Brake caliper assembly

Abstract

The utility model discloses a brake caliper body assembly, which comprises a caliper body, a brake caliper body, a brake caliper body and a brake caliper body, a mounting cavity is defined by the caliper body, and the mounting cavity is provided with two first wall surfaces which are oppositely arranged in the front-back direction; the friction plate back plate is arranged in the mounting cavity, and gaps are formed between the front end face and the rear end face of the friction plate back plate and the two first wall faces; the friction plate is fixed to the surface of the side, facing a brake disc in the left-right direction, of the friction plate back plate. The elastic pieces are fixed to the front end and the rear end of the friction plate back plate and make contact with the first wall face. According to the brake caliper body assembly, collision between the friction plate back plate and the caliper body can be avoided when a vehicle is accelerated or braked, so that the collision noise between the friction plate back plate and the caliper body is effectively eliminated, and the use experience of a user is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially is related to a brake caliper body assembly. BACKGROUND

[0002] With the development of electric vehicle industry, the acceleration performance of the vehicle is improved, and the braking performance of the vehicle is also improved accordingly. The fixed brake caliper is applied more and more widely in new vehicle models. In the prior art, for the fixed brake caliper of the traditional structure, due to the braking and assembly requirements, a certain movement space is left between the friction plate back plate and the caliper body, which makes the friction plate in the fixed caliper move back and forth in the process of repeated forward and backward movement of the vehicle, thereby causing the friction plate back plate to hit the brake caliper, producing metal knocking sound, and further affecting the user experience. SUMMARY

[0003] The utility model aims at solving one of the technical problems in the prior art. To this end, the utility model provides a brake caliper body assembly, which can avoid the collision between the friction plate back plate and the caliper body when the vehicle accelerates or brakes, thereby effectively eliminating the impact noise of the friction plate back plate and the caliper body, and further effectively improving the user experience.

[0004] According to the brake caliper body assembly of the utility model, the brake caliper body assembly comprises: a caliper body, the caliper body defines an installation cavity, the installation cavity has two first wall surfaces oppositely arranged in the front-back direction; a friction plate back plate, the friction plate back plate is arranged in the installation cavity, and a gap is formed between the front and rear end faces of the friction plate back plate and the two first wall surfaces; a friction plate, the friction plate is fixed to the side surface of the friction plate back plate facing the brake disc in the left-right direction; and an elastic member, the elastic member is fixed to the front and rear ends of the friction plate back plate and is in contact with the first wall surface.

[0005] According to the brake caliper body assembly of the utility model, by arranging the caliper body, the friction plate back plate, the friction plate and the elastic member in the brake caliper body assembly, the caliper body defines an installation cavity, the installation cavity has two first wall surfaces oppositely arranged in the front-back direction, the friction plate back plate is arranged in the installation cavity, a gap is formed between the front and rear end faces of the friction plate back plate and the two first wall surfaces, the friction plate is fixed to the side surface of the friction plate back plate facing the brake disc in the left-right direction, and the elastic member is fixed to the front and rear ends of the friction plate back plate and is in contact with the first wall surface. When the vehicle accelerates or brakes, the collision between the friction plate back plate and the caliper body can be avoided, thereby effectively eliminating the impact noise of the friction plate back plate and the caliper body, and further effectively improving the user experience.

[0006] In some embodiments, the elastic pieces are elastic sheets, and the number of the elastic sheets is multiple, and the multiple elastic sheets are symmetrically arranged at the front and rear ends of the back plate of the friction plate.

[0007] In some embodiments, the elastic pieces extend in the front-rear direction, and the elastic pieces are formed with bending portions bent towards one side in the thickness direction of the elastic pieces, and the number of the bending portions is one or multiple arranged in the front-rear direction.

[0008] In some embodiments, the number of the bending portions is multiple, and the stiffness of at least two of the bending portions is different.

[0009] In some embodiments, in the front-rear direction, the bending portions extend along a circular arc line protruding towards one side in the thickness direction of the elastic pieces.

