JP7376430B2 - Disc brake and cover parts - Google Patents

Description

The present invention relates to disc brakes and cover parts.

Some disc brakes have a cover part attached to a part of the caliper that is visible when viewed from the outside of the vehicle (for example, see Patent Document 1).

German Patent Application No. 4101514

It is desired to improve the adhesion of the cover component to the caliper and to suppress the cover component from falling off the caliper.

An object of the present invention is to provide a disc brake and a cover component that can improve the adhesion of the cover component to the caliper and suppress the fall of the cover component from the caliper.

In order to achieve the above object, a first aspect of the present invention provides a caliper that accommodates a piston movably in the axial direction of a disk, the caliper including a cylinder portion having a cylinder hole in which the piston is accommodated; a bridge portion provided across the outer circumferential side of the disk from a portion thereof; a claw portion provided from the bridge portion facing the cylinder portion in the axial direction of the cylinder hole; a recessed portion provided in the cylinder hole and having a groove on an inner circumferential surface; a plate member that covers the recessed portion from an axial direction of the cylinder hole; and a locking member that fixes the plate member to the caliper. a fixing portion fixed to the plate member; and a first inner end portion extending from the fixing portion in the axial direction of the cylinder hole and bent inward in the radial direction of the cylinder hole, the first inner end portion of which abuts on the groove. (1) an inner bent locking piece; and a first outer bent portion extending from the fixing portion in the axial direction of the cylinder hole and having a first outer tip portion bent radially outward of the cylinder hole abutting the groove; and a locking member having a locking piece.

A second aspect of the present invention is a caliper that accommodates a piston so as to be movable in the axial direction of a disk, the caliper including a cylinder portion having a cylinder hole in which the piston is accommodated, and an outer peripheral side of the disk from the cylinder portion. a bridge portion provided across the bridge portion; a claw portion provided from the bridge portion to face the cylinder portion in the axial direction of the cylinder hole; a claw portion provided on the claw portion facing the cylinder hole; a recessed portion having a groove; and a plate member that covers the recessed portion from the axial direction of the cylinder hole; a locking member fixed to the plate member; a first inner tip extending from the fixing part in the axial direction of the cylinder hole and bent inward in the radial direction of the cylinder hole; a first inner bent locking piece whose portion abuts the groove; and a first outer tip portion which extends from the fixing portion in the axial direction of the cylinder hole and is bent radially outward of the cylinder hole, which is in contact with the groove. a locking member having a first outer bent locking piece that comes into contact with the locking member.

According to the present invention, it is possible to improve the adhesion of the cover component to the caliper and to suppress the cover component from falling off from the caliper.

FIG. 1 is a front view showing a disc brake according to an embodiment. FIG. 1 is a side view showing a disc brake according to an embodiment. FIG. 2 is a perspective view showing a caliper body and a cover part of a disc brake according to an embodiment. FIG. 3 is a rear view of the disc brake according to the embodiment, with the bridge portion of the caliper body cut away and the pawl portion and cover component visible. FIG. 2 is a perspective view of the disc brake according to the embodiment, with the bridge portion of the caliper body cut away and the pawl portion and cover component viewed. FIG. 5 is a sectional view taken along line VI-VI shown in FIG. 4 in which the bridge portion of the caliper body of the disc brake according to the embodiment is cut to show the pawl portion and the cover component. The front view which shows the plate member of the disc brake of embodiment. FIG. 3 is a rear view showing a plate member of the disc brake according to the embodiment. The perspective view which shows the plate member of the disc brake of embodiment. FIG. 3 is a front view showing a locking member of the disc brake according to the embodiment. FIG. 3 is a rear view showing a locking member of the disc brake according to the embodiment. FIG. 2 is a perspective view showing a locking member of a disc brake according to an embodiment. FIG. 2 is a perspective view showing a locking member of a disc brake according to an embodiment. FIG. 3 is a rear view showing a cover part of the disc brake according to the embodiment. FIG. 3 is a perspective view showing a cover part of the disc brake according to the embodiment.

Embodiments will be described below with reference to the drawings.

The disc brake 10 of the embodiment shown in FIGS. 1 and 2 is for use in vehicles such as automobiles and applies braking force to the vehicle, and specifically is for braking the front wheels of a four-wheeled vehicle. The disc brake 10 brakes the vehicle by stopping the rotation of a disc-shaped disc 11 that rotates together with wheels (not shown).

As shown in FIG. 1, the disc brake 10 includes a mounting member 12, a caliper 13, a cover component 14, and a pair of pad springs 15, and as only one is shown in FIG. It is equipped with 16. Further, the disc brake 10 includes a pair of friction pads 17 (first friction pad) and friction pad 18 (second friction pad).

Hereinafter, the central axis of the disk 11 will be referred to as the disk axis, and the direction in which the disk axis extends, that is, the axial direction of the disk 11 will be referred to as the disk axial direction. Further, the radial direction of the disc 11 within the disc brake 10 is referred to as the disc radial direction, and the circumferential direction, that is, the rotational direction, of the disc 11 within the disc brake 10 is referred to as the disc circumferential direction. The center side of the disk 11 in the disk radial direction is called the disk radially inner side, and the side opposite to the center of the disk 11 in the disk radial direction is called the disk radially outer side. Further, the center side in the disk circumferential direction is referred to as the disk circumferential inner side, and the side opposite to the center in the disk circumferential direction is referred to as the disk circumferential outer side. Further, a line that passes through the disk axis and the center of the disk brake 10 in the disk circumferential direction and extends in the disk radial direction is referred to as a radial reference line. This radial reference line is orthogonal to the disk axis. Further, the outer side in the vehicle width direction of the vehicle to which the disc brake 10 is attached is referred to as the outer side, and the inner side is referred to as the inner side.

As shown in FIG. 1, the mounting member 12 includes an inner beam portion 21, a pair of inner pad support portions 22, a pair of outer pad support portions 24, an outer beam portion 25, and a pair of pin insertion portions 27. There is. The mounting member 12 is an integrally cast product, and has a mirror-symmetrical shape with respect to a plane that includes both the radial reference line and the disk axis.

As shown in FIG. 2, the inner beam portion 21 is disposed on one side of the disk 11 in the disk axial direction and is fixed to a non-rotating portion of the vehicle. Here, the non-rotating part of the vehicle to which the inner beam part 21 of the mounting member 12 is fixed is arranged on the inner side with respect to the disc 11, and the inner beam part 21 attached to this non-rotating part is also attached to the disc 11. On the other hand, it is placed on the inner side. As shown in FIG. 1, the inner beam portion 21 is arranged to extend in the circumferential direction of the disk, and a pair of mounting boss portions 32 each having a mounting hole 31 is provided at both end portions on the outer side in the circumferential direction of the disk. There is. The inner beam portion 21 is attached to a non-rotating portion of the vehicle by bolts (not shown) that are screwed into respective attachment holes 31 at a pair of attachment boss portions 32 .

The pair of inner pad supporting parts 22 is such that one inner pad supporting part 22 extends from one end of the inner beam part 21 on the outer side in the disk circumferential direction, and the other inner pad supporting part 22 connects the outer end of the inner beam part 21 with the disk of the inner beam part 21 . They each extend outward in the disk radial direction from the other circumferentially outer end. The pair of inner pad support parts 22 are arranged on the inner side with respect to the disk 11, like the inner beam part 21, as one is shown in FIG.

As one is shown in FIG. 2, the pair of pin insertion parts 27 are arranged so that one pin insertion part 27 extends from the outer end in the disk radial direction of the inner pad support part 22 on one side in the disk circumferential direction. It extends across the outer peripheral side of the disk 11 in the direction. The other pin insertion part 27 of the pair of pin insertion parts 27 shown in FIG. It extends across the outer peripheral side of 11.

As one is shown in FIG. 2, in the pair of outer pad supporting parts 24, the outer pad supporting part 24 on one side in the circumferential direction of the disk is connected to the inner side pad of the pin insertion part 27 on one side in the circumferential direction of the disk. It extends inward in the disk radial direction from the end opposite to the support portion 22, that is, on the outer side. Further, in the pair of outer pad support parts 24, the other outer pad support part 24 on the other side in the disk circumferential direction shown in FIG. , extending inward in the radial direction of the disk. As one is shown in FIG. 2, the pair of outer pad support parts 24 are arranged on the outer side with respect to the disk 11.

As shown in FIG. 1, the outer beam portion 25 extends in the disk circumferential direction and connects the inner end portions of the pair of outer pad support portions 24 in the disk radial direction. The outer beam portion 25 is arranged on the outer side with respect to the disk 11, like the pair of outer pad support portions 24.

As described above, the mounting member 12 is provided across the outer circumferential side of the disk 11 and is fixed to a non-rotating portion of the vehicle. The inner beam portion 21 and the pair of inner pad support portions 22 are arranged on the inner side of the mounting member 12, which is the side to be attached to a non-rotating part of the vehicle, and the pair of outer pad support portions 24 and the outer beam portion 25 is arranged on the outer side of the mounting member 12, which is opposite to the inner side.

Pad guide portions 35 are formed in the pair of outer pad support portions 24 on mutually opposing sides. These pad guide portions 35 are recessed in the direction away from each other along the circumferential direction of the disk. Although not shown, similar pad guide portions are also formed in the pair of inner pad support portions 22.

One pad spring 15 of the pair of pad springs 15 is attached so as to straddle the inner pad support portion 22 and the outer pad support portion 24 located on the same side in the disk circumferential direction. The pad spring 15 has a concave guide portion 37 that fits into a concave pad guide portion 35 of the outer pad support portion 24 on one side in the disk circumferential direction. Although not shown, the pad spring 15 has a concave guide portion that fits into a concave pad guide portion of the inner pad support portion 22 on one side in the circumferential direction of the same disk.

The other pad spring 15 of the pair of pad springs 15 is attached so as to straddle the inner pad support portion 22 and the outer pad support portion 24 located on the same other side in the disk circumferential direction. This pad spring 15 has a concave guide portion 37 that fits into a concave pad guide portion 35 of the outer pad support portion 24 on the other side in the disk circumferential direction. Although not shown, the pad spring 15 has a concave guide portion that fits into a concave pad guide portion of the inner pad support portion 22 on the other side in the circumferential direction of the same disk.

Friction pad 17 and friction pad 18 shown in FIG. 2 are common parts. As one friction pad 18 is shown in FIG. 1, the friction pads 17 and 18 have a back plate 41, and the back plate 41 has ears 44 at both outer ends in the disk circumferential direction. There is. The friction pads 17, 18 each have a lining 42, as shown in FIG. The lining 42 is attached to one side of the corresponding back plate 41 in the thickness direction.

As shown in FIG. 1, the friction pad 18, which is disposed on the outer side of the friction pads 17 and 18, has ears 44 at both outer ends in the disk circumferential direction that guide the respective guide portions 37 of the pair of pad springs 15. The pad guide portions 35 of the pair of outer pad support portions 24 are fitted through the pad guide portions 35 of the pair of outer pad support portions 24 . At this time, the pair of pad springs 15 elastically support this friction pad 18. In this way, the outer friction pad 18 is supported by the pair of outer pad supports 24 of the mounting member 12 via the pair of pad springs 15 so as to be movable in the disk axial direction.

