Matsushita Electric Industrial Co., Ltd.

Yusho Nakase

Yasuchika Kudo

Masaki Nakase

Katsuichi Minami

Koji Sakai

Takehiko Konja

Kenji Nishimura

Yoshiharu Abe

Katsumasa Yamaguchi

Tatsuya Tsuda

Kenji Yasufuku

Yasuo Kuboki

An opening and closing device and an electronic apparatus using this device. In an urging section, a movable member including a movable cam on its side is urged by a spring. A slide member includes, at one end, a stationary cam, opposed to the movable cam, for resiliently contacting the movable cam. The movable member is urged in opening and closing directions in open and closed states, respectively, according to which portion of the stationary cam resiliently contacts the movable cam. A reversing section includes a release member and a reversing member. The release member includes a release cam resiliently contacting a support cam at the other end of the slide member, and the reversing member is inserted into the slide member and includes a reversing cam. When the release cam is disconnected from the support cam, the slide member slides axially, whereby the movable cam is disconnected from the stationary cam and resiliently contacts the reversing cam. The direction that urges the movable member is thus reversed, changing from the closing to opening direction.

Opening and closing device and electronic apparatus using the same

A folding device contains a stationary part, a movable part disposed to be rotatable in flip-up (unfolding) and flip-down (folding) directions, a force-applying section disposed between the two parts, which urges the movable part in either direction according to a state of the movable part, a reversing section for allowing the force-applying section to change a direction of urging of the movable part into the flip-up (unfolding) direction when the movable part is in a folded state, and an actuator for operating the reversing section. Pressing the actuator being in the folded state allows the reversing section to switch the direction of urging of the movable part into flip-up (unfolding) direction. In the electronic equipment of the present invention, the stationary and the movable housings are connected to the stationary and the movable parts of the folding device, respectively. The structures can provide a folding device equipped with a simple one-hand flipping-up (unfolding), and electronic equipment using the device.

Folding device and electronic equipment using the same

A lever switch includes a case having a common contact and fixed contacts provided on inner wall opposite to each other. A movable contact made from elastic metal and shaped like the letter &ldquo;M&rdquo; has an intermediate section that comes into contact with the common contact. A first arm extends from each one of both ends of the intermediate section. Each one of the ends of the first arms forms a folding-back section, and a second arm is formed at the end of the folding-back section. A contact formed at the end of the second arm comes into contact with the inner wall of the case. Rotation of the lever slides a slider on the bottom plate of the case, and a pushing section provided at each one of both ends of the slider brings the contact into contact with the fixed contact or leaves the contact from the fixed contact.

Lever switch

A lever switch assures stable contact just after having its contact points contacted with each other when a lever is rotated. The lever switch includes a case, a common contact and a fixed contact both provided to case's side walls adjacent to each other, a lever rotatably held by at an opening provided in a side wall facing the common contact, a movable contact which electrically contacts and removes between the common contact and the fixed contact through being bent with the lever being rotated. A fixed section disposed at a tip of a first arm of the fixed contact is press-fitted between the common contact and a supporting protrusion. A contact section disposed at a tip of a second arm of the fixed contact elastically contacts with the left-side wall of the case. A driving section of the lever comes into contact with a bent section of the first arm of the movable contact.

A lever switch includes a case, and a stationary contact, common contact, movable contact and lever which are disposed in the case. The movable contact is made up of elastic metal and includes a stationary portion, contact portion, and a curved portion located between the stationary portion and the contact portion. The stationary portion is connected to the common contact. The movable contact is disposed in a state of bending so that the contact portion may come in contact with or apart from the stationary contact. An operating portion is protruded from an opening, and a driving portion is located inside the case and abuts on the curved portion of the movable contact. When the operating portion is manipulated, the driving portion pushes the curved portion, and then the contact portion comes in contact with or apart from the stationary contact.

Lever switch and detecting device using same

A lever switch comprises a case ( ) provided with a common contact ( ) and stationary contacts ( ), a generally M-shaped movable contact ( ) having a middle part ( A) in resilient contact with the common contact ( ) and contact points ( E) at both ends thereof, a lever ( ) disposed rotatably to the case ( ), and a pair of cams ( ). The contact points ( E) at both ends of the movable contact ( ) are in contact resiliently with two confronting inner walls of the case ( ) where the stationary contacts ( ) are disposed. The contact points ( E) of the movable contact ( ) slide and come into contact resiliently with the stationary contacts by turning motion of the lever ( ).

A lever switch comprises a box-shaped case,with the top open having fixed contact points,on the inner bottom surface. A movable contact element,made of an elastic metal, formed into an approximately reverse isosceles triangle having an elastic contact point,E,,F provided at the tip end of two respective elastic feet,C,,D extended from the equilateral sides to be crossing downward is placed in the case. An actuating body,of approximately isosceles triangle shape is disposed on the top of the movable contact element,so as protrusions,C,,D provided at the bottom corners press the upper surface of the flexed portions,A,,B, respectively, locating at the upper corners of the movable contact element,The operation lever,E of actuating body,operates smoothly responding to the forces exerted from the three directions, both the right and the left, as well as from the up.

Lever switch and method of operating the same

A lever switch comprises a box-shaped case 11 with the top open having fixed contact points 12, 13, 14 on the inner bottom surface. A movable contact element 15 made of an elastic metal, formed into an approximately reverse isosceles triangle having an elastic contact point 15E, 15F provided at the tip end of two respective elastic feet 15C, 15D extended from the equilateral sides to be crossing downward is placed in the case. An actuating body 16 of approximately isosceles triangle shape is disposed on the top of the movable contact element 15 so as protrusions 16C, 16D provided at the bottom corners press the upper surface of the flexed portions 15A, 15B, respectively, locating at the upper corners of the movable contact element 15. The operation lever 16E of actuating body 16 operates smoothly responding to the forces exerted from the three directions, both the right and the left, as well as from the up.

An insulating case that has contact members 21A, 21B, which are fixed to contact member holding boards 26A, 26B by pushing-in the members into respective holes 27A, 27B of the boards and caulking the members to the boards. A tray 29 is formed by an insert-molding process with insulating resin with the contact member holding boards 26A, 26B fixed in the bottom of the tray 29, with the terminals 23A, 23B extending outside the tray, while the contact parts 22A, 22B extend upward from the inside of the bottom of the tray.

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Fukui, Japan

Yusho Nakase