JP2006038163A - Disc brake - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disc brake capable of improving working efficiency of assembling work. <P>SOLUTION: A through-hole 55 is formed in the cylinder shaft direction in the other end side divided body 45 of a push rod 44 for moving by pushing one end side divided body 46 by a pressing mechanism 32 in a state of allowing divided surfaces 45a and 46a to abut on each other by being divided into the one end side divided body 46 and the other end side divided body 45 in the cylinder shaft direction. The one end side divided body 46 and the other end side divided body 45 are connected while allowing the relative movement of a predetermined quantity in the cylinder shaft direction by a pin 57 inserted into the through-hole 55 and fixed to the one end side divided body 46. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a disc brake in which a piston slides in a cylinder not only by introduction of hydraulic pressure but also by a pressing mechanism.

  Conventionally, in a vehicle disc brake, the brake pad is pressed against the disc rotor by a piston propelled by hydraulic pressure from a master cylinder to brake the vehicle, and the piston is propelled by a cam mechanism driven by a wire or the like. There is a disc brake also serving as a parking brake that presses a brake pad against a disc rotor to maintain the vehicle in a stopped state.

  A parking brake combined type disc brake is provided with a wear compensation mechanism including a push rod (transmission member) and a clutch member screwed to the push rod. Thereby, even when the initial position of the piston moves forward due to wear of the brake pad, the parking operation can be performed with a predetermined stroke.

Such a wear compensation mechanism operates at the time of braking by normal hydraulic pressure, but pushes the push rod of the wear compensation mechanism together with the piston to prevent over-adjustment when the hydraulic pressure becomes high. . At this time, the push rod is provided with an O-ring that seals between the through hole at the bottom of the cylinder, and when the push rod is propelled by the high hydraulic pressure, the area of the O-ring is opposite to the propulsion direction. Hydraulic pressure is applied. This may adversely affect the output efficiency of the piston. For this reason, there is one in which the push rod is divided into two in the cylinder axial direction so that the hydraulic pressure applied to the O-ring does not act on the piston (for example, see Patent Document 1).
JP 2004-138240 A

  However, since the push rod is divided into two in the cylinder axial direction as described above, a new problem has arisen that the assembling work becomes complicated. In other words, since the push rod holds the spring with the spring cover, the spring is inserted into the spring cover, and one split body of the push rod is inserted into the spring cover with the spring interposed therebetween. It is necessary to overlap the other divided body and squeeze the spring cover to lock the other divided body. However, at this time, the position of the other divided body only overlaps with one divided body. Not determined. For this reason, it is necessary to perform the crimping operation of the spring cover while manually aligning the position of the other divided body with respect to the one divided body, and there is a problem that the work is complicated and the work efficiency is lowered.

  Therefore, an object of the present invention is to provide a disc brake capable of improving the work efficiency of the assembly work.

  In order to achieve the above object, the invention according to claim 1 is characterized in that a pair of pads disposed on both sides via a disk and a piston are slidably fitted to a bore of a bottomed cylindrical cylinder and the piston A caliper that brings the pair of pads into contact with the disk by sliding, a pressing mechanism that is disposed outside the bore of the cylinder and generates a pressing force in the sliding direction of the piston, and is disposed within the cylinder and the cylinder A transmission member that is divided into one end-side divided body and the other end-side divided body with respect to the axial direction and that moves while the one-end-side divided body is pressed and moved by the pressing mechanism; A clutch portion that is disposed in the bore, is screwed into the other end side divided body of the transmission member, contacts the piston, and is pressed by the transmission member to press the piston. In disc brakes with bets, the transmission member is characterized by comprising the one end divided body and said other end divided body linked while allowing relative movement of a predetermined amount of the cylinder axis.

  The invention according to a second aspect is the invention according to the first aspect, wherein the transmission member has a through-hole formed in one of the divided bodies, and the pin is inserted into the through-hole and fixed to the other divided body. The one end side divided body and the other end side divided body are connected to each other.

  According to the first aspect of the invention, since the one end side divided body and the other end side divided body of the transmission member are connected while allowing a predetermined amount of movement in the cylinder axial direction, they are connected in advance. As a result, they are not displaced from each other when the push rod is assembled. Therefore, the work efficiency of the assembly work can be improved.

