CN215567551U

CN215567551U - Structure improved automobile caliper cylinder

Info

Publication number: CN215567551U
Application number: CN202122210485.5U
Authority: CN
Inventors: 陈志友; 诸葛小香
Original assignee: Wenling Nanhai Electrical Co ltd
Current assignee: Wenling Nanhai Electrical Co ltd
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2022-01-18
Anticipated expiration: 2031-09-13

Abstract

The utility model provides an automobile caliper cylinder with an improved structure, and belongs to the field of automobile accessories. It has solved the unstable problem of current calliper structure. The automobile caliper cylinder body with the improved structure comprises a body with a piston cavity, wherein an oil inlet hole axially penetrates through the bottom wall of the piston cavity, a piston sleeve matched with the piston cavity is embedded in the piston cavity in a clamping manner, one end of the piston sleeve is pressed on the bottom wall of the piston cavity, an annular sealing element is fixed on the inner side of the other end of the piston sleeve, a pressing ring is sleeved outside the piston sleeve, the pressing ring is positioned between the annular sealing element and the oil inlet hole, and the pressing ring is fixedly connected with the body; the compression ring inside wall and the piston sleeve outside wall are attached, an annular clamping groove coaxial with the piston sleeve is formed in the piston sleeve outside wall, an annular buckle matched with the annular clamping groove is formed in the compression ring inner wall in a corresponding mode, and the annular buckle is clamped and embedded in the annular clamping groove. This construction improvement's car calliper cylinder body stable in structure.

Description

Structure improved automobile caliper cylinder

Technical Field

The utility model belongs to the field of automobile accessories, and relates to an automobile caliper cylinder body, in particular to an automobile caliper cylinder body with an improved structure.

Background

The automobile caliper disc brake mostly uses brake calipers, and different brake cylinder diameters need to be matched according to different vehicle parameters when the automobile caliper disc brake is used. At present, the parameters of the whole automobile of most automobiles are different, so that the brake cylinder diameter of the automobile brake caliper is different, and the automobile brake caliper has more and more specifications, is inconvenient to manufacture and has high cost.

In view of the above problems, the shortcomings have been recognized and improved, such as an anti-dragging structure of an automobile brake caliper (application number: 2020206400070) disclosed in the chinese patent library, which comprises a brake caliper body, wherein a cylinder hole is opened on the brake caliper body, and the brake caliper body is further provided with a brake jaw extending along the axis of the cylinder hole; the downthehole interference fit of jar is pressed with the piston cover of cylinder, the step annular has been seted up on the inner wall of piston cover, the step annular comprises a big footpath annular and a path annular that the cross-section is the rectangle, the embedded rubber seal who is equipped with the cross-section and corresponds with it of big footpath annular, the embedded phenolic resin PF ring that is equipped with the cross-section and corresponds with it of path annular, the inboard edge of the terminal surface that phenolic resin PF ring and rubber seal pasted mutually still is equipped with the chamfer.

In above-mentioned calliper, the piston bush adopts interference fit assembly in the jar hole, because there are various shakes in car operational environment, when having great machining error, there is the aversion risk in the piston bush, has the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the prior art and provides a structurally improved automobile caliper cylinder body with stable structure.

The purpose of the utility model can be realized by the following technical scheme: the automobile caliper cylinder body with the improved structure comprises a body with a piston cavity, wherein an oil inlet hole axially penetrates through the bottom wall of the piston cavity, a piston sleeve matched with the piston cavity is embedded in the piston cavity in a clamping manner, one end of the piston sleeve is pressed on the bottom wall of the piston cavity, and an annular sealing piece is fixed on the inner side of the other end of the piston sleeve; the compression ring inside wall and the piston sleeve outside wall are attached, an annular clamping groove coaxial with the piston sleeve is formed in the piston sleeve outside wall, an annular buckle matched with the annular clamping groove is formed in the compression ring inner wall in a corresponding mode, and the annular buckle is clamped and embedded in the annular clamping groove.

The compression ring and the piston sleeve fixedly connected with the body are connected in a matched mode through the annular buckle and the annular clamping groove, the compression ring is pressed on the bottom wall of the piston cavity, the compression ring is effectively limited to move in the axial direction, the compression ring is enabled to be stable and limited in the piston cavity, and the structure is stable.

In the automobile caliper cylinder body with the improved structure, the inner wall of the piston cavity is provided with an annular surface for the end surface of the pressure ring to abut against, the annular surface is coaxial with the piston cavity, and the annular surface is positioned between the pressure ring and the oil inlet hole. The annular surface is used for supporting the limiting compression ring, so that the compression ring is conveniently connected with the body.

