Hand tool having a reciprocally driving mechanism
AssigneeJian-Shiou Liaw
InventorJian-Shiou Liaw
Life of this patent
Estimating the term…
Abstract
A hand tool having a reciprocally driving mechanism includes a driver, a body and a blade assembly. The driver has a driving shaft and a trigger. The driving shaft is controlled by the trigger and has a gear portion. The body has a driving gear having a teeth portion disposed on a top of the driving gear for engaging the gear portion. The driving gear has a stub eccentrically disposed on a bottom of the driving gear for driving a driving unit to move and to relatively drive a driven rod. The driven rod is connected with the blade assembly. The driving shaft is able to drive the blade assembly to reciprocally move for providing a higher torsion, a higher driving force, and a higher cutting speed, such that the hand tool is suitable for cutting a thicker workpiece.
Claims8
A hand tool comprising:
- a driver having
- a driving shaft rotatably mounted in the driver and having a gear portion protruding from the driver;
- and
- a trigger mounted on the driver and operably connected with the driving shaft for controlling the driving shaft;
- a body connected with the driver and including
- a hollow casing having a first opening and a second opening respectively defined in the casing, the first opening provided for connecting with the driver;
- a driving gear rotatably mounted in the casing, the driving gear having a teeth portion disposed on the driving gear for engaging the gear portion of the driving shaft of the driver and a stub disposed on the driving gear away from an axis of rotation of the driving gear;
- and
- a driving unit slidably mounted on the driving gear and having an oblong driving groove diametrically defined in the driving unit for slidably receiving the stub of the driving gear;
- and
- a blade assembly having two ends, a driven rod disposed on one of the ends of the blade assembly and a blade disposed on the other end of the blade assembly, the driven rod slidably mounted in the casing from the second opening of the casing and having a connecting portion disposed on the driven rod for connecting with the driving unit, the blade protruding from the second opening of the casing, wherein
- the connecting portion of the driven rod has a surface connected with the driving unit;
- multiple bolts are mounted through the connecting portion and are fixed on the driving unit;
- the casing has a third opening defined in a surface of the casing and a cap mounted in the third opening;
- and
- each bolt has a slider mounted in a head of the bolt and protruding from the bolt for slidably abutting the bottom cap.
Dependencies are inferred from the claim text.