JP2009275782A - Pin slide type disc brake for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a two-system pin slide type disc brake can reduce weight and cost by decreasing the number of parts while securing stable braking force and can suppress eccentric wear of friction pads as much as possible. <P>SOLUTION: At a reaction part side of a caliper body 14, a reaction part side friction pad 17 is provided between a disc rotor 10 and front faces of a plurality of reaction force claws 14j, 14k, 14m. At an action part side, a single system friction pad 16 is provided between a disc rotor 10 and a front face of a single system piston 22 and a link system friction pad 15 is provided between a disc rotor 10 and a front face of a link system piston 21. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a pin slide type disk brake for a vehicle, and more specifically, a dual-system pin having a single brake system that operates only the front wheels and an interlocking brake system that operates the front wheels together with the rear wheels. The present invention relates to a disc brake for a slide type vehicle.

Conventionally, as a dual-system pin slide type vehicle disc brake, a deep bottom cylinder hole including at least two cylinder holes at least three on both sides and a shallower other shallow hole is formed. The bottom cylinder hole is arranged symmetrically with respect to the center line of the caliper body in the radial direction of the disk, and the liquid passage hole of the deep bottom cylinder hole is formed in the bottom wall portion of the shallow bottom cylinder hole to There was one in which the pressure path was divided into two systems (for example, see Patent Document 1).
No. 7-49085

  However, in the above-mentioned Patent Document 1, although it is possible to apply a pressing force to the friction pad in a well-balanced manner and suppress uneven wear of the friction pad, the number of pistons increases, the number of parts increases, and the weight also increases. The formation of the liquid passage hole is also troublesome and costly.

  Therefore, the present invention can reduce the number of parts while securing a stable braking force, reduce the weight and cost, and can reduce the uneven wear of the friction pad as much as possible. It aims to provide a type of disc brake.

  In order to achieve the above object, according to the first aspect of the present invention, the pin slide type vehicle disc brake has a working portion and a reaction portion of the caliper body opposed to each other on both sides of the disc rotor, and a piston is mounted on the working portion. A plurality of reaction force claws on the reaction part, and the action part is fixed to a caliper bracket fixed to the vehicle body on the action part side of the disk rotor via a pair of slide pins. A friction pad is arranged on the acting part side and the reaction part side with the disk rotor interposed therebetween so as to be slidable in the disk axial direction, and at least one of the pistons is braked for the front wheel by operating the first brake operator. The single piston that actuates the other wheel, and the other piston is operated together with the rear wheel brake and the front wheel brake by operating the second brake operator. In a pin slide type vehicle disc brake using an interlocking piston for operating a key, a reaction portion side friction pad is provided between the disc rotor and the front surfaces of the plurality of reaction force claws on the reaction portion side. And a single friction pad between the disk rotor and the front surface of the single piston, and an interlocking friction pad between the disk rotor and the front surface of the interlocking piston. It is characterized by having each.

  According to a second aspect of the invention, one interlocking friction pad is disposed on the disk entry side when the vehicle moves forward, and one individual friction pad is disposed on the disk delivery side when the vehicle moves forward. Yes.

  In a third aspect of the invention, the interlocking friction pad has a smaller contact area with the disk rotor than the single friction pad.

  In a fourth aspect of the invention, the reaction part side friction pad has a contact area that contacts the disk rotor in a portion facing the single system friction pad and the disk rotor in a portion facing the interlocking friction pad. It is characterized in that it is formed larger than the contact area in contact.

  In a fifth aspect of the present invention, the single friction pad and the interlocking friction pad disposed on the working portion side are respectively suspended by a single hanger pin and protruded inward in the radial direction of the disk toward the inner periphery of the disk. The caliper bracket is provided with a recessed groove portion that accommodates each protrusion so as to be movable in the axial direction.

  In a sixth aspect of the present invention, the friction pad disposed on the disk insertion side of the operating portion when the vehicle moves forward is such that the protruding portion abuts against the side surface of the groove when braking when the vehicle moves forward and when braking when the vehicle moves backward. It is characterized by receiving braking torque.

  According to a seventh aspect of the present invention, the friction pad disposed on the disk delivery side of the action portion when the vehicle moves forward is a torque receiving portion in which the disk delivery side surface of the friction pad is provided on the caliper bracket during braking when the vehicle moves forward. The projecting portion abuts against the disk insertion side surface of the concave groove portion and receives the braking torque during braking during reverse travel of the vehicle.

