CN221299896U - Brake caliper and vehicle - Google Patents

Abstract

The utility model relates to the technical field of vehicle body structures, in particular to a brake caliper and a vehicle, and aims to improve the sealing performance between a guide pin and a protective cover to at least a certain extent by providing a sealing connection mode between the guide pin and the protective cover so as to ensure the working reliability of the brake caliper. For this purpose, the brake caliper of the present utility model comprises: a caliper bracket; a guide pin slidable relative to the caliper bracket; the protective cover is respectively connected with the guide pin and the caliper bracket; also included is a seal comprising: a first sealing portion through which the shield is sealingly connected with the guide pin; wherein the first sealing portion includes a plurality of seals disposed along an axial direction of the guide pin. By means of the provision of multiple seals, a better sealing connection between the guide pin and the protective cover can be achieved and thus better protection against, for example, detachment of the protective cover from the guide pin.

Description

Brake caliper and vehicle

Technical Field

The utility model relates to the technical field of braking of vehicles, and particularly provides a brake caliper and a vehicle.

Background

The brake calipers mainly comprise a fixed brake caliper and a floating brake caliper, wherein one structural form of the floating brake caliper is a structure containing a guide pin. In particular, the movement of the caliper body during clamping/release of the floating brake caliper is achieved by sliding of the guide pin within the guide pin bore. In the case where foreign matter such as muddy water, dust, etc., enters into the guide pin hole and adheres to the surface of the sliding portion of the guide pin, the sliding resistance of the guide pin is increased, the drag torque of the floating caliper is deteriorated due to the increase of the sliding resistance, and the deterioration of the drag torque causes occurrence of brake noise, brake chattering, and thus affects the reliability of the floating brake caliper. Therefore, it is often necessary to provide the guide pin with a protective cover to perform a sealing function against the guide pin bore to ensure operational reliability of the brake caliper incorporating the guide pin.

The reciprocating movement of the pliers body tends to cause a reduction in sealing performance, which may occur due to the disengagement of the protective cover from the guide pin, resulting in failure of the seal. To ensure the reliability of the sealing function, an increased interference of the fit is generally employed. However, since the dust cover is usually made of rubber, the aging of the dust cover is often accelerated by the excessive interference, and the sealing performance of the dust cover is seriously degraded under the condition that the aging occurs.

Disclosure of utility model

The present utility model aims to solve the above technical problems at least to a certain extent, and in particular, to improve the sealing performance between the guide pin and the shield to at least a certain extent by proposing a sealing connection manner between the guide pin and the shield, thereby ensuring the operational reliability of the brake caliper.

In a first aspect, the present utility model provides a brake caliper comprising: a caliper bracket; a guide pin slidable relative to the caliper bracket; and a protective cover connected with the guide pin and the caliper bracket, respectively, so as to accommodate a sliding space corresponding to the guide pin; the brake caliper further includes a seal portion including: a first sealing portion through which the shield is sealingly connected with the guide pin; wherein the first sealing portion includes a plurality of seals disposed along an axial direction of the guide pin.

By means of the provision of multiple seals, a better sealing connection between the guide pin and the protective cover can be achieved and thus better protection against, for example, detachment of the protective cover from the guide pin.

It will be appreciated that the number of seals, the specific configuration of each seal, the relative positional relationship between the plurality of seals, etc., may be determined by one skilled in the art based on actual requirements. Illustratively, the multi-pass seal includes two passes, one of which is an annular seal segment and the other of which is a plurality of arcuate seal segments circumferentially spaced apart.

For the brake calipers described above, in one possible embodiment, at least one of the plurality of seals comprises: a first seal structure provided to the guide pin; and a second sealing structure provided to the shield and capable of being mated with the first sealing structure; wherein the first sealing structure is a structure recessed or protruding along the radial direction of the guide pin.

By this construction, a possible design of any of the multiple seals is provided.

