Extended copper bar wiring terminal and hard connection structure thereof

Abstract

The invention relates to the technical field of electrical switch cabinet accessories, in particular to an extended copper bar wiring terminal and a hard connection structure thereof, the extended copper bar wiring terminal comprises a main shell and an auxiliary shell, the main shell and the auxiliary shell jointly form a shell structure, and a conductive copper bar structure is arranged in the shell structure; the hard connection structure comprises a clamping assembly and a locking assembly, the clamping assembly is arranged in the main shell, the locking assembly is arranged on the main shell and the auxiliary shell and connected with the clamping assembly through a transmission structure, a driving assembly is arranged on the main shell, and the driving assembly is connected with the clamping assembly. The requirement of facilitating wiring of clients is met, the copper bar connection requirement is also met, and when the length of the shell structure is adjusted through the hard connection structure, the matching part and the auxiliary copper bar are loosened and can move relatively; and after the length of the shell structure is adjusted, the matching part envelopes and clamps the auxiliary copper bar to be accommodated in one side of the matching part, and a surface contact conductive form is formed.

Description

Technical Field

[0001] The invention relates to the technical field of electrical switch cabinet accessories, in particular to an extended copper bar wiring terminal and a hard connection structure thereof. Background Art

[0002] Copper busbar terminal blocks are important accessories for electrical connections. Copper busbar terminal blocks, also known as copper terminals or wire noses, are a piece of metal sheet (usually copper) sealed in insulating plastic, with holes at one or both ends for inserting wires, and screws for tightening or loosening. They are mainly used to achieve electrical connections, facilitate the connection and disconnection of wires, and do not require welding or winding. They can make the connection between cables and electrical appliances more secure and safe, and are often used in construction, power equipment, electrical appliance connections and other fields.

[0003] Copper busbar terminals have good electrical conductivity and safety performance, good appearance specifications, and are suitable for interconnecting a large number of wires. According to national wiring specifications, the cable end connection must use the corresponding wiring connection terminal, and multi-strand copper wires larger than four millimeters must be installed with wiring noses before being connected to the terminal.

[0004] Copper busbar terminal blocks are used in new digital power distribution cabinets, which require input and output to be completely hard-connected, i.e., copper busbar connections. Most of the terminal blocks in the current electrical market use soft connections, and the copper busbars of the terminals are not long enough to meet the hard connection requirements. Therefore, a copper busbar terminal block is needed that can extend the feed path in the depth direction to facilitate user wiring and meet the requirements of copper busbar connections. Summary of the invention

[0005] The object of the present invention is to provide an extended copper busbar terminal and a hard connection structure thereof to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: An extended copper bar terminal comprises a main housing and a secondary housing, wherein the main housing and the secondary housing together form a shell structure, a conductive copper bar structure is arranged inside the shell structure, the length of the shell structure is adjustable, and during the adjustment of the length of the shell structure, the length of the conductive copper bar structure is also adaptively adjusted; The conductive copper bar structure includes a main copper bar and a secondary copper bar. The main copper bar is fixedly arranged on the main shell, and the secondary copper bar is fixedly arranged on the secondary shell. A connector is formed at one end of the main copper bar away from the secondary copper bar, and a connection terminal is formed at one end of the secondary copper bar away from the main copper bar.

[0007] As a further solution of the present invention: the side of the main copper bar facing the auxiliary copper bar is a matching portion, the matching portion is in an "n" shape, the side of the auxiliary copper bar away from the terminal is adapted to the matching portion and accommodated in the matching portion, and when the length of the shell structure is adjusted, the matching portion envelopes and clamps one side of the auxiliary copper bar accommodated in the matching portion to form a surface contact conductive form.

[0008] The hard connection structure is applicable to the extended copper bar terminal as described above, and the hard connection structure is used to make the matching part and the auxiliary copper bar loosen and move relative to each other when the length of the shell structure is adjusted; after the length of the shell structure is adjusted, the matching part is used to envelop and clamp one side of the auxiliary copper bar accommodated in the matching part to form a surface contact conductive state; The hard connection structure includes a clamping assembly and a locking assembly, wherein the clamping assembly is arranged inside the main housing and is used to clamp the matching portion of the main copper bar so that the matching portion of the main copper bar is tightly attached to the auxiliary copper bar; The locking assembly is arranged on the main housing and the auxiliary housing, and is connected to the clamping assembly through a transmission structure. The locking assembly is used to form a mutually buckled state between the main housing and the auxiliary housing, thereby preventing the main housing and the auxiliary housing from moving freely. A protective cover is rotatably arranged on the auxiliary housing; The main housing is provided with a driving assembly, which is connected to the clamping assembly. During the operation of the driving assembly, the clamping assembly will loosen the matching portion and the auxiliary copper bar, and the locking assembly will release the buckle between the main housing and the auxiliary housing under the drive of the transmission structure.

