Brake apparatus for vehicle

Abstract

An invention relating to a vehicle brake device is disclosed. The disclosed vehicle brake device is characterized by comprising: a torque member portion surrounding a brake disc; a pair of pad liner portions mounted facing each other on the torque member portion; a pair of brake pad portions each disposed on the pair of pad liner portions and movable along the pad liner portions; and a plurality of return portions that contact the torque member portion, penetrate the pair of brake pad portions each and are restrained to the brake pad portions, and return the brake pad portions to their original position by means of an elastic restoring force.

Description

Technology Field

[0001] The present invention relates to a vehicle brake device, and more specifically, to a vehicle brake device in which the brake pad portion can be easily restored to its original state, durability is improved, and noise is reduced during operation. Background Technology

[0002] Generally, the caliper of a brake device for braking comes into close contact with the brake disc when the pedal is pressed, providing braking force, and consists of multiple parts.

[0003] Among brake calipers, the pad liner is mounted on the torque member and is equipped with a return section that restores the brake pad to its original position using elastic force. However, as durability decreases due to repeated operation, the return section of the pad liner undergoes plastic deformation, and there is a problem that the brake pad surface area may be lost due to the shape protruding from the brake pad. In addition, a gap occurs between the brake pad and the pad liner, causing the brake pad to shift to one side and generating noise during operation. Therefore, there is a need to improve this.

[0004] The background technology of the present invention is disclosed in Korean Published Patent Application No. 10-2009-0078675 (published July 20, 2009, Title of Invention: Brake Device for Vehicles). The problem to be solved

[0005] The present invention was created out of the aforementioned necessity, and aims to provide a vehicle brake device that not only allows the brake pad portion to be easily restored to its original state and improves durability but also reduces noise during operation. means of solving the problem

[0007] To achieve the above-mentioned objective, the vehicle brake device of the present invention comprises: a torque member portion surrounding a brake disc; a pair of pad liner portions mounted facing each other on the torque member portion; a pair of brake pad portions each disposed on the pair of pad liner portions and movable along the pad liner portions; and a plurality of return portions that contact the torque member portion, penetrate the pair of brake pad portions each and are constrained to the brake pad portions, and return the brake pad portions to their original position by means of elastic restoring force.

[0008] In addition, a locking hole is formed in the brake pad portion, and the return portion passes through the locking hole portion and is engaged with the brake pad portion.

[0009] Additionally, the return portion is characterized by comprising: a pair of return contact portions that contact the torque member portion; a pair of return spring portions each connected to the pair of return contact portions; a return connection portion connecting adjacent return spring portions; and a return catch portion that is formed to extend and bend to one side from the return connection portion, passes through the catch hole portion, and engages with the brake pad portion.

[0010] In addition, the above-mentioned return spring part is characterized by having an elastic inducing part formed therein to induce elastic deformation.

[0011] Additionally, the return catch portion is characterized by comprising: a return catch body that is extended and bent to one side from the return connection portion and passes through the catch hole portion; and a return catch block that is extended and bent to one side from the return catch body and engages with the brake pad portion.

[0012] In addition, the return catch block is characterized by having a width smaller than the size of the catch hole, and the return catch body is formed to be inclined such that the angle of inclination gradually increases as it moves away from the return connection part.

[0013] In addition, the return contact portion is formed to be bent to one side from the return spring portion and is characterized by being in contact with the return spring portion.

[0014] Additionally, the return portion is characterized by comprising: a pair of return catch portions that pass through the catch hole portion and engage with the brake pad portion; a pair of return connecting portions that are bent and extended to face the return catch portions from the return catch portions; a pair of return contact portions that are bent and extended to one side from the return connecting portions and contact the torque member portion; and a return spring portion that is connected to an adjacent return contact portion and is formed in a curved shape.

[0015] Additionally, the return catch portion is characterized by comprising: a return catch body connected to the return connection portion and passing through the catch hole portion; and a return catch block formed to be bent and extended to one side from the return catch body and contacting the torque member portion.

