Multi-cylinder high-performance brake caliper

Abstract

The utility model discloses a kind of multi-cylinder high-performance brake caliper, including caliper shell and support, multiple sub-pump cylinder bodies are provided on caliper shell, piston is provided in each sub-pump cylinder body, brake pad assembly is provided on piston, brake pad assembly includes sound-absorbing sheet, metal backplate, heat insulating sheet, heat sink and friction block, the inner end surface of heat sink and friction block is bonded fixed;Limiting recess is provided on the inner end surface of heat sink, heat insulating sheet is embeddedly set in limiting recess, the inner end surface of heat sink and the outer end surface of metal backplate are bonded fixed, the inner end surface of metal backplate and the outer end surface of sound-absorbing sheet are bonded fixed;Positioning plate is integrally provided on the upper end of support, the upper end of metal backplate is provided with positioning sliding block;Positioning lug is provided on the lower end of caliper shell, the lower end of metal backplate is provided with guide through-hole, positioning lug one end passes through guide through-hole setting.The above technical solution, structure design is reasonable, braking performance is stable, brake pad heat dissipation performance is good, heat insulation effect is good and practicality is good.

Description

Technical Field

[0001] This utility model relates to the field of automotive braking technology, specifically to a multi-cylinder high-performance brake caliper. Background Technology

[0002] The structure of an automotive brake caliper includes the caliper body, piston, brake pad assembly, and hydraulic system. Braking is achieved by hydraulically driving the piston to push the brake pads against the brake disc through friction. The caliper body is made of high-strength alloy and is used to fix the piston and brake pad assembly. According to the operating principle, they are classified as follows: floating calipers (single-side piston): only one side of the piston pushes the brake pads, and the reaction force causes the caliper body to slide to achieve dual-side braking, which is common in passenger cars; fixed calipers (dual-side piston): the pistons on both sides move synchronously, and the braking force is balanced, which is mainly used in high-performance models.

[0003] However, the existing automotive brake caliper structure still has shortcomings: the structural design is unreasonable. Due to the high-speed friction between the brake pads and the brake disc, a large amount of heat is generated at this moment. If the heat dissipation and heat insulation of the brake pad assembly are not good, a large amount of heat will be transferred to the metal backing plate of the brake pads, which will cause the brake caliper to overheat. In severe cases, it may cause air lock in the brake fluid or even damage the hydraulic pipeline, resulting in unstable braking performance and poor practicality. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a multi-cylinder high-performance brake caliper with reasonable structural design, stable braking performance, good brake pad heat dissipation performance, good heat insulation effect and good practicality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-cylinder high-performance brake caliper, comprising a caliper housing and a bracket, wherein the caliper housing is provided with multiple slave cylinders, each slave cylinder is provided with a piston, and a brake pad assembly is provided on the piston. The brake pad assembly includes a muffler, a metal backplate, a heat insulation plate, a heat dissipation plate, and a friction block. The inner end face of the friction block is provided with several positioning slots. The outer end face of the heat dissipation plate is aligned with each positioning slot and is provided with a positioning protrusion. Each positioning protrusion is inserted into the aligned positioning slot, and the heat dissipation plate is bonded and fixed to the inner end face of the friction block. The inner end face of the heat dissipation plate is provided with a limiting groove, the heat insulation plate is embedded in the limiting groove, the inner end face of the heat dissipation plate is bonded and fixed to the outer end face of the metal backplate, and the inner end face of the metal backplate is bonded and fixed to the outer end face of the muffler.

[0006] The upper end of the bracket is integrally provided with a positioning plate, and the upper end of the metal back plate is provided with a positioning slider; the lower end of the caliper housing is provided with a positioning protrusion, and the lower end of the metal back plate is provided with a guide hole aligned with the positioning protrusion, with one end of the positioning protrusion passing through the guide hole.

[0007] The present invention is further configured such that: the heat sink plate is provided with a plurality of heat dissipation through holes, and the positioning protrusion is bonded and fixed to the inner wall surface of the aligned positioning slot.

