CN210510051U

CN210510051U - Automobile brake piston with sealed lubricating structure

Info

Publication number: CN210510051U
Application number: CN201921429601.9U
Authority: CN
Inventors: 朱伟良; 蔡光兴
Original assignee: Hangzhou Carmi Auto Parts Co Ltd
Current assignee: Hangzhou Carmi Auto Parts Co Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-05-12
Anticipated expiration: 2029-08-30

Abstract

The utility model discloses an automobile brake piston with sealed lubricating structure, including the piston shell, the inboard both sides of piston shell all are provided with the piston, the oil pressure chamber has all been seted up to the inside both sides of piston shell, the piston hole with piston looks adaptation is all seted up to the inboard both sides of piston shell, two one side that the piston was kept away from mutually all is provided with protruding edge, the both sides of the inside of piston shell just are located and all set up the step hole with protruding edge looks adaptation between piston hole and the oil pressure chamber, the utility model relates to an automobile brake piston technical field. This automobile brake piston with sealed lubricating structure all has seted up the oil pressure chamber through the inside both sides of piston shell, and the piston hole with piston looks adaptation is all seted up to the inboard both sides of piston shell, and the outside of C type bullet hoop is inconsistent with the inboard of sealing washer, strengthens the sealing performance and the lubricated effect of piston, reduces the wearing and tearing of piston, improves operating stability.

Description

Automobile brake piston with sealed lubricating structure

Technical Field

The utility model relates to an automobile brake piston technical field specifically is an automobile brake piston with sealed lubricating structure.

Background

The brake device generates friction between a brake pad and a wheel drum or a disc and converts kinetic energy of a vehicle during running into heat energy to be consumed in the friction process, the principle of a brake system is to generate huge friction force and convert the kinetic energy of the vehicle into the heat energy, most of small vehicles adopt hydraulic braking at present, because liquid cannot be compressed, the power can be transmitted by almost 100 percent, the basic principle is that a driver steps on a brake pedal to apply pressure to brake oil in a brake master pump, the liquid transmits the pressure to a piston of each wheel brake caliper through a pipeline, and the piston drives the brake calipers to clamp the brake disc to generate huge friction force to decelerate the vehicle.

Among the prior art, great gap easily appears along with using wearing and tearing in the car brake piston surface, leads to the leakproofness to reduce, and the not enough reduction that leads to braking force of oil hydraulic pressure easily appears, the seepage appears even, but too inseparable cooperation then can lead to the wearing and tearing speed aggravation on piston surface.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a car brake piston with sealed lubricating structure has solved among the prior art problem that the easy wearing and tearing of car brake piston made the clearance increase.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: an automobile brake piston with a sealed lubricating structure comprises a piston shell, wherein pistons are arranged on two sides of the inner side of the piston shell, oil pressure cavities are formed in two sides of the inner part of the piston shell, piston holes matched with the pistons are formed in two sides of the inner side of the piston shell, a convex edge is arranged on one side, far away from the two pistons, stepped holes matched with the convex edge are formed in two sides of the inner part of the piston shell and located between the piston holes and the oil pressure cavities, one side of each stepped hole is communicated with the oil pressure cavities, the other side of each stepped hole is communicated with the piston holes, an annular sealing groove is formed in the surface of the convex edge, a sealing ring is arranged in the annular sealing groove, a C-shaped groove is formed in one side of the convex edge, two C-shaped grooves are formed in the C-shaped groove, and the tops of the two C-shaped grooves are, and the inside in C type groove is provided with C type bullet hoop, the outside of C type bullet hoop is inconsistent with the inboard of sealing washer.

Preferably, end seals are arranged on two sides of the inner side of the piston shell and on one side close to the two piston holes, and the inner sides of the end seals are in contact with the surface of the piston.

Preferably, one side of the piston shell is provided with an oil nozzle, one side of the oil nozzle is communicated with the oil pressure cavities, and the two oil pressure cavities are communicated through an oil passage.

Preferably, the lubricating oil channel is all seted up to the both sides at the inside top of piston shell to the bottom and the piston hole of lubricating oil channel are linked together, the top of lubricating oil channel is provided with oil plug.

Preferably, a return spring is arranged between one side of the convex edge and one side of the stepped hole on the surface of the piston, and a C-shaped seal is arranged on one side of the C-shaped groove.

Preferably, one side of the piston, which is far away from the convex edge, is provided with a limiting part, and one side of the limiting part, which is far away from the convex edge, is provided with a friction plate.

