JP2012255266A - Water sealing member for joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water sealing member for a joint, which can be installed with reduced construction labor hours and can absorb errors in joint width with suppressed reduction in light-receiving area of a solar panel.SOLUTION: A water sealing member 1 for a joint which seals a joint 2 between neighboring solar panels P and P from water comprises a cover member 10 which covers the joint 2 and an elastic seal member 20 installed between the cover member 10 and the solar panel P. The cover member 10 comprises a surface part 11 which covers the joint 2 and a surfaces 52a of the respective edge ends 52 of the solar panels P located at both sides of the joints 2, and an insertion part 12 which projects from a rear face 11a of the surface part 11 so as to be inserted inside the joint 2. The elastic seal member 20 is in contact with both of the rear face 11a of the surface part 11 and the side face 12a of the insertion part 12, and is pressed by the surface 52a and side face 52b of the edge end 52 of the solar panel P.

Description

  The present invention relates to a joint water-stopping member that stops joints between solar panels.

  Solar panels such as solar power generation panels and solar hot water supply panels are often installed on the roof. When installing the solar panel on the roof, the solar panel is placed on a support frame laid on the roof and fixed by fixing means such as screws. In the case where the joint portion between the arranged solar panels is water-stopped, a molded packing material or a dry water-stop material (see, for example, Patent Document 1) is inserted into the joint, or the joint is filled with an elastic sealing material. The water-stopping property was ensured by covering the joint with a plate-like cover member.

JP-A-10-331366 (paragraph 0009)

  In recent years, the use of solar panels as roofing materials has been studied, and improvement in the water stop performance of joints between solar panels is required. However, in the water-stopping structure in which molded packing material or dry-type waterproofing material is inserted into the joint, the joint width is too narrow to insert the molding packing material due to the installation error of the solar panel, or the joint width is too wide. As a result, there is a problem that the molding packing material may come off. In addition, in the water stop structure in which the joint is filled with an elastic sealing material, there is a problem that a lot of work is required for filling and maintenance such as repair work and partial repair work is difficult. Furthermore, because the joint width varies due to the expansion and contraction of solar panels due to heat and the change in roof behavior including solar panels due to wind pressure, etc., the water stoppage must be maintained for a long time against changes over time. It was difficult.

  Furthermore, in the water stop structure in which the joint portion is covered with the cover member, a seal material is attached between the surface of the solar panel and the lower surface of the cover member. Therefore, there is a problem that the cover member covers the light receiving surface of the solar panel.

  Therefore, the present invention has been made to solve the above-described problems, and can be installed with less construction work, and can prevent joint width variation and error without affecting the light receiving surface of the solar panel. It is an object to provide a water member.

  The present invention for solving the above-described problems is a joint water-stopping member that stops joints between adjacent solar panels, a cover member that covers the joints, and a cover member that is interposed between the cover member and the solar panel. An elastic sealing material provided, and the cover member protrudes from a surface portion covering the surface of each edge portion of the solar panel located on both sides of the joint together with the joint, and a back surface of the surface portion. The elastic sealing material is in contact with both the back surface of the front surface portion and both sides of the side surface of the insertion portion, and the edge portion of the solar panel. A joint water-stopping member that is pressed by a surface and a side surface.

  According to such a configuration, the elastic sealing material is pressed against the back surface of the surface portion of the cover member by the surface of the edge portion of the solar panel, and the insertion portion of the cover member by the side surface of the edge portion of the solar panel. Since it is pressed against the side surface, the seal area is increased and the required sealing performance can be ensured. At this time, since the elastic sealing material is pressed using the side surface of the edge portion of the solar panel, the pressing portion of the elastic sealing material on the surface of the solar panel can be reduced, and the light receiving surface is not affected. Furthermore, the joint water-stopping member can be temporarily fixed on the surface of the solar panel due to the adhesiveness of the elastic sealing material, and does not need to be filled with a sealing material as in the prior art. Since it can be easily fixed, installation and maintenance are reduced. In addition, since the elastic sealing material is also pressed in the width direction of the joint, even if there are some fluctuations or errors in the joint width, it is possible to install the joint water-stopping member and ensure the sealing performance, and absorb the fluctuations and errors can do.

