Guide ruler for portable machining apparatus
A positioner positions a guide ruler relative to a workpiece that is adjacent to the guide ruler while more stably retaining the guide ruler at the locked position without causing interference with a cutting operation. A positioner that positions a ruler body relative to a workpiece includes a contact member to be in contact with an edge of the workpiece and extendable along the edge of the workpiece, a support supporting the contact member in a manner rotatable on a lower surface of the ruler body, and a position retainer that retains the contact member at a rotational position.
1. A guide ruler for guiding a portable machining apparatus in a machining direction relative to a workpiece, the guide ruler comprising:
a ruler body; and
a positioner configured to position the ruler body relative to the workpiece, the positioner including
a contact member to be in contact with an edge of the workpiece, the contact member being extendable along the edge of the workpiece,
a support supporting the contact member in a manner rotatable on a lower surface of the ruler body, and
a position retainer configured to retain the contact member at a rotational position.
2. The guide ruler according to claim 1 , wherein
the contact member is extendable longer along the edge of the workpiece at a greater angle with a direction orthogonal to a longitudinal direction of the ruler body.
3. The guide ruler according to claim 1 , wherein
the contact member includes
an elongated first member, and
an elongated second member connected to the first member in a manner displaceable in a longitudinal direction of the first member.
4. The guide ruler according to claim 3 , wherein
the first member includes a pair of guide walls configured to guide the second member in the longitudinal direction.
5. The guide ruler according to claim 3 , wherein
the second member has an elongated slot, and
the guide ruler further comprises a guide protrusion placed through the elongated slot and attached to the first member.
6. The guide ruler according to claim 5 , wherein
the guide protrusion is located between the pair of guide walls in a longitudinal direction of the contact member.
7. The guide ruler according to claim 5 , wherein
the second member has a wider portion on an end of the elongated slot to allow removal of the guide protrusion.
8. The guide ruler according to claim 5 , wherein
the contact member includes a contact part to be in contact with the edge of the workpiece at a position opposite to the support from the guide protrusion.
9. The guide ruler according to claim 1 , wherein
the ruler body has a groove supporting a first end of the contact member in a movable manner.
10. The guide ruler according to claim 9 , wherein
the position retainer is located at the groove.
11. The guide ruler according to claim 10 , wherein
the groove is located on an upper surface of the ruler body, and
the position retainer includes a locking member protruding upward from the groove, the locking member being configured to lock the first end of the contact member.
12. The guide ruler according to claim 11 , wherein
the groove includes a positioning unit configured to restrict movement of the locking member along the groove,
the locking member is displaceable in a depth direction of the groove to engage with the positioning unit at a shallower position, and
the locking member is urged toward the shallower position.
13. The guide ruler according to claim 1 , wherein
the support is cylindrical and to be in contact with the edge of the workpiece.
14. The guide ruler according to claim 1 , further comprising:
an auxiliary attachment attachable to the contact member and to be in contact with the edge of the workpiece.
15. The guide ruler according to claim 4 , further comprising:
an auxiliary attachment attachable to the guide walls and to be in contact with the edge of the workpiece.
16. The guide ruler according to claim 2 , wherein
the contact member includes
an elongated first member, and
an elongated second member connected to the first member in a manner displaceable in a longitudinal direction of the first member.
17. The guide ruler according to claim 4 , wherein
the second member has an elongated slot, and
the guide ruler further comprises a guide protrusion placed through the elongated slot and attached to the first member.
18. The guide ruler according to claim 6 , wherein
the second member has a wider portion on an end of the elongated slot to allow removal of the guide protrusion.
19. The guide ruler according to claim 6 , wherein
the contact member includes a contact part to be in contact with the edge of the workpiece at a position opposite to the support from the guide protrusion.
20. The guide ruler according to claim 7 , wherein
the contact member includes a contact part to be in contact with the edge of the workpiece at a position opposite to the support from the guide protrusion.