JP2006274591A - Support device for solar cell module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a support device for an inclined roof face or flat roof face installed type photovoltaic power generator capable of absorbing a mounted position error of a fitting to some extent in the photovoltaic power generator installed through a mounting frame on an inclined roof face, a flat roof face, or the like. <P>SOLUTION: The support device for the solar cell module is disposed between a frame body mounted to a solar cell module, and a fixed member fixed onto the roof. The support member is composed of a support cylinder which has a circular recess inside; a placing part provided at the support cylinder to place the frame body thereon; a planetary gear rotationally moving along the internal wall of the recess of the support cylinder; a supporting shaft connecting the planetary gear to the fixed member and connected to the planetary gear in an eccentric position from a rotating shaft of the planetary gear; a spacer arranged in the recess of the support cylinder and bringing the internal wall of the support cylinder and the planetary gear into contact with each other; and a cylinder cover put on the support cylinder. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a solar cell module support device that is arranged between a fixing member fixed on a roof surface of a house and a solar cell module and supports the solar cell module.

  In recent years, solar power generation systems that generate power on the roofs of houses using solar cells that convert sunlight into electrical energy have become widespread.

  In the photovoltaic power generation system, a rack made of rail material is placed on the inclined roof surface or flat roof surface, which is the roof of the house, and multiple solar cell modules are placed on it, and the generated DC power is converted into AC power. Using a power conditioner that converts to power, the power is sold to a commercial power system such as an electric power company, or power is supplied to an AC load in a house. Specifically, when installing the solar cell module on the roof as described above, the support bracket 51 is attached with screws or nails on the surface of the roof 50 as shown in FIG. 19, and the vertical beam 52 is fixed thereon, Further, a cross rail 53 is mounted thereon. Finally, the solar cell module 30 is fixed on the cross rail 53 with bolts or a holding plate, and the solar power generation system 39 is completed. FIG. 20 shows the state of fixing around the fixing bracket 51 in detail. Since the fixing bracket 51 needs to be firmly fixed on the roof in order to support the photovoltaic power generation system, a portion where the rafters of the roof are present is selected and attached with the fixing screw 107. In the drawing, the vertical beam 52 is formed as a part of the support portion of the fixing bracket 51 and is fixed to the roof together with the fixing bracket 51 via the mounting hole 108 with the fixing screw 107. In some cases, the crosspiece 52 is a general U-shaped rail, and a rising support portion that supports the U-shaped rail is provided on the fixing bracket 51 and is separately fixed with a bolt or the like. A horizontal beam 53 is fixed on the vertical beam 52 by a stopper 103 and a fixing bolt 104.

  However, the position of the rafters on the roof is often different for each property, and the mounting position of the fixing bracket 51 on the roof moves accordingly, and the distance between the vertical bars 52 varies accordingly. The horizontal rail 53 must change the position of the through hole through which the fixing bolt 104 is passed. Therefore, as shown in the figure, a method is used in which a horizontal slit 106 and a vertical slit 105 are provided in the vertical beam 52 and the horizontal beam 53 so that the connection position can be accommodated even if the connection position is slightly moved.

  Alternatively, the position of the support bracket on the roof surface side should be positioned with high precision so that the error is very small, and a small position error should be made in the mounting bracket 108 on the side of the support bracket or on the vertical or horizontal beam. There is also a method of taking a means for absorbing a minute error.

In addition, a structure has been proposed that enables fine adjustment of the position in the vertical and horizontal directions through a member provided with a longitudinal, horizontal, or cross-shaped slot as a support member between the roofing material and the module. (For example, see Patent Document 1).
JP 2003-82824 A

  However, in order to absorb the deviation of both the flow direction and the left and right direction of the roof surface in the same way, members corresponding to the vertical beam and the horizontal beam are indispensable, and each beam requires a long hole for mounting. there were. Or it was necessary to perform construction so as not to cause a large deviation by accurately determining the position of the fixing bracket of the solar cell module. Therefore, there is a problem in that the cross-sectional area and the section modulus of the crosspiece are significantly reduced in the cross section of the long hole portion as compared with other cross sections.

