WO2019061559A1 - Worm drive mechanism for wheelchair - Google Patents

Worm drive mechanism for wheelchair Download PDF

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Publication number
WO2019061559A1
WO2019061559A1 PCT/CN2017/106030 CN2017106030W WO2019061559A1 WO 2019061559 A1 WO2019061559 A1 WO 2019061559A1 CN 2017106030 W CN2017106030 W CN 2017106030W WO 2019061559 A1 WO2019061559 A1 WO 2019061559A1
Authority
WO
WIPO (PCT)
Prior art keywords
tooth
adjusting
spring
shaft
drive
Prior art date
Application number
PCT/CN2017/106030
Other languages
French (fr)
Chinese (zh)
Inventor
朱剑
Original Assignee
常熟市平方轮椅有限公司
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
Application filed by 常熟市平方轮椅有限公司 filed Critical 常熟市平方轮椅有限公司
Priority to CN201780088400.4A priority Critical patent/CN110381903B/en
Publication of WO2019061559A1 publication Critical patent/WO2019061559A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
    • H02K7/1166—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion comprising worm and worm-wheel
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2203/00—General characteristics of devices
    • A61G2203/70—General characteristics of devices with special adaptations, e.g. for safety or comfort

Definitions

  • the present invention belongs to the technical field of wheelchair driving, and in particular to a worm gear mechanism for a wheelchair.
  • Wheelchairs are used as walking tools for disabled people, usually driven by electricity. It is usually difficult to close, which brings a lot of trouble to disabled people.
  • the present invention discloses a worm gear mechanism for a wheelchair which is realized by the following technical solutions.
  • a worm gear mechanism for a wheelchair comprising: a drive motor, a motor support, a ring support, a fixed plate, a drive shaft, a drive spring, a transmission gear, a spring fixed disc, an internal gear ring, Curved connecting plate, gear shaft, connecting disc, adjusting U-ring, adjusting thread wheel, adjusting handle, first adjusting tooth, spring fixing plate, compression spring, weight, first centrifugal groove, tension spring, tooth a tooth connecting plate, a second adjusting tooth, a second centrifugal groove, a second tooth groove, a first tooth groove, a connecting rod, wherein the driving motor is mounted on the fixing plate through the motor support; the transmission shaft is connected with the output shaft of the driving motor a plurality of first tooth grooves are evenly distributed on the outer circumferential surface of the drive shaft along the axial direction; the first side of the first tooth groove has a first centrifugal groove, and each of the first tooth grooves is first The centrifugal groove is connected; the first centrifugal groove is
  • the transmission gear is mounted on the other end of the gear shaft; the transmission gear meshes with the drive spring.
  • the tooth pitch angle of the second adjusting tooth is larger than the tooth tilt angle of the first adjusting tooth.
  • the above-described adjustment threaded wheel acts on the drive spring in a limited position.
  • the relative position of the adjustment screw wheel and the drive spring can be controlled by adjusting the adjustment handle before use; thereby controlling the initial elastic performance of the drive spring.
  • the first adjustment tooth in the initial state, is in the compression spring and the weight Under the joint action, the height outside the transmission shaft is smaller than the gap between the transmission gear and the driving spring, the gap between the transmission gear and the outer circumference of the transmission shaft; in the initial state, the first adjustment tooth is under the joint action of the compression spring and the weight
  • the height outside the drive shaft is smaller than the adjustment screw wheel and the drive spring engagement ⁇ , and the gap between the thread wheel and the outer circular surface of the drive shaft is adjusted.
  • the maximum height of the second adjusting tooth under the action of the tension spring and the centrifugal force is smaller than the transmission gear and the driving spring, and the transmission gear and the transmission
  • the gap between the outer circular surfaces of the shaft; under the working condition, the maximum height of the second adjusting tooth under the tension spring and the centrifugal force is smaller than the adjusting screw wheel and the driving spring, and the adjusting screw wheel and the driving shaft.
  • the wheelchair designed by the invention can convert the high rotation speed of the driving motor working raft into a lower rotation speed through the worm transmission mechanism; thereby driving the wheelchair to work; the same can be achieved by the automatic adjustment Incorrect operation of the slamming drive motor can be turned off or adjusted.
  • the transmission shaft is connected to the output shaft of the driving motor; the outer circular surface of the transmission shaft is evenly encirculated with a plurality of first tooth grooves in the axial direction; the lower side of the first tooth groove is firstly centrifuged a groove, and each of the first tooth slots is in communication with the first centrifugal groove; the first centrifugal groove passes through the center of the transmission shaft; the outer circumferential surface of the transmission shaft is evenly encirculated with a plurality of second tooth grooves in the axial direction; The second tooth groove has a second centrifugal groove, and each of the second tooth grooves communicates with the second centrifugal groove; the first tooth groove is adjacent to the adjacent second tooth groove.
  • each of the first tooth slots is exactly the same; for any one of them, the spring fixing plate is installed at one end of the first tooth groove near the axis of the transmission shaft; the first adjustment tooth is installed at the first One end of the tooth groove away from the axis of the drive shaft; one end of the connecting rod is mounted on the first adjusting tooth; the other end of the connecting rod is located in the first centrifugal groove through the spring fixing plate; the spring fixing plate and the first adjusting tooth a compression spring is installed between them; the weight is mounted on the connecting rod a lower end, and the weight is located in the first centrifugal groove; the weight and the first adjustment tooth are respectively located on two sides of the transmission shaft symmetrical; the structure of each second tooth groove is completely the same; for any one of them, The second adjusting tooth is installed at one end of the second tooth groove away from the axis of the driving shaft; the tooth connecting plate is installed at the lower end of the second adjusting tooth, and the tooth connecting plate is located in the second centrifugal groove
  • the adjustment of the threaded wheel pair drive spring is limited.
  • the relative position of the adjustment threaded wheel and the drive spring can be controlled by adjusting the adjustment handle before use; thereby controlling the initial elastic performance of the drive spring.
  • the height of the first adjusting tooth outside the driving shaft under the action of the compression spring and the weight is smaller than the gap between the transmission gear and the driving spring, and the gap between the transmission gear and the outer circular surface of the transmission shaft;
  • the first adjusting tooth has a height outside the driving shaft under the action of the compression spring and the weight is smaller than the adjusting thread wheel and the driving spring engaging ⁇ , and adjusts the gap between the thread wheel and the outer circular surface of the transmission shaft.
  • the maximum height of the second adjusting tooth under the action of the tension spring and the centrifugal force is smaller than the gap between the transmission gear and the driving spring, and the gap between the transmission gear and the outer circular surface of the transmission shaft;
  • the second adjusting tooth has a maximum height outside the driving shaft under the action of the tension spring and the centrifugal force is smaller than the adjusting thread wheel and the driving spring engaging ⁇ , and adjusts the gap between the thread wheel and the outer circular surface of the transmission shaft.
  • the wheelchair designed by the present invention is rotated by adjusting the handle before use; adjusting the U-ring by adjusting the handle; adjusting the u-ring to adjust the rotation of the threaded wheel; since the drive motor is in a stop state; In the static state; the internal gear ring cooperates with the external thread on the adjusting thread wheel; therefore, when the adjusting screw wheel rotates, the adjusting thread wheel moves along the axis of the adjusting thread wheel, that is, the adjusting screw wheel and the driving can be controlled by adjusting the adjusting handle The relative position of the spring; thereby controlling the initial elastic properties of the drive spring.
  • the torque transmitted by the drive spring will continue to decrease; when the first adjustment tooth is about to move completely to the inside of the drive shaft, the second adjustment tooth just moves out of the drive shaft;
  • the adjustment tooth and the second adjustment tooth have the least binding force to the drive spring; that is, the torque transmitted by the drive spring is minimum; and when the first adjustment tooth moves completely to the inner side of the drive shaft, the second adjustment tooth moves out of the drive shaft
  • the height of the second adjusting tooth is gradually increased to the driving spring; that is, the torque transmitted by the driving spring is also continuously increased; when the second adjusting tooth completely moves out of the driving shaft;
  • the torque transmitted by the drive spring also reaches a maximum steady state; that is, the rotational speed of the transmission gear also reaches a steady state.
  • the drive motor will work; the tire will turn; and the people will subconsciously grip the wheelchair tires; if the tires rotate torque If the shackle is large, it is possible to sprain the arm; therefore, in the present invention, by controlling the binding force of the first adjusting tooth and the second adjusting tooth to the driving spring; so that the person is gripping the tire ⁇ ; the first adjusting tooth and the second Adjusting the minimum force of the tooth to the drive spring; that is, the torque transmitted by the drive spring is the smallest; that is, the torque of the wheelchair tire is the smallest; this is when the person grips the wheelchair tire; the tire stops rotating; and after the tire stops rotating
  • the drive gear will squeeze the drive spring; the drive spring will be compressed; and when the spring is compressed to the limit ⁇ ; the drive spring will drive the drive gear to rotate again; but in the process, the motor has been adjusted or the drive motor has been turned off;
  • the transmission gear can be delayed by controlling the elasticity of the
  • the bearing capacity is suddenly increased, and the driving spring drives the turning of the transmission gear again; the same can absorb the impact of a part of the transmission gear on the transmission shaft by the elasticity of the driving spring; that is, the transmission shaft is protected; and the driving motor is protected.
  • the elastic performance of the drive spring is adjusted in an initial state. During the rotation of the adjustment thread wheel, the internal thread of the adjustment thread wheel is just rotated in mesh with the drive spring; therefore, the adjustment thread wheel does not move with the drive spring during the movement.
  • the tooth inclination angle of the second adjustment tooth is larger than the tooth inclination angle of the first adjustment tooth; that is, the second adjustment tooth moves to the outermost side of the transmission shaft, and the binding force to the drive spring is greater than
  • the first adjusting tooth has a binding force to the driving spring in an initial state; that is, the torque of the driving spring initial driving transmission gear is smaller than the torque of driving the spring driving transmission gear after the transmission gear is stabilized.
  • the weight since the weight is mounted as a whole on the transmission shaft and mounted on the lower side of the connecting rod; therefore, when the weight moves, the weight will drive all the connecting rods to move together; that is, drive all the first adjusting teeth The teeth move together; therefore, the binding force of all the first adjustment teeth on the drive shaft to the drive spring is synchronously changed; that is, the drive spring transmits the torque ⁇ , and the portion of the drive spring that acts on the transmission gear passes through the transmission gear as a whole.
  • the pressing force on the driving spring during the rotation; the driving spring is protected; in the present invention, since the tooth connecting plate is connected with all the first adjusting teeth on the transmission shaft; therefore, all the parts on the transmission shaft under centrifugal action
  • the second adjusting tooth will move together; that is, the binding force of the second adjusting tooth on the driving shaft to the driving spring is synchronously changed; that is, the driving spring transmits the torque ⁇ , and the part of the driving spring that acts on the transmission gear passes through the whole to bear the transmission.
  • the pressing force of the gear on the drive spring during the rotation; the drive spring is protected.
  • the wheelchair designed by the present invention is rotated by adjusting the handle before use; the U-ring is rotated by adjusting the handle; the U-ring is adjusted to adjust the rotation of the threaded wheel; since the drive motor is in a stop state; In the static state; the internal gear ring cooperates with the external thread on the adjusting thread wheel; therefore, when the adjusting screw wheel rotates, the adjusting thread wheel moves along the axis of the adjusting thread wheel, that is, the adjusting screw wheel and the driving can be controlled by adjusting the adjusting handle The relative position of the spring; thereby controlling the initial elastic properties of the drive spring.
  • the maximum torque that can be transmitted by the drive spring is controlled; the initial elastic performance of the thread is adjusted; the control drive motor starts to work; the drive motor drives the drive shaft to rotate; the drive shaft drives the two spring fixed discs to rotate; The fixed disc drives the drive spring to rotate; The rotation of the spring drives the transmission gear to rotate; the transmission gear drives the gear shaft to rotate; the rotation force can be transmitted to the tire of the wheelchair through the gear shaft; and the wheelchair is driven by the rotation of the tire.
  • FIG. 1 is a schematic view showing the mounting of an integral part.
  • FIG. 2 is a schematic view showing the internal structure of an integral part.
  • FIG. 3 is a schematic view showing the internal structure of the integral component.
  • FIG. 4 is a schematic view showing the internal structure distribution of the entire component.
  • FIG. 5 is a schematic cross-sectional view showing the internal structure of the entire component.
  • FIG. 6 is a schematic view showing the structure of an internal ring gear.
  • FIG. 7 is a schematic view showing the structure of the adjusting screw wheel.
  • FIG. 8 is a schematic view showing the installation of a transmission gear.
  • FIG. 9 is a schematic view of the cooperation of the transmission gear and the drive spring.
  • FIG. 10 is a schematic view of the mounting of the drive spring.
  • FIG. 11 is a schematic view showing the installation of the first adjustment tooth.
  • FIG. 12 is a schematic view of the second adjustment tooth installation.
  • Figure 13 is a schematic view showing the distribution of the second centrifugal tank.
  • FIG. 14 is a schematic view showing the distribution of the first centrifugal tank.
  • 15 is a schematic structural view of a transmission shaft.
  • FIG. 16 is a schematic view showing the distribution of the first adjustment tooth.
  • 17 is a schematic view showing the structure of a first adjustment tooth.
  • FIG. 18 is a schematic view showing the distribution of the second adjustment tooth.
  • FIG. 19 is a schematic view showing the structure of a second adjustment tooth.
  • FIG. 20 is a schematic view showing the working principle of the first adjustment tooth and the second adjustment tooth.
  • 21 is a schematic diagram showing changes in the rotational speed of a gear shaft.
  • the label name 1, the drive motor; 2, the motor support; 3, the ring support; 4, the fixed plate; 5, the drive shaft; 6, the drive spring; 7, the transmission gear; 8, the spring fixed disc 9, internal gear ring; 10, curved connecting plate; 11, gear shaft; 12, connecting disc; 13, adjusting U-ring; 14, adjusting thread wheel; Adjusting the handle; 16, the first adjusting tooth; 17, the spring fixing plate; 18, the compression spring; 19, the weight; 20, the first centrifugal groove; 21, the tension spring; 22, the tooth connecting plate; The second adjusting tooth; 24, the second centrifugal groove; 25, the second tooth groove; 26, the first tooth groove; 27, the connecting rod.
  • FIG. 1 and 2 it comprises a driving motor 1, a motor support 2, a ring gear support 3, a fixing plate 4, a transmission shaft 5, a driving spring 6, a transmission gear 7, a spring fixing disc 8, an internal gear ring 9, Curved connecting plate 10, gear shaft 11, connecting disc 12, adjusting U-ring 13, adjusting thread wheel 14, adjusting handle 15, first adjusting tooth 16, spring fixing plate 17, compression spring 18, weight 19, a first centrifugal groove 20, a tension spring 21, a tooth connecting plate 22, a second adjusting tooth 23, a second centrifugal groove 24, a second tooth groove 25, a first tooth groove 26, and a connecting rod 27, wherein As shown in Fig. 1, the drive motor 1 is mounted on the fixed plate 4 via the motor support 2; as shown in Fig.
