Friction plate assembly, brake caliper assembly and vehicle

Abstract

The utility model discloses a friction plate assembly, a brake caliper assembly and a vehicle, the friction plate assembly comprises a friction plate main body and two return elastic pieces, and the two return elastic pieces are symmetrically arranged on the left side and the right side of the friction plate main body; the two return elastic pieces each comprise a mounting part and two deformation supporting structures connected with the mounting part, the mounting parts are connected with the friction plate body, and the two deformation supporting structures are symmetrically arranged on the upper side and the lower side of the mounting parts. The brake caliper assembly comprises a brake caliper support, a piston, a sealing rubber ring, a brake caliper body and two friction plate assemblies. The vehicle comprises the friction plate assembly or the brake caliper assembly. According to the brake caliper assembly, dragging friction between the friction plate assembly and the brake disc can be prevented, and the purpose of reducing dragging torque of the brake caliper assembly is achieved.

Description

Technical Field

[0001] This utility model relates to a vehicle braking system, specifically to a friction pad assembly, a brake caliper assembly, and a vehicle. Background Technology

[0002] With the rapid development of new energy vehicles, the demand for energy conservation and environmental protection is becoming increasingly urgent. This has spurred the rapid development of brake caliper assemblies with low drag torque solutions for braking systems, while also posing new requirements for their development. In current applications, the friction pad assemblies on brake caliper assemblies typically lack the ability to actively disengage from the brake disc. A small number of caliper assemblies are designed with a spring return mechanism to force the friction pad assembly to disengage from the brake disc, or a return spring is riveted to the friction pad assembly. While these designs allow the friction pad assembly to disengage from the brake disc, the unbalanced force on the assembly leads to yaw during the return process, causing the outer or inner edge of the friction surface of the friction pad assembly to drag against the brake disc. This dragging phenomenon is particularly severe after the vehicle has been driven for a period of time, resulting in increased drag torque in the braking system and increased fuel consumption. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a friction pad assembly, a brake caliper assembly, and a vehicle that can prevent drag friction between the friction pad assembly and the brake disc, thereby reducing the drag torque of the brake caliper assembly.

[0004] A friction pad assembly according to the present invention includes a friction pad body and two return elastic members, the two return elastic members being symmetrically arranged on the left and right sides of the friction pad body; each of the two return elastic members includes a mounting part and two deformable support structures connected to the mounting part, the mounting part being connected to the friction pad body, and the two deformable support structures being symmetrically arranged on the upper and lower sides of the mounting part.

[0005] Furthermore, the friction pad body includes a back plate and a friction material disposed on the front side of the back plate; a support ear is provided on each of the left and right sides of the back plate, and the support ear is connected to the mounting part.

[0006] Furthermore, mounting grooves are provided on both the upper and lower sides of the support ear, and the mounting grooves are continuous in the front-to-back direction; a limiting surface and two clearance slopes are provided on the front side of the support ear, and the two clearance slopes are respectively provided on the upper and lower sides of the limiting surface.

[0007] Furthermore, each of the aforementioned return elastic members has two deformable portions and two support hooks; the mounting portion includes a limiting section and two connecting sections, the upper and lower ends of the limiting section are respectively connected to the first ends of the two connecting sections, the limiting section abuts against the limiting surface, the two connecting sections pass through the two mounting grooves respectively, and the tail ends of the two connecting sections extend rearward, the deformable support structure is connected to the tail ends of the connecting sections and is suspended behind the back plate.

[0008] Furthermore, both of the aforementioned deformable support structures include a deformable portion and a support hook. The first end of the deformable portion is connected to the tail end of the connecting section, and the tail end of the deformable portion is connected to the support hook. The middle portion of the deformable portion and the middle portion of the support hook are both C-shaped. The opening direction of the middle portion of the deformable portion is forward, and the opening direction of the middle portion of the support hook is backward.

[0009] Furthermore, the angle α between the upper or lower end face of the support lug and the axis of the deformable part is 0-45°.

[0010] Furthermore, the material of the return elastic element is steel wire.