  In addition, in order to improve versatility, if a long hole is provided in advance in a vertical beam or a horizontal beam and the long hole is left unused, the resistance to bending strength is weak in the vicinity, and necessary disconnection is required. In order to secure the area and section modulus, the thickness of the crosspiece had to be increased, which increased the overall weight of the crosspiece and increased the burden on the roof.

  Moreover, since it is necessary to improve the positioning accuracy of the support fittings in order to obtain the accuracy of the interval between the plurality of parallel bars, time and labor are required for the construction. Similarly, even if a long hole slit is inserted into the vertical beam or horizontal beam to make fine corrections, misalignment occurs during construction work until the bolt is tightened to fix the vertical beam to the horizontal beam or fixing bracket. Because there is a possibility, construction takes time.

  In view of the above-mentioned problems, the present invention simplifies the positioning of the support bracket when installing the photovoltaic power generation device on the inclined roof and the flat roof surface, or the mounting position of the support bracket on a different roof surface for each property An object of the present invention is to provide a support device for a photovoltaic power generation system that can be positioned regardless of whether or not.

A support device for a solar cell module according to the present invention is a support device for a solar cell module disposed between a frame attached to the solar cell module and a fixing member fixed on the roof, A support cylinder having a circular recess, a mounting portion provided on the support cylinder, on which the frame body is mounted, a planetary gear that rotates and moves along an inner wall of the recess of the support cylinder, and the planetary gear; A support shaft connected to the fixed member and connected to the planetary gear at a position eccentric from the rotation shaft of the planetary gear, and disposed in a recess of the support cylinder, and an inner wall of the support cylinder and the planetary gear It is comprised from the spacer made to contact, and the cylinder cover which covers the said support cylinder.

  The support device for a solar cell module according to the present invention is characterized in that, in the support device, the position of the mounting portion is movable according to the rotation of the planetary gear.

    Furthermore, the support device for a solar cell module according to the present invention is characterized in that, in the support device, a gear is used for driving the inner wall of the support cylinder and the planetary gear.

    According to the present invention, it is possible to absorb irregular positional deviation of the fixing member caused by the positional relationship such as the rafters of the roof within the movable range of the mounting portion, and similarly, different support for each property Since it can also correspond to the position, it is possible to simplify the time and labor required for the alignment of the frame of the solar cell module or the vertical beam or horizontal beam on which a plurality of solar cell modules are mounted.

  In addition, it is no longer necessary to provide slits or the like in advance in the vertical beam, horizontal beam, etc., and the structure of the frame of the frame or solar cell module that is balanced in strength by reducing the number of processing steps and improving the cross-sectional performance. It is possible to avoid an increase in weight due to an increase in the thickness of the frame and to reduce the burden on the roof.

  Also, by attaching a gear to the planetary gear, it is possible to ensure rotation between the inner wall of the support cylinder and the spacer, and it is difficult for positional deviation after fixing of the shaft on the roof surface side and the shaft on the module side due to slippage of each contact portion, Fixed holding force against external force is improved.

  Also, if the spacer is crescent shaped to wrap around the planetary gear so that no rattling or the like occurs, the planetary gear becomes very stable and the stability against external force is improved.

  Moreover, if an adapter is used, it is easy to make two or more mounting parts, and it is possible to reduce the number of support devices used.

  Below, the structure of the support apparatus for solar cell modules of this invention is demonstrated based on a typical figure.

FIG. 7 is a cross-sectional view showing a support device and a support structure of the photovoltaic power generation system of the present invention. FIG. 1 is a perspective view showing the appearance of the support device of the present invention, and FIG. 2 is a perspective view showing an overview of FIG. 1 viewed from the back side. FIG. 3 is a cross-sectional view showing a DD cross section of FIG.

  As shown in FIG. 7, a solar cell module and a support device S of a solar power generation system in which a plurality of the solar cell modules are mounted are provided along a support cylinder 1 having a circular recess inside and an inner wall of the recess. A circular planetary gear 6 that moves, a spacer 7 that keeps the support cylinder 1 and the planetary gear in contact with each other, and a cylinder cover 2 that covers the planetary gear 6 and the spacer 7 so as not to fall out of the support cylinder 1. The planetary gear 6 is provided with a support shaft 4 that is eccentric from the rotation shaft and is connected to the outside. And the said support shaft 4 is inserted in the bearing part 57 of the support metal fitting 58 attached on the roof 50, and a vertical beam, a horizontal beam, or a direct solar cell module is mounted on the mounting part 5 provided in the upper part of the support cylinder 1. FIG. 30 frames are fixed with screws and bolts. In this example, the support shaft 4 inserted into the bearing portion 57 is fixed by the nut 56, but a retaining bracket such as an E-ring may be used instead of the nut. Moreover, although the mounting part 5 was two places, it is good also as one place or four places using the adapter mentioned later.

