Three-pump folding frame and photovoltaic power generation device comprising three-pump folding frame
The three-dimensional folding mechanism with fixed bending directions and guides improves the folding efficiency of photovoltaic systems, reducing space requirements and maintaining structural integrity and aesthetics.
Patent Information
- Application Number
- CN202422172953.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-04
AI Technical Summary
The existing foldable photovoltaic sky curtain has a low folding utilization rate and a large space occupancy.
The Miura folding frame designed by the Miura folding method achieves efficient folding of the frame unit through the fixed bending direction of the connecting members and the built-in folding guide structure. The connecting members are opposite in the bending direction on the mountain line and the valley line, and combine the clamping structure and the guide structure to improve the folding efficiency.
The folding space is greatly compressed, the folding ratio is improved, and the surface of the connecting member is kept free of crease, improving aesthetics and ease of use.
Smart Images
Figure CN223109954U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of photovoltaic power generation, and particularly provides a Miura folding rack and a photovoltaic power generation device including the Miura folding rack. Background Art
[0002] With the increasing shortage of global energy, the utilization of solar energy has attracted more and more attention. The application area of solar photovoltaic power generation devices is becoming wider and wider, covering multiple industries and fields.
[0003] Taking the foldable photovoltaic awning as an example, the foldable photovoltaic awning is a new type of solar cell technology that combines portability, flexibility, and high-efficiency energy conversion, and is very suitable for outdoor activities such as camping.
[0004] The technology of foldable photovoltaic awnings is developing rapidly. Researchers have not only made remarkable progress in improving the photoelectric conversion efficiency of solar cells, but also achieved breakthroughs in the development of flexible solar cells. Flexible solar cells also have great development potential in the fields of wearable electronics, mobile communications, vehicle-mounted mobile energy, building-integrated photovoltaics, and aerospace.
[0005] The market for foldable photovoltaic awnings is gradually expanding. With the popularity of outdoor activities and the increasing demand for environmental protection energy, this lightweight, portable, and high-efficiency solar cell technology has broad market prospects in application scenarios such as camping, and is very suitable for outdoor activities such as camping, providing people with portable and efficient energy solutions.
[0006] The existing foldable photovoltaic awning mainly includes a foldable rack and a solar panel installed on the foldable rack. When in use, the foldable rack is unfolded, and when not in use, the foldable rack is folded up. However, the existing foldable racks are all simple flip-folded, and the ratio of the folded space to the fully unfolded volume is still large, resulting in low folding utilization rate.
[0007] Therefore, a new technical solution is needed in this field to solve the above problems. Content of the Utility Model
[0008] The utility model aims to solve the above technical problems, that is, to solve the problem of low folding utilization rate of the foldable rack of the existing photovoltaic power generation device.
[0009] In a first aspect, the present utility model provides a Miura folding rack, which includes a plurality of frame units and a plurality of connecting members. Two adjacent frame units are connected by the connecting members, and the connecting members can be bent to fold the two adjacent frame units. The connecting members have a fixed bending direction, and the bending direction of the connecting members arranged on the mountain line of the Miura folding rack is opposite to the bending direction of the connecting members arranged on the valley line of the Miura folding rack, so that the Miura folding rack can be folded according to the Miura folding method.
[0010] In a preferred technical solution of the above Miura folding rack, the interior of the connecting member is provided with a first folding guide structure and a second folding guide structure that are spaced apart along its length direction. The first folding guide structure and the second folding guide structure extend obliquely from the first inner surface of the connecting member in a direction away from each other to the second inner surface of the connecting member opposite to the first inner surface, and the connecting member bends in the direction from the first inner surface towards the second inner surface at a position between the first folding guide structure and the second folding guide structure.
[0011] In a preferred technical solution of the above Miura folding rack, the first folding guide structure and the second folding guide structure are symmetrically arranged along the folding line of the connecting member.
[0012] In a preferred technical solution of the above Miura folding rack, the number of the first folding guide structures is multiple and they are spaced apart along the length direction of the connecting member; and / or
[0013] The number of the second folding guide structures is multiple and they are spaced apart along the length direction of the connecting member.
