WO2021131973A1 - Frein à disque - Google Patents

Frein à disque Download PDF

Info

Publication number
WO2021131973A1
WO2021131973A1 PCT/JP2020/046980 JP2020046980W WO2021131973A1 WO 2021131973 A1 WO2021131973 A1 WO 2021131973A1 JP 2020046980 W JP2020046980 W JP 2020046980W WO 2021131973 A1 WO2021131973 A1 WO 2021131973A1
Authority
WO
WIPO (PCT)
Prior art keywords
pad
rotor
disc
pair
pads
Prior art date
Application number
PCT/JP2020/046980
Other languages
English (en)
Japanese (ja)
Inventor
義季 岩橋
Original Assignee
日立Astemo株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日立Astemo株式会社 filed Critical 日立Astemo株式会社
Priority to JP2021567343A priority Critical patent/JP7241922B2/ja
Priority to DE112020006321.6T priority patent/DE112020006321T5/de
Priority to CN202080089766.5A priority patent/CN114901963A/zh
Publication of WO2021131973A1 publication Critical patent/WO2021131973A1/fr

Links

Images

Classifications

    • 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
    • F16D55/228—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 separate actuating member for each side
    • 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
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • F16D65/095—Pivots or supporting members therefor
    • 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
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • F16D65/095—Pivots or supporting members therefor
    • F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
    • F16D65/0973—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces
    • F16D65/0974—Resilient means interposed between pads and supporting members or other brake parts not subjected to brake forces acting on or in the vicinity of the pad rim in a direction substantially transverse to the brake disc axis
    • F16D65/0977—Springs made from sheet metal
    • 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
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0016—Brake calipers

