JPH0595701U - Saw pattern - Google Patents

Abstract

(57) [Summary] [Purpose] In a foldable saw handle, the purpose is to fix the saw blade at an arbitrary angle to the handle so that cutting work can be performed. [Structure] A spine supporting a saw blade can be rotatably attached to a handle, and when the operating knob is tightened, the concavo-convex portions can be engaged to fix the rotation of the spine. Saw pattern configured in.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a foldable saw handle.

[0002]

[Prior Art]

 In the case of folding saws that have been commonly used in the past, holes are formed in the vicinity of the tip of the handle and the base of the saw blade to insert the fulcrum shafts, respectively, and when attaching the saw blade to the handle, The fulcrum shaft is inserted into the hole so that it can be rotated, and when in use, the hook attached to the handle is hooked into the recess formed on the back of the saw blade to rotate the saw blade. It is usually configured so that the motion state can be fixed.

[0003]

[Problems to be solved by the device]

 In this type of folding saw, if the handle and saw blade are connected by a fulcrum shaft, the fulcrum shaft must be removed to disassemble the entire saw when replacing the saw blade. If the structure is such that the blades are fixed by the hooks attached to the handle when using the saw, the fixing operation is troublesome and the saw blade can be fixed to the handle only at a specific position. There is the inconvenience of not having it. This type of foldable saw is often used for pruning work of plant trees, etc., and if the angle between the handle and the saw blade can be freely set depending on the situation at the time of work, it is often very easy to work. However, if the structure is such that the saw blade is fixed with a hook when using it, it cannot be divided into the angles that make it easy to use according to the working conditions. The present invention seeks to eliminate such drawbacks found in conventional configurations.

[0004]

[Means for Solving the Problems]

 In this invention, a back metal for supporting the saw blade is rotatably attached to the handle, and the back metal itself can be fixed at any position, so that the saw blade can be replaced with one touch. It aims to be able to carry out work by fixing the saw blade at an arbitrary position at the time of work.

[0005]

【Example】

 One embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, the saw handle main body includes a handle 1 and a back metal 3 capable of holding a saw blade 2 and a handle 1. In contrast, when the back metal 3 is rotatably attached, the concavo-convex portion 7 formed on the support 5 and the concavo-convex portion 11 formed on the back metal 3 are engaged by tightening the operation knob 4. It is a composition that can be combined. That is, as shown in FIGS. 1 to 3, the handle 1 has a support portion 5 formed by arranging two plate bodies at the tip end portion thereof so as to face each other, and at the same time, the support portion 5 is formed. A hole 8 is formed in the center of the hole 5.5, and the peripheral portion of the hole 8 is subjected to press working to form the uneven portion 7 on the inner side surface of the plate body 5. It has become. As shown in FIG. 3, the back metal 3 is configured such that a metal plate is bent from the center and bent, and the base of the saw blade 2 can be clamped by inserting the saw blade 2 in the gap. The structure is such that the holes 10 are formed in the base portion, and the uneven portions 11 radially arranged by pressing are formed around the holes 10. The handle 1 and the back metal 3 constituting the main body of the saw handle are configured as described above, but the back metal 3 is attached to the handle 1 as shown in FIG. After inserting the base portion of the back metal 3 between them, and after making the hole 8 formed in the support portion 5 and the hole 10 formed in the back metal 3 coincide with each other, the head is placed in the hole 8 and the hole 10. This is done by inserting the bolt 6 having the screw 12 and screwing the operation knob 4 having the screw hole 9 at the tip of the bolt 6. As a result, when the operating knob 4 is tightened by rotating it, the concave-convex portion 7 formed on the support portion 5 and the concave-convex portion 11 formed on the back metal 3 are brought into engagement with each other and the handle 1 and the back 1 are engaged. While the operation knob 4 is loosened while fixing to the gold 3, the engaging state of the uneven portion 7 formed on the support portion 5 and the uneven portion 11 formed on the back metal 3 is released, and the handle 1 is attached. On the other hand, the back metal 3 becomes rotatable. In the case of the above configuration, the operation knob 4 is tightened to tighten the gap portion of the back metal 3 supporting the base portion of the saw blade 2, and as a result, when the operation knob 4 remains tightened, If the blade 2 cannot be replaced, and the operating knob 4 is tightened, the gap of the gap portion may be deformed. FIG. 4 and FIG. 5 show another embodiment for eliminating such a situation. That is, in FIG. 4, a rotation preventing angular portion 14 and a shaft portion 15 thicker than the diameter of the threaded bolt 6 are formed on the head 12 side of the bolt 6, while one side of the back metal 3 is formed. The hole is formed so that the large-diameter portion 15 can be inserted therein, and the hole on the other side is formed so that the bolt 6 having the thread can be inserted therein, and when the bolt 6 is inserted into the hole 10 of the back metal 3. In this case, the tip surface of the shaft portion 15 is brought into contact with the inner wall surface portion of the back metal 3 so that the space of the gap portion 16 of the back metal does not change even when the operation knob 4 is tightened. 1 shows a case in which the shaft portion 15 and the recess 13 of the saw blade 2 are engaged with each other. Further, in FIG. 5, a seat plate 17 having a shape capable of being engaged with the recess 13 of the saw blade 2 is arranged in the gap portion 16 of the back metal 3, and the head plate 12 and the angular portion 14 are provided therein. It shows a case where the bolt 6 is inserted. The main body of the saw handle according to the present invention has the above-described structure, and the saw blade 2 is attached to the handle 1 by inserting the base of the saw blade 2 from the lower side of the back metal 3 as shown in FIG. After the recess 13 formed in the saw blade 2 is put on the bolt 6, the entire saw blade 2 is rotated upward so that the back of the saw blade 2 is in contact with the groove bottom of the back metal 3. The saw blade 2 is removed by forcibly rotating the saw blade 2 downward.

