A flexible sliding structure brake caliper assembly for suppressing abnormal noise

Abstract

The present invention relates to a brake caliper assembly with a flexible sliding structure for suppressing abnormal noise, and belongs to the technical field of automobile parts. It comprises a piston sliding system, a caliper sliding system and a flexible sliding structure; the flexible sliding structure comprises a flexible structure spring sheet, an outlet side spring sheet and a brake block, and the flexible structure spring sheet is provided with an elastic raised tongue sheet; the brake block is clamped between the flexible structure spring sheet and the outlet side spring sheet, with the raised tongue sheet on one side abutting against the brake block, and the raised tongue sheet on the other side abutting against the bracket. The present invention provides an elastic raised tongue sheet on the flexible structure spring sheet to prevent the brake block from moving horizontally and supports the brake block to prevent it from moving up and down; under non-braking conditions or full-range braking conditions, the sliding gap between the brake block and the bracket is eliminated to prevent the brake block from knocking back and forth between the sliding grooves, thereby preventing the brake block from making abnormal noises such as clanging and clicking.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile parts and relates to a brake caliper assembly with a flexible sliding structure for suppressing abnormal noise. Background Art

[0002] With the rapid development of the automotive industry, especially with the growing public acceptance of new energy and pure electric vehicles, people are demanding increasingly higher levels of vehicle vibration and noise control, sensory experience, and comfort. Brakes are not only crucial for braking performance but also closely related to the overall driving experience. Improperly matched brake structural parameters, or due to structural or operational issues, can cause severe vibration and noise in both non-braking and braking conditions, impacting the driving experience.

[0003] Abnormal (clonk, click) noise is the most common noise type and the primary problem currently faced. Its generation mechanism is as follows: The sliding clearance between the brake pad and the bracket causes the pad to slap and bang against the sliding groove, producing abnormal noise. This noise can occur in both non-braking and braking conditions: In non-braking conditions, the road surface is bumpy and uneven; in braking conditions, the rotation of the brake disc can cause abnormal (clonk, click) noise at the beginning of braking and when the brake is released and reversed.

[0004] How to solve the problem of abnormal noise caused by knocking and slapping due to the sliding gap between the brake pad and the bracket, as well as the problem of forward and reverse rotation; how to fundamentally overcome the problem of abnormal brake noise from the source of design. Currently, the commonly used methods are:

[0005] 1) Apply 3M tape between the bracket and the brake pad; 2) Apply rubber to the spring between the bracket and the brake pad; 3) Apply resin to the spring between the bracket and the brake pad; 4) Reduce the clearance between the sliding surfaces of the bracket and the brake pad. However, these methods can cause the material to become thinner and fall off over time, or mix with mud and dirt to form a blockage, and they also have poor process operability. Summary of the Invention

[0006] In view of this, an object of the present invention is to provide a brake caliper assembly with a flexible sliding structure that suppresses abnormal noise, so as to solve the problems described in the background art.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A brake caliper assembly with a flexible sliding structure for suppressing abnormal noise, comprising a piston sliding system and a caliper body sliding system, wherein the piston sliding system comprises a caliper body, a piston, a seal, a dust cover, a bleed screw and a screw guard, wherein the piston is connected to the caliper body through the seal and the dust cover, and the bleed screw and the screw guard are connected to the caliper body for bleed of the brake caliper assembly; the caliper body sliding system comprises a bracket, a guide pin, a pin sleeve and a vibration-damping sleeve, and the bracket is connected to the caliper body through the guide pin, the pin sleeve and the vibration-damping sleeve; the brake caliper assembly also comprises a flexible sliding structure, wherein the piston sliding system, the caliper body sliding system and the flexible sliding structure cooperate to complete the braking function, forming a brake caliper assembly with a flexible sliding structure; the flexible sliding structure comprises a flexible structure elastic A spring sheet, an outlet side spring sheet and a brake block, the brake block includes an inner brake block and an outer brake block, the flexible structure spring sheet is provided with an elastic flexible structure, the flexible structure protrudes along a side away from the sliding plane of the flexible structure spring sheet, the bracket includes an outlet side and an inlet side, the flexible structure spring sheet is clamped with the inlet side, and the outlet side spring sheet is clamped with the outlet side; the inner brake block and the outer brake block are both clamped between the sliding surfaces of the flexible structure spring sheet and the outlet side spring sheet; the height of the flexible structure protrusion is greater than the sliding gap between the bracket, the flexible structure spring sheet and the brake block; one end of the flexible structure abuts against the inner brake block and the outer brake block, and the other end of the flexible structure abuts against the horizontal force surface of the bracket.