[0011] This utility model discloses a brake caliper assembly, including a brake caliper bracket, a piston, a sealing rubber ring, and a brake caliper body. A guide pin is provided on the brake caliper body, and the brake caliper bracket is slidably engaged with the guide pin. The piston is connected to the brake caliper body via the sealing rubber ring. The brake caliper assembly also includes two friction pad assemblies. Two symmetrical spring plates are provided on the inner side of the brake caliper bracket. The two friction pad assemblies are arranged with their friction materials facing each other on the inner side of the brake caliper bracket, and there is a gap between the two friction pad assemblies. Two lugs of each friction pad assembly are respectively connected to the two spring plates. The back plate of one friction pad assembly contacts the brake caliper body, and each support hook of this friction pad assembly abuts against the end face of the brake caliper bracket facing the brake caliper body. Each support hook of the other friction pad assembly abuts against the end face of the brake caliper bracket facing away from the brake caliper body.

[0012] Furthermore, both the guide pin and the piston are provided in pairs.

[0013] One type of vehicle in this invention includes the aforementioned friction pad assembly or the aforementioned brake caliper assembly.

[0014] The beneficial effects of this utility model are as follows: The return elastic element of the friction pad assembly of this utility model is used to make the friction pad body return to its original position in time when braking ends. Furthermore, the two return elastic elements are symmetrically arranged on both sides of the friction pad body, which can balance the force on the left and right sides of the friction pad body. The two deformation support structures are symmetrically arranged on the upper and lower sides of the mounting part, which can also balance the force on the upper and lower sides of the friction pad body. Thus, they together ensure that the friction pad assembly as a whole will not wobble after the return process, and the return is more stable, preventing the friction pad body from dragging with the brake disc. This achieves the purpose of reducing the drag torque of the brake caliper assembly, thereby overcoming the drag force problem caused by the friction between the brake disc and the friction pad assembly when braking ends in the prior art, and eliminating the problem of high fuel consumption caused by drag force. Attached Figure Description

[0015] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0016] Figure 1 This is a schematic diagram of the friction plate assembly of this utility model;

[0017] Figure 2 This is a rear view schematic diagram of the friction pad assembly of this utility model;

[0018] Figure 3 This is a top view schematic diagram of the friction pad assembly of this utility model;

[0019] Figure 4 This is a side view of the friction pad assembly of this utility model;

[0020] Figure 5 This is a partially enlarged structural diagram of the periphery of the support lug of this utility model;

[0021] Figure 6 This is a schematic diagram of the return elastic element of this utility model;

[0022] Figure 7 This is a schematic diagram of the brake caliper assembly of this utility model;

[0023] Figure 8 This is an exploded view of the brake caliper assembly of this utility model.

[0024] The following labels are shown in the attached diagram:

[0025] 1-Friction pad body, 101-Back plate, 1011-Support lug, 1012-Mounting groove, 1013-Limiting surface, 1014-Leaving slope, 102-Friction material;

[0026] 2-Returning elastic element, 201-Installation part, 2011-Limiting section, 2012-Connecting section, 202-Deformable support structure, 2021-Deformable part, 2022-Support hook;

[0027] 3-Brake caliper bracket, 301-Spring plate, 4-Piston, 5-Sealing rubber ring, 6-Brake caliper body, 601-Guide pin. Detailed Implementation

[0028] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0029] like Figures 1-6 As shown, a friction pad assembly in this embodiment includes a friction pad body 1 and two return elastic members 2. The two return elastic members 2 are symmetrically arranged on the left and right sides of the friction pad body 1. Each of the two return elastic members 2 includes a mounting part 201 and two deformable support structures 202 connected to the mounting part 201. The mounting part 201 is connected to the friction pad body 1, and the two deformable support structures 202 are symmetrically arranged on the upper and lower sides of the mounting part 201.

[0030] During use, the friction pad assembly is installed in the brake caliper bracket 3 of the brake caliper assembly. The return elastic element 2 is used to promptly return the friction pad body 1 to its original position when braking ends. Furthermore, the two return elastic elements 2 are symmetrically arranged on both sides of the friction pad body 1, which can balance the forces on the left and right sides of the friction pad body 1. The two deformable support structures 202 are symmetrically arranged on the upper and lower sides of the mounting part 201, which can also balance the forces on the upper and lower sides of the friction pad body 1. Thus, they together ensure that the friction pad assembly will not wobble after the return process, and the return is more stable, preventing the friction pad body 1 from dragging with the brake disc. This achieves the purpose of reducing the drag torque of the brake caliper assembly, thereby overcoming the drag force problem caused by the friction between the brake disc and the friction pad assembly when braking ends in the prior art, and eliminating the problem of high fuel consumption caused by drag force.

