JP2017048601A - Fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixture of a solar cell panel capable of reducing mounting steps.SOLUTION: A drill screw 100 for mounting a solar cell panel 200, includes: a male screw part 101 that is screwed into a sheathing roof board 303; a cutting part 102 for drilling a roofing material 301 and the sheathing roof board 303; and a sealing part 103 of a sealant disposed on the outer periphery of the male screw part 101, which softens due to dynamic friction between the roofing material 301 and the male screw part and re-hardens after the dynamic friction has ended.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fixture for attaching a solar cell panel to a roof.

  In the case of a general wooden building, a wooden board called a field board is laid on the roof part, and a waterproof underlaying material is attached to the surface. A roof covering material such as a slate tile is arranged on the lower covering material. When a solar cell panel is attached to the roof in the wooden structure as described above, the solar cell panel is fixed by drilling a pilot hole in the roof covering material and screwing a wood screw or driving a nail.

  In such a case, since a through hole is formed in the roof roof material and a hole is also formed in the lower roof material, it is necessary to prevent rainwater or the like from reaching the base plate through the through hole. This is to prevent the fixing of the solar cell panel from becoming weak due to the rotting of the field board by rainwater.

  In the conventional construction method, in order to ensure waterproofness, after providing a lower hole in the roof covering material, a sealing material is applied so as to fill the lower hole, and then a screw is screwed.

  Further, Patent Document 1 discloses that an uncured sealing material is applied in a lump to the opening of the lower hole provided in the roof roof material and the periphery thereof, and the sealing material is screwed when the screw is inserted into the lower hole. A technique for sealing between a screw and a base plate by attaching to the tip of the wire is described.

International Publication No. 2012/096344

  However, in the conventional construction method, a process of providing a pilot hole in the roof covering material and injecting a sealing material into the pilot hole is required. In addition, such a process is performed on the roof, and it is necessary to lift a drill for providing a pilot hole in the roof covering material, a sealing gun for injecting a sealing material, and the like to the roof. For these reasons, there is a need for a simplified method for attaching the solar cell panel to the roof.

  A fixing device according to an aspect of the present invention is a fixing device for attaching a solar cell panel to a roofing material disposed on a field board, and includes a male screw part that is screwed to the field board, and a tip of the male screw part And a sealing part that is disposed on the outer periphery of the external thread part and is softened by dynamic friction with the roofing material and re-hardened after the dynamic friction is finished. A sealing portion made of a material, and a head having a larger diameter than the male screw portion, which is disposed on the base end side of the male screw portion and engages with the solar cell panel to fix the solar cell panel.

  Further, a fixture according to another aspect of the present invention is a fixture for attaching a solar cell panel to a roofing material disposed on a field board, and includes a vessel-shaped vessel portion having a bottom, and the vessel Softened by dynamic friction between the insertion hole penetrating the bottom portion of the portion, the container portion in a filled state, and at least one of the roof covering material and the field plate, and the screw member inserted through the insertion hole And a sealing portion made of a sealing material that re-hardens after the dynamic friction is completed.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to abbreviate | omit the process of opening a pilot hole and the process of apply | coating a sealing material among the processes for attaching a solar cell panel to a roof.

FIG. 1 is a side view showing a drill screw according to an embodiment. FIG. 2 is a perspective view showing a solar cell panel mounted on the roof according to the embodiment. FIG. 3 is a perspective view showing a mounting portion in a state where a part of the solar cell panel according to the embodiment is cut away. FIG. 4 is a cross-sectional view showing a state in which a fixture for attaching the solar cell panel according to the embodiment is attached to the roof with a drill screw. FIG. 5 is a perspective view showing a state in which the fixture according to the embodiment is attached to the roof gutter with a drill screw. FIG. 6 is a perspective view showing a metal fitting according to another embodiment from below. FIG. 7 is a side view showing a cross-section of a metal fitting according to another embodiment. FIG. 8: is a perspective view which shows the state which attaches the fixture which concerns on other embodiment to a roof covering material with a screw member via a metal fitting.

  Below, the fixture concerning embodiment of this invention is demonstrated in detail using drawing. Note that each of the embodiments described below shows a preferred specific example of the present invention. Therefore, the numerical values, shapes, materials, components, arrangement of components, connection forms, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept of the present invention are described as optional constituent elements.

