Fixed calipers for motorcycle

Abstract

The fixed calipers comprise a wheel cylinder shell, a left piston cavity and a right piston cavity are oppositely formed in the wheel cylinder shell, brake pistons are installed in the left piston cavity and the right piston cavity respectively, brake shoes are arranged at the ends of the brake pistons, installation grooves are formed in the middle of the left piston cavity and the middle of the right piston cavity respectively, and the brake shoes are arranged in the installation grooves respectively. A return ring matched with the brake piston is arranged in the mounting groove, and a shoe spring is arranged on the wheel cylinder shell and located between the two brake shoes. The utility model has the beneficial effects that: as a plugging screw plug and a sealing ring are not adopted, the use of parts is reduced while the assembly process is simplified, the assembly is more convenient, and the risk of sealing failure in the later period is avoided. During braking, brake fluid pushes the brake pistons to move towards the center from the rear parts of the left and right piston cavities, and further pushes the brake shoes to move towards the center so as to clamp the brake disc, thereby realizing stable braking of the motorcycle.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle parts technology, and in particular to a fixed caliper for motorcycles. Background Technology

[0002] Currently, most motorcycles with engine displacements greater than 125ml use fixed calipers for their front brakes. The caliper structure uses a sealing screw to press-fit a sealing ring for sealing, which makes the installation and assembly process complicated and carries the risk of seal failure in the later stages of the product's lifespan. Utility Model Content

[0003] The purpose of this invention is to provide a fixed caliper for motorcycles that allows for quick installation and assembly while avoiding the risk of later seal failure.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A fixed caliper for motorcycles includes a brake cylinder housing. A left piston chamber and a right piston chamber are disposed opposite to each other in the brake cylinder housing. A brake piston is installed in both the left and right piston chambers. A brake shoe is provided at the end of the brake piston. A mounting groove is provided in the middle of both the left and right piston chambers. A return ring adapted to the brake piston is provided in the mounting groove. A shoe spring is provided on the brake cylinder housing between the two brake shoes.

[0006] Furthermore, both the left piston chamber and the right piston chamber are provided with piston dust seals.

[0007] Furthermore, both ends of the brake shoe are provided with positioning ears, and the brake pad housing is provided with positioning grooves that are adapted to the positioning ears.

[0008] Furthermore, the pump housing is provided with mounting holes.

[0009] Furthermore, the pump housing is provided with an oil passage connecting the left piston chamber and the right piston chamber, and the oil passage is provided with an oil inlet and a vent hole adapted to the oil passage.

[0010] Furthermore, a vent nozzle is installed on the vent hole, and a vent nozzle dust cover is installed on the vent nozzle.

[0011] Furthermore, an oil inlet plug is installed on the oil inlet hole.

[0012] This utility model has the following advantages:

[0013] 1. By eliminating the use of plugs and sealing rings, the assembly process is simplified, the number of parts used is reduced, assembly is more convenient, and the risk of later seal failure is avoided.

[0014] 2. When braking, the brake fluid pushes the brake piston from the rear of the left and right piston chambers toward the center, which in turn pushes the brake pads toward the center to clamp the brake disc, thus achieving smooth braking of the motorcycle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 for Figure 1 A cross-sectional view of plane AA.

[0017] Figure 3 for Figure 1 A cross-sectional view of the BB plane.

[0018] Figure 4 This is a partial cross-sectional view from another perspective of the present invention.

[0019] Figure 5 for Figure 4 A cross-sectional view of the C-plane.

[0020] In the diagram, 1-cylinder housing, 2-left piston chamber, 3-right piston chamber, 4-brake piston, 5-brake shoe, 6-return ring, 7-shoe spring, 8-piston dust seal, 10-positioning ear, 11-positioning groove, 12-mounting hole, 13-oil passage, 14-oil inlet, 15-vent hole, 16-vent nozzle, 17-vent nozzle dust cover, 18-oil inlet blockage. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] refer to Figure 1-5 As shown, one embodiment of this utility model is as follows:

[0028] A fixed caliper for motorcycles includes a brake cylinder housing 1. A left piston chamber 2 and a right piston chamber 3 are disposed opposite to each other in the brake cylinder housing 1. A brake piston 4 is installed in both the left piston chamber 2 and the right piston chamber 3. A brake shoe 5 is provided at the end of the brake piston 4. A mounting groove is provided in the middle of both the left piston chamber 2 and the right piston chamber 3. A return ring 6 adapted to the brake piston is provided in the mounting groove. A shoe spring 7 is provided on the brake cylinder housing 1 between the two brake shoes 5.

