JP2016121715A - Shim set and caliper assembly with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shim set capable of restricting dropout and removal of an inner shim and an outer shim at the time of work without damaging role of the inner shim and the outer shim.SOLUTION: The shim set of this invention is set in such a way that an inner shim 5 has fitting parts 52 fitted to a brake pad 4, an inner shim side first engaging part 53 arranged at an outside part of a rotor radial direction and an inner shim side second engaging part 54 arranged at an inside part of the rotor radial direction, the outer shim 6 has outer shim side first engaging parts 65 arranged at an outside part of a rotor radial direction and outer shim side second engaging parts 66 arranged at an inside part of the rotor radial direction, the inner shim side first engaging part 53, the outer shim side first engaging parts 65, and the inner shim side second engaging parts 54 and the outer shim side second engaging parts 66 are engaged to each other in a rotor axial direction in such a way that the outer shim 6 can be moved relatively in respect to the inner shim 5 by a predetermined amount in a rotor peripheral direction and a rotor radial direction by relatively sliding in a rotor peripheral direction while overlapping the inner shim main body 51 and the outer shim main body 61.SELECTED DRAWING: Figure 24

Description

  The present invention relates to a shim set and a caliper assembly including the same.

  The shim set is an inner shim and an outer shim, and is a member disposed between a brake pad and a piston in the disc brake device. The inner shim and the outer shim play a role in the caliper assembly to equalize the surface pressure to the back plate of the brake pad, absorb the vibration of the brake pad, and suppress the brake squeal. An example of a caliper assembly including an inner shim and an outer shim is described in, for example, Japanese Patent Application Laid-Open No. 2011-241951.

JP 2011-241951 A

  In the process of assembling the caliper assembly, the inner shim and the outer shim are assembled to the brake pad in a superposed state. Here, the operator must work with care so that the inner shim and the outer shim are not separated and fallen off. On the other hand, if the inner shim and the outer shim are completely fitted, the role of the shim set may not be sufficiently achieved. The present inventor newly discovered that there is room for improvement in the construction of the inner shim and the outer shim from the viewpoint of the assembly process.

  The present invention has been made in view of such circumstances, and a shim set and a caliper assembly that can suppress the falling off of the inner shim and the outer shim during work without impairing the roles of the inner shim and the outer shim. The purpose is to provide.

  The shim set of the present invention is a shim set assembled to a brake pad pressed toward the disc rotor by a pressing member, and an inner shim disposed on the brake pad side between the brake pad and the pressing member, An outer shim disposed on the inner side of the pressing member between the brake pad and the pressing member, the radial direction of the disk rotor is referred to as the rotor radial direction, and the circumferential direction of the disk rotor is defined as the radial direction of the disk rotor. When called the rotor circumferential direction and the axial direction of the disk rotor is called the rotor axial direction, the inner shim is formed on the inner shim main body and the inner shim main body and has a tightening margin with respect to the brake pad. The inner shim side first engagement provided on the outer side in the rotor radial direction of the outer edge portion of the inner shim body portion And an inner shim side second engaging portion provided on the inner side in the rotor radial direction among the outer edge portions of the inner shim body portion, the outer shim being an outer shim body portion and the outer shim body. A restricting portion that restricts relative movement of the rotor with respect to the brake pad in a circumferential direction to a predetermined amount, and an outer shim side first engagement portion provided on the outer side in the rotor radial direction of the outer edge portion of the outer shim body portion, An outer shim side second engaging portion provided on the inner side in the rotor radial direction of the outer edge portion of the outer shim main body, and the inner shim side first engaging portion and the outer shim side first engaging portion. The inner shim side second engaging portion and the outer shim side second engaging portion are slid relative to each other in the rotor circumferential direction by overlapping the inner shim main body portion and the outer shim main body portion, The outer shim is movable relative to the inner shim by a predetermined amount in the circumferential direction of the rotor and in the rotor radial direction. To engage the direction.

  According to the present invention, the inner shim and the outer shim are relatively moved (slid) in the circumferential direction of the rotor so that the inner shim-side first engaging portion and the outer shim-side first engaging portion are engaged in the rotor axial direction. The inner shim side second engaging portion and the outer shim side second engaging portion are also engaged in the rotor axial direction. The rotor axial direction is a direction perpendicular to both surfaces of the overlapping inner shim body and outer shim body. Thereby, after the combination, the inner shim and the outer shim are not disassembled in the axial direction of the rotor, and the falling off of the inner shim or the outer shim during the operation is suppressed. Further, the outer shim is formed so as to be movable relative to the inner shim in a predetermined direction in the radial direction of the rotor and in the circumferential direction of the rotor when combined as a shim set. As a result, the roles of the inner and outer shims are fully exhibited.

It is sectional drawing which shows the structure of the disc brake device of this embodiment. It is sectional drawing which shows the structure of the cylinder and piston of this embodiment. It is a top view which shows the structure by the side of the opening part of the caliper assembly of this embodiment. It is a front view which shows the structure of the brake pad set of this embodiment. It is a perspective view which shows the structure of the brake pad set of this embodiment. It is the elements on larger scale which expanded the X1 part of FIG. FIG. 7 is a partially enlarged view of a portion X1 in FIG. 5 viewed from an angle different from that in FIG. It is a top view which shows the structure of the brake pad set of this embodiment. It is a bottom view which shows the structure of the brake pad set of this embodiment. It is the elements on larger scale which expanded the X2 part of FIG. It is the elements on larger scale which expanded the X3 part of FIG. It is a right view which shows the structure of the brake pad set of this embodiment. It is a front view which shows the structure of the inner shim of this embodiment. It is a top view which shows the structure of the inner shim of this embodiment. It is a bottom view which shows the structure of the inner shim of this embodiment. It is a right view which shows the structure of the inner shim of this embodiment. It is a front view which shows the structure of the outer shim of this embodiment. It is a top view which shows the structure of the outer shim of this embodiment. It is a bottom view which shows the structure of the outer shim of this embodiment. It is a right view which shows the structure of the outer shim of this embodiment. It is a front view which shows the structure of the shim set of this embodiment. It is a top view which shows the structure of the shim set of this embodiment. It is a bottom view which shows the structure of the shim set of this embodiment. It is a perspective view which shows the structure of the shim set of this embodiment. It is the elements on larger scale which expanded a part of shim set of this embodiment. It is explanatory drawing for demonstrating the test | inspection of this embodiment. It is explanatory drawing which shows the deformation | transformation aspect of the shim set of this embodiment. It is explanatory drawing which shows the deformation | transformation aspect of the shim set of this embodiment.

  Hereinafter, the present embodiment will be described with reference to FIGS. 1 to 28 by taking a piston-facing disc brake device for a vehicle as an example. As shown in FIG. 1, the disc brake device A includes a disc rotor 1 and a caliper assembly 2. The disk rotor 1 is a disk member that is assembled to an axle hub (not shown) and rotates integrally with a wheel. In the description, the radial direction of the disk rotor 1 is referred to as “rotor radial direction”, the circumferential direction of the disk rotor 1 is referred to as “rotor circumferential direction”, and the axial direction of the disk rotor 1 is referred to as “rotor axial direction”. The “piston 3” on the “piston 3 side in the rotor axial direction” means the piston 3 on one side in the description of the one side portion (brake pad set or the like). Each figure used for explanation is a conceptual diagram, and the shape of each part may not necessarily be exact. FIG. 1 is a cross-sectional view of the caliper assembly 2 cut along a plane extending in the rotor axial direction and the rotor radial direction, and is an explanatory diagram in which the cylinders 211 and 221, the piston 3, and the bridge 231 are omitted.

(Caliper assembly)
The caliper assembly 2 is a device that generates a braking force against the rotation of the disk rotor 1. As shown in FIGS. 1 to 3, the caliper assembly 2 includes a caliper 20, six pistons (corresponding to “pressing members”) 3, a pair of brake pads 4, a pair of inner shims 5, and a pair of And an outer shim 6.

