阅读说明：本技术 一种单活塞cbs制动卡钳 (Single-piston CBS brake caliper ) 是由 施军 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种单活塞CBS制动卡钳,包括：钳体,具有用于夹持制动盘的钳口；主刹缸孔,设于钳口一侧的钳体内,其一端朝向钳口另一侧设有开口；联动缸孔,沿主刹缸孔轴线设于主刹缸孔另一端的钳体内,且其一端设有连通主刹缸孔的开口；台阶活塞,包括紧密滑动于联动缸孔内的柱部,及紧密滑动于主刹缸孔内的台阶部,台阶部的头端与柱部的底端相连接；刹车片,包括相对设于钳口内的动刹车片及定刹车片,定刹车片与钳口的另一侧贴合,动刹车片与台阶部的底端相贴合；主刹进油孔,设于钳体上并连通主刹缸孔；以及联动进油孔,设于钳体上并连通联动缸孔。该CBS制动卡钳结构合理,体积小,便于小规格轮毂的踏板摩托车安装使用且能有效降低生产成本。(The invention discloses a single-piston CBS brake caliper, which comprises: a caliper body having jaws for gripping a brake disc; the main brake cylinder hole is arranged in the caliper body on one side of the jaw, and one end of the main brake cylinder hole faces to the other side of the jaw and is provided with an opening; the linkage cylinder hole is arranged in the caliper body at the other end of the main brake cylinder hole along the axis of the main brake cylinder hole, and one end of the linkage cylinder hole is provided with an opening communicated with the main brake cylinder hole; the step piston comprises a column part tightly sliding in the linkage cylinder hole and a step part tightly sliding in the main brake cylinder hole, and the head end of the step part is connected with the bottom end of the column part; the brake block comprises a movable brake block and a fixed brake block which are oppositely arranged in the jaw opening, the fixed brake block is attached to the other side of the jaw opening, and the movable brake block is attached to the bottom end of the step part; the main brake oil inlet is arranged on the caliper body and communicated with the main brake cylinder hole; and the linkage oil inlet hole is arranged on the clamp body and communicated with the linkage cylinder hole. The CBS brake caliper is reasonable in structure, small in size, convenient to install and use for the pedal motorcycle with the small-specification wheel hub and capable of effectively reducing production cost.)

1. A single piston CBS brake caliper characterized by: the method comprises the following steps:

a caliper body (100) having a jaw (110) for gripping a brake disc;

the main brake cylinder hole (120) is arranged in the caliper body (100) on one side of the jaw (110), and one end of the main brake cylinder hole is provided with an opening towards the other side of the jaw (110);

the linkage cylinder hole (130) is arranged in the caliper body (100) at the other end of the main brake cylinder hole (120) along the axis of the main brake cylinder hole (120), the inner diameter of the linkage cylinder hole is smaller than that of the main brake cylinder hole (120), and one end of the linkage cylinder hole is provided with an opening communicated with the main brake cylinder hole (120);

the step piston (200) comprises a column part (210) tightly sliding in the linkage cylinder hole (130) and a step part (220) tightly sliding in the main brake cylinder hole (120), wherein the head end of the step part (220) is connected with the bottom end of the column part (210);

the brake block comprises a movable brake block (300) and a fixed brake block (400) which are oppositely arranged in the jaw (110), the fixed brake block (400) is attached to the other side of the jaw (110), and the movable brake block (300) is attached to the bottom end of the step part (220);

the main brake oil inlet hole (140) is arranged on the caliper body (100) and communicated with the main brake cylinder hole (120);

and the linkage oil inlet hole (150) is arranged on the clamp body (100) and communicated with the linkage cylinder hole (130).

2. A single piston CBS brake caliper according to claim 1, wherein: the edge of the head end of the step part (220) is provided with a chamfer (221).

3. A single piston CBS brake caliper according to claim 1, wherein: the inner wall of the other end of the main brake cylinder hole (120) is concavely provided with a first pressurizing ring groove (121), and the inner wall of the other end of the linkage cylinder hole (130) is concavely provided with a second pressurizing ring groove (131).

4. A single piston CBS brake caliper according to claim 3, wherein: the main brake oil inlet hole (140) is communicated with the first pressurizing ring groove (121).

5. A single piston CBS brake caliper according to either of claims 1 or 2, wherein: the step part (220) and the column part (210) are both cylindrical and coaxially connected, and the step surface at the head end of the step part (220) is an annular step surface.

