WO2018079795A1 - Disc brake device - Google Patents

Disc brake device Download PDF

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Publication number
WO2018079795A1
WO2018079795A1 PCT/JP2017/039208 JP2017039208W WO2018079795A1 WO 2018079795 A1 WO2018079795 A1 WO 2018079795A1 JP 2017039208 W JP2017039208 W JP 2017039208W WO 2018079795 A1 WO2018079795 A1 WO 2018079795A1
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WO
WIPO (PCT)
Prior art keywords
rotor
caliper
slide
slide pin
disc brake
Prior art date
Application number
PCT/JP2017/039208
Other languages
French (fr)
Japanese (ja)
Inventor
伊藤　康二
Original Assignee
株式会社アドヴィックス
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Filing date
Publication date
Application filed by 株式会社アドヴィックス filed Critical 株式会社アドヴィックス
Publication of WO2018079795A1 publication Critical patent/WO2018079795A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
    • F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
    • F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
    • F16D55/2265—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof

Definitions

  • the present invention relates to a disc brake device.
  • a protective member is installed against the caliper in order to prevent foreign matters such as rocks and earth and sand from entering the protected portion.
  • the disc brake device described in Japanese Patent Application Laid-Open No. 2009-222171 includes a cover that partially covers the radial outside of the rotor (disc rotor) of the caliper as a protective member.
  • the above-described disc brake device has a problem that the device becomes large because the cover extends in the circumferential direction of the rotor. Further, even in a configuration having a slide pin for allowing the caliper to move relative to the mount, an outer peripheral member such as a slide pin between the caliper and the mount or a pin boot mounted on the outer peripheral side of the slide pin is protected. As described above, a protective member is provided on the caliper so that foreign matter does not enter between the caliper and the mount. Also in this case, since the slide pins are disposed at both ends of the caliper in the circumferential direction of the rotor, the protective member extends in the circumferential direction of the rotor, and the same problem as described above occurs.
  • the present invention has been made in view of such circumstances, and an object of the present invention is to provide a disc brake device that is capable of suppressing both the entry of foreign matter between a caliper and a mount and downsizing. .
  • the caliper is supported to be slidable in the axial direction of the rotor with respect to the mount in a state where the slide pin fixed to the caliper is inserted into the pin guide hole provided in the mount.
  • each of the slide pin located on the rotor entry side and the slide pin located on the rotor delivery side is separately mounted, or the rotor entry side
  • a protective member attached to one of the slide pin located on the rotation side of the rotor and the slide pin located on the outlet side of the rotor, and the slide pin includes a head disposed outside the caliper
  • the protection member extends from the mounting portion, the mounting portion sandwiched between the head and the caliper in a state where the shaft portion is inserted, And a protection part disposed on the outer peripheral side of the slide part located between the caliper and the mount.
  • the protective member since an independent protective member is installed for each slide pin, it is not necessary to greatly extend the protective member in the circumferential direction of the rotor. As a result, the protective member can be downsized, and the disc brake device can be downsized.
  • the protective portion is disposed on the outer peripheral side of the slide portion located between the caliper and the mount, at least a part between the caliper on which the slide pin is disposed and the mount is covered with the protective portion. Thereby, it can suppress that a foreign material enters between a caliper and a mount. According to the present invention, it is possible to achieve both suppression of the entry of foreign matter between the caliper and the mount and miniaturization.
  • FIG. 2 is a sectional view taken along line II-II in FIG.
  • FIG. 3 is a sectional view taken along line III-III in FIG. 1.
  • the axial direction of the rotor (disk rotor) R is referred to as “rotor axial direction”
  • the radial direction of the rotor R is referred to as “rotor radial direction”
  • the circumferential direction of the rotor R is referred to as “rotor circumferential direction”.
  • rotor turn-in side leading side
  • rotor return side rotor return side
  • the disc brake device 1 of the first embodiment is a floating disc brake device, and as shown in FIGS. 1 to 4, a mount 2, a caliper 3, a slide pin 4, a pin boot 5, and a pair of pads. 6 and a protective member 7.
  • a mount 2 a mount 2
  • a caliper 3 a slide pin 4
  • a pin boot 5 a pair of pads. 6
  • a protective member 7 a protective member 7.
  • FIG. 1 the protection member 7 on the rotor delivery side is indicated by a dotted line and is shown in a state where the protection member 7 is seen through.
  • FIG. 4 only a part of the protection member 7 (a mounting part 71 described later) is shown, and the other parts are omitted.
  • the mount 2 is a metal member (torque member) attached to a member on the vehicle body side. As shown in FIGS. 1 and 3, the mount 2 includes a pair of straddling portions 21 that straddle the rotor R in the rotor axial direction, and a pair of outer side torque receivers that extend inwardly in the rotor radial direction from one end of each straddling portion 21. A pair of inner torque receiving portions 24 extending from the other end of each straddling portion 21 to the inner side in the rotor radial direction. 10) and a bridging portion 25 (see FIG. 10) for bridging the tip portions of the pair of inner side torque receiving portions 24.
  • Each pin 21 has a pin guide hole 21a extending in the rotor axial direction.
  • a slide pin 4 is inserted into the pin guide hole 21a so as to be slidable in the rotor axial direction, and the caliper 3 is attached to the mount 2 via the slide pin 4 so as to be movable relative to the mount 2.
  • the pin guide holes 21a are provided in a portion on the rotor turn-in side and a portion on the rotor turn-out side of the mount 2, respectively. That is, the mount 2 has two pin guide holes 21a.
  • the caliper 3 is a metal member (for example, an aluminum member), and has a caliper main body portion 31 that straddles the rotor R in the rotor axial direction and a pair of arm portions 32 as shown in FIG.
  • the pair of arm portions 32 extend from the inner side portion 31 a of the caliper main body portion 31 so as to face the straddle portion 21 of the mount 2 in the rotor axial direction.
  • Each arm portion 32 is formed with a fastening hole 32a which is a hole penetrating in the rotor axial direction and has a thread formed on the inner peripheral surface thereof.
  • a cylinder portion 31 b into which the piston 10 is inserted is formed in the inner side portion 31 a of the caliper main body portion 31.
  • the outer side part 31c of the caliper main body 31 is formed in a pair of claw shapes.
  • the slide pin 4 is a bolt-shaped metal member (so-called slide pin bolt) attached to each arm portion 32.
  • the slide pin 4 is fixed to each of the arm portion 32 on the rotor feed-in side and the arm portion 32 on the rotor feed-out side.
  • the slide pin 4 includes a head 41 disposed outside the caliper 3 and a shaft 42 extending from the head 41.
  • the head 41 is formed such that a cross section cut along a plane orthogonal to the axial direction (hereinafter referred to as “axial orthogonal cross section”) has a polygonal shape (here, a hexagonal shape).
  • the shaft portion 42 is formed in a columnar shape as a whole, and has a screwing portion 421 to be screwed into the fastening hole 32a of the caliper 3 and a slide portion 422 formed so as to be able to be inserted into the pin guide hole 21a. is doing.
  • the screwing portion 421 is a portion where a screw thread corresponding to the fastening hole 32a is formed in the shaft portion 42, and is a portion screwed with the fastening hole 32a.
  • the slide part 422 is a cylindrical part of the shaft part 42 in which no thread is formed, and is inserted into the pin guide hole 21a so as to be slidable in the rotor axial direction. When a part of the shaft portion 42 where the screw thread is formed is located between the caliper 3 and the mount 2, the part can be said to be a part of the slide part 422.
  • the axial orthogonal cross-sectional area of the head 41 is larger than the axial orthogonal cross-sectional area of the screwing portion 421.
  • the slide pin 4 and the caliper 3 are fastened (screwed) with the head 41 pressing the caliper 3 via the protective member 7.
  • the caliper 3 can be moved relative to the mount 2 by a slide pin 4 (slidable).
  • the disc brake device 1 has the caliper 3 slid in the rotor axial direction with respect to the mount 2 with the slide pin 4 fixed to the caliper 3 being inserted into the pin guide hole 21 a provided in the mount 2. It is configured to be supported.
  • the pin boot 5 is provided for each slide pin 4, and a portion of the slide pin 4 exposed between the straddle portion 21 of the mount 2 and the arm portion 32 of the caliper 3 (hereinafter referred to as “exposed portion”). It is a boot member for covering.
  • the pin boot 5 is a bellows cylindrical elastic member (for example, a rubber member) having one end fixed to the straddle portion 21 and the other end fixed to the exposed portion of the slide pin 4 or the arm portion 32.
  • One end of the pin boot 5 constitutes a bush, is assembled in an annular groove 21b provided in the pin guide hole 21a, and engages the mount 2 in the axial direction of the pin guide hole 21a.
  • the other end portion of the pin boot 5 is assembled to an engaging portion 422 a provided in the slide portion 422 and is engaged with the slide portion 422 in the rotor axial direction.
  • the engaging part 422a of the first embodiment is an annular groove.
  • the pin boot 5 is disposed so as to cover the exposed portion of the slide pin 4, and expands and contracts as the slide pin 4 slides.