  The caliper 20 is a housing part that is mainly fixed to a vehicle support (not shown). The caliper 20 includes an inner housing part 21, an outer housing part 22, a connecting part 23, and a support shaft part 24. First, the support shaft portion 24 is a member that supports the brake pad 4 so as to be movable in the caliper 20 in the rotor axial direction. Although details will be described later, the support shaft portion 24 includes an outer peripheral support shaft 241 and inner peripheral support shafts 242 and 243.

  The inner housing portion 21 and the outer housing portion 22 are disposed to face each other so as to straddle the disc rotor 1. The inner housing portion 21 is disposed on the inner side in the rotor axial direction of the disk rotor 1. As shown in FIGS. 2 and 4, the inner housing portion 21 has three cylinders 211 corresponding to the three pistons 3. The cylinder 211 is provided on each of one end side in the rotor circumferential direction, the central portion in the rotor circumferential direction, and the other end side in the rotor circumferential direction of the inner housing portion 21. The cylinder 211 is arranged so as to be symmetric with respect to an imaginary line Z extending in the rotor radial direction at the center position in the rotor circumferential direction of the brake pad 4. In addition, a support portion 212 that supports one end of the outer peripheral support shaft 241 is formed on the outer side portion of the inner housing portion 21 in the rotor radial direction. A support portion 213 that supports one end of the inner peripheral support shaft 242 is formed on the inner side portion of the inner housing portion 21 in the rotor radial direction.

  The outer housing portion 22 is disposed on the outer side in the rotor axial direction of the disk rotor 1. In the outer housing portion 22, three cylinders 221 are formed corresponding to the three pistons 3. Like the cylinder 211, the cylinder 221 is provided on one end side in the rotor circumferential direction, the central portion in the rotor circumferential direction, and the other end side in the rotor circumferential direction of the outer housing portion 22. The cylinder 221 is formed to face the cylinder 211. Further, a support portion 222 that supports the other end of the outer peripheral support shaft 241 is formed on the outer side portion of the outer housing portion 22 in the rotor radial direction. A support portion 223 that supports one end of the inner peripheral support shaft 243 is formed on the inner side portion of the outer housing portion 22 in the rotor radial direction. The connecting portion 23 is a portion that connects the inner housing portion 21 and the outer housing portion 22. The connecting part 23 is composed of a plurality of bridges 231. The plurality of bridges 231 form openings 23 a that expose the inside of the caliper assembly 2.

  The outer peripheral support shaft 241 is a columnar member having one end supported by the support portion 212 of the inner housing portion 21 and the other end supported by the support portion 222 of the outer housing portion 22. The outer peripheral support shaft 241 is disposed on the outer side of the caliper 20 in the rotor radial direction so that the axial direction is parallel to the rotor axial direction. The outer peripheral support shaft 241 is provided integrally with the inner housing portion 21 and the outer housing portion 22.

  The inner peripheral support shaft 242 is a columnar member whose one end is supported by the support portion 213 of the inner housing portion 21. The inner peripheral support shaft 242 is disposed at the inner side in the rotor radial direction of the caliper 20 so that the axial direction is parallel to the rotor axial direction. The inner peripheral support shaft 242 is provided integrally with the inner housing portion 21. The inner peripheral support shaft 243 is a columnar member whose one end is supported by the support portion 223 of the outer housing portion 22. The inner peripheral support shaft 243 is disposed on the inner side in the rotor radial direction of the caliper 20 so that the axial direction is parallel to the rotor axial direction. The inner peripheral support shaft 243 is provided integrally with the outer housing portion 22. The support shaft portion 24 may be screwed to the support portions 212, 222, 213, and 223.

  The piston 3 is a member for pressing the brake pad 4 toward the disc rotor 1. As shown in FIG. 2, the piston 3 is a bottomed cylindrical member having an opening on the brake pad 4 side and a bottom surface on the bottom surface side of the cylinders 211 and 221. Six pistons 3 are arranged in the caliper 20. As shown in FIG. 4, the three pistons 3 on the inner housing portion 21 side are arranged in the corresponding cylinders 211. The three pistons 3 on the outer housing part 22 side are arranged in the corresponding cylinders 221. The piston 3 is assembled to the cylinders 211 and 221 in a fluid-tight manner and slidable in the rotor axial direction. An oil chamber 3 a is formed between the piston 3 and the cylinders 211 and 221. The piston 3 moves forward in the rotor axial direction by the hydraulic fluid supplied to the oil chamber 3 a during braking and presses the pair of brake pads 4 toward the disc rotor 1. Each oil chamber 3a communicates with an oil passage (not shown). The hydraulic fluid is supplied to the oil chamber 3a by, for example, a master cylinder or an actuator.

(Brake pad)
The pair of brake pads 4 are incorporated in the caliper 20. The pair of brake pads 4 includes a brake pad 4 disposed on the inner housing portion 21 side and a brake pad 4 disposed on the outer housing portion 22 side. The brake pad 4 disposed in the inner housing portion 21 and the brake pad 4 disposed in the outer housing portion 22 have the same configuration, and one brake pad 4 will be described mainly with reference to FIGS. 4 to 12. To do.

  As shown in FIGS. 4 and 5, the brake pad 4 includes a friction material 41 that slides against the disk rotor 1 to generate a friction force, and a back plate 42 that supports the back surface of the friction material 41. I have. The friction material 41 of the present embodiment is formed so that the longitudinal direction is the rotor circumferential direction as a whole. The friction material 41 may be called lining in the market.

  The back plate 42 includes a back plate body 420, a first groove 421, a second groove 422, and a protrusion 423. The back plate main body 420 is a plate-like member in which the friction material 41 is fixed to the first surface 420a on the disk rotor 1 side, and the inner shim 5 is disposed on the second surface 420b on the piston 3 side. One side of the back plate body 420 in the circumferential direction of the rotor is biased toward the inside in the radial direction of the rotor by a leaf spring (not shown).

  The first groove portion 421 is formed outside the back plate 42 in the rotor radial direction. Specifically, the first groove portion 421 is formed at the center portion in the rotor circumferential direction at the outer portion in the rotor axial direction of the back plate main body 420. The first groove 421 is formed in a concave shape (for example, a V shape or a U shape) that is recessed inward in the rotor radial direction so as to be engageable with the outer peripheral support shaft 241. In other words, the first groove portion 421 is a portion that protrudes in a concave shape from the back plate main body portion 420 outward in the rotor radial direction. The first groove portion 421 is spaced apart from at least one side of the outer circumferential support shaft 241 in the circumferential direction of the rotor so that the brake pad 4 can rotate a predetermined amount around the axis of the inner circumferential support shafts 242 and 243. Has been.

  The second groove 422 is formed on the inner side of the back plate 42 in the rotor radial direction. Specifically, the second groove portion 422 is formed at the center portion in the rotor circumferential direction at the inner portion in the rotor axial direction of the back plate main body portion 420. The second groove portion 422 is formed in a concave shape (for example, a V shape or a U shape) that is recessed outward in the rotor radial direction so as to be engageable with the inner peripheral support shafts 242 and 243. The second groove portion 422 is slidably disposed with respect to the inner peripheral support shafts 242 and 243. The brake pad 4 of the present embodiment is assembled to the support shaft portion 24 so as to be rotatable by a predetermined amount (a small amount) around the axis of the inner peripheral support shafts 242 and 243.

  The protrusion 423 is formed on the inner shim 5 side surface of the back plate 42, that is, the second surface 420 b of the back plate main body 420. The protrusion 423 is formed at a position corresponding to the opening 3 b of the piston 3 so that the tip side portion 4 a excluding the root is disposed in the opening 3 b of the piston 3. The protrusion 423 of the present embodiment includes a first protrusion 423a and a second protrusion 423b.

  The first protrusion 423a is a portion corresponding to the piston 3 on one end side in the rotor circumferential direction, and is formed on a portion on one end side in the rotor circumferential direction of the second surface 420b. The first protrusion 423a protrudes in a cylindrical shape from the second surface 420b. The distal end side portion 4 a of the first protrusion 423 a is disposed in the opening 3 b of the piston 3. The 2nd protrusion 423b is a site | part corresponding to the piston 3 of the rotor circumferential direction other end side, Comprising: It forms in the site | part of the rotor circumferential direction other end side of the 2nd surface 420b. The second protrusion 423b protrudes in a cylindrical shape from the second surface 420b. The distal end side portion 4 a of the second protrusion 423 b is disposed in the opening 3 b of the piston 3. The first protrusion 423a and the second protrusion 423b are arranged so as to be symmetrical with respect to an imaginary line Z extending in the rotor radial direction at the center position in the rotor circumferential direction of the back plate 42. The brake pad 4, the inner shim 5, and the outer shim 6 constitute a brake pad set.

