CN218761056U - Brake caliper, electromechanical brake system and vehicle - Google Patents

Abstract

The present disclosure relates to vehicle brake systems, and more particularly to a brake caliper, an electromechanical brake system, and a vehicle. The brake caliper includes: the clamp comprises a clamp body, a sliding assembly and a driving rod; the sliding assembly is arranged on the caliper body in a sliding mode; the driving rod with the caliper body rotates to be connected, the driving rod includes connecting portion, fixed mounting has stop nut on the connecting portion, stop nut orientation sliding assembly's terminal surface with the caliper body offsets, the driving rod is used for the drive sliding assembly slides. This brake caliper, when slip subassembly slides to the release station from the braking station, the pulling force to the internal portion motion of caliper can be applyed to the actuating lever in the twinkling of an eye to the slip subassembly with the contact of the caliper body, through stop nut's setting, can provide the axial bracing power of opposite direction for the actuating lever, and this axial bracing power offsets with the pulling force that slip subassembly applyed the actuating lever, guarantees that the actuating lever does not take place the ascending drunkenness of axial.

Description

Brake caliper, electromechanical brake system and vehicle

Technical Field

The present disclosure relates to vehicle brake systems, and more particularly to a brake caliper, an electromechanical brake system, and a vehicle.

Background

An electromechanical brake system, also called EMB, uses electric energy as an energy source, and a torque motor drives brake pads to generate braking force. An electromechanical brake system (EMB) has electrical and intelligent functions such as ABS, TCS, ESP, ACC and the like, and is increasingly emphasized by technologies such as active safety, unmanned driving and the like.

When the existing electronic mechanical brake system is used for brake release, the sliding assembly generates axial tensile force on the driving rod after moving to a release station, so that the driving rod moves axially in the direction towards the inside of the caliper body, the stability and reliability of the whole brake system are influenced, and the driving rod can be separated from the output shaft of the motor, so that the brake system is paralyzed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the present disclosure provides a brake caliper, an electromechanical brake system, and a vehicle.

The present disclosure provides a brake caliper comprising: the clamp comprises a clamp body, a sliding assembly and a driving rod;

the sliding assembly is arranged on the caliper body in a sliding mode;

the driving rod with the caliper body rotates to be connected, the driving rod includes connecting portion, fixed mounting has stop nut on the connecting portion, stop nut orientation sliding assembly's terminal surface with the caliper body offsets, the driving rod is used for the drive sliding assembly slides.

Optionally, a bearing is arranged between the rotating portion and the caliper body, a clamping portion is arranged on one side of the bearing, which faces the limiting nut, the outer peripheral side of the clamping portion extends radially outward, the clamping portion abuts against the end face of the caliper body along the axial end face of the clamping portion, and the limiting nut abuts against the clamping portion.

Optionally, the limiting nut extends radially outwards towards the end of the clamping portion and abuts against the clamping portion.

Optionally, a second step portion is arranged on the connecting portion, and the limiting nut abuts against the second step portion.

Optionally, a buffer pad is arranged on the first end of the sliding component,

the sliding assembly has a brake station and a release station;

at the braking station, the second end of the sliding assembly and the second end of the caliper body are both abutted against a brake disc;

and at the release station, the first end of the sliding assembly is abutted against the first end of the caliper body through the buffer pad.

Optionally, the first end of sliding assembly is equipped with annular clamp, annular clamp with the shape phase-match of blotter, the blotter cover is established on the annular clamp.

Optionally, be equipped with the spacing ring on the annular clamp, the coaxial setting of spacing ring is in on the inside wall of annular clamp, the outer wall of blotter be equipped with spacing ring shape assorted spacing groove, the spacing ring is located the spacing inslot.

Optionally, a first bearing part is arranged on an end face, facing the first end of the caliper body, of the cushion pad;

the outer peripheral side of the first bearing portion extends radially outward,

and/or an inner peripheral side of the first bearing part extends radially inward;

and at the release station, the first bearing part is abutted against the first end of the caliper body.

In a second aspect, the present disclosure provides an electromechanical brake system comprising a brake caliper as described above.

