Connection member and connection unit
A connector includes a flow path extending in an axial direction along a central axis, a body including a through hole extending in the axial direction, a pipe including a through hole extending in the axial direction, and a seal including a sealing material between the body and the pipe. The body includes a body-side opposing surface opposing the pipe. The pipe includes a pipe-side opposing surface opposing the body. The seal is between the body-side opposing surface and the pipe-side opposing surface. The seal includes a reservoir in which the sealing material collects between the body-side opposing surface and the pipe-side opposing surface.
1 . A connector comprising:
a flow path extending in an axial direction along a central axis;
a body including a through hole extending in the axial direction;
a pipe including a through hole extending in the axial direction; and
a seal including a sealing material between the body and the pipe; wherein the body includes a body-side opposing surface opposing the pipe;
the pipe includes a pipe-side opposing surface opposing the body;
the seal is between the body-side opposing surface and the pipe-side opposing surface; and
the seal includes a reservoir in which the sealing material collects between the body-side opposing surface and the pipe-side opposing surface;
at least one of the body-side opposing surface and the pipe-side opposing surface includes a cutout surface obtained by cutting out a plane parallel to the axial direction or a radial direction orthogonal to the axial direction;
the seal includes a plurality of reservoirs that include:
an outer diameter-side reservoir on an outermost side in a radial direction among the plurality of reservoirs; and
an inner diameter-side reservoir on an innermost side in a radial direction among the plurality of reservoirs;
a plurality of cutout surfaces define the cutout surface;
the plurality of cutout surfaces include:
an outer diameter-side cutout surface at an outer end in a radial direction of the body-side opposing surface or the pipe-side opposing surface among the plurality of cutout surfaces; and
an inner diameter-side cutout surface communicating with the through hole among the plurality of cutout surfaces;
when the outer diameter-side reservoir and the inner diameter-side reservoir are exposed in the radial direction, a slant with respect to the axial direction of the inner diameter-side cutout surface is smaller than a slant with respect to the axial direction of the outer diameter-side cutout surface; and
when the outer diameter-side reservoir and the inner diameter-side reservoir are exposed in the axial direction, a slant with respect to the radial direction of the inner diameter-side cutout surface is smaller than a slant with respect to the radial direction of the outer diameter-side cutout surface.
2 . The connector according to claim 1 , further comprising a holder to hold positions of the body and the pipe.
3 . The connector according to claim 2 , wherein the holder includes a claw extending from one portion of the body and the pipe and hooking on another portion of the body and the pipe;
the claw includes:
a first portion extending in the axial direction from the one portion; and
a second portion extending in a circumferential direction from a tip end of the first portion; and
the second portion opposes the another portion in the axial direction.
4 . The connector according to claim 1 , wherein the body-side opposing surface and the pipe-side opposing surface oppose each other in the axial direction and a radial direction orthogonal to the central axis.
5 . The connector according to claim 4 , wherein
the seal includes:
a first plate-shaped portion positioned between a side surface of the body and an outer peripheral surface of the pipe opposing each other in the axial direction;
a second plate-shaped portion coupled to the first plate-shaped portion and positioned between an inner peripheral surface of the body and an outer peripheral surface of the pipe opposing each other in the radial direction; and
a third plate-shaped portion coupled to the second plate-shaped portion and positioned between an inner peripheral surface of the body and a side surface of the pipe opposing each other in the axial direction.
6 . The connector according to claim 4 , wherein
the seal further includes a plate-shaped portion positioned between an inner peripheral surface of the body and an outer peripheral surface of the pipe opposing each other in the radial direction; and
the reservoir includes at least one of a reservoir positioned on one axial side of the plate-shaped portion and a reservoir positioned on another axial side of the plate-shaped portion.
7 . The connector according to claim 4 , wherein
the seal further includes a plate-shaped portion positioned between an inner peripheral surface of the body and an outer peripheral surface of the pipe opposing each other in the radial direction;
the reservoir includes:
one axial side reservoir positioned on one side in an axial direction of the plate-shaped portion; and
another axial side reservoir positioned on another side in an axial direction of the plate-shaped portion; and
a sectional area of the one axial side reservoir is larger than a sectional area of the axial other side reservoir.
8 . The connector according to claim 4 , further comprising:
an elastic portion in the flow path; and
a valve in the through hole and movable in the axial direction in accordance with the elastic portion in contact with the elastic portion; wherein
the reservoir is positioned outside in the radial direction relative to the elastic portion and the valve.
9 . The connector according to claim 8 , wherein the valve closes an opening of the body.
10 . The connector according to claim 8 , wherein
the pipe includes a column; and
the valve closes the flow path together with the column.
11 . The connector according to claim 1 , wherein a difference between a solubility parameter of the sealing material and a solubility parameter of a fluid flowing through the flow path is 1 or greater.
12 . A connection assembly comprising:
a first connector and a second connector; wherein
each of the first connector and the second connector is provided with a flow path extending in an axial direction along a central axis;
the first connector includes:
a body including a through hole extending in the axial direction;
a pipe including a through hole extending in the axial direction;
a seal including a sealing material between the body and the pipe;
an elastic portion in the flow path; and
a valve in the through hole and movable in the axial direction in accordance with the elastic portion in contact with the elastic portion;
in the first connector:
the body includes a body-side opposing surface opposing the pipe;
the pipe includes a pipe-side opposing surface opposing the body;
the seal is between the body-side opposing surface and the pipe-side opposing surface;
the seal includes a reservoir in which the sealing material collects between the body-side opposing surface and the pipe-side opposing surface; and
the valve closes an opening of the body;
the second connector includes:
a body including a through hole extending in the axial direction;
a pipe including a through hole extending in the axial direction;
a seal including a sealing material sealing between the body and the pipe;
an elastic portion located in the flow path; and
a valve that is located in the through hole and movable in the axial direction in accordance with the elastic portion in contact with the elastic portion; and
in the second connector:
the body includes a body-side opposing surface opposing the pipe;
the pipe includes a pipe-side opposing surface opposing the body;
the seal is between the body-side opposing surface and the pipe-side opposing surface;
the seal includes a reservoir in which the sealing material collects between the body-side opposing surface and the pipe-side opposing surface;
the pipe includes a column; and
the valve closes a flow path together with the column.