JP2007010072A - Floating caliper type disc brake - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce manufacturing cost and improve the durability of a support 3a. <P>SOLUTION: The support 3a consists of an inner side mounting member 19 arranged at a position deviating from a rotor to the inner side, and a pair of torque supporting members 20a, 20b joined to both ends of the inner side mounting member 19. At the front end of an inner side protruded portion 25 formed on the inner side end face of each of the torque supporting members 20a, 20b, a portion protruded from the side face of the inner side mounting member 19 through first through-holes 22, 22 of the inner side mounting member 19 is caulked and expanded to caulk and fix each of the torque supporting members 20a, 20b to the inner side mounting member 19. In this state, the inside face of the stepped portion 36 existing near the first through-holes 22, 22 of the inner side mounting member 19 is put in close contact with an outside face 76 of the inner side end of each of the torque supporting members 20a, 20b. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The floating caliper disc brake according to the present invention is used for braking a vehicle such as an automobile.

  Conventionally, as a disc brake for braking a vehicle such as an automobile, the caliper is supported by a support so as to be freely displaced in the axial direction, and a floating caliper in which a cylinder and a piston are provided only on one side of the caliper with respect to the rotor. The type is widely known and used widely in practice.

  This floating caliper type has various structures depending on the caliper holding method and the sliding method. For example, a structure called a pin slide type, which is currently in the mainstream, has a caliper for the support and a guide pin. Is supported so as to be displaceable. 34 to 35 show a structure described in Patent Document 1 among such pin slide type structures. The pin slide type floating caliper type disc brake displaces the caliper 2 with respect to the rotor 1 that rotates together with wheels (not shown) during braking. In the assembled state to the vehicle, the support 3 provided in a state adjacent to one side of the rotor 1 is fixed to the vehicle body (not shown) through the attachment hole 4. The caliper 2 is supported on the support 3 so as to be displaceable in the axial direction of the rotor 1.

  For this purpose, a pair of guide pins 5 at both ends in the width direction of the caliper 2 with respect to the rotational direction of the rotor 1, and a pair of guide holes 6 at both ends of the support 3, respectively, on the central axis of the rotor 1. It is provided in parallel. The guide pins 5 are inserted into the guide holes 6 so as to be slidable in the axial direction. Between the outer peripheral surfaces of the base end portions of the both guide pins 5 and the opening portions of the both guide holes 6, dustproof boots 7 are provided.

  In addition, on the both ends of the support 3 which are spaced apart in the circumferential direction of the rotor 1, both the turn-in side and the turn-out side engaging portions 8 and 9 are respectively provided. Each of the engaging portions 8 and 9 has a U-shaped bent end so as to straddle the outer peripheral portion of the rotor 1 in the vertical direction of FIG. 34, and pads 10 a and 10 b are attached to both the engaging portions 8 and 9. Both end portions of the pressure plates 11, 11 are engaged so as to be slidable in the axial direction of the rotor 1. A caliper 2 having a cylinder portion 12 and a claw portion 13 is disposed so as to straddle the pads 10a and 10b. Further, a piston 14 that presses the pad 10a on the inner side (the inner side in the width direction of the vehicle in FIG. 34) against the rotor 1 is liquid-tightly fitted into the cylinder portion 12.

  When braking is performed, pressure oil is fed into the cylinder portion 12, and the lining 15 of the inner pad 10 a is pressed against the inner surface of the rotor 1 from the top to the bottom of the rotor 1 by the piston 14. Then, as a reaction of the pressing force, the caliper 2 is displaced upward in FIG. 34 based on the sliding between the both guide pins 5 and the both guide holes 6, and the claw portion 13 is moved to the outer side (the vehicle side). The lining 15 of the pad 10 b on the outer side in the width direction (lower side in FIG. 34) is pressed against the outer surface of the rotor 1. As a result, the rotor 1 is strongly clamped from both the inner and outer side surfaces, and braking is performed.

  In the case of the structure shown in FIGS. 34 to 35 described above, the support 3 has a shape straddling the outer peripheral portion of the rotor 1 on both sides in the axial direction of the rotor 1. Such a support 3 has a considerably complicated shape when it is integrally formed by casting or the like, and an operation of machining a part of the support 3 occurs. That is, it is necessary to form locking portions 75 for engaging both end portions of the pads 10a and 10b on both the inner and outer sides of the support 3, and in the portions constituting the locking portions 75, respectively. Need to be machined. However, in the case of the above-described conventional structure, since the shape of the support 3 is complicated, the work for performing the machining is considerably troublesome, which causes the cost of the entire disc brake to increase.

  On the other hand, the support is composed of an inner side mounting member arranged at a position distant from the inner side of the rotor, and a torque receiving member coupled to the outer side of the inner side mounting member. It is also conceivable that the member and the torque receiving member are coupled by fastening means such as welding or a bolt. When the support is configured in this way, it is only necessary to provide a part for engaging each pad with a part of a small torque receiving member having a relatively simple shape, so that machining can be easily performed. there is a possibility. However, when the inner mounting member and the torque receiving member are joined by welding, the joining work becomes troublesome. Moreover, when it couple | bonds by a fastening means, a number of parts increases. For this reason, in the case of such a structure, there is still room for improvement that the manufacturing cost can be reduced.

Further, in the case where the inner side mounting member and the torque receiving member are coupled by welding or fastening means in this way, when a large braking torque is applied from the pad to the torque receiving member during braking, this braking torque is caused by welding. It is received by the inner mounting member through the joint and fastening means. For this reason, there is a possibility that an excessive force may be applied to the joint portion and the fastening means during braking, and there is still room for improvement that the durability of the support can be improved.
In addition to Patent Document 1, there are Patent Documents 2 to 5 as prior art documents related to the present invention.

JP-A-3-194224 JP 54-156972 A Japanese Utility Model Publication No. 54-30180 JP 2001-193769 A Japanese Utility Model Publication No. 57-165830

  The floating caliper type disc brake of the present invention has been invented in order to reduce the manufacturing cost and improve the durability of the support in view of the above situation.

The floating caliper type disc brake of the present invention includes a support, a pair of pads, and a caliper, like the conventionally known floating caliper type disc brake.
The support is fixed to the vehicle body adjacent to the rotor that rotates with the wheels.
The pair of pads are arranged on both sides of the rotor in the axial direction, and are guided by the support so as to be movable in the axial direction of the rotor.
The caliper has a claw portion provided on one of the bridge portions straddling the rotor and the pair of pads, and a cylinder portion provided on the other of the bridge portions and fitted with a piston.
As the piston is pushed out, braking is performed by pressing the pair of pads against the side surface of the rotor.
In particular, in the floating caliper type disc brake of the present invention, the support is disposed at an inner side mounting member disposed at a position distant from the inner side of the rotor, and the circumferential direction of the rotor of the inner side mounting member is A pair of torque receiving members coupled to both ends. Further, the inner side protrusions formed on the inner side surfaces of the torque receiving members are inserted into first through holes formed at both circumferential ends of the rotor of the inner side mounting member, and the inner side In the state where each torque receiving member is caulked and fixed to the inner side mounting member by caulking and widening the portion protruding from the inner side surface of the inner side mounting member through the first through hole at the tip of the protrusion, The side surface on the center side in the width direction that is present in the vicinity of each first through hole of the inner side mounting member is in close contact with the side surface of each torque receiving member.

