Circular saw

Patent metadata

Field	Value
Publication number	US-10328505-B2
Application number	US-201615364312-A
Country	US
Kind code	B2
Filing date	Nov 30, 2016
Priority date	Dec 1, 2015
Publication date	Jun 25, 2019
Grant date	Jun 25, 2019

Abstract

A circular saw includes a worktable, a sliding unit including a mounting base mounted on the worktable and providing an accommodation slot and two sliding shafts axially slidably inserted through the mounting base at two opposite sides of the accommodation slot in a parallel manner, and a cutting unit including a saw arm pivotally connected between the two sliding shafts and providing an accommodation portion and a saw blade pivotally mounted at the saw arm. Thus, when the saw arm is in an upper limit position, the accommodation of the saw arm is partially disposed outside the accommodation slot. When the saw arm is in a lower limit position, the accommodation portion is received in the accommodation slot. Subject to the design described above, the circular saw achieves the effects of reduced overall dimension, low vibration and high cutting accuracy.

First claim

What is claimed is:

1. A circular saw, comprising:
a worktable;
a sliding unit comprising a mounting base, two sliding shafts, and an accommodation slot located on a top side of the mounting base and facing forward of said worktable, said mounting base being mounted on said worktable and said two sliding shafts being axially and slidably inserted through said mounting base at two opposite lateral sides of said accommodation slot; and
a cutting unit comprising a saw arm pivotally connected between said two sliding shafts of said sliding unit and biasable relative to said sliding shafts between an upper limit position and a lower limit position and a saw blade pivotally mounted at said saw arm, said saw arm comprising an accommodation portion and configured in a way such that when said saw arm is disposed in said upper limit position, at least a part of said accommodation portion of said saw arm is disposed outside said accommodation slot of said mounting base of said sliding unit, and when said saw arm is disposed in said lower limit position, another part of said accommodation portion of said saw arm is received in said accommodation slot of said mounting base of said sliding unit,
wherein said sliding unit further comprises a sliding cover plate mounted on said two sliding shafts at a top side and configured to cover an entirety of top sides of the two sliding shafts, said sliding cover plate comprising a first pivot portion and a gap corresponding to the accommodation slot at a front end thereof, said saw arm is pivotally connected to said first pivot portion of said sliding cover plate with a first pivot pin,
wherein the accommodation slot is configured in a way such that the accommodation slot is between the two sliding shafts on a front end of the mounting base, and
wherein said accommodation portion comprises a first end and an opposing second end, said second end of said accommodation portion being moved out of said accommodation slot when said saw arm is moved to said upper limit position, the said second end of said accommodation portion being received in said accommodation slot when said saw arm is moved to said lower limit position and said first end is always positioned outside the accommodation slot.

2. The circular saw as claimed in claim 1 , wherein said sliding cover plate further comprises a second pivot portion extended from said first pivot portion in a direction away from said accommodation slot; said cutting unit further comprises a saw blade guard and a link, said saw blade guard being pivotally connected to said saw arm and adapted for guarding said saw blade, said saw blade guard comprising a locating member, said link comprising a first end portion connected to said locating member of said saw blade guard and an opposing second end portion connected to said second pivot portion of said sliding cover plate by a second pivot pin.

3. The circular saw as claimed in claim 2 , wherein said link further comprises an elongated sliding slot located on said first end portion and coupled to said locating member.

Assignees

• Rexon Ind Corp Ltd

Inventors

• Chen Jung-Huo

Classifications

• B23D47/02

  of frames; of guiding arrangements for work-table or saw-carrier · CPC title

• B23D47/005 Primary

  Vibration-damping · CPC title

• B23D47/00

  Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts (constructional features of these parts per se B23Q; details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00) · CPC title

• B23D45/048

  the saw blade being adjustable according to angle of cut · CPC title