MITER SAW

Abstract

A miter saw has a base, a turntable, a cutting unit, and a support unit. The base supports a workpiece thereon. The base has an rotation center. The turntable is supported by the base and rotatable about the rotation center. The cutting unit rotatably supports a saw blade. The support unit is provided to the turntable for pivotally movably supporting the cutting unit over the turntable. The turntable has: a main body and an extension member. The main body is provided with an outer periphery and an upper surface having an imaginary line onto which the saw blade is pivoted down. The extension member extends outwardly from the outer periphery in a first direction of the imaginary line for rotating the main body. The extension member is movable with respect to the main body.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The particular features and advantages of the invention as well as other objects will become apparent from the following description taken in connection with the accompanying drawings, in which:

FIG. 1 is a side view of a miter saw according to a first embodiment of the present invention;

FIG. 2 is a front view of the miter saw according to the first embodiment of the invention;

FIG. 3 is a plan view of the miter saw according to the first embodiment of the invention;

FIG. 4 is a side view of the miter saw according to the first embodiment of the invention;

FIG. 5 is a cross-sectional view taken along lines of V-V in FIG. 3;

FIG. 6 is a bottom view showing a turntable in the miter saw according to the first embodiment of the invention;

FIG. 7 is a cross-sectional view taken along lines of VII-VII in FIG. 6;

FIG. 8 is a side view showing an extension unit with the total horizontal length thereof being shortened;

FIG. 9 is a plan view showing the extension unit with the extension member being secured to the mount member for a cutting operation;

FIG. 10 is a cross-sectional view of the extension unit taken along lines of X-X in FIG. 9;

FIG. 11 is a side view showing an extension unit of the second embodiment according to the invention;

FIG. 12 is a side view showing the extension unit with the extension member being separated from the mount member;

FIG. 13 is a bottom view showing a turntable and the extension unit of the third embodiment according to the invention;

FIG. 14 is a cross-sectional view of the turntable and the extension unit taken along lines of XIV-XIV in FIG. 13; and

FIG. 15 is a side view showing the extension unit of the third embodiment according to the present invention.

Claims

1. A miter saw comprising: a base for supporting a workpiece thereon, the base having an rotation center;a turntable supported by the base and rotatable about the rotation center;a cutting unit rotatably supporting a saw blade; anda support unit provided to the turntable for pivotally movably supporting the cutting unit over the turntable, wherein the turntable comprises: a main body provided with an outer periphery and an upper surface having an imaginary line onto which the saw blade is pivoted down, andan extension member extending outwardly from the outer periphery in a first direction of the imaginary line for rotating the main body, the extension member being movable with respect to the main body.

2. The miter saw as claimed in claim 1, wherein the extension member comprises a proximal-end portion facing the outer periphery and a distal-end portion in the first direction,the main body comprises a mount portion for movably supporting the extension member, a distance between the proximal-end portion and the distal-end portion in the first direction depends on a posture of the extension member with respect to the main body.

3. The miter saw as claimed in claim 2, wherein the extension member is movable between a first position at which the extension member is immovably secured to the mount portion, and a second position at which a securement of the extension member to the mount portion is released.

4. The miter saw as claimed in claim 3, wherein the main body comprises a rotary shaft extending in a second direction perpendicular to the first direction and parallel to the upper surface, the extension member having an extension upper surface, the extension member is pivotably attached about the rotary shaft between the first position and the second position,the extension upper surface is flush with the upper surface when the extension member is at the first position.

5. The miter saw as claimed in claim 4, further comprising a positioning mechanism for fixing the extension member to the main member when the extension member is located at one of the first position and the second position.

6. The miter saw as claimed in claim 4, further comprising an angular adjusting mechanism associated with the extension member and the mount portion for adjusting a pivot angle of the extension member with respect to the main body.

7. The miter saw as claimed in claim 3, wherein the extension member is detachable to the mount portion,the extension member is located at the first position while the extending member is attached to the mount portion.

8. The miter saw as claimed in claim 2, the extension member is movable with respect to the mount portion in the first direction to change the distance in the first direction.

9. The miter saw as claimed in claim 1, further comprising: a fixing mechanism associated with the base and the turntable, the fixing mechanism being configured to fix the turntable to the base, the fixing mechanism comprising a plurality of engaged portions provided along an arc about the rotation center, and an engaging portion engageable with one of the plurality of engaged portions.

10. The miter saw as claimed in claim 1, wherein the support unit comprises a moving mechanism for moving the cutting unit in the first direction.

11. The miter saw as claimed in claim 10, wherein the support unit is positioned on an opposite side of the extension member with respect to the rotation center.