Photovoltaic system and briquetting device thereof

Abstract

The utility model relates to a photovoltaic system and a briquetting device thereof. The pressing block device comprises a first pressing block, a second pressing block and a locking piece. The two ends, in the first direction, of the first pressing block are connected to the frames of the two adjacent photovoltaic assemblies in a pressed mode respectively. The second pressing block is arranged on the first pressing block, the second pressing block is provided with a crimping arm, and the crimping arm is used for penetrating through the first pressing block to be clamped with the corresponding frame; the locking piece sequentially penetrates through the second pressing block, the first pressing block and the supporting piece on the building to lock the second pressing block, the first pressing block and the supporting piece. The first pressing blocks are arranged on the frames of the two adjacent photovoltaic assemblies at the same time, and when the bolts are locked, the frames of the two adjacent photovoltaic assemblies can be pressed and fixed to the supporting pieces on the building through the first pressing blocks. Meanwhile, the crimping arm of the second pressing block is used for penetrating through the first pressing block to be clamped with the corresponding frame, so that the limiting effect of the pressing block device on the frame of the photovoltaic module is enhanced, and the risk that the photovoltaic module is separated from the pressing block device is reduced.

Description

Technical Field

[0001] This application relates to the field of photovoltaic system technology, and in particular to photovoltaic systems and their briquetting devices. Background Technology

[0002] With the increasing global demand for clean energy, photovoltaic (PV) power generation, as a clean and renewable energy source, has been widely applied and promoted. The expanding scale of PV projects has placed higher demands on the installation efficiency, stability, and safety of PV modules. Due to their large area and high power output, full-screen PV modules require more reliable fixing methods during installation to ensure stable operation under various environmental conditions.

[0003] In related technologies, photovoltaic modules are generally fixed to purlins using clamping blocks. During installation, the photovoltaic modules are placed on the purlins, and then the clamping blocks are pressed onto the frame of the photovoltaic modules. Bolts are then passed through the clamping blocks and purlins in sequence to lock the clamping blocks onto the purlins, while simultaneously pressing the photovoltaic modules onto the purlins using the clamping blocks.

[0004] However, when photovoltaic modules are subjected to upward loads, they are prone to deformation, which can cause the frame of the photovoltaic module to come off the pressure block. Utility Model Content

[0005] Therefore, it is necessary to provide a photovoltaic system and its clamping device to address the problem that photovoltaic modules are prone to detaching from the clamping block when subjected to an upward load.

[0006] A briquetting device, the briquetting device comprising:

[0007] The first pressing block is pressed onto the frame of two adjacent photovoltaic modules at both ends along the first direction;

[0008] The second pressure block is disposed on the first pressure block. The second pressure block has the crimping arms disposed on both sides along the first direction. The crimping arms are used to pass through the first pressure block to engage with the corresponding frame.

[0009] In one embodiment, the first pressing block includes a first base and snap-fit ​​arms respectively disposed on both sides of the first base along a first direction. The snap-fit ​​arms on both sides of the base are respectively used to snap-fit ​​with the frames of two adjacent photovoltaic modules, and the two ends of the first base along the first direction are respectively pressed onto the corresponding frames.

[0010] In one embodiment, the crimping arm passes through the first base to engage with a mating portion on the frame.

[0011] In one embodiment, the first base includes a through section and a connecting section arranged sequentially along a second direction, the snap-fit ​​arm is connected to the connecting section, and the crimping arm passes through the through section and snaps into the corresponding frame.

[0012] In one embodiment, the snap-fit ​​arm is capable of elastic deformation.

[0013] In one embodiment, the latching arm includes a straight section and a bent section connected in sequence and arranged at an angle. The bent section is located at the end of the straight section away from the first base. The bent section extends from the straight section toward the side closer to the locking member. A protruding hook is provided on the side wall of the bent section away from the first base. The hook is used to hook with the latching part on the frame.

[0014] In one embodiment, the pressing device includes a locking member that passes sequentially through the second pressing block, the first pressing block, and the support member to lock the three together.

[0015] In one embodiment, the second pressing block includes a second base, and the pressing arms are respectively provided on both sides of the second base along a first direction. The locking member passes through the second base, the first base, and the support member in sequence. The pressing block device also includes an elastic member, which is sleeved on the locking member and is disposed between the first base and the second base.

[0016] In one embodiment, along the direction from the second base to the first base, the two crimping arms extend toward each other on opposite sides.

[0017] In one embodiment, the two crimping arms have different projected lengths along the extension direction of the locking member.

