JP2975508B2 - Solar cell mounting base - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting base for solar cells, and more particularly to a mounting base for mounting solar cells on a roof of a house.

[0002]

2. Description of the Related Art Conventionally, when a solar cell is to be installed on a roof of a house, a cushioning material or the like is first laid on a roof material such as a tile, and a strong frame-like structure is placed thereon. In general, a solar cell module is mounted, or a unit body in which a plurality of solar cell modules are mounted on a frame-like structure in a factory beforehand is lifted by a crane or the like and fixed on a roof.

Further, as a method of preventing the lift of the solar cell itself, a horn-shaped projection is provided on the frame-shaped structure, and a wire is tied to the tip of the projection to pull the wire downward from the horizontal.

[0004] Alternatively, as shown in FIG. 5, a solar cell 12 is mounted on two steel materials (or aluminum-based members) 11 installed on a roof 10, and four solar cells 12 are placed from both ends of the structure.
There is also one that is pulled and fixed by an independent wire 13 of a book.

[0005]

By the way, when a solar cell support of about 3 KW is used, the size of the mount is large, the transportation is not easy, and the weight is large. A crane was required.

On the other hand, if each member is disassembled in order to facilitate transportation and transportation on the roof, there is a drawback that many members are required and the weight becomes large in order to secure the strength of the gantry after assembly. there were.

[0007] When the number of members increases, the number of assembling operations on the roof increases, the construction cost increases, and the cost increases, which hinders the spread of grid-connected solar cell systems. Further, as the number of members increases, the handling description during assembly becomes complicated, and the probability of failure due to assembly errors increases. In addition, in order to withstand the wind pressure strength, the wire must have a diameter of 3 mm or more. However, the work on the roof is difficult because the solid wire is hard and does not bend.

Further, the horn-shaped structure for preventing the solar cell array from rising due to the lift due to the wind does not have a spring property, so that a sufficient tensile fixing force cannot be obtained with respect to long-term wire elongation. Also, four independent wires 13
In the fixing by the method, the tightening of each turnbuckle is different, and an equal tension cannot be obtained.

SUMMARY OF THE INVENTION An object of the present invention is to provide a highly reliable solar cell mounting base that has a small number of members, sufficiently withstands the wind pressure strength, and applies uniform tension to the entire solar cell.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a solar cell mounting base for installing solar cells on a roof of a house, which is installed in parallel with a lateral direction of the roof surface. 2 for mounting the solar cell on the upper surface
And two square pipes that penetrate through holes provided at the ends of the channel steel so as to be orthogonal to the channel steel, and are bent so that both ends are separated from the roof surface. Then, the two square pipes, the both ends on the ridge side of the roof and the both ends on the eaves side of the roof are respectively inserted by wires, and are fixed to the ridge side and the eaves side of the roof, respectively. I do.

[0011]

[Function] Since the wire is inserted into and fixed to the bent end of the square pipe, the wire is pulled downward and fixed from a high position at the end of the square pipe, and the force for constantly pressing the solar cell against the roof surface is increased. work. Therefore, a structure that is resistant to lift due to wind or the like can be realized.

The square pipe has a C-shape and can absorb the elongation of the wire.

Further, conventionally, there was a problem that a strain pressure due to bending action was generated in the solar cell module because the mold steel material and the square pipe were firmly connected with bolts or the like. Since the pipe 2 penetrates the hole provided in the channel steel 1, the pipe 2 has slidability and can reduce distortion of the solar cell module.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing a use state of a solar cell installation base according to one embodiment of the present invention, FIG. 2 is a partially enlarged cross-sectional view of the solar cell installation base of FIG. 1, and FIG. 3 is a further enlarged cross-sectional view of FIG. .

The same functional parts as in the conventional example shown in FIG. 5 are denoted by the same reference numerals. A major feature of this embodiment is that, as shown in FIG. 1, two square pipes 2 having spring properties are provided in a direction orthogonal to the grooved steel 1 installed on the roof 10. The ridge side and the eave side of the roof are connected with wires and pulled and fixed.

Hereinafter, description will be made in accordance with the order of installation.

