JP2006322571A - Floating caliper type disk brake - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To sufficiently restrain deformation of a support 3a with a low cost and light weight structure. <P>SOLUTION: The support 3a is constituted by an inner side fitting member 19 disposed in a position deviated to the inner side more than a rotor, and a pair of torque receiving members 20a and 20b connected to rotor peripheral direction both ends of the inner side fitting member 19. Pulling anchor parts 28 having an end bent to an outside diameter side of the rotor and having an L-shaped cross section are provided on second portions 27 arranged on a part close to a radial inner end of the rotor of an outer side end of the respective torque receiving members 20a and 20b. Engagement protrusions 39 disposed on a pad 10b on the outer side are opposed to the respective pulling anchors 28 along the peripheral direction of the rotor. <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. 29 to 30 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 in FIG. 29, and pads 10 a and 10 b are attached to 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. 29) against the rotor 1 is liquid-tightly fitted in 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 this pressing force, the caliper 2 is displaced upward in FIG. 29 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 (vehicle The lining 15 of the pad 10 b on the outer side in the width direction (lower side in FIG. 29) 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. 29 to 30 described above, the pressure plates 11, 11 constituting the pads 10 a, 10 b are respectively connected to the engagement portions 8, 9 provided on the support 3. The end is engaged. For this reason, the braking torque generated in each of the pads 10a and 10b during braking in the forward traveling state of the vehicle is the rotation direction of the rotor 1 (the direction indicated by the arrow A in FIGS. 29 and 30). ) It is received by the support 3 only by the delivery side engaging portion 9 located on the front side. In this case, when the strength of the delivery side engaging portion 9 is not particularly taken into consideration, the delivery side engaging portion 9 is easily deformed by receiving a braking torque during braking. On the other hand, in the case of the structure shown in FIGS. 29 to 30 described above, the outer side end portions of the turn-in side and turn-out side engaging portions 8 and 9 are connected by the reinforcing portion 18. . For this reason, by ensuring the rigidity of this reinforcement part 18, a deformation | transformation of the delivery side engaging part 9 can be suppressed. However, if the cross-sectional area of the reinforcing portion 18 is increased in order to increase the rigidity of the reinforcing portion 18, the weight increases. Further, the presence of the reinforcing portion 18 is an obstacle when considering a significant weight reduction of the floating caliper type disc brake, and it is difficult to secure a space with the wheel. For this reason, the realization of the structure which can fully suppress the deformation | transformation of the support 3 at the time of braking with the structure which can achieve weight reduction at low cost is desired.
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 sufficiently suppress deformation of the support at the time of braking with an inexpensive and lightweight structure in view of the above-described circumstances.

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 It comprises a pair of torque receiving members coupled to both ends. Further, at least one torque receiving member of the pair of torque receiving members is provided with a pulling anchor portion whose tip is bent in the radial direction of the rotor. Then, the circumferential side surface of the rotor, which is the inner side surface of the tip of the pull anchor portion, and the engaging portion provided at one end of at least one of the pads are opposed to the circumferential direction of the rotor. ing.

  In the case of the floating caliper type disc brake of the present invention configured as described above, a part of the braking torque applied to the one pad by the rear side surface in the rotational direction of the rotor of the other torque receiving member of the pair of torque receiving members. In this way, when the braking torque becomes relatively large, a part of the braking torque can be handled even at the tip of the pull anchor portion provided on one torque receiving member. For this reason, it is possible to prevent excessive braking torque from being concentrated on a part of the support, and to sufficiently suppress deformation of the support. In addition, it is possible to eliminate the reinforcing portion that connects the outer side ends of the pair of torque receiving members, or even if a reinforcing portion exists, the cross-sectional area of the reinforcing portion can be reduced, so that deformation of the support is suppressed. It is possible to reduce the weight, and it is easy to secure a space with the wheel.