[0014] In a preferred technical solution of the above Miura folding rack, the angle between the extending direction of the first folding guide structure and the direction from the first inner surface towards the second inner surface is 10 to 60 degrees; and / or
[0015] The angle between the extending direction of the second folding guide structure and the direction from the first inner surface towards the second inner surface is 10 to 60 degrees.
[0016] In a preferred technical solution of the above Miura folding rack, the connecting member includes a first plate-shaped body and a second plate-shaped body that are spaced apart along its thickness direction. Two adjacent frame units are connected by the first plate-shaped body and the second plate-shaped body. The first folding guide structure and the second folding guide structure are located between the first plate-shaped body and the second plate-shaped body, and the two surfaces of the first plate-shaped body opposite to the second plate-shaped body are the first inner surface and the second inner surface respectively.
[0017] In the preferred technical solution of the above-mentioned Miura folding rack, a clamping groove is provided on the side surface of the frame unit, and a clamping structure adapted to the clamping groove is provided at the end of the connecting member along its length direction, and the clamping structure is located in the clamping groove to connect the connecting member with the frame unit.
[0018] In the preferred technical solution of the above-mentioned Miura folding rack, the clamping groove is strip-shaped and extends along the length direction of the side surface of the frame unit, and the clamping structure can slide along the length direction of the clamping groove.
[0019] In the preferred technical solution of the above-mentioned Miura folding rack, the end of the clamping groove along its length direction is open, so that the clamping structure can be inserted into the clamping groove; and / or
[0020] The frame unit includes four side frames connected end to end, and the clamping groove is provided on the side frame and extends along the length direction of the side frame.
[0021] In the preferred technical solution of the above-mentioned Miura folding rack, the shape of the frame unit is square, rectangular or parallelogram.
[0022] In a second aspect, the present invention further provides a photovoltaic power generation device, including the above-mentioned Miura folding rack.
[0023] In the case of adopting the above technical solution, the Miura folding rack of the present invention is folded by the Miura folding method, which can extremely compress the space and improve the folding ratio. Moreover, adjacent two frame units are connected by a connecting member with a fixed folding direction, and the bending direction of the connecting member arranged on the mountain line of the Miura folding rack is exactly opposite to the bending direction of the connecting member arranged on the valley line of the Miura folding rack, so that the Miura folding rack of the present application can be folded smoothly according to the Miura folding method.
[0024] Furthermore, the connecting member of the present invention is provided with a first folding guide structure and a second folding guide structure which are distributed at intervals along its length direction inside it. The first folding guide structure and the second folding guide structure extend obliquely from the first inner surface of the connecting member in a direction away from each other to the second inner surface of the connecting member opposite to the first inner surface, so that the connecting member can be bent more smoothly along the fixed direction. In addition, when the connecting member of the present application is in the unfolded state, there is no crease on its surface, which is beneficial to improving the aesthetics of the Miura folding rack.
[0025] Still further, the connecting member of the present invention is made such that the first folding guide structure and the second folding guide structure are symmetrically arranged, so that the connecting member can be bent more easily in the fixed bending direction.
[0026] Furthermore, by providing a plurality of first folding guide structures and second folding guide structures spaced apart from each other, the connecting member of the present utility model can be bent more easily in a fixed bending direction. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, in which:
[0028] Figure 1 is a schematic flow diagram of the Miura folding method;
[0029] Figure 2 is a schematic structural diagram of the Miura folding frame of the present application;
[0030] Figure 3 is a schematic assembly structure diagram of the frame unit and the connecting member of the present application Figure 1 ;
[0031] Figure 4 is a schematic assembly structure diagram of the frame unit and the connecting member of the present application Figure 2 ;
[0032] Figure 5 is a schematic assembly structure diagram of the frame unit and the connecting member of the present application Figure 3 ;
[0033] Figure 6 is a schematic structural diagram of the connecting member of the Miura folding frame of the present application.
