Parking brake

Abstract

The utility model relates to the technical field of braking, in particular to a parking brake which comprises a connecting frame, a brake handle and a limiting clamping jaw, the brake handle and the limiting clamping jaw are rotatably connected to the surface of the connecting frame at intervals, and the rotating axis of the brake handle and the rotating axis of the limiting clamping jaw are parallel to each other. A limiting groove allowing the end of the brake handle to be embedded is reserved in the end of the limiting clamping jaw, and when the brake handle is driven to rotate in the direction close to the limiting groove, the limiting clamping jaw is pressed, and the end of the brake handle is guided to be embedded into the limiting groove to form limiting. Through the arrangement of the connecting frame, the brake handle and the limiting clamping jaw, the palm presses the surface of the brake handle and drives the brake handle to rotate in the direction close to the limiting groove, meanwhile, fingers press the surface of the limiting clamping jaw and guide the end of the brake handle to be embedded into the limiting groove to form limiting, and the braking state is kept when a user loosens the brake handle; the user does not need to operate the parking brake simultaneously by two hands, so that the convenience of using the parking brake by the user is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of brake technology, in particular to a parking brake. BACKGROUND

[0002] The parking brake is also called hand brake or emergency brake, which is usually a hand brake installed on an electric vehicle. The electric vehicle or motorcycle in the prior art needs to press the brake handle all the time when braking, and the brake handle can be locked by a parking mechanism to keep the vehicle in a braking state.

[0003] However, the parking mechanism in the prior art needs to be operated by one hand holding the brake handle and the other hand starting the parking mechanism, which requires the user to operate with both hands at the same time, thereby causing inconvenience in using the parking brake. CONTENT OF THE UTILITY MODEL

[0004] In order to improve the problem of inconvenience in using the parking brake, the present application provides a parking brake.

[0005] The parking brake provided by the present application adopts the following technical solution:

[0006] The parking brake comprises a connecting frame, a brake handle and a limiting jaw, the brake handle and the limiting jaw are rotationally connected on the surface of the connecting frame at intervals, the rotation axis of the brake handle and the rotation axis of the limiting jaw are parallel to each other, and the end of the limiting jaw is provided with a limiting groove for embedding the end of the brake handle. When the brake handle is rotated towards the direction of approaching the limiting groove, the limiting jaw is pressed and the end of the brake handle is embedded into the limiting groove to form limiting.

[0007] By adopting the above technical solution, the brake handle and the limiting jaw are rotationally connected on the surface of the connecting frame at intervals, so that the user can easily control the rotation of the brake handle and the limiting jaw with one hand. When the user needs to brake, the palm presses the surface of the brake handle and drives the brake handle to rotate towards the direction of approaching the limiting groove, and the fingers press the surface of the limiting jaw and guide the end of the brake handle to be embedded into the limiting groove to form limiting. When the user releases the brake handle, the braking state is maintained, and the user does not need to operate with both hands at the same time, thereby improving the convenience of the user in using the parking brake.

[0008] Optionally, the rotation axis of the limiting jaw is connected with an elastic member, one end of the elastic member in the elastic force direction is connected to the surface of the limiting jaw, and the other end of the elastic member in the elastic force direction is connected to the surface of the connecting frame. The elastic member has a tendency to drive the end of the limiting jaw with the limiting groove to rotate away from the brake handle in the direction of the elastic force.

[0009] When the user needs to release the braking state, the palm forces presses the brake handle and drives the brake handle to rotate towards the limiting claw, the elastic member drives the limiting claw to rotate away from the brake handle, the limiting slot inner wall abuts against the brake handle end surface and guides the brake handle end portion to be separated from the limiting slot, and the automatic resetting of the limiting claw is realized.