[0009] As a further solution of the present invention: the clamping assembly comprises a U-shaped guide rod fixedly arranged inside the main housing and two clamping plates vertically slidably arranged on the U-shaped guide rod; The sides of the two clamping plates that are close to each other are tightly attached to the upper and lower side walls of the matching portion of the main copper bar, so that the side of the auxiliary copper bar accommodated in the matching portion forms a surface contact conductive state.

[0010] As a further solution of the present invention: a rotating rod is vertically rotatably provided on the main housing, and two rings are movably sleeved on the outer wall of the rotating rod; The two collars are symmetrically arranged with respect to the center of the rotating rod, and the two collars and the two clamping plates are fixedly connected by L-shaped rods.

[0011] As a further solution of the present invention: the outer wall of the rotating rod is provided with two spiral grooves, the two spiral grooves are symmetrically arranged with respect to the center of the rotating rod and have opposite spiral directions; Balls are respectively rolled and embedded in the two sleeve rings, and the two balls are also respectively rolled and embedded in the two spiral grooves.

[0012] As a further solution of the present invention: the locking assembly includes two horizontally arranged cross bars above the main housing, the two cross bars are horizontally rotatably mounted with pressure plates, the two ends of the two cross bars are respectively rotatably arranged with four connecting rods, the other ends of the four connecting rods are rotatably connected to the outer side wall of the main housing, and the connecting rods are in an inclined state; A blocking block is fixedly provided at the bottom of the pressure plate, a slot is provided at the top of the main shell, and a plurality of limiting teeth are fixedly provided at the top of the auxiliary shell along its length direction. The blocking block passes through the slot and cooperates with the limiting teeth to prevent the auxiliary shell and the main shell from moving.

[0013] As a further solution of the present invention: the locking assembly further comprises a sleeve and a sliding rod slidably matched with the sleeve, the sleeve and the sliding rod are located on one side of the tilting direction of the connecting rod, one end of the sleeve is rotatably connected to the outer side wall of the main housing, and one end of the sliding rod is rotatably connected to the side wall above the center of the connecting rod; A limit plate is fixedly provided at the other end of the slide rod, a spring is installed inside the sleeve, the spring is sleeved outside the slide rod, and the two ends of the spring are respectively against one side of the limit plate and the inner wall of the sleeve close to one end of the connecting rod.

[0014] As a further solution of the present invention: the transmission structure comprises a rotating shaft horizontally rotatably arranged on the main housing, two ends of the rotating shaft are respectively fixedly connected to the other ends of the two connecting rods away from the auxiliary housing, and a first bevel gear is fixedly arranged on the rotating shaft; A bracket is fixedly arranged inside the main shell, a transmission rod is horizontally rotatably arranged on the bracket, a second bevel gear and a third bevel gear are fixedly arranged at both ends of the transmission rod, the second bevel gear is meshed with the first bevel gear, and a fourth bevel gear is fixedly arranged on the rotating rod and meshed with the third bevel gear.

[0015] As a further solution of the present invention: the driving assembly includes a worm horizontally arranged on the main housing and a worm wheel fixedly arranged on the rotating rod, the worm and the worm wheel are meshed with each other, and a knob is fixedly arranged on one end of the worm.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The main shell and the auxiliary shell together form a shell structure with adjustable length, and during the adjustment of the length of the shell structure, the length of the conductive copper bar structure arranged inside it is also adaptively adjusted; The extended copper busbar terminal block can extend the feed path in the depth direction to facilitate customer wiring and meet the copper busbar connection requirements. At the same time, it has overall plastic shell protection, so that there is no exposed wire in the cabinet and no need for additional wire ducts, making the overall cabinet layout more neat and beautiful. When the length of the shell structure is adjusted through the hard connection structure, the matching part and the auxiliary copper bar are relaxed and can move relative to each other; after the length adjustment of the shell structure is completed, the matching part envelops and clamps the auxiliary copper bar to be accommodated in one side of the matching part to form a surface contact conductive form.

