CN211820494U - Front brake caliper piston with buffering effect - Google Patents

Abstract

The utility model discloses a preceding braking pincers piston with buffering effect belongs to car braking system technical field, including the piston body, the piston body has one end open-ended piston chamber, annular positioning groove has been seted up on the outer wall of piston body, the one end that piston chamber port was kept away from to the piston body is provided with spacing arch, there is the cushion sleeve who sets up along its axial direction sliding seal in the piston chamber, the link of calliper sets up in cushion sleeve's cavity, the bottom in piston chamber still is provided with the fore-set that the cushion sleeve continues the removal after one section distance of cushion sleeve to piston intracavity portion removal, the fore-set is just still being provided with rubber buffer to cushion sleeve's one end. When braking, when braking piece and brake disc contact gradually, can slow movement in the piston cavity behind the buffering sleeve atress, the effectual wearing and tearing of avoiding braking piece and brake disc hard contact to cause have protected braking piece and brake disc, have prolonged life.

Description

Front brake caliper piston with buffering effect

Technical Field

The utility model belongs to the technical field of automobile brake system, especially, relate to a preceding braking pincers piston with buffering effect.

Background

Hydraulic brake calipers generally include a caliper body, a brake pad, and a piston that urges the brake pad against a brake disc to effect braking. When the brake pad is driven by the piston to gradually approach the brake disc, the brake pad is rigidly combined with the brake disc at the moment of rigid contact, at the moment, the brake pad is subjected to the strongest vibration, so that the local abrasion of the brake pad is serious easily, the surface combination is insufficient when the brake pad and the brake disc are combined, more and larger abrasion is caused in the past, the brake performance is influenced, and the service life of a brake system and the driving safety are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the technical problem who exists, provide a preceding braking pincers piston with buffering effect, make the braking piece and the soft contact of realizing of the twinkling of an eye of brake disc contact, make the two combine more level and smooth and easy, avoided leading to the fact wearing and tearing because of hard contact.

The purpose of the utility model is realized like this: the piston comprises a piston body, wherein the piston body is provided with a piston cavity with an opening at one end, an annular positioning groove which is radially and inwards formed in the outer wall of the piston body and is close to a port of the piston cavity, a limiting bulge is arranged at one end, away from the port of the piston cavity, of the piston body, a buffering sleeve which is arranged in a sliding and sealing mode along the axial direction of the piston cavity is arranged in the piston cavity, a cavity in the buffering sleeve is located at the port of the piston cavity, the connecting end of a caliper is arranged in the cavity of the buffering sleeve, a jacking column which limits the buffering sleeve to continue to move after the buffering sleeve moves for a certain distance towards the interior of the piston cavity is further arranged at the bottom of the piston cavity, and a rubber buffer pad is arranged at one end, opposite to the buffering sleeve, of the jacking column.

By adopting the technical scheme, after the caliper body is arranged in the buffer sleeve, when the brake pad is gradually contacted with the brake disc during braking, the buffer sleeve is slowly moved into the piston cavity after being stressed and compresses air in the piston cavity, so that the force of the brake pad is removed, the tightness of the combination between the brake pad and the piston cavity is timely adjusted, the brake pad is further helped to smoothly pass through the previous unstable period, the abrasion caused by hard contact between the brake pad and the brake disc is effectively avoided, the brake pad and the brake disc are protected, and the service life is prolonged; when the braking force is increased or the brake is suddenly applied, the buffer sleeve is tightly propped against the support pillar at the moment, so that the brake pad tightly clasps the brake disc; in order to prevent the buffer sleeve and the top column from being worn easily after the buffer sleeve is tightly contacted with the top column for a long time, a rubber buffer pad is arranged on the top column to protect the buffer sleeve and the top column.

