JP3940418B2 - Underfloor diagnostic instrument - Google Patents

Description

  The present invention relates to an underfloor diagnostic instrument, and more particularly to an underfloor diagnostic instrument for diagnosing the underfloor of a detached house.

  In detached houses built with timber, biological degradation of timber that occurs mainly under the floor, such as damage caused by termites and decay by timber decay fungi, becomes a problem. Measures that have been taken against such biological degradation can be divided into the following two cases.

1) Measures to be taken in newly built houses When a new house is built, there is a method of spraying or applying an ant / preservative to the soil and members around the floor or injecting an ant / preservative to the main structural members such as the base is there. There is also a method of isolating the underfloor space and surrounding soil with ant-proof and moisture-proof sheets. Similar methods include a method in which the entire foundation is made of reinforced concrete (so-called solid foundation), and a method in which concrete is poured into the underfloor soil (so-called soil-filled concrete). In addition, there is a method of installing a humidity control agent or a ventilation fan under the floor.

2) Measures to be taken on existing houses There are methods of spraying or applying ant / preservatives to the soil and members around the floor, or injecting holes. Similarly, there is a method of installing a humidity control agent or a ventilation fan under the floor.

  However, these methods have the following problems, and it is very difficult to prevent biological degradation semipermanently.

  1) The effects of ant and antiseptics decrease with time. In particular, in recent years, it has been demanded to use a less toxic drug in a limited manner from the viewpoint of sick house measures and environmental measures, so that the period of drug efficacy tends to be shorter.

  2) Precautionary measures may be insufficient or inappropriate. This often occurs due to the fact that construction must be done with a limited budget and time.

  3) Preventive measures become invalid due to typhoons, heavy rain, earthquakes, land subsidence, etc.

  Based on the above circumstances, it is the best way to economically extend the life of a house by detecting it early and treating it at an early stage while regularly monitoring it.

  However, biodeterioration countermeasures that have been seen in the field of maintenance and management of houses so far have dealt with the manifestation of termite damage and decay that have been manifested with chemicals, repairing the degraded parts, There was no choice but to carry out remodeling. The reality is that maintenance technologies and services based on early detection and early treatment through regular inspections have hardly been developed.

  Nevertheless, there have been a number of devices that have been developed and put to practical use so far to monitor and detect biodegradation of houses.

  For example, as a method for detecting termites, a sensor that detects acoustic emission, which is an elastic wave in the weak ultrasonic region that occurs when termites eat wood, reflection of ultrasonic waves, propagation time and attenuation are used. Sensors that detect cavities inside wood caused by decay, radar that detects defects inside wood using electromagnetic waves, small devices that measure the moisture content of wood by measuring electrical resistance and capacitance, infrared rays and electromagnetic waves Sensors for detecting animals such as termites, devices for exploring the density distribution inside wood and wooden structures using X-rays, impacting steel pins with impact, and evaluating internal degradation at that depth Equipment, equipment that evaluates internal degradation by perforation resistance when wood is perforated with a thin rotating cone, wood-rotting fungi are detected by antigen-antibody reaction, and genetic technology is used There is a method or to identify the species.

  These are classified into methods for detecting insects and fungi that cause biological degradation, and methods for evaluating environmental parameters that induce changes in strength of members caused by biological degradation and biological degradation.

  All of them were developed and put into practical use on the assumption that they will be used on the site of maintenance management, but they have advantages and disadvantages in terms of performance, convenience, durability, price, etc., and are widely used as general-purpose instruments and devices. Only a few experts use it.

  There are few development examples of general-purpose equipment for monitoring biological deterioration in general households. As a method of disinfecting while monitoring the activity of termites around the house, a small plastic cylinder (station) with a hole inserted with a piece of wood (bait) is buried in the soil around the house, and the termites become cylinders from the surrounding soil. A method has been developed in which the intrusion is regularly monitored, and when a certain amount of termites have gathered at the station, the wood chips are replaced with a pesticide-containing one. This method involves monitoring the distribution of termites around the house, but it does not detect termites purely, and the management of the station is left to the hands of specialists. Is not something that is used as a termite monitoring tool.

