WO2019062004A1 - Adjustable and controllable worm transmission mechanism for wheelchair - Google Patents
Adjustable and controllable worm transmission mechanism for wheelchair Download PDFInfo
- Publication number
- WO2019062004A1 WO2019062004A1 PCT/CN2018/076935 CN2018076935W WO2019062004A1 WO 2019062004 A1 WO2019062004 A1 WO 2019062004A1 CN 2018076935 W CN2018076935 W CN 2018076935W WO 2019062004 A1 WO2019062004 A1 WO 2019062004A1
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- Prior art keywords
- adjusting
- tooth
- spring
- shaft
- drive
- Prior art date
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Classifications
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- 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
- A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
- F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
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- 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
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- Engineering & Computer Science (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)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Transmission Devices (AREA)
- Gear Transmission (AREA)
Abstract
Disclosed is an adjustable and controllable worm transmission mechanism for a wheelchair, the worm transmission mechanism comprising a driving motor (1), a driving spring (6), and a transmission gear (7). Before the wheelchair is used, an adjusting U-shaped ring (13) is driven to rotate by controlling an adjusting motor (15); the adjusting U-shaped ring (13) drives an adjusting thread wheel (14) to rotate; and the rotation of the adjusting thread wheel (14) causes the adjusting thread wheel (14) to move along an axis, such that the initial elastic performance of the driving spring (6) can be controlled by the adjusting motor (15), and in turn, the maximum torque transmitted by the driving spring (6) is controlled. After the initial elastic performance of a thread is adjusted, the driving motor (1) is controlled, such that same starts to work; the driving motor (1) drives a transmission shaft (5) to rotate; the transmission shaft (5) drives 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 a gear shaft (11) to rotate; and the wheelchair can be driven to work by the rotation of the gear shaft (11).
Description
本发明属于轮椅驱动技术领域，尤其涉及一种轮椅用可调控蜗杆传动机构。The invention belongs to the technical field of wheelchair driving, and particularly relates to an adjustable worm gear mechanism for a wheelchair.
目前使用的轮椅在使用过程中，人们因为错误操作打开驱动电机开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开驱动电机开关时，能够有足够的时间关闭或者调整的轮椅传动机构是非常有必要的。When the wheelchair currently in use is in use, it is difficult to turn it off after opening the drive motor switch due to wrong operation; and the arm may be sprained because of people's subconscious movement; this brings a lot of inconvenience to the user; A wheelchair transmission mechanism capable of having sufficient time to close or adjust when a person opens a drive motor switch due to an erroneous operation by automatic adjustment is very necessary.
现有技术中的轮椅使用不安全，使用不方便。The wheelchair in the prior art is unsafe to use and inconvenient to use.
为解决现有技术中的上述缺陷，本发明公开一种轮椅用可调控蜗杆传动机构，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 an adjustable worm gear mechanism for a wheelchair, which is realized by the following technical solutions.
一种轮椅用可调控蜗杆传动机构，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、调节电机、第一调节齿牙、弹簧固定板、压缩弹簧、重块、拉伸弹簧、第二调节齿牙、伸缩驱动轴、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开有许多第一齿牙槽；第一齿牙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开有许多第二齿牙槽；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；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；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；第二调节齿牙与第二齿牙槽之间安装有拉伸弹簧；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；调节电机安装在远离驱动电机一侧的传动轴上；伸缩驱动轴的一端与调节电机的转轴连接；调节U形环的一端安装在调节螺纹轮远离驱动电机一侧的端面上；调节U形环的另一端与伸缩驱动轴连接；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。Adjustable worm gear mechanism for wheelchair, which comprises: drive motor, motor support, ring support, fixed plate, drive shaft, drive spring, transmission gear, spring fixed disc, internal gear ring, curved connection Plate, gear shaft, connecting disc, adjusting U-ring, adjusting thread wheel, adjusting motor, first adjusting tooth, spring fixing plate, compression spring, weight, tension spring, second adjusting tooth, telescopic drive shaft a second tooth groove, a first tooth groove, a connecting rod, wherein the driving motor is mounted on the fixing plate by the motor support; the driving shaft is connected with the output shaft of the driving motor; the outer circular surface of the driving shaft is evenly distributed along the axial direction There are a plurality of first tooth slots; the first tooth groove passes through the center of the transmission shaft; the outer circumference of the transmission shaft uniformly opens a plurality of second tooth grooves along the axial direction; the first tooth groove and the adjacent The second tooth slots are at an angle of ninety degrees; the structure of each of the first tooth slots is identical; for any one of them, the spring fixing plate is mounted in the first tooth groove near the axis of the drive shaft. One end; first Adjusting the tooth to be installed 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 passes through the spring fixing plate; the spring fixing plate and the first adjusting tooth a compression spring is installed between the teeth; the weight is mounted on the lower end of the connecting rod; the weight and the first adjusting tooth are respectively located on two sides of the transmission shaft symmetrical; the structure of each second tooth groove is completely the same; Any one of the second adjustment teeth is installed at one end of the second tooth groove away from the axis of the transmission shaft; a tension spring is installed between the second adjustment tooth and the second tooth groove; the two ends of the transmission shaft are respectively installed There is 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 driven The spring is nested on the drive shaft; the drive spring is respectively matched with the first adjustment tooth and the second adjustment tooth mounted on the transmission shaft; the outer circumference of the adjustment thread wheel has an external thread; and the inner circular surface of the adjustment thread wheel is adjusted With 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; the adjusting motor is mounted on the driving shaft away from the side of the driving motor One end of the telescopic drive shaft is connected with the rotating shaft of the adjusting motor; one end of the adjusting U-ring is mounted on the end surface of the adjusting screw wheel away from the driving motor; the other end of the adjusting U-ring is connected with the telescopic drive shaft; the inner ring gear The ring gear is mounted on the fixed plate by the ring support, and the inner ring gear is nested and adjusted outside the threaded wheel; the inner ring gear is matched with the external thread on the adjusting thread wheel; the inner ring ring is symmetrically mounted on the side end surface away from the driving motor 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 a fixing plate near the side of the driving motor; the transmission gear is mounted on the gear The other end of the shaft; the transmission gear meshes with the drive spring.
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.
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。As a further improvement of the present technology, the above-described adjustment threaded wheel has a limit function on the drive spring.
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电机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 motor before use; thereby controlling the initial elastic performance of the drive spring.
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时，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时，调节螺纹轮与传动轴外圆面之间的间隙。As a further improvement of the present technology, in the initial state, when the height of the first adjusting tooth under the action of the compression spring and the weight is outside the transmission shaft, the transmission gear and the outer circumference of the transmission shaft are smaller than the transmission gear and the driving spring. The gap between the adjusting teeth and the outer circumference of the transmission shaft when the first adjusting tooth is in the outer side of the transmission shaft under the action of the compression spring and the weight is smaller than the adjustment of the threaded wheel and the driving spring. Clearance.
