CN211259424U

CN211259424U - Brake

Info

Publication number: CN211259424U
Application number: CN201922218170.8U
Authority: CN
Inventors: 任艳强; 郑健; 肖水波
Original assignee: LONGZHONG HOLDING GROUP CO LTD
Current assignee: LONGZHONG HOLDING GROUP CO LTD
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-08-14
Anticipated expiration: 2029-12-11

Abstract

The utility model provides a brake belongs to stopper technical field. The brake block assembly solves the problems that the hub disc assembly is inconvenient to disassemble and replace due to the positioning of the brake block assembly in the existing brake. This stopper, including brake block assembly and the pincers body, the pincers body includes the installation department fixed with brake block assembly, brake block assembly is including pasting the backplate that leans on in the installation department medial surface, the side relative with the installation department has convex lug on the backplate, the location boss that is used for supporting the lug has on the installation department, detachable is fixed with on the top of installation department makes the lug keep leaning on the clamp plate that leans on in the location boss, the both sides that lie in the backplate on the medial surface of installation department have respectively and lean on the locating piece that leans on with the backplate, be provided with the groove of stepping down in the junction of locating piece and installation department on the medial surface of installation department, the backplate can insert and take out from between two locating. The brake structure can ensure that the hub disc assembly is convenient to disassemble and replace when the brake block assembly is positioned.

Description

Brake

Technical Field

The utility model belongs to the technical field of the stopper, a stopper is related to.

Background

The braking system is a system that forcibly reduces the movement speed of the sporting goods. On vehicles, braking is usually performed by a brake, which includes a disc brake, also called a disc brake, a drum brake, also called a drum brake, and the like. The floating caliper disc brake is widely applied to automobiles due to the advantages of fast heat dissipation, light weight and the like. The floating caliper type disc brake comprises a transmission mechanism, a bracket and a caliper body arranged on the bracket, wherein a sliding pin is arranged on the bracket and penetrates through a sliding pin hole on the caliper body, and the transmission mechanism is connected with a brake block arranged on the caliper body. The combination of the caliper body and the component attached to the caliper body is sometimes referred to as a brake caliper assembly.

The bracket is sometimes called a bracket, and a commonly used bracket is a vehicle disc brake bracket as disclosed in chinese patent literature [ application number: CN 201510136515.9; publication number: CN 104776134A ]: the support comprises a symmetrical curved beam, support heads are symmetrically arranged at two ends of the curved beam, round holes are formed in the upper portion of each support head, and three bolt holes are formed in the lower portion of each support head. The two oppositely arranged bracket heads are connected through the side edge plate, the bracket forms an enclosing structure, and the braking part of the brake disc is positioned between the two curved beams and is enclosed by the bracket.

And the top parts of the two curved beams are respectively provided with an inner brake block assembly and an outer brake block assembly, and the inner brake block assembly and the outer brake block assembly are respectively positioned on the inner side and the outer side of the brake disc. The brake disc passes through the ring flange structure to be fixed with wheel hub, and wheel hub passes through the bearing to be fixed on the axletree of car, and the brake disc constitutes wheel hub assembly with wheel hub. The brake caliper assembly is fixed on a suspension through a support, the position relation between the suspension and an axle is fixed, and the installation space between the brake caliper assembly and a brake disc is limited. Because the braking portion of the brake disc is surrounded by the bracket, the bracket forms limitations on the inner side, the outer side and two radial sides of the braking portion of the brake disc, and the hub disc assembly can be detached from the axle only after the brake caliper assembly is detached from the suspension frame. The brake caliper assembly is disassembled to be the support, and the support is required to be repositioned when being fixed again after the support is disassembled, so that the hub disc assembly is inconvenient to disassemble and replace.

The support limits the replacement of the hub disc assembly, and the elimination of the support is a method for solving the problem. Chinese patent literature discloses a disc brake caliper assembly without a bracket [ application number: CN201020511920.7, publication number: CN 201858286U ], including the pincers body, set up the piston in the pincers body, by the inboard brake shoe subassembly of piston promotion and by the outside brake shoe subassembly of pincers body promotion, inboard brake shoe subassembly includes clutch blocks I and sets up backplate I between clutch blocks I and piston, outside brake shoe subassembly includes clutch blocks II and sets up backplate II between clutch blocks II and the pincers body. A limiting boss is arranged on the back plate II, a limiting hole corresponding to the limiting boss is formed in the clamp body, and the limiting boss is inserted into the limiting hole.