  As for wood decay, detection kits using antigen-antibody reaction have been developed as a method for simple detection and evaluation in the field, but there are problems in terms of operation and price.

Further, JP 2001-169708 A (Patent Document 1) applies a pest trapping adhesive to the bottom plate surface, sticks a termite detection wood piece to the back of the bottom plate, and adheres a decaying investigation piece to the side surface. A diagnostic box is disclosed. By installing this box under the floor and regularly inspecting it, it is possible to diagnose and evaluate the state of deterioration under the floor from termite damage caused by wood chips and wood decay caused by investigation pieces. This box is suitable for diagnosing under-floor deterioration easily, but it is difficult for ordinary people to use because it is necessary for a person to dive under the floor from an inspection port or the like for installation or inspection.
JP 2001-169708 A JP 2003-144029 A JP 11-89500 A JP 2002-330684 A JP-A-10-56935

  An object of the present invention is to provide an underfloor diagnostic instrument that can monitor underfloor deterioration without entering the underfloor.

Means for Solving the Problems and Effects of the Invention

The underfloor diagnostic instrument according to the present invention includes a support arm and a probe. Support arms, to lie on the lower surface of the floor vent extends horizontally. The probe hangs down from one side of the support arm so that the tip of the probe comes into contact with the soil while hitting the inner wall surface of the underfloor vent , and detects biological deterioration of the wood. The support arm and the probe may be formed of individual members, but may be integrally formed of a single member.

  According to the present invention, the underfloor diagnostic instrument can be inserted and attached through the underfloor ventilation port, and the underfloor deterioration can be monitored.

  Preferably, the probe is formed of a material mainly made of wood.

  In this case, since the probe is made of a material mainly made of wood like the house, the deterioration of the house can be accurately monitored. However, the material used for the probe does not have to be the same tree species and the same individual as the wood used in the house.

  Preferably, the probe has a plurality of cuts formed at predetermined intervals and in a transverse direction. The transverse direction here does not need to be perpendicular to the longitudinal direction of the probe, but may be oblique.

  In this case, even if the height of the fabric foundation below the underfloor vent is unknown, the length of the probe can be adjusted as appropriate by folding the tip of the probe at an appropriate cut. As a result, the underfloor diagnostic instrument can be attached with the tip of the probe lightly touching or slightly inserted into the underfloor soil.

  Preferably, the cut is formed obliquely with respect to the horizontal direction.

  In this case, when the probe is broken at the cut, the tip has an acute angle, and is easily inserted into the underfloor soil.

  Preferably, the probe includes a tube and a wooden bar. The upper end portion of the bar is inserted into the tube.

  In this case, even if the gap between the underfloor ventilation holes is small, the probe is thin, so that an underfloor diagnostic instrument can be inserted and attached.

  Preferably, the support arm comprises a tube. The underfloor diagnostic instrument further includes a string. The string is inserted through the tube and coupled to the probe. As the string, for example, a thread (preferably a twisted thread such as a kite thread or a nylon thread such as a fishing line is preferable), a steel wire such as a rope, a chain, or a piano wire can be used.

  In this case, even if the gap between the underfloor ventilation holes is a small hole, the underfloor diagnostic instrument can be inserted and attached if it is slightly larger than the diameter of the probe or the support tube.

  Preferably, the probe includes a tube and a wooden bar. The upper end of the rod is inserted into the tube. The tube constituting the support arm has an end face that forms X degrees (0 <X <90) with respect to the transverse direction. The probe tube has an end face that forms 90-X degrees with respect to the transverse direction.

  In this case, when the string is pulled, the tube constituting the support arm and the probe tube are naturally joined at 90 degrees, so that the underfloor diagnostic instrument can be securely attached.

  Preferably, the underfloor diagnostic instrument further includes a latch member. The hook member is provided on the support arm and hooked to the underfloor ventilation port.