  According to the second aspect of the present invention, the pin is inserted into the through hole formed in the one divided body of the transmission member and fixed to the other divided body, so that the one end side divided body and the other end are fixed by this pin. The side divided bodies are connected while allowing a predetermined amount of relative movement in the cylinder axis direction. For this reason, since the one-end-side divided body and the other-end-side divided body are connected in a state where the positional deviation in the cylinder radial direction is restricted by the pin and the through hole, the positional deviation in the cylinder radial direction can be prevented after assembly. As a result, the other end side divided body and the clutch member can be screwed together favorably.

  A disc brake according to an embodiment of the present invention will be described below with reference to the drawings.

  As shown in FIG. 1, the disc brake of the present embodiment is slidably supported with a carrier 11 fixed to a non-rotating portion of the vehicle and disposed on both sides of the carrier 11 via a disc 12. A pair of pads 13A and 13B, and a caliper 14 supported by the carrier 11 so as to be slidable along the axial direction of the disk 12 and sandwiching the pair of pads 13A and 13B from both sides. Yes.

  The caliper 14 has a bottomed cylindrical cylinder 18 that opposes the opening 17 on the opposite side of the disk 12 with respect to one pad 13A, and a disk path 19 that extends from the cylinder 18 across the outer periphery of the disk 12. And a caliper body 21 having a claw portion 20 extending from the disc path portion 19 and extending to the other pad 13B so as to face the opposite side of the disc 12.

  The caliper 14 is formed in a bottomed cylindrical shape, and slides in the axial direction of the cylinder 18 (referred to as the cylinder axial direction) to the bore 25 of the cylinder 18 of the caliper body 21 with the bottom 24 side facing the pad 13A. It has a piston 26 that is movably fitted, and a ring-shaped piston seal 27 that seals the gap between the piston 26 and the inner peripheral surface of the cylinder 18. The piston seal 27 is held in the seal groove 18A of the cylinder 18.

  The caliper 14 moves the piston 26 in the direction of the pad 13 </ b> A by the brake fluid pressure introduced between the cylinder 18 and the piston 26, so that the pair of pads 13 </ b> A and 13 </ b> B are moved between the piston 26 and the claw portion 20. The rotation of the disk 12 is braked by gripping from both sides.

  The piston 26 is moved in the direction from the cylinder 18 toward the claw portion 20 by the brake fluid pressure introduced into the cylinder 18 from a master cylinder (not shown) during normal braking by depressing the brake pedal. Is pressed against the disk 12 to generate a braking force. On the other hand, a parking brake mechanism 30 is provided in the cylinder 18 to generate a braking force by pressing the pair of pads 13 against the disk 12 by mechanically moving the piston 26 instead of the brake fluid pressure. Yes.

  The parking brake mechanism 30 has a cam mechanism (pressing mechanism) 32 that is disposed outside the bore 25 of the cylinder 18 and generates a pressing force in the sliding direction of the piston 26, that is, in the cylinder axial direction.

  That is, a cam hole 35 is formed in the bottom 33 of the cylinder 18 in a direction perpendicular to the cylinder axial direction and spaced from the bottom surface 34 that forms the bore 25. Further, a bottom hole 36 penetrating on the axis from the center position of the bottom surface 34 to the cam hole 35 is formed, and a cam mechanism 32 is provided in the cam hole 35 and the bottom hole 36.

  The cam mechanism 32 has a substantially cylindrical cam body 39 that is rotatably inserted into a cam hole 35 via a bearing 38. The cam main body 39 is formed with a cam recess 40 that is recessed in a substantially V shape from the outer peripheral surface in the radial direction toward the center. The cam recess 40 is offset at the most recessed position with respect to the central axis of the cam body 39.

  The cam mechanism 32 includes a cam rod 42 having one end inserted into the cam recess 40 and the other end disposed on the bottom hole 36 side. The cam rod 42 changes the amount of protrusion from the cam body 39 depending on the shape of the cam recess 40 when the cam body 39 is driven to rotate about an axis along a direction orthogonal to the cylinder axis direction. The cam body 39 is rotated by manual operation of a parking brake lever (not shown).

  A push rod (transmission member) 44 that is pressed by the cam rod 42 of the cam mechanism 32 and moves in the cylinder axial direction is provided in the cylinder 18.

  The push rod 44 is divided into a front divided body (the other end side divided body) 45 on the front side of the advancement, that is, the piston 26 side, and a rear divided body (one end side divided body) 46 on the rear side in the forward movement, that is, the cylinder bottom 33 side. It is divided into two by the surfaces 45a and 46a.