[0017] Specifically, the matching part of the main copper bar can be clamped by using the provided clamping assembly, so that the matching part of the main copper bar is tightly attached to the auxiliary copper bar, thereby forming a conductive form of surface contact, and the main shell and the auxiliary shell are formed in a state of mutual snapping through the provided locking assembly, thereby avoiding random movement between the main shell and the auxiliary shell; when it is necessary to adjust the length of the shell structure, the driving assembly is driven to operate by external force, and the driving assembly will drive the locking assembly to move through the transmission structure, thereby releasing the snap between the main shell and the auxiliary shell, and at the same time, the clamping assembly will also relax the matching part of the main copper bar and the auxiliary copper bar under the action of the driving assembly, so that relative movement can occur, and the length of the shell structure can be adjusted. After the adjustment is completed, the initial state can be restored by using the hard connection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a schematic diagram of the overall structure of an embodiment of an extended copper busbar terminal and its hard connection structure.

[0019] Figure 2 The diagram is a half-section schematic diagram of the overall structure of an embodiment of an extended copper busbar terminal and its hard connection structure.

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0021] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0022] Figure 5 The diagram is a schematic diagram of the splitting of the auxiliary housing from the main housing in one embodiment of the extended copper busbar terminal and its hard connection structure.

[0023] Figure 6 This is a schematic diagram of the disassembly of the main housing and the auxiliary housing in one embodiment of the extended copper busbar terminal and its hard connection structure after being cut open.

[0024] Figure 7 It is a cross-sectional view of the main housing, auxiliary housing, pressure plate and sleeve structure in one embodiment of the extended copper busbar terminal and its hard connection structure.

[0025] Figure 8 for Figure 7 Enlarged view of point C in the middle.

[0026] Fig. 9 for Figure 7 Enlarged view of point D in the middle.

[0027] Fig.10 This is a schematic diagram of the overall structure from another perspective of an embodiment of an extended copper busbar terminal and its hard connection structure.

[0028] Fig.11 It is a cross-sectional view of the main copper bar and auxiliary copper bar structure in an embodiment of an extended copper bar terminal and its hard connection structure.

[0029] In the figure: 1. main housing; 101. slot; 2. auxiliary housing; 201. protective cover; 3. main copper bar; 4. auxiliary copper bar; 5. U-shaped guide rod; 6. clamping plate; 7. rotating rod; 701. spiral groove; 8. collar; 9. L-shaped rod; 10. ball; 11. connecting rod; 12. cross bar; 13. pressure plate; 14. blocking block; 15. limiting tooth; 16. sleeve; 17. sliding rod; 18. limiting plate; 19. spring; 20. rotating shaft; 21. No. 1 bevel gear; 22. bracket; 23. transmission rod; 24. No. 2 bevel gear; 25. No. 3 bevel gear; 26. No. 4 bevel gear; 27. worm; 28. worm wheel; 29. ​​knob. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0032] See also Figures 1 to 11In an embodiment of the present invention, an extended copper bar terminal comprises a main housing 1 and a secondary housing 2, wherein the main housing 1 and the secondary housing 2 together form a shell structure, a conductive copper bar structure is arranged inside the shell structure, and the length of the shell structure is adjustable, and during the length adjustment process of the shell structure, the length of the conductive copper bar structure is also adaptively adjusted; The conductive copper bar structure comprises a main copper bar 3 and a secondary copper bar 4, wherein the main copper bar 3 is fixedly arranged on the main housing 1, and the secondary copper bar 4 is fixedly arranged on the secondary housing 2, a connector is formed at one end of the main copper bar 3 away from the secondary copper bar 4, and a connection terminal is formed at one end of the secondary copper bar 4 away from the main copper bar 3; The side of the main copper bar 3 facing the auxiliary copper bar 4 is a matching portion, and the matching portion is in an "n" shape. The side of the auxiliary copper bar 4 away from the terminal is adapted to the matching portion and accommodated in the matching portion. When the length of the shell structure is adjusted, the matching portion envelops and clamps the side of the auxiliary copper bar 4 accommodated in the matching portion to form a surface contact conductive form.

