Mitsuku Denshi Kogyo K.k.

Mitsuku Denshi Kogyo Kabushiki Kaisha

Mutsuki Denshi Kogyo Kabushiki Kaisha

Satoshi Myojin

Muneyoshi Miyata

Nobuji Hasegawa

Shuji Tanaka

A slide switch capable of significantly reducing the number of parts therefor and facilitating assembling thereof. The slide switch includes a base provided thereon with fixed contacts, a slider provided thereon with a movable contact spring and arranged on the base so as to be movable in a desired direction while being guided by a combination of guide grooves and slide elements, and a restoring spring-equipped cover provided with restoring springs adapted to be pressed against four sides of the slider. The restoring spring-equipped cover is mounted on the base from a side of an upper surface of the slider, so that the slider slid in a desired direction may be returned to an original position by restoring force of the restoring springs, whereby selective contacting between the movable contact spring and the fixed contacts permits switching operation, mode changing-over operation and the like to be selectively carried out.

Slide switch

An improved four-way switch is provided that can prevent erroneous switching operation. A closed circuit is formed by cooperatively tilting a control knob and a tiltable member in an intended direction or by depressing only the control knob, thus selectively providing electrical signals. The tiltable member, having contact spring units extended in four directions therefrom, and the control knob are disposed separately. The control knob is vertically engaged slidably into the square hole of the tiltable member. The protruded portions of the control knob are detachably engaged into the recessed portions of the tiltable member. When the center switch means is operated, only the control knob descends vertically and then restores. When the four-way switch means is operated, the tiltable member and the control knob operate in a linkage mode.

Four-way slide switch

A slide switch is provided wherein the slider can be universally slid smoothly with a small force and with high precision and accuracy. In the slide switch, to form a sliding bridge, two upper strips in parallel and two lower strips in parallel are integrally framed in a cross, square, or rectangular shape. The slider is mounted on the base in such a way that it can be slid freely and relatively in desired directions. Plural stationary contacts on the base are arranged oppositely to plural contacts of the movable contact spring piece of the slider. When the slider moves in a desired direction from its center and returns toward the center, the contacts of the movable contact spring piece are connected or disconnected to/from the stationary contacts of the base.

A device for detecting the movement of an object in order to operate a switch, wherein a top or contact of an angled contact part of a contact spring piece of the device comes into contact with a set position of an object, such as a digital video cassette ( DVC) or other cassette or disk which is being transferred so that various kinds of detecting operations are performed. The contact spring piece of the detecting device is improved in durability by forming a flexible spring part, of a predetermined dimension, between an upright mounting plate part and a U-shaped spring part of the contact spring piece. The contact spring piece is made of a plate spring. The contact spring piece includes the upright mounting plate part, the U-shaped spring part, and the angled contact part such that a long spring span is formed between the upright mounting plate part and the angled contact part. The flexible spring part is made to flex by the load of the contact pressure of the object on the angled spring part. The mounting plate part, having at least one contact spring piece functioning as a terminal, is inserted into and fixed to a slit in a back plate of an L-shaped insulating stock so that the terminal extends from a lower part of the upright mounting plate part past a lower end of a base of the L-shaped insulating stock. The angled contact part, attached to the U-shaped spring part, extends in front of the back plate. A lower end of the angled contact part is inserted into a slit in the base of the L-shaped insulating stock and the lower end of the angled contact part is pressed toward a front end of the base. A top of the U-shaped spring part of the contact spring piece engages a stopping recess at an upper end of the back plate.

Device for detecting objects moved downwardly to operate a switch

A two-way lever switch capable of being highly readily and rapidly assembled with high accuracy, exhibiting satisfactory durability, and reducing a manufacturing cost thereof. The two-way lever switch includes three component or a spring-equipped lever in which a U-shaped spring is fitted in a lever member, an upper casing in which the spring-equipped lever is mounted, and a lower casing in which the upper casing is fitted; wherein the three components are assembled together in turn without using any fasteners such as screws or the like.

Two-way lever switch

A push switch includes a sideway U-shaped spring element positioned in a recess of a holder which is precision-formed of plastic resin by molding while keeping upper and lower sections of the U-shaped spring element compressed. The lower section of the spring element being divided into an upper contact portion and a lower contact portion having a length larger than the upper contact portion. The contact spring element is then housed in a casing provided with fixed contacts. The contact spring element being pivotally supported though a support shaft in the casing while contacting the lower contact portion with a first fixed contact and striking an upper plate of the holder against a stopper to stop upward pivotal movement of the holder due to the restoring force of the spring element.

Growing community of inventors

Tokyo, Japan

Satoshi Myojin