  FIG. 1 shows an appearance of the support device S described above. A planetary gear and a spacer are housed in a support cylinder 1 having a recess and a cylinder cover 2, and a support shaft 4 connected to the planetary gear extends from an axial movement slit 22 of the cylinder cover 2 to the outside. Further, as shown in FIG. 2, a mounting portion 5 is provided on the upper portion (back side in the drawing) of the support cylinder 1 to directly or indirectly support the vertical beam, the horizontal beam, and the solar cell module. Fix it. In the example shown in the figure, the mounting portion 5 has a shape having a screw hole and is fastened with a bolt. However, the same function can be achieved as a male screw.

  FIG. 8 shows the DD cross section of FIG. 1 described above. The support cylinder 1 and the cylinder cover 2 have a concentric relationship with the center point X as an axis, and the planetary gear 6 and the spacer 7 accommodated in the support cylinder 1 move along the inner wall of the support cylinder 1 in the concentric circle described above. Is possible. Further, the support shaft 4 provided on the planetary gear 6 can move 360 degrees by rotating the planetary gear 6. In this example, in order to make it easy to understand the movement of the planetary gear and the support shaft, the planetary gear will be described using a planetary tooth roller having no teeth.

  FIG. 9 shows a BB cross section of FIG. A planetary gear 6 that is a planetary roller and a spacer 7 are accommodated in the support cylinder 1 so as to be in contact with the inner wall of the support cylinder 1. Each movement of the planetary gear 6 and the spacer 7 is performed by both rotation and sliding. Since the support cylinder 1 and the planetary gear 6 can move while idling, when the support shaft 4 is moved in the radial direction of the center X of the concentric circle of the support cylinder 17 as indicated by an arrow 19, the support shaft 4 is moved. When the planetary gear 6 is moved along the axis Y, the planetary gear 6 is rotated naturally, and the spacer 7 is rotated accordingly. Therefore, the support shaft 4 can move linearly as indicated by an arrow 19. However, in this case, since it is considered that the frictional resistance between the support cylinder 1 and the planetary gear 6 or the spacer 7 increases, the smooth movement does not occur. Therefore, the planetary gear 6 and the spacer 7 and the support cylinder as shown in FIG. It is preferable that the contact portion with 17 is brought into contact with a small area because the frictional resistance is reduced. Further, as shown in FIG. 6, the ball bearing 9 group is sealed between the support cylinder 1 and the cylinder cover 2 by a connecting bar 3, and the supporting cylinder 1, the cylinder cover 2, and the connecting bar 3 are rotated around the rotation axis X. It is possible to make the structure freely rotatable and to include the planetary gear 6 in contact with the connecting bar 3 to further reduce the resistance to rotation. If the point support part is used extensively to reduce the frictional force, the stability of the planetary gear 6 may be lost. Therefore, as shown in FIG. 9, the spacer 7 is wrapped around the planetary gear 6 like a crescent moon. It is preferable to prevent rattling or the like from occurring.

