Pad clip for disc brake device and disc brake device

Abstract

To provide a pad clip which can suppress the formation of a clearance between a gripped plate part constituting the pad clip and a torque receiving face of the gripped plate part, and can reduce the drag torque of a pad.SOLUTION: A circumferential dimension X from a side face (first contact part) of a second fixed part 31 at the other side in a circumferential direction up to a side face of a griped plate part 28a at one side in the circumferential direction is made to be independently settable with respect to a circumferential dimension Y from a side face of the second fixed part 31 at the other side in the circumferential direction up to a side face (second contact part) of a first fixed part 30 at one side in the circumferential direction, the side face of the gripped plate part 28a at one side in the circumferential direction is made to face-contact with a torque receiving face irrespective of a deflective deformation which is generated at a main body part 26 on the basis of an elastic deformation of a turn-in side pressing part 27a.SELECTED DRAWING: Figure 12

Description

[Technical field]

[0001] The present invention relates to a pad clip for a disc brake device, and a disc brake device. [Background technology]

[0002] A disc brake device used for braking an automobile has a pair of pads arranged on both sides of a rotor that rotates with the wheels, and during braking, the pair of pads are pressed against both sides of the rotor. In such a disc brake device, the pads collide with the caliper that movably supports the pads during braking, and this can produce an abnormal noise called a clunking sound (a hitting sound or a clanging sound). The main cause of the clunking sound is that the direction of the moment acting on the pads during braking is opposite when braking forward and when braking backward.

[0003] In view of these circumstances, JP 2015-90201 A discloses a structure of a disc brake device in which the direction of the moment acting on the pad during braking is the same during forward braking and reverse braking in order to prevent the generation of clunking noise. Figures 20 to 23 show the disc brake device described in JP 2015-90201 A. The disc brake device 100 includes a caliper 101 and a pair of pads 102, 103 (an inner pad 102 and an outer pad 103).

[0004] The caliper 101 supports the inner pad 102 and the outer pad 103 so as to be movable in the axial direction (the up-down direction in FIG. 20, the front-back direction in FIG. 21). Such a caliper 101 includes an inner body 105 and an outer body 106 disposed on both axial sides of a rotor 104 (see FIG. 20) that rotates together with the wheel, rotation-in side and rotation-out side connectors 107, 108 that connect both circumferential end portions of the inner body 105 and the outer body 106, and an intermediate connector 109 that connects circumferential intermediate portions of the inner body 105 and the outer body 106. Unless otherwise specified, the axial direction, circumferential direction, and radial direction refer to the axial direction, circumferential direction, and radial direction of the rotor 104.

[0005] Each of the inner body 105 and the outer body 106 includes a pin 110 and a guide groove 111. Specifically, each of the inner body 105 and the outer body 106 includes a pin 110 at a radially inner end of one circumferential side portion. The pair of pins 110 are arranged coaxially with each other. Each of the inner body 105 and the outer body 106 includes a guide wall portion 112 that protrudes in the axial direction on an axially inner surface of the other circumferential side portion. A guide groove 111 that opens on the axially inner surface and one circumferential side surface is provided in a radial intermediate portion of the guide wall portion 112. In the illustrated example, the one circumferential side corresponds to the rotation-in side when the vehicle moves forward, and the other circumferential side corresponds to the rotation-out side when the vehicle moves forward.

[0006] Each of the inner pad 102 and the outer pad 103 includes a lining 113 and a back plate 114 supporting the back surface of the lining 113. The back plate 114 has a through hole 115 on the radially inner side of one circumferential side (the end portion on the inlet side), and has a convex ear 116 that protrudes in the circumferential direction on the side surface on the other circumferential side (the side portion on the outlet side).

[0007] In order to support the above-mentioned inner pad 102 and outer pad 103 axially movably relative to the caliper 101, a pin 110 is inserted in the axial direction into a through hole 115 provided in a back plate 114. As a result, one circumferential side of each of the inner pad 102 and outer pad 103 is supported axially movably relative to the inner body 105 and outer body 106, respectively, and the brake tangential force F1 acting on the inner pad 102 and outer pad 103 during forward braking is supported by the pin 110. Also, an ear 116 provided on the back plate 114 is engaged with the guide groove 111 axially movably.

[0008] The rotation-inlet connecting portion 107 has a pair of torque receiving surfaces 117 on a surface facing the intermediate connecting portion 109 in the circumferential direction. Each of the pair of torque receiving surfaces 117 abuts against a torque transmission surface 118 provided on the radially outer end of one circumferential side of the back plate 114 during reverse braking, thereby supporting the brake tangential force F2 acting on each of the inner pad 102 and the outer pad 103.

[0009] The disc brake device 100 includes a pad clip 119 to prevent rattling of the inner pad 102 and the outer pad 103 when not braking.

[0010] The pad clip 119 is made of a metal plate and includes a main body 120, a pair of inlet side pressing portions 121a, 121b, a pair of outlet side pressing portions 122a, 122b, and a pair of clamped plate portions 123a, 123b.

[0011] The main body portion 120 has a base plate portion 124, and a first fixing portion 125 and a second fixing portion 126 arranged on both circumferential sides of the base plate portion 124. The first fixing portion 125 has a first standing plate portion 127 and a first push-up plate portion 128. The first standing plate portion 127 elastically presses the rotation-in side connecting portion 107 toward one circumferential side, and the first push-up plate portion 128 elastically presses the rotation-in side connecting portion 107 toward the radially outward side. The second fixing portion 126 elastically clamps the intermediate connecting portion 109 from both circumferential sides.

[0012] The insertion side pressing portions 121a, 121b are provided in the circumferential middle portion of the pad clip 119, and press one circumferential side portion of the outer circumferential edge portion of the back plate 114 that constitutes the inner pad 102 and the outer pad 103 radially inward.

[0013] Output side pressing part 122a , 122b is provided at the other circumferential end of the pad clip 119 and presses the other circumferential side of the outer circumferential edge of the back plate 114 that constitutes the inner pad 102 and the outer pad 103 radially inward.

[0014] The clamped plate parts 123a and 123b are each formed in a flat plate shape and are arranged on both sides in the axial direction of the first fixed part 125. The clamped plate parts 123a and 123b and the first standing plate part 127 constituting the first fixed part 125 are connected over almost the entire width in the radial direction to form one flat plate. In other words, of the single flat plate, the axial middle part is the first standing plate part 127, and the axial both sides are the clamped plate parts 123a and 123b. The clamped plate parts 123a and 123b are also arranged between the torque receiving surface 117 provided on the inlet side connecting part 107 and the torque transmission surface 118 provided on the back plate 114 constituting the inner pad 102 and the outer pad 103.

[0015] During braking, the disc brake device 100 generates moments in the following directions on the inner pad 102 and the outer pad 103. Hereinafter, a description will be given with reference to FIG. During forward braking, as shown in Fig. 23(A), a brake tangential force F1 acting toward the other circumferential side (the left side in Fig. 23, the rotation side) acts on the center A of the friction surface of the lining 113 constituting the inner pad 102 (and the outer pad 103). Then, the inner pad 102 (and the outer pad 103) moves slightly toward the other circumferential side, and the brake tangential force F1 is supported by engaging the through hole 115 provided radially inward from the line of action of the brake tangential force F1 with the pin 110. Therefore, during forward braking, a moment M1 acting to rotate the inner pad 102 (and the outer pad 103) counterclockwise acts on the inner pad 102 (and the outer pad 103).

