Length adjustable work table

Patent metadata

Field	Value
Publication number	US-9302371-B2
Application number	US-201314136413-A
Country	US
Kind code	B2
Filing date	Dec 20, 2013
Priority date	Dec 25, 2012
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

A length adjustable worktable includes a main table, a side extension, a guide unit, and an actuating device. The guide unit is engaged with the side extension for guiding the side extension to slide toward or away from the main table. The actuating device includes an operating member, a driving unit, and a positioning member. By manipulating the operating member, the driving unit and the positioning member are driven, such that the side extension is able to slide toward or away from the main table along the guiding unit, thereby allowing the length of the worktable to be adjusted.

First claim

What is claimed is:

1. A length adjustable worktable, comprising:
a main table;
a side extension movable relative to said main table;
a guide unit connected to said side extension for enabling said side extension to slide relative to said main table; and
an actuating device comprising an operating member mounted at said side extension, a driving unit mounted at said main table and drivable by said operating member, and a positioning member connected to said driving unit corresponding to said guide unit,
wherein said driving unit comprises a first swing arm pivotally connected to said main table, a second swing arm pivotally connected to said main table and laterally located relative to said first swing arm, a first axle shaft connected to said first swing arm, and a second axle shaft connected to said second swing arm,
wherein said driving unit and said positioning member being movable by said operating member for locking or unlocking said side extension relative to said main table.

2. The length adjustable worktable as claimed in claim 1 , wherein said main table comprises a first sidewall and a second sidewall opposite to said first sidewall; said guide unit comprises a first guide rail fixedly mounted at said first sidewall, a second guide rail fixedly mounted at said second sidewall, a first sliding bar slidably coupled to said first guide rail and connected to said side extension, and a second sliding bar slidably coupled to said second guide rail and connected to said side extension; and wherein said positioning member is configured to lock at least one of said first and second sliding bars of said guide unit in position.

3. The length adjustable worktable as claimed in claim 2 , wherein said first guide rail, said second guide rail, said first sliding bar and said second sliding bar of said guide unit are aluminum extruded components.

4. A length adjustable worktable, comprising:
a main table;
a side extension movable relative to said main table;
a guide unit connected to said side extension for enabling said side extension to slide relative to said main table; and
an actuating device comprising an operating member mounted at said side extension, a driving unit mounted at said main table and drivable by said operating member, and a positioning member connected to said driving unit corresponding to said guide unit, said driving unit and said positioning member being movable by said operating member for locking or unlocking said side extension relative to said main table,
wherein said driving unit comprises a flexible brake member connected to said operating member, and an elastic member configured to exert a restoring force to said brake member, wherein the restoring force of said elastic member is capable to constantly maintain said positioning member and said guide unit in position to lock said side extension to said main table.

5. The length adjustable worktable as claimed in claim 4 , wherein said main table comprises a first sidewall and a second sidewall opposite to said first sidewall; and said guide unit comprises a first guide rail fixedly mounted at said first sidewall, a second guide rail fixedly mounted at said second sidewall, a first sliding bar slidably coupled to said first guide rail and connected to said side extension, and a second sliding bar slidably coupled to said second guide rail and connected to said side extension.

6. The length adjustable worktable as claimed in claim 5 , wherein said first guide rail of said guide unit comprises a first notch, said second guide rail of said guide unit comprises a second notch corresponding to said first notch, said first sliding bar comprises a first coupling groove defined therein for engaging said first guide rail, and said second sliding bar comprises a second coupling groove defined therein for engaging said second guide rail.

7. The length adjustable worktable as claimed in claim 6 , wherein said driving unit of said actuating device further comprises a first swing arm pivotally connected to said main table, a second swing arm pivotally connected to said main table and laterally located relative to said first swing arm, a first axle shaft connected to said first swing arm, and a second axle shaft connected to said second swing arm.

8. The length adjustable worktable as claimed in claim 7 , wherein said first and second swing arms each comprise a respective pivot connection portion pivotally connected to said main table; wherein each pivot connection portion has a driven end located at one side of said pivot connection portion and movable by said brake member, and a linking-up end located at an opposite side of said pivot connection portion for respectively driving said first axle shaft and said second axle shaft.

9. The length adjustable worktable as claimed in claim 8 , wherein said elastic member is elastically and compressibly located between the driven ends of said first swing arm and said second swing arm.

10. The length adjustable worktable as claimed in claim 8 , wherein said brake member of said driving unit comprises a locating block affixed to said side extension, a guide tube connected between said locating block and the driven end of said second swing arm, and a steel rope inserted through said guide tube and connected between said operating member and the driven end of said first swing arm.

11. The length adjustable worktable as claimed in claim 8 , wherein said elastic member of said driving unit is a compression spring disposed between the driven end of said first swing arm and the driven end of said second swing arm.

12. The length adjustable worktable as claimed in claim 7 , wherein said positioning member comprises a first positioning block connected to said first axle shaft and accommodated in said first notch, and a second positioning block connected to said second axle shaft and accommodated in said second notch, wherein said first positioning block and said second positioning block are respectively displaceable in said first coupling groove and said second coupling groove along an axial direction of said first axle shaft and said second axle shaft.

13. The length adjustable worktable as claimed in claim 12 , wherein said first sliding bar of said guide unit comprises a first coupling groove defined therein for engaging said first guide rail, and a first positioning wall disposed adjacent to said first coupling groove corresponding to said first positioning block; wherein second sliding bar comprises a second coupling groove defined therein for engaging said second guide rail, and a second positioning wall disposed adjacent to said second coupling groove corresponding to said second positioning block; and wherein said first positioning block and said second positioning block are respectively movable to abut against or release from said first sliding bar and said second sliding bar.

14. The length adjustable worktable as claimed in claim 7 , wherein said first swing arm and said second swing arm each comprise a pivot connection portion respectively pivotally connected to said main table; wherein each pivot connection has a driven end located at one side of said pivot connection portion and movable by said brake member, and a linking-up end located at an opposite side of said pivot connection portion for respectively driving said first axle shaft and said second axle shaft; and wherein said positioning member comprises a first positioning block connected to said first axle shaft and accommodated in said first notch, and a second positioning block connected to said second axle shaft and accommodated in said second notch, said first positioning block and

Assignees

• Rexon Ind Corp Ltd

Inventors

• Chen Jung-Huo

Classifications

• B25B11/00 Primary

  Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders (for holding or positioning work for welding, soldering, or cutting by applying heat locally B23K37/04; specially adapted to machine tools B23Q3/00) · CPC title

• B23Q1/74 Primary

  Auxiliary tables · CPC title