[0008] The present invention is further configured such that the bracket and the caliper housing are connected by a sliding pin or bolt.

[0009] The present invention is further configured such that: the friction block is made of ceramic material, and at least one ventilation and heat dissipation groove is provided on the outer end face of the friction block.

[0010] The present invention is further configured such that: the slave pump cylinder body includes two first slave pump cylinder bodies and two second slave pump cylinder bodies, the two first slave pump cylinder bodies are integrally disposed on the left end face of the caliper housing, and the two second slave pump cylinder bodies are integrally disposed on the right end face of the caliper housing;

[0011] The piston includes two first pistons and two second pistons. A first piston is provided at the right end of each first sub-pump cylinder body. A first sealing ring is provided between the first piston and the right port of the first sub-pump cylinder body.

[0012] A second piston is provided at the left end of each second pump cylinder, and a second sealing ring is provided between the second piston and the left port of the second pump cylinder.

[0013] The present invention is further configured such that: the caliper housing is provided with a brake disc mounting groove between the first piston and the second piston; the brake pad assembly includes a first brake pad assembly and a second brake pad assembly; the first brake pad assembly is installed at the left end of the brake disc mounting groove, and the left end of the first brake pad assembly is connected to the right end face of the first piston; the second brake pad assembly is installed at the right end of the brake disc mounting groove, and the right end of the second brake pad assembly is connected to the left end face of the second piston; the first brake pad assembly and the second brake pad assembly are symmetrically arranged.

[0014] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model has a reasonable structural design. The heat dissipation plate in the brake pad assembly is made of copper or aluminum, and the heat insulation sheet is an aerogel heat insulation sheet. The aerogel heat insulation sheet not only has a good heat insulation effect, but also has a sound insulation effect. The heat dissipation plate is provided with multiple heat dissipation holes, the friction block is made of ceramic, and at least one ventilation and heat dissipation groove is provided on the outer end face of the friction block, so that the friction block has good heat dissipation performance. The heat insulation sheet can effectively prevent a large amount of heat from being transferred to the metal backing plate of the brake pad, which will not cause the brake caliper to overheat and the braking performance is stable.

[0015] In addition, a positioning plate is integrally set at the upper end of the bracket, and the metal back plate of the brake pad assembly slides along the positioning plate through the positioning slider; a positioning protrusion is set at the lower end of the caliper housing, and one end of the positioning protrusion passes through the guide hole at the lower end of the metal back plate, which makes the overall sliding stability of the brake pad assembly better, less prone to shaking, and the braking performance more stable and practical.

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0018] Figure 2 This is a partial cross-sectional view of an embodiment of the present utility model;

[0019] Figure 3 for Figure 2 Enlarged schematic diagram of part I in the middle. Detailed Implementation

[0020] In the description of this embodiment, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] See Figures 1 to 3 This utility model discloses a multi-cylinder high-performance brake caliper, including a caliper housing 1 and a bracket 2. The caliper housing 1 is provided with multiple slave cylinders 3, each slave cylinder 3 containing a piston 4. A brake pad assembly 5 is mounted on the piston 4. The brake pad assembly 5 includes a muffler 51, a metal backing plate 52, a heat insulation plate 53, a heat dissipation plate 54, and a friction block 55. The inner end face of the friction block 55 is provided with several positioning slots 551, and the outer end face of the heat dissipation plate 54 is aligned with each… Each positioning slot is provided with a positioning protrusion 542, and each positioning protrusion 542 is inserted into the aligned positioning slot 551. The heat sink 54 is bonded and fixed to the inner end face of the friction block 55. A limiting groove 541 is provided on the inner end face of the heat sink 54, and the heat insulation sheet 53 is embedded in the limiting groove 541. The inner end face of the heat sink 54 is bonded and fixed to the outer end face of the metal back plate 52, and the inner end face of the metal back plate 52 is bonded and fixed to the outer end face of the sound-absorbing sheet 51.

