JPS603479Y2 - Fuse box with fuse check device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fuse box with a fuse check device that incorporates a device for easily determining whether or not a fuse is blown in a fuse box for an automobile.

Conventionally, when a fuse blows, there is a method of determining whether the fuse has blown by looking at the discoloration of the pipe wall, but this method has the disadvantage that it requires a special fuse, so supply and compatibility in the market are low, and the cost is relatively high. be.

In addition, by inserting a light emitting diode in parallel with the fuse that should detect a blowout, current will not flow to the light emitting diode when the fuse is normal, but when the fuse blows, current will flow to the light emitting diode. There is a method to determine whether a fuse has blown by lighting it up, but this method requires the same number of light emitting diodes and protective resistors as the number of poles of the fuse, and may not be usable depending on the resistance value of the load. There are drawbacks such as the inability to have the same lighting function.

In contrast, the present invention attempts to provide a fuse box with a fuse check device that can eliminate the above-mentioned drawbacks, and its gist is that the input side terminal is connected to the power supply, Output side terminals are connected to respective loads, a plurality of fuses are placed in parallel with each other, a ground terminal is arranged to face the output side terminals of the same plurality of fuses, and the ground terminal and the output side terminal are connected to each other. A fuse box cover and a fuse box body forming a closed space containing the above-mentioned fuse, the above-mentioned earth terminal, and the above-mentioned sliding contact; a slit formed in the sliding direction; a sliding handle inserted through the slit and disposed outside the fuse box body and connected to the sliding contact; and a sliding handle connected in parallel to the plurality of loads and the The present invention has one check lamp bulb that lights up when current flows through the ground terminal, and is configured so that blowing of the fuse can be confirmed by checking that the check lamp bulb is turned off. According to the present invention, the structure is simple, it is easy to determine whether a fuse has blown, and it is highly effective when applied to a fuse box for an automobile.

Next, the present invention will be explained in more detail with reference to an embodiment shown in FIGS. 1 and 2.

First, Fig. 1 shows the electric circuit of a general automobile fuse box consisting of n-poles. When viewed from the input side, the fuse circuit usually includes a direct connection circuit for the battery 10, an interlocking circuit for the ignition switch 11, and a launching circuit. It is classified into switch 12 and other interlocking circuits.

Therefore, the fuse blowout check device in this invention is
To explain in terms of an electric circuit, input side terminals 5 (1-n pieces),
In addition to the output terminals 6 (1 to n), a third ground terminal 7
A movable input side sliding contact 41 and an output side sliding contact 41 are installed opposite to the output side terminals 6 from 1 to n, and make sliding contact between the output side terminals 6 and the ground terminal 7 from 1 to n. It consists of a moving contact 4° and a fuse blowout check lamp bulb 3 installed so as to light up when current flows between these two contacts.

The lamp bulb 3, the input side sliding contact 41, and the output side sliding contact 4□ are constructed integrally with the sliding handle/lamp lens 2, 1 is the fuse box body, 8 is the fuse, and in FIG. 9 indicates a cover, and 13 indicates a slit.

If the fuses 1 to n are not blown, current flows through the check lamp bulb 3 and lights it up as follows.

That is, fuse 8 → output side terminal 6 → input end sliding contact 41-m-
→ (1-n) (1-n) Check lamp bulb 3 → Output side sliding contact 42 → Earth terminal 7- → Earth.

Note that if the fuse 8 is blown, the check lamp bulb 3 will not light up because no current will flow through the circuit.

FIG. 2 shows the external appearance of this fuse box. The sliding handle/lamp lens 2 with a built-in check lamp bulb 3 is attached to the fuse box body 1 at one of the fuses 8.
-n slit 13 formed to slide relative to each other
When the fuse 8 is not blown, each check lamp bulb 3 lights up, and when it is blown, it remains off.

As described above, according to the present invention, the following effects can be achieved.

(1) In recent years, the number of poles in automotive fuse circuits has increased significantly due to the increase in the number of electrical circuits and safety.
The installation location of the fuse box is often not necessarily suitable for inspection and maintenance.

Furthermore, replacement work due to fuse blowing is often performed by people with little electrical knowledge.

Considering these circumstances, it is very effective to easily and accurately know which fuse circuit has blown.

(2) If the method of the present invention is adopted, in addition to being used as a fuse blowout check device, by setting the sliding handle at an appropriate position in the fuse circuit, the system can be used as a hole illumination lamp, courtesy lamp, or fuse box lamp. It can also be used as

(3) It is possible to determine which fuse is blown without removing the cover, and there is no need to check it with the circuit nameplate.

In the above embodiment, the check lamp bulb 3 is provided between the input side sliding contact 41 and the output side sliding contact 4°, but it may be provided between the ground terminal 7 and the ground.

In addition, the output side sliding contact 4□ of the above embodiment is connected to the ground terminal 7.
It may also be fixed to.

[Brief explanation of the drawing]

FIG. 1 is an electrical circuit diagram of a fuse box with a fuse check device according to the present invention, and FIG. 2 is a perspective view of the fuse box.

Claims (1)

[Scope of utility model registration request] A plurality of fuses, each having an input terminal connected to a power supply and an output terminal connected to each load, arranged in parallel with each other, and a ground terminal arranged opposite to the output terminal of the plurality of fuses; A sliding contact provided so as to be able to contact the ground terminal and the output side terminal, the above fuse,
A fuse box cover and a fuse box body that form a closed space containing the ground terminal and the sliding contact, a slit formed in the fuse box body in the sliding direction of the sliding contact, and the slit inserted through the fuse box cover. a sliding handle disposed outside the fuse box body and connected to the sliding contact, and a check lamp connected in parallel with the plurality of loads and lit when current flows to the ground terminal. 1. A fuse box with a fuse blowout check device, comprising a bulb, and configured to confirm blowout of the fuse by checking that the check lamp bulb is turned off.