The friction pad 17 shown in FIG. 2, which is disposed on the inner side of the friction pads 17 and 18, has ears (not shown) at both outer ends in the disk circumferential direction that are connected to guide parts (not shown) of each of the pair of pad springs 15. ) is fitted into each pad guide portion (not shown) of the pair of inner pad support portions 22 . At this time, the pair of pad springs 15 elastically support this friction pad 17. In this way, the inner friction pad 17 is supported by the pair of inner pad supports 22 of the mounting member 12 via the pair of pad springs 15 so as to be movable in the disk axial direction.

Friction pads 17 and 18 both face disk 11 at lining 42 . Therefore, the lining 42 of both friction pads 17 and 18 comes into contact with the disk 11. A pair of friction pads 17 and 18 supported by the mounting member 12 via a pair of pad springs 15 are pressed against the disk 11 by the caliper 13.

The inner-side friction pad 17 is movably provided on the mounting member 12 and is arranged to face one inner-side surface 11a of both surfaces 11a and 11b of the disk 11 in the disk axial direction. The outer friction pad 18 is movably provided on the mounting member 12 and is disposed opposite to the other outer surface 11b of the surfaces 11a and 11b on both sides of the disk 11 in the disk axial direction.

In the mounting member 12, pin insertion holes (not shown) extending in the disk axial direction are formed in each of a pair of pin insertion portions 27 on both sides in the disk circumferential direction shown in FIG. As only one of them is shown in FIG. 2, a pair of slide pins 47 on both sides of the caliper 13 in the disk circumferential direction are slidably fitted. Thereby, the mounting member 12 supports the caliper 13 slidably in the disk axial direction at the pair of pin insertion portions 27 thereof. In other words, in the caliper 13, the pair of slide pins 47 provided on both sides in the circumferential direction of the disk are slidably fitted into pin insertion holes (not shown) of the pair of pin insertion parts 27 of the mounting member 12, respectively. As a result, it is supported by the mounting member 12 so as to be movable in the disk axial direction. The pair of boots 16 each cover a slide pin 47 protruding from the pin insertion part 27.

The caliper 13 includes a caliper body 51, a pair of slide pins 47, only one of which is shown in FIG. 2, a pair of pin mounting bolts 52, only one of which is shown in FIG. 2, and a bleeder plug 53. The caliper 13, except for the configuration related to the bleeder plug 53, has a mirror-symmetrical shape with respect to a plane that includes both the radial reference line and the disk axis.

The caliper body 51 is integrally formed by casting. The caliper body 51 has a cylinder portion 55, a bridge portion 56, and a claw portion 57. In other words, the caliper 13 including the caliper body 51 has a cylinder portion 55, a bridge portion 56, and a claw portion 57.

The cylinder portion 55 is arranged on the inner side of the disk 11 in the disk axial direction. The bridge portion 56 extends from the outer side of the cylinder portion 55 in the disk radial direction toward the outer side along the disk axial direction. In other words, the bridge portion 56 is provided extending from the cylinder portion 55 to the outer peripheral side of the disk 11 . The claw portion 57 extends inward in the disk radial direction from the side of the bridge portion 56 opposite to the cylinder portion 55 in the disk axial direction, and is disposed on the outer side of the disk 11 in the disk axial direction.

As shown in FIG. 3, the caliper body 51 has a pair of pin attachment portions 65 extending from the cylinder portion 55 to both sides in the disk circumferential direction. As one is shown in FIG. 2, one slide pin 47 is attached to one of the pair of pin attachment portions 65 by one pin attachment bolt 52, and the pair of pin attachment portions 65 The other slide pin (not shown) is attached to the other pin attachment portion 65 by the other pin attachment bolt (not shown).

A pair of cylinder holes 71 are formed in the cylinder portion 55, one of which is shown in FIG. Each of the pair of cylinder holes 71 has a shape with one end open toward the claw portion 57 side and recessed toward the side opposite to the claw portion 57 in the disk axial direction. In other words, the pair of cylinder holes 71 are both recessed toward the side opposite to the disk 11 in the cylinder portion 55 . The pair of cylinder holes 71 are both along the disk axial direction. The pair of cylinder holes 71 have the same shape, are aligned in the disk axial direction and the disk radial direction, are shifted in the disk circumferential direction, and are arranged in the cylinder portion 55 in the disk circumferential direction, as shown in FIG. It is provided. The caliper 13 is a so-called twin-bore caliper having two cylinder holes 71.

A piston 72 is arranged in each cylinder hole 71 so as to be movable in the disk axial direction. In other words, the cylinder portion 55 has a cylinder hole 71 in which the piston 72 is accommodated. The caliper 13 accommodates a piston 72 movably in the disk axial direction.

As shown in FIG. 3, the claw portion 57 is provided facing the cylinder portion 55 in the axial direction of the cylinder hole 71 from the bridge portion 56. The claw portion 57 overlaps the cylinder portion 55 in the radial direction of the cylinder hole 71.

As shown in FIG. 2, of the friction pads 17 and 18, the outer friction pad 18 is supported by the mounting member 12 and is disposed between the claw portion 57 and the disk 11. Further, among the friction pads 17 and 18, the inner friction pad 17 is supported by the mounting member 12 and is located between the cylinder portion 55 and the piston 72 shown in FIG. It will be placed in The piston 72 faces the inner friction pad 17 of the friction pads 17 and 18 in the disk axial direction, and presses the friction pad 17.

As shown in FIGS. 4 and 5, the claw portion 57 includes a root portion 60 on the bridge portion 56 side, a pair of outer claws 61 at both ends on the opposite side to the bridge portion 56 and on the outer side in the disk circumferential direction, and 56 and an intermediate claw 62 between the pair of outer claws 61. The root portion 60, the pair of outer pawls 61, and the intermediate pawl 62 are all located on the opposite side of the bridge portion 56 from the cylinder portion 55 in the disk axial direction, and extend inward from the bridge portion 56 in the disk radial direction to engage the disk 11. It is located on the outer side in the axial direction of the disk. In other words, the root portion 60, the pair of outer claws 61, and the intermediate claws 62 are all arranged on the tip side of the bridge portion 56 in the direction in which it extends from the cylinder portion 55. The pair of outer pawls 61 and the intermediate pawls 62 are both aligned with the cylinder portion 55 in the disk circumferential direction and the disk radial direction, and are arranged to face the cylinder portion 55 in the disk axial direction. The pair of outer pawls 61 each have a width narrower in the disk circumferential direction than the intermediate pawl 62.

The outer pawl 61 and the intermediate pawl 62 are spaced apart from each other in the disk circumferential direction. Thereby, the claw portion 57 forms a recess portion 81 having a shape that penetrates in the disk axial direction and exits inward in the disk radial direction between the outer claw 61 and the intermediate claw 62 that are adjacent in the disk circumferential direction. In other words, the recessed portion 81 is provided between the outer claw 61 and the intermediate claw 62, and has a shape that is recessed from the inner end of the claw portion 57 in the disk radial direction toward the outer side in the disk radial direction. In other words, the recessed portion 81 is open at the inner end in the disk radial direction.

Specifically, the claw portion 57 has three claws, a pair of outer claws 61 and an intermediate claw 62, so that two recess portions 81 are provided. A recessed portion 81 is formed in the caliper body 51 so as to face each of the pair of cylinder holes 71 . That is, the caliper body 51 is provided with the same number of recess portions 81 as the cylinder holes 71 .

One of the two recess portions 81 is provided between one of the outer claws 61 of the pair of outer claws 61 and the intermediate claw 62, and one of the two cylinder holes 71 is provided between the outer claw 61 and the intermediate claw 62. The cylinder hole 71 and the disk circumferential direction and the disk radial direction overlap each other and face each other in the disk axial direction. This one recess portion 81 is a portion into which a tool for machining the interior of the opposing cylinder hole 71 is inserted.

The other of the two recesses 81 is provided between the other outer claw 61 of the pair of outer claws 61 and the intermediate claw 62, and , are opposed to each other in the disk axial direction with their positions in the disk circumferential direction and disk radial direction overlapping with the other cylinder hole 71. This other recess portion 81 is a portion into which a tool for machining the other opposing cylinder hole 71 is inserted.

In other words, the claw portion 57 is provided with one recess portion 81 facing one cylinder hole 71 and the other recess portion 81 facing the other cylinder hole 71. The caliper body 51 , that is, the caliper 13 including the caliper body 51 has a pair of recess portions 81 .

These recesses 81 have mirror-symmetrical shapes with respect to a plane that includes both the radial reference line and the disk axis. These recesses 81 are aligned in the disk axial direction and disk radial direction, and are arranged in parallel in the disk circumferential direction with their positions shifted in the disk circumferential direction. Since the two recesses 81 have a mirror-symmetrical shape, one of the recesses 81 will be explained here as an example.

As shown in FIG. 6 , the inner circumferential surface 91 of the recessed portion 81 has a main surface portion 92 and a stepped surface portion 93 . The main surface portion 92 has a cylindrical shape and is formed extending from the middle portion of the inner circumferential surface 91 in the disk axial direction to the side opposite to the cylinder portion 55 (left side in FIG. 6). The stepped surface portion 93 has a planar shape that extends inward in the radial direction of the main surface portion 92 from the edge portion of the main surface portion 92 on the cylinder portion 55 side (right side in FIG. 6) in the disk axial direction. The main surface portion 92 is a cylindrical surface coaxial with the central axis of the cylinder hole 71 shown in FIG. In other words, the main surface portion 92 is a cylindrical surface extending in the disk axial direction. The stepped surface portion 93 is a plane perpendicular to the central axis of the cylinder hole 71. As shown in FIG. 5, the main surface portion 92 is longer in the circumferential direction than half of the cylindrical surface. In other words, the main surface portion 92 has a central angle exceeding 180°.

As shown in FIG. 6, the inner circumferential surface 91 of the recessed portion 81 has a back surface portion 96, an end side surface portion 97, and an intermediate side surface portion 98. The back surface portion 96 is located closer to the cylinder portion 55 in the disk axial direction (the right side in FIG. 6) than the stepped surface portion 93 and has a substantially cylindrical shape. As shown in FIG. 5, the end side surface portion 97 has a substantially planar shape that extends inward in the disk radial direction from the edge portion of the main surface portion 92 on the outer claw 61 side and on the inner side in the disk radial direction. The intermediate side surface portion 98 has a substantially planar shape that extends inward in the disk radial direction from the edge portion of the main surface portion 92 on the intermediate pawl 62 side and on the disk radially inner side.

The back surface portion 96 is a substantially cylindrical surface coaxial with the center axis of the cylinder hole 71 . The end side surface portion 97 and the intermediate side surface portion 98 are along the central axis of the cylinder hole 71 and are substantially parallel to a plane including both the radial reference line and the disk axis. The main surface portion 92 is recessed from the back surface portion 96 toward the outside in the radial direction. Further, the main surface portion 92 is recessed outward in the disk circumferential direction from the end side surface portion 97 and recessed inward in the disk circumferential direction from the intermediate side surface portion 98 .

The inner circumferential surface 91 of the recessed portion 81 has a groove 101 that is recessed outward in the radial direction of the main surface portion 92 from the intermediate portion of the main surface portion 92 in the disk axial direction. In other words, the recessed portion 81 has the groove 101 on the inner circumferential surface 91. The groove 101 is along the inner circumferential surface 91 of the recessed portion 81 and has an arc shape as a whole. The groove 101 has an arcuate shape concentric with the main surface portion 92 . The groove 101 is formed over the entire circumferential direction of the main surface portion 92, and both ends thereof in the circumferential direction overlap the end side surface portion 97 and the intermediate side surface portion 98 in the circumferential direction. In other words, the groove 101 has a circumferentially intermediate portion formed over the entire circumferential direction of the main surface portion 92 , and both circumferential end portions that are closer to the end side surface portion 97 than the main surface portion 92 and the intermediate side surface portion. It's on the 98 side. Similarly to the main surface portion 92, the groove 101 also has a center angle exceeding 180°.