(Shim set)
The pair of inner shims 5 includes an inner shim 5 disposed on the inner housing portion 21 side and an inner shim 5 disposed on the outer housing portion 22 side. Since the inner shims 5 on both sides have the same configuration, one configuration will be described. An inner shim 5 and an outer shim 6 are disposed between the brake pad 4 and the piston 3. The inner shim 5 is disposed on the brake pad 4 side between the brake pad 4 and the piston 3. The inner shim 5 is made of a stainless material (SUS material), and a rubber layer made of a rubber material (heat-resistant rubber) is formed on the entire first surface 5a, which is one surface. That is, the first surface 5a of the inner shim 5 is formed of a rubber material, and the other surface (second surface) 5b of the inner shim 5 is formed of a stainless material. Due to the color of the material, the first surface 5a is black and the second surface 5b is white.

  Specifically, as shown in FIGS. 13 to 16, the inner shim 5 includes an inner shim main body 51, a fitting portion 52, an inner shim side first engagement portion 53, and an inner shim side second engagement. Part 54. The inner shim body 51 is a flat plate member whose longitudinal direction is the rotor circumferential direction. The inner shim body 51 is disposed between the brake pad 4 and the outer shim 6 so that the first surface 5a is on the brake pad 4 side and the second surface 5b is on the outer shim 6 side. Inner shim through holes 511 and 512 are formed in the inner shim body 51 at positions corresponding to the first protrusion 423a and the second protrusion 423b. In the present embodiment, the inner shim through holes 511 and 512 are formed at positions symmetrical with respect to a virtual line Z extending in the rotor radial direction at the center position of the inner shim 5 in the rotor circumferential direction. A first protrusion 423 a is inserted into the inner shim through hole 511, and a second protrusion 423 b is inserted into the inner shim through hole 512.

  The fitting portion 52 is a claw-shaped portion provided at two locations (a total of four locations) on the outer side in the rotor radial direction and on the inner side in the rotor radial direction in the outer edge portion of the inner shim main body portion 51. The fitting portion 52 protrudes from the inner shim body 51 to the brake pad 4 side so as to have a tightening margin with respect to the back plate 42 of the brake pad 4. Before assembling, the distance between the protruding end portions of the fitting portions 52 is smaller than the length of the corresponding back plate 42 by the tightening allowance. In the present embodiment, of the four fitting portions 52, the two fitting portions 52 on the inner side in the rotor radial direction are curved outward in the rotor radial direction so as to be elastically deformed when assembled. That is, in the assembled state, the rotor-diameter inner fitting portion 52 presses the back plate 42 outward in the rotor radial direction.

  The two fitting portions 52 on the outer side in the rotor radial direction are in contact with a portion of the back plate main body 420 adjacent to the stepped portion 420z formed with a step in the rotor radial direction. The fitting portion 52 is fitted to the back plate 42, and the inner shim body 51 is assembled to the back plate 42. Thus, the inner shim 5 is assembled by the fitting portion 52 so that it cannot move relative to the brake pad 4 at least in the rotor radial direction and the rotor circumferential direction.

  The inner shim side first engaging portion 53 is a claw-shaped portion provided on the outer side in the rotor radial direction of the outer edge portion of the inner shim main body portion 51. The inner shim side first engaging portion 53 is formed at one place (two places in total) on one side in the rotor circumferential direction and the other side in the rotor circumferential direction of the inner shim body 51. The inner shim side first engagement portion 53 is formed in a rectangular shape. The inner shim side first engaging portion 53 protrudes from the inner shim main body portion 51 toward the brake pad 4 (disk rotor 1) side in the rotor axial direction.

  In the present embodiment, the inner shim side first engagement portion 53 is formed by bending a part of the inner shim 5 toward the brake pad 4 in the rotor axial direction. That is, the inner shim side first engaging portion 53 is disposed on the back plate 42 so that the second surface 5b formed of stainless steel is exposed to the outside in the rotor radial direction. The inner shim-side first engagement portion 53 is disposed so as to abut on the third surface 420c, which is the outer surface of the back plate main body 420 in the rotor radial direction, and to cover a part of the third surface 420c. The width of the inner shim side first engagement portion 53 in the rotor axial direction is set to be equal to or smaller than the width of the third surface 420c in the rotor axial direction. That is, the inner shim side first engagement portion 53 does not protrude from the first surface 420 a of the back plate 42 in a state where the inner shim 5 is fitted to the back plate 42. The inner shim side first engagement portion 53 is engaged with the back plate 42 in the rotor axial direction. The inner shim side first engagement portion 53 corresponds to a “first protrusion”.

  The inner shim side second engaging portion 54 is a claw-shaped portion provided on the inner side in the rotor radial direction in the outer edge portion of the inner shim main body portion 51. The inner shim side second engaging portion 54 is formed at one place (two places in total) on one side in the rotor circumferential direction and the other side in the rotor circumferential direction of the inner shim body 51. The inner shim side second engagement portion 54 is formed in a rectangular shape. The inner shim side second engaging portion 54 protrudes from the inner shim main body portion 51 toward the inner side in the rotor radial direction.

  The pair of outer shims 6 includes an outer shim 6 disposed on the inner housing portion 21 side and an outer shim 6 disposed on the outer housing portion 22 side. Since the outer shims 6 on both sides have the same configuration, only one configuration will be described. The outer shim 6 is disposed on the piston 3 side between the brake pad 4 and the piston 3. That is, the outer shim 6 is disposed between the piston 3 and the inner shim 5. Like the inner shim 5, the outer shim 6 is made of a stainless material (SUS material), and a rubber layer made of a rubber material is formed on the entire second surface 6b, which is one surface. That is, the other surface (first surface) 6a of the outer shim 6 is formed of a stainless material, and the second surface 6b of the outer shim 6 is formed of a rubber material. Due to the color of the material, the first surface 6a is a white color and the second surface 6b is a black color.

  Specifically, as shown in FIGS. 17 to 20, the outer shim 6 includes an outer shim body 61, a first restricting portion (corresponding to a “restricting portion”) 62, and a second restricting portion (“restricting portion”). ) 63, a third restricting portion 64, an outer shim side first engaging portion 65, and an outer shim side second engaging portion 66. The outer shim main body 61 is a flat member having substantially the same shape as the inner shim main body 51 and whose longitudinal direction is the rotor circumferential direction. The outer shim body 61 is disposed between the inner shim 5 and the piston 3 such that the first surface 6a is on the inner shim 5 side and the second surface 6b is on the piston 3 side. The outer shim body 61 is formed with outer shim through holes 611 and 612 at positions corresponding to the first protrusion 423a and the second protrusion 423b. In the present embodiment, the outer shim through holes 611 and 612 are formed at positions symmetrical with respect to the virtual line Z extending in the rotor radial direction at the center position of the outer shim 6 in the rotor circumferential direction. A first protrusion 423 a is inserted into the outer shim through hole 611, and a second protrusion 423 b is inserted into the outer shim through hole 612. The diameters of the outer shim through holes 611 and 612 are larger than the diameters of the inner shim through holes 511 and 512.

  Further, a notch 613 is formed at a position (two locations) corresponding to the fitting portion 52 in a portion of the outer shim main body portion 61 on the inner side in the rotor radial direction. According to this, even when the portion around the fitting portion 52 of the inner shim 5 is lifted by pressing of the fitting portion 52, the notch 613 prevents the inner shim 5 and the outer shim 6 from interfering with each other. That is, by providing the notch 613, inhibition of relative movement of the outer shim 6 with respect to the inner shim 5 is suppressed even when the peripheral portion of the fitting portion 52 is lifted. The notch 613 is formed in a range in which the outer shim 6 can move relative to the inner shim 5 by a predetermined amount even when the peripheral portion of the fitting portion 52 is lifted.

