JP4492271B2 - Pad-suspended disc brake - Google Patents

Description

  The present invention relates to a pad-suspended disc brake having a support member attached to a member on the vehicle body side, and a pad that is suspended and supported by a support member via a hanger pin.

Conventionally, various disc brakes are known. For example, the disc brakes described in Patent Documents 1 and 2 are known.
The disc brake according to Patent Document 1 has a caliper (support member) attached to the vehicle body side, and a pair of pads that are supported by hanging from the caliper via hanger pins. The caliper is provided with an inner piston that presses the inner pad toward the rotor and an outer piston that presses the outer pad toward the rotor. Therefore, the disc brake according to Patent Document 1 is a counter-type disc brake. The pad is a pad-suspended disc brake in which the pad is suspended and supported by a hanger pin.

The disc brake according to Patent Document 2 has a caliper (support member) attached to the vehicle body side and a pair of pads. The pad is provided with protruding ears on the rotor inlet side and rotor outlet side, and the caliper rotor inlet side and rotor outlet side are provided with recesses for hooking the ears. It has been. Both ears are supported by each recess so as to be slidable in the rotor axial direction.
In addition, an elastic member is attached to the ear portion on the rotor entrance side. The elastic member is elastically brought into contact with the bottom surface of the caliper recess, and is configured to urge the pad from the rotor turn-in side toward the rotor turn-out side by an elastic force. For this reason, the elastic member is configured to suppress the rattling of the brake by pressing the ear part on the rotor delivery side against the caliper, thereby suppressing the backlash of the pad with respect to the caliper.
JP 2004-108556 A Japanese Patent Laid-Open No. 10-331883

  However, since the elastic member is provided at the ear portion of the pad on the side where the rotor is introduced, the biasing direction of the pad biased by the elastic member is limited by the position of the ear portion. The ears are usually provided at positions outside the rotor circumferential direction, and the urging force received by the pad by the elastic member is different from the direction of the torque received by the pad when the pad is pressed against the rotor. For this reason, when the pad is started to be pressed against the rotor, the pad is easily rattled against the caliper. Therefore, the brake squeal could not be effectively suppressed.

In addition, a pad suspension type disc brake (see Patent Document 1) provided with an elastic member for suppressing brake squeal has not been known so far. And the thing provided with the elastic member had the same problem as patent document 2. FIG.
Then, this invention makes it a subject to provide the pad suspension type disc brake which can prevent the backlash of a pad suitably.

In order to solve the above-mentioned problems, the present invention is a pad-suspended disc brake having a configuration as described in each claim.
According to the first aspect of the present invention , the elastic member is provided on the rotor retraction side of the pad so as not to be interposed between the surface of the outer edge of the back plate on the rotor retraction side extending in the circumferential direction and the torque receiving portion. Installed. The elastic member elastically abuts against a part of the support member to urge the pad from the rotor turn-in side toward the rotor turn-out side, and the outer edge of the pad on the rotor turn-out side is a torque receiving portion of the support member. And the biasing direction is substantially from the centroid of the pad to the rotor rotation tangent at the centroid.

Therefore, the urging direction of the pad by the elastic member is from the centroid of the pad to the rotor rotation tangent at the centroid. That is, it is in the same direction as the direction of the force received when the pad is pressed by the rotor.
Therefore, the direction of the force received by the pad before and after being pressed by the rotor does not change or hardly changes. Therefore, the pad is preferably prevented from rattling with respect to the support member. Thus, the squealing of the brake can be effectively prevented.

According to the invention of claim 2, elastic member has a radially extending portion extending in the rotor radial direction along the outer edge of the rotor run-in side of the back plate. The radially extending portion is supported by the outer side hooking section is formed on each rotor radially outer position near the rotor radially inboard position and the inner side hooking portion of the back plate, and RyoKaketome It is configured to swell in the rotor circumferential direction between the portions and to elastically contact the support member.

