JPH1064403A - Fuse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discriminate a rated fuse and a standard fuse, even when a fuse is fitted to a fuse holder by printing or imprinting a rated display and a standard mark with color code on a surface of a glass rube. SOLUTION: Metal caps 1, 2 are fixed to both ends of a glass tube 3, and a fuse-element 4 for electrically connecting metal caps 1, 2 are electrically connected from the metal cap 1 to the metal cap 2 inside of the glass tube so as to form a fuse. Furthermore, a rated or a standard fuse is written for display by printing or imprinting with plural or single color mark line 5 in a shape for surrounding the surface of a cylinder. As a color code line, a method in which one color signifies one numerical number and one unit, for example, brown means I or V and red means 2 or A, or a method that one color means a specified numerical number or unit, for example, brown means 250V and red means 0.1A, are used for regulation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuse,
In particular, the present invention relates to a fuse with a rating indication indicating a rating.

[0002]

2. Description of the Related Art Conventionally, this type of fuse is used for electric products, and when a current or voltage exceeding a rated value is supplied to the electric product, a circuit of the electric product may be destroyed or a fire may occur. In order to prevent this, the fuse itself is disconnected to protect the circuit of the electric product.

FIG. 3 is a perspective view showing an example of this conventional fuse. Metal caps 1 and 2 on both ends of glass tube 3
Is fixed, and a fusible body 4 for electrically connecting the metal caps 1 and 2 is connected from the metal cap 1 to the metal cap 2 inside the glass tube. further,
The metal cap 1 has a voltage rating mark 7 and a current rating mark 8 for checking the voltage rating and the current rating of the fuse when the fuse is used, in order to avoid misuse of the fuse.
Is provided. The voltage rating mark 7 and the current rating mark 8 are numerical values and characters in a concave state (there is no color and discriminated by the brightness of unevenness) inscribed in the metal cap. Metal cap 2
In order to confirm that the product conforms to the safety standard, there is a recessed safety standard mark engraved on the metal cap 9 to confirm that the product has passed the safety standard. FIG. 4A is a development view of the cylindrical surface of the metal cap 1 of FIG. 3, in which a rated voltage stamp 7 and a rated current stamp 8 are provided. FIG. 4B shows the metal cap 2 shown in FIG.
3 is a development view of the cylindrical surface of FIG.

[0004] In this conventional fuse, the rating, the numerical value of the standard mark, the character, and the mark are engraved on the metal cap portion.
I was able to check. In this way, it is possible to avoid erroneously using a fuse having a different rating that is hard to be broken or that is easily broken, thereby impairing safety and reliability.

[0005]

However, in this conventional fuse, when it is attached to the fuse holder, the cylindrical surfaces of the metal caps 1 and 2 are covered by the fuse holder and are hidden. For this reason, the ratings and standard marks engraved with numerical values, characters, and marks on the surfaces of the metal caps 1 and 2 cannot be determined, and even if a fuse with an incorrect rating or standard is used, it cannot be detected. In addition, there is a problem that an electric product using the fuse may be destroyed or a fire may be caused and safety and reliability may be lost.

[0006] In addition, it is difficult to intuitively judge the rating of a single fuse because it is difficult to judge the rating at a glance because the rating is only engraved on the metal cap and it is necessary to judge the rating. There is a problem in that the fuse and the electric appliance using the fuse may be destroyed or ignited to lose safety and reliability.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a fuse in which a rating can be determined at a glance even when the fuse is mounted on a fuse holder.

[0008]

A fuse according to the present invention includes a glass tube, first and second metal caps fixed to both ends of the glass tube, and a gap between the first and second metal caps. A fusible body electrically connected inside the glass tube, and a color code (color code) provided on the surface of the glass tube and indicating a rating and a standard are provided.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Next, in order to clarify the above and other objects, configurations and effects of the present invention, embodiments of the present invention will be described below with reference to the drawings. First, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1A is a perspective view showing a fuse according to the first embodiment of the present invention.
As shown in FIG. 1A, in the fuse of this embodiment, metal caps 1 and 2 are fixed to both ends of a glass tube 3, and a fusible material 4 for electrically connecting the metal caps 1 and 2 is made of metal. The cap 1 is connected to the metal cap 2 inside the glass tube. Further, the rating and the standard of the fuse are printed, stamped or written by plural or single color code (color code) lines 5 so as to surround the cylindrical surface of the glass tube 3 and displayed. This color symbol (color code) line
"Brown" is "1" or "V", "Red" is "2" or "A", one color means one numerical value, unit, or "brown" is "250V", As a rule, a method of indicating a grouped numerical value and unit having one color such as “red” being “0.1 A” is provided.

The color symbol (color code) line 5 of the present embodiment can be provided in combination with a conventional display. FIG. 1B is a perspective view showing the fuse in such a combination. In FIG. 1B, similarly to the conventional example, the metal cap 1 has a voltage rating mark 7 and a voltage rating 8 so that the voltage rating and the current rating of the fuse can be checked at the time of use of the fuse and erroneous use can be avoided. Is provided. The voltage rating mark 7 and the voltage rating 8 are numerical values and characters in the concave state (there is no color and is read by the unevenness of light and darkness) engraved on the metal cap 1. The metal cap 2 has a recessed safety standard mark 9 engraved on the metal cap 2 so as to confirm that the metal cap 2 has passed the safety standard.
At the same time, as in FIG.
The standard is printed, stamped or filled in with a plurality or a single color code (color code) line 5 so as to surround the cylindrical surface of the glass tube 3 and is displayed. In the color code (color code) line 5, one color means one numerical value or unit, such as "1" or "V" for "brown" and "2" or "A" for "red". Method or "brown" is "250
As a rule, a method of indicating a grouped numerical value and unit having one color such as “V” and “red” being “0.1 A” is provided.