  • the pair of pads 6 are mounted on the mount 2 so as to be movable in the rotor axial direction.
  • the pair of pads 6 are disposed inside the caliper 3 so as to face each other in the rotor axial direction via the rotor R.
  • Each pad 6 includes a friction material 61 that generates a braking force by slidingly contacting the rotor R, and a back plate 62 that supports the back surface of the friction material 61.
  • the caliper 3 moves relative to the mount 2 by sliding with the slide pin 4, the outer side pad 6 approaches the rotor R, and the pair of friction members 61 sandwich the rotor R. Thereby, a braking force is generated for the rotor R.
  • the disc brake device 1 includes the mount 2 attached to the vehicle body side member, the pair of pads 6 movably attached to the mount 2, and the piston that presses one of the pair of pads 6 toward the rotor R. 10 and a caliper 3 that is movably attached to the mount 2 to press the other pad 6 toward the rotor R.
  • the slide pin 4 and the pin guide hole are provided in the caliper 3 and the mount 2. 21a is provided correspondingly, and the slide pin 4 is inserted into the pin guide hole 21a so that the mount 2 supports the caliper 3 so as to be slidable in the rotor axial direction.
  • the protective member 7 is a metal member that is separately attached to each of the slide pin 4 on the return side of the rotor R and the slide pin 4 on the return side of the rotor R. That is, the disc brake device 1 includes two independent protective members 7. As shown in FIGS. 1 and 5 to 12, each protection member 7 includes a mounting part 71, a protection part 72, and a positioning part 73. 5 to 8 show the protective member 7 on the rotor delivery side, and FIGS. 9 to 12 show examples of mounting the protective member 7.
  • the shape of the caliper 3 is slightly different from that in FIGS. ing.
  • the mounting portion 71 is a portion that is sandwiched between the head portion 41 and the caliper 3 (arm portion 32) in a state where the shaft portion 42 of the slide pin 4 is inserted.
  • the mounting portion 71 is arranged (fixed) between the head 41 and the caliper 3 by being screwed with the slide pin 4 and the caliper 3 while being pressed by the head 41 and the caliper 3.
  • the mounting portion 71 is formed in an annular shape, and the shaft portion 42 is inserted through a through hole 71a formed in the center. More specifically, the mounting portion 71 includes an annular substrate portion 711 that forms the through hole 71a, and a plurality of protruding portions 712.
  • Each protruding portion 712 slightly protrudes from the inner peripheral edge of the substrate portion 711 toward the caliper 3.
  • the tip of the protruding portion 712 is formed in an edge shape.
  • the plurality of protruding portions 712 are arranged at equal intervals on the inner peripheral edge of the substrate portion 711.
  • the protection part 72 is a part that extends from the mounting part 71 and is arranged on the outer peripheral side of the slide part 422 located between the caliper 3 and the mount 2. In other words, the protection part 72 is arranged on the outer peripheral side of the slide part 422 so as to cover a part of the outer peripheral surface of the slide part 422 located between the caliper 3 and the mount 2 (which can also be said to be outside the pin guide hole 21a). It is the part which was done.
  • the protection part 72 of the first embodiment is disposed on the outer peripheral side of the pin boot 5 so as to cover a part of the outer peripheral surface of the pin boot 5.
  • the pin boot 5 is a member that covers the exposed portion of the slide portion 422, and is located on the outer peripheral side of the slide portion 422 located between the caliper 3 and the mount 2. That is, the protection part 72 is arranged on the outer peripheral side of the slide part 422 located between the caliper 3 and the mount 2 via the pin boot 5.
  • the protective portion 72 includes a first plate-like portion 721 extending on the same plane as the substrate portion 711 from the outer peripheral portion of the substrate portion 711, and a first plate-like portion extending from the first plate-like portion 721 to the rotor axial outer side.
  • the second plate-like portion 722 is formed according to the shape of the arm portion 32, and in order to follow the outer peripheral surface of the arm portion 32 (or the outer peripheral surface of the pin boot 5), the plate-like member is moved to the arm portion 32 (pin boot). 5)
  • One or more bending portions 722a and 722b that are bent to the side are provided.
  • the second plate-like portion 722 has curved portions 722 a and 722 b that bend the plate-like member so as to surround the pin boot 5.
  • the second plate-like portion 722 includes a first plane 722x, a second plane 722y, a third plane 722z, a curved portion 722a that connects the first plane 722x and the second plane 722y, and a second plane 722y. And a curved portion 722b connecting the third plane 722z.
  • the first plane 722x and the second plane 722y are located on the outer side in the rotor radial direction of the pin boot 5 and cover a portion on the outer side in the rotor radial direction of the pin boot 5.
  • the third plane 722z of the protection member 7 on the rotor turn-in side is located on the rotor turn-in side of the pin boot 5 and covers a portion of the pin boot 5 on the rotor turn-in side.
  • the third flat surface 722z of the protection member 7 on the rotor delivery side is located on the rotor delivery side of the pin boot 5 and covers the portion of the pin boot 5 on the rotor delivery side.
  • the first plane 722x extends from the first plate-like portion 721 to the outer peripheral side of the inner side end portion of the straddling portion 21.
  • the second plane 722 y and the curved portions 722 a and 722 b extend from the outer peripheral side of the outer side end portion of the arm portion 32 to the outer peripheral side of the inner side end portion of the straddling portion 21.
  • the third plane 722z extends from the outer peripheral side of the outer side end portion of the arm portion 32 to a position close to (or abuts on) the inner side end surface of the straddling portion 21.
  • the third plane 722z has a length in the rotor axial direction that is smaller than that of other portions, and forms a step with the curved portion 722b.
  • the length of the third plane 722z in the rotor axial direction is larger than the length of the pin boot 5 in the rotor axial direction.
  • the second plate-like portion 722 includes at least a portion of the pin boot 5 on the outer side in the rotor radial direction and a portion far from the cylinder portion 31b in the circumferential direction of the rotor (a portion on the rotor entry / exit side or the rotor turn-out). Side part). More specifically, the second plate-like portion 722 of the first embodiment covers the entire rotor axial direction at the outer portion in the rotor radial direction and the entire rotor axial direction at the portion far from the cylinder portion 31b in the rotor circumferential direction. ing.
  • the “side far from the cylinder portion 31b” can be said to be “the far side from the central portion of the caliper 3 in the circumferential direction of the rotor”.
  • the positioning portion 73 is a plate-like portion that protrudes from the position facing the first plane 722x of the second plate-like portion 722 in the substrate portion 711 toward the outer side in the rotor axial direction.
  • the positioning part 73 is formed along the shape of the arm part 32.
  • the positioning portion 73 is in contact with (or close to) the outer peripheral surface of the base portion side (the caliper main body portion 31 side) of the arm portion 32.
  • the positioning portion 73 engages the mounting portion 71 and the arm portion 32 in the rotation direction around the central axis of the slide pin 4 (shaft portion 42).
  • the positioning part 73 restricts the rotation of the mounting part 71 relative to the arm part 32.
  • the shapes of the two protective members 7 are symmetrical (see FIGS. 1, 9 and 10). That is, in the protection member 7 (corresponding to the “first protection member”) 7 on the rotor turn-in side, the protection portions 72 are located on the outer side in the rotor radial direction and on the rotor turn-in side, 7) corresponding to “2 protective members”, the protective portions 72 are located on the outer side in the rotor radial direction and on the rotor outlet side.
  • the disc brake device 1 according to the first embodiment includes a pin boot 5 that is disposed between the caliper 3 and the mount 2 and covers the slide portion 422 located between the caliper 3 and the mount 2. It arrange
  • the protective member 7 since separate independent protective members 7 are installed for the two slide pins 4, it is not necessary to greatly extend the protective member 7 in the rotor circumferential direction. As a result, the protective member 7 can be downsized, and the disc brake device 1 can be downsized. Further, since the protective member 7 protects the pin boot 5 on the outer side in the rotor radial direction where foreign matter is likely to enter and the side far from the cylinder portion 31b in the rotor circumferential direction, the pin boot 5 (between the caliper 3 and the mount 2). It is possible to prevent foreign matter from entering the surface. Thereby, generation
  • the first embodiment it is possible to prevent foreign matter from entering between the caliper 3 and the mount 2 without increasing the size. That is, according to the first embodiment, it is possible to achieve both reduction in size and suppression of entry of foreign matter between the caliper 3 and the mount 2.
  • the protection member 7 has the positioning part 73, the position shift by rotation of the protection member 7 is suppressed. Thereby, it can maintain at the position which the protection part 72 aimed, and can suppress the approach of a foreign material with a sufficient precision.
  • the mounting portion 71 has the protruding portion 712, when the slide pin 4 is screwed into the caliper 3 and the mounting portion 71 is sandwiched between the head 41 and the caliper 3, the protruding portion 712 is brought into the caliper 3. The biting force increases the frictional force between the mounting portion 71 and the caliper 3. Thereby, rotation of the protection member 7 is suppressed and it can suppress that the screwing state of the slide pin 4 and the caliper 3 loosens.
