CN217558834U - Return spring body, fixed caliper and vehicle - Google Patents

Abstract

The utility model relates to a fixed stopper field discloses return spring body and fixed calliper and vehicle, it is including being used for fixing the anchor plate on the pincers body with the return spring body to and connect the flank board at anchor plate limit portion, the flank board is the acute angle with the contained angle of anchor plate, be provided with the support element who is used for supporting the braking piece on the flank board, braking piece accessible is used for driving flank board axial motion and drives the anchor plate and take place deformation and gather elastic potential energy on the support element, the axial deformation volume that the return spring body was predetermine is for predetermineeing the braking clearance. The structure has the advantages of automatic clearance adjustment, low noise, smooth friction surface and the like.

Description

Return spring body, fixed caliper and vehicle

Technical Field

The utility model relates to a stopper field has especially related to return spring body and fixed calliper and vehicle.

Background

The utility model in WO2020129012A1 and WO2020128946A9 keeps the brake pads separated and parallel to the brake disc, but they keep the same distance between the backing plate of the brake pad and the brake disc, independent of the wear of the brake pads, thus resulting in the clearance between the brake disc and the surface of the brake pad becoming larger and larger as the wear of the brake pad increases, resulting in a longer stroke of the brake pad before contacting the surface of the brake disc, thus increasing the braking delay.

The utility model in DE102017204696A1 is an integral fixed spring. The action of the springs on the outer radial edge of the brake pad results in an uneven, sometimes incomplete, separation between the brake pad and the brake disc, which determines residual torque, unintended positioning and orientation of the brake pad, and uneven wear of the brake pad. However, such elastic action, mainly at the top of the brake pad, tends to make the brake pad itself non-parallel to the braking surface of the brake disc and not perfectly facing the thrust means) rear surface or plate surface, causing the initial instantaneous sinking of the brake pad at each start of the braking action, sometimes resulting in a non-optimal sinking of the brake pad with the brake disc or with the piston exerting the braking thrust.

The utility model of US20080265663A1 is the use of brake pad clips to secure the brake pads to the caliper piston, which means that only special brake pads can be used, and special tools are required to replace the brake pads, while the anti-lock brake system of the vehicle must also be replaced. Thus, the complexity of the system is increased, as well as many components, which is not desirable for safety critical systems like brake systems.

The utility model of US6378665B1 adds a retraction spring to the system which also adds complexity to the system, makes brake pad replacement more difficult, and risks improper spring installation after brake pad replacement. The spring always pushes the piston and the brake pad backwards, the spring force is balanced with the mechanical resistance of this part, independent of the wear of the brake pad, so that it creates an excessive clearance for the old brake pad.

The utility model of US7086506B2 also adds a special spring in the system, which has the risk of improper assembly when replacing the brake pad, and brake dust can accumulate under the connecting surface of the spring to increase the preload of the spring.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's shortcoming, provide return spring body and fixed calliper and vehicle.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

the return spring body comprises an anchoring plate and a side wing plate, the anchoring plate is used for fixing the return spring body on the caliper body, the side wing plate is connected to the edge of the anchoring plate, an included angle between the side wing plate and the anchoring plate is an acute angle, a supporting unit used for supporting a braking piece is arranged on the side wing plate, the braking piece can act on the supporting unit to drive the side wing plate to move axially and drive the anchoring plate to deform to accumulate elastic potential energy, and the preset axial deformation of the return spring body is a preset braking gap.

Preferably, the axial deformation of the return spring body is equal to the axial displacement at the connection of the anchor plate and the side wing plate.

Preferably, the support unit is of a ratchet structure, the support unit is composed of a plurality of ratchet units, the ratchet units comprise support surfaces for supporting the brake pads, and the brake pads can move synchronously with the side wing plates in the axial direction by acting on the ratchet units.

Preferably, the ratchet units are in flexible and variable structures, the ratchet units are axially arranged to form the ratchet structures, and the allowed movement direction of the ratchet structures is towards the brake disc; the brake pad can slide to the adjacent ratchet unit close to the brake disc from the current ratchet unit only when the axial movement distance required by the brake pad for braking is larger than the preset axial deformation of the return spring body and the axial deformation of the ratchet unit.

