Brake apparatus

Abstract

A brake device according to the present invention comprises: a torque member disposed on a rotor; a caliper body portion connected to the torque member and moving parallel to a first direction or a second direction opposite to the first direction with respect to the torque member; a pad portion disposed on the first and second directions of the rotor and seated on the torque member, having a backplate support surface facing the torque member, wherein the directions in which the backplate support surfaces extend intersect each other; and a piston portion disposed on the caliper body portion and moving in a first direction or a second direction to adjust the amount of pressure applied to the pad portion.

Description

Technology Field

[0001] The present invention relates to a brake device, and more specifically, to a brake device for decelerating or stopping the movement speed of a vehicle's wheel. Background Technology

[0002] As the drive system of a vehicle becomes electrified, a motor can be installed in the vehicle's wheel. Both the motor and the brake must be installed inside the vehicle's wheel, and as the motor is additionally installed, the volume of the space required for mounting the brake is reduced.

[0003] The braking performance of a brake is proportional to its size; as the volume of the space where the brake is mounted decreases, the braking performance also decreases.

[0004] Accordingly, there is a demand for a braking device that can maintain or improve braking performance even when the size of the brake is reduced.

[0005] The background technology of the present invention is disclosed in Korean Registered Patent Publication No. 10-0633467 (Registered on October 2, 2006, Title of Invention: Disc Brake for Vehicle). The problem to be solved

[0006] The objective of the present invention is to provide a brake device capable of maintaining or improving braking performance even when the size of the brake is reduced.

[0007] Alternatively, the object of the present invention is to provide a brake device in which the friction material wears uniformly. means of solving the problem

[0008] A brake device according to the present invention comprises: a torque member disposed on a rotor; a caliper body portion connected to the torque member and moving parallel to the torque member in a first direction or a second direction opposite to the first direction; a pad portion disposed on the first direction and the second direction of the rotor and seated on the torque member, having a backplate support surface facing the torque member, wherein the directions in which the backplate support surfaces extend intersect each other; and a piston portion disposed on the caliper body portion and moving in the first direction or the second direction to adjust the amount of pressure applied to the pad portion.

[0009] The direction in which the above-mentioned backplate support surface extends may be directed toward the rotational center of the above-mentioned rotor.

[0010] The angle of attack formed by the normal to the backplate support surface and the tangent to the rotational direction of the rotor can be set to within 10 degrees.

[0011] The above pad portion may include an outer pad portion disposed in the first direction of the rotor; and an inner pad portion disposed in the second direction of the rotor.

[0012] The above caliper body portion may include: a caliper body; and a return portion disposed between the caliper body and the pad portion, which presses the outer pad portion in the first direction and presses the inner pad portion in the second direction.

[0013] The above return portion may include a pad liner that is seated on the caliper body and positioned between the caliper body and the pad portion to reduce friction generated by the movement of the pad portion.

[0014] The above return portion may include an integrated return spring that extends from the pad liner, presses the outer pad portion in the first direction, and presses the inner pad portion in the second direction.

[0015] The above return portion may include a coupled return spring that is coupled to the pad liner, presses the outer pad portion in the first direction, and presses the inner pad portion in the second direction.

[0016] The outer pad portion may include a first outer pad and a second outer pad arranged spaced apart from each other, and the inner pad portion may include a first inner pad and a second inner pad arranged spaced apart from each other.

[0017] The torque member may include an outer torque column disposed between the first outer pad and the second outer pad; and an inner torque column disposed between the first inner pad and the second inner pad.

[0018] The above pad liner can apply pressure to separate the pad portion from the above torque member.

[0019] The above piston portion may include a first piston in contact with the first inner pad; and a second piston in contact with the second inner pad.

[0020] The torque member may include: an outer return pin connected to the outer torque column, protruding in the second direction, positioned between the first outer pad and the second outer pad, and supporting the outer pad portion; and an inner return pin connected to the inner torque column, protruding in the first direction, positioned between the first inner pad and the second inner pad, and supporting the inner pad portion.

[0021] The torque member may include an outer return pin seating portion formed concavely to correspond to the shape of the outer return pin; and an inner return pin seating portion formed concavely to correspond to the shape of the inner return pin.

[0022] The outer torque column supports the outer pad portion, and the inner torque column can support the inner pad portion.

[0023] The torque member may include a column bridge connecting the outer torque column and the inner torque column.

[0024] The above caliper body may include a column bridge seating portion formed concavely to correspond to the shape of the column bridge. Effects of the invention

[0025] Through the brake device according to the present invention, braking performance can be maintained or improved even when the size is reduced.