  According to the floating caliper type disc brake of the present invention configured as described above, the inner side mounting member can have a simple plate-like structure (the shape does not change in the axial direction of the rotor). Further, since the torque receiving member can also have a simple shape, it is possible to easily perform the machining work on the coupling portion with the inner side mounting member and the portion receiving the braking torque from each pad. Further, since the torque receiving member can be made into a small part, the torque receiving member can be easily formed by forging. In this way, when the torque receiving member is formed by forging, the cost can be further reduced by cutting the material constituting the torque receiving member as compared with the case of forming the torque receiving member. As a result, according to the present invention, the cost of the entire disc brake can be reduced.

  Further, in the case of the present invention, each torque receiving member and the inner side mounting member are caulked and spread at the tip of the inner side protruding portion from the first through hole of the inner side mounting member. It is fixed by caulking. For this reason, it is not necessary to use a fastening member such as a screw or a joining means such as welding in order to connect each torque receiving member and the inner side mounting member. The torque receiving member and the inner side mounting member can be coupled.

  In addition, the peripheral portion of the first through hole of the inner side mounting member is deformed so that the thickness of the inner side mounting member is expanded along with the caulking work, so that the inner side mounting member is in the vicinity of each of the first through holes. The existing side surface in the width direction and the side surface of each torque receiving member can be brought into close contact with each other and pressed against each other. For this reason, at least a part of the braking torque applied to each pad during braking is a width existing in the vicinity of each first through hole of the inner side mounting member without passing through the inner side protrusion of each torque receiving member. It is transmitted to the inner mounting member through a contact portion between the side surface on the direction center side and the side surface of the torque receiving member. As a result, it is possible to reduce the load applied to the caulking portion provided at the inner-side protrusion during braking, sufficiently ensure the strength of the support, and improve the durability of the support.

When carrying out the present invention, preferably, as described in claim 2, the support is provided with an outer side reinforcing member disposed at a position distant from the rotor to the outer side. Further, the outer side protrusions formed on the outer side surface of each torque receiving member are inserted into the second through holes formed at both ends in the circumferential direction of the rotor of the outer side reinforcing member, and each outer side The outer side reinforcing member is caulked and fixed to each of the torque receiving members by caulking and spreading the portion of the projecting portion protruding from the outer side surface of the outer side reinforcing member through the second through hole.
According to this more preferable configuration, the strength of the support can be further increased, and in order to couple the outer side reinforcing member to each torque receiving member, a fastening member such as a screw or a joining means such as welding is used. The torque receiving member and the outer side reinforcing member can be coupled in a short time and at a low cost.

  More preferably, as described in claim 3, the caliper is supported by the support means provided between the caliper and the pair of pads, while allowing the rotor to move in the axial direction with respect to each pad, and the engagement with the support. Each pad is supported so that it can be removed.

  In the case of this more preferable configuration, by supporting each pad on the support, unlike the conventional structure shown in FIGS. 34 to 35, the caliper can be moved relative to the support in the axial direction of the rotor. This eliminates the need for a structure in which the guide pin coupled to the caliper and the guide hole formed in the support slide. For this reason, it is not necessary to use a bolt to connect the guide pin to the caliper, to form a through hole for inserting the bolt into the caliper, or to form the guide hole in the support. In addition, an inexpensive structure can be obtained. In particular, when the guide hole is formed, a laborious work such as processing the inner peripheral surface of the guide hole with high precision is required. According to the configuration described in claim 3, Work becomes unnecessary.

More preferably, the support means penetrates in the radial direction of the rotor through a holding member in which movement of the rotor radially outward is restricted by engagement with a pair of pads, and a bridge portion of the caliper. The engaging member engages with the holding member inserted through the opening provided in a state where the caliper is moved to restrict the movement of the caliper in the radial direction of the rotor.
According to this more preferable configuration, in order to guide the caliper so as to be movable in the axial direction of the rotor with respect to each pad, it is not necessary to form a hole for inserting the guide pin in the caliper or each pad. Reduction becomes easier to achieve.

More preferably, as described in claim 4, the caliper is provided with elastic force radially outward and circumferentially by the pad clip attached to the torque receiving member.
According to this more preferable configuration, the caliper shakiness can be suppressed by the pad clip having the function of restraining the shakiness of each pad with respect to the support. For this reason, it is not necessary to provide a member other than the pad clip, such as a hold spring, in order to prevent the caliper from rattling, and the number of parts can be reduced. Further, the pad clip can be easily attached to the support before the caliper is assembled to the support by a method similar to the conventional method. In addition, when assembling the caliper to the support, it is only necessary to assemble the caliper to the support while pressing it against the pad clip attached to the support against the elasticity, especially by pressing the pad clip with your hand so that it does not fall off. There is no need to consider. For this reason, the assembling property can be improved.

More preferably, as described in claim 5, a pair of elastic members are attached to both ends of the caliper in the circumferential direction of the rotor, and the caliper is detachably locked to the caliper while straddling the outer periphery of the rotor. To do. At the same time, by elastically pressing these elastic members against the support, the elastic members impart elastic force toward the radially outer side and the circumferential direction of the rotor by the elastic members.
According to this more preferable configuration, it is possible to suppress the rattling of the caliper by each elastic member, and it is not necessary to make the caliper and the elastic member slidably contact each other even when the disc brake is braked. Therefore, unlike the case where a part of the elastic member is slidably pressed against the caliper in order to suppress the caliper shakiness, it is not necessary to provide the caliper with a processing surface for sliding the elastic member. The extra machining work of finishing the machined surface with high accuracy is not required. In addition, when the elastic member locked to the caliper is made of a wire rod, the sliding contact portion between each elastic member and the support can be linear, and the displacement of the caliper relative to the support in the axial direction of the rotor can be further increased. It can be done smoothly.

  1 to 17 show a first embodiment of the present invention corresponding to claims 1, 3 and 4. Among these drawings, FIGS. 1 to 5 and 15 show the state of the finished product of the floating caliper type disc brake, and FIGS. 6 to 14 show the state of the assembly of the disc brake. The floating caliper type disc brake of this embodiment includes a support 3a, a pair of pads 10a and 10b, and a caliper 2a. Of these, the caliper 2a includes a claw portion 13 provided on one side of the bridge portion 17 straddling the rotor 1 rotating with the wheel and the pair of pads 10a, 10b, and a piston 14 provided on the other side of the bridge portion 17. And a cylinder portion 12 to be fitted. The pads 10a and 10b are arranged on both sides of the rotor 1 in the axial direction, and the support 3a is connected to the axial direction of the rotor 1 (left and right direction in FIG. 2, front and back in FIGS. 3 to 5 and 15 to 17). Direction) is supported and supported.

  In particular, in the case of the present embodiment, the support 3a is configured as shown in detail in FIGS. That is, the support 3a is located on the inner side in the axial direction of the rotor 1 relative to the rotor 1 (on the center side in the width direction of the vehicle, on the right side of FIGS. , 9 and 15, the back side of FIGS. 4, 16 and 17, the lower side of FIG. 10), and the inner side mounting member 19, and the inner side mounting member 19 are separate members. A pair of torque receiving members 20a and 20b are provided, and both the torque receiving members 20a and 20b are coupled and fixed to both ends in the circumferential direction of the rotor 1 of the inner side mounting member 19. Of these, the inner side mounting member 19 is a substantially U-shaped flat plate formed of a metal plate such as a steel plate having a certain thickness. A pair of mounting holes 4, 4 are formed at the lower end of the rotor 1. It is formed so as to penetrate in the axial direction. The inner side mounting member 19 is fixed to the vehicle body adjacent to the rotor 1 through the pair of mounting holes 4 and 4.

