KR101968229B1 - Disconnecting/connecting switch of load breaker - Google Patents

Abstract

The present invention relates to a load switch. According to the present invention, a fixed contact (54) of a stator (50) and a movable contact (64) of a mover (60) are in contact with each other and are separated from each other so as to open and close a line, thereby minimizing a space necessary for a moving stroke of the movable contact (64) by varying a length of the movable contact (64). Since the movable contact (64) is composed of a plurality of overlapped bodies (65), the length is varied by an operation of stretching and overlapping the overlapped bodies (65). Therefore, a size in a lengthwise direction of the mover (60) can be minimized in the load switch.

Description

Disconnecting / connecting switch of load breaker

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load opening and closing apparatus, and more particularly, to a load opening and closing apparatus that cuts off a circuit on a line when necessary.

Fig. 1 shows a configuration of a disconnecting switch, which is one of conventional load switching devices. According to this, a typical disconnecting device comprises a fixed stator 20 and a movable element 10 connected to the stator 20 while being operated by an operation device (not shown).

A plurality of segments 21 are provided along the inner circumferential surface of the stator 20 so as to be elastically pushed or opened by the springs 22 and the outer ends of the segments 21 A stationary contactor 23 is protruded from an inner central portion of the stator 20. The stationary contactor 23 is formed of an arc metal.

The mover 10 is also provided with a plurality of segments 11 along the inner circumferential surface thereof so as to be elastically pushed or opened by the springs 12, A movable contact 13 is provided to move backward and a main contact 15 is formed in front of the movable contact 13 with a recess 14 for receiving the fixed contact 23. At this time, a mover auxiliary contact (not shown) made of arc metal is formed on the peripheral surface of the main contact 15 for electrical contact with the stator auxiliary contact.

The conventional disconnecting device constructed as described above is configured such that the movable contact 13 of the movable element 10 is moved forward while the main contact 15 is connected to the stationary contactor 23 of the stator 20, The movable contactor 13 of the mover 10 is moved in a direction away from the stator 20 and the main contact 15 is moved away from the fixed contactor 23 An arc is generated by the charging and exciting currents flowing between the two instantaneously, and the opening operation is completed as the inter-pole distance is ensured by the continuous movement of the movable contactor 13, and is extinguished.

However, the above-described conventional techniques have the following problems. In the conventional disconnecting device, the longitudinal size of the entire disconnecting switch is determined according to the length and the stroke distance of the movable contact 13. Therefore, there is a problem that the size in the longitudinal direction of the disconnecting unit can not be further reduced.

Korean Patent No. 10-1053384 Korean Patent No. 10-1545202 United States Patent No. 7994442 Korean Patent No. 10-0929534

SUMMARY OF THE INVENTION An object of the present invention is to solve the conventional problems as described above, and to minimize the size of the load opening / closing device in the longitudinal direction by expanding and contracting the length of the movable contact in the load opening and closing apparatus.

According to an aspect of the present invention for achieving the above object, the present invention provides a stator comprising: a stator having a fixed contact; a movable contact, which is composed of a plurality of overlaps and is brought into contact with or separated from the stationary contactor by overlapping and overlapping, A drive member including a chain that is circularly wound around and extends around a drive shaft of the drive source so as to unfold and superpose the superposed body of the movable contact by a drive force of a drive source; Wherein the driving member and the drive source are connected by a driving link and the driving member is connected by an arm type connecting member.

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According to another aspect of the present invention, there is provided a stator comprising: a stator having a stationary contactor; a mover including a plurality of overlaps and having a movable contact that contacts or separates from the stationary contactor when the stack is unfolded and overlapped; And a member guide which guides the winding and unfolding of the driving member, wherein the driving member comprises a driving member which is driven by a driving force of the driving member, and which comprises a flexible rack gear which is wound and unfolded so as to unfold and overlap the movable contact, The rack gear is circularly wound around the drive shaft of the drive source and unwound to the spur gear rotated by the drive source.

A plurality of the overlaps are made different in diameter in order to be unfolded and overlapped.

And a first stopper and a second stopper are provided on the inner surface front end and the rear end surface of the other superimposed body except for the superimposed body having the smallest diameter to selectively contact the engaging rib.

