A busbar connector

Abstract

The present invention discloses a bus bar connector, which includes an upper pressing plate, a lower pressing plate, a set of elastic pieces and a locking mechanism. The set of elastic pieces is arranged oppositely up and down between the upper pressing plate and the lower pressing plate, and a locking space is formed between the innermost set of elastic pieces. The locking mechanism is arranged in the locking space, and the gap between the oppositely arranged set of elastic pieces is adjusted through the locking mechanism, so as to press and separate the copper bus bar to be connected. The bus bar connector adopts a multi-finger type set of elastic pieces design, with balanced pressure, ensuring good and reliable contact for each contact surface. Moreover, the set of elastic pieces adopts a multi-layer structure design, and elastic copper sheets with different numbers of layers can be configured according to the capacity to obtain any current capacity; the lateral sliding and vertical locking structure is an ultra-thin structure, which utilizes the ineffective space in the middle of the spring group to realize the locking structure, effectively saving the precious vertical space; the lateral sliding uses screws for locking, which facilitates installation.

Description

Technical Field

[0001] The present invention relates to the technology of bus bar or bus connection, and particularly to a bus bar connector. Background Art

[0002] The end bus bar is generally a power distribution device for the power consumption terminal composed of a copper conductor and an aluminum alloy shell. Through devices such as the matching plug-in box, the function of supplying power to specific equipment is realized. Especially for the power supply of network cabinets in data centers, the end bus bar power supply method has increasingly replaced the traditional power supply method of the header cabinet cable. This power supply method can provide a large power output capacity, has strong expansion ability, and saves valuable space resources after replacing the header cabinet, enabling users to deploy more network cabinets. It has become a trend to adopt the end bus bar power supply method in the construction of data centers.

[0003] The characteristics of the end bus bar are series supporting, commercial production, large capacity, short design and construction cycle, convenient installation and disassembly, non-combustible, safe and reliable, and long service life. The end bus bar products are applicable to the three-phase four-wire and three-phase five-wire power supply projects of network cabinets in data centers with an alternating current of 50 Hz, a rated voltage of 380 V, and a rated current usually of 250 A - 400 A. With the development of information technology, the application of the end bus bar is becoming more and more extensive, and at the same time, more requirements are put forward for this product.

[0004] First of all, the installation density of current servers and network devices is getting higher and higher, and the power demand is getting larger and larger. Therefore, the requirement for the rated current of the end bus bar is also higher, such as 1000 A; while the rated current of the current end bus bar products is usually 400 A, and some manufacturers can reach 630 A after improvement. The reason is that the main design difficulty of the end bus bar with large current lies in: 1. The electrodynamic force at large current usually causes the magnetic oscillation frequency to form a superimposed state, resulting in excessive noise; 2. Large current leads to a large amount of heat generation. The end bus bar is usually installed in the data machine room, and the requirement for temperature rise is higher than that of the usual compact bus bar. Therefore, good heat dissipation is required.

[0005] Secondly, the installation of the end busbar occupies the space at the top of the network cabinet. Usually, a mounting clearance of 800 mm or higher is required. At the same time, the conventional design of the dual busbars makes the installation space even narrower. Especially for some data centers with relatively low building storeys, the conventional end busbars may not be installed at all, which greatly limits the popularization of end busbars. To effectively reduce the volume, especially the height installation dimension, setting the output device on the side of the busbar is an effective solution. In this way, the space occupied by the output device will be in the horizontal direction, thus saving the precious vertical net height space. Therefore, the busbar is designed to be horizontally placed and horizontally lead out. Although the thickness of the busbar is only 5 mm, the length of the busbar is limited, and the primary busbars need to be connected section by section for use. The connection points of the busbar copper bars adopt different structures by different manufacturers, but usually occupy a large space, thus increasing the local dimension (mainly the thickness) of the busbar. As a result, the previous efforts to reduce the installation height of the busbar will be in vain due to the increase in the size at the connection points.

[0006] Therefore, there is an urgent need for a busbar connector with an ultra-thin installation height, easy to install, and supporting large currents, which is also one of the key technologies to reduce the installation height of the busbar at present. Summary of the Invention

[0007] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a busbar connector that can solve the above problems.

