Metal parts for pads, pads for disc brakes, and disc brake devices

Abstract

A disc brake device structure is provided that mitigates the noise caused by the collision between the inner circumferential surface of the pin insertion part provided on the back plate and the outer circumferential surface of the pin. A pin seat metal part (23) is installed inside the insertion hole (16a) provided in the back plate (15a) of each of the inner pad (3a) and outer pad (4a). The radially outer side of the inner circumferential surface of the insertion hole (16a) is covered by the main body plate (28) constituting the pin seat metal part (23). As a result, the radially outer side of the inner circumferential surface of the insertion hole (16a) collides with the radially outer end of the outer circumferential surface of the pin (11a) via the main body plate (28).

Description

TECHNICAL FIELD

[0001] The present application relates to a disc brake device for braking a vehicle such as an automobile, in which a pin insertion portion provided in a back plate of a pad of a disc brake and a pin inserted into the inside of the pin insertion portion are engaged at the time of braking. BACKGROUND

[0002] A disc brake device for an automobile is provided with: a pair of pads disposed on both sides of a rotor that rotates together with a wheel; and a pad support member that supports the pair of pads so as to be movable, and performs braking of the automobile by pressing the pair of pads toward both side surfaces of the rotor. In such a disc brake device, sometimes the pads collide with the pad support member to generate an abnormal noise called a squeal. The direction of a moment acting on the pads at the time of braking becomes reversed between forward braking and reverse braking, which is a main cause of the squeal.

[0003] In Japanese Patent Application Publication No. 2015-90201, a structure of a disc brake device is disclosed in which the direction of a moment acting on the pads at the time of braking is made to be the same between forward braking and reverse braking in order to prevent generation of a squeal. Figures 57-59 A disc brake device described in Japanese Patent Application Publication No. 2015-90201 is shown. The disc brake device 1 includes a pad support member, i.e., a caliper 2, an inner pad 3, and an outer pad 4.

[0004] The caliper 2 supports the inner pad 3 and the outer pad 4 so as to be movable in the axial direction (axial direction of the rotor 5) and the radial direction (radial direction of the rotor 5) of the rotor 5. Figure 57 the up-down direction of the rotor 5, Figure 58 the front-rear direction of the rotor 5. Figure 57 The caliper 2 is provided with: an inner body 6 and an outer body 7 disposed on both sides in the axial direction of a rotor 5 (refer to FIG. 1); a turn-in side link portion 8 and a turn-out side link portion 9 that link end portions on both sides in the circumferential direction of the inner body 6 and the outer body 7 to each other; and a center bridge 10 that links intermediate portions in the circumferential direction of the inner body 6 and the outer body 7 to each other. The turn-in side link portion 8 has an abutment surface 18 at a portion opposite the center bridge 10 in the circumferential direction.

[0005] In addition, in the disc brake device 1, the axial direction, the circumferential direction, and the radial direction mean the axial direction, the circumferential direction, and the radial direction of the rotor 5 unless otherwise specified.

[0006] To support the inner pad 3 and outer pad 4 so that they can move axially, the inner body 6 and outer body 7 are respectively provided with pins 11 and guide grooves 12. Specifically, the inner body 6 and outer body 7 each have pins 11 parallel to the central axis of the rotor 5 on the radially inner side of one circumferential side. In addition, the inner body 6 and outer body 7 each have guide wall portions 13 extending axially on the axially inner side of the other circumferential side. The guide wall portions 13 have guide grooves 12 that open on the axially inner side and the circumferential side respectively at the radially middle portion. In the illustrated example, the circumferential side corresponds to the turning-in side when the vehicle moves forward, and the other circumferential side corresponds to the turning-out side when the vehicle moves forward.

[0007] The inner pad 3 and the outer pad 4 each have a friction member 14 and a back plate 15 that supports the back of the friction member 14. The back plate 15 has a generally rectangular insertion hole 16 as a pin insertion part on the radially inner side of one circumferential side (the turning-in end), and a convex ear 17 that protrudes circumferentially on the other circumferential side (the turning-out side).

[0008] The guide grooves 12, which are respectively provided on the other side of the outer body 7 in the circumferential direction, engage in a manner that allows them to move axially.

[0009] To prevent the inner pad 3 and outer pad 4 from shaking when not braking, the disc brake device 1 also includes a pad spring 20. The pad spring 20 is made of metal sheet and has a pair of inward pressing parts 21a and 21b on one circumferential side and a pair of outward pressing parts 22a and 22b on the other circumferential side. The pair of inward pressing parts 21a and 21b presses the outer peripheral edge of the back plate 15 of the inner pad 3 and outer pad 4 radially inward. In addition, the pair of outward pressing parts 22a and 22b press the outer peripheral edge of the back plate 15 of the inner pad 3 and outer pad 4 radially inward.

[0010] The disc brake device 1 generates torques in the following directions on the inner pad 3 and the outer pad 4 during braking. (Refer to the following...) Figure 59 Please provide an explanation.

[0011] When braking forward, such as Figure 59 As shown in (A), facing the other side of the circumference ( Figure 59 The braking tangential force F1 (on the left side, the turning side) acts on point A, the center of the friction surface of the friction member 14 constituting the inner pad 3 (outer pad 4). As a result, the inner pad 3 (outer pad 4) moves slightly towards the other side in the circumferential direction. Furthermore, the braking tangential force F1 is supported by engaging the pin 11 with the through hole 16, which is located radially inward compared to the line of action of the braking tangential force F1. Therefore, during forward braking, a torque M1 is applied to the inner pad 3 (outer pad 4), causing it to rotate counterclockwise.

[0012] When braking backwards, such asFigure 59 The braking tangential force F2 acting on the friction surface center A point of the friction member 14 toward the circumferential one side (right side, turning-in side) of the brake 1 is shown in (B). Figure 59 Thus, the inner pad 3 (the outer pad 4) slightly moves toward the circumferential one side. Also, the abutting surface 19 provided on the circumferential one side surface of the back plate 15 on the radially outer side than the acting line of the braking tangential force F2 abuts against the abutted surface 18, thereby supporting the braking tangential force F2. Thus, at the time of the backing brake, the inner pad 3 (the outer pad 4) is acted on by the moment M2 in the same direction as the moment M1, which is a moment to make the inner pad 3 (the outer pad 4) turn counterclockwise.

[0013] As described above, the disc brake device 1 described in Japanese Patent Application Publication No. 2015-90201 can align the directions of the moments M1, M2 acting on the inner pad 3 and the outer pad 4 at the time of the forward brake and the time of the backing brake. Thus, even in the case where the forward brake and the backing brake are repeatedly performed, it is possible to maintain the posture of the inner pad 3 and the outer pad 4 in the state of turning counterclockwise. Thus, it is possible to suppress the generation of the squeal.

[0014] Also, the turning-in side pressing portions 21a, 21b and the turning-out side pressing portions 22a, 22b of the pad spring 20 press the circumferential both side portions of the back plate 15 of each of the inner pad 3 and the outer pad 4 toward the radially inner side, respectively. Thus, in the state at the time of non-braking, it is possible to press the radially outer side surface of the inner circumferential surface of the insertion hole 16 to the end portion of the radially outer side of the outer circumferential surface of the pin 11, and it is possible to press the radially inner side surface of the ear portion 17 to the radially inner side surface of the guide groove 12. Thus, even in the state at the time of non-braking, it is possible to stabilize the posture of the inner pad 3 and the outer pad 4, and it is possible to suppress the generation of the squeak (abnormal noise) due to pad wobble.

[0015] Prior Art Documents

[0016] Patent Documents

[0017] Patent Document 1: Japanese Patent Application Publication No. 2015-90201 SUMMARY

[0018] PROBLEMS TO BE SOLVED BY THE INVENTION

[0019] In the disc brake device 1 described in Japanese Patent Application Publication No. 2015-90201, the outer circumferential surface of the pin 11 directly contacts the inner circumferential surface of the insertion hole 16. Thus, at the time of braking and the time of brake release, there is a possibility that an abnormal noise (clanking sound) is generated due to the collision of the outer circumferential surface of the pin 11 and the inner circumferential surface of the insertion hole 16.

[0020] The present application has been achieved in order to solve the above-described problems, and has an object to provide a disc brake device capable of mitigating a noise caused by a collision between an inner peripheral surface of a pin insertion portion provided in a back plate of a pad for a disc brake and an outer peripheral surface of a pin inserted in the pin insertion portion.

[0021] Technical means for solving the problem

[0022] The pad pin seat metal piece of the present application has a main plate portion that is installed on the inner side (inner peripheral edge portion) of the pin insertion portion and covers a part of the inner peripheral surface of the pin insertion portion, the pin insertion portion being provided in a back plate that constitutes a pad for a disc brake and being engaged with a pin inserted in the inner side at the time of braking.

[0023] The pad pin seat metal piece of one embodiment of the present application can have the main plate portion formed in, for example, a flat plate shape or a partial cylindrical shape so as to conform to the shape of the inner peripheral surface of the pin insertion portion. Specifically, in a case where the shape of the portion covered by the main plate portion in the inner peripheral surface of the pin insertion portion is a flat surface shape, the main plate portion can be formed in a flat plate shape, and in a case where the shape of the portion covered by the main plate portion is a concave curved surface shape, the main plate portion can be formed in a partial cylindrical shape.

[0024] The pad pin seat metal piece of one embodiment of the present application can further have a bent plate portion that is bent at substantially right angles with respect to the main plate portion at an end portion on at least one side in the length direction of the main plate portion extending in the plate thickness direction of the back plate and is arranged so as to overlap the back plate in the plate thickness direction of the back plate.

[0025] The pad pin seat metal piece of one embodiment of the present application can connect the main plate portion and the bent plate portion via a bent portion having a circular arc-shaped cross-sectional shape.

[0026] The pad pin seat metal piece of one embodiment of the present application can have the bent plate portion provided at each of the end portions on both sides in the length direction of the main plate portion, and can elastically sandwich the back plate with one pair of the bent plate portions.

[0027] The pad pin seat metal piece of one embodiment of the present application can have a separation preventing portion that engages with the back plate at least one of the pair of the bent plate portions.

[0028] The pad pin seat metal piece of one embodiment of the present application can have the separation preventing portion provided only at one of the bent plate portions arranged on the side away from the rotor.

[0029] Alternatively, the pad pin seat metal piece of one embodiment of the present application can have the separation preventing portion provided on each of the pair of the bent plate portions.

[0030] One embodiment of the present application relates to a pad pin seat metal piece for a pad, which can include a tongue piece surrounded by a slit in a substantially U shape, and the anti-disengagement portion can be formed by the tongue piece.

[0031] In this case, the end portion of the tongue piece on the side close to the main plate portion can be a free end.