  Moreover, in the case of the present invention, since the one torque receiving member can be a small part, the one torque receiving member is pulled out despite having a complicated shape having a pulling anchor portion, Due to the deformed shape by extrusion molding or the like, the operation of forming the pulling anchor portion is facilitated. On the other hand, when the pulling anchor part is formed on a part of the large integrated support, it is necessary to form the pulling anchor part by cutting, which not only increases the processing time but also in a narrow space. The cutting edge of the cutting tool must be inserted, and the machining operation is difficult. According to the present invention, such inconvenience can be eliminated. As a result, according to the present invention, the deformation of the support during braking can be sufficiently suppressed with an inexpensive and lightweight structure.

  When the present invention is implemented, preferably, as described in claim 2, the caliper can be moved in the axial direction of the rotor with respect to each pad by the support means provided between the caliper and the pair of pads. In addition, each pad is supported so that it can be engaged with and disengaged from the support.

  In the case of this preferable configuration, by supporting each pad on the support, unlike the conventional structure shown in FIGS. 29 to 30 described above, in order to enable the caliper to move in the axial direction of the rotor with respect to the support, 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, when the guide hole is formed, a troublesome processing operation of accurately processing the inner peripheral surface of the guide hole is required. However, according to the configuration described in claim 2, such inconvenience is caused. Can be eliminated.

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 3, an anchor portion having a pull anchor portion at least at one end portion of at least one end portion in the length direction of at least one torque receiving member of the pair of torque receiving members. Provide. At the same time, the anchor portion is provided with a concave groove having two inner wall surfaces facing each other in the radial direction of the rotor and two inner wall surfaces facing each other in the circumferential direction of the rotor, and further, An engagement portion provided at one end of the pressure plate constituting one of the pads is engageable.
In the case of this preferable configuration, the anchor portion having the pulling anchor portion has a complicated shape. For this reason, the support is configured by 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. By adopting the one, the effect that it is possible to easily process the torque receiving member having the anchor portion and to reduce the manufacturing cost becomes remarkable.

More preferably, as described in claim 4, the pull anchor portion is provided only on the outer side of the rotor of at least one torque receiving member.
According to this more preferable structure, the operation | work which shape | molds a torque receiving member can be easily performed by a forging process (header process). On the other hand, unlike the case of the configuration described in claim 4, when a pair of pulling anchor portions are provided on both the inner and outer sides of the rotor of the torque receiving member, the rotor is placed between these pulling anchor portions. It is necessary to provide a recessed portion that is recessed to straddle. In this case, it becomes difficult to press the punch for processing the material constituting the torque receiving member from the side of the portion serving as the pulling anchor portion, and the torque receiving member cannot be formed by forging. According to the configuration described in claim 4, it is sufficient to provide the anchor portion only at one place of the torque receiving member, and it is not necessary to provide a recessed portion that is recessed so as to straddle the rotor. Can be easily molded.
Further, when a braking torque is applied from each pad to the torque receiving member, the torque receiving member has a long distance from the outer side pad and a large moment acting on the outer side with the mounting portion of the inner side mounting member as a fulcrum. Furthermore, if the reinforcement part which connects outer side parts is lost, it will displace more largely than an inner side at an outer side. According to the configuration described in claim 4, since the braking torque can be shared by the pair of torque receiving members on the outer side, deformation of the support can be suppressed more effectively. On the other hand, when the anchor is provided only on the inner side of the inner and outer sides of the torque receiving member, and the braking torque is shared and supported by the pair of torque receiving members only on the inner side Because the distance between the point of action of the force applied to the torque receiving member from the pad on the inner side and the mounting part of the inner side mounting member is close and the moment acting on the inner side is small, The effect is small and is insufficient as an effect of suppressing the displacement of the outer side portion of the support. For this reason, it is difficult to effectively suppress the deformation of the support. According to the configuration described in claim 4, such inconvenience can be eliminated, and deformation of the support can be effectively suppressed.