  Each figure is a mimetic diagram and is not necessarily illustrated strictly. Moreover, in each figure, the same code | symbol is attached | subjected about the same structural member.

(Embodiment 1)
Hereinafter, a drill screw which is one embodiment of a fixing tool for attaching a solar cell panel to a roof covering material will be described with reference to the drawings.

[Composition of drill screw]
FIG. 1 is a side view showing a drill screw.

  As shown in the figure, the drill screw 100 includes a male screw portion 101, a cutting portion 102, a sealing portion 103, and a head portion 104. In the case of the present embodiment, the drill screw 100 includes a washer 105 with packing.

  The male screw portion 101 is a portion that is screwed to the base plate. In the present embodiment, the male screw portion 101 functions as a tapping screw. Specifically, by rotating the drill screw 100 with an electric tool or the like, a hole having a size through which the male screw portion 101 can pass can be provided in the roof covering material. Further, the male screw portion 101 and the base plate are engaged with each other, so that it is possible to enter the back of the base plate while forming the female screw on the base plate.

  The cutting part 102 is a part of the blade arranged at the tip of the male screw part 101, and the cutting part 102 opens a hole in the roofing material or the base plate like a drill by rotating the drill screw 100 with an electric tool or the like. The part that can be. Due to the presence of the cutting part 102, without using a drill or the like in the roof covering material in advance, tapping with a male thread part while drilling a hole in the roof covering material, penetrating the roof covering material in a single process to the base plate The drill screw 100 can be screwed in.

  In the case of the present embodiment, the outer diameter of the cutting portion 102, that is, the outer diameter (nominal diameter) of the maximum portion of the cutting portion 102 is smaller than the outer diameter (nominal diameter) of the male screw portion 101.

  As a result, the tapping is performed while the male screw portion 101 rubs strongly against the hole provided in the roofing material at the cutting portion 102, so that at least one of high heat due to dynamic friction and high pressure can be generated. It becomes possible to promote softening of the sealing material forming the portion 103.

  As an example, a drill screw 100 having an external shape (nominal diameter) of the male screw portion 101 of 5 mm to 6 mm and an external shape (nominal diameter) of the cutting portion 102 of 3 mm to 5 mm can be exemplified.

  The sealing portion 103 is a cylindrical member disposed on the outer periphery of the male screw portion 101 and is solid before the drill screw 100 is used.

  The sealing material constituting the sealing portion 103 is not particularly limited as long as it is solid in a normal state and softens and cures again when given with at least one of heat and pressure. For example, a thermoplastic resin can be listed as the one whose state is changed by heat. Specific examples of the thermoplastic resin include vinyl polymers such as polyethylene, polypropylene, polystyrene, and polyvinyl chloride, linear polymers such as condensation polymers such as polyester and polyamide, and fluororesins.

  The sealing material includes the first material and the second material, and the first material and the second material react based on at least one of heat and dynamic pressure generated when the solar cell panel is attached. It does not matter if it softens.

  Further, the second material is sealed in a bag body, and is based on at least one of heat due to dynamic friction and pressure generated when a hole is formed in the roof covering material with the drill screw 100 and the drill screw 100 is screwed into the base plate. The bag body may be broken and softened by the reaction between the first material and the second material.

  For example, the first agent constituting the sealing material is a resin serving as a base. On the other hand, the second agent enclosed in the bag is a solvent that softens the first agent. The bag body that accommodates the second material is in the form of a minute capsule and is disposed in a dispersed state in the first agent. Such a sealing material can be exemplified.

  The head 104 is disposed on the base end side of the male screw portion 101, is a portion that engages with the solar cell panel and fixes the solar cell panel, and has a larger diameter than the male screw portion 101. In the case of the present embodiment, the head portion 104 is disposed at the proximal end portion of the drill screw 100, and a shaft portion 111 that is not engraved with a screw is disposed between the male screw portion 101 and the head portion 104.

  Further, in the present embodiment, the head 104 has a hexagonal shape that can be held by the power tool, but the shape of the head 104 is not particularly limited. Examples of the shape of the head 104 include a hexagonal hole and a thing having a groove that engages with a plus driver or a minus driver.

