Pad clips and disc brake devices for disc brake systems

Abstract

The present invention provides a pad clip that can stably apply a pressing force to the pad in a direction that separates it from the rotor, even when the pad is significantly worn. [Solution] The pad pressing portions 34a and 34b constituting the dispensing pad clip 5 have a rising portion 42, an outer plate portion 43, an inner plate portion 44, a first bent portion 45, a second bent portion 46, and a third bent portion 47. Of these, the third bent portion 47 has a wide portion 50 which is wider than the first bent portion 45 and the second bent portion 46, and has a larger radius of curvature R3 than the first bent portion 45 and the second bent portion 46.

Description

[Technical Field]

[0001] This disclosure relates to a pad clip for a disc brake system and a disc brake system. [Background technology]

[0002] Disc brakes are widely used to brake automobiles and motorcycles. When braking with a disc brake, a pair of pads, located on either side of a rotor that rotates with the wheel, are pressed against the rotor by a piston.

[0003] In disc brake systems, to prevent the rotor and pads from rubbing against each other when the braking force is released, a pad clip is used to press the pads against the rotor, separating them from the rotor.

[0004] Japanese Patent Publication No. 2020-51437 describes a disc brake device equipped with a pad clip. The conventional pad clip described in Japanese Patent Publication No. 2020-51437 has a pad pressing portion for pressing the outer peripheral edge of the pad that faces radially outward. The conventional pad clip applies a pressing force to the pad in a direction away from the rotor by inclining the tip of the pad pressing portion radially inward as it approaches the rotor with respect to the outer peripheral edge of the pad. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2020-51437 [Overview of the project] [Problems that the invention aims to solve]

[0006] The pad clip with the conventional structure described in Japanese Patent Application Laid-Open No. 2020-51437 can apply a pressing force in a direction separating the pad from the rotor until the pad wears from a new state to a certain extent. However, in a state where the wear of the pad progresses until the remaining amount of the pad becomes sufficiently small, the contact position of the outer peripheral edge portion of the pad with respect to the tip portion of the pad pressing portion moves toward the rotor side, so that the inclination angle of the tip portion of the pad pressing portion with respect to the outer peripheral edge portion of the pad becomes small. Specifically, the pad pressing portion elastically deform, and the tip portion of the pad pressing portion becomes substantially parallel to the outer peripheral edge portion of the pad. Therefore, it becomes difficult to sufficiently apply a pressing force in a direction separating the pad from the rotor.

[0007] An object of the present disclosure is to provide a pad clip for a disc brake device that can stably apply a pressing force in a direction separating the pad from the rotor even in a state where the wear of the pad has progressed.

Means for Solving the Problems

[0008] The pad clips for a disc brake device according to the first aspect and the second aspect of the present disclosure are made of a metal plate, and include an inner body and an outer body arranged on both axial sides with the rotor interposed therebetween, and a center bridge and an end bridge that are arranged at intervals in the circumferential direction and connect the inner body and the outer body in the axial direction, respectively, and are attached to a caliper to elastically press a pair of pads.

[0009] The pad clips for a disc brake device according to the first aspect and the second aspect of the present disclosure include a main body portion elastically supported between the center bridge and the end bridge, and a pair of pad pressing portions arranged on both sides of the main body portion in the axial direction and pressing the pair of pads radially inward.

[0010] The pair of pad pressing portions each have a rising portion, an outer plate portion, an inner plate portion, a first bent portion, a second bent portion, and a third bent portion.

[0011] The rising portion extends radially outward from a portion of the main body portion to which the pad pressing portion is connected.

[0012] The outer plate portion has a substantially flat plate shape and is arranged substantially parallel to a portion of the main body portion to which the pad pressing portion is connected in a free state and extends in the axial direction.

[0013] The inner plate portion has a substantially flat plate shape, is arranged radially inside the outer plate portion, and is inclined in a direction radially inward as it goes axially inward, and presses the outer peripheral edge portion of the pad with its radially inner surface.

[0014] The first bent portion connects the main body portion and the radially inner end portion of the rising portion.

[0015] [[ID=十六]]The second bent portion connects the radially outer end portion of the rising portion and the axially inner end portion of the outer plate portion.

[0016] The third bent portion connects the axially outer end portion of the outer plate portion and the axially outer end portion of the inner plate portion.

[0017] In the pad clip for a disc brake device according to the first aspect of the present disclosure, the third bent portion has a wide portion with a wider plate width than the first bent portion and the second bent portion, and has a larger curvature radius than the first bent portion and the second bent portion.

[0018] In the pad clip for a disc brake device according to the second aspect of the present disclosure, the third bent portion has a larger curvature radius than at least the first bent portion, and a through hole is provided in a range including the second bent portion extending from the rising portion to the outer plate portion.

[0019] The pad clip for a disc brake device according to the first aspect of the present disclosure and the pad clip for a disc brake device according to the second aspect of the present disclosure can be implemented independently or simultaneously.

[0020] In a pad clip for a disc brake device according to one aspect of the present disclosure, the third bent portion may have a plate width expanding portion on its radially outer side, wherein the plate width gradually increases as it moves away from the outer plate portion.

[0021] In a pad clip for a disc brake device according to one aspect of the present disclosure, the third bent portion may have a plate width reduction portion on its radially inner side, wherein the plate width gradually decreases as it approaches the inner plate portion.

[0022] In a pad clip for a disc brake device according to one aspect of the present disclosure, the inner plate portion may have a plate width reduction portion in which the plate width gradually decreases as it moves away from the third bent portion.

[0023] In a pad clip for a disc brake device according to one aspect of the present disclosure, the outer plate portion may have a plate width expansion portion in which the plate width gradually increases as it approaches the third bent portion.

[0024] In a pad clip for a disc brake device according to one aspect of the present disclosure, the third bent portion may be composed of an outer bent portion provided on the radially outer side of the third bent portion and an inner bent portion provided on the radially inner side of the third bent portion. The outer bent portion may have a larger radius of curvature than the first and second bent portions, and the inner bent portion may have a larger radius of curvature than the first and second bent portions and a different radius of curvature than the outer bent portion.

[0025] When the third bent portion is composed of the outer bent portion and the inner bent portion, the outer bent portion may have the wide portion along its entire length, and the inner bent portion may have the wide portion in at least a part thereof.

[0026] If the third bent portion is composed of the outer bent portion and the inner bent portion, the outer bent portion may have a larger radius of curvature than the inner bent portion.

[0027] A disc brake device according to one aspect of the present disclosure comprises a caliper, a pair of pads, and a pad clip made of a metal plate.

[0028] The caliper comprises an inner body and an outer body arranged on both axial sides of the rotor, and a center bridge and an end bridge arranged circumferentially and spaced apart, respectively, and connecting the inner body and the outer body in the axial direction.

[0029] The pair of pads are supported so as to be axially movable relative to the caliper.

[0030] The pad clip is attached to the caliper and elastically presses the pair of pads, and is a pad clip for a disc brake device according to one aspect of the present disclosure.

[0031] In a disc brake device according to one aspect of the present disclosure, the caliper may further have a circumferential bridge that spans the center bridge and the end bridge in the circumferential direction.

[0032] If the caliper includes the circumferential bridge, the radial outer surface of the main body can be pressed against the radial inner surface of the circumferential bridge by the elasticity (reaction force) of the pair of pad pressing portions. [Effects of the Invention]

[0033] According to a pad clip for a disc brake device according to one aspect of this disclosure, even when the pad is worn, a stable pressing force can be applied to the pad in a direction that separates it from the rotor. [Brief explanation of the drawing]

