JPH0725341U - Disc brake pad liner - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a pad liner for a disc brake that allows smooth introduction of a friction pad and has excellent workability. [Structure] A liner portion 31 that can be attached to the arm portion 12 of the torque receiving member 10 is provided, and the ends of the sliding surfaces 32 to 34 that form the liner portion 31 extend in the rotor axial direction, and the tip is inside. The guide claw 38 having the inclined portion 39 extending over at least two surfaces is formed by being inclined.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pad liner for a disc brake which is interposed between an arm portion of a torque receiving member and a friction pad.

[0002]

[Prior art]

 5 to 7 show a prerequisite technique of the present invention, FIG. 5 shows a plan view of a disc brake, and FIG. 6 shows a front view thereof. The disc brake includes a carrier 10 that is fixed to a non-rotating member of the vehicle by straddling a rotor (not shown) that rotates integrally with the wheels, and a caliper 20 is mounted on the carrier 10 via a pair of guide pins 11 and 11. Are supported slidably in the rotor axial direction, and a pair of friction pads 40, 40 disposed inside the caliper 20 so as to face each other allow the arm portion of the carrier 10 to slide in the rotor axial direction. It is mounted between 12 and 12.

In this type of disc brake, thin steel plates are attached to the arms 12, 12 of the carrier 10 on which the friction pads 40, 40 slide in order to reduce the sliding resistance of the friction pads 40, 40. Bend-formed pad liners 30, 30 are mounted. The pad liner 30 shown in FIG. 7 was previously proposed by the applicant as Japanese Patent Application No. 4-45158, and is provided with a pair of liner portions 31 and 31, and each liner portion 31 and 31 is a carrier 10. It is attached to the engaging protrusions 13 and 13 formed on the respective arm portions 12 and 12. Each liner portion 31 has three sliding surfaces 32 to 34 that are bent in a substantially U-shape, and guide claws 32a to 34a that are formed by bending an inwardly extending piece extending outward from each sliding surface 32 to 34. Composed of and. These independent guide claws 32a to 34a facilitate the introduction of the friction pad 40. In FIG. 6, reference numeral 50 is a retract spring having a substantially W shape for preventing the friction pads 40, 40 from being dragged during non-braking. The friction pads 40, 40 are urged in a direction to separate them.

[0004]

[Problems to be solved by the device]

 The above-mentioned pad liner has the following problems.

<B> When the friction pad 40 is introduced into the arm portion 12 of the carrier 10, the corners of the engaging groove 41 of the friction pad 40 have sliding surfaces 32 to 3 excluding the formation range of the guide claws 32 a to 34 a. The corners of No. 4 are easily caught, and it is difficult to smoothly introduce the friction pad 40.

<B> Since each of the guide claws 32a to 34a is bent with its tip inclined inward, the bending step is difficult and many steps are required for processing.

[0007]

[Purpose of the present invention]

 The present invention has been made to solve the above problems, and an object of the present invention is to provide a pad liner for a disc brake, which can smoothly introduce a friction pad and has excellent workability. It is in.

[0008]

[Means for solving problems]

 According to the present invention, arm portions parallel to the rotor axis are provided on both sides of the torque receiving member, and a pair of friction pads frictionally engaged with both side surfaces of the rotor are mounted between the arm portions, and the opposing arm portion and the friction pad are provided. A disc brake in which a friction pad is slidably engaged with a plate pad liner at the engaging portion of the disc brake is provided with a liner portion that can be mounted on the arm portion of the torque receiving member. A disc brake characterized in that a guide claw having a slanted portion extending over at least two surfaces is formed by tapering the tip of the sliding surface extending in the rotor axis direction and inclining the tip inward. It is a pad liner.

[0009]

Embodiment 1 An embodiment of the present invention will be described below with reference to the drawings. The same parts as those of the above-described base technology of the present invention (FIGS. 5 to 7) are designated by the same reference numerals and the description thereof will be omitted.

<B> Pad Liner The pad liner 30 is made by bending a single thin steel plate into the shape shown in FIG. 1, and connects the pair of liner portions 31, 31 and the liner portions 31, 31. The connecting portion 35, the elastic piece 36 extending from the center of the upper end of the connecting portion 35 and elastically contacting with the caliper 20, and the elastic piece 36 facing the central opening between the liner portions 31, 31 and the central lower portion of the connecting portion 35. And a slip prevention piece 37 formed by bending in the opposite direction. The elastic piece 36 may be omitted. The detent pieces 37 come into contact with the inner wall surfaces (the rotor clearance grooves 14 of FIG. 3) of the arms 12, 12 of the carrier 10 to hold the stoppers for resisting the axial force of the rotor acting on the pad liner 30. Since it is a piece, there is no particular need to apply a spring force to the shift-preventing piece 37 to make elastic contact with the inner side surfaces of the arms 12, 12.

