JP2009002374A - Floating caliper type disc brake - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide inexpensively a structure having a simply shaped caliper side pad clip 19 disposed between an outer side pad 5a and a caliper claw 7d to prevent looseness of a caliper 3c, and integrally handling the pad 5a and the caliper side pad clip 19. <P>SOLUTION: The caliper side pad clip 19 is the only member for preventing the looseness of the caliper 3c. The caliper side pad clip 19 comprises: a base part 33 fixed to an outer face of a pressure plate 9 of the pad 5a; and extension parts 34, 34 extended from the base part 33. To prevent the looseness of the caliper 3c, a portion from middle parts to tip parts of the extension parts 34, 34 are engaged without looseness with respect to a radial direction of a rotor in recess parts 39, 39 formed to the outer face of the caliper claw 7d over a circumferential direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an improvement of a floating caliper type disc brake used for braking an automobile. In particular, the present invention realizes a structure in which the shape of the clip provided between the outer pad and the caliper claw is simple in order to prevent the caliper from rattling, and the pad and the clip can be handled integrally. It is intended to be inexpensive.

  As a floating caliper type disc brake for braking an automobile, there are conventionally known various types of structures as described in Patent Documents 1 to 3 and the like. 12-13 has shown the structure described in patent document 1 among these. First, the basic structure and operation of the floating caliper type disc brake will be briefly described with reference to the structures shown in FIGS. This floating caliper type disc brake is configured such that a caliper 3 is attached to a support 2 provided in a state straddling a portion near the outer diameter of a rotor 1 that rotates with a wheel (not shown) by a pair of guide pins 4, 4. It supports the displacement in the axial direction. Further, both ends of the outer side and inner side pads 5 a and 5 b are supported on the support 2 so as to be displaceable in the axial direction of the rotor 1. In addition, the caliper 3 having the cylinder portion 6 and the caliper claw 7 is disposed so as to straddle both the pads 5a and 5b, and the inner side (lower side in FIG. The piston 8 which presses 5b with respect to the said rotor 1 is incorporated.

  When braking is performed, pressure oil is fed into the cylinder portion 6, and the inner pad 5 b is pressed against the inner surface of the rotor 1 from the bottom of FIG. Then, as a reaction of this pressing force, the caliper 3 is displaced downward in FIG. 12, and the caliper claw 7 presses the outer side (upper side in FIG. 12) pad 5 a 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 floating caliper type disc brake as described above, there is a possibility that the caliper 3 may rattle due to vibration during traveling in a state where the disc brake is incorporated in the vehicle. In particular, the caliper claw 7 side of the caliper 3 away from the connecting portion with the support 2 is likely to vibrate in the radial direction of the rotor 1 (vertical direction in FIG. 13) with respect to the support 2. Then, there is a possibility that abnormal noise is generated by such vibration of the caliper 3. In view of such circumstances, for example, as in the structures described in Patent Documents 2 and 3, it has been conventionally performed to provide a clip or the like between the caliper claw and the outer pad. 14 to 16 show three examples of the structure described in Patent Document 2 among them.

  First, the first example of the conventional structure shown in FIG. 14 for preventing caliper rattling is supported in a state in which the caliper pawl 7a and the support 2 are prevented from rattling in the radial direction. The pressure plate 9 of the outer pad 5 a is coupled by a coupling member 10. That is, the coupling member 10 is arranged so as to straddle a part of the caliper claw 7 a, and both end portions of the coupling member 10 are fixed to the pressure plate 9. A concave portion 11 is formed in the outer surface of the caliper claw 7a in the circumferential direction of the rotor 1 (see FIGS. 12 and 13), and an intermediate portion of the coupling member 10 is formed in the concave portion 11. Is arranged. Further, the convex portion 12 provided in the intermediate portion of the coupling member 10 is brought into contact with the bottom surface of the concave portion 11. As a result, the caliper claw 7a side of the caliper 3a is supported with the support 2 being prevented from shaking in the radial direction with respect to the support 2 via the coupling member 10 and the pressure plate 9, and the caliper claw 7a. Vibration can be less likely to occur on the side. Further, as in the second example shown in FIG. 15, if the convex portion 12a provided in the intermediate portion of the coupling member 10a is fitted into the through hole 13 formed in a part of the caliper claw 7a without looseness, This caliper claw 7 a side can be effectively prevented from vibrating in the radial direction of the rotor 1.

