CN211117257U

CN211117257U - Brake and brake block assembly

Info

Publication number: CN211117257U
Application number: CN201922218204.3U
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: 2020-07-28
Anticipated expiration: 2029-12-11

Abstract

The utility model provides a stopper and brake block assembly 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 includes the backplate, the back of backplate is pasted and is leaned on the medial surface in the installation department, convex lug has on the back of backplate, the locating surface that is used for supporting 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 locating surface, be provided with the constant head tank on the medial surface of installation department, the top surface that the installation department was run through to the top direction of installation department to the constant head tank forms the entry, still have on the back of backplate with constant head tank matched with locating piece, the locating piece. 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 and brake block assembly

Technical Field

The invention belongs to the technical field of brakes, and relates to a brake and a brake block assembly.

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 invention aims to provide a brake and a brake block assembly aiming at the problems in the prior art, and solves the technical problem of how to conveniently detach and replace a hub disc assembly while positioning the brake block assembly.

The purpose of the invention can be realized by the following technical scheme:

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 includes the backplate, the back of backplate is pasted and is leaned on the medial surface in the installation department, convex lug has on the back of backplate, a serial communication port, have the locating surface that is used for supporting the lug on the installation department, detachable is fixed with and makes the lug keep leaning on the clamp plate in the locating surface on the top of installation department, be provided with the constant head tank on the medial surface of installation department, the constant head tank runs through the top surface of installation department and forms the entry to the top direction of installation department, still have on the back of backplate with constant head tank matched with locating piece, the locating piece can be.

When the brake block assembly is installed, the back plate of the brake block assembly is inserted from the top of the caliper body, the positioning block is embedded into the positioning groove through the inlet, the back surface of the back plate is attached to the inner side surface of the installation part, and the pressing plate is fixed to the top of the installation part, so that the bottom surface of the protruding block is kept to abut against the positioning surface. After the locating piece was embedded into the constant head tank, the lateral wall of constant head tank that is located the locating piece both sides formed circumference location in the face of the backplate, and the inboard of installation department forms the axial spacing in the face of the backplate, and locating surface 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, takes out the backplate from the top of pincers body again, makes the locating piece take out the constant head tank through the entry. 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. The locating piece sets up on the backplate, and the constant head tank setting just enters the mouth on the medial surface of installation department and sets up on the top of installation department, and the constant head tank can enough realize the location of brake pads assembly with the locating piece cooperation, can avoid setting up again on the medial surface of installation department and hinder the part that the hub disk assembly was torn open and is traded to make the hub disk assembly tear open and trade the convenience when realizing the location. 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 positioning groove penetrates the bottom surface of the mounting portion in a direction of the bottom of the mounting portion and forms an outlet.

The setting up of export makes the lateral wall of constant head tank can not cause the interference to backplate location in radial, guarantees that the lug on the backplate supports on the locating surface of installation department, makes backplate radial positioning stable.

In the above brake, the top of the positioning block is located at or extends out of the inlet, and the bottom of the positioning block extends out of the outlet.

The top of locating piece is located the entrance or stretches out the entry, and the bottom of locating piece stretches out from the export, makes the locating piece have better anti-shear property, guarantees that the backplate can bear tangential shear force when brake block assembly brakes with the brake disc contact, makes the circumference location of brake block assembly on the installation department stable.

In the above brake, a gap is provided between the positioning block and the bottom surface of the positioning groove.

The setting in clearance can avoid the bottom surface of locating piece and constant head tank to take place to interfere, thereby guarantee that the backplate pastes and carries out axial positioning on the medial surface at the installation department, make brake pads assembly axial positioning stable, and can prevent to take place frictional wear when backplate and installation department relative motion between the bottom surface of locating piece and constant head tank, the resistance when reducing brake pads assembly and carrying out the dismouting on the pincers body, make brake pads assembly easy dismounting from the pincers body, brake pads assembly tear out smoothly also make the taking out of wheel hub dish assembly tear open and trade the convenience.