With respect to the brake caliper described above, in one possible embodiment, the first sealing structure or the second sealing structure is a ring-like structure or comprises a plurality of arc-like structures that enclose a ring-like structure.

With this construction, a number of possible implementations of the seal are given. Illustratively, the second seal structure is an annular groove, the second seal structure comprising a plurality of arcuate rubber lobe segments.

With the brake caliper described above, in one possible embodiment, the caliper bracket has a guide pin hole, the guide pin comprising a first portion and a second portion that is extendable into the guide pin hole, wherein the first sealing structure is provided in the first portion.

With this construction, a specific implementation of a multi-seal construction brake caliper is provided. If the first sealing structure is an annular groove distributed along the axial direction, the second sealing structure is an annular protrusion matched with the annular groove.

For the brake calipers described above, in one possible embodiment, the sealing portion comprises a second sealing portion comprising a sealing lip.

With this configuration, the sealing performance between the guide pin and the shield can be ensured more favorably by combining the passing seal lip with the multi-seal.

It will be appreciated that the configuration of the sealing lip and its relative positional relationship with the numerous seals will be readily apparent to those skilled in the art in view of the circumstances. A separate sealing lip-based seal structure is illustratively added between the two seals.

For the brake calipers described above, in one possible embodiment, the first sealing structure is a groove and the second sealing structure is a projection, the sealing lip being provided on the projection and thus being able to abut on the groove wall of the groove.

By this construction, a possible integration between the multi-seal and the sealing lip is provided. For example, the sealing lips may be provided on all or part of the plurality of grooves, and for the same groove, the sealing lips may be provided for one or both of the groove walls.

With the brake caliper described above, in one possible embodiment, the groove includes a plurality of grooves provided to the first portion in an axial direction of the guide pin, wherein the seal lip is provided on a groove near the second portion among the plurality of grooves; and alternatively the sealing lip can abut against the groove wall of the groove adjacent the second portion.

By means of this construction, a specific way of adding the sealing lip to the multi-way seal is provided.

With the brake caliper described above, in one possible embodiment, the seal includes a third seal portion comprising: a first feature provided to the caliper bracket; and a second feature disposed on the shield; the shield is sealingly connected to the caliper bracket by mating between the first feature and the second feature.

By such a construction, a possible realization of the sealing performance of the sliding space is given.

With respect to the brake calipers described above, in one possible embodiment, the second feature comprises: a first partial feature that mates with an outer wall of the caliper bracket at a location corresponding to the guide pin hole in a radial direction of the guide pin hole; and a second partial feature extending axially of the guide pin bore into an inner wall of the caliper bracket at a location corresponding to the guide pin bore.

By this construction a specific sealing connection between the caliper bracket and the guide pin is provided.

In a second aspect, the utility model provides a vehicle comprising a brake caliper according to any one of the preceding claims.

It will be appreciated that the vehicle has all of the technical effects of a brake caliper as described in any one of the preceding claims and will not be described in detail herein.

Drawings

The preferred embodiments of the present utility model will be described below by taking a double seal and adding a sealing lip to one of the seals, and referring to the accompanying drawings, in which:

FIG. 1 is a schematic structural view of a brake caliper according to one embodiment of the present utility model showing a caliper body, a caliper bracket and a guide pin;

FIG. 2 is a schematic illustration of the assembly of the guide pin in the brake caliper showing the guide pin in assembled relation to the caliper body, the caliper bracket and the shield in accordance with one embodiment of the present utility model;

FIG. 3 shows a schematic view of the assembly structure of the guide pin of the brake caliper associated with the shield in accordance with one embodiment of the present utility model showing the first/second grooves corresponding to the dual seal and the groove walls cooperating with the sealing lips;

Fig. 4 shows a schematic view of the sealing connection between the guide pin and the shield in the brake caliper according to an embodiment of the utility model, showing a first sealing portion (double seal), a second sealing portion (sealing lip), and a third sealing portion (second feature) in the seal.

