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公开(公告)号：US12054050B2
公开(公告)日：2024-08-06
申请号：US17617510
申请日：2020-06-02
Applicant: YAMASHITA RUBBER CO., LTD.
Inventor： Hirokazu Kadowaki
CPC classification number: B60K5/1208 , F16F13/101 , F16F13/103 , F16F13/108
Abstract: A vibration proofing device (10) includes an insulator (50) interposed between a first attaching member (30) and a second attaching member (40), and is disposed in an internal space (95) of a second bracket (90). The first attaching member (30) is formed to have two side walls (33, 33) parallel to each other to face the inner face of the second bracket (90). The second attaching member (40) is a tubular member having an opening (41a) passing therethrough in an upper-lower direction. At least one of side edge portions of each side wall (33) is disposed outside the opening (41a) of the second attaching member (40). Each side wall (33) is provided on an outer face thereof with a stopper (51) made of an elastic material. With this configuration, it is possible to sufficiently absorb an impact shock resulting from the stopper (51) hitting the second bracket (90).
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公开(公告)号：US20220089011A1
公开(公告)日：2022-03-24
申请号：US17481075
申请日：2021-09-21
Applicant: YAMASHITA RUBBER CO., LTD.
Inventor： Hirokazu Kadowaki
IPC: B60K5/12
Abstract: A torque rod includes: a rod body; a first coupling section provided at one end in an X-axis direction as a longitudinal direction of the rod body and having a first center axis along a Y-axis direction orthogonal to the X-axis direction; and a second coupling section provided at the other end in the X-axis direction of the rod body and being larger than the first coupling section. The first coupling section includes: an outer member having a cylinder shape connected to the rod body; an inner member provided in the center of the outer member; and an elastic member to elastically join the outer member with the inner member, and the elastic member has a spring constant in a Z-axis direction orthogonal to the X-axis direction and the Y-axis direction smaller than a spring constant in the X-axis direction.
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公开(公告)号：US11780311B2
公开(公告)日：2023-10-10
申请号：US17543043
申请日：2021-12-06
Applicant: YAMASHITA RUBBER CO., LTD.
Inventor： Hirokazu Kadowaki
CPC classification number: B60K5/1208 , F16F3/0873
Abstract: A torque rod includes a rod body, a large round portion, and a small round portion. The large round portion is provided at one end of the rod body. The small round portion is provided at the other end of the rod body. The large round portion includes an outer portion, an inner portion, and a joint portion. The outer portion has a tubular shape. The inner portion is provided on an inner side of the outer portion and has an annular opening to which an attaching member is attached. The joint portion elastically joins the outer portion and the inner portion. The inner portion includes a base portion and an extending portion. The base portion has the opening formed therein. The extending portion extends from the base portion toward the small round portion. The joint portion is provided between the extending portion and the outer portion.
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公开(公告)号：US20220307570A1
公开(公告)日：2022-09-29
申请号：US17694386
申请日：2022-03-14
Applicant: YAMASHITA RUBBER CO., LTD.
Inventor： Hirokazu Kadowaki
IPC: F16F15/04
Abstract: A vibration-damping device includes a housing having a cylindrical mounting hole therein and a vibration-damping member provided in the mounting hole. The vibration-damping member includes an outer cylinder fitted into the mounting hole, an inner cylinder provided in the outer cylinder, and a rubber elastic body inserted between the outer cylinder and the inner cylinder. The rubber elastic body is formed with a bore penetrating in an axial direction thereof and a stopper protruding from a radially-inner wall surface thereof for the bore. The housing is formed with a receiving part which faces the stopper, in a radial direction of the mounting hole, across a gap.
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公开(公告)号：US20200217391A1
公开(公告)日：2020-07-09
申请号：US16330547
申请日：2017-09-06
Applicant: YAMASHITA RUBBER CO., LTD.
Inventor： Hirokazu Kadowaki
Abstract: An anti-vibration device is provided with: an anti-vibration device body, in which an insulator is disposed between a first attachment member and a second attachment member; and a bracket, which has opposing wall portions and to which the anti-vibration device body is fixed by press-fitting via the second attachment member between the wall portions. The second attachment member is provided with interlocking portions that interlock with the wall portions and restrain the anti-vibration device body from moving in the direction opposite the press-fitting direction when the anti-vibration device body is press-fitted to the bracket. Each of the interlocking portions is configured so as to have an arm part extending in the direction opposite the press-fitting direction, and a hook part provided to the extension-direction end of the arm part and caused to interlock with a to-be-interlocked part of one of the wall portions.
