Patent ID: 9385496
Filing Date: 2016-07-05
CPC Classification: F23Q,H01R,Y10T

Claim Text:
1. A pin terminal for a glow plug comprising: a small-diameter portion which has a shaft shape extending in an axial direction and is to be connected to a conductive member for supplying electric power from an outside; a flange that is formed integrally with a front end of the small-diameter portion and is formed so as to have an outer diameter larger than an outer diameter of the small-diameter portion; a cylindrical large-diameter portion that is formed integrally with a front end of the flange so as to be shorter than the small-diameter portion in the axial direction, is formed so as to have an outer diameter larger than the outer diameter of the small-diameter portion and smaller than the outer diameter of the flange, and includes a fitting recess formed therein in a radial direction so as to be recessed toward a rear end of the large-diameter portion from a front end of the large-diameter portion in the axial direction; and an engagement portion which is positioned between a maximum diameter position of the flange and the large-diameter portion and has an outer diameter gradually reduced toward the large-diameter portion, wherein the large-diameter portion includes a crimp formation region which is formed in a range from a front end of the large-diameter portion to a front end of the engagement portion so as to have an even outer diameter and be capable of being crimped, wherein the flange includes a convex curved surface, said convex curved surface, when taken in cross-section in a direction perpendicular to the axial direction, having a circular shape, and wherein a step is formed on the convex curved surface at a side of the cylindrical large-diameter portion with respect to the maximum diameter position, said step configured to inhibit an elastically deformable sleeve that is slidable over the pin terminal from sliding off.