  However, in the case of the structure shown in FIGS. 14 and 15, the operation of placing the coupling members 10 and 10a between the caliper claw 7a and the outer pad 5a is performed by assembling the caliper 3a and the outer pad 5a. It is necessary to do it afterwards. When the coupling members 10 and 10a are further assembled after the caliper 3a and the pad 5a are assembled in this manner, it is necessary to manage the pads 5a and the coupling members 10 and 10a separately, which is not preferable in terms of component management. On the other hand, in the case of the third example shown in FIG. 16, the pad 5a and the caliper 3a can be assembled in a state where the coupling members 10b and 10b are fixed to the pressure plate 9 of the pad 5a on the outer side in advance. .

  That is, the base end portions of the coupling members 10b and 10b are fixed to the pressure plate 9 in advance, and the distal end portions of the coupling members 10b and 10b are axially outward (see FIGS. 12 and 13). It is elastically deformed to the front side in FIG. 16 on the side that is the outer side in the width direction in the assembled state to the vehicle, and the distance between the front ends of these coupling members 10b and 10b and the outer surface of the pressure plate 9 is increased. In this state, a part of the caliper claw 7b is caused to enter between the front ends of the coupling members 10b and 10b and the outer surface of the pressure plate 9, and the front ends of the coupling members 10b and 10b are inserted into the caliper claw. 7b is elastically brought into contact with a part of the outer surface. In such a configuration, the outer side pad 5a and the coupling members 10b and 10b can be handled as one body, which is advantageous in managing parts.

  However, in the case of the structure shown in FIG. 16, the caliper claw 7b cannot be sufficiently prevented from vibrating by only engaging the coupling members 10b and 10b with a part of the caliper claw 7b. And the pressure plate 9 are coupled by screws 14. Therefore, since it is necessary to screw the screw 14 after assembling the caliper 3a and the pad 5a, the number of parts increases and the cost increases.

  On the other hand, FIGS. 17 to 18 show a fourth example of the conventional structure for preventing the caliper from rattling with the structure described in Patent Document 3. FIG. In the case of this structure, the clip 15 fixed to the pressure plate 9 of the outer pad 5a is engaged with a part of the caliper claw 7c. For this purpose, the clip 15 is provided with elastic pieces 17a and 17b provided on the substrate portion 16 and both ends of the substrate portion 16 in the circumferential direction of the rotor 1 and on the outer end portion in the radial direction of the rotor 1, respectively. It consists of. And the said board | substrate part 16 is fixed to the said pressure plate 9, The elastic pieces 17a and 17a provided in the circumferential direction both ends of this board | substrate part 16 among each said elastic pieces 17a and 17b are attached to the said caliper nail | claw 7c. The elastic pieces 17b provided at the outer ends in the radial direction of the base plate portion 17 are respectively elastically brought into contact with the outer side surfaces, and are recessed outward in the radial direction formed at the circumferential center portion of the caliper claw 7c. It is elastically brought into contact with the inner surface of the recessed portion 18 to be inserted.

  In the case of the structure shown in FIGS. 17 to 18 described above, it is considered that the caliper claw 7c side of the caliper 3b can be prevented to a certain extent. That is, the caliper claw 7c is sandwiched between the pressure plate 9 of the outer pad 5a and the elastic pieces 17a and 17a, and the elastic piece 17b is formed at the center of the caliper claw 7c. It is considered that the caliper claw 7c is less likely to vibrate due to the elastic contact with the recessed portion 18 that has been made. Further, the pad 5a and the caliper 3b can be assembled with the clip 15 fixed to the pressure plate 9 of the pad 5a. Further, in order to prevent the caliper claw 7c from vibrating, the clip 15 is the only member provided between the caliper claw 7c and the pressure plate 9. That is, unlike the structure shown in FIG. 16 described above, it is not necessary to provide the screws 14 other than the coupling members 10b and 10b.

