JP7495287B2 - Guide plate assembly and friction pad assembly for disc brake - Google Patents

Description

The present invention relates to a guide plate assembly and a friction pad assembly for a disc brake.

Disc brake devices for railway vehicles include a disc rotor fixed to the axle, a disc brake friction pad assembly arranged opposite the disc rotor, and a brake caliper fixed to the vehicle frame that incorporates an actuator that drives the disc brake friction pad assembly toward and away from the disc rotor.

Such friction pad assemblies for disc brakes include those equipped with a brake lining (guide plate assembly) that has a lining holder that is attached to the brake caliper and a lining carrier plate (guide plate) that is attached to the lining holder and has a lining element (lining assembly) attached to the surface facing the disc rotor (see, for example, Patent Document 1).

In the above brake lining, the lining elements arranged on the lining carrier plate have friction linings (friction materials), and the friction linings are attached to the carrier elements (back plate portions). These lining elements are each attached to the lining carrier plate by a pin or the like.

Patent No. 6501890

However, in the above-mentioned brake lining, the lining carrier plate to which the lining elements are attached serves as a member for transmitting the pressing force and the braking torque during braking, and therefore the lining carrier plate needs to have a sufficient strength, which causes the mass of the lining carrier plate to increase.
In addition, since the carrier element (back plate portion) to which the friction lining is attached by sintering or the like is held on the lining carrier plate by a pin or the like, the brake lining in which the lining element is assembled to the lining carrier plate has a large overall thickness.

The present invention was made in consideration of the above situation, and its purpose is to provide a lightweight and compact guide plate assembly and friction pad assembly for disc brakes.

The above object of the present invention can be achieved by the following configuration.
(1) A guide plate assembly having a guide plate that receives braking torque, a friction material that contacts a disc rotor during braking, and a back plate portion fixed to a back surface of the friction material, characterized in that it comprises: at least one lining assembly that is supported in a swingable manner in a guide hole portion of the guide plate; a fall-out prevention mechanism that holds the lining assembly inserted into the guide hole portion so that it can move in the rotor axial direction and does not fall out; and a protrusion provided on the back surface of the back plate portion for swingably supporting the lining assembly pressed against the disc rotor by a lining holder.

According to the guide plate assembly having the above configuration (1), the lining assembly supported so as to be freely swingable in the guide hole of the guide plate is pressed against the disc rotor by the lining holder via the convex portion provided on the back side of the back plate. That is, the pressing force applied by the lining holder during braking is transmitted directly to the disc rotor by the lining assembly. Therefore, the pressing force applied during braking is not transmitted to the guide plate, and only the braking torque is transmitted. Therefore, the guide plate does not need to have a large strength capable of supporting the pressing force applied during braking, and the guide plate can be made lighter.
In addition, the lining assembly is held by the guide plate so that it can move in the rotor axial direction and does not fall out due to the fall-out prevention mechanism. Therefore, the guide plate assembly of this configuration can assemble multiple lining assemblies to the guide plate. This makes it easier to handle the guide plate assembly and improves maintainability.

(2) The guide plate assembly described in (1) above, characterized in that the plate fitting portion of the back plate portion and the guide hole portion are each formed in a non-circular shape and fitted together to prevent rotation of the lining assembly within the guide hole portion.

According to the guide plate assembly of the above configuration (2), the anti-rotation function for preventing the rotation of the lining assembly is achieved by fitting the plate fitting portion of the back plate portion formed in a non-circular shape with the guide hole portion. This makes it possible to prevent the lining assembly from rotating without increasing the number of parts. In other words, if the lining assembly rotates, it will not be possible to apply sufficient braking force to the disc rotor, so it is desirable to make the lining assembly non-rotatable relative to the guide plate.

(3) The guide plate assembly described in (2) above, characterized in that the outer peripheral surface of the plate fitting portion and the inner peripheral surface of the guide hole portion are formed with flat surfaces to prevent rotation of the lining assembly within the guide hole portion.

According to the guide plate assembly having the above configuration (3), the anti-rotation mechanism for preventing the rotation of the lining assembly is achieved by the flat surfaces formed on the outer peripheral surface of the plate fitting portion and the inner peripheral surface of the guide hole portion engaging with each other. Therefore, the anti-rotation mechanism for the lining assembly can be easily formed without increasing the number of parts.

(4) A guide plate assembly according to any one of (1) to (3) above, characterized in that a spring member is disposed between the front or back surface of the guide plate and the back plate portion, for biasing the lining assembly in one direction along the rotor axial direction relative to the guide plate.

According to the guide plate assembly having the above configuration (4), when the spring member is disposed between the surface of the guide plate and the back plate, a gap is generated between the convex portion of the back plate and the lining holder or the torque receiving plate attached to the lining holder, whereby the spring member elastically deforms to absorb the dimensional tolerance in the thickness direction of the lining assembly and prevent the lining assembly from wobbling. Therefore, in the guide plate assembly having this configuration, the contact of each lining assembly with the disc rotor is prevented from varying, and the generation of abnormal noise is suppressed. Therefore, each lining assembly can maintain stable braking characteristics without being affected by the dimensional tolerance in the thickness direction.
In addition, when the spring member is disposed between the back surface of the guide plate and the back plate portion, the spring force of the spring member presses the convex portion of the back plate portion against the lining holder or the torque receiving plate, improving responsiveness during braking.

(5) The guide plate assembly according to any one of (1) to (4) above, characterized in that the fall-out prevention mechanism has a lock plate that has an outer shape larger than the opening shape of the guide hole portion and is attached to the back surface of the back plate portion.

According to the guide plate assembly of the above configuration (5), a retaining flange portion with an outer diameter larger than the guide hole portion is integrally formed on the front side of the back plate portion, and a lock plate is attached to the back side of the back plate portion, so that the lining assembly inserted into the guide hole portion can be held in the rotor axial direction and prevented from falling out. Therefore, the fall-out prevention mechanism can be easily constructed.

(6) The guide plate assembly described in (5) above, characterized in that the protrusion is made of a joint member that is pressed into the back plate portion to fix the lock plate to the back surface of the back plate portion.

According to the guide plate assembly having the above configuration (6), the protrusion provided on the back side of the back plate is formed of a joint member that fixes the lock plate to the back side of the back plate. Therefore, by pressing the joint member into the back side of the back plate to fix the lock plate, the lining assembly inserted into the guide hole is held so that it does not fall out, and the protrusion can be easily formed on the back side of the back plate.

(7) A guide plate assembly as described in (5) above, characterized in that the lock plate is fixed to the back surface of the back plate portion by a rivet.

With the guide plate assembly of the above configuration (7), the lock plate can be easily fixed to the back surface of the back plate portion using inexpensive rivets.

(8) A guide plate assembly as described in (5) above, characterized in that the lock plate is fixed to the back surface of the back plate portion by a blind rivet.

According to the guide plate assembly having the above configuration (8), the lock plate can be easily fixed to the back surface of the back plate portion by a blind rivet. A guide plate assembly in which the lock plate is fixed by a blind rivet does not require the friction material to have a rivet recess for fixing the rivet, and the contact area of the friction material with the disc rotor is not reduced.