[0010] In some embodiments, in the direction from the first wall surface towards the back plate of the friction plate, the radii of the circular arcs of the multiple bending portions gradually increase.

[0011] In some embodiments, the elastic pieces include multiple extension segments arranged in the front-rear direction, two adjacent extension segments are connected by the bending portion, and the two extension segments connected at both sides of the bending portion are arranged at an included angle.

[0012] In some embodiments, the elastic pieces are formed with mounting holes, the elastic pieces are riveted to the back plate of the friction plate through the mounting holes; and / or, the back plate of the friction plate is formed with recessed mounting grooves on the side surface away from the friction plate in the left-right direction, the mounting grooves penetrate the end along the first wall surface of the back plate of the friction plate, and one end of the elastic piece is fixed in the mounting groove.

[0013] In some embodiments, the brake caliper body assembly further comprises: a pin shaft fixed to the caliper body, the pin shaft is arranged in the mounting cavity and extends in the left-right direction, the number of the pin shafts is multiple, the multiple pin shafts are arranged at intervals in the front-rear direction, the back plate of the friction plate is formed with guide holes penetrating the back plate of the friction plate in the left-right direction, the guide holes are long strip-shaped holes extending in the front-rear direction, the number of the guide holes is multiple and corresponds to the number of the pin shafts, and the back plate of the friction plate is sleeved on the pin shafts through the guide holes and is movable relative to the pin shafts in the front-rear direction.

[0014] In some embodiments, the number of the back plates of the friction plate is two, the two back plates of the friction plate are symmetrically arranged in the left-right direction, and the number of the friction plates is two, the two friction plates are arranged on the opposite side surfaces of the two back plates of the friction plate, respectively.

[0015] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be learned by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic view of a brake caliper body assembly according to an embodiment of the present application;

[0017] Figure 2 is a schematic view of one angle of a friction plate back plate according to an embodiment of the present application;

[0018] Figure 3 is a schematic view of another angle of a friction plate back plate according to an embodiment of the present application;

[0019] Figure 4 is a schematic view of an elastic member according to an embodiment of the present application.

[0020] REFERENCE NUMERALS:

[0021] 100, brake caliper body assembly;

[0022] 10, caliper body; 101, mounting cavity; 1011, first wall surface;

[0023] 20, friction plate back plate; 201, mounting groove;

[0024] 30, friction plate;

[0025] 40, elastic member; 41, bending part; 41a, first bending part; 41b, second bending part; 41c, third bending part; 42, extension section; 42a, first extension section; 42b, second extension section; 42c, third extension section; 42d, fourth extension section; 401, mounting hole;

[0026] 50, pin shaft. DETAILED DESCRIPTION

[0027] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0028] The following description refers to the accompanying drawings that show embodiments of the present application. Figures 1-4 The brake caliper body assembly 100 according to an embodiment of the present application is described below.

[0029] As Figures 1-4As shown, according to the brake caliper body assembly 100 of the embodiment of the utility model, the brake caliper body assembly 100 comprises: a caliper body 10, a friction plate back plate 20, a friction plate 30 and an elastic member 40.

[0030] The caliper body 10 defines an installation cavity 101, and the installation cavity 101 has two first wall surfaces 1011 oppositely arranged in the front-rear direction; the friction plate back plate 20 is arranged in the installation cavity 101, and the front-rear two end faces of the friction plate back plate 20 have gaps with the two first wall surfaces 1011; the friction plate 30 is fixed to the side surface of the friction plate back plate 20 facing the brake disc in the left-right direction; and the elastic member 40 is fixed to the front-rear two ends of the friction plate back plate 20 and is in contact with the first wall surface 1011.

[0031] In one specific example, as shown in Figure 1 The top of the installation cavity 101 of the caliper body 10 is open, the friction plate back plate 20 and the friction plate 30 on the friction plate back plate 20 are arranged in the installation cavity 101, so that the caliper body 10 can provide reliable installation space for the friction plate back plate 20 and the friction plate 30. Figure 1 and Figure 3 As shown, the front end of the friction plate back plate 20 and the front side of the first wall surface 1011 are provided with the elastic member 40, and the rear end of the friction plate back plate 20 and the rear side of the first wall surface 1011 are also provided with the elastic member 40, that is, the two ends of the friction plate back plate 20 are provided with the elastic member 40 between the front-rear two first wall surfaces 1011.

