A fixing structure of a plug-in terminal and a photovoltaic connector fixture

Abstract

The present invention relates to the technical field of photovoltaic terminals, and specifically to a fixing structure for plug-in terminals and a photovoltaic connector fixture, which includes a fixed substrate, a fixed end, and a movable end. The movable end includes a triggering mechanism provided on a moving inner tube, a pressing mechanism provided between the movable end housing and the moving inner tube, a pulling-back mechanism arranged staggered with the pressing mechanism, a rotating inner tube arranged in the moving inner tube, a movable terminal inserted in the rotating inner tube, and a heat-sensing mechanism provided on the fixed substrate. Connection mechanisms are sleeved on both the movable terminal and the fixed terminal. Through the setting of the triggering mechanism and the pressing mechanism, the movable terminal and the fixed terminal are connected and fixed, preventing the fixed terminal and the movable terminal from detaching. Through the setting of the heat-sensing mechanism and the pulling-back mechanism, when the heat-sensing mechanism detects that the temperature at the connection between the fixed terminal and the movable terminal rises, the pulling-back mechanism drives the movable terminal to move, separating the fixed terminal and the movable terminal, reducing the risk of fire.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic terminals, and specifically to a fixing structure for plug-in terminals and a photovoltaic connector fixture. Background Technique

[0002] Photovoltaic terminals are joint components used in photovoltaic systems to connect cables and photovoltaic modules, inverters, or other electrical devices. Photovoltaic terminals are mainly used to ensure the safe and efficient transmission of current, and at the same time have protection and durability to cope with harsh conditions in outdoor environments.

[0003] A fixing structure for a connector terminal provided in the publication number CN215771644U has a cable inserted and sleeved in a housing. One end of the cable is crimped with a terminal, and the terminal is located on one side of the housing. A semi-circular terminal fixing structure is fixedly sleeved on the shoulder of the terminal. The other end of the cable is crimped with a connector, and the connector is located on the other side of the housing.

[0004] However, when the above-mentioned fixing structure for a connector terminal is in use, after the terminal is fixed, the two opposite terminals will be connected to each other, making the terminals connect the circuit. However, due to the resistance at the connection of the two terminals, heat is likely to be generated at the connection of the terminals, posing a relatively large fire hazard; and once there is a fire hazard, if the two terminals cannot be separated in time, the heat will continue to accumulate between the two terminals, further increasing the fire hazard. Summary of the Invention

[0005] The purpose of the present invention is to provide a fixing structure for plug-in terminals and a photovoltaic connector fixture to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] On the one hand, a fixing structure for plug-in terminals is provided, including:

[0008] A fixed substrate, on which a number of spaced partitions are provided. An installation plate is provided on the fixed substrate, and installation holes are provided on the installation plate;

[0009] A fixed end, which includes a fixed end housing provided between the partitions, a fixed tube provided in the fixed end housing, and a fixed terminal provided in the fixed tube;

[0010] The movable end, and the movable end includes a movable end housing located between the partitions and oppositely arranged to the fixed housing, a movable inner tube arranged in the movable end housing, a triggering mechanism arranged on the movable inner tube, a pressing mechanism arranged between the movable end housing and the movable inner tube, a pulling-back mechanism arranged in an interleaved manner with the pressing mechanism, a rotating inner tube arranged in the movable inner tube, a movable terminal inserted into the rotating inner tube, and a heat-sensing mechanism arranged on the fixed substrate;

[0011] Connection mechanisms are sleeved on both the movable terminal and the fixed terminal. The fixed terminal is inserted into the fixed tube through the connection mechanism to connect the fixed terminal and the fixed tube. When the movable terminal is inserted into the rotating inner tube through the other connection mechanism and the movable terminal is connected to the rotating inner tube, rotating the movable terminal releases the fixation of the pressing mechanism by the triggering mechanism, enabling the pressing mechanism to push the rotating inner tube to move, so that the movable terminal and the fixed terminal are connected and in contact with the heat-sensing mechanism. When the temperature at the connection between the movable terminal and the fixed terminal exceeds the safe temperature, the heat-sensing mechanism releases the fixation of the pulling-back mechanism, enabling the pulling-back mechanism to pull the rotating inner tube and disconnect the fixed terminal and the movable terminal.