[0016] In addition, the return portion is characterized by comprising: a pair of return catch portions that pass through the catch hole portion and engage with the brake pad portion; a pair of return spring portions that are formed to extend and bend to one side from the pair of return catch portions; and a return contact portion that connects the pair of return spring portions and contacts the torque member portion.

[0017] Additionally, the return catch portion is characterized by comprising: a return catch body connected to the return connection portion and passing through the catch hole portion; and a return catch block formed to be bent and extended from the return catch body to face the return catch body and contacting the torque member portion.

[0018] In addition, the return contact portion is characterized by comprising: a pair of first return contact portions each connected to a pair of return spring portions and in contact with the torque member portion; and a second return contact portion connecting the pair of first return contact portions and in contact with the torque member portion.

[0019] In addition, the brake pad portion is characterized by including: a back plate portion in which the locking hole portion is formed; and a friction member connected to the back plate portion and in contact with the brake disc.

[0020] In addition, the backplate portion is characterized by comprising: a backplate body to which the friction member is coupled; and a pair of pad protrusions each formed protruding from both sides of the backplate body and having the locking hole portion formed therein. Effects of the invention

[0021] In the vehicle brake device according to the present invention, a return part separate from the pad liner part penetrates the brake pad part and is constrained to the brake pad part. Unlike conventional technology in which the return part is integrally formed with the pad liner, this prevents deformation of the pad liner part due to repeated return operation and improves the durability of the pad liner part. Furthermore, by reducing the movement of the pad liner part, it has the effect of preventing noise from being generated during the operation of the brake pad part. Brief explanation of the drawing

[0022] FIG. 1 is a perspective view showing a vehicle brake device according to a first embodiment of the present invention. Figure 2 is an enlarged view of part A of Figure 1. Figure 3 is a cross-sectional view of AA' of Figure 2. FIG. 4 is a front view of a vehicle brake device according to a first embodiment of the present invention. Figure 5 is an enlarged view of part B of Figure 3. FIG. 6 is an exploded perspective view of a vehicle brake device according to the first embodiment of the present invention. Figure 7 is an enlarged view of the main part of Figure 6. FIG. 8 is a drawing showing the state in which the return part is disassembled from the brake pad part of a vehicle brake device according to the first embodiment of the present invention. FIG. 9 is a perspective view showing a return section of a vehicle brake device according to a first embodiment of the present invention. FIG. 10 is a plan view of a vehicle brake device according to a first embodiment of the present invention. FIG. 11 is an operation diagram of a vehicle brake device according to the first embodiment of the present invention. FIG. 12 is a perspective view of a vehicle brake device according to a second embodiment of the present invention. FIG. 13 is a drawing showing the state in which the return part is disassembled from the brake pad part of a vehicle brake device according to the second embodiment of the present invention. FIG. 14 is a perspective view showing a return section of a vehicle brake device according to a second embodiment of the present invention. FIG. 15 is a perspective view of a vehicle brake device according to a third embodiment of the present invention. FIG. 16 is a drawing showing the state in which the return part is disassembled from the brake pad part of a vehicle brake device according to the third embodiment of the present invention. FIG. 17 is a perspective view showing a return section of a vehicle brake device according to a third embodiment of the present invention. Specific details for implementing the invention

[0023] Hereinafter, a vehicle brake device according to an embodiment of the present invention will be described with reference to the attached drawings.

[0024] In this process, the thickness of lines or the size of components depicted in the drawings may be exaggerated for the sake of clarity and convenience of explanation. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intent or convention of the user or operator. Therefore, the definitions of these terms should be based on the content throughout this specification.