[0034] [Figure 1] Figure 1 is a front view showing a disc brake device of a first example of an embodiment of the present disclosure. [Figure 2] Figure 2 is a view of Figure 1 from above. [Figure 3] Figure 3 is a view of Figure 1 from below. [Figure 4] Figure 4 is a perspective view of a disc brake device of a first example embodiment of the present disclosure, viewed from the radially outward and circumferentially on the other side. [Figure 5] Figure 5 is a perspective view of a disc brake device of a first example embodiment of the present disclosure, viewed from the radially outward direction and one side in the circumferential direction. [Figure 6] Figure 6 is a cross-sectional view taken along the line A-A in Figure 2. [Figure 7] Figure 7 is an enlarged view of the other side in the circumferential direction of Figure 1. [Figure 8] Figure 8 is an enlarged view of one side of Figure 1 in the circumferential direction. [Figure 9] Figure 9 is an enlarged view of the other circumferential side portion of Figure 2. [Figure 10] Figure 10 is an enlarged view of one side of Figure 2 in the circumferential direction. [Figure 11] Figure 11 is a version of Figure 6 with the pads omitted. [Figure 12] Figure 12 is an enlarged view of the other side in the circumferential direction of Figure 11. [Figure 13] Figure 13 is an enlarged view of one side of Figure 11 in the circumferential direction. [Figure 14] Figure 14 is a front view showing a discharge-side pad clip of a first example of an embodiment of the present disclosure. [Figure 15] Figure 15 shows the discharge-side pad clip of the first example, viewed from above as shown in Figure 14. [Figure 16] Figure 16 shows the discharge-side pad clip of the first example, viewed from below in Figure 14. [Figure 17] Figure 17 shows the discharge-side pad clip of the first example, viewed from the right side of Figure 14. [Figure 18] Figure 18 shows the discharge-side pad clip of the first example, viewed from the left side of Figure 14. [Figure 19] Figure 19 is a perspective view of the first example of the discharge-side pad clip, seen from the radially outer (upper) side. [Figure 20]Figure 20 is a perspective view of the first example of the discharge-side pad clip, seen from the radially inward (lower) side. [Figure 21] Figure 21 is a front view showing the first discharge-side clip, which constitutes the discharge-side pad clip in a first example of an embodiment of the present disclosure. [Figure 22] Figure 22 is a view of the first discharge-side clip, which constitutes the discharge-side pad clip of the first example, as seen from above in Figure 21. [Figure 23] Figure 23 is a view of the first discharge-side clip, which constitutes the discharge-side pad clip of the first example, as seen from below Figure 21. [Figure 24] Figure 24 shows the first discharge clip, which constitutes the discharge pad clip of the first example, as viewed from the right side of Figure 21. [Figure 25] Figure 25 shows the first discharge clip, which constitutes the discharge pad clip of the first example, as viewed from the left side of Figure 21. [Figure 26] Figure 26 is a perspective view of the first discharge-side clip, which constitutes the discharge-side pad clip of the first example, viewed from the radially outer (upper) side. [Figure 27] Figure 27 is a perspective view of the first discharge-side clip, which constitutes the discharge-side pad clip of the first example, viewed from the radially inward (lower) side. [Figure 28] Figure 28 is a magnified view of a portion of Figure 25. [Figure 29] Figure 29 is an exploded view of the first discharge clip, which constitutes the discharge pad clip of the first example. [Figure 30] Figure 30 is a magnified view of a portion of Figure 29. [Figure 31] Figure 31 shows the elastic deformation state of the pad pressing portion of the first discharge-side clip that constitutes the discharge-side pad clip of the first example. Figure 31(A) shows the pad in a new state, and Figure 31(B) shows the pad in a worn state. [Figure 32] Figure 32 is a front view showing a reverse-side pad clip of a first example of an embodiment of the present disclosure. [Figure 33]Figure 33 shows the entry-side pad clip of the first example, viewed from above as shown in Figure 32. [Figure 34] Figure 34 shows the entry-side pad clip of the first example, viewed from below as shown in Figure 32. [Figure 35] Figure 35 shows the entry-side pad clip of the first example, viewed from the left side of Figure 32. [Figure 36] Figure 36 shows the entry-side pad clip of the first example, viewed from the right side of Figure 32. [Figure 37] Figure 37 is a perspective view of the first example of the entry-side pad clip, seen from the radially outer (upper) side. [Figure 38] Figure 38 is a perspective view of the first example of the entry-side pad clip, seen from the radially inward (lower) side. [Figure 39] Figure 39 is a diagram corresponding to Figure 22, showing a first discharge pad clip that constitutes a discharge pad clip in a second example of an embodiment of the present disclosure. [Figure 40] Figure 40 is a diagram corresponding to Figure 11, showing a third example of an embodiment of the present disclosure. [Figure 41] Figure 41 is a diagram corresponding to Figure 32, showing an entry-side pad clip of a third embodiment of the present disclosure. [Figure 42] Figure 42 is a diagram corresponding to Figure 35, showing an entry-side pad clip of a third embodiment of the present disclosure. [Modes for carrying out the invention]

[0035] [Example 1] A first example of an embodiment of this disclosure will be described with reference to Figures 1 to 38.

[0036] This example shows an application of a pad clip for a disc brake system according to one aspect of the present disclosure to an opposed-piston type disc brake system used for braking automobiles.

[0037] The disc brake device 1 in this example includes two pad clips 5 and 6. Specifically, the disc brake device 1 includes an exit-side pad clip 5 located on the exit side and an entry-side pad clip 6 located on the entry side. In this example, each of the exit-side pad clip 5 and the entry-side pad clip 6 corresponds to a pad clip for a disc brake device according to one embodiment of the present disclosure.

[0038] However, when implementing a disc brake device according to one aspect of this disclosure, only one pad clip may be provided. If two pad clips are provided, only one of the pad clips, either the exit pad clip or the entry pad clip, may be a pad clip for a disc brake device according to one aspect of this disclosure.

[0039] [Explanation of the structure of the disc brake system] The disc brake device 1 in this example comprises a caliper 2, a pair of pads 3 and 4, a pad clip 5 on the exit side, and a pad clip 6 on the entry side.

[0040] The disc brake device 1 generates braking force by pressing a pair of pads 3 and 4 against a circular plate-shaped rotor 7 (see Figure 2) that rotates with the wheel.

[0041] In the following explanation, unless otherwise specified, axial, circumferential, and radial directions refer to the axial, circumferential, and radial directions of the rotor 7. The front-back direction in Figures 1, 6-8, and 11-13, and the up-down direction in Figures 2, 3, 9, and 10 correspond to the axial direction, with the side closer to the rotor 7 being called the axial inner side and the side further away from the rotor 7 being called the axial outer side. The left-right direction in Figures 1-3 and 6-13 corresponds to the circumferential direction, with the right side in Figures 1-3 and 6-13 being called one circumferential side and the left side in Figures 1-3 and 6-13 being called the other circumferential side. In this example, one circumferential side becomes the entry side when the vehicle moves forward, and the other circumferential side becomes the exit side when the vehicle moves forward. Furthermore, the vertical direction in Figures 1, 6-8, and 11-13, and the front-to-back direction in Figures 2, 3, 9, and 10 correspond to the radial direction, the upper side of Figures 1, 6-8, and 11-13, the front side of Figures 2, 9, and 10, and the back side of Figure 3 are radially outward, and the lower side of Figures 1, 6-8, and 11-13, the back side of Figures 2, 9, and 10, and the front side of Figure 3 are radially inward. Note that the entry side refers to the side in which the rotor 7 enters the caliper 2, and the exit side refers to the side in which the rotor 7 exits the caliper 2. The axial view refers to the view of the rotor 7 from the axial direction, the radial view refers to the view of the rotor 7 from the radial direction, and the circumferential view refers to the view of the rotor 7 from the circumferential direction.

[0042] <Overall structure of the caliper> Caliper 2 supports a pair of pads 3 and 4 so as to be movable in the axial direction. In this example, caliper 2 is integrally formed from a light alloy such as aluminum alloy or an iron-based alloy by casting or other processes. Caliper 2 is supported and fixed to the knuckle of the suspension system so as to cover the rotor 7 from the radially outer side.

[0043] The caliper 2 has an inner body 8 and an outer body 9 arranged on both axial sides of the rotor 7, and end bridges 10, 11 and center bridges 12, 13 arranged circumferentially spaced apart and connecting the inner body 8 and the outer body 9 in the axial direction, respectively.

[0044] Caliper 2 includes two end bridges 10 and 11 that axially connect the circumferential ends of the inner body 8 and outer body 9, respectively. Specifically, caliper 2 includes an entry-side end bridge 10 that connects one circumferential end of the inner body 8 and outer body 9, and an exit-side end bridge 11 that connects the other circumferential end of the inner body 8 and outer body 9.

[0045] In this example, the caliper 2 is equipped with two center bridges 12 and 13 that axially connect the circumferential intermediate portions of the inner body 8 and the outer body 9. Specifically, the caliper 2 has an entry-side center bridge 12 located on one side of the circumferential center portion and an exit-side center bridge 13 located on the other side of the circumferential center portion. The entry-side center bridge 12 and the exit-side center bridge 13 are spaced apart in the circumferential direction.

[0046] When implementing a disc brake system according to one aspect of this disclosure, the caliper may have only one center bridge or may have three or more center bridges.

[0047] The caliper 2 in this example further comprises circumferential bridges 14 and 15. Specifically, the caliper 2 has an entry-side circumferential bridge 14 that spans the entry-side center bridge 12 and the entry-side end bridge 10 in the circumferential direction, and an exit-side circumferential bridge 15 that spans the exit-side center bridge 13 and the exit-side end bridge 11 in the circumferential direction. However, when implementing a disc brake device according to one aspect of this disclosure, it is optional for the caliper to include circumferential bridges.

[0048] Inner body and outer body The inner body 8 is positioned axially closer to the center of the vehicle than the rotor 7. The inner body 8 supports the inner pad 3 of the pair of pads 3 and 4, which is positioned axially closer to the center of the vehicle than the rotor 7, so that it can move in the axial direction.

[0049] The inner body 8 has cylinders 16. In the illustrated example, the inner body 8 has three cylinders 16. Inner pistons 17 are fitted into the cylinders 16 of the inner body 8 so as to be able to move in the axial direction.

[0050] The inner body 8 has a mounting seat 19 on its radially inner surface for supporting and fixing to the knuckle.

[0051] The outer body 9 is positioned outside the vehicle body in the axial direction compared to the rotor 7. The outer body 9 supports the outer pad 4 of the pair of pads 3, 4, which is positioned outside the vehicle body in the axial direction compared to the rotor 7, so that it can move in the axial direction.

[0052] The outer body 9 has the same number of cylinders as the inner body 8. Outer pistons 18 are fitted into the cylinders of the outer body 9 so as to be able to move in the axial direction. The inner piston 17 and the outer piston 18 are positioned opposite each other in the axial direction.

[0053] Each of the inner body 8 and the outer body 9 is provided with a pin 20 on the radially inner side of one circumferential side. The pin 20 is positioned substantially parallel to the central axis of the rotor 7. A pair of pins 20 are positioned coaxially with each other.

[0054] The pins 20 protrude axially from the inner body 8 and outer body 9, respectively, so as to approach the rotor 7. During forward braking, the pins 20 engage with the through holes 30 provided in the inner pad 3 and outer pad 4 (described later) to support the brake tangential force F1 (see Figure 6) acting on the inner pad 3 and outer pad 4.

[0055] End Bridge The entry-side end bridge 10 and the exit-side end bridge 11 have a partially cylindrical shape that is curved in an arc, and cover the rotor 7 from the radially outward direction.

