JP2007070865A - Spacer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spacer usable even upside down and enabling the avoidance of lowering of the moisture releasing performance of a heat insulation material and the ventilation efficiency of a ventilation passage. <P>SOLUTION: The spacer 1 is formed by providing irregular shapes on a synthetic resin sheet material 1a by vacuum molding. Convex parts 2 having the front surfaces formed in a projected shape and the rear surfaces formed in a recessed shape are formed to project at the large number of portions of the sheet material 1a by bending the sheet material 1a to the surface side. The projected end faces 2a of the convex parts 2 are formed as abutting faces 3 abutting on one of a heat insulating material 16 and an external material 18. The rear face of a flat surface plate part 4 as the remaining portion of the convex parts 2 in the sheet material 1a is formed as an abutting face 5 abutting on one of the heat insulating material 16 and the external material 18. A through hole 6 passed from the front to the rear of the surface plate part 4 is formed therein. Groove parts 7 opening to the projected end faces 2a of the convex parts 2 are formed by recessing them from the projected end faces 2a of the convex parts 2 to the rear face side. Both ends of the groove parts 7 are opened to the side peripheral surfaces 2b of the convex parts 2 rising from the surface plate part 4. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a spacer used for securing a ventilation path of a wall body to a predetermined width.

  Conventionally, an air passage 17 is provided between a heat insulating material 16 provided inside and an exterior material 18 in a wall body 14 of a building, and air is passed through the air passage 17 to remove moisture in the wall 14. A ventilation wall that can be discharged outward is known. In order to secure a ventilation path 17 having a predetermined width in a wall body 14 having a ventilation path 17 such as this ventilation wall, a heat insulating material 16 and an exterior are provided. A spacer 1 ′ is interposed between the material 18 and the material 18. As the spacer 1 ', for example, as shown in FIG. 7, a synthetic resin sheet material 1a is formed in an uneven shape (see, for example, Patent Document 1). Specifically, the spacer 1 'has a bent portion 2 protruding from the front surface side by bending the sheet material 1a itself at a large number of locations on the sheet material 1a and having a convex shape on the front surface and a concave shape on the back surface. Yes, the protruding front end surface 2a of the bent portion 2 is grounded to the heat insulating material 16, and the back surface of the flat face plate portion 4 that is the remaining portion of the bent portion 2 in the sheet material 1a is grounded to the exterior member 18. By using it, the width of the air passage 17 is to be secured to the same width as the protruding distance of the bent portion 2 from the face plate portion 4.

  By the way, the wall body 14 such as a ventilation wall is intended to eliminate the occurrence of condensation in the ventilation wall by venting outside air through the ventilation path 17 and releasing moisture contained in the heat insulating material 16 from the indoor side. However, when the back surface of the face plate portion 4 of the spacer 1 ′ having the above structure is grounded to the heat insulating material 16 and the protruding front end surface 2 a of the bent portion 2 is grounded to the exterior material 18, moisture from the heat insulating material 16 The release to the air passage 17 is blocked by the spacer 1 ′, that is, the spacer 1 ′ having the above configuration cannot be used in the reverse direction.

Further, even when the spacer 1 'is used with the spacer 1' having the protruding tip surface 2a of the bent portion 2 grounded to the heat insulating material 16 as described above, the protruding tip surfaces 2a of many bent portions 2 are grounded The moisture could not be released from the heat insulating material 16 in the part to the ventilation passage 17, and the moisture releasing performance of the heat insulating material 16 was lowered. More specifically, the large number of bent portions 2 that are parts that are passed to the air passage 17 in the first place narrow the air passage of the air passage 17 and reduce the air passage efficiency of the air passage 17. Met.
JP 2003-56085 A

  The present invention has been made in view of the above-described conventional problems, and provides a spacer that can be used even if it is turned upside down, and that can also avoid a decrease in the moisture release performance of the heat insulating material and the ventilation efficiency of the ventilation path. This is a problem.

