KR101072631B1 - Electronic switch of which the magnetic force line is improved - Google Patents

Electronic switch of which the magnetic force line is improved Download PDF

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Publication number
KR101072631B1
KR101072631B1 KR1020100100874A KR20100100874A KR101072631B1 KR 101072631 B1 KR101072631 B1 KR 101072631B1 KR 1020100100874 A KR1020100100874 A KR 1020100100874A KR 20100100874 A KR20100100874 A KR 20100100874A KR 101072631 B1 KR101072631 B1 KR 101072631B1
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KR
South Korea
Prior art keywords
core
movable
yoke
contact
fixed
Prior art date
Application number
KR1020100100874A
Other languages
Korean (ko)
Inventor
최연순
Original Assignee
엘에스산전 주식회사
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Publication date
Application filed by 엘에스산전 주식회사 filed Critical 엘에스산전 주식회사
Priority to KR1020100100874A priority Critical patent/KR101072631B1/en
Application granted granted Critical
Publication of KR101072631B1 publication Critical patent/KR101072631B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/20—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/065—Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)

Abstract

The present invention is to secure the ring-shaped elastic member to the lower portion of the flange of the movable core, it is possible to mitigate the noise and vibration caused by the collision of the step of the flange and the core container while the movable core is returned to the open state from the closed state An electromagnetic switch with improved magnetic force lines, comprising: a coil excited or demagnetized according to whether a 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 forming a magnetic path, a fixed core fixed to the metal plate, a movable core in contact with the fixed core when the coil is excited, a core container housing the fixed core and the movable core, Installed between the movable core and the fixed core, applying an elastic force to separate the movable core from the fixed core An electronic switch comprising a return spring and a shaft connected to the movable core and movable with the movable core, wherein the movable core has a flange at an upper portion thereof, and the core container is extended in diameter to form a stepped outwardly. The expansion part is formed on the upper side so that the flange is lifted, and the lower end of the flange is configured to fix a ring-shaped elastic member.

Description

Electronic switch of which the magnetic force line is improved}

The present invention relates to an electronic switch having an improved magnetic force line, and more particularly, to an electronic switch having an improved magnetic force line to deform the shape of the yoke so that the magnetic force lines generated at the yoke are concentrated on the shaft to improve the force of the shaft movement. It is about.

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.

In the case of the conventional electronic switch as described above, the shape of the yoke is formed as a lower surface connecting the both side wall and the lower end of the both side wall.

At this time, the magnetic force line generated in the yoke is exposed to the outside, or moved to a close portion, such as a metal plate, there is a problem that the movement of the shaft is difficult to achieve the maximum efficiency as the amount of magnetic force line is reduced to the shaft.

The present invention for solving the conventional problems as described above is to change the shape of the yoke to concentrate the magnetic force lines generated in the yoke to the shaft to improve the force of the shaft movement to move the shaft to the maximum efficiency in the optimal state It relates to an electronic switch with improved magnetic force lines.

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 forming a magnetic path in the metal plate, a fixed core fixed to the metal plate, a movable core contacting the fixed core when the coil is excited, a core container accommodating the fixed core and the movable core; A return spring provided between the movable core and the fixed core to apply 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 the other end side of the shaft A movable contact fixed to the movable contact, the movable contact being movable in accordance with the movement of the shaft And a fixed contact for causing the electrical circuit to be closed or open by contacting or separating with the movable contact, and installed around the shaft under the movable contact, and elastically contacting the movable contact to contact the fixed contact. In the electronic switch including a pressure spring for providing a pressure, the yoke is composed of the upper and lower surfaces to move the magnetic force lines generated in the yoke in the shaft direction by connecting the upper and lower ends of the both side walls, and both side walls, respectively, The upper surface and the lower surface provides an electronic switch with improved magnetic force lines, characterized in that to form a fixture so that the core container is fitted.

According to the electronic switch with improved magnetic force lines according to the present invention, by modifying the shape of the yoke to concentrate the magnetic force lines generated in the yoke to the shaft to improve the force of the shaft movement to move the shaft to the maximum efficiency in the optimal state Has a very useful effect.

1 is a cross-sectional view of an electronic switch with improved magnetic force lines according to the present invention,
2 is a cross-sectional view showing another embodiment of an electronic switch with improved magnetic force lines according to the present invention;
3 is a cross-sectional view of the yoke according to the present invention.

Hereinafter, the configuration and operation of the electronic switch with improved magnetic force lines of the present invention according to the accompanying drawings in more detail as follows.

1 is a cross-sectional view of an electronic switch with improved magnetic force line according to the present invention, Figure 2 is a cross-sectional view showing another embodiment of the electronic switch with improved magnetic force line according to the present invention, Figure 3 is a cross-sectional view of the yoke according to the present invention. .

