Abstract: An arm wearable device including a case, a module which has a brittle member and is provided in the case, and a plurality of holding portions which holds the module in the case such that flexural deformation of the module is restricted to deformation where a virtual straight line extending in a longitudinal direction of the brittle member serves as a center line.

Abstract: The present invention intends to provide the partially reinforcing method and apparatus for reinforcing the required part of the metal material having good forming property and relatively low strength (hardness and yield stress) by the press processing. The partial reinforcing method is comprised of a first step and a second step. The first press step generates a plastic strain by a plastic flow of metal material on a front surface and a rear surface of the part to be reinforced, to form a front convex-concave surface and a rear convex-concave surface. The second press step further generates the plastic strain by the plastic flow on the front convex-concave surface and the rear convex-concave surface, to form a front plane surface and a rear plane surface.

Abstract: The present invention intends to provide the partially reinforcing method and apparatus for reinforcing the required part of the metal material having good forming property and relatively low strength (hardness and yield stress) by the press processing.

Abstract: A structural member having a closed section, and an apparatus and a method for producing the same are provided to decrease production costs and secure the dimensional accuracy by a simple construction. The apparatus produces a structural member provided with a channel-shaped sectional portion and closed sectional portions adjacent thereto by bending a work and includes a press mold formed of a punch and a die oppositely installed and used for press-forming so that both side edges of the work are caused to overlap on the bottom wall of the channel-shaped sectional portion, and a fall-down prevention means which prevents both side edges opposed to each other of the work to be press-formed in the press mold from falling down and guides both side edges so that the end faces thereof are brought into contact with each other.