[0056] The entry-side end bridge 10 has a pair of torque receiving surfaces 21 (see Figures 8 and 10). The pair of torque receiving surfaces 21 are provided on both axial sides of the other circumferential side of the entry-side end bridge 10, with the connection portion with the entry-side circumferential bridge 14 in between. The torque receiving surfaces 21 are composed of flat surfaces perpendicular to the lines of action of the brake tangential forces F1 and F2 (see Figure 6). During reverse braking, the torque receiving surfaces 21 come into contact with the torque transmission surfaces 31, which will be described later, provided on the inner pad 3 and outer pad 4, and support the brake tangential force F2 acting on the inner pad 3 and outer pad 4.

[0057] The exit-side end bridge 11 has a pair of receiving recesses 22 (see Figures 7 and 9) on the radially outer portion of one end in the circumferential direction. The pair of receiving recesses 22 are located on both axial sides of the other end in the circumferential direction of the exit-side circumferential bridge 15. The receiving recesses 22 accommodate the ear portions 32, which will be described later, provided on the inner pad 3 and the outer pad 4, respectively.

[0058] The exit-side end bridge 11 has a pair of moment bearing surfaces 23. The moment bearing surfaces 23 are composed of flat surfaces substantially perpendicular to the torque receiving surface 21 provided on the entry-side end bridge 10. The moment bearing surfaces 23 are composed of the bottom surface of the housing recess 22 that faces radially outward. During forward braking and reverse braking, the ear portions 32 provided on the inner pad 3 and outer pad 4, which will be described later, are pressed against the moment bearing surfaces 23. The moment bearing surfaces 23 bear the moment force acting on the inner pad 3 and outer pad 4.

[0059] The return-side end bridge 11 has a recess 24 (see Figure 12) on the radially inward side of one end in the circumferential direction. The inner clamping portion 57, which constitutes the return-side pad clip 5 and will be described later, is positioned in the recess 24. The bottom surface of the recess 24, which faces radially inward, is inclined radially inward as it approaches one side in the circumferential direction, and engages with the inner clamping portion 57 of the return-side pad clip 5 in the circumferential direction.

[0060] The entry-side end bridge 10 has a recess 24a (see Figure 13) on the radially inner side of the other end in the circumferential direction. The tip of the second fixing part 41a, which will be described later and constitutes the entry-side pad clip 6, is positioned in the recess 24a.

[0061] Center Bridge The entry-side center bridge 12 and the exit-side center bridge 13 cover the rotor 7 from the radially outward direction.

[0062] In this example, the entry-side center bridge 12 and the exit-side center bridge 13 each consist of two columnar sections that extend substantially linearly in the axial direction and are spaced apart in the circumferential direction, and a connecting section that is positioned between the two columnar sections and connects them in the circumferential direction. The connecting section is recessed radially inward from the columnar sections. The connecting section is provided with a plurality of ribs (three in the illustrated example) that extend in the circumferential direction and span across the two columnar sections.

[0063] In this example, the caliper 2 has a bridge connecting portion 25 that connects the entry-side center bridge 12 and the exit-side center bridge 13. The bridge connecting portion 25 connects the axial intermediate portions of the entry-side center bridge 12 and the exit-side center bridge 13 in the circumferential direction. However, the bridge connecting portion can be omitted, and the entry-side center bridge and the exit-side center bridge can be completely separated.

[0064] In this example, the caliper 2 is provided with a window portion 26 in the portion enclosed on all four sides by the entry-side center bridge 12, the exit-side center bridge 13, the bridge connecting portion 25, and the inner body 8, and in the portion enclosed on all four sides by the entry-side center bridge 12, the exit-side center bridge 13, the bridge connecting portion 25, and the outer body 9.

[0065] Circumferential bridge The entry-side circumferential bridge 14 and the exit-side circumferential bridge 15 are each positioned radially outward from the rotor 7.

[0066] The entry-side circumferential bridge 14 spans the entry-side end bridge 10 and the entry-side center bridge 12 in the circumferential direction, connecting the entry-side end bridge 10 and the entry-side center bridge 12 in the circumferential direction.

[0067] One end of the entry-side circumferential bridge 14 is connected to the axial middle portion of the other circumferential side surface of the entry-side end bridge 10, and the other end of the entry-side circumferential bridge 14 is connected to the axial middle portion of the one circumferential side surface of the entry-side center bridge 12. The entry-side circumferential bridge 14 extends in a direction perpendicular to the entry-side center bridge 12.

[0068] The return-side circumferential bridge 15 spans the return-side end bridge 11 and the return-side center bridge 13 in the circumferential direction, connecting the return-side end bridge 11 and the return-side center bridge 13 in the circumferential direction.

[0069] The other circumferential end of the output-side circumferential bridge 15 is connected to the axial middle portion of one circumferential side surface of the output-side end bridge 11, and the other circumferential end of the output-side circumferential bridge 15 is connected to the axial middle portion of the other circumferential side surface of the output-side center bridge 13. The output-side circumferential bridge 15 extends in a direction perpendicular to the output-side center bridge 13.

[0070] The axial positions of the entry-side circumferential bridge 14 and the exit-side circumferential bridge 15 are the same.

[0071] <Inner pads and outer pads> Each of the inner pad 3 and outer pad 4 is constructed in a roughly rectangular plate shape and comprises a friction material lining 27 and a metal backing plate 28. The lining 27 is positioned axially opposite to the rotor 7. The backing plate 28 supports the surface of the lining 27 that faces away from the rotor 7. The backing plate 28 comprises an outer peripheral edge portion 28a facing radially outward, an entry-side edge portion 28b facing one side in the circumferential direction, and an exit-side edge portion 28c facing the other side in the circumferential direction.

[0072] The backing plate 28 has a protruding portion 29 (see Figure 6) that extends circumferentially from the lining 27 on the radially inward side of one end in the circumferential direction. The protruding portion 29 has a substantially rectangular through hole 30 that penetrates axially in the portion located radially inward from the line of action of the brake tangential force acting during braking (point A, the center of the friction surface).

[0073] The backing plate 28 has a torque transmission surface 31 (see Figures 8 and 10) on its entry-side edge 28b. The torque transmission surface 31 is configured as a flat surface. The torque transmission surface 31 is located radially outward from the lines of action of the brake tangential forces F1 and F2 that act during braking, and faces the torque receiving surface 21 in the circumferential direction.

[0074] The backing plate 28 has ear portions 32 (see Figures 7 and 9) at the radially outer end of the other end in the circumferential direction. The ear portions 32 have a convex shape that protrudes to the other side in the circumferential direction compared to the radially intermediate part of the rotating side edge portion 28c. The ear portions 32 are pressed against the moment bearing surface 23 during forward braking and reverse braking, thereby bearing the moment (rotational force) acting on the inner pad 3 and the outer pad 4, respectively.

[0075] To support the inner pad 3 and outer pad 4 so as to be axially movable relative to the caliper 2, pins 20 supported by the inner body 8 and outer body 9 are loosely inserted through holes 30 provided in the backing plate 28. The lugs 32 are housed in a receiving recess 22 provided in the exit-side end bridge 11 and are engaged with the receiving recess 22 so as to be axially movable. In this state, the torque transmission surface 31 faces the torque receiving surface 21 provided in the entry-side end bridge 10 in the circumferential direction.

[0076] <Pad Clip> The disc brake device 1 in this example includes a rotation-side pad clip 5 and a rotation-side pad clip 6. The rotation-side pad clip 5 and the rotation-side pad clip 6 are attached to the caliper 2.

[0077] The dispensing pad clip 5, with its pair of pad pressing portions 34a and 34b, presses the other circumferential portion of the outer peripheral edge 28a of the inner pad 3 and the outer pad 4 toward the radially inward direction.

[0078] The re-entry pad clip 6, with its pair of pad pressing portions 34c and 34d, presses one circumferential portion of the outer peripheral edge 28a of the inner pad 3 and outer pad 4 toward the radially inward direction.

[0079] <Regarding the moment acting during braking> In this example, the disc brake device 1 generates moments in the same direction on both the inner pad 3 and the outer pad 4 during braking.

[0080] During forward braking, as shown in Figure 6, a brake tangential force F1 acts on point A, the center of the friction surface of the lining 27, directed toward the other side in the circumferential direction (left side in Figure 6, the rotation side). The brake tangential force F1 is supported by the engagement of the through hole 30 and the pin 20. Therefore, the disc brake device 1 in this example has a so-called pull-anchor structure during forward braking. During forward braking, a moment M1 acts on the inner pad 3 and outer pad 4 in a direction that pushes the other side in the circumferential direction radially inward. Point A, the center of the friction surface, is the centroid of the friction surface and is determined by the diameter and arrangement of the pistons, etc.

[0081] In contrast, during reverse braking, a brake tangential force F2 acts on point A, the center of the friction surface of the lining 27, directed towards one side in the circumferential direction (the right side in Figure 6, the entry side). The brake tangential force F2 is supported by the torque transmission surface 31 contacting the torque receiving surface 21 via the clamped plate portions 60a and 60b, which constitute the entry-side pad clip 6, as described later. For this reason, the disc brake device 1 in this example has a so-called push-anchor structure during reverse braking. During reverse braking, a moment M2 acts on the inner pad 3 and the outer pad 4 in a direction that pushes the other circumferential side portion radially inward (in the same direction as moment M1).

[0082] In this example, the disc brake system 1 has the same direction for the moments M1 and M2 acting on the inner pad 3 and outer pad 4, respectively, during forward braking and reverse braking. Therefore, even when repeatedly braking forward and reverse, such as when parking, the positions of the inner pad 3 and outer pad 4 can be maintained in a counterclockwise rotational state. Consequently, since the positions of the inner pad 3 and outer pad 4 do not need to be changed, the generation of cronk noise can be suppressed.

