KR20170114589A - Solenoid apparatus - Google Patents

Abstract

The present invention relates to a solenoid device for facilitating manual operation by imparting differentiability to a one-way holding force of a bi-directional holding force. The solenoid device includes a housing space formed inside the housing space, And a second portion having a shape that surrounds the second accommodating portion such that a second accommodating portion is formed at the other end of the accommodating space; A movable body installed in the accommodating space so as to be movable in a first direction and a second direction; A first coil installed in the first accommodating portion and excited to move the movable member in the first direction when a current is applied; And a second coil provided in the second accommodating portion and excited to move the movable member in the second direction when a current is applied, The second portion may be partially or wholly removed so that the magnetic characteristics of the two portions are different from each other.

Description

[0001] The present invention relates to a solenoid apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solenoid apparatus, and more particularly, to a solenoid apparatus for imparting differentiability to a one-way holding force of a bi-directional holding force to facilitate manual operation.

Actuators applied to all circuit breakers and reclosers have to operate within a certain cut-off time (usually within 50 ms), and the pushing force and gas repulsive force also act as a very large force. Therefore, an actuator that is applied to a transmission / distribution class circuit breaker must be able to operate with high power and high speed. Actuators applied to breakers and reclosers have used actuators that mainly use mechanical mechanisms such as hydraulic, pneumatic, and spring. Recently, actuators using electromagnets such as motor springs and permanent magnet type actuators have been developed and applied.

 Since the actuator using the conventional mechanical mechanism is composed of many parts, it is easy to cause a malfunction even if only one component fails, and there is a risk that more than 50% of breaker breakdown occurs in the actuator due to oil leakage and malfunction thereof there was.

The permanent magnet type manipulator has a very simple structure as an operation device that has been actively undergoing a lot of research in recent years, so that it has a small size, a low risk of malfunction due to loss of parts, excellent durability, .

In addition, since the operation is performed by controlling the current flowing through the coil, the operation is convenient and the performance is excellent, and thus it is evaluated as an ideal actuator suitable for a circuit breaker and a recloser.

Such a permanent magnet type operation device is a system in which the movable element is operated by the magnetic field of the permanent magnet and the magnetomotive force excited by the coil. This is because the magnetic contact by the permanent magnet can continuously maintain the state of opening and closing the contact portion by itself , There is no need for a mechanical mechanism which was conventionally necessary for fixing the mover in the open and closed state of the contact portion.

However, in the conventional permanent magnet type operation device, a very large force is required due to the holding force of the open side by the permanent magnet in the manual input operation in the open state, so that it is difficult to work after the installation by the working line.

Further, in the conventional permanent magnet type actuator, it is difficult to miniaturize the device due to the length of the core and the size of the coil, and it is difficult to assemble the device, which makes maintenance difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to cut a part or all of the open side core to minimize the opening retention force by the permanent magnet upon completion of the opening, The solenoid device according to the present invention is a solenoid device that can improve the propulsive force for moving the body quickly and reduce the overall size of the actuator by making it possible to downsize the coil. However, these problems are exemplary and do not limit the scope of the present invention.

In order to solve the above-mentioned problem, a solenoid device according to the present invention includes a first portion having a receiving space formed therein and surrounding the first receiving portion such that a first receiving portion is formed at one end of the receiving space, A second portion having a shape that surrounds the second accommodating portion such that a second accommodating portion is formed at the other end of the accommodating space; A movable body installed in the accommodating space so as to be movable in a first direction and a second direction; A first coil installed in the first accommodating portion and excited to move the movable member in the first direction when a current is applied; And a second coil provided in the second accommodating portion and excited to move the movable member in the second direction when a current is applied, The second portion may be partially or wholly removed so that the magnetic characteristics of the two portions are different from each other.

According to the present invention, in the core, a permanent magnet accommodating portion is formed between the first accommodating portion and the second accommodating portion, and a permanent magnet may be provided in the permanent magnet accommodating portion.

According to the present invention, the core further comprises: an uppermost core plate having a first length so as to be in a form of enclosing both the first coil and the second coil; At least one intermediate layer core plate having a second length that is shorter than the first length so as to be in the form of only surrounding the first coil; And a lowermost core plate having the first length so as to be in the form of enclosing both the first coil and the second coil.

Further, according to the present invention, the middle layer core plate may be shaped to surround a part of the first coil and the permanent magnet.

According to the present invention, the uppermost-layer core plate, the middle-layer core plate, and the lowermost-core plate sandwich one of the corner portions of the uppermost-core plate and the lowermost-core plate, And a second screw penetrating through the intermediate portion between the uppermost core plate and the lowermost core plate and penetrating the other corner portion of the intermediate layer core plate.

