A brake disc return mechanism and a brake

Abstract

The present invention relates to the field of brake disc return, and discloses a brake disc return mechanism. Four spring frames are symmetrically arranged on both sides of the axis where the intersection point is located, and the spring frames on both sides are pairwise formed into a return group; the two spring frames of the return group are designed in an "X" shape, the two spring frames have a second intersection point, and the two spring frames are located on both sides of the plane where the second intersection point is located; the position of the second intersection point changes with the deformation of the spring frame; the second intersection point, the first connection point and the part of the spring frame between the two points form a main return area, and the two spring frame parts on the other side of the second intersection point are designed in a flared shape to form a force application area; a small spring body with elastic recovery ability is supported in the main return area, and both ends of the small spring body are respectively supported on the spring frames in the main return area; the two ends of the spring frames in the force application area are respectively used for fixedly connecting with the inner brake disc and the outer brake disc. This return mechanism has the advantages of stable return and reliable return.

Description

Technical Field

[0001] The present invention relates to the field of brakes, and particularly to a brake disc return mechanism and a brake. Background Art

[0002] Chinese Patent Application CN201980084724.X discloses a pad return spring for a disc brake caliper body. By using the structure of a combination of elastic elements and designing the structure of the spring body itself, the spring body can reduce the volume of the spring without reducing the design load during use, and avoid the risk of exceeding the spring yield limit during the pad assembly or replacement operation.

[0003] However, the structure of this kind of spring body is too complex, and its volume is not significantly reduced. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0005] A brake disc return mechanism at least includes four spring frames with elastic recovery ability. The four spring frames are connected at a first connection point, and the four spring frames are symmetrically arranged on both sides of the axis where the intersection point is located. The spring frames on both sides are pairwise grouped into a return group; the two spring frames in the return group are designed in an "X" shape, the two spring frames have a second intersection point, and the two spring frames are located on both sides of the plane where the second intersection point is located; the position of the second intersection point changes with the deformation of the spring frame; the second intersection point, the first connection point, and the part of the spring frame between the two points form a main return area, and the two spring frame parts on the other side of the second intersection point are designed in a flared shape to form a force application area; a small spring body with elastic recovery ability is supported in the main return area, and the two ends of the small spring body are respectively supported on the spring frames in the main return area; the two end parts of the spring frames in the force application area are respectively used for fixedly connecting with the inner brake disc and the outer brake disc. A combined spring body structure is creatively adopted. The small spring body can play a role in supporting the entire return force, and because its stiffness coefficient is relatively large, its fatigue resistance is good and it is not easy to have failure problems. At the same time, small spring bodies with different stiffness coefficients can be selected according to different requirements.

[0006] Preferably, the spring frame parts in the main return area are respectively defined as a first support spring body and a second support spring body; the two ends of the small spring body are respectively supported by the first support spring body and the second support spring body. During braking, the first support spring body and the second support spring body are pressed on the small spring body under the action of an external force, and the small spring body is deformed by the force to accumulate elastic potential energy.

[0007] Preferably, the small spring body is a sheet spring shaped like a "C" as a whole. Clasps are provided at the edge parts at both ends of the small spring body, and the clasps cooperate with the first support spring body and the second support spring body respectively. The side of the first support spring body that cooperates with the clasp is the inner side, and the side of the second support spring body that cooperates with the clasp is the outer side. In this solution, the small spring body and the spring frame are detachably connected, and this installation structure is a snap connection. The parts on both sides of the clasp can play a role in limiting the spring frame, so as to achieve the purpose of locking, and the small spring body will not fall off.

[0008] Preferably, mounting holes are designed at the edge parts on one side of the two clasps. Fixed holes corresponding to the mounting holes are provided on the first support spring body and the second support spring body. The first support spring body and the second support spring body are fixedly connected to the small spring body through a connecting piece passing through the mounting holes and the fixed holes.

[0009] Preferably, the mounting holes are formed by strip-shaped mounting sleeves rolled out from the edge parts.

[0010] Preferably, the two spring frame parts in the force application area are defined as the first force application part and the second force application part. Force application strips are provided at the ends of the first force application part and the second force application part. The force application strips are used for fixedly connecting or movably connecting with the brake disc, and the force application strips are perpendicular to the first force application part and the second force application part.

[0011] Preferably, the stiffness coefficient of the small spring body is at least twice that of the large spring body.

[0012] Preferably, the four spring frames are formed by two spring frame groups. The spring frame group includes an upper spring frame group and a lower spring frame group. The middle connection point of the upper spring frame group and the lower spring frame group is the first connection point. The upper spring frame group includes 2 spring frames, and the lower spring frame group includes two spring frames. The two spring frames of the upper spring frame assembly and the two spring frames of the lower spring frame group are both located on both sides of the first connection point, and the two spring frames of the upper spring frame group are correspondingly located above the two spring frames of the lower spring frame group.