[0083] [Detailed structure of the dispensing pad clip] Refer to Figures 14 to 20 to explain the structure of the discharge-side pad clip 5.

[0084] The ejection-side pad clip 5 has the function of elastically pressing the inner pad 3 and outer pad 4 radially inward. The ejection-side pad clip 5 covers the moment bearing surface 23, suppressing damage between the inner pad 3 and outer pad 4 and the caliper 2, and ensuring the sliding properties of the inner pad 3 and outer pad 4.

[0085] The re-entry pad clip 5 is mounted between the re-entry end bridge 11 and the re-entry center bridge 13.

[0086] The discharge-side pad clip 5 comprises a main body portion 33 elastically supported between the discharge-side end bridge 11 and the discharge-side center bridge 13, and a pair of pad pressing portions 34a and 34b that press the outer peripheral edge portions 28a of the inner pad 3 and outer pad 4 radially inward.

[0087] The discharge-side pad clip 5 in this example consists of a first discharge-side clip 35 made of metal plate, which has a main body 33 and a pair of pad pressing portions 34a and 34b, and a second discharge-side clip 36 made of metal plate, which is assembled to the discharge-side end bridge 11. In other words, the discharge-side pad clip 5 is made by combining two clips, the first discharge-side clip 35 and the second discharge-side clip 36.

[0088] The first ejection clip 35 and the second ejection clip 36 are engaged in the axial and radial directions and are in contact in the circumferential direction.

[0089] In this example, the first ejection clip 35 elastically presses the outer peripheral edges 28a of the inner pad 3 and outer pad 4 radially inward, thereby pushing the inner pad 3 and outer pad 4 back in the axial direction. The second ejection clip 36 minimizes damage between the inner pad 3 and outer pad 4 and the caliper 2, ensuring the sliding properties of the inner pad 3 and outer pad 4.

[0090] However, a pad clip according to one aspect of this disclosure may have only the function of elastically pressing the inner pad and the outer pad radially inward. In this case, the pad clip may consist only of a single clip having a main body and a pair of pad pressing parts, i.e., a first discharge clip.

[0091] <First clip on the output side> Figures 21 to 31 show the first ejection clip 35 removed from the assembly. The first ejection clip 35 is formed by bending a single metal plate, such as a stainless steel plate, which has elasticity and corrosion resistance. The first ejection clip 35 has a symmetrical shape with respect to the axial direction. The first ejection clip 35 has a roughly cross shape when viewed radially.

[0092] The first ejection clip 35 is elastically mounted between the ejection end bridge 11 and the ejection center bridge 13.

[0093] In this example, the discharge-side first clip 35 has a main body portion 33 and a pair of pad pressing portions 34a and 34b, as well as a pair of first axial restricting portions 37a and 37b and a radial restricting portion 38. However, the discharge-side first clip may consist only of the main body portion 33 and the pair of pad pressing portions 34a and 34b, or it may also consist of the other parts.

[0094] Main body The main body 33 is mostly positioned radially inward of the recirculating circumferential bridge 15 and is elastically supported between the recirculating end bridge 11 and the recirculating center bridge 13.

[0095] The main body 33 has a substrate portion 39 provided in the middle of the circumferential direction, two first fixing portions 40a and 40b provided at one end in the circumferential direction, and one second fixing portion 41 provided at the other end in the circumferential direction.

[0096] The main body 33 is elastically supported between the return-side end bridge 11 and the return-side center bridge 13 by pressing the first fixing parts 40a and 40b against the other circumferential side surface of the return-side center bridge 13, and by pressing the second fixing part 41 against the one circumferential side surface of the return-side end bridge 11 via the return-side second clip 36. In other words, the circumferential position of the main body 33 is restricted by the return-side end bridge 11 and the return-side center bridge 13.

[0097] The substrate portion 39 has a flat plate shape and is located in the circumferential middle portion of the main body portion 33. The axial dimension of the substrate portion 39 is approximately the same as the axial dimension of the output-side circumferential bridge 15.

[0098] The base plate portion 39 is positioned radially inward of the circumferential middle portion of the return-side circumferential bridge 15 when the return-side first clip 35 is assembled to the caliper 2. As shown in Figure 12, the base plate portion 39 is pressed against the flat radially inward surface of the return-side circumferential bridge 15 when the inner pad 3 and outer pad 4 are assembled to the caliper 2.

[0099] The first fixing parts 40a and 40b are provided on one circumferential side of the main body 33. The first fixing parts 40a and 40b have a substantially L-shape when viewed radially and are connected to one circumferential end of the substrate 39.

[0100] The first fixing portion 40a, 40b has a base half that extends linearly in the axial direction, and a tip half that extends radially outward from the axially outer end of the base half as it moves toward one side in the circumferential direction.

[0101] As shown in Figure 9, the first fixing parts 40a and 40b are positioned on both sides of the circumferential bridge 15 on the recirculating side in the assembled state of the recirculating side pad clip 5, with respect to the axial direction.

[0102] The tips of the first fixing parts 40a and 40b are folded back radially outward and circumferentially to the other side. Therefore, the tip surfaces of the first fixing parts 40a and 40b are formed by convex curved surfaces.

[0103] The tips of the first fixing parts 40a and 40b press against the other side surface of the discharge-side center bridge 13 in the circumferential direction when the discharge-side pad clip 5 is assembled.

[0104] The second fixing portion 41 is provided on the other circumferential side of the main body portion 33. The second fixing portion 41 is connected to the other circumferential end of the substrate portion 39. The second fixing portion 41 has a substantially T-shape when viewed radially and a substantially horizontal J-shape end face when viewed axially.

[0105] The second fixing portion 41 extends radially inward as it moves toward the other side in the circumferential direction. The second fixing portion 41 and the leading halves of the first fixing portions 40a and 40b are arranged substantially parallel to each other.

[0106] As shown in Figure 12, the second fixing portion 41 is positioned radially inward of the recirculating circumferential bridge 15 when the recirculating pad clip 5 is assembled.

[0107] The tip of the second fixing portion 41 is folded back radially inward and circumferentially on one side. Therefore, the tip surface of the second fixing portion 41 is formed by a convex curved surface.

[0108] The tip of the second fixing portion 41 indirectly presses against one side surface of the re-entering end bridge 11 in the circumferential direction via the clamped portion 55 provided on the re-entering second clip 36, which will be described later.

[0109] Pad pressing area The pad pressing portions 34a and 34b press the outer peripheral edges 28a of the inner pad 3 and outer pad 4, respectively, to separate the inner pad 3 and outer pad 4 from the rotor 7 when the braking force is released, and to stabilize the position of the inner pad 3 and outer pad 4 when not braking.

[0110] A pair of pad pressing portions 34a and 34b are positioned on both sides of the main body portion 33 in the axial direction and press the outer peripheral edges 28a of the inner pad 3 and outer pad 4 radially inward. The pair of pad pressing portions 34a and 34b are connected to the ends on both sides of the substrate portion 39 in the axial direction. As shown in Figure 9, in the assembled state of the discharge-side pad clip 5, the pair of pad pressing portions 34a and 34b are positioned on both sides of the discharge-side circumferential bridge 15 in the axial direction.

[0111] The pad pressing portions 34a and 34b are formed by bending a strip-shaped plate that extends linearly in the axial direction from the substrate portion 39, as shown in Figure 30, multiple times. Specifically, the pad pressing portions 34a and 34b are formed by bending the base end of the strip-shaped plate radially outward at nearly 90 degrees, bending the portion of the strip-shaped plate near the base end radially outward at nearly 90 degrees, and folding the middle portion of the strip-shaped plate radially inward and axially inward in a partially cylindrical shape. As shown in Figure 28, the pad pressing portions 34a and 34b have an end face shape that is approximately horizontal U-shaped or approximately horizontal σ-shaped when viewed in the circumferential direction.

[0112] The pad pressing portions 34a and 34b have a rising portion 42, an outer plate portion 43, an inner plate portion 44, a first bent portion 45, a second bent portion 46, and a third bent portion 47.

[0113] The pad pressing sections 34a and 34b are comprised of a first bent section 45, a rising section 42, a second bent section 46, an outer plate section 43, a third bent section 47, and an inner plate section 44, in that order from the base end connected to the base plate section 39. In Figure 30, the boundaries of the base plate section 39, the first bent section 45, the rising section 42, the second bent section 46, the outer plate section 43, the third bent section 47, and the inner plate section 44 are indicated by dashed lines.

[0114] The rising portion 42 extends radially outward from the base portion 39, which is the part of the main body 33 to which the pad pressing portions 34a and 34b are connected. The rising portion 42 extends radially outward and axially outward from the radially outward end of the first bent portion 45. The inclination angle of the rising portion 42 with respect to the base portion 39 is not limited to this, but in the illustrated example it is approximately 60 degrees in the free state. In this example the rising portion 42 has a substantially flat shape. However, the rising portion may have a stepped shape.

[0115] The outer plate portion 43 has a substantially flat shape and extends linearly in the axial direction. The outer plate portion 43 is arranged substantially parallel to the base plate portion 39, which is the part of the main body portion 33 to which the pad pressing portions 34a and 34b are connected, when the pad pressing portions 34a and 34b are in a free state.

[0116] The inner plate portion 44 has a substantially flat shape. The inner plate portion 44 is positioned radially inward of the outer plate portion 43 and is inclined radially inward as it moves axially inward, and its radially inward surface presses against the outer peripheral edge portions 28a of the inner pad 3 and the outer pad 4. The inner plate portion 44 extends linearly axially inward and radially inward from the radially inward end of the third bent portion 47. The inclination angle of the inner plate portion 44 with respect to the base plate portion 39 is not limited to this, but in the illustrated example, it is approximately 15 degrees in the free state. The inner plate portion 44 presses against the other circumferential portion of the outer peripheral edge portion 28a of the backing plate 28 with its radially inward surface.