  • the protective member 7 of the first embodiment is composed of a plate-like member, it is thin and easy to miniaturize, which is advantageous from the viewpoint of weight reduction. Further, it is not necessary to match the positions of the two locations at the same time, and the work for attaching the protective member 7 is facilitated. Further, since the protective member 7 is separated, no stress is generated between the protective members 7, and the durability is excellent.
  • FIG. 13 shows the protection member 7 on the rotor delivery side of the second embodiment.
  • the mounting portion 71 of the second embodiment includes a substrate portion 711 and projecting portions 712 formed on both surfaces (both surfaces in the rotor axial direction) of the substrate portion 711.
  • the plurality of projecting portions 712 formed on one side are portions projecting from the outer side end surface (end surface on the caliper 3 side) of the substrate portion 711 toward the caliper 3, and radiate on the outer side end surface of the substrate portion 711. Is formed.
  • the plurality of projecting portions 712 formed on the other side are portions projecting from the inner side end surface (end surface on the head 41 side) of the substrate portion 711 toward the head 41, and on the inner side end surface of the substrate portion 711. It is formed radially.
  • Each protruding portion 712 has an edge shape (for example, a triangular apex) at the tip.
  • edge shape for example, a triangular apex
  • illustration is abbreviate
  • the present invention is not limited to the above embodiment.
  • the first protection member 7 is mounted on the slide pin 4 positioned on the rotor turn-in side and the second protection member is mounted on the slide pin 4 positioned on the rotor turn-out side. 7, and the shape of the first protection member 7 and the shape of the second protection member 7 may be the same.
  • a second protection part 72 is formed in the mounting part 71 instead of the positioning part 73, and the tip part of the second protection part 72 is placed in a part corresponding to the second protection part 72 in the caliper 3. You may form the recessed part to accommodate.
  • the protection member 7 having two protection portions 72 formed symmetrically can be mounted on both the rotor turn-in side and the rotor turn-out side, and the protection member 7 can be shared, that is, the number of parts can be reduced. Become. In this case, the protection part 72 also exhibits a positioning function. Moreover, the protection part 72 may be curving to the whole like a part of cylinder, for example. Moreover, it is preferable that the protection part 72 can protect at least 2 directions like the 2nd plate-shaped part 722, and when using a flat plate member, it is preferable to have 1 or more (one or more) curved parts.
  • the slide pin 4 may be composed of a plurality of members as described in, for example, Japanese Patent Application Laid-Open No. 2005-220942.
  • the slide pin 4 may include, for example, a bolt member that is screwed to the caliper 3 and a slide member that is screwed to the distal end portion of the bolt member.
  • the part screwed into the caliper 3 of the bolt member corresponds to the screwing part 421, and the slide member corresponds to the slide part 422. Even if it is such a structure, the effect similar to the said embodiment is exhibited.
  • the engaging portion 422a may be a protruding portion that protrudes in an annular shape from the outer peripheral surface of the slide member.
  • the protection member 7 may be attached to either the slide pin 4 located on the rotor turn-in side or the slide pin 4 located on the rotor turn-out side.
  • the protective member 7 may be provided only for the slide pin 4 on the rotor turn-in side where foreign objects are relatively easy to enter.
  • the present invention is applicable even when the pin boot 5 is not provided between the caliper 3 and the mount 2 or when a member other than the pin boot 5 is disposed.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

This disc brake device comprises a protection member 7 that: is installed on a slide pin 4 that is positioned on a turn-in side of a rotor R or a slide pin 4 that is positioned on a turn-out side of the rotor R; or is separately installed on each of the slide pin 4 that is positioned on the turn-in side of the rotor R and the slide pin 4 that is positioned on the turn-out side of the rotor R. The protection member 7 comprises: an installation part 71 that, with a shaft part 42 inserted therethrough, is sandwiched and held by a head part 41 and a caliper 3; and a protection part 72 that extends from the installation part 71 and is arranged on an outer circumferential side of a slide region 422 that is positioned between the caliper 3 and a mount 2.

Description

ディスクブレーキ装置Disc brake device
　本発明は、ディスクブレーキ装置に関する。 The present invention relates to a disc brake device.
　ディスクブレーキ装置では、保護対象部位に岩石や土砂などの異物が入り込むのを防止するために、キャリパに対して保護部材が設置されている。例えば特開２００９－２２２１７１号公報に記載のディスクブレーキ装置は、保護部材として、キャリパのうちロータ（ディスクロータ）の径方向外側を部分的に被覆するカバーを備えている。 In the disc brake device, a protective member is installed against the caliper in order to prevent foreign matters such as rocks and earth and sand from entering the protected portion. For example, the disc brake device described in Japanese Patent Application Laid-Open No. 2009-222171 includes a cover that partially covers the radial outside of the rotor (disc rotor) of the caliper as a protective member.
特開２００９－２２２１７１号公報JP 2009-222171 A
　しかしながら、上記ディスクブレーキ装置では、カバーがロータの周方向に延びているため、装置が大型化してしまう課題がある。また、キャリパをマウントに対して移動可能にするためのスライドピンを有する構成においても、キャリパとマウントの間のスライドピン又は当該スライドピンの外周側に装着されたピンブーツ等の外周部材を保護対象部位として、キャリパとマウントの間に異物が進入しないように、キャリパに保護部材が設けられている。この場合も、スライドピンがキャリパにおけるロータの周方向両端部に配置されているため、保護部材がロータの周方向に延び、上記同様の課題が生じる。 However, the above-described disc brake device has a problem that the device becomes large because the cover extends in the circumferential direction of the rotor. Further, even in a configuration having a slide pin for allowing the caliper to move relative to the mount, an outer peripheral member such as a slide pin between the caliper and the mount or a pin boot mounted on the outer peripheral side of the slide pin is protected. As described above, a protective member is provided on the caliper so that foreign matter does not enter between the caliper and the mount. Also in this case, since the slide pins are disposed at both ends of the caliper in the circumferential direction of the rotor, the protective member extends in the circumferential direction of the rotor, and the same problem as described above occurs.
　本発明は、このような事情に鑑みて為されたものであり、キャリパとマウントの間への異物の進入抑制と、小型化との両立が可能なディスクブレーキ装置を提供することを目的とする。 The present invention has been made in view of such circumstances, and an object of the present invention is to provide a disc brake device that is capable of suppressing both the entry of foreign matter between a caliper and a mount and downsizing. .
　本発明のディスクブレーキ装置は、キャリパに固定されたスライドピンがマウントに設けられたピンガイド孔に挿入された状態で、前記キャリパが前記マウントに対してロータの軸方向にスライド可能に支持されて構成されたディスクブレーキ装置において、前記ロータの回入側に位置する前記スライドピン及び前記ロータの回出側に位置する前記スライドピンのそれぞれに対して別個に装着され、又は前記ロータの回入側に位置する前記スライドピン及び前記ロータの回出側に位置する前記スライドピンの何れか一方に対して装着される保護部材を備え、前記スライドピンは、前記キャリパの外部に配置される頭部と、前記頭部から延びる軸部と、を有し、前記軸部は、前記キャリパに螺合される螺合部位と、前記ピンガイド孔に挿通可能に形成されたスライド部位と、を有し、前記保護部材は、前記軸部が挿通された状態で前記頭部と前記キャリパとにより挟持される装着部と、前記装着部から延設され、前記キャリパと前記マウントの間に位置する位置する前記スライド部位の外周側に配置された保護部と、を備える。 In the disc brake device of the present invention, the caliper is supported to be slidable in the axial direction of the rotor with respect to the mount in a state where the slide pin fixed to the caliper is inserted into the pin guide hole provided in the mount. In the constructed disc brake device, each of the slide pin located on the rotor entry side and the slide pin located on the rotor delivery side is separately mounted, or the rotor entry side A protective member attached to one of the slide pin located on the rotation side of the rotor and the slide pin located on the outlet side of the rotor, and the slide pin includes a head disposed outside the caliper A shaft portion extending from the head portion, and the shaft portion can be inserted through the pin guide hole and a screwed portion to be screwed into the caliper. And the protection member extends from the mounting portion, the mounting portion sandwiched between the head and the caliper in a state where the shaft portion is inserted, And a protection part disposed on the outer peripheral side of the slide part located between the caliper and the mount.
　本発明によれば、各スライドピンに対して独立した保護部材が設置されるため、保護部材をロータの周方向に大きく延伸させる必要がない。これにより、保護部材の小型化が可能となり、ひいてはディスクブレーキ装置の小型化が可能となる。また、保護部がキャリパとマウントの間に位置するスライド部位の外周側に配置されることで、スライドピンが配置されたキャリパとマウントの間の少なくとも一部が保護部により被覆される。これにより、キャリパとマウントの間に異物が入ることを抑制することができる。本発明によれば、キャリパとマウントの間への異物の進入抑制と、小型化との両立が可能となる。 According to the present invention, since an independent protective member is installed for each slide pin, it is not necessary to greatly extend the protective member in the circumferential direction of the rotor. As a result, the protective member can be downsized, and the disc brake device can be downsized. In addition, since the protective portion is disposed on the outer peripheral side of the slide portion located between the caliper and the mount, at least a part between the caliper on which the slide pin is disposed and the mount is covered with the protective portion. Thereby, it can suppress that a foreign material enters between a caliper and a mount. According to the present invention, it is possible to achieve both suppression of the entry of foreign matter between the caliper and the mount and miniaturization.
