CN221221213U - Friction plate return mechanism and vehicle - Google Patents

Abstract

The application belongs to the technical field of automobile braking, and provides a friction plate return mechanism which is applied to braking of a brake disc and comprises a caliper body, friction plates and a spring piece, wherein the caliper body is provided with two opposite side surfaces which are respectively arranged on two sides of the brake disc, and each opposite side surface is provided with the friction plate in a telescopic manner. The friction disc is provided with a mounting surface which is opposite to the opposite side surface, the spring piece comprises a first connecting part and a second connecting part, the first connecting parts are provided with two ends which are respectively positioned at the two ends of the spring piece, the second connecting part is positioned between the two first connecting parts, the first connecting parts are connected to the mounting surface, and the second connecting parts are connected to the opposite side surface. Therefore, when the braking is finished, the caliper body returns to the initial position, and the friction plate returns to the initial position by means of the deformation force, so that the active return of the friction plate is realized, the dragging moment between the brake disc and the friction plate is reduced, the generation of millstone is avoided, and the energy consumption of a vehicle is also reduced.

Description

Friction plate return mechanism and vehicle

Technical Field

The application belongs to the technical field of automobile braking, and particularly relates to a friction plate return mechanism and a vehicle.

Background

The existing brake caliper assembly generally comprises a brake caliper body, a caliper bracket, an inner friction plate, an outer friction plate and a brake disc arranged between the inner friction plate and the outer friction plate, wherein a hydraulic cylinder is arranged in the brake caliper body, and when in braking, a piston of the hydraulic cylinder pushes the inner friction plate and the outer friction plate to move towards the direction of clamping the brake disc, and finally the brake disc (the brake disc rotates along with wheels) is clamped, so that the vehicle braking is realized. After braking, the piston is first returned, and the inner friction plate and the outer friction plate are then separated from the brake disc by rotation of the brake disc.

However, since the inner friction plate and the outer friction plate are not actively reset, the inner friction plate and the outer friction plate can not reset in time when braking is finished, and further the gap between the brake disc and the friction plate can not be ensured, and the contact pressure still exists between the brake disc and the friction plate, so that dragging torque is easy to generate between the brake disc and the inner friction plate and between the brake disc and the outer friction plate, the friction plate stays for a long time, contacts with the brake disc, generates millstone, and increases the energy consumption of a vehicle.

Disclosure of utility model

In view of the above, the utility model aims to provide a friction plate return mechanism, which aims to solve the technical problems that in the prior art, dragging moment is easy to generate between a brake disc and inner and outer friction plates, so that the friction plates stay for a long time, contact with the brake disc, generate millstone and increase energy consumption of a vehicle.

The utility model provides a friction plate return mechanism which is applied to braking of a brake disc and comprises a caliper body, friction plates and a spring piece, wherein the caliper body is provided with two opposite side surfaces which are respectively arranged on two sides of the brake disc, each opposite side surface is provided with the friction plate through the spring piece, the friction plate is provided with a mounting surface facing the opposite side surface, the spring piece comprises a first connecting part and a second connecting part, the first connecting part is provided with two connecting parts and is respectively positioned at two ends of the spring piece, the second connecting part is positioned between the two first connecting parts, the first connecting part is connected to the mounting surface, the second connecting part is connected to the opposite side surfaces, and the spring piece generates deformation force opposite to the moving direction of the friction plate when the friction plate moves in the direction of clamping the brake disc.

Optionally, a first matching hole is formed in the friction plate, a sliding pin is connected between the two opposite side surfaces, and the sliding pin penetrates through the first matching hole and is in clearance fit with the first matching hole.

Optionally, the mounting surface is provided with a limit groove which is obliquely arranged, the first connecting part is obliquely arranged and has the same inclination direction as that of the limit groove, and the first connecting part is inserted into the limit groove and is connected with the mounting surface.

Optionally, the inclination direction of the limiting groove is inclined from bottom to top.

Optionally, two limiting grooves are provided, and the inclination directions of the two limiting grooves are the same and correspond to the two first connecting portions respectively.

Optionally, two spring pieces are arranged on each friction plate, and the two spring pieces are arranged in parallel.

