CN219969923U

CN219969923U - Parking brake mechanism

Info

Publication number: CN219969923U
Application number: CN202321732740.5U
Authority: CN
Inventors: 刘通
Original assignee: Zhuhai Titans Energy & Electronic Tech Co ltd
Current assignee: Zhuhai Titan Sports Equipment Co.,Ltd.
Priority date: 2023-07-03
Filing date: 2023-07-03
Publication date: 2023-11-07
Anticipated expiration: 2033-07-03

Abstract

The utility model discloses a parking brake mechanism, and mainly relates to the technical field of brakes; the brake handle comprises a brake handle body and a handle, wherein the handle is hinged with the brake handle body through a rotating shaft, a ratchet wheel is arranged on the rotating shaft, the ratchet wheel and the handle are both fixed on the rotating shaft, a pawl which is matched with the ratchet wheel is arranged in the brake handle body, the pawl is in sliding connection with the brake handle body, and an adjusting structure for pushing and pulling the pawl is arranged on the brake handle body; the utility model can solve the problems that the pull rod and the pressure rod are easy to touch by mistake or the pressure of the pressed position is insufficient due to the fixed position of the pressure rod.

Description

Parking brake mechanism

Technical Field

The utility model relates to the technical field of brakes, in particular to a parking brake mechanism.

Background

The bicycle, lithium battery bicycle and tricycle may slide along the road surface due to the gradient when parked on the slope. Therefore, bicycle factories and brake manufacturers develop parking brake assemblies, so that the bicycles, lithium-ion bicycles and tricycles can fix the brake pull rod or the compression rod at the pressed position after parking, and the bicycles, lithium-ion bicycles and tricycles can be kept in the state of a braking position. However, in the existing parking brake assembly, when the brake pull rod or the pressure rod is fixed in a pressed state, the pressure at the pressed position is insufficient due to false touch or the position point fixation of the pressure rod of the parking mechanism, so that a bicycle, a lithium battery bicycle and a tricycle slide, and the parking effect is poor.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a parking brake mechanism which can solve the problems that a pull rod and a pressure rod are easy to touch by mistake or the pressure of the pressed position is insufficient due to the fixed position of the pressure rod.

The utility model aims to achieve the aim, and the aim is achieved by the following technical scheme:

the utility model provides a parking brake mechanism, includes brake lever main part, handle, and the handle is articulated with the brake lever main part through the pivot, be equipped with the ratchet in the pivot, ratchet, handle are all fixed in the pivot, be equipped with the pawl that suits with the ratchet in the brake lever main part, pawl and brake lever main part sliding connection, and be equipped with the regulation structure that is used for push-and-pull pawl in the brake lever main part.

Preferably, the pawl is provided with a jack penetrating through the pawl, the adjusting structure comprises a deflector rod and a reset spring arranged at one end, far away from the ratchet wheel, of the pawl, the deflector rod is provided with an eccentric structure, the eccentric structure is inserted into the jack, and the periphery of the eccentric structure is abutted to the inner wall of the jack.

Preferably, the eccentric structure is a semi-cylinder arranged on the deflector rod.

Preferably, a shifting handle is arranged at one end of the shifting rod extending out of the brake handle main body, and the shifting rod is rotationally connected with the brake handle main body.

Preferably, a positioning block is arranged on one side of the shifting handle, which is close to the brake handle main body, and a positioning groove which is matched with the positioning block is arranged on the brake handle main body.

Preferably, a thrust spring is sleeved on the deflector rod and fixed in the brake handle main body through a clamp spring, and the deflector handle is pushed to the brake handle main body through the thrust spring.

