Pad liner for braking apparatus

Abstract

An invention relating to a pad liner for a brake device is disclosed. The disclosed pad liner for a brake device is characterized by comprising: a pad liner body disposed between a pair of pin members; a pair of pad liner support members each extending from both ends of the pad liner body and supporting a pair of pin members; a pad liner return member connected to the pad liner body to press a first brake pad and in contact with the first brake pad to provide an elastic restoring force upon brake release to restore the first brake pad to its original state; and a pad liner extension member connected to the pad liner body, in contact with a second brake pad to press a second brake pad, and positioned below the pad liner return member.

Description

Technology Field

[0001] The present invention relates to a pad liner for a brake device, and more specifically, to a pad liner for a brake device that prevents the occurrence of drag torque and rattle noise. Background Technology

[0002] Generally, among braking devices, a brake pad contacts a brake disc to provide braking force and is composed of multiple parts.

[0003] In a monobody type brake system, the brake pads are mounted on pins, and a pair of brake pads are positioned on both sides of the brake disc. A pad liner is coupled to the pins and presses against the pair of brake pads. At this time, as one of the pair of brake pads moves, i.e., slides, the pair of brake pads either come into contact with the brake disc or the pair of brake pads separate from the brake disc. However, because the pad liner presses against the pair of brake pads, the sliding of the brake pads does not occur properly, resulting in a problem where drag torque is generated. Additionally, if the pressing force exerted by the pad liner against the pair of brake pads weakens, rattle noise occurs.

[0004] The background technology for the present invention is disclosed in Korean Published Patent Application No. 10-2019-0021566 (Title of invention: Pad liner for caliper, Date of publication: March 6, 2019). The problem to be solved

[0005] The present invention was created in response to the aforementioned necessity, and aims to provide a pad liner for a brake device that prevents the occurrence of drag torque and rattle noise. means of solving the problem

[0006] To achieve the above-mentioned purpose, the pad liner for a brake device according to the present invention comprises: a pad liner body disposed between a pair of pin members; a pair of pad liner support members each extending from both ends of the pad liner body and supporting the pair of pin members; a pad liner return member connected to the pad liner body to press a first brake pad and in contact with the first brake pad to provide an elastic restoring force upon release of braking to restore the first brake pad to its original state; and a pad liner extension member connected to the pad liner body, in contact with the second brake pad to press the second brake pad, and positioned below the pad liner return member.

[0007] In addition, the pad liner return portion is characterized by having a length longer than the length of the pad liner extension portion.

[0008] Additionally, the pad liner return portion is characterized by comprising: a first pad liner return portion that is extended to one side from the pad liner body and is located above the pad liner extension portion; and a pair of second pad liner return portions that are spaced apart from the first pad liner return portion, are extended to one side, and contact the first brake pad to press the first brake pad.

[0009] Additionally, the pad liner extension part is characterized by comprising: a first pad liner extension part that is formed to extend to the other side from the pad liner body and is located lower than the first pad liner return part; and a pair of second pad liner extension parts that are spaced apart from the first pad liner extension part and extended to the other side, and contact the second brake pad to press the second brake pad.

[0010] In addition, the second pad liner extension part is characterized by having a width wider than the width of the second pad liner return part.

[0011] In addition, it is characterized by further including a pad liner coupling part that is extended and bent toward the caliper body side from the second pad liner extension part and is fitted into the coupling groove of the caliper body by means of elastic force.

[0012] In addition, the above-mentioned coupling groove is characterized by the width decreasing from the outer side to the inner side on the caliper body. Effects of the invention

[0013] The pad liner for a brake device according to the present invention has the effect of preventing drag torque and rattle noise by ensuring that the position of the second brake pad is firmly fixed and that the sliding of the first brake pad is smoothly performed during braking and release, as the pad liner extension part that presses the second brake pad is located below the pad liner return part that presses the first brake pad.

