Height adjusting mechanism and method of auxiliary driving device for disabled people and manufacturing method of height adjusting mechanism

Abstract

The invention relates to a height adjusting mechanism and method of an auxiliary driving device for the disabled and a manufacturing method of the auxiliary driving device for the disabled, and the height adjusting mechanism comprises a handle, a button, an operating rod, a connecting rod, a connecting piece, a reset pressure spring assembly, a pawl, a ratchet wheel, a handle height adjusting mechanism and a pull rod length adjusting mechanism, the handle height adjusting mechanism comprises a handle tube, a fixed tube and a rear pull pin; positioning holes for inserting the pull pin are formed in the upper pull rod and the handle tube; after the side pull pin and the rear pull pin are pulled to be dislocated, the handle is adjusted to a proper height, and the rear side pull pin and the rear pull pin are inserted into corresponding positioning holes under the action of self elasticity, so that synchronous adjustment of the height of the handle and the brake locking mechanism is completed; and the height adjusting mechanism determines the position by adopting an adaptive method and completes the processing of the positioning hole. Synchronous adjustment of the height of the fixed handle and the length of the brake locking mechanism is achieved so as to meet the requirements of different drivers, meanwhile, a feasible manufacturing method is provided, and the effects of being convenient to adjust and operate, reliable and safe in performance and easy and feasible to manufacture are achieved.

Description

Technical Field

[0001] The present invention relates to a motor vehicle driving device, in particular to a height adjustment mechanism and method of a disabled person's auxiliary driving device and a manufacturing method thereof, belonging to the field of automobile technology. Background Art

[0002] In recent years, with my country's economic development, the rising social status of people with disabilities, and improved quality of life, the demand for car driving has also increased. In 2007, the China Disabled Persons' Federation, the Ministry of Public Security, and other departments jointly formulated and issued the national standard for "Assistive Devices for Driving Vehicles by People with Physical Disabilities." This standard allows people with lower limb disabilities who meet the requirements to apply for a C5 driver's license. Once qualified, they can legally drive an automatic car equipped with an assistive device.

[0003] Currently, there are many car-assisted driving devices suitable for people with lower limb disabilities on the market. These are used to modify ordinary cars of general models. The vast majority of these are manual driving assistance devices. These devices allow people with disabilities to operate the accelerator and brakes with their hands instead of their feet. A search revealed that Chinese patent application number CN216915525U, "Detachable Manual Multifunctional Driving Device," discloses a manual car-assisted driving device for people with disabilities. All operations are integrated into a single handle, allowing people with lower limb disabilities to control the car with one hand. Figure 1 , which includes a base 6, an operating lever 7, a decoupling lever 5, a hook-type one-way lever 2, a throttle linkage assembly 3, a brake linkage assembly 4, a button 101, a pull rod 102, a return spring assembly 103, a pawl 104, a ratchet 105 and a handle 1; wherein the handle 1 is fixed to the operating lever 7, the base 6 is fixed to the vehicle body, the operating lever 7 is hinged to the base 6, the brake linkage assembly 4 is hinged between the operating lever 7 and the main brake pedal to operate the brake, the throttle linkage assembly 3 is connected to the main throttle pedal through the hook-type one-way lever 2 and the decoupling lever 5 to operate the throttle; the button 101 Assembled in the handle 1, pressing the button 101 causes the pull rod 102 to move upward, pulling the pawl 104 to rotate and engage with the ratchet 105, thereby achieving locking in the brake state and playing a parking role. The button 101, pull rod 102, pawl 104 and ratchet 105 constitute the brake locking mechanism of the automobile auxiliary driving device; the pull rod 102 passes through the reset compression spring assembly 103, and the pre-tightening spring in the reset compression spring assembly 103 applies a downward force to the pull rod 102, ensuring that the pull rod 102 is always taut with the button 101, and the pawl 104 is kept disengaged from the ratchet 105 under normal circumstances.

[0004] However, the handle height of the aforementioned manual driving assistance device is fixed, determined after the device is installed on the vehicle. However, drivers vary in height, arm length, and other physical conditions. A fixed handle height can cause inconvenience for some drivers, especially for those with disabilities, making driving operations more difficult. Therefore, a vehicle-assisted driving device with an adjustable handle height is needed. However, for a vehicle-assisted driving device with a brake lock mechanism, simultaneously adjusting the fixed handle height and the brake lock mechanism length poses a significant challenge. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of existing manual driving devices for disabled people, provide a height adjustment mechanism and method for a disabled auxiliary driving device and a manufacturing method thereof, realize the synchronous adjustment of the fixed handle height and the brake locking mechanism length to meet the needs of disabled drivers with different physical conditions, and at the same time provide a practical manufacturing method to ensure the realization of the one-handed driving and brake locking functions of the device, so as to achieve the effects of convenient adjustment operation, reliable and safe performance, and simple and feasible manufacturing.

