JP7075848B2 - Disc brake - Google Patents

Description

The present invention relates to a disc brake that applies a braking force to a vehicle such as an automobile.

Generally, disc brakes provided in vehicles such as automobiles are arranged so as to straddle the outer peripheral side of a disc that rotates with wheels, and have a cylinder on the inner side into which a piston is inserted and a caliper having a claw on the outer side. It is equipped with a support member (carrier) that is attached to the non-rotating part of the vehicle and supports the caliper so as to be movable in the axial direction of the disc. Patent Document 1 describes a disc brake with an improved appearance by covering the outer side of the claw portion of the caliper body (caliper) with a decorative plate (design plate) fixed to the caliper bracket (support member) with mounting bolts. The device is described.

Japanese Unexamined Patent Publication No. 2010-91022

According to the prior art, since the decorative plate is fixed to the caliper bracket with mounting bolts, there is a risk of adverse effects due to vibration of the decorative plate, for example, an increase in chattering noise and a decrease in durability. Further, since the decorative plate is fixed to the caliper bracket, the brake squeal performance and productivity may decrease due to the change in the natural frequency (natural value), and the desired performance may not be maintained.

An object of the present invention is to provide a disc brake capable of reducing vibration of a design plate.

The present invention comprises a caliper that is arranged straddling the outer peripheral side of a disc that rotates with the wheels, has a cylinder into which a piston is inserted on the inner side, and has a claw on the outer side, and the caliper is in the axial direction of the disc. A mounting member that can be freely moved, an inner side friction pad that is pressed against the disc by the piston from the inner side of the caliper, and an outer side friction that is pressed against the disc by the claw portion from the outer side of the caliper. In a disc brake comprising a pad and a design plate covering the outer side of the claw portion of the caliper, the claw portion of the caliper has a surface facing the mounting member in the circumferential direction of the disc. A circumferential engagement groove for supporting the design plate is formed to prevent the design plate from moving in the circumferential direction of the disc, and the caliper is prevented from moving the design plate in the axial direction of the disc. An axial engaging groove for supporting the design plate is formed, and the design plate has a circumferential engaging claw that elastically engages with the circumferential engaging groove for supporting the design plate and the design plate support . An axial engaging claw that elastically engages with the axial engaging groove is provided, and the design plate supports the circumferential engaging claw and the axial engaging claw with the design plate of the caliper. It is supported by the caliper by elastically engaging the peripheral engagement groove and the axial engagement groove for supporting the design plate .
Further, the present invention comprises a caliper which is arranged so as to straddle the outer peripheral side of a disc that rotates with a wheel, has a cylinder into which a piston is inserted on the inner side, and has a claw portion on the outer side, and the caliper is the shaft of the disc. A mounting member that can be mounted so that it can move in a direction, an inner side friction pad that is pressed against the disc by the piston from the inner side of the caliper, and an outer that is pressed against the disc by the claw portion from the outer side of the caliper. In a disc brake including a side friction pad and a design plate that covers the outer side of the claw portion of the caliper, the design plate is said to be on the back surface of the inner leg portion of the caliper on which the cylinder is provided. An axial engagement groove for supporting the design plate that suppresses the movement of the disc in the axial direction is formed, and the design plate is elastically engaged with the axial engagement groove for supporting the design plate of the caliper. A matching axial engaging claw and a circumferential holding portion that abuts on the side surface of the caliper facing the mounting member in the circumferential direction of the disc and extends inward in the radial direction of the disc are provided.
Further, the present invention comprises a caliper which is arranged so as to straddle the outer peripheral side of a disc that rotates with a wheel, has a cylinder into which a piston is inserted on the inner side, and has a claw portion on the outer side, and the caliper from the inner side of the caliper. An inner side friction pad pressed against the disc by a piston, an outer side friction pad pressed against the disc by the claw portion from the outer side of the caliper, and a design plate covering the outer side of the claw portion of the caliper. In the disc brake provided with, the caliper is formed with an engaging groove for supporting the design plate, and the design plate is provided with an engaging claw that engages with the engaging groove for supporting the design plate. The design plate is supported by the caliper by engaging the engaging claw with the design plate supporting engaging groove of the caliper, and the caliper is provided with the cylinder. It has a bridge portion that extends from the inner leg portion to the outer side in the axial direction of the disc and is provided with a through hole that penetrates in the radial direction of the disc, and has the penetration portion of the bridge portion of the caliper. A female screw hole is formed in a portion separated from the hole, and a fixing screw which is opened at a position corresponding to the female screw hole of the caliper and screwed into the female screw hole is inserted into the design plate. An insertion hole is provided.

The disc brake of the present invention can reduce the vibration of the design plate.

The perspective view which shows the disc brake by 1st Embodiment. A plan view of the disc brake in FIG. 1 as viewed from above. A cross-sectional view of the disc brake in FIG. 1 as viewed from the direction of arrow III-III. FIG. 2 is a cross-sectional view of the disc brake in FIG. 1 as viewed from the direction of arrow IV-IV in FIG. FIG. 2 is a cross-sectional view of the disc brake in FIG. 1 as viewed from the direction of arrow VV in FIG. The front view which shows the design board in FIG. 1 by itself. A plan view of the design plate in FIG. 6 as viewed from above. A side view of the design plate in FIG. 6 as viewed from the right side. The perspective view which shows the disc brake by the 2nd Embodiment. FIG. 9 is a cross-sectional view of the disc brake in FIG. 9 as viewed from the direction of arrow XX. FIG. 9 is a cross-sectional view of the disc brake in FIG. 9 as viewed from the direction of arrow XI-XI. The front view which shows the design board in FIG. 9 alone. A plan view of the design plate in FIG. 12 as viewed from above. A side view of the design plate in FIG. 12 as viewed from the right side. The perspective view which shows the disc brake by the 3rd Embodiment. FIG. 15 is a cross-sectional view of the disc brake in FIG. 15 as viewed from the direction of arrow XVI-XVI. The plan view which shows the design board in FIG. 15 alone. The perspective view which shows the disc brake according to 4th Embodiment. FIG. 18 is a cross-sectional view of the disc brake in FIG. 18 as viewed from the direction of arrow XIX-XIX. FIG. 18 is a cross-sectional view of the disc brake in FIG. 18 as viewed from the direction of arrow XX-XX. The front view which shows the design board in FIG. 18 alone. A plan view of the design plate in FIG. 21 as viewed from above. A side view of the design plate in FIG. 21 as viewed from the right side. The perspective view which shows the disc brake by the 5th Embodiment. FIG. 24 is a cross-sectional view of the disc brake in FIG. 24 as viewed from the direction of arrow XXV-XXV.