Therefore, since the radially extending portion of the elastic member extends between the outer latching portion and the inner latching portion of the back plate, the direction in which the pad is urged is determined from the centroid of the pad. It can be easily adjusted on the rotor rotation tangent at the center.
Thus, the elastic member can bias the pad substantially from the centroid of the pad onto the rotor rotational tangent at the centroid.

According to the invention described in claim 3, the elastic member, along the outer edge of the back plate is folded back from the stop was partially subjected to at least hand outer side hooking portion formed on the back plate and the inner side hooking section And a circumferentially extending portion extending in the circumferential direction of the rotor, and a tip of the circumferentially extending portion is latched to the back plate. The circumferentially extending portion is configured to be elastically deformed by elastically contacting the radially extending portion with a part of the support member.
Therefore, by making the radially extending portion elastically contact with the support member, both the radially extending portion and the circumferentially extending portion are elastically deformed. Therefore, the elastic member can strongly urge the pad by the elastic force of both extending portions. Thus, the backlash of the pad can be reliably suppressed.

According to the invention described in claim 4, the outer edge of the back plate on the side where the rotor is introduced is provided with an outer recessed portion that is recessed in the rotor circumferential direction at the rotor radially outer position, and an inner position in the rotor radial direction. Thus, an inward recessed portion that is recessed in the circumferential direction of the rotor is formed. The elastic member has an outer piece provided in the outer concave portion, an inner piece provided in the inner concave portion, and a connecting piece for connecting the outer piece and the inner piece. Each piece is configured to elastically abut against the support member.

Therefore, the elastic member urges the pad toward the rotor outlet side from the rotor inlet side by the outer piece and the inner piece. Then, the outer piece biases the pad at a position radially outward of the rotor, and the inner piece biases the pad at a position radially inward of the rotor. Therefore, the elastic member is configured to be able to bias the pad from the centroid of the pad to the rotor rotation tangent at the centroid by the outer piece and the inner piece.
Thus, the elastic member can bias the pad substantially from the centroid of the pad onto the rotor rotational tangent at the centroid.

(Embodiment 1)
The first embodiment will be described with reference to FIGS.
As shown in FIG. 1, the disc brake 10 includes a caliper 11, a pair of pads 1, and two hanger pins 16 that suspend and support the pad 1 with respect to the caliper 11. An elastic member 4 is attached to the pad 1 to urge the pad 1 from the rotor inlet side to the rotor outlet side (from the right side to the left side in FIG. 1).

As shown in FIG. 1, the caliper 11 straddles the rotor R in the axial direction outside the rotor R, and has an insertion portion 11a at the center. A pad 1 is provided in the insertion portion 11 a, and the pad 1 is suspended and supported by a hanger pin 16.
The caliper 11 has a split configuration including an inner caliper 12 disposed on the inner side (vehicle body side) and an outer caliper 13 disposed on the outer side, and these are fixed by a plurality of bolts 18. Has been.
As shown in FIGS. 2 and 3, the inner caliper 12 is provided with an attachment portion 12c attached to the vehicle body side member 19, and the caliper 11 is attached to the vehicle body side member 19 by the attachment portion 12c.

The inner caliper 12 and the outer caliper 13 have a plurality (for example, two) of cylinders 12a and 13a in which pistons 14 and 15 are provided as shown in FIGS.
The pistons 14 and 15 are configured to move in the rotor axial direction by the hydraulic pressure in the cylinders 12a and 13a, and the inner piston 14 presses the inner pad 1a against the inner surface of the rotor R. The outer piston 15 presses the outer pad 1b against the outer surface of the rotor R. That is, the disc brake 10 according to the present embodiment is a counter-type disc brake.

The pad 1 has a friction material 3 and a back plate 2 as shown in FIG.
The friction material 3 is pressed by the rotor R and is brought into sliding contact with the rotor R to generate a braking force.
The back plate 2 is provided on the back surface of the friction material 3 and supports the back surface of the friction material 3.
As shown in FIG. 3, the back plate 2 is slightly larger than the friction material 3 and has latching portions 2b, 2c, 2d and a pair of mounting holes 2a at positions where the friction material 3 is avoided.

