WO2021223714A1 - 升降护栏和具有其的护理床 - Google Patents

升降护栏和具有其的护理床 Download PDF

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Publication number
WO2021223714A1
WO2021223714A1 PCT/CN2021/091933 CN2021091933W WO2021223714A1 WO 2021223714 A1 WO2021223714 A1 WO 2021223714A1 CN 2021091933 W CN2021091933 W CN 2021091933W WO 2021223714 A1 WO2021223714 A1 WO 2021223714A1
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WO
WIPO (PCT)
Prior art keywords
rod
lifting
link
guard
telescopic rod
Prior art date
Application number
PCT/CN2021/091933
Other languages
English (en)
French (fr)
Inventor
龙观富
陈宇
刘进
于万胜
Original Assignee
广东博方众济医疗科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202010375192.XA external-priority patent/CN111449869A/zh
Priority claimed from CN202010811624.7A external-priority patent/CN111839941A/zh
Priority claimed from CN202011446073.5A external-priority patent/CN112587336A/zh
Priority claimed from CN202023343157.4U external-priority patent/CN214679248U/zh
Application filed by 广东博方众济医疗科技有限公司 filed Critical 广东博方众济医疗科技有限公司
Publication of WO2021223714A1 publication Critical patent/WO2021223714A1/zh

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/05Parts, details or accessories of beds

Definitions

  • This application relates to the technical field of medical devices, and specifically to a lifting guardrail and a nursing bed having the same.
  • Nursing bed is mainly composed of bed body, guardrail, headboard, footboard and accessories.
  • the guardrail usually needs to have a lifting function to facilitate people to get on and off the bed.
  • the railings of the guardrail will still be exposed to the patient's vision, which will produce unfriendly psychological hints to the patient, which is not conducive to the recovery of the patient's disease and physical and mental health.
  • the lifting rod in the related art usually only has two upper and lower crossbars, and the distance between the two crossbars is too large, which easily reduces the protective effect.
  • the lifting guardrail on both sides is a necessary accessory.
  • the common lifting guardrail at home and abroad is roughly divided into four categories: round tube bending and splicing, two One-stage or three-stage vertical telescopic type, foldable, rotating and retractable medical bed.
  • the first and third types are more common, but the first type requires manual disassembly every time the patient gets in and out of the bed, which is very inconvenient.
  • the third type is more commonly used in hospitals, is relatively single, and does not comply with the load in the law and automatically drops slowly.
  • the second and fourth types are relatively novel lifting guardrails without pinching hands.
  • the second type is vertically retractable and has higher overall processing and installation accuracy, and it is more difficult to meet the slow decline after releasing the switch. Don't get caught up; the last one is currently a solution that is perfectly compatible with laws and regulations and all directions.
  • the most common method of rotating and retracting lifting guardrails is to increase friction by sticking PU or other plastics on both sides of the lower rotating rod, so as to achieve the effect of slowly lowering after releasing the switch without pinching hands.
  • the friction effect will become worse and worse, until the friction plate fails, and the overall cushioning effect is not good.
  • lifting guardrails of common nursing beds are standard lifting guardrails.
  • the lifting guardrail has a parallel lifting function, it cannot be guaranteed that the multiple main poles of the lifting guardrail are in parallel position during the lifting process of the lifting guardrail.
  • the lifting guardrail is inclined or twisted during the lifting process, and the safety is low.
  • This application aims to solve at least one of the technical problems existing in the prior art. For this reason, this application proposes a lifting guardrail.
  • the lifting guardrail of the first aspect can improve the problem that the railing and the lifting driving mechanism of the existing lifting guardrail are still exposed when they are retracted.
  • the second aspect of the lifting guardrail has simple structure, convenient operation and good protection effect.
  • the third aspect of the lifting guardrail is equipped with a buffer mechanism, which can convert the variable speed rotation of the second link into a variable speed linear motion at the end of the motion, and the buffer effect is relatively good.
  • the lifting guardrail keeps parallel during the lifting process, has good stability and high safety.
  • This application also aims to propose a nursing bed using the above-mentioned lifting guardrail.
  • the lifting guardrail includes: an upper guard bar; a lower guard bar; and a middle telescopic bar, the middle telescopic bar is arranged between the upper guard bar and the lower guard bar in a liftable manner.
  • the lifting guardrail of the first aspect of the present application can improve the problem that the railing and the lifting driving mechanism of the existing lifting guardrail are still exposed when contracted, and its additional technical features are as follows:
  • the lifting guardrail further includes: a first upper link, a second upper link, a first lower link, and a second lower link.
  • the middle telescopic rod is located between the upper guard rod and the lower guard rod, and the middle telescopic rod includes a first telescopic section and a second telescopic section that are relatively slidable.
  • the upper end of the first upper link is hinged to the upper guard bar, and the lower end of the first upper link is hinged to the first telescopic section.
  • the upper end of the second upper link is hinged to the upper guard bar, and the lower end of the second upper link is hinged to the second telescopic section.
  • the upper end of the first lower link is hinged to the first telescopic section, and the lower end of the first lower link is hinged to the lower guard rod.
  • the upper end of the second lower link is hinged to the second telescopic section, and the lower end of the second lower link is hinged to the lower guard rod.
  • the two ends of the first upper link are respectively hinged to the upper guard bar and the first telescopic section.
  • Both ends of the second upper connecting rod are respectively hinged to the upper guard rod and the second telescopic section.
  • Both ends of the first lower connecting rod are hinged to the first telescopic section and the lower guard rod respectively.
  • the two ends of the second lower link are respectively hinged to the second telescopic section and the lower guard bar.
  • the first upper link and the second upper link can drive the upper guardrail.
  • the rod moves in a direction away from the lower guard rod while the first lower link and the second lower link can drive the middle telescopic rod to move away from the lower guard rod, that is, the upper guard rod and the middle telescopic rod can achieve linkage.
  • the middle telescopic rod is vertically located between the upper guardrail and the lower guardrail. When the lifting guardrail is opened, the middle telescopic rod can be used as the middle railing of the lifting guardrail, avoiding the excessive distance between the upper guardrail and the lower guardrail. Play a protective role.
  • the lower end of the first upper link and the upper end of the first lower link are drivingly connected by a first synchronization structure.
  • the first synchronization structure is arranged so that the movement of one of the first upper link and the first lower link can drive the other to move, thereby realizing the up and down synchronous movement of the lifting guardrail, so that the lifting guardrail can be folded or retracted.
  • the movement of the upper guard rod and the middle telescopic rod can be consistent.
  • the first synchronization structure includes a first gear and a second gear; the first gear is fixed to the lower end of the first upper link, and the second gear is fixed to the first lower link. At the upper end, the first gear meshes with the second gear.
  • the first synchronization structure includes a first gear and a second gear respectively connected to the first upper link and the first lower link, that is, the first upper link and the first lower link are synchronously connected by gears.
  • the lower end of the second upper link and the upper end of the second lower link are drivingly connected by a second synchronization structure.
  • the second synchronization structure is arranged so that the movement of one of the second upper link and the second lower link can drive the other to move, thereby realizing the up and down synchronous movement of the lifting guardrail, so that the lifting guardrail can be stowed or When opened, the movement of the upper guard rod and the middle telescopic rod can be consistent.
  • the second synchronization structure includes a third gear and a fourth gear; the third gear is fixed to the lower end of the second upper link, and the fourth gear is fixed to the second lower link. At the upper end, the third gear meshes with the fourth gear.
  • the second synchronization structure includes a third gear and a fourth gear respectively connected to the second upper link and the second lower link, that is, the second upper link and the second lower link are synchronously connected by gears.
  • the lower end of the first lower link and the lower end of the second lower link are drivingly connected by a third synchronization structure.
  • the lifting guardrail since the lifting guardrail has a certain length, the first lower link and the second lower link are arranged at intervals in the length direction of the lifting guardrail, so the lower end of the first lower link and the lower end of the second lower link Relative to the rotation of the lower guardrail, there is a delay and asynchrony.
  • the arrangement of the third synchronization structure can make the lower end of the first lower link and the lower end of the second lower link move synchronously, facilitating the retracting or opening of the lifting guardrail.
  • the third synchronization structure includes a first synchronization wheel, a second synchronization wheel and a flexible transmission member; the first synchronization wheel is fixed at the lower end of the first lower link, and the second synchronization wheel is fixed At the lower end of the second lower link, the flexible transmission member is wound on the first synchronous wheel and the second synchronous wheel in a "8"-shaped winding method.
  • the third synchronization structure is a flexible transmission structure, which is suitable for the synchronization transmission of components between larger distances.
  • the flexible transmission part is wound around the first and second synchronization wheels in a "8"-shaped winding method. Up, the rotation direction of the first synchronization wheel and the second synchronization wheel are opposite, so that the first lower link and the second lower link can synchronously drive the middle telescopic rod to rise or fall.
  • the lifting guardrail has an open state and a stowed state.
  • the open state the distance between the upper guard bar and the lower guard bar is larger than that in the stowed state. Describe the spacing between the guard rails; when the lifting guardrail is in an open state, the middle telescopic rod is in an extended state; when the lifting guardrail is in a retracted state, the middle telescopic rod is in a shortened state.
  • the middle telescopic rod when the lifting guardrail is in an open state, the middle telescopic rod is extended, so that the middle telescopic rod can function as a middle railing, and it has a better protective effect.
  • the middle telescopic rod When the lifting guardrail is in the stowed state, the middle telescopic rod is in a shortened state, so that the middle telescopic rod can also be stowed, so that the volume of the entire lifting guardrail in the stowed state can be reduced.
  • the intermediate telescopic rod further includes a lock assembly and an unlocking assembly.
  • the lock assembly is used to lock the intermediate telescopic rod in an extended state
  • the unlocking assembly is used to release the locking assembly from the intermediate telescopic rod. locking.
  • the lock assembly can lock the intermediate telescopic rod in the extended state, so that the lifting guardrail can be stably maintained in the open state, and the lifting guardrail is prevented from automatically switching to the stowed state under the action of the gravity of the upper guard rod.
  • the unlocking component can release the locking of the middle telescopic rod by the locking component, which is convenient for the lifting guardrail to be stowed.
  • the first telescopic section is provided with a lock hole
  • the lock assembly is provided on the second telescopic section
  • the lock assembly includes a lock pin for inserting into the lock hole
  • the unlocking assembly includes a push block And button, the push block is used to push the lock pin to move so that the lock pin exits the lock hole, the button is arranged at one end of the middle telescopic rod, and the button is used to trigger the push block action.
  • the structure of the lock assembly and the unlock assembly is simple, and the setting of the button is convenient for the user to drive the lock assembly to unlock the middle telescopic rod.
  • a first accommodating groove is provided on the upper guardrail, and a second accommodating groove is provided on the lower guardrail; when the lifting guardrail is in the retracted state, the upper guardrail and the lower guardrail The rods are close together, the middle telescopic rod is accommodated in the first accommodating groove and the second accommodating groove, the first upper connecting rod and the second upper connecting rod are both accommodated in the first accommodating groove, the first lower connecting rod and the second lower connecting rod It is accommodated in the second accommodating groove.
  • the middle telescopic rod is accommodated in the first accommodating groove and the second accommodating groove
  • the first upper link and the second upper link are both accommodated in the first accommodating groove
  • the first The lower connecting rod and the second lower connecting rod are housed in the second accommodating groove, which can reduce the space occupied by the lifting guardrail when stowed, and can also avoid the intermediate telescopic rod, the first upper connecting rod, the second upper connecting rod, and the second upper connecting rod.
  • the exposure of the upper link and the second lower link within the visible range of the user causes a bad user experience.
  • the lifting guardrail in the second aspect of the application has a simple structure, convenient operation and good protection effect, and its additional technical features are as follows:
  • the lifting guardrail further includes: an upper lifting assembly, and the upper lifting assembly is arranged between the upper guard rod and the intermediate telescopic rod, so that the The upper guard rod and the middle telescopic rod are close to or far away from each other; the lower lifting assembly, the lower lifting assembly is arranged between the lower guard rod and the middle telescopic rod, so that the lower guard rod and the middle telescopic rod The telescopic rods are close to or far away from each other; a synchronization component, the synchronization component is arranged between the upper lifting component and the lower lifting component, so that the upper lifting component and the lower lifting component perform synchronous lifting actions.
  • an upper lifting assembly is provided between the upper guard bar and the middle telescopic rod
  • a lower lifting assembly is provided between the lower guard bar and the middle telescopic rod.
  • the upper lifting assembly includes an upper lifting rod, and both ends of the upper lifting rod are respectively rotatably connected to the upper guard rod and the middle telescopic rod;
  • the lifting assembly includes a lower lifting rod, and both ends of the lower lifting rod are respectively rotatably connected with the lower guard rod and the middle telescopic rod;
  • the synchronization assembly includes a first matching gear and a second matching gear that mesh with each other, so The first matching gear is provided at an end of the upper lifting rod close to the middle telescopic rod, and the second matching gear is provided at an end of the lower lifting rod close to the middle telescopic rod.
  • the intermediate telescopic rod includes a relatively slidable second telescopic section and a first telescopic section
  • the upper lifting rod includes a second upper connecting rod and a first upper connecting rod.
  • the lower lifting rod includes a second lower link and a first lower link
  • the second upper link and the second lower link are correspondingly fitted on the second telescopic section
  • the first upper link The connecting rod and the first lower connecting rod are correspondingly fitted on the first telescopic section
  • the synchronization assembly is provided with two, and one synchronization assembly is respectively provided on the second upper connecting rod and the second lower connecting rod. Between the rods, another synchronization assembly is provided between the first upper link and the first lower link.
  • the lifting guardrail further includes a drive assembly provided on the intermediate telescopic rod, and the drive assembly is adapted to drive the second telescopic section and the first telescopic section.
  • a telescopic section moves in directions away from each other or close to each other.
  • the upper guardrail and the intermediate telescopic rod both have an open position and a closed position in the lifting direction
  • the lifting guardrail further includes a locking assembly
  • the lock The stop component is adapted to lock the upper lifting component and/or the lower lifting component, so that the upper guard rod and the intermediate telescopic rod are maintained in the open position or the folded position.
  • the locking assembly includes a rigid hook provided on an end of the upper lifting assembly facing the upper guard rod, and an elastic hook provided on the upper guard rod
  • the opening directions of the rigid hook and the elastic hook are opposite, and during the movement of the upper guard bar from the folded position toward the open position, the rigid hook is suitable for making the The elastic hook undergoes elastic deformation, and after the elastic deformation occurs, the elastic hook engages with the rigid hook.
  • the locking assembly further includes an unlocking member, the unlocking member is provided on the upper guard bar, and the unlocking member is adapted to make the elastic hook elastic Deformed so as to disengage the elastic hook and the rigid hook.
  • the lifting guardrail further includes: a buffer member, the buffer being provided between the upper lifting component and the upper guard rod, and/or the upper lifting component and the middle telescopic Between the rods, and/or between the lower lifting assembly and the lower guard rod, and/or between the lower lifting assembly and the middle telescopic rod, the buffer member is suitable for slowing down the lifting speed of the upper guard rod and the middle telescopic rod.
  • the buffer member is at least one of an anti-collision sleeve, a damper, and a torsion spring.
  • the lifting guardrail of the third aspect of the present application is provided with a buffer mechanism, which can convert the variable speed rotation of the second link into a variable speed linear motion at the end of the motion.
  • the buffer effect is relatively good.
  • the lifting guardrail further includes: a link mechanism, and both ends of the intermediate telescopic rod are provided with the link mechanism, and the link mechanism includes a first link mechanism. Rod and a second connecting rod, one end of the first connecting rod is rotatably connected to the middle telescopic rod and the other end is rotatably connected to the upper guard rod, one end of the second connecting rod is rotatably connected to the middle telescopic rod and the other One end is rotatably connected to the lower guard rod; a buffer mechanism, the buffer mechanism is provided between the second link and the lower guard rod, the buffer mechanism includes a linkage member and a variable resistance member, and the linkage member has Connect the movement end of the variable resistance member, one end of the linkage member is connected to the second link to convert the variable speed rotation of the second link into the variable speed linear movement of the movement end, the variable resistance The member is arranged on the lower guard bar, and the variable resistance member is configured to receive the greater the speed, the greater
  • variable-speed rotation of the second link can be converted into the variable-speed linear motion at the end of the movement by setting the buffer mechanism, and the higher the speed, the greater the resistance of the variable resistance member, the lifting guardrail can be maintained
  • the slower descent effect and excellent cushioning effect can effectively avoid pinching fingers. And because friction cushioning is not used, there will be no friction loss of parts, and the overall service life is relatively long.
  • variable resistance member is a damper
  • the linkage member is a connecting rod, one end of the connecting rod is rotatably connected to the second connecting rod, and the connecting rod The other end is configured as the moving end, and the moving end is rotatably connected to the damper.
  • the lifting guardrail further includes: a rolling body, the rolling body is provided on the moving end of the connecting rod; a support, the support is provided on the On the lower guard bar, the rolling body abuts on the support member.
  • the damper is partially abutted on the support, and a fixing seat is provided on the lower guard rod, and the fixing seat is connected to the damper.
  • the upper guard bar has a first accommodating space, the first connecting rod is provided in the first accommodating space; the lower guard bar has a second accommodating space , The second connecting rod is arranged in the second accommodating space.
  • the buffer mechanism is provided in the second accommodating space, and the buffer mechanism is provided at an end of the second connecting rod away from the lower guard rod On the side.
  • the second accommodating space is configured such that when the upper guard rod is lowered to fit the lower guard rod, the intermediate telescopic rod and the linkage mechanism It can be stored in the second accommodating space.
  • the upper guard bar and the lower guard bar have the same structure, and the lower guard bar includes a first connecting plate and a second connecting plate connecting the first connecting plate A board, the second accommodating space is defined between the second connecting board and the first connecting board.
  • the lower guard rod further includes a sheath, and both ends of the lower guard rod in the length direction are provided with the sheath, and the end of the first connecting plate And the end of the second connecting plate is arranged in the sheath.
  • the lifting guardrail in the fourth aspect of the present application keeps parallel during the lifting process, has good stability and high safety, and its technical characteristics are as follows:
  • the lifting guardrail includes: at least two main rods and at least three connecting rods;
  • the middle telescopic rod is a telescopic rod and includes at least two telescopic sections, the at least two telescopic sections include a first telescopic section and a second telescopic section;
  • the connecting rod includes: a first A lower link, a second lower link and a third link, one end of the first lower link is rotatably connected to the lower guard rod, and the other end of the first lower link is rotatably connected to the telescopic Section, one end of the second lower link is rotatably connected to the lower guard bar, the other end of the second lower link is rotatably connected to the telescopic section, and one end of the third link is rotated It is connected to the lower guard rod, and the other end of the third link is rotatably connected to the telescopic section.
  • the lifting guardrail of the embodiment of the present application by arranging a lower guard rod and a middle telescopic rod, and providing at least three pivotally connected connecting rods between the lower guard rod and the middle telescopic rod, the difference between the lower guard rod and the middle telescopic rod is realized.
  • the height of the room can be easily adjusted to suit the patient.
  • the third connecting rod and the first lower connecting rod are both pivotally connected to the first telescopic section, and the other end of the third connecting rod and the first lower connecting rod are also pivotally connected to A parallelogram structure is formed on the lower guard bar, which can ensure that when the lower guard bar is raised and lowered relative to the lower guard bar, it can always be parallel to the lower guard bar, thereby preventing the middle telescopic bar from twisting or deflection during the lifting process. Move, improve the safety performance of the lifting guardrail.
  • the lifting guardrail according to the fourth aspect of the present application may also have the following additional technical features:
  • the main rod further includes an upper guard rod, and the upper guard rod and the lower guard rod are located on both sides of the middle telescopic rod;
  • the connecting rod includes : A first upper link and a second upper link, one end of the first upper link is rotatably connected to the upper guard rod, and the other end of the first upper link is rotatably connected to the telescopic section One end of the second upper link is rotatably connected to the upper guard rod, the other end of the second upper link is rotatably connected to the telescopic section, and the second upper link is connected to the first
  • the telescopic sections connected by an upper link are different.
  • the first upper link is connected to the first telescopic section, and the shaft of the first lower link and the shaft of the first upper link are A first engagement assembly is connected between; the second upper link is connected to the second telescopic section, and a second lower link is connected between the shaft of the second lower link and the shaft of the second upper link. Engagement components.
  • At least one of the lower guard rod and the upper guard rod is provided in a receiving groove that opens toward the middle telescopic rod, and the middle telescopic rod is shortened to the second When a length is set, at least part of the intermediate telescopic rod is located in the containing groove.
  • the lower guard rod and the upper guard rod are both provided with the receiving groove, and when the intermediate telescopic rod is shortened to the first set length, A part of the intermediate telescopic rod is located in one of the accommodating grooves, and another part of the intermediate telescopic rod is located in the other of the accommodating grooves.
  • a torsion spring is provided at the rotating shaft of at least one of the connecting rods.
  • the telescopic sections of the intermediate telescopic rod are all pipe sections, and a plurality of the pipe sections are sequentially sleeved along the length direction of the intermediate telescopic rod, and are located at all of the inner layer.
  • a guide block is connected to the pipe section, and the guide block is used to slide in the pipe section located on the outer layer.
  • the lifting guardrail is provided with at least one locking structure, and the locking structure includes a locking portion and an unlocking portion, and the locking portion is used to When the intermediate telescopic rod is extended to a second set length, it is locked, the unlocking portion is used to unlock the locking portion when triggered, and the locking portion satisfies at least one of the following conditions: the lock The fixing part is used for locking between the main rod and the connecting rod; the locking part is used for locking between the two adjacent telescopic rods of the middle telescopic rod.
  • the locking portion is used for locking between the main rod and the connecting rod, and the locking portion includes: a first hook, and A hook is connected to the main rod through a rotating shaft; a second hook, the second hook is integrally formed on the connecting rod, and the second hook is located in the direction of the rotating shaft of the connecting rod.
  • the middle telescopic rod is shortened to a first set length
  • the second hook is separated from the first hook, and the middle telescopic rod is extended to a second setting
  • the second hook is matched with the first hook
  • the retaining elastic member is connected between the main rod and the first hook, and the retaining elastic member is used for
  • the intermediate telescopic rod is at the second set length, the first hook is driven to be clamped on the second hook.
  • each The unlocking parts of the locking structure are all pull tabs connected to the first hook, and both ends of the main rod are respectively provided with end grooves for accommodating the pull tabs.
  • the nursing bed according to the embodiment of the present application includes the lifting guardrail according to any one of the foregoing.
  • the upper guardrail and the middle telescopic rod of the lifting guardrail of the nursing bed can realize linkage to realize the retracting or opening of the lifting guardrail.
  • the middle telescopic rod is vertically located between the upper guardrail and the lower guardrail. When the lifting guardrail is opened, the middle telescopic rod can be used as the middle railing of the lifting guardrail, avoiding the excessive distance between the upper guardrail and the lower guardrail. Play a protective role.
  • the nursing bed includes the lifting guardrail of the aforementioned second aspect embodiment
  • the overall structure of the nursing bed is simple, the operation is convenient, and the distance between the upper guardrail and the lower guardrail can be prevented from being too large And the resulting cannot be protected.
  • the lifting guardrail can be lifted up and down, wherein the buffer mechanism of the lifting guardrail can convert the variable speed rotation of the second link into the variable speed linear motion at the end of the motion, through variable resistance
  • the lifting guardrail maintains a slower descending effect.
  • the cushioning effect of the nursing bed is better, which can effectively prevent the fingers from being pinched. And because the friction cushioning method is not used, There is no friction loss of parts, and the overall service life is relatively long.
  • a third link and a first lower link are provided between the lower guardrail and the middle telescopic rod of the lifting guardrail, and both are pivotally connected to the first telescopic section,
  • the other ends of the third connecting rod and the first lower connecting rod are also pivotally connected to the lower guard rod, thus forming a parallelogram structure, which can ensure that the upper guard rod is always in contact with the lower guard rod when it is raised and lowered relative to the lower guard rod.
  • the guard bars are parallel, so as to prevent the middle telescopic bar from twisting or shifting during the lifting process, and improve the safety performance of the nursing bed during use.
  • Fig. 1 is a schematic structural diagram of a lifting guardrail provided by an embodiment of the first aspect of the application.
  • Fig. 2 is a schematic diagram of the open state of the lifting guardrail provided by the embodiment of the first aspect of the application.
  • FIG. 3 is a schematic diagram of the retracted state of the lifting guardrail provided by the embodiment of the first aspect of the application.
  • Fig. 4 is a schematic structural diagram of another lifting guardrail in the embodiment of the first aspect of the application.
  • FIG. 5 is a schematic diagram of a partial enlarged structure at V in FIG. 2.
  • Figure 6 is a schematic diagram of the structure of the lock assembly and the unlock assembly.