  In this case, since the hook member is hooked on the underfloor ventilation port, the underfloor diagnostic instrument can be prevented from falling to the inside of the cloth foundation.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

[First Embodiment]
Referring to FIGS. 1 (a) and 1 (b), an underfloor diagnostic instrument 10 according to the first embodiment of the present invention is configured by a generally L-shaped piece of wood. Specifically, the underfloor diagnostic instrument 10 includes a support arm 11 extending in the horizontal direction and a probe 12 for detecting biological deterioration. The probe 12 hangs from one end of the support arm 11. The support arm 11 and the probe 12 are made of wood and are each processed into a thin rectangle. Steps 13 are respectively formed at the ends of the support arm 11 and the probe 12 and bonded together with an adhesive or the like. The reason why the probe 12 is made of wood is to determine the deterioration state under the floor based on termite damage and decay that occur in the probe 12. In this example, the underfloor diagnostic instrument 10 is configured by two bonded wooden boards, but may be configured by a single wooden board processed into an L shape.

  The length L1 of the support arm 11 is 100 to 200 mm, preferably 165 mm, which is about the same as the general width of the fabric foundation. The length L2 of the probe 12 is 250 to 350 mm, preferably 300 mm, which is longer than the general height of the fabric foundation below the underfloor ventilation port. The width W of the support arm 11 and the probe 12 is about 15 to 25 mm, the thickness T is about 3 to 5 mm, and is sized to be inserted through a gap (slit) in the underfloor vent.

  As shown in an enlarged view in FIG. 2, a plurality of cuts 14 are formed in the lower portion of the probe 12 so that the tip of the probe 12 can be broken by hand and the length of the probe 12 can be adjusted appropriately. The cuts 14 are formed at a predetermined interval P and oblique to the horizontal direction. Specifically, the cut 14 is a groove having a rectangular cross section formed at an angle of 45 degrees at an interval of about 1 cm. The width w of the groove is about 1 mm and the depth d is about 0.5 mm. When the tip of the probe 12 is broken at the cut line 14, an acute angle is obtained, so that the probe 12 can be easily inserted into the soil under the floor.

  In this example, the cut 14 is formed only on one side of the probe 12, but may be formed on both sides. Moreover, the cross section of the cut | interruption 14 may be V-shaped etc., and the shape is not specifically limited. Further, the cut line 14 may be perforated at a predetermined interval instead of a groove to form a perforation line (cut line). In this example, the tip of the probe 12 is rectangular, but the triangular portion of the tip may be folded in advance at the bottom cut 14 and the tip may be sharpened from the beginning.

  As shown in an enlarged view in FIG. 3, the underfloor diagnostic instrument 10 further includes a hooking member 15 that is hooked on the underfloor ventilation opening. A flat rubber 16 is wound around the center of the support arm 11, and the hooking members 15 are attached to the flat rubber 16 on both sides of the support arm 11. The latch member 15 includes a rectangular base plate 151 and a hook 152 protruding from the base plate 151.

  Next, an underfloor diagnostic method using the underfloor diagnostic instrument 10 will be described with reference to FIG.

  In general, an underfloor vent 21 is formed in the fabric foundation 20 in order to improve the ventilation of the underfloor space. A slit having a width of about 10 mm is formed in the underfloor ventilation port 21 in the vertical direction. The height H of the fabric foundation 20 located below the underfloor ventilation port 21 is about 280 to 300 mm.

  In order to diagnose underfloor deterioration using the underfloor diagnostic instrument 10, first, the tip of the probe 12 is inserted into the slit of the underfloor ventilation port 21, and the support arm 11 is placed on the upper surface of the fabric foundation 20 (below the underfloor ventilation port 21. The underfloor diagnostic instrument 10 is attached by laying on the side surface) and touching the probe 12 lightly with the underfloor soil 22 or slightly inserting the probe 12 against the inner wall surface of the fabric foundation 20.

