Solar photovoltaic panel frame

Abstract

The invention discloses a solar photovoltaic panel frame, and belongs to the technical field of photovoltaic panels, the solar photovoltaic panel frame comprises a frame body, the frame body is internally provided with an inner cavity, the four corners of the lower side of the frame body are provided with first supporting legs, the lower ends of the first supporting legs are hinged to supporting pieces, and the lower ends of the supporting pieces are fixedly provided with fixing plates; a plurality of sets of fixing holes are formed in the upper end face of the fixing plate, a first inserting groove is formed in the upper end of the first supporting leg, a folding mechanism is arranged in the inner cavity and comprises adjusting fixing pieces arranged at the four corners in the inner cavity, the adjusting fixing pieces comprise fixing pieces fixedly installed on the inner walls of the two sides of the inner cavity, and a fixing pipe is fixedly installed between the two sets of fixing pieces. According to the scheme, the folding mechanism is arranged, the supporting component and the frame are combined, when installation is needed, the supporting component can be pulled out for free installation, the deflection angle of the supporting component can be adjusted according to actual requirements, and the practicability of the equipment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic panels, and more specifically to a solar photovoltaic panel frame. Background Art

[0002] Solar panels are devices that absorb sunlight and convert solar radiation energy directly or indirectly into electrical energy through photoelectric effect or photochemical effect. The main material of most solar panels is "silicon", but due to the high production cost, its widespread use still has certain limitations.

[0003] A Chinese patent with publication number CN111934603B discloses a solar photovoltaic panel frame with high safety for use in high places. By adjusting the adjusting bolts at two hinges, the angle between the mounting base and the storage rod and the angle between the frame and the telescopic rod can be conveniently adjusted, so that the angle of the entire frame can be conveniently adjusted. The buffer spring between the telescopic rod and the storage rod and the adjusting spring arranged between the slider and the adjustment chamber can play a certain buffering role, which can buffer the pressure caused by factors such as birds landing on the frame or wind, realize multi-directional pressure dispersion, prevent the frame from deformation or breakage, and have high safety.

[0004] The solar photovoltaic panel frame with high safety used in high places prevents deformation or breakage of the frame and has high safety, but it is fixed with bolts like the traditional frame installation method. The common solar photovoltaic panels are usually equipped with a single metal frame, which is directly fixed to the mounting bracket by bolts and other connectors during installation. Although this design provides basic structural support, it also has some shortcomings. During the installation process, multiple sets of connectors need to be used to ensure that the frame is firmly fixed on the bracket, which increases the complexity and time cost of installation. In addition, when disassembly or maintenance is required, the process is also cumbersome and inconvenient because each connection point needs to be processed one by one. This installation method is not only inefficient, but also poses challenges in long-term maintenance, especially when individual components need to be quickly replaced or repaired. It is particularly inconvenient. Summary of the invention

[0005] In view of the problems existing in the prior art, an object of the present invention is to provide a solar photovoltaic panel frame that can be easily installed.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A solar photovoltaic panel frame comprises a frame body, an inner cavity is opened inside the frame body, support legs are arranged at the four corners of the lower side of the frame body, the lower end of the support leg is hinged with a support member, the lower end of the support member is fixedly installed with a fixing plate, the upper end surface of the fixing plate is provided with a plurality of groups of fixing holes, the upper end of the support leg is provided with a slot one, a folding mechanism is arranged inside the inner cavity, the folding mechanism comprises adjustment fixing members arranged at the four corners of the inner cavity, the adjustment fixing members comprise fixing members fixedly installed on the inner walls of both sides of the inner cavity, a fixing tube is fixedly installed between two groups of the fixing members, the outer surface of the fixing tube is rotatably connected with an outer shell, the outer surface of the outer shell is fixedly installed with support legs two, the lower end surface of the frame is provided with a notch corresponding to the support leg two, the lower end surface of the support leg two is fixedly installed with a handle, the adjustment fixing member also comprises a baffle one and a baffle two arranged inside the shell, the baffle one is fixedly connected to the fixing tube, and the baffle two is fixedly connected to the inner wall of the shell.