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Patent Agency Ranking
公开(公告)号：US09982744B2
公开(公告)日：2018-05-29
申请号：US15474537
申请日：2017-03-30
Applicant: Yamashita Rubber Co., Ltd.
Inventor： Hirokazu Kadowaki
CPC classification number: F16F13/10 , B60K5/1208 , F16F13/103 , F16F15/022
Abstract: A liquid-sealed vibration damping device is provided that allows an outer cylindrical member to have a substantially uniform interference margin in the circumferential direction, while improving an assembling property. A second mounting member mounted on a non-vibration source includes: a first frame in a cylindrical shape that is connected to a lower portion of an insulator; a second frame in a cylindrical shape that holds a partition member arranged below the insulator; and a connector that connects the first frame with the second frame. The connector includes: engaging parts that are arranged on the first frame; and elastic hook parts that are arranged on the second frame. The elastic hook parts are arranged at intervals on each of main frame parts in the circumferential direction thereof, and the elastic hook parts arranged on corners have lower rigidity than those arranged on the main frame parts.
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公开(公告)号：US20220176792A1
公开(公告)日：2022-06-09
申请号：US17543043
申请日：2021-12-06
Applicant: YAMASHITA RUBBER CO., LTD.
Inventor： Hirokazu Kadowaki
Abstract: A torque rod includes a rod body, a large round portion, and a small round portion. The large round portion is provided at one end of the rod body. The small round portion is provided at the other end of the rod body. The large round portion includes an outer portion, an inner portion, and a joint portion. The outer portion has a tubular shape. The inner portion is provided on an inner side of the outer portion and has an annular opening to which an attaching member is attached. The joint portion elastically joins the outer portion and the inner portion. The inner portion includes a base portion and an extending portion. The base portion has the opening formed therein. The extending portion extends from the base portion toward the small round portion. The joint portion is provided between the extending portion and the outer portion.
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公开(公告)号：US11143266B2
公开(公告)日：2021-10-12
申请号：US15569762
申请日：2016-04-28
Applicant: YAMASHITA RUBBER CO., LTD.
Inventor： Hirokazu Kadowaki
Abstract: The present invention provides a liquid-sealed vibration-damping device capable of improving damping performance while preventing increase in size and weight thereof, the liquid-sealed vibration-damping device including: a first attachment member; a second attachment member; an insulator; a vibration-damping unit having a partition member; and a housing space provided in the second attachment member and housing the vibration-damping unit, wherein the second attachment member includes an outer tubular part and a fixing part protruding from the outer tubular part; and a portion of the housing space extends to the fixing part.
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公开(公告)号：US20190329640A1
公开(公告)日：2019-10-31
申请号：US16392318
申请日：2019-04-23
Applicant: YAMASHITA RUBBER CO., LTD. , HONDA MOTOR CO., LTD.
Inventor： Hirokazu Kadowaki , Masataka Hirano , Yusuke Arai
Abstract: A vibration prevention device i ncludes a vehicle body-side bracket having an inner space and a vibration prevention member disposed in the inner space. A press-fitting surface and a press-fitting groove are formed on an inner surface of the vehicle body side bracket. The press-fitting surface and the press-fitting groove extend from an edge portion of the inner space opening through an outer surface of the bracket, The vibration prevention member has a first attachment member, a second attachment member, and an insulator disposed between the first attachment member and the second attachment member. The second attachment member has an abutting portion pressed against the press-fitting surface and an attachment portion press-fitted into the press-fitting groove.
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公开(公告)号：US20170284501A1
公开(公告)日：2017-10-05
申请号：US15474537
申请日：2017-03-30
Applicant: Yamashita Rubber Co., Ltd.
Inventor： Hirokazu Kadowaki
CPC classification number: F16F13/10 , B60K5/1208 , F16F13/103 , F16F15/022
Abstract: A liquid-sealed vibration damping device is provided that allows an outer cylindrical member to have a substantially uniform interference margin in the circumferential direction, while improving an assembling property. A second mounting member mounted on a non-vibration source includes: a first frame in a cylindrical shape that is connected to a lower portion of an insulator; a second frame in a cylindrical shape that holds a partition member arranged below the insulator; and a connector that connects the first frame with the second frame. The connector includes: engaging parts that are arranged on the first frame; and elastic hook parts that are arranged on the second frame. The elastic hook parts are arranged at intervals on each of main frame parts in the circumferential direction thereof, and the elastic hook parts arranged on corners have lower rigidity than those arranged on the main frame parts.
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