[0016] In contrast, during reverse braking, as shown in Fig. 23B, a brake tangential force F2 directed toward one circumferential side (the right side in Fig. 23, the rotation side) acts on the center A of the friction surface of the lining 113. Then, the inner pad 102 (and the outer pad 103) moves slightly toward one circumferential side, and the torque transmission surface 118 provided on one circumferential side of the back plate 114 radially outward from the line of action of the brake tangential force F2 abuts against the torque receiving surface 117 via the clamped plate portion 123a (123b), thereby supporting the brake tangential force F2. Therefore, during reverse braking, a moment M2 in the same direction as the moment M1 acts on the inner pad 102 (and the outer pad 103) to rotate the inner pad 102 (and the outer pad 103) counterclockwise.

[0017] As described above, according to the disc brake device 100 described in JP 2015-90201 A, the directions of the moments M1, M2 acting on the inner pad 102 and the outer pad 103 during forward braking and reverse braking can be made consistent. Therefore, even when forward braking and reverse braking are repeated, the attitudes of the inner pad 102 and the outer pad 103 can be maintained in a state in which they are rotated counterclockwise. Therefore, since the attitudes of the inner pad 102 and the outer pad 103 do not need to be changed, the generation of clunking noise can be suppressed.

[0018] Furthermore, the pressing parts 121a, 121b, 122a, 122b on the inlet and outlet sides of the pad clip 119 press both circumferential sides of the back plate 114 constituting the inner pad 102 and the outer pad 103 inward in the radial direction. Therefore, in a non-braking state, the radially outer side of the inner circumferential surface of the through hole 115 can be abutted against the radially outer end of the outer circumferential surface of the pin 110, and the radially inner side of the ear 116 can be abutted against the radially inner side of the guide groove 111. Therefore, even in a non-braking state, the posture of the inner pad 102 and the outer pad 103 can be stabilized, and the occurrence of brake squeal can be suppressed. In addition, the clamped plate parts 123a, 123b are arranged between the torque receiving surface 117 and the torque transmitting surface 118, so that rusting between the torque receiving surface 117 and the torque transmitting surface 118 can be prevented. [Prior art documents] [Patent documents]

[0019] [Patent Document 1] JP 2015-90201 A Summary of the Invention [Problem to be solved by the invention]

[0020] The conventional pad clip 119 described in JP 2015-90201 A has a first upright portion 127 and clamped plate portions 123a, 123b each provided within a single flat plate, and the magnitude of the clamping margin of the first upright portion 127 relative to the other circumferential side surface of the rotation-in side connecting portion 107 is the same as the magnitude of the clamping margin of the clamped plate portions 123a, 123b relative to the torque-receiving surface 117.

[0021] In the main body 120 constituting the pad clip 119, there is a possibility that a bending deformation that makes the radially outer side convex occurs based on the elastic deformation of the turn-in side pressing parts 121a, 121b when the inner pad 102 and the outer pad 103 are assembled to the caliper 101. For this reason, when the first standing plate part 127 moves away from the turn-in side connecting part 107 to the other circumferential side due to such a bending deformation of the pad clip 119, there is a possibility that a gap will occur between the clamped plate parts 123a, 123b and the torque receiving surface 117.

[0022] If a gap occurs between the clamped plate parts 123a, 123b and the torque receiving surface 117, the clearance between the torque transmission surface 118 and the clamped plate parts 123a, 123b will be reduced. As a result, when the braking force is released, the frictional resistance generated between the torque transmission surface 118 and the clamped plate parts 123a, 123b will increase, and the drag torque of the inner pad 102 and the outer pad 103 may increase.

[0023] The present invention has been made to solve the above-mentioned problems, and aims to provide a pad clip for a disc brake device and a disc brake device that can prevent a gap from occurring between the clamped plate portion that constitutes the pad clip and the torque receiving surface, thereby reducing the drag torque of the pad. [Means for solving the problem]

[0024] A pad clip for a disc brake device according to one embodiment of the present invention is made of a metal plate, is arranged at a distance from one another in the circumferential direction, and is attached between a pair of connecting parts that respectively connect the inner body and the outer body in the axial direction to elastically press against the pad, and comprises a main body part, a pressing part, and a clamped plate part. The main body has a fixing portion on each of both circumferential sides, and is elastically supported between the pair of connecting portions with each of the fixing portions engaged with the connecting portions. The pressing portion presses an outer peripheral edge portion of the pad radially inward. The clamped plate portion is disposed between a torque receiving surface provided on the side surface on the other circumferential side of the connecting portion arranged on one circumferential side, and a radially outer portion of the side surface on one circumferential side of the pad. In one embodiment of the pad clip for a disc brake device of the present invention, the circumferential dimension from a first contact portion, which is one of the fixing portions arranged on the other circumferential side and contacts the side surface on one circumferential side of the connecting portion arranged on the other circumferential side, to the side surface on one circumferential side of the clamped plate portion can be set independently from the circumferential dimension from the first contact portion to a second contact portion, which is one of the fixing portions arranged on the one circumferential side and contacts the side surface on the other circumferential side of the connecting portion arranged on the one circumferential side. Furthermore, regardless of the bending deformation that occurs in the main body due to the elastic deformation of the pressing portion, the side surface on one circumferential direction of the clamped plate portion comes into surface contact with the torque receiving surface.

[0025] In other words, the magnitude of the clamping margin of the fixing part, which is located on one circumferential side, relative to the connecting part, which is located on one circumferential side, and the magnitude of the clamping margin of the clamped plate part relative to the torque receiving surface can be set separately, and the clamping margin of the clamped plate part is set so that the value of the clamping margin of the clamped plate part is not positive (no gap is generated between the clamped plate part and the torque receiving surface) regardless of the bending deformation occurring in the main body part.

[0026] In a pad clip for a disc brake device according to one embodiment of the present invention, the clamping margin of the clamped plate portion relative to the torque receiving surface can be made larger than the clamping margin of the fixing portion, which is arranged on one circumferential side, relative to the side surface on the other circumferential side of the connecting portion, which is arranged on one circumferential side.

[0027] In one embodiment of the pad clip for a disc brake device of the present invention, in a free state (before being attached between a pair of the connecting portions), the circumferential position of the side surface on one circumferential side of the clamped plate portion and the circumferential position of the second contact portion can be made different from each other.

[0028] In the pad clip for a disc brake device according to one aspect of the present invention, a notch can be formed axially between the clamped plate portion and the fixing portion arranged on one circumferential side. In this case, the clamped plate portion is connected to the fixed portion arranged on one circumferential side via a connection portion formed by forming the cutout portion, and in a free state, it can be inclined in a direction toward one circumferential side as it moves away from the connection portion in the radial or axial direction. Alternatively, the clamped plate portion can be connected to the circumferential middle portion of the main body portion via a connection portion formed by forming the cutout portion. Furthermore, when the clamped plate portion is connected to the circumferential middle portion of the main body portion via the connection portion, the clamped plate portion can also be inclined in a free state in a direction toward one circumferential side as it moves away from the connection portion in the radial or axial direction.