[0034] LIST OF REFERENCE NUMERALS:
[0035] 1. Frame unit; 11. Frame; 111. Card slot;
[0036] 2. Connecting member; 21. First folding guide structure; 22. Second folding guide structure; 23. First plate-shaped body; 24. Second plate-shaped body; 25. Clamping structure. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0037] The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present utility model and are not intended to limit the protection scope of the present utility model. For example, although the specific embodiments described below are introduced in connection with a foldable photovoltaic awning (also known as a foldable solar panel), the technical solutions of the present application are equally applicable to other types of photovoltaic power generation devices and devices that require a foldable bracket. Such adjustments and changes to the application object do not deviate from the principle and scope of the present application and should all be limited within the protection scope of the present application.
[0038] It should be noted that in the description of the present utility model, the terms "upper", "lower", "left", "right" and other terms indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0039] In addition, it should be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "set", "connected", "installed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0040] Specifically, the present application provides a foldable photovoltaic awning. The foldable photovoltaic awning of the present application includes a Miura folding frame and solar panels installed on the Miura folding frame.
[0041] Among them, the Miura folding frame adopts the Miura folding method for folding, which can extremely compress the space and improve the folding ratio.
[0042] First, in combination with Figure 1 to introduce the basic principle of the Miura folding method. In Figure 1 a total of four figures are shown. Among them, from top to bottom, the first Figure 1 a is a schematic diagram in the fully unfolded state, the fourth Figure 1 d is a schematic diagram after folding, and the middle two Figure 1 b and 1c are schematic diagrams during the folding process.
[0043] When folding, adjacent units will be folded along the fold lines shown in Figure 1 a approximately. Among them, the dotted line represents the fold line that will be concave with respect to the drawing plane, and this fold line is denoted as the mountain line. The dash-dotted line represents the fold line that will be convex with respect to the drawing plane, and this fold line is denoted as the valley line. When starting to fold from the unfolded state, each unit will first mainly fold along the longitudinal fold line, and then fold along the transverse fold line. According to the principle of Miura folding, after first folding along the longitudinal fold line, there will automatically be a tendency to fold along the transverse fold line, so that it can be smoothly folded to the folded state. It should be noted that the "longitudinal" and "transverse" used herein are only for convenience of understanding and refer to the directions in Figure 1 a.
[0044] Next, in combination with Figures 2 to 6 a preferred embodiment of the Miura folding frame of the present application will be introduced.
[0045] As Figures 2 to 6 shown, the Miura folding rack of the present application includes a plurality of frame units 1 and a plurality of connecting members 2. Two adjacent frame units 1 are connected by a connecting member 2, and the connecting member 2 can be bent to fold two adjacent frame units 1.
[0046] Among them, the solar panel is fixedly installed on the frame unit 1, and the frame unit 1 can effectively protect the solar panel and prevent the solar panel from being damaged during the folding process. The frame unit 1 is preferably made of a composite material, which is light in weight and high in strength. The connecting member 2 is preferably made of plastic (such as polypropylene), etc., which is convenient for bending and deforming.
[0047] It should be noted that two adjacent frame units 1 can be connected by only one connecting member 2, or they can also be connected by a plurality of connecting members 2. The plurality of connecting members 2 are spaced apart along the length direction of the gap between the two frame units 1, etc. Such flexible adjustments and changes do not deviate from the principle and scope of the present application and should be limited within the protection scope of the present application.
[0048] In addition, it should be noted that the present application does not limit the specific connection method between the frame unit 1 and the connecting member 2. For example, the two can be connected by means of snap connection, plug connection or screw connection, etc.
[0049] Preferably, as Figures 3 to 6 shown, the side surface of the frame unit 1 is provided with a card slot 111, and the end of the connecting member 2 along its length direction is provided with a snap structure 25 adapted to the card slot 111. The snap structure 25 is located in the card slot 111 to connect the connecting member 2 and the frame unit 1.
[0050] That is to say, the present application connects the connecting member 2 and the frame unit 1 by means of snap connection.