[0009] Furthermore, the flexible structure is provided on both sliding surfaces of the flexible structure spring sheet, the flexible structure on one side abuts against the horizontal force-bearing surface of the bracket, and the flexible structure on the other side abuts against the inner brake block and the outer brake block.

[0010] Furthermore, the protrusion width of the flexible structure is not less than the full wear stroke of the brake block on one side.

[0011] Furthermore, the flexible structure is a raised tongue piece, and the raised tongue piece and the flexible structure spring piece are integrally formed.

[0012] Furthermore, the raised tongue piece includes a forward direction introduction part, a connecting top part and a backward direction introduction part, and the connecting top part is inclined downward along the two directions of the forward direction introduction part and the backward direction introduction part; the connecting top part abuts against the inner brake block and the outer brake block.

[0013] Furthermore, the sliding surface of the outlet-side spring piece is a plane.

[0014] The beneficial effects of the present invention are:

[0015] 1. This invention provides a brake caliper assembly with a flexible sliding structure that suppresses abnormal noise. This eliminates the sliding gap between the brake pad and the bracket, preventing the brake pad from clacking or slapping back and forth between the sliding grooves, and suppressing abnormal (clonk, click) noises, both in non-braking and full-range braking conditions.

[0016] 2. The flexible structure on the horizontal sliding surface of the flexible spring sheet of the present invention has a raised tongue piece provided on the horizontal sliding force-bearing surface with elastic force. That is, the structure has preload displacement and mechanical properties, which can provide a certain elastic force to form preload. This can further realize the integrated functions of preventing the brake block from moving horizontally, supporting the brake block to prevent vertical movement, reducing friction and sliding, and forcing the brake block to return to its original position.

[0017] 3. The present invention provides a brake caliper assembly with a flexible sliding structure for suppressing abnormal noise. The raised tongue piece that achieves the preload function is integrated with the flexible spring piece, and this structure is present on both the inner and outer sliding surfaces. The process is easy to operate, easy to implement, and low-cost. This avoids the problems associated with existing solutions such as applying 3M adhesive, coating the spring piece with rubber, or coating the spring piece with resin, which can lead to thinning and peeling over time, or blockage caused by mixing with mud and dirt.

[0018] Other advantages, objects, and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art upon examination of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0020] Figure 1 This is an exploded view of a brake caliper assembly with a flexible sliding structure for suppressing abnormal noise according to the present invention;

[0021] Figure 2 This is a schematic diagram of the installation of a flexible structure spring sheet of a flexible sliding structure brake caliper assembly for suppressing abnormal noise according to the present invention;

[0022] Figure 3 This is a schematic structural diagram of a flexible structure spring piece of a flexible sliding structure brake caliper assembly for suppressing abnormal noise according to the present invention;

[0023] Figure 4 This is a front view of a flexible structure spring piece of a flexible sliding structure brake caliper assembly for suppressing abnormal noise according to the present invention;

[0024] Figure 5This is a partial enlarged view of a protruding tongue piece of a flexible structure spring piece of a flexible sliding structure brake caliper assembly for suppressing abnormal noise according to the present invention;

[0025] Figure numerals: bleed screw 1, screw guard 2, caliper body 3, piston 4, seal 5, dust cover 6, inner brake pad 7, bracket 8, flexible structure spring sheet 9, flexible structure 91, forward direction introduction part 92, connecting top 93, backward direction introduction part 94, outer brake pad 10, outlet side spring sheet 11, guide pin 12, pin sleeve 13, vibration damping sleeve 14, bolt 15. DETAILED DESCRIPTION

[0026] The following describes the embodiments of the present invention by means of specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0027] Among them, the accompanying drawings are only for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the dimensions of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings.