[0029] When the driver gives the brake command, the brake fluid pushes the brake pistons from the rear of the left and right piston chambers toward the center, which in turn pushes the brake pads toward the center to clamp the brake disc, thus achieving smooth braking of the motorcycle; when the driver releases the brake command, the brake pistons at both ends return to their original positions by their respective return rings, and the brake pads no longer contact the brake disc.

[0030] By eliminating the use of plugs and sealing rings, the assembly process is simplified while reducing the number of parts used. In the manufacturing of the brake caliper housing, an angle milling head is used to create the caliper body, ensuring consistent depth of the left and right piston chambers, resulting in a more compact structure, synchronizing the left and right brake pistons, and improving braking performance.

[0031] In this embodiment, both the left piston chamber 2 and the right piston chamber 3 are provided with piston dust seals 8. The piston dust seals ensure the piston's dust prevention effect, and together with the return ring, they can effectively prevent brake fluid leakage.

[0032] In this embodiment, both ends of the brake shoe 5 are provided with positioning ears 10, and the brake caliper housing 1 is provided with positioning grooves 11 that fit the positioning ears 10. The smooth movement of the brake shoe is achieved through the cooperation of the positioning ears 10 and the positioning grooves 11. Furthermore, to improve the braking effect, multiple brake pistons can be provided according to actual usage requirements. (Reference) Figure 2 As shown, in this embodiment, there are two left piston chambers and two right piston chambers, and two brake pistons are installed accordingly.

[0033] In this embodiment, the pump housing 1 is provided with a mounting hole 12, which is used to connect to the brake bracket of the motorcycle.

[0034] In this embodiment, the pump housing 1 is provided with an oil passage 13 that connects the left piston chamber 2 and the right piston chamber 3. The oil passage 13 is provided with an oil inlet 14 and a vent 15 adapted to the oil passage.

[0035] The oil passage 13 is used to synchronize the brake pistons on the left and right sides to achieve smooth braking. In the braking state, the return ring undergoes elastic deformation. After the brake is withdrawn, the return ring returns to its initial state, driving the brake piston to return to its original position and release the brake.

[0036] A vent nozzle 16 is installed on the vent hole 15, and a vent nozzle dust cover 17 is installed on the vent nozzle 16.

[0037] An oil inlet plug 18 is installed on the oil inlet hole 14. During installation and use, the oil inlet plug is removed and connected to the motorcycle brake hose.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fixed caliper for a motorcycle characterized by: The utility model provides a kind of brake master cylinder, including pump shell, left piston cavity and right piston cavity are oppositely provided in the pump shell, brake piston is mounted in the left piston cavity and the right piston cavity, the end of brake piston is equipped with brake shoe, the middle part of the left piston cavity and the right piston cavity is equipped with installation slot, the installation slot is equipped with the return ring of brake piston, and shoe spring is equipped between the two brake shoes on the pump shell.

2. A fixed caliper for a motorcycle according to claim 1, characterized in that: The left piston cavity and the right piston cavity are both equipped with piston dust seal.

3. A fixed caliper for a motorcycle according to claim 1, characterized in that: The two ends of the brake shoe are both equipped with positioning lug, and the pump shell is equipped with positioning slot matched with the positioning lug.

4. The fixed caliper of claim 1, wherein: The pump shell is equipped with mounting hole.

5. The fixed caliper of claim 1, wherein: The pump shell is equipped with oil passage connected with the left piston cavity and the right piston cavity, and the oil passage is equipped with oil inlet hole and air release hole matched with the oil passage.

6. A fixed caliper brake for a motorcycle as defined in claim 5, wherein: The air release hole is equipped with air release valve, and the air release valve is equipped with air release valve dust cover.

7. A fixed caliper brake for a motorcycle as defined in claim 5, wherein: The oil inlet hole is equipped with oil inlet hole plug.

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