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时，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时，调节螺纹轮与传动轴外圆面之间的间隙。 As a further improvement of the present technology, in the working state, the maximum height of the second adjusting tooth under the joint of the tension spring and the centrifugal force is smaller than the outer gear of the transmission gear and the driving spring, and the outer circumference of the transmission gear and the transmission shaft The gap between the faces; 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 outer diameter of the adjusting screw wheel and the driving spring, and the outer ring surface of the adjusting screw wheel and the driving shaft The gap between them.
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开有许多第一齿牙槽；第一齿牙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开有许多第二齿牙槽；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；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；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；第二调节齿牙与第二齿牙槽之间安装有拉伸弹簧；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；调节电机安装在远离驱动电机一侧的传动轴上；伸缩驱动轴的一端与调节电机的转轴连接；调节U形环的一端安装在调节螺纹轮远离驱动电机一侧的端面上；调节U形环的另一端与伸缩驱动轴连接；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控制调节电机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时，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时，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时，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时，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控制调节电机；通过调节电机带动调节U形环转动；调节U形环带动调节螺纹轮转动；由于此时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，即可以通过控制调节电机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时；控制驱动电机开始工作；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；在驱动电机工作时，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；而此时第二调节齿牙还未移动出传动轴；所以此时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时，第二调节齿牙也刚好移出传动轴；此时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时，第二调节齿牙移动出传动轴的高度也逐渐变大；此时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时；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。人们在使用轮椅时，当人们因为错误操作而将驱动电机开关打开时；驱动电机就会工作；轮胎就会转动；而此时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时，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时；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；此时当人们握紧轮椅轮胎时；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时；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时驱动弹簧再次驱动传动齿轮转动的时间；同时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时，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时对驱动弹簧的束缚力大于第一调节齿牙在初始状态时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连接杆一起移动；即带动第一调节齿牙一起移动；传动轴上的第一调节齿牙对驱动弹簧的束缚力是逐渐束缚的；即驱动弹簧在传递扭矩时，驱动弹簧上对传动齿轮起作用的部分逐个来承受传动齿轮在转动过程中对驱动弹簧的挤压力；保护了第一调节齿牙和第二调节齿牙；减小更换第一调节齿牙和第二调节齿牙的频率；本发明中在离心作用下传动轴上的第二调节齿牙会移动；即传动轴上第二调节齿牙对驱动弹簧的束缚力是逐渐束缚的；即驱动弹簧在传递扭矩时，驱动弹簧上对传动齿轮起作用的部分逐个来承受传动齿轮在转动过程中对驱动弹簧的挤压力；保护了第一调节齿牙和第二调节齿牙；减小更换第一调节齿牙和第二调节齿牙的频率。本发明中如果老人在使用本发明设计的轮椅时；由于老人的反应较慢；所以本发明设计的调节电机在人们因为错误操作而将驱动电机开关打开时；通过调节电机可以再次调节调节螺纹轮与驱动弹簧的相对位置；加长驱动弹簧的工作部分使得调节螺纹能够承受的冲击力加大；进而延长驱动弹簧再次驱动传动齿轮转动的时间；保证了老人在使用本发明设计的轮椅时因为错误操作做出的调整时间。In the invention, the transmission shaft is connected with the output shaft of the driving motor; the outer circular surface of the transmission shaft is uniformly opened with a plurality of first tooth grooves in the axial direction; the first tooth groove passes through the center of the transmission shaft; the outer circumference of the transmission shaft a plurality of second tooth grooves are uniformly formed on the surface in the axial direction; the first tooth groove is at an angle of ninety degrees with the adjacent second tooth groove; each of the first tooth grooves is installed The structure 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 adjusting tooth is installed at one end of the first tooth groove away from the axis of the transmission shaft; One end is mounted on the first adjusting tooth; the other end of the connecting rod passes through the spring fixing plate; a compression spring is installed between the spring fixing plate and the first adjusting tooth; the weight is installed at the lower end of the connecting rod; the weight and the first An adjusting tooth is 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 in the second tooth groove away from the axis of the driving shaft One end A tension spring is mounted between the tooth and the second tooth groove; a spring fixing disc is respectively mounted on both ends of the transmission shaft, and the two spring fixing discs are respectively located at the first adjusting tooth and the second adjusting tooth Both sides of the driving spring are respectively mounted on the two spring fixing discs, and the driving spring is nested on the transmission shaft; the driving springs are respectively associated with the first adjusting teeth and the second adjusting teeth mounted on the transmission shaft The tooth has an external thread on the outer circumference of the adjusting thread wheel; the inner circumference of the adjusting thread wheel 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; Adjusting the internal thread on the threaded wheel to cooperate with the drive spring; the adjusting motor is mounted on the drive shaft away from the side of the drive motor; one end of the telescopic drive shaft is connected to the rotating shaft of the adjusting motor; one end of the adjusting U-ring is mounted on the adjusting threaded wheel away from The end of the driving motor is connected to the end surface of the motor; the other end of the adjusting U-ring is connected to the telescopic drive shaft; the inner ring is mounted on the fixing plate by the ring gear, and the inner ring is nested and adjusted outside the threaded wheel The inner ring gear cooperates with the external thread on the adjusting thread wheel; the inner ring gear is symmetrically mounted with two curved connecting plates on one end surface away from the driving motor; the connecting disc is mounted on the transmission shaft, and the connecting disc is connected with Two arc-shaped connecting plates are connected; 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. In the present invention, the tooth pitch angle of the second adjusting tooth is larger than the tooth tilt angle of the first adjusting 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 screw wheel and the drive spring can be controlled by controlling the adjustment motor before use; thereby controlling the initial elastic performance of the drive spring. In the initial state, the height of the first adjusting tooth under the action of the compression spring and the weight is smaller than the gap between the transmission gear and the outer circular surface of the transmission shaft when the transmission gear and the driving spring are engaged; The first adjusting tooth has a height outside the driving shaft under the joint action of the compression spring and the weight, and is smaller than the gap between the adjusting screw wheel and the outer circular surface of the transmission shaft when the adjusting screw wheel and the driving spring are engaged. 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 outer circular surface of the transmission shaft when the transmission gear and the driving spring are meshed; In the state, the second adjusting tooth has a maximum height outside the transmission shaft under the action of the tension spring and the centrifugal force, and the gap between the adjusting screw wheel and the outer circular surface of the transmission shaft is adjusted when the adjusting screw wheel and the driving spring are engaged. The wheelchair designed by the present invention is used to control the motor before use; the U-ring is rotated by adjusting the motor; the U-ring is adjusted to adjust the rotation of the thread 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 controlling the adjusting motor 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; when 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 two springs are fixed The 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 rotates to drive the wheelchair; in the present invention, the driving transmission After the initial elastic performance of the drive spring of the gear rotation is determined; the drive motor works; when the drive motor is working, the speed at which the drive motor drives the drive shaft to rotate is gradually increased, because the weight is installed at the lower end of the connecting rod, and the weight and the first The adjusting teeth are respectively located on opposite sides of the transmission shaft; 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 connecting rod drives the first adjusting