Optionally, the sliding pin further comprises a compression spring, the compression spring comprises a first elastic part and a second elastic part, the first elastic part is in pressure connection with the sliding pin so that the first elastic part generates deformation force in a first direction, the second elastic part is in pressure connection with the friction plate so that the second elastic part generates deformation force in a second direction, and the first direction is opposite to the second direction.

Optionally, the sliding pin comprises a bolt, a rod body and a limiting head arranged on the end part of the rod body, a pin hole for the bolt to insert is formed in the rod body, a mounting hole for the rod body to pass through is formed in the caliper body, and after the rod body passes through the mounting hole, the bolt is inserted into the pin hole and matched with the limiting head to limit the position of the sliding pin on the caliper body.

Optionally, the second connection portion is located in the middle of the two first connection portions.

The utility model also provides a vehicle comprising the friction plate return mechanism.

The utility model provides a friction plate return mechanism which is applied to braking of a brake disc and comprises a caliper body, friction plates and a spring piece, wherein the caliper body is provided with two opposite side surfaces which are respectively arranged on two sides of the brake disc, and each opposite side surface is provided with the friction plate in a telescopic manner. The friction disc is provided with a mounting surface which is opposite to the opposite side surface, the spring piece comprises a first connecting part and a second connecting part, the first connecting parts are provided with two ends which are respectively positioned at the two ends of the spring piece, the second connecting part is positioned between the two first connecting parts, the first connecting parts are connected to the mounting surface, and the second connecting parts are connected to the opposite side surface. When the friction plate moves towards the direction of clamping the brake disc, the spring piece generates deformation force opposite to the moving direction of the friction plate, so that when braking is finished, the caliper body returns to the initial position, the friction plate returns to the initial position by means of the deformation force, active return of the friction plate is realized, drag torque between the brake disc and the friction plate is reduced, grinding disc noise is avoided, and energy consumption of a vehicle is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of a friction plate return mechanism according to an embodiment of the present application;

FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is a schematic view of the internal structure of a friction plate return mechanism (excluding the caliper body) according to an embodiment of the present application;

Fig. 5 is a schematic structural view of a caliper body according to an embodiment of the present application.

Reference numerals illustrate: 1. a caliper body; 11. opposite sides; 12. a slide pin; 121. a plug pin; 122. a rod body; 1221. a pin hole; 123. a positioning head; 13. a mounting hole; 2. a friction plate; 21. a mounting surface; 211. a limit groove; 211a, a notch; 211b, groove bottom; 211c, lower surface; 22. a first mating hole; 3. a spring piece; 31. a first connection portion; 31a, upper surface; 32. a second connecting portion; 4. a pressure spring; 41. a first elastic portion; 42. and a second elastic part.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

It should be further noted that terms such as left, right, upper, and lower in the embodiments of the present application are merely relative concepts or references to normal use states of the product, and should not be construed as limiting.

Referring to fig. 1 to 3, the present utility model provides a friction plate return mechanism applied to brake disc braking, comprising a caliper body 1, friction plates 2 and a spring plate 3, wherein the caliper body 1 is provided with two opposite side surfaces 11 respectively arranged at two sides of the brake disc, each opposite side surface 11 is provided with the friction plate 2 through the spring plate 3, the friction plate 2 is provided with a mounting surface 21 facing the opposite side surface 11, the spring plate 3 comprises a first connecting part 31 and a second connecting part 32, the first connecting part 31 is provided with two and is respectively positioned at two ends of the spring plate 3, the second connecting part 32 is positioned between the two first connecting parts 31, the first connecting part 31 is connected to the mounting surface 21, the second connecting part 32 is connected to the opposite side surfaces 11, and the spring plate 3 generates deformation force opposite to the moving direction of the friction plate 2 when the friction plate 2 moves to clamp the brake disc.

In the present application, the first connection portion 31 and the mounting surface 21 may be connected by welding, inserting, bolting, riveting, or the like, and the spring piece 3 may generate a deformation force opposite to the moving direction of the friction plate 2 only when the friction plate 2 is kept moving in the brake disc direction. Similarly, the connection between the second connection portion 32 and the opposite side 11 may be in the form of welding, plugging, bolting, riveting, or the like, and the second connection portion 32 may be fixed to the opposite side 11 only when the friction plate 2 is moved in the direction of the brake disc.

