JPH01171901A - Handle of saw - Google Patents

Abstract

PURPOSE:To lightly and easily perform a cutting work by providing a cut assistant member extending parallel to a handle body on which a saw blade is mounted, a retainer for an article to be sawed attached to the assistant member, and a moving guide member for guiding the handle body along the member. CONSTITUTION:When the handle 13 of a rock preventive rod 3 is grasped by a left hand, the grip 5 of a handle body 2 is grasped by a right hand to be worked, an abutment part 9 of a branch retainer 8 is pressed in contact with the branch of a tree to be cut, the handle 13 is so tightly grasped in this state as not to move the rod 3, and the branch is cut by teeth 12. When the body 2 is pulled down, the teeth 12 are engaged with the branch to be cut, and the branch tends to rock by this resistance in the pulling direction. However, since the branch is retained by the retainer 8, it cannot move. Eventually, the teeth 12 are smoothly intruded into the branch. Accordingly, when the branch of a high tree is sheared, the branch to be cut is not rocked, thereby lightly and easily perform the cutting work.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a hand saw handle used for cutting wood, pruning, etc.

<Prior Art> Hand saw handles have conventionally come in various shapes, such as long and short, or straight curved, depending on the type and purpose of the saw.

For example, there are straight handles of double-edged saws and drill saws, cane-shaped or shrimp-shaped handles of pruning saws, and handles that reach 2 to 3 meters long, such as those used for pruning apples and cedar cypress hats. Various saw handles are known.

Although there are many types of saw handles, the common feature is that the movement during cutting is a single stroke back and forth that is integrated with the cutting action of the saw blade. There is.

<Problems to be Solved by the Invention> However, when cutting with a conventional manual saw, there is a drawback that depending on the object to be cut, the object moves in the sawing direction at the start of cutting, making it difficult to cut. was there. For example, when pruning the branches of a tree, the branches swing and make pruning (cutting the branches) difficult. This is because, at the start of cutting, resistance occurs due to catching between the saw teeth and the branch of the tree to be cut, causing the branch to swing in the sawing direction. This oscillation is so severe that it becomes a trick, and even reaches the tip of the branch.

Therefore, when pruning (cutting) the branches of a tree (standing tree), if the branch is within the height of the worker, the worker should hold the branch with one hand to prevent the branch from swinging. You will have to do the cutting work while protecting yourself from this. Furthermore, when cutting branches of trees that are taller than the worker, the task is quite difficult.

In addition, not only in the above-mentioned pruning work, but even when cutting familiar wood, workers should not press down on the wood to be cut with their feet or hold it with their hands, and avoid touching the wood to be cut when cutting. It is necessary to prevent the worker from moving, and in order to do this, the worker has to bend his/her body position, such as bending at the waist.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a saw handle that eliminates the above-mentioned drawbacks and allows efficient cutting work in a comfortable working position. In particular, one embodiment of the present invention aims to provide a hand saw handle suitable for pruning branches of tall trees.

Means for Solving the Problems> The present invention is a manual saw handle, which includes a handle main body to which a saw blade is attached to the tip thereof, a cutting auxiliary member extending parallel to the handle main body, and a cutting auxiliary member extending parallel to the handle main body. A workpiece receiving member attached to the tip of the auxiliary member and having a contact portion at least a part of which comes into contact with the workpiece; and a movement of the handle body when the handle body is moved for cutting work. A saw handle characterized in that it includes a movement guide member that guides a direction along the cutting auxiliary member.

Action〉 With the workpiece receiving member attached to the tip of the cutting auxiliary member pressed against the workpiece, the handle body is moved back and forth, and the saw blade attached to the tip of the handle is pressed against the workpiece. cut. At this time, the reciprocating M movement of the handle body is guided along the cutting auxiliary member by the movement guide member, so that the positional relationship between the object receiving member and the saw blade at the tip of the handle body is stable.

When moving the handle body in the sawing direction, the time limit is 11ft! l!
The saw blade J tries to move in the sawing direction, but this movement is stopped by the object receiving member, so the saw blade easily bites into the object.

<Embodiments> Examples of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a side view of a saw suitable for pruning tall trees, which employs a saw handle according to an embodiment of the present invention, and FIG. 2 is a rear view thereof.

Explaining with reference to FIGS. 1 and 2, this saw:
It includes a saw body 1, a handle body 2, and a swing prevention rod 3. The saw body 1 is attached to the tip (upper end) 4 of the handle body 2.

