Brake caliper assembly and vehicle with same

Abstract

The brake caliper assembly comprises a caliper body, a brake caliper support and a friction plate assembly, the caliper body and the friction plate assembly are both arranged on the brake caliper support, a cylinder hole is formed in one side of the caliper body, a piston used for pushing a friction plate is arranged in the cylinder hole, and a rectangular sealing ring is arranged between the inner wall of the cylinder body and the outer edge of the piston. And an oil inlet and a deflation assembly are arranged on the caliper body corresponding to the cylinder hole. A traditional piston return spring is omitted and is realized through deformation of the rectangular sealing ring, so that the self-adjusting range is large; a rectangular sealing ring movable structure is adopted to control a gap, the total pump displacement required during braking is reduced, the total pump stroke and the cylinder diameter are reduced, the lightweight design is adopted, the pedal force is reduced, and the comfort level is improved; the mounting bracket and the guide pin are designed to be in free clearance fit, and the guide pin and the positioning pin are provided with dust covers, so that the sliding resistance performance, the dust prevention function and the convenient mounting function of integral sliding are improved, abrasion is reduced, and integral movement is more flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of braking, in particular to a brake caliper assembly and a vehicle having the same. Background Art

[0002] At present, hydraulic disc brake calipers used in agricultural machinery and other vehicles, especially those with Y-shaped sealing structures, do not have the function of self-adjusting the clearance. Due to the influence of the working environment, a large amount of crop dust and soil will enter between the two friction plates and the brake disc, directly affecting the braking effect and product life. There are two main types of brake calipers that can achieve clearance adjustment: one is manual adjustment. Due to the influence of the product's field and working environment, the clearance needs to be adjusted manually after the friction plate is worn, which is difficult to be accepted by customers; the other is a brake caliper with a self-adjusting structure, with a self-adjusting range of 0.5-2.5mm, which is also not adopted due to the influence of the total pump output displacement of the lightweight design of the vehicle.

[0003] For example, Chinese patent CN104565143A discloses an automatic adjustment brake caliper, comprising a bracket and a caliper body, wherein a first friction plate and a second friction plate are installed in the bracket, the caliper body is provided with a piston cavity, a piston is installed in the piston cavity, a return bolt is provided on the caliper body, and a compensation adjustment device is provided on the caliper body, comprising an adjustment rod, a serrated locking plate, an adjustment spring and a spring top block, a concave hole is provided on the outer side of the bottom of the piston, the head of the adjustment rod extends into the concave hole, a hole-shaped retaining ring is provided on the concave hole, a serration is provided on the tail of the adjustment rod, the serration locking plate is matched and meshed with the serration, the spring top block is fixed to the outer side of the serrated locking plate, and is connected to the serrated locking plate through the adjustment spring; the structure is complex and the adjustment range is small. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a brake caliper assembly and a vehicle having the same, so as to achieve the purpose of stable structure and large adjustment range.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A brake caliper assembly comprises a caliper body, a caliper bracket and a friction plate assembly, wherein the caliper body and the friction plate assembly are both arranged on the caliper bracket, a cylinder hole is arranged on one side of the caliper body, a piston for pushing the friction plate is arranged in the cylinder hole, a rectangular sealing ring is arranged between the inner wall of the cylinder hole and the outer edge of the piston, and an oil inlet and an air bleed assembly are arranged on the caliper body corresponding to the cylinder hole.

[0007] The cylinder hole is an inner cavity structure integrated on the caliper body and sealed at one end. A sealing groove is provided on the inner wall of the cylinder hole, and a rectangular sealing ring is arranged in the sealing groove.

[0008] The bleed component is a bleed screw. A bleed screw hole is arranged on the top of the caliper body corresponding to the cylinder hole, and the bleed screw is installed in the bleed screw hole.

[0009] Corresponding grooves are arranged on the inner wall of the cylinder hole near the opening end and the outer edge of the piston end, and a wire lock ring and a piston dust cover are arranged in the groove.

[0010] A guide pin is provided on one side of the brake caliper bracket, and the guide pin is clearance-matched with the caliper guide pin hole provided on the caliper body to realize the function of free reciprocation without jamming during movement; a positioning pin is provided on the other side of the brake caliper bracket, and the caliper body positioning pin hole provided on the caliper body cooperates with the positioning pin, and passes through the caliper body positioning pin hole to perform reciprocating motion without jamming.

[0011] The inner end of the cylinder hole is provided with a circular notch connected to the oil inlet, and the diameter of the circular notch is smaller than the diameter of the piston end.

[0012] The caliper body is provided with a through hole corresponding to the friction plate assembly, and the caliper body is provided with a caliper shield corresponding to the through hole.