As shown in FIG. 6, the groove 101 has a groove bottom surface 102 and a pair of wall surfaces 103 and 104. The groove bottom surface 102 has a cylindrical shape coaxial with the main surface portion 92 . The center angle of the groove bottom surface 102 also exceeds 180°. The pair of wall surfaces 103 and 104 have a planar shape that rises inward in the radial direction of the groove bottom surface 102 from both end edges of the groove bottom surface 102 in the disk axial direction. The pair of wall surfaces 103 and 104 are both planar shapes that extend perpendicularly to the central axis of the groove bottom surface 102. In other words, each of the pair of wall surfaces 103 and 104 has a planar shape that extends orthogonally to the central axis of the main surface portion 92. Of the pair of wall surfaces 103 and 104, the main surface portion 92 side of the wall surface 103 on the side opposite to the cylinder portion 55 (the left side in FIG. 6), in other words, the inner edge portion 105 in the radial direction of the wall surface 103 has an arc shape. It has become. The center angle of the edge portion 105 also exceeds 180°.

Here, the back surface portion 96, the end side surface portion 97, and the intermediate side surface portion 98 may be cast surfaces that are cast when the caliper body 51 is cast. On the other hand, the main surface portion 92, the stepped surface portion 93, the groove bottom surface 102 of the groove 101, and the pair of wall surfaces 103, 104 are machined surfaces formed on the caliper body 51 by cutting after casting.

The main surface portion 92 is more recessed along the disk circumferential direction than the end side surface portion 97 and is more recessed than the intermediate side surface portion 98 along the disk circumferential direction. In the groove 101, the distance between both end portions on the opposite side of the bridge portion 56 is smaller than the diameter. That is, in the groove 101, the distance between both ends of the groove bottom surface 102 in the circumferential direction on the side opposite to the bridge portion 56 is smaller than the diameter of the groove bottom surface 102.

As shown in FIGS. 4 to 6, the cover component 14 includes a plate member 111 and a locking member 112 that is a different member from the plate member 111. Two locking members 112 are provided, the same number as the number of recesses 81.

The plate member 111 has a shape shown in FIGS. 7 to 9. The plate member 111 is, for example, an integrally molded product made of metal such as an aluminum alloy, and has a mirror-symmetrical shape. The plate member 111 has a main plate portion 121 and a pair of protrusions 124. Note that the plate member 111 is not limited to being made of metal such as aluminum alloy, and may be integrally molded using a material such as synthetic resin.

The main plate portion 121 has a substantially rectangular plate shape and has a long edge portion 131, a long edge portion 132, and a pair of short edge portions 133 on the outer periphery. One of the long side edges 131 has an arc shape that bulges out toward the outside of the main plate portion 121 as a whole. The other long side edge 132 includes a pair of linear end side edges 136 disposed on the same straight line, and an arcuate intermediate edge 137 that is located between these and is recessed toward the inside of the main plate 121. It has A pair of short side edges 133 of the main plate portion 121 are linear and connect the long side edges 131 and 132. The pair of short edges 133 are parallel to each other. The main plate portion 121 has a flat plate shape with a constant thickness.

As shown in FIGS. 8 and 9, the pair of protrusions 124 rise perpendicularly from the main plate 121 on the same side in the thickness direction of the main plate 121. As shown in FIGS. The distances between the pair of protrusions 124 and the pair of end side edges 136 are the same.

The pair of protrusions 124 each have an outer peripheral surface 150 in the shape of an equilateral triangular prism having three side surfaces 151. Each of the pair of protrusions 124 has one side surface 151 parallel to the end side edge 136 and facing opposite to the end side edge 136, and a corner between the remaining two side surfaces 151 as a long side edge. 132.
In addition, each of the pair of protrusions 124 has one side surface 151 parallel to the end side edge 136 and on the same side as the end side edge 136, and the corner between the remaining two side surfaces 151 is the long side. It may be formed so as to be oriented toward the edge 131.

In the pair of protrusions 124, one protrusion 124 is disposed near one of the pair of short edges 133, and the other protrusion 124 is disposed near the other short edge 133. It is located near 133. The distance between one protrusion 124 and one short edge 133 close to it is equal to the distance between the other protrusion 124 and the other short edge 133 close to it. The distance between the centers of the pair of protrusions 124 is set to be equal to the distance between the centers of the main surface portions 92 of the pair of recesses 81 shown in FIG.

The locking member 112 has a shape shown in FIGS. 10 to 13. The locking member 112 is an integrally molded product formed from a spring steel plate by press molding, and has a mirror-symmetrical shape. The locking member 112 includes a fixing portion 161, an inner bent locking piece 162, an inner bent locking piece 163, an inner bent locking piece 164, an inner bent locking piece 165, and an outer bent locking piece 165. It has a locking piece 166 and an outer bent locking piece 167.

The fixing part 161 includes a base plate part 171 and a plurality of fixing pieces 172, specifically three fixing pieces 172. The substrate part 171 has a perforated flat plate shape with a constant thickness, and has a pair of arcuate edges 173 and 174, both of which are arcuate, a linear edge 175, and a linear edge 175 on the outer periphery. It has a straight edge 176. The arcuate edge 173 and the arcuate edge 174 are mirror symmetrical and bulge in opposite directions. Straight edge 175 and straight edge 176 are parallel. Straight edge 175 and straight edge 176 connect arcuate edge 173 and arcuate edge 174.

The base plate portion 171 has a circular inner peripheral edge 177 and a plurality of guide locking pieces 178 that protrude radially inward from the inner peripheral edge 177. Three guide locking pieces 178 are provided, the same number as the outer peripheral side corners of the triangular prism-shaped protrusion 124 of the plate member 111. The three guide locking pieces 178 have the same shape and are substantially triangular. Note that the three guide locking pieces 178 do not have to have a substantially triangular shape as long as they have a shape that makes point or line contact with the protrusion 124. The three guide locking pieces 178 all have a shape in which the apex points toward the center of the circle formed by the inner peripheral edge 177. The three guide locking pieces 178 are arranged at equal intervals in the circumferential direction of the circle formed by the inner peripheral edge 177, and are arranged at 120° intervals. The tops of the protruding tips of the three guide locking pieces 178 are arranged at each corner of an equilateral triangle centered on the center of the circle formed by the inner peripheral edge 177. The positional relationship between the tops of the three guide locking pieces 178 is the same as the positional relationship between the three outer peripheral corners of the triangular prism-shaped protrusion 124 of the plate member 111.

One of the three guide locking pieces 178 is arranged on a line connecting the center of the circle formed by the inner peripheral edge 177 and the center of the straight edge 176 in the length direction. There is. This guide locking piece 178 is arranged at a position closest to the linear edge 176 on the inner peripheral edge 177 and farthest from the linear edge 175. The remaining two guide locking pieces 178 of the three guide locking pieces 178 are arranged at positions equidistant from the linear edge 176 and equidistant from the linear edge 175. It is located in

The base plate portion 171 has an annular main body portion 179 except for the three guide locking pieces 178 . The main body portion 179 has an arcuate edge 173 , an arcuate edge 174 , a linear edge 175 , a linear edge 176 , and an inner peripheral edge 177 . The three guide locking pieces 178 protrude inward from the main body 179 in the radial direction of the main body 179 .

The fixing portion 161 is provided with three fixing pieces 172, the same number as the side surfaces 151 of the protruding portion 124. The three fixing pieces 172 protrude inward in the radial direction from the inner peripheral edge 177 of the base plate part 171. The three fixed pieces 172 have the same shape. The three fixing pieces 172 are all shaped toward the center of the circle formed by the inner peripheral edge 177 when viewed in the thickness direction of the substrate portion 171. The three fixing pieces 172 are arranged alternately with the three guide locking pieces 178 in the circumferential direction of the inner peripheral edge 177. The three fixing pieces 172 are arranged at equal intervals in the circumferential direction of the inner peripheral edge portion 177, and are arranged at 120° intervals. The three fixing pieces 172 are arranged at equal distances from the two guide locking pieces 178 on both sides of the inner circumferential edge 177 in the circumferential direction. The three fixed pieces 172 and the three guide locking pieces 178 are opposed to each other in the radial direction of the inner peripheral edge 177, with each of the fixed pieces 172 and the guide locking pieces 178 facing each other in the radial direction of the inner peripheral edge portion 177.

One of the three fixing pieces 172 is arranged on a line connecting the center of the circle formed by the inner peripheral edge 177 of the substrate portion 171 and the center of the linear edge 175 in the length direction. This fixing piece 172 is arranged at a position furthest from the linear edge 176 on the inner peripheral edge 177 and closest to the linear edge 175. The remaining two fixing pieces 172 of the three fixing pieces 172 are arranged at positions equidistant from the linear edge 176 and equidistant from the linear edge 175.

Each of the three fixing pieces 172 has an inner base plate part 181 and a fixing plate part 182. The inner root plate part 181 is flat and extends from the inner peripheral edge 177 of the base plate part 171 in the same plane as the base plate part 171 in the radial direction of the inner peripheral edge part 177 . The fixing plate part 182 has a flat plate shape, and extends inward in the radial direction of the inner peripheral edge part 177 while being inclined with respect to the base plate part 171 from the end edge on the extending tip side of the adjacent inner root plate part 181. There is. The fixed plate part 182 is inclined so that the further it extends from the adjacent inner base plate part 181, the further away from the base plate part 171 in the thickness direction of the base plate part 171. A tip edge 183 of the fixing plate 182 on the opposite side from the adjacent inner base plate 181 has a straight line parallel to the base plate 171 .

The three fixing pieces 172 extend on the same side of the substrate portion 171 in its thickness direction. The three end edges 183 of the three fixing pieces 172 are arranged to form each side of an equilateral triangle. The equilateral triangle formed by the three tip edges 183 is smaller than the equilateral triangle formed by the three side surfaces 151 of the protrusion 124 by the tightening margin.

In the fixing portion 161 having the above shape, the center of the circle formed by the inner peripheral edge portion 177 is the center portion. The three fixing pieces 172 and the three guide locking pieces 178 are provided on the center side of the fixing part 161.

As described above, the locking member 112 includes the inner bent locking piece 162, the inner bent locking piece 163, the inner bent locking piece 164, the inner bent locking piece 165, and the outer bent locking piece. 166 and an outer bent locking piece 167 are provided. The inner bent locking pieces 162 to 165 have the same shape. The outer bent locking pieces 166 and 167 have the same shape, but have a different shape from the inner bent locking pieces 162 to 165.

The locking member 112 is provided with one or more inner bent locking pieces having the same shape, and specifically, four inner bent locking pieces 162 to 165 are provided. The locking member 112 is provided with one or more outer bent locking pieces having the same shape, and specifically, two outer bent locking pieces 166 and 167 are provided. The locking member 112 is provided with two or more locking pieces, and specifically, six locking pieces 162 to 167 are provided.

