公开(公告)号：US10598167B2

公开(公告)日：2020-03-24

申请号：US15328204

申请日：2015-07-22

Applicant: NTN CORPORATION

Inventor： Takuya Ishii ,  Satoru Fukuzawa ,  Hirohisa Abe ,  Akihiro Oomori

IPC: F04B27/08 ,  F04B1/20 ,  F04B1/14 ,  F01B3/00 ,  F04B27/10 ,  F04B1/2092 ,  F04B1/2085 ,  F04B1/148

Abstract: A swash plate compressor in which a lubricating film is not formed on a sliding contact surface of the swash plate and the piston owing to the use of the semispherical shoe. The semispherical shoe (4) is subjected to sliding contact with the swash plate of the swash plate compressor and the piston thereof. A base material (5) consists of a metallic member having a resin layer (6b) formed on a surface of a planar part (4b) that is subjected to sliding contact with the swash plate. A resin layer (6a) is formed on a surface of a spherical part (4a) to be subjected to sliding contact with the piston. The resin layer (6a) and the resin layer (6b) are integral with each other. At least one portion of the base material (5) is exposed.

公开(公告)号：US10695965B2

公开(公告)日：2020-06-30

申请号：US14909076

申请日：2014-07-28

Applicant: NTN CORPORATION

Inventor： Hirohisa Abe ,  Satoru Fukuzawa

IPC: B29C45/38 ,  B29C45/27 ,  C08J5/00

Abstract: A method for making a synthetic resin injection molded body that is gate-cut by die opening after injection molding by means of a pinpoint gate 9. A cavity 10 is filled with a molten resin, from a first sprue 6 that is provided coaxially with the injection direction of the molten resin, through a runner 7 that is provided in the perpendicular direction to the first sprue 6, via a pinpoint gate 9 that is formed on a tip part of a second sprue 8 that is provided horizontally to the injection direction of the molten resin, from a gate port 9a of the pinpoint gate 9 formed on a cavity plane that is in parallel with the die opening direction; after cooling, gate cutting is performed by means of die opening; and a molded body is taken out in an ejection step.

公开(公告)号：US10670074B2

公开(公告)日：2020-06-02

申请号：US15505884

申请日：2015-08-21

Applicant: NTN CORPORATION

Inventor： Takuya Ishii ,  Satoru Fukuzawa ,  Hirohisa Abe ,  Akihiro Oomori

IPC: F16C29/02 ,  F04B27/12 ,  F04B27/10 ,  B29C44/42 ,  B29C45/00 ,  B29C45/17 ,  B29C45/56 ,  F04B27/08 ,  F16C33/20 ,  B29K101/10

Abstract: The present invention provides a method for producing a durable semispherical shoe which can be prevented from being subjected to seizure even in a dry lubrication state in which there is no lubricating oil at a start time of an operation of a swash plate compressor, can be restrained from deteriorating in its lubricating property due to generated frictional heat, and can be restrained from deteriorating in its strength at a production time and an injection molding die. A semispherical shoe (4), for a swash plate compressor, to be produced by the production method has a base material (5), consisting of a hard material, which has a hollow part along a central axis thereof and a resin layer, consisting of a resin composition, which is formed on a surface of a planar part, disposed on a periphery of the base member, which is to be subjected to sliding contact with the swash plate and on a surface of a spherical part, disposed on the periphery thereof, which is to be subjected to sliding contact with a piston. A resin-filled portion (8) where the resin composition is filled and an empty portion where the resin composition is not filled are formed in the hollow part of the base material. The resin-filled portion (8) and the resin layer are formed by injecting and filling the resin composition into a portion to be formed as the resin-filled portion (8) with the base material (5) being disposed inside a cavity (22) of the injection molding die.