  The first restricting portion 62 is provided on one side of the outer circumferential portion of the outer shim main body 61 in the rotor circumferential direction. The first restricting portion 62 is a rectangular claw-shaped portion and protrudes from the outer shim main body portion 61 toward the brake pad 4 in the rotor axial direction. The first restricting portion 62 is disposed so as to be apart from the one surface (fourth surface) 420d in the circumferential direction of the rotor of the back plate body 420 and to cover a part of the fourth surface 420d.

  The second restricting portion 63 is provided on the other side of the outer circumferential portion of the outer shim body 61 in the rotor circumferential direction. The second restricting portion 63 is a rectangular claw-like portion similar to the first restricting portion 62 and protrudes from the outer shim main body portion 61 toward the brake pad 4 in the rotor axial direction. The second restricting portion 63 is disposed so as to be separated from the other surface (fifth surface) 420e in the rotor circumferential direction of the back plate main body 420 and to cover a part of the fifth surface 420e. The first restricting portion 62 and the second restricting portion 63 restrict the relative movement of the outer shim body 61 with respect to the brake pad 4 in the rotor circumferential direction to a predetermined amount in a state where the outer shim 6 is assembled to the brake pad 4. Yes. In other words, the movable range of the outer shim 6 in the circumferential direction of the rotor is restricted to a predetermined range by the first restricting portion 62 and the second restricting portion 63. The inner surface in the rotor radial direction of the back plate body 420 is a sixth surface 420f.

  The third restricting portion 64 is provided on the outer side of the outer shim body 61 on the outer side in the rotor radial direction. The third restricting portions 64 are provided at positions (two locations) corresponding to both sides of the first groove portion 421 in the outer shim main body portion 61. The third restricting portion 64 is a rectangular claw-like portion, and protrudes from the outer shim main body portion 61 toward the brake pad 4 in the rotor axial direction. The third restricting portion 64 abuts against the third surface 420 c of the back plate main body 420 by the weight of the outer shim 6 in a state where the outer shim 6 is assembled to the brake pad 4. The third restricting portion 64 is engaged with the brake pad 4 at least in the rotor radial direction. In the present embodiment, the two third restricting portions 64 are inclined in a C shape when viewed from the front, and both sides of the first groove portion 421 are also inclined in a C shape.

  The outer shim side first engaging portion 65 is a claw-shaped portion provided on the outer side in the rotor radial direction of the outer edge portion of the outer shim main body portion 61. The outer shim side first engaging portion 65 is formed at one place (two places in total) on one side in the rotor circumferential direction and the other side in the rotor circumferential direction of the outer shim main body 61. The outer shim side first engaging portion 65 protrudes from the outer shim main body portion 61 toward the brake pad 4 in the rotor axial direction. The outer shim side first engaging portion 65 is formed at a position corresponding to the inner shim side first engaging portion 53 and is disposed on the inner shim side first engaging portion 53. In other words, the outer shim side first engaging portion 65 overlaps the inner shim side first engaging portion 53 on the side covering the inner shim side first engaging portion 53.

  As shown in FIG. 20, the outer shim side first engaging portion 65 extends to a position facing the first surface 420 a of the back plate 42. That is, the outer shim side first engagement portion 65 is formed so that the outer shim 6 engages with the back plate 42 in the rotor axial direction so as to wind the back plate 42. In other words, a part of the outer shim side first engaging portion 65 is disposed on the disk rotor 1 side of the inner shim side first engaging portion 53. Further, the outer shim side first engaging portion 65 is formed so as to cover a part of the inner shim side first engaging portion 53. Specifically, the outer shim side first engagement portion 65 includes a first portion 651 protruding from the outer shim main body portion 61 in the rotor axial direction, and a second portion protruding from the tip of the first portion 651 to the inner side in the rotor radial direction. 652. The first portion 651 is disposed on the outer side in the rotor radial direction of the inner shim side first engagement portion 53.

  A notch 651a is formed at the tip portion of the first portion 651 (the portion on the brake pad 4 side in the rotor axial direction). The first portion 651 of the present embodiment is formed in an L shape by a notch 651a provided on one side of the tip portion in the circumferential direction of the rotor. That is, the width in the rotor circumferential direction at the root portion (the piston 3 side in the rotor axial direction) of the first portion 651 is larger than the width in the rotor circumferential direction at the tip portion. The second portion 652 is disposed to face the first surface 420 a of the back plate 42.

  Here, the width in the rotor circumferential direction at the root portion of the first portion 651 is substantially the same as the width in the rotor circumferential direction of the inner shim side first engagement portion 53. Therefore, when the outer shim side first engagement portion 65 and the inner shim side first engagement portion 53 overlap without being displaced in the rotor circumferential direction, a part of the inner shim side first engagement portion 53 is formed by the notch 651a. Are exposed to the outside in the rotor radial direction. The outer shim side first engaging portion 65 is formed by bending a part of the outer shim 6, and the outer side in the rotor radial direction of the first portion 651 is a second surface 6b formed of a rubber material. That is, when the outer shim 6 is assembled to the inner shim 5 and the operator views the outer shim 6 and the inner shim 5 from the outer side in the rotor radial direction, The white shim-side first engagement portion 53 exposed by the notch 651a can be seen. The outer surface (second surface 5b) of the inner shim side first engagement portion 53 in the rotor radial direction constitutes a first inspection surface 53b. The outer surface in the rotor radial direction (second surface 6b) of the first portion 651 of the outer shim side first engaging portion 65 constitutes a second inspection surface 65b. The color of the first inspection surface 53b is different from the color of the second inspection surface 65b. The outer shim side first engagement portion 53 also corresponds to a “second protrusion”.

  The outer shim side second engaging portion 66 is a claw-like member provided on the inner side in the rotor radial direction of the outer edge portion of the outer shim main body portion 61. The outer shim side second engagement portion 66 is formed at one place (two places in total) on one side in the rotor circumferential direction and the other side in the rotor circumferential direction of the outer shim main body 61. The outer shim side second engaging portion 66 protrudes from the outer shim main body portion 61 toward the brake pad 4 side in the rotor axial direction. The outer shim side second engaging portion 66 is formed at a position corresponding to the inner shim side second engaging portion 54. A part of the outer shim side second engaging portion 66 is disposed on the disk rotor 1 side of the inner shim side second engaging portion 54.

  Specifically, the outer shim side second engaging portion 66 includes a first portion 661 protruding inward in the rotor radial direction and a second portion protruding from the tip portion of the first portion 661 toward the brake pad 4 in the rotor axial direction. 662 and a third portion 663 that protrudes from the tip portion (or one end portion in the rotor circumferential direction) of the second portion 662 to one side in the rotor circumferential direction. The first part 661, the second part 662, and the third part 663 are each formed in a rectangular shape. The second portion 662 is separated from the inner shim side second engaging portion 54 and extends to the brake pad 4 side in the rotor axial direction from the inner shim side second engaging portion 54. The third portion 663 is formed so that a part thereof is disposed on the disk rotor 1 side of the inner shim side second engagement portion 54. That is, a part of the third portion 663 overlaps the inner shim side second engagement portion 54 in the rotor axial direction.

  Here, the shim sets (inner shim 5 and outer shim 6) will be further described with reference to FIGS. The inner shim side first engaging portion 53 and the outer shim side first engaging portion 65, and the inner shim side second engaging portion 54 and the outer shim side second engaging portion 66 are shifted from each other in the rotor circumferential direction. Thus, the inner shim main body 51 and the outer shim main body 61 are overlapped and are slid relatively in the rotor circumferential direction, thereby engaging in the rotor axial direction. FIG. 21 shows a sliding direction when the outer shim 6 is slid. In the engaged state, the outer shim 6 is movable relative to the inner shim 5 by a predetermined amount in the rotor circumferential direction and the rotor radial direction. That is, the outer shim 6 is engaged with the inner shim 5 in the rotor axial direction so as to be rotatable by a predetermined amount. A shim set is formed by sliding the first engagement portions 53 and 65 and the second engagement portions 54 and 66 in the rotor circumferential direction to engage in the rotor axial direction. The shim set includes an inner shim 5 and an outer shim 6.