  According to a second aspect of the present invention, the thickness from the surface portion increases from the insertion portion side toward the end portion side of the surface portion in a state before the elastic sealing material is inserted into the joint. It has a tapered surface inclined so as to be thin.

  According to such a configuration, when the joint water-stopping member is pressed to the joint side, the elastic sealing material can easily enter the joint.

  According to the present invention, it can be installed with less construction work, and it can absorb variations and errors in joint width without affecting the light receiving surface of the solar panel.

It is the perspective view which showed the state which installed the solar panel on the roof. It is sectional drawing which showed the installation structure of the joint water stop member and solar panel which concerns on embodiment of this invention. It is sectional drawing which showed the state before mounting | wearing of the joint water stop member which concerns on embodiment of this invention. It is sectional drawing which showed the state which mounted | wore the joint water stop member which concerns on embodiment of this invention with the joint. It is the perspective view which showed the 1st process of installing a solar panel on a roof. It is the perspective view which showed the 2nd process of installing a solar panel on a roof.

  Embodiments of the present invention will be described in detail with reference to the drawings. In this embodiment, a case where a solar panel is installed on a sloped roof will be described as an example.

  As shown in FIG. 1, a plurality of solar panels P are arranged along the gradient direction X of the roof R and the orthogonal direction Y perpendicular to the gradient direction X along the roof surface. In addition, although the solar panel P of this embodiment has illustrated the solar power generation panel provided with the photovoltaic power generation cell 51 (refer FIG. 2) used as a light-receiving surface on the surface, it is not the meaning limited to this. It is good also as a solar hot water panel which obtains warm water with the thermal energy of light, and it is good also as a hybrid solar panel which has the function of a solar power generation panel and a solar hot water panel. Between the solar panels P, P adjacent to each other in the gradient direction X or the orthogonal direction Y, a joint 2 (see FIG. 6) having a predetermined width is formed. The joint water-stopping member 1 according to the present invention is attached to the joint 2. The solar panel P is fixed on a base frame 30 (see FIGS. 2 and 5) laid on the roof R.

  First, the installation structure of the solar panel P will be described, and the configuration of the joint water-stopping member 1 will be described. As shown in FIG. 2, the solar panel P is fixed on the base frame 30 fixed on the support block 43 disposed on the surface material 41 of the roof R. The base frame 30 is disposed extending along the orthogonal direction Y (see FIG. 5). Under the both longitudinal ends of the base frame 30, support blocks 43 are respectively arranged. The base frame 30 is formed by bending a plate made of aluminum or stainless steel, or a steel plate that has been subjected to rust prevention treatment, and has a target shape centering on a middle portion in the width direction. A protrusion 31 that protrudes upward is formed at an intermediate portion in the width direction of the base frame 30. Bolt holes 31a (see partially enlarged views of FIGS. 2 and 5) for fixing the joint water-stopping member 1 are formed on the upper surface of the protrusion 31. The bolt holes 31a are long holes extending in the longitudinal direction of the base frame 30 and are formed at both ends in the longitudinal direction of the base frame 30 (see the partially enlarged view of FIG. 5). On both sides of the ridge 31, support portions 32, 32 are formed which extend to both ends in the width direction and support the solar panel P from below. The solar panel P is placed with the bottom surface of the edge portion 52 in contact with the upper surface of the support portion 32. A groove portion 33 is formed in the support portion 32, and the bottom surface of the groove portion 33 comes into contact with the support block 43 and the base frame 30 is placed thereon. The groove 33 serves as a reinforcing rib. A screw hole 33 a for fixing the base frame 30 to the roof R is formed on the bottom surface of the groove 33. A screw 34 is inserted into the screw hole 33a from above. The screw 34 penetrates the surface material 41 of the roof R, and its tip is screwed to a roof base material 44 such as a rafter.

