Accelerator protection device for disabled refitted vehicle with left-extending operating mechanism

Abstract

The utility model discloses an accelerator protection device for a disabled refitted vehicle with a left-extending operating mechanism. The accelerator protection device comprises a base component, an adjustable connecting component and a rotatable shielding component, wherein the base part is connected with the adjustable connecting part and plays a role in limiting and guiding the rotatable shielding part, the front portion of the adjustable connecting part is connected with the base part, the rear portion of the adjustable connecting part is fixedly connected with a position adjusting sliding groove of a driving seat, and the rotatable shielding part is rotatably connected to the base part and can move in the X direction. Consequently, conversion between the limiting position and the storage position is achieved. When the rotatable shielding part is located at the limiting position on the base part, the accelerator is shielded, protection on the accelerator is achieved, and when the rotatable shielding part moves in the X direction and rotates to the storage position, shielding on the accelerator is relieved. The accelerator is reliably shielded, state switching between normal person operation and disabled person operation can be conveniently carried out, the safety of the disabled person refitted vehicle with the left-delay operation mechanism is improved, and the left-delay operation mechanism has the advantages of being simple in structure, convenient to install, high in reliability, convenient and fast to switch and wide in application range.

Description

Technical Field

[0001] This utility model relates to a safety protection device for vehicles for disabled persons, specifically a throttle protection device for a modified vehicle for disabled persons with a left-hand operating mechanism, belonging to the field of automotive technology. Background Technology

[0002] Current advanced automotive technology enables vehicle control systems to fully meet the needs of people with physical disabilities. Those with lower limb disabilities who meet the regulations and obtain a C5 driver's license, and whose vehicles are equipped with assistive driving devices for disabled drivers, can legally drive on the road.

[0003] Self-driving cars used by disabled people are rarely supplied directly by car manufacturers. They are usually modified based on general-purpose models purchased from suppliers. For disabled people who have only lost the function of their right foot, their left foot can still be used to operate the accelerator and brake. Therefore, ordinary cars modified for right lower limb disabilities usually only need to be equipped with a driving control device operated by the left foot to meet the requirements. This left-foot-operated driving control device is usually called a "left-foot operating mechanism". Figure 1 The diagram shows an existing retractable left-hand control device, A, mounted on the vehicle body B. When a disabled driver presses down on pedal A1 with their left foot, the rotational motion is transmitted to shaft A3 via drive shaft A2, thereby controlling the accelerator C. The left-hand control device A can be flipped up and retracted, disengaging from the accelerator C, allowing the vehicle to return to a normal driving state. Figure 2 This is a diagram showing the storage status of the device.

[0004] This type of modified vehicle for disabled persons, equipped with a left-extended operating mechanism, solves the problem of right-legged disabled individuals operating the car with their left foot. However, it also introduces a safety hazard: when the vehicle is in the disabled person's operating mode, their cane, crutch, or right lower limb prosthesis may accidentally touch the accelerator pedal (C), leading to accidental operation of the accelerator pedal (C) without the left foot being used, resulting in vehicle misoperation and potentially causing an accidental traffic accident. To address this technical problem, left-extended operating devices with accelerator pedal protection functions have appeared on the market. Chinese Patent CN204172700U discloses a "Ready-to-use Left-Foot Accelerator Extension Assist Pedal," see [link to patent]. Figure 3The device features an anti-touch blocking pedal to prevent accidental misoperation. However, it has a drawback: the anti-touch blocking pedal is fixed. When the modified vehicle needs to be returned to normal driving mode, the device, along with the anti-touch blocking pedal, must be removed from the vehicle. Then, to allow a disabled person to drive again, the delayed accelerator pedal must be reinstalled. This cumbersome process makes switching between normal and disabled driving modes extremely difficult, time-consuming, labor-intensive, and inflexible. Therefore, it suffers from limited applicability, operational difficulties, and inflexible mode transitions. Summary of the Invention

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a throttle protection device for a modified vehicle for disabled persons with a left-hand operating mechanism. When operated by a disabled person, the device reliably blocks the throttle to prevent accidental throttle misoperation caused by accidental contact, eliminates safety hazards of the modified vehicle for disabled persons, and can be stored away immediately, allowing the vehicle to easily switch between normal and disabled operation modes, achieving reliable protection, convenient state switching, and wide applicability.