The outboard brake pad assembly is sometimes referred to as a brake pad assembly and the inboard brake pad assembly is sometimes referred to as a counterpart brake pad assembly. The brake caliper assembly is provided with a bracket, and the outer brake block component is fixedly connected to the caliper body through a limiting boss and a limiting hole. The outer side of the brake disc is not limited by a support structure to the replacement of the hub disc assembly, so that the limitation to the replacement of the hub disc assembly in a radial space is reduced. However, since the limiting boss and the limiting hole form an annular limiting structure, when the hub disc assembly is not separated from the brake caliper assembly, the outer brake pad assembly cannot be taken out of the caliper body to provide axial space for the removal and replacement of the hub disc assembly, so that the hub disc assembly still needs to be removed after the whole brake caliper assembly is removed.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, provide a stopper, the technical problem of solution how can make the wheel hub dish assembly tear open when location brake block assembly and trade the convenience.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a brake, is including being used for with the braking block assembly of the lateral surface cooperation braking of brake disc and can span in the pincers body of brake disc, the pincers body includes the installation department fixed with braking block assembly, braking block assembly is including pasting the backplate that leans on in the installation department medial surface, the side relative with the installation department has convex lug on the backplate, a serial communication port, the location boss that is used for supporting the lug has on the installation department, detachable is fixed with and makes the lug keep leaning on the clamp plate in the boss of location on the top of installation department, the both sides that lie in the backplate on the medial surface of installation department have respectively with the locating piece that the backplate pasted, be provided with the groove of stepping down at the junction of locating piece and installation department on the medial surface of installation department, the backplate can insert and take out through the top of the pincers.

When the brake block assembly is installed, the back plate of the brake block assembly is inserted between the two positioning blocks through the top of the caliper body, the two sides of the back plate are respectively attached to the two positioning blocks, the side face, opposite to the installation portion, of the back plate is attached to the inner side face of the installation portion, the pressing plate is fixed to the top of the installation portion, and the bottom face of the protruding block is kept to be abutted to the positioning boss. Two locating pieces form the circumference location to the backplate, and the inboard face of installation department forms the axial spacing to the backplate, and spacing boss and lug and clamp plate form radial location to the backplate to make brake block assembly location install on the pincers body. The brake block assembly is located the outside of brake disc, when dismantling brake block assembly, dismantles the clamp plate from the installation department earlier, then with the backplate follow between two locating pieces through the top of the pincers body take out can. After the brake block assembly is taken out, an axial dismounting space is formed between the brake disc and the mounting part, and the bottom space of the mounting part is not provided with a bracket structure, so that a radial dismounting space occupied by the original bracket structure is increased between the brake disc and the caliper body, and the hub disc assembly can be dismounted from the axle under the condition of not dismounting the brake, so that the hub disc assembly is convenient to dismount and replace. And the groove of stepping down has the effect of stepping down, has avoided the backplate to take place to block at the junction of locating piece and installation department and has died, can not form accurate axial positioning between backplate and the installation department medial surface that prevents that the backplate card from dying to arouse to and can not form accurate circumference location between backplate and the locating piece, can also prevent simultaneously that the backplate can't follow smooth inserting and taking out between two locating pieces, guarantee brake block assembly location accuracy and easy dismounting. The brake structure can ensure that the hub disc assembly is convenient to disassemble and replace when the brake block assembly is positioned.

In the above brake, the top portions of the two sides of the back plate respectively protrude from the top surfaces of the corresponding positioning blocks. Like this can form the centre gripping point when tearing open and trade brake pads assembly in backplate both sides to make things convenient for the dismouting of brake pads assembly, make and tear open and trade hub disk assembly and can go on under the condition of not dismantling the stopper, make and tear open and trade hub disk assembly convenient.

In the above brake, the top surface of the positioning boss has a support plane, the protrusion abuts against the support plane, and edges of both sides of the positioning boss do not protrude out of the support plane. The both sides of lug do not have limit structure promptly, and the lug both sides provide the centre gripping point when tearing open and trade the brake block assembly on the one hand to make things convenient for the dismouting of brake block assembly, on the other hand has guaranteed the circumferential direction positioning action of two locating pieces, makes the brake block assembly location stable, avoids the lug lateral part to receive tangential force and arouses the crack and split even, guarantees the life of brake block assembly. The arrangement is beneficial to positioning the brake block assembly and is convenient for disassembling and replacing the hub disk assembly.