  In order to solve the above-mentioned problem, a spacer according to claim 1 of the present invention is a spacer 1 for securing an air passage 17 having a predetermined width between a heat insulating material 16 and an exterior material 18, and is a synthetic resin sheet. The spacer 1 is formed by vacuum forming the material 1a so as to form an uneven shape, and the sheet material 1a is bent to the front surface side at many locations of the sheet material 1a so that the surface has a protruding shape and the back surface has a recessed shape. The projecting bent portion 2 is projected, and the projecting tip end surface 2a of the bent portion 2 is used as the grounding surface 3 to be grounded to either the heat insulating material 16 or the exterior material 18, and the bent portion of the sheet material 1a is used. 2, the back surface of the flat face plate portion 4, which is the remaining portion of 2, is used as a ground surface 5 for grounding to either the heat insulating material 16 or the exterior material 18, and through holes 6 penetrating the front and back are formed in the face plate portion 4. Recessed from the protruding front end surface 2a of the curved portion 2 to the back surface side Characterized in that each projectingly bent portion 2 of the side peripheral surface 2b rising both ends of the groove portion 7 from the surface plate 4 to form the opening to the groove 7 is opened in the projecting distal end face 2a Te. Thus, moisture contained in the heat insulating material 16 can be discharged to the air passage 17 through the through hole 6 when the grounding surface 5 on the back surface of the face plate portion 4 is grounded to the heat insulating material 16 and the spacer 1 is used. When the spacer 1 is used by grounding the grounding surface 3 of the projecting leading end surface 2a of the bent portion 2 to the heat insulating material 16, the air passage from the portion of the heat insulating material 16 where the grounded surface 3 of the bent portion 2 is not grounded. 17, that is, the spacer 1 can be used upside down, and when the grounding surface 3 of the protruding portion 2 is grounded to the heat insulating material 16 and the spacer 1 is used, Since the groove portion 7 provided in the projecting portion 2 opens to the projecting tip surface 2 a that contacts the heat insulating material 16, moisture also enters the air passage 17 through the groove portion 7 from the heat insulating material 16 at the portion where the projecting portion 2 contacts the ground. It is possible to release, and a decrease in the moisture release performance of the heat insulating material 16 can be avoided In addition, since the groove portion 7 having both ends opened on the side peripheral surface 2b of the bent portion 2 is provided in the bent portion 2, a ventilation channel through the bent portion 2 can be secured. A decrease in the ventilation efficiency of the ventilation path 17 can be avoided.

  Further, the spacer according to claim 2 is provided with a leg portion 8 projecting to the back surface side at the central portion of the bent portion 2 according to claim 1, and the back surface of the projecting tip of the leg portion 8 is connected to the face plate portion 4. It is characterized in that the grounding surface 9 is grounded to either the heat insulating material 16 to be grounded to the grounding surface 5 or the exterior material 18. Thereby, the rigidity strength of the projecting portion 2 can be improved, and the air passage 17 having a predetermined width can be stably secured.

  Further, the spacer according to claim 3 is a bent portion back surface space 11 that communicates the bent portion back surface space 10 surrounded by the back surface of the bent portion 2 and the through hole 6 of the face plate portion 4 in claim 1. Is formed. Thus, when the spacer 1 is used with the grounding surface 5 on the back surface of the face plate portion 4 grounded to the heat insulating material 16, moisture is transferred from the heat insulating material 16 located behind the curved portion 2 into the curved portion back surface space 10. Even if the moisture is released, this moisture can be passed through the bent portion back surface space 11 and the through-hole 6 to the air passage 17 in this order, that is, the lowering of the moisture release performance of the heat insulating material 16 can be further avoided. .

  In the present invention, even if the spacer is used regardless of the direction of the front and back, the moisture can be released from the heat insulating material to the air passage so that the spacer can be used upside down, and the back surface of the face plate portion is used as the heat insulating material. Even when using a spacer with grounding, it is possible to release heat from the heat insulating material to the moisture ventilation path through the groove provided in the bent portion, and to prevent a decrease in the moisture release performance of the heat insulating material. Is opened on the side peripheral surface of the bent portion, so that there is an advantage that it is possible to secure a ventilation flow path through the bent portion that can hinder the ventilation of the ventilation path and avoid a decrease in ventilation efficiency of the ventilation path. .