[0018] A photovoltaic system includes a support, photovoltaic modules, and a pressing device. The photovoltaic modules have frames, and the pressing device simultaneously presses the frames of two adjacent photovoltaic modules onto the support. The frames are provided with mating parts, and the mating parts of the two adjacent frames are respectively used to engage with the pressing arm. A locking member is used to simultaneously fix a first pressing block and a second pressing block to the support.

[0019] In one embodiment, the mating part is a groove, and the crimping arm is used to extend into the groove; or the mating part is a protrusion, and the crimping arm has a groove, and the protrusion is used to extend into the groove.

[0020] In the aforementioned photovoltaic system and its clamping device, the first clamping block is simultaneously installed on the frames of two adjacent photovoltaic modules. When the bolts are tightened, the first clamping block can press and fix the frames of the two adjacent photovoltaic modules onto the support structure on the building. Simultaneously, the clamping arm of the second clamping block passes through the first clamping block to engage with the corresponding frame, thereby enhancing the clamping device's restraining effect on the photovoltaic module frames and reducing the risk of the photovoltaic modules detaching from the clamping device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the border structure in one embodiment.

[0022] Figure 2 This is a schematic diagram of the connection structure of the pressing device, photovoltaic module and support member in one embodiment.

[0023] Figure 3 This is a three-dimensional structural diagram of the pressing device when it is not installed in one embodiment.

[0024] Figure 4 This is a schematic diagram of the planar structure of the pressing device when it is not installed in one embodiment.

[0025] Figure 5 for Figure 2 A schematic diagram of the structure at point A in the middle.

[0026] Reference numerals: 100, First pressing block; 110, First base; 111, Through section; 112, Connecting section; 113, Support part; 114, Inclined surface; 120, Snap-fit ​​arm; 121, Straight section; 122, Bending section; 123, Hook part; 200, Second pressing block; 210, Second base; 220, Snap-fit ​​arm; 300, Locking element; 400, Frame; 430, First side wall; 431, Snap-fit ​​part; 440, Second side wall; 450, Third side wall; 451, Mating surface; 452, Mating part; 460, Mounting groove; 500, Support element; 600, Elastic element. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0029] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0033] Combination Figure 1 To facilitate understanding of this case, let's first introduce the photovoltaic module. The photovoltaic module includes a laminate and a frame surrounding the laminate. Two adjacent photovoltaic modules are designated as a first photovoltaic module and a second photovoltaic module, and these modules are arranged along a first direction OX. The frame 400 includes a first sidewall 430, a second sidewall 440, and a third sidewall 450 connected sequentially to form a mounting groove 460. A snap-fit ​​portion 431 is provided on the inner side of the first sidewall 430, and a mating surface 451 is provided on the inner side of the third sidewall 450. A pressing device is embedded into the corresponding mounting groove 460 on each side of the frame 400 along the first direction OX.

[0034] See Figure 2 and Figure 3 An embodiment of this application provides a pressing device including a first pressing block 100, a second pressing block 200, and a locking member 300. The first pressing block 100 is pressed onto the frames 400 of two adjacent photovoltaic modules at both ends along the first direction OX. The second pressing block 200 is disposed on the first pressing block 100, and the second pressing block 200 has pressing arms 220 on both sides along the first direction OX. The pressing arms 220 are used to pass through the first pressing block 100 to engage with the corresponding frames 400.

[0035] In this embodiment, the first pressing block 100 is simultaneously disposed on the frames 400 of two adjacent photovoltaic modules. When the bolts are tightened, the frames 400 of the two adjacent photovoltaic modules can be pressed and fixed to the support member 500 on the building by the first pressing block 100. At the same time, the pressing arm 220 of the second pressing block 200 is used to pass through the first pressing block 100 to engage with the corresponding frame 400, thereby enhancing the limiting effect of the pressing block device on the photovoltaic module frame 400 and reducing the risk of the photovoltaic module frame 400 coming off the pressing block device.

[0036] In some embodiments, the locking member 300 passes sequentially through the second pressing block 200, the first pressing block 100, and the support member 500 on the building to lock the three together. It also enables the first pressing block 100 to press against the frame 400 and the pressing arm 220 of the second pressing block 200 to engage with the corresponding frame 400.

[0037] In some embodiments, the first pressing block 100 includes a first base 110 and snap-fit ​​arms 120 respectively disposed on both sides of the first base 110 along the first direction OX. The snap-fit ​​arms 120 on both sides of the first base 110 are respectively used to snap-fit ​​with the frames 400 of two adjacent photovoltaic modules. The two ends of the first base 110 along the first direction OX are respectively pressed onto the corresponding frames 400.

