CN211951279U

CN211951279U - Indicating pin assembly and brake caliper

Info

Publication number: CN211951279U
Application number: CN202020585575.5U
Authority: CN
Inventors: 刘庆峰
Original assignee: Shenzhen Carnet Motors Technology Co ltd
Current assignee: Shenzhen Carnet Motors Technology Co ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2020-11-17
Anticipated expiration: 2030-04-17

Abstract

The application provides an indicating pin subassembly and brake caliper belongs to the brake equipment field. Wherein, the indicator pin assembly includes mounting, indicator pin and elastic component. The fixing piece is used for being installed in the calliper body, and the fixing piece has the reference surface that is used for exposing outside the calliper body. The indicating pin is movably arranged on the fixing piece and provided with an indicating end and an abutting end which are oppositely arranged, and the indicating end exceeds the reference surface. The elastic piece acts on between the indicating pin and the fixing piece, and the elastic piece is used for enabling the abutting end to abut against the brake pad. When the brake pad is gradually thinned under continuous use, the elastic force of the elastic piece can push the indicating pin to move from the direction of the indicating end to the abutting end, the part of the indicating pin exceeding the fixing piece can be gradually shortened, and a vehicle owner can accurately judge the abrasion condition of the brake pad by observing the length of the part of the indicating pin exceeding the fixing piece. When the indicating end of the indicating pin is flush with the reference surface of the fixing piece, the brake pad is indicated to be completely consumed, and the brake pad needs to be replaced.

Description

Indicating pin assembly and brake caliper

Technical Field

The application relates to the field of brake devices, in particular to an indicating pin assembly and brake calipers.

Background

The importance of the automobile brake system is self-evident, and when emergency braking is needed, whether the brake can be stopped within the shortest distance becomes the key that can not solve the accident. The brake lining is an important part of the braking system and the braking effect is affected when the brake lining becomes thinner.

Generally, the front brake pads are replaced by about thirty thousand kilometers and the rear brake pads are replaced by about eighty thousand kilometers. However, because of the different habits of each individual and the differences in the braking system of each vehicle, it is desirable that the brake pads be replaced according to the degree of wear.

However, in the conventional brake system, the degree of wear of the brake pad cannot be intuitively determined, and the timing for replacing the brake pad cannot be accurately determined.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an indicating pin subassembly and brake caliper to improve the problem that the degree of wear of brake block can't be judged directly perceivedly among the prior art.

In a first aspect, an indicator pin assembly is provided in an embodiment of the present application, and is configured to be installed between a caliper body and a brake pad, and includes a fixing member, an indicator pin, and an elastic member;

the fixing piece is used for being installed on the caliper body and is provided with a reference surface exposed outside the caliper body;

the indicating pin is movably arranged on the fixing piece and provided with an indicating end and an abutting end which are oppositely arranged, and the indicating end exceeds the reference surface;

the elastic piece acts on between the indicating pin and the fixing piece, and the elastic piece is used for enabling the abutting end to abut against the brake pad.

Among the above-mentioned technical scheme, the elastic component acts on between instruction round pin and the mounting, and after the mounting was installed on the calliper body, the instruction round pin will support all the time in the brake block under the effect of elastic component. When the brake pad is gradually thinned under continuous use, the elastic force of the elastic piece pushes the indicating pin to move from the indicating end to the abutting end, the part of the indicating pin exceeding the fixing piece (the part of the indicating pin between the indicating end and the reference surface of the fixing piece) is gradually shortened, and a vehicle owner can accurately judge the wear condition of the brake pad by observing the length of the part of the indicating pin exceeding the fixing piece. When the indicating end of the indicating pin is flush with the reference surface of the fixing piece, the brake pad is indicated to be completely consumed, and the brake pad needs to be replaced.

The indicating pin assembly provided by the embodiment of the application also has the following additional technical characteristics:

in some embodiments of the present application, the fixing member is provided with a through hole;

the indicating pin is movably inserted into the through hole.

Among the above-mentioned technical scheme, the indicator pin is movably inserted and is located in the through-hole, and the through-hole can play the guide effect, guarantees to move in the definite direction relatively the mounting under the effect of elastic component.

In some embodiments of the present application, the fixing member is provided with an external thread for screwing with the caliper body.

Among the above-mentioned technical scheme, be equipped with on the mounting and be used for the external screw thread with calliper body spiro union, this kind of structure can realize the quick installation of mounting.