[0033] In this solution, the main housing 1 and the auxiliary housing 2 together form a shell structure with adjustable length, and during the adjustment of the length of the shell structure, the length of the conductive copper bar structure arranged inside it is also adaptively adjusted; In this application, the extended copper busbar terminal block can not only extend the feed-out path in the depth direction to facilitate customer wiring, but also meet the copper busbar connection requirements. At the same time, it has overall plastic shell protection, so that there are no exposed wires in the cabinet and no external wire trough is required. The overall cabinet layout is more neat and beautiful.

[0034] See also Figures 1 to 11 In the embodiment of the present invention, the hard connection structure is applicable to the extended copper bar terminal as described above, and the hard connection structure is used to make the matching part and the auxiliary copper bar 4 loose when the length of the shell structure is adjusted, so that they can move relative to each other; after the length of the shell structure is adjusted, the matching part is used to envelop and clamp the auxiliary copper bar 4 and accommodate one side of the matching part to form a surface contact conductive form; The hard connection structure includes a clamping assembly and a locking assembly. The clamping assembly is arranged inside the main housing 1 and is used to clamp the matching portion of the main copper bar 3 so that the matching portion of the main copper bar 3 is tightly attached to the auxiliary copper bar 4. The locking assembly is arranged on the main housing 1 and the auxiliary housing 2, and is connected to the clamping assembly through a transmission structure. The locking assembly is used to form a mutually buckled state between the main housing 1 and the auxiliary housing 2, thereby preventing the main housing 1 and the auxiliary housing 2 from moving freely. A protective cover 201 is rotatably arranged on the auxiliary housing 2; The main housing 1 is provided with a driving assembly, and the driving assembly is connected to the clamping assembly. During the operation of the driving assembly, the clamping assembly will loosen the matching portion and the auxiliary copper busbar 4, and the locking assembly will release the buckle between the main housing 1 and the auxiliary housing 2 under the drive of the transmission structure.

[0035] In this solution, the matching part of the main copper bar 3 can be clamped by using the provided clamping assembly, so that the matching part of the main copper bar 3 and the auxiliary copper bar 4 are in close contact, thereby forming a conductive form of surface contact, and the main shell 1 and the auxiliary shell 2 are formed into a mutually snapped state by the provided locking assembly, thereby avoiding the main shell 1 and the auxiliary shell 2 from moving at will; when it is necessary to adjust the length of the shell structure, the driving assembly is driven to operate by external force, and the driving assembly will drive the locking assembly to move through the transmission structure, thereby releasing the snap between the main shell 1 and the auxiliary shell 2, and at the same time, the clamping assembly will also make the matching part of the main copper bar 3 and the auxiliary copper bar 4 loose under the action of the driving assembly, so that relative movement can occur, and the length of the shell structure can be adjusted. After the adjustment is completed, the hard connection structure can be used to restore the initial state; The protective cover 201 is transparent, which makes it easy to observe the wiring status.

[0036] See also Figure 2 , Figure 3 , Fig.11 The clamping assembly includes a U-shaped guide rod 5 fixedly arranged inside the main housing 1 and two clamping plates 6 vertically slidably arranged on the U-shaped guide rod 5; The sides of the two clamping plates 6 that are close to each other are in close contact with the upper and lower side walls of the matching part of the main copper bar 3, so that the side of the auxiliary copper bar 4 accommodated in the matching part forms a surface contact conductive state; A rotating rod 7 is vertically rotatably provided on the main housing 1, and two collars 8 are movably sleeved on the outer wall of the rotating rod 7; The two collars 8 are symmetrically arranged with respect to the center of the rotating rod 7, and the two collars 8 and the two clamping plates 6 are fixedly connected by L-shaped rods 9 respectively; The outer wall of the rotating rod 7 is provided with two spiral grooves 701, and the two spiral grooves 701 are symmetrically arranged with respect to the center of the rotating rod 7 and have opposite spiral directions; The two balls 10 are respectively rollingly engaged inside the two collars 8 , and the two balls 10 are also respectively rollingly engaged in the two spiral grooves 701 .

