JPH04153003A - Danger prevention device for electric saw - Google Patents

Abstract

PURPOSE:To enable an electric saw to travel on straight without any lateral movement by installing a straight rudder on a mounting fitment protruding on a rear frame of a traveling plate. CONSTITUTION:A traveling plate 6 is mounted on a bottom face section of an electric saw main body 1 and sawteeth 2 protruding to be able to cut donwardly from an opening of the traveling plate 6, and the upper half of said sawteeth 2 forms a main body l by means of a metal case 8 to prevent the danger and covers almost in the semicircular shape. A double mounting piece 11 is installed on a mounting fitment 9 standing on a side frame of the traveling plate 6 on the rear straight line of the sawteeth 2, while a guide piece 15 comes in and out from the main body 1 on the back face to place the double mounting piece stably on the traveling plate 6. The upper end of a straight rudder 10 is inserted into the mounting piece 11, and the rear edge of the rudder 10 is pressed by a press spring 13 installed on the upper end of the mounting fitment 9. Thus the straight rudder 10 is positioned on the rear of straight line to the sawteeth 2 and cuts and travels on straight without any risk of moving back.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a safety device for an electric saw which attempts to prevent the electric saw from moving straight or sideways.

[Conventional technology]

With conventional electric saws, the support rod is pulled out horizontally from the front and rear sides of the running board, a ruler is attached to the tip parallel to the side frame of the running board, and the ruler is placed against the side of the workpiece, such as a wooden board, to determine the cutting location. The wooden board is cut by adjusting the distance between the two.

[Problem to be solved by the invention]

Conventional electric saws do not have a straightening device, and even if they do have one, when cutting with a ruler along the side of the wooden board, changes in the side may cause the saw to lose its direction of movement, even if the saw blade is cutting smoothly. However, due to the serrations and wood grain, or the irregularity of the hand,
There is a problem in that the progress of the cutting is hindered and the cutting is reversed due to the reaction, causing unexpected damage to the operator.

Therefore, an object of the present invention is to cut a wooden board using an electric saw, so that even if there is an obstacle to the extent that the wooden board is cut, the invention will proceed straight without going backwards. The purpose of the present invention is to provide an electric saw that can be inserted into a cut groove and go straight, so there is no lateral movement and the electric saw can go straight straight smoothly.

(Means for Solving !!Ill) In order to achieve the above object, the electric saw of the present invention houses saw teeth attached to the rotating shaft of the motor in the prime mover connected to the electric saw body, A running plate is adjustably attached to the lower surface of the electric saw body, and a portion of the saw teeth is formed so as to protrude downward from an opening formed in the longitudinal direction of the running plate.

A mounting bracket is provided protruding from the rear frame of the traveling plate at a position on a straight line with the sawtooth, a straight rudder is attached to the mounting bracket with a pin, and its upper surface is pressed by a presser spring.

Further, in order to reliably press the straight rudder, it is effective to provide a locking part on the straight rudder and lock the tip of the spring to the locking part.

[Effect]

When the saw blade is rotated by the drive of the motor of the safety device in the electric saw configured as described above and the straight rudder is inserted with the handle into the cutting groove where the plate to be processed is cut and the cutting is continued, the straight rudder rotates in both directions. Since the saw blades are narrowed by the groove and act as a rudder, they move in a straight line and cut without any sideways swing.

〔Example〕

Examples will be described with reference to the drawings.

In Figures 1 to 3, there are saw teeth inside the electric saw body.
] is supported by the rotating shaft of the motor (2) and rotated by operating the switch (4). The switch (2) is attached to the handle (2) and turns on and off the rotation of the sawtooth (2). A running plate (6) is attached to the bottom of the electric saw body (2), and the running plate (6) has a vertically elongated opening (6) bored in the direction of movement in which the saw blade (2) is inserted. Sawtooth Q below
) protrudes so as to be cuttable, and the upper half of the sawtooth (2) is covered by a metal case (8) to form an electric saw body (2) in a semicircular shape to prevent danger. Q) is a mounting bracket, which is installed upright on the side frame of the running plate (6) on a straight line behind the sawtooth (2), and the mounting bracket Q) has a double-sided mounting piece (11).
A guide piece (15) is installed on the back side of the main body (1) so that it can be placed on the running plate (6). Then, insert the upper end of the straight rudder (10) into the mounting piece (11) so that it is pivotally supported by the mounting pin (12) and hangs down from the mounting bracket Q).
The straight rudder (
10) Press the trailing edge.

In addition, although a locking portion (14) is formed on the trailing edge of the straight rudder (10), the retainer spring (L3) ensures that the straight rudder (10)
Most preferable for pressing.

〔Effect of the invention〕

Since the present invention is configured as described above, it produces the effects described below.

When the straight rudder installed at the rear of the running plate is inserted into the cutting groove and the cutting operation is performed, the straight rudder is flat and does not oscillate laterally in the groove, and the straight rudder is always rearward in a straight line with the sawtooth. Since it moves in a straight line and protrudes downward from the cutting groove of the workpiece, it moves forward in a straight line to efficiently cut boards, etc., and maintains safety without the risk of running backwards. It has the effect of

[Brief explanation of drawings]

FIG. 1 is a side view of the device of the present invention, FIG. 2 is a plan view of the same as above,
FIG. 3 is an enlarged stomach view of the main parts of the present invention. l-・Electric saw body 2・・Sawtooth 6・・・Travel plate 10−・Straight rudder 13−・・Press spring

Claims (1)

[Claims] 1. In the electric saw body (1), a mounting bracket (9) is attached to the side frame of the running plate (6) on a straight line behind the saw blade (2), and a straight-travel rudder is attached to the bracket (9). (10) with the mounting pin (12), and press the straight rudder (10) from above with the spring (13).
) is pressed down and moved straight along the cut groove. 2. The danger prevention device for an electric saw as set forth in claim 1, wherein a notch is provided at the rear edge of the straight rudder (10) and a presser spring (13) is press-locked to the notch.