Rapid photovoltaic module fixing structure and photovoltaic power station

Abstract

The utility model discloses a rapid fixing structure for a photovoltaic module and a photovoltaic power station, belongs to the technical field of photovoltaic installation, and solves the problems of low fixing speed and low efficiency caused by the fact that a short C edge is fixed by a bolt in the prior art. The frame of the photovoltaic module is provided with the short C edge, and the rapid fixing structure comprises a fixing block and an elastic connecting assembly, the fixing block is provided with a vertical plate located on the first side of the short C edge and a clamping plate located on the second side of the short C edge, a clamping groove for clamping the short C edge is formed between the clamping plate and the vertical plate, the vertical plate is attached to the inner side face of the photovoltaic module frame, a first fixing hole is formed in the vertical plate, and a prefabricated hole is formed in the photovoltaic module frame. The elastic connecting assembly penetrates through the first fixing hole and the prefabricated hole through elastic deformation and is provided with an upper limiting part matched with the upper end of the first fixing hole in a limiting mode and a lower limiting part matched with the lower end of the prefabricated hole in a limiting mode.

Description

Technical field

[0001] The utility model belongs to the technical field of photovoltaics, and in particular relates to a photovoltaic component installation structure. [Background Technology]

[0002] Shortening the C-side of a photovoltaic module can reduce the cost of the module to a certain extent, and the applicant has already promoted its use. In order to solve the problem of how to firmly fix the short C-side of the module after it is shortened, the applicant has done a lot of research. See the Chinese utility model patent with authorization announcement number CN220359064 U, which discloses a short C-side photovoltaic module fixing device, which belongs to the field of photovoltaic installation technology. The photovoltaic module frame is provided with a short C-side. The short C-side photovoltaic module fixing device is provided with a vertical plate located on the first side of the short C-side and a clamping plate located on the second side of the short C-side and perpendicular to the vertical plate. A clamping groove is formed between the clamping plate and the vertical plate to clamp the short C-side. The vertical plate fits the inner side of the photovoltaic module frame and is connected to a fastener fixed to the photovoltaic module frame. When the fixing device is connected to the photovoltaic module frame, the clamping groove is clamped on the short C-side, and bolts are used as fasteners to connect the vertical plate and the frame. However, the bolt fixing method also has the problems of slow installation speed and low installation efficiency. [Utility Model Content]

[0003] In view of the deficiencies in the existing technology, the technical problem to be solved by the present invention is to provide a photovoltaic component fast fixing structure and a photovoltaic power station, so as to solve the problem that the short C side in the existing technology is fixed with bolts, resulting in slow fixing speed and low efficiency.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] First, a photovoltaic component quick fixing structure is provided, and the photovoltaic component frame is provided with a short C-side. The quick fixing structure includes a fixing block and an elastic connection component. The fixing block is provided with a vertical plate located on the first side of the short C-side and a clamping plate located on the second side of the short C-side. A clamping groove clamped on the short C-side is formed between the clamping plate and the vertical plate. The vertical plate fits the inner side of the photovoltaic component frame. A fixing hole 1 is provided on the vertical plate. A prefabricated hole is provided on the photovoltaic component frame. The elastic connection component passes through the fixing hole 1 and the prefabricated hole through elastic deformation. The elastic connection component is provided with an upper limit portion that cooperates with the upper end limit of the fixing hole 1 and a lower limit portion that cooperates with the lower end limit of the prefabricated hole.

[0006] Preferably, the elastic connection assembly includes a first connection member, a second connection member and an elastic member arranged between the first connection member and the second connection member, the bottom of the first connection member and the second connection member is provided with the lower limit portion, and the lower limit portions on the first connection member and the second connection member extend in opposite directions respectively, and the upper portions of the first connection member and the second connection member are provided with the upper limit portion; the first connection member and the second connection member move toward the middle to extrude the elastic member so that the lower limit portion passes through the fixing hole 1 and the prefabricated hole, and after the lower limit portion passes through the fixing hole 1 and the prefabricated hole, the upper limit portion cooperates with the upper end limit of the fixing hole 1, and the first connection member and the second connection member are elastically driven to move back to both sides, and the lower limit portion cooperates with the lower end limit of the prefabricated hole.