第一実施形態のディスクブレーキ装置の構成を示す構成図である。It is a block diagram which shows the structure of the disc brake apparatus of 1st embodiment. 図１のＩＩ－ＩＩ線断面図である。FIG. 2 is a sectional view taken along line II-II in FIG. 図１のＩＩＩ－ＩＩＩ線断面図である。FIG. 3 is a sectional view taken along line III-III in FIG. 1. 第一実施形態のスライドピン４の構成を示す概念図である。It is a conceptual diagram which shows the structure of the slide pin 4 of 1st embodiment. 第一実施形態の保護部材の構成を示す斜視図である。It is a perspective view which shows the structure of the protection member of 1st embodiment. 第一実施形態の保護部材の構成を示す正面図（ロータ軸方向インナ側から見た図）である。It is a front view (figure seen from the rotor axial direction inner side) which shows composition of a protection member of a first embodiment. 第一実施形態の保護部材の構成を示す底面図（ロータ径方向内側から見た図）である。It is a bottom view (figure seen from the rotor radial direction inner side) which shows the structure of the protection member of 1st embodiment. 第一実施形態の保護部材の構成を示す右側面図（ロータ回出側から見た図）である。It is a right view (figure seen from the rotor delivery side) which shows the structure of the protection member of 1st embodiment. 第一実施形態の保護部材の装着例を説明するための平面図（ロータ径方向外側から見た図）である。It is a top view (figure seen from the rotor radial direction outer side) for demonstrating the example of mounting | wearing of the protection member of 1st embodiment. 第一実施形態の保護部材の装着例を説明するための正面図（ロータ軸方向インナ側から見た図）である。It is a front view (figure seen from the rotor axial direction inner side) for demonstrating the example of mounting of the protection member of a first embodiment. 第一実施形態の保護部材の装着例を説明するための斜視図である。It is a perspective view for demonstrating the example of mounting of the protection member of a first embodiment. 第一実施形態の保護部材の装着例を説明するための拡大斜視図である。It is an expansion perspective view for demonstrating the example of mounting of the protection member of a first embodiment. 第二実施形態の保護部材の構成を示す正面図（ロータ軸方向インナ側から見た図）である。It is a front view (figure seen from the rotor axial direction inner side) which shows the composition of the protection member of a second embodiment.
　以下、本発明の実施形態について図に基づいて説明する。なお、説明に用いる各図は概念図であり、各部の形状は必ずしも厳密なものではない場合がある。また、説明において、ロータ（ディスクロータ）Ｒの軸方向を「ロータ軸方向」と称し、ロータＲの径方向を「ロータ径方向」と称し、ロータＲの周方向を「ロータ周方向」と称する。また、ロータＲが前進回転する際のロータＲの回入側（リーディング側）を「ロータ回入側」と称し、ロータＲが前進回転する際のロータＲの回出側（トレーリング側）を「ロータ回出側」と称する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Each figure used for explanation is a conceptual diagram, and the shape of each part may not necessarily be exact. In the description, the axial direction of the rotor (disk rotor) R is referred to as “rotor axial direction”, the radial direction of the rotor R is referred to as “rotor radial direction”, and the circumferential direction of the rotor R is referred to as “rotor circumferential direction”. . In addition, the rotor R's turn-in side (leading side) when the rotor R rotates forward is referred to as "rotor turn-in side", and the rotor R's turn-out side (trailing side) when the rotor R rotates forward is referred to as "rotor return side". This is referred to as “rotor delivery side”.
＜第一実施形態＞
　第一実施形態のディスクブレーキ装置１は、浮動型ディスクブレーキ装置であって、図１～図４に示すように、マウント２と、キャリパ３と、スライドピン４と、ピンブーツ５と、一対のパッド６と、保護部材７と、を有している。なお、説明の関係上、図１において、ロータ回出側の保護部材７は、点線で示され、当該保護部材７を透視した状態で記載されている。また、図４では、保護部材７の一部分（後述する装着部７１）のみが示され、その他の部分は省略されている。 <First embodiment>
The disc brake device 1 of the first embodiment is a floating disc brake device, and as shown in FIGS. 1 to 4, a mount 2, a caliper 3, a slide pin 4, a pin boot 5, and a pair of pads. 6 and a protective member 7. For the sake of explanation, in FIG. 1, the protection member 7 on the rotor delivery side is indicated by a dotted line and is shown in a state where the protection member 7 is seen through. In FIG. 4, only a part of the protection member 7 (a mounting part 71 described later) is shown, and the other parts are omitted.
　マウント２は、車体側の部材に取り付けられた金属部材（トルクメンバ）である。マウント２は、図１及び図３に示すように、ロータＲをロータ軸方向に跨ぐ一対の跨ぎ部２１と、各跨ぎ部２１の一端からロータ径方向内側に延出する一対のアウタ側トルク受部２２と、一対のアウタ側トルク受部２２の先端部間を架橋する架橋部２３と、各跨ぎ部２１の他端からロータ径方向内側に延出する一対のインナ側トルク受部２４（図１０参照）と、一対のインナ側トルク受部２４の先端部間を架橋する架橋部２５（図１０参照）と、を備えている。 The mount 2 is a metal member (torque member) attached to a member on the vehicle body side. As shown in FIGS. 1 and 3, the mount 2 includes a pair of straddling portions 21 that straddle the rotor R in the rotor axial direction, and a pair of outer side torque receivers that extend inwardly in the rotor radial direction from one end of each straddling portion 21. A pair of inner torque receiving portions 24 extending from the other end of each straddling portion 21 to the inner side in the rotor radial direction. 10) and a bridging portion 25 (see FIG. 10) for bridging the tip portions of the pair of inner side torque receiving portions 24.
　各跨ぎ部２１には、ロータ軸方向に延出するピンガイド孔２１ａが形成されている。ピンガイド孔２１ａには、スライドピン４がロータ軸方向にスライド可能に挿通されており、スライドピン４を介してキャリパ３がマウント２に対して相対移動可能に取付けられている。ピンガイド孔２１ａは、マウント２のロータ回入側の部位とロータ回出側の部位にそれぞれ設けられている。つまり、マウント２は、２つのピンガイド孔２１ａを有している。 Each pin 21 has a pin guide hole 21a extending in the rotor axial direction. A slide pin 4 is inserted into the pin guide hole 21a so as to be slidable in the rotor axial direction, and the caliper 3 is attached to the mount 2 via the slide pin 4 so as to be movable relative to the mount 2. The pin guide holes 21a are provided in a portion on the rotor turn-in side and a portion on the rotor turn-out side of the mount 2, respectively. That is, the mount 2 has two pin guide holes 21a.
　キャリパ３は、金属部材（例えばアルミ製部材）であって、図１に示すように、ロータＲをロータ軸方向に跨ぐキャリパ本体部３１と、一対のアーム部３２と、を有している。一対のアーム部３２は、キャリパ本体部３１のインナ側部位３１ａからマウント２の跨ぎ部２１にロータ軸方向に対向するように延出している。
　各アーム部３２には、ロータ軸方向に貫通した孔であって、内周面にねじ山が形成された締結孔３２ａが形成されている。また、キャリパ本体部３１のインナ側部位３１ａには、図２に示すように、ピストン１０が挿入されるシリンダ部３１ｂが形成されている。キャリパ本体部３１のアウタ側部位３１ｃは、一対の爪形状に形成されている。 The caliper 3 is a metal member (for example, an aluminum member), and has a caliper main body portion 31 that straddles the rotor R in the rotor axial direction and a pair of arm portions 32 as shown in FIG. The pair of arm portions 32 extend from the inner side portion 31 a of the caliper main body portion 31 so as to face the straddle portion 21 of the mount 2 in the rotor axial direction.
Each arm portion 32 is formed with a fastening hole 32a which is a hole penetrating in the rotor axial direction and has a thread formed on the inner peripheral surface thereof. Further, as shown in FIG. 2, a cylinder portion 31 b into which the piston 10 is inserted is formed in the inner side portion 31 a of the caliper main body portion 31. The outer side part 31c of the caliper main body 31 is formed in a pair of claw shapes.
　スライドピン４は、各アーム部３２に取り付けられるボルト状の金属部材（いわゆるスライドピンボルト）である。スライドピン４は、ロータ回入側のアーム部３２とロータ回出側のアーム部３２のそれぞれに固定されている。 The slide pin 4 is a bolt-shaped metal member (so-called slide pin bolt) attached to each arm portion 32. The slide pin 4 is fixed to each of the arm portion 32 on the rotor feed-in side and the arm portion 32 on the rotor feed-out side.
