JPS6030030A - Remote control type 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 [Technical Field] This invention relates to a remote controlled circuit breaker.

[Background technology]

Conventional remote control interrupters of this type have an on/off holding function in the contact opening/closing mechanism. For this reason, the electromagnet does not require a sufficient capacity to remove the holding mechanism, which has the drawback of making it difficult to use a breaker as a breaker and to reduce the operating power of the electromagnet.

[Purpose of the invention]

Therefore, it is an object of the present invention to provide a remote control type circuit breaker that can be used as a breaker and that can reduce the operating power of the electromagnet.

(Disclosure of the invention) Hitoshi's first invention is to bias a contactor facing a fixed contactor to open with a spring, connect a contactor link to a movable contactor with a first shaft, and Connect the connecting link to the link with a second axis,
A plunger of a bistable electromagnet is connected to the connecting link by a third axis, and the reciprocating direction of the plunger is set as described above.
A link is provided that moves the connecting link so that it is approximately parallel to the movable direction of the contact, and that the second axis approaches the plane connecting the first axis and the third axis, and this link is called a launch link. The lower end of the handle, which is latched by the handle and driven by the detection means and further rotated in the same direction as the reciprocating direction of the granger, is engaged with the front six-piece connecting link. Therefore, the conventional holding machine sIi is no longer required, and the holding machine (capacity for removing the bay) is no longer required, so even if the electromagnet is bistable, the overall size can be reduced, and the operating power can be further reduced. be able to.

The simple side of this invention is shown in FIGS. 1 to 6. In other words, this remote controller #2 circuit breaker can be broadly classified into body 1. It consists of terminals 2a, 2b, a switch 1, a madder section 3, a bistable electromagnet 4, and a detection bimetal 5. The container body 1 consists of a main body 6 which has an opening on the side and parts are fitted sideways, and a cover 7 which opens the opening, and is fixed together with four rivets 8. 1 atr
i This is the mounting groove.

The terminals 2a and 2b are connected to the terminal board 9. Terminal screw 10. It consists of a power terminal 2af and a load terminal 2b, which are each made up of a terminal NAND 11 and a wire 12, and are installed at both ends of the vessel body 1, respectively.

In the opening/closing mechanism section 3, a mechanical frame 13 is formed into a substantially U-shape (when viewed from above) by caulking with a caulking section 14, and sea-handle support pieces 15 extend from the upper edges of both sides of the mechanical frame 13.
This mechanism 7 frame 13 is fixed within the vessel body 1 by a shaft to be described later. A fixed contact 16 constituting the opening/closing section is integrally formed with the terminal plate 9 of the load terminal 2b and supported on the inner wall surface of the container body 1, and a fixed contact 17 is fixed to the tip thereof. One movable contactor 18 is provided with a contactor shaft 19 at its lower end.

The contact shaft 1 passes its lower end vertically through the mechanical frame 13 and is inserted into the bearing notch 20 formed at the lower end of both sides of the mechanical frame 130.
9 is fitted, and a 9-movement contact 21 is provided at the upper end, facing the fixed contact 17. Then, the contact spring 22 is compressed and interposed between the movable contact 18 and the end wall of the mechanical frame 13, and the contact spring 22 is attached to each of the movable contacts 18 to prevent it from coming off.
x23 and x24 are formed. The movable contact 18 is energized by the spring 22 to open the movable contact 18. Movable contact 18
A first shaft 25 is provided at a position between the movable contact 21 and the spring support part (24), one end of the contact link 26 is supported pivotally on this, and the other end of the contact link 26 is provided with a first shaft 25. A second shaft 27 is provided, through which one end 29 of a U-shaped connecting link 28 is passed, and a third shaft 31 is provided in the other end hole 30 of the connecting rick 28. Further, a U-shaped link 33 is formed by bending a shaft rod into an intermediate hole 32 in a portion adjacent to the second shaft 27 of the connecting link 28 into a trowel shape.
A vertical slid (movable contact 18
(perpendicular to the direction of movement) 36.