[0037] In this embodiment, when the length of the housing structure needs to be adjusted, since the outer wall of the rotating rod 7 is provided with two spiral grooves 701, the two spiral grooves 701 are symmetrically arranged with respect to the center of the rotating rod 7 and have opposite spiral directions, the two collars 8 are respectively rolled and embedded with balls 10, and the two balls 10 are also respectively rolled and embedded in the two spiral grooves 701, so when the rotating rod 7 rotates and the two collars 8 cannot rotate, the two collars 8 will move away from each other; Because the two rings 8 are fixedly connected to the two clamping plates 6 vertically slidably arranged on the U-shaped guide rod 5 through the two L-shaped rods 9, the rings 8 can only move vertically but cannot rotate, and in the process of moving away from each other, the two clamping plates 6 will be driven away from each other, so that the matching part of the main copper bar 3 and the auxiliary copper bar 4 are relaxed, and relative movement can occur.

[0038] See also Figure 6 , Figure 7 , Figure 8 , Fig.10 The locking assembly includes two horizontal cross bars 12 arranged above the main housing 1, and a pressure plate 13 is horizontally rotatably mounted on the two cross bars 12. Four connecting rods 11 are rotatably mounted at both ends of the two cross bars 12, and the other ends of the four connecting rods 11 are rotatably connected to the outer side wall of the main housing 1, and the connecting rods 11 are in an inclined state; A blocking block 14 is fixedly provided at the bottom of the pressure plate 13, a slot 101 is provided at the top of the main shell 1, and a plurality of limiting teeth 15 are fixedly provided at the top of the auxiliary shell 2 along its length direction. The blocking block 14 penetrates the slot 101 and cooperates with the limiting teeth 15 to prevent the auxiliary shell 2 and the main shell 1 from moving.

[0039] In this embodiment, the pressure plate 13 is movably arranged above the main housing 1 through two cross bars 12 and four connecting rods 11, and the blocking block 14 fixedly arranged at the bottom of the pressure plate 13 and the multiple limiting teeth 15 fixedly arranged on the top of the auxiliary housing 2 along its length direction cooperate with each other, so that the auxiliary housing 2 and the main housing 1 cannot move, wherein the blocking block 14 and the limiting teeth 15 are both composed of two inclined surfaces at one end close to each other, and are both composed of two straight surfaces at one end away from each other. When the straight surface of the blocking block 14 fits with the straight surface of the limiting teeth 15, a snap-fit ​​state is formed, and the inclined surface is designed to facilitate guidance during cooperation; Because the connecting rod 11 is in an inclined state, when the connecting rod 11 is subjected to an external force in the inclined direction, the vertical downward component force generated by the external force will cause the blocking block 14 and the limiting tooth 15 to be firmly locked.

[0040] See also Figure 6 , Figure 7 , Fig. 9The locking assembly further comprises a sleeve 16 and a slide bar 17 that is slidably matched with the sleeve 16, the sleeve 16 and the slide bar 17 are located on one side of the tilting direction of the connecting rod 11, one end of the sleeve 16 is rotatably connected to the outer side wall of the main housing 1, and one end of the slide bar 17 is rotatably connected to the side wall above the center of the connecting rod 11; A limit plate 18 is fixedly provided at the other end of the slide rod 17, and a spring 19 is installed inside the sleeve 16. The spring 19 is sleeved on the outside of the slide rod 17, and the two ends of the spring 19 are respectively against one side of the limit plate 18 and the inner wall of the sleeve 16 close to one end of the connecting rod 11.

[0041] In this embodiment, due to the presence of the spring 19 and the maintained compressed state, the spring 19 will cooperate with the limit plate 18, the slide rod 17 and the sleeve 16, so that the connecting rod 11 always has the force to rotate in the tilting direction, and the force will act on the blocking block 14 and the limit tooth 15 through the cross bar 12 and the pressure plate 13, so that the blocking block 14 and the limit tooth 15 need to overcome the elastic force of the spring 19 when separating.

[0042] See also Figure 2 , Figure 4 , Figure 7 The transmission structure includes a rotating shaft 20 which is horizontally rotatably arranged on the main housing 1, and the two ends of the rotating shaft 20 are respectively fixedly connected to the other ends of the two connecting rods 11 away from the auxiliary housing 2, and a first bevel gear 21 is fixedly arranged on the rotating shaft 20; A bracket 22 is fixedly provided inside the main shell 1, and a transmission rod 23 is horizontally rotatably provided on the bracket 22. A second bevel gear 24 and a third bevel gear 25 are fixedly provided at both ends of the transmission rod 23, and the second bevel gear 24 is meshed with the first bevel gear 21. A fourth bevel gear 26 is fixedly provided on the rotating rod 7 and is meshed with the third bevel gear 25.