In the automobile caliper cylinder body with the improved structure, the outer side wall of the pressing ring is a first conical surface, the first conical surface is gradually reduced along the radial direction of the oil inlet hole, a second conical surface matched with the first conical surface is arranged on the inner wall of the piston cavity, and the first conical surface is attached to the second conical surface. The first conical surface and the second conical surface are matched, so that the connection strength of the compression ring and the body can be enhanced, the positioning stability of the piston sleeve is further improved, the position of the piston sleeve can be corrected to enable the piston sleeve to be accurately coaxial with the piston cavity, the installation accuracy of the piston sleeve is improved, and the working stability and the accuracy of the caliper are improved.

In the automobile caliper cylinder body with the improved structure, the compression ring is made of plastic materials, so that the compression ring can buffer partial vibration through elasticity of the compression ring, and axial limiting of the piston sleeve is stably realized.

In foretell construction improvement's car calliper cylinder body, the clamping ring forms a whole through the mode of moulding plastics and piston bush, and clamping ring and piston bush formula structure as an organic whole promptly effectively ensure both joint strength and stability.

In foretell structure improvement's car calliper cylinder body, the axial cross-section of ring groove is arc, and the fluid flows into ring groove in order to form annular buckle stably when being convenient for mould plastics.

In foretell structure improvement's car calliper cylinder body, be equipped with on the clamping ring and be the through-hole that the axial runs through, the through-hole has two at least and along clamping ring circumference equipartition, is equipped with the screw hole on the annular face, and both the same and position one-to-one of screw hole and through-hole quantity link firmly with the body through passing through the through-hole and the downthehole bolt of screw in screw thread. The compression ring is fixedly connected with the body through the matching of the bolt, the through hole and the threaded hole, and the compression ring has the advantages of simple structure and convenience in installation.

In the automobile caliper cylinder body with the improved structure, the outer side wall of the piston sleeve is also provided with an annular groove body, and the groove body is coaxial with the piston sleeve. The groove body plays a role of a stress point, and when the piston sleeve is detached, the groove body is matched with the tool to pull out the piston sleeve forcibly, so that the piston sleeve is convenient to replace.

In foretell construction improvement's car calliper cylinder body, still seted up on the piston intracavity wall and be annular mounting groove, and mounting groove and piston chamber are coaxial, are equipped with the sealing washer in the mounting groove, and the inside wall and the piston bush lateral wall of sealing washer offset to strengthen the sealed effect that forms between piston bush and the body.

In the automobile caliper cylinder body with the improved structure, the axial section of the mounting groove is L-shaped, and two end faces of the sealing ring are respectively abutted against the inner wall of the mounting groove and the pressing ring.

In foretell construction improvement's car calliper cylinder body, the sealing washer comprises annular main part and the annular seal portion of shaping on annular main part inside wall, and annular seal portion has two and distributes along the piston bush axial, and annular main part both ends face supports respectively to press on mounting groove inner wall and clamping ring, and annular seal portion inside wall and the contact of piston bush outer wall form sealedly. By adopting the design, on the premise of ensuring the sealing performance, the contact between the sealing ring and the piston sleeve can be reduced, so that the piston sleeve is easier to install.

Compared with the prior art, the automobile caliper cylinder body with the improved structure has the following advantages:

1. the compression ring and the piston sleeve fixedly connected with the body are connected in a matched mode through the annular buckle and the annular clamping groove, the compression ring is pressed on the bottom wall of the piston cavity, the compression ring is effectively limited to move in the axial direction, the compression ring is enabled to be stable and limited in the piston cavity, and the structure is stable.

2. The first conical surface and the second conical surface are matched, so that the connection strength of the compression ring and the body can be enhanced, the positioning stability of the piston sleeve is further improved, the position of the piston sleeve can be corrected to enable the piston sleeve to be accurately coaxial with the piston cavity, the installation accuracy of the piston sleeve is improved, and the working stability and the accuracy of the caliper are improved.

3. The groove body plays a role of a stress point, and when the piston sleeve is detached, the groove body is matched with the tool to pull out the piston sleeve forcibly, so that the piston sleeve is convenient to replace.

Drawings

FIG. 1 is a schematic structural diagram of an automobile caliper cylinder with an improved structure.

Fig. 2 is an enlarged schematic view of a structure at a in fig. 1.

Fig. 3 is a schematic structural view of the body.

Fig. 4 is a schematic view of the connection structure of the piston bush and the pressure ring.

Fig. 5 is a schematic structural view of the seal ring.