  The inner shim 5 and the outer shim 6 are arranged so that the second surface 5b and the first surface 6a face each other. The friction coefficient between the inner shim 5 and the outer shim 6 when the brake is actuated (when the piston 3 is driven) is relatively small because the stainless steel materials come into contact with each other. On the other hand, the friction coefficient between the inner shim 5 and the back plate 42 when the brake is operated is such that the first surface 5a formed of the rubber material of the inner shim 5 contacts the back plate 42. Greater than 6 coefficient of friction. Similarly, the friction coefficient between the outer shim 6 and the piston 3 at the time of braking is also the same as that of the inner shim 5 and the outer shim because the second surface 6b formed of the rubber material of the outer shim 6 contacts the piston 3. Greater than 6 coefficient of friction. In addition, grease is inserted between the inner shim 5 and the back plate 42 of the present embodiment.

  As described above, the inner shim 5 is assembled to the back plate 42 so as to be integrally movable in the rotor radial direction and the rotor circumferential direction. Further, the outer shim 6 can move relative to the back plate 42 by a predetermined amount in the rotor radial direction and the rotor circumferential direction, and can move slightly in the rotor axial direction, and the shafts of the inner peripheral support shafts 242 and 243. It is assembled so that it can rotate a predetermined amount around the center.

(Brake operation)
Here, the operation at the time of brake braking (during braking) in the disc brake device of the present embodiment will be described. When hydraulic fluid is supplied to each oil chamber 3a as a brake pedal (not shown) is depressed, each piston 3 is driven toward the disk rotor 1 by the hydraulic pressure, and both brake pads 4 are connected to the disk rotor. Pressed toward 1. Thereby, the friction material 41 is slidably pressed against the disk rotor 1 and the disk rotor 1 is braked. When the depression of the brake pedal is released, the hydraulic fluid is discharged from each oil chamber 3a, and the braking of the disc rotor 1 is released.

  When the brake is operated, the brake pad 4 rotates about the axis of the inner peripheral support shafts 242 and 243, and the inner peripheral surface (torque receiving surface) on one side in the rotor circumferential direction of the first groove portion 421 is the outer peripheral support shaft 241. It will be in the state contact | abutted. Torque at the time of braking is received by the engaging portion between the first groove portion 421 and the outer peripheral support shaft 241 and the engaging portion between the second groove portion 422 and the inner peripheral support shafts 242 and 243. As a result, the behavior of the brake pad 4 is stabilized as compared with a configuration in which torque during braking is received on an unstable plane. For this reason, generation | occurrence | production of the brake squeal accompanying the unstable behavior at the time of braking is suppressed.

  In the present embodiment, the outer shim 6 is assembled to the brake pad 4 so as to be rotatable by a predetermined amount around the axis of the inner peripheral support shafts 242 and 243. Therefore, when the brake pad 4 rotates (tilts) around the axis of the inner peripheral support shafts 242 and 243 during braking, the tilting of the brake pad 4 is suppressed from being inhibited by the outer shim 6. That is, in the initial stage of braking, the brake pad 4 can be quickly tilted to quickly shift to a state where torque can be received. The brake squeal suppressing function by the relative movement between the inner shim 5 and the outer shim 6 is effectively exhibited. Moreover, the damping effect by the inner shim 5 and the outer shim 6 is also exhibited.

(Effects of shim set)
In the present embodiment, as described above, the shim set is configured by the inner shim 5 and the outer shim 6. The shim set is formed by combining (superimposing) the inner shim 5 and the outer shim 6. A procedure for combining shim sets of this embodiment will be described. First, the operator overlaps the inner shim body 51 and the outer shim body 61 by shifting the positions of the first engaging portions 53 and 65 and the second engaging portions 54 and 66 in the rotor circumferential direction. . Then, the operator can make the outer shim side first engaging portion 65 overlap the inner shim side first engaging portion 53 and the third portion 663 of the outer shim side second engaging portion 66 is on the inner shim side. At least one of the inner shim 5 and the outer shim 6 is slid in the rotor circumferential direction so as to be arranged on the first surface 5a side of the second engaging portion 54. The combined shim set includes an inner shim side first engagement portion 53 and an outer shim side first engagement portion 65, and an inner shim side second engagement portion 54 and an outer shim side second engagement portion 66. Engage in a direction (rotor axial direction) perpendicular to the first surface 5a, 6a and the second surface 5b, 6b, and the outer shim 6 is detached from the inner shim 5 and the inner shim 5 is detached from the outer shim 6 during operation. It is suppressed.

  This combination process of shim sets is one process in the assembly process of the caliper assembly 2, and the shim set is formed into one subassembly (unit) in the process. The shim set is assembled to the brake pad 4 in a later process. According to the present embodiment, since the inner shim 5 and the outer shim 6 are engaged in the direction (rotor axial direction) perpendicular to the inner shim body 51 and the outer shim body 61, the sub-assembly functions and is in operation. In addition, it is possible to realize a shim set in which one of the shims is difficult to drop off. Thereby, the assembly workability of the worker is improved.

  Further, the inner shim 5 and the outer shim 6 can be moved relative to each other by a predetermined amount in the circumferential direction of the rotor and the radial direction of the rotor in a shim set in which the shims are engaged with each other. Accordingly, since the outer shim 6 can be rotated with respect to the inner shim 5 (brake pad 4), the shim set of the present embodiment is applied to a disc brake device in which the brake pad 4 is assembled to the support shaft portion 24. As a result, the above-described effects (such as being able to quickly form a torque receiving state) are exhibited, which is particularly effective.

  Further, in the present embodiment, as the shim set engaging structure in the rotor axial direction, a part of the outer shim side first engaging portion 65 is disposed on the disk rotor 1 side of the inner shim side first engaging portion 53, A part of the outer shim side second engagement portion 66 is configured to be disposed on the disk rotor 1 side of the inner shim side second engagement portion 54. Thereby, the complexity of the structure of the shim set is suppressed, and the manufacture of the shim set is facilitated.

  When the caliper assembly 2 is placed on a work desk or the like, the caliper assembly 2 is usually placed so that the outer side in the rotor radial direction is upward. Here, in the shim set of the present embodiment, a wrapping-type outer shim side first engagement portion 65 formed to wind the inner shim 5 and the back plate 42 is formed on the outer side in the rotor radial direction. Accordingly, even when the self-weight of the outer shim 6 is applied to the outer shim-side first engagement portion 65 in the above-described placement state, a stable engagement state is maintained by the winding-type outer shim-side first engagement portion 65. It becomes possible. In addition, in the shim set shortage inspection described later, this configuration is advantageous from the viewpoint of securing the area of the inspection surface on the outer side in the rotor radial direction (that is, on the opening 23a side).

  Further, when the caliper assembly 2 is viewed from the vehicle outer side in the rotor axial direction, it is not preferable as a design if the brake pad 4 is visible from the inner side of the caliper assembly 2 in the rotor radial direction. Here, on the inner side in the rotor radial direction of the shim set according to the present embodiment, the slide type outer shim side second engagement that does not involve the outer shim 6 to the first surface 420a side of the back plate 42 is used instead of the above-described winding type. A joint portion 66 is formed on the inner side in the rotor radial direction. Thereby, even when the friction material 41 is disposed up to the inner end of the back plate 42 in the rotor radial direction, it is not necessary to provide a region for catching the back plate 42, and the back plate 42 is increased in size and weight. The inhibition of design can be suppressed.

(Inspect caliper assembly)
Here, the process of inspecting the shim set of the completed caliper assembly 2 will be described. As shown in FIG. 3, the worker or the sensor can visually or detect the inside of the caliper assembly 2 through the opening 23 a. In particular, in the present embodiment, it is possible to inspect the assembly of the shim set disposed in the caliper assembly 2 through the opening 23a. Specifically, when the shim set includes the inner shim 5 and the outer shim 6 (that is, in a normal case), a part of the inner shim side first engaging portion 53 disposed at a position corresponding to the opening 23a The outer shim side first engagement portion 65 can be visually recognized or detected.