[0006] The technical solutions adopted by the present invention to solve the technical problems are as follows:

[0007] A height adjustment mechanism of a disabled person assistive driving device is installed on a base of the disabled person assistive driving device, comprising a handle, a button, a joystick, a connecting rod, a connecting plate, a reset compression spring assembly, a pawl and a ratchet, wherein the joystick is hinged on the base and can rotate, the ratchet is fixed to the base, the pawl is hinged on the joystick and can rotate to engage with the ratchet, the lower end of the connecting plate is connected to the upper end of the pawl, and the upper end is connected to the connecting rod, the reset compression spring assembly is fixed to the joystick and is provided with a preload spring inside, the connecting rod passes through the reset compression spring assembly, the preload spring always applies a downward force to the connecting rod, so that the pawl and the ratchet are kept disengaged under normal conditions; the characteristic is that the height adjustment mechanism further comprises an upper pull rod, a lower pull rod, a side pull pin, a handle tube, a fixing tube and a rear pull pin;

[0008] The handle tube and the fixed tube are both tubular components, the fixed tube is vertically fixed to the front side of the joystick, the handle tube is coaxially inserted into the tube cavity of the fixed tube and can slide up and down therein, the handle is fixedly connected to the upper end of the handle tube, and the side of the handle tube facing the joystick is provided with a first handle tube positioning hole, a second handle tube positioning hole and a third handle tube positioning hole from top to bottom, which are used for positioning the handle tube for position adjustment, the rear pull pin is an elastic pin, which is provided on the rear side of the joystick, and when in a naturally elastic state, the pin body of the rear pull pin can be inserted into the first handle tube positioning hole, the second handle tube positioning hole or the third handle tube positioning hole to fix the relative position of the handle tube and the fixed tube;

[0009] The lower pull rod is a tube fitting, which is inserted into the tubular cavity of the handle tube; the upper pull rod is a round rod, the upper part of which is connected to the button, which is installed on the handle and can be reset after being released; the upper pull rod is inserted into the tubular cavity of the lower pull rod and can slide up and down therein, and the lower part is connected to the lower pull rod; the upper pull rod is provided with a first pull rod positioning hole, a second pull rod positioning hole and a third pull rod positioning hole from top to bottom, for inserting the side pull pin to adjust the connection position of the upper pull rod and the lower pull rod; the side pull pin is an elastic pin, which is fixed to the side of the lower pull rod by a side pull pin fixing plate and passes through the tubular wall of the lower pull rod to press against the upper pull rod; when in a naturally elastic state, the pin body of the side pull pin can be inserted into the first pull rod positioning hole, the second pull rod positioning hole or the third pull rod positioning hole to fix the upper pull rod and the lower pull rod.

[0010] As a further improvement, the relative positions of the side pull pin and the rear pull pin, the relative positions of the first handle tube positioning hole and the first pull rod positioning hole, the relative positions of the second handle tube positioning hole and the second pull rod positioning hole, and the relative positions of the third handle tube positioning hole and the third pull rod positioning hole are in a one-to-one correspondence. When the rear pull pin is inserted into the first handle tube positioning hole, the side pull pin is exactly aligned with the first pull rod positioning hole. When the rear pull pin is inserted into the second handle tube positioning hole, the side pull pin is exactly aligned with the second pull rod positioning hole. When the rear pull pin is inserted into the third handle tube positioning hole, the side pull pin is exactly aligned with the third pull rod positioning hole.

[0011] Another technical solution of the present invention is:

[0012] A method for adjusting the height of a disabled person's auxiliary driving device using the height adjustment mechanism includes the following specific steps:

[0013] 1) Pulling the side pull pin out of position, so that the upper pull rod and the lower pull rod are in a free state and can slide up and down relative to each other, while the pawl remains disengaged from the ratchet wheel;

[0014] 2) Pulling the rear pull pin out of position puts the handle tube, the fixed tube, and the joystick in a free state without being connected. When the handle is manually pushed or pulled, the handle tube can be linked to slide in the up-and-down direction within the lumen of the fixed tube;

[0015] 3) releasing the rear pull pin to a naturally compressed state, and then sliding the handle tube to a suitable height position, so that the rear pull pin is inserted into the first handle tube positioning hole, the second handle tube positioning hole, or the third handle tube positioning hole of the handle tube under the action of its own elastic force, thereby fixing the relative position of the handle tube and the joystick, and achieving adjustment and fixation of the handle height;

[0016] 4) Release the side pull pin to put it in a naturally spring-loaded state, press the button on the handle, and when the upper pull rod slides to a suitable position, the side pull pin is inserted into the first pull rod positioning hole, the second pull rod positioning hole or the third pull rod positioning hole of the upper pull rod under the action of its own elastic force, thereby re-fixing the upper pull rod and the lower pull rod to complete the adjustment of the pull rod length, thereby completing the synchronous adjustment of the handle and brake locking mechanism height of the disabled auxiliary driving device.

