A strong adjustment oil pressure disc brake
Patent Information
- Application Number
- CN202522575643.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-04
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-12-04
AI Technical Summary
[0005]有鉴于此，本实用新型所要解决的技术问题是提供了一种调节性强的油压碟刹器，通过轴向调节机构、快速拆装与径向微调机构以及优化散热，解决现有碟刹器调节性差、拆装不便和散热不足的问题
通过轴向调节机构的内六角螺丝可便捷调节制动开口宽度，补偿摩擦片磨损间隙，操作简单；快速拆装与径向微调机构的腰圆安装孔配合不同厚度的调节垫片，实现碟刹器径向位置的精准微调，满足安装定位需求。
Smart Images
Figure CN224903828U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of disc brake technology, specifically, it relates to a highly adjustable hydraulic disc brake. Background Technology
[0002] Disc brakes, with their advantages of rapid braking response, stable braking force, and less susceptibility to adverse weather conditions, have widely replaced traditional drum brakes and become the mainstream braking component for various vehicles. Current hydraulic disc brakes typically consist of core components such as a caliper, piston, brake friction pads, and brake discs. They achieve braking by using hydraulic pressure to drive the piston, which pushes the friction pads against the brake disc to generate friction.
[0003] However, existing hydraulic disc brakes still have many shortcomings in actual use: First, the brake clearance adjustment is inconvenient. As the friction pads wear, the brake clearance gradually increases, leading to longer braking stroke and reduced braking force. The clearance adjustment of traditional disc brakes often requires professional tools and technicians, which is difficult for ordinary users to do themselves. Second, the disassembly and positioning accuracy is low. During installation or maintenance, it is difficult to quickly and accurately position the disc brake with the mounting base, and radial position fine adjustment is inconvenient, which can easily lead to installation deviations, resulting in abnormal braking noise or uneven braking effect. Third, the heat dissipation performance needs to be improved. During braking, the friction pads and brake discs rub intensely together, generating a lot of heat. If the heat cannot be dissipated in time, it can lead to problems such as friction pad thermal fade and brake disc deformation, seriously affecting braking safety. Fourth, the assembly stability of the friction pads is insufficient. The friction pads of some disc brakes are prone to loosening or shifting during braking, reducing braking reliability.
[0004] To address the aforementioned issues, there is an urgent need to develop a disc brake that is highly adjustable, easy to install and disassemble, has excellent heat dissipation performance, and is structurally stable, in order to meet the diverse needs of practical use and improve the safety and practicality of the braking system. Utility Model Content
[0005] In view of this, the technical problem to be solved by this utility model is to provide a highly adjustable hydraulic disc brake, which solves the problems of poor adjustability, inconvenient disassembly and assembly, and insufficient heat dissipation of existing disc brakes by means of an axial adjustment mechanism, a quick disassembly and assembly and radial fine adjustment mechanism, and optimized heat dissipation.
[0006] To solve the above-mentioned technical problems, this utility model discloses a highly adjustable hydraulic disc brake, comprising: The hydraulic disc brake body includes a main caliper body and a secondary caliper body that are detachably connected by bolts. The main caliper body and the secondary caliper body are arranged opposite to each other and a brake opening for accommodating the brake disc is formed between them. The main caliper body has an oil inlet, which is connected to the mounting cavity inside the main caliper body. A piston assembly is fitted into the mounting cavity. The piston assembly is fixedly mounted with the main brake friction pad facing the outer end of the brake opening, and the main brake friction pad is completely located in the inner area of the brake opening. An adjustable friction pad assembly is installed on the secondary caliper body at the position corresponding to the main brake friction pad. The adjustable friction pad assembly is arranged opposite to the main brake friction pad. The lower ends of the main brake friction pad and the adjustable friction pad assembly are elastically connected by a leaf spring, and the main brake friction pad, the adjustable friction pad assembly and the leaf spring are positioned by the same positioning cotter pin; the end of the positioning cotter pin is provided with an anti-disengagement snap ring.
[0007] An axial adjustment mechanism is provided between the adjustable friction pad assembly and the sub-clamp body. This axial adjustment mechanism is used to manually adjust the width of the brake opening. The main or auxiliary clamp body is also equipped with a quick-release and radial fine-adjustment mechanism, which includes: A pre-tightening seat is fixed to the outer wall of the main clamp body or the auxiliary clamp body, and its extended end is provided with an oval mounting hole.