The utility model discloses further set up to: buffer sleeve outer wall with be provided with the sealing member between the piston chamber inner wall, there is the radial outside mounting groove of seting up on the piston chamber port inner wall, the sealing member set up in the mounting groove, the sealing member is including fixed cover and inlay gasket, first gasket, second gasket and the sealed lid of locating in fixed cover in proper order, the outer wall of fixed cover with the inner wall threaded connection of mounting groove, annular spacing groove has been seted up to buffer sleeve's port outer wall, sealed lid fits with the restriction in the annular spacing groove buffer sleeve breaks away from the piston cavity, sealed outer wall with fixed cover inner wall threaded connection.

Through adopting above-mentioned technical scheme, through setting up the sealing member in order to improve the sealing performance between buffer sleeve and the piston chamber, avoid the cavity in the piston chamber to leak, and lead to the air that buffer sleeve is difficult to the compressed to reset to the normal position.

The utility model discloses further set up to: and a buffering return spring for assisting to push the buffering sleeve and enabling the port of the buffering sleeve and the port of the piston cavity to be in the same plane is arranged in the piston cavity.

Through adopting above-mentioned technical scheme, set up buffering reset spring in order to further improve buffering telescopic shock-absorbing capacity for buffering sleeve resets smoothly under compressed air's effect and buffering reset spring's elasticity effect.

The utility model has the advantages that: 1. after the caliper body is arranged in the buffer sleeve, when the brake pad is gradually contacted with the brake disc during braking, the buffer sleeve can slowly move into the piston cavity after being stressed and compress air in the piston cavity, so that the force is removed from the brake pad, the tightness of the combination between the brake pad and the brake disc is timely adjusted, the brake pad is further helped to smoothly pass through the previous unstable period, the abrasion caused by hard contact between the brake pad and the brake disc is effectively avoided, the brake pad and the brake disc are protected, and the service life is prolonged; 2. in order to avoid the abrasion of the buffer sleeve and the jacking column easily caused after the buffer sleeve is tightly contacted with the jacking column for a long time, a rubber buffer pad is arranged on the jacking column to protect the buffer sleeve and the jacking column.

Drawings

Fig. 1 is a schematic view of the internal structure of the present invention;

fig. 2 is a side view of the present invention;

FIG. 3 is an enlarged view at A in FIG. 1;

the reference numbers in the figures are: 1. a piston body; 2. a piston cavity; 3. an annular positioning groove; 4. a limiting bulge; 5. a buffer sleeve; 6. a top pillar; 61. a rubber cushion pad; 7. a seal member; 71. fixing a sleeve; 72. sealing the sheet; 73. a first gasket; 74. a second gasket; 75. a sealing cover; 8. buffering reset spring.

Detailed Description

In order to make the technical solutions in the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings:

a front brake caliper piston with a buffering effect is shown in figures 1 and 2 and comprises a piston body, wherein the piston body is provided with a piston cavity with an opening at one end, the outer wall of the piston body is provided with annular positioning grooves which are radially inwards formed and are close to the port of the piston cavity, the annular positioning grooves are used for positioning a sealing ring, and one end, far away from the port of the piston cavity, of the piston body is provided with three limiting bulges so as to avoid the situation that the piston body is too tightly contacted with the bottom of a hydraulic oil cylinder during braking and the response speed is too low during starting;

wherein, there is the buffering sleeve that sets up along its axial direction sliding seal in the piston chamber, and cavity in the buffering sleeve is in the port in piston chamber, and the link of calliper sets up in buffering telescopic cavity, and the bottom in piston chamber still is provided with the fore-set that buffering sleeve restricted the buffering sleeve to continue to move after moving a section distance to piston chamber inside, and the fore-set is just still being provided with rubber buffer to buffering telescopic one end.

After the caliper body is arranged in the buffer sleeve, when the brake pad is gradually contacted with the brake disc during braking, the buffer sleeve can slowly move into the piston cavity after being stressed and compress air in the piston cavity, so that the force is removed from the brake pad, the tightness of the combination between the brake pad and the brake disc is timely adjusted, the brake pad is further helped to smoothly pass through the previous unstable period, the abrasion caused by hard contact between the brake pad and the brake disc is effectively avoided, the brake pad and the brake disc are protected, and the service life is prolonged;

when the braking force is increased or the brake is suddenly applied, the buffer sleeve is tightly propped against the support pillar at the moment, so that the brake pad tightly clasps the brake disc; in order to prevent the buffer sleeve and the top column from being worn easily after the buffer sleeve is tightly contacted with the top column for a long time, a rubber buffer pad is arranged on the top column to protect the buffer sleeve and the top column.