[0032] One embodiment of the present application relates to a pad pin seat metal piece for a pad, which can include a tongue piece surrounded by a slit in a substantially U shape, and the anti-disengagement portion can be formed by the tongue piece.

[0033] One embodiment of the present application relates to a pad pin seat metal piece for a pad, which can include a tongue piece surrounded by a slit in a substantially U shape, and the anti-disengagement portion can be formed by the tongue piece.

[0034] One embodiment of the present application relates to a pad pin seat metal piece for a pad, which can include a tongue piece surrounded by a slit in a substantially U shape, and the anti-disengagement portion can be formed by the tongue piece.

[0035] One embodiment of the present application relates to a pad pin seat metal piece for a pad, which can include a tongue piece surrounded by a slit in a substantially U shape, and the anti-disengagement portion can be formed by the tongue piece.

[0036] In this case, the end portion of the tongue piece on the side close to the main plate portion can be a free end.

[0037] In addition, the end portion of the auxiliary plate portion on the side away from the rotor can have a guide portion protruding to the outside of the pin insertion portion.

[0038] One embodiment of the present application relates to a pad pin seat metal piece for a pad, which can include a tongue piece surrounded by a slit in a substantially U shape, and the anti-disengagement portion can be formed by the tongue piece.

[0039] One embodiment of the present application relates to a pad pin seat metal piece for a pad, which can include a tongue piece surrounded by a slit in a substantially U shape, and the anti-disengagement portion can be formed by the tongue piece.

[0040] In addition, in the case of braking, the torque can be supported by the pin and the pin insertion portion.

[0041] The pad for a disc brake with a pin seat metal piece according to one embodiment of the present application can provide the pin insertion portion as a substantially rectangular insertion hole that is open only on both sides in the axial direction of the back plate.

[0042] Alternatively, the pad for a disc brake with a pin seat metal piece according to one embodiment of the present application can provide the pin insertion portion as a substantially triangular (including a sector shape), substantially circular, or substantially polygonal insertion hole.

[0043] Further, the pad for a disc brake with a pin seat metal piece according to one embodiment of the present application can provide the pin insertion portion as the cutout that is open not only on both sides in the axial direction of the back plate but also on the outer peripheral portion of the back plate. In this case, the notch can be substantially rectangular, substantially triangular (including a sector shape), substantially circular, or substantially polygonal. The opening position of the cutout on the outer peripheral portion of the back plate is not particularly limited.

[0044] The pad for a disc brake with a pin seat metal piece according to one embodiment of the present application can cover the radially outer side surface of the inner peripheral surface of the pin insertion portion in the radial direction of the rotor with the main plate portion.

[0045] Alternatively, the pad for a disc brake with a pin seat metal piece according to one embodiment of the present application can cover the circumferential side surface of the inner peripheral surface of the pin insertion portion on the side opposite to the friction member in the circumferential direction of the rotor with the main plate portion.

[0046] The pad for a disc brake with a pin seat metal piece according to one embodiment of the present application can bond and fix the pad-use pin seat metal piece to the back plate.

[0047] The pad for a disc brake with a pin seat metal piece according to one embodiment of the present application includes a back plate having a pin insertion portion composed of an insertion hole or a cutout that is engaged with a pin inserted inside during braking, and an engagement recess portion formed in the vicinity of the pin insertion portion, and a friction member supported on the surface of the back plate. In the pad for a disc brake, a pad-use pin seat metal piece according to one embodiment of the present application is installed inside the pin insertion portion, and the tongue or the top portion as the anti-disengagement portion is engaged with the engagement recess portion.

[0048] In one embodiment of the present application, the bottom surface of the engagement recess portion has an inclined surface portion that is inclined in the direction away from the main plate portion in the elongated direction of the bent plate portion more as it goes toward the inner side of the engagement recess portion in the plate thickness direction of the back plate. By engaging the tongue or the top portion as the anti-disengagement portion with the inclined surface portion, the main plate portion can be pressed against the inner peripheral surface of the pin insertion portion.

[0049] A pad pin seat for a disc brake according to an embodiment of the present application is a pad pin seat for a disc brake with a back plate that engages with a pin inserted through the inside at the time of braking and that has a pin insertion portion that is a hole or a notch and an engagement protrusion formed in the vicinity of the pin insertion portion, and a friction member supported on the surface of the back plate, in which a pad pin seat metal member according to an embodiment of the present application is installed on the inside of the pin insertion portion, and the engagement protrusion is fitted on the inside of the engagement hole as the anti-disengagement portion.

[0050] In an embodiment of the present application, the tip portion of the engagement protrusion can be crimped (plastically deformed).

[0051] A disc brake device according to an embodiment of the present application is a disc brake device that includes a pair of pads for disc brakes arranged across a rotor, and a pad support member that has at least one pair (for example, two or four) of pins arranged in parallel with the central axis of the rotor and supports the pair of pads for disc brakes in a manner that allows movement in the axial direction, in which at least one of the pair of pads for disc brakes is a pad pin seat for a disc brake according to an embodiment of the present application.

[0052] Effects of the Invention

[0053] According to the present application, a disc brake device can be achieved that mitigates the abnormal noise caused by the collision of the inner peripheral surface of the pin insertion portion provided in the back plate with the outer peripheral surface of the pin inserted through the pin insertion portion. BRIEF DESCRIPTION OF DRAWINGS

[0054] Figure 1 FIG. 1 is a front view of a disc brake device according to a first embodiment.

[0055] Figure 2 FIG. 2 is a plan view of the disc brake device according to the first embodiment.

[0056] Figure 3 FIG. 3 is a bottom view of the disc brake device according to the first embodiment.

[0057] Figure 4 FIG. 4 is a rear view of the disc brake device according to the first embodiment.

[0058] Figure 5 FIG. 5 is a side view of the disc brake device according to the first embodiment.

[0059] Figure 6 FIG. 6 is a perspective view of the disc brake device according to the first embodiment, viewed from the radially outer side and the circumferentially one side.

[0060] Figure 7is a perspective view of the disc brake device of Embodiment 1, viewed from the radially inner side and one circumferential side.

[0061] Figure 8 is a perspective view of the disc brake device of Embodiment 1, viewed from the radially inner side and the other circumferential side.

[0062] Figure 9 is a sectional view taken along line A-A of Figure 2 .

[0063] Figure 10 is a front view of the inner pad involved in Embodiment 1.

[0064] Figure 11 is a front view of the inner pad of the pin seat metal member involved in Embodiment 1.

[0065] Figure 12 is a rear view of the inner pad of the pin seat metal member involved in Embodiment 1.

[0066] Figure 13 is a perspective view of the inner pad involved in Embodiment 1, viewed from the axially inner side (front side) and the radially inner side.

[0067] Figure 14 is a perspective view of the inner pad involved in Embodiment 1, viewed from the axially outer side (rear side) and the radially inner side.

[0068] Figure 15 (A) of Figure 11 is a partial enlarged view of Figure 15 (B) is a partial enlarged view of Figure 12 .

[0069] Figure 16 is a side view of (A), viewed from the right side. Figure 15

[0070] is a view corresponding to Figure 17 , showing a state in which a pin is inserted through the insertion hole of the inner pad of the pin seat metal member involved in Embodiment 1. Figure 11

[0071] is a view corresponding to Figure 18 , showing a state in which a pin is inserted through the insertion hole of the inner pad of the pin seat metal member involved in Embodiment 1. Figure 13

[0072] is a view corresponding to Figure 19 , showing a state in which a pin is inserted through the insertion hole of the inner pad of the pin seat metal member involved in Embodiment 1. Figure 14 ​

[0073] Figure 20 is a drawing showing a pin seat metal piece involved in the first example of the embodiment, (A) is a front view, (B) is a plan view, (C) is a bottom view, and (D) is a side view.

[0074] Figure 21 is a perspective view showing a pin seat metal piece involved in the first example of the embodiment, (A) is a perspective view observed from the top end side of the bent plate portion, and (B) is a perspective view observed from the base end side of the bent plate portion.

[0075] Figure 22 is a drawing showing another example of the insertion hole, corresponding to (A) of Figure 15 .

[0076] Figure 23 is a drawing showing the second example of the embodiment, corresponding to Figure 15 .

[0077] Figure 24 is a drawing showing the third example of the embodiment, corresponding to Figure 15 .

[0078] Figure 25 is a drawing showing the fourth example of the embodiment, corresponding to (A) of Figure 21 .

[0079] Figure 26 is a drawing showing the fifth example of the embodiment, corresponding to Figure 15 .

[0080] Figure 27 is a drawing showing the fifth example of the embodiment, corresponding to Figure 20 .

[0081] Figure 28 is a drawing showing the fifth example of the embodiment, corresponding to Figure 21 .

[0082] Figure 29 is a drawing showing the sixth example of the embodiment, corresponding to Figure 15 .

[0083] Figure 30 is a drawing showing the seventh example of the embodiment, corresponding to Figure 15 .

[0084] Figure 31 is a drawing showing the eighth example of the embodiment, corresponding to Figure 15 .

[0085] Figure 32 is a drawing showing the eighth example of the embodiment, corresponding to Figure 20 .

[0086] Figure 33 These are perspective views of the pin seat metal part according to the 8th embodiment. (A) is a perspective view viewed from the other side in the width direction of the main body plate, and (B) is a perspective view viewed from one side in the width direction of the main body plate.

[0087] Figure 34 This is the 9th example of the embodiment, equivalent to Figure 15 The image.

[0088] Figure 35 This is the 10th example of the embodiment, equivalent to Figure 15 The image.

[0089] Figure 36 This is the 10th example of the embodiment, equivalent to Figure 20 The image.

[0090] Figure 37 This is the 10th example of the embodiment, equivalent to Figure 21 The image.

[0091] Figure 38 This is the 11th example of the embodiment, equivalent to Figure 20 The image.

[0092] Figure 39 This is the 11th example of the embodiment, equivalent to Figure 21 The image.

[0093] Figure 40 This is the 12th example of the embodiment, equivalent to Figure 15 The image.

[0094] Figure 41 This is the 12th example of the embodiment, equivalent to Figure 16 The image.

[0095] Figure 42 This is the 13th example of the embodiment, equivalent to Figure 15 The image.

[0096] Figure 43 This is the 13th example of the embodiment, equivalent to Figure 16 The image.

[0097] Figure 44 This is the 13th example of the embodiment, equivalent to Figure 20 The image.

[0098] Figure 45 This is the 13th example of the embodiment, equivalent to Figure 21 The image.

[0099] Figure 46 This is the 14th example of the embodiment, equivalent toFigure 15 The image.

[0100] Figure 47 This is the 14th example of the embodiment, equivalent to Figure 16 The image.

[0101] Figure 48 This is the 14th example of the embodiment, equivalent to Figure 20 The image.

[0102] Figure 49 This is the 14th example of the embodiment, equivalent to Figure 21 The image.

