Lateral plug-in busbar assembly

Abstract

The invention relates to the technical field of busbar connection, and discloses a laterally-inserted busbar assembly, which comprises a first busbar, a second busbar and an electric connection structure, the electric connection structure comprises a first insulating sheath, a second insulating sheath and a side plug-in structure, wherein the first insulating sheath is fixedly coated outside the plug-in end of the first busbar and is provided with a first plug-in port; the second insulating sheath is fixedly coated outside the plug-in end of the second busbar and is provided with a second plug-in port; the side plug-in structure comprises a convex tongue which is integrally arranged on the first busbar and a receiving groove which is concavely arranged on the second busbar and is used for the convex tongue to be laterally inserted, and the second insulating sheath is provided with a second avoiding groove which is used for the convex tongue to be laterally inserted. The first insulating sheath is provided with a first avoiding groove which is used for laterally inserting the second insulating sheath and limiting the second insulating sheath to be separated along the length direction of the first busbar, and a locking structure which is used for limiting the first insulating sheath and the second insulating sheath to be separated along the direction opposite to the inserting direction is arranged between the first insulating sheath and the second insulating sheath. And high-voltage connection is realized through lateral insertion.

Description

Technical Field

[0001] The present invention relates to the technical field of busbar connection, and in particular to a busbar assembly with side-to-side insertion. Background Art

[0002] A high-voltage connector is a connection device used to connect a high-voltage power source and transmit high-voltage electrical energy in an electric vehicle system.

[0003] Chinese Patent with application number 202410865989.6 discloses a high-voltage connector and a plug for the high-voltage connector. The high-voltage connector includes a plug and a socket. The plug includes a plug housing, and two first mounting cavities are spaced apart in the plug housing. The first mounting cavity houses a first insulating sheath, and a plug terminal is sleeved inside the first insulating sheath. The plug terminal includes a first insertion end and a first wiring end connected to each other; the socket includes a socket housing, the socket housing wraps a second insulating sheath, and a socket terminal is sleeved inside the second insulating sheath. The socket terminal includes a second insertion end and a second wiring end connected to each other.

[0004] In the above solution, the first wiring end and the second wiring end are respectively used to be fixedly and electrically connected to the conductor core of the busbar or the cable through a fixed connection method such as crimping or clamping. The first insertion end and the second insertion end are inserted along their own axial directions to achieve electrical connection of the high-voltage connector. However, the arrangement of the plug terminal and the socket terminal will cause the high-voltage connector to occupy a large space, increase the cost, increase the resistance, increase the energy consumption, increase the heat, reduce the transmission efficiency and the rated current-carrying capacity; at the same time, the plug terminal and the socket terminal are respectively connected to the busbar, and the plug terminal and the socket terminal are inserted to achieve electrical connection of the circuit. There are many wiring segments, which increases the risk of the entire circuit being disconnected.

[0005] In addition, the installation space inside the vehicle is limited. However, with the increasing demands of users, the components to be installed are gradually increasing. Therefore, it is necessary to arrange the components closely. However, to ensure that the high-voltage connector can be plugged and unplugged, enough installation space and plugging and unplugging movement stroke need to be reserved for the high-voltage connector. And the high-voltage connector is often arranged between the opposite sides of the battery and the electrical component, which will cause the distance between the battery and the electrical component to be too large, resulting in space waste. Summary of the Invention

[0006] Aiming at the disadvantages of the prior art that due to the setting of terminals in the high-voltage connector and the need to plug and unplug along the axial direction of the terminals, resulting in large space occupied by installation and plugging and unplugging movement, high cost, high resistance, high energy consumption, high heat, low transmission efficiency and low rated current-carrying capacity, the present invention provides a side-to-side pluggable busbar assembly that can achieve high-voltage connection without setting terminals.