[0017] Another technical solution of the present invention is:

[0018] A method for manufacturing the height adjustment mechanism of the above-mentioned disabled driving assistance device is characterized in that: during the manufacturing process, an adaptation method is used to determine the position of the positioning hole and complete the processing to ensure that the disabled driving assistance device can reliably achieve the function of synchronous height adjustment of the handle and the brake locking mechanism, and specifically includes the following specific steps:

[0019] 1) Assembling an unfinished upper rod with other components that have completed all manufacturing processes to form a height adjustment mechanism, wherein, except for the first rod positioning hole, the second rod positioning hole, and the third rod positioning hole, which have not yet been machined, the remaining parts of the upper rod have completed the machining process. After the assembly is completed, the upper rod is inserted into the lower rod and is not connected to the lower rod. At the same time, due to the action of the return compression spring assembly, the pawl and the ratchet are in a disengaged state;

[0020] 2) Pulling the handle tube to slide within the fixed tube by the handle, so that the rear pull pin is inserted into the first handle tube positioning hole on the handle tube under the action of its own elastic force, and then removing the side pull pin. Marking the position of the first pull rod positioning hole on the surface of the upper pull rod through the mounting hole of the side pull pin;

[0021] 3) Pull the rear pull pin out of the first handle tube positioning hole, and then repeat step 2), and in this manner, with the rear pull pin respectively inserted into the second handle tube positioning hole and the third handle tube positioning hole, mark the positions of the second pull rod positioning hole and the third pull rod positioning hole on the surface of the upper pull rod;

[0022] 4) Remove the upper rod and, based on the marked positions of the first, second, and third rod positioning holes, machine the first, second, and third rod positioning holes on the upper rod;

[0023] 5) Reassemble the upper pull rod that has completed the processing content described in step 4) and other components that have completed all the processing and manufacturing processes into a height adjustment mechanism.

[0024] Yet another technical solution of the present invention is:

[0025] A disabled person's auxiliary driving device using the height adjustment mechanism comprises a base, a hook-shaped one-way lever, a decoupling lever, a throttle connecting rod assembly, a brake connecting rod assembly and the height adjustment mechanism;

[0026] The throttle linkage assembly is hinged to the upper part of the hook-type one-way lever, and the front end is fixedly connected to the main brake pedal of the motor vehicle. The rear end of the throttle linkage assembly is hinged to the lower part of the hook-type one-way lever, and the front end is fixedly connected to the main throttle pedal of the motor vehicle.

[0027] The handle of the height adjustment mechanism pushes the operating lever of the height adjustment mechanism to swing forward, and then the brake link assembly applies force forward to press the main brake pedal to realize the braking state, and at the same time the throttle link assembly extends without force; the handle pulls the operating lever to swing backward, and then the unhooking lever pulls the hook-shaped one-way lever to rotate through the round pin embedded in the hook groove, pushing the throttle link assembly to apply force forward to press the main throttle pedal to realize the throttle state, and at the same time the brake link assembly extends without force; the unhooking lever is pulled so that the round pin is disengaged from the hook groove of the hook-shaped one-way lever, and the operating lever is pulled backward to be horizontal by the handle to realize the disengaged state; the handle lifts the operating lever so that the round pin of the unhooking lever moves along the back side of the hook-shaped one-way lever under the tension of the tension spring, and finally is embedded in the hook groove and connected with the hook-shaped one-way lever to realize the parking state; the height adjustment of the disabled auxiliary driving device is realized by the height adjustment mechanism.

[0028] Compared with existing manual driving devices for disabled people, the beneficial technical effects of the present invention are as follows:

[0029] 1. The technical difficulty of synchronously adjusting the height of the handle and the brake locking mechanism is solved, so that the height of the handle can be adjusted during use after the disabled auxiliary driving device is installed, which has the advantages of convenient installation and easy adjustment.

[0030] 2. The disabled assistive driving device with adjustable handle height can adapt to the needs of disabled drivers with different physical conditions, improve the comfort of operation, and has the advantages of easy operation and wide adaptability.

[0031] 3. The present invention provides an adaptive manufacturing method for the height adjustment mechanism, which ensures the reliable performance of the disabled driver assistance device and has the advantages of easy manufacturing and feasibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the prior art.

[0033] Figure 2 It is a structural schematic diagram of the present invention.

[0034] Figure 3 yes Figure 2 AA cross-sectional view.

[0035] Figure 4 yes Figure 3 BB cross-sectional view.

[0036] Figure 5 It is a structural stereogram of the upper pull rod, the lower pull rod and the side pull pin.

[0037] Figure 6 It is a schematic diagram of the assistive driving device for the disabled of the present invention.

[0038] In the figure, 1-handle, 2-hook-type one-way lever, 3-throttle linkage assembly, 4-brake linkage assembly, 5-unhooking lever, 6-base, 7-joystick, 101-button, 102-pull rod, 103-reset compression spring assembly, 104-pawl, 105-ratchet, 106-pawl shaft, 111-handle tube, 112-fixing tube, 121-first handle tube positioning hole, 122-second handle tube positioning hole, 123-third handle tube positioning hole, 300-side pull pin, 301-lower pull rod, 302-connecting rod, 303-connecting plate, 304-upper pull rod, 306-preload spring, 310-side pull pin fixing plate, 311-first pull rod positioning hole, 312-second pull rod positioning hole, 313-third pull rod positioning hole, 400-rear pull pin. DETAILED DESCRIPTION

[0039] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited to the following embodiments. Any equivalent changes and modifications made based on the contents of this specification fall within the technical scope of the present invention's patent application.