[0008] An air bag is fixedly installed between the baffle plate 1 and the baffle plate 2, an air inlet is provided on the outer surface of the baffle plate 2 in communication with the air bag, and an air outlet is provided between the air bag and the fixed pipe.

[0009] One end of the fixed tube is slidably connected to a piston column, one end of the piston column is fixedly installed with a transmission plate, a plug rod is eccentrically installed on the front end surface of the transmission plate, and a plurality of groups of slots are provided on the inner wall of the inner cavity corresponding to the plug rod. A limiting column is slidably connected to the outer edge of the front end surface of the transmission plate, and the limiting column is fixedly connected to the outer shell.

[0010] The plurality of groups of slots 2 are dispersedly arranged in a ring shape around the fixed tube, and the inner wall of the inner cavity is provided with buffer grooves corresponding to the plurality of groups of slots 2. The depths of the plurality of groups of slots 2 increase step by step, and the depths of the buffer grooves also increase step by step.

[0011] The folding mechanism also includes an unlocking and retracting member arranged inside the fixed tube, and the unlocking and retracting member includes an air venting pipe fixedly installed on the right end of the piston column, the air venting pipe is arranged inside the fixed tube, and a transmission shaft is arranged inside the air venting pipe.

[0012] A cavity is provided inside the transmission shaft, a second connecting groove is provided on the outer surface of the transmission shaft, and a first connecting groove is provided on the outer surface of the air release pipe.

[0013] A button is arranged on one side of the frame, one end of the button extends into the inner cavity and is fixedly connected to the transmission shaft, and a spring 1 is fixedly installed between the button and the transmission plate.

[0014] The folding mechanism also includes an auxiliary support group arranged on the upper side of the second supporting leg, the auxiliary support group includes an outer surface of a fixed tube with an extrusion block fixedly installed, the extrusion block is arranged inside the outer shell, and a cavity is opened inside the second supporting leg, and the cavity is communicated with the outer shell.

[0015] A slide plate is slidably connected to the interior of the cavity, a slide bar is fixedly installed on the left end surface of the slide plate, the slide bar extends to the interior of the shell and is tightly attached to the extrusion block, and a second spring is fixedly installed between the slide bar and the inner wall of the cavity.

[0016] A transmission rod is fixedly installed on the right end face of the skateboard, a limiting cavity is provided inside the supporting leg 2, a memory alloy is slidably connected inside the limiting cavity, one end of the memory alloy extends to the inside of the inner cavity and is fixedly connected to the inside of the inner cavity, and the other end of the memory alloy extends to the inside of the cavity and is fixedly connected to the transmission rod.

[0017] Compared with the prior art, the present invention has the following beneficial effects: (1) This solution combines the support component and the frame by setting a folding mechanism. When installation is required, the support component can be pulled out and installed freely, and the deflection angle of the support component can be adjusted according to actual needs, thereby increasing the practicality of the equipment; (2) This solution sets up an auxiliary support group to enhance the support strength of the photovoltaic panel frame, effectively disperse the load and improve the stability of the overall structure. This method not only avoids the deformation of the frame due to uneven load, but also extends the service life of the photovoltaic panel. By optimizing the support design, the maintenance frequency and cost are reduced. At the same time, the installation and disassembly process is simplified and the construction efficiency is improved. This can not only ensure the stable operation of the photovoltaic system, but also reduce the cost of long-term maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 The enlarged schematic diagram at A in the middle; Figure 4 For the present invention Figure 2 The enlarged schematic diagram of point B in the middle; Figure 5 is a cross-sectional view of the frame of the present invention; Figure 6 For the present invention Figure 5 The enlarged schematic diagram at C in the middle; Figure 7 For the present invention Figure 5 The enlarged schematic diagram at D in the middle; Figure 8 is a cross-sectional view of the inner cavity of the present invention; Fig. 9 For the present invention Figure 8 Enlarged schematic diagram at point E in the middle.

