Elastic return power mechanism, disc brake assembly and vehicle

Abstract

The present application relates to the technical field of vehicle parts, in particular to an elastic return power mechanism, a disc brake assembly and a vehicle. The elastic return power mechanism comprises an arched elastic part and a connecting part. The arched elastic part comprises a top plate and two support plates. The top plate is connected between the two support plates. The included angle between the top plate and the support plates is less than 180 degrees. The end of the support plate away from the top plate is a abutting end. The abutting end is used for abutting against a brake caliper support. The two support plates are arranged along the length direction of the top plate. The distance between the abutting end and the top plate is less than the length of the top plate. The connecting part comprises a first connecting plate. The first connecting plate is fixedly connected with the top plate. The first connecting plate is used for connecting with a friction plate. In this way, the problem of how to reduce the size of the elastic return power mechanism while ensuring a larger elastic force of the elastic return power mechanism is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle parts, in particular to an elastic return power mechanism, a disc brake assembly and a vehicle. BACKGROUND

[0002] The vehicle brake friction plate is the core component of the vehicle braking system, and its main function is to generate resistance through friction with the brake disc or brake drum, thereby converting the kinetic energy of the vehicle into heat energy, so as to achieve the deceleration or parking of the vehicle. During braking, the brake friction plate is pressed against the brake disc; and when the braking is over and the brake is released, the friction plate needs to return to its static position, and this process is completed by the elastic return power mechanism. The elastic return power mechanism is a key component in the braking system that ensures the friction plate to smoothly separate from the brake disc and restore the initial position after braking is released, and it is usually achieved by installing an elastic sheet inside the brake caliper or brake caliper, and using the elastic force of the elastic sheet to push the friction plate to reset.

[0003] However, in order to ensure that the elastic sheet meets the requirement of a larger elastic force, it is necessary to ensure that the size of the elastic sheet meets the requirement, so as to meet the elastic force required for the reset of the friction plate. However, the space in the vehicle braking system is limited, and the larger size of the elastic sheet is difficult to assemble into the limited space. If the size of the elastic sheet is reduced, the elastic force required for the reset of the friction plate cannot be met. SUMMARY

[0004] In order to solve the problem of how to ensure a larger elastic force of the elastic return power mechanism while reducing the size of the elastic return power mechanism, the present application provides an elastic return power mechanism, a disc brake assembly and a vehicle.

[0005] In a first aspect, the present application provides an elastic return power mechanism, which comprises:

[0006] An arched elastic force part, comprising a top plate and two support plates; the top plate is connected between the two support plates; the included angle between the top plate and the support plate is less than 180°; the end of the support plate away from the top plate is a abutting end; the abutting end is used for abutting against the brake caliper support; the two support plates are arranged along the length direction of the top plate; the distance between the abutting end and the top plate is less than the length of the top plate;

[0007] A connecting part, comprising a first connecting plate; the first connecting plate is fixedly connected with the top plate; the first connecting plate is used for connecting with the friction plate.

[0008] In some embodiments, the distance between the abutting end and the top plate is the length of the support plate; and the length of the support plate is 60% to 75% of the length of the top plate.

[0009] In some embodiments, the first reference section is perpendicular to the top plate and intersects with both support plates simultaneously; the projection of the support plate in the first reference section is arc-shaped; the concave sides of the two support plates are arranged facing each other.

[0010] In some embodiments, the distance between the abutting end and the top plate is the length of the support plate; the length of the support plate is 25% to 40% of the radius of the support plate.

[0011] In some embodiments, the arched elastic part further includes a base plate; two base plates are provided; the base plates and the support plates are provided in a one-to-one correspondence; the abutting ends of the base plates and the support plates are fixedly connected; in the natural state, the arched elastic part has an angle between the base plate and the top plate, and the side of the base plate away from the abutting end is bent toward the direction closer to the top plate.

[0012] In some embodiments, the second reference section is perpendicular to the top plate; the second reference section is perpendicular to the first reference section; in the projection of the elastic return power mechanism onto the second reference section, the angle between the first connecting plate and the top plate is a first angle, which is between 90° and 100°.

[0013] In some embodiments, the elastic return power mechanism further includes a limiting part; the limiting part includes a first limiting plate and a second limiting plate; one end of the first limiting plate is fixedly connected to the top plate, and the other end of the first limiting plate is fixedly connected to the second limiting plate; the included angle between the second limiting plate and the first reference section is a second included angle; the second included angle is an acute angle, and the end of the second limiting plate away from the first limiting plate is bent toward the direction close to the connecting part.

