KR200489974Y1

KR200489974Y1 - Relay Actuator

Info

Publication number: KR200489974Y1
Application number: KR2020150002657U
Authority: KR
Inventors: 양준혁
Original assignee: 엘에스산전 주식회사
Priority date: 2015-04-23
Filing date: 2015-04-23
Publication date: 2019-09-03
Also published as: KR20160003787U

Abstract

Magnetic contactor actuator according to an embodiment of the present invention is a fixed contactor; A movable contact in contact with or separated from the fixed contact; And an electromagnetic contactor having an actuator for driving the movable contactor to contact or separate from the fixed contactor.
Here, the actuator includes at least one permanent magnet fixed to the 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 spacer disposed between the central axis and the permanent magnet to prevent the permanent magnet from being attached to the central axis by magnetic force; At least one guide unit is installed on the movable contactor and the spacer to guide the movement of the movable contactor.
The present invention omits the conventional mechanical configuration related to driving in the movable contactor and proposes a movable magnetic contactor actuator which directly contacts or disconnects the movable contactor only by the magnetic force of the actuator, that is, the repulsive force or the attraction force.

Description

Magnetic contactor actuator {Relay Actuator}

The present invention relates to a magnetic contactor, and more particularly, to a magnetic contactor actuator configured such that the movable contactor is directly operated by only the repulsive force and the manpower of the actuator without depending on other mechanical configurations.

A magnetic contactor is a device that opens and closes a current by converting a magnetic force of an electromagnet into mechanical movement through a mechanical configuration so that the movable contactor is in contact with or separated from the fixed contactor.

The magnetic contactor is used in various industrial electrical equipment, and its application is now made to a vehicle such as a hybrid vehicle or an electric vehicle.

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

The conventional magnetic contactor 1 is composed of a housing 2, a fixed contact 3, a movable contact 4 and an actuator 5 as is known.

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

For example, when the electromagnet 53 of the actuator 5 is turned on, the movable contactor 4 moves by repulsive force to contact the fixed contactor 3, whereby a current is applied to the fixed contactor 3. When the electromagnet 53 is turned off, the movable contactor 4 is separated from the fixed contactor 4 by the reaction force of the return spring 56, and thus the current applied to the fixed contactor 4 is interrupted.

The fixed contactor 3 is fixed to the upper part of the housing 2, and the actuator 5 is fixed to the bottom of the housing 2 through the 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 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 wrap around the electromagnet 53.

The stator 53a is provided with a shaft 55 that is movable in the axial direction of the magnetic contactor 1, and the movable contactor 4 is fixed to one end of the shaft 55, and the movable part 54 is provided at the other end thereof. It is installed to be elastically supported along the axis of the shaft.

A return spring 56 is installed on the outer circumference 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 downward. Elastic support.

Therefore, since the magnetic force disappears when the electromagnet 53 is turned off, the return spring 56 returns the movable member 54 and the movable contactor 4 connected to the movable member 54 to the lowered position, which is the initial position. Let's do it.

On the other hand, a head 55a having a diameter larger than that of the shaft 55 is formed in the shaft 55 between the movable contactor 4 and the stator 53a. The bottom of the head 55a is formed by the plate 51. It is caught by the support body 57 is supported to limit the falling position of the shaft 55, the upper portion serves to support the spring 58 to elastically push the movable contact (4).

In the conventional electromagnetic contactor actuator configured as described above, the electromagnet 53 generates a magnetic force when the electromagnet 53 is turned on, and the mover 54 moves upward by the magnetic force, that is, the repulsive force, based on the drawing. I am encouraged.

Accordingly, the mover 54 moves upwards to overcome the elastic force of the return spring 56, and simultaneously moves the shaft 55 and the movable contactor 4 mechanically connected to the mover 54, After that, the movable contactor 4 contacts the fixed contactor 3 so that a current is applied to the fixed contactor 4.

When the electromagnet 53 of the actuator 5 is turned off, the magnetic force of the electromagnet 53 is dissipated. Accordingly, the movable member 54 moves downward by the elastic force of the return spring 56. At this time, the shaft 55 ) And the movable contactor 4 are also moved downwards so that the movable contactor 4 is separated from the fixed contactor 3 and the current applied to the fixed contactor 3 is cut off.