  As shown in FIGS. 3 and 4, the joint water-stopping member 1 is a member for water-stopping the joint 2, and a cover member 10 that covers the joint 2 and between the cover member 10 and the solar panel P. And an elastic sealing material 20 interposed. The cover member 10 is made of a plate material made of aluminum or stainless steel, or a steel plate subjected to rust prevention treatment. The cover member 10 includes a surface portion 11 and an insertion portion 12. The cover member 10 may be formed by joining the insertion portion 12 to the surface portion 11 or may be integrally formed with an extruded profile. Further, it may be formed by bending one plate.

  The surface portion 11 extends along the joint 2 and is formed in a plate shape. Both ends in the width direction of the surface portion 11 cover the surfaces 52 a and 52 a of the edge portions 52 and 52 of the solar panels P and P on both sides of the joint 2 together with the joint 2. Bolt holes 13 for fixing the joint water-stopping member 1 to the base frame 30 are formed in the surface portion 11. The bolt holes 13 are located at the intermediate portion in the width direction of the surface portion 11 and are formed at both ends in the longitudinal direction of the surface portion 11.

  The insertion portion 12 is a portion that protrudes from the back surface 11 a of the front surface portion 11 and is inserted into the joint 2. The insertion portion 12 is composed of a pair of plates orthogonal to the back surface 11a, and the outer side surface 12a (the surface facing the side surface 52b of the edge 52 of the solar panel P) is spaced from the solar panel P. It is configured to open. The space | interval of the solar panel P and the insertion part 12 is a dimension by which the elastic sealing material 20 is compressed by moderate stress.

  The elastic sealing material 20 is made of rubber or resin having elasticity, and extends along the longitudinal direction of the cover member 10. The elastic sealing material 20 is in contact with both the back surface 11a of the front surface portion 11 of the cover member 10 and the side surface 12a of the insertion portion 12, and is fixed by an adhesive. The elastic sealing material 20 is pressed by the surface 52a and the side surface 52b of the edge 52 of the solar panel P in a state where the joint water-stopping member 1 is mounted on the joint 2 (see FIG. 4). At this time, the elastic sealing material 20 has an L-shaped cross section, and includes a portion along the back surface 11 a of the front surface portion 11 and a portion along the side surface 12 a of the insertion portion 12.

  As shown in FIG. 3, the elastic sealing material 20 is formed with an inclined lower surface in a state before the joint water-stopping member 1 is attached to the joint 2. Specifically, the thickness of the elastic sealing material 20 from the surface portion 11 increases from the insertion portion 12 side (the width direction intermediate portion side of the joint water-stopping member 1) toward the end portion side of the surface portion 11. The tapered surface 21 is inclined so as to be thin. When the joint water-stopping member 1 having such a configuration is inserted into the joint 2, the elastic sealing material 20 is pushed toward the side surface 12 a side of the insertion portion 12 while being pushed by the corner portion 53 of the edge portion 52 of the solar panel P. It is swept away and inserted into the joint 2. The elastic sealing material 20 is finally sandwiched between the back surface 11a of the front surface portion 11 of the cover member 10 and the front surface 52a of the edge portion 52 of the solar panel P, and the cover member 10 The side part 12a of the insertion part 12 and the part which is pinched | interposed and compressed by the side surface 52b of the edge part 52 of the solar panel P will be provided. As a result, the elastic sealing material 20 forms two sealing surfaces: a sealing surface formed in contact with the surface 52a of the edge 52 of the solar panel P and a sealing surface formed in contact with the side surface 52b. It will be.