In some embodiments of the present application, the through-hole comprises a cylindrical hole section and an inner hexagonal hole section coaxially arranged with the cylindrical hole section;

the outer wall of the indicating pin is in sliding fit with the hole wall of the cylindrical hole section;

one end, far away from the cylindrical hole section, of the inner hexagonal hole section penetrates through the reference surface.

Among the above-mentioned technical scheme, the cylinder hole section plays the guide effect to the index pin. When the fixing piece is installed, the fixing piece can be screwed into the threaded hole of the caliper body by means of a hexagonal wrench, so that the fixing piece can be quickly installed on the caliper body.

In some embodiments of the present application, the fixing member is a straight tube structure, and the reference surface is an end surface of one axial end of the fixing member;

the external thread starts from one axial end of the fixing piece to the other axial end of the fixing piece.

Among the above-mentioned technical scheme, the mounting is the straight tube structure, and the external screw thread on the mounting is from the beginning of the axial one end of mounting to the other end termination, and the whole section of mounting is equipped with the external screw thread promptly, and the reducible mounting of this kind of structure is installed the back on the calliper body, and the mounting extends in the part outside the calliper body.

In some embodiments of the present application, the fixture includes a first tube segment and a second tube segment;

the second pipe section is provided with a limiting end face used for abutting against the outer wall of the caliper body, one end of the first pipe section is fixed on the limiting end face, and the reference surface is arranged at one end, far away from the limiting end face, of the second pipe section;

the external threads begin at one axial end of the first pipe section and terminate at the other axial end.

Among the above-mentioned technical scheme, on first pipeline section was fixed in the spacing terminal surface of second pipeline section, the external screw thread setting was on first pipeline section, was twisting first pipeline section to the calliper body after, the spacing terminal surface of second pipeline section will support with the outer wall of calliper body at last and lean on, guarantees that the second pipeline section is located the outside of calliper body all the time, is convenient for observe.

In some embodiments of the present application, the indicator pin comprises a head portion and a shank portion connected to the head portion;

the rod part is movably inserted into the through hole, the elastic piece is sleeved on the outer side of the rod part, one end of the elastic piece abuts against the head part, and the other end of the elastic piece abuts against the fixing piece;

the end of the head part, which is far away from the rod part, is the abutting end.

Among the above-mentioned technical scheme, the outside of the pole portion of instruction round pin is located to the elastic component cover for the elastic component can be out of shape in the direction of confirming, guarantees the stability of elastic component in deformation process. Because the both ends of elastic component support in the head of mounting and instruction round pin respectively, the butt end of instruction round pin supports in the brake block back under the effect of elastic component, and the elastic component is in compression state, and at the in-process that the instruction round pin will stretch gradually along with the brake block thinization removal.

In a second aspect, embodiments of the present application provide a brake caliper, which includes a caliper body, a brake pad, and the above-mentioned indicating pin assembly;

the fixing piece is mounted on the caliper body;

the abutting end abuts against the brake pad under the action of the elastic piece.

Among the above-mentioned technical scheme, because the mounting is installed on calliper body, the butt end of instruction pin supports under the effect of elastic component and leans on in the brake block, when the brake block thickness taper under the continuous use, the elasticity of elastic component can push away the direction removal that the instruction pin from instruction end point to butt end, the part that the instruction pin surpassed the mounting (the part between the reference plane of instruction pin from instruction end to mounting) can shorten gradually, the car owner surpasss the length of the part of mounting through observing the instruction pin, then can accurately judge the wearing and tearing condition of brake block. When the indicating end of the indicating pin is flush with the reference surface of the fixing piece, the brake pad is indicated to be completely consumed, and the brake pad needs to be replaced.

In some embodiments of the present application, the direction of movement of the indicator pin relative to the fixing corresponds to the direction of movement of the brake pad relative to the caliper body.

In the technical scheme, the moving direction of the indicating pin is consistent with that of the brake pad, the worn thickness of the brake pad is the shortened length of the indicating pin, and the initial length of the part of the indicating pin exceeding the fixing piece is convenient to set.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic structural view of a brake caliper according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural view of a brake caliper according to another embodiment of the present application;

FIG. 3 is a schematic structural view of the indicator pin assembly shown in FIG. 1;

FIG. 4 is a cross-sectional view of the brake caliper shown in FIG. 1;

FIG. 5 is a schematic structural view of the fixing member shown in FIG. 3;

FIG. 6 is a schematic structural view of an indicator pin assembly according to other embodiments of the present application.

