Forward and reverse pin sliding shaft caliper assembly

Abstract

The utility model relates to the field of brakes, and discloses a positive and negative pin sliding shaft caliper assembly which comprises a caliper body, a mounting support, a main sliding shaft and an auxiliary sliding shaft, and a main sliding shaft mounting hole and a mounting through hole are formed in the two sides of the caliper body respectively. A support threaded hole and an auxiliary sliding shaft mounting hole are formed in the two sides of the mounting support respectively, the top end of the main sliding shaft extends into the main sliding shaft mounting hole of the clamp body, a threaded hole is formed in the top end of the auxiliary sliding shaft and penetrates through the auxiliary sliding shaft mounting hole of the mounting support, and the top end of the auxiliary sliding shaft is fixed to the clamp body through an auxiliary sliding shaft mounting bolt. The auxiliary sliding shaft installation bolt penetrates through the installation through hole and is in threaded connection with the threaded hole, the bottom end of the auxiliary sliding shaft extends into the auxiliary sliding shaft installation hole, and the two sliding shafts are in sliding fit with the clamp body and the installation support respectively. The mass center of the caliper assembly can be within the effective supporting range of the sliding shaft, and the problem of sliding shaft breakage is solved.

Description

Technical Field

[0001] This utility model relates to the field of brakes, and in particular to a positive and negative pin sliding shaft caliper assembly. Background Technology

[0002] Currently, brake calipers, as core components of vehicle braking systems, rely heavily on their sliding shafts for ensuring braking performance. However, current mainstream brake caliper assemblies typically suffer from the following structural design issues: the caliper assembly's center of gravity is not positioned within the effective support range of the sliding shaft, leading to excessive drag torque and sliding resistance during operation; and after installation, the sliding shaft's mounting bolts are exposed, posing a safety hazard of malicious disassembly and damage. With the continuous development of automotive electrification and autonomous driving technologies, existing hydraulic brake calipers are evolving towards electronic brake calipers. However, due to the weight of the motor, the sliding shafts on both sides experience radial stress at the same position during sliding, making them prone to breakage during vibration and durability testing. Therefore, a caliper assembly with high stability and superior braking system performance is needed. Utility Model Content

[0003] This utility model addresses the shortcomings of existing technologies by providing a positive and negative pin sliding shaft caliper assembly.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A positive and negative pin sliding shaft caliper assembly includes a caliper body, a mounting bracket, a main sliding shaft, and a secondary sliding shaft. The caliper body has a main sliding shaft mounting hole and a mounting through hole on both sides, respectively. The mounting bracket has a bracket threaded hole and a secondary sliding shaft mounting hole on both sides, respectively.

[0006] The bottom end of the main sliding shaft is provided with an external thread, and the bottom end of the main sliding shaft is threadedly connected to the threaded hole of the bracket through the external thread. The top end extends into the main sliding shaft mounting hole of the clamp body and slides relative to the main sliding shaft mounting hole in the working state.

[0007] The top end of the secondary sliding shaft has a threaded hole that passes through the secondary sliding shaft mounting hole of the mounting bracket. The top end of the secondary sliding shaft is fixed to the clamp body by a secondary sliding shaft mounting bolt. The secondary sliding shaft mounting bolt passes through the mounting through hole and is threadedly connected to the threaded hole. The bottom end of the secondary sliding shaft extends into the secondary sliding shaft mounting hole and slides relative to the secondary sliding shaft mounting hole during operation. Through the positive and negative pin structure that connects the main sliding shaft to the bracket by threads and the secondary sliding shaft to the clamp body by bolts, the center of gravity of the caliper assembly is kept within the effective support range of the sliding shaft, while the mounting bolts are concealed, solving the problems of excessive drag and safety hazards.

[0008] Preferably, in the working state, the caliper assembly guides the movement of the caliper body through the sliding engagement of the main sliding shaft with the caliper body and the auxiliary sliding shaft with the mounting bracket, forming a misaligned guide between the two sliding shafts that are in opposite directions and not on the same axis, thus forming a positive and negative pin structure.

[0009] Preferably, the top of the main sliding shaft is provided with an inner polygonal hole or a polygonal boss for torque transmission during assembly. The design of the inner polygonal hole or polygonal boss facilitates torque transmission during the assembly of the main sliding shaft, improving assembly efficiency.