tooth to the inner side of the driving shaft Moving; and the second adjustment tooth gradually moves toward the drive shaft under the action of centrifugal force Side movement; the first adjustment tooth during the initial movement process will gradually reduce the binding force of the first adjustment tooth to the drive spring; at this time, the second adjustment tooth has not moved out of the transmission shaft; The torque that can be transmitted 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 also just moves out of the drive shaft; at this time, the first adjustment tooth and the second adjustment tooth pair drive The spring has the minimum binding force; that is, the torque transmitted by the driving spring is the smallest; and when the first adjusting tooth moves completely to the inner side of the transmission shaft, the height of the second adjusting tooth moving out of the transmission shaft is gradually increased; Adjusting the binding force of the tooth to the driving spring is gradually increased; that is, the torque transmitted by the driving spring is also continuously increased; when the second adjusting tooth completely moves out of the transmission shaft; the torque transmitted by the driving spring also reaches the maximum steady state That is, the rotational speed of the transmission gear also reaches a steady state. When people use a wheelchair, when people turn on the drive motor switch because of wrong operation; the drive motor will work; the tire will rotate; at this time, people will subconsciously grip the wheelchair tire; if the tire has a large rotational torque At this time, 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; when the person is gripping the tire; the first adjusting tooth and the second adjusting tooth The tooth has the least binding force 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; at this time, when the person holds the wheelchair tire, the tire stops rotating; and the gear is stopped after the tire stops rotating. The drive spring is squeezed; the drive spring is compressed; and when the spring is compressed to the limit; the drive spring will again drive the drive gear to rotate; but in the process, the drive motor has been adjusted or has been turned off; therefore, in the present invention It is possible to delay the drive spring to be driven again when the transmission gear load suddenly increases, by controlling the elasticity of the drive spring. Gear rotating time; while absorbed by the elasticity of the spring portion of the drive impact shaft drive gear; i.e., protection of the drive shaft; protect the drive motor. In the present invention, when adjusting the elastic performance of the drive spring in the initial state, during the rotation of the adjustment thread wheel, the internal thread of the adjustment thread wheel is just meshed 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 has a greater binding force to the drive spring when moving to the outermost side of the transmission shaft. The first adjustment tooth has a binding force to the drive spring in the initial state; that is, the torque of the drive spring initial drive transmission gear is less than the torque of the drive spring drive transmission gear after the transmission gear is stabilized. In the present invention, since the weight is mounted on the transmission shaft and mounted on the lower side of the connecting rod; when the weight moves, the weight will drive the connecting rod to move together; that is, the first adjusting tooth moves together; The binding force of the first adjusting tooth to the driving spring is gradually restrained; that is, when the driving spring transmits the torque, the driving spring acts on the driving gear one by one to bear the pressing force of the driving gear on the driving spring during the rotating process. Protecting the first adjustment tooth and the second adjustment tooth; reducing the frequency of replacing the first adjustment tooth and the second adjustment tooth; in the present invention, the second adjustment tooth on the drive shaft moves under the action of centrifugation That is, the binding force of the second adjusting tooth on the driving shaft to the driving spring is gradually restrained; that is, when the driving spring transmits the torque, the driving spring acts on the driving gear one by one to bear the driving gear during the rotating process. The pressing force of the spring; protecting the first adjusting tooth and the second adjusting tooth; reducing the frequency of replacing the first adjusting tooth and the second adjusting tooth. In the present invention, if the elderly person uses the wheelchair designed by the present invention; since the reaction of the elderly is slow; therefore, the adjusting motor designed by the present invention opens the driving motor switch because of the wrong operation; the adjusting screw wheel can be adjusted again by adjusting the motor. The relative position of the drive spring; the working portion of the extended drive spring increases the impact force that the adjustment thread can withstand; thereby prolonging the time during which the drive spring drives the drive gear again; ensuring that the elderly use the wheelchair designed by the present invention because of incorrect operation The adjustment time made.
人们使用本发明设计的轮椅，在使用之前人们通过控制调节电机；通过调节电机带动调节U形环转动；调节U形环带动调节螺纹轮转动；由于此时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，即可以通过控制调节电机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时；控制驱动电机开始工作；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 used to control the motor before use; the U-ring is rotated by adjusting the motor; the U-ring is adjusted to adjust the rotation of the thread 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 controlling the adjusting motor 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; when 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 two springs are fixed The 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 rotates to drive the wheelchair to work.
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时的高转速转化为较低的转速；从而驱动轮椅工作；同时通过自动调节可以在人们因为错误操作打开驱动电机开关时能够有足够的时间关闭或者调整。Compared with the traditional wheelchair driving technology, the wheelchair designed by the present invention can convert the high rotation speed of the driving motor into a lower rotation speed by the worm transmission mechanism; thereby driving the wheelchair to work; and at the same time, the automatic adjustment can open the driving for people because of the wrong operation. The motor can have enough time to turn off or adjust when switching.
图1是整体部件安装示意图；图2是整体部件内部结构示意图；图3是整体部件内部结构安装示意图；图4是整体部件内部结构分布示意图；图5是整体部件内部结构剖视示意图；图6是内齿环结构示意图；图7是调节螺纹轮结构示意图；图8是传动齿轮安装示意图；图9是传动齿轮和驱动弹簧配合示意图；图10是驱动弹簧安装示意图；图11是第一调节齿牙安装示意图；图12是第二调节齿牙安装示意图；图13是传动轴结构示意图；图14是第一调节齿牙结构示意图；图15是第二调节齿牙结构示意图；图16是第一调节齿牙和第二调节齿牙工作原理示意图；图17是齿轮轴转速变化示意图。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、调节电机；16、第一调节齿牙；17、弹簧固定板；18、压缩弹簧；19、重块；21、拉伸弹簧；23、第二调节齿牙；24、伸缩驱动轴；25、第二齿牙槽；26、第一齿牙槽；27、连接杆。1 is a schematic view showing the internal structure of the whole component; FIG. 2 is a schematic view showing the internal structure of the integral component; FIG. 3 is a schematic view showing the internal structure of the integral component; FIG. 4 is a schematic view showing the internal structure of the integral component; Fig. 7 is a schematic view showing the structure of the adjusting gear wheel; Fig. 8 is a schematic view showing the mounting of the driving gear; Fig. 9 is a schematic view showing the cooperation of the driving gear and the driving spring; Fig. 10 is a schematic view showing the driving spring; Fig. 11 is the first adjusting tooth FIG. 12 is a schematic view showing the structure of the second adjusting tooth; FIG. 13 is a schematic view showing the structure of the first adjusting tooth; FIG. 15 is a schematic view showing the structure of the second adjusting tooth; FIG. Schematic diagram of the working principle of adjusting the tooth and the second adjusting tooth; FIG. 17 is a schematic diagram of the change of the rotational speed of the gear shaft. In the figure, the label name: 1, drive motor; 2, motor support; 3, ring support; 4, fixed plate; 5, drive shaft; 6, drive spring; 7, transmission gear; 8, spring fixed disc; Internal gear ring; 10, curved connecting plate; 11, gear shaft; 12, connecting disc; 13, adjusting U-shaped ring; 14, adjusting thread wheel; 15, adjusting motor; 16, first adjusting tooth; Spring fixing plate; 18, compression spring; 19, weight; 21, tension spring; 23, second adjustment tooth; 24, telescopic drive shaft; 25, second tooth groove; 26, first tooth groove; 27. Connecting rods.
