CN112386408A

CN112386408A - Seat convenient to sit

Info

Publication number: CN112386408A
Application number: CN201910765068.1A
Authority: CN
Inventors: 顾永辉; 吴昌琳; 程建军
Original assignee: Shanghai Citong Technology Co ltd
Current assignee: Shanghai Citong Technology Co ltd
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2021-02-23

Abstract

The application discloses a piece of seating furniture convenient to sit, which comprises a seating furniture frame and a seat structure, wherein the seating furniture frame comprises two frame shafts, and each frame shaft in the two frame shafts comprises a vertical part and a transverse part, wherein one ends of the vertical part and one end of the transverse part are fixedly connected together; the horizontal part is provided with a wheel set mechanism for moving the seat; the seat structure can be connected to the vertical part in a manner of rotating in the horizontal direction, the seat structure comprises a seat surface which is horizontally placed and is opposite to each other, and seat handles arranged on two sides of the seat surface, and the seat handles can be connected to the vertical part in a lifting manner; each vertical part is also provided with a rotary lifting mechanism for lifting the seat structure, the two rotary lifting mechanisms are driven by at least one driving source, and the seat structure is synchronously lifted through a synchronous mechanism. According to the seat convenient to sit, the wheel set mechanism and the seat mechanism are correspondingly arranged on the two wings of the movable seat frame, the seat mechanisms on the two wings can be opened and closed, and can be lifted synchronously through the synchronous mechanism, so that a user can conveniently sit up and down on the seat without the help of external force.

Description

Seat convenient to sit

Technical Field

The application relates to the field of nursing, especially, relate to a thing to sit on that conveniently takes.

Background

For the elderly or patients with mobility impairment, especially for the patients with lower limb mobility impairment, such as the elderly with weak lower limb or the patients who have just performed the operation, the patient may only lie on the bed, perhaps with the help of the armrests, but the movement of the elderly or patients with lower limb mobility impairment (hereinafter referred to as the user) usually needs to be accomplished with the help of a movable seat, such as a wheelchair. Wheelchairs are the most common type of seating apparatus used to assist in the movement of persons with impaired mobility of the lower extremities. When a user uses a conventional wheelchair, the user generally needs others to sit on the wheelchair, and then turns the wheels of the wheelchair by himself or moves the wheelchair by being pushed by others. However, it is very troublesome for people with weak lower limbs to sit in a wheelchair by themselves. For example, when a user needs to sit on or get off the wheelchair seat, the opening of the wheelchair seat is directed forward, and the user is generally required to hold the arm of the wheelchair for assisting the user to support the body with both feet and turn back to face the opening of the seat (when going into the wheelchair) or back to face the opening of the seat (when going into the wheelchair), and the user still needs to have considerable strength on the lower limbs of the user, and the process of turning back is very unsafe. Therefore, for people with weak lower limbs, the conventional wheelchair cannot meet the requirements of self-help transportation actions, such as getting on and off the wheelchair and moving to go to the toilet, or getting on and off the wheelchair without the assistance of others and moving.

In view of this, there is a wheelchair in which an opening direction of a seat faces rearward, the seat is detachable or unfoldable to both sides, and a support plate is provided in front of the seat. During the use, push the edge of the thing to sit (bed, chair, toilet bowl etc.) that the user belongs to with self-service wheelchair backward, the user supports both hands in order to borrow the power in the backup pad, lifts up the buttock slightly, then installs or draws in the seat below the buttock, and the user sits down and can sit on the wheelchair seat. Because the supporting plate can be used for assisting the user to ride the wheelchair, the main strength of the user is concentrated on the upper limbs, the lower limbs only need to apply small force, and the user does not need to turn, so that the convenience and the safety of the wheelchair are greatly improved. However, the self-service performance of such wheelchairs is still poor, requiring others to assist in mounting or stowing the seat. Moreover, the height of the wheelchair seat needs to be adapted to the height of the seat, and although the height can be adjusted, the height is generally adjusted before use and cannot be adjusted during use, so that the wheelchair seat is very inconvenient for a user to move among seats with different heights. For example, a user may want to get out of the way from a bed to a toilet with assistance from a wheelchair, and because the heights of the bed and toilet are often different, it is inconvenient for the user to always have a process of getting on or off the wheelchair.

Therefore, those skilled in the art have been devoted to developing seating furniture that is convenient to ride, and to solve the problem that it is inconvenient for a user to move between seating furniture of different heights.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present application is directed to a user's need to move between different heights of seating furniture, which is inconvenient.

In order to achieve the above object, the present application provides a seating furniture convenient for sitting, comprising a seating furniture frame and a seat structure, wherein the seating furniture frame comprises two frame shafts, each of the two frame shafts comprises a vertical part and a horizontal part, one end of each of the vertical part and the horizontal part is fixedly connected together;

the transverse part is provided with a wheel set mechanism for moving the seat;

the seat structure can be connected to the vertical part in a manner of rotating in the horizontal direction, the seat structure comprises a seat surface which is horizontally arranged and is opposite to each other, and seat handles (3) arranged on two sides of the seat surface (2), and the seat handles can be connected to the vertical part in a lifting manner; each vertical part is also provided with a rotary lifting mechanism for lifting the seat structure, and the two rotary lifting mechanisms synchronously lift the seat structure through a synchronizing mechanism.

Optionally, every vertical part all includes the montant of placing from top to bottom, and the rotatory grafting of top surface of montant has rotatory elevating system, and rotatory elevating system includes the lead screw, and the one end fixed mounting of chair handle has the sleeve, and the internal thread that matches with the surface screw thread of lead screw is seted up to telescopic inside wall, the lead screw is rotatory, and the drive the sleeve drives the chair handle reciprocates.

