KR101794402B1 - Auxliary contactor mechanism for magnetic contactor - Google Patents

Auxliary contactor mechanism for magnetic contactor Download PDF

Info

Publication number
KR101794402B1
KR101794402B1 KR1020150059178A KR20150059178A KR101794402B1 KR 101794402 B1 KR101794402 B1 KR 101794402B1 KR 1020150059178 A KR1020150059178 A KR 1020150059178A KR 20150059178 A KR20150059178 A KR 20150059178A KR 101794402 B1 KR101794402 B1 KR 101794402B1
Authority
KR
South Korea
Prior art keywords
contact
case
contact point
movable contact
movable
Prior art date
Application number
KR1020150059178A
Other languages
Korean (ko)
Other versions
KR20160127895A (en
Inventor
최관호
Original Assignee
엘에스산전 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘에스산전 주식회사 filed Critical 엘에스산전 주식회사
Priority to KR1020150059178A priority Critical patent/KR101794402B1/en
Publication of KR20160127895A publication Critical patent/KR20160127895A/en
Application granted granted Critical
Publication of KR101794402B1 publication Critical patent/KR101794402B1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/541—Auxiliary contact devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an upper auxiliary contact point mechanism of a magnetic contactor, and more particularly to an auxiliary contact point contact mechanism of an electromagnetic contactor which improves the stability of operation by preventing contact portions of the auxiliary contact unit from being affected by contact loads, And discloses a mechanism.
The present invention relates to a case having a box shape and connected to an upper part of an electromagnetic contactor; A stationary contact bar fixed to the case; A movable contact point having a closed position in contact with the stationary contact point and an open position separated from the stationary contact point; A lower end coupled to the case and an upper end supported by the movable contact point to provide a contact load on the movable contact point; And a locking protrusion connected to the main contact mechanism portion through the case to move up and down integrally with the movable core and to lower the movable contact point to the open position by pressing the upper portion of the movable contact point when it is lowered. And an upper auxiliary contact mechanism of the electromagnetic contactor.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an Auxiliary Contactor MECHANISM FOR MAGNETIC CONTACTOR,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a top auxiliary coincidence mechanism of an electromagnetic contactor, and more particularly to an electromagnetic contactor having an electromagnetic contactor having improved stability of a release operation by preventing a contact portion of an auxiliary contact unit from being affected by a contact load, To the upper auxiliary contact mechanism.

A magnetic contactor is a commonly used electric switch that is used as a switch for supplying or cutting off a power supply for controlling operation / stop of an electric motor. A stationary core accommodated in an excitation coil according to an excitation coil of an excitation coil attracts a moving core by a magnetic force and moves the movable core toward the fixed core according to attraction of the magnetic force, The movable contact support, which is called a cross bar, moves to the fixed core side, so that the movable contact, which constitutes the main contact, comes into contact with the corresponding fixed contact to bring the circuit into a closed state.

This electromagnetic contactor is provided with a closed position (aka closing position or on position) for supplying power to an electrical load such as an electric motor to be connected and an open position (also called an opening position or off And a normally closed contact for supplying or cutting off power to the exciting coil of the main contact mechanism. In this case, the main contact mechanism may be a normally closed contact.

FIG. 1 is a view showing the open state of the upper auxiliary contact mechanism of a conventional electromagnetic contactor, and FIG. 2 is a diagram showing a closed state of the upper auxiliary contact mechanism of a conventional electromagnetic contactor.

The upper auxiliary contact mechanism 10 of the electromagnetic contactor according to an example of the related art includes a case 12, a fixed contact base 14, a movable contact base 16, a contact spring 17, an up / down slider 18, .

The case 12 forms an outer appearance and serves to support internal components. The case 12 fixes the stationary contact bar 14 and supports and guides the up-and-down slider 18. The case 12 may be made of a synthetic resin insulating material having electrical insulation.

When the movable contact piece 16 is in the open position, the fixed contact piece 14 is connected to the fixed contact piece 14. When the movable contact piece 16 is in the open position, (14) is cut off. The stationary contact piece 14 is formed of a conductive plate material.