In the above brake, two positioning blocks are provided and located on two sides of the bump respectively. The back plate and the mounting part are stably positioned by the arrangement, the back plate is uniformly stressed when the brake block assembly is contacted with a brake disc for braking, and the braking effect of the brake block assembly is ensured.

In the brake, the positioning block and the bump are separately arranged, or the positioning block is directly connected with the bump and a abdicating groove is arranged at the connection position of the positioning block and the bump.

Because the lug is used for the radial positioning of backplate, the locating piece is used for the circumference location of backplate, and the position that can reduce to arouse installation interference is set up separately to locating piece and lug, makes brake block assembly location stable and easy dismounting. The positioning block is directly connected with the convex block, the structural strength between the positioning block and the convex block can be improved, the anti-shearing performance of the positioning block and the convex block is improved, the structure of the brake block assembly is stable, the arrangement of the abdicating groove can reduce the installation interference caused by the connection of the positioning block and the convex block, and the brake block assembly is stable in positioning and convenient to disassemble and assemble.

In the brake, a large notch is formed in the edge of the inner side of the top of the mounting portion, a small notch is formed in the bottom surface of the large notch in a concave mode, the bottom surface of the small notch is the positioning surface, the protruding block is located in the small notch, and the top of the protruding block extends out of the large notch.

The large notch and the small notch are arranged, so that the weight of the caliper body can be reduced, the brake block assembly is enabled to have a proper mounting height to be matched with a brake disc for braking, the bottom of the back plate can protrude out of the bottom surface of the mounting portion, and the brake block assembly is convenient to eject during disassembly.

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, the two sides of the projection on the top surface of the back plate are respectively provided with a protrusion, an elastic pressing strip arched in a direction deviating from the top surface direction of the back plate is fixed between the two protrusions, and the pressing plate abuts 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 positioning surface, and the brake block assembly is stably positioned in the radial direction.

In the above stopper, the top surface of the bump is flush with the top surface of the back plate. The top surface of the lug is flush with the top surface of the back plate, so that the radial shear resistance of the lug is improved, the structural strength of the lug 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 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. 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.

The utility model provides a brake block assembly, installs on the pincers body of stopper, the pincers body includes the installation department, and brake block assembly includes the backplate that can paste with the medial surface of installation department, be provided with on the back of backplate and support in the lug of installation department, a serial communication port, be provided with the constant head tank on the medial surface of installation department, the constant head tank runs through the top surface of installation department and forms the entry to the top direction of installation department, still have on the back of backplate can with constant head tank matched with locating piece, the locating piece can be through the entry embedding and take out the constant head tank.

The brake block assembly can be radially positioned through the lug and the mounting part, the back of the back plate and the mounting part form axial limiting, and the positioning block and the mounting part form circumferential positioning, so that the brake block assembly can be positioned on the caliper body. The locating piece can be followed the entry embedding and taken out the constant head tank, makes the locating piece can enough realize the location of brake pads assembly with the constant head tank cooperation, can take out the pincers body with the locating piece assembly again, vacates the axial and tears open and trade the space, avoids brake pads assembly to hinder tearing open of wheel hub assembly and changing to make the wheel hub assembly tear open and trade the convenience when realizing the location. The positioning brake block assembly can be positioned on the caliper body, and the hub disc assembly is convenient to disassemble and replace.

In the brake pad assembly, the top surface of the projection is flush with the top surface of the backing plate, and the bottom surface of the positioning block is flush with the bottom surface of the backing plate.

The top surface of the lug is flush with the top surface of the back plate, so that the radial shearing resistance of the lug is improved, the structural strength of the lug is improved, the bottom surface of the positioning block is flush with the bottom surface of the back plate, the circumferential shearing resistance of the positioning block is improved, the structural strength of the positioning block is improved, and the service life of the brake pad assembly is ensured.

In the brake pad assembly, the positioning block and the bump are separately arranged, or the positioning block is directly connected with the bump and a abdicating groove is arranged at the connection position of the positioning block and the bump.

In the brake pad assembly, two positioning blocks are arranged and are respectively positioned at two sides of the lug. The back plate and the mounting part are stably positioned by the arrangement, the back plate is uniformly stressed when the brake block assembly is contacted with a brake disc for braking, and the braking effect of the brake block assembly is ensured.