Definitions

  • the present invention relates to a disc brake for braking a vehicle such as a two-wheeled vehicle or a four-wheeled vehicle.
  • a vehicle such as a two-wheeled vehicle or a four-wheeled vehicle.
  • the present application claims priority based on Japanese Patent Application No. 2019-233896 filed in Japan on December 25, 2019, the contents of which are incorporated herein by reference.
  • Some disc brakes have a structure in which a space that opens in the rotor radial direction is provided in the caliper body and pads are arranged in this space (see, for example, Patent Document 1 below).
  • Disc brakes are required to be miniaturized.
  • an object of the present invention is to provide a disc brake that can be miniaturized.
  • the disc brake according to the first aspect includes a pair of pads for pressing the disc rotor; a pad assembly space arranged straddling the disc rotor and opening in the rotor radial direction, and a pad assembly space.
  • a caliper body having a pair of pad sliding portions that slidably support the pair of pads in the rotor axial direction; on both sides in the rotor axial direction; The total length of either one of the pad sliding portions and the pad assembling space is shorter than the thickness of two of the pads, and the disc rotor side of one of the pair of pad sliding portions.
  • the disc brake according to the second aspect includes a pair of pads for pressing the disc rotor; a pad assembly space arranged straddling the disc rotor and opening in the rotor radial direction, and a pad assembly space.
  • a caliper body having a pair of pad sliding portions that slidably support the pair of pads in the rotor axial direction on both sides in the rotor axial direction; The total length of either one of the pad sliding portions and the pad assembling space is shorter than the thickness of two of the pads, and the disc rotor side of one of the pair of pad sliding portions.
  • FIG. 1 It is a top view which shows the disc brake which concerns on one Embodiment of this invention. It is a figure which looked at the disc brake of the same embodiment from the arrow view II of FIG. It is a figure which looked at the disc brake of the same embodiment from the arrow view III of FIG. It is a bottom view which shows the disc brake of the same embodiment. It is sectional drawing which looked at the disc brake of the same embodiment by VV line of FIG. It is a figure which looked at the disc brake of the same embodiment from the arrow view VI of FIG. It is a figure which looked at the disc brake of the same embodiment from the arrow view VII of FIG. It is a top view which shows the relationship between the pad and the main part of the caliper body of the disc brake of the same embodiment.
  • the disc brake 10 of the present embodiment is an opposed piston type disc brake used for front wheel braking of a motorcycle.
  • the present invention is not limited to this, and of course, it can be applied to, for example, a disc brake for rear wheel braking of a motorcycle or a disc brake for braking a four-wheeled vehicle.
  • the disc brake 10 of the present embodiment includes a caliper 12 that imparts frictional resistance to a disc-shaped disc rotor 11 that rotates together with a wheel (not shown) that is a braking target.
  • the caliper 12 is attached to the vehicle body side.
  • the radial direction of the disc rotor 11 is referred to as the rotor radial direction
  • the central axis of the disc rotor 11 is referred to as the rotor axis
  • the extending direction of the rotor axis is referred to as the rotor axial direction.
  • the direction of rotation (circumferential direction) is called the rotor rotation direction.
  • the inlet side in the rotation direction R of the disc rotor 11 when the vehicle is moving forward is referred to as a rotor entry side
  • the exit side is referred to as a rotor exit side.
  • the center side of the disc rotor 11 in the rotor radial direction is referred to as the inside in the rotor radial direction, and the side opposite to the center of the disc rotor 11 is referred to as the outside in the rotor radial direction.
  • the side opposite to the wheels in the rotor axis direction is referred to as the outer side, and the wheel side (inside in the vehicle width direction) is referred to as the inner side.
  • the caliper 12 includes a caliper main body 15 arranged so as to straddle the outer peripheral side of the disc rotor 11 and fixed to the vehicle body side, and a pair of pistons 16 housed in the caliper main body 15 and having the same shape as each other as shown in FIG. , A pair of pistons 17 housed in the caliper body 15 and having the same shape as each other.
  • the piston 16 and the piston 17 have the same shape as each other.
  • the pair of pistons 16 and the pair of pistons 17 have their respective central axes aligned with the rotor axis direction, and are all arranged at equidistant positions from the rotor axis.
  • a line that passes through the rotor axis of the disc rotor 11 and the center of the caliper body 15 in the rotor rotation direction and along the rotor radial direction is referred to as a radial reference line.
  • the extending direction of this radial reference line is referred to as the reference line direction.
  • the radial reference line is orthogonal to the rotor axis.
  • the caliper body 15 has a mirror-symmetrical shape with respect to a surface including a rotor axis and a radial reference line.
  • the caliper 12 is provided with a pair of pistons 16 on both sides in the rotor axial direction with respect to the disc rotor 11 so as to align the positions in the rotor radial direction and the rotor rotation direction. Further, the caliper 12 is provided with a pair of pistons 17 on both sides in the rotor axial direction with respect to the disc rotor 11 so as to align the positions in the rotor radial direction and the rotor rotation direction.
  • the pair of pistons 16 are provided on the disc feeding side of the pair of pistons 17.
  • the pair of pistons 16 and the pair of pistons 17 are arranged at positions equidistant from the center of the caliper body 15 in the rotor rotation direction, in other words, at positions equidistant from the radial reference line.
  • the caliper 12 is provided with one piston 16 and one piston 17 arranged side by side at a predetermined interval in the rotor rotation direction on one side of the disc rotor 11 in the rotor axial direction. Then, such a configuration is provided on both sides in the rotor axial direction so as to face each other. Therefore, the caliper 12 is an opposed piston type 4-pot caliper.
  • the number of pistons may be at least one pair with the disc rotor 11 interposed therebetween, and may be three pairs or four pairs in addition to the above two pairs. Further, the number of pistons may be different from each other between both sides of the disc rotor 11 in the rotor axial direction, such as a combination of one and two, or a combination of two and three. Further, the diameters of the pistons may be different from each other between the rotor turning side and the rotor turning side.
  • the caliper main body 15 includes an outer cylinder portion 21 arranged on the outer side of the disc rotor 11 in the rotor axial direction, and an inner cylinder portion 22 arranged on the inner side of the disc rotor 11.
  • the outlet side connecting portion 23 that connects the ends of the outer cylinder portion 21 and the inner cylinder portion 22 on the rotor return side, and the rotor entry side of the outer cylinder portion 21 and the inner cylinder portion 22. It has a turn-in side connecting portion 24 for connecting the end portions, and an intermediate connecting portion 25 for connecting the intermediate portions of the outer side cylinder portion 21 and the inner side cylinder portion 22 in the rotor rotation direction.
  • the feeding side connecting portion 23, the feeding side connecting portion 24, and the intermediate connecting portion 25 are all arranged so as to straddle the disc rotor 11 on the outer side in the rotor radial direction.
  • the caliper body 15 connects the outer cylinder portion 21 and the inner cylinder portion 22 across the disc rotor 11 at the ends of the pair of outer cylinder portions 21 and the inner cylinder portions 22 in the rotor rotation direction.
  • It has an intermediate connecting portion 25 that connects 21 and an inner cylinder portion 22;
  • the caliper body 15 is a monoblock caliper in which the outer side cylinder part 21, the inner side cylinder part 22, the feeding side connecting part 23, the turning side connecting part 24, and the intermediate connecting part 25 are formed of an integral casting. Therefore, the outer side cylinder portion 21 and the inner side cylinder portion 22 are integrally formed via the feeding side connecting portion 23, the turning side connecting portion 24, and the intermediate connecting portion 25.
  • the outer cylinder portion 21 is arranged so as to face the outer side surface of the disc rotor 11.
  • the outer cylinder portion 21 has a mounting boss portion 34 arranged on the rotation side connecting portion 23 side, which is one end in the rotor rotation direction, and the other end in the rotor rotation direction. It has a mounting boss portion 35 arranged on the entry side connecting portion 24 side.
  • the outer cylinder portion 21 has a long shape along the rotor rotation direction in order to accommodate the plurality of pistons 16 and 17 side by side in the rotor rotation direction.
  • the outer cylinder portion 21 is formed with two cylinder bores 38 and 39 that accommodate the pistons 16 and 17 so as to be movable along the rotor axial direction, side by side in the rotor rotation direction.
  • the cylinder bores 38 and 39 have the same diameter as each other and are formed along the rotor axial direction.
  • the cylinder bores 38 and 39 are arranged such that the cylinder bore 38 accommodating the piston 16 is arranged on the exit side connecting portion 23 side in the rotor rotation direction and the cylinder bore 39 accommodating the piston 17 is arranged on the enter side connecting portion 24 side in the rotor rotation direction. Has been done.
  • the cylinder bores 38 and 39 are open on the disc rotor 11 side and closed on the side opposite to the disc rotor 11 in the rotor axial direction.
  • the cylinder bores 38 and 39 are arranged equidistant from the center of the caliper main body 15 in the rotor rotation direction, in other words, equidistant from the radial reference line.
  • a supply / discharge port 41 is formed at the center position of the outer cylinder portion 21 in the rotor rotation direction.
  • the supply / discharge port 41 supplies / discharges the brake fluid to the cylinder bores 38 and 39 shown in FIG.
  • the air supply / discharge port 41 is formed parallel to the radial reference line.
  • a mount hole 44 is formed in the mounting boss portion 34 so as to penetrate in the rotor radial direction.
  • a mounting hole 45 is formed in the mounting boss portion 35 so as to penetrate in the rotor radial direction.
  • These mount holes 44 and 45 are parallel to the radial reference line, and are equidistant from the center of the caliper body 15 in the rotor rotation direction, in other words, equidistant from the radial reference line. It is formed by aligning the positions in the directions.
  • the caliper 12 is a so-called radial mount type that is fixed to the vehicle body side by mounting bolts (not shown) that are inserted into these mount holes 44 and 45.
  • a bleeder boss portion 49 to which a bleeder plug 48 for bleeding air is attached is formed on the feeding side connecting portion 23.