Hereinafter, a case where the disc brake according to the embodiment is mounted on a four-wheeled vehicle will be described as an example, and the description will be given according to the attached drawings.

1 to 8 show a first embodiment. In FIGS. 1 and 2, the disc brake 1 applies a braking force to a vehicle (not shown) via a disc D (FIG. 2) as a braked member. The disc D, also called a disc rotor, rotates with wheels (not shown). As shown in FIGS. 1 to 8, the disc brake 1 includes a mounting member 2, a caliper 5, a piston 13, an inner pad 14, an outer pad 15, and a design plate 18.

The mounting member 2 called a carrier is located in the vicinity of the disc D and is mounted on a non-rotating portion (not shown) of the vehicle. The mounting member 2 is arranged so as to straddle the outer peripheral side of the disc D in the axial direction of the disc D. The axial direction of the disk D corresponds to, for example, the X direction shown as a reference in each figure, and is also referred to as “disk axial direction” in the present specification.

The mounting member 2 includes a pair of arm portions 2A and 2A, a support portion 2B, and a reinforcing beam 2C. The arms 2A and 2A extend in the axial direction of the disc D so as to be separated from each other in the rotation direction of the disc D and straddle the outer circumference of the disc D. The rotation direction of the disk D corresponds to, for example, the Y direction shown as a reference in each figure, and is also referred to as a “disk rotation direction”, a “disk tangential direction”, or a “disk circumferential direction” in the present specification.

The arm portions 2A and 2A slidably support the caliper 5 in the disk axial direction via the sliding pins 3 and 3. The support portion 2B is provided so as to be connected so as to integrate the base end side (upper end side in FIG. 2) of each arm portion 2A, 2A, and becomes the inner side (upper side in the vertical direction of FIG. 2) of the disk D. It is fixed to the non-rotating part of the vehicle at the position. The reinforcing beam 2C connects the tip sides (lower end side of FIG. 2) of the arm portions 2A and 2A to each other at a position on the outer side (lower side in the vertical direction of FIG. 2) of the disc D. As a result, the arm portions 2A and 2A of the mounting member 2 are integrally connected by the support portion 2B on the inner side of the disk D, and are integrally connected by the reinforcing beam 2C on the outer side.

On the inner side of the mounting member 2, a pair of pad guides (not shown) for guiding the inner pad 14, which is an inner side friction pad, in the disk axial direction is provided. Each pad guide is formed, for example, as a concave groove having a U-shaped cross section (substantially U-shaped cross section) extending in the direction of the disc axis, and is separated from one side and the other side in the disc rotation direction with the inner pad 14 interposed therebetween. There is. Then, each ear portion (not shown) of the inner pad 14 is fitted (inserted) into each pad guide via the pad springs 4 and 4, respectively.

On the other hand, on the outer side of the mounting member 2, a pair of pad guides 2D and 2D (see FIG. 3) for guiding the outer pad 15 which is an outer side friction pad in the disk axial direction are provided. Like the pad guides on the inner side, each of these pad guides 2D and 2D is also formed as, for example, a concave groove having a U-shaped cross section (substantially U-shaped cross section) extending in the disc axial direction, and the disc rotates with the outer pad 15 interposed therebetween. It is separated from one side and the other side in the direction. Then, the ear portions 15B1 and 15B1 of the outer pad 15 are fitted (inserted) into the pad guides 2D and 2D via the pad springs 4 and 4, respectively.

The caliper 5 is attached to the attachment member 2 so as to be movable (sliding displacement) in the disk axial direction (via the sliding pins 3 and 3). The caliper 5 is arranged so as to straddle the outer peripheral side of the disc D in the disc axial direction. The caliper 5 includes an inner leg portion 6, a bridge portion 9, and an outer leg portion 11.

The inner leg 6 is provided on the inner side, which is one side in the disk axial direction. The inner leg 6 of the caliper 5 is provided with, for example, two cylinders 7 having twin bores (only one is shown in FIG. 4). A piston 13 is slidably fitted in the cylinder 7. Brake fluid pressure is supplied to the inside of the cylinder 7 from the outside when the brake is operated. Further, the inner leg portion 6 is integrally provided with a pair of pin mounting portions 8 and 8 projecting in the disk rotation direction. Each of these pin mounting portions 8 and 8 slidably supports the entire caliper 5 to the arm portions 2A and 2A of the mounting member 2 via the sliding pins 3 and 3.

The bridge portion 9 extends from the inner leg portion 6 to the outer side, which is the other side in the disc axial direction, so as to straddle the outer peripheral side of the disc D between the arm portions 2A and 2A of the mounting member 2. The bridge portion 9 is provided with a pair of through holes 10 and 10 penetrating in the radial direction of the disk D so as to be separated from each other in the disk rotation direction. The radial direction of the disk D corresponds to, for example, the Z direction shown as a reference in each figure, and is also referred to as “disk radial direction” in the present specification.

The outer leg portion 11 extends inward in the disc radial direction from the outer side, which is the tip end side of the bridge portion 9, and the tip end side is a claw portion 12 having a three-pronged shape. That is, as shown in FIG. 3, the claw portion 12 is composed of three claw pieces 12A, 12B, 12C whose tip side is divided into three forks. The claw portion 12 (claw pieces 12A, 12B, 12C) abuts on the back plate 15B of the outer pad 15. The claw portion 12 presses the outer pad 15 toward the outer side surface (lower side surface of FIG. 2) of the disc D during the braking operation (during braking). As described above, the caliper 5 has a cylinder 7 (cylinder hole) into which the piston 13 is inserted on the inner side and a claw portion 12 on the outer side.

As will be described later, the claw portion 12 of the caliper 5 is formed with engaging grooves 16 and 16 (FIG. 3) for supporting the design plate, which are located on the outer side surface (turning side) in the circumferential direction of the disc. Further, in the through hole 10 of the bridge portion 9 of the caliper 5, a design plate support engaging groove 17 (only one is shown in FIG. 4) is formed on the inner surface on the outer side in the disk axial direction. The engaging claws 22 and 23 of the design plate 18 are engaged with the engaging grooves 16 and 17 for supporting the design plate. As a result, the outer side of the claw portion 12 of the caliper 5 is covered with the design plate 18.