  The movement of the support shaft 4 will be described in more detail. When the planetary gear is configured to use a planetary roller, the support shaft 4 can be disposed at any position within the distance from the center X of the concentric circle. However, since the position is held only by the frictional force between the parts, if the external force is applied to the support shaft, it is easily moved. Therefore, as shown in FIG. 4, the planetary gear 6 is a gear having teeth on the outer periphery, teeth that mesh with the planetary gear 6 are provided on the inner wall of the support cylinder 1, and teeth on both the planetary gear 6 and the inner wall of the support cylinder 1 are provided. When the engaging spacer 17 (in this example, 7a to 7d) is fitted into the support cylinder 1 and the cylinder cover 2, resistance to external force is preferably generated. In the example shown in the figure, the spacer 7 is composed of a bracket 7a, pinions 7b and 7c, and a shaft 7d, and the pinion 7b and 7c can be rotated by the shaft 7d without interfering with each other. While the positional relationship between the planetary gear 6 and the spacer 17 is maintained, the teeth of the planetary gear 6 and the inner wall of the support cylinder 1, the planetary gear 6 and the pinion 7c, and the pinion 7b and the teeth of the inner wall of the support cylinder 1 mesh with each other. However, it can rotate freely around the central axis X of rotation. FIG. 5 is an external view of a state in which the cylinder cover 2 having the axial movement slit 8 is placed thereon. In this way, the planetary gear 6 and the spacer 17 inside the support cylinder 1 rotate while rolling around the central axis X of rotation shown in FIG. At this time, since the support shaft 4 attached to the planetary gear 6 is eccentric from the center of the planetary gear 6 by a distance e, the support shaft 4 is rotated around the planetary gear 6 rotating at the radius e from the center axis X of rotation with the radius e. It moves while rotating further. Therefore, the movement of the support shaft 4 becomes a cycloid curve like the curve 10 in FIG. 10, and it is possible to take an arbitrary position between 0 and 2e in the radial direction of the support cylinder 1. Since this movement can be performed only by rotating the support shaft 4, even if an external force is applied to the support shaft 4, the support shaft 4 obtains a force for holding the position by the biting resistance of each gear, and the solar cell. It is possible to stably support a module and a support such as a solar power generation system on which a plurality of the solar cell modules are mounted. Furthermore, in order to reliably prevent displacement of the support shaft 4 due to a load from the outside, a contact force between the support cylinder 1 and the cylinder cover 2 is increased so that a frictional force can withstand a certain load. The support shaft 4 and the shaft 5 are completely constrained if the rotation of the support cylinder 1 and the cylinder cover 2 is constrained. In the figure of this example, the frame of the solar cell module is directly supported by the support device S. However, a solar cell array (solar power generation system) in which a plurality of solar cell modules are mounted on the same rail. In this case, it goes without saying that the cross is synonymous with the frame.

  As described above, according to the support device of the present invention, the solar cell module fixed shaft in the in-circle region having the radius of the sum of the eccentric distances of the fixed shaft center with respect to the roof surface and the planetary gear and the solar cell module fixed shaft center. And the roof surface fixed axis can take any desired positional relationship, and can absorb or reduce the increase or decrease in the distance of the support device caused by the positional relationship such as the rafters of the roof. Construction work such as module alignment can be facilitated.

  Next, application forms of the support device according to the present invention will be described. The support shaft 4 attached to the planetary gear 6 is in a position eccentric from the center of the planetary gear 6 shown in FIG. 4 by a distance e, and an in-circle region having a radius e from the center of the planetary gear 6 is located in the support cylinder 1. The inner size of the planetary gear 6 and the support cylinder 1 is determined so as to include the rotation axis X. The spacer 7 may be of a shape that makes contact with the support cylinder 1 and the planetary gear 6 at three or more points, and it has already been described in the example using the planetary roller that it may not be a gear. 12, the pinions 13b to 13d of the spacer 13 (13a to 13d) and the outer peripheral portion of the planetary gear 12 may be configured to use a transmission force due to friction caused by a material such as rubber or resin instead of a gear. If this form is adopted, there will be no problems with biting due to foreign matters entering the gears, etc., arbitrary positioning can be performed relatively smoothly, and the frictional resistance can be kept relatively large. In addition, there is an advantage that the size can be easily reduced. Also, it can be maintenance free. FIG. 11 is a side sectional view showing a state of contact between the pinion 13d (or the pinion 13b) and the planetary gear 12, and a state of contact between the pinion 13c or the planetary gear 12 and the inner wall of the support cylinder 1. is there. FIG. 14 shows an example in which the spacer shown in FIG. 4 is replaced with a material such as rubber or resin, and FIG. 13 is a sectional view thereof.

  FIG. 16 shows an example in which the rotation of the support cylinder 1 and the planetary gear 6 utilizes transmission by a gear, and the movement of the spacer 11 is slid between the support cylinder 1 and the planetary gear 6. FIG. FIG. Thus, if it is made the structure which ensures the ensuring of the frictional resistance by a gearwheel, and the ease of rotational movement, the construction work of positioning can be made easier.