Preferably, the support surface is an arc-shaped surface, an inclined surface or a flat surface.

Preferably, both sides of the lateral wing plate are provided with inner and outer dams for confining the caliper-opening and back sides of the brake pads.

Preferably, the return spring body is made of a self-lubricating material.

The fixed caliper comprises the return spring body, a caliper body and at least one brake pad consisting of a back plate and a friction pad, wherein the return spring body is fixedly arranged on the disc inlet side and the disc outlet side of the brake pad;

the surfaces of the side wing plates are in contact with the disc inlet side or the disc outlet side of the back plate to control the axial movement of the brake pad; the supporting unit is of a flexible deformable structure, and the lateral wings of the backboard are supported on the supporting unit and can deform under the action of the backboard; the back plate drives the side wing plates to axially move through the abutting support units;

one end of the anchor plate is fixed on the caliper body, the anchor plate is a flexible plate and can generate elastic deformation under the driving of the brake pad, and the rest parts of the return spring can realize axial movement through the deformation of the anchor plate;

the inner side surfaces of the side wing plates are planes, the supporting units are arranged on the plane areas, and in the process that the brake pads move towards the brake disc, the side wings of the back plate are pushed towards the brake disc through the supporting units; in the process, the sum of the force generated by the deformation of the supporting unit and the friction force between the side wing plate and the back plate is equal to the deformation force of the anchoring piece for realizing the preset deformation force of the return spring body, and the sum of the force generated by the deformation of the supporting unit and the friction force between the side wing plate and the back plate does not exceed the preset deformation force of the anchoring piece.

Preferably, the two sides of the lateral wing plates are provided with an inner baffle and an outer baffle for limiting the jaw side and the back side of the brake block, and the inner baffle is contacted with the radial inner side edge of the back plate to limit the radial inward movement of the brake block; the outer shield contacts a radially outer edge of the backing plate to limit outward radial movement of the brake pad.

The vehicle is equipped with the return spring body and the fixed caliper.

Through the technical scheme, the utility model discloses following technological effect has:

the utility model designs a fixed calliper of return spring body and adaptation, its creating has following technological effect: the drag torque of a disc brake is eliminated by maintaining an optimum distance of the brake pads from the brake disc, regardless of the degree of wear of the brake pads. And can keep the friction surface of the brake block parallel with the friction surface of the brake block all the time to promote the even wearing and tearing of friction material, and can ensure the lubrication of the sliding surface of the back plate of the automobile brake block, in order to lengthen the replacement time of the brake block, and it reduces the noise level through ensuring the brake block of correct fixation and damping force within the range of characteristic vibration excitation at the same time.

Drawings

Fig. 1 is a schematic view of the overall structure of the clamp body, the return spring body and the brake pad.

Fig. 2 is a partially enlarged view of fig. 1.

Fig. 3 is an exploded view of fig. 2.

Fig. 4 is a schematic view of the ratchet unit and the back plate support.

The names of the parts indicated by the numerical references in the drawings are as follows: 601-return spring body, 602-anchor plate, 603-flank plate, 604-supporting unit, 605-deformation, 606-ratchet unit, 607-supporting surface, 608-disc-in side, 609-disc-out side, 610-inner baffle, 611-outer baffle, 612-back plate, 613-friction pad, 614-caliper body, 615-jaw side, 616-caliper back side, 617-piston, 618-brake pad, 619-plane, 620-flank back plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

The entire return spring body 601 has elastic deformation recovery capability. The anchor plate 602 is used for fixing the return spring body 601 on the caliper body 614, and in the embodiment, the anchor plate 602 plays a role in designing the preset deformation 605 of the return spring body 601, that is, the anchor plate 602 does not deform when deforming to a certain degree of the preset deformation 605. And a side wing plate 603 connected to an edge of the anchor plate 602, wherein an angle between the side wing plate 603 and the anchor plate 602 is acute, and in the present embodiment, the side wing plate 603 and the brake disk are vertically disposed, so that the entire anchor plate 602 in an assembled state is inclined in a direction of the brake disk. The side wing plate 603 is provided with a supporting unit 604 for supporting a braking piece 618, the braking piece 618 can drive the side wing plate 603 to move axially by acting on the supporting unit 604 and drive the anchoring plate 602 to deform and accumulate elastic potential energy, a preset axial deformation 605 of the return spring body 601 is a preset braking gap, and when the return spring body 601 reaches the maximum deformation 605 of the return spring body 601 under the driving of the braking piece 618, the side wing plate 603 moves axially by the preset deformation 605; brake pads 618 brake in contact with the brake rotor.

