JPS58169741A - Composite circuit 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 power distribution board, a power distribution board, etc. ((a composite type circuit breaker that combines an installed circuit breaker and an electromagnetic switch 2g).

The switchboard industry is located at the end of the distribution V-stem9 and is susceptible to upstream competition for orders.

Therefore, in order to overcome the competitiveness among switchboard manufacturers, quality and price are the most important weapons. In order to meet the above requirements, this invention provides a compact and inexpensive composite circuit breaker that combines the functions of an electromagnetic switch and a 1fT switch by eliminating the redundant functions of the circuit breaker and the 1fT switch. The purpose is to

The present invention will be explained below with reference to embodiments shown in the drawings.

FIG. 1 is a side sectional view showing a closed pole mark of an embodiment of a composite circuit breaker according to the present invention. In Fig. 1, the mode case (υ is the one that constitutes the frame of the composite circuit breaker. There is.

The fixed contact (the stage is attached to the tip of the fixed contact conductive plate (no) which is bent into a U-shape. The movable contact (4) faces the fixed contact (3) It is housed at one end of the plate (5).

The crossbar (8) is connected to the inner wall (lb.
) and the back (single shaft) of lever I, which will be described later. The first compression spring (7) is a mosito case ω
and the lower end of the crossbar (6).

411t that pushes the crossbar (6) upwards
ll (81 is a part that rotatably supports the middle part of the movable contact conductive plate +51 on the lower end part of the cross bar (61).
Manual 71nd μ (9) is mounted on a fixed frame (not shown) with a shaft (10
1, and protrudes to the outside through a square hole (ld) Am of the operation part (9a)A (Mosito case α). The roller 03i is rotatably attached to the inner tip of the manual hand μ (9) by a link (pin 02 at one end), and the roller 03i is rotatably attached to the other end of the link (11). , the slope 11 (6a) provided on the upper end surface of the cross bar (6) and the back surface (1
4m).

One end of Shiba-I is rotatably supported by a shaft (lb) on a fixed frame (not shown).A trip lever (
! The middle part of υ is rotatably supported on a fixed frame (not shown) by an axis Oη, one end of which is engaged with the other free end of the lever 04, and a through hole ( 16a
) are drilled. The yoke is formed into a U-shape, and a cylindrical electromagnetic tripping coil IV wire is installed inside the U-shape. The movable iron core is the hollow part of the electromagnetic tripping coil yvH and the yoke Q.
A through hole (
181), and is sucked downward when the electromagnetic tripping carp μα mouse is energized. One end of the protruding shaft @υ is attached to the lower end surface of the movable iron core (A), and the other end is slid into the through hole (182) drilled on the other U-shaped side (18b) of the yoke O~. It is movably inserted. The trip bottle handle is located in the through hole (16) of the trip lever Qg.
a), one end of which is slidably inserted through the movable core.
A retaining piece (C) is attached to the other end. The 9th conductor (goods) is connected to the movable contact conductive plate (5) and the electromagnetic trip coil tv (t91 i!j).The second compression spring is the movable contact conductive plate (6) It is attached to the other end (5 m) and the bent part (18c) ldl of the U-shaped other side (18b) of the yoke (181). The 16X yoke (goods) attached, the cylindrical charging electromagnetic coil (c) installed inside the yoke, and one end (
29%) is the hollow part of the charging electromagnetic coil A/(company) and the yoke.
a longitudinally long elongated hole (29b) into which a shaft attached to the crossbar (6) is slidably inserted in the middle part; The other end (29c) consists of a trip lever (a movable core installed opposite to one end of 1υ) and a release spring (fill) that constantly presses the movable core in the direction of releasing it.

The microswitch is closed when the operating button (32g) is engaged with the other end of the trip lever. The control signal input terminals (33g+) and (33b) are connected to the charging electromagnetic coil IL/@8 via a microswitch.

