Pad jig for disc brake device, and disc brake device

Abstract

Provided is a pad jig which can be applied to a disc brake device provided with a circumferential bridge and which can stably apply a pressing force to a pair of pads. The roll-out-side pad jig (5) is provided with: a main body section (39) that is elastically supported between a center bridge (12) and a roll-out-side end bridge (11); and a pair of pad pressing sections (40a, 40b) that press the outer peripheral edge sections of the pair of pads (3) toward the inside in the radial direction. The radially outer side surface of the main body section (39) is pressed against the radially inner side surface of the roll-out-side circumferential bridge (14) by the elastic force of the pair of pad pressing sections (40a, 40b).

Description

Technical Field

[0001] The present invention relates to a pad clamp for a disc brake device and the disc brake device. Background Art

[0002] Disc brake devices are widely used for braking automobiles and motorcycles. When the disc brake device is used for braking, a pair of pads arranged on both sides of a rotor rotating together with the wheel are pressed against both axial side surfaces of the rotor by a piston.

[0003] As such a disc brake device, disc brake devices of various structures are conventionally known, but opposed piston type disc brake devices having pistons on both axial sides of a rotor can obtain a stable braking force, and thus are increasingly used in recent years.

[0004] For example, as described in Japanese Patent Gazette No. 2010-78055, an opposed-piston disc brake device includes: a brake caliper, which is arranged to cover a rotor that rotates together with the wheel from the radial outside and is fixed to the vehicle body; and a pair of pads, which are supported to be able to move axially relative to the brake caliper and are arranged on both axial sides of the rotor.

[0005] The brake caliper comprises: an inner body, an outer body, an input-side end bridge and an output-side end bridge which are arranged radially outward from the outer periphery of the rotor and connect the circumferential ends of the inner body with the circumferential ends of the outer body, and a center bridge which is arranged radially outward from the outer periphery of the rotor and connects the circumferential center portion of the inner body with the circumferential center portion of the outer body in the axial direction.

[0006] The inner body has an inner cylinder body, in which an inner piston is embedded. The outer body has an outer cylinder body, in which an outer piston is embedded.

[0007] During braking, brake fluid is fed from the master cylinder to the inner cylinder and the outer cylinder, respectively. As a result, the inner piston embedded in the inner cylinder is pushed out in the axial direction, pressing the pad supported by the inner body to the axial side of the rotor. Similarly, the outer piston embedded in the outer cylinder is pushed out in the axial direction, pressing the pad supported by the outer body to the axial side of the rotor. As a result, the rotor is strongly clamped by a pair of pads, and the vehicle is braked.

[0008] During braking, the inner piston and the outer piston exert a force in the direction of axial separation on the inner body and the outer body in the form of a reaction of pressing a pair of pads against the axial sides of the rotor. Therefore, if the rigidity of the brake caliper is insufficient, the inner body and the outer body will elastically deform in the direction of axial separation, and the fluid consumption will increase, which may cause the brake feel to deteriorate.

[0009] On the other hand, the disc brake device is installed in the vehicle at a position closer to the road surface than the spring constituting the suspension device, so it becomes a so-called unsprung load. Therefore, in order to improve the fuel consumption performance and driving performance of the vehicle, it is required to achieve weight reduction.

[0010] Prior art literature

[0011] Patent Literature

[0012] Patent Document 1: Japanese Patent Application Publication No. 2010-78055

[0013] Patent Document 2: U.S. Patent No. 2013 / 0092481 Summary of the invention

[0014] Technical problem that the invention aims to solve

[0015] In the specification of US Pat. No. 2013 / 0092481, in order to achieve both rigidity and lightness of the disc brake device, a structure is described in which a circumferential bridge is provided between the end bridge and the center bridge in the circumferential direction.

[0016] In a disc brake device, in order to suppress the shaking of the pad during non-braking, a pad clamp is provided between the end bridge and the center bridge. However, due to interference between the circumferential bridge and the pad clamp, it is difficult to directly apply the pad clamp assembled in the existing disc brake device without the circumferential bridge in its original shape in the disc brake device with the circumferential bridge.

[0017] An object of the present invention is to provide a pad clamp which can be applied to a disc brake device including a circumferential bridge and can stably apply a pressing force to a pair of pads.

[0018] Technical solutions to the problem

[0019] A pad clamp for a disc brake device involved in one embodiment of the present invention is made of a metal plate, mounted on a brake caliper, and elastically presses a pair of pads, wherein the brake caliper comprises: an inner body and an outer body; a center bridge and an end bridge, wherein the center bridge and the end bridge are separately arranged in the circumferential direction and respectively connect the inner body and the outer body in the axial direction; and a circumferential bridge, wherein the circumferential bridge is circumferentially spanned between the center bridge and the end bridge, and the pad clamp is mounted on the brake caliper and elastically presses a pair of pads.

[0020] A pad clamp for a disc brake device according to one embodiment of the present invention comprises: a main body portion elastically supported between the center bridge and the end bridges; and a pair of pad pressing portions that press the outer peripheral edge portions of a pair of pads toward the radial inside.

[0021] The radially outer side surface of the main body portion is pressed toward the radially inner side surface of the circumferential bridge by the elastic force of the pair of pad pressing portions.

[0022] In a pad clamp for a disc brake device involved in one embodiment of the present invention, the main body has two first fixing parts at the end of one circumferential side, and the two first fixing parts press the side surface of the other circumferential side of the center bridge in the circumferential direction, which are located on both sides of the connection part connected to the circumferential bridge in the axial direction, and the main body has a second fixing part at the end of the other circumferential side, and the second fixing part presses the side surface of the one circumferential side of the end bridge directly or indirectly in the circumferential direction, which is located radially inside the connection part connected to the circumferential bridge.

[0023] In the pad clip for a disc brake device according to one aspect of the present invention, the pair of pad pressing portions are arranged on both sides of the main body portion in the axial direction and have a horizontal U-shape when viewed in the circumferential direction.

[0024] A pad clamp for a disc brake device according to one aspect of the present invention includes: a first clamp having the main body and a pair of pad pressing portions; and a second clamp assembled to the end bridge.

[0025] The second clamp has an intervening portion disposed between the second fixing portion and a side surface on one circumferential side of the end bridge.

[0026] The intervening portion includes a radial engagement portion that engages with the second fixing portion in a radial direction.

[0027] In a case where the pad clamp for a disc brake device involved in one embodiment of the present invention has the first clamp and the second clamp, the second fixing portion has a shape bent in a convex manner on the other side of the circumference, the radial engaging portion has a shape bent in a convex manner on one side of the circumference, and the second fixing portion is arranged on the radial outside of the radial engaging portion.

[0028] In the pad clamp for a disc brake device according to one aspect of the present invention, the second clamp is assembled to the end bridge on the swing-out side and has two outer clamping parts and one inner clamping part that elastically clamp the end bridge from both sides in the radial direction.

[0029] The outer clamping portion has a flat plate shape, is disposed on both sides of the circumferential bridge in the axial direction, and is clamped between the radial outer side surface of the end bridge and the pad.

[0030] When the second clamp has two outer clamping parts and one inner clamping part, the inner clamping part has a circumferential clamping part at a portion that protrudes further to the other side in the circumferential direction than the outer clamping part. The circumferential clamping part is bent in a convex manner on the radial outside and is circumferentially engaged with the radial inner surface of the end bridge.

[0031] When the pad clamp for a disc brake device according to one embodiment of the present invention includes the first clamp and the second clamp, the second clamp includes a pair of second axial restricting portions, and the pair of second axial restricting portions are arranged close to and opposite to both axial side surfaces of the circumferential bridge.

[0032] In a case where the pad clamp for a disc brake device involved in one embodiment of the present invention has the first clamp and the second clamp, the second clamp has an axial snap-fit ​​portion, the axial width of the axial snap-fit ​​portion is slightly larger than the axial width of the second fixing portion, and the axial snap-fit ​​portion is axially snap-fitted with the second fixing portion.

[0033] When the pad clamp for a disc brake device according to one aspect of the present invention includes the first clamp and the second clamp, the first clamp includes a pair of first axial restricting portions, and the pair of first axial restricting portions are arranged close to and opposite to both axial side surfaces of the circumferential bridge.

[0034] In a case where the pad clamp for a disc brake device involved in one embodiment of the present invention has the first clamp and the second clamp, the first clamp has a radial limiting portion, and when the first clamp is assembled relative to the brake caliper, the radial limiting portion abuts against the radial inner side surface of the circumferential bridge to prevent the abutment position of the first fixing portion relative to the side surface on the other circumferential side of the center bridge from being offset radially outward from the regular position.

[0035] In the pad clamp for a disc brake device according to one aspect of the present invention, the pair of pad pressing portions presses the pad in a direction away from the rotor in the axial direction.

[0036] A disc brake device according to one aspect of the present invention includes a brake caliper, a pair of pads, and a pad clamp made of a metal plate.

[0037] The brake caliper comprises: an inner body and an outer body, wherein the inner body and the outer body are arranged on both sides of the axial direction with the rotor clamped therebetween; a center bridge and an end bridge, wherein the center bridge and the end bridge are arranged separately in the circumferential direction and respectively connect the inner body and the outer body in the axial direction; and a circumferential bridge, wherein the circumferential bridge is circumferentially mounted on the center bridge and the end bridge.

[0038] The pair of pads is supported so as to be movable in the axial direction relative to the brake caliper.

[0039] The pad clamp is attached to the brake caliper to elastically press the pair of pads, and is therefore a pad clamp for a disc brake device according to one aspect of the present invention.

[0040] In a disc brake device involved in one embodiment of the present invention, the inner clamping portion of the pad clamp has a circumferential engaging portion at a portion that protrudes to the other circumferential side than the outer clamping portion, and the circumferential engaging portion is bent in a convex manner in the radial direction outward, and is circumferentially engaged with the radial inner side surface of the end bridge, and the end bridge has an engaging inclined surface on the radial inner side surface, and the engaging inclined surface is inclined toward the radial inner side as it moves toward one side in the circumferential direction, and is circumferentially engaged with the circumferential engaging portion.

[0041] In a pad clamp for a disc brake device according to one embodiment of the present invention, the end bridge has a planar moment support surface on the radially outer side surface that is in surface contact with the outer clamping portion, and the engaging inclined surface has an inclination angle of not less than 15 degrees and not more than 30 degrees relative to the moment support surface.

[0042] In a pad clamp for a disc brake device involved in one embodiment of the present invention, the main body of the pad clamp has two first fixing parts and a second fixing part, and the second fixing part directly presses the side surface of one circumferential side of the end bridge, which is located radially inside the connecting part connected to the circumferential bridge, and the part of the side surface of one circumferential side of the end bridge pressed by the second fixing part has a locking recessed portion recessed toward the other circumferential side.

[0043] In a pad clamp for a disc brake device involved in one embodiment of the present invention, the side surface on the other circumferential side of the center bridge has a first inclined surface on the radial inner side that is inclined toward the other circumferential side as it moves radially outward, and has a second inclined surface on the radial outer side of the side adjacent to the first inclined surface that is inclined toward one circumferential side as it moves radially outward.

