A fixed brake caliper assembly

Abstract

The present invention relates to a fixed brake caliper assembly, belonging to the technical field of automotive parts, and comprises a brake caliper body having a brake disc avoidance hole, brake pads located on both sides of the brake disc and connected to the brake caliper body at both ends by guide pins, a piston mounted on the brake caliper body to drive the brake pads toward the brake disc, and an elastic reset mechanism for automatically resetting the brake pads. The elastic reset mechanism comprises return springs disposed at both ends of the brake caliper body, the return springs being mounted on the brake caliper body via a fixing member disposed in the middle thereof, the two ends of the return springs being respectively clamped in limiting holes provided on the back plate of the brake pad; a claw connected to the inner hole of the piston is provided on the back plate of the brake pad so that the piston drives the brake pad equipped with the claws to return together; and a spring sheet is provided above the brake pad to apply pressure to the brake pad. The present invention not only solves the problem of drag force between the brake pad and the brake disc, but also effectively eliminates abnormal noise caused by the impact of the brake pad and the brake caliper.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile parts and relates to a fixed brake caliper assembly. Background Art

[0002] The drag force of the brake caliper assembly directly affects the fuel consumption and CO2 emissions of fuel-powered vehicles, as well as the range of electric vehicles. However, the brake caliper assemblies currently used in the brake industry do not have the function of automatically returning the brake pads. After the brakes are released, the rotating brake disc must be adjusted to impact the brake pads, releasing the pads from the disc.

[0003] Since the inner and outer brake pads cannot be reset in time, the reasonable gap between the brake disc and the brake pad cannot be guaranteed. There is still friction between the brake disc and the brake pad, which easily generates drag force, increasing the vehicle's fuel consumption (reduced mileage) and greater CO2 emissions, polluting the atmosphere.

[0004] In addition, it is very difficult to suppress the noise of the opposed fixed brake caliper assembly used in the existing brake industry, and the noise can cause certain harm to the human body. Summary of the Invention

[0005] In view of this, an object of the present invention is to provide a fixed brake caliper assembly to solve the drag force problem between the brake pad and the brake disc.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A fixed brake caliper assembly includes a brake caliper body with a brake disc avoidance hole, brake pads located on both sides of the brake disc and connected to the brake caliper body at both ends by guide pins, a piston installed on the brake caliper body to drive the brake pads to move toward the brake disc, and an elastic reset mechanism for automatically resetting the brake pads. The elastic reset mechanism includes return springs arranged at both ends of the brake caliper body, the return springs are installed on the brake caliper body through a fixing member arranged in the middle thereof, the two ends of the return springs are respectively clamped in limiting holes provided on the back plate of the brake pad, and the return springs contact the lower side of the limiting hole to apply downward pressure to the brake pad; a claw connected to the inner hole of the piston is provided on the back plate of the brake pad so that the piston drives the brake pad equipped with the claws to return together.

[0008] Optionally, a spring sheet is provided above the brake block to apply pressure to the brake block.

[0009] Optionally, the spring leaf is installed in a groove of the brake caliper body cross beam through a claw portion.

[0010] Optionally, both ends of the spring sheet are supported on the arc of the limiting surface of the brake block back plate.

[0011] The middle part of the return spring has an annular ring structure, and the return spring is sleeved on the fixing piece through the annular ring structure. The fixing piece is provided with a pressing piece to limit the axial position of the return spring.

[0012] Optionally, the return spring includes a fixed part with an annular ring structure in the middle, and the two sides of the fixed part are sequentially a rebound part, a limiting part, a positioning part and a plug-in part. The annular ring structure of the fixed part matches the fixing part, the positioning part contacts the lower side surface of the limiting hole, the limiting part and the plug-in part contact the inner side surface and the outer side surface of the brake block respectively, and the rebound part is compressed to generate a rebound force.

[0013] Optionally, the end of the return spring is U-shaped.

[0014] Optionally, the return spring is formed by bending an elastic material with a circular cross section.