[0026] Alternatively, through the brake device according to the present invention, the friction material can be worn uniformly, thereby improving durability. Brief explanation of the drawing

[0027] FIG. 1 is a perspective view of a brake device according to a first embodiment of the present invention, viewed from a first point in time. FIG. 2 is a perspective view of a brake device according to a first embodiment of the present invention, viewed from a second point in time. FIG. 3 is an exploded perspective view of a brake device according to a first embodiment of the present invention. FIG. 4 is a front view of a first embodiment of a pad portion according to the present invention. FIG. 5 is a front view of a first embodiment of a return unit disposed in a brake device according to the present invention. FIG. 6 is a perspective view of a first embodiment of a return unit according to the present invention. FIG. 7 is a front view of a second embodiment of a return section disposed in a brake device according to the present invention. FIG. 8 is a perspective view of a second embodiment of a return unit according to the present invention. FIG. 9 is a front view of a third embodiment of a return section disposed in a brake device according to the present invention. FIG. 10 is a perspective view of a third embodiment of a return unit according to the present invention. FIG. 11 is an exploded perspective view of a third embodiment of a return unit according to the present invention. FIG. 12 is a perspective view of a brake device according to a second embodiment of the present invention, viewed from a first point in time. FIG. 13 is a perspective view of a brake device according to a second embodiment of the present invention, viewed from a second point in time. FIG. 14 is an exploded perspective view of a brake device according to a second embodiment of the present invention. FIG. 15 is a front view of a second embodiment of a pad portion according to the present invention. FIG. 16 is a perspective view of a brake device according to a third embodiment of the present invention, viewed from a first point in time. FIG. 17 is a perspective view of a brake device according to a third embodiment of the present invention, viewed from a second point in time. FIG. 18 is an exploded perspective view of a brake device according to a third embodiment of the present invention. FIG. 19 is a cross-sectional view of a brake device according to a third embodiment of the present invention. FIG. 20 is a front view of a brake device according to a third embodiment of the present invention. FIG. 21 is a front view of a third embodiment of a pad portion according to the present invention. Specific details for implementing the invention

[0028] Hereinafter, a brake device according to the present invention will be described with reference to the attached drawings. In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for 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 intention or convention of the user or operator. Therefore, the definitions of these terms should be based on the content throughout this specification.

[0030] FIG. 1 is a perspective view of a brake device according to a first embodiment of the present invention viewed from a first viewpoint, FIG. 2 is a perspective view of a brake device according to a first embodiment of the present invention viewed from a second viewpoint, FIG. 3 is an exploded perspective view of a brake device according to a first embodiment of the present invention, and FIG. 4 is a front view of a first embodiment of a pad portion according to the present invention.

[0031] A brake device (1) will be described with reference to FIGS. 1 to 4.

[0032] The brake device (1) may include a torque member (10), a caliper body part (20), a pad part (30), a piston part (40), and a caliper guide pin (50).

[0033] A pad portion (30) may be disposed on a torque member (10). The torque member (10) may be disposed on a rotor or a disc. According to one embodiment, the torque member (10) may be disposed on a part of the rotor, and the rotor may rotate. The rotor or disc is omitted from the drawing.

[0034] The caliper body portion (20) is connected to the torque member (10) and can move relative to the torque member (10). According to one embodiment, the caliper body portion (20) can move in a first direction and a second direction opposite to the first direction. The moving caliper body portion (20) can come into contact with the pad portion (30) and move the pad portion (30). The pad portion (30) can come into contact with the rotor, and frictional force can be generated between the pad portion (30) and the rotor. Accordingly, the rotational speed of the rotor may decrease or the rotor may stop.

[0035] The pad portion (30) may be disposed on the torque member (10). According to one embodiment, the pad portion (30) may include an inner pad portion (31) and an outer pad portion (32). The inner pad portion (31) may be disposed in a first direction of the rotor (e.g., +X-axis direction), and the outer pad portion (32) may be disposed in a second direction of the rotor (e.g., -X-axis direction).

[0036] A rotor or disc may be placed between the inner pad portion (31) and the outer pad portion (32).

[0037] An inner pad portion (31) positioned in the first direction (e.g., +X-axis direction) of the rotor can move in the second direction (e.g., -X-axis direction) to come into contact with the rotor and generate friction, and an outer pad portion (32) positioned in the second direction (e.g., -X-axis direction) of the rotor can move in the first direction (e.g., +X-axis direction) to come into contact with the rotor and generate friction.

[0038] According to one embodiment, the inner pad portion (31) can be moved in a first direction (e.g., +X-axis direction) by the piston portion (40), and the outer pad portion (32) can be moved in a second direction (e.g., -X-axis direction) by the caliper body portion (20). The caliper body portion (20) can be moved relative to the torque member (10) by the piston portion (40). Accordingly, the caliper body portion (20) can come into contact with the outer pad portion (32) and move the outer pad portion (32).

[0039] The piston portion (40) may be disposed in the caliper body portion (20). According to one embodiment, one end of the piston portion (40) may be supported by the caliper body portion (20), and the other end may be connected to the pad portion (30).

[0040] The length (e.g., X-axis direction) of the piston portion (40) may change or move (e.g., X-axis direction). As the length of the piston portion (40) changes or moves, the pad portion (30) in contact with the piston portion (40) may move in a first direction (e.g., +X-axis direction) or in a second direction (e.g., -X-axis direction). According to one embodiment, the inner pad portion (31) in contact with the piston portion (40) may move.

[0041] As the piston portion (40) increases in length or moves in the first direction, the inner pad portion (31) in contact with the piston portion (40) can move in the first direction. The inner pad portion (31) moving in the first direction may come into contact with the rotor or disc, and friction may occur. When the inner pad portion (31) comes into contact with the rotor or disc, the piston portion (40) can move the caliper body portion (20) in the second direction by means of a reaction force.