  Further, a pair of connecting arm portions 21 and 21 are provided at both ends of the inner side mounting member 19 in the circumferential direction of the rotor 1. A pair of first through holes 22, 22 parallel to the central axis of the rotor 1 is formed at the distal ends of the connecting arm portions 21, 21. Each of these first through holes 22, 22 is formed at a position outside the outer peripheral edge of the rotor 1 in the diameter direction of the rotor 1.

  On the other hand, the torque receiving members 20a and 20b are made of metal such as steel, as shown in detail in FIGS. 6 to 7, and are provided inside the torque receiving members 20a and 20b facing each other. The anchor portions 23a, 23b that are long in the axial direction of the rotor 1 (the left-right direction in FIG. 6, the front-back direction in FIG. 7), and the outer portions closer to the outer side in the longitudinal direction of the anchor portions 23a, 23b (outside in the vehicle width direction) 1, 2, 6, 8, 11 to 14, the left side of FIGS. 3, 5, 7, 9, and 15, the front side of FIGS. 4, 16, and 17, the upper side of FIG. In the portion, each of the torque receiving members 20a and 20b is provided with arm portions 24a and 24b that are connected in a state of being integrally formed on the outer side on the side away from each other. Further, inner side protrusions 25, 25 are provided on the inner side surfaces (the right side surface in FIG. 6, the front side surface in FIG. 7) of these arm portions 24 a, 24 b so as to protrude in the axial direction of the rotor 1.

  Each of the anchor portions 23a and 23b is an outer end portion in the radial direction of the rotor 1, and is a first portion 26 having an L-shaped cross section provided at the upper end portion, and an outer side end portion of the first portion 26. A second portion 27 protruding downward, which is the inner side in the radial direction. Further, the lower end portion (the radially inner end portion of the rotor 1) of the second portion 27 is protruded toward the mating torque receiving member 20b (or 20a), and the tip portion is bent toward the radially outer side of the rotor 1. A pulling anchor portion 28 having an L-shaped cross section is provided. Further, a locking projection 29 is provided on the upper end portion of the first portion 26 so as to protrude toward the counterpart torque receiving member 20b (or 20a) over the entire length. With this configuration, the first and second inner wall surfaces 30 and 31 that are substantially parallel to each other in the radial direction of the rotor 1 and the periphery of the rotor 1 are disposed inside the outer end portions of the torque receiving members 20a and 20b. First concave grooves 34 and 34 having third and fourth inner wall surfaces 32 and 33 that are substantially parallel to each other and spaced apart in the direction are formed. Further, a step portion 35 is formed on the lower surface of the inner side end portion of each of the arm portions 24a and 24b so as to maintain a gap with the outer peripheral edge portion of the rotor 1.

  The torque receiving members 20a and 20b each configured as described above are coupled to the inner side mounting member 19 in the following manner to constitute the support 3a. First, as shown in FIGS. 9 to 10, the torque receiving members 20 a and 20 b (torque receiving members) are inserted into the first through holes 22 formed at the distal ends of the coupling arm portions 21 of the inner side mounting member 19. For the member 20b, the inner protrusion 25 provided in FIGS. 2, 3, 6, 8, etc. is inserted. In other words, the first through holes 22 and the inner side protrusions 25 are engaged with each other in a concavo-convex manner. At the same time, the step portion 36 having an L-shaped cross section formed on the inner side surface (the surface on the center side in the width direction of the inner side mounting member 19 and the right side surface in FIGS. Inner end portions (front end portions in FIG. 9 and lower end portions in FIG. 10) of the anchor portions 23a and 23b provided on the torque receiving members 20a and 20b are made to enter inside. In this state, the inner side surface (the right side surface in FIGS. 9 to 10), which is the side surface of the stepped portion 36 in the vicinity of the first through hole 22 in the width direction, and the anchor portions 23a, A minute gap is provided between the outer side surface 76 of the inner side end portion 23b or loosely contacted. In this state, the caulking portion 65 (see FIG. 5) is formed by caulking and spreading the portion protruding from the inner side surface of the inner side mounting member 19 through the first through holes 22 at the distal end portion of the inner side projecting portion 25. 2 and 3), the torque receiving members 20a and 20b and the inner mounting member 19 are caulked and fixed. Further, in this state of caulking and fixing, the inner surface of the step portion 36 provided at the tip of the inner side mounting member 19 is pressed against the outer side surface 76 of the inner side end of each of the anchor portions 23a, 23b, These inner surface and outer surface are in close contact.

  The operation of caulking and fixing the torque receiving members 20a and 20b and the inner side mounting member 19 in this manner is performed as follows. First, in the state shown in FIGS. 9 to 10, the pads 10a and 10b at the inner side end portions (the front side end portion in FIG. 9 and the lower end portion in FIG. 10) of the anchor portions 23a and 23b of the respective torque receiving members 20a and 20b. A jig (not shown) is abutted against the inner side surface 77 on the side where the metal is disposed. Then, a pressing jig (not shown) is pressed against the portion protruding from each of the first through holes 22 at the tip end portions of the inner-side protrusions 25, 25, thereby caulking portions 65 (FIG. 2). 3). Since the caulking portion 65 is formed in this manner, the positioning accuracy of the inner side surface 77, which is a surface that receives the braking torque from each pad 10a, 10b of each torque receiving member 20a, 20b, can be ensured satisfactorily. Moreover, the peripheral part of the 1st through-hole 22 deform | transforms so that it may spread at the front-end | tip part of each said connection arm part 21 with a crimping operation | work. For this reason, in combination with the abutment of the jig against the inner side surface 77 of each of the torque receiving members 20a and 20b, the inner side surface of the portion deformed so as to spread at the distal end portion of each of the connecting arm portions 21. The inner side surface of the stepped portion 36 in the vicinity of the first through hole 22 and the outer side surface 76 of the inner side end portion of the anchor portions 23a, 23b constituting the torque receiving members 20a, 20b are in close contact with each other, They will push each other.

  In this state, the inner surface and the upper surface of the L-shaped inner surface of the L-shaped section at the inner side end of each anchor portion 23a, 23b and the second stepped portion 37 having the L-shaped section continuous below the respective stepped portions 36. Thus, a pair of second concave grooves 38 and 38 (FIGS. 3 and 15) having a substantially U-shaped cross section are configured. Each of these second concave grooves 38, 38 is a first inner wall surface 42 located on the radially outer end side of the rotor 1, and a second inner wall surface substantially parallel to the first inner wall surface 42. The upper surface of the second step portion 37 and a third inner wall surface 44 sandwiched between the first inner wall surface 42 and the upper surface of the second step portion 37 are provided. Then, substantially T-shaped engaging protrusions 39, 39, which are engaging portions provided at both ends of the pressure plate 11 constituting the inner side pad 10a, are engaged with the respective second concave grooves 38, 38. It can be used freely.

  Furthermore, it is an engaging part provided in the both ends of the pressure plate 11 which comprises the pad 10b of the outer side in the 1st recessed grooves 34 and 34 provided in the outer side edge part of each said torque receiving member 20a, 20b. The substantially T-shaped engagement protrusions 39 are freely engageable. The engagement protrusions 39, 39 provided at both ends of the pressure plate 11 constituting the outer side pad 10b, the center side surface in the width direction of the pad 10b, and the tip ends of the pulling anchor portions 28, 28, respectively. The fourth inner wall surfaces 33, 33, which are side surfaces, are opposed to each other in the circumferential direction of the rotor 1.