In the figure, 1, a body; 1a, a piston cavity; 1b, an oil inlet hole; 1c, an annular surface; 1d, a threaded hole; 1e, a second conical surface; 1f, mounting grooves; 2. a piston sleeve; 2a, a trough body; 3. an annular seal; 4. pressing a ring; 4a, an annular buckle; 4b, through holes; 4c, a first conical surface; 5. a bolt; 6. a seal ring; 6a, an annular body; 6b, an annular sealing part.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, the cylinder body of the automobile caliper with the improved structure comprises a body 1 with a piston cavity 1a, wherein an oil inlet hole 1b axially penetrates through the bottom wall of the piston cavity 1a, and in the embodiment, the oil inlet hole 1b and the piston cavity 1a are preferably arranged eccentrically.

In particular, the present invention relates to a method for producing,

as shown in fig. 2 and 4, a piston sleeve 2 matching with the piston cavity 1a in shape and size is embedded in the piston cavity 1a, the piston sleeve 2 is made of steel, and both ends of the piston sleeve 2 are open. As shown in fig. 1, one end of the piston sleeve 2 is pressed on the bottom wall of the piston cavity 1a, and an annular sealing member 3 is fixed on the inner side of the other end of the piston sleeve 2, and the type of the annular sealing member 3 can be an oil seal or a rubber ring. The piston sleeve 2 is sleeved with a pressing ring 4, the pressing ring 4 is located between the annular sealing piece 3 and the oil inlet hole 1b, and the pressing ring 4 is fixedly connected with the body 1. The shape and the size of 4 holes of clamping ring all match with piston sleeve 2, and 4 inside walls of clamping ring and 2 lateral walls of piston sleeve lean on. Set up on 2 lateral walls of piston cover with the coaxial ring groove of this piston cover 2, correspond the shaping on the 4 inner walls of clamping ring and have the annular buckle 4a that matches with ring groove, and annular buckle 4a inlay card is in ring groove to effectively restrict the clamping ring 4 and remove in the axial, make clamping ring 4 stabilize spacing in piston chamber 1a, the structure is comparatively stable.

In the present embodiment, it is preferred that,

the press ring 4 is made of plastic materials, and the press ring 4 is integrated with the piston sleeve 2 in an injection molding mode, so that the connection strength and stability of the press ring and the piston sleeve are effectively guaranteed. Further, the axial section of the annular clamping groove is arc-shaped, so that fluid can conveniently flow into the annular clamping groove to stably form the annular buckle 4a during injection molding.

The connecting mode of the pressure ring 4 and the body 1 is as follows: as shown in fig. 2, fig. 3 and fig. 4, the inner wall of the piston cavity 1a is provided with an annular surface 1c for abutting against the end surface of the pressing ring 4, the annular surface 1c is coaxial with the piston cavity 1a, and the annular surface 1c is located between the pressing ring 4 and the oil inlet hole 1b to support the limiting pressing ring 4, so that the pressing ring 4 is conveniently connected with the body 1. Be equipped with on the clamping ring 4 and be axial through's through-hole 4b, through-hole 4b has two at least and follows 4 circumference equipartitions of clamping ring, is equipped with screw hole 1d on the annular face 1c, and both the same and position one-to-one in quantity of screw hole 1d and through-hole 4b, and clamping ring 4 links firmly with body 1 through passing through-hole 4b and screw in screw hole 5 in 1d, and at this moment, 5 heads of bolt press on clamping ring 4. Preferably, the number of the through holes 4b is 2, and in this case, the number of the bolts 5 and the threaded holes 1d is 2.

Further, the outer side wall of the pressing ring 4 is a first conical surface 4c, the diameter of the first conical surface 4c is gradually reduced towards the direction of the oil inlet 1b, a second conical surface 1e matched with the first conical surface 4c is arranged on the inner wall of the piston cavity 1a, and the first conical surface 4c is attached to the second conical surface 1e, so that the connecting strength of the pressing ring 4 and the body 1 can be enhanced, the positioning stability of the piston sleeve 2 is further improved, the position of the piston sleeve 2 can be corrected to enable the piston sleeve to be accurately coaxial with the piston cavity 1a, the mounting precision of the piston sleeve 2 is improved, and the working stability and precision of the caliper are improved.

As shown in fig. 4, an annular groove body 2a is further formed on the outer side wall of the piston sleeve 2, and the groove body 2a is coaxial with the piston sleeve 2. The groove body 2a plays a role of a stress point, and when the piston sleeve is detached, the groove body 2a is matched with a tool to pull out the piston sleeve 2 forcibly, so that the piston sleeve 2 is convenient to replace.