According to the present invention, the core is provided between the uppermost core plate and the middle-layer core plate or between the middle-layer core plate and the lowermost core plate, and surrounds the first coil and the second coil. And at least one intermediate-layer expanding core plate having the second length to allow the first and second intermediate-

According to the present invention, the movable body is connected to the electric power breaker, the first coil is a closing coil for generating the input of the breaker, and the second coil generates the opening force of the breaker And the core may be in a form in which part or all of the second portion corresponding to the second coil is removed so as to weaken the holding force of the circuit breaker.

Further, according to the present invention, a movable plunger is connected to the plunger, and the plunger can be urged in the opening direction by the opening spring.

According to the present invention, a stopper for slidingly supporting the movable body may be installed at both ends of the core so that the movable body can be moved only in the accommodating space.

Also, according to the present invention, the distance between the second coil and the core may be larger than the distance between the first coil and the core.

Further, according to the present invention, the volume of the second coil may be smaller than the volume of the first coil.

According to some embodiments of the present invention as described above, a part or the whole of the open-side core is cut to minimize the opening retention force by the permanent magnet when the opening is completed, the driving force for moving the movable body rapidly is improved , It is possible to downsize the coil, thereby reducing the overall size of the manipulator compactly, thereby improving the productivity of the product and reducing the unit cost of the product. Of course, the scope of the present invention is not limited by these effects.

1 is a front perspective view illustrating a solenoid device in accordance with some embodiments of the present invention.
Fig. 2 is a rear perspective view of the solenoid device of Fig. 1; Fig.
3 is a side view of the solenoid device of FIG.
4 is a sectional view showing a closed state of the solenoid device of Fig.
Fig. 5 is a sectional view showing the solenoid device of Fig. 1 in an open state. Fig.
Figure 6 is a side view of a solenoid device in accordance with some alternative embodiments of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention are described in order to more fully explain the present invention to those skilled in the art, and the following embodiments may be modified into various other forms, It is not limited to the embodiment. Rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the invention to those skilled in the art. In the drawings, the thickness and size of each layer are exaggerated for convenience and clarity of explanation.

It is to be understood that throughout the specification, when an element such as a film, region or substrate is referred to as being "on", "connected to", "laminated" or "coupled to" another element, It will be appreciated that elements may be directly "on", "connected", "laminated" or "coupled" to another element, or there may be other elements intervening therebetween. On the other hand, when one element is referred to as being "directly on", "directly connected", or "directly coupled" to another element, it is interpreted that there are no other components intervening therebetween do. Like numbers refer to like elements. As used herein, the term "and / or" includes any and all combinations of one or more of the listed items.

Although the terms first, second, etc. are used herein to describe various elements, components, regions, layers and / or portions, these members, components, regions, layers and / It is obvious that no. These terms are only used to distinguish one member, component, region, layer or section from another region, layer or section. Thus, a first member, component, region, layer or section described below may refer to a second member, component, region, layer or section without departing from the teachings of the present invention.

Also, relative terms such as "top" or "above" and "under" or "below" can be used herein to describe the relationship of certain elements to other elements as illustrated in the Figures. Relative terms are intended to include different orientations of the device in addition to those depicted in the Figures. For example, if the element is inverted in the figures, the elements depicted as being on the upper surface of the other elements will have a direction on the lower surface of the other elements. Thus, the example "top" may include both "under" and "top" directions depending on the particular orientation of the figure. If the elements are oriented in different directions (rotated 90 degrees with respect to the other direction), the relative descriptions used herein can be interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a," "an," and "the" include singular forms unless the context clearly dictates otherwise. Also, " comprise "and / or" comprising "when used herein should be interpreted as specifying the presence of stated shapes, numbers, steps, operations, elements, elements, and / And does not preclude the presence or addition of one or more other features, integers, operations, elements, elements, and / or groups.

Hereinafter, embodiments of the present invention will be described with reference to the drawings schematically showing ideal embodiments of the present invention. In the figures, for example, variations in the shape shown may be expected, depending on manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention should not be construed as limited to the particular shapes of the regions shown herein, but should include, for example, changes in shape resulting from manufacturing.

1 is a front perspective view showing a solenoid device 100 according to some embodiments of the present invention, FIG. 2 is a rear perspective view of the solenoid device 100 of FIG. 1, and FIG. 3 is a perspective view of a solenoid device 100 of FIG. And Fig. 4 is a sectional view showing the solenoid device 100 of Fig. 1 in a closed state.

1 to 4, a solenoid apparatus 100 according to some embodiments of the present invention mainly includes a core 10, a movable body 20, a first coil C1, And a second coil C2.

