JPH085774Y2 - Sawtooth structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Purpose] (Industrial field of application) The present invention relates to an improvement of a saw handle.

(Prior Art) Before cutting wood or plywood with a saw,
It is usual to perform the blackening at the cutting point before construction, but in such a case, the sawdust generated during the cutting work inevitably accumulates at the blackening point, and the blacking is performed. It makes the place unknown. Of course, under such a condition, it is not possible to perform an accurate cutting work, and the worker has to inconvenience that he must constantly blow while breathing on the location.

As a saw for eliminating such inconvenience, there is a saw described in Japanese Patent Publication No. 62-36841.

(Problems to be solved by the invention) In this type of saw, the moving motion of the moving element built in the hollow portion blows out the air in the hollow portion toward the saw blade side and grinds it to the blacking portion. Although it is intended to prevent the child from accumulating, the conventional structure has a structure in which air is taken in from the air blowout port when the mover is moved to the rear side, resulting in a hollow structure. There is a risk that dust will be sucked into the inside of the unit and the smooth movement of the mover will be hindered.

The present invention is intended to solve such a problem found in the conventional structure.

[Structure] (Means and Actions for Solving the Problem) The present invention forms a hollow portion in a handle of a saw and
A moving element that can freely move in the hollow portion according to the movement of the handle is built in the hollow portion, and a through hole that communicates from the front to the rear is formed in the moving element, and the transparent portion is formed. With respect to the hole, while the moving element is advancing, the through hole is closed, and when the moving element is retracting, the opening and closing ben that releases the through hole is arranged, so that the dust inside the hollow part can be prevented. It is intended to prevent inhalation.

(Embodiment) Referring to the drawings, the structure of the handle portion of the saw according to the present invention will be described. The saw body 1 includes a saw blade 13 and a handle to which the saw blade 13 is attached, as shown in FIGS. 1 to 3. The handle portion 2 forms a space portion on the axial direction side along the center of the shaft portion, and has a tail plug hole 7 and an elastic thin plate piece at its rear end portion. Butt stopper 9 with buttocks Ben 8
And a hollow portion 3 is formed inside the handle 2 by this, and a pin is formed in the front portion of the hollow portion 3.
A back metal 11 is attached with 12, and the saw blade 13 can be held by the back metal 11. Further, from the front part of the hollow portion 3, the saw blade mounting metal fitting 11 is directed downward. An air outlet 10 having a shape is formed, and the air in the hollow portion 3 can be ejected from the outlet 10.

On the other hand, inside the hollow portion 3, a moving element 4 having a shape substantially equal to the vertical cross-sectional shape of the hollow portion 3 is inserted.
Is configured so that it can freely move inside the hollow portion 3 in accordance with the back-and-forth movement during the cutting work with a saw.
A through hole 5 communicating from the front side to the rear side is formed, and a thin opening / closing bend 6 formed of an elastic member is arranged at the front end portion thereof, whereby the movement of the moving element 4 is advanced. The through hole 5 is closed at some times, while the through hole 5 is opened at the time of retreat. That is, when the mover 4 is moved to the front side, the elasticity of the ben 6 itself causes the ben 6 itself to be closed, and the air in the hollow portion 3 is pushed to the front side and the air outlet 10 On the other hand, the opening / closing ben 6 formed on the moving element 4 is pushed out by the air accumulated in the rear part of the hollow part 3 and moves backward without sucking air from the air blowout port 10 while moving toward the rear side. It is configured so that it can.

[Effects] (Effects of device) The structure of the handle portion of the saw according to the present invention has the above-mentioned structure, and is deposited on the blacking portion by the movement of the moving element 4 arranged in the hollow portion 3. As a result of efficiently removing the saw blade, there is an advantage that an accurate cutting operation can be performed along the blacking portion, and further, when the slider 4 is moved to the rear side, it is formed on the slider 4. As a result of the automatic opening and closing of the opening / closing ben 6, the air is not sucked directly from the air blowout port 10 in which a lot of dust is scattered, so that there is an advantage that the smooth movement of the moving element 4 can be secured for a long period of time. Of.

[Brief description of drawings]

The accompanying drawings show an embodiment of the present invention,
1 is a front view showing the entire saw, FIG. 2 is a partially cutaway sectional view showing an operating procedure when the moving element 4 moves forward, and FIG. 3 is a part showing an operating procedure when the moving element 4 moves backward. It is a cutaway sectional view. 1 ... saw body, 2 ... handle, 3 ... cavity, 4 ... mover, 5 ... through hole, 6 ... Ben

Claims (1)

[Scope of utility model registration request] 1. A hollow portion 3 is formed in a handle portion 2, and a mover 4 which can freely move in the hollow portion 3 in accordance with the movement of the handle portion 2 is built in the hollow portion 3. A through hole 5 that communicates from the front to the rear is formed in the mover 4, and
It is characterized in that an opening / closing ben 6 is arranged with respect to the through hole 5 to close the through hole 5 when the mover 4 advances and to release the through hole 5 when retracting. Saw pattern structure.