[0117] The first bent portion 45 connects the axially outer end of the substrate portion 39 to the radially inner end of the rising portion 42. The first bent portion 45 is bent such that it is convex on both the axially outer and radially inner sides. The first bent portion 45 has a single radius of curvature R1 and is substantially partially cylindrical in shape.

[0118] The second bent portion 46 connects the radially outer end of the rising portion 42 and the axially inner end of the outer plate portion 43. The second bent portion 46 is bent such that it is convex on both the axially inner and radially outer sides. The second bent portion 46 has a single radius of curvature R2 and is substantially partially cylindrical in shape.

[0119] The third bent portion 47 connects the axially outer end of the outer plate portion 43 to the axially outer end of the inner plate portion 44. The third bent portion 47 is bent so that the axially outer side is convex. The third bent portion 47 has a roughly C-shaped end face when viewed in the circumferential direction and has a roughly semi-cylindrical shape. The third bent portion 47 is axially opposite to the rising portion 42.

[0120] In this example, the third bent portion 47 has a composite shape and is composed of multiple bent portions with different radii of curvature. However, the third bent portion may have a single shape and a single radius of curvature.

[0121] The third bent portion 47 is composed of two bent portions. Specifically, the third bent portion 47 is composed of an outer bent portion 48 provided on the radially outward side and an inner bent portion 49 provided on the radially inward side.

[0122] In this example, the relationship between the plate width and radius of curvature of the three bent portions 45, 46, and 47 of the pad pressing portions 34a and 34b is designed to stably apply a pressing force to the inner pad 3 and outer pad 4 in a direction away from the rotor 7, even when the inner pad 3 and outer pad 4 are worn.

[0123] Specifically, even when the wear of the lining 27 of the inner pad 3 and the outer pad 4 progresses and the contact position of the outer peripheral edge portion 28a of the inner pad 3 and the outer pad 4 with respect to the inner plate portion 44 moves toward the rotor 7 side, the inclination angle of the inner plate portion 44 with respect to the substrate portion 39 does not become excessively small, that is, the substrate portion 39 and the inner plate portion 44 do not become parallel. The relationship between the plate widths and the radii of curvature of the three bending portions 45, 46, and 47 is regulated, and the rigidity of the third bending portion 47 is made higher than the rigidities of the first bending portion 45 and the second bending portion 46.

[0124] Hereinafter, the relationship between the plate widths and the radii of curvature of the three bending portions 45, 46, and 47 will be specifically described. Note that the plate width will be described using FIG. 30, and the radius of curvature will be described using FIG. 28.

[0125] 〈Relationship of plate width〉 The plate width H of the third bending portion 47 47 is, in most (almost all) of the third bending portion 47, the plate width H of the first bending portion 45 45 and the plate width H of the second bending portion 46 46 is wider (H 47 > H 45 , H 46 ). In other words, the third bending portion 47 has a wide portion 50 that is wider in plate width than the first bending portion 45 and the second bending portion 46. The wide portion 50 protrudes on both sides in the plate width direction (circumferential direction) more than the first bending portion 45 and the second bending portion 46. In this example, the plate width H of the first bending portion 45 45 and the plate width H of the second bending portion 46 46 are the same as each other (H 45 = H 46 ).

[0126] The maximum value of the plate width H of the third bending portion 47 47 is not limited to this, but in the illustrated example, it is approximately 1.4 times the plate width H of the first bending portion 45 45 and the plate width H of the second bending portion 46 46 .

[0127] In this example, the plate width H of the third bending portion 47 47In the third bend 47, the plate width H of the first bend 45 is approximately the same along the entire length of the third bend 47. 45 and the width H of the second bent portion 46 46 Because it is wider, the third bent portion 47 has a wide portion 50 along almost its entire length.

[0128] Specifically, the outer bent portion 48 constituting the third bent portion 47 has a wide portion 50 along its entire length, and the inner bent portion 49 constituting the third bent portion 47 has a wide portion 50 in at least a part of it. In this example, the inner bent portion 49 also has a wide portion 50 along almost its entire length.

[0129] The wide section 50 has the largest plate width among the pad pressing sections 34a and 34b.

[0130] In this example, the width H of the first bent section 45 45 and the width H of the second bent portion 46 46 While each of these remains constant, the plate width H of the third bend 47 47 This is not constant and varies depending on the position. Also, the third bend 47 has a plate width H 47 It has a part that changes. In other words, the wide part 50 has a plate width H 47 It has a part that changes. However, the third bent section (wide section) may have a constant plate width.

[0131] In this example, the third bent portion 47 has a plate width H that increases as it moves away from the outer plate portion 43 on its radially outer side. 47 It has a plate width expanding section 51a that gradually increases in width. Specifically, the plate width expanding section 51a is provided at the end of the outer bent section 48 that is closer to the outer plate section 43. Plate width H in the plate width expanding section 51a 47 The width increases linearly as it moves away from the outer plate portion 43. Therefore, in the unfolded shape of the pad pressing portions 34a and 34b, the widthwise side edges of the plate width expansion portion 51a have a linear shape and are inclined with respect to the center line O of the pad pressing portions 34a and 34b. However, the plate width in the plate width expansion portion of the third bend may change curvilinearly.

[0132] Furthermore, the third bent portion 47 has a plate width H that increases as it approaches the inner plate portion 44 on its radially inward side. 47 It has a plate width reduction section 52a where the width gradually decreases. Specifically, the plate width reduction section 52a is provided in the portion of the inner bend 49 excluding the end closer to the outer bend 48. Plate width H in the plate width reduction section 52a 47 The width decreases linearly as it approaches the inner plate portion 44. Therefore, in the unfolded shape of the pad pressing portions 34a and 34b, the widthwise side edge of the plate width reduction portion 52a has a linear shape and is inclined with respect to the center line O. However, the plate width in the plate width reduction portion of the third bend may change curvilinearly.

[0133] The third bent portion 47 has a plate width H between the plate width expanding portion 51a and the plate width reducing portion 52a. 47 It has a section 53 with a constant plate width that does not change. The section 53 with a constant plate width is provided in a range that spans the outer bend 48 and the inner bend 49. Plate width H of the third bend 47 47 This is maximized in the section 53 where the board width is constant.

[0134] <Relationship with radius of curvature> The third bent portion 47 has a larger radius of curvature than the first bent portion 45 and the second bent portion 46.

[0135] In this example, the third bent portion 47 is composed of an outer bent portion 48 and an inner bent portion 49, so that each of the outer bent portion 48 and the inner bent portion 49 has a larger radius of curvature than the first bent portion 45 and the second bent portion 46. Radius of curvature of the outer bent portion 48 R3 O The radius of curvature of the inner bend 49 is 4.5 times or more the radius of curvature R1 of the first bend 45 and the radius of curvature R2 of the second bend 46. I This radius is three times or more the radius of curvature R1 of the first bent portion 45 and the radius of curvature R2 of the second bent portion 46.

[0136] In this example, the radius of curvature R3 of the outer bend 48 O The radius of curvature R3 of the inner bend 49 I Larger than (R3 O >R3 I ).

[0137] The discharge-side pad clip 5 in this example is provided with through holes 54 in the area including the second bent portion 46 extending from the rising portion 42 to the outer plate portion 43. The through holes 54 are composed of slits (elongated holes) that extend linearly in the axial direction, and one is provided in the widthwise center of the pad pressing portions 34a and 34b. One end of the through hole 54 is located radially inward of the rising portion 42, and the other end is located at the end of the outer plate portion 43 that is closer to the third bent portion 47. The number of through holes is not particularly limited, and multiple holes can be provided. The shape of the through holes is also not particularly limited, and they may be circular or of other shapes.

[0138] In this example, the exit-side pad clip 5 has a third bent portion 47 that has a wider portion 50 than the first bent portion 45 and the second bent portion 46, and a larger radius of curvature R3 (R3) than the first bent portion 45 and the second bent portion 46. O , R3 I The first configuration is provided, and the second configuration is also provided, wherein the third bent portion 47 has a radius of curvature that is at least larger than that of the first bent portion 45, and the through hole 54 is provided in the range including the second bent portion 46 extending from the rising portion 42 to the outer plate portion 43. However, if only one of the first configuration or the second configuration is provided, the effect of making the rigidity of the third bent portion 47 higher than that of the first bent portion 45 and the second bent portion 46 can be obtained. If both the first configuration and the second configuration are provided, the effect of making the rigidity of the third bent portion 47 higher than that of the first bent portion 45 and the second bent portion 46 can be obtained more significantly than if only one of the first configuration or the second configuration is provided.

[0139] In this example, the outer plate portion 43 increases in plate width H as it approaches the third bend portion 47. 43 It has a plate width expanding section 51b that gradually increases in width. The plate width expanding section 51b is provided at the end of the outer plate portion 43 that is closer to the third bend 47. Plate width H in the plate width expanding section 51b 43The width increases linearly as it approaches the third bend 47. Therefore, in the unfolded shape of the pad pressing portions 34a and 34b, the widthwise side edges of the plate width expansion portion 51b have a linear shape and are inclined with respect to the center line O. However, the plate width in the plate width expansion portion of the outer plate may change curvilinearly.

[0140] In this example, the width of the pad pressing portions 34a and 34b changes smoothly and continuously between the widened portion 51b of the outer plate portion 43 and the widened portion 51a of the third bent portion 47.