　具体的に、スライドピン４は、図１及び図４に示すように、キャリパ３の外部に配置された頭部４１と、頭部４１から延びる軸部４２と、を備えている。頭部４１は、軸方向に直交する面で切断した断面（以下「軸方向直交断面」という）が多角形状（ここでは六角形状）となるように形成されている。軸部４２は、全体として円柱状に形成されており、キャリパ３の締結孔３２ａに螺合される螺合部位４２１と、ピンガイド孔２１ａに挿通可能に形成されたスライド部位４２２と、を有している。螺合部位４２１は、軸部４２のうち締結孔３２ａに対応したねじ山が形成された部位であって、締結孔３２ａと螺合している部位である。スライド部位４２２は、軸部４２のうちねじ山が形成されていない円柱状の部位であって、ピンガイド孔２１ａ内にロータ軸方向にスライド可能に挿通されている。なお、軸部４２のうちねじ山が形成された部位の一部が、キャリパ３とマウント２の間に位置している場合、当該部分はスライド部位４２２の一部といえる。 Specifically, as shown in FIGS. 1 and 4, the slide pin 4 includes a head 41 disposed outside the caliper 3 and a shaft 42 extending from the head 41. The head 41 is formed such that a cross section cut along a plane orthogonal to the axial direction (hereinafter referred to as “axial orthogonal cross section”) has a polygonal shape (here, a hexagonal shape). The shaft portion 42 is formed in a columnar shape as a whole, and has a screwing portion 421 to be screwed into the fastening hole 32a of the caliper 3 and a slide portion 422 formed so as to be able to be inserted into the pin guide hole 21a. is doing. The screwing portion 421 is a portion where a screw thread corresponding to the fastening hole 32a is formed in the shaft portion 42, and is a portion screwed with the fastening hole 32a. The slide part 422 is a cylindrical part of the shaft part 42 in which no thread is formed, and is inserted into the pin guide hole 21a so as to be slidable in the rotor axial direction. When a part of the shaft portion 42 where the screw thread is formed is located between the caliper 3 and the mount 2, the part can be said to be a part of the slide part 422.
　頭部４１の軸方向直交断面積は、螺合部位４２１の軸方向直交断面積よりも大きい。スライドピン４とキャリパ３とは、頭部４１が保護部材７を介してキャリパ３を押圧した状態で、締結（ねじ止め固定）されている。キャリパ３は、スライドピン４により、マウント２に対して相対移動可能（スライド可能）となっている。このように、ディスクブレーキ装置１は、キャリパ３に固定されたスライドピン４がマウント２に設けられたピンガイド孔２１ａに挿入された状態で、キャリパ３がマウント２に対してロータ軸方向にスライド可能に支持されて構成されている。 The axial orthogonal cross-sectional area of the head 41 is larger than the axial orthogonal cross-sectional area of the screwing portion 421. The slide pin 4 and the caliper 3 are fastened (screwed) with the head 41 pressing the caliper 3 via the protective member 7. The caliper 3 can be moved relative to the mount 2 by a slide pin 4 (slidable). As described above, the disc brake device 1 has the caliper 3 slid in the rotor axial direction with respect to the mount 2 with the slide pin 4 fixed to the caliper 3 being inserted into the pin guide hole 21 a provided in the mount 2. It is configured to be supported.
　ピンブーツ５は、各スライドピン４に対して設けられており、スライドピン４のうちマウント２の跨ぎ部２１とキャリパ３のアーム部３２との間で露出した部位（以下「露出部」という）を被覆するためのブーツ部材である。ピンブーツ５は、一端部が跨ぎ部２１に固定され、他端部がスライドピン４の露出部又はアーム部３２に固定された蛇腹円筒状の弾性部材（例えばゴム部材）である。ピンブーツ５の一端部は、ブッシュを構成し、ピンガイド孔２１ａに設けられた環状溝２１ｂに組み付けられて、マウント２に対してピンガイド孔２１ａの軸方向に係合している。また、ピンブーツ５の他端部は、スライド部位４２２に設けられた係合部４２２ａに組み付けられて、スライド部位４２２に対してロータ軸方向に係合している。第一実施形態の係合部４２２ａは、環状溝である。ピンブーツ５は、スライドピン４の露出部を被覆するように配置され、スライドピン４のスライドに伴って伸縮する。 The pin boot 5 is provided for each slide pin 4, and a portion of the slide pin 4 exposed between the straddle portion 21 of the mount 2 and the arm portion 32 of the caliper 3 (hereinafter referred to as “exposed portion”). It is a boot member for covering. The pin boot 5 is a bellows cylindrical elastic member (for example, a rubber member) having one end fixed to the straddle portion 21 and the other end fixed to the exposed portion of the slide pin 4 or the arm portion 32. One end of the pin boot 5 constitutes a bush, is assembled in an annular groove 21b provided in the pin guide hole 21a, and engages the mount 2 in the axial direction of the pin guide hole 21a. Further, the other end portion of the pin boot 5 is assembled to an engaging portion 422 a provided in the slide portion 422 and is engaged with the slide portion 422 in the rotor axial direction. The engaging part 422a of the first embodiment is an annular groove. The pin boot 5 is disposed so as to cover the exposed portion of the slide pin 4, and expands and contracts as the slide pin 4 slides.
　一対のパッド６は、マウント２にロータ軸方向に移動可能に装着されている。一対のパッド６は、キャリパ３の内側でロータＲを介してロータ軸方向に対向して配置されている。各パッド６は、ロータＲに摺接されることで制動力を生ずる摩擦材６１と、摩擦材６１の裏面を支持する裏板６２と、を有している。シリンダ部３１ｂ内の液圧を増圧させることで、ピストン１０及びインナ側のパッド６がロータＲ側に押圧されるとともにシリンダ部３１ｂがロータＲから離れる側に押圧される。そして、スライドピン４でのスライドによりキャリパ３がマウント２に対して相対的に移動し、アウタ側のパッド６がロータＲに近づき、一対の摩擦材６１がロータＲを挟み込む。これにより、ロータＲに対して制動力が発生する。 The pair of pads 6 are mounted on the mount 2 so as to be movable in the rotor axial direction. The pair of pads 6 are disposed inside the caliper 3 so as to face each other in the rotor axial direction via the rotor R. Each pad 6 includes a friction material 61 that generates a braking force by slidingly contacting the rotor R, and a back plate 62 that supports the back surface of the friction material 61. By increasing the hydraulic pressure in the cylinder part 31b, the piston 10 and the inner pad 6 are pressed to the rotor R side, and the cylinder part 31b is pressed to the side away from the rotor R. Then, the caliper 3 moves relative to the mount 2 by sliding with the slide pin 4, the outer side pad 6 approaches the rotor R, and the pair of friction members 61 sandwich the rotor R. Thereby, a braking force is generated for the rotor R.
　このようにディスクブレーキ装置１は、車体側の部材に取付けられるマウント２と、マウント２に移動可能に取付けられる一対のパッド６と、一対のパッド６の一つをロータＲに向けて押圧するピストン１０を内装し且つ他の一つのパッド６をロータＲに向けて押圧するためにマウント２に移動可能に取付けられるキャリパ３と、を有し、キャリパ３及びマウント２にスライドピン４とピンガイド孔２１ａを対応させて設け、スライドピン４をピンガイド孔２１ａに挿入してマウント２がキャリパ３をロータ軸方向にスライド自在に支持するように構成されている。 As described above, the disc brake device 1 includes the mount 2 attached to the vehicle body side member, the pair of pads 6 movably attached to the mount 2, and the piston that presses one of the pair of pads 6 toward the rotor R. 10 and a caliper 3 that is movably attached to the mount 2 to press the other pad 6 toward the rotor R. The slide pin 4 and the pin guide hole are provided in the caliper 3 and the mount 2. 21a is provided correspondingly, and the slide pin 4 is inserted into the pin guide hole 21a so that the mount 2 supports the caliper 3 so as to be slidable in the rotor axial direction.
　保護部材７は、ロータＲの回入側のスライドピン４及びロータＲの回出側のスライドピン４のそれぞれに対して別個に装着された金属部材である。つまり、ディスクブレーキ装置１は、２つの独立した保護部材７を備えている。各保護部材７は、図１及び図５～図１２に示すように、装着部７１と、保護部７２と、位置決め部７３と、を備えている。なお、図５～図８はロータ回出側の保護部材７を表し、図９～図１２は保護部材７の装着例を表しており、キャリパ３の形状は図１～図３とは多少異なっている。 The protective member 7 is a metal member that is separately attached to each of the slide pin 4 on the return side of the rotor R and the slide pin 4 on the return side of the rotor R. That is, the disc brake device 1 includes two independent protective members 7. As shown in FIGS. 1 and 5 to 12, each protection member 7 includes a mounting part 71, a protection part 72, and a positioning part 73. 5 to 8 show the protective member 7 on the rotor delivery side, and FIGS. 9 to 12 show examples of mounting the protective member 7. The shape of the caliper 3 is slightly different from that in FIGS. ing.