[0007] To solve the above technical problems, the present invention is solved by the following technical solutions:

[0008] A side-to-side plug-in busbar assembly comprises a first busbar, a second busbar and an electrical connection structure, wherein the electrical connection structure comprises a first insulating sleeve fixedly covering the outside of the plug-in end of the first busbar and having a first insertion port located on the side wall of the first busbar, a second insulating sleeve fixedly covering the outside of the plug-in end of the second busbar and having a second insertion port located on the side wall of the second busbar, and a side-to-side plug-in structure arranged between the first busbar and the second busbar, wherein the side-to-side plug-in structure comprises a tongue integrally arranged on the plug-in end of the first busbar within the first insulating sleeve and a receiving groove recessed on the plug-in end of the second busbar and allowing the tongue to be inserted laterally, a second avoidance groove connected to the second insertion port and used for the lateral insertion of the tongue is arranged on the second insulating sleeve, a first avoidance groove connected to the first insertion port and used for the lateral insertion of the second insulating sleeve and limiting its escape along the length direction of the first busbar is arranged on the first insulating sleeve, and a locking structure is arranged between the first insulating sleeve and the second insulating sleeve for limiting the escape of both in the opposite direction of the plug-in direction.

[0009] With the above solution, the first busbar and the second busbar are plugged in laterally, the tongue is inserted into the receiving slot through the second insertion port, the second avoidance groove ensures that the tongue can be smoothly inserted laterally, and after the tongue is inserted into the receiving slot, it can fit with the inner wall of the receiving slot to achieve electrical connection. At the same time, the second insulating sheath is inserted into the first insulating sheath through the first insertion port, the first avoidance groove ensures that the second insulating sheath can be smoothly inserted laterally, and after the second insulating sheath is laterally inserted into the first insulating sheath, the first avoidance groove limits the second insulating sheath from coming out along the length direction of the first busbar. When the second insulating sheath is inserted into the first insulating sheath to a preset position, a locking structure limits the second insulating sheath from coming out of the first insulating sheath in the opposite direction of its plug-in direction.

[0010] The tongue is formed by reducing the material of the first busbar plug-in end, and the receiving slot is formed by reducing the material of the second busbar. After the tongue is plugged into the receiving slot, it contacts the inner wall of the receiving slot. There is no need to connect terminals to the first busbar and the second busbar respectively, so the high-voltage electrical connection between the first busbar and the second busbar can be achieved. Therefore, the space is reduced, the cost is reduced, the resistance is reduced, the energy consumption is reduced, the heat is reduced, the transmission efficiency and the rated current are increased, and the wiring segments are reduced, and the risk of disconnection of the entire circuit is reduced. In addition, the tongue is inserted into the receiving slot laterally, and there is no need to reserve the installation distance and plug-in distance of the terminal between the battery and the electrical component, so that the distance between the battery and the electrical component is reduced, and the arrangement is compact, saving space.

[0011] Preferably, a locking structure includes an elastic blocking member which is elastically arranged at the first insertion port and deforms and avoids insertion of the second insulating sheath until the second insulating sheath is inserted to a preset position and resets and limits its reverse movement and separation.

[0012] With the above solution, during the process that the second insulating sheath is inserted into the first insulating sheath through the first insertion opening and along the first avoidance groove, the second insulating sheath first makes extrusion and sliding fit with the elastic blocking member, driving the elastic blocking member to elastically deform to avoid the second insulating sheath until the second insulating sheath is inserted to the preset position. The extrusion force from the second insulating sheath on the elastic blocking member disappears, and the elastic blocking member resets to limit the reverse movement and detachment of the second insulating sheath.

[0013] Preferably, the elastic blocking member includes a third elastic plate. A notch is recessed at the first insertion opening along the insertion direction of the second insulating sheath. One end of the third elastic plate is integrally fixed to the bottom of the notch, and the other end is suspended and bulges to form a third limiting block.

[0014] With the above solution, the third elastic plate provides the elastic deformation and reset ability of the elastic blocking member. During the process that the second insulating sheath is laterally inserted into the first insulating sheath, the second insulating sheath first makes extrusion and sliding fit with the third limiting block, driving the third elastic plate to elastically deform until the second insulating sheath is inserted to the preset position. The third elastic plate resets to drive the third limiting block to abut against the side wall of the second insulating sheath far from the second insertion opening.

[0015] Preferably, a two-stage locking structure for limiting the elastic movement or unlocking of the third limiting block is provided on the first insulating sheath. The two-stage locking structure includes a first insertion pin inserted into the first insulating sheath and reciprocating along the length direction of the first busbar. The first insertion pin is inserted into or detached from the third limiting block as it moves.