[0014] In addition, the present invention provides a pad liner coupling part to which the pad liner extension part is fitted and coupled to the caliper body, thereby further applying a load to the second brake pad by the pad liner extension part, which has the effect of further fixing the position of the second pad liner return part. Brief explanation of the drawing

[0015] FIG. 1 is a perspective view of a vehicle brake device according to one embodiment of the present invention. Figure 2 is an enlarged view of Figure 1. Figure 3 is a cross-sectional view of Figure 1. FIG. 4 is a perspective view of a key part of a vehicle brake device according to one embodiment of the present invention. Figure 5 is an enlarged view of Figure 4. Fig. 6 is a side view of Fig. 4. FIG. 7 is an exploded perspective view of a vehicle brake device according to one embodiment of the present invention. FIG. 8 is a perspective view of a pad liner for a brake device according to one embodiment of the present invention. FIG. 9 is a side view of a pad liner for a brake device according to one embodiment of the present invention. FIG. 10 is a drawing showing the process of mounting a pad liner for a brake device of a vehicle brake device according to one embodiment of the present invention onto a pin member. FIG. 11 is a diagram showing the state in which the first brake pad and the second brake pad are in contact with the brake disc according to the operation of the pressurizing part of a vehicle brake device according to one embodiment of the present invention. Specific details for implementing the invention

[0016] Hereinafter, a pad liner for a brake device according to an embodiment of the present invention will be described with reference to the attached drawings.

[0017] 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.

[0018] FIG. 1 is a perspective view of a vehicle brake device according to an embodiment of the present invention, FIG. 2 is an enlarged view of FIG. 1, FIG. 3 is a cross-sectional view of FIG. 1, FIG. 4 is a perspective view of a key part of a vehicle brake device according to an embodiment of the present invention, FIG. 5 is an enlarged view of FIG. 4, FIG. 6 is a side view of FIG. 4, FIG. 7 is an exploded perspective view of a vehicle brake device according to an embodiment of the present invention, FIG. 8 is a perspective view of a pad liner for a brake device according to an embodiment of the present invention, FIG. 9 is a side view of a pad liner for a brake device according to an embodiment of the present invention, FIG. 10 is a drawing showing the process of mounting a pad liner for a vehicle brake device according to an embodiment of the present invention onto a pin member, and FIG. 11 is a drawing showing the state in which a first brake pad and a second brake pad are in contact with a brake disc according to the operation of a pressurizing part of a vehicle brake device according to an embodiment of the present invention.

[0019] Referring to FIGS. 1 to 11, a vehicle brake device (1) according to one embodiment of the present invention includes a pair of pin members (10), a first brake pad (20), a second brake pad (30), a brake disc (40), a pressure member (50), and a pad liner (2) for the brake device.

[0020] A pad liner (2) for a brake device according to one embodiment of the present invention includes a pad liner body (100), a pair of pad liner support portions (200), a pad liner return portion (300), and a pad liner extension portion (400). The pad liner body (100) is positioned between a pair of pin members (10). A pair of pin members (10) are installed spaced apart from each other on a caliper body (60). An installation hole portion (61) is formed in the central portion of the caliper body (60) and positioned in an up-and-down direction (based on FIG. 1), and a pair of pin members (10) are installed spaced apart from each other in the installation hole portion (61).

[0021] The pad liner body (100) is positioned between a pair of pin members (10). A pair of pin members (10) are installed on a caliper body (60) at a distance from each other. The caliper body (60) has an installation section (not shown) in the shape of a hole positioned vertically (based on FIG. 1) formed in the central part, and a pair of pin members (10) are installed at a distance from each other in the installation section.

[0022] The pad liner body (100) includes a first pad liner body (110), a second pad liner body (120), and a third pad liner body (130). The first pad liner body (110) is positioned between a pair of pin members (10). The second pad liner body (120) is formed to be extended and bent to one side from the first pad liner body (110). At this time, the second pad liner body (120) is formed to be extended and bent downward from the first pad liner body (110) (based on FIG. 2 and FIG. 4). The third pad liner body (130) is formed to be extended and bent to the other side from the first pad liner body (110). At this time, the third pad liner body (130) is extended downward from the first pad liner body (110) by bending (based on FIG. 2 and FIG. 4).

[0023] A pair of pad liner support members (200) are each extended from both ends of the pad liner body (100) and each support a pair of pin members (10). Specifically, the pair of pad liner support members (200) are each extended from both ends of the first pad liner body (110) of the pad liner body (100) to be positioned on the lower side (based on FIG. 2 and FIG. 4) of the pair of pin members (10) and each support the pin members (10). The movement of the pad liner (2) for the brake device on the pair of pin members (10) is restricted, thereby effectively preventing rattle noise.