[0015] Optionally, a damper is provided on the back plate of the brake block.

[0016] Optionally, a rubber seal is provided between the brake caliper body and the piston.

[0017] The beneficial effects of the present invention are:

[0018] 1. The present invention provides an elastic return mechanism, and installs the return spring of the elastic return mechanism on the brake caliper body through a fixing member provided in the middle thereof, and clamps the two ends of the return spring in the limiting holes located on the back plate of the brake pad, thereby reliably realizing the active return of the brake pad and solving the problem of drag force between the brake pad and the brake disc.

[0019] 2. The spring sheet of the present invention is supported on the back plate of the brake pad, applying positive pressure to the guide pin to the brake pad, and at the same time providing rebound tension perpendicular to the positive pressure, which can effectively eliminate the abnormal sound caused by the impact between the brake pad and the brake caliper.

[0020] 3. Both ends of the spring sheet of the present invention are supported on the arc of the limiting surface on the back plate of the brake block. The brake block returns to its initial position before braking through the rebound of the spring sheet, thereby ensuring a certain gap between the brake block and the force-bearing surface of the brake caliper, reducing friction, and effectively reducing the sliding resistance of the brake block.

[0021] 4. The brake pad back plate of the present invention is equipped with a claw, which is connected to the inner hole of the piston. After the brake is released, the piston returns and drives the brake pad equipped with the claw to return together, so that the brake pad is away from the brake disc, effectively reducing the drag between the brake pad and the brake disc.

[0022] 5. The present invention is provided with a double reset structure of a clamping claw and a return spring, which increases the reliability of the reset.

[0023] 6. The end surface of the back plate of the brake pad of the present invention that bears the braking force is provided with a damper, which can change the vibration mode of the brake caliper assembly during braking and effectively suppress noise.

[0024] 7. The end surface of the back plate of the brake block of the present invention that bears the braking force is provided with a damper, which can buffer the impact during braking and non-braking processes and effectively suppress noise.

[0025] Other advantages, objects, and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art upon examination of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0027] Figure 1 Schematic diagram of the structure of the brake caliper assembly of the present invention;

[0028] Figure 2 This is a schematic diagram of the installation of the return spring, claw, and spring leaf;

[0029] Figure 3 Schematic diagram of the structure of the piston;

[0030] Figure 4 Schematic diagram of the structure of the return spring;

[0031] Figure 5 Schematic diagram of the force on the spring leaf.

[0032] Figure numerals: piston 1, piston inner hole 111, seal 2, dust cover 3, outer brake pad 4, guide pin 5, spring leaf 6, spring leaf claw 61, spring leaf pressing part 62, fixing screw 7, return spring 8, fixing part 81, rebound part 82, limiting part 83, positioning part 84, plug-in part 85, brake caliper body 9, inner brake pad 10, claw 101, outer side surface 102 of back plate, limiting hole 103, inner side surface 104 of back plate, plug 11, oil hole plug 12, bushing 13, exhaust screw assembly 14. DETAILED DESCRIPTION

[0033] The following describes the embodiments of the present invention by means of specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0034] Among them, the accompanying drawings are only for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the dimensions of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings.

[0035] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0036] See also Figures 1 to 5 A fixed brake caliper assembly includes a brake caliper body 9 with a brake disc avoidance hole, brake pads located on both sides of the brake disc and connected to the brake caliper body 9 at both ends by guide pins, a piston 1 installed on the brake caliper body 9 to drive the brake pad to move toward the brake disc, and an elastic reset mechanism for automatically resetting the brake pad. The elastic reset mechanism includes return springs 8 arranged at both ends of the brake caliper body 9. The return spring 8 is installed on the brake caliper body 9 through a fixing member arranged in the middle thereof. The two ends of the return spring 8 are respectively clamped in the limiting holes provided on the back plate of the brake pad; the back plate of the brake pad is provided with a claw 101 that is interference-connected with the inner hole 111 of the piston so that the piston 1 drives the brake pad equipped with the claw 101 to return together.

