Piston clamp spring

Abstract

The utility model relates to a piston clamp spring, which comprises a clamp spring body and a fastener connected with the clamp spring body, a brake pad is provided with a fitting piece, the fitting piece is connected with the brake pad, the fastener comprises a locking part, the locking part is provided with a notch, the notch rotates and extends towards the inner side of the fastener, the rotation angle exceeds 90 degrees, and a slide way is formed. The matching piece is provided with a locked part matched with the notch, and the locking part is provided with an initial position located outside the matching piece and a locking position which extends into the matching piece and is connected with the locked part on the matching piece. By means of the arrangement, the locking part is manually rotated to rotate to the bottommost end through the sliding way on the locking part, at the moment, the locking part and the locked part on the matching piece form a self-locking structure, the self-locking structure prevents the snap spring body from shaking front, back, left and right, the problem that the snap spring body is loosened is solved, and meanwhile the self-locking structure is easy to disassemble and replace.

Description

Technical Field

[0001] The utility model relates to the technical field of piston retaining springs, in particular to a piston retaining spring. Background Art

[0002] The structure of a car brake pad in the prior art mainly includes a brake pad base plate and a piston retaining spring. A layer of adhesive is applied to the surface of the brake pad base plate, and the brake pad is bonded to the brake friction material through a vulcanization process. At the same time, the brake pad base plate is connected to the prefabricated piston retaining spring through hole by riveting. The claw of the piston retaining spring is connected to the piston cylinder of the car brake caliper body, driving the car brake pad to move, and the car is braked by clamping the brake disc. However, the piston retaining spring and the brake pad base plate are connected by riveting, which is prone to the problem that the piston retaining spring is damaged but not easy to replace. At the same time, the prior art also uses bolt connection to solve the problem that the piston retaining spring is damaged but not easy to replace. However, long-term use of bolt connection will easily cause the piston retaining spring and the brake pad to become loose. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a piston retaining spring. The brake assembly includes a brake pad and a piston retaining spring arranged on the brake pad, the piston retaining spring includes a retaining spring body and a fastener connected to the retaining spring body, the brake pad is provided with a mating piece and the mating piece is connected to the brake pad, the fastener includes a locking portion, the locking portion is provided with a notch, and the notch extends along a rotation toward the inner side of the fastener and the rotation angle exceeds 90° to form a slideway, the mating piece is provided with a locked portion adapted to the notch, the locking portion has an initial position outside the mating piece and a locking position when it is extended into the mating piece and connected to the locked portion on the mating piece.

[0004] Preferably, the fastener comprises a connecting piece, the connecting piece is arranged between the locking portion and the clip body, the clip body is provided with a first through hole, and the connecting piece passes through the first through hole to be connected with the fastener.

[0005] Preferably, the fitting comprises a fixing portion, the fixing portion is connected to the brake pad, and the locked portion is arranged on and connected to the fixing portion.

[0006] Preferably, the locked portion comprises a connecting rod and a buffer elastic member, one end of the buffer elastic member is connected to the fixing portion and the other end is connected to the connecting rod, and the cross section of the connecting rod is consistent with the notch.

[0007] Preferably, the matching piece includes a supporting portion, a second through hole is provided on one side of the fixing portion, the supporting portion is a U-shaped structure and one end thereof passes through the second through hole and is connected to the bottom end of the fixing portion, and the other end is connected to the top end of the fixing portion.

[0008] Preferably, the bending angle of the bending part of the support portion exceeds 180°, and a hook is provided on one end of the support portion connected to the bottom end of the fixing portion, and the hook abuts against the bottom end of the fixing portion.

[0009] The beneficial effects of the utility model are as follows: through the slide on the locking part, the locking part is manually rotated to the bottom end. At this time, the locking part and the locked part on the matching part form a self-locking structure, and the self-locking structure prevents the retaining spring body from shaking back and forth and left and right, avoiding the problem of loosening of the retaining spring body. At the same time, the self-locking structure is easy to disassemble and replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.