  • the caliper main body 15 is arranged on the rear side of the disc rotor 11 in the vehicle front-rear direction with the feeding side connecting portion 23 on which the bleeder boss portion 49 is formed is arranged on the upper side in the vertical direction. Therefore, when the vehicle is traveling forward, the disc rotor 11 moves from the bottom to the top in the vertical direction with respect to the caliper main body 15.
  • the inner cylinder portion 22 is arranged so as to face the inner side surface of the disc rotor 11. As shown in FIG. 3, the inner cylinder portion 22 has a long shape along the rotor rotation direction in order to accommodate the plurality of pistons 16 and 17 side by side in the rotor rotation direction.
  • the inner cylinder portion 22 is formed with two cylinder bores 58 and 59, which accommodate the pistons 16 and 17 so as to be movable in the rotor axial direction, side by side in the rotor rotation direction.
  • the cylinder bore 58 accommodating the piston 16 is arranged on the rotation side connecting portion 23 side in the rotor rotation direction.
  • the cylinder bore 59 accommodating the piston 17 is arranged on the entry side connecting portion 24 side in the rotor rotation direction.
  • the cylinder bores 58 and 59 are open on the disc rotor 11 side in the rotor axial direction, and the side opposite to the disc rotor 11 is closed.
  • the cylinder bores 58 and 59 are arranged equidistant from the center of the caliper main body 15 in the rotor rotation direction, in other words, equidistant from the radial reference line.
  • the outer cylinder portion 21 shown in FIGS. 1, 2, 4, and 6 and the inner cylinder portion 22 shown in FIGS. 1, 3, 4, and 6 are in the rotor rotation direction of each other. And the positions in the rotor radial direction are overlapped and arranged so as to face each other in the rotor axial direction.
  • the cylinder bore 38 shown in FIG. 2 is formed coaxially with the cylinder bore 58 shown in FIG.
  • the cylinder bore 39 shown in FIG. 2 is formed coaxially with the cylinder bore 59 shown in FIG.
  • the turn-out side connecting portion 23 has a pad sliding portion 32A, a pad sliding portion 33B, and a support connecting portion 51 on the turn-in side connecting portion 24 side in the rotor rotation direction. ..
  • the pad sliding portion 32A is arranged on the outer side of the disc rotor 11.
  • the pad sliding portion 33B is arranged on the inner side of the disc rotor 11.
  • the support connecting portion 51 is provided between the pad sliding portion 32A and the pad sliding portion 33B so as to connect them.
  • the pad sliding portion 32A and the pad sliding portion 33B have a mirror-symmetrical shape.
  • the turn-in side connecting portion 24 has a pad sliding portion 32B and a pad sliding portion 33A on the turn-out side connecting portion 23 side in the rotor rotation direction.
  • the pad sliding portion 33A is arranged on the outer side of the disc rotor 11.
  • the pad sliding portion 32B is arranged on the inner side of the disc rotor 11.
  • the pad sliding portion 33A and the pad sliding portion 32B have a mirror-symmetrical shape.
  • the caliper main body 15 has a pad assembling space 52 that penetrates between the pad sliding portion 33A and the pad sliding portion 33B in the rotor radial direction.
  • the pad assembly space 52 is open to the outside and inside in the rotor radial direction and to the rotor rotation side.
  • the caliper main body 15 is provided with a pair of pad sliding portions 33A and 32B on both sides of the pad assembly space 52 in the rotor axial direction.
  • the feeding side connecting portion 23 has pad sliding portions 32A and 33B on both sides of the disc rotor 11 in the rotor axial direction.
  • the entry-side connecting portion 24 has pad sliding portions 32B and 33A on both sides of the disc rotor 11 in the rotor axial direction.
  • the feeding side connecting portion 23 and the turning side connecting portion 24 are provided with four pad sliding portions 32A, 33B, 32B, 33A.
  • the feeding side connecting portion 23 has a supporting connecting portion 51 in which the disc rotor 11 and the position in the rotor axial direction are overlapped with each other.
  • the entry-in side connecting portion 24 has a pad assembly space 52 in which the disc rotor 11 and the position in the rotor axial direction are overlapped with each other.
  • the pad sliding portions 32A and 33B and the support connecting portion 51 are arranged on the rotor rotation side with respect to the pad sliding portions 32B and 33A.
  • the pad sliding portion 32A, the support connecting portion 51, and the pad sliding portion 33B are continuous in the rotor axial direction by superimposing the positions in the rotor rotation direction and the rotor radial direction.
  • the pad sliding portion 33A and the pad sliding portion 32B face each other in the rotor axial direction by overlapping the positions in the rotor rotation direction and the rotor radial direction.
  • the disc rotor 11 is arranged between the pad sliding portion 32A and the pad sliding portion 33A and the pad sliding portion 32B and the pad sliding portion 33B.
  • the support connecting portion 51 connects the pad sliding portion 32A and the pad sliding portion 33B on the outer side in the rotor radial direction of the disc rotor 11.
  • the pad assembly space 52 is arranged between the pad sliding portion 32B and the pad sliding portion 33A on the outer side in the rotor radial direction of the disc rotor 11.
  • the caliper body 15 is surrounded by an outer cylinder portion 21, an inner cylinder portion 22, pad sliding portions 32A, 32B, 33A, 33B and a support connecting portion 51, and opens substantially in the center on both sides in the rotor radial direction.
  • a pad arrangement space 61 is formed.
  • the entire pad arrangement space 61 is open inside in the radial direction of the rotor.
  • the intermediate connecting portion 25 is provided at the center position of the caliper main body 15 in the rotor rotation direction.
  • the intermediate connecting portion 25 is provided with a pad arrangement space 61 straddling the rotor axial direction on the outer side in the rotor radial direction.
  • the outer side of the pad arrangement space 61 in the rotor radial direction is the pad sliding portions 32A and 33B on the rotor rotating side and the portion between the support connecting portion 51 and the intermediate connecting portion 25; the pad sliding portion on the rotor rotating side.
  • the portion between 33A and 32B and the intermediate connecting portion 25; is open.
  • the pad assembly space 52 between the pad sliding portion 33A and the pad sliding portion 32B opens into the pad arrangement space 61 and is connected to the pad arrangement space 61.
  • the pad assembly space 52 has a shape that is recessed from the center of the pad arrangement space 61 in the rotor axial direction toward the rotor entry side.
  • the cylinder bores 38, 39, 58, 59 shown in FIGS. 2 and 3 are open to the pad arrangement space 61 shown in FIG.
  • the disc rotor 11 crosses the central position of the pad arrangement space 61 in the rotor axial direction in the rotor rotation direction.
  • the outer side cylinder portion 21, the inner side cylinder portion 22, the feeding side connecting portion 23, the turning side connecting portion 24, and the intermediate connecting portion 25 shown in FIG. 1 are on the inner side shown in FIG.
  • the cylinder portions 22 are integrally molded by casting. Then, the inner surfaces of the cylinder bores 38, 39, 58, 59 are machined through the cast openings at the bottoms of the two cylinder bores 58, 59 of the inner cylinder portion 22.
  • the caliper main body 15 is formed by joining a separate closing member to the opening at the bottom of the cylinder bores 58 and 59 of the inner cylinder portion 22 by friction stir welding to close the opening and form the bottom. Will be done.
  • the outer cylinder portion 21, the inner cylinder portion 22, the feeding side connecting portion 23, the turning side connecting portion 24, and the intermediate connecting portion 25 are integrally molded by casting, and further, the outer cylinder portion 21 and the outer connecting portion 21 and the intermediate connecting portion 25 are integrally molded.
  • the inner surface of the cylinder bores 38, 39, 58, 59 may be machined from the pad arrangement space 61 between the inner cylinder portions 22.
  • the pad sliding portion 32B on the inner side of the entry side connecting portion 24 includes a torque receiving surface 71B facing the pad arrangement space 61 side and a rotor facing surface 72B facing the disc rotor 11 side.
  • a locking surface portion 73B that faces the rotor radial direction and the rotor rotation side is formed.
  • the torque receiving surface 71B is a flat surface extending parallel to the radial reference line, and extends parallel to the rotor axis.
  • the torque receiving surface 71B forms a pad arrangement space 61.
  • the rotor facing surface 72B forms a pad assembly space 52.
  • the rotor facing surface 72B extends perpendicular to the rotor axis.
  • the locking surface portion 73B is a flat surface extending parallel to the rotor axis, and is inclined so as to be farther from the radial reference line toward the outside in the rotor radial direction in the reference line direction.
  • the locking surface portion 73B and the torque receiving surface 71B intersect at an obtuse angle.
  • the entry-side connecting portion 24 is formed with a wall surface portion 74B that rises outward from the inner edge of the locking surface portion 73B in the rotor radial direction and toward the rotor rotation side.
  • the wall surface portion 74B extends substantially orthogonal to the rotor axis.
  • the support connecting portion 51 of the feeding side connecting portion 23 is formed with a locking surface portion 53 that is outward in the rotor radial direction and faces the rotor turning side.
  • the locking surface portion 53 is a flat surface extending parallel to the rotor axis, and is inclined so as to be farther from the radial reference line toward the outside in the rotor radial direction in the reference line direction.
  • the pad sliding portion 33B on the inner side of the feeding side connecting portion 23 has a torque receiving surface 81B facing the pad arrangement space 61 side and a rotor facing surface 82B facing the disc rotor 11 side. It is formed. Further, as shown in FIG. 1, the pad sliding portion 33B is formed with a locking surface portion 83B facing outward in the rotor radial direction.
  • the torque receiving surface 81B shown in FIG. 5 is a flat surface extending parallel to the radial reference line, and extends parallel to the rotor axis.
  • the torque receiving surface 81B forms a pad arrangement space 61.
  • the locking surface portion 83B shown in FIG. 1 is arranged on the same plane as the locking surface portion 53 of the support connecting portion 51.
  • the locking surface portion 83B is also a flat surface extending parallel to the rotor axis, facing the rotor radial direction outer side and the rotor turning side, and the rotor radial direction outer side is separated from the radial reference line in the reference line direction. It is tilted.
  • the locking surface portion 83B and the torque receiving surface 81B intersect at an obtuse angle. This crossing angle is equivalent to the angle formed by the locking surface portion 73B and the torque receiving surface 71B.
  • the rotation side connecting portion 23 is formed with a wall surface portion 84B that rises outward in the rotor radial direction from the end edge portion on the inner side of the locking surface portion 83B.
  • the wall surface portion 84B extends substantially orthogonal to the rotor axis.
  • an intermediate wall surface portion 86B facing the pad arrangement space 61 side is formed between the pad sliding portions 32B and 33B on the inner side.
