Inspection jig for heat insulating construction

Abstract

To provide an inspection jig for inspecting a heat insulating layer made of urethane foam, which is sprayed on site.SOLUTION: An inspection jig A is used to inspect a heat insulating layer B made of urethane foam, which is sprayed on site, and at least comprises a long skewer part 10 and a moving part 20 capable of moving in a longitudinal direction of the skewer part 10 while inserting the skewer part 10 therethrough. By inserting the inspection jig A into the heat insulating layer B, a distance from the tip of the skewer part 10 to the moving part 20 can be measured as a thickness of the heat insulating layer B. In addition, a thickness confirmation pin D can be attached to a gap between a contact part 30 and an opposing part 40 that constitute the moving part 20, and the thickness confirmation pin D can be installed in the heat insulating layer B.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an inspection jig for inspecting whether a heat insulation layer formed by injecting or spraying urethane foam on site is properly formed or not.

Background Art

[0002] Among the inspections for confirming that the heat insulation work has been properly carried out, there is an operation of measuring the thickness of the heat insulation layer with a urethane thickness measuring instrument as described in Non-Patent Document 1, and inserting and installing the thickness confirmation pins described in Patent Documents 1 and 2 into the heat insulation layer according to the measured thickness of the heat insulation layer.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Non-Patent Documents

[0004]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] When inspecting a heat insulation layer provided in a place where it is difficult for an operator to reach, such as a heat insulation layer on the ceiling side, using the above-described conventional method, the operator has to use a scaffold such as a stepladder to approach the heat insulation layer and perform the thickness measurement work and the installation work of the thickness confirmation pin.

[0006] Therefore, an object of the present invention is to provide an inspection jig for heat insulation work with better convenience.

Means for Solving the Problems

[0007] The present invention made to solve the above problems is an inspection jig used for inspecting a urethane foam heat insulation layer formed by on-site spraying construction, and is characterized by at least comprising a string portion having a long shape, and a moving portion configured to be able to insert the string portion therethrough and movable in the longitudinal direction of the string portion. Further, in the present invention, the moving portion has at least a contact portion and an opposing portion that can be inserted in a skewered manner by the string portion. The contact portion is movable in contact with the surface of the heat insulation layer when the string portion is inserted into the heat insulation layer. The opposing portion is located behind the string portion relative to the contact portion and moves relative to the contact portion. A thickness confirmation pin may be configured to be attachable to the gap between the contact portion and the opposing portion. Further, the present invention further has a connecting portion connecting the contact portion and the opposing portion. The connecting portion is located behind the opposing portion and is a support portion that can be inserted in a skewered manner by the string portion together with the contact portion and the opposing portion. A first connecting portion connecting one end of the support portion and the contact portion, and a second connecting portion connecting the other end of the support portion and the opposing portion may be configured to be included. Further, the present invention may be configured such that by pushing the second connecting portion closer to the first connecting portion, the insertion hole provided in the contact portion, the insertion hole provided in the opposing portion, and the insertion hole provided in the support portion communicate with each other in a plan view. Further, the present invention may be configured to provide a scale indicating the length from the tip of the string portion on the string portion.

Effects of the Invention

[0008] According to the present invention, it has the following effects. (1) By measuring the separation length from the tip of the string part to the moving part, the thickness of the heat insulation layer can be measured. Therefore, even when measuring the thickness of the heat insulation layer provided in a place where it is difficult for an operator to reach, such as the heat insulation layer on the ceiling side, a remote measurement operation using the inspection jig according to the present invention becomes possible. (2) Even in a place where it is difficult for an operator to reach, such as the heat insulation layer on the ceiling side, by using the inspection jig according to the present invention, the operation of installing the thickness confirmation pin can be carried out remotely. (3) By pushing the tip of the string part toward the contact part side, the thickness confirmation pin can be held and attached to the inspection jig. Also, when removing the inspection jig from the thickness confirmation pin inserted and installed in the heat insulation layer, it is only necessary to perform an operation to release the pushing operation of the confirmation pin by the string part, which is highly convenient.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Modes for Carrying Out the Invention

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Embodiment

[0011] <1> Overall Configuration (Fig. 1) The inspection jig A according to the present invention is a jig used for inspecting a heat insulation layer made of urethane foam by on-site spraying construction. As shown in FIG. 1, the inspection jig A according to this embodiment is configured to include at least a string portion 10 and a moving portion 20, and is used for both the measurement operation of the thickness of the heat insulation layer and the installation operation of the thickness confirmation pin. Hereinafter, the details of each part will be described.