[0008] Furthermore, the axial adjustment mechanism includes an internal hex screw, which is threaded through the sub-clamp body in a direction parallel to the movement direction of the piston assembly. The end of the internal hex screw facing the adjustable friction plate assembly forms a mating engagement with the back of the assembly. By rotating the internal hex screw, the adjustable friction plate assembly can be driven to move in an axial direction perpendicular to the brake disc.
[0009] Furthermore, the major axis of the oval mounting hole in the quick-release and radial fine-tuning mechanism is aligned with the radial direction of the brake disc; the mechanism also includes: Pre-tightening bolt, which is adapted to be inserted into the oval mounting hole, with its thread section fitted with an elastic washer and an adjusting shim. The adjusting shim is made of stainless steel and has different thickness specifications. A locking nut, which is threadedly engaged with the preload bolt, is used to fix the preload seat to the mounting base. A locking washer is provided between the locking nut and the preload seat.
[0010] Furthermore, both the main clamp and the auxiliary clamp have integrally formed heat dissipation fins on their outer surfaces, which are spaced apart along the length of the clamp to increase the heat dissipation area of the clamp.
[0011] Furthermore, both the back plate of the main brake friction pad and the back plate of the auxiliary brake friction pad in the adjustable friction pad assembly are made of metal, and both back plates have several outwardly radiating heat dissipation fins extending integrally from their outer edges, with the heat dissipation fins evenly distributed along the circumference of the back plates.
[0012] Furthermore, the main caliper and the auxiliary caliper are provided with pneumatic guide grooves on the windward side of the corresponding brake opening. The opening of the pneumatic guide groove faces the windward direction of the disc brake's movement, and the bottom of the groove extends to the edge of the brake opening to guide the cooling airflow across the surface of the brake disc.
[0013] Furthermore, the adjustable friction plate assembly is floatingly connected to the sub-clamp body via at least two hex socket head cap screws. The screw portion of the hex socket head cap screws forms a clearance fit with the guide hole on the adjustable friction plate assembly, providing axial movement guidance for the adjustable friction plate assembly and allowing it to float in the adjustment direction.
[0014] Compared with the prior art, the present invention can achieve the following technical effects: The brake opening width can be easily adjusted using the internal hex screw of the axial adjustment mechanism to compensate for the wear gap of the friction pads, and the operation is simple. The quick disassembly and assembly mechanism, along with the oval mounting holes of the radial fine adjustment mechanism and the adjustment shims of different thicknesses, can achieve precise fine adjustment of the radial position of the disc brake to meet the installation and positioning requirements.
[0015] The combination of pre-tightening bolts and lock nuts enables quick installation and removal of disc brakes. The setting of locking washers and elastic washers ensures structural stability after installation and effectively prevents loosening. The bolt connection structure of the main and auxiliary caliper bodies also facilitates the maintenance and replacement of internal components.
[0016] The caliper's heat dissipation fins, the radial heat dissipation wings on the friction pad backplate, and the aerodynamic guide grooves form a multi-layer heat dissipation structure. By increasing the heat dissipation area, enhancing heat conduction, and guiding airflow for active cooling, the heat generated during braking is efficiently dissipated, heat fade is delayed, and braking safety is improved.
[0017] The leaf spring's elastic connection to the two friction pads, along with the positioning cotter pin and anti-disengagement snap ring, ensures that the friction pads are not easily loosened or shifted during braking. The floating connection structure of the adjustable friction pad assembly ensures a smooth and stable adjustment process, improving overall braking reliability. Of course, any product implementing this utility model does not necessarily need to achieve all of the above-mentioned technical effects at the same time. Attached Figure Description
[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a perspective view of a highly adjustable hydraulic disc brake according to an embodiment of the present invention; Figure 2 This is a partial diagram of a highly adjustable hydraulic disc brake according to an embodiment of this utility model; Figure 3This is a schematic diagram showing the connection between the main brake friction pad and the adjustable friction pad assembly in an embodiment of this utility model.
