JPS58186180A - Plug with leakage breaker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention relates to a plaque with an earth leakage breaker, and its purpose is to achieve miniaturization by arranging the internal mechanism in a compact manner, and also to integrate the rough part into one piece. The next objective is to provide a plug with an earth leakage breaker whose corded plug portion can be led out from the container and which can be easily deployed to other objects with a common structure.

The present invention will be explained below with reference to drawings of embodiments. il in Figure 1
+ is a container made of a synthetic resin molded product that is compatible with electrically insulating materials.
This container +11#'i base (2), the upper part of the base (2) 1ifJ and the cover (3) that is broken into the vinegar, and the lower front of the base (2) below this cover (3). It consists of a terminal cover (4) that is attached to the opening, and an operation button holding cover (9) that is attached to the lower opening of the cover (3).
KKFi earth leakage breaker block A1, which will be described later, houses a control block B for controlling the earth leakage breaker block A and the main circuit, and a power cord (6) for the next load to which the load is connected from the lower primary 014 section; A radius (7) is installed at the tip of the cord (6), and the next corded plastic part (8) is derived.

In addition, the operation button holding cover +91#'i operation button (lO)
and a test button (with a cover (3) attached). Figure 2 shows an exploded perspective view of one embodiment. It is a waterproof patch that is interposed between the terminal cover (4) and the base (2) and seals between each cover [31+41 and the base.
A pair of terminal boards to which the load power cord (6) is connected, located in the recess (14
Attached with iK fixing stud Qf9. 06) is terminal plate aIK
It is a threaded terminal screw. 071 is a zero-phase current transformer, and the zero-phase current transformer Oη is for detecting an unbalanced current flowing in the main circuit in the event of a current leakage, and is used to detect the output in the end of the recess located above the recess H. A control amplifier circuit SH υ consisting of an IC that amplifies and creates a trigger signal for the thyristor, and a trip B equipped with the earth leakage breaker block AK are connected to the main circuit through the circuit, and normally the control amplifier circuit UK power supply is It is connected between the diode bridge (C) to supply, the negative terminal of the diode bridge □□□ and one end of the tripping coil on the side of the diode bridge (C), and is equipped with the following circuit consisting of the above-mentioned thyristor m etc. Therefore, a pre-seat plate was attached to one side of the block body, and a companion test contact spring holder was attached to the side to artificially create an electric leakage. This detection circuit block 4#-i is fitted into the upper left recess 1271K of the base (2) so as to be located above the zero-phase flow device Oη. Thus, a control circuit block B is constituted by the detection circuit block OI and the zero-phase current transformer (17)K. (
C) is a pair of terminal fittings to which the conductor of the cord (6) of the plug part (8) is welded to one end, and these terminal fittings (C) are attached to the recess @ of the base (2) which is in contact with the recess θ4jKm. It is fitted in parallel across the partition (30), and a fixed contact (31) is provided at the other end.
Make sure that the other end is located above the recess and the control block B
A recess C located on the right side of the center line of the base (2) with respect to K
(It is arranged at the lower end of 3. (C) is the fixed contact (31
A pair of movable contact spring plates (to) have a movable contact (b) corresponding to the base end attached to the base (2). Concave mounting surface (to)
Fixed with K/Tack 3n. An 11 source (to) that is inserted into the through hole (17 m) of the zero-phase current transformer Gη and forms the main circuit is connected to the connection between this mounting terminal plate (to) and the terminal plate 0 barrel described above. . Reference numeral 69 denotes an insulating substrate, on the surface of which an earth leakage blocking member is fixed, and the concave portion C33 is fixed to the right side of the upper part of the base so as to cover the mounting concave surface (to). It is something that is fixed.Fourth
The figure shows an exploded perspective view of the earth leakage breaker block A.
In the figure, the tripping electromagnet device (41) is a tripping electromagnet device that has four tripping coils, and when the tripping coil (2) is excited, drives the driver (43).
In the figure, it is fixed with a mounting screw 143 inserted from the bottom side of one side of the upper surface of the insulating substrate (Ki8 edge substrate).