[0010] Optionally, the limiting claw comprises a rotating portion, a limiting portion and a fixing bolt, the rotating portion is rotationally connected to the surface of the connecting frame, a threaded groove is formed in the surface of the rotating portion for embedding the end portion of the fixing bolt, a threaded hole is formed in the surface of the limiting portion for penetrating the end portion of the fixing bolt, the threaded hole penetrates through the outer wall of the limiting portion, the end portion of the fixing bolt penetrates the threaded hole and is screwed and fixed in the inner wall of the threaded groove, and the end surface of the fixing bolt and the surface of the rotating portion clamp the limiting portion at both ends to form limiting, and the limiting slot is located on the side of the limiting portion facing the brake handle.

[0011] By adopting the above technical scheme, the end portion of the fixing bolt penetrates the threaded hole and is screwed and fixed in the inner wall of the threaded groove, the end surface of the fixing bolt and the surface of the rotating portion clamp the limiting portion at both sides to form limiting, the installation of the limiting claw is realized, when the limiting slot inner wall and the brake handle end surface are worn by long-term sliding friction, the fixing bolt is unscrewed, the rotating portion and the limiting portion are separated, the user only needs to replace the limiting portion, without replacing the entire limiting claw, the material consumption is reduced, and the concept of environmental protection is embodied.

[0012] Optionally, the limiting portion is slidingly connected to the surface of the rotating portion, the sliding direction of the limiting portion is perpendicular to the axis of the rotating portion, the limiting portion is close to or away from the brake handle along the surface of the rotating portion, and the threaded hole is a waist-shaped groove.

[0013] By adopting the above technical scheme, the user drives the limiting portion to be close to or away from the brake handle along the surface of the rotating portion according to the distance between the rotating portion and the brake handle, controls the distance between the limiting slot and the brake handle end portion, and simultaneously drives the fixing bolt to slide in the inner wall of the waist-shaped groove, when the limiting portion is adjusted to the appropriate position, the end portion of the fixing bolt is screwed and fixed in the inner wall of the threaded groove to form limiting, and the position of the limiting portion on the rotating portion is adjustable.

[0014] Optionally, the surface of the rotating portion facing the limiting portion is connected with a sliding rail, and the surface of the limiting portion facing the rotating portion is provided with a sliding groove matched with the sliding rail, when the limiting portion slides on the surface of the rotating portion, the surface of the sliding rail is in sliding contact with the inner wall of the sliding groove.

[0015] By adopting the above technical scheme, when the limiting portion slides on the surface of the rotating portion, the surface of the sliding rail is in sliding contact with the inner wall of the sliding groove, the sliding rail provides guidance for the sliding of the limiting portion, the limiting portion is not easy to deviate during the sliding process, and the stability of the sliding of the limiting portion on the surface of the rotating portion is improved.

[0016] Optionally, the limiting part is provided with a guide surface at the end of the limiting groove, the guide surface is in the shape of a circular arc, and the guide surface can abut against the brake handle and guide the end of the brake handle to be embedded in the limiting groove.

[0017] By using the above technical solution, the guide surface is in the shape of a circular arc, when the finger presses the surface of the rotating part to drive the rotating part to rotate and drive the limiting groove to be close to the end of the brake handle, the guide surface abuts against the brake handle and guides the end of the brake handle to be embedded in the limiting groove, thereby reducing the abrasion between the brake handle and the limiting part, and prolonging the service life of the parking brake.

[0018] Optionally, the brake handle is provided with a buffer surface at the end of the limiting groove, the buffer surface is in the shape of a circular arc, and the buffer surface can abut against the guide surface and guide the end of the brake handle to be embedded in the limiting groove.

[0019] By using the above technical solution, when the palm presses the brake handle to rotate and the finger presses the surface of the rotating part to drive the rotating part to rotate, the buffer surface abuts against the guide surface and guides the end of the brake handle to be embedded in the limiting groove, and the inner wall of the limiting groove abuts against the end surface of the brake handle to form limiting, thereby further reducing the abrasion between the limiting part and the brake handle, and prolonging the service life of the parking brake.

[0020] Optionally, the end surface of the rotating part towards the brake handle is provided with an abutting arc surface for the finger to abut against, and the axis of the abutting arc surface is towards the brake handle.