The launch link 37 has a latte part 38 at the top, a moving piece 39 at the side, and a shissote link shaft 40 completely passed through the middle part.
t'L is supported in the shaft hole 4 at the bottom of the vertical slit 36 of the mechanical frame 13, and the coil part of the launch link spring 42 formed by a screw coil spring is attached to the launch link shaft 4.
0 and connect both ends to the mechanical frame 13 and the latch link 37.
By this, the latch part 38 is positioned at a position where it intersects the vertical slit 36 by appropriate means, and a guiding curved part 43 is formed on the upper edge of the latch part 38, and the lower part of the U-shaped link 33 is 35 moves to the lower end of the vertical slit 36, the latch portion 38 is pushed open so that the lower piece 35 is launched. The nondle 44 is provided with a nondle shaft 45 in its intermediate portion, which is passed through a hole 46 in the handle support piece 15 of the mechanical frame 3 so as to rotate in the same direction as the movable contact 18. The distal end of the handle 44 has a notched recess 47 which is engaged with the end piece 28a of the connecting link 28, and the operating section 48 on the opposite side of the distal end is extended from the handle hole 49 of the container body 1. The mechanism 7 frame 13 is fixed by positioning the protrusions at both ends of the shafts 40 and 45 in holes (not shown) in the vessel body 1.

In the bistable electromagnet 4, a coil 51 is wound around a coil frame 50, a pair of U-shaped magnet small yokes 52a and 52b are fitted on both sides of the coil frame 50, and each small yoke 52a
, 52b are attracted to the same polar sides (fc, for example, N pole) of the permanent magnets 53a and 53b.
3a.

A pair of U-shaped large yokes 54a and 54b are attached to the protruding piece 55 of the coil frame 50 so as to be attracted to the coil frame 53I) by magnetic force.
a.

The plunger 56 is slidably passed through the cavity of the coil frame 50, and the small yoke 5 of the plunger 56
15 between 2a, 52b and large yokes 54a, 54b
Armatures 57a and 57b are provided at one position, and one end of the plunger 5G is configured to protrude outward. This electromagnet 4 is connected to the partition wall 5 of the container 1 in the form of a combination as described above.
The terminal board 60 of a pair of operation terminals 59 is connected to both ends of the coil 51, and the terminal board 60 is installed above the power terminal 2a of the body 1. , the terminal plate 60 is provided with a terminal screw 61.
Ru. °Also, the plunger 56 is housed in the vessel 1.
The shaft hole 56a of the protruding end of the granger 5G is connected to the third 41131.

The operation of this bistable electromagnet 4 is based on the armature 57a of the granger 56.

57b is in the state shown in FIGS. 2 and 5, and the yoke 52a15 is
When contacting 2b, 54a, 54b, permanent magnets 53a + 53b create a stable state. That is, the granger 56 has two stable positions: a stable position on the protruding side (FIG. 2) and a stable position on the retreating side, and is reversed from one of the stable states to the other by energizing the coil 51 in one direction or the opposite direction. .

The base end of the bimetal 5 is held by being connected to the terminal plate 9 of the power terminal 2a (it may be fixed by caulking), and the operating end is provided with an adjustment screw 62, the tip of which is connected to the moving piece 39 of the latch link 37. They are facing each other.

A street electric wire 63 such as copper wire is welded between the reeded operating end and the shaft support side end of the movable contact 18.

As a result, the power supply terminal 2a and the load terminal 2b, ! : Ganoku Inotaru 5. Town Telephone @63. Movable contact 18° Movable contact 21. They are connected by a fixed contact 17 to form an internal electrical circuit.

The operation will be explained. First, in the on state, as shown in FIG. 2, the lower piece 35 of the fold-back link 33
This is a case where the granger 56 of the electromagnet 4 is latched to the stable position on the protruding side.

By the latch of the latch link 37, the connecting link 28 is pulled to the U-shaped link 33, and the second shaft 27 is connected to the first shaft 25.
The position approaches the plane containing the third axis 31, and the axis 2
5.31 is farthest from each other, and due to the dimensional relationship, the excitation contact 18 is pushed and the movable contact 21 becomes the fixed contact 1.
Contact 7. In this case, by moving the contact link 26 by a predetermined amount further than the position where the movable contact 21 contacts the fixed contact 17, the #JM7 contactor 18 is moved. The contact spring 22 is compressed by rotating the contact 21 as a reference point, thereby creating a VC contact pressure at the contact 17°21.At this time, the contact shaft 19 moves inside the notch 20 to the extent shown in FIG. In this case, the inner end of the notch 20 is floating in a floating state.Roughly speaking, the handle 440 is in the on state when the handle 44 is tilted in this on-down position. By means of permanent magnets 53a and 53b of the electromagnet 4.The on operation is performed by passing current through the coil 51 and moving the granger 56 to the position shown in the figure, or by operating the handle 44.

