Friction plate assembly adopting self-tensioning type wire spring and fixing clamp

Abstract

The utility model relates to the technical field of brake systems, in particular to a friction plate assembly adopting a self-tensioning type wire spring and a fixing clamp. A friction plate assembly adopting a self-tensioning type line spring is characterized in that an overhead spring is arranged between the top of an inner back plate of an inner friction plate assembly and the top of an outer back plate of an outer friction plate assembly, and the overhead spring is connected with the inner back plate and the outer back plate through the self-tensioning type line spring; the self-tensioning wire spring is formed by twisting a steel wire, the self-tensioning wire spring comprises a cross beam, a connecting part and a perforating part, the left end and the right end of the cross beam are connected with one end of the connecting part respectively, and the other end of the connecting part is connected with the perforating part. Compared with the prior art, the self-tensioning linear spring is connected through the spring connecting through holes in the back plates of the inner friction plate assembly and the outer friction plate assembly and the positioning structure on the top spring; even if the inner friction plate assembly and the outer friction plate assembly are in the maximum abrasion state, the self-tensioning type wire spring cannot be disengaged from the buckle, and lower dragging is obtained.

Description

Technical Field

[0001] This utility model relates to the field of braking system technology, specifically to a friction plate assembly and fixing clamp using a self-tensioning linear spring. Background Technology

[0002] In automotive braking systems, fixed calipers have more pistons, so the friction pad assembly generally has a larger area, which is detrimental to caliper drag. The aspect ratio of the friction surface is also larger than that of conventional floating calipers, and the resulting negative pressure is also extremely detrimental to caliper drag.

[0003] As the automotive industry becomes increasingly stringent in its energy consumption requirements, the development of low-drag brake calipers has become an industry trend. Without altering the existing spatial design of the fixed caliper housing, an innovative linear spring for the friction pads is introduced, allowing the friction pads to retract more flexibly after the braking pressure is released, thereby generating lower drag. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, this utility model provides a friction plate assembly and fixing clamp using a self-tensioning coil spring. The self-tensioning coil spring is connected by a spring connection through hole on the back plate of the inner and outer friction plate assemblies and a positioning structure on the top spring. This ensures that even under the maximum wear of the inner and outer friction plate assemblies, the self-tensioning coil spring will not come out of the latch and achieves lower drag.

[0005] To achieve the above objectives, a friction plate assembly employing a self-tensioning linear spring is designed, comprising an inner friction plate assembly, an outer friction plate assembly, and a top spring. The inner friction plate assembly includes an inner damping plate, an inner back plate, and an inner friction material. The inner friction material is connected to the inner side of the inner back plate, and the inner damping plate is connected to the outer side of the inner back plate. The outer friction plate assembly includes an outer damping plate, an outer back plate, and an outer friction material. The outer friction material is connected to the inner side of the outer back plate, and the outer damping plate is connected to the outer side of the outer back plate. The key feature is that a top spring is provided between the top of the inner back plate of the inner friction plate assembly and the top of the outer back plate of the outer friction plate assembly. The top spring is a self-tensioning linear spring connected to both the inner and outer back plates. The self-tensioning linear spring is formed by twisting steel wire and includes a crossbeam, a connecting part, and a through-hole part. The left and right ends of the crossbeam are respectively connected to one end of the connecting part, and the other end of the connecting part is connected to the through-hole part.

[0006] The crossbeam and the connecting parts at both ends form a bridge structure.

[0007] The overhead spring has a "king" - shaped structure. On the upper and lower sides of the middle part of the overhead spring, two limiting structures are respectively connected. The limiting structures on both sides are arranged symmetrically left and right. One end of the limiting structure is connected to the middle part of the overhead spring, and the other end of the limiting structure翘曲向上呈“S”状结构;位于上下两侧的两个限位结构之间分别设有定位结构,定位结构的一端与顶置弹簧的中部连接,定位结构的另一端向上翘起呈“U”状结构。

[0008] On the overhead spring below the limiting structure and the positioning structure, there are hollowed - out parts.

[0009] On the left and right sides of the upper parts of the inner backboard and the outer backboard, there are respectively spring connection through - holes connected to the self - expanding wire spring.

