CN110381904B - Adjustable worm transmission mechanism for wheelchair - Google Patents
Adjustable worm transmission mechanism for wheelchair Download PDFInfo
- Publication number
- CN110381904B CN110381904B CN201880018288.1A CN201880018288A CN110381904B CN 110381904 B CN110381904 B CN 110381904B CN 201880018288 A CN201880018288 A CN 201880018288A CN 110381904 B CN110381904 B CN 110381904B
- Authority
- CN
- China
- Prior art keywords
- adjusting
- spring
- tooth
- transmission shaft
- driving
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 236
- 210000003781 tooth socket Anatomy 0.000 claims description 56
- 230000006835 compression Effects 0.000 claims description 19
- 238000007906 compression Methods 0.000 claims description 19
- 230000000670 limiting effect Effects 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 description 24
- 230000001105 regulatory effect Effects 0.000 description 22
- 238000000034 method Methods 0.000 description 10
- 238000009434 installation Methods 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
Images
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
Landscapes
- 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)
- Gear Transmission (AREA)
Abstract
An adjustable worm transmission mechanism for a wheelchair comprises a driving motor (1), a driving spring (6) and a transmission gear (7), and people use the wheelchair designed by the invention and rotate an adjusting handle (15) before using the wheelchair; the adjusting U-shaped ring (13) is driven to rotate by the adjusting handle (15); the adjusting U-shaped ring (13) drives the adjusting threaded wheel (14) to rotate; the rotation of the adjusting threaded wheel (14) enables the adjusting threaded wheel (14) to move along the axis of the adjusting threaded wheel (14), and the initial elastic performance of the driving spring (6) can be controlled by adjusting the adjusting handle (15). Further controlling the maximum torque which can be transmitted by the driving spring (6); when people adjust the initial elastic property of the thread; controlling the driving motor (1) to start working; the driving motor (1) drives the transmission shaft (5) to rotate; the transmission shaft (5) drives the two spring fixing discs (8) to rotate; the two spring fixing discs (8) drive the driving spring (6) to rotate; the driving spring (6) rotates to drive the transmission gear (7) to rotate; the transmission gear (7) drives the gear shaft (11) to rotate; the wheelchair can be driven to work by the rotation of the gear shaft (11).
Description
Technical Field
The invention belongs to the technical field of wheelchair driving, and particularly relates to an adjustable worm transmission mechanism for a wheelchair.
Background
When the existing wheelchair is used, people are difficult to close the driving motor switch after the driving motor switch is turned on due to misoperation; but also may strain the arms due to subconscious movements of the person; thus bringing much inconvenience to the user; therefore, it is necessary to design a wheelchair transmission mechanism capable of being automatically adjusted to be turned off or adjusted with enough time when a person turns on a switch of a driving motor due to an erroneous operation.
Technical problem
The wheelchair in the prior art is unsafe to use and inconvenient to use.
Technical solution
In order to solve the defects in the prior art, the invention discloses an adjustable worm transmission mechanism for a wheelchair, which is realized by adopting the following technical scheme.
The utility model provides a can regulate and control worm drive mechanism for wheelchair which characterized in that: the device comprises a driving motor, a motor support, a toothed ring support, a fixing plate, a transmission shaft, a driving spring, a transmission gear, a spring fixing disc, an inner toothed ring, an arc-shaped connecting plate, a gear shaft, a connecting disc, an adjusting U-shaped ring, an adjusting threaded wheel, an adjusting motor, a first adjusting tooth, a spring fixing plate, a compression spring, a weight block, an extension spring, a second adjusting tooth, a telescopic driving shaft, a second toothed groove, a first toothed groove and a connecting rod, wherein the driving motor is arranged on the fixing plate through the motor support; the transmission shaft is connected with an output shaft of the driving motor; a plurality of first tooth sockets are uniformly arranged on the outer circular surface of the transmission shaft along the axial direction; the first tooth socket passes through the center of the transmission shaft; a plurality of second tooth sockets are uniformly arranged on the outer circular surface of the transmission shaft along the axial direction; the first tooth socket and the adjacent second tooth socket form an included angle of ninety degrees; the mounting structures in each first tooth socket are completely the same; for any one of the two parts, the spring fixing plate is arranged at one end, close to the axis of the transmission shaft, in the first tooth socket; the first adjusting tooth is arranged at one end, far away from the axis of the transmission shaft, in the first tooth socket; one end of the connecting rod is arranged on the first adjusting tooth; the other end of the connecting rod passes through the spring fixing plate; a compression spring is arranged between the spring fixing plate and the first adjusting tooth; the weight is arranged at the lower end of the connecting rod; the weight and the first adjusting teeth are respectively positioned on two symmetrical sides of the transmission shaft; the mounting structures in each second tooth socket are completely the same; for any one of the two adjusting teeth, the second adjusting tooth is arranged at one end, far away from the axis of the transmission shaft, in the second tooth socket; an extension spring is arranged between the second adjusting tooth and the second tooth socket; two ends of the transmission shaft are respectively provided with a spring fixing disc, and the two spring fixing discs are respectively positioned at two sides of the first adjusting tooth and the second adjusting tooth; two ends of the driving spring are respectively arranged on the two spring fixing discs, and the driving spring is nested on the transmission shaft; the driving spring is respectively matched with a first adjusting tooth and a second adjusting tooth which are arranged on the transmission shaft; the outer circular surface of the adjusting threaded wheel is provided with an external thread; the inner circular surface of the adjusting threaded wheel is provided with internal threads; the adjusting threaded wheel is arranged on the transmission shaft and is positioned between the two spring fixing discs; the internal thread on the adjusting threaded wheel is matched with the driving spring; the adjusting motor is arranged on the transmission shaft at one side far away from the driving motor; one end of the telescopic driving shaft is connected with a rotating shaft of the adjusting motor; one end of the adjusting U-shaped ring is arranged on the end face of the adjusting threaded wheel far away from the driving motor; the other end of the adjusting U-shaped ring is connected with a telescopic driving shaft; the inner gear ring is supported and installed on the fixed plate through the gear ring, and the inner gear ring is nested and is arranged outside the adjusting threaded wheel; the inner gear ring is matched with the external thread on the adjusting threaded wheel; two arc-shaped connecting plates are symmetrically arranged on the end surface of one side of the inner gear ring, which is far away from the driving motor; the connecting disc is arranged on the transmission shaft and is connected with the two arc-shaped connecting plates; one end of the gear shaft is arranged on the fixing plate close to one side of the driving motor; the transmission gear is arranged at the other end of the gear shaft; the transmission gear is engaged with the driving spring.
As a further improvement of the present technology, the tooth inclination angle of the second adjustment tooth is larger than the tooth inclination angle of the first adjustment tooth.
As a further improvement of the technology, the adjusting screw wheel has a limiting effect on the driving spring.
As a further improvement of the technology, the relative position of the adjusting screw wheel and the driving spring can be controlled by adjusting the adjusting motor before use; thereby controlling the initial elastic properties of the drive spring.