[0014] In some embodiments, the second included angle is positively correlated with the first included angle.

[0015] In a second aspect, the present invention provides a disc brake assembly, the disc brake assembly comprising:

[0016] The elastic return power mechanism as described in any one of the first aspects;

[0017] The brake caliper bracket has its abutting end of the support plate in the elastic return power mechanism pressed against it.

[0018] The piston is fixedly connected to the brake caliper bracket;

[0019] Two friction plates are driven by the piston to move towards each other; each friction plate has at least one elastic return power mechanism; the end of the first connecting plate of the elastic return power mechanism away from the arched elastic part is fixedly connected to the corresponding friction plate.

[0020] A brake disc, located between the two friction pads; the brake disc is used for fixed connection with the wheel.

[0021] Thirdly, the present invention provides a vehicle, the vehicle comprising:

[0022] Vehicle body;

[0023] Wheels, which are rotatably connected to the vehicle body;

[0024] As described in the second aspect, the disc brake assembly has a brake disc fixedly connected to the wheel; and the brake caliper bracket of the disc brake assembly is fixedly connected to the vehicle body.

[0025] To address the challenge of reducing the size of the elastic return mechanism while ensuring a large elastic force, this invention offers the following advantages:

[0026] By setting up an arched elastic section and a connecting section to form a two-stage return force structure, the first stage of the return force structure involves the first connecting plate pulling the top plate towards the brake caliper bracket, bending it. The second stage of the return force structure involves the top plate pulling the support plate, bending it. This satisfies the requirement that the return force gradually increases as the friction pad wears. Furthermore, the distance between the abutting end and the top plate is less than the length of the top plate, reducing the size of the arched elastic section along the friction pad's movement direction while still meeting the high return force requirement. This ultimately solves the problem of the elastic return power mechanism having a large size while ensuring the return force. Attached Figure Description

[0027] Figure 1 A front view of an elastic sheet is shown;

[0028] Figure 2 A schematic diagram of an embodiment of an elastic return power mechanism is shown;

[0029] Figure 3 It shows Figure 2 Side view of the elastic return power mechanism in the middle;

[0030] Figure 4 It shows Figure 2 A front view of the elastic return mechanism in the middle;

[0031] Figure 5 A schematic diagram of a disc brake assembly according to one embodiment is shown;

[0032] Figure 6 It shows Figure 5 A front view of the disc brake assembly in the image;

[0033] Figure 7A schematic diagram of a vehicle according to one embodiment is shown.

[0034] Reference numerals: Arched elastic part 10; Top plate 11; Support plate 12; Bottom plate 13; Connecting part 20; First connecting plate 21; Second connecting plate 22; Restricting part 30; First limiting plate 31; Second limiting plate 32; Third limiting plate 33; Brake caliper bracket 40; Friction plate 50; Piston 60; Body body 70; Wheel 80; Elastic plate 90; Connecting end 91; Abutting end 92; Bending part 93; First included angle α1; Second included angle α2. Detailed Implementation

[0035] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, and are not intended to imply any limitation on the scope of the disclosure.

[0036] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientations or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the terms "installed", "set up", "equipped with", "connected", and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0037] The vehicle brake friction pads 50 generate resistance through friction with the brake disc or brake drum, converting the vehicle's kinetic energy into heat energy, thereby achieving vehicle deceleration or stopping. During braking, the brake friction pads 50 are pressed against the brake disc; when braking ends and the brake is released, the friction pads 50 need to return to their stationary position, a process completed by an elastic return mechanism. Figure 1As shown, the current elastic return mechanism is a bent elastic plate 90, which includes a connecting end 91, an abutting end 92, and a bent portion 93. The connecting end 91 is riveted to the friction plate 50, and the abutting end 92 abuts against the blank surface of the brake caliper bracket 40 away from the friction plate 50. When the friction plate 50 is braked by the thrust of the piston 60, the connecting end 91 moves synchronously with the friction plate 50, thereby driving the bent portion 93 to move towards the connecting end 91, that is, to move in an arc with the abutting end 92 as the center, reducing the angle β2 of the connection portion 20 between the elastic plate 90 and the friction plate 50 to β1. In order to ensure a large deformation limit, the distance from the bent portion 93 to the abutting end 92 needs to be set to be relatively long. However, this will result in a large size of the elastic plate 90, which is not conducive to its assembly. At the same time, in the disc brake assembly, the space is relatively limited, so it is necessary to further limit the size of the elastic plate 90, and also to ensure the return capability of the elastic plate 90. Therefore, in order to solve the above problems, the present invention provides an elastic return power mechanism.