[0010] On the outer edge of the spring connection through - hole, there is a limiting groove, and the limiting groove is located on the inner side surfaces of the inner backboard and the outer backboard.

[0011] The middle part of the cross - beam of the self - expanding wire spring is embedded in the positioning structure of the overhead spring, and the end part of the perforated part of the self - expanding wire spring penetrates into the spring connection through - holes on the left and right sides of the inner backboard and the outer backboard.

[0012] The inner friction plate assembly and the outer friction plate assembly are embedded in the fixed clamp housing, and there are limiting bosses on the fixed clamp housing to limit the self - expanding wire spring.

[0013] A fixed clamp, in which a friction plate assembly with a self - expanding wire spring is installed.

[0014] Compared with the prior art, the present utility model provides a friction plate assembly and a fixed clamp adopting a self - expanding wire spring. The self - expanding wire spring is connected through the spring connection through - holes on the backboards of the inner and outer friction plate assemblies and the positioning structure on the overhead spring; ensuring that even in the state of maximum wear of the inner and outer friction plate assemblies, the self - expanding wire spring will not come off from the buckle, and lower drag is obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three - dimensional view of the structure of the friction plate assembly of the present utility model.

[0016] Figure 2 is Figure 1 a partially enlarged schematic view.

[0017] Figure 3 is Figure 1 a partial cross - sectional view.

[0018] Figure 4 is a schematic view of the structure of the self - expanding wire spring in the present utility model.

[0019] Figure 5This is a schematic diagram of the top-mounted spring structure in this utility model.

[0020] Figure 6 This is a schematic diagram showing the connection between a self-tensioning linear spring and a top-mounted spring.

[0021] Figure 7 This is a schematic diagram of the mounting point for a self-tensioning coil spring.

[0022] Figure 8 This is a schematic diagram of the installation and limiting structure for a self-tensioning wire spring.

[0023] Figure 9 This is a schematic diagram of the fixing clamp structure on which the friction plate assembly of this utility model is installed.

[0024] See Figures 1 to 5 1 is the inner back plate, 2 is the inner friction material, 3 is the outer shock absorber, 4 is the outer back plate, 5 is the outer friction material, 6 is the top spring, 6-1 is the limiting structure, 6-2 is the positioning structure, 7 is the self-tensioning linear spring, 7-1 is the crossbeam, 7-2 is the connecting part, 7-3 is the through hole, 8 is the spring connecting through hole, 9 is the limiting groove, and 10 is the limiting boss. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figures 1 to 4 As shown, there are an inner friction plate assembly, an outer friction plate assembly, and a top spring. The inner friction plate assembly includes an inner damping plate, an inner back plate 1, and an inner friction material 2. The inner friction material 2 is connected to the inner side of the inner back plate 1, and the inner damping plate is connected to the outer side of the inner back plate 1. The outer friction plate assembly includes an outer damping plate 3, an outer back plate 4, and an outer friction material 5. The outer friction material 5 is connected to the inner side of the outer back plate 4, and the outer damping plate 3 is connected to the outer side of the outer back plate 4. A top spring 6 is provided between the top of the inner back plate 1 of the inner friction plate assembly and the top spring 6 is a self-tensioning linear spring 7 connected to the inner back plate 1 and the outer back plate 4. The self-tensioning linear spring 7 is formed by twisting steel wire and includes a crossbeam, a connecting part, and a through-hole part. The left and right ends of the crossbeam 7-1 are respectively connected to one end of the connecting part 7-2, and the other end of the connecting part 7-2 is connected to the through-hole part 7-3.

[0027] The crossbeam 7-1 and the connecting parts 7-2 at both ends form a bridge structure. Through this bridge structure, stable elastic deformation generates stable working elastic force.

[0028] The inner back plate 1 and the outer back plate 4 are respectively provided with spring connection through holes 8 on the left and right sides of the upper part, which are connected to the self-tensioning wire spring 7.

