Dustproof assembly for brake calipers and brake caliper assembly adopting dustproof assembly

Abstract

The invention relates to the field of brake calipers, in particular to a dustproof assembly for brake calipers and a brake caliper assembly adopting the dustproof assembly. The dust cover comprises a cover body, and a sleeving through hole is formed in the cover body; the cover body comprises a damping boss; the damping boss is connected with a protective boss; the dustproof assembly is mainly provided with a damping boss and a protection boss. The damping boss plays a role of a traditional rectangular sealing ring and is used for sealing an inner cavity of the calipers and achieving the damping and buffering effects, and the protection boss mainly plays a role in preventing water and dust; according to the brake caliper assembly, the functions of two traditional components can be achieved through one component, the investment of mold cost can be greatly reduced, and meanwhile the number and types of parts of the brake caliper assembly are reduced.

Description

Technical Field

[0001] The invention relates to the field of brake calipers, in particular to a dustproof assembly for a brake caliper and a brake caliper assembly using the dustproof assembly. Background Art

[0002] For traditional brake calipers, the dustproof seal between the caliper piston and the caliper body is completed by two parts: a rectangular sealing ring and a piston dust cover. The main function of the rectangular sealing ring is to seal the caliper brake fluid and provide shock absorption and buffering, while the main function of the piston dust cover is to prevent water and dust.

[0003] During production and processing, it is necessary to develop two sets of component molds, which increases the number of components and management costs. At the same time, if the piston and the caliper body are not equipped with an anti-rotation structure, the assembly and axial positioning of the rectangular sealing ring will be more difficult.

[0004] In other words, the disadvantage of the prior art is that the waterproof, dustproof and shock-absorbing properties of the brake caliper require at least two components to achieve, and when the piston and the caliper body are provided with anti-rotation structures, the assembly and axial positioning of the rectangular sealing ring will be more difficult.

[0005] Therefore, in order to improve at least one of the above problems, it is necessary to optimize the design of the existing caliper structure or dust cover. Summary of the invention

[0006] The object of the present invention is to provide a dustproof assembly which is suitable for a brake caliper and can simultaneously achieve waterproofing, dustproofing and shock absorption.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A dustproof assembly for a brake caliper, comprising a dustproof cover; the dustproof cover comprises a cover body, and the cover body is provided with a sleeve through hole;

[0009] The cover body includes a shock-absorbing boss; the shock-absorbing boss is connected to a protective boss.

[0010] The shock-absorbing boss is connected to the protective boss via a connecting rib.

[0011] A positioning boss is provided on the side of the cover body.

[0012] A positioning frame is arranged in the cover body.

[0013] The connecting ribs are distributed in a meandering manner.

[0014] A guide frustum groove is provided at the end of the cover body; the guide frustum groove is arranged at the end of the sleeve through hole; the guide frustum groove is connected to the sleeve through hole; and the larger end of the guide frustum groove opening is arranged away from the sleeve through hole.

[0015] The side of the protective boss away from the connecting rib is an arc-shaped surface.

[0016] A brake caliper assembly comprises a caliper body, the caliper body is provided with a piston, and the piston is provided with the dustproof assembly.

[0017] The piston is connected to the caliper body through an anti-rotation mechanism, and the anti-rotation mechanism includes an anti-rotation groove arranged on the caliper body. The piston is provided with an anti-rotation boss; the anti-rotation boss on the piston is clamped in the anti-rotation groove in the caliper body.

[0018] The piston and the caliper body are provided with a slot assembly for installing a dustproof assembly; the slot assembly includes a mounting recessed slot arranged at the end of the caliper body; a clamping side slot is provided on the inner wall of the mounting recessed slot; and the piston is provided with a clamping recessed slot matching the protective boss.

[0019] The advantages of the present invention are:

[0020] The invention discloses a dustproof assembly for a brake caliper and a brake caliper assembly using the dustproof assembly.