[0037] Optionally, a spring sheet 6 is provided above the brake pad to apply pressure to the brake pad; the spring sheet 6 is installed in the groove of the crossbeam of the brake caliper body 9 through a claw; the two ends of the spring sheet 6 are supported on the arc of the limiting surface of the brake pad back plate; the return spring 8 includes a fixing portion 81 with an annular ring structure in the middle, and the two sides of the fixing portion 81 are sequentially provided with a rebound portion 82, a limiting portion 83, a positioning portion 84 and a plug-in portion 85; the annular ring structure of the fixing portion 81 matches the fixing piece, and the return spring 8 is sleeved on the fixing piece through the annular ring, and the fixing piece is provided with a pressing piece to limit the axial position of the return spring 8; the end of the return spring 8 is formed by the limiting portion 83, the positioning portion 84 and the plug-in portion 85. The positioning portion 84 and the plug-in portion 85 form a U-shaped connection structure, and the positioning portion 84 of the return spring 8 contacts the lower side of the limiting hole to apply downward pressure to the brake pad, the limiting portion 83 and the plug-in portion 85 contact the inner and outer sides of the brake pad respectively, and the rebound portion 82 is compressed to generate a rebound force; the return spring 8 is formed by bending an elastic material with a circular cross-section; a damper is provided on the end face of the back plate of the brake pad that bears the braking force, which can buffer the impact during braking and non-braking processes, change the vibration mode of the brake caliper assembly during braking, and effectively suppress noise; a rubber seal 2 is provided between the brake caliper body 9 and the piston 1.

[0038] Example

[0039] A fixed brake caliper assembly, see Figures 1 to 5The figure shows the following structure: piston 1, piston inner hole 111, seal 2, dust cover 3, outer brake pad 4, guide pin 5, spring leaf 6, spring leaf claw portion 61, spring leaf pressing portion 62, fixing screw 7, return spring 8, fixing portion 81, rebound portion 82, limiting portion 83, positioning portion 84, plug portion 85, brake caliper body 9, inner brake pad 10, claw 101, back plate outer side surface 102, limiting hole 103, back plate inner side surface 104, plug 11, oil hole plug 12, bushing 13 and exhaust screw assembly 14. The brake caliper assembly includes a brake caliper body 9 with a brake disc avoidance hole, an outer brake shoe 4 and an inner brake shoe 10 located on both sides of the brake disc and connected to the brake caliper body 9 at both ends by guide pins 5, a piston 1 installed on the brake caliper body 9 to drive the outer brake shoe 4 or the inner brake shoe 10 to move toward the brake disc, and an elastic reset mechanism for automatically resetting the outer brake shoe 4 and the inner brake shoe 10, the elastic reset mechanism includes a return spring 8 and a claw 101 relatively arranged on both sides of the brake disc, a fixing screw 7 is provided above the middle part of the return spring 8, two ends of the return spring 8 are supported on the outer brake shoe 4 and the inner brake shoe 10 and a limiting hole 103 is provided at the position corresponding to the return spring 8 so that the return spring 8 is stuck in the limiting hole 103, and the two ends of the return spring 8 have a limiting part 83, a positioning part 84 and a plug-in part 85 arranged in sequence, the plug-in part 85 is in contact with the outer side surface 102 of the back plate of the outer brake shoe 4 and the outer side surface 102 of the back plate of the inner brake shoe 10, and the positioning part 84 The cam 82 of the inner brake shoe 10 is in contact with the lower side surface of the limiting hole 103, and a downward force is applied to make the outer brake shoe 4 and the inner brake shoe 10 contact with the outer circular surface of the guide pin 5, and the limiting portion 83 contacts the inner side surface 104 of the back plate of the outer brake shoe and the inner side surface 104 of the back plate of the inner brake shoe 10. After the brake is released, the return portion 82 of the return spring 8 is compressed and deformed to generate a rebound force, and the limiting portion 83 of the return spring 8 pushes the outer brake shoe 4 and the inner brake shoe 10 to move toward the direction of the piston 1, and the outer brake shoe 4 and the inner brake shoe 10 are away from the brake disc, reducing the drag between the outer brake shoe 4 and the inner brake shoe 10 and the brake disc; after the brake is released, the piston 1 returns to the cylinder hole of the brake caliper body 9 as the seal 2 rebounds. During the return process of the piston 1, the outer brake shoe 4 and the inner brake shoe 10 equipped with the spring sheet claw 61 are driven to return to the cylinder hole together, and the outer brake shoe 4 and the inner brake shoe 10 are away from the brake disc, reducing the drag between the outer brake shoe 4 and the inner brake shoe 10 and the brake disc.