(9) The guide plate assembly described in (5) above, characterized in that the protrusion is made of a joint member that fixes the lock plate to the back surface of the back plate by means of a grommet at the tip that penetrates the back plate.

According to the guide plate assembly of the above configuration (9), the lock plate can be easily fixed to the back surface of the back plate by a joint member having a grommet at the tip, which holds the lining assembly inserted into the guide hole so that it does not fall out, and also makes it easy to form a convex portion on the back surface of the back plate.

(10) A guide plate assembly according to any one of (1) to (9) above, characterized in that a damping layer is provided on the back side of the guide plate.

According to the guide plate assembly of the above configuration (10), when it is attached to the lining holder, the vibrations propagating between the lining assembly and the lining holder are damped by the damping layer. The damping layer contributes to reducing noise caused by contact between the lining holder and the convex portion of the back plate. This dampens the vibrations generated during the braking process, suppressing squeal noise (so-called brake squeal). Furthermore, providing a damping layer on the guide plate assembly improves handling.

(11) A friction pad assembly for a disc brake, comprising: a guide plate assembly according to any one of (1) to (10) above; and a lining holder having a groove that fits into the peripheral portion of the guide plate to detachably hold the guide plate assembly, and supporting the protrusion on its surface so that it can swing.

According to the friction pad assembly for disc brakes configured as in (11) above, the guide plate assembly in which multiple lining assemblies are assembled to the guide plate is detachably held in the lining holder. Therefore, the friction pad assembly for disc brakes configured as described above makes it easy to replace the multiple lining assemblies assembled to the guide plate assembly, improving maintainability.

(12) A friction pad assembly for a disc brake, comprising: a guide plate assembly according to any one of (1) to (10) above; a torque receiving plate having a groove that fits into the peripheral portion of the guide plate to detachably hold the guide plate assembly and supports the protrusion on its surface so that it can swing; and an anchor plate that is provided on the back surface of the torque receiving plate and is inserted from the groove end into the lining holder having a dovetail-shaped fixing groove.

According to the friction pad assembly for disc brakes configured as in (12) above, the guide plate assembly in which multiple lining assemblies are assembled to a guide plate is detachably held by a torque receiving plate having an anchor plate. Therefore, the friction pad assembly for disc brakes configured as described above can detachably attach multiple types of guide plate assemblies with different guide plate shapes to the lining holder by inserting the anchor plate of the torque receiving plate into the dovetail-shaped fixing groove of the lining holder.

(13) A friction pad assembly for a disc brake as described in (11) above, characterized in that the plate fitting portion of the back plate is inserted and fitted into the guide hole portion, and the braking torque acting when the disc rotor and the friction material come into contact is transmitted from the plate fitting portion to the guide plate, and further transmitted from the anchor pin engagement portion of the guide plate to the anchor pin fitting portion of the lining holder by an anchor pin.

According to the friction pad assembly for disc brakes configured as in (13) above, the guide plate assembly fixed to the lining holder via the anchor pin can be replaced simply by removing the anchor pin, making it possible to reduce the weight of replacement parts and improving maintainability.

(14) A friction pad assembly for a disc brake as described in (12) above, characterized in that the plate fitting portion of the back plate is inserted and attached to the guide hole portion, and the braking torque acting when the disc rotor and the friction material come into contact is transmitted from the plate fitting portion to the guide plate, and further transmitted from the anchor pin engagement portion of the guide plate by an anchor pin to the anchor pin fitting portion of the torque receiving plate, and further transmitted from the anchor plate of the torque receiving plate to the fixing portion of the lining holder by an anchor plate fixing member.

According to the friction pad assembly for disc brakes configured as in (14) above, the guide plate assembly is fixed via an anchor pin to the torque receiving plate, which has an anchor plate fixed to the fixing portion of the lining holder by an anchor plate fixing member, and can be replaced simply by removing the anchor pin, which allows the replacement parts to be made lighter and improves maintainability.

(15) A friction pad assembly for a disc brake as described in (13) or (14) above, characterized in that the anchor pin engagement portion is formed in a semicircular shape to receive the braking torque.

According to the friction pad assembly for disc brakes having the above configuration (15), the anchor pin engagement portion that receives the braking torque in the direction opposite to the braking direction is formed in a semicircular shape, which prevents the guide plate from becoming larger than when the anchor pin engagement portion is formed in a circular shape.

(16) A friction pad assembly for a disc brake as described in (13) or (14) above, characterized in that, among the multiple anchor pin engagement portions, the anchor pin engagement portion that is located vertically lower when attached to a brake caliper is formed in a circular shape and receives the braking torque.

According to the friction pad assembly for a disc brake having the above configuration (16), the anchor pin engagement portions are formed in a circular shape, so that the anchor pin engagement portions can receive braking torque in opposing braking directions.
Furthermore, if the circular anchor pin engagement portion is located on the vertically upper side when attached to the brake caliper, the anchor pin arranged on the vertically upper side must also be attached and detached when attaching and detaching the guide plate assembly, which is not easy to do.In contrast, if the circular anchor pin engagement portion is located on the vertically lower side and the semicircular anchor pin engagement portion is located on the vertically upper side when attached to the brake caliper, it is only necessary to attach and detach the anchor pin arranged on the vertically lower side, which makes the attachment and detachment work easier.

(17) A friction pad assembly for a disc brake as described in (11) above, characterized in that a damping layer is provided on the surface side of the lining holder so as to face the protrusion.

According to the friction pad assembly for disc brakes having the configuration of (17) above, when the guide plate assembly is attached to the lining holder, the vibrations propagating between the lining assembly and the lining holder are damped by the damping layer. The damping layer contributes to reducing noise caused by contact between the lining holder and the convex portion of the back plate. This dampens the vibrations generated during the braking process, suppressing squeal noise (so-called brake squeal).

(18) A friction pad assembly for a disc brake as described in (12) above, characterized in that a damping layer is provided on the surface side of the torque receiving plate so as to face the protrusion.

According to the friction pad assembly for disc brakes having the configuration of (18) above, when the guide plate assembly is attached to the torque receiving plate, the vibrations propagating between the lining assembly and the torque receiving plate are damped by the damping layer. The damping layer contributes to reducing noise caused by contact between the torque receiving plate and the convex portion of the back plate. This dampens the vibrations generated during the braking process, suppressing squeal noise (so-called brake squeal).

(19) A friction pad assembly for a disc brake according to (13) or (14) above, characterized in that a damping layer facing the protrusion is provided on the surface side of the lining holder or the surface side of the torque receiving plate, and an anchor pin engagement hole is formed in the damping layer, through which the anchor pin penetrates the anchor pin engagement portion formed in a circular shape.

According to the friction pad assembly for disc brakes having the configuration of (19) above, the anchor pin engagement hole of the damping layer is penetrated by the anchor pin, and the damping layer is fixed to the lining holder or the torque receiving plate.

(20) A friction pad assembly for a disc brake as described in (17) or (18) above, characterized in that the damping layer is fixed to the lining holder or the torque receiving plate by a fastening member.

According to the disc brake friction pad assembly having the configuration (20) above, the damping layer is fixed to the lining holder or the torque receiving plate by a fastening member.

