An air bypass valve device includes a case 3 and a valve assembly 5, a tenon 3l is provided to one of the case 3 and the valve assembly 5, and a tenon groove 8e is provided to the other, such that the case 3 and the valve assembly 5 are united by a tenon insertion structure.
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1. An air bypass valve device, comprising: a valve assembly in which three components of a valve for opening and closing a pressure port on a turbo charge side, a holder, and a diaphragm interposed between the valve and the holder are integrally formed;a case in which the valve assembly is fitted, t
1. An air bypass valve device, comprising: a valve assembly in which three components of a valve for opening and closing a pressure port on a turbo charge side, a holder, and a diaphragm interposed between the valve and the holder are integrally formed;a case in which the valve assembly is fitted, the case having a bottomed cylinder body, formed on an inner surface of the case, with an entrance and a tenon groove that are provided at a lower bottom of the bottomed cylinder body;a compression spring provided between the valve assembly and the case;the valve having a columnar body formed at the central part of the valve and extending toward the case, the columnar body having a tenon radially protruding from a peripheral surface of an upper end portion of the columnar body; andthe bottomed cylinder body having a tenon fixing concave part for receiving the tenon, the tenon fixing concave part being provided on the lower bottom of the bottomed cylinder body at a position different from that of the tenon groove, and extending in either or both of the clockwise and counter clockwise directions of the bottomed cylinder body, thereby allowing a movement of the tenon in the tenon fixing concave part in the clockwise/counter clockwise directions,wherein the tenon is received in the tenon fixing concave part by inserting the columnar body into the entrance with the tenon aligned with the tenon groove against an elastic force of the compression spring, rotating the columnar body with respect to the bottomed cylinder body, and releasing the columnar body. 2. The air bypass valve device according to claim 1, wherein the entrance is widely opened compared to the circumference of the columnar body for easy insertion of the columnar body. 3. The air bypass valve device according to claim 1, wherein a pressure port for communicating with the inside of a bottomed cylinder body is integrally formed with the case. 4. The air bypass valve device according to claim 3, wherein a pressure introducing groove is formed in the bottomed cylinder body. 5. An air bypass valve device, comprising: a valve assembly in which three components of a valve for opening and closing a pressure port on a turbo charge side, a holder, and a diaphragm interposed between the valve and the holder are integrally formed;a case in which the valve assembly is fitted, the case having a columnar body formed on an inner surface of the case and extending toward the valve assay, the columnar body having a tenon radially protruding from a peripheral surface of a lower end portion of the columnar body;a compression spring provided between the valve assembly and the case;a bottomed cylinder body formed at a central part of the holder, with an entrance and a tenon groove that are provided at an upper bottom of the cylinder body, the bottomed cylinder body having a tenon fixing concave part for receiving the tenon, the tenon fixing concave part being provided on the upper bottom of the bottomed cylinder body at a position different from that of the tenon groove, and extending in either or both of the clockwise and counter clockwise directions of the bottomed cylinder body, thereby allowing a movement of the tenon in the tenon fixing concave part in the clockwise/counter clockwise directionswherein the tenon is received in the tenon fixing concave part by inserting the columnar body into the opening with the tenon aligned with the tenon groove against an elastic force of the compression spring, rotating the columnar body with respect to the bottomed cylinder body, and releasing the columnar body. 6. The air bypass valve device according to claim 5, wherein the bottomed cylinder body has a side wall that defines the tenon fixing groove and extended to the upper bottom controlling a rotation of the tenon in either of the clockwise and counter clockwise direction. 7. The air bypass valve device according to claim 5, wherein the entrance is widely opened compared to the circumference of the columnar body for easy insertion of the columnar body. 8. An air bypass valve device, comprising: a valve assembly in which three components of a valve for opening and closing a pressure port on a turbo charge side, a holder, and a diaphragm interposed between the valve and the holder are integrally formed;a case in which the valve assembly is fitted, the casing having a columnar body formed on an inner surface of the case;at least one tenon symmetrically protruding from a peripheral surface of a lower end portion of the columnar body;a bottomed cylinder body formed in a holder positioned at a central part on a surface of the valve;at least one tenon groove formed on an inner surface of the cylinder body, the tenon groove extending along a first direction and having a terminal end; andat least one tenon sliding groove formed on an inner surface of the cylinder body, the tenon fixing groove, the tenon sliding groove extending along first and second directions and having a first end connected to the terminal end of the tenon groove and an unpenetrated terminal end;wherein the tenon is configured to be inserted into the tenon groove and slide along the tenon sliding groove thereby rotating the case and uniting the valve assembly and the case.
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