The mounting hole 2a is a through-hole through which the hanger pin 16 is inserted, and the back plate 2 has a rotor turning-around position (right side in FIG. 3) and a rotor turning-out position on the outer side in the rotor radial direction (upward in FIG. 3). One is formed at each position (position on the left side in FIG. 3).
The latching portion 2b (at the center on the outer side) is a through hole in which one end of the elastic member 4 is latched, and is located near the center in the rotor circumferential direction on the outer side in the rotor radial direction (upward in FIG. 3) of the back plate 2 ( It is formed at a position near the left and right center in FIG.

The (inner side) latching portion 2c is a through hole in which the other end of the elastic member 4 is latched, and the rotor close-in position (Fig. 3) near the inner side of the back plate 2 in the rotor radial direction (lower side in Fig. 3). It is formed on the right side).
As shown in FIG. 4, the (outside) latching portion 2 d is formed by cutting out a part of the back plate 2, and is configured to latch a part of the elastic member 4. Specifically, the latching portion 2d is formed by cutting out the outer end in the rotor radial direction (upper end in FIG. 3) of the outer edge of the back plate 2 on the rotor entrance side (right side in FIG. 3).

The elastic member 4 is formed of a wire spring as shown in FIGS. 4 and 5 and integrally includes a radially extending portion 4a and a circumferentially extending portion 4b.
The radially extending portion 4a extends in the rotor radial direction along the outer edge of the back plate 2 on the rotor entrance side (right side in FIG. 4). The radially extending portion 4a is disposed on the back side of the back plate 2 (the lower side in FIG. 5), and one end portion on the outer side is from the back side to the front side of the back plate 2 (from the lower side to the upper side in FIG. 5). ) It is bent and is latched by the outer latching portion 2d. A locking portion 4c that is bent from the back surface side of the back plate 2 to the front surface side and hooked to the inner hooking portion 2c is provided at one inward end portion of the radially extending portion 4a.

As shown in FIGS. 4 and 5, the circumferentially extending portion 4 b is folded and extended from the outer end portion of the radially extending portion 4 a. The circumferentially extending portion 4b extends in the rotor circumferential direction along the outer edge of the back plate 2 on the outer side in the rotor radial direction (upper side in FIG. 4), and is disposed on the front side of the back plate 2 (upper side in FIG. 5). Has been. The front end of the circumferentially extending portion 4b extends from the front side to the back side of the back plate 2 (from the upper side to the lower side in FIG. 5) and is latched to the latching portion 2b on the outer central side. 4d is provided. On the other hand, the base end portion of the circumferentially extending portion 4b is latched by the outer latching portion 2d.
A spiral portion 4f is formed in a part of the circumferentially extending portion 4b. The spiral portion 4f is spirally wound around the attachment hole 2a, and the hanger pin 16 is inserted therethrough.

  As shown in FIG. 4, the radially extending portion 4 a swells in the rotor circumferential direction from the outer edge of the back plate 2 on the rotor delivery side (right side in FIG. 4), and the substantially central portion in the rotor radial direction swells most. It has a shape. Therefore, by attaching the pad 1 to the caliper 11 as shown in FIG. 6, the radially extending portion 4 a elastically abuts against the first torque receiving portion 11 b of the caliper 11. And since the radial direction extension part 4a is each supported by the outer latching part 2d and the inner latching part 2c, it has the structure which produces strong elastic force. Thus, the radially extending portion 4a strongly biases the pad 1 from the rotor turn-in side toward the rotor turn-out side (from the right side to the left side in FIG. 6).

The circumferentially extending portion 4b is configured to be elastically deformed together with the radially extending portion 4a when the radially extending portion 4a is elastically contacted with the first torque receiving portion 11b. For example, the spiral portion 4f is elastically deformed in the diameter expanding direction.
Therefore, the elastic member 4 is configured to strongly bias the pad 1 using the elastic force of the circumferentially extending portion 4b in addition to the elastic force of the radially extending portion 4a.

