Filling port structure for pressure fluid

摘要

A first fluid channel of a first body has a first inner diameter part and a second inner diameter part in an order that an inner diameter becomes smaller from a side where a nozzle is inserted. A second body has a second fluid channel capable of communicating with the first fluid channel and further has a first outer diameter part and a second outer diameter part which are inserted in the second inner diameter part in an order that an outer diameter becomes larger from the first fluid channel side. When the tip part of the second body is inserted in the first fluid channel, a wall surface provided at an end of the second inner diameter part along an axial direction, an end surface of the tip part of the second body and an inner circumferential surface of the second inner diameter part form a sealing groove.

主权项

1. A filling port structure for pressure fluid that is provided on a pressure fluid utilization apparatus, the filling port structure having a pair of a first body and a second body, the second body being formed separately from the first body, wherein
the first body includes a first fluid channel in which a nozzle is inserted from an outside of the pressure fluid utilization apparatus, the first fluid channel has a first inner diameter part and a second inner diameter part in an order that an inner diameter becomes smaller from a side where the nozzle is inserted; the first inner diameter part and the second inner diameter part have inner circumferential surfaces on which seal assembly surfaces are formed, respectively; the second body has a second fluid channel that is capable of communicating with the first fluid channel when the second body is combined with the first body, and has a second body fixing part that fixes the pressure fluid utilization apparatus and the filling port; the second body has a first outer diameter part and a second outer diameter part that have outer diameters inserted in the second inner diameter part and that are successive from a tip part in an order that a diameter becomes larger from the first fluid channel side; and a wall surface that is provided at an end along an axial direction of the second inner diameter part, an end surface of the tip part of the second body and an inner circumferential surface of the second inner diameter part form a sealing groove when the tip part of the second body is inserted in the first fluid channel.