JP7361453B2 - disc brake - Google Patents

Description

The present invention relates to a disc brake.

Some disc brakes have a pad spring that elastically supports a pad (see, for example, Patent Documents 1 and 2).

JP2015-28376A JP 2017-150589 Publication

In disc brakes, it is desired to improve the ease of assembling pads.

An object of the present invention is to provide a disc brake that can improve the ease of assembling pads.

In order to achieve the above object, the present invention provides a guide plate portion of a pad spring that is provided at a position opposite to the bottom surface on the back side of the guide recess of the mounting member in the rotational direction of the disk ; an extending plate portion extending from a side of the opposing plate portion opposite to the disk in the axial direction of the disk, and the extending plate portion is configured to: A configuration in which a plurality of the extending plate parts extending vertically in a direction away from the ear part of the pad are arranged in line on the outer circumferential side and the inner circumferential side of the opposing plate part in the radial direction of the disk. And so.

According to the present invention, it is possible to improve the ease of assembling the pad.

FIG. 1 is a plan view showing the disc brake of the first embodiment. FIG. 1 is a front view showing the disc brake of the first embodiment. FIG. 2 is a rear view showing the disc brake of the first embodiment. FIG. 1 is a side view showing the disc brake of the first embodiment. FIG. 3 is a perspective view showing a pad spring and a pad of the disc brake according to the first embodiment. 1 shows a pad spring of a disc brake according to a first embodiment, in which (a) is a perspective view as seen from the front side, and (b) is a perspective view as seen from the back side. It shows the pad spring of the disc brake of 1st Embodiment, (a) is a top view, (b) is a front view. FIG. 7 shows a pad spring of a disc brake according to a second embodiment, in which (a) is a perspective view as seen from the front side, and (b) is a perspective view as seen from the back side. It shows the pad spring of the disc brake of 2nd Embodiment, (a) is a top view, (b) is a front view. FIG. 3 is a plan view showing a disc brake according to a second embodiment. FIG. 7 is a perspective view showing a pad spring and a pad of a disc brake according to a second embodiment. FIG. 7 shows a pad spring of a disc brake according to a third embodiment, in which (a) is a perspective view as seen from the front side, and (b) is a perspective view as seen from the back side. It shows the pad spring of the disc brake of 3rd Embodiment, (a) is a top view, (b) is a front view. FIG. 7 is a plan view showing a disc brake according to a third embodiment. FIG. 7 is a perspective view showing a pad spring and a pad of a disc brake according to a third embodiment.

"First embodiment"
A first embodiment according to the present invention will be described below with reference to FIGS. 1 to 7.

The disc brake 10 of the first embodiment is for use in a vehicle such as an automobile 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 1 that rotates together with wheels (not shown).

Hereinafter, the direction of the central axis of the disk 1 will be referred to as the disk axial direction, the radial direction of the disk 1 will be referred to as the disk radial direction, and the rotational direction, that is, the circumferential direction, of the disk 1 will be referred to as the disk rotation direction. Further, the center side of the disk 1 in the disk radial direction is called the inner side in the disk radial direction, and the side opposite to the center of the disk 1 in the disk radial direction is called the outer side in the disk radial direction.

The disc brake 10 has a mounting member 2 as shown in FIGS. 1 to 4, and a pair of pads 3 as shown in FIGS. 2 to 5. Further, the disc brake 10 has a caliper 5 as shown in FIGS. 1 to 4, and a pair of pad springs 7 as shown in FIGS. 1 to 3 and 5.

The mounting member 2 includes an inner beam part 11 and a pair of inner torque receivers 12 shown in FIGS. 2 and 3, a pair of pin insertion parts 13 shown in FIG. 1, and a pair of outer torque receivers shown in FIG. It has a section 14 and an outer beam section 15. The mounting member 2 is integrally formed by casting, and has a mirror-symmetrical shape with respect to the center in the rotational direction of the disk. The mounting member 2 is made of cast iron, for example.

As shown in FIG. 4, the inner beam portion 11 is disposed on one side of the disk 1 in the disk axial direction and is attached to a non-rotating portion of the vehicle. Here, the non-rotating part of the vehicle to which the mounting member 2 is attached is disposed on the inner side of the vehicle in the vehicle width direction with respect to the disc 1, and the inner beam part 11 attached to this non-rotating part is also located on the disc 1. It is placed on the inner side.

As shown in FIG. 3, the inner beam portion 11 is arranged to extend in the disk rotation direction, and has mounting holes 17 on both sides in the disk rotation direction, that is, on one side in the disk rotation direction and on the other side in the disk rotation direction. It is formed. The inner beam portion 11 is attached to a non-rotating portion of the vehicle by screwing fastening members such as bolts (not shown) into mounting holes 17 on both sides, respectively.

The pair of inner torque receiving parts 12 is such that one inner torque receiving part 12 is connected to the end of the inner beam part 11 on one side in the disk rotation direction, and the other inner torque receiving part 12 is connected to the end of the inner beam part 11 in the disk rotation direction. They each extend outward in the disk radial direction from the end on the other side in the disk rotation direction. As shown in FIG. 4, the pair of inner torque receiving parts 12 are arranged on the inner side with respect to the disk 1, like the inner beam part 11.

As shown in FIG. 1, one pin insertion part 13 extends from the outer end in the disk radial direction of the inner torque receiving part 12 on one side in the disk rotation direction in the disk axial direction. It extends across the outer circumferential side of the disk 1. Further, the other pin insertion portion 13 extends from the outer end in the disk radial direction of the inner torque receiving portion 12 on the other side in the disk rotational direction to straddle the outer peripheral side of the disk 1 in the disk axial direction.

In the pair of outer torque receiving parts 14, the outer torque receiving part 14 on one side in the disk rotational direction is located on the opposite side from the inner side torque receiving part 12 of the pin insertion part 13 on one side in the disk rotational direction. As shown in FIG. 4, the outer torque receiving part 14 on the other side in the disk rotational direction is inserted from the outer side end of the pin insertion part 13 on the other side in the disk rotational direction. Extends inward in the radial direction of the disk. The pair of outer torque receiving portions 14 are arranged on the outer side of the vehicle in the vehicle width direction with respect to the disk 1.

As shown in FIG. 2, the outer beam portion 15 extends in the disk rotation direction and connects the inner sides of the pair of outer torque receiving portions 14 in the disk radial direction. The outer beam portion 15, like the pair of outer torque receiving portions 14, is arranged on the outer side with respect to the disk 1, as shown in FIG.