  • the drive shaft 5 is coupled to the output shaft of the drive motor 1; as shown in Fig. 14, the outer circumference of the drive shaft 5
  • a plurality of first tooth grooves 26 are evenly distributed along the axial direction; a lower side of the first tooth groove 26 has a first centrifugal groove 20, and each of the first tooth grooves 26 communicates with the first centrifugal groove 20.
  • the first centrifugal groove 20 passes through the center of the transmission shaft 5; as shown in Fig.
  • the outer circumferential surface of the transmission shaft 5 is along the axial direction
  • the mantle has a plurality of second tooth grooves 25; the lower side of the second tooth groove 25 has a second centrifugal groove 24, and each of the second tooth grooves 25 communicates with the second centrifugal groove 24; It is shown that the first tooth groove 26 and the adjacent second tooth groove 25 form an angle of ninety degrees; the structure of each of the first tooth grooves 26 is exactly the same; for any one of them, as shown in FIG.
  • the spring retaining plate 17 is mounted in one end of the first tooth groove 26 near the axis of the drive shaft 5; the first adjusting tooth 16 is mounted at one end of the first tooth groove 26 away from the axis of the drive shaft 5;
  • one end of the connecting rod 27 is mounted on the first adjusting tooth 16; the other end of the connecting rod 27 is located in the first centrifugal groove 20 through the spring fixing plate 17; the spring fixing plate 17 and the first adjusting tooth 16
  • a compression spring 18 is mounted therebetween; as shown in Fig.
  • the weight 19 is mounted at the lower end of the connecting rod 27, and the weight 19 is located in the first centrifugal groove 20; the weight 19 and the first adjusting tooth 16 are respectively located in the transmission
  • the two sides of the shaft 5 are symmetrical to each other; as shown in FIG. 12, the structure installed in each of the second tooth grooves 25 is identical;
  • the second adjusting tooth 23 is mounted at one end of the second tooth groove 25 away from the axis of the drive shaft 5; as shown in FIG. 18, the tooth connecting plate 22 is mounted on the second adjusting tooth.
  • the lower end of the 23, and the tooth connecting plate 22 is located in the second centrifugal groove 24; a plurality of tension springs 21 are evenly mounted between the tooth connecting plate 22 and the second centrifugal groove 24; as shown in Fig. 4, the transmission A spring fixing disc 8 is respectively mounted on both ends of the shaft 5, and two spring fixing discs 8 are respectively located on two sides of the first adjusting tooth 16 and the second adjusting tooth 23; as shown in FIG.
  • the two ends of the spring 6 are respectively mounted on the two spring fixing discs 8, as shown in Fig. 9, and the driving spring 6 is nested on the transmission shaft 5; the driving springs 6 are respectively adjusted with the first adjustment mounted on the transmission shaft 5
  • the tooth 16 and the second adjusting tooth 23 are matched; as shown in FIG.
  • the outer surface of the adjusting thread wheel 14 has an external thread; the inner circular surface of the adjusting thread wheel 14 has an internal thread; the adjusting thread wheel 14 is mounted on The transmission shaft 5 is disposed between the two spring fixing discs 8; the internal thread on the adjusting thread wheel 14 is engaged with the driving spring 6; one end of the adjusting U-ring 13 is mounted on the adjusting handle 15; One end of the U-ring 13 on which the adjustment handle 15 is mounted is mounted on the transmission shaft 5; the other end of the adjustment U-ring 13 is mounted on the end surface of the adjustment threaded wheel 14 away from the side of the drive motor 1;
  • the ring gear 9 is mounted on the fixed plate 4 via the ring gear support 3, and the inner ring gear 9 is nested Adjusting the outer side of the threaded wheel 14; the inner ring gear 9 is engaged with the external thread on the adjusting threaded wheel 14; as shown in Fig.
  • the tooth inclination angle of the second adjustment tooth 23 is larger than the tooth inclination angle of the first adjustment tooth 16.
  • the adjustment thread wheel 14 acts on the drive spring 6 in a limited position.
  • the relative position of the adjustment screw wheel 14 to the drive spring 6 can be controlled by adjusting the adjustment knob 15 before use; thereby controlling the initial elastic performance of the drive spring 6.
  • the first adjusting tooth 16 is disposed outside the transmission shaft 5 under the cooperation of the compression spring 18 and the weight 19, and the transmission gear 7 and the transmission shaft are smaller than the transmission gear 7 and the driving spring 6 are engaged. 5 gap between the outer circular faces; in the initial state, the first adjusting tooth 16 is lower than the adjusting screw wheel 14 and the driving spring 6 by the cooperation of the compression spring 18 and the weight 19 at a height smaller than the adjusting screw wheel 14 and the driving spring 6 A gap between the threaded wheel 14 and the outer circular surface of the drive shaft 5.
  • the second adjusting tooth 23 has a maximum height outside the transmission shaft 5 under the combined action of the tension spring 21 and the centrifugal force, less than the meshing of the transmission gear 7 and the driving spring 6, the transmission gear 7 and the transmission shaft 5
  • the gap between the outer circular faces; in the working state, the maximum height of the second adjusting tooth 23 outside the transmission shaft 5 under the action of the tension spring 21 and the centrifugal force is smaller than the engagement between the adjusting screw wheel 14 and the driving spring 6, and the adjusting thread The gap between the wheel 14 and the outer circular surface of the drive shaft 5.
  • the wheelchair designed by the present invention can convert the high speed of the working motor 1 to a lower speed through the worm transmission mechanism; thereby driving the wheelchair to work; the same can be operated by mistakes
  • the snoring drive motor 1 can have enough turn-off or adjustment.
  • the transmission shaft 5 is coupled to the output shaft of the drive motor 1; the outer circular surface of the transmission shaft 5 is evenly encased with a plurality of first tooth grooves 26 in the axial direction; the lower side of the first tooth groove 26
  • the first centrifugal groove 20 is disposed, and each of the first tooth grooves 26 communicates with the first centrifugal groove 20; the first centrifugal groove 20 passes through the center of the transmission shaft 5; the outer circular surface of the transmission shaft 5 is along the axial direction
  • the socket 26 is at an angle of ninety degrees with the adjacent second tooth groove 25; the structure of each of the first tooth grooves 26 is completely the same; for any one of them, the spring fixing plate 17 is installed at the first One end of the tooth groove 26 near the axis of the
  • the adjustment screw wheel 14 acts on the drive spring 6 in a limited position.
  • the relative position of the adjustment screw wheel 14 and the drive spring 6 can be controlled by adjusting the adjustment knob 15 before use; thereby controlling the initial elastic performance of the drive spring 6.
  • the height of the first adjusting tooth 16 outside the transmission shaft 5 under the cooperation of the compression spring 18 and the weight 19 is smaller than the engagement of the transmission gear 7 and the driving spring 6, and the outer surface of the transmission gear 7 and the transmission shaft 5
  • the gap between the first adjusting teeth 16 in the initial state under the action of the compression spring 18 and the weight 19 is less than the engagement of the adjusting screw wheel 14 and the driving spring 6
  • the adjusting thread wheel 14 is The gap between the outer circular faces of the drive shaft 5.
  • the second adjusting tooth 23 has a maximum height outside the transmission shaft 5 under the combined action of the tension spring 21 and the centrifugal force, less than the meshing of the transmission gear 7 and the driving spring 6, and the outer surface of the transmission gear 7 and the transmission shaft 5
  • the gap between the second adjusting teeth 2 3 under the action of the tension spring 21 and the centrifugal force is smaller than the adjustment of the threaded wheel 14 and the driving spring 6 in the working state, and the adjusting thread wheel 14 and the gap between the outer circumference of the drive shaft 5.
  • the wheelchair designed by the present invention is rotated by the adjusting handle 15 before use; the adjusting U-ring 13 is rotated by the adjusting handle 15; the adjusting U-shaped ring 13 drives the adjusting threaded wheel 14 to rotate; State; that is, the inner ring 9 is in a stationary state; the inner ring 9 is engaged with the external thread on the adjusting threaded wheel 14; therefore, when the adjusting threaded wheel 14 rotates, the adjusting threaded wheel 14 moves along the axis of the adjusting threaded wheel 14, ie
  • the relative position of the adjustment screw wheel 14 to the drive spring 6 can be controlled by adjusting the adjustment knob 15; thereby controlling the initial elastic performance of the drive spring 6.
  • the maximum torque that can be transmitted by the drive spring 6 is controlled; the initial elastic performance of the thread is adjusted; the control drive motor 1 starts to work; the drive motor 1 drives the drive shaft 5 to rotate; the drive shaft 5 drives the two spring-mounted discs. 8 rotation; two spring fixed discs 8 drive the drive spring 6 to rotate; the drive spring 6 rotates to drive the transmission gear 7 to rotate; the transmission gear 7 drives the gear The shaft 11 is rotated; the rotational force can be transmitted to the tire of the wheelchair through the gear shaft 11; and the wheelchair is driven by the rotation of the tire; in the present invention, the initial elastic performance of the drive spring 6 when the drive transmission gear 7 rotates is determined; After the driving motor 1 is operated, the speed at which the driving motor 1 drives the driving shaft 5 to rotate is gradually increased, since the weight 19 is mounted at the lower end of the connecting rod 27, and the weight 19 is located in the first centrifugal groove 20; And the first adjusting teeth 16 are respectively located on opposite sides of the transmission shaft 5; therefore, under the action of centrifugation, the weight 19
  • the ⁇ drive spring 6 can transmit Torque Continuously decreasing; when the first adjustment tooth 16 is about to completely move to the inner side of the transmission shaft 5, the second adjustment tooth 23 also just moves out of the transmission shaft 5; then the first adjustment tooth 16 and the second adjustment tooth 23 pair
  • the binding force of the driving spring 6 is minimum; as shown in the paragraph (bc) of Fig. 20, that is, the torque transmitted by the driving spring 6 is the smallest; and when the first adjusting tooth 16 is completely moved to the inner side of the transmission shaft 5, the second adjusting tooth 23
  • the height of the moving drive shaft 5 is also gradually increased; the binding force of the second adjusting tooth 23 to the driving spring 6 is gradually increased; as shown in Fig.
  • the driving spring 6 can transmit The torque is also continuously increased; when the second adjusting tooth 23 completely moves out of the transmission shaft 5 ⁇ ; the torque transmitted by the driving spring 6 also reaches the maximum stable state; as shown in Fig. 21, the rotational speed of the transmission gear 7 is also stabilized. status.
  • the elastic performance of the drive spring 6 is adjusted in the initial state.
  • the tooth inclination angle of the second adjustment tooth 23 is larger than the tooth inclination angle of the first adjustment tooth 16; that is, the second adjustment tooth 23 is moved to the transmission shaft 5
  • the binding force of the outermost jaw to the drive spring 6 is greater than the binding force of the first adjustment tooth 16 to the drive spring 6 in the initial state; that is, the torque of the drive spring 6 initially driving the transmission gear 7 is smaller than the drive spring 6 after the transmission gear 7 is stabilized.
  • the torque of the drive transmission gear 7 is driven.
  • the weight 19 since the weight 19 is mounted as a whole on the drive shaft 5 and mounted on the lower side of the connecting rod 27; therefore, when the weight 19 is moved, the weight 19 will drive all the connecting rods 27 to move; All the first adjusting teeth 16 are driven to move; therefore, the binding force of all the first adjusting teeth 16 on the driving shaft 5 to the driving spring 6 is synchronously changed; that is, the driving spring 6 transmits the torque ⁇ , the driving spring 6
  • the portion that acts on the transmission gear 7 as a whole receives the pressing force of the transmission gear 7 against the drive spring 6 during the rotation; in the present invention, all of the first adjustment teeth 16 on the toothed connecting plate 22 and the transmission shaft 5 are present.
  • a wheelchair designed by the present invention is used by a person to rotate the adjusting handle 15 before use; the adjusting knob 15 is used to drive the adjusting U-ring 13 to rotate; the adjusting U-ring 13 drives the adjusting threaded wheel 14 to rotate;
  • the motor 1 is in a stop state; that is, the inner ring gear 9 is in a stationary state; the inner ring gear 9 is engaged with the external thread on the adjusting thread wheel 14; therefore, when the adjusting thread wheel 14 is rotated, the adjusting thread wheel 14 is adjusted along the adjusting thread wheel.
  • the 14 axis moves, i.e., the relative position of the adjustment threaded wheel 14 to the drive spring 6 can be controlled by adjusting the adjustment handle 15; thereby controlling the initial elastic performance of the drive spring 6.
  • the maximum torque that can be transmitted by the drive spring 6 is controlled; the initial elastic performance of the thread is adjusted; the control drive motor 1 starts to work; the drive motor 1 drives the drive shaft 5 to rotate; the drive shaft 5 drives the two spring-mounted discs. 8 rotation; two spring fixed discs 8 drive the drive spring 6 to rotate; the drive spring 6 rotates to drive the transmission gear 7 to rotate; the transmission gear 7 drives the gear shaft 11 to rotate; through the gear shaft 11 can transmit the rotational force to the tire of the wheelchair; In turn, the wheelchair is driven by the rotation of the tire.
  • the present invention has been successfully developed and has been used in the field of industrial technology; therefore, the present invention has industrial applicability.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Transmission Devices (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)

Abstract

Disclosed is a worm drive mechanism for a wheelchair, wherein same relates to the technical field of wheelchair driving, and the worm drive mechanism comprises a driving motor (1), a driving spring (6), and a drive gear (7). The wheelchair designed according to the present invention is used by people, and before using the wheelchair, a person rotates an adjustment handle (15); a U-shaped adjustment ring (13) is driven to rotate by the adjustment handle (15); the U-shaped adjustment ring (13) drives an threaded adjustment wheel (14) to rotate; and the rotation of the threaded adjustment wheel (14) causes the threaded adjustment wheel (14) to move along an axis of the threaded adjustment wheel (14), that is to say, the initial elastic performance of the driving spring (6) can be controlled by adjusting the adjustment handle (15), and in turn, the maximum torque that can be transmitted by the driving spring (6) is controlled. Upon the adjustment of the initial elastic performance of threads, the driving motor (1) is controlled to start to operate, the driving motor (1) drives a drive shaft (5) to rotate, the drive shaft (5) drives two spring fixing disks (8) to rotate, the two spring fixing disks (8) drive the driving spring (6) to rotate, the driving spring (6) rotates to drive the drive gear (7) to rotate, and the drive gear (7) then drives a gear shaft (11) to rotate, and the wheelchair can thus be driven to operate by means of the rotation of the gear shaft (11).

Description

发明名称：一种用于轮椅的蜗杆传动机构  Title of Invention: A worm drive mechanism for a wheelchair
技术领域  Technical field
[0001] 本发明属于轮椅驱动技术领域， 尤其涉及一种用于轮椅的蜗杆传动机构。  [0001] The present invention belongs to the technical field of wheelchair driving, and in particular to a worm gear mechanism for a wheelchair.
