JPS6226487Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a stair unit that can assemble a curved staircase without the need for supports, and particularly to a stair unit that has a removable exterior cover.

As shown in FIGS. 1 and 2, the present inventor first installed and fixed an element 4 whose upper surface is flat so as to be perpendicular to two cylindrical bodies 2 and 3 disposed in parallel, and proposed a stair unit 1 in which one cylinder 2 is projected above the element 4 and the other cylinder 3 is projected downward from the element 4, so that both cylinders 2 and 3 can be fitted together. 57-89051),
By sequentially connecting and fixing such stair units on the center line of the stair via fixing members as shown in FIG. 4, a freely curved unit stair can be formed without the need for supports, beams, etc.

However, since such a staircase unit has a structure in which the lower surface is exposed to the outside, it is necessary to attach an exterior cover to improve the aesthetic appearance. - In the above application, a staircase unit with an exterior cover 10' that covers the lower surface and is integrated with the unit main body 1 is shown, but the unit staircase formed by such a staircase unit is suitable for use in wooden houses, Western-style houses, or offices. Although it is necessary to change the design and color tone appropriately depending on the installation location because it is used in various places such as Having a variety of stair units with different shapes is extremely inconvenient from both a production and inventory standpoint, and is a major factor in increasing costs.

Moreover, if the upper surface of the element 4 is also covered with the outer cover 10' as shown in FIG.
Since the 0' itself is generally made of a soft resin material and it is difficult to achieve flatness, a step plate mounting plate 9 must be provided on its upper surface, leading to an increase in product cost.

In view of the shortcomings of the prior art, the present invention provides a stair unit with an exterior cover that is separable from the main body of the stair unit, whereby the exterior cover can be easily attached and replaced to the main body, and unit stairs of various designs can be formed. The purpose is to provide.

Embodiments of the present invention will be described below based on the drawings.

As described above, the unit main body 1 used in this embodiment has two cylindrical bodies 2 and 3 disposed in parallel with an element 4 whose upper surface is flat and fixed at right angles to the two cylindrical bodies 2 and 3. The other cylindrical bodies 3, 3 are made to protrude above the element 4, and the other cylindrical bodies 3, 3 are made to protrude downward from the element 4, and the outer diameter of one cylindrical body 2 is made slightly smaller than the inner diameter of the other cylindrical body 3, so that both of them are Constructed so that it can be fitted. The element 4 has a fan shape with one cylindrical body 2 as its starting point, and a step plate mounting hole 5 is bored at an arbitrary position on the side thereof. Further, below the element 4, there is a pair of flat plates 6 fixed to the circumferences of both the cylinders 2 and 3 along a plane perpendicular to the upper surface of the element 4.
In order to strengthen the element 4, a pair of triangular reinforcing plates 7 are arranged on the lower surface of the element 4 and the circumferential surface of the other cylinder 3 along a plane perpendicular to the upper surface of the element 4. There is.

Reference numeral 10 denotes an exterior cover 10 according to an example of the present invention, which has an open upper surface and has an inner surface shaped into a shape into which a portion located below the element 4 of the stair unit 1 can be fitted, and whose outer shape is a constant shape of the inner surface. The lower surface 18 of the cylindrical portion 12, which is surrounded by a thick wall and protrudes from the bottom of one side in a cylindrical shape, is opened, and the one cylindrical body 2 on the side of the unit main body 1 can be fitted through the opening. There is.

To explain the shape in more detail, the flat plate part 14 formed in a fan shape on the upper side of the rectangle 13 forms a concave fitting part 11 having an open top surface and into which the element 4 can be fitted, and also forms a concave fitting part 11 in which the element 4 can be fitted. The upper surface of the end portion 15 surrounded by the element 4 is formed so as to be flush with the upper surface of the element 4.

The internal shapes 16 and 17 of the flat plate portion 14 connected to the element fitting portion 11 are approximately the same as the portions 3 and 6.7 located below the element 4 on the side of the unit main body 1, in other words, directly below the fitting portion 11. The inner shape of the cylindrical body 3 is formed by forming an elliptical recess 16 with the same width as the width between both flat plates 6 in the longitudinal direction of the center thereof, and further forming an elliptical recess 16 on one side of the elliptical recess 16 at a position corresponding to the other cylindrical body 3. A cylindrical hole 17 of the same diameter is bored, and its lower surface 18 is opened.