In the above brake, the bottom of the back plate protrudes the bottom surface of the mounting portion. On one hand, when the brake block assembly is disassembled, the brake block assembly can be ejected out from the bottom of the back plate, so that the brake block assembly is convenient to disassemble, and on the other hand, after the brake block assembly is disassembled from the installation part, enough radial disassembling and replacing space can be formed between the installation part and the brake disc, so that the hub disc assembly can be disassembled smoothly.

In the above brake, a concave mounting recess is provided at an inner side edge of the top surface of the mounting portion, the positioning boss is convexly provided at a bottom surface of the mounting recess, and the protrusion is located in the mounting recess. The arrangement of the mounting notch can reduce the weight of the caliper body on one hand, and on the other hand, the brake block assembly has a proper mounting height to be matched with a brake disc for braking, and the bottom of the back plate can protrude out of the bottom surface of the mounting part, so that the brake block assembly is convenient to eject.

In the brake, the two sides of the lug on the top surface of the back plate are respectively provided with a bulge, an elastic pressing strip arched in the direction deviating from the top surface of the back plate is fixed between the two bulges, and the pressing plate is abutted against the top of the elastic pressing strip. The elastic pressing strip deforms after being stressed and generates pressure on the back plate, so that the convex block is stably abutted against the supporting plane, and the brake block assembly is stably positioned in the radial direction.

In the above brake, the top surface of the bump is flush with the top surface of the back plate. The top surface of the convex block is flush with the top surface of the back plate, so that the anti-shearing performance of the convex block can be improved, the structural strength of the convex block is improved, and the service life of the brake block assembly is ensured.

In the above brake, the brake further includes a bracket and a pair of brake pad assemblies for braking in cooperation with the inner side surface of the brake disc, the bracket has a positioning groove at the top, the pair of brake pad assemblies are located in the positioning groove, the pressing plate acts on the pair of brake pad assemblies to keep the pair of brake pad assemblies abutting against the bottom surface of the positioning groove, the pair of brake pad assemblies can be inserted into and taken out of the positioning groove through the top of the caliper body, the bracket has fixing portions on both sides respectively, the front surface of the fixing portion has a matching surface capable of facing the brake disc, and the edge of the fixing portion does not protrude out of the matching surface.

The bracket is connected with the clamp body in a sliding mode and fixedly connected to the suspension through the fixing portion. When the paired brake block assembly is installed, the paired brake block assembly is inserted into the positioning groove from the top of the caliper body, the paired brake block assembly is abutted against the bottom surface of the positioning groove through the pressure plate to realize radial positioning, and two side walls of the positioning groove face the paired brake block assembly to realize circumferential positioning. When the paired brake block assembly is disassembled, the pressing plate is disassembled, and then the paired brake block assembly is taken out from the top of the caliper body. After the matched brake block assembly is taken out of the positioning groove, the positioning groove provides a certain dismounting space for dismounting and replacing the hub plate assembly. In addition, the edge of the fixing part does not protrude out of the matching surface, and the bracket does not limit the brake disc on the radial side, so that the interference generated by the disassembly and assembly of the bracket structure on the hub disc assembly is reduced, the operation of disassembling and replacing the hub disc assembly can be realized when the bracket is not disassembled, and the hub disc assembly can be conveniently disassembled and replaced. In addition, only the part of the bracket positioned on the inner side of the brake disc is in the structure, so that the weight of the brake can be reduced compared with the existing bracket, and the weight reduction of the automobile is facilitated.

In the above brake, the reverse side of the fixing portion has a convex mounting boss, and the mounting boss is provided with a positioning plane.

When the brake is installed, the positioning plane of the bracket is abutted against the suspension frame for positioning, and then the bracket is fixed on the suspension frame through the bolt on the suspension frame. The bracket is fixed to the suspension, the brake disc is fixed to the axle, and the positional relationship between the axle and the suspension is fixed, so that the positional relationship between the bracket and the brake disc is fixed. Because the locating plane is located the installation boss, and the installation boss protrusion sets up, makes the position installation of bracket accurate to make the position relation between bracket and the brake disc accurate, guarantee to have after the actual assembly between bracket and the brake disc and design enough tear open and trade the space, be favorable to making tearing open of wheel hub assembly trade conveniently.