背景技术  Background technique
[0002] 轮椅作为残疾人员的行走工具， 通常由电力驱动， 通常关闭比较困难， 给残疾 人员带来了不少麻烦。  [0002] Wheelchairs are used as walking tools for disabled people, usually driven by electricity. It is usually difficult to close, which brings a lot of trouble to disabled people.
技术问题  technical problem
[0003] 目前使用的轮椅在使用过程中， 人们因为错误操作打幵驱动电机幵关后就很难 使其关闭； 而且可能因为人们的下意识动作而将手臂扭伤； 这样就给使用者带 来了很多不便； 所以设计一种能够通过自动调节在人们因为错误操作打幵驱动 电机幵关吋， 能够有足够的吋间关闭或者调整的轮椅传动机构是非常有必要的 问题的解决方案  [0003] During the use of the wheelchair currently in use, it is difficult for people to turn off the motor because of the wrong operation of the snoring drive motor; and the arm may be sprained because of the subconscious movement; thus, the user is brought A lot of inconvenience; therefore, it is a very necessary solution to design a wheelchair transmission mechanism that can automatically turn off the motor drive because of the wrong operation.
技术解决方案  Technical solution
[0004] 为解决现有技术中的上述缺陷， 本发明公幵一种用于轮椅的蜗杆传动机构， 它 是采用以下技术方案来实现的。  In order to solve the above-mentioned drawbacks in the prior art, the present invention discloses a worm gear mechanism for a wheelchair which is realized by the following technical solutions.
[0005] 一种用于轮椅的蜗杆传动机构， 其特征在于： 它包括驱动电机、 电机支撑、 齿 环支撑、 固定板、 传动轴、 驱动弹簧、 传动齿轮、 弹簧固定圆盘、 内齿环、 弧 形连接板、 齿轮轴、 连接圆盘、 调节 U形环、 调节螺纹轮、 调节把手、 第一调节 齿牙、 弹簧固定板、 压缩弹簧、 重块、 第一离心槽、 拉伸弹簧、 齿牙连接板、 第二调节齿牙、 第二离心槽、 第二齿牙槽、 第一齿牙槽、 连接杆， 其中驱动电 机通过电机支撑安装在固定板上； 传动轴与驱动电机输出轴连接； 传动轴的外 圆面上沿轴线方向上均匀地幵有许多第一齿牙槽； 第一齿牙槽的下侧幵有第一 离心槽， 且每个第一齿牙槽均与第一离心槽相通； 第一离心槽经过传动轴的中 心； 传动轴的外圆面上沿轴线方向上均匀地幵有许多第二齿牙槽； 第二齿牙槽 的下侧幵有第二离心槽， 且每个第二齿牙槽与第二离心槽均相通； 第一齿牙槽 与相邻的第二齿牙槽之间成九十度夹角； 每个第一齿牙槽内所安装结构完全相 同； 对于其中任意一个， 弹簧固定板安装在第一齿牙槽内靠近传动轴轴线的一 端； 第一调节齿牙安装在第一齿牙槽内远离传动轴轴线的一端； 连接杆的一端 安装在第一调节齿牙上； 连接杆的另一端穿过弹簧固定板位于第一离心槽内； 弹簧固定板与第一调节齿牙之间安装有压缩弹簧； 重块安装在连接杆的下端， 且重块位于第一离心槽内； 重块和第一调节齿牙分别位于传动轴相互对称的两 侧； 每个第二齿牙槽内所安装结构完全相同； 对于其中任意一个， 第二调节齿 牙安装在第二齿牙槽内远离传动轴轴线的一端； 齿牙连接板安装在第二调节齿 牙的下端， 且齿牙连接板位于第二离心槽内； 齿牙连接板与第二离心槽之间均 匀地安装有许多拉伸弹簧； 传动轴的两端分别安装有一个弹簧固定圆盘， 且两 个弹簧固定圆盘发分别位于第一调节齿牙和第二调节齿牙的两侧； 驱动弹簧的 两端分别安装在两个弹簧固定圆盘上， 且驱动弹簧嵌套于传动轴上； 驱动弹簧 分别与安装在传动轴上的第一调节齿牙和第二调节齿牙配合； 调节螺纹轮的外 圆面上具有外螺纹； 调节螺纹轮的内圆面上具有内螺纹； 调节螺纹轮安装在传 动轴上， 且调节螺纹轮位于两个弹簧固定圆盘之间； 调节螺纹轮上的内螺纹与 驱动弹簧配合； 调节 U形环的一端安装在有调节把手； 调节 U形环上安装有调节 把手的一端安装在传动轴上； 调节 U形环的另一端安装在调节螺纹轮远离驱动电 机一侧的端面上； 内齿环通过齿环支撑安装在固定板上， 且内齿环嵌套与调节 螺纹轮外侧； 内齿环与调节螺纹轮上的外螺纹配合； 内齿环远离驱动电机的一 侧端面上对称地安装有两个弧形连接板； 连接圆盘安装在传动轴上， 且连接圆 盘与两个弧形连接板连接； 齿轮轴的一端安装在靠近驱动电机一侧的固定板上[0005] A worm gear mechanism for a wheelchair, comprising: a drive motor, a motor support, a ring support, a fixed plate, a drive shaft, a drive spring, a transmission gear, a spring fixed disc, an internal gear ring, Curved connecting plate, gear shaft, connecting disc, adjusting U-ring, adjusting thread wheel, adjusting handle, first adjusting tooth, spring fixing plate, compression spring, weight, first centrifugal groove, tension spring, tooth a tooth connecting plate, a second adjusting tooth, a second centrifugal groove, a second tooth groove, a first tooth groove, a connecting rod, wherein the driving motor is mounted on the fixing plate through the motor support; the transmission shaft is connected with the output shaft of the driving motor a plurality of first tooth grooves are evenly distributed on the outer circumferential surface of the drive shaft along the axial direction; the first side of the first tooth groove has a first centrifugal groove, and each of the first tooth grooves is first The centrifugal groove is connected; the first centrifugal groove passes through the center of the transmission shaft; the outer circular surface of the transmission shaft has a plurality of second tooth grooves uniformly along the axial direction; the second tooth groove has a second centrifugal groove on the lower side And Alveolar second tooth grooves each communicating with the second centrifugal; a first tooth alveolus An angle of ninety degrees with the adjacent second tooth groove; the structure of each of the first tooth slots is exactly the same; for any one of them, the spring fixing plate is installed in the first tooth groove and close to the transmission One end of the shaft axis; the first adjusting tooth is mounted at one end of the first tooth groove away from the axis of the drive shaft; one end of the connecting rod is mounted on the first adjusting tooth; the other end of the connecting rod is located through the spring fixing plate a centrifugal groove; a compression spring is mounted between the spring fixing plate and the first adjusting tooth; the weight is installed at the lower end of the connecting rod, and the weight is located in the first centrifugal groove; the weight and the first adjusting tooth are respectively located The two sides of the drive shaft are symmetric with each other; the structure of each of the second tooth slots is exactly the same; for any one of them, the second adjusting tooth is mounted at one end of the second tooth groove away from the axis of the drive shaft; The plate is mounted on the lower end of the second adjusting tooth, and the tooth connecting plate is located in the second centrifugal groove; a plurality of tension springs are evenly mounted between the tooth connecting plate and the second centrifugal groove; Mounting a spring-fixing disc, and two spring-fixing discs are respectively located on two sides of the first adjusting tooth and the second adjusting tooth; the two ends of the driving spring are respectively mounted on the two spring fixing discs, and a driving spring is nested on the transmission shaft; the driving spring is respectively matched with the first adjusting tooth and the second adjusting tooth mounted on the transmission shaft; the external thread on the outer circular surface of the adjusting thread wheel; adjusting the inner circle of the thread wheel The surface has an internal thread; the adjusting thread wheel is mounted on the transmission shaft, and the adjusting thread wheel is located between the two spring fixing discs; the internal thread on the adjusting thread wheel is matched with the driving spring; one end of the adjusting U-ring is installed Adjusting the handle; adjusting one end of the U-ring on which the adjustment handle is mounted is mounted on the drive shaft; the other end of the adjustment U-ring is mounted on the end face of the adjustment screw wheel away from the drive motor; the internal ring gear is mounted on the support of the ring gear Fixing plate, and the inner ring is nested and adjusted outside the threaded wheel; the inner ring is matched with the external thread on the adjusting thread wheel; the inner ring is symmetrically mounted on the side end face away from the driving motor There are two curved connecting plates; the connecting disc is mounted on the transmission shaft, and the connecting disc is connected with the two curved connecting plates; one end of the gear shaft is mounted on the fixing plate near the side of the driving motor
； 传动齿轮安装在齿轮轴的另一端； 传动齿轮于驱动弹簧啮合。 The transmission gear is mounted on the other end of the gear shaft; the transmission gear meshes with the drive spring.
[0006] 作为本技术的进一步改进， 上述第二调节齿牙的齿牙倾斜角大于第一调节齿牙 的齿牙倾斜角。  As a further improvement of the present technology, the tooth pitch angle of the second adjusting tooth is larger than the tooth tilt angle of the first adjusting tooth.
[0007] 作为本技术的进一步改进， 上述调节螺纹轮对驱动弹簧有限位作用。  [0007] As a further improvement of the present technology, the above-described adjustment threaded wheel acts on the drive spring in a limited position.
[0008] 作为本技术的进一步改进， 上述在使用之前可以通过调节调节把手来控制调节 螺纹轮与驱动弹簧的相对位置； 从而控制驱动弹簧的初始弹性性能。  As a further improvement of the present technology, the relative position of the adjustment screw wheel and the drive spring can be controlled by adjusting the adjustment handle before use; thereby controlling the initial elastic performance of the drive spring.
[0009] 作为本技术的进一步改进， 上述在初始状态下第一调节齿牙在压缩弹簧和重块 的共同作用下处于传动轴外侧的高度小于传动齿轮和驱动弹簧啮合吋， 传动齿 轮与传动轴外圆面之间的间隙； 初始状态下第一调节齿牙在压缩弹簧和重块的 共同作用下处于传动轴外侧的高度小于调节螺纹轮和驱动弹簧啮合吋， 调节螺 纹轮与传动轴外圆面之间的间隙。 [0009] As a further improvement of the present technology, in the initial state, the first adjustment tooth is in the compression spring and the weight Under the joint action, the height outside the transmission shaft is smaller than the gap between the transmission gear and the driving spring, the gap between the transmission gear and the outer circumference of the transmission shaft; in the initial state, the first adjustment tooth is under the joint action of the compression spring and the weight The height outside the drive shaft is smaller than the adjustment screw wheel and the drive spring engagement 吋, and the gap between the thread wheel and the outer circular surface of the drive shaft is adjusted.
[0010] 作为本技术的进一步改进， 上述在工作状态下第二调节齿牙在拉伸弹簧和离心 力的共同作用下处于传动轴外侧的最大高度小于传动齿轮和驱动弹簧啮合吋， 传动齿轮与传动轴外圆面之间的间隙； 在工作状态下第二调节齿牙在拉伸弹簧 和离心力的作用下处于传动轴外侧的最大高度小于调节螺纹轮和驱动弹簧啮合 吋， 调节螺纹轮与传动轴外圆面之间的间隙。  [0010] As a further improvement of the present technology, in the working state, the maximum height of the second adjusting tooth under the action of the tension spring and the centrifugal force is smaller than the transmission gear and the driving spring, and the transmission gear and the transmission The gap between the outer circular surfaces of the shaft; under the working condition, the maximum height of the second adjusting tooth under the tension spring and the centrifugal force is smaller than the adjusting screw wheel and the driving spring, and the adjusting screw wheel and the driving shaft The gap between the outer circular faces.
[0011] 相对于传统的轮椅驱动技术， 本发明设计的轮椅通过蜗杆传动机构可以将驱动 电机工作吋的高转速转化为较低的转速； 从而驱动轮椅工作； 同吋通过自动调 节可以在人们因为错误操作打幵驱动电机幵关吋能够有足够的吋间关闭或者调 整。  [0011] Compared with the conventional wheelchair driving technology, the wheelchair designed by the invention can convert the high rotation speed of the driving motor working raft into a lower rotation speed through the worm transmission mechanism; thereby driving the wheelchair to work; the same can be achieved by the automatic adjustment Incorrect operation of the slamming drive motor can be turned off or adjusted.
