A car driving assistance device for people with lower limb disabilities

Abstract

The present invention belongs to the technical field of automobile driving assistance devices, and specifically relates to an automobile driving assistance device for people with lower limb disabilities, comprising a base, a driving handle, a brake driving plate and a throttle driving plate; the lower end of the driving handle is hinged to the base; the brake driving plate and the throttle driving plate are both slidably connected to the base; a first rack is fixed to the brake driving plate, a second rack is fixed to the throttle driving plate, a first gear is fixed to one side of the lower end of the driving handle, the first gear is transmission-connected to the first rack through a double gear, the double gear is rotatably connected to the base, and a second gear meshing with the second rack is fixed to the other side of the lower end of the driving handle; the brake driving plate and the throttle driving plate are driven to move forward and backward by the driving handle in a gear rack manner, so the device is not fixedly connected to the automobile pedal; during installation, it is only necessary to connect the base to the vehicle, and the overall installation is convenient.

Description

Technical Field

[0001] The present invention belongs to the technical field of automobile driving assistance devices, and in particular relates to an automobile driving assistance device for people with lower limb disabilities. Background Art

[0002] The purpose of using car driving assistance devices for people with lower limb disabilities is to help them drive cars safely and conveniently. Car driving assistance devices for people with lower limb disabilities are car control systems designed specifically for people with lower limb disabilities to help them drive safely and legally. These devices are suitable for all types of automatic transmission vehicles. By integrating the operation of refueling, braking, turn indicators and horns on the hand control handle, the driver can complete basic operations with just one hand.

[0003] For example, the invention patent with patent application number 201611047787.2 discloses a control device for manual driving of a car. The brake push rod and the throttle push rod in the invention are connected to the mounting body through the first height adjustment block and the second height adjustment block respectively, so that the height of the brake push rod and the throttle push rod can be adjusted. The height of the brake push rod or the throttle push rod is different, and its sensitivity to the control of the brake pedal or the throttle pedal is also different. Therefore, the driver can select the control sensitivity of the throttle or brake that suits him according to his driving habits.

[0004] For example, the invention patent with patent application number 202011258410.8 discloses a new manual driving car auxiliary control device for the disabled, which has the advantages of achieving constant throttle speed, constant maintenance of braking force, and convenient and fast unlocking.

[0005] The main structures of the above two devices are basically the same, both of which are connected to the existing accelerator or brake pedal by means of a splint, and then controlled by pushing the hand by means of a connecting rod. However, the above installation structure is complicated and requires adjustment of various angles to ensure smooth movement. In addition, due to the splint + connecting rod connection method, it will cause certain obstacles to normal people when driving. Summary of the invention

[0006] In response to the above technical problems, the present invention provides a car driving assistance device for people with lower limb disabilities. The device uses a pushing method to push the car pedal to move, and is not fixedly connected to the pedal. In addition, it does not use structures such as connecting rods, and will not affect normal driving after installation.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A car driving assistance device for people with lower limb disabilities, comprising a base, a driving handle, a brake driving plate and a throttle driving plate; the lower end of the driving handle is hinged to the base; the brake driving plate and the throttle driving plate are both slidably connected to the base; a first rack is fixed to the brake driving plate, a second rack is fixed to the throttle driving plate, a first gear is fixed to one side of the lower end of the driving handle, the first gear is transmission-connected to the first rack through a double gear, a connecting ear is fixed to the base, the double gear is rotationally connected to the connecting ear, and a second gear meshing with the second rack is fixed to the other side of the lower end of the driving handle;

[0009] A return spring is provided between the brake drive plate and the throttle drive plate and the base; a folding push rod is provided at the front end of the brake drive plate and the throttle drive plate;

[0010] The base is fixedly connected with a bottom cover by bolts, and the bottom cover is arranged on the base; the bottom cover is provided with a through hole, and the driving handle can extend through the through hole; the bottom cover is provided with a placement groove for accommodating the folding push rod; the upper surface of the bottom cover is used as a foot pad.

[0011] The upper surface of the bottom cover is provided with an anti-slip layer.

[0012] The brake drive plate and the throttle drive plate have the same structure, both including a rack connecting plate and an adjustment plate; the adjustment plate is slidably connected to the rack connecting plate, and an adjustment bolt is provided at the sliding connection, and the adjustment plate and the rack connecting plate are fixed by the adjustment bolt; the folding push rod is connected to the front end of the adjustment plate.