In a third aspect, the present disclosure provides a vehicle comprising an electromechanical braking system as described above.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

according to the brake caliper, when the sliding assembly slides from the brake station to the release station, the moment when the sliding assembly is contacted with the caliper body applies a pulling force moving towards the inside of the caliper body to the driving rod, through the arrangement of the limiting nut, an axial supporting force in the opposite direction can be provided for the driving rod, the axial supporting force is offset with the pulling force applied by the sliding assembly to the driving rod, the driving rod is guaranteed not to move axially, and the reliability of the brake caliper is further guaranteed; it should be noted that, the connecting portion is used for connecting the motor output shaft, and the setting through limit nut also can prevent the actuating lever from shifting to one side of the inside of the caliper body along the axial direction, and then guarantee that the phenomenon that the connecting portion breaks away from the motor output shaft can not appear, and the stability and the security of the operation of whole braking system have been improved remarkably.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

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

FIG. 2 is a schematic structural view of a brake caliper in a brake station according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural view of a thread insert of a brake caliper according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of a cushion pad in a brake caliper according to an embodiment of the present disclosure.

Wherein, 1, the caliper body; 2. a sliding assembly; 21. an annular hoop; 22. a limiting ring; 23. a piston; 24. a threaded sleeve; 3. a force sensor; 4. a cushion pad; 41. a limiting groove; 42. a first bearing part; 5. a drive rod; 51. a lead screw part; 52. a rotating part; 53. a connecting portion; 54. a limit nut; 6. a plug screw; 61. a second bearing part; 62. a fixed part; 7. a bearing; 71. a clamping part; 8. a thrust bearing; 9. a friction plate.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

An electromechanical brake system, also called EMB, uses electric energy as an energy source and uses a torque motor to drive brake pads to generate braking force. An electromechanical brake system (EMB) has electrical and intelligent functions such as ABS, TCS, ESP, ACC and the like, and is increasingly emphasized by technologies such as active safety, unmanned driving and the like.

When the existing electronic mechanical brake system is used for brake release, the sliding assembly generates axial tensile force on the driving rod after moving to a release station, so that the driving rod moves axially in the direction towards the inside of the caliper body, the stability and reliability of the whole brake system are influenced, and the driving rod can be separated from the output shaft of the motor, so that the brake system is paralyzed.

Based on this, when the sliding assembly slides from the brake station to the release station, a tensile force moving towards the inside of the caliper body is applied to the driving rod at the instant when the sliding assembly contacts with the caliper body, and through the arrangement of the limit nut, an axial supporting force in the opposite direction can be provided for the driving rod, and the axial supporting force offsets with the tensile force applied to the driving rod by the sliding assembly, so that the driving rod is ensured not to generate axial play, and the reliability of the brake caliper is further ensured; it should be noted that, the connecting portion is used for connecting the motor output shaft, and the setting through limit nut also can prevent the actuating lever from shifting to one side of the inside of the caliper body along the axial direction, and then guarantee that the phenomenon that the connecting portion breaks away from the motor output shaft can not appear, and the stability and the security of the operation of whole braking system have been improved remarkably. This is illustrated in detail by the following specific examples:

referring to fig. 1 to 4, the present embodiment provides a brake caliper including: the clamp comprises a clamp body 1, a sliding assembly 2 and a driving rod 5; the sliding component 2 is arranged on the caliper body 1 in a sliding manner; the driving rod 5 is connected with the rotation of the caliper body 1, the driving rod 5 comprises a connecting portion 53, a limit nut 54 is fixedly mounted on the connecting portion 53, the limit nut 54 abuts against the caliper body 1 towards the end face of the sliding assembly 2, and the driving rod 5 is used for driving the sliding assembly 2 to slide.

When the sliding assembly 2 slides from the brake station to the release station, the sliding assembly 2 applies a pulling force moving towards the inside of the caliper body 1 to the driving rod 5 at the moment of contact with the caliper body 1, and through the arrangement of the limit nut 54, an axial supporting force in the opposite direction can be provided for the driving rod 5, and the axial supporting force offsets with the pulling force applied to the driving rod 5 by the sliding assembly 2, so that the driving rod 5 is ensured not to move axially, and the reliability of the brake caliper is further ensured; it should be noted that, the connecting portion 53 is used for connecting the output shaft of the motor, and the driving rod 5 can be prevented from moving to one side of the inside of the caliper body 1 along the axial direction by the arrangement of the limit nut 54, so as to ensure that the connecting portion 53 does not separate from the output shaft of the motor, and significantly improve the stability and safety of the operation of the whole braking system.