According to this embodiment, the rating of the fuse,
The standard is printed, stamped or filled in with a plurality or a single color code (color code) line 5 so as to surround the cylindrical surface of the glass tube 3 and displayed. According to such a configuration, even when the fuse is mounted on the fuse holder, the rating indicated by the plural or single color code (color code) line 5,
Since the standard is not covered or hidden by the fuse holder, the rating and standard of the fuse can be determined at a glance. Even if the fuse is not attached to a fuse holder or the like, the rating and the standard can be easily distinguished intuitively by color. Moreover, in the present embodiment, the rating and standard of the fuse are provided so as to surround the cylindrical surface of the glass tube 3, so that the rating and standard can be easily determined even if the fuse attached to the fuse holder is rotating. be able to.

Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 2A is a perspective view showing a fuse according to the second embodiment of the present invention.
In the fuse according to the present embodiment, similarly to the fuse according to the first embodiment, metal caps 1 and 2 are fixed to both ends of a glass tube 3, and a fusible body 4 that electrically connects the metal caps 1 and 2 is provided. Is connected from the metal cap 1 to the metal cap 2 inside the glass tube. Further, in the present embodiment, the rating and the standard of the fuse are printed, stamped or written on the surface of the glass tube 3 by dots 6 of a plurality of color symbols (color codes). This color symbol (color code)
Dots are such that "brown" is "1" or "V", "red" is "2" or "A", and one color means one numerical value or unit, or "brown" is " 250
As a rule, a method of indicating a grouped numerical value and unit having one color such as “V” and “red” being “0.1 A” is provided.

The color symbol (color code) dot 6 of the present embodiment can be provided in combination with a conventional display. FIG. 2B is a perspective view showing a fuse in such a combination. In FIG. 2B, similarly to the conventional example, the voltage rating and the current rating of the fuse are provided on the metal cap 1 so that the voltage rating and the current rating can be confirmed at the time of use of the fuse and the erroneous use can be avoided. Is provided. The voltage rating mark 7 and the voltage rating 8 are numerical values and characters in the concave state (the color is not colored but can be read with unevenness). The metal cap 2 has a recessed safety standard mark 9 engraved on the metal cap 2 so as to confirm that the metal cap 2 has passed the safety standard. At the same time, as in FIG. 2A, the rating and standard of the fuse are printed, stamped, or written on the surface of the glass tube 3 with a plurality of color code (color code) dots 6. In the color symbol (color code) dot 6, one color means one numerical value and unit such that "brown" is "1" or "V" and "red" is "2" or "A". Method, or “Brown” is “250V”, “Red” is “0.1
As a rule, a method of indicating a grouped numerical value and unit having one color such as "A" is provided.

According to this embodiment, the rating of the fuse,
The standard is printed, stamped or written on the surface of the glass tube 3 with a plurality of color symbol (color code) dots 6 and displayed. According to such a configuration, even when the fuse is mounted on the fuse holder, a plurality of color symbols (color codes) are provided.
Since the rating and standard indicated by the dot 6 are not covered or hidden by the fuse holder, the rating and standard of this fuse can be determined at a glance. Even if the fuse is not attached to a fuse holder or the like, the rating and the standard can be easily distinguished intuitively by color.

[0015]

As described above, according to the fuse of the present invention, rating indication,
Since the standard mark is displayed on the surface of the glass tube by printing, stamping, or writing, the rating and standard can be determined even when the standard mark is attached to the fuse holder. Further, even for a single fuse that is not attached to a fuse holder or the like, the rating can be easily and intuitively determined by color.

[Brief description of the drawings]

FIG. 1 is a perspective view of a fuse according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a fuse according to a second embodiment of the present invention.

FIG. 3 is a perspective view of a conventional fuse.

FIG. 4 is a development view of a metal cap of a conventional fuse.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Metal cap 2 Metal cap 3 Glass tube 4 Soluble body 5 Color code (color code) line 6 Color code (color code) dot 7 Rated voltage stamp 8 Rated current stamp 9 Safety standard mark stamp

Claims (3)

[Claims] 1. A glass tube, first and second metal caps fixed to both ends of the glass tube, and an electrical connection between the first and second metal caps inside the glass tube. A fuse comprising: a solution; and a color code (color code) provided on a surface of the glass tube and indicating a rating and a standard. 2. The method according to claim 1, wherein the rating and the standard are printed, stamped or written in a plurality or a single color code (color code) line so as to surround the cylindrical surface of the glass tube. The fuse according to claim 1, wherein 3. The fuse according to claim 1, wherein the rating and the standard are printed, stamped, or marked with a plurality of color symbol (color code) dots on the surface of the glass tube and displayed. .