JP2500103Y2 - Termite sensor - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION This invention relates to a termite sensor for detecting the appearance of termites.

[0002]

2. Description of the Related Art Generally, termite pollution has a wide range from organic substances such as crops, papers and cloths to inorganic substances such as concrete, in addition to the damage of wood such as the foundation and pillars of houses. As a measure for exterminating termites, a habitat survey is carried out in advance to confirm whether termites inhabit a prescribed area, and based on that, prescribed extermination work such as chemical spraying is performed. Conventionally, this type of termite infestation survey device (sensor), for example, acoustically captures the biting sound of wood, which is the activity of termites, compares the frequency with the preset termite frequency, and based on the output An acoustic termite sensor has been proposed that issues an alarm with an alarm device or the like.

[0003]

[Problems to be Solved by the Invention] However, the configuration of this acoustic termite sensor necessitates a device with extremely high accuracy, so that the product is inevitably expensive and is not suitable as a simple termite sensor. It was

It should be noted that, as termites preferring moisture, they enter the inside while constructing an ant path for food substances such as wood, and cover the ant path with ant soil by loading it at the entrance. It has a habit of being isolated. Further, recently, it has been found that styrofoam (soft polystyrene) used as a building material prefers to eat like wood.

In view of the above situation, the present invention solves the above problems by using styrofoam as a main material, which is preferred by termites, and combining the discharge of the ant soil accompanying the construction of the ant road and the light-shielding switch action of the photoelectric switch. The purpose of the present invention is to provide a termite sensor.

[0006]

SUMMARY OF THE INVENTION According to the present invention , a plurality of supporting rods are provided with a hollow columnar block having a predetermined length, which is formed by mixing styrofoam particles, wood chips, and starch that serves as an adhesive.
There is a small amount of space between the fixed plates that stand on the
At least one part of the surrounding is in contact with the ground
And the hollow part of this hollow columnar block.
A photoelectric switch is formed at the position where the end faces the fixed plate.
Install a light emitter and a light receiver to prevent termites from entering
The hollow part is filled with the formation of ant soil by
It is to do it.

[0007]

[Function] As described above, a hollow columnar block, which is mainly made of Styrofoam that the termite prefers to eat (gnaws), is solidified with wood chips and starch. Since the photoelectric switch is provided on both fixing plates so as to face the hollow portion of the columnar block, if termites appear and come in and bite into the styrofoam columnar block while building a dovetail, the entrance portion and columnar block On both open ends of the hollow part, etc., styrofoamed styrofoam material is piled up and covered as ant soil. For this reason, the ant soil blocks the light beam from the light projecting element of the photoelectric switch, the photoelectric switch is activated, the intrusion of termites is detected, and a separate alarm device connected to the photoelectric switch is activated. Therefore, it can be seen that termites are infested and inhabited.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings of the embodiments.

The figure shows an embodiment in which a transmission type photoelectric switch with a built-in amplifier is used, in which 1 is a mixture of styrofoam particles 2 having a diameter of about 3 to 6 mm, wood chips 3 having a woody smell, and starch 4 serving as an adhesive. A hollow (cylindrical) columnar block having a so-called rising shape formed between the fixing plates 7 and 8 facing each other at a constant interval with the supporting rod 6 serving as a sensor body integrally forming the columnar block 1 having a predetermined length. And the lower surface 1a of the columnar block 1 is interposed at least at a position where it directly contacts the ground a during setting, and both open ends 5 of the hollow portion 5 which is the central portion of the columnar block 1 are disposed.
The light projecting element 10a of the light projecting device 10 of the transmissive photoelectric switch 9 and the light receiving element 11a of the light receiving device 11 are attached to face the fixing plates 7 and 8 facing the a and 5b, respectively, and the termite sensor 12 is used as the whole structure. To do. 13 is the both fixing plates 7 and 8
With a pair of positioning dowels that project to the bottom of each,
The lower portion of the columnar block 1 to be inserted and set from above is placed on the positioning dowels 13 and 13, and at this time, the light projecting element 10a and the light receiving element 11a facing the center of the hollow portion 5 of the columnar block 1 are positioned. , The light beam irradiating b
Is configured to be transmitted. In the figure, 14 is an alarm device separately connected via a lead wire 15 led out from the photoelectric switch 9.

Explaining this action, first, when molding the hollow columnar block 1 made of expanded polystyrene, wood chips 3 and an adhesive are used in a group of unexpanded polystyrene particles 2'having a small spherical shape having a diameter of, for example, 1 to 2 mm. Starch 4
Is charged into a predetermined mold (not shown) and heated to give foaming to the unexpanded polystyrene particles 2 '(for example, steam heating at 100 ° C.), and the unexpanded polystyrene particles 2'are mixed. To 3 to 6 mm of expanded polystyrene particles 2, and then the expanded polystyrene particles 2 are additionally heated (for example, steam heating at 120 ° C.) to slightly melt the expanded polystyrene surface so that the wood chips 3 and the starch 4 are sprinkled and steam. So-called hollow columnar block 1 which is solidified by the adhesive action of starch 4 which is hydrated by heating
To form.