In the embodiment, the axial deformation 605 of the return spring body 601 is equal to the axial displacement of the joint of the anchor plate 602 and the flank 603, that is, the position is a reference position of the preset deformation 605. One end of the rivet plate is fixed and the other end is deformed to move axially by the urging of the stopper 618.

In this embodiment, the support unit 604 is a ratchet structure, the ratchet unit 606 includes a support surface 607 for contacting with the edge of the back plate shoulder 620 of the catch 618, and a sliding surface 621 adjacent to the support surface 607, the sliding surface 621 intersects with the support surface 607 to form a ridge, so as to form the ratchet structure of the ratchet unit 606, and the catch 618 can move synchronously with the side wing plate 603 in the axial direction by acting on the ratchet unit 606. The ratchet arrangement ensures that relative movement of the catch 618 is ensured in one direction, but not in the opposite direction, which is self-locking. When the amount of wear increases beyond the predetermined amount of clearance, the brake pad 618 slides relative to the side wing plate 603 and falls onto the adjacent support unit 604, thereby shortening the distance between the backing plate 612 and the brake disc, shortening the brake clearance, and performing an automatic compensation function. Since the supporting unit 604 has a ratchet structure, the back plate 612 and the side wings 603 do not move backward.

In this embodiment, the ratchet units 606 are flexible and changeable structures, the ratchet units 606 are axially arranged to form a ratchet structure, and the allowed movement direction of the ratchet structure is towards the brake disc; the brake plate 618 can only slide from the current ratchet unit 606 to the adjacent ratchet unit 606 in the direction close to the brake disc when the brake plate 618 requires a distance of axial movement for braking that is greater than the preset axial deformation 605 of the return spring body 601 and the axial deformation 605 of the ratchet unit 606.

In this embodiment, the support surface 607 is an arc surface, an inclined surface or a flat surface, the sliding surface 621 is an arc surface or an inclined surface, and the brake plate 618 can slide to the adjacent ratchet unit (606) under the pushing of the piston via the sliding surface, wherein the support unit 604 is a flexible and variable structure, that is, when the back plate 612 acts on the support unit 604, the support unit 604 can generate a certain adaptive deformation, so as to ensure that the back plate 612 maintains an optimal angular position relative to the piston 617, and at the same time, the friction force between the back plate 612 and the support unit 604 plays a proper damping role, so as to prevent all noise problems caused by vibration.

In this embodiment, both sides of the side wing plate 603 are provided with an inner baffle 610 and an outer baffle 611 for limiting the caliper gap side and the caliper back side 616 of the brake pad 618. The geometry of the return spring body 601 can ensure that the movement of the brake pad can be effectively and flexibly limited in the axial direction, the radial direction and the tangential direction. In this embodiment, the return spring body 601 is made of a self-lubricating material. The service life is prolonged.

Example 2

The fixed caliper comprises a caliper body 614 and the return spring body 601, and at least comprises a brake pad consisting of a back plate 612 and a friction pad 613, wherein the return spring body 601 is fixedly arranged on a disc inlet side 608 and a disc outlet side 609 of the brake pad; the return spring body 601 is the return spring body 601 of embodiment 1. Each brake pad 618 is provided with a return spring body 601 on the disc-in side 608 and the disc-out side 609, which serves as a balance support.

Flank 603 surfaces contact either a disc entry side 608 or a disc exit side 609 of a backing plate 612 to control axial movement of brake pads 618; support element 604 is a flexible deformable structure that can adaptively adjust the position of brake pad 618 to maintain brake pad 618 and the brake disk in a parallel state.