  • Fig. 7 is a perspective view of the lifting guardrail in the open position of the embodiment of the second aspect of the application.
  • Fig. 8 is a front view of the lifting guardrail in the open position of the embodiment of the second aspect of the application.
  • Fig. 9 is a cross-sectional view of the lifting guardrail in the open position of the embodiment of the second aspect of the application.
  • FIG. 10 is a schematic diagram of a partial enlarged structure of area A in FIG. 9.
  • Fig. 11 is a perspective view of the lifting guardrail in the folded position of the embodiment of the second aspect of the application.
  • Fig. 12 is a front view of the lifting guardrail in the folded position of the embodiment of the second aspect of the application.
  • Fig. 13 is a cross-sectional view of the lifting guardrail in the folded position of the embodiment of the second aspect of the application.
  • FIG. 14 is a schematic structural diagram of an embodiment of the lifting guardrail in the third aspect of the application.
  • 15 is a schematic diagram of the three-dimensional structure of the lifting guardrail according to the embodiment of the third aspect of the application.
  • FIG. 16 is a schematic structural diagram of the lifting guardrail of the embodiment of the third aspect of the application when it is lowered and retracted.
  • FIG. 17 is a schematic diagram of the three-dimensional structure of the lifting guardrail of the embodiment of the fourth aspect of the application when it does not have an upper guard bar when it is opened
  • FIG. 18 is a schematic diagram of the three-dimensional structure of the embodiment of the fourth aspect of the application when the lifting guardrail is opened.
  • FIG. 19 is a schematic diagram of the three-dimensional structure of the lifting guardrail when the embodiment of the fourth aspect of the application is lowered.
  • 20 is a front view of the lifting guardrail of the embodiment of the fourth aspect of the application when it is raised.
  • Fig. 21 is a front view from another angle when the lifting guardrail of the embodiment of the fourth aspect of the application is raised.
  • Figure 22 is a top view of an embodiment of the lifting guardrail in the fourth aspect of the application.
  • Fig. 23 is a cross-sectional view taken along line A-A in Fig. 22;
  • Fig. 24 is an enlarged view of B in Fig. 23.
  • Fig. 25 is an enlarged view of C in Fig. 23.
  • Figure 26 is an enlarged view of D in Figure 23.
  • Fig. 27 is a cross-sectional view of the embodiment of the fourth aspect of the application when the lifting guardrail is lowered.
  • Fig. 28 is a side view of the lifting guardrail according to the embodiment of the fourth aspect of the application.
  • Synchronization assembly 3b first matching gear 31b, second matching gear 32b,
  • Locking assembly 4b rigid hook 41b, elastic hook 42b, unlocking piece 43b,
  • Buffer 5b anti-collision sleeve 51b, second slider 62b,
  • Link mechanism 40c first link 410, second link 420, buffer mechanism 50c,
  • Linkage 510 variable resistance member 520, connecting block 5201, rolling element 60c, support member 70c,
  • the locking structure 5d, the locking portion 51d, the first hook 511, the second hook 512, the retaining elastic member 513, and the unlocking portion 52d is a first hook 511, the second hook 512, the retaining elastic member 513, and the unlocking portion 52d.
  • the present application provides a lifting guardrail 100, including: an upper guard bar 10, a lower guard bar 20, and a middle telescopic rod 30, wherein the middle telescopic rod 30 is set up on the upper guard bar 10 so as to be liftable. And the lower guard bar 20.
  • the lifting guardrail 100 of the present application can realize a height change and has a lifting function.
  • an embodiment of the first aspect of the present application provides a lifting guardrail 100.
  • the lifting guardrail 100 includes an upper guardrail 10, a lower guardrail 20, a middle telescopic rod 30, a first upper link 24, and a second upper link.
  • the rod 25 the first lower link 21 and the second lower link 22.
  • the middle telescopic rod 30 is located between the upper guard rod 10 and the lower guard rod 20, and the middle telescopic rod 30 includes a first telescopic section 31 and a second telescopic section 32 that are relatively slidable.
  • the upper end of the first upper link 24 is hinged to the upper guard bar 10, and the lower end of the first upper link 24 is hinged to the first telescopic section 31.
  • the upper end of the second upper link 25 is hinged to the upper guard bar 10, and the lower end of the second upper link 25 is hinged to the second telescopic section 32.
  • the upper end of the first lower link 21 is hinged to the first telescopic section 31, and the lower end of the first lower link 21 is hinged to the lower guard rod 20.
  • the upper end of the second lower link 22 is hinged to the second telescopic section 32, and the lower end of the second lower link 22 is hinged to the lower guard rod 20.
  • the lifting guardrail 100 has an open state and a stowed state. As shown in FIG. 2, in the open state, the distance between the upper guard bar 10 and the lower guard bar 20 is larger than the upper guard bar 10 and the lower guard bar 20 in the stowed state. The spacing between.
  • the middle telescopic rod 30 is in an extended state; as shown in FIG. 3, when the lifting guardrail 100 is in a stowed state, the middle telescopic rod 30 is in a shortened state.
  • the middle telescopic rod 30 is extended, so that the middle telescopic rod 30 can function as a middle railing, and better protect.
  • the middle telescopic rod 30 When the lifting guardrail 100 is in the stowed state, the middle telescopic rod 30 is in a shortened state, so that the middle telescopic rod 30 can also be stowed, which can reduce the volume of the entire lifting guardrail 100 in the stowed state.
  • the upper guardrail 10 When the lifting guardrail 100 is stowed or opened, the upper guardrail 10 is always in a horizontal state.
  • the upper guard bar 10 is provided with a first accommodating groove 11a
  • the slot of the first accommodating groove 11a faces the lower guard bar 20
  • the lower guard bar 20 is provided with a second accommodating groove 21a.
  • the notch of 21a faces the upper guard bar 10.
  • the upper end of the first upper link 24 and the upper end of the second upper link 25 are both hinged in the first receiving groove 11a
  • the lower end of the first lower link 21 and the lower end of the second lower link 22 are both hinged to the second receiving ⁇ 21a.
  • the middle telescopic rod 30 is accommodated in the first accommodating groove 11a and the second accommodating groove 21a, and the first upper link 24 and the second upper link
  • the connecting rods 25 are all accommodated in the first accommodating groove 11a, and the first lower connecting rod 21 and the second lower connecting rod 22 are accommodated in the second accommodating groove 21a, which can reduce the space occupied by the lifting guardrail 100 when it is stowed, and can also It is avoided that the middle telescopic rod 30, the first upper link 24, the second upper link 25, the second upper link 25, and the second lower link 22 are exposed in the visible range of the user, resulting in a bad user experience.
  • the upper end of the first upper link 24 and the hinge position of the upper guard rod 10 are between the upper end of the second upper link 25 and the hinge position of the upper guard rod 10
  • the distance is greater than the distance between the lower end of the first upper link 24 and the hinged position of the first telescopic section 31 and the distance between the lower end of the second upper link 25 and the hinged position of the second telescopic section 32, the first upper link 24 and
  • the second upper link 25 is arranged in an inverted figure; the distance between the upper end of the first lower link 21 and the hinge position of the first telescopic section 31 and the distance between the upper end of the second lower link 22 and the hinge position of the second telescopic section 32 Less than the distance between the hinged position of the lower end of the first lower link 21 and the lower guard bar 20 and the hinged position of the lower end of the second lower link 22 and the lower guard bar 20, the first lower link 21 and the second lower link
  • the rod 22 is arranged in a figure eight.
  • the first upper link 24 and the upper guard bar 10 are hinged, the first upper link 24 and the first telescopic section 31
  • the hinge joint of the first lower link 21 and the lower guard rod 20, the hinge joint of the second lower link 22 and the second telescopic section 32, and the hinge joint of the second lower link 22 and the lower guard rod 20 can all be twisted.
  • Springs, gas springs, damping rods and other components with buffering function can be hinged.
  • a torsion spring is used at the hinge.
  • the first upper link 24 and the second upper link 25 may be arranged in a figure eight, and the first lower link 21 and the second lower link 22 may be arranged in an inverted figure.
  • the middle telescopic rod 30 is in an extended state, and when the lifting guardrail 100 is in an open state, the middle telescopic rod 30 is in a shortened state.
  • first upper link 24 and the second upper link 25 may be arranged in a cross
  • first lower link 21 and the second lower link 22 may also be arranged in a cross
  • the first upper link 24 and the second upper link 25 rotate relative to the upper guard rod 10 under the action of the gravity of the upper guard rod 10, so that the first telescopic rod 30 is extended and retracted.
  • the section 31 and the second telescopic section 32 move relative to each other (making the middle telescopic rod 30 shorten), and the relative movement of the first telescopic section 31 and the second telescopic section 32 can drive the first lower link 21 and the second lower link 22 to lower the protection relative to each other.
  • the rod 20 rotates, the first upper link 24, the second upper link 25, the first lower link 21 and the second lower link 22 move, which can drive the upper guard rod 10 and the middle telescopic rod 30 to approach the lower guard rod 20
  • the first upper link 24 and the second upper link 25 can drive the upper guard rod 10 to move away from the lower guard rod 20, and the first lower link 21
  • the second lower connecting rod 22 can drive the middle telescopic rod 30 to move away from the lower guard rod 20, that is, the upper guard rod 10 and the middle telescopic rod 30 can achieve linkage.
  • the middle telescopic pole 30 is vertically located between the upper guardrail 10 and the lower guardrail 20. When the lifting guardrail 100 is opened, the middle telescopic pole 30 can be used as the middle railing of the lifting guardrail 100 to avoid the upper guardrail 10 and the lower guardrail. The distance between 20 is too large to play a protective role.
  • the first telescopic section 31 is a sleeve rod
  • the second telescopic section 32 is a sliding rod
  • the sliding rod is a hollow structure.
  • the lower end of the second upper link 25 and the upper end of the second lower link 22 are both hinged to One end of the second telescopic section 32, the other end of the second telescopic section 32 is inserted into the first telescopic section 31, a slider is fixed in the first telescopic section 31 near the socket, and the slider is made of self-lubricating material, such as POM (polyformaldehyde, thermoplastic crystalline polymer), nylon, brass, etc., the second telescopic section 32 slides relative to the first telescopic section 31 and is always in contact with the slider, the slider is between the first telescopic section 31 and the second telescopic section 32 The sliding provides lubricant, reduces the friction between the first telescopic section 31 and the second telescopic section 32, and facilitates the opening or closing of the lifting
  • first synchronization structure enables the movement of one of the first upper link 24 and the first lower link 21 to drive the other movement, thereby realizing the up and down synchronous movement of the lifting guardrail 100, so that the lifting guardrail 100 can be stowed or opened At this time, the movement of the upper guard bar 10 and the middle telescopic bar 30 can be consistent.
  • the first synchronization structure includes a first gear 41a and a second gear 61a; the first gear 41a is fixed to the lower end of the first upper link 24, the first gear 41a is rotatably connected to the first telescopic section 31, and the second gear 61a is fixed to the upper end of the first lower link 21, the second gear 61a is rotatably connected to the first telescopic section 31, and the first gear 41a is externally meshed with the second gear 61a, that is, the first upper link 24 and the first lower link 21 is connected by gear synchronous transmission, which not only has a good synchronization effect, but also has a simple structure, which will not increase the structure of the lifting guardrail 100.
  • the first synchronization structure can also be in other structural forms.
  • the first synchronization structure includes a first pulley, a second pulley, and a transmission belt.
  • the first pulley is fixedly connected to the lower end of the first upper link 24.
  • the first pulley is rotatably connected to the first telescopic section 31
  • the second pulley is fixedly connected to the upper end of the first lower link 21
  • the second pulley is rotatably connected to the first telescopic section 31
  • the transmission belt is wound in accordance with the "8"
  • the method is arranged around the first pulley and the second pulley, so that the rotation directions of the first upper link 24 and the first lower link 21 relative to the first telescopic section 31 are opposite.
  • the lower end of the second upper link 25 and the upper end of the second lower link 22 are drivingly connected by a second synchronization structure.
  • the arrangement of the first synchronization structure and the second synchronization structure enables the movement of one of the second upper link 25 and the second lower link 22 to drive the other movement, thereby realizing the up and down synchronous movement of the lifting guardrail 100, so that the lifting guardrail 100 When retracted or opened, the movement of the upper guard rod 10 and the middle telescopic rod 30 can be consistent.
  • the second synchronization structure includes a third gear 51a and a fourth gear 71a; the third gear 51a is fixed to the lower end of the second upper link 25, and the third gear 51a is rotatably connected to the second telescopic section 32.
  • the four gear 71a is fixed to the upper end of the second lower link 22, the fourth gear 71a is rotatably connected to the second telescopic section 32, and the third gear 51a is externally meshed with the fourth gear 71a, that is, the second upper link 25 and the second lower link 25
  • the connecting rod 22 is connected by a gear synchronous transmission, which not only has a good synchronization effect, but also has a simple structure, and does not additionally increase the structure of the lifting guardrail 100.
  • the second synchronization structure may also have other forms, and the second synchronization structure in other embodiments may refer to the first synchronization structure.
  • the first synchronization structure and the second synchronization structure may be the same or different.
  • the lifting guardrail 100 also has a certain length.
  • the first lower link 21 and the second lower link 22 are arranged at intervals in the length direction of the lifting guardrail 100, so the first lower link
  • the rotation of the lower end of the lower end 21 and the lower end of the second lower link 22 relative to the lower guard rod 20 may be delayed and out of synchronization.
  • the lower end of the first lower link 21 and the lower end of the second lower link 22 are drivingly connected by a third synchronization structure.
  • the arrangement of the third synchronization structure can make the lower end of the first lower link 21 and the lower end of the second lower link 22 move synchronously, facilitating the stowing or opening of the lifting guardrail 100, and avoiding the lower end of the first lower link 21 and the second
  • the lower end of the second lower link 22 is too far apart to rotate synchronously, and the risk of the first lower link 21 and the second lower link 22 being unable to rotate synchronously due to rotating friction and other reasons can also be reduced.
  • the third synchronizing structure includes a first synchronizing wheel 62a, a second synchronizing wheel 72a and a flexible transmission member 73a; the first synchronizing wheel 62a is fixed to the lower end of the first lower link 21, and the first synchronizing wheel 62a is rotatably connected On the lower guard bar 20, the second synchronous wheel 72a is fixed to the lower end of the second lower link 22, the second synchronous wheel 72a is rotatably connected to the lower guard bar 20, and the flexible transmission member 73a is wound around the first in an "8" shape.
  • a synchronizing wheel 62a and a second synchronizing wheel 72a is wound around the first in an "8" shape.
  • first lower link 21 and the second lower link 22 are arranged in a figure eight shape, the rotation directions of the first lower link 21 and the second lower link 22 relative to the lower guard rod 20 are opposite, and the flexible transmission member 73a is marked with "8". ""-Shaped winding method is wound on the first synchronization wheel 62a and the second synchronization wheel 72a, which can ensure that the rotation directions of the first synchronization wheel 62a and the second synchronization wheel 72a are opposite, so that the first lower link 21 and the second lower link The connecting rod 22 rotates synchronously in the opposite direction.
  • the flexible transmission member 73a may be, for example, a transmission belt, a transmission chain, a steel wire rope, etc. In this embodiment, the flexible transmission member 73a is a steel wire rope.
  • the middle telescopic bar 30 also includes a lock assembly and an unlock assembly.
  • the lock assembly is used to lock the intermediate telescopic rod 30 in the extended state
  • the unlock assembly is used to unlock the intermediate telescopic rod 30 by the lock assembly.
  • the lock assembly can lock the intermediate telescopic rod 30 in the extended state, so that the lifting guardrail 100 can be stably maintained in the open state, and avoiding the lifting guardrail 100 from automatically switching to the stowed state under the action of the gravity of the upper guard rod 10.
  • the unlocking component can release the locking of the middle telescopic rod 30 by the locking component, so that the lifting guardrail 100 is convenient to be stowed.
  • the first telescopic section 31 is provided with a lock hole 311a
  • the lock assembly is provided on the second telescopic section 32;
  • the lock assembly includes a lock pin 81a for inserting into the lock hole 311a, and
  • the unlock assembly includes a push block 83a and
  • the button 85a and the push block 83a are used to push the lock pin 81a to move so that the lock pin 81a exits the lock hole 311a, the button 85a is arranged at one end of the middle telescopic rod 30, and the button 85a is used to trigger the action of the push block 83a.
  • the lock assembly also includes a lock body 80a.
  • the lock body 80a is fixedly connected to the second telescopic section 32.
  • the lock pin 81a is connected to the lock shell through the first spring 82a.
  • the lock pin 81a can move relative to the lock shell.
  • the expansion and contraction direction of the telescopic rod 30 is vertical.
  • the unlocking assembly includes a push block 83a, a push rod 84a and a button 85a.
  • the push rod 84a passes through the hollow second telescopic section 32.
  • the button 85a is connected to one end of the push rod 84a.
  • the button 85a extends out of the second telescopic section 32 away from the second telescopic section 32.
  • One end of the telescopic section 31, the push block 83a is connected to the lock body 80a through the second spring 86a, the user-driven button 85a can push the push block 83a through the push rod 84a to overcome the elastic force of the second spring 86a, the push rod 84a and the push block
  • the moving direction of 83a is consistent with the telescopic direction of the intermediate telescopic rod 30.
  • the action of the push block 83a can drive the lock pin 81a to overcome the elastic force of the first spring 82a to exit the lock hole 311a to unlock the first telescopic section 31 and the second telescopic section 32 , So that the first telescopic section 31 and the second telescopic section 32 can move relatively.
  • the push block 83a has an inclined surface 831, and the lock pin 81a is provided with a roller shaft 811 that abuts against the inclined surface 831; the movement of the push block 83a can make the roller shaft 811 slide along the inclined surface 831, so that the lock pin 81a connects the first telescopic section 31 and The second telescopic section 32 is locked or unlocked.
  • the lock hole 311a is provided at the end of the first telescopic section 31 close to the socket.
  • the lock assembly locks the lifting guardrail 100 in the maximum open state (open to the limit). Location).
  • the lifting guardrail 100 is retracted to the minimum state (retracted to the limit position) since the gravity of the upper guardrail 10 can keep the lifting guardrail 100 in the minimum retracted state, the first telescopic section 31 may not need a lock assembly. It is locked with the second telescopic section 32.
  • another locking hole 311a can be provided at the end of the first telescopic section 31 away from the socket, and the locking pin 81a is inserted into the locking hole 311a At this time, the lock assembly can lock the first telescopic section 31 and the second telescopic section 32 to keep the lifting guardrail 100 in the stowed state.
  • a plurality of lock holes 311a are arranged at intervals along the length direction of the first telescopic section 31, and different lock holes 311a correspond to different telescopic lengths of the middle telescopic member, so that the degree of opening corresponding to the lifting guardrail 100 is different, the upper guard The rod 10 can be located at different height positions to adapt to different application scenarios.
  • the present application also provides a nursing bed, which includes the lifting guardrail 100 provided in the embodiment of the first aspect.
  • the upper guardrail 10 and the middle telescopic rod 30 of the lifting guardrail 100 of the nursing bed of the present application can realize linkage, so as to realize the stowing or opening of the lifting guardrail 100.
  • the middle telescopic pole 30 is vertically located between the upper guardrail 10 and the lower guardrail 20. When the lifting guardrail 100 is opened, the middle telescopic pole 30 can be used as the middle railing of the lifting guardrail 100 to avoid the upper guardrail 10 and the lower guardrail.
  • the distance between 20 is too large to play a protective role.
  • the lifting guardrail 100 has a simple structure, convenient operation and good protection effect.
  • the lifting guardrail 100 includes an upper guard bar 10, a lower guard bar 20, and a middle telescopic rod 30.
  • the middle telescopic rod 30 is located between the upper guard bar 10 and the lower guard bar 20.
  • the upper guard rod 10, the lower guard rod 20 and the middle telescopic rod 30 all extend in the left-right direction, and the upper guard rod 10, the lower guard rod 20 and the middle telescopic rod 30 are all parallel to each other.
  • the lower guard bar 20 is fixed on a medical bed, and both the upper guard bar 10 and the middle telescopic bar 30 can perform lifting movements relative to the lower guard bar 20 in the up-and-down direction.
  • the upper guard bar 10, the lower guard bar 20, and the middle telescopic bar 30 may also have other structural shapes.
  • the above is only an example for illustration. Therefore, the present application discusses the upper guard bar 10, the lower guard bar 20, and the The structural shape of the intermediate telescopic rod 30 is not limited.
  • the lifting guardrail 100 further includes an upper lifting assembly, a lower lifting assembly, and a synchronization assembly 3b.
  • the upper lifting assembly is provided between the upper guard bar 10 and the middle telescopic rod 30, so that the upper guard bar 10 and the middle telescopic rod 30 are close to or far away from each other
  • the lower lifting assembly is arranged between the lower guard rod 20 and the middle telescopic rod 30, so that the lower guard rod 20 and the middle telescopic rod 30 are close to or away from each other
  • the synchronization assembly 3b is arranged on the upper lifting assembly and the lower lifting assembly. Between the components, so that the upper lifting component and the lower lifting component perform synchronous lifting actions.
  • an upper lifting assembly is provided between the upper guard rod 10 and the middle telescopic rod 30, and a lower lifting assembly is provided between the lower guard rod 20 and the middle telescopic rod 30.
  • the upper lifting assembly drives the upper guard rod 10 to lift
  • the synchronization assembly 3b is provided between the upper and lower lifting components, so that the upper and lower lifting components can perform synchronous lifting actions, so that the upper guard rod 10 and the middle telescopic rod 30 can be synchronized. Lift.
  • the upper guard rod 10 and the middle telescopic rod 30 can also be synchronized.
  • the ground is raised and lowered.
  • the upper guard rod 10 and the middle telescopic rod 30 have an open position and a closed position during the lifting motion in the up and down direction. In the closed position, the upper guard rod 10 and the middle telescopic rod 30 can both be with the lower guard.
  • the rod 20 is attached to each other.
  • the attachment here may mean that at least one of the upper guard rod 10, the middle telescopic rod 30, and the lower guard rod 20 has a receiving groove, so that the upper guard rod 10, the middle telescopic rod 30, and the lower guard rod 20 It can be stacked and stored.
  • the lower guard rod 20 has a storage groove
  • the upper guard rod 10 and the middle telescopic rod 30 can be stored in the storage groove of the lower guard rod 20, so that the upper guard rod 10 and the middle telescopic rod 30 can be "invisible” "It can reduce the psychological suggestion of the patient in the hospital bed to a certain extent, and help the patient's physical recovery.
  • the lamination can also be stacked sequentially in the up and down direction, and it can also achieve the "invisibility" of the upper guard rod 10 and the middle telescopic rod 30 to a certain extent.
  • an upper lifting assembly is provided between the upper guard bar 10 and the middle telescopic rod 30, and a lower lifting assembly is provided between the lower guard bar 20 and the middle telescopic rod 30.
  • the synchronization assembly 3b provided between the upper lifting assembly and the lower lifting assembly can make the upper lifting assembly and the lower lifting assembly perform synchronous lifting actions, so that the upper guard bar 10 and the middle telescopic rod 30 can be raised and lowered synchronously, the structure is simple, and the operation is convenient, and it can also avoid the unprotection caused by the excessive distance between the upper guard rod 10 and the lower guard rod 20.
  • the upper lifting assembly includes an upper lifting rod 20b. 30 is connected, the lower lifting assembly includes a lower lifting rod 21b, both ends of the lower lifting rod 21b are rotatably connected with the lower guard rod 20 and the middle telescopic rod 30, the synchronization assembly 3b includes a first mating gear 31b and a second meshing gear With the matching gear 32b, the first matching gear 31b is provided at an end of the upper lifting rod 20b near the middle telescopic rod 30, and the second matching gear 32b is provided at the end of the lower lifting rod 21b near the middle telescopic rod 30.
  • the two ends of the upper lifting rod 20b can respectively rotate relative to the upper guard rod 10 and the middle telescopic rod 30, and the upper lifting rod 20b can drive the first The cooperating gear 31b rotates.
  • the first cooperating gear 31b rotates
  • the second cooperating gear 32b is driven to rotate, so that the lower lifting rod 21b can follow the second cooperating gear 32b to rotate, so that the middle telescopic rod 30 and the upper guard rod 10 are raised and lowered synchronously. action.
  • the rotation center of the first matching gear 31b coincides with the rotation center of the upper lifting rod 20b relative to the middle telescopic rod 30, and the rotation center of the second matching gear 32b and the lower lifting rod 21b are relative to the middle telescopic rod 30.
  • the rotation centers of rotation coincide. Due to the meshing of the first matching gear 31b and the second matching gear 32b, the rotation direction of the upper lifting rod 20b is opposite to the rotation direction of the lower lifting rod 21b.
  • a driven gear can also be provided between the first matching gear 31b and the second matching gear 32b according to production requirements or use requirements, so that the rotation direction of the upper lifting rod 20b is the same as the rotation of the lower lifting rod 21b. The direction is the same, there is no restriction here.