[0028] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] See also Figures 1 to 5, is a flexible sliding structure brake caliper assembly for suppressing abnormal noise, including a piston sliding system, a caliper sliding system and a flexible sliding structure. The piston sliding system, the caliper sliding system and the flexible sliding structure work together to complete the braking function, forming a flexible sliding structure brake caliper assembly; the piston sliding system includes a caliper body 3, a piston 4, a seal 5, a dust cover 6, a bleed screw 1 and a screw shield 2. The piston 4 is connected to the caliper body 3 through the seal 5 and the dust cover 6. The bleed screw 1 and the screw shield 2 are connected to the caliper body 3 for bleed of the brake caliper assembly; the caliper body sliding system includes a bracket 8, a guide pin 12, a pin sleeve 13 and a vibration damping sleeve 14. The bracket 8 is connected to the caliper body 3 through the guide pin 12, the pin sleeve 13 The caliper body 3 is connected to the vibration damping sleeve 14; it has a flexible sliding structure including a flexible structure spring piece 9, an outlet side spring piece 11 and a brake block, the brake block includes an inner brake block 7 and an outer brake block 10, and the sliding surfaces on both sides of the flexible structure spring piece 9 are provided with an elastic flexible structure 91, the flexible structure 91 is a raised sparrow tongue piece, the raised sparrow tongue piece and the flexible structure spring piece 9 are integrally formed, the raised sparrow tongue piece includes a forward direction introduction part 92, a connecting top 93 and a backward direction introduction part 94, the connecting top 93 is inclined downward along the forward direction introduction part 92 and the backward direction introduction part 94; the sliding surface of the outlet side spring piece 11 is a plane; the bracket 8 includes an outlet side and an inlet side, Figure 2 In the figure, side A is the inlet side, side B is the outlet side, the flexible structure spring sheet 9 is clamped with the inlet side, and the outlet side spring sheet 11 is clamped with the outlet side; the inner brake block 7 and the outer brake block 10 are both clamped between the sliding surfaces of the flexible structure spring sheet 9 and the outlet side spring sheet 11, and the contact top 93 of the raised tongue piece on one side abuts against the inner brake block 7 and the outer brake block 10 respectively, and the contact top 93 of the raised tongue piece on the other side abuts against the horizontal force surface of the bracket 8; the raised height of the raised tongue piece is greater than the sliding gap between the bracket 8, the flexible structure spring sheet 9 and the brake block, and the raised width of the raised tongue piece is not less than the full wear stroke of the single-sided brake block.

[0030] The specific implementation is as follows:

[0031] After assembling all components of the brake caliper assembly as described above, bolts 15 are used to connect the caliper assembly to the brake disc. This eliminates the sliding clearance between the brake pad and bracket 8, preventing the pad from rattling or slapping back and forth between the sliding grooves, and suppressing abnormal (clonk, click) noise. The principle behind this design is that the flexible structure 91, a raised tab on the horizontal sliding surface of the flexible spring plate 9, exhibits elasticity, providing both preload displacement and mechanical properties, capable of providing a certain elastic force to generate preload. This integrated design prevents horizontal movement of the brake pad, supports the brake pad against vertical movement, reduces friction, and forces the brake pad to return to its original position. The raised tab, which provides the preload function, is integral with the flexible spring plate 9 and is present on both the inner and outer sliding surfaces. The process is highly operational, easily scalable, and cost-effective. It avoids the problems of thinning and falling off as the service life prolongs, or forming blockage after mixing with mud, sand and dirt, etc. caused by existing solutions such as sticking 3M glue, coating rubber on the spring sheet, coating resin on the spring sheet, etc.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions, which should all be included in the scope of the claims of the present invention.

