JPH0466036U

JPH0466036U -

Info

Publication number: JPH0466036U
Application number: JP10834190U
Authority: JP
Priority date: 1990-10-15
Filing date: 1990-10-15
Publication date: 1992-06-10

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示すものでテス
トボタンを取り付ける前の要部斜視図、第２図は
ロツク状態のテストボタンの取付状態を示す要部
断面図、第３図はロツク解除の状態を示す第２図
と同じ要部断面図、第４図はこの考案の他の実施
例を示すものでテストボタンを取り付ける前の要
部斜視図、第５図はロツク状態のテストボタンの
取付状態を示す要部断面図、第６図はロツク解除
の状態を示す要部断面図、第７図は従来のものを
示す外観斜視図、第８図は第７図の線−の要
部断面図、第９図は第８図の内部構造を示す要部
斜視図、第１０図は第９図の釈放形電磁装置を示
す斜視図、第１１図は第１０図を反対側からみた
斜視図、第１２図は第１０図の正面図、第１３図
は第１２図の上面図、第１４図は第１３図の線
−の断面図、第１５図はスライダーを外し
た状態を示す正面図、第１６図は第１５図の上面
図、第１７図はスライダーの上面図、第１８図は
第１７図を上からみた図、第１９図は第１８図の
線−の断面図、第２０図はスライダーと
ボタンホルダとを外した状態を示す正面図、第２
１図は第２０図の上面図、第２２図はボタンホル
ダの斜視図、第２３図は第１２図から釈放位置に
動作した状態を示す正面図、第２４図は漏電遮断
器の回路およびそのテスト回路を概略的に示す図
である。図において、１は遮断器ケース、１Ａは表示部
、３は釈放形電磁装置、９は可動導板、９ａは可
動導板の押圧面、１０はテストボタン、１０ａは
テストボタンの押圧係合部、１０ｂはテストボタ
ンの頭部、１０ｃはテストボタンの頭部背面、１
１はテストボタン孔、３３は主回路、３４は開閉
接点、３５は零相変流器、３８は引外しコイル、
４０はロツク用凸部、４０ａは凸部のロツク面、
４１は逃がし部、４２，４６は位置決め用凹み、
４３，４７は位置決め用突起を示す。なお、各図
中同一符号は同一または相当部分を示す。 Figure 1 shows an embodiment of this invention, and is a perspective view of the main part before the test button is attached. Figure 2 is a sectional view of the main part showing the test button in the locked state and the attached state. Figure 3 is the unlocked state. Fig. 4 is a perspective view of the main part before the test button is attached, showing another embodiment of the invention, and Fig. 5 shows the test button in the locked state. Fig. 6 is a sectional view of the main part showing the installed state, Fig. 6 is a sectional view of the main part showing the unlocked state, Fig. 7 is an external perspective view showing the conventional one, and Fig. 8 is the main part indicated by the line - in Fig. 7. 9 is a perspective view of the main part showing the internal structure of FIG. 8, FIG. 10 is a perspective view of the release type electromagnetic device of FIG. 9, and FIG. 11 is a perspective view of FIG. 10 from the opposite side. Figure 12 is a front view of Figure 10, Figure 13 is a top view of Figure 12, Figure 14 is a sectional view taken along the line - in Figure 13, and Figure 15 is a front view with the slider removed. Figure 16 is a top view of Figure 15, Figure 17 is a top view of the slider, Figure 18 is a view of Figure 17 viewed from above, Figure 19 is a sectional view taken along line - in Figure 18, Figure 20 is a front view showing the state with the slider and button holder removed;
Fig. 1 is a top view of Fig. 20, Fig. 22 is a perspective view of the button holder, Fig. 23 is a front view showing the state in which it has been moved to the release position from Fig. 12, and Fig. 24 shows the circuit of the earth leakage breaker and its circuit. FIG. 2 is a diagram schematically showing a test circuit. In the figure, 1 is a circuit breaker case, 1A is a display part, 3 is a release type electromagnetic device, 9 is a movable conductive plate, 9a is a pressing surface of the movable conductive plate, 10 is a test button, and 10a is a press engagement part of the test button. , 10b is the head of the test button, 10c is the back of the head of the test button, 1
1 is a test button hole, 33 is a main circuit, 34 is a switching contact, 35 is a zero-phase current transformer, 38 is a tripping coil,
40 is a locking protrusion, 40a is a locking surface of the protrusion,
41 is a relief part, 42 and 46 are positioning recesses,
Reference numerals 43 and 47 indicate positioning protrusions. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims

[Claims for Utility Model Registration] (1) A zero-phase current transformer that detects leakage current in the main circuit, and when an output is generated in this zero-phase current transformer, it is energized to open the switching contacts of the main circuit. In an earth leakage circuit breaker equipped with a tripping coil and a test button whose head protrudes from a test button hole in a display section of the circuit breaker case and is operated by pushing the test button hole, a locking convex portion is provided on the inner peripheral surface of the test button hole. A relief part is provided on the back of the head of the test button to release the convex part, and in a rotational position of the test button where the relief part does not match the convex part, the back of the head of the test button is a positioning protrusion that engages with the protrusion to lock the pushing operation of the test button, and further engages the locking surface of the locking protrusion and the back surface of the head of the test button in the locked position; An earth leakage breaker characterized by having recesses in each. (2) The earth leakage interrupter according to claim 1, wherein the positioning protrusion and the recess are respectively provided on the pressing surface of the movable conductive plate that presses the test button to the non-operating position and on the pressing engagement portion of the test button. vessel.