[0042] As the caliper body portion (20) moves in the second direction, the caliper body portion (20) can move to the outer pad portion (32), and the caliper body portion (20) and the outer pad portion (32) can come into contact. The outer pad portion (32) can move in the second direction by coming into contact with the caliper body portion (20). The outer pad portion (32) moving in the second direction may come into contact with the rotor or disc, and friction may occur.

[0043] In this way, the caliper body part (20) and the pad part (30) can move according to the change in length or movement of the piston part (40), and friction occurs between the pad part (30) and the rotor or disc, so that the rotational speed of the rotor is reduced or the rotor is stopped. Accordingly, the speed of the vehicle can be reduced or the vehicle can be stopped.

[0044] The caliper guide pin (50) can connect the torque member (10) and the caliper body part (20). According to one embodiment, the caliper guide pin (50) can be inserted into the torque member (10) by penetrating the caliper body part (20) and fixed to the torque member (10). Accordingly, the caliper body part (20) can move along the longitudinal direction (e.g., X-axis direction) of the caliper guide pin (50).

[0045] Below, the detailed configuration of the torque member (10), caliper body part (20), pad part (30), and piston part (40) is described.

[0046] The torque member (10) may include a torque member body (100), a seating groove (101), a seating projection (102), a seating leg portion (103), and a torque member hole (104).

[0047] The torque member body (100) may be disposed on a rotor or a disk. According to one embodiment, the shape of the torque member body (100) may be approximately 'C'-shaped, and a rotor or a disk may be disposed between the torque member bodies (100).

[0048] The seating groove (101) may be provided as a concave groove in the torque member body (100). The return portion (210) of the caliper body portion (20) may be placed in the seating groove (101). According to one embodiment, the return portion (210) may be inserted into the seating groove (101).

[0049] The seating projection (102) may be provided as a projection protruding from the torque member body (100). The return portion (210) of the caliper body portion (20) may be disposed on the seating projection (102). According to one embodiment, the seating projection (102) may be disposed adjacent to the seating groove (101). More specifically, the seating projection (102) may be disposed on the upper side (e.g., +Z direction) of the seating groove (101).

[0050] The seating leg portion (103) can be provided as a surface constituting the torque member body (100). The return portion (210) of the caliper body portion (20) can be placed on the seating leg portion (103).

[0051] The torque member hole (104) may be provided as a concave groove or hole in the torque member body (100). The caliper guide pin (50) may be inserted into the torque member hole (104) and fixed by penetrating the caliper body portion (20).

[0052] The torque member (10) may further include an inner torque column (110), an outer torque column (120), and a column bridge (130). Descriptions of the inner torque column (110), the outer torque column (120), and the column bridge (130) will be described later together with descriptions of FIGS. 12 to 21.

[0053] The caliper body portion (20) may be positioned to be connected to the torque member (10). According to one embodiment, the caliper guide pin (50) may be fixed to the torque member (10) by penetrating the caliper body portion (20). The caliper body portion (20) may move along the longitudinal direction (e.g., X-axis direction) of the caliper guide pin (50). More specifically, the caliper body portion (20) may move along the caliper guide pin (50) parallel to a first direction (e.g., +X-axis direction) or parallel to a second direction opposite to the first direction (e.g., -X-axis direction).

[0054] As the caliper body part (20) moves, the pad part (30) can move relative to the torque member (10). According to one embodiment, the outer pad part (32) can move in a second direction (e.g., -X-axis direction) by the movement of the caliper body part (20).

[0055] The caliper body part (20) may include a caliper body (200) and a return part (210).

[0056] The caliper body (200) may be positioned to cover the torque member body (100). The caliper body portion (20) may include a caliper body guide hole (201) that penetrates the caliper body (200). A caliper guide pin (50) may be positioned to penetrate through the caliper body guide hole (201).

[0057] The caliper body (200) may come into contact with the piston portion (40). According to one embodiment, the piston portion (40) may be positioned between the caliper body (200) and the pad portion (30). The distance between a part of the caliper body (200) and the pad portion (30) may change due to a change in length or movement of the piston portion (40). The piston portion (40) may include a first piston (41) and a second piston (42). As the piston portion (40) changes in length or moves, the amount of pressure applied to the pad portion (30) may be adjusted.

[0058] According to one embodiment, a piston portion (40) may be disposed between the caliper body (200) and the inner pad portion (31), and the piston portion (40) may press the inner pad portion (31) in a first direction (e.g., +X-axis direction). Accordingly, the pad portion (30) may move in the first direction and come into contact with the rotor or disc. As the pad portion (30) comes into contact with the rotor or disc, friction may occur.

[0059] The caliper body (200) may include a caliper body pressure portion (202). The caliper body pressure portion (202) may come into contact with the pad portion (30). According to one embodiment, the caliper body pressure portion (202) may come into contact with the outer pad portion (32) of the pad portion (30). As the caliper body (200) moves, the caliper body pressure portion (202) may come into contact with the outer pad portion (32) and move the outer pad portion (32) in a second direction (e.g., -X-axis direction).