In some embodiments, a bearing 7 is disposed between the rotating portion 52 and the caliper body 1, a clamping portion 71 is disposed on one side of the bearing 7 facing the limiting nut 54, an outer peripheral side of the clamping portion 71 extends radially outward, an end surface of the clamping portion 71 in an axial direction thereof abuts against an end surface of the caliper body 1, and the limiting nut 54 abuts against the clamping portion 71; in a further embodiment, the limit nut 54 extends radially outward toward the end of the snap-in portion 71, and abuts against the snap-in portion 71; through the arrangement of the bearing 7, not only can the friction force between the caliper body 1 and the rotating part 52 be reduced, but also the driving rod 5 can be further ensured not to generate axial play by utilizing the limit matching of the clamping part 71 and the limit nut 54, and it should be noted that the clamping part 71 is also used as a buffer structure between the limit nut 54 and the caliper body 1, so that the direct collision impact of the limit nut 54 on the caliper body 1 can be avoided; the contact area between the limiting nut 54 and the clamping portion 71 can be increased through the structure of the limiting nut 54 extending along the radial direction, namely, the buffering area is increased, and the structural strength of the end face of the limiting nut 54 can be effectively improved;

in some embodiments, the connecting portion 53 is provided with a second step portion, and the stop nut 54 abuts against the second step portion; through the setting of second ladder portion, can fix a position stop nut 54's mounted position faster, also can utilize this second ladder portion simultaneously, reduce the installation degree of difficulty of actuating lever 5 on the caliper body 1. It should be noted that the driving rod 5 further includes a screw portion 51 and a rotating portion 52, the rotating portion 52 is rotatably connected to the caliper body 1, the screw portion 51 is threadedly connected to the sliding assembly 2, and the rotating portion 52 is located between the screw portion 51 and the connecting portion 53, wherein a second step portion is formed at the connection between the rotating portion 52 and the connecting portion 53, and it should be understood that the connecting portion 53 is used for connecting the output shaft of the motor.

In some embodiments, the first end of the caliper body 1 is provided with the force sensor 3, and the screw part 51 or the rotating part 52 is connected with the force sensor 3; through the arrangement of the force sensor 3, the braking effect of the braking system can be improved, the magnitude of the braking force can be fed back in real time, and more accurate information is provided for a vehicle machine and a driver, so that the safety of the vehicle is improved; it should be understood that the outer circumference of the force sensor 3 is fixed on the caliper body 1, and the center of the force sensor 3 is connected to the driving rod 5, so that the force sensor 3 can accurately measure the axial stress of the caliper body 1 and the driving rod 5.

In a further embodiment, a thrust bearing 8 is provided between the end face of the screw part 51 facing the force sensor 3 and the force sensor 3; through thrust bearing 8's setting, not only can place lead screw portion 51's rotation and produce wearing and tearing to force sensor 3, can also increase the lifting surface area simultaneously, reduce frictional force, comprehensive structural integrity to force sensor 3 protects.

The sliding assembly 2 in the brake caliper is provided with a brake station and a release station, and the screw rod part 51 is used for driving the sliding assembly 2 to slide between the brake station and the release station; at a braking station, the second end of the caliper body 1 and the second end of the sliding assembly 2 are both abutted against a brake disc; at a release station, the second end of the caliper body 1 is separated from the brake disc, and/or the second end of the sliding assembly 2 is separated from the brake disc, and the sliding assembly 2 respectively corresponds to two working processes, namely a brake tightening process and a brake release process, when sliding towards the brake station and sliding towards the release station; in the braking and clamping process, the driving rod 5 rotates to drive the sliding assembly 2 to slide along the axial direction of the sliding assembly, the second end of the sliding assembly 2 approaches towards the second end of the caliper body 1, and the second end of the sliding assembly 2 and the second end of the caliper body 1 gradually approach and clamp a brake disc together to realize braking; in the process of brake release, the driving rod 5 rotates reversely to drive the sliding assembly 2 to slide along the axial direction of the sliding assembly, the first end of the sliding assembly 2 is close to the first end of the caliper body 1, and the second end of the sliding assembly 2 is far away from the second end of the caliper body 1, so that the brake release is realized; it will be appreciated that the slide assembly 2 is located between the first and second ends of the caliper body 1, and that the end of the slide assembly 2 adjacent the first end of the caliper body 1 is its first end and the end of the slide assembly 2 adjacent the second end of the caliper body 1 is its second end.