  However, in the case of the structure shown in FIGS. 17 to 18, the caliper claw 7 c is not sufficiently prevented from being displaced radially outward with respect to the pressure plate 9. For this reason, it is impossible to sufficiently prevent the caliper claw 7c from vibrating. Further, the clip 15 is provided with elastic pieces 17a and 17b at three locations on the substrate portion 16, and the shape thereof is complicated. For this reason, the manufacturing cost of this clip 15 may become high. That is, the clip 15 extends the elastic pieces 17a and 17b from the base plate portion 16 in three directions. Such a clip 15 is made by, for example, bending a base plate obtained by punching a metal plate. In the case of the clip 15, the shape becomes complicated even in the state of the base plate. Therefore, for example, the cost of the tool increases because the shape of the tool for processing the base plate becomes complicated, the tool life is shortened early, and the frequency of tool replacement increases. Further, the yield of the elastic metal plate as the material is deteriorated because the shape of the base plate is complicated. As described above, in the case of the structure shown in FIGS. 17 to 18, the manufacturing cost of the floating caliper disc brake increases.

  In addition to the coupling members 10, 10 a, 10 b and the clip 15 as shown in FIGS. 14 to 18 described above, for example, a coil spring formed by bending a metal wire is used as an outer pad. Conventionally, a structure provided between the caliper claw and the caliper claw is also known. Even when such a coil spring is used, it is inevitable that the shape of the coil spring is complicated, and the manufacturing cost increases.

  Furthermore, a structure that prevents vibration of the caliper claw by pressing a pin into a hole provided on the inner surface of the caliper claw and fitting this pin into a hole provided in the pressure plate of the outer pad is also conventionally known. Are known. However, in this structure, it is troublesome to form a hole for press-fitting the pin into the inner side surface of the caliper claw, and it is difficult to assemble the pin, and the cost is inevitably increased. .

JP 55-123029 A JP 2001-193769 A JP 2000-104764 A

  In the present invention, in view of the circumstances as described above, the shape of the clip provided between the outer pad and the caliper claw is simple in order to prevent the caliper from rattling, and these pad and clip are integrated. It was invented to realize a structure that can be handled at low cost.

The floating caliper type disc brake of the present invention includes, for example, a support, a pair of pads on the outer side and the inner side, a caliper, a caliper claw, and a clip, as in the structure shown in FIG. Prepare.
Of these, the support is fixed to the vehicle body adjacent to the rotor rotating with the wheels.
The two pads are arranged on both sides of the rotor in a state where the pads are supported by the support so as to be capable of displacement in the axial direction of the rotor.
The caliper is supported by a part of the support so as to be displaceable in the axial direction of the rotor.
Further, the caliper pawl is provided at an outer side end portion of the caliper. For example, the caliper claw is provided with a recessed portion that is recessed outward in the radial direction of the rotor at the center portion in the circumferential direction of the rotor. Split type.
Further, the outer side pad is supported with respect to the support in a state in which rattling in the radial direction of the rotor is prevented.
Further, the clip is fixed to the outer surface of the pressure plate constituting the outer side pad.
Then, by engaging a part of the clip with a part of the caliper claw, the caliper is prevented from rattling.

In particular, in the floating caliper type disc brake of the present invention, the only member provided between the caliper pawl and the pressure plate in order to prevent the caliper from rattling is the clip.
In addition, the clip has a base plate portion fixed to the outer surface of the pressure plate, and a circumferential end portion of the rotor portion of the base plate portion at a portion away from the base plate portion in the circumferential direction. It extends in a direction away from the pressure plate, and includes an extended portion with the tip portion as a free end. The extending portion is elastically bendable in the axial direction with respect to the substrate portion.
Then, in a state where the caliper pawl is disposed between the outer surface of the pressure plate and the extension portion, the intermediate portion or the tip portion of the extension portion is placed in a circumferential direction on the outer surface of the caliper pawl. In the recessed portion formed in this manner, the rotor is engaged without rattling in the radial direction of the rotor.

When the caliper claw is a split type as described above, the clip has an extending portion at both ends in the circumferential direction of the substrate portion, and the substrate portion is disposed in the recessed portion. In this state, each extending portion is engaged with a recess provided in the caliper claw.
In the present specification and claims, the terms “axial direction”, “circumferential direction”, and “radial direction” are referred to as “axial direction of the rotor” and “circumferential direction of the rotor” unless otherwise specified. ”And“ the radial direction of the rotor ”.

