Yamaha Corporation

Tsutomu Watanabe

Hisashi Nagai

Yuji Sakurai

Kenji Ishibashi

Shinya Sonoda

Eizo Amiya

Takashi Fujita

Akihiro Sonogi

Akinori Sonogi

Yuuji Sakurai

A cover body () includes side surface portions () that surround a housing () of a speaker () in an installed state, and a ceiling surface portion () that covers the side surface portions (). An open portion () that can expose an operation portion () of the speaker () is formed in one of the side surface portions (), and an overhang portion () that protrudes from the surface of the side surface portion () is provided above the open portion ().

Speaker cover

A distal end of an inserted pole makes contact with a bottom surface or tapering surface of a portion corresponding to a bottom of an insertion hole. A lever rotates about a pivot shaft, and a pressing surface facing from a recessed portion formed in the insertion hole presses a side surface portion of the pole. The pole pressed by the pressing surface is mainly received by ridge portions, particularly the ridge portions positioned on the opposite side with a central axis therebetween in relation to the pressing surface. The ridge portions are positioned on both sides of the pole with the cross section along the line A-A therebetween as viewed in the axial direction. As the lever is rotatably operated in the tightening direction, the pressing position gradually approaches the central axis, thereby increasing the pressing force.

Acoustic equipment

A housing structure of an acoustic controller, in which a lower case of the controller has an increased rigidity and improved moldability. The lower case is integrally formed by a resin and has a bottom surface thereof disposed to face a tabletop surface when the controller is in a stationarily placed thereon. The bottom surface of the lower case is formed to have a concave-forming portion that defines a concave space communicating with the outside of the controller on the left and right sides thereof and which is upward convex as viewed when the controller is stationarily placed, thus increasing the rigidity of the lower case. Bosses and vertical ribs formed to project upward from a horizontal part of the concave-forming portion of the lower case each have a reduced height, thereby improving the moldability of the lower case.

Housing structure of acoustic controller

A housing structure of an acoustic controller having a lower case which is lightweight, high in the degree of freedom in shape design, and capable of suppressing a deformation of side walls thereof after being molded. The lower case is integrally formed from resin into a rectangular dish shape having front, rear, left, right, and bottom plates. An upper unit is attached to an open upper part of the lower case. The left and right plates of the lower case have upper parts thereof formed into brim portions protruding outward in the left-to-right direction. Front and rear parts of each brim portion are further protruded outward and formed into flanges that function as mounting portions used for mounting the acoustic controller to a rack.

A mountain-shaped angle memberis fixed to a side facehaving a stepped portion of a mixer being an electronic device. The stepped portion is composed of a first wall portion projecting outward from the side face, a second wall portion recessed inward from the first wall portion, and a connecting portion connecting the first wall portion and second wall portion. Then, a fixing member is made capable of fixing the mountain-shaped angle member in either a first attachment mode in which the angle member is in contact with the first wall portion and opposed to the connecting portion or a second attachment mode in which the angle member is in contact with the first wall portion and overhangs outward the first wall portion.

Electronic device

An electronic equipment contains a circuit board in a casing. The casing encloses a spacing and has a top panel covering the spacing. The circuit board has a pair of end portions and a major surface extending between the pair of the end portions for mounting electronic parts on the major surface. The circuit board is disposed in the spacing of the casing in opposed relation to the top panel. A stay member has an elongated shape extending between the pair of the end portions of the circuit board for reinforcing the major surface of the circuit board. The stay member has a bottom coupling portion disposed in contact with the major surface of the circuit board for coupling with the circuit board, and a top contact portion disposed in contact with a back surface of the top panel for engagement with the casing.

Electronic equipment with stay for reinforcing circuit board within casing

There is provided an illuminated switch construction, which make it possible to ensure excellent visibility and operability of the illuminated switch, while the illuminated switch can be compact in size, cost-reduced and simple in structure. A substrate is formed therein with a plurality of guide holes. A switch unit and an LED are arranged on the substrate at locations adjacent to each other. The switch unit has a driven part driven for reciprocating motion. A pushbutton unit is formed by a diffuser sheet and a button body which are stacked one upon the other on a lamp house. A plurality of guide pins extend from the lamp house and are fitted through the respective guide holes. The lamp house has a fitting part formed therein with a fitting hole in which a head part of the driven part of the switch unit is fitted and held. When a depressing part of the button body is depressed, the pushbutton unit performs reciprocating motion in a manner interlocked with the driven part. The guide pins slide within the respective guide holes, whereby the reciprocating motion of the pushbutton unit is guided.

Growing community of inventors

Hamamatsu, Japan

Tsutomu Watanabe