As described above, the mounting member 2 is provided across the outer circumferential side of the disk 1 and is attached to a non-rotating portion of the vehicle. The inner beam portion 11 and the pair of inner torque receiving portions 12 are arranged on the inner side of the mounting member 2, which is the side to be attached to a non-rotating part of the vehicle, and the pair of outer torque receiving portions 14 and the outer beam portion 15 is arranged on the outer side of the mounting member 2, which is opposite to the inner side.

As shown in FIGS. 2 and 3, the pair of outer torque receiving portions 14 and the pair of inner torque receiving portions 12 are each formed with a guide recess 20 having a similar concave shape. That is, the mounting member 2 has a total of four similar guide recesses 20 formed therein. These four guide recesses 20 are aligned in the disk radial direction. Furthermore, the two guide recesses 20 provided in the inner torque receiving part 12 and the outer torque receiving part 14 on one side in the disk rotational direction are aligned in the disk rotational direction, and The two guide recesses 20 provided in the side torque receiving part 12 and the outer torque receiving part 14 are aligned in the disk rotation direction.

As shown in FIG. 3, the inner torque receiving part 12 on one side in the disk rotation direction has a surface from the inner side in the disk rotation direction (center side of the mounting member 2 in the disk rotation direction) to the outer side in the disk rotation direction (mounting A guide recess 20 is formed to be recessed toward the opposite side of the member 2 from the center in the disk rotation direction. The inner torque receiving portion 12 on the other side in the disk rotation direction is also formed with a guide recess 20 that is recessed from the inner surface in the disk rotation direction toward the outside in the disk rotation direction. Therefore, the pair of inner-side torque receiving parts 12 are formed with concave-shaped guide recesses 20 that are recessed away from each other along the disk rotation direction on mutually opposing sides.

Further, as shown in FIG. 2, the outer torque receiving portion 14 on one side in the disk rotation direction is formed with a guide recess 20 that is recessed from the inner surface in the disk rotation direction toward the outer side in the disk rotation direction. ing. The outer torque receiving portion 14 on the other side in the disk rotation direction is also formed with a guide recess 20 that is recessed from the inner surface in the disk rotation direction toward the outside in the disk rotation direction. Therefore, the pair of outer torque receiving parts 14 are formed with concave guide recesses 20 that are recessed away from each other along the disk rotation direction on mutually opposing sides.

The guide recess 20 has a bottom surface 21 on the inner side in the recessed direction, an outer wall surface 22 on the outer side in the disk radial direction, and an inner wall surface 23 on the inner side in the disk radial direction. The outer wall surface 22 extends from the outer end of the bottom surface 21 in the disk radial direction toward the center of the mounting member 2 in the disk rotation direction. The inner wall surface 23 extends from the inner end of the bottom surface 21 in the disk radial direction toward the center of the mounting member 2 in the disk rotation direction.

These bottom surface 21, outer wall surface 22, and inner wall surface 23 all extend along the disk axial direction. Further, the bottom surface 21 is along a line in the disk radial direction passing through the center of the mounting member 2 in the disk rotation direction and the center of the disk 1, and the outer wall surface 22 and the inner wall surface 23 are along a surface perpendicular to this line. ing. Therefore, the outer wall surface 22 and the inner wall surface 23 both extend perpendicularly to the bottom surface 21 and are parallel to each other.

As shown in FIG. 1, the mounting member 2 has pin insertion holes (not shown) formed in each of a pair of pin insertion portions 13 on both sides in the disk rotation direction, and the caliper 5 is inserted into these pin insertion holes. A pair of slide pins 31 on both sides in the disk rotation direction are slidably fitted. Thereby, the mounting member 2 supports the caliper 5 slidably in the disk axial direction at the pair of pin insertion portions 13 thereof. In other words, in the caliper 5, the pair of slide pins 31 provided on both sides in the disk rotation direction are slidably fitted into pin insertion holes (not shown) of the pair of pin insertion parts 13 of the mounting member 2, respectively. As a result, the disc is supported by the mounting member 2 so as to be slidable in the axial direction of the disc.

As shown in FIG. 1, a common pad spring 7 is attached to the inner torque receiving part 12 and the outer torque receiving part 14 on one side that are aligned in the disk rotation direction. Further, a common pad spring 7 is attached to the inner torque receiving portion 12 and the outer torque receiving portion 14 on the other side that are aligned in the disk rotation direction. That is, only two pad springs 7 are attached to one attachment member 2. These pad springs 7 are common parts having the same shape.

As shown in FIGS. 6 and 7, the pad spring 7 has a mirror-symmetrical shape. The pad spring 7 is formed by press molding from a single plate having a constant thickness. The pad spring 7 has a pair of pad support parts 41 and a connection part 42 that connects the pair of pad support parts 41.

Here, the pad spring 7 in its natural state shown in FIGS. 6 and 7, which is not assembled to the mounting member 2 and does not support the pad 3, will be described. Note that in one pad spring 7, the pair of pad support parts 41 have a mirror-symmetrical shape, so one pad support part 41 will be explained.

One pad support part 41 includes an outer end plate part 51 on the side of the connecting part 42 and an outer support extending perpendicularly to the outer end plate part 51 from the end of the outer end plate part 51 on the opposite side to the connecting part 42. The plate part 52 and an intermediate plate part 53 (opposed and a base plate portion 54 extending perpendicularly to the intermediate plate portion 53 from the opposite end of the intermediate plate portion 53 to the outer support plate portion 52. ing.

The outer end plate portion 51 and the intermediate plate portion 53 are parallel, and the outer support plate portion 52 and the base plate portion 54 are parallel. The continuous outer support plate part 52, intermediate plate part 53, and base plate part 54 are connected in a concave shape as a whole to form a guide plate part 55.

The intermediate plate part 53 of one pad support part 41 has a flat plate shape, and extends from the outer support plate part 52 and the base plate part 54 to the opposite side from the other pad support part 41 . The guide plate portion 55 has an extending plate portion 61 extending from the end of the intermediate plate portion 53 on the opposite side to the other pad support portion 41 .

The extension plate part 61 has an extension tip part 62 which is the tip part of the extension from the intermediate plate part 53, in other words, an extension part 62 which is the tip part of the extension part 61 extending from the intermediate plate part 53. The width gradually becomes narrower toward the protruding tip portion 62, and it extends in a tapered shape so that the width of the extending tip portion 62 is the smallest. The extending plate portion 61 is bent with respect to the intermediate plate portion 53 so as to be disposed on the opposite side of the outer support plate portion 52 and the base plate portion 54 in the thickness direction of the intermediate plate portion 53. Here, the extending tip portion 62 is a portion of the extending plate portion 61 that becomes an edge.