[0019] Description of the numbers in the figure: 1. Frame; 2. Inner cavity; 3. Support leg 1; 4. Support member; 5. Fixing plate; 6. Fixing hole; 7. Slot 1; 8. Fixing member; 9. Fixing tube; 10. Shell; 11. Support leg 2; 12. Notch; 13. Handle; 14. Baffle 1; 15. Baffle 2; 16. Airbag; 17. Air inlet; 18. Air outlet; 19. Piston column; 20. Transmission plate; 21. Limit column; 22. Insert rod; 23. Slot 2; 24. Buffer groove; 25. Transmission shaft; 26. Cavity; 27. Connecting groove 1; 28. Connecting groove 2; 29. ​​Button; 30. Spring 1; 31. Extrusion block; 32. Slide plate; 33. Slide rod; 34. Transmission rod; 35. Spring 2; 36. Cavity; 37. Memory alloy; 38. Limiting cavity; 39. Vent pipe. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0021] See also Figures 1 to 9 A solar photovoltaic panel frame includes a frame body 1, an inner cavity 2 is provided inside the frame body 1, support legs 3 are provided at the four corners of the lower side of the frame body 1, the lower end of the support leg 3 is hinged with a support member 4, a fixing plate 5 is fixedly installed at the lower end of the support member 4, a plurality of fixing holes 6 are provided on the upper end surface of the fixing plate 5, a slot 7 is provided at the upper end of the support leg 3, a folding mechanism is provided inside the inner cavity 2, the folding mechanism includes adjusting fixing members provided at the four corners of the inner cavity 2, and the adjusting fixing members include inner walls on both sides of the inner cavity 2. A fixedly installed fixing part 8, a fixing tube 9 is fixedly installed between the two groups of fixing parts 8, the outer surface of the fixing tube 9 is rotatably connected to the outer shell 10, the outer surface of the outer shell 10 is fixedly installed with a supporting leg 2 11, a groove 12 is provided on the lower end surface of the frame corresponding to the supporting leg 2 11, and a handle 13 is fixedly installed on the lower end surface of the supporting leg 2 11. The adjustment fixing part also includes a baffle 14 and a baffle 2 15 arranged inside the outer shell 10, the baffle 14 is fixedly connected to the fixing tube 9, and the baffle 2 15 is fixedly connected to the inner wall of the outer shell 10.

[0022] An air bag 16 is fixedly installed between the baffle plate 14 and the baffle plate 2 15 . An air inlet 17 is provided on the outer surface of the baffle plate 2 15 in communication with the air bag 16 . An air outlet 18 is provided between the air bag 16 and the fixed pipe 9 .

[0023] One end of the fixed tube 9 is slidably connected to a piston column 19, and one end of the piston column 19 is fixedly installed with a transmission plate 20. A plug rod 22 is eccentrically installed on the front end surface of the transmission plate 20. The inner wall of the inner cavity 2 is provided with multiple groups of slots 23 corresponding to the plug rod 22. A limiting column 21 is slidably connected to the outer edge of the front end surface of the transmission plate 20, and the limiting column 21 is fixedly connected to the outer shell 10.

[0024] The plurality of slot groups 23 are dispersedly arranged in a ring shape around the fixed tube 9 , and the inner wall of the inner cavity 2 is provided with buffer grooves 24 corresponding to the plurality of slot groups 23 . The depths of the plurality of slot groups 23 increase step by step, and the depths of the buffer grooves 24 also increase step by step.

[0025] When it is necessary to install the frame, first, the support leg 13, the support member 4 and the fixing plate 5 are fixedly installed at the predetermined position. The support member 4 is hinged with the support leg 13, and the angle between the support member 4 and the support leg 13 can be adjusted according to the usage. Then, the handle 13 on the support leg 2 11 is manually held, and the support leg 2 11 is pulled out from the inside of the slot 12. The support leg 2 11 deflects around the fixing tube 9. When the support leg 2 11 deflects, the shell 10 is deflected with it, and the baffle 2 15 fixedly installed on the inner wall of the shell 10 deflects synchronously. An air bag 16 is fixedly installed between the baffle 14 and the baffle 2 15, so that the baffle 2 15 deflects. The rotation squeezes the airbag 16, so that the gas inside the airbag 16 enters the fixed tube 9 by opening the one-way output valve inside the outlet pipe 18, and then pushes out the piston column 19. The limit column 21 fixedly installed on the outer shell 10 is slidably connected with the transmission plate 20, so the transmission plate 20 synchronously carries the insertion rod 22 to deflect. At the same time, the transmission plate 20 at one end of the piston column 19 will drive the insertion rod 22 to insert into the corresponding slot 2 23 under the action of the piston column 19, thereby locking the support leg 2 11. Different deflection angles can be selected according to different terrains to insert into different slots 23, and different slots 23 are stepped and annular.