In this embodiment, the back plate side wings 620 are supported on the supporting unit 604 and can deform under the action of the back plate 612; the back plate 612 drives the side wing plates 603 to axially move through the abutting support unit 604;

one end of the anchor plate 602 is fixed on the caliper body, the anchor plate 602 is a flexible plate and can generate elastic deformation under the driving of the brake pad 618, and the rest parts of the return spring can realize axial movement through the deformation of the anchor plate 602; the preset deformation 605 of the present embodiment is the distance between the connection of the anchor plate 602 and the flank 603 and the fixing plane of the anchor plate 602, because when the connection end of the anchor plate 602 is deformed to a certain extent and collides with the fixing platform of the anchor plate 602, the anchor plate 602 is no longer deformed, so the distance of the axial movement of the connection end of the anchor plate 602 is the preset deformation 605, which has the advantages of simple design, reliable result, etc.

The inner side surface of the side wing plate 603 is a plane, the support unit 604 is arranged on the plane area 619, and in the process that the brake pad 618 moves towards the brake disc, the back plate side wing 620 pushes towards the brake disc through the support unit 604; in the process, the sum of the force generated by the deformation of the supporting unit 604 and the friction force between the side wing plate 603 and the back plate 612 is equal to the deformation force of the anchor sheet for realizing the preset deformation force of the return spring body 601, and the sum of the force generated by the deformation of the supporting unit 604 and the friction force between the side wing plate 603 and the back plate 612 does not exceed the preset deformation force of the anchor sheet. Inner and outer baffles 610 and 611 for limiting a jaw side and a jaw back side 616 of the brake pad 618 are arranged on both sides of the side wing plate 603, and the inner baffle 610 contacts with a radial inner edge of the back plate 612 to limit radial inward movement of the brake pad 618; outer baffle 611 contacts the radially outer edge of backing plate 612 to limit outward radial movement of brake pads 618. The radial dimension of the flat surface in this embodiment is equal to the back plate shoulder 620, so the radial direction of the back plate 612 is also limited.

During braking, the brake pad is mounted on the brake caliper, the back plate 612 of the brake pad is abutted against the piston 617, the return spring body 601 is pushed into a position between the caliper body 614 and the back plate side wing 620, the anchor plate 602 of the return spring body 601 is fixed on the brake caliper, after the mounting is completed, the brake pad is flexibly positioned through the side wing plate 603, the inner baffle 610 and the outer baffle 611, and the edge of the back plate 612 is supported on the supporting unit 604, but the structural parts are not deformed.

When the vehicle starts to brake, the piston 617 moves axially to push the back plate 612 to the support unit 604, the back plate shoulder 620 deforms the support unit 604 and simultaneously acts on the anchor pad to deform the anchor pad, the back plate 612 continuously pushes to deform the return spring body 601 until reaching the preset deformation amount 605, the deformation force of the return spring body 601 is higher than the sum of the deformation force generated by the support unit 604 and the friction force between the side plate and the back plate 612, therefore, the back plate 612 starts to slide relative to the side wing plates 603 until the brake pad 618 does not exert a specified force on the brake disc, but the return spring does not deform any further, the brake pedal is released, the axial force of the piston 617 stops, and the return spring body 601 pushes the brake pad 618 back to restore the shape before the deformation. The distance that the brake block is pushed back is just the preset deformation 605 designed for the return spring body 601, and the support unit 604 can ensure that the back plate 612 is always parallel to the pushing surface of the piston 617.

When the catch 618 is worn to a certain extent, the back plate 612 can jump from the current ratchet unit 606 to the adjacent ratchet unit 606 during the axial sliding of the flanks 603, and the ratchet structure of the ratchet unit 606 can prevent the back plate 612 from returning to the original ratchet unit 606 during the return process. It is worth mentioning that all or part of the return spring body 601 is made of self-lubricating material, so that lubrication is always kept between the side wing of the back plate 612 and the return spring body 601 and between the return spring body 601 and the caliper body 614.

Example 3

A vehicle equipped with the fixed caliper of embodiment 2.

Claims (10)

1. The return spring body, its characterized in that: the brake block (618) can drive the side wing plate (603) to axially move and drive the anchor plate (602) to generate deformation and accumulate elastic potential energy by acting on the supporting unit (604), and the preset axial deformation (605) of the return spring body (601) is a preset braking gap.