[0031] In this embodiment, the friction pad body 1 includes a back plate 101 and a friction material 102 disposed on the front side of the back plate 101; a support ear 1011 is disposed on the left and right sides of the back plate 101, and the support ear 1011 is connected to the mounting part 201.

[0032] Friction material 102 is used to contact the brake disc to achieve braking, and lug 1011 is used to connect with return elastic member 2.

[0033] In this embodiment, mounting grooves 1012 are provided on both the upper and lower sides of the support ear 1011, and the mounting grooves 1012 are through in the front and back direction; a limiting surface 1013 and two clearance slopes 1014 are provided on the front side of the support ear 1011, and the two clearance slopes 1014 are respectively provided on the upper and lower sides of the limiting surface 1013.

[0034] In this embodiment, the mounting part 201 includes a limiting section 2011 and two connecting sections 2012. The upper and lower ends of the limiting section 2011 are respectively connected to the first ends of the two connecting sections 2012. The limiting section 2011 abuts against the limiting surface 1013. The two connecting sections 2012 pass through the two mounting grooves 1012 respectively, and the tail ends of the two connecting sections 2012 extend rearward so that the deformable support structure 202 is suspended behind the back plate 101.

[0035] The connecting section 2012 of the mounting part 201 engages with the mounting groove 1012. The two clearance slopes 1014 are symmetrical to each other. The clearance slopes 1014 are used to prevent interference between the corner of the limiting section 2011 and the connecting section 2012 of the mounting part 201 and the corner of the lug 1011, so that the limiting section 2011 of the mounting part 201 can abut against the limiting surface 1013, so that the limiting surface 1013 can provide a stable force-bearing support contact surface for the limiting section 2011.

[0036] The deformable support structure 202 is suspended behind the back plate 101. The friction pad assembly is installed in the brake caliper bracket 3 of the brake caliper assembly. The support hook 2022 of the deformable support structure 202 can extend from the inside of the brake caliper bracket 3 to the outside and abut against the end face of the brake caliper bracket 3 to form a support point. When braking, the friction pad body 1 moves in the brake caliper bracket 3, while the position of the support hook 2022 of the deformable support structure 202 remains unchanged, thus causing the deformable part 2021 to deform. After braking, the deformable part 2021 restores its shape and drives the mounting part 201 and the friction pad body 1 back to their original positions.

[0037] In this embodiment, both deformable support structures 202 include a deformable portion 2021 and a support hook 2022. The first end of the deformable portion 2021 is connected to the tail end of the connecting segment 2012, and the tail end of the deformable portion 2021 is connected to the support hook 2022. The middle part of the deformable portion 2021 and the middle part of the support hook 2022 are both C-shaped. Furthermore, the opening direction of the middle part of the deformable portion 2021 is forward, and the opening direction of the middle part of the support hook is backward.

[0038] The forward-facing opening of the middle section of the deformable part 2021 ensures its elasticity for deformation and shape recovery. It also alters the extension direction of the tail end of the deformable part 2021, bringing the support hook 2022, which connects to the tail end of the deformable part 2021, closer to the back plate 101 relative to the middle section of the deformable part 2021. This ensures that the support hook 2022 can rest against the end face of the brake caliper bracket 3. The rearward-facing opening of the middle section of the support hook 2022 results in an arc-shaped structure at the point of contact with the end face of the brake caliper bracket 3. This prevents scratching the end face of the brake bracket and facilitates smooth sliding during return to its original position.

[0039] In this embodiment, the angle α between the upper or lower end face of the lug 1011 and the axis of the deformable portion 2021 is 0-45°. Preferably, the angle α is 10°-30°, more preferably 15°-20°, for example, the angle α can be 15°, 17°, etc. The upper and lower end faces of the lug 1011 are arc-parallel. The angle between the axis of the deformable portion 2021 near the upper end face of the lug 1011 and the upper end face of the lug 1011 is α, and the angle between the axis of the deformable portion 2021 near the lower end face of the lug 1011 and the lower end face of the lug 1011 is α. When α is 0-45° (especially 10°-30°), the return-to-position effect is better.

[0040] In this embodiment, the return elastic element 2 is made of steel wire. The return elastic element 2 made of steel wire is lightweight, easy to process, and low in cost.

