OSCILLATING ACTUATOR
First Claim
1. An oscillating actuator having a coil arranged within a tubular housing and a magnet arranged within the housing while being surrounded by the coil, the coil and the magnet cooperating with each other so that the magnet oscillates linearly along an axis of oscillation of the housing, the oscillating actuator comprising:
- a shaft, arranged along the axis of oscillation of the housing, having both ends fixed to end walls provided at both ends of the housing in the oscillation axis direction of the housing;
a movable element having the magnet adapted to pass the shaft therethrough and movable in an extending direction of the shaft and a weight arranged within the housing adjacent to the magnet in the extending direction of the shaft, adapted to pass the shaft therethrough, and movable integrally with the magnet; and
an elastic member, arranged between the movable element and the end wall, for urging the movable element in the oscillation axis direction;
wherein the coil comprises first and second coils wound annularly about the axis of oscillation and disposed in parallel with each other in the oscillation axis direction, the first and second coils having respective current flowing directions different from each other.
1 Assignment
0 Petitions
Accused Products
Abstract
An oscillating actuator comprising a shaft, arranged along an axis of oscillation of a housing, having both ends fixed to end walls provided at both ends of the housing; a movable element having a magnet adapted to pass the shaft therethrough and movable in an extending direction of the shaft and a weight arranged adjacent to the magnet in the extending direction of the shaft, adapted to pass the shaft therethrough, and movable integrally with the magnet; and an elastic member, arranged between the movable element and the end wall, for urging the movable element in the oscillation axis direction; wherein the coil comprises first and second coils wound annularly about the axis of oscillation and disposed in parallel with each other in the oscillation axis direction, the first and second coils having respective current flowing directions different from each other.
49 Citations
9 Claims
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1. An oscillating actuator having a coil arranged within a tubular housing and a magnet arranged within the housing while being surrounded by the coil, the coil and the magnet cooperating with each other so that the magnet oscillates linearly along an axis of oscillation of the housing, the oscillating actuator comprising:
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a shaft, arranged along the axis of oscillation of the housing, having both ends fixed to end walls provided at both ends of the housing in the oscillation axis direction of the housing; a movable element having the magnet adapted to pass the shaft therethrough and movable in an extending direction of the shaft and a weight arranged within the housing adjacent to the magnet in the extending direction of the shaft, adapted to pass the shaft therethrough, and movable integrally with the magnet; and an elastic member, arranged between the movable element and the end wall, for urging the movable element in the oscillation axis direction; wherein the coil comprises first and second coils wound annularly about the axis of oscillation and disposed in parallel with each other in the oscillation axis direction, the first and second coils having respective current flowing directions different from each other. - View Dependent Claims (2, 8)
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3. An oscillating actuator having a coil arranged within a tubular housing and a magnet arranged within the housing while being surrounded by the coil, the coil and the magnet cooperating with each other so that the magnet oscillates linearly along an axis of oscillation of the housing, the oscillating actuator comprising:
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a shaft, arranged along the axis of oscillation of the housing, having both ends fixed to end walls provided at both ends of the housing in the oscillation axis direction of the housing; a movable element having the magnet adapted to pass the shaft therethrough and movable in an extending direction of the shaft and a weight arranged within the housing, adapted to pass the shaft therethrough, and movable integrally with the magnet; and an elastic member, arranged between the movable element and the end wall, for urging the movable element in the oscillation axis direction; wherein the weight has a bearing part slidable along the shaft; and wherein the movable element is provided with a movement regulator for restraining the magnet from moving radially of the shaft with respect to the weight. - View Dependent Claims (4, 5, 6, 7, 9)
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Specification