More preferably, as described in claim 5, the pulling anchor portion is configured such that, among the torque receiving members, the torque which is the rear side (turn-in side) in the rotation direction of the rotor when the vehicle moves forward. Provided only on the outer side of the receiving member with respect to the rotor.
According to this more preferable configuration, it is sufficient to provide only one anchor portion on the support, and the torque receiving member can be manufactured more easily. In the case of the support, when the vehicle is moving forward, if a pulling anchor portion is provided on the front side (rotating side) in the rotational direction of the rotor, the case where the vehicle takes the braking torque by the pulling anchor portion may be reversed. The frequency is reduced only during braking, and the braking torque for the reverse is usually small. For this reason, the effect of the absence of the pull anchor portion on the delivery side is practically small.

More preferably, as described in claim 6, the pad clip attached to the torque receiving member gives the caliper elasticity radially outward and circumferentially of the rotor.
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, the caliper may be assembled while being pressed against the pad clip attached to the support against the elasticity, and placed on the upper surfaces of both ends in the circumferential direction of the rotor of the support. It is not necessary to give extra consideration to the calipers, such as giving elastic force directed radially outwards, holding springs, so as not to drop out, and holding them down by hand. For this reason, the assembling property can be improved.

More preferably, as described in claim 7, 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. Machining work to finish 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 15 show Embodiment 1 of the present invention corresponding to claims 1 to 4 and 6. Among these drawings, FIGS. 1 to 5 and 13 show the state of the finished product of the floating caliper type disc brake, and FIGS. 6 to 12 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 13 to 15). 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 of the rotor 1 (on the center in the width direction of the vehicle, on the right side of FIGS. 1, 2, 6, 8 to 12, on the front side of FIGS. 3, 5, 7, and 13, FIG. 14 and 15, the inner side mounting member 19 disposed at a position distant from the inner side mounting member 19, and a pair of torque receiving members 20 a and 20 b which are members different from the inner side mounting member 19. These torque receiving members 20a and 20b are coupled and fixed to both ends in the circumferential direction of the rotor 1 of the 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 through holes 22, 22 parallel to the central axis of the rotor 1 are formed at the distal ends of the coupling arm portions 21, 21. Each of these 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 and 23b which are long in the axial direction of the rotor 1 (left and right direction in FIG. 6, front and back direction in FIG. 7), and the outer portions of the anchor portions 23a and 23b (outward in the width direction of the vehicle, FIG. , 6, 8 to 12 on the left side, the back side of FIGS. 3, 5, 7, and 13 and the front side of FIGS. 4, 14, and 15), the torque receiving members 20a and 20b are integrally formed on the outer side on the side away from each other. Arm portions 24a and 24b connected in a state where Further, insertion 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. And a second portion 27 projecting to the lower end side, which is the inner end 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 for preventing interference with the outer peripheral edge portion of the rotor 1 is formed on the lower surface of the inner side end portion of each of the arm portions 24a, 24b.

  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, the insertion protrusions 25 and 25 provided on the torque receiving members 20a and 20b are inserted into the through holes 22 and 22 formed at the distal ends of the coupling arm portions 21 and 21 of the inner side mounting member 19, respectively. insert. In other words, the through-holes 22 and 22 and the insertion protrusions 25 and 25 are engaged with each other in an uneven manner. At the same time, each of the connecting arm portions 21, 21 is provided inside the stepped portions 36, 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). Inner side end portions of the anchor portions 26, 26 provided on the torque receiving members 20a, 20b are advanced. In this state, the insertion protrusions 25, 25 are formed by caulking and spreading the portions protruding from the respective through holes 22, 22 at the inner side ends of the insertion protrusions 25, 25. The projections 25 and 25 are caulked and fixed to the inner side mounting member 19. Further, in this state, the inner surface and the upper surface of the L-shaped inner surface of the L-shaped section at the inner end of each anchor portion 26, 26, 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 13) 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.