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、调节电机15、第一调节齿牙16、弹簧固定板17、压缩弹簧18、重块19、拉伸弹簧21、第二调节齿牙23、伸缩驱动轴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；传动轴5与驱动电机1输出轴连接；如图13所示，传动轴5的外圆面上沿轴线方向上均匀地开有许多第一齿牙槽26；第一齿牙槽26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开有许多第二齿牙槽25；第一齿牙槽26与相邻的第二齿牙槽25之间成九十度夹角；如图11所示，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；如图14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；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；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，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15所示，第二调节齿牙23与第二齿牙槽25之间安装有拉伸弹簧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，且如图10所示，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；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；如图3所示，调节电机15安装在远离驱动电机1一侧的传动轴5上；伸缩驱动轴24的一端与调节电机15的转轴连接；调节U形环13的一端安装在调节螺纹轮14远离驱动电机1一侧的端面上；调节U形环13的另一端与伸缩驱动轴24连接；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；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。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, and an internal ring gear 9. Arc connecting plate 10, gear shaft 11, connecting disc 12, adjusting U-ring 13, adjusting thread wheel 14, adjusting motor 15, first adjusting tooth 16, spring fixing plate 17, compression spring 18, weight 19, The tension spring 21, the second adjusting tooth 23, the telescopic drive shaft 24, the second tooth groove 25, the first tooth groove 26, and the connecting rod 27, wherein the driving motor 1 is mounted through the motor support 2 as shown in FIG. On the fixed plate 4; the drive shaft 5 is connected with the output shaft of the drive motor 1; as shown in FIG. 13, the outer circular surface of the drive shaft 5 is uniformly opened with a plurality of first tooth grooves 26 in the axial direction; The socket 26 passes through the center of the transmission shaft 5; the outer circumferential surface of the transmission shaft 5 is evenly opened with a plurality of second tooth grooves 25 in the axial direction; the first tooth groove 26 and the adjacent second tooth groove 25 Between 90 degrees; as shown in Figure 11, the structure of each of the first tooth grooves 26 is exactly the same; for any one of them, the spring is fixed 17 is mounted at one end of the first tooth groove 26 near the axis of the drive shaft 5; the first adjustment tooth 16 is mounted at one end of the first tooth groove 26 away from the axis of the drive shaft 5; as shown in FIG. 14, the connecting rod 27 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 mounted between the spring fixing plate 17 and the first adjusting tooth 16; the weight 19 is mounted on the connection The lower end of the rod 27; the weight 19 and the first adjusting tooth 16 are respectively located on opposite sides of the transmission shaft 5; as shown in Fig. 12, the structure installed in each of the second tooth grooves 25 is identical; One, 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. 15, the tension between the second adjusting tooth 23 and the second tooth groove 25 is installed. a spring 21; as shown in FIG. 4, a spring fixing disc 8 is respectively mounted on both ends of the transmission shaft 5, and as shown in FIG. 10, two spring fixing discs 8 are respectively located at the first adjusting tooth 16 and the first 2. Adjusting both sides of the tooth 23; the two ends of the driving spring 6 are respectively mounted on the two spring fixing discs 8, as shown in FIG. As shown, the drive spring 6 is nested on the drive shaft 5; the drive spring 6 is respectively engaged with the first adjustment tooth 16 and the second adjustment tooth 23 mounted on the drive shaft 5; as shown in Fig. 7, the adjustment thread The outer surface of the wheel 14 has an external thread; the inner circumference of the adjustment thread wheel 14 has an internal thread; the adjustment thread wheel 14 is mounted on the transmission shaft 5, and the adjustment thread wheel 14 is located between the two spring fixed discs 8. Adjusting the internal thread on the threaded wheel 14 to cooperate with the drive spring 6; as shown in FIG. 3, the adjustment motor 15 is mounted on the drive shaft 5 away from the drive motor 1; one end of the telescopic drive shaft 24 and the shaft of the adjustment motor 15 One end of the adjusting U-shaped ring 13 is mounted on the end surface of the adjusting screw wheel 14 away from the driving motor 1; the other end of the adjusting U-shaped ring 13 is connected with the telescopic drive shaft 24; as shown in FIG. 6, the internal ring gear 9 The ring gear support 3 is mounted on the fixed plate 4, and the inner ring gear 9 is nested and arranged outside the adjusting threaded wheel 14; the inner ring gear 9 is engaged with the external thread on the adjusting threaded wheel 14; the inner ring gear 9 is remote from the driving motor 1 Two curved connecting plates 10 are symmetrically mounted on one end surface; the connecting disc 12 is mounted on The drive shaft 5 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 fixed plate 4 near the side of the drive motor 1; 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.
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。 The tooth inclination angle of the second adjustment tooth 23 is larger than the tooth inclination angle of the first adjustment tooth 16.
上述调节螺纹轮14对驱动弹簧6有限位作用。The adjustment threaded wheel 14 acts on the drive spring 6 in a limited position.
上述在使用之前可以通过调节调节电机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。The relative position of the adjustment screw wheel 14 to the drive spring 6 can be controlled by adjusting the adjustment motor 15 before use; thereby controlling the initial elastic performance of the drive spring 6.
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啮合时，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啮合时，调节螺纹轮14与传动轴5外圆面之间的间隙。In the initial state, the first adjusting tooth 16 is 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 5 are outside the circle. The gap between the faces; in the initial state, the first adjusting tooth 16 is at a height outside the transmission shaft 5 under the cooperation of the compression spring 18 and the weight 19, and the adjusting screw wheel 14 is adjusted when the adjusting screw wheel 14 and the driving spring 6 are engaged. A gap with the outer circumference of the drive shaft 5.