<B> Liner Part FIG. 2 shows a developed view of the liner part 31. In the figure, L _{1 to} L ₆ indicate bending lines, and the liner portion 31 has three continuous sliding surfaces 32 to 34 that are bent in a substantially U-shape, and one of these sliding surfaces 32 to 34. The end (the right end in the drawing) is extended in a substantially triangular shape, and the tip of the extension piece is lightly bent inward along the bending line L ₆ to form a guide claw 38. More precisely, the guide claw 38 includes the range on the right side of the end position L ₇ of the engaging protrusion shown by the alternate long and short dash line in addition to the range bent inward along the bending line L ₆ . Further, a linear or curved sloped portion 39, 39 extending from the tip of the internal claw 38 extending from at least one edge of the sliding surface 33 in the rotor axial direction to the respective sliding surfaces 32, 34. Are formed. In short, the slanted portions 39, 39 formed on the guide claw 38 are located between the corners of the sliding surfaces 32 to 34 forming the liner portion 31, and the end portion of the engagement projection 13 formed on the arm portion 12 of the carrier 10. It suffices that it is designed so as not to obstruct the introduction of the friction pad 40 by disposing the friction pad 40.

[0012]

[Action]

 Next, the assembling of the friction pad will be described.

As shown in FIG. 3, the liner portion 31 of the pad liner 30 is extended to the side where the friction pad 40 is introduced, and a tapered guide claw 38 is formed. The guide claw 38 has inclined portions 39, 39 which are continuous from the central sliding surface 33 to the sliding surfaces 32, 34 on both sides. Therefore, the engagement groove 41 of the friction pad 40 is guided in the tapered guide claw 38 which is inclined inward and is introduced. At this time, since the inclined portions 39, 39 of the guide claw 38 are arranged so as to cover the end portions of the engaging protrusions 13 formed on the arm portion 12 of the carrier 10, and are formed continuously, friction is prevented. The engaging groove 41 of the pad 40 can be smoothly introduced into the arm 12 of the carrier 10 without being caught by the end face of the engaging protrusion 13 or the corner of the liner 31.

[0014]

Second Embodiment In the above-mentioned embodiment, the guide claw 38 is formed on the sliding surface 33 in the middle of the liner portion 31, but it is extended from the other sliding surface 34 as shown in FIG. The guide claw 38 may be formed, and the inclined portion 39 may be formed across the sliding surfaces 32 and 33. Although not shown, the upper sliding surface 32 may be extended and a guide claw 38 may be formed on it. Also in the case of this embodiment, it is important that the inclined portion 39 formed on the guide claw 38 is formed so as to cover the end portion of the engaging protrusion 13 formed on the arm portion 12 of the carrier 10, as in the above-described embodiment. Is.

[0015]

Third Embodiment Although the guide claw 38 and the inclined portion 39 are formed at one end (outside) of the liner portion 31 in the above description, they may be formed at the other end (inside).

[0016]

Fourth Embodiment The pad liner 30 may be composed of a single liner portion 31.

[0017]

[Embodiment 5] In the above embodiment, the case where the friction pads 40, 40 are supported by the arm 12 formed on the carrier 10 has been described. It may be applied to a disc brake of the type in which the friction pads 40, 40 are supported by the. Alternatively, arm portions may be formed on the carrier 10 side and the caliper 20 side, respectively, and the invention may be applied to a disc brake of a type in which the inner side and outer side friction pads 40, 40 are supported separately.

[0018]

[Effect of device]

 Since the present invention is as described above, the following effects can be obtained.

<B> Since the end of the sliding surface that constitutes the liner portion is extended to form the guide claw having the inclined portion that extends over at least two surfaces of the sliding surface, the friction pad engagement Since the corners of the dowel groove do not get caught on the engaging projection ends of the torque receiving member or the corners of the liner, the friction pad can be smoothly introduced into the arm of the torque receiving member, and the friction pad can be easily assembled. It

<B> Since there is only one guide claw formed on the pad liner, bending of the guide claw is easy.

<C> If an elastic piece for urging the friction pad in one direction is integrally provided on the pad liner, an independent anti-rattle spring can be omitted.

[Brief description of drawings]

FIG. 1 is a perspective view of a pad liner according to a first embodiment.

[Figure 2] Development view of the liner section

FIG. 3 is a partial cross-sectional view of a friction pad and an arm mounting portion.

FIG. 4 is a development view of a liner portion according to a second embodiment.

FIG. 5 is a plan view of the disc brake.

6 is a sectional view of VI-VI in FIG.

FIG. 7 is a perspective view of a pad liner on which the present invention is based.

Claims (2)

[Scope of utility model registration request] 1. A pair of friction pads, which are frictionally engaged with both side surfaces of a rotor, are mounted between the arm portions on both sides of the torque receiving member so as to frictionally contact with the opposing arm portions. A disc brake in which a friction pad is slidably engaged by interposing a plate-shaped pad liner in an engaging portion of the pad, is provided with a liner portion that can be mounted on an arm portion of a torque receiving member, and the liner portion is A disc brake characterized in that a guide claw having a slanted portion extending over at least two surfaces is formed by extending an end of a sliding surface which is formed in the axial direction of the rotor and inclining the tip inwardly. Pad liner. 2. The elastic piece according to claim 1, wherein an elastic piece for urging the friction pad in one direction is integrally provided.
Disc brake pad liner.