[0006] Based on the above objectives, the technical solution adopted by this utility model to solve its technical problem is as follows:

[0007] A throttle protection device for a modified vehicle for disabled persons with a left-hand operating mechanism is installed below the driver's seat, which is provided with a position adjustment slide. The modified vehicle for disabled persons is provided with an accelerator and a brake. The throttle protection device is characterized in that it includes a base component, an adjustable connecting component, and a rotatable shielding component.

[0008] The base component is disposed on the floor below the accelerator and connected to the adjustable connecting component. It can limit and guide the rotatable shielding component. The front part of the adjustable connecting component is connected to the base component, and the rear part is fixedly connected to the lower part of the driver's seat position adjustment slide. It has the function of adjusting and changing the connection direction and position in three-dimensional space. The rotatable shielding component is used to shield the accelerator to prevent contact. It is rotatably connected to the base component and can move along the X direction of the base component to realize the conversion between the limiting position and the storage position.

[0009] When the rotatable shielding component is in the limited position on the base component, it blocks the throttle, thus providing reliable protection for the throttle in the operation state of the disabled. When the rotatable shielding component moves along the X direction and rotates to the retracted position, it releases the shielding of the throttle, realizing the conversion of the modified vehicle for the disabled from the operation state of the disabled to the operation state of the normal person.

[0010] As a further improvement, the base component includes a base plate support and a limiting bushing. The limiting bushing is horizontally welded to the base plate support and its axis is along the X direction. A limiting groove for limiting and guiding is provided near the end of the limiting bushing. The limiting groove penetrates the tube wall of the limiting bushing and is arranged along the X direction. The outer end opens at the end of the limiting bushing, and the inner end is a blind end.

[0011] The rotatable blocking component includes a throttle baffle and a limiting shaft. The limiting shaft passes through the limiting shaft sleeve of the base component and can slide in the limiting shaft sleeve along the X direction. The throttle baffle is used to block the throttle, is welded to the inner end of the limiting shaft and its plane is along the axial direction of the limiting shaft. The outer end of the limiting shaft is radially protruding and fixed with a limiting pin. The limiting pin is embedded in the limiting groove and slides under the guidance of the limiting groove.

[0012] When the limiting shaft slides to the right along the X direction within the limiting sleeve, and the limiting pin slides to the innermost blind end under the guidance of the limiting groove, the limiting shaft and the limiting sleeve are in a limiting position, and the throttle baffle is positioned to block the throttle, thus the throttle protection device is in a protective state; when the limiting shaft slides to the left along the X direction within the limiting sleeve, and the limiting pin slides out of the opening end of the limiting groove under the guidance of the limiting groove and then disengages from the limiting groove, the throttle baffle rotates backward around the axis of the limiting sleeve with the limiting shaft to a retracted position, no longer blocking the throttle, thus the throttle protection device is in a retracted state, and the disabled person's modified vehicle is converted to a normal person's operating state.

[0013] As a further improvement, the limiting groove is a straight groove along the axis of the limiting bushing.

[0014] As a further improvement, the limiting groove is a "Z"-shaped through groove, including an inner straight groove, a circular arc groove, and an outer straight groove. The inner straight groove is arranged along the axial direction of the limiting sleeve, and its inner end is a blind end. The outer straight groove is arranged along the axial direction of the limiting sleeve, parallel to the inner straight groove but not on the same straight line. The outer end of the outer straight groove opens at the end of the limiting sleeve. The circular arc groove is arranged along the cross-section of the limiting sleeve, with one end connected to the outer end of the inner straight groove and the other end connected to the inner end of the outer straight groove.

[0015] As a further improvement, the inner side of the arc groove is fitted with a rubber layer to increase friction.

[0016] As a further improvement, the thickness of the rubber layer plus the diameter of the limiting pin is slightly larger than the width of the limiting groove.