[0040] The present invention is installed on a disabled person's auxiliary driving device and is used to achieve height adjustment of the device operation to adapt to the driving operation of the car by people with lower limb disabilities in different conditions.

[0041] Example 1

[0042] See also Figure 2 The height adjustment mechanism is installed on the base 6 of the disabled auxiliary driving device, and includes a handle 1, a button 101, a joystick 7, an upper pull rod 304, a lower pull rod 301, a side pull pin 300, a connecting rod 302, a connecting plate 303, a reset spring assembly 103, a pawl 104, a ratchet 105, a handle tube 111, a fixing tube 112 and a rear pull pin 400.

[0043] The joystick 7 is an upright plate, the bottom of which is hinged to the base 6 through a pin, and the joystick 7 can rotate around the pin; the joystick 7 is respectively connected to the brake linkage assembly 4 and the throttle linkage assembly 3 of the disabled auxiliary driving device to operate the brake and throttle.

[0044] The button 101 is mounted on the handle 1 and is used by the driver to press and operate the brake locking mechanism of the disabled assistive driving device. The button 101 can be reset after being released.

[0045] The handle 1 is fixedly connected to the upper end of the handle tube 111, and the fixing tube 112 is vertically fixed to the front side of the joystick 7. The handle tube 111 and the fixing tube 112 are both tubular components. The handle tube 111 is coaxially inserted into the tube cavity of the fixing tube 112 and can slide up and down therein. The tube wall of the fixing tube 112 is provided with a pin hole for inserting the rear pull pin 400. Figure 3The side of the handle tube 111 facing the joystick 7 is provided with a first handle tube positioning hole 121, a second handle tube positioning hole 122 and a third handle tube positioning hole 123 from top to bottom, which are used to adjust the position of the handle tube 111; the rear pull pin 400 is provided on the rear side surface of the joystick 7. The rear pull pin 400 is an elastic pin and there is always inward pressure. When it is in a naturally elastic state, the pin body of the rear pull pin 400 passes through the through hole on the joystick 7 and the pin hole on the fixed tube 112, and can be inserted into the first handle tube positioning hole 121, the second handle tube positioning hole 122 or the third handle tube positioning hole 123 to fix the relative position of the handle tube 111 and the fixed tube 112. When the height of the handle 1 needs to be adjusted, the driver can pull out the rear pull pin 400, and the handle tube 111 can slide freely up and down in the fixed tube 112 to adjust the height. After the height is adjusted to the appropriate level, the rear pull pin 400, under the action of its own elastic force, is inserted into the first handle tube positioning hole 121, the second handle tube positioning hole 122, or the third handle tube positioning hole 123, fixing the relative position of the handle tube 111 and the fixed tube 112, thereby adjusting the handle 1 on the handle tube 111 to the appropriate height and fixing it. The handle tube 111, the fixed tube 112, and the rear pull pin 400 form a handle height adjustment mechanism.

[0046] Please refer to Figure 4 and Figure 5The upper rod 304 is a round rod, the upper portion of which is connected to the button 101. The lower rod 301 is a tubular fitting connected to the lower portion of the upper rod 304. The lower rod 301 is inserted into the lumen of the handle tube 111. The upper rod 304 is inserted into the lumen of the lower rod 301 and can slide up and down therein. The upper rod 304 is provided with a first rod positioning hole 311, a second rod positioning hole 312, and a third rod positioning hole 313 from top to bottom, for inserting the side pin 300 to adjust the connection position between the upper rod 304 and the lower rod 301. The first rod positioning hole 311, the second rod positioning hole 312, and the third rod positioning hole 313 are through holes along the radial direction of the upper rod 304. The side pin 300 is fixed to the side of the lower tie rod 301 via a side pin fixing plate 310. It passes through the tube wall of the lower tie rod 301 and presses against the upper tie rod 304. The side pin 300 is an elastic pin and is always under inward pressure. When in a naturally elastic state, the pin body of the side pin 300 can be inserted into the first tie rod positioning hole 311, the second tie rod positioning hole 312, or the third tie rod positioning hole 313 to securely connect the upper tie rod 304 to the lower tie rod 301. When the length of the tie rod needs to be adjusted, the driver can pull out the side pin 300, and the upper tie rod 304 can slide freely up and down in the lower tie rod 301. After the length is adjusted to the desired length, the side pin 300, under the action of its own elastic force, is inserted into the first tie rod positioning hole 311, the second tie rod positioning hole 312, or the third tie rod positioning hole 313, securely connecting the upper tie rod 304 to the lower tie rod 301. The upper pull rod 304 , the lower pull rod 301 and the side pull pin 300 form a pull rod length adjustment mechanism.

