JP2785127B2 - Bar and lever stick - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bar and a lever.

[0002]

2. Description of the Related Art A crowbar is basically formed by bending one end of a flat rod-shaped main body into an L shape in a flat longitudinal direction, dividing the tip into two branches in a horizontal direction, and hooking a head of a nail. The nail pulling portion is formed as described above, and the other end portion forms a nail pulling portion with the flat nail portion or the flat nail portion bifurcated in the flat lateral direction. The lever bar is a metal round bar or a hexagonal or octagonal square bar, one of which is pointed and the other is formed in a flat claw shape.

[0003] The above-mentioned burls and levers are integrally forged and formed of steel, and are given a predetermined quenching to have a predetermined strength. Also, in the case of a crowbar, it is known to use a flat pipe body for a rod-shaped main body between a nail puller and a flat claw.

[0004]

By the way, when the bar or lever bar becomes large, the forging die becomes large, and the forging press machine becomes inevitably large, and the production thereof is complicated. In addition, the whole is made of steel, which has a corresponding weight and is inconvenient to handle. When a flat pipe is adopted as the rod-shaped main body, weight reduction and component realization are realized. However, since the action direction (direction in which force is applied) of the nail puller and the action direction of the flat claw part are different, as illustrated in FIG. When the force b acts in the direction in which the pipe body a is bent in the flat lateral direction, the pipe body a is bent. Therefore, the present invention proposes a novel crowbar and lever which is easy to manufacture and can prevent bending of the main body.

[0005]

A crowbar according to the present invention comprises:
The tip of the L-shaped torso is forked to form a nail-pulling part, and a nail-pulling body is formed with an insertion part at the base of the body, and a flat claw is formed at the tip of the body, and the insertion part is made at the base. With the formed claw body, in a crowbar obtained by inserting and inserting each insertion portion at both ends of a pipe body of an appropriate length, the body portion and the insertion portion of the nail removal body are formed into a vertically flat shape in which the operation direction is the longitudinal direction. Formed in a substantially elliptical cross-section, the body part and insertion part of the claw body are formed in a substantially flat, substantially elliptical cross-section in which the action direction is the longitudinal direction, and the flat direction is changed by 90 degrees in the middle part of the pipe body, A substantially elliptical opening flattened in a direction perpendicular to each other is formed at both end portions, and the insertion portions of the nail puller and the nail body are inserted and welded to the opening at both ends of the pipe, respectively.

In particular, the insertion portion and the body portion near the insertion portion of the nail puller are formed in a circular cross section, and the body portion and the insertion portion of the claw body are formed in a substantially flat and substantially elliptical cross section whose working direction is the longitudinal direction. Then, one end of the pipe body is flattened corresponding to the elliptical end surface of the claw body, and the other end is formed as a circular cross section corresponding to the nailed body, thereby forming a pipe body having a cross section between both ends that is gradually changed. Then, the respective insertion portions of the nail puller and the nail are inserted and welded to both ends of the pipe main body, respectively.

Further, the lever stick according to the present invention has a piercing member having a piercing portion formed by sharpening the tip portion, and an insertion portion formed at the base of the body portion, and a wide flat claw portion at the tip of the body portion. And a claw body having an insertion portion formed at the base thereof, and a lever rod formed by inserting and inserting each insertion portion to both ends of a pipe body of an appropriate length, close to the insertion portion and the insertion portion of the nail puncher. The torso is formed in a circular cross section, the torso and the insertion portion of the claw body are formed in a vertically flat, substantially elliptical cross section in which the action direction is the longitudinal direction, and one opening of the pipe body is formed in the claw body. The pipe body is formed by gradually changing the cross section between the two openings by forming a flat elliptical opening corresponding to the elliptical cross section and making the opening at the other end a circular opening corresponding to the nailed body. Insert and insert the piercing body and the claw body respectively at both ends of the pipe body. And it is characterized in Rukoto.

Therefore, although the conventional rod-shaped main body portion is a pipe body, when using any of a nailed body, a claw body, and a piercing body, a force near the lever fulcrum is applied in a circular cross section or a flat vertical direction. It acts and no force acts in the direction of bending the flat lateral direction, so that the main body does not bend by use.

[0009]

Next, an embodiment of the present invention will be described. FIGS. 1 to 5 show a first embodiment of the present invention, in which a crowbar shown in this embodiment includes a nailer 1, a nail 2,
The nail body 1 and the nail body 2 are formed by forging.

The nail puller 1 is a nail puller 1 in which the head of a nail A is hooked with the tip of an L-shaped body 11 forked.
2 and the insertion portion 13 is formed at the base of the body portion 11 through a step (corresponding to the thickness of the pipe body 3). In particular, the body portion 11 and the insertion portion 13 are bent at the body portion 11. Are formed in an approximately elliptical cross-section of a vertical flat when the bifurcated direction of the nail puller 12 is a horizontal direction.