[0032] In one specific example, as shown in Figure 1 The brake caliper body assembly 100 is installed in a vehicle, specifically, a steering knuckle, a hub, a brake disc and a wheel are arranged in the vehicle, the brake disc is fixedly connected to the hub through bolts, that is, the brake disc can rotate synchronously with the wheel, the caliper body 10 is fixedly connected to the steering knuckle through bolts, and the friction plate back plate 20 is arranged on both sides of the brake disc in the left-right direction.

[0033] The brake caliper body assembly 100 further comprises a piston, the piston is arranged on the side of the friction plate back plate 20 away from the brake disc, further, the piston is connected to a hydraulic system, and a user can drive the piston to move by stepping on a brake pedal to drive the hydraulic system, so as to drive the left and right friction plate back plates 20 to move towards each other, and then the friction plate 30 can be in contact with the brake disc, so as to complete the braking of the vehicle.

[0034] It should be noted that in the prior art, due to the assembly requirements of the vehicle brake and the friction plate back plate 20, a certain movement space is left between the front and rear end faces of the friction plate back plate 20 and the two first wall faces 1011, which makes the friction plate back plate 20 move back and forth in the mounting cavity 101 of the caliper body 10 during repeated forward and backward movement of the vehicle, thereby causing the friction plate back plate 20 to repeatedly impact the two first wall faces 1011, generating impact noise.

[0035] In the present embodiment, when the vehicle accelerates or brakes, the friction plate back plate 20 has a tendency to move backward or forward relative to the caliper body 10. Since the two ends of the friction plate back plate 20 are provided with elastic members 40 between the front and rear first wall faces 1011, the elastic members 40 can effectively absorb the kinetic energy of the friction plate back plate 20 through their deformation, preventing hard contact between the friction plate back plate 20 and the caliper body 10, thereby effectively protecting the friction plate back plate 20 and the caliper body 10 and effectively eliminating the noise generated by the impact, thereby effectively improving the comfort and satisfaction of the driver.

[0036] According to the brake caliper body assembly 100 of the present embodiment, by arranging the caliper body 10, the friction plate back plate 20, the friction plate 30 and the elastic member 40 in the brake caliper body assembly 100, the caliper body 10 defines a mounting cavity 101, the mounting cavity 101 has two first wall faces 1011 arranged opposite in the front and rear directions, the friction plate back plate 20 is arranged in the mounting cavity 101, the front and rear end faces of the friction plate back plate 20 have gaps between the two first wall faces 1011, the friction plate 30 is fixed to the side surface of the friction plate back plate 20 facing the brake disc in the left and right directions, and the elastic member 40 is fixed to the front and rear ends of the friction plate back plate 20 and in contact with the first wall face 1011. When the vehicle accelerates or brakes, the elastic member 40 can prevent the friction plate back plate 20 from colliding with the caliper body 10, thereby effectively eliminating the impact noise of the friction plate back plate 20 and the caliper body 10, and further effectively improving the user's experience.

[0037] Preferably, the caliper body 10 is made of aluminum alloy. It should be noted that aluminum alloy is an alloy material composed of aluminum as the base and one or more alloying elements. By adding different alloying elements, the mechanical properties of aluminum can be significantly improved, such as increasing strength, hardness and wear resistance, while maintaining its light weight and corrosion resistance. Generally speaking, aluminum alloy has the advantages of high specific strength, light weight, low cost, easy processing, corrosion resistance and recyclability.

[0038] Preferably, the friction plate back plate 20 is made of steel, thereby effectively improving the structural strength and wear resistance of the friction plate back plate 20, thereby effectively prolonging the service life of the friction plate back plate 20. Further, the friction plate back plate 20 can be made by stamping process, it should be noted that the stamping process is a forming process, the metal plate is processed into the required shape by the mold, for the friction plate back plate 20, the stamping process can efficiently produce parts with complex geometry, while ensuring good dimensional accuracy and surface quality.