2. A return spring body according to claim 1, wherein: the axial deformation (605) of the return spring body (601) is equal to the axial displacement of the joint of the anchor plate (602) and the side wing plate (603).

3. A return spring body according to claim 1, wherein: the support unit (604) is of a ratchet structure, the support unit (604) is composed of a plurality of ratchet units (606), each ratchet unit (606) comprises a support surface (607) used for being in contact with the edge portion of the back plate side wing (620) of the brake block (618) and a sliding surface (621) adjacent to the support surface (607), the sliding surfaces (621) and the support surfaces (607) intersect to form a ridge, so that the ratchet structure of the ratchet units (606) is formed, and the brake block (618) can axially move synchronously with the side wing plates (603) through acting on the ratchet units (606).

4. A return spring body according to claim 1, wherein: the ratchet units (606) are of flexible and variable structures, the ratchet units (606) are axially arranged to form a ratchet structure, and the allowed movement direction of the ratchet structure is towards the direction of the brake disc; the brake block (618) can slide to the adjacent ratchet unit (606) close to the brake disc from the current ratchet unit (606) only when the axial movement distance required by the brake block (618) for braking is larger than the preset axial deformation amount (605) of the return spring body (601) and the axial deformation amount (605) of the ratchet unit (606).

5. A return spring body according to claim 4, wherein: the supporting surface (607) is an arc surface, an inclined surface or a plane, the sliding surface (621) is an arc surface or an inclined surface, and the brake block (618) can slide to the adjacent ratchet unit (606) through the sliding surface under the pushing of the piston.

6. A return spring body according to claim 1, wherein: the two sides of the side wing plate (603) are provided with an inner baffle (610) and an outer baffle (611) for limiting the clamp opening side and the clamp back side (616) of the brake block (618).

7. A return spring body according to claim 1, wherein: the return spring body (601) is made of self-lubricating materials.

8. A fixed caliper comprising the return spring body of any one of claims 1 to 7, wherein: the brake caliper comprises a caliper body (614) and at least one brake pad consisting of a back plate (612) and a friction pad (613), wherein return spring bodies (601) are fixedly mounted on a disc inlet side (608) and a disc outlet side (609) of the brake pad;

the flank (603) surfaces are in contact with a disc entry side (608) or a disc exit side (609) of a backing plate (612) to control axial movement of brake pads (618); the supporting unit (604) is a flexible deformable structure, and the backboard lateral wings (620) are supported on the supporting unit (604) and can deform under the action of the backboard (612); the back plate (612) drives the side wing plates (603) to move axially through the abutting support unit (604);

one end of the anchor plate (602) is fixed on the caliper body, the anchor plate (602) is a flexible plate and can generate elastic deformation under the driving of the brake pad (618), and the rest parts of the return spring can realize axial movement through the deformation of the anchor plate (602);

the inner side surface of the side wing plate (603) is a plane, the supporting unit (604) is arranged on the plane area (619), and in the process that the brake pad (618) moves towards the brake disc, the back plate side wing (620) pushes towards the brake disc direction through the supporting unit (604); in the process, the sum of the force generated by the deformation of the supporting unit (604) and the friction force of the side wing plates (603) and the back plate (612) is equal to the deformation force of the anchor sheet for realizing the preset deformation force of the return spring body (601), and the sum of the force generated by the deformation of the supporting unit (604) and the friction force of the side wing plates (603) and the back plate (612) does not exceed the preset deformation force of the anchor plate (602).

9. The fixed caliper of claim 8, wherein: the two sides of the side wing plate (603) are provided with an inner baffle (610) and an outer baffle (611) for limiting the jaw side and the back side (616) of the brake pad (618), and the inner baffle (610) is contacted with the radial inner side edge of the back plate (612) to limit the radial inward movement of the brake pad (618); an outer baffle (611) contacts a radially outer edge of the backing plate (612) to limit outward radial movement of the brake pads (618).

10. A vehicle, characterized in that: a return spring body (601) according to claims 1 to 7 is assembled.

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