  The rear divided body 46 of the push rod 44 has a short shaft shape, and a fitting hole 47 having a circular cross-section at one location is formed at one end side in the axial direction to a midway position. . Further, an abutting recess 48 that is recessed in the axial direction is formed on the other end side in the axial direction of the rear divided body 46 up to a midway position.

  The rear divided body 46 is fitted into the bottom hole 36 of the cylinder 18 so as to be slidable in the cylinder axis direction with the central axis aligned with the cylinder axis. The distal end side of the cam rod 42 of the cam mechanism 32 is housed in the recess 48. A ring-shaped push rod seal 49 that seals these gaps is provided between the rear divided body 46 and the bottom hole 36 of the cylinder 18. The push rod seal 49 is held by the rear divided body 46.

  The front divided body 45 of the push rod 44 has a cylindrical portion 51 having a female thread 50 formed on the inner peripheral surface on one end side, and closes the other end side in the axial direction of the cylindrical portion 51 and spreads outward in the radial direction. As shown in FIG. 2, the bottom plate portion 52 is formed with two anti-rotation projections 53 projecting in the radial direction at opposite positions. Yes. Further, on the opposite side of the bottom plate portion 52 from the cylindrical portion 51 and on the outer diameter side, a plurality of locking recesses 54 that are recessed in the axial direction are formed at a constant pitch.

  As shown in FIG. 1, a through-hole 55 having a smaller diameter than the inner diameter of the cylindrical portion 51 is formed along the axial direction at the axial center position in the bottom plate portion 52 which is the inner range of the cylindrical portion 51. Therefore, a step-shaped through hole 56 including the inner peripheral portion of the cylindrical portion 51 and the through hole 55 is formed in the front divided body 45.

  Then, the front divided body 45 abuts the divided surface 45a opposite to the cylindrical portion 51 of the bottom plate portion 52 to the divided surface 46a on the fitting hole 47 side of the rear divided body 46, and in this state, A pin 57 is inserted into the through-hole 55 from the cylindrical portion 51 side, and the pin 57 is further press-fitted into the fitting hole 47 of the rear divided body 46 and fixed, thereby being connected to the rear divided body 46.

  The pin 57 is on one side in the axial direction and is slidably fitted into the through hole 55 and press-fitted into the fitting hole 47, and on the opposite side in the axial direction and larger than the shaft part 58. The shaft portion 58 is longer than the sum of the depth of the fitting hole 47 and the axial length of the through hole 55 by a predetermined amount. As a result, after the pin 57 is inserted into the through hole 55 in the shaft portion 58 and then press-fitted into the fitting hole 47 until it hits the bottom of the pin 57 and fixed to the rear divided body 46, the front divided body 45 is shown in FIG. As shown in FIG. 3, from the position where the abutment surface 45a abuts against the abutment surface 46a with respect to the rear divided body 46, as shown in FIG. The coupling is performed in a state in which a predetermined amount of relative movement in the axial direction is allowed until the contact position.

  A state in which the front divided body 45 is connected with the pin 57 as described above to the rear divided body 46 which is fitted in the bottom hole 36 of the cylinder 18 with the central axis aligned with the cylinder axis. Then, the through hole 55 is formed in the front axial body 45 in the cylinder axial direction, and the pin 57 inserted through the through hole 55 and fixed to the rear divided body 46 is connected to the rear divided body 46. The front divided body 45 is connected while allowing a predetermined amount of relative movement in the cylinder axis direction.

  On the bottom 33 side of the bore 25 of the cylinder 18, two guide grooves 60 that are recessed in the radial direction and extend in the cylinder axial direction are formed at opposite positions as shown in FIG. Further, the rotation projection 53 of the front divided body 45 is slidably fitted. Thereby, the front division body 45 is movable in the axial direction in a state where relative rotation with respect to the cylinder 18 is restricted.

  The parking brake mechanism 30 includes a clutch member 66 that is screwed into the female screw 50 of the cylindrical portion 51 of the front divided body 45 of the push rod 44 in the cylinder 18 with a male screw 63 formed on the outer diameter side of the shaft portion 62. The clutch member 66 is fitted to the piston 26 by a head portion 64 provided on the opposite side of the shaft portion 62 in the axial direction.