[0024] A pair of pad liner support members (200) includes a pair of first pad liner support members (210) and a pair of second pad liner support members (220). A pair of first pad liner support members (210) are formed to be bent and extended from both ends of the first pad liner body (110) of the pad liner body (100) toward a pair of pin members (10). A pair of second pad liner support members (220) are each formed to be bent and extended from a pair of second pad liner support members (220) and each support a pair of pin members (10). Specifically, a pair of second pad liner support members (220) are located on the lower side (based on FIGS. 2 to 5) of a pair of pin members (10) and support the lower side (based on FIGS. 2 to 5) of a pair of pin members (10).

[0025] A pair of second pad liner support portions (220) are each extended by bending from a pair of first pad liner support portions (210) toward a pair of pin members (10) and are each in contact with a pair of pin members (10). A pair of second pad liner support portions (220) are in contact with the lower part of a pair of pin members (10) (based on FIG. 3, FIG. 9 to FIG. 11). As a result, a pad liner (2) for a brake device can be stably mounted on the pin members (10).

[0026] The pad liner return unit (300) is connected to the pad liner body (100) to press the first brake pad (20) and, when in contact with the first brake pad (20) and brake is released, provides an elastic restoring force to restore the first brake pad (20) to its original state.

[0027] The pad liner return unit (300) can effectively prevent rattle noise by applying a load to the first brake pad (20) and pressing the first brake pad (20) to restrict the first brake pad (20) from moving upward. At this time, the pad liner return unit (300) presses the first brake pad (20) within the range where the first brake pad (20) moves, that is, slides, thereby preventing drag torque from being generated.

[0028] The pad liner return portion (300) is formed to extend from the second pad liner body (120) of the pad liner body (100) toward the first brake pad (20) and contacts the first back plate (21) of the first brake pad (20). The pad liner return portion (300) is elastically deformed by the first brake pad (20) which moves toward the brake disc (40) through the pressurizing portion (50) during braking, and provides an elastic restoring force to the first brake pad (20) when braking is released.

[0029] At this time, the pressure member (50) is mounted on the caliper body (60) and is configured to include a motor module part (not shown), a screw bar (not shown), a nut part (not shown), and a piston part (not shown), and can be varied within the range of applying pressure to the first brake pad (20).

[0030] The pad liner return section (300) includes a first pad liner return section (310) and a second pad liner return section (320). The first pad liner return section (310) is formed to extend to one side from the pad liner body (100) and is located above the pad liner extension section (400) described later.

[0031] A pair of second pad liner return sections (320) are spaced apart from the first pad liner return section (310) and extended to one side, and contact the first brake pad (20) to press the first brake pad (20). A pair of second pad liner return sections (320) contact the first back plate (21) of the first brake pad (20) to press the first back plate (21).

[0032] Specifically, the first brake pad (20) includes a first back plate (21) and a first friction member (22). It is movably disposed on one side of the brake disc (40) on a pair of pin members (10). A pair of first through-hole portions (21a) are formed in the first back plate (21) through which the pair of pin members (10) pass. Through this, the first brake pad (20) can not only be easily coupled to the pair of pin members (10) but can also be movable along the pair of pin members (10).

[0033] The first friction member (22) is coupled to the first back plate (21) and contacts the brake disc (40). The first friction member (22) may be made of an elastic material and contacts one side of the brake disc (40). The first friction member (22) is coupled to the first back plate (21) so as to face one side of the brake disc (40).

[0034] A pair of second pad liner return sections (320) are formed extending horizontally apart from the first pad liner return section (310) and are inserted into the first installation groove (21b) of the first back plate (21) to come into contact with the first back plate (21). At this time, the first pad liner return section (310) can be elastically deformed upon contact with the first back plate (21) and tilted at a predetermined angle.

[0035] The pad liner extension part (400) is connected to the pad liner body (100), contacts the second brake pad (30) to press the second brake pad (30), and is located below the pad liner return part (300). The pad liner extension part (400) is located below the pad liner return part (300) by a set distance (S). As a result, the pressing force applied by the pad liner extension part (400) to the second brake pad (30) is increased, thereby further fixing the position of the second brake pad (30).

[0036] The pad liner return section (300) has a length (L1) that is longer than the length (L2) of the pad liner extension section (400) (see FIG. 8 and FIG. 9). The pad liner return section (300) has a length that is 8 mm or more and 10 mm or less longer than the length of the pad liner extension section (400). For example, if the pad liner return section (300) is 18 mm or 20 mm, the pad liner extension section (400) may be 10 mm. As a result, the first brake pad (20) can move, that is, slide smoothly, and the fixing force of the second brake pad (30) can be improved.

