JPH0627340Y2 - Crank wrench - Google Patents

Description

[Detailed Description of the Invention] Industrial field of use [Technical Field] The present invention relates to a tool for rotating a headless bolt such as a hexagon.

Conventional technology Conventionally, in the case of turning a bolt without a head such as a hexagon, hang the nut on a double (not shown) or turn it with a tool applying the principle of the double nut,
Further, in some cases, the ends of the bolts are processed into a shape that allows a spanner to be applied, and then a spanner is applied and turned.

Problems to be Solved by the Invention However, the conventional method of turning a bolt having no head, such as a hexagon, by turning a double nut is very difficult in high-altitude work as shown in FIG. To explain it, FIG. 4 is a partial cross-sectional plan view in which a pruning ladder for afforestation is fixed to a tree, 9 is a pillar of a ladder, 10 is a tree, 1 is a bolt, 12 is a nut, 13 is an arc plate, 14 is a band, 15
A key, 16 is a band length adjuster, and A is the present invention.

The length of one of the columns 9 is about 2 meters, and several columns are spliced together depending on the height of the standing tree 10. Further, the equipment for fixing the columns 9 shown in the drawings is provided for each column 9 for safety.
Except when fixing to the standing tree 10, all the fixing tools other than the key 15 are removed for weight saving, and it is configured to be carried by the worker.

Further, in order to make the ladder lightweight, instead of projecting steps on the pillar 9, innumerable long holes are formed on both sides of the pillar 9, and the shoe auxiliary tools attached to both legs of the worker through the long holes. It is configured to be lifted up and down by hooking a key (not shown).

This ladder is constructed as described above, and the pillar 9 and the stand 10
Each time it is fixed to the
Moreover, since it is removed, the device A cannot be fixed to the bolt 11. Therefore, every time the ladder is fixed to the tree 10, the bolt 11 is turned by turning the bolt 11 by multiplying the bolt 11 with the double nut. However, this is very time consuming and very uneconomical.

Further, the bolt 11 cannot be loosened by a tool (not shown) to which the above-mentioned double nut principle is applied.

Next, as the prior art of this invention, the Japanese Utility Model Publication No. 46-27
The device described in Japanese Patent Publication No. 200 and Japanese Utility Model Publication No. 58-160771.
The invention described in Japanese Patent Publication is cited.

First of all, although not shown in the drawings, the device of Japanese Utility Model Publication No. 46-27200 is a device for adjusting the scale of the micrometer. This device rotates the outer sleeve of the micrometer very slightly. It cannot be used in places where a large amount of force is applied due to its structure.

The reason is that the tip of the curved arm 4 forming a semicircle serves as a fulcrum,
This is because the bending arm 4 rotates and moves away from the bolt, so that the engaging projection 5 is disengaged from the engaging hole. This is curved arm 4
Is a semi-circle and the engagement protrusion is short.

Therefore, it is impossible to strongly tighten the bolts with this device.

Next, although not shown, the invention of Japanese Utility Model Laid-Open No. 58-160771 has a handle 3 attached to one end of the core rod 2 and a protrusion or a recess extending coaxially with the core rod 2 at the other end. The outer surface of the protrusion or the inner surface of the depression is deformed in the circumferential direction,
It is a device that is configured to attach detachably an accessory having a part suitable for this, but this device is a screw tightening tool that replaces various accessories and tightens screws. It is impossible to tighten or loosen the screws that are not attached.

The present invention has been made to solve the drawbacks of the conventional tools as described above, and its purpose is to apply bolts or the like having no head, such as hexagon, to the bolts etc. It is to provide a wrench that can be turned.