When the present invention as described above is carried out, preferably, as described in claim 2, the intermediate portion or the tip portion of the extending portion includes a bottom plate portion, and both radial end portions of the rotor of the bottom plate portion. And a pair of bent portions formed by bending outward in the axial direction.
Then, in a state in which the intermediate portion or the tip portion of the extending portion is engaged with the recess, both the bent portions are elastically brought into contact with both radial side surfaces of the rotor of the recess.

  According to the present invention configured as described above, since the extended portion of the clip is engaged with the recess formed on the outer surface of the caliper claw without rattling in the radial direction, the caliper claw is in the radial direction. It can be prevented from vibrating. Moreover, in the case of this invention, the said clip consists of a board | substrate part and the extension part extended from the circumferential direction edge part of this board | substrate part, For example, compared with the clip shown to above-mentioned FIGS. It is a simple structure. Therefore, the cost of the tool for processing the base plate before bending the clip does not increase, and the yield of a metal plate, for example, which becomes a material does not deteriorate.

Further, since the distal end portion of the extension portion constituting the clip is a free end, the extension portion is elastically deformed while the clip is fixed to the pressure plate of the pad on the outer side, The caliper claw can be allowed to enter between the extension part. Therefore, the caliper and the pad can be easily assembled with the clip fixed to the pad. As a result, these pads and clips can be handled as a unit, which is advantageous in terms of component management.
In the case of the present invention, the shape of the clip provided between the outer pad and the caliper claw in order to prevent the caliper from rattling is simple, and the pad and the clip can be handled as a unit. The structure can be realized at low cost.

  According to the second aspect of the present invention, both the bent portions are elastically contacted with both side surfaces in the radial direction of the concave portion, and the rigidity of the extending portion is improved by the presence of the both bent portions, so that the more stable. Therefore, anti-shock performance can be obtained.

[First example of embodiment]
1 to 9 show a first example of an embodiment of the present invention. As shown in FIGS. 1 to 3, the floating caliper type disc brake of this example includes a support 2 a, a pair of pads 5 a on the outer side and an inner side, a caliper 3 c, a caliper claw 7 d, and claims. The caliper side pad clip 19 is a clip described in (1).

  First, the support 2a is integrally formed by bending a thick steel plate with a press to ensure sufficient strength and rigidity, and is adjacent to the rotor 1 (FIG. 2) that rotates together with the wheels. Fixed to the vehicle body (knuckle of suspension system). The support 2a used in this example includes a base portion 20, a pair of straddling portions 21 and 21, and locking portions 22 and 22. Of these, the base 20 has a flat plate shape, and a holding notch 23 is formed at the center in the circumferential direction of the rotor 1 (the left-right direction in FIGS. 1, 2, 7, and 9). It is formed in an open state. Although not shown in the figure, a pressure plate constituting an inner side pad is attached to the holding notch portion 23 via the support side pad clip for preventing rattling (see FIG. 1 and 7 in the front and back direction, the up and down direction in FIGS. 2 and 9, and the left and right direction in FIGS. Further, mounting holes 24 and 24 for inserting or screwing bolts for fixing the support 2a to the knuckle are formed in a portion closer to the inner diameter of the base portion 20.

  Further, the straddling portions 21, 21 are both ends of the base portion 20 in the circumferential direction, and the rotor 1 from a position sandwiching the holding notch portion 23 from both sides (from the base end side toward the front end side). The outer peripheral edge portion is bent so as to straddle from the inner side to the outer side. And the base end part of the said latching | locking parts 22 and 22 is made to continue to the front-end | tip part of the said both straddling parts 21 and 21. As shown in FIG. Both the locking portions 22 and 22 are bent in a direction approaching each other from the front end portions of the straddling portions 21 and 21, and both end portions of the pressure plate 9 constituting the outer side pad 5a are provided at the respective front end portions. 5, respectively, through the support side pad clips 25, 25 for preventing rattling as shown in FIG. 5, and the pad 5 a can be displaced in the radial direction of the rotor 1 (FIGS. 1, 3, 7 and 8 are held in a state where rattling is prevented.

