JP2000218070A - Tool for opening hole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tool for opening a hole capable of easily and safely opening the hole on an object which is the object of opening the hole like the case of discharging gas from a filled object filled with high pressure gas. SOLUTION: This tool 20 for opening the hole is provided with a blade part 21 provided with a sharp tip part in an acute angle shape and a pressing part 22 provided with a recessed part 24 for positioning the object for clamping and pressing the object together with the blade part 21. The tip part of the blade part 21 faces the recessed part 24, and when the tip part of the blade part 21 and the recessed part 24 are brought closest, the tip part of the blade part 21 is positioned near the recessed part 24 so as not to be in contact with the bottom part of the recessed part 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drilling tool used for discharging gas when a lamp or the like containing high-pressure gas is discarded.

[0002]

2. Description of the Related Art As an example of a device in which high-pressure gas is sealed,
There is a spray can. FIG. 10 shows a spray can used in ordinary households and a degassing tool for discharging gas from the spray can (so-called degassing). As shown in FIG. 10, the degassing tool 2 includes a spray can 1
And a holding portion 4 for holding the spray can 1. As shown in FIG. 11, the spray can 1 is held between the blade portion 3 and the holding portion 4 and the grip portion 5 is gripped to make a hole in the spray can 1 and to vent the gas.

FIG. 12 shows another example of a degassing tool. The degassing tool 2 'shown in FIG.
And a suction cup 6 for holding the spray can 1. As shown in FIG. 13, the spray can 1 is held between the blade portion 3 and the suction cup 6, and the gripping portion 5 is gripped to make a hole in the spray can 1 and to release gas.

Another example of a high-pressure gas that must be sealed and degassed when disposed is a lamp used in a projector device or the like. This type of lamp encloses a high-pressure gas of about 30 kg / cm ² .
If the light intensity of the lamp decreases or a defect occurs,
New lamps need to be replaced and old used lamps need to be vented and discarded.

FIG. 14 is a perspective view showing an example of a lamp used in a projector device or the like, and FIG. 15 is a side view thereof. As shown in FIG. 14 and FIG.
Numeral 0 has a projection 11 for venting gas. The degassing projection 11 has a significantly smaller diameter than the spray can 1, and
Since it is robust, the above general degassing tool 2,
In 2 ', the lamp 10 cannot be vented.
Therefore, using the end nippers 12 as shown in FIG. 16, the gas release projections 11 are cut and the gas is released as shown in FIG.

[0006]

However, in the conventional method of degassing the lamp 10 using the end nipper 12, the broken pieces of the degassing projections 11 may fly,
There is a problem that the high-pressure gas is instantaneously discharged and a loud noise is generated. Therefore, when discarding the lamp 10 provided with the degassing projections 11, it is desirable to vent the gas by forming holes in the degassing projections 11 without cutting the degassing projections 11. In the past, no suitable tool was found.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is possible to easily and safely apply an object to be drilled, such as a case where gas is discharged from an enclosure containing high-pressure gas. An object of the present invention is to provide a drilling tool capable of drilling holes. It is another object of the present invention to provide a drilling tool that allows an operator to easily know that a hole has been formed in an object to be drilled.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the prior art, the present invention sandwiches an object (11) to be drilled and cuts a hole without cutting the object. In a drilling tool for drilling, a cutting part (21) having a sharp pointed tip and a concave part (24) for positioning the object are provided, and the object is sandwiched between the blade and the object. A holding portion (22) for holding an object, wherein a tip of the blade portion faces the concave portion, and when the tip portion of the blade portion and the concave portion are closest to each other, the tip portion of the blade portion is the concave portion. A drilling tool, wherein the drilling tool is configured so as to be positioned near the recess so as not to contact the bottom of the hole. Further, in addition to this configuration, there is provided a drilling tool including a sounding body (25) which is provided on the blade portion by a gas flow discharged when a hole is formed in the object.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A drilling tool according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view showing one embodiment of the drilling tool of the present invention, FIG. 2 is a partial front view showing one embodiment of the drilling tool of the present invention, and FIG. 3 is one embodiment of the drilling tool of the present invention. FIG. 4 is a partial front view showing another embodiment of the drilling tool of the present invention. FIG. 5 is a partial side view showing another embodiment of the drilling tool of the present invention. 7 is a perspective view showing a use example of the drilling tool of the present invention, FIG. 8 is a perspective view showing still another embodiment of the drilling tool of the present invention, and FIG. 9 shows the effect of the other embodiment shown in FIG. It is a side view for explaining.

