Clamp applied to bicycle brake system

Abstract

The utility model discloses a clamp applied to a bicycle brake system. The clamp comprises a clamp shell and a brake assembly. The brake assembly comprises a lining and a piston; a mounting groove for mounting the piston is formed in the clamp shell; when the piston is located in the mounting groove, one side, far away from the lining, of the piston and the mounting groove form an oil storage cavity; the clamp shell is further provided with a first oil conveying channel and a second oil conveying channel which are communicated with the oil storage cavity, a first sealing piece is arranged at an opening of the first oil conveying channel, and a second sealing piece is arranged at an opening of the second oil conveying channel. By arranging the first sealing piece, the second sealing piece and the second oil conveying channel, the oil injection channel and the corresponding oil injection port are additionally arranged, air in the clamp can be rapidly discharged in the oil injection process of the clamp, when the multiple oil storage cavities are formed in the clamp, internal circulation of brake oil in the multiple oil storage cavities is achieved, and the performance of the clamp is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle manufacturing, in particular to a caliper applied to a bicycle braking system. Background Art

[0002] ‌The braking system of a bicycle mainly includes a brake lever, a brake cable or a brake oil pipe, and a brake caliper. The brake lever is usually fixed at both ends of the handlebar, and the braking force is controlled by the relaxation and closing of the fingers. The brake cable or the brake oil pipe is responsible for connecting the brake lever and the brake caliper to transmit the braking force. The brake caliper is fixed at the upper or lower end of the front fork or the rear upper fork. By tightening the brake cable or compressing the brake oil, the brake pads or the brake shoes are locked, so as to realize the braking function. Among them, transmitting the braking force through the hydraulic brake oil has greater braking force and better adjustability.

[0003] In the existing technology of transmitting the braking force through the hydraulic brake oil, during the production process, it is necessary to inject oil into the brake caliper to fill the oil storage space in the brake caliper with brake oil and discharge the air to ensure the performance of the brake caliper. That is, how to quickly and effectively discharge the air in the brake caliper has become an urgent problem to be solved by bicycle manufacturing enterprises. Especially when defective products appear and manual oil injection is required, the operation difficulty greatly increases the workload of employees.

[0004] In view of this, the utility model will provide a caliper applied to a bicycle braking system to solve the above problems. Summary of the Invention

[0005] In order to solve the problem that when the existing brake caliper is injected with oil, the air in it cannot be quickly and effectively discharged manually, the utility model provides a caliper applied to a bicycle braking system.

[0006] The utility model is realized by the following technical solutions: A caliper applied to a bicycle braking system includes a caliper housing and a braking assembly arranged on the caliper housing. The braking assembly is used to brake the bicycle. Among them, the braking assembly includes brake shoes and a piston for pushing the brake shoes to move. The caliper housing is provided with an installation groove for installing the piston. When the piston is located in the installation groove, a oil storage cavity is formed between the side of the piston away from the brake shoes and the installation groove. The caliper housing is provided with a first oil transmission channel and a second oil transmission channel communicated with the oil storage cavity.

[0007] On the basis of the above solution, at least one installation groove is provided; the number of pistons is set to match the installation groove.

[0008] On the basis of the above solution, an oil inlet through hole is opened on the caliper housing, and the oil inlet through hole is communicated with the first oil transmission channel.

[0009] On the basis of the above solution, a first seal is provided at the opening of the first oil pipeline, and a second seal is provided at the opening of the second oil pipeline; an internal thread structure is provided on the inner wall of the openings of the first oil pipeline and the second oil pipeline.

[0010] On the basis of the above solution, the first seal and the second seal are provided with an external thread structure adapted to the internal thread structure.

[0011] On the basis of the above solution, when a plurality of oil storage chambers are provided in the oil storage cavity, the plurality of oil storage chambers communicate through the first oil pipeline and the second oil pipeline.

[0012] On the basis of the above solution, a limiting groove is provided on the inner wall of the installation groove, and a first sealing ring is provided in the limiting groove; the first sealing ring is located between the piston and the inner wall of the installation groove.

[0013] On the basis of the above solution, a second sealing ring is sleeved on both the first seal and the second seal.

[0014] On the basis of the above solution, the braking assembly further includes a spring piece, which is located on the side of the piston away from the oil storage cavity and between the piston and the brake pad.

[0015] On the basis of the above solution, the brake pad and the spring piece are arranged on the caliper housing through a fixing member.

[0016] Compared with the prior art, the present application provides a first seal, a second seal and a second oil pipeline, adds an oil injection channel and a corresponding oil injection port, can quickly discharge the air in the oil storage cavity during the oil injection process of the caliper, and ensures the performance of the caliper; at the same time, when a plurality of oil storage cavities are provided, the plurality of oil storage cavities communicate through the first oil pipeline and the second oil pipeline, so that the brake oil in the plurality of oil storage cavities realizes internal circulation, which can ensure that a plurality of pistons push the brake pads to move at the same time and improve the braking effect on the bicycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic diagram of the overall structure of the caliper of the present invention.

[0019] Figure 2 is Figure 1 a schematic structural diagram from another perspective.