The inner bent locking piece 162 , the inner bent locking piece 164 , and the outer bent locking piece 166 extend from the arcuate edge 173 of the fixing portion 161 . The inner bent locking piece 163 , the inner bent locking piece 165 , and the outer bent locking piece 167 extend from the arcuate edge 174 of the fixing portion 161 . No locking pieces are provided on the linear edges 175, 176. The inner bent locking piece 162 and the inner bent locking piece 163 are arranged mirror-symmetrically. The inner bent locking piece 164 and the inner bent locking piece 165 are arranged mirror-symmetrically. The outer bent locking piece 166 and the outer bent locking piece 167 are arranged mirror-symmetrically.

The inner bent locking piece 162 and the inner bent locking piece 163 pass through the center of the circle formed by the inner peripheral edge 177 of the base plate portion 171, and the straight edge is closer than the line parallel to the straight edges 175, 176. It is arranged on the section 176 side. The outer bent locking piece 166 and the outer bent locking piece 167 pass through the center of the circle formed by the inner peripheral edge 177 of the base plate 171, and the straight edge is closer to the straight edge than the line parallel to the straight edges 175, 176. It is arranged on the section 175 side. The inner bent locking piece 164 and the inner bent locking piece 165 are arranged further toward the linear edge 175 side than the outer bent locking piece 166 and the outer bent locking piece 167 are.

The outer bent locking piece 166 is disposed between the inner bent locking piece 162 and the inner bent locking piece 164 in the circumferential direction of the inner peripheral edge 177 of the base plate portion 171 . The distance between the outer bent locking piece 166 and the inner bent locking piece 162 is the same as the distance between the outer bent locking piece 166 and the inner bent locking piece 164. The outer bent locking piece 167 is disposed between the inner bent locking piece 163 and the inner bent locking piece 165 in the circumferential direction of the inner peripheral edge 177 of the base plate portion 171 . The distance between the outer bent locking piece 167 and the inner bent locking piece 163 is the same as the distance between the outer bent locking piece 167 and the inner bent locking piece 165. The inner bent locking pieces 162 to 165 and the outer bent locking pieces 166, 167 extend from the base plate portion 171 to the same side in the thickness direction of the base plate portion 171.

Each of the inner bent locking pieces 162 to 165 has an outer root portion 191, an intermediate portion 192, and a tip portion 193. In each of the inner bent locking pieces 162 to 165, a portion of the intermediate portion 192 adjacent to the tip portion 193 side and this tip portion 193 constitute an inner tip portion 194. The outer base portion 191 of each of the inner bent locking pieces 162 to 165 is in the shape of a flat plate, and is disposed on the same plane as the base plate portion 171. The outer root portions 191 of the inner bent locking pieces 162 and 164 extend outward from the arcuate edge 173 in the radial direction of the arcuate edge 173 . The outer root portions 191 of the inner bent locking pieces 163 and 165 extend outward from the arcuate edge 174 in the radial direction of the arcuate edge 174 .

The intermediate portion 192 of each of the inner bent locking pieces 162 to 165 has a flat plate shape. Each of the intermediate portions 192 extends from the end edge on the extending tip side of the adjacent outer root portion 191 to one side in the thickness direction of the substrate portion 171 . The intermediate portions 192 of the inner bent locking pieces 162 and 164 are inclined such that the farther from the base plate 171 in the thickness direction of the base plate 171, the further outside the arcuate edge 173 in the radial direction. . The intermediate portions 192 of the inner bent locking pieces 163 and 165 are inclined so that the farther from the substrate portion 171 in the thickness direction of the substrate portion 171, the further outward the arcuate edge portion 174 is located in the radial direction. .

Here, all the intermediate portions 192 of the inner bent locking pieces 162 to 165 are inclined at the same angle with respect to the adjacent outer root portion 191. Therefore, all of the intermediate portions 192 of the inner bent locking pieces 162 to 165 have a shape whose diameter increases as the distance from the substrate portion 171 increases in the thickness direction of the substrate portion 171. The angle between the intermediate portion 192 and the adjacent outer root portion 191 is greater than 90° and smaller than 135°.

The tip portion 193 of each of the inner bent locking pieces 162 to 165 has a flat plate shape. The tip portions 193 each extend from an edge portion of the adjacent intermediate portion 192 on the side opposite to the adjacent outer root portion 191 to the side opposite to the substrate portion 171 in the thickness direction of the substrate portion 171. There is. The tip portions 193 of the inner bent locking pieces 162 and 164 are inclined so that the farther from the base plate 171 in the thickness direction of the base plate 171, the more the tip ends 193 are located inside the arcuate edge 173 in the radial direction. . The tip portions 193 of the inner bent locking pieces 163 and 165 are inclined such that the further away from the base plate 171 in the thickness direction of the base plate 171, the more inward the arched edge 174 is in the radial direction. .

Here, each of the inner bent locking pieces 162 to 165 has a tip portion 193 that forms an equal angle with an adjacent intermediate portion 192. Therefore, all the tip ends 193 of the inner bent locking pieces 162 to 165 have a shape whose diameter decreases as the distance from the base plate 171 increases in the thickness direction of the base plate 171. The tip portion 193 forms an obtuse angle with the adjacent intermediate portion 192 .

The inner bent locking pieces 162 to 165 have a portion of each intermediate portion 192 on the side opposite to the substrate portion 171 and a tip portion 193 adjacent to this portion on the side of the substrate portion 171 in the direction in which the substrate portion 171 spreads. It constitutes an inner tip portion 194 which is bent in a manner similar to that shown in FIG. In the inner bent locking pieces 162 to 165, a convex boundary portion 195 between each intermediate portion 192 and an adjacent tip portion 193 is linear. All the boundary parts 195 of the inner bent locking pieces 162 to 165 are arranged so as to be tangent to the same circle. All the boundary parts 195 of the inner bent locking pieces 162 to 165 are arranged so that both ends of each in the extending direction are arranged on the same circle. The center of this circle is located on the central axis of the circle formed by the inner peripheral edge portion 177. The diameter of the circle passing through both ends of all the boundary parts 195 is larger than the diameter of the edge part 105 of the groove 101 of the recessed part 81. In other words, the diameter of the circle passing through both ends of all the boundary parts 195 is larger than the diameter of the main surface part 92. It has become. Furthermore, the edges of the extending tips of all the tip portions 193 of the inner bent locking pieces 162 to 165 are arranged so as to be tangent to the same circle.

The outer bent locking pieces 166 and 167 each have an outer root portion 201, an intermediate portion 202, and a tip portion 203. In each of the outer bent locking pieces 166 and 167, a portion of the intermediate portion 202 on the side of the distal end portion 203 adjacent thereto, and the distal end portion 203 constitute an outer distal end portion 204. The outer base portions 201 of each of the outer bent locking pieces 166 and 167 have a flat plate shape, and are disposed on the same plane as the base plate portion 171. The outer bent locking piece 166 has an outer root portion 201 extending outward from the arcuate edge 173 in the radial direction of the arcuate edge 173 . The outer bent locking piece 167 has an outer root portion 201 extending outward from the arcuate edge 174 in the radial direction of the arcuate edge 174 .

The intermediate portion 202 of each of the outer bent locking pieces 166, 167 has a flat plate shape. Each of the intermediate portions 202 extends from the end edge on the extending tip side of the adjacent outer root portion 201 to one side in the thickness direction of the substrate portion 171 . The intermediate portion 202 of the outer bent locking piece 166 is inclined so that the farther it is from the substrate portion 171 in the thickness direction of the substrate portion 171, the more the intermediate portion 202 is located on the outer side of the arcuate edge portion 173 in the radial direction. The intermediate portion 202 of the outer bent locking piece 167 is inclined so that the further away from the substrate portion 171 in the thickness direction of the substrate portion 171, the further outward the arcuate edge portion 174 is located in the radial direction.

Here, the intermediate portions 202 of the outer bent locking pieces 166 and 167 are inclined at the same angle with respect to the adjacent outer root portion 201. Therefore, the outer bent locking pieces 166 and 167 have a shape in which the diameter of each intermediate portion 202 as a whole becomes larger as the distance from the substrate portion 171 increases in the thickness direction of the substrate portion 171. The intermediate portion 202 of each of the outer bent locking pieces 166, 167 forms an obtuse angle with the adjacent outer root portion 201, and the intermediate portion 202 of each of the inner bent locking pieces 162 to 165 forms an obtuse angle. is smaller than the angle formed by the adjacent outer root portion 191.

The tip portions 203 of each of the outer bent locking pieces 166, 167 have a flat plate shape. The tip portion 203 of the outer bent locking piece 166 extends from the edge of the adjacent intermediate portion 202 on the side opposite to the adjacent outer root portion 201 to the outer side in the radial direction of the arcuate edge portion 173, and It extends toward the substrate portion 171 in the thickness direction of the substrate portion 171 . The tip portion 203 of the outer bent locking piece 167 extends from the edge of the adjacent intermediate portion 202 on the side opposite to the adjacent outer root portion 201 to the outer side in the radial direction of the arcuate edge portion 174, and It extends toward the substrate portion 171 in the thickness direction of the substrate portion 171 .

The tip portion 203 of the outer bent locking piece 166 is inclined so that the closer it gets to the substrate portion 171 in the thickness direction of the substrate portion 171, the more the tip portion 203 is located on the outer side of the arcuate edge portion 173 in the radial direction. The tip portion 203 of the outer bent locking piece 167 is inclined so that the closer it gets to the substrate portion 171 in the thickness direction of the substrate portion 171, the more the tip portion 203 is located on the outer side of the arcuate edge portion 174 in the radial direction.

Here, in the outer bent locking pieces 166 and 167, the respective tip portions 203 make the same angle with the adjacent intermediate portion 202. Therefore, the outer bent locking pieces 166 and 167 have both tip ends 203 having a shape that increases in diameter as they approach the base plate 171 in the thickness direction of the base plate 171 as a whole. The outer bent locking pieces 166 and 167 each have an acute angle between the tip portion 203 and the adjacent intermediate portion 202 .

The outer bent locking pieces 166 and 167 have a portion of each intermediate portion 202 on the side opposite to the substrate portion 171 and a tip portion 203 adjacent to this portion that are connected to the substrate portion 171 in the direction in which the substrate portion 171 extends. constitutes an outer tip portion 204 that is bent to the opposite side. In the outer bent locking pieces 166 and 167, a tip edge 205 of each tip 203 on the side opposite to the adjacent intermediate portion 202 is straight. The tip edges 205 of the outer bent locking pieces 166, 167 are arranged so as to be tangent to the same circle. All the end edges 205 of the outer bent locking pieces 166 and 167 are arranged so that both ends of each in the respective extending directions are arranged on the same circle. The center of this circle is located on the central axis of the circle formed by the inner peripheral edge portion 177. The diameter of the circle through which both ends of all the tip edges 205 of the outer bent locking pieces 166, 167 pass is larger than the diameter of the edge 105 of the groove 101 of the recessed part 81. , has a larger diameter than the diameter of the main surface portion 92.