Preferably, a limiting block is arranged on the shifting handle, and a semicircular limiting groove which is matched with the limiting block is arranged on the brake handle main body.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the ratchet wheel and the pawl are controlled to be separated by the adjusting structure, and when the ratchet wheel is separated from the pawl, the handle can be automatically returned after being held down; when the pawl is pushed to the ratchet wheel, the rotating shaft can only rotate in one direction, the handle is automatically locked at the position of the handle after being held down, and the parking state is achieved, so that the problem that the pull rod and the pressing rod are easy to touch by mistake or the pressure of the pressed position is insufficient due to the fact that the position of the pressing rod is fixed can be solved.

Drawings

FIG. 1 is a cross-sectional view of the present utility model during normal riding;

FIG. 2 is a cross-sectional view of the present utility model when parking is desired;

FIG. 3 is a schematic perspective view of the present utility model;

FIG. 4 is an exploded view of FIG. 3;

FIG. 5 is a schematic illustration of the engagement of the lever with the pawl when the ratchet is disengaged from the pawl;

FIG. 6 is a schematic illustration of the engagement of the lever with the pawl when the ratchet is engaged with the pawl;

FIG. 7 is a schematic view of a lever structure;

fig. 8 is a schematic structural view of the brake lever body.

The reference numbers in the drawings: 1. a brake lever main body; 11. a semicircular limit groove; 2. a handle; 3. a rotating shaft; 4. a ratchet wheel; 5. a pawl; 51. a jack; 61. a deflector rod; 62. a return spring; 63. an eccentric structure; 64. a shifting handle; 65. a positioning block; 66. a positioning groove; 67. a thrust spring; 68. clamping springs; 69. and a limiting block.

Detailed Description

The utility model will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present utility model and are not intended to limit the scope of the present utility model. Further, it will be understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the utility model, and equivalents thereof fall within the scope of the utility model as defined by the claims.

Examples: as shown in figures 1-8, the parking brake mechanism comprises a brake handle main body 1 and a handle 2, wherein the brake handle main body 1 and the handle 2 can adopt the existing brake structure, the handle 2 is hinged with the brake handle main body 1 through a rotating shaft 3, a ratchet wheel 4 is arranged on the rotating shaft 3, the ratchet wheel 4 and the handle 2 are both fixed on the rotating shaft 3, a pawl 5 which is suitable for the ratchet wheel 4 is arranged in the brake handle main body 1, the pawl 5 is in sliding connection with the brake handle main body 1, an adjusting structure for pushing and pulling the pawl 5 is arranged on the brake handle main body 1, the clutch of the ratchet wheel 4 and the pawl 5 is controlled through the adjusting structure, and when the ratchet wheel 4 is separated from the pawl 5, the handle 2 can return automatically after being held down; when the pawl 5 is combined with the ratchet wheel 4, the rotating shaft 3 can only rotate in one direction, and the handle 2 is automatically locked in position after being held down, so that the parking state is achieved.

Preferably, for the convenience of adjustment of ratchet and pawl separation and reunion be equipped with the jack 51 that runs through pawl 5 on the pawl 5, adjust the structure and include driving lever 61 and set up in the reset spring 62 of the one end that pawl 5 kept away from ratchet 4, be equipped with the spout that suits with pawl 5 in brake lever main part 1, reset spring 62's one end and pawl 5 butt, the other end and the interior terminal surface butt of spout, be equipped with eccentric structure 63 on driving lever 61, eccentric structure 63 inserts in jack 51, the periphery and the inner wall butt of jack 51 of eccentric structure 63, and jack 51 can be U type groove, rotates driving lever 61 and drives eccentric structure 63 and rotate, can promote pawl 5, under reset spring 62's cooperation, can accomplish the separation and reunion of ratchet 4 and pawl 5.

Preferably, in order to reduce the manufacturing cost, the eccentric structure 63 is a semi-cylinder disposed on the shift lever 61.

Preferably, in order to facilitate the rotation of the lever, a lever 64 is provided at the end of the lever 61 extending out of the lever body 1, and the lever 61 is rotatably connected to the lever body 1.