  • the middle telescopic rod 30 includes a relatively slidable second telescopic section 32 and a first telescopic section 31, and the upper lifting rod 20b includes a second upper
  • the two ends of the second upper link 25 are respectively rotatably connected with the left end of the upper guard rod 10 and the left end of the middle telescopic rod 30, and the second lower link 22 Both ends of the lower guard rod 20 are rotatably connected with the left end of the middle telescopic rod 30, respectively.
  • the second upper link 25 A first matching gear 31b is provided on the upper part, and a second matching gear 32b is provided on the first lower link 21.
  • the second upper link 25 is rotated so that the left end of the upper guard rod 10 performs a lifting action.
  • the second lower link 22 can also rotate synchronously, so that the left end of the middle telescopic rod 30 performs a lifting action.
  • the two ends of the first upper link 24 are respectively rotatably connected with the right end of the upper guard rod 10 and the right end of the middle telescopic rod 30, and the two ends of the first lower link 21 are respectively rotatably connected with the lower guard rod.
  • the right end of 20 and the right end of the middle telescopic rod 30 are rotatably connected.
  • a first matching gear 31b is provided on the first upper link 24.
  • a second matching gear 32b is provided on the lower link 21, whereby the first upper link 24 is rotated so that during the lifting motion of the right end of the upper guard rod 10, the first lower link 21 can also Synchronous rotation, so that the right end of the middle telescopic rod 30 performs a lifting action.
  • the user can perform lifting actions on both ends of the upper guard rod 10 and the middle telescopic rod 30 respectively according to usage requirements.
  • the second telescopic section 32 and the first telescopic section 31 may be respectively formed as hollow rods.
  • the examples in FIGS. 7-13 of the present application are square rods, but they are not considered as reference to the present application. limits.
  • the first telescopic section 31 is sleeved on the second telescopic section 32, so that the second telescopic section 32 can be folded in the first telescopic section 31.
  • a first slider is provided at the left end of the first telescopic section 31, the outer side wall of the second telescopic section 32 can be matched with the first slider, and a second slider 62b is provided at the right end of the second telescopic section 32 ,
  • the second sliding block 62b can be matched with the inner side wall of the first telescopic section 31, thus, through the first sliding block and the second sliding block 62b, the second telescopic section 32 and the first telescopic section 31 can be made better. Relatively sliding, so that the middle telescopic rod 30 can perform a telescopic action better.
  • the first sliding block and the second sliding block 62b can be made of self-lubricating materials such as POM, nylon, brass, etc., and the sliding effect is good.
  • the second telescopic section 32 and the first telescopic section 31 can also slide relative to each other through the cooperation of the sliding rail slider, which is not limited here.
  • the telescopic action of the middle telescopic rod 30 can make the second upper link 25 and the second lower link 22 at the left end of the middle telescopic rod 30 relatively rotate relatively, so that the first upper link at the right end of the middle telescopic rod 30 24 and the first lower link 21 rotate relatively well.
  • a first matching gear 31b may be formed at the end of the second upper link 25, and the second lower link 22 A second mating gear 32b is formed at the end of the.
  • a first mating gear 31b can be formed at the end of the first upper link 24, and a second mating gear 32b is formed at the end of the first lower link 21.
  • the side of the first mating gear 31b facing the second mating gear 32b has a part of meshing teeth
  • the side of the second mating gear 32b facing the first mating gear 31b has meshing mating therewith.
  • the teeth of course, the layout of the meshing teeth of the first matching gear 31b and the second matching gear 32b can be set according to actual requirements, and there is no limitation here.
  • the lifting guardrail 100 further includes a driving assembly (not shown in the figure).
  • the driving assembly is provided on the intermediate telescopic rod 30, and the driving assembly is adapted to drive the second telescopic section 32 and the first telescopic section 32.
  • the telescopic sections 31 move in directions away from each other or close to each other. Therefore, when the upper guard rod 10 and the middle telescopic rod 30 are required to move from the folded position to the open position, the drive assembly can drive the second telescopic section 32 and the first telescopic section 31 to move away from each other.
  • the middle telescopic section The extension of the telescopic rod 30 can drive the second upper link 25 and the second lower link 22 at the left end of the middle telescopic rod 30 to rotate relatively well, and the first upper link 24 and the first lower link 24 at the right end of the middle telescopic rod 30
  • the connecting rod 21 rotates relatively well, so that the upper guard rod 10 and the middle telescopic rod 30 can move to the open position.
  • the upper guard rod 10 and the middle telescopic rod 30 need to move from the open position to the closed position, only It is only necessary to make the intermediate telescopic rod 30 perform a shortening action through the drive assembly, which will not be repeated here.
  • the drive assembly by controlling the extension and contraction actions of the intermediate telescopic rod 30 by the drive assembly, it is also possible to better control the intermediate telescopic rod 30 to stop at any extended position, and then keep it in the changed position, thereby enabling the upper guard The rod 10 and the intermediate telescopic rod 30 stop at any height position, so as to meet the different height requirements of the lifting guardrail 100.
  • a positioning assembly can also be provided to position the extension length of the intermediate telescopic rod 30 in real time, which is not limited here.
  • the upper guard rail 10 and the middle telescopic rod 30 both have an open position and a closed position in the lifting direction.
  • the lifting guardrail 100 further includes a locking assembly 4b.
  • the locking assembly 4b is suitable for locking the upper lifting assembly and/or the lower lifting assembly, so that the upper guard rod 10 and the middle telescopic rod 30 are kept in the open position or the closed position. That is to say, the upper guard bar 10 and the middle telescopic rod 30 can also have an open position and a closed position, as shown in Figs.
  • the middle telescopic rod 30 is located on the rear side of the upper guard bar 10 and the lower guard bar 20, and in the up and down direction, is located at the upper guard bar 10 and the lower guard bar 20
  • the locking assembly 4b can lock the upper lifting assembly, the lower lifting assembly, and the upper lifting assembly and The lower lifting assembly makes the upper guard rod 10 and the middle telescopic rod 30 both remain in the open position.
  • the locking assembly 4b includes a rigid hook 41b provided at one end of the upper lifting assembly facing the upper guard bar 10, and an elastic hook 42b provided on the upper guard bar 10, the openings of the rigid hook 41b and the elastic hook 42b The direction is opposite, and when the upper guard bar 10 moves from the folded position to the open position, the rigid hook 41b is adapted to make the elastic hook 42b elastically deform, and the elastic hook 42b is elastically deformed and then cooperates with the rigid hook 41b .
  • a rigid hook 41b is formed on the upper end of the second upper link 25.
  • the rigid hook 41b can surround the second upper link. 2.
  • the rotation center of the upper link 25 rotates.
  • the rigid hook 41b can abut the lower end of the elastic hook 42b.
  • the rigid hook 41b continues to rotate to make the elastic hook 42b undergoes elastic deformation.
  • the rigid hook 41b can be disengaged from the elastic hook 42b.
  • the rigid hook 41b is opposite to the opening of the elastic hook 42b.
  • the rotation direction of the rigid hook 41b can be changed, that is, reverse rotation, so that the rigid hook 41b and the elastic hook 42b can be clamped, so that the upper guard bar 10 and the middle telescope
  • the lever 30 remains in the open position.
  • a rigid hook 41b is also formed at the upper end of the first upper link 24, and an elastic hook 42b is formed at the relative position of the upper guard bar 10, and the action process is the same as the rigid hook at the upper end of the second upper link 25.
  • the coordination process of 41b is completely the same, so I won't repeat it here.
  • the locking assembly 4b further includes an unlocking member 43b, the unlocking member 43b is provided on the upper guard bar 10, the unlocking member 43b is adapted to make the elastic hook 42b elastically deform, so that the elastic hook 42b and the rigid hook 41b are separated Cooperate. Therefore, when the upper guard rod 10 and the middle telescopic rod 30 need to be moved from the open position to the closed position, the elastic hook 42b can be driven by the unlocking member 43b, so that the elastic hook 42b and the rigid hook 41b are out of cooperation. At this time, the upper guard rod 10 and the middle telescopic rod 30 can be lowered by their own gravity, or can be driven by a driving assembly, which is not limited here.
  • a buffer 5b can be provided between the upper lifting assembly and the upper guard rod 10.
  • the upper lifting assembly and the middle telescopic rod 30 can also be provided. At least one of the space between the lower lifting assembly and the lower guard rod 20, and between the lower lifting assembly and the middle telescopic rod 30 can be specifically set according to actual needs, which is not limited here. In the example shown in FIGS.
  • the buffer member 5b can slow down the rotation speed of the second upper link 25, the first upper link 24, the second lower link 22 and the first lower link 21, Therefore, the lifting speed of the upper guard rod 10 and the middle telescopic rod 30 is slowed down, and the reliability is high and the safety is good.
  • the buffer member 5b may be an anti-collision sleeve 51b.
  • an anti-collision sleeve 51b is provided on the lower guard rod 20.
  • the second lower link 22 is The lower end of the lower connecting rod 22 can abut against the anti-collision sleeve 51b, and then the anti-collision sleeve 51b can slow down the rotation speed of the second lower connecting rod 22.
  • the anti-collision sleeve 51b can also contact the second lower connecting rod 22. The angle of rotation is limited.
  • the lower guard rod 20 is also provided with another anti-collision sleeve 51b that cooperates with the first lower link 21.
  • the anti-collision sleeve 51b slows down the first lower link.
  • the rotation speed of the link 21 may also limit the rotation angle of the second lower link 22.
  • the buffer member 5b may also be a damper, a torsion spring, etc., wherein the damper or torsion spring may be arranged on the rotation axis of the second lower link 22 and the lower guard rod 20, or may be arranged on the rotation axis of the second lower link 22 and the lower guard rod 20
  • the rotation axis of the fourth crossbar and the lower guard bar 20 can also be arranged on the rotation axis of the second upper link 25 and the upper guard bar 10.
  • damping can be provided on all the rotation axes of the lifting guardrail 100 This application is not limited to the device or torsion spring.
  • the present application also proposes a nursing bed with the lifting guardrail 100 of the embodiment of the second aspect described above.
  • the structure is simple and the operation is convenient, and it can also avoid the excessive distance between the upper guard bar 10 and the lower guard bar 20. Cannot protect.
  • the lifting guardrail 100 can convert the variable speed rotation of the second link into the variable speed linear motion at the end of the motion, and the cushioning effect is relatively good.
  • a lifting guardrail 100 includes: an upper guard rod 10, a lower guard rod 20, a middle telescopic rod 30, a link mechanism 40c, and a buffer mechanism 50c.
  • the middle telescopic rod 30 is provided between the upper guard rod 10 and the lower guard rod 20.
  • the two ends of the middle telescopic rod 30 are provided with a link mechanism 40 c, and the link mechanism 40 c includes a first link 410 and a second link 420.
  • One end of the first connecting rod 410 is rotatably connected to the middle telescopic rod 30 and the other end is rotatably connected to the upper guard rod 10.
  • the middle telescopic rod 30, the upper guard rod 10, and the first connecting rods 410 on the left and right sides together form a four-bar linkage structure.
  • One end of the second connecting rod 420 is rotatably connected to the middle telescopic rod 30 and the other end is rotatably connected to the lower guard rod 20.
  • the middle telescopic rod 30, the lower guard rod 20, and the second connecting rods 420 on the left and right sides together form another four-bar linkage structure.
  • a buffer mechanism 50c is provided between the second connecting rod 420 and the lower guard rod 20, that is, a buffer mechanism 50c is provided between the second connecting rod 420 on the left and right sides and the lower guard rod 20 to ensure a balanced buffer effect on both sides.
  • the buffer mechanism 50c includes a linkage member 510 and a variable resistance member 520.
  • the linkage member 510 has a moving end (not shown in the figure) connected to the variable resistance member 520.
  • One end of the linkage member 510 is connected to the second link 420 to convert the variable speed rotation of the second link 420 into a variable speed linear motion at the end of the motion. In this way, the component force of the second link 420 in the vertical direction can be offset, thereby reducing the rotational force of the second link 420 and reducing the load of the buffer mechanism 50c.
  • the variable resistance member 520 is provided on the lower guard rod 20. The variable resistance member 520 is configured to receive the greater the speed, the greater the resistance.
  • variable resistance member 520 When the upper guard rod 10 is lowered, rotating the first connecting rod 410 will give the second connecting rod 420 an edge.
  • the gradually increasing force in the rod direction drives the variable resistance member 520 to accelerate compression. Since the resistance of the variable resistance member 520 is proportional to the compression speed, the greater the compression speed, the greater the resistance. Therefore, when the variable resistance member 520 acts as a buffer
  • the lifting guardrail 100 can be slowly lowered during the entire descending process, and the buffering effect is better.
  • variable speed rotation of the second link 420 can be converted into the variable speed linear motion at the end of the motion by setting the buffer mechanism 50c.
  • the lifting guardrail 100 maintains a slower lowering effect, and the cushioning effect is relatively good, which can effectively avoid the situation of pinching fingers, and because the friction cushioning method is not adopted, there will be no friction loss of parts, and the overall service life longer.
  • variable resistance member 520 is a damper
  • the linkage member 510 is a connecting rod, one end of the connecting rod is rotatably connected to the second link 420, and the other end of the connecting rod is configured as a moving end, Rotate the connection damper.
  • the rotational force of the second connecting rod 420 turns the entire connecting rod to rotate, and the final output is the variable-speed linear motion at the end of the motion, which is then buffered by the damper.
  • This buffer mechanism 50c has a simple structure and is easy to install.
  • the damper is any one of a hydraulic damper, a gas damper, and an electromagnetic damper.
  • variable resistance member 520 may also be other variable resistance devices or components with variable resistance functions.
  • the variable resistance member 520 may be a torsion spring. One end of the torsion spring is fixed on the lower guard rod 20, and the other end is connected to The rods are connected by rotation, which can also achieve a better cushioning effect.
  • the linkage 510 may also be other linkage components.
  • the linkage 510 includes a gear (not shown in the figure) and a rack (not shown in the figure), and the gear is arranged on the second connecting rod 420 and the lower guard rod.
  • the rack meshes with gears and slides horizontally on the lower guard bar 20. The end of motion is formed on the rack.
  • This method can also convert the variable speed rotation of the second link 420 into variable linear motion.
  • the linkage 510 includes a worm wheel (not shown in the figure) and a worm (not shown in the figure).
  • the worm wheel is arranged on the shaft connecting the second connecting rod 420 and the lower guard rod 20, and the worm is arranged on the lower guard rod 20 and can be Moving in the horizontal direction, the worm gear meshes with the worm, which can also convert the variable speed rotation of the second connecting rod 420 into a variable speed linear motion.
  • the worm wheel and the worm do not have a self-locking function.
  • the lifting guardrail 100 further includes: a rolling body 60c and a support 70c.
  • the rolling body 60c is provided on the moving end of the connecting rod.
  • the support 70c is provided on the lower guard rod 20, and the rolling body 60c stops Abut on the support 70c.
  • the rolling element 60c is a rolling bearing or a roller
  • the support 70c is a horizontal support plate, which has a simple structure and is convenient to install.
  • the rolling element 60c can also be other rolling elements, which will not be repeated here.
  • the damper is partially abutted on the support 70c, and a fixing seat 202 is provided on the lower guard rod 20.
  • the fixing seat 202 is connected to the damper, that is, the support 70c and the fixing Under the joint action of the seat 202, the installation of the damper is more reliable.
  • the left end of the damper is fixed on the fixing seat 202
  • the right end of the damper is fixed on the support 70c
  • the output rod of the damper is located at the right end and rotates with the connecting rod. Connected.
  • the output rod of the damper is provided with a connecting block 5201, the output rod can be rotatably connected to the connecting rod through the connecting block 5201, and the rolling body 60c can be provided on the connecting block 5201.
  • the upper guard rod 10 has a first accommodating space (not shown in the figure), and the first connecting rod 410 is provided in the first accommodating space. It can be understood that the first connecting rod 410 and The rotating end connected to the upper guard bar 10 is arranged in the first accommodating space, so that the first connecting rod 410 is partially hidden in the upper guard bar 10, and the appearance of the lifting guardrail 100 is not affected.
  • the lower guard rod 20 has a second accommodating space 201, and the second connecting rod 420 is arranged in the second accommodating space 201. Similarly, the rotating end of the second connecting rod 420 and the lower guard rod 20 is arranged in the second accommodating space 201 Therefore, the second connecting rod 420 is partially hidden in the lower guardrail 20, and the appearance of the lifting guardrail 100 is not affected.
  • the buffer mechanism 50c is provided in the second receiving space 201, and the buffer mechanism 50c is provided on the side of the second link 420 away from the end of the lower guard rod 20, In this way, the space of the lower guardrail 20 is fully utilized, which has the advantages of small size and compact layout, and can also avoid affecting the appearance of the lifting guardrail 100.
  • the second accommodating space 201 is configured such that when the upper guard bar 10 is lowered to fit the lower guard bar 20, the middle telescopic rod 30 and the link mechanism 40c can be accommodated in the second accommodating space 201 In this way, when the lifting guardrail 100 is stowed, it has a beautiful appearance and occupies a small space.
  • the upper guard bar 10 and the lower guard bar 20 have the same structure.
  • the lower guard bar 20 includes a first connecting plate 210 and a second connecting plate 220 connected to the first connecting plate 210.
  • a second receiving space 201 is defined between the connecting plate 220 and the first connecting plate 210.
  • the lower guard rod 20 further includes a sheath 230.
  • the two ends of the lower guard rod 20 in the length direction are provided with sheaths 230.
  • the ends of the first connecting plate 210 and the second connecting plate 210 The end of the plate 220 is set in the sheath 230.
  • the sheath 230 can play a protective role to prevent the left and right ends of the lower guard rod 20 from scratching human hands.
  • the sheath 230 can be made of rubber material, which has a better Protective effects.
  • the sheath 230 may be provided with rounded corners (not shown in the figure). It is worth noting that the middle telescopic rod 30 is composed of pipe fittings whose two ends can be telescopic. For details, please refer to the middle telescopic rod in the prior art, which will not be repeated here.
  • a lifting guardrail 100 includes: an upper guard bar 10, a lower guard bar 20, a middle telescopic bar 30, a link mechanism 40c, and a buffer mechanism 50c.
  • the middle telescopic rod 30 is provided between the upper guard rod 10 and the lower guard rod 20.
  • the two ends of the middle telescopic rod 30 are provided with a link mechanism 40c.
  • the link mechanism 40c includes a first link 410 and a second link 420.
  • One end of the first link 410 is rotatably connected to the middle telescopic rod 30 and the other end is rotatably connected to
  • For the guard rod 10 one end of the second connecting rod 420 is rotatably connected to the middle telescopic rod 30 and the other end is rotatably connected to the lower guard rod 20.
  • a buffer mechanism 50 c is provided between the second connecting rod 420 and the lower guard rod 20, and the buffer mechanism 50 c includes a linkage member 510 and a variable resistance member 520.
  • the linkage member 510 has a moving end connected to the variable resistance member 520.
  • One end of the linkage member 510 is connected to the second link 420 to convert the variable speed rotation of the second link 420 into a variable speed linear motion at the end of the motion.
  • the variable resistance member 520 is arranged below On the guard bar 20, the variable resistance member 520 is configured such that the greater the speed it receives, the greater the resistance.
  • the variable resistance member 520 is a hydraulic damper; the linkage member 510 is a connecting rod, one end of the connecting rod is rotatably connected to the second connecting rod 420, the other end of the connecting rod is configured as a moving end, and the moving end is rotatably connected to the hydraulic damper.
  • the lifting guardrail 100 further includes a rolling body 60c and a supporting member 70c.
  • the rolling body 60c is provided on the moving end of the connecting rod, the supporting member 70c is provided on the lower guard bar 20, and the rolling body 60c is abutted on the supporting member 70c.
  • the rolling element 60c is a rolling bearing, and the support 70c is a horizontal support plate.
  • the hydraulic damper partly abuts on the support 70c, a fixing seat 202 is provided on the lower guard rod 20, and the fixing seat 202 is connected to the hydraulic damper.
  • the output rod of the damper is provided with a connecting block 5201, the output rod can be rotatably connected with the connecting rod through the connecting block 5201, and the rolling body 60c can be provided on the connecting block 5201.
  • the upper guard bar 10 has a first accommodating space, and the first connecting rod 410 is disposed in the first accommodating space.
  • the lower guard rod 20 has a second accommodating space 201, and the second connecting rod 420 is provided in the second accommodating space 201.
  • the buffer mechanism 50c is provided in the second accommodating space 201, and the buffer mechanism 50c is provided on the side of the second link 420 away from the end of the lower guard rod 20.
  • the second accommodating space 201 is configured such that when the upper guard rod 10 is lowered to fit the lower guard rod 20, the middle telescopic rod 30 and the link mechanism 40 c can be received in the second accommodating space 201.
  • the upper guard bar 10 and the lower guard bar 20 have the same structure.
  • the lower guard bar 20 includes a first connecting plate 210 and a second connecting plate 220 connected to the first connecting plate 210.
  • a second accommodating space 201 is defined.
  • the lower guard rod 20 further includes a sheath 230, and both ends of the length direction of the lower guard rod 20 are provided with a sheath 230, and the end of the first connecting plate 210 and the end of the second connecting plate 220 are arranged in the sheath 230 .
  • a nursing bed according to an embodiment of the present application includes the lifting guardrail 100 of the foregoing third aspect embodiment.
  • the lifting guardrail 100 can be lifted up and down, wherein the buffer mechanism 50c of the lifting guardrail 100 can convert the variable speed rotation of the second link 420 into a variable speed linear motion at the end of the motion ,
  • the buffer mechanism 50c of the lifting guardrail 100 can convert the variable speed rotation of the second link 420 into a variable speed linear motion at the end of the motion .
  • the lifting guardrail 100 can maintain a slower descent effect, and the cushioning effect is relatively good, which can effectively avoid the situation of pinching the fingers, and because the friction cushioning method is not used , So there is no friction loss of parts, and the overall service life is relatively long.
  • the following describes the lifting guardrail 100 of the embodiment of the fourth aspect of the present application according to FIGS. 17-28.
  • the lifting guardrail 100 remains parallel during the lifting process, which has good stability and high safety.
  • the lift guardrail 100 includes: at least two main poles 1d and at least three Two connecting rods 2d.
  • the main rod 1d includes a lower guard rod 20 and a middle telescopic rod 30.
  • the middle telescopic rod 30 is located on one side of the lower guard rod 20.
  • the middle telescopic rod 30 is a telescopic rod and includes at least two telescopic sections. Each telescopic section includes a first telescopic section 31 and a second telescopic section 32.
  • the lifting guardrail 100 includes at least two main poles 1d. As shown in FIG. 17, only two main poles 1d are provided, that is, the lower guardrail 20 and the middle telescopic pole 30 are included, so as to realize the lifting Lifting of the guardrail.
  • the lifting guardrail 100 includes at least two main poles 1d, which may be more than two main poles 1d, as shown in FIGS. 18-21, 23, 27 and 28.
  • the connecting rod 2d includes: a first lower connecting rod 21, a second lower connecting rod 22, and a third connecting rod 23.
  • One end of the first lower connecting rod 21 is rotatably connected to the lower guard rod 20, and the other end of the first lower connecting rod 21 It is rotatably connected to the first telescopic section 31, one end of the second lower link 22 is rotatably connected to the lower guard rod 20, and the other end of the second lower link 22 is rotatably connected to the second telescopic section 32.
  • the lifting guardrail 100 includes a middle telescopic rod 30, and the middle telescopic rod 30 forms a telescopic rod through at least two telescopic sections, that is, the middle telescopic rod 30 can be extended and adjusted in length.
  • the middle telescopic rod 30 and the lower guard rod 20 Between the middle telescopic rod 30 and the lower guard rod 20, the first lower link 21 and the second lower link 22 are connected, and the two ends of the first lower link 21 are respectively connected to the first telescopic section 31 and the lower.
  • the two ends of the second lower connecting rod 22 are respectively connected between the second telescopic section 1 and the two ends of the lower guard rod 20. Therefore, a mechanism can be formed between the first lower link 21, the lower guard rod 20, the second lower link 22 and the middle telescopic rod 30 to allow the middle telescopic rod 30 to be raised and lowered relative to the lower guard rod 20.
  • the telescopic section adopts at least a two-section structure, that is, at least a first telescopic section 31 and a second telescopic section 32 are included.
  • first telescopic section 31 and a second telescopic section 32 are included.
  • one end of the first lower link 21 can be connected to one end of the first telescopic section 31, and the other end of the first lower link 21 is connected to the lower guard rod 20.
  • the direction of the end of the first telescopic section 31 connected to the first lower connecting rod 21 is the same as that of the end of the lower guard rod 20 connected to the first telescopic section 31.