[0016] With the above solution, when the first insertion pin is inserted into both the first insulating sheath and the third limiting block at the same time, it limits the accidental elastic movement of the third limiting block relative to the first insulating sheath, realizing two-stage locking and further increasing the stability of the third limiting block in limiting the second insulating sheath. When unlocking, only need to move the first insertion pin to detach from the third limiting block.

[0017] Preferably, a three-stage locking structure for limiting the reverse retraction of the first insertion pin when the first insertion pin is inserted into the third limiting block is provided between the first insertion pin and the first insulating sheath. The three-stage locking structure includes a push block fixedly arranged at one end of the first insertion pin far from the third limiting block, a through groove arranged on the push block along the insertion direction of the second insulating sheath, and an insertion block elastically arranged on the side wall of the first insulating sheath and capable of being inserted into or detached from the through groove.

[0018] With the above solution, when the insertion block is inserted into the through groove, it limits the accidental retraction of the push block and the first insertion pin, ensuring that the first insertion pin always remains inserted into both the first insulating sheath and the third limiting block, realizing three-stage locking. When unlocking, drive the insertion block to elastically retract to detach from the through groove, and while releasing the limit on the push block, move the push block in the reverse direction.

[0019] Preferably, a fourth limiting block protrudes from the side wall of the second insulating sheath away from the second insertion port, and a second insertion pin that can be inserted into or disengaged from the fourth limiting block is reciprocally movably arranged on the first insulating sheath along the length direction of the first busbar.

[0020] With the above solution, when the second insertion pin is inserted into both the first insulating sheath and the fourth limiting block, the movement of the second insulating sheath relative to the first insulating sheath is restricted, further increasing the stability of the insertion of the first insulating sheath and the second insulating sheath. When unlocking, just pull the second insertion pin in the reverse direction to disengage it from the fourth limiting block.

[0021] Preferably, a contact spring piece that elastically abuts against the inner wall of the receiving groove when the tongue is inserted into the receiving groove is fixedly arranged on the upper end face and / or the lower end face of the tongue, and a third insulating layer is fixed on the side wall of the tongue where the contact spring piece is not arranged.

[0022] With the above solution, the contact surface between the tongue and the receiving groove is a hard connection. During long-term use, due to factors such as vibration and wear, there is a risk of poor contact. Therefore, the contact spring piece is provided. The contact spring piece is fixedly arranged on the tongue and elastically abuts against the inner wall of the receiving groove, reducing the possibility of poor contact. At the same time, since the first insertion port and the first avoidance groove are relatively large, there is a risk that a finger can touch the side wall of the tongue. Therefore, the third insulating layer is provided to prevent the finger from touching the dangerous area and increase the safety of use.

[0023] Preferably, the first busbar and the first insulating sheath are connected through a first fixing structure. The first fixing structure includes a first limiting groove recessed on the side wall of the first busbar and a first limiting block that is elastically movable along the depth direction of the first limiting groove on the first insulating sheath and can be inserted into or disengaged from the first limiting groove. When the first limiting groove and the first limiting block are inserted and limited, a first insulating layer that restricts the first limiting block from disengaging from the first limiting groove is coated outside the first busbar.

[0024] With the above solution, during the process of the first insulating sheath being sleeved on the first busbar, the first busbar first makes extrusion and sliding fit with the first limiting block, driving it to elastically move in a direction away from the first limiting groove, ensuring that the first insulating sheath is smoothly sleeved on the first busbar until the first limiting block is aligned with the first limiting groove. The extrusion force from the first busbar on the first limiting block disappears, and the first limiting block resets and is inserted into the first limiting groove, restricting the first insulating sheath and the first busbar from disengaging in the opposite direction of the insertion direction. After that, a first insulating layer is coated outside the first busbar, and the first insulating layer covers the first limiting block, restricting the first limiting block from disengaging from the first limiting groove and increasing the stability of the connection between the first insulating sheath and the first busbar.