  • the intermediate wall surface portion 86B has a planar shape extending orthogonal to the rotor axis, and forms a pad arrangement space 61.
  • the pad sliding portion 33A on the outer side of the entry side connecting portion 24 has a torque receiving surface 81A facing the pad arrangement space 61 side, a rotor facing surface 82A facing the disc rotor 11 side, and a rotor facing surface facing outward in the rotor radial direction.
  • a locking surface portion 83A is formed.
  • the torque receiving surface 81A is a flat surface extending parallel to the radial reference line, and extends parallel to the rotor axis.
  • the torque receiving surface 81A forms a pad arrangement space 61.
  • the rotor facing surface 82A forms a pad assembly space 52.
  • the torque receiving surface 81A is arranged on the same plane as the torque receiving surface 71B.
  • the rotor facing surface 82A extends perpendicular to the rotor axis.
  • the locking surface portion 83A is a flat surface extending parallel to the rotor axis, and is arranged on the same plane as the locking surface portion 73B. Therefore, the locking surface portion 83A is also oriented outward in the rotor radial direction and toward the rotor rotation side, and is inclined so as to be farther from the radial reference line toward the outer side in the rotor radial direction in the reference line direction.
  • the locking surface portion 83A and the torque receiving surface 81A intersect at an obtuse angle. This crossing angle is equivalent to the angle formed by the locking surface portion 73B and the torque receiving surface 71B.
  • the entry-side connecting portion 24 is formed with a wall surface portion 84A that rises outward from the outer edge of the locking surface portion 83A in the rotor radial direction and toward the rotor rotation side.
  • the wall surface portion 84A extends substantially orthogonal to the rotor axis and faces the wall surface portion 74B.
  • the rotor facing surface 82A and the rotor facing surface 72B face each other in the rotor axial direction by aligning the positions in the rotor radial direction and the rotor rotation direction.
  • the entry-in side connecting portion 24 is formed with an intermediate surface 88 forming a pad assembly space 52 between the rotor facing surface 82A and the rotor facing surface 72B.
  • the intermediate surface 88 is a flat surface extending parallel to the radial reference line, and extends parallel to the rotor axis.
  • the pad sliding portion 32A on the outer side of the feeding side connecting portion 23 includes a torque receiving surface 71A facing the pad arrangement space 61 side and a rotor facing surface 72A facing the disc rotor 11 side. It is formed. Further, as shown in FIG. 1, the pad sliding portion 32A is formed with a locking surface portion 73A facing outward in the rotor radial direction.
  • the torque receiving surface 71A is a flat surface extending parallel to the radial reference line, and extends parallel to the rotor axis.
  • the torque receiving surface 71A is arranged on the same plane as the torque receiving surface 81B.
  • the torque receiving surface 71A forms a pad arrangement space 61.
  • the locking surface portion 73A is arranged on the same plane as the locking surface portion 53 and the locking surface portion 83B. Therefore, the locking surface portion 73A is a flat surface extending parallel to the rotor axis.
  • the locking surface portion 73A is oriented outward in the rotor radial direction and toward the rotor entry side, and is inclined so as to be farther from the radial reference line toward the outer side in the rotor radial direction in the reference line direction.
  • the locking surface portion 73A and the torque receiving surface 71A intersect at an obtuse angle. This intersection angle is the same as the angle formed by the locking surface portion 73B and the torque receiving surface 71B.
  • the rotation side connecting portion 23 is formed with a wall surface portion 74A that rises from the outer edge portion of the locking surface portion 73A on the outer side in the rotor radial direction and on the rotor entry side.
  • the wall surface portion 74A extends substantially orthogonal to the rotor axis and faces the wall surface portion 84B.
  • an intermediate wall surface portion 86A facing the pad arrangement space 61 side is formed between the pad sliding portions 32A and 33A on the outer side.
  • the intermediate wall surface portion 86A has a planar shape extending orthogonal to the rotor axis, and forms a pad arrangement space 61.
  • the intermediate wall surface portion 86A aligns the positions in the rotor radial direction and the rotor rotation direction with the intermediate wall surface portion 86B and faces the rotor axial direction.
  • a pad spring 101 is locked to the intermediate connecting portion 25 and attached to the caliper main body 15.
  • the caliper main body 15 supports a pair of pads 102 having the same shape as each other by the pad spring 101. These pads 102 are arranged to face the disc rotor 11.
  • One pad 102 is arranged between the outer cylinder portion 21 and the disc rotor 11.
  • the other pad 102 is arranged between the inner cylinder portion 22 and the disc rotor 11.
  • the pad spring 101 is formed by punching and bending a plate material having a constant thickness by press molding.
  • the pad spring 101 includes a substrate portion 111 shown in FIG. 5, an engaging plate portion 112, an engaging plate portion 113, a pair of extending plate portions 114, 115 shown in FIG. 1, and a pair of extending plate portions 116, 117. And a connecting plate portion 118 and a connecting plate portion 119.
  • the substrate portion 111 shown in FIG. 5 is arranged between the intermediate connecting portion 25 and the pair of pads 102 and is in contact with the intermediate connecting portion 25.
  • the engaging plate portion 112 extends outward in the rotor radial direction from the end edge portion on the rotor rotation side of the substrate portion 111 and engages with the intermediate connecting portion 25.
  • the engaging plate portion 113 extends outward in the rotor radial direction from the end edge portion on the rotor entry side of the substrate portion 111 and engages with the intermediate connecting portion 25. As a result, the engaging plate portions 112 and 113 sandwich the intermediate connecting portion 25. As a result, the pad spring 101 is attached to the caliper body 15.
  • the pair of extension plate portions 114 and 115 on the rotor rotation side shown in FIG. 1 extend from the end edge portion of the substrate portion 111 on the rotor rotation side shown in FIG. 5 to the rotor rotation side.
  • the connecting plate portion 118 connects the tip portions of the extension plate portions 114 and 115 on the rotor rotation side to each other.
  • the extending plate portions 114 and 115 are arranged on both sides of the engaging plate portion 112 in the rotor axial direction. As shown in FIG. 5, the extension plate portions 114, 115 and the connecting plate portion 118 are bent so that the rotor rotation side projects inward in the rotor radial direction.
  • the pair of extension plate portions 116, 117 on the rotor entry side shown in FIG. 1 extend from the end edge portion of the substrate portion 111 on the rotor entry side shown in FIG. 5 to the rotor entry side.
  • the connecting plate portion 119 connects the tip portions of the extension plate portions 116 and 117 on the rotor entry side to each other.
  • the extension plate portions 116 and 117 are arranged on both sides of the engagement plate portion 113 in the rotor axial direction.
  • the extension plate portions 114 and 116 on the outer side come into contact with the pad 102 on the outer side and press it inward in the rotor radial direction. At that time, the extension plate portion 114 on the rotor rotation side presses the pad 102 on the outer side also on the rotor rotation side.
  • the extension plate portions 115 and 117 on the inner side come into contact with the pad 102 on the inner side and press the pad 102 inward in the rotor radial direction. At that time, the extension plate portion 115 on the rotor rotation side presses the pad 102 on the inner side also on the rotor rotation side.
  • the pair of pads 102 are common parts having the same shape as each other.
  • the pad 102 has a back plate 121 that is long in the rotor rotation direction and a lining material 122 that is attached to the flat attachment surface 125 on one side in the thickness direction of the back plate 121. ..
  • the pad 102 is urged by the pad spring 101 and supported by the caliper main body 15, and contacts the disc rotor 11 in the lining material 122 to apply a braking force to the vehicle.
  • the pad 102 is pressed by the pistons 16 and 17 on the flat back surface 126 located on the opposite side of the back plate 121 from the sticking surface 125.
  • the pad 102 comes into contact with the disc rotor 11 at the flat tip surface 127 located on the opposite side of the back plate 121 of the lining material 122.
  • the front end surface 127 of the lining material 122 is a flat surface parallel to the sticking surface 125 and the back surface 126 of the back plate 121.
  • the side surfaces 128 on both sides in the rotor rotation direction are flat and parallel to each other.
  • the side surfaces 128 on both sides are perpendicular to the sticking surface 125 of the back plate 121.
  • the back plate 121 has a constant plate thickness, and is a pair of a main plate portion 130 to which the lining material 122 is attached and a pair extending from both ends in the rotor rotation direction on the outer side in the rotor radial direction of the main plate portion 130 to both outer sides in the rotor rotation direction. It has the extension portions 131 and 132 of the above.
  • the main plate portion 130 has a substantially rectangular shape that is long in the rotor rotation direction, and the extending portions 131 and 132 are both sides of the main plate portion 130 in the longitudinal direction from both ends in the rotor rotation direction in the longitudinal direction of the main plate portion 130. It extends in a direction that is tilted with respect to.
  • the longitudinal direction of the main plate portion 130 is the longitudinal direction of the back plate 121, and is the longitudinal direction of the pad 102. Therefore, the back plate 121 is formed with a pair of extending portions 131, 132 extending in a direction inclined with respect to the longitudinal direction of the pad 102 on both ends in the rotor rotation direction and outside in the rotor radial direction. There is.
  • the back plate 121 has a mirror-symmetrical outer shape of the main plate 130, and the extending portions 131 and 132 have a mirror-symmetrical shape.
  • One of the extending portions 131 is one end side of the main plate portion 130 in the rotor rotation direction and extends in a direction away from the main plate portion 130 along the longitudinal direction of the main plate portion 130 from the outside in the rotor radial direction.
  • the extension portion 131 is inclined so as to be located on the outer side in the rotor radial direction in the reference line direction toward the extension tip side.
  • the other extending portion 132 extends from the outside in the rotor radial direction to the other end side of the main plate portion 130 in the rotor rotation direction in a direction away from the main plate portion 130 along the longitudinal direction of the main plate portion 130.
  • the other extension portion 132 is inclined so as to be located on the outer side in the rotor radial direction in the reference line direction toward the extension tip side.