Optionally, each vertical part comprises a hollow vertical rod which is arranged up and down, a nut is fixedly installed at the top of each vertical rod, and the screw rod is screwed to the nut and enters and exits from the cavity of each vertical rod through the nut;

the surface of the vertical rod is sleeved with a sleeve, the sleeve is sleeved on the screw rod, and the upper end of the sleeve is fixedly connected to the upper end of the screw rod through a bearing;

the seat structure is horizontally rotatably connected to the sleeve.

Optionally, the synchronizing mechanism comprises a synchronizing shaft transversely connected with the two vertical rods, and two ends of the synchronizing shaft are both fixedly provided with rotating heads; the rotary lifting mechanism comprises a driving source, the driving source drives a synchronous shaft to rotate, and the synchronous shaft drives the two rotary heads to synchronously rotate.

Optionally, the synchronizing mechanism further comprises a speed reducer, and the driving source is connected with and drives the synchronizing shaft to rotate after being reduced by the speed reducer.

Optionally, the rotating head is a first bevel gear, the screw rod is fixedly connected with a second bevel gear, and the surface of the first bevel gear is meshed with the surface of the second bevel gear at a right angle to rotate in a matching manner.

Optionally, the vertical portion is further provided with at least one adjustable rear-fixed limiting block for preventing the sleeve from exceeding the stroke, and a protruding block which is lifted along with the sleeve is fixedly mounted on the surface of the sleeve.

More preferably, an upper limit block and a lower limit block are separately arranged on the vertical part, and the convex block is positioned between the two limit blocks and moves up and down.

Alternatively, the drive source is a motor and the lug includes a switch for cutting off the operating current of the motor.

Optionally, the switch includes an elastic sheet disposed on an outer surface of the protrusion, the elastic sheet is disposed facing the limiting block, and the elastic sheet touches the limiting block to cut off the working current of the motor.

Optionally, the seat structure further comprises a pair of armrests and a pair of seat backs, wherein the armrests are arranged oppositely and separately, the seat backs are arranged in the vertical direction, the front ends of the armrests are rotatably connected with the vertical parts, and the rear ends of the armrests are rotatably connected with the seat backs.

Optionally, the seat back is hingedly mounted to the armrests via a damping structure, by which the seat back may rest at any position between the armrests.

Optionally, the wheel set mechanism includes two front wheels and two rear wheels, which are symmetrically disposed, the rear wheels are close to one side of the seat structure, and the front wheels are close to one side of the upright portion.

Optionally, the front wheel is the same diameter as the rear wheel, or the diameter of the front wheel is greater than the diameter of the rear wheel.

The invention also discloses a working method of the seating facility convenient to sit, and when a user moves from a first place to a second place by using the seating facility, the working method comprises the following steps:

a. moving the seat to the upper part of the first position, and rotating to open the seat surface;

b. the chair handle is lowered through the rotary lifting mechanism until the chair surface falls on the upper surface of the first part;

c. the user moves from the first position to the chair seat;

d. moving the seat to a second place through a wheel set mechanism;

e. the chair handle is lifted through the rotary lifting mechanism until the chair surface is higher than the second position;

f. moving the seat to a position right above the seat B;

g. the chair handle is lowered through the rotary lifting mechanism until the chair surface falls on the upper surface of the second place;

h. the user moves from the seat to position b.

Optionally, step c specifically includes:

c1. lifting one hip;

c2. rotating the seat structure at the same side until the seat surface at the same side is inserted under the hip part;

c3. putting down the hip part on one side and lifting the hip part on the other side;

c4. rotating the seat structure on the other side to enable the seat surface on the other side to be plugged under the hip part on the other side;

c5. the other side of the hip is put down.

Optionally, the step h specifically includes:

h1. lifting one hip;

h2. rotating the seat structure on the same side to the seat surface on the same side to leave the hip on the same side;

h3. putting down the hip part on one side and lifting the hip part on the other side;

h4. rotating the seat structure on the other side to the seat surface on the other side to leave the hip on the other side;

h5. the other side of the hip is put down.

Technical effects

When the sitting tool convenient to sit is required to move from the first position to the second position, a user only needs to lean to the first position to sit on the first position, the sitting tool convenient to sit is moved to the user, the rotary lifting mechanism is controlled to be driven by at least one driving source, the seat mechanisms on the two wings are synchronously lifted to the first position through the synchronizing mechanism, the seat surface is horizontally rotated and opened, the user lifts one hip part through self-deflection or upper limb force exertion and the like, the seat structure is rotated to be plugged between the hip part and the first position and then plugged into the seat surface on the other side, the seat surface can be automatically transferred onto the sitting tool from the first position, then the sitting tool is moved to the position right above the second position, the user lifts the hip parts in turn after the seat surface is synchronously lifted to a height slightly higher than the second position through the rotary lifting mechanism, the seat surface on the same side is horizontally rotated and moved away from the position between the hip part and the second position, the user can sit at the second place. The utility model discloses a convenient thing to sit for the user removes to second department from first department, under the condition that does not need others' help, can be from top to bottom by oneself the thing to sit on. The user can conveniently get on and off by self to complete the desired task. Therefore, the life of the user is convenient to take care of, the self-respect and achievement feeling of the user are met, and the method has great social and economic significance.

The conception, specific structure and technical effects of the present application will be further described in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present application.

Drawings

Fig. 1 is a perspective view of a large wheel seat in the first embodiment, the second embodiment, the third embodiment and the fourth embodiment of the present application;

fig. 2 is a schematic structural diagram of a rotary lifting mechanism in the first embodiment, the third embodiment and the fourth embodiment of the present application;

fig. 3 is another schematic structural diagram of a rotary lifting mechanism in the second embodiment, the third embodiment and the fourth embodiment of the present application;

fig. 4 is a perspective view of a small wheel seat in the first embodiment, the second embodiment and the third embodiment of the present application.