As shown in FIG. 6(b), the extending plate portion 61 is connected to the outer support plate portion 52 and the base plate in the thickness direction of the intermediate plate portion 53 so as to form a straight line with respect to the intermediate plate portion 53. a first bent part 71 bent on the opposite side to the part 54; and a flat plate-shaped part extending from the first bent part 71 to the opposite side to the intermediate plate part 53 and to the opposite side to the other pad support part 41. It has a first plate portion 72 .

Further, the extending plate portion 61 is bent toward the other pad support portion 41 so as to form a straight line at the end edge of the first plate portion 72 opposite to the first bent portion 71. A second bent part 73 and a flat second plate extending from the second bent part 73 to the side opposite to the intermediate plate part 53 and to the other pad support part 41 side, as shown in FIG. 7(a). It has a section 74.

Further, the extending plate portion 61 has a third portion bent toward the intermediate plate portion 53 so as to form a straight line at the end edge of the second plate portion 74 on the opposite side from the second bent portion 73. It has a bent portion 75 and a flat third plate portion 76 extending from the third bent portion 75 toward the intermediate plate portion 53 and the other pad support portion 41 side. The end of the third plate portion 76 on the opposite side from the third bent portion 75 serves as the extending tip portion 62 .

As shown in FIG. 6(b), the bending lines of the first bending part 71, the second bending part 73, and the third bending part 75 are parallel to each other. The extending plate portion 61 has a multi-stage bending shape in which a plurality of flat plate-shaped first plate portions 72, second plate portions 74, and third plate portions 76 are connected at an angle, and has the shape of a part of a polygonal cylinder. I am doing it. As shown in FIG. 7(a), the angle formed by the adjacent first plate part 72 and second plate part 74 is the same as the angle formed by the adjacent second plate part 74 and third plate part 76. It is an obtuse angle of, for example, 120 degrees. Also, the distance between the first bent part 71 and the second bent part 73, the distance between the second bent part 73 and the third bent part 75, and the distance between the third bent part 75 and the extension. The distance from the protruding tip portion 62 is the same.

In the extending plate part 61 of one pad support part 41, the second bent part 73 is farthest from the other pad support part 41 in the extending plate part 61, and the extending tip part 62 is It is arranged closer to the other pad support portion 41 than the bent portion 73 . In other words, in the extending plate portion 61, the extending tip portion 62 is closer to the pad than the second bent portion 73 at the end in the width direction (the same direction as the disk axis direction when assembled) of the pad spring 7. It is arranged inside the spring 7 in the width direction.

As shown in FIGS. 6(a) and 7(b), one pad support portion 41 has a guide plate portion 55 extending outward from the end of the base plate portion 54 opposite to the other pad support portion 41. It has a biasing plate part 81 which is folded back toward the support plate part 52 side and arranged on the outer support plate part 52 side of the base plate part 54 .

One pad support part 41 has a folded part 82 in which the biasing plate part 81 is folded in an arc shape from the end of the base plate part 54 on the opposite side to the other pad support part 41 toward the outer support plate part 52 side. , extends in a straight line from the end of the folded part 82 opposite to the base plate part 54 in the direction of the other pad support part 41 so as to be further away from the base plate part 54 as the other pad support part 41 side approaches. It has an inner support plate part 83 that extends out.

The connection portion 42 connecting one pad support portion 41 described above and the other pad support portion 41 having mirror symmetry is the outer support plate of the outer end plate portion 51 of the pair of pad support portions 41. It has a connecting plate part 91 that connects the sides opposite to the parts 52, and a positioning part 92 provided between the pair of outer end plate parts 51 in the connecting plate part 91.

As shown in FIGS. 2 and 3, one pad spring 7 is attached to an inner torque receiving portion 12 and an outer torque receiving portion 14, both of which are located on one side of the mounting member 2 in the disk rotation direction. At this time, as shown in FIG. 2, one pad spring 7 is arranged to support one pad as shown in FIG. The concave guide plate part 55 of the pad support part 41 is fitted into the guide concave part 20 of the inner torque receiving part 12, and as shown in FIG. It is fitted into the guide recess 20 of the receiving part 14, and the positioning part 92 is fitted between the inner torque receiving part 12 and the outer torque receiving part 14.

As a result, in this one pad spring 7, the pair of pad support parts 41 are arranged on both sides in the axial direction of the disk 1, and each guide plate part 55 of the pair of pad support parts 41 is placed on the mounting member 2. The inner torque receiving portion 12 and the outer torque receiving portion 14 are placed in the guide recess 20 on one side in the disk rotation direction.

When the positioning portion 92 is fitted between the inner torque receiving portion 12 and the outer torque receiving portion 14, this one pad spring 7 is provided in the mounting member 2 such that movement in the disk axial direction is restricted. As a result, movement of this one pad spring 7 in the disk axial direction with respect to the disk 1 is also restricted.

The pad spring 7 provided on one side in the disk rotation direction is attached to the inner torque receiving part 12 and the outer torque receiving part 14, and the pad spring 7 is connected to a pair of guide recesses as shown in FIGS. 2 and 3. A pair of guide plate portions 55 that fit into the disk 20 are recessed in the disk rotation direction. Specifically, the pair of guide plate portions 55 have a shape concave toward the outside in the disk rotation direction.

One pad spring 7 is attached to the mounting member 2, and the base plate part 54 of the guide plate part 55 that fits into the guide recess 20 is arranged inside the guide plate part 55 in the disk radial direction. It faces and comes into contact with the inner wall surface 23 of the recess 20. Further, in this state, the outer support plate portion 52 of the guide plate portion 55 is disposed on the outer side of the guide plate portion 55 in the disk radial direction, and faces and comes into contact with the outer wall surface 22 of the guide recess 20. Further, the intermediate plate portion 53 of the guide plate portion 55 is disposed on the outer side of the guide plate portion 55 in the disk rotation direction, and faces and comes into contact with the bottom surface 21 on the back side of the guide recess 20.

The outer support plate portion 52 extends from the outer end in the disk radial direction of the intermediate plate portion 53, and the base plate portion 54 extends from the inner end in the disk radial direction of the intermediate plate portion 53, respectively, from the center of the mounting member 2 in the disk rotation direction. It extends towards the side. The outer support plate portion 52, the intermediate plate portion 53, and the base plate portion 54 all extend along the disk axial direction. Further, the intermediate plate portion 53 is along a line in the disk radial direction passing through the center of the mounting member 2 in the disk rotation direction and the center of the disk 1, and the outer support plate portion 52 and the base plate portion 54 are aligned along this line. along perpendicular planes. Therefore, the outer support plate part 52 and the base plate part 54 both extend perpendicularly to the intermediate plate part 53 and are parallel to each other.