(21) A friction pad assembly for a disc brake as described in (17) or (18) above, characterized in that the damping layer is fixed to the lining holder or the torque receiving plate by an adhesive.

According to the friction pad assembly for a disc brake having the configuration (21) above, the damping layer is fixed to the lining holder or the torque receiving plate by an adhesive.

The guide plate assembly and disc brake friction pad assembly of the present invention can realize a lightweight and compact guide plate assembly and disc brake friction pad assembly.

The present invention has been briefly described above. The details of the present invention will become clearer by reading the following description of the embodiment of the invention (hereinafter referred to as "embodiment") with reference to the attached drawings.

1 is a perspective view of a guide plate assembly according to a first embodiment of the present invention, as viewed from the front side. FIG. 2 is a perspective view of the guide plate assembly shown in FIG. 1 as seen from the back side. FIG. 2A is a cross-sectional view of the lining assembly shown in FIG. 1 , and FIG. 2B is an exploded perspective view of the lining assembly shown in FIG. 1 . 2 is an exploded perspective view of a main portion for explaining a lining assembly attached to the guide plate shown in FIG. 1 . FIG. 2A and 2B are a cross-sectional view and an exploded perspective view of a main portion for explaining a modified example of the lining assembly shown in FIG. 1 . 1A to 1C are a front view, a cross-sectional view taken along line A-A, and an exploded perspective view for explaining another modified example of the lining assembly shown in FIG. 1, and FIG. 1D is a perspective view for explaining the joint member shown in FIG. 1A and 1B are a front view and a cross-sectional view taken along line B-B for explaining another modified example of the lining assembly shown in FIG. 1, and FIG. 1C is a cross-sectional view for explaining another modified example of the lining assembly shown in FIG. 1. (a) and (b) are a front view and a cross-sectional view taken along the line CC for explaining another modified example of the lining assembly shown in FIG. 13A and 13B are a front perspective view and a rear perspective view of a torque receiving plate according to a second embodiment of the present invention. FIG. 11 is a perspective view of a torque receiving plate according to the second embodiment and a guide plate assembly according to the first embodiment. 1A is a perspective view of a friction pad assembly for a disc brake in which a guide plate assembly according to the first embodiment is assembled to a torque receiving plate according to the second embodiment, as viewed from the front side, and FIG. 1B is a cross-sectional view taken along the line D-D of FIG. FIG. 12 is a schematic perspective view illustrating a state in which the disc brake friction pad assembly shown in FIG. 11 is mounted on a lining holder. This is a cross-sectional view taken along the line E-E in FIG. FIG. 2 is a perspective view showing a guide plate assembly according to a modified example of the first embodiment shown in FIG. 1 . 13A and 13B are perspective views of a lining holder according to a third embodiment of the present invention, as viewed from the front side and the back side, respectively. FIG. 13 is a perspective view, seen from the front side, of a friction pad assembly for a disc brake in which the guide plate assembly according to the first embodiment is assembled to the lining holder according to the third embodiment. FIG. 10 is a perspective view of a guide plate assembly according to a fourth embodiment of the present invention, as viewed from the back side. FIG. 18 is an exploded perspective view of the guide plate assembly shown in FIG. 17. 13A is a perspective view of a torque receiving plate according to a fifth embodiment of the present invention, as viewed from the front side, and FIG. 13B is a perspective view of a torque receiving plate according to a modified example of the fifth embodiment, as viewed from the front side. 13A is a perspective view of a lining holder according to a sixth embodiment of the present invention, as viewed from the front side, and FIG. 13B is a perspective view of a lining holder according to a modified example of the sixth embodiment, as viewed from the front side.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
A friction pad assembly for disc brakes (hereinafter simply referred to as "friction pad assembly") equipped with a guide plate assembly according to this embodiment is used in disc brake devices for railway vehicles, is disposed opposite the disc rotor on the axle, and is driven toward and away from the disc rotor by an actuator built into a brake caliper fixed to the body frame. Of course, the friction pad assembly for disc brakes of the present invention is not limited to disc brake devices for railway vehicles.

Figures 1 and 2 are perspective views of the guide plate assembly 1 according to the first embodiment of the present invention, as viewed from the front and back. Figure 3(a) is a cross-sectional view of the lining assembly 10 shown in Figure 1, and Figure 3(b) is an exploded perspective view of the lining assembly 10 shown in Figure 1. Figure 4 is an exploded perspective view of the main parts of the lining assembly 10 to be attached to the guide plate 3 shown in Figure 1.

As shown in Figures 1 to 4, the guide plate assembly 1 of this first embodiment comprises a guide plate 3 that receives braking torque, and at least one lining assembly 10 (20 in this embodiment) supported so as to be freely swingable in the guide hole portion 5 of the guide plate 3.
The guide plate 3 has a plurality of guide holes 5 (20 holes) formed at a predetermined interval, and a lining assembly 10 is attached to each guide hole 5. The guide plate 3 is formed of a flat plate material having a predetermined thickness capable of receiving the braking torque acting on the lining assembly 10 attached to each guide hole 5 during braking.

The guide plate 3 has a semicircular anchor pin engagement portion 7 at its upper longitudinal end, which is located vertically on the upper side when attached to a brake caliper (not shown). The guide plate 3 has a circular anchor pin engagement portion 9 at its lower longitudinal end, which is located vertically on the lower side when attached to a brake caliper (not shown).

The lining assembly 10 is supported so as to be freely swingable by a guide plate 3 which receives braking torque, and is pressed against the disk rotor by a lining holder 140 (301) which will be described later.
As shown in FIG. 3 , the lining assembly 10 includes a friction material 11 molded into a substantially circular plate shape, a back plate portion 12 fixed to the back surface of the friction material 11, a protrusion 20 provided on the back surface side of the back plate portion 12 for swingably supporting the lining assembly 10 pressed against the disc rotor by a lining holder 140 (301), and a fall-out prevention mechanism for holding the lining assembly 10 inserted into the guide hole portion 5 so that it can move in the rotor axial direction X and not fall out.

The friction material 11 is pressed against the disc rotor during braking. The lining assembly 10 transmits the braking torque acting when the friction material 11 is pressed against the disc rotor from the plate fitting portion 15 to the guide plate 3 by fitting the plate fitting portion 15 into the guide hole portion 5.

The back plate portion 12 is integrally formed with a plate fitting portion 15 whose outer peripheral surface fits freely into a substantially circular guide hole portion 5 formed through the guide plate 3, and a non-slip flange portion 13 located on the front surface side of the back plate portion 12 and having an outer diameter larger than that of the guide hole portion 5.
A flat surface 16 is formed on the outer peripheral surface of the plate fitting portion 15 as shown in Fig. 3(b), and a flat surface 6 is formed on the inner peripheral surface of the guide hole portion 5 as shown in Fig. 4. The flat surface 16 of the plate fitting portion 15 inserted into the guide hole portion 5 engages with the flat surface 6 of the guide hole portion 5. In other words, the plate fitting portion 15 of the back plate portion 12 formed in a non-circular shape by the flat surfaces 16 and 6 is fitted into the guide hole portion 5, thereby achieving a rotation prevention function for preventing rotation of the lining assembly 10 within the guide hole portion 5.
In addition, it is desirable that the plate fitting portion 15 be formed in a curved shape that is convex toward the guide hole portion 5 so that the oscillating movement of the lining assembly 10 due to sliding contact with the guide hole portion 5 is smooth.