[0020] Figure 3 is Figure 1 an exploded schematic diagram of the clamp shown.

[0021] Figure 4 is Figure 1 a schematic structural diagram from another perspective.

[0022] Figure 5 is Figure 4 a cross-sectional view taken along A-A in

[0023] Figure 6 is Figure 4 a cross-sectional view taken along B-B in

[0024] Figure 7 is a schematic diagram of the first oil delivery channel and the second oil delivery channel in the single-cylinder clamp communicating with the oil storage cavity.

[0025] Figure 8 is a wireframe schematic diagram of the first oil delivery channel and the second oil delivery channel in the single-cylinder clamp communicating with the oil storage cavity.

[0026] As shown in the figure: clamp housing 10, through slot 101, oil inlet through hole 102, installation slot 103, opening hole 104, opening cover plate 105, installation part 106, limiting slot 107, first oil delivery channel 108, second oil delivery channel 109; braking assembly 20, brake lining 201, piston 202, first sealing ring 203, elastic sheet 204; oil inlet pipe 30, sealing sleeve 40, first seal 50, second seal 60, second sealing ring 70, oil storage cavity 80. Specific Embodiments

[0027] In order to make the objectives, technical solutions and beneficial technical effects of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described in this specification are only for explaining the present utility model and not for limiting the present utility model.

[0028] It should also be understood that the terms used in this specification of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. As used in this specification of the present utility model and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0029] It should also be further understood that the term "and / or" used in the specification and appended claims of the present utility model refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0030] As Figures 1-3 shown, the present utility model provides a caliper applied to a bicycle braking system. The caliper can be a front and rear caliper in the bicycle braking system. The caliper transmits braking force by compressing brake oil, thereby realizing the function of braking the bicycle. When the caliper is refueled, it can quickly discharge the air in the caliper, improving the product performance and working efficiency. It should be noted that this application will take the structure of a single-cylinder rear caliper as an example for illustration.

[0031] Specifically, the caliper applied to the bicycle braking system includes a caliper housing 10 and a braking assembly 20 provided on the caliper housing 10. The caliper housing 10 is an integrally formed structure. The braking assembly 20 is used to brake the bicycle to ensure riding safety. A through groove 101 penetrating the caliper housing 10 is provided on the caliper housing 10, and the braking assembly 20 is installed in the through groove 101 through a fixing member (not shown).

[0032] An installation portion 106 is provided on the caliper housing 10. An installation through hole (not shown) is provided on the installation portion 106, and the caliper housing 10 is fixed to the bicycle through the installation through hole.

[0033] An oil inlet through hole 102 is further provided on the caliper housing 10. The oil inlet through hole 102 is connected to an oil inlet pipe 30. Further, the oil inlet pipe 30 is arranged in the oil inlet through hole 102 through a sealing sleeve 40.

[0034] An installation groove 103 is provided in the caliper housing 10. The opening of the installation groove 103 is communicated with the through groove 101 (see Figure 3 ). An opening hole 104 is further provided on the caliper housing 10. The opening hole 104 is opposite to the installation groove 103, and the opening hole 104 is sealed by an opening cover plate 105. The opening hole 104 and the opening cover plate 105 can cooperate to form a new installation groove 103. That is, it can be understood that the caliper housing 10 is provided with two installation grooves 103, and they are arranged oppositely.

[0035] The braking assembly 20 includes a brake pad 201 and a piston 202 that pushes the brake pad 201 to move. The brake pad 201 is located within the through groove 101, and the piston 202 is installed within the installation groove 103. When the piston 202 is located within the installation groove 103, an oil storage cavity 80 is formed between the side of the piston 202 away from the brake pad 201 and the installation groove 103. It can be understood that this caliper is a single-cylinder caliper, and the brake pad 201, the installation groove 103, and the oil storage cavity 80 are all provided in two. Moreover, by changing the amount of oil within the oil storage cavity 80, the piston 202 can be pushed closer to or farther away from the brake pad 201, thereby enabling the braking assembly 20 to control the braking of the bicycle.

[0036] Furthermore, a first sealing ring 203 is provided between the circumferential side of the piston 202 and the inner wall of the installation groove 103, and a limiting groove 107 adapted to the first sealing ring 203 is provided on the inner wall of the installation groove 103. During the process of the piston 202 approaching or moving away from the brake pad 201, the first sealing ring 203 can prevent the brake fluid from flowing out of the opening of the installation groove 103.

[0037] Specifically, the braking assembly 20 further includes a spring piece 204. The spring piece 204 is located on the side of the piston 202 away from the oil storage cavity 80 and between the piston 202 and the brake pad 201. The spring piece 204 has strong deformation ability. When the piston 202 moves away from the brake pad 201, the spring piece 204 can drive the brake pad 201 away from the brake pads of the bicycle, thereby ensuring the normal use of the caliper. The spring piece 204 and the brake pad 201 are installed on the caliper housing through fixing members.

