JPH0632002U - saw - Google Patents

Abstract

(57) [Summary] [Purpose] A Japanese saw that has a cutting function when the saw blade is retracted. In order to improve the maintenance of directionality in the vertical direction and the retracting direction, it is possible to cut wood quickly and accurately. The purpose is to [Construction] A saw characterized in that a grip portion bent in a "D" shape is attached to a front end portion of a saw blade which is narrowed toward the front side.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to an improvement of a hand-operated saw.

[0002]

[Prior art]

 In Japanese-style hand-operated saws that are commonly used in Japan, teeth are formed in a shape that functions to cut wood when the saw is pulled toward you, and the saw blade The shape is formed so that it gradually narrows toward the front side, and it is usually configured with a rod-shaped handle with an elliptical cross-section. . Since such Japanese-style saws are made by cutting, the thickness of the saw blade is thin (about 0.6 mm), and therefore the volume of the removed part of the saw is small, and wood can be cut efficiently. There is a feature. On the other hand, in Western-style hand-operated saws used in Western countries, teeth are formed in a shape that functions to cut wood when the saw is pushed forward. In general, the shape of the shape is such that it gradually narrows toward the front side, and a handle with a window hole large enough to put a hand on is attached to a wooden board. is there. In this type of Western-style saw, the thickness of the saw blade is set thick (about 1.4 mm) in order to prevent buckling of the saw blade due to pushing, and the cutting exclusion volume Has the characteristic of becoming large.

[0003]

[Problems to be solved by the device]

 The Japanese saw, which is formed to perform the function of cutting wood when pulling the saw toward you, has the advantage of being able to perform accurate work when cutting wood, but its handle has a rod-like shape. As a result, it is difficult to apply a force in the cutting direction, and the cutting ability is inferior to that of a Western-style saw.In addition, a long handle is pulled along the side of the body, so the direction in the pulling direction It has the disadvantage of poor maintainability and, in addition, the cross-sectional shape of the handle is an elliptical shape, which is also inferior in maintainability in the vertical direction. Therefore, if you attach a Western-style saw handle to a Japanese-style saw blade, you will be able to perform accurate cutting of wood and at the same time obtain a saw with good cutting efficiency. When a handle with a window hole for inserting a hand is attached to a wooden board, the front lower end of the handle comes into contact with the wood and interferes with it when cutting wood. The problem is that the entire blade cannot be used effectively.

[0004]

[Means for Solving the Problems]

 According to this invention, a thin metal plate is bent into a "D" shape at the base of a saw blade which is narrowed toward the front side, and the vertical part has roundness before and after. The purpose of the present invention is to eliminate the above-mentioned drawbacks found in the saw having the conventional structure by adopting the structure in which the grip having the shape of the grip is attached.

[0005]

【Example】

 One embodiment of the present invention will be described with reference to the drawings. A saw body 1 has a saw blade 2 formed so as to become gradually narrower toward the front side as shown in FIG. 1 and FIG. And a grip portion 3 in which a thin metal plate 4 is bent into a “D” shape, and rounded grips 5 and 6 are arranged in front of and behind the vertical portion thereof. That is, the grip 3 is attached and fixed to the side base. That is, as shown in FIGS. 1 and 2, the saw blade 2 forms saw teeth on the upper and lower portions of the steel plate that gradually become narrower from the tip side toward the hand side, and the front end portion thereof. That is, a vertical side portion is formed on the. As shown in FIGS. 1 and 2, the grip portion 3 is formed by bending a thin metal plate 4 into a “D” shape so that a hand can be inserted into the grip portion 3 and the vertical position of the vertical portion. The grips 5 and 6 having roundness are arranged in the holes 5, and the holes 9 and 9 formed in the grip 5, the holes 10 and 10 formed in the vertical portion of the metal plate 4, and the holes 11 and 11 formed in the grip 6 are aligned with each other. After the condition, the bolts 8 and 8 are inserted from the holes of the grip 5 so that the rounded grips 5 and 6 are integrally attached to the vertical portion of the "D" shaped metal fitting. Further, the saw blade support plate 7.7 is extended by welding the base of the triangular metal plate piece to the front part of the metal fitting bent in the “D” shape. Of. The saw blade 2 and the grip portion 3 which compose the saw according to the present invention have the above-described configuration. When the grip portion 3 is attached to the saw blade 2, the base portion of the saw blade 2 is supported by the saw blade. It is carried out by inserting it into a gap 12 formed between the plates 7 and 7 and then integrally fixing it by a method such as spot welding.

[0006]

[Effect of device]

 The saw body 1 according to the present invention has the above-mentioned configuration and has an advantage that it can accurately and quickly process wood. That is, the saw body 1 according to the present invention is configured such that the shape of the saw blade is gradually narrowed from the tip toward the rear, and the wood is cut when the saw blade is pulled in. The saw blade can be made thinner, which reduces the removal volume of the cutting part, which can cut wood accurately and quickly, and the frame of the handle that forms the handle has a thin plate shape. As a result of the structure being formed by bending the metal plate into a "D" shape, it is possible to perform cutting work on the center line of the worker's body without disturbing the handle, and to always perform correct pulling. The advantage is that the direction can be maintained. In addition, the vertical handle makes it easy to detect the inclination of the saw blade to the left and right, and it is easy to apply the force in the vertical direction of the saw blade. It is possible to achieve a powerful work effect comparable to that of the conventional Japanese saw, and since it is not necessary to bend and cut the wrist like the conventional Japanese saw, the palm part of the palm part can be compared to the conventional Japanese saw. Fatigue can be made much smaller, and because the length of the entire saw is shortened, it is easy to carry and convenient to store. Also, since the frame of the handle is made low-profile, the lower end of the grip does not interfere with the contact with the wood, making effective use of the entire saw blade and efficiently It has the advantage that it can be cut.

[Brief description of drawings]

FIG. 1 is a perspective view showing an entire saw according to the present invention.

FIG. 2 is an exploded perspective view showing a configuration of each component member of the saw according to the present invention.

[Explanation of symbols]

 1 Saw body 2 Saw blade 3 Grip 4 Metal plate 5 Grip 6 Grip 7 Saw blade support plate

Claims (1)

[Scope of utility model registration request] 1. A grip 5 having a saw blade 2 and a thin metal plate 4, each of which has a width narrowed toward the front side, is bent into a "D" shape, and a rounded portion is formed in the front and rear of its vertical portion. The grip portion 3 having a structure in which 6 is arranged and the saw blade support plates 7 and 7 are extended in front of the bent portion, and considerably when the saw blade 2 is attached to the grip portion 3. A saw characterized in that the base portion is inserted and fixed in a gap portion 12 formed between the saw blade support plates 7 and 7.