  The urging direction of the pad 1 in the elastic member 4 is determined by the bulging shape of the radially extending portion 4a, and the bulging shape is the most bulging shape at a substantially central portion in the rotor radial direction ( (See FIG. 4). Therefore, the urging direction of the urging force F of the pad 1 by the elastic member 4 is substantially on the rotor rotation tangent line from the centroid G to the centroid G of the pad 1 as shown in FIG.

As shown in FIG. 6, the back plate 2 is urged by the elastic member 4, and the outer edge on the rotor delivery side is pressed against the second torque receiving portion 11 c of the caliper 11.
The outer edge of the back plate 2 on the rotor delivery side is formed in a straight line and is orthogonal to the rotor rotation tangent at the centroid G. On the other hand, the second torque receiving portion 11c of the caliper 11 is also formed in a straight line shape and is orthogonal to the rotor rotation tangent at the centroid G.
Accordingly, the outer edge of the back plate 2 on the rotor delivery side comes into contact with the second torque receiving portion 11c over a wide area. And it is pressed by the orthogonal direction with respect to the 2nd torque receiving part 11c. Thus, the back plate 2 can be stably supported by the second torque receiving portion 11c.

A mounting portion 2e to which the sensor portion 5 is attached is formed at the lower end portion of the back plate 2 as shown in FIG.
When the friction material 3 becomes thin, the sensor unit 5 generates a sound by sliding against the rotor R, and notifies the occupant that the friction material 3 has reached a predetermined thickness (limit thickness). It is a tool.

The sensor unit 5 is formed by bending a leaf spring, and is attached to the surface of the attachment portion 2e of the back plate 2 (the back side surface in FIG. 3).
The sensor unit 5 extends in the rotor circumferential direction, and gradually extends from the front surface side to the back surface side of the back plate 2 as shown in FIG. 2, and then is folded back to the front surface side. Therefore, the sensor unit 5 is configured to be easily elastically deformed in the thickness direction of the back plate 2 by ensuring a sufficient length.

As shown in FIGS. 1 and 2, mounting holes 12 b and 13 b through which the hanger pins 16 are inserted are formed in the inner caliper 12 and the outer caliper 13.
The hanger pin 16 is inserted in the order of the mounting hole 13b of the outer caliper 13, the mounting hole 2a of the outer pad 1b, the mounting hole 2a of the inner pad 1a, and the mounting hole 12b of the inner caliper 12. Thus, the pair of pads 1 are suspended and supported with respect to the caliper 11 via the hanger pins 16.

  As shown in FIGS. 1 and 2, the hanger pin 16 has a head portion 16 a having a diameter larger than that of the mounting hole 13 b of the outer caliper 13 at one end portion. On the other hand, a retaining member 20 that prevents the hanger pin 16 from falling off is inserted into the other end of the hanger pin 16. Thus, the hanger pin 16 is prevented from coming off from the caliper 11.

The back plate 2 is also formed with a latching portion 2f as shown in FIG.
The hooking portion 2f is formed in a through hole shape at a position near the center in the rotor circumferential direction (position near the left and right center in FIG. 3) on the outer side of the back plate 2 in the rotor radial direction (upward in FIG. 3). Then, both ends of a return spring 21 (see FIG. 2) that urges the inner pad 1a and the outer pad 1b in a separating direction are respectively latched by the latching portion 2f of the inner pad 1a and the latching portion 2f of the outer pad 1b. Form may be sufficient. And the form by which the return spring 21 is latched also in each of the latching part 2b of the inner pad 1a and the latching part 2b of the outer pad 1b may be sufficient.