[0025] Preferably, an installation strip is fixedly arranged on the outer wall of the second insulating sheath. The first insertion port is recessed along the insertion direction of the second insulating sheath with a third avoidance groove for the installation strip to slide. A high-voltage interlock structure for detecting whether the assembly is qualified is arranged between the installation strip and the third avoidance groove.

[0026] Preferably, the high-voltage interlock structure includes two conductive contact rods arranged at the bottom of the third avoidance groove, a conductive contact plate fixedly arranged on the side wall of the installation strip close to the conductive contact rods, and a signal device electrically connected to the ends of the two conductive contact rods away from the conductive contact plate. The signal device is used to detect whether the conductive contact plate contacts the two conductive contact rods when the first insulating sheath and the second insulating sheath are inserted and limited. If they contact, the assembly is qualified; otherwise, the assembly is unqualified.

[0027] With the above scheme, high-voltage interlock is a safety function, mainly checking the integrity and continuity of the entire high-voltage system circuit through low-voltage signals, and timely identifying abnormal disconnection of the circuit to timely disconnect the high voltage. Simply put, it is to check the on-off of the high-voltage circuit through the on-off signal of the low-voltage circuit. When the second insulating sheath is laterally inserted into the first insulating sheath, the installation strip slides into the third avoidance groove. When the second insulating sheath is inserted to the preset position, the two conductive contact rods in the third avoidance groove and the conductive contact plate on the installation strip will contact, and a low-voltage circuit is formed among the signal device, the two conductive contact rods, and the conductive contact plate. On the contrary, if the two conductive contact rods and the conductive contact plate do not contact, it means that the assembly is unqualified, or the busbar assembly is abnormally detached and disconnected.

[0028] Since the present invention adopts the above technical solutions, it has remarkable technical effects: The tongue is formed by reducing the material of the first busbar insertion end, and the receiving groove is formed by reducing the material of the second busbar insertion end. After the tongue and the receiving groove are inserted, electrical connection is achieved, and there is no need to connect terminals to the first busbar and the second busbar respectively. Therefore, the space is reduced, the cost is reduced, the resistance is reduced, the energy consumption is reduced, the heat is reduced, the transmission efficiency and the rated current carrying capacity are increased. At the same time, the wiring section is reduced, and the risk of the entire circuit being disconnected is reduced. In addition, the tongue is laterally inserted into the receiving groove, and there is no need to reserve the installation distance and the plugging distance of the terminals between the battery and the electrical components, so that the distance between the battery and the electrical components is reduced, and they are closely arranged, saving space. The setting of the first insulating sheath, the second insulating sheath, and the first locking structure prevents the busbar assembly from detaching, and the second locking structure and the third locking structure further increase the connection stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is an isometric view of an assembled laterally inserted busbar assembly in the embodiment Figure 1 ;

[0030] Figure 2 is Figure 1 the enlarged view of part A in

[0031] Figure 3 Isometric view after assembly of a side - inserted busbar component in the embodiment Figure 2 ;

[0032] Figure 4 Is Figure 3 The enlarged view at position B in

[0033] Figure 5 Is Figure 4 The enlarged view at position C in

[0034] Figure 6 Isometric view of the first and second busbars of a side - inserted busbar component in the embodiment before insertion Figure 1 ;

[0035] Figure 7 Is Figure 6 The enlarged view at position D in

[0036] Figure 8 Is Figure 6 The enlarged view at position E in

[0037] Figure 9 Isometric view of the first and second busbars of a side - inserted busbar component in the embodiment before insertion Figure 2 ;

[0038] Figure 10 Is Figure 9 The enlarged view at position F in

[0039] Figure 11 Is the disassembly of a side - inserted busbar component in the embodiment Figure 1 ;

[0040] Figure 12 Is Figure 11 The enlarged view at position G in

[0041] Figure 13 Is Figure 11 The enlarged view at position H in

[0042] Figure 14 Is Figure 11 The enlarged view at position I in

[0043] Figure 15 Is the disassembly of a side - inserted busbar component in the embodiment Figure 2 ;

[0044] Figure 16 Is Figure 15 The enlarged view at position J in

[0045] Figure 17 Is the schematic circuit diagram of the high - voltage interlock structure in a side - inserted busbar component in the embodiment.