For example, as shown in FIGS. 1 to 4, the core 10 is made of a magnetic material that can be magnetized by a permanent magnet, and a plurality of thin rectangular panels are stacked. A first portion P1 which has a shape that surrounds the first accommodating portion A1 so that the first accommodating portion A1 is formed at one end of the accommodating space A, And a second portion P2 having a shape surrounding the second accommodating portion A2 so that the second accommodating portion A2 is formed at the other end of the second accommodating portion A2.

More specifically, for example, in the core 10, a permanent magnet accommodation portion A3 is formed between the first accommodation portion A1 and the second accommodation portion A2, and the permanent magnet accommodation portion A3, the permanent magnets 30 may be installed.

The core 10 is magnetized by the permanent magnet 30 so that even when no current is applied to the first coil C1 and the second coil C2, A holding force for maintaining the closed state or the open state can be generated.

4, the movable body 20 is provided in the accommodation space A and can be moved in a first direction (closing direction) and a second direction (opening direction) And may be a structure made of a magnetic material that can be magnetized by a permanent magnet and movable by a magnetic force.

Therefore, even if no current is applied to the first coil C1 and the second coil C2, when the core 10 is magnetized by the permanent magnet 30, A retaining force for holding the closed state or the open state by acting on the body 20 can be generated.

1 to 4, the first coil C1 is installed in the first accommodating part A1, and when the electric current is applied, And can be excited to be moved in the first direction.

1 to 4, the second coil C2 is provided in the second accommodating portion A2, and when the electric current is applied, And can be excited to be moved in the second direction.

Therefore, when the first coil C1 is excited, the movable body 20 is moved in the first direction. When the second coil C2 is excited, the movable body 20 moves in the second direction .

1 to 4, the core 10 may be formed so that the magnetic characteristics of the first portion P1 and the second portion P2 are different from each other, Some or all of which may be removed.

More specifically, for example, as shown in Fig. 3, the core 10 may have a first length L1 (L1) so as to be in the form of enclosing both the first coil C1 and the second coil C2 And at least one intermediate layer core plate (12) having a second length (L2) shorter than the first length (L1) so as to be in the form of only surrounding the first coil (C1) ) And a lowermost core plate (13) having the first length (L1) so as to be able to surround both the first coil (C1) and the second coil (C2). However, the core 10 is not necessarily limited to the uppermost core plate 11, the middle-layer core plate 12, and the lowermost core plate 13, Any one of the lowermost core plates 13 may be omitted.

Further, for example, the middle layer core plate 12 may have a shape that surrounds the first coil C1 and a part of the permanent magnet 30.

1, the uppermost core plate 11, the intermediate-layer core plate 12, and the lowermost-core plate 13 are bonded to the uppermost core plate 11 and the lowermost core plate 13, (1) passing through one side edge portion of the middle layer core plate (10) and passing through an intermediate portion between the uppermost core plate (11) and the lowermost core plate (13) , And a second screw (2) passing through the other corner of the intermediate layer core plate (12). However, without being limited thereto, it is also possible to fix the first screw 1 and the second screw 2 together with various fasteners such as various screws, bolts, strings, adhesives or rivets.

1 to 4, the movable member 20 is connected to a power interrupter and is connected to a plunger 21, and the plunger 21 is connected to an open spring (not shown) In the open-side direction.

Here, the first coil C1 is a closing coil for generating input and output of the circuit breaker, and the second coil C2 is an open coil for generating an opening force of the circuit breaker. have.

Therefore, as described above, the core 10 may be partially or completely removed from the second portion P2 corresponding to the second coil C2 so as to weaken the holding force of the circuit breaker The open holding force can be weakened to about 10 percent of the holding holding force. In addition, such an open holding force can be supplemented by the above-described elastic spring.

1 to 4, the movable body 20 is slidably supported at both ends of the core 10 so that the movable body 20 can be moved only in the accommodation space A, A stopper 22 may be provided.

Therefore, both ends of the movable body 20 can be rotatably supported by the stopper 22, and the movable body 20 can be moved forward and backward only in the accommodating space A.

4, the distance between the first coil C1 and the core 10 is smaller than the distance D1 between the second coil C2 and the core 10 in order to weaken the opening retentive force, A larger distance D2 can be formed.

Therefore, the closing retention force in the vicinity of the first coil C1 with the small separation distance D1 can be maintained as it is because the magnitude of the magnetic force acting at a short distance is large, and the second coil The opening retention force in the vicinity of the point C2 can be weakened because the intensity of the magnetic force acting at a long distance is small.

Likewise, the volume of the second coil C2 may be smaller than the volume of the first coil C1. Therefore, the open holding force of the second coil C2 having a small volume can be relatively weakened.

FIG. 4 is a sectional view showing a closed state of the solenoid device 100 of FIG. 1, and FIG. 5 is a sectional view showing an opened state of the solenoid device 100 of FIG.