6. A single piston CBS brake caliper according to claim 5, wherein: the outer diameter of the step portion (220) is 37-39 mm, and the outer diameter of the column portion (210) is 20-23 mm.

7. A single piston CBS brake caliper according to claim 1, wherein: the main brake cylinder hole (120) indent is equipped with first sealed annular (122), install in first sealed annular (122) and closely cup joint first sealing washer (500) of step portion (220) lateral wall, linkage cylinder hole (130) indent is equipped with second sealed annular (132), the second sealing washer (600) that closely cup joints column portion (210) lateral wall are installed to the sky in second sealed annular (132).

8. A single piston CBS brake caliper according to claim 1, wherein: the caliper body (100) is installed in a matched mode through a sliding assembly and an installation support (700), the sliding direction of the sliding assembly is parallel to the axis of a main brake cylinder hole (120), and the sliding assembly comprises a first sliding assembly and a second sliding assembly which are arranged on two sides of the caliper body (100) respectively.

9. A single piston CBS brake caliper according to claim 8, wherein: the first sliding assembly comprises a first sliding shaft (710) fixedly connected with the mounting bracket (700) and a first rubber sleeve (800) sleeved on the side wall of the first sliding shaft, and the first rubber sleeve (800) is inserted into an insertion cavity formed in one side of the clamp body (100); the second sliding assembly comprises a second sliding shaft (720) fixedly connected with the mounting bracket (700) and a second rubber sleeve (900) sleeved on the side wall of the second sliding shaft, and the second rubber sleeve (900) is inserted into the insertion hole on the other side of the clamp body (100).

10. A single piston CBS brake caliper according to claim 9, wherein: the mounting bracket (700) is arranged at the jaw (110), a first guide pin (711) and a second guide pin (721) extend from the other end of the mounting bracket (700) to the first sliding shaft (710) and the second sliding shaft (720), and limiting sliding lugs (410) which are slidably sleeved with the first guide pin (711) and the second guide pin (721) are arranged on two sides of the fixed brake pad (400); installing support (700) are equipped with dodge mouth (730) of dodging dynamic brake block (300), the both sides of dodging mouth (730) are equipped with direction breach (740) respectively, the both sides of dynamic brake block (300) are equipped with direction ear (310) of sliding fit direction breach (740) respectively.

Technical Field

The invention relates to the technical field of motor vehicle disc brake calipers, in particular to a single-piston CBS brake caliper.

Background

In view of safety, a front-rear combined brake system (CBS system) is developed as a necessary trend for various motorcycles, and the existing CBS brake calipers include a double-piston structure, a three-piston structure or even a structure with more pistons, but even if the CBS brake calipers are of the double-piston structure, the calipers have a larger volume due to the number of pistons, and for many pedal motorcycles using small-sized hubs, the CBS system is difficult to mount or even cannot be mounted, so that the application range of the CBS system is limited, and meanwhile, due to the number of pistons and the larger volume, the material cost of the calipers cannot be reduced, which is not favorable for the market competition of products.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the single-piston CBS brake caliper which is reasonable in structure, small in size, convenient to install and use for the pedal motorcycle with the small-specification wheel hub and capable of effectively reducing the production cost.

The present invention thus achieves the above objects:

a single piston CBS brake caliper comprising: a caliper body having jaws for gripping a brake disc; the main brake cylinder hole is arranged in the caliper body on one side of the jaw, and one end of the main brake cylinder hole faces to the other side of the jaw and is provided with an opening; the linkage cylinder hole is arranged in the caliper body at the other end of the main brake cylinder hole along the axis of the main brake cylinder hole, the inner diameter of the linkage cylinder hole is smaller than that of the main brake cylinder hole, and an opening communicated with the main brake cylinder hole is formed in one end of the linkage cylinder hole; the step piston comprises a column part tightly sliding in the linkage cylinder hole and a step part tightly sliding in the main brake cylinder hole, and the head end of the step part is connected with the bottom end of the column part; the brake block comprises a movable brake block and a fixed brake block which are oppositely arranged in the jaw opening, the fixed brake block is attached to the other side of the jaw opening, and the movable brake block is attached to the bottom end of the step part; the main brake oil inlet is arranged on the caliper body and communicated with the main brake cylinder hole; and the linkage oil inlet hole is arranged on the clamp body and communicated with the linkage cylinder hole.