[0029] In the pad clip for a disc brake device according to one aspect of the present invention, in a free state, the inclination angle of the clamped plate portions with respect to the second contact portion can be set to be greater than 0 degrees and equal to or less than 20 degrees.

[0030] In the pad clip for a disc brake device according to one aspect of the present invention, the clamped plate portions can be provided on both axial sides of the fixing portion arranged on one circumferential side.

[0031] In the pad clip for a disc brake device according to one aspect of the present invention, the pressing portion can press the pad in the axial direction away from the rotor.

[0032] A disc brake device according to one embodiment of the present invention comprises an inner body and an outer body arranged on either side of a rotor in the axial direction, a caliper having a pair of connecting parts that respectively connect the inner body and the outer body in the axial direction, a pad supported so as to be able to move in the axial direction relative to the caliper, and a pad clip made of a metal plate that is attached between the pair of connecting parts and elastically presses the pad, and the pad clip for disc brake devices according to one embodiment of the present invention can be used as the pad clip. Effect of the Invention

[0033] According to the present invention, it is possible to realize a pad clip for a disc brake device and a disc brake device that can prevent a gap from occurring between the clamped plate portion that constitutes the pad clip and the torque receiving surface, thereby reducing the drag torque of the pad. [Brief description of the drawings]

[0034] [Figure 1] FIG. 1 is a front view showing a disc brake device to which a pad clip according to a first embodiment is attached. [Diagram 2] FIG. 2 is a plan view showing a disc brake device to which a pad clip according to a first example of the embodiment is attached. [Diagram 3] FIG. 3 is a perspective view showing a disc brake device to which a pad clip according to a first example of the embodiment is attached. [Figure 4] FIG. 4 is a cross-sectional view taken along line AA in FIG. [Diagram 5] FIG. 5 is a cross-sectional view taken along line BB in FIG. [Figure 6] FIG. 6 is a partially enlarged view of FIG. [Figure 7] FIG. 7 is a partially enlarged view of FIG. [Figure 8] FIG. 8 is a plan view of the pad clip according to the first example of the embodiment, viewed from the radially outer side. [Figure 9]FIG. 9 is a side view of the pad clip according to the first example of the embodiment, as viewed from the outside in the axial direction. [Figure 10] FIG. 10 is an end view of the pad clip according to the first example of the embodiment, viewed from one circumferential side. [Figure 11] FIG. 11 is a perspective view of a pad clip according to a first example of the embodiment, as viewed from the radially outer side and from one circumferential side. [Figure 12] FIG. 12 is a cross-sectional view taken along line CC in FIG. [Figure 13] FIG. 13 is a cross-sectional view taken along line DD in FIG. [Figure 14] FIG. 14 is a diagram showing a second example of the embodiment, and corresponds to FIG. [Figure 15] FIG. 15 is a diagram showing a second example of the embodiment, and corresponds to FIG. [Figure 16] FIG. 16 is a diagram showing a second example of the embodiment, and corresponds to FIG. [Figure 17] FIG. 17 is a diagram showing a second example of the embodiment, and corresponds to FIG. [Figure 18] FIG. 18 is a diagram showing a second example of the embodiment, and corresponds to FIG. [Figure 19] FIG. 19 is a diagram corresponding to FIG. 8, showing a modification of the second example of the embodiment. [Figure 20] FIG. 20 is a plan view showing a disc brake device of a conventional structure. [Figure 21] FIG. 21 is a cross-sectional view taken along line EE in FIG. [Figure 22] Figure 22 shows a pad clip of a conventional structure, where (A) is a plan view seen from the radial outside, (B) is a side view seen from the axial outside, and (C) is an end view seen from one circumferential side. [Diagram 23] FIG. 23 is a front view showing an inner pad taken out from a disc brake device of a conventional structure, (A) showing a state in which braking is applied when moving forward, and (B) showing a state in which braking is applied when moving backward. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0035] [First Example of Implementation] A first example of the embodiment will be described with reference to FIGS. 1 to 13. FIG.

[0036] The pad clip 5 of this embodiment has a structure that makes it difficult for gaps to form between the clamped plate portions 28a, 28b and the torque receiving surface 19 even when the main body portion 26 is bent and deformed.

[0037] Before describing the structure of the pad clip 5 of this embodiment in detail, the overall structure of the disc brake device 1 will be described below with reference to Figures 1 to 5. Next, the structure of each part of the pad clip 5 will be described with reference to Figures 6 to 13.

[0038] In the following description, unless otherwise specified, the axial direction, circumferential direction, and radial direction refer to the axial direction, circumferential direction, and radial direction of the disk-shaped rotor 7 (see FIG. 2) that rotates together with the wheel. The front-back direction in FIG. 1, FIG. 4 to FIG. 7, FIG. 9, FIG. 12, and FIG. 13, the up-down direction in FIG. 2, and FIG. 8, and the left-right direction in FIG. 10 correspond to the axial direction, and the side closer to the rotor 7 in the axial direction is referred to as the axial inner side, and the side farther from the rotor 7 in the axial direction is referred to as the axial outer side. In addition, the left-right direction in FIG. 1, FIG. 2, FIG. 4 to FIG. 9, FIG. 12, and FIG. 13, and the front-back direction in FIG. 10 correspond to the circumferential direction, and the right side in FIG. 1, FIG. 2, FIG. 4 to FIG. 9, FIG. 12, and FIG. 13, and the front side in FIG. 10 are referred to as the one circumferential side, and the left side in FIG. 1, FIG. 2, FIG. 4 to FIG. 9, FIG. 12, and FIG. 13, and the back side in FIG. 10 are referred to as the other circumferential side, respectively. In this example, one circumferential side is the rotation-in side when the vehicle moves forward and the rotation-out side when the vehicle moves backward, and the other circumferential side is the rotation-out side when the vehicle moves forward and the rotation-in side when the vehicle moves backward. In addition, the up-down direction in Fig. 1, Fig. 4 to Fig. 7, Fig. 9, Fig. 10, Fig. 12 and Fig. 13 and the front-back direction in Fig. 2 and Fig. 8 correspond to the radial direction, respectively, and the upper side in Fig. 1, Fig. 4 to Fig. 7, Fig. 9, Fig. 10, Fig. 12 and Fig. 13 and the front side in Fig. 2 and Fig. 8 correspond to the radial outside, respectively, and the lower side in Fig. 1, Fig. 4 to Fig. 7, Fig. 9, Fig. 10, Fig. 12 and Fig. 13 and the back side in Fig. 2 and Fig. 8 correspond to the radial inside, respectively. In addition, the rotation-in side refers to the side where the rotor 7 enters the caliper 2, and the rotation-out side refers to the side where the rotor 7 exits the caliper 2.

[0039] [Explanation of the structure of the disc brake device] The disc brake device 1 in this example is an opposed-piston type disc brake device used for braking an automobile, and comprises a caliper 2, a pair of pads 3, 4 (inner pad 3, outer pad 4), and a pair of pad clips 5, 6 that elastically press the pair of pads 3, 4.

[0040] Caliper The caliper 2 supports the inner pad 3 and the outer pad 4 so that they can move axially, and is integrally formed by subjecting a material such as an aluminum alloy or an iron-based alloy to a casting process or the like.