[0044] Effects of the Invention

[0045] The pad clip for a disc brake device according to one embodiment of the present invention can be applied to a disc brake device including a circumferential bridge, and can stably apply a pressing force to a pair of pads. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a front view showing a disc brake device to which the swing-out side pad clamp according to the first example of the embodiment of the present invention is mounted.

[0047] Figure 2 is from Figure 1 Figure viewed from the upper side.

[0048] Figure 3 is from Figure 1 Figure viewed from the bottom.

[0049] Figure 4 This is a perspective view of a disc brake device to which the rotation-outside pad clamp according to the first example of the embodiment of the present invention is mounted, as viewed from the radially outer side and the other circumferential side.

[0050] Figure 5 This is a perspective view of a disc brake device to which the rotation-outside pad clamp according to the first example of the embodiment of the present invention is attached, as viewed from the radially outer side and from one circumferential side.

[0051] Figure 6 yes Figure 2 AA line section view.

[0052] Figure 7 yes Figure 2 BB line cross-sectional view.

[0053] Figure 8 yes Figure 2 An enlarged view of the other circumferential side of the device.

[0054] Fig. 9 yes Figure 2 An enlarged view of a circumferential side portion.

[0055] Fig.10 yes Figure 6 An enlarged view of the other circumferential side of the device.

[0056] Fig.11 yes Figure 7 An enlarged view of the other circumferential side of the device.

[0057] Fig.12 is from Figure 2 The lining block is omitted in the figure.

[0058] Fig.13 is from Figure 3 The lining block is omitted in the figure.

[0059] Fig.14 is from Figure 6 The lining block is omitted in the figure.

[0060] Fig.15 is from Figure 7 The lining block is omitted in the figure.

[0061] Fig.16 yes Fig.13 An enlarged view of the other circumferential side of the device.

[0062] Fig.17 yes Fig.14 An enlarged view of the other circumferential side of the device.

[0063] Fig.18 yes Fig.15 An enlarged view of the other circumferential side of the device.

[0064] Fig.19 yes Fig.12 CC line section view.

[0065] Fig. 20 It is a front view which shows the rotation-out side pad clamp of the 1st example of embodiment of this invention.

[0066] Fig.21 is from Fig. 20 FIG. 1 is a diagram of the first example of the rotation-side pad clamp as viewed from the upper side.

[0067] Fig. 22 is from Fig. 20 FIG. 1 is a diagram of the first example of the rotation side pad clamp as viewed from the bottom side.

[0068] Fig.23 is from Fig. 20 A diagram of the first example of the roll-out side pad fixture as viewed from the right side.

[0069] Fig.24 is from Fig. 20 FIG. 1 is a diagram of the first example of the rotation-out side pad fixture as viewed from the left side.

[0070] Fig.25 This is a perspective view of the first example of the rolling-out side pad clamp as viewed from the radially outer side (upper side).

[0071] Fig.26 This is a perspective view of the first example of the rotation-side pad clamp as viewed from the radially inner side (lower side).

[0072] Fig. 27 This is a front view showing a first clamp of the turn-out side pad clamp constituting the first example of the embodiment of the present invention, which is removed and shown.

[0073] Fig.28 is from Fig. 27 A diagram showing the first clamp constituting the rotation-side pad clamp of the first example, as viewed from the upper side.

[0074] Fig.29 is from Fig. 27 A diagram showing the first clamp constituting the first example of the rotation-side pad clamp as viewed from the lower side.

[0075] Fig.30 is from Fig. 27 A diagram showing the first clamp constituting the rotation-side pad clamp of the first example as viewed from the right side.

[0076] Fig.31 is from Fig. 27A diagram of the first clamp constituting the rotation-side pad clamp of the first example, as viewed from the left side.

[0077] Fig.32 This is a perspective view of the first clamp constituting the rotation-outside pad clamp of the first example, as viewed from the radially outer side (upper side).

[0078] Fig.33 This is a perspective view of the first clamp constituting the rotation-out side pad clamp of the first example, as viewed from the radially inner side (lower side).

[0079] Fig.34 This is a front view showing a second clamp constituting the turn-out side pad clamp of the first example of the embodiment of the present invention, which is removed and shown.

[0080] Fig.35 is from Fig.34 A diagram showing a second fixture constituting the rotation-side pad fixture of the first example, as viewed from the upper side.

[0081] Fig.36 is from Fig.34 A diagram showing the second fixture constituting the rotation-side pad fixture of the first example, as viewed from the lower side.

[0082] Fig.37 is from Fig.34 A diagram showing the second fixture constituting the rotation-side pad fixture of the first example as viewed from the right side.

[0083] Fig.38 is from Fig.34 A diagram showing the second fixture constituting the rotation-side pad fixture of the first example as viewed from the left side.

[0084] Fig.39 This is a perspective view of the second clamp constituting the rotation-outside pad clamp of the first example, as viewed from the radially outer side (upper side).

[0085] Fig.40 This is a perspective view of the second clamp constituting the rotation-out side pad clamp of the first example, as viewed from the radially inner side (lower side).

[0086] Fig.41 It is a cross-sectional view for explaining the suppression of the tilt of the roll-out side pad clamp of the first example.

[0087] Fig.42 This is a front view showing a rotation-in side pad clamp assembled in the disc brake device of the first example.

[0088] Fig.43 is from Fig.42 Figure viewed from the upper side.

[0089] Fig.44 is from Fig.42 Figure viewed from the bottom.

[0090] Fig.45 is from Fig.42 The left side observation diagram.

[0091] Fig.46 This is a perspective view showing a rotation-in side pad clamp assembled in the disc brake device of the first example.

[0092] Fig.47 The present invention is a disc brake device equipped with a second example of a turn-out side pad clamp. Fig.10 Quite a picture. DETAILED DESCRIPTION

[0093] [First example]

[0094] use Figure 1 to Figure 46 A first example of an embodiment of the present invention will be described.

[0095] This example is an example in which the pad clip for a disc brake device of the present invention is applied to an opposed piston type disc brake device used for braking of an automobile.

[0096] Before describing in detail the structure of the rotation-out side pad clamp 5 of this example, the overall structure of the disc brake device 1 will be described.

[0097] In the following description, the axial direction, the circumferential direction, and the radial direction refer to the disc-shaped rotor 7 (see FIG. 1 ) that rotates together with the wheel unless otherwise specified. Figure 2 ) in the axial, circumferential and radial directions. Figure 1 , Figure 6 , Figure 7 , Fig.10 , Fig.11 , Fig.14 , Fig.15 , Fig.17 and Fig.18 The inside and outside directions, Figure 2 , Figure 3 , Figure 8 , Fig. 9 , Fig.12 , Fig.13 and Fig.16 The up and down direction, Fig.19 The left and right directions of are respectively equivalent to the axial direction, and the side close to the rotor 7 in the axial direction is called the axial inner side, and the side away from the rotor 7 in the axial direction is called the axial outer side. Figure 1 to Figure 3 , Figure 6 to Figure 18 The left and right directions Fig.19 The inner and outer directions of Figure 1 to Figure 3 , Figure 6 to Figure 18 on the right side, Fig.19 The surface side of Figure 1 to Figure 3 , Figure 6 to Figure 18 The left side of Fig.19 The inner side of each of the two sides is called the other side in the circumferential direction. In this example, the one side in the circumferential direction is the turning-in side when the vehicle moves forward, and the other side in the circumferential direction is the turning-out side when the vehicle moves forward. Figure 1 , Figure 6 , Figure 7 , Fig.10 , Fig.11 , Fig.14 , Fig.15 , Figure 17 to Figure 19 The up and down direction, Figure 2 , Figure 3 , Figure 8 , Fig. 9 , Fig.12 , Fig.13 and Fig.16 The inner and outer directions of are equivalent to the radial direction, Figure 1 , Figure 6 , Figure 7 , Fig.10 , Fig.11 , Fig.14 , Fig.15 , Figure 17 to Figure 19 The upper side of Figure 2 , Figure 8 , Fig. 9 and Fig.12 The surface side, Figure 3 , Fig.13 and Fig.16 The inner and outer sides are radially outer, Figure 1 , Figure 6 , Figure 7 , Fig.10 , Fig.11 , Fig.14 , Fig.15 , Figure 17 to Figure 19 The lower side of Figure 2 , Figure 8 , Fig. 9 and Fig.12 The inside of Figure 3 , Fig.13 and Fig.16 The front side of the rotor 7 is the radial inner side. In addition, the rotation-in side refers to the side where the rotor 7 enters relative to the brake caliper 2, and the rotation-out side refers to the side where the rotor 7 escapes from the brake caliper 2. Axial observation refers to the situation of observing from the axial direction of the rotor 7, and radial observation refers to the situation of observing from the radial direction of the rotor 7.

[0098] [Structural description of disc brake device]

[0099] The disc brake device 1 of this example is an opposed piston disc brake device used for braking an automobile, and includes a brake caliper 2, a pair of pads 3 and 4 (an inner pad 3 and an outer pad 4), a turn-out side pad fixture 5, and a turn-in side pad fixture 6. In the present invention, the turn-out side pad fixture 5 is equivalent to the pad fixture for the disc brake device described in the claims.

[0100] 〈Brake caliper〉

[0101] The brake caliper 2 supports an inner pad 3 and an outer pad 4 so as to be movable in the axial direction, and is integrally formed by casting a material made of a light alloy such as an aluminum alloy or an iron-based alloy.

[0102] The brake caliper 2 includes: an inner body 8 and an outer body 9, which are arranged to sandwich the rotor 7; an inward end bridge 10 and an outward end bridge 11, which connect the ends of the inner body 8 and the outer body 9 on both sides of the circumferential direction in the axial direction; a center bridge 12, which connects the circumferential middle parts of the inner body 8 and the outer body 9 in the axial direction; and an inward circumferential bridge 13 and an outward circumferential bridge 14. In the present invention, the outward end bridge 11 is equivalent to the end bridge described in the claims, and the outward circumferential bridge 14 is equivalent to the circumferential bridge described in the claims.

[0103] Inner and outer subjects

[0104] The inner body 8 is arranged at a position closer to the center of the vehicle body than the rotor 7 in the axial direction. The outer body 9 is arranged at a position closer to the outside of the vehicle body than the rotor 7 in the axial direction.

[0105] The inner body 8 has a plurality of (five in the illustrated example) inner cylinder bodies 15. An inner piston 17 is embedded in the inner cylinder body 15 in a manner that allows axial displacement. The outer body 9 has the same number of outer cylinder bodies 16 as the inner cylinder bodies 15. An outer piston 18 is embedded in the outer cylinder body 16 in a manner that allows axial displacement.

[0106] The brake caliper 2 is supported and fixed to the knuckle of the suspension device via a mounting seat 19 provided on the inner body 8 in a state where the brake caliper 2 covers the rotor 7 from the radially outer side.

[0107] The inner body 8 and the outer body 9 each include a pin 20 at a radially inner portion of one circumferential side portion. The pair of pins 20 are supported and fixed (fixedly arranged) coaxially with each other.

[0108] The tip of the pin 20 protrudes from the mutually opposed axial inner side surfaces of the inner body 8 and the outer body 9, and faces the axial side surfaces of the rotor 7 with a gap therebetween. The portion of the pin 20 protruding from the axial inner side surfaces of the inner body 8 and the outer body 9 is substantially cylindrical, and has a cylindrical outer peripheral surface shape. The pin 20 engages with the through hole 36, which is described later, provided in the inner pad 3 and the outer pad 4, respectively, during forward braking, and supports the braking tangential force F1 (see FIG. 1 ) acting on the inner pad 3 and the outer pad 4. Figure 7 ).