  • the main plate portion 130 has a side surface portion 141 which is a flat surface extending perpendicularly to the longitudinal direction of the main plate portion 130 on one side in the longitudinal direction which is the root position of the extension portion 131. Further, the main plate portion 130 has a side surface portion 142 which is a flat surface extending perpendicularly to the longitudinal direction of the main plate portion 130 on the other side in the longitudinal direction which is the root position of the extension portion 132.
  • the main plate portion 130 has an outer surface portion 143 which is a curved surface curved so as to project outward in the rotor radial direction on the outer side in the rotor radial direction.
  • Both the side surface portions 141 and 142 and the outer surface portion 143 are flat surfaces extending in the plate thickness direction of the back plate 121.
  • the side surface portions 141 and 142 are parallel to each other and are also parallel to the pair of side surface 128 of the lining material 122.
  • the extending portion 131 extends from between the side surface portion 141 and the outer surface portion 143.
  • the extending portion 131 has a substantially rhombic shape when the back plate 121 is viewed from the plate thickness direction.
  • the extending portion 131 includes a surface portion 151 that is outside the rotor rotation direction and faces the inside in the rotor radial direction and the outside in the rotor rotation direction, and a surface portion 152 that is inside the rotor rotation direction and faces the outside in the rotor radial direction and the inside in the rotor rotation direction. It has a surface portion 153 that is outside in the radial direction of the rotor and faces the outside in the radial direction of the rotor.
  • Each of these surface portions 151, 152, and 153 is a flat surface extending in the plate thickness direction of the back plate 121, and extends along the rotor axial direction.
  • the surface portion 151 extends from the edge portion side of the side surface portion 141 on the outer side in the rotor radial direction at an angle with respect to the longitudinal direction and the reference line direction of the pad 102, and extends outward in the rotor radial direction and outward in the rotor rotation direction. ..
  • the surface portion 151 and the side surface portion 141 form an obtuse angle.
  • the angle formed by the surface portion 151 and the side surface portion 141 is the same as the angle formed by the locking surface portion 73B of the pad sliding portion 32B and the torque receiving surface 71B.
  • the face portion 152 extends from the edge portion of the outer surface portion 143 on the side surface portion 141 side in the rotor rotation direction at an angle with respect to the longitudinal direction and the reference line direction of the pad 102, and extends outward in the rotor radial direction and outward in the rotor rotation direction. It is out.
  • the face portion 152 extends substantially parallel to the face portion 151.
  • the face portion 153 connects the edge portion of the face portion 151 on the side opposite to the side surface portion 141 and the end edge portion of the face portion 152 on the side opposite to the outer surface portion 143, and is perpendicular to the side surface portion 141. It has spread.
  • the face portion 151 and the face portion 153 have an acute angle, and the face portion 152 and the face portion 153 have an obtuse angle.
  • the extending portion 132 extends from between the side surface portion 142 and the outer surface portion 143.
  • the extending portion 132 has a substantially rhombic shape when the back plate 121 is viewed from the plate thickness direction.
  • the extending portion 132 includes a surface portion 161 that is outside the rotor rotation direction and faces the inside in the rotor radial direction and the outside in the rotor rotation direction, and a surface portion 162 that is inside the rotor rotation direction and faces the outside in the rotor radial direction and the inside in the rotor rotation direction. It has a surface portion 163 that is outside in the radial direction of the rotor and faces the outside in the radial direction of the rotor.
  • Each of these surface portions 161, 162, 163 is a flat surface extending in the plate thickness direction of the back plate 121, and extends along the rotor axial direction.
  • the surface portion 161 extends from the edge portion side of the side surface portion 142 on the outer side in the rotor radial direction at an angle with respect to the longitudinal direction and the reference line direction of the pad 102, and extends outward in the rotor radial direction and outward in the rotor rotation direction. ..
  • the surface portion 161 and the side surface portion 142 form an obtuse angle.
  • the angle formed by the surface portion 161 and the side surface portion 142 is the same as the angle formed by the surface portion 151 and the side surface portion 141.
  • the face portion 162 extends from the edge portion of the outer surface portion 143 on the side surface portion 142 side in the rotor rotation direction to the outside in the rotor radial direction and the outside in the rotor rotation direction at an angle with respect to the longitudinal direction and the reference line direction of the pad 102. It is out.
  • the face portion 162 extends substantially parallel to the face portion 161.
  • the face portion 163 connects the end edge portion of the face portion 161 opposite to the side surface portion 142 and the end edge portion of the face portion 162 opposite to the outer surface portion 143, and is perpendicular to the side surface portion 142. It has spread.
  • the face portion 161 and the face portion 163 form an acute angle.
  • the surface portion 162 and the surface portion 163 form an obtuse angle.
  • the face portion 163 is arranged on the same plane as the face portion 153.
  • the extension portions 131 are supported by the pad sliding portion 32B on the rotor entry side in a posture in which the extension portions 131 and 132 are arranged at the outer ends in the radial direction of the rotor, and the extension portions 131 are supported by the pad sliding portion 32B on the rotor entry side.
  • the extension portion 132 is supported by the pad sliding portion 33B on the rotor rotation side.
  • the extending portion 132 arranged on the rotor feeding side abuts on the extending plate portion 115 of the pad spring 101 on the surface portion 162, and the extending plate portion At 115, the rotor is pressed inward in the radial direction and toward the rotor rotation side. Further, the extending portion 132 abuts on the surface portion 161 with the locking surface portion 83B shown in FIG. 1 of the pad sliding portion 33B. Further, as shown in FIG. 5, in this pad 102, the extension portion 131 on the rotor entry side abuts on the extension plate portion 117 of the pad spring 101 on the surface portion 153, and the rotor diameter is reached at the extension plate portion 117. It will be pressed inward in the direction. Further, the extending portion 131 comes into contact with the locking surface portion 73B of the pad sliding portion 32B on the surface portion 151.
  • the urging force of the pad spring 101 causes the side surface portion 142 of the main plate portion 130 to face the inner side and the rotor rotation side facing the inner side portion 142.
  • the torque receiving surface 81B of the above is directly brought into contact with the surface contact.
  • the surface portion 161 of the extension portion 132 is brought into direct contact with the locking surface portion 83B (see FIG. 1) on the inner side and the rotor rotation side facing the extension portion 132 by surface contact.
  • the surface portion 151 of the extension portion 131 is brought into direct contact with the locking surface portion 73B on the inner side and the rotor entry side facing the extension portion 131 by surface contact.
  • the caliper main body 15 has a locking surface portion 73B in which the pad sliding portion 32B on the inner side extends along the extending direction of the extending portion 131 of the pad 102 on the inner side. In the pad 102 on the inner side, the extending portion 131 is locked to the pad sliding portion 32B on the inner side. Further, in this state, the caliper main body 15 has the locking surface portion 83B shown in FIG. 1 in which the pad sliding portion 33B on the inner side extends along the extending direction of the extending portion 132 of the pad 102 on the inner side. Become. In the pad 102 on the inner side, the extending portion 132 is locked to the pad sliding portion 33B on the inner side. Further, in this state, as shown in FIG.
  • the pad 102 on the inner side brings the side surface portion 142 of the main plate portion 130 into contact with the torque receiving surface 81B, and the side surface portion 141 of the main plate portion 130 is brought into contact with the torque receiving surface. It will face 71B with a slight gap. Further, in this state, in the pad 102 on the inner side, the extending portions 131 and 132 are arranged outside the outermost circumference of the disc rotor 11 in the rotor radial direction.
  • the lining material 122 is arranged on the inner side with respect to the back plate 121, and the extension portion 131,
  • the 132 is arranged on the outer side in the radial direction of the rotor.
  • the extension portion 131 is supported by the pad sliding portion 32A on the rotor rotation side
  • the extension portion 132 is supported by the pad sliding portion 33A on the rotor rotation side.
  • the extending portion 131 arranged on the rotor feeding side abuts on the extending plate portion 114 of the pad spring 101 on the surface portion 152, and the extending plate portion 114 Will be pressed inward in the radial direction of the rotor and toward the rotor rotation side.
  • the extending portion 131 comes into contact with the locking surface portion 73A of the pad sliding portion 32A at the surface portion 151 (see FIG. 5).
  • the extension portion 132 on the rotor entry side comes into contact with the extension plate portion 116 of the pad spring 101 at the surface portion 163, and is pressed inward in the rotor radial direction by the extension plate portion 116. ..
  • the extending portion 132 comes into contact with the locking surface portion 83A of the pad sliding portion 33A at the surface portion 161 (see FIG. 5).
  • the urging force of the pad spring 101 causes the side surface portion 141 (see FIG. 5) of the main plate portion 130 to face the outer side.
  • the torque receiving surface 71A on the rotor rotation side is brought into direct contact with the surface contact.
  • the surface portion 151 (see FIG. 5) of the extension portion 131 is brought into direct contact with the locking surface portion 73A on the outer side and the rotor rotation side facing the same, and the surface portion 161 of the extension portion 132 is brought into direct contact with the surface portion 161. (See FIG. 5) is brought into direct contact with the locking surface portion 83A on the outer side and the rotor entry side facing the same (see FIG. 5) by surface contact.
  • the caliper main body 15 has a locking surface portion 73A in which the pad sliding portion 32A on the outer side extends along the extending direction of the extending portion 131 of the pad 102 on the outer side. Then, in the pad 102 on the outer side, the extending portion 131 is locked to the pad sliding portion 32A on the outer side. Further, in this state, the caliper main body 15 has the pad sliding portion 33A on the outer side having the locking surface portion 83A in which the pad sliding portion 33A on the outer side extends along the extending direction of the extending portion 132 of the pad 102 on the outer side. Then, in the pad 102 on the outer side, the extending portion 132 is locked to the pad sliding portion 33A on the outer side.