As shown in FIGS. 14 and 15, the pair of locking members 112 are fitted and fixed to the pair of protrusions 124 of the plate member 111, forming the cover component 14. That is, one of the pair of locking members 112 is fitted into one of the protrusions 124 while elastically deforming the three fixing pieces 172 of the fixing part 161. At this time, in this one locking member 112, the base plate portion 171 is the leading edge in the fitting direction, and the linear edge portion 175 is the longer edge portion of the long edge portion 131 and the long edge portion 132 of the plate member 111. The linear edge 176 is arranged on the long edge 132 side of the long edge 131 and the long edge 132, and the linear edges 175 and 176 are arranged on the long edge 131 side. The position is parallel to the end side edge 136 of the edge 132. In addition, at this time, the three fixing pieces 172 of this one locking member 112 bring the respective tip edges 183 into line contact with the corresponding one of the three side surfaces 151 of the one protrusion 124. At the same time, the three guide locking pieces 178 move while being guided by the three corners of the outer peripheral surface 150 of the protrusion 124 at the three tops. Then, one of the locking members 112 is fitted into one of the protrusions 124 until the base plate part 171 is brought into contact with the main plate part 121. Then, the three tip edges 183 of this one locking member 112 come into line contact with the corresponding one of the three side surfaces 151 of the one protrusion 124, and the three The elastic force of the fixing piece 172 locks and fixes the plate member 111. Thereby, this one locking member 112 is fixed to the plate member 111 with the base plate part 171 in contact with the main plate part 121.

Further, of the pair of locking members 112, the other locking member 112 is fitted into the other protrusion 124 in the same manner as described above while elastically deforming the three fixing pieces 172 of the fixing portion 161. Thus, it is fixed to the plate member 111.

In this way, the pair of locking members 112 are fixed to the plate member 111 to form the cover component 14. In this state, two locking members 112 are arranged along the longitudinal direction of the plate member 111. The pair of locking members 112 are each fixed to the plate member 111 at a fixing portion 161. Further, in the pair of locking members 112, the inner bent locking pieces 162 to 165 and the outer bent locking pieces 166, 167 extend from the main plate portion 121 of the plate member 111 to the same side as the protruding portion 124. .

Then, this cover component 14 is assembled to the bridge portion 56 and claw portion 57 of the caliper body 51, as shown in FIGS. 4 to 6. At this time, the cover part 14 is assembled to the bridge part 56 and the claw part 57 from the side opposite to the cylinder part 55 shown in FIG. 3 in the disk axial direction.

When assembled to the bridge part 56 and the claw part 57, the cover part 14 is oriented with the pair of locking members 112 at the front and the main plate part 121 of the plate member 111 at the rear. It is fitted into the pair of recesses 81 .

At the initial stage of this fitting, one of the locking members 112 has four inner bent locking pieces 162 to 165 at the tip end 193, and two outer bent locking pieces 166 and 167 at the tip end. At 203 , it comes into contact with the end edge of the main surface 92 of one recess 81 on the side opposite to the cylinder 55 .

Similarly, the other locking member 112 has four inner bent locking pieces 162 to 165 at the tip 193, and two outer bent locking pieces 166 and 167 at the tip 203, respectively. The main surface portion 92 of the recessed portion 81 is brought into contact with the end edge portion of the main surface portion 92 on the side opposite to the cylinder portion 55 .

When the pair of locking members 112 are further fitted together, the four inner bent locking pieces 162 to 165 of one of the locking members 112 move toward the protrusion 124 to which it is attached due to the inclination of the tip end 193. While being elastically deformed, the two outer bent locking pieces 166 and 167 ride on the main surface part 92 of one of the recessed parts 81 at the boundary part 195, and due to the inclination of the tip part 203, the two outer bent locking pieces 166 and 167 are attached to the protruding part 124 to which they are attached. While elastically deforming to the side, the distal end edge 205 rides on the main surface 92 of one of the recesses 81 .

Similarly, in the other locking member 112, the four inner bent locking pieces 162 to 165 are elastically deformed toward the protrusion 124 to which they are attached due to the inclination of the tip portion 193, and the other locking pieces 162 to 165 are elastically deformed toward the protrusion 124 at the boundary portion 195. The two outer bent locking pieces 166 and 167 ride on the main surface 92 of the recessed portion 81, and the two outer bent locking pieces 166, 167 are elastically deformed toward the protrusion 124 to which they are attached due to the inclination of the tip 203, while the tip edge 205 At this point, it rides on the main surface portion 92 of the other recess portion 81 .

When the pair of locking members 112 are further fitted together, one of the locking members 112 will have a boundary portion 195 of each of the four inner bent locking pieces 162 to 165 in the groove 101 of one recess portion 81. As a result, each of the four inner bent locking pieces 162 to 165 returns to its elastic deformation a little, and each inner tip 194 touches the wall surface of this groove 101 at the intermediate portion 192. 103 on the main surface 92 side. At this time, the boundary portions 195 of the four inner bent locking pieces 162 to 165 overlap the wall surface 103 in the radial direction. Also, at this time, due to the elastic force of each of the four inner bent locking pieces 162 to 165, the inner tip portions 194 of the four inner bent locking pieces 162 to 165 are attached to the edge portion 105 of the groove 101 of the one recess portion 81 at the intermediate portion 192. It is pressed against and comes into contact with.

In parallel with the above, this one of the locking members 112 is such that the respective tip edges 205 of the two outer bent locking pieces 166 and 167 reach the position of the groove 101 of the one of the recessed portions 81. Therefore, these two outer bent locking pieces 166 and 167 slightly return the elastic deformation, and the respective tip edges 205 enter into this groove 101 and touch the wall surface 103 of this groove 101. The disks face each other in the axial direction of the disk and come into contact with each other. In other words, the tip edges 205 of these two outer bent locking pieces 166 and 167 overlap the wall surface 103 in the radial direction. Further, at this time, the respective elastic forces of the outer bent locking pieces 166 and 167 cause the respective tip edges 205 to press against and come into contact with the groove bottom surface 102 of the groove 101 of the one recess portion 81 .

Similarly, in the other locking member 112, each boundary portion 195 of the four inner bent locking pieces 162 to 165 reaches the position of the groove 101 of the other recess portion 81, so that these four The two inner bent locking pieces 162 to 165 each slightly return the elastic deformation, so that the inner tip portions 194 of the respective inner end portions 194 touch the end edges 105 of the wall surface 103 of the groove 101 on the main surface portion 92 side at the intermediate portion 192. comes into contact with. Also, at this time, due to the elastic force of each of the four inner bent locking pieces 162 to 165, the inner tip portion 194 of each of the four inner bent locking pieces 162 to 165 is attached to the end edge 105 of the groove 101 of the other recessed portion 81 at the intermediate portion 192. It is pressed against and comes into contact with.

Further, in this other locking member 112, the respective tip edges 205 of the two outer bent locking pieces 166, 167 reach the position of the groove 101 of the other recessed portion 81, so that These two outer bent locking pieces 166 and 167 slightly return the elastic deformation, and the respective tip edges 205 enter into this groove 101 and touch the wall surface 103 of this groove 101 in the disk axial direction. Opposing and abutting. Further, at this time, the respective elastic forces of the outer bent locking pieces 166 and 167 cause the respective tip edges 205 to be pressed and abut against the groove bottom surface 102 of the groove 101 of the other recessed portion 81.

Here, a total of four tip edges 205 of the outer bent locking pieces 166 and 167 of one locking member 112 and the outer bent locking pieces 166 and 167 of the other locking member 112 enter into the groove 101. At the same time as the plate member 111 contacts the wall surface 103, the plate member 111 contacts the bridge portion 56 and the claw portion 57 of the caliper 13 at the main plate portion 121 and stops. In this way, the cover part 14 is attached to the caliper 13.

As shown in FIG. 5, in the assembled cover component 14 assembled to the caliper 13 as described above, the plate member 111 extends the pair of recessed portions 81 to the outside opposite to the cylinder portion 55 in the disk axial direction. It will be covered from That is, in the plate member 111, the main plate portion 121 overlaps the pair of recess portions 81 in the disk circumferential direction and the disk radial direction. Further, in this assembled state, the pair of locking members 112 of the cover component 14 fixes the plate member 111 to the caliper 13.

In addition, in the assembled cover part 14, as shown in FIG. 6, the plurality of inner bent locking pieces 162 to 165 are elastically attached to the inner end of each of the inner bent locking pieces 162 and 164. At 194 , the boundary portion 195 is moved into the groove 101 and the intermediate portion 192 is maintained in contact with the edge portion 105 of the groove 101 .

Here, in the assembled cover part 14, the diameter of the intermediate portion 192 of the plurality of inner bent locking pieces 162 to 165 of one of the locking members 112 increases as the distance from the main plate portion 121 increases. Because of the inclination, the elastic force of these inner bent locking pieces 162 to 165 generates a component in the direction of bringing the main plate part 121 into contact with the bridge part 56 and the claw part 57. Similarly, in the assembled cover part 14, the elastic force of the plurality of inner bent locking pieces 162 to 165 of the other locking member 112 is also directed in the direction of bringing the main plate part 121 into contact with the bridge part 56 and the claw part 57. This will generate the following components. As a result, in the assembled cover component 14, the pair of locking members 112 bring the main plate portion 121 of the plate member 111 into contact with the bridge portion 56 and the claw portion 57 with elastic force, in other words, bring them into close contact. At this time, the main plate portion 121 mainly contacts the bridge portion 56 and the claw portion 57 at a portion further outward in the disk radial direction than the protruding portion 124 .

In addition, in the assembled cover part 14, as shown in FIG. Movement in the opposite direction away from the cylinder portion 55 is restricted by contacting the wall surface 103 of the groove 101 to which the claw portion 57 engages. The assembled cover part 14 prevents the plurality of outer bent locking pieces 166 and 167 of the other locking member 112 from moving away from the claw part 57 in the direction opposite to the cylinder part 55. It is regulated by coming into contact with the wall surface 103 of the groove 101 to which it is engaged.

Further, in the assembled cover component 14, the plate member 111 covers the two recess portions 81 from the axial direction of the cylinder hole 71. Further, in the assembled cover component 14, a pair of locking members 112 fixes the plate member 111 to the caliper 13. Further, in the assembled cover component 14, the pair of locking members 112 are each fixed to the plate member 111 at the fixing portions 161.

Further, one of the locking members 112 of the cover component 14 in the assembled state has an inner bent locking piece 162 extending from its fixing portion 161 to one of the cylinder holes in which the position of the locking member 112 in the disk circumferential direction matches. It extends in the axial direction of 71 so as to approach this cylinder hole 71 . In the one locking member 112 of the assembled cover component 14, the inner tip 194 of the inner bent locking piece 162 is bent inward in the radial direction of the one cylinder hole 71. In this one locking member 112 of the cover component 14 in the assembled state, the inner tip 194 of the inner bent locking piece 162 is connected to the end edge 105 of the groove 101 to be engaged at the intermediate portion 192. come into contact with The same applies to the other locking member 112 of the cover component 14 in the assembled state.

Further, one of the locking members 112 of the cover component 14 in the assembled state has an inner bent locking piece 163 extending from its fixed portion 161 to one of the cylinder holes in which the position of the locking member 112 in the disk circumferential direction matches. It extends in the axial direction of 71 so as to approach this cylinder hole 71 . In the one locking member 112 of the assembled cover component 14, the inner end portion 194 of the inner bent locking piece 163 is bent inward in the radial direction of the one cylinder hole 71. In this one locking member 112 of the assembled cover component 14, the inner end portion 194 of the inner bent locking piece 163 is in the middle portion 192, and the inner end portion 194 of the locking member 112 of the cover component 14 in the assembled state is connected to the end edge portion 105 of the groove 101 to be engaged. come into contact with The same applies to the other locking member 112 of the cover component 14 in the assembled state.