[0039] Preferably, the friction plate 30 is made of composite material, the selection of the composite material can be based on factors such as braking effect, noise level and service life, which can effectively improve the friction performance, wear characteristics and thermal stability of the friction plate 30. Further, the friction plate 30 can be pressed on the friction plate back plate 20 by hot forming process, thereby effectively ensuring that the friction plate 30 and the friction plate back plate 20 can form a solid whole, thereby effectively improving the braking efficiency and safety.

[0040] In an embodiment of the utility model, as shown in Figure 3 and Figure 4 , the elastic member 40 is a spring, and the number of springs is multiple, and the multiple springs are symmetrically arranged at the front and rear ends of the friction plate back plate 20. In a specific example, the material of the spring is 65Mn.

[0041] It should be noted that 65Mn is a commonly used spring steel, and 65Mn has high yield strength and tensile strength, so that the spring can withstand a large stress without excessive deformation. At the same time, 65Mn has excellent elastic modulus, that is, the spring can quickly recover to its original shape after deformation, which can effectively ensure the stability and durability of the spring under repeated stress. In addition, 65Mn also has good toughness and wear resistance, thereby effectively improving safety and service life.

[0042] For example, the number of springs can be two, four, six, eight and more than ten, and the multiple springs are symmetrically arranged at the front and rear ends of the friction plate back plate 20. In a specific example, as shown in Figure 3 , the number of springs is four, two of which are arranged at the front end of the friction plate back plate 20, and the other two are arranged at the rear end of the friction plate back plate 20.

[0043] When the friction plate back plate 20 moves forward relative to the caliper body 10, the spring between the front end of the friction plate back plate 20 and the caliper body 10 can absorb the kinetic energy of the friction plate back plate 20 by its own deformation. When the friction plate back plate 20 moves backward relative to the caliper body 10, the spring between the rear end of the friction plate back plate 20 and the caliper body 10 can absorb the kinetic energy of the friction plate back plate 20 by its own deformation.

[0044] Because the plurality of elastic sheets are symmetrically arranged, the force received by the friction plate back plate 20 can be evenly distributed, thereby avoiding the problems of tilting or eccentric wear caused by uneven force on one side of the friction plate back plate 20, and effectively improving the stability of the friction plate back plate 20 under different working conditions and reducing unnecessary vibration.

[0045] The plurality of elastic sheets are symmetrically arranged at the front and rear ends of the friction plate back plate 20, which can balance the force received by the friction plate back plate 20, thereby effectively improving the stability and reliability of the friction plate back plate 20.

[0046] In an embodiment of the present application, as shown in Figure 4 The elastic sheet extends in the front-rear direction, and the elastic sheet is formed with a bending portion 41 bent to one side in the thickness direction of the elastic sheet. The number of bending portions 41 is one or a plurality arranged in the front-rear direction.

[0047] For example, the number of bending portions 41 can be one; for another example, the number of bending portions 41 can be a plurality, for example, the number of bending portions 41 can be two, three, four, five, and more than six. In a specific example, as shown in Figure 4 The number of bending portions 41 is three, and in the front-rear direction, the three bending portions 41 are sequentially a first bending portion 41a, a second bending portion 41b, and a third bending portion 41c.

[0048] When the vehicle accelerates or brakes, the friction plate back plate 20 has a tendency to move backward or forward relative to the caliper body 10. At this time, the elastic sheets between the two ends of the friction plate back plate 20 and the caliper body 10 can absorb the kinetic energy of the friction plate back plate 20 through their own elastic deformation, and the bending portion 41 on the elastic sheet can effectively enhance the elastic recovery ability of the elastic sheet, so that the elastic sheet can recover to its original state more quickly after being deformed under pressure, thereby providing the friction plate back plate 20 with a continuous and stable buffering effect.