  That is, the front end portions of both the locking portions 22 and 22 are caused to enter the recesses formed at both end portions of the pressure plate 9, and between the front end portions of the both locking portions 22 and 22 and the both concave portions. The support-side pad clips 25, 25 are disposed on the side. In this state, the pressure plate 9 is held in the portion between the both locking portions 22, 22 without rattling in the radial direction with respect to the both locking projections 22, 22. Further, both the outer side and inner side pads 5a and 5b (see FIG. 12) are arranged on both sides of the rotor 1 with the respective friction materials 26 (linings) facing the side surfaces of the rotor 1. .

  The caliper 3c is supported by a pair of guide pins 27, 27 that are part of the support 2a and located radially inward of the outer peripheral edge of the rotor 1, and can be displaced in the axial direction. These guide pins 27, 27 are screw holes in which male screw portions 28 formed at respective base end portions are formed at positions where the holding notch portions 23 are sandwiched from both sides at the radial intermediate portion of the base portion 20 of the support 2a. By being engaged with 29 and 29, the base 20 is fixedly coupled. A locking hole 30 for engaging the tip of the hexagon wrench is formed on the tip surfaces of the guide pins 27, 27 so that the guide pins 27, 27 can be rotated with a large torque. I have to. In the assembled state of the floating caliper type disc brake, both the guide pins 27 and 27 can be displaced in the axial direction within the guide cylinder portions 31 and 31 provided at both ends of the caliper 3c in the circumferential direction. Inserted in. As a result, as described above, the caliper 3c is supported by the support 2a so as to be displaceable in the axial direction of the rotor.

  The caliper claw 7d is provided at the outer side end of the caliper 3c supported by the support 2a as described above. The caliper claw 7d is a split type (bifurcated) and has a recessed portion 32 that is recessed radially outward at the center. Further, a cylinder portion 6a is provided on the inner side of the caliper 3c, and a piston is oil-tightly fitted in the cylinder portion 6a. Then, by pushing out the piston based on the introduction of hydraulic pressure into the cylinder portion 6a, the inner pad 5b is pressed against the inner surface of the rotor, and the caliper pawl 7d pushes the outer pad 5a. It is pressed against the outer surface of the rotor for braking.

  The caliper side pad clip 19 is provided between the caliper claw 7d and the pressure plate 9 of the outer side pad 5a. The caliper 3c is prevented from rattling. In the case of this example, the caliper side pad clip 19 is the only member provided between the caliper pawl 7d and the pressure plate 9 to prevent this rattling. Such a caliper-side pad clip 19 is an integral leaf spring formed by bending a corrosion-resistant elastic metal plate such as a stainless steel spring steel plate, and as shown in FIG. At the both ends in the circumferential direction of the substrate part 33, the further away from the substrate part 33 in the circumferential direction, the longer the direction away from the pressure plate 9 in the axial direction {the left side in FIG. 4B}, respectively. It consists of a pair of extension parts 34 and 34 which made the front-end | tip part of this free end.

  That is, the base end portions of both the extended portions 34, 34 are bent in a direction inclined outward in the axial direction with respect to the substrate portion 33 as the distance from the substrate portion 33 increases, and the width in the radial direction is increased. It is formed to be narrow. Further, the intermediate portion or the distal end portion of both the extending portions 34, 34 are provided in a direction away from the base plate portion 33 with respect to the base end portion, and a bottom plate portion 35 and both radial end portions of the bottom plate portion 35. Is formed of a pair of bent portions 36, 36 formed by bending outward in the axial direction. That is, the cross section when the intermediate part or the tip part of both the extension parts 34, 34 is cut in the radial direction is substantially U-shaped. Further, in the free state of the caliper side pad clip 19, the bent portions 36, 36 slightly increase in the direction in which the distance between the radially opposed bent portions 36, 36 increases toward the outer side in the axial direction. It is inclined. Further, since both of the extending portions 34 and 34 have free ends at their distal ends, they can be elastically bent in the axial direction with respect to the substrate portion 33. In addition, the chain line in the caliper side pad clip 19 of each figure is a bending position.

