Driving tool
AssigneeMakita Corporation
InventorsNorikazu BABA, Shun KURIKI, Kiyonobu YOSHIKANE
Life of this patent
Estimating the term…
Abstract
A driving tool includes a piston, a driver, and a lift mechanism. The piston moves in a driving direction by a pressure of a gas. The driver extends from the piston and includes a plurality of engaged portions. The lift mechanism moves the driver in a direction opposite to the driving direction. The lift mechanism includes a rotation shaft, a wheel, a plurality of engaging portions, and a supporting member. The wheel rotates integrally with the rotation shaft. Each of the plurality of engaging portions may engage an engaged portion. The supporting member supports the wheel so the wheel is allowed to move between an initial position and an eccentric position in a radial direction of the rotation shaft.
Claims19
A driving tool, comprising:
- a piston configured to move in a driving direction by a pressure of a gas;
- a driver configured to extend from the piston in the driving direction and to comprise a plurality of engaged portions each arranged along the driving direction;
- a lift mechanism configured to move the driver in a direction opposite to the driving direction, wherein:
- the lift mechanism comprises:
- a rotation shaft;
- a wheel configured to rotate integrally with the rotation shaft;
- a plurality of engaging portions arranged in an area along an outer periphery of the wheel, the plurality of engaging portions being configured to engage the plurality of engaged portions;
- and
- a supporting member that is formed as part of the rotation shaft and is configured to support the wheel so as to allow the wheel to move between an initial position and an eccentric position in a radial direction of the rotation shaft;
- and
- when the driver moves in the direction opposite to the driving direction, the wheel is at a first state or at a second state such that:
- in the first state, the wheel engages the driver at the initial position and is movable toward the eccentric position, and
- in the second state, the wheel engages the driver at the eccentric position.
A driving tool, comprising:
- a piston configured to move in a driving direction by a pressure of a gas;
- a driver configured to extend from the piston in the driving direction and to comprise a plurality of engaged portions each arranged along the driving direction;
- a lift mechanism configured to move the driver in a direction opposite to the driving direction, wherein:
- the lift mechanism comprises:
- a rotation shaft having an axis of rotation;
- a wheel configured to rotate integrally with the rotation shaft, the wheel having an axis of rotation;
- and
- a plurality of engaging portions arranged in an area along an outer periphery of the wheel, a first engaging portion of the plurality of engaging portions being configured to engage one or more engaged portion of the plurality of engaged portions;
- and
- at a point in time when the driver is moving in the direction opposite to the driving direction, the axis of rotation of the wheel is essentially non-collinear with the axis of rotation of the rotation shaft.
A driving tool, comprising:
- a piston configured to move in a driving direction by a pressure of a gas;
- a driver configured to extend from the piston in the driving direction, the driver having a driver axis;
- a plurality of engaged portions each arranged along the driving direction;
- a lift mechanism configured to move the driver in a direction opposite to the driving direction, wherein:
- the lift mechanism comprises:
- a wheel configured to rotate, the wheel having an axis of rotation;
- and
- a plurality of engaging portions arranged in an area along an outer periphery of the wheel, a first engaging portion of the plurality of engaging portions being configured to engage one or more engaged portion of the plurality of engaged portions;
- and
- a relative position between the driver axis and the axis of rotation of the wheel is configured to change for at least a portion of the time the driver moves in the direction opposite to the driving direction.
Dependencies are inferred from the claim text.