The movable contact piece 16 is formed in a straight shape and fixed to the ascending / descending slider 18 by a contact spring 17. In other words, the lower end of the contact spring 17 is fixed to the lifting slider 18, and the upper end of the contact spring 17 is fixed to the movable contact base 16. Thus, the movable contact piece 16 moves upward and downward together with the up-and-down slider 18 and serves to open and close between the pair of fixed contact pieces 14. [

The contact pressure spring 17 provides an elastic force in a direction in which the movable contact piece 16 comes into contact with the fixed contact piece 14 at a closed position, thereby giving a contact load.

By the release operation of the electromagnetic contactor, the complementary auxiliary contact mechanism is switched from the open state of Fig. 1 to the closed state of Fig.

The lifting / lowering slider 18 is lifted at the time of releasing the electromagnetic contactor.

As the ascending / descending slider 18 rises, the movable contact point 16 comes into contact with the fixed contact point 14 as shown in Fig. 2. Then, in order for the ascending and descending slider 18 to continuously ascend, 17) must be compressed. In other words, the ascending / descending slider 18 must rise to overcome the elastic force of the contact spring 17.

That is, in the conventional upper auxiliary contact mechanism, the contact load of the contact pressure spring 17 interferes with the upward movement of the lifting / lowering slider 18 during releasing operation, and thus the releasing voltage is increased. Accordingly, the mechanical part of the electromagnetic contactor is half-released by the repulsive force of the main contact, the suction force of the mechanical part becomes weaker as the voltage becomes lower, and the two- And there is a problem that a release voltage failure occurs.

An object of the present invention is to prevent the influence of the contact load of the upper auxiliary contact mechanism in release operation of the electromagnetic contactor so that the releasing operation of the electromagnetic contactor can be performed smoothly.

The present invention relates to a case having a box shape and connected to an upper part of an electromagnetic contactor; A stationary contact bar fixed to the case; A movable contact point having a closed position in contact with the stationary contact point and an open position separated from the stationary contact point; A lower end coupled to the case and an upper end supporting the movable contact point to provide a contact load on the movable contact point; And a locking protrusion connected to the main contact mechanism portion through the case to move up and down integrally with the movable core and to lower the movable contact point to the open position by pressing the upper portion of the movable contact point when it is lowered. And an upper auxiliary contact mechanism of the electromagnetic contactor.

Preferably, the elastic member is a coil spring, and the case includes a fixing protrusion for fixing the coil spring.

The locking protrusion is preferably protruded from a side surface of the slider to a space between the fixed contact blocks.

It is more preferable that the elastic members are provided on both sides of the movable contact point so that the movable contact point can rise and fall stably .

The case may be divided into a lower case forming a bottom surface and a side case forming a side surface, or may be integrally formed.

The upper auxiliary contact mechanism of the electromagnetic contactor according to the present invention has an effect that the release operation of the auxiliary contact slider ascending and descending with the movable core is not affected by the contact load of the auxiliary contact.

1 is a diagram showing an open state of the upper auxiliary contact mechanism of a conventional electromagnetic contactor.
2 is a view showing the closed state of the upper auxiliary contact mechanism of the conventional electromagnetic contactor.
3 is a diagram showing an open state of the upper auxiliary contact mechanism of the electromagnetic contactor according to the embodiment of the present invention.
4 is a view showing the closed state of the upper auxiliary contact mechanism of the electromagnetic contactor according to the embodiment of the present invention.
5 is an exploded perspective view for explaining the connection relation of the upper auxiliary contact mechanism of the electromagnetic contactor according to the embodiment of the present invention.
6 is a view showing an upper auxiliary contact mechanism of an electromagnetic contactor according to another embodiment of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or preliminary meaning and the inventor shall properly define the concept of the term in order to describe its invention in the best possible way It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. It should be noted that the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention, It should be understood that various equivalents and modifications are possible.

FIG. 3 is a view showing an opened state of the upper auxiliary contact mechanism of the electromagnetic contactor according to the embodiment of the present invention, and FIG. 4 is a closed state of the upper auxiliary contact mechanism of the electromagnetic contactor according to the embodiment of the present invention.