[0012] Preferably, a first chute and a first fixing hole arranged on the bottom wall of the first chute are formed in the fixed tube. A sliding partition is arranged in the movable end housing. The movable inner tube includes a movable tube body arranged in the movable end housing, a movable peripheral edge arranged on the movable tube body, a movable groove formed in the movable tube body and the movable peripheral edge and cooperating with the sliding partition, a pressing guide hole and a pulling-back guide groove formed in the movable peripheral edge, and a connecting ring arranged in the movable tube body.

[0013] Preferably, the triggering mechanism includes a triggering groove formed in the movable peripheral edge, a triggering slider arranged in the triggering groove, a hook plate arranged on the triggering slider, and a triggering plate arranged on the hook plate.

[0014] Preferably, the pressing mechanism includes a pressing housing arranged between the sliding partitions, a pressing guide rod arranged in the pressing housing, a pressing sleeve rod sleeved on the pressing guide rod and passing through the pressing guide hole, an extension spring sleeved on the pressing guide rod, and a pressing block arranged on the pressing sleeve rod.

[0015] Preferably, the rotating inner tube includes a rotating tube body disposed within the moving tube body, a rotating perimeter provided on the rotating tube body, a pressing hole provided on the rotating perimeter, a pulling-back moving groove provided on the rotating perimeter and spaced apart from the pressing hole, a limiting ring provided on the rotating tube body and located between the two connecting rings, a second sliding groove provided within the rotating tube body, and a second fixing hole provided on the bottom wall of the second sliding groove.

[0016] Preferably, the pulling-back mechanism includes a pulling-back housing located between the sliding partitions and arranged alternately with the pressing housing, a pulling-back guiding rod provided within the pulling-back housing, a pulling-back sleeve rod sleeved on the pulling-back guiding rod and sequentially passing through the pulling-back guiding groove and the pulling-back moving groove, a contraction spring sleeved on the pulling-back guiding rod, and a pulling-back block provided on the pulling-back sleeve rod.

[0017] Preferably, the heat-sensitive mechanism includes a support rod provided on the fixed substrate, evaporation liquid provided within the support rod, a piston rod inserted into the support rod, a resisting plate provided on the piston rod, a clamping groove and a relaxation groove formed on the resisting plate.

[0018] Preferably, the connecting mechanism includes a housing provided on the fixed terminal or the movable terminal, a pressing groove provided on the housing, a pressing plate guiding rod inserted into the pressing groove, a pressing plate provided on the pressing plate guiding rod, a fixing spring provided between the pressing plate and the pressing groove, and a fixing rod provided on the pressing plate. When the pressing plate is pressed into the pressing groove, the fixed terminal is inserted into the fixed tube or the movable terminal is inserted into the moving tube body. Releasing the pressing plate causes the fixing spring to insert the fixing rod into the first fixing hole or the second fixing hole, fixing the fixed terminal in the fixed tube and fixing the movable terminal in the moving tube body.

[0019] Preferably, rotate the movable terminal to cause the rotating perimeter to push the trigger plate to move, so that the hook plate disengages from the pressing sleeve rod, and the outward extension spring pushes the pressing sleeve rod to insert into the pressing hole, causing the pressing block to push the fixed terminal and the movable terminal to be connected and fixed. When the temperature at the contact between the fixed terminal and the connecting terminal rises above the safe temperature, the evaporation liquid within the support rod in contact with the contact between the fixed terminal and the connecting terminal evaporates, pushing the piston rod to move, aligning the relaxation groove with the pulling-back block, and the contraction spring drives the pulling-back block to move and move with the rotating perimeter, causing the fixed terminal and the movable terminal to disengage.