[0038] Example 1:

[0039] In this embodiment, as Figure 2 , Figure 3 , Figure 4 As shown, an elastic return power mechanism includes an arched elastic part 10 and a connecting part 20.

[0040] The arched elastic section 10 includes a top plate 11 and two support plates 12. The top plate 11 connects between the two support plates 12, forming a stable overall structure for the arched elastic section 10 and providing a basis for the generation of rebound force. The included angle between the top plate 11 and the support plates 12 is less than 180°, thus giving the arched structure a certain elastic deformation capability, creating conditions for the generation of return force. The end of the support plate 12 away from the top plate 11 is the abutting end, used to abut against the brake caliper bracket 40, thereby fixing the arched elastic section 10 on the brake caliper bracket 40. The two support plates 12 are spaced apart along the length of the top plate 11, ensuring that the top plate 11 is more evenly stressed, further improving the stability of the structure. The distance between the abutting end and the top plate 11 is less than the length of the top plate 11, thus ensuring that the size of the arched elastic section 10 along the moving direction of the friction plate 50 is relatively low, i.e. Figure 4 As shown, the height dimension of the arched elastic part 10 in the vertical direction is reduced, thus reducing the space occupied by the arched elastic part 10 while ensuring that the arched elastic part 10 has a better return effect.

[0041] The connecting part 20 includes a first connecting plate 21. The first connecting plate 21 is fixedly connected to the top plate 11. This fixed connection ensures a stable connection between the connecting part 20 and the arched elastic part 10, guaranteeing effective force transmission. The first connecting plate 21 is used to connect to the friction plate 50, transmitting the return force generated by the arched elastic part 10 to the friction plate 50. By pulling the top plate 11 towards the brake caliper bracket 40 through the first connecting plate 21, a first-level return force structure is formed. Then, by pulling the two support plates 12 towards the abutment end through the top plate 11, a second-level return force structure is formed. When the friction plate 50 experiences significant wear, i.e., the return force requirement increases, the friction plate 50 can be reset through the second-level return force structure, thereby meeting the high return force requirement of the friction plate 50.

[0042] Preferably, when the vehicle brakes, the first connecting plate 21 pulls the top plate 11, causing the two support plates 12 to deform. After braking ends, the friction plate 50 is reset through the two-stage return force structure formed by the two support plates 12 and the first connecting plate 21, with the first connecting plate 21 located between the two support plates 12. This makes the force transmission more balanced and the return effect better.

[0043] Furthermore, such as Figure 4 As shown, the distance between the abutting end and the top plate 11 is the length of the support plate 12. The length of the support plate 12 is 60% to 75% of the length of the top plate 11. This can avoid the support plate 12 being too long and thus having a large size, and can also prevent the support plate 12 from being too short and unable to undergo elastic deformation. This ensures that the elastic performance of the support plate 12 is effectively utilized, thereby ensuring that the elastic return power mechanism can effectively apply the return force to the friction plate 50.

[0044] Furthermore, the first reference section is perpendicular to the top plate 11, and the first reference section intersects with both support plates 12 simultaneously, that is... Figure 4 This is a schematic projection diagram along the first reference section. The projection of the support plate 12 in the first reference section is arc-shaped. This arc-shaped design avoids stress concentration when the support plate 12 deforms and facilitates deformation, thus improving the elastic performance and service life of the support plate 12. Simultaneously, the concave sides of the two support plates 12 are arranged facing each other, allowing the force direction and deformation trend of the two support plates 12 to match, ensuring balanced transmission of the return force and further optimizing the return effect of the elastic return power mechanism.

[0045] Furthermore, such as Figure 4 As shown, the distance between the abutting end and the top plate 11 is the length of the support plate 12. The length of the support plate 12 is 25% to 40% of the radius of the support plate 12. This makes the curvature of the support plate 12 smaller, ensuring that the support plate 12 has a higher elastic modulus, thereby increasing the magnitude of the second-stage return force and ensuring that the return force of the elastic return power mechanism is large enough to meet the return force requirements of the friction plate 50.

