JPH0439942Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is a staircase that can be installed on various slopes such as embankments, parks, stadiums, etc. to create an attractive staircase that is in harmony with the surrounding landscape. The present invention relates to a prefabricated stair block that allows a sloped portion to be constructed at a low cost, and also relates to a block body constituting the prefabricated stair block.

(Problems to be solved by the prior art and the invention) Stairs can be installed on slopes of embankments of rivers, coasts, etc., or on various slopes of parks, stadiums, etc., as stairs for going up and down, seats for watching sports, etc. It has already been proposed to lay stair blocks on the slope in order to form a staircase.

In order to meet the demand for improved urban landscapes in recent years, as shown in Fig. 13, grooves were installed in parallel on the tread b of the stair block, which is easily seen by the public (indicated by symbol c in Fig. 13). By arranging protrusions in parallel, etc., the stair block a
Some people also wear make-up.

As shown in Fig. 13, this type of stair block is manufactured as an integral piece with an inclined bottom part e laid on a slope part d and a horizontal upper part f where the tread b is approximately horizontal. When decorating part b, it was necessary to provide an uneven part on the inner surface of the mold to form the decorative part.

Now, if we are trying to meet the recent demands for improved urban landscapes with the conventional decorative staircase blocks mentioned above, we will have to prepare many types of staircase blocks with different tread designs in order to respond to a variety of construction sites. Therefore, it is necessary to individually design and manufacture many types of formwork, and the number of stair blocks that can be manufactured using a single formwork must also be small.

By the way, the formwork for manufacturing concrete blocks with complex shapes such as stair blocks is expensive, so if it is not used to manufacture a considerable number of stair blocks, the manufacturing cost of stair blocks will increase significantly. Therefore, when using the conventional manufacturing method of manufacturing the inclined bottom part e and the horizontal top part f as one piece, there is a problem that it is difficult to meet the recent demands for high-mix, low-volume production of decorative staircase blocks. It was hot. Another problem was that a large space was required to stock many types of stair blocks, which had to be large blocks.

The present invention has been made in view of these conventional problems, and provides a prefabricated stair block and a prefabricated stair block that enable the construction of stair-like slopes with a wide variety of designs at low cost. This concerns the block itself.

(Means for Solving the Problems) A prefabricated stair block 1 according to the present invention is characterized by comprising a block main body 2 and a decorative tread 3 combined with the block main body 2. The block main body 2 has a front edge portion and a rear edge portion of an inclined bottom surface portion 6 which is laid on a slope portion of an embankment or the like.
The front wall portion 7 and the rear wall portion 9 are respectively erected, and
A connecting wall portion 10 is connected between the front wall portion 7 and the rear wall portion 9.
(Single connecting wall or multiple connecting walls provided at required intervals in the length direction of the inclined bottom surface)
The surface formed by the upper surface of the front wall section 7, the upper surface of the rear wall section 9, and the upper surface of the connecting wall section 10 is approximately Formed as a horizontal upper surface 11,
Further, a first fixing means 17 is provided on the horizontal upper surface 11. On the other hand, the decorative tread 3 has a horizontal upper surface 11
It has a flat plate shape and is fixedly integrated with the first fixing means 17 by means such as engagement, screwing, press-fitting, etc. interposed) second fixing means 23.

Further, one of the block bodies (hereinafter referred to as block bodies) 2 constituting the prefabricated stair block according to the present invention has a front edge portion and a rear edge portion of the inclined bottom surface portion 6 which is laid on the slope part of an embankment or the like. The wall portion 7 and the rear wall portion 9 are respectively erected, and the front wall portion 7 and the rear wall portion 9 are connected by a connecting wall portion 10, so that the upper surface of the front wall portion 7 and the rear wall portion 9 are connected. The surface formed by the upper surface and the upper surface of the connecting wall section 10 is formed as a horizontal upper surface 11 that is approximately horizontal when the inclined bottom surface section 6 is placed on the inclined surface section. 11 is provided with a first fixing means 17 which is fixed and integrated with the second fixing means 23 provided on the lower surface of the decorative treadle 3 by means of engagement, screwing, press fitting, etc. It is characterized by:

In addition to the block body 2 according to the present invention, a front wall portion 7 and a rear wall portion 9 are respectively erected at the front edge portion and the rear edge portion of the inclined bottom portion 6 which is laid on a slope portion of an embankment or the like. At the same time, the front wall part 7 and the rear wall part 9 are connected by a plurality of connecting walls 10 at required intervals in the length direction of the inclined bottom part 6, so that the upper surface of the front wall part 7 and the rear wall part The surface formed by the upper surface of the portion 9 and the upper surface of the connecting wall portion 10 is formed as a horizontal upper surface 11 that is approximately horizontal when the inclined bottom surface portion 6 is placed on the inclined surface portion. Said horizontal upper surface 1
1 is provided with a first fixing means 17 that is fixedly integrated with the second fixing means provided on the lower surface of the decorative treadle 3 by engaging, screwing, press-fitting, etc. Each of the connecting walls located at the block is characterized by being provided with a hanging hole 15 into which a hanging part of a block hanging tool can be hung.

The first fixing means 17 and the second fixing means 2
3 should be configured as follows. That is, the first fixing means 17 is provided with a pair of opposing locking protrusions 31, 31 that can elastically expand outward, while the second fixing means 23 is The locking protrusion 42 is formed with a locking step 49 that can engage with the tip 47 of the locking protrusion 31.
2 is preferably formed so as to protrude from the lower surface side of the decorative stepping board 3.

(Function) Therefore, the decorative stylus 3 and the block body 2 each having an uneven pattern such as a woodgrain pattern on the upper surface,
When they are fixed and integrated by the first fixing means 17 and the second fixing means 23, a desired decorative staircase block is manufactured.

The first fixing means 17 is formed as an elastically deformable locking protrusion 31 and the second fixing means 23
is formed as a locking protrusion 42 that can engage with the tip 47 of the locking protrusion 31, the first fixing means 17 and the second fixing means 23 are aligned. By placing the decorative treadle 3 on the horizontal upper surface 11 of the block main body 2, the decorative treadle 3 is automatically attached to the block main body due to the engagement between the first fixing means 17 and the second fixing means 23. Fixedly integrated with 2.

The hanging holes 15, 15 provided in the outermost connecting wall part 10 are used for hanging the hooking part of the block hanging tool when installing the stair block at the construction site.

(Example) An example of the present invention will be described below based on the drawings.

In Fig. 1, a staircase block 1 according to the present invention is shown.
is a combination of a block body 2 and a decorative stylus 3.

As shown in FIGS. 2 and 3, the block main body 2 has, for example, a front edge portion and a rear edge portion of an inclined bottom surface portion 6 mounted on a slope portion 5 of an embankment of a river or the like.
A front wall portion 7 with a large rising height and a rear wall portion 9 with a small rising height are respectively erected, and a space between the front wall portion 7 and the rear wall portion 9 is formed, for example, at the central portion and on both sides. , connecting wall portions 10, 10, 1
0 and formed by the upper surface of the front wall section 7, the upper surface of the rear wall section 9, and the upper surface of the connecting wall section 10, the inclined bottom section 6 is placed on the inclined surface section 5. A horizontal upper surface 11 is formed which is substantially horizontal in the horizontal state. A notch 13 is provided at the front edge of the lower end of the front wall 7, as shown in FIGS. 1 and 2, and fits into the rear edge 12 of the rear wall 9. In addition, the connecting wall portions 1 located on both sides
0 and 10 are provided with hanging holes 15 and 15, and on the lower side of the connecting wall portion of the inclined bottom surface portion 6,
Through holes 16, 16, 16 for inserting reinforcing bars extending in the direction of inclination of the inclined bottom surface portion 6 are provided (third
(see figure). Furthermore, first fixing means 17 are embedded in the horizontal upper surface 11 at required intervals. Note that the specific configuration of the first fixing means 17 will be described later.

The decorative tread 3 is formed into a rectangular plate shape,
Its left and right length is, for example, 1/3 of the length of the block body 2. Also, the front and rear lengths of the decorative tread 3 are:
As shown in FIG. 1, when the rear surface portion 19 is in contact with the front wall portion 20 of the upper stair block, the front edge portion 21 slightly protrudes forward from the front wall portion front edge 22 of the block body 2. It is done as follows. And on the bottom surface of the decorative tread 3, a second
As shown in Figures 1 to 3, second fixing means 23 that engage and integrate with the first fixing means 17 are provided, for example, at positions forming the apexes of a triangle. On the other hand, the upper surface of the decorative tread plate 3, that is, the tread surface 25, is formed with an uneven portion (not shown) representing, for example, a woodgrain pattern or various geometric patterns.

