FR3120170A1 - Extensible support device for solar panel on roof - Google Patents

Abstract

The invention relates to a support device (10) for a solar panel (12) on a roof, comprising a roof element (14) which delimits a hole (34) for the passage of a support (16) for a solar panel (12 ), characterized in that the roofing element (14) comprises at least a first elongation strip (32a) which has an accordion shape and which is able to be extended or retracted to allow the elongation or contraction of the roof element (14) along a direction perpendicular to said first elongation strip (32a). (Fig.1)

Description

Extensible support device for solar panel on roof

Field of invention

This patent application relates to an extendable support device on the roof, which is particularly suitable for supporting a solar panel of the photovoltaic panel or thermal solar panel type.

State of the art

The installation and fixing of a solar panel, whether a photovoltaic panel or a solar thermal panel, is traditionally carried out using a hook and metal rail support system.

This type of hook system according to the prior art generally comprises a plurality of hooks which each have a U-shape comprising a lower section, an upper section and an intermediate connection portion.

The lower section extends in the direction of the slope of the roof and is fixed to a structural element, such as a rafter, for example by screwing.

In addition, the lower section of each hook is interposed between a higher row tile and a lower row tile, to protrude from the cover formed by the tiles. By tile is meant any type of roofing element suitable for forming a roof covering.

Typically, the upper section of each hook extends above the cover, and above the associated lower section, and it supports a fixing bar for the solar panel, the system comprising at least two fixing bars which are intended to fix the solar panel on the roof.

It can be seen that under the weight of the snow on the solar panel or under the weight of a person, the lower section of each hook presses on the tile it covers.

This pressure exerted on the underlying tile by the hook risks damaging said tile.

In addition, the installation of the hook may require cutting part of a tile or may cause the lifting of a tile, which may affect the waterproofing of the roof and cause water infiltration under the cover.

To overcome this problem, there is also known from the state of the art a support device for a solar panel on a roof which is described and represented in the document FR3063192.

According to this document, the support device comprises a support foot extending along an axis perpendicular to the roof, a roof element provided with a chimney for the passage of the support foot, a connecting member of the support foot on a solar panel and a bell that covers the support foot and the chimney to ensure the tightness of the device and the roof.

Technical problem remaining

A drawback observed with the solar panel support device of the type described in the document FR3063192 is that it is generally adapted to a single dimension of roofing element.

Indeed, the added roof element described in document FR3063192 is mounted in place of a roof element of the existing cover.

Thus, it will be understood that the format and dimensions of the added roofing element may not be adapted to the replaced roofing element, which implies having to have a plurality of roofing element formats.

In addition, it is necessary to make a seal between the bell and the support of the device described in the document FR3063192, to ensure the tightness of the device.

The object of the present invention is in particular to solve these drawbacks.

This objective is achieved, as well as others will appear on reading the description which follows, with a support device for a solar panel on the roof, comprising a roofing element which delimits a hole for the passage of a support for a solar panel , characterized in that the roofing element comprises at least a first elongation strip which has an accordion shape and which is able to be extended or retracted to allow the elongation or the contraction of the roofing element according to a direction perpendicular to said first elongation strip.

The device according to the invention makes it possible to adapt the transverse dimension of the roofing element to the dimension of the roofing elements present on the roof.

According to other optional characteristics of the process according to the invention, taken alone or in combination:

- the roof element is delimited, according to the direction of flow of the runoff water, by an upper upstream edge and by a lower downstream edge, and in that the first elongation strip extends from the upper edge to 'at the lower edge of the roof element. This feature allows the first elongation strip to expand and retract along the entire length of the roof element;

- the roofing element comprises a second elongation strip which has an accordion shape and which is capable of being extended or retracted to allow the elongation or contraction of the roofing element in a direction perpendicular to said second strip elongation strip, the second elongation strip being arranged parallel to the first elongation strip, and in that the first elongation strip and the second elongation strip are arranged on either side of the passage hole provided for the passage of the support;

- the roofing element comprises at least a third elongation strip which extends perpendicularly to said first elongation strip. This characteristic makes it possible to adapt the dimension of the roof element according to the direction of the slope of the roof;

- each extension strip is made in one piece with the roofing element;

- it comprises a support which comprises at least a first part which is adapted to be connected to a framework and which extends through the passage hole delimited by the roofing element, and at least a second part which forms an elbow with said first homeland and which is adapted to support the solar panel;

- the roofing element comprises an annular collar which borders the passage hole delimited by the roofing element to prevent runoff water from penetrating through said passage hole;

- it comprises a bent sheath which extends around the support, from a first section connected to the passage hole delimited by the roofing element, to a second section which surrounds the second part of the support, at least in part , to prevent the entry of rainwater and seal the roof element.

