JP2011231585A - Heat insulating structure, fastener used therein, construction method therefor, and drill used for constructing the insulating structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide enhanced workability and heat insulation in constructing a heat insulating layer with a preformed heat insulating panel.SOLUTION: Preformed heat insulating panels 7 are aligned in a matrix, and subsequently a furring strip 2 is fixed to the heat insulating panel 7. Subsequently, the insulating panel 7 is penetrated with a drill through a fitting hole in the furring strip 2 to make pilot holes 14 and 15 in the heat insulating panel 7 and a concrete wall W. Subsequently, a thread 11 of a rod 10 is screwed into the pilot hole 15 of the concrete wall W. The rod 10 has a washer 13 fixed to the base end, and the furring strip 2 is held down with the washer 13. Excellent workability is achieved, because inking, mounting of an anchor nut, and preliminary processing of the heat insulating panel 7 are unnecessary. Adequate heat insulation is achieved, because of the tight fitting of the rod 10 into the pilot hole 14.

Description

  The present invention relates to a heat insulating structure such as a cold storage warehouse, a fastener used for the heat insulating structure, a construction method for the heat insulating structure, and a drill used for the construction for the heat insulating structure.

  It is widely performed to provide a heat insulating structure by providing a heat insulating layer on a wall, floor, ceiling, or the like of a building. Generally, a foamed resin having an infinite number of closed cells is used as the material of the heat insulating layer, and the heat insulating layer is configured by arranging a large number of heat insulating panels formed in a plate shape or a block shape vertically and horizontally. In some cases, the material resin may be foamed on site.

  In the former method using a heat insulating panel, a group of heat insulating panels is pressed and held by a casing with a pressing member that overlaps the surface thereof, and the pressing member is fixed to the casing (for example, a concrete wall) with a fastener.

  As a structure that requires high heat insulation, there are cold storage warehouses (refrigerated warehouses, frozen warehouses). When the wall of this cold storage warehouse is made up of a group of heat insulation panels and has a heat insulation structure, a horizontally long, U-shaped body edge arranged at an appropriate interval above and below is overlaid on a group of heat insulation panels, and the body edge is fastened to a concrete wall with a fastener. Furthermore, the rubbing which consists of a folded plate (keystone plate) of the uneven | corrugated shape of planar view which a load and a pallet contact is fixed to the trunk edge with a screw. The reason why the folded plate having a concave-convex shape in plan view is used for rubbing the load is to secure an air layer between the load and the heat insulation panel to ensure a cold keeping function of the load.

  And as a fastener for fixing a pressing member, generally, an anchor nut, a double-sided bolt, a resin rod, and a headed bolt are used, and the heat insulating layer has been constructed by the following method.

  In other words, inscription on the concrete wall based on the layout drawing and filling in the position of the anchor nut, attaching a large number of anchor nuts, making holes in the insulation panel in advance to fit the resin rod based on the layout drawing, Attach a resin rod to each anchor nut via a double-cut bolt, arrange a group of heat insulation panels and open the resin rod in the hole, overlap the body edge on the surface of the group of heat insulation panels, and attach the head bolt to the end face of the resin rod A method of fixing the barrel edge to the resin rod by screwing into the resin rod was adopted. The resin rod is used to ensure heat insulation.

  On the other hand, using a screw as a fastener and fastening a heat insulation panel to a housing with a screw is widely performed particularly in ordinary houses (see, for example, Patent Documents 1 and 2). Also in cold storage warehouses, it has been proposed to hold and hold a heat insulation panel using screws or nails. As an example, Patent Document 3 employs a groove formed on an end face of an adjacent heat insulation panel. It is disclosed that this hire ridge is fastened to a concrete wall with screws or nails.

JP 2005-23654 A Japanese Patent No. 3831715 Japanese Patent No. 2665546

  Now, the method of forming the heat insulation layer by in-situ foaming has a large environmental impact because the gas such as freon used for foaming is released to the atmosphere, and when the heat insulation layer is removed when the building is dismantled or renovated, the work is carried out. There is a problem that it is very troublesome. On the other hand, the method of pasting a pre-formed insulation panel has a low environmental impact because it can be properly managed at the factory even if gas is used for foaming, and it is easy to remove the insulation panel during dismantling and repair There is an advantage that can be done.