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  As shown in FIG. 1 and FIG. 2, the spacer 1 of this example is a synthetic resin sheet material 1a formed by unevenness by vacuum forming, and the sheet material 1a is bent to the surface side. A large number of bent portions 2 having a protruding shape on the front surface and a concave shape on the back surface are provided, and each bent portion 2 is arranged in rows and columns at predetermined intervals in the vertical and horizontal directions of the sheet material 1a. Yes. In this example, the projecting portion 2 has a truncated cone shape. Moreover, the remaining part of the said curved part 2 in the sheet | seat material 1a is made into the flat faceplate part 4, and the site | part between the four curved parts 2 adjacent to the vertical and horizontal among this faceplate part 4 is each on the front and back. A penetrating through hole 6 is formed. The back surface of the face plate portion 4 is a grounding surface 5 that is grounded to either the heat insulating material 16 or the exterior material 18 so that the spacer 1 described later is in use.

  Here, the protruding tip surface 2a of the bent portion 2 is formed on a flat surface parallel to the face plate portion 4, and the surface of the protruding tip surface 2a of the bent portion 2 is in a use state of the spacer 1 described later. As described above, the grounding surface 3 is grounded to either the heat insulating material 16 or the exterior material 18 (either the heat insulating material 16 or the exterior material 18 on the back surface of the face plate portion 4 which is not grounded). . And the leg part 8 protruded in the back surface side is provided in the center part of the curved part 2 by planar view. The leg portion 8 is formed by bending the sheet material 1a itself from the protruding tip end surface 2a of the bent portion 2 to the back side to have a concave shape on the front side and a protruding shape on the back side. It is formed so as to be located in the same plane as the back surface of the face plate portion 4, and the back surface of the projecting tip of the leg portion 8 is either the heat insulating material 16 or the exterior material 18 (the ground contact surface 5 on the back surface of the face plate portion 4. The grounding surface 9 is grounded to either the heat insulating material 16 or the exterior material 18 that is grounded. That is, according to the leg portion 8, the rigidity of the bent portion 2 is reinforced.

  Further, the protruding portion 2 is provided with a groove portion 7 that is recessed from the protruding front end surface 2a to the back surface side. The groove portion 7 is formed into a groove shape in which the sheet material 1a itself is bent from the protruding front end surface 2a of the bent portion 2 to the rear surface side so that the front surface is concave and the rear surface has a protruding shape and opens to the protruding front end surface 2a. The both end portions are formed to be opened in the side peripheral surface 2b of the bent portion 2 rising from the face plate portion 4, respectively. In this example, the groove portion 7 has a groove depth that is substantially half of the protruding height of the curved portion 2 from the face plate portion 4, and the longitudinal direction and the lateral direction in which the curved portions 2 are arranged are respectively. It is formed so as to penetrate the bent portion 2 and is formed so as to be orthogonal to each other in a state where each groove portion 7 communicates with the central portion of the bent portion 2 where the leg portion 8 is formed. That is, each groove part 7 formed in the curved part 2 is located on the same line as the groove part 7 of each curved part 2 adjacent in the vertical direction and the horizontal direction so as to lie in the vertical direction and the horizontal direction of the spacer 1, respectively. Is formed. Here, the groove portion 7 formed by bending the sheet material 1a itself can impart a rib effect to the bent portion 2, that is, the rigidity of the bent portion 2 is reinforced. Furthermore, since the leg portion 8 having the ground contact surface 9 is provided at the orthogonal portion of the two groove portions 7 of the bent portion 2, each groove portion 7 for reinforcing the rigidity of the bent portion 2 is thermally insulated via the leg portion 8. Either the material 16 or the exterior material 18 can be supported, and the rigidity reinforcement of the projecting portion 2 is effectively achieved.