[0013] The air bleed assembly is vertically arranged upwards, the oil inlet is inclinedly arranged at one side of the air bleed assembly, the air bleed screw hole is located directly above the caliper body, and the air floats upwards, which is convenient for air discharge.

[0014] The end of the guide pin hole of the caliper body is a blind hole, and an oil storage tank structure is provided on the outer edge of the guide pin to store lubricating oil, remove internal air, and prevent excessive resistance after the guide pin enters the guide pin hole.

[0015] A vehicle comprises a brake master cylinder and a brake caliper assembly, wherein an oil through hole penetrating the inner cavity of a cylinder hole is arranged inside an oil inlet, and an oil inlet rubber plug is arranged outside the oil inlet, which is connected to the master cylinder through an oil inlet hose joint.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] The brake caliper assembly has a reasonable structural design and eliminates the traditional piston return spring. After the piston moves forward through the brake fluid, the internal rectangular ring expands and deforms. After the pedal is released, the piston returns to its original position entirely by the self-reset of the rectangular sealing ring, and the self-adjustment range is large. The rectangular sealing ring active structure is used to control the gap, reduce the master cylinder displacement required during braking, reduce the master cylinder stroke and cylinder diameter, and have a lightweight design, reduce pedal force, and improve comfort. The mounting bracket and the guide pin are designed to be matched with free clearance, and the guide pin and the positioning pin are both provided with dust covers, which improve the overall sliding resistance performance, dustproof function, easy installation function, reduced wear, and more flexible overall movement. The brake lag problem is solved, the service life and driving safety are improved, and the brake caliper has a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following is a brief description of the contents and symbols in the drawings of this specification:

[0019] Figure 1 It is a partial cross-sectional schematic diagram of the brake caliper assembly of the utility model.

[0020] Figure 2 It is a schematic diagram of one side of the brake caliper assembly of the utility model.

[0021] Figure 3 For along Figure 2 EE cross-sectional view diagram.

[0022] Figure 4 For along Figure 2 Schematic diagram of the FF cross-section.

[0023] Figure 5 It is a top view schematic diagram of the brake caliper assembly of the utility model.

[0024] In the figure:

[0025] 1. Caliper body, 2. Piston, 3. Rectangular sealing ring, 4. Wire lock ring, 5. Piston dust cover, 6. Friction plate, 7. Guide plate on one side of the friction plate, 8. Guide plate on the other side of the friction plate, 9. Brake caliper bracket, 10. Bleed screw, 11. Bleed screw cap, 12. Guide pin, 13. Guide pin dust cover, 14. Locating pin, 15. Locating pin dust cover, 16. Caliper cover, 17. Spring washer, 18. Fixing bolt. DETAILED DESCRIPTION

[0026] The specific implementation of the utility model will be further explained in detail below through the description of embodiments with reference to the accompanying drawings.

[0027] like Figures 1 to 5 As shown, the brake caliper assembly includes a caliper body 1, a brake caliper bracket 9 and a friction plate assembly. The caliper body and the friction plate assembly are both arranged on the brake caliper bracket and are fixed to the vehicle through mounting holes arranged on the brake caliper bracket.

[0028] A cylinder hole is provided on one side of the caliper body 1, in which a piston 2 for pushing the friction plate is provided, a rectangular sealing ring 3 is provided between the inner wall of the cylinder hole and the outer edge of the piston, and an oil inlet and an air venting assembly are provided on the caliper body corresponding to the cylinder hole.

[0029] Preferably, the cylinder hole is an inner cavity structure integrated on the caliper body and closed at one end, which has a simple structure, is stable and reliable; a sealing groove is provided on the inner wall of the cylinder hole, and a rectangular sealing ring is provided in the sealing groove. The traditional piston return spring is omitted, and after the piston moves forward through the brake fluid, the internal rectangular ring expands and deforms. After releasing the pedal, the piston returns to its original position completely by the self-reset of the rectangular sealing ring, and the self-adjustment range is large; the rectangular sealing ring active structure is used to control the gap, reduce the master pump displacement required during braking, reduce the master pump stroke, cylinder diameter, lightweight design, reduce pedal force, and improve comfort.

[0030] The bleed assembly is a bleed screw 10, a bleed screw cap 11 is provided at the end of the bleed screw, a bleed screw hole is provided at the top of the corresponding cylinder hole on the caliper body, and the bleed screw is installed in the bleed screw hole. Further, the bleed assembly is vertically arranged upward, the oil inlet is inclined at one side of the bleed assembly, and the bleed screw hole is located directly above the caliper body, and the air floats on the principle of air buoyancy, which is convenient for discharging air.

[0031] Corresponding grooves are arranged on the inner wall of the cylinder hole near the opening end and the outer edge of the piston end, and a wire lock ring 4 and a piston dust cover 5 are arranged in the groove, so the operation is stable and reliable.