[0047] See also Figure 2The ratchet 105 is a fan-shaped component fixed to the base 6, with its teeth tilted forward. The middle portion of the pawl 104 is hinged to the operating lever 7 on the upper side of the ratchet 105 via a pawl shaft 106, and is capable of rotating about the hinge point. The claw tip at one end of the pawl 104 faces backward and can be disengaged from or engaged with the teeth of the ratchet 105. The lower end of the connecting piece 303 is connected to the other end of the pawl 104. The lower end of the connecting rod 302 is connected to the upper end of the connecting piece 303, and the upper end is connected to the lower portion of the lower pull rod 301. The return spring assembly 103 is fixed to the operating lever 7 and is internally provided with a preload spring 306. The connecting rod 302 passes through the return spring assembly 103. The preload spring 306 applies a downward force to the connecting rod 302, ensuring that the connecting rod 302 pulls the lower rod 301 tightly, so that the upper rod 304 is always in contact with the button 101, waiting for the button force to be transmitted. At the same time, under normal circumstances, the pawl 104 is kept disengaged from the ratchet 105. Driven by the pressing of the button 101, the upper rod 304 pulls the lower rod 301 to slide in the tubular cavity of the handle tube 111 in the vertical direction, and then drives the pawl 104 to rotate about the pawl shaft 106 through the connecting rod 302 and the connecting piece 303, so that the pawl 104 engages with the ratchet 105, achieving the locking state of the brake state and achieving the parking function of the vehicle.

[0048] The method and steps for adjusting the handle height of the disabled assistive driving device by using the height adjustment mechanism are as follows:

[0049] 1) When you need to adjust the height of the handle 1, please refer to Figure 2 、 Figure 3 and Figure 4 First, the side pull pin 300 is pulled out of the side pull pin fixing plate 310 and placed on the side surface of the lower pull rod 301. The side pull pin 300 is out of the positioning hole, so that the upper pull rod 304 and the lower pull rod 301 are in a non-fixed free state. The upper pull rod 304 can slide freely up and down in the tubular cavity of the lower pull rod 301. At this time, the connecting rod 302 connected to the lower pull rod 301 is pressed and limited by the return compression spring assembly 103 and will not move with the upper pull rod 304. Therefore, the pawl 104 remains disengaged from the ratchet 105.

[0050] 2) Rotate the rear pull pin 400 forward and pull it out, so that the rear pull pin 400 is dislocated, and the handle tube 111 is in a free state without being connected to the fixed tube 112 and the joystick 7. At this time, manually pushing and pulling the handle 1 can link the handle tube 111 to slide in the up and down direction within the lumen of the fixed tube 112;

[0051] 3) Reversely rotate and release the rear pull pin 400 so that it is in a naturally compressed state, then slide the handle tube 111 to a suitable height position so that the first handle tube positioning hole 121, the second handle tube positioning hole 122, or the third handle tube positioning hole 123 of the handle tube 111 is aligned with the rear pull pin 400 on the joystick 7. The rear pull pin 400 can then be inserted into the corresponding positioning hole, thereby fixing the relative position of the handle tube 111 and the joystick 7, and at the same time, the height of the handle 1 is adjusted and fixed;

[0052] 4) Release the side pull pin 300 so that the side pull pin 300 is in a naturally spring-loaded state, press the button 101 on the handle 1, and when the upper pull rod 304 slides to a suitable position, the first pull rod positioning hole 311, the second pull rod positioning hole 312 or the third pull rod positioning hole 313 will be aligned with the side pull pin 300 on the lower pull rod 301, and the side pull pin 300 can be inserted into the corresponding positioning hole under the action of its own elastic force, and the upper pull rod 304 and the lower pull rod 301 are re-fixed and connected, thereby completing the adjustment of the pull rod length, that is, completing the synchronous adjustment of the handle and brake locking mechanism height of the disabled auxiliary driving device.

[0053] In order to ensure the synchronous adjustment of the height of the fixed handle and the length of the pull rod in the brake locking mechanism, it is necessary to ensure that the handle tube 111 and the fixed tube 112 and the upper pull rod 304 and the lower pull rod 301 can be simultaneously fixed with the pins after adjustment. This requires the relative position of the side pull pin 300 and the rear pull pin 400, the relative position of the first handle tube positioning hole 121 and the first pull rod positioning hole 311, the relative position of the second handle tube positioning hole 122 and the second pull rod positioning hole 312, and the relative position of the third handle tube positioning hole 123 and the third pull rod positioning hole 314. The relative positions of the three pull rod positioning holes 313 meet the one-to-one corresponding conditions, so as to ensure the realization of the adjustment function; in other words, when the rear pull pin 400 is inserted into the first handle tube positioning hole 121, the side pull pin 300 is exactly aligned with the first pull rod positioning hole 311; when the rear pull pin 400 is inserted into the second handle tube positioning hole 122, the side pull pin 300 is exactly aligned with the second pull rod positioning hole 312; when the rear pull pin 400 is inserted into the third handle tube positioning hole 123, the side pull pin 300 is exactly aligned with the third pull rod positioning hole 313.