Preferably, the edge of the head end of the stepped part is provided with a chamfer.

Preferably, the inner wall of the other end of the main brake cylinder hole is concavely provided with a first pressurizing ring groove, and the inner wall of the other end of the linkage cylinder hole is concavely provided with a second pressurizing ring groove.

Preferably, the main brake oil inlet hole is communicated with the first booster ring groove.

Preferably, the step part and the pillar part are both cylindrical and coaxially connected, and the step surface at the head end of the step part is an annular step surface.

Preferably, the outer diameter of the step part is 37-39 mm, and the outer diameter of the pillar part is 20-23 mm.

Preferably, main brake cylinder hole indent is equipped with first sealed annular, install the first sealing washer that closely cup joints the step portion lateral wall in the first sealed annular, linkage cylinder hole indent is equipped with the sealed annular of second, the second sealing washer that closely cup joints the column portion lateral wall is equipped with in the sealed annular of second sky.

Preferably, the caliper body is installed with the mounting bracket through a sliding assembly in a matched manner, the sliding direction of the sliding assembly is parallel to the axis of the main brake cylinder hole, and the sliding assembly comprises a first sliding assembly and a second sliding assembly which are respectively arranged on two sides of the caliper body.

Preferably, the first sliding assembly comprises a first sliding shaft fixedly connected with the mounting bracket and a first rubber sleeve sleeved on the side wall of the first sliding shaft, and the first rubber sleeve is inserted into an insertion cavity formed in one side of the clamp body; the second sliding assembly comprises a second sliding shaft fixedly connected with the mounting bracket and a second rubber sleeve sleeved on the side wall of the second sliding shaft, and the second rubber sleeve is inserted into the insertion hole on the other side of the clamp body.

Preferably, the mounting bracket is arranged at the jaw, the first sliding shaft and the second sliding shaft respectively extend from the other end of the mounting bracket to form a first guide pin and a second guide pin, and the two sides of the fixed brake pad are respectively provided with a limiting sliding lug which is in sliding sleeve connection with the first guide pin and the second guide pin; the mounting bracket is provided with an avoiding opening for avoiding the dynamic brake pad, the two sides of the avoiding opening are respectively provided with a guide notch, and the two sides of the dynamic brake pad are respectively provided with a guide lug which is in sliding fit with the guide notch.

The invention has the beneficial effects that:

the single-piston CBS brake caliper is reasonable in structure, the main brake cylinder hole and the linkage cylinder hole are designed into the step-shaped cylinder holes coaxially and radially arranged in the caliper body, and the single-step piston is matched, so that the radial space in the caliper body is reasonably utilized, the size of the caliper body is reduced, the use and installation of pedal motorcycles and the like of small-specification hubs are facilitated, the applicability is high, the material of the caliper body 1/3 is effectively saved, the light weight of vehicles is facilitated, the production material cost can be effectively reduced by 40% compared with the traditional double-piston CBS caliper, and the market competitiveness is improved.

Meanwhile, the main brake oil inlet hole communicated with the main brake cylinder hole and the linkage oil inlet hole communicated with the linkage cylinder hole are communicated separately, when the main brake oil pipe and the linkage oil pipe are connected respectively, the main brake oil way and the linkage brake oil way are separated independently, even if one of the oil pipes is damaged in use to cause the oil way to fail, the CBS brake caliper can be ensured to realize a normal brake function through the other oil way, and the safety performance is improved.

Drawings

The invention is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a cross-sectional view of an angle of the present invention;

fig. 4 is a schematic cross-sectional view of another angle of the present invention.