The claw body 2 has a flat claw portion 22 formed in front of a body portion 21 and an insertion portion 23 formed in a base portion with a step (corresponding to the thickness of the pipe body 3). The insertion portion 23 and the insertion portion 23 are formed in a substantially elliptical cross-section that is flat in the vertical direction when the flat claw portion 22 is in the horizontal direction, that is, in the working direction when used as a tool.

The pipe main body 3 is a pipe of an appropriate length made of high-altitude steel, having a central section 31 having a circular cross section, and two end-direction sections 32, 33 having a shape in which flat directions differ by 90 degrees in the middle section. The opening portions 36 and 37 at both ends are formed in a substantially elliptical cross section in which the insertion portions 13 and 23 can be fitted. Also, the insertion portions 13, 23 of the both end portions 32, 33
The welding through holes 34 and 3 are formed on the side surfaces (flat surfaces)
5 is drilled in advance. And both end openings 3 of the pipe body 3
6 and 37, the insertion portions 13 and 23 of the nail puller 1 and the nail 2 are fitted respectively, and the contact portions (openings 3
6, 37) The pipe body 3 and the nail puller 1 and the nail 2 are rigidly integrated by welding at the through holes 34 and 35. Further, after integration, heat treatment such as predetermined quenching is performed.

Thus, it is possible to obtain a crowbar in which the rod-shaped main body portion becomes a pipe. When the nailed body 1 is used, the bent portion of the body 11 becomes the fulcrum a, and the pipe main body 3
A force in the bending direction acts on the portion 31 near the fulcrum a.
Has a flat cross section and has increased durability against bending, so that a hollow pipe can be sufficiently used. Further, when the claw body 2 is used, the portion 32 close to the fulcrum b at the time of use is also vertically flat in the direction in which the bending force acts, so that the durability is increased.
If the entire pipe body 3 is the same flat body, the claw body 2
The fulcrum point becomes laterally flat, the bending endurance becomes smaller than the circular cross section, and there is a possibility that the fulcrum will bend when used (see FIG. 10).

In addition, the present invention is not particularly limited as long as no force acts in a horizontal flat state during use, and a second embodiment as shown in FIG. 6 may be employed.

The second embodiment, like the first embodiment, comprises a nailed body 1a, a claw body 2, and a pipe body 3a. The nailed body 1a is the same as that of the first embodiment. However, the insertion part 13a and the body part 11a near the insertion part 13a are formed in a circular cross section.
Has the same structure as that of the first embodiment.

The pipe body 3a has a circular cross-section at the mounting end 38 of the nail puller 1a, and a substantially elliptical cross-section at which the mounting end 39 of the claw body 2a, which is the other end, can fit the insertion portion 23. The cross section is gradually changed to a circular cross section toward the nailed body 1a mounting side, and the insertion portions 13a and 23 of the nailed body 1a and the nailed body 2a are fitted into and welded to both ends of the pipe body 3a, respectively. It becomes something.

Also in the second embodiment, since the pipe body 3a is not subjected to a bending force in the flat lateral direction during use, sufficient strength can be provided. You can do it.

Further, the present invention may be a third embodiment as shown in FIG. In the third embodiment, two nail punches 1
1b and a burl composed of the pipe body 3, the nailed body 1 is the same as that of the first embodiment, and the nailed body 1b
Is a substitute for the claw body 2 and is provided with a vertically flat insertion portion 13b at the base of a body 11b which is vertically flat in the action direction. The pipe body 3 has the same structure as that of the first embodiment. It is.

In the same manner as in each of the above-described embodiments, the nailed body 1 and the nailed body 1b are provided at both ends of the pipe body 3, respectively.
The insertion portions 13 and 13b23 are fitted and welded and integrated, and no bending force is applied to the pipe body 3 in the flat horizontal direction during use, so that sufficient strength is provided. It can be provided.

Further, a nail puller 1a shown in the second embodiment
And a combination of the pipe body 3a and the nailed body 1b of the third embodiment.

FIGS. 8 and 9 show an embodiment of a lever stick according to the present invention. The lever stick shown in this embodiment is composed of a piercing body 4, a claw body 5, and a pipe body 3a. Then, the piercing body 4 and the claw body 5 are forged.

The piercing member 4 forms a piercing portion 42 by sharpening the tip of the body 41, and an insertion portion 43 having a circular cross section is formed at the base of the body 41 through a step corresponding to the thickness of the pipe 3a. It is provided. The claw body 5 is formed by forming a wide flat claw portion 52 in front of a body portion 51 and forming an insertion portion 53 in a base portion with a step (corresponding to the thickness of the pipe body 3). The part 51 and the insertion part 53 are formed in a substantially flat elliptical cross section that is flat in the vertical direction when the claw direction of the flat claw part 52 is set to the horizontal direction, that is, the vertical flat in the working direction when used as a tool. Become.