A circular lock plate 17 having an outer shape larger than the opening shape of the guide hole 5 is fixed to the back surface of the back plate 12. The lock plate 17 is fixed to the back surface of the back plate 12 by inserting the plate fitting portion 15 into the guide hole 5 of the guide plate 3, and then pressing the shaft portion of a flanged pin-shaped joint member 22 that passes through a through hole 17a into a fixing hole 14 provided on the back surface of the back plate 12.
The joint member 22 has a head portion that protrudes from the rear surface side of the back plate portion 12 and serves as a protrusion 20 for supporting the lining assembly 10 so that the lining assembly 10 can swing.

By fixing the lock plate 17 to the back surface of the back plate 12, the lining assembly 10 inserted into the guide hole 5 from the front surface 3a side of the guide plate 3 is held by the retaining flange 13 of the back plate 12 and the lock plate 17 so that it can move in the rotor axial direction X relative to the guide plate 3 and cannot fall out. In other words, the retaining flange 13 and the lock plate 17 form a mechanism to prevent the lining assembly 10 from falling out.

An annular spring member 25 is fitted into the plate fitting portion 15. The spring member 25 is made of an annular leaf spring. The outer diameter of the spring member 25 is set to be larger than the guide hole portion 5. As shown in FIG. 4, each lining assembly 10 is fitted with the plate fitting portion 15 inserted into the guide hole portion 5 from the front surface 3a side of the guide plate 3. The spring member 25 fitted into the plate fitting portion 15 is then sandwiched between the guide plate 3 and the retaining flange portion 13.

The guide plate assembly 1 according to the first embodiment has a configuration in which multiple lining assemblies 10 are arranged in a plane. In the guide plate assembly 1, the spring member 25 sandwiched between the retaining flange portion 13 of the lining assembly 10 and the guide plate 3 elastically deforms to absorb the dimensional tolerance in the thickness direction of the lining assembly 10. Therefore, in the guide plate assembly 1, the contact of each lining assembly 10 with the disc rotor is prevented from varying. Therefore, each lining assembly 10 can maintain stable braking characteristics without being affected by the dimensional tolerance in the thickness direction.

In addition, a convex portion 20 is provided on the back side of the back plate portion 12. The lining assembly 10, which is supported so as to be able to swing freely in the guide hole portion 5 of the guide plate 3, is pressed against the disk rotor by the lining holder 140 (301) via the convex portion 20 provided on the back side of the back plate portion 12.

Therefore, according to the guide plate assembly 1 of the first embodiment, the lining assembly 10 supported so as to be freely swingable in the guide hole portion 5 of the guide plate 3 is pressed against the disc rotor by the lining holder 140 (301) via the convex portion 20 provided on the back surface side of the back plate portion 12. Then, the pressing force by the lining holder 140 (301) during braking is transmitted directly to the disc rotor by the lining assembly 10.
Therefore, the pressing force during braking is not transmitted, but only the braking torque is transmitted to the guide plate 3. Therefore, the guide plate 3 does not need to have a large strength capable of supporting the pressing force during braking, and the guide plate 3 can be made lighter.

Furthermore, the lining assembly 10 according to this first embodiment is held by the guide plate 3 so as to be movable in the rotor axial direction X and not to fall out due to an anti-fall-out mechanism consisting of the anti-fall-out flange portion 13 of the back plate portion 12 and the lock plate 17.
Therefore, in the guide plate assembly 1 of the first embodiment, a plurality of lining assemblies 10 can be assembled to the guide plate 3. Therefore, the guide plate assembly 1 can be easily handled, and maintainability is improved.

In the guide plate assembly 1 according to the first embodiment, the plate fitting portion 15 of the back plate portion 12 and the guide hole portion 5 are each formed in a non-circular shape and fitted together, thereby preventing rotation of the lining assembly 10 in the guide hole portion 5. More specifically, the outer peripheral surface of the plate fitting portion 15 and the inner peripheral surface of the guide hole portion 5 are formed with anti-rotation flat surfaces 16 and 6, respectively, for preventing rotation of the lining assembly 10 in the guide hole portion 5.
Therefore, according to the guide plate assembly 1 of the first embodiment, a rotation stopper for preventing rotation of the lining assembly 10 is achieved by the engagement of the flat surfaces 16, 6 formed on the outer peripheral surface of the plate fitting portion 15 and the inner peripheral surface of the guide hole portion 5. Thus, the rotation stopper for the lining assembly 10 can be easily formed without increasing the number of parts. In other words, if the lining assembly 10 rotates, it will not be possible to apply a sufficient braking force to the disc rotor, so it is desirable to make the lining assembly 10 non-rotatable relative to the guide plate 3.

In addition, in the guide plate assembly 1 according to the first embodiment, a spring member 25 is disposed between the surface 3a of the guide plate 3 and the anti-slip flange portion 13 of the back plate portion 12, for biasing the lining assembly 10 toward the disk rotor side (the left side in (a) of Figure 3), which is one side along the rotor axial direction X relative to the guide plate 3.
Therefore, according to the guide plate assembly 1 of the first embodiment, the spring member 25 is disposed between the surface 3a of the guide plate 3 and the back plate portion 12, and a gap is generated between the lining holder 301 or the torque receiving plate 101 described later and the convex portion 20 of the back plate portion 12, whereby the spring member 25 is elastically deformed to absorb the dimensional tolerance in the thickness direction (rotor axial direction X) of the lining assembly 10. Therefore, in the guide plate assembly 1 of the first embodiment, the occurrence of variation in the contact of each lining assembly 10 with the disc rotor is prevented, and the occurrence of abnormal noise is suppressed. Therefore, each lining assembly 10 can maintain stable braking characteristics without being affected by the dimensional tolerance in the thickness direction.

In addition, according to the guide plate assembly 1 of the first embodiment, the convex portion 20 provided on the back side of the back plate portion 12 is configured with a joint member 22 that fixes the lock plate 17 to the back side of the back plate portion 12. That is, the head of the joint member 22 that protrudes from the back side of the back plate portion 12 becomes the convex portion 20 for supporting the lining assembly 10 so that it can swing. Therefore, by pressing the joint member 22 into the fixing hole 14 provided on the back side of the back plate portion 12 to fix the lock plate 17, the lining assembly 10 inserted into the guide hole portion 5 is held so that it does not fall out, and the convex portion 20 can be easily configured on the back side of the back plate portion 12.

5(a) and 5(b) are a cross-sectional view and an exploded perspective view of a main portion for explaining a modified example of the lining assembly 10 shown in FIG.
As shown in Figures 5(a) and (b), the lining assembly 10 relating to the modified example can also have a spring member 25 disposed between the back surface 3b of the guide plate 3 and a lock plate 17 fixed to the back surface of the back plate portion 12, which biases the lining assembly 10 toward the opposite side to the disc rotor (the right side in Figure 5(a)), which is the other side along the rotor axial direction X relative to the guide plate 3.
According to the guide plate assembly 1 having such a configuration, the spring member 25 is disposed between the rear surface 3b of the guide plate 3 and the back plate portion 12, so that the spring force of the spring member 25 presses the convex portion 20 of the back plate portion 12 against the lining holder 301 or the torque receiving plate 101 described later, thereby improving responsiveness during braking.