[0012] <2> String portion (FIG. 1) The string portion 10 is a member for inserting into the heat insulation layer. A rod-shaped member having a long shape can be used for the string portion 10.

[0013] <2.1> Length of the string portion (FIG. 1) In the present invention, the length of the string portion 10 is not particularly limited. For example, with respect to the heat insulation layer provided on the ceiling, or even when held by an operator from the floor, the maximum length can be set to a length that allows the inspection operation.

[0014] <2.2> Tip shape of the string portion (FIG. 1) In the present invention, the tip shape of the string portion 10 may be a tapered shape for the purpose of facilitating insertion into the heat insulation layer, or may be a non-sharp shape so as not to break through and damage the rear-side member (such as a moisture-permeable waterproof sheet or a member for securing the ventilation layer) of the heat insulation layer when inserting into the heat insulation layer. For this non-sharp shape, a mode of providing a curved surface or a flat surface at the tip can be considered.

[0015] <2.3> Provision of scale (FIG. 1) In the present invention, a scale for length measurement (not shown) may be provided on the rear end side of the string portion 10 with the tip of the string portion 10 as the measurement reference. The reason will be described in the section on the usage method described later.

[0016] <3> Moving portion (FIG. 1) The moving portion 20 is a member that moves on the string portion 10 along with the insertion operation of the string portion 10 into the heat insulation layer. The moving portion 20 may be configured to be movable in the longitudinal direction of the string portion 10 by inserting through the string portion 10. In the present invention, "movable" means that when a force is applied to the moving portion 20, it can move freely in the longitudinal direction of the string portion 10. Further, it is preferable that the moving part 20 is configured such that a thickness confirmation pin can be detachably attached thereto. In the present invention, the shape and structure of the moving part 20 are not particularly limited. However, in the moving part 20 shown in FIG. 1, as a structure for realizing the above-described "movable" and "detachable", it has three types of parts: a contact part 30, an opposing part 40, and a connecting part 50.

[0017] <3.1> Contact part (FIG. 1) The contact part 30 is a part that contacts the surface of the heat insulating layer B when the string part 10 is inserted into the heat insulating layer. In this embodiment, the contact part 30 is configured as a flat plate member having an insertion hole 11 for inserting the string part 10.

[0018] <3.2> Opposing part (FIG. 1) The opposing part 40 is a part for configuring the thickness confirmation pin to be detachably attached as the moving part 20 by sandwiching the head of the thickness confirmation pin together with the contact part 30 in the moving part 20. In this embodiment, the opposing part 40 is configured as a flat plate member having an insertion hole 41 for inserting the string part 10, similar to the contact part 30, and is positioned on the rear side of the string part 10 with respect to the contact part 30.

[0019] <3.3> Connecting part (FIG. 1) The connecting part 50 is a part for connecting the contact part 30 and the opposing part 40 and connecting them in a state where they can move relative to each other. In this embodiment, the connecting part 50 is positioned behind the opposing part 40, and together with the contact part 30 and the opposing part 40, it includes a support part 51 having an insertion hole 511 that is inserted in a skewered manner by the string part 10, a first connecting part 52 that connects one end of the support part 51 and the contact part 30, and a second connecting part 53 that connects the other end of the support part 51 and the opposing part 40. With this configuration, by regarding the first connecting part 52 as a leaf spring, the contact part 30 can be relatively moved with respect to the opposing part 40.