[0038] In this embodiment, the first pressing block 100 is first pressed onto the frame 400 by the first base 110, and the pressing effect of the first base 110 on the frame 400 is good; at the same time, the first pressing block 100 is also engaged with the snap-fit ​​part 431 on the frame 400 by the snap-fit ​​arm 120, which further enhances the limiting effect of the first pressing block 100 on the frame 400.

[0039] Furthermore, in combination Figure 1 , Figure 2 as well as Figure 5 The crimping arm 220 passes through the first base 110 to engage with the mating part 452 on the frame 400.

[0040] In this embodiment, the first base 110 is pressed against the third sidewall 450 of the frame 400. When the photovoltaic module is subjected to an upward load, the third sidewall 450 of the frame 400 is easily dislodged from the first base 110. The pressing arm 220 of this application passes through the first base 110 to engage with the mating part 452 on the frame 400. The mating part 452 is disposed on the third sidewall 450. The pressing arm 220 can enhance the limiting effect of the pressing device on the third sidewall 450, thereby reducing the risk of the photovoltaic module dislodging from the pressing device.

[0041] Combination Figure 4 In some embodiments, the second pressing block 200 includes a second base 210, and pressing arms 220 are respectively provided on both sides of the second base 210 along the first direction OX. The locking member 300 passes through the second base 210, the first base 110 and the support member 500 in sequence. The pressing block device also includes an elastic member 600, which is sleeved on the locking member 300 and is disposed between the first base 110 and the second base 210.

[0042] In this embodiment, the locking element 300 is a bolt. At the factory, the elastic element 600 is fitted onto the locking element 300 of the pressing device. The locking element 300 passes sequentially through the second base 210 and the first base 110, thus connecting the entire pressing device as a single unit and improving the installation efficiency of the photovoltaic module. It is important to emphasize that the locking element 300 is in an unlocked state at the factory. When installing the pressing device, the photovoltaic module needs to be embedded into the mounting groove 460 of the frame 400. At this time, the elastic force of the elastic element 600 is used to keep the second pressing block 200 away from the first pressing block 100, preventing the crimping arm 220 from extending beyond the first base 110, which would make it difficult for the pressing device to be embedded into the mounting groove 460.

[0043] Combination Figure 3 In some embodiments, the first base 110 includes a through section 111 and a connecting section 112 arranged sequentially along the second direction OY. A snap-fit ​​arm 120 is connected to the connecting section 112, and a crimping arm 220 can pass through the through section 111 and snap-fit ​​with the frame 400. Wherein, if the pressing device is positioned in the middle of the two photovoltaic modules along the width direction, then the first direction OX is the width direction of the photovoltaic module, and the second direction OY is the length direction of the photovoltaic module.

[0044] In some embodiments, there are two connecting segments 112. The first base 110 includes connecting segments 112, through segments 111, and connecting segments 112 arranged sequentially along the second direction OY. That is, the pressing device is provided with snap-fit ​​arms 120 at both ends along the second direction OY, and a pressing arm 220 is provided between the two snap-fit ​​arms 120. Since the snap-fit ​​arms 120 and the pressing arm 220 exert different forces on the photovoltaic module, snap-fit ​​arms 120 are provided on both sides of the pressing arm 220 to ensure the force balance of the photovoltaic module along the second direction OY.

[0045] Meanwhile, since the snap-fit ​​arm 120 needs to elastically deform to snap into the corresponding frame 400, the two connecting sections 112 are set separately, which makes it easier to reduce the rigidity of the snap-fit ​​arm 120 and increase its elastic deformation capability.

[0046] In some other embodiments, there may be two snap-fit ​​segments. The first base 110 includes a through segment 111, a connecting segment 112 and a through segment 111 arranged sequentially along the second direction OY, which can also ensure the force balance of the photovoltaic module along the second direction OY.

[0047] In other embodiments, without considering the force balance of the photovoltaic module along the second direction OY, the number of the snap-fit ​​section and the pressing section is one each, as long as the pressing arm 220 can pass through the first base 110.

[0048] Combination Figure 4In some embodiments, the snap-fit ​​arm 120 is capable of elastic deformation.