Other characteristics and advantages of the invention will become apparent on reading the following description, with reference to the appended figures, which illustrate:

: a perspective view of the support device according to the invention which supports a solar panel and which comprises a roofing element equipped with two elongation strips;

: a perspective vertical sectional view of the support device of the , which comprises a support which passes through a passage hole delimited by the roofing element;

: a perspective detail view of the roof element of the ;

: a detail view of the first elongation strip, in extended position, of the roof element of the ;

: a detail view of the first elongation strip, in the retracted position, of the roof element of the ;

: a perspective view of the support device, the roof element of which is equipped with a third transverse elongation strip, according to a variant embodiment of the invention.

Detailed description of embodiments of the invention

In the description and the claims, the expressions “upper”, “lower” and their derivatives will be used without limitation with reference to the upper part and the lower part respectively of FIGS. 1 to 6, and the expressions “upstream” and "downstream" refers to the direction of flow of rainwater from upstream to downstream on the roof.

In addition, to clarify the description and the claims, the terminology longitudinal, vertical and transverse will be adopted without limitation with reference to the trihedron L, V, T indicated in the figures.

For the various variant embodiments, the same references may be used for identical elements or providing the same function, for the sake of simplifying the description.

We represented at the a support device 10 for solar panel 12 (truncated in the figures) which is represented in a configuration of use, in which the device 10 is inclined with respect to a vertical axis, to allow the flow of rainwater from upstream downstream according to the direction of the slope of the roof 13.

The expression “solar panel” covers any type of photovoltaic panel and solar thermal panel.

The support device 10 comprises a roofing element 14 and a support 16 to support and fix the solar panel 12 on the frame 17 (visible in ).

According to the example described in this description, the roofing element 14 has a generally flat shape, like a slate for example.

However, without limitation, the roof element 14 may have the shape of a corrugated tile or any other suitable shape.

As can be seen at the , the roofing element 14 is an integral part of a cover which comprises a plurality of slates 18.

More particularly, the roofing element 14 according to the invention comprises an upper portion 20 upstream, which is covered by two slates of higher rank, and a lower portion 22 downstream, which covers two slates of lower rank.

With reference to the , the roof element 14 is delimited, according to the direction of flow of the runoff water, by an upper edge 24 upstream and by a lower edge 26 downstream.

Similarly, the roof element 14 is delimited transversely, in a direction perpendicular to the direction of flow of runoff water, by a first side edge 28 and by a second side edge 30 opposite.

According to the invention, the roofing element 14 comprises a first elongation strip 32a and a second elongation strip 32b which each extend from the upper edge 24 to the lower edge 26 of the roofing element. 14.

The first elongation strip 32a and the second elongation strip 32b are arranged symmetrically on either side of a vertical plane of general symmetry (not shown) of the roof element 14.

In addition, the first elongation strip 32a and the second elongation strip 32b are capable of being extended or retracted to allow the elongation or the contraction respectively of the roofing element 14 in a transverse direction, perpendicular to the strips of extension 32a, 32b.

To this end, the first elongation strip 32a and the second elongation strip 32b each have an accordion shape. By "accordion shape" is meant any pleated shape adapted to be extended and retracted in a direction perpendicular to the folds of the accordion.

According to a preferred embodiment, each elongation strip 32a, 32b has an accordion shape formed by a succession of folds which each have a generally triangular section.

As a non-limiting example, the folds which form the accordion of each elongation strip 32a, 32b can have other shapes, for example a sinusoidal shape.

Similarly, according to a variant embodiment of the invention not shown, the roofing element 14 may comprise a single elongation strip which covers the entire roofing element 14.

We represented at the the first elongation strip 32a of the roof element 14 in its extended position and there is shown in the first elongation strip 32a in its retracted position.

Thus, it is possible to vary the dimension of the roofing element 14 along a transverse direction, perpendicular to the direction of flow of the runoff water, thanks to which the roofing element 14 can adapt to different configurations of roofs.

We represented at the a variant embodiment of the support device 10 according to the invention, in which the roofing element 14 comprises a third elongation strip 32c which extends transversely, that is to say perpendicular to the first elongation strip 32a .

The third elongation band 32c has the same characteristics as the first elongation band 32a and the second elongation band 32b, the third elongation band 32c will therefore not be described in more detail.

Each elongation strip 32a, 32b, 32c is made in one piece with the roofing element 14, for example by plastic injection or by thermoforming.

However, without limitation, each elongation strip 32a, 32b, 32c can be attached to the roof element 14, for example by gluing or by welding.

According to another aspect of the invention, with reference to the and 3, the roof element 14 delimits a hole 34 for the passage of a support 16 for the solar panel 12.

Hole 34 is bordered by a flange 38 which is designed to prevent runoff water from flowing through hole 34.

The support 16 comprises a first part 40 which is connected to the frame 17 and which extends through the passage hole 34 delimited by the roof element 14, in a direction generally perpendicular to the roof 13.