[0054] In order to ensure that the height adjustment mechanism can achieve the function of synchronously adjusting the height of the handle and the brake locking mechanism after the height adjustment mechanism is completed, in addition to calculating the precise position and size of each positioning hole during the design and development stage, an adaptation method can also be used to determine the position of the positioning holes and complete the processing during the manufacturing process to ensure that the disabled auxiliary driving device can reliably achieve the operation of synchronously adjusting the height of the handle and the brake locking mechanism. The adaptation manufacturing method of the height adjustment mechanism includes the following specific contents:

[0055] 1) Assembling the unfinished upper rod 304 with other components that have completed all the manufacturing processes to form a height adjustment mechanism. Except for the first rod positioning hole 311, the second rod positioning hole 312, and the third rod positioning hole 313, the rest of the upper rod 304 has completed the manufacturing process. At this time, the upper rod 304 is inserted into the lower rod 301 and is not connected to the lower rod 301. At the same time, due to the action of the return compression spring assembly 103, the pawl 104 and the ratchet 105 are in a disengaged state;

[0056] 2) Using the handle 1, pull the handle tube 111 to slide within the fixed tube 112, so that the rear pull pin 400 is inserted into the first handle tube positioning hole 121 on the handle tube 111 under its own elastic force. Then, the side pull pin 300 is removed, and the position of the first pull rod positioning hole 311 is marked on the surface of the upper pull rod 304 through the mounting hole of the side pull pin 300.

[0057] 3) Pull the rear pull pin 400 out of the first handle tube positioning hole 121, and then repeat step 2). With the rear pull pin 400 inserted into the second handle tube positioning hole 122 and the third handle tube positioning hole 123, respectively, mark the positions of the second pull rod positioning hole 312 and the third pull rod positioning hole 313 on the surface of the upper pull rod 304.

[0058] 4) Remove the upper rod 304 and drill the first rod positioning hole 311 , the second rod positioning hole 312 , and the third rod positioning hole 313 on the upper rod 304 according to the marked positions of the first rod positioning hole 311 , the second rod positioning hole 312 , and the third rod positioning hole 313 ;

[0059] 5) The upper pull rod 304 that has completed the processing content of step 4) is reassembled with other components that have completed all the processing and manufacturing processes to form a height adjustment mechanism.

[0060] Example 2

[0061] See also Figure 6The figure shows that the disabled person's auxiliary driving device is installed on the floor of the main driver's compartment of the motor vehicle, including a base 6, a hook-type one-way lever 2, a decoupling lever 5, a throttle linkage assembly 3, a brake linkage assembly 4 and a height adjustment mechanism.

[0062] The base 6 is provided with a plurality of mounting holes and is fixed to the bottom plate of the main driving compartment.

[0063] The height adjustment mechanism is the height adjustment mechanism described in Example 1, which is installed on the base 6 and includes a handle 1, a button 101, a joystick 7, an upper pull rod 304, a lower pull rod 301, a side pull pin 300, a connecting rod 302, a connecting plate 303, a reset spring assembly 103, a pawl 104, a ratchet 105, a handle tube 111, a fixed tube 112 and a rear pull pin 400.

[0064] The hook-shaped one-way lever 2 is a lever member with a hook, a hook groove opening forward on the upper part, a middle part hinged to the vertical plate at the front part of the base 6, and the hook-shaped one-way lever 2 can rotate around the hinge point.

[0065] The middle part of the unhooking lever 5 is hinged to the lower part of the operating lever 7 and can rotate. The rear part of the unhooking lever 5 is a manual operating handle, and the front part is riveted with a round pin, which can be embedded in the hook groove on the upper part of the hook-type one-way lever 2; the part between the hinge point of the unhooking lever 5 and the round pin is connected to the operating lever 7 through a tension spring, which can pull the unhooking lever 5 to rotate and press the round pin at its front toward the hook-type one-way lever 2.

[0066] The rear end of the brake linkage assembly 4 is hinged to the upper part of the operating lever 7, and the front end is fixedly connected to the main brake pedal. The rear end of the throttle linkage assembly 3 is hinged to the lower part of the hook-shaped one-way lever 2, and the front end is fixedly connected to the main throttle pedal.

[0067] The working process of the disabled driver assistance device is as follows: Figure 6 :

[0068] Braking status——

[0069] Pushing the handle 1 forward causes the joystick 7 to swing forward, applying force forward through the brake linkage assembly 4. This disengages the round pin at the front end of the unhooking lever 5 from the hook slot of the hook-shaped one-way lever 2. The brake linkage assembly 4 applies force forward to the main brake pedal, depressing it to achieve braking. Simultaneously, the throttle linkage assembly 3 retracts, leaving it in a force-free state, and the main throttle pedal is in its initial free state. After braking is complete, pressing the button 101 overcomes the downward force of the return spring assembly 103, pulling up the connecting piece 303 and causing the pawl 104, with its tip facing backward, to engage with the ratchet 105, with its teeth facing forward, preventing the joystick 7 from further swinging, thereby locking the vehicle's brakes.