In the load opening / closing apparatus according to the present invention as described above, the following effects can be obtained.

First, in the present invention, since the movable contact is made of a plurality of overlaps and the length is expanded and contracted, the structure for supporting the movable contact should be about the length of one superimposed body and the space required for moving the movable contact is also reduced. Therefore, the size of the mover in the longitudinal direction can be minimized, and the length of the entire opening and closing apparatus can be reduced.

According to the present invention, when the movable contact is operated to open the circuit, not only the entire movable contacts are simultaneously operated but also a plurality of the overlaps are sequentially moved, thereby reducing the driving force for driving the movable contact.

1 is a cross-sectional view showing the configuration of a disconnecting switch, which is one of load switching devices according to the related art.
2 is a sectional view showing a preferred embodiment of the load opening / closing apparatus according to the present invention.
3 is a cross-sectional view showing a state where the movable contact and the fixed contact are in contact with each other in the load opening and closing apparatus of the embodiment of the present invention.
4 is a cross-sectional view showing a state in which the movable contacts are separated from the fixed contacts and completely overlapped in the load opening and closing apparatus of the embodiment of the present invention.
5 is a sectional view showing another embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the understanding why the present invention is not intended to be interpreted.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected," "coupled," or "connected. &Quot;

The load opening and closing apparatus of the present invention includes a stator 50 and a mover 60 and the stator housing 52 forms an outer appearance and a skeleton of the stator 50. As shown in Fig. Inside the stator housing 52 is a stationary contact 54. The fixed contact 54 is a portion electrically connected to a circuit on a line.

The mover housing (62) forms an outer appearance of the mover (60). There is a movable contact 64 to be moved in and out of the mover housing 62. The movable contact 64 is electrically connected to and separated from the fixed contact 54. The movable contact 64 is composed of a plurality of overlaps 65. The outer diameter of the superimposed body 65 is the same as the inner diameter of the next one, and the outer diameter gradually increases toward the outer side.

Then, the superimposed body 65 is unfolded in turn so that the innermost one is the most forward. For reference, the state of FIG. 2 shows during the operation process. Fig. 3 shows the state in which the movable contact 64 is extended most long, and Fig. 4 shows the state in which the movable contact 64 is overlapped the shortest. These overlapping elements 65 are engaged, for example, just before the innermost part completely escapes to the outside of the next, and in this way, the overlapping bodies 65 are operated in turn and are extended the longest. For this purpose, a latching rib 651 protruding from the outer surface of the rear end of the overlaps 65 protrudes. A first stopper 653 is formed to protrude from the inner surface and a second stopper 655 is formed to protrude from the inner surface of the outer surface except for the overlapped body 65 at the forefront. The first stopper 653 and the second stopper 655 selectively extend the engagement ribs 651. The engaging rib 651 is engaged with the first stopper 653 when the movable contact 64 is extended and the engaging rib 651 is engaged with the second stopper 655 when the movable contact 64 ) Is folded. On the other hand, the rearmost nipple 65 is made longer than the other, so that the entire movable contact 64 can be stably supported on the mover housing 62.

The driving source 66 provides a driving force for the operation of the movable contact 64. The driving source 66 may be an electric motor, a hydraulic motor, or the like. The driving force of the driving source 66 is transmitted to the driving link 67 connected to the driving shaft of the driving source 66 at one end.

A driving member 68 is connected to the driving link 67. As the driving member 68, a chain is used in this embodiment. The driving member 68 is connected to the overlapping member 65 at the distal end of the movable contact 64. The driving member 68 may be directly connected to the overlapping member 65 at the foremost end, but may be connected by a separate connecting member 69. The connecting member 69 is a rigid bar.

There is a member guide 70 for guiding the chain which is the driving member 68. In this embodiment, only the member guide 70 guiding at the position where the chain is wound is shown. However, the member guide 70 may be guided even when the movable contact 64 is unfolded. Of course, the member guide 70 may not be used in the section where the connecting member 69 exists.

On the other hand, Fig. 5 shows another embodiment of the present invention. Here, for convenience of description, the same reference numerals as in the embodiment shown in Fig. 2 are assigned to 100 units, and only the necessary portions will be described.