In addition, the support 16 comprises a second U-shaped part formed by a first lower branch 42a which is connected to the first part 40 of the support 16 and by a second upper branch 42b, the first branch 42a and the second branch 42b being generally parallel. at the plane of the roof 13.

The second upper branch 42b of the support 16 is adapted to support the solar panel 12.

The first part 40 of the support 16 has an inverted T shape which includes a flange 44 fixed to the frame 17, for example by means of four screws (not shown).

As can be seen at the , the second part of the support 16 carries the solar panel 12 via a transverse metal bar 46 which is fixed to the support 16 by a screw, for example.

The metal bar 46 is supported by another support device (not shown) according to the invention. Similarly, it will be noted that the solar panel 12 is supported by a second bar (not shown) which is connected to the frame 17 by two other support devices according to the invention (not shown).

According to another aspect of the invention, the support device 10 comprises a bent sheath 48 extending around the support 16, from a first section 50 which is connected to the flange 38 and which surrounds the first part 40 of the support 16, up to a second section 52 which partly surrounds the first branch 42a of the second part of the support 16.

For this purpose, the sheath 48 is elastically deformable to form a bend and to adapt to the shape of the support 16 of the solar panel 12.

In addition, the sheath 48 forms an expandable accordion to adapt in length to the associated support 16.

The second section 52 of the sheath 48 is inclined towards the downstream of the roof 13 according to the direction of runoff of the rainwater.

In other words, the free end of the sheath 48 is oriented substantially towards the ground, to prevent the entry of rainwater into the sheath 48 directly or by runoff.

In addition, the free end of the second section 52 of the sheath 48 is closed off by a plug 54 to prevent the intrusion of any undesirable element into the sheath 48 and ensure the sealing of the roof element 14.

Without limitation, the roof element 14 according to the invention can be arranged on an underlying pre-existing roof element (not shown). In this configuration, the roof element 14 according to the invention has a shape complementary to the shape of the pre-existing roof element.

The roofing element 14 according to the invention can also be elastically deformable so as to globally match the shape of the underlying roofing element.

Also, in this configuration in which the roofing element 14 according to the invention rests on an underlying roofing element, the roofing element 14 according to the invention can be equipped with edges (not shown) which are provided to be folded down to the periphery of the underlying roofing element, to link the two roofing elements together.

In addition, the underlying roofing element should be drilled to allow the passage of the support 16.

This description of the invention is given by way of non-limiting example.

It will be understood in particular that the support device 10 according to the invention also allows the passage of a cable, or pipe, through the sheath 48.

Claims (8)

Support device (10) for solar panel (12) on roof, comprising a roof element (14) which delimits a hole (34) for the passage of a support (16) for solar panel (12), characterized in that that the roofing element (14) comprises at least a first elongation strip (32a) which has an accordion shape and which is capable of being extended or retracted to allow the extension or contraction of the roofing element (14) in a direction perpendicular to said first elongation strip (32a). Support device (10) according to Claim 1, characterized in that the roofing element (14) is delimited, according to the direction of flow of the runoff water, by an upper edge (24) upstream and by a lower edge (26) downstream, and in that the first elongation strip (32a) extends from the upper edge (24) to the lower edge (26) of the roof element (14). Support device (10) according to any one of the preceding claims, characterized in that the roofing element (14) comprises a second elongation strip (32b) which has an accordion shape and which is able to be extended or retracted to allow the elongation or contraction of the roofing element (14) in a direction perpendicular to the said second elongation strip (32b), the second elongation strip (32b) being arranged parallel to the first strip elongation strip (32a), and in that the first elongation strip (32a) and the second elongation strip (32b) are arranged on either side of the passage hole (34) provided for the passage of the holder (16). Support device (10) according to any one of the preceding claims, characterized in that the roofing element (14) comprises at least a third elongation strip (32c) which extends perpendicularly to the said first strip of elongation (32a). Support device (10) according to any one of the preceding claims, characterized in that each extension strip (32a, 32b, 32c) is produced in one piece with the roof element (14). Support device (10) according to any one of the preceding claims, characterized in that it comprises a support (16) which comprises at least a first part (40) which is adapted to be connected to a framework (17) and which extends through the passage hole (34) delimited by the roofing element (14), and at least a second part (42a, 42b) which forms a bend with said first homeland (40) and which is adapted to support the solar panel (12). Support device (10) according to any one of the preceding claims, characterized in that the roofing element (14) comprises an annular flange (38) which borders the passage hole (34) delimited by the roofing element (14) to prevent runoff water from entering through said passage hole (34). Support device (10) according to any one of the preceding claims, characterized in that it comprises a bent sheath (48) which extends around the support (16), from a first section (50) connected to the hole (34) passage delimited by the roofing element (14), up to a second section (52) which surrounds the second part (42a, 42b) of the support (16), at least in part, to prevent the entry of rainwater and seal the roof element (14).