The first fixing means 17 is, for example, as shown in FIG.
After forming rectangular pieces 30, 30 by providing continuous U-shaped cuts 29 at the lower ends in the opposing portions of 7,
The rectangular piece is bent into the inside of the cylinder at its upper end to form locking protrusions 31, 31 facing each other in an inverted V-shape, and a thread groove 32 is formed in the upper end portion of the inner peripheral surface of the cylinder 26. It will be done. The first fixing means 17 having such a configuration is attached to the open end 3 of the cylindrical body 26.
3 is embedded in the block body 2 so as to be flush with the horizontal upper surface 11 (see FIG. 2). As shown in FIG. 5, the first fixing means 17 is formed by screwing together a threaded portion 39 of a countersunk head bolt 37 inserted through a countersunk hole 36 provided in the formwork 35 with a threaded groove 32 of the cylindrical body 26. It is fixed to the formwork 35 by. Further, the cylinder body peripheral wall portion 2 resulting from the formation of the locking protrusion 31
The openings 40, 40 of No. 7 shall be closed using adhesive tape or the like prior to pouring concrete into the formwork.

On the other hand, as shown in FIGS. 3 and 6, the second fixing means 23 is screwed into a nut member 41 embedded in the lower surface of the decorative treadle 3.
A locking protrusion 42 fixed in a protruding state on the lower surface side is formed as a protruding bolt 42a in this embodiment. And the first fixing means 17
By positioning the decorative treadle 3 and the second fixing means 23 and placing the decorative treadle 3 on the horizontal upper surface 11, the decorative treadle 3 is automatically fixed to the block body 2. To explain the process of fixing, as the decorative tread 3 approaches the horizontal upper surface 11, the bolt head 43 of the protruding bolt 42a pushes the locking protrusions 31, 31 apart against the elastic action of the cylindrical part. The locking protrusion 3 is inserted into the body 26 and
The tip portions 47, 47 of the bolt head 43 are detached from the circumferential surface of the bolt head 43 and elastically return to the original bent state.
3, and the protruding bolt 42a becomes unable to be removed from the cylinder body 26 due to the engagement between the distal end portion 47 and the locking step 49. is being done. Note that before inserting the protruding bolt 42a into the cylindrical body 26, if an appropriate amount of epoxy resin or mortar is injected into the cylindrical body 26, when the protruding bolt 42a is housed within the cylindrical body 26, This epoxy resin etc. will be filled into the gap formed between the cylinder body 26 and the protruding bolt 42a, and as the epoxy resin etc. hardens, the first fixing means 17 and the second fixing means The fixed integration with 23 becomes even more reliable. FIG. 7 shows another example of the first fixing means 17, in which windows 50, 50 are formed in opposing portions of the peripheral wall 27 of the cylindrical body 26 with a bottom, and the first fixing means 17 is formed in a dogleg shape. One bent part 52 of the bent piece 51 exhibiting the above is inserted into the cylinder body 26 through the window part 50, and the other bent part 53 is fixed to the outer surface 55 of the peripheral wall part of the cylinder body 26, and the piece is inserted into the cylinder body 26. Opposing bent portion 5
2 and 52 are configured to function as locking protrusions 31 and 31 that can engage with the upper peripheral edge portion (locking step portion 49) of the bolt head 43 of the protruding bolt 42a, as described above. Also, in the upper end portion of the inner circumferential surface of the cylinder 26, there is a countersunk hole 36 provided in the formwork 35, as described above.
A threaded groove 32 is formed to be threaded into a threaded portion 39 of a countersunk head bolt 37 that is inserted through the threaded part 39 of the countersunk bolt 37. In this embodiment, a nut 56 is provided at the center of the bottom surface of the cylindrical body 26.
is fixed to the nut 56, and a threaded end portion 60 of an auxiliary bolt 59, which is inserted through a bolt hole 57 provided to pass through the center of the countersunk bolt 37, is screwed into the nut 56. When using the auxiliary bolt 59 in this way, even if the cylindrical body 26 is relatively long, it can be properly buried in the block body 2 without being affected by the pressure of concrete injection into the formwork. I can do it.

