JP2000108055A - Connecting-type steel lever - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate handling such as portage, transportation, housing of a steel lever. SOLUTION: This connecting-type steel lever is provided with one metallic rod member 20 composed of an end body 22 fixed to the metallic rod, and a thread part fixed to the other end; and a metallic rod member 30 composed of an end body 32 fixed to the metallic rod, a thread part fixed to the inside of the other end, and a connecting pipe 35 fixed to the outer side. The screw parts are integrated with each other by being engaged and screwed. Accordingly, a connecting-type steel lever is divided into one metallic rod member 20 and the other metallic rod member 30, the length is made to the half length of the conventional one, and therefore, handling such as portage, transportation, and housing is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an iron lever.
The present invention relates to a connection type iron lever having a function of a crowbar and an iron lever, and more particularly to a connection type iron lever which can be used by being connected and which can be disassembled and stored.

[0002]

2. Description of the Related Art In a conventional iron lever of this type, a bar portion and an iron lever are integrally formed. The longer the overall length, the greater the power that can be obtained by using it as a lever.

[0003]

However, since the conventional iron lever is integrally formed as described above, the entire length of the iron lever must be increased in order to generate a large force when used as a lever. Was. Therefore, handling such as carrying, transporting, or storing is inconvenient.

Accordingly, an object of the present invention is to provide a connection-type iron lever which facilitates handling such as carrying, carrying, and storing.

[0005]

According to a first aspect of the present invention, there is provided a connection type iron lever, comprising: an end portion provided at one end of a metal rod; and a screw provided at the other end of the metal rod. The other metal rod member comprising: a metal rod member formed of a metal rod member; an end member provided at one end of the metal rod and having a different form from the end member; and a screw portion provided at the other end of the metal rod member. And a connecting pipe including the threaded portion fixed to the outer periphery of either the one metal rod or the other metal rod, wherein the threaded portion of the one metal rod and the threaded portion of the other metal rod are provided. The screw part is screwed and integrated into the connecting pipe.

According to a second aspect of the present invention, there is provided a connection type iron lever, wherein the outer diameter of the metal rod is larger than the outer diameter of the screw portion, and the inner circumference of the connecting pipe provided on the outer circumference of the metal rod on the opening side. Have at least a portion closely contacted with the outer diameter of the metal rod.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing an entire connection type iron lever according to the first embodiment of the present invention. FIG. 2 is a perspective view of one metal rod member 30 of FIG. FIG. 3 is a perspective view of the other metal rod member 20 of FIG. FIG. 4 is an enlarged cross-sectional view showing a screwed state of one metal rod member 30 and the other metal rod member 30 in FIG. FIG. 5 is an enlarged sectional view of the vicinity of the screw portion 34 of the other metal rod member 30 in FIG. FIG. 6 is an enlarged sectional view of the vicinity of the screw portion 24 of the one metal rod member 20 of FIG.

In FIG. 1, the connection type iron lever according to the present embodiment has an end portion 22 having a substantially flat tip portion used for pulling out a nail or opening a hole, and roughly functions as a burl. One metal rod member 20 (see FIG. 3)
And a metal rod member 30 (see FIG. 2) having an end body 32 having a sharp conical sharp tip and functioning as an iron lever.

The metal rod member 20 functioning as a burl is
An end 22 having a substantially flat tip formed by bending special steel by forging is fixed to the tip of a metal rod 21 made of a steel pipe by welding, and a female screw 24 is attached to the other end of the metal rod 21. Is inserted into the inside of the pipe of the metal rod 21, and the outer periphery of the pipe is fixed to one or two or more filaments by welding (the welding location is not shown, the same applies hereinafter),
A fitting hole 27 penetrating through the metal rod 31 is formed. Here, the end body 22 having a substantially flat tip is
It is sufficient that the bur has a function of being able to be inserted into a gap and to be opened, rather than a function of pulling out a crowbar. When the present invention is implemented, it is assumed that the bur has a form used as a nail puller. is not.

The metal rod member 30 having a sharp conical tip is provided with a conical tip formed by forging special steel at the tip, and an end member 32 functioning as an iron lever is fixed by welding. At the other end of the metal rod 31, a screw portion 33 having an external thread 34 is inserted inside the pipe of the metal rod 31, and the outer periphery of the pipe is welded and fixed to one or more lines. I have. Further, at one end of the metal rod 31, the connecting pipe 35 is fixed by welding the outer periphery of the pipe of the metal rod 31 to one or two or more filaments, and the screw part 33 having the external thread 34 is provided inside. By wrapping, the external thread 3
No. 4 screw thread is protected from being crushed by external force. Further, a fitting hole 37 penetrating the connected connecting pipe 35 and the metal rod 31 is provided.