[0013] Preferably, semi-circular connecting sleeves are provided in the middle of the upper spring frame group and the lower spring frame group. The spring frames connected to them are respectively connected to both sides of the connecting sleeve. The connecting sleeves of the upper spring frame group and the lower spring frame group are spliced and assembled into a complete sleeve-shaped structure. A locking sleeve is also included, and the locking sleeve is sleeved on the connecting sleeve to fixedly connect the two connecting sleeves.

[0014] Preferably, a connecting pin shaft is further included, and the connecting pin shaft is inserted into the sleeve-shaped structure formed by the connecting sleeves; a fixed seat is provided at one end of the connecting pin shaft.

[0015] A brake is equipped with the above-mentioned brake disc return mechanism.

[0016] Through the above technical solutions, the present invention has the following technical effects:

[0017] This solution designs a flat brake disc return mechanism, which is formed by combining two kinds of spring bodies with different stiffness coefficients. The small spring body does not occupy extra space and serves to bear most of the acting forces, thus greatly reducing the risk of spring frame fatigue. Secondly, this kind of spring body can also quickly return the friction plate after the friction plate wears, avoiding the phenomenon of return jamming caused by spring frame fatigue. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the whole device.

[0019] Figure 2 is Figure 1 an enlarged view of

[0020] Figure 3 is Figure 1 an enlarged view of

[0021] Figure 4 It is a schematic structural diagram of the spring frame group.

[0022] Figure 5 It is a schematic structural diagram of the small spring body.

[0023] The reference numerals in the drawings are for the following technical names:

[0024] 1 - spring frame, 2 - first connection point, 3 - return spring group, 4 - second intersection point, 5 - main return area, 6 - force application area, 7 - small spring body, 8 - first support spring body, 9 - second support spring body, 10 - rib, 11 - bayonet, 12 - mounting hole, 13 - fixing hole, 14 - mounting sleeve, 15 - first force application part, 16 - second force application part, 17 - force application strip, 18 - upper spring frame group, 19 - lower spring frame group, 20 - connecting sleeve, 21 - locking sleeve, 22 - connecting pin shaft, 23 - fixing seat. SPECIFIC EMBODIMENTS

[0025] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0026] Embodiment 1

[0027] A brake disc return mechanism includes at least four spring frames 1 with elastic recovery ability. The spring frame 1 has a strip structure, and the four spring frames 1 are connected at the first connection point 2, where the connection at the first connection point 2 means that the four spring frames 1 intersect at a point. The four spring frames 1 can be four separate structures, or a combined structure or even an integral structure.

[0028] Four spring frames 1 are symmetrically arranged on both sides of the axis where the intersection point is located. The spring frames 1 on both sides are pairwise combined to form a rebound group 3. One group of rebound groups 3 supports the left side of the inner brake disc and the outer brake disc, and the other group of rebound groups 3 supports the right side of the inner brake disc and the outer brake disc. The two spring frames 1 of the rebound group 3 are designed in an "X" shape, and the two spring frames 1 have a second intersection point 4. The two spring frames 1 are arranged in a front-back overlapping manner. The two spring frames 1 are located on both sides of the plane where the second intersection point 4 is located; the second intersection point 4 is the contact point of the two spring frames 1. The position of the second intersection point 4 changes with the deformation of the spring frame 1; the second intersection point 4, the first connection point 2, and the part of the spring frame 1 between the two points form the main rebound area 5, where the main rebound area 5 is spindle-shaped, that is, wide in the middle and narrow at both ends.

[0029] The two parts of the two spring frames 1 on the other side of the second intersection point 4 are designed in a flared shape to form a force application area 6; because of the intersection point, the force application area 6 can also be said to be in a "herringbone" shape. A small spring body 7 with elastic recovery ability is supported in the main rebound area 5. The two ends of the small spring body 7 are respectively supported on the spring frame 1 of the main rebound area 5; the two ends of the spring frame 1 in the force application area 6 are respectively used for fixed connection with the inner brake disc and the outer brake disc. In this embodiment, the force application area 6. Creatively adopts a combined spring body structure, and the small spring body 7 can play a role in supporting the entire return force. Moreover, due to its relatively large stiffness coefficient, its fatigue resistance is good and it is not easy to have failure problems. At the same time, small spring bodies 7 with different stiffness coefficients can be selected according to different needs. Therefore, during the process of supporting and accumulating elastic potential energy, the deformation of the spring frame 1 is small, and the small spring body 7 bears a large return spring force. Avoid premature fatigue of the spring frame 1, which is more specific when the friction plate wears in the later stage.