  The support 3a configured as described above has a pair of pad clips 40, 40, the inner surfaces of the first and second concave grooves 34, 38, and the concave grooves 34 of the torque receiving members 20a, 20b. It is attached so as to cover the part between 38. As shown in detail in FIGS. 8 and 15, the pad clips 40 and 40 are integrally formed of a metal plate having good corrosion resistance and elasticity, such as a stainless steel plate. Each of these pad clips 40, 40 has a function of preventing the pads 10a, 10b from rattling against the support 3a during non-braking, and the pressure plates 11, 11 constituting the pads 10a, 10b and the support 3a. And has a function of preventing the sliding portion from rusting. In addition, pressing elastic portions 41 and 41 are provided at the upper ends of the pad clips 40 and 40, respectively. Each of the pressing elastic portions 41 and 41 has a base end portion extending upward from the upper surface of each torque receiving member 20a and 20b in a state where the pad clips 40 and 40 are mounted on the support 3a. Each of the pressing elastic portions 41 and 41 connects the three leg portions 46 and 46 that can be pressed against the upper surfaces of the torque receiving members 20a and 20b, and the tip portions of the leg portions 46 and 46, respectively. The pressing pieces 47 and 47 are provided. Of these, the leg portions 46, 46 are directed toward the mounting side (the side away from each other between the pad clips 40, 40 on the right side in FIG. 15) at the upper ends of the body portions 48, 48 of the pad clips 40, 40. Each base end portion is connected to the bent portion, the middle portion of the portion extending to the mounting side is folded back into a U shape, and the opposite mounting side (the side where each pad clip 40, 40 approaches each other, A portion closer to the tip of the portion extending to the left side of 15 is bent toward the lower side opposite to the radial direction of the rotor 1 and the non-mounting side. The pressing pieces 47, 47 are S-shaped in cross section longer than the total length of the torque receiving members 20a, 20b, and connect the tip portions of the leg portions 46, 46 to each other.

  Such pad clips 40, 40 are formed on the support 3a between the inner surfaces of the first and second concave grooves 34, 38 and the concave grooves 34, 38 of the torque receiving members 20a, 20b. Attach to cover the part. Further, in this state, the lower surfaces of the leg portions 46 and 46 of the pressing elastic portions 41 and 41 are pressed against the upper surfaces of the torque receiving members 20a and 20b, and the tip portions and the pressing portions of the leg portions 46 and 46 are pressed. The piece 47 is projected inward (left side in FIG. 15) from the inner side surface (left side surface in FIG. 15) of the upper end of each torque receiving member 20a, 20b. As will be described later, each of the pressing pieces 47 is supported by the support 3a so that the caliper 2a is disposed between the torque receiving members 20a and 20b. Are elastically pressed against the lower surface of the stepped portions 49, 49.

  Further, at the inner end of each pad clip 40, 40, the inner end of each of the second concave grooves 38, 38 covers the inner end of the rotor 1 in the radial direction near the lower end (lower end). A bent portion 50 is provided that is bent outward (upward) in the radial direction. Then, with the pad clips 40, 40 mounted on the support 3a, the engaging protrusions 39, 39 provided at both ends of the pressure plates 11, 11 of the pads 10a, 10b are respectively connected to the first and second. The rotor 1 can be engaged with the concave grooves 34 and 38 through the pad clips 40 and 40 so as to be movable in the axial direction.

  The support 3a is coupled and fixed to a knuckle that also constitutes a suspension device (not shown) by bolts (not shown) inserted through mounting holes 4 and 4 provided in the inner side mounting member 19. As a result, the support 3 a is fixed to the vehicle body adjacent to the rotor 1. In this state, the support 3a is disposed so as to straddle the outer peripheral portion of the rotor 1 in the left-right direction in FIG.

  Further, the caliper 2a is moved in the axial direction of the rotor 1 by the support means 51 provided between the caliper 2a and the pads 10a and 10b with respect to the pads 10a and 10b supported by the support 3a. I support it. The support means 51 includes a holding member 52 formed by bending a metal plate into a substantially U-shaped cross section and bending both end edges opened downward toward each other, and an inner side of the holding member 52. The lock plate 53 is a locking member that can be inserted. The protrusion 54 having a substantially T-shaped cross section provided at the center in the width direction of the pressure plate 11 constituting each of the pads 10a and 10b can be moved relative to the holding member 52 in the axial direction of the rotor 1. It fits inside. In addition, a long hole 56 that is long in the axial direction of the rotor 1 is formed at the center of the bottom plate portion 55 constituting the holding member 52. Further, the pair of bent pieces 74, 74 provided at the opening edge of the holding member 52 causes the tip of the protrusion 54 of each pad 10 a, 10 b to come out from the inside of the holding member 52 to the inside in the radial direction of the rotor 1. Is blocking.

  Further, the holding member 52 is inserted into the through hole 57 formed in the central portion of the bridge portion 17 of the caliper 2 a with respect to the radial direction of the rotor 1 with the protrusions 54 of the pressure plates 11 fitted in the holding member 52. It is inserted from the inside to the outside. Then, the portion closer to the bottom plate portion 55 of the holding member 52 is protruded outward from the bottom surface of the groove portion 58 and the upper surface of the step portion 59 provided on the outer surface of the bridge portion 17 on both sides in the opening end axial direction of the through hole 57. Yes. The lock plate 53 placed on the outer surface of the bridge portion 17 is inserted in the axial direction of the rotor 1 inside the portion of the holding member 52 that protrudes outward. The lock plate 53 is made of a metal plate, and as shown in detail in FIG. 14, the lock plate 53 is the same as the length direction one end portion (the left end portion in FIG. 14) of both side edges in the width direction of the main body portion 60. A pair of arm portions 61, 61 bent in the direction, and a bent piece 62 having an L-shaped cross section provided at one end edge in the length direction of the main body portion 60 (left end edge in FIG. 14). Further, by bending the tip of the inner portion of the U-shaped notch 63 that is long in the axial direction of the rotor 1 formed at the center of the main body 60 to the outside in the radial direction of the rotor 1, the locking protrusion 64 is formed. Provided.

  Then, the lock plate 53 is protruded from the bottom surface of the groove portion 58 on the outer surface of the bridge portion 17 and the top surface of the step portion 59, inside the portion near the bottom plate portion 55 of the holding member 52. ) Is inserted. In this state, both end portions in the length direction of the lock plate 53 are stretched over the bottom surface of the groove portion 58 and the top surface of the step portion 59. That is, the lower surface of the front end of the main body 60 is brought into contact with the upper surface of the stepped portion 59, and the bent piece 62 is brought into contact with the bottom surface of the groove 58. With this configuration, the lock plate 53 is restricted from moving radially inward (downward in FIG. 14) of the rotor 1 with respect to the caliper 2 a and is engaged with the holding member 52.

  Further, by engaging the locking projection 64 formed on the lock plate 53 with the elongated hole 56 formed on the holding member 52, the lock plate 53 is inadvertently arranged in the axial direction of the rotor 1 from the inside of the holding member 52. Is prevented from getting out. When the lock plate 53 is taken out from the inside of the holding member 52, the distal end portion of the locking projection 64 of the lock plate 53 is elastically deformed radially inward of the rotor 1 and is pulled out from the long hole 56. Then, the lock plate 53 is pulled out from the inside of the holding member 52 in the axial direction of the rotor 1. Thus, by pulling out the lock plate 53 from the holding member 52, it is possible to remove the caliper 2a from the support 3a to the outside in the radial direction of the rotor 1 (upward in FIG. 14). In this way, the caliper 2a is engaged and disengaged with respect to the support 3a while allowing the pad 1a, 10b to move in the axial direction of the rotor 1 by the support means 51 comprising the holding member 52 and the lock plate 53. It is supported by the pads 10a and 10b as possible.