In the figure: 1. a seat frame; 2. a chair surface; 3. a chair handle; 4. a synchronizing shaft; 5. a speed reducer; 6. a first bevel gear; 7. a second bevel gear; 8. a motor; 9. a screw rod; 10. a vertical rod; 11. a sleeve; 12. a bump; 13. a limiting block; 14. a handrail; 15. a chair back; 16. a rear wheel; 17. a front wheel; 18. a nut; 19. bearing 113, connecting part.

Detailed Description

The technical contents of the preferred embodiments of the present application will be more clearly and easily understood by referring to the drawings attached to the specification. The present application may be embodied in many different forms of embodiments and the scope of the present application is not limited to only the embodiments set forth herein.

In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the size and thickness of each component are not limited in the present application. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.

A piece of seating furniture convenient to sit comprises a seating furniture frame 1 and a seat structure, wherein the seating furniture frame 1 comprises two frame shafts, and each frame shaft in the two frame shafts comprises a vertical part and a transverse part, wherein one ends of the vertical part and the transverse part are fixedly connected together.

The seat structure can be connected to the vertical part in a manner of rotating in the horizontal direction, the seat structure comprises a seat surface which is horizontally arranged and is opposite to each other, and seat handles 3 arranged on two sides of the seat surface 2, and the seat handles can be connected to the vertical part in a lifting manner; each vertical part is also provided with a rotary lifting mechanism for lifting the seat structure, and the two rotary lifting mechanisms synchronously lift the seat structure through a synchronous mechanism.

Furthermore, each vertical part comprises a vertical rod 10 which is arranged up and down, the outer surface of the top of each vertical rod 10 is rotatably sleeved with a rotary lifting mechanism, as shown in fig. 2, each rotary lifting mechanism comprises a screw rod 9, a sleeve 11 is fixedly installed at one end of each chair handle 3, an internal thread matched with the surface thread of the screw rod 9 is formed in the inner side wall of each sleeve 11, the screw rods rotate, and the sleeves are driven to drive the chair handles to move up and down; through the screw-thread fit who sets up lead screw 9 and sleeve 11, can drive sleeve 11 and realize raising and lowering functions, and then have the regulation effect, simultaneously through embedding bearing 19 in L template piece, cup joint bearing 19's inner circle and lead screw 9's top fixed surface again, realize the ascending location of vertical side, also can not hinder lead screw 9's rotation.

In another embodiment of the rotary lifting mechanism, as shown in fig. 3, each vertical part comprises a hollow vertical rod 10 which is placed up and down, the top of the vertical rod 10 is fixedly provided with a nut 18, the screw rod 9 is screwed with the nut 18 and enters and exits the cavity of the vertical rod 10 through the nut 18; the surface of the vertical rod 10 is sleeved with a sleeve 11, the sleeve 11 is sleeved on the screw rod 9, and the upper end of the sleeve 11 is fixedly connected to the upper end of the screw rod 9 through a bearing 19; as shown in fig. 3, through the 18 screw-thread fit of nut that sets up lead screw 9 and montant 10 top, can drive sleeve 11 and realize raising and lowering functions, and then have the regulation effect, montant 10 fixes nut 18, lead screw 9 upwards jack-up after rotating by oneself, thereby it goes up and down to drive the fixed seat 2 of sleeve 11 surface connection, be connected the top of sleeve 11 and the lower fixed surface of L template, it is integrative, the top fixed surface of lead screw 9 cup joints and is convenient for lead screw 9 to drive sleeve 11 and go up and down together, behind lead screw 9 and the 18 screw-thread connection of nut, nut 18 is motionless, lead screw 9 goes up and down by oneself, thereby it goes up and down together to drive sleeve.

The seat structure may be directly fixed to the connection sleeve 11 and may be opened or closed by the horizontal rotation of the sleeve 11. Or more preferably, as shown in fig. 1, a connecting portion 113 extending forward is fixedly connected to a side surface of each of the sleeves 11, and the seat structure is horizontally rotatably connected to a front end of the connecting portion 113 through a handle 3, for example, by a vertical rotating shaft, so as to be opened and closed with respect to the connecting portion 113, that is, the seat structure is opened and closed with respect to the vertical portion. One benefit of providing the connecting portion 113 is that the opening range of the seat structure is relatively reduced, further ensuring the seating safety of the user.

The synchronous mechanism also comprises a synchronous shaft 4 which is transversely connected with the two vertical rods 10, and two ends of the synchronous shaft 4 are both fixedly provided with rotating heads; the rotary lifting mechanism further comprises at least one driving source, preferably a motor 8, the driving source drives the synchronous shaft 4 at least one end to rotate, and the synchronous shaft 4 drives the two rotary heads to synchronously rotate; the setting of synchronizing shaft 4 can realize the rotating head synchronous revolution at 4 both ends of synchronizing shaft, prevents that two 11 lifting motions of sleeve from appearing and leading to not having desynchrony between two seat 2, and damages the wheelchair, or cliies the problem of user's buttock to, through lazytongs, only need a driving source can realize 2 synchronous lifts of both sides seat, also practiced thrift the cost. Furthermore, through setting up lazytongs, can be with the vertical actuating lever that sets up at anterior central authorities among the prior art, separately for setting up two lead screw 9 in the vertical section to both having guaranteed that two blocks of seats 2 go up and down in step about, not occupying anterior space again, convenient to use person places the shank, improves the comfort of taking.

In addition, the two L-shaped plates are fixedly sleeved with the surfaces of the two ends of the synchronizing shaft 4, so that the synchronizing shaft 4 is vertically and fixedly connected with the screw rod 9.

Furthermore, the synchronous mechanism also comprises a speed reducer 5, and the driving source is connected with and drives the synchronous shaft 4 to rotate after being reduced by the speed reducer 5; through setting up reduction gear 5, increase torque when can realize slowing down, reduce speed, multiplicable security, increase torque, the optional less driving source of volume, the installation of being convenient for.