[0021] The dustproof assembly disclosed in the present invention mainly comprises a shock-absorbing boss and a protective boss; in the present invention, the shock-absorbing boss assumes the role of a traditional rectangular sealing ring, which is used to seal the inner cavity of the caliper and to provide shock absorption and buffering, and the protective boss mainly plays a role of waterproofing and dustproofing; the present invention can achieve the functions of two traditional components through one component, which can greatly reduce the investment in mold costs, and at the same time reduce the number and types of parts of the brake caliper assembly.

[0022] The brake caliper assembly disclosed in the present invention increases the self-protection capability of the brake caliper by using the dustproof assembly. At the same time, the anti-rotation mechanism is provided to facilitate the assembly and installation of the dustproof assembly, thereby achieving a good synergistic effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0024] Figure 1 FIG. 1 is a schematic structural diagram of a first embodiment of the present invention.

[0025] Figure 2 FIG. 2 is a schematic structural diagram of a second embodiment of the present invention.

[0026] Figure 3 It is a schematic diagram of the structure when the present invention is used.

[0027] Figure 4 for Figure 3 Schematic diagram of the structure after removing the dustproof assembly.

[0028] The marks in the above figure are:

[0029] 1. Slot assembly; 2. Caliper body; 3. Inner friction plate; 4. Dust cover; 5. Piston; 10. Cover body; 11. Positioning frame; 12. Anti-rotation boss; 13. Anti-rotation groove; 20. Protective boss; 21. Positioning boss, 22. Connecting rib; 23. Shock-absorbing boss; 30. Anti-rotation mechanism; 31. Piston waterproof and dustproof position; 32. Piston dust cover assembly positioning structure; 33. Piston dust cover piston shock-absorbing buffer position. DETAILED DESCRIPTION

[0030] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0031] A dustproof assembly for a brake caliper comprises a dustproof cover 4; the dustproof cover 4 comprises a cover body 10, and a sleeve through hole 101 is provided on the cover body 10; the dustproof assembly disclosed in the present invention is mainly used for waterproofing, dustproofing and shock absorption of brake calipers.

[0032] Specifically, the dustproof assembly disclosed in the present invention mainly includes a dustproof cover 4; the dustproof cover 4 includes a cover body 10, and a sleeve through hole 101 is provided on the cover body 10; the dustproof cover 4 disclosed in the present invention is sleeved on the end of the piston 5 for protection during actual use; the protective cover disclosed in the present invention includes a cover body 10, and the cover body 10 is the main structure of the protective cover. In addition, a sleeve through hole 101 is provided on the cover body 10, and the setting of the sleeve through hole 101 facilitates the sleeve connection of the cover body 10 on the piston 5.

[0033] In addition, in the present invention, the cover body 10 includes a shock-absorbing boss 23; the shock-absorbing boss 23 is connected to the protective boss 20; in the actual production of the present invention, the shock-absorbing boss 23 and the protective boss 20 are integrated into one design; in actual use, in the present invention, the shock-absorbing boss 23 assumes the role of a traditional rectangular sealing ring, which is used to seal the inner cavity of the caliper and to provide shock absorption and buffering, and the protective boss 20 mainly plays a role in waterproofing and dustproofing; the present invention can achieve the functions of two traditional components through one component, which can greatly reduce the investment in mold costs, while reducing the number and types of parts of the brake caliper assembly.

[0034] At the same time, in actual design, it is required that when projected horizontally, the inner side surface of the protective boss 20 is within the horizontal projection of the sleeve through hole 101; the purpose of such design is to ensure the stability of the contact between the protective boss 20 and the piston 5, because in actual assembly, the shock-absorbing boss 23 is equivalent to being assembled on the outside of the piston 5, and the protective boss 20 is to extend into the interior of the piston 5, so the present invention requires the protective boss 20 to extend inwardly, mainly to ensure that the protective boss 20 can be normally inserted into the snap-in groove 1-3 on the outside of the piston 5, thereby ensuring the stability of the connection between the protective boss 20 and the piston 5.