The disc brake 10 is formed as described above.
That is, the elastic member 4 is attached to the rotor 1 side of the pad 1 as shown in FIG. The elastic member 4 elastically contacts a part of the caliper (support member) 11 to urge the pad 1 from the rotor turn-in side toward the rotor turn-out side, and the outer edge of the pad 1 on the rotor turn-out side Is pressed against the second torque receiving portion 11c of the caliper 11, and the biasing direction is substantially from the centroid G of the pad 1 to the rotor rotation tangent at the centroid G. .
Therefore, the urging direction of the pad by the elastic member is from the centroid of the pad to the rotor rotation tangent at the centroid. That is, it is in the same direction as the direction of the force received when the pad is pressed by the rotor.
Therefore, the direction of the force received by the pad before and after being pressed by the rotor does not change or hardly changes. Therefore, the pad is preferably prevented from rattling with respect to the support member. Thus, the squealing of the brake can be effectively prevented.

Therefore, the urging direction of the pad by the elastic member 4 is from the centroid G of the pad 1 to the rotor rotation tangent at the centroid G. That is, the direction of the force received when the pad 1 is pressed by the rotor is the same direction.
Therefore, the direction of the force applied to the pad 1 before and after being pressed by the rotor does not change or hardly changes. Therefore, the pad 1 is preferably prevented from rattling with respect to the caliper 11. Thus, squeaking of the brake can be suitably suppressed.

  As shown in FIGS. 4 and 6, the elastic member 4 has a radially extending portion 4 a that extends in the rotor radial direction along the outer edge of the back plate 2 on the rotor insertion side. The radially extending portion 4a is supported by the outer latching portion 2d and the inner latching portion 2c of the back plate 2, and swells in the circumferential direction of the rotor between both the latching portions 2c and 2d, with respect to the caliper 11. And elastically abut.

Accordingly, since the radially extending portion 4a of the elastic member 4 extends between the outer latching portion 2d and the inner latching portion 2c of the back plate 2, the direction in which the pad 1 is urged is changed. The centroid G of the pad 1 can be easily adjusted on the rotor tangent to the centroid G.
Thus, the elastic member 4 can urge the pad 1 substantially from the centroid G of the pad 1 to the rotor rotation tangent at the centroid G.

As shown in FIGS. 4 and 6, the elastic member 4 has a circumferentially extending portion 4 b, and the tip of the circumferentially extending portion 4 b is hooked to the back plate 2. The circumferentially extending portion 4b is configured to be elastically deformed by elastically contacting the radially extending portion 4a with a part of the caliper 11.
Therefore, when the radially extending portion 4a is elastically brought into contact with the caliper 11, both the radially extending portion 4a and the circumferentially extending portion 4b are elastically deformed. Therefore, the elastic member 4 can strongly bias the pad 1 by the elastic force of both extending portions. Thus, the backlash of the pad 1 can be reliably suppressed.

(Embodiment 2)
The second embodiment will be described with reference to FIGS.
The second embodiment is formed in the same manner as the first embodiment, but has an elastic member 6 shown in FIG. 7 instead of the elastic member 4 shown in FIG. The back plate 2 is formed with an outer recess 2g and an inner recess 2h shown in FIG. 7 instead of the latching portion 2d shown in FIG. The second embodiment will be described below with a focus on these differences.

As shown in FIG. 7, an outer recess 2g and an inner recess 2h are formed on the outer edge 2i of the back plate 2 on the rotor entry side.
The outer recess 2g is recessed in the rotor circumferential direction at a position radially outward of the rotor, and the inner recess 2h is recessed in the rotor circumferential direction at an inner position in the rotor radial direction.

As shown in FIG. 7, the elastic member 6 integrally includes an outer piece 6a, an inner piece 6b, a connecting piece 6c, and a pair of latching pieces 6d and 6e.
The elastic member 6 is formed by bending a leaf spring material as shown in FIG. 9, and the latching pieces 6d and 6e are formed by folding 60 and 61 into a mountain. And 62 and 63 are made into the diagonal mountain fold, and the "<"-shaped outer piece 6a and the inner piece 6b are formed. And the connection piece 6c is formed by making 64 and 65 into valley folds.

