摘要:
A linear oscillating actuator system which is capable of canceling out the stator vibrations for driving a load with a minimum of vibrations. The system includes an oscillator carrying a permanent magnet as well as an output shaft for connection to the load. A stator assembly is incorporated within a housing and is configured to movably support the oscillator and to carry an electromagnet. The electromagnet generates a magnetic field which interacts with the permanent magnet to reciprocate the oscillator relative to the stator assembly in a linear path. A balancer is added to the system for canceling out undesired stator vibrations. The balancer are commonly supported to the stator assembly to be driven thereby in parallel with the oscillator. The balancer is configured to have a mass generally equal to that of the oscillator and to be devoid of any output member. Thus, the oscillator and the balancer are driven in a counter reciprocating manner, thereby keeping the stator assembly free from counter-vibrations and therefore driving the output shaft with a maximum output power.
摘要:
An electric toothbrush includes a drive part, a driver, a brush part and a vibration-absorber. The drive part includes a drive shaft provided to be lineally movable and a brush part detachably attached to one end of the drive shaft. The driver is configured to apply reciprocal force to the drive shaft to reciprocally lineally move the drive shaft. The vibration-absorber is connected to the drive shaft via a second spring to be lineally movable along the drive shaft. A weight ratio of a weight of the vibration-absorber to a weight of the drive part is at least 0.9 and at most 1.1.
摘要:
A reciprocatory dry shaver capable of driving an inner cutter (62) smoothly along an arcuately curved outer cutter (61) for efficient shaving. The dry shaver includes a shaving head (40) carrying an outer cutter which is arcuately curved along its length, and an inner cutter driven to reciprocate along the length of the outer cutter. An actuator (100) is mounted in the shaving head for driving the inner cutter. The actuator includes an oscillator (130) which reciprocates in the lengthwise direction of the outer cutter and carries a joint (102) for driving connection to the inner cutter. Also included in the actuator is a resilient coupling link (140) which supports the oscillator to the shaving head in order to allow the oscillator to reciprocate relative to the shaving head. The resilient coupling link has its one end coupled to the oscillator and the other end anchored to the shaving head at a portion away from the inner cutter than the oscillator. Thus, the oscillator is supported as being floated or lifted with respect to the shaving head, thereby being allowed to travel along a path which is somewhat arcuate in coincidence with the arc of the outer cutter. Accordingly, the oscillator, i.e., the inner cutter carried thereon can be guided smoothly along the arc of the outer cutter, assuring smooth and efficient shaving.
摘要:
The linear actuator for both vibrating and rolling movement according to one preferred embodiment of the present invention is comprised of a shaft (2) supported so as to be movable reciprocally in an axis direction and a rotation direction about the axis, a first linear driver (3A) including a cylindrical stator (41) having a winding wire (16) thereon and a movable member (40) arranged inside the stator (41) so as to reciprocate the shaft (2) linearly in the axis direction, a second linear driver (3B) including a cylindrical stator (31) having a winding wire (11) thereon and a movable member (30) arranged inside the stator so as to reciprocate the shaft (2) rollingly in the rotation direction, one of the movable members (30, 40) being secured on the shaft (2) and another one of the movable members (30, 40) being movable relative to the shaft (2), and a coordinating member (25) for enabling the shaft (2) and the one of the movable member (30, 40) to move in opposite phase to the another one of the movable member (30, 40).
摘要:
An improved linear oscillating actuator is capable of minimizing the undesired vibrations while moving first and second oscillators in parallel paths. The first and second oscillators carry first and second drive elements respectively for driving connection to individual reciprocating loads. The first and second drive elements project upwardly respectively from the first and second oscillators such that the first drive element is disposed immediately upwardly of the second oscillator and the second drive elements is disposed immediately upwardly of the first oscillator. With this reverse arrangement of the first and second drive elements relative to the first and second oscillators, the individual oscillating systems each including the oscillator, the drive element and the corresponding reciprocating load can have its mass center disposed in close proximity to a mass center of the actuator, thereby enabling to reduce undesired vibrations which would otherwise occur around the mass center of the actuator.
摘要:
A linear oscillating actuator system which is capable of canceling out the stator vibrations for driving a load with a minimum of vibrations. The system includes an oscillator carrying a permanent magnet as well as an output shaft for connection to the load. A stator assembly is incorporated within a housing and is configured to movably support the oscillator and to carry an electromagnet. The electromagnet generates a magnetic field which interacts with the permanent magnet to reciprocate the oscillator relative to the stator assembly in a linear path. A balancer is added to the system for canceling out undesired stator vibrations. The balancer are commonly supported to the stator assembly to be driven thereby in parallel with the oscillator. The balancer is configured to have a mass generally equal to that of the oscillator and to be devoid of any output member. Thus, the oscillator and the balancer are driven in a counter reciprocating manner, thereby keeping the stator assembly free from counter-vibrations and therefore driving the output shaft with a maximum output power.