The end portion 32 having a tip portion formed by forging a special steel into a conical shape at the tip end of the metal rod 31 by using a weight of the metal rod 31 and the metal rod 31 and the like, further reduces external force. In addition, it is used to intensively apply weight to a part of concrete, block, glass, or the like to break it.

The length and thickness of the metal rod member 20 functioning as a crowbar are appropriately determined according to the strength of the connection-type iron lever 10, that is, how much force can be generated when the lever is used as a lever. Incidentally, assuming that the strength is the same as the conventional one, the entire length of the metal rod member 20 functioning as a burl and the metal rod member 30 functioning as an iron lever may be the same as the conventional length. , Metal rod member 20
And the length of each of the metal rod members 30 may be about ２ of the conventional length.

The turning hole 27 of the metal rod member 20 and the turning hole 37 of the metal rod member 30 are respectively screwed, that is,
When screwing or releasing the screw portion 23 and the screw portion 33, a driver, a pliers handle or the like is inserted into the fitting hole 27 and the fitting hole 37, and the screwdriver and the pliers are inserted. By rotating the handle or the like, the distance from the center to which the torsional force is applied is increased, so that a large tightening force or a releasing force can be obtained.

The thus constructed connection type iron lever 10 of the present embodiment is generally composed of a metal rod member 20 functioning as a burl and a metal functioning as an iron lever because of its easy handling such as transportation or storage. The connection type iron lever 10 according to the present embodiment is moved separately without being connected to the rod member 30.
When using as a part of the rescue set,
It is carried with another rescue set such as this scoop, or stored in a rescue set storage box or the like. That is, the metal rod member 20 and the metal rod member 30 are always used as a pair.

Then, at a work site requiring an iron lever or a burl, the screw portion 23 of the metal rod member 20 is inserted into the connecting pipe 35 of the metal rod member 30, and the male screw 34 of the screw portion 33 and the female screw of the screw portion 23 are inserted. By screwing the male screw 24 with the male screw 34 and the female screw 24, the metal rod member 20 and the metal rod member 30 can be integrated. At this time, if it is desired to further increase the tightening force, the metal rod member 2
0 fitting hole 27 and fitting hole 37 of metal rod member 30,
When the driver or the like is inserted and the driver is turned and tightened, the metal rod member 20 and the metal rod member 30 can be more strongly integrated.

The insertion portion 26 on the outer periphery of the metal rod 21 is
The metal rod member 30 is fitted to the inner peripheral surface of the fitting portion 36 on the inner periphery of the connecting pipe 35. The metal rod member 20 and the metal rod member 30 can interfere with each other due to the curvature of the metal rod member. The connection between the metal rod member 20 and the metal rod member 30 is assisted, and the engagement between the male screw 34 of the screw part 33 and the female screw 24 of the screw part 23 can be compensated. That is, the insertion portion 26 on the outer periphery of the metal rod 21 and the fitting portion 36 on the inner periphery of the connecting pipe 35 constitute auxiliary connection means of the present embodiment.

As described above, the metal rod member 20 and the metal rod member 30 are integrally connected to each other so that the entire length can be increased. When the strength to be used, that is, when the levering force is small, the metal rod member 20 or the metal rod member 30 is not connected without integrally connecting the metal rod member 20 and the metal rod member 30.
It is also possible to use it alone.

Next, an embodiment of a connecting portion between the metal rod member 20 and the metal rod member 30 will be described. In each embodiment, only differences from the above-described embodiment will be described, and the same components as those in the above-described embodiment will be denoted by the same reference numerals and numbers, and description thereof will be omitted.

FIG. 7 is an enlarged sectional view showing a fitting form of the metal rod member 30 and the metal rod member 20 of the connection type iron lever according to the second embodiment of the present invention. FIG. 8 is an enlarged sectional view of the vicinity of the screw portion 33 of the metal rod member 30 of FIG. 7, and FIG.
FIG. 4 is an enlarged cross-sectional view of the vicinity of a No. 0 screw part 23.

7 to 9, a metal rod 21 having a tapered outer periphery at the tip is a metal rod member 3 of a steel pipe.
The tapered insertion portion 26a is formed into a tapered shape of about 8 to 10 degrees by making the tip portion fitting with 0 larger in diameter than the screw portion 23. The tapered fitting portion 36a on the inner periphery of the connecting pipe 35a of the metal rod member 30 fitted to the tapered outer surface is formed into a tapered shape having the same angle as the insertion portion 26a,
When the male screw 34 of the screw part 33 and the female screw 24 of the screw part 23 are screwed together, the metal rod 2 is fitted to the fitting part 36a of the connecting pipe 35a.
One insertion portion 26a is inserted, and the metal rod member 20 and the metal rod member 30 are integrally connected by these tapered portions. In addition, the taper of the tapered insertion portion 26a and the tapered fitting portion 36a was performed at about 8 to 10 degrees.
When practicing the present invention, it can be realized with a taper of about 5 to 60 degrees.