[0008] The purpose of the present invention is achieved by the following technical solutions:

[0009] A busbar connector, the busbar connector includes an upper pressure plate, a lower pressure plate, a set of elastic pieces, and a locking mechanism. The upper pressure plate and the lower pressure plate are arranged parallel and opposite to each other. The set of elastic pieces is arranged vertically between the upper pressure plate and the lower pressure plate, and a locking space is formed between the innermost set of elastic pieces. The locking mechanism is arranged in the locking space to connect the upper pressure plate, the lower pressure plate, and the set of elastic pieces, and adjust the gap between the oppositely arranged set of elastic pieces through the locking mechanism, so as to clamp and separate the copper busbar to be connected.

[0010] Preferably, the set of elastic pieces adopts a multi-group and multi-finger elastic piece structure. Each group of the multi-group set of elastic pieces includes two elastic pieces arranged opposite to each other. Each elastic piece includes an integrally formed middle plate, an inclined plate, and a contact pressure plate. The inclined plate and the contact pressure plate are sequentially arranged on both sides of the middle plate, so that the elastic piece as a whole is in an arch structure. The multi-group set of elastic pieces gradually becomes larger from the inside to the outside, and are stacked and arranged at the middle plate, and a locking through hole is opened on each middle plate.

[0011] Preferably, the multi-group symmetrical spring pieces are deployed in a stacked manner, and different stacking numbers can meet the requirements of different current levels.

[0012] Preferably, gaps are equally spaced on the inclined plate and the contact pressure plate of each elastic piece, so that the elastic piece has a multi-finger structure.

[0013] Preferably, three groups of elastic pieces are provided; the inclined plates and contact pressure plates of some elastic pieces are arranged transversely beyond or protruding from the two side edges of the upper pressure plate and the lower pressure plate, so that the elastic piece group presents a transversely extended or extended structure relative to the entire busbar connector.

[0014] Preferably, the upper pressure plate includes an integrally formed upper flat plate, two upper end plates, an upper buckle plate and two upper side plates. The two upper end plates are arranged at both ends of the upper flat plate. The upper buckle plate extends vertically downward from the outer edge of one of the upper end plates perpendicular to the upper flat plate. The two upper side plates are inclined and arranged at both side ends of the upper flat plate. Two rows of upper pressure holes adapted to the locking pressure through holes are equally spaced and parallelly opened on the upper flat plate, and an upper adjustment hole is opened in the middle of the upper buckle plate.

[0015] Preferably, the lower pressure plate includes an integrally formed lower flat plate, two lower end plates, a lower buckle plate and two lower side plates. The two lower end plates are arranged at both ends of the lower flat plate. The lower buckle plate extends vertically upward from the outer edge of one of the lower end plates perpendicular to the lower flat plate. The two lower side plates are inclined and arranged on both sides of the lower flat plate. Two rows of lower pressure holes adapted to the locking pressure through holes are equally spaced and parallelly opened on the lower flat plate, and a lower adjustment hole is opened in the middle of the lower buckle plate.

[0016] Preferably, the locking mechanism is one of a mechanical adjustment mechanism, a hydraulic adjustment mechanism, and an electromagnetic adjustment mechanism.

[0017] Preferably, the locking mechanism is a lateral sliding vertical locking mechanical adjustment mechanism. The lateral sliding vertical locking mechanical adjustment mechanism includes a pressure groove body, a pull rod, a plurality of lower buckle plates and an adjustment screw. The plurality of lower buckle plates are inserted on the pressure groove body, and the pull rod is slidably arranged in the pressure groove body. The position of the pull rod in the pressure groove body is adjusted by the adjustment screw, so as to adjust the relative distance between the pressure groove body and the lower buckle plate, thereby realizing the pressing and separation of the elastic piece group on the copper busbar to be connected.

[0018] Preferably, the pressure groove body includes a Π-shaped groove body integrally formed by a groove bottom plate and two side plates extending perpendicularly from the side edges of the groove bottom plate. A plurality of upper pull claws are formed by upward protrusions at intervals on the upper edges of the two side plates of the Π-shaped groove body. Groove bottom holes for the lower buckle plates to pass through are opened at intervals on the groove bottom plate, and a groove cavity for the pull rod to slide is formed by surrounding the groove bottom plate and the side plates.