List of reference numerals:

100. A floating brake caliper;

1. A caliper body;

11. a guide pin;

111. A first portion; 112. a second portion;

12. a bolt;

2. A caliper bracket;

21. Guide pin holes;

3. A protective cover;

41. A first groove; 411. a groove wall; 42. a second groove;

51. a first protrusion; 52. a second protrusion; 53. a sealing lip;

61. a first feature; 62. a second feature;

621. a first partial feature; 622. a second partial feature.

Detailed Description

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model. As in the present embodiment, the sealing portion adopts a combination of two-way sealing and a sealing lip is added to one of the two-way sealing, and it is obvious that those skilled in the art can adjust the number of ways of sealing, the degree of integration between the sealing lip and the two-way sealing, etc. according to actual needs.

It should be noted that, in the description of the present utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected, can be indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, it will be appreciated by those skilled in the art that the present utility model may be practiced without some of these specific details. In some instances, the principles of operation of brake calipers, etc., which are well known to those skilled in the art, have not been described in detail in order to facilitate a salient point of the present utility model.

Referring mainly to fig. 1, in one possible embodiment, a floating brake caliper 100 includes a caliper body 1 and a caliper bracket 2, the caliper bracket 2 is provided with a guide pin hole 21, and the caliper body 1 is provided with a guide pin 11, as in this example, the guide pin 11 is provided to the caliper body 1 by a bolt 12. The clamping (brake application)/release (brake removal) function of the floating caliper is achieved by sliding the guide pin along the guide pin hole. Wherein the guide pin 11 is provided with a shield 3 to prevent foreign matter such as muddy water, dust, etc. from entering into the guide pin hole and/or adhering to the surface of the sliding portion of the guide pin to thereby achieve sealing performance of the guide pin and thus improve operational reliability of the floating brake caliper.

With reference mainly to fig. 2 to 4, in one possible embodiment, the protective cover 3 is connected on the one hand with the outer wall of the guide pin and on the other hand with the caliper bracket in a sealing manner, so that a sealing space corresponding to the sliding movement is formed.

In one possible embodiment, the guide pin 11 comprises a first portion 111 and a second portion 112 extending from the end and insertable into the guide pin bore, wherein the shield is sealingly connected to the second portion. In this example, the manner in which the sealing connection is achieved is: the first portion 111 is provided with a first groove 41 and a second groove 42 distributed in the axial direction of the guide pin, and correspondingly, the shield 3 is provided with a first protrusion 51 and a second protrusion 52, and the sealing function is achieved by the cooperation between the first protrusion 51 and the second protrusion 52 and the first groove 41 and the second groove 42. The mating of the double seal improves the sealing performance between the shield and the guide pin and thus effectively prevents the shield from falling off the first portion of the guide pin.

In one possible embodiment, a sealing lip 53 extends on the first projection 51 adjacent to the guide pin hole 21, the sealing lip 53 being able to abut on the groove wall 411 of the first groove 41 adjacent to the guide pin hole 21. In this way, the sealing lip 53 can make the sealing of the first protrusion 51 and the first groove tighter, and thus further improve the sealing performance between the shield and the guide pin.

It is obvious that the above-mentioned two-way seal with one to-be-sealed lip is only an exemplary description, and those skilled in the art can determine the number of the sealing ways distributed along the axial direction, the structural form of each sealing way, the relative positional relationship among the sealing ways, the configuration mode of the sealing lips, and the like according to actual requirements. Such as, but not limited to, configuring the sealing lips for both the first groove and the second groove, configuring one or more sealing lips in a third seal other than the two seals, the configuration of the two seals may be the same or different, interchanging the configuration of the grooves and protrusions, etc.