As a further improvement of the technology, the height of the first adjusting tooth which is positioned outside the transmission shaft under the combined action of the compression spring and the weight in the initial state is smaller than the clearance between the transmission gear and the outer circular surface of the transmission shaft when the transmission gear is meshed with the driving spring; in the initial state, the height of the first adjusting tooth, which is positioned outside the transmission shaft under the combined action of the compression spring and the weight, is smaller than the clearance between the adjusting threaded wheel and the outer circular surface of the transmission shaft when the adjusting threaded wheel is meshed with the driving spring.
As a further improvement of the technology, the maximum height of the second adjusting tooth which is positioned at the outer side of the transmission shaft under the combined action of the extension spring and the centrifugal force in the working state is smaller than the gap between the transmission gear and the outer circular surface of the transmission shaft when the transmission gear is meshed with the driving spring; and in a working state, the maximum height of the second adjusting tooth at the outer side of the transmission shaft under the action of the extension spring and the centrifugal force is smaller than the clearance between the adjusting threaded wheel and the outer circular surface of the transmission shaft when the adjusting threaded wheel is meshed with the driving spring.
The transmission shaft is connected with the output shaft of the driving motor; a plurality of first tooth sockets are uniformly arranged on the outer circular surface of the transmission shaft along the axial direction; the first tooth socket passes through the center of the transmission shaft; a plurality of second tooth sockets are uniformly arranged on the outer circular surface of the transmission shaft along the axial direction; the first tooth socket and the adjacent second tooth socket form an included angle of ninety degrees; the mounting structures in each first tooth socket are completely the same; for any one of the two parts, the spring fixing plate is arranged at one end, close to the axis of the transmission shaft, in the first tooth socket; the first adjusting tooth is arranged at one end, far away from the axis of the transmission shaft, in the first tooth socket; one end of the connecting rod is arranged on the first adjusting tooth; the other end of the connecting rod passes through the spring fixing plate; a compression spring is arranged between the spring fixing plate and the first adjusting tooth; the weight is arranged at the lower end of the connecting rod; the weight and the first adjusting teeth are respectively positioned on two symmetrical sides of the transmission shaft; the mounting structures in each second tooth socket are completely the same; for any one of the two adjusting teeth, the second adjusting tooth is arranged at one end, far away from the axis of the transmission shaft, in the second tooth socket; an extension spring is arranged between the second adjusting tooth and the second tooth socket; two ends of the transmission shaft are respectively provided with a spring fixing disc, and the two spring fixing discs are respectively positioned at two sides of the first adjusting tooth and the second adjusting tooth; two ends of the driving spring are respectively arranged on the two spring fixing discs, and the driving spring is nested on the transmission shaft; the driving spring is respectively matched with a first adjusting tooth and a second adjusting tooth which are arranged on the transmission shaft; the outer circular surface of the adjusting threaded wheel is provided with an external thread; the inner circular surface of the adjusting threaded wheel is provided with internal threads; the adjusting threaded wheel is arranged on the transmission shaft and is positioned between the two spring fixing discs; the internal thread on the adjusting threaded wheel is matched with the driving spring; the adjusting motor is arranged on the transmission shaft at one side far away from the driving motor; one end of the telescopic driving shaft is connected with a rotating shaft of the adjusting motor; one end of the adjusting U-shaped ring is arranged on the end face of the adjusting threaded wheel far away from the driving motor; the other end of the adjusting U-shaped ring is connected with a telescopic driving shaft; the inner gear ring is supported and installed on the fixed plate through the gear ring, and the inner gear ring is nested and is arranged outside the adjusting threaded wheel; the inner gear ring is matched with the external thread on the adjusting threaded wheel; two arc-shaped connecting plates are symmetrically arranged on the end surface of one side of the inner gear ring, which is far away from the driving motor; the connecting disc is arranged on the transmission shaft and is connected with the two arc-shaped connecting plates; one end of the gear shaft is arranged on the fixing plate close to one side of the driving motor; the transmission gear is arranged at the other end of the gear shaft; the transmission gear is engaged with the driving spring. The tooth inclination angle of the second adjusting tooth is larger than that of the first adjusting tooth. The adjusting threaded wheel has a limiting effect on the driving spring. The relative position of the regulating screw wheel and the driving spring can be controlled by controlling the regulating motor before the use of the invention; thereby controlling the initial elastic properties of the drive spring. In an initial state, the height of the first adjusting tooth, which is positioned on the outer side of the transmission shaft under the combined action of the compression spring and the weight, is smaller than the clearance between the transmission gear and the outer circular surface of the transmission shaft when the transmission gear is meshed with the driving spring; in the initial state, the height of the first adjusting tooth, which is positioned outside the transmission shaft under the combined action of the compression spring and the weight, is smaller than the clearance between the adjusting threaded wheel and the outer circular surface of the transmission shaft when the adjusting threaded wheel is meshed with the driving spring. In a working state, the maximum height of the second adjusting tooth, which is positioned outside the transmission shaft under the combined action of the extension spring and the centrifugal force, is smaller than the gap between the transmission gear and the outer circular surface of the transmission shaft when the transmission gear is meshed with the driving spring; and in a working state, the maximum height of the second adjusting tooth at the outer side of the transmission shaft under the action of the extension spring and the centrifugal force is smaller than the clearance between the adjusting threaded wheel and the outer circular surface of the transmission shaft when the adjusting threaded wheel is meshed with the driving spring. When people use the wheelchair designed by the invention, people control the adjusting motor before use; the U-shaped ring is driven to be adjusted to rotate through an adjusting motor; the adjusting U-shaped ring drives the adjusting threaded wheel to rotate; because the driving motor is in a stop state at the moment; namely, the inner gear ring is in a static state; the inner gear ring is matched with the external thread on the adjusting threaded wheel; therefore, when the adjusting threaded wheel rotates, the adjusting threaded wheel moves along the axis of the adjusting threaded wheel, namely, the relative position of the adjusting threaded wheel and the driving spring can be controlled by controlling the adjusting motor; thereby controlling the initial elastic properties of the drive spring. Thereby controlling the maximum torque which can be transmitted by the driving spring; when people adjust the initial elastic property of the thread; controlling a driving motor to start working; the driving motor drives the transmission shaft to rotate; the transmission shaft drives the two spring fixing discs to rotate; the two spring fixing disks drive the driving springs to rotate; the driving spring rotates to drive the transmission gear to rotate; the transmission gear drives the gear shaft to rotate; the rotating force can be transmitted to the tire of the wheelchair through the gear shaft; thereby driving the wheelchair to work through