Referring to fig. 4, in one possible embodiment, the friction plate 2 is provided with a first mating hole 22, and a sliding pin 12 is connected between two opposite sides 11, and the sliding pin 12 passes through the first mating hole 22 and is in clearance fit with the first mating hole 22. The current fixed caliper assembly mainly comprises a caliper body 1, a piston (not shown in the drawing) and two friction plates 2 (comprising an inner friction plate 2 and an outer friction plate 2), wherein an accommodating space is formed between two opposite side surfaces 11 and used for accommodating the inner friction plate 2 and the outer friction plate 2, the friction plates 2 are arranged on the caliper body 1 through two sliding pins 12, and the piston is positioned in the caliper body 1 and driven by hydraulic pressure or a motor. The inner friction plate 2 and the outer friction plate 2 clamp the brake disc to realize braking under the pushing of the piston. After the braking is finished, the inner friction plate 2 and the outer friction plate 2 return under the action of the elastic force of the spring pieces 3 of the inner friction plate 2 and the outer friction plate 2, so that the friction plates 2 and the sliding pins 12 are in clearance fit. The clearance fit between the friction plate 2 and the slide pin 12 makes the driving force required by the piston smaller and the response of the friction plate 2 more sensitive during braking.

Referring to fig. 3 and 4, in one possible embodiment, the mounting surface 21 is provided with a limit groove 211 that is obliquely arranged, the first connection portion 31 is obliquely arranged and has the same inclination direction as that of the limit groove 211, and the first connection portion 31 is inserted into the limit groove 211 and connected to the mounting surface 21. The present embodiment provides a simpler connection manner, and facilitates the installation and removal of the first connection portion 31 and the friction plate 2. Since the limiting groove 211 and the first connecting portion 31 are both disposed obliquely, the first connecting portion 31 can provide a component force as a supporting force or a restoring force in different situations. The description will be given taking fig. 3 and 4 as examples. As shown in fig. 4, two slide pins 12 are provided, and the plane on which the two slide pins 12 are located is a horizontal plane. Referring to fig. 2 and 3, the inclination direction of the limiting groove 211 is from bottom to top, and forms an included angle with the horizontal plane. Accordingly, the first connecting portion 31 is inclined from bottom to top. Specifically, the limit groove 211 has a notch 211a and a groove bottom 211b, the inclination direction of the limit groove 211 is from the notch 211a to the groove bottom 211b, and the distance between the groove bottom 211b and the slide pin 12 is smaller than the distance between the notch 211a and the slide pin 12, i.e., the groove bottom 211b is closer to the slide pin 12. During braking, the piston pushes the friction plate 2, the friction plate 2 is displaced along the horizontal plane, and the spring piece 3 is deformed by the pressure applied by the lower surface 211c of the limiting groove 211 to the upper surface 31a of the first connecting portion 31 in the horizontal direction. After the braking is finished, the deformation force of the spring plate 3 makes the upper surface 31a of the first connecting portion 31 apply pressure to the lower surface 211c of the limit groove 211, and this pressure can be used as a restoring force to the friction plate 2.

In addition, in order to solve the problem of the return of the friction plates, a person skilled in the art usually performs the active return of the friction plates 2 by adding a splayed spring between the two friction plates 2, the splayed spring being disposed on the top of the friction plates 2. The splayed spring can only limit one end of the friction plate 2 and cannot be fixed at four points. In the automatic carrying process in the production line, the other end of the friction plate 2 easily falls towards the direction of the other friction plate 2 under the condition of no blocking object, equipment alarm is easily caused, and the production beat is reduced. To avoid the above, it is generally necessary to add a separately designed clip to catch the other end of the friction plate 2 to meet the demand of preventing the friction plate 2 from falling off. In the automatic carrying process of the friction plate return mechanism in the production line, the second connecting parts 32 are connected to the opposite side surfaces 11 of the caliper body 1, so that the spring piece 3 is fixedly connected with the caliper body 1, the number of the first connecting parts 31 is two, and the spring piece 3 and the friction plate 2 form a plurality of connecting points, thereby effectively reducing the falling risk of the friction plate 2, improving the production beat and reducing the tool investment.