  Since the height H of the fabric base 20 is not known even when viewed from the outside, the length L2 of the probe 12 is initially increased, and the underfloor diagnostic instrument 10 is first attached. When the tip of the probe 12 comes into contact with the underfloor soil 22, the distance between the support arm 11 and the upper surface of the fabric foundation 20 is measured, and the tip of the probe 12 is broken at an appropriate cut 14 using the distance as a guide. Then, the length L2 of the probe 12 is adjusted.

  Since the latching member 15 is provided near the center of the support arm 11, the underfloor diagnostic instrument 10 does not fall inside the fabric foundation 20. Moreover, since the latching member 15 is stuck on the flat rubber 16, even if some impact force is applied, it is absorbed by the flat rubber 16 and the latching member 15 is not peeled off.

  After the installation of the underfloor diagnostic instrument 10, the underfloor diagnostic apparatus 10 is removed after elapse of a predetermined period, for example, after several months to one year. Then, the biological deterioration of the probe 12 of the removed underfloor diagnostic instrument 10 is examined. Specifically, the probe 12 is visually observed to determine whether termite damage, decay due to wood decay fungi, and mold are not observed. The determination may be made by the homeowner himself, but may be made by an expert in order to make a more accurate determination. In order to make an accurate and objective determination, it is preferable to prepare a sample such as a photograph or an illustration showing the state of food damage, decay, or mold in advance, and compare the sample with the actual state of the probe 12. In this way, the deterioration state can be evaluated in stages.

  Specifically, the decay of the underfloor member is determined based on the decaying fungi (mycelium or fruit body) attached to the probe 12. The mycelium of the decaying fungus is floating in the underfloor space and may adhere to the probe 12 and the underfloor member. In addition, it is considered that there is almost no difference between the probe 12 and the underfloor member with respect to the moisture necessary for the decay of germs and the decay of wood while growing the mycelium. Therefore, the deterioration state of the underfloor member can be evaluated by the decay generated in the probe 12. In order to suppress the generation of fungi other than wood-rotting fungi, the probe 12 may be preliminarily coated with a specific fungicide or the like, and only the wood-rotting fungi may be selectively detected.

  In addition to the above, the moisture content of the probe 12 may be measured. The moisture content of wood that causes termite damage and decay is evaluated by the weight of the probe 12. Although the wetness of the probe 12 may be determined visually or by palpation, the moisture content may be measured with a moisture meter. Alternatively, the weight of the underfloor diagnostic instrument 10 may be measured, and the moisture content may be calculated from the weight. Specifically, the weight before attaching the underfloor diagnostic instrument 10 is measured, and the weight after removing the underfloor diagnostic instrument 10 is measured. In order to reduce the measurement error of the moisture content, it is preferable to remove the irrelevant support arm 11 and measure the weight of the probe 12 alone.

  The most accurate measurement of moisture content is based on the absolutely dry method, in which the probe 12 is dried to a constant weight in a drying path, and the percentage of the weight difference before and after drying is evaluated as the moisture content. When the dry weight of the probe 12 is known in advance, the moisture content can be calculated from the weight at the time of inspection. Alternatively, measurement may be made with an electrical resistance type moisture sensor or the like.

  As described above, according to the first embodiment of the present invention, even the homeowner can diagnose and evaluate the deterioration state under the floor. Moreover, since the underfloor diagnostic instrument 10 has a structure that is lightly fixed to the underfloor ventilation port for a relatively long period of time, it can be easily removed for inspection, and can be reattached after the inspection.

  Moreover, since the probe 12 is installed along the inner wall surface of the fabric foundation 20, termites can be captured accurately. Most of the termite damage is caused by termites scooping up the inner wall surface of the fabric foundation 20 from the underfloor soil 22 and entering the house. In addition, when termites that inhabit the soil around the house encounter the cloth foundation 20 in the soil, they move near the ground surface along the cloth foundation 20, and thus it is possible to detect the termites in the surrounding soil.

[Second Embodiment]
Referring to FIG. 5, an underfloor diagnostic instrument 30 according to a second embodiment of the present invention includes a support tube 31 formed by bending a stainless steel tube into an L shape, an elongated wooden round bar 32, and a latch member. 33. The horizontal portion of the support tube 31 constitutes a support arm. The upper end portion of the round bar 32 is inserted into the vertical portion of the support tube 31. The vertical portion of the support tube 31 and the round bar 32 constitute a probe. In this example, the support tube 31 is made of stainless steel, but may be made of resin.