Further, one of the locking members 112 of the cover component 14 in the assembled state has an inner bent locking piece 164 extending from its fixing portion 161 to one of the cylinder holes in which the position of the locking member 112 in the disk circumferential direction matches. It extends in the axial direction of 71 so as to approach this cylinder hole 71 . In the one locking member 112 of the assembled cover component 14, the inner end portion 194 of the inner bent locking piece 164 is bent inward in the radial direction of the one cylinder hole 71. In this one locking member 112 of the assembled cover part 14, the inner end portion 194 of the inner bent locking piece 164 is in the middle portion 192, and the inner end portion 194 of the locking member 112 of the cover component 14 in the assembled state is connected to the end edge portion 105 of the groove 101 to be engaged. come into contact with The same applies to the other locking member 112 of the cover component 14 in the assembled state.

Further, one of the locking members 112 of the cover component 14 in the assembled state has an inner bent locking piece 165 extending from its fixed portion 161 to one of the cylinder holes in which the position of the locking member 112 in the disk circumferential direction matches. It extends in the axial direction of 71 so as to approach this cylinder hole 71 . In the one locking member 112 of the assembled cover component 14, the inner tip 194 of the inner bent locking piece 165 is bent inward in the radial direction of the one cylinder hole 71. In this one locking member 112 of the assembled cover part 14, the inner end portion 194 of the inner bent locking piece 165 is connected to the edge portion 105 of the groove 101 to be engaged at the intermediate portion 192. come into contact with The same applies to the other locking member 112 of the cover component 14 in the assembled state.

In addition, one of the locking members 112 of the cover component 14 in the assembled state has an outer bent locking piece 166 extending from its fixing portion 161 to one of the cylinder holes in which the position of the locking member 112 in the disk circumferential direction matches. It extends in the axial direction of 71 so as to approach this cylinder hole 71 . In the one locking member 112 of the assembled cover component 14, the outer tip 204 of the outer bent locking piece 166 is bent radially outward of the one cylinder hole 71. In this one locking member 112 of the assembled cover part 14, the outer tip 204 of the outer bent locking piece 166 touches the wall surface 103 of the groove 101 to be engaged at the tip edge 205. come into contact with The same applies to the other locking member 112 of the cover component 14 in the assembled state.

Further, one of the locking members 112 of the cover component 14 in the assembled state has an outer bent locking piece 167 extending from its fixing portion 161 to one of the cylinder holes in which the position of the locking member 112 in the disk circumferential direction matches. It extends in the axial direction of 71 so as to approach this cylinder hole 71 . In the one locking member 112 of the assembled cover component 14, the outer tip 204 of the outer bent locking piece 167 is bent radially outward of the one cylinder hole 71. In this one locking member 112 of the assembled cover part 14, the outer tip 204 of the outer bent locking piece 167 touches the wall surface 103 of the groove 101 to which it is engaged at the tip edge 205. come into contact with The same applies to the other locking member 112 of the cover component 14 in the assembled state.

Further, as shown in FIG. 4, one of the locking members 112 of the cover part 14 in the assembled state has a first axis A1 that connects the center part of the fixing part 161 and the bridge part 56. When the second axis A2 is an axis that is perpendicular to the first axis A1, perpendicular to the disk axial direction, and passes through the center of the fixing portion 161, the outer bent locking piece 166 and The outer bent locking piece 167 is arranged to sandwich the first axis A1 from each other, and when viewed from the direction of the second axis A2, the outer bent locking piece 166 and the outer bent locking piece 167 are arranged on both sides of the first axis A1. are arranged so as to overlap each other. The same applies to the other locking member 112 of the cover component 14 in the assembled state.

Further, in one of the locking members 112 of the cover component 14 in the assembled state, when viewed from the disk axial direction, the inner bent locking piece 162 and the inner bent locking piece 163 are aligned with each other along the first axis A1. The inner bent locking piece 162 and the inner bent locking piece 163 are arranged so as to overlap each other when viewed from the direction of the second axis A2. The same applies to the other locking member 112 of the cover component 14 in the assembled state.

Further, in one of the locking members 112 of the cover component 14 in the assembled state, when viewed from the disk axial direction, the inner bent locking piece 164 and the inner bent locking piece 165 are aligned with each other along the first axis A1. The inner bent locking piece 164 and the inner bent locking piece 165 are arranged so as to overlap each other when viewed from the direction of the second axis A2. The same applies to the other locking member 112 of the cover component 14 in the assembled state.

Furthermore, when one of the locking members 112 of the cover component 14 in the assembled state is viewed from the disk axial direction, the outer bent locking piece 166 and the outer bent locking piece 167 are aligned with the first axis A1. The inner bent locking piece 162 and the inner bent locking piece 163 are arranged closer to the bridge part 56 than the center of the fixing part 161 in the direction of the first axis A1 when viewed from the disk axis direction. It is arranged on the opposite side of the bridge part 56 from the central part of the fixing part 161. The same applies to the other locking member 112 of the cover component 14 in the assembled state.

Further, in one of the locking members 112 of the cover component 14 in the assembled state, in the circumferential direction of the fixing portion 161, the outer bent locking piece 166 is connected to the inner bent locking piece 162, and the inner bent locking piece 162 is The outer bent locking piece 167 is arranged between the inner bent locking piece 163 and the inner bent locking piece 165. The same applies to the other locking member 112 of the cover component 14 in the assembled state.

Moreover, one of the locking members 112 of the cover component 14 in the assembled state has an inner bent locking piece 164, an outer bent locking piece 166, and an inner bent locking piece 164 when viewed from the disk axial direction. The piece 165 and its outer bent locking piece 167 are arranged closer to the bridge portion 56 than the central part of the fixing part 161 in the direction of the first axis A1, and the inner bent locking piece 165 is arranged on the side of the bridge part 56 from the center of the fixing part 161 in the direction of the first axis A1. The piece 162 and its inner bent locking piece 163 are arranged on the opposite side of the bridge part 56 from the center of the fixing part 161 in the direction of the first axis A1.

Further, the plate member 111 of the cover component 14 in the assembled state includes a pair of protrusions 124 that extend from the main plate portion 121 in the axial direction of the cylinder hole 71 so as to approach the cylinder hole 71. One of the locking members 112 of the cover component 14 in the assembled state is provided with a plurality of guide locking pieces 178 on the center side of its fixing portion 161, which abut against the outer circumferential surface 150 of the corresponding protrusion 124. . The same applies to the other locking member 112 of the cover component 14 in the assembled state.

In addition, in the assembled cover part 14, the plurality of inner bent locking pieces 162 to 165 and the plurality of outer bent locking pieces 166, 167 of one locking member 112 extend from the fixed part 161 to the cylinder hole 71. In other words, it extends in the axial direction of the piston 72 , in other words, in a direction inclined with respect to the moving direction of the piston 72 . The same applies to the other locking member 112 of the cover component 14 in the assembled state.

Further, in the assembled state, the cover part 14 has a plurality of inner bent locking pieces 162 to 165 and a plurality of outer bent locking pieces 166 and 167 of one locking member 112 in the recessed portion to which they are engaged. It comes into contact with the inner peripheral surface 91 of 81 with elastic force. In other words, in the assembled state, the cover component 14 has a plurality of inner bent locking pieces 162 to 165 and a plurality of outer bent locking pieces 166 and 167 of one locking member 112. It is provided in the recessed portion 81 to be engaged. The same applies to the other locking member 112 of the cover component 14 in the assembled state. Therefore, in the caliper 13 with the cover component 14 assembled, a locking member 112 is disposed in each of the two recesses 81.

Further, in the assembled state, the cover part 14 has a plurality of inner bent locking pieces 162 to 165 and a plurality of outer bent locking pieces 166 and 167 of one locking member 112 in the recessed portion to which they are engaged. It abuts on the groove 101 of 81. The same applies to the other locking member 112 of the cover component 14 in the assembled state.

Further, in the assembled cover component 14, the plate member 111 contacts the bridge portion 56 at a position outward in the disk radial direction from the protruding portion 124 to which the locking member 112 is fixed.

Brake fluid is introduced into the disc brake 10 into two cylinder holes 71 of the cylinder portion 55 of the caliper 13 via brake piping (not shown). Then, brake fluid pressure acts on the piston 72 in each of the two cylinder holes 71. As a result, both pistons 72 move forward toward the disk 11 and press the inner friction pad 17 of the friction pads 17 and 18, which is disposed between these pistons 72 and the disk 11, toward the disk 11. do. This causes the friction pad 17 to move in the disk axial direction and come into contact with the surface 11a of the disk 11. In other words, the piston 72 for moving the inner friction pad 17 of the friction pads 17 and 18 is disposed in the cylinder hole 71 of the cylinder portion 55 .

Further, due to the reaction force of this pressing, the caliper body 51 slides the slide pin 47 with respect to the mounting member 12 and moves in the disk axial direction, and the claw portion 57 connects the friction pad 17, 18 with the disk. 11 on the outer side is pressed toward the disk 11. As a result, this friction pad 18 moves in the disk axial direction and comes into contact with the surface 11b of the disk 11.

In this manner, the caliper 13, by the operation of the plurality of pistons 72, holds the friction pads 17, 18 from both sides between the pistons 72 and the claw portion 57, and presses them against both surfaces 11a, 11b of the disk 11. As a result, the caliper 13 applies frictional resistance to the disc 11 to generate braking force. The caliper 13 is a floating type caliper, and is a fist type caliper.

In the disc brake described in Patent Document 1, a cover component is attached to a portion of the caliper that is visible when viewed from the outside of the vehicle. It is desired to improve the adhesion of such a cover component to a caliper and to suppress falling of the cover component from the caliper.

The disc brake 10 and cover component 14 of the embodiment include a locking member 112 that fixes to the caliper 13 a plate member 111 that covers the recessed portion 81 from the side opposite to the cylinder portion 55 in the axial direction of the cylinder hole 71. There is. The locking member 112 includes, for example, an inner bent locking piece 162 and an outer bent locking piece 166, both of which extend in the axial direction of the cylinder hole 71 from a fixed portion 161 fixed to the plate member 111. have. The inner bent locking piece 162 has an inner tip 194 bent inward in the radial direction of the cylinder hole 71 that contacts the groove 101 of the inner circumferential surface 91 of the recessed part 81, and the outer bent locking piece 166 The outer tip portion 204 of the cylinder hole 71 that is bent radially outward comes into contact with the groove 101 of the inner circumferential surface 91 of the recess portion 81 . In this way, the inner bent locking piece 162 has an inner tip 194 bent inward in the radial direction of the cylinder hole 71 that contacts the groove 101 of the inner circumferential surface 91 of the recessed portion 81, so that the locking member 112 Movement of the cylinder hole 71 in the radial direction can be suppressed. In addition, the outer bent locking piece 166 has an outer tip 204 bent radially outward of the cylinder hole 71 that contacts the groove 101 of the inner circumferential surface 91 of the recessed portion 81, so that Movement of the hole 71 in the axial direction to the side opposite to the cylinder portion 55, that is, coming out of the recess portion 81 can be suppressed. Therefore, it is possible to improve the adhesion of the cover component 14 to the caliper 13 and to suppress falling of the cover component 14 from the caliper 13.

In addition, since the inner bent locking piece 162 and the outer bent locking piece 166 are elastically deformable, the inner bent locking piece 162 and the outer bent locking piece 166 are elastically deformed to fit into the recessed portion 81. Once fitted, the cover component 14 can be assembled to the caliper 13. Therefore, it becomes easy to assemble the cover component 14 to the caliper 13. Furthermore, since the cover component 14 can be attached to the caliper 13 without using attachment bolts or rivets, the attachment is easy and the appearance is excellent.