  According to an eighth aspect of the invention, one of the interlocking pistons is arranged on the disk feed-in side when the vehicle moves forward, and one single piston is arranged on the disk feed-out side when the vehicle moves forward. Yes.

  According to the pin slide type vehicle disk brake of the present invention, in the first invention, the single system friction pad in which the single type piston abuts the friction pad on the working part side that is easily worn away, and the interlocking type piston contact. Dividing into interlocking friction pads and sliding them individually to the disk rotor for each friction pad reduces the number of parts as much as possible to reduce costs and reduce size, while reducing frictional wear of the friction pad itself. Can be suppressed. Furthermore, friction pads having different wear characteristics can be used for each system. Further, since the reaction part side of the caliper body moves in parallel to the side surface of the disk rotor by the guide of the slide pin, the reaction part side friction pad is pressed against the disk rotor substantially evenly by the reaction force claw. Even with a single friction pad, uneven wear is unlikely.

  In the second aspect of the invention, the number of friction pads is made the minimum necessary number while suppressing uneven wear of the friction pads, so that the number of parts can be reduced.

  In the third aspect of the invention, the interlocking friction pad is formed with a smaller contact area with the disk rotor than the single friction pad, so that the friction pad is offset while ensuring a good braking force with a simple structure. Wear can be suppressed.

  In the fourth invention, the reaction part side friction pad is formed such that the contact area with the disk rotor in the portion facing the single friction pad is larger than the contact area with the disk rotor in the portion facing the interlocking friction pad. Therefore, the partial wear of the friction pad on the reaction portion side can be suppressed with a simple structure while ensuring a good braking force.

  In the fifth invention, the single friction pad and the interlocking friction pad are each suspended by a single hanger pin, and the protruding portion is accommodated in the concave groove portion. While being as short as possible, the single friction pad and the interlocking friction pad can be moved independently and satisfactorily. Further, when the caliper body is attached to the vehicle body, even if the friction pad is not arranged in the vertical direction, the protruding portion comes into contact with the concave groove portion, and play of the friction pad can be suppressed.

  In the sixth aspect of the invention, the friction pad disposed on the disk entry side receives the braking torque because the protruding portion abuts against the side surface of the groove when braking when the vehicle moves forward and when braking when the vehicle moves backward. While shortening the length of the body in the circumferential direction of the disk as much as possible, the braking torque of the friction pad disposed on the disk feed-in side can be satisfactorily received by the concave groove.

  In the seventh aspect of the present invention, the friction pad disposed on the disk delivery side receives the braking torque when the disk delivery side of the friction pad abuts on the torque receiving portion provided on the caliper bracket during braking when the vehicle moves forward. Therefore, the braking torque can be reliably received by the caliper bracket. In addition, during braking when the vehicle is traveling backward, the protruding portion abuts against the disk insertion side surface of the concave groove portion and receives braking torque, so that the braking torque when the vehicle is traveling backward can be satisfactorily received by the concave groove portion, The backlash of the friction pad can also be suppressed.

  In the eighth aspect of the invention, one interlocking piston with a small pressing force and braking torque is arranged on the disk inlet side, and one single piston with a large pressing force and braking torque is arranged on the disk outlet side. Even with a 2-pot pin slide type disc brake, it is possible to suppress uneven wear of the friction pad while ensuring a good braking force.

  1 to 8 are views showing an example of a pin slide type vehicle disc brake according to the present invention. FIG. 1 is a sectional view taken along the line II in FIG. 3, FIG. 2 is a sectional view taken along the line II-II in FIG. 4 is a plan view of the disc brake, FIG. 5 is a VV sectional view of FIG. 4, FIG. 6 is a VI-VI sectional view of FIG. 8, and FIG. 7 is a VII-VII sectional view of FIG. 8 is a system diagram of a disc brake device to which the disc brake of the present invention is applied. An arrow A in the figure indicates the rotational direction of the disc rotor during forward traveling of the vehicle, and the disc insertion side and the outlet side used in the following description are for the case of forward traveling of the vehicle.

  As shown in FIG. 8, the brake device 1 for the bar handle according to the present embodiment includes an independent brake system 4 that operates the disc brake 3 for the front wheel alone by operating the first brake operator 2, It has an interlocking brake system 7 that operates the disc brake 3 for the front wheel and the disc brake 6 for the rear wheel by operating the second brake operator 5.