Compared with the prior art, the invention has the following advantages:

set up the locating surface on the installation department of the pincers body, the lug of backplate supports through the clamp plate and leans on in the locating surface, through the locating piece circumference location backplate on the constant head tank on the installation department medial surface and the backplate, and the constant head tank sets up the entry in the top department of installation department, and the locating piece can insert and take out the constant head tank through the entry, makes the removing of hubcap assembly convenient when realizing braking block assembly location. The bottom department of constant head tank at the installation department sets up the export, has the clearance between the bottom surface of locating piece and constant head tank, makes brake block assembly location stable and easy dismounting. 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 first perspective view of a first embodiment of the brake;

FIG. 2 is a second perspective view of the first embodiment of the brake;

FIG. 3 is a perspective view of the brake of the first embodiment;

FIG. 4 is a diagram of the position of the first embodiment of the brake in relation to the brake disc;

FIG. 5 is a schematic view of the hub assembly being disassembled in the first brake embodiment;

FIG. 6 is a perspective view of a brake pad assembly with a hidden resilient bead according to one embodiment of the brake;

FIG. 7 is a perspective view of a bracket in the first brake embodiment;

FIG. 8 is a partial perspective view of the positioning of the mounting portion and brake pad assembly in a first embodiment of the brake;

FIG. 9 is an exploded perspective view of a second embodiment of the brake;

FIG. 10 is a perspective view of a brake pad assembly with a hidden resilient bead according to a second embodiment of the brake.

In the figure, 1, a clamp body; 1a, an installation part; 1a1, large notch; 1a2, small notch; 1a3, a positioning surface; 1a4, positioning groove; 1a5, inlet; 1a6, outlet; 1b, a transmission part; 1c, a bridge; 1c1, a first projection; 1c2 and a second bulge; 1d, opening; 2. a brake pad assembly; 2a, a back plate; 2a1, bumps; 2a2, positioning block; 2a3, gap; 2a4, bumps; 2a5, a relief groove; 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 are further described with reference to the drawings, 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 outside and inside 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 penetrating through the bottom surface of the bridge portion 1c is arranged on the top surface of the bridge portion 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 portion 1a and the transmission portion 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 mounting boss 5b2 which protrudes out of the edge of the fixing part 5b on the surface opposite to the matching surface 5b1, 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. An avoiding notch is arranged between the bottom surface of the positioning groove 5a and two side wall surfaces of the positioning groove 5a, and the avoiding 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 an avoiding 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 floating position of the caliper body 1 is limited by the limiting block 5b4, so that the stability of the brake structure is prevented from being excessively influenced by the sliding of the caliper body 1, and the brake works stably. In some brakes, the protrusion two 1c2 may also be omitted.

