JPH0466037U

JPH0466037U -

Info

Publication number: JPH0466037U
Application number: JP10834290U
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図はロツク解除状態のテストボタン
の取付状態を示す要部断面図、第４図は従来のも
のを示す外観斜視図、第５図は第４図の線−
の要部断面図、第６図は第５図を内部構造を示す
要部斜視図、第７図は第６図の釈放形電磁装置を
示す斜視図、第８図は第７図を反対側からみた斜
視図、第９図は第７図の正面図、第１０図は第９
図の上面図、第１１図は第１０図の線−
の断面図、第１２図はスライダーを外した状態を
示す正面図、第１３図は第１２図の上面図、第１
４図はスライダーの上面図、第１５図は第１４図
を上からみた図、第１６図は第１５図の線−
の断面図、第１７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１８図は第
１７図の上面図、第１９図はボタンホルダの斜視
図、第２０図は第９図から釈放位置に動作した状
態を示す正面図、第２１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、１０はテストボタン、１
０ｂはテストボタンの頭部、１１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、４１は浅い溝、４２は深い溝を示す。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. 4 is a cross-sectional view of main parts showing the state of installation of the test button, FIG. 4 is an external perspective view of the conventional button, and FIG.
6 is a perspective view of the main part showing the internal structure of FIG. 5, FIG. 7 is a perspective view of the release type electromagnetic device of FIG. Figure 9 is a front view of Figure 7, Figure 10 is a perspective view of Figure 9.
The top view of the figure, Figure 11 is the line of Figure 10 -
12 is a front view showing the state with the slider removed, FIG. 13 is a top view of FIG.
Figure 4 is a top view of the slider, Figure 15 is a view of Figure 14 seen from above, and Figure 16 is the line shown in Figure 15.
, FIG. 17 is a front view showing the state in which the slider and button holder are removed, FIG. 18 is a top view of FIG. 17, FIG. 19 is a perspective view of the button holder, and FIG. 20 is a view of FIG. 9. FIG. 21 is a front view showing a state in which the earth leakage breaker is operated from the open position to the release position, and FIG. 21 is a diagram schematically showing the circuit of the earth leakage breaker and its test circuit. In the figure, 1 is a circuit breaker case, 1A is a display section, 3 is a release type electromagnetic device, 10 is a test button, 1
0b is the head of the test button, 11 is the test button hole, 33 is the main circuit, 34 is the opening/closing contact, 35 is the zero-phase current transformer, 38 is the tripping coil, 40 is the locking convex part, 41 is the shallow groove, 42 indicates a deep groove. In addition,
The same reference numerals in each figure indicate the same or corresponding parts.

Claims

[Claim for Utility Model Registration] A zero-phase current transformer that detects leakage current in the main circuit, and a tripping coil that is energized to open the switching contacts of the main circuit when an output is generated in the zero-phase current transformer. and a test button whose head protrudes from a test button hole in the display part of the circuit breaker case and is operated by pushing the test button, wherein a locking convex portion is provided on the outer circumferential surface of the head of the test button, and providing a shallow groove in the pushing direction in which the convex part engages and a deep groove in the pushing direction to release the convex part on the edge of the test button hole, and the test in which the convex part engages in the shallow groove. The test button is locked in a rotational position of the button, and the test button can be pressed in a rotational position where the protrusion fits into the deep groove. vessel.