Panasonic Intellectual Property Management Co., Ltd.

Matsushita Electric Works, Ltd.

Masashi Moriguchi

Noboru Kobayashi

Hiroki Inoue

Tomoaki Murakami

Ryo Motohashi

Hidekazu Yabuuchi

Hiroaki Shimizu

Ryuji Otani

Takahiro Nishinaka

An oscillatory linear actuator includes: an output movable element which is reciprocated by a periodically varying magnetic field and performs work on an object; and a vibration absorbing movable element which is reciprocated at a phase opposite to a phase of the output movable element and reduces vibration of the oscillatory linear actuator. The vibration absorbing movable element is lighter in weight than the output movable element.

Oscillatory linear actuator and cutting device

An oscillatory linear actuator includes an electromagnet that changes a magnetic field periodically, a first movable body, a second movable body, a holder, and a coupling spring. The first movable body is disposed on one side in the first direction of the electromagnet, includes a permanent magnet, and acts on a target object. The permanent magnet reciprocates in a second direction intersecting with the first direction by the electromagnet. The second movable body is juxtaposed to the first movable body and reciprocates in the second direction. The holder holds the first and second movable bodies to provide space between the first and second movable bodies and the electromagnet and to allow the first and second movable bodies to move in the second direction. The coupling spring is disposed on one side in the first direction of the holder and couples the first movable body and the second movable body.

Oscillatory linear actuator and hair cutting device

An oscillatory linear actuator includes an electromagnetic core block including an electromagnet (electromagnetic part), and a magnetic block that holds permanent magnets so that the permanent magnets face the electromagnet with a predetermined space in between. The electromagnetic core block integrally includes a core, a coil bobbin, and a base, the core and the coil bobbin forming the electromagnet, and the base holding the core and the coil bobbin. The magnetic block includes the permanent magnets and a frame that holds the permanent magnets so as to allow the permanent magnets to oscillate freely and holds the electromagnetic core block. The frame has a guide portion that guides the electromagnetic core block to adjust a positional relation of the permanent magnets and the electromagnet, and the base is fixed to the frame inside the guide portion.

Oscillatory linear actuator, hair cutting device, and method of manufacturing oscillatory linear actuator

An oscillatory linear actuator includes: an output movable element which is reciprocated by a periodically varying magnetic field and performs work on an object; and a vibration absorbing movable element which is reciprocated at a phase opposite to a phase of the output movable element and reduces vibration of the oscillatory linear actuator. The output movable element includes: a first driver which generates a thrust force which is reciprocated by a magnetic field; a work part which performs work on the object at a predetermined distance away from the first driver; a shaft which connects the work part and the first driver; a first weight opposite to the work part relative to the first driver; and a weight support which connects the work part and the first weight.

An electric linear actuator includes a fixed block, an output movable block, a counter movable block, a projecting side coupling member, a retracting side coupling member, a block coupling member, and an output functional member. The output movable block and the counter movable block are configured to be reciprocated in the movable direction in opposite phases by electromagnetic force acting between the fixed block and the output and counter movable blocks. The projecting side coupling member is coupled to the output movable block and the counter movable block. The retracting side coupling member is coupled to the output movable block and the counter movable block. The projecting side coupling member and the retracting side coupling member have different shapes.

Electric linear actuator and output shaft vibration-type electric device with said electric linear actuator

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.

Linear oscillating actuator system

In an oscillation type linear actuator for reciprocally moving a plurality of moving members held in parallel with each other in a predetermined direction owing to electromagnetic action between a stator and them, two moving members reciprocally moving in opposite phases with each other are coupled by a coupling member having spring function, and a non-displacing portion of a plate spring portion of the coupling member which is not displaced substantially is restricted by a stopper. Even when an external force is applied to one of two moving members reciprocally moving in the opposite phases each other, motion of the other moving member is transmitted to the moving member via the coupling member, so that reduction of amplitude of the moving member to which the external force is applied can be restricted, and a balance of amplitudes of two moving members is maintained.

Vibration type linear actuator

An oscillatory linear actuator including a plurality of movable elements configured to move in a linear direction, a stationary component configured to drive the plurality of movable elements to move in the linear direction, and a plurality of connecting devices elastically connecting the plurality of movable elements with each other and positioned on at least one end portion of the plurality of movable elements in the linear direction, each of the plurality of connecting devices being extending away from the plurality of movable elements in opposite directions.

Growing community of inventors

Shiga, Japan

Masashi Moriguchi