[0017] As a further improvement, the adjustable connecting component includes a seat connecting bracket, a Y-axis connecting plate, a Z-axis connecting plate, and an X-axis connecting bracket connected sequentially from back to front; the seat connecting bracket is fixed to the lower part of the position adjustment slide F by screws, the X-axis connecting bracket is connected to the base plate bracket, the seat connecting bracket, the Y-axis connecting plate, and the X-axis connecting bracket are right-angle bent plates with elongated holes to change the direction and length of the connection, and the Y-axis connecting plate and the Z-axis connecting plate have multiple threaded holes to change the height of the connection.

[0018] Compared with the prior art, the throttle protection device for the left-hand operating mechanism of the modified vehicle for disabled persons described in this utility model has the following beneficial effects:

[0019] 1. By moving the limit pin to the right to the blind end of the limit groove, the limit shaft and the limit bushing are in the limit position, so that the throttle baffle can block the throttle. This achieves reliable protection of the throttle in the modified vehicle for disabled persons with the left extension operating mechanism installed, avoids accidental throttle misoperation caused by accidental contact, eliminates safety hazards of the modified vehicle for disabled persons, and improves safety.

[0020] 2. By moving the limit pin to the left and disengaging it from the opening end of the limit groove, the limit shaft drives the throttle baffle to rotate to the storage position, thereby removing the obstruction to the throttle. This enables the modified vehicle for disabled people to switch from the operation mode of disabled people to the operation mode of normal people, achieving an instant and flexible switching of driving mode. This allows the vehicle to achieve the effect of dual-use for disabled driving and normal driving, and features convenient operation and wide applicability.

[0021] 3. The "Z"-shaped limiting groove prevents the limiting pin from easily slipping out of the limiting groove, ensuring that the throttle baffle and the limiting shaft can be reliably in the limiting position, thus improving the performance reliability of the throttle protection device.

[0022] 4. The inner side of the arc groove of the limiting groove is provided with a rubber layer, and the thickness of the rubber layer plus the diameter of the limiting pin is slightly larger than the width of the limiting groove. The elasticity and friction of the rubber do not affect the movement of the limiting shaft, and can prevent the limiting pin from continuing to slide outward along the limiting groove, thereby avoiding the influence of vehicle vibration and further improving the reliability of the throttle protection device.

[0023] 5. The adjustable connecting parts have an adjustable function, which can change the length, direction, position, etc. of the connection, thus facilitating the installation of the throttle protection device and making it flexible to adapt to the installation of various vehicle models, with wide adaptability.

[0024] 6. This utility model utilizes the position adjustment slide under the driver's seat to fix and connect the throttle protection device. The adjustable connecting component is the only connection and fixing structure between the throttle protection device and the car. Therefore, there is no need to drill holes or weld on the inner wall of the car body during installation, which realizes the non-destructive installation of the device in the car body and avoids damage to the car body.

[0025] In summary, this utility model reliably blocks the throttle, preventing accidental throttle misoperation. It also allows for convenient switching between operation by able-bodied individuals and disabled individuals, improving the safety of modified vehicles for disabled persons equipped with a left-hand operating mechanism. It has the advantages of simple structure, convenient installation, high reliability, easy switching, and wide applicability. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the left extension operating mechanism.

[0027] Figure 2 yes Figure 1 A diagram showing the collection status.

[0028] Figure 3 This is a schematic diagram of existing technology.

[0029] Figure 4 This is a schematic diagram of the structure of this utility model.

[0030] Figure 5 This is a schematic diagram showing the connection between the base component and the rotatable shielding component.

[0031] Figure 6 This is a diagram showing the limiting state of the limiting bushing and the limiting shaft.

[0032] Figure 7 This is a diagram showing the stored state of the limiting bushing and the limiting shaft.

[0033] Figure 8 This is the front view of the seat connecting bracket.

[0034] Figure 9 yes Figure 8 The left view.

[0035] Figure 10 This is the front view of the Y-axis connecting plate.

[0036] Figure 11 yes Figure 10 The left view.

[0037] Figure 12 This is the front view of the Z-axis connecting plate.

[0038] Figure 13 This is the front view of the X-axis connecting bracket.

[0039] Figure 14 yes Figure 13 The left view.

