JPH0160787U

JPH0160787U -

Info

Publication number: JPH0160787U
Application number: JP15550687U
Authority: JP
Priority date: 1987-10-09
Filing date: 1987-10-09
Publication date: 1989-04-18
Also published as: JPH0324299Y2

Description

[Brief explanation of the drawing]

添付図面は本考案の実施例を示し、第１図は板
状ワークに対してナツトが正規の位置に供給され
た時の板状ワークとナツトを溶接する図、第２図
は上部電極本体の断面図、第３図は電気絶縁リン
グ本体の断面図、第４図はミス溶接防止用リング
本体の断面図、第５図はナツト本体、第６図は板
状ワークに対してナツトが逆の位置に供給された
時の板状ワークとナツトを溶接する図、第７図は
板状ワークに対してナツトが逆の位置に供給され
た時、板状ワークとナツトを溶接する所を示した
従来図である。図中１は上部電極、２は下部電極
、３は上部電極棒、４は上部電極本体、５は下部
電極棒、６は下部電極本体、７は板状ワーク、８
はナツト、９はナツト下穴、１０はナツト穴、１
１は段部、１２は大径部、１３は小径部、１４は
電気絶縁リング、１５はミス溶接防止用リング、
１６は隙間、Ｓはミス溶接防止用リング外径、Ｑ
はミス溶接防止用リング内径、Ｎはナツト頭部、
Ｍはナツト底部、Ｐは電極本体内径である。 The attached drawings show an embodiment of the present invention, and Fig. 1 is a diagram of welding a plate-shaped workpiece and a nut when the nut is supplied to the normal position with respect to the plate-shaped workpiece, and Fig. 2 is a diagram showing the welding of the plate-shaped workpiece and the nut. 3 is a sectional view of the electrical insulating ring body, Figure 4 is a sectional view of the ring body for preventing mistake welding, Figure 5 is the nut body, and Figure 6 is a cross-sectional view of the nut when it is reversed with respect to the plate-like workpiece. Fig. 7 shows welding of a plate work and a nut when the nut is fed in the opposite position to the plate work. It is a conventional diagram. In the figure, 1 is the upper electrode, 2 is the lower electrode, 3 is the upper electrode rod, 4 is the upper electrode body, 5 is the lower electrode rod, 6 is the lower electrode body, 7 is the plate-shaped workpiece, 8
is the nut, 9 is the nut pilot hole, 10 is the nut hole, 1
1 is a stepped portion, 12 is a large diameter portion, 13 is a small diameter portion, 14 is an electrical insulation ring, 15 is a ring for preventing welding errors,
16 is the gap, S is the outer diameter of the ring to prevent welding mistakes, Q
is the inner diameter of the ring to prevent welding mistakes, N is the nut head,
M is the bottom of the nut, and P is the inner diameter of the electrode body.

Claims

[Scope of utility model registration request]

The nut hole 10 is electrically connected to the nut pilot hole 9 of the plate-shaped workpiece 7, the nut 8 is positioned on the surface of the plate-shaped workpiece 7, and electricity is applied through the upper electrode 1 and the lower electrode 2 to heat the nut by resistance heating. In the case where the diameter of the head of the nut 7 is N and the diameter of the bottom larger than the above diameter is M in the electrode for welding the pilot hole nut 9 for welding the nut 8 to the plate-shaped workpiece 7. , the diameter P of the upper electrode body 4 is the diameter N of the head of the nut.
An electrical insulating ring 14 is inserted around the upper electrode main body 4, and a mistake welding prevention ring 15 is inserted around it, and the tip of the mistake welding prevention ring 15 is is slightly ahead of the tip of the electrode body, and the inner diameter Q of the error welding prevention ring 15 is equal to the diameter N of the head of the nut 8.
An electrode for welding a pilot hole nut, characterized in that the outer diameter S is set to be equal to or smaller than the diameter M of the bottom of the nut 8.