KR20160003787U

KR20160003787U - Relay Actuator

Info

Publication number: KR20160003787U
Application number: KR2020150002657U
Authority: KR
Inventors: 양준혁
Original assignee: 엘에스산전 주식회사
Priority date: 2015-04-23
Filing date: 2015-04-23
Publication date: 2016-11-02
Also published as: KR200489974Y1

Abstract

An electromagnetic contactor actuator according to an embodiment of the present invention includes a stationary contactor; A movable contact which is brought into contact with or separated from the fixed contact; And an electromagnetic contactor having an actuator for driving the movable contactor to contact or disconnect the fixed contactor.
Here, the actuator includes: at least one permanent magnet fixed to a lower portion of the movable contact; At least one electromagnet having a central axis of a magnetic material and a coil wound around the central axis; A spacing member disposed between the central axis and the permanent magnets to prevent the permanent magnets from being attached to the central axis by a magnetic force; And at least one guide portion provided on the movable contact and the spacer to guide movement of the movable contact.
The present invention proposes an electromagnetic contact actuator that excludes the conventional mechanical construction associated with driving in the movable contactor and which is movable to directly contact or separate the movable contact by only the magnetic force of the actuator, that is, the repulsive force or the attractive force.

Description

Relay Actuator

The present invention relates to an electromagnetic contactor, and more particularly, to an electromagnetic contactor actuator configured so that the movable contactor is directly operated only by the repulsive force and the attractive force of the actuator without depending on other mechanical configurations.

The electromagnetic contactor is a device for opening and closing a current by converting the magnetic force of the electromagnet into a mechanical movement through a mechanical configuration so that the movable contact is brought into contact with or separated from the fixed contact.

Such electromagnetic contactors are used in various industrial electrical equipments, and are now being applied to vehicles such as hybrid cars or electric vehicles.

1 is a longitudinal sectional view of a conventional magnetic contactor.

The conventional electromagnetic contactor 1 is composed of a housing 2, a stationary contactor 3, a movable contactor 4 and an actuator 5 as is well known.

The actuator 5 typically opens and closes the current by moving the movable contact 4 with respect to the fixed contact 3 by an electrical signal.

For example, when the electromagnet 53 of the actuator 5 is turned on, the movable contactor 4 is moved by the repulsive force to come into contact with the fixed contactor 3, thereby applying current to the fixed contactor 3 The movable contact 4 is disconnected from the fixed contact 4 by the reaction force of the return spring 56 and the electric current which has been applied to the fixed contact 4 is cut off as the electromagnet 53 is turned off.

A fixed contact 3 is fixed to an upper portion of the housing 2 and an actuator 5 is fixed to a bottom portion of the housing 2 through a connecting member 21.

The actuator 5 includes a plate 51, a yoke 52, an electromagnet 53, a mover 54, a shaft 55, a return spring 56, and a support body 57.

The electromagnet 53 is composed of a stator 53a and a coil 53b wound around the stator 53a.

The plate 51 is fixed to the housing 2 through the connecting member 21 and the yoke 52 fixed to the plate 51 is configured to surround the electromagnet 53.

A shaft 55 capable of moving in the axial direction of the electromagnetic contactor 1 is provided in the stator 53a. The movable contact 4 is fixed to one end of the shaft 55 and the movable contact 54 is fixed to the other end And is elastically supported along the axis of the shaft.

A return spring 56 is provided on the outer periphery of the shaft 55 between the stator 53a and the mover 54. The return spring 56 is supported by the stator 53a to move the mover 54 in the downward direction And is elastically supported.

Therefore, when the electromagnet 53 is turned off, the magnetic force disappears, so that the return spring 56 returns the movable contact 54 and the movable contact 4 connected to the movable contact 54 to the lowered position, .

On the other hand, the shaft 55 between the movable contact 4 and the stator 53a is provided with a head 55a having a larger diameter than the shaft 55. The bottom of the head 55a is supported by the plate 51 And is supported by the support member 57 to limit the lowering position of the shaft 55 and the upper portion thereof serves to support the spring 58 for urging the movable contactor 4 in a resilient manner.

When the electromagnet 53 is turned on, the electromagnet 53 generates a magnetic force, and the mover 54 moves upward by a magnetic force, that is, a repulsive force, with reference to the drawing It is strong.

The movable member 54 moves upward while overcoming the elastic force of the return spring 56. At the same time, the shaft 55 and the movable contact 4, which are mechanically connected to the movable member 54, also move upward, Thereafter, the movable contactor 4 is brought into contact with the stationary contactor 3 and current is applied to the stationary contactor 4. [

The magnetic force of the electromagnet 53 is extinguished when the electromagnet 53 of the actuator 5 is turned off so that the mover 54 moves downward due to the elastic force of the return spring 56. At this time, And the movable contactor 4 also move downward and the current which the movable contactor 4 is separated from the fixed contactor 3 and applied to the fixed contactor 3 is cut off.