As shown in FIG. 1, one pad spring 7 is attached to the mounting member 2, and the extending plate portion 61 extends from the side opposite to the disk 1 in the disk axial direction of the intermediate plate portion 53. The extending tip portion 62 is disposed outside the intermediate plate portion 53 in the disk rotation direction, that is, on the side opposite to the center of the mounting member 2 in the disk rotation direction. In this state, the extending plate portion 61 is arranged such that each bending line of the first bent portion 71 , the second bent portion 73 , and the third bent portion 75 is aligned with the center of the mounting member 2 in the disk rotation direction. along the radial line of the disk passing through the center.

The second bent portion 73 of the extended plate portion 61 is disposed at the farthest position from the disk 1 in the disk axial direction of the extended plate portion 61, and the extended tip portion 62 of the extended plate portion 61 is , is arranged at a position closer to the disk 1 than the second bent portion 73 in the disk axial direction. In other words, the extending plate portion 61 has the second bent portion 73 at its most tip position in the disk axial direction, and the extending tip portion 62 is arranged inside the second bent portion 73 in the disk axial direction. There is. As shown in FIGS. 2 to 4, the width of the extending plate portion 61 in the disk radial direction gradually decreases from the connection region with the intermediate plate portion 53 toward the extending tip portion 62. As shown in FIGS.

As shown in FIGS. 2 and 3, the other pad spring 7 also has an inner torque receiving portion 12 and an outer torque receiving portion 14 on the other side of the mounting member 2 in the disk rotation direction. It can be installed in the same way as 7. In this way, the pair of pad springs 7 are attached to the attachment member 2.

As shown in FIG. 3, the inner side A pad 3 is supported so as to be movable in the disk axial direction. Further, as shown in FIG. 2, each guide plate portion 55 of the pair of pad springs 7 is recessed in opposite directions and fitted into the guide recess 20 of the outer torque receiving portion 14 on both sides in the disk rotation direction. The outer pad 3 is supported so as to be movable in the disk axial direction.

The inner pad 3 and the outer pad 3 are the same common component. As shown in FIG. 5, the pad 3 has a mirror-like shape and includes a back plate 101 and a lining 102 attached to the back plate 101. The back plate 101 has a main plate part 105 to which the lining 102 is attached, and a pair of ears 106 that protrude in opposite directions from both ends of the main plate part 105 in the width direction. .

In the inner pad 3, the ear portion 106 on one side in the disk rotation direction supports the biasing plate portion 81 of the inner guide plate portion 55 against the pad spring 7 on the one side in the disk rotation direction. The plate part 83 is elastically deformed so as to approach the inner base plate part 54, and is held between the outer support plate part 52 of the inner guide plate part 55 and the inner support plate part 83 of the biasing plate part 81. Ru.

In this way, the ear portion 106 of the inner pad 3 on one side in the disk rotation direction is fitted into the inner guide plate portion 55 of the pad spring 7 on one side in the disk rotation direction. It is pressed against the outer support plate part 52 by the urging force of the urging plate part 81 . As shown in FIG. 3, the thus fitted ear portion 106 on one side in the disk rotation direction is inserted into the guide recess 20 of the inner torque receiving portion 12 on one side in the disk rotation direction.

The ear portion 106 on one side in the disk rotation direction of the inner pad 3 is guided by the guide plate portion 55 to which it is fitted, and moves in the disk axial direction. At this time, the guide plate section 55 connects the outer end surface of the ear section 106 in the disc rotational direction with the intermediate plate section 53, and the outer end surface of the ear section 106 on the outer side in the disk radial direction with the outer support plate section 52. The radially inner end surfaces of the disks are guided by biasing plate portions 81, respectively.

Further, in the inner pad 3, the ear portion 106 on the other side in the disk rotation direction supports the biasing plate portion 81 of the inner guide plate portion 55 with respect to the pad spring 7 on the other side in the disk rotation direction. The plate part 83 is elastically deformed so as to approach the inner base plate part 54, and is held between the outer support plate part 52 of the inner guide plate part 55 and the inner support plate part 83 of the biasing plate part 81. Ru.

In this way, the ear portion 106 of the inner pad 3 on the other side in the disk rotation direction is fitted into the inner guide plate portion 55 of the pad spring 7 on the other side in the disk rotation direction. It is pressed against the outer support plate part 52 by the urging force of the urging plate part 81 . The ear portion 106 on the other side in the disk rotation direction thus fitted is inserted into the guide recess 20 of the inner torque receiving portion 12 on the other side in the disk rotation direction.

The ear portion 106 of the inner pad 3 on the other side in the disk rotational direction is guided by the guide plate portion 55 to which it is fitted, and moves in the disk axial direction. At this time, the guide plate section 55 connects the outer end surface of the ear section 106 in the disc rotational direction with the intermediate plate section 53, and the outer end surface of the ear section 106 on the outer side in the disk radial direction with the outer support plate section 52. The radially inner end surfaces of the disks are guided by biasing plate portions 81, respectively.

In the state where the inner pad 3 is attached to the mounting member 2 via the pair of pad springs 7 in this way, the pair of ears 106 protrude in the disc rotation direction, in other words, the inner pad 3 is in a state where the pair of ears 106 protrude in the disc rotation direction. It has an ear part 106 which is provided in a protruding manner. The mounting member 2 has a guide recess 20 that is recessed in the disk rotation direction and into which the ear portion 106 is inserted. These ears 106 of the inner pad 3 and a pair of inner guide recesses 20 of the mounting member 2 are fitted with the inner guide plate portion 55 of the pad spring 7 interposed therebetween.

In a state where the inner pad 3 is supported in this manner, the pair of pad springs 7 are arranged so that each of the extending plate portions 61 is directed away from the ear portion 106 in the disk rotation direction with respect to the intermediate plate portion 53 and in the disk axial direction. The first bent portion 71 is bent in the direction away from the disk 1 in the direction away from the ear portion 106 in the disk rotation direction and the disk 1 on the side of the extending tip 62 from the first bent portion 71 and in the disk axial direction. The second bent part 73 is bent in a direction closer to the second bent part 73, and the second bent part 73 is closer to the extending tip 62 in the direction of approaching the lug 106 in the disk rotation direction and the direction closer to the disk 1 in the disk axial direction. It has a third bending part 75 which is bent into a third bending part 75.