[0007] Preferably, the first fixing hole and the prefabricated hole are elongated holes extending along the length direction of the photovoltaic component frame, and the first connecting member and the second connecting member are located on both sides of the length of the elongated hole.

[0008] Preferably, the first connecting member and the second connecting member are both L-shaped structures, including vertical sides and bottom sides perpendicular to each other, the lower limit portion is arranged on the bottom side, the vertical side is a structure with a width at the top and a narrowness at the bottom, and an upper limit portion is formed at the middle step.

[0009] Preferably, the elastic member is a compression spring.

[0010] Preferably, a telescopic rod is connected between the first connecting member and the second connecting member, and the compression spring is sheathed on the telescopic rod.

[0011] Preferably, the first connecting member and the second connecting member are provided with positioning portions that cooperate with the ends of the compression springs.

[0012] Preferably, the fixing block is also provided with a base plate, which is vertically connected to the side of the vertical plate near the short C side, and the clamping plate extends from the side of the base plate to the side of the photovoltaic component frame. The base plate is provided with a second fixing hole, and the second fixing hole is connected with an installation bolt.

[0013] Preferably, the length of the splint extending from the inner end surface of the short C side toward the outer side of the photovoltaic module frame is greater than the height of the short C side; and / or, the thickness of the splint is less than the thickness of the vertical plate and the bottom plate; and / or, the fixing block is an aluminum alloy or stainless steel profile.

[0014] In addition, a photovoltaic power station is provided, comprising photovoltaic modules, wherein the photovoltaic modules are fixed by using the quick fixing structure.

[0015] The utility model adopts the above technical solution, which has the following beneficial effects:

[0016] 1. An elastic connection assembly is used to connect the fixed block and the frame, wherein a fixing hole 1 is provided on the vertical plate of the fixed block, and a prefabricated hole is provided on the frame of the photovoltaic module. The elastic connection assembly is elastically deformable, and thus passes through the fixing hole 1 and the prefabricated hole through elastic deformation. Because the elastic connection assembly includes an upper limit portion that cooperates with the upper end of the fixing hole 1 and a lower limit portion that cooperates with the lower end of the prefabricated hole, after the elastic connection assembly passes through the fixing hole 1 and the prefabricated hole, the upper limit portion cooperates with the upper end of the fixing hole 1. Simultaneously, the elastic return action of the elastic connection assembly allows the lower limit portion to cooperate with the lower end of the prefabricated hole. Thus, the fixing block and the photovoltaic module frame are relatively fixed in both vertical directions. Moreover, compared with bolt fixing, it can be faster and more efficient.

[0017] Among them, the fixing of the fixing block and the short C side adopts the existing technology, and a clamping groove clamped on the short C side is formed between the clamping plate and the vertical plate. After the fixing block is fixed to the photovoltaic bracket or other positions, one side wall of the clamping groove can press the short C side. Therefore, while fixing the frame of the photovoltaic module, it can prevent the fixing block and the short C side from falling off, thereby ensuring the reliability of the short C side fixation.

[0018] In addition, when connecting the fixing block to the photovoltaic module frame, the clamping groove is clamped on the short C side, which can locate the relative position of the photovoltaic module frame and the connection part of the vertical plate and the fastener, making it convenient for the subsequent elastic connection component to fix the vertical plate and the photovoltaic module frame.

[0019] 2. The elastic connection assembly includes a first connector, a second connector, and an elastic member disposed between the first and second connectors. Lower limit portions are provided at the bottoms of the first and second connectors, and upper limit portions are provided at the tops of the first and second connectors. Therefore, when the first and second connectors move toward the center and squeeze the elastic member, the lower limit portion contracts toward the center, allowing the entire elastic connection assembly to pass through the first fixing hole and the prefabricated hole. After the lower limit portion passes through the first fixing hole and the prefabricated hole, the upper limit portion engages with the upper end of the first fixing hole, while the elastic member elastically drives the first and second connectors to move back toward their respective positions, engaging the lower limit portion with the lower end of the prefabricated hole. In this manner, the fixing block is not only limited in the vertical direction, but also in the direction parallel to the vertical plate, thereby securing the fixing block relative to the photovoltaic module frame.