[0103] Figure 50 This is the 15th example of the embodiment, equivalent to Figure 11 The image.

[0104] Figure 51 This is the 15th example of the embodiment, equivalent to Figure 12 The image.

[0105] Figure 52 This is a diagram showing the pin seat metal part according to the 15th embodiment, (A) is a front view, and (B) is a side view.

[0106] Figure 53 This is a partial enlarged view showing the inner pad of the 16th embodiment.

[0107] Figure 54 This is the 17th example of the embodiment, equivalent to Figure 53 The image.

[0108] Figure 55 This is the 18th example of the embodiment, equivalent to Figure 53 The image.

[0109] Figure 56 This is the 19th example of the embodiment, equivalent to Figure 10 The image.

[0110] Figure 57 This is a top view showing the existing structure of a disc brake device.

[0111] Figure 58 yes Figure 57 BB cross-sectional view.

[0112] Figure 59 The front view shows the state when the pad is removed. (A) shows the state when braking forward, and (B) shows the state when braking backward.

[0113] Symbol Explanation

[0114] 1.1a Disc Braking System

[0115] 2.2a caliper

[0116] 3. 3a Inner Pad

[0117] 4. 4a outer pad

[0118] 5 rotors

[0119] 6. 6a Internal Body

[0120] 7.7a Exterior

[0121] 8. 8a Turn into the side connection part

[0122] 9. 9a Turnout Side Connection

[0123] 10, 10a Central Bridge

[0124] 11, 11a

[0125] 12, 12a guide groove

[0126] 13, 13a Guide wall section

[0127] 14, 14a friction components

[0128] 15, 15a~15e backplate

[0129] 16, 16a~16c Through Holes

[0130] 17, 17a Ear

[0131] 18, 18a are the surfaces that are abutted.

[0132] 19, 19a mating surfaces

[0133] 20, 20a, 20b pad springs

[0134] 21a~21d Turn into the side pressing part

[0135] 22a~22d Rotation side pressing part

[0136] 23, 23a~23h Pin seat metal parts

[0137] 24 outer cylinder

[0138] 25 mounting brackets

[0139] 26. Extended part

[0140] 27 concavity

[0141] 28 Main body panels

[0142] 29a, 29b Folded Plate Section

[0143] 30a, 30b bending sections

[0144] 31a, 31b chamfered sections

[0145] 33 slits

[0146] 34 tongue slices

[0147] 35a, 35b edge

[0148] 36 elastic components

[0149] 37, 37a Auxiliary Plate Section

[0150] 38 bends

[0151] 39 Guiding Department

[0152] 40a, 40b top

[0153] 41a, 41b engaging recessed parts

[0154] 42 First tilted face

[0155] 43 Second tilted face

[0156] 44 locking holes

[0157] 45-inch engagement protrusion

[0158] 46 Crimping section

[0159] 47 Pad Section

[0160] 48 long holes

[0161] 49 protrusions

[0162] 50 incisions Detailed Implementation

[0163] [Example of Implementation]

[0164] use Figures 1-22 The first example of the implementation method will be described.

[0165] [Overall structure of disc brake system]

[0166] The disc brake device 1a in this example is an opposed piston type disc brake device used for braking a car, and includes: a caliper 2a that is equivalent to a pad support component, a pair of inner pads 3a and outer pads 4a, a pair of pad springs 20a and 20b, and a pair of pad pin metal parts 23 respectively installed on the inner pads 3a and outer pads 4a.

[0167] In this example, unless otherwise specified, axial, circumferential, and radial directions refer to the disc-shaped rotor 5 that rotates with the wheel (see reference). Figure 2 ) in the axial, circumferential and radial directions.Figure 1 , Figure 4 , Figures 9-12 and Figure 17 The direction of the inside and outside, Figure 2 and Figure 3 Up and down directions Figure 5 and Figure 16 The left and right directions correspond to the axial direction, respectively. The side closer to rotor 5 in the axial direction is called the inner axial side, and the side farther away from rotor 5 in the axial direction is called the outer axial side. Additionally, Figures 1-4 , Figures 9-12 and Figure 17 left and right directions Figure 5 and Figure 16 The inner and outer directions are respectively equivalent to the circumferential direction. Figures 1-3 , Figures 9-11 and Figure 17 right side Figure 4 and Figure 12 left side Figure 5 The inside Figure 16 The two sides of the surface are respectively called the circumferential side. Figures 1-3 , Figures 9-11 and Figure 17 left side Figure 4 and Figure 12 right side Figure 5 Surface, Figure 16 The inside sides are referred to as the other side of the circumference. In this example, one side of the circumference becomes the turning-in side when the vehicle is moving forward and the turning-out side when the vehicle is moving backward, while the other side of the circumference becomes the turning-out side when the vehicle is moving forward and the turning-in side when the vehicle is moving backward. Additionally, Figure 1 , Figure 4 , Figure 5 , Figures 9-12 and Figure 17 Up and down directions Figure 2 and Figure 3 The inward and outward directions correspond to radial directions, respectively. Figure 1 , Figure 4 , Figure 5 , Figures 9-12 and Figure 17 The upper side Figure 2 Surface, Figure 3 The inner sides are the radial outer sides, Figure 7-9 , Figure 10 , Figure 10 , Figure 22 and Figures 7-9 The lower side Figure 57 The inside Figures 57-59 The outer sides are radially inner sides. Furthermore, the "rotation-in side" refers to the side where the rotor 5 enters the caliper 2a, and the "rotation-out side" refers to the side where the rotor 5 leaves the caliper 2a.

[0168] [calipers]

[0169] The caliper 2a supports the inner pad 3a and the outer pad 4a respectively, enabling axial movement. The caliper 2a is configured to cover a portion of the circumference of the rotor 5 from the radially outer side and is supported and fixed to the steering knuckle constituting the suspension device. The caliper 2a is integrally formed from a raw material such as aluminum alloy or ferrous alloy through casting or other machining processes. The caliper 2a includes: an inner body 6a and an outer body 7a; an infeed side connection 8a and an outfeed side connection 9a; and a center bridge 10a.

[0170] The inner body 6a and the outer body 7a are arranged on both sides of the rotor 5 in a manner that sandwiches the rotor 5. The inner body 6a is positioned inside the rotor 5 in the width direction of the vehicle (central side), and the outer body 7a is positioned outside the rotor 5 in the width direction of the vehicle. The entry-side connecting part 8a and the exit-side connecting part 9a axially connect the ends of the inner body 6a and the outer body 7a on their respective circumferential sides. The entry-side connecting part 8a axially connects the ends of the inner body 6a and the outer body 7a on one circumferential side, and the exit-side connecting part 9a axially connects the ends of the inner body 6a and the outer body 7a on the other circumferential side. The center bridge 10a axially connects the middle portions of the inner body 6a and the outer body 7a on their respective circumferential sides.

[0171] The inner body 6a has multiple (five in the illustrated example) inner cylinders (not shown), and the outer body 7a has multiple (five in the illustrated example) outer cylinders 24. The inner cylinders and outer cylinders 24 are axially opposed. Inner and outer pistons are fitted inside the inner and outer cylinders 24 in a manner allowing for axial displacement. The inner body 6a has a pair of mounting seats 25 for supporting and securing the caliper 2a to the steering knuckle.

[0172] The inner body 6a and the outer body 7a each have a pin 11a arranged parallel to the central axis of the rotor 5 on their radially inner sides on one circumferential side. The pins 11a are respectively supported and fixed to the inner body 6a and the outer body 7a. A pair of pins 11a, respectively supported and fixed to the inner body 6a and the outer body 7a, are arranged coaxially with each other. The top end of each pair of pins 11a protrudes axially from the axially inner side of the inner body 6a and the outer body 7a, and faces the axially inner side of the rotor 5 with a gap. The top end of each pair of pins 11a is generally cylindrical, having a cylindrical outer circumferential surface shape. It should be noted that in this example, a pin 11a is formed by inserting a bolt with a cylindrical head through a through hole axially penetrating the radially inner side of one circumferential side of the inner body 6a and the outer body 7a, and screwing a nut onto the top end of the bolt. However, in implementing the present invention, the pins may also be integrally provided in the inner and outer bodies.

[0173] like Figure 9As shown, the inner body 6a and the outer body 7a each have a guide wall portion 13a extending axially on the axially inner side of the circumferential side. The guide wall portion 13a has a guide groove 12a in the radial middle portion that opens to the axially inner side and the circumferential side respectively.

[0174] The portion of the connecting part 8a on the turning side that is opposite the central bridge 10a in the circumferential direction has a flat, planar contact surface 18a. The contact surface 18a exists on an imaginary plane orthogonal to the braking tangential force.

[0175] [Inner padding and outer padding]

[0176] The inner pad 3a and the outer pad 4a each have a friction element (shield) 14a and a metal back plate (pressure plate) 15a. The friction element 14a is supported on the surface of the back plate 15a opposite to the rotor 5 on both axial sides. Furthermore, the surface of the back plate 15a facing the side opposite to the rotor 5 (the axial outer surface) is referred to as the back surface of the back plate 15a. The inner pad 3a and the outer pad 4a have symmetrical shapes in the axial direction.

[0177] Both the inner pad 3a and the outer pad 4a have a generally triangular plate-shaped protrusion 26 extending circumferentially from the friction member 14a at the radially inner end (turn-in end) of their respective back plates 15a. The protrusion 26 is located radially inner than the line of action of the braking tangential force (the center point A of the friction surface) during braking. At approximately the center of the protrusion 26 is a through hole 16a that serves as a pin insertion portion, extending axially through the protrusion 26.

[0178] The through-hole 16a is generally rectangular when viewed axially, opening only on both axial sides of the back plate 15a (protrusion 26). In this example, as... Figure 9 As shown, the inner circumferential surface of the through-hole 16a is composed of four flat surfaces S1 to S4 (radially outer surface S1, radially inner surface S2, circumferential one surface S3, and circumferential other surface S4) and four concave curved surfaces C1 to C4. The side of the inner circumferential surface of the through-hole 16a that is radially outer (facing radially inner) is called the radially outer surface, and the side of the inner circumferential surface of the rotor 5 that is radially inner (facing radially outer) is called the radially inner surface. Furthermore, the side of the inner circumferential surface of the through-hole 16a that is circumferentially located on one side of the rotor 5 (facing circumferentially to the other side) is called the circumferential one surface, and the side of the inner circumferential surface of the rotor 5 that is circumferentially located on the other side is called the circumferential other surface.

[0179] A pin 11a, located in the inner body 6a and the outer body 7a, is loosely inserted into the inner side of the through hole 16a. With the central axis of the through hole 16a aligned with the central axis of the pin 11a, gaps exist between the outer circumferential surface of the pin 11a and the four sides of the inner circumferential surface constituting the through hole 16a. In the illustrated example, as shown... Figure 9 As shown, the shape of the through hole 16a viewed from the axial direction is set to be approximately square with four sides of equal length.