In the brake, a convex limiting block is arranged on the outer side surface of at least one fixing part, a first bulge corresponding to the limiting block is arranged at least one position on the caliper body, and the first bulge is arranged opposite to the front surface of the limiting block.

The floating position of the caliper body is limited by the limiting block, so that the stability of the brake structure is prevented from being influenced by the excessive sliding of the caliper body, and the brake works stably.

Compared with the prior art, the utility model has the advantages of it is following:

set up the location boss on the installation department of the pincers body, the lug of backplate supports through the clamp plate and leans on the supporting plane in location boss top surface, through two locating piece circumference location backplates that lie in the backplate both sides on the pincers body, the backplate can insert and take out from between two locating pieces through the top of the pincers body, lie in on the medial surface of installation department and set up the recess of stepping down with the junction of locating piece, make when realizing brake pads assembly location the convenience of tearing open and changing of hub disk assembly. The top parts of the two sides of the back plate protrude out of the top surface of the positioning block, and the bottom part of the back plate protrudes out of the bottom surface of the mounting part, so that the brake block assembly can be conveniently taken out. The bracket is only provided with a structure positioned at the inner side of the brake disc, so that the weight of the brake is reduced, and the convenience in disassembling and replacing the hub disc assembly is facilitated.

Drawings

FIG. 1 is a perspective view of the present brake;

FIG. 2 is an exploded perspective view of the present brake;

FIG. 3 is a diagram showing the positional relationship between the present brake and a brake disc;

FIG. 4 is a schematic view of the hub disk assembly being disassembled on the present brake;

FIG. 5 is a partial perspective view of the brake at the caliper body mounting portion;

FIG. 6 is a perspective view of a brake pad assembly of the present brake;

FIG. 7 is a perspective view of the bracket of the present brake;

FIG. 8 is a partial perspective view of the positioning of the mounting portion and brake pad assembly of the present brake.

In the figure, 1, a clamp body; 1a, an installation part; 1a1, positioning boss; 1a2, support plane; 1a3, positioning block; 1a4, a relief groove; 1a5, mounting notch; 1b, a transmission part; 1c, a bridge; 1c1, a first projection; 1c2 and a second bulge; 1d, opening; 2. a brake pad assembly; 2 a; a back plate; 2a1, bumps; 2a2, bumps; 2b, a friction block; 2c, elastic pressing strips; 3. a mating brake pad assembly; 4. pressing a plate; 5. a bracket; 5a, positioning grooves; 5b, a fixing part; 5b1, mating surface; 5b2, mounting boss; 5b3, locating plane; 5b4 and a limiting block; 6. a brake disc; 7. a hub; 8. an axle.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1 to 8, a brake includes a caliper body 1 that can be placed across a brake disc 6, a pad assembly 2 for braking in cooperation with an outer side surface of the brake disc 6, a counterpart pad assembly 3 for braking in cooperation with an inner side surface of the brake disc 6, and a bracket 5. The caliper body 1 includes a mounting portion 1a fixed to the brake shoe assembly 2, a transmission portion 1b connected to the bracket 5, and a bridge portion 1c located between the mounting portion 1a and the transmission portion 1 b. The mounting portion 1a and the transmission portion 1b are located inside and outside the brake disk 6, respectively, and the bridge portion 1c is located on the outer peripheral side of the brake disk 6. Brake block assembly 2 is fixed connection on the medial surface of installation department 1a, installs drive mechanism in the drive division 1b, and the pairing brake block assembly 3 is connected with drive mechanism, and bracket 5 and drive division 1b sliding connection. A sliding pin is fixedly connected in the pin hole of the bracket 5, a sliding pin hole is arranged on the transmission part 1b, and the sliding pin penetrates through the sliding pin hole. An opening 1d is arranged on the top surface of the bridge part 1c, the circumferential width of the opening 1d is larger than that of the brake block assembly 2, the circumferential width of the opening 1d is larger than that of the brake block assembly 3, and the opening 1d extends to the mounting part 1a and the transmission part 1b in the axial direction, so that the brake block assembly 2 and the matched brake block assembly 2 can be inserted into and taken out from the opening 1 d.