[0019] Preferably, the pull rod includes a pull rod body, a push-pull convex body formed by upward protrusions spaced from the upper surface of the pull rod body. The stop surface at one end of each push-pull convex body is perpendicular to the upper surface of the pull rod body, and the push-pull inclined surface at the other end is inclined. A push-pull head is formed by vertically upward protrusion at one end of the pull rod body, and an adjustment screw hole adapted to the adjustment screw is provided on the outer end surface of the push-pull head.

[0020] Preferably, each of the lower pull buttons includes a pull button body formed by a pull button top plate and pull button side plates extending perpendicularly from both ends of the pull button top plate. A pull button cavity is formed by surrounding the pull button top plate and the pull button side plates. A pull button claw extends downward along the lower end of the pull button side plate, and a pull button baffle extends upward at one side end of the pull button top plate.

[0021] Preferably, the pull button claw of each lower pull button is separated by a pull button gap into a wide claw and a narrow claw.

[0022] Preferably, when the upper pressing plate and the lower pressing plate are assembled with the locking mechanism, the upper pull claw bends inward relatively after passing through the locking through hole of the elastic sheet group and the upper pressing hole of the upper pressing plate, and the pull button claw bends inward relatively after passing through the locking through hole of the elastic sheet group and the lower pressing hole of the lower pressing plate, so as to limit the maximum pressing gap of the elastic sheet group.

[0023] Preferably, the locking mechanism further includes a reinforcing buckle plate, and the reinforcing buckle plate is buckled between two adjacent push-pull convex bodies on the pull rod.

[0024] Preferably, the adjustment screw is an internal hexagonal screw.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: The multi-finger type elastic sheet group design of the present application has balanced pressure, ensuring good and reliable contact of each contact surface; and the elastic sheet group adopts a multi-layer structure design, and different numbers of elastic copper sheets can be configured according to the capacity to obtain any current capacity. There are up to 40*6 independent elastic sheet structures, ensuring that each elastic sheet has an independent pressing force and more reliable contact, guaranteeing a large-capacity current; The side-sliding vertical locking structure is a ultra-thin structure. This mechanism utilizes the invalid space in the middle of the spring group to realize the locking structure, effectively saving the precious vertical space; The side-sliding uses screws for locking, which is convenient for installation, does not interfere with the operation of the busbar connector, and each system is safe and reliable. Moreover, the side operation is more convenient, and installation, maintenance, and replacement can be carried out conveniently. The design of the pressing-in-place indication: Ensure that the connector is pressed in place with a clear mark, and cooperate with the anti-fooling performance of the housing to ensure correct installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of an embodiment of a busbar connector of the present invention;

[0027] Figure 2 Schematic diagram of a copper busbar clamped by a busbar connector

[0028] Figure 3 Schematic diagram of a busbar connector from one perspective

[0029] Figure 4 Schematic diagram of a busbar connector from another perspective

[0030] Figure 5 Side view of a busbar connector

[0031] Figure 6 Exploded schematic diagram of a busbar connector

[0032] Figure 7 Schematic diagram of the upper pressure plate of a busbar connector

[0033] Figure 8 Schematic diagram of the lower pressure plate of a busbar connector

[0034] Figure 9 Schematic diagram of three groups of elastic sheet groups in an embodiment of a busbar connector

[0035] Figure 10 Front view schematic diagram of three groups of elastic sheet groups

[0036] Figure 11 Schematic diagram of an elastic sheet

[0037] Figure 12 Schematic diagram of another elastic sheet

[0038] Figure 13 Schematic diagram of an embodiment of a locking mechanism

[0039] Figure 14 Schematic diagram of the pressure groove body of a busbar connector

[0040] Figure 15 Schematic diagram of the pull rod of a busbar connector

[0041] Figure 16 Schematic diagram of the lower pull buckle of a busbar connector

[0042] In the figure: 1. Upper pressure plate; 11. Upper flat plate; 12. Upper end plate; 13. Upper buckle plate; 14. Upper side plate; 15. Upper pressure hole; 16. Upper adjustment hole;

