A stationary brake caliper assembly, method of assembly and vehicle

Abstract

The application discloses a fixed brake caliper assembly, an assembling method and a vehicle, and relates to the field of automobile parts, and the fixed brake caliper assembly comprises a brake caliper, a brake block, an auxiliary elastic member and a sound-absorbing sheet, the brake caliper comprises a positioning pin and a main compression spring, the auxiliary elastic member is clamped between the positioning pin and the brake block, the auxiliary elastic member and the main compression spring form a double-side auxiliary return structure, the sound-absorbing sheet is provided with lateral limiting structures at two ends in the long end direction of the brake block, and the two lateral limiting structures are elastically attached to two guide surfaces of the brake caliper. The application can solve the industry common problem that it is difficult to control the drag torque of the brake block and the brake disc in the prior art and the Rattle noise problem caused by the clearance collision of the brake system, significantly improves the brake NVH performance, and solves the problems of the complicated return and sound-absorbing structure, poor universality and high modification cost in the prior art.

Description

Technical Field

[0001] This invention belongs to the field of automotive parts technology, and specifically relates to a fixed brake caliper assembly, assembly method, and vehicle. Background Technology

[0002] Currently, automotive disc brake systems widely adopt a fixed brake caliper structure. Existing technology uses a fixed brake caliper solution that combines conventional compression spring return with a flat damping plate. This results in the brake pads being able to return and preload force only through a single compression spring, with the flat damping plate only serving a basic vibration damping function. Summary of the Invention

[0003] The purpose of this invention is to provide a fixed brake caliper assembly, an assembly method, and a vehicle to solve one or more technical problems existing in the prior art.

[0004] The technical solution adopted to solve the above-mentioned technical problems is as follows: This invention discloses a fixed brake caliper assembly, including a brake caliper, a brake block, an auxiliary elastic element, and a noise-reducing plate. The brake caliper includes a positioning pin and a main compression spring. The auxiliary elastic element is engaged between the positioning pin and the brake block. The auxiliary elastic element and the main compression spring form a double-sided auxiliary return structure. The noise-reducing plate has lateral limiting structures at both ends along the long end of the brake block. The two lateral limiting structures elastically fit with the two guide surfaces of the brake caliper.

[0005] The present invention has at least the following beneficial effects: the auxiliary elastic element is engaged between the locating pin and the brake block, forming a double-sided auxiliary return structure with the main compression spring. Thus, the main compression spring is responsible for the pre-tensioning and positioning of the brake block, ensuring braking response speed, while the auxiliary elastic element is responsible for light-load auxiliary return, specifically reducing the sliding resistance between the brake block and the locating pin. Therefore, at the moment of brake release, the main compression spring and the auxiliary spring work together to achieve dual-source coordinated return, enabling the brake block to return quickly and stably, completely disengaging from the brake disc, thus achieving a low-drag fixed brake caliper assembly from the structural root.

[0006] The silencing pad and two lateral limiting structures form a double limiting system that combines axial and radial movement, preventing the brake pad from colliding along the axial and radial direction. This prevents the rattling noise generated by the collision between the silencing pad and the brake caliper, and between the silencing pad and the brake disc from the source, thus achieving a low-noise fixed brake caliper assembly.

[0007] As a further improvement to the above technical solution, the auxiliary elastic element has a figure-eight structure, with the open end of the auxiliary elastic element engaging with the brake block and the closed end of the auxiliary elastic element abutting against the positioning pin.

[0008] As a further improvement to the above technical solution, the auxiliary elastic elements are arranged symmetrically.

[0009] As a further improvement to the above technical solution, the auxiliary elastic element provides an auxiliary return force of 8 to 16 Newtons.

[0010] As a further improvement to the above technical solution, the included angle between the lateral limiting structure and the sound-absorbing plate is 90 degrees.

[0011] As a further improvement to the above technical solution, the height of the lateral limiting structure is 2 to 3 millimeters.