[0041] The caliper 2 comprises an inner body 8 and an outer body 9 arranged on either side of the rotor 7, inlet side and outlet side connecting portions 10, 11 which connect the circumferential ends of the inner body 8 and the outer body 9, respectively, and an intermediate connecting portion 12 which connects the circumferential middle portions of the inner body 8 and the outer body 9, respectively.

[0042] Inner body and outer body The inner body 8 has a plurality of inner cylinders 13 (five in the illustrated example), and the outer body 9 has outer cylinders 14 in the same number as the inner cylinders 13. An inner piston (not shown) is fitted inside the inner cylinder 13 so as to be displaceable in the axial direction, and an outer piston (not shown) is fitted inside the outer cylinder 14 so as to be displaceable in the axial direction. Such a caliper 2 is supported and fixed to a knuckle of a suspension device by a pair of mounting seats 15 provided on the inner body 8, in a state in which it covers the rotor 7 from the radial outside.

[0043] Each of the inner body 8 and the outer body 9 is provided with a pin 16 on a radially inner portion of one circumferential side portion. The pair of pins 16 are supported and fixed (fixed) to each other coaxially. The tip portions of the pair of pins 16 protrude from the axially inner surfaces of the inner body 8 and the outer body 9 facing each other, and face both axially opposite sides of the rotor 7 with a gap therebetween. Of the pair of pins 16, the portions protruding from the axially inner surfaces of the inner body 8 and the outer body 9 are substantially columnar, and have a cylindrical outer peripheral surface shape. During forward braking, such pins 16 engage with through holes 23 (described later) provided in each of the inner pad 3 and the outer pad 4, and support the brake tangential force F1 acting on the inner pad 3 and the outer pad 4.

[0044] The inner body 8 and the outer body 9 have guide walls 17 that protrude in the axial direction on the opposing axially inner surfaces of the other circumferential side portions. A guide groove 18 is provided in a radial intermediate portion of the guide wall 17, the guide groove 18 opening to the axially inner surface and to one circumferential side surface.

[0045] 《Connection part》 The rotation-in side connecting portion 10 axially connects one circumferential side portion of each of the inner body 8 and the outer body 9. The rotation-out side connecting portion 11 axially connects the other circumferential side portion of each of the inner body 8 and the outer body 9. The intermediate connecting portion 12 is disposed between the rotation-in side connecting portion 10 and the rotation-out side connecting portion 11 in the circumferential direction, and connects the circumferential intermediate portions of each of the inner body 8 and the outer body 9 in the axial direction.

[0046] The intermediate connecting portion 12 is disposed circumferentially spaced apart from each of the inlet connecting portion 10 and the outlet connecting portion 11. In this example, the inlet connecting portion 10 and the intermediate connecting portion 12 correspond to a pair of connecting portions as described in the claims.

[0047] The rotation-inlet connecting part 10 has a pair of flat torque receiving surfaces 19 on the other circumferential side that faces the intermediate connecting part 12 in the circumferential direction. The torque receiving surfaces 19 exist on an imaginary plane perpendicular to the brake tangential force. During reverse braking, the torque receiving surfaces 19 come into contact with torque transmission surfaces 24 (described later) provided on the inner pad 3 and the outer pad 4, respectively, to support the brake tangential force F2 acting on the inner pad 3 and the outer pad 4, respectively.

[0048] <Inner pad and outer pad> Each of the inner pad 3 and the outer pad 4 includes a lining (friction material) 20 and a metal back plate (pressure plate) 21 that supports the back surface of the lining 20. In this example, the shapes of the ends on both circumferential sides of the back plate 21 of each of the inner pad 3 and the outer pad 4 are asymmetrical with respect to the circumferential direction.

[0049] Specifically, the back plate 21 has a protruding portion 22 that protrudes in the circumferential direction from the lining 20 at a radially inner portion of an end portion (inlet end portion) on one circumferential side. The protruding portion 22 has a substantially rectangular through hole 23 that penetrates in the axial direction at a portion located radially inner than the line of action of the brake tangential force acting during braking (friction surface center point A). In addition, the back plate 21 has a flat torque transmission surface 24 that faces the torque receiving surface 19 in the circumferential direction at a radially outer end portion of the side surface on one circumferential side that is located radially outer than the line of action of the brake tangential force acting during braking.

[0050] The back plate 21 has a convex ear 25 protruding toward the other circumferential side at a radially intermediate portion of the other circumferential end (the rotation side end). The ear 25 supports the moment (rotational force) acting on the inner pad 3 and the outer pad 4 by abutting its radially inner surface against the radially inner surface of the guide groove 18 during braking (forward braking and reverse braking).

[0051] In order to support each of the inner pad 3 and the outer pad 4 axially movable relative to the caliper 2, a pin 16 supported on each of the inner body 8 and the outer body 9 is loosely inserted in the axial direction into a through hole 23 provided in each of the back plates 21 of the inner pad 3 and the outer pad 4. Also, a lug 25 provided on each of the back plates 21 of the inner pad 3 and the outer pad 4 is engaged with a guide groove 18 provided in each of the inner body 8 and the outer body 9 so as to be axially movable. In this state, a torque transmission surface 24 provided on one circumferential side of the back plate 21 faces a torque receiving surface 19 provided on the rotation-in side connecting part 10 in the circumferential direction.

[0052] <Pad Clip> The disc brake device 1 of this embodiment includes two pad clips 5 and 6.

[0053] The pad clip 5 arranged on one circumferential side corresponds to the pad clip described in the claims. The pad clip 5 presses the one circumferential side portions of the outer peripheral edge portions of the back plate 21 of each of the inner pad 3 and the outer pad 4 toward the radially inward direction by a pair of rotation-side pressing portions 27a, 27b.

[0054] The pad clip 6 arranged on the other circumferential side presses the other circumferential side portions of the outer peripheral edges of the back plates 21 of the inner pad 3 and the outer pad 4 respectively radially inward with a pair of outlet side pressing portions 47a, 47b.

[0055] <Moment acting during braking> During braking, the disc brake device 1 of this embodiment generates a moment similar to that of the structure shown in FIG. 23, on each of the inner pad 3 and the outer pad 4. During forward braking, as shown in Fig. 4, a brake tangential force F1 acting toward the other circumferential side (the left side in Fig. 4, the rotation side) acts on the friction surface center point A of the lining 20. Then, the through hole 23 and the pin 16 engage with each other to support the brake tangential force F1 (a so-called pull anchor structure). Therefore, during forward braking, a moment M1 acts on the inner pad 3 and the outer pad 4 in a direction that presses the other circumferential side portion radially inward. The friction surface center point A is the centroid of the friction surface, and is determined by the piston diameter and arrangement, etc.

[0056] In contrast, during reverse braking, a brake tangential force F2 acting in one circumferential direction (the right side in FIG. 4, the rotation side) acts on the center A of the friction surface of the lining 20. The torque transmission surface 24 is brought into contact with the torque receiving surface 19 via the clamped plate portions 28a and 28b (described later) constituting the pad clip 5, to support the brake tangential force F2 (a so-called push anchor structure). Therefore, during reverse braking, a moment M2 acts on the inner pad 3 and the outer pad 4 in a direction (the same direction as the moment M1) that pushes the other circumferential side portions radially inward.

