| 摘要 |
A lid opening-closing device includes a case-type foot member, a case-type supporting member, an elastic means, a cam mechanism, a rotation preventing means. The foot member has a connecting assembly which is movable in the up-down direction and inserted in an attaching hole. The supporting member supports a lid so as to open and close and connected with the foot member via a hinge pin. The elastic means is disposed between the supporting member and the foot member to make the supporting member buffer toward the opening direction of the lid. The cam mechanism is disposed between the supporting member and the foot member and acts on the elastic means to control the supporting member to rotate. The rotation preventing means is disposed between the supporting member and the foot member and automatically prevents the supporting member which makes the lid opening to rotate. |