  The washer with packing 105 is a member in which, for example, an annular metal washer and an annular rubber packing are arranged in layers, and is engaged with the head 104 while being pierced by the drill screw 100. It is a match.

[Mounted member]
Next, a member to be attached that is attached using a drill screw 100 that is a fixture will be described.

  FIG. 2 is a perspective view showing a solar cell panel mounted on the roof.

  FIG. 3 is a perspective view showing an attachment portion in a state where a part of the solar cell panel is cut away.

  In addition, the solar cell panel etc. which are shown in the figure are shown simply, and do not show an actual shape.

  As shown in these drawings, the solar cell panel 200 is a device that is attached to the roof of a wooden house 300 and generates electric power based on sunlight, and the roof of the house 300 by a drill screw 100 via a fixture 202. It is fixed to.

  The house 300 is a general building in which a roof covering material 301 is provided on the roof. In the present embodiment, a slate tile is used as the roof covering material 301. In addition, the kind of roof covering material 301 is not limited to a slate tile, Arbitrary members, such as a tile and a Galvalume steel plate, can be employ | adopted.

  The solar cell panel 200 is a panel-like solar cell that generates electric power based on received sunlight. Specifically, for example, the solar cell panel 200 is configured by arranging solar cell cells made of semiconductors in a matrix and sandwiching the cell array with resin or glass to form a plate.

  As shown in FIG. 3, the fixture 202 is a member that is fixed on the roof covering member 301 by the drill screw 100 and attaches the solar cell panel 200 onto the roof covering member 301 via the attachment rail 204. In the case of the present embodiment, the attachment 202 is simply shown, but the shape and structure are not particularly limited, and can be arbitrarily selected depending on the type of the solar cell panel 200 to be attached.

  FIG. 4 is a cross-sectional view showing a state in which an attachment for attaching the solar cell panel is attached to the roof with a drill screw.

  As shown in the figure, the drill screw 100 fixes a fixture 202 for attaching the solar cell panel 200 to a roof covering member 301 disposed on a field base plate 303 covered with a waterproof lower covering member 302.

  In general, the roof covering material 301 is arranged in order from the bottom to the top while overlapping a part, and there are a two-layered part and a three-layered part, but as shown in FIG. It is recommended that the fixture 202 be attached to the overlapped portion. In addition, an inclined gap (space) is generated between the field board 303 and the roof covering material 301.

  Here, the field board 303 is a wooden board that is a base for spreading the roof covering material 301 on the roof, and is a board stretched on the rafter.

  In addition, the lower roof material 302 is a member called roofing or the like, and is a sheet-like member that is attached to the base plate 303 for the purpose of waterproofing prior to the construction of the roof roof material. The kind of the lower brazing material 302 is not particularly limited, but asphalt roofing (felt-like base paper in which asphalt is infiltrated and coated, and steel material powder is attached to the front and back surfaces), modified asphalt type, butyl rubber type The thing etc. can be illustrated.

[installation method]
FIG. 5 is a perspective view showing a state in which the fixture is attached to the roofing material with a drill screw.

  First, a drill screw 100 before use in which a solid sealing portion 103 is attached around the male screw portion 101 is prepared.

  Here, “before use” means a state in which no dynamic friction is generated between the drill screw 100 and the roof covering material 301 and the sealing portion 103 has never been softened. Further, in a state before use, the sealing portion 103 is not softened and maintained in an individual state depending on the temperature at which the drill screw 100 is stored, the vibration at the time of transportation, and the like. ing.

  Next, the head 104 of the drill screw 100 is attached to an electric tool or the like, and the entire drill screw 100 including the sealing portion 103 is rotated, and a predetermined part of the roof covering material 301 is passed through the through-hole 203 previously opened in the fixture 202. The tip of the cutting part 102 of the drill screw 100 is applied to the position. As a result, holes are opened in the roof covering material 301. Note that the through-hole 203 of the fixture 202 is sufficiently large with respect to the outer shape of the drill screw 100, and almost no dynamic friction occurs between the fixture 202 and the drill screw 100.