In the conventional magnetic contactor 1 configured as described above, the actuator 5 converts the magnetic force of the electromagnet 53 into mechanical motion and transmits the movable element 54 and the shaft as a component for transmitting to the movable contactor 4. 55, the support 57 should be provided, and the stator 53a should be provided with a hole through which the shaft 55 can pass.

In addition, in the conventional actuator 5, the return spring 56 and the return spring 56 may be seated to allow the movable contactor 4 to return to the initial position when the electromagnet 53 is cut off. Space must be provided for the stator 53a and the mover 54, respectively.

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

Thus, the conventional actuator 5 is composed of many parts to perform the above-described roles, there is a problem not only to increase the overall manufacturing cost, assembly labor of the magnetic contactor, but also to miniaturize the magnetic contactor.

The present invention aims to provide a magnetic contactor actuator having a simpler configuration.

In order to achieve this object, the present invention omits the conventional mechanical configuration related to the driving of the movable contactor, and the electromagnetic contactor actuator which drives the movable contactor to be directly contacted or separated by only the magnetic force of the actuator, that is, the repulsive force or the attraction force. Providing.

Magnetic contactor actuator according to an embodiment of the present invention is a fixed contactor movable contact that is in contact with or separated from the fixed contactor; And an electromagnetic contactor having an actuator for driving the movable contactor to contact or separate from the fixed contactor.

Wherein the actuator is at least one permanent magnet fixed to the 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 spacer disposed between the central axis and the permanent magnet to prevent the permanent magnet from being attached to the central axis by magnetic force; At least one guide unit is installed on the movable contactor and the spacer to guide the movement of the movable contactor.

The spacer member is made of a nonmagnetic material and is fixed to one end of the central axis opposite to the permanent magnet.

The guide portion and the guide rod formed on the movable contact or the spacer; The movable contact or the spacer having a guide hole corresponding to the guide rod is provided.

The permanent magnet and the electromagnet may be disposed in a position corresponding to the fixed contact, in this case, the guide portion may be disposed in the center of the movable contact and the spacer.

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

As another embodiment of the present invention, the permanent magnet, the electromagnet and the guide portion may be disposed on the center axis of the actuator, and the guide portion may be disposed at least two outside the permanent magnet so as not to interfere with the permanent magnet. .

The movable contact actuator according to the present invention simplifies the configuration by moving the movable contactor directly by only the magnetic force of the actuator, that is, the repulsive force and the manpower, without depending on other mechanical configuration.

That is, the conventional electromagnetic contactor actuator must provide a mover, a support, and a shaft as a component for transmitting the repulsive force of the electromagnet to the movable contactor, as well as to form a hole through which the shaft can pass. In the magnetic contactor actuator according to the present invention, the configuration can be simplified by directly attaching the permanent magnet as the movable member to the movable contactor.

In addition, the conventional magnetic contactor actuator must provide a return spring as well as a space for restoring the return spring, so that the movable contact can be lowered and returned to the initial position when the power of the electromagnet is cut off. In the magnetic contactor actuator according to the present invention, the attraction between the permanent magnet and the central axis replaces the conventional return spring, thereby simplifying the configuration.

In addition, since the magnetic contactor actuator according to the present invention does not require a separate plate or yoke for magnetic formation unlike the conventional art, the configuration thereof can be simplified.

Since the number of parts of the magnetic contactor actuator according to the present invention, which is configured as described above, is remarkably reduced, not only can the production cost and assembly man-hours be reduced, but also the overall miniaturization of the magnetic contactor can be achieved.

1 is a longitudinal cross-sectional view of a magnetic contactor according to the prior art.
Figure 2a is a schematic diagram showing the initial state of the magnetic contactor actuator according to an embodiment of the present invention.
Figure 2b is a schematic diagram showing the energized state of the magnetic contactor actuator according to an embodiment of the present invention.
3A is a schematic diagram of a magnetic contactor actuator according to another embodiment of the present invention.
Figure 3b is a schematic diagram of a magnetic contactor actuator according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to be described in detail so that those skilled in the art to which the present invention pertains can easily implement the present invention. It does not mean that the technical spirit and scope of the invention is limited.