First, as shown in FIG.
The two channel steels 1 are lifted up and installed in parallel, and the height of the channel steel 1 is set to be the same as the lower dimension in order to improve the stability and the workability of assembling when installed on the roof 10. Or, increase the lower dimension. Also, in consideration of the pulling property and the like, a two- or three-segment type is used so as to have a length of 1 to 2.5 m and a weight of about 10 kg. To connect the divided bodies, a channel steel for connection is further inserted inside the channel steel 1 and connected by several bolts and nuts. Here, the cross-sectional dimension of the channel steel 1 is 50.
Sufficient strength can be obtained with a thickness of up to 80 mm and a thickness of 3 to 5 mm, and the thermal strain can be small even with high heat treatment during hot-dip galvanizing when steel is used.

Next, as shown in FIG. 2 and FIG.
At the end of the channel steel 1, a square pipe 2 having a square diameter of 15 to 25 mm with both ends bent in a direction perpendicular to the channel steel 1 and having a C-shape is attached. In this mounting method, the square pipe 2 is passed through a square hole 3 previously drilled to be larger than the size of the square pipe 2, and after passing through the square pipe 2, several small screws 4 of about 4 mm are attached to the square pipe 2. Prevention. In addition, a round pipe material having an inner diameter of 4 to 6 mm, which penetrates the square pipe 2 and is rounded inside, is press-fitted into the bent end portion of the square pipe 2 so that a stainless wire 5 described later can slide without resistance.

Next, the ridge side and the eave side of the roof 10 at the bending end portions of the two square pipes 2 are connected with two stainless steel stranded wires 5 and pulled and fixed. Further, from the viewpoint of fail-safe, four safety wires (not shown) are provided as auxiliary materials so that the solar cell frame does not fall off the roof 10 even if the wire 5 is cut.

Here, a turn buckle 6 is provided in the middle of the safety wire as shown in FIG. 4. A normal turn buckle is composed of a right-handed screw member and a left-handed screw member together with a base material door. It works by rotating the base material and changing the end size, but it is necessary to process the wire end into a ring shape or use a wire clip or the like to keep the wire at this end . In this embodiment,
A member 7 which serves both as prevention of looseness at the end of the wire 5 and a right-handed screw member (or a left-handed screw member) of the turnbuckle and having a crimping strength equal to or greater than the wire cutting load is used.

As described above, the present embodiment has a structure in which the wire is pulled and fixed from the high position of the bent end of each pipe 2, so that a force for constantly pressing the solar cell toward the roof 10 acts. Therefore, a structure that is resistant to lift due to wind or the like can be realized.

The square pipe 2 has a C-shape and can absorb the elongation of the wire 5.

Further, conventionally, there was a problem that a strain pressure due to a bending action was generated in the solar cell module due to the rigid connection between the mold steel and the square pipe with bolts or the like. Since the square pipe 2 is configured to be inserted into the channel steel 1 through the square hole 3,
Only the pressing force against the roof acts on the mold steel material, that is, no bending stress is generated on the solar cell module.

[0024]

As described above, according to the present invention,
It is possible to realize a highly reliable solar cell installation base having a small number of members, sufficiently withstanding wind pressure strength, and applying uniform tension to the entire solar cell.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a solar cell installation base according to one embodiment of the present invention is used.

FIG. 2 is a sectional view of a square pipe of the solar cell installation stand of FIG. 1;

FIG. 3 is an enlarged sectional view of FIG. 2;

FIG. 4 is an enlarged view of the turnbuckle of FIG.

FIG. 5 is a perspective view of a conventional solar cell installation base.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Channel steel 2 Square pipe 4 Square hole 5 Wire 12 Solar cell module

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01L 31/042 E04D 13/18

Claims (1)

(57) [Claims] 1. A solar cell installation base for installing solar cells on a roof of a house, wherein two groove-shaped steels are installed in parallel with a lateral direction of the roof surface and mount the solar cells on an upper surface thereof. And two square pipes that penetrate holes provided at the ends of the channel steel so as to be orthogonal to the channel steel, and are bent so that both ends are separated from the roof surface. A solar cell installation, characterized in that the square pipes of the book are fixed to the ridge side and the eaves side of the roof, respectively, by inserting both ends on the ridge side and the eaves side of the roof with wires, respectively. Mount.