JP2593321Y2 - Removal tool for cylindrical fuse - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool for removing a cylindrical fuse from a fuse holder.

[0002]

2. Description of the Related Art Usually, an insulation test is performed once a year as one of maintenance work of an elevator. At the time of this insulation test, it is necessary to remove the cylindrical fuse from the fuse holder in order to cut off the power supply. As a method for removing the cylindrical fuse, conventionally, the thumb and the forefinger strongly grip the glass part of the cylindrical fuse, and in this state, the cylindrical fuse is pulled out from the fuse holder.

As a tool for removing a fuse, for example, Japanese Utility Model Application Laid-Open No. 60-3637 and Japanese Utility Model Application Laid-Open No. 62-1491.
No. 45 publication can be mentioned.

[0004]

In the above-mentioned conventional method, a relatively large pulling force of 2.8 to 3.2 kg is required to remove the cylindrical fuse from the fuse holder. And the glass part of the cylindrical fuse is gripped and the above-described pulling force is applied, so that the glass part may be broken.

The present invention has been made in view of the above-mentioned problems, and has as its object to provide a tool for removing a cylindrical fuse from which a cylindrical fuse can be easily removed from a fuse holder without requiring a large pulling force. To provide.

[0006]

SUMMARY OF THE INVENTION In order to achieve this object, the present invention provides a tubular fuse having ends respectively held by holding portions of a fuse holder, and a glass portion provided between the ends. in removal tool of the tubular fuse removed from the fuse holder, the whole single plate
Consists Jo body, at one end side, first to form an insertion portion to be inserted between the fuse holder and the glass unit 1
L-shaped bent piece and the end of the end of the cylindrical fuse
A second L-shaped bent piece forming a contact portion contacting the
Having a gripping part on the other end side,
A first L-shaped bent piece and the second L-shaped bent piece
The installation interval between the fuses can be accommodated,
The configuration is such that the dimension interval is set equal to the outer diameter dimension of the cylindrical fuse .

[0007]

Since the present invention is constructed as described above, when removing the cylindrical fuse from the fuse holder, an insertion portion is provided between the glass part of the cylindrical fuse and the fuse holder.
While inserting the first L-shaped bent piece to be formed ,
Forming a contact portion at the tip of the end of the cylindrical fuse ;
It is brought into contact with the L-shaped bent piece, then the worker gripping
When a force is applied to the insertion portion with the contact portion as a fulcrum in a direction away from the fuse holder, the cylindrical fuse is rotated about one end by the insertion portion. Therefore, only one end of the cylindrical fuse is removed from the holding portion of the fuse holder. Thereafter, a force is applied by gripping the cylindrical fuse, and the other end of the cylindrical fuse is pulled out from another holding portion. Present invention
Now, with the fulcrum, that is, the second L-shaped bent piece
The contact part with the cylindrical fuse is separated from the substrate of the fuse holder.
End of the cylindrical fuse located on the side
Point of action for applying force to the fuse, ie, the first L-shape
The bent piece is located on the opposite side of the grip, with the fulcrum sandwiched,
Of the first L-shaped bent piece and the second L-shaped bent piece
The installation interval can accommodate cylindrical fuses, and almost
That the spacing is set to be equal to the outer diameter of the
The work is immediately carried out by rotating the gripper,
That is, the removal work of the cylindrical fuse is started immediately,
Therefore, a relatively small rotation angle is required to remove the cylindrical fuse.
It only needs degrees. As described above, in the present invention, the cylindrical fuse is detached from the holding portion by using the leverage, so that the cylindrical fuse can be easily removed without requiring a large pulling force.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a cylindrical fuse removing tool according to an embodiment of the present invention; FIG. 1 is a perspective view showing one embodiment of a tool for removing a cylindrical fuse of the present invention, FIG. 2 is a front view showing a state in which the tool for removing of FIG. 1 is mounted on a cylindrical fuse and a fuse holder, and FIG. FIG. 4 is a side view showing a state in which the cylindrical fuse is removed from the fuse holder by the removal tool.

Generally, the cylindrical fuse 20 is shown in FIGS.
As shown in the figure, metal parts 21 and 22 provided at both ends
And a glass part 23 formed between the metal parts 21 and 22.
The fuse holder 30 to which the “0” is attached is provided with holding portions 31 and 32 for holding the metal portions 21 and 22, respectively.

As shown in FIG. 1, the cylindrical fuse removing tool of the present embodiment has an insertion portion inserted between the glass portion 23 of the cylindrical fuse 20 and the fuse holder 30;
Sand first and L-shaped bent piece 1 Wachi, tubular fuse 2
The plate-like body 4 includes a contact portion that abuts on the tip of the end of the metal portion 22, that is, the second L-shaped bent piece 2, and a grip portion 3 that is gripped by an operator. Have been. Further, for example, the total length of the above-mentioned plate-like body 4 is 5
0 mm, width 25 mm, thickness 2 mm, width of the first L-shaped bent piece 1 is 15 mm, second L-shaped bent piece 2
Is set to 9 mm . The first L-shaped bent piece 1 and the second spacing between the L-shaped bent piece 2, cylindrical
Fuse 20 can be accommodated, almost outside of cylindrical fuse 20
Set the dimension interval to the same as the diameter dimension, for example, 10 mm.
Thus , the bending amount of the first L-shaped bent piece 1 and the second L-shaped bent piece 2 is set to 13 mm.