Icon: 100-brake calipers; 10-caliper body; 11-left cylinder body; 12-right cylinder body; 13-a reference plane; 14-a threaded hole; 20-brake block; 21-left brake pad; 22-right brake pad; 30-an indicator pin assembly; 31-a fixing member; 311-reference plane; 312-external threads; 313-a via; 3131-a cylindrical bore section; 3132-an internal hexagonal hole section; 314-a first pipe section; 315-a second pipe section; 3151-a limit end surface; 32-an indicator pin; 321-an indication end; 322-an abutment end; 323-head; 324-a stem portion; 33-elastic element.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is usually understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first" and "second" are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Examples

The embodiment of the application provides a brake caliper 100, which can accurately judge the abrasion condition of a brake pad 20 by arranging an indicating pin assembly 30 on a caliper body 10. The following structural drawings illustrate the specific structure of the brake caliper 100 in detail.

As shown in fig. 1, the brake caliper 100 includes a caliper body 10, a brake pad 20, and an indicating pin assembly 30, the indicating pin assembly 30 being installed between the brake caliper 100 and the brake pad 20.

Wherein, two brake pads 20 are provided, and two brake pads 20 are arranged relatively in calliper body 10 inside, and brake pad 20 movably sets up in the brake body.

The two brake pads 20 are respectively a left brake pad 21 and a right brake pad 22, the caliper body 10 has a left cylinder body 11 and a right cylinder body 12, a left piston rod (not shown in fig. 1) is arranged in the left cylinder body 11, a right piston rod (not shown in fig. 1) is arranged in the right cylinder body 12, the left piston rod is connected with the left brake pad 21, and the right piston rod is connected with the right brake pad 22. The left piston rod is used for pushing the left brake block 21 to move, and the right piston rod is used for pushing the right piston rod to move.

Illustratively, the number of the left piston rods for pushing the left brake pad 21 to move is two, and the number of the right piston rods for pushing the right brake pad 22 to move is two, i.e. the brake caliper 100 is a four-piston caliper. In other embodiments, the number of the left piston rod and the right piston rod may be other numbers, for example, as shown in fig. 2, the number of the left piston rod and the number of the right piston rod are three, that is, the brake caliper 100 is a six-piston caliper.

In actual use, the left brake pad 21 and the right brake pad 22 will be located on both sides of the brake disc after the brake caliper 100 is installed. When braking, brake oil enters the left cylinder body 11 and the right cylinder body 12 of the caliper body 10, so that the left piston rod and the right piston rod respectively push the left brake pad 21 and the right brake pad 22 to approach each other, so as to clamp a brake disc together, thereby achieving the purpose of braking. Of course, as the service life increases, both brake pads 20 will gradually wear.

It should be noted that, in a normal state (in a non-braking state), the distance between the brake pad 20 and the brake disc is always kept constant, that is, the distance between the brake pad 20 and the brake disc is not changed due to the abrasion of the brake pad 20.

Assuming that the distance between the unworn brake pad 20 and the brake disc is a, and the thickness of the brake pad 20 worn for a period of time is b, since the distance between the brake pad 20 and the brake disc remains unchanged, the distance between the brake pad 20 and the brake disc is still a, which can be regarded as b displacement of the brake pad 20 toward the brake disc on the original basis.

In this embodiment, with continued reference to fig. 1, only one of the two brake pads 20 is provided with the indicating pin assembly 30, and the wear condition of one of the brake pads 20 can be directly determined by the indicating pin assembly 30, and since the two brake pads 20 are moved synchronously, the wear conditions of the two brake pads are substantially the same. In other embodiments, both brake pads 20 may be provided with their corresponding indicator pin assemblies 30.

As shown in fig. 3, the indicating pin assembly 30 includes a fixing member 31, an indicating pin 32, and an elastic member 33. The fixing member 31 has a reference surface 311 for exposure to the outside of the caliper body 10.

The indicating pin 32 is movably disposed on the fixing member 31, the indicating pin 32 has an indicating end 321 and an abutting end 322 disposed oppositely, and the indicating end 321 exceeds the reference surface 311. The elastic member 33 acts between the indicating pin 32 and the fixing member 31, and the elastic member 33 is used for abutting the abutting end 322 against the brake pad 20.