In the conventional electromagnetic contactor 1 constructed as described above, the actuator 5 is constituted by a movable member 54, a shaft 56, and a shaft 56 as constituent elements for converting the magnetic force of the electromagnet 53 into a mechanical motion and transmitting it to the movable contactor 4, A support 55 and a support 57. The stator 53a must have a hole through which the shaft 55 can pass.

The conventional actuator 5 is configured such that the return spring 56 and the return spring 56 can be seated so that the movable contact 4 can be lowered and returned to the initial position when the power of the electromagnet 53 is shut off Must be provided to the stator 53a and the movable member 54, respectively.

In addition, the conventional actuator 5 does not directly affect the mechanical drive of the movable contactor 4 but has a plate 51 and a yoke 52 for forming a magnetic path from the electromagnet .

As described above, the conventional actuator 5 is composed of many parts in order to perform the above-mentioned roles, which not only increases the overall manufacturing cost and assembling cost of the electromagnetic contactor but also makes it impossible to miniaturize the electromagnetic contactor.

An object of the present invention is to provide a magnetic contactor actuator having a simpler structure.

In order to achieve this object, the present invention provides a magnetic contactor actuator that excludes a conventional mechanical structure related to driving of the movable contactor and drives the movable contactor to be directly contacted or separated only by the magnetic force of the actuator, .

The electromagnetic contactor actuator according to one embodiment of the present invention includes a movable contactor contacted with or separated from the stationary contactor; And an electromagnetic contactor having an actuator for driving the movable contactor to contact or disconnect the fixed contactor.

Wherein the actuator comprises: at least one permanent magnet fixed to a lower portion of the movable contact; At least one electromagnet having a central axis of a magnetic material and a coil wound around the central axis; A spacing member disposed between the central axis and the permanent magnets to prevent the permanent magnets from being attached to the central axis by a magnetic force; And at least one guide portion provided on the movable contact and the spacer to guide movement of the movable contact.

The spacing member is a non-magnetic material and is fixed to one end of the center shaft facing the permanent magnet.

Wherein the guide portion comprises: a guide rod formed on the movable contactor or the spacer; And the movable contact or the spacing member having a guide hole corresponding to the guide rod.

The permanent magnet and the electromagnet may be disposed at positions corresponding to the fixed contacts. In this case, the guide portion may be disposed at the center of the movable contact and the spacing member.

In another embodiment of the present invention, the permanent magnet, the electromagnet, and the guide portion are disposed on the central axis line of the actuator, and the permanent magnet has a hole through which the guide rod passes.

In another embodiment of the present invention, at least two permanent magnets, the electromagnets, and the guide portions are disposed on the central axis line of the actuator, and the guide portions are disposed outside the permanent magnets so as not to interfere with the permanent magnets .

According to the present invention, the movable contact actuator is structured so that the movement of the movable contactor is directly operated only by the magnetic force of the actuator, that is, the repulsive force and the attraction force, without depending on other mechanical configurations.

That is, a conventional electromagnetic contact actuator must necessarily provide a mover, a support, and a shaft as constituent elements for transmitting the repulsive force of the electromagnet to the movable contactor. In addition, the stator must form a hole through which the shaft can pass, In the electromagnetic contact actuator according to the present invention, the structure of the permanent magnet can be simplified by directly attaching the permanent magnet as a mover to the movable contact.

In addition, the conventional magnetic contactor actuator essentially provides a return spring for the movable contact member to descend and return to the initial position when the power of the electromagnet is interrupted, but also provides a space in which the return spring can be seated. In the electromagnetic contactor actuator according to the invention, the attraction between the permanent magnet and the center shaft replaces the conventional return spring, so that the structure can be simplified.

In addition, unlike the conventional art, the electromagnetic contact actuator according to the present invention does not require a separate plate or yoke for forming a magnetic path, so that its configuration can be simplified.

Since the number of parts of the electromagnetic contactor actuator according to the present invention thus constructed is remarkably reduced, the manufacturing cost and the number of assembling steps can be reduced, and the overall size of the electromagnetic contactor can be reduced.