The top of the bracket 5 is provided with a positioning groove 5a, the counterpart brake shoe assembly 3 is positioned in the positioning groove 5a, and the counterpart brake shoe assembly 3 can be inserted into and taken out of the positioning groove 5a through the top opening 1d of the caliper body 1. The bracket 5 has fixing portions 5b on both sides thereof, respectively, the fixing portions 5b having engaging surfaces 5b1 on the front surface thereof capable of opposing the brake disk 6, the edge of the fixing portions 5b not protruding beyond the engaging surfaces 5b 1. The fixing part 5b is provided with a convex mounting boss 5b2 on the surface opposite to the matching surface 5b1, namely the reverse surface of the fixing part 5b, and the mounting boss 5b2 is provided with a positioning plane 5b 3. An arched beam is arranged between the two fixing parts 5b and is positioned at the bottom of the positioning groove 5 a. Notches are arranged between the bottom surface of the positioning groove 5a and the two side wall surfaces of the positioning groove 5a, and each notch comprises a first groove arranged on the side wall surface of the positioning groove 5a and a second groove arranged on the bottom surface of the positioning groove 5 a. The wall surface of the first groove is an arc surface, the bottom surface of the second groove is a plane, the side wall surface of the second groove is an arc surface, and the wall surface of the first groove and the side wall surface of the second groove are in arc transition. The mating face 5b1 includes a mating plane that is disposed parallel to the locating plane 5b 3. A convex reinforcing boss is arranged at the notch of the positioning groove 5a on the matching plane, the top of the reinforcing boss extends to the side face of the top of the bracket 5, and the inner side part of the reinforcing boss extends to the arched beam. After the reinforcement projections are provided, the engagement surface 5b1 further includes a surface of the reinforcement projections facing the brake disk 6, which is planar and is disposed parallel to the engagement plane.

At least one fixing portion 5b has a protruding stopper 5b4 on the outer side surface, the front surface of the stopper 5b4 does not protrude the matching surface 5b1, the back surface of the stopper 5b4 does not protrude the back surface of the fixing portion 5b, preferably, the matching surface 5b1 protrudes the front surface of the stopper 5b4, and the back surface of the fixing portion 5b protrudes the back surface of the stopper 5b 4. At least one position of the bridge part 1c of the pliers body 1 is provided with a first protrusion 1c1 and a second protrusion 1c2 corresponding to the limiting block 5b4, the limiting block 5b4 is positioned between the first protrusion 1c1 and the second protrusion 1c2, the first protrusion 1c1 is opposite to the front side of the limiting block 5b4, and the second protrusion 1c2 is opposite to the back side of the limiting block 5b 4. The limiting block 5b4 limits the moving range of the caliper body 1, prevents the caliper body 1 and the bracket 5 from being separated in the use process of the brake, and enables the brake to be used stably. In some brakes, the protrusion two 1c2 may also be omitted.

The brake block assembly 2 comprises a back plate 2a which is abutted against the inner side surface of the mounting part 1a, the side surface of the back plate 2a opposite to the mounting part 1a is provided with a convex lug 2a1, and the top surface of the lug 2a1 is flush with the top surface of the back plate 2 a. The number of the projections 2a1 may be one or more, and is set as required. And a friction block 2b is fixed on the side surface of the back plate 2a opposite to the mounting part 1a, and the friction block 2b can be in contact with the brake disc 6 to brake. The mounting part 1a is provided with a positioning boss 1a1 for supporting the lug 2a1, the top surface of the positioning boss 1a1 is provided with a supporting plane 1a2, and the bottom surface of the lug 2a1 abuts against the supporting plane 1a 2. A concave mounting recess 1a5 is provided at the inner edge of the top surface of the mounting part 1a, a positioning boss 1a1 is provided protruding from the bottom surface of the mounting recess 1a5, and a projection 2a1 is located in the mounting recess 1a5 and supported on the positioning boss 1a 1. The bottom of the back plate 2a protrudes the bottom surface of the mounting portion 1 a.