  The caliper side pad clip 19 configured as described above is fixed to the outer surface of the pressure plate 9 of the outer side pad 5a, as shown in FIG. That is, the non-circular convex portion 38 formed on the outer surface of the pressure plate 9 is inserted into the non-circular mounting hole 37 formed in the central portion of the substrate portion 33 constituting the caliper side pad clip 19 without rattling. In this state, a portion protruding from the outer surface of the substrate portion 33 at the tip of the convex portion 38 is caulked to the outer surface of the substrate portion 33, and the caliper side pad clip 19 is supported and fixed to the pressure plate 9. To do. The caliper-side pad clip 19 and the pressure plate 9 may be coupled to each other by screw coupling.

  Further, the caliper claw 7d is disposed between the outer surface of the pressure plate 9 and the extended portions 34, 34 of the caliper side pad clip 19. Then, in the recesses 39, 39 formed on the outer side surface of the caliper claw 7d in the circumferential direction, the intermediate part or the tip part of the two extension parts 34, 34 are respectively related to the radial direction of the rotor 1. It is approaching without rattling. That is, both the concave portions 39 and 39 are formed so that the cross-sectional shape when cut in the radial direction is a U-shape, and the both side surfaces 40 and 40 in the radial direction are substantially parallel to each other. Further, the distance between the both side surfaces 40, 40 (the width in the radial direction of the concave portions 39, 39) is, among the bent portions 36, 36 constituting both the extended portions 34, 34 of the caliper side pad clip 19, described above. The distance between the proximal end portions of the bent portions 36 and 36 facing in the radial direction is substantially the same as or slightly larger than the distance between the distal end portions of the bent portions 36 and 36 in the free state.

  When the caliper claw 7d and the caliper side pad clip 19 are assembled as described above, the base plate portion 33 and the base end portions of the two extending portions 34, 34 of the caliper side pad clip 19 are connected to the pressure plate 9. The caliper claw 7d is disposed in the recessed portion 32 in a fixed state. Then, the intermediate part or the tip part of the two extension parts 34, 34 existing outward in the axial direction from the substrate part 33 are engaged with the two concave parts 39, 39 formed on the outer surface of the caliper claw 7d. Let In this manner, in a state where the intermediate part or the tip part of the two extending parts 34, 34 are engaged with the two recessed parts 39, 39, the bent parts 36, 36 are arranged on both sides in the radial direction of the two recessed parts 39, 39. The surfaces 40 and 40 are in elastic contact with each other. As a result, the pressure plate 9 and the caliper claw 7d are coupled via the caliper-side pad clip 19 in a state in which shakiness in the radial direction is prevented. In the case of this example, the bottom plate portions 35 of both the extending portions 34, 34 are also elastically brought into contact with the bottom surfaces of the both concave portions 39, 39. This prevents the caliper claw 7d and the outer pad 5a from separating in the axial direction regardless of the displacement of the caliper 3c during braking and when releasing the brake.

  As described above, in order to arrange the caliper claw 7d between the outer side surface of the pressure plate 9 and the inner side surfaces of the extension portions 34, 34, the intermediate portion or the tip of the extension portions 34, 34 are provided. Part is elastically bent outward in the axial direction with respect to the base plate part 33, and the distance between the inner side surface of the extension part 34, 34 or the inner side surface of the tip part and the outer side surface of the pressure plate 9 is increased. . In this state, the caliper claw 7d enters between these two side surfaces. And if the said elastic force is cancelled | released in the state which both the said recessed parts 39 and 39 formed in the outer surface of this caliper nail | claw 7d and the said both extended parts 34 and 34 matched, these both extended parts 34, An intermediate portion or a tip portion of 34 engages with the concave portions 39 and 39. As shown in FIG. 8, if the outer surface of the tip of the caliper claw 7d (the lower end of FIGS. 1, 3, 7, and 8) is inclined in a direction in which the thickness decreases toward the tip, this inclination The surface becomes a guide surface, and the concave portion 39 of the caliper claw 7d and the intermediate portion or the tip portion of the extending portion 34 can be more easily engaged.