[0013] The folding push rod comprises a push rod and a limit assembly, the lower end of the push rod is hinged to the front end of the adjustment plate, and the limit assembly is arranged at the hinge between the push rod and the adjustment plate.

[0014] The push rod is rotatably connected with a contact roller.

[0015] The limiting assembly includes a limiting pin and a fixed top screw; a plurality of first limiting grooves are distributed on the push rod, and a second limiting groove is provided on the adjustment plate; the second limiting groove is combined with any first limiting groove to form a slot that is plugged into the limiting pin; the fixed top screw is threadedly connected to the adjustment plate, and the lower end of the fixed top screw can be inserted into the slot.

[0016] The rack connecting plate is connected with a limit screw, and the base is fixed with a corresponding limit top plate.

[0017] A brake control plate is fixed on the base; the brake control plate is located on the front side of the driving handle; the brake control plate is provided with ratchet teeth distributed in an arc shape; a pawl cooperating with the ratchet teeth is provided on the front side of the lower end of the driving handle; the pawl is hinged to the driving handle, a tension spring is provided between the pawl and the driving handle, and a protrusion contacting with the pawl is provided on the driving handle; a control component is provided on the driving handle, and the ratchet is driven to rotate by the control component.

[0018] The control component includes a pressing handle and a driving rod. The pressing handle is slidably connected to the upper end of the driving handle, and a second return spring is provided between the pressing handle and the driving handle; the driving rod is slidably connected to the driving handle, and a third return spring is provided between the driving rod and the driving handle, and both ends of the driving rod are in contact with the ratchet and the pressing handle respectively.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The gear rack method is adopted to drive the brake driving plate and the throttle driving plate to move forward and backward through the driving handle, and the folding push rod contacts the pedal of the car, thereby driving the pedal of the car to move. This method uses a similar control method to simulate the stepping of "human feet", so there is no fixed connection between the device and the car pedal; when installing, you only need to connect the base to the vehicle, and the overall installation is convenient. The structural setting of the double gear can not only realize the opposite movement of the brake control plate and the throttle driving plate; but also transmit power through the double gear, and can drive the brake control pedal to move long distances by slightly rotating the driving handle, ensuring timely braking.

[0021] At the same time, with the above-mentioned structural setting, when a normal person uses it, he only needs to fold the folding push rod; moreover, the upper surface of the bottom cover can also be used as a foot pad, which not only protects the vehicle floor but also does not hinder normal driving.

[0022] The structure of the brake control panel can ensure that the driving handle is fixed when the brake is controlled. In addition, the structure only plays a fixing role when the brake is controlled, and does not fix the driving handle when the throttle is controlled, so as to avoid the situation where the throttle is out of control due to misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the split structure of the present invention;

[0024] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0025] Figure 3 yes Figure 1 A partial enlarged view of point B in the middle;

[0026] Figure 4 It is a structural schematic diagram of the brake control panel of the present invention;

[0027] Figure 5 yes Figure 4 The structural diagram at C in the middle;

[0028] Figure 6 is a cross-sectional view of the present invention;

[0029] Figure 7 yes Figure 6 A partial enlarged view of point D in the middle;

[0030] Figure 8 yes Figure 6 A partial enlarged view of point E in the middle;

[0031] Wherein: 1 is a base, 2 is a driving handle, 3 is a brake driving plate, 4 is a throttle driving plate, 5 is a first rack, 6 is a second rack, 7 is a first gear, 8 is a second gear, 9 is a double gear, 10 is a return spring, 11 is a folding push rod, 12 is a bottom cover, 13 is a through hole, 14 is a placement groove, 15 is an anti-skid layer, 16 is a rack connecting plate, 17 is an adjustment plate, 18 is an adjustment bolt, 19 is a push rod, 20 is a contact roller, 21 is a limit pin, 22 is a fixed top screw, 23 is a first limit groove, 24 is a second limit groove, 25 is a limit top screw, 26 is a limit top plate, 27 is a brake control plate, 28 is a ratchet, 29 is a pawl, 30 is a tension spring, 31 is a protrusion, 32 is a pressing handle, 33 is a driving rod, 34 is a second return spring, 35 is a third return spring, and 36 is a connecting ear. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0033] like Figure 1-8 As shown, a car driving assistance device for a person with lower limb disabilities includes a base 1, a driving handle 2, a brake driving plate 3 and a throttle driving plate 4; the lower end of the driving handle 2 is hinged to the base 1; the brake driving plate 3 and the throttle driving plate 4 are both slidably connected to the base 1. The base 1 is used for fixed connection with a seat and other components of the vehicle, and corresponding bolt holes are provided on the base 1.