  The method of attaching a heat insulation panel in this way has an advantage over the field foaming method, but the conventional method using an anchor nut or the like has a problem that the inking operation is troublesome, and the anchor nut is positioned accurately. Problems that are troublesome to install, problems that require a lot of holes in the insulation panel in advance, problems that require a lot of time and effort to correctly allocate a large number of insulation panels, positions of the rods and holes of the insulation panel In order to absorb the error, there were many problems in terms of work efficiency and accuracy, ensuring heat insulation, such as the problem that the heat insulation performance deteriorated if the hole diameter was made larger than the rod.

  This invention is made | formed in view of such the present condition, and makes it a subject to eliminate the conventional problem, enjoying the advantage of using a heat insulation panel.

  The present invention includes a heat insulating structure and a construction method thereof, a fastener used in the heat insulating structure, and a drill used in the construction method. The invention of claim 1 relates to a heat insulating structure, and the present invention includes a housing and a heat insulating layer stretched on the inner surface or outer surface thereof, and the heat insulating layer is formed into a plate shape or a block shape. The heat insulation panel group is arranged by arranging vertically and horizontally, and the heat insulation panel group is basically held by the housing with a pressing member and a fastener. .

  In the invention of claim 1, the fastener includes a resin rod penetrating the pressing member and the heat insulating layer, a screw protruding from a tip of the rod and screwed into the housing, and a base of the rod. And a flange portion that is provided at the end and overlaps the surface of the pressing member.

  According to a second aspect of the present invention, the invention according to the first aspect is applied to a cold storage warehouse. In the present invention, the frame has a concrete wall, and the heat insulating layer is stretched on the inner surface of the wall. On the other hand, the pressing member is made of a metal plate and has an elongated band plate portion that overlaps the heat insulating layer. The band plate portion is formed with a fitting portion that bites into the heat insulating layer. The member is fixed with a metal plate interior material having a concave-convex shape in plan view in which a load or a side surface of the pallet can abut.

  Invention of Claim 3 is the construction method of the heat insulation structure described in Claim 1. In this construction method, the group of the heat insulating panels, the fastener provided with a screw and a flange on the rod, a band-shaped portion that overlaps the heat insulating layer, and a fitting portion that bites into the heat insulating layer, and the band plate portion includes the The pressing member having a mounting hole through which the rod passes and a drill for forming a pilot hole in the heat insulating layer and the housing are prepared.

  And the step of arranging the heat insulation panel vertically and horizontally and arranging it in the housing, the step of temporarily holding the pressing member on the surface of the heat insulating layer by causing the fitting portion of the pressing member to bite into the heat insulating layer, the pressing member A step of making a drill enter the heat insulation layer from the mounting hole to make a pilot hole in the heat insulation layer and the housing, inserting a rod of the fastener into the pilot hole made in the heat insulation layer, and attaching the screw to the housing The step of pressing the pressing member with the flange portion of the fastener by being screwed into the prepared hole is taken.

  The invention of claim 4 is the fastener used in the invention of claim 1, and a resin rod penetrating the pressing member and the heat insulating layer, and a self protruding from the tip of the rod so as to be screwed into the housing. It has a tapping screw and a flange portion provided at the base end of the rod and overlapping the surface of the pressing member.

  Invention of Claim 5 is the said drill used for the construction method described in Claim 3, and this invention makes a large-diameter main-body part for making a pilot hole in the said heat insulation layer, and making a pilot hole in the said housing. A distal end portion having a small diameter, and the distal end portion is fitted in a hole formed in the main body portion, and a cutting edge extending in a radial direction is formed on the distal end surface of the main body portion. In addition, a groove is formed on the outer peripheral surface of the main body for allowing the chips to escape.