The pipe body 3a has the same structure as that of the second embodiment. The mounting side opening 36a of the piercing body 4 has a circular cross section corresponding to the insertion section 43 of the piercing body 4, and the other opening 37a.
a has a substantially elliptical cross-section into which the insertion portion 53 of the claw body 5 can be fitted, the whole has a substantially circular cross-section from the middle portion to the connecting side 38 of the piercing body 4, and the connection side 39 from the middle portion to the claw body 5 has: It gradually changes from a circular cross section to an elliptical cross section.
The insertion portions 43 and 53 of the piercing body 4 and the claw body 5 are fitted into the opening portions 36a and 37a at both ends of the pipe body 3a, respectively, and are welded and integrated.

Therefore, it is possible to obtain a lever rod in which the rod-shaped main body portion becomes a pipe. When the nailed body 1 is used, the pipe body 3a is vertically flat with respect to the working direction when the claw body 5 is used. Since the endurance against bending is increased, a hollow pipe can be sufficiently used.

[0025]

As described above, according to the present invention, since the rod-shaped main portion of the burl and the lever rod is formed into a pipe and the flat direction is specified, the forged part (a nailed body and a claw body) is reduced in size, and In addition to simplifying the manufacturing, the weight of the entire tool can be reduced, and at the same time, sufficient strength can be obtained.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a first embodiment of a burl according to the present invention, partially cut away.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is a sectional view of the same.

FIG. 4 is an explanatory view (a nailed body) of the same use state.

FIG. 5 is an explanatory view (claw body) of the same use state.

FIG. 6 is an exploded perspective view of the second embodiment.

FIG. 7 is a perspective view of the third embodiment with a part cut away.

FIG. 8 is an exploded perspective view showing an embodiment of the lever stick of the present invention.

FIG. 9 shows the claw body, where (a) is a front view and (b)
Is a side view.

FIG. 10 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 1, 1a, 1b Nail remover 11, 11a, 11b Body 12, 12a, 12b Nail remover 13, 13a, 13b Insertion part 2 Claw body 21 Body 22 Flat claw part 23 Insertion part 3, 3a Pipe body 31 Central part 32 , 33 Both end side parts (flat parts) 34, 35 Welding holes 35, 36 Opening 4 Piercing body 41 Body 42 Piercing part 43 Insertion part 5 Claw body 21 Body part 22 Flat claw part 53 Insertion part

Claims (4)

(57) [Claims] 1. A nailed body having an L-shaped torso formed with a tip portion forked at a forked portion, and an insertion portion formed at a base of the torso portion, and a flat claw portion formed at a forward end of the torso portion. In a crowbar formed by inserting and inserting each of the insertion portions at both ends of a pipe body of an appropriate length with a claw body having an insertion portion formed therein, the body portion and the insertion portion of the nail removal body are operated in the longitudinal direction. The main body and the insertion portion of the claw body are formed in a substantially flat vertical elliptical cross section in which the action direction is the longitudinal direction, and the pipe body has an intermediate portion in the flat direction. It is characterized in that it is formed by forming a substantially elliptical opening which is changed by 90 degrees and is flat at both ends in a direction orthogonal to each other, and inserts and inserts each of the nailed body and the claw body into the openings at both ends of the pipe. bar. 2. An nail-shaped body having an L-shaped torso formed with a tip portion forked and having a forked portion formed at the base of the torso portion, and a flat claw portion formed at a forward end of the torso portion. In a crowbar formed by inserting and inserting each of the insertion portions at both ends of a pipe body of an appropriate length with a claw body having an insertion portion formed therein, the insertion portion of the nail removal body and the body portion close to the insertion portion are circular. Formed in a cross section, the body and the insertion portion of the claw body are formed in a substantially flat, substantially elliptical cross section whose working direction is the longitudinal direction, and one opening of the pipe body is made to correspond to the elliptical cross section of the claw body. A flat elliptical opening is formed, and the opening at the other end is formed as a circular opening corresponding to the nailed body. It is specially made by inserting and welding the insertion parts of the nail puller and the nail at each end. The crowbar. 3. The crowbar according to claim 1, wherein
In place of the claw body, a nail pulling part is formed at the tip, and an insertion part is formed at the base of the trunk, and the trunk and the insertion part are
A crowbar characterized in that a nailed body formed in a vertically flat and substantially elliptical cross section whose working direction is a longitudinal direction is attached to a pipe body. 4. A piercing body in which a piercing portion is formed by sharpening a distal end portion and an insertion portion is formed in a base portion of a body portion, and a wide flat claw portion is formed in a forward portion of the body portion. With a claws formed with an insertion part, a lever rod made by inserting and welding each insertion part to both ends of a pipe body of appropriate length, the insertion part of the nail removal body and the trunk part close to the insertion part have a circular cross section. The main body and the insertion portion of the claw body are formed to have a substantially flat, substantially elliptical cross-section in which the action direction is the longitudinal direction, and one opening of the pipe body is flattened corresponding to the elliptical cross-section of the claw body. The opening at the other end is a circular opening corresponding to the nailed body, and the pipe body is formed by gradually changing the cross section between the two openings. Lever sticks characterized by inserting and welding the insertion parts of the piercing body and claw body respectively .