[0035] In addition, in the actual design, the shock-absorbing boss 23 and the protective boss 20 are annular structures, the vertical cross-section of the shock-absorbing boss 23 is rectangular, and at least the outer side surface of the vertical cross-section of the protective boss 20 is arc-shaped; based on the above design, the inner side surface of the shock-absorbing boss 23 is an annular surface, which ensures the contact area between the shock-absorbing boss 23 and the piston 5, facilitates the fitting area with the outer side surface of the piston 5 during subsequent connection, and ensures the stability and tightness of the connection between the shock-absorbing boss 23 and the piston 5; at the same time, through the elasticity of the shock-absorbing boss 23 itself, a certain shock absorption and buffering is achieved.

[0036] Furthermore, in the present invention, the shock-absorbing boss 23 is connected to the protective boss 20 through the connecting rib 22; the basic function of the connecting rib 22 in the present invention is to play a good connecting role, which facilitates the connection between the shock-absorbing boss 23 and the protective boss 20; another function is to play a squeezing and fixing role, because the connecting rib 22 itself is mainly a rubber part, which has a certain elasticity. During the subsequent assembly, the shock-absorbing boss 23 is connected to the piston 5 near the middle area, and the protective boss 20 is arranged in the piston 5 near the end area. After the positions of the two are determined, the connecting rib 22 is in a compressed state due to the initial design reasons. Because of the reaction force of the connecting rib 22 on the shock-absorbing boss 23 and the protective boss 20, the installation and fixation of the shock-absorbing boss 23 and the protective boss 20 on the piston 5 can be better guaranteed.

[0037] In addition, the connecting rib 22 itself has a certain deformation ability, which can reduce the manufacturing accuracy of the shock-absorbing boss 23 and the protective boss 20. Even the shock-absorbing boss 23 and the protective boss 20 with slight deviations can be installed normally on the piston 5 and the caliper body 2, which greatly reduces the production difficulty.

[0038] Furthermore, in the present invention, a positioning boss 21 is provided on the side of the cover body 10; in the present invention, the positioning boss 21 plays a good positioning and limiting role, the purpose of which is to ensure the accuracy of the installation position of the dust cover 4 on the caliper body 2; the positioning boss 21 is a raised ring rib structure, which is mainly arranged on the outer ring of the cover body 10 and is arranged in a raised manner, and is subsequently used to cooperate with the clamping edge groove 1-2 on the caliper body 2 to achieve assembly positioning between the piston 5 and the caliper body 2.

[0039] Furthermore, in the present invention, a positioning frame 11 is provided in the cover body 10; the positioning frame 11 is provided mainly to increase the overall structural strength of the protective cover; it plays a good shaping role and avoids the problem that the protective cover itself is weak and prone to deformation.

[0040] In actual production, the positioning skeleton 11 is required to extend from the shock-absorbing boss 23 to the positioning boss 21; in other words, it is required that the shock-absorbing boss 23 in the cover body 10 and the positioning boss 21 are provided with the positioning skeleton 11. Such a setting is equivalent to increasing the structural strength of the shock-absorbing boss 23 and the positioning boss 21 themselves. Based on such a setting, the stability of the assembly of the protective cover at the end of the caliper body 2 can be better guaranteed, and the problem of the protective cover being offset during subsequent use can be reduced.

[0041] Furthermore, the connecting ribs 22 described in the present invention are distributed in a zigzag manner; the zigzag distribution here mainly means that the connecting ribs 22 are not a straight plate or an inclined plate structure, and the connecting ribs 22 disclosed in the present invention include multiple single ring plates and arc-shaped ring plates; the single ring plates and the arc-shaped ring plates are distributed in sequence and connected in sequence; that is, adjacent single ring plates are connected by arc-shaped ring plates, and adjacent arc-shaped ring plates are connected by single ring plates; and adjacent single ring plates are connected to adjacent single arc-shaped ring plates at only one end, and the other end is connected to another single ring plate or arc-shaped ring plate; then the connecting ribs 22 form a multi-layer plate structure, similar to a spring structure; such a setting can make the connecting ribs 22 not only realize the basic connection function, but also play a good supporting and buffering role, and can also serve as a pressure piece to ensure the stable fit of the shock-absorbing boss 23 and the protective boss 20 on the side of the piston 5.