In other words, in the pair of pad springs 7, each first plate portion 72 extends from the intermediate plate portion 53 in a direction away from the ear portion 106 in the disk rotation direction and in a direction away from the disk 1 in the disk axial direction. The second plate portion 74 extends from the first plate portion 72 in a direction away from the ear portion 106 in the disk rotation direction and in a direction toward the disk 1 in the disk axial direction. The third plate portion 76 extends from the second plate portion 74 in a direction approaching the ear portion 106 in the disk rotation direction and in a direction approaching the disk 1 in the disk axial direction.

As shown in FIG. 2, in the outer pad 3, similarly to the inner pad 3, the ear portion 106 on one side in the disk rotation direction is a guide plate portion on the outer side of the pad spring 7 on one side in the disk rotation direction. 55, and the ear portion 106 on the other side in the disk rotational direction is supported by the guide plate portion 55 on the outer side of the pad spring 7 on the other side in the disk rotational direction. As a result, in the outer pad 3, the ear portion 106 on one side in the disk rotation direction is inserted into the guide recess 20 of the outer torque receiving portion 14 on one side in the disk rotation direction, and the ear portion 106 on the other side in the disk rotation direction is inserted into the guide recess 20 of the outer torque receiving part 14 on the other side in the disk rotation direction. The outer pad 3 is supported by the outer torque receiving portions 14 on both sides in the disk rotation direction via a pair of pad springs 7.

As described above, one pad spring 7 elastically supports the ear part 106 on one side in the disk rotation direction of each pad 3 on the inner side and outer side, and the other pad spring 7 elastically supports the ear part 106 on one side in the disk rotation direction of each pad 3 on the inner side and outer side. This elastically supports the ear portion 106 of each pad 3 on the other side in the disk rotation direction.

As shown in FIG. 1, the caliper 5 has a substantially mirror-symmetrical shape and includes a caliper body 120 and a not-shown piston that is slidably provided on the caliper body 120.

The caliper body 120 includes a cylinder part 126 disposed on the inner side of the disc 1 in the disc axial direction, and a disc shaft extending from the outside of the cylinder part 126 in the disc radial direction to straddle the outer periphery of the disc 1, as shown in FIG. a bridge portion 127 extending toward the outer side along the direction; and a claw extending inward in the disk radial direction from the opposite side of the bridge portion 127 from the cylinder portion 126 and disposed on the outer side of the disk 1 in the disk axial direction. 128. Further, as shown in FIG. 1, the caliper body 120 has a pair of pin attachment portions 131 extending from the cylinder portion 126 on both sides in the disk rotation direction.

In the caliper body 120, a slide pin 31 is attached to a pin attachment portion 131 on one side in the disk rotation direction, and a slide pin 31 is also attached to a pin attachment portion 131 on the other side in the disk rotation direction. These slide pins 31 are slidably fitted into pin insertion holes (not shown) of the pin insertion portions 13 on both sides of the mounting member 2 in the disk rotation direction. In the caliper body 120, a piston (not shown) is disposed in a cylinder portion 126 so as to be movable in the disk axial direction so as to be able to move toward and away from the claw portion 128.

In the disc brake 10, hydraulic fluid is introduced into the cylinder portion 126 via a brake pipe (not shown). Then, brake fluid pressure acts on a piston (not shown). As a result, the piston advances toward the disk 1 and presses the inner pad 3 disposed between the piston and the disk 1 toward the disk 1. As a result, the inner pad 3 is guided by the inner guide plate portions 55 of the pair of pad springs 7, moves in the disk axial direction, and comes into contact with the disk 1.

Further, due to the reaction force of this pressing, the caliper body 120 slides the slide pin 31 with respect to the mounting member 2 and moves in the disk axial direction, and the claw portion 128 is disposed between the claw portion 128 and the disk 1. Press the outer pad 3 toward the disk 1. As a result, the outer pad 3 is guided by the outer guide plate portions 55 of the pair of pad springs 7, moves in the disk axial direction, and comes into contact with the disk 1.

In this manner, the caliper 5 presses the pair of pads 3 against both sides of the disk 1 by holding the pair of pads 3 between the piston and the claw portion 128 from both sides in the disk axial direction by the operation of the piston (not shown). As a result, the caliper 5 applies frictional resistance to the disc 1 to generate braking force. The caliper 5 is a fist type caliper.

The pad springs described in Patent Documents 1 and 2 have an extending plate portion that extends in a direction opposite to the disk in the disk axial direction from a guide plate portion that guides the outer end surface of the ear portion of the pad in the disk rotation direction. ing. This extending plate portion has a flat plate shape, and is inclined so that the end of the extending portion is further away from the ear portion of the pad in the disk rotation direction.

By the way, when a pad is assembled to a pad spring attached to a mounting member during maintenance such as pad replacement, the pad is assembled to the pad spring from the opposite side of the disk. At this time, the extending plate part extending from the guide plate part of the pad spring in the direction opposite to the disk is inclined so that the extending tip side is further away from the ear part of the pad in the disk rotation direction. It is designed to facilitate the insertion of However, if the extending tip of the extending plate portion of the pad spring faces in a direction opposite to the disk, there is a possibility that the pad will hit this extending tip and be damaged. Therefore, it is necessary to carefully attach the pad to the pad spring so as not to damage the pad, and there is room for improvement in terms of ease of assembling the pad.

On the other hand, in the disc brake 10 of the first embodiment, the guide plate part 55 of the pad spring 7 is connected to the intermediate plate part 53 facing the bottom surface 21 on the back side of the guide recess 20 of the mounting member 2. It has an extending plate part 61 extending in a direction away from the ear part 106 from the opposite side of the disc 1 in the disc axial direction, and an extending tip part 62 of the extending plate part 61 is connected to the extending plate part 61. 61 is disposed at a position closer to the disk 1 than the second bent portion 73, which is the position farthest from the disk 1 in the disk axial direction.

Therefore, even if the pad 3 is assembled to the guide plate portion 55 from the opposite side of the disk 1, the pad 3 is attached to the intermediate plate portion 53 in the direction away from the lug 106 in the disk rotation direction and in the direction away from the disk 1 in the disk axial direction. The extending first plate portion 72 facilitates insertion, and in addition, it is possible to prevent the pad 3 from hitting the extending tip portion 62. Therefore, the necessity of carefully attaching the pad 3 so as not to damage it is reduced, and the ease of assembling the pad 3 can be improved.

Furthermore, since the width of the extending plate portion 61 in the radial direction of the disk 1 decreases from the connecting region with the intermediate plate portion 53 toward the extending tip portion 62, an increase in the weight of the pad spring 7 can be suppressed. I can do it.

Further, the extending plate portion 61 includes a first bent portion 71 that is bent in a direction away from the ear portion 106 in the rotational direction of the disk 1 with respect to the intermediate plate portion 53, and a tip extending from the first bent portion 71. Since it has the second bent part 73 bent in the direction approaching the disk 1 on the side of the part 62, molding becomes easy.