[0020] 3. Since the fixing hole 1 and the prefabricated hole are elongated holes extending along the length direction of the photovoltaic module frame, such as rectangular holes, the first connecting member and the second connecting member are located on both sides of the length of the elongated hole. Therefore, the first connecting member and the second connecting member have movable space along the length direction of the elongated hole. During installation, the first connecting member and the second connecting member squeeze the elastic member toward the middle, so that the lower limit part can pass through the fixing hole 1 and the prefabricated hole. After the first connecting member and the second connecting member are released, the elastic member returns to its original shape and pushes the first connecting member and the second connecting member to move toward both sides of the elongated hole, so that the lower limit part cooperates with the lower end limit of the prefabricated hole.

[0021] 4. Since the first connecting member and the second connecting member are both L-shaped structures, including vertical sides and bottom sides that are perpendicular to each other, a lower limit portion is formed on the bottom side. In addition, the vertical sides are wide at the top and narrow at the bottom, thus forming an upper limit portion at the middle step.

[0022] 5. The compression spring has a large elastic force, ensuring that the fixing block is securely fixed to the photovoltaic module frame. Since the first and second connectors are provided with positioning parts that match the ends of the compression spring, it is convenient to position the spring ends when installing the spring.

[0023] 6. A telescopic rod is connected between the first connecting member and the second connecting member. The telescopic rod can be relatively extended and retracted to change the relative distance between the first connecting member and the second connecting member bracket. The compression spring is sleeved on the telescopic rod and is used to position the radial position of the spring. Therefore, the compression spring can only be compressed and extended axially. When returning to its original state, it pushes the first connecting member and the second connecting member to move to both sides of the elongated hole, so that the lower limit portion cooperates with the lower end limit of the prefabricated hole.

[0024] 7. The bottom plate and the vertical plate are vertically connected on the side of the short C-side, and the bottom plate is connected with mounting bolts, which are used to fix the fixing block to the photovoltaic bracket or other locations. Since the length of the clamp extending from the inner end surface of the short C-side to the outer side of the photovoltaic module frame is greater than the height of the short C-side, the short C-side can be reliably clamped; since the clamp is subjected to less force, the thickness of the clamp is less than that of the vertical plate and the bottom plate, which can reduce material costs while meeting the use requirements. Since the vertical plate, clamp and bottom plate are an integrally formed profile, they can be made of high-strength aluminum alloy or stainless steel, which is easy to process and has high strength to ensure that the photovoltaic module with the short C-side is reliably fixed.

[0025] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings.

Brief Description of the Drawings

[0026] The utility model is further described below with reference to the accompanying drawings:

[0027] Figure 1 Schematic diagram of the quick fixing structure of short C-side photovoltaic modules Figure 1;

[0028] Figure 2 Schematic diagram of the quick fixing structure of short C-side photovoltaic modules Figure 2 ;

[0029] Figure 3 Schematic diagram of the quick fixing structure of short C-side photovoltaic modules Figure 3 ;

[0030] Figure 4 This is a schematic diagram of the short C-side photovoltaic module frame;

[0031] Figure 5 It is a structural diagram of the fixed block;

[0032] Figure 6 Schematic diagram of the structure of the elastic connection component Figure 1 ;

[0033] Figure 7 Schematic diagram of the structure of the elastic connection component Figure 2 ;

[0034] Figure numerals: frame 100, prefabricated hole 101, side A 11, side B 12, side C 13, fixing block 2, vertical plate 21, fixing hole one 211, clamping plate 22, clamping groove 23, bottom plate 24, fixing hole two 241, elastic connection component 3, side connection part 31, bottom edge 311, vertical edge 312, middle step 313, compression spring 32, telescopic rod 33, first rod section 331, second rod section 332. [Specific implementation method]

[0035] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0036] It will be understood by those skilled in the art that, unless there is any conflict, the features in the following embodiments and implementations may be combined with each other.

