JP3081031U - Soft footboard for sidewalk - Google Patents

Abstract

(57) [Abstract] [Object] To provide a durable soft footboard for sidewalks that absorbs impacts on pedestrians' feet. [Structure] The sidewalk soft flooring 10 has a thickness of 10 to 50 m.
m, a rectangular concrete floor plate main body 1 having a side of 100 to 500 mm, and an adhesive 5
And a joint filler member 3 such as a styrene foam rope that closes joints 6 in the gaps between the floor plate bodies 1 and 1 that are laid side by side. , Which are laid on the concrete foundation 11.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a soft footboard for sidewalks that reduces the burden on pedestrians by providing elasticity to the sidewalks and prevents injuries.

[0002]

[Prior art]

 In recent years, in response to the recycling campaign to reuse waste materials, rubber waste such as old tires is used to recycle it into a plate-like rubber block with elasticity and lay it on the sidewalk to increase the elasticity of the sidewalk. Many municipalities have developed pedestrian-friendly soft sidewalks that reduce the burden on pedestrians by giving them a foot and avoiding injury when falling.

[0003]

[Problems to be solved by the invention]

 However, the rubber block used for the conventional soft sidewalk having elasticity has a problem in durability. That is, the rubber block is originally obtained by sintering a rubber material crushed into a chip shape together with a small amount of aggregate such as cement and sand. On a sidewalk that is simply laid on foundation concrete, the chip-shaped rubber material that was fixed as a block gradually collapses and breaks down. Also, the partial repair is not easy.

[0004] Furthermore, the conventional soft sidewalk made of a rubber material is more expensive than the conventional concrete sidewalk or sidewalk on which tiles are laid, and is used only for a part of the sidewalk near a signal or the like. It is not at present.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a soft pedestal for a sidewalk which can be laid easily and at low cost and has excellent durability.

[0006]

[Means for Solving the Problems]

 In order to solve the above-described problems, the present invention provides: (1) a rectangular floor plate main body having a thickness of 10 to 50 mm and a side of 100 to 500 mm, and a thickness of 3 to 20 mm disposed on the bottom side of the floor plate main body. A soft footboard for sidewalks, comprising: a plate-like elastic member of the above type; (2) In particular, there is provided the soft footboard according to (1), wherein the plate-like elastic member is made of an elastomer having a rubber hardness of 10 to 60 in Shore hardness.

[0007]

[Embodiment of the invention]

 The sidewalk soft floorboard according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a configuration diagram of a soft sidewalk board for a sidewalk according to the present invention, and FIG. 2 is a diagram showing a cross-sectional structure of the soft sidewalk board for a sidewalk according to the present invention laid under concrete. FIG. 3 is a perspective view illustrating the state of the laying work.

In FIG. 1 or FIG. 2, a soft footboard 10 for a sidewalk has a rectangular (square, hexagonal, octagonal, etc.) floorboard body 1 having a thickness Z = 10 to 50 mm and a side X = Y = 100 to 500 mm. A plate-like elastic member 7 having a thickness t = 3 to 20 mm disposed on the bottom surface side 2 of the floor board body 1 and a joint filling member for closing a joint 6 in a gap between the floor boards 1 and 1 arranged side by side. 3 and is laid uniformly on the ground concrete 11 which has been finished smoothly and dried sufficiently.

The floor board body 1 is a molded body made of concrete, ceramic, stone, or hard synthetic resin, and a conventional sidewalk floor board can be used as it is. Generally, a square concrete slab having a thickness of 30 mm and a side of 300 mm will be preferable in terms of handling and cost. It is important that the sole plate body 1 itself be made of a hard and durable material. In addition, the above-mentioned size range actually indicates a size that is permissible in terms of cost and handling in laying work and repair work.

As the plate-like elastic member 7, butyl rubber (rubber obtained by copolymerizing several percent of isoprene with isobutylene), silicone rubber (methyl group, phenyl group, vinyl group Rubber-like elastic bodies in which linear polymers having organic substituents such as are cross-linked to each other), natural rubber, foamed plastics, and elastomers are suitable.

