KR101116379B1

KR101116379B1 - Electronic switch

Info

Publication number: KR101116379B1
Application number: KR1020100100796A
Authority: KR
Inventors: 최연순
Original assignee: 엘에스산전 주식회사
Priority date: 2010-10-15
Filing date: 2010-10-15
Publication date: 2012-03-09

Abstract

The present invention relates to an electronic switch that is made of a material having a low resistance of the metal plate to reduce the resistance received by the circulating magnetic flux to improve the eddy current phenomenon, and the coil is excited or element depending on whether the control current is energized; A yoke provided around the coil to form a magnetic path around the coil, a metal plate forming a magnetic path around the coil together with the yoke, a fixing core fixed to the metal plate, and the coil excited And a return spring installed between the movable core and the fixed core, the return spring applying an elastic force to separate the movable core from the fixed core, and connected to the movable core. The shaft which is movable together and installed on the other end side of the shaft A movable contact fixedly movable opposite to the movable contact, a fixed contact configured to allow an electrical circuit to be closed or opened upon contact or separation with the movable contact, and the shaft below the movable contact The electronic switch comprising a contact spring installed around the contact spring to provide an elastic contact pressure to the movable contact to contact the fixed contact, the metal plate is made of stainless or pure iron material.

Description

Electronic switch

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic switch, and more particularly, to an electronic switch in which a metal plate is made of a material having a low resistance, thereby improving the eddy current phenomenon by reducing the resistance of the circulating magnetic flux.

In general, an electronic switch is located between a battery and a DC power converter of an electric vehicle such as a hybrid car, a fuel cell car, an electric golf cart, or an electric forklift truck, and supplies power from the battery to the power converter and generates power from the generator. Perform the function of feeding on.

A general electronic switch includes a coil that is excited or demagnetized according to whether a control current is supplied, a yoke installed around the coil in the lower frame so as to form a magnetic path around the coil, and the yoke is provided to face the yoke. And a metal plate forming a magnetic path around the coil, a fixed core fixedly installed on the metal plate, and the fixed core facing each other, and contacting the fixed core when the coil is excited. A movable core, which is movable when the element is separated from the fixed core, a shaft movable with the movable core having one end coupled to the movable core, and between the movable core and the fixed core, An elastic force is applied to separate from the fixed core, and this elastic force is applied to the contact pressure switch. Than the contact pressure of the ring has a structure containing a large return spring.

Currently, metal plate is usually made of stainless steel, and cylinders and cores are made of pure iron.

However, since stainless steel has higher resistance than pure iron, the circulating magnetic flux receives a greater resistance in relation to the eddy current in the metal plate portion, thereby degrading the performance of the actuator.

The present invention for solving the conventional problems as described above is located between the drive unit and the conducting unit, the cover and hermetically welded, and is used in the winding to change the current material of the metal plate that serves to support the shaft to another material It is an object of the present invention to provide an electronic opener that can prevent the occurrence of magnetic field distortion in the closed state of the electronic switch due to the leakage magnetic field.

The present invention for achieving the above object is a coil that is excited or demagnetized according to whether the control current is energized, a yoke installed around the coil to form a magnetic path around the coil, and the yoke around the coil together with the yoke A metal plate for forming a magnetic path in the metal plate, a fixed core fixed to the metal plate, a movable core in contact with the fixed core when the coil is excited, and provided between the movable core and the fixed core, A return spring for applying an elastic force to separate the movable core from the fixed core, a shaft connected to the movable core and movable together with the movable core, and movable on the other end side of the shaft and movable according to the movement of the shaft. A contact fixed to the movable contact with the movable contact and separated from the movable contact D) an electronic switch comprising a fixed contact for causing the electrical circuit to be closed or open, and a contact spring provided around the shaft below the movable contact and providing an elastic contact pressure to the movable contact to contact the fixed contact. The metal plate provides an electronic switch made of stainless or pure iron.