Figures 6(a) to (c) are a front view, a cross-sectional view along the line A-A, and an exploded perspective view for explaining another modification of the lining assembly 10 shown in Figure 1, and (d) is a perspective view for explaining the joint member 32 shown in (c). Note that components similar to those of the lining assembly 10 described above are given the same reference numerals and detailed explanations are omitted.

A lining assembly 10A relating to another modified example has a convex portion 20 consisting of a joint member 32 that fixes the lock plate 17 to the back surface of the back plate portion 12 by a grommet 33 at the tip that penetrates a stepped fixing hole 14A in the back plate portion 12, as shown in (a) to (c) of Figures 6(a) to 6(c).
6(d), the joint member 32 is formed by inserting the shaft portion through the through hole 17a of the lock plate 17 and the stepped fixing hole 14 of the back plate 12, and then inserting a jig from the opening 11a formed in the friction material 11 and bending the eyelet 33 at the tip outwardly to engage with the step portion. Thus, the joint member 32 fixes the lock plate 17 to the back surface of the back plate 12, and the head portion protruding from the back surface side of the back plate 12 becomes the convex portion 20 for supporting the lining assembly 10A so that it can swing.

Therefore, with the lining assembly 10A of this configuration, the lock plate 17 can be easily fixed to the back surface of the back plate portion 12 by the joint member 32 having a grommet 33 at the tip, which holds the lining assembly 10A inserted into the guide hole portion 5 so that it does not fall out, and the protrusion 20 can be easily formed on the back surface of the back plate portion 12.

Figures 7(a) and (b) are a front view and a cross-sectional view taken along line B-B for explaining another modified example of the lining assembly 10 shown in Figure 1, and (c) is a cross-sectional view for explaining another modified example of the lining assembly 10 shown in Figure 1. Note that components similar to those of the lining assembly 10 described above are given the same reference numerals and detailed explanations are omitted.

As shown in (a) and (b) of FIG. 7, in the lining assembly 10B according to another modified example, the convex portion 20 provided on the back side of the back plate portion 12 is constituted by a joint member 43. The joint member 43 has a disk-shaped base portion 43a placed on the recessed portion 12a of the back plate portion 12 and a pin-shaped shaft portion 43b that passes through a through hole 17a of a lock plate 17 having a smaller diameter than the base portion 43a. The joint member 43 is fixed to the back side of the back plate portion 12 by placing the base portion 43a on the recessed portion 12a of the back plate portion 12, and then fixing the lock plate 17 with the shaft portion 43b inserted through the through hole 17a to the back side of the back plate portion 12. That is, the shaft portion 43b of the joint member 43 protruding from the back side of the back plate portion 12 becomes the convex portion 20 for supporting the lining assembly 10B so that it can swing.

The lock plate 17 of this configuration is fixed to the rear surface of the back plate portion 12 by rivets 45 that pass through the fixing holes 17 b of the lock plate 17 and the fixing holes 14 of the back plate portion 12 .
Therefore, the lock plate 17 can be easily fixed to the rear surface of the back plate portion 12 by the inexpensive rivet 45. However, the friction material 11 needs to be provided with a rivet recess 18 for fixing the rivet 45.

As shown in (c) of Figure 7, in another modified lining assembly 10C, the convex portion 20 provided on the back side of the back plate portion 12 is formed of a joint member 43, similar to the above-mentioned lining assembly 10B.
The lock plate 17 of the lining assembly 10C is fixed to the rear surface of the back plate portion 12 by a blind rivet 53 which passes through the fixing hole 17b of the lock plate 17 and the fixing hole 14 of the back plate portion 12.

Therefore, the lining assembly 10C, in which the lock plate 17 is fixed by the blind rivet 53, does not require the provision of a rivet recess 18 in the friction material 11 for fixing the rivet 45 as in the above-mentioned lining assembly 10B, and the contact area of the friction material 11 with the disc rotor is not reduced.

8(a) and 8(b) are a front view and a cross-sectional view taken along the line CC for explaining another modification of the lining assembly 10 shown in Fig. 1. Note that the same components as those of the lining assembly 10 described above are given the same reference numerals and detailed explanations are omitted.
As shown in (a) and (b) of Figures 8, a lining assembly 10D according to another modified example includes a friction material 11 molded into a substantially circular plate shape having an outer diameter large enough to pass through the guide hole portion 5, a back plate portion 12A fixed to the back surface of the friction material 11, a protrusion 20 provided on the back surface of the back plate portion 12A for swingably supporting the lining assembly 10D pressed against the disc rotor by the lining holder 140 (301), and a falling-out prevention mechanism for holding the lining assembly 10D inserted into the guide hole portion 5 so that it can move in the rotor axial direction X and not fall out.

The protrusion 20 is formed by the head of the joint member 22 that is pressed into the fixing hole 14 provided on the back surface of the back plate portion 12A and protrudes to the back surface side. Since the joint member 22 is formed separately from the back plate portion 12A, it is possible to select an optimal material with excellent abrasion resistance, etc. as the protrusion 20 for supporting the lining assembly 10D so that it can swing.

The back plate portion 12A is integrally formed with a plate fitting portion 15 that fits freely to swing into a substantially circular guide hole portion 5 whose outer peripheral surface is formed through the guide plate 3, and a non-slip flange portion 13 that is located on the back side of the back plate portion 12A and has an outer diameter larger than that of the guide hole portion 5.
An annular groove 19 in which a snap ring 51 is fitted is formed on the outer circumferential surface of the plate fitting portion 15 .

A snap ring 51 having an outer shape larger than the opening shape of the guide hole 5 and an inner shape smaller than the outer diameter of the plate fitting portion 15 is attached to the annular groove 19 of the plate fitting portion 15 in the back plate portion 12A.
By mounting the snap ring 51 in the annular groove 19 of the plate fitting portion 15 in the back plate portion 12A, the lining assembly 10D inserted into the guide hole portion 5 from the back surface 3b side of the guide plate 3 is held by the retaining flange portion 13 of the back plate portion 12A and the snap ring 51 so as to be movable in the rotor axial direction X relative to the guide plate 3 and not to fall out. In other words, the retaining flange portion 13 and the snap ring 51 constitute a falling-out prevention mechanism.

The spring member 25 fitted into the plate fitting portion 15 is sandwiched between the guide plate 3 and the snap ring 51, and elastically deforms to absorb the dimensional tolerance in the thickness direction of the lining assembly 10D.

Figures 9(a) and (b) are perspective views from the front and back of a torque receiving plate 101 according to a second embodiment of the present invention. Figure 10 is a perspective view of the torque receiving plate 101 according to the second embodiment and the guide plate assembly 1 according to the first embodiment. Figure 11(a) is a perspective view from the front of a friction pad assembly 100 for disc brakes in which the guide plate assembly 1 according to the first embodiment is assembled to the torque receiving plate 101 according to the second embodiment, and Figure 11(b) is a cross-sectional view taken along the line D-D of Figure 11(a).