[0042] In actual arrangement, there are mainly two arrangements of the connecting ribs 22:

[0043] First embodiment:

[0044] It is required that the single ring plate in the connecting rib 22 be arranged in a direction perpendicular to the shock-absorbing boss 23 or in a direction intersecting the shock-absorbing boss 23. Based on such an arrangement, the spring structure formed by the connecting rib 22 is equivalent to being arranged laterally along the axial direction. The beneficial effect of such a design is that the connecting rib 22 can provide lateral extrusion force to the protective boss 20 under the extrusion action of the caliper body 2, thereby better ensuring the interlocking stability of the protective boss 20 on the outer side of the piston 5.

[0045] Second embodiment:

[0046] It is required that the single ring plate in the connecting rib 22 be arranged in a direction parallel to the shock-absorbing boss 23 or in a direction intersecting the shock-absorbing boss 23; based on such a setting, the spring structure formed by the connecting rib 22 is equivalent to being arranged in the axial longitudinal direction. The beneficial effect of such a design is that the connecting rib 22, under the action of the protective boss 20 and the piston 5, can ensure the connection stability between the shock-absorbing boss 23 and the caliper body 2 and the piston 5.

[0047] In addition, in actual design:

[0048] When the first embodiment is adopted, the lower end surface of the protective boss 20 and the connecting rib 22 connected to the protective boss 20 is designed to be a planar structure, and the side of the protective boss 20 close to the piston 5 is designed to be an arc structure; such a setting facilitates the mutual cooperation between the protective boss 20 and the clamping grooves 1-3 opened on the side of the piston 5, thereby reducing interference.

[0049] When the second embodiment is adopted, the end of the connecting rib 22 close to the protective boss 20 is designed to have a V-shaped structure in vertical cross-section, and the protective boss 20 can be designed to have a circular structure in vertical cross-section; such a configuration can allow the flanged protective boss 20 to be assembled on the side of the piston 5, and at the same time, the end of the connecting rib 22 is designed to have a V-shaped structure; the self-deformation of the connecting rib 22 can be better achieved, and through its own elastic deformation, the protective boss 20 can be pressed to ensure the stability of the connection in the sink groove 1-3 on the piston 5, and at the same time, an additional reaction force can be provided for the shock-absorbing boss 23, thereby better ensuring the stability of the shock-absorbing boss 23 embedded in the end of the caliper body 2.

[0050] At the same time, it should be noted that the above-mentioned single ring plate and arc-shaped ring plate are just collectively referred to as improvements. The specific sizes of the single ring plate and arc-shaped ring plate are selected according to actual requirements, and the layout position and layout direction are also selected according to design needs.

[0051] Furthermore, in the present invention, a guide frustum groove 24 is provided at the end of the cover body 10; the guide frustum groove 24 is arranged at the end of the sleeve through hole 101; the guide frustum groove 24 is connected to the sleeve through hole 101; the larger opening end of the guide frustum groove 24 is arranged away from the sleeve through hole 101; the present invention plays a good assembly guiding role through the setting of the guide frustum groove 24, which facilitates the assembly operation of the dust cover 4 on the piston 5.

[0052] Furthermore, in the present invention, the side of the protective boss 20 away from the connecting rib 22 is an arc-shaped surface; in other words, in actual use, the side of the protective boss 20 close to the piston 5 is an arc-shaped surface. This arrangement facilitates the insertion of the protective boss 20 into the snap-in groove 1-3 on the piston 5, thereby facilitating the actual assembly operation.