  • one end of the second lower link 22 may be connected to one end of the second telescopic section 32, and the other end of the second lower link 22 is connected to the other end of the lower guard rod 20, and The end of the second telescopic section 32 connected to the second lower connecting rod 22 is in the same direction as the end of the lower guard rod 20 connected to the second telescopic section 32.
  • one end of the third link 23 is rotatably connected to the lower guard rod 20, and the other end of the third link 23 is rotatably connected to the first telescopic section.
  • both ends of the third link 23 are pivotally connected to the first telescopic section 31 and the lower guard rod 20, so that the third link 23, the first telescopic section 31, the first lower link 21 and the lower guard rod
  • a rotatable parallelogram structure is formed between 20, so that when the height position of the middle telescopic rod 30 is changed so that it can be raised and lowered relative to the lower guard rod 20, the parallelogram structure can ensure the middle telescopic rod 30 During the lifting process, it is always kept relatively parallel to the lower guard bar 20, and no deviation or twisting occurs. Furthermore, the lifting guardrail 100 with the same can ensure stable support for the user during the lifting process, and the safety is higher.
  • the lower guardrail 20 and the middle telescopic pole 30 are provided, and at least three connecting rods 2d pivotally connected between the lower guardrail 20 and the middle telescopic pole 30 are provided to realize the lower guardrail.
  • the lifting between the rod 20 and the intermediate telescopic rod 30 can facilitate the height adjustment to suit the patient.
  • a third connecting rod 23 and a first lower connecting rod 21 are pivotally connected to the first telescopic section 31, and the third connecting rod 23 and the first lower connecting rod 21
  • the other end is also pivotally connected to the lower guard rod 20, thereby forming a parallelogram structure, which can ensure that the lower guard rod 20 is always parallel to the lower guard rod 20 when it is raised and lowered relative to the lower guard rod 20.
  • the intermediate telescopic rod 30 is prevented from torsion or deviation during the lifting process, and the safety performance of the lifting guardrail 100 is improved.
  • the main pole 1d also includes an upper guard bar 10, the upper guard bar 10 and the lower guard bar 20 are located on both sides of the middle telescopic rod 30, that is, the middle telescopic rod 30 is located at the lower guard rod 20 And the middle position of the upper guard bar 10.
  • the connecting rod 2d includes a first upper connecting rod 24 and a second upper connecting rod 25.
  • One end of the first upper connecting rod 24 is rotatably connected to the upper guard rod 10, and the other end of the first upper connecting rod 24 is rotatably connected to the telescopic section.
  • One end of the second upper link 25 is rotatably connected to the upper guard rod 10, the other end of the second upper link 25 is rotatably connected to the telescopic section, and the second upper link 25 is connected to the first upper link 24.
  • the expansion section is different.
  • the middle telescopic rod 30 includes at least two telescopic sections
  • the connecting rod 2d includes a second upper connecting rod 25 and a first upper connecting rod 24. Both ends of the first upper connecting rod 24 Respectively rotatably connected to a telescopic section of the upper guard rod 10 and the middle telescopic rod 30, the telescopic section may be the first telescopic section 31, the second telescopic section 32, or other telescopic sections on the middle telescopic rod 30 .
  • both ends of the first upper link 24 are respectively rotatably connected to the other telescopic section of the upper guard rod 10 and the middle telescopic rod 30, that is, the telescopic section connected by the first upper link 24 and the second upper link 25.
  • the sections are different.
  • the first upper link 24 can be connected to the first telescopic section 31, and the second upper link 25 can be connected to the second telescopic section 32. If the first upper link 24 can also be connected to the second telescopic section 32, the second lower link 22 can be connected to the first telescopic section 31.
  • the upper guard rod 10, the middle telescopic rod 30, the second upper link 25 and the first upper link 24 are pivotally connected in turn to form a structure that can be raised and lowered, that is, the upper guard rod 10 can be made relative to the middle Lifting of the telescopic rod 30.
  • the lower guard rod 20, the first lower link 21, the middle telescopic rod 30, and the second lower link 22 are pivotally connected in turn to form a structure that can make the middle telescopic rod 30 rise and fall relative to the lower guard rod 20 .
  • the middle telescopic rod 30 to be raised and lowered relative to the lower guard rod 20, and the upper guard rod 10 can be raised and lowered relative to the middle telescopic rod 30, the raising and lowering of the raising and lowering guardrail 100 can be realized, and by designing the aforementioned parallelogram
  • the structure can effectively raise and lower the lifting guardrail 100 for stability, and improve the safety performance of the lifting guardrail 100 when it is raised and lowered.
  • the first upper link 24 is connected to the first telescopic section 31, and a first engagement is connected between the rotating shaft of the first lower link 21 and the rotating shaft of the first upper link 24 Component 10d.
  • the first upper link 24 is connected to the first telescopic section 31, and the first lower link 21 and the first upper link 24 are connected to one end of the first telescopic section 31 Through the connection of the first engagement assembly 10d, the first lower link 21 and the first upper link 24 can be rotated at the same time.
  • the second upper link 25 is connected to the second telescopic section 1, and a second lower link 22 is connected to the shaft of the second upper link 25. Engagement component 20d.
  • the second lower link 22 and the second upper link 25 are connected to the same telescopic section.
  • the second lower link 22 and the second upper link 25 is connected to the second telescopic section 32 at the same time, and the end of the second lower link 22 and the second upper link 25 connected to the second telescopic section 32 is connected by the second engagement assembly 20d, thereby realizing the second lower link
  • the rod 22 and the second upper link 25 rotate at the same time
  • At least one of the lower guard rod 20 and the upper guard rod 10 is provided in a receiving groove 30d that opens toward the middle telescopic rod 30.
  • the middle telescopic rod 30 is shortened to the first set length, the middle telescopic rod 30 At least part of the telescopic rod 30 is located in the receiving groove 30d.
  • the middle telescopic rod 30 is connected by two telescopic sections, which can achieve expansion and contraction, that is, the length of the middle telescopic rod 30 can be adjusted, and at least one of the lower guard rod 20 and the upper guard rod 10 is provided with a receiving groove 30d, And the accommodating groove 30d opens toward the middle telescopic rod 30, so that after the middle telescopic rod 30 is shortened to a certain length, it can be stored in the accommodating groove 30d, that is, when the middle telescopic rod 30 is shortened to the first set length, it can be stored in the container. In the slot 30d.
  • the receiving groove 30d may be provided only on the lower guard bar 20, or only the receiving groove 30d may be provided on the upper guard bar 10, or the receiving groove 30d may be provided on the lower guard bar 20 and the upper guard bar 10 at the same time.
  • the first telescopic section 31 and the second telescopic section 32 of the middle telescopic rod 30 can be telescopic, thereby adjusting the length of the middle telescopic rod 30, and the middle telescopic rod 30 can be telescopic, realizing its height relative to the lower guard rod 20
  • the lifting also enables the upper guard rod 10 to be raised and lowered relative to the middle telescopic rod 30.
  • the intermediate telescopic rod 30 can be shortened and accommodated in the receiving groove 30d to make the height complete.
  • the intermediate telescopic rod 30 is completely stored in the receiving groove 30d, and will not be exposed to the outside, and the appearance structure of the lifting guardrail 100 is more complete.
  • both the lower guard rod 20 and the upper guard rod 10 are provided with accommodating grooves 30d.
  • the middle telescopic rod 30 is shortened to the first set length, a part of the middle telescopic rod 30 is located in one of the accommodating grooves. In the groove 30d, another part of the middle telescopic rod 30 is located in the other receiving groove 30d.
  • the first telescopic section 31 and the second telescopic section 32 of the intermediate telescopic rod 30 can be telescopic, so as to adjust the length of the intermediate telescopic rod 30, and the intermediate telescopic rod 30 can be telescopic to achieve
  • the upper guard rod 10 can also be raised and lowered relative to the middle telescopic rod 30.
  • the intermediate telescopic rod 30 when the height of the intermediate telescopic rod 30 is reduced, that is, when the height of the lifting guardrail 100 is lowered, the intermediate telescopic rod 30 can be shortened and accommodated in the receiving groove 30d, so that the height can be completely reduced.
  • the middle telescopic rod 30 is completely stored in the receiving groove 30d, and will not be exposed to the outside, and the appearance structure of the lifting guardrail 100 is more complete.
  • both the lower guard rod 20 and the upper guard rod 10 are provided with an accommodating groove 30d facing the opening toward the middle telescopic rod 30, the middle telescopic rod 30 is accommodated inside the accommodating groove 30d, and a part of the middle telescopic rod 30 is accommodated in the lower guard rod.
  • the middle telescopic rod 30 is accommodated in the accommodating groove 30d of the upper guard rod 10, thereby realizing that all of the middle telescopic rod 30 is accommodated in the accommodating groove 30d, and thus the lifting guardrail 100 is completely lowered Later, the middle telescopic rod 30 is not exposed to the outside of the lifting guardrail 100, which ensures the overall appearance of the lifting guardrail 100 and also provides protection for the middle telescopic rod 30.
  • a torsion spring 40d is provided at the rotating shaft of at least one connecting rod 2d. That is, a torsion spring 40d can be provided at the rotation axis of at least one connecting rod 2d to provide a certain external force for the rotation of the connecting rod 2d.
  • the torsion spring 40d can provide a lowering of the connecting rod 2d.
  • the connecting rod 2d rotates and returns to work by the opposite external force, so that the lifting barrier 100 can be slowly lowered, thereby preventing the lifting barrier 100 from being suddenly lowered in height to pinch the user's hands, and causing the lifting barrier 100 to slowly descend, which can lower the lifting barrier 100.
  • the sound generated by the contact between the main rods 1d gives the user a better experience.
  • the telescopic sections of the intermediate telescopic rod 30 are all pipe sections, and a plurality of pipe sections are sequentially sleeved along the length direction of the intermediate telescopic rod 30, and the pipe sections located in the inner layer are connected with guides.
  • the block 3d and the guide block 3d are used to slide in the pipe section located on the outer layer.
  • the intermediate telescopic rod 30 includes a plurality of telescopic sections, a plurality of internal pipe sections of the telescopic section, that is, a tubular structure, and the plurality of tubular structures are sequentially sleeved, thereby forming the telescopic intermediate rod 30 that can be telescoped.
  • a plurality of pipe sections are sleeved and connected, and the pipe section sleeved on the outside can slide the pipe section inside it.
  • the outer peripheral surface of the end of the pipe section inside is provided with a slider.
  • the block can make the pipe section located inside slide in the pipe section sleeved on the outside.
  • the inner wall surface of the outer pipe section may be provided with a corresponding slide groove or slide rail 4d, so that the pipe section that slides inside it can be connected by sliding in a sliding manner in which the slider and the slide groove or slide rail 4d cooperate. , So as to realize the expansion and contraction of the intermediate telescopic rod 30.
  • the lifting guardrail 100 is provided with at least one locking structure 5d.
  • the locking structure 5d includes a locking portion 51d and an unlocking portion 52d.
  • the locking portion 51d is used to extend the telescopic rod 30 in the middle. The locking is performed when the second set length is reached, and the unlocking portion 52d is used to unlock the locking portion 51d when triggered.
  • the locking structure 5d can be locked when the middle telescopic rod 30 is extended to the second length, that is, when the lifting guardrail 100 rises, the length of the middle telescopic rod 30 is extended, and the length of the middle telescopic rod 30 is extended to After a certain length, the rising height of the lifting barrier 100 is locked so that the lifting barrier 100 cannot continue to rise or fall, thereby stabilizing the lifting barrier 100 at the current height, and ensuring that the lifting barrier 100 does not suddenly lower the height to put the user in danger.
  • the locking structure 5d includes a locking portion 51d and an unlocking portion 52d.
  • the locking portion 51d can lock the height of the lifting guardrail 100 to prevent the lifting guardrail 100 from being suddenly lowered when supporting the user when it is raised.
  • the security poses hidden dangers.
  • the unlocking part 52d can lower the height of the lifting guardrail 100 when it is triggered, thereby realizing the automatic lowering of the lifting guardrail 100, and the status of the unlocking part 52d and the locking part 51d can facilitate the user to confirm when the lifting guardrail 100 is raised. Is the state stable?
  • the locking portion 51d satisfies at least one of the following conditions: the locking portion 51d is used for locking between the main rod 1d and the connecting rod 2d, and the locking portion 51d is used for locking adjacent two of the intermediate telescopic rod 30. Between two telescopic rods.
  • the locking portion 51d may be provided between the main rod 1d and the connecting rod 2d, so that the lifting guardrail 100 can be raised between the connecting rod 2d and the connecting rod 2d.
  • the main rods 1d rotate relative to each other, and after rotating to a certain degree, the rotation angle between the connecting rod 2d and the main rod 1d is locked by the locking portion 51d, so that the lifting guardrail 100 is maintained at the current height.
  • the locking portion 51d may be provided between the middle telescopic rod 30 and two adjacent telescopic rods, so that the length of the middle telescopic rod 30 can be adjusted to After the second set length, the telescopic function of the middle telescopic rod 30 is locked, that is, the middle telescopic rod 30 cannot continue to adjust the telescopic length, thereby ensuring that the lifting guardrail 100 is stable at the current height and improving the stability of the lifting guardrail 100.
  • the locking portion 51d is used for locking between the main rod 1d and the connecting rod 2d, so that the connecting rod 2d and the main rod 1d can be locked by a relative rotation angle. Therefore, the lifting height of the lifting guardrail 100 is fixed, which cannot ensure the stability of the lifting guardrail 100 in use.
  • the locking portion 51d includes: a first hook 511, a second hook 512, and a retaining elastic member 513.
  • the first hook 511 is connected to the main rod 1d through a rotating shaft, and the second hook
  • the hook 512 is integrally formed on the connecting rod 2d, and the second hook 512 is located on the side of the shaft of the connecting rod 2d facing the first hook 511.
  • the second hook 512 is The first hook 511 is separated, and the second hook 512 cooperates with the first hook 511 when the intermediate telescopic rod 30 is extended to the second set length.
  • the locking portion 51d is rotatably arranged on the main rod 1d, and the locking portion 51d is provided with a first hook 511, and the connecting rod 2d is rotatably connected to one end of the main rod 1d, and is provided with a second hook 512.
  • a hook 511 and a second hook 512 can be hooked.
  • the middle telescopic rod 30 can be extended and contracted. During the raising process of the lifting guardrail 100, the middle telescopic rod 30 can be extended to a second set length.
  • the intermediate telescopic rod 30 can be shortened to the first set length, and is completely stored in the receiving groove 30d. Therefore, when the intermediate telescopic rod 30 is extended to the second set length, that is, when the height of the lifting guardrail 100 rises, the first hook 511 can be hooked with the second hook 512, thereby stabilizing the lifting guardrail 100 in the current position. Height, to ensure the stability of the support for the user.
  • the intermediate telescopic rod 30 is shortened to the first set length, that is, when the height of the lifting guardrail 100 is lowered, the first hook 511 can be disengaged from the second hook 512.
  • the holding elastic member 513 is connected between the main rod 1d and the first hook 511, and the holding elastic member 513 is used to drive the first hook 511 to be locked when the intermediate telescopic rod 30 is at the second set length.
  • the second hook 512 On the second hook 512.
  • the retaining elastic member 513 can make the locking portion 51d rotate relative to the second hook 512, so that when the intermediate telescopic rod 30 is extended to the second set length, The first hook 511 and the second hook 512 are automatically hooked to realize the self-locking after the height of the lifting guardrail 100 is raised, and the stability of the lifting guardrail 100 is maintained.
  • the retaining elastic member 513 may also be a torsion spring 40d, and the torsion force of the torsion spring 40d realizes the automatic rotation of the first hook 511, that is, the first hook 511 can automatically rotate to hook with the second hook 512 After the lifting guardrail 100 rises to a certain position, the height of the lifting guardrail 100 is automatically locked.
  • the first hooks 511 of the two locking structures 5d are located at both ends of the same main pole 1d, and the unlocking portion 52d of each locking structure 5d is For the puller connected to the first hook 511, both ends of the main rod 1d are respectively provided with end grooves 6d for accommodating the puller.
  • both ends of the same main pole 1d are provided with a locking structure 5d, and both ends of the same main pole 1d are provided with end grooves 6d.
  • the unlocking portion 52d may be a paddle.
  • the undulating paddle causes the locking structure 5d to unlock the connecting rod 2d and the main rod 1d, that is, when the connecting rod 2d and the main rod 1d resume rotation, the paddle can be accommodated in In the end groove 6d, the paddles are prevented from protruding from both ends of the main pole 1d, so that the external structure of the lifting guardrail 100 is incomplete, and the overall external lines are not smooth.
  • the locking structure 5d is rotatably arranged on the main rod 1d, and when the intermediate telescopic rod 30 is extended to the second set length, the locking part 51d provides a rotational force through the retaining elastic member 513, so that the first hook 511 is connected to the connecting rod.
  • the second hook 512 of the rod 2d is hooked to lock the rotation between the connecting rod 2d and the main rod 1d, which can maintain the lifting height of the lifting guardrail 100 and provide stable support for the user.
  • the locking portion 51d can be rotated by turning the paddle of the locking structure 5d, so that the first hook 511 and the second hook 512 can be separated, so that the connecting rod can be disengaged.
  • the rotation between 2d and the main pole 1d is restored to reduce the height of the lifting guardrail 100.
  • the lifting guardrail 100 realizes automatic descent through its own gravity, thereby realizing the automatic descent of the lifting guardrail 100, and the connecting rod 2d and the rotating shaft of the lifting guardrail 100 are provided with a torsion spring 40d, which can be used when the lifting guardrail 100 is automatically lowered
  • the torsion of the torsion spring 40d reduces the automatic descent speed of the lifting guardrail 100, thereby avoiding pinching of the user's hand, and avoiding the collision between the main poles 1d due to the excessively fast descending speed of the lifting guardrail 100 causing noise.
  • an anti-collision block 50d is also provided. It is located on the side close to the end of the main pole 1d. Therefore, the rotation of the connecting rod 2d can be limited, and the rotation angle of the connecting rod 2d can be prevented from being too large.
  • the first meshing assembly 10d and the second meshing assembly 20d each include two gears 101 that mesh with each other.
  • the two gears 101 are respectively connected to a connecting rod 2d, thereby connecting to the same telescopic
  • the two connecting rods 2d of the segment can be rotated synchronously through the meshing gears 101.
  • the synchronous rotation of the two connecting rods 2d can also be realized, so as to ensure that the lifting guardrail 100 is in During the lifting process, the multiple main rods 1d maintain parallel positions, and no tilt occurs.
  • the multiple main rods 1d are in the same plane, that is, the multiple main rods 1d will not be twisted during the lifting process, and the stability is high.
  • the present application also proposes a nursing bed with the lifting guardrail 100 of the embodiment of the fourth aspect described above.
  • the nursing bed includes the lifting guardrail 100 of the embodiment of the aforementioned fourth aspect.
  • the lower connecting rods 21 are pivotally connected to the first telescopic section 31, and the other ends of the third connecting rod 23 and the first lower connecting rod 24 are also pivotally connected to the lower guard rod 20, thereby forming a parallelogram.
  • the structure can ensure that when the upper guard bar 10 is lifted relative to the lower guard bar 20, it is always parallel to the lower guard bar 20, thereby preventing the middle telescopic bar 30 from twisting or shifting during the lifting process, and improving the care bed during use. Safety performance.
  • connection should be understood in a broad sense, unless otherwise clearly specified and limited.
  • it can be a fixed connection or a detachable connection.
  • Connected or integrally connected it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • connection should be understood in a broad sense, unless otherwise clearly specified and limited.
  • it can be a fixed connection or a detachable connection.
  • Connected or integrally connected it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • the specific meanings of the above terms in this application can be understood under specific circumstances.