Preferably, in order to facilitate the state of locking the combination of the ratchet and the pawl, a positioning block 65 is arranged on one side of the shifting handle 64 close to the brake handle main body 1, and a positioning groove 66 corresponding to the positioning block 65 is arranged on the brake handle main body 1.

Preferably, in order to ensure the stability of the cooperation of the positioning block and the positioning groove, a thrust spring 67 is sleeved on the deflector 61, the thrust spring 67 is fixed in the brake lever main body 1 through a clamp spring 68, and the deflector handle 64 is pushed to the brake lever main body 1 through the thrust spring 67.

Preferably, in order to limit the rotation range of the shifting lever, a limiting block 69 is arranged on the shifting lever 64, and a semicircular limiting groove 11 corresponding to the limiting block 69 is arranged on the brake lever main body 1, so that the shifting lever 64 can only rotate within a range of 180 degrees.

In use, as shown in FIG. 2, toggle lever 61 is rotated 180 degrees, at which time lever 61 moves in semi-circular limiting groove 11 and is limited in time by 180 degrees. The pawl 5 is hinged with the ratchet wheel 4, the handle 2 moves along the A1 direction, and the pawl 5 is locked with the ratchet wheel 4 in a unidirectional way, so that a bicycle, a lithium battery bicycle and a tricycle can be braked and locked. The handle 2 is fixed in the current position. Reference is made to fig. 2, 5, 6 and 8.

In the parking unlocking state, the shift lever 61 is shifted back 180 degrees and limited in the groove, the pawl 5 is separated from the ratchet wheel 4, the handle 2 returns, and the bicycle, the lithium battery bicycle and the tricycle normally run, and referring to fig. 1.

Ratchet wheel 4 in the parking subassembly can be fixed to handle 2 through the U round pin, and ratchet wheel 4 and handle 2 are along the direction A1 motion.

The eccentric 63 of the lever 61 moves within the receptacle 51. Reference is made to fig. 1 and 5.

Claims

1. The utility model provides a parking brake mechanism, includes brake lever main part (1), handle (2), and handle (2) are articulated, characterized by with brake lever main part (1) through pivot (3): be equipped with ratchet (4) on pivot (3), ratchet (4), handle (2) are all fixed on pivot (3), be equipped with pawl (5) that suits with ratchet (4) in brake lever main part (1), pawl (5) and brake lever main part (1) sliding connection, and be equipped with the regulation structure that is used for push-and-pull pawl (5) on brake lever main part (1).

2. A parking brake mechanism as defined in claim 1, wherein: be equipped with jack (51) that runs through pawl (5) on pawl (5), adjust structure including driving lever (61) and set up in pawl (5) one end of keeping away from ratchet (4) reset spring (62), be equipped with eccentric structure (63) on driving lever (61), eccentric structure (63) insert in jack (51), and the periphery of eccentric structure (63) and the inner wall butt of jack (51).

3. A parking brake mechanism as defined in claim 2, wherein: the eccentric structure (63) is a semi-cylinder arranged on the deflector rod (61).

4. A parking brake mechanism as defined in claim 2, wherein: one end of the deflector rod (61) extending out of the brake handle main body (1) is provided with a deflector handle (64).

5. A parking brake mechanism according to claim 4, wherein: one side of the shifting handle (64) close to the brake handle main body (1) is provided with a positioning block (65), and the brake handle main body (1) is provided with a positioning groove (66) which is matched with the positioning block (65).

6. A parking brake mechanism as defined in claim 5, wherein: a thrust spring (67) is sleeved on the deflector rod (61), the thrust spring (67) is fixed in the brake handle main body (1) through a clamp spring (68), and the deflector handle (64) is pushed to the brake handle main body (1) through the thrust spring (67).

7. A parking brake mechanism as defined in claim 5, wherein: a limiting block (69) is arranged on the shifting handle (64), and a semicircular limiting groove (11) which is matched with the limiting block (69) is arranged on the brake handle main body (1).