Further, the rotating head is a first bevel gear 6, a second bevel gear 7 is fixedly connected to the screw rod 9, and the surface of the first bevel gear 6 is meshed with the surface of the second bevel gear 7 at a right angle to rotate in a matching mode.

By means of the vertical fixed connection structure of the synchronizing shaft 4 and the screw rod 9, the first bevel gear 6 and the second bevel gear 7 can be well meshed.

Furthermore, the vertical part is also provided with at least one limit block 13 for preventing the overtravel of the sleeve 11, and the surface of the sleeve 11 is fixedly provided with a convex block 12 which is lifted along with the sleeve 11; the specific height of the limiting blocks 13 can be adjusted and fixed according to the actual situation of the place where the user is located in advance, for example, an upper limiting block 13 and a lower limiting block 13 are arranged and adjusted to the height of a bed and the height of a toilet at home respectively, and the convex block 12 moves up and down between the two limiting blocks 13.

The bump 12 is fixedly arranged on the surface of the sleeve 11, the sleeve 11 drives the bump 12 to lift together, and when the sleeve 11 reaches the maximum stroke, the limit block 13 triggers the bump 12, so that the limit measure for the stroke of the sleeve 11 is realized.

Further, the driving source is the motor 8, and the protrusion 12 includes a switch for cutting off the operating current of the motor 8, and the switch is provided to facilitate control of the motor 8.

Further, the switch comprises an elastic sheet arranged on the outer surface of the convex block 12, the elastic sheet is arranged facing the limiting block 13, and the limiting block 13 touches the elastic sheet outside the convex block 12 to cut off the working current of the switch; drive the flexure strip on the lug 12 through sleeve 11 and trigger behind stopper 13, make the switch cut off motor 8's working power supply, limit switch can be chooseed for use to the switch simultaneously, also can be through the light source of a low energy consumption of limit switch's normally open contact electric connection, and/or bee calling organ, when stopper 13 triggered limit switch, normally open contact was closed, and then the control light source circular telegram is lighted, and/or bee calling organ sound production, conveniently reminds the disease and has arrived the purpose of maximum stroke.

Further, the seat structure further includes a pair of armrests 14 facing the spaced-apart arrangement and a pair of seat backs 15 disposed in the up-down direction, the front ends of the armrests 14 are rotatably connected to the vertical portions, and the rear ends of the armrests 14 are rotatably connected to the seat backs 15.

Further, the front end of the armrest 14 includes a snap-lock structure for snap-locking the armrest 14 after the armrest 14 is rotated into position. The method specifically comprises the following steps: for example, the front end of handrail 14 sets up the block lid that can overturn from top to bottom, the card post of direction about the downside of block lid is fixed, it is just right to erect the portion card post, it has the bayonet socket to work as the handrail is rotatory to the position, and chair face 2 of both sides is just being close to the back promptly, and the user can be manual, or press through elastic construction is automatic the block lid, will the card post card is gone into the bayonet socket, thereby fixes handrail 14 can not rotate again. To prevent the armrest 14 from rotating outward to open the seat 2 during use.

In a better embodiment, the snap-lock structure can also be installed at the middle position of the handle 3, so as to prevent the user from accidentally turning up the snap cover at the front end of the armrest 14. For example, if the seat is suddenly moved forward, the user sitting on the seat 2 is likely to fall backward due to inertia, and both hands are likely to catch the front end of the armrest 14, thereby opening the snap cover, which causes danger.

Further, the chair back 15 is hinged on the armrests 14 through a damping structure, and the chair back 15 can stay at any position between the two armrests 14 through the damping structure; the damping structure is arranged, so that the chair back 15 can be stopped along with rotation, the rotation position is kept, and the problem that the chair back 15 is opened due to self rotation and is inconvenient to close is prevented.

The horizontal part is provided with a wheel set mechanism for moving the seat.

Further, the wheel set mechanism includes two front wheels 17 and two rear wheels 16 which are arranged in bilateral symmetry, the rear wheels 16 are close to one side of the seat structure, and the front wheels 17 are close to one side of the vertical portion.

Further, the diameter of the front wheel 17 is the same as that of the rear wheel 16, or the diameter of the front wheel 17 is larger than that of the rear wheel 16;

further, the front wheels 17 and the rear wheels 16 are the same in diameter, most preferably between 4-20cm in diameter, and are pushed by a U-shaped push handle at the top of the seat frame 1;

further, as shown in fig. 1, when the diameter of the front wheel 17 is larger than that of the rear wheel 16, it is most preferable that the diameter of the front wheel 17 is between 40-80cm, and the diameter of the rear wheel 16 is between 4-20cm, so that the improvement of the existing common wheelchair can be realized, the cost is saved, and the user can move himself and can move forward by holding the front wheel 17 with hands.

The diameter of the rear wheels 16 is typically small because the rear wheels 16 of the seat are typically inserted below the surface of the seat on which the user is currently sitting, for example when the user is sitting in a bed, and the rear wheels 16 are inserted under the bed to ensure that the seat 2 can be rotated under the hips of the user.

The utility model provides a convenient sitting's thing to sit on, when needs remove to second department from first department, the user only need lean on the limit to sit in first department, the thing to sit that will conveniently take removes to user's side, the rotatory elevating system of control, by the drive of at least one driving source, through the seat mechanism of synchronous lift both wings of lazytongs to first department height, the user lifts up one side buttock, rotate seat structure to seat 2 fill in between this side buttock portion and first department, fill in the seat 2 of opposite side again equally, can shift to the thing to sit on by oneself from first department, the user is steerable to remove the thing to second department afterwards, rethread rotatory elevating system goes up and down seat 2 to second department height after through lazytongs synchronous, the user lifts up both sides buttock, seat 2 with the homonymy is followed between buttock and second department, rotate and move aside, the user can sit in second department. The seat that conveniently takes for the user can remove from first to second under the condition that does not need others' help. The user can conveniently move by himself to complete the required task. Therefore, the life of the user is convenient to take care of, the self-respect and achievement feeling of the user are met, and the method has great social and economic significance.