[0046] The names of the parts referred to by each digital label in the above drawings are as follows: 1. First busbar; 2. Tongue; 3. Second busbar; 4. Receiving groove; 5. First insulating sheath; 6. First insertion port; 7. First limiting groove; 8. First elastic plate; 9. First limiting block; 10. First guiding inclined surface; 11. First insulating layer; 12. Third insulating layer; 13. Second insulating sheath; 14. Second insertion port; 15. Second limiting groove; 16. Second elastic plate; 17. Second limiting block; 18. Second guiding inclined surface; 19. Second insulating layer; 20. Third elastic plate; 21. Third limiting block; 22. Third through groove; 23. Third guiding inclined surface; 24. First through groove; 25. First pin; 26. Pushing block; 27. Elastic rod; 28. First avoiding sliding groove; 29. Inserting block; 30. Through groove; 31. Fourth limiting block; 32. Fourth through groove; 34. Second through groove; 35. Second pin; 36. Fixing plate; 37. Anti-detachment block; 38. Hook; 39. Card slot; 40. Installation strip; 41. Third avoiding groove; 42. Conductive contact rod; 43. Conducting wire; 44. Conductive contact plate; 45. First avoiding groove; 46. Second avoiding groove; 47. Second avoiding sliding groove; 48. Low-voltage connector; 49. Signal device; 50. Contact spring piece; 51. Cutting groove. Detailed implementation mode

[0047] The present invention will be further described in detail below in conjunction with the drawings and embodiments.

[0048] Embodiment

[0049] A laterally inserted busbar assembly, referring to Figures 1 to 17 , includes a first busbar 1 and a second busbar 3. The outer part of the insertion end of the first busbar 1 is fixedly covered with a first insulating sheath 5, and the outer part of the insertion end of the second busbar 3 is fixedly covered with a second insulating sheath 13.

[0050] In the first insulating sheath 5, a tongue 2 is formed by material reduction on the insertion end of the first busbar 1, that is, the tongue 2 is integrally arranged with the first busbar 1. Contact spring pieces 50 are fixedly arranged on the upper end surface and the lower end surface of the tongue 2 respectively. In the second insulating sheath 13, a receiving groove 4 for laterally inserting the tongue 2 and the contact spring pieces 50 is recessed on the insertion end of the second busbar 3. A silver layer is plated on the surface where the contact spring pieces 50 elastically abut against the inner wall of the receiving groove 4 to reduce the resistance.

[0051] In order to ensure that the tongue 2 and the receiving groove 4 can be plugged in laterally, the side wall of the second insulating sheath 13 is provided with a second insertion port 14 for the tongue 2 and the contact spring 50 to be inserted laterally, and the second insulating sheath 13 is also provided with a second avoidance groove 46 connected to the second insertion port 14 and used for the tongue 2 to be inserted laterally. Similarly, the side wall of the first insulating sheath 5 is provided with a first insertion port 6 for the second insulating sheath 13 to be inserted laterally, and the first insulating sheath 5 is also provided with a first avoidance groove 45 connected to the first insertion port 6 and used for the second insulating sheath 13 to be inserted laterally while limiting its escape along the length direction of the first busbar 1. The third insulating layer 12 is fixed on the side wall of the tongue 2 where the contact spring 50 is not provided, and the connection surface between the tongue 2 and the third insulating layer 12 is stepped, so that the connection between the two is tighter.

[0052] A groove 51 is recessed at the first insertion port 6 along the insertion direction of the second insulating sheath 13, and a third spring plate 20 is arranged in the groove 51. One end of the third spring plate 20 is integrally fixed to the bottom of the groove 51, and the other end is suspended and raised to form a third limit block 21. The third spring plate 20 can be elastically deformed close to or away from the tongue 2. A third guide bevel 23 is provided on the third limit block 21. When the second insulating sheath 13 is inserted into the first insulating sheath 5 through the first insertion port 6 and along the first avoidance groove 45, the second insulating sheath 13 first abuts against the third guide bevel 23. Since the third spring plate 20 can be elastically deformed away from the protruding tongue 2, the second insulating sheath 13 can be squeezed and slidably cooperated with the third guide bevel 23 to drive the third limit block 21 to move away from the protruding tongue 2 to avoid the second insulating sheath 13 until the second insulating sheath 13 is inserted to the preset position. The squeezing force from the second insulating sheath 13 on the third limit block 21 and the third spring plate 20 disappears, and the third spring plate 20 is reset, driving the third limit block 21 to move close to the protruding tongue 2 and reset. At this time, the side wall of the third limit block 21 away from the third guide bevel 23 abuts against the side wall of the second insulating sheath 13 away from the second insertion port 14, thereby limiting the reverse movement of the second insulating sheath 13.