  Further, the first concave grooves 34, 34 provided at the outer side end portions of the torque receiving members 20a, 20b are engaging portions provided at both end portions of the pressure plate 11 constituting the outer side pad 10b. The substantially T-shaped engagement protrusions 39 are freely engageable. And the width direction center side surface of the pad 10b of the engagement protrusions 39, 39 provided at both ends of the pressure plate 11 constituting the outer side pad 10b, and the inner side surfaces of the tip end portions of the respective pull anchor portions 28, 28 The fourth inner wall surfaces 33 and 33 are opposed to each other in the circumferential direction of the rotor 1.

  Further, a pair of pad clips 40, 40 are formed on the support 3a configured in this manner, 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 13, 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. Each of the leg portions 46, 46 is directed to the mounting side (the side away from each other between the pad clips 40, 40 on the right side in FIG. 13) 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, 13 is bent toward the lower side that is the radially inner side 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 protruded inward (left side in FIG. 13) from the inner side surface (left side surface in FIG. 13) 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. A portion of the holding member 52 that is close to the bottom plate portion 55 protrudes outward from the bottom surface of the groove portion 58 and the top surface of the step portion 59 provided on the outer surface of the bridge portion 17 on both sides of the opening end of the through hole 57. 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. 12, the lock plate 53 is the same as one end portion in the length direction (the left end portion in FIG. 12) of both side edges in the width direction of the main body portion 60. A pair of arms 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 60 (left end edge in FIG. 12). 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. 12) 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. 12). 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, during braking, the braking torque applied from the rotor 1 to the outer pad 10b is the rotational direction of the rotor 1 when the vehicle moves forward (FIGS. 2-5, 14 and 15 (in the direction indicated by the arrow B), not only is it received by the support 3a by the torque receiving member 20a on the front side, but also by the torque receiving member 20b on the back side in the rotational direction of the rotor 1. The braking torque is received by the support 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 behave in the rotational direction of the rotor 1. When the braking torque is relatively small, as shown schematically in FIG. 14, 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 14). 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 13 for the third inner wall surface 44), which are the front side surfaces of the rotor 1 in the rotational direction. . 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 projection 39 provided at one end portion (left end portion in FIG. 14) of the pressure plate 11 constituting the outer side pad 10b, and the torque receiving member on the above-described entrance 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. 15, 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 15). 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 13) (see FIGS. 3, 4, and 13 for the third inner wall surface 44) are pressed with a strong force. As a result, the deformation of the delivery side portion of the support 3a is increased, and the pads 10a and 10b are largely 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 engagement protrusion 39 provided at one end portion (left end portion in FIG. 15) of the pressure plate 11 constituting the outer side pad 10b, 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, and the deformation of the support 3a is suppressed. It is possible to reduce the weight.

  In addition, in the case of the present invention, the support 3a is coupled to the inner side mounting member 19 disposed at a position away from the inner side of the rotor 1 and to both ends of the inner side mounting member 19 in the circumferential direction of the rotor 1. The pair of torque receiving members 20a and 20b. 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. In addition, the cutting edge of the cutting tool must be placed in a narrow space, which makes the machining operation extremely difficult. In the case of the present invention, such inconvenience can be eliminated. As a result, according to the present invention, the deformation of the support 3a during 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. 29 to 30 described above, by supporting the pads 10a and 10b on the support 3a as in the present embodiment, the caliper is placed 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.