As shown in fig. 3, a sealing element is arranged between the outer wall of the buffer sleeve and the inner wall of the piston cavity, a mounting groove is formed in the inner wall of the port of the piston cavity, the mounting groove is radially and outwards formed, the sealing element is arranged in the mounting groove and comprises a fixed sleeve, and a sealing sheet, a first gasket, a second gasket and a sealing cover which are sequentially embedded in the fixed sleeve, the outer wall of the fixed sleeve is in threaded connection with the inner wall of the mounting groove, an annular limiting groove is formed in the outer wall of the port of the buffer sleeve, the sealing cover is covered in the annular limiting groove to limit the buffer sleeve to be separated.

Through setting up the sealing member in order to improve the sealing performance between buffer sleeve and the piston chamber, avoid the cavity in the piston chamber to leak, and lead to buffer sleeve to be difficult to the compressed air and reset to the normal position.

As shown in fig. 1, a buffer return spring for assisting in pushing the buffer sleeve and making the port of the buffer sleeve and the port of the piston chamber in the same plane is arranged in the piston chamber.

The buffering sleeve barrel has the advantages that the buffering performance of the buffering sleeve barrel is further improved by arranging the buffering return spring, so that the buffering sleeve barrel can smoothly reset under the action of compressed air and the elastic force of the buffering return spring.

The above embodiments are only preferred embodiments of the present invention, not all embodiments, and other embodiments obtained based on the above embodiments by those skilled in the art without any creative work shall fall within the protection scope of the present invention, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (3)

1. The utility model provides a preceding brake caliper piston with buffering effect, includes piston body (1), piston body (1) has one end open-ended piston chamber (2), have radially inwards set up on the outer wall of piston body (1) and be close to annular positioning groove (3) of piston chamber (2) port, piston body (1) is kept away from the one end of piston chamber (2) port is provided with spacing arch (4), its characterized in that: there is buffer sleeve (5) that sets up along its axial direction sliding seal in piston chamber (2), cavity in buffer sleeve (5) is in the port of piston chamber (2), the link of calliper set up in the cavity of buffer sleeve (5), the bottom of piston chamber (2) still is provided with buffer sleeve (5) to restrict behind piston chamber (2) inside removal one section distance buffer sleeve (5) continue the fore-set (6) that remove, fore-set (6) are right the one end of buffer sleeve (5) still is provided with rubber buffer pad (61).

2. A front brake caliper piston with a cushioning effect according to claim 1, wherein: a sealing element (7) is arranged between the outer wall of the buffer sleeve (5) and the inner wall of the piston cavity (2), an installation groove which is radially and outwards opened is arranged on the inner wall of the port of the piston cavity (2), the sealing element (7) is arranged in the installation groove, the sealing element (7) comprises a fixed sleeve (71), and a sealing sheet (72), a first gasket (73), a second gasket (74) and a sealing cover (75) which are sequentially embedded in the fixed sleeve (71), the outer wall of the fixed sleeve (71) is in threaded connection with the inner wall of the mounting groove, the outer wall of the port of the buffer sleeve (5) is provided with an annular limiting groove, the sealing cover (75) covers the annular limiting groove to limit the buffer sleeve (5) to be separated from the piston cavity (2), the outer wall of the sealing cover (75) is in threaded connection with the inner wall of the fixing sleeve (71).

3. A front brake caliper piston having a cushioning effect according to claim 1 or 2, characterized in that: and a buffer return spring (8) which is used for assisting to push the buffer sleeve (5) and enables the port of the buffer sleeve and the port of the piston cavity (2) to be in the same plane is arranged in the piston cavity (2).

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