  As described above, according to the present example, the middle part or the tip part of the two extension parts 34, 34 of the caliper side pad clip 19 are related to the radial direction in the recesses 39, 39 formed on the outer surface of the caliper claw 7d. Since they are engaged without rattling, it is possible to prevent the caliper claw 7d from vibrating in the radial direction. That is, the caliper side pad clip 19 is fixed to the pressure plate 9 of the outer side pad 5a. The outer pad 5a is supported in a state in which the radial backlash is prevented with respect to the support 2a. Accordingly, the caliper claw 7d is supported in a state in which radial wobbling is prevented with respect to the support 2a via the caliper side pad clip 19 and the pad 5a. Further, in the case of this example, the bent portions 36, 36 formed at the intermediate portion or the tip portion of the extended portions 34, 34 are elastically applied to the both side surfaces 40, 40 in the radial direction of the concave portions 39, 39. In addition to the abutment, the bending rigidity of the extended portions 34, 34 is improved by the presence of the bent portions 36, 36, so that more stable rattling prevention performance can be obtained.

  In the case of this example, the caliper-side pad clip 19 includes a substrate portion 33 and both extending portions 34 and 34 extending from both ends of the substrate portion 33 in the circumferential direction. Therefore, even if it is in the state of the base plate before the caliper side pad clip 19, the shape does not become complicated (it becomes a substantially rectangular shape). For this reason, it is possible to prevent the shape of the tool for forming the base plate from becoming complicated, reduce the tool life, reduce the frequency of tool replacement, and increase the cost. Further, since the shape of the base plate is simple, the yield of the metal plate as a material can be improved.

  Further, since the distal ends of the extended portions 34, 34 constituting the caliper side pad clip 19 are free ends, the caliper side pad clip 19 is connected to the outer side pad 5a engaged with the support 2a. In a state of being fixed to the pressure plate 9 (the state shown in FIG. 9), the caliper claw 7d is placed between the pad 5a and the extension portions 34, 34 while elastically deforming the extension portions 34, 34. You can enter. Therefore, the caliper 3c and the pad 5a can be easily assembled with the caliper side pad clip 19 fixed to the pad 5a. As a result, the pad 5a and the caliper side pad clip 19 can be handled as a unit, which is advantageous in terms of component management.

  Furthermore, in the case of this example, the caliper 3c can be more effectively prevented from rattling. That is, in the case of the first to third examples of the conventional structure shown in FIGS. 14 to 16, the coupling members 10, 10a, and 10b are arranged at the center of the caliper pawls 7a and 7b in the width direction (left and right direction in FIGS. 14 and 16). Because of this, rattling of the caliper 3a is likely to occur around this engaging portion. On the other hand, in the case of this example, the extended portions 34, 34 of the caliper side pad clip 19 are respectively engaged with both sides of the caliper claw 7d formed in the fork in the width direction (left and right direction in FIGS. 1 and 2). Therefore, it is possible to prevent the caliper 3c from rattling as in the conventional structure shown in FIGS.

[Second Example of Embodiment]
10 to 11 show a second example of the embodiment of the present invention. In the case of this example, the shape of both extended portions 34a of the caliper side pad clip 19a is substantially semicircular in cross section. That is, both ends of the extending portions 34a in the radial direction are bent and bent so that the whole is curved. Further, in accordance with the shape of both the extended portions 34a, the shape of both concave portions 39a formed on the outer surface of the caliper claw 7e is also substantially semi-cylindrical as shown in FIG. In a state where the caliper side pad clip 19a and the caliper pawl 7e are combined, the outer peripheral surfaces of the two extending portions 34a and the inner peripheral surfaces of the two concave portions 39a are elastically contacted at two positions in the radial direction. . Other structures and operations are the same as those of the first example of the above-described embodiment.

  In each example of the above-described embodiment, the present invention has been described for a case where the present invention is applied to a floating caliper type disc brake called a so-called reverse pin type in which guide pins are arranged radially inward from the outer peripheral edge of the rotor. . However, the present invention is also applicable to floating caliper type disc brakes having other structures, such as a structure in which guide pins are positioned radially outward of the rotor as shown in FIGS. is there.