  In the heat insulation structure and construction method of the present invention, since the screw is provided at the tip of the resin rod and the flange portion is provided at the base end, the group of the heat insulation panels is attached to the housing, and then the pilot holes are provided in the heat insulation panel and the housing. The holding member can be fastened to the group of heat insulating panels by opening the screw and screwing the screw at the tip of the rod into the pilot hole of the housing.

  The invention of the present application eliminates the need for inking work, eliminates the trouble of attaching an anchor nut and the need of previously making a hole in the heat insulation panel, and the heat insulation panel does not need to be assigned accurately and is simply stretched. For example, there is no need to rework the hole without fitting the hole in the heat insulation panel into the rod, and the position of the pressing member can be set arbitrarily. Efficiency can be improved significantly.

  In addition, since the heat insulation panel is a hole to be prepared in a state where it is stretched on the housing, there is no problem of misalignment between the pilot hole and the rod. For this reason, the pilot hole is opened in a state where the rod fits tightly. be able to. Therefore, there is no problem that a gap is formed between the prepared hole of the heat insulation panel and the rod and the heat insulation performance is lowered, and high heat insulation performance can be secured.

  Although the present invention can be applied to various heat insulating structures, since it exhibits high heat insulating performance, it can be said that the true value is strongly exerted when applied to a cold storage warehouse as in claim 2. As a method of making a pilot hole in the heat insulation panel and the housing, it is also possible to adopt a method of first making a pilot hole in the heat insulation panel and the housing with a small diameter drill, and then making a hole in the heat insulation panel with a large diameter drill, If the drill which has a main-body part and a small diameter front-end | tip part is used like Claim 5, since a pilot hole can be drilled in both a heat insulation panel and a housing | casing by one operation | work, work efficiency is good.

  And since the frame of the building (structure) is made of concrete or steel and is hard, there is a problem that the drill that makes a hole in this is easily broken or worn. If the drill is configured to be detachable from the main body, it is economical because the tip can be replaced if worn.

(A) is a cross-sectional perspective view of the heat insulation wall which concerns on this embodiment, (B) is a front view of a heat insulation wall. 2A is a sectional view taken along the line IIA-IIA in FIG. 1B, and FIG. 2A is a sectional view taken along the line IIB-IIB in FIG. The partially broken isolation view of the fastener concerning this embodiment, (B) is a perspective view of a trunk edge, and (C) is a top view of a trunk edge concerning another example. (A) is sectional drawing which shows the 1st step of construction, (B) is the BB view front view of (A), (C) is sectional drawing which shows the 2nd step of construction. (D) is a cross-sectional view showing the third stage of construction, (E) is a partially broken separated view of the drill, ((F) a partial view of the main body of the drill, (G) is a GG view of (F)) FIG. 5H is a cross-sectional view showing a state where the pilot holes are completely formed. It is a figure which shows the 4th stage of construction. It is a figure which shows the fastener which concerns on other embodiment. It is sectional drawing of the heat insulation structure which concerns on other embodiment.

  Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 6 show an embodiment applied to a cold storage warehouse. In this embodiment, the embodiment is applied to a heat insulating wall.

(1). Structure First, the structure of the heat insulating wall will be described. As can be understood from FIG. 1, this heat insulating wall includes a concrete wall W constituting a casing, a heat insulating layer 1 stretched on the inner surface of the concrete wall W, and a horizontally long trunk edge 2 arranged on the surface of the heat insulating layer 1. And a fastener 3 for attaching the trunk edge 2 to the concrete wall W. The body edge 2 is an example of a pressing member described in claims, and a load rubbing (interior material) 4 made of a folded plate is fixed to the body edge 2 with a screw 5 such as a drill screw.

  A waterproof sheet 6 is fixed to the inner surface of the concrete wall W by adhesion or the like. The heat insulation layer 1 is composed of a large number of heat insulation panels 7 formed in a plate shape with a quadrangle in a front view. In this embodiment, three layers of a group of the heat insulation panels 7 are overlapped. Of course, the number of layers of the heat insulation panel 7 can be arbitrarily set according to the required heat insulation performance, and therefore, it may be one layer, two layers, or four layers or more. Moreover, the thickness of the heat insulation panel 7 can also be set arbitrarily. The heat insulating panel 7 is made of a synthetic resin foam plate such as urethane or styrene.