[0038] Please refer to Figures 4-8 simultaneously. A first oil delivery channel 108 and a second oil delivery channel 109 (due to the attached Figures 5-6 is an attached Figure 4 cross-sectional view, and the black parts of the first oil delivery channel 108 and the second oil delivery channel 109 shown thereon are not visible) that communicate with the oil storage cavity 80 are provided on the caliper housing 10. The oil inlet through hole 102 communicates with the first oil delivery channel 108. A first sealing member 50 is provided at the opening of the first oil delivery channel 108, and a second sealing member 60 is provided at the opening of the second oil delivery channel 109. It can be understood that the caliper is a single-cylinder caliper, and there are two pistons 202 on the caliper. The first oil delivery channel 108 communicates with two oil storage cavities 80, and the second oil delivery channel 109 communicates with two oil storage cavities 80. The two oil storage cavities 80 achieve the internal circulation of the brake fluid through the first oil delivery channel 108 and the second oil delivery channel 109. Therefore, during the oil injection process, the air within the oil storage cavity can be quickly discharged, ensuring the performance of the caliper. It should be noted that if the caliper housing 10 is a double-cylinder caliper, the two oil storage cavities on the same side can be set to be connected.

[0039] Furthermore, the inner wall of the openings of the first oil delivery channel 108 and the second oil delivery channel 109 is provided with an internal thread structure. The opening with the internal thread structure can be understood as the oil injection port of the caliper; the first seal 50 and the second seal 60 are provided with an external thread structure adapted to the internal thread structure. The first seal 50 and the second seal 60 can be set as screws or bolts; a second sealing ring 70 is sleeved on the first seal 50 and the second seal 60, and the second sealing ring 70 is used to enhance the sealing effect of the first seal 50 and the second seal 60 on the first oil delivery channel 108 and the second oil delivery channel 109.

[0040] In summary, by providing the first oil delivery channel 108 and the second oil delivery channel 109 on the caliper housing 10, and providing the first seal 50 on the first oil delivery channel 108 and the second seal 60 on the second oil delivery channel 109, the present device increases the oil injection channels and corresponding oil injection ports, and can quickly discharge the air in the oil storage cavity 80, the first oil delivery channel 108 and the second oil delivery channel 109 during the oil injection process of the caliper, ensuring the performance of the caliper; at the same time, when multiple oil storage cavities 80 are provided, the multiple oil storage cavities 80 are connected through the first oil delivery channel 108 and the second oil delivery channel 109, enabling the brake oil in the multiple oil storage cavities to achieve internal circulation, which can ensure that the multiple pistons 202 simultaneously push the brake pads 201 to move correspondingly, improving the braking effect on the bicycle.

[0041] The present utility model is not limited solely to what is described in the specification and embodiments. Therefore, for those skilled in the art, additional advantages and modifications can be easily achieved. Thus, without departing from the spirit and scope of the general concept defined by the claims and their equivalents, the present utility model is not limited to specific details, representative devices, and the illustrated examples shown and described herein.

Claims

1. A caliper applied to a bicycle braking system, characterized in that: It includes a caliper housing and a braking assembly provided on the caliper housing, and the braking assembly is used for braking a bicycle; wherein, the braking assembly includes a brake pad and a piston for pushing the brake pad to move; the caliper housing is provided with an installation groove for installing the piston, and when the piston is located in the installation groove, an oil storage cavity is formed between the side of the piston away from the brake pad and the installation groove; the caliper housing is provided with a first oil delivery channel and a second oil delivery channel communicated with the oil storage cavity.

2. The caliper applied to the bicycle braking system according to claim 1, characterized in that: At least one installation groove is provided; the number of pistons is set to match the installation groove.

3. The caliper applied to a bicycle braking system according to claim 1, characterized in that: An oil inlet through hole is provided on the caliper housing, and the oil inlet through hole is communicated with the first oil delivery channel.

4. The caliper applied to a bicycle braking system according to claim 1, characterized in that: A first seal is provided at the opening of the first oil delivery channel, and a second seal is provided at the opening of the second oil delivery channel; an internal thread structure is provided on the inner wall at the openings of the first oil delivery channel and the second oil delivery channel.

5. The caliper applied to a bicycle braking system according to claim 4, characterized in that: The first seal and the second seal are provided with an external thread structure adapted to the internal thread structure.

6. The caliper applied to a bicycle braking system according to claim 2, wherein: When a plurality of oil storage cavities are provided, the plurality of oil storage cavities are communicated through the first oil delivery channel and the second oil delivery channel.

7. The caliper applied to a bicycle braking system according to claim 1, wherein: A limiting groove is provided on the inner wall of the installation groove, and a first sealing ring is provided in the limiting groove; the first sealing ring is located between the piston and the inner wall of the installation groove.

8. The caliper applied to the bicycle braking system according to claim 4, characterized in that: A second sealing ring is sleeved on both the first seal and the second seal.

9. The caliper applied to a bicycle braking system according to claim 1, characterized in that: The braking assembly further includes a shrapnel, and the shrapnel is located on the side of the piston away from the oil storage cavity and between the piston and the brake pad.

10. The caliper applied to a bicycle braking system according to claim 9, characterized in that: The brake pad and the shrapnel are arranged on the caliper housing through a fixing member.

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