  Further, in the case of the present embodiment, anchor portions 23a and 23b having pulling anchor portions 28 and 28 are provided at the outer side end portions of the torque receiving members 20a and 20b, and the outer portions of the anchor portions 23a and 23b are provided. First and second inner wall surfaces 30 and 31 spaced from each other in the radial direction of the rotor 1 and third and fourth inner wall surfaces 32 and 33 spaced from each other in the circumferential direction of the rotor 1 are disposed at the side end portions. The first concave groove 34 is provided, and the first concave groove 34 is further engaged with engagement protrusions 39 and 39 provided at both ends of the pressure plate 11 constituting the outer side pads 10a and 10b. Is possible. For this reason, in the case of a present Example, the anchor parts 23a and 23b which have the pull anchor parts 28 and 28 become a complicated shape. Accordingly, the support 3a is disposed at a position distant from the rotor 1 on the inner side, and the pair of torque receiving members are coupled to both ends of the inner side mounting member 19 in the circumferential direction of the rotor 1. By adopting the one composed of 20a and 20b, the effect that the torque receiving members 20a and 20b having the anchor portions 23a and 23b can be easily processed and the manufacturing cost can be suppressed is remarkable. Become. Further, the first concave grooves 34 and 34 have first to fourth inner wall surfaces 30 to 33, and the outer side pads 10a and 10b are engaged inside the first concave grooves 34 and 34, respectively. The protrusions 39 can be engaged. For this reason, these engagement protrusions 39, 39 do not come off from the first concave grooves 34, 34, and the outer side pad 10b does not fall off carelessly due to deformation or the like.

  In the case of this embodiment, the pulling anchor portions 28 and 28 are provided only on the outer side of the rotor 1 among the torque receiving members 20a and 20b. For this reason, the operation | work which shape | molds each of these torque receiving members 20a and 20b can be easily performed by a forging process (header process). On the other hand, unlike the case of the present embodiment, when a pair of pulling anchor portions are provided on both the inner and outer sides of the rotor 1 of the torque receiving members 20a and 20b, the rotor 1 is interposed between these pulling anchor portions. It is necessary to provide a recessed portion that is recessed so as to straddle. In this case, it becomes difficult to press the punch for processing the material constituting the torque receiving members 20a and 20b from the side of the portion serving as the pulling anchor portion, and the torque receiving members 20a and 20b are formed by forging. It becomes difficult to mold. In the case of the present embodiment, it is only necessary to provide the anchor portions 28 and 28 at only one place of the torque receiving members 20a and 20b, and it is not necessary to provide a recessed portion that is recessed so as to straddle the rotor. 20a and 20b can be easily formed by forging.

  Further, when braking torque is applied to the torque receiving members 20a and 20b from the pads 10a and 10b, the torque receiving members 20a and 20b use the mounting portion of the inner side mounting member 19 to the vehicle body as a fulcrum to perform this operation from the outer side pad 10b. The distance to the mounting part is long and the moment acting on the outer side is large. Furthermore, if the reinforcement part which connects outer side parts is lost, it will displace more largely than an inner side at an outer side. When the pulling anchor portions 28, 28 are provided only on the outer side as in this embodiment, the braking torque is shared by the torque receiving members 20a, 20b on the turn-in side and the turn-out side on the outer side. Therefore, the deformation of the support 3a can be suppressed more effectively. On the other hand, unlike the case of the present embodiment, a pulling anchor portion is provided only on the inner side of the inner and outer sides of the torque receiving members 20a and 20b, and the braking torque is rotated only on the inner side. When both the torque receiving members 20a and 20b on the outlet side are shared and supported, the action point of the force applied to each torque receiving member 20a and 20b from the inner side pad 10a and the inner side mounting member 19 are provided. Because the moment acting on the inner side is small and the moment acting on the inner side is small, the effect of sharing and supporting is small, and the effect of suppressing the displacement of the outer side portion of the support 3a is insufficient. is there. For this reason, it is difficult to effectively suppress the deformation of the support. In the case of the present embodiment, such inconvenience can be eliminated and deformation of the support 3a can be effectively suppressed.