[0019] Figure label: Main clamp body 11, auxiliary clamp body 12, brake opening 13, oil inlet 20, mounting cavity 21, main brake friction pad 30, adjustable friction pad assembly 40, leaf spring 50, positioning cotter pin 60, axial adjustment mechanism 70, quick disassembly and radial fine adjustment mechanism 80, preload seat 81, oval mounting hole 82, heat dissipation fins 90, pneumatic guide groove 100. Detailed Implementation
[0020] The following will describe in detail the implementation of this utility model with reference to the accompanying drawings and embodiments, so that the implementation of this utility model can be fully understood and carried out based on how technical means are used to solve technical problems and achieve technical effects.
[0021] Please refer to Figures 1 to 3 , Figure 1 This is a perspective view of a highly adjustable hydraulic disc brake according to an embodiment of the present invention; Figure 2 This is a partial diagram of a highly adjustable hydraulic disc brake according to an embodiment of this utility model; Figure 3 This is a schematic diagram showing the connection between the main brake friction pad and the adjustable friction pad assembly in an embodiment of this utility model.
[0022] As shown in the figure, this embodiment provides a highly adjustable hydraulic disc brake, including a hydraulic disc brake body. The hydraulic disc brake body is composed of a main caliper 11 and a secondary caliper 12. The main caliper 11 and the secondary caliper 12 are detachably connected by two M6 hexagon socket head cap screws. The two are arranged opposite each other, forming a brake opening 13 in the middle for accommodating the brake disc. The initial width of the brake opening 13 is slightly larger than the thickness of the brake disc 2, ensuring that the brake disc 2 can rotate freely without contacting the friction pad.
[0023] The upper part of the main caliper body 11 has an oil inlet 20 with internal threads for connecting hydraulic pipe connectors. The lower part of the oil inlet 20 is connected to a mounting cavity 21 inside the main caliper body 11. The mounting cavity 21 is a cylindrical cavity with its axis perpendicular to the surface of the brake disc. A piston assembly is fitted into the mounting cavity 21. The piston assembly includes a piston and a sealing ring. The sealing ring is fitted onto the outer wall of the piston and forms a sealing fit with the inner wall of the mounting cavity 21. The piston can reciprocate along the axis of the mounting cavity 21. The piston 41 is fixed to the outer end of the brake opening 13 with a countersunk bolt and fitted with a main brake friction pad 30. The main brake friction pad 30 is made of a friction layer and a metal backing plate bonded together. The size of the metal backing plate matches the end face of the piston. The main brake friction pad 30 is located entirely inside the brake opening 13, with its friction layer facing the brake disc.
[0024] An adjustable friction pad assembly 40 is mounted on the secondary caliper body 12 at a position corresponding to the main brake friction pad 30. The adjustable friction pad assembly 40 includes a secondary brake friction pad and a mounting base. The secondary brake friction pad has the same structure as the main brake friction pad 30, also consisting of a friction layer and a metal backing plate. Its friction layer faces the brake disc and is arranged opposite to the main brake friction pad 30. The mounting base has a U-shaped structure, and the metal backing plate of the secondary brake friction pad is fixed to the inside of the mounting base by bolts. An axial adjustment mechanism 70 is provided between the adjustable friction pad assembly 40 and the secondary caliper body 12. The axial adjustment mechanism 70 includes an M8 hex socket screw. A threaded hole is provided on the secondary caliper body 12 at the position corresponding to the mounting seat. The hex socket screw passes through the threaded hole along the direction of movement of the piston assembly, and its end abuts against the center position of the back of the mounting seat. By rotating the hex socket screw clockwise, the mounting seat can be pushed to move the secondary brake friction pad towards the brake disc, reducing the brake clearance. By rotating it counterclockwise, under the elastic action of the leaf spring 50, the mounting seat moves the secondary brake friction pad in the opposite direction, increasing the brake clearance.
[0025] Preferably, the adjustable friction plate assembly 40 is floatingly connected to the sub-clamp body 12 by two M5 hex socket head cap screws. The screw portion of the hex socket head cap screws forms a 0.5mm clearance fit with the guide hole opened on the mounting base, which provides guidance for the axial movement of the adjustable friction plate assembly 40, ensuring its movement direction is accurate and avoiding offset and jamming.
