Motorcycle brake device

Abstract

The utility model discloses a brake device for a motorcycle, comprising an upper shell, a lower shell, and an upper brake pad and a lower brake pad respectively arranged on the upper shell and the lower shell, wherein piston bodies are respectively arranged in mounting grooves on the inner sides of the upper shell and the lower shell, and are respectively connected with the inner sides of the upper brake pad and the lower brake pad through the piston bodies, wherein the piston body comprises a piston seat and a hemispherical piston end cover arranged on the piston seat, wherein the hemispherical surface of the hemispherical piston end cover is in spherical contact with the arc groove, thereby reducing the jamming caused by the inclination of the hemispherical piston end cover and the piston seat, and automatically adjusting the angle of the hemispherical piston end cover on the piston seat, so that the piston body always keeps a straight line operation to move the upper brake pad or the lower brake pad, thereby reducing the friction resistance generated when the piston body is running, and avoiding the problem of the piston body being stuck when returning to its original position and affecting the braking of the motorcycle.

Description

Technical Field

[0001] The utility model relates to the technical field of motorcycle brake devices, in particular to a motorcycle brake device. Background Art

[0002] In the brake piston structure used in conjunction with a motorcycle lock, the piston structure will be misaligned (not vertical, causing the piston on the caliper to tilt) after the assembly of the wheel hub, brake disc, adapter and other accessories due to insufficient dimensional accuracy and inaccurate matching between the structures. This will increase the probability of wear between the piston in the caliper and the piston hole on the caliper, affect the return of the piston, and cause problems such as brake stagnation, which will bring certain safety hazards to the operation of the brake in conjunction with the motorcycle;

[0003] Therefore, the utility model provides a motorcycle brake device which can prevent the piston from getting stuck when returning to its original position. Summary of the invention

[0004] The purpose of the utility model is to provide a motorcycle brake device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A motorcycle brake device comprises an upper shell, a lower shell, and an upper brake pad and a lower brake pad respectively arranged on the upper shell and the lower shell, wherein a piston body is respectively arranged in a mounting groove on the inner side of the upper shell and the lower shell, and is respectively connected to the inner side of the upper brake pad and the lower brake pad through the piston body;

[0007] The piston body comprises a piston seat and a hemispherical piston end cover arranged on the piston seat, and the inner side surfaces of the upper brake pad and the lower brake pad are respectively fitted with the outer plane of the hemispherical piston end cover;

[0008] Connecting bolts are inserted into corresponding screw holes between the upper shell and the lower shell, and the upper shell and the lower shell are fixed by the connecting bolts.

[0009] Furthermore, a rectangular sealing ring is provided in the installation groove to seal the piston body. The rectangular sealing ring is installed in the installation groove in cooperation with the piston body to maintain the sealing inside the piston body after the piston body and the installation groove are assembled.

[0010] Furthermore, the inner sides of the upper shell and the lower shell are respectively provided with grooves for evading the upper brake pad and the lower brake pad, and the grooves are used to embed the upper brake pad and the lower brake pad on the upper shell and the lower shell when the upper shell and the lower shell are installed.

[0011] Furthermore, a brake pad guide pin is provided through a hole in the middle part of the outer side of the slot of the lower shell body, and the end of the brake pad guide pin passes through the upper brake pad and the lower brake pad in sequence and is connected to the upper shell body, and the brake pad guide pin is used to cooperate with the upper brake pad and the lower brake pad to guide movement during braking.

[0012] Furthermore, the arc groove on the piston seat supports the hemispherical surface of the hemispherical piston end cover, so that when the hemispherical piston end cover produces a tilt angle in coordination with the movement of the upper brake pad or the lower brake pad, the hemispherical surface of the hemispherical piston end cover tilts at a corresponding angle in the arc groove on the piston seat, thereby reducing the probability of jamming when the hemispherical piston end cover and the piston seat are tilted in coordination.