Example one

The distinguishing technical characteristics of the embodiment are as follows: as shown in fig. 2, each vertical portion comprises a vertical rod 10 which is placed up and down, the outer surface of the top of the vertical rod 10 is rotatably sleeved with a rotary lifting mechanism, one embodiment of the rotary lifting mechanism comprises a screw rod 9, a sleeve 11 is fixedly installed at one end of the chair handle 3, an inner side wall of the sleeve 11 is provided with an inner thread which is matched with the surface thread of the screw rod 9, the screw rod 9 rotates, and the sleeve 11 is driven to drive the chair handle 3 to move up and down;

as shown in fig. 2, the screw rod 9 and the sleeve 11 are arranged in threaded fit, so that the sleeve 11 can be driven to realize a lifting function, and further an adjusting effect is achieved, meanwhile, the bearing 19 is embedded in the L-shaped plate, and then the inner ring of the bearing 19 is fixedly sleeved with the top surface of the screw rod 9, so that the positioning in the vertical direction is realized, and the rotation of the screw rod 9 cannot be hindered;

the specific complete embodiment is as follows:

The seat structure can be connected to the vertical part in a manner of rotating in the horizontal direction, the seat structure comprises a seat surface which is horizontally placed and is opposite to each other, and seat handles 3 arranged on two sides of the seat surface 2, and the seat handles 3 are connected to the vertical part in a lifting manner; each vertical part is also provided with a rotary lifting mechanism for lifting the seat structure, and the two rotary lifting mechanisms synchronously lift the seat structure through a synchronous mechanism.

Further, each vertical part comprises a vertical rod 10 which is arranged up and down, the outer surface of the top of each vertical rod 10 is rotatably sleeved with a rotary lifting mechanism, and one embodiment of the rotary lifting mechanism comprises a screw rod 9 as shown in fig. 2, a sleeve 11 is fixedly installed at one end of the chair handle 3, an inner side wall of the sleeve 11 is provided with an internal thread matched with the surface thread of the screw rod 9, the screw rod 9 rotates, and the sleeve 11 is driven to drive the chair handle 3 to move up and down; as shown in fig. 2, through the screw-thread fit who sets up lead screw 9 and sleeve 11, can drive sleeve 11 and realize raising and lowering functions, and then have the regulation effect, simultaneously through embedding bearing 19 in L type template, cup joint the inner circle of bearing 19 with the top fixed surface of lead screw 9 again, realize ascending location in vertical direction, also can not hinder the rotation of lead screw 9.

The seat structure is connected to the sleeve 11 in a horizontally rotatable manner.

Furthermore, the synchronizing mechanism comprises a synchronizing shaft 4 which is transversely connected with the two vertical rods, and two ends of the synchronizing shaft 4 are both fixedly provided with rotating heads; the rotary lifting mechanism comprises a driving source, the driving source drives the synchronous shaft 4 to rotate, and the synchronous shaft 4 drives the two rotary heads to synchronously rotate;

the setting of synchronizing shaft 4 can realize the rotating head synchronous revolution at 4 both ends of synchronizing shaft, prevents that two 11 lifting motions of sleeve from appearing and not leading to between two seat 2 asynchronous, and damage the wheelchair, or cliies the problem of user's buttock, in addition, cup joints two end fixed surface of above-mentioned two L templates and synchronizing shaft 4, realizes synchronizing shaft 4 and lead screw 9's perpendicular fixed connection.

Furthermore, the rotating head is a first bevel gear 6, a second bevel gear 7 is fixedly connected with the screw rod 9, and the surface of the first bevel gear 6 is meshed with the surface of the second bevel gear 7 at a right angle and rotates in a matching way; by means of the vertical fixed connection structure of the synchronizing shaft 4 and the screw rod 9, the first bevel gear 6 and the second bevel gear 7 can be well meshed.

Furthermore, the vertical part is also provided with at least one adjustable rear fixed limit block 13 for preventing the overtravel of the sleeve 11, and the surface of the sleeve 11 is fixedly provided with a convex block 12 which is lifted along with the sleeve 11; the bump 12 is fixedly arranged on the surface of the sleeve 11, the sleeve 11 drives the bump 12 to lift together, and when the sleeve 11 reaches the maximum stroke, the limit block 13 triggers the bump 12, so that the limit measure for the stroke of the sleeve 11 is realized.

Further, the switch comprises an elastic sheet arranged on the outer surface of the bump 12, the elastic sheet is arranged facing the limiting block 13, and the limiting block 13 touches the elastic sheet to cut off the working current of the switch; drive spacing piece on the lug 12 through sleeve 11 and trigger behind stopper 13, make the disconnected motor 8's of switch working power supply, limit switch can be chooseed for use to the switch simultaneously, does also through the normally open contact electricity of switch connects the light source of a low energy consumption, especially sets up the light source on control panel, and when stopper 13 triggered limit switch, the normally open contact was closed, and then the control light source circular telegram was lighted, conveniently reminds the purpose that the user has arrived the maximum stroke.

Further, the seat structure further comprises a pair of armrests 14 and a pair of seat backs 15, wherein the armrests 14 are arranged oppositely and separately, the seat backs 15 are arranged in the vertical direction, the front ends of the armrests 14 can be connected with the vertical portions directly in a rotating mode or through a connecting rod, and the rear ends of the armrests 14 can be connected with the seat backs 15 in a rotating mode.

The horizontal part is provided with a wheel set mechanism for moving the seat.

Further, the front wheel 17 and the rear wheel 16 have the same diameter as each other, as shown in the embodiment of fig. 4, for facilitating pushing by others, or the front wheel 17 has a diameter larger than that of the rear wheel 16, as shown in the embodiment of fig. 1, for facilitating the user to turn the front wheel 17 to advance by himself.