  Furthermore, in the case of the present embodiment, the pad clip 40, 40 attached to each of the torque receiving members 20a, 20b in a state of covering each of the torque receiving members 20a, 20b causes the caliper 2a to be radially outward of the rotor 1 and 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. In addition, when the caliper 2a is assembled to the support 3a, the caliper 2a may be assembled while being pressed against the pad clips 40, 40 mounted on the support 3a against elasticity, and both ends of the rotor 3 of the support 3a in the circumferential direction. There is no need to take extra considerations such as placing the caliper 2a on the upper surface of the part to give the caliper 2a elastic outwardly in the radial direction, not holding it down, and holding it down by hand, like a hold spring. For this reason, the assembling property can be improved.

  In the case of the present embodiment, the torque receiving members 20a and 20b and the inner side mounting member 19 are caulked and fixed in a state where the projections 25 and 25 for insertion and the through holes 22 and 22 are engaged with each other. ing. Therefore, it is not necessary to use a fastening member such as a screw or a joining means such as welding, and the torque receiving members 20a and 20b and the inner side mounting member 19 can be coupled in a short time and at a low cost. .

  Further, the caulking work can be performed while a jig is abutted from the side where the pads 10a and 10b are arranged at the inner side ends of the torque receiving members 20a and 20b. In this case, of the torque receiving members 20a and 20b, the positioning accuracy of the surface that receives the braking torque from the pads 10a and 10b is secured, and the inner ends of the coupling arm portions 21 and 21 of the inner mounting member 19 are secured. The side surface can be brought into close contact with the outer surface of the inner side end of each torque receiving member 20a, 20b. That is, with the caulking work, the peripheral portions of the through holes 22 and 22 are deformed so as to expand at the distal ends of the connecting arm portions 21 and 21. On the other hand, if a jig is abutted against the surface on which the pads 10a and 10b of the torque receiving members 20a and 20b are disposed, the braking torque is received from the pads 10a and 10b of the torque receiving members 20a and 20b. Good surface positioning accuracy can be secured. In addition, the inner surface of the portion deformed so as to spread at the distal ends of the coupling arm portions 20a and 20b and the outer surface of the inner side end portion of each torque receiving member 20a and 20b are in close contact with each other so as to press against each other. Become. For this reason, at least a part of the braking torque applied to each pad 10a, 10b at the time of braking is not connected to the arm portions 24a, 24b and the insertion protrusions 25, 25 of the torque receiving members 20a, 20b. Is transmitted from the anchor portions 23a, 23b of the torque receiving members 20a, 20b to the inner side mounting member 19 via contact portions between the inner side surfaces of the tip portions of the portions 21, 21 and the outer surfaces of the torque receiving members 20a, 20b. It becomes like this. As a result, the load applied to the caulking portions 65, 65 of the insertion projections 25, 25 during braking can be reduced, and the durability of the support 3a can be improved.

  Next, FIGS. 16 to 19 show Example 2 of the present invention corresponding to claims 1 to 3 and 6. In the case of the present embodiment, the pull anchors provided on the outer side end (left end in FIGS. 16 to 19) also on the inner side end (right end in FIGS. 16 to 19) of the torque receiving members 20 a and 20 b. A pulling anchor portion 28a (not shown for the pulling anchor portion provided on the torque receiving member 20a) is provided, which is the same as the portion 28. For this reason, in the case of the present embodiment, the second portion 27a protruded downward from the inner side end of the first portions 26, 26 of the anchor portions 23a, 23b constituting the torque receiving members 20a, 20b, 27a is provided. And the pulling anchor part 28a of the L-shaped cross section which the front-end | tip part bent upwards is provided in the lower end part of these 2nd parts 27a and 27a, respectively. And the engagement protrusion part 39 provided in the both ends of the pressure plate 11 which comprises the inner side pad 10a is engageable with the front-end | tip part of each of these pull anchor parts 28a. Further, since the pull anchor portions 28a are provided on the inner sides of the torque receiving members 20a and 20b, the inner side mounting members are provided so that the pull anchor portions 28a can be disposed inside the inner side mounting members 19. Step portions 67 and 67 are provided on the inner side surfaces of the 19 connecting arm portions 21 and 21 near the base end. In a state where the torque receiving members 20a and 20b are coupled to both ends of the inner side mounting member 19, the lower surface of the inner pulling anchor portion 28a abuts against the upper surfaces of the stepped portions 67 and 67.