  The disc brake 3 for the front wheel includes a caliper bracket 11 fixed to the vehicle body at one side of the disc rotor 10, a caliper body 14 supported by the caliper bracket 11 via a pair of slide pins 12 and 13, A single friction pad 16 and an interlocking friction pad 15 disposed on the side of the disk rotor 10 and a reaction part side friction pad 17 are provided.

  The caliper body 14 is a two-pot two-system system in which two cylinder holes 18 and 19 are divided into the two hydraulic systems 4 and 7, and an action portion 14a and a reaction portion 14b disposed on both sides of the disk rotor 10. Are connected by a bridge portion 14c straddling the outer periphery of the disk rotor 10. The action portion 14a is provided with mounting arms 14d and 14e projecting on the disk insertion side and the extraction side, and the caliper body 14 is attached to the caliper bracket by the slide pins 12 and 13 inserted through the mounting arms 14d and 14e. 11 is supported so as to be movable in the disk axial direction. On the disk delivery side of the bridge portion 14c, a cylindrical torque receiving pin 20 in which the flange portion at the base end is in contact with the side of the reaction portion of the caliper bracket 11 straddles the outer periphery of the disk rotor 10 in the disk axial direction. It protrudes in the direction of the reaction part.

  The torque receiving pin 20 is used to attach the slide pin 13 on the disk delivery side, the threaded portion of the slide pin 13 is inserted into the caliper bracket 11, and the flange portion 13 a of the slide pin 13 is operated to the working portion of the caliper bracket 11. The torque receiving pin 20 and the slide pin 13 are fixed to each other by screwing the torque receiving pin 20 into a male screw portion which is brought into contact with the side surface and protrudes to the side surface of the reaction portion of the caliper bracket 11.

  A small-diameter cylinder hole 18 is formed on the disk inlet side, and a large-diameter cylinder hole 19 is formed on the disk outlet side in the action portion 14a. A small-diameter interlocking piston 21 is formed in the cylinder hole 18 in the cylinder hole 19. Each of the large-diameter single-system pistons 22 is inserted into each of them, and hydraulic chambers 23 and 24 are defined between the pistons 21 and 22 and the bottoms of the cylinder holes 18 and 19, respectively. The hydraulic chamber 23 formed between the small-diameter interlocking piston 21 disposed on the disk inlet side and the bottom of the cylinder hole 18 is connected to the interlocking union via the hydraulic pipe 7 a of the interlocking brake system 7. Hydraulic fluid is supplied from the hole 14f, and the hydraulic pressure chamber 24 formed between the large-diameter single piston 22 and the cylinder hole 19 arranged on the disk delivery side has a hydraulic pipe for the single brake system 4. The hydraulic fluid is supplied from the single system union hole 14g through 4a. In addition, bleeder holes 14h and 14i communicate with the hydraulic chambers 23 and 24, respectively.

  An interlocking friction pad 15 is disposed between the front surface of the interlocking piston 21 and the disk rotor 10, and an independent friction pad 16 is disposed between the front surface of the independent system piston 22 and the disk rotor 10. The reaction portion 14b is provided with three reaction force claws 14j, 14k, and 14m at the disk insertion side, the disk discharge side, and the substantially circumferential center portion of the disk. The reaction force claws 14j, 14k, and 14m One reaction portion side friction pad 17 is disposed between the front surface and the disk rotor 10.

  The interlocking friction pad 15 is formed by joining a lining 15a that is slidably contacted with the disk rotor 10 and a back plate 15b that is suspended by a hanger pin 25. The hanger is disposed on the outer side of the back plate 15b in the disk radial direction. The insertion portion 15c of the pin 25 is provided with a protruding portion 15d that protrudes toward the inner periphery of the disc on the inner side in the disc radial direction. The interlocking friction pad 15 is hung so that the hanger pin 25 is inserted into the insertion portion 15c and the protruding portion 15d is inserted into the concave groove portion 11a formed in the caliper bracket 11 so as to be movable in the disk axis direction. By this attachment, the disk delivery side surface of the protrusion 15d and the disk delivery side surface of the groove 11a are brought into contact with each other.