[0180] However, in implementing this invention, the shape of the through hole viewed from the axial direction can also be set to an approximately rectangular shape with a radial width slightly larger than the circumferential width (by only the thickness of the pin seat metal part 23), so that the permissible amount of wobble between the pin and the back plate is the same in both the radial and circumferential directions when the pin seat metal part is installed inside the through hole. Furthermore, in implementing this invention, as... Figures 11-19 As shown, a recess 27 for receiving the pin seat metal part 23 can also be formed on the inner circumferential surface of the through hole 16a on the surface covered by the pin seat metal part 23 (in the illustrated example, the radial outer surface).

[0181] On one circumferential side of the back plate 15a, at the end located radially outward of the line of action of the braking tangential force acting during braking, there is a flat abutment surface 19a that faces the abutment surface 18a in the circumferential direction.

[0182] On the other circumferential side of the back plate 15a, a convex ear 17a protruding toward the other circumferential side is provided at the radial center. The ear 17a engages with guide grooves 12a respectively provided in the inner body 6a and the outer body 7a in a manner that allows it to move axially.

[0183] like Figure 20 As shown, pins 11a of the inner body 6a and outer body 7a are inserted into the inner side of the insertion hole 16a provided on one circumferential side of the back plate 15a, and the ear portion 17a provided on the other circumferential side of the back plate 15a engages with the guide groove 12a provided on the inner body 6a and outer body 7a, thereby supporting the inner pad 3a and outer pad 4a so that they can move axially relative to the caliper 2a. In addition, when the inner pad 3a and outer pad 4a are supported on the caliper 2a, the abutment surface 19a provided on one circumferential side of the back plate 15a faces the abutted surface 18a provided on the rotating side connection portion 8a in the circumferential direction.

[0184] [Spring Pad]

[0185] In this example, the disc brake device 1a includes a pair of pad springs 20a and 20b to prevent the inner pad 3a and outer pad 4a from shaking when not braking. Alternatively, in implementing this invention, the method described above can also be used. Figure 20The structure shown integrates a pair of pad springs 20a and 20b into one unit.

[0186] The pad spring 20a presses the circumferential side of the outer periphery of the back plate 15a of both the inner pad 3a and the outer pad 4a radially inward. The pad spring 20a is located radially outward and circumferentially between the turn-in side connecting part 8a and the center bridge 10a of the inner pad 3a and the outer pad 4a. The pad spring 20a is made of metal sheet and has a pair of turn-in side pressing parts 21c and 21d. The pair of turn-in side pressing parts 21c and 21d press the outer periphery of the back plate 15a of both the inner pad 3a and the outer pad 4a, where it overlaps with the pin 11a (insertion hole 16a) radially inward and axially outward.

[0187] The pad spring 20b presses the outer peripheral edge of the back plate 15a of both the inner pad 3a and the outer pad 4a radially inward. The pad spring 20b is located radially outward and circumferentially between the turn-out side connecting part 9a and the center bridge 10a, between the inner pad 3a and the outer pad 4a. The pad spring 20b is made of sheet metal and has a pair of turn-out side pressing parts 22c and 22d. The pair of turn-out side pressing parts 22c and 22d press the outer peripheral edge of the back plate 15a of both the inner pad 3a and the outer pad 4a radially inward.

[0188] [The torque applied during braking]

[0189] In the disc brake device 1a of this example, during braking, the inner pad 3a and the outer pad 4a are respectively subjected to the aforementioned... Figure 20 The structure shown has the same torque.

[0190] When braking forward, such as Figure 20 As shown, facing the other side of the circumference ( Figure 20 The braking tangential force F1 (on the left side, the turning side) acts on point A, the center of the friction surface of the friction element 14a of the inner pad 3a (outer pad 4a). As a result, the inner pad 3a (outer pad 4a) moves slightly towards the other side in the circumferential direction. Furthermore, one circumferential side of the inner circumferential surface of the through hole 16a engages with the end of one circumferential side of the outer circumferential surface of the pin 11a, supporting the braking tangential force F1 (forming a so-called anchor structure). Therefore, during forward braking, a torque M1 acts on the inner pad 3a and the outer pad 4a in the direction that presses the other circumferential side downward radially inward. Additionally, point A, the center of the friction surface, is the center of the friction surface, determined by the piston diameter, arrangement, etc.

[0191] Conversely, during reverse braking, the friction surface center point A of the friction element 14a of the inner pad 3a (outer pad 4a) acts towards one circumferential direction. Figure 20The braking tangential force F2 (on the right side, the turning side) causes the inner pad 3a (outer pad 4a) to move slightly toward one side of the circumference. Furthermore, the contact surface 19a abuts against the contact surface 18a, thereby supporting the braking tangential force F2 (forming a so-called push-anchor structure). Therefore, during reverse braking, a torque M2 acts on the inner pad 3a and the outer pad 4a in the direction of pressing the other side of the circumference radially inward (in the same direction as torque M1).

[0192] Therefore, according to the disc brake device 1a in this example, during forward braking and reverse braking, the torques M1 and M2 acting on the inner pad 3a and the outer pad 4a can be aligned in the same direction. Therefore, even when repeatedly applying forward and reverse braking, such as when entering a garage, the posture of the inner pad 3a and the outer pad 4a can be maintained in a counter-clockwise rotation state. Thus, the generation of clanging noise can be suppressed.

[0193] During forward and reverse braking, the torques M1 and M2 acting on the inner pad 3a and outer pad 4a respectively engage the radially inner side of the inner circumferential surface of the insertion hole 16a with the radially inner end of the outer circumferential surface of the pin 11a, and support the radially inner side of the ear 17a against the radially inner side of the guide groove 12a. When the braking force is released, the inner pad 3a and outer pad 4a move radially inward on one side due to gravity and the pressing force of the pad spring 20a.

[0194] [Pin seat metal part]

[0195] Next, the pin seat metal parts 23 installed on the inner pad 3a and the outer pad 4a will be described.

[0196] like Figure 23 As shown, the pin seat metal part 23 is installed inside the insertion hole 16a provided in the back plate 15a of both the inner pad 3a and the outer pad 4a, that is, a portion of the inner peripheral edge of the insertion hole 16a. In this example, pin seat metal parts 23 with the same structure (the same component) are installed on both the inner pad 3a and the outer pad 4a. However, in implementing the present invention, different pin seat metal parts may be installed on the inner pad 3a and the outer pad 4a.

[0197] The pin seat metal part 23 is installed inside the insertion hole 16a and contacts the outer peripheral surface of the pin 11a inserted into the insertion hole 16a. In other words, the pin seat metal part 23 is located between the outer peripheral surface of the pin 11a and the inner peripheral surface of the insertion hole 16a. This prevents the outer peripheral surface of the pin 11a from directly contacting the inner peripheral surface of the insertion hole 16a when the brake is released, as this would be caused by the pad spring 20a pressing the circumferential side of the inner pad 3a and the outer pad 4a radially inward.

[0198] The pin seat metal part 23 is formed by stamping a single metal sheet, such as a stainless steel plate. Figure 17As shown in (D), the overall structure is approximately J-shaped or approximately U-shaped. The plate thickness T of the pin seat metal part 23 is limited to the thickness of the inner side of the through hole 16a, which allows the pin 11a to loosely penetrate the inner side of the through hole 16a in the axial direction when the pin seat metal part 23 is installed inside the through hole 16a. In addition, in this example, a part of the pin seat metal part 23 (the bent plate part 29b described later) is disposed on the surface (axial inner side) side of the back plate 15a, so the plate thickness T of the pin seat metal part 23 is smaller than the allowable limit thickness of the friction member 14a.

[0199] The pin seat metal part 23 has a main plate portion 28, a pair of folded plate portions 29a and 29b, and a pair of bent portions 30a and 30b.

[0200] The main body plate 28 is disposed between the outer peripheral surface of the pin 11a and the inner peripheral surface of the insertion hole 16a, and has the function of mitigating the impact when the outer peripheral surface of the pin 11a collides with the inner peripheral surface of the insertion hole 16a. The main body plate 28 is configured as a flat plate, covering the radially outer side surface of the inner peripheral surface of the insertion hole 16a substantially entirely. Regarding the main body plate 28, the direction extending along the thickness direction of the back plate 15a (…) Figure 24 The direction of (A) Figure 17 The vertical direction of (B) and (C), Figure 25 The left-right direction of (D) is called the length direction, which is aligned with the axial direction of the rotor 5 in the assembled state of the disc brake device 1a. Furthermore, regarding the main body plate 28, the direction orthogonal to both the length direction and the thickness direction ( Figure 25 The left and right directions of (A) to (C) Figure 25 The direction of (D) is called the width direction, which is consistent with the circumferential direction of the rotor 5 in the assembled state of the disc brake device 1a. The length dimension of the main body plate 28 is approximately the same as the thickness dimension of the back plate 15a (protrusion 26).

[0201] The folded plate portions 29a and 29b function to fix the pin seat metal part 23 to the back plate 15a. The folded plate portions 29a and 29b are bent at their ends along the length of the main plate portion 28, and are arranged to overlap with the back plate 15a in the thickness direction. The folded plate portions 29a and 29b are bent at approximately right angles relative to the main plate portion 28. The folded plate portions 29a and 29b extend radially outward from their ends along the length of the main plate portion 28 in the through hole 16a (in this example, radially outward of the rotor 5). The folded plate portions 29a and 29b are arranged approximately parallel to each other, elastically clamping the portion of the back plate 15a located near the radially outward side of the through hole 16a. In this example, regarding the bent plate portions 29a and 29b, the elongation direction (length direction) is consistent with the radial direction of the rotor 5 in the assembled state of the disc brake device 1a, and the width direction is consistent with the circumferential direction of the rotor 5 in the assembled state of the disc brake device 1a.

[0202] The lengths of the two folded plate portions 29a and 29b are different. Specifically, the length of the folded plate portion 29a located on the axially outer side (opposite side of the rotor) is larger than the length of the folded plate portion 29b located on the axially inner side (rotor side).

[0203] At the top end (radially outer end) of each of the pair of bent plate portions 29a and 29b, chamfered portions 31a and 31b are provided on both sides in the width direction. Therefore, the top ends of the pair of bent plate portions 29a and 29b have a pointed shape. In the illustrated example, one bent plate portion 29a uses an R-shaped chamfer as the chamfered portion 31a, and the other bent plate portion 29b uses a C-shaped chamfer as the chamfered portion 31b, but the type (shape) of the chamfer is not particularly limited.

[0204] One of the folded plate portions 29a, located on the outer side of the axial direction, also has the function of engaging with the back plate 15a to prevent the pin seat metal part 23 from falling off the back plate 15a. Therefore, one of the folded plate portions 29a has an anti-detachment part. In contrast, the other folded plate portion 29b, located on the inner side of the axial direction, is generally flat and does not have an anti-detachment part.