The electronic switch 10 having the improved magnetic force line of the present invention is installed around the coil 110 to form a magnetic path around the coil 110 and the coil 110 that is excited or demagnetized according to whether a control current is supplied. The yoke 120, the fixed core 140 fixed to the metal plate 130, the movable core 150 in contact with the fixed core 140 when the coil 110 is excited, and the fixed A core container 190 for accommodating the core 140 and the movable core 150, and installed between the movable core 150 and the fixed core 140, allows the movable core 150 to be 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. And a contact spring 230 which is installed around and provides an elastic force to the movable contact 210 to contact the fixed contact 220. The yoke 120 includes both side walls 121 and 122. The upper and lower surfaces 123 and lower surfaces 124 connect the upper and lower ends of the side walls 121 and 122 to move the magnetic lines of force generated in the yoke 120 in the direction of the shaft 170, respectively. 123 and the lower surface 124 form the fasteners (125, 126) so that the core container 190 is fitted.

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.

In general, the shape of the yoke 120 is formed as a lower surface 124 connecting the lower side walls 121 and 122 and the lower ends of both side walls 121 and 122.

At this time, the magnetic force line generated in the yoke 120 is exposed to the outside, or moved to a close portion such as the metal plate 130, the amount of magnetic force lines concentrated on the shaft 170 is reduced, the movement of the shaft 170 is maximum It was not achieved with efficiency.

According to an exemplary embodiment of the present disclosure, the yoke 120 may connect both side walls 121 and 122 and the upper and lower ends of the both side walls 121 and 122, respectively, to form a magnetic force line generated in the yoke 120. The upper surface 123 and the lower surface 124 to move in the direction (170), but the upper surface 123 and the lower surface 124 forms the fasteners (125, 126) so that the core container 190 is fitted.

In this case, the magnetic force lines generated in the yoke 120 are moved to the upper surface 123 and the lower surface 124 and finally concentrated to the shaft 170 through the core container 190 fitted to the fasteners 125 and 126. Thus, the movement of the shaft 170 may be efficiently performed in an optimal situation.

According to a preferred embodiment of the present invention, in the fixture 126 of the lower surface 124 of the yoke 120, the extension portion 128 for moving the magnetic force lines generated from the yoke 120 to the shaft 170 is vertically upward. Is formed extending.

As described above, when the extension portion 128 is formed at the fixture 126 of the lower surface 124, the magnetic force lines generated at the yoke 120 may be further concentrated by the shaft 170, and the fitting portion 126 may be inserted into the fixture 170. The core container 190 can be more securely fixed and is structurally stabilized.

According to a preferred embodiment of the present invention, the fixing portion 125 of the upper surface 123 of the yoke 120, the extension portion 127 for moving the magnetic force lines generated in the yoke 120 to concentrate on the shaft 170 is vertically downward Is formed extending.

As described above, when the extension part 127 is formed not only on the lower surface 124 but also on the fastener 125 of the upper surface 123, the extension portions 127 and 128 of the magnetic force lines generated from the yoke 120 are formed on the shaft 170. Can be more reliably concentrated in the direction of the center, and since the core container 190 fitted to the fixture 125 is held at the top and bottom, respectively, a more reliable guide is made.

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
121, 122: side wall 123: top surface
124: bottom surface 125, 126: fixing part
127, 128: extension 130: metal plate
140: fixed core 150: movable core
160: return spring 170: shaft
180: coil bobbin 190: core container
200: energization section 210: movable contact
220: fixed contact 230: contact spring
240: cover

Claims (3)

A coil that is excited or demagnetized according to whether a control current is energized, a yoke installed 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 fixed core fixed to a metal plate, a movable core in contact with the fixed core when the coil is excited, a core container accommodating the fixed core and the movable core, and installed 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 installed on the other end side of the shaft and movable according to the movement of the shaft. A movable contact, fixedly installed opposite the movable contact, in contact with or separated from the movable contact And 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 so as to contact the fixed contact. To
The yoke has both side walls,
The upper and lower surfaces of the two side walls are connected to each other to move the magnetic lines generated in the yoke in the shaft direction.
The upper and lower surfaces of the electronic switch with improved magnetic force line, characterized in that to form a fixture so that the core container is fitted. The method of claim 1,
An electronic switch with improved magnetic force lines, characterized in that the fixing portion of the lower surface of the yoke is formed with an extension extending vertically upward to move the magnetic force lines generated at the yoke to the shaft. The method of claim 2,
An electronic switch with improved magnetic force lines, characterized in that the fixing portion of the upper surface of the yoke is formed with an extension extending vertically downward to move the magnetic force lines generated in the yoke to the shaft.
KR1020100100874A 2010-10-15 2010-10-15 Electronic switch of which the magnetic force line is improved KR101072631B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100100874A KR101072631B1 (en) 2010-10-15 2010-10-15 Electronic switch of which the magnetic force line is improved

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Application Number Priority Date Filing Date Title
KR1020100100874A KR101072631B1 (en) 2010-10-15 2010-10-15 Electronic switch of which the magnetic force line is improved

Publications (1)

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KR101072631B1 true KR101072631B1 (en) 2011-10-13

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KR1020100100874A KR101072631B1 (en) 2010-10-15 2010-10-15 Electronic switch of which the magnetic force line is improved

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006310247A (en) 2005-03-28 2006-11-09 Matsushita Electric Works Ltd Electromagnet switching device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006310247A (en) 2005-03-28 2006-11-09 Matsushita Electric Works Ltd Electromagnet switching device

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