  • the pad 102 on the outer side brings the side surface portion 141 (see FIG. 5) of the main plate portion 130 into contact with the torque receiving surface 71A, and the side surface portion 142 (see FIG. 5) of the main plate portion 130 is brought into contact with the torque receiving surface. It will face 81A with a slight gap. Further, in this state, in the pad 102 on the outer side, the extending portions 131 and 132 are arranged outside the outermost circumference of the disc rotor 11 in the rotor radial direction.
  • the pair of pads 102 are slidably locked to one caliper main body 15.
  • the inner pad 102 shown in FIG. 5 is supported by the inner pad sliding portions 32B and 33B of the caliper main body 15 and moves in the rotor axial direction.
  • the pad sliding portions 32B and 33B are the locking surface portions 73B arranged in a V shape on both sides in the rotor rotation direction and the locking surface portions 83B shown in FIG. It will be locked. Therefore, in the caliper main body 15, the pad sliding portions 32B and 33B on the inner side slidably support the pad 102 on the inner side in the rotor axial direction.
  • the outer pad 102 shown in FIG. 1 is supported by the pad sliding portions 32A and 33A on the outer side of the caliper main body 15 and moves in the rotor axial direction.
  • the pad sliding portions 32A and 33A lock the extending portions 131 and 132 of the pad 102 on the outer side with the locking surface portions 73A and 83A arranged in a V shape on both sides in the rotor rotation direction. Therefore, in the caliper main body 15, the pad sliding portions 32A and 33A on the outer side slidably support the pad 102 on the outer side in the rotor axial direction.
  • the caliper 12 has a so-called pad pinless structure in which the pair of pads 102 are directly supported by the caliper body 15 without having the pad pins that support the pair of pads 102.
  • the two pistons 16 and 17 provided on the inner cylinder portion 22 press the inner pad 102 provided between the inner cylinder portion 22 and the disc rotor 11, and the lining material 122 thereof is pressed. Press against the disc rotor 11. As a result, the pair of pads 102 press the disc rotor 11 to generate a braking force on the vehicle.
  • the pair of pads 102 are locked to the caliper main body 15 so that the movement in the rotor radial direction and the rotor rotation direction is regulated by the pad sliding portions 32A, 33A, 32B, 33B, and the rotor shaft It will move in the direction.
  • the inner pad 102 moves while being supported by the inner pad sliding portions 32B and 33B at the extending portions 131 and 132.
  • the extending portion 132 slides on the locking surface portion 83B of the pad sliding portion 33B on the surface portion 161 and the extending portion 131 slides on the locking surface portion 73B of the pad sliding portion 32B on the surface portion 151.
  • the pad 102 on the outer side is locked to the pad sliding portions 32A and 33A on the outer side at the extending portions 131 and 132 and moves.
  • the caliper main body 15 including the pad sliding portions 32A, 33A, 32B, 33B locks the pad 102 so as to be movable in the rotor axial direction.
  • both of the pair of pads 102 come into contact with the disc rotor 11 in the lining material 122 and move to the rotor rotation side. Then, as shown in FIG. 4, the pad 102 on the inner side comes into contact with the torque receiving surface 81B of the pad sliding portion 33B on the rotor rotation side on the side surface portion 142 of the back plate 121. Then, the pad 102 on the outer side comes into contact with the torque receiving surface 71A of the pad sliding portion 32A on the rotor rotation side on the side surface portion 141 of the back plate 121. As a result, the caliper main body 15 receives braking torque mainly at the pad sliding portions 32A and 33B.
  • the pair of pads 102 all come into contact with the disc rotor 11 at the lining material 122 and move to the rotor rotation side at the time of reverse. Then, the pad 102 on the inner side comes into contact with the torque receiving surface 71B of the pad sliding portion 32B on the side surface portion 141 of the back plate 121. Further, the pad 102 on the outer side abuts on the torque receiving surface 81A of the pad sliding portion 33A on the side surface portion 142 of the back plate 121. As a result, the caliper main body 15 receives braking torque mainly at the pad sliding portions 32B and 33A.
  • the caliper main body 15 is provided with an intermediate connecting portion 25 straddling the intermediate portion of the pad arrangement space 61 in the rotor rotation direction in the rotor axial direction on the outside of the pad arrangement space 61 in the rotor radial direction. .. Therefore, when assembling the pair of pads 102 to the caliper main body 15, they interfere with each other from the outside in the rotor radial direction and cannot be assembled, and are assembled from the inside in the rotor radial direction.
  • the pad arrangement space 61 and the pad assembly space 52 have a size and shape that cannot be assembled to the caliper main body 15 together with the two pads 102. Therefore, the pair of pads 102 are assembled one by one to the caliper main body 15 from the inside in the rotor radial direction.
  • the pad 102 on the outer side in a new state is first assembled to the pad sliding portions 32A and 33A on the outer side, and then the pad 102 on the inner side in a new state is assembled to the pad sliding portions 32B and 33B on the inner side. become.
  • the pad 102 on the outer side to be assembled first passes the extending portion 132 through the pad assembling space 52, so that the extending portions 131 and 132 move the pad sliding portions 32A and 33A out of the rotor radial direction. It can be crossed over and can be assembled to the pad sliding portions 32A and 33A.
  • the caliper main body 15 of this embodiment is miniaturized in the rotor axial direction. Therefore, the pad arrangement space 61 and the pad assembly space 52 are in a state where the pad 102 on the outer side in the new state attached earlier is closest to the outer side, in other words, as shown in FIG. 8, on the outer side. Even if the back surface 126 of the back plate 121 of the pad 102 is brought into contact with the intermediate wall surface portion 86A by surface contact, it cannot be assembled to the caliper main body 15.
  • FIG. 8 is a view of the vicinity of the pad arrangement space 61 of the caliper main body 15 as viewed from the outside in the radial direction of the rotor along the direction of the radial reference line.
  • the pad 102 on the outer side in the new state is first assembled to the pad sliding portions 32A and 33A on the outer side, and the caliper main body 15 is positioned at the end position on the outermost side, and is on the inner side in the new state. Even if the pad 102 is moved in the rotor radial direction while the tip surface 127 of the pad 102 is in surface contact with the tip surface 127 of the pad 102 on the outer side, the pad slide forming the pad assembly space 52 and the pad arrangement space 61.
  • the moving parts 32A, 32B, 33A, 33B and the support connecting part 51 hinder this.
  • the extending portion 131 is placed in the pad assembly space 52. Even if the pad sliding portion 32B is passed through in the rotor radial direction, as shown in FIG. 8, the extending portion 131 interferes with the pad sliding portion 32B due to overlapping positions in the rotor rotation direction and the rotor axial direction. Will end up. Therefore, the extending portion 131 cannot cross the pad sliding portion 32B in the rotor radial direction.
  • the pad 102 on the inner side in the new state is first assembled to the pad sliding portions 32B and 33B on the inner side, and then the pad 102 on the outer side in the new state is attached to the pad sliding portion on the outer side.
  • the pad 102 on the inner side is assembled to the pad sliding portions 32B and 33B on the inner side in a new state, and the pad 102 on the inner side is the most inner side.
  • the pad 102 on the outer side in a new state is assembled to the caliper main body 15 in a state where the tip surface 127 is brought into surface contact with the tip surface 127 of the pad 102 on the inner side and arranged in parallel with the pad 102 on the inner side. I can't.
  • the pad 102 on the inner side in the new state is first assembled to the pad sliding portions 32B and 33B on the inner side, and the caliper body 15 is positioned at the end position on the innermost side, and is on the outer side in the new state. Even if the pad 102 is moved in the rotor radial direction while the tip surface 127 is in surface contact with the tip surface 127 of the pad 102 on the inner side, the pad slide forming the pad assembly space 52 and the pad arrangement space 61.
  • the moving parts 32A, 32B, 33A, 33B and the support connecting part 51 hinder this.
  • the extending portion 132 is placed in the pad assembly space 52. Even if the pad sliding portion 33A is passed through in the rotor radial direction, the extending portion 132 overlaps the pad sliding portion 33A in the rotor rotation direction and the rotor axial direction and interferes with the pad sliding portion 33A. Therefore, the pad sliding portion 33A cannot be crossed in the rotor radial direction.
  • the distance between the back surface 126 of the back plate 121 in a new state of the pad 102 on the outer side and the tip surface 127 of the lining material 122 is defined as the new thickness Pt1.
  • the new thickness Pt1 is the maximum thickness of the pad 102 in a new state.
  • the distance between the back surface 126 of the back plate 121 in the new state of the pad 102 on the inner side and the tip surface 127 of the lining material 122 is defined as the new thickness Pt2.
  • the distance between the rotor facing surface 72B of the pad sliding portion 32B on the rotor entry side and the inner side and the intermediate wall surface portion 86B is defined as the rotor axial width Ci.
  • Co be the distance between the rotor facing surface 82A and the intermediate wall surface portion 86A of the pad sliding portion 33A on the rotor entry side and the outer side.
  • the total distance Ci + Csx of the pad sliding portion 32B on the inner side and the pad assembly space 52 is smaller than the thickness 2 ⁇ Pt of two pads 102. That is, the relationship is 2 ⁇ Pt> Ci + Csx.
  • the total distance between one of the pad sliding portion 33A on the outer side and the pad sliding portion 32B on the inner side and the pad assembling space 52 is two of the pads 102.
  • the dimensional relationship is shorter than the thickness of the minute.
  • the pad 102 on the outer side in a new state is first assembled to the pad sliding portions 32A and 33A on the outer side. After that, when assembling the pad 102 on the inner side in a new state to the pad sliding portions 32B and 33B on the inner side, the pad 102 on the outer side is brought closer to the outer side, in other words, the pad 102 on the outer side.
  • the back surface 126 of the back plate 121 is brought into contact with the intermediate wall surface portion 86A by surface contact. Then, if the pad 102 on the inner side in a new state is slanted with respect to the pad 102 on the outer side, the extending portion 131 can be passed through the pad assembling space 52.
  • the pad arrangement space 61 and the pad assembly space 52 are formed in a shape in which the pad 102 on the inner side in a new state can be assembled to the caliper main body 15.
  • FIG. 9 is also a view of the vicinity of the pad arrangement space 61 of the caliper main body 15 as viewed from the outside in the radial direction of the rotor along the direction of the radial reference line.