[0060] The return portion (210) may be disposed on the torque member (10). The return portion (210) may be disposed on the torque member (10) and may come into contact with the pad portion (30). The return portion (210) may be elastically deformed, and as the return portion (210) is elastically deformed, the elastic force of the return portion (210) may change. The return portion (210) may come into contact with the pad portion (30) and press the pad portion (30). According to one embodiment, the return portion (210) may come into contact with the inner pad portion (31) and press the inner pad portion (31) to move the inner pad portion (31) in a second direction (e.g., -X-axis direction). The return portion (210) may come into contact with the outer pad portion (32) and press the outer pad portion (32) to move the outer pad portion (32) in a first direction (e.g., +X-axis direction).

[0061] The description of the return section (210) will be described later together with the description of FIGS. 5 to 11.

[0062] The caliper body portion (20) may further include a column bridge seating portion (220). A description of the column bridge seating portion (220) will be given later along with a description of FIG. 14.

[0063] The pad portion (30) can generate friction by contacting the rotor or disk. As friction occurs between the pad portion (30) and the rotor or disk, the rotational speed of the rotor or disk may decrease or stop.

[0064] The pad portion (30) may include an inner pad portion (31) and an outer pad portion (32). The inner pad portion (31) may be positioned in a second direction (e.g., -X-axis direction) of the rotor or disk, and the outer pad portion (32) may be positioned in a first direction (e.g., +X-axis direction) of the rotor or disk.

[0065] The inner pad portion (31) can move in a first direction (e.g., +X-axis direction) to come into contact with the rotor or disk and generate friction, and the outer pad portion (32) can move in a second direction (e.g., -X-axis direction) to come into contact with the rotor or disk and generate friction.

[0066] The pad portion (30) may include a friction pad (301), a back plate (302), and a cover plate (303).

[0067] The friction pad (301) may be provided as a pad that generates friction by contacting a rotor or a disc. The material of the friction pad (301) may include metal, ceramic, fiber, rubber, carbon, etc. The material of the friction pad (301) is not limited thereto and may include various materials.

[0068] The pad portion (30) may include a friction pad projection (3011) protruding from the friction pad (301). The friction pad projection (3011) may be inserted into the backplate hole (3021) of the backplate (302). Accordingly, the bonding force between the friction pad (301) and the backplate (302) may be improved, and no gap may occur between the friction pad (301) and the backplate (302).

[0069] The backplate (302) may be placed on the rear side of the friction pad (301). According to one embodiment, the friction pad (301) may be placed between the backplate (302) and the disc or rotor.

[0070] The pad portion (30) may include a backplate hole (3021) that penetrates the backplate (302). A friction pad projection (3011) may be inserted into the backplate hole (3021).

[0071] The pad portion (30) may include a backplate projection (3022) protruding from the backplate (302). The backplate projection (3022) may be inserted into the cover plate hole (3031) of the cover plate (303). Accordingly, the bonding force between the backplate (302) and the cover plate (303) may be improved, and no gap may occur between the backplate (302) and the cover plate (303).

[0072] The pad portion (30) may include a cover plate hole (3031) that penetrates the cover plate (303). A back plate projection (3022) may be inserted into the cover plate hole (3031).

[0073] The pad portion (30) may include a backplate support surface (3023) and a backplate protrusion (3024) disposed on the backplate (302).

[0074] The backplate support surface (3023) may be positioned on the seating leg portion (103) of the torque member body (100). The backplate support surface (3023) may be positioned on the seating leg portion (103) and supported by the seating leg portion (103). A return portion (210) may be positioned between the backplate support surface (3023) and the seating leg portion (103). The backplate support surface (3023) may be supported by the return portion (210) and the seating leg portion (103). Accordingly, the pad portion (30) may be supported by the torque member (10). The seating leg portion (103) may be positioned approximately parallel to the backplate support surface (3023).

[0075] A plurality of backplate support surfaces (2023) may be arranged on the pad portion (30). According to one embodiment, the directions in which the plurality of backplate support surfaces (2023) extend may intersect each other. More specifically, the directions in which the backplate support surfaces (2023) extend may face the center of the rotating rotor.

[0076] A line perpendicular to the backplate support surface (3023) can be defined as the normal (NL). A tangent to the rotational direction of the rotating rotor adjacent to the backplate support surface (3023) can be defined as the rotational tangent (RT). The angle between the normal (NL) and the rotational tangent (RT) can be defined as the angle of attack (AA). The angle of attack (AA) may represent an absolute value.

[0077] The angle of attack (AA) may vary depending on the shape of the backplate support surface (3023) or the direction in which the backplate support surface (3023) extends. The angle of attack (AA) may be set to approximately 0 to 30 degrees. According to one embodiment, the angle of attack (AA) may be set to approximately 0 to 20 degrees. More specifically, the angle of attack (AA) may be set to approximately 0 to 10 degrees. The angle of attack (AA) may be provided as 0 degrees.