  Next, with reference to FIG. 5 and FIG. 6, the installation procedure of the solar panel P and the installation procedure of the joint water-stopping member 1 will be described, and the effects of the present invention will be described. As shown in FIG. 5, first, the support block 43 is installed on the roof R, and then the base frame 30 is placed and fixed. The support blocks 43 are installed at both ends in the longitudinal direction of the base frame 30. The foundation frame 30 is sequentially installed from the downstream side of the roof gradient. After fixing the lower base frame 30, the upstream base frame 30 is installed so that the distance from the base frame 30 is a predetermined distance. The predetermined distance between the base frames 30 is set to a length obtained by adding the dimension in the short direction due to thermal expansion to the standard short direction dimension of the solar panel P (the length dimension in the gradient direction X at normal temperature). At this time, the bolt B is inserted from the lower side into the bolt hole 31a of the protrusion 31 of the base frame 30, and the trunk portion is protruded upward (see a partially enlarged view of FIG. 5). Using this bolt B, the joint water-stopping member 1 extending along the base frame 30 is fixed in a later step. On the other hand, in the lowermost and uppermost base frames 30, bolt holes (not shown) are also formed between the base frames 30, 30 adjacent to each other in the orthogonal direction Y, and the bolts are inserted from below. The body portion is projected upward (not shown). Using this bolt, the joint water-stopping member 1 (see FIG. 1) extending in the direction orthogonal to the base frame 30 (gradient direction X) is fixed.

  When the installation of all the base frames 30 is completed, the solar panels P are installed from the downstream side as shown in FIG. The solar panel P is placed by bringing the bottom surfaces of the upper and lower edge portions 52 into contact with the upper surface of the support portion 32, and the lower end surface (side surface 52 b) is brought into contact with the side surface of the protrusion 31 and locked. (See FIG. 2). Here, when the temperature is high, such as in summer, the solar panel P expands to increase the short dimension, and the upper end of the solar panel P is also in contact with or close to the side surface of the ridge 31. . On the other hand, when the temperature is low such as in winter, the solar panel P contracts and the short dimension is reduced, and the upper end surface of the solar panel P is spaced from the side surface of the protrusion 31 ( Not shown). By arranging the solar panels P in this way, there is a joint 2 between the solar panels P and P (solar panels P and P adjacent in the gradient direction X) arranged so as to sandwich the protrusion 31 therebetween. (Hereinafter, sometimes referred to as “horizontal joint 2a”) extends in the orthogonal direction Y. The width of the horizontal joint 2a includes a width obtained by adding a shrinkage dimension in the short direction of the solar panel P due to heat shrinkage to the width dimension of the protrusion 31 from a length substantially equal to the width dimension of the protrusion 31. The dimensions are in the range up to the length.

  When installing the solar panel P in the direction adjacent to the orthogonal direction Y, the new solar panel P is arranged with a predetermined distance from the existing solar panel P and extends in the gradient direction X. Forming joints 2 (hereinafter sometimes referred to as “longitudinal joints 2b”). The joint width (width dimension in the orthogonal direction Y) of the vertical joint 2b is adjusted to the reference longitudinal direction dimension (the length dimension in the orthogonal direction Y at normal temperature) of the solar panel P by the change dimension in the longitudinal direction due to thermal expansion. Length.

  When the installation of the solar panel P is completed, the joint water-stopping member 1 is inserted into the joint 2 as shown in FIG. The joint water-stopping member 1 is installed above the protrusion 31 so that the body of the bolt B protruding from the base frame 30 is inserted into the bolt hole 31a of the protrusion 31. After the joint water-stopping member 1 is pushed into the joint 2 to some extent by hand, a nut N is attached to the bolt B and tightened. The joint water-stopping member 1 is temporarily fixed to the solar panel P by the adhesiveness (frictional force) of the elastic sealing material 20 even before the bolt B and the nut N are fixed. N tightening work is easy. At this time, the elastic sealing material 20 is pressed against the back surface 11a of the surface portion 11 of the cover member 10 by the surface 52a of the edge portion 52 of the solar panel P, and by the side surface 52b of the edge portion 52 of the solar panel P. Since it is pressed against the side surface 12a of the insertion part 12 of the cover member 10, two sealing surfaces can be obtained. As a result, the seal area is increased and the necessary sealing performance can be ensured. At this time, since the elastic sealing material 20 is pressed using the side surface 53b of the edge 52 of the solar panel P, the pressing portion of the elastic sealing material 20 on the surface 52a of the solar panel P can be reduced. Therefore, the area where the cover member 10 covers the surface of the solar panel P can be reduced, and the surface portion 11 does not cover the photovoltaic power generation cell 51, so that the light receiving area does not decrease and the light receiving surface is affected. Don't give.