Here, in constructing the termite sensor 12, a hollow columnar block 1 made of expanded polystyrene is used.
Is inserted into the support rod 6 extending in four directions between the two fixing plates 7 and 8 serving as the sensor body, for example, from the gap between the two upper support rods 6 and 6, and the positioning dowel 1 also serves as the lower support.
Both ends may be placed on 3, 13. That is, the front and rear of the hollow columnar block 1 are restricted by the fixing plates 7 and 8, and the left and right are positioned to the lower front, rear, left, and right (four directions), and positioning dowels 13, 13 are provided.
Therefore, the open ends 5a and 5b of the hollow portion 5 of the columnar block 1 easily face the light projecting element 10a and the light receiving element 11a of the fixing plates 7 and 8, respectively.

When the termite sensor 12 is used, at least the lower surface portion 1a of the styrofoam hollow columnar block 1 is placed at a place (on the ground) where termites are likely to appear.
Place it so that it touches directly. Thereafter, similar to the known photoelectric switch mechanism, the transmission type photoelectric switch 9 is energized in a predetermined manner to emit a light beam b from the light projecting element 10a of the LED and receive the light beam with the opposite light receiving element 11a.

Here, if termites appear and disappear in the set termite sensor 12, the termites are mainly bitten by the styrofoam column block 1 that eats favorably and bite out, and the dovetail path c is applied to the column block 1. As it builds up, it goes into the interior, and due to the habit of termites, the ant soil d produced by galling is piled up (covered) and covered at the entrance of the ant road c. In this case, since the horizontally long hollow portion 5 formed at the center of the columnar block 1 also corresponds to a kind of dovetail path c, termites are arranged at both ends of this hollow portion 5 to partition the outside from the outside. That is, since the ant soil d is piled up at both ends of the hollow portion 5 to cover the hollow portion 5, the light beam b emitted from the light projecting element 10a is blocked by the ant soil d and does not reach the light receiving element 11a (see FIG. 6), the transmission type photoelectric switch 9 is turned on, and the output thereof is input to an alarm device 14 arranged separately to issue an alarm of termite infestation or the like.

By the way, the size of the embodiment of the styrofoam hollow columnar block is as follows: the inner diameter of the hollow portion is 5 mm, the outer circumference of the block is 30 mm, and the block length is 1
It is a cylindrical block-like block having a length of 50 to 300 mm.

[0015]

As described above, the termite sensor of the present invention interposes a hollow columnar block mainly composed of styrofoam that a termite prefers to eat between fixed plates facing each other, and has a photoelectric switch on both fixed plates. Since it has a photoelectric switch mechanism, the termite bites into the columnar block and ants soil (Styrofoam, etc.) habitually fills the entry port and the open end of the hollow part. The switch mechanism is automatically turned off, and the infestation of termites can be detected easily and reliably. In this case, since the columnar block is arranged so that a part of the columnar block is in direct contact with the ground, attraction of termites and penetration by bites are also good. Also, the present invention has a practical effect that it is easy to manufacture because it has a simple structure, can be provided at low cost, and has no malfunction.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a termite sensor of the present invention.

FIG. 2 is a central longitudinal side view of the termite sensor.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a perspective view of a termite sensor body.

FIG. 5 is a partially cutaway side view of a styrofoam hollow columnar block.

FIG. 6 is an explanatory diagram in which termites bite into and discharge ant soil to operate a photoelectric switch.

[Explanation of symbols]

 1 Styrofoam hollow columnar block 2 Styrofoam grains 3 Wood chips 4 Starch 5 Hollow part 7 Fixing plate 8 Fixing plate 9 Photoelectric switch 10 Light projector 10a Light projecting element 11 Light receiving device 11a Light receiving device

Claims (1)

(57) [Scope of utility model registration request] 1. A ground type columnar block having a predetermined length formed by mixing styrofoam particles, wood chips, and starch that serves as an adhesive , standing upright and facing each other with a plurality of supporting rods.
At least a part of the surrounding is on the ground between the fixed plates placed on top
This hollow is used as the interposition of horizontal holding so that it touches.
Opposing the fixed plate facing both ends of the hollow portion of the columnar block
The transmitter and the receiver that make up the photoelectric switch are
Installed, the hollow part is created by the formation of ant soil due to the invasion of termites.
A termite sensor that is buried and switches by blocking the light beam .