[0078] As the angle of attack (AA) approaches 0 degrees, the direction in which the friction pad (301) intends to move due to friction between the rotor or disk and the friction pad (301) may become closer to a direction perpendicular to the seating leg portion (103). Accordingly, the pad portion (30) may not move relative to the torque member (10). Specifically, the pad portion (30) may not move upward (e.g., +Z-axis direction) or downward (e.g., -Z-axis direction) relative to the torque member (10).

[0079] As the amount of movement of the pad portion (30) relative to the torque member (10) is reduced or does not move, uneven wear may not occur on the pad portion (30). Additionally, the rotational force generated on the pad portion (30) is reduced or minimized, thereby minimizing the loss of braking force.

[0080] The backplate protrusion (3024) can be placed in the seating groove (101) of the torque member body (100). The backplate protrusion (3024) can move along the direction in which the seating groove (101) is formed (e.g., the X-axis direction). As the backplate protrusion (3024) is placed in the seating groove (101), the pad portion (30) can be prevented from detaching from the torque member (10). A return portion (210) can be placed between the backplate protrusion (3024) and the seating groove (101).

[0081] A seating projection (102) may be disposed on the upper side (e.g., in the +Z-axis direction) of the backplate protrusion (3024). The seating projection (102) may protrude from the torque member body (100) and prevent the backplate protrusion (3024) from detaching from the torque member (10).

[0082] The pad portion (30) may further include a backplate recess (3025) disposed on the backplate (302). A description of the backplate recess (3025) will be provided later in conjunction with the description of FIGS. 16 to 21.

[0084] FIG. 5 is a front view of a first embodiment of a return unit disposed in a brake device according to the present invention, FIG. 6 is a perspective view of a first embodiment of a return unit according to the present invention, FIG. 7 is a front view of a second embodiment of a return unit disposed in a brake device according to the present invention, FIG. 8 is a perspective view of a second embodiment of a return unit according to the present invention, FIG. 9 is a front view of a third embodiment of a return unit disposed in a brake device according to the present invention, FIG. 10 is a perspective view of a third embodiment of a return unit according to the present invention, and FIG. 11 is an exploded perspective view of a third embodiment of a return unit according to the present invention.

[0085] Various embodiments of the return unit (210) are illustrated in FIGS. 5 to 11.

[0086] The return unit (210) will be described with reference to FIGS. 5 and FIGS. 6.

[0087] The return portion (210) may be positioned between the torque member (10) and the pad portion (30). According to one embodiment, the return portion (210) may be positioned between the torque member body (100) and the back plate (302). The return portion (210) may be positioned between the torque member body (100) and the back plate (302) to prevent play between the torque member body (100) and the back plate (302).

[0088] The return portion (210) contacts the back plate (302) and can apply the elastic force generated in the return portion (210) to the back plate (302).

[0089] According to one embodiment, the elastic force generated in the return portion (210) can move the inner pad portion (31) in a second direction (e.g., -X-axis direction). The elastic force generated in the return portion (210) can move the outer pad portion (32) in a first direction (e.g., +X-axis direction). Accordingly, when braking of the vehicle is not required, the pad portion (30) moved by the piston portion (40) can be returned to its position before moving.

[0090] The return section (210) may include a pad liner (211) and a return spring (212).

[0091] The pad liner (211) can be placed between the torque member body (100) and the backplate (302).

[0092] The pad liner (211) may be provided in at least one or more ways. The pad liner (211) may be positioned to contact the inner pad portion (31) and the outer pad portion (32). The pad liner (211) may be connected by a pad liner connecting portion (2111).

[0093] The pad liner (211) may include a pad liner connecting part (2111), a pad liner locking part (2112), a pad liner sliding part (2113), a pad liner supporting part (2114), and a pad liner leg part (2115).

[0094] The pad liner catch portion (2112) may extend from the pad liner connection portion (2111). One side of the pad liner catch portion (2112) may be formed concavely (e.g., in the -Y axis direction). A seating projection (102) of the torque member body (100) may be inserted into the concave portion of the pad liner catch portion (2112).

[0095] The pad liner sliding portion (2113) may extend from the pad liner catch portion (2112). The pad liner sliding portion (2113) may protrude to one side (e.g., +Y-axis direction) and be formed concavely to the other side (e.g., -Y-axis direction). The protruding portion of the pad liner sliding portion (2113) may be inserted into the seating groove (101) of the torque member body (100). The backplate protrusion (3024) of the backplate (302) may be inserted into the concave portion of the pad liner sliding portion (2113). The backplate protrusion (3024) may move along the direction in which the pad liner sliding portion (2113) extends (e.g., X-axis direction). The pad liner stopper (2116) protrudes from the pad liner sliding portion (2113) and can come into contact with the pad portion (30). The pad liner stopper (2116) can prevent the pad portion (30) from coming off the return portion (210).

[0096] A return spring (212) may be disposed on the pad liner (211). The return spring (212) may include an integral return spring (213) and a combined return spring (214). In FIGS. 5 and 6, the integral return spring (213) is described.

[0097] The return spring (212) can be elastically deformed. The return spring (212) can come into contact with the pad portion (30) that has been moved by the piston portion (40) and return the pad portion (30) to its position before it was moved.