[0029] like Figure 5As shown, the overhead spring 6 is in a "king" - shaped structure. On the upper and lower sides of the middle part of the overhead spring 6, two limiting structures 6 - 1 are respectively connected. The limiting structures 6 - 1 on both sides are arranged symmetrically left and right. One end of the limiting structure 6 - 1 is connected to the middle part of the overhead spring 6, and the other end of the limiting structure 6 - 1翘向上呈“S”状结构(这里“翘向上”原文未明确动词,暂用“翘向上”表述,可能需要结合实际文本修正);定位结构6 - 2 are respectively arranged between the two limiting structures 6 - 1 on the upper and lower sides. One end of the positioning structure 6 - 2 is connected to the middle part of the overhead spring 6, and the other end of the positioning structure 6 - 2翘向上呈“U”状结构(这里“翘向上”原文未明确动词,暂用“翘向上”表述,可能需要结合实际文本修正).

[0030] On the overhead spring 6 below the limiting structure 6 - 1 and the positioning structure 6 - 2, there is a hollow.

[0031] Through the spring connection through - holes 8 and the limiting surfaces on the inner backplate 1 and the outer backplate 4, the self - expanding wire spring 7 can be accurately positioned. Through the positioning structure 6 - 2 on the overhead spring 6, it can prevent the self - expanding wire spring 7 from falling off during use; prevent the self - expanding wire spring 7 from rotating during use and avoid interference with other parts; prevent the self - expanding wire spring 7 from vibrating with abnormal noises when vibrating on bumpy and vibrating roads.

[0032] As Figure 2 , Figure 3 , Figure 6 As shown, in the middle of the cross - beam 7 - 1 of the self - expanding wire spring 7, it is embedded in the positioning structure 6 - 2 of the overhead spring 6, and the end of the perforated part 7 - 3 of the self - expanding wire spring 7 penetrates into the spring connection through - holes 8 on the left and right sides of the inner backplate 1 and the outer backplate 4.

[0033] As Figure 9 所示,固定钳内安装有自张式线弹簧的摩擦片总成。(这里原文“所示”前面内容缺失,无法准确翻译这部分,建议补充完整原文)

[0034] In the free state, the self - expanding wire spring 7 is fixed by the spring connection through - holes 8 on the inner backplate 1 of the inner friction plate assembly and the outer backplate 4 of the outer friction plate assembly and the positioning structure 6 - 2 on the overhead spring 6. This positioning structure 6 - 2 has the functions of anti - vibration, anti - falling, and anti - rotation.

[0035] During the braking process, under the piston pressure, the friction materials of the inner friction plate assembly and the outer friction plate assembly are closely attached to the brake disc; after the pressure is released, under the action of the force of the self - expanding wire spring 7, the inner friction plate assembly and the outer friction plate assembly are quickly separated from the brake disc, so that the brake caliper obtains a lower drag.

[0036] The structure design of the utility model is optimized to ensure that even in the state of maximum wear of the friction plate assembly, the spring will not fall off from the buckle.

[0037] As Figure 7As shown, the self-tensioning coil spring 7 is interference-fitted into the inlet A of the positioning structure 7-2, and then the through holes 7-3 at points B and C are assembled into the spring connection through holes 8 on the back plate. Under the action of the limiting surfaces at A and B, the self-tensioning coil spring 7 at point C automatically moves forward from the redundant structure into the three-proof structure at a certain angle. Thus, the spring forms complete constraint in the X, Y, and Z directions, thereby achieving the three-proof functions of preventing drop, vibration, and rotation.

[0038] like Figure 8 As shown, a limiting groove 9 is provided on the outer edge of the spring connection through hole 7. The limiting groove 9 is located on the inner side of the inner back plate 1 and the outer back plate 4.

[0039] The inner friction plate assembly and the outer friction plate assembly are embedded in the fixed clamp housing, and the fixed clamp housing is provided with a limiting boss 10 for limiting the self-tensioning coil spring 7.

[0040] A limiting groove 9 is provided on the back plate, which serves the same purpose as the three-proof structure of the top spring 6; a limiting boss 10 is provided on the fixing clamp housing, which can effectively limit the rotation of the self-tensioning coil spring 7.

[0041] The self-tensioning coil spring 7 of this utility model is made of coiled steel wire of different diameters. The corresponding wire diameter can be selected according to the design requirements, and then the wire is bent into the design shape on a bending machine and then cut directly from the raw material coil. The process is simple, the production is efficient, and the cost is low.