the rotation of the tire; in the invention, after the initial elastic performance of the driving spring for driving the transmission gear to rotate is determined; driving the motor to work; when the driving motor works, the speed of the driving motor driving the transmission shaft to rotate can be gradually increased, and the weight is arranged at the lower end of the connecting rod, and the weight and the first adjusting teeth are respectively positioned at two symmetrical sides of the transmission shaft; therefore, under the centrifugal action, the weight block can drive the connecting rod to move to one side far away from the first adjusting teeth; the connecting rod drives the first adjusting teeth to move towards the inner side of the transmission shaft; the second adjusting teeth gradually move to the outer side of the transmission shaft under the action of centrifugal force; the binding force of the first adjusting teeth to the driving spring is gradually reduced in the initial moving process of the first adjusting teeth; the second adjusting tooth does not move out of the transmission shaft at the moment; so that the torque which can be transmitted by the driving spring is continuously reduced; when the first adjusting tooth is about to completely move to the inner side of the transmission shaft, the second adjusting tooth just moves out of the transmission shaft; the binding force of the first adjusting tooth and the second adjusting tooth to the driving spring is minimum; i.e. the torque transmitted by the drive spring is minimal; when the first adjusting teeth completely move to the inner side of the transmission shaft, the height of the second adjusting teeth moving out of the transmission shaft is gradually increased; at the moment, the binding force of the second adjusting teeth on the driving spring is gradually increased; namely, the torque which can be transmitted by the driving spring is also increased continuously; when the second adjusting tooth is completely moved out of the transmission shaft; the torque transmitted by the drive spring also reaches the maximum stable state; namely, the rotating speed of the transmission gear reaches a steady state. When people use the wheelchair, when the switch of the driving motor is turned on due to wrong operation; the driving motor will work; the tire will rotate; at the moment, people can hold the tire of the wheelchair consciously; if the rotation torque of the tire is large, the arm can be twisted; therefore, the binding force of the first adjusting tooth and the second adjusting tooth to the driving spring is controlled; so that people can hold the tire tightly; the binding force of the first adjusting tooth and the second adjusting tooth to the driving spring is minimum; i.e. the torque transmitted by the drive spring is minimal; i.e. the rotational torque of the wheelchair tires is minimal; when people hold the tire of the wheelchair tightly; the tire will stop rotating; the transmission gear can extrude the driving spring after the tire stops rotating; causing the drive spring to compress; and when the spring is compressed to the limit; the driving spring drives the transmission gear to rotate again; but in the process one has already adjusted or has switched off the drive motor; therefore, the invention can delay the time for driving the transmission gear to rotate again by the driving spring when the bearing capacity of the transmission gear is increased suddenly by controlling the elasticity of the driving spring; meanwhile, the impact of a part of transmission gears on the transmission shaft can be absorbed through the elasticity of the driving spring; namely, the transmission shaft is protected; the drive motor is protected. When the elastic property of the driving spring is adjusted in an initial state, the internal thread of the adjusting threaded wheel is just meshed with the driving spring to rotate in the rotating process of the adjusting threaded wheel; therefore, the adjusting threaded wheel cannot interfere with the driving spring in the moving process; in the invention, the tooth inclination angle of the second adjusting tooth is larger than that of the first adjusting tooth; namely, the binding force of the second adjusting tooth to the driving spring when moving to the outermost side of the transmission shaft is greater than the binding force of the first adjusting tooth to the driving spring in an initial state; that is, the torque of the drive spring initially driving the drive gear is less than the torque of the drive spring driving the drive gear after the drive gear is stabilized. In the invention, the weight block is arranged on the transmission shaft and is arranged at the lower side of the connecting rod; therefore, when the weight block moves, the weight block can drive the connecting rod to move together; namely, the first adjusting teeth are driven to move together; the binding force of the first regulating tooth on the transmission shaft to the driving spring is gradually bound; when the driving spring transmits torque, the parts of the driving spring acting on the transmission gear bear the extrusion force of the transmission gear on the driving spring one by one in the rotating process; the first adjusting teeth and the second adjusting teeth are protected; reducing the frequency of replacing the first and second regulating teeth; in the invention, the second adjusting teeth on the transmission shaft can move under the centrifugal action; namely, the binding force of the second regulating teeth on the transmission shaft to the driving spring is gradually bound; when the driving spring transmits torque, the parts of the driving spring acting on the transmission gear bear the extrusion force of the transmission gear on the driving spring one by one in the rotating process; the first adjusting teeth and the second adjusting teeth are protected; the frequency of replacing the first and second regulating teeth is reduced. If the old people use the wheelchair designed by the invention; the reaction of the elderly is slow; therefore, when people open the switch of the driving motor due to wrong operation, the adjusting motor designed by the invention is used; the relative position of the adjusting threaded wheel and the driving spring can be adjusted again through the adjusting motor; the working part of the drive spring is lengthened, so that the impact force which can be borne by the adjusting thread is increased; further prolonging the time for the driving spring to drive the transmission gear to rotate again; the adjustment time of the old people due to wrong operation when using the wheelchair designed by the invention is ensured.
When people use the wheelchair designed by the invention, people control the adjusting motor before use; the U-shaped ring is driven to be adjusted to rotate through an adjusting motor; the adjusting U-shaped ring drives the adjusting threaded wheel to rotate; because the driving motor is in a stop state at the moment; namely, the inner gear ring is in a static state; the inner gear ring is matched with the external thread on the adjusting threaded wheel; therefore, when the adjusting threaded wheel rotates, the adjusting threaded wheel moves along the axis of the adjusting threaded wheel, namely, the relative position of the adjusting threaded wheel and the driving spring can be controlled by controlling the adjusting motor; thereby controlling the initial elastic properties of the drive spring. Thereby controlling the maximum torque which can be transmitted by the driving spring; when people adjust the initial elastic property of the thread; controlling a driving motor to start working; the driving motor drives the transmission shaft to rotate; the transmission shaft drives the two spring fixing discs to rotate; the two spring fixing disks drive the driving springs to rotate; the driving spring rotates to drive the transmission gear to rotate; the transmission gear drives the gear shaft to rotate; the rotating force can be transmitted to the tire of the wheelchair through the gear shaft; and then the wheel chair is driven to work through the rotation of the tire.
Advantageous effects
Compared with the traditional wheelchair driving technology, the wheelchair designed by the invention can convert the high rotating speed of the driving motor during working into lower rotating speed through the worm transmission mechanism; thereby driving the wheelchair to work; meanwhile, the automatic adjustment can be carried out, so that people can have enough time to close or adjust when the switch of the driving motor is turned on due to misoperation.