[0037] The terms used in this disclosure are intended solely to describe specific embodiments and are not intended to limit this disclosure. For example, terms such as "upper," "lower," "inner," and "outer" that indicate orientation or positional relationships are based solely on the orientation or positional relationships of photovoltaic modules when installed. These terms are used solely to facilitate and simplify the description of this disclosure and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0038] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0039] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0040] Common photovoltaic modules are usually rectangular in shape with frames around them. Figure 4 As shown, each side of the frame 100 is provided with an A side 11, a B side 12 and a C side 13, wherein the A side 11 serves to fix the glass of the photovoltaic module, and the C side 13 is used to be installed and fixed with a photovoltaic bracket or other structure. In this embodiment, the size of the C side is shortened compared to conventional modules, so it is called a short C side.

[0041] Reference Figures 1 to 7 As shown, this embodiment provides a photovoltaic module quick fixing structure, including a fixing block 2 and an elastic connection component 3, the fixing block 2 is provided with a vertical plate 21 located on the first side of the short C side and a clamping plate 22 located on the second side of the short C side and perpendicular to the vertical plate 21, a clamping groove 23 clamped on the short C side is formed between the clamping plate 22 and the vertical plate 21, the vertical plate 21 is attached to the inner side of the photovoltaic module frame and is connected to the elastic connection component 3.

[0042] For this quick fixing structure, the clamping and fixing method of the fixing block and the short C side is the same as the existing technology, and a clamping groove for clamping the short C side is formed between the clamping plate and the vertical plate. After the fixing block is fixed to the photovoltaic bracket or other positions, one side wall of the clamping groove can press the short C side. Therefore, while fixing the photovoltaic component frame, it can prevent the fixing block and the short C side from falling off, thereby ensuring the reliability of the short C side fixation.

[0043] Moreover, when connecting the fixing block to the photovoltaic module frame, the clamping groove is clamped on the short C side, which can locate the relative position of the photovoltaic module frame and the connection part of the vertical plate and the fastener, making it convenient for the subsequent elastic connection component to fix the vertical plate and the photovoltaic module frame.

[0044] In this embodiment, the vertical plate 21 is provided with a fixing hole 1 211, and the photovoltaic module frame 100 is provided with a prefabricated hole 101, and can be integrally formed with the photovoltaic module frame 100. The elastic connecting component 3 elastically deforms through the fixing hole 1 211 and the prefabricated hole 101. The elastic connecting component 3 is provided with an upper limit portion that engages with the upper end of the fixing hole 1 and a lower limit portion that engages with the lower end of the prefabricated hole.

[0045] Compared to existing bolt-fixing methods, this method uses an elastic connection assembly to connect the fixing block and the frame. The fixing block's vertical plate is provided with a fixing hole 1, and the photovoltaic module frame is provided with a prefabricated hole. The elastic connection assembly is elastically deformable, thus elastically deforming to pass through both the fixing hole 1 and the prefabricated hole. Because the elastic connection assembly includes an upper limit portion that engages with the upper end of the fixing hole 1 and a lower limit portion that engages with the lower end of the prefabricated hole, after the elastic connection assembly passes through the fixing hole 1 and the prefabricated hole, the upper limit portion engages with the upper end of the fixing hole 1. Simultaneously, the elastic return action of the elastic connection assembly causes the lower limit portion to engage with the lower end of the prefabricated hole. This results in positional limits in both vertical directions, ensuring relative fixation between the fixing block and the photovoltaic module frame. Furthermore, compared to bolt-fixing, this method can be faster and more efficient.