  FIG. 17 is an example in which the adapter 15 is attached to the mounting portion 5a of the support cylinder 1 and the mounting portions 5 are provided at four locations, and FIG. 18 is a plan layout view thereof. In this way, a plurality of solar cell modules and crosspieces can be supported by a single support device, and the number of members can be reduced.

It is an external appearance perspective view which shows schematic structure of the support apparatus of the solar cell module which concerns on this invention. It is an external appearance perspective view which shows the upper part structure of the support apparatus of the solar cell module which concerns on this invention. It is sectional drawing which shows embodiment of the internal structure of the support apparatus which concerns on this invention. It is sectional drawing which shows the structure of other 2nd Embodiment of the support apparatus which concerns on this invention. It is a top view which shows the upper part structure of other 2nd Embodiment of the support apparatus which concerns on this invention. It is an expanded block diagram of the a part of FIG. 3 of the support apparatus which concerns on this invention. It is sectional drawing explaining typically a mode that a solar cell module is supported using the support apparatus which concerns on this invention. It is sectional drawing which shows the structure of other 1st Embodiment of the support apparatus which concerns on this invention. It is a perspective top view which shows the structure of other 1st Embodiment of the support apparatus which concerns on this invention. FIG. 5 is a cycloid curve schematically illustrating how the support shaft rotates in the embodiment of FIG. 4. It is sectional drawing which shows the structure of other 3rd Embodiment of the support apparatus which concerns on this invention. It is a perspective top view which shows the structure of other 3rd Embodiment of the support apparatus which concerns on this invention. It is sectional drawing which shows the structure of other 4th Embodiment of the support apparatus which concerns on this invention. It is a see-through | perspective top view which shows the structure of other 4th Embodiment of the support apparatus which concerns on this invention. It is sectional drawing which shows the structure of other 5th Embodiment of the support apparatus which concerns on this invention. It is a see-through top view showing the composition of other 5th embodiments of the supporting device concerning the present invention. It is sectional drawing which shows the structure of other 6th Embodiment of the support apparatus which concerns on this invention. It is a top view which shows the upper part structure of other 6th Embodiment of the support apparatus which concerns on this invention. It is a perspective view which shows typically a mode that a solar power generation system is installed on a general inclined roof using a crosspiece and a fixing bracket. It is a perspective view explaining typically signs that a crosspiece is fixed on a roof with the conventional fixing device.

Explanation of symbols

1: Support cylinder 2: Cylinder cover 3: Connecting bar 4: Support shaft 5, 5a: Placement portion 6: Planetary gear 7: Spacer 7a: Bracket 7b: Pinion 7c: Pinion 7d: Shaft 8: Shaft moving slit 9: Ball Bearing 10: Cycloid curve 12: Planetary gear 13: Spacers 13b to 13d: Pinion 14: Spacer 15: Adapter 17: Spacer 19: Shaft operating direction 22: Shaft moving slit 30: Solar cell module 39: Solar power generation system 50: Roof 51: Support bracket 52: Vertical rail 53: Horizontal rail 56: Nut 57: Bearing 58: Support bracket 103: Stop bracket 104: Fixing bolt 105: Vertical slit 106: Horizontal slit 107: Fixing screw 108: Mounting hole S: Support device

Claims (3)

A support device disposed between a frame body to be attached to a solar cell module and a fixing member fixed on a roof, the support cylinder having a circular recess inside, and provided on the support cylinder A mounting portion on which the frame body is mounted, a planetary gear that rotates and moves along the inner wall of the concave portion of the support cylinder, and the planetary gear and the fixing member are connected to each other from the rotating shaft of the planetary gear. A support shaft connected to the planetary gear at an eccentric position, a spacer that is disposed in a recess of the support cylinder and that contacts the inner wall of the support cylinder and the planetary gear, and a cylinder cover that covers the support cylinder A support device for a solar cell module. The solar cell module support device according to claim 1, wherein the position of the mounting portion is movable according to the rotation of the planetary gear. The support device for a solar cell module according to claim 1 or 2, wherein a gear is used to drive the inner wall of the support cylinder and the planetary gear.

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