The piston 13 is formed as a bottomed cylindrical body and is slidably fitted in the cylinder 7 of the inner leg portion 6. The open end surface of the piston 13 on the tip end side abuts on the back plate 14B of the inner pad 14. The piston 13 presses the inner pad 14 toward the inner side surface (upper side surface in FIG. 2) of the disc D during the braking operation.

That is, when the brake fluid pressure is supplied from the outside into the cylinder 7, the piston 13 slides and displaces in the disc axial direction toward the disc D side due to the hydraulic pressure at this time, and the inner pad 14 is moved to the disc D. Press on one side (inner side) side. At this time, the caliper 5 receives the pressing reaction force from the disc D, so that the entire caliper 5 is slidably displaced toward the inner side with respect to the arm portions 2A and 2A of the mounting member 2, and the claw portion 12 discs the outer pad 15. Press on the other side surface (side surface on the outer side) side of D. As a result, braking force can be applied to the disc D and, by extension, the wheels.

The inner pad 14 and the outer pad 15 are arranged so as to face each other on both sides in the axial direction of the disc D. The inner pad 14 and the outer pad 15 are attached to the attachment member 2 so as to be movable in the disk axial direction. The inner pad 14 is pressed against the disc D by the piston 13 from the inner side of the caliper 5, and the outer pad 15 is pressed against the disc D by the claw portion 12 from the outer side of the caliper 5. That is, the inner pad 14 presses the disc D from the inside (one side in the disc axial direction) on the inner side of the caliper 5, and the outer pad 15 presses the disc D on the outer side (in the disc axial direction) on the outer side of the caliper 5. Press from the other side).

The inner pad 14 includes a lining 14A as a friction material that frictionally contacts the surface (one side surface in the axial direction) of the disc D, and a back plate 14B provided on a surface opposite to the lining 14A in the axial direction of the disc. ing. In this case, the lining 14A is fixed (bonded) to the flat plate-shaped back plate 14B extending in the disk rotation direction. The back plate 14B is provided with an ear portion (not shown) as a protruding portion having a convex shape located at the side edge portions on both sides in the disk rotation direction. Each selvage is slidably inserted (inserted) into the pad guide of the mounting member 2 via the pad springs 4 and 4.

Like the inner pad 14, the outer pad 15 also has a lining 15A as a friction material that frictionally contacts the surface (another side surface in the axial direction) of the disc D, and a back plate 15B provided on a surface opposite to the lining 15A in the axial direction of the disc. It is composed including and. In this case, the lining 15A is fixed (bonded) to the flat plate-shaped back plate 15B extending in the disk rotation direction. The back plate 15B is provided with ear portions 15B1 and 15B1 (FIG. 3) as protrusions having a convex shape located on both side edge portions in the disk rotation direction. The selvages 15B1 and 15B1 are slidably inserted (inserted) into the pad guides 2D and 2D of the mounting member 2 via the pad springs 4 and 4, respectively.

By the way, according to the above-mentioned conventional technique, the decorative plate (design plate) covering the claw portion of the caliper is fixed to the caliper bracket (support member) with a mounting bolt. Therefore, there is a possibility that the vibration of the decorative plate may cause an adverse effect, for example, an increase in chattering noise or a decrease in durability. Further, since the decorative plate is fixed to the caliper bracket, the brake squeal performance and productivity may decrease due to the change in the natural frequency (natural value), and the desired performance may not be maintained. Therefore, in the embodiment, in order to reduce the chattering noise due to the vibration of the design plate 18 and improve the durability, the caliper 5 is provided with the engaging grooves 16 and 17, and the design plate 18 is provided with the engaging claws 22 and 23. The design plate 18 is elastically supported (fixed) to the caliper 5 by engaging (hooking) the engaging claws 22 and 23 of the design plate 18 with the engaging grooves 16 and 17 of the caliper 5. Thereby, the vibration absorption effect (damping effect) can be obtained.

That is, the design plate 18 covers the outer side of the claw portion 12 of the caliper 5. In this case, the design plate 18 is supported by the caliper 5 so as to cover the claw portion 12 of the caliper 5 so that the claw portion 12 of the caliper 5 cannot be directly seen from the gap of the road wheel. In the embodiment, the caliper 5 is formed with a total of four design plate support engaging grooves 16 and 17. That is, a pair of design plate supporting engaging grooves 16 and 16 are formed in the claw portion 12 of the caliper 5, and a pair of design plate supporting engaging grooves 17 are formed in the bridge portion 9 of the caliper 5. Has been done. More specifically, as shown in FIGS. 16 is formed. Further, as shown in FIGS. 1, 2 and 4, each of the through holes 10 and 10 of the bridge portion 9 of the caliper 5 has an engaging groove 17 for supporting the design plate located on the inner surface on the outer side in the disk axial direction. It is formed.

On the other hand, the design plate 18 is provided with engaging claws 22 and 23 that engage with the design plate supporting engaging grooves 16 and 17 of the caliper 5, respectively. The design plate 18 is supported by the caliper 5 by engaging the engaging claws 22 and 23 with the design plate supporting engaging grooves 16 and 17 of the caliper 5. That is, the engaging claws 22 and 23 of the design plate 18 and the design plate supporting engaging grooves 16 and 17 of the caliper 5 are elastically engaged.

Here, the design plate 18 has a front surface portion 19 that covers the claw portion 12 of the caliper 5 from the outer side in the disc axial direction, and a flat surface portion 20 that covers the bridge portion 9 of the caliper 5 from the outside (outer diameter side) in the disc radial direction. And a curved portion 21 connecting the front surface portion 19 and the flat surface portion 20. The front surface portion 19 is formed in a plate shape extending in the disc radial direction and the disc circumferential direction on the outer side of the claw portion 12. The flat surface portion 20 extends from the outside of the front surface portion 19 in the disc radial direction toward the inner side in the disc axial direction via the curved portion 21. The flat surface portion 20 is formed in a plate shape extending in the disc axial direction and the disc circumferential direction outside the disc radial direction of the bridge portion 9. In this case, the flat surface portion 20 extends in the disc axial direction from the claw portion 12 side of the caliper 5 to the front of the through holes 10 and 10 of the bridge portion 9.