In a possible embodiment, the position of the caliper bracket 2 corresponding to the end of the guide pin hole near the guide pin is provided with a first feature 61, the protective cover 4 having a second feature 62 corresponding to the feature. As in the present example, the first feature 61 is generally an annular structure with a snap-fit cross-section, and the second feature 62 is tightly wrapped around the annular structure. As a more specific example, the second feature 62 is wrapped around the annular structure in a manner that: the second feature 62 includes a first partial feature 621 and a second partial feature 622, wherein the first partial feature 621 is an annular protrusion structure that protrudes radially into an annular groove formed by the snap structure at a location corresponding to an outer wall of the annular structure, and the second partial feature 622 is a protruding section of the annular structure in cross section that protrudes into the guide pin hole at a location corresponding to an inner wall of the annular structure.

It is obvious that the sealing connection between the protective cover and the caliper bracket is only an exemplary description, and those skilled in the art can flexibly select the sealing connection according to actual requirements, such as a single-channel sealing connection, a sealing connection similar to the sealing connection between the protective cover and the guide pin, and the like.

It can be seen that in the preferred embodiment of the present utility model, the sealing performance between the guide pin and the shield is improved by the provision of the double seal, and the phenomenon that the shield is separated from the guide pin is avoided. On the basis of double-way sealing, the sealing performance between the guide pin and the protective cover is further improved by adding a sealing lip for one of the double-way sealing. The sealing connection between the combined protective cover and the caliper bracket can effectively prevent muddy water, dust and other foreign matters from entering the guide pin hole and/or adhering to the surface of the sliding part of the guide pin, thereby ensuring the cleanliness of the sliding environment of the guide pin and further ensuring the working reliability of the floating brake caliper.

Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will fall within the scope of the present utility model.

Claims (10)

1. A brake caliper, said brake caliper comprising:

a caliper bracket;

a guide pin slidable relative to the caliper bracket; and

A protective cover connected with the guide pin and the caliper bracket, respectively, so as to accommodate a sliding space corresponding to the guide pin;

The brake caliper further includes a seal portion including:

A first sealing portion through which the shield is sealingly connected with the guide pin;

Wherein the first sealing portion includes a plurality of seals disposed along an axial direction of the guide pin.

2. Brake calliper according to claim 1, wherein at least one of the plurality of seals comprises:

a first seal structure provided to the guide pin; and

The second sealing structure is arranged on the protective cover and can be matched with the first sealing structure;

Wherein the first sealing structure is a structure recessed or protruding along the radial direction of the guide pin.

3. Brake calliper according to claim 2, wherein the first sealing structure or the second sealing structure is a ring-like structure or comprises a plurality of arc-like structures surrounding a ring-like structure.

4. Brake calliper according to claim 2, wherein the calliper bracket has a guide pin hole, the guide pin comprising a first portion and a second portion which is able to extend into the guide pin hole,

Wherein the first sealing structure is disposed on the first portion.

5. Brake calliper according to claim 4, wherein the sealing comprises a second sealing portion, the sealing portion comprising a sealing lip.

6. Brake calliper according to claim 5, wherein the first sealing structure is a groove and the second sealing structure is a projection, the sealing lip being arranged on the projection and thus being able to abut onto the groove wall of the groove.

7. Brake calliper according to claim 6, wherein the recess comprises a plurality of grooves provided in the first portion in axial direction of the guide pin,

Wherein the sealing lip is disposed on a groove of the plurality of grooves adjacent to the second portion; and or (b)

The sealing lip can abut against a groove wall of the groove adjacent to the second portion.

8. Brake calliper according to claim 4, wherein the seal comprises a third seal part comprising:

a first feature provided to the caliper bracket; and

A second feature disposed on the shield;

The shield is sealingly connected to the caliper bracket by mating between the first feature and the second feature.

9. Brake calliper according to claim 8, wherein the second feature comprises:

A first partial feature that mates with an outer wall of the caliper bracket at a location corresponding to the guide pin hole in a radial direction of the guide pin hole; and

And a second part of the feature extends into the inner wall of the caliper bracket at a position corresponding to the guide pin hole along the axial direction of the guide pin hole.

10. A vehicle, characterized in that it comprises a brake caliper according to any one of claims 1 to 9.