[0043] In this embodiment, since the rotating shaft 20 is horizontally rotatably arranged on the main housing 1, and the two ends of the rotating shaft 20 are respectively fixedly connected to the other ends of the two connecting rods 11 away from the auxiliary housing 2, when the rotating shaft 20 rotates, the rotating shaft 20 will drive the two connecting rods 11 to rotate in the opposite direction away from the tilt. In this process, the connecting rod 11 will drive the blocking block 14 to separate from the limiting tooth 15 through the cross bar 12 and the pressure plate 13, and the spring 19 will be further compressed. Because the second bevel gear 24 fixed on the transmission rod 23 and the first bevel gear 21 fixed on the rotating shaft 20 are meshed with each other, when the transmission rod 23 rotates, the rotating shaft 20 will rotate accordingly; Since the fourth bevel gear 26 fixed on the rotating rod 7 and the third bevel gear 25 fixed on the transmission rod 23 are meshed with each other, the transmission rod 23 will rotate along with the rotating rod 7 during its rotation.

[0044] See also Figure 2 , Figure 3 The driving assembly includes a worm 27 horizontally arranged on the main housing 1 and a worm wheel 28 fixedly arranged on the rotating rod 7. The worm 27 and the worm wheel 28 are meshed with each other, and a knob 29 is fixedly arranged at one end of the worm 27.

[0045] In this embodiment, since the worm wheel 28 fixedly arranged on the rotating rod 7 and the worm 27 horizontally rotatably arranged on the main housing 1 are meshed with each other, when the worm 27 is driven to rotate by the knob 29, the rotating rod 7 will rotate accordingly; Because the worm wheel 28 and the worm 27 have a self-locking function, when the worm 27 is not subjected to external force, the worm wheel 28 will always remain stationary.

[0046] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and range of equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0047] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Extended copper busbar terminal, characterized in that: The invention comprises a main shell (1) and a secondary shell (2), wherein the main shell (1) and the secondary shell (2) together form a shell structure, wherein a conductive copper bar structure is arranged inside the shell structure, wherein the length of the shell structure is adjustable, and during the process of adjusting the length of the shell structure, the length of the conductive copper bar structure is also adaptively adjusted; The conductive copper bar structure comprises a main copper bar (3) and a secondary copper bar (4); the main copper bar (3) is fixedly arranged on the main housing (1); the secondary copper bar (4) is fixedly arranged on the secondary housing (2); a connector is formed at one end of the main copper bar (3) away from the secondary copper bar (4); and a connection terminal is formed at one end of the secondary copper bar (4) away from the main copper bar (3).

2. The extended copper busbar terminal according to claim 1, characterized in that: The side of the main copper busbar (3) facing the auxiliary copper busbar (4) is a matching portion, the matching portion is in an "n" shape, and the side of the auxiliary copper busbar (4) away from the wiring terminal is matched with the matching portion and accommodated in the matching portion. When the length of the shell structure is adjusted, the matching portion envelops and clamps the side of the auxiliary copper busbar (4) accommodated in the matching portion to form a surface contact conductive form.

3. A hard connection structure applicable to the extended copper busbar terminal according to claim 2, wherein the hard connection structure is used to relax the matching portion and the auxiliary copper busbar (4) when adjusting the length of the shell structure, so that they can move relative to each other; after the length of the shell structure is adjusted, the matching portion is used to envelop and clamp the auxiliary copper busbar (4) so ​​that it is accommodated in one side of the matching portion and forms a surface contact conductive state; It is characterized in that The hard connection structure comprises a clamping assembly and a locking assembly, wherein the clamping assembly is arranged inside the main housing (1) and is used to clamp the matching portion of the main copper busbar (3) so that the matching portion of the main copper busbar (3) is tightly attached to the auxiliary copper busbar (4); The locking assembly is arranged on the main housing (1) and the auxiliary housing (2), and is connected to the clamping assembly via a transmission structure. The locking assembly is used to form a mutually locked state between the main housing (1) and the auxiliary housing (2), thereby preventing the main housing (1) and the auxiliary housing (2) from moving freely. A protective cover (201) is rotatably arranged on the auxiliary housing (2); The main housing (1) is provided with a driving assembly, the driving assembly being connected to the clamping assembly. During the operation of the driving assembly, the clamping assembly will loosen the mating portion and the auxiliary copper bar (4), and the locking assembly will release the buckle between the main housing (1) and the auxiliary housing (2) under the drive of the transmission structure.