[0040] The outer brake pad 4 and the inner brake pad 10 are arranged on both sides of the brake disc; the spring sheet 6 is installed on the brake caliper body 9 through the spring sheet claw 61 to press the outer brake pad 4 and the inner brake pad 10 onto the two guide pins 5, providing the outer brake pad 4 and the inner brake pad 10 with positive pressure toward the guide pins 5, so that the outer brake pad 4 and the inner brake pad 10 are tightly fitted together with the two guide pins 5; the piston 1 is installed in the brake caliper body 9, sealed by the seal 2, and dust-proofed by the dust cover 3. The piston 1 pushes the outer brake pad 4 and the inner brake pad 10 to slide along the two guide pins 5 and contact the brake disc to achieve braking.

[0041] The limiting part 83 of the return spring 8 is stuck in the inner side surface 104 of the back plate of the outer brake shoe 4 and the inner side surface 104 of the back plate of the inner brake shoe 10, and the rebound part 82 of the return spring 8 is deformed to provide positive pressure to the outer brake shoe 4 and the inner brake shoe 10 and the rebound force of the brake shoe after the brake is released; the spring sheet pressing parts 62 at both ends of the spring sheet 6 are in contact with the arc surface of the outer brake shoe 4 and the inner brake shoe 10 at the corresponding positions. During the braking process, the brake shoe moves circumferentially with the rotation direction of the brake disc, and the spring sheet rebound part 63 of the spring sheet 6 is deformed. The spring sheet 6 generates a force F1 in the opposite direction of the wheel rotation direction on the brake shoe, as well as a positive pressure F2 of the spring sheet 6 on the outer brake shoe 4 and the inner brake shoe 10. The force is shown in FIG. Figure 5 The same applies when the wheel rotates in the opposite direction. After the brake is released, the spring plate rebound portion 63 of the deformed spring plate 6 pushes the brake pad back to the position before the braking circumferential movement, ensuring the designed clearance between the outer brake pad 4 and the inner brake pad 10 and the load-bearing surface of the brake caliper body 9. After the brake is released, the piston 1 returns to the cylinder bore of the brake caliper body 9 as the seal 2 rebounds. During this return process, the piston 1 drives the outer brake pad 4 and the inner brake pad 10, equipped with the spring plate claw portion 61, back into the cylinder bore, moving the outer brake pad 4 and the inner brake pad 10 away from the brake disc, reducing the drag force between the outer brake pad 4 and the inner brake pad 10 and the brake disc. This embodiment can modify the braking mode by installing dampers on the outer brake pad 4 and the inner brake pad 10 to suppress braking noise.

[0042] The guide pin 5 of the present invention is mounted on the brake caliper body 9. During braking, it receives the braking force from the outer brake pad 4 and the inner brake pad 10, while also providing a guide for the sliding movement of the outer brake pad 4 and the inner brake pad 10. The damper is mounted on the back plates of the outer brake pad 4 and the inner brake pad 10. When the vehicle brakes, the piston 1 transmits pressure to the outer brake pad 4 and the inner brake pad 10. The outer brake pad 4 and the inner brake pad 10 contact the brake disc to achieve braking. During the braking process, the brake pads move circumferentially with the direction of rotation of the brake disc, causing the spring plate rebound portion 63 of the spring plate 6 to deform. After the brake is released, the energy generated by this deformation pushes the outer brake pad 4 and the inner brake pad 10 away from the brake disc.