Drawings
FIG. 1 is a schematic view of an integral component installation; FIG. 2 is a schematic view of the internal structure of the integral unit; FIG. 3 is a schematic view of the internal structural mounting of the integral unit; FIG. 4 is a schematic view of the internal structural distribution of the integral unit; FIG. 5 is a schematic cross-sectional view of the internal structure of the integrated component; FIG. 6 is a schematic view of an inner ring gear structure; FIG. 7 is a schematic view of an adjustment screw wheel configuration; FIG. 8 is a schematic view of the transmission gear installation; FIG. 9 is a schematic view of the transmission gear and drive spring engagement; FIG. 10 is a schematic view of a drive spring installation; FIG. 11 is a first adjustment tooth installation schematic; FIG. 12 is a second adjustment tooth installation schematic; FIG. 13 is a schematic view of a drive shaft configuration; FIG. 14 is a schematic view of a first adjustment tooth configuration; FIG. 15 is a schematic view of a second adjustment tooth configuration; FIG. 16 is a schematic view of the operation of the first and second adjusting teeth; fig. 17 is a schematic diagram of changes in rotational speed of the gear shaft. Number designation in the figures: 1. a drive motor; 2. supporting a motor; 3. a toothed ring support; 4. a fixing plate; 5. a drive shaft; 6. a drive spring; 7. a transmission gear; 8. a spring fixing disc; 9. an inner gear ring; 10. an arc-shaped connecting plate; 11. a gear shaft; 12. connecting the disks; 13. adjusting the U-shaped ring; 14. adjusting the threaded wheel; 15. adjusting the motor; 16. a first adjustment tooth; 17. a spring fixing plate; 18. a compression spring; 19. a weight block; 21. an extension spring; 23. a second adjustment tooth; 24. a telescopic drive shaft; 25. a second socket; 26. a first tooth socket; 27. a connecting rod.
Best mode for carrying out the invention
As shown in fig. 1 and 2, the gear ring type motor comprises a driving motor 1, a motor support 2, a gear ring support 3, a fixing plate 4, a transmission shaft 5, a driving spring 6, a transmission gear 7, a spring fixing disc 8, an inner gear ring 9, an arc-shaped connecting plate 10, a gear shaft 11, a connecting disc 12, an adjusting U-shaped ring 13, an adjusting screw wheel 14, an adjusting motor 15, a first adjusting tooth 16, a spring fixing plate 17, a compression spring 18, a weight 19, an extension spring 21, a second adjusting tooth 23, a telescopic driving shaft 24, a second tooth socket 25, a first tooth socket 26 and a connecting rod 27, wherein the driving motor 1 is mounted on the fixing plate 4 through the motor support 2 as shown in fig. 1; the transmission shaft 5 is connected with an output shaft of the driving motor 1; as shown in fig. 13, a plurality of first tooth sockets 26 are uniformly arranged on the outer circumferential surface of the transmission shaft 5 along the axial direction; the first tooth socket 26 passes through the center of the drive shaft 5; a plurality of second tooth sockets 25 are uniformly arranged on the outer circular surface of the transmission shaft 5 along the axial direction; the first tooth socket 26 and the adjacent second tooth socket 25 form an included angle of ninety degrees; as shown in fig. 11, the mounting structure in each first socket 26 is identical; for any one, the spring fixing plate 17 is installed at one end of the first tooth socket 26 close to the axis of the transmission shaft 5; the first regulating tooth 16 is arranged at one end, far away from the axis of the transmission shaft 5, in the first tooth socket 26; as shown in fig. 14, one end of the connecting rod 27 is mounted on the first regulating tooth 16; the other end of the connecting rod 27 passes through the spring fixing plate 17; a compression spring 18 is arranged between the spring fixing plate 17 and the first adjusting tooth 16; the weight 19 is arranged at the lower end of the connecting rod 27; the weight 19 and the first adjusting teeth 16 are respectively positioned at two symmetrical sides of the transmission shaft 5; as shown in fig. 12, the mounting structure in each second socket 25 is identical; for any one, the second regulating tooth 23 is arranged at one end, far away from the axis of the transmission shaft 5, in the second tooth socket 25; as shown in fig. 15, an extension spring 21 is installed between the second adjustment tooth 23 and the second tooth socket 25; as shown in fig. 4, two spring fixing disks 8 are respectively installed at two ends of the transmission shaft 5, and as shown in fig. 10, the two spring fixing disks 8 are respectively located at two sides of the first adjusting tooth 16 and the second adjusting tooth 23; two ends of the driving spring 6 are respectively installed 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 spring 6 is respectively matched with a first adjusting tooth 16 and a second adjusting tooth 23 which are arranged on the transmission shaft 5; as shown in fig. 7, the adjusting screw wheel 14 has an external thread on its outer circumferential surface; the regulating screw wheel 14 has an internal thread on its inner circumferential surface; the adjusting threaded wheel 14 is arranged on the transmission shaft 5, and the adjusting threaded wheel 14 is positioned between the two spring fixing discs 8; the internal thread on the adjusting threaded wheel 14 is matched with the driving spring 6; as shown in fig. 3, the adjustment motor 15 is mounted on the transmission shaft 5 on the side away from the drive motor 1; one end of the telescopic driving shaft 24 is connected with the rotating shaft of the adjusting motor 15; one end of the adjusting U-shaped ring 13 is arranged on the end surface of the adjusting screw wheel 14 far away from the driving motor 1; the other end of the adjusting U-shaped ring 13 is connected with a telescopic driving shaft 24; as shown in fig. 6, the inner gear ring 9 is mounted on the fixed plate 4 through the gear ring support 3, and the inner gear ring 9 is nested and adjusted outside the threaded wheel 14; the inner gear ring 9 is matched with the external thread on the adjusting threaded wheel 14; two arc-shaped connecting plates 10 are symmetrically arranged on the end surface of one side of the inner gear ring 9, which is far away from the driving motor 1; the connecting disc 12 is arranged on the transmission shaft 5, and the connecting disc 12 is connected with the two arc-shaped connecting plates 10; as shown in fig. 8, one end of the gear shaft 11 is mounted on the fixing plate 4 at a side close to the driving motor 1; the transmission gear 7 is arranged at the other end of the gear shaft 11; as shown in fig. 9, the transmission gear 7 is engaged with the drive spring 6.
The tooth inclination angle of the second adjustment teeth 23 is larger than the tooth inclination angle of the first adjustment teeth 16.
The adjustment screw 14 has a limiting effect on the drive spring 6.
The relative position of the adjusting screw wheel 14 and the driving spring 6 can be controlled by adjusting the adjusting motor 15 before use; thereby controlling the initial elastic properties of the drive spring 6.
The height of the first adjusting tooth 16 which is positioned outside the transmission shaft 5 under the combined action of the compression spring 18 and the weight 19 in the initial state is smaller than the clearance between the transmission gear 7 and the outer circular surface of the transmission shaft 5 when the transmission gear 7 is engaged with the driving spring 6; the height of the first adjusting teeth 16, which are positioned outside the transmission shaft 5 under the combined action of the compression spring 18 and the weight 19 in the initial state, is smaller than the clearance between the adjusting threaded wheel 14 and the outer circumferential surface of the transmission shaft 5 when the adjusting threaded wheel 14 is engaged with the driving spring 6.
The maximum height of the second adjusting teeth 23 which are positioned on the outer side of the transmission shaft 5 under the combined action of the extension spring 21 and the centrifugal force in the working state is smaller than the gap between the transmission gear 7 and the outer circular surface of the transmission shaft 5 when the transmission gear 7 is meshed with the driving spring 6; the maximum height of the second adjusting teeth 23 at the outer side of the transmission shaft 5 under the action of the tension spring 21 and the centrifugal force in the working state is smaller than the clearance between the adjusting threaded wheel 14 and the outer circular surface of the transmission shaft 5 when the adjusting threaded wheel 14 is meshed with the driving spring 6.
