JPH088070Y2 - Handle for wrench - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a handle for a wrench that is attached to an L-shaped wrench for tightening various bolts to increase the tightening force. The present invention relates to a handle for a wrench that can be applied without any trouble even at a bolt installation place where there is no rotation margin of the handle such as a place near the barrier by changing.

[Conventional technology]

For bolts and setscrews, cross holes, flat holes, 6
There are various types having square holes and the like. Of these, for example, the attachment / detachment of hexagon socket head cap screws is generally performed using an L-shaped hexagon bar wrench.

By the way, when a short shaft of a hexagonal bar wrench is fitted into the head of a hexagon socket head cap screw and a rotational force is applied to the long shaft with the short shaft as the center of rotation, a relatively large tightening force can be obtained. When the hexagon socket head cap screw is installed at the back and a long shaft must be applied to the head of the hexagon socket head bolt, the turning radius of the short shaft is small, so obtain a large tightening force. Is difficult and it is easy to fall short of tightening. The same can be said when the bolt that has been sufficiently tightened is removed.

Under such circumstances, some means for increasing the tightening force have been proposed, and as a proposal of this kind, for example, Japanese Utility Model Laid-Open No. 60-146669 can be cited.

That is, the wrench of the above invention has an L-shaped wrench rod, a rod-shaped handle having a mounting hole therein and a notch communicating with the mounting hole, and a part of the wrench rod installed in the handle. A wrench provided with a fixing means for fixing
A wrench with a T-shaped handle can be formed by inserting a wrench rod into the mounting hole from the notch part of the rod-shaped handle, and then fixing it with a screw, which can give a large tightening force to the wrench. it can.

[Problems to be solved by the device]

However, in the wrench of the above invention, when the bolt installation position is close to the barrier, the T-shaped handle collides with the barrier and the handle cannot be rotated, so that the bolt cannot be tightened. In addition, the wrench uses tightening bolts to fix the wrench rod inserted in the mounting hole, so it is excellent in that it can be firmly fixed, but it is fixed by screws. It takes time, and when the hexagon socket head cap bolts are installed in various ways, it is necessary to attach / detach the handle depending on the application location, so screwing is rather a hassle to remove the handle. There is a problem in that it makes things good. Further, in this type, since it is necessary to form a mounting hole for a wrench rod in the cylindrical member and also to provide a bolt hole for a tightening bolt, there is a problem that the manufacturing cost becomes high. is there.

The present invention has been made in view of such circumstances, and it can be easily applied to a handle, that is, a handle can be easily attached and detached, and can be applied to a bolt installation place where it is difficult to rotate the handle near a barrier. In addition, it is an object of the present invention to provide a handle for a wrench that can be manufactured at low cost.

[Means for solving the problem]

As a means for achieving the above object, in the present invention, an L-shaped wrench rod is formed by connecting a U-groove portion having an open upper portion and a tubular portion for positioning the axis of the short axis of the L-shaped wrench rod. In a handle for a wrench that is attached to a wrench to enhance the tightening force, a metal flat plate is cut into a predetermined shape and subjected to bending to provide the U-shaped groove portion and the tubular portion having a butting portion at the top. , These U
A notch that serves as a first stationary portion of the wrench rod is provided at a connecting portion between the groove portion and the tubular portion, and further, a second stationary portion of the wrench rod is provided above the end portion of the tubular portion that is not connected. A notch is provided, and in addition, a separation preventing portion having a width slightly smaller than the outer diameter of the wrench rod curved inward is provided at the end of the side wall of the U groove portion on the notch side.

[Action]

A handle for a wrench according to the present invention forms a handle by connecting a U-shaped groove portion and a tubular portion. Since the U-shaped groove portion has an open upper portion, the shaft portion of the wrench rod, particularly the short shaft, is attached to the groove bottom portion. The wrench rod can be freely guided and placed, and after the wrench rod is placed at the groove bottom so that the tip of the short axis of the wrench sticks to the tubular portion side, the wrench rod is advanced to the tubular portion side. The short shaft of can be smoothly inserted into the tubular portion. In the wrench rod thus fixed, the minor axis is constrained by the tubular portion to position the axis, and
The long axis bent by 90 degrees is restrained by the side wall of the U-shaped groove to prevent movement in a direction orthogonal to the axis of the short axis, that is, swing of the long axis with the axis of the short axis as the center of rotation. As a result, the long axis of the wrench rod can be placed at a right angle to the handle, and when the handle is rotated about the long axis of the wrench rod, the bolt can be tightened with a sufficient force.

Further, the handle for the wrench of the present invention is provided with, for example, a semicircular cutout at the non-connecting side end of the tubular part, and when the short shaft of the wrench rod is inserted into the non-connecting side end of the tubular part. , The minor axis is constrained by the tubular part to position its axis, and the root part of the major axis fits into the notch so that the handle sways in the direction orthogonal to the minor axis. Motion can be prevented. As a result, the handle can be rotated with the major axis as the center of rotation and the entire length of the handle as the radius of rotation, whereby the bolt can be sufficiently tightened. Further, in the above-mentioned mounted state, the shaft portion of the handle is located in the L shape around the major axis, that is, only on one side, so that the barrier interferes with the rotation of the handle even at the bolt installation position close to the barrier. There is no need to tighten the bolts.