In addition to the outer bent locking piece 166, the locking member 112 further includes an outer bent locking piece 167 that extends in the axial direction of the cylinder hole 71 from the fixing part 161 fixed to the plate member 111. have. The outer end portion 204 of this outer bent locking piece 167 is also bent toward the outer side in the radial direction of the cylinder hole 71 and comes into contact with the groove 101 in the inner circumferential surface 91 of the recessed portion 81 . Therefore, each of the two outer bent locking pieces 166 and 167 abuts on the groove 101 of the inner circumferential surface 91 of the recessed portion 81 at the outer tip portion 204 bent radially outward of the cylinder hole 71. Movement of the locking member 112 in the axial direction of the cylinder hole 71 to the side opposite to the cylinder portion 55, that is, coming out of the recess portion 81 can be further suppressed. Therefore, falling off of the cover component 14 from the caliper 13 can be further suppressed.

Furthermore, when viewed from the disk axial direction, the outer bent locking piece 166 and the outer bent locking piece 167 of the locking member 112 are arranged with the first axis A1 in between, and from the direction of the second axis A2. As seen, the outer bent locking piece 166 and the outer bent locking piece 167 are arranged so as to overlap each other. Therefore, since the outer bent locking piece 166 and the outer bent locking piece 167 can be arranged apart from each other, movement of the locking member 112 in the axial direction of the cylinder hole 71 to the side opposite to the cylinder part 55 is prevented. In other words, coming out of the recessed portion 81 can be further suppressed. Therefore, falling off of the cover component 14 from the caliper 13 can be further suppressed.

In addition to the inner bent locking piece 162, the locking member 112 further includes an inner bent locking piece 163 that extends in the axial direction of the cylinder hole 71 from a fixing portion 161 fixed to the plate member 111. have. The inner end portion 194 of this inner bent locking piece 163 is also bent inward in the radial direction of the cylinder hole 71 and comes into contact with the groove 101 in the inner circumferential surface 91 of the recessed portion 81 . Therefore, each of the two inner bent locking pieces 162 and 163 abuts on the groove 101 of the inner circumferential surface 91 of the recessed portion 81 at the inner tip portion 194 bent inward in the radial direction of the cylinder hole 71. Movement of the locking member 112 in the radial direction of the cylinder hole 71 can be further suppressed. Moreover, when viewed from the disk axial direction, the inner bent locking piece 162 and the inner bent locking piece 163 of the locking member 112 are arranged with the first axis A1 in between, and from the direction of the second axis A2. As seen, the inner bent locking piece 162 and the inner bent locking piece 163 are arranged so as to overlap each other. Therefore, since the inner bent locking piece 162 and the inner bent locking piece 163 can be arranged apart from each other, movement of the locking member 112 in the radial direction of the cylinder hole 71 can be further suppressed. Therefore, the adhesion of the cover component 14 to the caliper 13 can be further improved.

In addition, in the locking member 112, when viewed from the disk axial direction, the outer bent locking piece 166 and the outer bent locking piece 167 extend from the center of the fixed portion 161 to the bridge portion 56 in the direction of the first axis A1. The inner bent locking piece 162 and the inner bent locking piece 163 are arranged on the side opposite to the bridge part 56 from the center of the fixing part 161 in the direction of the first axis A1 when viewed from the disk axial direction. It is located. Thereby, the inner bent locking piece 162 and the inner bent locking piece 163 can urge the locking member 112 toward the bridge portion 56 side of the recessed portion 81, that is, toward the bottom side of the recessed portion 81. . Therefore, the adhesion of the cover component 14 to the caliper 13 can be further improved.

In addition to the inner bent locking piece 162, the locking member 112 further includes an inner bent locking piece 164 that extends in the axial direction of the cylinder hole 71 from a fixing portion 161 fixed to the plate member 111. have. The inner end portion 194 of this inner bent locking piece 164 is also bent inward in the radial direction of the cylinder hole 71 and comes into contact with the groove 101 in the inner circumferential surface 91 of the recessed portion 81 . Therefore, each of the two inner bent locking pieces 162 and 164 abuts on the groove 101 of the inner circumferential surface 91 of the recessed portion 81 at the inner tip portion 194 bent inward in the radial direction of the cylinder hole 71. Movement of the locking member 112 in the radial direction of the cylinder hole 71 can be further suppressed. Therefore, the adhesion of the cover component 14 to the caliper 13 can be further improved.

Further, in the locking member 112, when viewed from the disk axial direction, the inner bent locking piece 162 is arranged on the opposite side of the bridge portion 56 from the center of the locking member 112 in the direction of the first axis A1. Thereby, the inner bent locking piece 162 can bias the locking member 112 toward the bridge portion 56 side of the recessed portion 81, that is, toward the bottom side of the recessed portion 81. Therefore, the adhesion of the cover component 14 to the caliper 13 can be further improved.

Furthermore, in the locking member 112 , the outer bent locking piece 166 is arranged between the inner bent locking piece 162 and the inner bent locking piece 164 in the circumferential direction of the fixing portion 161 . Therefore, since the inner bent locking piece 162 and the inner bent locking piece 164 can be separated from each other in the circumferential direction of the fixing portion 161, movement of the locking member 112 in the radial direction of the cylinder hole 71 is further suppressed. be able to. Therefore, the adhesion of the cover component to the caliper can be further improved.

In addition, in the locking member 112, when viewed from the disk axial direction, the inner bent locking piece 164 and the outer bent locking piece 166 extend from the center of the fixing part 161 to the bridge part 56 in the direction of the first axis A1. When viewed from the disk axial direction, the inner bent locking piece 162 is arranged on the opposite side of the bridge portion 56 from the center of the fixing portion 161 in the direction of the first axis A1. As a result, the inner bent locking pieces 162 and 164 are separated in the direction of the first axis A1, and then the inner bent locking pieces 162, 164 and the outer bent locking pieces 166 are separated from each other in the direction of the first axis A1. can be arranged in a well-balanced manner. Therefore, movement of the locking member 112 in the radial direction of the cylinder hole 71 can be further suppressed. Therefore, the adhesion of the cover component to the caliper can be further improved.

Further, the plate member 111 includes a protrusion 124 extending in the axial direction of the cylinder hole 71, and the locking member 112 includes a plurality of guides on the center side of the fixing part 161 that abut against the outer circumferential surface 150 of the protrusion 124. A locking piece 178 is provided. Therefore, when attaching the fixing portion 161 of the locking member 112 to the projection 124 of the plate member 111, the plurality of guide locking pieces 178 can be guided by the outer peripheral surface 150 of the projection 124. Therefore, attachment of the locking member 112 to the plate member 111 becomes easy. In addition, since the protruding portion 124 contacts the plurality of guide locking pieces 178 on the outer circumferential surface 150, movement of the cylinder hole 71 in the radial direction with respect to the locking member 112 of the plate member 111 can be suppressed. In addition, since the locking member 112 is provided with a plurality of guide locking pieces 178 on the center side of the fixing part 161, the inner bent locking piece 162 and the outer bent locking piece 166 are attached to the fixing part 161. It can be formed on the opposite side from the center. Therefore, manufacturing of the locking member 112 becomes easy.

Further, the plate member 111 includes two protrusions 124 , and the two locking members 112 have a plurality of guide locking pieces 178 provided in each of the two locking members 112 in contact with the outer circumferential surface 150 of the corresponding protrusion 124 . It is attached to the plate member 111. Therefore, the accuracy of the attachment positions of the two locking members 112 can be increased. Therefore, the locking members 112 can be fitted smoothly and favorably into the respective inner peripheral surfaces 91 of the two recesses 81 provided in the caliper 13. That is, if the two locking members 112 are attached to the plate member 111 with deviations from each other, a larger force than expected may be required when fitting the locking members 112 into the inner circumferential surface 91 of the recessed portion 81, or the locking members 112 may However, these situations can be avoided.

The disc brake of the first aspect of the embodiment described above is
a mounting member (e.g., mounting member 12) fixed to a non-rotating part of the vehicle and provided across the outer circumferential side of a disc (e.g., disc 11);
a first friction pad (for example, friction pad 17) that is movably provided on the mounting member and is arranged to face one surface (for example, surface 11a) of the disk in the axial direction;
a second friction pad (for example, friction pad 18) that is movably provided on the mounting member and is arranged to face the other surface (for example, surface 11b) of the disk in the axial direction;
a piston (e.g. piston 72) that presses the first friction pad;
A caliper (for example, caliper 13) that accommodates the piston movably in the axial direction of the disk,
a cylinder portion (for example, cylinder portion 55) having a cylinder hole (for example, cylinder hole 71) in which the piston is accommodated;
a bridge portion (for example, bridge portion 56) provided from the cylinder portion to the outer peripheral side of the disk;
a claw part (for example, a claw part 57) provided from the bridge part to face the cylinder part in the axial direction of the cylinder hole;
a recessed portion (e.g., recessed portion 81) provided in the claw portion facing the cylinder hole and having a groove (e.g., groove 101) on an inner circumferential surface (e.g., inner circumferential surface 91);
a caliper having a
a plate member (for example, plate member 111) that covers the recessed portion from the axial direction of the cylinder hole;
A locking member (for example, locking member 112) that fixes the plate member to the caliper,
a fixing part (for example, fixing part 161) fixed to the plate member;
a first inner bending lock in which a first inner tip (for example, an inner tip 194) extending from the fixing part in the axial direction of the cylinder hole and bent inward in the radial direction of the cylinder hole abuts the groove; piece (for example, inner bent locking piece 162);
a first outer bending lock in which a first outer tip (for example, an outer tip 204) extending from the fixing part in the axial direction of the cylinder hole and bent toward the outside in the radial direction of the cylinder hole comes into contact with the groove; piece (e.g., outer bent locking piece 166);
a locking member having;
Equipped with
Thereby, it is possible to improve the adhesion of the cover component to the caliper and to suppress falling of the cover component from the caliper.

The disc brake of the second aspect includes, in the first aspect,
The locking member extends from the fixing portion in the axial direction of the cylinder hole, and has a second outer tip portion (for example, outer tip portion 204) bent radially outward of the cylinder hole that contacts the groove. Two outer bent locking pieces (for example, outer bent locking pieces 167) are provided.

The disc brake according to the third aspect includes, in the second aspect,
An axis connecting the central part of the fixing part and the bridge part is a first axis (for example, a first axis A1), which is perpendicular to the first axis and perpendicular to the axial direction of the disk, and the fixing part When the axis passing through the center of is the second axis (for example, the second axis A2),
When viewed from the axial direction of the disk, the first outer bent locking piece and the second outer bent locking piece are arranged to sandwich the first axis,
When viewed from the direction of the second axis, the first outer bent locking piece and the second outer bent locking piece are arranged to overlap with each other.

The disc brake according to the fourth aspect includes, in the third aspect,
The locking member extends from the fixing portion in the axial direction of the cylinder hole, and has a second inner tip portion (for example, an inner tip portion 194) bent inward in the radial direction of the cylinder hole that contacts the groove. 2 inner bent locking pieces (for example, inner bent locking pieces 163);
When viewed from the axial direction of the disk, the first inner bent locking piece and the second inner bent locking piece are arranged to sandwich the first axis,
When viewed from the direction of the second axis, the first inner bent locking piece and the second inner bent locking piece are arranged to overlap with each other.

