JPH0621682Y2 - Electric saw with a chip recovery means - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an electric saw provided with a chip collecting means.

(Prior Art) In the interior work, an electric saw such as a hand-held saw or a jigsaw is used when opening a mounting portion of an electric appliance or the like on a finishing material such as a ceiling, a plaster board on a wall, or a decorative board. When the ceiling finishing material is cut with a saw, the chips are widely scattered on the floor surface to contaminate the floor surface, and there is a risk that the operator may inhale it or get in the eyes to impair his health.

In addition, the main shaft of the electric saw is provided with a dust seal to prevent dust, but such a dust seal cannot completely prevent the chips falling from above, and the chips adhere to the main shaft to prevent There was a case where it gradually invaded into the saw body through the gap between the dust seal to be covered and the main shaft, causing a failure.

(Problems to be solved by the invention) The present invention solves the above conventional problems and can reliably collect chips even when cutting ceiling finishing materials, etc. The present invention was completed in order to provide an electric saw equipped with a chip collecting means capable of reliably preventing the intrusion into the main body.

(Means for Solving the Problems) The present invention has a chip recovery case having a chip recovery port provided on the front plate, which is detachably attached to the front surface of the electric saw body, and the chip recovery case The collar plate is fixed to the middle part of the saw blade that protrudes through the mouth, and a retractable seal tube is installed inside the chip collection case so as to cover the middle part of the saw blade. It is characterized in that the part is pressed against the collar plate of the saw blade.

(Embodiment) Next, an embodiment of the present invention will be described in detail with reference to FIG. 1 and FIG.

(1) is an electric saw body that incorporates an electric part such as a motor and a transmission gear mechanism (not shown), and (2) is made of a transparent synthetic resin material detachably attached to the front surface of the electric saw body (1). This is a chip collecting case, and the chip collecting case (2) is provided with a through hole (4) for inserting a saw blade in the rear plate part (3) and a relatively large diameter cutting plate in the front plate part (5). A powder recovery port (6) is provided.

(12) is a saw blade that penetrates and protrudes through the chip collecting port (6) of the chip collecting case (2), and the saw blade (12) has a collar plate (13) at an intermediate position thereof. There is. On the other hand, the through hole of the chip collection case (2)
A base end portion of an expandable telescopic seal tube (8) fixed by the elastic force of the compression coil spring (7) is fixed to the inner hole edge of (4). The seal tube (8) is for covering the middle part of the saw blade (12), and is a short cylindrical bellows receiver with a collar made of ABS resin.
Insert the compression coil spring (7) between the (9) and the short tubular bellows receiver (10), and then install the bellows (11) made of cotton canvas between the bellows receivers (9) and (10). The bellows receiver (10) on the base end side is fitted and fixed to the through hole (4). The front end of the seal tube (8) is pressed against the collar plate (13) of the saw blade (12) by the elastic force of the compression coil spring (7). The saw blade (12) is detachably attached to the main shaft (14) of the electric saw body (1) while the middle portion of the saw blade (12) is covered with the seal tube (8), and the blade portion (15) is attached. It is projected forward from the chip recovery port (6).

Reference numeral (16) is an engagement frame having an L-shaped cross section formed on the outer surface of the electric saw body (1) for detachably attaching the chip collecting case (2) to the front surface of the electric saw body (1). , Chip collection case (2)
It engages with an engaging portion (17) formed on the rear plate portion (3). In order to maintain the engaged state, it is preferable that the tip end of the push screw screwed from the outside of the engaging frame (16) is tightened and brought into contact with the engaging portion (17).

In the above embodiment, the seal cylinder (8) is provided with the compression coil spring (7), but the seal cylinder (8) may be any expandable and contractible type, and may be, for example, a rubber bellows. Good.

(Operation) With this structure, the motor of the electric saw body (1) is driven to reciprocate the spindle (14) and the saw blade (6) attached to the spindle (14) reciprocates. Cutting a finishing material such as a plaster board on a ceiling or a wall is similar to that of a conventional electric saw. However, according to the present invention, a chip collecting case (2) is detachably attached to the front surface of the electric saw body (1), and is provided on the front plate part (5) of the chip collecting case (2). From the chip collection port (7) to the saw blade (1
Since the blade part (15) of 2) is projected, the chips generated when this blade part (15) cuts the finishing material etc. of the ceiling fall downward and from the chip recovery port (6). It will be stored in the chip collection case (2). Therefore, not only does the cutting dust not scatter during the ceiling work to contaminate the floor surface as in the conventional case, but also the worker does not suck the cutting dust or get in the eyes.

The saw blade (12) is equipped with a collar plate (13).
Since the front end of the seal tube (8) is compressed by the elastic spring of the compression coil spring (7) in (3), when the saw blade (12) is pulled toward the electric saw body (1), the collar plate (13 ) Completely closes the opening of the seal tube (8) while compressing the seal tube (8) against the elastic force of the compression coil spring (7), and conversely, the saw blade (12) causes the electric saw. The sealing tube (8) is compressed coil spring (7) even when going away from the main body (1).
And the opening end follows the collar plate (13), the opening of the seal tube (8) is also closed by the collar plate (13). As a result, the cutting chips are completely sealed by the seal tube (8) and do not enter the inside of the electric saw body (1), which does not cause a failure.

Furthermore, when chips collect in the chip collection case (2),
If you remove the saw blade (12) from the main shaft (14) and then remove it from the seal tube (8), the chip collection case (2) can be removed from the front of the electric saw body (1). Can be easily discarded.

Incidentally, as in the embodiment, if the step portion (5a) is formed on only one side from the central portion of the front plate portion (5) and one side is allowed to escape, a material such as a gypsum board that easily scratches the surface is cut. In this case as well, the cut-off side has a contact mark on the front plate portion (5), but it is possible to prevent the contact mark on the surface of the gypsum board or the like on the left side.

(Invention of Invention) As is apparent from the above description, the present invention can accurately collect chips generated during cutting, and
As it is possible to reliably prevent chips from entering the transmission saw body, it is possible to eliminate the problems of conventional transmission saws.
Its practical value is extremely large.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of the present invention, and FIG. 2 is a partially cutaway perspective view showing the disassembled state of the main part of the same. (1): Electric saw body, (2): Chip collection case, (5): Front plate part, (6): Chip collection port, (8): Seal tube, (12): Saw blade, (1
3): Tsuba board.

Claims (1)

[Scope of utility model registration request] 1. A chip collecting case (2) having a chip collecting port (6) on a front plate (5) is detachably attached to the front surface of an electric saw body (1), and the chip collecting case is also provided. The collar plate (13) is fixed to the middle part of the saw blade (12) protruding through the chip recovery port (6) of (2), and the inside of the chip recovery case (2) is flexible. The seal cylinder (8) is provided so as to cover the middle portion of the saw blade (12), and the front end of the seal cylinder (8) is brought into pressure contact with the collar plate (13) of the saw blade (12). An electric saw equipped with a chip collecting means.