Advantageous effects

The utility model provides an automobile brake piston with sealed lubricating structure. Compared with the prior art, the method has the following beneficial effects:

(1) the automobile brake piston with the sealed lubricating structure is characterized in that oil pressure cavities are formed in two sides of the interior of a piston shell, piston holes matched with pistons are formed in two sides of the inner side of the piston shell, convex edges are arranged on one sides, far away from the two pistons, of the two sides of the interior of the piston shell and between the piston holes and the oil pressure cavities, step holes matched with the convex edges are formed in two sides of the interior of the piston shell, one side of each step hole is communicated with the oil pressure cavity, the other side of each step hole is communicated with the piston hole, an annular sealing groove is formed in the surface of each convex edge, a sealing ring is arranged in each annular sealing groove, two C-shaped grooves are formed in one side of each convex edge, the tops of the two C-shaped grooves of each C-shaped groove are communicated with the inner sides of the annular sealing grooves, a C-shaped elastic hoop is arranged in each C, the sealing performance and the lubricating effect of the piston are enhanced, the abrasion of the piston is reduced, and the operation stability is improved.

(2) The automobile brake piston with the sealing and lubricating structure has the advantages that the end seals are arranged on two sides of the inner side of the piston shell and on one side, close to two piston holes, of the piston shell, the inner sides of the end seals are in contact with the surface of the piston, the oil nozzle is arranged on one side of the piston shell, one side of the oil nozzle is communicated with the oil pressure cavities, the two oil pressure cavities are communicated through oil ducts, lubricating oil ducts are arranged on two sides of the top of the inner part of the piston shell, the bottom of each lubricating oil duct is communicated with the piston hole, the top of each lubricating oil duct is provided with the oil plug, a reset spring is arranged between one side, located on the convex edge, of the surface of the piston and one side, located on the step hole, of the C-shaped groove, the C-shaped seal is arranged on one side, away from the convex edge, of the piston, and impurities are prevented from entering the piston hole or even the oil pressure cavity, the C-shaped elastic hoop enables the sealing ring to be tightly abutted against the inner wall of the step hole, and abrasion self-compensation of the sealing ring is realized.

Drawings

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

fig. 2 is a schematic view of the internal structure of the piston housing of the present invention;

fig. 3 is a side view of the C-shaped groove structure of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 1;

fig. 5 is a partial enlarged view of the point B in fig. 1 according to the present invention.

In the figure: the piston comprises a piston shell 1, a piston 2, an oil pressure cavity 3, a convex edge 4, a stepped hole 5, an annular sealing groove 6, a sealing ring 7, a C-shaped groove 8, a C-shaped elastic hoop 9, an end seal 10, an oil nozzle 11, a lubricating oil channel 12, an oil plug 13, a return spring 14, a C-shaped seal 15, a limiting part 16, a friction plate 17 and a piston hole 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: an automobile brake piston with a sealed lubrication structure comprises a piston shell 1, wherein the device effectively enhances the sealing performance and the lubrication effect of a piston 2 through the arrangement of an end seal 10, a self-compensating seal ring 7 and a lubrication oil channel 12, reduces the abrasion of the piston and improves the operation stability, the piston 2 is arranged on both sides of the inner side of the piston shell 1, the end seal 10 is arranged on both sides of the inner side of the piston shell 1 and positioned on one side of two piston holes 18 close to each other, the inner side of the end seal 10 is contacted with the surface of the piston 2, the end seal 10 scrapes pollutants on the surface of the piston 2 when the piston 2 operates, reduces the pollution of external impurities on the surface of the piston 2, prevents the impurities from entering the piston holes 18 and even an oil pressure cavity 3, an oil nozzle 11 is arranged on one side of the piston shell 1, one side of the oil nozzle 11 is communicated with the oil pressure cavity 3, lubricating oil channels 12 are respectively arranged on two sides of the top inside the piston shell 1, the bottom of each lubricating oil channel 12 is communicated with a piston hole 18, an oil plug 13 is arranged at the top of each lubricating oil channel 12, a reset spring 14 is arranged between one side of the convex edge 4 and one side of each step hole 5 on the surface of each piston 2, a C-shaped seal 15 is arranged on one side of each C-shaped groove 8, a limiting part 16 is arranged on one side, away from the convex edge 4, of each piston 2, a friction plate 17 is arranged on one side, away from the convex edge 4, of each limiting part 16, oil pressure cavities 3 are respectively arranged on two sides inside the piston shell 1, piston holes 18 matched with the pistons 2 are respectively arranged on two sides inside the piston shell 1, convex edges 4 are respectively arranged on one sides, away from two pistons 2, step holes 5 matched with the convex edges 4 are respectively arranged on two sides inside the piston shell 1 and between the piston holes 18 and the oil pressure cavities 3, one, the other side of the stepped hole 5 is communicated with the piston hole 18, the surface of the convex edge 4 is provided with an annular sealing groove 6, a sealing ring 7 is arranged inside the annular sealing groove 6, one side of the convex edge 4 is provided with two C-shaped grooves 8, the tops of the two C-shaped grooves 8, are communicated with the inner side of the annular sealing groove 6, a C-shaped elastic hoop 9 is arranged inside the C-shaped groove 8, the outer side of the C-shaped elastic hoop 9 is abutted against the inner side of the sealing ring 7, the C-shaped elastic hoop 9 enables the sealing ring 7 to abut against the inner wall of the stepped hole 5, the sealing performance is enhanced, and meanwhile, the abrasion self-compensation of the sealing ring 7 is realized.