[0053] A brake caliper assembly comprises a caliper body 2, on which a piston 5 is provided, and on which a dustproof assembly is provided; the dustproof assembly disclosed in the present invention mainly comprises a shock-absorbing boss 23 and a protective boss 20; in the present invention, the shock-absorbing boss 23 assumes the role of a traditional rectangular sealing ring, which is used to seal the inner cavity of the caliper and to provide shock absorption and buffering, and the protective boss 20 mainly plays a role of waterproofing and dustproofing; the present invention can achieve the functions of two traditional components through one component, which can greatly reduce the investment in mold costs, and at the same time reduce the number and types of parts of the brake caliper assembly; and the brake caliper assembly disclosed in the present invention increases the self-protection ability of the brake caliper by using the above-mentioned dustproof assembly; and can effectively improve the service life of the brake caliper assembly.

[0054] Furthermore, in the present invention, the piston 5 is connected to the caliper body 2 through an anti-rotation mechanism 30, and the anti-rotation mechanism 30 includes an anti-rotation groove 13 arranged on the caliper body 2, and the piston 5 is provided with an anti-rotation boss 12; the anti-rotation boss 12 on the piston 5 is clamped in the anti-rotation groove 13 in the caliper body 2; in other words, the present invention adds a protrusion to the outside of the piston 5 and a groove on the inside of the caliper body 2, and through the cooperation of the protrusion and the groove, the piston 5 and the caliper body 2 have axial movement ability but lose relative rotation ability. Based on such a design, the present invention can well ensure the linkage of the axial rotation of the piston 5 and the caliper body 2. When the dust cover 4 is assembled, the accuracy of the relative position of the piston 5 to the caliper body 2 can be ensured, and then the accuracy of the assembly position of the dust cover 4 can be guaranteed to a certain extent.

[0055] Furthermore, in the present invention, a slot assembly 1 for installing a dustproof assembly is provided on the piston 5 and the caliper body 2; the present invention facilitates the installation and positioning of the dust cover 4 through the provision of the slot assembly 1. Specifically, the slot assembly 1 disclosed in the present invention mainly includes an installation sink 1-1 provided at the end of the caliper body 2; the installation sink 1-1 forms a storage space at the end of the caliper body 2, which facilitates the subsequent installation of the dustproof assembly. In addition, in the present invention, a clamping side groove 1-2 is provided on the inner wall of the installation sink 1-1; the clamping side groove 1-2 is mainly used to engage with the positioning protrusion in the dustproof assembly. They cooperate with each other to realize the assembly and positioning of the dustproof assembly on the inner wall of the caliper body 2. In addition, the piston 5 in the present invention is provided with a snap-in groove 1-3 that cooperates with the protective boss 20; the setting of the snap-in groove 1-3 is mainly used to cooperate with the protective boss 20 to realize the connection between the protective boss 20 and the piston 5; based on the setting of the above-mentioned groove assembly 1, the dustproof assembly, the caliper body 2 and the piston 5 form a labyrinth-like sealing structure, which not only enables the components to have mutual positioning and calibration functions, but also can realize multiple seals between the dustproof assembly and the components, and has an excellent use effect.

[0056] The specific embodiments are as follows:

[0057] The dustproof assembly disclosed in the present invention mainly includes a dustproof cover 4; the dustproof cover 4 includes a cover body 10, and the cover body 10 is provided with a sleeve through hole 101; in the present invention, the cover body 10 includes a positioning skeleton 11, a protective boss 20 and a shock-absorbing boss 23, and each boss is connected by a connecting rib 22.

[0058] When the piston 5 is assembled into the caliper body 2, the dust cover 4 is assembled into the mounting groove 1-1 at the end of the caliper body 2; the shock-absorbing boss 23, the mounting groove 1-1 and the caliper body 2 form a dust cover piston shock-absorbing buffer position 33; in addition, in actual design, the dust cover 4 cooperates with the clamping edge groove 1-2 through the positioning boss 21; then the installation and positioning of the dust cover 4 and the caliper body 2 are realized; the positioning boss 21 and the clamping edge groove 1-2 form a piston dust cover positioning structure 32, and the positioning convex strip and the clamping edge groove 1-2 are interference fit, thereby realizing the interference fit of the dust cover 4 to the caliper body 2. In addition, in the present invention, the protective boss 20 in the dust cover 4 plays a waterproof and dustproof role by interference fit with the clamping groove 1-3; the protective boss 20 and the clamping groove 1-3 form a piston waterproof and dustproof position 31.