[0049] The elastic sheet extends in the front-rear direction, and the elastic sheet is formed with a bending portion 41 bent to one side in the thickness direction of the elastic sheet. The number of bending portions 41 is one or a plurality arranged in the front-rear direction. This can effectively enhance the ability of the elastic sheet to recover to its original state after elastic deformation under force, thereby effectively improving the buffering capacity and damping effect of the elastic sheet on the friction plate back plate 20.

[0050] In an embodiment of the present application, as shown in Figure 4As shown, the number of the bending portions 41 is multiple, and the stiffness of at least two bending portions 41 is different. For example, the number of the bending portions 41 can be two, three, four, five, and more than six. For example, the stiffness of two bending portions 41 in the multiple bending portions 41 is different; for another example, the stiffness of three bending portions 41 in the multiple bending portions 41 is different; for still another example, the stiffness of four bending portions 41 in the multiple bending portions 41 is different.

[0051] In one specific example, as shown in Figure 4 As shown, the number of the bending portions 41 is three, and in the front-to-back direction, the three bending portions 41 are sequentially a first bending portion 41a, a second bending portion 41b, and a third bending portion 41c, the stiffness of the first bending portion 41a, the second bending portion 41b, and the third bending portion 41c is all different, and further, the stiffness of the first bending portion 41a is less than that of the second bending portion 41b, and the stiffness of the second bending portion 41b is less than that of the third bending portion 41c, that is, in the front-to-back direction, the stiffness of the bending portions 41 gradually increases.

[0052] When the elastic sheet is deformed under force, due to the different stiffness of the multiple bending portions 41, the deformation amount of different bending portions 41 is different. The bending portion 41 with lower stiffness can respond more quickly and more sensitively to small amplitude vibration, thereby helping to reduce high frequency noise and slight vibration, and improving the driving experience. The bending portion 41 with higher stiffness can maintain sufficient support force when encountering larger impact, prevent the elastic sheet from excessive deformation, and ensure stability and safety.

[0053] By setting the number of the bending portions 41 to multiple and the stiffness of at least two bending portions 41 to be different, the elastic sheet has a progressive buffering effect, so that the elastic sheet can adapt to multiple different working conditions, thereby effectively improving the applicability of the elastic sheet.

[0054] In one embodiment of the utility model, as shown in Figure 4 As shown, in the front-to-back direction, the bending portion 41 extends along the circular arc line protruding on one side in the thickness direction of the elastic sheet. That is, the bending portion 41 is not simply straightly bent, but has a certain curvature, forming a smooth transition.

[0055] For example, the bending portion 41 can extend upward along the circular arc line protruding on one side in the thickness direction of the elastic sheet; for another example, the bending portion 41 can extend downward along the circular arc line protruding on one side in the thickness direction of the elastic sheet. That is, as shown in Figure 4 The bending portion 41 can be bent upward or downward, and the bending portion adopts circular arc transition. In one specific example, as shown in Figure 4 The first bending portion 41a is bent downward, the second bending portion 41b is bent upward, and the third bending portion 41c is bent downward, and the bending portion adopts circular arc transition.

[0056] The bending part 41 is extended along the circular arc line protruding to one side in the thickness direction of the elastic sheet in the front-back direction, so that the bending part 41 has a smooth transition, thereby avoiding stress concentration of the bending part 41, reducing the risk of material fatigue and fracture of the bending part 41, and effectively improving the durability of the elastic sheet.

[0057] In one embodiment of the present application, as shown in Figure 3 and 4 In the direction from the first wall surface 1011 to the friction plate back plate 20, the radii of the plurality of bending parts 41 gradually increase. In one specific example, as shown in Figure 4 the radius of the first bending part 41a is smaller than that of the second bending part 41b, and the radius of the second bending part 41b is smaller than that of the third bending part 41c, that is, in the front-back direction, the radii of the bending parts 41 gradually increase.