[0034] A first rack 5 is fixed on the brake drive plate 3, a second rack 6 is fixed on the throttle drive plate 4, a first gear 7 is fixed on one side of the lower end of the drive handle 2, the first gear 7 is transmission-connected to the first rack 5 through a double gear 9, a connecting ear 36 is fixed on the base 1, the double gear 9 is rotationally connected to the connecting ear 36, and a second gear 8 meshing with the second rack 6 is fixed on the other side of the lower end of the drive handle 2. Specifically: the small gear in the double gear 9 meshes with the first gear 7, and the large gear in the double gear 9 meshes with the first rack 5.

[0035] When the driving handle 2 is pulled backward and rotated, the throttle driving plate 4 is driven to move forward by the meshing of the second gear 8 and the second rack 6. At the same time, the first gear 7 is connected to the first rack 5 through the double gear 9, thereby driving the brake driving plate 3 to move backward. Conversely, when the driving handle 2 is pushed forward and rotated, the first gear 7 is connected to the first rack 5 through the double gear 9, thereby driving the brake driving plate 3 to move forward. At the same time, the throttle driving plate 4 is driven to move backward by the meshing of the second gear 8 and the second rack 6.

[0036] That is, by pushing forward and pulling backward the driving handle 2, the accelerator driving plate 4 and the brake driving plate 3 can be moved in opposite directions, thereby controlling the accelerator pedal and the brake pedal of the vehicle.

[0037] Specifically, a return spring 10 is provided between the brake drive plate 3 and the throttle drive plate 4 and the base 1. When the external force applied to the drive handle 2 is cancelled, the return spring 10 can drive the brake drive plate 3, the throttle drive plate 4 and the drive handle 2 to reset.

[0038] A folding push rod 11 is provided at the front end of the brake driving plate 3 and the accelerator driving plate 4; that is, the folding push rod 11 contacts the brake pedal and the accelerator pedal, thereby driving the brake pedal and the accelerator pedal to move. In addition, the structure of the folding push rod 11 can be folded during normal driving without affecting driving.

[0039] A bottom cover 12 is fixedly connected to the base 1 by bolts. The bottom cover 12 is arranged on the base 1 to cover the components on the base 1. At the same time, a through hole 13 is provided on the bottom cover 12, and the driving handle 2 can extend through the through hole 13; and a placement groove 14 for accommodating the folding push rod 11 is provided on the bottom cover 12. The folding push rod 11 can be placed in the placement groove 14 after being folded. The upper surface of the bottom cover 12 is used as a foot pad, which not only protects the bottom plate of the vehicle, but also does not hinder normal driving.

[0040] Furthermore, an anti-skid layer 15 is provided on the upper surface of the bottom cover 12 to prevent the feet from slipping during driving.

[0041] Furthermore, the brake drive plate 3 and the throttle drive plate 4 have the same structure, both of which include a rack connecting plate 16 and an adjusting plate 17; the adjusting plate 17 is slidably connected to the rack connecting plate 16, and an adjusting bolt 18 is provided at the sliding connection, and the adjusting plate 17 and the rack connecting plate 16 are fixed by the adjusting bolt 18; the folding push rod 11 is connected to the front end of the adjusting plate 17. The rack connecting plate 16 is slidably connected to the base 1.

[0042] Through the above structure, the left and right positions of the adjusting plate 17 can be adjusted as needed to adapt to different vehicles. When adjusting, first loosen the adjusting bolt 18, then push the adjusting plate 17 left and right to change its position; after changing the position, tighten the adjusting bolt 18.

[0043] Furthermore, the folding push rod 11 includes a push rod 19 and a limit assembly. The lower end of the push rod 19 is hinged to the front end of the adjustment plate 17, and the limit assembly is arranged at the hinge between the push rod 19 and the adjustment plate 17. The push rod 19 contacts the automobile pedal (brake pedal, accelerator pedal), thereby pushing the automobile pedal to move. When a person with lower limb disabilities uses it, the push rod 19 is rotated and unfolded in the direction of the automobile pedal, and the tilt angle of the push rod 19 is changed according to the angle of the automobile pedal, and finally its position is fixed by the limit assembly. When a normal person uses it, the push rod 19 is rotated and folded in the direction away from the automobile pedal, and finally its position is fixed by the limit assembly.