The present invention is located between the drive unit and the energizing unit, the cover is hermetically welded to the cover, and the current used material of the metal plate that serves to support the shaft by changing the other material to the leakage magnetic field generated in the winding in the closed state of the electronic switchgear There is an effect that can prevent the occurrence of magnetic field distortion.

1 is a cross-sectional view of the electronic switch according to the present invention,
2 is a cross-sectional view showing another embodiment of the electronic switch according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in more detail the configuration and operation of the electronic switch according to the present invention.

1 is a cross-sectional view of an electronic switch according to the present invention, Figure 2 is a cross-sectional view showing another embodiment of the electronic switch according to the present invention.

The electronic switch 10 of the present invention is a yoke (120) installed around the coil (110) to form a magnetic path around the coil 110 and the excitation or element according to whether or not the control current is energized. And a metal plate 130 forming a magnetic path around the coil 110 together with the yoke 120, a fixing core 140 fixed to the metal plate 130, and the coil 110. It is provided between the movable core 150 and the movable core 150 and the fixed core 140 to contact the fixed core 140 when it is excited, and the movable core 150 is fixed to the fixed core 140. Return spring 160 for applying an elastic force to be separated from), the shaft 170 is connected to the movable core 150 and movable together with the movable core 150, and installed on the other end side of the shaft 170 The movable contact 210 and the movable contact 2 that are movable in accordance with the movement of the shaft 170. 10 and a fixed contact 220 which is fixedly installed so as to close or open an electrical circuit by contacting or separating from the movable contact 210 and the shaft 170 below the movable contact 210. It is installed around the), including a contact spring 230 for providing an elastic force to the movable contact 210 to contact the fixed contact 220,

The metal plate 130 is made of stainless or pure iron material.

First, the basic structure of the electronic switch 10 will be described. Electronic switch 10 according to the present invention is configured to include the energizing unit 200 and the drive unit (100).

The energizing unit 200 includes a fixed contact 220 and a movable contact 210, and includes an opening and closing structure of the contact so that switching to an external device connected to the electronic switch 10 is performed.

The driving unit 100 serves to control the opening and closing of the contact using an electrical signal. The electronic switch 10 typically switches an external device connected to the electronic switch 10 by the vertical movement of the driving unit 100.

The driving unit 100 is disposed to face the fixed core 140 and the fixed core 140 fixedly disposed in the coil 110, the coil 110 generating a driving force of a contact by generating a magnetic force by an electrical signal. Has a movable core 150.

Between the coil 110, the fixed core 140, and the movable core 150, a coil bobbin 180 for which the coil 110 is recommended is provided, and a fixed core (up and down) along the axial direction of the coil bobbin 180 ( 140 and movable core 150 are disposed. The fixed core 140 and the movable core 150 form a magnetic path through which magnetic flux density generated by the coil 110 passes. The movable core 150 has a driving force to move up and down by the magnetic flux generated by the coil 110.

The core container is made of a nonmagnetic material between the coil bobbin 180, the fixed core 140 and the movable core 150, and is formed in a cylindrical shape in which a surface of the conducting portion 200 side is opened and the bottom of the other side is blocked. 190.

The core container 190 has a shape such as a container in which the fixed core 140 and the movable core 150 are accommodated, and the outer diameter of each of the fixed core 140 and the movable core 150 has an inner diameter within the core container 190. It is formed into a cylinder having the same diameter. The movable core 150 is movable in the axial direction of the core container 190.

The moving range of the movable core 150 is determined between the joining position to be bonded to the fixed core 140 and the bottom surface of the other side of the core container 190 and the initial position falling. Bonding force of the movable core 150 to the fixed core 140 is provided by the coil spring by the coil 110, the force that the movable core 150 is returned to the initial position by the return spring 160 Is provided.

In addition, the central portion of the fixed core 140 and the movable core 150 has a through hole provided with a shaft 170 connected through the energizing portion 200 and the driving portion 100 in the axial direction. The shaft 170 penetrates in the axial direction through the through hole, and the shaft 170 has the movable contact 210 at the upper end and the movable core 150 at the lower end thereof so that the movable core 150 moves up and down. To the movable contact 210.

