JPS6345181Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a saw extension tool for cutting down high branches, which is used for a normal hand saw when cutting down high branches.

2. Description of the Related Art Conventionally, a saw for cutting high branches is known in which a portion corresponding to the handle of the saw is formed into a pipe shape, and an extension bar (mainly a pipe) is connected to the pipe-shaped part.

However, the above method had the disadvantage of requiring a special saw.

The object of the present invention is to provide an attachment that can be used as a saw for cutting down high branches by using a commonly used hand saw without the need for a special saw.

Next, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view of the saw extender with the saw handle attachment screw open.

The saw handle holding part 1 having a U-shaped cross section has opposing wall plates 1a and 1b, and the interval B between the wall plates on both sides is slightly wider than the thickness of the handle of the saw held between them. The distance B is made of sheet metal or the like and is slightly shorter than the length of the handle of the saw so that the distance B can be reduced when tightening with a tensioning member such as a screw which will be described later. One end of a mounting screw 2 is rotatably provided on one wall plate 1b at a position slightly forward of the longitudinal center of the saw handle holding part 1 by a small shaft 4. In addition, a U-shaped notch is provided at the installation location of the mounting screw on the wall plate 1b so that the base of one end of the screw can be rotated without any trouble, and both ends of the small shaft 4 are attached to the wall plate 1 by brazing or the like.
A butterfly nut 3 is screwed into the mounting screw 2, and the length of the screw is sufficient to tighten the above-mentioned distance B. Also,
A U-shaped notch 7 is provided in the wall plate 1a at a position opposite to the notch, and when the screw 2 is rotated across the opening, the screw 2 fits into the notch 7 and locks into a butterfly nut. 3 so that it can be tightened.

In addition, saw handle front end stoppers 5a and 5b are provided at the respective ends of both wall plates 1a and 1b so as to bend the wall plates, and a saw blade X is provided between the two stoppers.
A gap 8 is provided through which the material can be inserted.

On the other hand, a stopper 5a at the front end of the saw handle of the clamping part 1,
On the opposite side of 5b, there is a connecting part 9 which is continuous with the clamping part and is formed into a pipe shape by forming a sheet metal or the like constituting the clamping part, and the inner diameter of the pipe is sized so that the end of the extension bar can be attached and detached. will be established.

FIG. 2 is a side view showing the mounting screw 2 of the clamping part 1 as shown in FIG. 1 in an open state and then turning the screw to close the opening. FIG.

In Figure 4, the handle Y of the saw blade X is clamped between both wall plates 1a and 1b of the saw handle holding part 1 of the proposed saw extension tool, the opening is closed with the mounting screw 2, and the butterfly nut 3 is turned. Pattern Y
is tightened into the clamping part 1, and the extension bar Z is further fitted into the connecting part 9. In this case, the front end of the handle Y is brought into contact with the front end stopper parts 5a, 5b of the clamping member, and the saw blade X is made to protrude from the gap 8 of the stopper parts. Then connect the slightly rear part of the back of the handle to the connecting part 9.
The handle is brought into contact with the rear handle stopper part 6, which is the front edge of the handle. Tightening the handle to the wall plate in this way stabilizes the handle and allows the saw to be securely attached to the extension.

In the embodiment, a screw is used as the tensioning member, but the present invention is not limited to this, and a hook may be used instead.

As is clear from the above description, the saw extension tool of the present invention does not require a special saw; just use a commonly used hand saw, tighten it into the gripping part, and connect the extension bar. It can be used as a saw for cutting down high branches, and it has the effect of being easy to operate and being usable as a saw for cutting down high branches without causing an increase in cost unlike conventional ones.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view of the saw extension tool, Fig. 2 is a side view when the mounting screw is closed, and Fig. 3 is a side view of Fig. 2; 4
The figure is a partially cutaway side view of the saw attached to the extension tool and the extension bar fitted into it. 1...Saw handle holding part, 1a, 1b...Wall plate, 2...
...Mounting screw, 3...Butterfly nut, 5a, 5b...
Front end stopper part of handle, 6... Rear stopper part of handle, 8... Gap, 9... Connecting part, X... Saw blade, Y
...Handle, Z...Extension bar.

Claims (1)

[Scope of utility model registration request] A U-shaped saw handle holding part whose width is slightly larger than the thickness of the saw handle and which is retractable, and one end of which is rotatably supported on one wall plate of the U-shaped wall. The clamping part is provided with a handle front end stopper part at its front end, a continuous extension bar connecting part at its rear end, and a handle member which can be closed across the parts and narrow the gap between the openings. A saw extension tool for felling high branches, characterized by having a rear stopper part.