As shown in FIG. 1, a drilling tool 20 according to the present invention has the same overall structure as the end nipper 12 shown in FIG.
The portion of the cutting edge that comes into contact with 1 is greatly different from the end nipper 12. The drilling tool 20 includes an acute-angled blade portion 21 for drilling a hole in the degassing projection 11, and a blade portion 21.
And a holding portion 22 for holding the degassing projection 11 together with
It has a grip 23 that closes or opens the gap between the sharp blade 21 and the presser 22.

Further, a concave portion 24 for positioning the degassing projection 11 is formed in the pressing portion 22. Since the degassing projection 11 has a cylindrical shape, the concave portion 24 has a substantially arc shape corresponding to the shape of the degassing projection 11. Depressed projections 11 due to recess 24
When the hole is formed between the blade portion 21 and the holding portion 22, the hole of the gas venting projection 11 is not shifted when the gas venting projection 11 is opened.

Next, a detailed configuration of the blade portion 21 and the holding portion 22 will be described. As shown in FIG. 2, the tip of the blade 21 is sharp, and the tip of the blade 21 is located substantially at the center of the recess 24 in the width direction. The tip of the holding part 22
Except for the recess 24, the top 22a is substantially straight. As shown in FIG. 3, when the drilling tool 20 is viewed from the side, the tip portion (the top portion 22 a) of the holding portion 22 also has an acute angle.

When the blade portion 21 and the holding portion 22 are closed,
When the drilling tool 20 is viewed from the side, the tip portion of the blade portion 21 and the top portion 22a of the pressing portion 22 have a positional relationship such that they are substantially in contact on a reference line L which is a center line. However, in practice, since the tip of the blade portion 21 faces the concave portion 24, even when the grip portion 23 is closed and the blade portion 21 and the press portion 22 are closest to each other, the blade portion 21 and the press portion It does not contact the part 22.

In other words, this means that the drilling tool 20 of the present invention can make a hole in the degassing projection 11 but cannot cut it. Blade 2
The length of the first end may be such that it slightly enters the recess 24 beyond the top 22a, but it is necessary that the length is such that it does not contact the bottom of the recess 24. Blade 2
When the pressing portion 1 and the pressing portion 22 are closest to each other, the edge portion of the blade portion 21 may be positioned near the concave portion 24 so that the distal end portion does not contact the bottom of the concave portion 24.

In the embodiment of FIGS. 2 and 3, the bottom of the recess 24 and the reference line L have an angle of θ °, as shown in FIG. With respect to the pressing direction of the object (degassing projection 11),
It is inclined so as to be more distant from the blade portion 21 as the distance from the grip portion 23 increases. The tip of the bottom of the recess 24 on the side of the tip of the blade 21 also has an acute angle. Blade 2
1 is slightly displaced in the direction intersecting with the pressing direction (direction along the reference line L) and has an interval A, so that the gas is vented. The cutting of the projection 11 is more effectively prevented.

In this embodiment, since the tip of the bottom of the concave portion 24 is also acute-angled, the vent 11 is easily cracked, and the vent 11 can be easily drilled. If it is not possible to make a hole in the degassing projection 11 simply by grasping the gripping part 23, the drilling tool 20 can be repeatedly moved back and forth to form the degassing projection 1.
1 causes fatigue fracture and can easily drill holes.

The embodiment shown in FIGS. 2 and 3 is a preferred embodiment, but may be constructed as shown in FIGS. 4 and 5, the bottom of the recess 24 is parallel to the reference line L. 2 and 3 in this configuration as well.
In the same manner as in the embodiment, a hole can be easily formed in the degassing projection 11. However, when it is not possible to make a hole in the degassing projection 11 only by grasping the gripping portion 23, if the hole is made in the degassing projection 11 by repeatedly moving the drilling tool 20 back and forth, the concave portion 24 is formed. In some cases, a slip may occur at the bottom of the gas vent and the gas venting projection 11 may not be easily cracked. Therefore, it can be said that the embodiment shown in FIGS. 2 and 3 is more preferable.

An example of the use of the drilling tool 20 of the present invention will be described with reference to FIGS. 6 and 7, reference numeral 100 denotes a lamp unit that houses the lamp 10 shown in FIGS. The lamp unit 100 is mounted on the projector device. As shown in FIG. 6, the degassing projection 11 of the lamp 10 projects outside. FIG. 6 also shows an enlarged view of a portion of the projection 11 for degassing.

When the lamp unit 100 is replaced,
A hole is formed in the degassing projection 11 of the used old lamp unit 100 (lamp 10) by the drilling tool 20, the gas is vented and discarded. As shown in FIGS. 6 and 7, the degassing projection 11 is sandwiched by the drilling tool 20, and the gripping portion 23 is gripped. In some cases, the drilling tool 20 is repeatedly moved back and forth, and Drill holes and degas.