  A bent portion back surface space 10 is formed on the back side of the bent portion 2 and is a space surrounded by the side peripheral surface 2b of the bent portion 2 and opened to the back side. A bent portion back surface space 11 is formed to communicate 10 with the through hole 6. Further, in this example, the bent portion ventilation path 12 that connects the bent portion back surface spaces 10 of the adjacent bent portions 2 is formed, and the through hole ventilation path 13 that connects the adjacent through holes 6 is formed. Is formed. In any of the ventilation paths, the sheet material 1a itself is bent to the front surface side, and the front surface has a protruding shape and the back surface has a concave shape and is formed in a groove shape that opens to the back surface side. Each of the bent ventilation paths can give a rib effect to the spacer 1 and is stiffened. Specifically, the through-hole ventilation path 13 is formed in the face plate portion 4, and the bent portion back surface space 11 and the bent portion ventilation path 12 are provided not only on the face plate portion 4 but also on the side peripheral surface 2 b of the bent portion 2. Is also formed. Thus, according to the bent portion back surface space 11 and the bent portion ventilation path 12, the rigidity of the side peripheral surface 2b of the bent portion 2 is reinforced. Further, in the spacer 1 of this example, four through holes 6 are positioned adjacent to each other in the circumferential direction of one protruding portion 2 (the protruding portions 2 and the through holes 6 are arranged in a staggered arrangement). Therefore, the bent portion back space 11 is formed at four equally spaced intervals in the circumferential direction of the bent portion 2 so as to communicate between the bent portion 2 and each adjacent through hole 6. ing. Further, the through-hole ventilation path 13 is formed in the face plate portion 4 so as to communicate the through-holes 6 adjacent to each other in the vertical direction of the spacer 1, and the through-hole ventilation path 13 is adjacent to the lateral direction of the spacer 1. The bent portion back surface spaces 10 of the bent portion 2 are orthogonal to each other in a state of communicating with the bent portion ventilation passage 12 that communicates with each other.

  The spacer 1 having the above-described configuration is used to secure a predetermined width in the air passage 17 provided in the wall body 14, and when the spacer 1 is used, the outer wall structure as shown in FIGS. 3 to 5 is configured. .

  As shown in FIG. 3, the lower and upper floor walls 14 constituting the outer wall of the building are formed by sequentially providing an interior material 15, a heat insulating material 16, a ventilation path 17, and an exterior material 18 from the indoor side. In this wall body 14, for example, a gas-permeable interior base material 15a such as particle board or styrene foam board is interposed between the interior material 15 made of, for example, gypsum board and the heat insulating material 16. However, for convenience, the interior base material 15a and the interior material 15 are referred to. Further, specifically, the wall body 14 is configured such that pillar members 20 are erected at appropriate intervals in the horizontal direction, an interior material 15 is fixed on the indoor side of the pillar member 20, and a heat insulating material 16 is provided between the pillar members 20. Disposed, the crosspiece 21 is fixed to the outdoor side of the pillar member 20 and the exterior member 18 is fixed to the outdoor side of the crosspiece 21, and a space is formed between the exterior member 18 and the heat insulating material 16, This space is a ventilation path 17. The air passage 17 extends above and below the wall body 14 and communicates with the upper and lower walls of the building on the lower floor, the middle floor, and the upper floor as shown in FIG. In this case, the outside air is ventilated and ventilated, and the moisture contained in the heat insulating material 16 is released to the outside air, thereby preventing moisture from staying in the wall body 14. The outer wall 14 of the middle floor is configured by arranging a curtain 18a as an exterior material 18 through a space serving as a ventilation path 17 on a heat insulating material 16 disposed on the outdoor side of the beam member 22 of the building frame. ing. As the heat insulating material 16 of any wall 14, rock wool or the like having no self-holding property is often used. In this case, the rock wool constituting the heat insulating material 16 hangs down in the air passage 17 by gravity. There is a risk that the air passage 17 may be blocked by deformation. Therefore, by interposing the spacer 1 between the heat insulating material 16 and the exterior material 18 (that is, disposing the spacer 1 in the air passage 17), the heat insulating material 16 is prevented from being deformed and the air passage 17 having a predetermined width. Can be obtained (the spacers 1 are respectively disposed in the regions surrounded by the one-dot chain line in FIG. 3).