Further, when the rear wheels 16 and the front wheels 17 are the same diameter, most preferably between 4-20cm in diameter, they are pushed by a U-shaped push handle on the top of the seat frame 1;

Example two

The present embodiment is different from the first embodiment in technical features: as shown in fig. 3, in another embodiment of the rotary lifting mechanism, a sleeve 11 is sleeved on the surface of a vertical rod 10, the sleeve 11 is sleeved on a screw rod 9, and the upper end of the sleeve 11 is fixedly connected to the upper end of the screw rod 9 through a bearing 19;

through setting up 18 screw-thread fit at the nut at lead screw 9 and montant 10 top, can drive sleeve 11 and realize raising and lowering functions, and then have the regulation effect, montant 10 fixes nut 18, lead screw 9 upwards jack-up after rotating by oneself, thereby it goes up and down to drive the seat 2 of 11 fixed surface connections on the sleeve, be connected the top of sleeve 11 and the lower fixed surface of L template, it is integrative to form, the top fixed surface of lead screw 9 cup joints and is convenient for lead screw 9 to drive sleeve 11 and go up and down together,

lead screw

9 and 18 threaded connection of nut back, nut 18 is motionless, lead screw 9 goes up and down by oneself, thereby it goes up and down together to drive sleeve.

The specific complete embodiment is as follows: a piece of seating furniture convenient to sit comprises a seating furniture frame 1 and a seat structure, wherein the seating furniture frame 1 comprises two frame shafts, and each frame shaft in the two frame shafts comprises a vertical part and a transverse part, wherein one ends of the vertical part and the transverse part are fixedly connected together.

In the rotary lifting mechanism in this embodiment, as shown in fig. 3, each vertical portion includes a hollow vertical rod 10 disposed vertically, a nut 18 is fixedly mounted at the top of the vertical rod 10, and the lead screw 9 is screwed to the nut 18 and enters and exits the cavity of the vertical rod 10 through the nut 18; the surface of the vertical rod 10 is sleeved with a sleeve 11, the sleeve 11 is sleeved on the screw rod 9, and the upper end of the sleeve 11 is fixedly connected to the upper end of the screw rod 9 through a bearing 19; through setting up 18 screw-thread fit at the nut at lead screw 9 and montant 10 top, can drive sleeve 11 and realize raising and lowering functions, and then have the regulation effect, montant 10 fixes nut 18, lead screw 9 upwards jack-up after rotating by oneself, thereby it goes up and down to drive the seat 2 of 11 fixed surface connections on the sleeve, be connected the top of sleeve 11 and the lower fixed surface of L template, it is integrative to form, the top fixed surface of lead screw 9 cup joints and is convenient for lead screw 9 to drive sleeve 11 and go up and down together, lead screw 9 and 18 threaded connection of nut back, nut 18 is motionless, lead screw 9 goes up and down by oneself, thereby it goes up and down together to drive sleeve.

Furthermore, the synchronizing mechanism comprises a synchronizing shaft 4 which is transversely connected with the two vertical rods, and two ends of the synchronizing shaft 4 are both fixedly provided with rotating heads; the rotary lifting mechanism further comprises a driving source, the driving source drives the synchronous shaft 4 to rotate, and the synchronous shaft 4 drives the two rotary heads to synchronously rotate; the setting of synchronizing shaft 4 can realize the rotating head synchronous revolution at 4 both ends of synchronizing shaft, prevents that two 11 lifting motions of sleeve from appearing and not leading to between two seat 2 asynchronous, and damage the wheelchair, or cliies the problem of user's buttock, in addition, cup joints two end fixed surface of above-mentioned two L templates and synchronizing shaft 4, realizes synchronizing shaft 4 and lead screw 9's perpendicular fixed connection.

Further, the switch comprises an elastic sheet arranged on the outer surface of the bump 12, the elastic sheet is arranged facing the limiting block 13, and the limiting block 13 touches the elastic sheet to cut off the working current of the switch; drive the flexure strip on the lug 12 through sleeve 11 and trigger behind stopper 13, make the switch cut off motor 8's working power supply, limit switch can be chooseed for use to the switch simultaneously, also can be through the light source of a low energy consumption of limit switch's normally open contact electric connection, when stopper 13 triggered limit switch, normally open contact was closed, and then the control light source circular telegram is bright, conveniently reminds the purpose that the disease has arrived the maximum stroke.

The horizontal part is provided with a wheel set mechanism for moving the seat.

further, as shown in fig. 1, when the diameter of the front wheel 17 is larger than that of the rear wheel 16, it is most preferable that the diameter of the front wheel 17 is also included between 40-80cm, and the diameter of the rear wheel 16 is also included between 4-20cm, so that the improvement in the existing common wheelchair can be realized, the cost is saved, and meanwhile, the user can realize self-pushing and can advance by holding the front wheel 17 with hands.

EXAMPLE III

The distinguishing technical characteristics of the embodiment are as follows: as shown in fig. 4, in one embodiment of the wheel set mechanism, the front wheel 17 and the rear wheel 16 have the same diameter;

when the rear wheels 16 and the front wheels 17 are the same in diameter, most preferably between 4 and 20cm in diameter, they are pushed by a U-shaped push handle on the top of the seat frame 1;

the specific complete embodiment is as follows:

Furthermore, each vertical part comprises a vertical rod 10 which is arranged up and down, the outer surface of the top of each vertical rod 10 is rotatably sleeved with a rotary lifting mechanism, each rotary lifting mechanism comprises a lead screw 9, one end of each chair handle 3 is fixedly provided with a sleeve 11, the inner side wall of each sleeve 11 is provided with an internal thread matched with the surface thread of each lead screw 9, and the lead screws 9 rotate to drive the sleeves to drive the chair handles to move up and down;

as shown in fig. 2, through the screw-thread fit who sets up lead screw 9 and sleeve 11, can drive sleeve 11 and realize raising and lowering functions, and then have the regulation effect, simultaneously through embedding bearing 19 in L type template, cup joint the inner circle of bearing 19 with the top fixed surface of lead screw 9 again, realize ascending location in vertical direction, also can not hinder the rotation of lead screw 9.