  The trunk edge 2 is arranged horizontally corresponding to the heat insulating panel 7 of each stage. It is also possible to use a longitudinal frame in addition to (or instead of) the laterally long barrel edge 2. As shown in FIG. 3 (B), the trunk edge 2 has a U-shape (channel shape) with a band plate portion 2a that overlaps the surface of the heat insulating layer 1 and an insertion portion 2b that is bent at the longitudinal edge thereof. A number of biting teeth 8 are continuously formed in the fitting portion 2b. For this reason, the fitting part 2b can be driven into the heat insulation panel 7.

  In this case, the biting tooth 8 has one side orthogonal to the longitudinal line of the trunk edge 2 and the other side inclined with respect to the longitudinal line of the trunk edge 2. That is, each biting tooth 8 is a right triangle, and the group of biting teeth 8 has a sawtooth shape as a whole. In this way, when the sawtooth shape was adopted, the bite was good.

  The biting teeth 8 can be formed in an isosceles triangle shape as shown in FIG. In (C), the opening angle θ of the biting teeth 8 is set to an acute angle, but θ may be a right angle or an obtuse angle. The body edge 2 can be a simple flat plate or L-shaped in cross section, but if it is made U-shaped as in this embodiment, the section modulus is increased, so that the strength is excellent. Further, if the biting teeth 8 are formed so as to be driven into the heat insulating panel 7, it is not necessary to form a groove in the heat insulating panel 7, and there is an advantage that the processing cost of the heat insulating panel 7 can be suppressed.

  An attachment hole 9 is vacant in the band plate portion 2 a of the trunk edge 2. The attachment hole 9 may be circular, or may be a long hole as shown by a one-dot chain line in FIG. The mounting holes 9 are opened corresponding to the respective heat insulating panels 7, but one mounting hole 9 is formed corresponding to the plurality of heat insulating panels 7, or two mounting holes 9 are formed corresponding to the three heat insulating panels 7. It is also possible to make it free.

  The fastener 3 includes a circular rod 10 penetrating the group of heat insulating panels 7, screws (screws) 11 attached to the tip of the rod 10 facing the concrete wall W, and the rod 10 opposite to the concrete wall W. It is comprised with the washer 13 made from the metal plate fixed to the base end surface which faced with the hexagon bolt 12 (The washer is abbreviate | omitted in FIG. 1 (B).). The rod 10 is made of a resin such as polyacetal, and female screw holes 14 and 15 are formed on the distal end surface and the proximal end surface thereof. The female screw holes 14 and 15 at both ends are set to have the same inner diameter and the same depth. For this reason, the rod 10 has no directionality.

  The screw 11 has a tapping screw portion 11a to be screwed into the concrete wall W and a metric screw portion 11b to be screwed into the female screw hole 14 on the distal end side of the rod 10, and a ring-shaped protrusion (flange) between the two. ) 11c is formed. The protrusion 11c may not be provided. It is also possible to hide the ridge 11 c inside the rod 10.

  Although details are omitted, the tapping screw portion 11a has a so-called concrete screw structure. That is, it consists of two threads with a large lead angle, and the height and the thread shape of the two threads are different. In this embodiment, the tapping screw portion 11a and the metric screw portion 11b are set to the same nominal diameter (for example, 6 mm), but it is needless to say that the nominal diameters may be different.

  The washer 13 constitutes the flange portion described in the claims, and has a ridge-like (large cross-sectional shape) bulging portion 10a protruding toward the rod 10, and the bottom plate of the bulging portion 10a is The bolt 12 is fastened to the rod 10. The maximum outer diameter of the bulging portion 10 a is slightly larger than the outer diameter of the rod 10. Although the outer diameter dimension of the washer 13 is set to be larger than the width dimension of the trunk edge 2, it goes without saying that it may be the same dimension as or smaller than the width dimension of the trunk edge 2.