  The single friction pad 16 is formed by joining a lining 16a that is slidably contacted with the disk rotor 10 and a back plate 16b that is suspended by a hanger pin 26. The hanger is disposed on the outer side of the back plate 16b in the disk radial direction. The insertion portion 16c of the pin 26 is provided with a protruding portion 16d that protrudes toward the inner periphery of the disc on the inner side in the radial direction of the disc. The single friction pad 16 is hung so that the hanger pin 26 is inserted into the insertion portion 16c and the protruding portion 16d is inserted into the concave groove portion 11b formed in the caliper bracket 11 so as to be movable in the disk axial direction. By this attachment, the disc delivery side surface 16e of the back plate 16b and the torque receiving portion 11c of the caliper bracket 11 come into contact with each other, and a gap E is formed between the disc delivery side surface of the protruding portion 16d and the concave groove portion 11b. The disk insertion side surface of the protrusion 16d and the groove 11b are in contact with each other.

  The interlocking friction pad 15 and the independent friction pad 16 have a length in the disk circumferential direction corresponding to the interlocking piston 21 having a small diameter, and the independent friction pad 16 has a large diameter. Since the circumferential dimension of the disk corresponding to the system piston 22 is provided, the lining 15a of the interlocking friction pad 15 has a disk rotor more than the contact area where the lining 16a of the single system friction pad 16 contacts the disk rotor 10. The contact area that contacts 10 is smaller.

  The reaction portion side friction pad 17 is configured by joining a lining 17 a that is slidably contacted with the disk rotor 10 and a back plate 17 b that is suspended by the hanger pins 25 and 26. The back plate 17b is provided with insertion portions 17c and 17c through which the hanger pins 25 and 26 are inserted, respectively, on the outer side in the radial direction of the disk, and a torque transmission arm 17d is provided on the disk delivery side. The torque transmission arm 17d is formed in a bifurcated shape with an opening on the disk delivery side, and a guide groove 17e for holding the torque receiving pin 20 is formed. Further, the portion of the lining 17a facing the interlocking system piston 21 is gradually shortened in the disk radial direction toward the disk insertion side.

  The reaction part side friction pad 17 is suspended so as to be movable in the disk axial direction by inserting hanger pins 25 and 26 into the insertion parts 17c and 17c and inserting guide grooves 17e into the torque receiving pins 20, respectively. The Further, the contact area with the disk rotor 10 is large on the disk delivery side of the lining 17a facing the single friction pad 16, and the contact area with the disk rotor 10 is on the disk rotor delivery side facing the interlocking friction pad 15. The contact area is small.

  The disc brake 3 of the present embodiment is configured as described above. In the single brake system 4, the hydraulic pressure generated in the first hydraulic master cylinder 2a by operating the first brake operator 2 is changed to the hydraulic pressure. It is supplied to the disc brake 3 for the front wheels through the pipe 4a, and is supplied to the hydraulic pressure chamber 24 on the disc delivery side of the caliper body 14 through the single system union hole 14g. Accordingly, the single system piston 22 presses the single system friction pad 16 to one side surface of the disk rotor 10. Next, due to this reaction, the caliper body 14 slides in the direction of the action part, and the reaction force claws 14j, 14k, 14m of the reaction part 14b press the lining 17a of the reaction part side friction pad 17 to the other side of the disk rotor 10. The front wheels are braked.

  Further, in the interlocking brake system 7, by operating the second brake operator 5, the hydraulic pressure generated in the second hydraulic master cylinder 5a passes through the hydraulic pipes 7a and 7b and the disc brake 3 for the front wheels and the rear. Supplied to both disc brakes 6 for wheels. In the disc brake 3 for the front wheel, when hydraulic pressure is supplied to the hydraulic pressure chamber 23 on the disk introduction side of the caliper body 14 through the interlocking system union hole 14f, the interlocking piston 21 is moved to one side surface of the disk rotor 10. Next, the caliper body 14 slides in the direction of the action part due to this reaction, and the reaction force claws 14j, 14k, 14m of the reaction part 14b attach the lining 17a of the reaction part side friction pad 17 to the other side of the disk rotor 10. The front wheel is braked by pressing toward.

