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5. 发明公开

EP3604782A1 SLIDING MEMBER AND PISTON RING 审中-实审
公开(公告)号：EP3604782A1
公开(公告)日：2020-02-05
申请号：EP18778329.5
申请日：2018-01-22
申请人： Kabushiki Kaisha Riken
发明人： SHINOHARA, Akio
IPC分类号： F02F5/00 , C23C14/06 , F16J9/26
摘要： The disclosure relates to a sliding member. This sliding member includes a base material and an amorphous hard carbon film formed on a surface of the base material and the amorphous hard carbon film has a graded structure in which a sp 2 ratio increases from an inner surface side corresponding to the base material side toward an outer surface side. Further, the disclosure relates to a piston ring which includes the sliding member.

6. 发明公开

EP3594307A1 SEALING MEMBER 审中-实审转让
公开(公告)号：EP3594307A1
公开(公告)日：2020-01-15
申请号：EP18775222.5
申请日：2018-03-27
申请人： Kabushiki Kaisha Riken , Sanpo Rubber Industry Co., Ltd.
发明人： OWADA, Akihiro , SHINADA, Takashi , OKAMOTO, Takuya , IRIE, Shiori , GUNJI, Yasuhiro , YAMAMOTO, Noriaki , YANAGAWA, Hajime
IPC分类号： C09K3/10 , C08K3/04 , C08L27/12 , C08L101/00 , F16J15/16
摘要： [Object] To provide a ring-shaped sealing member having both the sealing property and slidability.
[Solving Means] A sealing member is formed in a ring shape and has a sliding surface. The sealing member includes: 100 parts by weight of fluorine rubber; and 0.5 to 50 (inclusive) parts by weight of a particulate resin. The particulate resin includes a compatible portion and a lubrication portion, the compatible portion having compatibility with the fluorine rubber, the lubrication portion having lubricity with respect to the fluorine rubber. A Shore A hardness measured using the sliding surface as a pressing surface is not less than 80. In this sealing member, since rubber elasticity is achieved by the fluorine rubber, a favorable sealing property can be realized. Further, it is possible to impart high slidability to the sealing member by the action of the lubrication portion of the particulate resin. Therefore, this sealing member has both the sealing property and slidability.

7. 发明公开

EP3499095A1 PISTON RING 审中-公开
公开(公告)号：EP3499095A1
公开(公告)日：2019-06-19
申请号：EP17841340.7
申请日：2017-07-25
申请人： Kabushiki Kaisha Riken
发明人： SHIMIZU Hiroshi , NAKAMURA Daisuke
IPC分类号： F16J9/16 , F02F5/00
摘要： In a joint section 3 of a piston ring 1, on a side surface 2a of a body 2, a first protrusion portion 13 and a first reception portion 14 are provided, on a side surface 2b of the body 2, a second protrusion portion 15 and a second reception portion 16 are provided, on an inner circumferential surface 2c side of the body 2, a first male portion 21 and a first female portion 22 are provided, and, on an outer circumferential surface 2d side of the body 2, a second male portion 23 and a second female portion 24 are provided. The first male portion 21 has an inclined surface 21b which faces the outer circumferential surface 2d side and is inclined with respect to a mating surface 21a with respect to the first female portion 22 so that a front end of the first male portion 21 tapers, and the second male portion 23 has an inclined surface 23b which faces the inner circumferential surface 2c side and is inclined with respect to a mating surface 23a with respect to the second female portion 24 so that a front end of the second male portion 23 tapers.

9. 发明公开

EP3460095A1 SLIDING MEMBER 有权
公开(公告)号：EP3460095A1
公开(公告)日：2019-03-27
申请号：EP18195587.3
申请日：2018-09-20
申请人： Kabushiki Kaisha Riken
发明人： FUJITA, Satoru , UEDA, Terushige
IPC分类号： C23C18/16 , C23C18/50 , C23C18/54 , F01C21/08 , F16J9/26 , F16C33/12
摘要： The present disclosure provides a sliding member having an abrasion resistance further improved by a plating film not containing B. The sliding member of the present disclosure includes a base material and a Ni-P-Co plating film formed on the base material, wherein the Ni-P-Co plating film contains 3.4 mass% or more and less than 10.0 mass% Co and 0.05 mass% or more and 5.0 mass% or less P, with the balance being Ni and unavoidable impurities.

10. 发明公开

EP3406865A1 SINTERED VALVE SEAT 有权
公开(公告)号：EP3406865A1
公开(公告)日：2018-11-28
申请号：EP17870625.5
申请日：2017-12-01
申请人： Kabushiki Kaisha Riken
发明人： HASHIMOTO Kimiaki
IPC分类号： F01L3/02 , B22F5/10 , B22F7/00 , B22F7/02 , C22C1/05 , C22C9/00 , C22C9/02 , C22C19/07 , C22C27/04 , C22C38/00 , C22C38/12 , C22C38/22 , C22C38/24 , C22C38/36
摘要： To provide a sintered valve seat having excellent valve coolability making it usable for high-efficiency engines, as well as excellent deformation resistance, wear resistance and detachment resistance, the valve seat is provided with a two-layer structure having a seat layer repeatedly abutting a valve face, and a support layer abutting bottom and inner peripheral surfaces of a valve-seat-press-fitting opening of a cylinder head; the seat layer containing at least one selected from Co-based hard particles and Fe-based hard particles in a matrix of Cu or its alloy; and the support layer containing at least one selected from Fe particles and Fe alloy particles in a matrix of Cu or its alloy.

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