  Here, as for the inner diameter side of the piston 26, the bottom 24 side is a small-diameter inner diameter portion 68, and the opening side of the small-diameter inner diameter portion 68 is a larger-diameter inner diameter portion 69 having a larger diameter. A tapered surface portion 70 is formed between the portion 68 and the large-diameter inner diameter portion 69 so that the large-diameter inner diameter portion 69 side has a large diameter.

  The head portion 64 of the clutch member 66 has a fitting portion 72 that is fitted to the small-diameter inner diameter portion 68 of the piston 26 on the side opposite to the shaft portion 62, and is adjacent to the fitting portion 72 on the shaft portion 62 side. A tapered portion 73 that contacts the tapered surface portion 70 is formed.

  Here, when the amount of protrusion of the cam rod 42 is changed from small to large by rotating the cam body 39 of the cam mechanism 32, the rear divided body 46 and the front divided body 45 of the push rod 44, the clutch member 66, Linearly moves in the axial direction, and the clutch member 66 abuts against the taper surface portion 70 of the piston 26 at the taper portion 73 to slide the piston 26 toward the pad 13 with respect to the cylinder 18.

  The female screw 50 of the front divided body 45 of the push rod 44 and the male screw 63 of the clutch member 66 constitute a screwed portion 74, and the screwed portion 74 includes the front divided body 45 and the clutch member 66. The screw pitch is set so as to have a clearance that can move in the axial direction by a predetermined amount without rotating between each other.

  In addition, an air release hole 76 is formed on the bottom 24 side of the piston 26 to open the gap with the clutch member 66 to the atmosphere.

  In addition, a ring-shaped clutch member seal 77 is provided between the fitting portion 72 of the clutch member 66 and the small-diameter inner diameter portion 68 of the piston 26 to seal these gaps. The clutch member seal 77 is held by the fitting portion 72 of the clutch member 66.

  The parking brake mechanism 30 has an adjusting portion 80 that adjusts the position of the clutch member 66 and the front divided body 45 of the push rod 44 in the cylinder 18.

  The adjusting portion 80 is supported between the piston 26 and the clutch member 66 by a retaining ring 82 that is engaged with an engaging groove 81 formed in the large-diameter inner diameter portion 69 of the piston 26. When the piston 26 moves in the axial direction by the brake fluid pressure introduced into the cylinder 18, the piston 26 is caused to follow the piston 26 while rotating the clutch member 66 with respect to the push rod 44 which is substantially stopped. Move in the axial direction.

  Further, the adjusting portion 80 does not rotate the clutch member 66 relative to the front divided body 45 when the front divided body 45 of the push rod 44 linearly moves in the axial direction. The clutch member 66 is linearly moved integrally with the push rod 44 by a threaded portion 74 including the male screw 63.

  The parking brake mechanism 30 includes a spring cover 84 provided so as to cover a part of the clutch member 66 and a part of the front divided body 45 of the push rod 44 in the cylinder 18, and a front part of the push rod 44. A push rod urging spring 85 interposed between the bottom plate portion 52 of the body 45 and the piston 26 side of the spring cover 84 is provided.

  The spring cover 84 has a ring-shaped portion 87 into which the cylindrical portion 51 of the front divided body 45 and the shaft portion 62 of the clutch member 66 are inserted, and extends from the outer diameter side of the ring-shaped portion 87 to one side in the axial direction. A cylindrical portion 88, a plurality of locking pieces 89 (only one is shown in FIG. 1) cut and raised radially outward from the opposite side to the ring-shaped portion 87 of the cylindrical portion 88, and the cylindrical portion A plurality of, specifically, four extending piece portions 90 shown in FIG. 2 extending from the opposite side to the ring-shaped portion 87 of 88 in the axial direction are provided.

  The spring cover 84 extends so that each extended piece 90 passes outside the outer peripheral surface of the bottom plate portion 52 of the front divided body 45 of the push rod 44, and the extended distal end side is bent toward the axial center side. The rotation into the front divided body 45 is restricted by entering and locked into the locking recess 54 of the bottom plate portion 52 of the front divided body 45.

  That is, the front divided body 45 and the rear divided body 46 of the push rod 44 are previously connected by the pin 57 as described above, and the push rod biasing spring 85 and the front divided portion of the push rod 44 are connected to the spring cover 84. In a state where the body 45 and the small assembly of the rear divided body 46 are inserted, the respective extended piece portions 90 of the spring cover 84 are bent so as to enter the locking recesses 54, whereby the push rod biasing spring 85 with respect to the spring cover 84 is obtained. As a result, the spring cover 84 includes the front divided body 45 of the push rod 44 and the push rod biasing spring 85, and the push rod biasing spring 85 is pushed into the push rod. 44 to hold.