Next, this operation will be explained using FIGS. 2 to 5. Now, when the composite breaker shown in Fig. 1 is in and out, that is, when voltage is applied to the charging electromagnetic coil (c) and the movable core is attracted to the electromagnet device, the length of the movable core is The upper end surface of the hole (29b) engages with the pin to hold the composite breaker in the closed position. Therefore, the movable contact (4)
is in contact with the fixed contact (3), and the circuit 'ze flow is the fixed contact conductive plate (乃→fixed contact (:1→possible N +i contactor (4)
→ Flexible conductor (goods) → Flows into the electromagnetic tripping coil Ql. In this state, control value/signal input terminal (33m)
, (33b) for eliminating the applied voltage and turning on '+tj 4;
When the a-coil A/(c) is applied + and the voltage 7 is made non-voltage, the movable iron core - is released by the spring force of the release spring 18Il. As a result, the long hole (29b) of the movable core moves upward with the shaft 1 as a guide, and the other end of the movable core (ZSC
) presses one end of the trip lever upward. Therefore, the trip lever rotates clockwise around the shaft (1?1), and the -DMHa of the trip lever 0 and the lever t.
Release the engagement with the other end of J4J. When this engagement is released, the lever I will rotate clockwise around the shaft (I) due to the force of the roller 091, so the roller (Ia will rotate clockwise around the crossbar (I).
0) and falls between the sides of the lever I and the crossbar (6) as shown in Fig. Due to the spring force of 7), the movable contact (4) moves in one direction to the position indicated by the dashed-dotted line in Figure 3, and as shown in Figure 3, the movable contact (4) opens and separates from the fixed contact (2). In the state shown in Fig. 3, 1 manual hand /L/+91 is rotated clockwise around the shaft 1101 by the spring force of a torsion spring (not shown), so it is in the state shown in Fig. 3. It automatically rotates from 1 to the incision 1d shown in FIG. 4 and stops.

In other words, the composite circuit breaker kg becomes a cutting block. In the state shown in Fig. 4, move the manual hand A/191 to tli 11.
If you turn further clockwise around 01, the lobe (+
31 becomes a black state. When the manual hand A/191 is rotated counterclockwise about the shaft 1101 from the reset state shown in FIG. 5, the roller 03 presses the inclined surface (6a) of the cross spar (6).

Move in the incoming direction. Further, if you continue to rotate the manual hand μ (9) counterclockwise until it reaches the input position shown in Figure 1,
The contact 5171 (4) contacts the fixed contact e) and enters the ON state.

Next, when a fault current flows into the composite circuit breaker in the on state shown in Figure 1, the electromagnetic tripping coil μθ detects this and rotates the lip lever clockwise around the axis Qη. Then, trip lever (1) and lever I will become uncoupled. If this disassociation occurs, lever Q4 will be disconnected.
is rotated clockwise around axis 06) by the force of roller α. As a result, the loaf tta is cross par (6
) rotates on the inclined surface (6a) of the lever I and falls between the side surfaces of the cross spar (8), so that the cross spar (6) is moved in the opening direction by the spring force of the first compression spring (7). As a result, the movable contact (4) separates from the fixed contact (3). In this case, by rotating the trip lever 06), the operation button (32) of the micro switch C (g) is activated.
1) and the trip lever (Iφ other end) are no longer held together,
Since the microswitch wire is in an open state, the voltage of the closing electromagnetic coil lv becomes non-voltage. Therefore, since the movable core moves upward due to the spring force of the release spring υ, the engagement between the shaft and the movable core is broken, and the crossbar (
6) is moved upward by the spring force of the first compression spring (6).

Next, the operating states of the component parts will be explained.

As a constraint in this operating state, the following is said to be in place from the viewpoint of safety.

In other words, when manual hand A' +91 is in the cutting position,
Even if the operation button (not shown) that controls the electromagnet device is operated by a person and a voltage is applied between the control signal input terminals (33g) and (33b), the movable contact (4) does not connect to the fixed contact (3). Therefore, for safety reasons, the mutual relationship of each component must be as shown in Table 1.

