HAMMER DRILL - MATSUSHITA ELECTRIC WORKS,LTD.

Title:

HAMMER DRILL

Document Type and Number:

Japanese Patent JP3843914

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To regulate a percussive force by matching a drill bit to be used.
SOLUTION: A hammer drill includes an intermediate shaft 60 rotationally driven by a motor 2, a spindle 7 which transmits the rotation through the shaft 60, and a percussive impact means for applying a percussive impact in an axial direction to the drill bit held by the spindle 7 by reciprocating the spindle 7 in the axial direction by receiving the rotation of the shaft through a motion conversion member 6. The drill also has a percussive force changing means for changing the percussive force by the percussive impact means by changing the speed reduction ratio from the motor 2 to the shaft 60. The percussion force is changed by changing the speed reduction ratio to a motion conversion member 6.

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Inventors:

Kouichi Hashimoto
Shinya Shiratani
Mineaki Yokoyama
Kiichi Okada

Application Number:

JP2002247831A

Publication Date:

November 08, 2006

Filing Date:

August 27, 2002

Export Citation:

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