[0109] The Bridge

[0110] The transfer-in-side end bridge 10 is arranged radially outward from the outer peripheral edge of the rotor 7. The transfer-in-side end bridge 10 connects one circumferential side portion of the inner body 8 and one circumferential side portion of the outer body 9 in the axial direction.

[0111] The outgoing end bridge 11 is arranged radially outward from the outer peripheral edge of the rotor 7. The outgoing end bridge 11 connects the other circumferential side portion of the inner body 8 and the other circumferential side portion of the outer body 9 in the axial direction.

[0112] The inward-side end bridge 10 and the outward-side end bridge 11 have a partially cylindrical shape curved in an arc shape, and cover the rotor 7 from the radially outer side.

[0113] like Figure 7 As shown, the side surface of the other circumferential side of the transfer-in side end bridge 10 that is circumferentially opposite to the center bridge 12 has a pair of flat torque bearing surfaces 21 on both sides of the connection portion connected to the transfer-in side circumferential bridge 13 in the axial direction. The torque bearing surface 21 exists in contact with the braking tangential forces F1 and F2 (refer to Figure 7 ) is on an imaginary plane perpendicular to the direction of the line of action of the inner lining block 3 and the outer lining block 4. During reverse braking, the torque receiving surface 21 abuts against the torque transmitting surface 37 described later, which is respectively provided on the inner lining block 3 and the outer lining block 4, thereby supporting the braking tangential force F2 acting on the inner lining block 3 and the outer lining block 4 respectively.

[0114] like Figure 8 as well as Fig.11 As shown, the radially outer portion of the end portion on one circumferential side of the outgoing side end bridge 11, which is located on both sides of the end portion on the other circumferential side of the outgoing side circumferential bridge 14 in the axial direction, has a receiving recess 22, and the receiving recess 22 has a substantially rectangular cross-sectional shape. The ear portions 38, which are respectively provided on the inner liner block 3 and the outer liner block 4, are received in the receiving recess 22.

[0115] The radially outer side surface of the end portion of the outgoing side end bridge 11 on one circumferential side, and the portions located on both sides of the end portion of the outgoing side circumferential bridge 14 on the other circumferential side in the axial direction, respectively have a pair of flat surface-shaped torque support surfaces 23. The torque support surface 23 constitutes the bottom surface of the storage recess 22, and exists on an imaginary plane that is substantially orthogonal to the torque bearing surface 21. During forward braking and reverse braking, the torque support surface 23 presses the ear portion 38, which will be described later, provided on the inner lining block 3 and the outer lining block 4. The torque support surface 23 supports the torque force acting on the inner lining block 3 and the outer lining block 4.

[0116] like Fig.10 As shown, the outgoing side end bridge 11 has an outgoing side pressed surface 24 in a portion located radially inward of a connection portion connected to the outgoing side circumferential bridge 14 in the side surface on one circumferential side. The outgoing side pressed surface 24 faces one circumferential side and exists on an imaginary plane that is substantially orthogonal to the moment support surface 23.

[0117] The outgoing side end bridge 11 has a recessed portion 25 in the axial middle portion of the radially inner side surface of the end portion on one circumferential side. The end portion on the circumferential side of the bottom surface of the recessed portion 25 is connected to the radially inner end portion of the outgoing side pressed surface 24. The recessed portion 25 is provided with an inner clamping portion 54, which will be described later and constitutes the outgoing side pad fixture 5.

[0118] The bottom surface of the recess 25 has an engaging inclined surface 26, which is inclined in a direction that is radially inward as it is circumferentially directed toward one side. The engaging inclined surface 26 is circumferentially engaged with a circumferential engaging portion 59 described later provided by the turn-out side pad fixture 5. The inclination angle of the engaging inclined surface 26 relative to the moment support surface 23 is not particularly limited, and can be set to be, for example, not less than 15 degrees and not more than 30 degrees. The inclination angle of the engaging inclined surface 26 relative to the moment support surface 23 is 20 degrees in the example shown in the figure.

[0119] Central Bridge

[0120] The center bridge 12 is arranged at a position radially outward from the outer peripheral edge of the rotor 7. The center bridge 12 is arranged in the portion between the inward end bridge 10 and the outward end bridge 11 in the circumferential direction, and axially connects the circumferential center of the inner body 8 and the circumferential center of the outer body 9. The center bridge 12 has a partially cylindrical shape curved in an arc shape, and covers the rotor 7 from the radially outer side.

[0121] like Fig.11 As shown, the center bridge 12 has a center-side pressed surface 27 in portions located on both sides of the connection portion with the output-side circumferential bridge 14 in the axial direction, among the side surfaces on the other circumferential side.

[0122] The center side pressed surface 27 has a first inclined surface 28 on the radial inner side that is inclined toward the other side in the circumferential direction as it goes radially outward, and has a second inclined surface 29 on the radial outer side adjacent to the first inclined surface 28 that is inclined toward one side in the circumferential direction as it goes radially outward.

[0123] Zhou Xiang Bridge

[0124] The inward-side circumferential bridge 13 and the outward-side circumferential bridge 14 are respectively arranged on the radially outer side of the rotor 7 .

[0125] The turning-in-side circumferential bridge 13 is provided across the turning-in-side end bridge 10 and the center bridge 12 in the circumferential direction, and connects the turning-in-side end bridge 10 and the center bridge 12 in the circumferential direction.

[0126] The end of one circumferential side of the transfer-in side circumferential bridge 13 is connected to the axial middle portion of the side surface of the other circumferential side of the transfer-in side end bridge 10, and the end of the other circumferential side of the transfer-in side circumferential bridge 13 is connected to the axial middle portion of the side surface of one circumferential side of the center bridge 12. The transfer-in side circumferential bridge 13 is arranged in the circumferential direction so as to cover the outer peripheral edge of the rotor 7 from the radial outside.

[0127] The outgoing-side circumferential bridge 14 is provided across the outgoing-side end bridge 11 and the center bridge 12 in the circumferential direction, and connects the outgoing-side end bridge 11 and the center bridge 12 in the circumferential direction.

[0128] The end of the outgoing circumferential bridge 14 on the other circumferential side is connected to the axial middle portion of the side surface on one circumferential side of the outgoing end bridge 11, and the end of the outgoing circumferential bridge 14 on the one circumferential side is connected to the axial middle portion of the side surface on the other circumferential side of the center bridge 12. The outgoing circumferential bridge 14 is arranged in the circumferential direction so as to cover the outer peripheral edge of the rotor 7.

[0129] like Figure 6 and Fig.10 As shown, the outward-side circumferential bridge 14 has a flat pressed surface 32 at the circumferential middle portion of the radially inner surface. The pressed surface 32 is arranged substantially parallel to the moment support surface 23 .

[0130] 〈Inner lining block and outer lining block〉

[0131] The inner lining block 3 and the outer lining block 4 each include an inner lining (friction material) 33 and a metal back plate (pressure plate) 34 that supports the back surface of the inner lining 33 .

[0132] The back plate 34 has a protruding portion 35 extending circumferentially from the inner lining 33 at the radially inner side of the end portion on one circumferential side. The protruding portion 35 has a substantially rectangular through hole 36 penetrating in the axial direction at a portion radially inward of the line of action of the braking tangential force (friction surface center point A) acting during braking.

[0133] The back plate 34 has a flat torque transmission surface 37 facing the torque receiving surface 21 in the circumferential direction at an end portion radially outward of the lines of action of the braking tangential forces F1 and F2 acting during braking among the side surfaces on one circumferential direction.

[0134] The back plate 34 has a convex ear portion 38 protruding toward the other circumferential side at the radially outer end of the other circumferential side. The ear portion 38 has its radially inner side surface abutted against the moment support surface 23 during forward braking and reverse braking, thereby supporting the moment (rotational force) acting on the inner pad 3 and the outer pad 4, respectively.

[0135] In order to support the inner pad 3 and the outer pad 4 so as to be movable in the axial direction relative to the brake caliper 2, the pin 20 supported by the inner body 8 and the outer body 9 is loosely inserted in the axial direction into the through hole 36 provided in the back plate 34. In addition, the ear portion 38 provided in the back plate 34 is received in the receiving recess 22 provided in the swing-out side end bridge 11, and is engaged with the receiving recess 22 in a manner that allows movement in the axial direction. In this state, the torque transmission surface 37 provided on the side surface of one circumferential side of the back plate 34 is circumferentially opposed to the torque receiving surface 21 provided on the swing-in side end bridge 10.

[0136] 〈Pad clamp〉

[0137] The disc brake device 1 of this example includes a rotation-out side pad clamp 5 and a rotation-in side pad clamp 6. The rotation-out side pad clamp 5 and the rotation-in side pad clamp 6 are attached to the brake caliper 2.

[0138] The outward pad clamp 5 disposed on the other circumferential side presses the other circumferential side portion of the outer peripheral edge portion of the back plate 34 of each of the inner pad 3 and the outer pad 4 toward the radially inner side using a pair of pad pressing portions 40 a and 40 b.

[0139] The transfer-in side pad clamp 6 disposed on one side in the circumferential direction presses one side portion of the outer peripheral edge portion of each back plate 34 of the inner pad 3 and the outer pad 4 in the circumferential direction toward the radially inner side by means of a pair of transfer-in side pad pressing portions 62 a and 62 b .

[0140] 〈About the torque acting during braking〉

[0141] The disc brake device 1 of this example generates moments in the same direction on the inner pad 3 and the outer pad 4 during braking.

[0142] When braking forward, Figure 7 As shown, toward the other side of the circumference ( Figure 7The braking tangential force F1 (left side, outward side) acts on the friction surface center point A of the inner lining 33. In addition, the through hole 36 engages with the pin 20 to support the braking tangential force F1 (becoming a so-called anchor structure). Therefore, during forward braking, a moment M1 acts on the inner lining block 3 and the outer lining block 4 in a direction that presses the other side of the circumference radially inward. In addition, the friction surface center point A is the centroid of the friction surface, which is determined by the diameter and configuration of the piston.

[0143] In contrast, during reverse braking, the Figure 7 The braking tangential force F2 (on the right side, the turning-in side) acts on the friction surface center point A of the inner lining 33. Moreover, the torque transmission surface 37 is brought into contact with the torque receiving surface 21 via the clamped plate portions 72a and 72b described later constituting the turning-in side pad clamp 6, thereby supporting the braking tangential force F2 (becoming a so-called push-anchor structure). Therefore, during reverse braking, a moment M2 in the direction of pressing the other circumferential side portion radially inward (the same direction as the moment M1) acts on the inner lining 3 and the outer lining 4.

[0144] According to the disc brake device 1 of this example, the directions of the moments M1 and M2 acting on the inner pad 3 and the outer pad 4 can be made consistent during forward braking and reverse braking. Therefore, even when forward braking and reverse braking are repeated, such as when entering a garage, the inner pad 3 and the outer pad 4 can be kept in a counterclockwise rotation state. Therefore, it is possible to achieve this without changing the postures of the inner pad 3 and the outer pad 4, thereby suppressing the generation of the impact sound.