  As described above, before the front divided body 45 and the rear divided body 46, the push rod biasing spring 85, and the spring cover 84, which are connected in advance by the pin 57 of the push rod 44, are assembled to the cylinder 18. , A cartridge 101 of one assembly.

  Specifically, for example, the push rod biasing spring 85 is inserted so as to contact the ring-shaped portion 87 of the spring cover 84, and the front divided body 45 and the rear divided body that are connected to the push rod 44 by the pin 57 in advance. 46 is inserted into the push rod urging spring 85 on the cylindrical part 51 side of the front divided body 45 so that the bottom plate part 52 passes through the inside of the extension piece 90 and is brought into contact with the push rod urging spring 85. . In this state, each extended piece 90 of the spring cover 84 is bent so as to enter the locking recess 54 of the bottom plate portion 52 of the front divided body 45.

  A locking step 106 is formed in the cylinder 18. The locking step 106 includes an annular engaging groove 107 formed on the inner peripheral surface of the bore 25 of the cylinder 18 and a C-shaped retaining ring 108 that engages with the engaging groove 107. Yes.

  When assembling the above disc brake, the bearing 38 and the cam body 39 are inserted into the cam hole 35 of the caliper body 21 and the cam recess 40 is directed toward the bottom hole 36. In this state, the cam rod 42 is moved to the caliper body 21. The cylinder 18 is inserted from the opening 17 side and further inserted into the cam recess 40 through the bottom hole 36.

  Next, the cartridge 101 pre-assembled as described above is inserted into the cylinder 18 from the opening 17 side with the push rod seal 49 attached, and the rear divided body 46 of the push rod 44 is connected to the bottom portion of the bottom portion 33. The cam rod 42 is inserted into the contact recess 48 while being fitted into the hole 36.

  Then, a C-shaped retaining ring 108 is inserted into the cylinder 18, and the retaining ring 108 is engaged with the engagement groove 107 of the cylinder 18. Then, the retaining ring 108 locks the locking piece 89 of the spring cover 84 of the cartridge 101 to restrict the cartridge 101 from coming off.

  On the other hand, the clutch member 66 to which the clutch member seal 77 is attached is fitted to the piston 26, and the adjustment portion 80 is locked to the piston 26 by the retaining ring 82, whereby the piston 26, the clutch member 66, and the adjustment portion 80 are engaged. As a separate assembly, the caliper 14 is assembled by screwing the clutch member 66 into the push rod 44 while fitting the assembly into the cylinder 18.

  In the disc brake having such a configuration, when the cam main body 39 of the cam mechanism 32 is rotated by operating a parking brake lever (not shown), the cam rod 42 of the cam mechanism 32 increases the protruding amount, and the push rod 44 The rear divided body 46 moves in the direction of the disk 12. Then, the front divided body 45 is pressed with the rear divided body 46 in contact with the divided surface 46a at the divided surface 45a, and moves integrally with the rear divided body 46 in the direction of the disk 12, and the clutch member integrally therewith. 66 moves to move the piston 26 in the direction of the disk 12 and mechanically press the pair of pads 13 against the disk 12.

  On the other hand, when the brake fluid pressure is introduced between the cylinder 18 and the piston 26 by a brake operation with a normal brake pedal, the fluid pressure acts on the piston 26 with respect to the pressure receiving area by the piston seal 27, and the direction of the disk 12. The driving force will be generated. On the other hand, the hydraulic pressure also acts on the clutch member 66 with respect to the pressure receiving area by the clutch member seal 77 to generate a propulsive force in the direction of the disk 12. The piston 26 is pushed by moving in the axial direction without rotating by the screwing clearance in the screwing portion 74.

  When the brake fluid pressure is further introduced into the cylinder 18 and exceeds a predetermined fluid pressure, the clutch member 66 is pressed against the piston 26 by the fluid pressure acting on the clutch member 66, and the fluid pressure is applied to the piston 26. As a result, a driving force in the direction of the disk 12 is generated, and a hydraulic pressure also acts on the clutch member 66 to generate a driving force in the direction of the disk 12.

