JP2003272511A - Fuse holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuse holder capable of eliminating the risk that the power supply of a sound electric circuit goes out even in case one has removed the fuse by mistake during the current being fed. <P>SOLUTION: The fuse holder is composed of the fuse for protecting the circuitry of any electric circuit, a clip conductor for connecting the fuse with the electric circuit, and a connecting terminal for connecting the clip conductor with the external line, wherein a bypass means for bypassing the fuse is formed so that a socket or assisting connecting terminals is/are installed between the clip conductors at the two ends and the connecting terminal, and a shortcircuiting means is provided to shortcircuit the socket or between the assisting terminals. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuse holder for mounting a fuse used for protecting a circuit of an electric circuit.

[0002]

2. Description of the Related Art Generally, in an electric circuit, a fuse is used for circuit protection. However, while the electric circuit is energized, it is not possible to replace the fuse by removing it from the fuse holder due to deterioration of the fuse due to aging, etc. However, there is a problem that the fuse of the adjacent sound circuit is accidentally removed, and improvement is desired.

A conventional example of a fuse holder will be described below with reference to FIG. Referring to FIG. 10, the conventional fuse holder has a fuse 2 and clip conductors 3a and 3b for fixing and electrically connecting the fuse 2.
Connection terminals 4a and 4b for connecting the clip conductors 3a and 3b to an electric circuit, and the clip conductors 3a and 3b.
And a base 1 for fixing the connection terminals 4a and 4b.

In the fuse holder having the above-mentioned structure, the current being supplied flows from the connection terminal 4a on the power source side to the clip conductor 3a, and through the fuse 2 from the clip conductor 3b to the connection terminal 4b on the load side. . At this time,
When the fuse 2 is removed from the clip conductors 3a and 3b, the clip conductors 3a and 3b are electrically disconnected,
The electric circuit on the load side loses power.

[0005]

In the above conventional fuse holder, when the fuse has to be replaced due to deterioration of the fuse due to aging during energization,
Alternatively, there is a problem that the power source of a sound electric circuit is lost when an adjacent sound fuse is mistakenly removed by a replacement work by blowing a fuse or a test work of an electric circuit.

The present invention has been made to solve the above problems, and a fuse holder that does not lose the power of a healthy electric circuit even when the fuse is replaced and the fuse is accidentally removed during energization. Is intended to provide.

[0007]

A fuse holder according to claim 1 of the present invention is a fuse for protecting a circuit of an electric circuit, a clip conductor for connecting the fuse to the electric circuit, and the clip. In a fuse holder composed of a connection terminal for connecting a conductor to an external line,
A bypass means for bypassing the fuse is provided, and as the bypass means, a socket or an auxiliary connection terminal is provided between the clip conductors at both ends and a connection terminal, and a short-circuit means for short-circuiting the socket or the auxiliary connection terminal is provided. .

In the fuse holder having the above structure,
The bypass means is configured by inserting short-circuiting means for short-circuiting the sockets into the sockets between the clip conductors and the connection terminals at both ends of the bypass means, and the fuse can be removed without losing the power supply of a healthy electric circuit. You can

A fuse holder according to a second aspect of the present invention is a fuse for protecting a circuit of an electric circuit, a clip conductor for connecting the fuse to the electric circuit, and the clip conductor for connecting to an external line. And a connecting terminal for connecting the push button switch and the connecting terminal, the bypass means for bypassing the fuse, the bypass means interlocking with the attachment and detachment of the fuse. It is equipped with a conducting wire or a conducting wire for short circuit protection.

In the fuse holder having the above structure,
When the fuse is removed, the push button switch pushed by the fuse is restored, and the bypass means for bypassing the fuse is configured, so that the fuse can be removed without losing the power of the healthy electric circuit.

A fuse holder according to a third aspect of the present invention is a fuse for protecting a circuit of an electric circuit, a clip conductor for connecting the fuse to the electric circuit, and the clip conductor for connecting to an external line. In the fuse holder configured with the connecting terminal, the bypass unit that bypasses the fuse is configured, and the bypass unit includes a link rod that interlocks with the attachment and detachment of the fuse, an elastic conductor that is combined with the link rod, and the elastic member. A conductor for connecting the body conductor and the connection terminal or a conductor for short-circuit protection was provided.