　装着部７１は、スライドピン４の軸部４２が挿通された状態で、頭部４１とキャリパ３（アーム部３２）とにより挟持されている部位である。装着部７１は、スライドピン４とキャリパ３との螺合により、頭部４１とキャリパ３との間に、頭部４１とキャリパ３とにより押圧された状態で配置（固定）されている。装着部７１は、環状に形成されており、中央に形成された貫通孔７１ａに軸部４２が挿通されている。より詳細に、装着部７１は、貫通孔７１ａを形成する環状の基板部位７１１と、複数の突出部位７１２と、を備えている。各突出部位７１２は、基板部位７１１の内周縁からキャリパ３に向けて僅かに突出している。突出部位７１２の先端部はエッジ形状に形成されている。複数の突出部位７１２は、基板部位７１１の内周縁に等間隔に配置されている。 The mounting portion 71 is a portion that is sandwiched between the head portion 41 and the caliper 3 (arm portion 32) in a state where the shaft portion 42 of the slide pin 4 is inserted. The mounting portion 71 is arranged (fixed) between the head 41 and the caliper 3 by being screwed with the slide pin 4 and the caliper 3 while being pressed by the head 41 and the caliper 3. The mounting portion 71 is formed in an annular shape, and the shaft portion 42 is inserted through a through hole 71a formed in the center. More specifically, the mounting portion 71 includes an annular substrate portion 711 that forms the through hole 71a, and a plurality of protruding portions 712. Each protruding portion 712 slightly protrudes from the inner peripheral edge of the substrate portion 711 toward the caliper 3. The tip of the protruding portion 712 is formed in an edge shape. The plurality of protruding portions 712 are arranged at equal intervals on the inner peripheral edge of the substrate portion 711.
　保護部７２は、装着部７１から延設され、キャリパ３とマウント２の間に位置するスライド部位４２２の外周側に配置された部位である。換言すると、保護部７２は、キャリパ３とマウント２の間（ピンガイド孔２１ａの外部ともいえる）に位置するスライド部位４２２の外周面の一部を被覆可能に、スライド部位４２２の外周側に配置された部位である。第一実施形態の保護部７２は、ピンブーツ５の外周面の一部を覆うようにピンブーツ５の外周側に配置されている。上記のとおり、ピンブーツ５は、スライド部位４２２の露出部を被覆する部材であって、キャリパ３とマウント２の間に位置するスライド部位４２２の外周側に位置している。つまり、保護部７２は、ピンブーツ５を介して、キャリパ３とマウント２の間に位置するスライド部位４２２の外周側に配置されている。 The protection part 72 is a part that extends from the mounting part 71 and is arranged on the outer peripheral side of the slide part 422 located between the caliper 3 and the mount 2. In other words, the protection part 72 is arranged on the outer peripheral side of the slide part 422 so as to cover a part of the outer peripheral surface of the slide part 422 located between the caliper 3 and the mount 2 (which can also be said to be outside the pin guide hole 21a). It is the part which was done. The protection part 72 of the first embodiment is disposed on the outer peripheral side of the pin boot 5 so as to cover a part of the outer peripheral surface of the pin boot 5. As described above, the pin boot 5 is a member that covers the exposed portion of the slide portion 422, and is located on the outer peripheral side of the slide portion 422 located between the caliper 3 and the mount 2. That is, the protection part 72 is arranged on the outer peripheral side of the slide part 422 located between the caliper 3 and the mount 2 via the pin boot 5.
　ここで、第一実施形態の保護部７２の形状について詳細に説明する。保護部７２は、基板部位７１１の外周部から基板部位７１１と同一平面上で延設された第一板状部７２１と、第一板状部７２１からロータ軸方向アウタ側に延設された第二板状部７２２と、を備えている。第二板状部７２２は、アーム部３２の形状に応じて形成されており、アーム部３２の外周面（又はピンブーツ５の外周面）に沿わせるために、板状部材をアーム部３２（ピンブーツ５）側に湾曲させる１以上の湾曲部７２２ａ、７２２ｂを備えている。換言すると、第二板状部７２２は、ピンブーツ５を囲むように板状部材を湾曲させる湾曲部７２２ａ、７２２ｂを有している。 Here, the shape of the protection part 72 of the first embodiment will be described in detail. The protective portion 72 includes a first plate-like portion 721 extending on the same plane as the substrate portion 711 from the outer peripheral portion of the substrate portion 711, and a first plate-like portion extending from the first plate-like portion 721 to the rotor axial outer side. A two-plate portion 722. The second plate-like portion 722 is formed according to the shape of the arm portion 32, and in order to follow the outer peripheral surface of the arm portion 32 (or the outer peripheral surface of the pin boot 5), the plate-like member is moved to the arm portion 32 (pin boot). 5) One or more bending portions 722a and 722b that are bent to the side are provided. In other words, the second plate-like portion 722 has curved portions 722 a and 722 b that bend the plate-like member so as to surround the pin boot 5.
　さらに具体的に、第二板状部７２２は、第１平面７２２ｘ、第２平面７２２ｙ、第３平面７２２ｚ、第１平面７２２ｘと第２平面７２２ｙとを接続する湾曲部７２２ａ、及び第２平面７２２ｙと第３平面７２２ｚとを接続する湾曲部７２２ｂを備えている。第１平面７２２ｘ及び第２平面７２２ｙは、ピンブーツ５のロータ径方向外側に位置し、ピンブーツ５のロータ径方向外側の部位を被覆している。ロータ回入側の保護部材７の第３平面７２２ｚは、ピンブーツ５のロータ回入側に位置し、ピンブーツ５のロータ回入側の部位を被覆している。反対に、ロータ回出側の保護部材７の第３平面７２２ｚは、ピンブーツ５のロータ回出側に位置し、ピンブーツ５のロータ回出側の部位を被覆している。 More specifically, the second plate-like portion 722 includes a first plane 722x, a second plane 722y, a third plane 722z, a curved portion 722a that connects the first plane 722x and the second plane 722y, and a second plane 722y. And a curved portion 722b connecting the third plane 722z. The first plane 722x and the second plane 722y are located on the outer side in the rotor radial direction of the pin boot 5 and cover a portion on the outer side in the rotor radial direction of the pin boot 5. The third plane 722z of the protection member 7 on the rotor turn-in side is located on the rotor turn-in side of the pin boot 5 and covers a portion of the pin boot 5 on the rotor turn-in side. On the other hand, the third flat surface 722z of the protection member 7 on the rotor delivery side is located on the rotor delivery side of the pin boot 5 and covers the portion of the pin boot 5 on the rotor delivery side.
　第１平面７２２ｘは、第一板状部７２１から跨ぎ部２１のインナ側端部の外周側まで延伸している。第２平面７２２ｙ及び湾曲部７２２ａ、７２２ｂは、アーム部３２のアウタ側端部の外周側から跨ぎ部２１のインナ側端部の外周側まで延伸している。第３平面７２２ｚは、アーム部３２のアウタ側端部の外周側から跨ぎ部２１のインナ側端面に近接（又は当接）する位置まで延伸している。第３平面７２２ｚは、ロータ軸方向の長さが他の部位よりも小さく、湾曲部７２２ｂとの間で段差を形成している。第３平面７２２ｚのロータ軸方向の長さは、ピンブーツ５のロータ軸方向の長さよりも大きい。 The first plane 722x extends from the first plate-like portion 721 to the outer peripheral side of the inner side end portion of the straddling portion 21. The second plane 722 y and the curved portions 722 a and 722 b extend from the outer peripheral side of the outer side end portion of the arm portion 32 to the outer peripheral side of the inner side end portion of the straddling portion 21. The third plane 722z extends from the outer peripheral side of the outer side end portion of the arm portion 32 to a position close to (or abuts on) the inner side end surface of the straddling portion 21. The third plane 722z has a length in the rotor axial direction that is smaller than that of other portions, and forms a step with the curved portion 722b. The length of the third plane 722z in the rotor axial direction is larger than the length of the pin boot 5 in the rotor axial direction.
　このように、第二板状部７２２は、少なくとも、ピンブーツ５のうち、ロータ径方向外側の部位と、ロータ周方向におけるシリンダ部３１ｂから遠い側の部位（ロータ回入側の部位又はロータ回出側の部位）を被覆している。より詳細に、第一実施形態の第二板状部７２２は、ロータ径方向外側の部位のロータ軸方向全体と、ロータ周方向におけるシリンダ部３１ｂから遠い側の部位のロータ軸方向全体を被覆している。「シリンダ部３１ｂから遠い側」は、「キャリパ３のロータ周方向中央部から遠い側」ともいえる。 Thus, the second plate-like portion 722 includes at least a portion of the pin boot 5 on the outer side in the rotor radial direction and a portion far from the cylinder portion 31b in the circumferential direction of the rotor (a portion on the rotor entry / exit side or the rotor turn-out). Side part). More specifically, the second plate-like portion 722 of the first embodiment covers the entire rotor axial direction at the outer portion in the rotor radial direction and the entire rotor axial direction at the portion far from the cylinder portion 31b in the rotor circumferential direction. ing. The “side far from the cylinder portion 31b” can be said to be “the far side from the central portion of the caliper 3 in the circumferential direction of the rotor”.