On the other hand, the flat plate part 14 has a bolt hole 19 bored from its back surface at a position corresponding to the step plate mounting hole 5 of the element 4.

The exterior cover 10 is fitted onto the main body of the stairway unit 1, fixed with adhesive or the like or temporarily secured using the bolt holes 19, and then fixed at the center of the staircase using the fixing member 20 as shown in FIG. Wooden screws or bolts (not shown) are inserted from the back side of the flat plate part 14 using the bolt holes 19 arranged in sequence on the line to fix the footboard 21.

According to this configuration, the portion of the unit 1 located below the element 4 (the other cylindrical body 3, the flat plate 6,
Since all of the reinforcing plates 7) are formed along a plane perpendicular to the upper surface of the element 4, in other words, along a vertical plane, the inner surface shape of the exterior cover 10, which is set almost the same as the lower part, is also oriented toward the upper surface. The structure is opened only in one direction, and as a result, the exterior cover 10 can be easily installed and removed using the vertical surface on the unit side as a guide, and the inner surface is formed along the vertical surface. Because of this, one-shot molding is possible.

As a result, the external shape and color of the exterior cover 10 can be freely changed by using organic resin, foamed resin, wood-based molding material, cement, etc., and various exterior covers can be selected according to the building. However, by simply attaching this to the stair unit main body 1, a desired unit stair can be formed. In particular, the weight can be reduced by using foamed resin.

In addition, since the outer cover 10 is formed so that the upper surface of the end surrounded around the upper surface and the upper surface of the element 4 are on the same plane, there is no problem when attaching the step board. Moreover, since the element 4 is made of a steel plate or other rigid body, it is possible to use the top surface of the element 4 to attach a tread plate directly to the top surface of the element 4, and as a result, a tread plate mounting plate is not required, making it possible to The manufacturing cost of the unit itself is reduced.

Also, there is a flat plate part 1 on the upper side to match the shape of the element 4.
4, it is possible to attach bolts from the back side of the tread plate by drilling bolt holes for mounting the tread plate from the back side of the flat plate portion 14, and there is no need to drill holes on the surface, which is aesthetically preferable.

As described above, according to the present invention, the exterior cover is formed separately from the main body of the stairway unit, and
Since the internal shape is formed so as to open toward the upper surface, it can be formed in one shot, and a molded member made of any material can be used. Therefore, it is possible to provide an exterior cover with a free design and color tone that matches the building.

In addition, this exterior cover is necessary for assembling the staircase unit, and because it exposes only the inner surface of one cylinder, the inner surface of the other cylinder, and the top surface of the element, which are hidden by the treads and other stairs, it is necessary to install the exterior cover. However, there is no problem with assembly, and the appearance can be improved.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the present invention, with Figure 1 being a longitudinal sectional view, Figure 2 being a cross sectional view, Figure 3A being a plan view, Figure 3B being a front view, and Figure 4 being a front view. Indicates usage status. FIG. 5 is a sectional view showing a state in which the exterior cover of a stair unit according to the prior art is attached. 1... Unit main body, 2... One cylinder, 3...
Other cylindrical body, 4... Element, 10... Exterior cover, 11... Fitting part, 14... Flat plate part, 15...
…edge.

Claims (1)

[Scope of utility model registration request] An element 4 with a flat top surface is installed and fixed perpendicularly to two cylindrical bodies 2 and 3 arranged in parallel, and one cylinder 2 is placed above the element 4 and the other cylinder 3 is placed above the element 4. A staircase unit comprising a unit main body 1 which projects downward and is configured such that the first cylinder 2 can be inserted through the lower end opening of the other cylinder 3, and an exterior cover detachably attached to the unit main body 1, The parts 3, 6, and 7 of the unit main body 1 located below the element 4 are formed into a surface shape parallel to the direction orthogonal to the upper surface of the element 4, while the exterior cover 10 has an open upper surface and the element 4 is fitted into the surface. The internal shapes 16 and 17 of the flat plate part 14 which are connected to the element fitting part 11 are connected to the parts 3 and 6 located below the element 4 on the unit main body 1 side.
7, so that when the unit main body 1 is removably installed in the exterior cover 10, the upper end 1 of the cover located on the circumferential surface of the element 4
A stair unit characterized by being constructed so that the 5th side and the top surface of the element 4 are flush with each other.