[0032] The caliper body is provided with a through hole corresponding to the friction plate assembly, and the caliper body is provided with a caliper shield 16 corresponding to the through hole. The caliper shield is a shield plate, which is fixed on the top of the caliper body through a spring washer 17 and a fixing bolt 18. There is a gap between the shield and the top surface of the caliper body, which is beneficial to the heat dissipation of the assembly; it prevents debris from entering between the two friction plates and the brake disc, thereby improving the braking effect and service life.

[0033] The inner end of the cylinder hole is provided with a circular notch connected to the oil inlet, and the diameter of the circular notch is smaller than the diameter of the piston end, so as to avoid the phenomenon of jamming and ensure stable and reliable operation.

[0034] A guide pin 12 is provided on one side of the brake caliper bracket, and the guide pin is clearance-matched with the caliper guide pin hole on the caliper body to realize the function of free reciprocation without jamming during movement, and a guide pin dust cover 13 is provided corresponding to the guide pin; a positioning pin 14 is provided on the other side of the brake caliper bracket, and the caliper body positioning pin hole on the caliper body cooperates with the positioning pin, penetrates the caliper body positioning pin hole to perform reciprocating motion without jamming, and a positioning pin dust cover 15 is provided corresponding to the positioning pin.

[0035] The end of the guide pin hole of the caliper body is a blind hole, and an oil storage tank structure is provided on the outer edge of the guide pin to store lubricating oil and remove internal air to prevent excessive resistance after the guide pin enters the guide pin hole.

[0036] The mounting bracket and the guide pin are designed to fit with free clearance, and both the guide pin and the positioning pin are provided with dust covers, which improve the overall sliding resistance performance, dustproof function, easy installation function, reduce wear, and make the overall movement more flexible; solve the brake lag problem, improve the service life and driving safety, and at the same time the brake caliper has a simple structure and low cost.

[0037] The vehicle comprises a brake master cylinder and the brake caliper assembly, wherein an oil through hole penetrating the inner cavity of the cylinder hole is arranged inside the oil inlet, and an oil inlet rubber plug is arranged outside the oil inlet, which is connected to the master cylinder through an oil inlet hose joint.

[0038] The working principle of the utility model is as follows:

[0039] 1. Press the pedal, and the brake fluid enters the oil inlet of the brake caliper through the connecting oil pipe, and then enters the inner cavity of the brake caliper from the oil inlet; 2. After the brake fluid enters the inner cavity, it generates pressure under the sealing action of the rectangular sealing ring, pushing the piston forward. According to the principle of air buoyancy, the air in the cavity is located directly above the inner cavity at this time, and is completely discharged through the bleed screw hole directly above; 3. The forward movement of the piston pushes the dynamic friction plate forward so that the friction plate fits the inner side of the brake disc. Under the action of the force, the brake caliper body moves backward under the premise that the bracket is fixed, so that the static friction plate at the other end fits the other end of the brake disc. ; 4. When the oil in the inner cavity of the brake caliper is filled (the two friction plates are in contact with the brake disc), the pressure in the inner cavity rises, and the two friction plates hold the brake disc tightly to achieve the braking effect; 5. Release the pedal to release the pressure. Under the automatic reset function of the rectangular circle, the piston returns to its position, and the excess brake fluid in the inner cavity of the caliper body is returned to the brake oil pot through the oil pipe. Under the automatic reset function of the rectangular circle, the friction plate is pushed back to the end face of the piston and returns to the initial position; 6. During the entire movement, the iron shell protective cover above the caliper body plays a protective role to prevent the entry of impurities such as crop dust and soil.

[0040] The technology of the utility model is used in the field of agricultural machinery. It has no piston return spring. After the piston moves forward through the brake fluid, the internal rectangular ring expands and deforms. After the pedal is released, the piston returns to its original position completely by the self-reset of the rectangular sealing ring. The return amount is about 0.3mm. As the friction plate continues to wear, the gap between the friction plate and the brake disc is always kept at this size, thereby realizing large-scale self-adjustment. The utility model has a simple structure and stable and reliable operation.

[0041] The preferred specific embodiments of the present utility model are:

[0042] like Figures 1 to 5 As shown, the brake caliper assembly includes a caliper body and a brake caliper bracket. The caliper body is provided with a bleed screw hole, a master cylinder hole and an oil inlet hole. The bleed screw hole and the oil inlet hole are connected at an angle of 15°. The bracket is provided with a threaded hole for mounting with a guide pin and a threaded hole for mounting with the whole vehicle.

