JP2002361603A - Saw - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily manufacture a saw blade of a strong stiffness at a low cost to solve the problem that since the saw blade is formed thin, has a low stiffness; since especially a part near a handle is narrow in a width, it is bent largely in use; in order to conquer such a defect, a thickness of a part near the handle of the saw blade is increased and it is gradually thinned as goes to a tip; and a cost for changing gradually the thickness of the saw blade mounts up to in crease considerably high a cost of the saw. SOLUTION: A reinforcing plate 2 for reinforcing a part in front of a shank part 3 of the saw blade is fixed to the saw blade and the reinforcing plate 2 has a part 6 tapered to the end.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a saw for cutting wood.

[0002]

2. Description of the Related Art A saw plate has a drawback that it has a low rigidity because it is formed to be thin, and in particular, a portion close to a handle has a narrow width so that it is largely bent when used. Conventionally, in order to overcome such disadvantages, the thickness of the portion near the handle of the saw plate has been increased, and gradually reduced toward the tip.

[0003]

The conventional saw plate has the above-mentioned structure, but has the disadvantage that the cost for gradually changing the thickness of the saw plate increases and the price of the saw increases considerably. there were. Then, an object of the present invention is to manufacture a strong saw plate easily and at low cost.

[0004]

According to the first aspect of the present invention, a reinforcing plate for reinforcing a portion of the saw plate in front of the saw is fixed to the saw plate, and the reinforcing plate goes forward. , And has a portion that changes gradually so as to have a smaller width. According to a second aspect of the present invention, the saw plate is composed of a saw plate main body and a reinforcing plate, and the saw plate main body has no komi and the komi is formed as a part of the reinforcing plate. It is.

According to a third aspect of the present invention, the neck of the saw plate body and the neck of the reinforcing plate almost entirely overlap each other, and the reinforcing plate is formed so that the width in front of the neck gradually decreases as going forward. The reinforcing plate extends slightly to the front of the center of the saw plate body. A fourth aspect of the present invention has a configuration in which the width near the front end of the above-mentioned reinforcing plate does not change and is substantially parallel. The invention applies to both single-edged and double-edged saws. According to a seventh aspect of the present invention, the means for fixing the reinforcing plate to the saw plate or the saw plate main body is bonding by an adhesive.

[0006]

The present invention is constructed as described above, and a reinforcing plate for reinforcing a portion in front of the saw board is fixed to the sawing plate, and the reinforcing plate gradually moves toward the front. Has a portion that changes so as to be narrower.
Since the reinforcing plate need only be fixed to the sawing plate by bonding or the like, the reinforcing plate can be easily attached. Further, the reinforcing plate has a portion that changes so as to gradually decrease in width as going forward. Therefore, the strength of the reinforcement by the reinforcing plate gradually decreases as going forward, so the saw plate does not bend sharply at the boundary between the part with and without the reinforcing plate during use, so it can be bent with a smooth curve, This is very easy for the user to handle.

According to a second aspect of the present invention, the sawing plate is composed of a sawing plate main body and a reinforcing plate, and the sawing plate main body does not have a knit, and the knit is formed as a part of the reinforcing plate. Therefore, the knits are not doubled and have the same thickness as a normal saw plate, so that the conventional handle can be used as it is. If the knits are double, the cost will be high due to the need to specially manufacture a handle having a groove into which such thick knits can be inserted.

According to a third aspect of the present invention, the neck portion of the saw plate body and the neck portion of the reinforcing plate substantially entirely overlap each other, and the reinforcing plate is formed such that the width in front of the neck portion gradually decreases as going forward. The reinforcing plate extends slightly before the center of the saw plate body. A normal sawing plate has a neck portion narrower than the blade portion between the blade portion and the press, and this neck portion is most easily bent. If the neck is entirely double, the weakest part of the sawing plate can be sufficiently reinforced. Further, since the width of the blade portion increases as it goes forward, the strength similarly increases as it goes forward. Correspondingly, the reinforcing plate has been changed so that the part before the neck gradually narrows as it goes forward,
The strength is averaged and it is easy to handle.