  The length L1 of the horizontal portion (support arm) of the support tube 31 is 100 to 200 mm, specifically 165 mm. The vertical portion of the round bar 32 and the support tube 31, that is, the probe length L2 is 250 to 350 mm, specifically 300 mm. The support tube 31 has an outer diameter of about 4 mm and an inner diameter of about 3.5 mm. The diameter of the round bar 32 is about 3 mm.

  As shown in FIG. 6 in an enlarged manner, a plurality of cut lines 34 are formed obliquely in the lower portion of the round bar 32 as in the first embodiment. However, in this example, since the cut 34 is formed in the thin round bar 32, it does not need to be formed diagonally. Further, in this example, the cut line 34 is formed on both side surfaces of the round bar, but may be formed only on one side surface.

  As shown in an enlarged view in FIG. 7, a hooking member 33 is rotatably inserted near the center of the horizontal portion of the support tube 31. The latch member 33 is made of an elastic material such as sponge or rubber, and cuts 35 are formed on both sides thereof.

  As shown in FIG. 8, the underfloor diagnostic instrument 30 according to the second embodiment is also inserted and attached through the underfloor ventilation port 21 in the same manner as in the first embodiment. At this time, the latching member 33 is first rotated to be in the vertical direction, and is pushed into the slit of the underfloor ventilation port 21 to position the underfloor diagnostic instrument 30, and then the latching member 33 is moved as shown in FIG. The underfloor diagnostic instrument 30 is hooked on the underfloor ventilation port 21 by turning 90 degrees and sandwiching the lattice 36 of the underfloor ventilator with the cuts 35 on both sides.

  According to the second embodiment, since the support tube 31 and the round bar 32 are thin with a circular cross section, the slit of the underfloor ventilation opening is small, for example, even if it is a rhombus lattice, the underfloor diagnostic instrument 30 is inserted, Can be attached.

  In this example, the cut 34 is formed in the round bar 32. Instead, the total length of the probe is adjusted by changing the amount (length) of the round bar 32 inserted into the vertical portion of the support tube 31. You may do it. In this case, after adjusting and determining the total length of the probe, if the end of the support tube 31 into which the round bar 32 is inserted is caulked, the round bar 32 enters and exits the support tube 31 and the total length of the probe changes. Can be prevented.

[Third Embodiment]
As shown in FIG. 10, a rod 40 may be used instead of the tube in the second embodiment, and the tip of the rod 40 bent into an L shape may be inserted into a wooden square bar 41. In addition, the front-end | tip of the square bar 41 is processed into the acute angle so that it may be easy to insert in soil.

[Fourth Embodiment]
As shown in FIGS. 11 to 13, in the fourth embodiment, the support tube 31 in the second embodiment is cut at a bent portion and separated into two, a horizontal tube 51 and a vertical tube 52, A string 53 is coupled to the upper end of the round bar 32, and the string 53 is inserted through a vertical pipe 52 and further inserted through a horizontal pipe 51.

  As shown in FIG. 12, the horizontal tube 51 has an end face 54 that forms approximately 45 degrees with respect to the transverse direction. The vertical tube 52 also has an end face 55 that forms approximately 45 degrees with respect to the transverse direction. As shown in FIG. 13, an O-shaped metal fitting 56 is screwed onto the upper end surface of the round bar 32, and a string 53 is tied to the O-shaped metal fitting 56. The string 53 is inserted into the vertical tube 52 and the horizontal tube 51, and the other end is connected to a ring 57 for retaining.