[0013] Furthermore, a clearance groove is provided on one side of the upper shell body to keep the upper brake pad away from the lower brake pad. The upper brake pad is arranged not to contact the lower brake pad. The clearance groove is used to provide a clearance space for the upper brake pad to move toward the lower brake pad for braking.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The motorcycle brake device forms a piston body through a piston seat and a hemispherical piston end cover on the relative inner sides of an upper shell body and a lower shell body, respectively, and divides the piston body into two parts. The piston seat divided into the piston body and the hemispherical surface of the hemispherical piston end cover are in corresponding contact. When the installed upper brake pad or lower brake pad is tilted by braking, the hemispherical surface of the hemispherical piston end cover is correspondingly tilted in the arc groove on the piston seat. Since the hemispherical surface of the hemispherical piston end cover is in spherical contact with the arc groove, the jamming caused by the inclination of the hemispherical piston end cover and the piston seat is reduced, and the angle of the hemispherical piston end cover on the piston seat is automatically adjusted, so that the piston body always keeps running in a straight line to move the upper brake pad or the lower brake pad, reducing the friction resistance generated by the operation of the piston body, and avoiding the problem of the piston body being stuck when returning to its original position and affecting the braking of the motorcycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 Schematic diagram of the explosion structure;

[0018] Figure 3 This is a schematic diagram of the main cross-sectional structure of the piston body of the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the connection structure between the piston seat and the hemispherical piston end cover.

[0020] In the figure: 1. upper shell; 2. lower shell; 3. piston body; 4. mounting groove; 5. upper brake pad; 6. lower brake pad; 7. piston seat; 8. hemispherical piston end cover; 9. screw hole; 10. connecting bolt; 11. rectangular sealing ring; 12. slot; 13. air avoidance groove; 14. arc groove; 15. socket; 16. brake pad guide pin. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 , the utility model provides a technical solution:

[0023] A motorcycle brake device comprises an upper shell 1, a lower shell 2, and an upper brake pad 5 and a lower brake pad 6 respectively arranged on the upper shell 1 and the lower shell 2, wherein a piston body 3 is respectively arranged in a mounting groove 4 on the inner side of the upper shell 1 and the lower shell 2, and is respectively connected to the inner side of the upper brake pad 5 and the lower brake pad 6 through the piston body 3;

[0024] The piston body 3 includes a piston seat 7 and a hemispherical piston end cover 8 disposed on the piston seat 7. The inner side surfaces of the upper brake pad 5 and the lower brake pad 6 are respectively fitted with the outer plane of the hemispherical piston end cover 8.

[0025] Connecting bolts 10 penetrate through corresponding screw holes 9 between the upper shell 1 and the lower shell 2 , and the upper shell 1 and the lower shell 2 are fixed by the connecting bolts 10 .

[0026] A rectangular sealing ring 11 is provided in the installation groove 4 to seal the piston body 3 . The rectangular sealing ring 11 is installed in the installation groove 4 in cooperation with the piston body 3 to maintain the sealing inside the piston body 3 after the piston body 3 and the installation groove 4 are assembled.

[0027] The inner sides of the upper shell 1 and the lower shell 2 are respectively provided with grooves 12 for evading the upper brake pad 5 and the lower brake pad 6. The grooves 12 are used to fit the upper shell 1 and the lower shell 2 so that the upper brake pad 5 and the lower brake pad 6 can be embedded in the upper shell 1 and the lower shell 2 when the upper shell 1 and the lower shell 2 are installed.

[0028] A brake pad guide pin 16 is provided in the middle part of the outer side of the slot 12 of the lower shell 2 through the insertion hole 15. The brake pad guide pin 16 passes through the upper brake pad 5 and the lower brake pad 6 in sequence through the end of the brake pad guide pin 16 and is connected to the upper shell 1. The end of the brake pad guide pin 16 is fixed by an R-shaped cotter pin. The brake pad guide pin 16 is used to cooperate with the upper brake pad 5 and the lower brake pad 6 to guide movement during braking.