[0046] Specifically, the elastic connection assembly 3 includes a first connector, a second connector, and an elastic member disposed between the first and second connectors. The structures of the first and second connectors can be identical and are collectively referred to herein as side connectors 31. Lower stoppers are provided at the bottoms of the first and second connectors, and the lower stoppers on the first and second connectors extend in opposite directions, respectively. Upper stoppers are provided on the tops of the first and second connectors. The first and second connectors move toward the center, squeezing the elastic member so that the lower stopper passes through fixing hole 1 and the prefabricated hole. After the lower stopper passes through fixing hole 1 and the prefabricated hole, the upper stopper engages with the upper end of fixing hole 1. The elastic drive of the elastic member causes the first and second connectors to move back toward their original positions, engaging the lower stopper with the lower end of the prefabricated hole. This ensures not only vertical and horizontal position limits, but also position limits parallel to the vertical plate, thereby securing the fixing block relative to the photovoltaic module frame.

[0047] Further, such as Figure 4As shown, the fixing hole 1 211 and the prefabricated hole 101 are elongated holes extending along the length direction of the photovoltaic module frame, and the first connector and the second connector are located on both sides of the length of the elongated hole. Here, the elongated hole can be a rectangular hole, and the first connector and the second connector have a movable space along the length direction of the elongated hole, so that the first connector and the second connector can move along the length direction on both sides of the length of the elongated hole. During installation, the first connector and the second connector squeeze the elastic member toward the middle, so that the lower limit part can pass through the fixing hole 1 and the prefabricated hole. After the first connector and the second connector are released, the elastic member returns to its original shape and pushes the first connector and the second connector to move toward the two sides of the elongated hole, so that the lower limit part cooperates with the lower end limit of the prefabricated hole length end.

[0048] Specifically, the first and second connectors are both L-shaped, comprising mutually perpendicular vertical sides 312 and a bottom side 311. A lower stop is provided on the bottom side 311, while the vertical sides are wide at the top and narrow at the bottom, with an upper stop formed at a middle step 313. The first and second connectors can be made of profiles or sheet metal, with the upper and lower stop integrally formed, eliminating the need for additional processing.

[0049] In this embodiment, the elastic member is a compression spring 32. Compared with conventional elastic members such as rubber, the compression spring has greater elastic deformation, which can ensure the reliability of the lower limit portion and the lower end of the prefabricated hole. Of course, it can also be rubber or silicone.

[0050] In addition, a telescopic rod 33 is connected between the first and second connectors, and the compression spring 32 is sheathed on the telescopic rod 33. The telescopic rod 33 includes a first rod section 331 and a second rod section 332. The diameter of the first rod section is larger than that of the second rod section, and the two rod sections can be relatively telescopic. Since the telescopic rod can be relatively telescopic, the relative distance between the first and second connector brackets changes. The compression spring is sheathed on the telescopic rod and is used to position the radial position of the spring. Therefore, the compression spring can only be compressed and stretched axially. When returning to its original state, it pushes the first and second connectors to move toward the sides of the elongated hole, so that the lower limit portion cooperates with the lower end limit of the prefabricated hole. In addition, the first and second connectors are provided with a positioning portion, such as a positioning hole, that cooperates with the end of the compression spring to facilitate positioning of the spring end when installing the spring.

[0051] In order to fix the photovoltaic module to the photovoltaic bracket, the fixing block 2 is also provided with a base plate 24, which is vertically connected to the side of the vertical plate on the short C side, and the clamping plate extends from the side of the base plate to the outside of the photovoltaic module frame. The base plate is connected with a mounting bolt for connecting to the photovoltaic bracket, and a fixing hole 241 is provided on the base plate for connecting with the mounting bolt.

[0052] Furthermore, the length of the clamp extending from the inner end surface of the short C-side toward the outer side of the photovoltaic module frame is greater than the height of the short C-side. This ensures reliable clamping of the short C-side. Furthermore, the thickness of the clamp is less than that of the vertical and bottom plates. Because the clamp is subjected to less force, its thickness is less than that of the vertical and bottom plates, thus meeting operational requirements while reducing material costs.

[0053] In this embodiment, the fixing block is made of aluminum alloy or stainless steel. Specifically, it can be made of high-strength aluminum alloy or stainless steel, which is not only easy to process but also has high strength to ensure the short C-side photovoltaic module is securely fixed. It is understood that the clamping plate and the vertical plate can also be connected using other methods, such as bolts and welding, but of course, these methods are not as reliable as a one-piece structure.