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Abstract

一种升降护栏(100)及护理床,其中升降护栏(100)包括:上护杆(10)、下护杆(20)和中间伸缩杆(30),其中中间伸缩杆(30)可升降地设在上护杆(10)和下护杆(20)之间。该升降护栏可改善现有护栏的栏杆和升降驱动机构在收缩时依旧暴露的问题,结构简单,操作方便,防护效果好。

Description

升降护栏和具有其的护理床
相关申请的交叉引用
本申请基于申请号为202010375192.X、申请日为2020年05月06日的中国专利申请“一种升降护栏及护理床”、申请号为202010811624.7、申请日为2020年08月13日的中国专利申请“升降护栏和具有其的护理床”、申请号为202011446073.5、申请日为2020年12月08日的中国专利申请“护栏及护理床”、申请号为202023343157.4申请日为2020年12月30日的中国专利申请“护栏”提出,并要求上述中国专利申请的优先权,上述中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及医疗器械技术领域,具体而言,涉及一种升降护栏及具有其的护理床。
背景技术
护理床主要由床体、护栏、床头板、床尾板及其配件组成。其中,护栏通常需具备升降功能,以便于人们上下床。目前,市面上现有的护栏,在处于收缩状态时,护栏的栏杆仍然会暴露在病人视野中,对病人会产生不友好的心理暗示,不利于病人疾病的恢复和身心健康。而相关技术中的升降杆通常只具有上下两个横杆,两个横杆之间的距离过大,容易降低防护效果。
现有市场上,不论是医用病床还是偏家居式的护理床,两侧升降护栏是必需的配件,目前国内外常见的升降护栏大体上是分为四种类别:圆管折弯拼接式、两级或三级垂直伸缩式,医用病床折叠式、旋转收缩式。其中第一种和第三种比较常见但第一种每次病人上下床都需要人工拆卸十分不方便,第三种比较常用于医院场所,比较单一,而且不符合法规中的负载及自动缓慢下降不夹手的要求,第二种和第四种是比较新颖的升降护栏,第二种由于是垂直伸缩的对整体的加工和安装精度都比较高,而且比较难以满足松开开关后自己缓慢下降且不夹手;最后一种是目前来说完美兼容法规及各方向要的方案。
目前,旋转收缩式的升降护栏中,最常见的是通过在下侧转动杆两侧贴PU或其他塑料来增大摩擦,从而起到松开开关后缓慢下降且不夹伤手的效果,但是,随着PU或者其他塑料的磨损,摩擦效果就会越来越差,直至最后摩擦片失效,整体缓冲效果不佳。
此外,常见护理床的升降护栏多为标准升降护栏,虽然升降护栏具备平行升降功能,但是,在升降护栏进行升降的过程中,无法保证升降护栏的多个主杆之间处于平行位置,由此使升降护栏在升降过程中发生倾斜或扭转,安全性低。
发明内容
本申请旨在至少解决现有技术中存在的技术问题之一。为此,本申请提出一种升降护栏,第一方面的升降护栏可改善现有升降护栏的栏杆和升降驱动机构在收缩时依旧暴露的问题。第二方面的升降护栏结构简单,操作方便,防护效果好。第三方面的升降护栏设置缓冲机构,可将第二连杆的变速转动转化为运动末端的变速直线运动,缓冲效果比较优秀。第四方面的升降护栏升降的过程中保持平行,稳定性好,安全性高。
本申请还旨在提出一种应用上述升降护栏的护理床。
下面描述本申请性多方面能优异的升降护栏所采用的技术方案。
根据本申请实施例的升降护栏,包括:上护杆;下护杆;中间伸缩杆,所述中间伸缩杆可升降地设在所述上护杆和所述下护杆之间。
本申请第一方面的升降护栏可改善现有升降护栏的栏杆和升降驱动机构在收缩时依旧暴露的问题,其附加技术特征如下:
进一步地,在本申请第一方面可选的实施例中,升降护栏还包括:第一上连杆、第二上连杆、第一下连杆和第二下连杆。中间伸缩杆位于上护杆和下护杆之间,中间伸缩杆包括可相对滑动的第一伸缩段和第二伸缩段。第一上连杆的上端铰接于上护杆,第一上连杆的下端铰接于第一伸缩段。第二上连杆的上端铰接于上护杆,第二上连杆的下端铰接于第二伸缩段。第一下连杆的上端铰接于第一伸缩段,第一下连杆的下端铰接于下护杆。第二下连杆的上端铰接于第二伸缩段,第二下连杆的下端铰接于下护杆。
上述技术方案中,第一上连杆的两端分别铰接于上护杆和第一伸缩段。第二上连杆的两端分别铰接于上护杆和第二伸缩段。第一下连杆的两端分别铰接于第一伸缩段和下护杆。第二下连杆的两端分别铰接于第二伸缩段和下护杆,当升降护栏要收起时,第一上连杆和第二上连杆能够带动上护杆向靠近下护杆的方向移动同时第一下连杆和第二下连杆能够带动中间伸缩杆向靠近下护杆的方向移动,当升降护栏要打开时,第一上连杆和第二上连杆能够带动上护杆向远离下护杆的方向移动同时第一下连杆和第二下连杆能够带动中间伸缩杆向远离下护杆的方向移动即上护杆和中间伸缩杆能够实现联动。并且,中间伸缩杆竖向上位于上护杆和下护杆之间,当升降护栏打开时,中间伸缩杆可以作为升降护栏的中间栏杆,避免上护杆和下护杆之间间距过大而无法起到防护作用。
在本申请第一方面可选的实施例中,第一上连杆的下端与第一下连杆的上端通过第一同步结构传动连接。
上述技术方案中,第一同步结构的设置使得第一上连杆和第一下连杆中的一个运动即能够带动另一个运动,从而实现升降护栏的上下同步运动,使得升降护栏的收起或打开时, 上护杆和中间伸缩杆的运动能够一致。
在本申请第一方面可选的实施例中,第一同步结构包括第一齿轮和第二齿轮;第一齿轮固定于第一上连杆的下端,第二齿轮固定于第一下连杆的上端,第一齿轮与第二齿轮啮合。
上述技术方案中,第一同步结构包括分别与第一上连杆和第一下连杆连接的第一齿轮和第二齿轮,即第一上连杆和第一下连杆通过齿轮同步传动连接,不仅同步效果好,而且结构简单,不会额外的增大升降护栏的结构。
在本申请第一方面可选的实施例中,第二上连杆的下端与第二下连杆的上端通过第二同步结构传动连接。
上述技术方案中,第二同步结构的设置使得第二上连杆和第二下连杆中的一个运动即能够带动另一个运动,从而实现升降护栏的上下同步运动,使得升降护栏的收起或打开时,上护杆和中间伸缩杆的运动能够一致。
在本申请第一方面可选的实施例中,第二同步结构包括第三齿轮和第四齿轮;第三齿轮固定于第二上连杆的下端,第四齿轮固定于第二下连杆的上端,第三齿轮与第四齿轮啮合。
上述技术方案中,第二同步结构包括分别与第二上连杆和第二下连杆连接的第三齿轮和第四齿轮,即第二上连杆和第二下连杆通过齿轮同步传动连接,不仅同步效果好,而且结构简单,不会额外的增大升降护栏的结构。
在本申请第一方面可选的实施例中,第一下连杆的下端与第二下连杆的下端通过第三同步结构传动连接。
上述技术方案中,由于升降护栏具有一定的长度,第一下连杆和第二下连杆在升降护栏的长度方向上间隔布置,那么第一下连杆的下端和第二下连杆的下端相对下护杆转动则存在延迟、不同步的情况,则第三同步结构的设置能够使得第一下连杆的下端和第二下连杆的下端同步运动,便于升降护栏的收起或打开。
在本申请第一方面可选的实施例中,第三同步结构包括第一同步轮、第二同步轮和柔性传动件;第一同步轮固定于第一下连杆下端,第二同步轮固定于所述第二下连杆的下端,柔性传动件以“8”字型绕法缠绕在第一同步轮和第二同步轮上。
上述技术方案中,第三同步结构为柔性的传动结构,适合较大距离之间的部件的同步传动,柔性传动件以“8”字型绕法绕设在第一同步轮和第二同步轮上,使得第一同步轮和第二同步轮转动方向相反,使得第一下连杆和第二下连杆能同步带动中间伸缩杆件上升或者下降。
在本申请第一方面可选的实施例中,升降护栏具有打开状态和收起状态,在打开状态下,上护杆与下护杆之间的间距大于在收起状态下上护杆与所述下护杆之间的间距;当升降护栏处于打开状态时,中间伸缩杆处于伸长状态;当升降护栏处于收起状态时,中间伸缩杆 处于缩短状态。
上述技术方案中,在升降护栏处于打开状态时,中间伸缩杆伸长,使得中间伸缩杆能够起到中间栏杆的作用,更好的起到防护作用。在升降护栏处于收起状态时,中间伸缩杆处于缩短状态,以使中间伸缩杆也能收起,使得收起,能够减小整个升降护栏在收起状态时的体积。
在本申请第一方面可选的实施例中,中间伸缩杆还包括锁组件和开锁组件,锁组件用于将中间伸缩杆锁定于伸长状态,开锁组件用于解除锁组件对中间伸缩杆的锁定。
上述技术方案中,锁组件能够使得中间伸缩杆锁定于伸长状态,以使升降护栏能够稳定的保持在打开状态,避免在上护杆的重力的作用下升降护栏自动切换为收起状态。开锁组件能够解除锁组件对中间伸缩杆的锁定,便于升降护栏收起。
在本申请第一方面可选的实施例中,第一伸缩段上设置有锁孔,锁组件设置在第二伸缩段上;锁组件包括用于***锁孔的锁销,开锁组件包括推块和按钮,推块用于推动锁销移动以使锁销退出锁孔,按钮设置在中间伸缩杆的一端,按钮用于触发推块动作。
上述技术方案中,锁组件和开锁组件的结构简单,并且按钮的设置便于用户驱动锁组件将中间伸缩杆解锁。
在本申请第一方面可选的实施例中,上护杆上设有第一容纳槽,下护杆上设有第二容纳槽;当升降护栏处于收起状态时,上护杆和下护杆并拢,中间伸缩杆收容在第一容纳槽和第二容纳槽内,第一上连杆和第二上连杆均收容在第一容纳槽内,第一下连杆和第二下连杆收容在第二容纳槽内。
上述技术方案中,当升降护栏收起时,中间伸缩杆被收容第一容纳槽和第二容纳槽内,第一上连杆和第二上连杆均收容在第一容纳槽内,第一下连杆和第二下连杆收容在第二容纳槽内,能够减小升降护栏收起时占用的空间,还能够避免中间伸缩杆、第一上连杆、第二上连杆、第二上连杆和第二下连杆暴露在用户可见的范围内造成不好的用户体验。
下面描述本申请第二方面的升降护栏的结构。
本申请第二方面的升降护栏结构简单,操作方便,防护效果好,其附加技术特征如下:
进一步地,在本申请第二方面可选的实施例中,升降护栏还包括:上升降组件,所述上升降组件设于所述上护杆和所述中间伸缩杆之间,以使得所述上护杆和所述中间伸缩杆相互靠近或者远离;下升降组件,所述下升降组件设于所述下护杆和所述中间伸缩杆之间,以使得所述下护杆和所述中间伸缩杆相互靠近或者远离;同步组件,所述同步组件设于所述上升降组件和所述下升降组件之间,以使得所述上升降组件和所述下升降组件进行同步地升降动作。
根据本申请实施例的升降护栏,通过在上护杆和中间伸缩杆之间设有上升降组件,在下 护杆和中间伸缩杆之间设有下升降组件,当上升降组件驱动所述上护杆进行升降动作时,通过在上升降组件和下升降组件之间设置的同步组件,可以使得上升降组件和下升降组件进行同步地升降动作,以使得上护杆和中间伸缩杆得以同步地进行升降,结构简单,操作方便,还可以避免上护杆和下护杆之间的距离过大而造成的无法防护。
在本申请第二方面可选的实施例中,所述上升降组件包括上升降杆,所述上升降杆的两端分别可转动地与所述上护杆和中间伸缩杆相连;所述下升降组件包括下升降杆,所述下升降杆的两端分别可转动地与所述下护杆和中间伸缩杆相连;所述同步组件包括相互啮合的第一配合齿轮和第二配合齿轮,所述第一配合齿轮设于所述上升降杆靠近所述中间伸缩杆的一端,所述第二配合齿轮设于所述下升降杆靠近所述中间伸缩杆的一端。
在本申请第二方面可选的实施例中,所述中间伸缩杆包括可相对滑动的第二伸缩段和第一伸缩段,所述上升降杆包括第二上连杆和第一上连杆,所述下升降杆包括第二下连杆和第一下连杆,所述第二上连杆和所述第二下连杆对应配合在所述第二伸缩段上,所述第一上连杆和所述第一下连杆对应配合在所述第一伸缩段上,所述同步组件设有两个,一个同步组件分别设于所述第二上连杆和所述第二下连杆之间,另一个所述同步组件设于所述第一上连杆和所述第一下连杆之间。
在本申请第二方面可选的实施例中,升降护栏还包括驱动组件,所述驱动组件设于所述中间伸缩杆上,所述驱动组件适于驱动所述第二伸缩段和所述第一伸缩段朝向相互远离或者相互靠近的方向活动。
在本申请第二方面可选的实施例中,所述上护杆和所述中间伸缩杆在升降方向上均具有打开位置和收合位置,所述升降护栏还包括锁止组件,所述锁止组件适于锁止上升降组件和/或下升降组件,以使得所述上护杆和所述中间伸缩杆保持在打开位置或者收合位置。
在本申请第二方面可选的实施例中,所述锁止组件包括设于所述上升降组件朝向所述上护杆一端的刚性卡钩,和设于所述上护杆上的弹性卡钩,所述刚性卡钩和所述弹性卡钩的开口方向相反,且在所述上护杆从所述收合位置朝向所述打开位置活动的过程中,所述刚性卡钩适于使得所述弹性卡钩发生弹性形变,所述弹性卡钩发生弹性形变后与所述刚性卡钩配合。
在本申请第二方面可选的实施例中,所述锁止组件还包括解锁件,所述解锁件设于所述上护杆上,所述解锁件适于使得所述弹性卡钩发生弹性形变,以使得所述弹性卡钩和所述刚性卡钩脱离配合。
在本申请第二方面可选的实施例中,升降护栏还包括:缓冲件,所述缓冲件设于所述上升降组件和上护杆之间、和/或所述上升降组件和中间伸缩杆之间、和/或下升降组件和下护杆之间、和/或下升降组件和中间伸缩杆之间,所述缓冲件适于减缓所述上护杆和中间伸缩 杆的升降速度。
在本申请第二方面可选的实施例中,所述缓冲件为防撞套管、阻尼器和扭簧中的至少一个。
下面描述本申请第三方面的升降护栏的结构。
本申请第三方面的所述升降护栏设置缓冲机构,可将第二连杆的变速转动转化为运动末端的变速直线运动,缓冲效果比较优秀,其附加技术特征如下:
进一步地,在本申请第三方面可选的实施例中,升降护栏还包括:连杆机构,所述中间伸缩杆的两端设有所述连杆机构,所述连杆机构包括第一连杆和第二连杆,所述第一连杆的一端转动连接所述中间伸缩杆且另一端转动连接所述上护杆,所述第二连杆的一端转动连接所述中间伸缩杆且另一端转动连接所述下护杆;缓冲机构,所述第二连杆和所述下护杆之间设有所述缓冲机构,所述缓冲机构包括联动件和变阻力件,所述联动件具有连接所述变阻力件的运动末端,所述联动件的一端连接所述第二连杆,以将所述第二连杆的变速转动转化为所述运动末端的变速直线运动,所述变阻力件设在所述下护杆上,所述变阻力件构造成受到的速度越大则阻力越大。
根据本申请实施例的升降护栏,通过设置缓冲机构可将第二连杆的变速转动转化为运动末端的变速直线运动,通过变阻力件的受到速度越大阻力越大的特性可使升降护栏保持更加缓慢的下降效果,缓冲效果比较优秀,可有效避免夹伤手指的情况出现,且由于不采用摩擦缓冲的方式,因此不会产生零部件的摩擦损耗,整体的使用寿命比较长。
在本申请第三方面可选的实施例中,所述变阻力件为阻尼器;所述联动件为连接杆,所述连接杆的一端转动连接所述第二连杆,所述连接杆的另一端构造成所述运动末端,所述运动末端转动连接所述阻尼器。
在本申请第三方面可选的实施例中,所述升降护栏还包括:滚动体,所述滚动体设在所述连接杆的所述运动末端上;支撑件,所述支撑件设在所述下护杆上,所述滚动体止抵在所述支撑件上。
在本申请第三方面可选的实施例中,所述阻尼器部分止抵在所述支撑件上,所述下护杆上设有固定座,所述固定座连接所述阻尼器。
在本申请第三方面可选的实施例中,所述上护杆具有第一容纳空间,所述第一连杆设在所述第一容纳空间内;所述下护杆具有第二容纳空间,所述第二连杆设在所述第二容纳空间内。
在本申请第三方面可选的实施例中,所述缓冲机构设在所述第二容纳空间内,且所述缓冲机构设在所述第二连杆的远离所述下护杆的端部的一侧。
在本申请第三方面可选的实施例中,所述第二容纳空间构造成当所述上护杆下降至贴合 所述下护杆上时,所述中间伸缩杆和所述连杆机构可收入所述第二容纳空间内。
在本申请第三方面可选的实施例中,所述上护杆和所述下护杆的结构相同,所述下护杆包括第一连接板和连接所述第一连接板的第二连接板,所述第二连接板和所述第一连接板之间限定出所述第二容纳空间。
在本申请第三方面可选的实施例中,所述下护杆还包括:护套,所述下护杆的长度方向的两端设有所述护套,所述第一连接板的端部、所述第二连接板的端部设在所述护套内。
下面描述本申请第四方面的升降护栏的结构。
本申请第四方面的升降护栏升降的过程中保持平行,稳定性好,安全性高,其技术特征如下:
在本申请第四方面可选的实施例中,升降护栏包括:至少两个主杆和至少三个连杆;所述主杆包括下护杆和中间伸缩杆,所述中间伸缩杆位于所述下护杆的一侧,所述中间伸缩杆为可伸缩杆且包括至少两个伸缩段,所述至少两个伸缩段包括第一伸缩段和第二伸缩段;所述连杆包括:第一下连杆、第二下连杆和第三连杆,所述第一下连杆的一端转动连接在所述下护杆上,所述第一下连杆的另一端转动连接在所述伸缩段上,所述第二下连杆的一端转动连接在所述下护杆上,所述第二下连杆的另一端转动连接在所述伸缩段上,所述第三连杆的一端转动连接在所述下护杆上,所述第三连杆的另一端转动连接在所述伸缩段上。
根据本申请实施例的升降护栏,通过设置下护杆和中间伸缩杆,并在下护杆和中间伸缩杆之间设置枢转连接的至少三个连杆,实现了下护杆和中间伸缩杆之间的升降,可以便于调整高度以适应患者。在下护杆和中间伸缩杆之间,设置第三连杆和第一下连杆均枢转连接于第一伸缩段上,第三连杆和第一下连杆的另一端同样枢转连接于下护杆上,由此形成了一个平行四边形结构,可以保证下护杆做相对于下护杆的升降时,可以保证始终与下护杆平行,从而防止中间伸缩杆升降过程中发生扭转或偏移,提升了升降护栏的安全性能。
另外,根据本申请第四方面的升降护栏,还可以具有如下附加的技术特征:
在本申请的第四方面可选的实施例中,所述主杆还包括上护杆,所述上护杆和所述下护杆位于所述中间伸缩杆的两侧;所述连杆包括:第一上连杆和第二上连杆,所述第一上连杆的一端转动连接在所述上护杆上,所述第一上连杆的另一端转动连接在所述伸缩段上,所述第二上连杆的一端转动连接在所述上护杆上,所述第二上连杆的另一端转动连接在所述伸缩段上,所述第二上连杆与所述第一上连杆连接的所述伸缩段不同。
在本申请第四方面可选的实施例中,所述第一上连杆连接在所述第一伸缩段上,所述第一下连杆的转轴和所述第一上连杆的转轴之间连接有第一啮合组件;所述第二上连杆连接在所述第二伸缩段上,所述第二下连杆的转轴和所述第二上连杆的转轴之间连接有第二啮合组件。
在本申请第四方面可选的实施例中,所述下护杆和所述上护杆的至少一个上设在朝向所述中间伸缩杆开口的容纳槽,在所述中间伸缩杆缩短至第一设定长度时,所述中间伸缩杆的至少部分位于所述容纳槽内。
在本申请第四方面可选的实施例中,所述下护杆和所述上护杆上均设有所述容纳槽,在所述中间伸缩杆缩短至所述第一设定长度时,所述中间伸缩杆的一部分位于其中一所述容纳槽内,所述中间伸缩杆的另一部分位于其中另一所述容纳槽内。
在本申请第四方面可选的实施例中,至少一个所述连杆的转轴处设有扭簧。
在本申请第四方面可选的实施例中,所述中间伸缩杆的所述伸缩段均为管段,多个所述管段沿所述中间伸缩杆的长度方向依次套设,位于内层的所述管段上连接有导向块,所述导向块用于在位于外层的所述管段内滑动。
在本申请第四方面可选的实施例中,所述升降护栏上设有至少一个锁固结构,所述锁固结构包括:锁固部和解锁部,所述锁固部用于在所述中间伸缩杆伸长至第二设定长度时进行锁固,所述解锁部用于在被触发时使所述锁固部进行解锁,所述锁固部满足以下情况中至少一个:所述锁固部用于锁固在所述主杆和所述连杆之间;所述锁固部用于锁固在所述中间伸缩杆的相邻两个所述伸缩杆之间。
在本申请第四方面可选的实施例中,所述锁固部用于锁固在所述主杆和所述连杆之间,所述锁固部包括:第一卡钩,所述第一卡钩通过旋转轴连接在所述主杆上;第二卡钩,所述第二卡钩一体形成在所述连杆上,所述第二卡钩位于所述连杆的转轴的朝向所述第一卡钩的一侧,在所述中间伸缩杆缩短至第一设定长度时所述第二卡钩脱离所述第一卡钩,在所述中间伸缩杆伸长至第二设定长度时所述第二卡钩与所述第一卡钩相配合;保持弹性件,所述保持弹性件连接在所述主杆和所述第一卡钩之间,所述保持弹性件用于在所述中间伸缩杆于第二设定长度时,驱动所述第一卡钩卡在所述第二卡钩上。
在本申请第四方面可选的实施例中,所述锁固结构为两个,两个所述锁固结构的所述第一卡钩位于同一所述主杆的两端,每个所述锁固结构的所述解锁部均为连接在所述第一卡钩上的拔片,所述主杆的两端分别设有容纳所述拔片的端槽。
下面描述本申请具有前述四方面的升降护栏的结构。
根据本申请实施例的护理床,包括根据前文中任一项所述的升降护栏。
当护理床包含前述第一方面实施例的升降护栏时,护理床的升降护栏的上护杆和中间伸缩杆能够实现联动,以实现升降护栏的收起或打开。并且,中间伸缩杆竖向上位于上护杆和下护杆之间,当升降护栏打开时,中间伸缩杆可以作为升降护栏的中间栏杆,避免上护杆和下护杆之间间距过大而无法起到防护作用。
当护理床包含前述第二方面实施例的升降护栏时,通过设有上述实施例的升降护栏,护 理床整体结构简单,操作方便,还可以避免上护杆和下护杆之间的距离过大而造成的无法防护。
当护理床包含前述第三方面实施例的升降护栏时,升降护栏可实现上下升降,其中,升降护栏的缓冲机构可将第二连杆的变速转动转化为运动末端的变速直线运动,通过变阻力件的受到速度越大阻力越大的特性可使升降护栏保持更加缓慢的下降效果,护理床的缓冲效果比较优秀,可有效避免夹伤手指的情况出现,且由于不采用摩擦缓冲的方式,因此不会产生零部件的摩擦损耗,整体的使用寿命比较长。
当护理床包含前述第四方面实施例的升降护栏时,升降护栏的下护杆和中间伸缩杆之间,设置第三连杆和第一下连杆均枢转连接于第一伸缩段上,第三连杆和第一下连杆的另一端同样枢转连接于下护杆上,由此形成了一个平行四边形结构,可以保证上护杆做相对于下护杆的升降时,始终与下护杆平行,从而防止中间伸缩杆升降过程中发生扭转或偏移,提升了护理床使用过程中的安全性能。
本申请的附加方面的优点将在下面的描述中给出,并在下面的描述中变得明显。
附图说明
本申请的上述和/或附加的方面和优点将在结合下面附图对实施例的描述变得明显和容易理解,其中:
图1为本申请第一方面实施例提供的升降护栏的结构示意图。
图2为本申请第一方面实施例提供的升降护栏的打开状态的示意图。
图3为本申请第一方面实施例提供的升降护栏的收起状态的示意图。
图4为本申请第一方面实施例中又一种升降护栏的结构示意图。
图5为图2中的V处的局部放大结构示意图。
图6为锁组件和开锁组件的结构示意图。
图7为本申请第二方面实施例的升降护栏在打开位置处的立体图。
图8为本申请第二方面实施例的升降护栏在打开位置处的主视图。
图9为本申请第二方面实施例的升降护栏在打开位置处的剖视图。
图10为图9中A区域的局部放大结构示意图。
图11为本申请第二方面实施例的升降护栏在收合位置处的立体图。
图12为本申请第二方面实施例的升降护栏在收合位置处的主视图。
图13为本申请第二方面实施例的升降护栏在收合位置处的剖视图。
图14为本申请第三方面实施例的升降护栏的结构示意图。
图15为本申请第三方面实施例的升降护栏立体结构示意图。
图16为本申请第三方面实施例的升降护栏在下降收起时的结构示意图。
图17为本申请第四方面实施例的升降护栏不具有上护杆在打开时的立体结构示意图
图18为本申请第四方面实施例的升降护栏打开时的立体结构示意图。
图19为本申请第四方面实施例的升降护栏下降时的立体结构示意图。
图20为本申请第四方面实施例的升降护栏升高时的主视图。
图21为本申请第四方面实施例的升降护栏升高时的另一角度主视图。
图22为本申请第四方面实施例的升降护栏俯视图。
图23为图22中A-A线处剖视图。
图24为图23中B处放大图。
图25为图23中C处放大图。
图26为图23中D处放大图。
图27为本申请第四方面实施例的升降护栏下降时的剖视图。
图28为本申请第四方面实施例的升降护栏侧视图。
附图标记:
升降护栏100、
上护杆10、第一容纳槽11a、
下护杆20、第二容纳槽21a、第二容纳空间201、固定座202、
第一连接板210、第二连接板220、护套230、
中间伸缩杆30、第一伸缩段31、锁孔311a、第二伸缩段32、
上升降杆20b、第一上连杆24、第二上连杆25、
下升降杆21b、第一下连杆21、第二下连杆22、
第一齿轮41a、第二齿轮61a、第三齿轮51a、第四齿轮71a、
第一同步轮62a、第二同步轮72a、柔性传动件73a、
锁体80a、锁销81a、辊轴811、第一弹簧82a、
推块83a、斜面831、推杆84a、按钮85a、第二弹簧86a、