As described above, the metal rod member 2 is fastened by screwing.
The portion where the external force applied to the connection portion of the metal rod 30 and the metal rod member 30 concentrates is dispersed, and the tapered surfaces of the tapered fitting portion 36a of the connecting pipe 35a and the tapered insertion portion 26a of the metal rod 21 are in contact with each other. The metal rod 2
0 and the metal rod member 30 are more strongly and integrally fixedly connected. Therefore, even when a large force is applied when the connection-type iron lever 10 is used as a lever or the like, the possibility that the connection portion is loosened and play is extremely reduced. In addition, since the tapered surfaces are in surface contact with each other, the bonding does not become incomplete due to the flaws on the contact surface even if the connection is disassembled many times.

In this embodiment, the metal rod 21
The two joining portions of the insertion portion 26a and the fitting portion 36a of the connecting pipe 35a of the metal rod 31 are formed in a tapered shape, but only one of them is formed in a tapered shape and fixed on this tapered surface. If it does, there will be no play at the connection.
The insertion portion 26a on the outer periphery of the metal rod 21 and the connecting pipe 3
The fitting portion 36a on the inner periphery of 5a constitutes the auxiliary connection means of the present embodiment.

Further, another embodiment of the connection portion between the metal rod member 20 and the metal rod member 30 will be described.

FIG. 10 is an enlarged sectional view showing a fitting state of the metal rod members 30 and 20 according to the third embodiment of the present invention. FIG. 11 shows the screw portion 33 of the metal rod member 30 of FIG.
FIG. 12 is an enlarged sectional view showing the vicinity of the metal rod member 20 shown in FIG.
It is an expanded sectional view near the screw part 23 of FIG.

In FIGS. 10 to 12, a hexagonal bolt is inserted as a screw portion 23a into the inside of the tip of the metal rod 21 made of a steel pipe, and is fixed by plug welding similarly to the above-described embodiment. A hexagonal nut is fixed to the inside of the portion as a screw portion 33a that engages with the hexagonal bolt by plug welding.

Thus, the screw 23a and the screw 3
Since it is possible to use commercially available bolts and nuts without specially manufacturing both parts 3a, the manufacturing cost can be greatly reduced.

In order to secure the screwing of the screw portion 23a and the screw portion 33a of the bolt / nut, the bolt and the nut are screwed together, and each part is plug-welded in a temporarily connected state as shown in FIG. preferable.

The connection type iron lever 10 of each of the above-described embodiments has an end portion 22 having a substantially flat tip portion used for nail removal or scouring, and one of the metal rod members functioning substantially as a bar. 20 and the other metal rod member 30 which has an end body 32 having a substantially conical sharp tip, and which functions as an iron lever. If the end member 22 or the end member 32 of the other metal rod member 20 and the other metal rod member 30 are not of the same form, they can cope with a plurality of functions.

That is, the connection type iron lever of each of the above embodiments is
An end member 22 provided at one end of the metal rod 21;
Metal rod member 20 comprising a screw portion 23 provided at the other end of
A metal rod member 30 including an end body 32 provided at one end of the metal rod 31 and having a different shape from the end body 22; and a screw part 33 provided at the other end of the metal rod 31; 20
Alternatively, connecting pipes 35, 35 including the screw portion 23 or the screw portion 33 fixed to the outer periphery of any one of the metal rods 30.
a, and the screw portion 23 of the metal rod member 20 and the screw portion 33 of the other metal rod member 30 are screwed and integrated into the connecting pipes 35 and 35a.

Therefore, the length of the metal rod member and the other metal rod member are divided into two parts to make the length about a half of that of the conventional one, and the handling such as carrying, transporting, or storing is made. Can be easier. Also, connecting pipes 35, 35a
As a result, the screw portions 23 and 33, particularly the male screw 34, are wrapped inside, so that the peaks of the screw portions 23 and 33 are not crushed by external force, so that the life can be extended. Then, the concentrated weights applied to the connecting portions by the connecting pipes 35 and 35a can be dispersed.