[0058] It should be noted that the greater the radius of the bending part 41, the greater the stiffness of the bending part 41, so in the front-back direction, the stiffness of the bending part 41 gradually increases, thereby making the elastic sheet have a multi-stage buffer structure. When the elastic sheet is subjected to external force, the bending part 41 with a smaller radius can first deform to absorb the initial impact. As the external force acting on the elastic sheet increases, the bending part 41 with a larger radius also begins to work to provide additional support. Thus, the multi-stage buffer structure can make the elastic sheet handle different external forces and different working conditions more smoothly, thereby effectively achieving a progressive buffering and damping effect.

[0059] In the embodiment, in the direction from the first wall surface 1011 to the friction plate back plate 20, the radii of the plurality of bending parts 41 are set to gradually increase, so that the stiffness of the plurality of bending parts 41 gradually increases in the direction from the first wall surface 1011 to the friction plate back plate 20, thereby making the elastic sheet have a multi-stage buffer structure, and effectively ensuring the reliability of the elastic sheet. In addition, the structure of the elastic sheet can be effectively simplified, and the processing difficulty is reduced, thereby effectively reducing the cost.

[0060] In one embodiment of the present application, as shown in Figure 4 the elastic sheet includes a plurality of extension sections 42 arranged in the front-back direction, two adjacent extension sections 42 are connected by a bending part 41, and the two extension sections 42 connected on both sides of the bending part 41 are arranged at an angle.

[0061] For example, the number of extension sections 42 can be two, three, four, five, and more than six, and in one specific example, as shown in Figure 4As shown, the number of the extension segments 42 is four, and in the front-to-back direction, the four extension segments 42 are respectively a first extension segment 42a, a second extension segment 42b, a third extension segment 42c, and a fourth extension segment 42d.

[0062] When the elastic sheet is subjected to external force, the extension segments 42, as the main load-bearing parts of the elastic sheet, can effectively transmit and disperse the external force acting on the elastic sheet, and the two extension segments 42 connected to the two sides of the bending part 41 are arranged at an angle, so that the external force acting on the elastic sheet can be more effectively dispersed in different directions, avoiding excessive stress on the elastic sheet in a single direction.

[0063] The embodiment can effectively improve the load-bearing capacity and stability of the elastic sheet, thereby effectively improving the reliability of the caliper body assembly 100.

[0064] In one embodiment of the utility model, as shown in Figures 2-4 A mounting hole 401 is formed on the elastic sheet, and the elastic sheet is riveted and connected with the back plate 20 of the friction plate through the mounting hole 401; and / or a recessed mounting groove 201 is formed on the surface of the back plate 20 of the friction plate away from the friction plate 30 in the left-right direction, the mounting groove 201 penetrates the end edge of the back plate 20 of the friction plate towards the first wall surface 1011, and one end of the elastic sheet is fixed in the mounting groove 201.

[0065] For example, a mounting hole 401 is formed on the elastic sheet, and the elastic sheet is riveted and connected with the back plate 20 of the friction plate through the mounting hole 401; for another example, a recessed mounting groove 201 is formed on the surface of the back plate 20 of the friction plate away from the friction plate 30 in the left-right direction, the mounting groove 201 penetrates the end edge of the back plate 20 of the friction plate towards the first wall surface 1011, and one end of the elastic sheet is fixed in the mounting groove 201; for another example, a mounting hole 401 is formed on the elastic sheet, and the elastic sheet is riveted and connected with the back plate 20 of the friction plate through the mounting hole 401, and a recessed mounting groove 201 is formed on the surface of the back plate 20 of the friction plate away from the friction plate 30 in the left-right direction, the mounting groove 201 penetrates the end edge of the back plate 20 of the friction plate towards the first wall surface 1011, and one end of the elastic sheet is fixed in the mounting groove 201.

[0066] In one specific example, as shown in Figure 4 A mounting hole 401 is formed on the elastic sheet, and the elastic sheet is riveted and connected with the back plate 20 of the friction plate through the mounting hole 401. Further, as shown in Figure 2As shown, the right side surface of the friction plate back plate 20 is formed with a recessed mounting groove 201, the mounting groove 201 penetrates the end edge of the friction plate back plate 20 towards the first wall surface 1011, and one end of the elastic sheet provided with the mounting hole 401 is fixed in the mounting groove 201 by a rivet.