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啮合时，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啮合时，调节螺纹轮14与传动轴5外圆面之间的间隙。 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, and the outer gear of the transmission gear 7 and the transmission shaft 5 is smaller than the transmission gear 7 and the driving spring 6 are engaged. a gap between the faces; in the working state, the second adjusting tooth 23 is at a maximum height outside the transmission shaft 5 under the action of the tension spring 21 and the centrifugal force, and the adjusting screw wheel 14 is adjusted when the adjusting screw wheel 14 and the driving spring 6 are engaged. A gap with the outer circumference of the drive shaft 5.
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工作时的高转速转化为较低的转速；从而驱动轮椅工作；同时通过自动调节可以在人们因为错误操作打开驱动电机1开关时能够有足够的时间关闭或者调整。In summary, the wheelchair designed by the present invention can convert the high rotation speed of the driving motor 1 into a lower rotation speed by the worm transmission mechanism; thereby driving the wheelchair to work; and at the same time, the automatic adjustment can open the driving motor 1 because of the wrong operation. There is enough time to turn off or adjust when switching.
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开有许多第一齿牙槽26；第一齿牙槽26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开有许多第二齿牙槽25；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；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；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；第二调节齿牙23与第二齿牙槽25之间安装有拉伸弹簧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；调节电机15安装在远离驱动电机1一侧的传动轴5上；伸缩驱动轴24的一端与调节电机15的转轴连接；调节U形环13的一端安装在调节螺纹轮14远离驱动电机1一侧的端面上；调节U形环13的另一端与伸缩驱动轴24连接；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控制调节电机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啮合时，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啮合时，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啮合时，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啮合时，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控制调节电机15；通过调节电机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；由于此时驱动电机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，即可以通过控制调节电机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时；控制驱动电机1开始工作；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工作时，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27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；而此时第二调节齿牙23还未移动出传动轴5；如图16（a-b）段所示，所以此时驱动弹簧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内侧时，第二调节齿牙23也刚好移出传动轴5；此时第一调节齿牙16和第二调节齿牙23对驱动弹簧6的束缚力最小；如图16（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内侧时，第二调节齿牙23移动出传动轴5的高度也逐渐变大；如图16（c-d）段所示，此时第二调节齿牙23对驱动弹簧6的束缚力逐渐加大；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时；驱动弹簧6所传递的扭矩也达到最大稳定状态；如图17所示，即传动齿轮7的转动速度也达到稳定状态。人们在使用轮椅时，当人们因为错误操作而将驱动电机1开关打开时；驱动电机1就会工作；轮胎就会转动；而此时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时，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时；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；此时当人们握紧轮椅轮胎时；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时；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承载力突然加大时驱动弹簧6再次驱动传动齿轮7转动的时间；同时通过驱动弹簧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的弹性性能时，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最外侧时对驱动弹簧6的束缚力大于第一调节齿牙16在初始状态时对驱动弹簧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会带动连接杆27一起移动；即带动第一调节齿牙16移动；即传动轴5上的第一调节齿牙16对驱动弹簧6的束缚力是逐渐束缚的；即驱动弹簧6在传递扭矩时，驱动弹簧6上对传动齿轮7起作用的部分逐个来承受传动齿轮7在转动过程中对驱动弹簧6的挤压力；保护了第一调节齿牙16和第二调节齿牙23；减小更换第一调节齿牙16和第二调节齿牙23的频率；本发明中在离心作用下传动轴5上的第二调节齿牙23会移动；传动轴5上第二调节齿牙23对驱动弹簧6的束缚力是逐渐束缚的；即驱动弹簧6在传递扭矩时，驱动弹簧6上对传动齿轮7起作用的部分逐个来承受传动齿轮7在转动过程中对驱动弹簧6的挤压力；保护了第一调节齿牙16和第二调节齿牙23；减小更换第一调节齿牙16和第二调节齿牙23的频率。本发明中如果老人在使用本发明设计的轮椅时；由于老人的反应较慢；所以本发明设计的调节电机15在人们因为错误操作而将驱动电机1开关打开时；通过调节电机15可以再次调节调节螺纹轮14与驱动弹簧6的相对位置；加长驱动弹簧6的工作部分使得调节螺纹能够承受的冲击力加大；进而延长驱动弹簧6再次驱动传动齿轮7转动的时间；保证了老人在使用本发明设计的轮椅时因为错误操作做出的调整时间。In the present invention, the transmission shaft 5 is connected to the output shaft of the drive motor 1; the outer circular surface of the transmission shaft 5 is evenly opened with a plurality of first tooth grooves 26 in the axial direction; the first tooth groove 26 passes through the center of the transmission shaft 5 a plurality of second tooth grooves 25 are uniformly formed on the outer circumferential surface of the drive shaft 5 in the axial direction; the first tooth groove 26 forms an angle of ninety degrees with the adjacent second tooth groove 25; The structure of each of the first tooth slots 26 is identical; for any one of them, the spring fixing plate 17 is mounted at one end of the first tooth groove 26 near the axis of the drive shaft 5; the first adjusting tooth 16 is mounted at the first One end of the 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 passes through the spring fixing plate 17; the spring fixing plate 17 and the first adjustment A compression spring 18 is mounted between the teeth 16; the weight 19 is mounted at the lower end of the connecting rod 27; the weight 19 and the first adjusting tooth 16 are respectively located on opposite sides of the transmission shaft 5; each second tooth groove The installation structure in 25 is exactly the same; for any one of them, the second adjustment tooth 23 is installed in the second An end of the socket 25 away from the axis of the drive shaft 5; a tension spring 21 is mounted between the second adjustment tooth 23 and the second tooth groove 25; a spring fixing disc 8 is respectively mounted on both ends of the transmission 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; two ends of the driving spring 6 are respectively mounted on the two spring fixing discs 8, and the driving spring 6 is embedded Fitted on the drive shaft 5; the drive spring 6 is respectively engaged with the first adjustment tooth 16 and the second adjustment tooth 23 mounted on the transmission shaft 5; the outer circumference of the adjustment thread wheel 14 has an external thread; the adjustment thread wheel The inner circular surface of 14 has an internal thread; 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 matched with the driving spring 6. The adjusting motor 15 is mounted on the drive shaft 5 away from the drive motor 1; one end of the telescopic drive shaft 24 is coupled to the rotating shaft of the adjusting motor 15; one end of the adjusting U-ring 13 is mounted on the adjusting threaded wheel 14 away from the driving motor 1 On the side end face; adjust the other end of the U-ring 13 and the telescopic drive The movable shaft 24 is connected; the inner ring gear 9 is mounted on the fixed plate 4 through the ring gear support 3, and the inner ring gear 9 is nested and arranged outside the adjusting threaded wheel 14; the inner ring gear 9 is engaged with the external thread on the adjusting threaded wheel 14; Two arcuate connecting plates 10 are symmetrically mounted on one end face of the inner ring gear 9 remote from the driving motor 1; the connecting disc 12 is mounted on the drive 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 near the side of the drive motor 1; the transmission gear 7 is mounted on the other end of the gear shaft 11; the transmission gear 7 is engaged 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. 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 controlling the adjustment motor 15 before use; thereby controlling the initial elastic performance of the drive spring 6. In the initial state, when 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 meshing of the transmission gear 7 and the driving spring 6, 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 cooperation of the compression spring 18 and the weight 19 is less than the height of the outer side of the transmission shaft 5, and the adjusting screw wheel 14 is adjusted when the adjusting screw wheel 14 and the driving spring 6 are engaged. 