The inner side surface of the mounting part 1a is provided with positioning blocks 1a3 respectively positioned at two sides of the back plate 2a and attached to the back plate 2a, the tops of the two sides of the back plate 2a respectively protrude to correspond to the top surfaces of the positioning blocks 1a3, and one surface of each of the two positioning blocks 1a3 opposite to the back plate 2a is arranged in parallel. On the inner side surface of the mounting part 1a, a relief groove 1a4 is provided at the connection between the positioning block 1a3 and the mounting part 1a, and the back plate 2a can be inserted into and taken out from between the two positioning blocks 1a3 through the top opening 1d of the caliper body 1. The top of the pliers body 1 is detachably fixed with a pressing plate 4, one end of the pressing plate 4 is inserted into the transmission part 1b, and the other end of the pressing plate 4 is fixedly connected to the top surface of the installation part 1a through a bolt. Or the two ends of the pressure plate 4 are fixedly connected to the transmission part 1b and the mounting part 1a through bolts respectively. The pressure plate 4 acts on the counter brake shoe assembly 3 to hold the counter brake shoe assembly 3 against the bottom surface of the positioning groove 5a, and the pressure plate 4 acts on the brake shoe assembly 2 to hold the projection 2a1 against the support plane 1a 2. The top of the back plate 2a is provided with protrusions 2a2 at two sides of the bump 2a1, an elastic pressing strip 2c which is arched towards the direction deviating from the top surface of the back plate 2a is fixed between the two protrusions 2a2, and the pressing plate 4 is abutted against the top of the elastic pressing strip 2 c.

When the brake block assembly 2 and the matched brake block assembly 3 are installed, a back plate 2a of the brake block assembly 2 is inserted between two positioning blocks 1a3 through an opening 1d at the top of a caliper body 1, two sides of the back plate 2a are respectively attached to the two positioning blocks 1a3, the back plate 2a is attached to the inner side surface of an installation part 1a, and a bump 2a1 is attached to a positioning boss 1a 1; inserting the matched brake block assembly 3 into the positioning groove 5a of the bracket 5, wherein the bottom surface of the matched brake block assembly 3 is abutted against the bottom surface of the positioning groove 5a, and meanwhile, the transmission mechanism is connected with the matched brake block assembly 2; and then the pressing plate 4 is fixed on the top of the caliper body 1, under the action of the pressing plate 4, the bottom surface of the projection 2a1 is kept to abut against the supporting plane 1a2 of the positioning boss 1a1, and the matched brake block assembly 3 is kept to abut against the bottom surface of the positioning groove 5 a. The two positioning blocks 1a3 form circumferential positioning for the back plate 2a, the inner side of the mounting part 1a forms axial position limitation for the back plate 2a, and the position limitation boss and projection 2a1 and the pressure plate 4 form radial positioning for the back plate 2a, so that the brake block assembly 2 is positioned and mounted on the caliper body 1.

The brake is fixedly connected to the suspension by the fixing portion 5b of the bracket 5, the brake disc 6 is fixedly connected to the hub 7 by a flange structure, the hub 7 is fixedly connected to the axle 8 by the inner bearing and the outer bearing, and the brake disc 6 and the hub 7 constitute a hub disc assembly, which can be disassembled without disassembling the bracket 5 as shown in fig. 3 and 4. When the hub disc assembly is disassembled, the pressure plate 4 is disassembled from the caliper body 1; then, the brake block assembly 2 is taken out from between the two positioning blocks 1a3 through the opening 1d at the top of the caliper body 1, and the matched brake block assembly 3 is taken out from the positioning groove 5a of the bracket 5 through the opening 1d at the top of the caliper body 1; then the inner ring of the outer bearing between the hub 7 and the axle 8 is removed, the hub disk assembly is moved outwards and downwards by a certain distance to separate the inner ring and the outer ring of the inner bearing between the hub 7 and the axle 8, and then the hub disk assembly is removed along the axle 8 while continuously tilting the hub disk assembly. The reverse operation is sufficient when mounting the hub plate assembly.

In the process of replacing the hub disc assembly, after the brake block assembly 2 is taken out, an axial replacing space is formed between the brake disc 6 and the mounting part 1a, the bottom space of the mounting part 1a is not provided with a bracket 5 structure, so that a radial replacing space occupied by the original bracket 5 structure is increased between the brake disc 6 and the caliper body 1, meanwhile, the edge of the fixing part 5b of the bracket 5 does not protrude out of the matching surface 5b1, the bracket 5 does not limit the brake disc 6 on the radial side, and the hub disc assembly can be detached from the axle 8 under the condition of not detaching the brake, so that the hub disc assembly is convenient to replace. And the groove of stepping down 1a4 has the effect of stepping down, it is dead to have avoided backplate 2a to take place the card in the junction of locating piece 1a3 and installation department 1a, backplate 2a that prevents 2a card from dying to arouse can not form accurate axial positioning with between the installation department 1a medial surface, and can not form accurate circumference location between backplate 2a and locating piece 1a3, can also prevent simultaneously that backplate 2a can't follow smooth insertion and taking out between two locating pieces 1a3, guarantee that brake block assembly 2 fixes a position accurately and easy dismounting. This stopper structure can make the hub disc assembly tear open and trade the convenience when location brake block assembly 2.