[0012] 本发明中传动轴与驱动电机输出轴连接； 传动轴的外圆面上沿轴线方向上均匀 地幵有许多第一齿牙槽； 第一齿牙槽的下侧幵有第一离心槽， 且每个第一齿牙 槽均与第一离心槽相通； 第一离心槽经过传动轴的中心； 传动轴的外圆面上沿 轴线方向上均匀地幵有许多第二齿牙槽； 第二齿牙槽的下侧幵有第二离心槽， 且每个第二齿牙槽与第二离心槽均相通； 第一齿牙槽与相邻的第二齿牙槽之间 成九十度夹角； 每个第一齿牙槽内所安装结构完全相同； 对于其中任意一个， 弹簧固定板安装在第一齿牙槽内靠近传动轴轴线的一端； 第一调节齿牙安装在 第一齿牙槽内远离传动轴轴线的一端； 连接杆的一端安装在第一调节齿牙上； 连接杆的另一端穿过弹簧固定板位于第一离心槽内； 弹簧固定板与第一调节齿 牙之间安装有压缩弹簧； 重块安装在连接杆的下端， 且重块位于第一离心槽内 ； 重块和第一调节齿牙分别位于传动轴相互对称的两侧； 每个第二齿牙槽内所 安装结构完全相同； 对于其中任意一个， 第二调节齿牙安装在第二齿牙槽内远 离传动轴轴线的一端； 齿牙连接板安装在第二调节齿牙的下端， 且齿牙连接板 位于第二离心槽内； 齿牙连接板与第二离心槽之间均匀地安装有许多拉伸弹簧 ； 传动轴的两端分别安装有一个弹簧固定圆盘， 且两个弹簧固定圆盘分别位于 第一调节齿牙和第二调节齿牙的两侧； 驱动弹簧的两端分别安装在两个弹簧固 定圆盘上， 且驱动弹簧嵌套于传动轴上； 驱动弹簧分别与安装在传动轴上的第 一调节齿牙和第二调节齿牙配合； 调节螺纹轮的外圆面上具有外螺纹； 调节螺 纹轮的内圆面上具有内螺纹； 调节螺纹轮安装在传动轴上， 且调节螺纹轮位于 两个弹簧固定圆盘之间； 调节螺纹轮上的内螺纹与驱动弹簧配合； 调节 U形环的 一端安装在有调节把手； 调节 U形环上安装有调节把手的一端安装在传动轴上； 调节 u形环的另一端安装在调节螺纹轮远离驱动电机一侧的端面上； 内齿环通过 齿环支撑安装在固定板上， 且内齿环嵌套与调节螺纹轮外侧； 内齿环与调节螺 纹轮上的外螺纹配合； 内齿环远离驱动电机的一侧端面上对称地安装有两个弧 形连接板； 连接圆盘安装在传动轴上， 且连接圆盘与两个弧形连接板连接； 齿 轮轴的一端安装在靠近驱动电机一侧的固定板上； 传动齿轮安装在齿轮轴的另 一端； 传动齿轮于驱动弹簧啮合； 本发明中第二调节齿牙的齿牙倾斜角大于第 一调节齿牙的齿牙倾斜角。 本发明中调节螺纹轮对驱动弹簧有限位作用。 本发 明中在使用之前可以通过调节调节把手来控制调节螺纹轮与驱动弹簧的相对位 置； 从而控制驱动弹簧的初始弹性性能。 在初始状态下第一调节齿牙在压缩弹 簧和重块的共同作用下处于传动轴外侧的高度小于传动齿轮和驱动弹簧啮合吋 ， 传动齿轮与传动轴外圆面之间的间隙； 初始状态下第一调节齿牙在压缩弹簧 和重块的共同作用下处于传动轴外侧的高度小于调节螺纹轮和驱动弹簧啮合吋 ， 调节螺纹轮与传动轴外圆面之间的间隙。 在工作状态下第二调节齿牙在拉伸 弹簧和离心力的共同作用下处于传动轴外侧的最大高度小于传动齿轮和驱动弹 簧啮合吋， 传动齿轮与传动轴外圆面之间的间隙； 在工作状态下第二调节齿牙 在拉伸弹簧和离心力的作用下处于传动轴外侧的最大高度小于调节螺纹轮和驱 动弹簧啮合吋， 调节螺纹轮与传动轴外圆面之间的间隙。 人们使用本发明设计 的轮椅， 在使用之前人们通过转动调节把手； 通过调节把手带动调节 U形环转动 ； 调节 u形环带动调节螺纹轮转动； 由于此吋驱动电机处于停机状态； 即内齿环 处于静止状态； 内齿环与调节螺纹轮上的外螺纹配合； 所以当调节螺纹轮转动 就会使得调节螺纹轮沿着调节螺纹轮轴线移动， 即可以通过调节调节把手来控 制调节螺纹轮与驱动弹簧的相对位置； 从而控制驱动弹簧的初始弹性性能。 进 而控制驱动弹簧所能传递的最大扭矩； 在人们调节好螺纹的初始弹性性能吋； 控制驱动电机幵始工作； 驱动电机带动传动轴转动； 传动轴带动两个弹簧固定 圆盘转动； 两个弹簧固定圆盘带动驱动弹簧转动； 驱动弹簧转动带动传动齿轮 转动； 传动齿轮带动齿轮轴转动； 通过齿轮轴可以将旋转力传递到轮椅的轮胎 上； 进而通过轮胎转动带动轮椅工作； 本发明中当驱动传动齿轮转动的驱动弹 簧的初始弹性性能确定后； 驱动电机工作； 在驱动电机工作吋， 驱动电机带动 传动轴转动的速度会逐渐提高， 由于重块安装在连接杆的下端， 且重块位于第 一离心槽内； 重块和第一调节齿牙分别位于传动轴相互对称的两侧； 所以在离 心作用下， 重块会带动连接杆向远离第一调节齿牙的一侧移动； 连接杆带动第 一调节齿牙向传动轴的内侧移动； 而第二调节齿牙在离心力的作用下逐渐向传 动轴的外侧移动； 第一调节齿牙在初始移动过程中第一调节齿牙对驱动弹簧的 束缚力会逐渐减小； 而此吋第二调节齿牙还未移动出传动轴； 所以此吋驱动弹 簧所能传递的扭矩会不断减小； 当第一调节齿牙快要完全移动到传动轴内侧吋 ， 第二调节齿牙也刚好移出传动轴； 此吋第一调节齿牙和第二调节齿牙对驱动 弹簧的束缚力最小； 即驱动弹簧所传递的扭矩最小； 而当第一调节齿牙完全移 动到传动轴内侧吋， 第二调节齿牙移动出传动轴的高度也逐渐变大； 此吋第二 调节齿牙对驱动弹簧的束缚力逐渐加大； 即驱动弹簧所能传递的扭矩也不断加 大； 当第二调节齿牙完全移动出传动轴吋； 驱动弹簧所传递的扭矩也达到最大 稳定状态； 即传动齿轮的转动速度也达到稳定状态。 人们在使用轮椅吋， 当人 们因为错误操作而将驱动电机幵关打幵吋； 驱动电机就会工作； 轮胎就会转动 ； 而此吋人们下意识就会去握紧轮椅轮胎； 如果轮胎的转动扭矩较大吋， 就有 可能将手臂扭伤； 所以本发明中通过控制第一调节齿牙和第二调节齿牙对驱动 弹簧的束缚力； 使得人们在握紧轮胎吋； 第一调节齿牙和第二调节齿牙对驱动 弹簧的束缚力最小； 即驱动弹簧所传递的扭矩最小； 即轮椅轮胎的旋转扭矩最 小； 此吋当人们握紧轮椅轮胎吋； 轮胎就会停止转动； 而在轮胎停止转动后传 动齿轮就会挤压驱动弹簧； 使得驱动弹簧压缩； 而当弹簧压缩到极限吋； 驱动 弹簧就会再次带动传动齿轮转动； 但是在此过程中人们已经调整好或者已经将 驱动电机关闭； 所以本发明中可以通过控制驱动弹簧的弹性来延迟当传动齿轮 承载力突然加大吋驱动弹簧再次驱动传动齿轮转动的吋间； 同吋通过驱动弹簧 的弹性可以吸收一部分传动齿轮对传动轴的冲击； 即保护了传动轴； 保护了驱 动电机。 本发明中在初始状态下调节驱动弹簧的弹性性能吋， 在调节螺纹轮的 转动过程中， 调节螺纹轮的内螺纹正好与驱动弹簧啮合转动； 所以调节螺纹轮 在移动过程中不会与驱动弹簧发生干涉； 本发明中由于第二调节齿牙的齿牙倾 斜角大于第一调节齿牙的齿牙倾斜角； 即第二调节齿牙在移动到传动轴最外侧 吋对驱动弹簧的束缚力大于第一调节齿牙在初始状态吋对驱动弹簧的束缚力； 即驱动弹簧初始驱动传动齿轮的扭矩小于在传动齿轮稳定后驱动弹簧驱动传动 齿轮的扭矩。 本发明中由于重块是作为一个整体安装在传动轴上所安装在连接 杆下侧； 所以当重块在移动过程中重块会带动所有的连接杆一起移动； 即带动 所有的第一调节齿牙一起移动； 所以传动轴上所有的第一调节齿牙对驱动弹簧 的束缚力是同步变化； 即驱动弹簧在传递扭矩吋， 驱动弹簧上对传动齿轮起作 用的部分通过整体来承受传动齿轮在转动过程中对驱动弹簧的挤压力； 保护了 驱动弹簧； 本发明中由于齿牙连接板与传动轴上的所有第一调节齿牙连接在一 起； 所以在离心作用下传动轴上的所有第二调节齿牙会一起移动； 即传动轴上 第二调节齿牙对驱动弹簧的束缚力是同步变化； 即驱动弹簧在传递扭矩吋， 驱 动弹簧上对传动齿轮起作用的部分通过整体来承受传动齿轮在转动过程中对驱 动弹簧的挤压力； 保护了驱动弹簧。 [0012] In the present invention, the transmission shaft is connected to the output shaft of the driving motor; the outer circular surface of the transmission shaft is evenly encirculated with a plurality of first tooth grooves in the axial direction; the lower side of the first tooth groove is firstly centrifuged a groove, and each of the first tooth slots is in communication with the first centrifugal groove; the first centrifugal groove passes through the center of the transmission shaft; the outer circumferential surface of the transmission shaft is evenly encirculated with a plurality of second tooth grooves in the axial direction; The second tooth groove has a second centrifugal groove, and each of the second tooth grooves communicates with the second centrifugal groove; the first tooth groove is adjacent to the adjacent second tooth groove. Angle of installation; the structure of each of the first tooth slots is exactly the same; for any one of them, the spring fixing plate is installed at one end of the first tooth groove near the axis of the transmission shaft; the first adjustment tooth is installed at the first One end of the tooth groove away from the axis of the drive shaft; one end of the connecting rod is mounted on the first adjusting tooth; the other end of the connecting rod is located in the first centrifugal groove through the spring fixing plate; the spring fixing plate and the first adjusting tooth a compression spring is installed between them; the weight is mounted on the connecting rod a lower end, and the weight is located in the first centrifugal groove; the weight and the first adjustment tooth are respectively located on two sides of the transmission shaft symmetrical; the structure of each second tooth groove is completely the same; for any one of them, The second adjusting tooth is installed at one end of the second tooth groove away from the axis of the driving shaft; the tooth connecting plate is installed at the lower end of the second adjusting tooth, and the tooth connecting plate is located in the second centrifugal groove; the tooth connecting plate and A plurality of tension springs are evenly mounted between the second centrifugal grooves; a spring fixed disc is respectively mounted on both ends of the transmission shaft, and two spring fixed discs are respectively located Both sides of the first adjusting tooth and the second adjusting tooth; the two ends of the driving spring are respectively mounted on the two spring fixing discs, and the driving spring is nested on the driving shaft; the driving springs are respectively mounted on the driving shaft The first adjusting tooth and the second adjusting tooth are matched; the adjusting thread wheel has an external thread on the outer circular surface; the adjusting thread wheel has an internal thread on the inner circular surface; the adjusting thread wheel is mounted on the driving shaft, and the adjusting thread is adjusted The wheel is located between the two spring fixing discs; the internal thread on the adjusting thread wheel is matched with the driving spring; one end of the adjusting U-ring is mounted on the adjusting handle; the end of the adjusting U-ring on which the adjusting handle is mounted is mounted on the transmission shaft The other end of the adjusting u-ring is mounted on the end face of the adjusting screw wheel away from the driving motor side; the inner ring gear is mounted on the fixing plate by the ring gear support, and the inner ring gear is nested and adjusted outside the threaded wheel; The ring cooperates with the external thread on the adjusting thread wheel; two curved connecting plates are symmetrically mounted on one end surface of the inner ring gear away from the driving motor; the connecting disc is mounted on the transmission shaft, and is connected The disc is connected with two arc connecting plates; one end of the gear shaft is mounted on a fixing plate near one side of the driving motor; the transmission gear is mounted at the other end of the gear shaft; the transmission gear is meshed with the driving spring; the second adjusting tooth in the invention The tooth inclination angle of the tooth is larger than the tooth inclination angle of the first adjustment tooth. In the present invention, the adjustment of the threaded wheel pair drive spring is limited. In the present invention, the relative position of the adjustment threaded wheel and the drive spring can be controlled by adjusting the adjustment handle before use; thereby controlling the initial elastic performance of the drive spring. In the initial state, the height of the first adjusting tooth outside the driving shaft under the action of the compression spring and the weight is smaller than the gap between the transmission gear and the driving spring, and the gap between the transmission gear and the outer circular surface of the transmission shaft; The first adjusting tooth has a height outside the driving shaft under the action of the compression spring and the weight is smaller than the adjusting thread wheel and the driving spring engaging 吋, and adjusts the gap between the thread wheel and the outer circular surface of the transmission shaft. In the working state, the maximum height of the second adjusting tooth under the action of the tension spring and the centrifugal force is smaller than the gap between the transmission gear and the driving spring, and the gap between the transmission gear and the outer circular surface of the transmission shaft; In the state, the second adjusting tooth has a maximum height outside the driving shaft under the action of the tension spring and the centrifugal force is smaller than the adjusting thread wheel and the driving spring engaging 吋, and adjusts the gap between the thread wheel and the outer circular surface of the transmission shaft. The wheelchair designed by the present invention is rotated by adjusting the handle before use; adjusting the U-ring by adjusting the handle; adjusting the u-ring to adjust the rotation of the threaded wheel; since the drive motor is in a stop state; In the static state; the internal gear ring cooperates with the external thread on the adjusting thread wheel; therefore, when the adjusting screw wheel rotates, the adjusting thread wheel moves along the axis of the adjusting thread wheel, that is, the adjusting screw wheel and the driving can be controlled by adjusting the adjusting handle The relative position of the spring; thereby controlling the initial elastic properties of the drive spring. Enter And control the maximum torque that the drive spring can transmit; adjust the initial elastic performance of the thread 人们; control the drive motor to start working; drive the motor to drive the drive shaft to rotate; drive shaft drives the two spring fixed disc to rotate; two springs The fixed disc drives the driving spring to rotate; the driving spring rotates to drive the transmission gear to rotate; the transmission gear drives the gear shaft to rotate; the rotating shaft can transmit the rotating force to the tire of the wheelchair; and then the wheel is driven by the rotation of the tire; After the initial elastic performance of the drive spring of the drive gear is determined; the drive motor works; after the drive motor works, the speed at which the drive motor drives the drive shaft will gradually increase, because the weight is installed at the lower end of the connecting rod, and the weight is located at the a centrifugal groove; the weight and the first adjusting tooth are respectively located on two sides of the transmission shaft symmetrical; therefore, under the action of centrifugation, the weight will drive the connecting rod to move away from the side of the first adjusting tooth; The first adjustment tooth moves toward the inner side of the transmission shaft; and the second adjustment The tooth gradually moves to the outside of the transmission shaft under the action of the centrifugal force; the first adjustment tooth has a gradually decreasing binding force to the driving spring during the initial movement; and the second adjustment tooth has not yet been adjusted. Move out of the drive shaft; therefore, the torque transmitted by the drive spring will continue to decrease; when the first adjustment tooth is about to move completely to the inside of the drive shaft, the second adjustment tooth just moves out of the drive shaft; The adjustment tooth and the second adjustment tooth have the least binding force to the drive spring; that is, the torque transmitted by the drive spring is minimum; and when the first adjustment tooth moves completely to the inner side of the drive shaft, the second adjustment tooth moves out of the drive shaft The height of the second adjusting tooth is gradually increased to the driving spring; that is, the torque transmitted by the driving spring is also continuously increased; when the second adjusting tooth completely moves out of the driving shaft; The torque transmitted by the drive spring also reaches a maximum steady state; that is, the rotational speed of the transmission gear also reaches a steady state. People use wheelchairs, when people drive the motor to shut down because of wrong operation; the drive motor will work; the tire will turn; and the people will subconsciously grip the wheelchair tires; if the tires rotate torque If the shackle is large, it is possible to sprain the arm; therefore, in the present invention, by controlling the binding force of the first adjusting tooth and the second adjusting tooth to the driving spring; so that the person is gripping the tire 吋; the first adjusting tooth and the second Adjusting the minimum force of the tooth to the drive spring; that is, the torque transmitted by the drive spring is the smallest; that is, the torque of the wheelchair tire is the smallest; this is when the person grips the wheelchair tire; the tire stops rotating; and after the tire stops rotating The drive gear will squeeze the drive spring; the drive spring will be compressed; and when the spring is compressed to the limit 吋; the drive spring will drive the drive gear to rotate again; but in the process, the motor has been adjusted or the drive motor has been turned off; In the invention, the transmission gear can be delayed by controlling the elasticity of the drive spring. The bearing capacity is suddenly increased, and the driving spring drives the turning of the transmission gear again; the same can absorb the impact of a part of the transmission gear on the transmission shaft by the elasticity of the driving spring; that is, the transmission shaft is protected; and the driving motor is protected. In the present invention, the elastic performance of the drive spring is adjusted in an initial state. During the rotation of the adjustment thread wheel, the internal thread of the adjustment thread wheel is just rotated in mesh with the drive spring; therefore, the adjustment thread wheel does not move with the drive spring during the movement. Interference occurs; in the present invention, the tooth inclination angle of the second adjustment tooth is larger than the tooth inclination angle of the first adjustment tooth; that is, the second adjustment tooth moves to the outermost side of the transmission shaft, and the binding force to the drive spring is greater than The first adjusting tooth has a binding force to the driving spring in an initial state; that is, the torque of the driving spring initial driving transmission gear is smaller than the torque of driving the spring driving transmission gear after the transmission gear is stabilized. In the present invention, since the weight is mounted as a whole on the transmission shaft and mounted on the lower side of the connecting rod; therefore, when the weight moves, the weight will drive all the connecting rods to move together; that is, drive all the first adjusting teeth The teeth move together; therefore, the binding force of all the first adjustment teeth on the drive shaft to the drive spring is synchronously changed; that is, the drive spring transmits the torque 吋, and the portion of the drive spring that acts on the transmission gear passes through the transmission gear as a whole. The pressing force on the driving spring during the rotation; the driving spring is protected; in the present invention, since the tooth connecting plate is connected with all the first adjusting teeth on the transmission shaft; therefore, all the parts on the transmission shaft under centrifugal action The second adjusting tooth will move together; that is, the binding force of the second adjusting tooth on the driving shaft to the driving spring is synchronously changed; that is, the driving spring transmits the torque 吋, and the part of the driving spring that acts on the transmission gear passes through the whole to bear the transmission. The pressing force of the gear on the drive spring during the rotation; the drive spring is protected.
