Hinge device

In a hinge device comprising a first hinge member (10) attached to a first object (5),

• a second hinge member (20) attached to a second object (6) and rotating about a rotation shaft line (L) with respect to the first object,
• a shaft member (40) connecting rotatably the first hinge member and the second hinge member and its shaft line being provided as the rotation shaft line,
• a rotational force imparting mechanism (70) converting urging force to a rotational force to the one direction when the second object moves with receiving the urging force along the rotation shaft line to a direction of the urging force and rotates to one direction,
• a dumper mechanism (30) reducing the rotational force of the second object to the one direction,
• the dumper mechanism (30) comprising,
• a linear dumper (31) disposed to one hinge member among the first hinge member (10) and the second hinge member (20) and positioned apart from the shaft member (40) in an orthogonal direction to a shaft line of the shaft member while positioned along the shaft member,
• a first cam part (32) disposed to the one hinge and positioned at one end of the linear dumper, and
• a second cam part (35) positioned to another hinge member among the first hinge member (10) and the second hinge member (20)
• wherein in a process where the second hinge member (20) moves to the direction of the urging force together with the second object (6) while rotating to the one direction, accompanied with a cam action of the first cam part (32) and the second cam part (35), the linear dumper (31) is pressed and shortened.