[0205] The anti-detachment part provided only on one side of the bent plate portion 29a is composed of a tongue 34 surrounded by a roughly U-shaped slit 33. The tongue 34 extends in the elongation direction of the bent plate portion 29a, and one end of the tongue 34 on the main plate portion 28 side is a free end. In other words, the end of the tongue 34 closer to the main plate portion 28, i.e., the radially inward end, is the free end, and the end farther from the main plate portion 28, i.e., the radially outward end, is the engaging end. The tongue 34 tilts towards the axially inward direction (closer to the back surface of the back plate 15a) the further inward it is towards the radially inward direction. When the pin seat metal part 23 is installed on the back plate 15a, the tongue 34 elastically deforms towards the axially outward direction, and the top end (top corner) engages with the back surface of the back plate 15a. That is, when the pin seat metal member 23 moves radially inward relative to the back plate 15a, the tongue 34 abuts (bites into) the back of the back plate 15a, preventing the pin seat metal member 23 from moving radially inward relative to the back plate 15a. In implementing the present invention, the tip of the tongue can also engage with the engaging recess formed on the back of the back plate.

[0206] A pair of curved portions 30a and 30b each have an arc-shaped cross-section, forming an overall approximately quarter-cylinder shape. The pair of curved portions 30a and 30b connect the main body plate 28 to the pair of folded plate portions 29a and 29b, respectively. The pair of curved portions 30a and 30b cover one side (radial outer side) of the opening edge on both axial sides of the through hole 16a, i.e., the right-angled edge portions 35a and 35b.

[0207] The pin seat metal part 23 can be installed through the following process.

[0208] First, with the length direction of the main body plate 28 aligned with the thickness direction of the back plate 15a, and the top ends of the pair of bent plate portions 29a and 29b facing outward in the radial direction of the insertion hole 16a (in this example, the radial outer direction of the rotor 5), the pin seat metal part 23 is positioned inside the insertion hole 16a.

[0209] Subsequently, the pin holder metal part 23 is moved relative to the back plate 15a by bringing the main body plate 28 closer to the inner circumferential surface (radial outer surface) of the insertion hole 16a, thereby pressing the back plate 15a between the pair of bent plate parts 29a and 29b. As a result, the back plate 15a is elastically clamped between the tongue 34 in one bent plate part 29a and the other bent plate part 29b. At this time, the tongue 34, acting as an anti-detachment part, elastically deforms, and its top end engages with the back surface of the back plate 15a. In this example, the pin holder metal part 23 is thus fixed to the back plate 15a.

[0210] According to the disc brake device 1a of this example, when the brake is released, it can mitigate the abnormal noise caused by the collision between the inner peripheral surface of the insertion hole 16a of the back plate 15a of the inner pad 3a and the outer pad 4a and the outer peripheral surface of the pin 11a inserted into the insertion hole 16a.

[0211] In this example, a pin seat metal part 23 is installed inside the insertion hole 16a of the back plate 15a of both the inner pad 3a and the outer pad 4a. The main body plate 28 constituting the pin seat metal part 23 covers the radially outer side of the inner circumferential surface of the insertion hole 16a. Therefore, direct contact between the radially outer end of the outer circumferential surface of the pin 11a and the radially outer side of the inner circumferential surface of the insertion hole 16a is prevented. When the brake is released, the torques M1 and M2 acting on the inner pad 3a and the outer pad 4a during braking cease to act, and one circumferential side of the back plate 15a is pressed radially inward by the pad spring 20a. At this time, in this example, the radially outer side of the inner circumferential surface of the insertion hole 16a can collide with the radially outer end of the outer circumferential surface of the pin 11a via the main body plate 28. Therefore, the abnormal noise caused by the collision between the outer circumferential surface of the pin 11a and the inner circumferential surface of the insertion hole 16a can be mitigated.

[0212] Furthermore, the edge portions 35a and 35b of the opening edge of the through hole 16a can be covered by a pair of curved portions 30a and 30b, respectively. Therefore, direct contact between the edge portions 35a and 35b and the pin 11a can be prevented. Thus, damage to the edge portions 35a and 35b and the pin 11a due to stress concentration can be prevented. Additionally, during braking and when the brake is released, the curved portions 30a and 30b, which have an arc-shaped cross-section, slide relative to the pin 11a, rather than the edge portions 35a and 35b sliding relative to the pin 11a, thereby reducing the sliding resistance of the inner pad 3a and the outer pad 4a relative to the pin 11a. As a result, when the brake is released, the clearance between the friction member 14a and the rotor 5 can be sufficiently ensured, reducing drag resistance.

[0213] Furthermore, by installing pin seat metal parts 23 on the inner pad 3a and the outer pad 4a respectively, the constraint conditions of the inner pad 3a and the outer pad 4a during braking can be changed compared to the case where the pin seat metal parts 23 are not installed. In addition, the main body plate portion 28 can contact the pin 11a, instead of the radially outer side surface of the inner circumferential surface of the through hole 16a contacting the pin 11a. Therefore, during braking, noise generated in the inner pad 3a and the outer pad 4a can be suppressed.

[0214] Furthermore, since the top ends of the pair of bent plate portions 29a and 29b are made into a pointed shape, when the pin seat metal part 23 is installed on the inner pad 3a and the outer pad 4a, the back plate 15a can be prevented from hooking onto the pair of bent plate portions 29a and 29b. Therefore, the workability of the installation operation of the pin seat metal part 23 can be improved.

[0215] In this example, the pin seat metal part 23 is fixed to the back plate 15a by elastically clamping the back plate 15a by the pair of bent plate portions 29a, 29b constituting the pin seat metal part 23, without the need for screws, rivets, or other components or machining to fix the pin seat metal part 23. Therefore, the cost required to fix the pin seat metal part 23 to the back plate 15a can be kept low.

[0216] Because the tip (tip corner) of the tongue 34, which serves as an anti-detachment part, engages with the back surface of the back plate 15a, the pin holder metal part 23 can be effectively prevented from moving radially inward relative to the back plate 15a. Therefore, the pin holder metal part 23 can be effectively prevented from detaching from the back plate 15a. Furthermore, the radially inward end of the tongue 34 is a free end, and it tilts more towards the axial inward direction the further it moves radially inward. Therefore, simply pressing the back plate 15a between the pair of bent plate portions 29a, 29b allows the tip of the tongue 34 to engage with the back surface of the back plate 15a. Therefore, no special processing is required to prevent the pin holder metal part 23 from detaching from the back plate 15a. This also helps to keep costs low.

[0217] [Example of Implementation]

[0218] use Figure 17 The second example of the implementation method will be described.

[0219] In this example, the mounting position of the pin seat metal part 23 relative to the insertion hole 16a provided in the back plate 15a of the inner pad 3a (and the outer pad 4a) is changed by the structure of the first embodiment.

[0220] In this example, the pin holder metal part 23 is installed inside the through hole 16a by covering one circumferential side of the inner circumferential surface of the through hole 16a (the side opposite to the friction member 14a in the circumferential direction) with the main body plate part 28. Therefore, the main body plate part 28 is positioned between the pin 11a (see reference 14a). Figure 25 The circumferential side of the outer peripheral surface of the plate 29a and the circumferential side of the inner peripheral surface of the through hole 16a are located between the two ends of the plate 29a and the circumferential side of the plate 29a. The folded plate portions 29a and 29b extend from the ends of both sides toward the circumferential side in the length direction of the main plate portion 28.

[0221] In the example described above, during forward braking, when the inner pad 3a and the outer pad 4a are displaced toward the other side of the circumference, the circumferential side of the inner circumferential surface of the through hole 16a can collide with the end of the circumferential side of the outer circumferential surface of the pin 11a via the main body plate portion 28, thereby mitigating the generation of abnormal noise.

[0222] The other structures and effects are the same as in the first embodiment.

[0223] [Example of Implementation]

[0224] use Figure 25 The third example of the implementation method will be described.

[0225] In this example, the number of pin seat metal parts 23 installed relative to the insertion hole 16a provided in the back plate 15a of the inner pad 3a (and outer pad 4a) is changed from the structure of the first and second embodiments.

[0226] In the first and second embodiments, only one pin seat metal member 23 is installed inside the insertion hole 16a. However, in this example, two pin seat metal members 23 are installed inside the insertion hole 16a. The first pin seat metal member 23 is installed inside the insertion hole 16a such that the main body plate portion 28 covers the radially outer side of the inner circumferential surface of the insertion hole 16a. The second pin seat metal member 23 is installed inside the insertion hole 16a such that the main body plate portion 28 covers one circumferential side of the inner circumferential surface of the insertion hole 16a. In summary, this example has a structure that combines the first and second embodiments.

[0227] Based on the above example, when the brake is released, the radially outer surface of the inner circumferential surface of the through hole 16a can be connected to the pin 11a (see reference 23) via the main body plate portion 28 constituting the first pin seat metal member 23. Figures 26-28 The outer radially outer end of the outer peripheral surface of the pin 11a collides with the pin 11a. Furthermore, during forward braking, one circumferential side of the inner peripheral surface of the through hole 16a can collide (engage) with one circumferential side of the outer peripheral surface of the pin 11a via the main body plate portion 28 constituting the second pin seat metal member 23. Therefore, the generation of abnormal noise can be mitigated in both the case of brake release and forward braking.

[0228] The other structures and effects are the same as in Examples 1 and 2 of the implementation method.

[0229] [Example of Implementation]

[0230] use Figure 17 The fourth example of the implementation method will be described.

[0231] In this example, the surface of the main body plate portion 28 constituting the pin seat metal part 23a that faces the inner peripheral surface of the insertion hole 16a ( Figure 29 The upper surface is covered (coated) by a thin film of elastic components 36 such as rubber or synthetic resin. Additionally, in Figure 17 The elastic component 36 is represented by a diagonal checkered pattern. In contrast, the main body plate 28 contains pin 11a (see reference). Figure 30 Opposite face (etc.) Figure 17 The lower surface is not covered by the elastic component 36.

[0232] In the example described above, the surface of the main body plate 28 facing the inner circumference of the through hole 16a is covered by the elastic member 36, thus more effectively mitigating the impact when the inner circumference of the through hole 16a collides with the outer circumference of the pin 11a. Conversely, the surface of the main body plate 28 facing the outer circumference of the pin 11a is not covered by the elastic member 36, thus preventing the sliding resistance relative to the pin 11a from increasing.

[0233] Furthermore, in implementing this invention, such as Figures 31-33 As shown, the entire surface of the main body plate facing the inner circumference of the insertion hole can be covered by the elastic member, or only a portion can be covered by the elastic member. Alternatively, the inner circumference of the insertion hole can be covered by the elastic member, or a structure in which a plate-shaped elastic member is clamped between the main body plate and the inner circumference of the insertion hole can be used.