The connection type iron lever of each of the above embodiments is
The outer diameter of the metal rods 21 and 31 is made larger than the outer diameter of the threaded parts 23 and 33, and the inner circumference of the connecting pipes 35 and 35a provided on the outer circumference of the metal rods 21 and 31 on the opening side is At least a portion closely contacting the outer diameter of the metal rods 21 and 31 is provided.

Therefore, the one metal rod member 20 and the other metal rod member 30 can be more firmly fixed together, and the possibility of rattling can be reduced. In addition, the characteristics do not deteriorate due to scratches on the contact surface, etc., even after several connection and disassembly.

In the above-described embodiment, the metal rods 21 and 31 constituting the metal rod member 20 and the metal rod member 30 are formed by metal tubes. It can be a metal rod.

The configuration of each component such as the screw portion 33 of the metal rod member 30 and each component such as the screw portion 23 of the metal rod member 20 in each of the above embodiments is not limited thereto. Conversely, even if the metal rod member 20 and the metal rod member 30 are switched, the effect of the present invention is not changed.

[0036]

As described above, the connection-type iron lever according to the first aspect of the present invention includes one end metal provided at one end of the metal rod and one screw portion provided at the other end of the metal rod. A rod member, an end member having a different form from the end member provided at one end of the metal rod, a screw member provided at the other end of the metal rod, and the other metal rod member; Or a connecting pipe including the screw portion fixed to the outer periphery of any one of the other metal rods, and connecting the screw portion of the one metal rod member and the screw portion of the other metal rod member to the connecting pipe. It is screwed together inside.

Accordingly, it is possible to make the length of the metal rod member into one half and that of the other metal rod member to be about half the conventional length, thereby facilitating handling such as carrying, transporting or storing. Further, since the screw portion, particularly the male screw, is wrapped inside by the connecting pipe, the screw portion is not crushed by an external force, so that the life can be extended. Then, the concentrated weight applied to the connection part by the connecting pipe can be dispersed.

According to a second aspect of the present invention, there is provided a connection type iron lever, wherein the outer diameter of the metal rod is larger than the outer diameter of the screw portion, and the inner circumference of the connecting pipe provided on the outer circumference of the metal rod on the opening side. Has at least a portion closely contacted with the outer diameter of the metal rod, so that in addition to the effect of claim 1, one of the metal rod members and the other metal rod member are more strongly integrated. It can be fixed, and the possibility of rattling can be reduced. In addition, the contact surface can be hardly scratched even after repeated use.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire connection type iron lever according to a first embodiment of the present invention.

FIG. 2 is a perspective view of one metal rod member of FIG. 1;

FIG. 3 is a perspective view of the other metal rod member of FIG. 1;

FIG. 4 is an enlarged cross-sectional view showing a screwed state of one metal rod member and the other metal rod member of FIG.

FIG. 5 is an enlarged sectional view of the vicinity of a screw portion of the other metal rod member of FIG.

FIG. 6 is an enlarged sectional view of the vicinity of a screw portion of one of the metal rod members in FIG.

FIG. 7 is an enlarged sectional view showing a fitting form of one metal rod member and the other metal rod member of the connection type iron lever according to the second embodiment of the present invention.

FIG. 8 is an enlarged cross-sectional view of the vicinity of a screw portion of the other metal rod member of FIG. 7;

FIG. 9 is an enlarged sectional view of the vicinity of a screw portion of one of the metal rod members of FIG.

FIG. 10 is an enlarged sectional view showing a fitting state of one metal rod member and the other metal rod member of the connection type iron lever according to the third embodiment of the present invention.

FIG. 11 is an enlarged sectional view of the vicinity of a thread portion of one of the metal rod members in FIG.

FIG. 12 is an enlarged cross-sectional view of the vicinity of a screw portion of the other metal rod member of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Connection type iron lever 20 Metal rod member 21 Metal rod 22 End part 23 Screw part 26 Insertion part 30 Metal rod member 31 Metal rod 32 End part 33 Screw part 35 Connecting pipe 36 Fitting part

Claims (2)

[Claims] A metal rod member provided at one end of the metal rod; a screw member provided at the other end of the metal rod; and the end body provided at one end of the metal rod. The other metal rod member including an end body having a different form and a screw part provided at the other end of the metal rod, and the screw part fixed to an outer periphery of one of the one metal rod and the other metal rod A connection pipe including: a screw portion of the one metal rod member and a screw portion of the other metal rod member are screwed and integrated into the connection pipe. Iron lever. 2. An outer diameter of the metal rod is made larger than an outer diameter of the screw part, and an inner circumference of an opening side of a connecting pipe provided on an outer circumference of the metal rod has at least an outer diameter of the metal rod. The connection type iron lever according to claim 1, wherein the connection type iron lever has a portion closely contacted with the iron lever.