[0057] Therefore, according to the disc brake device 1 of this embodiment, the directions of the moments M1, M2 acting on the inner pad 3 and the outer pad 4, respectively, during forward braking and reverse braking can be made the same. Therefore, even when forward braking and reverse braking are repeated, such as when parking the vehicle in a garage, the respective positions of the inner pad 3 and the outer pad 4 can be maintained in a counterclockwise rotated state. Therefore, since the respective positions of the inner pad 3 and the outer pad 4 do not need to be changed, the generation of clunking noise can be suppressed.

[0058] [Detailed structure of pad clip] The structure of each part of the pad clip 5 of this embodiment will be described below with reference to Figs.

[0059] The pad clip 5 is formed by bending a single elastic and corrosion-resistant metal plate such as a stainless steel plate. The pad clip 5 is disposed in the circumferential portion between the entrance connecting portion 10 and the intermediate connecting portion 12.

[0060] The pad clip 5 includes a main body portion 26, a pair of insertion side pressing portions 27a, 27b, and a pair of clamped plate portions 28a, 28b. The pad clip 5 has a shape symmetrical with respect to the axial direction.

[0061] <Main body> The main body portion 26 has the function of elastically supporting the pad clip 5 between the insertion side connecting portion 10 and the intermediate connecting portion 12.

[0062] The main body 26 includes a base plate 29 disposed in the circumferential middle portion, and a first fixing portion 30 and a second fixing portion 31 disposed on both circumferential sides. As shown in Fig. 6, the main body 26 is elastically supported in the circumferential portion between the rotation-insertion side connecting portion 10 and the intermediate connecting portion 12 with the first fixing portion 30 engaged with the rotation-insertion side connecting portion 10 and the second fixing portion 31 engaged with the intermediate connecting portion 12.

[0063] <<Board>> Base plate portion 29 has a crank shape when viewed in the axial direction, and includes a flat plate portion 32, a hanging plate portion 33 bent radially inward (approximately 70 degrees in the illustrated example) from one circumferential end of flat plate portion 32, and a circumferential extension portion 34 extending radially inward from the radially inner end of hanging plate portion 33. Flat plate portion 32 and circumferential extension portion 34 are disposed approximately parallel to each other.

[0064] 《First fixed part》 The first fixing portion 30 is provided at an axially intermediate portion of one circumferential end of the main body portion 26, and is connected to a circumferential extending portion 34 constituting the base plate portion 29. The first fixing portion 30 has a substantially L-shape when viewed in the axial direction, and engages with the other circumferential side portion of the axially intermediate portion of the rotation-insertion side connecting portion 10 as shown in Fig. 6. When the pad clip 5 is in an assembled state, the first fixing portion 30 elastically presses the rotation-insertion side connecting portion 10 toward one circumferential side and toward the radially outward side.

[0065] The first fixing portion 30 has a first standing plate portion 35 and a first push-up plate portion 36.

[0066] The first upright portion 35 extends so as to bend radially outward (approximately 70 degrees in the illustrated example) from one circumferential end of the circumferential extending portion 34. The first upright portion 35 is disposed approximately parallel to the hanging plate portion 33.

[0067] The first standing portion 35 contacts the other circumferential side surface of the axially intermediate portion of the rotation-inlet side coupling portion 10. Therefore, the one circumferential side surface of the first standing portion 35 corresponds to the second contact portion described in the claims. Specifically, the first standing portion 35 contacts the other circumferential side surface of the rotation-inlet side coupling portion 10, at a portion between a pair of torque receiving surfaces 19.

[0068] The first upright portion 35 has an inverted U-shape when viewed in the circumferential direction, and has a pair of upright pieces 37a, 37b arranged at a distance in the axial direction, and a connecting portion 38 that axially connects the radially outer ends of the pair of upright pieces 37a, 37b.

[0069] The first push-up plate 36 is formed by further extending the circumferential extension portion 34 toward one circumferential side. In other words, the first push-up plate 36 is formed by bending down, toward one circumferential side, an inner portion of a substantially U-shaped slit formed in the axial middle portion of the first standing plate portion 35. The first push-up plate 36 abuts against the radially inner surface of the axial middle portion of the rotation-side connecting portion 10.

[0070] 《Second fixed part》 The second fixing portion 31 is provided at the other circumferential end of the main body portion 26, and is connected to the other circumferential end of the flat plate portion 32. The second fixing portion 31 has a substantially L-shape when viewed in the axial direction, and engages with one circumferential side portion of the axially intermediate portion of the intermediate connecting portion 12, as shown in Fig. 6. The second fixing portion 31 elastically presses the intermediate connecting portion 12 toward the other circumferential side, and also elastically presses it radially outward.

[0071] The second fixing portion 31 has a second standing plate portion 39 and a second lifting plate portion 40.

[0072] The second standing plate portion 39 extends from the end portion on the other circumferential side of the flat plate portion 32 so as to bend radially inward. The second standing plate portion 39 contacts a side surface on one circumferential side of the axially intermediate portion of the intermediate connecting portion 12. Therefore, the side surface on the other circumferential side of the second standing plate portion 39 corresponds to the first contact portion described in the claims. A bent portion 41 is provided on the radially outer portion of the axially intermediate portion of the second standing plate portion 39, which is formed by bending an inner portion of a substantially U-shaped slit toward the other circumferential side. The bent portion 41 elastically presses the side surface on one circumferential side of the intermediate connecting portion 12 toward the other circumferential side.

[0073] The second push-up plate portion 40 extends from the radially inner end portion of the second standing plate portion 39 toward the other circumferential side, and abuts against the radially inner surface of the axially intermediate portion of the intermediate connecting portion 12.

[0074] <Pressing part> The rotation-in side pressing portions 27a, 27b have the function of pressing the inner pad 3 and the outer pad 4 to stabilize the postures of the inner pad 3 and the outer pad 4 when no braking is being applied.

[0075] The pair of rotation-side pressing portions 27a, 27b are disposed on both axial sides of the base plate portion 29 constituting the main body portion 26, and are connected to both axial ends of the base plate portion 29. The rotation-side pressing portions 27a, 27b have a horizontal U-shape when viewed in the axial direction, and extend from the axial end of the base plate portion 29 toward the other circumferential side, and are folded back approximately 180 degrees from their respective middle portions toward the radially inward and one circumferential side.

[0076] The tip end (radially inner end) of each of the rotation-side pressing parts 27a, 27b is provided with a return part 42a, 42b, the radially inner side of which is a convex curved surface. The axial width of the return part 42a, 42b is greater than the axial width of the base end to the middle part of the rotation-side pressing parts 27a, 27b. The return parts 42a, 42b are inclined radially inward as they approach each other in the axial direction (approaching the rotor 7).

[0077] The rotation-side pressing portions 27a, 27b are elastically deformed in the radial direction when the inner pad 3 and the outer pad 4 are assembled. As a result, the return portions 42a, 42b elastically press one circumferential side of the outer peripheral edge of the back plate 21 of each of the inner pad 3 and the outer pad 4 radially inward and elastically press the one circumferential side of the outer peripheral edge of the back plate 21 of each of the inner pad 3 and the outer pad 4 radially inward and axially outward, that is, in a direction away from the rotor 7.