In this case, the saw body 1 may be detachably attached to the tip 4 of the handle body 2, or may be fixed to the tip 4.

The I'iri main body 2 is a ball made of, for example, an aluminum alloy, and its rear end is coated with a non-slip material such as rubber coating as a grip portion 5. The grip portion 5 may be straight as shown in the figure, or may be bent at a certain angle with respect to the length direction of the handle body if necessary to improve workability.

The anti-swing rod 3 functions as a cutting auxiliary member and extends parallel to the handle body 2. The anti-sway rod 3 has a plurality of ring members 7 arranged at predetermined intervals along its length.
is installed. The handle body 2 is inserted through these ring members 7.

Therefore, when the handle body 2 is stroked up and down for cutting work with the swing prevention bar 3 fixed, the movement of the handle body 2 is controlled by the ring member 7 in the length direction of the swing prevention bar 3. You will be guided along. In other words, the anti-swing rod 3
The plurality of ring members 7 attached to the handle body 2 function as a movement guide member that guides the movement direction of the handle body 2 along the anti-swing rod 3 during cutting work.

The number and arrangement positions of the ring members 7 may be set to an appropriate number and spacing depending on the length of the handle body 2, the length of the anti-swing rod 3, etc.

A branch fitting 8 is provided at the tip (upper end) of the swing prevention rod 3. The branch tool 8 is for receiving and stopping a branch to be pruned, that is, a branch to be cut by the saw blade 1. For this purpose, the branch bone tool 8 is attached in a direction substantially perpendicular to the length direction of the swing prevention rod 3, and its distal end side upper surface 9 serves as an abutment part that comes into contact with the branch to be cut.

The cut-away end view along line l-11 in Figure 1 is shown in Figure 3.
Shown as a diagram. Referring now to FIG. 3, a slit 10 is formed in the branch fitting 8, and the saw body 1 is inserted into the slit 10. This slit 1
0, the width of the branch fitting 8 changes at approximately the center in the length direction, and the slit width W1 in the root half of the branch fitting 8 is approximately equal to the plate thickness of the saw body 1. , to a slightly larger extent. As a result, the slit side surface 1 in this part
1 is a facing inner surface that is in contact with or very close to the side surface of the saw body 1. On the other hand, the slit width W2 of the distal half of the branch fitting 8 is necessary and sufficient than the tooth width W3 of the saw teeth 12 formed on the saw body 1 (for example, the width of the saw teeth that are set). It has a wide width. A sufficiently wide width means a width so wide that the saw teeth 12 do not come into contact with the side surfaces of the slit.

As a result, the mutual positions of the branch fitting 8 and the saw body 1 are stably maintained by the opposing surfaces 11. Therefore, saw body 1
Even when the saw body 1 rotates or twists in the left-right direction to some extent when the saw body 1 strokes vertically within the slit 10, the direction of the branch fitting 8 changes accordingly. Therefore, there is no fear that the saw teeth 12 will come into contact with the branch fitting 8 and be damaged.

In addition, the branch fitting 8 is rotated relative to the anti-swing rod 3 so that the branch fitting 8 can also be easily rotated in the left-right direction in accordance with the left-right rotation of the saw body 1 at this time. It is good that it can be installed freely.

Further, in this embodiment, the distal end of the branch prosthesis 8 is in an open state, but the distal end of the branch prosthesis 8 may be closed.

Returning to FIGS. 1 and 2, the rear end of the anti-swing rod 3 (
A handle 13 is attached to the lower end) extending perpendicularly to its length. The handle 13 is provided so that the anti-swing rod 3 can be easily operated, and if necessary, the handle 13 is provided with a rubber coating or the like on its circumferential surface to prevent slipping.

In the above-mentioned embodiment, the directional relationship between the saw body 1 and the branch fitting 8 was made to be constant due to the facing surface 11 of the slit 10.
The directional relationship between the branch bone fitting 8 and the branch bone fitting 8 may be specified.

First, the branch fitting 8 is fixed to the anti-swing rod 3 so as not to rotate. The cross-sectional shape of the handle body 2 is not a perfect circle but an oval or polygon, and the plurality of ring members 7 attached to the anti-sway rod 3 are shaped to match the cross-sectional shape of the handle body 2. The shape is made to match. By doing so, the handle body 2 cannot rotate independently while being inserted through the ring member 7. Therefore, the anti-swing rod 3
By predetermining the mounting direction of the ring member 7 and the branch fitting 8, the saw teeth 12 of the saw body 1 can be prevented from coming into contact with the branch holder 8.