　位置決め部７３は、基板部位７１１のうち第二板状部７２２の第１平面７２２ｘに対向する位置からロータ軸方向アウタ側に突出した板状部位である。位置決め部７３は、アーム部３２の形状に沿って形成されている。位置決め部７３は、アーム部３２の基端側（キャリパ本体部３１側）の外周面に当接（又は近接）している。位置決め部７３は、スライドピン４（軸部４２）の中心軸を中心とした回転方向に、装着部７１とアーム部３２とを係合させている。位置決め部７３は、アーム部３２に対する装着部７１の回転を規制している。 The positioning portion 73 is a plate-like portion that protrudes from the position facing the first plane 722x of the second plate-like portion 722 in the substrate portion 711 toward the outer side in the rotor axial direction. The positioning part 73 is formed along the shape of the arm part 32. The positioning portion 73 is in contact with (or close to) the outer peripheral surface of the base portion side (the caliper main body portion 31 side) of the arm portion 32. The positioning portion 73 engages the mounting portion 71 and the arm portion 32 in the rotation direction around the central axis of the slide pin 4 (shaft portion 42). The positioning part 73 restricts the rotation of the mounting part 71 relative to the arm part 32.
　２つの保護部材７の形状は、左右対称になっている（図１、図９及び図１０参照）。つまり、ロータ回入側の保護部材（「第１保護部材」に相当する）７では保護部７２がロータ径方向外側とロータ回入側とに位置し、ロータ回出側の保護部材（「第２保護部材」に相当する）７では保護部７２がロータ径方向外側とロータ回出側とに位置している。第一実施形態のディスクブレーキ装置１は、キャリパ３とマウント２との間に配置され、キャリパ３とマウント２との間に位置するスライド部位４２２を被覆するピンブーツ５を備え、保護部７２は、ピンブーツ５の外周面の一部を覆うようにピンブーツ５の外周側に配置されている。 The shapes of the two protective members 7 are symmetrical (see FIGS. 1, 9 and 10). That is, in the protection member 7 (corresponding to the “first protection member”) 7 on the rotor turn-in side, the protection portions 72 are located on the outer side in the rotor radial direction and on the rotor turn-in side, 7) corresponding to “2 protective members”, the protective portions 72 are located on the outer side in the rotor radial direction and on the rotor outlet side. The disc brake device 1 according to the first embodiment includes a pin boot 5 that is disposed between the caliper 3 and the mount 2 and covers the slide portion 422 located between the caliper 3 and the mount 2. It arrange | positions at the outer peripheral side of the pin boot 5 so that a part of outer peripheral surface of the pin boot 5 may be covered.
　第一実施形態によれば、２つのスライドピン４に対して別個の独立した保護部材７が設置されるため、保護部材７をロータ周方向に大きく延伸させる必要がない。これにより、保護部材７の小型化が可能となり、ひいてはディスクブレーキ装置１の小型化が可能となる。また、保護部材７は、ピンブーツ５のうち、異物が進入しやすいロータ径方向外側とロータ周方向におけるシリンダ部３１ｂから遠い側を保護しているため、ピンブーツ５（キャリパ３とマウント２の間）に異物が入り込むことを抑制することができる。これにより、異物の進入に起因する不具合の発生を抑制することができる。このように、第一実施形態によれば、大型化を伴うことなく、キャリパ３とマウント２の間に異物が入ることを抑制することができる。つまり、第一実施形態によれば、小型化と、キャリパ３とマウント２の間への異物の進入抑制との両立が可能となる。 According to the first embodiment, since separate independent protective members 7 are installed for the two slide pins 4, it is not necessary to greatly extend the protective member 7 in the rotor circumferential direction. As a result, the protective member 7 can be downsized, and the disc brake device 1 can be downsized. Further, since the protective member 7 protects the pin boot 5 on the outer side in the rotor radial direction where foreign matter is likely to enter and the side far from the cylinder portion 31b in the rotor circumferential direction, the pin boot 5 (between the caliper 3 and the mount 2). It is possible to prevent foreign matter from entering the surface. Thereby, generation | occurrence | production of the malfunction resulting from the approach of a foreign material can be suppressed. Thus, according to the first embodiment, it is possible to prevent foreign matter from entering between the caliper 3 and the mount 2 without increasing the size. That is, according to the first embodiment, it is possible to achieve both reduction in size and suppression of entry of foreign matter between the caliper 3 and the mount 2.
　また、保護部材７が位置決め部７３を有しているため、保護部材７の回転による位置ずれが抑制される。これにより、保護部７２が狙った位置で維持され、異物の進入を精度良く抑制することができる。また、装着部７１は突出部位７１２を有しているため、スライドピン４がキャリパ３に螺合されて装着部７１が頭部４１とキャリパ３に挟持されると、突出部位７１２がキャリパ３に食い込み、装着部７１とキャリパ３との間の摩擦力が大きくなる。これにより、保護部材７の回転が抑制され、スライドピン４とキャリパ３との螺合状態が緩むことを抑制することができる。 Moreover, since the protection member 7 has the positioning part 73, the position shift by rotation of the protection member 7 is suppressed. Thereby, it can maintain at the position which the protection part 72 aimed, and can suppress the approach of a foreign material with a sufficient precision. Further, since the mounting portion 71 has the protruding portion 712, when the slide pin 4 is screwed into the caliper 3 and the mounting portion 71 is sandwiched between the head 41 and the caliper 3, the protruding portion 712 is brought into the caliper 3. The biting force increases the frictional force between the mounting portion 71 and the caliper 3. Thereby, rotation of the protection member 7 is suppressed and it can suppress that the screwing state of the slide pin 4 and the caliper 3 loosens.
　また、第一実施形態の保護部材７は、板状部材で構成されているため、薄型で小型化しやすく、軽量化の観点でも有利である。また、２か所の位置を同時に合わせる必要がなく、保護部材７の取り付け作業も容易となる。また、保護部材７が分離しているため、保護部材７間で応力が発生せず、耐久性の面でも優れている。 Further, since the protective member 7 of the first embodiment is composed of a plate-like member, it is thin and easy to miniaturize, which is advantageous from the viewpoint of weight reduction. Further, it is not necessary to match the positions of the two locations at the same time, and the work for attaching the protective member 7 is facilitated. Further, since the protective member 7 is separated, no stress is generated between the protective members 7, and the durability is excellent.
＜第二実施形態＞
　第二実施形態のディスクブレーキ装置は、装着部７１の構成の点で第一実施形態と異なっている。したがって、異なっている部分について説明する。第二実施形態の説明において、第一実施形態の説明及び図面を参照することができる。図１３は、第二実施形態のロータ回出側の保護部材７を表している。 <Second embodiment>
The disc brake device of the second embodiment differs from the first embodiment in the configuration of the mounting portion 71. Therefore, a different part is demonstrated. In the description of the second embodiment, reference can be made to the description of the first embodiment and the drawings. FIG. 13 shows the protection member 7 on the rotor delivery side of the second embodiment.
　第二実施形態の装着部７１は、図１３に示すように、基板部位７１１と、基板部位７１１の両面（ロータ軸方向の両面）に形成された突出部位７１２と、を備えている。一方側に形成された複数の突出部位７１２は、基板部位７１１のアウタ側端面（キャリパ３側の端面）からキャリパ３に向けて突出した部位であり、基板部位７１１のアウタ側端面上に放射状に形成されている。他方側に形成された複数の突出部位７１２は、基板部位７１１のインナ側端面（頭部４１側の端面）から頭部４１に向けて突出した部位であり、基板部位７１１のインナ側端面上に放射状に形成されている。各突出部位７１２は先端部がエッジ形状（例えば三角形状の頂点）となっている。なお、一方の突出部位７１２については、他方の突出部位７１２と同様の構成であるため図示は省略する。複数の突出部位７１２は、基板部位７１１に放射状に延びる複数の凹部（溝）を形成する部位ともいえる。 As shown in FIG. 13, the mounting portion 71 of the second embodiment includes a substrate portion 711 and projecting portions 712 formed on both surfaces (both surfaces in the rotor axial direction) of the substrate portion 711. The plurality of projecting portions 712 formed on one side are portions projecting from the outer side end surface (end surface on the caliper 3 side) of the substrate portion 711 toward the caliper 3, and radiate on the outer side end surface of the substrate portion 711. Is formed. The plurality of projecting portions 712 formed on the other side are portions projecting from the inner side end surface (end surface on the head 41 side) of the substrate portion 711 toward the head 41, and on the inner side end surface of the substrate portion 711. It is formed radially. Each protruding portion 712 has an edge shape (for example, a triangular apex) at the tip. In addition, about one protrusion part 712, since it is the structure similar to the other protrusion part 712, illustration is abbreviate | omitted. It can be said that the plurality of projecting portions 712 form a plurality of concave portions (grooves) extending radially in the substrate portion 711.