Claims

1. A brake caliper assembly with a flexible sliding structure for suppressing abnormal noise, comprising a piston sliding system and a caliper body sliding system, wherein the piston sliding system comprises a caliper body (3), a piston (4), a seal (5), a dust cover (6), a bleed screw (1) and a screw shield (2), wherein the piston (4) is connected to the caliper body (3) through the seal (5) and the dust cover (6), and the bleed screw (1) and the screw shield (2) are connected to the caliper body (3) for bleed of the brake caliper assembly; the caliper body sliding system comprises a bracket (8), a guide pin (12), a pin sleeve (13) and a vibration damping sleeve (14), wherein the bracket (8) is connected to the caliper body (3) through the guide pin (12), the pin sleeve (13) and the vibration damping sleeve (14); and wherein the caliper body sliding system comprises a bracket (8), a guide pin (12), a pin sleeve (13) and a vibration damping sleeve (14), and wherein the bracket (8) is connected to the caliper body (3) through the guide pin (12), the pin sleeve (13) and the vibration damping sleeve (14); and wherein the caliper body sliding system comprises a bracket (8), a guide pin (12), a pin sleeve (13) and a vibration damping sleeve (14), and wherein the bracket (8) is connected to the caliper body (3) through the guide pin (12), the pin sleeve (13) and the vibration damping sleeve (14); The brake caliper assembly also includes a flexible sliding structure, and the piston sliding system, the caliper body sliding system and the flexible sliding structure cooperate to complete the braking function, forming a flexible sliding structure brake caliper assembly; the flexible sliding structure includes a flexible structure spring sheet (9), an outlet side spring sheet (11) and a brake block, and the brake block includes an inner brake block (7) and an outer brake block (10), and the flexible structure spring sheet (9) is provided with an elastic flexible structure (91), and the flexible structure (91) is raised along a side away from the sliding plane of the flexible structure spring sheet (9), and the bracket (8) includes an outlet side and an inlet side, and the flexible The structural spring piece (9) is clamped with the inlet side, and the outlet side spring piece (11) is clamped with the outlet side; the inner brake block (7) and the outer brake block (10) are both clamped between the sliding surfaces of the flexible structural spring piece (9) and the outlet side spring piece (11); the protruding height of the flexible structure (91) is greater than the sliding gap between the bracket (8), the flexible structural spring piece (9) and the brake block; one end of the flexible structure (91) is in contact with the inner brake block (7) and the outer brake block (10), and the other end of the flexible structure (91) is in contact with the horizontal force-bearing surface of the bracket (8); The flexible structure (91) is provided on both sliding surfaces of the flexible structure spring sheet (9), the flexible structure (91) on one side abuts against the horizontal force-bearing surface of the bracket (8), and the flexible structure (91) on the other side abuts against the inner brake block (7) and the outer brake block (10); The protruding width of the flexible structure (91) is not less than the full wear stroke of the brake block on one side.

2. The brake caliper assembly with a flexible sliding structure for suppressing abnormal noise according to claim 1, characterized in that: The flexible structure (91) is a raised tongue piece, and the raised tongue piece and the flexible structure spring piece (9) are integrally formed.

3. The brake caliper assembly with a flexible sliding structure for suppressing abnormal noise according to claim 2, characterized in that: The raised tongue piece includes a forward direction introduction portion (92), a connecting top portion (93) and a backward direction introduction portion (94), wherein the connecting top portion (93) is inclined downward along the forward direction introduction portion (92) and the backward direction introduction portion (94); and the connecting top portion (93) abuts against the inner brake block (7) and the outer brake block (10).

4. The brake caliper assembly with a flexible sliding structure for suppressing abnormal noise according to claim 1, characterized in that: The sliding surface of the outlet-side spring piece (11) is a plane.

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