[0040] Figure 15 This is an installation diagram of this utility model.

[0041] Figure 16 This is a schematic diagram of the limiting state of this utility model.

[0042] Figure 17 yes Figure 16 Enlarged view of section H.

[0043] Figure 18 This is a schematic diagram of the utility model in its stored state.

[0044] Figure 19 yes Figure 18 Enlarged view of part K.

[0045] In the picture,

[0046] A—Left-side control device, A1—Pedal, A2—Drive shaft, A3—Pressure shaft, B—Vehicle body, C—Throttle, D—Brake, E—Driver's seat, F—Position adjustment slide, 1—Throttle baffle, 2—Limit shaft, 21—Limit pin, 3—Limit bushing, 31—Limit groove, 311—Inner straight groove, 312—Circular arc groove, 313—Outer straight groove, 32—Rubber layer, 4—Base plate bracket, 41—Fixing hole, 42—Long slot hole, 5—X-direction connecting bracket, 51—Long slot hole, 52—Long slot hole, 6—Z-direction connecting plate, 7—Y-direction connecting plate, 71—Long slot hole, 72—Threaded hole, 8—Seat connecting bracket, 81—Long slot hole, 82—Through hole, 9—Screw. Detailed Implementation

[0047] This utility model is used for throttle protection in vehicles for the disabled equipped with a left-hand operating mechanism, to reliably shield the throttle and prevent accidental throttle misoperation; the vehicle for the disabled is equipped with an throttle and a brake, and a position adjustment groove is provided under the driver's seat.

[0048] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited to the embodiments described below. All equivalent changes and modifications made based on the content of this specification fall within the technical scope of this patent application.

[0049] Example

[0050] Please see Figure 4 The throttle protection device is installed under the driver's seat and includes a base component, an adjustable connecting component, and a rotatable shielding component.

[0051] The base component is located on the floor below the accelerator pedal and connected to the adjustable connecting component, and it can limit and guide the rotatable shielding component. The front of the adjustable connecting component is connected to the base component by screws, and the rear is fixedly connected to the lower part of the driver's seat position adjustment slide, which can adjust and change the connection direction and position of the base component in the three-dimensional XYZ directions. The rotatable shielding component is used to shield the accelerator pedal to prevent contact, and is rotatably connected to the base component and can move along the X direction of the base component to realize the conversion between the limited position and the retracted position. When the rotatable shielding component is in the limited position on the base component, it can shield the accelerator pedal, realizing reliable protection of the accelerator pedal in the operation mode of the disabled. When the rotatable shielding component moves along the X direction and rotates to the retracted position, it can release the shielding of the accelerator pedal, so that the modified vehicle for the disabled can be converted from the operation mode of the disabled to the operation mode of the able-bodied.

[0052] Please see Figure 5 The base component includes a base plate bracket 4 and a limiting bushing 3. The base plate bracket 4 is a steel plate bent at right angles. A fixing hole 41 and a long slotted hole 42 are provided on the horizontal plate for connection. The long slotted hole 42 serves to adjust the installation position of the base component along the X direction. The limiting bushing 3 is made of steel pipe and is horizontally welded to the upright plate of the base plate bracket 4 with its axis along the X direction. A limiting groove 31 penetrating the pipe wall of the limiting bushing 3 is provided near its end to limit and guide the rotatable shielding component. Please refer to [reference needed]. Figure 6 and Figure 7 The limiting groove 31 has a "Z" shaped orientation and is formed by three through grooves penetrating the wall of the limiting sleeve 3. It includes an inner straight groove 311, a circular arc groove 312, and an outer straight groove 313. The inner straight groove 311 is arranged along the axial direction of the limiting sleeve 3, with its inner end being a blind end. The outer straight groove 313 is also arranged along the axial direction of the limiting sleeve 3, parallel to the inner straight groove 311 but not on the same straight line. The outer end of the outer straight groove 313 opens at the end of the limiting sleeve 3. The circular arc groove 312 is arranged along the limiting shaft... The cross-sectional arrangement of sleeve 3 is such that one end is connected to the outer end of the inner straight groove 311, and the other end is connected to the inner end of the outer straight groove 313, thus forming a "Z"-shaped through groove from the inner end (blind end) of the inner straight groove 311 to the outer end (open end) of the outer straight groove 313; the inner side of the arc groove 312 is attached with a rubber layer 32 to increase friction and prevent the rotatable shielding component from accidentally coming off. The thickness of the rubber layer 32 plus the diameter of the limiting pin 21 can be slightly larger than the width of the limiting groove 31.