Each vertical part comprises a hollow vertical rod 10 which is arranged up and down, the top of the vertical rod 10 is fixedly provided with a nut 18, the screw rod 9 is screwed with the nut 18 and enters and exits the cavity of the vertical rod 10 through the nut 18;

the surface of the vertical rod 10 is sleeved with a sleeve 11, the sleeve 11 is sleeved on the screw rod 9, and the upper end of the sleeve 11 is fixedly connected to the upper end of the screw rod 9 through a bearing 19;

another embodiment of rotatory elevating system, as shown in fig. 3, through setting up 18 screw-thread fit of nut at lead screw 9 and montant 10 top, can drive sleeve 11 and realize raising and lowering functions, and then have the regulation effect, montant 10 fixes nut 18, lead screw 9 upwards jack-up after rotating by oneself, thereby drive the fixed seat 2 lift of sleeve 11 surface connection, be connected the top of sleeve 11 and the lower fixed surface of L template, it is integrative, the top fixed surface of lead screw 9 cup joints and is convenient for lead screw 9 to drive sleeve 11 and go up and down together,

lead screw

9 and 18 screw-thread connection back of nut, nut 18 is motionless, lead screw 9 goes up and down by oneself, thereby it goes up and down together to drive sleeve 11.

Furthermore, the synchronizing mechanism comprises a synchronizing shaft 4 which is transversely connected with the two vertical rods, and two ends of the synchronizing shaft 4 are both fixedly provided with rotating heads; the rotary lifting mechanism also comprises a driving source, the driving source drives the synchronous shaft 4 to rotate, and the synchronous shaft 4 drives the two rotary heads to synchronously rotate automatically;

Furthermore, the synchronous mechanism also comprises a speed reducer 5, and the driving source is connected with and drives the synchronous shaft 4 to rotate after being reduced by the speed reducer 5;

through setting up reduction gear 5, increase torque when can realize slowing down, reduce speed, multiplicable security, increase torque, the optional less driving source of volume, the installation of being convenient for.

Further, the switch comprises an elastic sheet arranged on the outer surface of the bump 12, the elastic sheet is arranged facing the limiting block 13, the limiting block 13 touches the elastic sheet outside the switch, and the working current of the switch is cut off; drive the flexure strip on the lug 12 through sleeve 11 and trigger behind stopper 13, make the switch cut off motor 8's working power supply, limit switch can be chooseed for use to the switch simultaneously, also can be through the light source of a low energy consumption of limit switch's normally open contact electric connection, when stopper 13 triggered limit switch, normally open contact was closed, and then the control light source circular telegram is bright, conveniently reminds the purpose that the disease has arrived the maximum stroke.

Further, the chair back 15 is hinged on the armrests 14 through a damping structure, and the chair back 15 can stay at any position between the two armrests 14 through the damping structure;

the damping structure is arranged, so that the chair back 15 can be stopped along with rotation, the rotation position is kept, and the problem that the chair back 15 is opened due to self rotation and is inconvenient to close is prevented.

The horizontal part is provided with a wheel set mechanism for moving the seat.

Further, the front wheels 17 are the same diameter as the rear wheels 16, as shown in the embodiment of fig. 4, for assistance by others.

Further, when the rear wheels 16 are of the same diameter as the front wheels 17, most preferably between 4-20cm in diameter, they are pushed by a U-shaped push handle on top of the seat frame 1.

Example four

The present embodiment is different from the third embodiment in technical features: in another embodiment of the wheel set mechanism, as shown in fig. 1, the diameter of the front wheel 17 is larger than the diameter of the rear wheel 16, as shown in the embodiment of fig. 1, to facilitate the user to turn the front wheel 17 to advance himself.

When the diameter of the front wheel 17 is larger than that of the rear wheel 16, most preferably, the diameter range of the front wheel 17 is between 40 and 80cm, the diameter range of the rear wheel 16 is also between 4 and 20cm, the improvement in the existing common wheelchair can be realized, the cost is saved, and meanwhile, a user can realize self-movement, and the front wheel 17 can be held by hands to rotate to move forwards;

the specific complete embodiment is as follows:

As shown in fig. 2, each vertical part comprises a vertical rod 10 which is placed up and down, the outer surface of the top of each vertical rod 10 is rotatably sleeved with a rotary lifting mechanism, each rotary lifting mechanism comprises a screw rod 9, a sleeve 11 is fixedly installed at one end of each chair handle 3, the inner side wall of each sleeve 11 is provided with an internal thread matched with the surface thread of the screw rod 9, the screw rods rotate, and the sleeves are driven to drive the chair handles to move up and down;

through the screw-thread fit who sets up lead screw 9 and sleeve 11, can drive sleeve 11 and realize raising and lowering functions, and then have the regulation effect, simultaneously through embedding bearing 19 in L template piece, cup joint bearing 19's inner circle and lead screw 9's top fixed surface again, realize the ascending location of vertical side, also can not hinder lead screw 9's rotation.

in another embodiment of the rotary lifting mechanism of the invention, as shown in fig. 3, the screw rod 9 is arranged in threaded fit with the nut 18 on the top of the vertical rod 10, so that the sleeve 11 can be driven to realize a lifting function, and further, an adjusting effect is achieved, the nut 18 is fixed on the vertical rod 10, the screw rod 9 automatically rotates and then jacks up, so that the seat 2 connected and fixed on the surface of the sleeve 11 is driven to lift, the top of the sleeve 11 is fixedly connected with the lower surface of the L-shaped plate to form a whole, the outer surface of the top end of the screw rod 9 is fixedly sleeved, so that the screw rod 9 drives the sleeve 11 to lift together, after the screw rod 9 is in threaded connection with the nut 18, the nut 18 is still, and the screw.

