JP3146749B2 - Circuit breaker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit breaker, and more particularly to a circuit breaker in which the connection of a power line and the connection of a ground line can be opened and closed with different handles.

2. Description of the Related Art Conventionally, there is a distribution board shown in FIG. 48 which houses this type of circuit breaker. That is, a main breaker 234 is provided at the upper center of the distribution board 225, and the main bars 235, 236 connected to the load side of the main breaker 234 are suspended, and a plurality of branch breakers are provided.
237 are arranged on both sides of the main bars 235 and 236,
5 and 236, power supply side, branch breaker via branch bar 238
237 connected to the input terminal 8 of the power supply side line 6. Also,
A neutral switch 239 is provided below the distribution board 225, and is connected to the grounding side wire 7 of the main bars 235, 236.
When power is supplied from this distribution board 225 to the load 240,
Load power supply side line 6 from output terminal 241 of branch breaker 237
240, and the grounding side wire 7 from the neutral switch 239 to the load 240.

In the above-mentioned conventional distribution board, the power supply side line leading to the load is provided at a position away from the output terminal of the branch breaker, and the ground side line is provided at a position away from the branch breaker. Since the wires are derived from the neutral switch, the pair of wires of the power supply side line and the grounding side line leading to the load side need to be changed in length and routed inside the distribution board to be connected, and wiring workability is deteriorated. Was.
Also, when performing an insulation test between a pair of wires on the load side,
It is necessary to open the neutral switch as well as the branch breaker connected to the pair of electric wires, but since the branch breaker and the neutral switch are installed at separate positions, the mutual correspondence is not clear, so the inspection is performed. Had to take time. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a circuit breaker that can perform wiring work easily and can easily perform an insulation test on a load side. is there. A second object of the present invention is to provide a circuit breaker which does not inadvertently open and close a neutral handle in addition to the object of the first embodiment. A third object of the present invention is to provide a circuit breaker in which an erroneous switching operation is reduced in addition to the objects described in the first or second embodiment. The object of the invention described in claim 4 is that the object of the invention is in addition to the object of the invention described in claims 1 to 3 .
An object of the present invention is to provide a circuit breaker that is difficult to be electrically operated . Claim 5
The object of the invention described in the above is that the neutral handle is compactly stored in addition to the object of the invention described in claim 4.
It is to provide a circuit breaker that can be stored . It is an object of the invention described in claim 6 is to provide a easy circuit breaker by operating the neutral handle in addition to the purpose of the invention of claim 5, wherein. An object of the invention described in claim 7 is to provide a circuit breaker which is further less likely to receive an electric shock in addition to the object of the invention described in claim 5 or 6. It is an object of the invention of claim 8, wherein, Newt addition to claims 5 to 7 object of the invention described
It is an object of the present invention to provide a circuit breaker capable of storing a neural contact compactly . The object of the invention described in claim 9 is that the neutral connection is achieved in addition to the object of the invention described in claim 8.
It is an object of the present invention to provide a circuit breaker that can smoothly open and close points . The object of the invention described in claim 10 is that, in addition to the object of the invention described in claim 9, a neutral movable plate is provided.
An object of the present invention is to provide a circuit breaker that is easily opened . Claim 1
The object of the invention described in (1) is to provide a stable contact reliability in addition to the object of the invention described in claim 9 or 10.
It is to provide a circuit breaker that can be secured . Claim 1
It is an object of the invention of a second aspect, Ru near providing <br/> circuit breaker capable of detecting a leakage current in addition to any one of claims 1 to 11 object of the invention described.

According to a first aspect of the present invention, there is provided a circuit breaker having an input terminal connected to a power supply side line of an electric circuit at one end of a housing and connected to the power supply side line of the electric circuit.
Output terminal connected to the ground side of the
It was attached to the other end of the housing, further path of the power supply side wire
In response to abnormalities in the current flowing through the power supply side line, the power supply side contact interposed between the input / output terminals and the operation handle having the operation part projecting from the upper surface of the housing to open and close the power supply side contact in response to the switching operation Shut-off mechanism for forcibly opening the power-side contact
And the neutral contact inserted on the ground side of the
The operation unit is independent from the handle from the top of the housing.
With externally operated neutral handle protruding
A neutral device for opening and closing operation, and a circuit breaker in which a power supply side line and a ground side line are housed in a housing.
Each output terminal up and down in the longitudinal direction of the housing.
And the neutral handle,
Housing for each output terminal of power supply side line and ground side line
In the width direction . According to a second aspect of the present invention, there is provided a circuit breaker in which a handle protrusion inserted into a window hole formed in a middle lid of the distribution board according to the first aspect is provided at both ends of the housing.
Koryaku provided on the upper surface of the central, it is constituted that is protruded to the operating portion of the operating handle from the handle projection. Circuit breaker according to claim 3 wherein the New ones of claims 1 or claim 2
Over Tsentralnyi handle it is arranged to opening-closing at the same side as the operating handle swings in the same direction as the operation handle
There is a configuration. According to a fourth aspect of the present invention, there is provided a circuit breaker according to the first to third aspects, wherein the output terminal of the power supply side line is a lower stage.
In this configuration, the output terminal of the ground side line is provided as an upper stage . The circuit breaker according to claim 5 is the circuit breaker according to claim 1 to claim 4 on both sides of the output terminal of the power supply side line and the ground side line.
Provide an outer wall to connect the neutral handle to the power supply side line and connection.
Between the ground terminal output terminal and the outer wall.
Between the handle and the output terminals of the power line and ground line
The configuration is such that an inner wall is provided between them. The circuit breaker according to claim 6 is such that the inner wall of claim 5 is lower than the outer wall,
Extend the operation part of the neutral handle to the upper end of the inner wall of the
There is a configuration that was put out. A circuit breaker according to claim 7 is a neutral hand according to claim 5 or claim 6.
The on and off positions of the operation part are inside the distribution board.
It is configured to be disposed at substantially the same interval with respect to the lid and near the inner lid . An eighth aspect of the present invention provides a circuit breaker according to the fifth aspect.
The output terminal of the grounding side wire according to claim 7 is provided.
From the inner wall to the outer wall on the neutral handle side
The fixed contact section extends toward the fixed contact section.
Connect the neutral movable plate with the neutral contact facing
Stored between the inner and outer walls in the body insertion direction, fixed side contact
Neutral by spring bias in the direction that separates or contacts the part
It is configured to be opened and closed by a handle . A circuit breaker according to claim 9 is a neutral movable according to claim 8.
The tip of the plate facing the fixed side contact part
A spring is applied to the proximal end of the
Abutment of housing under spring bias of neutral movable plate
The configuration is such that the portion is inclined . A circuit breaker according to claim 10 is the bias spring neutral of claim 9.
Extends toward the fixed side contact part at the tip that contacts the movable plate
This is a configuration in which a seat is formed . The circuit breaker according to claim 11 forms a positioning protruding piece extending from the tip of the biasing spring according to claim 9 or 10,
Insert the projecting piece into the neutral movable plate and
Position the neutral movable plate by inserting it into the abutting part of the housing.
Is determined . According to a twelfth aspect of the present invention, there is provided a circuit breaker according to the first to eleventh aspects.
Houses a zero-phase current transformer that passes through the ground line
In response to the output of the current transformer, the power supply side contact is shut off and / or
Ru configuration entirety in performing a display of power.

