JPS6239564Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to the structure of an electronic mat used for automatic doors.

The electronic mat is used as a passerby detection device for automatic doors.As shown in Fig. 1, the detection device (electronic mat) 1 is buried under the floor near the bottom of the automatic doors 2 and 3, and the oscillator A control circuit 4 including a circuit and a switch circuit is arranged in a lintel 6 at the top of the mullion 5. And the detection device 1
and the control circuit 4 are connected by a signal transmission line 7, and the control circuit 4 is operated according to the signal from the detection device 1.
This controls the opening and closing of the automatic doors 2 and 3. The structure of the detection device 1 is as shown in FIG. A protruding piece 14 is provided along the line to prevent leakage of the detection radiated radio wave. There is no particular problem with the detection device 1 having such a structure when it is buried in the ground with no limit to the depth as shown in FIG.
Recently, it has become particularly thin, causing problems in the construction work for burying electronic mats. That is, FIG. 4 schematically shows how the electronic mat 1 is buried in the slab 21, and reinforcing bars 22 are installed in parallel inside the slab 21 made of concrete, etc., and the upper part of the reinforcing bars 22 and the floor are The electronic mat 1 is embedded between the surface 23 and the surface 23. However, slab 21
Since the thickness D ₁ of the electronic mat 1 has become extremely thin as a recent architectural trend, the depth D ₂ from the floor surface 23 for burying the electronic mat 1 must also be made shallow. However, the electronic mat 1
There is a limit to how thin the thickness _D5 can be because the mat 24, etc. placed on the mat 24, etc., must have such strength that it will not crack or break even if a person stands on it and the pressure is applied. In addition, the depth D ₃ of the protrusion piece 14 should be shallower in order to prevent radio wave leakage, but there is a limit to reducing the height D ₄ of the protrusion piece 14 due to the problem of cracking mentioned above. sensing plate 12
The depth (D ₃ +D ₄ ) should also be shallower in order to increase sensitivity, but there is a problem similar to the above that makes it impossible to make it too shallow.

This idea was made to solve the above-mentioned problems, and the thickness of the electronic mat is reduced, and the structure is strong against pressure and the like.

This idea will be explained below.

As shown in FIGS. 5 and 6, this invention is an electronic mat for automatic doors in which a detection circuit assembly 30 containing a detection circuit for automatic doors is sandwiched between two sensing plates 31 and 32. 31, 32 and the detection circuit structure 30, a plurality of circular holes 33 are arranged in a row, and the holes 33 are filled with a fixed substance such as mortar or concrete, and the sensing plates 31 and 32 can be covered. This is how it was done. Thus, the holes in the sensing plates 31 and 32 are slightly larger than the holes in the detection circuit assembly 30, and are concentric circles, so that they can be easily filled with stuck substances from above and below. in this way,
By providing a large number of through-holes in the electronic mat and pouring adhered substances into these holes to fill and enclose them, the strength of the electronic mat against external pressure can be increased due to the columnar support effect of the adhered substances, so that the thickness of the electronic mat can be reduced. The thickness can be made as thin as possible. Therefore, according to the electronic mat of this invention, it is possible to easily bury it even in a place where the depth is limited, such as a slab of a building.

In addition, although the above-mentioned Example explained the case where circular holes were made, it may be made into arbitrary shapes, such as a square or a triangle, and the number of holes is also arbitrary. Further, a protruding piece may be provided on the upper surface of the sensing plate 31 to prevent leakage of radiated radio waves, and the position of the hole may be arbitrarily selected.

On the other hand, FIG. 7 is a diagram showing the arrangement of a conventional rubber mat switch 40. In order to reinforce the strength of the rubber mat switch 40, a decorative plate is placed on the top surface of the rubber mat switch 40.
1 is installed. However, according to the electronic mat of this invention, it is possible to use the installation hole of the rubber mat switch as it is and to securely mount it with mortar 50 as shown in FIG. 8, which is convenient. In this case, in order to prevent the mortar 50 from breaking, etc., the electronic mat may be covered with a slab or the like.

[Brief explanation of the drawing]

Figure 1 is a schematic explanatory diagram of an automatic door, Figure 2 is a structural perspective view of a conventional electronic mat for automatic doors, Figure 3 is a schematic structural diagram of a building, and Figure 4 is a structure in which an electronic mat is installed in a building. Figure 5 is a perspective view showing one embodiment of this invention, and Figure 6 is its A-
A sectional view of the structure at A', FIG. 7 is a diagram showing the arrangement of a conventional rubber mat switch, and FIG. 8 is a diagram showing an application example of this invention. 1... Detection device (electronic mat), 2, 3... Automatic door, 4... Control circuit, 5... Mullust, 6... Mume (lintel), 7... Signal transmission line, 20... Building , 21...Slab, 22...Rebar, 1
1, 30...detection circuit structure, 12, 13, 31,
32... Sensing plate, 33... Hole.

Claims (1)

[Scope of utility model registration request] In an electronic mat for an automatic door comprising a detection circuit structure for an automatic door held between two sensing plates, a plurality of circular or rectangular holes passing through each of the detection plates and the detection circuit structure for an automatic door are provided, An electronic mat for an automatic door, characterized in that each of the holes is filled with a fixed substance such as mortar, and the sensing plate is covered.