Driving apparatus and lighting apparatus
AssigneeMINEBEA MITSUMI Inc.
InventorShinichi Fujisawa
Life of this patent
Estimating the term…
Abstract
A driving apparatus according to an embodiment includes an arm, an operation target, and a brake unit. The arm has one end supported by a support mechanism, and includes an electric driving source. The operation target is attached to the other end of the arm, the other end being an end on the opposite side of the one end, and is enabled to be pivoted by the driving source about one rotational axis intersecting with a direction from the one end to the other end. The brake unit secures immobility of a target gear that is a gear disposed in the arm, and that is a gear being rotated as the operation target is pivoted, when the power supply to the driving source stops.
Claims8
A driving apparatus comprising:
- an arm that has one end supported by a support mechanism, and that includes an electric driving source;
- an operation target that is attached to another end of the arm, the other end being an end on an opposite side of the one end, and that is enabled to be pivoted by the driving source about one rotational axis intersecting with a direction from the one end to the other end;
- and
- a brake unit that secures immobility of a target gear that is a gear disposed on the arm, and that is rotated as the operation target is pivoted, when power supply to the driving source stops, wherein
- the brake unit secures immobility of the target gear by being brought into contact with the target gear when power supply to the driving source stops, and
- the brake unit is separated from the target gear when power is supplied to the driving source.
A driving apparatus comprising:
- an arm that has one end supported by a support mechanism, and that includes an electric driving source;
- an operation target that is attached to another end of the arm, the other end being an end on an opposite side of the one end, and that is enabled to be pivoted by the driving source about one rotational axis intersecting with a direction from the one end to the other end;
- and
- a brake unit that secures immobility of a target gear that is a gear disposed on the arm, and that is rotated as the operation target is pivoted, when power supply to the driving source stops, wherein
- the driving source is a stepping motor, and
- number of teeth of the target gear is more than twice number of poles included in the stepping motor.
Dependencies are inferred from the claim text.