KR101116378B1

KR101116378B1 - Electromagnetic switching device

Info

Publication number: KR101116378B1
Application number: KR1020100100795A
Authority: KR
Inventors: 최연순
Original assignee: 엘에스산전 주식회사
Priority date: 2010-10-15
Filing date: 2010-10-15
Publication date: 2012-03-09

Abstract

PURPOSE: An electromagnetic switching device is provided to increase the convenience of using by making an electronics opening/closing device small using a fixed core and movable core. CONSTITUTION: A movable core(123) is spirally slid in toward a fixed core. The fixed core is spaced from the moving core and moves the moving core. A fixed contact is electrically connected to an external device to be switched. A moving contact(112) is contacted to the fixed contact and is separated when the movable core is moved. A shaft(125) is moved up and down when the movable core is moving.

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 switchgear. 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 driving unit 120 includes an excitation coil 121, a fixed core 122, and a movable core 123. The excitation coil 121 generates a magnetic force by an electrical signal. The fixed core 122 is fixedly disposed inside the excitation 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 excitation coil 121 passes. The movable core 123 has a driving force that moves in the vertical direction by the magnetic flux generated by the excitation coil 121.

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

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.

Electronic switching device according to one aspect is a movable core, a fixed core that is spaced apart from the movable core to be spaced apart and moving the movable core, a fixed contact electrically connected to the external device to be opened and closed, and a movable contact that is in contact with or separated from the fixed contact when moving the movable core It includes.

At this time, the movable core slides diagonally toward the fixed core. The movable core and the fixed core are in the form of electromagnets, and magnetic force is generated between the movable core and the fixed core while current flows through the coil wound around the electromagnet.

One end of the movable contact is connected to the shaft, and the shaft may move up and down when the movable core is moved so that the movable contact may be contacted or separated from the fixed contact. The movable core is preferably moved by an interval such that the movable contact is in contact with and open with the fixed contact.

According to one embodiment, by miniaturizing the electronic switchgear, it is possible to increase the ease of use by reducing the space occupied by moving objects such as automobiles.

1 is a view showing a general electronic switchgear,
2A to 2D are views illustrating a driving unit of the electronic switching device according to various embodiments of the present disclosure.

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.

2A to 2D are views illustrating a driving unit of the electronic switching device according to various embodiments of the present disclosure. In this case, reference numerals shown in FIG. 1 are used as they are. Since the structure of the extinguishing part 110 of the present invention is the same as that shown in FIG.

2A to 2D, in the present invention, a moving core 123 and a fixed core 122 are offset and spaced apart from each other. The movable core 123 and the fixed core 122 are implemented as actuators in the form of electromagnets rather than solenoids. That is, the movable core 123 and the fixed core 122 are magnets in which a coil 130 is spirally wound around a ferromagnetic iron core, and magnetic force is generated only while current flows in the coil 130.

The movable core 123 slides in the diagonal direction toward the fixed core 122 by the magnetic force generated by the coils 130 winding the cores 122 and 123. At this time, the movable core 123 preferably slides by an interval such that the movable contact 112 is in contact with and separated from the fixed contact 111.

Specifically, referring to FIG. 2A, when power is applied to the coil 130, magnetic force is generated between the cores 122 and 123. Then, the movable core 123 in the form of an electromagnet slides upward in a diagonal direction toward the fixed core 122. Subsequently, the shaft 125 connected to the movable contact 112 is moved upward by the movable core 123 so that the movable contact 112 contacts the fixed contact 111. Accordingly, the fixed contact 111 switches the externally connected external devices.

On the contrary, when the application of power to the coil 130 is stopped, the magnetic force formed between the cores 122 and 123 disappears. Then, the movable core 123 slides downward in a diagonal direction toward the fixed core 122. Subsequently, the shaft 125 connected to the movable contact 112 moves downward by the movable core 123, so that the movable contact 112 is separated from the fixed contact 111.

FIG. 2B illustrates an electronic switchgear when the movable core 123 is located on the right side of the fixed core 122, and the operation form thereof is the same as that described with reference to FIG. 2A.

FIG. 2C is a view illustrating an electronic switch that operates opposite to the electronic switch illustrated in FIG. 2A. That is, when power is applied to the coil 130, the movable core 123 having an electromagnet shape slides downward in a diagonal direction toward the fixed core 122. Then, the shaft 125 connected with the movable contact 112 moves downward by the movable core 123, so that the movable contact 112 is separated from the fixed contact 111.

On the contrary, when power is applied to the coil 130, the movable core 123 slides upward in a diagonal direction toward the fixed core 122. Then, the shaft 125 connected with the movable contact 112 moves upward by the movable core 123 so that the movable contact 112 and the fixed contact 111 come into contact with each other.

FIG. 2D illustrates an electronic switchgear when the movable core 123 is located on the right side of the fixed core 122, and the operation form is the same as that described with reference to FIG. 2C.

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: drive unit 121: excitation coil
122: fixed core 123: movable core
124: through hole 125: shaft
126: return spring 130: coil

Claims

Movable core;
A fixed core disposed to be spaced apart from each other in a horizontal direction shifted from the movable core and moving the movable core;
A fixed contact electrically connected to an external device to be opened or closed; And
And an movable contact that is in contact with or separated from the fixed contact when the movable core moves.

The method of claim 1,
And the movable core slides diagonally toward the fixed core.

The method of claim 1,
The movable core and the fixed core is an electromagnet,
And a magnetic force generated between the movable core and the fixed core while a current flows in the coil wound around the iron core of the electromagnet.

The method of claim 1,
One end of the movable contact is connected to the shaft,
And the shaft moves up and down when the movable core moves to allow the movable contact to contact or separate from the fixed contact.

The method of claim 1,
And the movable core is moved by an interval such that the movable contact is in contact with and separated from the fixed contact.