同步组件3b、第一配合齿轮31b、第二配合齿轮32b、
锁止组件4b、刚性卡钩41b、弹性卡钩42b、解锁件43b、
缓冲件5b、防撞套管51b、第二滑块62b、
连杆机构40c、第一连杆410、第二连杆420、缓冲机构50c、
联动件510、变阻力件520、连接块5201、滚动体60c、支撑件70c、
主杆1d、连杆2d、第三连杆23、导向块3d、滑轨4d、
锁固结构5d、锁固部51d、第一卡钩511、第二卡钩512、保持弹性件513、解锁部52d。
具体实施方式
下面详细描述本申请的实施例,所述实施例的示例在附图中示出,其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的,仅用于解释本申请,而不能理解为对本申请的限制。
需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。
应注意到:相似的标号和字母在下面的附图中表示类似项,因此,一旦某一项在一个附图中被定义,则在随后的附图中不需要对其进行进一步定义和解释。
在本申请的描述中,需要理解的是,术语“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本申请和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本申请的限制。
在本申请的描述中,除非另有说明,“多个”的含义是两个或两个以上。
如图1-图28所示,本申请提供了一种升降护栏100,包括:上护杆10、下护杆20和中间伸缩杆30,其中中间伸缩杆30可升降地设在上护杆10和下护杆20之间。从而使得本申请的升降护栏100能实现高度的改变,并具有升降功能。
下面根据图1-图6描述本申请第一方面实施例的升降护栏100,可改善现有升降护栏的栏杆和升降驱动机构在收缩时依旧暴露的问题。
如图1所示,本申请第一方面实施例提供一种升降护栏100,升降护栏100包括上护杆10、下护杆20、中间伸缩杆30、第一上连杆24、第二上连杆25、第一下连杆21和第二下连杆22。中间伸缩杆30位于上护杆10和下护杆20之间,中间伸缩杆30包括可相对滑动的第一伸缩段31和第二伸缩段32。第一上连杆24的上端铰接于上护杆10,第一上连杆24的下端铰接于第一伸缩段31。第二上连杆25的上端铰接于上护杆10,第二上连杆25的下端铰接于第二伸缩段32。第一下连杆21的上端铰接于第一伸缩段31,第一下连杆21的下端铰接于下护杆20。第二下连杆22的上端铰接于第二伸缩段32,第二下连杆22的下端铰接于下护杆20。
升降护栏100具有打开状态和收起状态,如图2所示,在打开状态下,上护杆10与下护杆20之间的间距大于在收起状态下上护杆10与下护杆20之间的间距。当升降护栏100 处于打开状态时,中间伸缩杆30处于伸长状态;如图3所示,当升降护栏100处于收起状态时,中间伸缩杆30处于缩短状态。在升降护栏100处于打开状态时,中间伸缩杆30伸长,使得中间伸缩杆30能够起到中间栏杆的作用,更好的起到防护作用。在升降护栏100处于收起状态时,中间伸缩杆30处于缩短状态,以使中间伸缩杆30也能收起,能够减小整个升降护栏100在收起状态时的体积。升降护栏100在收起或打开的过程中,上护杆10始终处于水平状态。
在本实施例中,上护杆10上设有第一容纳槽11a,第一容纳槽11a的槽口朝向下护杆20,下护杆20上设有第二容纳槽21a,第二容纳槽21a的槽口朝向上护杆10。第一上连杆24的上端和第二上连杆25的上端均铰接在第一容纳槽11a内,第一下连杆21的下端和第二下连杆22的下端均铰接在第二容纳槽21a内。当升降护栏100处于收起状态时,上护杆10和下护杆20并拢,中间伸缩杆30收容在第一容纳槽11a和第二容纳槽21a内,第一上连杆24和第二上连杆25均收容在第一容纳槽11a内,第一下连杆21和第二下连杆22收容在第二容纳槽21a内,能够减小升降护栏100收起时占用的空间,还能够避免中间伸缩杆30、第一上连杆24、第二上连杆25、第二上连杆25和第二下连杆22暴露在用户可见的范围内造成不好的用户体验。
在本实施例中,当中间伸缩杆30伸长时,第一上连杆24的上端与上护杆10的铰接位置与第二上连杆25的上端与上护杆10的铰接位置之间的距离大于第一上连杆24的下端与第一伸缩段31的铰接位置与第二上连杆25的下端与第二伸缩段32的铰接位置之间的距离,第一上连杆24和第二上连杆25呈倒八字布置;第一下连杆21的上端与第一伸缩段31的铰接位置与第二下连杆22的上端与第二伸缩段32的铰接位置之间的距离小于第一下连杆21的下端与下护杆20的铰接位置与第二下连杆22的下端与下护杆20的铰接位置之间的距离,第一下连杆21和第二下连杆22呈八字布置。
为了避免因上护杆10的重力作用使得上护杆10下降过快而夹伤用户,第一上连杆24与上护杆10的铰接处、第一上连杆24与第一伸缩段31的铰接处、第二上连杆25与上护杆10的铰接处、第二上连杆25与第二伸缩段32的铰接处、第一下连杆21与第一伸缩段31的铰接处、第一下连杆21与下护杆20的铰接处、第二下连杆22与第二伸缩段32的铰接处、第二下连杆22与下护杆20的铰接处均可以通过扭簧、气弹簧、阻尼杆等具有缓冲功能的部件实现铰接。在本实施例中,铰接处采用扭簧。
在其他实施例中,如图4所示,第一上连杆24和第二上连杆25可以是呈八字布置,第一下连杆21和第二下连杆22可以是呈倒八字布置,此时,当升降护栏100处于收起状态时,中间伸缩杆30处于伸长状态,当升降护栏100处于打开状态时,中间伸缩杆30处于缩短状态。
在其他实施例中,第一上连杆24和第二上连杆25可以是交叉布置,第一下连杆21和第二下连杆22也可以是交叉布置。
当升降护栏100要收起时,在上护杆10的重力的作用下,第一上连杆24和第二上连杆25相对上护杆10转动,从而使得中间伸缩杆30的第一伸缩段31和第二伸缩段32相对移动(使得中间伸缩杆30缩短),第一伸缩段31和第二伸缩段32相对运动能够带动第一下连杆21和第二下连杆22相对下护杆20转动,第一上连杆24、第二上连杆25、第一下连杆21和第二下连杆22运动,能够带动上护杆10和中间伸缩杆30向靠近下护杆20的方向移动,即当升降护栏100在打开的过程中,第一上连杆24和第二上连杆25能够带动上护杆10向远离下护杆20的方向移动同时第一下连杆21和第二下连杆22能够带动中间伸缩杆30向远离下护杆20的方向移动即上护杆10和中间伸缩杆30能够实现联动。并且,中间伸缩杆30竖向上位于上护杆10和下护杆20之间,当升降护栏100打开时,中间伸缩杆30可以作为升降护栏100的中间栏杆,避免上护杆10和下护杆20之间间距过大而无法起到防护作用。
在本实施例中,第一伸缩段31为套杆,第二伸缩段32为滑杆,滑杆为中空结构,第二上连杆25的下端和第二下连杆22的上端均铰接于第二伸缩段32的一端部,第二伸缩段32的另一端插设于第一伸缩段31内,第一伸缩段31内靠近插口处固定有滑块,滑块是自润滑材料,例如POM(polyformaldehyde,热塑性结晶聚合物),尼龙,黄铜等,第二伸缩段32相对第一伸缩段31滑动始终与滑块接触,滑块为第一伸缩段31和第二伸缩段32之间的滑动提供润滑剂,减小第一伸缩段31和第二伸缩段32之间的摩擦,便于升降护栏100的打开或收起。
进一步地,第一上连杆24的下端与第一下连杆21的上端通过第一同步结构传动连接。第一同步结构的设置使得第一上连杆24和第一下连杆21中的一个运动即能够带动另一个运动,从而实现升降护栏100的上下同步运动,使得升降护栏100的收起或打开时,上护杆10和中间伸缩杆30的运动能够一致。
可选地,第一同步结构包括第一齿轮41a和第二齿轮61a;第一齿轮41a固定于第一上连杆24的下端,第一齿轮41a转动连接于第一伸缩段31,第二齿轮61a固定于第一下连杆21的上端,第二齿轮61a转动连接于第一伸缩段31,第一齿轮41a与第二齿轮61a外啮合,即第一上连杆24和第一下连杆21通过齿轮同步传动连接,不仅同步效果好,而且结构简单,不会额外的增大升降护栏100的结构。
在其他实施例中,第一同步结构还可以是其他结构形式,比如第一同步结构包括第一带轮、第二带轮和传动带,第一带轮固定连接于第一上连杆24的下端,第一带轮转动连接于第一伸缩段31,第二带轮固定连接于第一下连杆21的上端,第二带轮转动连接于第一伸 缩段31,传动带按照“8”字绕法绕设于第一带轮和第二带轮,使得第一上连杆24和第一下连杆21相对第一伸缩段31的转动方向相反。
进一步地,第二上连杆25的下端与第二下连杆22的上端通过第二同步结构传动连接。第一同步结构和第二同步结构的设置使得第二上连杆25和第二下连杆22中的一个运动即能够带动另一个运动,从而实现升降护栏100的上下同步运动,使得升降护栏100的收起或打开时,上护杆10和中间伸缩杆30的运动能够一致。
在本实施例中,第二同步结构包括第三齿轮51a和第四齿轮71a;第三齿轮51a固定于第二上连杆25的下端,第三齿轮51a转动连接于第二伸缩段32,第四齿轮71a固定于第二下连杆22的上端,第四齿轮71a转动连接于第二伸缩段32,第三齿轮51a与第四齿轮71a外啮合,即第二上连杆25和第二下连杆22通过齿轮同步传动连接,不仅同步效果好,而且结构简单,不会额外的增大升降护栏100的结构。
在其他实施例中,第二同步结构也可以有其他形式,其他实施例中的第二同步结构可以参照第一同步结构。
第一同步结构和第二同步结构可以相同,也可以不同。
由于护理床具有一定的长度,相应地,升降护栏100也具有一定的长度,第一下连杆21和第二下连杆22在升降护栏100的长度方向上间隔布置,那么第一下连杆21的下端和第二下连杆22的下端相对下护杆20转动则存在延迟、不同步的情况。在本实施例中,第一下连杆21的下端与第二下连杆22的下端通过第三同步结构传动连接。第三同步结构的设置能够使得第一下连杆21的下端和第二下连杆22的下端同步运动,便于升降护栏100的收起或打开,避免因第一下连杆21的下端和第二下连杆22的下端距离太远而不能同步转动的情况,并且也能减少因为转动摩擦等原因造成第一下连杆21和第二下连杆22不能同步转动的风险。
在本实施例中,第三同步结构包括第一同步轮62a、第二同步轮72a和柔性传动件73a;第一同步轮62a固定于第一下连杆21下端,第一同步轮62a转动连接于下护杆20,第二同步轮72a固定于第二下连杆22的下端,第二同步轮72a转动连接于下护杆20,柔性传动件73a以“8”字型绕法缠绕在第一同步轮62a和第二同步轮72a上。由于第一下连杆21和第二下连杆22呈八字型布置,则第一下连杆21和第二下连杆22相对下护杆20的转动方向相反,柔性传动件73a以“8”字型绕法缠绕在第一同步轮62a和第二同步轮72a上,能够保证第一同步轮62a和第二同步轮72a的转动方向相反,从而使得第一下连杆21和第二下连杆22的沿相反的方向同步转动。
柔性传动件73a可以是如传动带、传动链、钢丝绳等,在本实施例中,柔性传动件73a为钢丝绳。
由于,升降护栏100是在上护杆10的重力作用下能够收起,因此,本实施例中,如图2、图5、图6所示,中间伸缩杆30还包括锁组件和开锁组件,锁组件用于将中间伸缩杆30锁定于伸长状态,开锁组件用于解除锁组件对中间伸缩杆30的锁定。锁组件能够使得中间伸缩杆30锁定于伸长状态,以使升降护栏100能够稳定的保持在打开状态,避免在上护杆10的重力的作用下升降护栏100自动切换为收起状态。此外,开锁组件能够解除锁组件对中间伸缩杆30的锁定,便于升降护栏100收起。
在本实施例中,第一伸缩段31上设置有锁孔311a,锁组件设置在第二伸缩段32上;锁组件包括用于***锁孔311a的锁销81a,开锁组件包括推块83a和按钮85a,推块83a用于推动锁销81a移动以使锁销81a退出锁孔311a,按钮85a设置在中间伸缩杆30的一端,按钮85a用于触发推块83a动作。
锁组件还包括锁体80a,锁体80a固定连接于第二伸缩段32,锁销81a通过第一弹簧82a于锁壳连接,锁销81a能够相对锁壳移动,锁销81a的移动方向与中间伸缩杆30的伸缩方向垂直。
开锁组件包括推块83a、推杆84a和按钮85a,推杆84a穿设于中空的第二伸缩段32内,按钮85a连接于推杆84a的一端,按钮85a延伸出第二伸缩段32远离第一伸缩段31的一端,推块83a通过第二弹簧86a连接于锁体80a,用户驱动按钮85a能够通过推杆84a推动推块83a克服第二弹簧86a的弹性力动作,推杆84a和推块83a的移动方向与中间伸缩杆30的伸缩方向一致,推块83a动作能够驱动锁销81a克服第一弹簧82a的弹性力退出锁孔311a,以将第一伸缩段31和第二伸缩段32解锁,以使第一伸缩段31和第二伸缩段32能够相对运动。
推块83a上具有斜面831,锁销81a上设有抵靠于斜面831的辊轴811;推块83a移动能够使得辊轴811沿斜面831滑动,以使锁销81a将第一伸缩段31和第二伸缩段32锁定或解锁。
在本实施例中,锁孔311a设置在第一伸缩段31靠近插口的一端,当锁销81a插设于锁孔311a中,锁组件将升降护栏100锁定在最大程度的打开状态(打开到极限位置)。当升降护栏100收起到最小状态时(收起到极限位置),由于上护杆10的重力能够将升降护栏100保持在收起最小的状态,则可以不需要锁组件将第一伸缩段31和第二伸缩段32锁定,当然,为了使升降护栏100能够保持在最小的收起状态,可以在第一伸缩段31远离插口的一端设置另一锁孔311a,锁销81a***该锁孔311a时,则锁组件能够将第一伸缩段31和第二伸缩段32锁定,以使升降护栏100保持在收起状态。
在一些实施例中,沿第一伸缩段31的长度方向间隔布置多个锁孔311a,不同的锁孔311a对应中间伸缩件的伸缩长度不同,从而对应升降护栏100打开的程度不同,则上护杆10能 够位于不同的高度位置,以适应不同的应用场景。
本申请还提供一种护理床,护理床包括第一方面实施例提供的升降护栏100。
本申请护理床的升降护栏100的上护杆10和中间伸缩杆30能够实现联动,从而实现升降护栏100的收起或打开。并且,中间伸缩杆30竖向上位于上护杆10和下护杆20之间,当升降护栏100打开时,中间伸缩杆30可以作为升降护栏100的中间栏杆,避免上护杆10和下护杆20之间间距过大而无法起到防护作用。
下面根据图7-图13描述本申请第二方面实施例的升降护栏100,升降护栏100结构简单,操作方便,防护效果好。
如图7-图13所示,根据本申请实施例的升降护栏100包括上护杆10、下护杆20和中间伸缩杆30,中间伸缩杆30位于上护杆10和下护杆20之间。例如图7-图9所示,上护杆10、下护杆20和中间伸缩杆30均沿左右方向延伸,且上护杆10、下护杆20和中间伸缩杆30之间均平行,在一个示例中,下护杆20固定在医学病床上,上护杆10和中间伸缩杆30均可以相对于下护杆20在上下方向上进行升降动作。
这里需要理解的是,上护杆10、下护杆20和中间伸缩杆30还可以具有其它的结构形状,以上仅作为举例性说明,因此,本申请对上护杆10、下护杆20和中间伸缩杆30的结构形状不作限制。
进一步地,升降护栏100还包括上升降组件、下升降组件和同步组件3b,具体地,上升降组件设于上护杆10和中间伸缩杆30之间,以使得上护杆10和中间伸缩杆30相互靠近或者远离,下升降组件设于下护杆20和中间伸缩杆30之间,以使得下护杆20和中间伸缩杆30相互靠近或者远离,同步组件3b设于上升降组件和下升降组件之间,以使得上升降组件和下升降组件进行同步地升降动作。
也就是说,在上护杆10和中间伸缩杆30之间设有上升降组件,在下护杆20和中间伸缩杆30之间设有下升降组件,当上升降组件驱动上护杆10进行升降动作时,通过在上升降组件和下升降组件之间设置的同步组件3b,可以使得上升降组件和下升降组件进行同步地升降动作,以使得上护杆10和中间伸缩杆30得以同步地进行升降。当然,可以理解的是,当下升降组件驱动中间伸缩杆30进行升降动作时,根据上升降组件和下升降组件进行同步地升降动作的原理,也可以使得上护杆10和中间伸缩杆30得以同步地进行升降。
由此,上护杆10和中间伸缩杆30在上下方向上进行升降动作的过程中具有打开位置和收合位置,在收合位置时,上护杆10和中间伸缩杆30均可以与下护杆20贴合,这里的贴合可以指上护杆10、中间伸缩杆30和下护杆20中的至少一个上具有收纳槽,以使得上护杆10、中间伸缩杆30和下护杆20可以叠合收纳,例如,下护杆20上具有收纳槽,上护 杆10和中间伸缩杆30可以收纳在下护杆20的收纳槽内,从而使得上护杆10和中间伸缩杆30能够“隐形”,可以在一定程度上减少在病床上的病人的心理暗示,有助于病人的身体恢复。进一步地,贴合也可以是在上下方向上的依次叠放,也能够在一定程度上实现上护杆10和中间伸缩杆30的“隐形”,当然,上护杆10、中间伸缩杆30和下护杆20叠放的形式还可以有其它方式,这里不作限制。
由此,根据本申请实施例的升降护栏100,通过在上护杆10和中间伸缩杆30之间设有上升降组件,在下护杆20和中间伸缩杆30之间设有下升降组件,当上升降组件驱动上护杆10进行升降动作时,通过在上升降组件和下升降组件之间设置的同步组件3b,可以使得上升降组件和下升降组件进行同步地升降动作,以使得上护杆10和中间伸缩杆30得以同步地进行升降,结构简单,操作方便,还可以避免上护杆10和下护杆20之间的距离过大而造成的无法防护。
在本申请第二方面的一些实施例中,如图7-图13所示,上升降组件包括上升降杆20b,上升降杆20b的两端分别可转动地与上护杆10和中间伸缩杆30相连,下升降组件包括下升降杆21b,下升降杆21b的两端分别可转动地与下护杆20和中间伸缩杆30相连,同步组件3b包括相互啮合的第一配合齿轮31b和第二配合齿轮32b,第一配合齿轮31b设于上升降杆20b靠近中间伸缩杆30的一端,第二配合齿轮32b设于下升降杆21b靠近中间伸缩杆30的一端。由此,当上护杆10向上活动的过程中,上升降杆20b的两端可以分别相对于上护杆10和中间伸缩杆30进行转动,上升降杆20b在转动的过程中可以带动第一配合齿轮31b转动,第一配合齿轮31b转动时带动第二配合齿轮32b转动,从而使得下升降杆21b可以跟随第二配合齿轮32b发生转动,进而使得中间伸缩杆30和上护杆10同步进行升降动作。
这里需要说明的是,第一配合齿轮31b的转动中心与上升降杆20b相对于中间伸缩杆30转动的转动中心重合,第二配合齿轮32b的转动中心与下升降杆21b相对于中间伸缩杆30转动的转动中心重合。而由于第一配合齿轮31b和第二配合齿轮32b的啮合,上升降杆20b的转动方向与下升降杆21b的转动方向相反。当然,可以理解的是也可以根据生产需求或者使用需求,在第一配合齿轮31b和第二配合齿轮32b之间设置从动齿轮,以使得上升降杆20b的转动方向与下升降杆21b的转动方向相同,这里不作限制。
在本申请第二方面的一些实施例中,如图7-图13所示,中间伸缩杆30包括可相对滑动的第二伸缩段32和第一伸缩段31,上升降杆20b包括第二上连杆25和第一上连杆24,下升降杆21b包括第二下连杆22和第一下连杆21,第二上连杆25和第二下连杆22对应配合在第二伸缩段32上,第一上连杆24和第一下连杆21对应配合在第一伸缩段31上,同步组件3b设有两个,一个同步组件3b分别设于第二上连杆25和第二下连杆22之间,另 一个同步组件3b设于第一上连杆24和第一下连杆21之间。
在如图7-图13所示的一个示例中,第二上连杆25的两端分别可转动的与上护杆10的左端、中间伸缩杆30的左端转动连接,第二下连杆22的两端分别可转动地与下护杆20的左端、中间伸缩杆30的左端转动连接,在第二上连杆25与第二下连杆22相互靠近的一端上,第二上连杆25上设有第一配合齿轮31b,在第一下连杆21上设有第二配合齿轮32b,由此,在第二上连杆25进行转动,以使得上护杆10的左端进行升降动作的过程中,第二下连杆22也可以同步转动,以使得中间伸缩杆30的左端进行升降动作。
同理,第一上连杆24的两端分别可转动的与上护杆10的右端、中间伸缩杆30的右端转动连接,第一下连杆21的两端分别可转动地与下护杆20的右端、中间伸缩杆30的右端转动连接,在第一上连杆24与第一下连杆21相互靠近的一端上,第一上连杆24上设有第一配合齿轮31b,在第一下连杆21上设有第二配合齿轮32b,由此,在第一上连杆24进行转动,以使得上护杆10的右端进行升降动作的过程中,第一下连杆21也可以同步转动,以使得中间伸缩杆30的右端进行升降动作。由此,用户可以根据使用需求对上护杆10和中间伸缩杆30的两端分别进行升降动作。
进一步地,例如图7-图13所示,第二伸缩段32和第一伸缩段31可以分别形成为中空的杆体,本申请图7-图13中的示例为方形杆体,但不作为对本申请的限制。进一步地,第一伸缩段31套设在第二伸缩段32上,由此,第二伸缩段32可以收合在第一伸缩段31内。更进一步地,在第一伸缩段31的左端设有第一滑块,第二伸缩段32的外侧壁可以与第一滑块配合,在第二伸缩段32的右端设有第二滑块62b,第二滑块62b可以与第一伸缩段31的内侧壁配合,由此,通过第一滑块和第二滑块62b,可以使得第二伸缩段32和第一伸缩段31较好地进行相对滑动,从而使得中间伸缩杆30较好地进行伸缩动作。
其中,第一滑块和第二滑块62b可以选用POM、尼龙、黄铜等自润滑材料构成,滑动效果好。
更进一步地,第二伸缩段32和第一伸缩段31还可以通过滑轨滑块的配合进行相对滑动,这里不作限制。
而对于中间伸缩杆30做伸缩动作,可以使得中间伸缩杆30左端的第二上连杆25和第二下连杆22较好地相对转动,可以使得中间伸缩杆30右端的第一上连杆24和第一下连杆21较好地相对转动。
在一些示例中,在第二上连杆25与第二下连杆22相互靠近的一端上,可以在第二上连杆25的端部形成第一配合齿轮31b,在第二下连杆22的端部形成有第二配合齿轮32b,同理,可以在第一上连杆24的端部形成第一配合齿轮31b,在第一下连杆21的端部形成有第二配合齿轮32b。
可选地,如图10所示,第一配合齿轮31b朝向第二配合齿轮32b的一侧具有一部分的啮合齿,第二配合齿轮32b朝向第一配合齿轮31b的一侧具有与之配合的啮合齿,当然,第一配合齿轮31b和第二配合齿轮32b的啮合齿的布局可以根据实际需求进行其它的设置,这里不作限制。
在本申请第二方面的一些实施例中,升降护栏100还包括驱动组件(图中未示出),驱动组件设于中间伸缩杆30上,驱动组件适于驱动第二伸缩段32和第一伸缩段31朝向相互远离或者相互靠近的方向活动。由此,当需要上护杆10和中间伸缩杆30从收合位置朝向打开位置活动时,驱动组件可以驱动第二伸缩段32和第一伸缩段31朝向互相远离的方向活动,此时,中间伸缩杆30伸长,可以带动中间伸缩杆30左端的第二上连杆25和第二下连杆22较好地相对转动,以及中间伸缩杆30右端的第一上连杆24和第一下连杆21较好地相对转动,进而使得上护杆10和中间伸缩杆30活动至打开位置,同理,当需要上护杆10和中间伸缩杆30从打开位置朝向收合位置活动时,只需要通过驱动组件使得中间伸缩杆30做缩短动作即可,这里不作赘述。
进一步地,通过驱动组件控制中间伸缩杆30的伸长动作和缩短动作,还可以较好地控制中间伸缩杆30在任意地伸长位置停止,然后保持在改位置,由此,可以使得上护杆10和中间伸缩杆30在任意的高度位置处停止,进而满足对升降护栏100不同的高度需求。
更进一步地,当驱动组件控制中间伸缩杆30伸长至任意位置处时,还可以设置定位组件,以实时对中间伸缩杆30的伸长长度进行定位,这里不作限制。