[0025] FIG. 1 is a perspective view showing a vehicle brake device according to a first embodiment of the present invention, FIG. 2 is an enlarged view of part A of FIG. 1, FIG. 3 is a cross-sectional view of AA' of FIG. 2, FIG. 4 is a front view of a vehicle brake device according to a first embodiment of the present invention, FIG. 5 is an enlarged view of part B of FIG. 3, FIG. 6 is an exploded perspective view of a vehicle brake device according to a first embodiment of the present invention, FIG. 7 is an enlarged view of a key part of FIG. 6, FIG. 8 is a diagram showing the state in which the return part is disassembled from the brake pad part of a vehicle brake device according to a first embodiment of the present invention, FIG. 9 is a perspective view showing the return part of a vehicle brake device according to a first embodiment of the present invention, FIG. 10 is a plan view of a vehicle brake device according to a first embodiment of the present invention, and FIG. 11 is an operation diagram of a vehicle brake device according to a first embodiment of the present invention.

[0026] Referring to FIGS. 1 to 11, a vehicle brake device (1) according to the first embodiment of the present invention includes a torque member (100), a pad liner (200), a pair of brake pads (300), and a plurality of return members (400). The torque member (100) surrounds a brake disc (10), and a pair of pad liners (200), described later, are mounted so as to be positioned on both sides of the brake disc (10).

[0027] A pair of pad liner sections (200) guide the movement of a pair of brake pad sections (300) described later and are mounted facing each other on a torque member section (100). Specifically, when an external force is applied to the brake pad section (300), the brake pad section (300) moves on the pad liner section (200) toward the brake disc (10). Conversely, when the external force applied to the brake pad section (300) is released, the brake pad section (300) moves on the pad liner section (200) toward the opposite side of the brake disc (10).

[0028] A pair of brake pad sections (300) are placed on the pad liner section (200) and are movable along the pad liner section (200). A pair of brake pad sections (300) are placed on each side of the brake disc (10), and when an external force is applied, they move on the pad liner section (200) toward the brake disc (10) and come into close contact with the brake disc (10).

[0029] A plurality of return sections (400) are in contact with the torque member section (100), penetrate a pair of brake pad sections (300) respectively, are restrained by the brake pad sections (300), and return the brake pad sections (300) to their original position by elastic restoring force. A locking hole section (312a) is formed in the brake pad section (300). A locking hole section (312a) is formed in each of the pair of pad protrusions (312) of the brake pad section (300).

[0030] The return portion (400) passes through the locking hole portion (312a) and engages with the brake pad portion (300). As a result, the return portion (400) passes through the locking hole portion (312a) of the pad projection (312) and engages with the pad projection (312).

[0031] The return section (400) includes a pair of return contact sections (410), a pair of return spring sections (420), a return connection section (430), and a return locking section (440). A pair of return contact sections (410) are in contact with the torque member section (100). The return contact sections (410) are formed to be bent to one side from the return spring section (420) described later, and are in contact with the torque member section (100). The return contact sections (410) are in contact with the torque member section (100) so that the return section (400) can be supported by the torque member section (100).

[0032] A pair of return spring sections (420) are each connected to a pair of return contact sections (410). The return spring sections (420) are elastically deformed when the brake pad section (300) moves, and then restored to their original state by elastic restoring force, thereby allowing the brake pad section (300) to be positioned back to its original position.

[0033] An elastic guide portion (421) that induces elastic deformation is formed in the return spring portion (420). Multiple elastic guide portions (421) may be formed spaced apart in the return spring portion (420) in the shape of holes. As a result, when the return spring portion (420) undergoes elastic deformation, the return spring portion (420) can easily undergo elastic deformation, thereby increasing the elastic restoring force of the return spring portion (420).

[0034] The return connection part (430) connects adjacent return spring parts (420). A pair of return spring parts (420) are integrally combined on both sides of the return spring part (420). At this time, the pair of return spring parts (420) are formed rounded on both sides of the return connection part (430), are symmetrical to each other, and are each connected to a pair of return contact parts (410).

[0035] The return catch portion (440) is formed to extend and bend to one side from the return connection portion (430) and passes through the catch hole portion (312a) to engage with the brake pad portion (300). The return catch portion (440) includes a return catch body (441) and a return catch block (442). The return catch body (441) is formed to extend and bend to one side from the return connection portion (430) and passes through the catch hole portion (312a).