  As shown in FIG. 7, the outer piece 6a and the inner piece 6b are provided in the outer concave portion 2g and the inner concave portion 2h of the back plate 2, respectively. As shown in FIG. 8, the outer piece 6a and the inner piece 6b are elastically brought into contact with the first torque receiving portion 11b of the caliper 11 by attaching the pad 1 to the caliper 11, so that the pad 1 is brought into contact with the rotor from the rotor entrance side. It urges toward the rotor delivery side (from the right side to the left side in FIG. 8).

The connecting piece 6c connects the outer piece 6a and the inner piece 6b as shown in FIG. 7, and is in contact with the back surface (left side surface in FIG. 10) of the back plate 2 as shown in FIG.
The latching pieces 6d, 6e are in contact with the surface of the back plate 2 (the right side surface in FIG. 10), and slide on the front side surface of the back plate 2.
Thus, the elastic member 6 is latched to the back plate 2 by the latching pieces 6d and 6e and the connecting piece 6c.

  The elastic member 6 is configured to be able to adjust the urging direction of the pad 1 by adjusting the bending angle of the outer piece 6a and the inner piece 6b. Then, by adjusting the bending angle between the outer piece 6a and the inner piece 6b, the urging direction of the urging force F by the elastic member 6 is substantially on the rotor rotation tangent line from the centroid G of the pad 1 to the centroid G. Has been adjusted.

The disc brake is formed as described above.
That is, an outer recess 2g and an inner recess 2h are formed on the outer edge of the back plate 2 on the rotor entrance side 2i as shown in FIGS. The elastic member 6 includes an outer piece 6a, an inner piece 6b, and a connecting piece 6c, and the outer piece 6a and the inner piece 6b are configured to elastically contact the caliper 11, respectively.

Therefore, the elastic member 6 urges the pad 1 from the rotor turn-in side toward the rotor turn-out side by the outer piece 6a and the inner piece 6b. The outer piece 6a biases the pad 1 at a position radially outward of the rotor, and the inner piece 6b biases the pad 1 at a position radially inward of the rotor. Therefore, the elastic member 6 is configured to be able to urge the pad 1 from the centroid G of the pad 1 to the rotor rotation tangent at the centroid G by the outer piece 6a and the inner piece 6b.
Thus, the elastic member 6 can urge the pad 1 substantially from the centroid G of the pad 1 to the rotor rotation tangent at the centroid G.

(Other embodiments)
The present invention is not limited to the first and second embodiments, and may be the following modes.
(1) The disc brake according to the first and second embodiments is a so-called opposed disc brake having a piston provided on the inner side and a piston provided on the outer side. However, it may be a floating disc brake. That is, it has a mounting (support member) attached to the vehicle body side and a caliper provided so as to be movable in the rotor axial direction with respect to the mounting, the caliper straddling the rotor in the rotor axial direction outside the outer periphery of the rotor, A disc brake in which a claw for pressing the outer pad is formed on the outer side of the caliper and a piston for pressing the inner pad is mounted on the inner side of the caliper. A hanger pin is attached to the caliper or the mounting, and the hanger The pad may be supported in a suspended manner with respect to the mounting via the pin. And the form by which the elastic member which concerns on Embodiment 1 or the elastic member which concerns on Embodiment 2 is attached to this pad may be sufficient.
(2) The elastic member according to Embodiment 1 has a radially extending portion and a circumferentially extending portion, and the circumferentially extending portion is folded back from a portion latched by the outer latching portion. Thus, it was a form extending in the rotor radial direction. However, the embodiment may be such that the circumferentially extending portion has a circumferentially extending portion that is folded back from a portion latched by the inner latching portion and extends in the rotor radial direction. Or the form which has the above-mentioned two circumferential direction extension part may be sufficient. Or the form which does not have these circumferential direction extension parts may be sufficient.
(3) The elastic member according to Embodiment 2 has a form having a connecting piece for connecting the outer piece and the inner piece. However, the outer piece and the inner piece may be formed separately, and these may be separately provided in the outer concave portion and the inner concave portion of the back plate.