[0044] Furthermore, in order to reduce the friction between the push rod 19 and the automobile pedal, a contact roller 20 is rotatably connected to the push rod 19; that is, the push rod 19 contacts the automobile pedal through the contact roller 20, and rolling friction occurs between the two.

[0045] Furthermore, the limiting assembly includes a limiting pin 21 and a fixed top screw 22; a plurality of first limiting grooves 23 are distributed on the push rod 19, and a second limiting groove 24 is provided on the adjustment plate 17; the fixed top screw 22 is threadedly connected to the adjustment plate 17, and a corresponding threaded through hole is provided on the adjustment plate 17, and the lower end of the fixed top screw 22 can be extended into the slot.

[0046] The push-pull rod is unfolded or folded as needed, so that the corresponding first limiting groove 23 and the second limiting groove 24 on the push-pull rod are combined to form a slot, and the limiting pin 21 is inserted into the slot. Finally, the fixing top screw 22 is tightened, and the lower end of the fixing top screw 22 extends into the slot and abuts against the limiting pin 21, thereby preventing the limiting pin 21 from being pulled out. When the position of the push-pull rod needs to be changed, the fixing top screw 22 is first loosened, and then the limiting pin 21 is pulled out.

[0047] Further, a limit screw 25 is connected to any rack connecting plate 16, and a corresponding limit screw 26 is fixed to the base 1. The limit screw 25 can limit the range of motion of the rack connecting plate 16 and the corresponding adjustment plate 17.

[0048] For example, the limit screw 25 is arranged on the rack connecting plate 16 of the throttle driving plate 4, and the rack connecting plate 16 is provided with a corresponding threaded through hole. By rotating the limit screw 25 to change its extended length, the range of the rack connecting plate 16 is changed, that is, the limit of the farthest moving position of the adjustment plate 17 can be changed. Through this structural setting, the "stepping" depth of the throttle pedal can be effectively limited.

[0049] Furthermore, a brake control plate 27 is fixed on the base 1; the brake control plate 27 is located at the front side of the driving handle 2; the brake control plate 27 is provided with ratchet teeth 28 distributed in an arc shape; a ratchet 29 cooperating with the ratchet teeth 28 is provided at the front side of the lower end of the driving handle 2; the ratchet 29 is hinged to the driving handle 2, a tension spring 30 is provided between the ratchet 29 and the driving handle 2, and a protrusion 31 in contact with the ratchet 29 is provided on the driving handle 2, and the rotation of the ratchet 29 can be limited by the protrusion 31. A control component is provided on the driving handle 2, and the ratchet 29 is driven to rotate by the control component.

[0050] When the driving handle 2 is pushed forward and rotated, the ratchet 29 does not hinder its movement; the first gear 7 is connected to the first rack 5 through the double gear 9, thereby driving the brake driving plate 3 to move forward and perform braking control. When the external force is removed, the elastic potential energy of the reset spring 10 is released to make the driving handle 2 rotate backward and reset, and the ratchet 29 cooperates with the ratchet 28 to limit the rotation of the driving handle 2. That is, through this structural setting, the braking action can be maintained.

[0051] When the throttle needs to be controlled, the pawl 29 needs to be driven to rotate by the control assembly first, so that the pawl 29 does not cooperate with the ratchet 28; at this time, the movement of the driving handle 2 is not restricted.

[0052] Furthermore, the control component includes a pressing handle 32 and a driving rod 33. The pressing handle 32 is slidably connected to the upper end of the driving handle 2, and a second return spring 34 is provided between the pressing handle 32 and the driving handle 2; the driving rod 33 is slidably connected to the driving handle 2, and a third return spring 35 is provided between the driving rod 33 and the driving handle 2, and the two ends of the driving rod 33 are respectively in contact with the pawl 29 and the pressing handle 32.

[0053] When the brake hold state needs to be released, just press down the pressing handle 32 and push the driving handle 2 forward at the same time, so that the pressing handle 32 can drive the ratchet 29 to rotate through the driving rod 33 without cooperating with the ratchet 28; finally, continue to press and pull the driving handle 2 backward until the driving handle 2 returns to the initial rotation angle. With this structural setting, the brake hold state can be released only by pressing down and pushing forward, and then pulling backward, which can avoid misoperation.