Next, we will explain how to use the saw shown in FIGS. 1 and 2. Normally, the user grips the handle 13 of the anti-swing rod 3 with his left hand, and grips the handle 13 of the handle body 2 with his right hand. Hold and work. At that time, press the abutment part 9 of the branch holder 8 against the branch of the tree to be cut, hold the handle 13 firmly so that the anti-swing rod 3 does not move, and hold the handle body 2. Stroke up and down, sawtooth 12
Cut the above branch by. During cutting, when the handle body 2 is pulled downward, the saw teeth 12 catch on the branch to be cut, and due to the resistance, the branch (not shown) tends to swing in the sawing direction. However, the branch cannot move because it is stopped by the branch support 8, and in the end,
The sawtooth 12 smoothly bites into the branch.

The above-mentioned resistance due to the catching between the tooth 12 and the branch to be cut mainly occurs when the saw blade 1 moves in the sawing direction, that is, when the handle body 2 is stroked downward. This hardly occurs when the handle 1 moves in the saw feeding direction, that is, when the handle body 2 is stroked upward.

Therefore, when the saw body 1 moves in the sawing direction, the branch holder 8 functions very usefully by catching and stopping branches that are also trying to move in that direction.

Therefore, when the saw of this embodiment is used, when pruning the branches of a tall tree, the branches to be cut do not sway, and the cutting work can be carried out easily and easily.

FIG. 4 is a perspective view of a pruning saw employing a saw handle according to another embodiment of the present invention.

Referring to FIG. 4, this saw has 1.
It includes a handle body 2, a pipe 20 through which the handle body 2 is inserted, and a branch holder 8 attached to the upper end of the pipe 20. In this embodiment, the pipe 20 functions as a cutting auxiliary member and a movement guide member. In other words, pipe 2
The handle body 2 inserted into the pipe 20 can be stroked up and down along the inner surface of the pipe 20. At that time, in order to prevent the handle body 2 from freely rotating within the pipe 20, the cross-sectional shape of the handle body 2 is not a perfect circle but an ellipse or a polygon, etc., and the cross-sectional inner diameter of the pipe 20 is
It is preferable to have a shape that matches the cross-sectional shape of the handle body 2.

Alternatively, the pipe 20 may be formed with an elongated engagement groove 21 extending in its length direction, and the handle body 2 may be provided with an engagement protrusion 22 protruding from its circumferential surface. 21. In this way, the handle body 2 can stroke up and down in the length direction of the pipe 20 within the pipe 20, but can be prohibited from rotating in the circumferential direction of the pipe 20.

The branch support 8 is made by bending or bending a band-like member made of steel or synthetic resin, and both open ends thereof are fixed to the tip of the pipe 20 with screws 23 . The length of the branch holder 8 is selected to be an appropriate length in consideration of the length of the saw body 1, so that when the saw body 1 moves downward, the saw tooth "2" is attached to the branch holder. It is designed so that it does not come into contact with the tool 8.

Further, a notch 24 is formed on the front side of the upper end of the pipe 20. The notches 24 are formed so that the saw blade 1 can move downward, that is, so that the saw teeth 12 do not get caught on the pipe 20 when the saw blade 1 moves downward. .

The circumferential surface of the lower end of the pipe 20 is a handle portion 25 covered with an anti-slip rubber material, for example. During operation, the user operates the saw by, for example, gripping the handle portion 25 with his left hand and gripping the grip 5 of the handle body 2 with his right hand.

Note that instead of using the lower end of the pipe 20 as the handle part 25,
A handle projecting laterally may be attached to the lower end of the pipe 20, and the grip portion 5 of the handle body 2 may be attached to the lower end of the pipe 20 as shown in FIG.
As explained in the embodiment shown in FIG. 2, it may be curved in a certain direction to give it an easy-to-grip shape.

In the embodiment described with reference to FIG. 4, if the sawtooth 1 has a so-called replaceable blade type structure that is removable from the handle body 2, the replaceable blade type 1! ! For construction, handle body 2
A thumbscrew 26 as shown in FIG. 5 may be present at the tip of the holder. In such a case, this thumbscrew 26 and the pipe 2
In order to avoid contact with the pipe 20, the cut 24 formed at the upper end of the pipe 20 may be made wide and deep, as shown in FIG.

FIG. 6 is a side view of a saw employing a handle according to still another embodiment of the present invention, and an enlarged rear view of the main parts thereof. The handle of the saw shown in FIG. 6 includes a handle body 2, a cutting auxiliary bar 30, a movement guide member 31 provided between the handle body 2 and the cutting auxiliary bar 30, and a branch holder 8. ing.

