Brake caliper piston

Abstract

The utility model provides a brake caliper piston, and belongs to the technical field of pistons. The problems that the brake caliper piston bears huge pressure and friction force, and leakage is prone to being caused by high temperature, high pressure and abrasion are solved. The brake caliper piston comprises a piston body, one end of the piston body is a closed end, the other end of the piston body is an open end, a plurality of sealing rings are installed on the piston body, an annular groove with a T-shaped cross section is formed in the outer wall of the piston body, a sealing assembly serving as a sealing seat is installed in the annular groove, and an elastic sealing ring matched with the annular groove is arranged on the sealing assembly. The piston has the advantage that the sealing performance of the piston is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to piston technical field, especially relate to a brake caliper piston. BACKGROUND

[0002] Piston is the heart of automobile engine, bears alternating mechanical load and thermal load, is one of the key parts of engine working condition most worst. The function of piston is to bear gas pressure, and is passed to connecting rod drive through piston pin and makes the crankshaft rotate, and the top of piston is also the component part of combustion chamber. Piston is generally divided into head, skirt and piston pin seat three parts.

[0003] Brake caliper piston bears huge pressure and friction, is easy to produce leakage phenomenon because of high temperature, high pressure and wear, leads to brake fluid leakage, brake fluid leakage not only can make brake system pressure drop, brake distance is long, also can influence brake response timeliness, serious threat traffic safety. SUMMARY

[0004] The utility model discloses a sealed brake caliper piston to solve the above problems in the prior art.

[0005] The utility model discloses a brake caliper piston, including piston main part, the one end of piston main part is closed end, the other end is open end, its characterized in that, install a plurality of sealing rings on piston main part, be located on the annular groove of piston main part outer wall and set up, the annular groove installs the sealing assembly of sealing seat, the sealing assembly has the elastic sealing ring of cooperation with annular groove, be located on the elastic sealing ring both sides and have the lug, the lug is provided with the buckle, be located in the clamping groove of annular groove, the buckle is matched with clamping groove.

[0006] In the above-mentioned brake caliper piston, a plurality of positioning sliding grooves are formed at both ends of the piston main body, and a plurality of balls for reducing friction are installed in the positioning sliding grooves.

[0007] In the above-mentioned brake caliper piston, a plurality of heat dissipation holes for heat dissipation of the piston main body are arranged on the open end in a circumferential direction, and the heat dissipation holes are uniformly distributed on the open end.

[0008] In the above-mentioned brake caliper piston, the open end is provided with an elastic connecting piece for extruding the brake block, and the elastic connecting piece is provided with an elastic block in a corrugated shape.

[0009] Compared with existing technologies, this brake caliper piston, through the precise fit between the sealing component and the annular groove and the design of the elastic sealing ring, can effectively prevent brake fluid leakage, improve the reliability and safety of the braking system, and the setting of positioning grooves and balls can reduce the frictional resistance of the piston during movement, reduce the wear of the piston and brake caliper cylinder, and extend the service life. Attached Figure Description

[0010] Figure 1 This is a cross-sectional view of the brake caliper piston.

[0011] In the diagram, 1. Piston body; 2. Sealing ring; 3. Annular groove; 4. Elastic sealing ring; 5. Protrusion; 6. Buckle; 7. Slot; 8. Positioning groove; 9. Ball bearing; 10. Heat dissipation hole; 11. Elastic connector; 12. Elastic block. Detailed Implementation

[0012] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0013] like Figure 1 As shown, this brake caliper piston includes a piston body 1, one end of which is closed and the other end is open. Several sealing rings 2 are installed on the piston body 1. An annular groove 3 with a T-shaped cross-section is formed on the outer wall of the piston body 1. A sealing assembly acting as a sealing seat is installed in the annular groove 3. The sealing assembly has an elastic sealing ring 4 that mates with the annular groove 3. Protrusions 5 are located on both sides of the elastic sealing ring 4, serving a positioning function to prevent the elastic sealing ring 4 from shifting during piston operation. A buckle 6 is provided on the protrusion 5, and a groove 7 is formed within the annular groove 3. The buckle 6 and the groove 7 are securely engaged, preventing the elastic sealing ring 4 from falling off during piston movement. The buckle 6 and the groove 7 engage to install the elastic sealing ring 4 into the annular groove 3 of the piston body 1, ensuring accurate engagement between the buckle 6 and the groove 7 and secure installation of the sealing assembly.

[0014] To elaborate further, the piston body 1 has several positioning grooves 8 at both ends of the elastic sealing ring 4. The positioning grooves 8 are equipped with balls 9 to reduce friction. The balls 9 are installed one by one into the positioning grooves 8 to ensure that the balls 9 are evenly distributed and can roll freely in the grooves, thereby reducing the friction between the piston and the housing during piston operation.

[0015] To elaborate further, the piston body 1 has several heat dissipation holes 10 arranged circumferentially at the open end for dissipating heat from the piston body 1, and the heat dissipation is evenly distributed on the open end.

[0016] To elaborate further, the open end has an elastic connector 11 for pressing the brake block. The elastic connector 11 is provided with a corrugated elastic block 12. The elastic block 12 is made of a metal material with good elasticity and can provide appropriate elastic force when the piston moves to ensure good contact between the brake block and the brake disc.

[0017] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0018] Although this document frequently uses terms such as piston body 1, sealing ring 2, annular groove 3, elastic sealing ring 4, protrusion 5, snap fastener 6, slot 7, positioning slide 8, ball bearing 9, heat dissipation hole 10, elastic connector 11, and elastic block 12, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A brake caliper piston, comprising a piston body (1), wherein one end of the piston body (1) is a closed end and the other end is an open end, characterized in that, The piston body (1) is equipped with several sealing rings (2). An annular groove (3) with a T-shaped cross-section is provided on the outer wall of the piston body (1). A sealing assembly that acts as a sealing seat is installed in the annular groove (3). The sealing assembly has an elastic sealing ring (4) that cooperates with the annular groove (3). There are protrusions (5) on both sides of the elastic sealing ring (4). A buckle (6) is provided on the protrusion (5). A slot (7) is provided in the annular groove (3). The buckle (6) cooperates with the slot (7).

2. A brake caliper piston according to claim 1, characterized in that, The piston body (1) has several positioning grooves (8) at both ends of the elastic sealing ring (4), and the positioning grooves (8) are equipped with balls (9) to reduce friction.

3. A brake caliper piston according to claim 1, characterized in that, The piston body (1) has several heat dissipation holes (10) arranged circumferentially at the open end for dissipating heat from the piston body (1), and the heat dissipation is evenly distributed on the open end.

4. A brake caliper piston according to claim 1, characterized in that, The open end has an elastic connector (11) for pressing the brake block, and the elastic connector (11) is provided with a corrugated elastic block (12).

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