[0021] By using the above technical solution, when the rotating part needs to be driven to rotate, the finger abuts against the abutting arc surface, the abutting arc surface provides limiting for the finger, so that the finger is not easy to move away from the abutting arc surface when driving the rotating part to rotate, thereby ensuring the stability of the rotating part.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The connection of the connecting frame, the brake handle and the limiting claw, the palm presses the surface of the brake handle and drives the brake handle to rotate towards the direction close to the limiting groove, at the same time, the finger presses the surface of the limiting claw and guides the end of the brake handle to be embedded in the limiting groove to form limiting, so that the user can keep the braking state when releasing the brake handle, without the need for the user to operate with both hands at the same time, thereby improving the convenience of the user in using the parking brake;

[0024] 2. The elastic element is provided, the elastic force of the elastic element drives the limiting claw to rotate away from the brake handle, the inner wall of the limiting groove abuts against the end surface of the brake handle and guides the end of the brake handle to be separated from the limiting groove, so as to realize the automatic reset of the limiting claw;

[0025] 3. The rotation part, the limiting part and the fixing bolt are arranged, the rotation part and the limiting part are separated, the user only needs to replace the limiting part, the whole limiting claw does not need to be replaced, material consumption is reduced, and the concept of environmental protection is embodied. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the application.

[0027] Figure 2 It is an exploded view of the limiting claw in the embodiment of the application.

[0028] Marked as follows: 1, connecting frame; 2, brake handle; 21, buffer surface; 3, limiting claw; 31, limiting groove; 32, rotation part; 33, limiting part; 34, fixing bolt; 35, threaded hole; 36, threaded groove; 37, sliding groove; 38, guide surface; 39, abutting curved surface; 4, sliding rail; 5, elastic member. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings Figures 1-2 The application is further described in detail.

[0030] The embodiment of the application discloses a parking brake. Referring to Figure 1 and Figure 2 The parking brake comprises a connecting frame 1, a brake handle 2 and a limiting claw 3, the brake handle 2 and the limiting claw 3 are sequentially and spacedly rotationally connected to the surface of the connecting frame 1, the rotation axis of the brake handle 2 and the rotation axis of the limiting claw 3 are parallel to each other, the end face of the limiting claw 3 towards the end part of the brake handle 2 is provided with a limiting groove 31 for embedding the end part of the brake handle 2, when a user presses the surface of the brake handle 2 with a palm to drive the brake handle 2 to rotate towards the direction of the limiting groove 31, the user presses the surface of the limiting claw 3 with a finger to drive the end part of the limiting claw 3 with the limiting groove 31 to rotate towards the direction of the end part of the brake handle 2, the end part of the brake handle 2 is embedded in the limiting groove 31, and the end face of the brake handle 2 abuts against the inner wall of the limiting groove 31 to form limiting, so that the user still maintains the braking state when the user releases the brake handle 2, without the need for the user to operate with both hands at the same time, thereby improving the convenience of the user in using the parking brake.

[0031] Referring to Figure 1 and Figure 2The limiting clamping jaw 3 comprises a rotating part 32, a limiting part 33 and a fixing bolt 34. The rotating part 32 is rotationally connected to the surface of the connecting frame 1. The limiting part 33 is slidingly connected to the surface of the rotating part 32. The sliding direction of the limiting part 33 is perpendicular to the rotating axis of the rotating part 32. The limiting part 33 is close to or away from the end of the brake handle 2 along the surface of the rotating part 32. The limiting groove 31 is located on the side of the limiting part 33 facing the brake handle 2. Threaded holes 35 are formed in the surface of the limiting part 33 for the end of the fixing bolt 34 to pass through. The threaded holes 35 are waist-shaped grooves. The axis of the threaded holes 35 is perpendicular to the sliding direction of the limiting part 33. The threaded holes 35 penetrate the outer wall of the limiting part 33 along the axis. Threaded grooves 36 are formed in the surface of the rotating part 32 facing the limiting part 33 for the end of the fixing bolt 34 to embed. The end of the fixing bolt 34 can pass through the threaded holes 35 and be screwed and fixed in the inner wall of the threaded grooves 36. The end surface of the fixing bolt 34 and the surface of the rotating part 32 clamp the two ends of the limiting part 33 to form a limit, realizing the installation of the limiting clamping jaw 3.

