JPS646867Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a line changing device for an artificial turf field.More specifically, when playing various sports on a multi-purpose artificial turf field, it is possible to easily draw lines for each competition, This invention relates to a line exchange device for artificial lawn grounds that can be removed.

In recent years, the development of artificial turf has progressed, and it has come to be widely used for household balconies, indoor and outdoor entertainment areas, and various sports grounds.

In particular, compared to a natural grass field, it is easier to manage and maintain, it is always green, the competition can continue even with a little rain, and even if there is a lot of rain, the competition can be resumed immediately after the rain stops by using water absorbing trucks. There are many advantages such as being able to However, because the initial equipment cost is high and the land area of Japan is small, it is common for various sports to be played on one ground. Artificial turf varies depending on its structure, surface pile yarn material, and adhesive material used to prevent piles from falling out, but if you use a durable one, you can play baseball, rugby, and soccer games on the same field. , hockey, American football, and many other uses. Therefore, it is necessary to draw or remove lines necessary for various sports.

The lines of the conventional artificial grass ground were developed in 1983.
As in No. 125332, a method of permanently installing white artificial grass as a line, or as in Japanese Patent Application Laid-Open No. 53-5233, an aqueous solution of white diatomaceous earth and a fixing agent such as glycerin is placed on the green artificial lawn. A method of fixing is known.

However, since the former method involves adhesively fixing various sports lines, it has the fatal disadvantage of causing confusion and other inconveniences during competitions. On the other hand, the latter method has the advantage of being able to draw the necessary lines in the necessary places, but it requires measurements to draw the lines and a long time to draw the lines. However, there are drawbacks such as the need for a large amount of high-pressure water and the need for a large water absorption truck to drain the water, which greatly hinders the use of artificial turf fields.

The purpose of the present invention is to solve these problems at once, and to provide a line exchange device for an artificial grass field that can easily and reliably replace the line artificial grass with a green artificial grass in a short time. There is a particular thing.

The object of the present invention is to provide a line changing device which is installed in a buried manner in a part of an artificial lawn ground where lines are to be drawn, and which is held at a predetermined level and has an endless belt rotatably provided. This is achieved by comprising artificial grass of different hues attached to the surface of the belt.

The present invention will be described in detail below with reference to FIGS. 1 to 3. FIG. 1 is a front view showing the general shape of an artificial lawn used in the present invention, FIG. 2 is a schematic side view showing an example of the invention, and FIG. 3 is a partially enlarged view of FIG. 2. The line exchange device 9 of the present invention is installed in a groove (not shown) of a predetermined width and a predetermined depth that is dug along the part of the artificial lawn ground where the white line is to be drawn. A pulley 6 rotatably supported at a predetermined position by a support member (not shown) at a predetermined interval, a timing belt 5 of a predetermined width and a predetermined length wrapped around the pulley 6, and the timing belt. A green artificial lawn 10 and a white artificial lawn 11, each of which is adhesively fixed to a 1/2 length portion of the circumferential surface of 5, and each pulley 6 on the lower surface of the upper timing belt are held at a predetermined level by a supporting means (not shown) at a predetermined position. A metal plate 8 for supporting the timing belt is arranged to hold the timing belt.
For example, by driving one of the pulleys 6 6' by a motor 7 or the like, the positions of the green artificial lawn 10 and the white artificial lawn 11 on the circumferential surface of the belt can be easily switched. Of course, it is also possible to switch manually instead of using the electric method.

The width and length of the upper surface of the timing belt 5 are made to be the same as the width and length of the line, and it is important that the upper surface of the artificial lawn is formed to be the same height as the ground surface when the device is installed.
It is preferable that the width of the groove provided in the area where the white line is to be drawn is approximately 1 cm wider than the width of the timing belt. If this width is less than 1 cm, it is undesirable because the frictional resistance will be large and an additional load will be applied to the motor.On the other hand, if it is wider than 1 cm, problems such as the athlete's spikes may get caught, which is undesirable.

The support metal plate 8 may bend due to the weight of the timing belt and the artificial grass, causing a difference between the height of the ground surface and the height of the artificial grass at the top surface of the timing belt, or may bend due to the weight of the athlete, etc. It is important to appropriately design the installation position, plate thickness, support structure, etc. to prevent this from occurring.

The white artificial lawn 11 and the green artificial lawn 10 are completely the same in structure, composition, etc., except for their different colors.
That is, as shown in FIG. 1, the artificial lawn 10 or 11 consists of a pile 1, a base fabric 2, and a backing material 3 for preventing the pile from coming off.
is fixed to the timing belt using an adhesive such as urethane resin or epoxy resin.

The surface pile yarn 1 is usually a flat yarn made of polyamide, polyester, polyolefin, polyvinylidene chloride, or polyvinyl chloride resin. Polyamide-based flat yarn is preferable from the viewpoint of durability, weather resistance, etc. The base fabric 2 is preferably formed of polyester fabric from the viewpoint of strength and dimensional stability of the artificial lawn.

Since the present invention is constructed as described above, the white line can be automatically drawn by simply rotating the timing belt of the line changer using an electric method or the like.
Since this can be canceled, lines can be relined with high efficiency, and this greatly contributes to improving the efficiency of use of multi-purpose artificial turf fields, etc.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the general shape of an artificial lawn used in the present invention, FIG. 2 is a schematic side view showing an example of the invention, and FIG. 3 is a partially enlarged view of FIG. 2. 1: pile yarn, 2: base fabric, 3: backing material,
5: Timing belt, 6,6': Pulley,
8: Metal plate, 9: Line exchange device, 10: Green artificial lawn, 11: White artificial lawn.

Claims (1)

[Claims for Utility Model Registration] (1) A line exchange device installed buried in the line-corresponding part of an artificial lawn ground, which device is maintained at a predetermined level and is provided with an endless belt rotatably provided. and artificial lawns of mutually different hues attached to the surface of the endless belt. (2) Utility model registration claim 1, in which white artificial grass is installed on 1/2 of the surface of the endless belt in the longitudinal direction, and green artificial grass is installed on the remaining surface area.
Line changing device for artificial lawns as described in Section 1.