In the fuse holder having the above structure,
When the fuse is removed, the elastic conductor combined with the link rod, which is pushed in by the fuse, returns,
Bypass means are configured to bypass the fuse so that the fuse can be removed without loss of power to the healthy electrical circuit.

A fuse holder according to a fourth aspect of the present invention is a fuse for protecting a circuit of an electric circuit, a clip conductor for connecting the fuse to the electric circuit, and the clip conductor for connecting to an external circuit. In a fuse holder configured with a connection terminal that configures a bypass means that bypasses the fuse, the bypass means includes a socket connected to each connection terminal by a conductor, a plug for connecting to the socket, and A plug pin of the plug and a lead wire connecting the plug pin are provided.

In the fuse holder having the above structure,
By connecting the connection terminal of the bypass means and the socket with a conductive wire and inserting the plug into the socket, the bypass means is configured, and the fuse can be removed without losing the power of the sound electric circuit.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. (First Embodiment) FIG. 1 is a view showing the outer shape and circuit configuration of a fuse holder according to the first embodiment of the present invention. In FIG. The description is omitted. In this embodiment, the fuse 2 is provided with bypass means.

That is, as shown in FIGS. 1C and 1D, the socket 24a is provided between the clip conductor 3a and the connection terminal 4a, and the socket 24b is provided between the clip conductor 3b and the connection terminal 4b. Further, as shown in FIGS. 1 (a) and 1 (b), the plug 23a and the plug 23b were connected by the connecting wire 21. Then, the plug 23a is inserted into the socket 24a, and the plug 23 is inserted into the socket 24b.
By inserting b, the bypass means is configured.

According to this embodiment, the electric circuit which is being energized is protected by the fuse 2.
When removing the plug, plug 2 into sockets 24a and 24b.
By forming a bypass circuit by inserting 3a, 23b,
The fuse 2 can be removed without losing power to the healthy electrical circuit.

(Second Embodiment) FIG. 2 is a block diagram showing a second embodiment according to the present invention. In FIG.
The same function parts as those in FIG. In the present embodiment, when the connection line is provided in parallel with the fuse, the clip terminal is provided at each terminal of the connection line.

That is, the clip conductor 3a and the connection terminal 4a
An auxiliary connection terminal 9a is provided between the clip conductor 3 and
The auxiliary connection terminal 9b is provided between the connection terminal b and the connection terminal 4b, the clip terminal 20a and the clip terminal 20b are connected by the connection wire 21, the clip terminal 20a is connected to the auxiliary connection terminal 9a, and the clip terminal is connected to the auxiliary connection terminal 9b. By connecting to 20b, the bypass means is comprised.

According to the present embodiment, the electric circuit during energization is protected by the fuse 2.
In the case of removing the fuse 2, by connecting the clip terminals 20a and 20b to the auxiliary connection terminals 9a and 9b, a bypass circuit is configured, and the fuse 2 can be removed without losing the power supply of a healthy electric circuit.

(Third Embodiment) FIG. 3 is a block diagram showing a third embodiment according to the present invention. In FIG.
The same functional parts as those in FIG. 10 are designated by the same reference numerals and the description thereof will be omitted. In this embodiment, the main circuit, the bypass circuit, and the alarm circuit are automatically turned on / off by the push button switch.

That is, the base 1 is provided with a bypass means, and the push button switch 5 is built in as a means. And the contact terminal 6a of the push button switch 5
And the connection terminal 4a on the power supply side are connected by a conductor wire 8a, and the contact terminal 6b and the connection terminal 4b on the load side are connected by a conductor wire 8b.

Further, the contact terminal 6 of the push button switch 5
c and the output terminal 7a are connected by a conductor 8c, and the contact terminal 6d and the output terminal 7b are connected by a conductor 8d. As a result, while the push button 5a of the push button switch 5 is being pushed by the fuse 2, the contact terminal 6 of the bypass means is held.
It has a function of opening between a and 6b and between contact terminals 6c and 6d.

That is, while the fuse 2 is attached to the base 1, the push button 5 of the push button switch 5 is
Since a is pushed by the fuse 2, the bypass means is not formed, and the current flows from the connection terminal 4a on the power supply side to the clip conductor 3a, the fuse 2, the clip conductor 3b, and the external connection terminal 4b on the load side. The electric circuit is protected.