The brake pad assembly 2 comprises a back plate 2a which abuts against the inner side surface of the mounting part 1a, and a convex projection 2a1 is arranged on the side of the back plate 2a abutting against the mounting part 1a, namely the back surface of the back plate 2a, and the top surface of the projection 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, namely the front surface of the back plate 2a, and the friction block 2b can be in contact with the brake disc 6 to brake. The mounting portion 1a has a positioning face 1a3 for supporting the projection 2a1, and the bottom surface of the projection 2a1 abuts against the positioning face 1a 3. The inner edge of the top surface of the mounting part 1a is provided with a concave large notch 1a1, the bottom surface of the large notch 1a1 is provided with a small notch 1a2 in a concave mode, the bottom surface of the small notch 1a2 is a positioning surface 1a3, the bump 2a1 is embedded in the small notch 1a2, and the top of the bump 2a1 extends out of the large notch 1a 1. Be provided with on the medial surface of installation department 1a and be strip constant head tank 1a4, two lateral wall faces parallel arrangement of constant head tank 1a4, constant head tank 1a4 sets up with locating surface 1a3 is perpendicular, and two lateral wall faces of constant head tank 1a4 set up with locating surface 1a3 is perpendicular promptly. The positioning slot 1a4 penetrates the bottom surface of the large notch 1a1 towards the top of the mounting part 1a and forms an inlet 1a5, the back of the back plate 2a is also provided with a strip-shaped positioning block 2a2 matched with the positioning slot 1a4, and the positioning block 2a2 can be inserted into and taken out of the positioning slot 1a4 through the inlet 1a 5. Positioning block 2a2 is embedded into positioning slot 1a4, two side surfaces of positioning block 2a2 are arranged in parallel, two side surfaces of positioning block 2a2 are respectively attached to two side wall surfaces of positioning slot 1a4, and the top of positioning block 2a2 of positioning block 2a2 is located at inlet 1a5 or extends out of inlet 1a 5. A gap 2a3 is formed between the back surface of the positioning block 2a2 and the bottom surface of the positioning groove 1a4, and the back surface of the positioning block 2a2 and the bottom surface of the positioning groove 1a4 are arranged in parallel. The bottom of the back plate 2a protrudes out of the bottom surface of the mounting part 1a, the positioning groove 1a4 penetrates through the bottom surface of the mounting part 1a towards the bottom of the mounting part 1a and forms an outlet 1a6, the bottom of the positioning block 2a2 extends out of the outlet 1a6, and the bottom surface of the positioning block 2a2 is flush with the bottom surface of the back plate 2 a. The rounded transition between the bottom surface of positioning block 2a2 and the two sides of positioning block 2a2 facilitates the insertion of positioning block 2a2 into positioning slot 1a4 from inlet 1a 5. The positioning blocks 2a2 are disposed separately from the protrusion 2a1, and two positioning blocks 2a2 are disposed on two sides of the protrusion 2a 1. The number of the positioning blocks 2a2 may be increased or decreased depending on the number.

The top of the clamp body 1 is detachably fixed with a pressure plate 4, one end of the pressure plate 4 is inserted into the transmission part 1b, and the other end of the pressure 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 positioning surface 1a 3. The top of the back plate 2a is provided with protrusions 2a4 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 2a4, 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 brake block assembly 3 are installed, a back plate 2a of the brake block assembly 2 is inserted through an opening 1d at the top of the caliper body 1, a positioning block 2a2 is embedded into a positioning groove 1a4 through the opening 1d, the back plate 2a is attached to the inner side surface of the installation part 1a, and a projection 2a1 is embedded into a small notch 1a2 and is attached to a positioning surface 1a 3; inserting the matched brake block assembly 3 from the top opening 1d of the caliper body 1 and into the positioning groove 5a of the bracket 5, wherein the bottom surface of the matched brake block assembly 3 abuts against the bottom surface of the positioning groove 5a, and meanwhile, the transmission mechanism is connected with the matched brake block assembly 2; 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 convex block 2a1 is kept to abut against the positioning surface 1a3, and the matched brake block assembly 3 is kept to abut against the bottom surface of the positioning groove 5 a. The cooperation of the positioning slot 1a4 and the positioning block 2a2 forms a circumferential positioning for the backing plate 2a, the inner side of the mounting portion 1a forms an axial limit for the backing plate 2a, and the positioning surface 1a3, the projection 2a1 and the pressure plate 4 form a radial positioning for the backing plate 2a, so that the brake pad 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 disk 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 disk 6 and the hub 7 constitute a hub disk assembly, which can be disassembled without disassembling the bracket 5 as shown in fig. 4 and 5. 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 through the opening 1d at the top of the caliper body 1, the positioning block 2a2 is separated from the positioning groove 1a4, 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 pad 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 has no 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, and meanwhile, the edge of the fixing part 5b of the bracket 5 does not protrude out of the matching surface 5b1, so that the bracket 5 does not limit the brake disc 6 on the radial side. In addition, the positioning block 2a2 is arranged on the back plate 2a, the positioning groove 1a4 is arranged on the inner side surface of the mounting portion 1a, and the opening 1d is arranged on the top of the mounting portion 1a, the positioning groove 1a4 can be matched with the positioning block 2a2 to realize the positioning of the brake pad assembly 2, and can avoid the arrangement of a part which prevents the hub disc assembly from being disassembled and replaced on the inner side surface of the mounting portion 1a, therefore, the bottom and two sides of the mounting portion 1a are not provided with other protruding structures which can prevent the brake disc 6 from being disassembled and assembled, the structure of the mounting portion 1a also enables the radial disassembling and replacing space and the axial disassembling and replacing space of the hub disc assembly to be increased, so that the hub disc assembly can be disassembled from the axle 8 without disassembling the brake, and the hub disc assembly is. 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.