  At this time, on the other hand, hydraulic pressure also acts on the rear divided body 46 of the push rod 44 with respect to the pressure receiving area by the push rod seal 49, and a propulsive force in the opposite direction to the disk 12 is generated. Since the push rod 44 is divided into the front divided body 45 and the rear divided body 46 as described above, the propulsive force in the opposite direction to the disc 12 of the rear divided body 46 is given to the front divided body. As shown in FIG. 3, the front part of the pin 57 fixed to the rear part 46 is brought into contact with the bottom face 45b. The body 45 is separated from the rear divided body 46 and can move in the direction of the disk 12.

  According to the disc brake of the present embodiment described above, the pin 57 is inserted into the through hole 55 formed in the front divided body 45 of the push rod 44 and fixed to the rear divided body 46, whereby this pin 57, the front divided body 45 and the rear divided body 46 are coupled while allowing a predetermined amount of relative movement in the cylinder axis direction. Since the front divided body 45 and the rear divided body 46 of the push rod 44 are thus connected while allowing a predetermined amount of movement in the cylinder axis direction, the push rod 44 can be connected in advance. These will not be shifted from each other during assembly. Therefore, the work efficiency of the assembly work can be improved. Further, since the front divided body 45 and the rear divided body 46 are connected in a state where the positional deviation in the cylinder radial direction is restricted by the pin 57 and the insertion hole 55, the positional deviation in the cylinder radial direction is prevented after assembly. As a result, the front divided body 45 and the clutch member 66 can be screwed together satisfactorily.

  The pin 57 is fixed to the rear divided body 46 by press-fitting into the fitting hole 47 of the rear divided body 46. However, the present invention is not limited to this, and the pin 57 may be fixed by screw fitting or adhesive bonding.

  Further, as shown in FIG. 4, the relationship between pin insertion and fitting may be reversed between the front divided body 45 and the rear divided body 46. That is, a step-shaped through hole 56 is formed in the rear divided body 46, a fitting hole 47 is formed in the front divided body 45, and the shaft portion 58 of the pin 57 is connected to the through hole 55 of the rear divided body 46. You may make it fit in the fitting hole 47 of the front part division body 45 after inserting.

  Furthermore, although illustration is omitted, the relationship between the male screw and the female screw of the screw part 74 of the front divided body 45 and the clutch member 66 may be reversed. That is, a male screw may be formed on the front divided body 45 and a female screw may be formed on the clutch member 66.

It is sectional drawing which follows the YY line in FIG. 2 which shows the disc brake of one Embodiment of this invention. It is an end elevation of the cut surface which follows the XX line in Drawing 1 which shows the rear part division object of the push rod in the disc brake of one embodiment of the present invention. It is sectional drawing of the principal part which shows the disc brake of one Embodiment of this invention, Comprising: The rear part division body and the front part division body show the state which left | separated. It is sectional drawing of the principal part which shows the modification of the disc brake of one Embodiment of this invention, Comprising: The rear part division body and the front part division body show the state which left | separated.

Explanation of symbols

12 disc 13A, 13B pad 14 caliper 18 cylinder 26 piston 32 cam mechanism (pressing mechanism)
44 Push rod (transmission member)
45 Front segment (the other end segment)
46 Rear segment (one-end segment)
55 Through hole 57 Pin 66 Clutch member

Claims (2)

A pair of pads arranged on both sides via a disc;
A caliper that slidably fits the piston into the bore of the bottomed cylindrical cylinder and that causes the pair of pads to contact the disk by sliding the piston;
A pressing mechanism disposed outside the bore of the cylinder and generating a pressing force in the sliding direction of the piston;
The one end side divided body is pressed and moved by the pressing mechanism in a state of being arranged in the cylinder and divided into one end side divided body and the other end side divided body with respect to the cylinder axial direction. A transmission member that,
A clutch member disposed in the bore of the cylinder, screwed into the divided member on the other end side of the transmission member, abutted on the piston, and pressed by the transmission member to press the piston; In the disc brake,
The disc brake according to claim 1, wherein the transmission member connects the one end side divided body and the other end side divided body while allowing a predetermined amount of relative movement in the cylinder axial direction. The transmission member forms a through hole in one divided body, and connects the one end side divided body and the other end side divided body by a pin inserted through the through hole and fixed to the other divided body. The disc brake according to claim 1, wherein

Images