JP2004268598A - Portable dust collecting circular saw - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the visibility of an cutting edge while enhancing workability in a portable dust collecting circular saw. <P>SOLUTION: The portable dust collecting circular saw is equipped with a saw blade for cutting a material to be cut, a main body having an electromotor for driving the saw blade built therein, the base attached to the lower part of the main body and provided so as to protrude the lower side of the saw blade from the under surface of the base and a saw cover for almost covering the upper surface part of the base of the saw blade. This portable dust collecting circular saw also has the support cover attached to the wall part of the saw cover, the illumination device held to the support cover and a transparent member located between the saw blade and the illumination device and the cutting edge of the saw blade is illuminated by the light emitted from the illumination device through the transparent member. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

  TECHNICAL FIELD The present invention relates to a portable dust collecting circular saw having improved visibility of a cutting edge of a saw blade.

  As shown in FIG. 3, a portable dust collecting circular saw is cut using a guide as shown in FIG. 3, and a black line is cut on the material to be cut as shown in FIG. There are ways to do that.

  In the case of the former working method, the cutting edge 2a of the saw blade 2 is aligned with the cutting position of the workpiece 1 as shown in the figure, and the guide surface 3a of the guide 3 is brought into contact with the side surface 1a of the workpiece. 3 is adjusted and fixed, and then the saw blade 2 is rotated to cut the guide surface 3a along the side surface 1a of the material 1 to be cut.

  In the case of the latter working method, as shown in the figure, a black line 4 is drawn on the material 1 to be cut, and cutting is performed while the cutting edge 2a of the saw blade 2 is aligned with the black line 4. In this case, the position where the operator looks at the cutting edge is seen from the opposite side of the main body with respect to the saw blade 2 as shown by the arrow in FIG.

  In the cutting operation of the portable dust collecting circular saw as described above, it is necessary to confirm the position of the cutting edge during the cutting operation, and it is important that the cutting edge is easy to see for accurate cutting operation.

  On the other hand, it is important for the portable dust collecting circular saw to collect dust so that chips generated at the time of cutting are not scattered as much as possible. The saw cover 5 covers almost the entire saw blade 2 above the base 6. ing.

  In particular, the cutting edge 2a of the saw blade 2, which intersects with the base 6, which is a source of cutting chips, is covered by the upper surface of the base 6 and the saw cover 5 with as little gap as possible. In the circular saw, the saw cover 5 is made of two parts so that the cutting edge 2a is as easy to see as possible, and the saw cover 2 is made transparent in the direction in which the operator generally looks at the cutting edge, that is, the portion of the saw cover 2 opposite to the body with respect to the saw blade 2. The device was ingenious.

  As described above, in the conventional portable dust collecting circular saw, the entire surface opposite to the main body of the saw cover 5 is made transparent or the cutting edge 2a near the intersection of the saw blade 2 and the base 6 so that the cutting edge can be seen as easily as possible. However, since the cutting edge 2a of the saw blade 2 is almost covered, the cutting edge is used when working in a dark place such as a room or when cutting chips adhere to the transparent portion. 2a becomes very difficult to see.

  In order to solve this problem, there is a method of illuminating the vicinity of the cutting edge 2a with a light from above the main body. However, in a configuration in which the outer periphery of the saw cover 5 is illuminated by a light, the inside of the saw cover 5 remains dark. For this reason, the base 6 and the like adjacent to the transparent portion of the saw cover 5 are reflected, and a problem that the cutting edge 2a in the saw cover 5 is difficult to see occurs.

  An object of the present invention is to provide a portable dust collecting circular saw capable of solving the above-mentioned objects, improving the visibility of the cutting edge, and improving the workability.

  A feature of the present invention is a saw blade for cutting a material to be cut, a main body having a built-in electric motor for driving the saw blade, and a base mounted below the main body. In a portable dust collecting circular saw having a base provided so as to protrude and a saw cover substantially covering an upper surface of the base of the saw blade, a support cover attached to a wall of the saw cover; A lighting device to be held, comprising a transparent member located between the saw blade and the lighting device, and configured so that irradiation light of the lighting device illuminates the cutting edge of the saw blade through the transparent member. is there.