[0020] <4> Usage method (FIGS. 2 and 3) Next, a method of using the inspection jig A according to the present invention will be described. The inspection jig A according to the present invention can be used for at least two types of operations: (1) measuring the thickness of the heat insulation layer B and (2) installing the thickness confirmation pin in the heat insulation layer B.

[0021] (1) Measuring operation of the thickness of the heat insulation layer (Figure 2) When checking whether the urethane foam heat insulation layer B formed by on-site spraying on walls, floors, ceilings, etc. has a predetermined thickness, first, prepare the inspection jig A with the moving part 20 moved to the tip side of the string part 10. Then, insert this inspection jig A into the heat insulation layer B with the tip of the string part 10 as the insertion side (Figure 2(a)). As the insertion depth of the string part 10 into the heat insulation layer B increases, the moving part 20 will be pushed against the surface of the heat insulation layer B and move backward along the string part 10 (Figure 2(b)). When the tip of the string part 10 reaches the rear member C such as a moisture-permeable waterproof sheet or a member for ensuring a ventilation layer provided on the rear side of the heat insulation layer B, pull back the inspection jig A itself. The value measured for the separation length from the tip of the string part 10 to the moving part 20 at this time is the thickness (T) of the heat insulation layer B. At this time, as described in <2.3>, if a scale (not shown) is provided on the string part 10, the thickness (T) of the heat insulation layer B can be measured only by reading the value of this scale.

[0022] (2) Operation of attaching the thickness confirmation pin to the heat insulation layer (Figure 3) When performing the operation of inserting and attaching the thickness confirmation pin D of a predetermined length into the heat insulation layer B, extract the string part 10 from the opposing part 40 constituting the moving part 20, insert the head of the thickness confirmation pin D into the gap between the contact part 30 and the opposing part 40, and push the head of the thickness confirmation pin D with the tip of the string part 10 inserted through the opposing part 40, so that the moving part 20 holds the thickness confirmation pin D. In this state, bring the inspection jig A close to the heat insulation layer B and insert the held thickness confirmation pin D into the heat insulation layer B (Figure 3(a)). Next, by releasing the pushing action of the thickness confirmation pin D by the skewer portion 10 and moving the inspection jig A sideways, it is possible to remove only the inspection jig A while leaving the thickness confirmation pin D inserted into the insulation layer B (Figure 3(b)).

[0023] In the present invention, if the head of the thickness confirmation pin D can be held to some extent by the contact portion 30 and the facing portion 40, the operation of pushing the head of the thickness confirmation pin D with the tip of the skewer portion 10 is not essential.

[0024] (3) Summary In this way, the inspection jig A of the present invention can perform both the thickness measurement work of the insulation layer B and the installation work of the thickness confirmation pin D, and is particularly suitable for places that are difficult for workers to reach (for example, work on the insulation layer B on the ceiling side). EXAMPLES

[0025] Next, modified examples of the inspection tool according to the present invention will be described with reference to FIGS.

[0026] <1> Modification 1 (forming a notch) (Figure 4) In this modification, a notch 32 is provided on the side edge of a contact portion 30 constituting the moving portion 20 . According to this modified example, the notch 32 allows the thickness confirmation pin D (not shown in FIG. 4) to be accommodated deeper in the gap between the contact portion 30 and the opposing portion 40, making it less likely that the thickness confirmation pin D will come out of the gap between the contact portion 30 and the opposing portion 40 during installation work.

[0027] <2> Modification 2 (deviation of insertion hole) (Fig. 5) In this modified example, in the initial state of the moving part 20, the insertion hole 41 provided in the opposing part 40 is provided at a position slightly offset from the insertion hole 31 provided in the contact part 30, so that the insertion hole 31 provided in the contact part 30, the insertion hole 41 provided in the opposing part 40, and the insertion hole 511 provided in the support part 51 are not connected in a planar view (Figure 5(a)). Then, from this initial state, by pushing the second connecting portion 53 so as to approach the first connecting portion side 52, the insertion holes 31, 41, and 511 are configured to be communicable in a plan view (FIG. 5(b)). According to this modification example, since a lateral force is applied to the string portion 10 by the force with which the second connecting portion 53 tries to return to the initial state, it is possible to obtain the effect of making it easier to hold the position of the moving portion 20 in the string portion 10 and the effect of making it easier to suppress the rotation of the moving portion 20 around the string portion 10.