[0041] One type of brake caliper assembly in this embodiment, such as Figure 7 and Figure 8 As shown, the assembly includes a brake caliper bracket 3, a piston 4, a sealing rubber ring 5, and a brake caliper body 6. A guide pin 601 is provided on the brake caliper body 6, and the brake caliper bracket 3 is slidably engaged with the guide pin 601. The piston 4 is connected to the brake caliper body 6 via the sealing rubber ring 5. The brake caliper assembly also includes two friction pad assemblies. Two symmetrical spring plates 301 are provided on the inner side of the brake caliper bracket 3. The two friction pad assemblies are arranged with friction materials 102 facing each other on the inner side of the brake caliper bracket 3, with a gap between them. Two lugs 1011 of each friction pad assembly are respectively connected to the two spring plates 301. The back plate 101 of one friction pad assembly contacts the brake caliper body 6, and each support hook 2022 of this friction pad assembly abuts against the side end face of the brake caliper bracket 3 facing the brake caliper body 6. Each support hook 2022 of the other friction pad assembly abuts against the side end face of the brake caliper bracket 3 facing away from the brake caliper body 6.

[0042] During use, when not braking, the brake caliper assembly matches the brake disc, and there is a gap between the two friction pad assemblies and the brake disc. The brake caliper body 6 and the brake caliper bracket 3 are connected by a guide pin 601. One end of the guide pin 601 is fixed on the brake caliper body 6, and the other end of the guide pin 601 is installed in the pin mounting hole of the brake caliper bracket 3. The piston 4 is arranged in the inner hole of the brake caliper body 6, and a rubber sealing ring is provided between the brake caliper body 6 and the piston 4. The back plate 101 of one of the friction pad assemblies is in contact with the brake caliper body 6.

[0043] During braking, the piston 4 moves forward axially along the inner hole of the brake caliper 6 to provide braking force. The piston 4 drives the friction pad assembly near the brake caliper 6 to gradually approach the brake disc. After the friction pad assembly abuts against the brake disc, the piston 4 drives the brake caliper 6 to move away from the brake disc. At this time, the brake caliper 6 drives the brake bracket to move, causing the friction pad assembly away from the brake caliper 6 to gradually approach the brake disc as well. This ensures that the friction materials 102 of both friction pad assemblies press against the brake disc, achieving braking. After the braking force is released, the rubber sealing ring drags the piston 4 back, creating a gap between the piston 4 and the friction pad assembly. Each return elastic element 2 drives each friction pad body 1 to return to its original position, and both friction pad assemblies have a gap with the brake disc, thus releasing the brake.

[0044] The return elastic element 2 of the friction pad assembly of the brake caliper assembly is used to promptly return the friction pad body 1 to its original position when braking ends. Furthermore, the two return elastic elements 2 are symmetrically arranged on both sides of the friction pad body 1, which can balance the forces on the left and right sides of the friction pad body 1. The two deformable support structures 202 are symmetrically arranged on the upper and lower sides of the mounting part 201, which can also balance the forces on the upper and lower sides of the friction pad body 1. Thus, they together ensure that the friction pad assembly as a whole will not wobble after the return process, and the return is more stable, preventing drag friction between the friction pad body 1 and the brake disc, thereby reducing the drag torque of the brake caliper assembly. This overcomes the drag force problem caused by the friction between the brake disc and the friction pad assembly when braking ends in the prior art, and eliminates the problem of high fuel consumption caused by drag force.

[0045] In this embodiment, two guide pins 601 and two pistons 4 are provided. Pin mounting holes matching the two guide pins 601 are also provided on both sides of the brake caliper bracket 3. The two guide pins 601 ensure accurate relative movement direction between the brake caliper bracket 3 and the brake caliper body 6. The two pistons 4 ensure relatively uniform distribution of braking force during braking.

[0046] One vehicle in this embodiment includes the above-described friction pad assembly or the above-described brake caliper assembly.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A friction plate assembly, characterized by: The application relates to a friction plate body (1) and two return elastic members (2), the two return elastic members (2) are symmetrically arranged on the left and right sides of the friction plate body (1), each of the two return elastic members (2) comprises a mounting part (201) and two deformation support structures (202) connected with the mounting part (201), the mounting part (201) is connected with the friction plate body (1), and the two deformation support structures (202) are symmetrically arranged on the upper and lower sides of the mounting part (201).