The front portion 19 is provided with a pair of engaging claws 22 and 22 located outside in the circumferential direction of the disc. The engaging claws 22 and 22 extend from the outer edge of the front portion 19 in the circumferential direction of the disc toward the inner side in the disc axial direction, and the tip end side thereof is inside (entry side) in the circumferential direction of the disc and the disc shaft. It is folded back in a U shape toward the outer side in the direction. Then, the tip side of the folded portion is engaged with the design plate support engaging grooves 16 and 16 provided on the outer side (turning side) of the claw portion 12 of the caliper 5 in the disk circumferential direction. There is.

Further, the flat surface portion 20 is provided with a pair of engaging claws 23, 23 located on the inner side in the disk axial direction. The engaging claws 23, 23 extend further toward the inner side from the edge of the flat surface portion 20 on the inner side in the disc axial direction, and the tip end side thereof is toward the outer side in the disc axial direction and inward in the disc radial direction. It is folded back in a U shape. Further, the tip side of the folded portion is further bent outward in the radial direction of the disk at a substantially right angle. The tip side of the bent portion is engaged with the design plate support engaging groove 17 provided on the inner surface of the through hole 10 of the bridge portion 9 of the caliper 5 on the outer side in the disk axial direction.

In the embodiment, the engaging claws 22 and 22 provided on the front surface portion 19 of the design plate 18 are engaged with the design plate supporting engaging grooves 16 and 16 of the caliper 5. The engaging portion between the engaging claws 22 and 22 and the design plate supporting engaging grooves 16 and 16 is a circumferential engaging portion that prevents the design plate 18 from being displaced in the circumferential direction of the disk. Further, the engaging claws 23, 23 provided on the flat surface portion 20 of the design plate 18 are engaged with the engaging groove 17 for supporting the design plate of the caliper 5. The engaging portion between the engaging claws 23, 23 and the design plate supporting engaging groove 17 is an axial engaging portion that prevents the design plate 18 from being displaced in the disk axial direction. As described above, in the embodiment, the design plate 18 is displaced in the circumferential direction of the disk D in the engaging portion between the engaging claws 22 and 23 of the design plate 18 and the engaging grooves 16 and 17 for supporting the design plate of the caliper 5. It is provided with a circumferential engaging portion that prevents the design plate 18 from being displaced, and an axial engaging portion that prevents the design plate 18 from being displaced in the axial direction of the disk D. Of the engaging grooves 16 and 17 for supporting the design plate, the engaging grooves 16 and 16 for supporting the design plate correspond to the "circumferential engaging groove for supporting the design plate", and among the engaging claws 22 and 23, the engaging claws. 22 and 22 correspond to "circumferential engaging claws". Further, the engagement groove 17 for supporting the design plate among the engagement grooves 16 and 17 for supporting the design plate corresponds to the "axially oriented engaging groove for supporting the design plate", and the engaging claws among the engaging claws 22 and 23. 23 and 23 correspond to "axially engaging claws".

The disc brake 1 according to the first embodiment has the above-described configuration, and its operation will be described next.

First, when the vehicle is braked, the piston 13 is slidably displaced toward the disc D by supplying the brake fluid pressure to the cylinder 7 of the caliper 5, thereby pressing the inner pad 14 against one side surface of the disc D. At this time, the caliper 5 receives the pressing reaction force from the disc D, so that the entire caliper 5 is slidably displaced toward the inner side with respect to the arm portions 2A and 2A of the mounting member 2, and the claw portion 12 of the caliper 5 is the outer pad. 15 is pressed against the other side surface of the disc D.

As a result, the inner pad 14 and the outer pad 15 can strongly sandwich the disc D rotating together with the wheels from both sides in the axial direction, and can apply braking force to the disc D. When the brake operation is released, the hydraulic pressure supply to the cylinder 7 is stopped, so that the inner pad 14 and the outer pad 15 are separated from the disc D, and the non-braking state is restored again.

Here, according to the first embodiment, the outer side of the claw portion 12 of the caliper 5 is covered with the design plate 18. In this case, the design plate 18 is elastically supported (elastically) with respect to the caliper 5 by engaging the engaging claws 22 and 23 of the design plate 18 with the engaging grooves 16 and 17 for supporting the design plate of the caliper 5. It is fixed by force). That is, the engaging claws 22 and 23 and the design plate supporting engaging grooves 16 and 17 are elastically engaged. As a result, the vibration of the design plate 18 can be reduced (absorbed and attenuated). More specifically, the chattering noise of the design plate 18 can be reduced, and the decrease in durability due to vibration can be suppressed. Moreover, since it is not necessary to change the basic shape of the caliper 5, it is possible to suppress the influence of the design plate 18 on the caliper performance. Moreover, since the influence on the layout can be suppressed, it is not necessary to make a large change in the vehicle layout.

It is also possible to remove the design plate 18 when maintaining the disc brake 1 attached to the vehicle (for example, when replacing the inner pad 14 and the outer pad 15 which are friction pads). Therefore, after removing the design plate 18, it is possible to perform the same work as a normal caliper (caliper without a design plate).

Further, the design plate 18 is supported by the caliper 5 only by engaging the engaging claws 22 and 23 with the design plate supporting engaging grooves 16 and 17. Therefore, for example, as compared with a configuration in which a part is screwed and fixed, it is possible to further reduce the vibration of the design plate 18 and further improve the appearance. In any case, the scale of the shape change from the base product (conventional product) can be reduced, the productivity can be not impaired, and the appearance can be improved.

According to the first embodiment, the design plate 18 is an engaging portion (circumferential engaging portion) between the engaging claws 22 and 22 of the front portion 19 of the design plate 18 and the engaging grooves 16 and 16 for supporting the design plate. ), And the engaging portions (axially engaging portions) between the engaging claws 23 and 23 of the flat surface portion 20 of the design plate 18 and the engaging groove 17 for supporting the design plate are supported by the caliper 5. Therefore, even if the design plate 18 is supported on the caliper 5 only by the engaging claws 22 and 23 (that is, the design plate is not screwed and fixed), the design plate 18 is attached to the caliper 5. On the other hand, it can be stably supported. As a result, stable support of the design plate 18 and reduction of vibration of the design plate 18 can be achieved at a high level.

