Driver drill
AssigneeMakita Corporation
InventorHidenori NAGASAKA
Life of this patent
Estimating the term…
Abstract
A driver-drill (1) includes a motor (16), a spindle (32), which is rotationally driven using rotational energy output by the motor (16), and a chuck (30), which rotates integrally with the spindle (32). The chuck (30) includes: a chuck body (31); a chuck sleeve (80), which is externally mounted on the chuck body (31); and two or more chuck jaws (67), which are provided in the chuck body (31) and which expand and contract relative to the rotational axis of the spindle (32) in response to manual rotation of the chuck sleeve (80). The spindle (32) may be integrally formed (in one piece) with the chuck body (31). In addition or in the alternative, the chuck body (31) may be rotatably supported by a bearing (42) disposed in a tube-shaped housing (6).
Claims20
A driver-drill comprising:
- a motor;
- a spindle configured to be rotationally driven using rotational energy output by the motor;
- and
- a chuck, which rotates integrally with the spindle;
- wherein:
- the chuck comprises:
- a chuck body;
- a chuck sleeve, which is externally mounted on the chuck body;
- and two or more chuck jaws, which are provided in the chuck body and are configured to radially spread apart and converge together relative to a rotational axis of the spindle in response to manual rotation of the chuck sleeve;
- and
- the spindle is formed integrally with the chuck body such that there is no seam between the spindle and the chuck body.
A driver-drill comprising:
- a motor;
- a spindle configured to be rotationally driven using rotational energy output by the motor;
- and
- a chuck, which rotates integrally with the spindle;
- wherein:
- the chuck comprises:
- a chuck body;
- a chuck sleeve, which is externally mounted on the chuck body;
- and two or more chuck jaws, which are provided in the chuck body and are configured to expand and contract relative to an axial direction of the spindle in response to manual rotation of the chuck sleeve;
- a bearing is disposed within a tube-shaped housing and rotatably supports the chuck body;
- and
- an inner diameter of the bearing is larger than a circumscribed circle defined by rearward ends of the chuck jaws.
Dependencies are inferred from the claim text.