[0043] 2. Lower pressure plate; 21. Lower flat plate; 22. Lower end plate; 23. Lower buckle plate; 24. Lower side plate; 25. Lower pressure hole; 26. Lower adjustment hole;

[0044] 3. Elastic sheet group; 31. Intermediate plate; 32. Inclined plate; 33. Contact pressure plate; 34. Locking pressure through hole;

[0045] 4. Locking mechanism;

[0046] 41. Grooved body; 411. Π-shaped groove body; 412. Upper pulling claw; 413. Bottom hole of the groove; 414. Groove body cavity;

[0047] 42. Pull rod; 421. Pull rod body; 422. Pushing and pulling convex body; 423. Pushing and pulling inclined surface; 424. Stopping surface; 425. Pushing and pulling head; 426. Adjusting screw hole;

[0048] 43. Lower pull buckle; 431. Pull buckle body; 432. Pull buckle claw; 433. Pull buckle baffle; 434. Pull buckle gap; 435. Pull buckle cavity;

[0049] 44. Adjusting screw;

[0050] 45. Reinforcing buckle plate;

[0051] 100. Copper busbar. Detailed implementation manners

[0052] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. 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.

[0053] See Figures 1 to 16 , a busbar connector, the overall flat and compact busbar connector includes an upper pressing plate 1, a lower pressing plate 2, a spring piece group 3 and a locking mechanism 4. The upper pressing plate 1 and the lower pressing plate 2 are arranged in parallel and opposite, and are the outermost structures of the entire connector, serving as an outer pressing plate and a protective plate for the reinforcing plate; the spring piece group 3 is arranged oppositely up and down between the upper pressing plate 1 and the lower pressing plate 2, and a locking space is formed between the innermost spring piece groups 3 (see the locking space shown in Figure 10 ); the locking mechanism 4 is arranged in the locking space, connects the upper pressing plate 1, the lower pressing plate 2 and the spring piece group 3 through the locking mechanism 4, and adjusts the gap between the oppositely arranged spring piece groups 3 through the locking mechanism 4, so as to press and separate the copper busbar 100 to be connected.

[0054] The flat and compact structure of the entire busbar connector makes the entire busbar connector more compact in the vertical direction, that is, the locking direction of the busbar, and the transverse touch pressure structure of the spring piece group 3 enables the busbar connector to have a larger operating space in the horizontal direction, and the pressing area of the busbar is also larger, so that the busbar is pressed more firmly.

[0055] Spring piece group

[0056] The elastic piece group 3 has a multi-layer or multi-group structure. The multi-group elastic piece groups 3 adopt a multi-finger elastic piece structure. Each group of the multi-group elastic piece groups 3 includes two elastic pieces arranged oppositely. Each elastic piece includes an integrally formed middle plate 31, an inclined plate 32, and a contact pressure plate 33. The inclined plate 32 and the contact pressure plate 33 are sequentially arranged on both sides of the middle plate 31, so that the elastic piece as a whole presents an arcuate structure. The multi-group elastic piece groups 3 gradually increase from the inside to the outside, and are stacked and arranged at the middle plate 31, and locking through holes 34 are opened on each middle plate 31.

[0057] Furthermore, gaps are equally spacedly opened on the inclined plate 32 and the contact pressure plate 33 of each elastic piece, so that the elastic piece presents a multi-finger structure. The inclined plate 32 and the contact pressure plate 33 of some elastic pieces extend or protrude beyond the two side edges of the upper pressure plate 1 and the lower pressure plate 2 in the transverse direction, so that the elastic piece group 3 presents a laterally extended or extended structure relative to the entire busbar connector.

[0058] The number of groups of the elastic piece group 3, that is, the number of layers of the elastic piece group, can be increased or decreased according to the actual current capacity requirements. In one embodiment, three groups of the elastic piece groups 3 are provided, with the innermost layer being the smallest, gradually increasing outwards in sequence, and being stacked and arranged.