[0145] [Detailed structure of the pad fixture on the rotating side]

[0146] Hereinafter, the structure of the turning-out side pad clamp 5 of this example will be described.

[0147] The outgoing pad clamp 5 is installed between the outgoing end bridge 11 and the center bridge 12. The outgoing pad clamp 5 includes: a main body 39, which is elastically supported between the outgoing end bridge 11 and the center bridge 12; and a pair of pad pressing parts 40a, 40b, which press the outer peripheral edge parts of the inner pad 3 and the outer pad 4 toward the radial inside.

[0148] The outward-side pad clamp 5 of this example has a function of elastically pressing the inner pad 3 and the outer pad 4 toward the radial inside, and a function of covering the moment support surface 23 and preventing rust between the inner pad 3 and the outer pad 4 and the caliper 2 .

[0149] The roll-out side pad clamp 5 of this example is composed of a first clamp 41 made of a metal plate having a main body portion 39 and a pair of pad pressing portions 40a, 40b, and a second clamp 42 made of a metal plate assembled to the roll-out side end bridge 11. That is, the roll-out side pad clamp 5 is composed of two clamps, the first clamp 41 and the second clamp 42.

[0150] However, the pad clamp involved in one embodiment of the present invention may have only the function of elastically pressing the inner pad and the outer pad toward the radial inside. In this case, the pad clamp can be composed of a clamp (first clamp) having a main body and a pair of pad pressing parts.

[0151] In the rotation-out side pad clamp 5 of this example, the first clamp 41 and the second clamp 42 are engaged in the axial direction and the radial direction, and are in contact with each other in the circumferential direction.

[0152] In this example, the first clamp 41 has the function of elastically pressing the inner pad 3 and the outer pad 4 toward the radial inside and pushing them back axially, and the second clamp 42 has the function of covering the torque support surface 23 and preventing rust between the inner pad 3, the outer pad 4 and the brake caliper 2.

[0153] 〈First clamp〉

[0154] like Figure 27 to Figure 33 As shown, the first clamp 41 is formed by bending a metal plate having elasticity and corrosion resistance such as a stainless steel plate. The first clamp 41 has an axially symmetrical shape. The first clamp 41 has a substantially cross shape when viewed in the radial direction.

[0155] The first clamp 41 is elastically installed between the swing-out side end bridge 11 and the center bridge 12 .

[0156] The first clamp 41 of this example includes a pair of first axial direction restriction portions 43 a and 43 b and a radial direction restriction portion 44 in addition to the main body portion 39 and the pair of pad pressing portions 40 a and 40 b .

[0157] Main body

[0158] Most of the main body portion 39 is disposed radially inward of the exit-side circumferential bridge 14 , and is elastically supported between the exit-side end bridge 11 and the center bridge 12 .

[0159] The main body portion 39 includes a base plate portion 45 provided at a circumferentially intermediate portion, two first fixing portions 46 a and 46 b provided at one end portion in the circumferential direction, and a second fixing portion 47 provided at the other end portion in the circumferential direction.

[0160] The main body 39 is elastically supported between the exit-side end bridge 11 and the center bridge 12 by circumferentially pressing the first fixing portions 46a and 46b against the central side pressed surface 27 provided by the center bridge 12 and indirectly pressing the second fixing portion 47 against the exit-side pressed surface 24 provided by the exit-side end bridge 11. In other words, the circumferential position of the main body 39 is restricted by the exit-side end bridge 11 and the center bridge 12.

[0161] The base plate portion 45 has a flat plate shape. The axial dimension of the base plate portion 45 is substantially the same as the axial dimension of the swing-out side circumferential bridge 14 . The circumferential dimension of the base plate portion 45 is slightly larger than the circumferential dimension of the pressed surface 32 of the swing-out side circumferential bridge 14 .

[0162] When the first clamp 41 is assembled to the brake caliper 2, the base plate portion 45 is arranged radially inward of the circumferential middle portion of the outward-side circumferential bridge 14. Fig.10 As shown, the base plate portion 45 is pressed against the pressed surface 32 in a state where the inner pad 3 and the outer pad 4 are assembled to the brake caliper 2 .

[0163] The first fixing portions 46a and 46b have a substantially L-shape when viewed in the radial direction, and are connected to both axially outer ends of one circumferential end of the base plate portion 45. The first fixing portions 46a and 46b are arranged spaced apart in the axial direction.

[0164] The first fixing portion 46a, 46b includes an axial plate portion 48a, 48b extending from an end portion of one circumferential side of the base plate portion 45 toward the axial outer side, and a circumferential plate portion 49a, 49b extending from a terminal end portion of the axial plate portion 48a, 48b toward the radial outer side as it moves toward one circumferential side. The inclination angle of the circumferential plate portion 49a, 49b relative to the base plate portion 45 is not particularly limited, but is approximately 40 degrees in the example shown in the figure.

[0165] like Figure 8 As shown, in a state where the first clamp 41 is assembled to the brake caliper 2 , the first fixing portions 46 a and 46 b are arranged on both sides of the outward-side circumferential bridge 14 in the axial direction.

[0166] The first fixing portion 46a, 46b has a first folded portion 50a, 50b at the terminal end of the circumferential plate portion 49a, 49b. The first folded portion 50a, 50b is formed by folding the terminal end of the circumferential plate portion 49a, 49b back about 140 degrees radially outward and circumferentially to the other side. The side surface of the first folded portion 50a, 50b on one circumferential side is formed by a convex curved surface.

[0167] In a state where the first clamp 41 is assembled to the brake caliper 2 , the first folded-back portions 50 a and 50 b press the second inclined surface 29 of the center-side pressed surface 27 provided in the center bridge 12 in the circumferential direction.

[0168] The second fixing portion 47 has a substantially horizontal J-shape when viewed in the axial direction, and is connected to an axially intermediate portion of the end portion on the other side in the circumferential direction of the base plate portion 45 .

[0169] The second fixing portion 47 extends from the axial middle portion of the end portion on the other circumferential side of the base plate portion 45 in a direction that is radially inward as it moves toward the other circumferential side. The inclination angle of the second fixing portion 47 relative to the base plate portion 45 is not particularly limited, but is approximately 40 degrees in the illustrated example. The second fixing portion 47 is arranged substantially parallel to the circumferential plate portions 49a, 49b of the first fixing portions 46a, 46b.

[0170] like Fig.17 As shown, in a state where the first clamp 41 is assembled to the brake caliper 2 , the second fixing portion 47 is arranged radially inward of the other circumferential side portion of the outward-side circumferential bridge 14 .

[0171] The second fixing portion 47 has a second folded portion 51 at the distal end. The second folded portion 51 folds the distal end of the second fixing portion 47 radially inward and circumferentially to one side by about 100 degrees. The second folded portion 51 has a shape that is bent in a convex shape on the other circumferential side, and the side surface on the other circumferential side is composed of a convex curved surface.

[0172] like Fig.10 as well as Fig.17 As shown, when the first clamp 41 is assembled to the brake caliper 2 , the second folded portion 51 is indirectly pressed against the outward-side pressed surface 24 of the outward-side end bridge 11 in the circumferential direction via an intervening portion 52 (described later) of the second clamp 42 .

[0173] 《Pad pressing section》

[0174] The pad pressing portions 40 a and 40 b press the inner pad 3 and the outer pad 4 to stabilize the postures of the inner pad 3 and the outer pad 4 in a non-braking state.

[0175] The pair of pad pressing portions 40 a and 40 b are arranged on both sides of the main body portion 39 in the axial direction, and are connected to both ends of the base plate portion 45 in the axial direction.

[0176] The pad pressing portions 40a, 40b have a horizontal U-shape when viewed in the circumferential direction and have a band plate shape. The pad pressing portions 40a, 40b extend axially outward from the base plate portion 45 and fold back approximately 180 degrees axially inward from their respective intermediate portions.

[0177] like Figure 27 to Figure 33As shown, the pad pressing portion 40a, 40b has a structure in which a radial outer portion 40a1, 40b1 extending from the base plate portion 45 toward the axial outside (axially away from the rotor 7) and a radial inner portion 40a2, 40b2 arranged radially inside the radial outer portion 40a1, 40b1 are connected by a bending portion 40a3, 40b3.

[0178] The radially outer portions 40a1 and 40b1 of the pad pressing portions 40a and 40b have a curved portion bent in a convex shape on the radially outer side in the axial middle portion. The curved portion is connected to the base plate portion 45 through a first straight portion extending in a straight line toward the axially outer side and in the radially outer side, and the curved portion is connected to the curved portions 40a3 and 40b3 through a second straight portion extending in a straight line toward the axially outer side and in the radially inner side. A through hole is formed within the range of the first straight portion, the curved portion, and the second straight portion constituting the radially outer portions 40a1 and 40b1, and the through hole is a long hole that is longer in the axial direction. The radially inner portions 40a2 and 40b of the pad pressing portions 40a and 40b extend in a straight line toward the axially inner side and in the radially inner side.

[0179] like Figure 8 As shown, in a state where the first clamp 41 is assembled to the brake caliper 2 , the pad pressing portions 40 a and 40 b are arranged on both sides of the outward-side circumferential bridge 14 in the axial direction.

[0180] When the inner pad 3 and the outer pad 4 are assembled, the pad pressing portions 40a and 40b are pressed radially outward by the outer peripheral edge of the back plate 34 and elastically deform (flex) in the radial direction. Thus, the outer peripheral edge of the back plate 34 is pressed radially inward and axially outward on the other side.

[0181] In this example, when the inner liner 3 and the outer liner 4 are assembled, the radially outer side surface of the substrate portion 45 constituting the main body portion 39 is pressed against the pressed surface 32 provided on the rotation-out side circumferential bridge 14 by the elastic force (reaction force) of the liner pressing portions 40a and 40b. Thus, the reaction force of the liner pressing portions 40a and 40b is supported by the rotation-out side circumferential bridge 14. In addition, the radial position of the main body portion 39 is restricted. The substrate portion 45 is in surface contact with the pressed surface 32.

[0182] 《First axial limiting part》

[0183] The first axial direction restricting portions 43 a , 43 b restrict the axial direction position of the first clamp 41 , and suppress the inclination of the first clamp 41 .

[0184] The first axial restricting portions 43a, 43b have a substantially L-shape when viewed in the axial direction, and are connected to both axial sides of the circumferential end of the base plate portion 45. Therefore, the first axial restricting portions 43a, 43a are arranged axially apart and axially between the pair of first fixing portions 46a, 46b.

[0185] In the first axial restricting portions 43a, 43b, the radially inner portion connected to the axial plate portions 48a, 48b is extended in the radially outer direction as it goes to one side in the circumferential direction, and is arranged substantially parallel to the circumferential plate portions 49a, 49b of the first fixing portions 46a, 46b. The length dimension of the radially inner portion of the first axial restricting portions 43a, 43b is approximately 1 / 2 of the length dimension of the circumferential plate portions 49a, 49b of the first fixing portions 46a, 46b.