In addition, in the first embodiment, the extension plate part 61 has three bending parts: a first bending part 71, a second bending part 73, and a third bending part 75. However, the number of bent portions is not limited to this. For example, the bending portion may be provided at only one location, two locations, or four or more locations. In either case, the extending tip portion 62 is arranged at a position closer to the disk 1 in the disk axial direction than the position of the extending plate portion 61 farthest from the disk 1 in the disk axial direction. .

[Second embodiment]
Next, the second embodiment will be described mainly based on FIGS. 8 to 11, focusing on the differences from the first embodiment. Note that parts common to those in the first embodiment are denoted by the same names and symbols.

As shown in FIGS. 8 and 9, the second embodiment uses a pad spring 7A that is partially different from the pad spring 7 of the first embodiment.

The pad spring 7A is also formed by press molding from a single plate of constant thickness, and has a mirror-symmetrical shape. The pad spring 7A includes a pair of pad support parts 41A that are partially different from the pad support part 41 of the first embodiment, and a connection part 42 similar to the first embodiment that connects the pair of pad support parts 41A. are doing.

Here, the pad spring 7A in its natural state shown in FIGS. 8 and 9, which is not assembled to the mounting member 2 and does not support the pad 3, will be described. Note that in one pad spring 7A, the pair of pad support parts 41A have mirror-symmetrical shapes, so one pad support part 41A will be explained.

One pad support portion 41A has a guide plate portion 55A that is partially different from the guide plate portion 55 of the first embodiment. The guide plate portion 55A includes an outer end plate portion 51, an outer support plate portion 52, an intermediate plate portion 53, a base plate portion 54, and a biasing plate portion 81, all of which are similar to those in the first embodiment. It has an extension plate portion 61A that is different from the extension plate portion 61 of the embodiment.

The extension plate portion 61A has a width that gradually becomes narrower toward an extension tip portion 62A, which is the tip of the extension from the intermediate plate portion 53, and is tapered such that the width of the extension tip portion 62A is the smallest. It extends in a shape. The extending plate portion 61A is bent with respect to the intermediate plate portion 53 so as to be disposed on the opposite side of the outer support plate portion 52 and the base plate portion 54 in the thickness direction of the intermediate plate portion 53.

The extending plate portion 61A is curved to form a part of a cylinder. Therefore, the extending plate portion 61A has a curved shape at least in part. The extending plate portion 61A extends from the intermediate plate portion 53 to the side opposite to the outer support plate portion 52 and the base plate portion 54 and to the side opposite to the other pad support portion 41, and then extends from the outer support plate portion 52 and the base plate portion 53 to the side opposite to the other pad support portion 41. It extends to the side opposite to the plate part 54 and the other pad support part 41 side, and then extends to the outer support plate part 52 and the base plate part 54 side and the other pad support part 41 side.

The extending plate portion 61A of one pad supporting portion 41A has an end portion 151 disposed at the farthest position from the other pad supporting portion 41A in the extending plate portion 61A at the intermediate portion in the extending direction. The extending tip portion 62A is arranged closer to the other pad support portion 41A than the outermost end portion 151.

As shown in FIG. 10, the disc brake 10A of the second embodiment has the above-mentioned pair of pad springs 7A instead of the pair of pad springs 7 of the first embodiment. It is different from 10.

One pad spring 7A is attached to the inner torque receiving part 12 and the outer torque receiving part 14 of the mounting member 2, both of which are on one side in the disk rotation direction, in the same manner as in the first embodiment. In this state, the extending plate portion 61A extends from the side opposite to the disk 1 in the disk axial direction of the intermediate plate portion 53, and extends the extending tip portion 62A to the outside of the intermediate plate portion 53 in the disk rotation direction. Included and arranged. In this state, the axis of the center of curvature of the extended plate portion 61A is along a line in the disk radial direction that passes through the center of the mounting member 2 in the disk rotation direction and the center of the disk 1. Further, the width of the extending plate portion 61A in the disk radial direction decreases from the connection region with the intermediate plate portion 53 toward the extending tip portion 62A.

The end portion 151 of the extended plate portion 61A is disposed at the farthest position from the disk 1 in the disk axial direction of the extended plate portion 61A, and the extended tip portion 62A of the extended plate portion 61A is , is arranged at a position closer to the disk 1 than this end portion 151 in the disk axial direction.

The other pad spring 7A is similarly attached to the inner torque receiving section 12 and the outer torque receiving section 14, both of which are located on the other side in the disk rotational direction of the mounting member 2. In this way, the pair of pad springs 7A are attached to the attachment member 2.

The inner pad 3 is attached to each guide plate portion 55A of the pair of pad springs 7A, which is recessed in opposite directions and fitted into the guide recess 20 of the inner torque receiving portion 12 on both sides in the disk rotation direction. It is supported so that it can be moved. Further, the outer pad 3 is attached to each guide plate portion 55A of the pair of pad springs 7A, which is recessed in opposite directions and fitted into the guide recess 20 of the outer torque receiving portion 14 on both sides in the disk rotation direction. It is supported so as to be movable in the axial direction.

As shown in FIG. 11, in the inner pad 3, the ear portion 106 on one side in the disk rotation direction is connected to the outer support plate of the inner guide plate portion 55A with respect to the pad spring 7A on one side in the disk rotation direction. It is held between the portion 52 and the inner support plate portion 83 of the biasing plate portion 81 in the same manner as in the first embodiment. In addition, the pad 3 on the inner side has the ear portion 106 on the other side in the disk rotation direction biased against the outer support plate portion 52 of the guide plate portion 55A on the inner side with respect to the pad spring 7A on the other side in the disk rotation direction. It is held between the inner support plate part 83 of the plate part 81 in the same manner as in the first embodiment.

In this state, the pair of pad springs 7A have their respective extending plate portions 61A extending from the intermediate plate portion 53 in a direction away from the ear portion 106 in the disk rotation direction and in a direction away from the disk 1 in the disk axial direction. After that, it extends in a direction away from the lug 106 in the disk rotational direction and in a direction toward the disk 1 in the disk axial direction, and then in a direction closer to the lug 106 in the disk rotational direction and in a direction closer to the disk 1 in the disk axial direction. put out

The extending plate portion 61A extending from the intermediate plate portion 53 is arranged such that the boundary region portion 152 between the intermediate plate portion 53 and the outermost end portion 151 is in the direction away from the ear portion 106 in the disk rotation direction and in the disk axial direction. It extends in the direction away from 1.