[0059] Upper pressure plate

[0060] The upper pressure plate 1 includes an integrally formed upper flat plate 11, two upper end plates 12, an upper buckle plate 13, and two upper side plates 14. The two upper end plates 12 are arranged at both ends of the upper flat plate 11. The upper buckle plate 13 extends vertically downward from the outer edge of one of the upper end plates 12 perpendicular to the upper flat plate 11. The two upper side plates 14 are obliquely arranged at both side ends of the upper flat plate 11. Two rows of upper pressure holes 15 adapted to the locking through holes 34 are opened on the upper flat plate 11 in parallel and at equal intervals. An upper adjustment hole 16 is opened in the middle of the upper buckle plate 13.

[0061] Lower pressure plate

[0062] The lower pressure plate 2 includes an integrally formed lower flat plate 21, two lower end plates 22, a lower buckle plate 23, and two lower side plates 24. The two lower end plates 22 are arranged at both ends of the lower flat plate 21. The lower buckle plate 23 extends vertically upward from the outer edge of one of the lower end plates 22 perpendicular to the lower flat plate 21. The two lower side plates 24 are obliquely arranged at both sides of the lower flat plate 21. Two rows of lower pressure holes 25 adapted to the locking through holes 34 are opened on the lower flat plate 21 in parallel and at equal intervals. A lower adjustment hole 26 is opened in the middle of the lower buckle plate 23.

[0063] Among them, the upper buckle plate 13 and the lower buckle plate 23 are on the same end side during assembly, and there is an overlapping gap between the two inside and outside.

[0064] Locking mechanism

[0065] The locking mechanism 4 is one of a mechanical adjustment mechanism, a hydraulic adjustment mechanism, and an electromagnetic adjustment mechanism. Preferably, it is a mechanical adjustment mechanism, eliminating the need for auxiliary hydraulic and electrical mechanisms.

[0066] In one embodiment, referring to Figures 13 to 16 , the locking mechanism 4 is a lateral sliding and vertical locking mechanical adjustment mechanism. The lateral sliding and vertical locking mechanical adjustment mechanism includes a groove body 41, a pull rod 42, a plurality of lower pull buckles 43, and an adjustment screw 44. The plurality of lower pull buckles 43 are inserted into the groove body 41, and the pull rod 42 is slidably disposed in the groove body 41. The position of the pull rod 42 in the groove body 41 is adjusted by the adjustment screw 44, so as to adjust the relative distance between the groove body 41 and the lower pull buckles 43, thereby realizing the pressing and separation of the elastic sheet group 3 on the copper busbar 100 to be connected.

[0067] Among them, the groove body 41 includes a Π-shaped groove body 411 integrally formed by a groove bottom plate and two side plates extending perpendicularly from the side edges of the groove bottom plate. A plurality of upper pull claws 412 are formed by upward protrusions at intervals on the upper edges of the two side plates of the Π-shaped groove body 411. Groove bottom holes 413 for the lower pull buckles 43 to pass through are formed at intervals on the groove bottom plate. A groove cavity 414 for the pull rod 42 to slide is formed by surrounding the groove bottom plate and the side plates.

[0068] Among them, the pull rod 42 includes a pull rod body 421, a push-pull convex body 422 formed by upward protrusions at intervals on the upper surface of the pull rod body 421. A stop surface 424 at one end of each push-pull convex body 422 is perpendicular to the upper surface of the pull rod body 421, and a push-pull inclined surface 423 at the other end is inclined. A push-pull head 425 is formed by upward protrusions perpendicular to one end of the pull rod body 421. An adjustment screw hole 426 adapted to the adjustment screw 44 is formed on the outer end surface of the push-pull head 425.

[0069] Among them, each lower pull buckle 43 includes a pull buckle body 431 composed of a pull buckle top plate and pull buckle side plates extending perpendicularly from both ends of the pull buckle top plate. A pull buckle cavity 435 is formed by surrounding the pull buckle top plate and the pull buckle side plates. A pull buckle claw 432 is formed by extending downward along the lower end edge of the pull buckle side plate. A pull buckle baffle 433 is formed by upward extension at one side end of the pull buckle top plate.

[0070] Furthermore, in one embodiment, the pull buckle claw 432 of each lower pull buckle 43 is divided into a wide buckle claw and a narrow buckle claw by a pull buckle gap 434.