Further, according to this invention, the U-shaped groove near the connecting portion between the U-shaped groove and the tubular portion is provided with the separation preventing portion (narrow width portion) having a width smaller than the outer diameter of the wrench rod, so that the minor axis of the handle is tubular. When the long axis exceeds the narrow width portion when inserting into the portion, the long axis hits the narrow width portion even if the wrench rod tries to come out from the tubular portion, and the wrench rod can be prevented from coming out. still,
The narrow width portion of the U groove portion preferably has a shape in which the groove width gradually decreases as it approaches the tubular portion, and if the groove width is designed to be a normal groove width when passing through the narrowest portion, there is not much obstacle during insertion. On the other hand, on the other hand, after the insertion, it can be effectively prevented from coming off. However, it goes without saying that the groove width should be formed so that the wrench bar can be pulled out from the handle when a forcing force is applied.

〔Example〕

FIG. 1 is a perspective view showing a wrench handle and a wrench rod according to an embodiment. The handle 1 is configured by connecting a U groove portion 2 and a tubular portion 3 at a substantially central portion in the longitudinal direction. The connecting portion is the first stationary portion 5 of the wrench rod 4. Further, in the illustrated example, the cut portion 6 is provided between the U groove portion 2 and the tubular portion 3.
And the end portion of the side wall 2a of the U groove portion 2 on the side of the cut portion 6 is curved inward to form a narrow width portion (separation prevention portion) 7. On the other hand, the tubular portion 3 of the handle 1 according to the embodiment has a butt portion 3a derived from the manufacturing process at the top thereof.
The notch 3b is formed by cutting off the upper portion of the tubular portion 3 at the non-connecting side end of the tubular portion 3, and the portion where the notch 3b is formed is the second stationary portion 8 of the wrench rod 4.

Explaining an example of use of such an embodiment handle, for example, FIG. 2 is a cross-sectional explanatory view of a main part showing a mounting state of a composite panel for outer wall in a prefabricated house, and 9 is formed by assembling a steel frame material. 2 shows a strut made of lip channel steel that is part of the structure. The state where the composite panels 10, 10 for the outer wall are attached to the pillar 9 by using the fastener 11 is shown, and the fastener 11 makes contact with the outer surface side of the pillar 9 U
Bracket 12 and a pressing plate 1 that abuts the inner surface of the column 9
3, Hexagon socket head cap bolt 14 that passes through the gap between the two columns 9, 9 from the U-shaped metal fitting 11 side and is screwed into the presser plate 13, U-shaped metal fitting
Composite panel 10,10 sandwiched between 12 and hexagonal bolt 14
It is composed of pressing metal fittings 16, 16 that come into contact with the inner surfaces 15a, 15a of the U-shaped end frame 15. Then, by rotating the hexagon socket head cap bolt 14, the holding metal fittings 16, 16 press the inner surfaces 15a, 15a of the end frames 15, 15 to fix the composite panels 10, 10 to the support column 9. it can.

When mounting such composite panels 10 and 10, the heads 14a of the hexagon socket head bolts 14 are attached to the outer walls 10a and
Since it is inserted inward from 10a, when tightening this, insert the long axis 4a of the L-shaped wrench rod 4 from the gap 17 of the composite panels 10, 10 and insert the hexagon socket head bolt 14 head 14a.
It is necessary to fit it in and tighten it. At this time, if the short shaft 4b of the wrench rod 4 is fitted into the first stationary portion 5 at the substantially central portion of the wrench handle 1 according to the above-described embodiment, the tightening force can be increased, and the hexagonal hole is provided. The bolt 14 can be sufficiently tightened.

On the other hand, when mounting the composite panel 10 in a prefabricated house, as shown in FIG. 3, only one end of the composite panel 10 may be fixed to the pillar 9 near the bay window 18. At such a panel mounting location, even if the same fastener 11 as that shown in FIG.
Tightening the square bolt 14 is awkward. That is, even if the long shaft 4a of the wrench rod 4 is fitted into the head 14a of the hexagon socket head cap screw 14 and is rotated, the short shaft 4b of the wrench rod 4 collides with the bayonet frame 18a and rotates 360 degrees. Can not. Further, as shown in FIG. 2, when the short shaft 4b of the wrench rod 4 is fitted into the first stationary portion 5 of the wrench handle 1, the handle 1 becomes an obstacle and the hexagon socket bolt 14 cannot be rotated. It becomes more and more difficult. Therefore, in this case, as shown in FIG. 3, when the short shaft 4b of the wrench rod 4 is inserted and fitted into the second stationary portion 8 of the handle 1 according to the embodiment, the handle 1 is rotated. The entire length of the handle 1 can be utilized, and the bolt 14 can be tightened with a larger tightening force. still,
In this case, after rotating the wrench bar 4 about 180 degrees,
It is only necessary to remove the wrench rod 4 from the hexagon socket head bolt 14 once, reversely rotate only the wrench rod 4 about 180 degrees, and then attach it to the hexagon socket head bolt 14 again and rotate it.