  The attachment hole 9 of the trunk edge 2 is set to an inner diameter into which the bulging portion 10a of the washer 13 is fitted. Therefore, as shown in FIG. 2A, the bulging portion 13 a of the washer 13 is in a state of being bitten into the heat insulating panel 7. The washer 13 exhibits high strength due to the rib effect of the bulging portion 13a, and as a result, the pressing strength of the trunk edge 2 is also high.

  In addition, as a manufacturing method of the rod 10, a method of forming the female screw holes 14, 15 by drilling and tapping after cutting a round bar, or a method of forming the female screw holes 14, 15 by an injection molding method. Both can be adopted. When the rod 10 is manufactured by the injection molding method, the screw 11 and the bolt 12 can be attached (integral molding) by the insert molding method.

(2). Construction Method Next, a construction method for the heat insulation wall will be described with reference to FIGS. In this embodiment, first, as a preliminary stage, the waterproof sheet 6 is bonded to the inner surface of the concrete wall W with an adhesive, and then, as shown in FIG. I will stick it. In this case, the heat insulating panel 7 in the back layer is bonded to the waterproof sheet 6 with an adhesive, the heat insulating panel 7 in the intermediate layer is bonded to the heat insulating panel 7 in the deep layer with an adhesive, and the heat insulating panel 7 in the surface layer is heat insulating in the intermediate layer. The panel 7 is adhered with an adhesive. The adhesive may be applied to the entire surface of the heat insulating panel 7 or may be partially applied like a dotted pattern.

  Further, as shown in FIG. 4B, the heat insulating panels 7 overlapped in the front and back directions are arranged in a staggered arrangement so that the joint surface of the preceding heat insulating panel 7 is covered with the wide surface of the subsequent heat insulating panel 7. preferable. This prevents air leakage and further improves the heat insulation performance.

  When the heat insulation panel 7 is finished, as shown in FIG. 4C, the trunk edge 2 is driven in and attached to the surface heat insulation panel 7 as a second stage. The trunk edge 2 is generally arranged corresponding to the heat insulating panel 7 of each step, but it is not always necessary to be concerned with this, and the vertical interval can be arbitrarily set in consideration of the required pressing strength.

  Next, as a third stage, as shown in FIG. 5D, drill holes 18 and 19 are made in the heat insulation panel 7 and the concrete wall W using a drill 17 (and a rotary tool). The drill 17 is caused to enter the heat insulation panel 7 from the position of the attachment hole 9 of the trunk edge 2.

  The drill 17 includes a main body portion 20 for opening the pilot hole 18 in the heat insulating panel 7 and a tip portion 21 for opening the pilot hole 19 in the concrete wall W. The tip portion 21 is more than the main body portion 20. It has a small diameter. The distal end portion 21 is a general concrete drill, and a tapered boss portion 21a is provided at the proximal end. A boss 20a that is attached to a tool is integrally provided at the base end of the main body 20.

  On the other hand, a tapered boss hole 22 into which the boss portion 21 a of the tip end portion 21 is fitted is formed in the front end surface of the main body portion 20. Further, two escape grooves 23 are formed on the outer periphery of the main body portion 20 for discharging chips. Although most of the escape groove 23 has a spiral shape, the front portion 23 a extends linearly in the same direction as the main body portion 20. The reason why the front portion 23a of the escape groove 23 is formed in a straight line is to prevent the processing of the boss hole 22 from being hindered. Two cutting edges 24 extending in the radial direction are provided at the front end of the main body 21. Due to the presence of the cutting blade 24, the heat insulating panel 7 can be cut lightly.

  Since concrete is hard, it is preferable to use a vibrating drill that can be used with a vibrating tool for the tip 21 of the drill 17. When the main body portion 20 of the drill 17 hits the concrete wall W, the push-in resistance increases and further entry becomes impossible, so the drill 17 is removed. Then, for example, compressed air is blown out into the pilot holes 18 and 19 with a long and narrow nozzle to remove chips (vacuum suction with a vacuum cleaner or the like is also possible).