[0012] As a further improvement to the above technical solution, the auxiliary elastic element is a steel wire figure-eight spring.

[0013] As a further improvement to the above technical solution, the lateral limiting structure is a flange.

[0014] This invention discloses an assembly method applied to the fixed brake caliper assembly described in any of the above claims, the assembly method comprising the following steps: Pre-installed brake pads and mufflers; Install the locating pin and auxiliary elastic element into the brake block; Install the brake pads into the cavity of the brake caliper; The brake caliper is fitted with a main compression spring and a dust cover.

[0015] The present invention has at least the following beneficial effects: the lateral limiting structure and the auxiliary elastic component are pre-installed on the brake block as independent standard components, without changing the original assembly datum, so that the assembly process is completely consistent with that of conventional brake calipers, and the assembly of the fixed brake caliper assembly is convenient and quick.

[0016] The present invention discloses a vehicle, characterized in that it includes the fixed brake caliper assembly described in any of the preceding claims. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the overall structure of the fixed brake caliper assembly provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the brake block and the muffler provided in the embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the sound-absorbing sheet provided in an embodiment of the present invention; Figure 4 This is a flowchart of the assembly method provided in the embodiments of the present invention.

[0018] The following labels are shown in the attached diagram: 500. Fixed brake caliper assembly; 600. Brake caliper; 610. Locating pin; 620. Main compression spring; 700, Brake block; 800. Auxiliary elastic components; 900. Sound damping sheet; 910. Lateral limiting structure. Detailed Implementation

[0019] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0021] In the description of this invention, the use of terms such as "a number" means one or more, with "more than" meaning two or more. Terms like "greater than," "less than," and "exceeding" are understood to exclude the stated number, while terms like "above," "below," and "within" are understood to include the stated number. The use of terms like "first," "second," and "third" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, the number of indicated technical features, or the sequential relationship between indicated technical features.

[0022] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0023] In the fixed brake caliper structure of related technologies, the brake pads rely on an integrated compression spring to return to their original position and are guided to slide through a locating pin. This is currently the mainstream braking actuator for passenger vehicles.

[0024] However, the relevant technologies have the following core flaws: 1. The brake pad return force is singular and unevenly distributed, resulting in high sliding resistance and difficulty in controlling the drag torque between the brake pad and the brake disc. A single compression spring cannot simultaneously meet the preload and return requirements, leading to insufficient return after brake release. This causes prolonged slight friction between the brake pad and the brake disc, increasing fuel consumption, brake pad wear, and brake disc temperature rise.

[0025] Second, there is an unavoidable assembly gap between the brake pads and the caliper and brake disc. When the vehicle is driving on bumpy roads or when the brake pedal is released / pressed, the brake pads are prone to axial and radial movement and collision, which will produce Rattle impact noise, poor braking NVH performance, and seriously affect the driving quality.

[0026] Furthermore, existing solutions for improving return and noise reduction often require modifications to the clamp body structure, resulting in high mold costs, complex installation procedures, large space requirements, poor platform versatility, and inability to be mass-produced for multiple models in the same series.

[0027] Reference Figures 1 to 4 The following are several embodiments of a fixed brake caliper assembly, assembly method, and vehicle according to the present invention.

[0028] like Figures 1 to 3 As shown, the fixed brake caliper assembly 500 of this embodiment includes a brake caliper 600, a brake block 700, an auxiliary elastic element 800, and a noise-absorbing plate 900.

[0029] It is understandable that the brake caliper 600 includes a locating pin 610 and a main compression spring 620, such as Figure 1 As shown. Specifically, the locating pin 610 is used to guide the sliding of the brake block 700. The main compression spring 620 is an integral structure and is used to return the brake block 700 to its original position.

