KR101245684B1 - Relay and voltage supply control device having the same - Google Patents

Abstract

The relay is started. The relay includes a coil to determine whether magnetic flux is generated according to whether current is supplied, and a movable contact connected to or separated from the fixed contact according to whether the magnetic flux is generated, wherein any one of the fixed contact and the movable contact An auxiliary contact is implemented to prevent chattering that occurs between the fixed contact and the movable contact. The relay has an effect of preventing chattering.

Description

RELAY AND VOLTAGE SUPPLY CONTROL DEVICE HAVING THE SAME}

An embodiment according to the concept of the present invention relates to a relay, and more particularly, to a relay capable of detecting a chattering prevention structure and / or an ambient temperature and determining whether to operate according to a detection result, and a voltage supply control apparatus including the same.

A relay is an electronic component that performs a driving and signal transmission function of an electrical product or an electronic product. The relay uses a principle that the iron core becomes an electromagnet when a current flows through the coil wound around the core, and is a general-purpose component applied to almost all electrical appliances, electronic products, or communication devices.

Chattering occurs in the relay. Chattering refers to a phenomenon in which when the contacts of a switch or a relay in an electronic circuit stick to each other and fall off, they are actually repeated in a very short time by the mechanical vibration. When chattering occurs, the electronic circuitry may perform an unsafe operation.

In addition, a voltage supply control device, such as a voltage panel, including a conventional relay includes a separate temperature sensor relay that can sense the ambient temperature of the voltage supply control device and control the operation of the relay according to the detection result.

Accordingly, there is a disadvantage in that the manufacturing cost and volume of the temperature sensor relay and the voltage supply control device including the relay increase.

The technical problem to be achieved by the present invention is to provide a relay having a new structure that can prevent chattering.

Another technical problem to be achieved by the present invention is to provide a relay having a new structure that can reduce the manufacturing cost and volume of the voltage supply control device and determine whether to operate according to the sensing result of the ambient temperature.

Another technical problem to be achieved by the present invention is to provide a relay having a new structure that can reduce the manufacturing cost and volume of the voltage supply control device and determine whether to operate according to the result of chattering and sensing of ambient temperature.

Another technical problem to be achieved by the present invention is to provide a voltage supply control device including any one of the above-described relays.

Relay according to an embodiment of the present invention includes a coil to determine whether the magnetic flux is generated according to the supply of the current, and a movable contact that is connected to or separated from the fixed contact according to the occurrence of the magnetic flux, Any one of the movable contacts is implemented with an auxiliary contact for preventing chattering between the fixed contact and the movable contact.

In some embodiments, the auxiliary contact is connected to the fixed contact before the movable contact, and is separated from the fixed contact later than the movable contact.

According to another embodiment, the auxiliary contact is connected to the movable contact before the fixed contact, and is separated from the movable contact later than the fixed contact.

The relay is connected between a power line for supplying a coil voltage to the coil and a terminal of the coil, and a sensor for sensing an ambient temperature of the relay and connecting or disconnecting the power line and the terminal of the coil according to a detection result. It includes more.

According to an embodiment, the sensor separates the terminal of the power line and the coil when the ambient temperature is lower than the reference temperature.

According to another embodiment, the sensor separates the terminal of the power line and the coil when the ambient temperature is higher than the reference temperature.

According to another embodiment of the present invention, a relay includes a coil for determining whether magnetic flux is generated according to whether current is supplied, a movable contact connected or separated from a fixed contact depending on whether the magnetic flux is generated, and a coil voltage with the coil. And a sensor connected between a supplying power line and a terminal of the coil and sensing an ambient temperature of the relay and connecting or disconnecting the power line and the terminal of the coil according to a sensing result.

An apparatus for controlling voltage supply according to an embodiment of the present invention includes an electrical device and a relay for determining whether to supply an operating voltage to the electrical device. The relay includes a coil to determine whether magnetic flux is generated according to whether current is supplied, and a movable contact connected to or separated from the fixed contact according to whether the magnetic flux is generated, wherein any one of the fixed contact and the movable contact An auxiliary contact is implemented to prevent chattering that occurs between the fixed contact and the movable contact.

According to another embodiment of the present invention, a voltage supply control device includes an electric device, a coil that determines whether to supply an operating voltage to the electric device, and determines whether to generate magnetic flux according to the supply of current, and whether the magnetic flux is generated. A relay including a movable contact connected to or disconnected from the fixed contact, and a power line for supplying a coil voltage to the coil and a terminal of the coil, the ambient temperature of the relay being sensed, and the power according to a sensing result. And a sensor connecting or disconnecting a line and a terminal of the coil.

Relay including an auxiliary contact according to an embodiment of the present invention has the effect of preventing chattering.

A relay including a sensor according to another exemplary embodiment of the present invention has an effect of operating only at a proper temperature without operating at a temperature lower than or higher than a reference temperature.