In the above figures, 100, the caliper body, 110, the jaw, 120, the main brake cylinder hole, 121, the first booster ring groove, 122, the first sealing ring groove, 130, the linkage cylinder hole, 131, the second booster ring groove, 132, the second sealing ring groove, 140, the main brake oil inlet hole, 150, the linkage oil inlet hole, 200, the stepped piston, 210, the pillar portion, 220, the stepped portion, 221, the chamfer, 300, the dynamic brake pad, 310, the guide lug, 400, the static brake pad, 410, the limit sliding lug, 500, the first sealing ring, 600, the second sealing ring, 700, the mounting bracket, 710, the first sliding shaft, 711, the first guide pin, 720, the second sliding shaft, 721, the second guide pin, 730, the avoiding port, 740, the guide notch, 800, the first rubber sleeve, 900, the second rubber sleeve, 1000, the first exhaust screw, 1100, and the second exhaust screw.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 4, a single piston CBS brake caliper includes: a caliper body 100 having jaws 110 for gripping a brake disc; a main brake cylinder hole 120 provided in the caliper body 100 on one side of the jaw 110, and having an opening at one end facing the other side of the jaw 110; a linkage cylinder hole 130 which is provided in the caliper body 100 at the other end of the main brake cylinder hole 120 along the axis of the main brake cylinder hole 120, has an inner diameter smaller than that of the main brake cylinder hole 120, and has an opening communicating with the main brake cylinder hole 120 at one end; the step piston 200 comprises a column part 210 tightly sliding in the linkage cylinder hole 130 and a step part 220 tightly sliding in the main brake cylinder hole 120, wherein the head end of the step part 220 is connected with the bottom end of the column part 210; the brake pad comprises a movable brake pad 300 and a fixed brake pad 400 which are oppositely arranged in the jaw 110, the fixed brake pad 400 is attached to the other side of the jaw 110, and the movable brake pad 300 is attached to the bottom end of the step part 220; a main brake oil inlet hole 140 provided on the caliper body 100 and communicating with the main brake cylinder hole 120; and a linkage oil inlet hole 150 provided on the caliper body 100 and communicating with the linkage cylinder hole 130. The single-piston CBS brake caliper is reasonable in structure, the main brake cylinder hole 120 and the linkage cylinder hole 130 are designed into the step-shaped cylinder holes coaxially and radially arranged in the caliper body 100 and are matched with the single-step piston 200, the radial space in the caliper body 100 is reasonably utilized, the size of the caliper body 100 is reduced, pedal motorcycles and the like with small-specification hubs can be conveniently installed, the applicability is high, materials of the caliper body 1001/3 are effectively saved, the vehicle is convenient to achieve light weight, compared with the traditional double-piston CBS caliper, the production material cost can be effectively reduced by 40%, and the market competitiveness is improved.

Meanwhile, the main brake oil inlet hole 140 communicated with the main brake cylinder hole 120 and the linkage oil inlet hole 150 communicated with the linkage cylinder hole 130 are communicated with each other, when the main brake oil pipe and the linkage oil pipe are connected with each other, the main brake oil way and the linkage brake oil way are separated independently, even if one of the oil pipes is damaged to cause the oil way to fail in use, the CBS brake caliper can be ensured to realize a normal brake function through the other oil way, and the safety performance is improved.

As shown in fig. 2 and 3, in order to facilitate the main brake oil path or the linkage oil path to have oil pressure, the brake oil injected into the main brake cylinder hole 120 from the main brake oil inlet hole 140 or the linkage oil inlet hole 150 into the linkage cylinder hole 130 can more easily and rapidly drive the step portion 220 to be pushed out in the main brake cylinder hole 120, the edge of the head end of the step portion 220 is provided with a chamfer 221, the inner wall of the other end of the main brake cylinder hole 120 is concavely provided with a first booster ring groove 121, the inner wall of the other end of the linkage cylinder hole 130 is concavely provided with a second booster ring groove 131, the main brake oil inlet hole 140 is communicated with the first booster ring groove 121, the chamfer 221 cooperates with the first booster ring groove 121 on the inner wall of the other end of the main brake cylinder hole 120 to form a ring-shaped space capable of storing oil, so as to increase the pushing area and torque, facilitate the oil injection of the main brake oil inlet hole 140 on the bottom side of the main brake cylinder hole 120, thereby rapidly pushing the step surface of the head end of the step portion 220, and the second booster ring groove 131 cooperates with the other end of the linkage cylinder hole 130 to increase the oil storage space between the column portion 210 and the other end of the linkage cylinder hole 130, enabling the post portion 210 to be pushed more quickly.

As shown in fig. 2 and 3, the step portion 220 and the pillar portion 210 are both cylindrical and coaxially connected, and the step surface at the head end of the step portion 220 is an annular step surface, so that when the main brake oil path or the linkage brake oil path respectively works, the head end of the pillar portion 210 or the head end of the step portion 220 of the step piston 200 is stably and uniformly stressed, the step piston 200 can be smoothly and powerfully pushed out in a sliding manner, the occurrence of oil leakage caused by the abrasion between the side wall and the caliper body 100 when the stress is uneven is avoided, and the service life of the caliper is effectively prolonged.

