Mitsubishi Steel Mfg. Co., Ltd.

Nec Corporation

Minoru Ohiraki

Hitoshi Sato

Sakae Higano

Masatomo Mizuta

Yasuhiro Mitsui

Toshio Omi

Mitsuru Sendouda

Shinji Ikeuchi

A hinge mechanism that generates a stress at the start and end points of arbitrary opening and closing range can be constructed by causing one cam set of two cam sets in which a rotating cam and a fixed cam engage only once in 360&#xb0; rotation to generate a stress at the start point of the rotating range or opening and closing range of the hinge mechanism, and causing the other cam set to generate a stress at the end point of the rotating or opening and closing range. The hinge mechanism of the present invention achieves durability, good feeling, and size and weight reduction.

Hinge mechanism

A two-shaft hinge component equipped with a rotation limiting mechanism in which a construction is adopted that makes possible a rotation limiting mechanism with increased durability, reduced size and lighter weight. A torque unit is constituted by a fixed cam and a rotary cam being in coaxial abutment with a rotary shaft and an opening/closing shaft, in a hinge of two-shaft construction in which a rotary shaft passes through an opening/closing shaft, sliding frictional torque and a click action being generated during rotation and opening/closing operation by an abutting cam surface. The torque unit is constructed independently on the rotary shaft and the opening/closing shaft and, in addition, there is provided a rotation limiting mechanism whereby the rotary action of the rotary shaft is subjected to limitation in accordance with the opening/closing angle of the opening/closing shaft. With the two-shaft hinge according to the present invention, a reduction in size and weight is achieved by reducing the number of components, a stable torque and click action are generated, durability is improved and additional space is secured by a concentrated arrangement of the components.

Two-shaft hinge equipped with a rotation limiting mechanism

A foldable and portable mobile communication terminal is formed as a two-folded type in which a lower-side body unit and upper-side unit are coupled openably and closably by a two-shaft hinge mechanism. The two-shaft hinge mechanism includes a first hinge unit that allows the upper-side body unit to rotate with respect to the lower-side body unit up to the open state defining a predetermined talking position, and a second hinge unit that allows the first hinge unit to rotate in a direction different from the aforementioned rotational direction of the first hinge unit. The first and second hinge units are coupled so that the rotational center axes thereof orthogonally intersect each other.

Foldable and portable mobile communication terminal

A flat-type seismic isolator for exhibits includes a lower face plate installed on a foundation; an upper face plate that is installed to the lower surface of a seismic isolation object and placed above the lower face plate; an intermediate plate placed between the upper face plate and the lower face plate; and elastic restoring means and damping means provided for returning the plates to their original positions and placed in a lower area between the lower face plate and the intermediate plate and an upper area between the intermediate plate and the upper face plate, respectively. In the lower area, one lower linear guide rail is disposed in the center of the area and guide rails and rollers are disposed on opposite sides of the lower linear guide rail in parallel relation therewith for smoothly moving the intermediate plate with respect to the lower face plate in one linear direction. In the upper area, one upper linear guide rail is disposed in. the center of the area and guide rails and rollers are disposed on opposite sides of the upper linear guide rail in parallel relation therewith for smoothly moving the upper face plate with respect to the intermediate plate in one linear direction. The lower linear guide rail and the upper linear guide rail orthogonally cross each other, and the guide rails and rollers in the lower area and the upper area orthogonally cross each other.

Growing community of inventors

Chiba, Japan

Minoru Ohiraki