[0098] The integrated return spring (213) is formed integrally with the pad liner sliding portion (2113) and arranged to come into contact with the pad portion (30). As the pad portion (30) moves, the integrated return spring (213) can be elastically deformed, thereby generating an elastic force. The elastic force generated by the integrated return spring (213) is applied to the pad portion (30) to return the pad portion (30) to its position before movement.

[0099] The pad liner support portion (2114) may extend from the pad liner sliding portion (2113). The pad liner support portion (2114) may come into contact with the seating leg portion (103). The pad liner support portion (2114) may be positioned between the seating leg portion (103) and the backplate support surface (3023). The force transmitted from the backplate support surface (3023) to the pad liner support portion (2114) may be transmitted to the seating leg portion (103).

[0100] The seating leg portion (103), the pad liner support portion (2114), and the backplate support surface (3023) may be arranged so as to be approximately parallel to each other. The angle of attack (AA) may vary depending on the shape of the seating leg portion (103), the pad liner support portion (2114), and the backplate support surface (3023). As previously described, the angle of attack (AA) may be set to approximately 0 to 30 degrees. According to one embodiment, the angle of attack (AA) may be set to approximately 0 to 20 degrees. More specifically, the angle of attack (AA) may be set to approximately 0 to 10 degrees. As the magnitude of the angle of attack (AA) decreases, the loss of braking force of the vehicle may be reduced.

[0101] The pad liner leg portion (2115) may extend from the pad liner support portion (2114). The pad liner leg portion (2115) may be bent. The pad liner leg portion (2115) may be elastically deformed. The pad liner leg portion (2115) may press the pad portion (30) by contacting the lower portion (e.g., in the -Z axis direction) and / or the side portion (e.g., in the Y axis direction) of the pad portion (30).

[0102] As the pad liner leg portion (2115) presses the pad portion (30), the pad portion (30) can be induced to be placed at a set position.

[0103] The return unit (210) will be described with reference to FIGS. 7 and FIGS. 8. The same description as that of the return unit (210) shown in FIGS. 5 and FIGS. 6 may be omitted.

[0104] The space between the pad liner sliding portion (2113) and the pad liner support portion (2114) can be bent.

[0105] The bent portion between the pad liner sliding portion (2113) and the pad liner support portion (2114) can come into contact with the backplate protrusion (3024) and press the backplate protrusion (3024). As the backplate protrusion (3024) is pressed by the bent portion, the backplate (302) can be induced to move to a position where its position is set. Accordingly, the pad portion (30) can be induced to be placed at a position where its position is set. The bent portion can perform the function of the pad liner leg portion (2115).

[0106] The return unit (210) will be described with reference to FIGS. 9 to 11. Descriptions identical to those of the return unit (210) shown in FIGS. 5 to 8 may be omitted.

[0107] A combined return spring (214) may be placed in the pad liner sliding portion (2113). The combined return spring (214) may be fixed to the pad liner sliding portion (2113).

[0108] The return portion (210) may include a pad liner sliding portion hole (2113-1) that penetrates the pad liner sliding portion (2113). A combined return spring (214) may be positioned to penetrate the pad liner sliding portion hole (2113-1).

[0109] The combined return spring (214) may include a combined return spring body (2140), a combined return spring insertion member (2141), a combined return spring bending piece (2142), a combined return spring elastic part (2143), and a combined return spring stopper (2144).

[0110] The combined return spring body (2140) can be placed in the pad liner sliding part (2113).

[0111] The combined return spring insert member (2141) may be positioned on one side of the combined return spring body (2140) and positioned to penetrate the pad liner sliding part hole (2113-1). As the combined return spring insert member (2141) is positioned to penetrate the pad liner sliding part hole (2113-1), the combined return spring body (2140) may be fixed to the pad liner sliding part (2113).

[0112] The combined return spring bend (2142) can be positioned to wrap around the pad liner sliding part (2113). As the combined return spring bend (2142) is positioned to wrap around the pad liner sliding part (2113), the bonding force between the combined return spring (214) and the pad liner sliding part (2113) can be improved, and the combined return spring (214) can be fixed to the return part (210).

[0113] The combined return spring elastic part (2143) may be disposed on one side of the combined return spring body (2140). The combined return spring elastic part (2143) may be elastically deformed. As the combined return spring elastic part (2143) is elastically deformed, an elastic force may be generated. The combined return spring elastic part (2143) may come into contact with the pad part (30). The elastic force generated from the combined return spring elastic part (2143) is transmitted to the pad part (30) and can return the moving pad part (30) to its position before movement.

[0114] The combined return spring stopper (2144) may protrude from the combined return spring body (2140). The combined return spring stopper (2144) may come into contact with the pad portion (30). As the pad portion (30) comes into contact with the combined return spring stopper (2144), the pad portion (30) may be prevented from detaching from the return portion (210).

[0115] The return section (210) may further include a return pin (215). A description of the return pin (215) will be provided later in conjunction with the description of FIGS. 16 to 21.