[0078] <Gripped plate part> The clamped plate portions 28a, 28b are disposed between the torque transmission surface 24 provided on the back plate 21 of each of the inner pad 3 and the outer pad 4 and the torque receiving surface 19 provided on the rotation-in side connecting portion 10, and have the function of preventing rust from occurring between the torque transmission surface 24 and the torque receiving surface 19.

[0079] The clamped plate portions 28a, 28b are provided on both axial sides of the first fixing portion 30. In the pad clip 5 of this example, the clamped main body portions 45a, 45b constituting the clamped plate portions 28a, 28b, which will be described later, and the first standing plate portion 35 constituting the first fixing portion 30 are not provided in one flat plate. In other words, unlike the conventional structure described in JP 2015-90201 A, the clamped main body portions 45a, 45b constituting the clamped plate portions 28a, 28b and the first standing plate portion 35 are formed from separate flat plates, rather than forming the axial middle portion of one flat plate as the first standing plate portion and both axial side portions as the clamped plate portions.

[0080] For this reason, in this example, cutout portions (slits) 43a, 43b extending in the radial direction (the up-down direction in FIG. 10) are formed between the clamped plate portions 28a, 28b and the first standing plate portion 35 in the axial direction. This allows the clamped plate portions 28a, 28b and the first standing plate portion 35 to be separated in the axial direction at the portions where the cutout portions 43a, 43b are formed, making it possible to set the circumferential positions of each independently.

[0081] The clamped plate portions 28a, 28b are connected to the first standing plate portion 35 via low-rigidity connecting portions 44a, 44b formed by forming the notches 43a, 43b. Each of the notches 43a, 43b has an open end on the radially inner side and a closed end on the radially outer side. The closed ends of the notches 43a, 43a are disposed at approximately the same radial position as the lower side of the connecting portion 38. Therefore, the connecting portions 44a, 44b are disposed at approximately the same radial position as the connecting portion 38.

[0082] The clamped plate portions 28a, 28b are generally L-shaped when viewed in the axial direction, and are made up of clamped main body portions 45a, 45b in the form of rectangular flat plates arranged radially inward, and auxiliary plate portions 46a, 46b in the form of generally triangular plates arranged radially outward. The clamped main body portions 45a, 45b are arranged between the torque transmission surface 24 and the torque receiving surface 19, while the auxiliary plate portions 46a, 46b protrude radially outward from the portion between the torque transmission surface 24 and the torque receiving surface 19.

[0083] The boundaries between the clamped main body parts 45a, 45b and the auxiliary plate parts 46a, 46b are located at approximately the same radial position as the closed ends of the notches 43a, 43b. Therefore, the clamped main body parts 45a, 45b are separated from the first standing plate part 35 over the entire radial width. Meanwhile, the axially inner ends of the auxiliary plate parts 46a, 46b are connected to the first standing plate part 35 via the connecting parts 44a, 44b. The radial width W 44 is the radial width W of the clamped main body portions 45a and 45b 45 It is about 1 / 6 to 1 / 2 of that.

[0084] In the pad clip 5 of this example, the clamped main body portions 45a, 45b are separated from the first upright portion 35 over the entire radial width, so that the circumferential positions of the clamped main body portions 45a, 45b can be set independently from the circumferential position of the first upright portion 35.

[0085] For this reason, when the pad clip 5 is in a free state, the circumferential dimension X from the other circumferential side surface (first contact portion) of the second upright portion 39 that contacts the one circumferential side surface of the intermediate connecting portion 12 to the one circumferential side surface of the clamped main body portions 45a, 45b that contacts the torque receiving surface 19 can be set independently from the circumferential dimension Y from the other circumferential side surface of the second upright portion 39 to the one circumferential side surface (second contact portion) of the first upright portion 35 that contacts the other circumferential side surface of the rotation-in side connecting portion 10.

[0086] In other words, the magnitude of the clamping margin of the first upright portion 35 (second contact portion) relative to the rotation-in side connecting portion 10 and the magnitude of the clamping margin of the clamped main body portions 45a, 45b relative to the torque receiving surface 19 can be set separately.

[0087] In the pad clip 5 of this example, the first standing plate portion 35 and the second standing plate portion 39 are circumferentially supported between the turn-in side connecting portion 10 and the intermediate connecting portion 12, and the turn-in side pressing portions 27a, 27b and the first push-up plate portion 36 and the second push-up plate portion 40 are radially supported between the inner pad 3 and the outer pad 4 and the turn-in side connecting portion 10 and the intermediate connecting portion 12, so that the pad clip 5 is elastically supported by the disc brake device 1. In this mounted state, the turn-in side pressing portions 27a, 27b are elastically deformed in the radial direction, so that the main body portion 26 tends to be deformed so that the radially outer side becomes convex. Therefore, the side surface on one side of the first standing plate portion 35 in the circumferential direction tends to move away (float up) from the side surface on the other side of the turn-in side connecting portion 10 in the circumferential direction to the other side in the circumferential direction.

[0088] Therefore, in this example, even if bending deformation occurs in the main body portion 26 based on the elastic deformation of the turn-in side pressing portions 27a, 27b and the side surface on one side in the circumferential direction of the first standing plate portion 35 becomes circumferentially separated from the side surface on the other side in the circumferential direction of the turn-in side connecting portion 10, the circumferential dimension X is regulated so that the side surface on one side in the circumferential direction of the clamped main body portions 45a, 45b can be brought into surface contact with the torque receiving surface 19. In other words, regardless of bending deformation occurring in the main body portion 26, the circumferential dimension X is regulated so that the value of the tightening margin of the clamped main body portions 45a, 45b does not become positive (no gap occurs between the clamped main body portions 45a, 45b and the torque receiving surface 19).

[0089] 9 and 12, in the free state of the pad clip 5, the held main body parts 45a, 45b are inclined in a direction toward one circumferential side as they move away from the connecting parts 44a, 44b in the radial direction, i.e., toward the radially inner side. The inclination angle θ of the held main body parts 45a, 45b with respect to the side surface on one circumferential side of the first standing plate part 35 is greater than 0 degrees and equal to or less than 20 degrees, and is 15 degrees in the illustrated example.

[0090] And, by inclining the held main body parts 45a, 45b in a direction toward one circumferential side as it goes radially inward, the tightening margin of the held main body parts 45a, 45b with respect to the torque receiving surface 19 is made larger than the tightening margin of the first standing plate part 35 with respect to the side surface on the other circumferential side of the rotation-inlet side connecting part 10. In the illustrated example, the side surface on one circumferential side of the held main body parts 45a, 45b is positioned on one circumferential side of the side surface on one circumferential side of the first standing plate part 35, and the circumferential dimension X is larger than the circumferential dimension Y.

[0091] In the pad clip 5 of this example, the side surfaces on one circumferential side of the clamped main bodies 45a, 45b can be brought into surface contact with the torque receiving surface 19 with a tightening margin in both the braking and non-braking states. The side surfaces on the other circumferential side of the clamped main bodies 45a, 45b face in the circumferential direction the torque transmission surface 24 provided on the back plates 21 of the inner pad 3 and the outer pad 4. The side surfaces on the other circumferential side of the clamped main bodies 45a, 45b come into contact with the torque transmission surface 24 only when reverse braking is applied, and a gap is provided between them and the torque transmission surface 24 in states other than reverse braking.