  Further, in this state, the portion closer to the tip of the pressing piece 47 provided at the tip of the pad clip 40, 40 attached to the support 3a is located on the lower surface of the stepped portion 49 provided on both sides in the width direction of the caliper 2a. 1 is elastically pressed to the outside in the radial direction. Further, the portion closer to the tip of the pressing piece 47 is elastically pressed against the circumferential side surface of the rotor 1 of the caliper 2a in this circumferential direction. With this configuration, the pressing piece 47 gives the caliper 2 a elasticity that is directed upward and in the circumferential direction of the rotor 1. As a result, the caliper 2a is elastically pulled up radially outward of the rotor 1 with respect to the support 3a, the engagement between the lock plate 53 and the holding member 52 placed on the caliper 2a, and the holding member 52 The displacement of the caliper 2a in the radial direction of the rotor 1 is restricted by the engagement with the protrusion 54 provided at the center in the width direction of each pressure plate 11. In this state, the upper side surfaces of the engaging protrusions 39, 39 provided at both ends of the pressure plate 11 of the pads 10a, 10b are respectively connected to the first, second through the pad clips 40, 40. It is elastically pressed against the first inner wall surfaces 30, 42 of the concave grooves 34, 38. And each pad 10a, 10b can move to the axial direction of the rotor 1 with respect to the support 3a. In this state, the engagement protrusions 39, 39 provided on the pressure plate 11 of each pad 10 a, 10 b, the radially inner side surface (lower side surface) of the rotor 1, and the first concave groove 34 are formed. A slight gap exists between the upper inner surface of the second inner wall surface 31 and the pad clips 40, 40 covering the upper surface of the second stepped portion 37 constituting the second concave groove 38. With this configuration, the caliper 2a is supported on the support 3a and the pads 10a and 10b without rattling so that the rotor 1 can move in the axial direction.

  In the case of the floating caliper type disc brake of the present embodiment configured as described above, the inner side mounting member 19 may have a simple plate-like structure (the shape does not change in the axial direction of the rotor 1). In addition, since each torque receiving member 20a, 20b can also have a simple shape, machining is performed on the connecting portion with the inner side mounting member 19 and the portion receiving the braking torque from each pad 10a, 10b. The work to be done can be done easily. Moreover, since each torque receiving member 20a, 20b can be made into a small part, these torque receiving members 20a, 20b can be easily formed by forging. In this way, when the torque receiving members 20a and 20b are formed by forging, unlike the case of the present embodiment, the cost is further reduced than when the torque receiving members are partially cut. it can. As a result, according to the present invention, the cost of the entire disc brake can be reduced.

  In the case of the present embodiment, the torque receiving members 20a, 20b and the inner side mounting member 19 are connected to the first through holes 22 of the inner side mounting member 19 at the tip ends of the inner side projections 25, 25. Caulking is fixed by caulking and spreading the protruding part. For this reason, it is not necessary to use a fastening member such as a screw or a joining means such as welding in order to connect each torque receiving member 20a, 20b and the inner side mounting member 19, and it is short and inexpensive. Further, the torque receiving members 20a and 20b and the inner side mounting member 19 can be coupled to each other.

  Further, since the peripheral portion of the first through hole 22 of the inner side mounting member 19 is deformed so as to expand with the caulking work, the vicinity of each of the first through holes 22 of the inner side mounting member 19 The inner side surface of the stepped portion 36 present in the inner surface and the outer side surface 76 of the inner side end portion of each torque receiving member 20a, 20b can be brought into close contact with each other and pressed against each other. For this reason, at least a part of the braking torque applied to each pad 10a, 10b at the time of braking does not go through the inner side protrusions 25, 25 of each torque receiving member 20a, 20b. It is transmitted to the inner side mounting member 19 through a contact portion between the inner side surface of the stepped portion 36 existing in the vicinity of the one through hole 22 and the outer side surface 76 of the inner side end portion of each torque receiving member 20a, 20b. It becomes like this. As a result, it is possible to reduce the load applied to the caulking portions 65, 65 provided on the inner-side protrusions 25, 25 during braking, to sufficiently secure the strength of the support 3a, and to improve the durability of the support 3a.

  Further, during braking of the floating caliper type disc brake of this embodiment, the braking torque applied from the rotor 1 to the outer pad 10b is caused by the rotation direction of the rotor 1 when the vehicle advances (see FIGS. The braking torque is supported not only by the support 3a by the torque receiving member 20a on the front side, but also by the torque receiving member 20b on the rear side in the rotational direction of the rotor 1. Received in 3a. That is, when the pads 10a and 10b are pressed against both side surfaces of the rotor 1 to brake when the vehicle moves forward, the pads 10a and 10b are dragged in the rotation direction of the rotor 1. When the braking torque is relatively small, as shown schematically in FIG. 16, the other end of the pressure plate 11 of each of the pads 10a and 10b (the left end in FIG. 3, the right end in FIGS. 4 and 16). The front surface of the engaging projection 39 provided in the rotation direction of the rotor 1 in the rotational direction is the first and second concave grooves 34 and 38 (second concave groove 38) of the torque receiving member 20a on the outlet side. Is pressed against the third inner wall surfaces 32 and 44 (see FIGS. 3, 4, and 15 for the third inner wall surface 44), which are the front side surfaces in the rotational direction of the rotor 1, as shown in FIGS. . The braking torque is received by the support 3a only by the torque receiving member 20a on the return side among the torque receiving members 20a and 20b on the return side and the return side. At this time, the front surface in the rotational direction of the rotor 1 of the engaging protrusion 39 provided at one end portion (left end portion in FIG. 16) of the pressure plate 11 constituting the outer side pad 10b, and the above-described torque receiving member on the turn-in side A slight gap d exists between the fourth inner wall surface 33 which is the inner surface of the pulling anchor portion 28 provided at 20b.

  On the other hand, when the braking torque becomes relatively large, as schematically shown in FIG. 17, the other end of the pressure plate 11 of each of the pads 10a and 10b (the left end in FIG. 3, the right end in FIGS. 4 and 17). The front side surface in the rotation direction of the rotor of the engaging projection 39 provided in the first part) is provided with first and second concave grooves 34 and 38 (in the second concave groove 38 provided in the torque receiving member 20a on the delivery side). The third inner wall surfaces 32 and 44 (see FIGS. 3, 4 and 15 for the third inner wall surface 44) shown in FIGS. 3, 4 and 15 are pressed with a strong force. As a result, the delivery side portion of the support 3a is greatly deformed, and the pads 10a and 10b are greatly moved forward in the rotational direction of the rotor 1. As a result, of these pads 10a and 10b, the front side surface in the rotational direction of the rotor of the engaging projection 39 provided at one end portion (left end portion in FIG. 17) of the pressure plate 11 constituting the outer side pad 10b is It is pressed against the fourth inner wall surface 33, which is the inner surface of the distal end portion of the pull anchor portion 28 provided in the torque receiving member 20 b on the turn-in side. Of the torque receiving members 20a, 20b on the return side and the return side, not only the braking torque is received by the torque receiving member 20a on the return side, but also the pull anchor portion 28 of the torque receiving member 20b on the return side. However, this braking torque is received by the support 3a.