As shown in FIG. 5, the off state is a state in which the U-shaped link 33 is latched and the granger 56 is held at a stable position on the backward side. As the granger 56 retreats, the movable contact 18 opens. The operation is performed by energizing the electromagnet 4 from the ON state to reverse the plunger 56, or by reversing the plunger 44.

In the triangular state, as shown in FIG. 6, when an overcurrent of more than a predetermined value flows through the electrical circuit, the bimetal 50 self-heats and bends toward its low expansion side, and when the bimetal 50 bends by a predetermined amount, the adjustment screw 62 is moved by the latch link 37. A tripping operation is performed in which the latch portion 38 is removed from the lower piece 35 of the U-shaped link 33 by pushing the piece 39. As a result, due to the action of the contact spring 220, the second shaft 2
7 leaves the plane containing ial and the third axis 25.31, and the movable contact 18 performs an opening operation. At this time, since the granger 56 remains fixed, the connecting link 28 is connected to the third
The handle 44 is rotated about the axis 31, and the handle 44 is in a vertical position 9, so that a trisometric display is displayed.

Incidentally, the reset is performed when the bimetal 5 is returned to its original state, and therefore the latch link 37 is returned to its original position by the spring 42, and the coil 51 is energized to move the plunger 56 to the stable position on the backward side, and the handle 44 is turned to the off side. Yes.

In addition, in this invention, the detection means is not limited to the bimetal 5, but may be of an electromagnetic type or the like.

〔Effect of the invention〕

As mentioned above, the remote control type circuit breaker of this invention can be solved by using a bistable electromagnet.
This has the effect of being able to be made smaller and reducing operating power.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a perspective view of the hero side of this invention, Fig. 2 is a cross-sectional view of the device in its on state, Fig. 3 is a perspective view of the device with the body removed, and Fig. 4 is a perspective view of the hero side of the invention. FIG. 5 is an exploded perspective view thereof, FIG. 5 is a cross-sectional view in the OFF state, and FIG. 6 is a cross-sectional view in the trip state. 4... Bistable electromagnet, 5... Bimetal (detection means), 16... Fixed contact, 18... Movable contact, 2
2... Contact spring, 25... First shaft, 26... Contact link, 27... Second shaft, 28... Connection link, 31... Third shaft, 33 ...U-shaped link (Link, 37...Lunch link, 44...Handle,
56. Written amendment to plunger procedure (voluntary) October 31, 1988, Director-General of the Hγ Agency, Remote Control Type Circuit Breaker 3, Relationship with the person making the amendment Applicant Address: Osaka Fumon ↓ 1 City Oaza Kadoma 1048 address name
(583) Matsushita Electric Works Co., Ltd. Representative Iku Kobayashi 4, Agent 5, Date of amendment order: j 1925, month, day Voluntary amendment 6, Specification subject to amendment 7, Contents of amendment (1) of the specification Amend the claims by adding a separate document. (2) From line 20 on page 2 to line 11 on page 3 of the specification, the phrase ``The movable contact is characterized by...'' has been replaced with ``the movable contact has one end of the contact link.'' A connecting link is pivotally connected to the other end of the contact link, and a latch link normally restricts the rotation of the connecting portion of the contact link and the connecting link, but releases the restriction during tripping, and the latch link is The detecting means is used to move the reciprocating movement, and the handle of the substantially central pivot is linked to the connecting link, and the plunger for opening and closing the movable contact of the bistable electromagnet is linked to the connecting link, so that the positions of both ends of the reciprocating movement of the plunger are determined as described above. It is characterized by being held with a force greater than the reaction force of the spring.'' 2. Scope of claims

Claims (1)

[Claims] A 1M constant contact, a movable contact pivotally supported opposite to the fixed contact, and a member for biasing the movable contact to open.
a contact nonc that is connected to the movable contact by a first shaft and drives the movable contact to open and close; - a connecting link connected to the contact link by a second cage shaft parallel to the first axis; and one end of the grunge that reciprocates substantially parallel to the rotating direction of the movable contact; a bistable electromagnet connected to the connecting link by a third axis parallel to the axis; and a bistable electromagnet connected to the connecting link to connect the second axis to the first axis and the second axis. a link that moves the link so as to approach a plane containing the same; a latch link that launches the latch link into a predetermined vertical position; and a detection means that pulls off the latch link; A remote control type circuit breaker, which is completely equipped with a handle that rotates in the same direction as the granger and has its tip engaged with the connecting link.