KR20090064825A

KR20090064825A - Combination relay with fuse

Info

Publication number: KR20090064825A
Application number: KR1020070132171A
Authority: KR
Inventors: 박규남
Original assignee: 현대자동차주식회사
Priority date: 2007-12-17
Filing date: 2007-12-17
Publication date: 2009-06-22

Abstract

The present invention relates to a fuse-integrated relay, comprising one end for receiving a positive pole of the battery and the other end connected to the yoke of the relay, the fuse end being disconnected when overcurrent flows, and the positive pole of the battery through the secondary fuse. A coil connected to the ground through a load control switch, a movable contact connected to a positive pole of the battery through the yoke, and a fixed contact connected to the movable contact by electromagnetization of the coil to supply current to the load. It includes a contact.

Description

Combination relay with fuse

The present invention relates to a fuse integrated relay.

With the development of the electronics industry, automobiles that are mass-produced in recent years are equipped with various electronic devices with increased safety and convenience, and the proportion thereof is increasing day by day.

Accordingly, when an overcurrent flows, the heat generation is disconnected and the circuit is opened to protect the electronic device, thereby increasing the installation of fuses and relays, and the size of the space for installing such fuses and relays is also increasing. In order to apply a relay for controlling a load such as an automobile lamp or a motor, it is necessary to apply a fuse for circuit and load protection.

FIG. 1 is a schematic diagram of a load protection device connecting a fuse and a relay, and FIG. 2 is a circuit diagram showing this in more detail. As shown in FIGS. 1 and 2, in order for the load 24 to operate, when a contact of the load control switch 23 is attached, a current flows into the coil of the relay through the secondary fuse 22, and the relay is operated according to the principle of the electromagnet. The movable contact 15 is in contact with the fixed contact 16. At this time, the battery 25 (BATT) power is always supplied to the relay 'B' stage 11 through the primary fuse 21, and the movable contact 15 of the relay contacts the fixed contact 16 by electromagnetization of the coil. As a result, current flows to the fixed contact point 15 to operate the load.

In the case of the load protection device in which the fuses 21 and 22 and the relay 10 are connected to each other as shown in FIGS. Bars and circuits such as PCB patterns must be constructed.

However, as described above, a connection structure such as a wire, a junction box bus bar, and a PCB pattern, which are necessary for connecting the fuse and the relay, has a problem of a cost increase, and the fuse and the relay are separately arranged to provide a car box. There is a problem of equivalent size.

The present invention integrates the fuse and the relay so as not to require a wire for connecting the fuse and the relay, a bus bar of the junction box, a PCB pattern, and the like.

The present invention is connected to the positive end of the battery through the secondary end and the fuse end that is disconnected when the overcurrent flows to the other end connected to the yoke of the relay and the other end to receive the positive pole of the battery, the load control switch And a coil connected to ground through the yoke, a movable contact connected to the positive pole of the battery through the yoke, and a fixed contact connected to the movable contact by electromagnetization of the coil to supply current to the load.

In addition, the present invention, the one end to receive the positive pole of the battery and the other end connected to the yoke of the relay and the fuse end is disconnected when the over-current flows, and one side of the coil is connected to the singer yoke to receive the positive pole, A coil connected to ground through a load control switch, a movable contact connected to the positive pole of the battery through the yoke, and a fixed contact connected to the movable contact by electromagnetization of the coil to supply current to the load. do.

The fuse end is characterized in that the upper position of the fuse-integrated relay, characterized in that the fuse-integrated relay upper surface is formed of a transparent plastic so that the fuse end is visible.

The present invention can reduce the cost by integrating the fuse and the relay, it is possible to reduce the size of the car box according to the increase in the fuse and the relay according to the increase of the electronic device of the vehicle.

Hereinafter, the detailed description of the preferred embodiments of the present invention will be described with reference to the accompanying drawings. In the following description of the reference numerals to the components of the drawings it should be noted that the same reference numerals as possible even if displayed on different drawings.

3 is a view showing the structure of a fuse-integrated relay according to an embodiment of the present invention.

The present invention can reduce the overall space by having a component (hereinafter referred to as a 'fuse end') that puts the connection portion for connecting the primary fuse and the relay end in the existing automotive box inside the relay. That is, a fuse end portion 19 connected to the upper end of the yoke 17 is provided to perform a function of a primary fuse that has been conventionally external. When overcurrent flows to the load due to a short circuit, the fuse end portion (19) is disconnected to protect the load and the circuit.

To this end, the fuse-integrated relay has a fuse end 19, a coil 18, a movable contact 15, a fixed contact 16, the fuse end 19 is connected to the positive pole of the battery The positive pole of the input battery 25 is transferred to the yoke portion. Therefore, one end of the fuse 19 is connected to the external battery 25, the other end is connected to the yoke of the relay, the operation is disconnected when the over-current flows for reasons such as a short circuit.