Further, the switch comprises an elastic sheet arranged on the outer surface of the convex block 12, the elastic sheet is arranged facing the limiting block 13, and the limiting block 13 touches the elastic sheet outside the convex block 12 to cut off the working current of the switch; drive the flexure strip on the lug 12 through sleeve 11 and trigger behind stopper 13, make the switch cut off motor 8's working power supply, limit switch can be chooseed for use to the switch simultaneously, also can be through the light source of a low energy consumption of limit switch's normally open contact electric connection, when stopper 13 triggered limit switch, normally open contact was closed, and then the control light source circular telegram is bright, conveniently reminds the purpose that the disease has arrived the maximum stroke. Further, the seat structure further includes a pair of armrests 14 facing the spaced-apart arrangement and a pair of seat backs 15 disposed in the up-down direction, the front ends of the armrests 14 are rotatably connected to the vertical portions, and the rear ends of the armrests 14 are rotatably connected to the seat backs 15.

The horizontal part is provided with a wheel set mechanism for moving the seat.

Further, the diameter of the front wheel 17 is larger than the diameter of the rear wheel 16, as shown in the embodiment of fig. 1, to facilitate the user to turn the front wheel 17 to advance himself.

The foregoing detailed description of the preferred embodiments of the present application. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the concepts of the present application should be within the scope of protection defined by the claims.

Claims

1. A piece of seating furniture convenient to sit is characterized by comprising a seating furniture frame (1) and a seat structure, wherein the seating furniture frame (1) comprises two frame shafts, and each of the two frame shafts comprises a vertical part and a transverse part, wherein one ends of the vertical part and one end of the transverse part are fixedly connected together;

the transverse part is provided with a wheel set mechanism for moving the seat;

the seat structure can be connected to the vertical part in a manner of rotating, opening and closing along the horizontal direction, the seat structure comprises a seat surface (2) which is horizontally placed and is opposite to each other, and seat handles (3) arranged on two sides of the seat surface (2), and the seat handles can be connected to the vertical part in a lifting manner; each vertical part is also provided with a rotary lifting mechanism for lifting the seat structure, and the two rotary lifting mechanisms synchronously lift the seat structure through a synchronizing mechanism.

2. The sitting tool as claimed in claim 1, wherein each vertical part comprises a vertical rod (10) which is placed up and down, the outer surface of the top of the vertical rod (10) is rotatably sleeved with a rotary lifting mechanism, the rotary lifting mechanism comprises a screw rod (9), one end of the chair handle (3) is fixedly provided with a sleeve (11), the inner side wall of the sleeve (11) is provided with an internal thread which is matched with the surface thread of the screw rod (9), and the screw rod rotates to drive the sleeve to drive the chair handle to move up and down.

3. A sitting device for facilitating sitting as claimed in claim 1, wherein each vertical part comprises a hollow vertical rod (10) placed up and down, a nut (18) is fixedly mounted on the top of the vertical rod (10), the screw rod (9) is screwed on the nut (18), and the screw rod enters and exits the cavity of the vertical rod (10) through the nut (18);

a sleeve (11) is sleeved on the surface of the vertical rod (10), the sleeve (11) is sleeved on the screw rod (9), and the upper end of the sleeve (11) is fixedly connected to the upper end of the screw rod (9) through a bearing (19);

the seat structure is connected to the sleeve (11) in a horizontally rotatable manner.

4. A sitting aid as claimed in claim 2 or 3, wherein said synchronizing mechanism comprises a synchronizing shaft (4) transversely connecting two of said vertical bars (10), said synchronizing shaft (4) having a rotating head fixed to both ends thereof; the rotary lifting mechanism comprises a driving source, the driving source drives the synchronous shaft (4) to rotate, and the synchronous shaft (4) drives the two rotary heads to rotate synchronously.

5. A seat facilitating ride according to claim 4, wherein the synchronizing mechanism further comprises a speed reducer (5), and the driving source is connected to and drives the synchronizing shaft (4) to rotate after being reduced by the speed reducer (5).

6. A seating comfort according to claim 5, wherein said rotating head is a first bevel gear (6), a second bevel gear (7) is fixedly connected to said screw (9), and the surface of said first bevel gear (6) and the surface of said second bevel gear (7) are engaged at right angles and rotate in a matching manner.

7. A sitting aid as claimed in claim 4, wherein the upright portion is further provided with at least one adjustable rear fixed stop (13) for preventing overtravel of the sleeve (11), and a protrusion (12) is fixedly mounted on the surface of the sleeve (11) and ascends and descends with the sleeve (11).

8. The sitting tool as claimed in claim 7, wherein the driving source is a motor (8), the outer surface of the protrusion (12) is provided with an elastic piece facing the stopper (13), and the elastic piece touches the stopper (13) to cut off the operating current of the motor (8).

9. A seating-facilitating seat according to claim 1, wherein the seat structure further comprises a pair of armrests (14) disposed facing each other in a spaced-apart manner and a pair of seat backs (15) disposed in an up-down direction, a front end of the armrests (14) being rotatably connected to the upright portions;

the chair back (15) is rotatably arranged at the rear ends of the armrests (14) through a damping structure, and the chair back (15) can stay at any position between the two armrests (14) through the damping structure.

10. A seating-facilitating vehicle according to claim 1, wherein said wheel set mechanism comprises two front wheels (17) and two rear wheels (16) arranged bilaterally symmetrically, said rear wheels (16) being located close to said seat structure side, said front wheels (17) being located close to said upright portion side;

the diameter of the front wheel (17) is the same as the diameter of the rear wheel (16), or the diameter of the front wheel (17) is larger than the diameter of the rear wheel (16).