The block main body 2 and the decorative stylus 3 having the above-mentioned configuration are fixedly integrated by the first fixing means 17 and the second fixing means 23, thereby achieving the desired effect. A staircase block 1 is now constructed.

FIG. 1 shows a step-type revetment constructed on an embankment of a river, coast, etc. using the stair block 1 having the above-mentioned structure.

FIG. 10 shows another embodiment of the block body 2, in which an opening 61 is formed in the inclined bottom surface 6 except for the portion where the front wall 7, the rear wall 9, and the connecting wall 10 are present. It is provided. The block main body 2 having such a structure can be combined with the decorative step 3 to form a required staircase block in the same way as the block main body, and may also be used alone as a vegetation block. In that case, the open space 62 formed between the connecting walls 10, 10 (including the space formed by connecting the block bodies) is such that an appropriate amount of soil is accommodated in the space 62. The hanging holes 15, 15 provided in the connecting wall portions on both sides also function as drainage holes in each vegetation portion. In addition, when the block body 2 is used as a vegetation block in this way, it is planned that the decorative treadle 3 will be fixed to the block body 2 in the future, and the appearance of the block body is taken into account. It is preferable to cover the opening 63 of the cylindrical body constituting the first fixing means with a cap.

11 and 12 show another embodiment of the block body 1, in which the connecting wall portion 10 is singular.

(Effect of idea) The present invention has the following excellent effects.

The stair block according to the present invention adopts a structure in which the decorative tread is placed on the horizontal upper surface of the block main body and the decorative tread is fixed to the block main body.
By manufacturing many types of decorative treads with different tread designs, you can select an appropriate decorative tread from among them and combine it with the block body to fix and integrate it, so that the block body is the same. To easily and inexpensively produce decorative staircase blocks with different aesthetic impressions even though they are physical objects. However, by laying the stair block on the slope of the construction site, it is possible to construct a well-designed staircase that harmonizes with the surrounding landscape.

Incidentally, it is true that manufacturing multiple types of stair blocks as integrally molded products with different tread designs leads to a significant increase in the manufacturing cost of decorative stair blocks due to the expensive formwork, as mentioned above. It was impossible.

On the other hand, the form of the decorative stile according to the present invention is simple and has a plate-like overall shape, so the formwork is much needed compared to the case where the entire decorative stair block is manufactured in one piece. It is inexpensive and therefore enables the production of a wide variety of decorative stamps in small quantities.

Therefore, as mentioned above, by combining and integrating decorative stair blocks decorated as required with the block main body, decorative stair blocks with different aesthetic impressions can be manufactured at low cost even if the block main bodies are the same. It will become.

The decorative treads that determine the design of the stair block have a small plate shape, so even if there are many types of decorative treads, they can be stocked in a stacked state. This eliminates the problem of requiring a large inventory space, which occurs when many types of items are stocked.

The first fixing means includes a pair of opposing elastically deformable locking protrusions, and the second fixing means is capable of engaging with the distal end portions of the locking protrusions and is decorative. If it is formed as a locking protrusion that protrudes on the lower surface side of the treadle, the first
When the fixing means and the second fixing means are aligned and the decorative stylus is placed on the horizontal upper surface of the block body, the decorative stylus is automatically fixed and integrated with the block body, so that the block body and the decorative stylus are fixed together. Integration work can be done easily and quickly.

Moreover, since the locking protrusion protrudes from the bottom side of the decorative tread as described above, the part fixed by the first fixing means and the second fixing means is not visible, and the stair block is manufactured with good appearance. It will be done.

If a hanging hole is provided in the outermost connecting wall of the stair block, the hanging part of the block hanging tool can be hooked to the hanging hole to ensure safe and efficient lifting of the stair block. can be done.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the stair block according to the present invention together with its state of use, Figs. 2 and 3 are perspective views showing the stair block disassembled, and Fig. 4 is an example of the first fixing means. FIG. 5 is a cross-sectional view showing the state in which the first fixing means is attached to the formwork, and FIG. 6 is a cross-sectional view showing the state in which the first fixing means and the second fixing means are fixed and integrated. 7 is a perspective view showing another example of the first fixing means, FIG. 8 is a sectional view showing the first fixing means shown in FIG. 7 attached to the formwork, and FIG. 9 is a perspective view showing another example of the first fixing means. Fig. 7 is a cross-sectional view showing the state in which the first fixing means and the second fixing means are fixed and integrated, Figs. 10 to 12 are perspective views showing other embodiments of the block body, and Fig. 13 is a conventional FIG. 2 is a perspective view showing an example of a decorative stair block in a state in which it is used. 1... Stair block, 2... Block body, 3
... Decorative tread, 6... Inclined bottom part, 7... Front wall part, 9... Rear wall part, 10... Connecting wall part, 11...
Horizontal upper surface, 15... hanging hole, 17... first fixing means, 23... second fixing means, 31... locking protrusion, 42... locking protrusion, 47... locking protrusion tip portion, 49...locking stepped portion.