In summary, the following steps: the wheelchair designed by the invention can convert the high rotating speed of the driving motor 1 during working into lower rotating speed through the worm transmission mechanism; thereby driving the wheelchair to work; meanwhile, the automatic adjustment can ensure that people have enough time to turn off or adjust when the switch of the driving motor 1 is turned on due to misoperation.
In the invention, a transmission shaft 5 is connected with an output shaft of a driving motor 1; a plurality of first tooth sockets 26 are uniformly arranged on the outer circular surface of the transmission shaft 5 along the axial direction; the first tooth socket 26 passes through the center of the drive shaft 5; a plurality of second tooth sockets 25 are uniformly arranged on the outer circular surface of the transmission shaft 5 along the axial direction; the first tooth socket 26 and the adjacent second tooth socket 25 form an included angle of ninety degrees; the mounting structure in each first tooth socket 26 is identical; for any one, the spring fixing plate 17 is installed at one end of the first tooth socket 26 close to the axis of the transmission shaft 5; the first regulating tooth 16 is arranged at one end, far away from the axis of the transmission shaft 5, in the first tooth socket 26; one end of the connecting rod 27 is mounted on the first adjusting tooth 16; the other end of the connecting rod 27 passes through the spring fixing plate 17; a compression spring 18 is arranged between the spring fixing plate 17 and the first adjusting tooth 16; the weight 19 is arranged at the lower end of the connecting rod 27; the weight 19 and the first adjusting teeth 16 are respectively positioned at two symmetrical sides of the transmission shaft 5; the mounting structure in each second tooth socket 25 is identical; for any one, the second regulating tooth 23 is arranged at one end, far away from the axis of the transmission shaft 5, in the second tooth socket 25; an extension spring 21 is arranged between the second adjusting tooth 23 and the second tooth socket 25; two ends of the transmission shaft 5 are respectively provided with a spring fixing disc 8, and the two spring fixing discs 8 are respectively positioned at two sides of the first adjusting tooth 16 and the second adjusting tooth 23; two ends of a driving spring 6 are respectively arranged on the two spring fixing discs 8, and the driving spring 6 is nested on the transmission shaft 5; the driving spring 6 is respectively matched with a first adjusting tooth 16 and a second adjusting tooth 23 which are arranged on the transmission shaft 5; the outer circular surface of the adjusting threaded wheel 14 is provided with an external thread; the regulating screw wheel 14 has an internal thread on its inner circumferential surface; the adjusting threaded wheel 14 is arranged on the transmission shaft 5, and the adjusting threaded wheel 14 is positioned between the two spring fixing discs 8; the internal thread on the adjusting threaded wheel 14 is matched with the driving spring 6; the adjusting motor 15 is arranged on the transmission shaft 5 at one side far away from the driving motor 1; one end of the telescopic driving shaft 24 is connected with the rotating shaft of the adjusting motor 15; one end of the adjusting U-shaped ring 13 is arranged on the end surface of the adjusting screw wheel 14 far away from the driving motor 1; the other end of the adjusting U-shaped ring 13 is connected with a telescopic driving shaft 24; the inner gear ring 9 is arranged on the fixing plate 4 through the gear ring support 3, and the inner gear ring 9 is nested and arranged outside the adjusting threaded wheel 14; the inner gear ring 9 is matched with the external thread on the adjusting threaded wheel 14; two arc-shaped connecting plates 10 are symmetrically arranged on the end surface of one side of the inner gear ring 9, which is far away from the driving motor 1; the connecting disc 12 is arranged on the transmission shaft 5, and the connecting disc 12 is connected with the two arc-shaped connecting plates 10; one end of the gear shaft 11 is arranged on the fixing plate 4 close to one side of the driving motor 1; the transmission gear 7 is arranged at the other end of the gear shaft 11; the transmission gear 7 is engaged with the drive spring 6. The second adjustment teeth 23 have a tooth inclination angle greater than the tooth inclination angle of the first adjustment teeth 16. The regulating screw wheel 14 has a limiting effect on the drive spring 6 in the invention. The relative position of the regulating screw wheel 14 and the driving spring 6 can be controlled by controlling the regulating motor 15 before the use of the invention; thereby controlling the initial elastic properties of the drive spring 6. The height of the first adjusting tooth 16, which is positioned outside the transmission shaft 5 under the combined action of the compression spring 18 and the weight 19 in the initial state, is smaller than the clearance between the transmission gear 7 and the outer circular surface of the transmission shaft 5 when the transmission gear 7 and the driving spring 6 are engaged; the height of the first adjusting teeth 16, which are positioned outside the transmission shaft 5 under the combined action of the compression spring 18 and the weight 19 in the initial state, is smaller than the clearance between the adjusting threaded wheel 14 and the outer circumferential surface of the transmission shaft 5 when the adjusting threaded wheel 14 is engaged with the driving spring 6. In the working state, the maximum height of the second adjusting teeth 23, which are positioned on the outer side of the transmission shaft 5 under the combined action of the extension spring 21 and the centrifugal force, is smaller than the gap between the transmission gear 7 and the outer circular surface of the transmission shaft 5 when the transmission gear 7 is meshed with the driving spring 6; the maximum height of the second adjusting teeth 23 at the outer side of the transmission shaft 5 under the action of the tension spring 21 and the centrifugal force in the working state is smaller than the clearance between the adjusting threaded wheel 14 and the outer circular surface of the transmission shaft 5 when the adjusting threaded wheel 14 is meshed with the driving spring 6. When people use the wheelchair designed by the invention, people control the adjusting motor 15 before use; the adjusting U-shaped ring 13 is driven to rotate by an adjusting motor 15; the adjusting U-shaped ring 13 drives the adjusting threaded wheel 14 to rotate; since the drive motor 1 is in a stopped state at this time; namely, the inner gear ring 9 is in a static state; the inner gear ring 9 is matched with the external thread on the adjusting threaded wheel 14; when the adjusting screw wheel 14 rotates, the adjusting screw wheel 14 moves along the axis of the adjusting screw wheel 14, namely, the relative position of the adjusting screw wheel 14 and the driving spring 6 can be controlled by controlling the adjusting motor 15; thereby controlling the initial elastic properties of the drive spring 6. Thereby controlling the maximum torque which can be transmitted by the driving spring 6; when people adjust the initial elastic property of the thread; controlling the driving motor 1 to start working; the driving motor 1 drives the transmission shaft 5 to rotate; the transmission shaft 5 drives the two spring fixing discs 8 to rotate; the two spring fixing discs 8 drive the driving spring 6 to rotate; the driving spring 6 rotates to drive the transmission gear 7 to rotate; the transmission gear 7 drives the gear shaft 11 to rotate; the rotational force can be transmitted to the tire of the wheelchair through the gear shaft 11; thereby driving the wheelchair to work through the rotation of the tire; in the invention, after the initial elastic performance of the driving spring 6 for driving the transmission gear 7 to rotate is determined; driving the motor 1 to work; when the driving motor 1 works, the speed of the driving motor 1 driving the transmission shaft 5 to rotate is gradually increased, because the weight 19 is installed at the lower end of the connecting rod 