[0046] Furthermore, such as Figure 2 , Figure 4 As shown, the arched elastic part 10 also includes a base plate 13. Two base plates 13 are provided. Each base plate 13 corresponds to one of the support plates 12, ensuring that each support plate 12 can cooperate with the brake caliper bracket 40 through the corresponding base plate 13, guaranteeing balanced force distribution. The base plate 13 and the support plate 12 are fixedly connected at their abutting ends, increasing the stability of the connection and ensuring effective force transmission. In its natural state, the arched elastic part 10 has an angle between the base plate 13 and the top plate 11, with the side of the base plate 13 away from the abutting end bending towards the direction closer to the top plate 11. In the initial state (when the arched elastic part 10 is not under force), the base plate 13 and the brake caliper bracket 40 form line contact. When the arched elastic part 10 is subjected to the tension of the friction plate 50, the side of the base plate 13 away from the abutment end swings away from the top plate 11 until the base plate 13 and the brake caliper bracket 40 form surface contact. As the support plate 12 continues to bend and swing, the angle between the support plate 12 and the base plate 13 gradually decreases, increasing the bending difficulty of the support plate 12. At this time, the third-level return force is formed, which further enhances the elastic force of the elastic return power mechanism.

[0047] Furthermore, the second reference section is perpendicular to the top plate 11, and the second reference section is perpendicular to the first reference section, that is... Figure 3 This is a schematic projection along the second reference section. In the projection of the elastic return power mechanism onto the second reference section, the angle between the first connecting plate 21 and the top plate 11 is a first angle α1, which is between 90° and 100°. This ensures the structural stability of the connection between the first connecting plate 21 and the top plate 11, and also makes it easier for the first connecting plate 21 to transmit tension to the top plate 11 when under stress. This facilitates the effective generation and action of the first-stage return force, ensuring the smoothness of the return process.

[0048] Furthermore, such as Figure 2As shown, the elastic return power mechanism also includes a limiting part 30. The limiting part 30 includes a first limiting plate 31 and a second limiting plate 32. One end of the first limiting plate 31 is fixedly connected to the top plate 11, and the other end of the first limiting plate 31 is fixedly connected to the second limiting plate 32, forming a stable support structure. This provides a limiting effect for the elastic return power mechanism, preventing excessive tension on the friction plate 50 and causing the elastic return power mechanism to detach from the brake caliper bracket 40. The angle between the second limiting plate 32 and the first reference section is a second angle α2. The second angle α2 is an acute angle, and the end of the second limiting plate 32 away from the first limiting plate 31 bends towards the connecting part 20. This effectively limits the range of motion of the connecting part 20 and the arched elastic part 10, preventing the connecting part 20 from affecting the normal operation of the return power mechanism due to excessive displacement. At the same time, the setting of the second angle α2 and the bending direction ensure the accuracy and reliability of the limiting effect, improving the stability of the overall structure.

[0049] Furthermore, such as Figure 2 As shown, the second included angle α2 is positively correlated with the first included angle α1. This should be understood as the second included angle α2 maintaining the same trend as the first included angle α1. When the first included angle α1 changes, the second included angle α2 will change proportionally accordingly. This correlation allows the limiting function of the limiting part 30 to match the force state of the connecting part 20, ensuring that the limiting part 30 can effectively constrain the connecting part 20 under different working conditions. This avoids problems such as limiting failure or excessive restriction due to mismatched angles, thereby ensuring the overall coordination and stability of the elastic return power mechanism.

[0050] In other embodiments, the connecting portion 20 further includes a second connecting plate 22, one end of which is fixedly connected to the first connecting plate 21, and the other end of which is fixedly connected to the friction plate 50. The second connecting plate 22 connects the elastic return power mechanism to the friction plate 50, ensuring the effectiveness of force transmission.

[0051] The limiting part 30 also includes a third limiting plate 33, which is fixedly connected to the end of the second limiting plate 32 away from the first limiting plate 31. The third limiting plate 33 makes it easier to assemble the elastic return power mechanism.

[0052] Example 2:

[0053] In this embodiment, as Figure 5 , 6 As shown, the disc brake assembly includes a resilient return power mechanism, a brake caliper bracket 40, a piston 60, two friction pads 50, and a brake disc.

[0054] The abutting end of the support plate 12 in the elastic return power mechanism abuts against the brake caliper bracket 40, thereby firmly connecting the elastic return power mechanism with the brake caliper bracket 40. At the same time, the return function of the elastic return power mechanism ensures the smooth reset of the friction pad 50 after braking.

[0055] The piston 60 is fixedly connected to the brake caliper bracket 40, which provides a stable mounting base for the piston 60 and facilitates the driving of the friction plate 50.

[0056] The piston 60 drives two friction plates 50 to move towards each other, thereby clamping and braking the brake disc. Simultaneously, each friction plate 50 corresponds to at least one elastic return mechanism. The end of the first connecting plate 21 of the elastic return mechanism, away from the arched elastic part 10, is fixedly connected to the corresponding friction plate 50, ensuring that each friction plate 50 receives sufficient return force for reliable reset.