[0011] Figure 1 It is an exploded schematic diagram of the utility model in cooperation with a brake pad;

[0012] Figure 2 It is an explosion diagram of the utility model;

[0013] Figure 3 It is a structural schematic diagram of the fastener and the matching piece in the utility model;

[0014] Figure 4 Schematic diagrams of the fastener and the mating member in the utility model in two mating positions, wherein FIG a is a schematic diagram of the fastener and the mating member when the fastener is in the initial position, and FIG b is a schematic diagram of the fastener and the mating member when the fastener is in the locking position;

[0015] Figure 5 It is a schematic diagram of the structure of the fixing part and the supporting part in the utility model from three perspectives, wherein Figure a is a schematic diagram of the fixing part and the supporting part cooperating structure of the top view, Figure b is a schematic diagram of the fixing part and the supporting part cooperating structure of the bottom view, and Figure c is a schematic diagram of the fixing part and the supporting part cooperating structure of the side view. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0017] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0018] The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are used to explain and understand the present invention, but not to limit the scope of protection of the present invention.

[0019] like Figures 1 to 5 As shown, it is an embodiment of the utility model, the brake assembly includes a brake pad 3 and a piston retaining spring arranged on the brake pad 3, the piston retaining spring includes a retaining spring body 1 and a fastener 2 connected to the retaining spring body, the brake pad 3 is provided with a mating piece 4 and the mating piece 4 is connected to the brake pad 3, the fastener 2 includes a locking portion 21, the locking portion 21 is provided with a notch 22, and the notch 22 extends along the inner side of the fastener 2 and the rotation angle exceeds 90° to form a slide 23, the mating piece is provided with a locked portion 42 adapted to the notch 22, the locking portion 21 has an initial position outside the mating piece 4 and a locking position when it is extended into the mating piece 4 and connected to the locked portion 42 on the mating piece 4.

[0020] It can be understood that the notch 22 extends toward the inside of the fastener 2 and rotates more than 90°. When the fastener 2 rotates to the lowest point, the locked portion 42 is locked with the fastener 2 to prevent the piston retaining ring from loosening.

[0021] It can be understood that the problem of the piston retaining ring being damaged but difficult to replace is solved by extending one end of the fastener 2 into the fitting 4 and forming a self-locking structure with the fitting 4 and the other end of the fastener 2 being connected to the retaining ring body 1 to form a fixed end.

[0022] The fastener 2 includes a connecting member 11 , which is disposed between the locking portion 21 and the clip body 1 . The clip body 1 is provided with a first through hole 12 , and the connecting member 11 passes through the first through hole 12 and is connected to the fastener 2 .

[0023] The fitting member 4 includes a fixing portion 41 , the fixing portion 41 is connected to the brake pad 3 , and the locked portion 42 is disposed on the fixing portion 41 and connected to the fixing portion.

[0024] The locked portion 42 includes a connecting rod 421 and a buffer elastic member 422 . One end of the buffer elastic member 422 is connected to the fixing portion 41 and the other end is connected to the connecting rod 421 . The cross section of the connecting rod 421 is consistent with the notch 22 .

[0025] It can be understood that both ends of the connecting rod 421 are provided with buffer elastic members 422 , and the buffer elastic members 422 can reduce the damage of the matching member 4 .

[0026] The mating piece 4 includes a supporting portion 43 . A second through hole 412 is provided on one side of the fixing portion 41 . The supporting portion 43 is a U-shaped structure and one end thereof passes through the second through hole 412 and is connected to the bottom end of the fixing portion 41 , while the other end is connected to the top end of the fixing portion 41 .

[0027] The bending angle of the bending part of the support portion 43 exceeds 180°. A hook 431 is provided on one end of the support portion 43 connected to the bottom end of the fixing portion 41 , and the hook 431 abuts against the bottom end of the fixing portion 41 .

[0028] It can be understood that one end of the support portion 43 passes through the second through hole 412 and is connected to the bottom end of the fixing portion 41 , and the other end is connected to the top end of the fixing portion 41 , and the hook 431 thereof abuts against the bottom end of the fixing portion 41 to enhance the overall stability of the fitting 4 .