As shown in fig. 4, after the fixing member 31 is mounted on the caliper body 10, the elastic member 33 acts between the indicating pin 32 and the fixing member 31, so that the indicating pin 32 always abuts against the brake pad 20 under the action of the elastic member 33. When the brake pad 20 becomes thinner under continuous use, the elastic force of the elastic member 33 pushes the indicator pin 32 to move from the indicator end 321 to the abutting end 322, the portion of the indicator pin 32 beyond the fixing member 31 (the portion of the indicator pin 32 from the indicator end 321 to the reference surface 311 of the fixing member 31) is gradually shortened, and the owner can accurately judge the wear condition of the brake pad 20 by observing the length of the portion of the indicator pin 32 beyond the fixing member 31. When the indicating end 321 of the indicating pin 32 is flush with the reference surface 311 of the fixing member 31, which indicates that the brake pad 20 is completely consumed, the brake pad 20 needs to be replaced.

It should be noted that after the fixing member 31 is mounted on the caliper body 10, the reference surface 311 of the fixing member 31 is exposed outside the caliper body 10, i.e. the reference surface 311 of the fixing member 31 can be seen outside the caliper body 10.

In this embodiment, the direction in which the indicating pin 32 moves relative to the fixing member 31 coincides with the direction in which the brake pad 20 moves relative to the caliper body 10. The thickness of the brake pad 20 that is worn is the shortened length of the indicating pin 32, which facilitates the setting of the initial length of the portion of the indicating pin 32 that exceeds the fixing member 31. In other embodiments, the moving direction of the indicating pin 32 may be arranged at a small angle to the moving direction of the brake pad 20.

Optionally, a through hole 313 is provided on the fixing member 31, and the indicating pin 32 is movably inserted into the through hole 313. The indicating end 321 and the abutting end 322 of the indicating pin 32 are both outside the through hole 313. The through hole 313 can play a guiding role, so that the indicating pin 32 can move in a determined direction relative to the fixing member 31 under the action of the elastic member 33, and the smoothness of the indicating pin 32 in the moving process is ensured.

As shown in fig. 5, the fixing member 31 is provided with an external thread 312 for screwing with the caliper body 10. The quick mounting of the fixing member 31 can be achieved by means of a screw connection.

With continued reference to fig. 4, the caliper body 10 is provided with a threaded hole 14, the outer wall of the caliper body 10 includes a reference surface 13, one end of the threaded hole 14 penetrates through the reference surface 13, and the other end of the threaded hole 14 penetrates through the inner wall of the caliper body 10. The fixing member 31 can be screwed into the threaded hole 14 from the outside of the caliper body 10 to accomplish the mounting of the fixing member 31.

In order to improve the firmness of the fixing member 31 after being mounted on the caliper body 10, anaerobic adhesive may be applied between the fixing member 31 and the threaded hole 14.

Further, with continued reference to fig. 5, the through hole 313 includes a cylindrical hole section 3131 and an inner hexagonal hole section 3132 coaxially arranged with the cylindrical hole section 3131, an end of the inner hexagonal hole section 3132 remote from the cylindrical hole section 3131 penetrating the reference surface 311.

After the indicating pin 32 is inserted into the through hole 313, the outer wall of the indicating pin 32 forms a sliding fit with the hole wall of the cylindrical hole section 3131. The cylindrical hole section 3131 guides the indicator pin 32. When the fixing member 31 is mounted, the fixing member 31 may be screwed into the screw hole 14 of the caliper body 10 by means of a hexagonal wrench to quickly mount the fixing member 31 on the caliper body 10.

The fixing member 31 may be in various shapes. In this embodiment, the fixing member 31 is a straight pipe structure, and the external thread 312 on the fixing member 31 starts from one end to the other end in the axial direction of the fixing member 31. That is, the fixing member 31 is provided with the external thread 312 throughout its entire length. This structure can reduce the portion of the fixing member 31 extending beyond the caliper body 10 after the fixing member 31 is mounted on the caliper body 10.

The reference surface 311 of the fixing member 31 is an end surface of one axial end of the fixing member 31, and after the fixing member 31 is mounted on the caliper body 10, the reference surface 311 may protrude slightly from the reference surface 13, or the reference surface 311 may be flush with the reference surface 13.