[0037] The pad liner extension part (400) includes a first pad liner extension part (410) and a second pad liner extension part (420). The first pad liner extension part (410) is formed to extend to the other side from the pad liner body (100) and is located below the first pad liner return part (310). At this time, the first pad liner extension part (410) is formed to extend to the other side from the third pad liner body (130) of the pad liner body (100).

[0038] A pair of second pad liner extensions (420) are formed to extend to the other side, spaced apart from the first pad liner extension (410), and contact the second brake pad (30) to press the second brake pad (30). A pair of second pad liner extensions (420) contact the second back plate (31) of the second brake pad (30) to press the second back plate (31), and are located below the second pad liner return portion (320).

[0039] Specifically, the second brake pad (30) includes a second back plate (31) and a second friction member (32). The second back plate (31) is coupled to a pair of pin members (10) and is positioned on the other side of the brake disc (40). A pair of second through-hole portions (31a) through which a pair of pin members (10) pass are formed in the second back plate (31) (see FIG. 7). Through this, the second brake pad (30) can be easily coupled to a pair of pin members (10).

[0040] The second friction member (32) is coupled to the second back plate (31) and contacts the brake disc (40). The second friction member (32) may be made of an elastic material and contacts the other side of the brake disc (40). The second friction member (32) is coupled to the second back plate (31) so as to face the other side of the brake disc (40).

[0041] A pair of second pad liner extensions (420) are formed extending horizontally apart from the first pad liner extension (410) and are inserted into the second installation groove (31b) of the second back plate (31) to contact the second back plate (31).

[0042] The pad liner extension (400) is elastically deformed upon contact with the second back plate (31) and tilted at a predetermined angle. At this time, the pad liner extension (400) is positioned lower than the pad liner return (300). As a result, the pad liner extension (400) can apply further load and pressure to the second back plate (31).

[0043] The second pad liner extension part (420) has a width (W2) that is wider than the width (W1) of the second pad liner return part (320) (see FIG. 8 and FIG. 9). The second pad liner extension part (420) may have a width (W2) that is 0.5 mm or more and 1 mm or less wider than the width (W1) of the second pad liner return part (320). For example, if the width of the second pad liner return part (320) is 6.5 mm, the width of the second pad liner extension part (420) may be 7 mm or 8 mm.

[0044] As a result, the pressure exerted by the second pad liner extension (420) on the second brake pad (30) may be greater than the pressure exerted by the first pad liner extension (410) on the first brake pad (20). Consequently, the second brake pad (30) can be firmly fixed at a set position.

[0045] The pad liner coupling portion (430) is formed to be extended and bent toward the caliper body (60) from the second pad liner extension portion (420), and is fitted into the coupling groove portion (62) of the caliper body (60) by means of elastic force. Specifically, the pad liner coupling portion (430) is elastically deformed into a V-shape and inserted into the coupling groove portion (62). Subsequently, the pad liner coupling portion (430) is restored to its original state by means of elastic force and fitted into the coupling groove portion (62).

[0046] The width (w) of the coupling groove (62) decreases from the outer side to the inner side on the caliper body (60). As a result, the pad liner coupling portion (430) can be easily inserted into the coupling groove (62), and can also be firmly fitted into the coupling groove (62) while being restored to its original state by elastic force.

[0047] The pad liner coupling portion (430) includes a first pad liner coupling portion (431) and a second pad liner coupling portion (432). The first pad liner coupling portion (431) is formed to be extended by bending from the first pad liner extension portion (410) toward the caliper body (60). The second pad liner coupling portion (432) is formed to be extended by bending from the first pad liner coupling portion (431) so as to face the first pad liner coupling portion (431).

[0048] Hereinafter, with reference to FIG. 11, we will examine the operation and effect of a pad liner (2) for a brake device according to one embodiment of the present invention.

[0049] When the driver operates the brake pedal (not shown), the pressurizing part (50) presses the first brake pad (20) toward the brake disc (40) (see FIG. 11). As a result, the first brake pad (20) and the second brake pad (30) are frictionally rubbed against the brake disc (40), thereby generating braking force.