The cutting auxiliary rod 30 is a long rod extending parallel to the handle body 2, and is provided with a branch holder 8 at its tip. A movement guide groove 32 is formed in the cutting auxiliary rod 30 in its longitudinal direction. In this embodiment, the movement guide groove 32 is connected to the cutting auxiliary rod 30.
Although there are a plurality of grooves extending in the length direction, it may be a long groove.

On the other hand, the movement guide member 31 includes an engagement protrusion 33 planted on the circumferential surface of the handle body 2 and a retaining ball 34 fitted to the tip of the engagement protrusion 33. The engaging protrusion 33 is passed through the movement guide groove 32 of the cutting auxiliary rod 30, and the retaining ball 34
This prevents the engagement protrusion 33 from coming off from the movement guide groove 32. Therefore, the handle body 2 is the cutting auxiliary rod 30.
A single stroke movement along the length of the cutting auxiliary rod 30 is possible without coming off the cutting auxiliary rod 30.

Note that the structure of the branch support 8 is the same as that of each of the embodiments described above, and therefore a description thereof will be omitted here.

In each of the above embodiments, the branch support 8 is described as a member located on both left and right side surfaces of the saw body 1, in other words, a member arranged so as to surround the saw body 1. It doesn't have to be structured. That is, the branch holder 8 is not limited to the above-described embodiments, as long as it can hold the branch to be cut so that the branch does not move during the cutting operation.

Further, in each of the above embodiments, a pruning saw has been described as a saw in which the saw handle according to the present invention is adopted, but the present invention is not limited to such saws, and can be applied to general use. It should be pointed out that it can be widely applied to handles of hand saws.

<Effects of the Invention> As described above, the present invention includes a handle body to which a saw blade is attached, a cutting auxiliary member extending parallel to the handle body, a workpiece receiving member attached to the cutting auxiliary member, Since the structure includes a movement guide member that guides the handle body along the cutting auxiliary member, when cutting an object with the saw blade, the object that is moving in the direction of sawing is guided to a predetermined position. It can be kept in place, allowing light and easy cutting work.

In particular, when the handle of the saw according to the present invention is adopted for a saw for pruning tall trees, it is possible to obtain a saw with improved workability and cutting ability.

[Brief explanation of the drawing]

FIG. 1 is a side view of a pruning saw employing a saw handle according to an embodiment of the present invention, FIG. 2 is a rear view of the pruning saw shown in FIG. 1, and FIG.
FIG. 4 is a perspective view of a pruning saw employing a saw handle according to another embodiment of the present invention. FIG. FIG. 6 is a diagram illustrating a saw employing a saw handle according to still another embodiment of the present invention, which does not show a modification of the tip of the saw handle according to another embodiment. In the figure, 1 is the saw blade, 2 is the handle body, 3 is the anti-swing rod, 8 is the branch holder, 9 is the contact part, 12 is the saw tooth, 20 is the pipe, and 30 is the cutting aid rod. figure. Patent applicant: U-M Industries Co., Ltd.

Claims (7)

[Claims] (1) A handle of a manual saw, comprising: a handle main body to which a saw blade is attached to the tip; a cutting auxiliary member extending parallel to the handle main body; and a cutting auxiliary member attached to the tip of the cutting auxiliary member; a workpiece receiving member having a contact portion, a part of which comes into contact with the workpiece; and a member for guiding the moving direction of the handle body along the cutting auxiliary member when the handle body is moved for cutting work. A saw handle comprising: a movement guide member that moves; and a saw handle. (2) The saw according to claim 1, wherein the cutting auxiliary member includes a pipe through which the handle body is inserted, and the movement guide member includes an inner peripheral surface of the pipe. pattern. (3) The saw handle according to claim 1, wherein the cutting auxiliary member includes a rod. (4) The saw handle according to claim 3, wherein the movement guide member includes a plurality of ring members fixed to the rod and through which the handle body can be inserted. (5) The movement guide member is characterized in that a part thereof is fixed to the handle body, and the other part includes a connecting body configured to slide along the rod body. A saw handle according to claim 3. (6) Claims 1 to 5, characterized in that the movement guide member includes an orientation function that prohibits rotation of the handle body and directs the handle body in a certain direction. A saw handle described in any of the above. (7) The object receiving member includes an orienting function that prohibits rotation of the saw blade and directs the saw blade in a certain direction. or fifth
A saw handle described in any of the above.