[0028] <3> Modification Example 3 (Formation of Multiple Insertion Holes) (FIG. 6) In this modification example, in the initial state of the moving portion 20, additional insertion holes are provided in each of the opposing portion 40 and the support portion 51. The insertion holes 41a and 51a, together with the insertion hole 31 provided in the contact portion 30, are used for the insertion by the string portion 10 in the above-mentioned [(1) Thickness Measurement Operation of the Heat Insulation Layer]. Further, the insertion holes 41b and 51b can obtain the effect of suppressing the formation of new holes in the heat insulation layer B by the string portion 10 during the above-mentioned (2) Attachment Operation of the Thickness Confirmation Pin D by preventing the tip of the string portion 10 from protruding to the heat insulation layer B side when the string portion 10 is inserted.

[0029] <4> Modification Example 4 (Shape of the Tip of the String Portion) (FIG. 7) In this modification example, a protruding portion 11 provided with a step is formed at the tip of the string portion 10. In the present invention, the planar shape of the protruding portion 11 is not particularly limited. By engaging this protruding portion 11 with the insertion hole 41b provided in the opposing portion 40, it is possible to obtain the effect of suppressing the formation of new holes in the heat insulation layer B by the string portion 10 during the above-mentioned [(2) Attachment Operation of the Thickness Confirmation Pin D]. Further, for example, the shapes of the insertion hole 41b and the protruding portion 11 may be designed so that the protruding portion 11 cannot rotate with respect to the insertion hole 41b. In this case, during the above-mentioned (2) Attachment Operation of the Thickness Confirmation Pin D, the rotation of the moving portion 20 with respect to the string portion 10 can be suppressed, and it becomes easier to attach the thickness confirmation pin D to the target position of the heat insulation layer B.

Explanation of Reference Numerals

[0030] A: Inspection jig B: Heat insulation layer C: Rear side member D: Thickness confirmation pin 10: String part 11: Protrusion 20: Moving part 30: Contact part 31: Insertion hole 40: Opposing part 41: Insertion hole 50: Connecting part 51: Support part 511: Insertion hole 52: First connection part 53: Second connection part

Claims

Claim 1 An inspection jig used for inspecting a heat insulation layer made of urethane foam by on-site spraying construction, comprising: a rod-shaped part presenting a long shape, and a moving part configured to be able to insert the rod-shaped part therethrough and movable in the longitudinal direction of the rod-shaped part, characterized by comprising at least the above, an inspection jig for heat insulation work. Claim 2 The moving part has at least a contact part and an opposing part that can be inserted in a skewered manner by the rod-shaped part, the contact part is movable in contact with the surface of the heat insulation layer when the rod-shaped part is inserted into the heat insulation layer, the opposing part is located behind the rod-shaped part relative to the contact part and moves relatively with the contact part, characterized in that a thickness confirmation pin can be attached to the gap between the contact part and the opposing part, the inspection jig for heat insulation work according to Claim 1. Claim 3 further comprising a connecting part connecting the contact part and the opposing part, the connecting part being a support part located behind the opposing part and capable of being inserted in a skewered manner by the rod-shaped part together with the contact part and the opposing part, a first connecting part connecting one end of the support part and the contact part, a second connecting part connecting the other end of the support part and the opposing part, characterized by having the above, the inspection jig for heat insulation work according to Claim 2. Claim 4 By pushing the second connecting part so as to approach the first connecting part, the insertion hole provided in the contact part, the insertion hole provided in the opposing part, and the insertion hole provided in the support part communicate with each other in a plan view, the inspection jig for heat insulation work according to Claim 3. Claim 5 characterized in that a scale indicating the length from the tip of the rod-shaped part is provided on the rod-shaped part, the inspection jig for heat insulation work according to Claim 1.

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