According to a seventh aspect of the present invention, the means for fixing the reinforcing plate to the sawing plate or the sawing plate main body is bonding by an adhesive. At the time of welding, a gap may be formed between the saw plate or the saw plate body and the reinforcing plate, and there is a possibility that sawdust or the like may be clogged. On the contrary,
The method of bonding with an adhesive is a simple operation, and is excellent in that sawdust and the like are not clogged at all.

[0010]

Embodiments of the present invention will now be described with reference to the drawings. FIGS. 1 to 4 show a single-edged saw, in which the saw plate is composed of a saw plate main body 1 and a reinforcing plate 2,
It is formed as a part of. The neck 4 of the saw plate body and the neck 5 of the reinforcing plate entirely overlap, and the reinforcing plate 2 is
The front portion is formed in a narrow portion 6 whose width gradually decreases as going forward, and extends along the back 7 to a position slightly before the center of the saw plate body 1. The width near the front end of the narrow portion 6 does not change and is almost parallel.

For fixing the saw plate body 1 and the reinforcing plate 2, it is preferable to use a method in which the overlapped portion is entirely adhered with an adhesive, but the present invention is not limited to this, and other methods such as welding may be used. Absent. However, as described above, at the time of welding, a gap is formed between the saw plate main body 1 and the reinforcing plate 2, and there is a possibility that sawdust or the like may be clogged. On the other hand, the method of bonding with an adhesive is a simple operation, and is excellent in that no sawdust or the like is clogged at all.

FIGS. 5 to 8 show a double-edged saw. Like a single-edged saw, the saw plate comprises a saw plate main body 8 and a reinforcing plate 9, and
0 is formed as a part of the reinforcing plate 9. The neck 11 of the saw plate main body and the neck 12 of the reinforcing plate entirely overlap,
The reinforcing plate 9 is formed in a narrow portion 13 in which a portion in front of the neck portion 12 gradually becomes narrower as going forward, and is located slightly before the center of the saw plate body 8 along the center line of the saw plate body 8. Extends to The width near the front end of the narrow portion 13 does not change and is substantially parallel. The fixing method of the saw plate body 13 and the reinforcing plate 8 is the same as that of the single-edged saw described above.

[Brief description of the drawings]

FIG. 1 is a front view of a saw blade of a single-edged saw of the present invention.

FIG. 2 is a rear view of the saw blade of the single-edged saw of the present invention.

FIG. 3 is a front view of the saw plate body.

FIG. 4 is a front view of a reinforcing plate.

FIG. 5 is a front view of the saw blade of the double-edged saw of the present invention.

FIG. 6 is a rear view of the saw blade of the double-edged saw of the present invention.

FIG. 7 is a front view of the saw plate body.

FIG. 8 is a front view of a reinforcing plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Saw board main body 2 Reinforcement board 3 Komi 4 Neck 5 Neck 6 Narrow section 7 Back 8 Saw board main body 9 Reinforcement board 10 Komi 11 Neck 12 Neck 13 Narrow section

Claims (7)

[Claims] 1. A reinforcing plate for reinforcing a portion of a saw plate in front of a komi is fixed to the saw plate, and the reinforcing plate gradually changes in width as going forward. Saw characterized by having 2. The saw according to claim 1, wherein the sawing plate comprises a sawing plate body and a reinforcing plate, wherein the sawing plate body does not have a knit, and the knit is formed as a part of the reinforcing plate. 3. A neck portion of the saw plate body and a neck portion of the reinforcing plate almost entirely overlap with each other, and the reinforcing plate is formed so that a portion in front of the neck portion becomes gradually narrower as going forward.
3. The saw according to claim 1, wherein the reinforcing plate extends a little before the center of the saw plate body. 4. The saw according to claim 1, wherein the width near the front end of the reinforcing plate does not change and is substantially parallel. 5. The saw according to claim 1, wherein the sawing plate has a single edge and the reinforcing plate extends along the back of the sawing plate. 6. The saw according to claim 1, wherein the saw plate is a double-edged blade, and the reinforcing plate extends substantially along the center line of the saw plate. 7. The saw according to claim 1, wherein the means for fixing the reinforcing plate to the sawing plate or the sawing plate main body is bonding with an adhesive.