[0054] Only the preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the above embodiments.

Claims

1. A car driving assistance device for a person with lower limb disabilities, characterized in that: The invention comprises a base (1), a driving handle (2), a brake driving plate (3) and a throttle driving plate (4); the lower end of the driving handle (2) is hinged to the base (1); the brake driving plate (3) and the throttle driving plate (4) are both slidably connected to the base (1); a first rack (5) is fixed to the brake driving plate (3), a second rack (6) is fixed to the throttle driving plate (4), a first gear (7) is fixed to one side of the lower end of the driving handle (2), the first gear (7) is transmission-connected to the first rack (5) via a double gear (9), a connecting ear (36) is fixed to the base (1), the double gear (9) is rotationally connected to the connecting ear (36), and a second gear (8) meshing with the second rack (6) is fixed to the other side of the lower end of the driving handle (2); A return spring (10) is provided between the brake drive plate (3) and the throttle drive plate (4) and the base (1); a folding push rod (11) is provided at the front end of the brake drive plate (3) and the throttle drive plate (4); The base (1) is fixedly connected to a bottom cover (12) by bolts, and the bottom cover (12) is arranged on the base (1); a through hole (13) is provided on the bottom cover (12), and the driving handle (2) can extend through the through hole (13); a placement groove (14) for accommodating the folding push rod (11) is provided on the bottom cover (12); the upper surface of the bottom cover (12) is used as a foot pad; the upper surface of the bottom cover (12) is provided with an anti-slip layer (15); The brake drive plate (3) and the throttle drive plate (4) have the same structure, and both include a rack connecting plate (16) and an adjustment plate (17); the adjustment plate (17) is slidably connected to the rack connecting plate (16), and an adjustment bolt (18) is provided at the sliding connection, and the adjustment plate (17) and the rack connecting plate (16) are fixed by the adjustment bolt (18); the folding push rod (11) is connected to the front end of the adjustment plate (17); The folding push rod (11) comprises a push rod (19) and a limit assembly, the lower end of the push rod (19) is hinged to the front end of the adjustment plate (17), and the limit assembly is arranged at the hinge between the push rod (19) and the adjustment plate (17).

2. The automobile driving assistance device for a person with lower limb disabilities according to claim 1, characterized in that: A contact roller (20) is rotatably connected to the push rod (19).

3. The automobile driving assistance device for a person with lower limb disabilities according to claim 1, characterized in that: The limiting assembly comprises a limiting pin (21) and a fixed top screw (22); a plurality of first limiting grooves (23) are distributed on the push rod (19), and a second limiting groove (24) is provided on the adjustment plate (17); the second limiting groove (24) is combined with any first limiting groove (23) to form a slot for plugging into the limiting pin (21); the fixed top screw (22) is threadedly connected to the adjustment plate (17), and the lower end of the fixed top screw (22) can extend into the slot.

4. The automobile driving assistance device for a person with lower limb disabilities according to claim 1, characterized in that: The rack connecting plate (16) is connected to a limit top screw (25), and a corresponding limit top plate (26) is fixed to the base (1).

5. The automobile driving assistance device for a person with lower limb disabilities according to claim 1, characterized in that: A brake control plate (27) is fixed on the base (1); the brake control plate (27) is located at the front side of the driving handle (2); the brake control plate (27) is provided with ratchet teeth (28) distributed in an arc shape; a ratchet pawl (29) cooperating with the ratchet teeth (28) is provided at the front side of the lower end of the driving handle (2); the ratchet pawl (29) is hinged to the driving handle (2), a tension spring (30) is provided between the ratchet pawl (29) and the driving handle (2), and a protrusion (31) in contact with the ratchet pawl (29) is provided on the driving handle (2); a control component is provided on the driving handle (2), and the ratchet pawl (29) is driven to rotate by the control component.

6. The automobile driving assistance device for a person with lower limb disabilities according to claim 5, characterized in that: The control assembly comprises a pressing handle (32) and a driving rod (33); the pressing handle (32) is slidably connected to the upper end of the driving handle (2); a second return spring (34) is provided between the pressing handle (32) and the driving handle (2); the driving rod (33) is slidably connected to the driving handle (2); a third return spring (35) is provided between the driving rod (33) and the driving handle (2); and two ends of the driving rod (33) are in contact with the ratchet (29) and the pressing handle (32) respectively.

Images