According to the structure of the first aspect, the ground side line of the electric circuit is provided.
Neutral contact inserted in the handle independent of the operating handle
External operation with the operating part protruding from the top of the housing
New open / close operation with a possible neutral handle
Since the toral device is housed in the housing, wiring between the ground side line and the load side can be prevented from running around the distribution board. Also, connect the output terminals of the power line and the ground line to the housing.
It is arranged up and down in the longitudinal direction of the ring
Attach the neutral handle to the power line and the ground line.
Arranged in the width direction of the housing for each output terminal
Therefore, even if the space between each output terminal is narrow, the insulation space is sufficient.
And the neutral handle
If the size is reduced, the width of the housing can be expanded.
It is possible to take enough size of each output terminal without increasing
it can. According to the second aspect of the present invention, in the first aspect, the handle protrusion inserted into the window hole formed in the middle lid of the distribution board is provided on the upper surface substantially at the center in both ends of the housing. by projecting the operating portion of the operating handle from
Therefore, when the inner lid of the distribution board is closed in addition to the function of claim 1, the neutral handle is hidden. According to the configuration of claim 3, in claim 1 or claim 2, d.
The neutral handle is arranged so that it swings in the same direction as the operation handle and opens and closes on the same side as the operation handle.
Because it is, in addition to the effects of claim 1 or claim 2, show ease of opening and closing state. According to the configuration of claim 4, in claim 1 to claim 3, the output terminal of the power supply side line is arranged in the lower stage, and the output terminal of the ground side line is arranged in the upper stage.
In addition to the functions of claims 1 to 3, the power supply
It is difficult to touch the output terminal of the side wire. According to the fifth aspect of the present invention, in the first to fourth aspects, the power supply side line and
Provide an outer wall on both sides of the output terminal of
Handle with the output terminal of the power line and the ground line and the outer wall.
Between the neutral handle and power line
And an inner wall between the output terminal of
Motomeko 1 in addition to the operation of claim 4, further to the power supply side line and contact
Operate the neutral handle near the ground side line output terminal.
Wear. According to the configuration of claim 6, in claim 5 , the inner wall is lower than the outer wall, and the upper end face of the inner wall is
Claim that the operation part of the neutral handle has been extended
In addition to the function of 5 , the operation part of the neutral handle
Can be taken. According to the configuration of claim 7, the claim
In claim 5 or claim 6, the neutral handle is
The ON and OFF positions of the operation unit are
At the same interval and near the inner lid.
A neutral handle in addition to the functions of claim 5 or claim 6.
When opening and closing the power supply, the output terminals of the power line and the ground line
It is hard to touch the child. According to the configuration of claim 8, the claim
In 5 to claim 7, et provided at the output terminal of the grounded side wire
From the inner wall to the neutral handle side
Extend the fixed contact section toward the outer wall, and
Neutral movable plate of neutral contact facing the part
Stored and fixed between the inner and outer walls in the insertion direction of the connection conductor
The spring is biased in the direction to separate or contact the
Since the door is opened and closed by the neutral handle , in addition to the functions of claims 5 to 7 , a neutral connection is provided in a narrow space.
Can store points. According to the configuration of claim 9, claim
8 , facing the fixed side contact portion of the neutral movable plate
The proximal end of the neutral movable plate
Side, and the spring of the neutral movable plate
Since the contact part of the housing that receives the bias is inclined,
9. The opening distance between the neutral contacts in addition to the function of claim 8.
Can be taken sufficiently. According to the tenth aspect, in the ninth aspect, the biasing spring is neutrally movable.
Extended to the fixed side contact part at the tip that abuts the plate
Since the receiving seat is formed, the spring biasing force of the neutral movable plate can be further increased in addition to the effect of the ninth aspect .
According to the configuration of claim 11, claim 9 or claim 1
0, a positioning protrusion extending from the tip of the biasing spring
Is formed on the neutral movable plate.
Insert and insert into the housing abutment
Since the position of the movable movable plate is determined , in addition to the operation of claim 9 or claim 10, the neutral handle can be repeated.
The neutral movable plate is opened and closed to contact the fixed contact
The contact position can be the same position. According to the configuration of claim 12, in claim 1 to claim 11,
Accommodate the zero-phase current transformer that passes through the power lines of the power line and the ground line.
In response to the output of this zero-phase current transformer, the power supply side contact is interrupted.
Since the display of the disconnection and / or the leakage is performed , the leakage current can be detected in addition to the functions of the first to eleventh aspects.
You.