In the case of this embodiment, unlike the case of Embodiment 1 described above, the pull anchor portions 28a are also provided at the inner end portions of the torque receiving members 20a, 20b. , 20b, a recess 66 that is recessed so as to straddle the rotor 1 (see FIG. 2) is formed between the two pulling anchor portions 28a. For this reason, it becomes more difficult to form the torque receiving members 20a and 20b by forging than in the case of the first embodiment. However, in the case of the present embodiment, a part of the braking torque applied to the support 3a from the inner pad 10a can be received by the inner pulling anchor portion 28a. The braking torque received by the torque receiving member 20a (or 20b) on the side can be further dispersed, and the deformation of the support 3a can be suppressed smaller than in the case of the first embodiment. Even if the torque receiving members 20a and 20b cannot be formed by forging, the torque receiving members 20a and 20b are small parts, so that the work of forming each part by cutting is supported by a large integrated support. This can be performed more easily than when a part of each of them is cut to provide a pulling anchor portion.
During braking in which a relatively large braking torque is applied to the inner pad 10a, the braking torque is reduced by the inner pulling anchor portion 28a of the torque receiving member 20b (or 20a) on the rear side in the rotational direction of the rotor 1. The action of receiving a part is the same as the case of receiving a part of the braking torque by the outer pulling anchor portion 28 described in the first embodiment.
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.

  Next, FIG. 20 shows Embodiment 3 of the present invention corresponding to claims 1 to 6. In the case of this embodiment, unlike the case of each of the above-described embodiments, the turning-in side that is the rear side of the rotation direction of the rotor 1 (see FIG. 2, etc.) (the direction indicated by the arrow B in FIG. 20) when the vehicle moves forward A pull anchor portion 28 is provided only at the outer side end of the torque receiving member 20b. Pulling anchor portions are not provided at both inner and outer end portions of the torque receiving member 20a on the delivery side that is the front side in the rotational direction of the rotor 1 when the vehicle moves forward.

In the case of this embodiment, it is sufficient to provide only one pulling anchor portion 28 on the support 3a, and the torque receiving member 20a can be manufactured more easily. Unlike the case of the present embodiment, in the case where a pull anchor portion is provided in the support 3a on the unwinding side, which is the front side in the rotation direction of the rotor 1 when the vehicle moves forward, braking torque is applied by this pull anchor portion. If the vehicle is in charge, the frequency is reduced only when braking when the vehicle is moving backward, and the braking torque when moving backward is usually small. For this reason, as in this embodiment, when the vehicle moves forward, the effect of the absence of the pulling anchor portion on the delivery side of the support 3a is practically small.
Since other configurations and operations are the same as those of the first embodiment shown in FIGS. 1 to 15 described above, the same parts are denoted by the same reference numerals, and redundant description is omitted.

  Next, FIGS. 21 to 28 show a fourth embodiment of the present invention corresponding to claims 1 to 4 and 7. 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 is shown in detail in FIG. 25 on the lower side surfaces of both ends in the width direction (left and right directions in FIGS. 21, 24, 26 to 28, and up and down direction 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 the shape of a letter C, and then curves in a direction perpendicular to the length direction of the base portion 69 (downward in FIG. 25). . Further, both ends of each of the pressing portions 71 and 71 are spread in a letter C shape, and the tip portion is directed to the base 69 side (upper side in FIG. 25).