[0032] With reference to Figure 1 and Figure 2 , the surface of the rotating part 32 facing the limiting part 33 is fixed with a sliding rail 4. The surface of the limiting part 33 facing the rotating part 32 is provided with a sliding groove 37 matched with the sliding rail 4. According to the distance between the brake handle 2 and the rotating part 32, the limiting part 33 is driven to be close to or away from the end of the brake handle 2 along the surface of the rotating part 32, so that the limiting groove 31 is at a proper distance from the end of the brake handle 2. At the same time, the fixing bolt 34 slides in the waist-shaped groove, drives the end of the fixing bolt 34 to pass through the threaded holes 35 and be screwed and fixed in the inner wall of the threaded grooves 36, and the end surface of the fixing bolt 34 and the surface of the rotating part 32 clamp the two ends of the limiting part 33 to form a limit, realizing the adjustable control of the position of the limiting part 33 on the rotating part 32.

[0033] With reference to Figure 1 and Figure 2 , the end of the limiting part 33 facing the limiting groove 31 is provided with a guide surface 38 in the shape of a circular arc. The guide surface 38 can abut against the end surface of the brake handle 2 and guide the end of the brake handle 2 to be embedded in the limiting groove 31. The end of the brake handle 2 facing the limiting groove 31 is provided with a buffer surface 21 in the shape of a circular arc. The buffer surface 21 can abut against the guide surface 38 and guide the end of the brake handle 2 to be embedded in the limiting groove 31, reducing the wear between the brake handle 2 and the limiting clamping jaw 3, thereby prolonging the service life of the parking brake.

[0034] With reference to Figure 1 and Figure 2The end surface of the rotating part 32 facing the brake handle 2 is provided with an abutting arc surface 39 for abutting with fingers, the axis of the abutting arc surface 39 faces the brake handle 2, when the fingers press the rotating part 32 and drive the rotating part 32 to rotate, the abutting arc surface 39 limits the fingers, so that the fingers are not easy to be separated from the rotating part 32, thereby ensuring the stability of the fingers driving the rotating part 32 to rotate.

[0035] With reference to Figure 1 and Figure 2 The rotating shaft of the rotating part 32 is connected with an elastic member 5, the elastic member 5 can be a tension spring or a torsion spring, in the embodiment of the application, the elastic member 5 is a torsion spring, has a certain deformation capacity, one end of the elastic force direction of the elastic member 5 is connected to the surface of the rotating part 32, the other end of the elastic force direction of the elastic member 5 is connected to the surface of the connecting frame 1, the elastic member 5 has an elastic force to drive the rotating part 32 to rotate, and limit the tendency of the limiting part 33 away from the end of the brake handle 2; when the parking state needs to be contacted, the user presses the surface of the brake handle 2 with force with the palm to drive the brake handle 2 to rotate towards the direction of approaching the limiting groove 31, the elastic member 5 drives the rotating part 32 to rotate by the elastic force, drives the limiting part 33 to move away from the brake handle 2, the buffer surface 21 abuts against the inner wall of the limiting groove 31 and guides the end of the brake handle 2 to be separated from the limiting groove 31, the brake state is released, and the automatic reset of the limiting claw 3 is realized.