[0010] Preferably, the main sliding shaft is provided with a main sliding shaft vent groove, which is arranged at least in the part of the main sliding shaft that extends into the clamp body. The vent groove structure can discharge air from the sliding pair during operation, further reducing drag torque.

[0011] Preferably, the secondary sliding shaft is provided with a secondary sliding shaft vent groove, which is arranged at least in the portion of the secondary sliding shaft that extends into the mounting bracket.

[0012] Preferably, the top of the clamp body is provided with a dust cap mounting slot, in which a dust cap for the main sliding shaft is installed. The dust cover and dust cap mounting structure on the clamp body can effectively protect the main sliding shaft, prevent impurities from entering the sliding pair, and improve the durability of the clamp.

[0013] Preferably, the mounting bracket has a countersunk hole for positioning the main sliding shaft on one side, and the top of the countersunk hole has a groove for mounting the dust cover of the main sliding shaft. The dust cover mounting groove and the countersunk hole on the mounting bracket facilitate the positioning and assembly of the sliding shaft, while also improving the dustproof effect.

[0014] Preferably, the bottom of the clamp body is provided with a mounting groove for the main sliding shaft embedded dust cover. The main sliding shaft dust cover is installed in the mounting groove for the main sliding shaft embedded dust cover. The bottom of the main sliding shaft dust cover is installed in the mounting groove for the outer flange of the main sliding shaft dust cover. The top of the main sliding shaft dust cover is engaged in the mounting groove for the main sliding shaft embedded dust cover of the clamp body.

[0015] Preferably, the secondary sliding shaft is provided with a secondary sliding shaft dust cover mounting groove; the outer circumferential surface of the secondary sliding shaft is provided with a secondary sliding shaft rubber sleeve mounting groove, and a secondary sliding shaft rubber sleeve is installed in the secondary sliding shaft rubber sleeve mounting groove, with the circumferential surface of the secondary sliding shaft rubber sleeve contacting the hole wall of the secondary sliding shaft mounting hole.

[0016] Preferably, the mounting bracket has a mounting groove for the dust cover of the secondary sliding shaft embedded in the top of the side for mounting the secondary sliding shaft. The dust cover of the secondary sliding shaft is installed in the mounting groove, the bottom end of the dust cover of the secondary sliding shaft is in the mounting groove, and the top end of the dust cover of the secondary sliding shaft is engaged in the mounting groove.

[0017] Preferably, the caliper assembly also includes a friction plate assembly and a bracket spring, which are mounted on a mounting bracket.

[0018] This utility model, by adopting the above technical solution, has significant technical effects:

[0019] 1. Two sliding shafts form a sliding fit with the caliper body and the mounting bracket respectively. This positive and negative pin structure makes the effective contact range between the sliding shaft and the hole long, and the center of gravity of the caliper assembly can be within the effective support range of the sliding shaft, thereby meeting the vibration durability requirements of the electronic brake caliper, reducing the problem of sliding shaft breakage, and meeting the vibration durability requirements of the electronic brake caliper.

[0020] 2. Effectively avoids the risk of malicious disassembly and damage due to exposed sliding shaft mounting bolts. The secondary sliding shaft is connected to the caliper body through secondary sliding shaft mounting bolts, but the secondary sliding shaft mounting bolts are located inside the wheel. After the caliper assembly is installed, the sliding shaft mounting bolts are not exposed, effectively avoiding the risk of malicious disassembly and damage.

[0021] 3. The sliding shaft structure can be applied to different scenarios such as hydraulic brake calipers and electronic brake calipers, depending on the power source of the caliper assembly, and has high adaptability.

[0022] 4. Since the center of gravity of the caliper assembly is located within the effective support range of the sliding shaft, and the effective contact range between the sliding shaft and the hole is long, it can effectively reduce drag torque and caliper sliding resistance. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is an exploded view of the caliper assembly;

[0025] Figure 3 This is a cross-sectional view of the caliper assembly;

[0026] Figure 4 This is a cross-sectional view of the clamp body;

[0027] Figure 5 This is a cross-sectional view of the mounting bracket;

[0028] Figure 6 This is a schematic diagram of the main sliding shaft;

[0029] Figure 7 This is a top view of the main sliding axis;

[0030] Figure 8 This is a schematic diagram of the secondary sliding shaft;

[0031] Figure 9 This is a top view of the secondary sliding shaft.