  Then, as shown in FIGS. 22 and 27, locking holes formed at both side positions (both positions in the left and right direction in FIG. 22) across the rotor 1 on the lower side surfaces of both ends of the caliper 2a in the width direction (up and down direction in FIG. 22). 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 (upward) and circumferentially of the rotor 1. Further, in the portion near the bottom plate portion 55 of the holding member 52 fitted to the protrusions 54 (see FIGS. 4, 5, 9, 11 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. For this reason, 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 processing surface for sliding contact of the elastic member is formed on the caliper 2a. There is no need to provide it, and the machining operation of finishing the machined surface with high accuracy becomes 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, the sliding contact portion with the upper surface and the inner side surface is linear, so that the area of the sliding contact portion 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 15 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 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 C 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 shows Example 2 of this invention in the state which locked a pair of pad to the support. 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 before mounting | wearing a support with a pad clip similarly. The perspective view which shows the state after mounting | wearing with a pad clip similarly to a support. The figure similar to FIG. 14 which shows Example 3 of this invention. The perspective view which abbreviate | omits a rotor and shows the disc brake of the Example 4. FIG. 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 4. 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. 29 from the downward direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotor 2, 2a Caliper 3, 3a Support 4 Mounting hole 5 Guide pin 6 Guide hole 7 Bellows 8 Turning-in side engaging part 9 Out-side engaging part 10a, 10b Pad 11 Pressure plate 12 Cylinder part 13 Claw part 14 Piston DESCRIPTION OF SYMBOLS 15 Lining 16 Bolt 17 Bridge part 18 Reinforcement part 19 Inner side attachment member 20a, 20b Torque receiving member 21 Coupling arm part 22 Through-hole 23a, 23b Anchor part 24a, 24b Arm part 25 Insertion protrusion 26 First part 27, 27a Second part 28, 28a Pull anchor part 29 Locking protrusion 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 Second step portion 38 Second concave groove 39 Engaging protrusion 40, 40a Pad clip 41 Elastic portion for pressing 42 First inner wall 44 Third inner wall surface 46 Leg portion 47 Pressing 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 66 Recessed portion 67 Step portion 68 Pressing spring 69 Base portion 70 Leg portion 71 Pressing portion 72 Locking hole 73 Step portion 74 Bending piece

Claims (7)

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 comprises an inner side mounting member disposed at a position deviating from the rotor to the inner side, and a pair of torque receiving members coupled to both ends of the inner side mounting member in the circumferential direction of the rotor, At least one torque receiving member of the pair of torque receiving members is provided with a pull anchor portion that is bent in the radial direction of the rotor at the tip portion thereof, and the rotor of the rotor that is the inner side surface of the tip portion of the pull anchor portion is provided. A floating caliper type disc brake characterized in that a circumferential side surface and an engaging portion provided at one end of at least one of the pads are opposed to each other in the circumferential direction of the rotor.   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. Item 3. A floating caliper disc brake according to item 1.   Among the pair of torque receiving members, an anchor portion having a pulling anchor portion is provided at at least one end portion of at least one of the lengthwise end portions of the torque receiving member, and the anchor portions face each other in the radial direction of the rotor. A concave groove having two inner wall surfaces and two inner wall surfaces facing each other in the circumferential direction of the rotor is provided, and the groove provided on one end portion of the pressure plate constituting one of the pads. The floating caliper type disc brake according to claim 1 or 2, wherein the mating portion can be engaged.   The floating caliper disc brake according to any one of claims 1 to 3, wherein the pull anchor portion is provided only on the outer side of the rotor of at least one of the torque receiving members.   The pull anchor portion is provided only on the outer side with respect to the rotor of the torque receiving member which is the rear side in the rotational direction of the rotor when the vehicle moves forward among the torque receiving members. The floating caliper type disc brake described in any one of the items.   The floating caliper type disc brake according to any one of claims 1 to 5, wherein the pad clip attached to the torque receiving member gives the caliper elasticity 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 type disc brake according to any one of claims 1 to 6, wherein each of the elastic members gives elasticity to the caliper in a radially outer side and a circumferential direction of the rotor.

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