[0070] Throttle status——

[0071] The handle 1 is used to push the operating lever 7 forward again. Under the downward force of the return compression spring assembly 103, the pawl 104 disengages from the ratchet 105, releasing the brake lock state; then the handle 1 is pulled backward to make the operating lever 7 swing backward, and the round pin of the unhooking lever 5 is embedded in the hook groove of the hook-type one-way lever 2, so that the operating lever 7 rotates the hook-type one-way lever 2 through the unhooking lever 5, and then the hook-type one-way lever 2 pushes the throttle linkage assembly 3 forward to apply force, and the throttle linkage assembly 3 applies force to the main throttle pedal forward, pressing the main throttle pedal to realize the throttle state. At the same time, the brake linkage assembly 4 retracts and is in a state of no force, and the main brake pedal is in an initial free state.

[0072] Disconnected state——

[0073] Push the joystick 7 forward with the handle 1 to disengage the pawl 104 from the ratchet 105. Simultaneously, pull the unhooking lever 5 to disengage its round pin from the hook groove of the hook-shaped one-way lever 2. Continue pulling the handle 1 backward to swing the joystick 7 backward to a horizontal position, achieving the disengagement state. Simultaneously, the brake linkage assembly 4 and the throttle linkage assembly 3 are both in a state of no force applied, and the main brake pedal and main throttle pedal are both in an initial free state.

[0074] Parking status——

[0075] By lifting the joystick 7 via the handle 1, the round pin of the unhooking lever 5, under the tension of the tension spring, moves against the back side of the hook-shaped one-way lever 2 and eventually engages in the hook groove of the hook-shaped one-way lever 2, connecting the hook-shaped one-way lever 2 and the unhooking lever 5, thereby achieving the parking state. At this point, the brake linkage assembly 4 and the throttle linkage assembly 3 are both in a non-acting state, and the main brake pedal and the main throttle pedal are both in their initial free state.

[0076] Handle height adjustment process—

[0077] The method and process for adjusting the handle height of the disabled assistive driving device through the height adjustment mechanism as described in Example 1.

[0078] The protection scope of the present invention is not limited to the above-mentioned embodiments, but should also include other obvious changes and alternatives to the present invention.

Claims

1. A height adjustment mechanism for a disabled person's assistive driving device, mounted on a base of the disabled person's assistive driving device, comprising a handle, a button, a joystick, a connecting rod, a connecting piece, a return spring assembly, a pawl, and a ratchet, wherein: The operating lever is hinged on the base and can rotate, the ratchet is fixed on the base, the pawl is hinged on the operating lever and can rotate to engage with the ratchet, the lower end of the connecting piece is connected to the upper end of the pawl, and the upper end is connected to the connecting rod, the reset spring assembly is fixed on the operating lever, and a pre-loaded spring is provided inside. The connecting rod passes through the reset spring assembly, and the pre-loaded spring always applies a downward force to the connecting rod to keep the pawl and the ratchet disengaged under normal conditions; the characteristic is that the height adjustment mechanism also includes an upper pull rod, a lower pull rod, a side pull pin, a handle tube, a fixed tube and a rear pull pin; The handle tube and the fixed tube are both tubular components, the fixed tube is vertically fixed to the front side of the joystick, the handle tube is coaxially inserted into the tube cavity of the fixed tube and can slide up and down therein, the handle is fixedly connected to the upper end of the handle tube, and the side of the handle tube facing the joystick is provided with a first handle tube positioning hole, a second handle tube positioning hole and a third handle tube positioning hole from top to bottom, which are used for positioning the handle tube for position adjustment, the rear pull pin is an elastic pin, which is provided on the rear side of the joystick, and when in a naturally elastic state, the pin body of the rear pull pin can be inserted into the first handle tube positioning hole, the second handle tube positioning hole or the third handle tube positioning hole to fix the relative position of the handle tube and the fixed tube; The lower pull rod is a tube fitting, which is inserted into the tubular cavity of the handle tube; the upper pull rod is a round rod, the upper part of which is connected to the button, which is installed on the handle and can be reset after being released; the upper pull rod is inserted into the tubular cavity of the lower pull rod and can slide up and down therein, and the lower part is connected to the lower pull rod; the upper pull rod is provided with a first pull rod positioning hole, a second pull rod positioning hole and a third pull rod positioning hole from top to bottom, for inserting the side pull pin to adjust the connection position of the upper pull rod and the lower pull rod; the side pull pin is an elastic pin, which is fixed to the side of the lower pull rod by a side pull pin fixing plate and passes through the tubular wall of the lower pull rod to press against the upper pull rod; when in a naturally elastic state, the pin body of the side pull pin can be inserted into the first pull rod positioning hole, the second pull rod positioning hole or the third pull rod positioning hole to fix the upper pull rod and the lower pull rod.

2. The height adjustment mechanism of the disabled assistive driving device according to claim 1, characterized in that: The relative positions of the side pull pin and the rear pull pin, the relative positions of the first handle tube positioning hole and the first pull rod positioning hole, the relative positions of the second handle tube positioning hole and the second pull rod positioning hole, and the relative positions of the third handle tube positioning hole and the third pull rod positioning hole are in a one-to-one correspondence. When the rear pull pin is inserted into the first handle tube positioning hole, the side pull pin is exactly aligned with the first pull rod positioning hole. When the rear pull pin is inserted into the second handle tube positioning hole, the side pull pin is exactly aligned with the second pull rod positioning hole. When the rear pull pin is inserted into the third handle tube positioning hole, the side pull pin is exactly aligned with the third pull rod positioning hole.