FIG. 1 to FIG. 39 show a first embodiment of the present invention.
It will be described based on. In addition, FIG. 2 to FIG.
1 to FIG. 11 to FIG. 10, FIG. 18 and FIG.
4 to FIG. 17, FIGS. 26 to 28 to FIG.
32 to FIG. 29 and FIGS. 35 to 37 to FIG.
They should be put together, but due to space limitations,
It is divided into minutes and shown. That is, this circuit breaker
The housing 1 is formed of an insulating material such as a synthetic resin,
At one end, the input terminal 8 of the power supply side line 6 of the circuit,
Output terminal 9 of power supply side line 6 of the circuit
Equipped with an output terminal 10 for the side wire 7, and described later in the center
Into the window hole 230 formed in the inner lid 228 of the distribution board 225
Equipped with a rectangular handle projection 11
One side of the outside of the plane is sandwiched between the outer wall 13 and an inner wall 40 described later.
To operate the neutral handle 214 described later.
A window hole 12 for a neutral handle with a rectangular shape is provided.
ing. The handle protrusion 11 has a rearward left side in FIG.
Rectangular operation handle to which the operation handle 52 described
Dollar window hole 14 and large diameter upper part on the center and right side
The two operation holes 15, 16 with a small diameter through hole at the bottom
The operation of the operation handle 52 from the handle projection 11 is provided.
Working part 82 is projected. In addition, both ends are described later.
With mounting recesses 17 and 18 for mounting on panel board 225
In both cases, a neutral wire 216 to be described later is inserted.
Through holes 19 and 20 are provided. Note that the neutral wire 216
May protrude from the through-hole 19 on the input terminal 8 side of the power supply side line 6
Good.This housing 1 has an opening on the side
Side-fitting body 2 and arc isolation to isolate the arc
Body 3, terminal isolator 4, and cover 5 for closing the opening of body 2
And a housing 2, a terminal separator 4, and a cover 5.
Integrated with four caulking studs 22 in the formed caulking hole 21
Fixed to Almost the center of the inside of the container 2 is a partition wall 23
Breaking mechanism 24 that cuts off the electric circuit, and breaks and cools the arc
The first section 23A in which the arc extinguishing device 25 is disposed, and the leakage current
Leakage detection device 26 and test button 27 for detecting
The second section 23B is divided. The first section 23A has a power supply
Concave terminal groove 29 for mounting input terminal 8 of side wire 6
And gas generated in the arc extinguishing device 25 below the terminal groove 29.
And an exhaust port 30 for exhausting air. Also,
The input terminal 8 of the power supply side wire 6 is
An insulating plate 31 is provided for partitioning the bimetal 93 from the bimetal 93. Second
To install the output terminal 9 of the power supply side line 6 in the section 23B
A concave terminal groove 32 of
And a support portion 33 to which the neutral device 212 is mounted.
You. The support 33 is provided with a neutral movable plate 213 described later.
The place where it contacts the fixed side contact portion 208 of the terminal board 202 described below.
Contact surface 33a, and one end of the contact surface 33a
, To which a biasing spring 215 described later is mounted.
A recess 33b is provided. The vessel above this support 33
When the neutral handle 214 is opened inside the body 2
Inclined contact portion 34 against which the neutral movable plate 213 contacts
And provided at one end of the contact portion 34.
The positioning protrusion 22 of the biasing spring 215 described later
3 has an insertion recess 34a into which is inserted. Also this
In the second section 23B, an electric leakage detection board to be described later is provided inside the upper surface.
The groove 35 on which the
A recess 36 is formed in which the flow device 129 is mounted. further,
A tension spring 148 described later is hooked on the side surface of the partition wall 23.
Hook 37 is formed. Also, this partition wall
At the upper part of 23, an electric leakage display device 28 for displaying an electric leakage state is arranged.
Is established. Arc Isolator 3 has neutral wire 216
It has an insertion recess 38 to be inserted, and
It has a fitting projection 39 for isolating the fitting projection 39 from the through hole 19.
Into the first section 23A by fitting
2 so that the arc extinguishing device 25 and a part of the shutoff mechanism 24 are closed.
Attached to. The terminal separator 4 is the output terminal of the ground side wire 7.
10 is separated from the neutral device 212 and the earth leakage detecting device 26.
Separate inner walls 40 and 41 are provided, and the inner walls 40 and 41
Concave recess for mounting the output terminal 10 of the isolated ground side wire 7
And the terminal groove 32 of the second section 23B has a step-like shape.
Attached to be. Moreover, the inner wall 40 side of the terminal groove 42
Has a through hole 43 communicating with the contact surface 33a of the support portion 33.
ing. The cover 5 covers the opening of the body 2
To close the opening of the housing 2
Disconnection mechanism 24, arc extinguishing device 25, earth leakage detecting device 26, test button 27,
It holds the electric leakage display device 28 and the like. Shutoff mechanism 24
The open / close mechanism 44 that opens and closes the electric circuit manually and the abnormal current
Consists of an abnormal current detector 45 that opens the circuit when flowing
Have been. The opening / closing mechanism 44 is provided with a
A movable contact 46 whose intermediate portion is pivotally supported by one fixed shaft 54;
An opening spring 47 for urging the movable contact 46 in the opening direction;
One end connected to the contact 46 via the first movable shaft 57
Operation handle on link 48 and second fixed shaft 55 of frame 53
It was pivotally supported together with 52, and was held at the other end of the link 48.
A slit 71 for swingably supporting the second movable shaft 58 is formed.
The latch link 49 and the third fixed shaft 56 of the frame 53
Trip link 50 that latches latch link 49
And one end is connected to the connection link 48 via the second movable shaft 58.
The other end is connected to the operation handle 52 via the third movable shaft 59.
Handle link 51 and the second fixed shaft 55 of the frame 53
An operation handle 52 held together with a latch link 49,
First to third fixed shafts 54, 55, 56 holding these members
Frame 53 having a power supply line 6 and input / output terminals 8 and 9
And a power supply side contact 60 interposed therebetween. Yes
The moving contact 46 has an intermediate portion pivotally connected to the first fixed shaft 54 of the frame 53.
An elliptical slit 61a is provided to support
A pair of parallel leg pieces 61 and a connecting piece connecting these leg pieces 61 to each other
62 and a substantially U-shape.
A movable contact 63 that comes in contact with and separates from the fixed contact 92
A projection for hooking one end of the opening spring 47 to the other end of the connecting piece 62
Ki 64 is provided. Also, almost at the center of the connecting piece 62
Moves the movable contact 46 by inserting a movable core 102 to be described later.
Daruma hole (not shown) for forced opening in the opening direction
Is formed. Furthermore, it is obliquely upward from the middle part of the leg piece 61.
A connecting link 48 is provided at the tip extending in the direction through a first movable shaft 57.
It has a claw-shaped holding piece 65 to be connected. This movable contact
The child 46 is connected to the frame 53 via a copper stranded wire 66.
The opening spring 47 is formed in a coil shape, and one end is a movable contact.
The second yaw hooked to the projection 63 of the 46 and the other end is described later.
The movable contact 46 in the opening direction.
It is energizing. The connecting link 48 has shaft holes at both ends.
A pair of leg pieces 67 parallel to each other, and a shaft hole at one end of the leg piece 67;
And a connecting piece 68 for connecting the leg pieces 67 from the vicinity.
Of the movable contact 46 through the first movable shaft 57 in the shaft hole at one end.
The second movable shaft is connected to the holding piece 65 and the shaft hole at the other end.
Connected to latch link 49 and handle link 51 via 58
I do. The latch link 49 is a shaft that is supported by the second fixed shaft 55.
It has a hole and swingably supports the second movable shaft 58.
The slits 71 are formed in a substantially rectangular shape when viewed from the side.
A pair of legs 69 parallel to each other and from almost the center of the legs 69
And a connecting piece 70 for connecting the leg pieces 69 to each other.
That is, the connecting link 48 and the handle link 51 are second movable.
It is held swingably on the slit 71 via the shaft 58.
You. The trip link 50 is located in the middle of the vertical piece 72 and the vertical piece 72.
The side piece 73 is connected to the body.
74, bearing holes formed in the side pieces 73 and the ear pieces 74.
Through a third fixed shaft 56. Also, this trick
At the end of the side piece 73 of the link 50, a connecting piece of the latch link 49 is provided.
A locking portion 75 for locking the 70 is formed. Further
The side piece 73 is inserted and supported by the third fixed shaft 56 of the frame 53.
The side piece 73 is engaged with an upper piece 106 of a first yoke 98 described later.
A torsion coil biasing the connecting piece 70 of the latch link 49
Nine 76 is provided. At the upper end of the standing piece 72, a bimetal 93
Bimetal interlocking plate 77 that interlocks deformation and this bimetal
Provided in a direction intersecting with the interlocking plate 77, a first transmission
And a projection 78 to which the opening 159 of the delivery lever 146 is attached.
The movable iron core 102 to be described later is moved to the lower end of the standing piece 72.
A movable iron interlocking plate 79 is provided to be interlocked. Han
The dollar link 51 has a pair of parallel holes having shaft holes at both ends.
Leg piece 80, and connect the leg pieces 80 from the center of the leg piece 80.
And a second movable shaft 58 in a shaft hole at one end.
Is connected to the connection link 48 through the
It is connected to the operation handle 52 via the driving shaft 59. Operation Han
The dollar 52 is formed of an insulating material such as a synthetic resin,
Operating part 82 projecting from the handle projection 11 on the upper surface of the
And the window hole 14 of the housing 1
Along with the swinging part 83 and the latch link 49,
2 A shaft hole 85 held via the fixed shaft 55 and a spring 14
5 has a spring shaft hole 86 into which one end 154 is inserted.
And a base 84 which is the center of the base. Also this
A handle is connected to one end of the swing part 83 via a third movable shaft 59.
A protrusion 87 having a shaft hole to which the link 51 is connected is provided.
The frame 53 is a frame provided integrally with the first yoke 98.
Frame body 88 and first to third fixed to this frame body 88
Frame cover 89 connected via shafts 54, 55, 56
It is composed of The frame body 88 has a side view inside
It is formed in a substantially triangular shape with an opening,
The first to third fixed shafts 54, 55, 56 are inserted at the bottom of
The first yoke 98 is integrated with two bottom sides.