Preferably, two limiting grooves 211 are provided on each mounting surface 21, and the two limiting grooves 211 have the same inclination direction and respectively correspond to the two first connecting portions 31. The connecting line between the two limit grooves 211 is perpendicular to the plane in which the two slide pins 12 are located. The two limit grooves 211 have the same inclination direction, so that the two first connecting parts 31 can be simultaneously inserted into the corresponding limit grooves 211, and the installation efficiency is improved. Of course, the direction of the limiting groove 211 may be set according to the actual application situation. For example, the line between the two limit grooves 211 is parallel to the plane in which the two slide pins 12 lie.

Referring to fig. 4, in one possible embodiment, the spring plate 3 on each friction plate 2 is provided with two pieces, and the two pieces of spring plates 3 are arranged in parallel. Due to the large area of the friction plate 2, the provision of only one spring plate 3 may cause the friction plate 2 to lose balance during return or the return force may be insufficient. The two spring pieces 3 enable the friction plate 2 to keep balance in the return process and provide enough return force, so that the friction between the friction plate 2 and a brake disc caused by inclination or insufficient return force in the return process is avoided, and the dragging moment is further reduced.

Referring to fig. 4, in one possible embodiment, the compression spring 4 further includes a compression spring 4, and the compression spring 4 includes a first elastic portion 41 and a second elastic portion 42, wherein the first elastic portion 41 is pressed against the slide pin 12 so that the first elastic portion 41 generates a deformation force in a first direction, and the second elastic portion 42 is pressed against the friction plate 2 so that the second elastic portion 42 generates a deformation force in a second direction, and the first direction is opposite to the second direction. Because the friction plate 2 and the sliding pin 12 are in clearance fit, the friction plate 2 can generate impact noise due to bumpy road surfaces or vibration excitation working conditions when the vehicle runs or due to braking impact when braking. When assembled, the first elastic part 41 and the sliding pin 12 are mutually pressed and connected, the sliding pin 12 applies pressure to the first elastic part 41 in the radial direction, and the pressure enables the first elastic part 41 to elastically deform and has deformation force; the second elastic portion 42 can be pressed against the friction plate 2, and there is a downward (or upward) pressure on the friction plate 2, so that the second elastic portion 42 is elastically deformed and provided with a deformation force. It is noted that the deformation force of the first elastic portion 41 is opposite to the direction of the deformation force of the second elastic portion 42. The return mechanism of the friction plate 2 can limit the freedom degree of the friction plate 2 from the upper direction and the lower direction by arranging the first elastic part 41 and the second elastic part 42 on the pressure spring 4, give the return force in the two directions and play a role in buffering, for example, under a bumpy road surface, the first elastic part 41 and the second elastic part 42 limit the up-and-down runout of the friction plate 2, thereby eliminating the impact and friction noise between the friction plate 2 and the sliding pin 12, ensuring the stability of the friction plate 2 under the conditions of bumpy road surface or excitation working condition, and the like, and playing the role in eliminating noise. Referring to fig. 4, the first elastic portion 41 is pressed against the bottom of the slide pin 12, so that the first direction is upward, and the second elastic portion 42 is pressed against the top of the friction plate 2, so that the second direction is downward, and thus the first elastic portion 41 and the second elastic portion 42 can generate deformation forces in opposite directions.

Referring to fig. 4 and 5, in one possible embodiment, the sliding pin 12 includes a pin 121, a rod 122 and a limiting head 123 disposed on an end of the rod 122, a pin hole 1221 into which the pin 121 is inserted is formed in the rod 122, a mounting hole 13 through which the rod 122 is inserted is formed in the caliper body 1, and after the rod 122 passes through the mounting hole 13, the pin 121 is inserted into the pin hole 1221 and cooperates with the limiting head 123 to limit a position of the sliding pin 12 on the caliper body 1. In the present embodiment, the diameter of the stopper 123 is larger than the diameter of the rod 122. The caliper body 1 is provided with a mounting hole 13 through which the rod 122 passes, and the diameter of the limiting head 123 is larger than that of the mounting hole 13. After the rod 122 passes through the mounting hole, the pin hole 1221 and the limiting head 123 are respectively located at two sides of the mounting hole 13. The pin 121 enters the pin hole 1221 to prevent the rod 122 from being removed from the mounting hole 13, thereby limiting the slide pin 12 on the caliper body 1.