[0030] Understandably, the auxiliary elastic element 800 is engaged between the locating pin 610 and the brake block 700, such as... Figure 1 As shown, the auxiliary elastic element 800 and the main compression spring 620 form a double-sided auxiliary return structure. Specifically, the double-sided auxiliary return structure forms a graded force matching, wherein the main compression spring 620 is responsible for the pre-tensioning and positioning of the brake block 700 to ensure braking response speed. The auxiliary elastic element 800 is responsible for light-load auxiliary return, specifically reducing the sliding resistance between the brake block 700 and the positioning pin 610.

[0031] With this configuration, when the brake is released, the main compression spring 620 and the auxiliary spring work together to achieve dual-source coordinated return, enabling the brake pad 700 to return quickly and stably, completely disengaging from the brake disc, thus solving the existing drag problem from the root of the structure.

[0032] It is understandable that the muffler 900 has lateral limiting structures 910 at both ends along the long end of the brake block 700, such as... Figure 2 and Figure 3As shown. Thus, the muffler 900 and the two lateral limiting structures 910 form a double limiting mechanism combining axial and radial directions, preventing the brake block 700 from colliding along the axial and radial directions. The lateral limiting structures 910 only serve a limiting function, without increasing the sliding resistance of the brake block 700 or affecting its return performance, achieving limiting without increasing resistance, and preventing rattling noise generated by collisions between the muffler 900 and the brake caliper 600, or between the muffler 900 and the brake disc, from the source.

[0033] Understandably, the two lateral limiting structures 910 form an axial elastic limit, axially limiting the long end of the brake block 700. The silencing plate 900 is connected to the brake block 700 on the side facing the brake block 700, achieving radial limiting of the brake block 700.

[0034] Understandably, the two lateral limiting structures 910 are elastically fitted to the two guide surfaces of the brake caliper 600. With this configuration, the lateral limiting structures 910 can eliminate the assembly gap between the brake block 700 and the brake caliper 600, and absorb road vibration and braking impact through elastic deformation.

[0035] With this configuration, the fixed brake caliper assembly 500 with low drag and low noise is achieved through the auxiliary elastic element 800 and the lateral limiting structure 910.

[0036] Understandably, the lateral limiting structure 910 on the auxiliary elastic element 800 and the muffler 900 are both external attachment designs that do not alter the main structure of the brake caliper 600. There is no need to re-mold the main structure of the brake caliper 600. Furthermore, the auxiliary elastic element 800 and the lateral limiting structure 910 occupy very little space and can be directly adapted to all existing fixed brake caliper 600 models on the same platform, enabling cross-model batch application and making the fixed brake caliper assembly 500 highly versatile.

[0037] It is understandable that the auxiliary elastic element 800 has a figure-eight structure. Specifically, the figure-eight auxiliary elastic element 800 includes an open end and a closed end. The brake block 700 is engaged in the open end of the auxiliary elastic element 800, and the closed end of the auxiliary elastic element 800 abuts against the positioning pin 610, thus completing the assembly of the auxiliary elastic element 800 and enabling the auxiliary elastic element 800 to provide a stable auxiliary return force.

[0038] It is understandable that the auxiliary elastic element 800 is symmetrically arranged, that is, the auxiliary elastic element 800 is a symmetrical figure-eight structure, so that it acts evenly on both sides of the brake block 700, so as to achieve uniform return of the brake block 700 on both sides and avoid uneven wear of the brake block 700.

[0039] Understandably, the auxiliary elastic element 800 provides an auxiliary return force of 8-16N. Thus, by precisely controlling the constant auxiliary return force provided by the auxiliary elastic element 800, it is easy to optimize the drag torque specifically for different vehicle models.

[0040] Furthermore, the auxiliary elastic element 800 preferably provides an auxiliary return force of 10-12N.

[0041] It is understandable that the angle between the lateral limiting structure 910 and the muffler 900 is 90 degrees, that is, the angle between the plane of the lateral limiting structure 910 and the main body surface of the muffler 900 is 90 degrees, making the lateral limiting structure 910 a 90-degree directional bending structure at both ends of the muffler 900 along the long end direction of the brake block 700.