Is provided. Frame cover 89
Like the body 88, the side view has an opening inside and is roughly triangular
The top and bottom ends of each have a first
To the third fixed shafts 54, 55, 56.
You. A leg piece 90 extending downward from one end of the bottom
Side piece 91 extending from the tip of the leg piece 90 toward the frame body 88
And are connected. This frame cover 89 has copper strand 66
One of the copper strands 66 is welded to the movable contact 46.
The contact between the frame cover 89 and the movable contact 46
Are linked. The power supply side contact 60 is provided on the movable contact 46.
Provided on the movable contact 63 and the fixed contact 122 described later.
Fixed contact 92 and the input / output terminal of the power supply side line 6.
It is interposed between children 8 and 9. The movable contact 63 is as described above.
Thus, it is provided at one end of the connecting piece 62 of the movable contact 46.
The fixed contact 92 is formed on the base of a protruding piece 127 of the fixed contact 122 which will be described later.
It is provided near the end. The movable contact 63 and the fixed contact 92
Are both formed of a material that is difficult to weld. What
According to the present embodiment, the opening / closing mechanism is of a link type.
However, the contact rapidly changes to either open or closed.
It may be of a reversing type. Abnormal current detector 45
Is a bimetal 93 that detects overcurrent and a short-circuit current
And a detection electromagnet 94. bimetal
93 is made by integrating two thin plates with different coefficients of thermal expansion into one
And the whole is bent into a substantially L-shape from the vertical piece 95 and the horizontal piece 96
And generate heat and deform in accordance with the supplied current. 95 vertical pieces
A screw hole 95 into which the gap adjusting screw 97 is screwed is provided at the upper end.
a is provided. This bimetal 93
By welding a horizontal piece 96 to the lower end of the side piece 91 of the bar 89,
The power supply side line 6 is arranged near the input terminal 8. Electricity for detection
The magnet 94 is a first yoke provided integrally with the frame 53.
98, a fixed iron core 99 provided on the first yoke 98, and a fixed iron
Trip link drive rod 100 penetrating core 99 and movable iron core
A return spring 101 for biasing the movable contactor 102 toward the movable contact 46;
Movable iron core 102 forcibly opening contacts 46 and covers them
A coil cylinder 103 and a coil 10 around which the coil cylinder 103 is wound.
4 and the second yoke 105 connected to the first yoke 98
It is configured. The first yoke 98 is connected to the opposing upper piece 106.
The lower piece 107 and the connecting piece 108 are formed in a substantially U-shape via a connecting piece 108,
The upper piece 106 is connected to the frame body 88 so that
And is provided integrally with the frame 53. Fixed iron core 99
Has a through hole 110, the tip of which is connected to the first yoke 98.
Is it fitted into the fitting hole 109 formed in the piece 108 from inside?
It is fixed. The trip link drive rod 100
It is formed in a column shape longer than the fixed core 99, and penetrates the fixed core 99.
It is swingably inserted into the through hole 110. The return spring 101 is
Formed between the fixed core 99 and the movable core 102.
The movable iron core 102 is urged toward the movable contact 46 side.
ing. The movable core 102 slides inside the coil cylinder 103.
Force-opening pole 111 that is fitted in and protrudes from one end
Project from the small diameter portion of the coil cylinder 103 to the outside, and
A flange 112 is formed and penetrates the Daruma hole of the movable contact 46.
You. The coil cylinder 103 has a through-hole and has a large diameter portion and a small diameter portion.
This small-diameter portion is fitted with a second yoke 105 described later.
The fitting hole 116 is fitted from the inside. Coil 104 is a coil
An outer case is provided on the tube 103, and one end thereof is folded back in the axial direction.
And is welded to a protruding piece 191 of a terminal plate 187 described later. Also,
When welding one end of copper stranded wire 113 to the other end of coil 104
In both cases, the other end of the copper stranded wire 113 is attached to the vertical piece 95 of the bimetal 93.
Is connected to the bimetal 93 by welding.
The second yoke 105 is connected to the lower piece 114 and the lower piece 114.
And a small-diameter portion of the coil cylinder 103.
It has a fitting hole 116 to be fitted. Also, this side piece 115
A movable contact 46 is opened by hooking an opening spring 47
A hook 117 is provided for urging in the direction. Arc extinguishing equipment
The device 25 fixes the arc generated when the short circuit is interrupted to the movable contact 63.
Arc that is distant from the power supply side contact 60 consisting of the constant contact 92
Running plate 118 and arc-extinguishing grid 11 for dividing and cooling the arc
9 and body 2 and arc isolator 3 from arcing
Arc gas circulation forming an arc gas circulation channel
It is composed of the side plate 120 and separated from the exhaust port 30 of the
The cooled gas is exhausted. The arc running plate 118 is
And a stationary contact 122.
ing. The arc running plate body 118 is a rectangular sub-piece 123
And the square main piece 124 connected to the sub-piece 123
It is configured. On the center line of this arc running plate body 118
A protruding rib 125 from the sub-piece 123 to the main piece 124.
Make it easy to run the arc and avoid sticking
I have. The fixed contact 122 has a base end at the arc traveling plate body 12.
1 and the supporting piece 126
Formed near the base end of the protruding piece 127.
A fixed contact 92 is provided. Arc extinguishing grid 119, horse
The arc running plate body is formed by laminating hoof-shaped plates 128
Arranged so as to cover the main piece 124 of the 121 and cut and cool the arc.
Reject. The arc gas recirculation side plate 120 is an arc traveling plate 118.
Of the fixed contact 122 and the proximal end of the protruding piece 127 of the fixed contact 122.
It is arranged to engage with. Also, from this projection 127
Output terminal of power supply side wire 6 described later via power supply side wire 128
9 is connected to the leg piece 199 of the terminal board 194. Next, the circuit breaker
The operating principle of the structure 24 is based on FIGS. 1 to 4 and FIGS. 25 to 32.
A description will be given below. That is, the operation handle 52 is
From the off state side shown in FIG.
Latch link 49 trips when tilted toward
When the second movable shaft 58 is latched by the link 50,
The slit 71 of the link 49 is moved downward from above,
The link 48 is moved by the movable shaft 58. And this
Beyond the straight line connecting the second movable shaft 58 and the second fixed shaft 55
3 When the movable shaft 59 moves, it reverses rapidly,
The movable contact 46 connected to the connection link 48 is first fixed.
It rotates about the axis 54, as shown in FIGS.
Then, the movable contact 63 comes into contact with the fixed contact 92. At this time,
An elliptical shape in which one fixed shaft 54 is provided at an intermediate portion of the movable contact 46
Is located in the middle of the slit 61a and has a contact pressure with the movable contact 63.
Is given. Also, of the trip status,
In the ON state shown in FIG. 1 to FIG.
The gap gradually due to the self-heating of the bimetal 93
The adjustment screw 97 urges the bimetal interlocking plate 77
The trip link 50 is pushed and the latch link 49 is connected.
The tie 70 comes off the locking part 75 and is latched by the opening spring 47.
As the link 49 rotates, the movable contact 46 is first fixed.
Rotate around the axis 54 in a direction away from the fixed contact 92
You. Then, as shown in FIG. 29 to FIG.
Opening 60 and moving shaft 58 open frame cover 89.
The operation handle 52 is held in the neutral position by being hooked on the rim 89a of the mouth.
Be held. The short-circuit trip is the ON-state shown in FIGS.
When the short circuit current flows in the electric circuit in the state, the detection electromagnet 94 moves.
The iron core 102 is sucked by the fixed iron core 99. This allows
The link drive rod 100 is pushed out to enable the trip link 50.
Press the moving core interlocking plate 79 to rotate the trip link 50.
The latch link 49 is released and the movable contact
The child 46 performs the opening operation. However, the movable contact 46
Before opening the pole by linking
The collar 112 of the movable iron core 111 is movable at the same time as the operation of 102
Lock the movable contact 63 by locking it to the contact 46 and pulling it.
It is separated from the contact 92. That is, the latch link 49 is
Movable contact with the first fixed shaft 54 as a fulcrum just before being ripped
The contactor 46 pivots in the direction to compress the opening spring 47 and opens.
I do. The leakage detection device 26 is configured as shown in FIGS.
Next, a zero-phase current transformer 129 that detects the unbalanced current in the circuit,
A control circuit unit 130 for amplifying the output of the zero-phase current transformer 129,
An operation section 137 of the test button 27 described later is protruded from the housing 1.
The movable contact plate 131 which is held so as to come out
A test circuit section 141 to be described later
To generate an unbalanced current in the zero-phase current transformer 126 via the
Contact shaft 132 and ground fault detection with these mounted
Circuit board 133, and the leakage detection board 133
It is arranged near the output terminal 9 of the source side line 6. In addition, this
The earth leakage detection board and the zero-phase current transformer are provided separately.
Is also good. Neutral electric wire 21
6 form a slit 134 that can pass through. This leakage
Insert the upper end of the detection board 133 into the kerf 35 of
126 in the recesses 36 of body 2
Thus, the leakage detecting device 26 is disposed in the housing 1. Ma
In addition, the control circuit unit 130 detects that the unbalanced current flowing in the
An amplifier 135 that outputs a signal when the current is exceeded,
A thyristor that turns on when the output signal of the amplifier 135 is output
And a switching element 136 composed of
I have. The switching element 136 is a transistor
It may be configured. The test button 27 is
It is actually operated from the top and has a substantially cylindrical shape
Operating part 137 and legs extending from the lower surface of the operating part 137
138 and the operation unit 137
It is attached to the operation hole 16 so as to protrude therefrom. Also, leg 13
The tip of 8 has an incision 140 in the center to make it elastic,
When it is inserted into the operation hole 16, it is locked inside the operation hole 16.
In addition, a contact portion 139 that contacts the movable contact plate 131 is provided.
You. By pressing this test button 27, the movable contact plate
131 comes into contact with the fixed contact shaft 132 and passes through the test circuit section 141.
To generate an unbalanced current in the zero-phase current transformer 126. Test circuit
The part 141 includes a current limiting resistor 142 for limiting the current and a test winding.
And line 143. The ground fault display device 28
Then, the leakage display member 144 protruding from the upper surface of the housing 1
