Patent ID: 11866930
Assignee: SEKISUI HOUSE, LTD.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A partition wall sound insulation structure comprising:
a floor material on which a floor surface is formed;
a ceiling material on which a ceiling surface is formed, the ceiling surface being opposed to the floor surface in a vertical direction with a space in a building interposed therebetween;
a partition wall that partitions the space in a horizontal direction and includes:
a pair of face materials including a first face material and a second face material that extend in the vertical direction and are disposed with a hollow portion interposed therebetween in the horizontal direction, the first face material having a first inner surface facing the hollow portion, the second face material having a second inner surface that faces the hollow portion and is opposed to the first inner surface,
a first stud that is disposed in the hollow portion, that supports the pair of face materials, that extends in the vertical direction, and that is fixed to the first inner surface, and
a second stud that is disposed in the hollow portion, that extends in the vertical direction, and that is fixed to the second inner surface;

a positioning member for positioning the first stud and the second stud in the horizontal direction; and
a sound insulation face material disposed on at least one of the floor surface and the ceiling surface in the hollow portion,
wherein the pair of face materials is disposed with a gap formed in the vertical direction between the at least one surface and the pair of face materials,
the sound insulation face material is thicker than the gap, is disposed so as to block the gap from the hollow portion side, and includes a first surface facing the hollow portion and having a surface density higher than that of the positioning member,
the positioning member is disposed in the hollow portion so as to sandwich the sound insulation face material between the at least one of the floor surface and the ceiling surface and the positioning member, the positioning member including a first positioning portion provided between the first stud and the first inner surface, a second positioning portion provided between the second stud and the second inner surface, at least one central positioning portion provided between the first positioning portion and the second positioning portion, and at least one base portion connecting the first positioning portion and the second positioning portion to the at least one central positioning portion to form two grooves into which end portions of the first stud and the second stud are respectively inserted, and
the at least one central positioning portion extends in the vertical direction from the at least one base portion to a position which allows the at least one central positioning portion to position the first stud and the second stud in the horizontal direction, and extends in a wall surface direction of the partition wall.