In order to ensure that the main brake oil path can have the brake force for braking the brake disc when the emergency brake is performed under the condition of the same oil pressure, and simultaneously avoid the occurrence of wheel slip caused by the locking of the wheel during the braking due to the overlarge brake force of the CBS brake caliper during the normal linkage brake, the outer diameter of the step part 220 is 37-39 mm, in the embodiment, the outer diameter is preferably 38mm, the outer diameter of the column part 210 is 20-23 mm, in the embodiment, the outer diameter is preferably 22mm, the area of the step surface of the step part 220 is about 2 times of the area of the head end surface of the column part 210, the step piston 200 can drive the brake pad 300 to apply the brake force of about 300n to the brake disc through the step part 220 during the emergency brake, the brake disc and the wheel are braked, and in the normal linkage brake, the step piston 200 can drive the brake pad 300 to apply the brake disc with the brake force of about 250n through the column part 210 during the normal linkage brake, and the maximum brake force is realized before the critical point of the brake disc is braked, the locking of the wheels is avoided, and the safety performance is improved.

As shown in fig. 2 to 4, in order to enhance the sealing performance between the stepped piston 200 and the caliper body 100 and avoid oil leakage caused by friction during long-term use, a first sealing ring groove 122 is concavely disposed in the main brake cylinder hole 120, a first sealing ring 500 tightly sleeved on the sidewall of the stepped portion 220 is mounted in the first sealing ring groove 122, a second sealing ring groove 132 is concavely disposed in the linkage cylinder hole 130, and a second sealing ring 600 tightly sleeved on the sidewall of the pillar portion 210 is naturally mounted in the second sealing ring groove 132.

As shown in fig. 1 to 4, the caliper body 100 is installed in cooperation with the mounting bracket 700 through a sliding assembly, the sliding direction of the sliding assembly is parallel to the axis of the main brake cylinder hole 120, the sliding assembly includes a first sliding assembly and a second sliding assembly respectively disposed on two sides of the caliper body 100, the first sliding assembly includes a first sliding shaft 710 fixedly connected with the mounting bracket 700 and a first rubber sleeve 800 sleeved on a side wall thereof, and the first rubber sleeve 800 is inserted into an insertion cavity formed in one side of the caliper body 100; the second sliding assembly comprises a second sliding shaft 720 fixedly connected with the mounting bracket 700 and a second rubber sleeve 900 sleeved on the side wall of the second sliding shaft, and the second rubber sleeve 900 is inserted into the insertion hole on the other side of the caliper body 100, so that when the CBS brake caliper works, the position is finely adjusted along the sliding direction of the first sliding assembly and the second sliding assembly according to the position of the brake disc, and the CBS brake caliper is prevented from being clamped and fixed with the mounting bracket 700 in a hard connection manner, and the brake work is carried out, so that the brake disc is easily deformed.

As shown in fig. 1, 2 and 4, in order to guide the moving direction of the brake pad 300 and the fixed brake pad 400 and avoid falling off from the CBS brake caliper during use, the mounting bracket 700 is disposed at the jaw 110, a first guide pin 711 and a second guide pin 721 extend from the other end of the mounting bracket 700 respectively on the first sliding shaft 710 and the second sliding shaft 720, and the two sides of the fixed brake pad 400 are respectively provided with a limiting sliding lug 410 slidably sleeved with the first guide pin 711 and the second guide pin 721; the mounting bracket 700 is provided with an avoiding opening 730 avoiding the dynamic brake pad 300, two sides of the avoiding opening 730 are respectively provided with a guide notch 740, and two sides of the dynamic brake pad 300 are respectively provided with a guide lug 310 in sliding fit with the guide notch 740.

As shown in fig. 1 to 4, in order to facilitate the air discharge from the main brake cylinder hole 120 and the linkage cylinder hole 130 and ensure the braking performance of the brake caliper, the caliper body 100 is respectively provided with a first exhaust hole and a second exhaust hole, the first exhaust hole communicates with the inner top of the other end of the main brake cylinder hole 120 when the brake caliper is installed and is internally screwed with a first exhaust screw 1000, the second exhaust hole communicates with the inner top of the other end of the linkage cylinder hole 130 when the brake caliper is installed and is internally screwed with a second exhaust screw 1100.