9(a) and 9(b), the torque receiving plate 101 according to the second embodiment is provided with a plurality of grooves 105 which fit into the peripheral portion of the guide plate 3 to detachably hold the guide plate assembly 1, and the front surface 101a supports the protrusion 20 of the lining assembly 10 so that the protrusion 20 can swing. The back surface 101b of the torque receiving plate 101 is provided with an anchor plate 120 which is inserted from the groove end into a lining holder 140 (see FIG. 13) which is provided with a dovetail-shaped fixing groove 141.
A pair of anchor pin fitting portions 110 formed as circular holes are formed at both ends of the torque receiving plate 101 in the longitudinal direction.

As shown in FIG. 10, the guide plate assembly 1 is configured such that the peripheral portion of the guide plate 3 is fitted into the groove portion 105 from one longitudinal end side of the torque receiving plate 101. As shown in FIG. 11(a) and (b), the back surface 3b of the guide plate 3 is overlapped so as to face the front surface 101a of the torque receiving plate 101, thereby forming the friction pad assembly 100 for disc brakes.

The guide plate 3 held in the groove portion 105 of the torque-receiving plate 101 defines an internal space S between the guide plate 3 and the surface 101a of the torque-receiving plate 101, as shown in FIG. 11(b), which allows the lining assembly 10 to swing.
The guide plate assembly 1 is fixed to the torque-receiving plate 101 by the anchor pins 130, which are respectively inserted into a pair of anchor pin fitting portions 110 of the torque-receiving plate 101, passing through the anchor pin engagement portion 9 of the guide plate 3 and engaging with the anchor pin engagement portion 7.

Fig. 12 is a schematic perspective view illustrating a state in which the friction pad assembly 100 for a disc brake shown in Fig. 11 is assembled to a lining holder 140. Fig. 13 is a cross-sectional view taken along line E-E in Fig. 12.
The friction pad assembly 100 for disc brakes is attached to a lining holder 140 of a caliper, as shown in Figures 12 and 13. An anchor plate 120 is fixed to a rear surface 101b of the torque receiving plate 101 by a rivet 133. The friction pad assembly 100 for disc brakes is attached by inserting the anchor plate 120, from its groove end, into a dovetail-shaped fixing groove 141 formed in a brake pad mounting portion 143 of the lining holder 140 (mounting surface of the lining holder 140 on the disc rotor side).

In the friction pad assembly 100 for a disc brake, the rear surface 101 b of the torque receiving plate 101 is in close contact with the brake pad mounting portion 143 of the lining holder 140 .
The lining assembly 10, which is supported so as to be freely swingable in the guide hole portion 5 of the guide plate 3, is pressed against the disc rotor by the lining holder 140 via the convex portion 20 provided on the back side of the back plate portion 12. The pressing force applied by the lining holder 140 during braking is transmitted directly to the disc rotor by the lining assembly 10. Therefore, the pressing force applied during braking is not transmitted to the guide plate 3, and only the braking torque is transmitted.

According to the friction pad assembly 100 for disc brakes, the guide plate assembly 1, in which multiple lining assemblies 10 are assembled to the guide plate 3, is detachably held by the torque receiving plate 101 having the anchor plate 120. Therefore, the friction pad assembly 100 for disc brakes of this configuration can detachably attach multiple types of guide plate assemblies 1 with different shapes of guide plate 3 to the lining holder 140 by inserting the anchor plate 120 of the torque receiving plate 101 into the dovetail-shaped fixing groove 141 of the lining holder 140.

In the disc brake friction pad assembly 100, the plate fitting portion 15 of the back plate portion 12 is inserted and attached into the guide hole portion 5 of the guide plate 3, and the braking torque acting when the disc rotor and the friction material 11 come into contact is transmitted from the plate fitting portion 15 to the guide plate 3, and then from the anchor pin engagement portions 7 and 9 of the guide plate 3 to the anchor pin fitting portion 110 of the torque receiving plate 101 by the anchor pin 130, and then from the anchor plate 120 of the torque receiving plate 101 to the brake pad attachment portion 143, which is the fixing portion of the lining holder 140, by the anchor plate fixing member 145.

The guide plate assembly 1, which is fixed via the anchor pin 130 to the torque receiving plate 101, in which the anchor plate 120 is fixed by the anchor plate fixing member 145 to the brake pad mounting portion 143 of the lining holder 140, can be replaced simply by removing the anchor pin 130, making it possible to reduce the weight of replacement parts and improving maintainability.

In addition, according to the friction pad assembly 100 for disc brakes, the anchor pin engagement portion 7 of the guide plate 3, which faces the braking direction and receives the braking torque, is formed in a semicircular shape, which prevents the guide plate 3 from becoming larger than the anchor pin engagement portion 9, which is formed in a circular shape.

Furthermore, in the friction pad assembly 100 for disc brakes, of the multiple anchor pin engagement portions 7, 9 on the guide plate 3, the anchor pin engagement portion 9 that is located vertically lower when attached to the brake caliper is formed in a circular shape and receives braking torque.
According to the friction pad assembly 100 for a disc brake, the anchor pin engaging portion 9 is formed in a circular shape, so that the anchor pin engaging portion 9 can receive braking torque in opposing directions of braking.

Furthermore, if the circular anchor pin engagement portion 9 is located on the vertically upper side when attached to the brake caliper, the anchor pin 130 arranged on the vertically upper side must also be attached and detached when attaching and detaching the guide plate assembly 1, which is not easy to do. In contrast, if the circular anchor pin engagement portion 9 is located on the vertically lower side and the semicircular anchor pin engagement portion 7 is located on the vertically upper side when attached to the brake caliper, it is only necessary to attach and detach the anchor pin 130 arranged on the vertically lower side, which makes the attachment and detachment work easier. Note that the anchor pin engagement portion 7 on the vertically upper side can be omitted, and braking torque can be received only by the anchor pin engagement portion 9 on the vertically lower side.

Fig. 14 is a perspective view showing a guide plate assembly 1A according to a modified example of the first embodiment shown in Fig. 1. Note that the same components as those in the guide plate assembly 1 described above are given the same reference numerals and detailed description thereof will be omitted.
14, in the guide plate assembly 1A, a pair of anchor pin engagement portions 7, 7 formed at both longitudinal ends of the guide plate 3A are each formed in a semicircular shape. Therefore, the guide plate assembly 1A can be made smaller and lighter than the guide plate assembly 1 described above.

Figures 15(a) and 15(b) are perspective views from the front and back of a lining holder 301 according to the third embodiment of the present invention. Figure 16 is a perspective view from the front of a friction pad assembly 200 for disc brakes in which a guide plate assembly 1 according to the first embodiment is assembled to a lining holder 301 according to the third embodiment.

15(a) and 15(b), the lining holder 301 according to the third embodiment is provided with a plurality of grooves 305 which fit into the peripheral portion of the guide plate 3 to detachably hold the guide plate assembly 1, and supports the protrusion 20 of the lining assembly 10 on its front surface 301a so that it can swing. A brake pad mounting portion 320 which is attached to a caliper is provided on a back surface 301b of the lining holder 301.
A pair of anchor pin fitting portions 310 formed as circular holes are formed at both longitudinal ends of the lining holder 301 .