The coil 18 is connected to the positive pole of the battery through the secondary fuse 22, and has a structure connected to the ground through the load control switch 23. When the load control switch 23 is on, the positive signal of the battery flows through the coil 18 to the ground, so that the coil 18 acts as an electromagnet, and the movable contact 15 is fixed to the fixed contact 16. ).

The movable contact 15 receives a positive pole through a yoke 17 connected through a fuse end 19, and the fixed contact 16 is a contact end contacted by the movable contact 17. Contact with the movable contact 17 by electromagnetization.

Referring to an operation example of the fuse-integrated relay 10 having the fuse end, the power supplied from the battery 25 is connected to the yoke 17 of the fuse-integrated relay through the relay 'B' stage 11. A current is applied to the movable contact 15 through the melted end 19 so that the power source is in a standby state at the movable contact 15.

At this time, when the contact point of the load control switch 23 connected to the relay 'S2' stage 14 in the state that the power of the battery 25 is always supplied to the relay 'S1' stage 13, the coil of the relay ( An electric current flows in 18). Due to the principle of electromagnetism, the movable contact 15 with the power standby due to the coil excitation of the relay comes into contact with the fixed contact 16 to supply current, and the current flows to the relay 'L' stage 12 to operate the load. .

On the other hand, the fuse end 19 is located at the top of the fuse-integrated relay 10, in order to easily check whether the fuse is disconnected for the user as shown in Figure 5 for the fuse blown to confirm a specific portion of the upper end of the fuse Implemented with transparent plastic. That is, by using a transparent plastic upper surface of the fuse-integrated relay at the point where the fuse end is located, the user can easily check the state of the fuse end from the outside.

4 is a diagram illustrating a structure of a fuse-integrated relay according to another exemplary embodiment of the present invention.

3 described above has described a structure in which the primary fuse is removed and the fuse is integrated with the relay to form the fuse end. 4 is a diagram illustrating an embodiment in which the secondary fuse is removed together with the fuse-end part integrated into the relay as well as the primary fuse.

When the fuses of the relay 'B' stage 11 and the relay 'S1' stage 13 are equally applied as the fuse stage 19, the relay 'S1' stage 13 contacts the yoke 17 of the relay. By fusion 40, the terminal called the relay 'S1' stage 13 can also be deleted. That is, the coil 18 connects one side of the coil to the yoke 17 and receives a positive pole, and is connected to the ground through a load control switch, so that the relay 'S1' stage 13 and the secondary fuse are not required. Do not.

Referring to the operation example of the structure of Figure 4, the principle that the power is supplied to the movable contact is the same as the embodiment of Figure 3, in the case of Figure 4 because the power does not go through a separate secondary fuse conventional relay 'S1' The terminal is fused to the yoke 17 of the relay, so that power is always supplied to the relay 'B' stage 11 and the coil 18.

When the contact of the load control switch 23 connected to the relay 'S2' stage 14 is turned on (on) the current flows to the coil 18 of the relay. As the load control switch 23 operates, the coil 18 is excited, and the movable contact 15 contacts the fixed point 16 by the principle of the electromagnet so that a current is supplied to the load.

On the other hand, in the case of Figure 4, as shown in Figure 5, by using the fuse-integrated relay upper surface of the point where the fuse end portion is located in a transparent plastic, the user can easily check the state of the fuse end portion from the outside.

In the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention is not to be determined by the embodiments described above, but will be apparent in the claims as well as equivalent scope.

1 is a schematic diagram of a load protection device connecting a fuse and a relay.

2 is a circuit diagram illustrating in more detail a load protection device connecting a fuse and a relay.

5 is a perspective view of a fuse-integrated relay having a transparent plastic for fuse blown confirmation according to an embodiment of the present invention.

Claims

A fuse end portion which is disconnected when an overcurrent flows from one end of the battery to the positive end of the battery and the other end connected to the yoke of the relay;

A coil connected to the positive pole of the battery through a secondary fuse and connected to ground through a load control switch;

A movable contact connected to the plus pole of the battery through the yoke;

A fixed contact connected to the movable contact by an electromagnetization of the coil to supply current to the load

A fuse integrated relay comprising a.

A coil connected to one side of the coil to the singer yoke to receive a positive pole, and to be connected to the ground through a load control switch;

A movable contact connected to the plus pole of the battery through the yoke;

A fuse integrated relay comprising a.

The fuse-integrated relay according to claim 1 or 2, wherein the fuse end is located above the fuse-integrated relay.

The fuse-integrated relay according to claim 3, wherein the fuse-integrated relay upper surface is formed of a transparent plastic so that the fuse end is visible.