[0020] On the other hand, a photovoltaic connector fixture is also provided, including the fixing structure of the plug-in terminal described in any one of the above.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] Through the setting of the connection mechanism, the movable terminal can be quickly fixed in the rotating tube body and the fixed terminal can be fixed in the fixed tube. Through the setting of the triggering mechanism and the pressing mechanism, the movable terminal and the fixed terminal are connected and fixed to prevent the fixed terminal and the movable terminal from detaching. Through the setting of the heat sensing mechanism and the pulling-back mechanism, when the heat sensing mechanism detects that the temperature at the connection between the fixed terminal and the movable terminal rises, the pulling-back mechanism drives the movable terminal to move, quickly separating the fixed terminal and the movable terminal and reducing the risk of fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the present invention;

[0024] Figure 2 is a schematic structural diagram of the movable end of the present invention;

[0025] Figure 3 is a connection relationship diagram of the movable inner tube and the rotating inner tube of the present invention;

[0026] Figure 4 is a connection relationship diagram of the movable inner tube and the rotating inner tube of the present invention from another perspective;

[0027] Figure 5 is a sectional structural schematic diagram of the movable inner tube and the rotating inner tube of the present invention;

[0028] Figure 6 is a schematic structural diagram of the housing of the movable end of the present invention;

[0029] Figure 7 is a schematic structural diagram of the movable inner tube of the present invention;

[0030] Figure 8 is a schematic structural diagram of the rotating inner tube of the present invention;

[0031] Figure 9 is a schematic structural diagram of the triggering mechanism of the present invention;

[0032] Figure 10 is a schematic structural diagram of the pressing mechanism of the present invention;

[0033] Figure 11 is a sectional structural schematic diagram of the pressing mechanism of the present invention;

[0034] Figure 12 is a schematic structural diagram of the heat sensing mechanism of the present invention;

[0035] Figure 13 is a schematic structural diagram of the pulling-back mechanism of the present invention;

[0036] Figure 14 is a sectional structural schematic diagram of the pulling-back mechanism of the present invention;

[0037] Figure 15 Schematic structural view of the fixed end of the present invention;

[0038] Figure 16 Schematic structural view of the connection mechanism of the present invention;

[0039] Figure 17 Schematic sectional view of the connection mechanism of the present invention.

[0040] In the figure: 1, fixed substrate; 2, partition board; 3, mounting plate; 4, mounting hole; 5, fixed end housing; 6, fixed tube; 7, fixed terminal; 8, movable end housing; 9, movable terminal; 10, first chute; 11, first fixing hole; 12, sliding partition board; 13, moving tube body; 14, moving perimeter; 15, moving groove; 16, pressing guide hole; 17, pulling-back guide groove; 18, connecting ring; 19, trigger groove; 20, trigger slider; 21, hook plate; 22, trigger plate; 23, pressing housing; 24, pressing guide rod; 25, pressing sleeve rod; 26, external spring; 27, pressing block; 28, rotating tube body; 29, rotating perimeter; 30, pressing hole; 31, pulling-back moving groove; 32, limiting ring; 33, second chute; 34, second fixing hole; 35, pulling-back housing; 36, pulling-back guide rod; 37, pulling-back sleeve rod; 38, contraction spring; 39, pulling-back block; 40, support rod; 41, fixed rod; 42, piston rod; 43, abutting plate; 44, clamping groove; 45, relaxation groove; 46, housing; 47, pressing groove; 48, pressing plate guide rod; 49, pressing plate; 50, fixing spring. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0042] Please refer to Figures 1 to 17 , the present invention provides a technical solution:

[0043] A fixing structure for a plug-in terminal, comprising:

[0044] A fixed substrate 1, on which a plurality of partition boards 2 are arranged at intervals. The partition boards 2 are fixedly connected to the fixed substrate 1 by means of screws or the like. A mounting plate 3 is arranged on the fixed substrate 1. The mounting plate 3 is fixedly connected to the fixed substrate 1 by means of screws or the like. The mounting plate 3 is L-shaped, and a mounting hole 4 is arranged on the mounting plate 3. A bolt can be inserted into the mounting hole 4 to mount and fix the fixed substrate 1 on the mounting platform.