[0234] The other effects are the same as in Examples 1 and 2 of the implementation method.

[0235] [Example of Implementation]

[0236] use Figure 17 The fifth example of the implementation method will be described.

[0237] This example is a variation of the first embodiment. The pin seat metal part 23b in this example not only has a main plate part 28, a pair of folded plate parts 29a and 29b and a pair of bent parts 30a and 30b, but also has an auxiliary plate part 37 and a bent part 38.

[0238] The auxiliary plate portion 37 is configured as a flat plate and is provided at the end of the main plate portion 28 on one side in the width direction (the circumferential side in this example). The auxiliary plate portion 37 is bent at a right angle relative to the main plate portion 28 and extends radially inward. When the auxiliary plate portion 37 is installed in the through hole 16a, it covers one circumferential side of the inner circumferential surface of the through hole 16a. The surface of the auxiliary plate portion 37 facing the inner circumferential surface of the through hole 16a can also be covered by an elastic member as described in the fourth example of the above embodiment.

[0239] The auxiliary plate portion 37 has a guide portion 39 for facilitating the insertion of the pin 11a into the inner side of the insertion hole 16a. The guide portion 39 is located at one end of the auxiliary plate portion 37 along the length of the main body plate portion 28, and this end is positioned further away from the rotor 5 than the other end. Specifically, the guide portion 39 is located at the end of the auxiliary plate portion 37 furthest from the rotor 5, i.e., the axially outer end. When the main body plate portion 28 is installed in the insertion hole 16a, the guide portion 39 protrudes outward (axially outer) from the insertion hole 16a. The guide portion 39 is flat and is positioned on the same plane as the portion of the auxiliary plate portion 37 other than the guide portion 39 (the portion positioned inside the insertion hole 16a). However, in implementing the present invention, the guide portion may be inclined relative to the portion of the auxiliary plate portion other than the guide portion. In this case, the guide portion may be inclined in a direction that is more circumferentially inclined the further outward it is.

[0240] The curved portion 38 has an arc-shaped cross-section and is generally configured as a quarter-cylinder. The curved portion 38 connects the main plate portion 28 and the auxiliary plate portion 37. The curved portion 38 covers the corner portion of the inner circumferential surface of the through hole 16a that exists on the radially outer side and circumferential side.

[0241] In the example described above, when the brake is released, the radially outer surface of the inner circumferential surface of the through hole 16a can be connected to the pin 11a (see reference 11a) via the main body plate portion 28. Figure 34 The outer radially outer end of the outer peripheral surface of the pin 11a is impacted. Furthermore, during forward braking, one circumferential side of the inner peripheral surface of the through hole 16a can collide with one circumferential side of the outer peripheral surface of the pin 11a via the auxiliary plate portion 37. Therefore, the generation of abnormal noise can be mitigated in both the case of brake release and forward braking.

[0242] To achieve the aforementioned effects, the structure of the third embodiment requires two pin holders, while in this example, only one pin holder 23b is needed. Therefore, the number of parts can be reduced, costs can be lowered, and installation time can be reduced. Furthermore, since only one pin holder 23b is installed in this example, the undesirable situation of forgetting to install one pin holder, as is the case with two pin holders, is avoided. Additionally, since the auxiliary plate 37 has a guide portion 39, the operation of inserting the pin 11a into the inside of the insertion hole 16a can be easily performed.

[0243] The other structures and effects are the same as in the first embodiment.

[0244] [Sixth Example of Implementation]

[0245] use Figure 17 The sixth example of the implementation method will be described.

[0246] In this example, the mounting position of the pin seat metal part 23b relative to the insertion hole 16a provided in the back plate 15a of the inner pad 3a (and the outer pad 4a) is changed from the structure of the fifth embodiment.

[0247] That is, in this example, the pin seat metal part 23b is installed inside the insertion hole 16a by using the main body plate part 28 to cover one circumferential side of the inner circumferential surface of the insertion hole 16a (the side of the rotor 5 located on the opposite side to the friction member 14a in the circumferential direction) and using the auxiliary plate part 37 to cover the radially outer side of the inner circumferential surface of the insertion hole 16a.

[0248] Therefore, the main body plate 28 is located between pin 11a (refer to) Figures 35-37 The auxiliary plate portion 37 is located between the circumferential end of the outer peripheral surface of the pin 11a and the circumferential side of the inner peripheral surface of the through hole 16a. Additionally, a pair of bent plate portions 29a and 29b extend from their respective ends toward the circumferential side in the length direction of the main plate portion 28.

[0249] In the example described above, during forward braking, as the inner pad 3a and outer pad 4a displace towards the opposite circumferential direction, one circumferential side of the inner circumferential surface of the through hole 16a can collide (engage) with the circumferential end of the outer circumferential surface of the pin 11a via the main body plate portion 28. Furthermore, during brake release, the radially outer side of the inner circumferential surface of the through hole 16a can collide with the radially outer end of the outer circumferential surface of the pin 11a via the auxiliary plate portion 37. Therefore, in either case during forward braking or brake release, the generation of abnormal noise can be mitigated.

[0250] The other structures and effects are the same as in Example 5 of the implementation method.

[0251] [Seventh Example of Implementation]

[0252] use Figures 38-39 The seventh example of the implementation method will be described.

[0253] This example is a variation of the fifth embodiment. In the pin holder metal part 23c of this example, the auxiliary plate part 37a is equipped with a pin 11a (see reference). Figure 40(etc.) to exert elastic force. Therefore, in the free state of the auxiliary plate portion 37a, the included angle between the main plate portion 28 and the auxiliary plate portion 37a is an acute angle slightly smaller than a right angle (90 degrees). In addition, a gap that is approximately triangular in shape when viewed axially is formed between the auxiliary plate portion 37a and one side of the inner circumferential surface of the insertion hole 16a.

[0254] When the pin 11a is inserted into the through hole 16a, the auxiliary plate 37a elastically deforms by increasing the angle between itself and the main plate 28 (towards the circumferential side of the through hole 16a) due to the contact with the pin 11a. As a result, the auxiliary plate 37a applies an elastic force to the pin 11a toward the other side in the circumferential direction.

[0255] In the example described above, the pin 11a can be pressed towards the other side in the circumferential direction using the auxiliary plate portion 37a. Therefore, the wobble between the outer circumferential surface of the pin 11a and the inner circumferential surface of the through hole 16a can be suppressed. That is, the wobble of the inner pad 3a and the outer pad 4a relative to the pin 11a in the circumferential direction can be suppressed.

[0256] The other effects are the same as in Example 5 of the implementation method.

[0257] [Example of Implementation]

[0258] use Figure 41 The eighth example of the implementation method will be described.

[0259] In this example, the mounting position of the pin holder metal part 23c relative to the insertion hole 16a provided in the back plate 15a of the inner pad 3a (and outer pad 4a) is changed from that in the seventh embodiment. Furthermore, the shape of the pin holder metal part 23c in this example differs from that in the seventh embodiment in terms of minor details such as the chamfered portion 31b, but since the basic shape is the same, the explanation regarding the difference in shape is omitted.

[0260] In this example, the pin holder metal part 23c is installed inside the through hole 16a by covering one circumferential side of the inner circumferential surface of the through hole 16a with the main body plate 28 and covering the radially inner side of the inner circumferential surface of the through hole 16a with the auxiliary plate 37a. The auxiliary plate 37a is attached to the pin 11a (see reference). Figures 42-45 (etc.) imparts an elastic force toward the radially outward direction.

[0261] In the example described above, the pin 11a can be pressed radially outward using the auxiliary plate 37a. Therefore, the pressing force of the pad spring 20a, which presses the outer periphery of the back plate 15a radially inward, can suppress the circumferential side of the inner pad 3a and the outer pad 4a from shifting radially outward (lifting).

[0262] The other structures and effects are the same as in Example 7 of the implementation method.

[0263] [Ninth Example of Implementation]

[0264] use Figure 17 The ninth example of the implementation method will be described.

[0265] In this example, the mounting position of the pin seat metal part 23c relative to the insertion hole 16a provided in the back plate 15a of the inner pad 3a (and outer pad 4a) is changed from the structural changes in the seventh and eighth embodiments.

[0266] In this example, the pin holder metal part 23c is installed inside the through hole 16a by covering one circumferential side of the inner circumferential surface of the through hole 16a with the main body plate 28 and covering the radially outer side of the inner circumferential surface of the through hole 16a with the auxiliary plate 37a. The auxiliary plate 37a is attached to the pin 11a (see reference). Figures 46-49 (etc.) an elastic force acting radially inward.

[0267] In the example described above, the pin 11a can be pressed radially inward using the auxiliary plate 37a. Therefore, the wobble between the outer peripheral surface of the pin 11a and the inner peripheral surface of the through hole 16a can be suppressed. That is, the circumferential side portions of the inner pad 3a and the outer pad 4a can be suppressed from wobble radially relative to the pin 11a.

[0268] The other structures and effects are the same as in Example 7 of the implementation method.

[0269] [Example of Implementation]

[0270] use Figures 50-52 The tenth example of the implementation method will be described.

[0271] This example is a variation of the first embodiment. The pin seat metal part 23d in this example has the following shape: 1. The outermost axially oriented bent plate part 29a of the two bent plate parts 29a and 29b is not flat, but rather bent into a generally V-shaped form with the radial (elongation direction) middle portion as the top 40a. Specifically, the base half of the bent plate part 29a located on the outermost side of the axially oriented side is inclined towards the axially inward direction as it moves further outward radially, and the top half is inclined towards the axially outward direction as it moves further outward radially.

[0272] In this example, the top 40a, located at the radial center of the folded plate portion 29a positioned on the axially outer side, functions as an anti-detachment part. That is, the top 40a engages (butts) with the back of the back plate 15a.

[0273] In the example described above, since an anti-detachment part is provided in the bent plate portion 29a, it is not necessary to perform stamping on the metal plate constituting the pin seat metal part 23d; only bending is required. Therefore, processing costs can be reduced.

[0274] The other structures and effects are the same as in the first embodiment.

[0275] [Example of Implementation]

[0276] use Figure 53 The 11th example of the implementation method will be described.

[0277] This example is a variation of the 10th embodiment. In this example, the pin seat metal part 23e does not have the shape of each of the pair of bent plate portions 29a and 29b formed as a flat plate. Instead, the radial (elongation direction) middle portion of the bent plate portions 29a and 29b is used as the top 40a and 40b, forming an overall shape that is bent into a generally V-shape. That is, the pin seat metal part 23e in this example has a shape symmetrical about the length direction of the main plate portion 28.