The present invention relates to an upper auxiliary contact mechanism of an electromagnetic contactor and includes a case 110, a fixed contact point 120, a movable contact point 130, an elastic member 140, an auxiliary contact mechanism slider 150, .

The case 110 is connected to the upper portion of the electromagnetic contactor, and has a box shape with an open top. The stationary contact bar 120 is fixed to the case 110. The case 110 is formed to support the auxiliary contact mechanism slider 150 to guide the up and down movement of the auxiliary contact mechanism slider 150.

The case 110 is formed of a synthetic resin material having insulation properties. The case 110 may be divided into a side case and a lower case, and the side case and the lower case may be integrally formed.

A cover (not shown) is coupled to the open upper surface of the case 110.

Two pairs of the fixed contact points 120 are connected and disconnected by the fixed contact points 120, which are paired by the movable contact points 130.

The movable contact bar 130 is supported by the elastic member 140 and is formed so as to switch the open position and the closed position by raising and lowering the auxiliary contact mechanism slider 150. The movable contact bar 130 of the present invention is fixed to the bottom surface of the case 110 by the elastic member 140 so that the auxiliary contact mechanism slider 150 are lowered by the locking protrusions 152 formed on the auxiliary contact mechanism slider 150 and lowered together with the auxiliary contact mechanism slider 150.

The auxiliary contact mechanism slider 150 is connected to the main contact mechanism portion of the electromagnetic contactor so as to be raised and lowered integrally with the movable core and has a locking protrusion 152 capable of pressing the movable contact base 130 when it is lowered do.

The locking protrusion 152 protrudes from the side surface of the auxiliary contact mechanism 150.

The stopper 152 is formed at a position corresponding to the central portion of the movable contact bar 130 and is formed in a space between the fixed contact bars 120 so as to prevent a space between the fixed contact bars 120 Respectively.

3, in the opened state, the locking protrusion 152 presses the movable contact bar 130 and is located below the fixed contact bar 120. In the closed state, as shown in FIG. 4, The locking protrusion 152 must be separated from the movable contact block 130 and positioned above the fixed contact block 120 so that the locking protrusion 152 can pass through the space between the fixed contact blocks 120.

The elastic member 140 serves to provide a contact load in a direction in which the movable contact bar 130 contacts the fixed contact bar 120 at a closed position of the movable contact bar 130. [ The elastic member 140 may be composed of a coil spring. The elastic member 140 provides an elastic force in a direction in which the length of the elastic member 140 is extended. When the movable contact piece 130 is in contact with the fixed contact piece 120 as shown in FIG. 4, It is necessary to provide an elastic force in a direction to raise the stand 130.

The length of the elastic member 140 of FIG. 3 and the length of the elastic member 140 of FIG. 4 are in a compressed state and the elastic member 140 of FIG. 4 is in a stretched state .

However, even in the state of FIG. 4, the elastic member 140 should not be restored to its original length, but should be compressed enough to provide a contact load.

For example, if the original length of the elastic member is 6 cm, the state of FIG. 4 is compressed such that the length of the elastic member is 4 cm. In the state of FIG. 3, the elastic member is further compressed, 2 cm. ≪ / RTI >

The contact load means a force that allows the movable contact bar 130 to maintain contact with the fixed contact bar 120. If the contact load is small, the connection between the movable contact base 130 and the fixed contact base 120 is unstable and a problem arises in securing the current supply performance. Therefore, the elastic member 140 is used to apply a load in a direction in which the movable contact piece 130 contacts the fixed contact piece 120. [

However, in the conventional upper auxiliary contact mechanism, the contact load hinders the upward movement of the auxiliary contact mechanism slider, and the releasing operation can not be performed smoothly.

The present invention prevents the contact load applied by the elastic member 140 from interfering with the upward movement of the auxiliary contact mechanism slider 150 so that the second release operation is not performed during the release operation, .

To this end, the upper auxiliary contact mechanism of the electromagnetic contactor according to the present invention is characterized in that the lower end of the elastic member 140 is coupled to the case 110 as shown in the figure.

The lower end of the elastic member 140 is coupled to the case 110, and the upper end is coupled to the movable contact bar 130.