[0036] The return catch block (442) is formed to extend and bend to one side from the return catch body (441) and engages with the brake pad portion (300). The return catch block (442) is formed to extend and bend to one side from the return catch body (441) so as to face the brake pad portion (300). The width of the return catch block (442) may be smaller than the width of the catch hole portion (312a). At this time, the return catch body (441) may be formed to be inclined such that the angle of inclination (θ) becomes increasingly larger as it moves further away from the return connection portion (430). As a result, the return catch block (442) may be prevented from detaching from the catch hole portion (312a) of the brake pad portion (300) when the brake pad portion (300) moves. That is, when the brake pad part (300) moves, the return part (400) can be prevented from detaching from the brake pad part (300).

[0037] The brake pad portion (300) includes a back plate portion (310) and a friction member (320). A locking hole portion (312a) is formed in the back plate portion (310). The back plate portion (310) includes a back plate body (311) and a pair of pad protrusions (312). A friction member (320) is coupled to the back plate body (311). A pair of pad protrusions (312) are formed protruding from each side of the back plate body (311), and a locking hole portion (312a) is formed.

[0038] The friction member (320) is connected to the backplate portion (310) and contacts the brake disc (10). The friction member (320) is made of an elastic material and is coupled to the backplate body (311) of the backplate portion (310).

[0039] Hereinafter, with reference to FIG. 11, we will examine the operation and effects of a vehicle brake device according to the first embodiment of the present invention.

[0040] When the driver operates the brake pedal (not shown), the piston (not shown) presses the brake pad portion (300) toward the brake disc (10) by hydraulic pressure. In this way, braking force is generated as the brake pad portion (300) comes into close contact with and frictionally rubs against the brake disc (10). At this time, the return portion (400) mounted on the brake pad portion (300) undergoes elastic deformation.

[0041] Specifically, when an external force is applied to the brake pad portion (300), as the brake pad portion (300) moves toward the brake disc (10), the return spring portion (420) of the return portion (400), which is constrained by the pad projection (312) of the back plate portion (310), undergoes elastic deformation (see FIG. 11(a)).

[0042] Subsequently, when the driver does not operate the brake pedal upon release of braking, the piston is released from pressing the brake pad portion (300). At this time, the return spring portion (420) of the return portion (400) provides an elastic restoring force to the brake pad portion (300) so that the brake pad portion (300) is sufficiently separated from the brake disc (10).

[0043] Specifically, when the external force applied to the brake pad portion (300) is released, the return portion (400) is restored to its original state by the elastic restoring force of the return spring portion (420) of the return portion (400), and the brake pad portion (300) is moved to the opposite side of the brake disc (10) and separated from the brake disc (10) (see FIG. 11(b)).

[0044] In the vehicle brake device (1) according to the present invention, a return part (400) separate from the pad liner part (200) penetrates the brake pad part (300) and is constrained to the brake pad part (300), thereby preventing deformation of the pad liner part (200) by the return operation of the return part (400). In addition, as the movement of the pad liner part (200) is reduced, noise can be prevented during the operation of the brake pad part (300).

[0045] FIG. 12 is a perspective view of a vehicle brake device according to a second embodiment of the present invention, FIG. 13 is a diagram showing a state in which a return part is disassembled from a brake pad part of a vehicle brake device according to a second embodiment of the present invention, and FIG. 14 is a perspective view showing a return part of a vehicle brake device according to a second embodiment of the present invention.

[0046] Hereinafter, a vehicle brake device according to a second embodiment of the present invention will be described. In this case, specific descriptions of the contents of the second embodiment that are identical to those of the first embodiment will be omitted.

[0047] Referring to FIGS. 12 to 14, the return section (400) of the vehicle brake device (2) includes a pair of return locking sections (440), a pair of return connecting sections (430), a pair of return contact sections (410), and a return spring section (420).

[0048] A pair of return catch portions (440) pass through the catch hole portion (312a) and catch on the brake pad portion (300). An adjacent return catch portion (440) can be fitted into the catch hole portion (312a) by means of elastic restoring force.