In this embodiment, when the cylindrical fuse 20 is removed from the fuse holder 30 during the insulation test,
As shown in FIG. 2, the first L-shaped bent piece 1 is inserted between the glass part 23 of the cylindrical fuse 20 and the fuse holder 30, and the second L-shaped bent piece 2 is inserted into the metal of the cylindrical fuse 20. It contacts the upper end of the part 22. Next, the operator grasps the grasping portion 3 and rotates the plate-like body 4 with the contact point between the second L-shaped bent piece 2 and the metal portion 22 as a fulcrum, as shown in FIG. L-shaped bent piece 1
To the fuse holder 30. As a result, the cylindrical fuse 20 is rotated about one end, so that only the metal portion 21 of the cylindrical fuse 20 is removed from the holding portion 31 of the fuse holder 30. In the insulation test, the power is cut off with the metal portion 22 of the cylindrical fuse 20 held by the holding portion 32 as described above. On the other hand, when completely removing the cylindrical fuse 20 from the fuse holder 30, the cylindrical fuse 20 is gripped from the state where only the metal part 21 of the cylindrical fuse 20 is removed from the grip part 31 of the fuse holder 30 as described above. The metal part 22 of the cylindrical fuse 20
Is pulled out from the holding portion 32.

In the embodiment configured as described above, the lever support is provided.
Point, that is, second L-shaped bent piece 2 and cylindrical fuse
20 comes into contact with the substrate of the fuse holder 30
The end of the end of the cylindrical fuse 20 located on the side
The point of action that applies a force to the fuse 20 , ie, the first L
The bent piece 1 is located on the opposite side of the grip 3
Positioning the first L-shaped bent piece 1 and the second L-shaped folded
The installation interval with the bending piece 2 can accommodate the cylindrical fuse 20
And a dimension interval substantially equal to the outer diameter dimension of the cylindrical fuse 20
Since the gripping portion 3 is rotated,
The work is carried out immediately, ie the removal of the cylindrical fuse 20.
The unloading operation is started immediately, so that the cylindrical fuse 2
It takes only a relatively small rotation angle to remove 0,
I'm sorry. Further, since the cylindrical fuse 20 is removed from the holding portion 31 by utilizing the leverage, a large pulling force is not required,
The tubular fuse 20 can be easily removed. Also,
As described above, the power supply is cut off and the insulation test is performed with only the metal portion 22 of the cylindrical fuse 20 being held by the holding portion 32, so that the metal portion 22 is returned to the normal state after the insulation test is completed. It is only necessary to re-attach to the holding portion 31. As a result, since there are usually nine types of cylindrical fuses having different capacities, it has conventionally been necessary to perform a work of judging a fuse when returning to a normal state. Therefore, it is possible to prevent a fuse having a different capacity from being attached by mistake.

[0013]

[Effect of devised the present invention is so constructed as described above, Te
This fulcrum, that is, the second L-shaped bent piece and the cylindrical hull
Contact with the fuse on the side of the fuse holder away from the substrate
The tip of the end of the cylindrical fuse located
The point of action that exerts a force on the coil, ie, the first L-shaped bend
The first piece is located on the opposite side of the grip portion with respect to the fulcrum, and the first L
Installation interval between the L-shaped bent piece and the second L-shaped bent piece
Can accommodate a cylindrical fuse, almost outside the cylindrical fuse
Since it is set to the same dimension interval as the diameter dimension,
By rotating the part the work is carried out immediately, ie
Removal work of the cylindrical fuse is started immediately, and accordingly
A relatively small rotation angle is required to remove the cylindrical fuse.
It is easy to work. Also, without the need for a large pull-out force,
The tubular fuse can be easily removed and therefore
The glass part can be prevented from breaking, and workability can be improved. Further, when the tubular fuse removal, it is possible to state that is sandwiched only one end of the tubular fuse to the clamping of the fuse holder, it is possible to perform an insulation test in this state
it can. When returning to the normal state after the insulation test is completed
Is sufficient to attach the other end of the cylindrical fuse without the necessity of a fuse discriminating operation, so that there is also an effect that it is possible to prevent a fuse having a different capacity from being erroneously attached at the end of the insulation test. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a tool for removing a cylindrical fuse of the present invention.

FIG. 2 is a front view showing a state in which the removal tool of FIG. 1 is mounted on a cylindrical fuse and a fuse holder.

FIG. 3 is a side view showing a state where the cylindrical fuse is removed from the fuse holder by the removal tool of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st L-shaped bent piece (insertion part) 2 2nd L-shaped bent piece (contact part) 3 Gripping part 4 Plate 20 Cylindrical fuse 21, 22 Metal part 23 Glass part 30 Fuse holder 31, 32 Clamping section

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 56-18650 (JP, U) Japanese Utility Model Sho 56-100860 (JP, U) Japanese Utility Model Sho 59-4156 (JP, U) (58) Field (Int.Cl. ⁶ , DB name) H01H 85/02 H01H 85/22

Claims (1)

(57) [Scope of request for utility model registration] And 1. A end is respectively clamped by clamping of the fuse holder, the removal tool of the tubular fuse to remove the tubular fuse from the fuse holder and a glass portion provided between the ends, the whole But one
A plate-like body having an insertion portion to be inserted between the glass portion and the fuse holder on one end side .
1 L-shaped bent piece and the end of the end of the cylindrical fuse
A second L-shaped bent piece forming a contact portion abutting on an end
And a grip on the other end side, and
The first L-shaped bent piece and the second L-shaped bent
The installation interval between the pieces can be adjusted to accommodate the cylindrical fuse.
A tool for removing a cylindrical fuse, wherein the interval is set to be equal to the outer diameter of the cylindrical fuse.