Power tool
AssigneeHitachi Koki Co., Ltd.
InventorsAtsuyuki Kikuchi, Tsukasa Suzuura
Life of this patent
Estimating the term…
Abstract
An elastic unit includes a transatory unit including a first elastic support member, a second elastic support member and not-shown four round bar-shaped elastic bodies made of rubber. A rotation urging unit is composed of a Neidhart spring including an outer frame, a shaft, a rotary member, and four rubber rods. The rotary member is in a state where it is rotated at 10° counterclockwise from an initial state. Therefore, the rubber rod deforms upon reception of rolling friction from the outer frame and the rotary member, and the rotation urging unit gives the handle portion the urging power by which the handle portion is rotated so that one end of the handle portion is spaced away from a gear housing 31 in the direction of the handle portion.
Claims7
A power tool comprising:
- a housing;
- a motor accommodated in the housing;
- a reciprocation converting part converting a rotation of the motor into reciprocating motion;
- a tip tool attached to a leading end side of the housing, the tip tool being driven by the reciprocating motion of the reciprocation converting part;
- a handle portion having one end connected to a back portion of the housing that accommodates the reciprocation converting part and the other end connected to another back portion of the housing which is different from the back portion of the housing which accommodates the reciprocation converting part;
- an elastic means provided between the back portion of the housing and the one end of the handle portion;
- and
- rotation urging means provided between the another back portion of the housing and the other end of the handle portion, thereby being positioned away from the back portion of the housing which accommodates the reciprocation converting part,
- wherein the rotation urging means includes:
- an outer frame which defines inner space;
- a shaft passing through the inner space and around which the handle portion is rotated;
- a rotary member fixed, in the inner space, to the shaft and rotatable together with the shaft;
- and
- plural elastic bodies provided in the inner space between the outer frame and the rotary member;
- wherein the rotation urging means gives the one end of the handle portion urging power by which the handle portion is rotated around the other end of the handle portion so that the one end of the handle portion is spaced away from the back portion of the housing in a direction of the handle portion.
Dependencies are inferred from the claim text.