Next, FIGS. 9 to 14 show a second embodiment. The feature of the second embodiment is that the design plate is supported by the caliper by "engagement between the engagement claw and the engagement groove" and "screw fastening using a screw". In the second embodiment, the same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The caliper 31 is formed with a pair of design plate supporting engaging grooves 32 and a pair of female screw holes 33. That is, in the above-mentioned first embodiment, a total of four design plate support engaging grooves 16 and 17 are formed in the caliper 5. On the other hand, in the caliper 31 of the second embodiment, instead of the four design plate support engagement grooves 16 and 17, a pair of design plate support engagement grooves 32 and a pair of female screw holes 33 are provided. Is formed.

More specifically, the claw portion 12 of the caliper 31 is composed of three claw pieces 12A, 12B, 12C whose tip side is divided into three forks. Then, as shown in FIG. 10, the caliper 31 is opened on the inner side surface in the radial direction of the disc between the base end side of the claw portion 12, in other words, between the adjacent claw pieces 12A, 12B, and 12C. An engaging groove 32 for supporting the design plate is formed. Further, as shown in FIGS. 9 and 11, the portions of the bridge portion 9 of the caliper 31 that are separated from the through holes 10, that is, both ends of the bridge portion 9 in the disk circumferential direction, are inside in the disk radial direction, respectively. A female screw hole 33 extending toward the surface is formed. Fixing screws 34, 34 are screwed into the female screw holes 33.

On the other hand, the design plate 35 is provided with engaging claws 39 that engage with the engaging grooves 32 for supporting the design plate of the caliper 31. Further, the design plate 35 is provided with screwed pieces 40, 40 at positions corresponding to the female screw holes 33 of the caliper 31. Insertion holes 40A and 40A (FIGS. 11 and 13) through which fixing screws 34 and 34 for pressing the screwing pieces 40 and 40 to the bridge portion 9 are inserted are formed in the screwing pieces 40 and 40. There is. The design plate 35 is supported by the caliper 31 by engaging the engaging claw 39 with the design plate supporting engaging groove 32 of the caliper 31. At the same time, the design plate 35 is inserted into the insertion holes 40A and 40A of the screwed pieces 40 and 40, and the screwed pieces 40 and 40 are bridged by the fixing screws 34 and 34 screwed into the female screw holes 33 of the caliper 31. By being fixed to the portion 9, it is supported by the caliper 31.

Here, the design plate 35 has a front surface portion 36 that covers the claw portion 12 of the caliper 31 from the outer side in the disk axial direction, and a flat surface portion 37 that covers the bridge portion 9 of the caliper 31 from the outside (outer diameter side) in the disk radial direction. And a curved portion 38 connecting the front surface portion 36 and the flat surface portion 37. The front surface portion 36 is formed in a plate shape extending in the disc radial direction and the disc circumferential direction on the outer side of the claw portion 12. The flat surface portion 37 extends from the outside of the front surface portion 36 in the disc radial direction toward the inner side in the disc axial direction via the curved portion 38. The flat surface portion 37 is formed in a plate shape extending in the disc axial direction and the disc circumferential direction outside the disc radial direction of the bridge portion 9. In this case, the flat surface portion 37 extends in the disc axial direction from the claw portion 12 side of the caliper 31 to the front of the through holes 10 and 10 of the bridge portion 9.

The front portion 36 is provided with a pair of engaging claws 39 located inside in the radial direction of the disc. The engaging claw 39 extends from the inner edge of the front portion 36 in the disc radial direction toward the inner side in the disc axial direction, and the tip end side thereof is directed toward the outer side in the disc radial direction and the outer side in the disc axial direction. It is folded. Then, the tip end side of the bent portion is engaged with the design plate support engaging groove 32 provided on the base end side (between the adjacent claw pieces 12A, 12B, 12C) of the claw portion 12 of the caliper 31. ing.

Further, the flat surface portion 37 is provided with a pair of screwed pieces 40, 40 located on the inner side in the disk axial direction. The screwing pieces 40, 40 extend further toward the inner side from the end edges on the inner side in the disc axial direction on both ends of the flat surface portion 37 in the circumferential direction of the disc, and the fixing screws 34, 34 are inserted in the central portion thereof. The insertion holes 40A and 40A are formed. The screwing pieces 40, 40 are fixed to the bridge portion 9 by the fixing screws 34, 34 screwed into the female screw holes 33 of the caliper 31.

The second embodiment covers the claw portion 12 of the caliper 31 with the design plate 35 as described above, and the basic operation thereof is not particularly different from that according to the first embodiment. That is, in the second embodiment as in the first embodiment, the vibration of the design plate 35 is reduced by elastically engaging the engaging claw 39 and the design plate supporting engaging groove 32. be able to. The design plate supporting engaging groove 32 corresponds to the "design plate supporting axial engaging groove", and the engaging claw 39 corresponds to the "axially oriented engaging claw". Further, according to the second embodiment, the support strength of the design plate 35 can be improved by using the fixing screws 34 and 34. Moreover, since the female screw hole 33 for screwing the fixing screws 34 and 34 is provided at a flat position on the upper portion (outside in the disc radial direction) of the bridge portion 9, for example, the female screw hole 33 can be easily machined. Can be done. Further, the fixing screws 34 and 34 can be easily removed, and the design plate 35 can be easily removed. As a result, productivity (workability, assemblability) can be improved as compared with the conventional technique.

Next, FIGS. 15 to 17 show a third embodiment. The feature of the third embodiment is that the support structure of the design plate of the first embodiment (that is, "engagement between the engaging claw and the engaging groove") is added with "screw fastening using screws". I have done it. In the third embodiment, the same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

Similar to the caliper 5 of the first embodiment, the caliper 41 is formed with engaging grooves 16 and 17 (see FIGS. 3 and 4) for supporting the design plate, and a pair of female screw holes 42 (FIG. 3 and 4). 16) is also formed. That is, in the above-mentioned first embodiment, a total of four design plate support engaging grooves 16 and 17 are formed in the caliper 5. On the other hand, in the caliper 41 of the third embodiment, in addition to the four design plate support engaging grooves 16 and 17, a pair of female screw holes 42 are also formed. Here, the female screw hole 42 is formed in the bridge portion 9 of the caliper 41. More specifically, as shown in FIGS. 15 and 16, discs are placed on both ends of the bridge portion 9 of the caliper 41, which are separated from the through holes 10, that is, on both ends of the bridge portion 9 in the circumferential direction of the disc. A female screw hole 42 extending inward in the radial direction is formed. Fixing screws 43, 43 are screwed into the female screw holes 42.