[0067] The mounting hole 401 is formed on the elastic sheet, the elastic sheet is riveted and connected with the friction plate back plate 20 through the mounting hole 401, and / or the left and right side surfaces of the friction plate back plate 20 away from the friction plate 30 are formed with recessed mounting grooves 201, the mounting grooves 201 penetrate the end edges of the friction plate back plate 20 towards the first wall surface 1011, and one end of the elastic sheet is fixed in the mounting groove 201, so that the structural strength of the connection between the elastic sheet and the friction plate back plate 20 can be effectively improved, and the stability and reliability of the connection between the elastic sheet and the friction plate back plate 20 can be effectively improved.

[0068] In one embodiment of the utility model, Figure 1 As shown, the brake caliper body assembly 100 further comprises: a pin shaft 50 fixed on the caliper body 10, the pin shaft 50 is arranged in the mounting cavity 101 and extends in the left and right directions, the number of pin shafts 50 is multiple, the multiple pin shafts 50 are arranged in front and back intervals, the friction plate back plate 20 is formed with guide holes penetrating the friction plate back plate 20 in the left and right directions, the guide holes are long strip-shaped holes extending in front and back directions, the number of guide holes is multiple and corresponds to the multiple pin shafts 50 one by one, and the friction plate back plate 20 is sleeved on the pin shaft 50 through the guide hole and is movable in the front and back directions relative to the pin shaft 50.

[0069] For example, the number of pin shafts 50 can be two, three, four, five or more than six. In a specific example, Figure 1 As shown, the number of pin shafts 50 is two, and the two pin shafts 50 are arranged in front and back intervals. Further, Figure 2 And Figure 3 As shown, the friction plate back plate 20 is formed with guide holes penetrating the friction plate back plate 20 in the thickness direction of the friction plate back plate 20, the guide holes are long circular holes, the number of guide holes is two, and the guide holes correspond to the pin shafts 50 one by one.

[0070] The embodiment is characterized in that the pin shaft 50 is arranged in the brake caliper body assembly 100, the pin shaft 50 is fixed to the caliper body 10, the pin shaft 50 is arranged in the mounting cavity 101 and extends in the left-right direction, the number of the pin shaft 50 is multiple, the multiple pin shafts 50 are arranged in front of and behind each other, the guide hole is formed on the friction plate back plate 20 and penetrates the friction plate back plate 20 in the left-right direction, the guide hole is a long strip-shaped hole extending in the front-rear direction, the number of the guide hole is multiple and corresponds to the multiple pin shafts 50 one by one, the friction plate back plate 20 is sleeved on the pin shaft 50 through the guide hole and is movable in the front-rear direction relative to the pin shaft 50, and the friction plate back plate 20 can be prevented from moving or shaking in other directions, so that the stability and reliability of the friction plate back plate 20 are further improved.

[0071] In one embodiment of the utility model, the number of the friction plate back plate 20 is two, the two friction plate back plates 20 are symmetrically arranged in the left-right direction, the number of the friction plate 30 is two, and the two friction plates 30 are arranged on the opposite side surfaces of the two friction plate back plates 20 respectively.

[0072] In one specific example, when the user steps on the brake pedal, the hydraulic system can drive the pistons on the left and right sides to move towards each other, so as to push the friction plate back plates 20 on the left and right sides to move towards each other, and then the friction plates 30 on the left and right sides can contact the brake disc, so as to complete the braking of the vehicle.

[0073] In one embodiment of the utility model, the number of the friction plate back plate 20 is two, the two friction plate back plates 20 are symmetrically arranged in the left-right direction, the number of the friction plate 30 is two, and the two friction plates 30 are arranged on the opposite side surfaces of the two friction plate back plates 20 respectively.

[0074] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0075] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and do not connote or imply any relative importance or order of magnitude. Thus, features with "first", "second", "third" designations can include one or more of the features implicitly or explicitly. In the description of the present application, the meaning of "a plurality" is two or more, unless specifically defined otherwise.