  In the present embodiment, the reaction part side friction pad 17 that is hard to be unevenly worn is used as a single friction pad, and the single type friction pad 16 with which the single type piston 22 abuts the friction pad on the action part side and the interlocking type piston 21 abuts. By dividing into the interlocking friction pad 15, the number of parts can be reduced as much as possible while securing a stable braking force, and the cost and size can be reduced, and the friction pads 15, 16, 17 can be achieved. Uneven wear for each unit can also be suppressed. Further, since the number of friction pads is set to the minimum necessary number while suppressing uneven wear of the friction pads 15, 16, and 17, the number of parts can be reduced. Further, even if one piston is provided for each of the single system and the interlocking system without increasing the number of pistons as in the prior art, the pressing force is applied to each friction pad 15, 16, 17 in a balanced manner. Therefore, uneven wear of the friction pads 15, 16, and 17 can be prevented.

  Further, the interlocking friction pad 15 arranged on the disk entry side has a protrusion 15d formed on the inner side in the disk radial direction of the back plate 15b during braking when the vehicle moves forward and when braking when the vehicle moves backward. Since the brake torque is received by abutting on the side surface of the belt, there is no need to provide a separate torque receiving member between the friction pads 15 and 16, so the brake torque can be reduced while shortening the length of the caliper body 14 in the disk circumferential direction as much as possible. It can be received satisfactorily and the backlash of the interlocking friction pad 15 can be suppressed.

  Further, the single friction pad 16 disposed on the disk delivery side has a gap E between the groove delivery part 11b and the disk delivery side surface of the projecting part 16d. The disk delivery side surface of the single friction pad 16 abuts on a torque receiving portion 11c provided on the caliper bracket 11 to receive a braking torque. Thereby, a large braking torque generated during braking when the vehicle moves forward can be reliably received by the torque receiving portion 11c having a large area. Further, at the time of braking when the vehicle is moving backward, the protruding portion 16d abuts against the disk insertion side surface of the recessed groove portion 11b and receives the braking torque, so that the braking torque when the vehicle moves backward can also be received well by the recessed groove portion 11b. The backlash of the single friction pad 16 can also be suppressed.

  Further, even if the reaction part side friction pad 17 is a single friction pad, the reaction part side of the caliper body 14 moves parallel to the side surface of the disk rotor 10 by the guide of the slide pins 12 and 13. Therefore, the reaction force claws 14j, 14k, and 14m are almost evenly pressed against the side surface of the disk rotor 10 and are less likely to cause uneven wear.

  Further, an interlocking piston 21 having a small pressing force and braking torque is disposed on the disk introduction side of the caliper body 14, and an interlocking friction pad 15 having a small contact area with the disk rotor 10 is disposed, whereby the disk delivery side is arranged. A single system piston 22 having a large pressing force and braking torque is disposed at the same time, a single system friction pad 16 having a large contact area with the disk rotor 10 is disposed, and the reaction part side friction pad 17 is disposed on the disk delivery side. In addition, since the contact area with which the disk is brought into contact with the disk rotor 10 is formed smaller, uneven wear of the friction pads 15, 16, and 17 can be more effectively suppressed.

  Further, even when the friction pads 15 and 16 are not suspended so as to face in the vertical direction due to the mounting direction of the caliper body 14 to the vehicle body, the protruding portions 15d and 16d of the friction pads 15 and 16 are the recessed groove portions 11a of the caliper bracket. 11b, there is no possibility of the friction pads 15 and 16 becoming loose, and a stable braking force can be secured.

  In addition, the pin slide type vehicle disc brake of the present invention is not limited to two pots as in the above-described embodiment, but can be applied to three or more pots. What is necessary is just to set suitably by the number of. Further, a torque receiving member may be provided between a plurality of friction pads on the action part side, or each friction pad on the action part side may be suspended by a plurality of hanger pins. Further, the torque is not limited to the torque receiving pin that receives the braking torque of the reaction part side friction pad as in the above-described embodiment, and the torque is generated by the disk feeding side surface of the back plate contacting the torque receiving surface provided on the caliper bracket. You can also receive it. Further, the shape of the lining of the friction pad is arbitrary, and the material of the lining can be changed for each friction pad.