In the above description, the hub disk assembly is entirely removed from the axle 8, but it is needless to say that in the actual removal process, the hub 7 and the brake disk 6 may be removed from the axle 8 after the hub 7 is removed from the axle 8, and then the brake disk 6 may be removed from the axle 8 according to the hub disk assembly removal method.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A brake, including a brake block assembly (2) for cooperating with the outer side surface of a brake disc (6) to brake and a caliper body (1) capable of crossing the brake disc (6), wherein the caliper body (1) includes a mounting portion (1a) fixed with the brake block assembly (2), the brake block assembly (2) includes a back plate (2a) attached to the inner side surface of the mounting portion (1a), the side surface of the back plate (2a) opposite to the mounting portion (1a) has a protruding projection (2a1), characterized in that the mounting portion (1a) has a positioning boss (1a1) for supporting the projection (2a1), a pressing plate (4) detachably fixed on the top of the mounting portion (1a) for holding the projection (2a1) to abut against the positioning boss (1a1), and positioning blocks (1a3) attached to the back plate (2a) are respectively arranged on the two sides of the inner side surface of the mounting portion (1a), the utility model discloses a pliers, including installation portion (1a), backplate (2a) and the medial surface of installation portion (1a) are provided with the junction of locating piece (1a3) and installation portion (1a) and give way groove (1a4), backplate (2a) can insert and take out from between two locating pieces (1a3) through the top of pincers body (1).

2. The brake of claim 1, wherein the top of the two sides of the back plate (2a) respectively protrudes from the top surface of the corresponding positioning block (1a 3).

3. The brake of claim 1, characterized in that the top surface of the positioning boss (1a1) has a support plane (1a2), the projection (2a1) abuts against the support plane (1a2), and the edges of the two sides of the positioning boss (1a1) do not protrude out of the support plane (1a 2).

4. The brake of claim 1, characterized in that the bottom of the back plate (2a) protrudes beyond the bottom surface of the mounting portion (1 a).

5. The brake of any one of claims 1 to 4, characterized in that the mounting portion (1a) is provided at an inner edge of a top surface thereof with a concave mounting recess (1a5), the positioning boss (1a1) is provided to protrude from a bottom surface of the mounting recess (1a5), and the projection (2a1) is located in the mounting recess (1a 5).

6. A brake according to any one of claims 1-4, characterized in that the top surface of the backplate (2a) is provided with protrusions (2a2) on both sides of the protrusion (2a1), a resilient bead (2c) arched away from the top surface of the backplate (2a) is fixed between the two protrusions (2a2), and the pressure plate (4) abuts against the top of the resilient bead (2 c).

7. A brake according to any one of claims 1 to 4, characterized in that the top surface of the projection (2a1) is flush with the top surface of the backplate (2 a).

8. The brake of any one of claims 1 to 4, further comprising a bracket (5) and a pair of brake pad assemblies (3) for braking in cooperation with the inner side surfaces of the brake disc (6), wherein the bracket (5) has a positioning groove (5a) at the top, the pair of brake pad assemblies (3) are located in the positioning groove (5a), the pressure plate (4) acts on the pair of brake pad assemblies (3) to hold the pair of brake pad assemblies (3) against the bottom surfaces of the positioning groove (5a), the pair of brake pad assemblies (3) can be inserted into and removed from the positioning groove (5a) through the top of the caliper body (1), the bracket (5) has fixing portions (5b) on both sides, respectively, and the front surfaces of the fixing portions (5b) have engaging surfaces (5b1) capable of opposing the brake disc (6), the edge of the fixing part (5b) does not protrude beyond the mating surface (5b 1).

9. The brake of claim 8, characterized in that the fixing part (5b) has a projecting mounting boss (5b2) on the reverse side, and the mounting boss (5b2) is provided with a positioning plane (5b 3).

10. The brake of claim 8, characterized in that at least one of the fixing portions (5b) has a protruding stopper (5b4) on the outer side, and at least one of the caliper body (1) is provided with a first protrusion (1c1) corresponding to the stopper (5b4), and the first protrusion (1c1) is disposed opposite to the front surface of the stopper (5b 4).