JPH0549940U - Stair mounting structure - Google Patents

Abstract

(57) [Summary] [Purpose] The stairs can be easily installed by dropping them from above. [Structure] Stair mounting beam 1 to U-shaped connecting fitting 2
Project forward. Connecting fitting 2 at the upper end of girder 4 of stairs 3
A connecting piece 6 parallel to the front piece 5 is provided. The connecting piece 6 is fixed to the front piece 5 with a fixing tool 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a technique for mounting a stair on a stair mounting beam.

[0002]

[Prior Art]

 Conventionally, the stairs 3 are mounted on the stair mounting beam 1 as shown in FIG. That is, as shown in FIG. 7, an L-shaped connecting protruding metal fitting 20 is projected forward from the stair mounting beam 1, and the stair 3 is lowered from above in front of the stair mounting beam 1 to form the girder 4 of the stair 3. The front end portion of the connecting protruding metal fitting 20 was applied to the side surface of the upper end portion of, and fixed by a fixing member 7 such as a bolt.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional example, the front end of the connecting protruding metal fitting 20 projecting forward from the stair mounting beam 1 is applied to the side surface of the upper end of the girder 4 of the stairs 3 and fixed by the fixing device 7. Therefore, when the stairs 3 are lowered from the front in front of the stair mounting beam 1 to be constructed, the connecting protruding metal fittings 20 projecting in the front of the stairs 3 become an obstacle, and as a result, the stairs 3 must be fitted from the side. On the other hand, the construction is troublesome at the site where the width is limited.

The present invention has been devised in view of the above-mentioned problems of the conventional example, and its purpose is to attach a stair to a staircase that can be easily installed by dropping the stairs from above. To provide.

[0005]

[Means for Solving the Problems]

 The mounting structure of the stairs of the present invention has a U-shaped connecting fitting 2 projecting forward from the stair mounting beam 1, and a connecting piece parallel to the front piece 5 of the connecting fitting 2 at the upper end of the girder 4 of the stair 3. 6 is provided and the connecting piece 6 is fixed to the front piece 5 by a fixing tool 7. By adopting such a configuration, the problems of the conventional example described above are solved and the object of the present invention. Was achieved.

[0006]

[Action]

 A U-shaped connecting metal fitting 2 is projected forward from the stair mounting beam 1, and a connecting piece 6 parallel to the front piece 5 of the connecting metal fitting 2 is provided at the upper end of the girder 4 of the stairs 3 and the connecting piece 6 is in front. By fixing to the piece 5 with the fixing device 7, when the stairs are lowered from above and the construction is carried out, the front end of the connecting protruding metal fitting protruding from the stair mounting beam is fixed to the side surface of the stair girder as in the conventional case. It can be installed without interfering with the connecting fitting 2 like the one that is used.

[0007]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings. As shown in FIG. 1, the stair mounting beam 1 has a U-shaped cross section composed of a rear vertical piece 8 and upper and lower horizontal pieces 9. The stair mounting beam 1 is installed between columns 10 on both sides. It is attached to the pillar 10. Here, the rear vertical piece 8 of the stair mounting beam 1 is mounted so as to be flush with the rear surface of the pillar 10. The rear vertical piece 8 of the staircase mounting beam 1 is connected to the front by a fastener 7 such as a bolt, which is a U-shaped connecting metal fitting 2 having a U-shape toward the front. It is flush with the front surface of the column 10 and parallel to the front surface of the column 10.

As shown in FIG. 5, the staircase 3 is constructed by installing a large number of riser plates 13 between the girders 4 on both sides, and the top riser plate 13 is not attached. The girder 4 of the stairs 3 has a U-shaped cross section, and the fixing piece 12 of the L-shaped metal fitting 11 is fixed to the side surface of the upper end of the girder 4 of the staircase 3 and the connecting piece 6 of the L-shaped metal fitting 11 is fixed. Is located on the rear end face portion of the girder 4 and is parallel to the front face of the column 10 when the stairs 3 are attached.

Then, the staircase 3 having the above-mentioned structure is lowered from the upper side as shown in FIG. 4, and the connecting piece 6 of the L-shaped metal fitting 11 attached to the girder 4 of the floor 3 is projected from the stairway mounting beam 1. The connection piece 6 and the front surface piece 5 are fixed to each other by a fixing tool 7 such as a bolt by hitting the front surface piece 5 of the connecting metal fitting 2. Then, with the staircase 3 attached to the staircase mounting beam 1 in this way, the top riser plate 13 is mounted as shown in FIG. 1 to cover the gap between the staircase 3 and the stairway mounting beam 1. It also covers the upper surface of the stair-mounting beam 1, and is additionally attached between the horizontal piece 13a at the upper end of the lower riser plate 13 and the lower horizontal piece 13b of the upper riser plate 13 by retrofitting. 14 is installed and installed.

By the way, one girder 5 of the staircase 3 may be attached to a pillar 10 as shown in FIG.

[0011]

[Effect of the device]

 In the present invention, as described above, the U-shaped connecting metal fitting is projected from the stair mounting beam in the forward direction, and the connecting piece parallel to the front piece of the connecting metal fitting is provided at the upper end of the stair girder. Since the connecting piece is fixed to the front piece with a fixing tool, there is no possibility that the protruding metal fittings for connection will protrude from the stair mounting beam and interfere with it when the stairs are lowered from above. , It is possible to install stairs easily.

[Brief description of drawings]

FIG. 1 is a sectional view of the present invention.

FIG. 2 is a cross-sectional view before mounting the same foot plate.

FIG. 3 is a plan view of the above.

FIG. 4 is an explanatory diagram of a state in which the stairs are being lowered before mounting the same as above.

5A and 5B show stairs used in the above, wherein FIG. 5A is a front view and FIG. 5B is a side view.

FIG. 6 is a sectional view of a conventional example.

FIG. 7 is a drawing showing a stairway mounting beam of a conventional example, (a) is a plan view, and (b) is a front view.

[Explanation of symbols]

 1 Stair mounting beam 2 Connecting bracket 3 Stairs 4 Girder 5 Front piece 6 Connecting piece 7 Fastener

Claims (1)

[Scope of utility model registration request] 1. A connecting bracket having a U-shape protruding from a stair mounting beam forward, a connecting piece parallel to a front piece of the connecting bracket is provided at an upper end portion of a stair girder, and the connecting piece is fixed to the front piece. Mounting structure for stairs that is fixed with tools.