[0026] The folding mechanism also includes an unlocking and retracting member arranged inside the fixed tube 9 , which includes an air venting pipe 39 fixedly installed at the right end of the piston column 19 . The air venting pipe 39 is arranged inside the fixed tube 9 , and a transmission shaft 25 is arranged inside the air venting pipe 39 .

[0027] A cavity 26 is formed inside the transmission shaft 25 , a second communication groove 28 is formed on the outer surface of the transmission shaft 25 , and a first communication groove 27 is formed on the outer surface of the vent pipe 39 .

[0028] A button 29 is provided on one side of the frame 1 , one end of the button 29 extends into the inner cavity 2 and is fixedly connected to the transmission shaft 25 , and a spring 30 is fixedly installed between the button 29 and the transmission plate 20 .

[0029] When it is necessary to release the fixation, by pressing the button 29, the transmission shaft 25 slides inside the vent pipe 39, so that the connecting groove 1 27 and the connecting groove 2 28 are connected to each other, and then the gas inside the fixing tube 9 enters the interior of the cavity 26 through the connecting groove 1 27 and the connecting groove 2 28 and is discharged from the equipment, so that the piston column 19 retracts into the fixing tube 9, and the limit on the supporting leg 2 11 can be released.

[0030] The folding mechanism also includes an auxiliary support group arranged on the upper side of the supporting leg 11. The auxiliary support group includes an outer surface of a fixed tube 9 with an extrusion block 31 fixedly installed. The extrusion block 31 is arranged inside the outer shell 10. A cavity 36 is opened inside the supporting leg 11, and the cavity 36 is connected to the outer shell 10.

[0031] The cavity 36 is slidably connected to a slide plate 32, and a slide rod 33 is fixedly installed on the left end face of the slide plate 32. The slide rod 33 extends to the inside of the housing 10 and is tightly attached to the extrusion block 31. A spring 35 is fixedly installed between the slide rod 33 and the inner wall of the cavity 36.

[0032] A transmission rod 34 is fixedly installed on the right end face of the slide plate 32, and a limit cavity 38 is provided inside the support leg 11. A memory alloy 37 is slidably connected inside the limit cavity 38. One end of the memory alloy 37 extends to the interior of the inner cavity 2 and is fixedly connected to the interior of the inner cavity 2, and the other end of the memory alloy 37 extends to the interior of the cavity 26 and is fixedly connected to the transmission rod 34.

[0033] The deflection of the support leg 11 synchronously carries the deflection of each group of components inside the cavity 36. The slide bar 33 inside the cavity 36 is in close contact with the extrusion block 31. Therefore, as the deflection angle of the support leg 11 gradually increases, the slide bar 33 slides down gradually under the action of the extrusion block 31. The slide bar 33 descends and then squeezes the memory alloy 37, so that the memory alloy 37 extends out from the inside of the limit cavity 38. The length of the extended memory alloy 37 is different according to the rotation angle, and the memory alloy 37 assists in supporting the support leg 11. After the adjustment is completed, insert the support leg 11 into the slot 7 on the support leg 3 and fix it with the barrel bolt.

[0034] Currently, common solar photovoltaic panels are usually equipped with a single metal frame, which is directly fixed to the mounting bracket by bolts and other connectors during installation. Although this design provides basic structural support, it also has some shortcomings. Multiple sets of connectors are required during the installation process to ensure that the frame is firmly fixed to the bracket, which increases the complexity and time cost of installation. In addition, when disassembly or maintenance is required, the process is also cumbersome and inconvenient because each connection point needs to be handled one by one. This installation method is not only inefficient, but also poses challenges in long-term maintenance, especially when individual components need to be quickly replaced or repaired.