[0141] Furthermore, the inner plate portion 44 has a plate width H that increases as it moves away from the third bend portion 47. 44 It has a section 52b that gradually reduces the width of the board. The section 52b is provided along the entire length of the inner board section 44. The board width H of the inner board section 44 44 The width decreases linearly as it moves away from the third bend 47. Therefore, in the unfolded shape of the pad pressing portions 34a and 34b, the widthwise side edges of the plate width reduction portion 52b have a linear shape and are inclined with respect to the center line O. However, the inner plate portion may have a plate width reduction portion in only a part of it. Also, the plate width in the plate width reduction portion of the inner plate portion may change curvilinearly.

[0142] Next, referring to Figure 31, we will explain how the posture of the pad pressing portions 34a and 34b changes when the linings 27 of the inner pad 3 and outer pad 4 are new and when they are worn. In Figure 31, the posture of the pad pressing portions 34a and 34b in the free state is shown by dashed lines, and the posture of the pad pressing portions 34a and 34b in the elastically deformed state is shown by solid lines.

[0143] As shown in Figure 31(A), when the inner pad 3 and outer pad 4 are new, the axially inner portion of the outer peripheral edge 28a of the backing plate 28 abuts against the axially outer portion of the radially inner surface of the inner plate portion 44. As a result, the pad pressing portions 34a and 34b undergo elastic deformation (bending deformation) so as to be pushed radially outward starting from the first bending portion 45. In this state, the inclination angle α of the inner plate portion 44 with respect to the substrate portion 39 is about 10 to 30 degrees, and in the illustrated example, it is about 20 degrees.

[0144] As wear progresses on the lining 27 of the inner pad 3 and outer pad 4, as shown in Figure 31(B), the backing plate 28 moves axially inward, and the axially inward portion of the outer peripheral edge 28a of the backing plate 28 comes into contact with the axially intermediate portion of the radially inward surface of the inner plate portion 44. In this state, the amount of elastic deformation of the pad pressing portions 34a and 34b in this example is smaller than in the case of Figure 31(A), but they remain elastically deformed so as to be pushed radially outward starting from the first bending portion 45. The inclination angle α of the inner plate portion 44 with respect to the substrate portion 39 becomes approximately 3 degrees or more, and in the illustrated example, it is approximately 5 degrees.

[0145] In this example, the elasticity (reaction force) of the pad pressing portions 34a and 34b is supported by the recirculating circumferential bridge 15, as the radial outer surface of the substrate portion 39 is pressed against the radial inner surface of the recirculating circumferential bridge 15.

[0146] 《First Axis Control Section》 The first axial restricting portions 37a and 37b extend radially outward from the base half of the first fixing portions 40a and 40b.

[0147] As shown in Figure 9, the first axial restricting portions 37a and 37b are positioned on both axial sides of the recirculating circumferential bridge 15 when the recirculating pad clip 5 is assembled, and are in close proximity to both axial sides of the recirculating circumferential bridge 15. By contacting the axial sides of the recirculating circumferential bridge 15, the axial position of the recirculating first clip 35 is restricted and the tilting of the recirculating first clip 35 is suppressed.

[0148] Radial regulating section The radial restricting portion 38 has a flat plate shape and is provided between the leading halves of the first fixing portions 40a and 40b in the axial direction.

[0149] The radial restricting portion 38 contacts the radially inner surface of the rotating circumferential bridge 15 when the rotating first clip 35 is assembled to the caliper 2. This prevents the contact position of the tips of the first fixing portions 40a and 40b with respect to the other circumferential side surface of the rotating center bridge 13 from shifting radially outward from the normal position.

[0150] <Second clip on the output side> The second exit clip 36 is formed by bending a single metal plate, such as a stainless steel plate, which has elasticity and corrosion resistance. The second exit clip 36 has a shape that is symmetrical with respect to the axial direction. The second exit clip 36 is attached to the exit end bridge 11 by elastically clamping one end of the exit end bridge 11 in the circumferential direction from both radial sides.

[0151] The ejection-side second clip 36 has a clamped portion 55, two outer clamping portions 56a, 56b, one inner clamping portion 57, connecting plate portions 58a, 58b, and a pair of second axial restricting portions 59a, 59b.

[0152] The clamped portion 55 is located in the axial middle of the ejection-side second clip 36 and extends radially. The radial middle portion of the clamped portion 55 is bent so that one side in the circumferential direction is convex, and has an end face shape that is approximately horizontally V-shaped when viewed in the axial direction.

[0153] As shown in Figure 12, the clamped portion 55 is positioned (clamped) between one circumferential side surface of the rotating end bridge 11 and the tip of the second fixing portion 41. This causes the clamped portion 55 and the tip of the second fixing portion 41 to engage radially, preventing the radial position of the tip of the second fixing portion 41 from shifting radially inward.

[0154] The two outer clamping portions 56a and 56b and the one inner clamping portion 57 elastically clamp one circumferential end of the rotating end bridge 11 from both radial sides.

[0155] The outer clamping portions 56a and 56b each have a flat plate shape and are spaced apart in the axial direction. As shown in Figure 9, the outer clamping portions 56a and 56b are positioned on both sides in the axial direction, flanking the rotating circumferential bridge 15. The outer clamping portions 56a and 56b cover the moment bearing surface 23 from the radially outside and elastically press against the moment bearing surface 23. The outer clamping portions 56a and 56b and the moment bearing surface 23 are in surface contact.

[0156] As shown in Figure 7, the outer clamping portions 56a and 56b are clamped between the moment bearing surface 23 and the lugs 32 of the backing plate 28. As a result, during braking, the outer clamping portions 56a and 56b receive the moment force acting on the inner pad 3 and outer pad 4. The outer clamping portions 56a and 56b reduce the drag resistance of the inner pad 3 and outer pad 4, suppress damage between the moment bearing surface 23 and the lugs 32, and ensure the sliding properties of the inner pad 3 and outer pad 4.

[0157] The inner clamping portion 57 has a corrugated shape and protrudes to the other side in the circumferential direction from the outer clamping portions 56a and 56b. Of the inner clamping portion 57, the portion that protrudes to the other side in the circumferential direction from the outer clamping portions 56a and 56b is bent so that the radially outward side is convex, and has an end face shape that is approximately inverted V-shaped when viewed in the axial direction.

[0158] As shown in Figure 12, the inner clamping portion 57 is positioned inside the recess 24a provided in the reversing end bridge 11, pressing the bottom surface of the recess 24a radially outward and engaging with the bottom surface in the circumferential direction. The circumferential engagement between the inner clamping portion 57 and the bottom surface of the recess 24a prevents the reversing second clip 36 from tilting in a way that would cause it to detach from the reversing end bridge 11, and prevents a gap from forming between the outer clamping portions 56a and 56b and the moment bearing surface 23.

[0159] The connecting plates 58a and 58b connect one circumferential end of the outer clamping portions 56a and 56b to one circumferential end of the inner clamping portion 57. The connecting plates 58a and 58b are provided at one circumferential end of the discharge-side second clip 36 and have a substantially L-shaped end face when viewed in the axial direction.

[0160] The connecting plate portions 58a and 58b are arranged spaced apart in the axial direction. The axially inner edges of the connecting plate portions 58a and 58b engage with the second fixing portion 41 in the axial direction. This restricts the axial position of the second fixing portion 41.

[0161] The second axial restricting portions 59a and 59b are provided at the axially inward ends of the outer clamping portions 56a and 56b. The second axial restricting portions 59a and 59b are bent radially outward as they move axially inward.

[0162] As shown in Figure 9, the second axial restricting portions 59a and 59b are positioned in close proximity to and opposite the axial side surface of the recirculating circumferential bridge 15. Therefore, the axial position of the recirculating second clip 36 is restricted by the contact of the second axial restricting portions 59a and 59b with the axial side surface of the recirculating circumferential bridge 15.

[0163] <How to attach the pad clip on the outlet side> In this example, the discharge-side pad clip 5 is assembled in the following procedure before the inner pad 3 and outer pad 4 are assembled to the caliper 2.

[0164] First, the second return clip 36, which constitutes the return pad clip 5, is assembled to the caliper 2. Specifically, the second return clip 36 is assembled to one end of the return end bridge 11 in the circumferential direction by elastically clamping the return end bridge 11 from both radial sides with the outer clamping portions 56a and 56b and the inner clamping portion 57.

[0165] With the second retractable clip 36 assembled, the outer clamping portions 56a and 56b cover the moment bearing surface 23, and the clamped portion 55 covers one side of the retractable end bridge 11 in the circumferential direction. The inner clamping portion 57 presses the bottom surface of the recess 24a radially outward and engages with the bottom surface of the recess 24a in the circumferential direction. The second axial restricting portions 59a and 59b are in close proximity to and facing the axial side surface of the retractable circumferential bridge 15.

[0166] Next, the first reversible clip 35 is attached to the caliper 2, which has the second reversible clip 36 already installed.

[0167] Specifically, the main body 33 of the first retractable clip 35 is positioned radially inward of the retractable circumferential bridge 15, and the tips of the first fixing parts 40a and 40b are brought into contact with the other circumferential side surface of the retractable center bridge 13.

[0168] Subsequently, the second fixing portion 41 is pushed upward radially outward. This causes the tip of the second fixing portion 41 to engage radially with the clamped portion 55 and to press against one circumferential side surface of the rotating end bridge 11 via the clamped portion 55. This assembles the main body portion 33 between the rotating end bridge 11 and the rotating center bridge 13.

[0169] With the first ejection clip 35 assembled, the second fixing portion 41 engages radially with the clamped portion 55 and axially with the connecting plate portions 58a and 58b of the second ejection clip 36. The first axial restricting portions 37a and 37b are positioned in close proximity to and opposite the axial side surface of the ejection circumferential bridge 15.

[0170] [Detailed structure of the insertion side pad clip] Refer to Figures 32 to 38 to explain the structure of the insertion-side pad clip 6.

