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1. 发明公开

EP4265935A1 CALIPER BODY FOR VEHICULAR DISC BRAKE 审中-实审
公开(公告)号：EP4265935A1
公开(公告)日：2023-10-25
申请号：EP21906563.8
申请日：2021-12-13
申请人： Hitachi Astemo, Ltd.
发明人： ATSUTA, Daiki
IPC分类号： F16D65/02 , F16D55/228
摘要： A caliper body formed by selectively assembling either one of a radial-mount vehicle-body-side-opposing caliper half-body and an axial-mount vehicle-body-side-opposing caliper half-body to a vehicle-body-side caliper half-body, wherein: a hydraulic fluid introduction hole for introducing a hydraulic fluid into a cylinder hole from a joint surface toward a bottom portion side of the cylinder hole is formed in each of a vehicle-body-side caliper half-body 5, a radial-mount vehicle-body-side-opposing caliper half-body 6, and the axial-mount vehicle-body-side-opposing caliper half-body; the introduction hole formed in the radial-mount vehicle-body-side-opposing caliper half-body 6 and the introduction hole formed in the axial-mount vehicle-body-side-opposing caliper half-body each communicate with the introduction hole formed in the vehicle-body-side caliper half-body 5 at the joint surfaces; and either one of the radial-mount vehicle-body-side-opposing caliper half-body 6 and the axial-mount vehicle-body-side-opposing caliper half-body can be selectively assembled to the vehicle-body-side caliper half-body 5 by being joined thereto via the respective joint surfaces.

2. 发明公开

EP4397882A1 DISC BRAKE AND FRICTION PAD FOR VEHICLE 审中-实审
公开(公告)号：EP4397882A1
公开(公告)日：2024-07-10
申请号：EP22864556.0
申请日：2022-08-30
申请人： Hitachi Astemo, Ltd.
发明人： ATSUTA, Daiki
IPC分类号： F16D65/02 , F16D65/095 , F16D65/097 , F16D55/225 , F16D55/228
CPC分类号： F16D55/228 , F16D65/02 , F16D55/225 , F16D65/095 , F16D65/097
摘要： In a vehicular disc brake and a friction mud capable of preventing a position of a pad spring from being displaced at the time of assembly and improving an assembling property, a pad spring 6 includes: a hanger pin abutting portion 6a that abuts against an outer peripheral surface on a disc radial inner side of a hanger pin 4; a first elastic portion 6c and a second elastic portion 6e that abut against a pair of friction pads 5, 5 and urge the friction pads 5, 5 to a disc radial inner side; and a first positioning piece 6g and a second positioning piece 6h that abut against the friction pads 5, 5 to determine positioning of the pad spring 6 when the friction pads 5, 5 and the pad spring 6 are assembled to a caliper body 3.

3. 发明公开

EP4260964A1 METHOD FOR PRODUCING CALIPER HALF BODY OF DISC BRAKE CALIPER BODY, CALIPER HALF BODY OF DISC BRAKE CALIPER BODY, AND METHOD FOR PROVIDING DISC BRAKE CALIPER BODY 审中-实审
公开(公告)号：EP4260964A1
公开(公告)日：2023-10-18
申请号：EP21906562.0
申请日：2021-12-13
申请人： Hitachi Astemo, Ltd.
发明人： ATSUTA, Daiki
IPC分类号： B22D25/02 , F16D65/02 , F16D55/226
摘要： A method for producing a caliper half body, the method involving producing a caliper half body to be used in multiple types of disc brake caliper bodies having different cylinder hole diameters by using the same casting material having a cylinder hole pilot hole, wherein the method comprises: an introduction hole drilling step for forming a first hydraulic fluid introduction hole 11 or a second hydraulic fluid introduction hole 16, through which a hydraulic fluid is introduced into a cylinder hole, in the same casting material by drilling at the same angle from the end surface that will be the joint surface toward the bottom side of the cylinder hole pilot hole; a cylinder hole cutting step for cutting the pilot hole to the established diameter of the cylinder hole; and a connection hole cutting step for forming a connection hole, through which the bottom side of the cut cylinder hole and the first hydraulic fluid introducing hole 11 or the second hydraulic fluid introducing hole 16 are connected, by contouring the bottom side of the cylinder hole.

4. 发明公开

EP4253176A1 CALIPER BODY OF DISC BRAKE FOR VEHICLE 审中-实审
公开(公告)号：EP4253176A1
公开(公告)日：2023-10-04
申请号：EP21898057.1
申请日：2021-11-25
申请人： Hitachi Astemo, Ltd.
发明人： ATSUTA, Daiki
IPC分类号： B60T17/00 , F16D65/02 , F16D55/228
摘要： This caliper body of a disc brake for a vehicle prevents a mounting seat surface of a union bolt or bleeder screw from protruding outward from a caliper half body, and improves miniaturization and assembly characteristics. A disc outward-rotation-side end of a bridge half body 6c of an anti-vehicle body-side caliper half body 6 is provided with union holes 18 that open to a disc outward-rotation-side end surface 6g and communicate with a second working fluid introduction hole 16. A mounting seat surface 6h of a union bolt 19 is formed on the disc outward-rotation-side end surface 6g of an opening outer periphery of the union holes 18. A bleeder hole 12 that opens to an outer end surface 5g in the disc radial direction and communicates with a first working fluid introduction hole 11 is provided on the disk outward-rotation- side of a bridge half body 5c of a vehicle body-side caliper half body 5 and to a disc radial direction outer end. A mounting seat surface 5h of a bleeder screw 13 is formed on the disc radial direction outer end surface 5g of an opening outer periphery of the bleeder hole 12.

5. 发明公开

EP4206486A1 DISC BRAKE DEVICE 审中-实审
公开(公告)号：EP4206486A1
公开(公告)日：2023-07-05
申请号：EP21861532.6
申请日：2021-08-24
申请人： Hitachi Astemo, Ltd.
发明人： ATSUTA, Daiki
IPC分类号： F16D65/097
摘要： A retainer (72) of a disc brake device (10) comprises: abutment portions (72b, 72f) for pressing a pair of brake pads (48L, 48R) inward in the radial direction of a brake disc (16); connection portions (72c, 72e) connected to the abutment portions (72b, 72f); and widened portions (72g, 72h) provided in the connection portions (72c, 72e) and alleviating stress concentration at the connection portions (72c, 72e) by being formed to be wider in the axial direction (W) of the brake disc (16) than any other position in the connection portions (72c, 72e).

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