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 action of the tension spring 21 and the centrifugal force, and the outer diameter of the transmission gear 7 and the transmission shaft 5 is smaller than the transmission gear 7 and the driving spring 6 are engaged. The gap between the second adjusting teeth 23 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 The gap between the outer circular faces of the drive shaft 5. The wheelchair designed by the present invention is controlled by the adjusting motor 15 before use; the adjusting U-ring 13 is rotated by the adjusting motor 15; the adjusting U-shaped ring 13 drives the adjusting screw wheel 14 to rotate; since the driving motor 1 is stopped at this time 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 controlling the adjustment motor 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; when the initial elastic performance of the thread is adjusted; the drive motor 1 is controlled to start working; the drive motor 1 drives the drive shaft 5 to rotate; and the drive shaft 5 drives the two spring-mounted discs 8 Rotating; 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; The operation of the wheelchair is driven by the rotation of the tire; in the present invention, after the initial elastic performance of the drive spring 6 for driving the drive gear 7 is determined; the drive motor 1 is operated; when the drive motor 1 is in operation, the speed at which the drive motor 1 drives the drive shaft 5 to rotate Gradually, since the weight 19 is mounted on the lower end of the connecting rod 27, and the weight 19 and the first adjusting tooth 16 are respectively located on both sides of the transmission shaft 5 symmetrically; therefore, under the action of centrifugation, the weight 19 will drive the connecting rod 27 moves away from the side away from the first adjustment tooth 16; the connecting rod 27 drives the first adjustment tooth 16 to move to the inside of the transmission shaft 5; and the second adjustment tooth 23 The centrifugal force is gradually moved to the outside of the transmission shaft 5; during the initial movement, the first adjustment tooth 16 gradually reduces the binding force of the tooth 16 to the drive spring 6; 23 has not moved out of the drive shaft 5; as shown in Figure 16 (ab), so the torque transmitted by the drive spring 6 will continue to decrease; when the first adjustment tooth 16 is almost completely moved to the inside of the drive shaft 5 At the same time, the second adjusting tooth 23 also just moves out of the transmission shaft 5; at this time, the first adjusting tooth 16 and the second adjusting tooth 23 have the minimum binding force to the driving spring 6; as shown in the paragraph (bc) of Fig. 16, The torque transmitted by the drive spring 6 is minimized; and when the first adjustment tooth 16 is completely moved to the inner side of the transmission shaft 5, the height of the second adjustment tooth 23 moving out of the transmission shaft 5 is also gradually increased; as shown in Fig. 16 (cd) As shown in the paragraph, at this time, the binding force of the second adjusting tooth 23 to the driving spring 6 is gradually increased; that is, the torque that the driving spring 6 can transmit is also continuously increased; when the second adjusting tooth 23 is completely moved out of the driving shaft 5 The torque transmitted by the drive spring 6 also reaches the maximum steady state; , I.e., the rotational speed of the drive gear 7 has reached a steady state. When people use a wheelchair, when people turn on the drive motor 1 switch because of wrong operation; the drive motor 1 will work; the tire will rotate; at this time, people will subconsciously grip the wheelchair tire; if the tire turns torque When it is large, it is possible to sprain the arm; therefore, in the present invention, the binding force of the first adjusting tooth 16 and the second adjusting tooth 23 to the driving spring 6 is controlled; so that when the tire is gripped; the first adjusting tooth 16 and the second adjusting tooth 23 have the least binding force to the driving spring 6; that is, the driving spring 6 transmits the minimum torque; that is, the wheelchair tire has the smallest rotating torque; at this time, when the person holds the wheelchair tire, the tire stops rotating. And the drive gear 7 will squeeze the drive spring 6 after the tire stops rotating; the drive spring 6 is compressed; and when the spring is compressed to the limit; the drive spring 6 will drive the drive gear 7 to rotate again; but in the process The drive motor 1 has been adjusted or has been turned off; therefore, in the present invention, it is possible to delay the drive when the transmission force of the transmission gear 7 suddenly increases by controlling the elasticity of the drive spring 6. 6 again, the spring 7 rotates the drive gear of the transmission time; while the impact absorbing portion of the drive gear 5 through 7 propeller shaft 6, an elastic drive spring; i.e., protection of the drive shaft 5; 1 protects the drive motor. In the present invention, when the elastic property of the drive spring 6 is adjusted in the initial state, during the rotation of the adjustment screw wheel 14, the internal thread of the adjustment screw wheel 14 is just rotated in mesh with the drive spring 6; therefore, the adjustment screw wheel 14 is in the process of 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 to the drive spring 6 at the outermost side 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 on the drive shaft 5 and mounted on the lower side of the connecting rod 27; when the weight 19 is moved, the weight 19 will drive the connecting rod 27 to move together; that is, the first adjusting tooth 16 is driven. Moving; that is, the binding force of the first adjusting tooth 16 on the driving shaft 5 to the driving spring 6 is gradually restrained; that is, when the driving spring 6 transmits the torque, the portion of the driving spring 6 acting on the transmission gear 7 is subjected to one by one. The pressing force of the transmission gear 7 against the driving spring 6 during the rotation; the first adjusting tooth 16 and the second adjusting tooth 23 are protected; and the frequency of replacing the first adjusting tooth 16 and the second adjusting tooth 23 is reduced. In the present invention, the second adjusting tooth 23 on the transmission shaft 5 moves under the action of centrifugation; the binding force of the second adjusting tooth 23 on the driving shaft 5 to the driving spring 6 is gradually restrained; that is, the driving spring 6 is transmitting During the torque, the portion of the drive spring 6 acting on the transmission gear 7 one by one to withstand the pressing force of the transmission gear 7 during the rotation of the drive spring 6; the first adjustment tooth 16 and the second adjustment tooth 23 are protected; Reducing replacement of the first adjustment tooth 16 and the second adjustment tooth Frequency 23. In the present invention, if the elderly person uses the wheelchair designed by the present invention; since the reaction of the elderly is slow; therefore, the adjusting motor 15 designed by the present invention can be adjusted again by adjusting the motor 15 when the switch of the driving motor 1 is turned on due to an erroneous operation; Adjusting the relative position of the threaded wheel 14 and the driving spring 6; lengthening the working portion of the driving spring 6 to increase the impact force that the adjusting thread can withstand; thereby lengthening the time during which the driving spring 6 drives the transmission gear 7 again; ensuring that the elderly use the present The adjustment time of the wheelchair when the invention was designed due to wrong operation.