Then, the earth leakage display member 144 is connected to the operation hole 15 of the housing 1.
Spring 145 and the trip ring 50
First and second transmission levers for tripping the opening / closing mechanism 44
-146, 147 and the second transmission lever 147 are attached to the lower surface of the body 2.
The tension spring 148 that pulls in the direction and the control of the leakage detection device 26
The second transmission lever 14 is driven by the current amplified by the circuit unit 130.
And an electromagnet device 149 for rotating.
The electric leakage display member 144 has a cylindrical shape,
Display section 150 protruding from operation hole 15 of jing 1
The operation hole 15 can be moved forward and backward, and the spring 145
Of the first transmission lever 146 and the notch 152 into which one end of the
And a leg 151 having a locked piece 153 to be locked.
Is done. The spring 145 is formed in a coil shape and has a second fixed shaft.
55 and one end 154
And the other end 155 is in the notch 152 of the leakage indication member 144, respectively.
Inserted and attached so as to urge upward in FIG.
ing. The other end 155 has an operation handle 52 inside.
Move the operating handle 52 to the open position
Abuts on the other end of the swinging part 83 of the operating handle 52
156. The first transmission lever 146 is connected to the opening 15
9 and a vertical piece 157 that is connected to the vertical piece 157.
With the engaging portion 167 of the second transmission lever 147
It is composed of an engaging piece 158 having an engaging portion 160. Also,
Between these vertical pieces 157 and the engagement pieces 158,
The insertion recess 161 into which the third fixed shaft 56 of the
The third fixed shaft 56 is inserted into the insertion recess 161, and the opening 159 is opened.
To insert the protruding pieces 78 of the trip link 50
Therefore, the first transmission lever 146 rotates to the frame cover 89.
Held to be possible. The second transmission lever 147 is
Latch to lock the locked portion 153 of the leakage display member 144 at the tip
An oblique piece 162 having a portion 166, and a
The engaging portion 167 that engages with the engaging portion 160 of the first transmission lever 146
On the lower side of the engaging portion 163 of the oblique piece 162
It is provided in the direction intersecting with the oblique 162
Thus, the hook shaft 16 hooked on the hook portion of the tension spring 148
4 and the side of the oblique piece 162, which will be described later.
Piece 16 for locking the movable iron core 171 of the electromagnetic device 149
5 Also, these oblique pieces 162 and engaging pieces 16
3, the first fixed shaft 54 of the frame 53 is inserted.
The insertion recess 168 is provided.
By mounting the fixed shaft 54, the second transmission lever 14
7 is held rotatably by the frame cover 89.
You. According to the present embodiment, the output of the earth leakage detection device is shut off.
The transmission lever that transmits to the cutting mechanism is composed of two members.
However, the present invention can be applied to any number of members. Tension
The spring 148 is formed in a coil shape, and the second transmission lever 14
7 and hook 37 of body 2
You. The electromagnet device 149 is a coil bobbin on which a coil is wound.
169, fixed iron core 170, movable iron core 171 and yoke 17
And 2. The coil bobbin 169 is a coil
Is wound around the central part 173 and is connected to the central part 173.
A flange 174 formed so as to sandwich the central portion 173.
And both ends from one flange 174 to the other flange 174.
Has a through hole 175 formed therein. In addition, collar 17 of both ends
4 includes an upper piece 182 and a lower piece 183 of a yoke 172 described later.
A concave portion 176 is formed to be fitted into the concave and convex portions. This coil
The coil terminals 177 at both ends of the bobbin 169 are
Lead wires (not shown) are connected to the control circuit unit 130 and the test circuit unit 141.
)). The fixed iron core 170 has a substantially cylindrical shape.
The through hole 175 of the coil bobbin 169 having the cut groove 178 is formed.
 Through the holding recess 185 of the yoke 172 described later.
Is held. The movable iron core 171 is a columnar movable iron
The core body 179 and the serial connection connected to the movable core body 179
The shaft 180 and the locking piece 165 of the second transmission lever 147 are locked.
And the coiled bobbin 169
The movable core body 179 is inserted into the through hole 175
Is locked by the retaining recess 185 of the
This movable iron core 171 cannot fall from the coil bobbin 169
Absent. The yoke 172 has an upper piece 182 and a lower piece 183 facing each other.
The upper piece 182 is formed in a substantially U-shape via a connecting piece 184.
And the lower piece 183 are recesses 176 of the flange 174 of the coil bobbin 169.
Is fitted to the coil bobbin 169
Be worn. Also, the upper piece 182 and the lower piece 183 are fixed to each other.
A through hole 175 is formed between the groove 178 of the iron core 170 and the movable core body 179.
A holding recess 185 is provided to hold the
You. The leakage detecting device 26, the test button 27 and the leakage display
The operation principle of the device 28 will be described with reference to FIGS.
You. In the figure, 8 is an input terminal for connecting the power supply side wire 6,
216 is a neutral wire connecting the ground side wire 7, and 9 is negative
Output terminal of power supply side wire 6 for connecting the load, and 10 for connecting the load
This is the output terminal of the ground side wire 7. In other words, the electric circuit
When the balanced current flows, it is detected by the zero-phase current transformer 129 and the secondary current
Generates output and amplifies with amplifier 135 and switches
Turn on 136 and move the electromagnet device 149 by exciting the coil
The core 171 is attracted to the fixed core 170 side and
The locking portion 181 pushes the locking piece 165 of the second transmission lever 147.
By raising, the second transmission lever 147 is fixed to the first
Rotation about the shaft 54, the engagement of the second transmission lever 147
The portion 167 pushes down the engaging portion 160 of the first transmission lever 146.
And the first transmission lever 146 is moved about the third fixed shaft 56 as a center.
Rotates and is inserted into the opening 159 of the first transmission lever 146.
Trip line via the protruding piece 78 of the trip link 50
The lock 50 rotates about the third fixed shaft 56. After this, before
Similar to the trip operation of the breaking mechanism 24 described above, the movable contact 63 is
The power supply side contact 60 is opened by being pulled off from the fixed contact 92. Ma
In addition, the rotation of the second transmission lever 147 causes the engagement to occur.
The locked portion 153 of the leakage indicating member 144 is released from the stopping portion 166,
Attached via the second fixed shaft 55 together with the operation handle 52
The display portion 150 of the leakage display member 144 is
Is projected from the operation hole 15 of the housing 1 and
Handle 52 is held in the neutral position. In addition, leakage test
Press the test button 27 to fix the movable contact plate 131.
Abuts against the constant contact shaft 132 and gives a signal to the test circuit 141
As a result, an unbalanced current is generated in the zero-phase current transformer 129.
The movable iron core 171 is attracted by the operation of the electromagnet device 149. Obedience
Therefore, as described above, the movable contact
63 is removed from the fixed contact 92. In addition, leakage
Is the display part 150 of the display member 144 the operation hole 15 of the housing 1?
When the operation handle 52 is in the neutral position,
When the handle 52 is displaced toward the opening position,
The other end of the swing portion 83 of the handle 52 is formed on the
34, the other end 155 of the spring 145 is
Move down. As a result, the other end 155 of the spring 145 is
Insert the inserted leakage indicator 144 into the housing 1
To the locked portion of the leakage display member 144.
153 is locked by the locking portion 166 of the second transmission lever 147
You. According to the present embodiment, the display unit of the leakage display member is
Projection from the operation hole of the housing, the operation handle is in the neutral position
Position, move the operating handle toward the open position.
By doing so, the earth leakage display member becomes the second transmission lever
Locked, but move the operation handle toward the closed position.
Moving the earth leakage indicating member to the second transmission lever.
It can also be applied to one that locks to The terminal is
It consists of the input / output terminals 8 and 9 and the output terminal 10 of the ground side wire 7.
Has been established. Input terminal 8 of power line 6 is
The terminal screw 186 having the operation hole 189 of the
It has a screw hole 190 to be screwed in and a detecting electromagnet 94
Terminal plate 187 provided with a protruding piece 191 connected to the coil 104 of FIG.
And a nut having a screw hole 192 into which the terminal screw 186 is screwed.
188 and the input terminal 8 of the power supply side line 6
It is mounted in the terminal groove 29 of the first section 23A. Output of power line 6
The force terminal 9 has a driver operation hole 196 and
Terminal screw 193 with a chevron-shaped contact 197 and terminal screw
193 has a screw hole 198 into which it is screwed and has a fixed contact
Leg 199 connected from the child 122 via the power supply side wire 128
Screw with which terminal screw 193 is screwed
And a nut 195 having a hole 200.
It is mounted in the terminal groove 32 of B. Input terminal of this power supply side line 6
8 through the power side contact 60 and the power side wire 128
It is electrically connected to the output terminal 9 of the line 6. Ground side wire 7
The output terminal 10 has an operation hole 205 for a driver.
Terminal screw 201 having a chevron 206
Screw hole 207 into which the screw 201 is screwed.
Fixed side penetrating through hole 43 formed in inner wall 40 of detached body 4
A terminal plate 202 having a contact portion 208 and a terminal screw 201 are screwed together.
Nut 203 having a screw hole 209 to be
It has a through hole 210 that overlaps the screw hole 207 and
A cover 211 covering the output terminal 9 of the side wire 6 was provided.
The output of this ground side line 7
Terminal 10 is the terminal groove 32 in which the output terminal 9 of the power supply side wire 6 is mounted.
It is mounted in the terminal groove 42 of the terminal separator 4 that is the upper stage. D
The neutral device 212 is connected to the fixed side contact portion 208 of the terminal plate 202.
The neutral movable plate 213 that contacts the
Neutral that presses the movable plate 213 against the fixed contact portion 208
Fixed handle 214 and neutral movable plate 213
A biasing spring 215 for biasing away from the contact portion 208
Composed of neutral wire 216 connected to ground side line 7
Have been. The neutral movable plate 213 is made of a conductive material.
It is formed in a rectangular shape, and has an end at a position of an urging spring 215 described later.
If there is an insertion hole 217 through which the positioning protrusion 223 is inserted,