  Furthermore, since the joint water-stopping member 1 can be easily fixed to the base frame 30 with bolts B and nuts N, it is installed and maintained as compared with the conventional one (particularly one having a structure in which the joint is filled with a sealing material). Less time and effort. In addition, since the elastic sealing material 20 can be pressed and deformed in the width direction of the joint 2, even if there is some error in the joint width, the joint water-stopping member 1 can be installed and the sealing performance can be secured. The error can be absorbed. Furthermore, the joint width varies due to the expansion and contraction of the solar panel due to heat and the behavior change of the roof including the solar panel due to wind pressure, etc., but the deformation of the elastic sealing material 20 can absorb the variation in joint width. The water-stopping property can be maintained for a long time against the change with time.

  Furthermore, since the elastic seal material 20 has the tapered surface 21 in a state before being inserted into the joint 2, the elastic seal material 20 is pressed when the joint water-stopping member 1 is pressed to be inserted into the joint 2. The material 20 can easily enter the joint 2. In other words, the tapered surface 21 is pushed by the corner portion 53 of the edge 52 of the solar panel P, but the elastic sealing material 20 is pushed along the tapered surface 21 so that the side surface of the insertion portion 12 is pressed. It will be pushed away to the side of 12a, and it will become easy to enter into the joint 2. Furthermore, since the elastic sealing material 20 is pressed toward the side surface 12a, it is not only pressed against the back surface 11a of the front surface portion 11 of the cover member 10, but also pressed against the side surface 12a of the insertion portion 12. Therefore, sufficient sealing performance can be ensured.

  Moreover, by providing the insertion part 12 in the surface part 11, the insertion part 12 will play the role of the reinforcing rib of the surface part 11, and it can suppress the deformation | transformation of the cover member 10 which is a long shape.

  In addition, in this embodiment, as shown in FIG. 1, the joint water-stopping member 1 attached to the vertical joint 2b is configured to extend from the upper end to the lower end and pass through one piece, and the horizontal joint 2a. The joint joint water-stopping member 1 to be mounted is disposed for each solar panel P, and both ends thereof are in contact with the side surfaces of the joint joint water-stopping member 1 attached to the vertical joint 2b.

  Finally, as shown in FIG. 2, a cap member 25 that covers the end of the bolt B and the nut N is put on and the periphery of the bolt hole 13 in the surface portion 11 is sealed.

  As mentioned above, although the form for implementing this invention was demonstrated, this invention is not limited to the said embodiment, In the range which does not deviate from the meaning of this invention, a design change is possible suitably. For example, in the said embodiment, although the insertion part 12 of the cover member 10 is comprised with a pair of plate, it is not limited to this, It is good also as a block-shaped integrated object. However, in consideration of the weight of the joint water-stopping member 1, a pair of plates is preferable.

DESCRIPTION OF SYMBOLS 1 Joint water stop member 2 Joint 10 Cover member 11 Front surface part 11a Back surface 12 Insertion part 12a Side surface 20 Elastic sealing material 21 Tapered surface P Solar panel 52 Edge part 52a Surface 52b Side surface

Claims (2)

In joint water-stopping members that stop joints between adjacent solar panels,
A cover member that covers the joint, and an elastic sealing material interposed between the cover member and the solar panel,
The cover member covers the surface of each edge end portion of the solar panel located on both sides of the joint together with the joint, and an insertion portion that protrudes from the back surface of the surface portion and is inserted into the joint. And
The elastic sealing material is in contact with both the back surface of the front surface portion and the side surface of the insertion portion, and is pressed by the surface and the side surface of the edge portion of the solar panel. Element. The elastic sealing material is a tapered surface inclined so that the thickness from the surface portion becomes thinner from the insertion portion side toward the end portion side of the surface portion before being inserted into the joint. The joint water-stopping member according to claim 1, comprising:

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