  Next, as a fourth stage, as shown in FIG. 6, the rod 10 of the fastener 3 is inserted into the prepared hole 18 in the heat insulating panel 7, and the screw 5 of the fastener 3 is placed under the concrete wall W using a power driver. Screw into hole 19. As a result, the state shown in FIG. 2 is obtained. Note that an adhesive 25 can be poured into the prepared hole 19 of the concrete wall W as needed. In the case of an ALC wall, it is not always necessary to make a pilot hole.

(3). Summary As described above, in the present invention, the heat insulation panel 7 may be simply stretched without worrying about allocation, and trouble such as attaching an anchor nut is not required. In addition, since it is sufficient to follow the simple procedure of drilling the pilot holes 18 and 19 and screwing the fasteners 3 after the trunk edge 2 is overlapped and held on the heat insulation panel 7 after being stretched, Time and effort can be greatly reduced compared to the conventional method.

  Further, since the rod 10 is fitted in the pilot hole 18 vacated at the site, there is no problem of positional displacement between the rod 10 and the pilot hole 18. For this reason, the rod 10 is tightly fitted in the pilot hole 18 of the heat insulating panel 7. And insert. For this reason, high heat insulation is securable. Moreover, since the fastener 10, the screw | thread 11, the volt | bolt 12, and the washer 13 are integrated integrally, the fastener 3 is easy to handle, and construction is also easy. Furthermore, if the tip portion 21 of the drill 17 is detachable from the main body portion 20, the tip portion 21 can be easily replaced.

  Furthermore, the washer 13 of the present embodiment has a bulging portion 13a and is therefore excellent in strength. However, in this embodiment, the head of the bolt 12 is hidden by the bulging portion 13a, so When attaching, there is an advantage that the head of the bolt 12 does not get in the way. The fastener 3 is rotated by inserting a wrench of a rotary tool into the head of the bolt 12, and the bolt 12 has two functions of fastening the washer 13 and rotating the fastener 3. So it can simplify the structure.

  Moreover, in this embodiment, since the internal threads 14 and 15 of the rod 10 are set to the same diameter and the same depth, the nominal diameter and length of the metric thread portion 11b in the screw 11 and the nominal diameter and length of the bolt 12 are set. Therefore, the rod 10 has no directionality, and the time and labor for assembling the fastener 3 can be reduced. This is also one of the advantages of this embodiment.

  The body edge 2 has a large number of mounting holes 9, but it is not necessary to use the fasteners 3 at all the mounting holes 9. If the number of the fasteners 3 is selected according to the required strength, Good. To put it the other way around, a large number of mounting holes 9 can be made and the mounting holes 9 to be used can be selected, so that it is not necessary to prepare many types of trunk edges 2 with different numbers of mounting holes 9. One type of trunk edge 2 can be used.

(4). Other Embodiments / Others FIG. 7 shows another embodiment of the fastener 3. Among these, in (A), the screw 11 has the unthreaded part 11d of a raw material diameter, and is not provided with the protrusion. Therefore, the front end surface of the rod 10 can be brought into close contact with the concrete wall W. In (A), the flange portion 27 is integrally formed with the rod 10. And the bolt 12 is attached to the rod 10 for rotation operation. The screw 11 and the bolt 12 can be attached to the rod 10 by the Isart molding.

  In the example shown in FIG. 7B, when the flange portion 27 is integrally formed at the base end of the rod 10, the hexagonal hole 28 is formed on the base end surface of the rod 10. Needless to say, a hexagon wrench is inserted into the hexagon hole 28. With such a configuration, the structure becomes simpler.

  The example shown in FIG. 8 is applied to the outside heat insulation of a building such as a prefabricated house. In this example, the housing is a support column 29 made of a channel material, and a group of heat insulating panels 7 is fixed to the outer surface of the support column 29 by the vertical frame 30 and the fastener 3. A wall material 31 is disposed outside the heat insulating layer 1 made of the heat insulating panel 7. Although the waterproof sheet 6 is stretched on the outer surface of the support column 20, a panel material or a steel plate can be stretched.

