KR20120039266A

KR20120039266A - Electromagnetic switching device

Info

Publication number: KR20120039266A
Application number: KR1020100100882A
Authority: KR
Inventors: 주현우
Original assignee: 엘에스산전 주식회사
Priority date: 2010-10-15
Filing date: 2010-10-15
Publication date: 2012-04-25
Also published as: KR101142200B1

Abstract

PURPOSE: An electronics opening/closing device is provided to miniaturize an overall structure by including a displacement driving part changing a horizontal motion of a moving core and a moving contact point into up and down motion of the moving contact point. CONSTITUTION: A driving part(220) of an electronics opening/closing device comprises a coil(221), a fixed core(222), a moving core(223), and a displacement driving part(230). The coil creates magnetic force according to an electric signal. The fixed core and the moving core form a magnetic path which pushes through magnetic flux created by the coil. The moving core has driving force exercising to right and left horizontal directions by the magnetic flux. The fixed core and the moving core are separately arranged. A shaft passes through the fixed core. The displacement driving part is composed of an elastic body having a constant volume and surrounds the moving core and the shaft.

Description

Electronic switching device {Electromagnetic switching device}

One aspect of the present invention relates to an electronic switchgear, and more particularly to a miniaturized electronic switchgear.

The electronic switchgear is a kind of electrical contact switch for supplying or stopping current, and can be used in various industrial equipment, machines, vehicles, and the like. The electronic switching device includes a fixed contact point and a movable contact point, and includes an electric actuator for driving the movable contact point to enable the open / close control of the fixed contact point by an electrical signal.

1 is a view illustrating a general electronic switching device 100. Referring to FIG. 1, the electronic opening and closing apparatus 100 may include a extinguishing unit 110 and a driving unit 120.

The extinguishing unit 110 includes a fixed contact 111 and a movable contact 112. External devices connected to the electronic switching device 100 are opened and closed according to the bonding or separation of the fixed contact 111 and the movable contact 112.

The driver 120 includes a coil 121, a fixed core 122, and a movable core 123. The coil 121 generates a magnetic force by an electrical signal. The fixed core 122 is fixedly disposed inside the coil 121, and the movable core 123 is disposed against the fixed core 122.

The fixed core 122 and the movable core 123 form a magnetic path through which magnetic flux density generated by the coil 121 passes. The movable core 123 has a driving force that moves in the vertical direction by the magnetic flux generated by the coil 121.

The joining force of the movable core 123 and the fixed core 122 is provided by the coil spring by the coil 121, and the spring force in the direction in which the movable core 123 returns to the initial position is the return spring 126. Provided by

The through hole 124 is positioned at the centers of the fixed core 122 and the movable core 123 through the arcing unit 110 and the driving unit 120 in the axial direction. The shaft 125 formed through the through hole 124 in the axial direction has a movable contact 112 at the upper end and a movable core 123 at the lower end thereof to move the vertical movement of the movable core 123 to the movable contact 112. To pass).

The movable contact 112 inside the housing 114 is coupled to the shaft 125 at the bottom of the fixed contact 111 and performs contact and separation with the fixed contact 111 for opening and closing. The contact spring 113 is positioned below the movable contact 112 to have an elastic force when the movable contact 112 is in contact with the fixed contact 111. The movable contact 112 may maintain a contact state with the fixed contact 111 at a predetermined pressure or more through the contact spring 113.

Miniaturization is required for the above-mentioned electronic switchgear to be used in a mobile body such as an automobile.

According to one aspect, a miniaturized electronic switchgear is proposed.

According to an embodiment of the present invention, an electronic switch including a fixed contact, a movable contact contacted to and separated from the fixed contact, and a driving unit for driving the movable contact to move up and down may include a driving part spaced apart from the fixed core and the fixed core so as to move the vertical contact. A movable core horizontally moving with the fixed core in the vertical direction, and a displacement drive unit connected to the movable contact and the movable core to convert the horizontal motion of the movable core into the vertical movement of the movable contact.

According to the present invention, miniaturization of the electronic switchgear can be achieved.

1 is a view showing a general electronic switchgear,
2 is a diagram illustrating an electronic switchgear according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described embodiments of the present invention; In the following description of the present invention, if it is determined that detailed descriptions of related well-known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to intention or custom of a user or an operator. Therefore, the definition should be made based on the contents throughout the specification.