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控制调节电机15；通过调节电机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；由于此时驱动电机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，即可以通过控制调节电机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时；控制驱动电机1开始工作；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。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS: A wheelchair designed by the present invention is used to control the adjustment motor 15 before use; the U-ring 13 is rotated by the adjustment motor 15; the U-ring 13 is adjusted to drive the adjustment of the threaded wheel 14; 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 along the adjusting thread wheel 14 The axis is moved, that is, the relative position of the adjustment screw wheel 14 and the drive spring 6 can be controlled by controlling the adjustment motor 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; when the initial elastic performance of the thread is adjusted; the drive motor 1 is controlled to start working; the drive motor 1 drives the drive shaft 5 to rotate; and the drive shaft 5 drives the two spring-mounted discs 8 Rotating; 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; The wheel is driven by the rotation of the tire.
本发明已研发成功，并已使用；取得了预期的效果。The present invention has been successfully developed and used; the desired effect has been achieved.
本发明不局限于上述最佳实施方式，应当理解，本发明的构思可以按其他种种形式实施运用，它们同样落在本发明的保护范围内。The present invention is not limited to the above-described preferred embodiments, and it should be understood that the concept of the present invention may be embodied in other forms and they are also within the scope of the present invention.
Claims (4)
- 一种轮椅用可调控蜗杆传动机构，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、调节电机、第一调节齿牙、弹簧固定板、压缩弹簧、重块、拉伸弹簧、第二调节齿牙、伸缩驱动轴、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开有许多第一齿牙槽；第一齿牙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开有许多第二齿牙槽；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；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；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；第二调节齿牙与第二齿牙槽之间安装有拉伸弹簧；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；调节电机安装在远离驱动电机一侧的传动轴上；伸缩驱动轴的一端与调节电机的转轴连接；调节U形环的一端安装在调节螺纹轮远离驱动电机一侧的端面上；调节U形环的另一端与伸缩驱动轴连接；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；所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；所述调节螺纹轮对驱动弹簧有限位作用。Adjustable worm gear mechanism for wheelchair, which comprises: drive motor, motor support, ring support, fixed plate, drive shaft, drive spring, transmission gear, spring fixed disc, internal gear ring, curved connection Plate, gear shaft, connecting disc, adjusting U-ring, adjusting thread wheel, adjusting motor, first adjusting tooth, spring fixing plate, compression spring, weight, tension spring, second adjusting tooth, telescopic drive shaft a second tooth groove, a first tooth groove, a connecting rod, wherein the driving motor is mounted on the fixing plate by the motor support; the driving shaft is connected with the output shaft of the driving motor; the outer circular surface of the driving shaft is evenly distributed along the axial direction There are a plurality of first tooth slots; the first tooth groove passes through the center of the transmission shaft; the outer circumference of the transmission shaft uniformly opens a plurality of second tooth grooves along the axial direction; the first tooth groove and the adjacent The second tooth slots are at an angle of ninety degrees; the structure of each of the first tooth slots is identical; for any one of them, the spring fixing plate is mounted in the first tooth groove near the axis of the drive shaft. One end; first Adjusting the tooth to be installed 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 passes through the spring fixing plate; the spring fixing plate and the first adjusting tooth a compression spring is installed between the teeth; the weight is mounted on the lower end of the connecting rod; the weight and the first adjusting tooth are respectively located on two sides of the transmission shaft symmetrical; the structure of each second tooth groove is completely the same; Any one of the second adjustment teeth is installed at one end of the second tooth groove away from the axis of the transmission shaft; a tension spring is installed between the second adjustment tooth and the second tooth groove; the two ends of the transmission shaft are respectively installed There is 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 driven The spring is nested on the drive shaft; the drive spring is respectively matched with the first adjustment tooth and the second adjustment tooth mounted on the transmission shaft; the outer circumference of the adjustment thread wheel has an external thread; and the inner circular surface of the adjustment thread wheel is adjusted With 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; the adjusting motor is mounted on the driving shaft away from the side of the driving motor One end of the telescopic drive shaft is connected with the rotating shaft of the adjusting motor; one end of the adjusting U-ring is mounted on the end surface of the adjusting screw wheel away from the driving motor; the other end of the adjusting U-ring is connected with the telescopic drive shaft; the inner ring gear The ring gear is mounted on the fixed plate by the ring support, and the inner ring gear is nested and adjusted outside the threaded wheel; the inner ring gear is matched with the external thread on the adjusting thread wheel; the inner ring ring is symmetrically mounted on the side end surface away from the driving motor 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 a fixing plate near the side of the driving motor; the transmission gear is mounted on the gear The other end of the shaft; the transmission gear is meshed with the drive spring; the tooth inclination angle of the second adjustment tooth is greater than the tooth inclination angle of the first adjustment tooth; The drive spring has a limited position.
- 根据权利要求1所述的一种轮椅用可调控蜗杆传动机构，其特征在于：所述在使用之前通过控制调节电机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。The adjustable worm gear mechanism for a wheelchair according to claim 1, wherein the adjusting the relative position of the adjusting screw wheel and the driving spring is controlled by controlling the adjusting motor before use; thereby controlling the initial elastic performance of the driving spring. .
- 根据权利要求1所述的一种轮椅用可调控蜗杆传动机构，其特征在于：所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时，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时，调节螺纹轮与传动轴外圆面之间的间隙。The adjustable worm gear mechanism for a wheelchair according to claim 1, wherein 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 that of the transmission. When the gear and the driving spring are engaged, the gap between the transmission gear and the outer circular surface of the transmission shaft; in the initial state, the height of the first adjusting tooth under the action of the compression spring and the weight is smaller than the adjusting thread wheel and the driving. When the spring is engaged, adjust the gap between the threaded wheel and the outer circular surface of the drive shaft.