在本申请的另一些实施例中,如图7-图13所示,上护杆10和中间伸缩杆30在升降方向上均具有打开位置和收合位置,升降护栏100还包括锁止组件4b,锁止组件4b适于锁止上升降组件和/或下升降组件,以使得上护杆10和中间伸缩杆30保持在打开位置或者收合位置。也就是说,上护杆10和中间伸缩杆30也可以进具有打开位置和收合位置,如图11-图13所示,当上护杆10和中间伸缩杆30均位于收合位置时,上护杆10和下护杆20在上下方向上贴合,中间伸缩杆30位于上护杆10和下护杆20的后侧,且在上下方向上,位于上护杆10和下护杆20的整体高度的中部,当上护杆10和中间伸缩杆30均位于打开位置时,锁止组件4b可以锁止上升降组件,也可以锁止下升降组件,还可以同时锁止上升降组件和下升降组件,从而使得上护杆10和中间伸缩杆30均保持在打开位置。
进一步地,锁止组件4b包括设于上升降组件朝向上护杆10一端的刚性卡钩41b,和设于上护杆10上的弹性卡钩42b,刚性卡钩41b和弹性卡钩42b的开口方向相反,且在上护杆10从收合位置朝向打开位置活动的过程中,刚性卡钩41b适于使得弹性卡钩42b发生弹性形变,弹性卡钩42b发生弹性形变后与刚性卡钩41b配合。
例如图7-图13所示,在第二上连杆25的上端形成有刚性卡钩41b,在第二上连杆25 相对于上护杆10转动的过程中,刚性卡钩41b可以围绕第二上连杆25的转动中心转动,在刚性卡钩41b转动的过程中,刚性卡钩41b可以与弹性卡钩42b的下端抵接,此时,刚性卡钩41b继续转动,可以使得弹性卡钩42b发生弹性形变,当弹性卡钩42b的弹性形变发生到一定程度时,刚性卡钩41b可以与弹性卡钩42b脱离配合,此时,刚性卡钩41b与弹性卡钩42b的开口相对,此时,如果上护杆10下降可以使得刚性卡钩41b的转动方向发生变化,即反向转动,由此,可以使得刚性卡钩41b和弹性卡钩42b卡接,从而使得上护杆10和中间伸缩杆30保持在打开位置。
同理,在第一上连杆24的上端也形成有刚性卡钩41b,在上护杆10的相对位置处形成有弹性卡钩42b,动作过程与第二上连杆25上端的刚性卡钩41b的配合过程完全一致,因此,这里不作赘述。
进一步地,锁止组件4b还包括解锁件43b,解锁件43b设于上护杆10上,解锁件43b适于使得弹性卡钩42b发生弹性形变,以使得弹性卡钩42b和刚性卡钩41b脱离配合。由此,当需要使得上护杆10和中间伸缩杆30从打开位置活动至收合位置,可以通过解锁件43b驱动弹性卡钩42b,以使得弹性卡钩42b和刚性卡钩41b脱离配合,此时,上护杆10和中间伸缩杆30可以通过自身重力进行下降,也可以通过驱动组件驱动,这里不作限制。
在本申请第二方面的一些实施例中,为防止上护杆10和中间伸缩杆30从打开位置朝向收合位置活动的过程中,或者防止上护杆10和中间伸缩杆30从打开位置朝向收合位置活动的过程中发生碰撞,或者发生夹伤,可以在上升降组件和上护杆10之间设置缓冲件5b,当然,可以理解的是,也可以在上升降组件和中间伸缩杆30之间、下升降组件和下护杆20之间、下升降组件和中间伸缩杆30之间中的至少一个上,具体地可以根据实际地需求进行设置,这里不作限制。在如图7-图13所示的示例中,缓冲件5b可以减缓的第二上连杆25、第一上连杆24、第二下连杆22和第一下连杆21的转动速度,从而减缓上护杆10和中间伸缩杆30的升降速度,可靠性高、安全性好。
进一步地,缓冲件5b可以为防撞套管51b,如图7-图13所示,在下护杆20上设置有防撞套管51b,在第二下连杆22的转动过程中,第二下连杆22的下端可以与防撞套管51b抵接,进而通过防撞套管51b减缓第二下连杆22的转动速度,当然,防撞套管51b也可以对第二下连杆22的转动角度进行限制。同理,在第一下连杆21的转动方向上,下护杆20上也设有另一个与第一下连杆21配合的防撞套管51b,通过防撞套管51b减缓第一下连杆21的转动速度,也可以对第二下连杆22的转动角度进行限制。
在本申请的一些示例中,缓冲件5b还可以是阻尼器和扭簧等,其中阻尼器或者扭簧可以设置在第二下连杆22和下护杆20的转动轴上,也可以设置在第四横杆和下护杆20的转动轴上,还可以设置在第二上连杆25和上护杆10的转动轴上,当然,在升降护栏100的 所有的转动轴上都可以设置阻尼器或者扭簧,本申请不作限制。
本申请还提出一种具有上述第二方面实施例的升降护栏100的护理床。
根据本申请第二方面实施例的护理床,通过设有上述实施例的升降护栏100,结构简单,操作方便,还可以避免上护杆10和下护杆20之间的距离过大而造成的无法防护。
下面根据图14-图16描述本申请第三方面实施例的升降护栏100,升降护栏100可将第二连杆的变速转动转化为运动末端的变速直线运动,缓冲效果比较优秀。
如图14所示,根据本申请实施例的一种升降护栏100,包括:上护杆10、下护杆20、中间伸缩杆30、连杆机构40c、缓冲机构50c。
中间伸缩杆30设在上护杆10和下护杆20之间。中间伸缩杆30的两端设有连杆机构40c,连杆机构40c包括第一连杆410和第二连杆420。
第一连杆410的一端转动连接中间伸缩杆30且另一端转动连接上护杆10,中间伸缩杆30、上护杆10、左右两侧的第一连杆410共同构成一四连杆结构,通过左侧的第一连杆410相对中间伸缩杆30的一端顺时针转动、右侧的第一连杆410相对中间伸缩杆30的另一端逆时针转动,可实现上护杆10相对中间伸缩杆30上升,反之则使上护杆10下降。
第二连杆420的一端转动连接中间伸缩杆30且另一端转动连接下护杆20,中间伸缩杆30、下护杆20、左右两侧的第二连杆420共同构成另一四连杆结构,通过左侧的第二连杆420相对中间伸缩杆30的一端逆时针转动,右侧的第二连杆420相对中间伸缩杆30的另一端顺时针转动,可实现下护杆20相对中间伸缩杆30上升,反之则使下护杆20下降。通过上述四连杆结构能够实现整个升降护栏100的升降。
第二连杆420和下护杆20之间设有缓冲机构50c,即左右两侧的第二连杆420与下护杆20之间均设置缓冲机构50c,保证两侧均衡的缓冲效果。
缓冲机构50c包括联动件510和变阻力件520。联动件510具有连接变阻力件520的运动末端(图未示出),联动件510的一端连接第二连杆420,以将第二连杆420的变速转动转化为运动末端的变速直线运动,这样就能够将第二连杆420的沿竖直方向的分力进行抵消,从而减小第二连杆420的旋转力,减轻缓冲机构50c的负荷。变阻力件520设在下护杆20上,变阻力件520构造成受到的速度越大则阻力越大,上护杆10下降时,转动第一连杆410,会给第二连杆420一个沿杆方向逐渐变大的力,从而带动变阻力件520加速压缩,由于变阻力件520的阻力与压缩速成正比,压缩速度越大则阻力就越大,因此,变阻力件520起到缓冲作用时可使升降护栏100下降的全程缓慢下降,缓冲效果更好。
根据本申请实施例的升降护栏100,通过设置缓冲机构50c可将第二连杆420的变速转动转化为运动末端的变速直线运动,通过变阻力件520的受到速度越大阻力越大的特性可 使升降护栏100保持更加缓慢下的降效果,缓冲效果比较优秀,可有效避免夹伤手指的情况出现,且由于不采用摩擦缓冲的方式,因此不会产生零部件的摩擦损耗,整体的使用寿命比较长。
一些实施例中,如图14所示,变阻力件520为阻尼器;联动件510为连接杆,连接杆的一端转动连接第二连杆420,连接杆的另一端构造成运动末端,运动末端转动连接阻尼器。也就是说,第二连杆420的旋转力转动化连接杆整体的旋转,最终输出的为运动末端的变速直线运动,然后通过阻尼器实现缓冲,这种缓冲机构50c结构简单易安装。
一些实施例中,阻尼器为液压阻尼器、气体阻尼器、电磁阻尼器中的任一种。
一些实施例中,变阻力件520还可以是其他变阻力器或变阻力功能的部件,例如,变阻力件520可以为扭簧,扭簧的一端固定在下护杆20上,另一端则与连接杆转动相连,同样可实现较好的缓冲效果。
一些实施例中,联动件510还可以为其他联动组件,例如,联动件510包括齿轮(图未示出)和齿条(图未示出),齿轮设在第二连杆420与下护杆20相连的转轴上,齿条啮合齿轮,且沿水平方向滑动设在下护杆20上,运动末端形成在齿条上,采用该方式同样可将第二连杆420的变速转动转化为变速直线运动。又例如,联动件510包括蜗轮(图未示出)和蜗杆(图未示出),蜗轮设在第二连杆420与下护杆20相连的转轴上,蜗杆设在下护杆20上且可沿水平方向移动,蜗轮啮合蜗杆,同样可将第二连杆420的变速转动转化为变速直线运动,当然该蜗轮和该蜗杆不具备自锁功能。
一些实施例中,如图14所示,升降护栏100还包括:滚动体60c和支撑件70c,滚动体60c设在连接杆的运动末端上支撑件70c设在下护杆20上,滚动体60c止抵在支撑件70c上。运动末端处通过设置滚动体60c,滚动体60c在支撑件70c上滚动,能够使运动末端获得稳定且可靠的变速直线运动。
一些实施例中,滚动体60c为滚动轴承或滚轮,支撑件70c为水平支撑板,结构简单,安装方便。当然,滚动体60c还可以是其他滚动体,这里不再赘述。
一些实施例中,如图14所示,阻尼器部分止抵在支撑件70c上,下护杆20上设有固定座202,固定座202连接阻尼器,也就是说,在支撑件70c和固定座202的共同作用下,阻尼器的安装更可靠,例如,阻尼器的左端固定在固定座202上,阻尼器的右端为固定在支撑件70c上,阻尼器的输出杆位于右端与连接杆转动相连。
一些实施例中,如图14所示,阻尼器的输出杆设有连接块5201,输出杆可通过连接块5201与连接杆转动相连,且滚动体60c可设在连接块5201上。
一些实施例中,如图15所示,上护杆10具有第一容纳空间(图未示出),第一连杆410设在第一容纳空间内,可以理解为,第一连杆410与上护杆10相连的转动端设在第一容纳 空间内,从而使第一连杆410部分隐藏在上护杆10内,不会影响升降护栏100的外形美观。下护杆20具有第二容纳空间201,第二连杆420设在第二容纳空间201内,同理,第二连杆420与下护杆20相连的转动端设在第二容纳空间201内,从而使第二连杆420部分隐藏在下护杆20内,不会影响升降护栏100的外形美观。
一些实施例中,如图14和图15所示,缓冲机构50c设在第二容纳空间201内,且缓冲机构50c设在第二连杆420的远离下护杆20的端部的一侧,采用该方式充分利用下护杆20的空间,具有体积小、布局紧凑的优点,同时也能避免影响升降护栏100的外形美观。
一些实施例中,如图16所示,第二容纳空间201构造成当上护杆10下降至贴合下护杆20上时,中间伸缩杆30和连杆机构40c可收入第二容纳空间201内,这样使得升降护栏100收起时,外形美观,占用的空间较小。
一些实施例中,如图15所示,上护杆10和下护杆20的结构相同,下护杆20包括第一连接板210和连接第一连接板210的第二连接板220,第二连接板220和第一连接板210之间限定出第二容纳空间201。
一些实施例中,如图15所示,下护杆20还包括:护套230,下护杆20的长度方向的两端设有护套230,第一连接板210的端部、第二连接板220的端部设在护套230内,护套230能够起到保护作用,避免下护杆20的左右两端划伤人手,例如,护套230可为橡胶材料制成,具有较好的保护作用。
一些实施例中,护套230上可设置有倒圆角(图未示出)。值得说明的是,中间伸缩杆30为两端可相互伸缩的管件构成,具体可参考现有技术中中间伸缩杆,这里不再赘述。
下面结合附图,描述本申请升降护栏100的第三方面的具体实施例。
如图14至图16所示,一种升降护栏100,包括:上护杆10、下护杆20、中间伸缩杆30、连杆机构40c、缓冲机构50c。
中间伸缩杆30设在上护杆10和下护杆20之间。中间伸缩杆30的两端设有连杆机构40c,连杆机构40c包括第一连杆410和第二连杆420,第一连杆410的一端转动连接中间伸缩杆30且另一端转动连接上护杆10,第二连杆420的一端转动连接中间伸缩杆30且另一端转动连接下护杆20。
第二连杆420和下护杆20之间设有缓冲机构50c,缓冲机构50c包括联动件510和变阻力件520。联动件510具有连接变阻力件520的运动末端,联动件510的一端连接第二连杆420,以将第二连杆420的变速转动转化为运动末端的变速直线运动,变阻力件520设在下护杆20上,变阻力件520构造成受到的速度越大则阻力越大。
变阻力件520为液压阻尼器;联动件510为连接杆,连接杆的一端转动连接第二连杆 420,连接杆的另一端构造成运动末端,运动末端转动连接液压阻尼器。
升降护栏100还包括:滚动体60c和支撑件70c,滚动体60c设在连接杆的运动末端上,支撑件70c设在下护杆20上,滚动体60c止抵在支撑件70c上。滚动体60c为滚动轴承,支撑件70c为水平支撑板。
液压阻尼器部分止抵在支撑件70c上,下护杆20上设有固定座202,固定座202连接液压阻尼器。阻尼器的输出杆设有连接块5201,输出杆可通过连接块5201与连接杆转动相连,且滚动体60c可设在连接块5201上。
上护杆10具有第一容纳空间,第一连杆410设在第一容纳空间内。
下护杆20具有第二容纳空间201,第二连杆420设在第二容纳空间201内。
缓冲机构50c设在第二容纳空间201内,且缓冲机构50c设在第二连杆420的远离下护杆20的端部的一侧。第二容纳空间201构造成当上护杆10下降至贴合下护杆20上时,中间伸缩杆30和连杆机构40c可收入第二容纳空间201内。
上护杆10和下护杆20的结构相同,下护杆20包括第一连接板210和连接第一连接板210的第二连接板220,第二连接板220和第一连接板210之间限定出第二容纳空间201。
下护杆20还包括:护套230,下护杆20的长度方向的两端设有护套230,第一连接板210的端部、第二连接板220的端部设在护套230内。
根据本申请实施例的一种护理床,包括前述第三方面实施例的升降护栏100。
根据本申请实施例的护理床,通过设置升降护栏100,升降护栏100可实现上下升降,其中,升降护栏100的缓冲机构50c可将第二连杆420的变速转动转化为运动末端的变速直线运动,通过变阻力件520受到速度越大阻力越大的特性可使升降护栏100保持更加缓慢的下降效果,缓冲效果比较优秀,可有效避免夹伤手指的情况出现,且由于不采用摩擦缓冲的方式,因此不会产生零部件的摩擦损耗,整体的使用寿命比较长。
下面根据图17-图28描述本申请第四方面实施例的升降护栏100,升降护栏100升降的过程中保持平行,稳定性好,安全性高。
如图17、图19、图20、图22、图26和图27所示,根据本申请第四方面实施例的一种升降护栏100,升降护栏100包括:至少两个主杆1d和至少三个连杆2d,主杆1d包括下护杆20和中间伸缩杆30,中间伸缩杆30位于下护杆20的一侧,中间伸缩杆30为可伸缩杆且包括至少两个伸缩段,至少两个伸缩段包括第一伸缩段31和第二伸缩段32。
具体的,前文所说,升降护栏100包括至少两个主杆1d,可以如图17所示,只设有两个主杆1d,即包括下护杆20和中间伸缩杆30,从而实现了升降护栏的升降。
相应的,升降护栏100包括至少两个主杆1d,可以为两个以上的主杆1d,即如图18- 图21、图23、图27和图28所示。
连杆2d包括:第一下连杆21、第二下连杆22和第三连杆23,第一下连杆21的一端转动连接在下护杆20上,第一下连杆21的另一端转动连接在第一伸缩段31上,第二下连杆22的一端转动连接在下护杆20上,第二下连杆22的另一端转动连接在第二伸缩段32上。
换言之,如图20、图21和图23所示,升降护栏100包括中间伸缩杆30,中间伸缩杆30通过至少两段伸缩段形成伸缩杆,即中间伸缩杆30可以进行伸缩调整长度。在中间伸缩杆30与下护杆20之间,通过第一下连杆21和第二下连杆22连接,并且,第一下连杆21的两端分别连接在第一伸缩段31和下护杆20的两端之间,第二下连杆22的两端分别连接在第二伸缩段1和下护杆20的两端之间。由此可以使第一下连杆21、下护杆20、第二下连杆22和中间伸缩杆30之间形成一个可以使中间伸缩杆30做相对于下护杆20升降的机构。
在本申请实施例中,伸缩段采用至少两段结构,即至少包括第一伸缩段31和第二伸缩段32。由此可以理解,如图20、图21和图23所示,第一下连杆21的一端可以连接在第一伸缩段31的一端,第一下连杆21的另一端连接在下护杆20的一端,并且第一伸缩段31连接第一下连杆21的一端与下护杆20连接第一伸缩段31的一端方向相同。
如图20、图21和图23所示,第二下连杆22的一端可以连接在第二伸缩段32的一端,第二下连杆22的另一端连接在下护杆20的另一端,并且第二伸缩段32连接第二下连杆22的一端与下护杆20连接第二伸缩段32的一端方向相同。
进一步的,如图18、图20、图21和图23所示,第三连杆23的一端转动连接在下护杆20上,第三连杆23的另一端转动连接在第一伸缩段上。
即第三连杆23的两端分别枢转连接于第一伸缩段31与下护杆20,从而可以使第三连杆23、第一伸缩段31、第一下连杆21和下护杆20之间形成一个可以转动的平行四边形结构,从而在将中间伸缩杆30的高度位置进行变化,使其可以做相对于下护杆20的升降时,通过平行四边形结构,可以保证中间伸缩杆30在升降的过程中始终与下护杆20保持相对平行的状态,不会发生偏移或扭转。进而使具有其的升降护栏100可以在升降过程中保证对使用者的稳定支撑,安全性更高。
根据本申请实施例的升降护栏100,通过设置下护杆20和中间伸缩杆30,并在下护杆20和中间伸缩杆30之间设置枢转连接的至少三个连杆2d,实现了下护杆20和中间伸缩杆30之间的升降,可以便于调整高度以适应患者。在下护杆20和中间伸缩杆30之间,设置第三连杆23和第一下连杆21均枢转连接于第一伸缩段31上,第三连杆23和第一下连杆21的另一端同样枢转连接于下护杆20上,由此形成了一个平行四边形结构,可以保证下护 杆20做相对于下护杆20的升降时,可以保证始终与下护杆20平行,从而防止中间伸缩杆30升降过程中发生扭转或偏移,提升了升降护栏100的安全性能。
进一步的,如图20和图21所示,主杆1d还包括上护杆10,上护杆10和下护杆20位于中间伸缩杆30的两侧,即中间伸缩杆30处于下护杆20和上护杆10的中间位置。
连杆2d包括:第一上连杆24和第二上连杆25,第一上连杆24的一端转动连接在上护杆10上,第一上连杆24的另一端转动连接在伸缩段上,第二上连杆25的一端转动连接在上护杆10上,第二上连杆25的另一端转动连接在伸缩段上,第二上连杆25与第一上连杆24连接的伸缩段不同。
具体的,如图20和图21所示,中间伸缩杆30包括至少两段伸缩段,连杆2d包括第二上连杆25和第一上连杆24,第一上连杆24的两端分别转动连接在上护杆10和中间伸缩杆30的一个伸缩段上,该伸缩段可以为第一伸缩段31,也可以为第二伸缩段32,或中间伸缩杆30上的其它伸缩段上。
相应的,第一上连杆24的两端分别转动连接在上护杆10和中间伸缩杆30的另一个伸缩段上,即第一上连杆24和第二上连杆25所连接的伸缩段为不同的,例如第一上连杆24可以连接于第一伸缩段31,则第二上连杆25即可以连接于第二伸缩段32。若第一上连杆24也可以连接于第二伸缩段32,则第二下连杆22即可以连接于第一伸缩段31。
由此可知,上护杆10、中间伸缩杆30、第二上连杆25和第一上连杆24依次枢转连接从而形成了一个可以升降的结构,即上护杆10可以做相对于中间伸缩杆30的升降。由前文可知,下护杆20、第一下连杆21、中间伸缩杆30和第二下连杆22依次枢转连接,形成一个可以使中间伸缩杆30做相对于下护杆20升降的结构。
进而可知,通过设计中间伸缩杆30可以相对于下护杆20升降,上护杆10可以相对于中间伸缩杆30升降,由此可以实现升降护栏100的升降,并且通过设计前文所说的平行四边形结构,可以有效的升降护栏100升降为稳定性,提升了升降护栏100升降时的安全性能。
在本申请实施例的升降护栏100中,第一上连杆24连接在第一伸缩段31上,第一下连杆21的转轴和第一上连杆24的转轴之间连接有第一啮合组件10d。
在本实施例中,如图24所示,第一上连杆24连接于第一伸缩段31上,并且第一下连杆21与第一上连杆24连接于第一伸缩段31的一端通过第一啮合组件10d连接,由此可以实现第一下连杆21和第一上连杆24同时做转动。
在本申请实施例的升降护栏100中,第二上连杆25连接在第二一伸缩段1上,第二下连杆22的转轴和第二上连杆25的转轴之间连接有第二啮合组件20d。
在本实施例中,如图25所示,第二下连杆22和第二上连杆25连接于同一伸缩段上, 在本实施例中,第二下连杆22和第二上连杆25同时连接于第二伸缩段32上,并且第二下连杆22与第二上连杆25连接于第二伸缩段32的一端通过第二啮合组件20d连接,由此可以实现第二下连杆22和第二上连杆25同时做转动
如图23和图27所示,下护杆20和上护杆10的至少一个上设在朝向中间伸缩杆30开口的容纳槽30d,在中间伸缩杆30缩短至第一设定长度时,中间伸缩杆30的至少部分位于容纳槽30d内。
具体的,中间伸缩杆30通过两个和伸缩段连接,由此可以实现伸缩,即中间伸缩杆30的长度可以调节,在下护杆20和上护杆10的至少一个上设有容纳槽30d,并且容纳槽30d朝向中间伸缩杆30开口,由此可以使中间伸缩杆30在缩短至一定长度后,储存与容纳槽30d内,即中间伸缩杆30缩短至第一设定长度时可以储存于容纳槽30d内。
其中,可以是仅在下护杆20上设有容纳槽30d,也可以是仅在上护杆10上设有容纳槽30d,还可以是在下护杆20和上护杆10上同时开设容纳槽30d,实现对缩短长度的中间伸缩杆30的容纳。
中间伸缩杆30的第一伸缩段31和第二伸缩段32可以进行伸缩,从而调节中间伸缩杆30的长度,并且,中间伸缩杆30可以进行伸缩,实现了其相对于下护杆20的高度升降,也使上护杆10可以做相对于中间伸缩杆30的升降。
由此,通过中间伸缩杆30的升降,可以在中间伸缩杆30的高度降低时,即升降护栏100高度下降时,可以通过中间伸缩杆30的缩短,并容纳于容纳槽30d内,使高度完全下降的升降护栏100,中间伸缩杆30完全收纳于容纳槽30d内,不会暴露于外部,并且使升降护栏100的外表结构更加完整。
在本申请的一个实施例中,下护杆20和上护杆10上均设有容纳槽30d,在中间伸缩杆30缩短至第一设定长度时,中间伸缩杆30的一部分位于其中一容纳槽30d内,中间伸缩杆30的另一部分位于其中另一容纳槽30d内。
如图27所示,由前文可知,中间伸缩杆30的第一伸缩段31和第二伸缩段32可以进行伸缩,从而调节中间伸缩杆30的长度,并且,中间伸缩杆30可以进行伸缩,实现了其相对于下护杆20的高度升降,也使上护杆10可以做相对于中间伸缩杆30的升降。
由此,通过中间伸缩杆30的升降,可以在中间伸缩杆30的高度降低时,即升降护栏100高度下降时,可以通过中间伸缩杆30的缩短,容纳于容纳槽30d内,使高度完全下降的升降护栏100,中间伸缩杆30完全收纳于容纳槽30d内,不会暴露于外部,并且使升降护栏100的外表结构更加完整。
并且,下护杆20和上护杆10上均开设有朝向开口朝向中间伸缩杆30的容纳槽30d,在中间伸缩杆30容纳于容纳槽30d内部,中间伸缩杆30的一部分容纳于下护杆20的容纳 槽30d内,中间伸缩杆30的另一部分容纳于上护杆10的容纳槽30d内,从而实现了中间伸缩杆30的全部被收容与容纳槽30d中,进而使升降护栏100完全降低后,中间伸缩杆30并不暴露于升降护栏100外部,保证了升降护栏100的外部整体美观性,也对中间伸缩杆30提供了保护。
在本申请的一个实施例中,至少一个连杆2d的转轴处设有扭簧40d。即可以通过在至少一个连杆2d的转轴处设置扭簧40d,对连杆2d的转动提供一定的外力,可以在升降护栏100进行高度降低时,通过扭簧40d的扭力对连杆2d提供下降过程中,连杆2d转动返岗相反的外力,使升降护栏100可以缓慢的下降,由此防止升降护栏100突然高度降低夹伤使用者手部,并且使升降护栏100缓慢下降,可以降低升降护栏100下降时,主杆1d之间接触发生的声音,给使用者更好的使用感受。
在本申请的一个实施例中,如图23所示,中间伸缩杆30的伸缩段均为管段,多个管段沿中间伸缩杆30的长度方向依次套设,位于内层的管段上连接有导向块3d,导向块3d用于在位于外层的管段内滑动。
具体的,中间伸缩杆30包括多个伸缩段,多个伸缩段局内管段,即管状结构,并且多个管状结构依次套设,从而形成了可以伸缩的中间伸缩杆30。