[0026] The lower ends of the main brake friction pad 30 and the adjustable friction pad assembly 40 are elastically connected by a steel leaf spring 50. Positioning holes are provided at both ends of the leaf spring 50. Positioning holes of the same diameter are also provided at corresponding positions on the metal back plate of the main brake friction pad 30 and the mounting base of the adjustable friction pad assembly 40. A φ4 positioning cotter pin 60 passes sequentially through the positioning holes at one end of the leaf spring 50, the main brake friction pad 30, the adjustable friction pad assembly 40, and the other end of the leaf spring 50, achieving through-and-through positioning. It can also pass through the body of the hydraulic disc brake for further limiting. An anti-disengagement spring is engaged at the end of the positioning cotter pin 60. The anti-disengagement spring has a circular ring at one end and an outwardly flared opening at the other end, effectively preventing the positioning cotter pin 60 from loosening. The elastic tension of the leaf spring 50 keeps the main brake friction pad 30 and the auxiliary brake friction pad tending to converge towards the center.
[0027] The outer wall of the main clamp body 11 is fixed with a quick-release and radial fine-tuning mechanism 80. This mechanism includes a preload seat 81, which is a straight or L-shaped metal plate. Its horizontal section is fixed to the outer wall of the main clamp body 11 by welding or integral molding. When it is L-shaped, the vertical section extends to the outside of the main clamp body 11. The extended end has an oval mounting hole 82. The long axis of the oval mounting hole 82 is consistent with the radial direction of the brake disc 2. The long axis length is 20mm and the short axis length is 8mm. The quick-release and radial fine-tuning mechanism 80 also includes an M10 preload bolt and a lock nut. The preload bolt is fitted into the oval mounting hole 82. Its screw section is fitted with an elastic washer and an adjusting shim from bottom to top. The adjusting shim is made of 304 stainless steel and has three thicknesses: 0.5mm, 1mm, and 2mm, which can be combined according to installation requirements. The locking nut and the preload bolt are threaded together to fix the preload seat 81 to the mounting base of the bicycle. A locking washer is provided between the locking nut and the preload seat 81. The locking washer is a toothed washer, and its toothed surface is in contact with the preload seat 81 and the locking nut respectively to prevent the locking nut from loosening.
[0028] To improve heat dissipation performance, heat dissipation fins 90 are integrally formed on the outer surfaces of the main clamp body 11 and the auxiliary clamp body 12. The heat dissipation fins 90 are rectangular sheet structures with a thickness of 2mm and a height of 8mm, and are evenly distributed at 5mm intervals along the length of the clamp body.
[0029] Preferably, the main clamp body 11 and the auxiliary clamp body 12 are each provided with 8 heat dissipation fins 90, which significantly increases the heat dissipation area of the clamp body. The metal back plate of the main brake friction pad 30 and the metal back plate of the auxiliary brake friction pad in the adjustable friction pad assembly 40 are integrally extended with 6 outwardly radiating heat dissipation fins. The heat dissipation fins are triangular plate-shaped structures with a thickness of 1.5 mm and a length of 10 mm, and are evenly distributed along the circumference of the back plate, which can quickly transfer the heat generated by the friction layer away.
[0030] In addition, the main caliper body 11 and the auxiliary caliper body 12 are provided with pneumatic guide grooves 100 on the windward side of the corresponding brake opening 13 (i.e., the direction of airflow when the disc brake is working). The pneumatic guide groove 100 is a V-shaped groove with a groove width of 15mm and a depth of 5mm. The groove opening faces the windward direction of the disc brake movement, and the bottom of the groove extends to the edge of the brake opening 13. When the vehicle is moving, the airflow can be guided along the pneumatic guide groove 100 into the brake opening 13 and flow over the surface of the brake disc to achieve active cooling of the brake disc.
[0031] In this embodiment, when installing the disc brake, first, the preload bolt is inserted into the oval mounting hole 82 of the preload seat 81. According to the position of the mounting base, the radial position of the disc brake is adjusted through the long axis direction of the oval mounting hole 82 so that the brake disc is accurately located in the center of the brake opening 13. Then, an adjusting shim of appropriate thickness is selected and fitted onto the preload bolt. The preload bolt is then passed through the mounting hole of the mounting base. The elastic washer and the lock nut are installed in sequence, and the lock nut is tightened. The locking washer is used to prevent loosening, thus completing the quick installation and radial positioning.
