JPS5912334Y2 - stairs - Google Patents

Description

[Detailed explanation of the idea] This idea concerns stairs.

Conventional stairs are shaped by inserting treads and risers into the side panels from the side corresponding to the back of the stairs, making construction difficult and making it difficult to replace treads and risers in the event of damage. It had drawbacks.

Therefore, the object of this invention is to provide a staircase that is easy to assemble and construct, and whose treads and risers can be replaced extremely easily.

An embodiment of this invention is shown in FIGS. 1 and 2.

That is, this staircase has a plurality of tread fitting lateral grooves 2 formed on the inner surface of each of the pair of side plates 1, 1 from the front end to the rear end, and the pair of side plates 1, 1
For each of the tread plate fitting lateral grooves 2, 2 facing each other,
As shown in Fig. 1, there is a groove 3 on the rear end and a step 4 on the lower edge of the front end.
The springs 6 are inserted into the grooves 3 of the lower tread body 5 by inserting both ends of the tread body 5 into the front end sides of the side plates 1, 1.
The upper end of the riser 7, which is erected with its lower end enlarged through the step part 4, is received by the stepped part 4 of the upper tread body 5, and the front end of the tread plate is fixed to the front end of the tread board, which has the same width as the tread body 5. Both ends of the front end member 8 of the footboard are connected to the horizontal grooves 2, 2 for fitting the footboard.
The upper end of the riser board 7 is clamped between the rear end of the step board/front end member 8 and the stepped portion 4 of the step board main body 5.

The groove 3 at the rear end of the tread body 5 is formed by attaching a member 9 having an L-shaped cross section, and the front end of the tread body 5 has a stepped portion 10 on its upper edge, so that the upper and lower edges Each step 4, 1 of
0, a protrusion 11 is formed at the front end of the footboard main body 5.

A tread plate front end member 8, which is in contact with the front end of the tread plate body 5 and forms a tread plate together with the tread plate body 5, has its front end shaped like a slope to match the front end inclination angle of the side plate 1, A concave groove 12 that can fit into the protrusion 11 of the step board body 5 is formed at the rear end, and the concave groove 12 and the protrusion 11 fit together to connect to the front end of the footboard main body 5.

The concave groove 12 is formed to be shallower than the protruding dimension of the protrusion 11 so as to form a concave portion for clamping the upper end of the riser 7 in the joined state, and also to secure the tread body 5 and the tread plate on the upper surface side. A non-slip groove 13 is formed between the front end member 8 and the front end member 8.

The assembly and construction order of this staircase is as follows.

(1) Fit the tread body 5 from the front end side of the side plate 1 as shown in Fig. 3B into each tread fitting horizontal groove 2 formed on the inner surface of the side plate 1 shown in Fig. 3A. 2) A riser 7 is applied to the groove 3 at the rear end of the tread body 5 through a spring 6 and is erected as shown in FIG. Bring it into contact with part 4 (
The height of the riser board 7 is made shorter than the distance between the step part 4 of the upper step board body 5 and the bottom surface of the groove 3 of the lower step board main body 5, so that it can be easily erected. By forming the spring 6 in the concave groove 3, the spring 6 can be set upright without wobbling.

(3) Cut a horizontal groove 2 for fitting the tread plate from the front end side of the side plate 1, and further fit the tread front end member 8 as shown in FIG. The front end member 8 of the tread plate is fixed to the step part 4 at the front end of the main body 5 by means of nailing or the like from the front end side of the side plate 1.

With this structure, the step board and the riser board 7 can be easily installed from the front end side of the side plate 1, and the installation work in a narrow space at the rear end side of the side plate 1 can be avoided.

Similarly, even if the tread plate (composed of the tread front end member 8 and the name plate body 5) and the riser plate 7 are damaged, they can be easily replaced.

As described above, the staircase of this invention has a pair of side plates with multiple horizontal grooves for fitting the treads on the inside surface, a groove for installing the riser on the rear end, and a riser on the lower edge of the front end. The upper end of the riser plate is formed by forming a stepped part for clamping and having a side end fitted into the tread plate fitting lateral groove of the side plate, and the tread plate body having a side end fitting into the tread plate fitting lateral groove of the side plate. Since the tread plate and riser are equipped with a front end member for clamping the tread plate, the tread plate and riser board can be installed from the front side of the work space, which is wide, making installation easier and making it easier to replace the tread plate and riser board if they are damaged. It also has the effect of being extremely easy to perform.

In addition to the above-described structure in which the treadle is engaged horizontally from the front end of the side plate as a structure for horizontally suspending the tread by engaging it in a fitting groove formed on the inner surface of the side plate, there is also the structure shown in FIGS. 4 and 5. The structure shown in is also possible.

That is, in this staircase, a tread plate divided into two pieces 14.14 in the direction of depth and width are connected at a hinge 15 on the back side to form a foldable tread plate 16.
is placed between a pair of side plates 1', 1' in a slightly folded state as shown in FIG. Fitting groove 2 on the inner surface of
', 2'.

The joining end surfaces of the two tread plate segments 14.14 are serrated.

This structure not only makes it easier to fit the fitting grooves 2' and 2' There is no need to do this, and a firm fixation can be achieved just by fitting.

In addition, when an anti-slip groove 16a is formed in the middle area of the front edge of the surface of the tread 16 as shown in FIG. 4, the width of the tread 16 is shortened according to the width of the stairs to be installed. However, both ends are cut to the same width to form the anti-slip groove 1.
It is necessary to prevent the tread plate 6a from shifting to one side of the tread plate 16, but in the case of this tread plate 16, both ends of the tread plate 16 can be cut to the same width at the same time in the folded state as shown in FIG. becomes easier.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of essential parts showing one embodiment of this invention, Fig. 2 is a vertical cross-sectional view thereof, Fig. 3 is an explanatory diagram of its assembly, and Fig. 4 is a tread used in another example of a staircase structure. FIG. 5 is an explanatory diagram of its assembly, and FIG. 6 is an explanatory diagram of its shortening process. 1...Side plate, 2...Horizontal groove for fitting treadle,
3...concave groove, 4...step, 5...
...Tread body, 6...Spring, 7...Riser board, 8...Tread plate front end member.

Claims (1)

[Scope of utility model registration request] A pair of side plates with multiple horizontal grooves for fitting the treads on the inner surface, a groove for installing the riser at the rear end, and a step for attaching the riser to the lower edge of the front end. a tread body whose side end fits into the tread fitting lateral groove of the side plate; and a tread front end member whose side end fits into the tread plate fitting lateral groove of the side plate and which clamps the upper end of the riser board. and stairs.