Magnetic contactor according to an embodiment of the present invention is a fixed contactor 10, the movable contactor 20 to be contacted or separated from the fixed contactor 10, the movable contactor 20 in contact with the fixed contactor 10 or Actuator 30 is driven to be separated.

In the above embodiment, the fixed contactor 10 has the same configuration as the conventional one, and the movable contactor 20 is also similar to the conventional one, but at least one permanent magnet 301 serving as a mover as a part of the actuator 30. ) Is fixed in the lower portion of the movable contact 20 is different.

The actuator 30 according to the present invention further includes an electromagnet 302 for imparting a force or repulsive force to the permanent magnet 301 in addition to the permanent magnet 301, and the electromagnet 302 is made of a magnetic material. It consists of the center axis | shaft 302a and the coil 302b wound by this center axis | shaft 302a.

Since the central axis 302a is a magnetic material, the permanent magnet 301 may be attached to the central axis 302a of the electromagnet 302 by attraction when the electromagnet 302 is off.

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

Therefore, the actuator 30 according to the present invention has a minimum separation distance between the permanent magnet 301 and the central axis 302a even if the permanent magnet 301 is attracted to the central axis 302a and moves in the direction of the central axis 302a. Holding to provide a separation means for preventing the electromagnet 302 from directly adhering to the central axis 302a.

The present invention provides the separation member 303 between the central axis 302a and the permanent magnet 301 as an embodiment of the separation means so that the permanent magnet 301 by the magnetic force the central axis 302a Preventing direct attachment to.

The spacer 303 is configured to be fixed to one end of the central axis 302a opposite to the permanent magnet 301, but is not necessarily limited to this configuration.

That is, the spacer 303 prevents direct contact between the permanent magnet 301 and the central axis 302a, and when the electromagnet 302 is turned on, repels the permanent magnet 301 by the repulsive force of the electromagnet 302. Any configuration can be used as long as it can be pushed out.

For example, instead of fixing the permanent magnet 301 to one end of the central axis 302a, the permanent magnet 301 is hung on a moving path of the permanent magnet 301, for example, in a housing (not shown). It is also possible to install components such as stoppers.

On the other hand, the spacer member 303 is preferably made of a nonmagnetic material such as plastic, which is, as described above, if the spacer member 303 is a magnetic material, the permanent magnet 301 is attached to the spacer member 303 electromagnet This is because it may be difficult to separate the permanent magnet 301 from the spacer 303 even if 302 is turned on.

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

Since the guide portion 304 is in an interaction relationship in which the movable contactor 20 moves with respect to the spacer 303, the guide portion 304 is configured to the movable contactor 20 and the spacer 303. It is desirable to provide each of a part of

Referring to FIG. 2A with respect to the guide portion 304, the guide portion 304 may include a guide rod 304a formed in the spacer 303, and a guide hole 304b corresponding to the guide rod 304a. It can also be configured as a movable contact (20) having.

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

In the guide hole 304b, at least one side in the axial direction of the guide hole 304b has the same diameter as the guide hole 304b so that the movable contactor 20 can move more stably with respect to the fixed contactor 10. A guide bush (not shown) may be formed.

On the other hand, the permanent magnet 301 and the electromagnet 302 may be disposed at a position corresponding to the fixed contact (10).

In other words, the permanent magnet 301, the electromagnet 302 and the fixed contact 10 may be disposed on the same axis as shown in Figs. 2a and 2b, in which case the guide portion 304 is a permanent magnet 301, on the center axis of the actuator 30, for example at the center of the movable contactor 20 and the spacer 303 to avoid interference with the electromagnet 302 and the fixed contactor 10. have.

In addition, the permanent magnet 301, the electromagnet 302 and the guide portion 304 may be disposed on the central axis of the actuator 30, as shown in Figure 3a, in this case permanent magnet 301 ) And the guide portion 304 may be formed in the permanent magnet 301 to form a hole 301a through which the guide rod 304a passes.