In addition, one end of the neutral wire 216 is fixed by welding or the like.
Between the outer wall 13 and the inner wall 40 and the fixed side contact portion 208.
It is disposed on the contact portion 34 of the container 2 so as to face. This news
Neutral between the central movable plate 213 and the fixed contact portion 208
Contact 218 is configured. Neutral handle 214
Is an insulating material such as a synthetic resin and has a substantially elliptical shape in side view.
And rotate to strike the neutral movable plate 213.
The annular part 219 in contact with the body 2 is recessed in the home position (not shown).
Rotation support shaft 220 which is convexly fitted and becomes the center of rotation, and on inner wall 40
Operated from outside of housing 1
The operation unit 221 and the neutral movable plate 213 are
And a projection 222 pressing against the housing 208.
The operating part 221 protrudes into the window hole 12 for the neutral handle
So that it is disposed inside the housing 1. Biasing spring 21
5 is an elastic member formed in a coil shape,
By mounting in the mounting recess 33b of 33, the neutral
Movable plate 213ofFixed contact 208The tip side opposite to
Let goDirectionSpring the proximal end of the neutral movable plate 213Attached
I'm going. Also, the positioning protrusion of the biasing spring 215
223 is inserted through the insertion hole 217 of the neutral movable plate 213
By inserting it into the insertion recess 34a of
The positioning of the movable movable plate 213 is performed. In addition,
Neutral movement of spring 215BoardAt the tip that abuts 213
Is designed to increase the area biased to the neutral movable plate 213.
The seat 224 is provided. One end of neutral wire 216 is
Fixed to one end of the neutral movable plate 213 and the zero-phase current transformer 12
9 and leakage detection through the insertion recess 38 of the arc isolator 3
It is inserted into the slit 134 of the board 133, and the circuit is blocked from the insertion hole 20.
Connects to the grounding side (not shown) by
Continued. Next, the neutral device 212 is opened and closed.
The method will be described with reference to FIG. That is, in the figure
The broken line indicates that the neutral handle 214 is
In this state, the neutral movable plate 213 is opened. This state
Then, the neutral movable plate 213 is
It is in contact with the contact portion 34 of the container 2 by the bias. This state
The operating part 221 of the neutral handle 214
Rotate to make the neutral handle 21
The tip of the projection 222 formed in FIG.
3 and the neutral movable plate 213 is
It is pressed to contact 208. Then, the protrusion 222
Push the neutral movable plate 213 over the center of the tip
The tip of the projection 222 is moved by the pressing force of the urging spring 215 as shown in FIG.
At 8 press right diagonally upward and neutral hand
214 attaches the neutral movable plate 213 to the fixed contact portion 208.
It is fixed in contact. Next, disconnect this circuit breaker.
A method of assembling the electric board will be described with reference to FIG. Figure
In, 225 is a distribution board, which is equipped with a circuit breaker.
A receiving frame 226 having a mounting bracket 229 and an opening of the receiving frame 226
Door 227 that opens and closes and handle protrusion 11 of the circuit breaker is inserted
Has a window frame 230 to cover the area other than the handle projection 11
And an inner lid 228. Mounting bracket for this receiving frame 225
The tool 229 is inserted into the mounting recesses 17 and 18 of the circuit breaker.
Therefore, the circuit breaker is incorporated in the distribution board 225. next,
Second Embodiment A second embodiment of the present invention will be described with reference to FIGS.
I do. The members having the same basic functions as those of the first embodiment are
The same reference numerals are given. Housing 1 for this circuit breaker
Is made of an insulating material such as a synthetic resin, and the components
The input terminal 8 of the power line 6 of the circuit and the ground line 7 of the circuit
Input terminal 231 and the other end of the power supply side line 6
And an output terminal 10 for the ground side line 7 of the circuit.
At the center of the window, which is inserted through the window hole formed in the middle lid of the distribution board
A rectangular handle projection 11 is formed, and
Is sandwiched between the outer wall 13 and an inner wall 40 described later on one side of
Rectangle for operating neutral handle 214
Window hole 12 for neutral handle
You. The handle protrusion 11 is slightly leftward in FIG.
A rectangular operation housing to which an operation handle 52 described later is attached.
A window hole 14 for handle is provided.
The operation section 82 of the operation handle 52 is projected from the front. this
The circuit breaker housing 1 is shown in FIGS.
As shown in the figure, the power supply side interposed between input / output terminals 8 and 9 of power supply side line 6
Open / close the contact 60 and the power-side contact 60, and the top of the housing 1
The power supply side has an operation handle 52 with the operation unit 82 protruding further.
Force the power-side contact 60 in response to an abnormality in the current flowing through line 6.
The breaking mechanism 24 that opens, and the side that houses the breaking mechanism 24
Is a space provided between the outer wall 13 and the inner wall 40 on the opposite side.
And a neutral device 212. Power contact 60
Is a movable mechanism provided on a contact driving plate of a breaking mechanism 24 described later.
It comprises a contact 63 and a fixed contact 92 provided on a terminal plate 187.
Between the input / output terminals 8 and 9 of the power supply side line 6.
You. The shut-off mechanism 24 includes a movable contact 63 that can freely contact and separate from the fixed contact 92.
A contact drive plate 232 having a substantially U-shape
Opening that biases the movable contact 63 of the point drive plate 232 in the opening direction
While fixing the pole spring 47 and one end to the contact drive plate 232,
The other end is a free end, and a cover is provided inside the contact drive plate 232.
Immetal 93 and window 14 for operation handle of housing 1
The operating section 82 is projected from the
The operation handle 52 connected to the contact drive plate 232 with
It is connected to the drive plate 232 and latched at the other end of the bimetal 93.
Latch link 50, and the latch link 50 and the operating hand.
Handle link 51 connecting the base 84 of the
ing. The contact drive plate 232 has a movable contact 63 on one side.
And a latch link 50 on the other side via a fixed shaft 56.
Are rotatably connected. In the center,
One side 48a of the connecting link 48 is fitted to
Connected. The operation handle 52 is connected to the base 84
One end 51a of the handle link 51 has a protrusion 87 to be fitted,
The other end 51b of the handle link 51 is fitted to the latch link 50.
The operation handle 52 and the latch link 50 are
Connected. Also, at the center of the base 84 of the operation handle 52
Is connected to the other side 48b of the connecting link 48 (fixed to the housing 1).
Is connected to the contact drive plate 232
Tied. The shut-off mechanism 24 is provided with the operation handle 52 as shown in FIG.
From the off state shown in FIG. 0 to the on state shown in FIG.
The handle 84 as the base 84 of the operation handle 52 rotates.
The latch link 50 is shown in FIG.
Pivoted clockwise and the tip is the free end of the bimetal 93.
Start pressing. And one end 51a of the handle link 51
Represents a straight line connecting the other side 48b of the connecting link 48 and the fixed shaft 56.
When it moves over, the contact drive plate 232 is fixed to the housing 1.
Rapidly flips around one side 48a of the specified connecting link 48
Then, the movable contact 63 comes into contact with the fixed contact 93 (see FIG. 46).
See). If an abnormal current such as an overcurrent flows,
The metal 93 is bent downward in FIG.
When the link 50 is latched, the tip of the latch link 50 is fixed.
Rotates clockwise around fixed axis 56 and drives contacts
The plate 232 is moved by the opening spring 47 to one side 48a of the connecting link 48.
To move the movable contact 63 away from the fixed contact 92 (Fig.
47). The neutral device 212 is shown in FIG.
As shown in the figure, the neutral movable plate
213 and this neutral movable plate 213
8 and the neutral handle 214
The movable plate 213 in the direction of contact with the fixed side contact portion 208.
The biasing spring 215 for biasing and the fixed side contact portion 208 are electrically connected.
And a neutral conductor 216 connected thereto.
You. The neutral movable plate 213 is formed of a conductive material.
The fixed contact portion 20 is fixed between the outer wall 13 and the inner wall 40 by the fixed portion 233.
Fix the center to face 8 and fix the center around this center.
One end and neutral hand that contact the fixed contact part 208
Terminal 214 is rotatably held, and the terminal plate 20
2 (see FIG. 40). This neutral movable
The neutral contact 218 is formed between the plate 213 and the fixed side contact portion 208.
Be composed. Neutral handle 214 is made of synthetic resin, etc.
Insulation material is generally elliptical in side view.
Ring part 219 that contacts the movable plate 213 and the housing 1
The rotation support shaft 220, which becomes the center of rotation,
It is extended from the upper end face and operated from outside the housing 1.
Operation part 221 and neutral movable plate 213
And a projection 222 pressed in a direction to separate from the portion 208.
Into the window hole 12 for the neutral handle of the housing 1.
Arranged inside housing 1 so that operation unit 221 protrudes
Is done. The biasing spring 215 is a coil-shaped member having elasticity.
And the neutral movable plate 213 is fixed to the fixed contact portion 20.
8 in the direction of contact. Neutral conductor 21
6 has one end electrically connected to the fixed contact portion 208 and the other end
It is connected to the input terminal 231 of the ground line 7. This new
A method for opening and closing the toral device 212 will be described with reference to FIG.
I will tell. The dashed line in the figure indicates neutral neutral
Defeated handle 214 and opened neutral movable plate 213
State. In this state, the neutral movable plate 213
Is fixed by the projection 22 of the neutral handle 214.
It is separated from the contact portion 208. In this state,
Raise the operation part 221 of the ral handle 214
When rotated, the annular portion 219 of the neutral handle 214
Abuts against the neutral movable plate 213 and the urging spring 215
Therefore, it is pressed and comes into contact with the fixed side contact portion 208. This news
The operation unit 221 of the neutral handle 214 is as shown in FIG.
As shown, the ON position (solid line) and the OFF position (dashed line)
Protruding from the outer surface of the
Almost at the same distance from the lid and near the inner lid
). According to the present embodiment, the neutral movable plate
The spring is biased in the direction to contact the fixed side contact part,
Fixed side connection by operating the neutral handle
If it can contact the touching part, it is fixed as in the first embodiment.
Even if the spring is biased in the direction to separate from the fixed side contact part
Good.