1 is a longitudinal sectional view of an electromagnetic contactor according to the prior art.
2A is a schematic view showing an initial state of an electromagnetic contact actuator according to an embodiment of the present invention;
Fig. 2B is a schematic view showing a state of energization of the electromagnetic contactor actuator according to one embodiment of the present invention; Fig.
3A is a schematic view of an electromagnetic contact actuator according to another embodiment of the present invention.
3B is a schematic view of an electromagnetic contact actuator according to another embodiment of the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to illustrate the present invention in such a manner that a person skilled in the art can easily carry out the present invention. And does not imply that the technical idea and scope of the design is limited.

The electromagnetic contactor according to one embodiment of the present invention includes a stationary contactor 10, a movable contactor 20 which contacts or separates the stationary contactor 10, a movable contactor 20 which contacts or contacts the stationary contactor 10, And an actuator (30) for driving to be separated.

In the above embodiment, the stationary contactor 10 is the same as the conventional one, and the movable contactor 20 is also similar to the conventional one, but at least one permanent magnet 301 Is fixed to the lower portion of the movable contactor 20, as shown in Fig.

The actuator 30 according to the present invention further includes an electromagnet 302 for imparting an attractive force or a repulsive force to the permanent magnet 301 in addition to the permanent magnet 301. The electromagnet 302 is made of a magnetic material And includes a center axis 302a and a coil 302b wound around the center axis 302a.

The permanent magnet 301 can be attached to the central axis 302a of the electromagnet 302 by the attraction force when the electromagnet 302 is turned off since the center axis 302a is a magnetic material.

However, when the electromagnet 302 is directly attached to the center axis 302a, even if the electromagnet 302 is turned on to generate repulsive force to push out the permanent magnet 301, It is difficult to separate it from the first electrode 302a.

The actuator 30 according to the present invention has a minimum separation distance between the permanent magnet 301 and the center axis 302a even if the permanent magnet 301 is moved by the center axis 302a in the direction of the center axis 302a So as to prevent the electromagnet 302 from sticking directly to the central axis 302a.

The present invention provides an example of such a separating means by providing a spacing member 303 between the central axis 302a and the permanent magnet 301 so that the permanent magnet 301 can be rotated about the center axis 302a by a magnetic force, To prevent it from being directly attached.

The spacer 303 is configured to be fixed to one end of the center shaft 302a opposite to the permanent magnet 301. However, the present invention is not limited to this configuration.

That is, the spacer 303 prevents the direct contact between the permanent magnet 301 and the center shaft 302a and prevents the permanent magnet 301 from being brought into contact with the permanent magnet 301 by the repulsive force of the electromagnet 302 when the electromagnet 302 is turned on. Any configuration that can push out is possible.

For example, instead of fixing the permanent magnet 301 to one end of the center shaft 302a, the permanent magnet 301 is caught at a suitable position of the moving path of the permanent magnet 301, for example, A stopper or the like may be provided.

If the spacing member 303 is a magnetic body, the permanent magnet 301 is attached to the spacer member 303 and the electromagnet 301 is separated from the electromagnet 301. In this case, the spacing member 303 is made of a nonmagnetic material such as plastic. It may be difficult to separate the permanent magnet 301 from the spacing member 303 even if the permanent magnet 302 is turned on.

The movable contactor 20 according to the present invention is moved by the attractive force and the repulsive force by the permanent magnet 301 fixed to the lower portion and the electromagnet 302 disposed at the lower portion thereof. When the movable contactor 20 is moved to the fixed contactor 10 It is preferable to provide at least one guide part 304 for guiding the movement of the movable contactor 20 to the actuator 30 according to the present invention in order to stably contact or separate.

Since the guide portion 304 has an interaction relationship in which the movable contactor 20 moves relative to the spacer member 303, the guide portion 304 is configured such that the movable contactor 20 and the spacer member 303 Respectively.

Referring to FIG. 2A, the guide portion 304 includes a guide rod 304a formed on the spacer 303 and a guide hole 304b corresponding to the guide rod 304a. And the movable contact 20 having the movable contact 20 can be constructed.

Of course, the guide portion 304 may be constituted by a guide bar (not shown) formed in the movable contact 20 and a spacer 303 having a guide hole (not shown) corresponding to the guide bar .

A guide hole 304b is formed in the guide hole 304b so that the movable contactor 20 can move more stably with respect to the stationary contactor 10, A guide bush (not shown) may be formed.

Meanwhile, the permanent magnet 301 and the electromagnet 302 may be disposed at positions corresponding to the fixed contacts 10

In other words, the permanent magnet 301, the electromagnet 302 and the stationary contactor 10 can be arranged on the same axis line as shown in Figs. 2A and 2B, For example, the movable contact 20 and the center of the spacing member 303 on the central axis of the actuator 30 to avoid interference with the movable contact 301, the electromagnet 302 and the fixed contact 10, have.