[0035] This solution combines the support component and the frame by setting a folding mechanism. When installation is required, the support component can be pulled out for free installation, and the deflection angle of the support component can be adjusted according to actual needs, thereby increasing the practicality of the device. At the same time, this solution also sets up auxiliary support groups to enhance the support strength of the photovoltaic panel frame, effectively disperse the load and improve the stability of the overall structure. This method not only avoids the deformation of the frame due to uneven load, but also extends the service life of the photovoltaic panel. By optimizing the support design, the maintenance frequency and cost are reduced, and the installation and disassembly process is simplified, which improves the construction efficiency. This can not only ensure the stable operation of the photovoltaic system, but also reduce the cost of long-term maintenance.

[0036] Usage: When the frame needs to be installed, first fix the support leg 13, the support member 4 and the fixing plate 5 at the predetermined position. The support member 4 is hinged with the support leg 13, and the angle between the support member 4 and the support leg 13 can be adjusted according to the usage. Then, manually hold the handle 13 on the support leg 2 11, and pull the support leg 2 11 out from the inside of the slot 12. The support leg 2 11 deflects around the fixing tube 9. When the support leg 2 11 deflects, the shell 10 is also deflected. The baffle 2 15 fixedly installed on the inner wall of the shell 10 deflects synchronously. An air bag 16 is fixedly installed between the baffle 14 and the baffle 2 15, so the baffle 2 1 The deflection will squeeze the airbag 16, so that the gas inside the airbag 16 enters the fixed tube 9 by opening the one-way output valve inside the air outlet pipe 18, and then pushes the piston column 19 out. The limit column 21 fixedly installed on the housing 10 is slidably connected with the transmission plate 20, so the transmission plate 20 synchronously carries the insertion rod 22 to deflect. At the same time, the transmission plate 20 at one end of the piston column 19 will drive the insertion rod 22 to insert into the corresponding slot 2 23 under the action of the piston column 19, thereby locking the support leg 2 11. Different deflection angles can be selected according to different terrains to insert into different slots 23, and different slots 23 are stepped and annular. The deflection of the second support leg 11 synchronously carries the deflection of each group of components inside the cavity 36. The slide bar 33 inside the cavity 36 is in close contact with the extrusion block 31. Therefore, as the deflection angle of the second support leg 11 gradually increases, the slide bar 33 gradually increases the depth of the slide under the action of the extrusion block 31. The slide bar 33 descends and then squeezes the memory alloy 37, so that the memory alloy 37 extends out from the inside of the limit cavity 38. The length of the memory alloy 37 extending out is different according to the rotation angle. The memory alloy 37 assists in supporting the second support leg 11. After the adjustment is completed, the second support leg 11 is inserted into the slot 7 on the first support leg 3 and fixed with the barrel bolt. When it is necessary to release the fixation, by pressing the button 29, the transmission shaft 25 slides inside the vent pipe 39, so that the connecting groove 1 27 and the connecting groove 2 28 are connected to each other, and then the gas inside the fixing tube 9 enters the interior of the cavity 26 through the connecting groove 1 27 and the connecting groove 2 28 and is discharged from the equipment, so that the piston column 19 retracts into the fixing tube 9, and the limit on the supporting leg 2 11 can be released.

[0037] The above are only preferred specific implementations of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and improved concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A solar photovoltaic panel frame, comprising a frame (1), wherein an inner cavity (2) is provided inside the frame (1), and wherein: The frame (1) is provided with support legs (3) at the four corners of the lower side, the support legs (3) are hinged at the lower end with support members (4), a fixing plate (5) is fixedly mounted at the lower end of the support member (4), a plurality of fixing holes (6) are provided on the upper end surface of the fixing plate (5), a slot (7) is provided on the upper end of the support legs (3), a folding mechanism is provided inside the inner cavity (2), the folding mechanism comprises adjustment fixing members arranged at the four corners inside the inner cavity (2), the adjustment fixing members comprise fixing members (8) fixedly mounted on the inner walls of both sides of the inner cavity (2), and two groups of the fixing members (8) are provided. ), a fixing tube (9) is fixedly installed between the outer surface of the fixing tube (9) and the outer surface of the outer shell (10), a second supporting leg (11) is fixedly installed on the outer surface of the outer shell (10), a notch (12) is provided on the lower end surface of the frame corresponding to the second supporting leg (11), a handle (13) is fixedly installed on the lower end surface of the second supporting leg (11), and the adjustment fixing member further includes a baffle plate 1 (14) and a baffle plate 2 (15) arranged inside the outer shell (10), the baffle plate 1 (14) is fixedly connected to the fixing tube (9), and the baffle plate 2 (15) is fixedly connected to the inner wall of the outer shell (10).