[0049] The return locking portion (440) includes a return locking body (441) and a return locking block (442). The return locking body (441) is connected to the return connection portion (430) and passes through the locking hole portion (312a). The return locking block (442) is formed to be extended and bent to one side from the return locking body (441) and contacts the torque member portion (100). At this time, the width of the adjacent return locking block (442) may be larger than the size of the locking hole portion (312a).

[0050] The return connection part (430) is formed to be extended and bent so as to face the return catch part (440) at the return catch part (440). The return connection part (430) can be arranged parallel to the return catch part (440).

[0051] A pair of return contact portions (410) are formed to be extended and bent to one side from the return connection portion (430) and contact the torque member portion (100). The return contact portions (410) contact the torque member portion (100) so that the return portion (400) can be supported by the torque member portion (100).

[0052] The return spring portion (420) is connected to an adjacent return contact portion (410) and is formed in a curved shape. The return spring portion (420) elastically deforms when the brake pad portion (300) moves, and then restores to its original state by elastic restoring force, thereby enabling the brake pad portion (300) to be positioned back to its original position.

[0053] Since the vehicle brake device (2) according to the second embodiment of the present invention has the same operation and effect as the vehicle brake device (1) according to the first embodiment, this is omitted.

[0054] FIG. 15 is a perspective view of a vehicle brake device according to a third embodiment of the present invention, FIG. 16 is a diagram showing a state in which a return part is disassembled from a brake pad part of a vehicle brake device according to a third embodiment of the present invention, and FIG. 17 is a perspective view showing a return part of a vehicle brake device according to a third embodiment of the present invention.

[0055] Hereinafter, a vehicle brake device according to the third embodiment of the present invention will be described. In this case, specific descriptions of the contents of the third embodiment that are identical to those of the first and second embodiments will be omitted.

[0056] Referring to FIGS. 15 to 17, the return portion (400) of the vehicle brake device (3) includes a pair of return catch portions (440), a pair of return spring portions (420), and a return contact portion (410). The pair of return catch portions (440) pass through a catch hole portion (312a) and engage with the brake pad portion (300).

[0057] The return locking portion (440) includes a return locking body (441) and a return locking block (442). The return locking body (441) is connected to the return connection portion (430) and passes through the locking hole portion (312a). The return locking block (442) is formed to be extended and bent to one side from the return locking body (441) and contacts the torque member portion (100). At this time, the width of the adjacent return locking block (442) may be larger than the size of the locking hole portion (312a).

[0058] A pair of return spring portions (420) are formed to be bent and extended to face each of the return catch portions (440) at a pair of return catch portions (440).

[0059] The return contact portion (410) connects a pair of return spring portions (420) and contacts the torque member portion (100).

[0060] The return locking portion (440) includes a return locking body (441) and a return locking block (442). The return locking body (441) is connected to the return connection portion (430) and passes through the locking hole portion (312a). The return locking block (442) is formed to be extended and bent to one side from the return locking body (441) and contacts the torque member portion (100). At this time, the width of the adjacent return locking block (442) may be larger than the size of the locking hole portion (312a).

[0061] The return contact portion (410) includes a pair of first return contact portions (411) and a second return contact portion (412). The pair of first return contact portions (411) are each connected to a pair of return spring portions (420) and are in contact with the torque member portion (100). The second return contact portion (412) connects the pair of first return contact portions (411) and is in contact with the torque member portion (100). The pair of first return contact portions (411) and the second return contact portion (412) form a 'C' shape.

[0062] The operation and effect of the vehicle brake device (3) according to the third embodiment of the present invention are the same as the operation and effect of the vehicle brake device (1) according to the first embodiment and the vehicle brake device (2) according to the second embodiment, so they are omitted.

[0063] Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom.