[0050] At this time, the second pad liner return part (320) of the pad liner return part (300) presses the first brake pad (20), and the first brake pad (20) moves toward the brake disc (40) and comes into close contact with the brake disc (40). The second pad liner extension part (420) of the pad liner extension part (400) presses the second brake pad (30), and fixes the position of the second brake pad (30) to prevent the second brake pad (30) from moving.

[0051] Conversely, when the brake is released, the pressurizing part (50) is separated from the first brake pad (20), and the elastic restoring force of the second pad liner return part (320) of the pad liner return part (300) restores the first brake pad (20), causing the first brake pad (20) to be sufficiently separated from the brake disc (40). Accordingly, the first brake pad (20) and the second brake pad (30) are separated to the left and right sides of the brake disc (40) (based on FIG. 11). At this time, by sufficiently separating the first brake pad (20) and the second brake pad (30) from the brake disc (40), a drag phenomenon caused by contact friction between the first brake pad (20) and the second brake pad (30) and the brake disc (40) can be prevented. In addition, rattle noise can be prevented.

[0052] At this time, the second pad liner return part (320) of the pad liner return part (300) presses the first brake pad (20), and the first brake pad (20) is moved to the opposite side of the brake disc (40) by releasing the pressure of the pressure part (50) and is separated from the brake disc (40). The second pad liner extension part (420) of the pad liner extension part (400) presses the second brake pad (30), fixing the position of the second brake pad (30) to prevent the second brake pad (30) from moving.

[0053] 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.

[0054] Therefore, the true technical scope of protection of the present invention should be determined by the following claims. Explanation of the symbols

[0055] 1 : Vehicle brake device 10 : Pin member 20: 1st brake pad 21: 1st backplate 21a: First through-hole portion 21b: First installation groove portion 22 : First friction member 30 : Second brake pad 31: Second backplate 31a: Second through-hole portion 31b : Second installation groove 32 : Second friction member 40: Brake disc 50: Pressure part 60 : Caliper body 61 : Installation hole 62 : Engagement groove 2 : Pad liner for brake device 100 : Pad liner main body 110 : 1st pad liner main body 120 : 2nd Pad Liner Body 130 : 3rd Pad Liner Body 200: Pad liner support 210: First pad liner support 220: Second pad liner support 300: Pad liner return section 310: 1st pad liner return section 320: 2nd pad liner return section 400 : Pad liner extension 410 : First pad liner extension 420: Second pad liner extension part 430: Pad liner coupling part 431: First pad liner connecting part 432: Second pad liner connecting part

Claims

Claim 1 A pad liner body disposed between a pair of pin members; a pair of pad liner support members each extending from both ends of the pad liner body and supporting the pair of pin members respectively; a pad liner return member connected to the pad liner body to press a first brake pad and in contact with the first brake pad to provide an elastic restoring force upon brake release to restore the first brake pad to its original state; and a pad liner extension member connected to the pad liner body, in contact with a second brake pad to press the second brake pad, and positioned below the pad liner return member; wherein the pad liner return member comprises a first pad liner return member extending from one side of the pad liner body and positioned above the pad liner extension member; A pad liner for a brake device, characterized by including: a pair of second pad liner return parts that are spaced apart from the first pad liner return part and extend to one side, and contact the first brake pad to press the first brake pad. Claim 2 A pad liner for a brake device according to claim 1, characterized in that the length of the pad liner return portion is longer than the length of the pad liner extension portion. Claim 3 delete Claim 4 A pad liner for a brake device according to claim 1, wherein the pad liner extension part comprises: a first pad liner extension part formed extending to the other side from the pad liner body and positioned lower than the first pad liner return part; and a pair of second pad liner extension parts formed extending to the other side spaced apart from the first pad liner extension part and contacting the second brake pad to press the second brake pad. Claim 5 A pad liner for a brake device according to claim 4, characterized in that the width of the second pad liner extension portion is wider than the width of the second pad liner return portion. Claim 6 A pad liner for a brake device, characterized in that, in claim 4, it further comprises a pad liner coupling portion that is formed to be extended and bent toward the caliper body side from the second pad liner extension portion and is fitted and coupled to the coupling groove portion of the caliper body by means of elastic force. Claim 7 A pad liner for a brake device according to claim 6, characterized in that the width of the coupling groove decreases from the outer side to the inner side on the caliper body.

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