Similarly, for the outer pad 3, the ear portion 106 on one side in the disk rotation direction is supported by the outer guide plate portion 55A of the pad spring 7A on one side in the disk rotation direction, and the ear portion 106 on the other side in the disk rotation direction is supported by the outer guide plate portion 55A of the pad spring 7A on one side in the disk rotation direction. The portion 106 is supported by the guide plate portion 55A on the outer side of the pad spring 7A on the other side in the disk rotation direction.

In the disc brake 10A of the second embodiment, the guide plate portion 55A of the pad spring 7A is an extension plate that extends in a direction away from the ear portion 106 from the side opposite to the disk 1 in the disk axial direction of the intermediate plate portion 53. 61A, but the extending tip 62A of the extending plate 61A is at a position closer to the disk 1 than the farthest end 151 of the extending plate 61A, which is the farthest position from the disk 1 in the disk axial direction. It is located in

Therefore, even if the pad 3 is fitted into the guide plate portion 55A from the opposite direction to the disk 1, it will separate from the intermediate plate portion 53 in the direction away from the ear portion 106 in the disk rotation direction and away from the disk 1 in the disk axial direction. The boundary region portion 152 extending in the direction facilitates insertion, and in addition, it is possible to prevent the pad 3 from hitting the extending tip portion 62A. Therefore, the necessity of carefully attaching the pad 3 so as not to damage it is reduced, and the ease of assembling the pad 3 can be improved.

Furthermore, since the extending plate portion 61A has a width in the radial direction of the disk 1 that decreases from the connecting region with the intermediate plate portion 53 toward the extending tip portion 62A, it is possible to suppress an increase in the weight of the pad spring 7A. Can be done.

Furthermore, since at least a portion of the extending plate portion 61A has a curved surface shape, molding becomes easy.

Note that the configuration of a portion of the extension plate portion 61 of the first embodiment and the configuration of a portion of the extension plate portion 61A of the second embodiment may be combined as appropriate. That is, the extending plate portion may have both a bent portion and a curved portion.

[Third embodiment]
Next, the third embodiment will be described mainly based on FIGS. 12 to 15, focusing on the differences from the first embodiment. Note that parts common to those in the first embodiment are denoted by the same names and symbols.

As shown in FIGS. 12 and 13, the third embodiment uses a pad spring 7B that is partially different from the pad spring 7 of the first embodiment.

The pad spring 7B is also formed by press molding from a single sheet of constant thickness, and has a mirror-symmetrical shape. The pad spring 7B includes a pair of pad support parts 41B that are partially different from the pad support part 41 of the first embodiment, and a connection part 42 that is similar to the first embodiment and connects the pair of pad support parts 41B. are doing.

Here, the pad spring 7B in its natural state shown in FIGS. 12 and 13, which is not assembled to the mounting member 2 and does not support the pad 3, will be described. Note that in one pad spring 7B, the pair of pad support parts 41B have mirror-symmetrical shapes, so one pad support part 41B will be explained.

One pad support portion 41B has a guide plate portion 55B that is partially different from the guide plate portion 55 of the first embodiment. The guide plate portion 55B includes an outer end plate portion 51, an outer support plate portion 52, an intermediate plate portion 53, a base plate portion 54, and a biasing plate portion 81, all of which are similar to those in the first embodiment. It has a plurality of extension plate parts 61B different from the extension plate part 61 of the embodiment, specifically two extension plate parts 61B.

The plurality of extending plate parts 61B are bent with respect to the intermediate plate part 53 so as to be arranged on the opposite side from the outer support plate part 52 and the base plate part 54 in the thickness direction of the intermediate plate part 53. . Each of the plurality of extending plate parts 61B has a flat plate shape, and extends perpendicularly to the intermediate plate part 53 to the side opposite to the outer support plate part 52 and the base plate part 54. One extending plate portion 61B is arranged on the outer support plate portion 52 side of the intermediate plate portion 53, and the other extending plate portion 61B is arranged on the base plate portion 54 side of the intermediate plate portion 53. The plurality of extending plate portions 61B are arranged on the same plane.

As shown in FIG. 14, the disc brake 10B of the third embodiment has the above-mentioned pair of pad springs 7B instead of the pair of pad springs 7 of the first embodiment. It is different from 10.

One pad spring 7B is attached to the inner torque receiving part 12 and the outer torque receiving part 14 of the mounting member 2, both of which are on one side in the disk rotation direction, in the same manner as in the first embodiment. In this state, the plurality of extending plate portions 61B extend from the side of the intermediate plate portion 53 opposite to the disk 1 in the disk axial direction, and are disposed outside of the intermediate plate portion 53 in the disk rotation direction. In other words, the extending plate portion 61B extending from the intermediate plate portion 53 is perpendicular to the intermediate plate portion 53 and extends outward in the disk rotation direction. In this state, the plurality of extending plate portions 61B are along a plane perpendicular to the central axis of the disk 1.

The plurality of flat plate-shaped extension plate portions 61B, including the extension tip portion 62B which is the tip portion extending from the intermediate plate portion 53, are arranged at a constant position in the disk axial direction. In other words, each of the plurality of flat plate-shaped extension plate portions 61B extends perpendicularly to the central axis of the disk 1.

The other pad spring 7B is similarly attached to the inner torque receiving part 12 and the outer torque receiving part 14, both of which are located on the other side in the disk rotational direction of the mounting member 2. In this way, the pair of pad springs 7B are attached to the attachment member 2.

The inner pad 3 is attached to each of the guide plate parts 55B, which are recessed in opposite directions of the pair of pad springs 7B and fitted into the guide recesses 20 of the inner torque receiving parts 12 on both sides in the disc rotational direction. It is supported so that it can be moved. Further, the outer pad 3 is attached to each guide plate portion 55B of the pair of pad springs 7B which is recessed in opposite directions and fitted into the guide recess 20 of the outer torque receiving portion 14 on both sides in the disk rotation direction. It is supported so as to be movable in the axial direction.

As shown in FIG. 15, in the inner pad 3, the ear portion 106 on one side in the disk rotation direction is connected to the outer support plate of the inner guide plate portion 55B with respect to the pad spring 7B on one side in the disk rotation direction. It is held between the portion 52 and the inner support plate portion 83 of the biasing plate portion 81 in the same manner as in the first embodiment. In addition, the inner pad 3 has an ear portion 106 on the other side in the disk rotation direction that is biased against the outer support plate portion 52 of the inner guide plate portion 55B with respect to the pad spring 7B on the other side in the disk rotation direction. It is held between the inner support plate part 83 of the plate part 81 in the same manner as in the first embodiment.