[0032] The parts referred to by the numbers in the above attached diagrams are as follows: 10, auxiliary sliding shaft mounting bolt; 11, mounting bracket; 111, main sliding shaft dust cover outer flange mounting groove; 112, bracket threaded hole; 113, auxiliary sliding shaft dust cover inner mounting groove; 114, auxiliary sliding shaft mounting hole; 115, sliding shaft positioning countersunk hole; 12, main sliding shaft dust cap; 13, clamp body; 131, main sliding shaft inner dust cover mounting groove; 132, dust cap mounting slot; 133... 134. Mounting hole for main sliding shaft; 14. Secondary sliding shaft; 141. Threaded hole; 142. Mounting groove for secondary sliding shaft dust cover; 143. Exhaust groove for secondary sliding shaft; 144. Mounting groove for secondary sliding shaft rubber sleeve; 15. Main sliding shaft; 151. Polygonal boss; 152. External thread; 153. Exhaust groove for main sliding shaft; 16. Dust cover for secondary sliding shaft; 17. Dust cover for main sliding shaft; 18. Rubber sleeve for secondary sliding shaft; 19. Friction plate assembly; 20. Support spring. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0034] Example 1

[0035] A type of positive and negative pin sliding shaft caliper assembly, such as Figure 1-3 As shown, it includes a clamp body 13, a mounting bracket 11, a main sliding shaft 15 and a secondary sliding shaft 14. The clamp body 13 has a main sliding shaft mounting hole 134 and a mounting through hole 133 on both sides respectively. The mounting bracket 11 has a bracket threaded hole 112 and a secondary sliding shaft mounting hole 114 on both sides respectively.

[0036] The bottom end of the main sliding shaft 15 is provided with an external thread 152. The bottom end of the main sliding shaft 15 is threadedly connected to the support threaded hole 112 through the external thread 152. The top end extends into the main sliding shaft mounting hole 134 of the clamp body 13 and slides relative to the main sliding shaft mounting hole 134 in the working state.

[0037] The top end of the secondary sliding shaft 14 is provided with a threaded hole 141, which passes through the secondary sliding shaft mounting hole 114 of the mounting bracket 11. The top end of the secondary sliding shaft 14 is fixed to the clamp body 13 by the secondary sliding shaft mounting bolt 10. The secondary sliding shaft mounting bolt 10 passes through the mounting through hole 133 and is threadedly connected to the threaded hole 141. The bottom end of the secondary sliding shaft 14 extends into the secondary sliding shaft mounting hole 114 and slides relative to the secondary sliding shaft mounting hole 114 in the working state.

[0038] In the working state, the caliper assembly guides the movement of the caliper body 13 through the sliding engagement of the main sliding shaft 15 with the caliper body 13 and the auxiliary sliding shaft 14 with the mounting bracket 11, forming a misaligned guide between the two sliding shafts in opposite directions and not on the same axis, thus forming a positive and negative pin structure.

[0039] like Figure 4 As shown, the top of the clamp body 13 is provided with a dust cap mounting groove 132, and the main sliding shaft dust cap 12 is installed in the dust cap mounting groove 132.

[0040] like Figure 5 As shown, the mounting bracket 11 has a sliding shaft positioning countersunk hole 115 for positioning the main sliding shaft 15 on the side where the main sliding shaft 15 is mounted. The top of the sliding shaft positioning countersunk hole 115 is provided with a main sliding shaft dust cover outward flange mounting groove 111.

[0041] The bottom of the clamp body 13 is provided with a main sliding shaft embedded dust cover mounting groove 131. A main sliding shaft dust cover 17 is installed in the main sliding shaft embedded dust cover mounting groove 131. The bottom of the main sliding shaft dust cover 17 is installed in the main sliding shaft dust cover outer flange mounting groove 111. The top of the main sliding shaft dust cover 17 is engaged in the main sliding shaft embedded dust cover mounting groove 131 of the clamp body 13.

[0042] like Figure 6-7 As shown, the top of the main sliding shaft 15 is provided with an inner polygonal hole or a polygonal boss 151 (the figure shows a polygonal boss 151, but the inner polygonal hole is not shown, although the assembly principle is the same) for torque transmission during assembly.