[0092] When implementing the present invention, the entire clamped plate portions 28a, 28b can be inclined in a direction toward one circumferential side the further they become from the connecting portions 44a, 44b in the radial direction, or the entire or part of the clamped plate portions 28a, 28b can be inclined in a direction toward one circumferential side the further they become from the connecting portions 44a, 44b in the axial direction (toward the axially outward).

[0093] According to the pad clip 5 of this embodiment as described above, it is possible to prevent gaps from being generated between the clamped plate portions 28a, 28b and the torque receiving surface 19, and the drag torque of the inner pad 3 and the outer pad 4 can be reduced. That is, the pad clip 5 of this example has cutouts 43a, 43b between the held plate parts 28a, 28b and the first standing part 35, separating the held main body parts 45a, 45b from the first standing part 35. Therefore, the circumferential dimension X from the side surface on the other circumferential side of the second standing part 39 to the side surface on one circumferential side of the held main body parts 45a, 45b can be set independently from the circumferential dimension Y from the side surface on the other circumferential side of the second standing part 39 to the side surface on one circumferential side of the first standing part 35. In this example, the circumferential dimension X is set so that the tightening margin of the held main body parts 45a, 45b with respect to the torque receiving surface 19 is larger than the tightening margin of the first standing part 35 with respect to the side surface on the other circumferential side of the rotation-in side connecting part 10. Therefore, regardless of the bending deformation occurring in the main body portion 26 based on the elastic deformation of the rotation-in side pressing portions 27a, 27b, the side surface on one circumferential side of the clamped main body portions 45a, 45b can be brought into surface contact with the torque receiving surface 19.

[0094] Therefore, the pad clip 5 of this embodiment can prevent gaps from being generated between the clamped plate portions 28a, 28b and the torque receiving surface 19. Therefore, when the braking force is released, a sufficient clearance can be secured between the torque transmission surfaces 24 of the inner pad 3 and the outer pad 4 and the clamped plate portions 28a, 28b. As a result, the frictional resistance generated between the torque transmission surfaces 24 and the clamped plate portions 28a, 28b can be reduced, and the drag torque of the inner pad 3 and the outer pad 4 can be reduced.

[0095] In addition, the clamped main body parts 45a, 45b are inclined in a direction toward one circumferential side as they move radially inward. Therefore, the clamped main body parts 45a, 45b can be brought into contact with the torque receiving surface 19 with a tightening margin, so that the clamped main body parts 45a, 45b can be effectively brought into surface contact with the torque receiving surface 19 even if the circumferential positions of the clamped plate parts 28a, 28b are displaced.

[0096] In addition, the rotation-side pressing portions 27a, 27b (returned portions 42a, 42b) apply elastic force to the inner pad 3 and the outer pad 4 in a direction that moves them away from each other in the axial direction. Therefore, when braking is not in progress, the linings 20 of the inner pad 3 and the outer pad 4 can be separated from the rotor 7. Therefore, from this point of view, dragging of the inner pad 3 and the outer pad 4 can be prevented, and the occurrence of judder can be prevented.

[0097] [Second Example of the Implementation Form] The second embodiment will be described with reference to FIGS.

[0098] In this example, the structures of the main body 26a and the pair of clamped plate portions 28c, 28d that constitute the pad clip 5a are changed from the structures of the first example of the embodiment.

[0099] That is, the base plate portion 29a constituting the main body portion 26a is composed of a flat plate portion 32 and a circumferential extending portion 34a extending circumferentially from an axially intermediate portion of one circumferential end of the flat plate portion 32.

[0100] The first fixing portion 30a constituting the main body 26a has a generally L-shape when viewed in the axial direction, and includes a first standing plate portion 35a and a first push-up plate portion 36a. The first standing plate portion 35a and the first push-up plate portion 36a have the same axial dimension.

[0101] The first standing plate portion 35a extends so as to bend radially inward from one circumferential end of the circumferential extending portion 34a constituting the base plate portion 29a. The first standing plate portion 35a has a bent portion 48 on the radially outer side and a flat plate portion 49 on the radially inner side. The bent portion 48 has a horizontal U-shape when viewed in the axial direction, and the end on one circumferential side contacts the side surface on the other circumferential side of the axial middle portion of the rotation-side connecting portion 10.

[0102] The first push-up plate portion 36a extends from the radially inner end of the flat portion 49 that constitutes the first upright portion 35a toward one circumferential side, and abuts against the radially inner surface of the axially middle portion of the rotation-inlet side connecting portion 10.

[0103] The clamped plate parts 28c, 28d are provided on both sides of the first fixed part 30a in the axial direction. The clamped plate parts 28c, 28d and the first fixed part 30a (first standing plate part 35a) are provided with cutout parts (slits) 43c, 43d extending in the radial direction (up and down direction in FIG. 16) between the clamped plate parts 28c, 28d and the first fixed part 30a in the axial direction. Therefore, the clamped plate parts 28c, 28d and the first fixed part 30a are separated in the axial direction at the parts where the cutout parts 43c, 43d are formed. The cutout parts 43c, 43d in this example are substantially L-shaped, extend from the radially outer end toward the other circumferential side, and have a closed end at the other circumferential end.

[0104] The clamped plate portions 28c, 28d are connected to both axial ends of one circumferential end of the flat plate portion 32 via low-rigidity connecting portions 44c, 44d formed by forming notches 43c, 43d. The connecting portions 44c, 44d are disposed on both axial sides of the circumferential extending portion 34a and extend in the circumferential direction.

[0105] The clamped plate parts 28c, 28d are arranged in a rectangular flat plate shape, and the radially outer end of the axially inner end is connected to the end of one circumferential side of the connecting part 44c, 44d. The clamped plate parts 28c, 28d are arranged so as to bend at a substantially right angle from the end of one circumferential side of the connecting part 44c, 44d toward the radially inner side. In this example, the clamped plate parts 28c, 28d are arranged substantially parallel to the flat part 49 constituting the first fixing part 30a. In the illustrated example, the clamped plate parts 28c, 28c are inclined by several degrees (1 to 3 degrees) toward the one circumferential side as they move toward the radially inner side with respect to the flat part 49.

[0106] In this example, the clamped plate parts 28c, 28c are separated from the first standing plate part 35a over the entire radial width, so that the circumferential positions of the clamped plate parts 28c, 28d can be set independently of the circumferential position of the first standing plate part 35a. Therefore, the circumferential dimension X from the side surface (first contact part) on the other circumferential side of the second standing plate part 39 to the side surface on one circumferential side of the clamped plate parts 28c, 28d can be set independently of the circumferential dimension Y from the side surface on the other circumferential side of the second standing plate part 39 to the end face (second contact part) on one circumferential side of the bent part 48 constituting the first standing plate part 35a. Therefore, in this example, the circumferential length of the connecting parts 44c, 44d is regulated so that the tightening margin of the clamped plate parts 28c, 28d with respect to the torque receiving surface 19 is made larger than the tightening margin of the first standing plate part 35a with respect to the side surface on the other circumferential side of the rotation-in side connecting part 10. Also in this example, the circumferential positions of the clamped plate portions 28c, 28d are made different from the circumferential position of one circumferential end face of the bent portion 48 that constitutes the first standing plate portion 35a.