[0045] The fixed end includes a fixed end housing 5, a fixed tube 6, and a fixed terminal 7. The fixed end housing 5 is arranged between the partition plates 2 and is fixedly connected to the partition plates 2 by means such as gluing. The fixed tube 6 is arranged inside the fixed end housing 5 and is fixedly connected to the fixed end housing 5 by means such as gluing. The fixed terminal 7 is arranged inside the fixed tube 6. A first chute 10 and a first fixing hole 11 provided on the bottom wall of the first chute 10 are formed inside the fixed tube 6.

[0046] The movable end includes a movable end housing 8, a movable inner tube, a triggering mechanism, a pressing mechanism, a pulling-back mechanism, a rotating inner tube, a movable terminal 9, and a heat-sensitive mechanism. The movable end housing 8 is located between the partition plates 2 and is arranged opposite to the fixed housing 46. The movable end housing 8 is fixedly connected to the partition plates 2 by means such as gluing. A sliding partition 12 is arranged inside the movable end housing 8 and is fixedly connected to the inner wall of the movable end housing 8 by means such as setting screws. The movable inner tube includes a movable tube body 13, a movable perimeter 14, a movable groove 15, a pressing guide hole 16, a pulling-back guide groove 17, and a connecting ring 18. The movable tube body 13 is arranged inside the movable end housing 8, and the movable tube body 13 and the movable end housing 8 are movably chain-connected. The movable perimeter 14 is arranged on the movable tube body 13 and is fixedly connected to the movable tube body 13 by means such as gluing. The movable groove 15 is formed on the movable tube body 13 and the movable perimeter 14 and cooperates with the sliding partition 12 so that the movable tube body 13 is sleeved on the sliding partition 12, and the sliding partition 12 and the movable groove 15 are movably connected. The pressing guide hole 16 and the pulling-back guide groove 17 are formed on the movable perimeter 14 and are spaced apart on the movable perimeter 14. The connecting ring 18 is arranged inside the movable tube body 13 and is fixedly connected to the inner wall of the movable tube body 13 by means such as integral molding. There are two connecting rings 18.

[0047] The triggering mechanism includes a triggering groove 19, a triggering slider 20, a hook plate 21, and a triggering plate 22. The triggering groove 19 is formed on the movable perimeter 14 and is arc-shaped. The triggering slider 20 is arranged inside the triggering groove 19, and the triggering slider 20 is movably connected to the triggering groove 19. The hook plate 21 is arranged on the triggering slider 20 and is fixedly connected to the triggering slider 20 by means such as integral molding. The triggering plate 22 is arranged on the hook plate 21 and is fixedly connected to the hook plate 21 by means such as setting screws.

[0048] The pressing mechanism includes a pressing outer shell 23, a pressing guide rod 24, a pressing sleeve rod 25, an extension spring 26, and a pressing block 27. The pressing outer shell 23 is arranged between the sliding partitions 12, and the pressing outer shell 23 is fixedly connected to the sliding partitions 12 by means of gluing or the like. The pressing guide rod 24 is arranged in the empty slot inside the pressing outer shell 23, and the pressing guide rod 24 is fixedly connected to the bottom wall of the empty slot inside the pressing outer shell 23 by means of setting screws or the like. The pressing sleeve rod 25 is sleeved on the pressing guide rod 24 and passes through the pressing guide hole 16. The pressing sleeve rod 25 is movably connected to the pressing guide rod 24 and is movably connected to the side wall of the pressing guide hole 16. The extension spring 26 is sleeved on the pressing guide rod 24. One end of the extension spring 26 is fixedly connected to the pressing sleeve rod 25 by means of setting a clamp or the like, and the other end of the extension spring 26 is fixedly connected to the inner wall of the empty slot inside the pressing outer shell 23 by means of setting a clamp or the like. The pressing block 27 is arranged on the pressing sleeve rod 25, and the pressing block 27 is fixedly connected to the pressing sleeve rod 25 by means of integral molding or the like.