[0043] The main sliding shaft 15 is provided with a main sliding shaft exhaust groove 153, which is arranged at least in the part of the main sliding shaft 15 that extends into the clamp body 13.

[0044] like Figure 8-9 As shown, the secondary sliding shaft 14 is provided with a secondary sliding shaft exhaust groove 143, which is arranged at least in the part of the secondary sliding shaft 14 that extends into the mounting bracket 11.

[0045] The secondary sliding shaft 14 is provided with a secondary sliding shaft dust cover mounting groove 142; the outer peripheral surface of the secondary sliding shaft 14 is provided with a secondary sliding shaft rubber sleeve mounting groove 144, and a secondary sliding shaft rubber sleeve 18 is installed in the secondary sliding shaft rubber sleeve mounting groove 144, with the peripheral surface of the secondary sliding shaft rubber sleeve 18 in contact with the hole wall of the secondary sliding shaft mounting hole 114.

[0046] The mounting bracket 11 has a dust cover mounting groove 113 embedded in the top of the side for mounting the secondary sliding shaft 14. The dust cover 16 is installed in the dust cover mounting groove 113. The bottom end of the dust cover 16 is located in the dust cover mounting groove 113, and the top end of the dust cover 16 is engaged in the dust cover mounting groove 142.

[0047] The caliper assembly also includes a friction plate assembly 19 and a bracket spring 20, which are mounted on a mounting bracket 11.

[0048] The following is one assembly procedure for reference:

[0049] 1. After installing the bracket spring 20 onto the mounting bracket 11, install the friction plate assembly 19 into the corresponding groove of the bracket spring 20.

[0050] 1. Install the auxiliary sliding shaft dust cover 16 in the auxiliary sliding shaft dust cover mounting groove 113 of the mounting bracket 11, install the auxiliary sliding shaft 14 in the auxiliary sliding shaft mounting hole 114 of the mounting bracket 11, and install the other end of the auxiliary sliding shaft dust cover 16 on the auxiliary sliding shaft dust cover mounting groove 142 of the auxiliary sliding shaft 14; install one end of the main sliding shaft dust cover 17 in the main sliding shaft dust cover mounting groove 131 of the clamp body 13.

[0051] 2. Install the clamp body 13 on the mounting bracket 11. Install the other end of the main sliding shaft dust cover 17 on the outer flange mounting groove 111 of the main sliding shaft dust cover on the mounting bracket 11. Insert the main sliding shaft 15 into the main sliding shaft mounting hole 134 of the clamp body 13 and the sliding shaft positioning countersunk hole 115 of the mounting bracket 11 in sequence. Install and fix the main sliding shaft 15 to the mounting bracket 11 by means of threaded connection through the inner polygonal hole or polygonal boss 151. Install the main sliding shaft dust cap 12 on the dust cap mounting groove 132 of the clamp body 13.

[0052] 3. Install and fix the auxiliary sliding shaft mounting bolt 10 through the mounting through hole 133 of the clamp body 13 and the threaded hole 141 of the auxiliary sliding shaft 14 by threaded connection, thus completing the installation of the clamp assembly with positive and negative pin structure on both sides.

[0053] Working state: During braking, the mounting bracket 11 remains stationary, and the clamp body 13 moves axially along the main sliding shaft 15 under the push of the reaction force. The main sliding shaft 15 slides relative to the main sliding shaft mounting hole 134; the auxiliary sliding shaft 14 slides relative to the auxiliary sliding shaft mounting hole 114, realizing the contact braking between the friction plate assembly 19 and the brake disc; after the brake is released, the clamp body 13 returns to its original position along the sliding shaft under the action of the return mechanism.

[0054] In the description of this utility model, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0055] In summary, the above are merely preferred embodiments of this utility model. All equivalent variations and modifications made within the scope of the claims of this utility model should be covered by this utility model patent.

