JP2878206B2 - Stair block - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a staircase block which is installed side by side on an inclined surface to form a staircase. The present invention relates to a staircase block capable of improving aesthetic appearance as well as aiming.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 1, this type of staircase block has a trapezoidal block whose wall thickness increases as it goes forward as a whole. Laying by joint has been done.

Further, in order to strengthen the abutment between the front end face a and the rear end face b, the front end of the block is formed as an overhang, and the rear end of the front row block is fitted under the overhang so as to cover it. However, there has been no attempt to achieve a strong connection by fitting the protrusions.

[0004]

The conventional staircase block can only be laid by surface joining in which the end faces are joined to each other as an end. Therefore, the blocks in the front row and the rear row are staggered every other block. It can respond to the horizontal force to a certain degree by laying it down, but it has no power at all in the vertical direction, including overfitting, and can be used only on gentle slopes. In particular, there has been a problem that the building collapses easily in the case of an earthquake accompanied by vertical sway or a shore storm during a typhoon.

[0005]

According to the present invention, a front end of a tread surface and a step portion are formed as a projecting portion projecting from a main body.
At the rear end of the overhanging bottom, a recess is provided for fitting with the fitting ridge formed at the rear end of the front row block, and the rear end of the tread surface is formed at the overhanging bottom and the recess at the front end of the rear row block. It is composed of a mating descending surface and a fitting ridge. The fitting ridge at the rear end of the front row block fits into the recess of the rear row block, and it is firmly connected to the vertical relationship between the front row block and the rear row block. Was obtained.

[0006] Further, the bottom of the overhanging portion is formed as an inclined surface toward the rear end at an obtuse angle from the step portion, and the fitting ridge is formed to be inclined rearward, so that the rear row block can be formed at the time of laying and fitting. The protrusion can be inserted into the recess of the front row block from a diagonal direction without being lifted greatly.

With this configuration, the weight of one block is 2 tons.
It can cope with the laying of revetment heavy blocks required to be 500 or more, which is also advantageous in terms of formwork molding.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a block body according to the present invention,
Has a large thickness, and becomes thinner toward the rear, so that the trapezoid is turned over as a whole.

At the upper end of the front end 1a of the main body 1, there is provided an overhanging portion 3 provided with a concave portion 2 which abuts on the rear surface Ab of the front row block A and which fits into a fitting ridge A4 formed thereon. It is overhanging.

At the rear end of the rear surface 1b of the main body 1, a fitting ridge 4 is fitted along the ridge line of the rear surface 1b and the rear end surface 13 to be fitted to the recess B2 provided in the overhang portion B3 of the rear row block B. It is formed obliquely upward.

In the staircase block according to the present invention thus constructed, the bottom surface 12 of the overhang portion 3 abuts on the back crushed stone G laid on the slope and the rear surface Ab of the front row block A, and The parts 2 are juxtaposed while being fitted to the fitting ridge A4 of the front row block A.

Further, the rear row block B abuts on the rear back portion Ab while fitting the recess B2 provided in the overhang portion B3 with the fitting ridge 4, and the wall thickness of the overhang portion 3 is set to the step 5 so that the front row block B has a step 5. Form stairs backward from the block.

In another embodiment, the step 5 is slightly longer than the tread surface 11, and is formed as a fitting portion having a bottom at the top and a bottom at the top due to the thickness of the lower portion of the step 5 and the inner wall of the recess 2. At the same time, the ridge angle between the tread surface 11 and the rear rear surface 1b is reduced to substantially a right angle, and the space between the rear rear surface 1b and the fitting ridge 4 forms the bottom portion B12 of the projecting portion B3 of the rear row block B and the inner wall of the concave portion B2. The connection between the front and rear row blocks can be further strengthened by forming the recessed portion into which the butted portion B6 formed by the thickness fits.

In the case of this embodiment, a technique is required in terms of mold forming, and the fitting work at the time of laying is relatively difficult.

The blocks are usually arranged in a zigzag pattern in the front row and the rear row, and the tread 11 is decorated with natural stone or pseudo stone.

[0016]

Since the present invention is constructed as described above, the recess 2 at the back of the overhang provided at the front end of the block is fitted to the fitting ridge A4 of the block A in the front row, and protrudes upward. The overhang bottom 12 overlaps the upper surface of the rear back portion A13 of the front row block, and furthermore, a fitting ridge 4 is formed on the rear back portion 1b of the block 1, and a recess B2 at the back of the overhang portion of the rear row block B.
Since a fitting structure that fits in is constructed, a strong laying structure that can cope with vertical forces can be obtained.

[Brief description of the drawings]

FIG. 1 is a side view of a slope on which a conventional staircase block not using the present invention is laid.

FIG. 2 is a side view of a slope on which a staircase block according to an embodiment of the present invention is laid.

FIG. 3 is a side view of a slope on which a staircase block according to another embodiment of the present invention is laid.

FIG. 4 is a perspective view showing an example of a staircase block according to an embodiment of the present invention.

FIG. 5 shows a staircase block 1 according to another embodiment of the present invention.
It is a perspective view showing an example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Block main body 1a Block main body front end 1b Block main body back part 11 Block main body tread surface 12 Block main body protruding part bottom 13 Block main body rear end face 2 Block main body concave part 3 Block main body protruding part 4 Block Fitting ridges of the main body 5 Stepped portion 6 Abutting portion constituted by the bottom of the overhanging portion and the thickness of the inner wall of the concave portion A Front row block B Rear row block G Back crushed stone

Claims (2)

(57) [Claims] 1. A front end of a tread surface and a step portion are formed as a projecting portion projecting from a main body, and a fitting projection formed at a rear end of a bottom of the projecting portion at a rear end of a front row block is fitted. A staircase block, wherein the rear end of the tread surface is formed as a bottom surface of the overhang portion of the front end of the rear row block, a descending surface fitted into the recessed portion, and a fitting ridge. 2. The method according to claim 1, wherein the bottom of the overhanging portion is formed as an inclined surface facing the rear end at an obtuse angle from the step portion, and the fitting ridge is inclined backward. Stair block