CN210510053U - Piston assembly of brake caliper - Google Patents
Piston assembly of brake caliper Download PDFInfo
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- CN210510053U CN210510053U CN201921488134.7U CN201921488134U CN210510053U CN 210510053 U CN210510053 U CN 210510053U CN 201921488134 U CN201921488134 U CN 201921488134U CN 210510053 U CN210510053 U CN 210510053U
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- piston
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- recess
- piston body
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Abstract
The utility model discloses a piston assembly of braking pincers belongs to braking pincers technical field, has solved piston assembly life's problem, and its technical scheme main points are including cylinder body, piston body, sealing washer and screw rod, characterized by, the opening inner wall of cylinder body is provided with first recess, the sealing washer is installed in first recess and the laminating is on the piston body outer wall, the opening inner wall of cylinder body is provided with the second recess, be provided with the third recess on the tip outer wall of piston body, be connected with the piston dirt proof boot between second recess and the third recess, the centre of piston dirt proof boot has corrugated circuitous structure, circuitous structure is the elasticity material, has reached the effect that improves service reliability, increase of service life.
Description
Technical Field
The utility model relates to a braking pincers field, in particular, relates to a piston assembly of braking pincers.
Background
The automobile brake caliper is a main part of a disc brake, and when the automobile brake caliper is in a braking state, oil pressure acting on a piston builds certain pressure to push a friction plate to extrude a brake disc, so that the purpose of braking is achieved.
The sealing element for the automobile brake caliper is positioned between the piston and the cylinder body of the brake caliper, plays a role in sealing, controls brake fluid not to flow out of the caliper body, and ensures the pressure build-up of the brake caliper during automobile braking. If the sealing is poor, the function of controlling the hydraulic pressure is invalid, and the personal safety can be damaged.
Although the piston structure is discovered firstly to play a role of sealing protection due to the sealing ring, dust or other particle impurities are easy to enter the opening gap between the piston and the cylinder body, so that the piston is easy to generate large abrasion, after the piston assembly is used for a long time, the sealing performance of the piston assembly is reduced, oil leakage is easy to occur, and the service life is prolonged.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. In view of this, the utility model aims at providing a piston assembly of braking pincers can increase substantially piston assembly's life, has the advantage of easy access and maintenance simultaneously.
In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a piston assembly of brake caliper, includes cylinder body, piston body, sealing washer and screw rod, the opening inner wall of cylinder body is provided with first recess, the sealing washer is installed in first recess and the laminating is on the piston body outer wall, the opening inner wall of cylinder body is provided with the second recess, be provided with the third recess on the tip outer wall of piston body, be connected with the piston dirt proof boot between second recess and the third recess, the centre of piston dirt proof boot has corrugated circuitous structure, circuitous structure is the elasticity material.
As a specific aspect of the present invention, it may be preferable that: the cross-sectional structure of the circuitous structure is S-shaped.
As a specific aspect of the present invention, it may be preferable that: the first end of the piston dustproof sleeve is fastened on the piston body through a steel ring, the second end of the piston dustproof sleeve extends to the second groove and is attached to the piston body, and a convex ring is arranged on one face, attached to the piston body, of the second end.
As a specific aspect of the present invention, it may be preferable that: and the other end of the piston body is provided with an installation groove for installing the screw rod, and a channel is arranged between the installation groove and the second groove.
As a specific aspect of the present invention, it may be preferable that: the end part of the screw rod is provided with a leather cup, and the side wall of the leather cup opens and closes the channel.
The utility model discloses technical effect mainly embodies in following aspect:
1. when the piston body is matched with the cylinder body to slide, a double-sealing protection is realized through the sealing ring, the piston dustproof sleeve is added by changing the existing structure of the cylinder body and the piston body, so that the second groove and the third groove are utilized to realize fixed installation on the piston dustproof sleeve, and the piston dustproof sleeve structure has the characteristics of circuity and elasticity, so that the piston dustproof sleeve can deform along with the movement of the piston body, and can simultaneously isolate external foreign matters from entering a gap between the piston body and the cylinder body, thereby having the effects of sealing and protecting, and prolonging the service life of the piston body;
2. by utilizing the positions of the second groove and the third groove, the proportion of the connected piston dustproof sleeve is easy and reliable, and the end part of the piston dustproof sleeve is attached to the piston body, so that the piston body can be sealed;
3. the screw rod utilizes the packing cup to open and close the passageway to can adjust the atmospheric pressure that the piston dirt proof boot formed airtight space, further improve its life.
Drawings
FIG. 1 is a sectional view of the structure of the embodiment;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is an exploded view of a part of the structure in the example.
Reference numerals: 1. a cylinder body; 11. a first groove; 12. a second groove; 2. a piston body; 21. a third groove; 22. a channel; 23. mounting grooves; 3. a seal ring; 4. a screw; 5. a piston dust-proof sleeve; 51. a circuitous structure; 52. a convex ring; 501. a first end; 502. a second end; 6. steel rings; 7. and (4) a leather cup.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention so that the technical solution of the present invention can be more easily understood and grasped, and should not be construed as limiting the present invention.