Claims

1. A positive and negative pin sliding shaft caliper assembly, characterized in that, include The clamp body (13) has a main sliding shaft mounting hole (134) and a mounting through hole (133) on both sides respectively. Mounting bracket (11), with a bracket threaded hole (112) and a secondary sliding shaft mounting hole (114) respectively on both sides of the mounting bracket (11). The main sliding shaft (15) has an external thread (152) at its bottom end. The bottom end of the main sliding shaft (15) is threaded to the support threaded hole (112) through the external thread (152). The top end extends into the main sliding shaft mounting hole (134) of the clamp body (13). In the working state, it slides relative to the main sliding shaft mounting hole (134). The secondary sliding shaft (14) has a threaded hole (141) at its top end, which is inserted into the secondary sliding shaft mounting hole (114) of the mounting bracket (11). The top end of the secondary sliding shaft (14) is fixed to the clamp body (13) by the secondary sliding shaft mounting bolt (10). The secondary sliding shaft mounting bolt (10) passes through the mounting through hole (133) and is threadedly connected to the threaded hole (141). The bottom end of the secondary sliding shaft (14) extends into the secondary sliding shaft mounting hole (114) and slides relative to the secondary sliding shaft mounting hole (114) in the working state. In the working state, the caliper assembly guides the movement of the caliper body (13) through the sliding engagement of the main sliding shaft (15) with the caliper body (13) and the auxiliary sliding shaft (14) with the mounting bracket (11), forming a positive and negative pin structure.

2. The positive and negative pin sliding shaft caliper assembly according to claim 1, characterized in that, The top of the main sliding shaft (15) is provided with an inner polygonal hole or a polygonal boss (151) for torque transmission during assembly.

3. The positive and negative pin sliding shaft caliper assembly according to claim 1, characterized in that, The main sliding shaft (15) is provided with a main sliding shaft exhaust groove (153), and the main sliding shaft exhaust groove (153) is arranged at least in the part of the main sliding shaft (15) that extends into the clamp body (13).

4. The positive and negative pin sliding shaft caliper assembly according to claim 1, characterized in that, The secondary sliding shaft (14) is provided with a secondary sliding shaft exhaust groove (143), which is arranged at least in the part of the secondary sliding shaft (14) that extends into the mounting bracket (11).

5. The positive and negative pin sliding shaft caliper assembly according to claim 1, characterized in that, The top of the clamp body (13) is provided with a dust cap mounting groove (132), and the main sliding shaft dust cap (12) is installed in the dust cap mounting groove (132).

6. The positive and negative pin sliding shaft caliper assembly according to claim 1 or 5, characterized in that, The mounting bracket (11) has a sliding shaft positioning countersunk hole (115) on the side of the main sliding shaft (15) for positioning and installing the main sliding shaft (15). The top of the sliding shaft positioning countersunk hole (115) is provided with a main sliding shaft dust cover outward flange mounting groove (111).

7. The positive and negative pin sliding shaft caliper assembly according to claim 6, characterized in that, The bottom of the clamp body (13) is provided with a main sliding shaft embedded dust cover mounting groove (131). The main sliding shaft dust cover (17) is installed in the main sliding shaft embedded dust cover mounting groove (131). The bottom of the main sliding shaft dust cover (17) is installed in the main sliding shaft dust cover outer flange mounting groove (111). The top of the main sliding shaft dust cover (17) is engaged in the main sliding shaft embedded dust cover mounting groove (131) of the clamp body (13).

8. The positive and negative pin sliding shaft caliper assembly according to claim 1, characterized in that, The secondary sliding shaft (14) is provided with a secondary sliding shaft dust cover mounting groove (142); the outer circumferential surface of the secondary sliding shaft (14) is provided with a secondary sliding shaft rubber sleeve mounting groove (144), and a secondary sliding shaft rubber sleeve (18) is installed in the secondary sliding shaft rubber sleeve mounting groove (144), and the circumferential surface of the secondary sliding shaft rubber sleeve (18) is in contact with the hole wall of the secondary sliding shaft mounting hole (114).

9. The positive and negative pin sliding shaft caliper assembly according to claim 1, characterized in that, The mounting bracket (11) has a mounting groove (113) for the dust cover of the secondary sliding shaft (14) on its top side. The dust cover (16) of the secondary sliding shaft is installed in the mounting groove (113). The bottom end of the dust cover (16) is located in the mounting groove (113), and the top end of the dust cover (16) is engaged in the mounting groove (142).

10. The positive and negative pin sliding shaft caliper assembly according to claim 1, characterized in that, The caliper assembly also includes a friction plate assembly (19) and a bracket spring (20), which are mounted on a mounting bracket (11).

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