[0043] There are guide pin holes, guide pin dust cover slots and positioning pin holes on both sides of the caliper body; there are bleed screw holes and bleed screws on the caliper body. The bleed screw holes are located just above the caliper body. The air floats up and it is convenient to discharge the air; there is a threaded oil inlet on the caliper body. There is an oil hole penetrating the inner cavity inside the oil inlet, and a rubber plug is provided on the outside of the oil inlet, which is connected to the master pump through an oil inlet hose joint;

[0044] A rectangular groove is provided in the main cylinder hole of the caliper body, and the rectangular groove cooperates with a rectangular sealing ring and a rectangular piston. The rectangular piston is pushed by oil pressure, and the piston pushes the friction plate forward to realize the braking function. After the pressure is released, the piston retreats a small gap by virtue of the self-resetting function of the rectangular sealing ring, thereby realizing the function of controlling the gap between the friction plate and the brake disc and improving the braking performance. The friction plate assembly includes a friction plate 6 and a guide plate structure. The guide plate structure is a guide plate 7 on one side of the friction plate and a guide plate 8 on the other side of the friction plate that are relatively arranged, and the operation is stable and reliable.

[0045] The guide pin on one side of the brake caliper bracket is matched with the guide pin hole of the caliper body to realize the function of free reciprocation without jamming during movement. The guide pin is provided with a dust cover installation groove to cooperate with the dust cover. The caliper body positioning pin hole on the other side is fixedly connected to the bracket through the positioning pin, and penetrates the caliper body positioning pin hole to make reciprocating motion without jamming. The positioning pin and the caliper body positioning pin are directly provided with dust covers;

[0046] The end of the guide pin hole of the caliper body is a blind hole, so the outer diameter of the guide pin is divided into three oil storage grooves, which store lubricating oil and remove internal air to prevent excessive resistance after the guide pin enters the guide pin hole;

[0047] The pliers body is provided with a threaded hole for an iron shell protective cover, which is used in conjunction with the protective cover through two fixing bolts and spring washers.

[0048] The above is only an explanation of the preferred embodiments of the present invention. The above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0049] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A brake caliper assembly, comprising a caliper body, a brake caliper bracket and a friction plate assembly, wherein the caliper body and the friction plate assembly are both arranged on the brake caliper bracket, and characterized in that: A cylinder hole is provided on one side of the caliper body, a piston for pushing the friction plate is provided in the cylinder hole, a rectangular sealing ring is provided between the inner wall of the cylinder hole and the outer edge of the piston, and an oil inlet and an air release component are provided on the caliper body corresponding to the cylinder hole.

2. The brake caliper assembly according to claim 1, characterized in that: The cylinder hole is an inner cavity structure integrated on the caliper body and sealed at one end. A sealing groove is provided on the inner wall of the cylinder hole, and a rectangular sealing ring is arranged in the sealing groove.

3. The brake caliper assembly according to claim 1, characterized in that: The bleed component is a bleed screw. A bleed screw hole is arranged on the top of the caliper body corresponding to the cylinder hole, and the bleed screw is installed in the bleed screw hole.

4. The brake caliper assembly according to claim 1, characterized in that: Corresponding grooves are arranged on the inner wall of the cylinder hole near the opening end and the outer edge of the piston end, and a wire lock ring and a piston dust cover are arranged in the groove.

5. The brake caliper assembly according to claim 1, characterized in that: A guide pin is provided on one side of the brake caliper bracket, and the guide pin is clearance-matched with the caliper guide pin hole provided on the caliper body to realize the function of free reciprocation without jamming during movement; a positioning pin is provided on the other side of the brake caliper bracket, and the caliper body positioning pin hole provided on the caliper body cooperates with the positioning pin, and passes through the caliper body positioning pin hole to perform reciprocating motion without jamming.

6. The brake caliper assembly according to claim 1, characterized in that: The inner end of the cylinder hole is provided with a circular notch connected to the oil inlet, and the diameter of the circular notch is smaller than the diameter of the piston end.

7. The brake caliper assembly according to claim 1, characterized in that: The caliper body is provided with a through hole corresponding to the friction plate assembly, and the caliper body is provided with a caliper shield corresponding to the through hole.

8. The brake caliper assembly according to claim 3, characterized in that: The air bleed assembly is vertically arranged upwards, the oil inlet is inclinedly arranged at one side of the air bleed assembly, the air bleed screw hole is located directly above the caliper body, and the air floats upwards, which is convenient for air discharge.

9. The brake caliper assembly according to claim 5, characterized in that: The end of the guide pin hole of the caliper body is a blind hole, and an oil storage tank structure is provided on the outer edge of the guide pin to store lubricating oil, remove internal air, and prevent excessive resistance after the guide pin enters the guide pin hole.

10. A vehicle, comprising a brake master cylinder, characterized in that: It also includes a brake caliper assembly as described in any one of claims 1 to 9, wherein the oil inlet is provided with an oil hole penetrating the inner cavity of the cylinder hole, and the oil inlet rubber plug is provided on the outside, which is connected to the master cylinder through an oil inlet hose connector.

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