[Effect of the invention] The circuit breaker of claim 1, wherein the path of contact
The neutral contact inserted into the ground side line and the operation handle
Is the outside with the operating part protruding independently from the top of the housing
Open / close operation with neutral handle that can be operated
Since the neutral device is housed in the housing,
Wiring between the ground side line and the load side can be performed without running around the inside of the distribution board, so that there is an effect that wiring work is easy and an insulation test on the load side can be easily performed. In addition, the power line and ground
Move each output terminal of the side wire up and down in the longitudinal direction of the housing.
In addition to disposing it unevenly, the neutral handle
Housing for each output terminal of power supply side line and ground side line
Are arranged in the width direction of the
Even if it is not enough, you can have enough insulation space,
By reducing the size of the neutral handle,
The size of each output terminal can be increased without increasing the width of the housing.
If you can take enough size and make it compact
This has the effect. According to a second aspect of the present invention, there is provided the circuit breaker according to the first aspect, wherein a handle projection inserted into a window hole formed in the middle lid of the distribution board is provided on an upper surface substantially at the center in both ends of the housing. since then projected operating portion of the operating handle from, in addition to the effect of claim 1, neutral handle when closing the lid in the distribution panel is concealed, an effect that does not accidentally opened and closed neutral handle. According to a third aspect of the present invention, in the circuit breaker according to the first or second aspect, the neutral handle is arranged so as to swing in the same direction as the operation handle to open and close on the same side as the operation handle. since the are, in addition to the effect of claim 1 or claim 2, can display easily understandable closed state,
Errors in opening and closing operations can be reduced. According to a fourth aspect of the present invention, in the circuit breaker according to any one of the first to third aspects, the output terminal of the power supply side line is a lower stage, and the output terminal of the ground side line is an upper stage.
Having disposed, in addition to the effects of claims 1 to 3, electrostatic
It is said that it is difficult to touch the output terminal of the source side wire and it is difficult to get an electric shock
Has the effect of The circuit breaker according to claim 5 is the claim.
In 1 to claim 4, the output of the power supply side wire and a ground side line
Power supply for the neutral handle by providing outer walls on both sides of the terminal
It is located between the output terminal of the side line and the ground side line and the outer wall,
Output of the neutral handle, power line and ground line
Is provided with the inner wall between the force terminal, in addition to the effects of claims 1 to 4, further the output terminal of the power supply-side line and a ground side line
The neutral handle can be operated in the vicinity.
Handle can be stored compactly. In the circuit breaker according to claim 6, the inner wall is lower than the outer wall in claim 5 .
The neutral handle is located on the upper end of the inner wall.
Since part was extended to, in addition to the effect of claim 5, Newt
It can be widened the operating unit of Lal handle, New door
Ral handle can be easily operated. Circuit breaker according to claim 7, in claim 5 or claim 6, Nutra
Handle separates the on and off positions of the operating part.
Installed at approximately the same distance from the inner lid of the panel board and near the inner lid
When opening and closing the neutral handle
In addition, it is difficult to touch the output terminals of the power line and the ground line.
In addition to the effects of claim 5 or claim 6,
It has the effect of squeezing. Circuit breaker according to claim 8, wherein, in the claims 5 to 7, the output terminal of the grounding side line
That is installed on the
Extend the fixed contact section toward the outer wall on the
Neutral of the neutral contact facing the fixed contact
The movable plate between the inner wall and the outer wall in the insertion direction of the connection conductor.
, Spring biased in the direction to open or contact the fixed side contact part
Was opened and closed by the neutral handle.
In addition to the effects of claims 5 to 7, a new space
Can accommodate neutral contacts. According to a ninth aspect of the present invention, in the circuit breaker according to the eighth aspect , a fixed side connection of the neutral movable plate is provided.
Neutral is possible in the direction in which the tip side facing the contact part is separated
The base end of the moving plate is spring-biased and neutral
The contact part of the housing that receives the spring bias of the moving plate is inclined.
The opening distance between the neutral contacts is sufficient.
9. In addition to the effect of claim 8, the neutral
Contacts can be opened and closed smoothly. According to a tenth aspect of the present invention, in the circuit breaker according to the ninth aspect, the bias spring can be neutralized.
Extends toward the fixed side contact part at the tip that abuts the moving plate
Springs of the neutral movable plate
The force can be further increased, and in addition to the effect of claim 9,
The effect is that it is easy to open the neutral movable plate.
You. According to the eleventh aspect, in the ninth or tenth aspect, the positioning projection extending from the distal end of the biasing spring.
Form protrusions and neutralize this positioning protrusion
Through the plate and into the abutment of the housing
Since the position of the neutral movable plate has been determined,
Neutral movable plate by repeatedly opening and closing the handle
Can be set to the same position where the
In addition to the effects described in claim 9 or claim 10, stable
Contact reliability can be ensured. According to the configuration of claim 12, in claim 1 to claim 11, the power supply side line and
The zero-phase current transformer that passes through the ground side line
In response to the output of the phase current transformer, the power supply side contact is cut off and / or
Since the display of leakage, in addition to the effects of claims 1 to 11, Ru can be detected leakage current.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention.