  Specifically, in FIG. 4, the spacer 1 grounds the grounding surface 5 on the back surface of the face plate portion 4 and the grounding surface 9 on the back surface of the projecting tip of the leg portion 8 to the heat insulating material 16, and also projects the protruding portion 2. The grounding surface 3 of the front end surface 2a is disposed in the air passage 17 in a state where the grounding surface 3 is grounded to the exterior member 18, and has a width equivalent to the protruding height of the bent portion 2 of the spacer 1 from the face plate portion 4. An air passage 17 is obtained. In this case, the surface of the heat insulating material 16 facing the air passage 17 is covered by the back surface of the spacer 1, and the portion of the heat insulating material 16 covered by the back surface of the face plate portion 4 of the spacer 1 is as shown in FIG. Moisture contained in the heat insulating material 16 can be released to the air passage 17 through the through hole 6 of the face plate portion 4 of the spacer 1 (arrow D), and on the back surface of the bent portion 2 of the spacer 1. As shown in FIG. 4B, the moisture contained in the heat insulating material 16 is once released into the bent portion back surface space 10 as shown in FIG. 4B, and the bent portion back surface space 11 and the bent portion ventilation passage 12. Through the through hole 6 to the ventilation path 17 (arrow E). More specifically, in a portion of the heat insulating material 16 covered by the back surface of the face plate portion 4 of the spacer 1 where the through hole 6 does not exist, moisture contained in the heat insulating material 16 penetrates through the through hole ventilation passage 13. It is made possible to discharge from the hole 6 to the ventilation path 17 (arrow F in FIG. 4B). In this way, moisture release from the heat insulating material 16 to the ventilation path 17 is ensured. By the way, according to the arrangement of the spacer 1 in the air passage 17 from the beginning, the portion (the projecting portion 2) passed to the air passage 17 narrows the air passage of the air passage 17. Since the groove portion 7 having both ends opened to the air passage 17 is provided in the bent portion 2 in the example, the outside air flowing through the bent portion 2 through the groove portion 7 and flowing into the air passage 17 can be flowed. (Arrow G in FIG. 4B), that is, the groove portion 7 constitutes a part of the air passage 17 passing through the bent portion 2, so that the air passage of the air passage 17 is not narrowed as much as possible. Has been. Thus, in this example, a ventilation channel through the bent portion 2 that can hinder ventilation of the ventilation channel 17 can be secured in the ventilation channel 17, and a reduction in ventilation efficiency of the ventilation channel 17 is avoided as much as possible. It is.

  Further, in FIG. 5, the spacer 1 grounds the grounding surface 5 on the back surface of the face plate portion 4 and the grounding surface 9 on the back surface of the projecting tip of the leg 8 to the exterior member 18, and the projecting tip surface of the projecting portion 2. The grounding surface 3a of the spacer 2a is grounded to the heat insulating material 16 and is disposed in the ventilation path 17, and the ventilation path has the same width as the protrusion height of the protruding portion 2 of the spacer 1 from the face plate portion 4. I try to get 17. In this case, in the portion of the heat insulating material 16 where the ground contact surface 3 of the bent portion 2 is not grounded, the moisture contained in the heat insulating material 16 can be released as it is to the air passage 17 (arrow H). In the portion of the heat insulating material 16 that the ground contact surface 3 contacts, moisture contained in the heat insulating material 16 can be discharged to the air passage 17 through the groove portion 7 provided in the projecting portion 2 (arrow I). That is, in this example, moisture release from the portion of the heat insulating material 16 to which the ground contact surface 3 of the curved portion 2 contacts the ground, which was impossible with the spacer 1 ′ shown in the prior art example, is ensured. However, not only the moisture release from the heat insulating material 16 to the air passage 17 is ensured, but also the moisture release efficiency is improved as compared with the prior art example. Of course, in this example as well, a passage for the outside air flowing through the air passage 17 can be secured by the groove portion 7 penetrating the bent portion 2 that can hinder the air passage of the air passage 17 (arrow J). Is avoided as much as possible.

  As described above, according to the spacer 1 of this example, it is possible to ensure moisture release from the heat insulating material 16 to the air passage 17 regardless of the front and back directions, and to use the air passage 17 of the wall body 14. That is, the spacer 1 of this example can be used upside down, which could not be achieved by the spacer 1 ′ of the prior art. Thus, it is possible to eliminate the mistake of disposing the front and back directions of the spacer 1 in the wrong direction and the situation of reducing the moisture release / ventilation performance of the wall body 14 due to this mistake. Such workability and the yield of the wall body 14 (accuracy of the quality of the completed wall body 14) can be significantly improved.