[0053] Please see Figure 5The rotatable blocking component includes a throttle baffle 1 and a limiting shaft 2. The limiting shaft 2 is made of round steel and passes through a limiting sleeve 3 of the base component. The limiting shaft 2 can slide axially (X-direction) within the limiting sleeve 3, with both ends extending out of the sleeve 3. The throttle baffle 1 is welded to the inner end of the limiting shaft 2, and its plane is along the axial direction of the limiting shaft 2. It is used to block the throttle and prevent contact. Please refer to [reference needed]. Figure 6 and Figure 7 A limiting pin 21 is radially protruding and welded to the outer end of the limiting shaft 2 for limiting and guiding the limiting shaft 2 and the throttle baffle 1. The limiting pin 21 is embedded in the limiting groove 31 of the limiting bushing 3 and slides in the limiting groove 31 to guide the axial (X-direction) movement of the limiting shaft 2 and the rotation around the axis of the limiting bushing 3.

[0054] One end of the adjustable connecting component is fixedly connected to the position adjustment slide F of the driver's seat E, and the other end is connected to the base component. The adjustable connecting component includes a seat connecting bracket 8, a Y-axis connecting plate 7, a Z-axis connecting plate 6, and an X-axis connecting bracket 5 connected sequentially from back to front.

[0055] The adjustable connecting component fixes the entire device to the original opening of the position adjustment slide F, thus eliminating the need for additional drilling or welding on the inner wall of the carriage, achieving non-destructive installation, thereby avoiding damage to the carriage and maintaining the excellent performance of the original vehicle.

[0056] Please refer to the following: Figure 8 and Figure 9 The seat connecting bracket 8 is a right-angle bent plate, which is fixed to the lower part of the position adjustment slide F by screws. One side of the seat connecting bracket 8 is provided with an elongated hole 81 that connects to the position adjustment slide F of the driver's seat E, and the other side of the plate is provided with two through holes 82 that connect to the Y-direction connecting plate 7.

[0057] Please refer to the following: Figure 10 and Figure 11 The Y-axis connecting plate 7 is a right-angle bent plate with three sets of threaded holes on one side. Each set of threaded holes includes two threaded holes 72. The two threaded holes 72 in any set can be connected to the seat connecting bracket 8 through the two through holes 82. The three sets of threaded holes are parallel to each other, and the distance between the two threaded holes 72 in each set is the same as the distance between the two through holes 82 on the seat connecting bracket 8. The other side of the Y-axis connecting plate 7 is provided with an elongated hole 71 for connecting to the Z-axis connecting plate 6.

[0058] Please see Figure 12The Z-direction connecting plate 6 is an elongated plate with two threaded holes 61 at one end that connect to the Y-direction connecting plate 7. These two threaded holes 61 are arranged vertically. The other end of the Z-direction connecting plate 6 has four threaded holes 62 that connect to the X-direction connecting bracket 5. These four threaded holes 62 are arranged in two rows, with two threaded holes 62 in each row arranged horizontally.

[0059] Please refer to the following: Figure 13 and Figure 14 The X-direction connecting bracket 5 is a right-angle bent plate used to change the direction of connection. One side of the plate is provided with an elongated hole 52 that connects to the Z-direction connecting plate 6, and the other side of the plate is provided with an elongated hole 51 that connects to the base plate bracket 4 of the base component.

[0060] Because the adjustable connecting component has elongated holes on multiple rods for adjusting the connection length between components, and some rods also have a steering function, the adjustable connecting component has the function of adjusting and changing the connection length, direction and position, thereby greatly improving the installation flexibility of the throttle protection device and enabling it to be more widely adapted to the installation of various vehicle models.