[0051] Exemplarily, as Figures 3 to 6 shown, each of the left and right ends of the connecting member 2 is provided with a snap structure 25. The frame unit 1 includes four side frames 11 connected end to end. The side surface of each side frame 11 is provided with a card slot 111. The shape and size of the snap structure 25 on the connecting member 2 are adapted to the card slot 111 on the side frame 11. In the installed state, the snap structure 25 at the left end of the connecting member 2 is snap-connected to the card slot 111 on one frame unit 1, and the snap structure 25 at the right end of the connecting member 2 is snap-connected to the card slot 111 on another frame unit 1.
[0052] It should be noted that the shape of the frame unit 1 can be a square, a rectangle or a parallelogram.
[0053] Preferably, as Figures 3 to 6As shown, the card slot 111 is strip-shaped and extends along the length direction of the side surface of the frame unit 1, and the clamping structure 25 can slide along the length direction of the card slot 111.
[0054] Exemplarily, the card slot 111 on the frame unit 1 extends along the length direction of the frame border 11, and the length of the card slot 111 is equal to the length of the frame border 11. Looking from Figure 3 and Figure 4 above, the card slot 111 connected to the connecting member 2 shown in the figure extends along the Y direction. Only one connecting member 2 is provided between two adjacent frame units 1. One clamping structure 25 of the connecting member 2 is clamped to the left frame unit 1, and the other clamping structure 25 of the connecting member 2 is clamped to the right frame unit 1. As Figure 3 shown, in the unfolded state, the connecting member 2 extends substantially along the Y direction and can basically fill the gap between the left and right frame units 1. When folding is required, as Figure 4 shown, pull the frame unit 1 along the X direction to increase the gap between the two frame units 1. The clamping structure 25 at the end of the connecting member 2 slides along the card slot 111 on the frame unit 1, and finally the connecting member 2 extends substantially along the X direction. Next, as Figure 5 shown, bend the connecting member 2 to fold the two frame units 1.
[0055] Preferably, as Figure 5 shown, the ends of the card slot 111 along its length direction are open, so that the clamping structure 25 can be inserted into the card slot 111.
[0056] By making the ends of the card slot 111 on the frame unit 1 open, during assembly, the clamping structure 25 on the connecting member 2 can enter the card slot 111 through the open port, which is beneficial to improving the assembly efficiency.
[0057] It should be noted that both ends of the card slot 111 can be open, or only one of the ends can be open.
[0058] Preferably, as Figures 2 to 6 shown, the connecting member 2 of the present application has a fixed bending direction. The bending direction of the connecting member 2 arranged on the mountain line of the Miura folding rack is opposite to the bending direction of the connecting member 2 arranged on the valley line of the Miura folding rack.
[0059] That is to say, the bending direction of the connecting member 2 of the present application is fixed. Exemplarily, as Figure 6The shown connecting member 2, when the connecting member 2 is bent under force, it can only be bent downward along the direction indicated by the arrow. According to the bending characteristics of the connecting member 2, during assembly, the bending direction of the connecting member 2 arranged on the ridge line of the Miura folding frame can be downward, and the bending direction of the connecting member 2 arranged on the valley line of the Miura folding frame can be upward. That is, the bending direction of the connecting member 2 arranged on the ridge line of the Miura folding frame is exactly opposite to the bending direction of the connecting member 2 arranged on the valley line of the Miura folding frame. In this way, the Miura folding frame can be successfully folded according to the Miura folding method.
[0060] Moreover, when the connecting member 2 of the present application is in the unfolded state, there are no creases on its surface, which is beneficial to improving the aesthetics of the Miura folding frame.
[0061] Preferably, as Figure 6 shown, the interior of the connecting member 2 of the present application is provided with a first folding guiding structure 21 and a second folding guiding structure 22 that are spaced apart along its length direction. The first folding guiding structure 21 and the second folding guiding structure 22 extend obliquely from the first inner surface of the connecting member 2 in a direction away from each other to the second inner surface of the connecting member 2 opposite to the first inner surface. The connecting member 2 bends in the direction from the first inner surface towards the second inner surface at the position between the first folding guiding structure 21 and the second folding guiding structure 22.