Next, without completely pulling out the fuse 2 from the clip conductors 3a and 3b from the base 1, the push button 5a of the push button switch 5 is restored, and the contact terminals 6a and 6b.
When a current is drawn to a position where the space between the contact terminals 6c and 6d closes, the current flows from the connection terminal 4a on the power supply side to the clip conductor 3a, the fuse 2, the clip conductor 3b, and the connection terminal 4b on the load side. Form the circuit.

Further, the second circuit composed of the connecting terminal 4a of the bypass means, the conductive wire 8a, the contact terminals 6a and 6b, the conductive wire 8b, and the connecting terminal 4b causes a current to flow in parallel to protect the electric circuit. At the same time, the energized state is continued. Further, the contact terminals 6c and 6d output from the output terminals 7a and 7b as alarm contacts to notify or give an alarm to the central control room, the monitoring control panel and the like.

Next, when the fuse 2 is completely pulled out of the clip conductors 3a and 3b from the base 1, since only the bypass means is constituted, the current flows from the connection terminal 4a on the power source side to the conductor wire 8a and the contact terminals 6a and 6b. , The conductor 8b, and the connection terminal 4b on the load side, and the contact terminals 6c, 6d
In this way, output is made from the output terminals 7a and 7b as alarm contacts, and the central control room, monitoring control panel, etc. are notified or warned.

According to the present embodiment, the electric circuit during energization is protected by the fuse 2.
When the fuse is removed, the push button switch 5 constitutes the bypass means, and the fuse 2 can be removed without losing the power supply of the sound electric circuit.

(Fourth Embodiment) FIG. 4 is a block diagram showing a fourth embodiment according to the present invention. In FIG.
The same functions as those in FIG. This embodiment is a modification of the third embodiment, and only different configurations will be described. That is, the fuse holder of the fourth embodiment is
As shown in (a), (c) and (e), the contact terminal 6b and the connection terminal 4b are connected by the short-circuit protection conductor 10 as an internal bypass means of the stand 1. Others are the same as in FIG.

According to this embodiment, the electric circuit which is being energized is protected by the fuse 2.
In the case of removing the fuse 2, the push button switch 5 constitutes a bypass circuit, and the fuse 2 can be removed without losing the power of the sound electric circuit. Further, when the fuse is removed, the short circuit protection conductor 10 can protect the electric circuit.

(Fifth Embodiment) FIG. 5 is a block diagram showing a fifth embodiment of the present invention. In FIG.
The same functional parts as those in FIG. 3 are designated by the same reference numerals and the description thereof will be omitted. In the present embodiment, the attachment / detachment of the fuse is transmitted to the elastic conductor via the link rod so that the bypass circuit is opened / closed.

That is, the fuse 2 is used as a bypass means.
Link bar 11 that works in conjunction with the movement of attaching and detaching
And an elastic conductor 12 combined with the link rod 11
a, 12b are built in, and the elastic conductor 12a and the connection terminal 4b on the load side are connected by a conductor 8b.
The conductor 13a which is a contact point with a and the elastic conductor 12a is connected.

Further, the elastic conductor 12b and the output terminal 14b
13 which is connected to the elastic conductor 12b and constitutes a contact point
b and the output terminal 14a are connected. As a result, while the link rod 11 is being pushed by the fuse 2, the bypass means has a function of opening between the elastic conductors 12a and 13a and between the elastic conductors 12b and 13b.

That is, since the link rod 11 is pushed in by the fuse 2 while the fuse 2 is attached to this stand 1, no bypass means is formed, and the current flows from the connection terminal 4a on the power source side. The electric circuit flows to the clip conductor 3a, the fuse 2, the clip conductor 3b, and the external connection terminal 4b on the load side to protect the electric circuit.

Next, without completely pulling out the fuse 2 from the clip conductors 3a and 3b from the base 1, the link rod 11 is restored and the elastic conductors 12a and 13a are separated from each other by the elastic conductors 12b and 13b. When it is pulled out to the position where it closes, the current flows from the connection terminal 4a on the power supply side to the clip conductor 3a, the fuse 2, the clip conductor 3b, and the connection terminal 4b on the load side, and from the connection terminal 4a of the bypass means. Conductor 13a, elastic conductor 12a, conductor 8
b, and flows in parallel with the connection terminal 4b, the electric circuit is protected, and the energized state is continued. Further, the elastic conductor 12b and the conductor 13b output from the output terminals 14a and 14b as alarm contacts to notify or give an alarm to the central control room, the monitor control panel and the like.

