Opening/closing device for opening/closing bodies

An opening/closing device for opening/closing bodies, comprising of:

• a pair of brackets fitted on two sides at an upper end of a rear part of a lavatory stool;
• a pair of cases, each for one bracket of the pair of brackets, each case of the pair of cases being for detachably bearing and holding one side of one bracket;
• a holder for detachably housing part of each case of said pair of cases, said holder having a fitting section for a lavatory seat or lid, and disposed rotatably between said pair of brackets;
• and
• a pair of supporting members each having a fitting section for the lavatory lid or seat positioned outside said brackets, and detachably borne and held by said cases;
• wherein
• a pair of rotating shafts on each of which rotation control means is caused to act, provided within each of said cases, one of said rotating shafts being disposed so as to rotate together with said holder and the other of said rotating shafts being disposed so as to rotate together with said supporting members.

An opening/closing device for opening/closing bodies, comprising of:

• a pair of brackets fitted on two sides at an upper end of a rear part of a lavatory stool;
• a pair of cases, each for one bracket of the pair of brackets, for bearing and holding one side of said one bracket;
• a holder housing for receiving part of each of said cases, having a fitting section for a lavatory seat or lid, and disposed rotatably between said pair of brackets;
• and
• a pair of supporting members each having a fitting section for the lavatory lid or seat positioned outside said brackets, and borne and held by said cases;
• wherein
• a pair of rotating shafts on each of which rotation control means is caused to act, said rotating shafts being provided within each of said cases, one of said rotating shafts being disposed so as to rotate together with said holder housing and the other being disposed so as to rotate together with said supporting members, and
• each of the rotation control means caused to act on said rotating shafts is a torsion spring caused to act between said rotating shaft and cases.

An opening/closing device for opening/closing bodies, comprising of:

• a pair of brackets fitted on two sides at an upper end of a rear part of a lavatory stool;
• a pair of cases, each for one bracket of the pair of brackets, for bearing and holding one side of said one bracket;
• a holder housing for receiving part of each of these cases, having a fitting section for a lavatory seat or lid, and disposed rotatably between said pair of brackets;
• and
• a pair of supporting members each having a fitting section for the lavatory lid or seat positioned outside said brackets, and borne and held by said cases;
• wherein
• a pair of rotating shafts on each of which rotation control means is caused to act, provided within each of said cases, one of said rotating shafts being disposed so as to rotate together with said holder housing and the other of said rotating shafts being disposed so as to rotate together with said supporting members, and
• said rotation control means caused to work on each of said rotating shafts is composed of a fixed cam provided within the case, a rotating-sliding cam, opposite to this fixed cam, fitted so as to freely slide on a respective rotating shaft and to rotate together with the rotating shaft, and a spring pressing this rotating-sliding cam toward the fixed cam.

An opening/closing device for opening/closing bodies, comprising of:

• a pair of brackets fitted on two sides at an upper end of a rear part of a lavatory stool;
• a pair of cases, each each of one bracket of the pair of brackets, for bearing and holding one side of said one bracket;
• a holder housing for receiving part of each of these cases, having a fitting section for a lavatory seat or lid, and disposed rotatably between said pair of brackets;
• and
• a pair of supporting members having a fitting section for the lavatory lid or seat positioned outside said brackets, and borne and held by said cases;
• wherein
• a pair of rotating shafts on each of which rotation control means is caused to act, is provided within each of said cases, one of said rotating shafts being disposed so as to rotate together with said holder housing and the other of said rotating shafts being disposed so as to rotate together with said supporting members, and
• one of said rotation control means caused to work on each of said rotating shafts is composed of a torsion spring caused to act on the rotating shaft, while the other is composed of a fixed cam provided within the case to let said rotating shaft penetrate rotatably, a rotating-sliding cam, opposite to this fixed cam, fitted so as to freely slide on the rotating shaft and to rotate together with the rotating shaft, and a spring provided between this rotating-sliding cam and the fixed cam, wound around said rotating shaft, and pressing said rotating-sliding cam toward said fixed cam.