Example two

As shown in fig. 9 and 10, the positions of the positioning block 2a2 and the positioning groove 1a4 are different from those of the first embodiment, and the other structures are the same as those of the first embodiment. The positioning block 2a2 is directly connected with the projection 2a1, the connecting part of the positioning block 2a2 and the projection 2a1 is provided with a relief groove 2a5, and the inlet 1a5 of the positioning groove 1a4 is connected with the small notch 1a 2.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended 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), the back surface of the back plate (2a) is attached to the inner side surface of the mounting portion (1a), and the back surface of the back plate (2a) is provided with a convex projection (2a1), characterized in that the mounting portion (1a) is provided with a positioning surface (1a3) for supporting the projection (2a1), a pressure plate (4) detachably fixed on the top of the mounting portion (1a) for keeping the projection (2a1) attached to the positioning surface (1a3), and a positioning groove (1a4) is provided on the inner side surface of the mounting portion (1a), the positioning groove (1a4) penetrates through the top surface of the mounting part (1a) towards the top direction of the mounting part (1a) and forms an inlet (1a5), the back surface of the back plate (2a) is further provided with a positioning block (2a2) matched with the positioning groove (1a4), and the positioning block (2a2) can be embedded into and taken out of the positioning groove (1a4) through the inlet (1a 5).

2. The brake of claim 1, characterized in that the positioning groove (1a4) penetrates the bottom surface of the mounting part (1a) in the direction of the bottom of the mounting part (1a) and forms an outlet (1a 6).

3. Brake according to claim 2, characterized in that the top of the positioning block (2a2) is located at the inlet (1a5) or protrudes out of the inlet (1a5), and the bottom of the positioning block (2a2) protrudes out of the outlet (1a 6).

4. A brake according to any one of claims 1-3, characterized in that there is a gap (2a3) between the locating block (2a2) and the bottom surface of the locating slot (1a 4).

5. A brake according to any one of claims 1-3, characterized in that a large notch (1a1) is arranged at the inner side edge of the top of the mounting part (1a), a small notch (1a2) is arranged on the bottom surface of the large notch (1a1) in a concave manner, the bottom surface of the small notch (1a2) is the positioning surface (1a3), the lug (2a1) is positioned in the small notch (1a2), and the top of the lug (2a1) extends out of the large notch (1a 1).

6. The brake of any one of claims 1 to 3, 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).

7. The brake of claim 6, 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).

8. The utility model provides a brake block assembly, installs on the pincers body (1) of stopper, pincers body (1) is including installation department (1a), and brake block assembly (2) are including backplate (2a) that can paste with the medial surface of installation department (1a) and lean on, be provided with lug (2a1) that can support in installation department (1a) on the back of backplate (2a), its characterized in that, be provided with constant head tank (1a4) on the medial surface of installation department (1a), constant head tank (1a4) run through the top surface of installation department (1a) and form entry (1a5) to the top direction of installation department (1a), still have on the back of backplate (2a) can with constant head tank (1a4) matched with locating piece (2a2), locating piece (2a2) can be through entry (1a5) embedding and take out constant head tank (1a 4).

9. Brake pad assembly according to claim 8, wherein the top surface of the protrusion (2a1) is flush with the top surface of the backing plate (2a) and the bottom surface of the locating block (2a2) is flush with the bottom surface of the backing plate (2 a).

10. Brake pad assembly according to claim 8 or 9, wherein the positioning block (2a2) is provided separately from the projection (2a1), or the positioning block (2a2) is directly connected to the projection (2a1) and a relief groove (2a5) is provided where the positioning block (2a2) is connected to the projection (2a 1).