[0278] Specifically, the base half of the bent plate portion 29a located on the axially outer side slopes towards the axially inner side as it moves further outward radially, while the top half slopes towards the axially outer side as it moves further outward radially. Similarly, the base half of the bent plate portion 29b located on the axially inner side slopes towards the axially outer side as it moves further outward radially, while the top half slopes towards the axially inner side as it moves further outward radially. Therefore, the separation dimension (axial dimension) between the pair of bent plate portions 29a and 29b is smallest at the tops 40a and 40b, and gradually increases in size as they move further away radially from the tops 40a and 40b.

[0279] In this example, the tops 40a and 40b provided at the radial middle of the pair of folded plate portions 29a and 29b are respectively used as anti-detachment portions. That is, the top 40a provided on one folded plate portion 29a engages with the back side of the back plate 15a, and the top 40b provided on the other folded plate portion 29b engages with the surface of the back plate 15a.

[0280] In the case described above, it is not necessary to perform stamping on the metal plate constituting the pin holder metal part 23e in order to provide anti-detachment parts for the pair of bent plate portions 29a and 29b; bending is sufficient. Therefore, processing costs can be reduced. Furthermore, since the separation dimension of the pair of bent plate portions 29a and 29b can be increased at the top, the operation of pressing the back plate 15a into the pair of bent plate portions 29a and 29b can be easily performed. Additionally, the pin holder metal part 23e in this example has a symmetrical shape along the length of the main body plate portion 28; therefore, when installing the pin holder metal part 23e, there is no need to pay attention to the installation direction, improving workability.

[0281] The other structures and effects are the same as in the first embodiment.

[0282] [Example of Implementation]

[0283] use Figure 17 as well as Figure 54 The 12th example of the implementation method will be described.

[0284] This example is a variation of the 11th embodiment. In this example, the shape of the back plate 15b of the mounting pin metal part 23e was studied.

[0285] On the surface and back of the back plate 15b, respectively, near the radially outer side of the insertion hole 16a, there are straight, circumferentially extending engaging recesses (grooves) 41a and 41b. The engaging recesses 41a and 41b each have a generally triangular cross-sectional shape. The engaging recesses 41a and 41b are each composed of a first inclined portion 42 disposed radially inner and a second inclined portion 43 disposed radially outer. The first inclined portion 42 and the second inclined portion 43 are provided on the bottom surface of each engaging recess 41a and 41b.

[0286] The first inclined surface 42 slopes further inward toward the inner side of the engaging recesses 41a and 41b in the thickness direction of the back plate 15b, and further outward in the radial direction (the elongation direction of the bent plate portions 29a and 29b) away from the main plate portion 28. The second inclined surface 43 slopes further inward toward the inner side of the engaging recesses 41a and 41b in the thickness direction of the back plate 15b, and further outward in the radial direction (the elongation direction of the bent plate portions 29a and 29b) towards the main plate portion 28 (the inner side). Therefore, the bottom surfaces of the engaging recesses 41a and 41b are each bent into a V-shape.

[0287] With the back plate 15b held between the pair of folded plate portions 29a and 29b, the tops 40a and 40b of the folded plate portions 29a and 29b, which serve as anti-detachment parts, engage with the engaging recesses 41a and 41b. Specifically, the tops 40a and 40b respectively enter the inner side of the engaging recesses 41a and 41b, engaging at least with the first inclined surface 42. Therefore, the tops 40a and 40b (folded plate portions 29a and 29b) exert a radially outward force through their engagement with the first inclined surface 42. In this example, this force presses the main plate portion 28 against the radially outer side of the inner circumferential surface of the insertion hole 16a.

[0288] In the example described above, by engaging the tops 40a and 40b, which serve as anti-detachment parts, with the engaging recesses 41a and 41b, a force toward the radially outward is applied to the pin seat metal part 23e, thus more effectively preventing the pin seat metal part 23e from falling off the back plate 15b (moving radially inward).

[0289] Regarding other structures and effects, they are the same as in Example 11 of the embodiments.

[0290] [Example of Implementation]

[0291] use Figure 55 The 13th example of the implementation method will be described.

[0292] In this example, the pin holder metal part 23f is composed of a main body plate part 28, a bent plate part 29b, and a bent part 30b. The bent plate part 29b is provided at the end of the main body plate part 28 on the axial inner side.

[0293] In this example, the pin seat metal part 23f, as described above, is bonded and fixed to the back plate 15a using an adhesive material. Specifically, the main body plate part 28 is bonded and fixed to the radially outer side of the inner circumferential surface of the through hole 16a.

[0294] In this example, since the pin holder metal part 23f is composed of a main body plate portion 28, a bent plate portion 29b, and a bent portion 30b, miniaturization and weight reduction of the pin holder metal part 23f can be achieved. Furthermore, since the pin holder metal part 23f is bonded and fixed to the back plate 15a, a large force is not required when fixing the pin holder metal part 23f. In this example, the bent plate portion 29b is only provided at the axially inner end of the main body plate portion 28. Therefore, during braking, the engagement between the bent plate portion 29b and the surface of the back plate 15a can support the pin 11a (see reference 11a). Figure 9The force acting on the pin seat metal part 23f (main body plate part 28) through sliding contact (etc.) can effectively prevent the pin seat metal part 23f from falling off the back plate 15a. In addition, by making the bent plate part 29b abut against the surface of the back plate 15a, the pin seat metal part 23f can also be positioned in the axial direction relative to the back plate 15a.

[0295] The other effects are the same as in the first embodiment.

[0296] [Example of Implementation]

[0297] use Figure 56 The 14th example of the implementation method will be described.

[0298] This example is a variation of the first embodiment. The pin holder metal part 23g in this example consists of a main body plate portion 28, a bent plate portion 29a, and a bent portion 30a. The bent plate portion 29a is located at the axially outer end of the main body plate portion 28 and has an anti-detachment portion. In this example, the anti-detachment portion is formed by an engaging hole 44 that penetrates the bent plate portion 29a in the plate thickness direction (axial direction).

[0299] On the back side of the back plate 15c of both the inner pad 3a and the outer pad 4a, a cylindrical engaging protrusion 45 protruding axially outward is provided near the radially outer side of the insertion hole 16a. The outer diameter of the engaging protrusion 45 is the same as or slightly smaller than the inner diameter of the engaging hole 44.

[0300] In this example, the engaging protrusion 45 is fitted (inserted without wobbling) inside the engaging hole 44. Then, the top end of the engaging protrusion 45 is pressed (plastically deformed) into the engaging hole 44, forming a pressing part 46 at the top end of the engaging protrusion 45.

[0301] In the example described above, it is possible to more effectively prevent the pin seat metal part 23g from falling off the back plate 15c (moving radially inward). Alternatively, when implementing the present invention, a structure can be adopted in which the pressing part 46 is omitted from the top end of the engaging protrusion 45, that is, the engaging protrusion 45 is only fitted inside the engaging hole 44.

[0302] The other structures and effects are the same as in the first embodiment.

[0303] [Example of Implementation]

[0304] use Figure 1 The 15th example of the implementation method will be described.

[0305] The pin seat metal part 23h in this example, like the pin seat metal part 23g in the 14th embodiment, has a main body plate portion 28, a bent plate portion 29a, and a bent portion 30a. In particular, the bent plate portion 29a of the pin seat metal part 23h in this example, which is located on the axially outer side, has an integral pad portion 47 that overlaps with the back side of the back plate 15d.

[0306] The pad portion 47 is configured as a flat plate and is clamped between the back of the back plate 15d and the inner piston (or outer piston) during braking. The pad portion 47 has the function of suppressing braking noise caused by the vibration of the inner pad 3a (outer pad 4a) during braking and suppressing the uneven wear of the friction member 14a.

[0307] The pad portion 47 has multiple elongated holes 48 extending circumferentially at various locations on its outer periphery. Protrusions 49, erected vertically on the back of the back plate 15d, engage with each elongated hole 48 in a manner that allows relative displacement in the circumferential direction but not in the axial direction. Therefore, the pad portion 47 is supported so that it cannot detach axially from the back of the back plate 15d. In this example, since the pad portion 47 is integrally provided with the bent plate portion 29a, the pin seat metal part 23h is not fixed to the back plate 15d by adhesive materials, riveting, or other fixing mechanisms.

[0308] In the example described above, the pin seat metal part 23h can be fixed to the back plate 15d by using the pad part 47 which is integrally provided with the bent plate part 29a. Therefore, compared with the case where the pin seat metal part and the pad are provided separately, the number of parts can be reduced and the working time of the fixing operation can be reduced.

[0309] The other structures and effects are the same as in the first embodiment.

[0310] [Example of Implementation]

[0311] use Figure 17 The 16th example of the implementation method will be described.

[0312] In this example, the shape of the insertion hole 16b provided on the back plate 15a of both the inner pad 3a and the outer pad 4a is different from the structure of the first to the fifteenth embodiments.

[0313] In this example, the inner circumferential surface of the through hole 16b is composed of four flat surfaces S1 to S4 (radially outer surface S1, radially inner surface S2, one circumferential surface S3, and the other circumferential surface S4) and four concave surfaces C1 to C4. Specifically, in this example, the radius of curvature of the radially outer and circumferentially one side corner C1 is made sufficiently larger than the radii of curvature of the other corners C2 to C4, and larger than the radius of curvature of the pin 11a inserted into the inner side of the through hole 16b (see reference). ​The radius of curvature of (etc.) is large. In addition, when adopting a structure in which the main body plate portion using the pin seat metal part covers the corner C1 in the inner peripheral surface of the insertion hole 16b, the main body plate portion is configured as a partially cylindrical shape instead of a flat plate shape.

[0314] In the example described above, the contact area between the outer peripheral surface of pin 11a and the inner peripheral surface of through hole 16b can be increased. Therefore, the generation of abnormal noise can be suppressed.

[0315] The other structures and effects are the same as in the first embodiment.

[0316] [Example of Implementation]

[0317] use ​ The 17th example of the implementation method will be described.

[0318] In this example, the shape of the insertion hole 16c provided in the back plate 15a of the inner pad 3a and the outer pad 4a is different from the structure of the first to the sixteenth embodiments.

[0319] In this example, the radius of curvature of the corner C1 of the insertion hole 16b in the 16th embodiment is further increased (the two side surfaces S1 and S3 are omitted), and the insertion hole 16c is configured to be approximately triangular (fan-shaped) or approximately 1 / 4 circle when viewed axially. The inner circumferential surface of the insertion hole 16c is composed of two side surfaces S2 and S4 (radially inner side surface S2 and another circumferential side surface S4), one side surface S5, which is a concave curved surface, and three corners C2 to C4, which are also concave curved surfaces. Furthermore, when the structure in which the main body plate of the pin seat metal part covers the side surface S5 in the inner circumferential surface of the insertion hole 16c is adopted, the main body plate is configured to be partially cylindrical instead of flat.