27, and the weight 19 and the first adjusting teeth 16 are respectively located at two mutually symmetrical sides of the transmission shaft 5; therefore, under the centrifugal action, the weight 19 drives the connecting rod 27 to move to the side far away from the first adjusting tooth 16; the connecting rod 27 drives the first adjusting tooth 16 to move towards the inner side of the transmission shaft 5; the second adjusting teeth 23 gradually move towards the outer side of the transmission shaft 5 under the action of centrifugal force; the binding force of the first adjusting tooth 16 to the drive spring 6 is gradually reduced during the initial movement of the first adjusting tooth 16; while the second adjusting tooth 23 has not yet moved out of the drive shaft 5; as shown in fig. 16 (a-b), the torque that can be transmitted by the driving spring 6 is reduced; when the first adjusting tooth 16 is about to move completely inside the transmission shaft 5, the second adjusting tooth 23 also moves out of the transmission shaft 5; the binding force of the first adjusting tooth 16 and the second adjusting tooth 23 on the driving spring 6 is minimum; as shown in fig. 16 (b-c), i.e., the torque transmitted by the driving spring 6 is minimized; when the first adjusting tooth 16 is completely moved to the inner side of the transmission shaft 5, the height of the second adjusting tooth 23 moved out of the transmission shaft 5 is gradually increased; as shown in fig. 16 (c-d), the binding force of the second regulating tooth 23 to the driving spring 6 is gradually increased; namely, the torque which can be transmitted by the driving spring 6 is also increased continuously; when the second adjustment tooth 23 is moved completely out of the drive shaft 5; the torque transmitted by the drive spring 6 also reaches the maximum steady state; as shown in fig. 17, a, b, c, d in the figure correspond to those in fig. 16, that is, the rotational speed of the transmission gear 7 also reaches a steady state. When people use the wheelchair, when people open the switch of the driving motor 1 due to wrong operation; the driving motor 1 will work; the tire will rotate; at the moment, people can hold the tire of the wheelchair consciously; if the rotation torque of the tire is large, the arm can be twisted; therefore, the binding force of the first adjusting tooth 16 and the second adjusting tooth 23 on the driving spring 6 is controlled; so that people can hold the tire tightly; the binding force of the first adjusting tooth 16 and the second adjusting tooth 23 on the driving spring 6 is minimum; i.e. the torque transmitted by the drive spring 6 is minimal; i.e. the rotational torque of the wheelchair tires is minimal; when people hold the tire of the wheelchair tightly; the tire will stop rotating; and the transmission gear 7 will press the driving spring 6 after the tire stops rotating; causing the drive spring 6 to compress; and when the spring is compressed to the limit; the driving spring 6 drives the transmission gear 7 to rotate again; but in the process one has already adjusted or switched off the drive motor 1; the invention can delay the time when the driving spring 6 drives the transmission gear 7 to rotate again when the bearing capacity of the transmission gear 7 is increased suddenly by controlling the elasticity of the driving spring 6; meanwhile, the impact of a part of the transmission gear 7 on the transmission shaft 5 can be absorbed through the elasticity of the driving spring 6; namely, the transmission shaft 5 is protected; the drive motor 1 is protected. When the elastic property of the driving spring 6 is adjusted in an initial state, in the rotating process of the adjusting threaded wheel 14, the internal thread of the adjusting threaded wheel 14 is just meshed with the driving spring 6 to rotate; the adjustment screw wheel 14 does not interfere with the drive spring 6 during the movement; in the invention, the tooth inclination angle of the second adjusting tooth 23 is larger than that of the first adjusting tooth 16; namely, the binding force of the second adjusting tooth 23 to the driving spring 6 when moving to the outermost side of the transmission shaft 5 is larger than the binding force of the first adjusting tooth 16 to the driving spring 6 in the initial state; i.e. the torque with which the drive spring 6 initially drives the transmission gear 7 is smaller than the torque with which the drive spring 6 drives the transmission gear 7 after the transmission gear 7 has stabilized. In the invention, the weight 19 is arranged on the transmission shaft 5 and is arranged at the lower side of the connecting rod 27; therefore, when the weight 19 moves, the weight 19 drives the connecting rod 27 to move together; namely, the first adjusting teeth 16 are driven to move; namely, the binding force of the first regulating tooth 16 on the transmission shaft 5 to the driving spring 6 is gradually bound; that is, when the driving spring 6 transmits torque, the parts of the driving spring 6 acting on the transmission gear 7 bear the extrusion force of the transmission gear 7 on the driving spring 6 in the rotating process one by one; the first adjusting tooth 16 and the second adjusting tooth 23 are protected; reducing the frequency of replacing the first adjusting tooth 16 and the second adjusting tooth 23; the second adjusting teeth 23 on the transmission shaft 5 can move under the centrifugal action in the invention; the binding force of the second regulating tooth 23 on the transmission shaft 5 to the driving spring 6 is gradually bound; that is, when the driving spring 6 transmits torque, the parts of the driving spring 6 acting on the transmission gear 7 bear the extrusion force of the transmission gear 7 on the driving spring 6 in the rotating process one by one; the first adjusting tooth 16 and the second adjusting tooth 23 are protected; the frequency of replacing the first adjusting tooth 16 and the second adjusting tooth 23 is reduced. If the old people use the wheelchair designed by the invention; the reaction of the elderly is slow; therefore, the adjusting motor 15 designed by the invention is used when people open the switch of the driving motor 1 due to wrong operation; the relative position of the regulating screw wheel 14 and the driving spring 6 can be regulated again through the regulating motor 15; lengthening the working part of the drive spring 6 increases the impact force that the adjusting screw thread can bear; further prolonging the time for the driving spring 6 to drive the transmission gear 7 to rotate again; the adjustment time of the old people due to wrong operation when using the wheelchair designed by the invention is ensured.
The specific implementation mode is as follows: when people use the wheelchair designed by the invention, people control the adjusting motor 15 before use; the adjusting U-shaped ring 13 is driven to rotate by an adjusting motor 15; the adjusting U-shaped ring 13 drives the adjusting threaded wheel 14 to rotate; since the drive motor 1 is in a stopped state at this time; namely, the inner gear ring 9 is in a static state; the inner gear ring 9 is matched with the external thread on the adjusting threaded wheel 14; when the adjusting screw wheel 14 rotates, the adjusting screw wheel 14 moves along the axis of the adjusting screw wheel 14, namely, the relative position of the adjusting screw wheel 14 and the driving spring 6 can be controlled by controlling the adjusting motor 15; thereby controlling the initial elastic properties of the drive spring 6. Thereby controlling the maximum torque which can be transmitted by the driving spring 6; when people adjust the initial elastic property of the thread; controlling the driving motor 1 to start working; the driving motor 1 drives the transmission shaft 5 to rotate; the transmission shaft 5 drives the two spring fixing discs 8 to rotate; the two spring fixing discs 8 drive the driving spring 6 to rotate; the driving spring 6 rotates to drive the transmission gear 7 to rotate; the transmission gear 7 drives the gear shaft 11 to rotate; the rotational force can be transmitted to the tire of the wheelchair through the gear shaft 11; and then the wheel chair is driven to work through the rotation of the tire.