[0061] The installation method of this utility model is as follows:

[0062] Please see Figure 15 The base component and the adjustable connecting component are installed together (see...). Figure 5 ), and place it in front of the throttle C; then connect the seat connecting bracket 8, Y-direction connecting plate 7, Z-direction connecting plate 6 and X-direction connecting bracket 5 in sequence as adjustable connecting components, and connect the X-direction connecting bracket 5 to the base plate bracket 4 of the base component with screws (see Figure 4 The seat connecting bracket 8 is connected to the lower part of the position adjustment slide F of the driver's seat E by screws 9 (see...). Figure 15 Then, using the elongated hole, adjust the position of the connecting screws between the components, and adjust the direction and position of the base component and the rotatable shielding component in the three-dimensional XYZ direction to the most suitable position, so that when the limiting pin 21 slides to the innermost limiting position of the limiting groove 31 (see...). Figure 6 When the throttle baffle 1 exactly blocks the throttle C, and the limiting shaft 2 moves to the left and the limiting pin 21 exits the limiting groove 31 (see...), Figure 7 The limiting shaft 2 drives the throttle baffle 1 to rotate to the storage position on the floor between the throttle C and the brake D; finally, tighten all connecting screws to complete the installation of the above-mentioned throttle protection device.

[0063] The throttle protection device can be operated by both disabled and able-bodied individuals, as follows:

[0064] Please refer to the following: Figure 6 , Figure 16 and Figure 17 When the limiting shaft 2 slides axially (X-direction) to the right within the limiting sleeve 3, and the limiting pin 21 slides to its innermost end (blind end) under the guidance of the limiting groove 31, the limiting shaft 2 and the limiting sleeve 3 are in the limiting position. The throttle baffle 1 is located exactly in front of the throttle C, blocking the throttle C. At this time, the throttle protection device is in a protective state. Please refer to the following: Figure 7 , Figure 18 and Figure 19 When the limiting shaft 2 slides axially (X-direction) to the left within the limiting sleeve 3, the limiting pin 21 slides to the outer end (open end) of the limiting groove 31 under the guidance of the limiting groove 31, and then disengages from the limiting groove 31. This allows the throttle baffle 1 to rotate backward around the axis of the limiting sleeve 3 along with the limiting shaft 2 until the throttle baffle 1 rests on the floor between the throttle C and the brake D. At this point, the throttle baffle 1 no longer obstructs the throttle C, the throttle protection device is in a retracted state, and the driver can directly press the throttle C with their foot, thus converting the disabled person's vehicle into a normal person's operating state. If the left-hand control device A installed on the disabled person's vehicle can function as described... Figure 2 If you collect it, the modified vehicle for disabled people will then be in no different from a normal vehicle.

[0065] When the throttle protection device is in the protective state, due to vibrations caused by vehicle movement, the limiting shaft 2 may disengage from its limiting position and move to the left. If the limiting pin 21 continues to slide to the left along the limiting groove 31 due to vibration, it may disengage from the limiting groove 31. At this time, the throttle baffle 1 will leave its limiting position and will be unable to block the throttle C, causing the throttle protection device to malfunction. To avoid the above situation, the present invention adds a rubber layer 32 to the inner side of the arc groove 312 of the limiting groove 31. The thickness of the rubber layer 32 plus the diameter of the limiting pin 21 can be slightly larger than the width of the limiting groove 31. Figure 6 and Figure 17 When the limiting pin 21 accidentally slides into the arc groove 312, the friction of the rubber layer 32 can prevent the limiting pin 21 from continuing to slide outward along the limiting groove 31, thereby making the blocking effect of the throttle baffle 1 on the throttle C more reliable.

[0066] The scope of protection claimed by this utility model is not limited to the above embodiments, but should also include other variations and alternatives that are obvious to this utility model.