Claims (1)

[Claims for Utility Model Registration] (1) The block body 2 comprises a block body 2 and a decorative tread 3 combined with the block body 2, and the block body 2 is attached to the front edge of an inclined bottom part 6 laid on a slope part of an embankment, etc. A front wall part 7 and a rear wall part 9 are respectively provided upright in the section and the rear edge part, and the front wall part 7 and the rear wall part 9 are connected by a connecting wall part 10, so that the front wall part 7 The surface formed by the upper surface, the upper surface of the rear wall section 9, and the upper surface of the connecting wall section 10 is formed as a horizontal upper surface 11 that is approximately horizontal when the inclined bottom section 6 is placed on the inclined surface section. and the horizontal upper surface 1
1 is provided with a first fixing means 17. On the other hand, the decorative stepping board 3 has a flat plate shape that is placed on the horizontal upper surface 11, and the lower surface thereof is provided with a means for engaging, screwing, press-fitting, etc. A prefabricated stair block characterized in that a second fixing means 23 is fixedly integrated with the first fixing means 17 by a means. (2) In the block main body used to construct the prefabricated stair block according to claim (1), the leading edge portion and the trailing edge portion of the sloped bottom portion 6 laid on the slope of an embankment, etc. , a front wall part 7 and a rear wall part 9 are respectively erected, and the front wall part 7 and the rear wall part 9 are connected by a connecting wall part 10, so that the upper surface of the front wall part 7 and the rear wall part The surface formed by the upper surface of 9 and the upper surface of the connecting wall portion 10 is
The inclined bottom surface 6 is formed as a horizontal upper surface 11 that is substantially horizontal when placed on the inclined surface. A block main body constituting a prefabricated stair block, characterized in that it is provided with a first fixing means 17 that is fixedly integrated with the fixing means 23 by means such as engagement, screwing, press-fitting, etc. (3) In the block main body constituting the prefabricated stair block according to claim (1), in the front edge portion and the rear edge portion of the inclined bottom surface portion 6 laid on the slope part of an embankment, etc., the front wall portion 7 and rear wall portion 9 are respectively erected, and a plurality of connecting wall portions 1 are provided at required intervals in the length direction of the inclined bottom surface portion 6 between the front wall portion 7 and the rear wall portion 9.
0, and the surface formed by the upper surface of the front wall section 7, the upper surface of the rear wall section 9, and the upper surface of the connecting wall section 10 is connected at The horizontal upper surface 11 is formed as a substantially horizontal horizontal upper surface 11, and the horizontal upper surface 11 is provided with a second fixing means provided on the lower surface of the decorative stepping board 3 by means of engagement, screwing, press-fitting, etc. A first fixing means 17 that is fixedly integrated is provided, and each of the outermost connecting walls has a
A block main body constituting a prefabricated stair block, characterized in that it is provided with a hanging hole 15 into which a hanging part of a block hanging tool can be hung. (4) The first fixing means 17 includes a pair of opposing locking protrusions 31, 31 that can elastically expand outward.
while the second fixing means 23
is formed as a locking protrusion 42 having a locking step 49 that can engage with the tip 47 of the locking protrusion 31, and the locking protrusion 42 is located on the lower surface side of the decorative treadle 3. 2. The prefabricated stair block according to claim 1, wherein the stair block is formed so as to protrude from the stair block. (5) The first fixing means 17 includes a pair of opposing locking protrusions 31 and 31 that can elastically expand outward.
while the second fixing means 2
3 is formed as a locking protrusion 42 having a locking step 49 that can engage with the tip 47 of the locking protrusion 31, and the locking protrusion 42
A block main body constituting a prefabricated staircase block according to claim 2 or 3, wherein the block main body is formed so as to protrude from the lower surface side of the block main body.