[0057] The brake disc is located between two friction pads 50 and is used to fix it to the wheel 80. The clamping of the friction pads 50 enables the wheel 80 to decelerate or stop. Through the coordinated operation of various components, the disc brake assembly can stably achieve braking and return functions, ensuring vehicle driving safety.

[0058] Example 3:

[0059] In this embodiment, as Figure 7 As shown, the vehicle includes a body body 70, wheels 80, and a disc brake assembly.

[0060] The wheel 80 is rotatably connected to the body 70, providing a basic rotational structure for vehicle movement.

[0061] The brake disc of the disc brake assembly is fixedly connected to the wheel 80. The braking of the wheel 80 can be used to decelerate or stop the vehicle by braking the brake disc, thus realizing the vehicle braking function. The brake caliper bracket 40 of the disc brake assembly is fixedly connected to the body body 70, providing a stable installation support for the disc brake assembly, ensuring that the force on each component is stable during braking. Through the coordinated cooperation of each part, the vehicle can reliably achieve braking operation and ensure driving safety.

[0062] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes can be made in form and detail without departing from the scope of this disclosure.

Claims

1. A flexible return power mechanism, characterized in that, The elastic return power mechanism includes: An arched elastic section includes a top plate and two support plates; the top plate is connected between the two support plates; the angle between the top plate and the support plates is less than 180°; the end of each support plate away from the top plate is a clamping end; the clamping end is used to clamp a brake caliper bracket; the two support plates are spaced apart along the length of the top plate; the distance between the clamping end and the top plate is less than the length of the top plate; a first reference section is perpendicular to the top plate and intersects both support plates simultaneously. The connecting part includes a first connecting plate; the first connecting plate is fixedly connected to the top plate; the first connecting plate is used to connect with the friction plate; The arched elastic part also includes a base plate; two base plates are provided; the base plates and the support plates are provided in a one-to-one correspondence; the abutting ends of the base plates and the support plates are fixedly connected; The elastic return power mechanism further includes a limiting part; the limiting part includes a first limiting plate and a second limiting plate; one end of the first limiting plate is fixedly connected to the top plate, and the other end of the first limiting plate is fixedly connected to the second limiting plate; the included angle between the second limiting plate and the first reference section is a second included angle; the second included angle is an acute angle, and the end of the second limiting plate away from the first limiting plate is bent toward the direction close to the connecting part.

2. The elastic return power mechanism according to claim 1, characterized in that, The distance between the abutting end and the top plate is the length of the support plate; the length of the support plate is 60% to 75% of the length of the top plate.

3. The elastic return power mechanism according to claim 1, characterized in that, The projection of the support plate in the first reference section is arc-shaped; the concave sides of the two support plates are arranged facing each other.

4. The elastic return power mechanism according to claim 3, characterized in that, The distance between the abutting end and the top plate is the length of the support plate; the length of the support plate is 25% to 40% of the radius of the support plate.

5. The elastic return power mechanism according to claim 3, characterized in that, In its natural state, the arched elastic part has an angle between the bottom plate and the top plate, and the side of the bottom plate away from the abutting end bends toward the direction closer to the top plate.

6. The elastic return power mechanism according to claim 5, characterized in that, The second reference section is perpendicular to the top plate; the second reference section is perpendicular to the first reference section; in the projection of the elastic return power mechanism onto the second reference section, the angle between the first connecting plate and the top plate is the first angle, which is between 90° and 100°.

7. The elastic return power mechanism according to claim 6, characterized in that, The second included angle is positively correlated with the first included angle.

8. A disc brake assembly, characterized in that, The disc brake assembly includes: The elastic return power mechanism as described in any one of claims 1-7; The brake caliper bracket has its abutting end of the support plate in the elastic return power mechanism pressed against it. The piston is fixedly connected to the brake caliper bracket; Two friction plates are driven by the piston to move towards each other; each friction plate has at least one elastic return power mechanism; the end of the first connecting plate of the elastic return power mechanism away from the arched elastic part is fixedly connected to the corresponding friction plate. A brake disc, located between the two friction pads; the brake disc is used for fixed connection with the wheel.

9. A vehicle, characterized in that, The vehicles include: Vehicle body; Wheels, which are rotatably connected to the vehicle body; The disc brake assembly as described in claim 8, wherein the brake disc of the disc brake assembly is fixedly connected to the wheel; and the brake caliper bracket of the disc brake assembly is fixedly connected to the vehicle body.

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