[0186] The distal end (radially outer end) of the first axial restricting portions 43a, 43b is bent approximately 90 degrees relative to the radially inner portion of the first axial restricting portions 43a, 43b, and extends radially outward and circumferentially to the other side. The length dimension of the distal end of the first axial restricting portions 43a, 43b is smaller than the radial dimension of the rotation-out side circumferential bridge 14.

[0187] like Figure 8 As shown, when the first clamp 41 is assembled to the brake caliper 2 , the first axial restricting portions 43 a , 43 b are arranged on both sides of the outgoing circumferential bridge 14 in the axial direction, and are close to and opposite to both axial side surfaces of the outgoing circumferential bridge 14 .

[0188] The axial position of the first clamp 41 is restricted by causing the first axial restriction portions 43 a and 43 b to abut against the axial side surfaces of the output-side circumferential bridge 14 .

[0189] In addition, if Fig.41 As shown, when the inner liner 3 (or outer liner 4) is assembled, even when one liner pressing portion 40a (40b) is pressed radially outward by the outer peripheral edge of the back plate 34, one first axial limiting portion 43a (43b) abuts against the axial side surface of the rotation-out side circumferential bridge 14. Thus, it is possible to suppress the first clamp 41 from tilting in a manner in which one axial side portion rises radially outward and the other axial side portion falls radially inward.

[0190] 《Radial restriction section》

[0191] The radial direction restriction portion 44 prevents the contact positions of the first fixing portions 46 a and 46 b from being deviated radially outward from the normal positions.

[0192] The radial restriction portion 44 has a flat plate shape and is connected to the axial middle portion of the circumferential end of the base plate portion 45. Therefore, the radial restriction portion 44 is axially arranged between the pair of first axial restriction portions 43a and 43b. The radial restriction portion 44 is arranged substantially parallel to the base plate portion 45.

[0193] When the first clamp 41 is assembled to the brake caliper 2, the radial restriction portion 44 abuts against the radial inner side surface of the swing-out side circumferential bridge 14. Specifically, as described later, when the second fixing portion 47 is pushed upward to the radial outer side, the radial restriction portion 44 abuts against the radial inner side surface of the swing-out side circumferential bridge 14. Thus, the abutting position of the first folded-back portions 50a, 50b with respect to the central side pressed surface 27 of the central bridge 12 is prevented from being deviated radially outward from the normal position (a position slightly radially outward from the connecting portion of the second inclined surface 29 with the first inclined surface 28). The radial restriction portion 44 does not abut against the radial inner side surface of the swing-out side circumferential bridge 14 in the state after the first clamp 41 is assembled to the brake caliper 2.

[0194] 〈Second clamp〉

[0195] like Figures 34 to 40 As shown in FIG. 1 , the second jig 42 is formed by bending a single metal plate having elasticity and corrosion resistance such as a stainless steel plate. The second jig 42 has an axially symmetrical shape.

[0196] The second clamp 42 is assembled to the end portion on one side in the circumferential direction of the exit-side end bridge 11. In this example, the second clamp 42 is attached to the exit-side end bridge 11 by elastically clamping the end portion on one side in the circumferential direction of the exit-side end bridge 11 from both sides in the radial direction.

[0197] The second clamp 42 has an intervening portion 52. In this example, in addition to the intervening portion 52, the second clamp 42 also has two outer clamping portions 53a, 53b, an inner clamping portion 54, a pair of second axial restricting portions 55a, 55b, an axial engaging portion 56, and connecting plate portions 57a, 57b.

[0198] The intervening portion 52 is provided at an axially intermediate portion of the second jig 42. The intervening portion 52 stands in the radial direction and is provided at a circumferentially intermediate portion of the second jig 42.

[0199] The intervening portion 52 has a radial engaging portion 58 bent in a convex manner on one side in the circumferential direction in the radial middle portion. The radial engaging portion 58 has a substantially horizontal V-shape when viewed in the axial direction. The radially outer end of the intervening portion 52 is a free end, and the radially inner end is connected to the circumferential end of the inner clamping portion 54.

[0200] like Fig.10 and Fig.17As shown, in a state where the second clamp 42 is assembled to the brake caliper 2 , the intervening portion 52 is arranged radially inward of the other circumferential side portion of the outgoing-side circumferential bridge 14 , and covers the outgoing-side pressed surface 24 .

[0201] When the outgoing side pad clamp 5 is assembled to the brake caliper 2, the intervening portion 52 is arranged (clamped) between the outgoing side pressed surface 24 and the second folded portion 51 of the second fixing portion 47. Specifically, the tip of the second folded portion 51 abuts against the flat plate portion of the intervening portion 52 located radially outward of the radial engaging portion 58, and the second folded portion 51 is radially engaged with the radial engaging portion 58 (the second folded portion 51 presses the radial engaging portion 58 radially inward). Thus, the radial position (abutting position) of the second folded portion 51 is prevented from shifting radially inward.

[0202] The second clamp 42 is mounted on the outgoing-side end bridge 11 by elastically clamping the end portion of the outgoing-side end bridge 11 on one circumferential side from both radial sides by two outer clamping portions 53a, 53b and one inner clamping portion 54. Therefore, the radial position of the second clamp 42 is restricted by the outer clamping portions 53a, 53b and the inner clamping portion 54.

[0203] The outer clamping parts 53a and 53b are provided on the radially outer side of the second clamp 42. The outer clamping parts 53a and 53b are respectively in the shape of a flat plate and are arranged axially apart. The outer clamping parts 53a and 53b are sized to cover only most of the moment support surface 23 provided on the output-side end bridge 11.

[0204] like Figure 8 As shown, when the second clamp 42 is assembled to the brake caliper 2, the outer clamping parts 53a and 53b are arranged on both sides to clamp the end of the other circumferential side of the swing-out side circumferential bridge 14 in the axial direction. The outer clamping parts 53a and 53b cover the moment support surface 23 provided by the swing-out side end bridge 11 and elastically press the moment support surface 23 toward the radial inside. The outer clamping parts 53a and 53b are in surface contact with the moment support surface 23.

[0205] When the inner lining block 3 and the outer lining block 4 are assembled, the outer clamping portions 53a and 53b are clamped between the moment support surface 23 and the radial inner side surface of the ear portion 38 provided on the back plate 34. Therefore, during braking, the outer clamping portions 53a and 53b receive the moment force acting on the inner lining block 3 and the outer lining block 4. The outer clamping portions 53a and 53b reduce the drag resistance of the inner lining block 3 and the outer lining block 4 and prevent rust from forming between the moment support surface 23 and the radial inner side surface of the ear portion 38.

[0206] The inner clamping portion 54 is provided at the other circumferential end of the radially inner portion of the second clamp 42. The circumferential end of the inner clamping portion 54 is connected to the radially inner end of the intervening portion 52. The axial dimension of the inner clamping portion 54 is slightly larger than that of the intervening portion 52.

[0207] The inner clamping portion 54 has a corrugated plate shape. The inner clamping portion 54 protrudes to the other side in the circumferential direction than the outer clamping portions 53a and 53b. The inner clamping portion 54 has a circumferential engaging portion 59 at a portion protruding to the other side in the circumferential direction than the outer clamping portions 53a and 53b. The circumferential engaging portion 59 is bent in a convex shape on the radially outer side and has a substantially inverted V shape when viewed in the axial direction.

[0208] like Fig.10 and Fig.16 As shown in FIG. 1 , when the second clamp 42 is assembled to the brake caliper 2, the inner clamping portion 54 is arranged radially inward of the end portion of the swing-out side end bridge 11 on one circumferential side. At this time, the circumferential engaging portion 59 is arranged inside the recess 25 provided in the swing-out side end bridge 11, presses the engaging inclined surface 26 constituting the bottom surface of the recess 25 toward the radial outside, and engages with the engaging inclined surface 26 in the circumferential direction. By engaging the circumferential engaging portion 59 with the engaging inclined surface 26 in the circumferential direction, the second clamp 42 can be prevented from tilting in a manner of coming out of the swing-out side end bridge 11, and a gap can be prevented from being formed between the outer clamping portions 53a, 53b and the moment support surface 23.

[0209] The outer clamping parts 53a, 53b are connected to the inner clamping part 54 via connecting plates 57a, 57b. The connecting plates 57a, 57b are provided at the circumferential ends of the second clamp 42 and have a substantially L-shape when viewed in the axial direction.

[0210] The connecting plate portions 57a, 57b are composed of the vertical plate portions 60a, 60b and the horizontal plate portions 76a, 76b. The vertical plate portions 60a, 60b are bent at a substantially right angle from the end portions on one side of the circumferential direction of the outer clamping portions 53a, 53b toward the radial inner side. The horizontal plate portions 76a, 76b are bent from the radial inner end portions of the vertical plate portions 60a, 60b toward the other side of the circumferential direction and connected to the end portions on one side of the circumferential direction of the inner clamping portion 54. In the example shown in the figure, the horizontal plate portions 76a, 76b are bent about 80 degrees relative to the vertical plate portions 60a, 60b.

[0211] The vertical plate portions 60a and 60b each have a flat plate shape and are spaced apart in the axial direction. The vertical plate portions 60a and 60b are arranged to be offset to one side in the circumferential direction relative to the intervening portion 52. The vertical plate portions 60a and 60b have an axial dimension that is approximately the same as that of the outer clamping portions 53a and 53b.

[0212] The upright plate portions 60 a and 60 b cover the side surface of one circumferential direction side of the swing-out-side end bridge 11 in a state where the second clamp 42 is assembled to the brake caliper 2 .

[0213] The transverse plate portions 76a and 76b are respectively in the shape of flat plates and are arranged separately in the axial direction. The axial dimensions of the transverse plate portions 76a and 76b are smaller than those of the vertical plate portions 60a and 60b. The transverse plate portions 76a and 76b connect the axially inner ends of the vertical plate portions 60a and 60b to the axially outer ends of the inner clamping portion 54.

[0214] The axial engagement portion 56 has an axial width slightly larger than the axial width of the second fixing portion 47 of the first clamp 41 , and is engaged with the second fixing portion 47 in the axial direction.

[0215] In this example, the axial engagement portion 56 is provided between two connecting plate portions 57a and 57b that are axially spaced apart from each other in the second fixture 42. In other words, the axial engagement portion 56 is formed by the axially inner end edges of the two connecting plate portions 57a and 57b.

[0216] The axial engagement portion 56 is axially engaged with the end portion on the other circumferential side of the second fixing portion 47. Thus, the axial position of the second fixing portion 47 is restricted.

[0217] The second axial restricting portions 55a and 55b are close to and face both axial side surfaces of the exit-side circumferential bridge 14. Therefore, the axial position of the second clamp 42 is restricted by the second axial restricting portions 55a and 55b contacting the axial side surfaces of the exit-side circumferential bridge 14.

[0218] The second axial restriction portions 55a and 55b are provided at the axially inner end portions of the outer clamping portions 53a and 53b. The second axial restriction portions 55a and 55b are bent in a direction that goes radially outward as they go axially inward.

[0219] <How to install the liner clamp on the rotating side>

[0220] Before assembling the inner pad 3 and the outer pad 4 to the brake caliper 2, the swing-out side pad clamp 5 of this example is assembled in the following steps.