  As a result, the braking torque can be shared by the torque receiving members 20a and 20b on the delivery side and the entry side, and excessive braking torque is applied to a part of the support 3a. The deformation of the support 3a can be sufficiently suppressed. In addition, as in this embodiment, even when the reinforcing portion for connecting the outer side ends of the torque receiving members 20a and 20b is not provided, the deformation of the support 3a can be suppressed, so that the deformation of the support 3a is suppressed. It is possible to reduce the weight while.

  In addition, in the case of the present embodiment, the support 3a is disposed on the inner side mounting member 19 disposed at a position distant from the inner side of the rotor 1 and on both ends of the inner side mounting member 19 in the circumferential direction of the rotor 1. A pair of torque receiving members 20a and 20b are combined. In addition, pulling anchor portions 28 and 28 are provided at outer end portions of the torque receiving members 20a and 20b, respectively. For this reason, each torque receiving member 20a, 20b can be made into a small part, and although each torque receiving member 20a, 20b has a complicated shape having the pulling anchor portions 28, 28, it is pulled out and pushed out. Due to the differently formed shape by molding or the like, it becomes easy to perform the operation of forming the pulling anchor portions 28, 28. On the other hand, unlike the case of the present embodiment, when the pulling anchor part is formed on a part of the large-sized support having an integral shape, it is necessary to form the pulling anchor part by cutting, and the processing time is long. Besides, the cutting edge of the cutting tool has to be put in a narrow space, and the machining work becomes troublesome. In the case of the present embodiment, such inconvenience can be eliminated. As a result, according to the present embodiment, the deformation of the support 3a at the time of braking can be sufficiently suppressed with an inexpensive and lightweight structure.

  In the case of the present embodiment, the caliper 2a with respect to each pad 10a, 10b is provided by the support means 51 comprising the holding member 52 and the lock plate 53 provided between the caliper 2a and the pair of pads 10a, 10b. The caliper 2a is supported by the pads 10a and 10b so as to be able to be engaged and disengaged with respect to the support 3a while allowing the rotor 1 to move in the axial direction. For this reason, unlike the conventional structure shown in FIGS. 34 to 35 described above, by supporting each pad 10a, 10b on the support 3a as in this embodiment, the caliper is set in the axial direction of the rotor with respect to the support. In order to be movable, it is not necessary to have a structure in which the guide pin coupled to the caliper and the guide hole formed in the support are slid. For this reason, it is not necessary to use a bolt to connect the guide pin to the caliper, to form a through hole for inserting the bolt into the caliper, or to form the guide hole in the support. In addition, an inexpensive structure can be obtained.

  In particular, in the case of this embodiment, the holding member 52 is restricted from moving outward in the radial direction of the rotor 1 by engagement with the pair of pads 10a, 10b. At the same time, the lock plate 53 is engaged with a portion closer to the bottom plate portion 55 of the holding member 52 inserted through a through hole 57 provided in a state of penetrating the bridge portion 17 of the caliper 2 a in the radial direction of the rotor 1. Thus, movement of the caliper 2a in the radial direction of the rotor 1 is restricted. For this reason, in order to guide the caliper 2a to the pads 10a and 10b so as to be movable in the axial direction of the rotor 1, holes for inserting guide pins are formed in the caliper 2a and the pads 10a and 10b. This eliminates the need for formation and makes it easier to reduce costs.

  In the case of the present embodiment, the caliper 2a is placed on the caliper 2a on the radially outer side of the rotor 1 by the pad clips 40, 40 attached to the torque receiving members 20a, 20b in a state of covering the torque receiving members 20a, 20b. Gives elasticity in the circumferential direction. For this reason, rattling of the caliper 2a can be suppressed by the pad clips 40, 40 having a function of suppressing rattling of the pads 10a, 10b with respect to the support 3a. For this reason, in order to suppress the rattling of the caliper 2a, it is not necessary to provide a member other than the pad clips 40, 40 such as a hold spring, and the number of parts can be reduced. Further, the pad clips 40, 40 can be easily attached to the support 3a before the caliper 2a is assembled to the support 3a by a method similar to the conventional method. When the caliper 2a is assembled to the support 3a, the caliper 2a may be assembled to the support 3a while being pressed against the pad clips 40, 40 attached to the support 3a against elasticity. There is no need to consider extra considerations such as holding it by hand so that it does not fall off. For this reason, the assembling property can be improved.

  Next, FIGS. 18 to 25 show a second embodiment of the present invention corresponding to claims 1 to 4. In the case of the present embodiment, the support 3b is disposed at a position distant from the rotor 1 (see FIGS. 2 to 5) on the outer side (the front side of FIGS. 18 to 20, 22 to 25, the upper side of FIG. 21). The outer side reinforcing member 78 is provided. The outer side end portions of the pair of torque receiving members 20 a and 20 b are connected by the outer side reinforcing member 78. As shown in detail in FIG. 19, the outer-side reinforcing member 78 is integrally formed by bending a metal plate such as a steel plate having a certain thickness, and is a portion near one end (the back side of FIG. 19). A pair of connecting arm portions 79 are provided at both ends of the portion of the rotor 1 in the circumferential direction. In addition, a pair of second through holes 80 and 80 parallel to the central axis of the rotor 1 are formed at the distal end portions (upper end portions) of the coupling arm portions 79 and 79. Each of these second through holes 80, 80 is formed at a position outside the outer peripheral edge of the rotor 1 in the diameter direction of the rotor 1. Further, step portions 81 and 81 are formed at the upper end portions of the inner side surfaces (surfaces on the center side in the width direction of the support 3b) of the coupling arm portions 79 and 79 of the outer side reinforcing member 78, respectively. Further, a reinforcing portion 82 is provided on the other end portion (front end portion in FIG. 19) of the outer side reinforcing member 78 by bending the outer diameter side of the rotor 1 into a U shape.

  On the other hand, in the case of the present embodiment, unlike the case of the first embodiment described above, a second anchor portion 28 having a pull anchor portion 28 is provided at the outer side end portions of the anchor portions 23a, 23b provided on the torque receiving members 20a, 20b. The two portions 27 (see FIG. 1 etc.) are not provided. Therefore, each of the anchor portions 23a and 23b is formed in an L-shaped cross section over the entire length in the length direction. Further, the outer side protrusions are formed on the outer side surfaces of the arm portions 24a and 24b provided on the torque receiving members 20a and 20b, respectively, on the portions aligned with the second through holes 80 and 80 provided on the outer side reinforcing member 78. 83 and 83 are provided so as to protrude in the axial direction of the rotor 1. Then, in a state where the torque receiving members 20a and 20b are caulked and fixed to the inner side mounting member 19 by inner side protrusions 25 provided on the torque receiving members 20a and 20b, the outer sides of the torque receiving members 20a and 20b are arranged. The side protrusions 83 and 83 are inserted through the second through holes 80 and 80 provided in the outer side reinforcing member 78. In this state, the anchor portions 23a constituting the torque receiving members 20a and 20b are provided on the inner sides of the step portions 81 and 81 provided near the upper ends of the coupling arm portions 79 and 79 of the outer side reinforcing member 78, The outer side end of 23b is entered. Then, at the outer side end of each of the outer side protrusions 83, 83, a portion protruded from the outer side surface of the outer side reinforcing member 78 through the second through holes 80, 80 of the outer side reinforcing member 78. By caulking and spreading, the outer side reinforcing member 78 and the outer side reinforcing member 78 are caulked and fixed by forming the caulking portions 84 and 84. In this state, the inner side surfaces (surfaces in the width direction of the support 3b) of the step portions 81 and 81 provided near the upper end of the outer side reinforcing member 78 are connected to the outer sides of the anchor portions 23a and 23b. The inner side surface and the outer side surface are brought into close contact with each other by pressing against the outer side surfaces 85 and 85 of the end portion.