  The present invention can be embodied in various ways other than the above embodiment. For example, the material of the heat insulation panel can be selected as necessary, and for example, an inorganic material such as glass wool can be adopted. It is also possible to use a laminate of a plurality of materials.

  Moreover, the form of the pressing member can be arbitrarily set, and for example, a plate material that covers the entire heat insulating layer can be used. When applied to a cold storage warehouse, the folded plate can be formed as a pressing member, and the folded plate can be fixed to the heat insulating layer with a fastener. The flange portion of the fastener does not need to be circular, and can be, for example, square or elliptical. The heat insulation panel can be formed in a regular hexagonal shape, or can be used in combination with different sizes.

  The present invention is useful when applied to a heat insulating structure such as a cold storage warehouse. Therefore, it can be used industrially.

W Concrete wall which is an example of a casing 1 Thermal insulation layer 2 Body edge as an example of a pressing member 3 Fastener 4 Load rubbing (folded plate) as an example of interior material
7 Thermal insulation panel 10 Rod 11 Screw 12 Bolt 13 Washer 17 Drill 18, 19 Pilot hole 20 Drill body 21 Drill tip

Claims (5)

It has a casing and a heat insulating layer stretched on the inner surface or outer surface thereof, and the heat insulating layer is configured by arranging a group of heat insulating panels formed in a plate shape or a block shape in vertical and horizontal alignment. And the group of the heat insulating panels is configured to be pressed and held by the casing with a pressing member and a fastener,
The fastener is provided with a resin rod penetrating the pressing member and the heat insulating layer, a screw protruding from the tip of the rod and screwed into the housing, and a proximal end of the rod. And a flange portion overlapping the surface of the
Thermal insulation structure. The casing has a concrete wall, and the heat insulating layer is stretched on the inner surface of the wall,
The pressing member is made of a metal plate and has an elongated band plate portion that overlaps the heat insulating layer. The band plate portion is formed with a fitting portion that bites into the heat insulating layer. Is fixing the metal plate interior material in a plan view uneven shape that can contact the side of the load or pallet,
A cold storage warehouse as a heat insulating structure according to claim 1 It is the construction method of the heat insulation structure described in claim 1,
A group of the heat insulating panels; the fastener provided with a screw and a flange on the rod; a belt-like portion that overlaps the heat insulating layer; and a fitting portion that bites into the heat insulating layer, and the rod penetrates the belt plate portion. Prepare the holding member having a mounting hole and a drill for drilling a pilot hole in the heat insulation layer and the housing,
A step of arranging the heat insulation panels vertically and horizontally in a case;
Temporarily holding the pressing member on the surface of the heat insulating layer by causing the fitting portion of the pressing member to bite into the heat insulating layer;
A step of opening a drill hole in the heat insulation layer and the housing by allowing a drill to enter the heat insulation layer from the attachment hole of the pressing member,
Inserting the rod of the fastener into the pilot hole made in the heat insulation layer and screwing the screw into the pilot hole made in the housing, thereby pressing the pressing member with the flange portion of the fastener;
The construction method of the heat insulation structure which has. It is a fastener used for the heat insulation structure of Claim 1,
A resin rod penetrating the pressing member and the heat insulating layer, a self-tapping screw protruding from the tip of the rod so as to be screwed into the casing, and a base end of the rod provided on the surface of the pressing member With overlapping flanges,
Fasteners used for insulation structures. It is the said drill used for the construction method described in Claim 3, Comprising:
It has a large-diameter main body part for making a pilot hole in the heat insulation layer, and a small-diameter tip part for making a pilot hole in the housing, and the front-end part fits into a hole made in the main body part. In addition, a cutting tooth extending in the radial direction is formed on the distal end surface of the main body portion, and a groove for releasing chips is formed on the outer peripheral surface of the main body portion.
Drill used for construction of thermal insulation structures.

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