(Foundation) is a mounting frame for installing a tripping mechanism pipe.
This mounting frame υ0 is placed between the ribs (39m) on both sides of the center of the upper surface of the insulating board (to), and
It is fixed with a fixing screw 0j inserted from the bottom surface of. (c)
is a U-shaped operation lithic with both sides bridged by the center piece,
This operation lever (49 is a shaft body (4η) inserted into a shaft hole bored at the upper end of the mounting frame (goods), one end of which is pivoted. t48 is a shaft body (4η) inserted into One end (48 m) is hung on the hole 11 at the upper end of the mounting frame (4I#'i). The upper shaft part (49m) is inserted into the long glossy guide hole jυ and the shaft hole surface provided at the other end of the operation button (49), which protrudes from both sides of the rear end of the operation button. The lower shaft portion (49b) is inserted into the bearing hole FAIr of the bar link disposed in the mounting frame 1441, and pivotally supports the bar link for free rotation. Friend's lower shaft part (49b) #
: is movably arranged in a long notched hole provided in the center of the mounting frame 04.

M#-iT type trip plate, the shaft body 16 is inserted into the shaft hole (56 m) penetrating both sides of the center part of the trip plate.
The mounting frame (441K) is rotatably supported at 71, and the horizontal bar (56b) at the upper end is connected to the tripping type "magnet device!-
〇 driver 1421 K *q yt. The engaging recess (56c) K#-i at the lower end of the lever is arranged so that it can be engaged and detached freely, and the tripping plate and the tripping lever 4 are secured via the lever branch. It is set to K so that you can leave if the situation arises. There is a card 7''C in the shape of an insulating material, and this card 1681 has both side pieces (58JL) protruding downward through the insulating base &C (!I have holes B9 on both sides). The center piece (58b) is vertically movably inserted into a guide groove 1 formed in the lower end of the mounting frame (44I) upward and downward in FIG.

Further, the upper end of the center piece (58b) is brought into contact with the other end of the thiKFi lever so that the car is pushed upward or downward by the rotation of the lever. - is 8 rods, and the other end of the 8 rods is located above the other end of the lever, and the other end of the lever is rotated upward. The bolt is inserted through the hole υ.The bolt is a spring body bent into a substantially U-shape. The twisted portions N on both sides are inserted into the shaft IT) & C. The center piece of the lower part of the skin is locked to the lower end of the tripping plate, and the tripping plate group is biased by the spring in the direction of the arrow XK in the figure.

Therefore, the earth leakage breaker block A, which is integrally attached to the insulating substrate (9), is arranged inside the container +11 by fixing the insulating substrate (to) to the base (21K). Electric wires □□□, which are arranged on the right side with respect to the center line of the base (2) with respect to the control block BK on the left side, and which constitute the main circuit when the plug device with earth leakage interrupting function is installed, and the terminal plate a1 with equal voltage At the same time, the ends of both side pieces (58a,) of the card state are brought into contact with the movable contact spring plate ν9 located in the recess 3aK of the base (2).(3 ) is open on the back and downwards, and an engagement guide groove is provided on the inner wall surface slightly inside (above) the bottom opening (3a), and this engagement guide mmK Both edges (9) of the operation button holding cover (9)
a) to operate the bottom opening by slidingly engaging the button holding cover (9).
), and the operation button holding cover (91) is assembled into the cover (3). This locking groove has an operation button holding cover (9).
) are engaged. The terminal cover (4) has a load power cord (5) and a cord (6) at the bottom end.
) are arranged side by side, and the upper end is open, and a tomoho joint (not shown) is attached to the inner edge of the opening, and the lower surface of the cover (3) is inserted. The inside is designed so that it can be assembled into the cover (3) by slidingly engaging it from the front side of the cover. The cover (3), the terminal cover (4) and the operation button holding cover (9) are integrally formed as a part of the cover, and are inserted into the opening of the base (2) via a waterproof pad. Fixed in horizontal position. a mounting screw that passes through the back side of the 1891Vi base (2) and fastens the cover (4);
IIFih bar (3) This is a mounting screw that penetrates from the back of the K base and tightens.By the way, the operation button holding cover (9
) A small window hole (70 m) that allows the K operation button to be exposed to the outside from inside the cover (3), and a second window hole (70 m) that exposes the test button (11) to the outside from inside the cover (3). 7ob
) are perforated, and when the above-mentioned application is applied, the button +101 is pressed respectively.
expose the river. At this time, the test button (11) is held between the test contact spring and the operation button holding cover (9). ff1) This is a skinny reply that supports the Fi test button (ll). Note that the operation holding cover (9) is the cover (3)
The lower opening of the cover (3) is located slightly inward from Kl, and the lower circumferential wall of the cover (3) forms an eaves part (2) to prevent raindrops from getting on the button (■). C) is an indicator hole into which a neosty tube NLK for displaying power is distributed on the printed board of control block B. Figures 5 (Ik) to (c) are a cross-sectional view of this embodiment, a front view of the base (2) with part of the cover not attached, and a front view of the base (2) with the insulating substrate (toward) not attached. t in the same figure (e).
.