  The operation of caulking and fixing the torque receiving members 20a and 20b and the outer side reinforcing member 78 in this manner is performed in the same manner as the caulking and fixing of the torque receiving members 20a and 20b and the inner side mounting member 19. Therefore, it is possible to satisfactorily ensure the positioning accuracy of the inner side surfaces 77 of the anchor portions 23a and 23b, which are surfaces that receive braking torque from the pads 10a and 10b of the torque receiving members 20a and 20b. Further, a stepped portion 81 existing in the vicinity of the second through holes 80, 80, which is the inner surface of the outer side reinforcing member 78 that is deformed so as to spread at the distal ends of the coupling arm portions 79, 79, The inner side surface of 81 and the outer side surfaces 85 and 85 of the outer side end portions of the anchor portions 23a and 23b constituting the torque receiving members 20a and 20b are in close contact with each other and pressed against each other.

  Further, in this state, the L-shaped inner surface of the outer end portion of each anchor portion 23a, 23b and the second L-shaped second section continuous below the step portions 81, 81 of the outer side reinforcing member 78 are provided. A pair of first concave grooves 87 and 87 (FIG. 20 and the like) having a substantially U-shaped cross section are configured by the inner side surfaces and the upper surface of the step portions 86 and 86. Each of these first concave grooves 87, 87 is a first inner wall surface 88 located on the radially outer end side of the rotor 1 and a second inner wall surface substantially parallel to the first inner wall surface 88. The upper surface of the second step portion 86 and a third inner wall surface 89 sandwiched between the first inner wall surface 88 and the upper surface of the second step portion 86 are included. Then, substantially T-shaped engagement protrusions 39, 39, which are engagement portions provided at both ends of the pressure plate 11 constituting the outer side pad 10b, in each of the first concave grooves 87, 87, Engagement is possible via pad clips 40, 40 attached to the support 3b.

In the case of the present embodiment configured as described above, since the outer side reinforcing member 78 that connects the outer side ends of the torque receiving members 20a and 20b is provided, the strength of the support 3b can be further increased. In order to connect the outer side reinforcing member 78 to each torque receiving member 20a, 20b, it is not necessary to use a fastening member such as a screw or a joining means such as welding. Each torque receiving member 20a, 20b and the outer side reinforcing member 78 can be combined. Since other configurations and operations are the same as in the case of the above-described first embodiment, the same parts are denoted by the same reference numerals, and redundant description is omitted.
In the case of this embodiment, after the torque receiving members 20a and 20b are caulked and fixed to the inner side mounting member 19, the outer side reinforcing member 78 is coupled and fixed to the torque receiving members 20a and 20b. However, unlike the case of the present embodiment, the inner side mounting member 19 can be coupled and fixed after the outer side reinforcing member 78 is coupled and fixed to the torque receiving members 20a and 20b.

  Next, FIGS. 26 to 33 show Embodiment 3 of the present invention corresponding to claims 1, 3 and 5. In the case of the present embodiment, unlike the above embodiments, the pad clip 40a, 40a attached to each torque receiving member 20a, 20b constituting the support 3a is attached to the pressing elastic portion 41 (see FIG. 1, etc.). ) Is not provided. Instead, in the case of the present embodiment, the caliper 2a in the width direction (the left-right direction in FIGS. 26, 29, 31 to 33, the up-and-down direction in FIG. 27) is shown in detail in FIG. A pair of pressing springs 68, 68 are mounted, and each of the pressing springs 68, 68 is elastically pressed against the support 3a. Each of the pressing springs 68, 68 is made of a metal wire such as spring steel, and has a linear base 69, a pair of legs 70, 70 connected to both ends of the base 69, and the legs 70. , 70 and substantially U-shaped pressing portions 71, 71 each having a base end connected to one end thereof. Each of the leg portions 70, 70 is connected to both ends of the base portion 69 and spreads in a C shape, and then curves in a direction perpendicular to the length direction of the base portion 69 (downward in FIG. 30). . Further, both ends of each of the pressing parts 71 and 71 are spread out in a letter C shape, and the tip part is directed to the base 69 side (upper side in FIG. 30).

  As shown in FIGS. 27 and 32, locking holes formed at both side positions (both positions in the left and right direction in FIG. 27) across the rotor 1 on the lower side surfaces of both ends in the width direction (vertical direction in FIG. 27) of the caliper 2a. 72 and 72 are detachably locked at both ends of the pressing springs 68 and 68 so as to straddle the outer periphery of the rotor 1. In this state, the bases 69 and 69 protrude laterally from both side surfaces of the caliper 2a in the width direction.

  The caliper 2a that holds the pressing springs 68 and 68 in this way is supported by the support 3a as follows. That is, the step portions 73 and 73 formed on the upper surfaces of the anchor portions 23a and 23b of the torque receiving members 20a and 20b constituting the support 3a with the base portions 69 and 69 of the pressing springs 68 and 68 locked to the caliper 2a. And the inner surface (surface on the caliper 2a side) of each of the step portions 73 and 73 are elastically pressed and locked. Therefore, each of the pressing springs 68 and 68 is bent from the free state. Then, elastic force directed toward the center in the width direction of the caliper 2a is applied to each of the locking holes 72 and 72 by the portions near the tips of the pressing portions 71 and 71 of the pressing springs 68 and 68, respectively. Moreover, the opening peripheral part of the locking holes 72 and 72 is elastically pressed upward by the lower part of the caliper 2a by the intermediate part of the pressing parts 71 and 71. Then, the pressing springs 68, 68 give the caliper 2 a elastic force directed radially outward (upper side) and circumferentially of the rotor 1. Further, at the portion closer to the bottom plate portion 55 of the holding member 52 fitted to the protrusions 54 (see FIGS. 4, 5, 11-13, etc.) provided on the pressure plates 11, 11 constituting the pads 10a, 10b, A lock plate 53 is inserted inside the portion of the caliper 2a that protrudes outward from the through hole 57, and the caliper 2a is prevented from moving radially outward of the rotor 1 with respect to the pads 10a and 10b. .

According to the floating caliper type disc brake of the present embodiment configured as described above, it is possible to suppress the rattling of the caliper 2a by the pressing springs 68 and 68, and even when the disc brake is braked, The pressing springs 68 and 68 do not have to be in sliding contact with each other. Therefore, unlike the case where a part of an elastic member such as a pad spring is slidably pressed against the caliper 2a in order to suppress the rattling of the caliper 2a, the caliper 2a is provided with a processing surface for sliding the elastic member. There is no need to provide it, and an extra machining operation such as finishing the machined surface with high accuracy is unnecessary. Moreover, when each of the pressing springs 68 and 68 is made of a wire as in the present embodiment, the base portions 69 and 69 of the pressing springs 68 and 68 and the stepped portion 73 of the torque receiving members 20a and 20b. , 73 are linearly slidably contacted with the upper surface and the inner surface, and the area of the slidable contact can be reduced. For this reason, the displacement of the caliper 2a relative to the support 3a in the axial direction of the rotor 1 can be performed more smoothly.
Since other configurations and operations are the same as those of the first embodiment shown in FIGS. 1 to 17 described above, the same parts are denoted by the same reference numerals, and redundant description is omitted.
In this embodiment, each of the pressing springs 68 and 68 may be any one that can provide the caliper 2a with a resilience directed radially outward and circumferentially of the rotor 1, and the position of the pressing portion, etc. It is not intended to limit.

