JPH02127376U

JPH02127376U -

Info

Publication number: JPH02127376U
Application number: JP3395089U
Authority: JP
Priority date: 1989-03-24
Filing date: 1989-03-24
Publication date: 1990-10-19

Description

[Brief explanation of drawings]

第１図は本考案に係るスポツト溶接電極を示す
断面図、第２図は第１図の要部拡大断面図、第３
図は本考案に係るスポツト溶接電極から電極チツ
プを外した状態を示す断面図、第４図及び第５図
はスポツト溶接電極の従来例を示す断面図である
。２０……スポツト溶接電極、２１……電極ホル
ダー、２２……シヤンク、２３……アダプタ、２
４……電極チツプ、２５……給水孔、２６……弁
室、２７……中空パイプ、２８……段部、２９…
…冷却水通路、３０……排水孔、３１……弁体、
３２……弁棒。 Fig. 1 is a sectional view showing a spot welding electrode according to the present invention, Fig. 2 is an enlarged sectional view of the main part of Fig. 1, and Fig. 3 is an enlarged sectional view of the main part of Fig. 1.
The figure is a sectional view showing the spot welding electrode according to the present invention with the electrode tip removed, and FIGS. 4 and 5 are sectional views showing conventional examples of the spot welding electrode. 20... spot welding electrode, 21... electrode holder, 22... shank, 23... adapter, 2
4... Electrode chip, 25... Water supply hole, 26... Valve chamber, 27... Hollow pipe, 28... Step part, 29...
...Cooling water passage, 30...Drain hole, 31...Valve body,
32... Valve rod.

Claims

[Scope of utility model registration request]

By inserting a spot welding electrode into an electrode holder with a water supply hole and a drainage hole, a valve chamber provided in the middle of the water supply hole, and the rear end of the spot welding electrode from the downstream opening end of the water supply hole toward the valve chamber, communicates with the water supply hole, and
A hollow pipe whose tip extends toward the front of the electrode holder, a valve body inserted into the valve chamber, a valve stem whose rear end is integrated with the valve body and whose tip passes through the hollow pipe, and the outer periphery of the hollow pipe. The water supply hole and the water supply hole are formed inside and outside the hollow pipe by arranging the hollow shank with its rear end fixed to the tip of the electrode holder via an adapter and the shank on the outer periphery of the hollow pipe. Consisting of a cooling water passage communicating with the drain hole, and an electrode chip that is fitted and fixed to the tip of the shank and comes into contact with the valve stem,
By setting the inner diameter of the hollow pipe to be smaller than the water supply hole, the rear end surface of the hollow pipe inserted into the water supply hole allows the valve seat of the valve body to connect to the downstream side of the valve chamber and the water supply hole. A spot welding electrode characterized in that the outer diameter of the valve body is set to be smaller than the water supply hole and larger than the inner diameter of the hollow pipe.