  • the pad sliding portions 32A, 32B, 33A, 33B and the support connecting portion 51 forming the pad assembling space 52 and the pad arrangement space 61 were first assembled to the pad sliding portions 32A, 33A on the outer side. If the pad 102 on the outer side in the new state is positioned at the end position on the outermost side, this will be hindered when the pad 102 on the inner side in the new state is moved from the inside to the outside in the radial direction of the rotor. It is possible to pass without.
  • the pad 102 on the inner side in the new state is first assembled to the pad sliding portions 32B and 33B on the inner side, and then the pad 102 on the outer side in the new state is attached to the pad sliding portion on the outer side.
  • the pad 102 on the inner side is brought closer to the inner side, in other words, the back surface 126 of the back plate 121 of the pad 102 on the inner side is brought into contact with the intermediate wall surface portion 86B by surface contact. Let it be in the state of being made.
  • the pad arrangement space 61 and the pad assembly space 52 are formed in a shape that allows the pad 102 on the outer side in a new state to be assembled to the caliper main body 15.
  • the pad sliding portions 32A, 32B, 33A, 33B and the support connecting portion 51 forming the pad assembling space 52 and the pad arrangement space 61 were first assembled to the pad sliding portions 32B, 33B on the inner side. If the pad 102 on the inner side in the new state is positioned at the end position on the innermost side, the pad 102 on the outer side in the new state will not be hindered when moving from the inside to the outside in the radial direction of the rotor. It is possible to pass through with.
  • FIG. 10 is also a view of the vicinity of the pad arrangement space 61 of the caliper main body 15 as viewed from the outside in the radial direction of the rotor along the direction of the radial reference line.
  • the pad 102 on the outer side in the new state is first assembled to the pad sliding portions 32A and 33A on the outer side, and then the pad 102 on the inner side in the new state is attached to the pad sliding portions 32B and 33B on the inner side.
  • the case of assembling is illustrated.
  • the tip surface 127 of the lining material 122 of the pad 102 on the outer side in the new state which is assembled first to the pad sliding portions 32A and 33A on the outer side and is brought closer to the outer side.
  • the shortest distance between and the boundary position X1 between the rotor and the side surface 128 on the rotor entry side; and the boundary position X2 between the torque receiving surface 71B of the pad sliding portion 32B on the inner side and the rotor facing surface 72B; is defined as Csm.
  • the shapes of the pad assembly space 52 and the pad arrangement space 61 are set so that the shortest distance Csm is larger than the new thickness Pt of the pad 102 on the inner side.
  • the straight line extending from the boundary position X2 to the rotor rotation side orthogonal to the line connecting the boundary position X1 and the boundary position X2 does not intersect the intermediate wall surface portion 86B.
  • the lining material 122 on the pad assembly space 52 side of the pad 102 on the new inner side which is assembled first to the pad sliding portions 32B and 33B on the inner side and is brought closer to the inner side.
  • the shapes of the pad assembly space 52 and the pad arrangement space 61 are set so that the shortest distance Csm is larger than the new thickness Pt of the pad 102 on the outer side.
  • the shapes of the pad assembly space 52 and the pad arrangement space 61 are set so that Csm> Pt.
  • Co Ci.
  • Ct Co + Csx + Ci.
  • A Csx + Co-Pt.
  • A is the distance between the tip surface 127 of the pad 102 on the outer side and the rotor facing surface 72B of the pad sliding portion 32B on the inner side.
  • the shortest distance between the torque receiving surfaces 71B and 81A of the pad sliding portions 32B and 33A and the boundary position X1 of the lining material 122 of the pad 102 on the outer side is S, and the line connecting the boundary position X1 and the boundary position X2.
  • ⁇ be the angle formed by the torque receiving surfaces 71B and 81A.
  • the boundary position X2 which is the end of the pad sliding portion 32B on the inner side on the disc rotor side and the rotor rotation side, is in the direction of being separated from the disc rotor 11 on the pad sliding portion 33A on the other outer side.
  • the shortest distance Csm from the pad 102 is provided at a position where the thickness Pt is longer than the thickness Pt of one pad 102, that is, at a position where Csm> Pt. ing.
  • the boundary position X2 which is the end of the pad sliding portion 32B on one inner side on the disc rotor side and the rotor rotation side, is in the direction of being separated from the disc rotor 11 on the pad sliding portion 33A on the other outer side.
  • the gap with the pad 102 is provided at a position where the thickness Pt is longer than the thickness Pt of one pad 102.
  • the boundary position of the pad sliding portion 33A on the other outer side which is the end on the disc rotor side and the rotor rotation side, is in the direction away from the disc rotor 11 in the pad sliding portion 32B on the inner side of one.
  • one new pad 102 is arranged at the end position, it is provided at a position where the shortest distance from the pad 102 is longer than the thickness of one pad 102.
  • the boundary position of the pad sliding portion 33A on the other outer side which is the end on the disc rotor side and the rotor rotation side, is in the direction away from the disc rotor 11 in the pad sliding portion 32B on the inner side.
  • one new pad 102 is arranged at the end position, it is provided at a position where the gap with the pad 102 becomes longer than the thickness of one pad 102.
  • Patent Document 1 discloses a disc brake having a structure in which a space open in the rotor radial direction is provided in the caliper main body and a pad is arranged in this space.
  • Disc brakes are required to be miniaturized, but if they are simply miniaturized, the pads cannot be attached to the caliper body.
  • Co + Csx which is the total distance between the pad sliding portion 33A on the outer side and the pad assembling space 52 in the rotor axial direction
  • Ci + Csx which is the total distance between the pad sliding portion 32B on the inner side and the pad assembling space 52, is smaller than the thickness 2 ⁇ Pt of two pads 102. ..
  • the caliper main body 15 can be miniaturized at least in the rotor axial direction.
  • the boundary position X2 which is the end of the pad sliding portion 32B on the inner side on the disc rotor side and the rotor rotation side, is separated from the disc rotor 11 on the pad sliding portion 33A on the other outer side.
  • one new pad 102 is arranged at the end position in the direction, it is provided at the shortest distance Csm from the pad 102, that is, at a position where the gap is longer than the thickness Pt of one pad 102.
  • the boundary position of the pad sliding portion 33A on the other outer side which is the end portion on the disc rotor side and the rotor rotation side, is in the direction of being separated from the disc rotor 11 in the pad sliding portion 32B on the inner side.
  • one new pad 102 is arranged at the end position, it is provided at the shortest distance from the pad 102, that is, at a position where the gap is longer than the thickness of one pad 102.
  • the pad assembly space 52 is provided on the rotor entry side when the vehicle is moving forward. Therefore, the pad sliding portions 32A and 33B on the rotor rotation side, which receive a large torque, can be connected by the support connecting portion 51 to increase the rigidity. Further, the locking surface portions 73A and 83B for locking the pads 102 of the pad sliding portions 32A and 33B can be made continuous by the locking surface portion 53 of the support connecting portion 51. Therefore, the caliper main body 15 has an increased contact area with the pad 102 on the rotor rotation side. Therefore, the vibration resistance is improved. In addition, processing for forming a pad assembly space between the pad sliding portions 32A and 33B becomes unnecessary, and the processing cost can be reduced.
  • the rigidity and vibration resistance of the caliper main body 15 can be effectively increased and the processing cost can be reduced as compared with the case where the pad assembly space is provided on the rotor rotation side.
  • the support connecting portion 51 does not necessarily have to be provided. That is, if the gap between the pad sliding portions 32A and 33B is narrower in the rotor axial direction than the gap between the pad sliding portions 32B and 33A, in other words, the distance between the rotor facing surfaces 72B and 82A, the caliper main body 15 It is effective in improving the rigidity and vibration resistance of the product.
  • the pad assembly space 52 is formed only on the rotor turning side of the caliper main body 15 when the vehicle is moving forward.
  • the pad assembly space 52 may also be formed on the rotor rotation side of the caliper main body 15 when the vehicle is moving forward. Further, the pad assembly space 52 may be formed only on the rotor rotation side of the caliper main body 15 when the vehicle is moving forward. Further, although the rotor facing surfaces 72B and 82A are designed to spread perpendicularly to the rotor axis, they may be inclined so as to spread diagonally to the rotor axis.
  • the disc brake according to the first aspect of the present embodiment described above includes a pair of pads that press the disc rotor; and a pad assembly space that is arranged so as to straddle the disc rotor and opens in the rotor radial direction.
  • a caliper body having a pair of pad sliding portions that slidably support the pair of pads in the rotor axial direction on both sides of the pad assembly space in the rotor axial direction; In the above, the total length of the pad sliding portion on either the outer side or the inner side and the pad assembling space is shorter than the thickness of two of the pads, and the pair of pads slide.
  • the pad assembly space is formed on the inlet side in the rotational direction of the disc rotor when the vehicle is moving forward.
  • the end of the pad sliding portion on the disc rotor side is the end of the pad sliding portion on the disc rotor side and in the rotor rotation direction. It is in the boundary position that becomes a part.
  • the disc brake according to the fourth aspect includes a pair of pads for pressing the disc rotor; a pad assembly space arranged straddling the disc rotor and opening in the rotor radial direction, and the pad assembly space.
  • a caliper body having a pair of pad sliding portions that slidably support the pair of pads in the rotor axial direction on both sides of the space in the rotor axial direction; The total length of the pad sliding portion on either side and the pad assembling space is shorter than the thickness of two of the pads, and the disc in one of the pair of pad sliding portions.
  • the distance from the pad is one of the pads. It is provided at a position that is longer than the thickness of one. According to this configuration, miniaturization is possible.
  • the pad assembly space is formed on the inlet side in the rotational direction of the disc rotor when the vehicle is moving forward.
  • the end of the pad sliding portion on the disc rotor side is the end of the pad sliding portion on the disc rotor side and in the rotor rotation direction. It is in the boundary position that becomes a part.