As described above, the handle 1 for the wrench according to the embodiment.
Can give a large tightening force to the wrench rod 4 by changing the fixed location of the wrench rod 4 according to the application location, and even in the location where the hexagon socket head bolt 14 is installed near the bay window 18 or the like. The bolt can be attached with sufficient force without any trouble.

Further, in the handle 1 of the above-described embodiment, the end of the U groove 2 on the notch 6 side is curved inward to form the narrow width portion 7 having a groove width slightly smaller than the outer diameter of the hexagon socket head bolt 4. Because
The long shaft 4a of the wrench rod 4 fixed on the first stationary portion 5 is restrained by the narrow portion 7 to prevent the wrench rod 4 from coming out, and
The stationary state shown in the figure can be stabilized and maintained. Further, in the first stationary portion 5, the side wall 2a of the U groove portion 2 serves as a restraining wall to prevent the stationary wrench rod 4 from falling in a direction orthogonal to the axis of the stationary wrench rod 4. In the portion 8, since the short shaft 4b of the wrench rod 4 enters the center side from the end of the tubular portion 3 by the length of the notch 3b when the wrench rod 4 is placed, the side wall of the notched tubular portion 3 Became a restraint wall,
It is possible to prevent the long axis 4a of the fixed wrench rod 4 from falling in a direction orthogonal to the axis of the wrench rod 4.

The entire handle for the wrench constructed in this way is cut into a predetermined shape using a metal flat plate and bent. That is, in manufacturing the handle 1 shown in FIG. 1, first, a metal flat plate is cut into a shape shown in FIG. Next, after bending the obtained metal plate 19 to produce a U-groove-shaped member, only the half of the U-groove forming member on the side where the cutout portion is provided is further bent. The tubular portion 3 may be formed by

In the above manufacturing method, since the handle 1 can be manufactured using a plate-shaped material that is less expensive than a tubular member, the material cost is low and the handle can be manufactured economically. Further, when a cylindrical material is used, it is necessary to perform processing such as punching and cutting in order to obtain the U groove portion, whereas in the above method, the handle can be manufactured mainly by bending. Is easy and the processing cost is low.

In the above embodiment, the description has been given for the hexagon socket head bolt 14, but the handle 1 for the wrench according to the present invention can be used for tightening the bolt 14 having a head shape other than the hexagon socket. The handle 1 of the present invention is preferably made of special steel such as Ni-Cr-Mo-V steel in consideration of bending workability and strength.

[Effect of device]

The present invention is configured as described above, and the connecting portion between the U groove portion and the tubular portion is the first stationary portion, and the non-connecting side end portion provided with the notch of the tubular portion is the second stationary portion. Therefore, by selecting the attachment position of the wrench rod, the bolt can be tightened without any trouble even if the bolt installation location is close to the barrier.

In addition, if a separation preventing portion formed by narrowing the groove width, for example, is provided in the U groove portion near the connecting portion, when the wrench rod is rotated using the handle, the wrench rod fixed on the first stationary portion is separated from the stationary position. The bolt can be securely tightened, and the handle can be easily attached to and detached from the wrench rod. Furthermore, since the entire handle for the wrench is manufactured by cutting it into a predetermined shape using a metal flat plate and bending it, the material cost is low and the handle can be manufactured economically. .

[Brief description of drawings]

FIG. 1 is a perspective explanatory view showing a handle for a wrench and an L-shaped wrench rod according to an embodiment, FIGS. 2 and 3 are sectional explanatory views showing an example of using the handle for the wrench, and FIG. It is a plane explanatory view showing the plate shape before bending. 1 ... Handle, 2 ... U groove part, 3 ... Cylindrical part, 3a ...
Butt, 3b, notch, 4 ... wrench bar, 5 ...
1st stationary part, 6 ... Notch part, 7 ... Narrow part (separation prevention part), 8 ... 2nd stationary part

Claims (1)

[Scope of utility model registration request] 1. A U-shaped wrench rod having an open upper portion and a cylindrical portion for positioning the axis of the short axis of the L-shaped wrench rod, which are connected to each other to enhance the tightening force. In a handle for a wrench, a flat metal plate is cut into a predetermined shape and subjected to bending to provide the U-shaped groove portion and the tubular portion having a butted portion at the top, and the U-shaped groove portion and the tubular portion. The connecting portion is provided with a notch serving as a first stationary portion of the wrench rod, and further, a notch serving as a second stationary portion of the wrench rod is provided at an upper portion of the non-coupling side end of the tubular portion. A handle for a wrench, characterized in that a separation preventing portion having a width slightly smaller than an outer diameter of a wrench rod curved inward is provided at an end portion of a side wall of the U groove portion on a notch portion side.