如图23所示,多个套设连接的管段,套设于外部的管段可以使处于其内部的管段进行滑动,具体的为处于内部的管段的端部的外周面设有滑块,通过滑块可以使处于内部的管段在套设于其外部的管段内滑动。
相应的,处于外部的管段的内壁面可以设有对应的滑槽或滑轨4d,从而可以使在其内部滑动的管段,通过滑块与滑槽或滑轨4d配合的滑动方式,实现滑动连接,从而实现中间伸缩杆30的伸缩。
如图23和图26所示,升降护栏100上设有至少一个锁固结构5d,锁固结构5d包括:锁固部51d和解锁部52d,锁固部51d用于在中间伸缩杆30伸长至第二设定长度时进行锁固,解锁部52d用于在被触发时使锁固部51d进行解锁。
具体的,锁固结构5d可以在中间伸缩杆30伸长至第二长度时进行锁固,即升降护栏100上升时,中间伸缩杆30的长度伸长,在中间伸缩杆30的长度伸长至一定长度后,会将升降护栏100上升的高度锁定,以使升降护栏100无法继续上升或下降,从而将升降护栏100稳定于当前高度,保证使用者在使用升降护栏100时,升降护栏100不会突然降低高度以使使用者发生危险。
其中,锁固结构5d包括锁固部51d和解锁部52d,锁固部51d可以对升降护栏100的高度锁定防止升降护栏100升高状态时,在对使用者进行支撑时突然降低,对使用者的安全造成隐患。解锁部52d可以在被触发时,降低升降护栏100的高度,从而实现了升降护 栏100的自动降低,并且通过解锁部52d与锁固部51d的状态,可以便于使用者确认升降护栏100升高时状态是否稳定。
进一步的,锁固部51d满足以下情况中至少一个:锁固部51d用于锁固在主杆1d和连杆2d之间,锁固部51d用于锁固在中间伸缩杆30的相邻两个伸缩杆之间。
也就是说,在本申请的一种可选实施例中,锁固部51d可以设于主杆1d和连杆2d之间,从而可以使升降护栏100升高的过程中,在连杆2d与主杆1d之间发生相对转动,并转动至一定程度后通过锁固部51d将连杆2d与主杆1d之间的转动角度锁定,从而使升降护栏100保持在当前高度。
在本申请的另一种可选实施例中,可以是锁固部51d设于中间伸缩杆30和相邻的两个伸缩杆之间,由此可以之间在中间伸缩杆30的长度调整至第二设定长度后,将中间伸缩杆30的伸缩功能锁定,即中间伸缩杆30无法继续调节伸缩长度,由此也可以保证升降护栏100稳定于当前的高度,提升升降护栏100的稳定性能。
可选的,在本申请的实施例中,锁固部51d用于锁固在主杆1d和连杆2d之间,由此可以通过将连杆2d与主杆1d之间相对转动角度锁固,从而将升降护栏100的升降高度固定住,无法,保证了升降护栏100的使用稳定性。
具体的,如图26所示,锁固部51d包括:第一卡钩511、第二卡钩512和保持弹性件513,第一卡钩511通过旋转轴连接在主杆1d上,第二卡钩512一体形成在连杆2d上,第二卡钩512位于连杆2d的转轴的朝向第一卡钩511的一侧,在中间伸缩杆30缩短至第一设定长度时第二卡钩512脱离第一卡钩511,在中间伸缩杆30伸长至第二设定长度时第二卡钩512与第一卡钩511相配合。
也就是说,锁固部51d转动设于主杆1d上,并且锁固部51d设有第一卡钩511,连杆2d转动连接与主杆1d的一端,设有第二卡钩512,第一卡钩511与第二卡钩512可以进行钩挂。
由此可以通过连杆2d做相对于主杆1d的转动时,将第一卡钩511与第二卡钩512之间钩挂后,锁固连杆2d与主杆1d之间的相对转动角度,进而使升降护栏100的高度稳定。
其中,中间伸缩杆30可以伸缩,在升降护栏100上升的过程中,中间伸缩杆30可以伸长至第二设定长度。在升降护栏100下降时,中间伸缩杆30可以缩短至第一设定长度,并完全收纳于容纳槽30d中。因此,在中间伸缩杆30伸长至第二设定长度时,也就是升降护栏100高度上升时,第一卡钩511可以与第二卡钩512之间钩挂,从而稳定升降护栏100于当前高度,保证对使用者的支撑稳定性。相应的,在中间伸缩杆30缩短至第一设定长度时,也就是升降护栏100高度下降时,第一卡钩511可以与第二卡钩512之间的钩挂脱离。
如图26所示,保持弹性件513连接在主杆1d和第一卡钩511之间,保持弹性件513 用于在中间伸缩杆30于第二设定长度时,驱动第一卡钩511卡在第二卡钩512上。通过保持弹性件513,可以使锁固部51d与主杆1d之间相对转动,并且可以使第一卡钩511恢复至与第二卡钩512钩挂的位置。由此在中间伸缩杆30的长度伸长时,保持弹性件513可以使锁固部51d做相对于第二卡钩512的转动,使中间伸缩杆30在伸长至第二设定长度时,使第一卡钩511与第二卡钩512自动的钩挂,实现升降护栏100高度上升后的自锁,保持升降护栏100的稳定性。
可选的,保持弹性件513也可以为扭簧40d,通过扭簧40d的扭力实现第一卡钩511的自动转动,即第一卡钩511可以自动的转动至与第二卡钩512钩挂的位置,实现升降护栏100上升至一定位置后,将升降护栏100的高度自动锁定。
在本申请的一个实施例中,锁固结构5d为两个,两个锁固结构5d的第一卡钩511位于同一主杆1d的两端,每个锁固结构5d的解锁部52d均为连接在第一卡钩511上的拔片,主杆1d的两端分别设有容纳拔片的端槽6d。
如图23和图26所示,在同一主杆1d的两端,均设有锁固结构5d,并且在同一主杆1d的两端设有端槽6d,锁固结构5d锁固结构5d的解锁部52d可以为拨片,当波动拨片使锁固结构5d将连杆2d与主杆1d之间解锁时,即连杆2d与主杆1d之间恢复转动时,可以将拨片容纳于端槽6d内,防止拨片凸出于主杆1d的两端,使升降护栏100的外部结构不完整,整体的外部线条不流畅。
锁固结构5d转动设于主杆1d上,并且在中间伸缩杆30伸长至第二设定长度时,锁固部51d通过保持弹性件513提供转动力,从而使第一卡钩511与连杆2d的第二卡钩512钩挂,使连杆2d与主杆1d之间的转动锁固,可以保持升降护栏100的升降高度,对使用者提供稳定的支撑。
需要对升降护栏100进行高度下降时,可以通过拨动锁固结构5d的拨片,使锁固部51d转动,即可使第一卡钩511与第二卡钩512脱离,从而可以使连杆2d与主杆1d之间恢复转动,实现升降护栏100的高度降低。
在拨动拨片时,可以使第一卡钩511与第二卡钩512之间脱离,由此升降护栏100可以恢复高度调节,而本申请实施例的升降护栏100中,拨动拨片后,升降护栏100通过其自身重力,实现自动的下降,从而实现了升降护栏100的自动下降,并且升降护栏100的连杆2d与的转轴处设有扭簧40d,可以在升降护栏100自动下降时,通过扭簧40d的扭力降低升降护栏100的自动下降速度,从而避免对使用者手部造成夹伤,也避免了由于升降护栏100下降速度过快造成主杆1d之间的碰撞产生杂音。
此外,本申请并不限于此,在本申请实施例的升降护栏100中,还设有防撞块50d,防撞块50d设于主杆1d上,并且位于连杆2d与主杆1d转动连接位置的靠近主杆1d端部的 一侧。由此可以对连杆2d的转动起到限位作用,防止连杆2d的转动角度过大。
如图24和图25所示,第一啮合组件10d和第二啮合组件20d均包括两个互相啮合的齿轮101,两个齿轮101分别连接于连个连杆2d上,由此连接于同一伸缩段的两个连杆2d之间可以通过互相啮合的齿轮101实现同步转动,相应的,在升降护栏100降低的过程中,也可以实现两个连杆2d的同步转动,从而保证升降护栏100在升降的过程中,多个主杆1d之间均保持平行位置,不会发生倾斜。
即如图22和图28所示,升降护栏100在使用时,多个主杆1d之间处于同一平面内,即多个主杆1d之间在升降过程中不会发生扭转,稳定性高。
此外,限定有“第一”、“第二”、“第三”、“第四”、“第五”的特征可以明示或者隐含地包括一个或者更多个该特征,用于区别描述特征,无顺序之分,无轻重之分。
本申请还提出一种具有上述第四方面实施例的升降护栏100的护理床。
根据本申请第四方面实施例的护理床,护理床包含前述第四方面实施例的升降护栏100,升降护栏100的下护杆20和中间伸缩杆30之间,设置第三连杆23和第一下连杆21均枢转连接于第一伸缩段31上,第三连杆23和第一下连杆24的另一端同样枢转连接于下护杆20上,由此形成了一个平行四边形结构,可以保证上护杆10做相对于下护杆20的升降时,始终与下护杆20平行,从而防止中间伸缩杆30升降过程中发生扭转或偏移,提升了护理床使用过程中的安全性能。
根据本申请实施例的升降护栏100和护理床的其他构成以及操作对于本领域普通技术人员而言都是已知的,这里不再详细描述。
在本申请的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以具体情况理解上述术语在本申请中的具体含义。

Claims (41)

  1. 一种升降护栏,其特征在于,包括:
    上护杆;
    下护杆;
    中间伸缩杆,所述中间伸缩杆可升降地设在所述上护杆和所述下护杆之间。
  2. 根据权利要求1所述的升降护栏,其特征在于,还包括:第一上连杆、第二上连杆、第一下连杆和第二下连杆;
    所述中间伸缩杆包括可相对滑动的第一伸缩段和第二伸缩段;
    所述第一上连杆的上端铰接于所述上护杆,所述第一上连杆的下端铰接于所述第一伸缩段;
    所述第二上连杆的上端铰接于所述上护杆,所述第二上连杆的下端铰接于所述第二伸缩段;
    所述第一下连杆的上端铰接于所述第一伸缩段,所述第一下连杆的下端铰接于所述下护杆;
    所述第二下连杆的上端铰接于所述第二伸缩段,所述第二下连杆的下端铰接于所述下护杆。
  3. 根据权利要求2所述的升降护栏,其特征在于,所述第一上连杆的下端与所述第一下连杆的上端通过第一同步结构传动连接。
  4. 根据权利要求3所述的升降护栏,其特征在于,所述第一同步结构包括第一齿轮和第二齿轮;
    所述第一齿轮固定于所述第一上连杆的下端,所述第二齿轮固定于所述第一下连杆的上端,所述第一齿轮与所述第二齿轮啮合。
  5. 根据权利要求2-4中任一项所述的升降护栏,其特征在于,
    所述第二上连杆的下端与所述第二下连杆的上端通过第二同步结构传动连接。
  6. 根据权利要求5所述的升降护栏,其特征在于,所述第二同步结构包括第三齿轮和第四齿轮;
    所述第三齿轮固定于所述第二上连杆的下端,所述第四齿轮固定于所述第二下连杆的上端,所述第三齿轮与所述第四齿轮啮合。
  7. 根据权利要求2-6中任一项所述的升降护栏,其特征在于,所述第一下连杆的下端与所述第二下连杆的下端通过第三同步结构传动连接。
  8. 根据权利要求7所述的升降护栏,其特征在于,所述第三同步结构包括第一同步轮、 第二同步轮和柔性传动件;
    所述第一同步轮固定于所述第一下连杆下端,所述第二同步轮固定于所述第二下连杆的下端,所述柔性传动件以“8”字型绕法缠绕在所述第一同步轮和所述第二同步轮上。
  9. 根据权利要求1-8中任一项所述的升降护栏,其特征在于,所述升降护栏具有打开状态和收起状态,在所述打开状态下,所述上护杆与所述下护杆之间的间距大于在所述收起状态下所述上护杆与所述下护杆之间的间距;
    当所述升降护栏处于打开状态时,所述中间伸缩杆处于伸长状态;
    当所述升降护栏处于收起状态时,所述中间伸缩杆处于缩短状态。
  10. 根据权利要求9所述的升降护栏,其特征在于,所述中间伸缩杆还包括锁组件和开锁组件,所述锁组件用于将所述中间伸缩杆锁定于所述伸长状态,所述开锁组件用于解除所述锁组件对所述中间伸缩杆的锁定。
  11. 根据权利要求10所述的升降护栏,其特征在于,所述第一伸缩段上设置有锁孔,所述锁组件设置在所述第二伸缩段上;
    所述锁组件包括用于***所述锁孔的锁销,所述开锁组件包括推块和按钮,所述推块用于推动所述锁销移动以使所述锁销退出所述锁孔,所述按钮设置在所述中间伸缩杆的一端,所述按钮用于触发所述推块动作。
  12. 根据权利要求9-11中任一项所述的升降护栏,其特征在于,
    所述上护杆上设有第一容纳槽,所述下护杆上设有第二容纳槽;
    当所述升降护栏处于所述收起状态时,所述上护杆和所述下护杆并拢,所述中间伸缩杆收容在所述第一容纳槽和所述第二容纳槽内,所述第一上连杆和所述第二上连杆均收容在第一容纳槽内,所述第一下连杆和所述第二下连杆收容在所述第二容纳槽内。
  13. 根据权利要求1所述的升降护栏,其特征在于,还包括:上升降组件、下升降组件和同步组件;
    所述上升降组件设于所述上护杆和所述中间伸缩杆之间,以使得所述上护杆和所述中间伸缩杆相互靠近或者远离;
    所述下升降组件设于所述下护杆和所述中间伸缩杆之间,以使得所述下护杆和所述中间伸缩杆相互靠近或者远离;
    所述同步组件设于所述上升降组件和所述下升降组件之间,以使得所述上升降组件和所述下升降组件进行同步地升降动作。
  14. 根据权利要求13所述的升降护栏,其特征在于,
    所述上升降组件包括上升降杆,所述上升降杆的两端分别可转动地与所述上护杆和中间伸缩杆相连;
    所述下升降组件包括下升降杆,所述下升降杆的两端分别可转动地与所述下护杆和中间伸缩杆相连;
    所述同步组件包括相互啮合的第一配合齿轮和第二配合齿轮,所述第一配合齿轮设于所述上升降杆靠近所述中间伸缩杆的一端,所述第二配合齿轮设于所述下升降杆靠近所述中间伸缩杆的一端。
  15. 根据权利要求14所述的升降护栏,其特征在于,
    所述中间伸缩杆包括可相对滑动的第二伸缩段和第一伸缩段,所述上升降杆包括第二上连杆和第一上连杆,所述下升降杆包括第二下连杆和第一下连杆,所述第二上连杆和所述第二下连杆对应配合在所述第二伸缩段上,所述第一上连杆和所述第一下连杆对应配合在所述第一伸缩段上,所述同步组件设有两个,一个同步组件分别设于所述第二上连杆和所述第二下连杆之间,另一个所述同步组件设于所述第一上连杆和所述第一下连杆之间。
  16. 根据权利要求15所述的升降护栏,其特征在于,还包括驱动组件,所述驱动组件设于所述中间伸缩杆上,所述驱动组件适于驱动所述第二伸缩段和所述第一伸缩段朝向相互远离或者相互靠近的方向活动。
  17. 根据权利要求13-16中任一项所述的升降护栏,其特征在于,
    所述上护杆和所述中间伸缩杆在升降方向上均具有打开位置和收合位置,所述升降护栏还包括锁止组件,所述锁止组件适于锁止上升降组件和/或下升降组件,以使得所述上护杆和所述中间伸缩杆保持在打开位置或者收合位置。
  18. 根据权利要求17所述的升降护栏,其特征在于,
    所述锁止组件包括设于所述上升降组件朝向所述上护杆一端的刚性卡钩,和设于所述上护杆上的弹性卡钩,所述刚性卡钩和所述弹性卡钩的开口方向相反,且在所述上护杆从所述收合位置朝向所述打开位置活动的过程中,所述刚性卡钩适于使得所述弹性卡钩发生弹性形变,所述弹性卡钩发生弹性形变后与所述刚性卡钩配合。
  19. 根据权利要求18所述的升降护栏,其特征在于,
    所述锁止组件还包括解锁件,所述解锁件设于所述上护杆上,所述解锁件适于使得所述弹性卡钩发生弹性形变,以使得所述弹性卡钩和所述刚性卡钩脱离配合。
  20. 根据权利要求13-19中任一项所述的升降护栏,其特征在于,还包括:缓冲件,所述缓冲件设于所述上升降组件和上护杆之间、和/或所述上升降组件和中间伸缩杆之间、和/或下升降组件和下护杆之间、和/或下升降组件和中间伸缩杆之间,所述缓冲件适于减缓所述上护杆和中间伸缩杆的升降速度。
  21. 根据权利要求20所述的升降护栏,其特征在于,所述缓冲件为防撞套管、阻尼器和扭簧中的至少一个。
  22. 根据权利要求1所述的升降护栏,其特征在于,还包括:
    连杆机构,所述中间伸缩杆的两端设有所述连杆机构,所述连杆机构包括第一连杆和第二连杆,所述第一连杆的一端转动连接所述中间伸缩杆且另一端转动连接所述上护杆,所述第二连杆的一端转动连接所述中间伸缩杆且另一端转动连接所述下护杆;
    缓冲机构,所述第二连杆和所述下护杆之间设有所述缓冲机构,所述缓冲机构包括联动件和变阻力件,所述联动件具有连接所述变阻力件的运动末端,所述联动件的一端连接所述第二连杆,以将所述第二连杆的变速转动转化为所述运动末端的变速直线运动,所述变阻力件设在所述下护杆上,所述变阻力件构造成受到的速度越大则阻力越大。
  23. 根据权利要求22所述的升降护栏,其特征在于,所述变阻力件为阻尼器;所述联动件为连接杆,所述连接杆的一端转动连接所述第二连杆,所述连接杆的另一端构造成所述运动末端,所述运动末端转动连接所述阻尼器。
  24. 根据权利要求23所述的升降护栏,其特征在于,还包括:
    滚动体,所述滚动体设在所述连接杆的所述运动末端上;
    支撑件,所述支撑件设在所述下护杆上,所述滚动体止抵在所述支撑件上。
  25. 根据权利要求24所述的升降护栏,其特征在于,所述阻尼器部分止抵在所述支撑件上,所述下护杆上设有固定座,所述固定座连接所述阻尼器。
  26. 根据权利要求22-25中任一项所述的升降护栏,其特征在于,
    所述上护杆具有第一容纳空间,所述第一连杆设在所述第一容纳空间内;
    所述下护杆具有第二容纳空间,所述第二连杆设在所述第二容纳空间内。
  27. 根据权利要求26所述的升降护栏,其特征在于,所述缓冲机构设在所述第二容纳空间内,且所述缓冲机构设在所述第二连杆的远离所述下护杆的端部的一侧。
  28. 根据权利要求26或27所述的升降护栏,其特征在于,所述第二容纳空间构造成当所述上护杆下降至贴合所述下护杆上时,所述中间伸缩杆和所述连杆机构可收入所述第二容纳空间内。
  29. 根据权利要求26-28中任一项所述的升降护栏,其特征在于,所述上护杆和所述下护杆的结构相同,所述下护杆包括第一连接板和连接所述第一连接板的第二连接板,所述第二连接板和所述第一连接板之间限定出所述第二容纳空间。
  30. 根据权利要求29所述的升降护栏,其特征在于,所述下护杆还包括:护套,所述下护杆的长度方向的两端设有所述护套,所述第一连接板的端部、所述第二连接板的端部设在所述护套内。
  31. 一种升降护栏,其特征在于,所述升降护栏包括:至少两个主杆和至少三个连杆;
    所述主杆包括下护杆和中间伸缩杆,所述中间伸缩杆位于所述下护杆的一侧,所述中间 伸缩杆为可伸缩杆且包括至少两个伸缩段,所述至少两个伸缩段包括第一伸缩段和第二伸缩段;
    所述连杆包括:第一下连杆、第二下连杆和第三连杆,所述第一下连杆的一端转动连接在所述下护杆上,所述第一下连杆的另一端转动连接在所述第一伸缩段上,所述第二下连杆的一端转动连接在所述下护杆上,所述第二下连杆的另一端转动连接在所述第二伸缩段上,所述第三连杆的一端转动连接在所述下护杆上,所述第三连杆的另一端转动连接在所述第一伸缩段上。
  32. 根据权利要求31所述的升降护栏,其特征在于,所述主杆还包括上护杆,所述上护杆和所述下护杆位于所述中间伸缩杆的两侧;
    所述连杆包括:第一上连杆和第二上连杆,所述第一上连杆的一端转动连接在所述上护杆上,所述第一上连杆的另一端转动连接在所述伸缩段上,所述第二上连杆的一端转动连接在所述上护杆上,所述第二上连杆的另一端转动连接在所述伸缩段上,所述第二上连杆与所述第一上连杆连接的所述伸缩段不同。
  33. 根据权利要求32所述的升降护栏,其特征在于,所述第一上连杆连接在所述第一伸缩段上,所述第一下连杆的转轴和所述第一上连杆的转轴之间连接有第一啮合组件;
    所述第二上连杆连接在所述第二伸缩段上,所述第二下连杆的转轴和所述第二上连杆的转轴之间连接有第二啮合组件。
  34. 根据权利要求32或33所述的升降护栏,其特征在于,所述下护杆和所述上护杆的至少一个上设在朝向所述中间伸缩杆开口的容纳槽,在所述中间伸缩杆缩短至第一设定长度时,所述中间伸缩杆的至少部分位于所述容纳槽内。
  35. 根据权利要求34所述的升降护栏,其特征在于,所述下护杆和所述上护杆上均设有所述容纳槽,在所述中间伸缩杆缩短至所述第一设定长度时,所述中间伸缩杆的一部分位于其中一所述容纳槽内,所述中间伸缩杆的另一部分位于其中另一所述容纳槽内。
  36. 根据权利要求31-35中任一项所述的升降护栏,其特征在于,至少一个所述连杆的转轴处设有扭簧。
  37. 根据权利要求31-36中任一项所述的升降护栏,其特征在于,所述中间伸缩杆的所述伸缩段均为管段,多个所述管段沿所述中间伸缩杆的长度方向依次套设,位于内层的所述管段上连接有导向块,所述导向块用于在位于外层的所述管段内滑动。
  38. 根据权利要求31-37中任一项所述的升降护栏,其特征在于,所述升降护栏上设有至少一个锁固结构,所述锁固结构包括:锁固部和解锁部,所述锁固部用于在所述中间伸缩杆伸长至第二设定长度时进行锁固,所述解锁部用于在被触发时使所述锁固部进行解锁,所述锁固部满足以下情况中至少一个:
    所述锁固部用于锁固在所述主杆和所述连杆之间;
    所述锁固部用于锁固在所述中间伸缩杆的相邻两个所述伸缩杆之间。
  39. 根据权利要求38所述的升降护栏,其特征在于所述锁固部用于锁固在所述主杆和所述连杆之间,所述锁固部包括:
    第一卡钩,所述第一卡钩通过旋转轴连接在所述主杆上;
    第二卡钩,所述第二卡钩一体形成在所述连杆上,所述第二卡钩位于所述连杆的转轴的朝向所述第一卡钩的一侧,在所述中间伸缩杆缩短至第一设定长度时所述第二卡钩脱离所述第一卡钩,在所述中间伸缩杆伸长至第二设定长度时所述第二卡钩与所述第一卡钩相配合;
    保持弹性件,所述保持弹性件连接在所述主杆和所述第一卡钩之间,所述保持弹性件用于在所述中间伸缩杆于第二设定长度时,驱动所述第一卡钩卡在所述第二卡钩上。
  40. 根据权利要求39所述的升降护栏,其特征在于,所述锁固结构为两个,两个所述锁固结构的所述第一卡钩位于同一所述主杆的两端,每个所述锁固结构的所述解锁部均为连接在所述第一卡钩上的拔片,所述主杆的两端分别设有容纳所述拔片的端槽。
  41. 一种护理床,其特征在于,包括根据权利要求1至40中任一项所述的升降护栏。
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CN209316297U (zh) * 2017-12-19 2019-08-30 孙青� 一种康复护理用升降床
CN208881878U (zh) * 2018-08-25 2019-05-21 河北天天自行车有限公司 可折叠婴儿推车
CN209629205U (zh) * 2019-02-19 2019-11-15 即墨市华信五金厂 一种可调整高度可折叠的护栏
CN111449869A (zh) * 2020-05-06 2020-07-28 广东博方众济医疗科技有限公司 一种升降护栏及护理床
CN111839941A (zh) * 2020-08-13 2020-10-30 广东博方众济医疗科技有限公司 升降护栏和具有其的护理床
CN112587336A (zh) * 2020-12-08 2021-04-02 广东博方众济医疗科技有限公司 护栏及护理床

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CN115030570A (zh) * 2022-06-17 2022-09-09 浙江大丰实业股份有限公司 弧形安全防护栏杆组件以及同步升降防护装置
CN115030570B (zh) * 2022-06-17 2024-05-31 浙江大丰实业股份有限公司 弧形安全防护栏杆组件以及同步升降防护装置
CN115300263A (zh) * 2022-08-16 2022-11-08 常州聚驰机电科技有限公司 一种采用hu6与cr1.3匹配的无线控制电动护理床及方法
CN115300263B (zh) * 2022-08-16 2023-09-15 常州聚驰机电科技有限公司 一种采用hu6与cr1.3匹配的无线控制电动护理床及方法

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