Next, Table 1 will be explained 0 manual hand/L/ 191
When is in the human cry @, the trip lever (161) is pushing the operation button (sga) of the micro switch (to), so the electromagnet device - is controlled between the control signal input terminal (33s+) and (33b). When a voltage is applied by turning on the operation button (not shown), the micro switch θ is in the on state, so an exciting current is supplied to the charging electromagnetic coil Iv (c), and the movable contact (4) is a fixed contact (3)
come into contact with. When the above-mentioned operation button (not shown) is turned off, the pressure between the control signal input terminals (33g) and (33b) becomes zero, so the movable iron core is released by the release spring @phantom, and the movable iron core is released to the tri-two (lfli). A space is formed between the clockwise operation button (32a) and the switch 1-Qυ with the axis Oη as the center, and the microswitch (34) becomes a cut-out shape.

Next, when the hand W hand A/191 is in the off position, even if you operate the operation button (not shown) to the on position, the micro switch 0 is in the off position, so the No excitation current is supplied to the magnetic coil /I/(c), so the movable iron core is not attracted, so the movable contact (4) does not come into contact with the fixed contact e).

As explained above, a remote control function using an electromagnetic switch is added to the circuit breaker, and the circuit breaker is housed in the mode μ mode case (1) in the Combat Y. Therefore, since the switching function and the overcurrent detection function, which are the redundant functions of the conventional magnetic switch and circuit breaker, can be combined into one function, the electromagnetic BG switch circuit and shield plate can be combined into one function. T-sets can be made.

For safety reasons, when the manual hand ~19] is in the cut position lIi, the composite circuit breaker will not be turned on even if the operation button (not shown) controlling the electromagnetic device @7 is turned on. It is configured.

As described above, according to the present invention, it is possible to construct a product whose outer shape is easily exposed to the sun and is safe.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a side sectional view showing a closed state of an embodiment of a composite circuit breaker according to the present invention, and Figs. 2 to 5 are explanatory diagrams of the operation of the present invention. It is. In the figures, the same parts in each figure are denoted by the same symbols.
3) is a fixed contact, 14) is a movable contact, (B) is a movable contact conductive plate, (6) is a cross spar, (6a) U inclined surface (71 is the first compression spring, (8) is the shaft , (9) is a manual hand μ, (91 company operation part % shout is a shaft, (Ill is a link, 021 is a bottle, 03 is a roller, (141 is a lever,
(In is the shaft, - is the trip lever, 0?l is the shaft, αa is the yoke, (lS is the electromagnetic tripping coil A/%- is the movable iron core,
＠υ is the protruding shaft, and the % hard is the trip pin. - is the retaining piece, the border is the removable conductor, 4 is the second compression spring, the handle is the magnet device, @ is the yoke, (C) is the electromagnetic coil for closing,
4 is the movable iron core & (29si) is one end, (29b) is the long hole, (29c) is the other end, - is the shaft, @l) is the release spring, ida is the micro switch, (32m) is the operation button . (33a) and (33b) are control signal input terminals. Agent Patent Attorney Shin Kuzuno - 1i1 ■ Figure 2

Claims (1)

[Claims] (1) A fixed contact installed in a frame and fixed to one end of the fixed contact conductive plate, a movable contact having a movable contact opposite to the fixed contact fixed to one end] I2 contactor conductive plate, the movable A cross spar with one end rotatably supported in the middle part of the contactor conductive plate and an inclination i11 formed at the other end, and the center part rotates by a shaft h! A manual handle that is rotatably supported and has an operating part protruding outside the frame body to open and close the movable contact conductive plate, one end of which is rotatably supported by the internal tip of the manual hand μ and the other end of which is rotatably supported. A link that engages with the inclined surface, a lever that releases the engagement between the other end of the link and the inclined surface when an overcurrent exceeding a predetermined value flows, and a direction that causes the crossbar to separate from the movable contact conductive plate. a compression spring that biases the lever, a switch that opens when the lever is operated, a closing electromagnetic coil to which an excitation current is supplied via the switch, and a movable mechanism that operates the lever when the closing electromagnetic coil μ is deenergized. A composite circuit breaker characterized by having an iron core.