- 根据权利要求1所述的一种轮椅用可调控蜗杆传动机构，其特征在于：所述可调控蜗杆传动机构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时，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时，调节螺纹轮与传动轴外圆面之间的间隙。The adjustable worm gear mechanism for a wheelchair according to claim 1, wherein the adjustable worm gear mechanism is in the working state, and the second adjusting tooth is in the transmission shaft under the action of the tension spring and the centrifugal force. The maximum height of the outer side is smaller than the gap between the transmission gear and the outer circular surface of the transmission shaft when the transmission gear and the drive spring are engaged; in the working state, the second adjustment tooth is at the outer side of the transmission shaft under the action of the tension spring and the centrifugal force When the height is smaller than the adjustment of the threaded wheel and the drive spring, the gap between the threaded wheel and the outer circumference of the drive shaft is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201880018287.7A CN110402340B (en) | 2017-09-30 | 2018-02-22 | Adjustable worm transmission mechanism for wheelchair |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710924411.3A CN107654580A (en) | 2017-09-30 | 2017-09-30 | A kind of controllable worm gearing of wheelchair |
| CN201710924411.3 | 2017-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019062004A1 true WO2019062004A1 (en) | 2019-04-04 |
Family
ID=61117339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2018/076935 WO2019062004A1 (en) | 2017-09-30 | 2018-02-22 | Adjustable and controllable worm transmission mechanism for wheelchair |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN107654580A (en) |
| WO (1) | WO2019062004A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116374611A (en) * | 2023-05-19 | 2023-07-04 | 太原福莱瑞达物流设备科技有限公司 | A transport clamping jaw device for buffering feed cylinder |
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 |
| 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 |
| 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 |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6029763A (en) * | 1997-08-27 | 2000-02-29 | Reliance Electric Industrial Company | Worm gear assembly for a medical mobility apparatus permitting manual reverse mobility |
| CN201040065Y (en) * | 2007-03-23 | 2008-03-26 | 苏华 | Driving device for wheelchair |
| US7431110B2 (en) * | 2005-02-04 | 2008-10-07 | Hartford Technologies, Inc. | High-torque gear assembly for personal mobility apparatus |
| CN104207898A (en) * | 2014-08-22 | 2014-12-17 | 太仓市中峰模具塑胶有限公司 | Driving device for electric wheelchair |
| CN104434427A (en) * | 2013-09-18 | 2015-03-25 | 凌春林 | Magnetic massage wheelchair for the disabled |
| DE102014112549B3 (en) * | 2014-06-27 | 2015-11-26 | Timotion Technology Co., Ltd. | Linear actuator and buffer mechanism for the same |
| CN107496089A (en) * | 2017-09-30 | 2017-12-22 | 常熟市平方轮椅有限公司 | A kind of controllable worm gearing for wheelchair |
| CN107647987A (en) * | 2017-09-30 | 2018-02-02 | 常熟市平方轮椅有限公司 | A kind of worm gearing 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 |
| CN107725682A (en) * | 2017-09-30 | 2018-02-23 | 常熟市平方轮椅有限公司 | A kind of wheelchair worm gearing |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191121439A (en) * | 1911-09-28 | 1912-09-19 | Ernest John Morrison | Improvements in and relating to Mechanism for Controlling Valves, Switches or the like at Predetermined Times. |
| US3511920A (en) * | 1967-06-09 | 1970-05-12 | Bosch Gmbh Robert | Worm gearing with overload applied brake |
| SE405422B (en) * | 1975-05-15 | 1978-12-04 | Landis & Gyr Ag | DEVICE FOR SOUND-MUTE SUSPENSION OF AND TRANSFER OF POWER TO THE SYNCHRONIC MOTOR IN A CLOCK |
| US4066922A (en) * | 1975-07-28 | 1978-01-03 | Unelec S.A. | Electrical motor-control device for electrical equipment |
| FR2623587B1 (en) * | 1987-11-23 | 1992-04-03 | Rockwell Cim | MOTOR-REDUCING DEVICE FOR DRIVING A WORKPIECE WITH SAFETY EFFORT CONTROL |
| JPH09184359A (en) * | 1995-12-28 | 1997-07-15 | Aisin Seiki Co Ltd | Power window regulator |
| KR200193359Y1 (en) * | 1999-04-02 | 2000-08-16 | 최태윤 | A transmission for a wheelchair |
| US20100206112A1 (en) * | 2009-02-19 | 2010-08-19 | Hiwin Mikrosystem Corp. | Linear actuator |
| CA2831657C (en) * | 2011-03-29 | 2015-05-12 | Flsmidth A/S | Conveying device and process for operating the same |
| 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 |
| JP6067379B2 (en) * | 2013-01-09 | 2017-01-25 | 本田技研工業株式会社 | Power transmission device |
| CN103312084B (en) * | 2013-06-03 | 2015-05-20 | 常熟市平方轮椅有限公司 | Direct-current brushless driving wheel structure of electric wheelchair |
| CN204147197U (en) * | 2014-08-22 | 2015-02-11 | 太仓市中峰模具塑胶有限公司 | A kind of electric wheelchair driving device |
| CN204253738U (en) * | 2014-10-22 | 2015-04-08 | 金华市禾为工贸有限公司 | A kind of driver |
| CN105496669A (en) * | 2015-12-02 | 2016-04-20 | 广西大学 | Adjustable wheelchair active driving device |
-
2017
- 2017-09-30 CN CN201710924411.3A patent/CN107654580A/en not_active Withdrawn
-
2018
- 2018-02-22 WO PCT/CN2018/076935 patent/WO2019062004A1/en active Application Filing
- 2018-02-22 CN CN201880018287.7A patent/CN110402340B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6029763A (en) * | 1997-08-27 | 2000-02-29 | Reliance Electric Industrial Company | Worm gear assembly for a medical mobility apparatus permitting manual reverse mobility |
| US7431110B2 (en) * | 2005-02-04 | 2008-10-07 | Hartford Technologies, Inc. | High-torque gear assembly for personal mobility apparatus |
| CN201040065Y (en) * | 2007-03-23 | 2008-03-26 | 苏华 | Driving device for wheelchair |
| CN104434427A (en) * | 2013-09-18 | 2015-03-25 | 凌春林 | Magnetic massage wheelchair for the disabled |
| DE102014112549B3 (en) * | 2014-06-27 | 2015-11-26 | Timotion Technology Co., Ltd. | Linear actuator and buffer mechanism for the same |
| CN104207898A (en) * | 2014-08-22 | 2014-12-17 | 太仓市中峰模具塑胶有限公司 | Driving device for electric wheelchair |
| CN107496089A (en) * | 2017-09-30 | 2017-12-22 | 常熟市平方轮椅有限公司 | A kind of controllable worm gearing for wheelchair |
| CN107647987A (en) * | 2017-09-30 | 2018-02-02 | 常熟市平方轮椅有限公司 | A kind of worm gearing 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 |
| CN107725682A (en) * | 2017-09-30 | 2018-02-23 | 常熟市平方轮椅有限公司 | A kind of wheelchair worm gearing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116374611A (en) * | 2023-05-19 | 2023-07-04 | 太原福莱瑞达物流设备科技有限公司 | A transport clamping jaw device for buffering feed cylinder |
| CN116374611B (en) * | 2023-05-19 | 2023-08-15 | 太原福莱瑞达物流设备科技有限公司 | A transport clamping jaw device for buffering feed cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107654580A (en) | 2018-02-02 |
| CN110402340B (en) | 2022-05-31 |
| CN110402340A (en) | 2019-11-01 |
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