The disc brake according to the fifth aspect includes, in the fourth aspect,
When viewed from the axial direction of the disk, the first outer bent locking piece and the second outer bent locking piece are located closer to the bridge portion than the center portion of the fixing portion in the direction of the first axis. placed,
When viewed from the axial direction of the disk, the first inner bent locking piece and the second inner bent locking piece are located on the opposite side of the bridge portion from the center of the fixing portion in the direction of the first axis. It is located in

The disc brake according to the sixth aspect includes, in the second aspect,
The locking member extends from the fixing portion in the axial direction of the cylinder hole, and has a second inner tip portion (for example, an inner tip portion 194) bent inward in the radial direction of the cylinder hole that contacts the groove. Two inner bent locking pieces (for example, inner bent locking pieces 163) are provided.

The disc brake according to the seventh aspect includes, in the first aspect,
An axis connecting the central part of the fixing part and the bridge part is a first axis (for example, a first axis A1), which is perpendicular to the first axis and perpendicular to the axial direction of the disk, and the fixing part When the axis passing through the center of is the second axis (for example, the second axis A2),
When viewed from the axial direction of the disk, the first inner bent locking piece is disposed on the opposite side of the bridge portion from the center of the locking member in the direction of the first axis.

The disc brake according to the eighth aspect includes, in the first aspect,
The locking member extends from the fixing portion in the axial direction of the cylinder hole, and has a second inner tip portion (for example, an inner tip portion 194) bent inward in the radial direction of the cylinder hole that contacts the groove. Two inner bent locking pieces (for example, inner bent locking pieces 164) are provided.

The disc brake according to the ninth aspect includes, in the eighth aspect,
In the circumferential direction of the fixed portion, the first outer bent locking piece is arranged between the first inner bent locking piece and the second inner bent locking piece.

The disc brake according to the tenth aspect includes, in the ninth aspect,
An axis connecting the central part of the fixing part and the bridge part is a first axis (for example, a first axis A1), which is perpendicular to the first axis and perpendicular to the axial direction of the disk, and the fixing part When the axis passing through the center of is the second axis (for example, the second axis A2),
When viewed from the axial direction of the disk, the second inner bent locking piece and the first outer bent locking piece are located closer to the bridge part than the center part of the fixing part in the direction of the first axis. placed,
When viewed from the axial direction of the disk, the first inner bent locking piece is disposed on the opposite side of the bridge portion from the center of the fixing portion in the direction of the first axis.

The disc brake according to the eleventh aspect includes, in the first aspect,
The plate member includes a protrusion (e.g. protrusion 124) extending in the axial direction of the cylinder hole,
A plurality of guide locking pieces (for example, guide locking pieces 178) that come into contact with the outer circumferential surface (for example, the outer circumferential surface 150) of the protrusion are provided on the center side of the fixed part.

The cover component of the twelfth aspect is
a mounting member (e.g., mounting member 12) fixed to a non-rotating part of the vehicle and provided across the outer circumferential side of a disc (e.g., disc 11);
a first friction pad (for example, friction pad 17) that is movably provided on the mounting member and is arranged to face one surface (for example, surface 11a) of the disk in the axial direction;
a second friction pad (for example, friction pad 18) that is movably provided on the mounting member and is arranged to face the other surface (for example, surface 11b) of the disk in the axial direction;
a piston (e.g. piston 72) that presses the first friction pad;
A caliper (for example, caliper 13) that accommodates the piston movably in the axial direction of the disk,
a cylinder portion (for example, cylinder portion 55) having a cylinder hole (for example, cylinder hole 71) in which the piston is accommodated;
a bridge portion (for example, bridge portion 56) provided from the cylinder portion to the outer peripheral side of the disk;
a claw part (for example, a claw part 57) provided from the bridge part to face the cylinder part in the axial direction of the cylinder hole;
a recessed portion (e.g., recessed portion 81) provided in the claw portion facing the cylinder hole and having a groove (e.g., groove 101) on an inner circumferential surface (e.g., inner circumferential surface 91);
a caliper having a
A cover part constituting a disc brake comprising:
The cover part is
a plate member (for example, plate member 111) that covers the recessed portion from the axial direction of the cylinder hole;
A locking member (for example, locking member 112) for fixing the plate member to the caliper,
a fixing part (for example, fixing part 161) fixed to the plate member;
a first inner bending lock in which a first inner tip (for example, an inner tip 194) extending from the fixing part in the axial direction of the cylinder hole and bent inward in the radial direction of the cylinder hole abuts the groove; piece (for example, inner bent locking piece 162);
a first outer bending lock in which a first outer tip (for example, an outer tip 204) extending from the fixing part in the axial direction of the cylinder hole and bent toward the outside in the radial direction of the cylinder hole comes into contact with the groove; a piece (for example, the outer bent locking piece 166);
a locking member having;
Equipped with
Thereby, it is possible to improve the adhesion of the cover component to the caliper and to suppress falling of the cover component from the caliper.

10 Disc brake 11 Disc 11a, 11b surface 12 Mounting member 13 Caliper 14 Cover parts 17, 18 Friction pad 55 Cylinder part 56 Bridge part 57 Claw part 71 Cylinder hole 72 Piston 72
81 Recessed portion 91 Inner peripheral surface 101 Groove 111 Plate member 112 Locking member 124 Projection portion 150 Outer peripheral surface 161 Fixed portion 162 to 165 Inner bent locking piece 166, 167 Outer bent locking piece 178 Guide locking piece 194 Inner tip 204 Outer tip A1 First axis A2 Second axis

Claims (12)

a mounting member fixed to a non-rotating part of the vehicle and provided across the outer circumferential side of the disc;
a first friction pad movably provided on the mounting member and disposed opposite to one surface of the disk in the axial direction;
a second friction pad movably provided on the mounting member and disposed opposite the other surface of the disk in the axial direction;
a piston that presses the first friction pad;
A caliper in which the piston is movably accommodated in the axial direction of the disk,
a cylinder portion having a cylinder hole in which the piston is accommodated;
a bridge portion provided across the outer peripheral side of the disk from the cylinder portion;
a claw portion provided from the bridge portion to face the cylinder portion in the axial direction of the cylinder hole;
a recessed portion provided in the claw portion facing the cylinder hole and having a groove on an inner circumferential surface;
a caliper having a
a plate member that covers the recessed portion from the axial direction of the cylinder hole;
A locking member for fixing the plate member to the caliper,
a fixing part fixed to the plate member;
a first inner bent locking piece that extends from the fixing part in the axial direction of the cylinder hole, and has a first inner tip bent inward in the radial direction of the cylinder hole and abuts on the groove;
a first outer bent locking piece that extends from the fixing part in the axial direction of the cylinder hole, and has a first outer tip that is bent radially outward of the cylinder hole and comes into contact with the groove;
a locking member having;
Equipped with disc brakes. The disc brake according to claim 1,
The locking member is a second outer bent locking piece that extends from the fixing part in the axial direction of the cylinder hole, and has a second outer tip bent radially outward of the cylinder hole and abuts on the groove. Equipped with
disc brake. The disc brake according to claim 2,
An axis connecting the central part of the fixed part and the bridge part is a first axis, and an axis that is perpendicular to the first axis, perpendicular to the axial direction of the disk, and passes through the central part of the fixed part. When the second axis is set,
When viewed from the axial direction of the disk, the first outer bent locking piece and the second outer bent locking piece are arranged to sandwich the first axis,
and, when viewed from the direction of the second axis, the first outer bending locking piece and the second outer bending locking piece are arranged to overlap with each other;
disc brake. The disc brake according to claim 3,
The locking member is a second inner bent locking piece that extends from the fixing part in the axial direction of the cylinder hole, and has a second inner tip bent inward in the radial direction of the cylinder hole and abuts on the groove. Equipped with
When viewed from the axial direction of the disk, the first inner bent locking piece and the second inner bent locking piece are arranged to sandwich the first axis,
and when viewed from the direction of the second axis, the first inner bent locking piece and the second inner bent locking piece are arranged to overlap with each other,
disc brake. The disc brake according to claim 4,
When viewed from the axial direction of the disk, the first outer bent locking piece and the second outer bent locking piece are located closer to the bridge portion than the center portion of the fixing portion in the direction of the first axis. placed,
When viewed from the axial direction of the disk, the first inner bent locking piece and the second inner bent locking piece are located on the opposite side of the bridge portion from the center of the fixing portion in the direction of the first axis. located in
disc brake. The disc brake according to claim 2,
The locking member is a second inner bent locking piece that extends from the fixing part in the axial direction of the cylinder hole, and has a second inner tip bent inward in the radial direction of the cylinder hole and abuts on the groove. Equipped with
disc brake. The disc brake according to claim 1,
An axis connecting the central part of the fixed part and the bridge part is a first axis, and an axis that is perpendicular to the first axis, perpendicular to the axial direction of the disk, and passes through the central part of the fixed part. When the second axis is set,
When viewed from the axial direction of the disk, the first inner bent locking piece is disposed on the opposite side of the bridge portion from the center of the locking member in the direction of the first axis.
disc brake. The disc brake according to claim 1,
The locking member is a second inner bent locking piece that extends from the fixing part in the axial direction of the cylinder hole, and has a second inner tip bent inward in the radial direction of the cylinder hole and abuts on the groove. Equipped with
disc brake. The disc brake according to claim 8,
In the circumferential direction of the fixed portion, the first outer bent locking piece is disposed between the first inner bent locking piece and the second inner bent locking piece.
disc brake. The disc brake according to claim 9,
An axis connecting the central part of the fixed part and the bridge part is a first axis, and an axis that is perpendicular to the first axis, perpendicular to the axial direction of the disk, and passes through the central part of the fixed part. When the second axis is set,
When viewed from the axial direction of the disk, the second inner bent locking piece and the first outer bent locking piece are located closer to the bridge part than the center part of the fixing part in the direction of the first axis. placed,
When viewed from the axial direction of the disk, the first inner bent locking piece is disposed on the opposite side of the bridge portion from the center of the fixing portion in the direction of the first axis.
disc brake. The disc brake according to claim 1,
The plate member includes a protrusion extending in the axial direction of the cylinder hole,
A plurality of guide locking pieces are provided on the center side of the fixing part, the guide locking pieces coming into contact with the outer circumferential surface of the protruding part.
disc brake. a mounting member fixed to a non-rotating part of the vehicle and provided across the outer circumferential side of the disc;
a first friction pad movably provided on the mounting member and disposed opposite to one surface of the disk in the axial direction;
a second friction pad movably provided on the mounting member and disposed opposite the other surface of the disk in the axial direction;
a piston that presses the first friction pad;
A caliper in which the piston is movably accommodated in the axial direction of the disk,
a cylinder portion having a cylinder hole in which the piston is accommodated;
a bridge portion provided across the outer peripheral side of the disk from the cylinder portion;
a claw portion provided from the bridge portion to face the cylinder portion in the axial direction of the cylinder hole;
a recessed portion provided in the claw portion facing the cylinder hole and having a groove on an inner circumferential surface;
a caliper having a
A cover part constituting a disc brake comprising:
The cover part is
a plate member that covers the recessed portion from the axial direction of the cylinder hole;
A locking member for fixing the plate member to the caliper,
a fixing part fixed to the plate member;
a first inner bent locking piece that extends from the fixing part in the axial direction of the cylinder hole, and has a first inner tip bent inward in the radial direction of the cylinder hole and abuts on the groove;
a first outer bent locking piece that extends from the fixing part in the axial direction of the cylinder hole, and has a first outer tip that is bent radially outward of the cylinder hole and comes into contact with the groove;
a locking member having;
A cover part comprising:

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