发明的有益效果 Advantageous effects of the invention
有益效果 Beneficial effect
人们使用本发明设计的轮椅， 在使用之前人们通过转动调节把手； 通过调节把 手带动调节 U形环转动； 调节 U形环带动调节螺纹轮转动； 由于此吋驱动电机处 于停机状态； 即内齿环处于静止状态； 内齿环与调节螺纹轮上的外螺纹配合； 所以当调节螺纹轮转动就会使得调节螺纹轮沿着调节螺纹轮轴线移动， 即可以 通过调节调节把手来控制调节螺纹轮与驱动弹簧的相对位置； 从而控制驱动弹 簧的初始弹性性能。 进而控制驱动弹簧所能传递的最大扭矩； 在人们调节好螺 纹的初始弹性性能吋； 控制驱动电机幵始工作； 驱动电机带动传动轴转动； 传 动轴带动两个弹簧固定圆盘转动； 两个弹簧固定圆盘带动驱动弹簧转动； 驱动 弹簧转动带动传动齿轮转动； 传动齿轮带动齿轮轴转动； 通过齿轮轴可以将旋 转力传递到轮椅的轮胎上； 进而通过轮胎转动带动轮椅工作。 The wheelchair designed by the present invention is rotated by adjusting the handle before use; the U-ring is rotated by adjusting the handle; the U-ring is adjusted to adjust the rotation of the threaded wheel; since the drive motor is in a stop state; In the static state; the internal gear ring cooperates with the external thread on the adjusting thread wheel; therefore, when the adjusting screw wheel rotates, the adjusting thread wheel moves along the axis of the adjusting thread wheel, that is, the adjusting screw wheel and the driving can be controlled by adjusting the adjusting handle The relative position of the spring; thereby controlling the initial elastic properties of the drive spring. In turn, the maximum torque that can be transmitted by the drive spring is controlled; the initial elastic performance of the thread is adjusted; the control drive motor starts to work; the drive motor drives the drive shaft to rotate; the drive shaft drives the two spring fixed discs to rotate; The fixed disc drives the drive spring to rotate; The rotation of the spring drives the transmission gear to rotate; the transmission gear drives the gear shaft to rotate; the rotation force can be transmitted to the tire of the wheelchair through the gear shaft; and the wheelchair is driven by the rotation of the tire.
对附图的简要说明  Brief description of the drawing
附图说明  DRAWINGS
[0014] 图 1是整体部件安装示意图。  [0014] FIG. 1 is a schematic view showing the mounting of an integral part.
[0015] 图 2是整体部件内部结构示意图。  2 is a schematic view showing the internal structure of an integral part.
[0016] 图 3是整体部件内部结构安装示意图。  [0016] FIG. 3 is a schematic view showing the internal structure of the integral component.
[0017] 图 4是整体部件内部结构分布示意图。  4 is a schematic view showing the internal structure distribution of the entire component.
[0018] 图 5是整体部件内部结构剖视示意图。  [0018] FIG. 5 is a schematic cross-sectional view showing the internal structure of the entire component.
[0019] 图 6是内齿环结构示意图。  6 is a schematic view showing the structure of an internal ring gear.
[0020] 图 7是调节螺纹轮结构示意图。  [0020] FIG. 7 is a schematic view showing the structure of the adjusting screw wheel.
[0021] 图 8是传动齿轮安装示意图。  [0021] FIG. 8 is a schematic view showing the installation of a transmission gear.
[0022] 图 9是传动齿轮和驱动弹簧配合示意图。  [0022] FIG. 9 is a schematic view of the cooperation of the transmission gear and the drive spring.
[0023] 图 10是驱动弹簧安装示意图。  [0023] FIG. 10 is a schematic view of the mounting of the drive spring.
[0024] 图 11是第一调节齿牙安装示意图。  [0024] FIG. 11 is a schematic view showing the installation of the first adjustment tooth.
[0025] 图 12是第二调节齿牙安装示意图。  [0025] FIG. 12 is a schematic view of the second adjustment tooth installation.
[0026] 图 13是第二离心槽分布示意图。  Figure 13 is a schematic view showing the distribution of the second centrifugal tank.
[0027] 图 14是第一离心槽分布示意图。  [0027] FIG. 14 is a schematic view showing the distribution of the first centrifugal tank.
[0028] 图 15是传动轴结构示意图。  15 is a schematic structural view of a transmission shaft.
[0029] 图 16是第一调节齿牙分布示意图。  [0029] FIG. 16 is a schematic view showing the distribution of the first adjustment tooth.
[0030] 图 17是第一调节齿牙结构示意图。  17 is a schematic view showing the structure of a first adjustment tooth.
[0031] 图 18是第二调节齿牙分布示意图。  [0031] FIG. 18 is a schematic view showing the distribution of the second adjustment tooth.
[0032] 图 19是第二调节齿牙结构示意图。  [0032] FIG. 19 is a schematic view showing the structure of a second adjustment tooth.
[0033] 图 20是第一调节齿牙和第二调节齿牙工作原理示意图。  [0033] FIG. 20 is a schematic view showing the working principle of the first adjustment tooth and the second adjustment tooth.
[0034] 图 21是齿轮轴转速变化示意图。  21 is a schematic diagram showing changes in the rotational speed of a gear shaft.
[0035] 图中标号名称： 1、 驱动电机； 2、 电机支撑； 3、 齿环支撑； 4、 固定板； 5、 传动轴； 6、 驱动弹簧； 7、 传动齿轮； 8、 弹簧固定圆盘； 9、 内齿环； 10、 弧 形连接板； 11、 齿轮轴； 12、 连接圆盘； 13、 调节 U形环； 14、 调节螺纹轮； 15 、 调节把手； 16、 第一调节齿牙； 17、 弹簧固定板； 18、 压缩弹簧； 19、 重块 ； 20、 第一离心槽； 21、 拉伸弹簧； 22、 齿牙连接板； 23、 第二调节齿牙； 24 、 第二离心槽； 25、 第二齿牙槽； 26、 第一齿牙槽； 27、 连接杆。 [0035] In the figure, the label name: 1, the drive motor; 2, the motor support; 3, the ring support; 4, the fixed plate; 5, the drive shaft; 6, the drive spring; 7, the transmission gear; 8, the spring fixed disc 9, internal gear ring; 10, curved connecting plate; 11, gear shaft; 12, connecting disc; 13, adjusting U-ring; 14, adjusting thread wheel; Adjusting the handle; 16, the first adjusting tooth; 17, the spring fixing plate; 18, the compression spring; 19, the weight; 20, the first centrifugal groove; 21, the tension spring; 22, the tooth connecting plate; The second adjusting tooth; 24, the second centrifugal groove; 25, the second tooth groove; 26, the first tooth groove; 27, the connecting rod.
实施该发明的最佳实施例 BEST MODE FOR CARRYING OUT THE INVENTION
本发明的最佳实施方式 BEST MODE FOR CARRYING OUT THE INVENTION
如图 1、 2所示， 它包括驱动电机 1、 电机支撑 2、 齿环支撑 3、 固定板 4、 传动轴 5、 驱动弹簧 6、 传动齿轮 7、 弹簧固定圆盘 8、 内齿环 9、 弧形连接板 10、 齿轮轴 11、 连接圆盘 12、 调节 U形环 13、 调节螺纹轮 14、 调节把手 15、 第一调节齿牙 16 、 弹簧固定板 17、 压缩弹簧 18、 重块 19、 第一离心槽 20、 拉伸弹簧 21、 齿牙连 接板 22、 第二调节齿牙 23、 第二离心槽 24、 第二齿牙槽 25、 第一齿牙槽 26、 连 接杆 27， 其中如图 1所示， 驱动电机 1通过电机支撑 2安装在固定板 4上； 如图 3所 示， 传动轴 5与驱动电机 1输出轴连接； 如图 14所示， 传动轴 5的外圆面上沿轴线 方向上均匀地幵有许多第一齿牙槽 26; 第一齿牙槽 26的下侧幵有第一离心槽 20 ， 且每个第一齿牙槽 26均与第一离心槽 20相通； 第一离心槽 20经过传动轴 5的中 心； 如图 13所示， 传动轴 5的外圆面上沿轴线方向上均匀地幵有许多第二齿牙槽 25； 第二齿牙槽 25的下侧幵有第二离心槽 24， 且每个第二齿牙槽 25与第二离心 槽 24均相通； 如图 15所示， 第一齿牙槽 26与相邻的第二齿牙槽 25之间成九十度 夹角； 每个第一齿牙槽 26内所安装结构完全相同； 对于其中任意一个， 如图 11 所示， 弹簧固定板 17安装在第一齿牙槽 26内靠近传动轴 5轴线的一端； 第一调节 齿牙 16安装在第一齿牙槽 26内远离传动轴 5轴线的一端； 如图 17所示， 连接杆 27 的一端安装在第一调节齿牙 16上； 连接杆 27的另一端穿过弹簧固定板 17位于第 一离心槽 20内； 弹簧固定板 17与第一调节齿牙 16之间安装有压缩弹簧 18; 如图 1 6所示， 重块 19安装在连接杆 27的下端， 且重块 19位于第一离心槽 20内； 重块 19 和第一调节齿牙 16分别位于传动轴 5相互对称的两侧； 如图 12所示， 每个第二齿 牙槽 25内所安装结构完全相同； 对于其中任意一个， 如图 19所示， 第二调节齿 牙 23安装在第二齿牙槽 25内远离传动轴 5轴线的一端； 如图 18所示， 齿牙连接板 22安装在第二调节齿牙 23的下端， 且齿牙连接板 22位于第二离心槽 24内； 齿牙 连接板 22与第二离心槽 24之间均匀地安装有许多拉伸弹簧 21 ; 如图 4所示， 传动 轴 5的两端分别安装有一个弹簧固定圆盘 8， 且两个弹簧固定圆盘 8发分别位于第 一调节齿牙 16和第二调节齿牙 23的两侧； 如图 10所示， 驱动弹簧 6的两端分别安 装在两个弹簧固定圆盘 8上， 如图 9所示， 且驱动弹簧 6嵌套于传动轴 5上； 驱动 弹簧 6分别与安装在传动轴 5上的第一调节齿牙 16和第二调节齿牙 23配合； 如图 7 所示， 调节螺纹轮 14的外圆面上具有外螺纹； 调节螺纹轮 14的内圆面上具有内 螺纹； 调节螺纹轮 14安装在传动轴 5上， 且调节螺纹轮 14位于两个弹簧固定圆盘 8之间； 调节螺纹轮 14上的内螺纹与驱动弹簧 6配合； 调节 U形环 13的一端安装在 有调节把手 15; 调节 U形环 13上安装有调节把手 15的一端安装在传动轴 5上； 调 节 U形环 13的另一端安装在调节螺纹轮 14远离驱动电机 1一侧的端面上； 如图 6所 示， 内齿环 9通过齿环支撑 3安装在固定板 4上， 且内齿环 9嵌套与调节螺纹轮 14 外侧； 内齿环 9与调节螺纹轮 14上的外螺纹配合； 如图 5所示， 内齿环 9远离驱动 电机 1的一侧端面上对称地安装有两个弧形连接板 10; 连接圆盘 12安装在传动轴 5上， 且连接圆盘 12与两个弧形连接板 10连接； 如图 8所示， 齿轮轴 11的一端安 装在靠近驱动电机 1一侧的固定板 4上； 传动齿轮 7安装在齿轮轴 11的另一端； 如 图 9所示， 传动齿轮 7于驱动弹簧 6啮合。 本发明的实施方式 As shown in FIG. 1 and 2, it comprises a driving motor 1, a motor support 2, a ring gear support 3, a fixing plate 4, a transmission shaft 5, a driving spring 6, a transmission gear 7, a spring fixing disc 8, an internal gear ring 9, Curved connecting plate 10, gear shaft 11, connecting disc 12, adjusting U-ring 13, adjusting thread wheel 14, adjusting handle 15, first adjusting tooth 16, spring fixing plate 17, compression spring 18, weight 19, a first centrifugal groove 20, a tension spring 21, a tooth connecting plate 22, a second adjusting tooth 23, a second centrifugal groove 24, a second tooth groove 25, a first tooth groove 26, and a connecting rod 27, wherein As shown in Fig. 1, the drive motor 1 is mounted on the fixed plate 4 via the motor support 2; as shown in Fig. 3, the drive shaft 5 is coupled to the output shaft of the drive motor 1; as shown in Fig. 14, the outer circumference of the drive shaft 5 A plurality of first tooth grooves 26 are evenly distributed along the axial direction; a lower side of the first tooth groove 26 has a first centrifugal groove 20, and each of the first tooth grooves 26 communicates with the first centrifugal groove 20. The first centrifugal groove 20 passes through the center of the transmission shaft 5; as shown in Fig. 13, the outer circumferential surface of the transmission shaft 5 is along the axial direction The mantle has a plurality of second tooth grooves 25; the lower side of the second tooth groove 25 has a second centrifugal groove 24, and each of the second tooth grooves 25 communicates with the second centrifugal groove 24; It is shown that the first tooth groove 26 and the adjacent second tooth groove 25 form an angle of ninety degrees; the structure of each of the first tooth grooves 26 is exactly the same; for any one of them, as shown in FIG. 11 As shown, the spring retaining plate 17 is mounted in one end of the first tooth groove 26 near the axis of the drive shaft 5; the first adjusting tooth 16 is mounted at one end of the first tooth groove 26 away from the axis of the drive shaft 5; As shown, one end of the connecting rod 27 is mounted on the first adjusting tooth 16; the other end of the connecting rod 27 is located in the first centrifugal groove 20 through the spring fixing plate 17; the spring fixing plate 17 and the first adjusting tooth 16 A compression spring 18 is mounted therebetween; as shown in Fig. 16, the weight 19 is mounted at the lower end of the connecting rod 27, and the weight 19 is located in the first centrifugal groove 20; the weight 19 and the first adjusting tooth 16 are respectively located in the transmission The two sides of the shaft 5 are symmetrical to each other; as shown in FIG. 12, the structure installed in each of the second tooth grooves 25 is identical; In one embodiment, as shown in FIG. 19, the second adjusting tooth 23 is mounted at one end of the second tooth groove 25 away from the axis of the drive shaft 5; as shown in FIG. 18, the tooth connecting plate 22 is mounted on the second adjusting tooth. The lower end of the 23, and the tooth connecting plate 22 is located in the second centrifugal groove 24; a plurality of tension springs 21 are evenly mounted between the tooth connecting plate 22 and the second centrifugal groove 24; as shown in Fig. 4, the transmission A spring fixing disc 8 is respectively mounted on both ends of the shaft 5, and two spring fixing discs 8 are respectively located on two sides of the first adjusting tooth 16 and the second adjusting tooth 23; as shown in FIG. The two ends of the spring 6 are respectively mounted on the two spring fixing discs 8, as shown in Fig. 9, and the driving spring 6 is nested on the transmission shaft 5; the driving springs 6 are respectively adjusted with the first adjustment mounted on the transmission shaft 5 The tooth 16 and the second adjusting tooth 23 are matched; as shown in FIG. 7, the outer surface of the adjusting thread wheel 14 has an external thread; the inner circular surface of the adjusting thread wheel 14 has an internal thread; the adjusting thread wheel 14 is mounted on The transmission shaft 5 is disposed between the two spring fixing discs 8; the internal thread on the adjusting thread wheel 14 is engaged with the driving spring 6; one end of the adjusting U-ring 13 is mounted on the adjusting handle 15; One end of the U-ring 13 on which the adjustment handle 15 is mounted is mounted on the transmission shaft 5; the other end of the adjustment U-ring 13 is mounted on the end surface of the adjustment threaded wheel 14 away from the side of the drive motor 1; The ring gear 9 is mounted on the fixed plate 4 via the ring gear support 3, and the inner ring gear 9 is nested Adjusting the outer side of the threaded wheel 14; the inner ring gear 9 is engaged with the external thread on the adjusting threaded wheel 14; as shown in Fig. 5, two curved connecting plates are symmetrically mounted on the side end surface of the inner ring gear 9 away from the driving motor 1 10; the connecting disc 12 is mounted on the transmission shaft 5, and the connecting disc 12 is connected to the two curved connecting plates 10; as shown in Fig. 8, one end of the gear shaft 11 is mounted on the fixing plate near the side of the driving motor 1. 4; the transmission gear 7 is mounted on the other end of the gear shaft 11; as shown in Fig. 9, the transmission gear 7 is engaged with the drive spring 6. Embodiments of the invention
[0037] 上述第二调节齿牙 23的齿牙倾斜角大于第一调节齿牙 16的齿牙倾斜角。  [0037] The tooth inclination angle of the second adjustment tooth 23 is larger than the tooth inclination angle of the first adjustment tooth 16.