　第二実施形態によれば、第一実施形態同様、第一突出部位７１２ａとキャリパ３との間の摩擦力が大きくなるため、緩み抑制効果が発揮される。さらに第二実施形態によれば、第二突出部位７１２ｂと頭部４１との間の摩擦力も大きくなるため、より大きな緩み抑制効果が発揮される。 According to the second embodiment, as in the first embodiment, since the frictional force between the first projecting portion 712a and the caliper 3 is increased, a loosening suppression effect is exhibited. Furthermore, according to the second embodiment, since the frictional force between the second protruding portion 712b and the head 41 is also increased, a greater loosening suppression effect is exhibited.
（その他）
　本発明は、上記実施形態に限られない。例えば、ディスクブレーキ装置が、ロータ回入側に位置するスライドピン４に対して装着される第１保護部材７と、ロータ回出側に位置するスライドピン４に対して装着される第２保護部材７と、を備えており、当該第１保護部材７の形状と第２保護部材７の形状が同一であっても良い。この場合、例えば、装着部７１に位置決め部７３に代えて第二の保護部７２を形成し、キャリパ３のうち第二の保護部７２に対応する部位に第二の保護部７２の先端部を収容する凹部を形成しても良い。左右対称に形成された２つの保護部７２を有する保護部材７は、ロータ回入側とロータ回出側の両方に装着可能であり、保護部材７の共通化、すなわち部品点数の削減が可能となる。この場合、保護部７２が位置決め機能も発揮する。また、保護部７２は、例えば円筒の一部分のように、全体に湾曲していても良い。また、保護部７２は、第二板状部７２２のように少なくとも２方向を保護できることが好ましく、平板部材を用いる場合は１以上（１つ又は複数）の湾曲部を有することが好ましい。 (Other)
The present invention is not limited to the above embodiment. For example, the first protection member 7 is mounted on the slide pin 4 positioned on the rotor turn-in side and the second protection member is mounted on the slide pin 4 positioned on the rotor turn-out side. 7, and the shape of the first protection member 7 and the shape of the second protection member 7 may be the same. In this case, for example, a second protection part 72 is formed in the mounting part 71 instead of the positioning part 73, and the tip part of the second protection part 72 is placed in a part corresponding to the second protection part 72 in the caliper 3. You may form the recessed part to accommodate. The protection member 7 having two protection portions 72 formed symmetrically can be mounted on both the rotor turn-in side and the rotor turn-out side, and the protection member 7 can be shared, that is, the number of parts can be reduced. Become. In this case, the protection part 72 also exhibits a positioning function. Moreover, the protection part 72 may be curving to the whole like a part of cylinder, for example. Moreover, it is preferable that the protection part 72 can protect at least 2 directions like the 2nd plate-shaped part 722, and when using a flat plate member, it is preferable to have 1 or more (one or more) curved parts.
　また、ピンブーツ５の他端部は、アーム部３２に固定されても良い。また、スライドピン４は、例えば特開２００５－２２０９４２号公報に記載のように、複数の部材で構成されても良い。スライドピン４は、例えば、キャリパ３に螺合されるボルト部材と、ボルト部材の先端部に螺合されるスライド部材と、を備えても良い。この場合、ボルト部材のキャリパ３に螺合される部位が螺合部位４２１に相当し、スライド部材がスライド部位４２２に相当する。このような構成であっても、上記実施形態同様の効果が発揮される。また、この場合、係合部４２２ａは、スライド部材の外周面から環状に突出した突出部であっても良い。 Further, the other end portion of the pin boot 5 may be fixed to the arm portion 32. The slide pin 4 may be composed of a plurality of members as described in, for example, Japanese Patent Application Laid-Open No. 2005-220942. The slide pin 4 may include, for example, a bolt member that is screwed to the caliper 3 and a slide member that is screwed to the distal end portion of the bolt member. In this case, the part screwed into the caliper 3 of the bolt member corresponds to the screwing part 421, and the slide member corresponds to the slide part 422. Even if it is such a structure, the effect similar to the said embodiment is exhibited. In this case, the engaging portion 422a may be a protruding portion that protrudes in an annular shape from the outer peripheral surface of the slide member.
　また、保護部材７は、ロータ回入側に位置するスライドピン４及びロータ回出側に位置するスライドピン４の何れか一方に対して装着されても良い。例えば、比較的異物が進入しやすいロータ回入側のスライドピン４に対してのみ保護部材７を設置しても良い。また、本発明は、キャリパ３とマウント２の間にピンブーツ５がない場合やピンブーツ５以外の部材が配置されている場合でも適用可能である。 Further, the protection member 7 may be attached to either the slide pin 4 located on the rotor turn-in side or the slide pin 4 located on the rotor turn-out side. For example, the protective member 7 may be provided only for the slide pin 4 on the rotor turn-in side where foreign objects are relatively easy to enter. Further, the present invention is applicable even when the pin boot 5 is not provided between the caliper 3 and the mount 2 or when a member other than the pin boot 5 is disposed.

Claims (4)

  1. 　キャリパに固定されたスライドピンがマウントに設けられたピンガイド孔に挿入された状態で、前記キャリパが前記マウントに対してロータの軸方向にスライド可能に支持されて構成されたディスクブレーキ装置において、
    　前記ロータの回入側に位置する前記スライドピン及び前記ロータの回出側に位置する前記スライドピンのそれぞれに対して別個に装着され、又は前記ロータの回入側に位置する前記スライドピン及び前記ロータの回出側に位置する前記スライドピンの何れか一方に対して装着される保護部材を備え、
    　前記スライドピンは、前記キャリパの外部に配置される頭部と、前記頭部から延びる軸部と、を有し、
    　前記軸部は、前記キャリパに螺合される螺合部位と、前記ピンガイド孔に挿通可能に形成されたスライド部位と、を有し、
    　前記保護部材は、前記軸部が挿通された状態で前記頭部と前記キャリパとにより挟持される装着部と、前記装着部から延設され、前記キャリパと前記マウントの間に位置する前記スライド部位の外周側に配置された保護部と、を備えるディスクブレーキ装置。     In the disc brake device configured such that the caliper is slidably supported in the axial direction of the rotor with respect to the mount in a state where a slide pin fixed to the caliper is inserted into a pin guide hole provided in the mount,
    The slide pin positioned on the rotor entry side and the slide pin located on the rotor delivery side are mounted separately, or the slide pin located on the rotor entry side and A protective member attached to any one of the slide pins located on the delivery side of the rotor;
    The slide pin has a head disposed outside the caliper, and a shaft portion extending from the head.
    The shaft portion has a screwing portion screwed into the caliper, and a slide portion formed so as to be able to be inserted into the pin guide hole,
    The protective member includes a mounting portion that is sandwiched between the head and the caliper in a state where the shaft portion is inserted, and the sliding portion that extends from the mounting portion and is positioned between the caliper and the mount. A disc brake device comprising: a protective portion disposed on an outer peripheral side of the disc brake device.
  2. 　前記保護部材は、前記キャリパに対して前記軸部の中心軸を中心とした回転方向に前記装着部を係合させる位置決め部を備える請求項１に記載のディスクブレーキ装置。 2. The disc brake device according to claim 1, wherein the protective member includes a positioning portion that engages the mounting portion in a rotation direction around the central axis of the shaft portion with respect to the caliper.
  3. 　前記装着部は、環状の基板部位と、前記基板部位から前記キャリパに向けて突出する突出部位と、を有する請求項１又は２に記載のディスクブレーキ装置。 3. The disc brake device according to claim 1, wherein the mounting portion includes an annular substrate portion and a protruding portion protruding from the substrate portion toward the caliper.
  4. 　前記ロータの回入側に位置する前記スライドピンに対して装着される前記保護部材である第１保護部材と、
    　前記ロータの回出側に位置する前記スライドピンに対して装着される前記保護部材である第２保護部材と、
    　を備え、
    　前記第１保護部材の形状と前記第２保護部材の形状は、同一である請求項１～３の何れか一項に記載のディスクブレーキ装置。     A first protection member that is the protection member attached to the slide pin located on the rotor entrance side;
    A second protective member that is the protective member attached to the slide pin located on the outlet side of the rotor;
    With
    The disc brake device according to any one of claims 1 to 3, wherein a shape of the first protection member and a shape of the second protection member are the same.
PCT/JP2017/039208 2016-10-31 2017-10-31 Disc brake device WO2018079795A1 (en)

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JP2016213159A JP6547722B2 (en) 2016-10-31 2016-10-31 Disc brake device

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006194315A (en) * 2005-01-12 2006-07-27 Toyota Motor Corp Disc brake device
JP2009222171A (en) * 2008-03-18 2009-10-01 Caterpillar Japan Ltd Disc brake device of working vehicle
WO2013080381A1 (en) * 2011-12-02 2013-06-06 トヨタ自動車株式会社 Disc-brake device and calipers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006194315A (en) * 2005-01-12 2006-07-27 Toyota Motor Corp Disc brake device
JP2009222171A (en) * 2008-03-18 2009-10-01 Caterpillar Japan Ltd Disc brake device of working vehicle
WO2013080381A1 (en) * 2011-12-02 2013-06-06 トヨタ自動車株式会社 Disc-brake device and calipers

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