CN2364550Y

CN2364550Y - Two-wire current breaker with 18 mm width

Info

Publication number: CN2364550Y
Application number: CN 99206121
Authority: CN
Inventors: 周圣博
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-03-22
Filing date: 1999-03-22
Publication date: 2000-02-16
Anticipated expiration: 2009-03-22

Abstract

The utility model relates to a two-wire current breaker with the width of 18 mm. On the basis of a publicly known two-wire current breaker with the width of 18 mm and the functions of short circuit and overload protection, one side of a casing is stretched along a lengthwise direction to form space for installing an electric leakage tripping driver. The driver is composed of a zero sequence mutual inductor, an electron plate and an electromagnetic attracting device, wherein, signal input wires of the zero sequence mutual inductor are two wires connecting movable contacts and binding posts; a signal output wire is connected with the electron plate; signal current output by the electron plate conducts an electromagnetic coil of the electromagnetic attracting device; a pull rod fixed on a core rod of the electromagnetic attracting device contacts a tripping arm arranged in the tripping driver. An earth leakage protection function is added on a current breaker with the characteristics.

Description

Width is 18 millimeters a two-wire circuit breaker

It is 18 millimeters two-wire circuit breaker that the utility model relates to a kind of width.

Width is that 18 millimeters two-wire circuit breaker has the housing that is assembled by three housing parts in left, center, right; housing is provided with handle, release, short circuit dropout driver, overlond trip driver, moving contact, fixed contact, binding post and extinguisher; obviously; this circuit breaker has short circuit and overload protection function; but be provided with creepage protection function, its defencive function is incomplete.

It is 18 millimeters two-wire circuit breaker that the purpose of this utility model provides a kind of width that has electric leakage, short circuit and overload protection function concurrently.

Solution of the present utility model is that the one-sided along its length extension of a side that the overlond trip driver is installed in the housing forms for the space that electric leakage dropout driver is installed, this electric leakage dropout driver is by zero-sequence transformer, electron plate and electromagnetic attracting device are formed, wherein the signal input line of zero-sequence transformer is to connect the two piece leads of moving contact with binding post, the output line of zero-sequence transformer inserts electron plate, handle the solenoid of the signal code conducting electromagnetic attracting device of output through electron plate, the pull bar that is fixed on the plug of electromagnetic attracting device then contacts with the trip arm in the release.

Essence of the present utility model is under the prerequisite that keeps 18 millimeters of width; in housing, form one for the space that electric leakage dropout driver is installed; this electric leakage dropout driver provides electric leakage signal by zero-sequence transformer; making electromagnetic attracting device get electric driving plug after electron plate is handled moves and spurs the trip arm release is threaded off; at this moment; moving contact promptly disengages with fixed contact; therefore, the utility model is to have increased creepage protection function again on 18 millimeters the basis of two-wire circuit breaker at the width with short circuit and overload protection function.

Illustrate particular content of the present utility model below in conjunction with drawings and Examples.

Fig. 1: structure chart of the present utility model;

The vertical view of Fig. 2: Fig. 1;

Fig. 3: electric leakage prompting structure chart partly;

Fig. 4: earth leakage protective circuit theory diagrams.

As shown in the figure, width is that 18 millimeters two-wire circuit breaker has housing 1 and is arranged on handle 2 in the housing 1, release, short circuit dropout driver, overlond trip driver 5, moving contact 6,7, fixed contact 8,9, binding post 10,11,12,13 and extinguisher 14,15, the one-sided along its length extension of a side that overlond trip driver 5 is installed in the housing 1 of the present utility model forms for the space 16 that electric leakage dropout driver is installed, this electric leakage dropout driver is by zero-sequence transformer 17, electron plate 18 and electromagnetic attracting device are formed, wherein the signal input line of zero-sequence transformer 17 is to connect moving contact 6,7 with binding post 12, two leads 19 of 13,20, the output line of zero-sequence transformer 17 inserts electron plate 18, handle the solenoid 21 of the signal code conducting electromagnetic attracting device of output through electron plate 18, be fixed on 23 on pull bar on the plug 22 of electromagnetic attracting device with 24 contacts of the trip arm in the release.Described release, short circuit dropout driver and overlond trip driver 5 are known technology, and wherein release is by swing arm 25, tripping arm 26, the trip arm 24, contact arm 27,28, some springs be connected handle 2 and form with the members such as connecting rod 29 of swing arm 25; Short circuit dropout driver is made up of solenoid 3, plug 4 and spring, and overlond trip driver 5 is exactly the thrermostatic bimetal-plate of single-ended supporting.According to routine, also be provided with the leak(age) test circuit of forming by resistance R and test button 30 in the housing 1, wherein test button 30 stretches out in housing 1.For the tripping operation of pointing out circuit breaker causes under the electric leakage situation, can the pivoted arm 32 that be supported on fulcrum 31 be set in the inboard of overlond trip driver 5, the one end is with plug 22 contacts, the other end indicates the prompting look, and be provided with the match hasp 34 of the corner that limits pivoted arm 32 of the hasp on the handle 2 33, pivoted arm back-moving spring 35 is sleeved on the fulcrum 31, and the prompting look then is shown in the display window 36 on the housing 1.Present embodiment is designed to fulcrum 31 with the concentric cantilever minor axis structure of the bolster 37 of the trip arm 24, can make structure compact more like this.Housing 1 is a combining structure, and is assembled by three of left, center, right.For width is that 18 millimeters two-wire circuit breaker all adopts the card rail to install, and the utility model and is arranged on buckle 38 lower right of housing 1 too.

Claims

1, a kind of width is 18 millimeters a two-wire circuit breaker, have housing and be arranged on the interior handle of housing, release, short circuit dropout driver, the overlond trip driver, moving contact, fixed contact, binding post and extinguisher, it is characterized in that: the one-sided along its length extension of a side that overlond trip driver (5) is installed in the housing (1) forms for the space (16) that electric leakage dropout driver is installed, this electric leakage dropout driver is by zero-sequence transformer (17), electron plate (18) and electromagnetic attracting device are formed, wherein the signal input line of zero-sequence transformer (17) is to connect moving contact (6,7) same binding post (12,13) two leads (19,20), the output line of zero-sequence transformer (17) inserts electron plate (18), handle the solenoid (21) of the signal code conducting electromagnetic attracting device of output through electron plate (18), the pull bar (23) that is fixed on the plug (22) of electromagnetic attracting device then contacts with the trip arm in the release (24).

2, width according to claim 1 is 18 millimeters a two-wire circuit breaker, it is characterized in that: the inboard of overlond trip driver (5) is provided with the pivoted arm (32) that is supported on fulcrum (31), the same plug of one end (22) contact, the other end indicates the prompting look, and be provided with the match hasp (34) of the corner that limits pivoted arm (32) of hasp (33) on the same handle (2), pivoted arm back-moving spring (35) is sleeved on the fulcrum (31), and the prompting look then is shown in the display window (36) on the housing (1).