Still seted up on the inner wall of piston chamber 1a and be annular mounting groove 1f, and mounting groove 1f and piston chamber 1a are coaxial, are equipped with sealing washer 6 in the mounting groove 1f, and the inside wall of sealing washer 6 offsets with 2 lateral walls of piston housing to strengthen the sealed effect that forms between piston housing 2 and the body 1.

Wherein the content of the first and second substances,

the axial section of the mounting groove 1f is L-shaped, and two end faces of the sealing ring 6 are respectively abutted against the inner wall of the mounting groove 1f and the pressing ring 4.

As shown in fig. 2 and 5, the sealing ring 6 is of an integral structure, and is composed of an annular main body 6a and annular sealing portions 6b formed on the inner side wall of the annular main body 6a, two annular sealing portions 6b are distributed along the axial direction of the piston sleeve 2, two end faces of the annular main body 6a are respectively pressed on the inner wall of the mounting groove 1f and the pressing ring 4, and the inner side wall of the annular sealing portion 6b is in contact with the outer wall of the piston sleeve 2 to form sealing, so that the contact between the sealing ring 6 and the piston sleeve 2 can be reduced on the premise of ensuring the sealing performance, and the piston sleeve 2 can be more easily installed.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. Automobile caliper cylinder body with improved structure, including body (1) that possesses piston chamber (1a), oil inlet (1b) has run through to the axial on the piston chamber (1a) diapire, piston chamber (1a) is embedded to have piston bush (2) rather than matching, piston bush (2) one end is pressed on piston chamber (1a) diapire, piston bush (2) other end inboard is fixed with annular sealing member (3), its characterized in that, piston bush (2) cup joints clamping ring (4), clamping ring (4) are in between annular sealing member (3) and oil inlet (1b), and clamping ring (4) link firmly with body (1); pressing ring (4) inside wall and piston sleeve (2) lateral wall paste and lean on, offer on piston sleeve (2) lateral wall with the coaxial ring groove of this piston sleeve (2), correspond the shaping on pressing ring (4) inner wall and have annular buckle (4a) that match with ring groove, and annular buckle (4a) inlay card is in ring groove.

2. The improved cylinder body of automobile caliper according to claim 1, wherein the inner wall of the piston cavity (1a) is provided with an annular surface (1c) against which the end surface of the pressure ring (4) abuts, the annular surface (1c) is coaxial with the piston cavity (1a), and the annular surface (1c) is located between the pressure ring (4) and the oil inlet (1 b).

3. The automobile caliper cylinder body with the improved structure as claimed in claim 2, wherein the outer side wall of the pressure ring (4) is a first conical surface (4c), the diameter of the first conical surface (4c) is gradually reduced towards the direction of the oil inlet hole (1b), a second conical surface (1e) matched with the first conical surface (4c) is arranged on the inner wall of the piston cavity (1a), and the first conical surface (4c) is attached to the second conical surface (1 e).

4. The improved automobile caliper cylinder according to claim 2 or 3, wherein the pressing ring (4) is made of plastic material.

5. The improved automobile caliper cylinder according to claim 4, wherein the compression ring (4) is formed integrally with the piston sleeve (2) by injection molding.

6. The improved cylinder body of automotive calipers as claimed in claim 5, wherein the axial section of the annular groove is circular arc-shaped.

7. The automobile caliper cylinder body with the improved structure as claimed in claim 5, wherein the compression ring (4) is provided with at least two through holes (4b) which axially penetrate through the compression ring (4), the through holes (4b) are uniformly distributed along the circumferential direction of the compression ring (4), the annular surface (1c) is provided with threaded holes (1d), the threaded holes (1d) and the through holes (4b) are identical in number and correspond to each other in position one to one, and the compression ring (4) is fixedly connected with the body (1) through bolts (5) which penetrate through the through holes (4b) and are screwed into the threaded holes (1 d).

8. The automobile caliper cylinder with the improved structure as claimed in claim 7, wherein an annular groove (2a) is further formed in the outer side wall of the piston sleeve (2), and the groove (2a) is coaxial with the piston sleeve (2).

9. The structure-improved automobile caliper cylinder body according to claim 2, wherein an annular mounting groove (1f) is further formed in the inner wall of the piston cavity (1a), the mounting groove (1f) is coaxial with the piston cavity (1a), a sealing ring (6) is arranged in the mounting groove (1f), and the inner side wall of the sealing ring (6) abuts against the outer side wall of the piston sleeve (2).

10. The automobile caliper cylinder body with the improved structure as claimed in claim 9, wherein the axial section of the mounting groove (1f) is "L" shaped, and two end faces of the sealing ring (6) are respectively abutted against the inner wall of the mounting groove (1f) and the pressing ring (4).