[0062] Exemplarily, the connecting member 2 is a strip-shaped plate structure, and its interior has a cavity. The top surface of the cavity is the first inner surface of the connecting member 2, and the bottom surface of the cavity is the second inner surface of the connecting member 2. The first inner surface is located above the second inner surface. The first folding guiding structure 21 and the second folding guiding structure 22 are located in this cavity. The first folding guiding structure 21 is located on the left side, and the second folding guiding structure 22 is located on the right side. The first folding guiding structure 21 extends obliquely leftward from the first inner surface of the connecting member 2 to the second inner surface of the connecting member 2, and the second folding guiding structure 22 extends obliquely rightward from the first inner surface of the connecting member 2 to the second inner surface of the connecting member 2. That is to say, the inclination directions of the first folding guiding structure 21 and the second folding guiding structure 22 are opposite, and the two are approximately arranged in an "eight" shape. Figure 6 The arrow in points from the first inner surface of the connecting member 2 to the second inner surface of the connecting member 2. When the connecting member 2 is bent under force, it bends along the direction indicated by the arrow.
[0063] Preferably, as Figure 6 shown, the first folding guiding structure 21 and the second folding guiding structure 22 are symmetrically arranged along the folding line of the connecting member 2.
[0064] The broken line of the connecting member 2 is located between the first folding guiding structure 21 and the second folding guiding structure 22. By symmetrically arranging the first folding guiding structure 21 and the second folding guiding structure 22, the connecting member 2 can be bent more easily in a fixed bending direction.
[0065] Preferably, as Figure 6 shown, the number of the first folding guiding structures 21 is multiple and they are distributed at intervals along the length direction of the connecting member 2.
[0066] Exemplarily, the number of the first folding guiding structures 21 is three, and the three first folding guiding structures 21 are distributed at intervals along the length direction of the connecting member 2.
[0067] Preferably, as Figure 6 shown, the number of the second folding guiding structures 22 is multiple and they are distributed at intervals along the length direction of the connecting member 2.
[0068] Exemplarily, the number of the second folding guiding structures 22 is three, and the three second folding guiding structures 22 are distributed at intervals along the length direction of the connecting member 2.
[0069] Preferably, as Figure 6 shown, the angle between the extending direction of the first folding guiding structure 21 and the direction from the first inner surface towards the second inner surface is 10 to 60 degrees.
[0070] Exemplarily, there is an included angle a between the extending direction of the first folding guiding structure 21 and the direction from the first inner surface towards the second inner surface, and the angle of this included angle a can be 10 degrees, 20 degrees, 30 degrees, 40 degrees, 50 degrees or 60 degrees, etc.
[0071] Preferably, as Figure 6 shown, the angle between the extending direction of the second folding guiding structure 22 and the direction from the first inner surface towards the second inner surface is 10 to 60 degrees.
[0072] Exemplarily, there is an included angle b between the extending direction of the second folding guiding structure 22 and the direction from the first inner surface towards the second inner surface, and the angle of this included angle b can be 10 degrees, 20 degrees, 30 degrees, 40 degrees, 50 degrees or 60 degrees, etc.
[0073] Preferably, as Figure 5 and Figure 6As shown, the connecting member 2 of the present application includes a first plate-shaped body 23 and a second plate-shaped body 24 that are spaced apart along its thickness direction. Two adjacent frame units 1 are connected by the first plate-shaped body 23 and the second plate-shaped body 24. The first folding guide structure 21 and the second folding guide structure 22 are located between the first plate-shaped body 23 and the second plate-shaped body 24. The two opposite surfaces of the first plate-shaped body 23 and the second plate-shaped body 24 are the first inner surface and the second inner surface respectively.