Landscapes

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

Abstract

Ce frein à disque est pourvu d'une paire de plaquettes et d'un corps d'étrier. Dans la direction axiale du rotor, la longueur combinée d'un espace d'assemblage de plaquette et d'une partie coulissante de plaquette sur le côté extérieur ou le côté intérieur est plus courte que l'épaisseur de deux plaquettes. La partie d'extrémité côté rotor de disque de l'une des deux parties coulissantes de plaquette est positionnée de telle sorte que, lorsque l'une des plaquettes est agencée selon une position correspondant à la partie d'extrémité de l'autre de la paire de parties coulissantes de plaquette dans une direction s'éloignant du rotor de disque, l'espace entre cette plaquette et la partie d'extrémité côté rotor de disque est plus long que l'épaisseur d'une seule des plaquettes.
PCT/JP2020/046980 2019-12-25 2020-12-16 Frein à disque WO2021131973A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2021567343A JP7241922B2 (ja) 2019-12-25 2020-12-16 ディスクブレーキ
DE112020006321.6T DE112020006321T5 (de) 2019-12-25 2020-12-16 Scheibenbremse
CN202080089766.5A CN114901963A (zh) 2019-12-25 2020-12-16 盘式制动器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-233896 2019-12-25
JP2019233896 2019-12-25

Publications (1)

Publication Number Publication Date
WO2021131973A1 true WO2021131973A1 (fr) 2021-07-01

Family

ID=76575926

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/046980 WO2021131973A1 (fr) 2019-12-25 2020-12-16 Frein à disque

Country Status (4)

Country Link
JP (1) JP7241922B2 (fr)
CN (1) CN114901963A (fr)
DE (1) DE112020006321T5 (fr)
WO (1) WO2021131973A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5699132A (en) * 1979-12-28 1981-08-10 Savin Corp Feeder
JPH0685937A (ja) * 1992-09-04 1994-03-25 Matsushita Electric Ind Co Ltd テレビ会議用多地点制御装置
JP2014173623A (ja) * 2013-03-06 2014-09-22 Hitachi Automotive Systems Ltd ディスクブレーキ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5699132U (fr) * 1980-12-16 1981-08-05
JP2554959Y2 (ja) * 1993-05-21 1997-11-19 日信工業株式会社 車両用ディスクブレーキ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5699132A (en) * 1979-12-28 1981-08-10 Savin Corp Feeder
JPH0685937A (ja) * 1992-09-04 1994-03-25 Matsushita Electric Ind Co Ltd テレビ会議用多地点制御装置
JP2014173623A (ja) * 2013-03-06 2014-09-22 Hitachi Automotive Systems Ltd ディスクブレーキ

Also Published As

Publication number Publication date
DE112020006321T5 (de) 2022-10-06
JPWO2021131973A1 (fr) 2021-07-01
JP7241922B2 (ja) 2023-03-17
CN114901963A (zh) 2022-08-12

Similar Documents

Publication Publication Date Title
WO2021125052A1 (fr) Frein à disque et composant de couvercle
JP4342757B2 (ja) ディスクブレーキ
WO2021131973A1 (fr) Frein à disque
JP6871829B2 (ja) 対向ピストン型ディスクブレーキ用キャリパ
EP1515061B1 (fr) Frein à disque monté radialement
JP6198299B2 (ja) ディスクブレーキ
JP6270644B2 (ja) ディスクブレーキ
JP7486607B2 (ja) ディスクブレーキ
JP4250117B2 (ja) ピンスライド型車両用ディスクブレーキ
JP6818128B2 (ja) ディスクブレーキ
JP7012605B2 (ja) ディスクブレーキ
JP6122750B2 (ja) ディスクブレーキ
JP6656756B2 (ja) ディスクブレーキ装置及びディスクブレーキ装置用パッドクリップ
JP7034281B2 (ja) ディスクブレーキおよびキャリパ
WO2023089860A1 (fr) Frein à disque et plaque
JP4833177B2 (ja) ディスクブレーキ
JP4076750B2 (ja) 対向ピストン型ディスクブレーキ
JP5559503B2 (ja) ディスクブレーキ
JP6249609B2 (ja) ディスクブレーキ
WO2021106980A1 (fr) Frein à disque
JP7050603B2 (ja) ディスクブレーキ
JP4554416B2 (ja) ディスクブレーキ
JP7356939B2 (ja) ディスクブレーキ
JP4342763B2 (ja) ディスクブレーキ
JP6952573B2 (ja) ブレーキ用摩擦パッドおよびディスクブレーキ

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20907771

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2021567343

Country of ref document: JP

Kind code of ref document: A

122 Ep: pct application non-entry in european phase

Ref document number: 20907771

Country of ref document: EP

Kind code of ref document: A1