[0049] This application thins the snap-fit ​​arm 120, enabling it to undergo elastic deformation. During photovoltaic system installation, the first photovoltaic module is installed first; then, one snap-fit ​​arm 120 is snapped into the frame 400 of the first photovoltaic module; next, the locking device is locked onto the support 500 by the locking member 300; finally, the second photovoltaic module is pushed along the first direction OX towards the side closest to the locking device, causing the second photovoltaic module to compress the other snap-fit ​​arm 120, resulting in elastic deformation and thus snapping the other snap-fit ​​arm 120 into the frame 400 of the second photovoltaic module. Because the snap-fit ​​arm 120 can undergo elastic deformation, the locking device can be directly locked by the locking member 300 during photovoltaic module installation, eliminating the need for repeated adjustments to the locking member 300 and improving installation efficiency.

[0050] Combination Figure 5 Furthermore, in some embodiments, a support portion 113 is provided on the side of the first base 110 away from the second base 210. The support portion 113 is used to ensure that there are gaps between the first base 110 and the support member 500 on both sides along the first direction OX.

[0051] Specifically, the bottom of the first base 110 is provided with two support portions 113, and there is a preset distance between the support portions 113 and the two ends of the first base 110 along the first direction OX. The two support portions 113 are used to support the first base 110, so that when the first base 110 is placed on the support member 500, there is a gap between the two ends of the first base 110 along the first direction OX and the support member 500, so that the third sidewall 450 of the frame 400 can extend into the gap, thereby pressing the frame 400 onto the support member 500 by the first pressing block 100. The preset distance is greater than or equal to the length of the third sidewall 450 of the frame 400.

[0052] Furthermore, the two support parts 113 have different heights, that is, the gaps on both sides of the support parts 113 are different. During installation, the side with the smaller gap of the first pressure block 100 is first embedded into the frame 400 of the first photovoltaic module, and then the pressure block device is fixed. Finally, the second photovoltaic module is pushed along the first direction OX towards the side closer to the pressure block device. At this time, since the gap on the side closer to the second photovoltaic module is larger, it is easy for the pressure block device to be easily embedded into the frame 400 of the second photovoltaic module.

[0053] Combination Figure 4In some embodiments, the first base 110 has a slope 114 on the side away from the second base 210, and along the direction from the middle to both sides of the first direction OX of the first base 110, the slope 114 gradually slopes away from the support member 500, and the two sides of the first base 110 along the first direction OX are respectively used to slide into the frame 400 through the slope 114.

[0054] Specifically, a mating surface 451 is provided on the third sidewall 450 of the frame 400. The inclination angle of the mating surface 451 is opposite to that of the inclined surface 114, so that when the first pressing block 100 is embedded into the mounting groove 460, the inclined surface 114 and the third sidewall 450 fit together. By setting the inclined surface 114, the pushing force can be reduced when the first base 110 is pushed into the frame 400 along the first direction OX.

[0055] In some embodiments, the snap-fit ​​arm 120 includes a straight section 121 and a bent section 122 connected sequentially and arranged at an angle. The bent section 122 is located at the end of the straight section 121 away from the first base 110, and extends from the straight section 121 toward the side near the locking member 300. A protruding hook portion 123 is provided on the side wall of the bent section 122 away from the first base 110, which is used to hook with the snap-fit ​​portion 431 on the frame 400. That is, the snap-fit ​​arm 120 is connected to the frame 400 by hooking, which facilitates quick connection between the two.

[0056] In some embodiments, along the direction from the second base 210 to the first base 110, the crimping arm 220 extends toward the opposite side.

[0057] In this embodiment, along the direction from the second base 210 to the first base 110, i.e., vertically downward, the crimping arms 220 extend to opposite sides, meaning the distance between the upper parts of the two crimping arms 220 is smaller, and the distance between their bottom parts is larger. The position of the mating portion 452 on the frame 400 defines the distance between the bottom parts of the two crimping arms 220. The smaller distance between the upper parts of the two crimping arms 220 facilitates reducing the overall volume of the second pressing block 200, making it easier to install the second pressing block 200 into the first pressing block 100. Simultaneously, it increases the distance between the crimping arms 220 and the locking arms 120, thereby preventing the elastic deformation of the locking arms 120 from being affected due to the smaller distance between them when connecting the pressing block device to the frame 400.

[0058] In some embodiments, the two crimping arms 220 have different projected lengths along the extension direction of the locking member 300.

