Circular saw unit
First Claim
1. A circular saw unit including a circular saw for cutting a work piece, comprising:
- a base member;
a rotary table which is rotatably mounted on the base member and on which the work piece is placed;
a hinge supported by the base member; and
a bracket member pivotably connected to the hinge to support a circular saw;
said hinge comprising a first hinge member having a first end pivotably supported by the base member so as to be swingable in lateral directions about a horizontal axis parallel to the rotary table and a second hinge member having a first end pivotably connected to a second end of the first hinge member so as to be swingable in front and rear directions of the rotary table, a second end of the second hinge member pivotably connected to the bracket member, and a hinge locking portion comprising said second end of said first hinge member, said first end of said second hinge member, and a hinge locking means for releasably and selectively locking said second hinge member to said first hinge member so as to maintain said second hinge member in one of a plurality of predetermined rotational positions with respect to said first hinge member when the hinge locking means is locked, and to permit said second hinge member to rotate freely with respect to said first hinge member when said hinge locking means is released.
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Accused Products
Abstract
A circular saw unit capable of changing an angle for cutting a workpiece comprises a base member, a rotary table which is rotatably mounted on the base member and on which the workpiece is placed, a hinge having one end supported to the rotary table and, a bracket member or support arm member pivotally connected to the other end of the hinge. The hinge comprises a lower hinge member having one end supported to the rotary table and an upper hinge member having one end pivotally connected to the other end of the lower hinge member and having the other end connected pivotally to the bracket member. The hinge may have a quadrilateral link mechanism for restricting a lower limit position of the circular saw and for assuring a horizontal movement of the circular saw during a cutting operation.
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Citations
9 Claims
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1. A circular saw unit including a circular saw for cutting a work piece, comprising:
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a base member; a rotary table which is rotatably mounted on the base member and on which the work piece is placed; a hinge supported by the base member; and a bracket member pivotably connected to the hinge to support a circular saw;
said hinge comprising a first hinge member having a first end pivotably supported by the base member so as to be swingable in lateral directions about a horizontal axis parallel to the rotary table and a second hinge member having a first end pivotably connected to a second end of the first hinge member so as to be swingable in front and rear directions of the rotary table, a second end of the second hinge member pivotably connected to the bracket member, and a hinge locking portion comprising said second end of said first hinge member, said first end of said second hinge member, and a hinge locking means for releasably and selectively locking said second hinge member to said first hinge member so as to maintain said second hinge member in one of a plurality of predetermined rotational positions with respect to said first hinge member when the hinge locking means is locked, and to permit said second hinge member to rotate freely with respect to said first hinge member when said hinge locking means is released. - View Dependent Claims (2, 3, 4)
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5. A circular saw unit including a circular saw for cutting a work piece, comprising:
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a base member; a rotary table which is rotatably mounted on the base member and on which the work piece is placed; a hinge supported by the base member; and a bracket member pivotably connected to the hinge; said hinge comprising a first hinge member supported by the base member, a second hinge member having a first end pivotably connected to an upper end of said first hinge member so as to be swingable in front and rear directions of the rotary table and a second end pivotably connected to the bracket member, and a hinge locking portion comprising said upper end of said first hinge member, said first end of said second hinge member and a hinge locking means for releasably and selectively locking said second hinge member to said first hinge member at one of a plurality of predetermined rotational positions, such that when said hinge locking means is locked, said second hinge member is maintained in said one of the plurality of predetermined rotational positions, and when said hinge locking means is released, said second hinge member is freely pivotable with respect to said first hinge member. - View Dependent Claims (6, 7, 8, 9)
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Specification