[0038] 上述调节螺纹轮 14对驱动弹簧 6有限位作用。 [0038] The adjustment thread wheel 14 acts on the drive spring 6 in a limited position.
[0039] 上述在使用之前可以通过调节调节把手 15来控制调节螺纹轮 14与驱动弹簧 6的 相对位置； 从而控制驱动弹簧 6的初始弹性性能。  [0039] The relative position of the adjustment screw wheel 14 to the drive spring 6 can be controlled by adjusting the adjustment knob 15 before use; thereby controlling the initial elastic performance of the drive spring 6.
[0040] 上述在初始状态下第一调节齿牙 16在压缩弹簧 18和重块 19的共同作用下处于传 动轴 5外侧的高度小于传动齿轮 7和驱动弹簧 6啮合吋， 传动齿轮 7与传动轴 5外圆 面之间的间隙； 初始状态下第一调节齿牙 16在压缩弹簧 18和重块 19的共同作用 下处于传动轴 5外侧的高度小于调节螺纹轮 14和驱动弹簧 6啮合吋， 调节螺纹轮 1 4与传动轴 5外圆面之间的间隙。  [0040] In the initial state, the first adjusting tooth 16 is disposed outside the transmission shaft 5 under the cooperation of the compression spring 18 and the weight 19, and the transmission gear 7 and the transmission shaft are smaller than the transmission gear 7 and the driving spring 6 are engaged. 5 gap between the outer circular faces; in the initial state, the first adjusting tooth 16 is lower than the adjusting screw wheel 14 and the driving spring 6 by the cooperation of the compression spring 18 and the weight 19 at a height smaller than the adjusting screw wheel 14 and the driving spring 6 A gap between the threaded wheel 14 and the outer circular surface of the drive shaft 5.
[0041] 上述在工作状态下第二调节齿牙 23在拉伸弹簧 21和离心力的共同作用下处于传 动轴 5外侧的最大高度小于传动齿轮 7和驱动弹簧 6啮合吋， 传动齿轮 7与传动轴 5 外圆面之间的间隙； 在工作状态下第二调节齿牙 23在拉伸弹簧 21和离心力的作 用下处于传动轴 5外侧的最大高度小于调节螺纹轮 14和驱动弹簧 6啮合吋， 调节 螺纹轮 14与传动轴 5外圆面之间的间隙。 [0041] In the above working state, the second adjusting tooth 23 has a maximum height outside the transmission shaft 5 under the combined action of the tension spring 21 and the centrifugal force, less than the meshing of the transmission gear 7 and the driving spring 6, the transmission gear 7 and the transmission shaft 5 The gap between the outer circular faces; in the working state, the maximum height of the second adjusting tooth 23 outside the transmission shaft 5 under the action of the tension spring 21 and the centrifugal force is smaller than the engagement between the adjusting screw wheel 14 and the driving spring 6, and the adjusting thread The gap between the wheel 14 and the outer circular surface of the drive shaft 5.
[0042] 综上所述： 本发明设计的轮椅通过蜗杆传动机构可以将驱动电机 1工作吋的高 转速转化为较低的转速； 从而驱动轮椅工作； 同吋通过自动调节可以在人们因 为错误操作打幵驱动电机 1幵关吋能够有足够的吋间关闭或者调整。  [0042] In summary: the wheelchair designed by the present invention can convert the high speed of the working motor 1 to a lower speed through the worm transmission mechanism; thereby driving the wheelchair to work; the same can be operated by mistakes The snoring drive motor 1 can have enough turn-off or adjustment.
[0043] 本发明中传动轴 5与驱动电机 1输出轴连接； 传动轴 5的外圆面上沿轴线方向上 均匀地幵有许多第一齿牙槽 26; 第一齿牙槽 26的下侧幵有第一离心槽 20， 且每 个第一齿牙槽 26均与第一离心槽 20相通； 第一离心槽 20经过传动轴 5的中心； 传 动轴 5的外圆面上沿轴线方向上均匀地幵有许多第二齿牙槽 25 ; 第二齿牙槽 25的 下侧幵有第二离心槽 24， 且每个第二齿牙槽 25与第二离心槽 24均相通； 第一齿 牙槽 26与相邻的第二齿牙槽 25之间成九十度夹角； 每个第一齿牙槽 26内所安装 结构完全相同； 对于其中任意一个， 弹簧固定板 17安装在第一齿牙槽 26内靠近 传动轴 5轴线的一端； 第一调节齿牙 16安装在第一齿牙槽 26内远离传动轴 5轴线 的一端； 连接杆 27的一端安装在第一调节齿牙 16上； 连接杆 27的另一端穿过弹 簧固定板 17位于第一离心槽 20内； 弹簧固定板 17与第一调节齿牙 16之间安装有 压缩弹簧 18 ; 重块 19安装在连接杆 27的下端， 且重块 19位于第一离心槽 20内； 重块 19和第一调节齿牙 16分别位于传动轴 5相互对称的两侧； 每个第二齿牙槽 25 内所安装结构完全相同； 对于其中任意一个， 第二调节齿牙 23安装在第二齿牙 槽 25内远离传动轴 5轴线的一端； 齿牙连接板 22安装在第二调节齿牙 23的下端， 且齿牙连接板 22位于第二离心槽 24内； 齿牙连接板 22与第二离心槽 24之间均匀 地安装有许多拉伸弹簧 21 ; 传动轴 5的两端分别安装有一个弹簧固定圆盘 8， 且 两个弹簧固定圆盘 8分别位于第一调节齿牙 16和第二调节齿牙 23的两侧； 驱动弹 簧 6的两端分别安装在两个弹簧固定圆盘 8上， 且驱动弹簧 6嵌套于传动轴 5上； 驱动弹簧 6分别与安装在传动轴 5上的第一调节齿牙 16和第二调节齿牙 23配合； 调节螺纹轮 14的外圆面上具有外螺纹； 调节螺纹轮 14的内圆面上具有内螺纹； 调节螺纹轮 14安装在传动轴 5上， 且调节螺纹轮 14位于两个弹簧固定圆盘 8之间 ； 调节螺纹轮 14上的内螺纹与驱动弹簧 6配合； 调节 U形环 13的一端安装在有调 节把手 15; 调节 U形环 13上安装有调节把手 15的一端安装在传动轴 5上； 调节 U形 环 13的另一端安装在调节螺纹轮 14远离驱动电机 1一侧的端面上； 内齿环 9通过 齿环支撑 3安装在固定板 4上， 且内齿环 9嵌套与调节螺纹轮 14外侧； 内齿环 9与 调节螺纹轮 14上的外螺纹配合； 内齿环 9远离驱动电机 1的一侧端面上对称地安 装有两个弧形连接板 10; 连接圆盘 12安装在传动轴 5上， 且连接圆盘 12与两个弧 形连接板 10连接； 齿轮轴 11的一端安装在靠近驱动电机 1一侧的固定板 4上； 传 动齿轮 7安装在齿轮轴 11的另一端； 传动齿轮 7于驱动弹簧 6啮合； 本发明中第二 调节齿牙 23的齿牙倾斜角大于第一调节齿牙 16的齿牙倾斜角。 本发明中调节螺 纹轮 14对驱动弹簧 6有限位作用。 本发明中在使用之前可以通过调节调节把手 15 来控制调节螺纹轮 14与驱动弹簧 6的相对位置； 从而控制驱动弹簧 6的初始弹性 性能。 在初始状态下第一调节齿牙 16在压缩弹簧 18和重块 19的共同作用下处于 传动轴 5外侧的高度小于传动齿轮 7和驱动弹簧 6啮合吋， 传动齿轮 7与传动轴 5外 圆面之间的间隙； 初始状态下第一调节齿牙 16在压缩弹簧 18和重块 19的共同作 用下处于传动轴 5外侧的高度小于调节螺纹轮 14和驱动弹簧 6啮合吋， 调节螺纹 轮 14与传动轴 5外圆面之间的间隙。 在工作状态下第二调节齿牙 23在拉伸弹簧 21 和离心力的共同作用下处于传动轴 5外侧的最大高度小于传动齿轮 7和驱动弹簧 6 啮合吋， 传动齿轮 7与传动轴 5外圆面之间的间隙； 在工作状态下第二调节齿牙 2 3在拉伸弹簧 21和离心力的作用下处于传动轴 5外侧的最大高度小于调节螺纹轮 1 4和驱动弹簧 6啮合吋， 调节螺纹轮 14与传动轴 5外圆面之间的间隙。 人们使用本 发明设计的轮椅， 在使用之前人们通过转动调节把手 15; 通过调节把手 15带动 调节 U形环 13转动； 调节 U形环 13带动调节螺纹轮 14转动； 由于此吋驱动电机 1处 于停机状态； 即内齿环 9处于静止状态； 内齿环 9与调节螺纹轮 14上的外螺纹配 合； 所以当调节螺纹轮 14转动就会使得调节螺纹轮 14沿着调节螺纹轮 14轴线移 动， 即可以通过调节调节把手 15来控制调节螺纹轮 14与驱动弹簧 6的相对位置； 从而控制驱动弹簧 6的初始弹性性能。 进而控制驱动弹簧 6所能传递的最大扭矩 ； 在人们调节好螺纹的初始弹性性能吋； 控制驱动电机 1幵始工作； 驱动电机 1 带动传动轴 5转动； 传动轴 5带动两个弹簧固定圆盘 8转动； 两个弹簧固定圆盘 8 带动驱动弹簧 6转动； 驱动弹簧 6转动带动传动齿轮 7转动； 传动齿轮 7带动齿轮 轴 11转动； 通过齿轮轴 11可以将旋转力传递到轮椅的轮胎上； 进而通过轮胎转 动带动轮椅工作； 本发明中当驱动传动齿轮 7转动的驱动弹簧 6的初始弹性性能 确定后； 驱动电机 1工作； 在驱动电机 1工作吋， 驱动电机 1带动传动轴 5转动的 速度会逐渐提高， 由于重块 19安装在连接杆 27的下端， 且重块 19位于第一离心 槽 20内； 重块 19和第一调节齿牙 16分别位于传动轴 5相互对称的两侧； 所以在离 心作用下， 重块 19会带动连接杆 27向远离第一调节齿牙 16的一侧移动； 连接杆 2 7带动第一调节齿牙 16向传动轴 5的内侧移动； 而第二调节齿牙 23在离心力的作 用下逐渐向传动轴 5的外侧移动； 第一调节齿牙 16在初始移动过程中第一调节齿 牙 16对驱动弹簧 6的束缚力会逐渐减小； 而此吋第二调节齿牙 23还未移动出传动 轴 5 ; 如图 20 (a-b) 段所示， 所以此吋驱动弹簧 6所能传递的扭矩会不断减小； 当第一调节齿牙 16快要完全移动到传动轴 5内侧吋， 第二调节齿牙 23也刚好移出 传动轴 5 ; 此吋第一调节齿牙 16和第二调节齿牙 23对驱动弹簧 6的束缚力最小； 如图 20 (b-c) 段所示， 即驱动弹簧 6所传递的扭矩最小； 而当第一调节齿牙 16完 全移动到传动轴 5内侧吋， 第二调节齿牙 23移动出传动轴 5的高度也逐渐变大； 此吋第二调节齿牙 23对驱动弹簧 6的束缚力逐渐加大； 如图 20 (c-d) 段所示， 即 驱动弹簧 6所能传递的扭矩也不断加大； 当第二调节齿牙 23完全移动出传动轴 5 吋； 驱动弹簧 6所传递的扭矩也达到最大稳定状态； 如图 21所示， 即传动齿轮 7 的转动速度也达到稳定状态。 人们在使用轮椅吋， 当人们因为错误操作而将驱 动电机 1幵关打幵吋； 驱动电机 1就会工作； 轮胎就会转动； 而此吋人们下意识 就会去握紧轮椅轮胎； 如果轮胎的转动扭矩较大吋， 就有可能将手臂扭伤； 所 以本发明中通过控制第一调节齿牙 16和第二调节齿牙 23对驱动弹簧 6的束缚力； 使得人们在握紧轮胎吋； 第一调节齿牙 16和第二调节齿牙 23对驱动弹簧 6的束缚 力最小； 即驱动弹簧 6所传递的扭矩最小； 即轮椅轮胎的旋转扭矩最小； 此吋当 人们握紧轮椅轮胎吋； 轮胎就会停止转动； 而在轮胎停止转动后传动齿轮 7就会 挤压驱动弹簧 6; 使得驱动弹簧 6压缩； 而当弹簧压缩到极限吋； 驱动弹簧 6就会 再次带动传动齿轮 7转动； 但是在此过程中人们已经调整好或者已经将驱动电机 1关闭； 所以本发明中可以通过控制驱动弹簧 6的弹性来延迟当传动齿轮 7承载力 突然加大吋驱动弹簧 6再次驱动传动齿轮 7转动的吋间； 同吋通过驱动弹簧 6的弹 性可以吸收一部分传动齿轮 7对传动轴 5的冲击； 即保护了传动轴 5 ; 保护了驱动 电机 1。 本发明中在初始状态下调节驱动弹簧 6的弹性性能吋， 在调节螺纹轮 14 的转动过程中， 调节螺纹轮 14的内螺纹正好与驱动弹簧 6啮合转动； 所以调节螺 纹轮 14在移动过程中不会与驱动弹簧 6发生干涉； 本发明中由于第二调节齿牙 23 的齿牙倾斜角大于第一调节齿牙 16的齿牙倾斜角； 即第二调节齿牙 23在移动到 传动轴 5最外侧吋对驱动弹簧 6的束缚力大于第一调节齿牙 16在初始状态吋对驱 动弹簧 6的束缚力； 即驱动弹簧 6初始驱动传动齿轮 7的扭矩小于在传动齿轮 7稳 定后驱动弹簧 6驱动传动齿轮 7的扭矩。 本发明中由于重块 19是作为一个整体安 装在传动轴 5上所安装在连接杆 27下侧； 所以当重块 19在移动过程中重块 19会带 动所有的连接杆 27—起移动； 即带动所有的第一调节齿牙 16—起移动； 所以传 动轴 5上所有的第一调节齿牙 16对驱动弹簧 6的束缚力是同步变化； 即驱动弹簧 6 在传递扭矩吋， 驱动弹簧 6上对传动齿轮 7起作用的部分通过整体来承受传动齿 轮 7在转动过程中对驱动弹簧 6的挤压力； 本发明中由于齿牙连接板 22与传动轴 5 上的所有第一调节齿牙 16连接在一起； 所以在离心作用下传动轴 5上的所有第二 调节齿牙 23会一起移动； 即传动轴 5上第二调节齿牙 23对驱动弹簧 6的束缚力是 同步变化； 即驱动弹簧 6在传递扭矩吋， 驱动弹簧 6上对传动齿轮 7起作用的部分 通过整体来承受传动齿轮 7在转动过程中对驱动弹簧 6的挤压力。 [0043] In the present invention, the transmission shaft 5 is coupled to the output shaft of the drive motor 1; the outer circular surface of the transmission shaft 5 is evenly encased with a plurality of first tooth grooves 26 in the axial direction; the lower side of the first tooth groove 26 The first centrifugal groove 20 is disposed, and each of the first tooth grooves 26 communicates with the first centrifugal groove 20; the first centrifugal groove 20 passes through the center of the transmission shaft 5; the outer circular surface of the transmission shaft 5 is along the axial direction There are a plurality of second tooth grooves 25 uniformly; the second tooth groove 25 has a second centrifugal groove 24 on the lower side thereof, and each of the second tooth grooves 25 communicates with the second centrifugal groove 24; The socket 26 is at an angle of ninety degrees with the adjacent second tooth groove 25; the structure of each of the first tooth grooves 26 is completely the same; for any one of them, the spring fixing plate 17 is installed at the first One end of the tooth groove 26 near the axis of the drive shaft 5; the first adjusting tooth 16 is mounted at one end of the first tooth groove 26 away from the axis of the drive shaft 5; one end of the connecting rod 27 is mounted on the first adjusting tooth 16 The other end of the connecting rod 27 is located in the first centrifugal groove 20 through the spring fixing plate 17; the spring fixing plate 17 and the first adjusting tooth 16 A compression spring 18 is mounted therebetween; a weight 19 is mounted at the lower end of the connecting rod 27, and the weight 19 is located in the first centrifugal groove 20; the weight 19 and the first adjusting tooth 16 are respectively located on opposite sides of the transmission shaft 5 The structure of each of the second tooth grooves 25 is identical; for any one of them, the second adjusting tooth 23 is mounted at one end of the second tooth groove 25 away from the axis of the drive shaft 5; At the lower end of the second adjusting tooth 23, and the tooth connecting plate 22 is located in the second centrifugal groove 24; a plurality of tension springs 21 are evenly mounted between the tooth connecting plate 22 and the second centrifugal groove 24; Two spring fixing discs 8 are respectively mounted on the two ends, and two spring fixing discs 8 are respectively located on two sides of the first adjusting tooth 16 and the second adjusting tooth 23; the two ends of the driving spring 6 are respectively installed in two The springs are fixed on the disc 8 and the drive springs 6 are nested on the drive shaft 5; the drive springs 6 are respectively engaged with the first adjustment teeth 16 and the second adjustment teeth 23 mounted on the transmission shaft 5; 14 has an external thread on the outer circumference; adjusts the inner circle of the threaded wheel 14 The internal thread is provided; the adjusting threaded wheel 14 is mounted on the transmission shaft 5, and the adjusting threaded wheel 14 is located between the two spring fixing discs 8; the internal thread on the adjusting threaded wheel 14 is engaged with the driving spring 6; One end of 13 is installed in a tone a handle 15; an end of the adjustment U-ring 13 on which the adjustment handle 15 is mounted is mounted on the transmission shaft 5; the other end of the adjustment U-ring 13 is mounted on an end surface of the adjustment threaded wheel 14 away from the drive motor 1; The ring 9 