  In this embodiment, the inner shim side first engaging portion 53 and the outer shim side first engaging portion 65 overlap with each other in the shim set engaged in the rotor axial direction, and the outer shim side first engaging portion is overlapped. A part of the inner shim side first engagement portion 53 is exposed from the notch 651a and / or one end side (opposite side of the notch 651a) of the portion 65. That is, in the normal state, the second surface 6b (second inspection surface 65b) of the outer shim side first engagement portion 65 that is a black color is exposed from the opening 23a, and the inner shim side first color that is a white color is exposed. The second surface 5b (first inspection surface 53b) of the one engaging portion 53 is exposed. On the other hand, when the inner shim 5 or the outer shim 6 is missing, only one of the black color and the white color is exposed from the opening 23a.

  According to this configuration, the first inspection in the opening 23a is performed from the outer side in the rotor radial direction of the caliper assembly 2 by using an identification unit (not shown) capable of distinguishing colors and / or brightness such as an image sensor or a camera. A predetermined range corresponding to the surface 53b and the second inspection surface 65b can be sensed. According to this, it is possible to detect whether or not there is a missing item in the shim set based on, for example, the ratio of colors in a predetermined range. In the inspection process, for example, the caliper assembly 2 having the opening 23a above the camera or the image sensor may be carried by a line or the like. The camera or the image sensor can recognize the difference in color by detecting (imaging) the set predetermined range, and can determine whether the product is normal or missing based on the recognized color. The determination is not limited to the camera or the image sensor, but may be made by a computer connected to them. Further, the determination can be performed based on the color or brightness within a predetermined range. The presence / absence of a missing shim set can be determined, for example, based on whether or not a black color detection value and a white color detection value are greater than or equal to a threshold value within a predetermined range. As described above, according to the caliper assembly 2, it is possible to easily inspect the shortage by using a camera or the like, and it is possible to suppress forgetting to attach the inner shim 5 and the outer shim 6. The colors of the first inspection surface 53b and the second inspection surface 65b may be different from each other so that they can be distinguished from each other, and are not limited to the above colors.

  Further, according to the present embodiment, by providing the notch 651a, the width (in the circumferential direction of the rotor) of the root portion of the outer shim side first engaging portion 65 (the bent portion with the outer shim main body portion 61) is provided. Length) is ensured, and the strength of the outer shim side first engagement portion 65 can be ensured without increasing the size and weight. In the present embodiment, the width of the base portion of the outer shim side first engaging portion 65 is designed to be the same as the width of the inner shim side first engaging portion 53, and The strength can be maintained at the same level as the strength of the inner shim side first engagement portion 53. As described above, according to the present embodiment, the notch 651a allows the outer shim side first engagement portion 65 to have a configuration capable of maintaining the strength, reducing the weight, and enabling the missing item inspection. In addition, by providing the notch 651a, for example, as shown in FIG. 26 (region having a smaller two-dot chain line), a predetermined range (identification target range) of the camera or the like can be limited to a small size, thereby improving inspection accuracy. Is possible. In addition, as shown in FIG. 26 (region with a larger two-dot chain line), a predetermined range of the camera or the like can be enlarged according to the structure of the opening 23a, and the shift of the inspection position, the shift of the shims, etc. Large tolerance is also possible.

  Further, in this embodiment, since one surface of the inner shim 5 is formed of a stainless steel material and one surface of the outer shim 6 is formed of a rubber material, it can be inspected using a configuration capable of realizing an appropriate friction coefficient. Therefore, it is possible to create a difference in color, and the manufacturing complexity is suppressed. According to this embodiment, it is not necessary to color the first inspection surface 53b of the inner shim 5 and the second inspection surface 65b of the outer shim 6 only for inspection.

  Further, in the present embodiment, since both the first engaging portions 53 and 65 for suppressing the shim set from falling off are used as the inspection surface and the shortage is inspected, it is not necessary to separately form a part for inspection. That is, according to this embodiment, since both the first engaging portions 53 and 65 also function as inspection surfaces (that is, also serve as inspection surfaces), manufacturing is facilitated and weight is suppressed. In the shim set of the present embodiment, the inner shim 5 is provided with a first protrusion (claw-like part), and the outer shim 6 is provided with a second protrusion (a claw-like part) having a different color from the first protrusion. In a normal case, the structure may be such that both protrusions are exposed from the opening 23a. This also enables a shortage inspection. In the present embodiment, the inner shim side first engaging portion 53 constitutes a first protruding portion, and the outer shim side first engaging portion 65 constitutes a second protruding portion.

  Moreover, the notch 651a should just be formed in parts other than the base part (end part by the side of the outer shim main-body part 61) of the outer shim side 1st engaging part 65, and a shape etc. are not restricted above. For example, as shown in FIG. 27, the notch 651a may have an inclined shape (triangular shape). Further, as a configuration that can be inspected, the notch 651a may not be provided, and an opening 651b may be provided in the first portion 651 of the outer shim side first engaging portion 65 as shown in FIG. Further, the width of the inner shim side first engagement portion 53 in the circumferential direction of the rotor can be identified by a camera or the like by making it larger than the width of the outer shim side first engagement portion 65 in the circumferential direction of the rotor. However, from the viewpoint of weight and ease of assembly to the brake pad 4, the configuration in which the notch 651a is provided as in the present embodiment is more advantageous. Further, the opening 23 a is not limited to the one formed by the bridge 231, and a corresponding part of the caliper assembly 2 on the outer side in the rotor radial direction may be opened. However, by forming the opening 23a using the bridge 231 as in the present embodiment, it is possible to realize a configuration that can be inspected while enhancing the rigidity of the caliper assembly 2.

(Brake pad set effect)
The brake pad 4 of the present embodiment has a protrusion 423 (first protrusion 423a and second protrusion 423b). For this reason, even if the part (claw-like part) for fitting and engaging which the inner shim 5 and the outer shim 6 have is damaged, the inner shim 5 and / or the outer shim 6 which are likely to fall off from the brake pad 4 are removed. It catches on the protrusion 423 and its dropout is suppressed. The outer shim through holes 611 and 612 are formed so that the protrusion 423 and the outer shim body 61 do not come into contact with each other within the movable range of the outer shim 5 with respect to the brake pad 4. Therefore, the protrusion 423 does not hinder the rotational behavior of the outer shim 6 during braking. Thus, according to the brake pad set of the present embodiment, the falling off of the inner shim 5 and the outer shim 6 is suppressed without inhibiting the rotational behavior of the outer shim 6.

  The brake pad set of the present embodiment can cope with the rotational behavior of the outer shim 6 relative to the brake pad 4 and is particularly effective for the disc brake device A in which the brake pad 4 is supported by the support shaft portion 24. Further, since the protrusion 423 is disposed in the opening 3b of the piston 3, it is not necessary to change the structure on the caliper 20 side in the realization of this configuration, and it is necessary to increase the width of the caliper 20 in the rotor axial direction. Nor. That is, complication of the structure of the caliper 20 or the like is suppressed.

  In the present embodiment, the protrusions 423 are composed of two protrusions (first protrusion 423a and second protrusion 423b) arranged symmetrically with respect to the virtual line Z, so that the shims 5 and 6 are dropped off. At the time of prevention, the shims 5 and 6 are stably and well-balanced and are caught on the protrusions 423, and can be more reliably suppressed. In addition, since the first protrusion 423a and the second protrusion 423b and the inner shim through holes 511 and 512 are arranged in line symmetry, when the grease is disposed between the back plate 42 and the inner shim 5, The operator only needs to work symmetrically, and the complexity of the work is suppressed. The grease must be arranged so as not to leak from the inner shim through holes 511 and 512, but in this embodiment, it is sufficient to perform the same operation on one side and the other side in the circumferential direction of the rotor, and the operation is easy and Become efficient.

