JPH0336657Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a support structure for fixing the tip of a landing of a spiral staircase to the landing foundation of a building.

[Conventional technology]

Spiral staircases installed outdoors or indoors in buildings or residences are constructed using central pillars (pillar pipes) erected along the building.
Each cantilever plate is fixed in a spiral shape, and
The base of the landing assembly that forms the access passage to the building is fixed at the height of the middle pillar corresponding to each floor level of the building, and the tip of the landing is fixed to the landing foundation on the building roof. has been done.

When installing these spiral staircases, the main body of the spiral staircase is constructed using the conventional construction method or the recently popular unit assembly method, and then the tip of the landing is finally placed on the building foundation. I try to support and fix it.

However, it is inevitable that the finished dimensional accuracy of the construction of the support and fixing part of the spiral staircase will have errors within a certain range, not only in the conventional construction method but also in the unit assembly method. In conventional construction, errors have been absorbed through the experience and ingenuity of on-site workers, but this requires labor and effort and has poor construction performance, so several improvement plans have been proposed.

Figure 4 shows an example of the above proposal.
FIG. 3 shows a side view of essential parts of the support device disclosed in Publication No. 32661. I will leave the details to the cited documents and explain only the outline: 10 is the landing floor of the building, 11 is the landing foundation,
12 is the center pillar of the spiral staircase, 13 is the spiral staircase landing,
14 is a landing frame, 15 is a tread, 16 is a handrail, and 17 is each step board. Reference numerals 18, 19, and 20 are a support body with an angled cross section, an adjuster bolt/nut, and a mounting bolt/nut, respectively, according to the invention of this cited example. Each hole for the bolt 19 or 20 in the angled horizontal leg portion and the vertical leg portion of the support body 18 is in the form of an elongated hole extending in the horizontal left-right direction and the up-down direction in the figure, and has a predetermined range in the direction of each elongated hole. The position is adjustable, depending on the final dimensional position error of the tip of the landing.
Adjustment is to be made in each direction using the adjuster bolt/nut 19 and each of the above-mentioned elongated holes.

[Problem that the invention attempts to solve]

However, in the conventional proposed example as described above, since the adjustment directions for dimensional errors exist independently in the horizontal direction left and right and up and down directions in FIG. 4, the combination adjustment procedure is complicated and the configuration is difficult. The number of parts is large, the structure requires a step between the building landing floor 10 and the spiral staircase landing tread 15, and the appearance is not very elegant.

The present invention was devised in view of the problems of the conventional construction methods and the proposed examples as described above, and it is an object of the present invention to eliminate the above-mentioned drawbacks and provide a landing support device particularly suitable for unit-assembled spiral staircases. It is intended to.

[Means for solving problems]

Therefore, in the present invention, a fixing member having upper and lower shoulders is fixed to the vertical wall of the building facing the tip of the spiral staircase landing, and a right angle part is fixed to the bottom of the tip of the landing. A deformable landing fixing seat is disposed so as to abut against the upper shoulder of the fixing member with components of force in two directions perpendicular to each other, and the right angle portion of the landing fixing seat and the lower shoulder of the fixing member A clamp fitting having a cam profile formed so as to simultaneously press both apexes of the fixing member inward in a wedge-like manner is configured to be tightened against the vertical wall surface of the building by a fastener. This aims to achieve the above objective.

〔Example〕

The present invention will be explained below based on examples. FIG. 1 shows a cutaway side view of essential parts of an embodiment of a landing support structure according to the present application.

1 is a building landing floor surface, 1a is its vertical wall surface, 2 is a spiral staircase landing tread assembly, and 3 is a handrail support. A landing wall fixing member 4 is installed on the building vertical wall 1a.
is fixed by a plurality of anchor bolts 5, and this fixing member 4 is attached to upper/lower shoulders 4c/4d on a rectangular base plate 1a, as shown in the plan view and A-A sectional view in FIG. Two channel members 4b having a diameter are fixed by welding, and two nuts 4e are fixedly installed inside the web portion of each channel member 4b.