[0117] FIG. 12 is a perspective view of a brake device according to a second embodiment of the present invention viewed from a first viewpoint, FIG. 13 is a perspective view of a brake device according to a second embodiment of the present invention viewed from a second viewpoint, FIG. 14 is an exploded perspective view of a brake device according to a second embodiment of the present invention, and FIG. 15 is a front view of a second embodiment of a pad portion according to the present invention.

[0118] Referring to FIGS. 12 to 15, the torque member (10) and the pad portion (30) will be described.

[0119] The torque member (10) may further include an inner torque column (110), an outer torque column (120), and a column bridge (130).

[0120] The inner torque column (110) and the outer torque column (120) may be positioned in the middle portion (e.g., in the Y-axis direction) of the torque member (10). The inner torque column (110) and the outer torque column (120) may protrude upward (e.g., in the +Z-axis direction) from the torque member body (100).

[0121] An inner torque column (110) and an outer torque column (120) may be disposed on the torque member (10). The inner torque column (110) and the outer torque column (120) may be formed integrally with the torque member body (100). Alternatively, the inner torque column (110) and the outer torque column (120) may be assembled or fixed to the torque member body (100).

[0122] The pad portion (30) can be supported by an inner torque column (110) and an outer torque column (120). The inner torque column (110) and the outer torque column (120) may include a seating groove (101), a seating projection (102), and a seating leg portion (103).

[0123] A column bridge (130) can connect an inner torque column (110) and an outer torque column (120). Accordingly, the stability of the inner torque column (110) and the outer torque column (120) can be improved.

[0124] A column bridge mounting portion (220) may be disposed on the inner surface of the caliper body (200). The column bridge mounting portion (220) may be formed concavely to correspond to the shape of the column bridge (130).

[0125] The return section (210) may be positioned between the inner torque column (110) and the inner pad section (31) or between the outer torque column (120) and the outer pad section (32). Accordingly, four return sections (210) may be positioned in the brake device (1).

[0126] The return section (210) may be the same as the return section (210) shown in FIGS. 5 to 11.

[0127] The pad portion (30) may include an inner pad portion (31) and an outer pad portion (32).

[0128] The inner pad portion (31) may include a first inner pad (311) and a second inner pad (312). The outer pad portion (32) may include a first outer pad (321) and a second outer pad (322).

[0129] Return portions (210) may be disposed on both sides of the first inner pad (311) and the first outer pad (321). Additionally, return portions (210) may be disposed on both sides of the second inner pad (312) and the second outer pad (322).

[0130] The angle of attack (AA) described with reference to FIG. 4 can also be applied to the brake device (1) shown in FIG. 12 to FIG. 15.

[0131] The piston portion (40) may include a first piston (41) and a second piston (42). The piston portion (40) may include two or more pistons.

[0132] The first piston (41) can move the first inner pad (311) by contacting the first inner pad (311).

[0133] The second piston (42) can move the second inner pad (312) by contacting it.

[0134] The angle of attack (AA) described with reference to FIG. 4 can be applied to the first inner pad (311), the second inner pad (312), the first outer pad (321), and the second outer pad (322).

[0136] FIG. 16 is a perspective view of a brake device according to a third embodiment of the present invention viewed from a first viewpoint, FIG. 17 is a perspective view of a brake device according to a third embodiment of the present invention viewed from a second viewpoint, FIG. 18 is an exploded perspective view of a brake device according to a third embodiment of the present invention, FIG. 19 is a cross-sectional view of a brake device according to a third embodiment of the present invention, FIG. 20 is a front view of a brake device according to a third embodiment of the present invention, and FIG. 21 is a front view of a third embodiment of a pad portion according to the present invention.

[0137] Referring to FIGS. 16 to 21, the torque member (10), return part (210), and pad part (30) will be described.

[0138] An inner return pin mounting portion (111) may be disposed in the inner torque column (110), and an outer return pin mounting portion (121) may be disposed in the outer torque column (120).

[0139] The return section (210) may further include a return pin (215). The return pin (215) may include an inner return pin (2151) and an outer return pin (2152).

[0140] The inner return pin (2151) can be placed in the inner return pin seating portion (111), and the outer return pin (2152) can be placed in the outer return pin seating portion (121).

[0141] The inner return pin (2151) may be positioned between the first inner pad (311) and the second inner pad (312). The inner return pin (2151) may contact the first inner pad (311) and the second inner pad (312) to support the first inner pad (311) and the second inner pad (312).

[0142] The outer return pin (2152) may be positioned between the first outer pad (321) and the second outer pad (322). The outer return pin (2152) may contact the first outer pad (321) and the second outer pad (322) to support the first outer pad (321) and the second outer pad (322).

[0143] The column return pin (2153) may be placed on the inner return pin (2151) and / or the outer return pin (2152). As the column return pin (2153) undergoes elastic deformation, an elastic force may be generated. The column return pin (2153) may contact the inner pad portion (31) and / or the outer pad portion (32) to apply an elastic force to the inner pad portion (31) and / or the outer pad portion (32).

[0144] The column return pin (2153) positioned on the inner return pin (2151) can apply elastic force to the inner pad portion (31) to move the inner pad portion (31) in a second direction (e.g., -X-axis direction).