[0320] In the case described above, the contact area between the outer peripheral surface of pin 11a and the inner peripheral surface of through hole 16c can be increased. Therefore, the generation of abnormal noise can be suppressed. In addition, the gap between the outer peripheral surface of pin 11a and the inner peripheral surface of through hole 16c can be reduced, thereby suppressing the shaking of inner pad 3a and outer pad 4a.

[0321] The other structures and effects are the same as in the first embodiment.

[0322] [Example of Implementation]

[0323] use ​ The 18th example of the implementation method will be described.

[0324] In this example, the pin insertion portion on the back plate 15a of the inner pad 3a (and outer pad 4a) is not formed by a through hole that opens only on both sides of the axial direction of the back plate 15a, but is formed by a cutout 50 that also opens on one side of the circumferential direction.

[0325] The cutout 50 is roughly rectangular when viewed axially. The inner circumferential surface of the cutout 50 consists of three flat sides S1, S2, and S4 (radially outer side S1, radially inner side S2, and the other circumferential side S4) and two concave corners C2 and C3. Furthermore, in this example structure, during forward braking, the action on the inner pad 3a (outer pad 4a) towards the other circumferential side... ​ The braking tangential force (on the left side, the turning side) is generated by the other circumferential side of the backplate 15a and the guide wall 13a (see reference). ​ (etc.) to support it.

[0326] In the example described above, the pin insertion part is set as a notch 50 instead of a through hole, thus the processing cost of the pin insertion part can be kept low, and the inner pad 3a (and the outer pad 4a) can be made lighter.

[0327] The other structures and effects are the same as in the first embodiment.

[0328] [Example of Implementation]

[0329] use ​ The 19th example of the implementation method will be described.

[0330] In this example, the inner shim 3a (and the outer shim 4a) are changed relative to the caliper 2a (see reference). ​ The support structure (etc.). Specifically, in this example, the disc brake device 1a as a whole has a total of 4 pins 11a (refer to...). ​ (etc.). Furthermore, the circumferential sides of the inner pad 3a (and the outer pad 4a) are engaged with the pair of pins 11a supported on the caliper 2a in a manner that allows them to move axially along the rotor 5. Therefore, the back plate 15e of each of the inner pad 3a (and the outer pad 4a) has a protrusion 26 with a through hole 16a on both circumferential sides.

[0331] In this example, the pin holder metal part 23 can be installed not only inside the through hole 16a on one circumferential side, but also inside the through hole 16a on the other circumferential side. Therefore, it is possible to suppress not only the abnormal noise caused by the collision between the inner circumferential surface of the through hole 16a on one circumferential side and the outer circumferential surface of the pin 11a, but also the abnormal noise caused by the collision between the inner circumferential surface of the through hole 16a on the other circumferential side and the outer circumferential surface of the pin 11a.

[0332] The other structures and effects are the same as in the first embodiment.

[0333] As long as the structures of the various implementation examples do not contradict each other, they can be appropriately combined for implementation.

[0334] The pin holder metal part of the present invention is not limited to the structure described in the various embodiments. Its shape can be appropriately modified as long as it can suppress abnormal noise generated between the pin and the pin insertion portion. Furthermore, the mounting position and number of pin holder metal parts are not limited to the structures shown in the various embodiments. The shape of the pin insertion portion (insertion hole and cutout) on which the pin holder metal part is mounted is also not limited to the shape described in the various embodiments. Additionally, the support structure of the pad relative to the pad support member in the circumferential portion of the disc brake device is not limited to the structure described in the various embodiments.

Claims

1. A pad pin seat metal member characterized by comprising: a main plate portion installed at an inner side of a pin insertion portion provided in a back plate constituting a pad for a disc brake and covering a part of an inner peripheral surface of the pin insertion portion, the pin insertion portion being engaged with a pin inserted in the inner side at the time of braking, and a pair of bent plate portions bent at end portions on both sides in a length direction of the main plate portion.

2. The pad pin seat metal member according to claim 1, characterized in that, when the main plate portion is installed in the pin insertion portion, the main plate portion extends in a plate thickness direction of the back plate, and the bent plate portions overlap in the plate thickness direction of the back plate with respect to the back plate.

3. The pad pin seat metal member according to claim 2, characterized in that, the end portions on at least one side in the length direction of the main plate portion are bent at substantially right angles with respect to the main plate portion.

4. The pad pin seat metal member according to claim 2, characterized in that, the main plate portion and the bent plate portions are connected via a curved portion having a circular arc-shaped cross-sectional shape.

5. The pad pin seat metal member according to claim 2, characterized in that, the pair of bent plate portions elastically hold the back plate.

6. The pad pin seat metal member according to claim 1, characterized in that, the bent plate portion on one side is arranged farther from a rotor than the bent plate portion on the other side.

7. A pad pin seat metal member characterized by comprising: a main plate portion installed at an inner side of a pin insertion portion provided in a back plate constituting a pad for a disc brake and covering a part of an inner peripheral surface of the pin insertion portion, the pin insertion portion being engaged with a pin inserted in the inner side at the time of braking, and a pair of bent plate portions bent at end portions on both sides in a length direction of the main plate portion.

8. The pad pin seat metal member according to claim 7, characterized in that, the bent plate portion on one side has an anti-disengagement portion engaged with the back plate, the anti-disengagement portion is inclined and elastically deformed to be engaged with the back plate, the anti-disengagement portion is composed of a top portion and has a shape bent as a whole in a substantially V-letter shape with the top portion as a top, and the anti-disengagement portion is composed of the top portion. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The anti-extraction portion is inclined and elastically deformed to be engaged with the back plate, The main plate portion extends in the plate thickness direction of the back plate when the main plate portion is installed in the pin insertion portion, and the bent plate portion overlaps the back plate in the plate thickness direction of the back plate, The bent plate portion integrally has a pad plate portion coinciding with the back surface of the back plate.

9. A pad pin seat metal member characterized by The pad pin seat metal member has: a main plate portion installed on the inner side of a pin insertion portion and covering a portion of the inner peripheral surface of the pin insertion portion, the pin insertion portion being provided in a back plate constituting a pad for a disc brake and being engaged with a pin inserted in the inner side at the time of braking, and a pair of bent plate portions bent at the end portions on both sides in the length direction of the main plate portion, the bent plate portion on only one side has an anti-extraction portion engaged with the back plate, the anti-extraction portion is inclined and elastically deformed to be engaged with the back plate, further has an auxiliary plate portion bent at the end portion on at least one side of the main plate portion in the width direction of the main plate portion, the width direction of the main plate portion being orthogonal to the length direction and the thickness direction of the main plate portion, respectively, the auxiliary plate portion covers a portion of the inner peripheral surface of the pin insertion portion deviated from the portion covered by the main plate portion when the main plate portion is installed in the pin insertion portion.

10. The pad pin seat metal member according to claim 9, characterized in that the end portion on the at least one side of the main plate portion in the width direction of the main plate portion is bent at substantially a right angle with respect to the main plate portion.

11. The pad pin seat metal member according to claim 9, characterized in that the auxiliary plate portion exerts an elastic force on the pin inserted in the pin insertion portion.

12. The pad pin seat metal member according to claim 9, characterized in that the end portion on one side in the length direction of the main plate portion has a guide portion, the end portion on the one side of the auxiliary plate portion is configured to be farther from the rotor than the end portion on the other end of the auxiliary plate portion, the guide portion is configured to protrude to the outer side of the pin insertion portion when the main plate portion is installed in the pin insertion portion.

13. A pad pin seat metal member characterized by The pad pin seat metal member has: a main plate portion installed on the inner side of a pin insertion portion and covering a portion of the inner peripheral surface of the pin insertion portion, the pin insertion portion being provided in a back plate constituting a pad for a disc brake and being engaged with a pin inserted in the inner side at the time of braking, and a pair of bent plate portions bent at the end portions on both sides in the length direction of the main plate portion, the bent plate portion on only one side has an anti-extraction portion engaged with the back plate, the anti-extraction portion is inclined and elastically deformed to be engaged with the back plate, at least a portion of the surface opposite to the inner peripheral surface of the pin insertion portion is covered by an elastic member.

14. A pad for a disc brake, characterized in that has: a back plate having a pin insertion portion constituted by an insertion hole or a cutout engaged with a pin inserted in the inner side at the time of braking; and a friction member supported on the surface of the back plate, The pad for disc brake according to any one of claims 1 to 13 is installed in the inner side of the pin insertion portion.

15. The pad for disc brake according to claim 14, wherein The pin insertion portion is the insertion hole, The insertion hole has a substantially rectangular shape.

16. The pad for disc brake according to claim 14, wherein The main plate portion covers a radially outer side surface of the inner peripheral surface of the pin insertion portion that is located radially outward of the rotor.

17. The pad for disc brake according to claim 14, wherein The main plate portion covers a circumferentially side surface of the inner peripheral surface of the pin insertion portion that is located on the opposite side of the friction member in the circumferential direction of the rotor.

18. The pad for disc brake according to claim 14, wherein The pad pin seat metal piece is adhesively fixed to the back plate.

19. A pad for a disc brake, characterized in that Possessing: The pin seat metal piece according to claim 1; A back plate having a pin insertion portion constituted by an insertion hole or a cutout that engages with a pin inserted in the inner side at the time of braking; and A friction member supported on the surface of the back plate, The back plate has an engagement recess formed in the vicinity of the pin insertion portion, The pin seat metal piece is installed in the inner side of the pin insertion portion, The tongue as the anti-extraction portion engages with the engagement recess.

20. The pad for disc brake according to claim 19, wherein The engagement recess has an inclined surface portion that is inclined more in the direction away from the main plate portion in the elongation direction of the bent plate portion as it is more toward the inner side of the engagement recess in the plate thickness direction of the back plate, The tongue as the anti-extraction portion presses the main plate portion against the inner peripheral surface of the pin insertion portion by engaging against the inclined surface portion.

21. A pad for a disc brake, characterised in that Possessing: The pin seat metal piece according to claim 7; A back plate having a pin insertion portion constituted by an insertion hole or a cutout that engages with a pin inserted in the inner side at the time of braking; and A friction member supported on the surface of the back plate, The back plate has an engagement protrusion formed in the vicinity of the pin insertion portion, The pin seat metal piece is installed in the inner side of the pin insertion portion, The engagement protrusion is fitted in the inner side of an engagement hole as the anti-extraction portion.

22. The pad for disc brake according to claim 21, wherein The tip end portion of the engagement protrusion is crimped to the engagement hole.

23. A disc brake device characterized by Possessing: A pair of pads for disc brake disposed with a rotor interposed therebetween; and A pad support member having at least a pair of pins disposed in parallel with the central axis of the rotor, supporting the pair of pads for disc brake in a manner movable in the axial direction of the rotor, At least one of the pair of pads for disc brake is the pad for disc brake according to claim 14.

Images