[0059] In this embodiment, when the tilt angles of the two crimping arms 220 are the same, the lengths of the two crimping arms 220 are different. The two crimping arms 220 are a left crimping arm and a right crimping arm. Taking the example that the length of the left crimping arm is greater than the length of the right crimping arm, the following explanation will be given. During installation, the left photovoltaic module is first connected to the left side of the pressing block device, and then the bolt is tightened. At this time, the left crimping arm is inserted into the mating part 452. Since the length of the right crimping arm is less than the length of the left crimping arm, the right crimping arm does not protrude beyond the first base 110. The right photovoltaic module can be easily pushed into the bottom of the first base 110 along the first direction OX. When the photovoltaic module is pressed, causing the frame 400 to deform, the right crimping arm extends beyond the first base 110 and engages with the mating part 452, preventing the frame 400 from falling out of the pressing block.

[0060] One embodiment of this application provides a photovoltaic system with a pressing device. The photovoltaic system includes a support member 500, a photovoltaic module, and a pressing device. The photovoltaic module has a frame 400. The pressing device simultaneously presses the frames 400 of two adjacent photovoltaic modules onto the support member 500. The frame 400 is provided with a mating part 452. The mating parts 452 of two adjacent frames 400 are respectively used to press with the pressing arm 220. The locking member 300 is used to simultaneously fix the first pressing block 100 and the second pressing block 200 to the support member 500.

[0061] In some embodiments, the mating part 452 is a groove, and the crimping arm 220 is used to extend into the groove to achieve crimping between the mating part 452 and the crimping arm 220.

[0062] In some other embodiments, the mating part 452 is a protrusion, and the crimping arm 220 has a groove. The protrusion is used to extend into the groove to achieve crimping between the mating part 452 and the crimping arm 220.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A briquetting device, characterized in that, The briquetting device includes: The first pressing block is pressed onto the frame of two adjacent photovoltaic modules at both ends along the first direction; A second pressing block is disposed on the first pressing block. The second pressing block has pressing arms on both sides along the first direction. The pressing arms are used to pass through the first pressing block to engage with the corresponding frame.

2. The briquetting device according to claim 1, characterized in that, The first pressing block includes a first base and snap-fit ​​arms respectively disposed on both sides of the first base along a first direction. The snap-fit ​​arms on both sides of the first base are respectively used to snap-fit ​​with the frames of two adjacent photovoltaic modules. The two ends of the first base along the first direction are respectively pressed onto the corresponding frames.

3. The briquetting device according to claim 2, characterized in that, The crimping arm passes through the first base and is used to engage with the mating part on the frame.

4. The briquetting device according to claim 3, characterized in that, The first base includes a through section and a connecting section arranged sequentially along a second direction. The snap-fit ​​arm is connected to the connecting section, and the crimping arm passes through the through section and snaps into the corresponding frame.

5. The briquetting device according to claim 2, characterized in that, The snap-fit ​​arm is capable of elastic deformation.

6. The briquetting device according to claim 2, characterized in that, The snap-fit ​​arm includes a straight section and a bent section connected in sequence and arranged at an angle. The bent section is located at the end of the straight section away from the first base. The bent section extends from the straight section toward the side closer to the other snap-fit ​​arm. A protruding hook is provided on the side wall of the bent section away from the first base. The hook is used to hook with the snap-fit ​​part on the frame.

7. The briquetting device according to claim 1, characterized in that, The pressing device includes a locking member, which is sequentially inserted through the second pressing block, the first pressing block, and the support member to lock the three together.

8. The briquetting device according to claim 7, characterized in that, The second pressing block includes a second base, and the pressing arms are respectively provided on both sides of the second base along the first direction. The locking member locks the second base, the first base and the support member. The pressing device further includes an elastic element, which is sleeved outside the locking element and is disposed between the first base and the second base.

9. The briquetting device according to claim 1, characterized in that, Along the direction from the second base to the first base, the two crimping arms extend toward each other on opposite sides.

10. The briquetting device according to claim 1, characterized in that, The two crimping arms have different projected lengths along the extension direction of the locking member.

11. A photovoltaic system, characterized in that, The photovoltaic system includes a support, a photovoltaic module, and a pressing device as described in any one of claims 1-10. The photovoltaic module has a frame, and the pressing device simultaneously presses the frames of two adjacent photovoltaic modules onto the support. The frame is provided with a mating part, and the mating parts of the two adjacent frames are respectively used to engage with the pressing arm.

12. The photovoltaic system according to claim 11, characterized in that, The mating part is a groove, and the crimping arm is used to extend into the groove; Alternatively, the mating part may be a protrusion, and the crimping arm may have a groove, with the protrusion extending into the groove.

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