4 and 5, the operation of the solenoid apparatus 100 according to some embodiments of the present invention will be described. First, as shown in FIG. 4, the first coil C1 When the electric current is applied, the movable body 10 can be moved in the first direction, that is, the closing direction, by the electromagnetic field generated when the first coil C1 is excited.

At this time, even if no current is applied to the first coil (C1), the first portion (P1) of the core (10) magnetized by the permanent magnet (30) becomes magnetized, .

5, when an electric current is applied to the second coil C2, the movable body 10 is moved in the second direction, that is, in the second direction, that is, It can be moved in the opening direction.

At this time, when no current is applied to the second coil C2, the volume of the second portion P2 of the core 10 magnetized by the permanent magnet 30 is very small, Can be weakened. Therefore, the user can facilitate the manual operation in the closing direction as necessary.

Therefore, a part or the entirety of the second portion (P2) on the opening side of the core (10) can be cut to minimize the opening retention force by the permanent magnet (30) It is possible to reduce the size of the second coil C2 so that the overall size of the operation device can be compactly reduced, thereby improving the productivity of the product, .

Figure 6 is a side view of a solenoid device 200 in accordance with some other embodiments of the present invention.

6, the core 10 of the solenoid device 200 according to some other embodiments of the present invention may be provided between the uppermost core plate 11 and the middle layer core plate 12, And a second coil L2 that is larger than the second length L2 and is disposed between the plate 12 and the lowermost core plate 13 so as to be in the form of surrounding the first coil C1 and the second coil C2, And at least one intermediate layer expanding core plate 14 having a third length L3 that is equal to or less than one length L1.

Accordingly, by adjusting the number and size of the middle-layer core plate 12 and the middle-layer expanding core plate 14, the opening retention force can be optimized and adjusted more precisely.

While the present invention has been described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10: Core
11: Top layer core plate
12: Middle layer core plate
13: Lowermost core plate
14: Middle layer expansion core plate
20:
21: Plunger
22: Stopper
30: permanent magnet
100: Solenoid device

Claims (11)

And a second accommodating portion formed on the other end of the accommodating space and having a first portion having a shape that surrounds the first accommodating portion such that a first accommodating portion is formed at one end of the accommodating space, A core comprising a second portion in a shape surrounding the receptacle;
A movable body installed in the accommodating space so as to be movable in a first direction and a second direction;
A first coil installed in the first accommodating portion and excited to move the movable member in the first direction when a current is applied; And
And a second coil installed in the second accommodating portion and excited to move the movable member in the second direction when a current is applied,
The core comprises:
Wherein a part or all of the second part is removed so that the magnetic characteristics of the first part and the second part are different. The method according to claim 1,
Wherein the core has a permanent magnet accommodating portion formed between the first accommodating portion and the second accommodating portion, and a permanent magnet is provided in the permanent magnet accommodating portion. 3. The method of claim 2,
The core comprises:
An uppermost-layer core plate having a first length so as to be in the form of enclosing both the first coil and the second coil;
At least one intermediate layer core plate having a second length that is shorter than the first length so as to be in the form of only surrounding the first coil; And
A lowermost core plate having the first length so as to be in a form to enclose both the first coil and the second coil;
/ RTI > The method of claim 3,
And the middle layer core plate has a shape that surrounds a portion of the first coil and the permanent magnet. The method of claim 3,
The uppermost core plate, the intermediate-layer core plate, and the lowermost-
A first screw passing through one of the uppermost core plate and one of the lowermost core plates and passing through one side edge portion of the middle plate and a middle portion between the uppermost core plate and the lowermost core plate, And screw-assembled by a second screw passing through the other corner of the core plate. The method of claim 3,
The core comprises:
And at least one or more than one of the first and second coil plates having the second length so as to be between the uppermost core plate and the middle layer core plate or between the middle layer core plate and the lowermost core plate and surrounding the first coil and the second coil Middle layer expansion core plate;
Further comprising a solenoid device. The method according to claim 1,
The movable body is connected to the electric circuit breaker,
Wherein the first coil is a closing coil for generating an input of the breaker,
The second coil is an open coil for generating an opening force of the breaker,
The core comprises:
Wherein a part or all of the second part corresponding to the second coil is removed so as to weaken an opening holding force of the circuit breaker. 8. The method of claim 7,
Wherein the movable body is connected with a plunger, and the plunger is urged in the open side direction by an opening spring. The method according to claim 1,
Wherein a stopper for slidingly supporting the movable body is provided at both ends of the core so that the movable body can be moved only in the accommodating space. The method according to claim 1,
Wherein the distance between the second coil and the core is greater than the distance between the first coil and the core. The method according to claim 1,
And the volume of the second coil is smaller than the volume of the first coil.

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