[0042] Understandably, the height of the lateral restraint structure 910 is 2-3 millimeters.

[0043] In some embodiments, the auxiliary elastic element 800 is a sheet spring, a symmetrical U-shaped elastic steel sheet, a torsion spring type locating pin 610 spring, or a composite material elastic element, etc., which can be provided with a symmetrical elastic structure at the locating pin 610 and can provide an auxiliary return force of 8-16N.

[0044] In this embodiment, the auxiliary elastic element 800 is a steel wire figure-eight spring. Steel wire figure-eight springs are simple in structure, readily available, and inexpensive.

[0045] Understandably, the brake caliper 600 includes two locating pins 610, and two wire V-springs are also provided, each wire V-spring abutting against a corresponding locating pin 610, such as... Figure 1 As shown.

[0046] In some embodiments, the lateral limiting structure 910 may be a boss integrally formed with the silencing plate 900, or an elastic damping block, double-layer composite flange, lateral elastic buckle, etc., provided on the silencing plate 900. The lateral limiting structure 910 may be a structure that can be provided on the silencing plate 900 at the long end of the brake block 700, for axial or radial limiting and Rattle noise suppression.

[0047] In this embodiment, the lateral limiting structure 910 is a flange, such as... Figure 2 and Figure 3 As shown.

[0048] Understandably, the auxiliary elastic element 800 and the lateral limiting structure 910 are designed in a fully modular manner, making the wire figure-eight spring and the snorkeling plate with flange 900 independent standard parts, thus optimizing the structure of the fixed brake caliper assembly 500.

[0049] Furthermore, the fixed brake caliper assembly 500 features a modular pre-assembled structure, which is simple in structure and securely fixed.

[0050] During testing, the fixed brake caliper assembly 500 used a conventional fixed cast steel brake caliper body 600, adapted to a multi-piston structure, and the brake pad 700 was a standard one-piece friction pad. Each of the two locating pins 610 was fitted with a φ1.2mm steel wire figure-eight spring, with the auxiliary return force set to a constant 10N (adjustable within the range of 8~16N depending on the vehicle model). The sound-dampening plates 900 on both sides of the long end of the brake pad 700 were made of stainless steel, and each of the two lateral limiting structures 910 had a 90° flange with a flange height of 2.5mm, elastically engaging with the caliper body guide groove.

[0051] The test was conducted under the conditions of the aforementioned fixed brake caliper assembly 500. The results showed that, after bench testing and vehicle road testing, the drag torque was reduced by 32%, the rattle noise was completely eliminated, and the performance did not degrade after 100,000 kilometers of durability testing, meeting all the technical requirements of the vehicle.

[0052] Understandably, the fixed brake caliper assembly 500 can significantly reduce the drag torque of the brake caliper 600 by more than 30%, and the brake pads 700 return to their original position more fully and slide more smoothly, effectively reducing fuel consumption and component wear. It suppresses the movement and collision of the brake pads 700 from the source, completely eliminating rattling noise. The braking NVH performance reaches the industry-leading level, solving the common industry problem of difficulty in controlling the drag torque of the brake pads 700 and brake disc in existing fixed brake caliper 600 and brake disc, as well as the rattling noise problem caused by gap collision in the braking system, significantly improving the braking NVH performance.

[0053] Understandably, the auxiliary return force of the auxiliary elastic element 800 is stable at 8~16N, with precise and controllable force value, and can be adapted to different specifications of brake blocks 700; the fixed brake caliper assembly 500 has a simple structure, quick installation, and reliable fixation, requires little space for layout, does not require modification of the brake caliper body of the brake caliper 600, and does not increase additional mold opening costs; adopting a modular design, it can be directly compatible with all existing fixed brake caliper 600 models on the same platform, with extremely strong platform versatility, solving the problems of complex return and noise reduction structures, poor versatility, and high modification costs in existing fixed brake caliper 600 technologies.

[0054] like Figure 4 As shown, the assembly method of this embodiment of the invention is applied to a fixed brake caliper assembly 500. The assembly method includes steps S100 to S400.