Here, the overlapped body 165 of the movable contactor 164 installed in the mover housing 162 of the mover 160 is contrary to the above embodiment. In other words, the diameter of the superimposed body 165 protruding to the forefront is larger than the diameter of the superimposed body 165, which is located at the rear end.

A chain which is a driving member 168 is connected by a connecting member 169 to an overlapping body 165 protruding most to the tip end of the driving chain 166. The chain is connected to a driving link 167 rotated by the driving force of the driving source 166 And is wound and unfolded by the driving force of the driving source 166.

And, although not shown in the drawing, a flexible rack gear can be used as the driving member 68, 168 instead of a chain. The rack gear is formed with gear teeth on a plane, generally made of metal. However, the rack gear used in this embodiment can be made of a flexible material and wound. A spur gear is used to wind and unwind the rack gear. The spur gear may be installed at the position of the driving source (66, 166) and rotated by a driving source (66, 166). When the rack gear is wound on the spur gear, the movable contacts 64 and 164 are shortened. When the rack gear is unwound, the movable contacts 64 and 164 are extended long.

Hereinafter, the use of the load opening / closing apparatus according to the present invention having the above-described configuration will be described in detail.

For convenience of explanation, the operation will be described based on the embodiment shown in FIG. 2 to FIG. 3, a circuit of a line is connected by a load opening / closing device. Here, the length of the movable contact 64 is maximized, and the movable contact 64 and the fixed contact 54 are in contact with each other, so that the circuit of the line is connected.

When the circuit needs to be opened in this state, the driving source 66 is operated. When the driving link 67 is rotated by the operation of the driving source 66 and the driving link 67 is rotated counterclockwise with reference to FIG. 3, the driving member 68 is moved to the driving link 67 So that it is wound. In particular, the driving member 68 is guided by the member guide 70 and wound into a state as shown in Fig.

When the overlapping member 65 at the extreme end of the movable contactor 64 is pulled and the overlapping members 65 are sequentially stacked while the drive member 68 is wound, the length of the movable contactor 64 . As such, when the movable contact 64 is separated from the fixed contact 54, the circuit is opened.

While the present invention has been described in connection with what is presently considered to be the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: mover 11: segment
12: spring 13: movable contact
14: Needle 15: Main contact
20: stator 21: segment
22: spring 23: fixed contact
50: stator 52: stator housing
54: fixed contacts 60: mover
62: mover housing 64: movable contact
66: driving source 67: driving link
68: driving member 70: member guide
160: Mover 162: Mover housing
164: movable contactor 166:
167: drive link 168: drive member
170: member guide 651:
653: first stopper 655: second stopper

Claims (7)

A stator having a fixed contact,
A mover comprising a plurality of overlaps and having a movable contact which is brought into contact with or separated from the stationary contactor by being spread and overlapped,
A driving member including a chain which is operated by a driving force of a driving source and is wound and rounded around a driving shaft of the driving source so as to unfold and overlap the movable contact,
And a member guide for guiding the winding and unfolding of the driving member,
Wherein the chain, which is the driving member, and the driving source are connected by a drive link, and the overlap member and the driving member are connected by an arm type connecting member.
delete delete delete A stator having a fixed contact,
A mover comprising a plurality of overlaps and having a movable contact which is brought into contact with or separated from the stationary contactor by being spread and overlapped,
A driving member including a flexible rack gear which is operated by a driving force of a driving source and is wound and unfolded so as to unfold and overlap the overlapped body of the movable contact;
And a member guide for guiding the winding and unfolding of the driving member,
Wherein the rack gear, which is the driving member, is wound around the driving shaft of the driving source in a circular shape and released to the spur gear rotated by the driving source.
The load opening / closing apparatus according to claim 1 or 5, wherein a plurality of the overlaps are made different in diameter in order, and can be unfolded and overlapped.
[7] The apparatus according to claim 6, wherein a first stopper and a second stopper are provided at an inner surface front end and a rear end surface of the other superimposed body except for the superimposed body having the smallest diameter, Is selectively brought into contact with the load.

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