[0022] The upper end of the bracket 2 is integrally provided with a positioning plate 21, and the upper end of the metal back plate 52 is provided with a positioning slider 521; the lower end of the caliper housing 1 is provided with a positioning protrusion 11, and the lower end of the metal back plate 52 is provided with a guide hole 522 aligned with the positioning protrusion 11, and one end of the positioning protrusion 11 passes through the guide hole 522.

[0023] Preferably, the sound-absorbing sheet 51, the metal back plate 52, the heat insulation sheet 53, the heat dissipation plate 54 and the friction block 55 are bonded together to form an integral structure or fixed by fasteners to form an integral structure, wherein the fasteners are screws, rivets or bolts.

[0024] The outer end face of the friction block 55 is used to rub against the existing brake disc to achieve braking. The heat dissipation plate 54 is made of copper or aluminum. The heat insulation sheet 53 is an aerogel heat insulation sheet, which not only has good heat insulation effect but also sound insulation effect.

[0025] To make the structural design of this utility model more reasonable, as a preferred embodiment, the heat sink 54 is provided with a plurality of heat dissipation through holes 543, and the positioning protrusion 542 is bonded and fixed to the inner wall surface of the aligned positioning slot 551.

[0026] The bracket 2 is connected to the caliper housing 1 by a sliding pin or bolt. The friction block 55 is made of ceramic, and at least one ventilation and heat dissipation groove 552 is provided on the outer end face of the friction block 55.

[0027] Preferably, the slave cylinder body 3 includes two first slave cylinder bodies 31 and two second slave cylinder bodies 32. The two first slave cylinder bodies 31 are integrally disposed on the left end face of the caliper housing 1, and the two second slave cylinder bodies 32 are integrally disposed on the right end face of the caliper housing 1.

[0028] The piston 4 includes two first pistons 41 and two second pistons 42. Each first sub-pump cylinder 31 is provided with a first piston 41 at its right end. A first sealing ring is provided between the first piston 41 and the right port of the first sub-pump cylinder 31.

[0029] A second piston 42 is provided at the left end of each second sub-pump cylinder 32, and a second sealing ring is provided between the second piston 42 and the left port of the second sub-pump cylinder 32.

[0030] Preferably, the caliper housing 1 is provided with a brake disc mounting groove 10 located between the first piston 41 and the second piston 42. The brake pad assembly 5 includes a first brake pad assembly and a second brake pad assembly. The first brake pad assembly is installed at the left end of the brake disc mounting groove 10, and the left end of the first brake pad assembly is connected to the right end face of the first piston 41. The second brake pad assembly is installed at the right end of the brake disc mounting groove 10, and the right end of the second brake pad assembly is connected to the left end face of the second piston 42. The first brake pad assembly and the second brake pad assembly are symmetrically arranged.

[0031] In practical applications, the heat dissipation plate 54 inside the brake pad assembly 5 is made of copper or aluminum, and the heat insulation sheet 53 is an aerogel heat insulation sheet. The aerogel heat insulation sheet not only has good heat insulation effect, but also has sound insulation effect. The heat dissipation plate 54 is provided with multiple heat dissipation holes 543, the friction block 55 is made of ceramic, and at least one ventilation heat dissipation groove 552 is provided on the outer end face of the friction block 55. The structure is reasonable, which makes the friction block 55 have good heat dissipation performance. The heat insulation sheet 53 can effectively prevent a large amount of heat from being transferred to the metal backing plate of the brake pad, which will not cause the brake caliper to overheat and the braking performance is stable.

[0032] In addition, a positioning plate 21 is integrally provided on the upper end of the bracket 2, and the metal back plate 52 of the brake pad assembly 5 slides along the positioning plate 21 through the positioning slider 521; a positioning protrusion 11 is provided at the lower end of the caliper housing 1, and one end of the positioning protrusion 11 passes through the guide hole 521 at the lower end of the metal back plate 52, so that the overall sliding stability of the brake pad assembly 5 is better, it is not easy to shake, the braking performance is more stable and practical.