  In this example, since the horizontal pipe 51 and the vertical pipe 52 have the same diameter, the angles of the end faces 54 and 55 are preferably 45 degrees. However, when the diameters are different, for example, the angle of one end face is set to 30 degrees. The angle of the other end face may be 60 degrees. Further, although the string 53 is tied to the O-shaped metal fitting 56, a through hole may be formed in the upper part of the round bar 32, and the string 53 may be inserted and tied there. The string 53 may be fixed to the inner wall of the vertical tube 52 without being tied to the round bar 32, or may be fixed by being sandwiched between the vertical tube 52 and the round bar 32.

  In order to attach the underfloor diagnostic instrument 50 according to the fourth embodiment, as shown in FIG. 14, the round bar 32 and the vertical pipe 52 are inserted from the underfloor ventilation port 21 and faced downward along the inner wall surface of the fabric foundation 20. Hang on.

  After the horizontal pipe 51 is positioned horizontally with the end face 54 facing downward, when the string 53 is pulled, the end face 54 of the horizontal pipe 51 and the end face 55 of the vertical pipe 52 are cut at 45 degrees, respectively. 51 and the vertical tube 52 naturally join at a right angle.

  In this state, the latching member 33 is rotated 90 degrees to latch the horizontal pipe 51 on the underfloor ventilation port 21, and the pulled string 53 is inserted into a notch 58 formed at the end of the horizontal pipe 51 and fixed. .

  According to the fourth embodiment, since the overall shape is not fixed to the L shape as in the first to third embodiments, the underfloor diagnostic instrument 50 is inserted into the slit of the underfloor ventilation port. There is no need to rotate it, and the shape of the slit is hardly restricted. Moreover, when the string 53 is pulled, the horizontal pipe 51 and the vertical pipe 52 are naturally joined at a right angle, so that the state in which the underfloor diagnostic instrument 50 is attached is the same as in the third embodiment.

  Also in this example, instead of forming the cut 34 in the round bar 32, the total length of the probe may be adjusted by changing the amount of the round bar 32 inserted into the vertical tube 52. In this case, if the string 53 is pulled, the insertion amount of the round bar 32 increases, and as a result, the entire length of the probe can be shortened.

  In the above embodiment, wood is used for the probe. However, paper or cellulose fiber may be used instead. In short, it is only necessary to evaluate the underfloor deterioration of a house constructed of wood. Therefore, the probe is mainly made of wood. What is necessary is just to form with a material. Further, it is sufficient that at least the tip of the probe is made of wood, and the upper portion and the support arm of the probe are not necessarily made of wood.

  Moreover, although the said embodiment has comprised L shape, some protrusion part is additionally provided in the front-end | tip part of a support arm, As a result, you may comprise T shape, for example.

  Further, a probe obtained by bending a metal round bar (diameter of about 3 to 5 mm) into an L shape and attaching a wooden piece for monitoring to the tip may be used as the probe. A metal round bar is inserted into a piece of wood and processed so as to be in close contact with the piece of wood. Since AE (acoustic emission) waves caused by termite damage propagate from a piece of wood to a metal round bar, attaching an AE sensor to the other end of the round bar will stimulate termites without removing the underfloor diagnostic instrument. In addition, it is possible to detect the progression of termite damage. If a pipe is used instead of a metal round bar and the end is sealed with a rubber plug or the like, gas such as hydrogen generated from termites or wood decaying bacteria accumulates in the pipe. By sampling this and measuring with a gas sensor, it is possible to detect termite damage and wood decay.

  While the embodiments of the present invention have been described above, the above-described embodiments are merely examples for carrying out the present invention. Therefore, the present invention is not limited to the above-described embodiment, and can be implemented by appropriately modifying the above-described embodiment without departing from the spirit thereof.

