KR20030088587A - Apparatus for Examining Fuse Disconnection by Optical Fiber - Google Patents

Abstract

PURPOSE: An apparatus for detecting short circuit of a fuse using an optical fiber is provided to identify a state of short circuit without using an additional electronic circuit by installing an optical fiber at a bottom portion of a fuse socket. CONSTITUTION: An apparatus for detecting short circuit of a fuse using an optical fiber includes a fuse(14), a fuse socket(13), and a light emission portion(21). The fuse(14) is cut when the over current is applied. The fuse(14) is inserted into the fuse socket(13). Both terminals of the fuse(14) are electrically connected when the fuse(14) is inserted into the fuse socket(13). The light emission portion(21) is inserted into the bottom portion of the inserted fuse(14) and the inside of the fuse socket(13). The light emission portion(21) radiates the light of the predetermined intensity when the fuse(14) is a state of the short circuit. The light emission portion(21) is formed with an optical fiber.

Description

Apparatus for Examining Fuse Disconnection by Optical Fiber}

The present invention relates to an apparatus for checking a short circuit of a fuse used in an automobile, and more particularly, to an apparatus for checking a short circuit of a fuse by light emitted from an optical fiber using an optical fiber.

In automobiles, fuse boxes are installed to prevent malfunctions caused by overvoltage of various devices installed for driving the vehicle, such as headlights, emergency lights, horns, and wipers, and guide lights indicating the state of the vehicle. The fuse box used for this purpose collects the power line connected between the main power supply such as a battery and the corresponding equipment inside and connects each terminal formed in the box with the proper type terminal connected to each power line individually. A common fuse is inserted into the ball and the terminal is connected to a normal fuse so that a short circuit occurs when an overvoltage flows through the power supply line, thereby preventing malfunction of various accessory devices due to the overvoltage.

Therefore, if a device does not operate, such as the horn does not sound during operation or the wiper does not operate in the rain, it is necessary to first check the short-circuit state of the fuse connected to the failed device among the fuses built in the fuse box. At this time, various devices (methods) for checking the short circuit state of the fuse are disclosed.

Korean Patent Application No. 10-1999-0024132 discloses a device that detects a short circuit state of a fuse through a position display lamp and is detected by a diagnostic circuit board that detects a short circuit due to an overload.

Korean Patent Application No. 10-1997-0050644 discloses a device for checking whether a fuse is shorted by connecting a lamp to a fuse connecting part so that the lamp is turned on or off depending on whether the fuse is shorted.

In Korean Patent Application No. 10-1996-0074237, the base terminal side of the transistor becomes low level by the short circuit of the fuse using the switching function of the transistor, and the transistor displays the short circuit of the fuse by switching the battery power supply to the display section and the fuse LED section. A device is disclosed.

However, Korean Patent Application No. 10-1996-0074237 and Korean Patent Application No. 10-1999-0024132 require a separate circuit, and if this circuit is damaged, it is difficult to check whether a short circuit of the fuse is made. Since 10-1997-0050644 is used by connecting a lamp, the lamp may be damaged if an over current or an over voltage enough to short the fuse is applied.

The present invention has been made to solve the problems of the prior arts, and an object of the present invention is to provide a fuse short confirmation device capable of easily checking whether or not a short circuit of the fuse with the naked eye without having a separate electronic circuit.

1 shows a cartridge-type fuse diagnosis device in which an optical fiber is installed below the fuse socket, and

2A and 2B illustrate the principle of checking whether a fuse is shorted by passing light of an optical fiber.

Explanation of symbols on the main parts of the drawing

11: Cartridge type fuse diagnosis device 12: Electronic circuit board

13: connector 14: fuse

21: optical fiber

In order to achieve this object, the present invention provides a device for checking whether the fuse is shorted by the light of the optical fiber leaked into the gap generated during the short circuit of the fuse by installing the optical fiber in the lower portion of the fuse socket.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 shows a cartridge type fuse diagnosis device in which an optical fiber is installed below the fuse socket. As shown in Fig. 1, the fuse 14 of the cartridge-type fuse diagnosis device 11 is plugged into the connector 13 of the fuse socket and connected to the electronic circuit board 12 below, thereby providing a power source and various Functions such as checking the power supply connection between devices and preventing damage to the devices due to overvoltage, etc.

Here, the optical fiber 21 is provided in the lower part of the socket into which the fuse 14 is inserted. The position of the optical fiber is located at the lower portion of the fuse 14, and light emitted from the optical fiber passes through the shorted portion at the time of shorting of the fuse. Therefore, the position of the optical fiber can be anywhere where light from the optical fiber passes through the short circuit portion of the fuse 14 to check the short circuit of the fuse. In particular, the optical fiber using the refractive reflection angle of light can be manufactured in the form of a small tube is easy to install. In addition, it can be installed in each fuse socket using a single light source without additional configuration such as an electronic circuit.

2A and 2B illustrate the principle of checking whether a fuse is shorted by passing light of an optical fiber. As shown in Fig. 2A, when the state of the fuse is normal, the light of the optical fiber passing through the lower portion of the fuse is blocked by the fuse and appears black. However, as shown in FIG. 2B, when the fuse is shorted, light of the optical fiber passing through the lower portion of the fuse leaks out through the broken portion of the fuse. At this time, it is easy to visually check whether the fuse is short-circuited without a separate lamp from the outside without taking out the fuse from the socket.

According to the fuse short confirmation device having such a configuration and action, there is no need for a separate electronic circuit or a lamp to check the short circuit of the fuse to solve the problem of securing the space occupied by these components, and also to finely adjust the thickness of the optical fiber The spatial problem can be solved.

While the invention has been shown and described with respect to certain preferred embodiments thereof, the invention is not limited to these embodiments, and has been claimed by those of ordinary skill in the art to which the invention pertains. It includes all modifications of various forms that can be implemented without departing from the technical idea.

Claims (2)

In the device for checking the power supply state of the electrical equipment of the vehicle or the state of the fuse to protect the electrical equipment from overcurrent, A fuse disconnected by an overcurrent; A fuse socket into which the fuse is inserted and configured to energize both terminals of the fuse; And And a light emitting means inserted into a lower portion of the fuse and inserted into the fuse socket and emitting light of a predetermined intensity through a short circuited portion of the fuse. The method of claim 1, wherein the light emitting means A fuse short confirmation device for a vehicle, characterized in that the optical fiber.