[0030] In this embodiment, the parts of the spring frame 1 in the main rebound area 5 are respectively defined as the first support spring body 8 and the second support spring body 9; the two ends of the small spring body 7 are respectively supported by the first support spring body 8 and the second support spring body 9. During braking, the first support spring body 8 and the second support spring body 9 are pressed on the small spring body 7 under the action of an external force, and the small spring body 7 is deformed by the force to accumulate elastic potential energy.

[0031] In this embodiment, the small spring body 7 is a sheet spring in an overall "C" shape, and two small spring bodies 7 are arranged back to back with the openings facing both sides. Clasps 11 are provided at the edge parts 10 at both ends of the small spring body 7, and the clasps 11 cooperate with the first support spring body 8 and the second support spring body 9 respectively. The side of the first support spring body 8 that cooperates with the clasp 11 is the inner side, and the side of the second support spring body 9 that cooperates with the clasp 11 is the outer side. In this solution, the small spring body 7 and the spring frame 1 are detachably connected, and this installation structure is a snap connection. The parts on both sides of the clasp 11 can play a role in limiting the spring frame 1, so as to achieve the purpose of locking, and the small spring body 7 will not fall off.

[0032] In this embodiment, mounting holes 12 are designed on the edge parts 10 on one side of the two bayonets 11. Fixing holes 13 corresponding to the mounting holes 12 are provided on the first support spring body 8 and the second support spring body 9. The first support spring body 8 and the second support spring body 9 are fixedly connected to the small spring body 7 through a connecting piece passing through the mounting holes 12 and the fixing holes 13.

[0033] In this embodiment, the mounting holes are formed by strip-shaped mounting sleeves 14 rolled out from the edge parts 10. Two spring holders 1 of the force application area 6 are defined as the first force application part 15 and the second force application part 16. Force application strips 17 are provided at the ends of the first force application part 15 and the second force application part 16. The force application strips 17 are used for fixedly connecting or movably connecting with the brake disc. The force application strips 17 are perpendicular to the first force application part 15 and the second force application part 16. The force application strips 17 are used for connecting with the back plate of the brake disc.

[0034] In this embodiment, the stiffness coefficient of the small spring body 7 is at least twice that of the large spring body, because a larger stiffness coefficient can meet the ability to bear a large spring force while only undergoing small deformation.

[0035] In this embodiment, the four spring holders 1 are formed by two groups of spring holders 1. The spring holder group includes an upper spring holder group 18 and a lower spring holder group 19. The middle connection point of the upper spring holder group 18 and the lower spring holder group 19 is the first connection point 2. The upper spring holder group 18 includes 2 spring holders 1, and the lower spring holder group 19 includes two spring holders 1. The two spring holders 1 of the upper spring holder group 18 and the two spring holders 1 of the lower spring holder group 19 are both located on both sides of the first connection point 2. The two spring holders 1 of the upper spring holder group 18 are correspondingly located above the two spring holders 1 of the lower spring holder group 19.

[0036] In this embodiment, semi-circular connection sleeves 20 are provided in the middle of both the upper spring holder group 18 and the lower spring holder group 19. The spring holders 1 connected thereto are respectively connected to both sides of the connection sleeve 20. The connection sleeves 20 of the upper spring holder group 18 and the lower spring holder group 19 are spliced and assembled into a complete sleeve-shaped structure. A lock sleeve 21 is further included. The lock sleeve 21 is sleeved on the connection sleeve 20 to fixedly connect the two connection sleeves 20.

[0037] Preferably, a connecting pin shaft 22 is further included. The connecting pin shaft 22 is inserted into the sleeve-shaped structure formed by the connection sleeves 20. A fixing seat 23 is provided at one end of the connecting pin shaft 22.

[0038] This solution designs a flat brake disc return mechanism, which is formed by combining two spring bodies with different stiffness coefficients. Among them, the small spring body 7 does not occupy extra space. The small spring body 7 serves the purpose of bearing most of the acting forces, thereby greatly reducing the risk of fatigue of the spring holder 1. Secondly, this kind of spring body can also serve the purpose of quickly returning the friction plate after the friction plate wears, avoiding the phenomenon of return jamming caused by fatigue of the spring holder 1.

[0039] Embodiment 2

[0040] This embodiment discloses a brake, which is equipped with a brake disc return mechanism of Embodiment 1.

[0041] Embodiment 3

[0042] The difference between this embodiment and Embodiment 1 lies in that the four spring brackets 1 are of an integral structure.