  Next, when the roof covering material 301 is dug by the cutting portion 102, the male screw portion 101 and the roof covering material 301 come into contact with each other, and the drill screw 100 further advances while the male screw portion 101 taps the roof covering material 301.

  Here, since the outer shape of the cutting portion 102 is smaller than the outer shape of the male screw portion 101, the male screw portion 101 rubs strongly against the hole provided by the cutting portion 102. Softening of the sealing portion 103 is started by at least one of temperature and pressure due to dynamic friction generated at this time.

  Next, when the cutting part 102 penetrates the roof gutter material 301 and reaches the lower gutter material 302 (see FIG. 4), the cutting part 102 penetrates the lower gutter material 302 and further opens a hole in the base plate 303.

  Here, the softened sealing portion 103 flows between the roof covering material 301 having a hole and the drill screw 100 and flows down along the drill screw 100 in the space between the roof covering material 301 and the base plate 303. To go. This is because the roof gutter 301 is a relatively hard member, and a slight gap is generated between the roof gutter 301 and the male thread 101 by tapping the male thread 101, and this gap is maintained. is there.

  Next, when the male screw portion 101 reaches the base plate 303, the male screw portion 101 advances to the back while tapping the base plate 303.

  On the other hand, the softened sealing portion 103 does not enter between the drill screw 100 and the field plate 303 even if the drill screw 100 advances to the depth of the field plate 303, and the space between the roof covering material 301 and the field plate 303 is not. Stays on. This is because the base plate 303 is made of wood and is softer and more resilient than the roof covering material 301. Therefore, when the male screw portion 101 enters the base plate 303, the base plate 303 bites into the male screw portion 101 firmly. This is based on the fact that there is no gap between the base plate 303 and the male screw portion 101 into which the softened sealing portion 103 enters. This finding was first discovered by the inventor.

  Next, when the male screw portion 101 is screwed into the base plate 303 by a predetermined length, the fixture 202 is attached to the surface of the roof gutter 301 in a state where the fixture 202 is pressed against the roof gutter 301 by the head 104.

  On the other hand, the space between the lower brazing material 302 and the drill screw 100 is sealed by the softened sealing portion 103. The lower brace material 302 may be turned up when the male screw portion 101 is screwed in, but the sealing portion 103 is formed between the drill screw 100 and the lower brace material 302 so as to cover the part of the turned up lower brace material 302. Seal the gap.

  In addition, the softened sealing portion 103 is re-cured after a predetermined time has passed, whereby the waterproofness around the field plate 303 into which the drill screw 100 is screwed can be maintained in a high state.

  Next, the solar cell panel 200 is attached to the roof of the house 300 by holding the frame of the solar cell panel 200 on the fixture 202 using the fixture 202 attached on the roof covering material 301.

  As described above, by using the drill screw 100, the attachment member 202 can be attached to the roof covering member 301 in one step without providing a prepared hole in the roof covering member 301 and without separately applying a sealing material to the lower hole. Further, it is possible to secure the waterproofness of the portion where the drill screw 100 is screwed. Therefore, it becomes possible to reduce the labor of construction when attaching the solar cell panel 200 to the roof of the house 300.

  Further, in the case of the present embodiment, as shown in FIG. 4, since the upper end portion of the through hole 203 of the fixture 202 is sealed by the washer 105 with packing, the head 104 of the drill screw 100 is passed to the through hole 203. It becomes possible to suppress the intrusion of water as much as possible, and to further improve the waterproof performance.

(Embodiment 2)
Next, a metal fitting, which is another embodiment of a fixture for attaching the solar cell panel to the roofing material, will be described with reference to the drawings. In addition, the same code | symbol may be attached | subjected to what has the effect | action and function similar to the said Embodiment 1, and the same shape, mechanism, and structure (part) may be abbreviate | omitted. In the following description, differences from the first embodiment will be mainly described, and description of the same contents may be omitted.

[Fitting configuration]
FIG. 6 is a perspective view showing the metal fitting from below.

  FIG. 7 is a side view showing the metal fitting in cross section.

  As shown in these drawings, the metal fitting 190 is a washer made of a metal such as iron, and includes a vessel portion 191, an insertion hole 192, and a sealing portion 103. In the present embodiment, the metal fitting 190 includes a flange portion 193.