[0221] First, the second clamp 42 constituting the outgoing side pad clamp 5 is assembled to the brake caliper 2. Specifically, the outgoing side end bridge 11 is elastically clamped from both radial sides by two outer clamping portions 53a, 53b and one inner clamping portion 54 constituting the second clamp 42, and the second clamp 42 is assembled to the end portion of the outgoing side end bridge 11 on one circumferential side.

[0222] In a state where the second clamp 42 is assembled to the end portion of the exit-side end bridge 11 on one circumferential side, the outer clamping portions 53a and 53b cover the moment support surface 23 from the radially outer side, and the intervening portion 52 covers the exit-side pressed surface 24 from one circumferential side. The circumferential engagement portion 59 provided in the inner clamping portion 54 is arranged inside the recess 25 provided on the radially inner side surface of the exit-side end bridge 11, presses the engagement inclined surface 26 toward the radially outer side, and engages with the engagement inclined surface 26 in the circumferential direction. The second axial restricting portions 55a and 55b provided in the outer clamping portions 53a and 53b are close to and opposite to the axially opposite side surfaces of the exit-side circumferential bridge 14.

[0223] Next, the first clamp 41 constituting the rotation-out side pad clamp 5 is assembled to the brake caliper 2 to which the second clamp 42 is attached.

[0224] Specifically, the main body 39 of the first clamp 41 is arranged radially inside the output-side circumferential bridge 14, so that the first folded portions 50a, 50b of the first fixing portions 46a, 46b abut against the central side pressed surface 27 of the center bridge 12. At this time, the radial restriction portion 44 constituting the first clamp 41 does not abut against the radial inner side surface of the output-side circumferential bridge 14.

[0225] After that, the second fixing portion 47 is pushed upward toward the radial outer side, so that the second folded portion 51 is moved toward the radial outer side of the radial engaging portion 58 constituting the intervening portion 52. Then, the second folded portion 51 is pressed toward the pressed surface 24 on the outgoing side in the circumferential direction via the radial outer side portion of the intervening portion 52. Thus, the main body 39 of the first clamp 41 is assembled between the outgoing side end bridge 11 and the center bridge 12.

[0226] When the second folded portion 51 passes over the radial engaging portion 58 radially outward, a sound (clicking sound) and a click feeling are generated, so the operator who performs the installation operation of the first clamp 41 can confirm that the second folded portion 51 has passed over the radial engaging portion 58 and has been installed.

[0227] When the radial limiting portion 44 pushes the second fixing portion 47 radially outward, it abuts against the radial inner side surface of the rotation-side circumferential bridge 14 to prevent the radial position of the first return portion 50a, 50b relative to the central side pressed surface 27 of the center bridge 12 from being offset radially outward from the normal position.

[0228] When the first clamp 41 is assembled between the output-side end bridge 11 and the center bridge 12, the second fixing portion 47 is radially engaged with the radial engagement portion 58 of the second clamp 42, and is axially engaged with the axial engagement portion 56 of the second clamp 42. In addition, the first axial restricting portions 43a, 43b are disposed close to and opposite to the axial side surfaces of the output-side circumferential bridge 14.

[0229] 〔Detailed structure of the side pad fixture〕

[0230] Next, the structure of the transfer-in side pad clamp 6 of this example will be described.

[0231] The transfer-in side pad clamp 6 has the functions of pressing the inner pad 3 and the outer pad 4 radially inward, pressing the inner pad 3 and the outer pad 4 toward the other circumferential side, and preventing rust from forming between the torque transmission surface 37 and the torque receiving surface 21 .

[0232] like Figures 42 to 46 As shown, the transfer-in side pad fixture 6 is formed by bending a single metal plate having elasticity and corrosion resistance such as a stainless steel plate. The transfer-in side pad fixture 6 has an axially symmetrical shape.

[0233] The transfer-in side pad clamp 6 is elastically installed between the transfer-in side end bridge 10 and the center bridge 12 .

[0234] When the transfer-in side pad clamp 6 is assembled to the brake caliper 2, the radially outer half of the transfer-in side pad clamp 6 is arranged between the transfer-in side end bridge 10 and the center bridge 12. The radially inner half of the transfer-in side pad clamp 6 is arranged on one side of the inner pad 3 and the outer pad 4 in the circumferential direction.

[0235] The input-side pad clamp 6 has a plurality of structures common to the first clamps 41 constituting the output-side pad clamp 5 in the radially outer half.

[0236] The transfer-in side pad clamp 6 has a transfer-in side main body portion 61, a pair of transfer-in side pad pressing portions 62a, 62b, a pair of circumferential pressing portions 63a, 63b, a pair of transfer-in side first axial limiting portions 64a, 64b, a transfer-in side radial limiting portion 65, and transfer-in side second axial limiting portions 74a, 74b.

[0237] 《Transfer to the main body》

[0238] The turning-in-side body portion 61 is elastically supported between the turning-in-side end bridge 10 and the center bridge 12 .

[0239] The transfer-in side main body 61 is provided at the radially outer half of the transfer-in side pad fixture 6. The transfer-in side main body 61 includes: a transfer-in side base plate 66 in a flat plate shape provided at the circumferential middle portion; two transfer-in side first fixing portions 67a, 67b provided at the end portion on the other circumferential side; and a transfer-in side second fixing portion 68 provided at the end portion on one circumferential side.

[0240] The turning-in side main body portion 61 is elastically supported between the turning-in side end bridge 10 and the center bridge 12 by elastically pressing the turning-in side first fixing portions 67a, 67b in the circumferential direction against the side surface of one circumferential side of the center bridge 12, and installing the turning-in side second fixing portion 68 at the end portion of the turning-in side end bridge 10 on the other circumferential side.

[0241] When the transfer-in side pad clamp 6 is assembled to the brake caliper 2, the transfer-in side base plate portion 66 is arranged on the radial inner side of the transfer-in side circumferential bridge 13, but even after the inner pad 3 and the outer pad 4 are assembled to the brake caliper 2, the transfer-in side base plate portion 66 will not be pressed against the radial inner surface of the transfer-in side circumferential bridge 13.

[0242] The first transfer-in side fixing portions 67a, 67b have a substantially L-shape when viewed in the radial direction, and are connected to both axially outer ends of the other circumferential end of the transfer-in side substrate portion 66. The first transfer-in side fixing portions 67a, 67b are spaced apart in the axial direction.

[0243] like Fig. 9 As shown, in a state where the entering-side pad clamp 6 is assembled to the brake caliper 2 , the entering-side first fixing portions 67 a and 67 b are arranged on both sides of the entering-side circumferential bridge 13 in the axial direction.

[0244] The first turning-in side fixing parts 67a and 67b have first turning-in side folding parts 69a and 69b at the end. The first turning-in side folding parts 69a and 69b fold the end of the first turning-in side fixing parts 67a and 67b radially inward and circumferentially to one side by about 140 degrees. The side surface of the first turning-in side folding parts 69a and 69b on the other side in the circumferential direction is formed by a convex curved surface.

[0245] The second fixing portion 68 on the transfer-in side has: a circumferential connecting plate portion 70, which extends from the end portion on the circumferential side of the transfer-in side substrate portion 66 in a direction radially inward as it moves toward the circumferential side; and an axial extension portion 71, which is connected to the radially inner end portion of the circumferential connecting plate portion 70 at its axial middle portion.

[0246] The axially extending portion 71 has a substantially L-shape when viewed in the axial direction. The axially extending portion 71 extends outwardly from the circumferential connecting plate portion 70 in the axial direction. The axially extending portion 71 has a pair of clamped plate portions 72a and 72b and a radially engaging portion 73 on the transfer side.

[0247] The held plate portions 72 a and 72 b each have a flat plate shape and are arranged spaced apart in the axial direction. The held plate portions 72 a and 72 b stand in the radial direction and are provided at both axially outer end portions of the axially extending portion 71 .

[0248] like Figure 7As shown, when the transfer-in side pad clamp 6 is assembled to the brake caliper 2, the clamped plate portions 72a, 72b press the torque receiving surface 21 of the transfer-in side end bridge 10 in the circumferential direction and cover the torque receiving surface 21. When the inner pad 3 and the outer pad 4 are assembled to the brake caliper 2, the clamped plate portions 72a, 72b are arranged between the torque receiving surface 21 and the torque transmission surface 37 of the back plate 34.

[0249] The entering-side radial engagement portion 73 extends toward one side in the circumferential direction from the axially intermediate portion of the axially extending portion 71. The entering-side radial engagement portion 73 has an inverted V-shape when viewed in the axial direction.

[0250] like Figure 6 As shown in the figure, when the transfer-in side pad clamp 6 is assembled to the brake caliper 2, the transfer-in side radial engaging portion 73 is arranged radially inside the end portion on the other circumferential side of the transfer-in side end bridge 10. The transfer-in side radial engaging portion 73 presses the radial inner side surface of the transfer-in side end bridge 10 toward the radial outer side. Thus, the radial position of the end portion on one circumferential side of the transfer-in side pad clamp 6 is restricted.

[0251] 《Transfer to the side pad pressing section》

[0252] The transfer-in side pad pressing portions 62 a and 62 b press the inner pad 3 and the outer pad 4 , thereby stabilizing the postures of the inner pad 3 and the outer pad 4 in a non-braking state.

[0253] The pair of entry-side pad pressing portions 62 a and 62 b are arranged on both sides of the entry-side base plate portion 66 in the axial direction, and are connected to both ends of the entry-side base plate portion 66 in the axial direction.

[0254] The entry-side pad pressing portions 62a, 62b have a horizontal U-shape when viewed in the circumferential direction, extend axially outward from the entry-side base plate portion 66, and are folded back approximately 180 degrees radially inward and axially inward starting from respective intermediate portions.

[0255] The front half of the entry-side pad pressing portions 62a and 62b are inclined in a direction that is radially inward as they are axially inward in a free state.

[0256] like Fig. 9 As shown, in a state where the incoming-side pad clamp 6 is assembled to the brake caliper 2 , the incoming-side pad pressing portions 62 a and 62 b are arranged on both sides of the incoming-side circumferential bridge 13 in the axial direction.

[0257] When the inner pad 3 and the outer pad 4 are assembled, the transfer-in pad pressing portions 62a and 62b are pressed radially outward by the outer peripheral edge of the back plate 34 and elastically deform (flex) in the radial direction. Thus, one circumferential side portion of the outer peripheral edge of the back plate 34 is pressed radially inward and axially outward.

[0258] 《Circumferential pressing part》

[0259] The circumferential pressing portions 63a and 63b extend radially inward from the ends of the axially extending portion 71 on both sides of the axial direction, which constitute the second fixing portion 68 on the transfer side. The circumferential pressing portions 63a and 63b have a band plate shape extending in the radial direction. The circumferential pressing portions 63a and 63b are separated in the axial direction and arranged substantially parallel to each other.

[0260] When the inner liner block 3 and the outer liner block 4 are assembled, the circumferential pressing portions 63a and 63b are pressed by the circumferential side surface of the back plate 34 and elastically deformed (flexed) in the circumferential direction, thereby pressing the circumferential side surface of the back plate 34 toward the other circumferential side.

[0261] Thus, in the non-braking state, the outer peripheral surface of the pin 20 is brought into contact with the side surface on one circumferential side of the inner peripheral surface of the through hole 36. Therefore, during forward braking, even if the braking tangential force F1 acts on the inner pad 3 and the outer pad 4, the inner pad 3 and the outer pad 4 can be prevented from moving to the other circumferential side, and the inner peripheral surface of the through hole 36 can be prevented from colliding with the pin 20. As a result, the generation of abnormal noise caused by the collision between the through hole 36 and the pin 20 can be suppressed.

