Mitsumi Electric Company Ltd.

Kensuke Yamada

Kenichi Furukawa

Yuki Takahashi

Shigenori Inamoto

Yasutaka Kitamura

Takayuki Numakunai

Masaharu Kagami

Kenichi Hori

Riichiro Hibiya

Yoshihiro Sakanushi

Shintaro Tomitsuka

Yuuki Takahashi

Masami Ito

Takeo Miyajima

Tanemichi Fukui

An actuator includes a first driving beam that is connected to an object to be driven and includes multiple first beams extending in a direction orthogonal to a first predetermined axis, ends of each adjacent pair of the first beams being connected to each other via one of first turnaround parts such that the first driving beam forms a zig-zag bellows structure as a whole; first driving sources formed on first surfaces of the first beams; and ribs formed on second surfaces of the first beams at positions that are closer to the first predetermined axis than the first turnaround parts. The first driving sources are configured to move the first driving beam and thereby rotate the object around the first predetermined axis.

Actuator, optical scanning device, and manufacturing methods

An actuator including a beam configured to support an object to be driven, and a drive source to which a drive signal is input, wherein the drive signal includes a drive waveform in a shape of sawtooth waveform, a rising of the drive waveform in the shape of sawtooth waveform includes a first staircase waveform and a second staircase waveform continuing from the first staircase waveform, the first staircase waveform generates oscillation of a ringing suppressing waveform for suppressing a ringing waveform to be generated in the second staircase waveform, and the object to be driven is driven to swing in a direction of rotating around the predetermined axis by driving the drive source.

Actuator and light scanning apparatus

An actuator includes a driving beam that includes a beam extending in a direction orthogonal to a predetermined axis and supports an object to be driven; a driving source that is formed on a surface of the beam and causes the object to rotate around the predetermined axis; a sensor beam that extends in a direction that is the same as the direction in which the beam extends, one end of the sensor beam being connected to a lateral side of the beam; and a sensor that is formed on a surface of the sensor beam, the surface of the sensor beam and the surface of the beam facing the same direction.

Actuator and optical scanning device

An actuator includes a driving beam that includes a beam extending in a direction orthogonal to a predetermined axis and supports an object to be driven, a driving source that is formed on a first surface of the beam and causes the object to rotate around the predetermined axis, and a rib formed on a second surface of the beam. A notch is formed in a portion of the driving source corresponding to an end of the rib.

An optical scanning device includes a mirror support including a first surface and a second surface, a mirror for reflecting a laser beam being formed on the first surface; a driving beam that includes a beam extending in a direction orthogonal to a predetermined axis and is connected to the mirror support; a driving source that is formed on a surface of the beam and causes the mirror support to rotate around the predetermined axis; and a rib formed on the second surface of the mirror support at a position corresponding to the mirror. The first surface of the mirror support includes an area where the mirror is formed and an exposed area where the first surface is exposed.

Optical scanning device

An actuator includes a beam that supports an object to be driven, and a driving source that receives a driving signal and causes the object to rotate around a predetermined axis. The driving signal includes a sawtooth driving waveform, and a differential waveform of a falling section of the sawtooth driving waveform is formed of half sign waves having a wavelength that is a non-integral multiple of a ringing wavelength.

A power generatorincludes a power generating unitand a supporting memberfor supporting the power generating unit. The power generating unitconstitutes a two-degree-freedom vibration system including a first vibration system having a coil assemblyand a first spring portionfor coupling the coil assemblywith a housingand a second vibration system having a magnet assemblyand a second spring portionfor coupling the magnet assemblywith the coil assembly. The power generating unitis configured so that each of a first natural frequency &#x3c9;of the first vibration system and a second natural frequency &#x3c9;of the second vibration system is in the range of 14 to 42 Hz.