Of course, even if the permanent magnet 301, the electromagnet 302 and the guide portion 304 are disposed on the center axis of the actuator 30, as shown in Figure 3b, the guide rod ( At least two guide portions 304, that is, two guide rods 304a and two outside the electromagnet 302 so as not to form a hole 301a through which 304a passes and instead interfere with the permanent magnet 301. Two guide holes 304b may be disposed.

On the other hand, the guide unit 304 may be any configuration as long as the movable contactor 20 can be stably guided with respect to the actuator 30.

For example, it may be possible to provide some configuration of the guide portion 304 to interact with the movable contactor 20 in the housing (not shown), for example, in the movement path of the movable contactor 20. A rail or groove may be provided to the side of the movable contact 20.

Hereinafter, the operation of the magnetic contactor actuator 30 according to the embodiment of the present invention.

As shown in Figure 2a, the initial state of the magnetic contactor actuator 30 according to the present invention is the permanent magnet 301 is moved in the direction of the central axis 302a of the magnetic material by the attraction force, the spacer 303 The predetermined distance is maintained by, for example, the separation distance as much as the thickness of the spacer 303.

Here, the spacer 303 is a nonmagnetic material, and thus the permanent magnet 301 is in contact with the spacer 303 only.

In this state, when the electromagnet 302 is turned on and a current, for example, a low pressure (12V), flows through the electromagnet 302, a repulsive force for pushing the permanent magnet 301 from the electromagnet 302 is generated. The permanent magnet 301 as a ruler starts moving in the direction of the fixed contactor 10.

Accordingly, the permanent magnet 301 is separated from the spacer 303, the movable contact 20 coupled to the permanent magnet 301 is provided in the guide portion 304, that is, the guide rod 304a and the guide hole 304b. While stably guided by the start to move in the direction to the fixed contact (10).

Thereafter, as shown in FIG. 2B, the movable contactor 20 is in contact with the fixed contactor 10, whereby a current is applied to the fixed 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 central axis 302a of the magnetic material so that the permanent magnet 301 is the central axis 302a. Start to move in the direction.

Accordingly, the movable contactor 20 coupled to the permanent magnet 301 is separated from the fixed contactor 10 by the permanent magnet 301 and thus the current applied to the fixed contactor 10 is blocked.

Thereafter, when the permanent magnet 301 continues to move 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. Subsequently, when the permanent magnet 301 contacts the spacer 303, the permanent magnet 301 reaches the initial state of FIG. 2A.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be readily 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, all such changes and modifications being attached It is obvious that the claims belong to the claims.

10: fixed contactor 20: movable contactor
30: actuator 301: permanent magnet
301a: hole 302: electromagnet
302a: central axis 302b: coil
303: spacer 304: guide portion
304a: guide rod 304b: guide hole

Claims

Fixed contactor;
A movable contact in contact with or separated from the fixed contact; And
In the magnetic contactor having an actuator for driving the movable contactor to contact or separate from the fixed contactor,
The actuator is
At least one permanent magnet fixed to the 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 spacer disposed between the central axis and the permanent magnet to prevent the permanent magnet from being attached to the central axis by magnetic force;
At least one guide part installed at the movable contactor and the spacer member to guide the movement of the movable contactor;
The guide unit,
A guide rod formed on the movable contactor or the spacer; And
And the movable contactor or the spacer having a guide hole corresponding to the guide rod.

The method of claim 1,
The spacer member is made of a nonmagnetic material and is fixed to one end of the central shaft facing the permanent magnet.

delete

The method according to claim 1 or 2,
And said permanent magnet and said electromagnet are disposed at positions corresponding to said fixed contactor.

The method of claim 4, wherein
And the guide part is disposed at the center of the movable contactor and the spacer.

The method according to claim 1 or 2,
The permanent magnet, the electromagnet and the guide portion is disposed on the central axis of the actuator,
And the permanent magnet has a hole through which the guide rod passes.

The method according to claim 1 or 2,
The permanent magnet, the electromagnet and the guide portion is disposed on the central axis of the actuator,
And at least two guide parts disposed outside the permanent magnet so as not to interfere with the permanent magnet.