  As shown in FIG. 3, the spacer 1 of this example can be used for the wall body 14 in which only the upper end of the air passage 17 is open to the outside and the air in the air passage 17 can be ventilated by natural convection. Needless to say, although not shown, the wall 14 of the ventilation wall is configured such that the upper and lower ends of the ventilation path 17 are open to the outside and the outside air introduced from the lower end of the ventilation path 17 is vented upward to allow ventilation. Needless to say, in any case, the advantages described in the outer wall structures of FIGS. 2, 3 and 4 can be provided. Furthermore, although the spacer 1 of this example can be used in an arbitrary portion where a gap with a predetermined width such as the air passage 17 is to be formed, since it has an advantage related to ventilation as described above, the ventilation 1 It is preferable to apply it to the gap for performing the above-mentioned because the advantages relating to the ventilation can be sufficiently exhibited.

  Further, it is preferable that the spacer 1 of this example is not disposed in all portions of the air passage 17 provided in the wall body 14 but only in an appropriate portion of the air passage 17 where necessary. For example, as shown in FIG. 5, a paper tube 19 for passing a wiring such as a commercial power supply line is often embedded in an arbitrary position of the wall body 14. In this case, the heat insulating material 16 is put on the paper tube 19. As shown in FIG. 5B, the portion 16a of the heat insulating material 16 covering the paper tube 19 protrudes into the air passage 17 as compared with the other heat insulating material 16 portions. As shown in FIG. 5A, the spacer 1 is interposed between the portion of the heat insulating material 16 covering the paper tube 19 and the exterior material 18 (the air passage 17), thereby ensuring a predetermined width in the air passage 17 in general. It can be done.

It is a perspective view of the spacer of the example of an embodiment of the invention. 2A is a rear view, FIG. 2B is a cross-sectional view taken along the line AA in FIG. 2A, and FIG. 2C is a cross-sectional view taken along the line BB in FIG. It is a figure and (d) is CC sectional view taken on the line of Fig.2 (a). It is an outer wall structure explaining the use condition of a spacer same as the above, (a) is a horizontal sectional view, (b) is a longitudinal sectional view. It is a use form of the spacer same as the above, (a) is a cross-sectional view of the main part of the outer wall structure, and (b) is a cross-sectional view of the main part at another position in the outer wall structure. It is sectional drawing of the principal part of the outer wall structure explaining the other usage pattern of a spacer same as the above. (A) is sectional drawing of the outer wall structure which shows the other usage pattern of a spacer same as the above, (b) is sectional drawing of the same outer wall structure as FIG. 6 (a) at the time of not using a spacer as a comparative example. It is an example of a prior art, (a) is a perspective view of a spacer, (b) is sectional drawing of the outer wall structure using a spacer.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Spacer 1a Sheet | seat material 2 Bending part 2a Projection front end surface 2b Side peripheral surface 3 Grounding surface 4 Face plate part 5 Grounding surface 6 Through hole 7 Groove part 8 Leg part 9 Grounding surface 10 Bending part back space 11 Relief ventilation path 16 Heat insulation Material 17 Ventilation path 18 Exterior material

Claims (3)

  A spacer for securing a predetermined width of air passage between the heat insulating material and the exterior material. The spacer is formed by forming a concavo-convex shape by vacuum forming on the synthetic resin sheet material. The sheet material itself is bent to the front surface side to project a curved portion having a protruding shape on the front surface and a concave shape on the back surface, and the protruding front end surface of the protruding portion is made of a heat insulating material or an exterior material. The back surface of the flat face plate portion, which is the remaining portion of the bent portion of the sheet material, is used as a ground surface to be grounded to either the heat insulating material or the exterior material. Forming a through-hole penetrating through the projection, and forming a groove that is recessed from the protruding tip surface of the bent portion to the back surface to open the protruding tip surface. It is characterized by opening each to the peripheral surface Pacer.   Provided with a leg part projecting to the back side at the center part of the bent part, and a grounding surface for grounding to either the heat insulating material or the exterior material for grounding the back surface of the projecting tip of the leg part to the grounding surface of the plate surface part The spacer according to claim 1.   The spacer according to claim 1, wherein an escape ventilation path is formed to connect the bent portion back surface space surrounded by the back surface of the bent portion and the through hole of the sheet surface portion.

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