[0145] The column return pin (2153) positioned on the outer return pin (2152) can apply elastic force to the outer pad portion (32) to move the outer pad portion (320) in a first direction (e.g., +X-axis direction).

[0146] The pad portion (30) may include a backplate recess (3025). According to one embodiment, the backplate recess (3025) may be disposed on the first inner pad (311), the second inner pad (312), the first outer pad (321), and the second outer pad (322) that contact the return pin (215).

[0147] The backplate concave portion (3025) can be provided as a concave groove in the backplate (302). As the backplate concave portion (3025) is positioned in the backplate (302), friction between the return pin (215) and the backplate (302) can be minimized. Additionally, the volume of the brake device (1) can be minimized.

[0148] The return portion (210) can be placed on both sides (e.g., in the Y-axis direction) of the pad portion (30).

[0149] The angle of attack (AA) described in conjunction with the description of FIGS. 4 to 15 may also be applied to the brake device (1) shown in FIGS. 16 to 21. The angle of attack (AA) described in conjunction with the description of FIGS. 4 to 15 may be applied to the first inner pad (311), the second inner pad (312), the first outer pad (321), and the second outer pad (322).

[0150] In this way, by minimizing the angle of attack (AA), the loss of braking force can be reduced and uneven wear of the pad portion (30) can be minimized.

[0152] The present invention has been described with reference to an embodiment illustrated in the drawings, but this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims. Explanation of the symbols

[0153] 1: Brake device 10: Torque member 100: Talk Member Body 101: Settlement Home 102: Settling projection 103: Settling leg section 104: Talk Member Hall 110: Inner Talk Column 111: Inner return pin seating area 120: Outer torque column 121: Outer return pin seating area 130: Column bridge 20: Caliper body part 200: Caliper body 201: Caliper body guide hole 202: Caliper body pressure part 210: Return section 211: Padliner 2111: Padliner connection part 2112: Padliner catch part 2113: Padliner sliding part 2113-1: Padliner sliding part hole 2114: Padliner support part 2115: Padliner leg part 2116: Padliner Stopper 212: Return Spring 213: Integrated return spring 214: Combined return spring 2140: Combined return spring body 2141: Combined return spring insert member 2142: Combined return spring bent piece 2143: Combined return spring elastic part 2144: Combined return spring stopper 215: Return pin 2151: Inner return pin 2152: Outer return pin 2153: Column return pin 220: Column bridge mounting part 30: Pad section 301: Friction pad 3011: Friction pad protrusion 302: Backplate 3021: Backplate hole 3022: Backplate protrusion 3023: Backplate support surface 3024: Backplate protrusion 3025: Backplate recess 303: Cover plate 3031: Cover plate hole 31: Inner pad section 311: 1st Inner Pad 312: 2nd Inner Pad 32: Outer pad section 321: First outer pad 322: 2nd outer pad 40: Piston part 41: 1st piston 42: 2nd piston 50: Caliper guide pin AA: Angle of attack RT: Rotation tangent NL: Normal

Claims

Claim 1 A brake device characterized by comprising: a torque member disposed on a rotor; a caliper body portion connected to the torque member and moving parallel to the torque member in a first direction or a second direction opposite to the first direction; a pad portion disposed on the first direction and the second direction of the rotor and seated on the torque member, having a backplate support surface facing the torque member, wherein the directions in which the backplate support surfaces extend intersect each other; and a piston portion disposed on the caliper body portion and moving in the first direction or the second direction to adjust the amount of pressure applied to the pad portion. Claim 2 In claim 1, the direction in which the backplate support surface extends is directed toward the rotational center of the rotor. Claim 3 A brake device according to claim 1, characterized in that the angle of attack formed by the normal to the backplate support surface and the tangent to the rotational direction of the rotor is set to within 10 degrees. Claim 4 A brake device according to claim 1, wherein the pad portion comprises: an outer pad portion disposed in the first direction of the rotor; and an inner pad portion disposed in the second direction of the rotor. Claim 5 A brake device according to claim 4, wherein the caliper body portion comprises: a caliper body; and a return portion disposed between the caliper body and the pad portion, which presses the outer pad portion in the first direction and presses the inner pad portion in the second direction. Claim 6 A brake device according to claim 5, wherein the return portion comprises a pad liner that is seated on the caliper body and disposed between the caliper body and the pad portion to reduce friction generated by the movement of the pad portion. Claim 7 A brake device according to claim 6, wherein the return portion comprises an integrated return spring that extends from the pad liner, presses the outer pad portion in the first direction, and presses the inner pad portion in the second direction. Claim 8 A brake device according to claim 6, wherein the return portion comprises a coupled return spring that is coupled to the pad liner, presses the outer pad portion in the first direction, and presses the inner pad portion in the second direction. Claim 9 A brake device according to claim 4, wherein the outer pad portion comprises a first outer pad and a second outer pad arranged spaced apart from each other, and the inner pad portion comprises a first inner pad and a second inner pad arranged spaced apart from each other. Claim 10 A brake device according to claim 9, wherein the torque member comprises: an outer torque column disposed between the first outer pad and the second outer pad; and an inner torque column disposed between the first inner pad and the second inner pad.

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