[0071] Furthermore, the locking mechanism 4 further includes a reinforcing buckle plate 45, and the reinforcing buckle plate 45 is buckled between two adjacent push-pull convex bodies 422 on the pull rod 42.

[0072] Among them, the adjusting screw 44 is preferably an internal hexagonal screw.

[0073] In this connector, the elastic piece group 3 is made of a good copper conductor material, and the others can be set as insulating materials.

[0074] Assembly adjustment: When the upper pressure plate 1, the lower pressure plate 2 and the locking mechanism 4 are assembled, the upper pull claw 412 passes through the locking through hole 34 of the elastic piece group 3 and the upper pressure hole 15 of the upper pressure plate 1 and then bends inward relatively. The buckle claw 432 passes through the locking through hole 34 of the elastic piece group 3 and the lower pressure hole 25 of the lower pressure plate 2 and then bends inward relatively, so as to limit the maximum pressing gap of the elastic piece group 3. The upper buckle plates 13 and the lower buckle plates 23 of the upper pressure plate 1 and the lower pressure plate 2 are assembled on the same end side, and the screw head of the adjusting screw 44 is arranged in the gap between the upper buckle plate 13 and the lower buckle plate 23. Specifically, the upper buckle plate 13 is arranged on the inner side, the lower buckle plate 23 is arranged on the outer side, the inner side surface of the screw head of the adjusting screw 44 abuts against the outer side surface of the upper buckle plate 13, and the screw rod of the adjusting screw 44 is screwed into the adjusting screw hole 426 of the pull rod 42 through the upper adjusting hole 16 of the upper buckle plate 13. By screwing the adjusting screw 44 from the lower adjusting hole 26 of the lower buckle plate 23, the pressing and loosening adjustment of the busbar connector can be realized.

[0075] Not shown in the figure, when adopting a hydraulic adjustment or an electromagnetic adjustment mechanism, although the cost increases and some space is lost, it is an implementation method of automatic operation. When performing hydraulic adjustment, a small hydraulic cylinder or a hydraulic bladder is arranged between or outside the upper pressure plate 1 and the lower pressure plate 2, and the gap between the two pressure plates is adjusted by the charging and discharging of hydraulic oil; similarly, when adopting an electromagnetic adjustment mechanism, a micro solenoid valve, an electric cylinder or a micro motor is used as a driving part, and the gap between the two pressure plates is adjusted to open and close through an intermediate transmission mechanism.

[0076] Through the connector of the present application, the structural volume can be miniaturized, and the thickness in the pressed state is only 21.3 mm, ensuring that the overall height of the busbar is small, and the minimum can be 200 mm.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A busbar connector, characterized in that: The busbar connector with an overall flat and pressed shape includes an upper pressing plate, a lower pressing plate, a set of elastic pieces, and a locking mechanism. The upper pressing plate and the lower pressing plate are arranged parallel and opposite to each other. The set of elastic pieces is arranged vertically opposite between the upper pressing plate and the lower pressing plate, and a locking space is formed between the innermost set of elastic pieces. The locking mechanism is arranged in the locking space. The upper pressing plate, the lower pressing plate, and the set of elastic pieces are connected through the locking mechanism, and the locking mechanism is operated in a side operation mode to adjust the gap between the oppositely arranged set of elastic pieces, so as to press and separate the copper busbar to be connected. The locking mechanism is a lateral sliding and vertical locking mechanical adjustment mechanism. The lateral sliding and vertical locking mechanical adjustment mechanism includes a pressing groove body, a pull rod, a plurality of lower pull buckles, and an adjustment screw. The plurality of lower pull buckles are inserted on the pressing groove body, and the pull rod is slidably arranged in the pressing groove body. The position of the pull rod in the pressing groove body is adjusted by the adjustment screw, so as to adjust the relative distance between the pressing groove body and the lower pull buckles. The pressing groove body includes a Π-shaped groove body integrally formed by a groove bottom plate and two side plates extending perpendicularly from the edges of the groove bottom plate. A plurality of upper pull claws are formed by upward protrusions at intervals on the upper edges of the two side plates of the Π-shaped groove body. Groove bottom holes for the lower pull buckles to pass through are opened at intervals on the groove bottom plate. A groove cavity for the pull rod to slide is formed by surrounding the groove bottom plate and the side plates. The pull rod includes a pull rod body, push-pull convex bodies formed by upward protrusions at intervals on the upper surface of the pull rod body. A stop surface at one end of each push-pull convex body is perpendicular to the upper surface of the pull rod body, and the other end is provided with an inclined push-pull surface. A push-pull head is vertically protruded upward at one end of the pull rod body, and an adjustment screw hole adapted to the adjustment screw is opened on the outer end surface of the push-pull head. Each lower pull buckle includes a pull buckle body composed of a pull buckle top plate and pull buckle side plates extending perpendicularly from both ends of the pull buckle top plate. A pull buckle cavity is formed by surrounding the pull buckle top plate and the pull buckle side plates. A pull buckle claw is formed by extending downward from the lower edge of the pull buckle side plate and then extending into the pull buckle cavity.