[0171] The entry-side pad clip 6 functions to press the outer peripheral edge 28a of the inner pad 3 and outer pad 4 radially inward. The entry-side pad clip 6 also functions to suppress damage between the torque transmission surface 31 and the torque receiving surface 21.

[0172] The entry-side pad clip 6 is installed between the entry-side end bridge 10 and the entry-side center bridge 12.

[0173] The entry-side pad clip 6 is formed by bending a single metal plate, such as a stainless steel plate, which has elasticity and corrosion resistance. The entry-side pad clip 6 has a symmetrical shape with respect to the axial direction.

[0174] The re-entry pad clip 6 has a main body portion 33a, a pair of pad pressing portions 34c, 34d, a pair of first axial restricting portions 37c, 37d, a radial restricting portion 38a, a pair of second axial restricting portions 59c, 59d, and a pair of clamped plate portions 60a, 60b.

[0175] Of the components of the entry-side pad clip 6, the pair of pad pressing portions 34c and 34d have the same configuration as the pair of pad pressing portions 34a and 34b that constitute the exit-side pad clip 5, except that they do not have through holes. Also, of the components of the entry-side pad clip 6, the pair of first axial restricting portions 37c and 37d, and the radial restricting portion 38a have the same configuration as the pair of first axial restricting portions 37a and 37b, and the radial restricting portion 38 that constitute the exit-side pad clip 5. For this reason, the explanation of the pair of pad pressing portions 34c and 34d, the pair of first axial restricting portions 37c and 37d, and the radial restricting portion 38a will be omitted.

[0176] The main body portion 33a is elastically supported between the entry-side end bridge 10 and the entry-side center bridge 12. The main body portion 33a has a base portion 39a provided in the circumferential middle portion, two first fixing portions 40c and 40d provided on the other circumferential side portion, and one second fixing portion 41a provided on the one circumferential side portion.

[0177] With the entry-side pad clip 6 assembled, the base plate portion 39a is positioned radially inward of the entry-side circumferential bridge 14. The first fixing portions 40c and 40d are positioned on both sides of the entry-side circumferential bridge 14 in the axial direction and press circumferentially against one side surface of the entry-side center bridge 12.

[0178] The substrate portion 39a has a configuration common to the substrate portion 39 that constitutes the discharge-side pad clip 5, and the first fixing portions 40c and 40d have a configuration common to the first fixing portions 40a and 40b that constitute the discharge-side pad clip 5. For this reason, a detailed explanation of the substrate portion 39a and the first fixing portions 40c and 40d will be omitted.

[0179] The second fixing portion 41a has a substantially crank-shaped end face when viewed axially and is connected to one end of the base portion 39a in the circumferential direction. The tip of the second fixing portion 41a is bent so that the radially outward side is convex and has a substantially inverted V-shaped end face when viewed axially. As shown in Figure 13, when the entry-side pad clip 6 is assembled, the tip of the second fixing portion 41a is positioned inside the recess 24a provided in the entry-side end bridge 10 and presses the bottom surface of the recess 24a radially outward.

[0180] The clamped plate portions 60a and 60b each have a flat plate shape and are arranged approximately perpendicular to the base plate portion 39. The clamped plate portions 60a and 60b are connected to both axial edges of one circumferential side portion of the second fixing portion 41a.

[0181] As shown in Figures 8 and 10, the clamped plate portions 60a and 60b cover the torque receiving surface 21 provided on the entry-side end bridge 10 when the entry-side pad clip 6 is assembled. The clamped plate portions 60a and 60b are positioned between the torque receiving surface 21 and the torque transmission surface 31 provided on the back plate 28.

[0182] The second axial restricting portions 59c and 59d are provided at the axially inward ends of the clamped plate portions 60a and 60b. The second axial restricting portions 59c and 59d are bent to the other circumferential side relative to the clamped plate portions 60a and 60b. As shown in Figure 10, the second axial restricting portions 59c and 59d are arranged in close proximity to both axial sides of the entry-side circumferential bridge 14. The axial position of one circumferential portion of the entry-side pad clip 6 is restricted by the contact of the second axial restricting portions 59c and 59d with the axial side surface of the entry-side circumferential bridge 14.

[0183] With the discharge-side pad clip 5 and the entry-side pad clip 6 of this example, even when the lining 27 of the inner pad 3 and outer pad 4 is worn down, a stable pressing force can be applied to the outer peripheral edge 28a of the inner pad 3 and outer pad 4 in a direction that separates them from the rotor 7.

[0184] In other words, each of the pad pressing portions 34a and 34b constituting the exit-side pad clip 5, and the pad pressing portions 34c and 34d constituting the entry-side pad clip 6, has a rising portion 42, an outer plate portion 43, an inner plate portion 44, a first bent portion 45, a second bent portion 46, and a third bent portion 47. Of these, the third bent portion 47 has a wider portion 50 that is wider than the first bent portion 45 and the second bent portion 46, and has a larger radius of curvature R3 than the first bent portion 45 and the second bent portion 46.

[0185] Therefore, the rigidity of the third bend 47 is higher than that of the first bend 45 and the second bend 46. Consequently, the pad pressing portions 34a to 34d elastically deform, mainly starting from the first bend 45, so as to be pushed radially outward. As a result, as shown in Figure 31(B), even when wear progresses on the lining 27 of the inner pad 3 and the outer pad 4, the pad pressing portions 34a to 34d remain elastically deformed, starting from the first bend 45, so as to be pushed radially outward, preventing the inclination angle of the inner plate portion 44 with respect to the base portion 39 from becoming excessively small. In other words, it is possible to prevent the base portion 39 and the inner plate portion 44 from becoming parallel. As a result, even when wear progresses on the lining 27 of the inner pad 3 and the outer pad 4, a stable pressing force can be applied to the outer peripheral edge 28a of the inner pad 3 and the outer pad 4 in a direction away from the rotor 7.

[0186] Furthermore, in this example, the pad pressing portions 34a and 34b constituting the return-side pad clip 5 are provided with through holes 54 in the range including the second bent portion 46 extending from the rising portion 42 to the outer plate portion 43. As a result, the rigidity of the second bent portion 46 is sufficiently reduced, so the rigidity of the third bent portion 47 is sufficiently higher than the rigidity of the first bent portion 45 and the second bent portion 46. Therefore, a more stable pressing force can be applied from the pad pressing portions 34a and 34b to the inner pad 3 and outer pad 4 in the direction away from the rotor 7.

[0187] In this example, the third bent portion 47 has a plate width H that increases as it moves away from the outer plate portion 43 on its radially outer side. 47 It has a plate width expanding section 51a that gradually increases in width, and on its radially inner side, the plate width H increases as it approaches the inner plate section 44. 47 It has a section 52a where the plate width gradually decreases. As a result, the change in plate width of the third bend 47 becomes smoother, and stress concentration in a part of the third bend 47 can be prevented. Furthermore, since the plate width is largest in the middle part of the third bend 47, the amount of elastic deformation of the third bend 47 can be effectively reduced.

[0188] The pad pressing portions 34a and 34b of the exiting pad clip 5 and the pad pressing portions 34c and 34d of the re-entering pad clip 6 each have an inner plate portion 44 with a plate width H that increases as it moves away from the third bending portion 47. 44 It has a plate width reduction section 52b that gradually decreases in size. Therefore, the rigidity of the inner plate section 44 can be reduced as it approaches the tip of the inner plate section 44. This prevents the pressing force applied to the outer peripheral edge 28a of the inner pad 3 and outer pad 4 from becoming excessive.

[0189] The pad pressing portions 34a and 34b of the exit-side pad clip 5 and the pad pressing portions 34c and 34d of the entry-side pad clip 6 each have a third bent portion 47 which is composed of an outer bent portion 48 that is radially outward and an inner bent portion 49 that is radially inward, and the radius of curvature R3 O However, the radius of curvature R3 of the inner bend 49 I It is larger than (R3 O >R3 I Therefore, the rigidity of the third bent portion 47 is lower in the radially inner portion (inner bent portion 49) than in the radially outer portion (outer bent portion 48). Consequently, it is possible to suppress the application of excessive pressure to the outer peripheral edge portions 28a of the inner pad 3 and outer pad 4.

[0190] The main body portion 33 constituting the exit-side pad clip 5 is positioned radially inward of the exit-side circumferential bridge 15, and the main body portion 33a constituting the entry-side pad clip 6 is positioned radially inward of the entry-side circumferential bridge 14. Therefore, the exit-side pad clip 5 and the entry-side pad clip 6 can be applied to a disc brake device 1 equipped with a caliper 2 having an exit-side circumferential bridge 15 and an entry-side circumferential bridge 14.

[0191] In particular, the reaction force of the pad pressing portions 34a and 34b is supported by the return-side circumferential bridge 15 by pressing the radially outer surface of the main body portion 33 constituting the return-side pad clip 5 against the radially inner surface of the return-side circumferential bridge 15. Therefore, the pressing force applied from the pad pressing portions 34a and 34b to the inner pad 3 and outer pad 4 can be stabilized.

[0192] In this example, the return-side pad clip 5 is composed of a return-side first clip 35 having a main body 33 and a pair of pad pressing portions 34a and 34b, and a return-side second clip 36 that is assembled to the return-side end bridge 11. Therefore, the return-side first clip 35 and the return-side second clip 36 can each perform different functions. Specifically, in this example, the return-side first clip 35 is made to press the outer peripheral edge portions 28a of the inner pad 3 and outer pad 4 radially inward, and the return-side second clip 36 is made to reduce the drag resistance of the inner pad 3 and outer pad 4.