In particular, regarding the above-mentioned elastomers, ultra-soft elastomers having low rebound resilience, large shock absorption, and excellent elastic durability have been developed due to recent technological advances in polymer chemistry. Is the most suitable elastic member for the sidewalk soft soleboard at present, from the viewpoint of sustainability of elasticity, assuming that it is used throughout the year in severe environments for a long time. The Shore hardness is a number proportional to the height at which the hammer jumps up again when the hammer with a substantially spherical diamond attached to its tip is dropped vertically from a certain height (for example, 10 inches) onto the sample surface. The height of the jump is 6.5 inches and the height is expressed as a proportional value with 100 as the height.) Is the shore hardness (shore-A) expressed as rubber hardness, and 60 to 90 for general elastomers. However, the elastomer used for the plate-like elastic member 7 used in the present invention is an ultra-low hardness elastomer of 10 to 60. The ratio is 40 to 90 for natural rubber and other synthetic resin rubbers, and the ultra-low hardness elastomer has excellent properties of shock absorption, vibration proofing and sound proofing.

At present, the above-described ultra-low hardness elastomer is expensive, but as shown in FIG. If it is attached, it will be cheaper than conventional rubber blocks. The range of the thickness t = 3 to 20 mm of the plate-like elastic member 7 is an allowable range suitable for a sidewalk for elastically moving up and down to give a pedestrian a soft feeling without a sense of discomfort. . If the thickness t is less than 3 mm, there is no soft feeling and the effectiveness is poor. Conversely, if the thickness t exceeds 20 mm, the feeling becomes too fluffy and it is rather difficult to walk with an unstable feeling.

Next, as the joint filling member 3 that fills the joint 6, a general caulking material may be used, but the cost, the construction efficiency, and the individual laid plate main bodies 1 laid independently can be moved up and down independently. As shown in the perspective view showing the construction state in FIG. 3, a flexible plastic foam having a round bar shape (rope shape) with a diameter slightly larger than the joint width is used. For example, if the joint width is 6 mm, a styrofoam rope having a diameter of 8 mm is used as the joint filling member 3. At this time, the joint filling member 3 is pushed into the back of the joint 6 so as to reach the bottom of the joint 6, and the gap between the foundation concrete 11 and the floor board main body 1 (the plate-like elastic member 7 is attached to the bottom surface 2 of the floor board body 1). If it is partially installed on the side, a gap will inevitably occur.) From the outside world. Then, the groove of the joint which is left above is filled with the fine sand 9. Since the fine sand 9 is blocked by the joint filling member 3, it does not enter the bottom surface 2 of the floor board body 1.

In the event that repair is required due to the above configuration, each sole plate body 1 can be easily removed and replaced, and repair of joints becomes easy.

In the soft footboard 10 for a sidewalk of the present invention having the above-described structure, the footboard body 1 itself is made of a rigid material, but is elastically movable up and down by several millimeters by the plate-like elastic member 7. Can absorb the impact of the pedestrian and provide a soft pedestrian-friendly sidewalk. In addition, it has the same durability as a general sidewalk, and repair work is easy.

[0017]

[Effect of the invention]

 The sidewalk soft floorboard according to the present invention has the following effects due to the above configuration.

(1) The impact on the foot of a pedestrian is reduced, and the efficiency of laying a soft sidewalk that is gentle to a child or the elderly with less risk of a fracture or the like even when the vehicle falls down is improved.

(2) Excellent durability and easy repair work.

[0020]

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a sidewalk soft floorboard according to the present invention;

FIG. 2 is a diagram showing a cross-sectional structure of the sidewalk soft flooring board according to the present invention laid on a concrete foundation.

FIG. 3 is a perspective view illustrating a state of laying work of the sidewalk soft floorboard according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor body 2 Bottom surface 3 Joint filling member 5 Adhesive 6 Joint 7 Plate elastic member 9 Fine sand 10 Sidewalk soft floor plate 11 Concrete foundation

Claims (2)

[Utility model registration claims] 1. A thickness of 10 to 50 mm and a side of 100 to 50
A rectangular floorboard body of 0 mm, a plate-like elastic member having a thickness of 3 to 20 mm disposed on the bottom surface side of the floorboard body, and a joint filling member for closing a joint of a gap between the floorboard bodies laid side by side; A soft footboard for sidewalks, comprising: 2. The plate-like elastic member has a Shore hardness of 10-6.
The sidewalk soft soleplate according to claim 1, comprising an elastomer having a rubber hardness of 0.