2. The busbar connector according to claim 1, wherein: Multiple sets of elastic piece groups adopt a multi-finger elastic piece structure. Each set of the multiple sets of elastic piece groups includes two oppositely arranged elastic pieces. Each elastic piece includes an integrally formed middle plate, an inclined plate, and a contact pressing plate. Intervals are opened at equal intervals on the inclined plate and the contact pressing plate of each elastic piece, so that the elastic piece has a multi-finger structure. The inclined plate and the contact pressing plate are sequentially arranged on both sides of the middle plate, so that the elastic piece as a whole is in an arched shape, and the inclined plates and contact pressing plates of some elastic pieces extend or protrude beyond the two side edges of the upper pressing plate and the lower pressing plate in the horizontal direction, so that the elastic piece group presents a horizontally extended or protruding structure relative to the entire busbar connector; the multiple sets of elastic piece groups gradually become larger from the inside to the outside, and are stacked and arranged at the middle plate, and locking pressure through holes are opened on each middle plate.

3. The busbar connector according to claim 2, characterized in that: The upper pressing plate includes an integrally formed upper flat plate, two upper end plates, an upper buckling plate, and two upper side plates. The two upper end plates are arranged at both ends of the upper flat plate. The upper buckling plate extends vertically downward from the outer edge of one upper end plate perpendicular to the upper flat plate. The two upper side plates are inclinedly arranged at both ends of the upper flat plate. Two rows of upper pressing holes adapted to the locking pressure through holes are opened on the upper flat plate in parallel and at equal intervals. An upper adjustment hole is opened in the middle of the upper buckling plate.

4. The busbar connector according to claim 2 or 3, characterized in that: The lower pressing plate includes an integrally formed lower flat plate, two lower end plates, a lower fastening plate and two lower side plates. The two lower end plates are arranged at both ends of the lower flat plate. The lower fastening plate extends vertically upward from the outer edge of one lower end plate perpendicular to the lower flat plate. The two lower side plates are obliquely arranged on both sides of the lower flat plate. Two rows of lower pressing holes adapted to the locking and pressing through holes are formed on the lower flat plate in parallel and at equal intervals. A lower adjusting hole is formed in the middle of the lower fastening plate.

5. The bus bar connector according to claim 1, wherein: A pull buckle baffle is formed by extending upward at one side end of the pull buckle top plate. The pull buckle claws of each lower pull buckle are separated by a pull buckle gap into a wide buckle claw and a narrow buckle claw.

6. The busbar connector according to claim 5, wherein: When the upper pressing plate and the lower pressing plate are assembled with the locking mechanism, the upper pull claws pass through the locking and pressing through holes of the elastic piece group and the upper pressing holes of the upper pressing plate and then bend inward relatively. The pull buckle claws pass through the locking and pressing through holes of the elastic piece group and the lower pressing holes of the lower pressing plate and then bend inward relatively, so as to limit the maximum pressing gap of the elastic piece group.

7. The busbar connector according to claim 1, wherein: The locking mechanism further includes a reinforcing fastening plate, and the reinforcing fastening plate is buckled between two adjacent push-pull convex bodies on the pull rod.

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