[0074] Exemplarily, the left ends of the first plate-shaped body 23 and the second plate-shaped body 24 jointly form a clamping structure 25, and the right ends of the first plate-shaped body 23 and the second plate-shaped body 24 also jointly form a clamping structure 25. The two clamping structures 25 are respectively clamped with the clamping grooves 111 on the frame edges 11 of two adjacent frame units 1. The first plate-shaped body 23 is located above the second plate-shaped body 24. The lower surface of the first plate-shaped body 23 is the first inner surface of the connecting member 2, and the upper surface of the second plate-shaped body 24 is the second inner surface of the connecting member 2. The top and bottom ends of the first folding guide structure 21 are respectively connected to the first plate-shaped body 23 and the second plate-shaped body 24, and the top and bottom ends of the second folding guide structure 22 are also respectively connected to the first plate-shaped body 23 and the second plate-shaped body 24. During specific assembly, the first plate-shaped body 23 of the connecting member 2 arranged on the mountain line of the Miura folding is located above the second plate-shaped body 24, and the bending direction is downward. The first plate-shaped body 23 of the connecting member 2 arranged on the valley line of the Miura folding is located below the second plate-shaped body 24, and the bending direction is upward.
[0075] Those skilled in the art can understand that although some of the embodiments described herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means that it is within the scope of the present application and forms different embodiments. For example, in the claims of the present application, any one of the claimed embodiments can be used in any combination.
[0076] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.
Claims
1. A Miura folding rack, characterized in that It includes a plurality of frame units and a plurality of connecting members. Two adjacent frame units are connected by the connecting members, and the connecting members can be bent to fold the two adjacent frame units. The connecting members have a fixed bending direction. The bending direction of the connecting members arranged on the mountain line of the Miura folding rack is opposite to the bending direction of the connecting members arranged on the valley line of the Miura folding rack, so that the Miura folding rack can be folded according to the Miura folding method.
2. The Miura folding rack according to claim 1, wherein, The interior of the connecting member is provided with a first folding guide structure and a second folding guide structure that are spaced apart along its length direction. The first folding guide structure and the second folding guide structure extend obliquely from the first inner surface of the connecting member in a direction away from each other to the second inner surface of the connecting member opposite to the first inner surface. The connecting member bends at a position between the first folding guide structure and the second folding guide structure in a direction from the first inner surface towards the second inner surface.
3. The Miura folding rack according to claim 2, characterized in that, The first folding guide structure and the second folding guide structure are symmetrically arranged along the folding line of the connecting member.
4. The Miura folding rack according to claim 2, characterized in that, The number of the first folding guide structures is multiple and they are spaced apart along the length direction of the connecting member; and / or The number of the second folding guide structures is multiple and they are spaced apart along the length direction of the connecting member; and / or The angle between the extending direction of the first folding guide structure and the direction from the first inner surface towards the second inner surface is 10 to 60 degrees; and / or The angle between the extending direction of the second folding guide structure and the direction from the first inner surface towards the second inner surface is 10 to 60 degrees.
5. The Miura folding rack according to claim 2, characterized in that, The connecting member includes a first plate-shaped body and a second plate-shaped body that are spaced apart along its thickness direction. Two adjacent frame units are connected by the first plate-shaped body and the second plate-shaped body. The first folding guide structure and the second folding guide structure are located between the first plate-shaped body and the second plate-shaped body. The two opposite surfaces of the first plate-shaped body and the second plate-shaped body are the first inner surface and the second inner surface respectively.
6. The Miura folding rack according to claim 1, characterized in that, The side surface of the frame unit is provided with a card slot, and the end of the connecting member along its length direction is provided with a clamping structure adapted to the card slot. The clamping structure is located in the card slot to connect the connecting member with the frame unit.
7. The Miura folding rack according to claim 6, characterized in that, The card slot is strip-shaped and extends along the length direction of the side surface of the frame unit. The clamping structure can slide along the length direction of the card slot.
8. The Miura folding rack according to claim 7, characterized in that, The end of the card slot along its length direction is open, so that the clamping structure can be inserted into the card slot; and / or The frame unit includes four side frames connected end to end, and the card slot is arranged on the side frame and extends along the length direction of the side frame.
9. The Miura folding rack according to any one of claims 1 to 8, characterized in that The shape of the frame unit is square, rectangular or parallelogram.
10. A photovoltaic power generation device, characterized in that, It includes the Miura folding rack according to any one of claims 1 to 9.