[0049] The rotating inner tube includes a rotating tube body 28, a rotating peripheral edge 29, a pressing hole 30, a pulling-back moving groove 31, a limiting ring 32, a second sliding groove 33, and a second fixing hole 34. The rotating tube body 28 is arranged inside the moving tube body 13, and the rotating tube body 28 is rotatably connected to the moving tube body 13. The rotating peripheral edge 29 is arranged on the rotating tube body 28, and the rotating peripheral edge 29 is fixedly connected to the rotating tube body 28 by means of gluing or the like. The pressing hole 30 is arranged on the rotating peripheral edge 29. The pulling-back moving groove 31 is arranged on the rotating peripheral edge 29 and is spaced from the pressing hole 30. The limiting ring 32 is arranged on the rotating tube body 28 and is located between the two connecting rings 18. The limiting ring 32 is arranged on the rotating tube body 28, and the limiting ring 32 is fixedly connected to the inner wall of the rotating tube body 28 by means of integral molding or the like. The second sliding groove 33 is arranged inside the rotating tube body 28, and the second fixing hole 34 is arranged on the bottom wall of the second sliding groove 33.

[0050] The retraction mechanism includes a retraction outer shell 35, a retraction guide rod 36, a retraction sleeve rod 37, a compression spring 38, and a retraction block 39. The retraction outer shell 35 is located between the sliding partitions 12 and is arranged in an interleaved manner with the pressing outer shell 23. The retraction outer shell 35 is fixedly connected to the sliding partition 12 by means such as gluing. The retraction guide rod 36 is arranged in the empty groove inside the retraction outer shell 35, and the retraction guide rod 36 is fixedly connected to the bottom wall of the empty groove inside the retraction outer shell 35 by means such as setting screws. The retraction sleeve rod 37 is sleeved on the retraction guide rod 36 and sequentially passes through the retraction guide groove 17 and the retraction movement groove 31. The retraction sleeve rod 37 is movably connected to the retraction guide rod 36, the retraction guide groove 17, and the retraction movement groove 31 respectively. The compression spring 38 is sleeved on the retraction guide rod 36. One end of the compression spring 38 is fixedly connected to the retraction sleeve rod 37 by means such as setting a clamp, and the other end of the compression spring 38 is fixedly connected to the inner wall of the empty groove inside the retraction outer shell 35 by means such as setting a clamp. The retraction block 39 is arranged on the retraction sleeve rod 37, and the retraction block 39 is fixedly connected to the retraction sleeve rod 37 by means such as integral molding.

[0051] The heat-sensitive mechanism includes a support rod 40, evaporation liquid, a piston rod 42, a pressing plate 43, a clamping groove 44, and a relaxation groove 45. The support rod 40 is arranged on the fixed substrate 1, and the support rod 40 is fixedly connected to the fixed substrate 1 by means such as gluing. The inside of the support rod 40 is a hollow cavity, and evaporation liquid is arranged in the hollow cavity inside the support rod 40. Different safety temperatures are set by selecting different evaporation liquids. The piston rod 42 is inserted into the support rod 40, and the piston rod 42 is movably connected to the support rod 40. The pressing plate 43 is arranged on the piston rod 42, and the pressing plate 43 is fixedly connected to the piston rod 42 by means such as setting screws. The clamping groove 44 and the relaxation groove 45 are opened on the pressing plate 43. The pressing plate 43 is used to press against the fixed retraction block 39. By opening the clamping groove 44, the pressing plate 43 can move along the retraction sleeve. The area of the relaxation groove 45 is larger than the area of the retraction block 39, and the relaxation groove 45 communicates with the clamping groove 44.

[0052] The connecting mechanism includes a housing 46, a pressing groove 47, a pressing plate 49, a guiding rod 48, a fixing spring 50, and a fixing rod 41. The housing 46 is provided on both the fixed terminal 7 and the movable terminal 9. The pressing groove 47 is provided on the housing 46. The guiding rod 48 of the pressing plate 49 is provided on the pressing plate 49. The guiding rod 48 of the pressing plate 49 is fixedly connected to the pressing plate 49 by means of screws or the like. The guiding rod 48 of the pressing plate 49 is inserted into the bottom wall of the pressing groove 47, so that the pressing plate 49 is movably connected to the pressing groove 47. The fixing spring 50 is provided between the pressing plate 49 and the pressing groove 47. One end of the fixing spring 50 is fixedly connected to the pressing plate 49 by means of a clamp or the like. The other end of the fixing spring 50 is fixedly connected to the bottom wall of the pressing groove 47 by means of a clamp or the like. The fixing rod 41 is provided on the pressing plate 49. The guiding rod 48 of the pressing plate 49 is fixedly connected to the pressing plate 49 by means of screws or the like. When the pressing plate 49 is pressed into the pressing groove 47, the fixed terminal 7 is inserted into the fixing tube 6 body or the movable terminal 9 is inserted into the moving tube body 13. The pressing plate 49 is released, and the fixing spring 50 inserts the fixing rod 41 into the first fixing hole 11 or the second fixing hole 34, fixing the fixed terminal 7 in the fixing tube 6 body and fixing the movable terminal 9 in the moving tube body 13.