Therefore, the voltage supply control device provided with the relay including the relay including the auxiliary contact or the relay including the sensor has an effect of supplying a stable voltage to the electric device.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to more fully understand the drawings recited in the detailed description of the present invention, a detailed description of each drawing is provided.
1A is a block diagram of a voltage supply control apparatus including a relay according to an embodiment of the present invention.
FIG. 1B is a diagram illustrating a connection process and a separation process of the fixed contact, the auxiliary contact, and the movable contact.
2 is a block diagram of a voltage supply control apparatus including a relay according to another embodiment of the present invention.
3 is a block diagram of a voltage supply control apparatus including a relay according to another embodiment of the present invention.

It is to be understood that the specific structural or functional descriptions of embodiments of the present invention disclosed herein are only for the purpose of illustrating embodiments of the inventive concept, But may be embodied in many different forms and is not limited to the embodiments set forth herein.

Embodiments in accordance with the concepts of the present invention are capable of various modifications and may take various forms, so that the embodiments are illustrated in the drawings and described in detail herein. It should be understood, however, that it is not intended to limit the embodiments according to the concepts of the present invention to the particular forms disclosed, but includes all modifications, equivalents, or alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are intended to distinguish one element from another, for example, without departing from the scope of the invention in accordance with the concepts of the present invention, the first element may be termed the second element, The second component may also be referred to as a first component.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Other expressions describing the relationship between components, such as "between" and "immediately between," or "neighboring to," and "directly neighboring to" should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, the terms "comprises ", or" having ", or the like, specify that there is a stated feature, number, step, operation, , Steps, operations, components, parts, or combinations thereof, as a matter of principle.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning of the context in the relevant art and, unless explicitly defined herein, are to be interpreted as ideal or overly formal Do not.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings.

FIG. 1A is a block diagram of a voltage supply control apparatus including a relay according to an embodiment of the present invention, and FIG. 1B is a diagram illustrating a connection process and a disconnection process of a fixed contact, an auxiliary contact, and a movable contact.

Referring to FIG. 1A, the voltage supply control device 10A includes a relay 20A, a relay power supply 30, a switch 32, a power supply 40, and an electric device 42. For example, the electrical device 42 may be controlled such as a light bulb, a switch, a motor, or the like.

The voltage supply control device 10A means a device capable of supplying a voltage output from the power supply 40, such as an AC voltage or a DC voltage, to the electric device 42 by using the switching operation of the relay 20A. It can be used in a variety of electrical appliances, electronic products, or communication equipment. For example, the voltage supply control device 10A may mean a distribution board, a switchboard, or a distribution board.

The relay 20A includes coil terminals 21-1 and 21-2, coil 22, return spring 23, hinge (or return spring fixing element) 24, leaf spring 25, movable contact 26 ), An auxiliary contact 27, and a fixed contact 28. The hinge 24 connects the body in which the return spring 23 and the leaf spring 25 are implemented.

The coil terminals 21-1 and 21-2 perform a function of supplying a voltage supplied through the power line 31 of the relay power supply 30 to the coil 22, for example, an iron core winding.

The voltage supplied from the relay power supply 30 may be supplied to or disconnected from the coil 22 by the switching operation of the switch 32.

The coil 22, also called an electromagnetic coil or a winding, determines whether magnetic flux is generated depending on whether current is supplied. For example, when the positive voltage of the relay power supply 30 is supplied to the coil terminal 21-1 and the negative voltage of the relay power supply 30 is supplied to the coil terminal 21-2, the coil terminal 21-is applied. Current flows from 1) toward the coil terminal 21-2.

Since the iron core wound around the coil 22 is magnetized by the current flowing through the coil 22 to attract the leaf spring 25, the auxiliary contact 27 connected to the movable contact 26 as shown in FIG. 1B. After the first contact with the fixed contact 28 ((b) of FIG. 1B), the movable contact 26 and the fixed contact 28 are formed while the auxiliary contact 27 and the fixed contact 28 remain connected. It is connected to each other (FIG. 1B (c)).

Therefore, even though chattering occurs between the movable contact 26 and the fixed contact 28, the auxiliary contact 27 and the fixed contact 28 maintain the electrical connection state, so that the voltage output from the power supply 40 is stable. Can be supplied to the electrical device 42. That is, the fixed contact 28 has the effect of preventing or reducing chattering occurring between the movable contact 26 and the fixed contact 28.

However, when the voltage supplied to the coil terminal 21-1 by the switch 32 is cut off, the current supplied to the coil 22 is cut off, so that the leaf spring 25 is returned to its original state by the return spring 23. Is returned.

At this time, as shown in (b) of FIG. 1B, even after the movable contact 26 and the fixed contact 28 are separated, the auxiliary contact 27 and the fixed contact 28 remain in electrical connection for a predetermined time. As a result, even if chattering occurs between the movable contact 26 and the fixed contact 28, the electrical device 42 is not damaged by the chattering.

In FIG. 1A, the auxiliary contact 27 that prevents chattering is connected to the movable contact 26 for convenience of description, but according to the embodiment, the auxiliary contact that prevents chattering may be It may be connected to the fixed contact 28. In addition, an auxiliary contact capable of preventing chattering may be connected to the leaf spring 25.