The conventional upper auxiliary contact mechanism has a structure in which the movable contact point moves up and down together with the slider so that the restoring force of the elastic member which gives a contact load to the movable contact point during the release operation in which the slider is lifted interferes with the upward movement of the slider The present invention has a problem in that the movable contact bar 130 is fixed to the case 110 and the movable contact bar 130 is moved down when the auxiliary contact mechanism slider 150 is lowered So that the restoring force of the elastic member 140 does not interfere with the upward movement of the auxiliary contact mechanism slider 150 during the releasing operation.

Fig. 3 shows the open state of the upper auxiliary contact mechanism, wherein the main contact is closed. In other words, the movable core is attracted to the fixed core.

At this time, since the auxiliary contact mechanism slider 150 of the upper auxiliary contact mechanism moves up and down integrally with the movable core, the auxiliary contact mechanism slider 150 is in a lowered state.

The releasing operation is performed when the suction force between the fixed core and the movable core disappears, and the movable core rises. The auxiliary contact mechanism slider 150 rises on the side of the upper auxiliary descending mechanism and the movable contact base 130 moves to the closed position.

In the upper auxiliary contact mechanism of the present invention, the elastic member 140 does not interfere with the lifting movement of the auxiliary contact mechanism slider 150 and the restoring force of the elastic member 140 is initially applied to the auxiliary contact mechanism slider 150 And acts in a direction to assist the upward movement.

Therefore, the ascending of the auxiliary contact mechanism slider 150 does not perform the two-step operation, and a smooth releasing operation is performed.

5 is an exploded perspective view for explaining the connection relation of the upper auxiliary contact mechanism of the electromagnetic contactor according to the embodiment of the present invention.

As shown in the figure, the auxiliary contact mechanism slider 150 passes through the bottom surface of the case 110 and is assembled to the mechanical portion of the electromagnetic contactor.

The movable contact bar 130 has a structure that is assembled to the bottom surface of the case 110 through the elastic member 140. In other words, the elastic member 140 is fixed to the bottom surface of the movable contact bar 130, and the lower end of the elastic member 140 is fixed to the fixing protrusion 112 formed on the bottom surface of the case 110, The base 130 is assembled.

This structure can be assembled in such a manner that the movable contact bar 130 is assembled to the case and the auxiliary contact mechanism slider 150 is fitted to the case from above so that the side case and the floor case are not separately formed, Even when the case is integrally formed, excellent assembling property can be ensured.

6 is a view showing an upper auxiliary contact mechanism of an electromagnetic contactor according to another embodiment of the present invention.

In the illustrated embodiment, the movable contact bar 130 is supported by the two elastic members 140 so that the movable contact bar 130 can be smoothly moved up and down.

When one elastic member is used, the elastic member may be inclined to one side. In this case, the movable contact bar 130 may not smoothly ascend and descend.

In order to compensate for this, the present embodiment allows both sides of the movable contact bar 130 to be supported by the elastic member 140, so that the movable contact bar 130 can move up and down more smoothly.

As described above, the upper auxiliary contact mechanism of the electromagnetic contactor according to the embodiment of the present invention is not fixed to the auxiliary contact mechanism slider but is fixed to the bottom surface of the case, and when the auxiliary contact mechanism slider descends, So that the restoring force of the elastic member for applying the contact load to the movable contact point does not interfere with the releasing operation of the ascending of the auxiliary contact mechanism slider so that the releasing action of the magnetic contactor can be smoothly performed Lt; / RTI >

It is to be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, and the scope of the present invention will be indicated by the appended claims rather than by the foregoing detailed description. It is intended that all changes and modifications that come within the meaning and range of equivalency of the claims, as well as any equivalents thereof, be within the scope of the present invention.