  Advantageous Effects of Invention According to the present invention, it is possible to provide a portable dust collecting circular saw capable of improving the visibility of a blade edge and improving workability.

  One embodiment of the portable dust collecting circular saw of the present invention will be described with reference to FIGS. FIG. 1 is a sectional perspective view of a main part showing an embodiment of the portable dust collecting circular saw of the present invention, and FIG. 2 is a sectional view taken along line AA of FIG.

  As shown in the figure, a portable dust collecting circular saw includes a power supply unit 7 attached to a main body and containing a dry battery, a deformable bent tube 8 connected to the power supply unit 7 and having an electric wire therein, An illuminating device including a socket 10 provided at the tip of the tube 8 and a bulb 11 attached to the socket 10 is provided. The light bulb 11 of the lighting device is driven by receiving the voltage of the dry battery in the power supply unit 7, and the supply of the voltage to the light bulb 11 is controlled by operating a switch 7a provided in the power supply unit 7 as shown in the figure. Is done.

  As shown in the figure, the curved tube 8 extends from the power supply unit 7 to the saw cover 5, and is attached to the saw cover 5 by a support cover 9 attached to the saw cover 5. The wall 5a of the saw cover 5 located on the main body side with respect to the saw blade 2 is provided with the above-described support cover 9 and a hole 12 in which the socket 10 and the light bulb 11 can be stored. The hole 12 is provided in the vicinity of the cutting edge 2a of the saw blade 2 intersecting with the upper surface of the base 6 and communicates with the inside of the saw cover 5. Therefore, the light bulb 11 can illuminate the cutting edge 2a of the saw blade 2 in the saw cover 5. I can do it.

  As shown in FIG. 2, a transparent cover 13 is provided inside the saw cover 5 in the hole portion 12 so that chips generated in the saw cover 5 do not enter the hole portion 12.

  Since the portable dust collecting circular saw having such a configuration illuminates the cutting edge 2a of the saw blade 2 from the main body side of the saw cover 5, the saw cover 5 which is opposite to the main body side with respect to the saw blade 2 at the time of cutting operation. When viewing the transparent portion, it is possible to prevent the base 6 from being reflected and reflected on the transparent portion of the saw cover 5, and to prevent the cutting edge 2a from being difficult to see.

  The saw cover 5 is composed of two parts, and the part in the direction in which the operator generally looks at the blade edge, that is, the part 14 on the opposite side to the main body is transparent.

  In the above embodiment, the lighting device is driven by a dry battery, but there is a method of sharing a power source for driving the motor.

The perspective view showing one embodiment of the portable dust collection circular saw of the present invention. FIG. 2 is a sectional view taken along line AA of FIG. 1. The perspective view which shows the cutting | disconnection operation of a portable dust collection circular saw. The perspective view which shows the cutting | disconnection operation of a portable dust collection circular saw.

Explanation of reference numerals

1: Material to be cut 2: Saw blade 3: Guide 4: Black line 5: Saw cover 6: Base 7: Power supply unit 8: Curved tube 9: Support cover 10: Socket 11: Light bulb 12: Hole 13: Transparent cover

Claims (3)

  A saw blade for cutting a material to be cut, a main body containing a motor for driving the saw blade, and a base mounted below the main body, the lower part of the saw blade being provided so as to protrude from the lower surface of the base. A portable dust-collecting circular saw having a base and a saw cover substantially covering an upper surface of the saw blade, a support cover attached to a wall of the saw cover, and a lighting device held by the support cover. A portable member having a transparent member positioned between the saw blade and the lighting device, wherein irradiation light from the lighting device illuminates the cutting edge of the saw blade through the transparent member. Dust circular saw.   The portable dust-collecting circular saw according to claim 1, wherein a storage portion for storing the lighting device is provided near a cutting edge of a saw blade that intersects the upper surface of the base. The portable dust collecting circular saw according to claim 1, wherein the saw cover is composed of two parts, and a part opposite to the main body is made transparent.

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