When the piston is used, the pressure in the oil pressure cavity 3 is changed by oil pressure to enable the piston 2 to move, the end seal 10 scrapes pollutants on the surface of the piston 2 when the piston 2 runs, pollution of external impurities to the surface of the piston 2 is reduced, impurities are prevented from entering the piston hole 18 or even the oil pressure cavity 3, the C-shaped elastic hoop 9 has outward elastic force, the sealing ring 7 is enabled to be abutted against the inner wall of the stepped hole 5, abrasion self-compensation of the sealing ring 7 is achieved while sealing performance is enhanced, lubricating oil can be filled through the lubricating oil channel 12, the lubricating oil enters the piston hole 18 through the lubricating oil channel 12, lubrication between the piston 2 and the inner wall of the piston hole 18 is achieved, and.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an automobile brake piston with sealed lubricating structure, includes piston shell (1), the both sides of piston shell (1) inboard all are provided with piston (2), its characterized in that: the oil pressure cavity (3) is respectively arranged on two sides of the inner part of the piston shell (1), the piston holes (18) matched with the pistons (2) are respectively arranged on two sides of the inner side of the piston shell (1), the convex edges (4) are respectively arranged on one sides of the two pistons (2) which are far away from each other, step holes (5) matched with the convex edges (4) are respectively arranged on two sides of the inner part of the piston shell (1) and between the piston holes (18) and the oil pressure cavity (3), one sides of the step holes (5) are communicated with the oil pressure cavity (3), the other sides of the step holes (5) are communicated with the piston holes (18), the surface of each convex edge (4) is provided with an annular sealing groove (6), a sealing ring (7) is arranged in the annular sealing groove (6), one side of each convex edge (4) is provided with a C-shaped groove (8), and the number of the C-shaped grooves (, the top of the C-shaped groove (8) and the inner side of the annular sealing groove (6) are communicated, a C-shaped elastic hoop (9) is arranged inside the C-shaped groove (8), and the outer side of the C-shaped elastic hoop (9) is abutted to the inner side of the sealing ring (7).

2. The automotive brake piston with the seal lubrication structure as claimed in claim 1, wherein: and end seals (10) are arranged on two sides of the inner side of the piston shell (1) and on one side, close to the two piston holes (18), of the two sides, and the inner sides of the end seals (10) are in contact with the surface of the piston (2).

3. The automotive brake piston with the seal lubrication structure as claimed in claim 1, wherein: one side of the piston shell (1) is provided with an oil nozzle (11), one side of the oil nozzle (11) is communicated with the oil pressure cavity (3), and the two oil pressure cavities (3) are communicated through oil ducts.

4. The automotive brake piston with the seal lubrication structure as claimed in claim 1, wherein: lubricating oil ducts (12) are formed in the two sides of the top inside the piston shell (1), the bottoms of the lubricating oil ducts (12) are communicated with the piston holes (18), and oil plugs (13) are arranged at the tops of the lubricating oil ducts (12).

5. The automotive brake piston with the seal lubrication structure as claimed in claim 1, wherein: and a return spring (14) is arranged between one side of the convex edge (4) and one side of the stepped hole (5) on the surface of the piston (2), and a C-shaped seal (15) is arranged on one side of the C-shaped groove (8).

6. The automotive brake piston with the seal lubrication structure as claimed in claim 1, wherein: one side of the piston (2) far away from the convex edge (4) is provided with a limiting part (16), and one side of the limiting part (16) far away from the convex edge (4) is provided with a friction plate (17).