That is, irrespective of whether or not an auxiliary contact capable of preventing chattering is implemented, as shown by way of example in FIG. 1B (b), the auxiliary contact is fixed before the movable contact 26. ) Is separated from the fixed contact 28 later than the movable contact 26.

Further, when an auxiliary contact capable of preventing chattering is connected to the fixed contact 28, the auxiliary contact is connected to the movable contact 26 before the fixed contact 28 and then moves later than the fixed contact 28. What is necessary is just to isolate | separate from the contact 26.

2 is a block diagram of a voltage supply control apparatus including a relay according to another embodiment of the present invention.

Referring to FIGS. 1A and 2, the relay 20B of FIG. 2 does not include the auxiliary contact 27 as shown in FIG. 1A, and the voltage supply control device 10B switches the coil terminal 21-1 and the switch. Except for including the sensor 33 connected between the 32, the structure of the voltage supply control device 10A of FIG. 1A and the voltage supply control device 10B of FIG. 2 are substantially the same.

For example, the sensor 33 is connected between the power line 31 that supplies the coil voltage to the coil 22 and the terminal 21-1 of the coil 22, and senses and senses the ambient temperature of the relay 20B. As a result, the power line 31 and the terminal 22-1 of the coil 22 can be connected or disconnected. According to an embodiment, the sensor 33 may be implemented inside or outside the relay 20B.

According to an embodiment, the sensor 33 may separate the power line 31 and the terminal 22-1 of the coil 22 when the sensed ambient temperature is lower than the reference temperature, for example, the reference low temperature.

According to another embodiment, the sensor 33 may separate the power line 31 and the terminal 22-1 of the coil 22 when the sensed ambient temperature is higher than a reference temperature, for example, a mood high temperature.

According to another embodiment, the sensor 33 may supply a voltage output from the relay power supply 30 to the relay 20B when the sensed ambient temperature is higher than the reference low temperature and lower than the reference high temperature.

Therefore, after the switch 32 is turned on, the sensor 33 according to each embodiment supplies the voltage output from the relay power supply 30 to the relay 20B according to the sensed ambient temperature, or relay 20B. ) Can automatically cut off the supply voltage.

3 is a block diagram of a voltage supply control apparatus including a relay according to another embodiment of the present invention.

Referring to FIG. 3, the voltage supply control device 10C includes a relay 20A, a relay power supply 30, a switch 32, a sensor 33, a power supply 40, and an electric device 42.

1A through 3, the relay 20A may not only prevent chattering occurring between the movable contact 26 and the fixed contact 28 using the auxiliary contact 27, but also the switch 32. After the sensor is turned on, the sensor 33 may supply the voltage output from the relay power supply 30 to the relay 20B or automatically cut off the voltage supplied to the relay 20B according to the sensed ambient temperature.

The voltage supply control device 10A, 10B, or 10C according to each embodiment may be used for a ship. In addition, although the sensor 33 illustrated in each of FIGS. 2 and 3 is illustrated outside of each relay 20A or 20B, the sensor 33 may be implemented inside each relay 20A or 20B according to an exemplary embodiment. Since the voltage supply control device 10A, 10B, or 10C may be used in the panel and does not include a separate temperature sensor relay, there is an effect of reducing the manufacturing cost and volume of the panel.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

10A, 101B, and 10C: Voltage Supply Control
20A, 20B, and 20C: relay
22: coil
23: return spring
24: hinge
25: leaf spring
26: movable contact
27: auxiliary contact
28: fixed contacts
30: relay power
40: Power supply
42: electric device

Claims (8)

delete A coil for determining whether magnetic flux is generated according to whether current is supplied; And
And a movable contact connected to or separated from the fixed contact depending on whether the magnetic flux is generated.
Any one of the fixed contact and the movable contact is implemented with an auxiliary contact for preventing chattering between the fixed contact and the movable contact,
The auxiliary contact,
A relay connected to the fixed contact prior to the movable contact and separated from the fixed contact later than the movable contact. A coil for determining whether magnetic flux is generated according to whether current is supplied; And
And a movable contact connected to or separated from the fixed contact depending on whether the magnetic flux is generated.
Any one of the fixed contact and the movable contact is implemented with an auxiliary contact for preventing chattering between the fixed contact and the movable contact,
The auxiliary contact,
A relay connected to the movable contact prior to the fixed contact and separated from the movable contact later than the fixed contact. The method of claim 2 or 3, wherein the relay,
A sensor connected between a power line for supplying a coil voltage to the coil and a terminal of the coil, the sensor configured to sense an ambient temperature of the relay and to connect or disconnect the power line and the terminal of the coil according to a sensing result; relay. The method of claim 4, wherein the sensor,
A relay separating the power line and the terminals of the coil when the ambient temperature is lower than the reference temperature. The method of claim 4, wherein the sensor,
A relay separating the power line and the terminals of the coil when the ambient temperature is higher than the reference temperature. delete Electrical devices; And
A voltage supply control device comprising the relay according to claim 2 or 3 for determining whether to supply an operating voltage to the electric device.

Images