On the other hand, the design plate 18 is provided with engaging claws 22 and 23 that engage with the design plate supporting engaging grooves 16 and 17 of the caliper 41, respectively. In addition to this, the flat surface portion 20 of the design plate 18 is formed with insertion holes 20A and 20A (FIGS. 16 and 17) through which the fixing screws 43 and 43 are inserted at positions corresponding to the female screw holes 42 of the caliper 41. Has been done. The design plate 18 is supported by the caliper 41 by engaging the engaging claws 22 and 23 with the design plate supporting engaging grooves 16 and 17 of the caliper 41. At the same time, the design plate 18 is inserted into the insertion holes 20A and 20A of the flat surface portion 20 and the flat surface portion 20 is fixed to the bridge portion 9 by the fixing screws 43 and 43 screwed into the female screw holes 42 of the caliper 41. Therefore, it is supported by the caliper 41.

The third embodiment covers the claw portion 12 of the caliper 41 with the design plate 18 as described above, and the basic operation thereof is not particularly different from that according to the first embodiment. That is, in the third embodiment as in the first embodiment, the design plate is formed by (elastically) engaging the engaging claws 22 and 23 with the design plate supporting engaging grooves 16 and 17. Vibration can be reduced. Moreover, as in the second embodiment, the support strength of the design plate 18 can be improved by using the fixing screws 43 and 43. Moreover, since the female screw hole 42 for screwing the fixing screws 43 and 43 is provided at a flat position on the upper portion of the bridge portion 9 (outside in the disc radial direction), productivity (workability, assemblability) is also ensured. be able to.

Next, FIGS. 18 to 23 show a fourth embodiment. The feature of the fourth embodiment is that the design plate is provided with an engaging claw and a circumferential holding portion, and the flat surface portion of the design plate is screwed and fixed by using a screw. In the fourth embodiment, the same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The caliper 51 is formed with a pair of engagement grooves 52 for supporting a design plate and a pair of female screw holes 53. That is, as shown in FIG. 19, a pair of design plate support engaging grooves 52 are provided on the back surface of the inner leg 6 of the caliper 51, in other words, on the inner side surface in the disk axial direction, separated in the disk circumferential direction. It is formed. Further, as shown in FIGS. 18 and 20, female screw holes extending inward in the disc radial direction are located at positions on the inner side of the through holes 10 of the caliper 51 on the inner side in the disc axial direction. 53 are formed so as to be separated from each other in the circumferential direction of the disk. Fixing screws 54 and 54 are screwed into the female screw holes 53.

On the other hand, the design plate 55 is provided with engaging claws 59 that engage with the engaging grooves 52 for supporting the design plate of the caliper 51. Further, the design plate 55 is provided with a circumferential holding portion 60 that abuts on the side surface of the caliper 51 extending in the disk axial direction. Further, the flat surface portion 57 of the design plate 55 is formed with insertion holes 57A and 57A (FIGS. 20 and 22) through which the fixing screws 54 and 54 are inserted at positions corresponding to the female screw holes 53 of the caliper 51. .. The design plate 55 is supported by the caliper 51 by engaging the engaging claw 59 with the design plate supporting engaging groove 52 of the caliper 51. At the same time, the design plate 55 is positioned in the circumferential direction by the circumferential holding portion 60 coming into contact with the side surface of the caliper 51. Further, the design plate 55 is inserted into the insertion holes 57A and 57A of the flat surface portion 57, and the flat surface portion 57 is fixed to the bridge portion 9 by the fixing screws 54 and 54 screwed into the female screw holes 53 of the caliper 51. Is supported by the caliper 51.

Here, the design plate 55 has a front surface portion 56 that covers the claw portion 12 of the caliper 51 from the outer side in the disk axial direction, and a flat surface portion 57 that covers the bridge portion 9 of the caliper 51 from the outside (outer diameter side) in the disk radial direction. And a curved portion 58 connecting the front surface portion 56 and the flat surface portion 57. The front surface portion 56 is formed in a plate shape extending in the disc radial direction and the disc circumferential direction on the outer side of the claw portion 12. The flat surface portion 57 extends from the outside of the front surface portion 56 in the disc radial direction toward the inner side in the disc axial direction via the curved portion 58. The flat surface portion 57 is formed in a plate shape extending in the disc axial direction and the disc circumferential direction outside the disc radial direction of the bridge portion 9. In this case, the flat surface portion 57 extends from the claw portion 12 side of the caliper 51 beyond the bridge portion 9 to the intermediate position of the inner leg portion 6 in the disc axial direction so as to cover the through holes 10 and 10.

The inner edge of the front portion 56 in the disc radial direction is a protruding portion 56A that protrudes toward the inner side in the disc axial direction. On the other hand, the flat surface portion 57 is provided with a pair of engaging claws 59 located on the inner side in the disk axial direction. The engaging claw 59 extends further toward the inner side from the edge of the flat surface portion 57 on the inner side in the disc axial direction, and the tip end side thereof is V-shaped toward the outer side in the disc axial direction and the inner side in the disc radial direction. It is folded back into a shape. Further, the tip side of the folded portion is further bent outward in the radial direction of the disk at a substantially right angle. The tip end side of the bent portion is engaged with the design plate support engaging groove 52 provided on the side surface of the inner leg portion 6 of the caliper 51.

Further, on both ends of the flat surface portion 57 in the circumferential direction of the disk, circumferential holding portions 60 extending inward in the radial direction of the disk are provided. The circumferential holding portion 60 abuts on the side surface of the caliper 51 extending in the disk axial direction to prevent (position) the design plate 55 from being displaced in the disk circumferential direction. As a result, in the design plate 55, the design plate 55 is displaced in the circumferential direction (rotational direction) of the disc D, separately from the engagement claw 59 that engages with the design plate support engagement groove 52 of the caliper 51. A circumferential holding portion 60 for blocking is provided.

Further, the flat surface portion 57 is formed with insertion holes 57A and 57A (FIGS. 20 and 22) through which the fixing screws 54 and 54 are inserted at positions corresponding to the female screw holes 53 of the caliper 51. The design plate 55 is inserted into the insertion holes 57A and 57A of the flat surface portion 57, and the flat surface portion 57 is fixed to the bridge portion 9 by the fixing screws 54 and 54 screwed into the female screw holes 53 of the caliper 51. It is supported against the caliper 51.