Next, when the fuse 2 is completely pulled out from the base 1 from the clip conductors 3a and 3b, only the bypass means is constituted, so that the current flows from the connection terminal 4a on the power source side to the conductor 13a, the elastic conductor 12a, and the like. It flows through the conductor 8b and the connection terminal 4b on the load side, and further, by the conductor 13b and the elastic conductor 12b, the output terminals 14a, 1 as alarm contacts.
It is output from 4b and is notified or alarmed to the central control room, the monitoring control panel, etc.

According to the present embodiment, the electric circuit during energization is protected by the fuse 2.
In the case of removing the fuse 2, the conductor 13a and the elastic conductor 12a constitute the bypass means, and the fuse 2 can be removed without losing the power supply of the sound electric circuit.

(Sixth Embodiment) FIG. 6 is a block diagram showing a sixth embodiment according to the present invention. In FIG.
The same functional portions as those in FIG. 5 are designated by the same reference numerals and the description thereof will be omitted. 6 is different from FIG. 5 in that the conductor 8b is provided with the short-circuit protection conductor 10, and other configurations are similar to those in FIG. That is, FIG. 6 (a), (c), (e)
As shown in, the internal bypass means of the stand 1 is that the elastic conductor 12a and the connection terminal 4b are connected by the short-circuit protection conductor 10.

According to the present embodiment, the electric circuit in the normal condition is protected by the fuse 2 and the fuse 2
In the case of removing the fuse 2, the conductor 13a and the elastic conductor 12a constitute the bypass means, and the fuse 2 can be removed without losing the power supply of the sound electric circuit. Further, in the state where the fuse is removed, the short circuit protection conductor 10 can protect the circuit of the electric circuit.

(Seventh Embodiment) FIG. 7 is a block diagram showing a seventh embodiment according to the present invention. In FIG.
The same functional parts as those in FIG. 10 are designated by the same reference numerals and the description thereof will be omitted. In the present embodiment, as described above, the bypass means is provided inside the base 1, and the bypass means is used as the means.
Sockets 16a to 16d attached to the lead wire 8a
8d and a plug 15 for insertion into the sockets 16a to 16d.

Further, the connection terminal 4a on the power source side and the socket 16
d is connected by a conductor 8a, and the load side connection terminal 4b and the socket 16b are connected by a conductor 8b. This socket 16
Plug pins 15d and 15b to conductors 17b
By inserting the plug 15 connected in step 1, the bypass means is constructed.

Further, the socket 16c and the output terminal 7a
Are connected by a conductor 8c, and the socket 16a and the output terminal 7b are connected.
Are connected by a conductor 8d. This socket 16c, 16a
By inserting the plug 15 in which the plug pins 15c and 15a are connected to each other by the conductive wire 17a, output is made from the output terminals 7a and 7b as alarm contacts, and the central control room, the monitor control panel, etc. are notified or alarmed.

According to the present embodiment, the electric circuit during energization is protected by the fuse 2.
In the case of removing the fuse 2, the plug 15 is inserted into the socket 16 provided in the base 1 to configure the bypass means, and the fuse 2 can be removed without losing the power of the sound electric circuit.

(Eighth Embodiment) FIG. 8 is a block diagram showing an eighth embodiment according to the present invention. In FIG.
The same functional parts as those in FIG. 7 are designated by the same reference numerals and the description thereof will be omitted. The difference between this embodiment and FIG. 7 is that FIG.
As shown in (b), (c), and (d), the internal bypass means of the base 1 is that the connection between the socket 16b and the connection terminal 4b is connected by the short-circuit protection conductor wire 10, and the others are as shown in FIG. Similar to 7.

According to the present embodiment, the electric circuit during energization is protected by the fuse 2.
When removing the, in the socket 16 provided in the base 1,
By inserting the plug 15, the bypass means is configured, the fuse 2 can be removed without losing the power of a healthy electric circuit, and the short-circuit protection lead wire 10 can protect the circuit of the electric circuit.

(Ninth Embodiment) FIG. 9 is a block diagram showing a ninth embodiment according to the present invention. In FIG.
The same functional parts as those in FIG. 7 are designated by the same reference numerals and the description thereof will be omitted. The difference between the present embodiment and FIG. 7 lies in the plug 15, and in this plug 15, the plug pins 15d and 15b are connected by the short-circuit protection conducting wire 19. Other configurations are the same as those in FIG. 7.