  In the present embodiment, the opening areas of the outer shim through holes 611 and 612 are larger than the opening areas of the inner shim through holes 511 and 512. Thereby, the inner shim through-holes 511 and 512 can be visually observed from the piston 3 side in the rotor axial direction (the second surface 6b side of the outer shim 6). Therefore, the operator can check whether or not grease has leaked from the inner shim through holes 511 and 512. In order to keep a small coefficient of friction between the inner shim 5 and the outer shim 6, it is preferable that grease does not enter. According to the present embodiment, grease leakage or the like can be confirmed. Also, with this configuration, mud and sand are easily discharged from the outer shim through holes 611 and 612, and mud and sand are prevented from being deposited between the outer shim 6 and the inner shim 5.

  The inner shim through holes 511 and 512 may be formed to have a minimum diameter through which the protrusions 423a and 423b can be inserted. Thereby, the leakage of grease can be further suppressed. Further, the protrusion 423 may be configured by one protrusion. This also can prevent the shims 5 and 6 from falling off. Moreover, the protrusion part 423 may be comprised by several protrusion like this embodiment, and may be comprised so that one protrusion may respond | correspond to each piston 3. As shown in FIG.

(Other)
In the shim set of the present embodiment, when the operator tries to reversely combine the shims 5 and 6, that is, the second surface 6 b of the outer shim 6 is arranged on the first surface 5 a side of the inner shim 5. When trying to combine, it is comprised so that at least one nail | claw-shaped site | part may interfere with the other and may not be combined. Specifically, when the shims 5 and 6 are to be combined in reverse, the inner shim side first engaging portion 53 is disposed on the side covering the outer shim side first engaging portion 65. Accordingly, the fitting portion 52 on the inner side of the inner shim 5 in the radial direction of the rotor moves to the outer side in the radial direction of the rotor more than normal, and abuts and interferes with the peripheral portion of the notch 613 of the outer shim body 61 (see FIG. (Refer to the area around X0 of 4). Thus, when the shims are to be combined in reverse, the two are not combined. The fitting portion 52 and the outer shim main body portion 61 of the present embodiment are formed in a dimensional relationship so that they interfere with each other when combined in the rotor radial direction inner side. Further, even if the two are combined in reverse by shifting or the like, the inner shim 5 and the outer shim 6 do not engage in the rotor axial direction, and the structure is easy to disassemble / drop off. In the reverse state, the distance between the fitting portion 52 and the brake pad 4 increases, and the fitting cannot be performed well. As described above, the shim set of the present embodiment can suppress the occurrence of an error in which the inner shim 5 and the outer shim 6 are reversely combined. Further, the arrangement and structure of the engaging portions 53, 54, 65, and 66 are not limited to the above, and may be, for example, opposite arrangements in and out of the rotor radial direction, or all have the same structure (for example, engagement) Part 53, 65).

(Summary 1)
This embodiment can be described as follows. The shim set of the present embodiment is a shim set that is assembled to the brake pad 4 that is pressed toward the disc rotor 1 by the pressing member 3, and is disposed on the brake pad 4 side between the brake pad 4 and the pressing member 3. A shim 5 and an outer shim 6 disposed on the pressing member 3 side between the brake pad 4 and the pressing member 3 so as to overlap the inner shim 5, and the radial direction of the disk rotor 1 is referred to as the rotor radial direction. When the circumferential direction of the rotor 1 is referred to as the rotor circumferential direction and the axial direction of the disk rotor 1 is referred to as the rotor axial direction, the inner shim 5 is formed on the inner shim main body 51 and the inner shim main body 51 and is formed on the brake pad 4. A fitting portion 52 that fits the brake pad 4 with a tightening margin, and an inner shim side first engagement portion provided on the outer side in the rotor radial direction of the outer edge portion of the inner shim main body portion 51. 3 and an inner shim side second engaging portion 54 provided on the inner side in the rotor radial direction among the outer edge portions of the inner shim main body 51, and the outer shim 6 includes an outer shim main body 61, an outer shim The restricting portions 62 and 63 for restricting the relative movement of the main body portion 61 with respect to the brake pad 4 in the rotor circumferential direction to a predetermined amount, and the outer shim side first provided on the outer side in the rotor radial direction of the outer edge portion of the outer shim main body portion 61. And an outer shim side second engaging portion 66 provided on the inner side in the rotor radial direction of the outer edge portion of the outer shim main body portion 61. The inner shim side first engaging portion 53 and the outer The shim-side first engaging portion 65, the inner shim-side second engaging portion 54, and the outer shim-side second engaging portion 66 overlap the inner shim body 51 and the outer shim body 61 in the circumferential direction of the rotor. The outer shim 6 moves relative to the inner shim 5 by a predetermined amount in the rotor circumferential direction and the rotor radial direction. Capable to engage the rotor axis.
In this shim set, a part of the outer shim side first engaging part 65 is disposed on the disk rotor 1 side of the inner shim side first engaging part 53, and a part of the outer shim side second engaging part 66 is The inner shim side second engagement portion 54 is disposed on the disk rotor 1 side.
In this shim set, the inner shim side first engaging portion 53 protrudes from the inner shim main body portion 51 toward the brake pad 4 side in the rotor axial direction, and the outer shim side first engaging portion 65 is connected to the outer shim main body portion 61. Projecting to the brake pad 4 side in the rotor axial direction, overlapped with the inner shim side first engagement portion 53 on the side covering the inner shim side first engagement portion 53, and on the disc rotor 1 side of the back plate 42 of the brake pad 4. It extends to a position facing the surface 420a.
Further, in this shim set, the inner shim side second engaging portion 54 protrudes inward in the rotor radial direction from the inner shim main body portion 51, and the outer shim side second engaging portion 66 extends from the outer shim main body portion 61 in the rotor axial direction. Projecting to the brake pad 4 side, and a part thereof is disposed on the disk rotor 1 side of the inner shim side second engagement portion 54.
Further, the caliper assembly 2 of the present embodiment includes a pair of shim sets 5 and 6, a pair of brake pads 4, a caliper 20 disposed so as to straddle a part of the outer peripheral portion of the disk rotor 1, and the caliper 20. A support shaft portion 24 that supports the brake pad 4 so as to be movable in the axial direction of the rotor, and a pressing member 3 assembled to the caliper 20. The brake pad 4 is slidably contacted with the disk rotor 1 to generate a frictional force. A first frictional member 41 for generating and a back plate 42 for supporting the back surface of the friction material 41; a first groove portion 421 is formed on the outer side of the back plate 42 in the rotor radial direction; A second groove portion 422 is formed on the inner side in the direction, and the support shaft portion 24 is provided in the caliper 20 and is engaged with the first groove portion 421, and the second groove portion 42 is provided in the caliper 20. The inner peripheral support shafts 242 and 243 are engaged with each other, the friction coefficient between the pressing member 3 and the outer shim 6 is set to be larger than the friction coefficient between the outer shim 6 and the inner shim 5, and the shim set is The brake pad 4 is assembled to the support shaft portion 24 so as to be rotatable by a predetermined amount around the axis of the inner peripheral support shafts 242 and 243.

(Summary 2)
Further, the caliper assembly 2 of the present embodiment includes a caliper 20 disposed so as to straddle a part of the outer peripheral portion of the disk rotor 1, a pair of brake pads 4 incorporated into the caliper 20, and the brake pad 4 to the disk rotor 1. The inner shim 5 disposed on the brake pad 4 side between the brake pad 4 and the pressing member 3, and the inner shim 5 on the pressing member 3 side between the brake pad 4 and the pressing member 3. The caliper assembly includes an outer shim 6 disposed so as to overlap the outer shim 6, and an opening 23 a that exposes the inside is formed at a portion of the caliper 20 on the outer side in the rotor radial direction, and the inner shim 5 is an inner shim body. The inner shim is formed so as to cover a part of the end surface 420c that is formed at a position corresponding to the portion 51 and the opening 23a and that is on the outer side in the rotor radial direction of the brake pad 4. The outer shim 6 is formed at a position corresponding to the outer shim main body 61 and the opening 23a and has a first protruding portion 53 protruding from the body portion 51. The first inspection surface is a surface on the outer side in the rotor radial direction of the first projecting portion 53, having a second projecting portion (65) projecting from the outer shim body 61 so as to cover a part of the first projecting portion 53. The color of 53b is different from the color of the second inspection surface 65b which is the outer surface of the second protrusion 65 in the rotor radial direction.
In the caliper assembly 2, the opening 23 a is partitioned by a plurality of bridges 231 formed outside the caliper 20 in the rotor radial direction. Further, a notch 651a is formed at a portion excluding the end portion of the second protrusion 65 on the outer shim body 61 side. Further, one surface 5b of the inner shim 5 including the first inspection surface 53b is formed of a stainless material, and one surface 6b of the outer shim 6 including the second inspection surface 65b is formed of a rubber material.
Further, in the caliper assembly 2, the inner shim side first engaging portion 53 and the outer shim side first engaging portion 65, and the inner shim side second engaging portion 54 and the outer shim side second engaging portion 66 are: By overlapping the inner shim 5 and the outer shim 6 and sliding them relatively in the circumferential direction of the rotor, the outer shim 6 can move relative to the inner shim 5 in the circumferential direction of the rotor and in the radial direction of the rotor. The inner shim side first engaging portion 53 constitutes the first projecting portion, and the outer shim side first engaging portion 65 constitutes the second projecting portion.