Industrial applicability
The invention has been developed successfully and used; the expected effect is achieved. The invention is not limited to the preferred embodiments described above, it being understood that the inventive concept may be embodied in other forms and fall within the scope of the invention.
Claims (5)
1. The utility model provides a can regulate and control worm drive mechanism for wheelchair which characterized in that: the device comprises a driving motor, a motor support, a toothed ring support, a fixing plate, a transmission shaft, a driving spring, a transmission gear, a spring fixing disc, an inner toothed ring, an arc-shaped connecting plate, a gear shaft, a connecting disc, an adjusting U-shaped ring, an adjusting threaded wheel, an adjusting motor, a first adjusting tooth, a spring fixing plate, a compression spring, a weight block, an extension spring, a second adjusting tooth, a telescopic driving shaft, a second toothed groove, a first toothed groove and a connecting rod, wherein the driving motor is arranged on the fixing plate through the motor support; the transmission shaft is connected with an output shaft of the driving motor; a plurality of first tooth sockets are uniformly arranged on the outer circular surface of the transmission shaft along the axial direction; the first tooth socket passes through the center of the transmission shaft; a plurality of second tooth sockets are uniformly arranged on the outer circular surface of the transmission shaft along the axial direction; the first tooth socket and the adjacent second tooth socket form an included angle of ninety degrees; the mounting structures in each first tooth socket are completely the same; for any one of the two parts, the spring fixing plate is arranged at one end, close to the axis of the transmission shaft, in the first tooth socket; the first adjusting tooth is arranged at one end, far away from the axis of the transmission shaft, in the first tooth socket; one end of the connecting rod is arranged on the first adjusting tooth; the other end of the connecting rod passes through the spring fixing plate; a compression spring is arranged between the spring fixing plate and the first adjusting tooth; the weight is arranged at the lower end of the connecting rod; the weight and the first adjusting teeth are respectively positioned on two symmetrical sides of the transmission shaft; the mounting structures in each second tooth socket are completely the same; for any one of the two adjusting teeth, the second adjusting tooth is arranged at one end, far away from the axis of the transmission shaft, in the second tooth socket; an extension spring is arranged between the second adjusting tooth and the second tooth socket; two ends of the transmission shaft are respectively provided with a spring fixing disc, and the two spring fixing discs are respectively positioned at two sides of the first adjusting tooth and the second adjusting tooth; two ends of the driving spring are respectively arranged on the two spring fixing discs, and the driving spring is nested on the transmission shaft; the driving spring is respectively matched with a first adjusting tooth and a second adjusting tooth which are arranged on the transmission shaft; the outer circular surface of the adjusting threaded wheel is provided with an external thread; the inner circular surface of the adjusting threaded wheel is provided with internal threads; the adjusting threaded wheel is arranged on the transmission shaft and is positioned between the two spring fixing discs; the internal thread on the adjusting threaded wheel is matched with the driving spring; the adjusting motor is arranged on the transmission shaft at one side far away from the driving motor; one end of the telescopic driving shaft is connected with a rotating shaft of the adjusting motor; one end of the adjusting U-shaped ring is arranged on the end face of the adjusting threaded wheel far away from the driving motor; the other end of the adjusting U-shaped ring is connected with a telescopic driving shaft; the inner gear ring is supported and installed on the fixed plate through the gear ring, and the inner gear ring is nested and is arranged outside the adjusting threaded wheel; the inner gear ring is matched with the external thread on the adjusting threaded wheel; two arc-shaped connecting plates are symmetrically arranged on the end surface of one side of the inner gear ring, which is far away from the driving motor; the connecting disc is arranged on the transmission shaft and is connected with the two arc-shaped connecting plates; one end of the gear shaft is arranged on the fixing plate close to one side of the driving motor; the transmission gear is arranged at the other end of the gear shaft; the transmission gear is meshed with the driving spring; the tooth inclination angle of the second adjusting teeth is larger than that of the first adjusting teeth.
2. The adjustable worm drive for a wheelchair of claim 1, wherein: the adjusting threaded wheel has a limiting effect on the driving spring.
3. The adjustable worm drive for a wheelchair of claim 1, wherein: the relative position of the adjusting threaded wheel and the driving spring can be controlled by controlling the adjusting motor before use; thereby controlling the initial elastic properties of the drive spring.
4. The adjustable worm drive for a wheelchair of claim 1, wherein: in an initial state, the height of the first adjusting tooth, which is positioned on the outer side of the transmission shaft under the combined action of the compression spring and the weight, is smaller than the clearance between the transmission gear and the outer circular surface of the transmission shaft when the transmission gear is meshed with the driving spring; in the initial state, the height of the first adjusting tooth, which is positioned outside the transmission shaft under the combined action of the compression spring and the weight, is smaller than the clearance between the adjusting threaded wheel and the outer circular surface of the transmission shaft when the adjusting threaded wheel is meshed with the driving spring.
