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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：US20230341024A1
公开(公告)日：2023-10-26
申请号：US17726555
申请日：2022-04-22
Applicant: YAMASHITA RUBBER CO., LTD.
Inventor： Hideyuki SHIMIZU , Taiki KOSEKI
IPC: F16F9/53
CPC classification number: F16F9/535 , F16F2224/045
Abstract: A magnetorheological fluid with balanced viscosity and sedimentation properties includes: a magnetic material; a medium to allow the magnetic material to be dispersed therein; a dispersant to disperse the magnetic material within the medium while forming a magnetic material holding structure to hold the magnetic material; and a reinforcing agent to reinforce the magnetic material holding structure. An amount of the magnetic material is 25 wt % to 75 wt % relative to a sum of the medium and the magnetic material. An amount of the medium is 25 wt % to 75 wt % relative to the sum of the medium and the magnetic material. An amount of the dispersant is 0.5 wt % to 6 wt % relative to the sum of the medium and the magnetic material. An amount of the reinforcing agent is 5 wt % to 300 wt % relative to a weight of the dispersant.
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公开(公告)号：US20220128112A1
公开(公告)日：2022-04-28
申请号：US17507230
申请日：2021-10-21
Applicant: YAMASHITA RUBBER CO., LTD. , HONDA MOTOR CO., LTD.
Inventor： Yuichi Nakamaru , Hideyuki Koguchi , Yasunobu Kurota , Takashi Kondo , Hideki Matsuoka
IPC: F16F7/10 , E05F5/02 , F16F15/023
Abstract: A liquid sealed damper includes: an attachment portion attached to a peripheral portion of an opening of a vehicle or an opening and closing member for covering the opening; a contact portion to which an external force is input; an insulator configured to isolate vibration and connect the attachment portion and the contact portion; a main liquid chamber in which working liquid is sealed; an auxiliary liquid chamber having a wall portion formed of a diaphragm; and an orifice passage formed in the partition member and communicating with the main liquid chamber and the auxiliary liquid chamber. The partition member has a substantially circular surface forming a wall portion of the main liquid chamber. An opening portion at one end of the orifice passage is formed in the circular surface. The opening portion is formed to extend from an outer edge portion to a central portion of the circular surface.
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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：US20190234483A1
公开(公告)日：2019-08-01
申请号：US16340888
申请日：2017-10-12
Applicant: YAMASHITA RUBBER CO., LTD.
Inventor： Yuichi Nakamaru , Hiroki Kashihara
CPC classification number: F16F15/08 , F16F1/38 , F16F1/3842 , F16F1/3863
Abstract: An object of the present invention is to provide a vibration-damping device which inhibits a flange part and an outer cylinder from breaking. The vibration-damping device includes: an inner cylinder; a resin-made outer cylinder arranged outside the inner cylinder in a radial direction; and a rubber elastic body connecting the inner cylinder and the outer cylinder.
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Patent Agency Ranking
公开(公告)号：US20170089420A1
公开(公告)日：2017-03-30
申请号：US15279106
申请日：2016-09-28
Applicant: YAMASHITA RUBBER CO., LTD.
Inventor： Hirokazu KADOWAKI , Koichi MATSUMOTO
CPC classification number: B60K5/1208 , F16F13/106
Abstract: An object of the present invention is to provide a liquid-charged antivibration device for reducing amplitude dependency. Provided is a liquid-charged antivibration device including: a liquid chamber in which operating liquid is charged; and a partitioning member which partitions the liquid chamber into a main liquid chamber and a sub liquid chamber.
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公开(公告)号：US20170074347A1
公开(公告)日：2017-03-16
申请号：US14778136
申请日：2014-03-05
Applicant: YAMASHITA RUBBER CO., LTD.
Inventor： Yutaka SHINOHARA
Abstract: A liquid-sealed vibration prevention device is provided with a main rubber-elastic body for elastically connecting an inner cylinder with an intermediate sleeve, an outer cylinder for sheathing the intermediate sleeve, and a seal rubber layer positioned on the inner-circumferential surface of the outer cylinder. The intermediate sleeve has an upper ring part, and the upper end face of the upper ring part is provided with an inclined projection part which extends diagonally upward toward the inner cylinder. Moreover, a pair of rotation-stop rubbers that holds the inclined projection part in the circumferential direction of the intermediate sleeve is provided on the inner side of an annular recess of the outer cylinder and on the upper part side of the seal rubber layer.
Abstract translation: 一种液体密封防振装置，具有用于将内筒与中间套筒弹性连接的主橡胶弹性体，用于包覆中间套筒的外筒和位于该内筒的内周面上的密封橡胶层 外筒。 中间套筒具有上环部分，并且上环部分的上端面设置有倾斜的突出部分，该倾斜突出部分朝着内筒向斜上方延伸。 此外，在外筒的环状凹部的内侧和密封橡胶层的上部侧设置有一对在中间套筒的圆周方向上保持倾斜突出部的旋转停止橡胶。
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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：US20220127890A1
公开(公告)日：2022-04-28
申请号：US17507237
申请日：2021-10-21
Applicant: YAMASHITA RUBBER CO., LTD. , HONDA MOTOR CO., LTD.
Inventor： Yuichi Nakamaru , Hideyuki Koguchi , Yasunobu Kurota , Takashi Kondo , Hideki Matsuoka
IPC: E05F3/10
Abstract: A liquid sealed damper includes: an attachment portion attached to a peripheral portion of an opening of a vehicle or an opening and closing member for covering the opening; a contact portion to which an external force is input; an insulator configured to isolate vibration and connect the attachment portion and the contact portion; a main liquid chamber in which working liquid is sealed; an auxiliary liquid chamber having a wall portion formed of a diaphragm; and an orifice passage formed in the partition member and communicating with the main liquid chamber and the auxiliary liquid chamber. The partition member has a substantially circular surface forming a wall portion of the main liquid chamber. An opening portion at one end of the orifice passage is formed in the circular surface. The opening portion is formed to extend from an outer edge portion to a central portion of the circular surface.
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