The fourth embodiment covers the claw portion 12 of the caliper 51 with the design plate 55 as described above, and the basic operation thereof is not particularly different from that according to the first embodiment. That is, in the fourth embodiment as in the first embodiment, the vibration of the design plate 55 is generated by (elastically) engaging the engaging claw 59 and the design plate supporting engaging groove 52. Can be reduced. The design plate supporting engaging groove 52 corresponds to the "design plate supporting axial engaging groove", and the engaging claw 59 corresponds to the "axially oriented engaging claw". Further, as in the second embodiment, by using the fixing screws 54 and 54, the supporting strength of the design plate 55 can be improved and the productivity (workability, assembling property) can be ensured. Further, the circumferential holding portion 60 of the design plate 55 can prevent the design plate 55 from being displaced in the circumferential direction of the disk. As a result, the design plate 55 can be stably supported with respect to the caliper 51 from this aspect as well.

Next, FIGS. 24 and 25 show a fifth embodiment. The feature of the fifth embodiment is that the design plate is supported by the caliper by the engaging claw and the circumferential holding portion. In the fifth embodiment, the same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The caliper 61 is formed with a total of four engaging grooves 62, 63 for supporting the design plate. That is, a pair of design plate supporting engaging grooves 62 is formed in the claw portion 12 of the caliper 61, and a pair of design plate supporting engaging grooves 63 are formed in the inner leg portion 6 of the caliper 61. ing. More specifically, as shown in FIG. 25, on the base end side of the claw portion 12 of the caliper 61, in other words, between the adjacent claw pieces 12A, 12B, 12C, on the inner surface in the disc radial direction, respectively. An engaging groove 62 for supporting the design plate is formed so as to open. Further, as shown in FIG. 25, on the back surface of the inner leg 6 of the caliper 61, in other words, on the inner side surface in the disk axial direction, a pair of design plate support engaging grooves 63 separated in the disk circumferential direction are provided. It is formed.

On the other hand, the design plate 64 is provided with engaging claws 68 and 69 that engage with the design plate supporting engaging grooves 62 and 63 of the caliper 61, respectively. Further, the design plate 64 is provided with a circumferential holding portion 70 that abuts on the side surface of the caliper 61 extending in the disk axial direction. The design plate 64 is supported by the caliper 61 by engaging the engaging claws 68 and 69 with the design plate supporting engaging grooves 62 and 63 of the caliper 61. At the same time, the design plate 64 is positioned in the circumferential direction by the circumferential holding portion 70 coming into contact with the side surface of the caliper 61.

Here, the design plate 64 has a front surface portion 65 that covers the claw portion 12 of the caliper 61 from the outer side in the disc axial direction, and a flat surface portion 66 that covers the bridge portion 9 of the caliper 61 from the outside (outer diameter side) in the disc radial direction. And a curved portion 67 connecting the front surface portion 65 and the flat surface portion 66. The front surface portion 65 is formed in a plate shape extending in the disc radial direction and the disc circumferential direction on the outer side of the claw portion 12. The flat surface portion 66 extends from the outside of the front surface portion 65 in the disc radial direction toward the inner side in the disc axial direction via the curved portion 67. The flat surface portion 66 is formed in a plate shape extending in the disc axial direction and the disc circumferential direction outside the disc radial direction of the bridge portion 9. In this case, the flat surface portion 66 extends from the claw portion 12 side of the caliper 61 beyond the bridge portion 9 to the intermediate position of the inner leg portion 6 in the disc axial direction so as to cover the through holes 10 and 10.

The front portion 65 is provided with a pair of engaging claws 68 located inside in the radial direction of the disc. The engaging claw 68 extends from the inner edge of the front portion 65 in the disc radial direction toward the inner side in the disc axial direction, and the tip end side thereof is toward the outer side in the disc radial direction and the outer side in the disc axial direction. It is folded. Then, the tip end side of the bent portion is engaged with the design plate support engaging groove 62 provided on the base end side (between the adjacent claw pieces 12A, 12B, 12C) of the claw portion 12 of the caliper 61. ing.

The flat surface portion 66 is provided with a pair of engaging claws 69 located on the inner side in the disk axial direction. The engaging claw 69 extends further toward the inner side from the edge of the flat surface portion 66 on the inner side in the disc axial direction, and the tip end side thereof is V-shaped toward the outer side in the disc axial direction and the inner side in the disc radial direction. It is folded back into a shape. Further, the tip side of the folded portion is further bent outward in the radial direction of the disk at a substantially right angle. The tip end side of the bent portion is engaged with the design plate support engaging groove 63 provided on the side surface of the inner leg portion 6 of the caliper 61.

Further, on both ends of the flat surface portion 66 in the circumferential direction of the disk, circumferential holding portions 70 extending inward in the radial direction of the disk are provided. The circumferential holding portion 70 abuts on the side surface of the caliper 61 extending in the disk axial direction to prevent (position) the design plate 64 from being displaced in the disk circumferential direction. As a result, the design plate 64 is prevented from being displaced in the disk circumferential direction, apart from the engagement claws 68 and 69 that engage with the design plate support engagement grooves 62 and 63 of the caliper 61. A circumferential holding portion 70 is provided.

The fifth embodiment covers the claw portion 12 of the caliper 61 with the design plate 64 as described above, and the basic operation thereof is not particularly different from that according to the first embodiment. That is, in the fifth embodiment as in the first embodiment, the design plate is formed by (elastically) engaging the engaging claws 68 and 69 with the design plate supporting engaging grooves 62 and 63. The vibration of 64 can be reduced. The design plate supporting engaging grooves 62 and 63 correspond to the "design plate supporting axial engaging groove", and the engaging claws 68 and 69 correspond to the "axially oriented engaging claw". Further, the circumferential direction holding portion 70 of the design plate 64 can prevent the design plate 64 from being displaced in the circumferential direction of the disk. As a result, the design plate 64 can be stably supported with respect to the caliper 61 also from this aspect.

In the first embodiment described above, a twin-bore configuration in which two pistons 13 are provided on the inner leg 6 of the caliper 5 has been described as an example. However, the present invention is not limited to this, and for example, a single bore configuration in which one piston is provided on the inner leg of the caliper may be used, or a configuration in which three or more pistons are provided on the inner leg of the caliper may be provided. This also applies to the second embodiment to the fifth embodiment. Further, it is needless to say that each embodiment is an example, and partial replacement or combination of the configurations shown in different embodiments is possible.

As the disc brake based on the embodiment described above, for example, the one described below can be considered.