The guide plate assembly 1 is constructed by fitting the peripheral portion of the guide plate 3 into the groove portion 305 from one longitudinal end side of the lining holder 301. Then, as shown in FIG. 16, the back surface 3b of the guide plate 3 is overlapped so as to face the front surface 301a of the lining holder 301, thereby forming the disc brake friction pad assembly 200.

The guide plate 3 held in the groove 305 of the lining holder 301 defines an internal space S between itself and the surface 301a of the lining holder 301, allowing the lining assembly 10 to swing.
The guide plate assembly 1 is fixed to the lining holder 301 and the torque-receiving plate 101 by the anchor pins 130, which are respectively inserted into a pair of anchor pin fitting portions 310 of the lining holder 301, passing through the anchor pin engagement portion 9 of the guide plate 3 and engaging with the anchor pin engagement portion 7.

The lining assembly 10, which is supported so as to be freely swingable in the guide hole 5 of the guide plate 3, is pressed against the disc rotor by the lining holder 301 via the protrusion 20 provided on the back side of the back plate 12. The pressing force applied by the lining holder 301 during braking is transmitted directly to the disc rotor by the lining assembly 10. Therefore, the pressing force applied during braking is not transmitted to the guide plate 3, and only the braking torque is transmitted.

According to the friction pad assembly 200 for disc brakes, the guide plate assembly 1, in which multiple lining assemblies 10 are assembled to the guide plate 3, is detachably held in the lining holder 301. Therefore, the friction pad assembly 200 for disc brakes of this configuration makes it easy to replace the guide plate assembly 1, improving maintainability.

In the disc brake friction pad assembly 200, the plate fitting portion 15 of the back plate portion 12 is inserted into the guide hole portion 5 of the guide plate 3, and the braking torque acting when the disc rotor and the friction material 11 come into contact is transmitted from the plate fitting portion 15 to the guide plate 3, and further transmitted from the anchor pin engagement portions 7 and 9 of the guide plate 3 by the anchor pin 130 to the anchor pin fitting portion 310 of the lining holder 301.

According to the friction pad assembly 200 for disc brakes, the guide plate assembly 1 fixed to the lining holder 301 via the anchor pin 130 can be replaced simply by removing the anchor pin 130, making it possible to reduce the weight of replacement parts and improving maintainability.

Figure 17 is a rear perspective view of a guide plate assembly 1B according to a fourth embodiment of the present invention. Figure 18 is an exploded perspective view of the guide plate assembly 1B shown in Figure 17. Note that components similar to those of the guide plate assembly 1A described above are given the same reference numerals and detailed descriptions are omitted.

In the guide plate assembly 1B according to the fourth embodiment, as shown in FIG. 17, a damping layer 70 that covers the convex portion 20 of the lining assembly 10 is provided on the rear surface 3b side of the guide plate 3A.
The damping layer 70 is formed with a uniform thickness. As shown in FIG. 18, the damping layer 70 is formed with a shape approximately similar to that of the guide plate 3A by following the rear surface 3b of the guide plate 3A. Fixing holes 71 are drilled in the damping layer 70 for fixing the damping layer 70 with fastening members 80 via spacers 75 provided on the rear surface 3b of the guide plate 3A. The surface of the damping layer 70 is a flat surface parallel to the rear surface 3b of the guide plate 3A. The damping layer 70 is fixed to the rear surface 3b of the guide plate 3A by the fastening members 80.

The damping layer 70 can be, for example, a laminated shim in which a metal support plate and an elastic material are laminated together, and the damping layer 70 has a laminated structure with an appropriate elastic modulus in the in-plane and perpendicular directions. The laminated structure can be, for example, a structure in which rubber, which is an elastic material, a stainless steel plate, which is a metal support plate, an adhesive material, which is an elastic material, a cold-rolled steel plate, which is a metal support plate, and rubber, which is an elastic material, are laminated in this order. Of course, the damping layer 70 is not limited to the laminated structure of this embodiment, and various laminated structures or single-layer structures can be used as long as they can reduce noise by attenuating the vibrations propagating between the lining assembly 10 and the lining holder 140 (301).

According to the guide plate assembly 1B of the fourth embodiment, when it is attached to the lining holder 140 (301), the vibrations propagating between the lining assembly 10 and the lining holder 140 (301) are damped by the damping layer 70. The damping layer 70 contributes to reducing noise caused by contact between the lining holder 140 (301) and the convex portion 20 of the back plate portion 12. This dampens the vibrations generated during the braking process, suppressing squeal noise (so-called brake squeal).

Figure 19(a) is a perspective view of a torque receiving plate 101A according to the fifth embodiment of the present invention, as viewed from the front side, and Figure 19(b) is a perspective view of a torque receiving plate 101B according to a modified example of the fifth embodiment, as viewed from the front side. Note that components similar to those of the torque receiving plate 101 described above are given the same reference numerals and detailed descriptions are omitted.

As shown in FIG. 19A, a torque receiving plate 101A according to the fifth embodiment is provided with a damping layer 70 on a front surface 101a side, the damping layer 70 facing the protrusion 20 of the lining assembly 10.
The damping layer 70 is formed with a uniform thickness. The damping layer 70 is formed with a shape approximately similar to that of the torque receiving plate 101A by following the surface 101a of the torque receiving plate 101A. The surface of the damping layer 70 is a flat surface parallel to the surface 101a of the torque receiving plate 101A. The damping layer 70 is formed with an anchor pin engagement hole 73 through which an anchor pin 130 penetrates the anchor pin fitting portion 110 of the torque receiving plate 101A formed in a circular shape. Thus, the damping layer 70 is fixed to the surface 101a of the torque receiving plate 101A by the anchor pin 130.

As shown in FIG. 19B, in the torque receiving plate 101B according to the modified example of the fifth embodiment, the damping layer 70 is fixed to the surface 101a of the torque receiving plate 101B by a fastening member 80. The damping layer 70 may be fixed to the torque receiving plate 101B by an adhesive.

With these torque receiving plates 101A, 101B, when the guide plate assembly 1 is attached to the torque receiving plate 101A (101B), the vibrations propagating between the lining assembly 10 and the torque receiving plate 101A (101B) are damped by the damping layer 70. The damping layer 70 contributes to reducing noise caused by contact between the torque receiving plate 101A (101B) and the convex portion 20 of the back plate portion 12. This dampens the vibrations generated during the braking process, suppressing squeal noise (so-called brake squeal).

Figure 20(a) is a perspective view of a lining holder 301A according to the sixth embodiment of the present invention, as viewed from the front side, and Figure 20(b) is a perspective view of a lining holder 301B according to a modification of the sixth embodiment, as viewed from the front side. Note that components similar to those of the lining holder 301 described above are given the same reference numerals and detailed descriptions are omitted.

As shown in FIG. 20(a), a lining holder 301A according to the sixth embodiment has a damping layer 70 on a front surface 301a side, the damping layer 70 facing the protrusion 20 of the lining assembly 10.
The damping layer 70 is formed with a uniform thickness. The damping layer 70 is formed with a shape approximately similar to that of the lining holder 301A by following the surface 301a of the lining holder 301A. The surface of the damping layer 70 is a flat surface parallel to the surface 301a of the lining holder 301A. The damping layer 70 is formed with an anchor pin engagement hole 73 through which the anchor pin 130 penetrates the anchor pin fitting portion 310 of the lining holder 301A formed in a circular shape. The damping layer 70 is fixed to the surface 301a of the lining holder 301A by the anchor pin 130.