[0055] Step S100: Pre-install brake block 700 and muffler 900.

[0056] It is understandable that the two lateral limiting structures 910 at both ends of the muffler 900 are elastically fitted to the two ends of the brake block 700 along its long end.

[0057] Step S200: Install the locating pin 610 and the auxiliary elastic element 800 into the brake block 700.

[0058] Understandably, the brake block 700 is inserted into the open end of the auxiliary elastic member 800, and the positioning pin 610 is installed so that the positioning pin 610 abuts against the closed end of the auxiliary elastic member 800.

[0059] Step S300: Install the brake block 700 into the cavity of the brake caliper 600.

[0060] The brake block 700, which is connected to the muffler 900, the positioning pin 610 and the auxiliary elastic element 800, is installed into the cavity of the brake caliper 600, so that the two lateral limiting structures 910 are elastically fitted with the two guide surfaces of the brake caliper 600.

[0061] In step S400, the main compression spring 620 and the dust cover are assembled on the brake caliper 600.

[0062] Understandably, the wire figure-eight spring and the flanged muffler 900, which are independent standard parts, can be pre-installed on the brake block 700 without changing the original assembly standard, so that the assembly process is completely consistent with the conventional brake caliper 600, making assembly convenient and quick.

[0063] This invention also provides a vehicle including the fixed brake caliper assembly 500 described in the above embodiments.

[0064] The vehicle can be a private car, such as a sedan, SUV, MPV, or pickup truck. It can also be a commercial vehicle, such as a van, bus, small truck, or large semi-trailer. The vehicle must have an electric motor capable of outputting power or acting as a generator to store mechanical energy. When the vehicle is a new energy vehicle, it can be a hybrid or a pure electric vehicle.

[0065] Since the vehicle applies all the technical solutions of the above-described fixed brake caliper assembly 500 or assembly method, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0066] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A fixed brake caliper assembly, characterized in that, The device includes a brake caliper, a brake block, an auxiliary elastic element, and a noise-reducing plate. The brake caliper includes a locating pin and a main compression spring. The auxiliary elastic element is engaged between the locating pin and the brake block. The auxiliary elastic element and the main compression spring form a double-sided auxiliary return structure. The noise-reducing plate has lateral limiting structures at both ends along the long end of the brake block. The two lateral limiting structures elastically fit with the two guide surfaces of the brake caliper.

2. The fixed brake caliper assembly according to claim 1, characterized in that, The auxiliary elastic element has a figure-eight shaped structure. The open end of the auxiliary elastic element is engaged with the brake block, and the closed end of the auxiliary elastic element abuts against the positioning pin.

3. The fixed brake caliper assembly according to claim 2, characterized in that, The auxiliary elastic elements are arranged symmetrically.

4. The fixed brake caliper assembly according to claim 3, characterized in that, The auxiliary elastic element provides an auxiliary return force of 8 to 16 Newtons.

5. The fixed brake caliper assembly according to claim 1, characterized in that, The angle between the lateral limiting structure and the sound-absorbing plate is 90 degrees.

6. The fixed brake caliper assembly according to claim 5, characterized in that, The height of the lateral limiting structure is 2 to 3 millimeters.

7. The fixed brake caliper assembly according to claim 2, characterized in that, The auxiliary elastic element is a steel wire figure-eight spring.

8. The fixed brake caliper assembly according to claim 1, characterized in that, The lateral limiting structure is a flange.

9. An assembly method, characterized in that, Applied to the fixed brake caliper assembly as described in any one of claims 1 to 8, the assembly method includes the following steps: Pre-installed brake pads and mufflers; Install the locating pin and auxiliary elastic element into the brake block; Install the brake pads into the cavity of the brake caliper; The brake caliper is fitted with a main compression spring and a dust cover.

10. A vehicle, characterized in that, Includes the fixed brake caliper assembly as described in any one of claims 1 to 8.

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