  The vessel portion 191 is a vessel-shaped portion having a plate-like bottom portion 194.

  The insertion hole 192 is a hole that penetrates the center portion of the bottom portion 194 in the thickness direction of the bottom portion 194.

  The flange portion 193 is a plate-like portion that extends outward from the edge of the vessel portion 191 opposite to the bottom portion 194.

  These bottom part 194, container part 191, insertion hole 192, and flange part 193 are formed from one sheet metal by press working.

  The sealing portion 103 is filled inside the vessel portion 191 and is softened by dynamic friction between at least one of the roof covering material and the field plate and a screw member (described later) inserted through the insertion hole. It is a member made of a sealing material that is re-cured after completion of the process. In addition, the kind of sealing material which comprises the sealing part 103, etc. are the same as that of the above.

[installation method]
FIG. 8 is a perspective view showing a state in which the fixture is attached to the roof covering material with a screw member via a metal fitting.

  First, the metal fitting 190 before use and the screw member 290 are prepared.

  In the case of the present embodiment, the screw member 290 is a cutting portion that is a male screw portion 291 that is pierced through the insertion hole 192 of the metal fitting 190 and is screwed into the base plate 303, and a blade portion that is disposed at the tip of the male screw portion 291. A portion 292 and a head portion 294 that is disposed on the base end side of the male screw portion 291 and engages with the bottom portion 194 of the metal fitting 190 are provided. Further, the outer diameter (nominal diameter) of the cutting part 292 is smaller than the outer diameter (nominal diameter) of the male screw part 291.

  Here, before use, the screw member 290 pierced through the insertion hole 192 of the metal fitting 190 is in a state in which no dynamic friction is generated between the roof covering material 301 and the like, that is, the sealing portion 103 has been softened once. It means no state. In addition, in a state before use, the sealing portion 103 is not softened and is maintained in an individual state depending on the temperature at which the metal fitting 190 is stored, vibration at the time of transportation, and the like. Yes.

  Next, the flange portion 193 of the metal fitting 190 is brought into contact with the surface of the fixture 202, and the insertion hole 192 of the metal fitting 190 and the through hole 203 of the fixture 202 are arranged coaxially. Then, the head portion 294 of the screw member 290 is attached to an electric tool or the like and rotated, pierced through the insertion hole 192 provided in the bottom portion 194 of the metal fitting 190, and the cutting portion 292 of the screw member 290 at a predetermined position of the roof covering member 301. Hit the tip of. As a result, holes are opened in the roof covering material 301.

  Next, when the roof gutter 301 is dug by the cutting part 292, the male screw part 291 and the roof gutter 301 come into contact with each other, and the screw member 290 further advances while the male screw part 291 taps the roof gutter 301.

  Here, since the outer shape of the cutting portion 292 is smaller than the outer shape of the male screw portion 291, the male screw portion 291 rubs strongly against the hole provided by the cutting portion 292. Softening of the sealing portion 103 filled in the container portion 191 of the metal fitting 190 is started by at least one of temperature and pressure due to dynamic friction generated at this time.

  Next, when the cutting part 292 penetrates the roof gutter material 301 and reaches the lower gutter material 302, the cutting part 292 penetrates the lower gutter material 302 and further opens a hole in the base plate 303.

  Here, the softened sealing portion 103 flows between the roof covering material 301 and the screw member 290 having the holes formed therein, and then flows down into the space between the roof covering material 301 and the base plate 303.

  Next, when the male screw portion 291 reaches the base plate 303, the male screw portion 291 advances to the back while tapping the base plate 303.

  On the other hand, the softened sealing portion 103 does not enter between the screw member 290 and the field plate 303 even if the screw member 290 advances to the depth of the field plate 303, and the space between the roof covering material 301 and the field plate 303. Stays on.

  Next, when the male screw portion 291 is screwed into the field board 303 by a predetermined length, the head portion 294 of the screw member 290 is in a state of pressing the attachment tool 202 against the roof covering material 301 via the metal fitting 190.

  On the other hand, the space between the lower brazing material 302 and the screw member 290 is sealed by the softened sealing portion 103.