As shown in FIG. 20(b), in the lining holder 301B according to the modified example of the sixth embodiment, the damping layer 70 is fixed to the surface 301a of the lining holder 301B by a fastening member 80. The damping layer 70 may be fixed to the lining holder 301B by an adhesive.

Therefore, the guide plate assemblies 1, 1A, 1B and disc brake friction pad assemblies 100, 200 according to this embodiment can realize a lightweight and compact guide plate assembly and disc brake friction pad assembly.

The present invention is not limited to the above-described embodiment, and can be modified, improved, etc. as appropriate. In addition, the material, shape, size, number, location, etc. of each component in the above-described embodiment are arbitrary as long as they can achieve the present invention, and are not limited.

1... Guide plate assembly 3... Guide plate 5... Guide hole portion 10... Lining assembly 11... Friction material 12... Back plate portion 13... Anti-slip flange portion 15... Plate fitting portion 17... Lock plate 20... Convex portion 22... Joint member 25... Spring member 100... Friction pad assembly for disc brake

Claims (25)

a back plate portion fixed to a back surface of the friction material, and comprising: at least one lining assembly supported in a swingable manner in a guide hole portion of the guide plate; a fall-out prevention mechanism for holding and assembling the lining assembly inserted into the guide hole portion so as to be movable in the rotor axial direction relative to the guide plate and to prevent it from falling out; and a protrusion provided on the back surface of the back plate portion for swingably supporting the lining assembly pressed against the disc rotor by a lining holder. The guide plate assembly according to claim 1, characterized in that the plate fitting portion of the back plate portion and the guide hole portion are each formed in a non-circular shape and fitted together to prevent the lining assembly from rotating within the guide hole portion. The guide plate assembly according to claim 2, characterized in that the outer peripheral surface of the plate fitting portion and the inner peripheral surface of the guide hole portion are formed with flat surfaces for preventing rotation of the lining assembly within the guide hole portion. The guide plate assembly according to any one of claims 1 to 3, characterized in that a spring member is disposed between the front or back surface of the guide plate and the back plate portion, for biasing the lining assembly in one direction along the rotor shaft direction relative to the guide plate. The guide plate assembly according to any one of claims 1 to 4, characterized in that the anti-fall-out mechanism comprises a fall-out prevention flange portion integrally molded on the front surface side of the back plate portion and having an outer diameter larger than that of the guide hole portion, and a lock plate having an outer shape larger than the opening shape of the guide hole portion and attached to the back surface of the back plate portion. The guide plate assembly according to claim 5, characterized in that the protrusion is made of a joint member that is press-fitted into the back plate portion to fix the lock plate to the back surface of the back plate portion. The guide plate assembly according to claim 5, characterized in that the lock plate is fixed to the back surface of the back plate portion by a rivet. The guide plate assembly according to claim 5, characterized in that the lock plate is fixed to the back surface of the back plate portion by a blind rivet. The guide plate assembly according to claim 5, characterized in that the protrusion is made of a joint member that fixes the lock plate to the back surface of the back plate by means of a grommet at the tip that penetrates the back plate. The guide plate assembly according to any one of claims 1 to 4, characterized in that the anti-fall-out mechanism comprises a fall-out prevention flange portion integrally molded on the back surface side of the back plate portion and having an outer diameter larger than that of the guide hole portion, and a snap ring attached to an annular groove formed on the outer peripheral surface of the plate fitting portion of the back plate portion. The guide plate assembly according to any one of claims 1 to 10 , characterized in that a damping layer is provided on a rear side of the guide plate. 12. A friction pad assembly for a disc brake comprising: a guide plate assembly according to claim 1; and a lining holder having a groove that fits into a peripheral portion of the guide plate to detachably hold the guide plate assembly, and supporting the protrusion on its surface so that the protrusion can swing. 12. A friction pad assembly for a disc brake comprising: a guide plate assembly as claimed in any one of claims 1 to 11 ; a torque receiving plate having a groove portion which fits into a peripheral portion of the guide plate to detachably hold the guide plate assembly and which supports the convex portion on its surface so as to be able to swing; and an anchor plate which is provided on the back surface of the torque receiving plate and which is inserted from the groove end into the lining holder having a dovetail-shaped fixing groove. 13. The friction pad assembly for a disc brake according to claim 12, wherein a plate fitting portion of the back plate portion is inserted and attached to the guide hole portion, and the braking torque acting when the disc rotor and the friction material contact each other is transmitted from the plate fitting portion to the guide plate, and further transmitted from the anchor pin engagement portion of the guide plate to the anchor pin fitting portion of the lining holder by an anchor pin. 14. The friction pad assembly for a disc brake according to claim 13, wherein the plate fitting portion of the back plate portion is inserted and attached to the guide hole portion, and the braking torque acting when the disc rotor and the friction material contact each other is transmitted from the plate fitting portion to the guide plate, and further transmitted from the anchor pin engagement portion of the guide plate by an anchor pin to the anchor pin fitting portion of the torque receiving plate, and further transmitted from the anchor plate of the torque receiving plate to the fixed portion of the lining holder by an anchor plate fixing member. 16. The friction pad assembly for a disc brake according to claim 14 , wherein the anchor pin engagement portion is formed in a semicircular shape to receive the braking torque. 16. A friction pad assembly for a disc brake as described in claim 14 or 15, characterized in that, among the plurality of anchor pin engagement portions, the anchor pin engagement portion that is located vertically lower when attached to a brake caliper is formed in a circular shape and receives the braking torque. 13. The friction pad assembly for a disc brake according to claim 12 , wherein a damping layer is provided on the front surface side of the lining holder so as to face the protrusion. A damping layer is provided on the front surface side of the torque receiving plate so as to face the protrusion.
14. A friction pad assembly for a disc brake according to claim 13 . The friction pad assembly for a disc brake as described in claim 14, characterized in that a damping layer facing the convex portion is provided on the surface side of the lining holder, and an anchor pin engagement hole is formed in the damping layer, through which the anchor pin penetrates the anchor pin fitting portion formed in a circular shape . 16. The friction pad assembly for a disc brake according to claim 15, characterized in that a damping layer facing the convex portion is provided on the surface side of the torque receiving plate, and an anchor pin engagement hole is formed in the damping layer, through which the anchor pin that penetrates the anchor pin fitting portion formed in a circular shape is inserted. 20. The friction pad assembly for a disc brake according to claim 18 , wherein the damping layer is fixed to the lining holder by a fastening member. 20. The friction pad assembly for a disc brake according to claim 19, wherein the damping layer is fixed to the torque receiving plate by a fastening member. 20. The friction pad assembly for a disc brake according to claim 18 , wherein the damping layer is fixed to the lining holder by an adhesive. 20. The friction pad assembly for a disc brake according to claim 19, wherein the damping layer is fixed to the torque receiving plate by an adhesive.

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