Abstract: A fastening structure in which a first member and a second member are mutually connected, the second member is formed with a hole, the first member is formed with a tubular projecting portion, the hole is inserted into the tubular projecting portion, a fastening member including a threaded portion having an outer diameter larger than a minimum inside diameter of the tubular projecting portion and smaller than a hole diameter of the second member is screwed into the tubular projecting portion in the axis line direction, and by this screwing of the fastening member into the tubular projecting portion, the tubular projecting portion is expanded to expand radially and outwardly, and then an outer circumference surface of the tubular projecting portion is pressed onto the peripheral wall of the hole of the second member.

Abstract: The present invention provides a pipe body of which the edge sections contact with each other stably and which can be formed only by means of only a press processing without performing a welding in mass-producing, wherein separation-prevented engagement due to deformation of at least one of the engagement sections absorbs the spring back in the press processing. Also, the present invention provides a pipe body, a metal plate for the pipe body and a forming method of the pipe body using the sheet metal for the pipe body.

Abstract: A fastening structure (10) in which a first member (11) and a second member (12) are mutually connected, the second member (12) is formed with a hole (16), the first member (11) is formed with a tubular projecting portion (14), the hole (17) is inserted into the tubular projecting portion (12), a fastening member (13) including a threaded portion 13c having an outer diameter larger than a minimum inside diameter of the tubular projecting portion (14) and smaller than a hole diameter of the second member (12) is screwed into the tubular projecting portion (14) in the axis line direction, and by this screwing of the fastening member (13) into the tubular projecting portion (14), the tubular projecting portion is expanded to expand radially and outwardly, and then an outer circumference surface of the tubular projecting portion is pressed onto the peripheral wall of the hole (17) of the second member (12).

Abstract: The present invention provides a pipe body of which the edge sections contact with each other stably and which can be formed only by means of only a press processing without performing a welding in mass-producing, wherein separation-prevented engagement due to deformation of at least one of the engagement sections absorbs the spring back in the press processing. Also, the present invention provides a pipe body, a metal plate for the pipe body and a forming method of the pipe body using the sheet metal for the pipe body.

Abstract: The present invention provides a pipe body of which the edge sections contact with each other stably and which can be formed only by means of only a press processing without performing a welding in mass-producing, wherein separation-prevented engagement due to deformation of at least one of the engagement sections absorbs the spring back in the press processing. Also, the present invention provides a pipe body, a metal plate for the pipe body and a forming method of the pipe body using the sheet metal for the pipe body.

Abstract: A method of manufacturing pipe body by which pipe body with precise quality and closely contacted seam can be made stably by pressing process, and pipe body manufactured by the method are provided. To manufacture a pipe body 1 made of metal with circular or polygonal cross section comprising a seam 5e and a wall 2 or plurality of walls 2, 3 and 4, a pipe-like intermediate product 14 is made by bending a metal plate 6 of which edges to be seam 5e have not yet contacted together. In case for prism pipe, the intermediate product comprises walls 5a, 5b to be contacted and be a wall including seam, and other walls, and both angles of both ends of one specified wall 15 of the intermediate product are larger than those of completed pipe.

Abstract: A method for attaching a part, including preparing an optical part-holding member for holding an optical part and a housing member having a bottom wall and mountable the optical part-holding member, identifying a plurality of part-attaching portions forming nodal points on the bottom wall of the housing member, and fixing the optical part-holding member for holding the optical part to the part-attaching portions by spacing from the bottom wall of the housing other than the part-attaching portions.

Abstract: The present invention provides a pipe body of which the edge sections contact with each other stably and which can be formed only by means of only a press processing without performing a welding in mass-producing, wherein separation-prevented engagement due to deformation of at least one of the engagement sections absorbs the spring back in the press processing. Also, the present invention provides a pipe body, a metal plate for the pipe body and a forming method of the pipe body using the sheet metal for the pipe body.

Abstract: A method of manufacturing pipe body by which pipe body with precise quality and closely contacted seam can be made stably by pressing process, and pipe body manufactured by the method are provided. To manufacture a pipe body 1 made of metal with circular or polygonal cross section comprising a seam 5e and a wall 2 or plurality of walls 2, 3 and 4, a pipe-like intermediate product 14 is made by bending a metal plate 6 of which edges to be seam 5e have not yet contacted together. In case for prism pipe, the intermediate product comprises walls 5a, 5b to be contacted and be a wall including seam, and other walls, and both angles of both ends of one specified wall 15 of the intermediate product are larger than those of completed pipe.

Abstract: The present invention provides a pipe body of which the edge sections contact with each other stably and which can be formed only by means of only a press processing without performing a welding mass-producing, wherein separation-prevented engagement due to deformation of at least one of the engagement sections absorbs the spring back in the press processing. Also, the present invention provides a pipe body, a metal plate for the pipe body and a forming method of the pipe body using the sheet metal for the pipe body.

Abstract: A method of manufacturing pipe body by which pipe body with precise quality and closely contacted seam can be made stably by pressing process, and pipe body manufactured by the method are provided. To manufacture a pipe body 1 made of metal with circular or polygonal cross section comprising a seam 5e and a wall 2 or plurality of walls 2, 3 and 4, a pipe-like intermediate product 14 is made by bending a metal plate 6 of which edges to be seam 5e have not yet contacted together. In case for prism pipe, the intermediate product comprises walls 5a, 5b to be contacted and be a wall including seam, and other walls, and both angles of both ends of one specified wall 15 of the intermediate product are larger than those of completed pipe.

Abstract: The present invention provides a pipe body of which the edge sections contact with each other stably and which can be formed only by means of only a press processing without performing a welding mass-producing, wherein separation-prevented engagement due to deformation of at least one of the engagement sections absorbs the spring back in the press processing. Also, the present invention provides a pipe body, a metal plate for the pipe body and a forming method of the pipe body using the sheet metal for the pipe body.

Abstract: A method of manufacturing pipe body by which pipe body with precise quality and closely contacted seam can be made stably by pressing process, and pipe body manufactured by the method are provided. To manufacture a pipe body 1 made of metal with circular or polygonal cross section comprising a seam 5e and a wall 2 or plurality of walls 2, 3 and 4, a pipe-like intermediate product 14 is made by bending a metal plate 6 of which edges to be seam 5e have not yet contacted together. In case for prism pipe, the intermediate product comprises walls 5a, 5b to be contacted and be a wall including seam, and other walls, and both angles of both ends of one specified wall 15 of the intermediate product are larger than those of completed pipe.