[0053] Working principle: When in use, press the pressing plate 49 on the fixed terminal 7 to make the pressing plate 49 retract into the pressing groove 47. Insert the fixed terminal 7 into the fixing tube 6 and make the pressing plate 49 move along the first chute 10. When the fixing rod 41 is inserted into the first fixing hole 11, the fixed terminal 7 is fixed. Then press the pressing plate 49 on the movable terminal 9 to make the pressing plate 49 retract into the pressing groove 47. Insert the movable terminal 9 into the fixing tube 6 and make the pressing plate 49 move along the first chute 10. When the fixing rod 41 is inserted into the first fixing hole 11, the movable terminal 9 is fixed. Then rotate the movable terminal 9 to make the rotating edge 29 push the trigger plate 22 to move, so that the hook plate 21 is disengaged from the pressing sleeve rod 25. The extending spring 26 pushes the pressing sleeve rod 25 to insert into the pressing hole 30, and the pressing block 27 pushes the fixed terminal 7 and the movable terminal 9 to be connected and fixed. When the temperature at the contact between the fixed terminal 7 and the connecting terminal rises above the safety temperature, the evaporation liquid in the support rod 40 in contact with the contact between the fixed terminal 7 and the connecting terminal is evaporated, pushing the piston rod 42 to move, aligning the relaxation groove 45 with the pulling-back block 39. The contraction spring 38 drives the pulling-back block 39 to move and move with the rotating edge 29, so that the fixed terminal 7 and the movable terminal 9 are disengaged.

[0054] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixing structure for a plug-in terminal, characterized in that, Comprising: A fixed substrate, on which a number of spaced partitions are provided, an installation plate is provided on the fixed substrate, and installation holes are provided on the installation plate; A fixed end, the fixed end includes a fixed end housing disposed between the partitions, a fixed tube disposed within the fixed end housing, and a fixed terminal disposed within the fixed tube; A movable end, the movable end includes a movable end housing located between the partitions and disposed opposite to the fixed housing, a movable inner tube disposed within the movable end housing, a triggering mechanism disposed on the movable inner tube, a pressing mechanism disposed between the movable end housing and the movable inner tube, a pulling-back mechanism disposed in an interleaved manner with the pressing mechanism, a rotating inner tube disposed within the movable inner tube, a movable terminal inserted into the rotating inner tube, and a heat-sensing mechanism disposed on the fixed substrate; Connection mechanisms are sleeved on both the movable terminal and the fixed terminal. The fixed terminal is inserted into the fixed tube through the connection mechanism to connect the fixed terminal and the fixed tube. When the movable terminal is inserted into the rotating inner tube through the other connection mechanism and the movable terminal is connected to the rotating inner tube, rotating the movable terminal releases the fixation of the pressing mechanism by the triggering mechanism, causing the pressing mechanism to push the rotating inner tube to move, so that the movable terminal and the fixed terminal are connected and contact the heat-sensing mechanism. When the temperature at the connection between the movable terminal and the fixed terminal exceeds the safe temperature, the heat-sensing mechanism releases the fixation of the pulling-back mechanism, causing the pulling-back mechanism to pull the rotating inner tube, so that the fixed terminal and the movable terminal are separated.