FIG. 2 is a partial longitudinal sectional view of FIG.

FIG. 3 is a partial longitudinal sectional view of FIG.

FIG. 4 is a partial longitudinal sectional view of FIG.

FIG. 5 is a perspective view showing a state where a cover is attached to FIG. 1;

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a front view of FIG. 5;

FIG. 8 is a side view of FIG. 5 viewed from the input terminal side of the power supply side line.

FIG. 9 is a side view of FIG. 5 viewed from the output terminal side of the power supply side line.

FIG. 10 is an exploded perspective view of FIG.

FIG. 11 is a partially exploded perspective view of FIG.

FIG. 12 is a partially exploded perspective view of FIG.

FIG. 13 is a partially exploded perspective view of FIG.

FIG. 14 is a partially exploded perspective view of FIG.

FIG. 15 is a partially exploded perspective view of FIG.

FIG. 16 is a partially exploded perspective view of FIG.

FIG. 17 is an exploded perspective view of FIG. 10 further exploded.

FIG. 18 is a partially exploded perspective view of FIG.

FIG. 19 is a partially exploded perspective view of FIG. 17;

FIG. 20 is a partially exploded perspective view of FIG. 17;

FIG. 21 is a partially exploded perspective view of FIG.

FIG. 22 is a partially exploded perspective view of FIG.

FIG. 23 is a partially exploded perspective view of FIG.

FIG. 24 is a partial exploded perspective view of FIG.

FIG. 25 is a longitudinal sectional view showing a state where the operation handle of FIG. 1 is turned on.

FIG. 26 is a partial longitudinal sectional view of FIG. 25.

FIG. 27 is a partial longitudinal sectional view of FIG. 25.

FIG. 28 is a partial longitudinal sectional view of FIG.

FIG. 29 is a longitudinal sectional view showing a tripped state of the one shown in FIG. 1;

FIG. 30 is a partial longitudinal sectional view of FIG. 29.

FIG. 31 is a partial longitudinal sectional view of FIG. 29;

FIG. 32 is a partial longitudinal sectional view of FIG. 29.

FIG. 33 is a circuit diagram of the leakage detecting mechanism of FIG. 1;

FIG. 34 is a vertical cross-sectional view for explaining a trip operation of FIG. 1 due to electric leakage.

FIG. 35 is a partial longitudinal sectional view of the one shown in FIG. 34;

FIG. 36 is a partial longitudinal sectional view of the one shown in FIG. 34;

FIG. 37 is a partial longitudinal sectional view of the one shown in FIG. 34;

FIG. 38 is a longitudinal sectional view showing the neutral device of FIG. 1;

FIG. 39 is a longitudinal sectional view showing a state in which the one shown in FIG. 5 is incorporated in a distribution board.

FIG. 40 is a longitudinal sectional view showing a second embodiment of the present invention.

FIG. 41 is a front view showing a state where a cover is attached to the one in FIG. 40;

FIG. 42 is a top view of that of FIG. 41.

43 is a side view of FIG. 42 viewed from the input terminal side of the power supply side line.

44 is a side view of FIG. 42 viewed from the output terminal side of the power supply side line.

FIG. 45 is a rear view showing the state of FIG. 40 with the rear cover removed.

46 is a longitudinal sectional view showing a state where the operation handle of FIG. 40 is turned on.

FIG. 47 is a longitudinal sectional view showing a tripped state of the one of FIG. 40.

FIG. 48 is a front view showing a state where a conventional circuit breaker is incorporated in a distribution board.

[Explanation of symbols]

 1 Housing 6 Power line 7 Ground line 8 Power line input terminal 9 Power line output terminal 24 Shutoff mechanism 52 Operation handle 60 Power supply contact 82 Operation handle operation part 214 Neutral handle 218 Neutral contact

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 2-74733 (JP, U) JP-A-404653 (JP, Y1) JP-A-40-2565 (JP, Y1) (58) Field (Int.Cl. ⁷ , DB name) H01H 73/00

Claims (12)

(57) [Claims] An input terminal connected to a power supply side line of an electric circuit is mounted on one end of a housing and a power supply side line of the electric circuit is provided.
Output terminal connected to the
Power terminal and the other end of the housing .
Responds to abnormalities in the current flowing through the power supply side line with an operation handle that opens and closes the power supply side contact in response to the power supply side contact interposed between the input and output terminals of the power supply side line and the opening and closing operation and protrudes the operation part from the top surface of the housing Mechanism to forcibly open the power contact on the power supply side, and a neutral inserted in the ground side line of the electric circuit
The contact is independent of the operation handle from the top of the housing
Externally operable neutral hand with protruding operating section
And a neutral device that is opened and closed by a switch, and a circuit breaker in which the output terminals of the power supply side line and the ground side line are connected to the housing.
In addition to being arranged vertically differently in the longitudinal direction,
Connect the neutral handle to each output of the power line and the ground line.
A circuit breaker, which is disposed in a width direction of a housing with respect to a force terminal . 2. A handle projection, which is inserted into a window hole formed in a middle lid of a distribution board, is provided on an upper surface substantially at the center in both ends of a housing, and an operating portion of an operation handle projects from the handle projection . 2. The circuit breaker according to claim 1, wherein: Wherein said neutral handle opening, on the same side as the operating handle swings in the same direction as the operation handle
3. The circuit breaker according to claim 1, wherein the circuit breaker is disposed so as to be closed. 4. An output terminal of the power supply side line is a lower stage, and
4. The circuit breaker according to claim 1, wherein an output terminal of the ground side line is disposed as an upper stage . 5. An output terminal of the power supply side line and the ground side line .
Provide outer walls on both sides and connect the neutral handle to the power supply side line.
Between the output terminal of the grounding side wire and the outer wall, and
Output terminal of the neutral handle and the power supply side line and the ground side line
The circuit breaker according to claim 1, wherein an inner wall is provided between the circuit breaker and the circuit breaker. 6. The inner wall is made lower than the outer wall.
The upper end face was extended an operation unit Neutral handle
The circuit breaker according to claim 5 , wherein: 7. The operation of the neutral handle
The on and off positions of the part are approximately the same with respect to the middle lid of the distribution board.
A contract that is arranged at one interval and near the inner lid
The circuit breaker according to claim 5 or claim 6. 8. An output terminal provided on the ground side line.
From the inner wall to the outer wall on the neutral handle side
The fixed contact section extends toward the fixed contact section.
Connect the neutral movable plate with the neutral contact facing
Stored between the inner and outer walls in the body insertion direction, fixed side contact
Neutral by spring bias in the direction that separates or contacts the part
5. The door is opened and closed by a handle.
The circuit breaker according to claim 7. 9. A fixed-side contact portion of the neutral movable plate.
Neutral movable plate in the direction in which the tip side facing
Spring bias on the proximal end of the
The contact part of the housing that receives the spring bias of
9. The circuit breaker according to claim 8, wherein: 10. The neutral movable plate of the biasing spring
At the abutting tip, a seat extending toward the fixed side contact part
10. The circuit breaker according to claim 9, wherein the circuit breaker is formed. 11. A positioning extending from a tip of the biasing spring.
Form a projecting piece and neutralize this positioning projecting piece
Insert it into the movable plate and insert it into the housing abutment.
The circuit breaker according to claim 9 or claim 10, wherein the position of the neutral movable plate is determined by means of: 12. An electric circuit for the power supply side line and the ground side line is inserted.
Accommodating the output of the zero-phase current transformer.
To shut off the power supply side contact and / or display the leakage.
The circuit breaker according to claim 1 to claim 11 .