[0043] In the present invention, after the vehicle brakes are released, the return spring 8 that is stretched and deformed applies a force to the outer brake pad 4 and the inner brake pad 10 in the opposite direction of the movement direction of the piston 1 during the braking process, thereby reliably realizing the active return of the outer brake pad 4 and the inner brake pad 10, thereby reducing the drag torque between the brake disc and the outer brake pad 4 and the inner brake pad 10, thereby reducing the fuel consumption (power consumption) of the entire vehicle, increasing the cruising range, and reducing CO2 emissions; in addition, the spring sheet 6 is supported on the back plates of the outer brake pad 4 and the inner brake pad 10, applying a positive pressure to the outer brake pad 4 and the inner brake pad 10 toward the guide pin 5, and at the same time providing The rebound tension perpendicular to the positive pressure can effectively eliminate the abnormal noise caused by the impact of the outer brake pad 4 and the inner brake pad 10 with the brake caliper body 9; the piston 1 returns to the cylinder hole of the brake caliper body 9 as the seal 2 rebounds. During the return process of the piston 1, the outer brake pad 4 and the inner brake pad 10 equipped with the spring claw 61 are driven to return to the cylinder hole together, and the outer brake pad 4 and the inner brake pad 10 are away from the brake disc, reducing the drag between the outer brake pad 4 and the inner brake pad 10 and the brake disc; the damper is installed on the brake pad back plate, which can change the vibration mode of the brake caliper assembly during braking, thereby suppressing noise and reducing environmental pollution.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions, which should all be included in the scope of the claims of the present invention.

Claims

1. A fixed brake caliper assembly, characterized in that: The invention comprises a brake caliper body having a brake disc avoidance hole, brake pads located on both sides of the brake disc and connected to the brake caliper body at both ends by guide pins, a piston mounted on the brake caliper body to drive the brake pads to move toward the brake disc, and an elastic reset mechanism for automatically resetting the brake pads. The elastic reset mechanism comprises return springs arranged at both ends of the brake caliper body, the return springs being mounted on the brake caliper body via a fixing member arranged in the middle thereof, the two ends of the return springs being respectively clamped in limiting holes formed in the back plate of the brake pads, and the return springs being in contact with the lower side surfaces of the limiting holes to apply downward pressure to the brake pads; a claw connected to the inner hole of the piston is provided on the back plate of the brake pads so that the piston drives the brake pads equipped with the claws to return together; A spring sheet is provided above the brake pad to apply pressure to the brake pad; The spring sheet is installed in the groove of the cross beam of the brake caliper body through the claw portion; The two ends of the spring sheet are supported on the arc of the limiting surface of the brake block back plate; The middle part of the return spring has an annular ring structure, and the return spring is sleeved on the fixing part through the annular ring structure. The fixing part is provided with a clamping part to limit the axial position of the return spring; the return spring includes a fixing part with an annular ring structure in the middle part, and the two sides of the fixing part are a rebound part, a limiting part, a positioning part and a plug-in part in sequence. The annular ring structure of the fixing part matches the fixing part, the positioning part contacts the lower side surface of the limiting hole, the limiting part and the plug-in part contact the inner side surface and the outer side surface of the brake block respectively, and the rebound part is compressed to generate a rebound force.

2. A fixed brake caliper assembly according to claim 1, characterized in that: The end of the return spring is U-shaped.

3. The fixed brake caliper assembly according to claim 1, characterized in that: The return spring is formed by bending an elastic material with a circular cross section.

4. The fixed brake caliper assembly according to claim 1, characterized in that: A damper is provided on the end surface of the back plate of the brake block that bears the braking force.

5. The fixed brake caliper assembly according to claim 1, characterized in that: A rubber seal is provided between the brake caliper body and the piston.

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