Guide ruler for portable machining apparatus

Patent metadata

Field	Value
Publication number	US-11766803-B2
Application number	US-202016924918-A
Country	US
Kind code	B2
Filing date	Jul 9, 2020
Priority date	Aug 28, 2019
Publication date	Sep 26, 2023
Grant date	Sep 26, 2023

Abstract

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.

First claim

What is claimed is:

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.

Assignees

• Makita Corp

Inventors

• Kani Toshiyuki
• Goto Hiromu

Classifications

• B27B9/04 Primary

  Guiding equipment, e.g. for cutting panels {(circular sawing machines for dividing plates in parts of determined size, e.g. panels B27B5/06)} · CPC title

• B23D59/002

  for the position of the saw blade (mounting for swiveling or tilting a circular saw blade B27B5/36; portable power-driven circular saws with adjustment for cutting depth or amount of tilting B27B9/02) · CPC title

• B23D45/16

  Hand-held sawing devices with circular saw blades · CPC title

• B27C5/10

  Portable hand-operated wood-milling machines; Routers · CPC title

• B23Q15/22 Primary

  Control or regulation of position of tool or workpiece · CPC title