At the lower end of the landing tread assembly 2, there is a landing fixing seat 6 having the cross-sectional shape shown in the figure and having a right angle portion 6a.
are arranged and fixed at substantially the same length at a position corresponding to the channel member 4b of the fixing member 4 with a predetermined designed gap therebetween. 7 is landing tread assembly 2
This is a corner reinforcement plate. 8 is a clamp fitting with an irregular channel cross section, the shape of which is shown in three views in Figure 3.The web part forms a gentle mountain shape with the apex at the straight line connecting the centers of the two bolt holes, and both flanges are is the right angle portion 6a of the landing fixing seat 6.
A cam contour 8a is formed such that the apex of the landing wall fixing member 4 and the lower shoulder 4d are simultaneously compressed inwardly into the fixing member 4 in a wedge shape. Hexagonal bolts 9 are inserted into the two bolt holes,
It is configured to engage with each nut 4e inside the web portion of the channel member 4b of the landing wall fixing member 4 to press the landing fixing seat 6 onto the wall fixing member 4.

When the hexagonal bolt 9 is tightened to a predetermined tightening torque, the landing fixing seat 6 receives strong component forces in the vertical and parallel directions to the wall surface 1a from the wedge-shaped cam contour 8a, and the resultant force is applied from the tread assembly mounting portion. In addition, the landing tread assembly 2 is also deflected to a certain extent, and the landing wall fixing member 4 on the building side is deformed due to the predetermined design clearance and the construction of the spiral staircase.
The right angle portion 6a is brought into close contact with the upper shoulder portion 4c of the fixing member 4 by absorbing the gap caused by the error in the vertical direction, and the tip of the landing tread plate assembly 2 can be easily and reliably supported and fixed on the building vertical wall surface 1a. .

〔effect〕

As explained above, according to the present invention,
A deformable landing fixing seat provided at the tip of the spiral staircase landing tread assembly is attached to a fixing member fixed to the vertical wall of the building using a clamp fitting having a cam profile.
By tightening and fixing the bolts to the vertical wall through the fasteners so as to have both horizontal and parallel force components, it is possible to reduce the dimensional error in mounting to the building due to the construction of a spiral staircase. It can be easily absorbed and firmly supported and fixed by a simple operation, and the building landing floor and the spiral stair tread can be designed to be on the same level, and the fixing part is attached to the bottom of the tread assembly. Therefore, there is an advantage that the appearance is not damaged.

[Brief explanation of the drawing]

FIG. 1 is a cutaway sectional view of essential parts of an embodiment of the landing support structure according to the present invention, FIGS. 2 and 3 are diagrams showing the shapes of the main components of the support structure, and FIG. FIG. 3 is a side view of a main part of an example of a proposal for improving the support structure. 1... Building landing floor surface, 1a... Vertical wall surface, 2...
...Landing tread, 4...Landing wall fixing member, 4a/4
b...Upper/lower shoulder, 6...Landing fixed seat, 6a
...Right angle part, 8...Clamp fitting, 8a
...wedge-shaped cam profile, 9...hexagonal bolts (fusuna).

Claims (1)

[Scope of utility model registration request] A landing wall fixing member having upper and lower shoulders is fixed to the vertical wall surface of the landing foundation of the building facing the tip of the spiral staircase landing, while a deformable member has a right angle part fixed to the lower part of the tip of the landing. A landing fixing seat is disposed so as to abut against the upper shoulder of the fixing member with components of force in two directions perpendicular to each other, and the right angle part of the landing fixing seat and the lower shoulder of the fixing member a clamp member having a cam profile formed so as to simultaneously press each vertex portion of the fixing member inwardly in a wedge-like manner;
A landing support structure for a spiral staircase, characterized in that it is configured to be tightened against a vertical wall surface of the building by fastener means.