[0064] Therefore, the true technical scope of protection of the present invention should be determined by the following claims. Explanation of the symbols

[0065] 1 : Vehicle brake system 10 : Brake disc 100 : Talk Member Section 200 : Padliner Section 300: Brake pad section 310: Backplate section 311 : Backplate main body 312 : Pad protrusion 312a : Locking hole part 320 : Elastic member 400 : Return section 410 : Return contact section 420: Return spring section 421: Elastic guide section 430 : Return connection part 440 : Return locking part 441 : Return jammed body 442 : Return jammed block

Claims

Claim 1 A brake device for a vehicle, comprising: a torque member portion surrounding a brake disc; a pair of pad liner portions mounted facing each other on the torque member portion; a pair of brake pad portions each disposed on the pair of pad liner portions, movable along the pad liner portions, and having a locking hole portion formed therein; and a plurality of return portions that contact the torque member portion, penetrate the pair of brake pad portions each and are restrained to the brake pad portions, return the brake pad portions to their original position by elastic restoring force, and pass through the locking hole portion to engage with the brake pad portions; wherein the return portions include: a pair of return contact portions contacting the torque member portion; a pair of return spring portions each connected to the pair of return contact portions; a return connection portion connecting adjacent return spring portions; and a return locking portion formed to be bent and extended to one side from the return connection portion, and pass through the locking hole portion to engage with the brake pad portions. Claim 2 delete Claim 3 delete Claim 4 A vehicle brake device according to claim 1, characterized in that an elastic inducing part that induces elastic deformation is formed in the return spring part. Claim 5 A vehicle brake device according to claim 1, wherein the return catch portion comprises: a return catch body that is formed to be extended and bent to one side from the return connection portion and passes through the catch hole portion; and a return catch block that is formed to be extended and bent to one side from the return catch body and engages with the brake pad portion. Claim 6 A vehicle brake device according to claim 5, characterized in that the width of the return catch block is smaller than the size of the catch hole portion, and the return catch body is formed to be inclined such that the angle of inclination becomes increasingly larger as it moves away from the return connection portion. Claim 7 A vehicle brake device according to claim 1, wherein the return contact portion is formed to be bent to one side from the return spring portion and contacts the torque member portion. Claim 8 A vehicle brake device according to claim 1, wherein the return portion comprises: a pair of return catch portions that pass through the catch hole portion and engage with the brake pad portion; a pair of return connecting portions that are bent and extended to face the return catch portions from the return catch portions; a pair of return contact portions that are bent and extended to one side from the return connecting portions and contact the torque member portion; and a return spring portion that is connected to the adjacent return contact portions and is formed in a curved shape. Claim 9 A vehicle brake device according to claim 8, wherein the return catch portion comprises: a return catch body connected to the return connection portion and passing through the catch hole portion; and a return catch block formed to be bent and extended to one side from the return catch body and contacting the torque member portion. Claim 10 A vehicle brake device according to claim 1, wherein the return portion comprises: a pair of return catch portions that pass through the catch hole portion and engage with the brake pad portion; a pair of return spring portions that are formed to extend and bend to one side from the pair of return catch portions; and a return contact portion that connects the pair of return spring portions and contacts the torque member portion. Claim 11 A vehicle brake device according to claim 10, wherein the return catch portion comprises: a return catch body connected to the return connection portion and passing through the catch hole portion; and a return catch block formed to be bent and extended to face the return catch body from the return catch body and contacting the torque member portion. Claim 12 A vehicle brake device according to claim 11, wherein the return contact portion comprises: a pair of first return contact portions each connected to a pair of return spring portions and in contact with the torque member portion; and a second return contact portion connecting the pair of first return contact portions and in contact with the torque member portion. Claim 13 A vehicle brake device according to claim 1, wherein the brake pad portion comprises: a back plate portion in which the locking hole portion is formed; and a friction member connected to the back plate portion and in contact with the brake disc. Claim 14 A vehicle brake device according to claim 13, wherein the backplate portion comprises: a backplate body to which the friction member is coupled; and a pair of pad protrusions each formed protruding from both sides of the backplate body and having the locking hole portion formed therein.

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