[0029] The arc groove 14 on the piston seat 7 supports the hemispherical surface of the hemispherical piston end cover 8, so that when the hemispherical piston end cover 8 produces a tilt angle in coordination with the movement of the upper brake pad 5 or the lower brake pad 6, the hemispherical surface of the hemispherical piston end cover 8 tilts at a corresponding angle in the arc groove 14 on the piston seat 7, thereby reducing the probability of jamming when the hemispherical piston end cover 8 and the piston seat 7 are tilted in coordination.

[0030] A clearance groove 13 is provided on one side of the upper shell 1 to keep the upper brake pad 5 away from the lower brake pad 6. The upper brake pad 5 is arranged without contact with the lower brake pad 6. The clearance groove 13 is used to provide a clearance space for the upper brake pad 5 to move toward the lower brake pad 6 to cooperate with the brake.

[0031] The motorcycle brake device forms a piston body 3 through a piston seat 7 and a hemispherical piston end cover 8 on the relative inner sides of an upper shell 1 and a lower shell 2, respectively, and divides the piston body 3 into two parts. The hemispherical surfaces of the piston seat 7 and the hemispherical piston end cover 8 formed by the piston body 3 are in corresponding contact. When the installed upper brake pad 5 or lower brake pad 6 is tilted by braking, the hemispherical surface of the hemispherical piston end cover 8 is correspondingly tilted in the arc groove 14 on the piston seat 7. Since the hemispherical surface of the hemispherical piston end cover 8 is in spherical contact with the arc groove 14, the jamming caused by the inclination of the hemispherical piston end cover 8 and the piston seat 7 is reduced, and the angle of the hemispherical piston end cover 8 on the piston seat 7 is automatically adjusted, so that the piston body 3 always maintains a straight line operation to move the upper brake pad 5 or the lower brake pad 6, reduces the friction resistance generated when the piston body 3 is running, and avoids the problem of the piston body 3 being stuck when returning to its original position and affecting the braking of the motorcycle.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A motorcycle brake device, comprising an upper housing (1), a lower housing (2), and an upper brake pad (5) and a lower brake pad (6) respectively arranged on the upper housing (1) and the lower housing (2), characterized in that: The upper shell (1) and the lower shell (2) are provided with a piston body (3) in the mounting groove (4) on the inner side thereof, and are respectively connected to the inner side surfaces of the upper brake pad (5) and the lower brake pad (6) through the piston body (3); The piston body (3) comprises a piston seat (7) and a hemispherical piston end cover (8) arranged on the piston seat (7), and the inner side surfaces of the upper brake pad (5) and the lower brake pad (6) are respectively in contact with the outer surface of the hemispherical piston end cover (8); Connecting bolts (10) penetrate through corresponding screw holes (9) between the upper shell (1) and the lower shell (2), and the upper shell (1) and the lower shell (2) are fixed by the connecting bolts (10).

2. A motorcycle brake device according to claim 1, characterized in that: A rectangular sealing ring (11) is provided in the installation groove (4) and is sealably supported by the piston body (3).

3. A motorcycle brake device according to claim 1, characterized in that: The inner sides of the upper shell (1) and the lower shell (2) are respectively provided with slots (12) for evading the upper brake pad (5) and the lower brake pad (6).

4. A motorcycle brake device according to claim 3, characterized in that: A brake pad guide pin (16) is provided in the middle of the outer side of the slot (12) of the lower shell (2) through a plug hole (15), and the end of the brake pad guide pin (16) passes through the upper brake pad (5) and the lower brake pad (6) in sequence and is connected to the upper shell (1).

5. The motorcycle brake device according to claim 1, characterized in that: The arc-shaped groove (14) on the piston seat (7) receives the hemispherical surface of the hemispherical piston end cover (8).

6. A motorcycle brake device according to claim 1, characterized in that: A clearance groove (13) is provided on one side of the upper shell (1) to keep the upper brake pad (5) away from the lower brake pad (6); the upper brake pad (5) and the lower brake pad (6) are arranged without contact.

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