In this state, the plurality of extending plate portions 61B of the pair of pad springs 7B extend perpendicularly to the intermediate plate portion 53 in a direction away from the ear portion 106 in the disk rotation direction.

Similarly, for the outer pad 3, the ear portion 106 on one side in the disk rotation direction is supported by the outer guide plate portion 55B of the pad spring 7B on one side in the disk rotation direction, and the ear portion 106 on the other side in the disk rotation direction is supported by the outer guide plate portion 55B of the pad spring 7B on one side in the disk rotation direction. The portion 106 is supported by the guide plate portion 55B on the outer side of the pad spring 7B on the other side in the disk rotation direction.

In the disc brake 10B of the third embodiment, the guide plate part 55B of the pad spring 7B has a plurality of extensions extending in a direction away from the ear part 106 from the side opposite to the disc 1 in the disc axial direction of the intermediate plate part 53. It has plate portions 61B, and these extending plate portions 61B extend perpendicularly to the intermediate plate portion 53.

Therefore, even if the pad 3 is fitted into the guide plate part 55B from the opposite direction to the disc 1, the extending plate part 61B extends from the intermediate plate part 53 in a direction away from the ear part 106 in the disc rotation direction. This facilitates insertion, and in addition, it is possible to prevent the pad 3 from hitting the extended tip portion 62B. Therefore, the necessity of carefully attaching the pad 3 so as not to damage it is reduced, and the ease of assembling the pad 3 can be improved.

Further, since the plurality of extending plate portions 61B are provided in line in the disk radial direction, the size of each extending plate portion 61B can be reduced, and an increase in weight can be suppressed.

In the third embodiment, the number of extending plate portions 61B in one pad support portion 41B is not limited to two, and may be provided at only one, or may be provided at three or more locations.

Further, in the third embodiment, in addition to extending the extending plate portion 61B perpendicularly to the intermediate plate portion 53 in a direction away from the ear portion 106 in the disk rotation direction, It may extend in a direction away from the ear portion 106 and in a direction toward the disk 1 in the disk axial direction. That is, the flat plate-shaped extension plate portion 61B may be inclined at an acute angle with respect to the flat plate-shaped intermediate plate portion 53. With this configuration, the extending tip portion 62B of the extending plate portion 61B is arranged at a position closer to the disk 1 than the base end position of the extending plate portion 61B farthest from the disk 1 in the disk axial direction. It turns out.

In the first to third embodiments, each pad 3 has ear portions 106 protruding from both sides of the disk 1 in the rotational direction. Even when the ear portion 106 is provided, the ear portion 106 may be supported by the pad springs 7, 7A, and 7B described above. That is, if each pad 3 has an ear portion 106 protruding from at least one side in the rotational direction of the disk 1, the ear portion 106 may be held by the pad springs 7, 7A, and 7B described above. .

A first aspect of the embodiment described above includes a mounting member that is attached to a non-rotating part of a vehicle and provided across the outer circumferential side of a disk, a caliper that is slidably provided on the mounting member, and a a pair of pads that are pressed against both sides of the disk; and a pad spring that is attached to the mounting member and elastically supports each of the pads; The mounting member has a protruding ear, the mounting member has a guide recess that is recessed in the rotational direction of the disk and into which the ear is inserted, and the pad spring is disposed in the guide recess and is attached to the ear. the guide plate includes a facing plate facing a bottom surface on the back side of the guide recess, and a side of the facing plate opposite to the disk in the axial direction of the disk; an extending plate portion extending from the disk, and an extending tip portion of the extending plate portion is closer to the disk than a position of the extending plate portion furthest from the disk in the axial direction of the disk. placed in position. This makes it possible to improve the ease of assembling the pad.

Further, in a second aspect, in the first aspect, the width of the extending plate portion in the radial direction of the disk decreases from the connection region with the opposing plate portion toward the extending tip portion.

Further, in a third aspect, in the first or second aspect, the extending plate portion is bent with respect to the opposing plate portion in a direction away from the ear portion in the rotational direction of the disk. It is characterized by having a bent part and a second bent part bent in a direction closer to the disk on the side closer to the extending tip than the first bent part.

Further, in a fourth aspect, in any one of the first to third aspects, the extending plate portion has a curved surface shape at least in part.

Further, a fifth aspect includes a mounting member that is attached to a non-rotating part of the vehicle and provided across the outer circumferential side of the disc, a caliper that is slidably provided on the mounting member, and a caliper that is attached to both sides of the disc. A pair of pads to be pressed, and a pad spring attached to the mounting member to elastically support each pad, each pad having an ear protruding from at least one side in the rotational direction of the disk. The mounting member has a guide recess that is recessed in the rotational direction of the disk and into which the ear is inserted, and the pad spring has a guide that is disposed in the guide recess and guides the ear. The guide plate includes a facing plate facing a bottom surface on the back side of the guide recess, and an extension extending from a side of the facing plate opposite to the disk in the axial direction of the disk. and a protruding plate part, the extending plate part extending perpendicularly to the opposing plate part. This makes it possible to improve the ease of assembling the pad.

Further, in a sixth aspect based on the fifth aspect, a plurality of the extending plate portions are provided in line in the radial direction of the disk.

1 Disc 2 Mounting member 3 Pad 5 Caliper 7, 7A, 7B Pad spring 10, 10A, 10B Disc brake 20 Guide recess 21 Bottom surface 53 Intermediate plate part (opposing plate part)
55, 55A, 55B Guide plate portion 61, 61A, 61B Extension plate portion 62, 62A, 62B Extension tip portion 71 First bent portion 73 Second bent portion 106 Ear portion

Claims (1)

a mounting member that is attached to a non-rotating part of the vehicle and provided across the outer circumferential side of the disc;
a caliper slidably provided on the mounting member;
a pair of pads pressed against both sides of the disk by the caliper;
a pad spring attached to the mounting member and elastically supporting each pad;
Each of the pads has an ear portion protruding from at least one side in the rotational direction of the disk,
The mounting member has a guide recess that is recessed in the rotational direction of the disk and into which the ear portion is inserted;
The pad spring has a guide plate portion that is disposed in the guide recess and guides the ear portion,
The guide plate portion is
a facing plate portion provided at a position facing a bottom surface on the back side of the guide recess in the rotational direction of the disk;
an extending plate portion extending from a side of the opposing plate portion opposite to the disk in the axial direction of the disk;
The extending plate portion extends perpendicularly to the opposing plate portion in a direction away from the ear portion in the rotational direction of the disk,
A disc brake characterized in that a plurality of the extending plate parts are provided in parallel on the outer circumferential side and the inner circumferential side of the opposing plate part, respectively, in the radial direction of the disc.

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