Referring to fig. 4, in one possible embodiment, the second connection portion 32 is located in the middle of the two first connection portions 31, and the second connection portion 32 is connected to the opposite side 11. The arrangement ensures that the friction plate 2 keeps balance in the return process, avoids the friction between the friction plate 2 and the brake disc caused by inclination in the return process, and is beneficial to further reducing the dragging moment.

The utility model provides a vehicle comprising the friction plate return mechanism. The other parts of the vehicle are referred to the prior art, and will not be described herein.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, or alternatives falling within the spirit and principles of the application.

Claims (10)

1. The utility model provides a friction disc return mechanism, is applied to brake disc braking, its characterized in that: including calliper caliper body (1), friction disc (2) and spring leaf (3), calliper caliper body (1) have two opposite sides (11) of arranging respectively the brake disc both sides, every opposite sides (11) are passed through spring leaf (3) are installed friction disc (2), friction disc (2) have towards installation face (21) of opposite sides (11), spring leaf (3) include first connecting portion (31) and second connecting portion (32), first connecting portion (31) are equipped with two and are located respectively the both ends of spring leaf (3), second connecting portion (32) are located two between first connecting portion (31), first connecting portion (31) connect in on installation face (21), second connecting portion (32) connect in on opposite sides (11), spring leaf (3) are in friction disc (2) are to clamp when the direction of brake disc moves produce the opposite force of the direction of movement of friction disc (2).

2. Friction plate return mechanism according to claim 1, characterized in that the friction plate (2) is provided with a first mating hole (22), a sliding pin (12) is connected between the two opposite side surfaces (11), and the sliding pin (12) passes through the first mating hole (22) and is in clearance fit with the first mating hole (22).

3. The friction plate return mechanism according to claim 1, wherein the mounting surface (21) is provided with a limit groove (211) which is obliquely arranged, the first connecting portion (31) is obliquely arranged in the same direction as the limit groove (211), and the first connecting portion (31) is inserted into the limit groove (211) and connected with the mounting surface (21).

4. A friction plate return mechanism according to claim 3, wherein the inclination direction of the limit groove (211) is inclined from bottom to top.

5. A friction plate return mechanism according to claim 3, wherein two limiting grooves (211) are provided, and the two limiting grooves (211) have the same inclination direction and respectively correspond to the two first connecting portions (31).

6. Friction plate return mechanism according to claim 1, characterized in that the spring plate (3) on each friction plate (2) is provided with two plates, the two plates (3) being arranged in parallel.

7. The friction plate return mechanism according to claim 2, further comprising a compression spring (4), the compression spring (4) including a first elastic portion (41) and a second elastic portion (42), the first elastic portion (41) being pressed against the slide pin (12) so that the first elastic portion (41) generates a deformation force in a first direction, the second elastic portion (42) being pressed against the friction plate (2) so that the second elastic portion (42) generates a deformation force in a second direction, the first direction being opposite to the second direction.

8. The friction plate return mechanism according to claim 2, wherein the sliding pin (12) comprises a bolt (121), a rod body (122) and a limiting head (123) arranged on the end portion of the rod body (122), a pin hole (1221) into which the bolt (121) can be inserted is formed in the rod body (122), a mounting hole (13) through which the rod body (122) can pass is formed in the caliper body (1), and after the rod body (122) passes through the mounting hole (13), the bolt (121) is inserted into the pin hole (1221) and is matched with the limiting head (123) to limit the position of the sliding pin (12) on the caliper body (1).

9. Friction plate return mechanism according to claim 1, characterized in that the second connection portion (32) is located in the middle of two of the first connection portions (31).

10. A vehicle comprising a friction plate return mechanism according to any one of claims 1 to 9.