[0036] The implementation principle of the parking brake in the embodiment of the application is as follows: the user presses the surface of the brake handle 2 with the palm to drive the brake handle 2 to rotate towards the direction of approaching the limiting groove 31, the user presses the abutting arc surface 39 with the fingers to drive the rotating part 32 to rotate, drives the limiting part 33 to approach the brake handle 2, the buffer surface 21 abuts against the guide surface 38 and guides the end of the brake handle 2 to be embedded in the limiting groove 31, the end surface of the brake handle 2 abuts against the inner wall of the limiting groove 31 to form a limit, so that the brake state is maintained when the user releases the brake handle 2, without the need for the user to operate with both hands at the same time, thereby improving the convenience of the user using the parking brake.

[0037] The above are the preferred embodiments of the application, which do not limit the protection scope of the application, therefore: any equivalent changes made on the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A parking brake, characterized in that: The device includes a connecting frame (1), a brake handle (2), and a limiting claw (3). The brake handle (2) and the limiting claw (3) are rotatably connected to the surface of the connecting frame (1) at intervals. The rotation axis of the brake handle (2) and the rotation axis of the limiting claw (3) are parallel to each other. The end of the limiting claw (3) has a limiting groove (31) for the end of the brake handle (2) to be inserted. When the brake handle (2) is driven to rotate in a direction close to the limiting groove (31), the limiting claw (3) is pressed and guided to be inserted into the limiting groove (31) to form a limit.

2. The parking brake according to claim 1, characterized in that: The rotating shaft of the limiting claw (3) is connected to an elastic element (5). One end of the elastic element (5) in the elastic direction is connected to the surface of the limiting claw (3), and the other end of the elastic element (5) in the elastic direction is connected to the surface of the connecting frame (1). The elastic element (5) has the tendency to drive the end of the limiting claw (3) with the limiting groove (31) to rotate away from the brake handle (2).

3. The parking brake according to claim 1, characterized in that: The limiting claw (3) includes a rotating part (32), a limiting part (33), and a fixing bolt (34). The rotating part (32) is rotatably connected to the surface of the connecting frame (1). The rotating part (32) has a threaded groove (36) for the end of the fixing bolt (34) to be inserted. The limiting part (33) has a threaded hole (35) for the end of the fixing bolt (34) to pass through. The threaded hole (35) penetrates the outer wall of the limiting part (33). The end of the fixing bolt (34) passes through the threaded hole (35) and is threaded and fixed to the inner wall of the threaded groove (36). The end face of the fixing bolt (34) and the surface of the rotating part (32) clamp the two ends of the limiting part (33) to form a limiting position. The limiting groove (31) is located on the side of the limiting part (33) facing the brake handle (2).

4. The parking brake according to claim 3, characterized in that: The limiting part (33) is slidably connected to the surface of the rotating part (32). The sliding direction of the limiting part (33) is perpendicular to the axis of the rotating part (32). The limiting part (33) moves closer to or further away from the brake handle (2) along the surface of the rotating part (32), and the threaded hole (35) is a waist-shaped groove.

5. The parking brake according to claim 4, characterized in that: The rotating part (32) is connected to the slide rail (4) on the surface facing the limiting part (33). The limiting part (33) is provided with a slide groove (37) that is adapted to the slide rail (4) on the surface facing the rotating part (32). When the limiting part (33) slides on the surface of the rotating part (32), it drives the surface of the slide rail (4) to slide in contact with the inner wall of the slide groove (37).

6. The parking brake according to claim 3, characterized in that: The limiting part (33) has a guide surface (38) at the end facing the limiting groove (31). The guide surface (38) is arc-shaped and can abut against the brake handle (2) and guide the end of the brake handle (2) to be embedded in the limiting groove (31).

7. The parking brake according to claim 6, characterized in that: The brake handle (2) has a buffer surface (21) at the end facing the limiting groove (31). The buffer surface (21) is arc-shaped and can abut against the guide surface (38) and guide the end of the brake handle (2) to be embedded in the limiting groove (31).

8. The parking brake according to claim 3, characterized in that: The rotating part (32) has an abutting arc surface (39) on its end face facing the brake handle (2) for fingers to abut, and the axis of the abutting arc surface (39) faces the brake handle (2).

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