[0054] The above-mentioned photovoltaic component quick fixing structure is applied in a photovoltaic power station, and the photovoltaic components are fixed using the quick fixing structure.

[0055] The above description is merely a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Those skilled in the art will understand that the utility model includes, but is not limited to, the contents described in the drawings and the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the utility model are intended to be included within the scope of the claims.

Claims

1. A photovoltaic module fast fixing structure, the photovoltaic module frame is provided with a short C side, characterized in that: The quick fixing structure includes a fixing block and an elastic connection component, the fixing block is provided with a vertical plate located on the first side of the short C side and a clamping plate located on the second side of the short C side, a clamping groove clamped on the short C side is formed between the clamping plate and the vertical plate, the vertical plate fits the inner side of the photovoltaic component frame, the vertical plate is provided with a fixing hole 1, the photovoltaic component frame is provided with a prefabricated hole, the elastic connection component passes through the fixing hole 1 and the prefabricated hole through elastic deformation, the elastic connection component is provided with an upper limit portion that cooperates with the upper end limit of the fixing hole 1 and a lower limit portion that cooperates with the lower end limit of the prefabricated hole.

2. A photovoltaic module fast fixing structure according to claim 1, characterized in that: The elastic connection assembly includes a first connection member, a second connection member, and an elastic member arranged between the first connection member and the second connection member, the bottom of the first connection member and the second connection member is provided with the lower limit portion, and the lower limit portions on the first connection member and the second connection member extend in two opposite directions respectively, and the upper portions of the first connection member and the second connection member are provided with the upper limit portion; The first connecting member and the second connecting member move toward the middle to extrude the elastic member so that the lower limit portion passes through the fixing hole 1 and the prefabricated hole, and after the lower limit portion passes through the fixing hole 1 and the prefabricated hole, the upper limit portion is matched with the upper end limit of the fixing hole 1, and the first connecting member and the second connecting member are elastically driven to move back to both sides, and the lower limit portion is matched with the lower end limit of the prefabricated hole.

3. A photovoltaic module fast fixing structure according to claim 2, characterized in that: The first fixing hole and the prefabricated hole are elongated holes extending along the length direction of the photovoltaic component frame, and the first connecting member and the second connecting member are located on both sides of the length of the elongated hole.

4. A photovoltaic module fast fixing structure according to claim 3, characterized in that: The first connecting member and the second connecting member are both L-shaped structures, including vertical sides and bottom sides that are perpendicular to each other, the lower limit portion is arranged on the bottom side, the vertical sides are wide at the top and narrow at the bottom and an upper limit portion is formed at the middle step.

5. The photovoltaic module fast fixing structure according to claim 2, characterized in that: The elastic member is a compression spring.

6. A photovoltaic module fast fixing structure according to claim 5, characterized in that: A telescopic rod is connected between the first connecting member and the second connecting member, and the compression spring is sleeved on the telescopic rod.

7. The photovoltaic module fast fixing structure according to claim 5, characterized in that: The first connecting member and the second connecting member are provided with positioning portions that cooperate with the ends of the compression springs.

8. The photovoltaic module fast fixing structure according to claim 1, characterized in that: The fixing block is also provided with a bottom plate, which is vertically connected to the side of the vertical plate near the short C side, and the clamping plate extends from the side of the bottom plate to the side of the photovoltaic component frame. The bottom plate is provided with a second fixing hole, and the second fixing hole is connected with a mounting bolt.

9. The photovoltaic module fast fixing structure according to claim 8, characterized in that: The length of the splint extending from the inner end surface of the short C side toward the outer side of the photovoltaic module frame is greater than the height of the short C side; and / or the thickness of the splint is less than the thickness of the vertical plate and the bottom plate; and / or the fixing block is an aluminum alloy or stainless steel profile.

10. A photovoltaic power station, comprising photovoltaic modules, characterized in that: The photovoltaic assembly is fixed using the quick fixing structure described in any one of claims 1 to 9.

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