FIG. 8 shows a drilling tool 2 according to another embodiment.
0 'is shown. When the lamp 10 is degassed by the aforementioned drilling tool 20, it may be difficult for an operator to confirm that a hole has been formed in the degassing projection 11. FIG.
Is improved so that an operator can easily know that an object to be drilled has a hole. In the drilling tool 20 'shown in FIG. 8, the same portions as those of the drilling tool 20 shown in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

In FIG. 8, a blade 21 has a sounding body 25 attached thereto.
Is provided. By attaching the sounding body 25 to the drilling tool 20 shown in FIG. 1 by welding or bonding, a drilling tool 20 'can be formed. That is, the drilling tool 20 shown in FIG. 1 and the drilling tool 20 ′ shown in FIG. The sounding body 25 has openings 25a at both ends as an example.
This is a pipe-shaped whistle having 25b, and has a vibrating body (not shown) inside. Opening 25 on the tip side of sounding body 25
a is located near the distal end of the blade portion 21 and
5 is attached along the inclined surface of the blade 21. A hole 25c is formed in the middle of the sounding body 25 in the longitudinal direction.

Using this drilling tool 20 ', the lamp 1
In the case where a hole is formed in the projection 11 for degassing and the gas is released, as shown in FIG.
It enters inside and exits through the opening 25b as indicated by the arrow. Note that FIG. 9 shows the lamp 10 in a state in which a portion of the degassing projection 11 is broken. At this time, since the sounding body 25 emits a sound, the operator can easily confirm that the gas venting projection 11 has a hole. The sounding body 25 is not limited to a pipe-shaped whistle, and may have any configuration as long as it can be sounded by a gas flow discharged when a hole is formed in an object.

In the present embodiment described above, the drilling tools 20 and 20 'are gas releasing tools for forming holes in the gas releasing projections 11 of the lamp 10 to discharge gas. Needless to say, it may be used for drilling for the purpose.

[0024]

As described above in detail, the drilling tool according to the present invention comprises a blade having a sharp pointed tip,
It has a concave portion for positioning an object to be drilled, and a holding portion for holding the object with the blade portion sandwiched between the blade portion, the tip portion of the blade portion faces the concave portion, and the tip portion of the blade portion. When the concave portion is closest to the concave portion, the tip portion of the blade portion is located near the concave portion so that it does not contact the bottom portion of the concave portion. A hole can be easily and safely drilled in an object to be drilled. In addition, since the sounding body that is generated by the gas flow discharged when the target object has a hole is provided in the blade portion, the operator can easily know that the target object has a hole.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a partial front view showing one embodiment of the present invention.

FIG. 3 is a partial side view showing one embodiment of the present invention.

FIG. 4 is a partial front view showing another embodiment of the present invention.

FIG. 5 is a partial side view showing another embodiment of the present invention.

FIG. 6 is a perspective view showing a usage example of the present invention.

FIG. 7 is a perspective view showing a usage example of the present invention.

FIG. 8 is a perspective view showing still another embodiment of the present invention.

FIG. 9 is a side view for explaining effects of the other embodiment shown in FIG. 8;

FIG. 10 is a perspective view showing a conventional example.

FIG. 11 is a perspective view showing a drilling method according to the conventional example shown in FIG.

FIG. 12 is a perspective view showing another conventional example.

FIG. 13 is a side view showing a hole making method according to another conventional example shown in FIG.

FIG. 14 is a perspective view illustrating an example of a lamp used in the projector device.

FIG. 15 is a side view illustrating an example of a lamp used in the projector device.

FIG. 16 is a perspective view showing an end nipper.

FIG. 17 is a side view showing a conventional method for degassing a lamp using an end nipper.

[Explanation of symbols]

 20, 20 'Drilling tool 21 Blade part 22 Pressing part 23 Gripping part 24 Depression 25 Sounding body

Claims (4)

[Claims] 1. An object to be drilled is sandwiched,
In a drilling tool for drilling a hole without cutting the object, a blade having a sharp-pointed tip, a concave portion for positioning the object, and the object together with the blade A holding portion for sandwiching and holding the object, a tip of the blade facing the recess, and when the tip of the blade and the recess are closest, the tip of the blade is A drilling tool, wherein the drilling tool is configured so as to be located near the recess so as not to contact the bottom of the recess. 2. A bottom of the recess is inclined with respect to a direction in which the blade presses the object, and a tip of the bottom of the recess on the blade side has an acute angle. The drilling tool according to claim 1, wherein 3. The drilling tool according to claim 2, wherein the tip of the blade and the tip of the bottom of the recess on the side of the blade are shifted in a direction intersecting with the pressing direction. . 4. A drilling device according to claim 1, wherein said blade portion is provided with a sounding body which emits a sound by a gas flow discharged when said object has a hole. tool.