(A) is a front view which shows the external appearance structure of the underfloor diagnostic instrument by the 1st Embodiment of this invention, (b) is a right view of (a). It is an expansion perspective view of the probe in the underfloor diagnostic instrument shown in FIG. It is an expansion perspective view of the latching member in the underfloor diagnostic instrument shown in FIG. It is a figure for demonstrating the attachment method of the underfloor diagnostic instrument shown in FIG. It is a front view which shows the external appearance structure of the underfloor diagnostic instrument by the 2nd Embodiment of this invention. It is an expansion perspective view of the probe in the underfloor diagnostic instrument shown in FIG. It is an expansion perspective view of the latching member in the underfloor diagnostic instrument shown in FIG. It is a figure for demonstrating the attachment method of the underfloor diagnostic instrument shown in FIG. It is a perspective view for demonstrating the method of latching the underfloor diagnostic instrument shown in FIG. It is a front view which shows the external appearance structure of the underfloor diagnostic instrument by the 3rd Embodiment of this invention. It is a front view which shows the external appearance structure of the underfloor diagnostic instrument by the 4th Embodiment of this invention. It is a perspective view of the underfloor diagnostic instrument shown in FIG. It is a partially fractured perspective view which shows the coupling | bond location of the string in the underfloor diagnostic instrument shown in FIG. It is a figure for demonstrating the attachment method of the underfloor diagnostic instrument shown in FIG.

Explanation of symbols

10, 30, 50 Underfloor diagnostic instrument 11 Support arm 12 Probe 14, 34 Cut 15, 33 Hanging member 20 Fabric foundation 21 Underfloor ventilation port 22 Underfloor soil 31 Support pipe 32 Round bar 51 Horizontal pipe 52 Vertical pipe 53 Strings 54, 55 End face

Claims (9)

A support arm extending horizontally to lie on the lower surface of the underfloor ventilation opening ;
An underfloor diagnostic instrument, comprising: a probe that hangs down from one side of the support arm so that the tip of the underfloor vent contacts the soil while touching the inner wall surface of the underfloor vent and detects biological deterioration of the wood. The underfloor diagnostic instrument according to claim 1,
An underfloor diagnostic instrument, wherein the probe is made of a material mainly made of wood. The underfloor diagnostic instrument according to claim 1,
The support arm is composed of a tube;
The underfloor diagnostic instrument further includes
An underfloor diagnostic instrument comprising a string inserted through the tube and coupled to the probe. A support arm extending horizontally,
A probe that hangs down from one side of the support arm and detects biological deterioration of the wood,
An underfloor diagnostic instrument, wherein the probe has a plurality of cuts formed at predetermined intervals and in a transverse direction. The underfloor diagnostic instrument according to claim 4,
The underfloor diagnostic instrument, wherein the cut is formed obliquely with respect to the horizontal direction. A support arm extending horizontally,
A probe that hangs down from one side of the support arm and detects biological deterioration of the wood,
The probe is
Tube,
An underfloor diagnostic instrument, wherein an upper end portion includes a wooden bar inserted into the tube. A support arm extending horizontally,
A probe that hangs down from one side of the support arm and detects biological deterioration of the wood,
The support arm is composed of a tube;
The underfloor diagnostic instrument further includes
A string inserted through the tube and coupled to the probe;
The probe is
Tube,
A wooden rod with an upper end portion inserted into the tube,
The tube constituting the support arm has an end face that forms X degrees (0 <X <90) with respect to the transverse direction,
An underfloor diagnostic instrument, wherein the probe tube has an end face forming 90-X degrees with respect to a transverse direction. A support arm extending horizontally,
A probe that hangs down from one side of the support arm and detects biological deterioration of the wood;
Underfloor diagnostic tool, characterized in that provided on the support arm, and a latching member that is hooked under the floor vents. An underfloor diagnostic method using an underfloor diagnostic instrument comprising a support arm extending in a horizontal direction and a probe that hangs down from one side of the support arm and detects biological deterioration of wood ,
The probe of the underfloor diagnostic instrument is inserted into the underfloor ventilation port, the support arm of the underfloor diagnostic instrument is laid on the lower surface of the underfloor ventilation port, and the tip of the probe is applied while the probe is applied to the inner wall surface of the underfloor ventilation port. Attaching the underfloor diagnostic instrument by contacting the soil with soil;
Removing the underfloor diagnostic instrument after elapse of a predetermined period after attaching the underfloor diagnostic instrument;
And a step of examining the biological deterioration of the wood with the probe of the removed underfloor diagnostic instrument.

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