[0059] When the inner friction plate 3 is subjected to the tangential force, the piston 5 is driven to move radially, generating a radial impact, and the shock-absorbing boss 23 at the shock-absorbing buffer position 33 of the dust cover plays a role in reducing the impact.

[0060] In the present invention, the dustproof assembly disclosed in the present invention mainly includes a shock-absorbing boss 23 and a protective boss 20; in the present invention, the shock-absorbing boss 23 assumes the role of a traditional rectangular sealing ring, which is used to seal the inner cavity of the caliper and has a shock-absorbing and buffering effect, and the protective boss 20 mainly plays a waterproof and dustproof role; the present invention can achieve the functions of two traditional components through one component, which can greatly reduce the investment in mold costs, and at the same time reduce the number and types of parts of the brake caliper assembly.

[0061] The present invention is equivalent to combining the traditional rectangular sealing ring and the dust cover 4 into one component; it can reduce the number of mold inputs, while reducing the number of parts of the caliper assembly, and then reducing the overall assembly process of the caliper assembly; it can achieve the purpose of reducing costs and improving the efficiency of caliper assembly.

[0062] In other words, the dustproof assembly disclosed in the present invention mainly combines two components into one component, thereby reducing the number of parts and reducing the process steps; at the same time, the dustproof assembly disclosed in the present invention can not only reduce shock, seal, but also be waterproof and dustproof; at the same time, the caliper assembly disclosed in the present invention is designed with an anti-rotation mechanism 30, and when the piston 5 and the caliper body 2 are provided with the anti-rotation mechanism 30, the caliper assembly disclosed in the present invention can solve the assembly and positioning problems of components.

[0063] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A dustproof assembly for a brake caliper, characterized in that: It includes a dust cover; the dust cover includes a cover body, and the cover body is provided with a sleeve through hole; The cover body includes a shock-absorbing boss; the shock-absorbing boss is connected to a protective boss.

2. A dustproof assembly for a brake caliper according to claim 1, characterized in that: The shock-absorbing boss is connected to the protective boss via a connecting rib.

3. The dustproof assembly for a brake caliper according to claim 1, characterized in that: A positioning boss is provided on the side of the cover body.

4. The dustproof assembly for a brake caliper according to claim 1, characterized in that: A positioning frame is arranged in the cover body.

5. The dustproof assembly for a brake caliper according to claim 1, characterized in that: The connecting ribs are distributed in a meandering manner.

6. The dustproof assembly for a brake caliper according to claim 1, characterized in that: A guide frustum groove is provided at the end of the cover body; the guide frustum groove is arranged at the end of the sleeve through hole; the guide frustum groove is connected to the sleeve through hole; and the larger end of the guide frustum groove opening is arranged away from the sleeve through hole.

7. The dustproof assembly for a brake caliper according to claim 1, characterized in that: The side of the protective boss away from the connecting rib is an arc-shaped surface.

8. A brake caliper assembly, characterized in that: It comprises a caliper body, on which a piston is arranged, and on which a dustproof assembly as claimed in any one of claims 1 to 9 is arranged.

9. A brake caliper assembly according to claim 8, characterized in that: The piston is connected to the caliper body through an anti-rotation mechanism, and the anti-rotation mechanism includes an anti-rotation groove arranged on the caliper body. The piston is provided with an anti-rotation boss; the anti-rotation boss on the piston is clamped in the anti-rotation groove in the caliper body.

10. The brake caliper assembly according to claim 8, characterized in that: The piston and the caliper body are provided with a slot assembly for installing a dustproof assembly; the slot assembly includes a mounting recessed slot arranged at the end of the caliper body; a clamping edge slot is provided on the inner wall of the mounting recessed slot; and the piston is provided with a clamping recessed slot matching the protective boss.

Images