As a first aspect, a caliper which is arranged so as to straddle the outer peripheral side of a disc that rotates with a wheel, has a cylinder into which a piston is inserted on the inner side, and has a claw on the outer side, and from the inner side of the caliper. A design plate that covers the inner side friction pad pressed against the disc by the piston, the outer side friction pad pressed against the disc by the claw portion from the outer side of the caliper, and the outer side of the claw portion of the caliper. In the disc brake provided with the above, the caliper is formed with an engaging groove for supporting the design plate, and the design plate has an engaging claw that engages with the engaging groove for supporting the design plate. The design plate is provided and is supported with respect to the caliper by engaging the engaging claw with the design plate supporting engaging groove of the caliper.

According to this first aspect, the design plate is elastically supported (fixed by elastic force) with respect to the caliper by engaging the engaging claw of the design plate with the engaging groove for supporting the design plate of the caliper. be able to. This makes it possible to reduce the vibration of the design plate. More specifically, the chattering noise of the design plate can be reduced, and the decrease in durability due to vibration can be suppressed. Moreover, since it is not necessary to change the basic shape of the caliper, the influence of the design plate on the caliper performance can be suppressed. Moreover, since the influence on the layout can be suppressed, it is not necessary to make a large change in the vehicle layout. It is also possible to remove the design plate when maintaining the disc brakes attached to the vehicle (eg, when replacing the friction pads). Therefore, after removing the design plate, it is possible to perform the same work as a normal caliper (caliper without a design plate). Further, it is also possible to support the design plate with respect to the caliper only by engaging the engaging claws with the design plate supporting engaging groove. In this case, it is possible to further reduce the vibration of the design plate and further improve the appearance. In either case, since the scale of the shape change from the base product (conventional product) is small, the productivity can be not impaired and the appearance can be improved.

As a second aspect, in the first aspect, the engaging portion between the engaging claw of the design plate and the engaging groove for supporting the design plate of the caliper is such that the design plate is oriented in the circumferential direction of the disk. It includes a circumferential engaging portion that prevents the design plate from being displaced, and an axial engaging portion that prevents the design plate from being displaced in the axial direction of the disk.

According to this second aspect, since the circumferential engaging portion and the axial engaging portion are provided, for example, even when the design plate is supported by the caliper only by these engaging portions, the design plate is calipered. Can be stably supported against. As a result, stable support of the design plate and reduction of vibration of the design plate can be achieved at a higher level.

As a third aspect, in the first aspect, the design plate has the design plate in the circumferential direction of the disk, in addition to the engagement claw that engages with the design plate support engagement groove of the caliper. A circumferential restraint is provided to prevent the displacement.

According to this third aspect, it is possible to prevent the design plate from being displaced in the circumferential direction by the circumferential holding portion of the design plate. As a result, the design plate can be stably supported against the caliper.

1 Disc brake 5,31,41,51,61 Caliper 7 Cylinder 12 Claw 13 Piston 14 Inner pad (Inner side friction pad)
15 Outer pad (outer side friction pad)
16,17,32,52,62,63 Engagement groove for supporting design plate 18,35,55,64 Design plate 22,23,39,59,68,69 Engagement claw 60,70 Circumferential holding part D disk

Claims (3)

A caliper that is placed across the outer peripheral side of the disc that rotates with the wheels, has a cylinder on the inner side into which the piston is inserted, and has a claw on the outer side.
A mounting member to which the caliper can be attached so as to be able to move the disk in the axial direction, and a mounting member.
The inner side friction pad pressed against the disc by the piston from the inner side of the caliper,
The outer side friction pad pressed against the disc by the claw portion from the outer side of the caliper, and
In a disc brake provided with a design plate that covers the outer side of the claw portion of the caliper.
The claw portion of the caliper has a circumferential engagement groove for supporting the design plate that prevents the design plate from moving in the circumferential direction of the disc on a surface facing the mounting member in the circumferential direction of the disc. Is formed and
The caliper is formed with an axial engagement groove for supporting the design plate that prevents the design plate from moving in the axial direction of the disc.
The design plate has a circumferential engagement claw that elastically engages with the design plate support circumferential engagement groove and an axial engagement that elastically engages with the design plate support axial engagement groove. It has claws and
The design plate elastically engages the circumferential engaging claw and the axial engaging claw with the design plate supporting circumferential engaging groove and the design plate supporting axial engaging groove of the caliper. Thereby, the disc brake is characterized in that it is supported by the caliper. A caliper that is placed across the outer peripheral side of the disc that rotates with the wheels, has a cylinder on the inner side into which the piston is inserted, and has a claw on the outer side.
A mounting member to which the caliper can be attached so as to be able to move the disk in the axial direction, and a mounting member.
The inner side friction pad pressed against the disc by the piston from the inner side of the caliper,
The outer side friction pad pressed against the disc by the claw portion from the outer side of the caliper, and
In a disc brake provided with a design plate that covers the outer side of the claw portion of the caliper.
An axial engagement groove for supporting the design plate is formed on the back surface of the inner leg of the caliper where the cylinder is provided to prevent the design plate from moving in the axial direction of the disc .
The design plate has an axial engagement claw that elastically engages with the axial engagement groove for supporting the design plate of the caliper, and a side surface of the caliper that faces the mounting member in the circumferential direction of the disc. A disc brake characterized by being provided with a circumferential holding portion that abuts and extends inward in the radial direction of the disc. A caliper that is placed across the outer peripheral side of the disc that rotates with the wheels, has a cylinder on the inner side into which the piston is inserted, and has a claw on the outer side.
The inner side friction pad pressed against the disc by the piston from the inner side of the caliper,
The outer side friction pad pressed against the disc by the claw portion from the outer side of the caliper, and
In a disc brake provided with a design plate that covers the outer side of the claw portion of the caliper.
The caliper is formed with an engaging groove for supporting the design plate.
The design plate is provided with an engaging claw that engages with the engaging groove for supporting the design plate.
The design plate is supported by the caliper by engaging the engaging claw with the design plate supporting engaging groove of the caliper.
The caliper has a bridge portion that extends from the inner leg portion on which the cylinder is provided to the outer side in the axial direction of the disc and is provided with a through hole that penetrates in the radial direction of the disc.
A female screw hole is formed in a portion of the bridge portion of the caliper that is separated from the through hole.
The disc brake is characterized in that the design plate is provided with an insertion hole which is opened at a position corresponding to the female screw hole of the caliper and into which a fixing screw screwed into the female screw hole is inserted.

Images