3A, the permanent magnet 301, the electromagnet 302 and the guide portion 304 may be disposed on the central axis of the actuator 30. In this case, the permanent magnet 301 And the guide part 304 may be prevented from interfering with each other, the permanent magnet 301 may be provided with a hole 301a through which the guide rod 304a passes.

3B, even if the permanent magnet 301, the electromagnet 302 and the guide portion 304 are disposed on the central axis line of the actuator 30, At least two guide portions 304, that is, two guide rods 304a and two guide rods 304a are formed on the outside of the electromagnet 302 so as not to interfere with the permanent magnet 301, Guide holes 304b may be arranged.

The guide part 304 may be of any structure as long as the movable contact 20 can move while being guided stably against the actuator 30.

For example, it is possible to provide some configuration of the guide portion 304 that interacts with the movable contact 20 in the housing (not shown), for example, in the proper way of moving the movable contactor 20, (Not shown) and provide a corresponding configuration to the side of the movable contact 20.

Hereinafter, the operation of the electromagnetic contact actuator 30 according to the embodiment of the present invention will be described.

2A, the initial state of the electromagnetic contactor actuator 30 according to the present invention is such that the permanent magnet 301 is moved in the direction of the center axis 302a of the magnetic material material by attraction, For example, a distance corresponding to the thickness of the spacing member 303 is maintained.

Here, since the spacing member 303 is a non-magnetic body, the permanent magnet 301 is only in contact with the spacing member 303.

In this state, when the electromagnet 302 is turned on and a current, for example, a low voltage (12 V) flows through the electromagnet 302, a repulsive force to push the permanent magnet 301 from the electromagnet 302 is generated, The permanent magnet 301 as a magnet starts to move in the direction of the fixed contact 10.

The permanent magnet 301 is separated from the spacing member 303 and the movable contact 20 coupled with the permanent magnet 301 is guided by the guide portion 304 or the guide rod 304a and the guide hole 304b And starts to move toward the stationary contactor 10 while being stably guided by the stationary contactor 10.

Thereafter, as shown in Fig. 2B, the movable contact 20 is brought into contact with the stationary contactor 10, so that current is applied to the stationary contactor 10.

In this state, when the electromagnet 302 is turned off and the magnetic force is extinguished, an attractive force is generated between the permanent magnet 301 and the center axis 302a of the magnetic material material so that the permanent magnet 301 is moved along the center axis 302a. Direction.

The movable contact 20 coupled with the permanent magnet 301 is disconnected from the fixed contact 10 by the permanent magnet 301 and thus the current which has been applied to the fixed contact 10 is cut off.

Thereafter, when the permanent magnet 301 continuously moves by the attraction force with the central axis 302a, the movable contactor 20 is stably guided by the guide portion 304, that is, the guide rod 304a and the guide hole 304b Then, when the permanent magnet 301 comes into contact with the spacing member 303, the initial state of FIG. 2A is reached.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention, It is obvious that the claims fall within the scope of the claims.

10: stationary contactor 20: movable contactor
30: Actuator 301: permanent magnet
301a: Hall 302: Electromagnet
302a: center axis 302b: coil
303: spacing member 304: guide portion
304a: Guide rod 304b: Guide hole

Claims

Fixed contacts;
A movable contact which is brought into contact with or separated from the fixed contact; And
And an actuator for driving the movable contact to contact or separate the fixed contact,
The actuator
At least one permanent magnet fixed to a lower portion of the movable contact;
At least one electromagnet having a central axis of a magnetic material and a coil wound around the central axis;
A spacing member disposed between the central axis and the permanent magnets to prevent the permanent magnets from being attached to the central axis by a magnetic force;
And at least one guide portion provided on the movable contactor and the spacing member for guiding movement of the movable contactor.

The method according to claim 1,
Wherein the spacing member is a non-magnetic material and is fixed to one end of the center shaft facing the permanent magnet.

3. The method according to claim 1 or 2,
Wherein the guide portion comprises: a guide rod formed on the movable contactor or the spacer;
And the movable contact or the spacing member having guide holes corresponding to the guide rods.

The method of claim 3,
Wherein the permanent magnets and the electromagnets are disposed at positions corresponding to the fixed contacts.

5. The method of claim 4,
And the guide portion is disposed at the center of the movable contact and the spacing member.

The method of claim 3,
Wherein the permanent magnet, the electromagnet and the guide portion are disposed on a central axis line of the actuator,
And the permanent magnet has a hole through which the guide rod passes.

The method of claim 3,
Wherein the permanent magnet, the electromagnet and the guide portion are disposed on a central axis line of the actuator,
Wherein at least two guide portions are disposed outside the permanent magnet so as not to interfere with the permanent magnets.