This is the lead wire of the secondary winding N of the zero-phase current transformer 07), and 4
is the other lead wire.

This embodiment thus constructed can be installed by screwing onto the mounting bracket 9 shown in FIG. 6 and attaching the mounting bracket 9 to a predetermined mounting surface.

Next, the operation of this embodiment will be explained based on the circuit of FIG. 3 and FIG. 7. Assuming that the earth leakage breaker block A is in the state shown by the broken line in Figure 7, the lever lock is pushed down by one end against the spring force of the movable contact spring plate (to) to fix the movable contact (b). When contact @1)K is brought into contact with the trap, the other end is locked in the engagement recess (56c) at the lower end of the tripping plate.
Operate against the spring force of the coil spring (c)
and the position of the tripping lever (support) as shown in the figure. In this state, plug part (8) plug I) f7
Plug in the + (not shown) and connect the negative power cord (not shown) to the load (not shown) to connect the load to the #-
! The current is passed through the main circuit. At the same time, a current flows through the resistor Rafr to the Neosilicon tube NLK, which lights up to indicate that it is energized. In addition, the detection circuit block (lIiIK power is supplied through the tripping coil and the resistor island diodes bridge KFi that drives C3 is not reached.

Next, when an earth leakage occurs, an unbalanced current flows in the main circuit, and a secondary output is generated in the zero-phase current transformer Oη. Output as a trigger signal. When triggered, the thyristor turns on and connects the tripping coil 4 and the main circuit. An excitation current flows through the tripping coil (5), and the driver (6), which has been inserted into the through hole of the tripping coil (2) in a plastic manner, is moved against the biasing spring into the seventh Drive to the right as shown by @ in the figure. As a result, the tip of the drive body collides with the horizontal bar (56b) between the tripping plates, and the tripping plate resists the urging force of the spring body in the full clockwise rotation direction in FIG. The engagement recess (
56e) The engagement with the other end of the bar is lost. When this attachment is released, one end of the bar is pushed upward through the card slot by the spring force of the movable contact spring plate (c). At the same time, the locking state of the tripping lever 141 is released, as shown in FIG. , push the operation button to the right, that is, outward from the window hole (70m), and press the operation button (
The lower shaft portion (49b) of the next side removal lever (C) is pivoted to the lower end of (C) and moved upward through the one-notch long hole ring. With this movement of the lower shaft portion (49b), the lever lock is lifted upward, and the upper end of the lever abuts against the core rod, resulting in the state shown by the chain line in FIG.

Therefore, the movable contact (B) of the movable contact spring plate (C) is opened from the fixed contact -1), and the main circuit is cut off, thereby stopping power supply to the load. At the same time, in the companion electromagnet device Cυ which also stops energizing the coil for tripping U, when the driving body 0z returns from the position shown by the chain line to the original position shown by the solid line due to the biasing force of the built-in spring, K occurs. At the same time as the return of the spring body
〇 Due to the biasing force, the distance between the tripping plates returns from the chain line position to the broken line position. As mentioned above, the operation button has a movable contact spring plate (
The window hole (7) is driven in a direction perpendicular to the opening direction of the window hole (7).
0m) and protrudes outward, indicating that an earth leakage cutoff has occurred.

Next, the case where this device is turned on will be explained.

First, push the dangerous operation button protruding from the window hole (70m) to the left in Figure 7.
The lower shaft part (49
b) moves downward within the hole ring and pushes down the lever lock. This pushing down K causes the lever t5a#'
i one end through the card - movable contact spring plate (c)
While pressing down in the direction perpendicular to the pressing direction of the operation button, the other end of the button 1 is inserted into the engagement recess (56e) of the tripping plate.
)K when locked, becomes , and when held in the state shown by the broken line in FIG. 7, becomes .

