Circulating circuit member, and manufacturing method for circulating circuit member
AssigneeNippon Thermostat Co., Ltd.
InventorsTsuyoshi Kumashiro, Junichi Sato
Life of this patent
Estimating the term…
Abstract
A circulating circuit member 1 forms a part of a circulating circuit through which a fluid flows. The circulating circuit member 1 includes a pipe 4; a to-be attached member that has a sleeve portion 3 made of synthetic resin to which the pipe 4 is rotationally connected; and a pin 6 that is inserted from the sleeve portion 3 to the pipe 4, in which a pin insertion hole 5 of the sleeve portion 3 through which the pin 6 is inserted is formed by a mold that is pulled out from an inside of the sleeve portion 3.
Claims6
A circulating circuit member that forms a part of a circulating circuit through which a fluid flows, comprising:
- a pipe;
- a to-be attached member that has a sleeve portion made of synthetic resin to which the pipe is rotationally connected;
- and
- a pin that is inserted from the sleeve portion to the pipe,
- wherein a pin insertion hole of the sleeve portion through which the pin is inserted is formed by a mold that is pulled out from an inside of the sleeve portion;
- wherein the pin is formed in a C-shaped cross section by curving a thin plate into a cylindrical shape;
- and
- wherein an inner wall of the pin insertion hole includes a taper-shaped portion that gradually increases in diameter from an opening edge on an outside of the sleeve portion to the inside of the sleeve portion.
A circulating circuit member that forms a part of a circulating circuit through which a fluid flows, comprising:
- a pipe;
- a to-be attached member that has a sleeve portion made of synthetic resin to which the pipe is rotationally connected;
- and
- a pin that is inserted from the sleeve portion to the pipe,
- wherein an inner wall of a pin insertion hole of the sleeve portion through which the pin is inserted includes a taper-shaped portion that gradually increases in diameter from an opening edge on an outside of the sleeve portion to an inside of the sleeve portion;
- and
- wherein the pipe is provided with a claw portion that protrudes outward in a radial direction,
- an inner peripheral surface of the sleeve portion is provided with a vertical groove portion accepting the claw portion and a horizontal groove portion continuous to the vertical groove portion and extending in a circumferential direction,
- the claw portion is fitted to the horizontal groove portion to prevent the pipe from falling off from the sleeve portion, and
- the pin insertion hole is provided at the same phase as or an overlapping phase with the vertical groove portion or the horizontal groove portion in a circumferential direction of the sleeve portion.
A circulating circuit member that forms a part of a circulating circuit through which a fluid flows, comprising:
- a pipe;
- a to-be attached member that has a sleeve portion made of synthetic resin to which the pipe is rotationally connected;
- and
- a pin that is inserted from the sleeve portion to the pipe,
- wherein an inner wall of a pin insertion hole of the sleeve portion through which the pin is inserted includes a taper-shaped portion that gradually increases in diameter from an opening edge on an outside of the sleeve portion to an inside of the sleeve portion;
- and
- wherein the pin is formed in a C-shaped cross section by curving a thin plate into a cylindrical shape.
Dependencies are inferred from the claim text.