[0076] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0077] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0078] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A brake caliper body assembly, characterized by, The utility model relates to a caliper body, the caliper body defines the installation cavity, the installation cavity has two first wall surfaces opposite arrangement in front-back direction; The utility model relates to a friction plate backplate, the friction plate backplate is equipped in the installation cavity, the front and back two end faces of the friction plate backplate have the clearance between two first wall surfaces; The utility model relates to a friction plate, the friction plate is fixed to the one side surface of the friction plate backplate in left and right direction to the brake disc; The utility model relates to an elastic piece, the front and back two ends of the friction plate backplate are fixed, and the first wall surface is contacted. The utility model discloses a caliper body, the caliper body defines the installation cavity, the installation cavity has two first wall surfaces opposite arrangement in front-back direction; 2. The brake caliper assembly of claim 1, wherein, The utility model relates to a friction plate backplate, the friction plate backplate is equipped in the installation cavity, the front and back two end faces of the friction plate backplate have the clearance between two first wall surfaces; 3. The brake caliper assembly of claim 2, wherein, The utility model relates to a friction plate, the friction plate is fixed to the one side surface of the friction plate backplate in left and right direction to the brake disc; 4. The brake caliper assembly of claim 3, wherein, The utility model relates to an elastic piece, the front and back two ends of the friction plate backplate are fixed, and the first wall surface is contacted.

5. The brake caliper assembly of claim 4, wherein, The utility model discloses a caliper body, the caliper body defines the installation cavity, the installation cavity has two first wall surfaces opposite arrangement in front-back direction; 6. The brake caliper assembly of claim 5, wherein, The utility model relates to a friction plate backplate, the friction plate backplate is equipped in the installation cavity, the front and back two end faces of the friction plate backplate have the clearance between two first wall surfaces; 7. The brake caliper assembly of claim 3, wherein, The utility model relates to a friction plate, the friction plate is fixed to the one side surface of the friction plate backplate in left and right direction to the brake disc; 8. The brake caliper body assembly of any one of claims 2-7, wherein, The utility model relates to an elastic piece, the front and back two ends of the friction plate backplate are fixed, and the first wall surface is contacted. The utility model discloses a caliper body, the caliper body defines the installation cavity, the installation cavity has two first wall surfaces opposite arrangement in front-back direction; 9. The brake caliper assembly of any one of claims 2-7, wherein, The utility model relates to a friction plate backplate, the friction plate backplate is equipped in the installation cavity, the front and back two end faces of the friction plate backplate have the clearance between two first wall surfaces; The utility model relates to a friction plate, the friction plate is fixed to the one side surface of the friction plate backplate in left and right direction to the brake disc; The utility model relates to an elastic piece, the front and back two ends of the friction plate backplate are fixed, and the first wall surface is contacted.

10. The brake caliper assembly of claim 1, wherein, The utility model discloses a caliper body, the caliper body defines the installation cavity, the installation cavity has two first wall surfaces opposite arrangement in front-back direction; The utility model relates to a friction plate backplate, the friction plate backplate is equipped in the installation cavity, the front and back two end faces of the friction plate backplate have the clearance between two first wall surfaces; The utility model relates to a friction plate, the friction plate is fixed to the one side surface of the friction plate backplate in left and right direction to the brake disc; The utility model relates to an elastic piece, the front and back two ends of the friction plate backplate are fixed, and the first wall surface is contacted. The utility model discloses a caliper body, the caliper body defines the installation cavity, the installation cavity has two first wall surfaces opposite arrangement in front-back direction; The utility model relates to a friction plate backplate, the friction plate backplate is equipped in the installation cavity, the front and back two end faces of the friction plate backplate have the clearance between two first wall surfaces; The utility model relates to a friction plate, the friction plate is fixed to the one side surface of the friction plate backplate in left and right direction to the brake disc; The utility model relates to an elastic piece, the front and back two ends of the friction plate backplate are fixed, and the first wall surface is contacted.

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