2. The fixed structure of a plug-in terminal according to claim 1, characterized in that: A first chute and a first fixing hole provided on the bottom wall of the first chute are formed in the fixed tube. A sliding partition is provided within the movable end housing. The movable inner tube includes a movable tube body disposed within the movable end housing, a movable peripheral edge disposed on the movable tube body, a movable groove formed in the movable tube body and the movable peripheral edge and cooperating with the sliding partition, a pressing guide hole and a pulling-back guide groove formed in the movable peripheral edge, and a connecting ring disposed within the movable tube body.

3. The fixed structure of a plug-in terminal according to claim 2, characterized in that: The triggering mechanism includes a triggering groove formed in the movable peripheral edge, a triggering slider disposed within the triggering groove, a hook plate disposed on the triggering slider, and a triggering plate disposed on the hook plate.

4. The fixed structure of a plug-in terminal according to claim 3, characterized in that: The pressing mechanism includes a pressing housing disposed between the sliding partitions, a pressing guide rod disposed within the pressing housing, a pressing sleeve rod sleeved on the pressing guide rod and passing through the pressing guide hole, an extension spring sleeved on the pressing guide rod, and a pressing block disposed on the pressing sleeve rod.

5. The fixed structure of a plug-in terminal according to claim 4, characterized in that: The rotating inner tube includes a rotating tube body disposed within the movable tube body, a rotating peripheral edge disposed on the rotating tube body, a pressing hole formed in the rotating peripheral edge, a pulling-back moving groove formed in the rotating peripheral edge and spaced from the pressing hole, a limiting ring disposed on the rotating tube body and located between the two connecting rings, a second chute formed in the rotating tube body, and a second fixing hole provided on the bottom wall of the second chute.

6. The fixed structure of a plug-in terminal according to claim 5, characterized in that: The pulling-back mechanism includes a pulling-back housing located between the sliding partitions and arranged staggeredly with the pressing housing, a pulling-back guiding rod arranged in the pulling-back housing, a pulling-back sleeve rod sleeved on the pulling-back guiding rod and sequentially passing through the pulling-back guiding groove and the pulling-back moving groove, a contraction spring sleeved on the pulling-back guiding rod, and a pulling-back block arranged on the pulling-back sleeve rod.

7. The fixed structure of a plug-in terminal according to claim 6, characterized in that: The heat-sensitive mechanism includes a support rod arranged on the fixed substrate, evaporation liquid arranged in the support rod, a piston rod inserted in the support rod, a pressing plate arranged on the piston rod, a clamping groove and a relaxation groove formed in the pressing plate.

8. The fixed structure of a plug-in terminal according to claim 7, characterized in that: The connecting mechanism includes a housing arranged on the fixed terminal or the movable terminal, a pressing groove arranged on the housing, a pressing plate guiding rod inserted in the pressing groove, a pressing plate arranged on the pressing plate guiding rod, a fixing spring arranged between the pressing plate and the pressing groove, and a fixing rod arranged on the pressing plate. When the pressing plate is pressed into the pressing groove, the fixed terminal is inserted into the fixed tube or the movable terminal is inserted into the movable tube body. When the pressing plate is released, the fixing spring inserts the fixing rod into the first fixing hole or the second fixing hole, fixing the fixed terminal in the fixed tube and fixing the movable terminal in the movable tube body.

9. The fixed structure of a plug-in terminal according to claim 8, characterized in that: Rotate the movable terminal to make the rotating perimeter push the trigger plate to move, so that the hook plate disengages from the pressing sleeve rod, and the outstretched spring pushes the pressing sleeve rod to insert into the pressing hole, and the pressing block pushes the fixed terminal and the movable terminal to be connected and fixed. When the temperature at the contact between the fixed terminal and the connecting terminal rises above the safe temperature, the evaporation liquid in the support rod in contact with the contact between the fixed terminal and the connecting terminal evaporates, pushing the piston rod to move, aligning the relaxation groove with the pulling-back block, and the contraction spring drives the pulling-back block to move and move with the rotating perimeter, so that the fixed terminal and the movable terminal are disengaged.

10. A photovoltaic connector fixture, comprising the fixing structure of the plug-in terminal according to any one of claims 1-9 above.

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