3. A method for adjusting the height of a disabled person's assistive driving device using the height adjustment mechanism of claim 1, characterized in that: The height adjustment method comprises the following specific steps: 1) Pulling the side pull pin out of position, so that the upper pull rod and the lower pull rod are in a free state and can slide up and down relative to each other, while the pawl remains disengaged from the ratchet wheel; 2) Pulling the rear pull pin out of position puts the handle tube, the fixed tube, and the joystick in a free state without being connected. When the handle is manually pushed or pulled, the handle tube can be linked to slide in the up-and-down direction within the lumen of the fixed tube; 3) releasing the rear pull pin to a naturally compressed state, and then sliding the handle tube to a suitable height position, so that the rear pull pin is inserted into the first handle tube positioning hole, the second handle tube positioning hole, or the third handle tube positioning hole of the handle tube under the action of its own elastic force, thereby fixing the relative position of the handle tube and the joystick, and achieving adjustment and fixation of the handle height; 4) Release the side pull pin to put it in a naturally spring-loaded state, press the button on the handle, and when the upper pull rod slides to a suitable position, the side pull pin is inserted into the first pull rod positioning hole, the second pull rod positioning hole or the third pull rod positioning hole of the upper pull rod under the action of its own elastic force, thereby re-fixing the upper pull rod and the lower pull rod to complete the adjustment of the pull rod length, thereby completing the synchronous adjustment of the handle and brake locking mechanism height of the disabled auxiliary driving device.

4. A method for manufacturing the height adjustment mechanism of the disabled driver assistance device according to claim 1, characterized in that: During the manufacturing process, an adaptation method is used to determine the position of the positioning hole and complete the processing to ensure that the disabled auxiliary driving device can reliably achieve the function of highly synchronous adjustment of the handle and the brake locking mechanism, which specifically includes the following specific steps: 1) Assembling an unfinished upper rod with other components that have completed all manufacturing processes to form a height adjustment mechanism, wherein, except for the first rod positioning hole, the second rod positioning hole, and the third rod positioning hole, which have not yet been machined, the remaining parts of the upper rod have completed the machining process. After the assembly is completed, the upper rod is inserted into the lower rod and is not connected to the lower rod. At the same time, due to the action of the return compression spring assembly, the pawl and the ratchet are in a disengaged state; 2) Pulling the handle tube to slide within the fixed tube by the handle, so that the rear pull pin is inserted into the first handle tube positioning hole on the handle tube under the action of its own elastic force, and then removing the side pull pin. Marking the position of the first pull rod positioning hole on the surface of the upper pull rod through the mounting hole of the side pull pin; 3) Pull the rear pull pin out of the first handle tube positioning hole, and then repeat step 2), and in this manner, with the rear pull pin respectively inserted into the second handle tube positioning hole and the third handle tube positioning hole, mark the positions of the second pull rod positioning hole and the third pull rod positioning hole on the surface of the upper pull rod; 4) Remove the upper rod and, based on the marked positions of the first, second, and third rod positioning holes, machine the first, second, and third rod positioning holes on the upper rod; 5) Reassemble the upper pull rod that has completed the processing content described in step 4) and other components that have completed all the processing and manufacturing processes into a height adjustment mechanism.

5. A disabled person assistive driving device using the height adjustment mechanism according to claim 1, characterized in that: The disabled person's auxiliary driving device comprises a base, a hook-shaped one-way lever, a decoupling lever, a throttle connecting rod assembly, a brake connecting rod assembly and the height adjustment mechanism; The throttle linkage assembly is hinged to the upper part of the hook-type one-way lever, and the front end is fixedly connected to the main brake pedal of the motor vehicle. The rear end of the throttle linkage assembly is hinged to the lower part of the hook-type one-way lever, and the front end is fixedly connected to the main throttle pedal of the motor vehicle. The handle of the height adjustment mechanism pushes the operating lever of the height adjustment mechanism to swing forward, and then the brake link assembly applies force forward to press the main brake pedal to realize the braking state, and at the same time the throttle link assembly extends without force; the handle pulls the operating lever to swing backward, and then the unhooking lever pulls the hook-shaped one-way lever to rotate through the round pin embedded in the hook groove, pushing the throttle link assembly to apply force forward to press the main throttle pedal to realize the throttle state, and at the same time the brake link assembly extends without force; the unhooking lever is pulled so that the round pin is disengaged from the hook groove of the hook-shaped one-way lever, and the operating lever is pulled backward to be horizontal by the handle to realize the disengaged state; the handle lifts the operating lever so that the round pin of the unhooking lever moves along the back side of the hook-shaped one-way lever under the tension of the tension spring, and finally is embedded in the hook groove and connected with the hook-shaped one-way lever to realize the parking state; the height adjustment of the disabled auxiliary driving device is realized by the height adjustment mechanism.

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