According to the present embodiment, the electric circuit in the energized state is protected by the fuse 2.
When removing the, in the socket 16 provided in the base 1,
By inserting the plug 15, the bypass means is configured, the fuse 2 can be removed without losing the power source of a healthy electric circuit, and the short-circuit protection lead wire 19 of the plug 15 can protect the electric circuit. .

[0048]

As described above, according to the present invention, when the fuse is removed while the electric circuit is energized, the socket and the plug of the bypass means for bypassing the fuse allow
The fuse can be removed without losing power to the electrical circuit. Further, according to the present invention, the circuit configuration is extremely simple and practically effective.

[Brief description of drawings]

FIG. 1 is an external view and a circuit configuration diagram of a fuse holder according to a first embodiment of the present invention.

FIG. 2 is an external view and circuit configuration diagram of a fuse holder according to a second embodiment of the present invention.

FIG. 3 is an external view and a circuit configuration diagram of a fuse holder according to a third embodiment of the present invention.

FIG. 4 is an external view and circuit configuration diagram of a fuse holder according to a fourth embodiment of the present invention.

FIG. 5 is an external view and circuit configuration diagram of a fuse holder according to a fifth embodiment of the present invention.

FIG. 6 is an outline and circuit configuration diagram of a fuse holder according to a sixth embodiment of the present invention.

FIG. 7 is an external view and circuit configuration diagram of a fuse holder according to a seventh embodiment of the present invention.

FIG. 8 is an external view and a circuit configuration diagram of a fuse holder according to an eighth embodiment of the present invention.

FIG. 9 is an external view and circuit configuration diagram of a fuse holder according to a ninth embodiment of the present invention.

FIG. 10 is an external view and circuit configuration diagram of a conventional fuse holder.

[Explanation of symbols]

1 fuse holder 2 fuse 3a, 3b clip conductor 4a, 4b connection terminal 5 push button switch 5a push button 6a to 6d contact terminals 7a, 7b, 14a, 14b output terminals 8a-8d, 17a, 17b Conductive wire 9a, 9b Auxiliary connection terminal 10, 19 Short circuit protection conductor 11 link bars 12a, 12b Elastic conductor 13a, 13b conductor 15,23a, 23b plug 15a-15d Plug pin 16, 16a-16d, 24a, 24b socket 20a, 20b clip terminals 21 connection line

Claims (4)

[Claims] 1. A fuse holder comprising a fuse for protecting a circuit of an electric circuit, a clip conductor for connecting the fuse to an electric circuit, and a connection terminal for connecting the clip conductor to an external line. A bypass means for bypassing the fuse is configured, and as the bypass means, a socket or an auxiliary connection terminal is provided between the clip conductors at both ends and a connection terminal, and short-circuit means for short-circuiting the socket or the auxiliary connection terminal is provided. Fuse holder. 2. A fuse holder comprising a fuse for protecting a circuit of an electric circuit, a clip conductor for connecting the fuse to the electric circuit, and a connection terminal for connecting the clip conductor to an external line. A bypass means for bypassing the fuse, wherein the bypass means includes a push button switch that is interlocked with attachment and detachment of the fuse, and a lead wire or a short-circuit protection lead wire that connects the push button switch and a connection terminal. Characteristic fuse holder. 3. A fuse holder comprising a fuse for protecting a circuit of an electric circuit, a clip conductor for connecting the fuse to the electric circuit, and a connection terminal for connecting the clip conductor to an external line. A bypass means for bypassing the fuse is configured, and the bypass means is a link rod that is interlocked with attachment and detachment of the fuse, an elastic conductor combined with the link rod, and a conductor or a short circuit that connects the elastic conductor and the connection terminal. A fuse holder provided with one of protective conductors. 4. A fuse holder comprising a fuse for protecting a circuit of an electric circuit, a clip conductor for connecting the fuse to the electric circuit, and a connection terminal for connecting the clip conductor to an external circuit. A bypass means for bypassing the fuse is configured, and the bypass means includes a socket connected to each connection terminal by a conductive wire, a plug for connecting to the socket, and a conductive wire connecting a plug pin of the plug and a plug pin. A fuse holder that is equipped with.