4. The hard connection structure according to claim 3, characterized in that: The clamping assembly comprises a U-shaped guide rod (5) fixedly arranged inside the main housing (1) and two clamping plates (6) vertically slidably arranged on the U-shaped guide rod (5); The sides of the two clamping plates (6) that are close to each other are in close contact with the upper and lower side walls of the matching portion of the main copper busbar (3), so that the side of the auxiliary copper busbar (4) accommodated in the matching portion forms a surface contact conductive state.

5. The hard connection structure according to claim 4, characterized in that: A rotating rod (7) is vertically rotatably provided on the main housing (1), and two collars (8) are movably sleeved on the outer wall of the rotating rod (7); The two collars (8) are symmetrically arranged up and down relative to the center of the rotating rod (7), and the two collars (8) and the two clamping plates (6) are fixedly connected via L-shaped rods (9) respectively.

6. The hard connection structure according to claim 5, characterized in that: The outer wall of the rotating rod (7) is provided with two spiral grooves (701), the two spiral grooves (701) are symmetrically arranged up and down relative to the center of the rotating rod (7) and have opposite spiral directions; A ball (10) is respectively rollingly engaged inside the two collars (8), and the two balls (10) are also respectively rollingly engaged in the two spiral grooves (701).

7. The hard connection structure according to claim 5, characterized in that: The locking assembly comprises two cross bars (12) horizontally arranged above the main housing (1), a pressure plate (13) being rotatably mounted on the two cross bars (12), four connecting rods (11) being rotatably mounted at both ends of the two cross bars (12), the other ends of the four connecting rods (11) being rotatably connected to the outer side wall of the main housing (1), and the connecting rods (11) being in an inclined state; A blocking block (14) is fixedly provided at the bottom of the pressure plate (13), a slot (101) is provided at the top of the main shell (1), and a plurality of limiting teeth (15) are fixedly provided at the top of the auxiliary shell (2) along its length direction, and the blocking block (14) penetrates the slot (101) and cooperates with the limiting teeth (15) to prevent the auxiliary shell (2) and the main shell (1) from moving.

8. The hard connection structure according to claim 7, characterized in that: The locking assembly further comprises a sleeve (16) and a slide rod (17) slidably matched with the sleeve (16), the sleeve (16) and the slide rod (17) being located on one side of the tilting direction of the connecting rod (11), one end of the sleeve (16) being rotatably connected to the outer side wall of the main housing (1), and one end of the slide rod (17) being rotatably connected to the side wall above the center of the connecting rod (11); A limit plate (18) is fixedly provided at the other end of the slide rod (17), and a spring (19) is installed inside the sleeve (16). The spring (19) is sleeved outside the slide rod (17), and two ends of the spring (19) respectively abut against one side of the limit plate (18) and the inner side wall of the sleeve (16) close to one end of the connecting rod (11).

9. The hard connection structure according to claim 7, characterized in that: The transmission structure comprises a rotating shaft (20) which is horizontally rotatably arranged on the main housing (1), the two ends of the rotating shaft (20) being respectively fixedly connected to the other ends of the two connecting rods (11) which are away from the auxiliary housing (2), and a first bevel gear (21) being fixedly arranged on the rotating shaft (20); A bracket (22) is fixedly arranged inside the main housing (1), a transmission rod (23) is horizontally rotatably arranged on the bracket (22), a second bevel gear (24) and a third bevel gear (25) are fixedly arranged at both ends of the transmission rod (23), the second bevel gear (24) and the first bevel gear (21) are meshed with each other, and a fourth bevel gear (26) is fixedly arranged on the rotating rod (7) and is meshed with the third bevel gear (25).

10. The hard connection structure according to claim 5, characterized in that: The drive assembly comprises a worm (27) horizontally arranged on the main housing (1) and a worm wheel (28) fixedly arranged on the rotating rod (7); the worm (27) and the worm wheel (28) are meshed with each other, and a knob (29) is fixedly arranged on one end of the worm (27).

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