[0262] 《First axial restriction section on the transfer side》

[0263] The first transfer-in-side axial direction restricting portions 64 a , 64 b restrict the axial direction position of the transfer-in-side pad clamp 6 , and suppress the inclination of the transfer-in-side pad clamp 6 .

[0264] The first transfer-in side axial restriction portions 64a, 64b have a substantially L-shape when viewed in the axial direction, and are connected to both axial sides of the end portion on the other circumferential side of the transfer-in side substrate portion 66. Therefore, the first transfer-in side axial restriction portions 64a, 64b are arranged separately in the axial direction, and are arranged in the axial direction between the pair of transfer-in side first fixing portions 67a, 67b.

[0265] The radially inner portion of the first entering-side axial restricting portions 64a and 64b connected to the first entering-side fixing portions 67a and 67b extends radially outward toward the other circumferential side and is arranged substantially parallel to the base end portion of the first entering-side fixing portions 67a and 67b.

[0266] The distal ends (radially outer ends) of the first turning-in-side axial restriction portions 64a, 64b are bent approximately 90 degrees relative to the radially inner portions of the first turning-in-side axial restriction portions 64a, 64b, and extend radially outward and circumferentially toward one side.

[0267] like Fig. 9As shown, when the entry-side pad clamp 6 is assembled to the brake caliper 2, the entry-side first axial limiting portions 64a, 64b are arranged on both sides axially clamping the entry-side circumferential bridge 13, close to and opposite to the axial side surfaces of the entry-side circumferential bridge 13.

[0268] The axial position of the other circumferential side portion of the entry-side pad clip 6 is restricted by causing the entry-side first axial restriction portions 64 a , 64 b to abut against the axial side surface of the entry-side circumferential bridge 13 .

[0269] In addition, Fig.41 Similarly, when assembling the inner pad 3 (or the outer pad 4), even when one of the transfer-in side pad pressing portions 62a (62b) is pressed radially outward by the outer peripheral edge of the back plate 34, one of the transfer-in side first axial limiting portions 64a (64b) abuts against the axial side surface of the transfer-in side circumferential bridge 13. Thus, the transfer-in side pad fixture 6 is restrained from tilting in a manner in which one axial side portion rises radially outward and the other axial side portion falls radially inward.

[0270] 《Transfer-in side radial restriction section》

[0271] The transfer-in-side radial restriction portion 65 restricts the radial position of the transfer-in-side pad clamp 6 .

[0272] The transfer-in side radial restriction portion 65 has a flat plate shape and is connected to the axial middle portion of the end portion on the other circumferential side of the transfer-in side substrate portion 66. Therefore, the transfer-in side radial restriction portion 65 is axially arranged between the pair of transfer-in side first axial restriction portions 64a and 64b. The transfer-in side radial restriction portion 65 is arranged substantially parallel to the transfer-in side substrate portion 66.

[0273] When the inward pad clip 6 is assembled to the brake caliper 2, the inward radial restriction portion 65 contacts the radial inner surface of the inward circumferential bridge 13. This restricts the radial position of the other circumferential end of the inward pad clip 6.

[0274] 《Second axial restriction section on the transfer side》

[0275] The second entry-side axial direction restricting portions 74 a , 74 b restrict the axial direction position of the entry-side pad clamp 6 .

[0276] like Fig. 9 As shown, the second axial restriction portions 74a and 74b on the turning-in side are close to and opposite to the axial sides of the turning-in side circumferential bridge 13. The second axial restriction portions 74a and 74b on the turning-in side are provided at the ends on the axial inner side of the clamped plate portions 72a and 72b. The second axial restriction portions 74a and 74b on the turning-in side have a substantially L-shape when viewed in the axial direction, extend radially outward from the clamped plate portions 72a and 72b, and bend substantially at a right angle from the ends on the radial outer side toward one side in the circumferential direction.

[0277] The axial position of one circumferential side portion of the entry-side pad clip 6 is restricted by causing the entry-side second axial restriction portions 74 a , 74 b to abut against the axial side surface of the entry-side circumferential bridge 13 .

[0278] The above-described output-side pad clamp 5 of this example can be applied to the disc brake device 1 including the output-side circumferential bridge 14 , and can stably apply pressing force to the pair of pads 3 , 4 .

[0279] The rotation-side pad clamp 5 of this example comprises: a main body 39, which is elastically supported between the center bridge 12 and the rotation-side end bridge 11; and a pair of pad pressing portions 40a, 40b, which press the outer peripheral edge portions of the back plates 34 of the inner pad 3 and the outer pad 4 toward the radial inside, wherein the radial outer side surface of the main body 39 is pressed toward the radial inner side surface of the rotation-side circumferential bridge 14 by the elastic force of the pair of pad pressing portions 40a, 40b.

[0280] As described above, the output side pad clamp 5 of this example can be applied to the disc brake device 1 including the output side circumferential bridge 14 because the main body portion 39 elastically supported between the center bridge 12 and the output side end bridge 11 is arranged radially inside the output side circumferential bridge 14 .

[0281] Furthermore, the radially outer side surface of the main body 39 is pressed against the radially inner side surface of the pivot-out side circumferential bridge 14, so that the reaction force of the pad pressing portions 40a and 40b can be supported by the pivot-out side circumferential bridge 14. Therefore, the pad pressing portions 40a and 40b can stably apply a pressing force to the inner pad 3 and the outer pad 4. Specifically, when the inner pad 3 and the outer pad 4 are assembled to the brake caliper 2, the first clamp 41 does not need to elastically deform the portions other than the pad pressing portions 40a and 40b, so that a desired amount of pressing force can be applied to the inner pad 3 and the outer pad 4 by the pad pressing portions 40a and 40b.

[0282] In this example, the radial outer side surface of the base plate portion 45 constituting the main body portion 39 is in surface contact with the pressed surface 32 provided on the rotation-side circumferential bridge 14, thereby strictly limiting the radial position of the main body portion 39 and making the pressing force generated by the pad pressing portions 40a and 40b more stable.

[0283] In this example, the pad pressing portions 40a, 40b have a horizontal U-shape when viewed in the circumferential direction and are arranged on both sides of the main body portion 39 in the axial direction, so that the total length of the pad pressing portions 40a, 40b can be shortened. Therefore, the weight reduction and cost reduction of the rotation-out side pad clamp 5 are achieved.

[0284] In this example, since the turn-out side pad clamp 5 is composed of a first clamp 41 having a main body 39 and a pair of pad pressing portions 40a, 40b and a second clamp 42 assembled to the turn-out side end bridge 11, the first clamp 41 and the second clamp 42 can play their respective functions. Specifically, in this example, the first clamp 41 can play the function of pressing the inner pad 3 and the outer pad 4 toward the radial inside, and the second clamp 42 can play the function of reducing the drag resistance of the inner pad 3 and the outer pad 4.

[0285] In this example, the second clamp 42 has an intervening portion 52, and the intervening portion 52 is arranged between the second fixing portion 47 of the first clamp 41 and the output-side pressed surface 24 of the output-side end bridge 11. If the second fixing portion 47 of the first clamp 41 is to be in direct contact with the output-side pressed surface 24, the output-side pressed surface 24 has a draft angle of the casting, so it is difficult to fix the second fixing portion 47 directly to the output-side pressed surface 24. In this example, since the first clamp 41 and the second clamp 42 are configured separately, the second fixing portion 47 of the first clamp 41 can be reliably engaged with the intervening portion 52 of the second clamp 42.

[0286] The inner clamping portion 54 constituting the second clamp 42 has a circumferential engagement portion 59 that engages with the engagement inclined surface 26 provided on the swing-out side end bridge 11 in the circumferential direction at a portion protruding to the other side in the circumferential direction than the outer clamping portions 53a and 53b, so that the outer clamping portions 53a and 53b can be suppressed from floating from the moment support surface 23. Therefore, the drag resistance of the inner lining block 3 and the outer lining block 4 can be reduced, and the contact between the outer clamping portions 53a and 53b and the moment support surface 23 can be stabilized, thereby suppressing the generation of abnormal noise.

[0287] In this example, the inclination angle of the engagement inclined surface 26 with respect to the moment support surface 23 is limited to 15 degrees or more and 30 degrees or less, so that the outer clamping parts 53 a and 53 b can be effectively suppressed from floating from the moment support surface 23 .

[0288] In this example, the second fixing portion 47 of the first clamp 41 is axially engaged with the axial engagement portion 56 provided in the second clamp 42 , so that the axial position of the second fixing portion 47 can be restricted by the second clamp 42 .

[0289] The first clamp 41 has first axial limiting portions 43a, 43b disposed close to and opposite to the axial sides of the output-side circumferential bridge 14. Therefore, the output-side circumferential bridge 14 can be used to limit the axial position of one circumferential side portion of the first clamp 41 and suppress the tilting of the first clamp 41.

[0290] In this example, the second jig 42 also includes the second axial restricting portions 55 a and 55 b disposed close to and facing both axial side surfaces of the output-side circumferential bridge 14 . Therefore, the axial position of the second jig 42 can be restricted by the output-side circumferential bridge 14 .

[0291] The first clamp 41 has a radial limiting portion 44 that abuts against the radial inner surface of the output-side circumferential bridge 14 when assembled on the brake caliper 2, thereby preventing the first return portions 50a, 50b of the first fixed portions 46a, 46b from being radially outwardly offset from the normal position in contact with the central side pressed surface 27 of the central bridge 12.

[0292] The front half of the pad pressing parts 40a and 40b of the first clamp 41 is inclined radially inward as it moves axially inward in the free state, so that the inner pad 33 can be separated from the rotor 7 during non-braking. Therefore, dragging of the inner pad 3 and the outer pad 4 can be suppressed.

[0293] In this example, the transfer-in side pad clamp 6 has a first transfer-in side axial limiting portion 64a, 64b at the end on the other side in the circumferential direction, and has a second transfer-in side axial limiting portion 74a, 74b at the end on one side in the circumferential direction, so that the axial position of the transfer-in side pad clamp 6 can be limited by using the transfer-in side circumferential bridge 13.

[0294] The entry-side pad clamp 6 has an entry-side first axial limiting portion 64a, 64b, which has a substantially L-shape when viewed axially and is arranged close to and opposite to the axial two side surfaces of the entry-side circumferential bridge 13, thereby being able to suppress the tilting of the entry-side pad clamp 6.

[0295] [Second example]

[0296] use Fig.47 A second example of the embodiment of the present invention will be described.

[0297] The disc brake device 1 a of this example includes a rotation-out side pad clamp 5 a composed of only the first clamp 41 .

[0298] Therefore, the turning-out side pad clamp 5 a of this example has a function of elastically pressing the inner pad 3 and the outer pad 4 toward the radial inner side and pushing them back in the axial direction.

[0299] The structure of the first clamp 41 constituting the roll-out-side pad clamp 5 a is the same as the structure of the first clamp 41 constituting the roll-out-side pad clamp 5 of the first example.

