Nippon Pillar Packing Co., Ltd.

Tomohiro Adachi

Atsushi Nakano

Tomoyuki Koike

Hiroki Sakamoto

Daisuke Urata

Yoshinobu Toda

Keisho Morimoto

Toshihide Iida

Kazukiyo Teshima

Motoaki Naruo

Kiyotaka Ohmae

Masayoshi Katsura

Shingo Higuchi

Fluid block

An integrated blockserving as a fluid device includes: a flow portopen to form one end of a passage P; an annular groovearranged along an outer circumferential edge of the flow port, the annular groovebeing open so as to insert the gaskettherein; a first tapered portionarranged on a radially-inner side interior wallof the annular grooveand sloped radially outward from an open end of the annular groovein a depth direction of the annular groove; and a guidearranged on a radially-outer side interior wallof the annular groove, extending throughout a predetermined range D from the open end of the annular groovein the depth direction, and having a larger diameter than an outer circumferential surfaceof a second sealing portionof the gasket

Fluid device

A resin joint includes a joint body having a flow path, sleeves, and union nuts that fix tubes to the joint body. The joint body has a body portion with a curved inner peripheral surface and a straight portion protruding from an end portion of the body portion. The straight portion has outer and inner cylindrical portions radially arranged inside the outer cylindrical portion. An end portion of the inner cylindrical portion is positioned closer to the body portion than is an end portion of the outer cylindrical portion. A groove portion extending parallel with the outer and inner cylindrical portions in an axial direction is formed between an inner peripheral surface of the outer cylindrical portion and an outer peripheral surface of the inner cylindrical portion. The tube is fixed to the joint body such that a press-fit portion of the sleeve is press-fitted in the groove portion.

Resin joint, channel block, and fluid control device

A gasket-mounting structure includes a mounting member and a gasket. The mounting member includes a first base, an outer sleeve protruding from the first base, an inner sleeve protruding from the first base in the same direction of the outer sleeve radially inside the outer sleeve, and a groove surrounded by the first base, the outer sleeve, and the inner sleeve. The gasket includes an annular second base, an annular outer protrusion extending from the second base to be pressed in the groove, and an annular inner protrusion extending from the second base to be axially pressed on the inner sleeve radially inside the outer protrusion such that the inner sleeve is radially placed between the outer protrusion and the inner protrusion.

Gasket-mounting structure

A structure for mounting a gasket on a block includes a block with a fluid channel and an annular gasket surrounding an opening of the fluid channel. The block has an annular inner wall and an annular outer wall. The annular inner wall is made of resin and located radially outside the opening of the fluid channel. The annular outer wall is made of resin and located radially outside the annular inner wall. The annular inner wall and the annular outer wall allow an axial side of the gasket to be press-fitted therebetween and are elastically deformable in their radial directions.

Structure for mounting gasket on block

A gasket includes a first slope at a first axial end. The fluid device includes a second slope that contacts the first slope. The first slope and the second slope have different gradients. The first slope allows at least the first axial end to be deformed along the second slope. The first slope contacts the second slope with a gradient that varies depending on a gradient of the second slope to seal a gap between the first slope and the second slope.

Gasket

A structure allowing a gasket to be mounted on a fluid device is provided. The gasket includes a ring with a first annular slope at a first axial end. The fluid device includes an inner sleeve with a second annular slope and an outer sleeve radially outside the inner sleeve. An outer periphery of the ring includes an annular contact face that contacts the outer sleeve and an annular non-contact face radially separated from the outer sleeve. The first annular slope contacts an outer periphery of the second slope.

A structure allowing a gasket to be mounted on a fluid device is provided. The gasket includes an annular attaching portion that has a first slope at an axial end. The fluid device includes an annular attached portion with a second slope that contacts the first slope. The first slope at least partially includes a contact area that contacts the second slope to seal a gap between the first slope and the second slope. The contact area has an annular bulge protruding toward the second slope in contrast to other portions of the first slope so that the bulge is the earliest contact portion with the second slope when the contact area is brought into contact with the second slope.

Growing community of inventors

Osaka, Japan

Tomohiro Adachi