[0006]

[Effect of the device]

 The saw handle main body according to the present invention has the above-mentioned structure, and when the saw blade is cut off, the whole saw blade can be replaced with a new saw blade by an extremely simple operation, and the rear part has obstacles. However, even in the case where the rear end of the saw handle hits the obstacle and the cutting operation cannot be performed in a normal saw, the saw blade 2 is rotated downward as shown in FIG. By fixing it in this state, the cutting work can be performed easily, and in the case of roof roofing work, when the sun struck on the nose board is cut off, as shown in FIG. By rotating and fixing the upper part to the upper side, there is an advantage that the rear end of the handle does not come into contact with the plate surface and the cutting operation can be easily performed. Furthermore, since the saw blade 2 can be fixed by folding it in the handle side, the saw blade does not open unintentionally when carried, and there is an advantage that the safety when not in use can be improved. is there.

[Brief description of drawings]

FIG. 1 is a front view showing a state in which a saw blade is attached to a saw handle according to the present invention.

FIG. 2 is an exploded perspective view showing each constituent member of the saw handle according to the present invention and an assembling procedure thereof.

FIG. 3 is a partially cutaway view showing a configuration of an inner side portion of a support portion.

FIG. 4 is a vertical cross-sectional view showing another embodiment of a mounting portion of a supporting portion and a back metal according to the present invention.

FIG. 5 is a vertical cross-sectional view showing another embodiment of a mounting portion of a supporting portion and a back metal according to the present invention.

FIG. 6 is a front view when a handle is rotated.

FIG. 7 is a front view when the handle is rotated.

FIG. 8 is a front view showing how the saw blade is attached to the handle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Handle 2 Saw blade 3 Back metal 5 Support part 6 Bolt 7 Uneven part 8 Hole 10 Hole 11 Uneven part

Claims (1)

[Scope of utility model registration request] 1. A handle 1 having a support portion 5 having a concavo-convex portion 7 and a hole 8 formed at its tip, and a saw blade 2 that can be held in the front, and a concavo-convex portion 11 and a hole on the front side. Back metal with 10 and 3
The bolt 1 is inserted into the hole 8 of the support portion 5 and the hole 11 of the back metal 3 to make the handle 1 and the back metal 3 rotatable, and the support portion 5 or the back metal 3 The saw handle is characterized in that the concave and convex portion 7 formed on the support portion 5 and the concave and convex portion 11 formed on the back metal 3 can be engaged with each other by pressing.