Nippon Seiki Co., Ltd.

Nippon Seiki K.k.

Yuji Oguro

Norihiko Ushida

Hiroyuki Furusawa

Genichiro Sato

Kouichi Jinushi

Mitsugu Kobayashi

Katsuhiro Sasaki

Mitsuru Maruyama

Provided is a head-up display device such that shaking of a display image due to vibration can be mitigated. This head-up display device, which reflects display light output from a display unit with a reflection unit so as to produce an image to be viewed, includes a first supporting part for supporting the reflection unit rotatably about a rotation axis and a first supported part provided at one end of the reflection unit and supported by the first supporting part. The first supported part has a spherical surface formed thereon, and the first supporting part has a sliding surface that is formed therein and is in substantially point contact or line contact with the spherical surface formed on the first supported part. A first elastic member that presses the first supported part and the first supporting part against each other in the rotation axis direction is provided.

Head-up display support structure for reflection unit

The purpose of the present invention is to cut down the travel distance of a display image on receiving a stop instruction intended for a stepping motor and thereby reduce a feeling of strangeness perceived by a user. A display device allows a user to view the image displayed on a display at a prescribed display position. The display device comprises: a stepping motor having a rotor including a magnet and driven by a micro-step drive method; a reflector which moves in accordance with the rotation of the rotor in the stepping motor so as to move the display position; and a motor control device. The motor control device identifies a rotational position of the rotor between adjacent stable excitation positions, and moves the rotor to reach the closer of the stable excitation positions on the basis of the identified rotational position on receiving a stop instruction intended for the stepping motor.

Display device

A combiner storage device is equipped with: a holder for holding a combiner; a first connection section that can rotate about a first fixed shaft, said first fixed shaft being positioned at one end of the first connection section, and the other end of the first connection section being connected to the holder; and a second connection section that can rotate about a second fixed shaft, said second fixed shaft being positioned at one end of the second connection section, and the other end of the second connection section being connected to the holder. The combiner can be moved from a projected state to a stored state by means of a four-link mechanism.

Combiner storage device, head-up display device

A drive control device and a drive control method for a stepping motor are provided to reduce the number of parts and generation of vibration and noise by a stepping motor. The drive control device controls a drive frequency of the stepping motor according to a measurement value inputted. The drive control device includes storage means for storing the resonance frequency of the stepping motor based on its resonance characteristic as an output-inhibited drive frequency and control means for calculating an instruction angle for operating a needle according to the measurement value, acquiring a first drive frequency of the stepping motor, judging whether the first drive frequency is the output-inhibited drive frequency, and deciding the drive frequency by replacing the first drive frequency with the second drive frequency which is lower than the output-inhibited drive frequency if the first drive frequency is the output-inhibited drive frequency.

Drive control system of stepping motor and drive control method

A rotation detecting device A, in which a bodybeing detected, for rotation with a front wheel (wheel)is mounted on that insertion portionof a housingthrough which an axle shaft S is inserted, and rotation of the bodybeing detected is detected by a magnetism detecting element (magnetism detecting means)the bodybeing detected comprising a cylindrical portion (detecting portion), rotation of which is detected by the magnetism detecting elementand an elastic rotation transmitting portion (rotation transmitting portion)for transmitting rotation of the front wheelto the cylindrical portion

Rotation detecting device for detecting rotation of a vehicle wheel

Even when a cheap magnetic responsive element is used for a magnetic detecting portion, a rotation detector excellent in vibration resistance is provided, a housing being provided with a tubular insertion portion through which an axle is inserted. A rotor is provided with a cylindrical portion through which the insertion portion is inserted and that has a plurality of magnetic poles and rotates synchronously with a front wheel (wheel) fitted to the axle . The magnetic detecting portion (rotation detecting portion) detects a change of magnetic poles accompanying the rotation of the cylindrical portion . A spacer (magnetic member) is disposed in the surroundings of the insertion portion of a bottom portion of the housing , and holds the rotor at the bottom portion when the cylindrical portion is fitted into the insertion portion

Rotation detector having improved vibration characteristics

A rotation detector comprising a housing having an inserting portion for inserting a wheel shaft, a magnet, to be coupled to a wheel mounted to the wheel shaft, into which the inserting portion is inserted such that the magnet is rotated in synchronism with the wheel mounted to the wheel shaft, and a magnetic conversion element arranged at a portion of the housing in the proximity of the magnet.

Growing community of inventors

Niigata, Japan

Yuji Oguro