Claims

1. A throttle protection device for a modified vehicle for disabled persons with a left-hand operating mechanism, installed below the driver's seat, the driver's seat having a position adjustment slide, the modified vehicle for disabled persons having an accelerator and a brake, characterized in that: The accelerator protection device comprises a base part, an adjustable connecting part and a rotatable shielding part. The base part is arranged on the floor under the accelerator and connected with the adjustable connecting part, and can limit and guide the rotatable shielding part; the front part of the adjustable connecting part is connected with the base part, and the rear part is fixedly connected under the position adjusting sliding groove of the driver seat, and has the function of adjusting the connecting direction and position in the three-dimensional space; the rotatable shielding part is used for shielding the accelerator, and is rotatably connected with the base part and can move along the X direction of the base part to realize the conversion between the limiting position and the storage position. When the rotatable shielding part is in the limiting position on the base part, the accelerator is shielded, and the reliable protection of the accelerator in the operation state of the disabled person is realized; when the rotatable shielding part moves along the X direction and rotates to the storage position, the shielding of the accelerator is released, and the conversion of the modified car of the disabled person from the operation state of the disabled person to the operation state of the normal person is realized.

2. The throttle guard for a handicapped retrofit vehicle with left delay operating mechanism according to claim 1, characterized in that: The base part comprises a bottom plate support and a limiting shaft sleeve; the limiting shaft sleeve is horizontally welded on the bottom plate support and the axis is along the X direction; a limiting groove for limiting and guiding is arranged on the position close to the end of the limiting shaft sleeve; the limiting groove penetrates the pipe wall of the limiting shaft sleeve and is arranged along the X direction, and the outer end is open at the end of the limiting shaft sleeve, and the inner end is blind. The rotatable shielding part comprises an accelerator shielding plate and a limiting shaft; the limiting shaft is arranged in the limiting shaft sleeve of the base part and can slide in the limiting shaft sleeve along the X direction; the accelerator shielding plate is used for shielding the accelerator, and is welded on the inner end of the limiting shaft and the plane is along the axis of the limiting shaft; the outer end of the limiting shaft is fixed with a limiting pin which is embedded in the limiting groove and slides under the guidance of the limiting groove. When the limiting shaft slides to the right in the limiting shaft sleeve along the X direction, the limiting pin slides to the blind end of the innermost end under the guidance of the limiting groove, the limiting shaft and the limiting shaft sleeve are in the limiting position, the accelerator shielding plate is in the position shielding the accelerator, and thus the accelerator protection device is in the protection state; when the limiting shaft slides to the left in the limiting shaft sleeve along the X direction, the limiting pin slides out of the opening end of the limiting groove and further separates from the limiting groove, the accelerator shielding plate rotates backward around the axis of the limiting shaft sleeve with the limiting shaft to the storage position, and no longer shields the accelerator, and thus the accelerator protection device is in the storage state, and the modified car of the disabled person is converted to the operation state of the normal person.

3. The accelerator guard for a handicapped retrofit car with left delay operating mechanism according to claim 2, characterized in that: The limiting groove is a straight groove along the axis of the limiting shaft sleeve.

4. The accelerator guard for a handicapped retrofit car with left delay operating mechanism according to claim 2, characterized in that: The limiting groove is a "Z"-shaped through groove, comprising an inner straight groove, a circular-arc groove and an outer straight groove.

5. The throttle guard for a handicapped retrofit vehicle with left- delay operating mechanism according to claim 4, characterized in that: The inner side of the circular-arc groove is attached with a rubber layer for increasing friction.

6. The accelerator guard for a handicapped retrofit car with left delay operating mechanism according to claim 5, characterized in that: The thickness of the rubber layer plus the diameter of the limiting pin is slightly greater than the width of the limiting groove.

7. The accelerator guard for a handicapped modified vehicle with left delay operating mechanism according to claim 2, characterized in that: The adjustable connecting component comprises a seat connecting support, a Y-direction connecting plate, a Z-direction connecting plate and an X-direction connecting support connected in sequence from back to front; the seat connecting support is fixed below the position adjusting sliding groove F through screws; the X-direction connecting support is connected with the bottom plate support; the seat connecting support, the Y-direction connecting plate and the X-direction connecting support are right-angle bent plate pieces and are provided with long waist holes for changing the direction and length of connection; the Y-direction connecting plate and the Z-direction connecting plate are provided with a plurality of threaded holes for changing the height of connection.

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