The front view which looked at the 1st example of an embodiment of the invention from the outer side. The figure which abbreviate | omitted the pad and the caliper side pad clip, and was seen from the upper side of FIG. The figure which abbreviate | omits and shows the II cross section of FIG. Only the caliper side pad clip is shown, (A) is a front view, (B) is a roll sectional view of (A). The support side pad clip is taken out and shown, (A) is a front view, (B) is a view seen from the right side of (A). The state which assembled | attached the caliper side pad clip to the pad is shown, (A) is a front view, (B) is a ha sectional drawing of (A). The enlarged front view which shows the state which assembled | attached the pad which assembled | attached both the caliper side and the support side pad clips to the caliper. The figure equivalent to the II cross section of FIG. 1 which shows the state which assembled | attached the pad which assembled | attached the caliper side pad clip to another example of a caliper. The figure which assembled | attached the pad which assembled | attached the caliper side pad clip to the support, and looked at the half part from the radial direction outer side. The 2nd example of an embodiment of the invention is shown, (A) is a fragmentary perspective view of a caliper side pad clip, and (B) is the end elevation. The partial perspective view of a caliper nail | claw similarly. The partial cut top view which shows one example of the floating caliper type disc brake conventionally known in the state seen from the outer diameter side. FIG. 13 is a knee cross-sectional view of FIG. 12. The front view which shows the 1st example of the conventional structure for aiming at rattling prevention of a caliper in the state seen from the outer side. The figure equivalent to the ho-ho cross section of FIG. 14 which shows a 2nd example similarly. Similarly, the front view which shows the 3rd example in the state seen from the outer side. Similarly, the front view which shows the 4th example in the state seen from the outer side. The perspective view of the clip integrated in the structure of the 4th example.

Explanation of symbols

1 Rotor 2, 2a Support 3, 3a, 3b, 3c Caliper 4 Guide pin 5a, 5b Pad 6, 6a Cylinder part 7, 7a, 7b, 7c, 7d, 7e Caliper claw 8 Piston 9 Pressure plate 10, 10a, 10b Coupling Member 11 Concave part 12 and 12a Convex part 13 Through-hole 14 Screw 15 Clip 16 Substrate part 17a and 17b Elastic piece 18 Concave part 19 and 19a Caliper side pad clip 20 Base part 21 Stretching part 22 Locking part 23 Holding notch part 24 Mounting hole 25 Support side pad clip 26 Friction material 27 Guide pin 28 Male thread part 29 Screw hole 30 Locking hole 31 Guide cylinder part 32 Recessed part 33 Substrate part 34, 34a Extending part 35 Bottom plate part 36 Bending part 37 Mounting hole 38 Protruding part 39 , 39a Recess 40 Side

Claims (2)

  A support fixed to the vehicle body adjacent to the rotor rotating with the wheel, and an outer side and an inner side disposed on both sides of the rotor while being supported by the support so as to be capable of axial displacement of the rotor; A pair of pads, a caliper supported so as to be displaceable in the axial direction of the rotor, a caliper claw provided at an outer side end portion of the caliper, and the outer side pad. A clip fixed to the outer surface of the pressure plate, and the outer pad is supported against the support in a state in which rattling in the radial direction of the rotor is prevented, and a part of the clip This caliper type disc brake prevents the caliper from rattling by engaging the caliper with a part of the caliper claw. A member provided between the caliper pawl and the pressure plate to prevent rattling of the pawl is only the clip, and the clip includes a substrate portion fixed to the outer surface of the pressure plate, At the circumferential end of the rotor of the substrate portion, the portion extending away from the substrate portion with respect to the circumferential direction, extending in a direction away from the pressure plate with respect to the axial direction, and having the tip portion as a free end In the state where the caliper claw is disposed between the outer surface of the pressure plate and the extension portion, the intermediate portion or the tip portion of the extension portion is circumferentially disposed on the outer surface of the caliper claw. A floating caliper type disc brake characterized in that it is engaged in a recess formed over the above without rattling in the radial direction of the rotor.   An intermediate portion or a tip portion of the extension portion includes a bottom plate portion and a pair of bent portions formed by bending both ends of the rotor in the radial direction of the bottom plate in the axial direction outwardly, and the extension portion The both bent portions are respectively elastically brought into contact with both side surfaces of the rotor in the radial direction of the rotor in a state in which the intermediate portion or the tip portion of the rotor is engaged with the recess. Floating caliper type disc brake.

Images