Power generator, power generator set and power generation system

A power generatorincludes a housingand a power generating unitdisposed in the housing. The power generating unitis constituted of a magnet assemblyhaving a permanent magnet, a coildisposed so as to surround the permanent magnet, a coil holding portionholding the coiland a pair of an upper leaf springU and a lower leaf springL disposed in the housingso as to be opposed to each other through at least one of the magnet assembly, the coiland the coil holding portion

Power generator having coil and magnet disposed between pair of leaf springs

A power generatorof the present invention is configured to be used in a state that the power generatoris fixedly attached to a vibrating body formed of a magnetic material. The power generatorincludes a main unithaving a power generating unitconfigured to generate electric power by utilizing vibration and a basehaving one surface on which the power generating unitis supported and another surfaceopposed to the one surface; and at least one permanent magnetdisposed on the side of the other surfaceof the basein a state that the permanent magnetcan be displaced or deformed in a thickness direction of the base. When the main unitis fixedly attached to the vibrating body through an attachmentincluding the permanent magnet, the main unitis configured to generate the electric power by utilizing vibration of the vibrating body.

Power generator and power generating system

An operation input apparatus configured to receive a force from an operator, including: a boardincluding a placement surface on which coilsare placed, the coils being arranged in a circumferential direction of a circle formed by connecting points apart from a reference point by the same distance; a keythat is provided in a side where the force is input with respect to the board; and a return springelastically supporting the key, wherein the keyincludes an opposed surface opposed to the placement surface and an operation surface configured to receive an application of the force, and causes an inductance of at least one of the coilsto change with an approach of the opposed surface to the placement surface due to the application of the force on the operation surface.

Operation input apparatus and operation input detection apparatus

An operation input device includes a coil, an operation part configured to be displaced in an axial direction of the coil by the action of an operation input, a core whose positional relationship with the coil is changed by the displacement of the operation part, a yoke placed outside the coil, and a magnet configured to generate a magnetic flux that flows through the core and the yoke. The coil is configured to output a signal corresponding to the amount of the displacement of the operation part. The operation part is caused to move by an electric current flowing through the coil and the magnetic flux of the magnet.

Operation input device and operation input detecting device

An input device includes a first yoke; a substrate disposed on the first yoke; a coil disposed on the substrate; and a second yoke disposed above the coil and configured to be displaced downward by a force applied and thereby to change inductance of the coil. The input device is configured to output a signal corresponding to the amount of displacement of the second yoke. The substrate has an opening that communicates with a hollow of the coil, and the first yoke includes a step that is inserted into the opening of the substrate.

Input device

An operation input apparatus includes an operating unit that is displaced by the action of an operation input; an actuator output shaft that is displaced in the same direction as the operating unit by the action of the operation input; an actuator that moves the operating unit via the actuator output shaft; and a detecting element that outputs a signal corresponding to an amount of displacement of the operating unit.

Operation input apparatus and operating apparatus

Disclosed is an actuator that generates the reciprocating rotational motion of an electric toothbrush or similar without employing a drive transmission mechanism as a separate entity from a drive source. An actuator () includes a fixed body () comprising an outer yoke () having inner wall planes that respectively oppose the magnetic pole planes of unlike poles of a magnet () with a predetermined gap therebetween. A coil () is arranged to encircle the magnet () between the magnetic pole planes of the unlike poles of the magnet () and the inner wall planes of the outer yoke () that respectively oppose the magnetic pole planes of the unlike poles, and this coil () is movably supported as a movable body () by way of an elastic member () fastened to the fixed body (). The reciprocating rotational motion of the movable body () is afforded by the supply of an alternating current of a frequency approximately equivalent to the resonant frequency of the movable body () from an alternating current supply () to the coil ().

Actuator and electric toothbrush using actuator

An actuator allows miniaturization by realizing back-and-forth rotating motion of, for example, an electric brush without a drive transmitting mechanism which constitutes a separate entity from a drive source. In a movable body () of this actuator (), an outer yoke () is provided with inner wall planes (and) located opposing each other spaced a predetermined interval apart and magnets (and) of different magnetic poles opposing each other in the inner walls planes (and). The movable body () has a center yoke () located between the magnets (and) through air gaps. The movable body () is provided with a shaft (). The fixed body () has a coil () which is located in the air gaps and which circles the center yoke (). The fixed body () movably supports the movable body () through elastic bodies (). An alternating current supplying section () supplies to the coil () the alternating current of a frequency virtually equal to the resonance frequency of the movable body ().

Growing community of inventors

Tokyo, Japan

Kensuke Yamada