[0107] In the case of the pad clip 5a of this embodiment as described above, the clamped plate portions 28c, 28d and the first fixing portion 30a are also separated and constituted by separate flat plates. Therefore, the circumferential dimension X from the side surface on the other side of the second standing portion 39 in the circumferential direction to the side surface on one side of the clamped plate portions 28c, 28d in the circumferential direction can be set independently from the circumferential dimension Y from the side surface on the other side of the second standing portion 39 in the circumferential direction to the end face on one side of the first standing portion 35a (bent portion 48). In this embodiment, the circumferential length of the connecting portions 44c, 44d is regulated so that the tightening margin of the clamped plate portions 28c, 28d is larger than the tightening margin of the first standing portion 35a, so that the side surface on one side of the circumferential direction of the clamped plate portions 28c, 28d can be brought into surface contact with the torque receiving surface 19 regardless of the bending deformation occurring in the main body portion 26a based on the elastic deformation of the turn-in side pressing portions 27a, 27b. The other configurations and effects are the same as those of the first embodiment.

[0108] As shown in a modified example of this example in Figure 19, the clamped plate portions 28c, 28d can be inclined in the axial direction away from the connecting portions 44c, 44d when the pad clip 5a is in a free state, i.e., in the direction toward one circumferential side as they move axially outward.

[0109] Although the embodiment of the present invention has been described above, the present invention is not limited to this, and can be modified as appropriate without departing from the technical concept of the invention.

[0110] The structure of the pad clip of the present invention is not limited to the structure of each example of the embodiment, and can be modified as appropriate. Specifically, the shape of the clamped plate portion, the tilt direction and tilt angle, and the structure of the fixing portion can be modified as appropriate. Furthermore, the present invention is not limited to the opposed piston type disc brake device, and can be applied to a floating caliper type disc brake device. [Explanation of symbols]

[0111] 1 Disc brake device 2 Caliper 3 Inner Pad 4 Outer Pad 5, 5a Pad Clip 6 Pad Clips 7 Rotor 8 Inner Body 9 Outer Body 10 times entry side connection part 11 Output side connection part 12 Intermediate connection 13 Inner cylinder 14 Outer cylinder 15 Mounting seat 16-pin 17 Guide wall 18 Guide groove 19 Torque receiving surface 20 Lining 21 Back plate 22 Overhang 23 Through hole 24 Torque transmission surface 25 Ears 26, 26a Main body 27a, 27b Pressing part on the inlet side 28a~28d Clamped plate part 29, 29a Board part 30, 30a 1st fixed part 31 Second fixed part 32 Flat plate part 33 Hanging plate part 34, 34a Circumferential extension part 35, 35a 1st standing board section 36, 36a 1st push-up plate part 37a, 37b standing pieces 38 Connecting part 39 Second vertical section 40 2nd push-up plate part 41 Bending and raising part 42a, 42b Return part 43a~43d Cutout 44a~44d Connection 45a, 45b Clamped main body 46a, 46b Auxiliary plate part 47a, 47b Outlet side pressing part 48 Bend 49 Flat plate part 100 Disc brake device 101 Caliper 102 Inner Pad 103 Outer pad 104 Rotor 105 Inner Body 106 Outer Body 107 Turn entry side connection part 108 Output side connection part 109 Intermediate connection 110 pin 111 Guide groove 112 Guide wall 113 Lining 114 Back plate 115 Through hole 116 Ears 117 Torque receiving surface 118 Torque transmission surface 119 Pad Clip 120 Body part 121a, 121b Return to the side pressure section 122a, 122b Return to the side pressure section 123a, 123b: Clamped plate 124 Substrate Department 125 1st fixed part 126 Second fixed part 127 1st vertical board section 128 No.1 Oshiage Board

Claims

1. A pad clip for a disc brake device, which is made of a metal plate and is attached between a pair of connecting parts that are arranged to be spaced apart in a circumferential direction and connect an inner body and an outer body in an axial direction, respectively, and elastically presses a pad, a main body portion having fixing portions on both circumferential sides, the main body portion being elastically supported between the pair of connecting portions in a state in which the fixing portions are engaged with the connecting portions; a pressing portion that presses an outer peripheral edge portion of the pad radially inward; a torque receiving surface provided on a side surface on the other circumferential side of the connecting portion arranged on one circumferential side, and a clamped plate portion arranged between the torque receiving surface and a radially outer portion of the side surface on the one circumferential side of the pad, a circumferential dimension from a first contact portion, which is one of the fixing portions arranged on the other circumferential side, to a side surface on one circumferential side of the clamped plate portion, can be set independently from a circumferential dimension from the first contact portion to a second contact portion, which is one of the fixing portions arranged on the one circumferential side, to a side surface on one circumferential side of the connecting portion arranged on the one circumferential side, Regardless of the bending deformation caused in the main body due to the elastic deformation of the pressing portion, a side surface on one circumferential side of the clamped plate portion is in surface contact with the torque receiving surface. Pad clip for disc brake systems.

2. 2. A pad clip for a disc brake device as described in claim 1, wherein the clamping margin of the clamped plate portion relative to the torque receiving surface is greater than the clamping margin of the fixing portion arranged on one circumferential side relative to the side surface on the other circumferential side of the connecting portion arranged on one circumferential side.

3. A pad clip for a disc brake device as described in any one of claims 1 to 2, wherein in a free state, the circumferential position of the side surface on one circumferential side of the clamped plate portion and the circumferential position of the second contact portion are different from each other.

4. A pad clip for a disc brake device as described in any one of claims 1 to 3, wherein a notch portion is formed in the axial direction between the clamped plate portion and the fixed portion arranged on one circumferential side.

5. 5. A pad clip for a disc brake device as described in claim 4, wherein the clamped plate portion is connected to the fixed portion arranged on one circumferential side via a connection portion formed by forming the cutout portion, and in a free state, is inclined in a direction toward one circumferential side as it moves away from the connection portion in the radial or axial direction.

6. 5. A pad clip for a disc brake device as described in claim 4, wherein the clamped plate portion is connected to a circumferential middle portion of the main body portion via a connection portion formed by forming the cutout portion.

7. 7. The pad clip for a disc brake device according to claim 6, wherein the clamped plate portions are inclined in a radial or axial direction in a direction toward one circumferential side as they move away from the connecting portion in a free state.

8. 8. The pad clip for a disc brake device according to claim 5, wherein an inclination angle of the clamped plate portions with respect to the second contact portion in a free state is greater than 0 degrees and is equal to or smaller than 20 degrees.

9. A pad clip for a disc brake device as described in any one of claims 1 to 8, wherein the clamped plate portion is provided on both axial sides of the fixed portion arranged on one circumferential side.

10. 10. The pad clip for a disc brake device according to claim 1, wherein the pressing portion presses the pad in an axial direction away from the rotor.

11. a caliper including an inner body and an outer body arranged on either side of a rotor in an axial direction, and a pair of connecting portions each connecting the inner body and the outer body in the axial direction; A pad supported so as to be movable in an axial direction relative to the caliper; a pad clip made of a metal plate attached between the pair of connecting portions and elastically pressing the pad; A disc brake device, wherein the pad clip is the pad clip for a disc brake device according to any one of claims 1 to 10.

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