is mounted on the fixed plate 4 via the ring support 3, and the inner ring 9 is nested outside the adjusting threaded wheel 14; the inner ring 9 is mated with the external thread on the adjusting threaded wheel 14; the inner ring 9 is remote from the drive motor Two curved connecting plates 10 are symmetrically mounted on one end surface of one; the connecting disc 12 is mounted on the transmission shaft 5, and the connecting disc 12 is connected to the two curved connecting plates 10; one end of the gear shaft 11 is mounted On the fixed plate 4 on the side close to the drive motor 1; the drive gear 7 is mounted on the other end of the gear shaft 11; the drive gear 7 is meshed with the drive spring 6; in the present invention, the pitch angle of the second adjustment tooth 23 is larger than One adjusts the tooth inclination angle of the tooth 16. In the present invention, the adjustment screw wheel 14 acts on the drive spring 6 in a limited position. In the present invention, the relative position of the adjustment screw wheel 14 and the drive spring 6 can be controlled by adjusting the adjustment knob 15 before use; thereby controlling the initial elastic performance of the drive spring 6. In the initial state, the height of the first adjusting tooth 16 outside the transmission shaft 5 under the cooperation of the compression spring 18 and the weight 19 is smaller than the engagement of the transmission gear 7 and the driving spring 6, and the outer surface of the transmission gear 7 and the transmission shaft 5 The gap between the first adjusting teeth 16 in the initial state under the action of the compression spring 18 and the weight 19 is less than the engagement of the adjusting screw wheel 14 and the driving spring 6 , and the adjusting thread wheel 14 is The gap between the outer circular faces of the drive shaft 5. In the working state, the second adjusting tooth 23 has a maximum height outside the transmission shaft 5 under the combined action of the tension spring 21 and the centrifugal force, less than the meshing of the transmission gear 7 and the driving spring 6, and the outer surface of the transmission gear 7 and the transmission shaft 5 The gap between the second adjusting teeth 2 3 under the action of the tension spring 21 and the centrifugal force is smaller than the adjustment of the threaded wheel 14 and the driving spring 6 in the working state, and the adjusting thread wheel 14 and the gap between the outer circumference of the drive shaft 5. The wheelchair designed by the present invention is rotated by the adjusting handle 15 before use; the adjusting U-ring 13 is rotated by the adjusting handle 15; the adjusting U-shaped ring 13 drives the adjusting threaded wheel 14 to rotate; State; that is, the inner ring 9 is in a stationary state; the inner ring 9 is engaged with the external thread on the adjusting threaded wheel 14; therefore, when the adjusting threaded wheel 14 rotates, the adjusting threaded wheel 14 moves along the axis of the adjusting threaded wheel 14, ie The relative position of the adjustment screw wheel 14 to the drive spring 6 can be controlled by adjusting the adjustment knob 15; thereby controlling the initial elastic performance of the drive spring 6. In turn, the maximum torque that can be transmitted by the drive spring 6 is controlled; the initial elastic performance of the thread is adjusted; the control drive motor 1 starts to work; the drive motor 1 drives the drive shaft 5 to rotate; the drive shaft 5 drives the two spring-mounted discs. 8 rotation; two spring fixed discs 8 drive the drive spring 6 to rotate; the drive spring 6 rotates to drive the transmission gear 7 to rotate; the transmission gear 7 drives the gear The shaft 11 is rotated; the rotational force can be transmitted to the tire of the wheelchair through the gear shaft 11; and the wheelchair is driven by the rotation of the tire; in the present invention, the initial elastic performance of the drive spring 6 when the drive transmission gear 7 rotates is determined; After the driving motor 1 is operated, the speed at which the driving motor 1 drives the driving shaft 5 to rotate is gradually increased, since the weight 19 is mounted at the lower end of the connecting rod 27, and the weight 19 is located in the first centrifugal groove 20; And the first adjusting teeth 16 are respectively located on opposite sides of the transmission shaft 5; therefore, under the action of centrifugation, the weight 19 will drive the connecting rod 27 to move away from the side of the first adjusting tooth 16; the connecting rod 27 drives The first adjusting tooth 16 moves toward the inner side of the propeller shaft 5; and the second adjusting tooth 23 gradually moves to the outside of the propeller shaft 5 under the action of centrifugal force; the first adjusting tooth 16 is the first adjusting tooth during the initial movement The binding force of the pair of teeth 16 to the drive spring 6 is gradually reduced; and the second adjustment tooth 23 has not moved out of the transmission shaft 5; as shown in Fig. 20 (ab), the 吋 drive spring 6 can transmit Torque Continuously decreasing; when the first adjustment tooth 16 is about to completely move to the inner side of the transmission shaft 5, the second adjustment tooth 23 also just moves out of the transmission shaft 5; then the first adjustment tooth 16 and the second adjustment tooth 23 pair The binding force of the driving spring 6 is minimum; as shown in the paragraph (bc) of Fig. 20, that is, the torque transmitted by the driving spring 6 is the smallest; and when the first adjusting tooth 16 is completely moved to the inner side of the transmission shaft 5, the second adjusting tooth 23 The height of the moving drive shaft 5 is also gradually increased; the binding force of the second adjusting tooth 23 to the driving spring 6 is gradually increased; as shown in Fig. 20 (cd), that is, the driving spring 6 can transmit The torque is also continuously increased; when the second adjusting tooth 23 completely moves out of the transmission shaft 5 吋; the torque transmitted by the driving spring 6 also reaches the maximum stable state; as shown in Fig. 21, the rotational speed of the transmission gear 7 is also stabilized. status. People use wheelchairs, when people drive the motor 1 to shut down because of wrong operation; the drive motor 1 will work; the tire will turn; and the people will subconsciously grip the wheelchair tires; When the turning torque is large, it is possible to sprain the arm; therefore, in the present invention, by controlling the binding force of the first adjusting tooth 16 and the second adjusting tooth 23 to the driving spring 6, the gripping of the tire is performed; The tooth 16 and the second adjustment tooth 23 have the least binding force to the drive spring 6; that is, the torque transmitted by the drive spring 6 is the smallest; that is, the torque of the wheelchair tire is the smallest; this is when the person grips the wheelchair tire; Stopping the rotation; and after the tire stops rotating, the transmission gear 7 will squeeze the drive spring 6; so that the drive spring 6 is compressed; and when the spring is compressed to the limit 吋; the drive spring 6 will again drive the transmission gear 7 to rotate; The driver has adjusted or has turned the drive motor 1 off; therefore, in the present invention, the load of the transmission gear 7 can be delayed by controlling the elasticity of the drive spring 6. However, to increase the drive spring 6 inch driven again to rotate the transmission gear between 7 inches; with the elastic drive spring inch by 6 The force can absorb the impact of a part of the transmission gear 7 on the transmission shaft 5; that is, the transmission shaft 5 is protected; and the drive motor 1 is protected. In the present invention, the elastic performance of the drive spring 6 is adjusted in the initial state. During the rotation of the adjustment threaded wheel 14, the internal thread of the adjustment threaded wheel 14 is just engaged with the drive spring 6; therefore, the adjustment of the threaded wheel 14 during the movement There is no interference with the drive spring 6; in the present invention, the tooth inclination angle of the second adjustment tooth 23 is larger than the tooth inclination angle of the first adjustment tooth 16; that is, the second adjustment tooth 23 is moved to the transmission shaft 5 The binding force of the outermost jaw to the drive spring 6 is greater than the binding force of the first adjustment tooth 16 to the drive spring 6 in the initial state; that is, the torque of the drive spring 6 initially driving the transmission gear 7 is smaller than the drive spring 6 after the transmission gear 7 is stabilized. The torque of the drive transmission gear 7 is driven. In the present invention, since the weight 19 is mounted as a whole on the drive shaft 5 and mounted on the lower side of the connecting rod 27; therefore, when the weight 19 is moved, the weight 19 will drive all the connecting rods 27 to move; All the first adjusting teeth 16 are driven to move; therefore, the binding force of all the first adjusting teeth 16 on the driving shaft 5 to the driving spring 6 is synchronously changed; that is, the driving spring 6 transmits the torque 吋, the driving spring 6 The portion that acts on the transmission gear 7 as a whole receives the pressing force of the transmission gear 7 against the drive spring 6 during the rotation; in the present invention, all of the first adjustment teeth 16 on the toothed connecting plate 22 and the transmission shaft 5 are present. Connected together; therefore, all the second adjusting teeth 23 on the transmission shaft 5 will move together under the centrifugal action; that is, the binding force of the second adjusting teeth 23 on the driving shaft 5 to the driving spring 6 is synchronously changed; that is, the driving spring 6 At the transmission torque 吋, the portion of the drive spring 6 that acts on the transmission gear 7 as a whole receives the pressing force of the transmission gear 7 against the drive spring 6 during the rotation.