100: upper auxiliary contact mechanism
110: Case
112: Fixing projection
120: Fixed Contact Base
130: movable contact band
140: elastic member
150: Auxiliary contact mechanism slider
152:

Claims (5)

A case connected to an upper part of the electromagnetic contactor and having a box shape;
A stationary contact bar fixed to the case;
A movable contact point having a closed position in contact with the fixed contact point and an open position separated from the fixed contact point;
A lower end coupled to the case and an upper end supporting the movable contact point to provide a contact load on the movable contact point; And
An auxiliary contact mechanism slider connected to the main contact mechanism portion through the case to integrally move up and down with the movable core and having a locking protrusion for pressing the upper portion of the movable contact block to lower the movable contact block to the open position when the module is lowered; ≪ / RTI &
The locking protrusion is a position separated from the closed position to the upper side of the movable contact point,
Wherein the auxiliary contact mechanism slider moves in a direction of ascending during releasing operation of the electromagnetic contactor,
The elastic member
Wherein the auxiliary contact mechanism slider is provided on both sides of the movable contact point so as to allow the movable contact point to rise and fall stably and to provide an elastic force in a direction in which the auxiliary contact mechanism slider ascends during a release operation.
The method according to claim 1,
Wherein the elastic member is a coil spring, and the case includes a fixing protrusion for fixing the coil spring.
The method according to claim 1,
Wherein the locking protrusion is protruded from a side surface of the slider to a space between the fixed contact blocks.
delete The method according to claim 1,
Wherein the case is divided into a lower case forming a bottom surface and a side case forming a side surface.
KR1020150059178A 2015-04-27 2015-04-27 Auxliary contactor mechanism for magnetic contactor KR101794402B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150059178A KR101794402B1 (en) 2015-04-27 2015-04-27 Auxliary contactor mechanism for magnetic contactor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150059178A KR101794402B1 (en) 2015-04-27 2015-04-27 Auxliary contactor mechanism for magnetic contactor

Publications (2)

Publication Number Publication Date
KR20160127895A KR20160127895A (en) 2016-11-07
KR101794402B1 true KR101794402B1 (en) 2017-11-07

Family

ID=57529868

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150059178A KR101794402B1 (en) 2015-04-27 2015-04-27 Auxliary contactor mechanism for magnetic contactor

Country Status (1)

Country Link
KR (1) KR101794402B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210144069A (en) 2020-05-21 2021-11-30 최충현 Drive control device of magnet contact

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210144069A (en) 2020-05-21 2021-11-30 최충현 Drive control device of magnet contact

Also Published As

Publication number Publication date
KR20160127895A (en) 2016-11-07

Similar Documents

Publication Publication Date Title
JP5497880B2 (en) Auxiliary contact mechanism of magnetic contactor
EP3396693A1 (en) High-voltage direct-current relay and assembly method therefor
US8093973B2 (en) Movable contact holder of electrical apparatus and assembling method of the movable contact holder
KR102108894B1 (en) Relay
EP2863408B1 (en) Magnetic contactor
CN106887365A (en) DC relay
JP5643405B2 (en) Electromagnetic switchgear
JPS6334178Y2 (en)
KR101622188B1 (en) Auxiliary Contactor of Electgromagnetic Contactor
KR101794402B1 (en) Auxliary contactor mechanism for magnetic contactor
KR200460095Y1 (en) Auxiliary contact unit for auxiliary relay
JP7156050B2 (en) relay
KR200484099Y1 (en) Magnetic contactor
KR101304078B1 (en) Actuator having interlock function and electric power switching apparatus with thereof
KR101717658B1 (en) Auxiliary Contactor of Electgromagnetic Contactor
CN106328446A (en) Magnetic latching relay, magnetic circuit structure and work method thereof
KR200343549Y1 (en) An outlet type earth leakage circuit breaker of contact bar assemble structure
KR101684476B1 (en) Magnetic contactor
CN217933635U (en) Anti short circuit structure and relay
CN214012848U (en) Easy-to-assemble contact assembly capable of resisting short-circuit current direct current contactor
CN219642742U (en) Full-sealed high-voltage direct-current contactor
JP6207227B2 (en) Magnetic contactor
KR100304920B1 (en) fixing structure for moving core of magnetic contactor
KR100298331B1 (en) auxiliary moving contact plate assembly of magnetic contactor
KR102524503B1 (en) Magnetic contactor

Legal Events

Date Code Title Description
A201 Request for examination
AMND Amendment
E601 Decision to refuse application
AMND Amendment
E902 Notification of reason for refusal
AMND Amendment
X701 Decision to grant (after re-examination)