Alps Electric Co., Ltd.

Shinichi Nagano

Shin Yoshida

Yasuo Takii

Koji Dono

Fumio Sakamoto

Shuuichi Chiba

Toshiji Chiba

Shigeru Satoh

Atsushi Itoh

A connection electrode that is formed of solder on an electronic component side and a tip portion of an elastic contact each other at a contact portion. Regarding the elastic contact, a resistive layer is formed in the tip portion, and the tip portion is placed in a clearance of an induction coil. When a predetermined high-frequency current is passed through the induction coil, electromagnetic induction causes the resistive layer to generate heat. Solder that forms the connection electrode is melt, and flows onto the tip portion of the elastic contact. Thus, the tip portion of the elastic contact and the connection electrode can be strongly bonded together at the contact portion that is a single point therebetween.

Method for bonding metallic terminals by using elastic contact

To provide a contact, formed in an amorphous state, having better spring properties as compared to conventional one; a method for manufacturing the contact; a connection device including the contact; and a method for manufacturing the connection device. The present invention provides a contact comprising an elastically deforming portion that includes at least one amorphous part. The elastically deforming portion includes an auxiliary elastic membermade of, for example, NiP (a P content of 15 atomic percent). In this case, an amorphous phaseis predominant in the auxiliary elastic member. This enhances spring properties such as a yield stress.

Contact, method for manufacturing contact, connection device including contact, and method for manufacturing connection device

A connecting unit for establishing a connection with external connecting portions of an electronic device includes a base and a plurality of spiral contactors having a conductive layer and an auxiliary resilient layer. The top face, the bottom face, and both side faces of the conductive layer are completely surrounded by the auxiliary resilient layer. The conductive layer is composed of a material having a specific resistance lower than the specific resistance of the auxiliary resilient layer. The auxiliary resilient layer is composed of a material having a yield point and an elastic modulus higher than the yield point and the elastic modulus of the conductive layer.

Connecting unit including contactor having superior electrical conductivity and resilience, and method for producing the same

A method for making a key top of a push button is disclosed, in which a part of a light intercepting paint, which is the uppermost layer at each of displaying portions on the top surface of the key top, is removed so as to expose a displaying ink printed previously under the layer in accordance with the shape of the display portion.

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Miyagi-ken, Japan

Shinichi Nagano