2. A solar photovoltaic panel frame according to claim 1, characterized in that: An air bag (16) is fixedly installed between the baffle plate 1 (14) and the baffle plate 2 (15); an outer surface of the baffle plate 2 (15) is connected to the air bag (16) and is provided with an air inlet (17); and an air outlet pipe (18) is connected between the air bag (16) and the fixed pipe (9).

3. A solar photovoltaic panel frame according to claim 2, characterized in that: One end of the fixed tube (9) is slidably connected to a piston column (19), one end of the piston column (19) is fixedly mounted with a transmission plate (20), a front end surface of the transmission plate (20) is eccentrically mounted with an insertion rod (22), the inner wall of the inner cavity (2) is provided with a plurality of groups of slots (23) corresponding to the insertion rod (22), a limiting column (21) is slidably connected to the outer edge of the front end surface of the transmission plate (20), and the limiting column (21) is fixedly connected to the housing (10).

4. A solar photovoltaic panel frame according to claim 3, characterized in that: A plurality of groups of slots two (23) are dispersedly arranged in a ring shape around the fixed tube (9); the inner wall of the inner cavity (2) is provided with buffer grooves (24) corresponding to the plurality of groups of slots two (23); the depths of the plurality of groups of slots two (23) increase step by step, and the depths of the buffer grooves (24) also increase step by step.

5. A solar photovoltaic panel frame according to claim 4, characterized in that: The folding mechanism further comprises an unlocking and retracting member arranged inside the fixed tube (9), the unlocking and retracting member comprising an air venting pipe (39) fixedly mounted on the right end of the piston column (19), the air venting pipe (39) being arranged inside the fixed tube (9), and a transmission shaft (25) being arranged inside the air venting pipe (39).

6. A solar photovoltaic panel frame according to claim 5, characterized in that: The transmission shaft (25) has a cavity (26) formed inside, the transmission shaft (25) has a second communication groove (28) formed on its outer surface, and the exhaust pipe (39) has a first communication groove (27) formed on its outer surface.

7. A solar photovoltaic panel frame according to claim 6, characterized in that: A button (29) is provided on one side of the frame (1), one end of the button (29) extends into the interior of the inner cavity (2) and is fixedly connected to the transmission shaft (25), and a spring 1 (30) is fixedly installed between the button (29) and the transmission plate (20).

8. A solar photovoltaic panel frame according to claim 7, characterized in that: The folding mechanism further comprises an auxiliary support group arranged on the upper side of the second support leg (11), the auxiliary support group comprising an outer surface of a fixed tube (9) on which an extrusion block (31) is fixedly mounted, the extrusion block (31) being arranged inside the outer shell (10), a cavity (36) being provided inside the second support leg (11), the cavity (36) being in communication with the outer shell (10).

9. A solar photovoltaic panel frame according to claim 8, characterized in that: The cavity (36) is slidably connected to a slide plate (32), a slide bar (33) is fixedly mounted on the left end face of the slide plate (32), the slide bar (33) extends into the interior of the housing (10) and is tightly attached to the extrusion block (31), and a second spring (35) is fixedly mounted between the slide bar (33) and the inner wall of the cavity (36).

10. A solar photovoltaic panel frame according to claim 9, characterized in that: A transmission rod (34) is fixedly mounted on the right end surface of the slide plate (32); a limit cavity (38) is provided inside the second support leg (11); a memory alloy (37) is slidably connected inside the limit cavity (38); one end of the memory alloy (37) extends into the interior of the inner cavity (2) and is fixedly connected to the interior of the inner cavity (2); and the other end of the memory alloy (37) extends into the interior of the cavity (26) and is fixedly connected to the transmission rod (34).

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