MEANS FOR SOLVING THE PROBLEM In the present invention to achieve the above-mentioned object, it can be said that the whole body has a rectangular shape, and one side of the main body 1 having a constant thickness is provided with a slot 2 on the one side. It is provided so as to be vertically long along the vertical direction. Further, one side of the main body 1 has a constant height, the inner wall is aligned with the peripheral edge of the elongated hole 2, the central portion side of the main body 1 is opened, and the frame 3 having a U-shape is projected. It was set up. Further, a pin 4 having an arbitrary length passing through the middle of the frame 3 is provided at the center of the curved portion of the frame 3. Also, on the back surface of the end of the main body 1 on the side opposite to the side on which the elongated hole 2 is provided, the surface on which the frame 3 is provided
The handle 5 is projected.

The operation of the present invention will be described with reference to FIG. 4. First, the bolt 11 is directed from the front side of the support column 9 toward the front, the nut 12 is passed until it contacts the support column 9, and the arc plate 13 is applied to the standing tree 10, and then the band 14 is pressed. Is wrapped around a stand 10, one end of which is hooked on one end of a hook 15, the other end is passed through a band length adjuster 16, and the length of the band 14 is adjusted. Hang it on the other end of the key 15, insert the pin 4 of the present invention into the hole formed in the bolt 11, and turn the handle 5 so that the arc plate 13 pushes the tree 10, so that the band 14 is tightened and the pillar 9 is fixed to the tree 10. Fixed.

And, the above work can be performed by one hand.

Embodiments In FIGS. 1, 2, and 3, reference numeral 1 is a main body of the present invention, one side of which is provided with an elongated hole 2, and one of the surfaces of the body 1 has an inner wall having the elongated hole. A U-shaped frame 3 is formed so as to project along the periphery of the main body 1 and open at the center of the main body 1. In this case, the distance between both walls of the U-shaped frame 3 is
It may be a little wider than the bolt 11.

Further, the elongated hole 2 may be a hole slightly larger than the frame 3. Further, a pin 4 of an arbitrary length passing through the middle of the frame 3 is provided at the center of the curved portion of the frame 3.

In the figure, 7 is a hole through which a string or the like is bored in the main body 1, and 8 is a mark attached to the tip of the bolt 11 to indicate the direction of the hole bored in the bolt 11.

Effect of the Invention This invention has the following effects by being configured as described above.

(B) The present invention can be easily attached to and detached from the bolt 11 by simply making one hole in the bolt 11, and never spins idle.

(B) If the distance between both walls of the frame 3 is substantially the same as the diameter of the bolt 11, the outer surface of the bolt 11 contacts the inner wall of the frame 3, so that the pin 4 does not bend or break.

(C) Since the direction of the force that rotates the handle 5 is applied at a right angle to the pin 4, the bolt 11 does not separate from the root of the pin 4 during rotation.

In addition, even if the present invention is turned a little rough, the pin 4 becomes the bolt 11
The present invention never comes off from the bolt 11 because it penetrates through.

(D) In the present invention, a round bar, a pipe or the like can be turned by making one hole.

[Brief description of drawings]

FIG. 1 is a front view of the present invention, FIG. 2 is a rear view of the present invention, FIG. 3 is a partial sectional side view of the present invention, and FIG. 4 is a part showing an embodiment of the present invention. It is a cross-sectional plan view. 1 ... Main body 2 ... Long hole 3 ... Frame 4 ... Pin 5 ... Handle 11 ... Bolt A ... The present invention.

Claims (1)

[Scope of utility model registration request] 1. An elongated hole 2 is provided on one side of a main body 1 having an overall rectangular shape and having a constant thickness so as to be vertically long along the vertical direction of the main body 1, and the main body 1 is further provided. A frame 3 having a constant height, an inner wall coinciding with the peripheral edge of the elongated hole 2, a central portion side of the main body 1 opened, and a U-shaped frame 3 as a whole is provided on one side of the A pin 4 having an arbitrary length, which passes through the middle of the frame 3 and projects in the center of the curved portion of the frame 3, and an end of the main body 1 opposite to the side where the long hole 2 is provided. The crank type wrench is characterized in that a handle 5 is provided on the back surface of the surface on which the frame 3 is provided.