It is II sectional drawing of FIG. It is II-II sectional drawing of FIG. 1 is a side view of a vehicle disc brake showing an embodiment of the present invention. It is a top view of the disk brake for vehicles similarly. It is VV sectional drawing of FIG. It is VI-VI sectional drawing of FIG. It is VII-VII sectional drawing of FIG. It is a systematic diagram of a brake device to which a vehicle disc brake of the present invention is applied.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Brake device, 2 ... 1st brake operator, 2a ... 1st hydraulic master cylinder, 3 ... Disc brake for front wheels, 4 ... Single system brake system, 4a, 4b, 7a ... Hydraulic piping, 5 ... 1st 2 brake operation elements, 5a ... second hydraulic master cylinder, 6 ... disc brake for rear wheel, 7 ... interlocking brake system, 10 ... disc rotor, 11 ... caliper bracket, 11a, 11b ... concave groove, 11c ... torque Receiving part, 12, 13 ... slide pin, 14 ... caliper body, 14a ... action part, 14b ... reaction part, 14c ... bridge part, 14d, 14e ... mounting arm, 14f ... interlocking system union hole, 14g ... single system union hole 14h, 14i ... bleeder holes, 14j, 14k, 14m ... reaction force claws, 15 ... interlocking friction pad, 15a ... lining, 15b ... back plate, 15c ... insertion part, 5d ... Projection, 16 ... Single friction pad, 16a ... Lining, 16b ... Back plate, 16c ... Insertion part, 16d ... Projection, 16e ... Disc rotor feed side, 17 ... Reaction part side friction pad, 17a ... Lining 17b ... Back plate, 17c ... Insertion part, 17d ... Torque transmission arm, 17e ... Guide groove, 18, 19 ... Cylinder hole, 20 ... Torque receiving pin, 21 ... Interlocking piston, 22 ... Single piston, 23, 24 ... Hydraulic chamber, 25,26 ... Hanger pin

Claims (8)

The action portion and the reaction portion of the caliper body are arranged opposite to each other on both sides of the disk rotor, the action portion is provided with a plurality of cylinder holes that respectively accommodate the pistons, and the reaction portion is provided with a plurality of reaction force claws. Is supported by a caliper bracket fixed to the vehicle body on the working part side of the disk rotor so as to be slidable in the disk axial direction via a pair of slide pins, and on the working part side and the reaction part side across the disk rotor. Each friction pad is arranged, at least one of the pistons is a single piston that operates the front wheel brake by operating the first brake operator, and the other piston is used together with the rear wheel brake by operating the second brake operator. In a pin slide type vehicle disc brake using an interlocking piston for operating a brake for a front wheel, On the working part side, one reaction part side friction pad is provided between the disk rotor and the front surfaces of the plurality of reaction force claws, and on the action part side, the disk rotor and the single system piston are provided. A pin slide type vehicle disk brake comprising a single system friction pad between the front surface and an interlock system friction pad between the disk rotor and the front surface of the interlock system piston. 2. The interlocking friction pad is disposed on the disk entry side when the vehicle moves forward, and the single friction pad is disposed on the disk delivery side when the vehicle moves forward. Pin slide type vehicle disc brake. 3. The pin slide type vehicle disk brake according to claim 1, wherein the interlocking friction pad is formed to have a smaller contact area with the disk rotor than the single friction pad. The reaction area side friction pad has a contact area that contacts the disk rotor in a portion facing the single friction pad larger than a contact area that contacts the disk rotor in a portion facing the interlocking friction pad. 4. The pin slide type vehicle disc brake according to claim 3, wherein the pin brake is formed. The single friction pad and the interlocking friction pad arranged on the action part side are respectively suspended by one hanger pin, and provided with a protrusion that protrudes toward the inner periphery of the disk on the inner side in the disk radial direction, The pin slide type vehicle disc brake according to any one of claims 1 to 4, wherein the caliper bracket is provided with a concave groove portion that accommodates each protrusion portion so as to be movable in the axial direction. The friction pad arranged on the disk entry side when the vehicle moves forward of the acting portion receives the braking torque by the protrusion coming into contact with the side surface of the groove when braking when the vehicle moves forward and when braking when the vehicle moves backward. 6. A pin slide type vehicle disc brake according to claim 5, wherein: The friction pad disposed on the disk delivery side when the vehicle moves forward of the action part is configured such that the braking side is caused by the disk delivery side surface of the friction pad abutting against the torque receiving part provided on the caliper bracket during braking when the vehicle moves forward. The pin slide type vehicle disk brake according to claim 5 or 6, wherein the braking portion receives a braking torque by abutting against a disk insertion side surface of the concave groove portion during braking when the vehicle is moving backward. 8. The interlocking piston is disposed on the disk entry side when the vehicle moves forward, and the independent piston is disposed on the disk delivery side when the vehicle moves forward. A pin slide type vehicle disc brake according to any one of the preceding claims.

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