Claims

1. A brake disc return mechanism, characterized in that: There are at least four spring frames (1) with elastic recovery ability. The four spring frames (1) are connected at the first connection point (2), and the four spring frames (1) are symmetrically arranged on both sides of the axis where the intersection point is located. The spring frames (1) on both sides are pairwise formed into a rebound group (3); the two spring frames (1) of the rebound group (3) are designed in an "X" shape, the two spring frames (1) have a second intersection point (4), and the two spring frames (1) are located on both sides of the plane where the second intersection point (4) is located; the position of the second intersection point (4) changes with the deformation of the spring frame (1); the second intersection point (4), the first connection point (2), and the part of the spring frame (1) between the two points form the main rebound area (5), and the parts of the two spring frames (1) on the other side of the second intersection point (4) are designed in a flared shape to form a force application area (6); a small spring body (7) with elastic recovery ability is supported in the main rebound area (5), and both ends of the small spring body (7) are respectively supported on the spring frames (1) of the main rebound area (5); the ends of the two spring frames (1) in the force application area (6) are respectively used for fixedly connecting with the inner brake disc and the outer brake disc; the parts of the spring frames (1) in the main rebound area (5) are respectively defined as the first support spring body (8) and the second support spring body (9); both ends of the small spring body (7) are respectively supported by the first support spring body (8) and the second support spring body (9). During braking, the first support spring body (8) and the second support spring body (9) are pressed on the small spring body (7) under the action of an external force, and the small spring body (7) is deformed by force to accumulate elastic potential energy; the four spring frames (1) are formed by two groups of spring frames (1). The spring frame group includes an upper spring frame group (18) and a lower spring frame group (19). The middle connection point of the upper spring frame group (18) and the lower spring frame group (19) is the first connection point (2). The upper spring frame group (18) includes 2 spring frames (1), and the lower spring frame group (19) includes two spring frames (1). The two spring frames (1) of the upper spring frame group (18) and the two spring frames (1) of the lower spring frame group (19) are both located on both sides of the first connection point (2), and the two spring frames (1) of the upper spring frame group (18) are correspondingly located above the two spring frames (1) of the lower spring frame group (19).

2. The return mechanism of a brake disc according to claim 1, wherein: The small spring body (7) is a sheet-shaped spring piece with an overall "C" shape. Clasps (11) are provided at the edge parts (10) at both ends of the small spring body (7). The clasps (11) are respectively matched with the first support spring body (8) and the second support spring body (9). The side surface of the first support spring body (8) that is matched with the clasp (11) is the inner side surface, and the side surface of the second support spring body (9) that is matched with the clasp (11) is the outer side surface.

3. The return mechanism of a brake disc according to claim 2, wherein: Mounting holes (12) are designed on the edge parts (10) on one side of the two clasps (11). Corresponding fixing holes (13) are provided on the first support spring body (8) and the second support spring body (9). The first support spring body (8) and the second support spring body (9) are fixedly connected with the small spring body (7) through a connecting piece passing through the mounting hole (12) and the fixing hole (13).

4. A brake disc return mechanism according to claim 3, characterized in that: The mounting hole is formed by a strip-shaped mounting sleeve (14) rolled out from the edge part (10).

5. The return mechanism of a brake disc according to claim 2, characterized in that: The two spring support (1) parts of the force application area (6) are defined as the first force application part (15) and the second force application part (16). Force application bars (17) are arranged at the ends of the first force application part (15) and the second force application part (16). The force application bars (17) are used for fixedly connecting or movably connecting with the brake disc. The force application bars (17) are perpendicular to the first force application part (15) and the second force application part (16). The stiffness coefficient of the small spring body (7) is at least twice that of the large spring body.

6. The return mechanism of a brake disc according to claim 2, characterized in that: Semicircular connecting sleeves (20) are arranged in the middle of the upper spring support group (18) and the lower spring support group (19). The spring supports (1) connected thereto are respectively connected to both sides of the connecting sleeve (20). The connecting sleeves (20) of the upper spring support group (18) and the lower spring support group (19) are spliced and assembled into a complete sleeve-shaped structure. A lock sleeve (21) is further included. The lock sleeve (21) is sleeved on the connecting sleeve (20) to fixedly connect the two connecting sleeves (20).

7. A brake disc return mechanism according to claim 6, characterized in that: A connecting pin shaft (22) is further included. The connecting pin shaft (22) is inserted into the sleeve-shaped structure formed by the connecting sleeves (20). A fixed seat (23) is arranged at one end of the connecting pin shaft (22).

8. Brake, characterized in that: Assembled with a brake disc return mechanism according to any one of claims 1 to 7.

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