JPH0718219B2 - Stair unit - Google Patents

Description

TECHNICAL FIELD The present invention relates to a staircase unit.

[Prior Art] Conventionally, staircase units as described in Japanese Utility Model Publication No. 50-104406, Japanese Patent Application Laid-Open No. 52-104317, Japanese Utility Model Publication No. 54-4244, etc. have been proposed. The staircase unit joins a plurality of upper beams, lower beams and columns to form a substantially box-shaped unit body, and a floor material is provided below the unit body,
The stairs are arranged in this unit body.

[Problems to be Solved by the Invention] However, in the conventional staircase unit, the lower end of the staircase is joined to the unit body. For this reason, the lower end of the stairs is supported by the unit body that constitutes the vibration system, and the vibration that occurs in the stairs when walking the stairs induces resonance of the stair support part (unit body) and is amplified to a larger vibration. . In addition, this amplified vibration is easily transmitted from the lower end of the stairs to the unit body, and it is easy to induce large vibrations in the sash attached to the unit body, furniture mounted in the unit body, and the like.

An object of the present invention is to suppress the occurrence of vibration of stairs and prevent this vibration from being transmitted from the lower end of the stairs to the unit body.

[Means for Solving Problems] In the present invention, a plurality of upper beams, lower beams and columns are joined to form a unit body having a substantially box shape, and a floor material is provided below the unit body. In a staircase unit in which a staircase is arranged in the space above the floor material in this unit body, the lower end of the staircase is not joined to the unit body, but is directly supported on the foundation by a support material that penetrates a hole provided in the floor material. It was made to let.

[Operation] According to the present invention, the lower end portion of the staircase is directly supported by the foundation without being joined to the unit body by the support material that penetrates the hole provided in the floor material. That is, since the lower end of the stairs is supported by the foundation that does not form a vibration system, the vibration generated in the stairs during walking on the stairs does not induce resonance of the stair support portion (foundation) and is amplified to a larger vibration. In addition, the vibration generated on the stairs when walking on the stairs is not transmitted from the lower end of the stairs to the unit main body, and induces a large vibration in the sash attached to the unit main body or furniture mounted in the unit main body. Never.

[Embodiment] FIG. 1 is a front view showing a supporting structure at a lower end of a staircase, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a perspective view showing an exploded structure of a supporting structure at a lower end of a staircase. The figure is a side view showing the support structure at the upper end of the stairs, and FIG. 5 is a perspective view showing the overall structure of the stair unit.

The staircase unit 10, as shown in FIG.
Inside 11 is a folded staircase consisting of a lower staircase 12, a landing 13, and an upper staircase 14.

The unit body 11 includes four upper beams 15, lower beams 16 and columns 17 each.
Are joined together to form a substantially box shape, and the lower beam 16 is fixed in a state of being mounted on the foundation 18 (see FIGS. 1 and 2). In FIGS. 1 and 2, 19 is a floor beam, 20 is a floor joist, and 21 is a floor material.

The landing 13 includes a landing frame 22 and four pillars 23 that support the landing frame 22 on the lower beams 16 of the unit body 11.

As shown in FIGS. 1 to 3, the lower end of the lower staircase 12 is directly supported by the foundation 18 without being joined to the unit main body 11. That is, the insert anchor 24 is embedded in the foundation 18, the steel plate lower support plate 25 is placed on the upper surface of the base 18, and the square steel pipe short column 26 that is a support member is mounted on the upper surface of the lower support plate 25. A steel plate upper support plate 27 is placed on the upper end of the short column 26, and an attachment plate 28 provided on the lower end of the lower staircase 12 is placed on the upper surface of the upper support plate 27. A washer 29 is placed on the upper surface of the attachment plate 28, and these members 25 to 29 are tightly connected by bolts 30 screwed to the insert anchor 24.
In the tightly bound state, the upper ends of the short columns 26 penetrate through the cutout holes 31 provided in the floor material 21 of the unit body 11 and are set so as to project upward from the upper surface of the floor material 21. As a result, the attachment plate 28 of the lower stairs 12, the upper support plate 27 and the unit body
A constant gap is formed between the floor material 21 of 11 and the lower end of the lower stair 12 to prevent contact with the unit body 11 side.

The upper end of the lower staircase 12 is fixed to the landing frame 22 with bolts 33 via a rubber plate 32 as a vibration damping plate, as shown in FIG.

The lower end of the upper stairs 14 is fixed to the landing frame 22 via a vibration damping plate (not shown), and the upper end of the upper stairs 14 is fixed to the support beam 34 of the unit body 11 via a vibration damping plate (not shown). Has been done.

Next, the operation of the above embodiment will be described.

According to the above embodiment, the lower end of the lower staircase 12 is the unit body.
Notch hole 31 provided in floor material 21 without being joined to 11
It is supported directly on the foundation 18 by a short column 26 extending therethrough. That is, since the lower end of the lower staircase 12 is supported by the foundation 18 that does not form a vibration system, the vibration generated in the staircase 12 during walking on the stairs induces the resonance of the staircase support (base 18) and is amplified to a larger vibration. Never. In addition, the vibration generated in the stairs when walking on the stairs is not transmitted from the lower end of the stairs 12 to the unit main body 11, and the sash attached to the unit main body 11 or the furniture placed inside the unit main body 11 is Does not induce large vibration.

[Advantages of the Invention] As described above, according to the present invention, it is possible to suppress the occurrence of vibration of stairs and prevent the vibration from being transmitted from the lower end of the stairs to the unit body.

[Brief description of drawings]

FIG. 1 is a front view showing the supporting structure of the lower end of the stairs, FIG. 2 is a side view of FIG. 1, FIG. 3 is an exploded perspective view of the supporting structure of the lower end of the stairs, and FIG. 4 is the upper end of the stairs. FIG. 5 is a side view showing the support structure of the section, and FIG. 5 is a perspective view showing the overall structure of the staircase unit. 10 …… Stairs unit, 11 …… Unit body, 12 …… Lower stairs (stairs), 15 …… Upper beam, 16 …… Lower beam, 17 …… Column, 18…
… Foundation, 21 …… Floor material, 26 …… Short pillar (support material), 31 …… Notched hole.

Claims (1)

[Claims] 1. A plurality of upper beams, lower beams and columns are joined together to form a substantially box-shaped unit body, and a floor material is provided below the unit body, and a floor material upper space within the unit body is provided. A staircase unit in which a staircase is arranged in the staircase unit, in which the lower end portion of the staircase is not directly joined to the unit body but is directly supported by a foundation by a support member penetrating a hole provided in the floor material.