[0029] The fixing portion 41 is provided with a third through hole 411 , and the fastener 2 passes through the third through hole 411 to connect with a connecting rod 421 provided on the matching member 4 , and the fastener 2 is locked with the connecting rod 421 .

[0030] A person skilled in the art can understand that all or part of the steps in the above-mentioned embodiment method can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as ROM / RAM, disk, CD-ROM, etc.

[0031] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

[0032] It should be noted that the embodiments of the present invention can be implemented by hardware, software, or a combination of software and hardware. The hardware portion can be implemented using dedicated logic; the software portion can be stored in a memory and executed by an appropriate instruction execution system, such as a microprocessor or dedicated design hardware. Those skilled in the art will appreciate that the above-mentioned devices and methods can be implemented using computer executable instructions and / or contained in a processor control code, such as providing such code on a programmable memory or a data carrier such as an optical or electronic signal carrier.

[0033] In addition, although the operation of the utility model method is described in a specific order in the accompanying drawings, this does not require or imply that these operations must be performed in this specific order, or that all the operations shown must be performed to achieve the desired results. On the contrary, the steps depicted in the flow chart can change the order of execution. Additionally or alternatively, some steps can be omitted, multiple steps can be combined into one step for execution, and / or one step can be decomposed into multiple steps for execution. It should also be noted that the features and functions of two or more devices according to the utility model can be embodied in one device. Conversely, the features and functions of a device described above can be further divided into being embodied by multiple devices.

[0034] Although the present invention has been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the specific embodiments disclosed. The present invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A piston retaining spring, wherein the brake assembly comprises a brake pad (3) and a piston retaining spring arranged on the brake pad (3), characterized in that: The piston retaining ring comprises a retaining ring body (1) and a fastener (2) connected to the retaining ring body (1); a matching piece (4) is provided on the brake pad (3) and the matching piece (4) is connected to the brake pad (3); the fastener (2) comprises a locking portion (21); a notch (22) is provided on the locking portion (21); the notch (22) extends along a rotational direction toward the inside of the fastener (2) and the rotation angle exceeds 90° to form a slideway (23); the matching piece is provided with a locked portion (42) matched with the notch (22); the locking portion (21) has an initial position located outside the matching piece (4) and a locking position when it is located inside the matching piece (4) and connected to the locked portion (42) on the matching piece (4).

2. The piston retaining spring according to claim 1, characterized in that: The fastener (2) comprises a connecting piece (11), wherein the connecting piece (11) is arranged between a locking portion (21) and a clip body (1), wherein a first through hole (12) is provided on the clip body (1), and the connecting piece (11) passes through the first through hole (12) to be connected to the fastener (2).

3. The piston retaining spring according to claim 1, characterized in that: The matching piece (4) comprises a fixing portion (41), the fixing portion (41) being connected to the brake pad (3), and the locked portion (42) being arranged on the fixing portion (41) and connected to the fixing portion.

4. The piston retaining spring according to claim 3, characterized in that: The locked portion (42) comprises a connecting rod (421) and a buffer elastic member (422), one end of the buffer elastic member (422) is connected to the fixing portion (41) and the other end is connected to the connecting rod (421), and the cross section of the connecting rod (421) is consistent with the notch (22).

5. The piston retaining spring according to claim 3, characterized in that: The matching piece (4) comprises a supporting portion (43), a second through hole (412) being provided on one side of the fixing portion (41), the supporting portion (43) being a U-shaped structure, one end of which passes through the second through hole (412) and is connected to the bottom end of the fixing portion (41), and the other end of which is connected to the top end of the fixing portion (41).

6. The piston retaining spring according to claim 5, characterized in that: The bending angle of the bending portion of the support portion (43) exceeds 180°, and a hook (431) is provided on one end of the support portion (43) connected to the bottom end of the fixing portion (41), and the hook (431) abuts against the bottom end of the fixing portion (41).

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