2. The friction plate assembly of claim 1, wherein: The friction plate body (1) comprises a back plate (101) and a friction material (102) arranged on the front side of the back plate (101), and one lug (1011) is arranged on the left and right sides of the back plate (101) respectively, and the lug (1011) is connected with the mounting part (201).

3. The friction plate assembly of claim 2, wherein: The upper and lower sides of the lug (1011) are provided with mounting grooves (1012) penetrating in the front-rear direction, and the front side of the lug (1011) is provided with a limiting surface (1013) and two giving-in inclined surfaces (1014), and the two giving-in inclined surfaces (1014) are arranged on the upper and lower sides of the limiting surface (1013) respectively.

4. The friction plate assembly of claim 3, wherein: The mounting part (201) comprises a limiting section (2011) and two connecting sections (2012), the upper and lower ends of the limiting section (2011) are connected with the leading ends of the two connecting sections (2012) respectively, the limiting section (2011) abuts against the limiting surface (1013), the two connecting sections (2012) pass through the two mounting grooves (1012) respectively, and the trailing ends of the two connecting sections (2012) extend backward, the deformation support structure (202) is connected with the trailing ends of the connecting sections (2012) and is arranged in the air behind the back plate (101).

5. The friction plate assembly of claim 4, wherein: The two deformation support structures (202) each comprise a deformation part (2021) and a supporting hook (2022), the leading end of the deformation part (2021) is connected with the trailing end of the connecting section (2012), the trailing end of the deformation part (2021) is connected with the supporting hook (2022), the middle part of the deformation part (2021) and the middle part of the supporting hook (2022) are C-shaped, the opening direction of the middle part of the deformation part (2021) is forward, and the opening direction of the middle part of the supporting hook is backward.

6. The friction plate assembly of claim 5, wherein: The included angle alpha between the upper end face or the lower end face of the lug (1011) and the axis of the deformation part (2021) is 0-45 degrees.

7. The plate pack assembly of any one of claims 1-6, wherein: The material of the return elastic member (2) is steel wire.

8. A brake caliper assembly comprising a brake caliper bracket (3), a piston (4), a sealing rubber ring (5) and a brake caliper body (6), wherein a guide pin (601) is arranged on the brake caliper body (6), the brake caliper bracket (3) is in sliding fit with the guide pin (601), and the piston (4) is connected with the brake caliper body (6) through the sealing rubber ring (5), characterized in that: The application further discloses a brake caliper assembly comprising two friction plate assemblies as claimed in any one of claims 2-6, wherein the inner side of the brake caliper bracket (3) is provided with two mutually symmetrical spring plates (301), the two friction plate assemblies are arranged on the inner side of the brake caliper bracket (3) in a manner that the friction materials (102) face each other, the two friction plate assemblies have a spacing therebetween, the two lugs (1011) of each friction plate assembly are connected with the two spring plates (301) respectively, the back plate (101) of one of the friction plate assemblies is in contact with the brake caliper body (6), and each support hook (2022) of the friction plate assembly is abutted against the side end face of the brake caliper bracket (3) facing the brake caliper body (6), and each support hook (2022) of the other friction plate assembly is abutted against the side end face of the brake caliper bracket (3) facing away from the brake caliper body (6).

9. The brake caliper assembly of claim 8, wherein: The guide pin (601) and the piston (4) are both provided with two.

10. A vehicle characterized by: The application further discloses a brake caliper assembly comprising two friction plate assemblies as claimed in any one of claims 2-6, wherein the inner side of the brake caliper bracket (3) is provided with two mutually symmetrical spring plates (301), the two friction plate assemblies are arranged on the inner side of the brake caliper bracket (3) in a manner that the friction materials (102) face each other, the two friction plate assemblies have a spacing therebetween, the two lugs (1011) of each friction plate assembly are connected with the two spring plates (301) respectively, the back plate (101) of one of the friction plate assemblies is in contact with the brake caliper body (6), and each support hook (2022) of the friction plate assembly is abutted against the side end face of the brake caliper bracket (3) facing the brake caliper body (6), and each support hook (2022) of the other friction plate assembly is abutted against the side end face of the brake caliper bracket (3) facing away from the brake caliper body (6).

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