具体实施方式： 人们使用本发明设计的轮椅， 在使用之前人们通过转动调节把 手 15 ; 通过调节把手 15带动调节 U形环 13转动； 调节 U形环 13带动调节螺纹轮 14 转动； 由于此吋驱动电机 1处于停机状态； 即内齿环 9处于静止状态； 内齿环 9与 调节螺纹轮 14上的外螺纹配合； 所以当调节螺纹轮 14转动就会使得调节螺纹轮 1 4沿着调节螺纹轮 14轴线移动， 即可以通过调节调节把手 15来控制调节螺纹轮 14 与驱动弹簧 6的相对位置； 从而控制驱动弹簧 6的初始弹性性能。 进而控制驱动 弹簧 6所能传递的最大扭矩； 在人们调节好螺纹的初始弹性性能吋； 控制驱动电 机 1幵始工作； 驱动电机 1带动传动轴 5转动； 传动轴 5带动两个弹簧固定圆盘 8转 动； 两个弹簧固定圆盘 8带动驱动弹簧 6转动； 驱动弹簧 6转动带动传动齿轮 7转 动； 传动齿轮 7带动齿轮轴 11转动； 通过齿轮轴 11可以将旋转力传递到轮椅的轮 胎上； 进而通过轮胎转动带动轮椅工作。 工业实用性 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS: A wheelchair designed by the present invention is used by a person to rotate the adjusting handle 15 before use; the adjusting knob 15 is used to drive the adjusting U-ring 13 to rotate; the adjusting U-ring 13 drives the adjusting threaded wheel 14 to rotate; The motor 1 is in a stop state; that is, the inner ring gear 9 is in a stationary state; the inner ring gear 9 is engaged with the external thread on the adjusting thread wheel 14; therefore, when the adjusting thread wheel 14 is rotated, the adjusting thread wheel 14 is adjusted along the adjusting thread wheel. The 14 axis moves, i.e., the relative position of the adjustment threaded wheel 14 to the drive spring 6 can be controlled by adjusting the adjustment handle 15; thereby controlling the initial elastic performance of the drive spring 6. In turn, the maximum torque that can be transmitted by the drive spring 6 is controlled; the initial elastic performance of the thread is adjusted; the control drive motor 1 starts to work; the drive motor 1 drives the drive shaft 5 to rotate; the drive shaft 5 drives the two spring-mounted discs. 8 rotation; two spring fixed discs 8 drive the drive spring 6 to rotate; the drive spring 6 rotates to drive the transmission gear 7 to rotate; the transmission gear 7 drives the gear shaft 11 to rotate; through the gear shaft 11 can transmit the rotational force to the tire of the wheelchair; In turn, the wheelchair is driven by the rotation of the tire. Industrial applicability
[0045] 本发明已研发成功， 并已在工业技术领域使用； 故本发明具有工业实用性。  [0045] The present invention has been successfully developed and has been used in the field of industrial technology; therefore, the present invention has industrial applicability.
[0046] 对于本领域技术人员而言， 显然本发明不限于上述示范性实施例的细节， 而且 在不背离本发明的精神或基本特征的情况下， 能够以其他的具体形式实现本发 明。 因此， 无论从哪一点来看， 均应将实施例看作是示范性的， 而且是非限制 性的， 本发明的范围由所附权利要求而不是上述说明限定， 因此旨在将落在权 利要求的等同要件的含义和范围内的所有变化囊括在本发明内。 不应将权利要 求中的任何附图标记视为限制所涉及的权利要求。 The present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the invention is defined by the appended claims All changes in the meaning and scope of equivalent elements are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim.
[0047] 此外， 应当理解， 虽然本说明书按照实施方式加以描述， 但并非每个实施方式 仅包含一个独立的技术方案， 说明书的这种叙述方式仅仅是为清楚起见， 本领 域技术人员应当将说明书作为一个整体， 各实施例中的技术方案也可以经适当 组合， 形成本领域技术人员可以理解的其他实施方式。 In addition, it should be understood that, although the description is described in the embodiments, the embodiments are not intended to be As a whole, the technical solutions in the embodiments may also be combined as appropriate to form other embodiments that can be understood by those skilled in the art.

Claims

权利要求书 Claim
[权利要求 1] 一种用于轮椅的蜗杆传动机构， 其特征在于： 它包括驱动电机、 电机 支撑、 齿环支撑、 固定板、 传动轴、 驱动弹簧、 传动齿轮、 弹簧固定 圆盘、 内齿环、 弧形连接板、 齿轮轴、 连接圆盘、 调节 U形环、 调节 螺纹轮、 调节把手、 第一调节齿牙、 弹簧固定板、 压缩弹簧、 重块、 第一离心槽、 拉伸弹簧、 齿牙连接板、 第二调节齿牙、 第二离心槽、 第二齿牙槽、 第一齿牙槽、 连接杆， 其中驱动电机通过电机支撑安装 在固定板上； 传动轴与驱动电机输出轴连接； 传动轴的外圆面上沿轴 线方向上均匀地幵有许多第一齿牙槽； 第一齿牙槽的下侧幵有第一离 心槽， 且每个第一齿牙槽均与第一离心槽相通； 第一离心槽经过传动 轴的中心； 传动轴的外圆面上沿轴线方向上均匀地幵有许多第二齿牙 槽； 第二齿牙槽的下侧幵有第二离心槽， 且每个第二齿牙槽与第二离 心槽均相通； 第一齿牙槽与相邻的第二齿牙槽之间成九十度夹角； 每 个第一齿牙槽内所安装结构完全相同； 对于其中任意一个， 弹簧固定 板安装在第一齿牙槽内靠近传动轴轴线的一端； 第一调节齿牙安装在 第一齿牙槽内远离传动轴轴线的一端； 连接杆的一端安装在第一调节 齿牙上； 连接杆的另一端穿过弹簧固定板位于第一离心槽内； 弹簧固 定板与第一调节齿牙之间安装有压缩弹簧； 重块安装在连接杆的下端 [Claim 1] A worm gear mechanism for a wheelchair, comprising: a drive motor, a motor support, a ring support, a fixed plate, a drive shaft, a drive spring, a transmission gear, a spring fixed disc, an internal tooth Ring, curved connecting plate, gear shaft, connecting disc, adjusting U-ring, adjusting thread wheel, adjusting handle, first adjusting tooth, spring fixing plate, compression spring, weight, first centrifugal groove, tension spring , a tooth connecting plate, a second adjusting tooth, a second centrifugal groove, a second tooth groove, a first tooth groove, a connecting rod, wherein the driving motor is mounted on the fixing plate through the motor support; the driving shaft and the driving motor output a shaft connection; a plurality of first tooth grooves are evenly distributed along an axial direction of the outer circumference surface of the transmission shaft; a first centrifugal groove is formed on a lower side of the first tooth groove, and each of the first tooth grooves is The first centrifugal groove communicates; the first centrifugal groove passes through the center of the transmission shaft; the outer circular surface of the transmission shaft is evenly distributed with a plurality of second tooth grooves in the axial direction; the lower side of the second tooth groove has the first a centrifugal groove, and each of the second tooth slots is in communication with the second centrifugal groove; the first tooth groove is at an angle of ninety degrees with the adjacent second tooth groove; each of the first tooth grooves The mounting structure is identical; for any one of them, the spring fixing plate is mounted at one end of the first tooth groove near the axis of the transmission shaft; the first adjusting tooth is mounted at one end of the first tooth groove away from the axis of the transmission shaft; One end of the rod is mounted on the first adjusting tooth; the other end of the connecting rod is located in the first centrifugal groove through the spring fixing plate; a compression spring is installed between the spring fixing plate and the first adjusting tooth; Lower end of the rod
， 且重块位于第一离心槽内； 重块和第一调节齿牙分别位于传动轴相 互对称的两侧； 每个第二齿牙槽内所安装结构完全相同； 对于其中任 意一个， 第二调节齿牙安装在第二齿牙槽内远离传动轴轴线的一端； 齿牙连接板安装在第二调节齿牙的下端， 且齿牙连接板位于第二离心 槽内； 齿牙连接板与第二离心槽之间均匀地安装有许多拉伸弹簧； 传 动轴的两端分别安装有一个弹簧固定圆盘， 且两个弹簧固定圆盘发分 别位于第一调节齿牙和第二调节齿牙的两侧； 驱动弹簧的两端分别安 装在两个弹簧固定圆盘上， 且驱动弹簧嵌套于传动轴上； 驱动弹簧分 别与安装在传动轴上的第一调节齿牙和第二调节齿牙配合； 调节螺纹 轮的外圆面上具有外螺纹； 调节螺纹轮的内圆面上具有内螺纹； 调节 螺纹轮安装在传动轴上， 且调节螺纹轮位于两个弹簧固定圆盘之间； 调节螺纹轮上的内螺纹与驱动弹簧配合； 调节 U形环的一端安装在有 调节把手； 调节 U形环上安装有调节把手的一端安装在传动轴上； 调 节 u形环的另一端安装在调节螺纹轮远离驱动电机一侧的端面上； 内 齿环通过齿环支撑安装在固定板上， 且内齿环嵌套与调节螺纹轮外侧 ； 内齿环与调节螺纹轮上的外螺纹配合； 内齿环远离驱动电机的一侧 端面上对称地安装有两个弧形连接板； 连接圆盘安装在传动轴上， 且 连接圆盘与两个弧形连接板连接； 齿轮轴的一端安装在靠近驱动电机 一侧的固定板上； 传动齿轮安装在齿轮轴的另一端； 传动齿轮于驱动 弹簧啮合。 And the weight is located in the first centrifugal groove; the weight and the first adjusting tooth are respectively located on two sides of the transmission shaft symmetrical; the structure installed in each second tooth groove is exactly the same; for any one of them, the second The adjusting tooth is installed at one end of the second tooth groove away from the axis of the driving shaft; the tooth connecting plate is installed at the lower end of the second adjusting tooth, and the tooth connecting plate is located in the second centrifugal groove; the tooth connecting plate and the first A plurality of tension springs are evenly mounted between the two centrifugal grooves; a spring fixed disc is respectively mounted on both ends of the transmission shaft, and two spring fixed discs are respectively located on the first adjusting tooth and the second adjusting tooth Both sides; the two ends of the driving spring are respectively mounted on the two spring fixing discs, and the driving spring is nested on the driving shaft; the driving springs respectively and the first adjusting teeth and the second adjusting teeth mounted on the driving shaft Cooperating; adjusting the outer circumference of the threaded wheel with external thread; adjusting the inner circumference of the threaded wheel with internal thread; The threaded wheel is mounted on the drive shaft, and the adjusting threaded wheel is located between the two spring fixed discs; the internal thread on the adjusting thread wheel is matched with the driving spring; one end of the adjusting U-ring is mounted on the adjusting handle; the adjusting U-ring One end of the adjusting handle is mounted on the transmission shaft; the other end of the adjusting u-ring is mounted on the end surface of the adjusting screw wheel away from the driving motor; the internal ring gear is mounted on the fixing plate through the ring gear support, and the internal tooth The ring nesting and adjusting the outer side of the threaded wheel; the inner ring gear is matched with the external thread on the adjusting thread wheel; the two end portions of the inner ring ring remotely from the driving motor are symmetrically mounted with two curved connecting plates; the connecting disc is mounted on the transmission On the shaft, and the connecting disc is connected with two curved connecting plates; one end of the gear shaft is mounted on a fixing plate near one side of the driving motor; the transmission gear is mounted at the other end of the gear shaft; the transmission gear is meshed with the driving spring.
[权利要求 2] 根据权利要求 1所述的一种用于轮椅的蜗杆传动机构， 其特征在于： 上述第二调节齿牙的齿牙倾斜角大于第一调节齿牙的齿牙倾斜角。  [Claim 2] A worm gear mechanism for a wheelchair according to claim 1, wherein: the tooth pitch angle of the second adjusting tooth is larger than the tooth tilt angle of the first adjusting tooth.
[权利要求 3] 根据权利要求 1所述的一种用于轮椅的蜗杆传动机构， 其特征在于： 上述调节螺纹轮对驱动弹簧有限位作用。  [Claim 3] A worm gear mechanism for a wheelchair according to claim 1, wherein: said adjusting thread wheel acts in a limited position on the drive spring.
[权利要求 4] 根据权利要求 1所述的一种用于轮椅的蜗杆传动机构， 其特征在于： 上述在使用之前可以通过调节调节把手来控制调节螺纹轮与驱动弹簧 的相对位置； 从而控制驱动弹簧的初始弹性性能。  [Claim 4] A worm gear mechanism for a wheelchair according to claim 1, wherein: the relative position of the adjusting screw wheel and the driving spring can be controlled by adjusting the adjusting handle before use; thereby controlling the driving The initial elastic properties of the spring.
[权利要求 5] 根据权利要求 1所述的一种用于轮椅的蜗杆传动机构， 其特征在于： 上述在初始状态下第一调节齿牙在压缩弹簧和重块的共同作用下处于 传动轴外侧的高度小于传动齿轮和驱动弹簧啮合吋， 传动齿轮与传动 轴外圆面之间的间隙； 初始状态下第一调节齿牙在压缩弹簧和重块的 共同作用下处于传动轴外侧的高度小于调节螺纹轮和驱动弹簧啮合吋 ， 调节螺纹轮与传动轴外圆面之间的间隙。  [Claim 5] A worm gear mechanism for a wheelchair according to claim 1, wherein: in the initial state, the first adjusting tooth is outside the transmission shaft by the action of the compression spring and the weight The height is smaller than the gap between the transmission gear and the driving spring, the gap between the transmission gear and the outer circumference of the transmission shaft; in the initial state, the height of the first adjustment tooth outside the transmission shaft under the action of the compression spring and the weight is less than the adjustment The threaded wheel and the drive spring engage 吋 to adjust the gap between the threaded wheel and the outer circular surface of the drive shaft.
[权利要求 6] 根据权利要求 1所述的一种用于轮椅的蜗杆传动机构， 其特征在于： 上述在工作状态下第二调节齿牙在拉伸弹簧和离心力的共同作用下处 于传动轴外侧的最大高度小于传动齿轮和驱动弹簧啮合吋， 传动齿轮 与传动轴外圆面之间的间隙； 在工作状态下第二调节齿牙在拉伸弹簧 和离心力的作用下处于传动轴外侧的最大高度小于调节螺纹轮和驱动 弹簧啮合吋， 调节螺纹轮与传动轴外圆面之间的间隙。 [Claim 6] A worm gear mechanism for a wheelchair according to claim 1, wherein: in the working state, the second adjusting tooth is outside the transmission shaft by the combination of the tension spring and the centrifugal force The maximum height is smaller than the gap between the transmission gear and the driving spring, the gap between the transmission gear and the outer circumference of the transmission shaft; in the working state, the second adjustment tooth is at the maximum height outside the transmission shaft under the action of the tension spring and the centrifugal force Less than adjustment thread wheel and drive The spring engages the 吋 to adjust the gap between the threaded wheel and the outer circular surface of the drive shaft.
PCT/CN2017/106030 2017-09-30 2017-10-13 Worm drive mechanism for wheelchair WO2019061559A1 (en)

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