With continued reference to fig. 1 and 4, a cushion 4 is provided on a first end of the slide assembly 2, the slide assembly 2 having a braking station and a release station; at a braking station, the second end of the sliding assembly 2 and the second end of the caliper body 1 are both abutted against a brake disc; at the release station, the first end of the sliding component 2 is propped against the first end of the caliper body 1 through a cushion pad 4; through the setting of blotter 4, can make the first end of sliding component 2 pass through blotter 4 and force sensor 3 looks butt at the in-process that the braking released, realize the back-off striking buffering of sliding component 2 to reduce the noise of this brake caliper in the braking release in-process, and can prolong brake caliper's life effectively, it can be understood that the material of blotter 4 can make rubber, plastics and other have elastic material.

With continued reference to fig. 1 to 4, the first end of the sliding component 2 is provided with an annular hoop 21, the shape of the annular hoop 21 is matched with that of the cushion pad 4, and the cushion pad 4 is sleeved on the annular hoop 21; through the setting of annular clamp 21, can realize that blotter 4 is spacing on the radial of sliding component 2, it is required to explain, also can establish annular clamp 21 cover in the periphery side of blotter 4, can prevent like this that blotter 4 and the caliper body 1 from taking place the friction, can improve the life of blotter 4, can reduce the frictional force that whole brake caliper produced again, as long as can guarantee that blotter 4 is stable fixes on sliding component 2's first end, and stretch out towards one side of force transducer 3 can.

With continued reference to fig. 1 to 4, the annular clamp 21 is provided with a limiting ring 22, the limiting ring 22 is coaxially arranged on the inner side wall of the annular clamp 21, the outer wall of the cushion pad 4 is provided with a limiting groove 41 matched with the limiting ring 22 in shape, and the limiting ring 22 is located in the limiting groove 41; through the matching arrangement of the limiting ring 22 and the limiting groove 41, the axial direction of the cushion pad 4 can be effectively limited, so that the cushion pad can stably reciprocate along with the sliding component 2 in the axial direction; it should be noted that the limiting ring 22 is a circular ring structure with a rectangular cross section, so that both end surfaces in the axial direction can provide reliable supporting force, and further ensure the stability and reliability of the cushion pad 4 on the sliding assembly 2.

With continued reference to fig. 1 and 4, a first bearing portion 42 is disposed on an end surface of the cushion pad 4 facing the first end of the caliper body 1; the outer peripheral side of the first bearing part 42 extends radially outward, and/or the inner peripheral side of the first bearing part 42 extends radially inward; in the release position, the first bearing portion 42 abuts the first end of the caliper body 1.

In some embodiments, the force sensor 3 is mounted on the first end of the caliper body 1 by a screw 6, the screw 6 is in threaded connection with the caliper body 1, the screw 6 is located between the force sensor 3 and the sliding assembly 2; through the setting of plug screw 6, not only can fix the stable compressing tightly in edge of force sensor 3 on the caliper body 1, can also utilize and simplify assembly process, improve assembly efficiency, moreover, plug screw 6 can regard as force sensor 3's fixed knot to construct, also provides the quilt striking face when the braking releases simultaneously, protection force sensor 3 that can be better.

In some embodiments, the screw plug 6 comprises a second bearing portion 61 and a fixing portion 62, which are coaxially arranged; the fixing part 62 is in threaded connection with the caliper body 1, and the end surface of the fixing part 62 along the axial direction is abutted against the force sensor 3; the second bearing part 61 is located between the fixing part 62 and the sliding component 2, and at the release position, the second bearing part 61 abuts against the first end of the sliding component 2.

In a further embodiment, the outer peripheral side of the second bearing part 61 extends radially outward, and/or the inner peripheral side of the second bearing part 61 extends radially inward; through the arrangement of the first bearing portion 42 and the second bearing portion 61, the contact area between the cushion pad 4 and the screw plug 6 can be increased, the service life of the cushion pad 4 can be prolonged while the buffering effect is ensured, and it should be noted that the outer diameter of the first bearing portion 42 is smaller than the outer diameter of the sliding assembly 2, so as to prevent the sliding assembly 2 from affecting the sliding on the caliper body 1.

In some embodiments, the fixing portion 62 is a ring-shaped structure, and the fixing portion 62 abuts against the outer edge of the end face of the force sensor 3. It should be understood that the outer edge of the annular fixing portion 62 can be screwed with the caliper body 1 through a screw structure, and the end surface of the fixing portion 62 along the axial direction thereof can be abutted against the outer edge of the end surface of the force sensor 3, so that not only can a reliable supporting force be provided for the force sensor 3, but also the middle part of the force sensor 3 can be avoided, and the working effect thereof can be prevented from being affected.