Example (b):
a piston assembly of a brake caliper, as shown in FIG. 1, includes a cylinder body 1, a piston body 2, a packing 3, and a screw rod 4. The inner wall of the opening of the cylinder body 1 is provided with a first groove 11, the sealing ring 3 is arranged in the first groove 11 and attached to the outer wall of the piston body 2, and the sealing ring 3 is attached to the middle of the piston body.
Referring to fig. 1 and 2 in combination, the inner wall of the opening of the cylinder body 1 is provided with a second groove 12, the outer wall of the end part of the piston body 2 is provided with a third groove 21, and a piston dust-proof sleeve 5 is connected between the second groove 12 and the third groove 21. The piston dust-proof sleeve 5 has a corrugated winding structure 51 in the middle, and the winding structure 51 is made of an elastic material. The detour structure 51 has an "S" shaped cross-section.
The first end 501 of the piston dust-proof sleeve 5 is fastened on the piston body 2 through the steel ring 6, the second end 502 of the piston dust-proof sleeve 5 extends to the second groove 12 and is attached to the piston body 2, and a convex ring 52 is arranged on one surface of the second end 502 attached to the piston body 2. When the dustproof piston is assembled, the second end 502 can be firstly arranged in the second groove 12, then the piston is slid in from the opening position of the cylinder body 1, and then the first end 501 of the piston dustproof sleeve 5 enters the third groove 21 of the piston body 2, and finally the steel ring 6 is sleeved in the piston dustproof sleeve to enable the piston dustproof sleeve to be more tightly fixed. The circuitous structure 51 of the piston dust-proof sleeve 5 enables the piston body 2 to deform when sliding on the cylinder body 1, and the piston body 2 is always kept and protected in the deformation process, so that the service life of the piston body 2 is prolonged.
The other end of the piston body 2 is provided with an installation groove 23 for installing the screw rod 4, and a channel 22 is arranged between the installation groove 23 and the second groove 12. The end part of the screw rod 4 is provided with a leather cup 7, and the side wall of the leather cup 7 opens and closes the channel 22.
The structure of piston body 2 is the tubbiness, and inner space can supply screw rod 4 to install, and leather cup 7 then block is in the mounting groove 23 of piston body 2 in earlier sheatheeing in to screw rod 4. The screw rod 4 can move up and down and push the piston body 2, the channel 22 can be opened and closed in the pushing process, and the channel 22 can be blocked through the deformation of the leather cup 7. The cup 7 can also be changed to exclude air if the air pressure is greater. This channel 22 allows to regulate the effect of the air pressure. In addition, in another mode, the lubricating grease is filled in the channel 22 and the piston dust-proof sleeve 5 by utilizing the space, so that the lubricating effect can be further improved, the service life can be prolonged, and the aging and the abrasion of the piston body 2 can be reduced. The channel 22 is now not used for air pressure but for the flow and storage of grease.
Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.
Claims (5)
1. The piston assembly of the brake caliper comprises a cylinder body, a piston body, a sealing ring and a screw rod and is characterized in that a first groove is formed in the inner wall of an opening of the cylinder body, the sealing ring is installed in the first groove and attached to the outer wall of the piston body, a second groove is formed in the inner wall of the opening of the cylinder body, a third groove is formed in the outer wall of the end portion of the piston body, a piston dustproof sleeve is connected between the second groove and the third groove, a corrugated roundabout structure is arranged in the middle of the piston dustproof sleeve, and the roundabout structure is made of elastic materials.
2. Piston assembly of a brake caliper according to claim 1, characterized in that said winding structure has an "S" shaped cross-section.
3. Piston assembly for a brake caliper according to claim 1, characterized in that said first end of the piston boot is fastened to the piston body by means of a steel ring, and that the second end of the piston boot extends over the second recess and abuts against the piston body, and that the second end is provided with a collar abutting against one side of the piston body.
4. Piston assembly for a brake caliper according to claim 1, wherein said other end of said piston body is provided with a mounting groove for mounting a screw, said mounting groove and said second recess being provided with a passage therebetween.
5. Piston assembly for a brake caliper according to claim 4, characterized in that the end of said screw is provided with a cup, the side wall of said cup opening and closing said passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921488134.7U CN210510053U (en) | 2019-09-06 | 2019-09-06 | Piston assembly of brake caliper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921488134.7U CN210510053U (en) | 2019-09-06 | 2019-09-06 | Piston assembly of brake caliper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210510053U true CN210510053U (en) | 2020-05-12 |
Family
ID=70569642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921488134.7U Active CN210510053U (en) | 2019-09-06 | 2019-09-06 | Piston assembly of brake caliper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210510053U (en) |
-
2019
- 2019-09-06 CN CN201921488134.7U patent/CN210510053U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 317602 science and Technology Industrial Zone, Kanmen street, Taizhou, Zhejiang, Yuhuan Patentee after: Yuhuan Si'an safety equipment Co., Ltd Address before: 317602 Shuilong village, Kanmen street, Yuhuan City, Taizhou City, Zhejiang Province Patentee before: Yuhuan Si'an safety equipment Co.,Ltd. |
|
| CP03 | Change of name, title or address |