  In addition, the sealing portion 103 seals between the screw member 290 and the roof covering material 301, particularly between the valley portion of the male screw portion 291 and the roof covering material 301 (not shown). As a result, it is possible to suppress the penetration of water between the screw member 290 arranged in a penetrating manner in the roof covering material 301 and the roof covering material 301, and to effectively suppress the entry of water into the field board 303. Become.

  When the predetermined time has elapsed, the softened sealing portion 103 is re-cured, thereby improving the waterproofness around the base plate 303 into which the screw member 290 is screwed.

  Next, the solar cell panel 200 is attached to the roof of the house 300 by holding the frame of the solar cell panel 200 on the fixture 202 using the fixture 202 attached on the roof covering material 301.

  As in the present embodiment, by using the metal fitting 190 provided with the sealing portion 103 inside the vessel portion 191, even when the general screw member 290 is used, the roof gutter 301 is not provided with a pilot hole. In addition, it is possible to secure the waterproofness of the portion into which the drill screw 100 is screwed by attaching the fixture 202 to the roof roof material 301 in one step without separately applying a sealing material to the pilot hole. . Therefore, it becomes possible to reduce the labor of construction when attaching the solar cell panel 200 to the roof of the house 300.

  Moreover, since the dust generated when the screw member 290 makes a hole in the roof covering material 301 stops inward of the vessel portion 191, it is possible to eliminate the step of separately removing the dust. Therefore, it becomes possible to attach the solar cell panel 200 more efficiently.

  The present invention is not limited to the above embodiment. For example, another embodiment realized by arbitrarily combining the components described in this specification and excluding some of the components may be used as an embodiment of the present invention. In addition, the present invention includes modifications obtained by making various modifications conceivable by those skilled in the art without departing from the gist of the present invention, that is, the meaning of the words described in the claims. It is.

  For example, although the drill screw 100 provided with the shaft part 111 was illustrated, the drill screw 100 is not limited to this.

  The drill screw 100 may have the same outer shape of the cutting portion 102 and the outer shape of the male screw portion 101.

  In addition, a metal fitting 190 in which the sealing portion 103 is not filled in the vessel portion 191 may be used, and a sealing material may be injected into the vessel portion 191 immediately before the solar cell panel 200 is attached to the roof covering material 301 with the screw member 290.

DESCRIPTION OF SYMBOLS 101 Male thread part 102 Cutting part 103 Sealing part 104 Head part 190 Metal fitting 191 Instrument part 192 Insertion hole 194 Bottom part 200 Solar cell panel 301 Roof frame 303 Base plate

Claims (5)

A fixing tool for attaching a solar cell panel to a roofing material arranged on a field plate,
A male screw part screwed onto the base plate,
A cutting part that is disposed at the tip of the male screw part, and that forms a hole in the roof covering material and the base plate,
A sealing portion that is disposed on an outer periphery of the male screw portion, is made of a sealing material that is softened by dynamic friction between the roof covering material and the male screw portion, and is re-cured after the dynamic friction is finished;
A fixture provided with a head having a diameter larger than that of the male screw portion, which is disposed on the base end side of the male screw portion and engages with the solar cell panel to fix the solar cell panel. The fixing tool according to claim 1, wherein an outer diameter of the cutting portion is smaller than an outer diameter of the male screw portion. A fixing tool for attaching a solar cell panel to a roofing material arranged on a field plate,
A vessel-shaped vessel having a bottom, and
An insertion hole penetrating the bottom of the vessel part;
A sealing portion that is arranged in a filled state in the vessel portion, and is made of a sealing material that is softened by dynamic friction between the roof covering material and a screw member pierced through the insertion hole and re-hardened after the dynamic friction is finished. Fixing tool to be provided. The sealing material includes a first material and a second material, and is softened by the reaction between the first material and the second material based on at least one of heat due to the dynamic friction and pressure due to the dynamic friction. Item 4. The fixture according to any one of Items 1 to 3. The said 2nd material is enclosed with the bag body, The said bag body is destroyed based on at least one of the heat by the said dynamic friction, and the pressure by the said dynamic friction, The said 1st material and the said 2nd material react. 4. The fixture according to 4.

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