[0193] The exit-side pad clip 5 and the entry-side pad clip 6 are each equipped with first axial restricting portions 37a, 37b and second axial restricting portions 59a to 59d, which can engage with the exit-side circumferential bridge 15 or the entry-side circumferential bridge 14, respectively. This allows for proper restriction of the axial position of the exit-side pad clip 5 and the entry-side pad clip 6.

[0194] [Example 2] A second example of the embodiment of this disclosure will be described with reference to Figure 39.

[0195] This example is a modification of the first example. In this example, the pad pressing portions 34e and 34f constituting the discharge-side first clip 35a do not have the through holes 54 that are present in the pad pressing portions 34a and 34b of the first example.

[0196] In this example, the pad pressing portions 34e and 34f do not have through holes 54, resulting in a higher rigidity of the second bent portion 46 compared to the structure of the first example. However, the third bent portion 47 has a wider portion 50 than the first bent portion 45 and the second bent portion 46, and has a larger radius of curvature than the first bent portion 45 and the second bent portion 46. Therefore, the rigidity of the third bent portion 47 is higher than that of the first bent portion 45 and the second bent portion 46. Consequently, even as wear progresses on the inner pad 3 and the outer pad 4, a stable pressing force can be applied to the inner pad 3 and the outer pad 4 in a direction that moves them away from the rotor 7.

[0197] The other components and effects of the second example are the same as those of the first example.

[0198] [Example 3] A third example of the embodiments of this disclosure will be described with reference to Figures 40 to 42.

[0199] This example is a modification of the first example. The entry-side pad clip 6a in this example further has the function of pressing the entry-side edge portion 28b of the inner pad 3 and outer pad 4 toward the other side in the circumferential direction. For this purpose, the entry-side pad clip 6a further includes a pair of circumferential pressing portions 61a, 61b.

[0200] The circumferential pressing portions 61a and 61b extend radially inward from the clamped plate portions 60a and 60b. The circumferential pressing portions 61a and 61b have a strip shape that is elongated in the radial direction. The circumferential pressing portions 61a and 61b are spaced apart in the axial direction and arranged substantially parallel to each other.

[0201] When the inner pad 3 and outer pad 4 are assembled, the circumferential pressing portions 61a and 61b are pressed circumferentially by the entry-side edge portion 28b of the backing plate 28, causing them to elastically deform (flex) and press the entry-side edge portion 28b of the backing plate 28 toward the other side in the circumferential direction.

[0202] In this example, when not braking, the outer surface of the pin 20 is brought into contact with one side of the inner circumferential surface of the through-hole 30. Therefore, even when a brake tangential force F1 is applied to the inner pad 3 and outer pad 4 during forward braking, the inner pad 3 and outer pad 4 are prevented from moving to the other side in the circumferential direction, and collision between the inner circumferential surface of the through-hole 30 and the pin 20 is prevented. As a result, the generation of abnormal noise due to collision between the through-hole 30 and the pin 20 is suppressed.

[0203] The other components and effects of the third example are the same as those of the first example.

[0204] Although embodiments relating to one aspect of this disclosure have been described above, the present invention is not limited thereto and can be modified as appropriate without departing from the technical spirit of the invention. Furthermore, the structures of each example of the embodiments can be combined as appropriate, as long as no inconsistencies arise.

[0205] The structure of the pad clip of the present invention is not limited to the structures of each example of the embodiment, and can be modified as appropriate. [Explanation of Symbols]

[0206] 1. Disc brake system 2 Caliper 3 Inner pads 4 Outer pads 5 times side pad clip 6, 6a Insertion side pad clip 7 rotors 8 Inner Body 9 Outer Body 10-step entry end bridge 11th exit end bridge 12-step entry-side center bridge 13th Exit Center Bridge 14-step entry-side circumferential bridge 15-fold exit-side circumferential bridge 16 cylinders 17 Inner Piston 18 Outer Pistons 19 Mounting base 20 pins 21 Torque receiving surface 22 Receiving recess 23 Moment bearing surface 24, 24a recess 25 Bridge connection section 26 Window section 27 Lining 28 Backing 28a Outer edge 28b Inversion side edge 28c Supination side edge 29 Overhang 30 through hole 31 Torque transmission surface 32 Ears 33, 33a Main body 34a, 34b, 34c, 34d, 34e, 34f Pad pressing area 35, 35a First clip on the output side 36th time, second clip on the exit side 37a, 37b 1st axis direction restriction part 38, 38a Radial restricting section 39, 39a Board part 40a, 40b, 40c, 40d 1st fixed part 41, 41a 2nd fixed part 42. Rising section 43 Outer plate part 44 Inner plate part 45 1st bending part 46 2nd bending part 47 Third bend 48 Outer bend 49 Inner bend 50 Wide section 51a, 51b Enlarged board width section 52a, 52b Plate width reduction part 53 Constant board width section 54 Through hole 55 Clamped part 56a, 56b Outer clamping part 57 Inner clamping part 58a, 58b Connecting plate section 59a, 59b, 59c, 59d Second Axis Direction Regulation Section 60a and 60b were held hostage. 61a, 61b Circumferential Pressure Department

Claims

1. A metal plate pad clip for a disc brake device, which is attached to a caliper having an inner body and an outer body arranged on both axial sides of a rotor, and an end bridge and a center bridge arranged circumferentially spaced apart and connecting the inner body and the outer body in the axial direction, respectively, and elastically presses a pair of pads, A main body portion elastically supported between the center bridge and the end bridge, It comprises a pair of pad pressing parts arranged on both sides of the main body in the axial direction and pressing the pair of pads radially inward, The pair of pad pressing portions are, The main body portion includes a rising portion that extends radially outward from the portion to which the pad pressing portion is connected, In its free state, the outer plate portion is arranged substantially parallel to the portion of the main body to which the pad pressing portion is connected, and is substantially flat in shape and extends in the axial direction, An inner plate portion, which is arranged radially inward of the outer plate portion and is inclined radially inward as it approaches axially inward, and has a substantially flat shape that presses the outer edge of the pad with its radially inward surface, A first bent portion connecting the main body portion and the radially inner end of the rising portion, A second bent portion connecting the radially outer end of the rising portion and the axially inner end of the outer plate portion, Each has a third bent portion connecting the axially outer end of the outer plate portion and the axially outer end of the inner plate portion, The third bent portion has a wider section than the first and second bent portions, and has a larger radius of curvature than the first and second bent portions. Pad clips for disc brake systems.

2. The pad clip for a disc brake device according to claim 1, wherein the third bent portion has a plate width expanding portion on its radially outer side, the plate width of which gradually increases as it moves away from the outer plate portion.

3. The third bent portion has a plate width reduction portion on its radially inner side, wherein the plate width gradually decreases as it approaches the inner plate portion, as described in claim 1, for the disc brake device pad clip.

4. The inner plate portion has a plate width reduction portion in which the plate width gradually decreases as it moves away from the third bent portion, the pad clip for a disc brake device according to claim 1.

5. The pad clip for a disc brake device according to claim 1, wherein the outer plate portion has a plate width expansion portion in which the plate width gradually increases as it approaches the third bend portion.

6. The third bent portion consists of an outer bent portion provided on the radially outer side of the third bent portion and an inner bent portion provided on the radially inner side of the third bent portion. The outer bent portion has a larger radius of curvature than the first bent portion and the second bent portion. The inner bend is larger than the first bend and the second bend, and has a different radius of curvature than the outer bend. A pad clip for a disc brake device according to claim 1.

7. The pad clip for a disc brake device according to claim 6, wherein the outer bent portion has the wide portion along its entire length, and the inner bent portion has the wide portion in at least a part thereof.

8. The pad clip for a disc brake device according to claim 6, wherein the outer bent portion has a larger radius of curvature than the inner bent portion.

9. A metal plate pad clip for a disc brake device, which is attached to a caliper having an inner body and an outer body arranged on both axial sides of a rotor, and a center bridge and an end bridge arranged circumferentially spaced apart and connecting the inner body and the outer body in the axial direction, and elastically pressing a pair of pads, A main body portion elastically supported between the center bridge and the end bridge, It comprises a pair of pad pressing parts arranged on both sides of the main body in the axial direction and pressing the pair of pads radially inward, The pair of pad pressing portions are, The main body portion includes a rising portion that extends radially outward from the portion to which the pad pressing portion is connected, In its free state, the outer plate portion is arranged substantially parallel to the portion of the main body to which the pad pressing portion is connected, and is substantially flat in shape and extends in the axial direction, An inner plate portion, which is arranged radially inward of the outer plate portion and is inclined radially inward as it approaches axially inward, and has a substantially flat shape that presses the outer edge of the pad with its radially inward surface, A first bent portion connecting the main body portion and the radially inner end of the rising portion, A second bent portion connecting the radially outer end of the rising portion and the axially inner end of the outer plate portion, Each has a third bent portion connecting the axially outer end of the outer plate portion and the axially outer end of the inner plate portion, The third bent portion has at least a larger radius of curvature than the first bent portion. A through hole is provided in the range including the second bent portion extending from the rising portion to the outer plate portion. Pad clips for disc brake systems.

10. A caliper having an inner body and an outer body arranged on both axial sides of a rotor, and an end bridge and a center bridge arranged circumferentially and connecting the inner body and the outer body in the axial direction, respectively. A pair of pads supported so as to be axially movable relative to the caliper, The caliper is equipped with a metal plate pad clip that is attached to the caliper and elastically presses against the pair of pads, A disc brake device wherein the pad clip is a pad clip for a disc brake device according to any one of claims 1 to 9.

11. The caliper further has a circumferential bridge that spans the center bridge and the end bridge in the circumferential direction. The disc brake device according to claim 10.

12. The disc brake device according to claim 11, wherein the radial outer surface of the main body is pressed against the radial inner surface of the circumferential bridge by the elasticity of the pair of pad pressing portions.

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