[0300] However, in this example, the second folded portion 51 provided at the terminal end of the second fixing portion 47 constituting the first clamp 41 directly presses the outgoing-side end bridge 11a constituting the brake caliper 2a in the circumferential direction. Specifically, the second folded portion 51 directly presses the outgoing-side pressed surface 24a, which is arranged on the radially inner side of the connecting portion with the outgoing-side circumferential bridge 14 in the side surface on one circumferential side of the outgoing-side end bridge 11a.

[0301] The swing-out-side end bridge 11 a has an engaging recessed portion 75 recessed toward the other side in the circumferential direction at a portion of the swing-out-side pressed surface 24 a that is pressed by the second folded-back portion 51 of the second fixing portion 47 .

[0302] The second folded portion 51 is radially engaged with the engagement recess 75. Therefore, the radial position (contact position) of the second folded portion 51 is prevented from shifting radially inward.

[0303] In the case of the output side pad fixture 5a of the present example as described above, since the main body portion 39 elastically supported between the center bridge 12 and the output side end bridge 11a is also arranged radially inward of the output side circumferential bridge 14, it can be applied to the disc brake device 1a having the output side circumferential bridge 14. In addition, the radially outer side surface of the main body portion 39 is pressed toward the radially inner side surface of the output side circumferential bridge 14 by the elastic force of the pair of pad pressing portions 40a, 40b, so that the pad pressing portions 40a, 40b can stably apply pressing force to the inner pad 3 and the outer pad 4.

[0304] The other structures and effects of the second example are the same as those of the first example.

[0305] As mentioned above, although the embodiment according to one aspect of the present invention has been described, the present invention is not limited thereto, and can be appropriately modified within the scope of the technical concept of the invention.

[0306] The structure of the pad clip of the present invention is not limited to the structure of each example of the embodiment, and can be modified appropriately.

[0307] Description of Reference Numerals

[0308] 1. 1a Disc brake device

[0309] 2. 2a brake caliper

[0310] 3 Lining Block

[0311] 4 Outer lining block

[0312] 5.5a Turn out the side lining block fixture

[0313] 6. Turn the side lining block fixture into place

[0314] 7 Rotor

[0315] 8 inner body

[0316] 9 External body

[0317] 10 Turn into the side bridge

[0318] 11, 11a Turn-out side end bridge

[0319] 12 Center Bridge

[0320] 13 Turn into the side circumferential bridge

[0321] 14 Swing-out side circumferential bridge

[0322] 15 Inner cylinder

[0323] 16 Outer cylinder

[0324] 17 Inner piston

[0325] 18 Outer piston

[0326] 19 Mounting Seat

[0327] 20 Pins

[0328] 21 Torque bearing surface

[0329] 22 Storage recess

[0330] 23 Moment bearing surface

[0331] 24, 24a: pressed surface on the roll-out side

[0332] 25 recess

[0333] 26 Engagement inclined surface

[0334] 27 Center side pressed surface

[0335] 28 First inclined surface

[0336] 29 Second inclined surface

[0337] 32 Pressed surface

[0338] 33 Lining

[0339] 34 Back Panel

[0340] 35 Extension

[0341] 36 Through Holes

[0342] 37 Torque transmission surface

[0343] 38 Ear

[0344] 39 Main body

[0345] 40a, 40b Pad pressing portion

[0346] 40a1, 40b1 radial outer portion

[0347] 40a2, 40b2 radial inner portion

[0348] 40a3, 40b3 flexure

[0349] 41 First fixture

[0350] 42 Second clamp

[0351] 43a, 43b first axial limiting portion

[0352] 44 Radial restriction

[0353] 45 Substrate Department

[0354] 46, 46b first fixing portion

[0355] 47 second fixing part

[0356] 48a, 48b axial plate portion

[0357] 49a, 49b Circumferential plate portion

[0358] 50a, 50b first folding portion

[0359] 51 Second Turnaround

[0360] 52 Intermediary

[0361] 53a, 53b outer clamping part

[0362] 54 inner clamping part

[0363] 55a, 55b second axial limiting portion

[0364] 56 axial engagement portion

[0365] 57a, 57b connecting plate portion

[0366] 58 radial engagement portion

[0367] 59 Circumferential engagement portion

[0368] 60a, 60b vertical plate portion

[0369] 61 Turn to the side main body

[0370] 62a, 62b are transferred to the side pad pressing part

[0371] 63a, 63b Circumferential pressing portion

[0372] 64a, 64b: first axial limiting portion on the transfer side

[0373] 65 Radial restriction section on the transfer side

[0374] 66 Transfer to the side base plate

[0375] 67a, 67b first fixing portion on the transfer side

[0376] 68 The second fixing part on the transfer side

[0377] 69a, 69b: First return portion at the turning side

[0378] 70 Circumferential connecting plate

[0379] 71 Axial extension

[0380] 72a, 72b clamped plate portion

[0381] 73 radial engagement portion on the transfer side

[0382] 74a, 74b: second axial limiting portion on the transfer side

[0383] 75 engagement recess

[0384] 76a, 76b horizontal plate portion

Claims

1. A pad clamp for a disc brake device, characterized in that: The pad clamp for the disc brake device is made of a metal plate, mounted on a brake caliper, and elastically presses a pair of pads, the brake caliper having: an inner body and an outer body; a center bridge and an end bridge, the center bridge and the end bridge are separately arranged in the circumferential direction and connect the inner body and the outer body in the axial direction respectively; and a circumferential bridge, the circumferential bridge is circumferentially bridged between the center bridge and the end bridge, The pad clamp for a disc brake device comprises: a main body portion, the main body portion being elastically supported between the center bridge and the end bridges; and a pair of pad pressing parts, the pair of pad pressing parts pressing the outer peripheral edge parts of the pair of pads toward the radial inside, The radially outer side surface of the main body portion is pressed toward the radially inner side surface of the circumferential bridge by the elastic force of the pair of pad pressing portions.

2. The pad clamp for a disc brake device according to claim 1, characterized in that: The main body portion has two first fixing portions at the end portion on one circumferential side, and the two first fixing portions circumferentially press the side portions of the other circumferential side of the center bridge, which are located on both sides of the connection portion connected to the circumferential bridge in the axial direction, and the main body portion has a second fixing portion at the end portion on the other circumferential side, and the second fixing portion circumferentially directly or indirectly presses the side portions of the one circumferential side of the end bridge, which are located radially inside the connection portion connected to the circumferential bridge.

3. The pad clamp for a disc brake device according to claim 1, characterized in that: The pair of pad pressing portions are arranged on both sides of the main body portion in the axial direction and have a horizontal U-shape when viewed in the circumferential direction.

4. The pad clamp for a disc brake device according to claim 2, characterized in that: The pad clamp for a disc brake device comprises: A first clamp having the main body and a pair of pad pressing portions; and a second fixture, the second fixture being assembled to the end bridge, The second clamp has an intervening portion disposed between the second fixing portion and a side surface of one circumferential side of the end bridge. The intervening portion includes a radial engagement portion that engages with the second fixing portion in a radial direction.

5. The pad clamp for a disc brake device according to claim 4, characterized in that: The second fixing portion has a shape bent in a convex shape on the other side of the circumference. The radial engaging portion has a shape that is bent in a convex manner on one side in the circumferential direction. The second fixing portion is arranged radially outside the radial engaging portion.

6. The pad clamp for a disc brake device according to claim 5, characterized in that: The second clamp is assembled to the end bridge at the rotating side and has two outer clamping parts and one inner clamping part for elastically clamping the end bridge from both sides in radial direction. The outer clamping portion has a flat plate shape, is disposed on both sides of the circumferential bridge in the axial direction, and is clamped between the radial outer side surface of the end bridge and the pad.

7. The pad clamp for a disc brake device according to claim 6, characterized in that: The inner clamping portion has a circumferential engagement portion at a portion protruding further toward the other circumferential side than the outer clamping portion. The circumferential engagement portion is bent in a convex shape radially outward and engages with the radial inner side surface of the end bridge in the circumferential direction.

8. The pad clamp for a disc brake device according to claim 4, characterized in that: The second clamp has a pair of second axial restriction portions, and the pair of second axial restriction portions are arranged close to and opposite to both axial side surfaces of the circumferential bridge.

9. The pad clamp for a disc brake device according to claim 4, characterized in that: The second clamp has an axial clamping portion, the axial width of the axial clamping portion is slightly larger than the axial width of the second fixing portion, and the axial clamping portion is axially clamped with the second fixing portion.

10. The pad clamp for a disc brake device according to claim 4, characterized in that: The first clamp has a pair of first axial restriction portions, and the pair of first axial restriction portions are arranged close to and opposite to both axial side surfaces of the circumferential bridge.

11. The pad clamp for a disc brake device according to claim 4, characterized in that: The first clamp has a radial limiting portion, which abuts against the radial inner side surface of the circumferential bridge when the first clamp is assembled relative to the brake caliper, preventing the abutment position of the first fixing portion relative to the side surface on the other circumferential side of the center bridge from being radially offset from the regular position.

12. The pad clamp for a disc brake device according to claim 1, wherein: The pair of pad pressing portions press the pad in a direction away from the rotor in the axial direction.

13. A disc brake device, characterized in that: have: A brake caliper, the brake caliper comprising: an inner body and an outer body, the inner body and the outer body being arranged on both sides of the axial direction with a rotor sandwiched therebetween; a center bridge and an end bridge, the center bridge and the end bridge being arranged separately in the circumferential direction and respectively connecting the inner body and the outer body in the axial direction; and a circumferential bridge, the circumferential bridge being circumferentially spanned between the central bridge and the end bridges; a pair of pads, the pair of pads being supported to be movable in the axial direction relative to the brake caliper; as well as a pad clamp made of a metal plate, the pad clamp being mounted on the brake caliper and elastically pressing a pair of the pads, The pad clamp is the pad clamp for a disc brake device according to any one of claims 1 to 12.

14. The disc brake device according to claim 13, characterized in that The end bridge has an engaging inclined surface on the radial inner side, the engaging inclined surface is inclined in a direction that is radially inward as it moves toward one side in the circumferential direction, and is engaged with the circumferential engaging portion in the circumferential direction. The pad clamp is the pad clamp for a disc brake device according to claim 7 .

15. The disc brake device according to claim 14, characterized in that The end bridge has a planar moment bearing surface on the radially outer side surface that is in surface contact with the outer clamping portion. An inclination angle of the engagement inclined surface with respect to the moment support surface is greater than or equal to 15 degrees and less than or equal to 30 degrees.

16. The disc brake device according to claim 13, characterized in that The second fixing portion directly presses a portion of the side surface of the end bridge on one circumferential side in the circumferential direction, which portion is located radially inside the connection portion connected to the circumferential bridge. The end bridge has a portion of the side surface on one circumferential side that is pressed by the second fixing portion and has a locking recessed portion that is recessed toward the other circumferential side. The pad clamp is the pad clamp for a disc brake device according to claim 2.

17. The disc brake device according to claim 13, characterized in that The side surface of the other circumferential side of the center bridge has a first inclined surface on the radial inner side that is inclined toward the other circumferential side as it moves radially outward, and has a second inclined surface on the radial outer side of the portion adjacent to the first inclined surface that is inclined toward one circumferential side as it moves radially outward.

Images