[0032] During braking, hydraulic pressure enters the mounting cavity 21 through the oil inlet 20, pushing the piston towards the brake disc. This causes the main brake friction pad 30 to contact one side of the brake disc, working in conjunction with the auxiliary brake friction pad. Together, they clamp the brake disc, generating braking friction. When wear on the friction pads causes an increase in brake clearance, simply use an Allen wrench to rotate the Allen screw of the axial adjustment mechanism 70, pushing the adjustable friction pad assembly 40 towards the brake disc until the brake clearance is restored to the appropriate size. The operation is convenient.
[0033] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.
Claims
1. A highly adjustable hydraulic disc brake, comprising a hydraulic disc brake body, the hydraulic disc brake body including a main caliper body and a secondary caliper body detachably connected by bolts, the main caliper body and the secondary caliper body being disposed opposite to each other and forming a brake opening between them for accommodating a brake disc; characterized in that: The main caliper body is provided with an oil inlet, which is connected to an installation cavity inside the main caliper body. A piston assembly is fitted into the installation cavity. The piston assembly is fixedly fitted with a main brake friction pad facing the outer end of the brake opening, and the main brake friction pad is completely located in the inner area of the brake opening. An adjustable friction pad assembly is installed on the secondary caliper body at a position corresponding to the main brake friction pad, and the adjustable friction pad assembly is arranged opposite to the main brake friction pad. The lower ends of the main brake friction pad and the adjustable friction pad assembly are elastically connected by a leaf spring, and the main brake friction pad, the adjustable friction pad assembly and the leaf spring are positioned by the same positioning cotter pin, and the end of the positioning cotter pin is provided with an anti-disengagement snap ring. An axial adjustment mechanism is provided between the adjustable friction pad assembly and the sub-clamp body. This axial adjustment mechanism is used to manually adjust the width of the brake opening. The main clamp or auxiliary clamp is also equipped with a quick-release and radial fine-tuning mechanism, which includes: A pre-tightening seat is fixed to the outer wall of the main clamp body or the auxiliary clamp body, and its extended end is provided with an oval mounting hole.
2. The highly adjustable hydraulic disc brake according to claim 1, characterized in that, The axial adjustment mechanism includes an internal hex screw, which is threaded through the sub-clamp body in a direction parallel to the piston assembly's movement direction. The end of the internal hex screw facing the adjustable friction plate assembly forms a mating engagement with the back of the assembly. By rotating the internal hex screw, the adjustable friction plate assembly can be driven to move in an axial direction perpendicular to the brake disc.
3. A highly adjustable hydraulic disc brake according to claim 1, characterized in that, The long axis of the oblong mounting hole in the quick-release and radial fine-tuning mechanism is aligned with the radial direction of the brake disc; the mechanism also includes: Pre-tightening bolt, which is adapted to be inserted into the oval mounting hole, with its thread section fitted with an elastic washer and an adjusting shim. The adjusting shim is made of stainless steel and has different thickness specifications. A locking nut, which is threadedly engaged with the preload bolt, is used to fix the preload seat to the mounting base. A locking washer is provided between the locking nut and the preload seat.
4. A highly adjustable hydraulic disc brake according to claim 1, characterized in that, The outer surfaces of both the main clamp and the auxiliary clamp are integrally formed with heat dissipation fins, which are spaced apart along the length of the clamp to increase the heat dissipation area of the clamp.
5. A highly adjustable hydraulic disc brake according to claim 1, characterized in that, The back plate of the main brake friction pad and the back plate of the auxiliary brake friction pad in the adjustable friction pad assembly are both made of metal, and the outer edges of both back plates are integrally extended with several outwardly radiating heat dissipation fins, which are evenly distributed along the circumference of the back plate.
6. A highly adjustable hydraulic disc brake according to claim 1, characterized in that, The main caliper and the auxiliary caliper are provided with pneumatic guide grooves on the windward side of the corresponding brake opening. The opening of the pneumatic guide groove faces the windward direction of the disc brake movement, and the bottom of the groove extends to the edge of the brake opening to guide the cooling airflow across the surface of the brake disc.
7. A highly adjustable hydraulic disc brake according to claim 2, characterized in that, The adjustable friction plate assembly is floatingly connected to the sub-clamp body by at least two hexagon socket bolts. The screw portion of the hexagon socket bolts forms a clearance fit with the guide hole on the adjustable friction plate assembly, providing axial movement guidance for the adjustable friction plate assembly and allowing it to float in the adjustment direction.