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公开(公告)号：US12085074B2
公开(公告)日：2024-09-10
申请号：US17777682
申请日：2020-10-30
申请人： Hitachi Astemo, Ltd.
发明人： Shingo Tamura , Hiroyuki Yamada , Kiyotaka Ogura , Minoru Hashida
CPC分类号： F04B53/1082 , F16K27/029 , F16K31/0655 , F16K31/0675
摘要： An object of the present invention is to secure a gap between a component on a suction valve side and a component on an anchor side when a valve is closed, regardless of an integration tolerance of a plurality of components, and to be able to reliably close the valve. In an electromagnetic valve mechanism 300 including an anchor assembly 36 and a magnetic core 33 between which a magnetic attraction force acts, and a suction valve 30 configured to be able to come into and out of contact with the anchor assembly 36, the anchor assembly 36 includes a first anchor assembly component 36a having a facing surface 36ab that faces the magnetic core 33, a second anchor assembly component 36b configured integrally with the first anchor assembly component 36a, and a press-fitting portion 36c that fixes the first anchor assembly component 36a and the second anchor assembly component 36b. A press-fitting length L1 of the press-fitting portion 36c is set to a length at which the second anchor assembly component 36b and the suction valve 30 are separated from each other in a state where the suction valve 30 is closed.
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公开(公告)号：US11781513B2
公开(公告)日：2023-10-10
申请号：US17784560
申请日：2020-12-11
申请人： HITACHI ASTEMO, LTD.
CPC分类号： F02M59/462 , F02M63/007 , F02M63/0071 , F02M63/0075 , F02M63/0077 , F02M63/0078
摘要： Provided is a discharge valve mechanism capable of improving responsiveness when a discharge valve is opened, and a high-pressure fuel supply pump including the discharge valve mechanism.
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公开(公告)号：US11408386B2
公开(公告)日：2022-08-09
申请号：US17281640
申请日：2019-09-12
申请人： Hitachi Astemo, Ltd.
摘要： To suppress the possibility that a body-side holding member comes into contact with a joint portion 92 of a damper mechanism 9. damper cover that is arranged on an upstream side of a pressurizing chamber and is attached to a body to form a damper chamber, a damper mechanism that is arranged in the damper chamber, and a body-side holding member that holds the damper mechanism from the body side are provided. The body-side holding member includes a bottom surface in contact with the body and a flexible portion formed along an urging direction by being urged downward from the damper cover toward the body.
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公开(公告)号：US11713741B2
公开(公告)日：2023-08-01
申请号：US17775778
申请日：2020-10-30
申请人： HITACHI ASTEMO, LTD.
发明人： Masamichi Yagai , Kiyotaka Ogura , Shingo Tamura , Yuto Ishizuka , Hiroyuki Yamada , Kenichiro Tokuo , Minoru Hashida
CPC分类号： F02M59/46 , F02M59/462 , F02M63/0036
摘要： Provided is a fuel supply pump capable of improving welding quality while securing a function of a valve body. A fuel supply pump of the present invention includes a regulating member (discharge valve stopper 84) that guides movement of a valve body (discharge valve 82), a main body portion (body 1) provided with a valve chamber (discharge valve chamber 1d) that houses the regulating member, a sealing member (plug 85) that seals the valve chamber, and a welded portion (welded portion 86) that fixes the sealing member to the main body portion. An annular space portion (annular space portion 60) along an outer periphery of the regulating member is formed between the welded portion and the regulating member. The regulating member includes a positioning portion (fitting portion 84a) for positioning with respect to the main body portion on a side opposite to the sealing member, and a gap forming portion (gap forming portion 84c) forming an annular gap (annular gap 63) between the gap forming portion and the main body portion, and the annular gap allows a space on a side of the positioning portion in the valve chamber and the annular space portion to communicate with each other.
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