In a further embodiment, the force sensor 3 is provided with a first step portion at the outer edge of the end face facing the fixing portion 62, the fixing portion 62 being located within the first step portion; through the arrangement of the first step part, an avoiding structure can be formed with the fixing part 62, so that the screw plug 6 and the force sensor 3 have overlapped parts in the axial direction, and the arrangement can shorten the axial space occupied by the screw plug 6 and the force sensor 3; meanwhile, the function of limiting the radial direction of the force sensor 3 by the screw plug 6 can be realized by utilizing the structure.

With continued reference to fig. 1 to 3, the sliding assembly 2 includes a piston 23 and a threaded sleeve 24, the threaded sleeve 24 is in threaded connection with the driving rod 5, and in the braking position, the piston 23 and the second end of the caliper body 1 both abut against the brake disc; by designing the slide module 2 to have a split structure, different materials can be selected according to the working scenes of the piston 23 and the threaded sleeve 24, and the cost for replacing parts can be reduced.

In some embodiments, the piston 23 and the second end of the caliper body 1 are both provided with friction plates 9, and a braking space for clamping a brake disc is formed between the two friction plates 9; through the setting of friction disc 9, can further improve this brake caliper's braking effect, also more easily change when friction disc 9 can provide bigger frictional force, the cost is also lower.

In a second aspect, the present disclosure provides an electromechanical brake system comprising a brake caliper as described above.

In a third aspect, the present disclosure provides a vehicle comprising an electromechanical braking system as described above.

The specific implementation manner and the implementation principle are the same as those of the above embodiment, and can bring the same or similar technical effects, and are not described in detail herein, and reference may be made to the description of the above brake caliper embodiment.

It is noted that, in this document, 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. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A brake caliper, comprising: the clamp comprises a clamp body, a sliding assembly and a driving rod;

the sliding assembly is arranged on the caliper body in a sliding mode;

the driving rod with the caliper body rotates to be connected, the driving rod includes connecting portion, fixed mounting has stop nut on the connecting portion, stop nut orientation sliding assembly's terminal surface with the caliper body offsets, the driving rod is used for the drive sliding assembly slides.

2. Brake calliper according to claim 1, wherein the drive lever further comprises a rotation portion which is rotationally connected with the calliper body; the bearing is arranged between the rotating portion and the caliper body, a clamping portion is arranged on one side, facing the limiting nut, of the bearing, the outer peripheral side of the clamping portion extends outwards in the radial direction, the clamping portion abuts against the end face of the caliper body along the axial end face of the clamping portion, and the limiting nut abuts against the clamping portion.

3. Brake calliper according to claim 2, wherein the limit nut extends radially outwards towards the end of the snap-in portion and abuts against the snap-in portion.

4. The brake caliper of claim 1, wherein a second step portion is provided on the connecting portion, and the retainer nut abuts against the second step portion.

5. Brake calliper according to claim 1, wherein the first end of the sliding assembly is provided with a cushion pad,

the sliding assembly has a brake station and a release station;

at the braking station, the second end of the sliding assembly and the second end of the caliper body are both abutted against a brake disc;

and at the release station, the first end of the sliding assembly is propped against the first end of the caliper body through the cushion pad.

6. Brake calliper according to claim 5, wherein the first end of the sliding assembly is provided with an annular collar matching the shape of the cushion, which is fitted over the annular collar.

7. The brake caliper of claim 6, wherein a limiting ring is disposed on the annular clamp, the limiting ring is coaxially disposed on an inner sidewall of the annular clamp, an outer wall of the cushion pad is provided with a limiting groove matching with the shape of the limiting ring, and the limiting ring is disposed in the limiting groove.

8. Brake calliper according to claim 5, wherein the cushion pad is provided with a first bearing portion on an end face facing the first end of the calliper body;

the outer peripheral side of the first bearing portion extends radially outward,

and/or the inner peripheral side of the first bearing part extends inwards along the radial direction;

and at the release station, the first bearing part is abutted against the first end of the caliper body.

9. An electromechanical brake system comprising a brake caliper according to any one of claims 1 to 8.

10. A vehicle comprising the electromechanical braking system of claim 9.

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