[0042] Assembly process of this utility model:

[0043] 1. Assemble pistons and other small parts in the housing of the clamp;

[0044] 2. Assemble the friction plate and guide pin in the fixed clamp housing;

[0045] 3. Assemble the self-tensioning coil spring: First, insert the middle part of the crossbeam of the self-tensioning coil spring into the top spring positioning structure; then insert the through holes at both ends into the spring connection through holes on the friction plate back plate.

[0046] 4. Complete the assembly.

Claims

1. A friction plate assembly employing a self-tensioning linear spring, comprising an inner friction plate assembly, an outer friction plate assembly, and a top-mounted spring, wherein the inner friction plate assembly comprises an inner damping plate, an inner back plate (1), and an inner friction material (2), the inner side of the inner back plate (1) is connected to the inner friction material (2), and the outer side of the inner back plate (1) is connected to the inner damping plate; wherein the outer friction plate assembly comprises an outer damping plate (3), an outer back plate (4), and an outer friction material (5), the inner side of the outer back plate (4) is connected to the outer friction material (5), and the outer side of the outer back plate (4) is connected to the outer damping plate (3), characterized in that: A top spring (6) is provided between the inner back plate (1) of the inner friction plate assembly and the top of the outer back plate (4) of the outer friction plate assembly. The top spring (6) is connected to the inner back plate (1) and the outer back plate (4) by a self-tensioning wire spring (7); the self-tensioning wire spring (7) is formed by twisting a steel wire. The self-tensioning wire spring (7) includes a cross beam, a connecting part, and a perforating part. The left and right ends of the cross beam (7-1) are respectively connected to one end of the connecting part (7-2), and the other end of the connecting part (7-2) is connected to the perforating part (7-3).

2. The friction plate assembly using a self-tensioning linear spring according to claim 1, characterized in that: The cross beam (7-1) and the connecting parts (7-2) at both ends form a bridge structure.

3. A friction plate assembly employing a self-tensioning linear spring according to claim 1, characterized in that: The top spring (6) has a "king" - shaped structure. Two limiting structures (6-1) are respectively connected to the upper and lower sides of the middle part of the top spring (6). The limiting structures (6-1) on both sides are arranged symmetrically left and right. One end of the limiting structure (6-1) is connected to the middle part of the top spring (6), and the other end of the limiting structure (6-1)翘起向上呈"S"状结构;定位结构(6-2)分别设置在上下两侧的两个限位结构(6-1)之间,定位结构(6-2)的一端与顶置弹簧(6)的中部连接,定位结构(6-2)的另一端向上翘起呈"U"状结构。 4. A friction plate assembly employing a self-tensioning linear spring according to claim 3, characterized in that: There are hollowed - outs on the top spring (6) below the limiting structures (6-1) and the positioning structures (6-2).

5. A friction plate assembly employing a self-tensioning linear spring according to claim 1, characterized in that: Spring connection through - holes (8) connected to the self - tensioning wire spring (7) are respectively provided on the left and right sides of the upper parts of the inner back plate (1) and the outer back plate (4).

6. A friction plate assembly employing a self-tensioning linear spring according to claim 1, characterized in that: A limiting groove (9) is provided at the outer edge of the spring connection through - hole (8). The limiting groove (9) is located on the inner side surfaces of the inner back plate (1) and the outer back plate (4).

7. A friction plate assembly employing a self-tensioning linear spring according to claim 1, characterized in that: The middle part of the cross beam (7-1) of the self - tensioning wire spring (7) is embedded in the positioning structure (6-2) of the top spring (6), and the end of the perforating part (7-3) of the self - tensioning wire spring (7) penetrates into the spring connection through - holes (8) on the left and right sides of the inner back plate (1) and the outer back plate (4).

8. A friction plate assembly employing a self-tensioning linear spring according to claim 1, characterized in that: The inner friction plate assembly and the outer friction plate assembly are embedded in a fixed caliper housing, and a limiting boss (10) for restricting the self - tensioning wire spring (7) is provided on the fixed caliper housing.

9. A fixing clamp, characterized in that: The friction plate assembly using a self - tensioning wire spring as described in any one of claims 1 - 7 is installed in the fixed caliper.

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