Furthermore, when the test button Ql is turned on in the state shown by the broken line in Fig. 7, the main circuit 2II is connected to the test circuit 1 through the resistor, and an unbalanced current can be passed through the main circuit in a pseudo manner, as described above. It is possible to cause the current leakage cutoff block A to perform a cutoff operation. 3) is a surge absorber.

Figure IP+8 shows a perspective view of an embodiment in which the plug blade of the plastic part (8) Nozurafu ()) is protruded from the upper back surface of the base (2). For example, as shown in Fig. 9, the plug blade of the plug (7) is formed integrally with the mounting terminal plate (c) K, and the plug blade of the plug (7) is attached to the base (2).
The difference is in the protruding part from the back. A recessed hole for leading out the cord (6) of the plug part (8) in the embodiment shown in FIG. It is pressurized to prevent dust etc. from entering, and the parts of the base (2) are made common.Of course, in this case, when using the base (2) in this embodiment,
) (The plug blade protrusion hole 71 may be provided through the base (2) K.

Fig. io shows an exploded perspective view of the fixing of this embodiment. This embodiment is fixed by engaging and fitting the lower part of the container (1) into the letter-shaped fixing frame 771. The fixed frame aη has a locking protrusion decoy on both sides of the inner wall, and a locking protrusion C on both sides.
: Two locking projections 9) are provided parallel to the width direction of the side piece with respect to IIK and located at the opening and opening of the two locking projections. to the base (
The present embodiment is fixed by engaging the opening periphery of 2), the step portion formed by the waterproof rosette 04, and the opening periphery of a part of the cover.

The present invention stores a main circuit in a container molded from an electrically insulating material and has a load power cord and an operation button attached to the lower part thereof, and the direction of the suppression operation of the operation button is set relative to the direction of movement for opening and closing one main circuit. There is no right angle t, and when the operating block is suppressed by the operation button, an earth leakage breaker that engages the tripping plate and the tripping plate is installed in the upper part of the main circuit, and this earth leakage breaker block and the center line are installed. Since the control block pipes are arranged in parallel to control the interruption due to one earth leakage, the earth leakage cutoff block and the control block can be arranged without waste, and at the same time, there is no earth leakage in the main circuit. Since the shutoff block is located at the top, it is easy to pull out the plug part that connects to the main circuit with a cord, and to pull out the plug blade directly into the container.As a result, even if the shape of the plug part is different, This has the effect of making parts common, and furthermore, in the earth leakage breaker block, the operation direction of the operation button and the opening/closing direction of the main circuit are at right angles, so it is possible to downsize the mechanism block that includes the operation button. , the device can be further downsized.

[Brief explanation of drawings]

Figures 1-), (b) and (e) are partially omitted side views, front views, and bottom views of one embodiment of the present invention, Figure 2 is an exploded perspective view of the same as above, and Figure 3 is the same as above. 4 is an exploded perspective view of the same electric leakage breaker as above, and FIG. 5(a) to
(e) N is a vertical cross-sectional view of the same as above, a front view of a state where a part of the cover is not attached, a front view of a state where a part of the cover and an insulating board are not attached, and Fig. 6 is a perspective view for explaining the installation of the same as above. , 7th
The figure is an explanatory diagram of the operation of the leakage cutting block same as above, Fig. 8 is another embodiment of the present invention, fP+ view 1 Fig. 9 is an exploded perspective view of the same, and Fig. 10 is an explanation of the installation of the same as above. FIG. 2 is a perspective view of the circuit, in which A is an earth leakage cutoff block, B is a control block, (1
) is the container, [51Vi load power cord, (8) is the plug 5
-Fi operation button, (C) is an operation lever, - is a tripping lever, and - is a tripping plate. Agent Patent Attorney Ishi 1) Chief 7 (a) ■ Representative) Figure 1 (b) Figure 5 (a) (b) No. 51'7I (c)

Claims (1)

[Claims] +l) It is molded of electrically insulating material, a load power cord and an operation button are attached to the lower part, and then the main circuit is stored in the container, and the direction of the suppression operation of the operation button is set relative to the direction of movement for opening and closing the first main circuit. An earth leakage breaker block is provided at the top of the main circuit, forming a right angle, and the operation plate is suppressed by the operation button to engage the edge tripping plate and the tripping plate, and this earth leakage breaker block and the center A plug with an earth leakage breaker, characterized in that a control block for controlling an earth leakage breaker block is disposed in parallel with the earth leakage breaker, and a next plug part is connected to the main circuit.