[0033] The above description of the specific embodiments of this utility model is only used to further illustrate this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-essential improvements and adjustments made to this utility model by technical engineers based on the above description of the utility model shall fall within the scope of protection of this utility model.

Claims

1. A multi-cylinder high-performance brake caliper, comprising a caliper housing (1) and a bracket (2), wherein a plurality of slave cylinder bodies (3) are disposed on the caliper housing (1), each slave cylinder body (3) is provided with a piston (4), and a brake pad assembly (5) is disposed on the piston (4), characterized in that: The brake pad assembly (5) includes a sound-absorbing pad (51), a metal back plate (52), a heat insulation pad (53), a heat dissipation plate (54), and a friction block (55). The inner end face of the friction block (55) is provided with a plurality of positioning slots (551). The outer end face of the heat dissipation plate (54) is provided with a positioning protrusion (542) aligned with each positioning slot. Each positioning protrusion (542) is inserted into the aligned positioning slot (551), and the heat dissipation plate (54) is bonded and fixed to the inner end face of the friction block (55). The inner end face of the heat dissipation plate (54) is provided with a limiting groove (541). The heat insulation pad (53) is embedded in the limiting groove (541). The inner end face of the heat dissipation plate (54) is bonded and fixed to the outer end face of the metal back plate (52), and the inner end face of the metal back plate (52) is bonded and fixed to the outer end face of the sound-absorbing pad (51). The bracket (2) is integrally provided with a positioning plate (21) at the upper end, and the metal back plate (52) is provided with a positioning slider (521) at the upper end; the caliper housing (1) is provided with a positioning protrusion (11) at the lower end, and the metal back plate (52) is provided with a guide hole (522) aligned with the positioning protrusion (11) at the lower end, and one end of the positioning protrusion (11) passes through the guide hole (522).

2. The multi-cylinder high-performance brake caliper according to claim 1, characterized in that: The heat sink (54) is provided with a plurality of heat dissipation through holes (543), and the positioning protrusion (542) is bonded and fixed to the inner wall surface of the aligned positioning slot (551).

3. A multi-cylinder high-performance brake caliper according to claim 2, characterized in that: The bracket (2) is connected to the caliper housing (1) by a sliding pin or bolt.

4. A multi-cylinder high-performance brake caliper according to claim 3, characterized in that: The friction block (55) is made of ceramic material, and at least one ventilation and heat dissipation groove (552) is provided on the outer end face of the friction block (55).

5. A multi-cylinder high-performance brake caliper according to claim 1 or 4, characterized in that: The slave cylinder body (3) includes two first slave cylinder bodies (31) and two second slave cylinder bodies (32). The two first slave cylinder bodies (31) are integrally disposed on the left end face of the caliper housing (1), and the two second slave cylinder bodies (32) are integrally disposed on the right end face of the caliper housing (1). The piston (4) includes two first pistons (41) and two second pistons (42). A first piston (41) is provided at the right end of each first sub-pump cylinder (31). A first sealing ring is provided between the first piston (41) and the right port of the first sub-pump cylinder (31). A second piston (42) is provided at the left end of each second sub-pump cylinder (32), and a second sealing ring is provided between the second piston (42) and the left port of the second sub-pump cylinder (32).

6. A multi-cylinder high-performance brake caliper according to claim 5, characterized in that: The caliper housing (1) is provided with a brake disc mounting groove (10) located between the first piston (41) and the second piston (42). The brake pad assembly (5) includes a first brake pad assembly and a second brake pad assembly. The first brake pad assembly is installed at the left end of the brake disc mounting groove (10), and the left end of the first brake pad assembly is connected to the right end face of the first piston (41). The second brake pad assembly is installed at the right end of the brake disc mounting groove (10), and the right end of the second brake pad assembly is connected to the left end face of the second piston (42). The first brake pad assembly and the second brake pad assembly are symmetrically arranged.

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