In other embodiments, the fixing member 31 may have other structures, for example, as shown in fig. 6, the fixing member 31 is a stepped pipe, and the fixing member 31 includes a first pipe section 314 and a second pipe section 315. The second pipe segment 315 has a limit end face 3151 for abutting against the outer wall of the caliper body 10, one end of the first pipe segment 314 is fixed to the limit end face 3151, and the reference surface 311 is arranged at one end of the second pipe segment 315 away from the limit end face 3151. External threads 312 begin at one axial end of first pipe section 314 and terminate at the other axial end. When the fixing member 31 is installed, after the first pipe section 314 is screwed into the threaded hole 14 of the caliper body 10, the limit end face 3151 of the second pipe section 315 will abut against the datum plane 13 of the outer wall of the caliper body 10, so as to ensure that the second pipe section 315 is always located outside the caliper body 10. The fixing member 31 of such a structure can be applied to a six-piston caliper as shown in fig. 2.

As can be seen from the above, in the present application, the fixing member 31 is installed on the caliper body 10 by a screw manner, in other embodiments, the fixing member 31 can also be installed by other manners, for example, the fixing member 31 is installed on the caliper body 10 by a snap-fit manner.

Further, with reference to fig. 3 and 4, the indicating pin 32 includes a head 323 and a rod 324 connected to the head 323, the rod 324 is movably inserted into the through hole 313, the elastic element 33 is sleeved outside the rod 324, one end of the elastic element 33 abuts against the head 323, and the other end of the elastic element 33 abuts against the fixing element 31. The end of the head 323 away from the stem 324 is an abutting end 322, and the end of the stem 324 away from the head 323 is an indicating end 321.

The elastic member 33 is sleeved outside the rod portion 324 of the indication pin 32, so that the elastic member 33 can be deformed in a certain direction, and the stability of the elastic member 33 in the deformation process is ensured. Since the two ends of the elastic member 33 abut against the head 323 of the indication pin 32 and the fixing member 31, respectively, after the abutting end 322 of the indication pin 32 abuts against the brake pad 20 under the action of the elastic member 33, the elastic member 33 is in a compressed state, and the elastic member 33 will gradually extend in the process that the indication pin 32 moves along with the thinning of the brake pad 20.

Wherein the head 323 and the rod 324 are coaxially arranged, the diameter of the head 323 is larger than that of the rod 324, and the diameter of the rod 324 is matched with the aperture of the cylindrical hole section 3131 of the through hole 313.

Illustratively, the elastic member 33 is a spring.

As can be seen from the above, the elastic member 33 is compressed under normal conditions, and the elastic member 33 applies a pushing force to the indicating pin 32 to make the indicating pin 32 always abut against the brake pad 20. In other embodiments, the elastic element 33 may be in a stretched state in a normal state, one end of the elastic element 33 is fixed to the indicating pin 32, the other end of the elastic element 33 is fixed to the fixing element 31, and the elastic element 33 applies a pulling force to the indicating pin 32 to make the indicating pin 32 always abut against the brake pad 20.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An indicator pin assembly for mounting between a caliper body and a brake pad, comprising:

a fixing member for mounting to the caliper body, the fixing member having a reference surface for exposure outside the caliper body;

the indicating pin is movably arranged on the fixing piece and provided with an indicating end and an abutting end which are oppositely arranged, and the indicating end exceeds the reference surface; and

and the elastic piece acts between the indicating pin and the fixing piece and is used for enabling the abutting end to abut against the brake pad.

2. The indicator pin assembly of claim 1, wherein the retainer has a through hole;

the indicating pin is movably inserted into the through hole.

3. The indicator pin assembly of claim 2, wherein the fastener has external threads for threaded engagement with the caliper body.

4. The indicator pin assembly of claim 3, wherein the through bore comprises a cylindrical bore segment and a hexagonal bore segment coaxially arranged with the cylindrical bore segment;

5. The indicator pin assembly of claim 3, wherein the fastener is a straight tube construction, and the reference surface is an end surface of one axial end of the fastener;

6. The indicator pin assembly of claim 3, wherein the fastener comprises a first tube segment and a second tube segment;

7. The indicator pin assembly of any one of claims 2-6, wherein the indicator pin comprises a head portion and a shank portion connected to the head portion;

8. A brake caliper comprising a caliper body and a brake pad, characterized in that it further comprises an indicator pin assembly according to any one of claims 1 to 7;

the fixing piece is mounted on the caliper body;

9. Brake calliper according to claim 8, wherein the direction of movement of the indicator pin relative to the fixing corresponds to the direction of movement of the brake pad relative to the calliper body.