The perspective view which shows the disk brake of Example 1 of this invention in the state which abbreviate | omitted the rotor. The figure which looked at the disc brake of Example 1 from the outer diameter side of the rotor. The figure seen from the right side of FIG. FIG. BB sectional drawing. The exploded perspective view of a support. The figure which looked at the torque receiving member of the right side of FIG. 6 from the inner side. The perspective view which shows the state which attaches a pad clip to a support. The C section expansion equivalent view of Drawing 3 showing the state where the inner side projection of the torque receiving member was inserted in the 1st penetration hole of the inner side attachment member in order to constitute support. DD sectional drawing of FIG. The perspective view which shows the state which assembles | attaches a pad to the support with which the pad clip was mounted | worn. The perspective view which shows the state which fits a holding member to each pad supported by the support. The perspective view which shows the state which attaches a caliper to a support and each pad. The perspective view which shows the state which inserts a lock plate in a holding member, after attaching a caliper to a support and each pad. The E section enlarged view of FIG. FIG. 6 is a schematic cross-sectional view showing a state in which braking torque is received by the support from the outer side pad during braking with a relatively small braking torque. FIG. 6 is a schematic cross-sectional view showing a state in which braking torque is received by the support from the outer side pad during braking with a relatively large braking torque. The perspective view which abbreviate | omits a rotor and shows the disk brake of Example 2 of this invention. FIG. 6 is an exploded perspective view of a support that constitutes the disc brake of the second embodiment. The perspective view which shows the state which attaches a pad clip to a support. Insert the inner side protrusion of the torque receiving member into the first through hole of the inner mounting member and the outer side protrusion of the torque receiving member into the second through hole of the outer reinforcing member to configure the support. The figure similar to FIG. 10 which shows the state which carried out. The perspective view which shows the state which assembles | attaches a pad to the support with which the pad clip was mounted | worn. The perspective view which shows the state which fits a holding member to each pad supported by the support. The perspective view which shows the state which attaches a caliper to a support and each pad. The perspective view which shows the state which inserts a lock plate in a holding member, after attaching a caliper to a support and each pad. The perspective view which abbreviate | omits a rotor and shows the disk brake of Example 3 of this invention. The figure seen from the radial direction inner side of the rotor of FIG. The figure seen from the upper part of FIG. The figure seen from the left of FIG. FIG. 6 is a perspective view showing a pair of pressing springs used in Example 3. The perspective view which looked at the state which locked the spring for a press similarly to the caliper from the outer-diameter side of the rotor. The perspective view similarly seen from the radial inside of the rotor. The perspective view which shows the state which inserts a lock plate in a holding member, after similarly supporting a caliper to a support. The figure seen from the outer diameter side of the rotor which shows an example of the conventional structure. The figure which looked at the left half part of FIG. 34 from the downward direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotor 2, 2a Caliper 3, 3a, 3b Support 4 Mounting hole 5 Guide pin 6 Guide hole 7 Bellows 8 Engagement side engagement part 9 Extraction side engagement part 10a, 10b Pad 11 Pressure plate 12 Cylinder part 13 Claw part DESCRIPTION OF SYMBOLS 14 Piston 15 Lining 17 Bridge part 18 Reinforcement part 19 Inner side attachment member 20a, 20b Torque receiving member 21 Coupling arm part 22 First through-hole 23a, 23b Anchor part 24a, 24b Arm part 25 Inner side protrusion 26 First part 27 Second portion 28 Pull anchor portion 29 Locking projection 30 First inner wall surface 31 Second inner wall surface 32 Third inner wall surface 33 Fourth inner wall surface 34 First concave groove 35 Step portion 36 Step portion 37 2nd step part 38 2nd concave groove 39 Engagement protrusion 40, 40a Pad clip 41 Elastic part 42 for press 42 1st inner wall face 44 3rd Wall surface 46 Leg portion 47 Press piece 48 Main body portion 49 Step portion 50 Bending portion 51 Support means 52 Holding member 53 Lock plate 54 Projection portion 55 Bottom plate portion 56 Long hole 57 Through hole 58 Groove portion 59 Step portion 60 Main body portion 61 Arm portion 62 Bending Piece 63 Notch 64 Locking protrusion 65 Caulking portion 68 Pressing spring 69 Base portion 70 Leg portion 71 Pressing portion 72 Locking hole 73 Stepped portion 74 Bending piece 75 Locking portion 76 Outer side surface 77 Inner side surface 78 Outer side reinforcing member 79 Coupling arm portion 80 Second through hole 81 Step portion 82 Reinforcing portion 83 Outer side projection portion 84 Caulking portion 85 Outer side surface 86 Second step portion 87 First concave groove 88 First inner wall surface 89 Third inner surface Wall

Claims (5)

A support fixed to the vehicle body adjacent to the rotor rotating with the wheel, a pair of pads disposed on both sides in the axial direction of the rotor and guided by the support so as to be movable in the axial direction of the rotor; The caliper has a claw portion provided on one of the bridge portions straddling the rotor and the pair of pads, and a cylinder portion provided on the other of the bridge portions and fitted with a piston. In the floating caliper type disc brake that performs braking by pressing the pair of pads against the side surface of the rotor as the piston is pushed out,
The support includes an inner side mounting member disposed at a position distant from the inner side of the rotor, and a pair of torque receiving members coupled to both ends of the inner side mounting member in the circumferential direction of the rotor. The inner side protrusions formed on the inner side surfaces of the torque receiving members are inserted into first through holes formed at both ends of the rotor in the circumferential direction of the inner side mounting member, and the inner side In the state where each torque receiving member is caulked and fixed to the inner side mounting member by caulking and widening the portion protruding from the inner side surface of the inner side mounting member through the first through hole at the tip of the protrusion, A floating carrier characterized in that the side surface of the inner side mounting member in the vicinity of each first through hole is in close contact with the side surface of each torque receiving member. Type disk brake.   The support includes an outer side reinforcing member disposed at a position distant from the outer side of the rotor, and the outer side protrusion formed on the outer side surface of each torque receiving member is connected to the rotor of the outer side reinforcing member. Are inserted into the second through holes formed at both ends in the circumferential direction, and caulked at the tips of the outer side protrusions through the second through holes from the outer side surfaces of the outer reinforcing members. The floating caliper type disc brake according to claim 1, wherein the outer side reinforcing member is caulked and fixed to each torque receiving member by spreading.   The caliper is supported by each pad so as to be able to be engaged and disengaged with respect to the support by the support means provided between the caliper and the pair of pads while allowing the rotor to move in the axial direction with respect to each pad. A floating caliper disc brake according to claim 1 or 2.   The floating caliper type disc brake according to any one of claims 1 to 3, wherein the pad clip attached to the torque receiving member gives the caliper elastic force radially outward and circumferentially of the rotor. .   A pair of elastic members at both ends of the caliper in the circumferential direction of the rotor are detachably locked to the caliper in a state of straddling the outer periphery of the rotor, and each elastic member is elastically pressed against the support. The floating caliper disc brake according to any one of claims 1 to 3, wherein each elastic member imparts elasticity to the caliper that is radially outward and circumferential in the rotor.

Images