A cover 240 formed in a box shape having a lower opening is mounted in a form above the driving unit 100, and a terminal hole is provided at an upper portion of the cover 240 and a fixed contact 220 is provided through the terminal hole. And a fixed terminal is inserted.

In the cover 240, a movable contact 210 is disposed at the bottom of the fixed contact 220 and coupled to the shaft 170 and having a space for contacting and separating with the fixed contact 220 for switching.

The lower portion of the movable contact 210 is provided with a contact spring 230 to have an elastic force when the movable contact 210 is in contact with the fixed contact 220. Through the contact spring 230, the movable contact 210 is able to maintain a contact state with the fixed contact 220 at a predetermined pressure or more. In addition, the contact spring 230 reduces the moving speed of the movable core 150 and the shaft 170 when the movable contact 210 is separated from the fixed contact 220, so that the movable core 150 is the core container 190. The impact force is alleviated when it comes in contact with, so that noise and vibration can be suppressed.

As described above, the upper portion of the electronic switch 10 includes a movable contact 210, a fixed contact 220, a contact spring 230, and a conductive part 200 formed of a cover 240. 140, the driving unit 150 including the movable core 150, the yoke 120, the coil 110, and the return spring 160 is positioned. Here, when power is applied to the coil 110 to form a magnetic field, the movable core 150 is sucked toward the fixed core 140, and the upper conducting unit 200 is provided by the shaft 170 connected to the movable core 150. Will be activated.

The metal plate 130 is usually made of a stainless material, in the present invention may be made of a pure iron material as well as a stainless material.

This is because the core container 190 and the cores 140 and 150 use pure iron.

In general, since stainless steel has higher resistance than pure iron, the circulating magnetic flux receives greater resistance in relation to the eddy current in the metal plate 130, resulting in lowering the performance of the driving unit 100.

Therefore, the material of the metal plate 130 is preferably made of pure iron having a low resistance value.

According to a preferred embodiment of the present invention, the metal plate 130 is configured to improve the eddy current phenomenon by bonding the auxiliary plate 131 of the thin plate made of pure iron at the bottom.

This is particularly the case when the metal plate 130 is made of a stainless material.

As described above, the material of the metal plate 130 should be made of pure iron having a low resistance value, but the pure iron has poor welding performance in bonding to the ceramic cover 240. Therefore, the upper part to be bonded to the cover 240 is made of a stainless material, the lower part is to bond the thin auxiliary plate 131 of pure iron material.

Although the present invention has been described with reference to one embodiment shown in the accompanying drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. Could be. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

10: electronic switch 100: drive unit
110: coil 120: yoke
130: metal plate 140: fixed core
150: movable core 160: return spring
170: shaft 180: coil bobbin
190: core container 200: energization unit
210: movable contact 220: fixed contact
230: pressure spring 240: cover
300: buffer member

Claims

Coils that are excited or demagnetized according to whether a control current is energized, yokes installed around the coils to form a magnetic path around the coils, and together with the yokes, a magnetic path is formed around the coils and made of stainless or pure iron. A metal plate, a fixed core fixed to the metal plate, a movable core in contact with the fixed core when the coil is excited, and between the movable core and the fixed core to fix the movable core. A return spring for applying an elastic force to be separated from the core, a shaft connected to the movable core and movable together with the movable core, a movable contact provided on the other end side of the shaft and movable in accordance with the movement of the shaft, and the movable It is fixedly installed opposite the contact point, and is moved in contact with or separated from the movable contact point. An electronic switch comprising a fixed contact for causing a miracle circuit to be closed or open, and a contact spring provided around the shaft under the movable contact, the contact spring providing an elastic contact pressure to the movable contact so as to contact the fixed contact. ,
When the metal plate is made of a stainless material, the electronic switch, characterized in that configured to improve the eddy current phenomenon by bonding the auxiliary plate of the thin plate made of pure iron to the bottom of the metal plate.

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