5. The adjustable worm drive for a wheelchair of claim 1, wherein: the maximum height of the second adjusting tooth at the outer side of the transmission shaft under the combined action of the extension spring and the centrifugal force is smaller than the clearance between the transmission gear and the outer circular surface of the transmission shaft when the transmission gear is meshed with the driving spring in the working state of the adjustable worm transmission mechanism; and in a working state, the maximum height of the second adjusting tooth at the outer side of the transmission shaft under the action of the extension spring and the centrifugal force is smaller than the clearance between the adjusting threaded wheel and the outer circular surface of the transmission shaft when the adjusting threaded wheel is meshed with the driving spring.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710923546.8A CN107496089B (en) | 2017-09-30 | 2017-09-30 | Adjustable worm transmission mechanism for wheelchair |
| CN2017109235468 | 2017-09-30 | ||
| PCT/CN2018/078260 WO2019062029A1 (en) | 2017-09-30 | 2018-03-07 | Adjustable and controllable worm transmission mechanism for wheelchair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110381904A CN110381904A (en) | 2019-10-25 |
| CN110381904B true CN110381904B (en) | 2020-07-28 |
Family
ID=60699328
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710923546.8A Active CN107496089B (en) | 2017-09-30 | 2017-09-30 | Adjustable worm transmission mechanism for wheelchair |
| CN201880018288.1A Expired - Fee Related CN110381904B (en) | 2017-09-30 | 2018-03-07 | Adjustable worm transmission mechanism for wheelchair |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710923546.8A Active CN107496089B (en) | 2017-09-30 | 2017-09-30 | Adjustable worm transmission mechanism for wheelchair |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN107496089B (en) |
| WO (1) | WO2019062029A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107496089B (en) * | 2017-09-30 | 2023-12-01 | 安徽未易智能科技有限公司 | Adjustable worm transmission mechanism for wheelchair |
| CN107654580A (en) * | 2017-09-30 | 2018-02-02 | 常熟市平方轮椅有限公司 | A kind of controllable worm gearing of wheelchair |
| CN108730421A (en) * | 2018-06-29 | 2018-11-02 | 张惠峰 | It is a kind of that there is the worm gearing for alleviating impact force function |
| CN108533688B (en) * | 2018-06-29 | 2020-05-29 | 黄海英 | Worm gear and worm transmission device with functions of relieving impact force and preventing jamming |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2623587B1 (en) * | 1987-11-23 | 1992-04-03 | Rockwell Cim | MOTOR-REDUCING DEVICE FOR DRIVING A WORKPIECE WITH SAFETY EFFORT CONTROL |
| WO2002040897A1 (en) * | 2000-11-16 | 2002-05-23 | Robert Bosch Gmbh | Gear train element for play-free torque transmission |
| JP3769565B2 (en) * | 2003-10-10 | 2006-04-26 | 住友重機械工業株式会社 | Geared motor used in electric wheelchair drive device |
| CN201057245Y (en) * | 2007-05-08 | 2008-05-07 | 郭聿耘 | Automatic clearance-eliminating worm-gear drive pair |
| CN101684825A (en) * | 2008-09-24 | 2010-03-31 | 蒋亮健 | Electric fan swing angle adjusting device |
| CN201300733Y (en) * | 2008-10-17 | 2009-09-02 | 东莞市智维数控科技有限公司 | Driver for an electric wheelchair |
| CN102028588A (en) * | 2010-12-22 | 2011-04-27 | 常熟市平方轮椅有限公司 | Manual wheelchair |
| CN202313999U (en) * | 2011-11-05 | 2012-07-11 | 陈戈平 | Electric wheelchair control device |
| CN202505628U (en) * | 2012-01-16 | 2012-10-31 | 周拥军 | Engaging and disengaging type electrically powered wheelchair driver |
| CN103840603A (en) * | 2012-11-26 | 2014-06-04 | 德昌电机(深圳)有限公司 | Driving device |
| CN202950855U (en) * | 2012-12-17 | 2013-05-29 | 浙江联宜电机股份有限公司 | Gear clutch device of electrically propelled wheelchair |
| CN104434427A (en) * | 2013-09-18 | 2015-03-25 | 凌春林 | Magnetic massage wheelchair for the disabled |
| US20150252940A1 (en) * | 2014-03-05 | 2015-09-10 | BlueSky Designs, Inc. | Mounting and positioning apparatus for increased user independence |
| CN203777184U (en) * | 2014-04-13 | 2014-08-20 | 昆山奥仕达电动科技有限公司 | Electric wheelchair |
| CN104207898B (en) * | 2014-08-22 | 2016-10-05 | 太仓市中峰模具塑胶有限公司 | A kind of electric wheelchair driving means |
| KR20160103634A (en) * | 2015-02-25 | 2016-09-02 | 계명대학교 산학협력단 | wheelchair with mountable power train system and controlled by passenger motion |
| US9925968B2 (en) * | 2015-05-18 | 2018-03-27 | Beijingwest Industries Co., Ltd. | Brake booster assembly |
| CN105090370A (en) * | 2015-06-30 | 2015-11-25 | 杭州轰驰科技有限公司 | Speed reduction transmission device |
| CN105471167A (en) * | 2015-12-01 | 2016-04-06 | 宁波市镇海元益机电制造有限公司 | Permanent-magnet deceleration motor for electrically propelled wheelchair |
| CN107654580A (en) * | 2017-09-30 | 2018-02-02 | 常熟市平方轮椅有限公司 | A kind of controllable worm gearing of wheelchair |
| CN107496089B (en) * | 2017-09-30 | 2023-12-01 | 安徽未易智能科技有限公司 | Adjustable worm transmission mechanism for wheelchair |
-
2017
- 2017-09-30 CN CN201710923546.8A patent/CN107496089B/en active Active
-
2018
- 2018-03-07 CN CN201880018288.1A patent/CN110381904B/en not_active Expired - Fee Related
- 2018-03-07 WO PCT/CN2018/078260 patent/WO2019062029A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019062029A1 (en) | 2019-04-04 |
| CN107496089B (en) | 2023-12-01 |
| CN107496089A (en) | 2017-12-22 |
| CN110381904A (en) | 2019-10-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110402340B (en) | Adjustable worm transmission mechanism for wheelchair | |
| CN110381904B (en) | Adjustable worm transmission mechanism for wheelchair | |
| CN110382911B (en) | Worm transmission mechanism for wheelchair | |
| EP3183475B1 (en) | Linear actuator | |
| CN110381903B (en) | Worm transmission mechanism for wheelchair | |
| EP3293418B1 (en) | Back knocking mechanism and knocking method therefor | |
| CN106989117B (en) | Mechanical contrate-gear-type clutch | |
| CN109602197A (en) | Rotating disk locking structure and turning chair | |
| RU2531656C2 (en) | Mechanical device for transmission of threshold force | |
| CN111585134B (en) | Motor brush mechanism | |
| CN210471554U (en) | Safe lift office chair | |
| CN209474127U (en) | Rotating disk locking structure and turning chair | |
| CN201373050Y (en) | Automobile automatic adjusting arm | |
| CN207229610U (en) | A kind of rotary power system revolving joint | |
| RU205183U1 (en) | ADJUSTABLE CONTINUOUS DRIVE | |
| CN218121365U (en) | Torsional spring fatigue testing machine for mechanical crank rocker mechanism | |
| CN217440759U (en) | Gear backlash adjusting mechanism | |
| CN216293368U (en) | Mechanical design working platform for automation | |
| CN216306651U (en) | Gear and gear meshing clearance eliminating mechanism | |
| WO2023223061A1 (en) | Double eccentric disc and planetary gear with double eccentric | |
| CN209391484U (en) | A kind of attachment device and its sofa or chaise longue for sofa or chaise longue | |
| CN205459680U (en) | Massager | |
| CN221097166U (en) | Brake cable extension joint for electric vehicle | |
| CN221171709U (en) | Armrest slowly-descending structure | |
| CN220475541U (en) | Motor capable of controlling bearing pretightening force |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200701 Address after: 317000 no.6-185, fangjianong village, Datian street, Linhai City, Taizhou City, Zhejiang Province Applicant after: Linhai small walnut Industrial Design Service Department Address before: 215554, Changshou City, Jiangsu province Suzhou Lake Town, Tong Tong Industrial Park 2 Applicant before: CHANGSHU PINGFANG WHEELCHAIR Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200728 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |