Connecting structure of calipers and brake pad supporting pin and calipers

Abstract

The utility model provides a connecting structure of a caliper and a brake pad supporting pin and the caliper, and the connecting structure comprises the caliper which is provided with a mounting cavity; the brake pad supporting pin is arranged in the mounting cavity; wherein the caliper is provided with a plurality of installation point positions, the installation point positions are independently arranged on the two opposite end faces of the caliper, each installation point position comprises a threaded installation hole and a supporting pin, the threaded installation holes and the supporting pins are matched, and the supporting pins penetrate through the installation holes in a threaded mode so that the brake pad supporting pins can be fixed to the caliper. The brake pad supporting pin solves the technical problem that in the prior art, the brake pad supporting pin and the calipers are complex to assemble.

Description

Technical Field

[0001] This utility model relates to the field of brake caliper technology, and in particular to a connection structure between a caliper and a brake pad support pin, and a caliper. Background Technology

[0002] Traditionally, the support pin is pulled back to the inside of the caliper via a step. This requires machining a countersunk surface on the inner side of the blank to ensure the pin and caliper are properly aligned and perpendicular. This method requires using a corner cutter or hook cutter to machine the countersunk surface on the inside of the caliper, which is complex and involves high costs and requires expensive tools. Figure 5 ). Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a connection structure for a caliper and a brake pad support pin, as well as a caliper, which solves the technical problem of complex assembly of the brake pad support pin and the caliper in existing technologies.

[0004] As in the embodiments of this utility model, the technical solution adopted by this utility model is as follows:

[0005] Caliper with mounting cavity;

[0006] Brake pad support pins are provided within the mounting cavity;

[0007] The caliper has multiple mounting points, which are independently located on opposite end faces of the caliper. Each mounting point includes a mating threaded mounting hole and a brake pad support pin. The threaded mounting hole is connected to the mounting cavity, and the brake pad support pin is threaded through the threaded mounting hole to fix the brake pad support pin to the caliper.

[0008] Preferably, the brake pad support pin is provided with a support boss, and the inner wall of the threaded mounting hole is formed with a countersunk platform for abutting against the support boss.

[0009] Preferably, the support boss is provided with an internal spline countersunk hole.

[0010] Preferably, the brake pad support pin is provided with connecting threads.

[0011] Preferably, the brake pad support pin includes a threaded section and a smooth section connected in sequence, the connecting thread is provided on the threaded section, and the diameter of the threaded section is larger than the diameter of the smooth section.

[0012] Preferably, the gap between the brake pad support pin and the inner wall of the threaded mounting hole is 0.05-0.2mm.

[0013] Preferably, an anti-loosening adhesive layer is provided between the brake pad support pin and the inner wall of the threaded mounting hole.

[0014] Preferably, the diameter of the mounting hole gradually increases from the direction closest to the mounting cavity to the direction furthest away from the mounting cavity.

[0015] This embodiment also provides a caliper, including the connection structure between the caliper and the brake pad support pin described above.

[0016] Compared with the existing technology, this utility model has the following beneficial effects: the support countersink of the brake pad support pin mounting hole on the caliper has been changed from the original two-end mounting countersink to only the outer countersink, thereby reducing the number of two corner cutters that are machined from the inside of the caliper, saving 200,000 yuan in costs; in addition, due to the reduction of the machining of the inner countersink, the production cycle can be increased from the original 150 seconds / piece to 130 seconds / piece, and the machining capacity can be increased by 13%. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the caliper structure in one embodiment of the present invention;

[0018] Figure 2 This is a front view of the caliper in one embodiment of the present invention;

[0019] Figure 3 for Figure 2 Sectional view of AA;

[0020] Figure 4 for Figure 3 A cross-sectional view of GG;

[0021] Figure 5 This is a schematic diagram of the connection between a traditional support pin and a caliper.

[0022] In the above attached figures: 1. Caliper; 2. Mounting cavity; 3. Brake pad; 4. Threaded mounting hole; 41. Countersunk plate; 5. Brake pad support pin; 51. Support boss; 52. Internal spline countersunk hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the technical solutions of this utility model are further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it.

[0024] See Figures 1 to 5 This utility model provides a connection structure between a caliper 1 and a brake pad support pin 5, comprising:

[0025] Caliper 1 has a mounting cavity 2;

[0026] Brake pad support pin 5 is disposed in the mounting cavity 2;

[0027] The caliper 1 has multiple mounting points, which are independently located on opposite end faces of the caliper 1. Each mounting point includes a mating threaded mounting hole 4 and a brake pad support pin 5. The threaded mounting hole 4 is connected to the mounting cavity 2, and the brake pad support pin 5 is threaded through the threaded mounting hole 4 to fix the brake pad 3 to the caliper 1.

[0028] In this embodiment, the caliper 1 has multiple independent mounting points on both ends. Each mounting point consists of a threaded mounting hole 4 and a brake pad support pin 5. The brake pad support pin 5 has external threads, and the threaded mounting hole 4 has a matching internal thread. The brake pad support pin 5 is screwed into the threaded mounting hole 4 to form a rigid connection. At the same time, the threaded mounting hole 4 communicates with the mounting cavity 2 where the brake pad 3 is located, ensuring direct clamping and fixing. The mounting points are distributed on opposite ends of the caliper 1 to balance the force on the brake pad 3 and reduce uneven wear caused by vibration. Compared with the existing brake pad support pin 5 mounting method, the mounting hole 4 has its own internal thread, which directly connects and tightens with the brake pad support pin 5, reducing one bolt component (such as...). Figure 5 (As shown).

[0029] The brake pad support pin 5 is provided with a support boss 51, and the inner wall of the threaded mounting hole 4 is formed with a countersunk platform 41 for abutting against the support boss 51.

[0030] In this embodiment, a support boss 51 is designed on the brake pad support pin 5. The function of the support boss 51 is to increase the contact area between the support pin 5 and the mounting hole 4, thereby dispersing pressure, reducing the pressure per unit area, and avoiding wear or damage caused by excessive local pressure. A countersunk platform 41 is provided on the inner wall of the threaded mounting hole 4. The position and size of the countersunk platform 41 match the support boss 51 on the brake pad support pin 5, so that when the brake pad support pin 5 is threaded through the mounting hole 4, the support boss 51 can abut against the countersunk platform 41, which helps to fix the brake pad 3 more securely. It can also reduce vibration and noise through precise mechanical fit. To improve stability and durability, the support boss 51 and the countersunk plate 41 in the threaded mounting hole 4 form an axial abutment, limiting the screw-in depth of the brake pad support pin 5 and preventing over-tightening that could cause deformation of the brake pad 3 or damage to the threads. Compared with the existing brake pad support pin 5 installation method, the threaded mounting hole 4 of the brake pad support pin 5 of the caliper 1 is changed from countersunk plates 41 at both ends to only the outer countersunk plate 41, thereby reducing the number of two corner cutting heads that need to be machined from the inside of the caliper 1 during machining, saving 200,000 yuan. In addition, due to the reduction in the machining of the inner countersunk plate 41, the production cycle can be increased from 150 seconds / piece to 130 seconds / piece, and the machining capacity can be increased by 13%.

[0031] The brake pad support pin 5 has an internal spline countersunk hole at its end.

[0032] In this embodiment, an internal spline countersunk hole is provided at the end of the brake pad support pin 5, which facilitates the tightening or disassembly of the brake pad support pin 5. An internal hex wrench can be used to quickly and securely screw the brake pad support pin 5 into or out of the mounting hole 4, enhancing connection reliability. Since the support boss 51 and the countersunk plate 41 are in close contact, and precise torque control can be achieved through the internal hex wrench structure, the brake pad 3 is securely clamped, which can be used for thread tightening and also reduces the overall product weight. Simultaneously, a chamfer structure can be provided on the support boss 51, surrounding the internal spline countersunk hole 52. The chamfer structure is located on the surface of the support boss 51, surrounding the edge of the internal spline countersunk hole 52. The chamfer structure has a guiding function; when an internal hex wrench is inserted into the hexagonal countersunk hole, the chamfer acts as a guide, reducing assembly errors and operational difficulty. When metal parts are under stress, sharp corners are prone to stress concentration, leading to fatigue cracking. By providing a chamfer structure, this problem can be effectively alleviated, improving the strength and durability of the brake pad support pin 5.

[0033] The brake pad support pin 5 is provided with connecting threads.

[0034] In this embodiment, the brake pad support pin 5 is connected to the caliper body via its own connecting thread (not shown), reducing the number of bolt parts.

[0035] The brake pad support pin 5 includes a threaded section and a smooth section connected in sequence. The connecting thread is provided on the threaded section, and the diameter of the threaded section is larger than the diameter of the smooth section.

[0036] In this embodiment, the brake pad support pin 5 includes a threaded section and a smooth section connected in sequence. The connecting thread is provided on the threaded section, and the diameter of the threaded section is slightly larger than the diameter of the smooth section. This ensures good contact between the support shaft and the caliper hole, minimizes deformation and prevents loosening when subjected to braking force, and prioritizes ensuring the fit clearance between the smooth section and the threaded mounting hole.

[0037] The gap between the brake pad support pin 5 and the inner wall of the threaded mounting hole 4 is 0.05-0.2mm.

[0038] In this embodiment, the brake pad support pin 5 and the threaded mounting hole 4 are fitted with a small clearance, while the internal and external threads are fitted with a large clearance. This ensures that the support pin 5 can be easily installed and accurately positioned, while also withstanding a large load. During braking, the caliper 1 and the support pin 5 experience different amounts of thermal expansion due to material differences (typically, the caliper 1 is made of cast iron, and the support pin 5 is made of alloy steel). This clearance range allows for radial thermal deformation, preventing high-temperature jamming.

[0039] An anti-loosening adhesive layer is provided between the brake pad support pin 5 and the inner wall of the threaded mounting hole 4.

[0040] In this embodiment, the loosening adhesive layer is disposed between the outer surface of the brake pad support pin 5 and the inner wall of the threaded mounting hole 4 to enhance the connection stability between the two. During vehicle operation, the braking system is frequently affected by vibration, impact and thermal cycling, which can easily lead to loosening of the threaded connection. The anti-loosening adhesive layer can effectively prevent the brake pad support pin 5 from fretting or falling off due to vibration.

[0041] The diameter of the mounting hole 4 gradually increases from the direction closest to the mounting cavity 2 towards the direction furthest from the mounting cavity 2.

[0042] In this embodiment, the gradually enlarging threaded mounting hole 4 makes it easier to insert the brake pad support pin 5, which can play a guiding role, reducing the difficulty of alignment and the risk of potential damage. When the brake pad support pin 5 is tightened, due to the change in hole diameter, different degrees of clamping force can be provided at different depths. The part near the mounting cavity 2 provides a tighter fit, while ensuring easy machining from the outside to the inside, eliminating the trouble of needing a hook cutter or corner cutter for traditional barbed holes.

[0043] This embodiment also provides a caliper 1, including the connection structure between the caliper 1 and the brake pad support pin 5 as described above. The specific structure of the caliper 1 is as described in the above embodiment. Since this caliper 1 adopts all the technical solutions of the above embodiment, it has at least all the beneficial effects brought about by the technical solutions of the above embodiment, which will not be described in detail here.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A connection structure between a caliper and a brake pad support pin, characterized in that, include: Caliper with mounting cavity; Brake pad support pins are provided within the mounting cavity; The caliper has multiple mounting points, which are independently located on opposite end faces of the caliper. Each mounting point includes a mating threaded mounting hole and a brake pad support pin. The threaded mounting hole is connected to the mounting cavity, and the brake pad support pin is threaded through the threaded mounting hole to fix the brake pad support pin to the caliper. The support pin is provided with a support boss, and the inner wall of the threaded mounting hole is formed with a countersunk platform for abutting against the support boss.

2. The connection structure between the caliper and the brake pad support pin as described in claim 1, characterized in that, The end of the support pin is provided with an internal spline countersunk hole.

3. The connection structure between the caliper and the brake pad support pin as described in claim 2, characterized in that, The support pin is provided with connecting threads.

4. The connection structure between the caliper and the brake pad support pin as described in claim 3, characterized in that, The brake pad support pin includes a threaded section and a smooth section connected in sequence. The connecting thread is located on the threaded section, and the diameter of the threaded section is larger than the diameter of the smooth section.

5. The connection structure between the caliper and the brake pad support pin as described in claim 4, characterized in that, The gap between the brake pad support pin and the inner wall of the threaded mounting hole is 0.05-0.2mm.

6. The connection structure between the caliper and the brake pad support pin as described in claim 5, characterized in that, An anti-loosening adhesive layer is provided between the brake pad support pin and the inner wall of the threaded mounting hole.

7. The connection structure between the caliper and the brake pad support pin as described in claim 1, characterized in that, The diameter of the threaded mounting hole gradually increases from the direction closest to the mounting cavity to the direction furthest from the mounting cavity.

8. A caliper, characterized in that, Includes the connection structure of the caliper and brake pad support pin as described in any one of claims 1-7.

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