(Summary 3)
The brake pad set of this embodiment includes a brake pad 4 that is pressed toward the disc rotor 1 by a cylindrical piston 3, and an inner shim 5 that is disposed on the brake pad 4 side between the brake pad 4 and the piston 3. An outer shim 6 disposed on the side of the piston 3 between the brake pad 4 and the piston 3 so as to overlap the inner shim 5, and the outer edge portion of the inner shim 5 has an allowance for the brake pad 4. Thus, a fitting portion 52 to be fitted to the brake pad 4 is formed, and the outer edge portion of the outer shim 6 can move relative to the inner shim 5 in the rotor radial direction and the rotor circumferential direction within a predetermined movable range. Thus, a plurality of engaging portions that engage with at least one of the inner shim 5 and the brake pad 4 are formed, and the brake pad 4 slides against the disc rotor 1 to generate a frictional force. It has a friction material 41 and a back plate 42 that supports the back surface of the friction material 41, and a tip side portion 4 a is disposed in the opening 3 b of the piston 3 on the inner surface 5 b of the back plate 42. Thus, a protrusion 423 is formed at a position corresponding to the opening 3 b of the piston 3, inner shim through holes 511 and 512 through which the protrusion 243 is inserted are formed in the inner shim 5, and the outer shim 6 is Outer shim through-holes 611 and 612 through which the protruding portion 423 is inserted are formed, and the outer shim through-holes 611 and 612 are formed so that the outer shim 6 and the protruding portion 423 do not come into contact with each other in the movable range.
The protrusion 423 includes a first protrusion 423a and a second protrusion 423b. The first protrusion 423a and the second protrusion 423b correspond to the different openings 3b of the piston 3, and are located at the center position in the rotor circumferential direction of the back plate 42. They are arranged symmetrically with respect to an imaginary line Z extending in the rotor radial direction. Further, the opening areas of the outer shim through holes 611 and 612 are larger than the opening areas of the inner shim through holes 511 and 512.

1: Disc rotor, 2: Caliper assembly, 20: Caliper,
23a: opening, 3: piston (pressing member), 3b: opening, 4: brake pad,
41: friction material, 42: back plate, 420: back plate body, 421: first groove,
422: second groove, 423: protrusion, 423a: first protrusion, 423b: second protrusion,
420a: first surface, 420b: second surface, 430c: third surface, 430d: fourth surface,
430e: Fifth surface, 4a: tip side portion, 5: inner shim, 51: inner shim body,
52: fitting part, 53: inner shim side first engaging part,
54: Inner shim side second engaging portion, 5a: First surface, 5b: Second surface, 53b: First inspection surface,
511, 512: inner shim through hole, 6: outer shim, 61: outer shim body,
62: 1st regulation part (regulation part), 63: 2nd regulation part (regulation part), 64: 3rd regulation part,
65: outer shim side first engaging portion, 66: outer shim side second engaging portion, 6a: first surface,
6b: second surface, 65b: second inspection surface, 611, 612: outer shim through hole,
A: Disc brake device, Z: Virtual line

Claims (5)

A shim set assembled to a brake pad pressed against a disc rotor by a pressing member,
An inner shim disposed on the brake pad side between the brake pad and the pressing member;
An outer shim disposed on the side of the pressing member between the brake pad and the pressing member and overlapping the inner shim;
With
The radial direction of the disk rotor is referred to as the rotor radial direction, the circumferential direction of the disk rotor is referred to as the rotor circumferential direction, and the axial direction of the disk rotor is referred to as the rotor axial direction.
The inner shim includes an inner shim body portion, a fitting portion formed on the inner shim body portion and having a tightening margin with respect to the brake pad, and fitted to the brake pad, and an outer edge of the inner shim body portion An inner shim side first engagement portion provided on the outer side in the rotor radial direction of the inner portion, and an inner shim side second engagement portion provided on the inner side in the rotor radial direction of the outer edge portion of the inner shim main body portion. Have
The outer shim includes an outer shim main body, a restricting portion for restricting relative movement of the outer shim main body in the circumferential direction of the rotor with respect to the brake pad to a predetermined amount, and a rotor radial direction among outer edges of the outer shim main body. An outer shim side first engagement portion provided on the outer side, and an outer shim side second engagement portion provided on the inner side in the rotor radial direction of the outer edge portion of the outer shim body portion,
The inner shim side first engaging part and the outer shim side first engaging part, and the inner shim side second engaging part and the outer shim side second engaging part are formed by the inner shim body part and the outer shim part. The outer shims are engaged with each other in the axial direction of the rotor so that the outer shims can move relative to the inner shim by a predetermined amount in the circumferential direction and the radial direction of the rotor by overlapping the shim main body and sliding it relatively in the circumferential direction of the rotor. Sim set. In a state where the inner shim and the outer shim are engaged at least in the rotor axial direction,
A portion of the outer shim side first engaging portion is disposed on the disk rotor side of the inner shim side first engaging portion,
The shim set according to claim 1, wherein a part of the outer shim side second engagement portion is disposed on the disk rotor side of the inner shim side second engagement portion. In a state where the inner shim and the outer shim are engaged at least in the rotor axial direction,
The inner shim side first engaging portion protrudes from the inner shim body portion toward the brake pad in the rotor axial direction,
The outer shim side first engaging portion protrudes from the outer shim main body portion toward the brake pad in the rotor axial direction, and covers the inner shim side first engaging portion on the inner shim side first engaging portion. The shim set according to claim 1, wherein the shim set extends to a position facing a surface on the disk rotor side of the back plate of the brake pad. In a state where the inner shim and the outer shim are engaged at least in the rotor axial direction,
The inner shim side second engaging portion protrudes from the inner shim main body portion inward in the rotor radial direction,
The outer shim side second engaging portion protrudes from the outer shim main body portion toward the brake pad in the rotor axial direction, and a part thereof is disposed on the disk rotor side of the inner shim side second engaging portion. The shim set according to any one of Items 1 to 3. A shim set according to any one of claims 1 to 4;
A pair of said brake pads;
A caliper arranged so as to straddle a part of the outer periphery of the disk rotor;
A support shaft portion that supports the brake pad so as to be movable in the rotor axial direction within the caliper;
The pressing member assembled to the caliper;
With
The brake pad includes a friction material that slides against the disk rotor to generate a frictional force, and a back plate that supports the back surface of the friction material,
A first groove is formed on the outer side in the rotor radial direction of the back plate, and a second groove is formed on the inner side in the rotor radial direction of the back plate,
The support shaft portion includes an outer peripheral support shaft that is provided in the caliper and engages with the first groove portion, and an inner peripheral support shaft that is provided in the caliper and engages with the second groove portion,
The friction coefficient between the pressing member and the outer shim is set to be larger than the friction coefficient between the outer shim and the inner shim,
The shim set is assembled to the brake pad,
The caliper assembly is assembled to the support shaft portion so that the brake pad is rotatable by a predetermined amount around the axis of the inner peripheral support shaft.

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