1 is a top view of a disc brake according to Embodiment 1. FIG. FIG. 2 is a cross-sectional view taken along line AA in FIG. 1. It is a BB sectional view taken on the line in FIG. 2 is a partially enlarged view of an elastic member and a pad according to Embodiment 1. FIG. FIG. 5 is a partially enlarged view of an elastic member and a pad from the direction of arrow C in FIG. 4. FIG. 5 is a view corresponding to FIG. 4 for illustrating a state of the elastic member in a state where the pad is attached to the caliper. 6 is a partially enlarged view of an elastic member and a pad according to Embodiment 2. FIG. FIG. 8 is a view corresponding to FIG. 7 for illustrating a state of the elastic member in a state where the pad is attached to the caliper. 6 is a development view of an elastic member according to Embodiment 2. FIG. FIG. 8 is a partially enlarged view of the elastic member and the pad from the direction of arrow D in FIG. 7.

Explanation of symbols

1 ... Pad (1a ... Inner pad, 1b ... Outer pad)
2 ... Back plate 2b ... Outer central latching portion 2c ... Inner latching portion 2d ... Outer latching portion 2g ... Outer recess 2h ... Inward recess 3 ... Friction material 4, 6 ... Elastic member 4a ... Diameter Direction extension part 4b ... Circumferential extension part 4f ... Spiral part 6a ... Outer piece 6b ... Inner piece 6c ... Connection piece 10 ... Disc brake 11 ... Caliper (support member)
11b, 11c ... Torque receiving portion 16 ... Hanger pin G ... Centroid of pad R ... Rotor (disc rotor)

Claims (4)

A support member attached to a member on the vehicle body side, a friction material that is suspended and supported by the support member via a hanger pin, and generates a braking force by being pressed by a rotor that rotates together with the wheel, and the friction material a pad hanging type disk brake having a pad that consists of a large back plate slightly larger than the supporting back surface and said friction member,
An elastic member is attached to the rotor turn-in side of the back plate so as not to intervene between the surface extending in the circumferential direction of the outer edge of the back plate on the rotor turn-in side and the torque receiving portion ,
The elastic member elastically abuts on a part of the support member, urges the pad from the rotor turn-in side toward the rotor turn-out side, and supports the outer edge of the pad on the rotor turn-out side. A pad suspension characterized in that it is configured to press against a torque receiving portion of a member, and the biasing direction is substantially from the centroid of the pad to the rotor rotation tangent in the centroid. Type disc brake. The pad-suspended disc brake according to claim 1,
The elastic member has a radially extending portion that extends in the rotor radial direction along the outer edge of the back plate on the rotor turn-in side,
該径direction extending portion is thus supported on the outer side hooking portion formed on each rotor radially outer position near the rotor radially inboard position and the inner side hooking portion of the back plate, and wherein both pad suspended type disk brake, characterized that it is resiliently configured to abut against the support member bulges rotor circumferential direction between the hook portion. The pad-suspended disc brake according to claim 2,
The elastic member is out circumferentially extending extending rotor circumferential direction along the outer edge of the back plate is folded back from the stop was partially subjected to at least hand of the outer side the inner side hooking section and the hooking portion The tip of the circumferentially extending portion is hooked against the back plate,
Wherein the circumferential extension portion, the pad hanging type disk brake, characterized in that it is configured to be elastically deformed thereby elastically abut the radially extending portion in a part of the support member . The pad-suspended disc brake according to claim 1,
The rotor time inlet side edge of the front SL back plate, and the outboard recess is recessed in the rotor circumferential direction at the rotor radially outboard position, is recessed in the rotor circumferential direction at the rotor radially inboard location With an inward recess,
The elastic member includes an outer piece provided in the outer recessed portion, an inner piece provided in the inner recessed portion, and a connecting piece for connecting the outer piece and the inner piece. The pad-suspended disc brake is characterized in that the outer piece and the inner piece are elastically abutted against the support member, respectively.

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