2 is a view showing a driving unit 220 of the electronic switching device according to an embodiment of the present invention.

2, the driving unit 220 of the electronic switching device includes a coil 221, a fixed core 222, a movable core 223, and a displacement driver 230. Since the structure of the sign 110 is the same as that shown in FIG. 1, the same reference numerals are used.

The coil 221 generates a magnetic force by an electrical signal. The fixed core 222 and the movable core 223 form a magnetic path for passing the magnetic flux generated by the coil 221. At this time, the movable core 223 has a driving force to move in the left and right horizontal direction by the magnetic flux generated by the coil 221.

The fixed core 222 and the movable core 223 are spaced apart from each other. In detail, the fixed core 222 penetrates the shaft 225, and the movable core 223 is spaced apart from the fixed core 222 in a direction perpendicular to the shaft 225. In the present invention, the movable contact 112 and the shaft 225 are separated and used as separate elements, but the movable contact 112 is formed integrally with the shaft 225 and may be used as a meaning including the shaft 225. .

The displacement driver 230 is an elastic body having a constant volume in a form surrounding the movable core 223 and the shaft 225. A portion of the displacement driver 230 is connected to both side ends of the movable core 223, the upper end of the shaft 225 (the lower end of the movable contact 112), and the lower end of the shaft 225, respectively. The displacement driver 230 may be a variable elastic body. For example, it may be a rubber material.

Due to the above-described connection structure, the displacement driver 230 converts the horizontal motion of the movable core 223 into the vertical motion of the movable point 112. This is because when both sides of the displacement driver 230 are contracted, the upper end of the displacement driver 230 is relaxed. That is, when the movable core 223 moves horizontally in the direction of the fixed core 222 when the current is applied, the displacement driver 230 connected to both side ends of the movable core 113 contracts in the horizontal direction, and the lower side of the movable contact 112. The displacement driving unit 230 connected to the upper portion relaxes upward. At this time, the lower end of the shaft 225 is fixed, it is preferable that only the upper end of the shaft 225 to move up and down.

Hereinafter, the operation of the electronic switchgear using the driver 220 will be described.

First, a current is applied to the coil 221. Then, the movable core 223 horizontally moves toward the fixed core 222 through the electromagnetic force generated through the coil 221. When the movable core 223 moves, the displacement driving unit 230 connected to the left and right ends of the movable core 223 is also connected to the upper end of the shaft 225 to move the shaft 225 upward. Then, the movable contact 112 connected to the shaft 225 is moved upward. Subsequently, the movable contact 112 engages with the fixed point 111.

On the contrary, when the current is applied to the coil 221 is stopped, the movable core 223 is moved horizontally in the opposite direction to the fixed core 222 to return. At this time, since the displacement driving unit 230 connected to the left and right ends of the movable core 223 at the time of moving the movable core 223 is also connected to the upper end of the shaft 225, the shaft 225 is moved downward. Then, the movable contact 112 connected to the shaft 225 is moved downward. Subsequently, the movable contact 112 is separated from the fixed point 111.

The embodiments of the present invention have been described above. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

100: electronic switchgear 110: arc extinguishing
111: fixed contact point 112: movable contact point
113: pressure spring 114: housing
120, 220: drive unit 121, 221: coil
122, 222: fixed core 123, 223: movable core
124: through hole 125, 225 shaft
126: return spring 121, 221: coil
230: displacement drive unit

Claims

A fixed contact electrically connected to an external device to be opened or closed; A movable contact in contact with and separated from the fixed contact; And a driving unit positioned below the movable contact to drive the movable contact up and down. In the electronic switch comprising a,
The driving unit
A fixed core;
A movable core spaced apart from the fixed core and horizontally moving to the fixed core in a vertical direction of the vertical movement; And
A displacement drive unit connected to the movable contact and the movable core to convert horizontal movement of the movable core into vertical movement of the movable contact;
Electronic switchgear comprising a.

The method of claim 1,
The fixed core is through the shaft,
And the movable core is spaced apart from the fixed core in a vertical direction with respect to the shaft, and horizontally moves to the fixed core when a coil is applied.

The method of claim 2,
The displacement driving unit is connected to the upper and lower ends of the shaft and the left and right both ends of the movable core, the electronic opening and closing device characterized in that for moving the upper and lower ends of the shaft when the movable core is moved horizontally.

The method of claim 1,
And the displacement driving unit is a variable elastic body.