Alps Electric Co., Ltd.

Moritoshi Nakamura

Hirofumi Okumura

Tetsuhiro Kiyono

Jun Nakanowatari

Yasuichi Ono

Yoshitada Amagishi

Ichiro Mutoh

Disclosed is an angle detecting device which comprises a shaft fixedly attached on a frame; a detecting lever to be detected which is rotatably mounted on the shaft; an angle sensor having a rotating portion to be actuated to turn in engagement with the lever to be detected, for detection of rotation angle of the lever to be detected; a bracket mounted with the angle sensor and rotatably installed on the shaft; and screws capable of changing the mounting position of the bracket in relation to the shaft supporting the bracket.

Angle detecting device

A printed circuit board has a terminal area to which the terminal area of a sheet member is electrically connected. The sheet member is bonded to the printed circuit board with a hot-melt adhesive. The layer of the hot-melt adhesive which is formed on the sheet member and does not face the terminal area of the printed circuit board protrudes from the surface of the terminal area of the sheet member. The printed circuit board includes an insulating substrate made from a material containing silicon dioxide. A metal salt that imparts hydrophobicity to the bonded surface of the substrate is added to the layer of the hot-melt adhesive.

Connecting structure of terminal area of printed circuit board

A membrane switch comprises an insulating substrate on the surface of which thin-film-like electrodes are formed with a connecting lug section provided integrally at one end of the substrate. Thin-film-like conductive layers continuing from the electrodes are extending up to the connecting lug section and the extended end portions of the conductive layers compose a connecting terminal section.

Membrane switch

A keyboard switch includes upper and lower substrates spaced from each other by a spacer having a plurality of spaces in which upper and lower contacts respectively on the upper and lower substrates are placed, respectively. An insulating sheet is sandwiched between the lower substrate and a base plate and has a plurality of slits aligned respectively in vent holes in the base plate and the lower substrate for preventing substantial passage therethrough of dirt or dust while allowing air to flow therethrough.

Keyboard switch

A variable attenuator comprises a generally horseshoe-shaped main resistance element, a sliding member movable thereover, and a bypass provided around that portion of the main resistance element adjacent the end portion of the path of said sliding member. The bypass is made of a conductive element or conductive element and a resistance element, the amount of current flowing through said bypass being thereby increased to enable a maximum attenuation.

Variable attenuator

A main resistance element and an elongated conductor are arranged coaxially and a plurality of secondary resistance elements are arranged radially and connected between the main resistance element and the conductor. A slider is ohmically movable on the main resistance element to provide a variable attenuator with low impedance and logarithmic attenuation to at least -60 db. An auxiliary resistance element may be provided coaxially with the main resistance element and the conductor with another set of secondary resistance elements connecting the auxiliary resistance element with the conductor, the ends of the main and auxiliary resistance elements being connected together.

A resistance element for obtaining a continuous and linear output characteristic is obtained by the combination of a zig-zag resistance element and a resistance film of higher resistivity disposed thereover.

Resistance element for variable resistors

A variable resistor has an insulating substrate plate, a resistance body formed on the substrate plate and a slider adapted to slide along the resistance body. The resistance body is formed in a winding pattern to provide a larger range of variation of resistance for a given stroke of the slider. The slider has a plurality of contacts adapted for sliding along the resistance body so that at least one of the contacts is kept in contact with the winding resistance body so as to provide a linear change of the output of the resistor.

Growing community of inventors

Miyagi, Japan

Moritoshi Nakamura