[0053] A first pin 25 is provided on the first insulating sheath 5 and reciprocates along the length direction of the first busbar 1, and a first through slot 24 is provided on the first insulating sheath 5 for the first pin 25 to pass through and move. As the first pin 25 moves, it engages with the third limit block 21 to limit the third limit block 21 from bouncing relative to the first insulating sheath 5, or disengages from the third limit block 21 to release the limit. The third limit block 21 is provided with a third through slot 22 for engaging with the first pin 25.

[0054] An elastic rod 27 is provided on the side wall of the first insulating sheath 5, one end of the elastic rod 27 is fixed on the side wall of the first insulating sheath 5, and the other end is suspended. A push block 26 is fixed on the end of the first plug 25 away from the third limit block 21, and a first avoidance chute 28 is provided on the push block 26 so that the push block 26 does not interfere with the elastic rod 27 when the push block 26 moves along the length direction of the first busbar 1, that is, when the push block 26 moves along the length direction of the first busbar 1, the elastic rod 27 is in the first avoidance chute 28 and moves relative to the first avoidance chute 28. A through groove 30 is provided along the insertion direction of the second insulating sheath 13 on the side of the first avoidance chute 28 away from the first insulating sheath 5, and an insert block 29 is provided on the suspended end of the elastic rod 27. When the insert block 29 is plugged into the through groove 30, the first plug 25 is restricted from accidentally retreating, so as to ensure that the first plug 25 is always plugged into the first insulating sheath 5 and the third limit block 21. When unlocking, the insert block 29 is driven to elastically retreat to be separated from the through slot 30, and the limit on the push block 26 is released, and the push block 26 is moved in the reverse direction.

[0055] The side wall of the first insulating sheath 5 on which the spring rod 27 is provided is provided with a fixed plate 36 protruding outwards, and the side of the push block 26 away from the first plug 25 is detachably connected with an anti-dropping block 37. When the anti-dropping block 37 is not installed on the push block 26 and the push block 26 is retracted to abut against the fixed plate 36, the first plug 25 is separated from the first insulating sheath 5, which is convenient for the push block 26 and the first plug 25 to be assembled or disassembled on the first insulating sheath 5; when the anti-dropping block 37 is installed on the push block 26 and the push block 26 is retracted to abut against the anti-dropping block 37 and the fixed plate 36, the first plug 25 is still plugged with the first insulating sheath 5, preventing the push block 26 and the first plug 25 from accidentally detaching from the first insulating sheath 5. The anti-dropping block 37 is provided with a second avoidance groove 47 that does not interfere with the spring rod 27 when it moves along the length direction of the first busbar 1. A hook 38 is convexly provided on the anti-drop block 37, and a slot 39 for the hook 38 to be inserted into is provided on the push block 26. The hook 38, the slot 39 and the connection method of the two are all prior arts and will not be described in detail here.

[0056] A fourth limit block 31 is convexly provided on the side wall of the second insulating sheath 13 away from the second insertion port 14, a second plug 35 is provided on the first insulating sheath 5 and reciprocates along the length direction of the first busbar 1, and a second through slot 34 for the second plug 35 to pass through and move is provided on the first insulating sheath 5, and the second plug 35 is plugged into the fourth limit block 31 as it moves to limit the movement of the second insulating sheath 13 relative to the first insulating sheath 5, or is disengaged from the fourth limit block 31 to release the limit, and a fourth through slot 32 plugged into the second plug 35 is provided on the fourth limit block 31. In this embodiment, the first plug 25 and the second plug 35 are two parallel sections of the U-shaped plug, and the arc section in the U-shaped plug is integrally injection molded with the push block 26.

[0057] A mounting strip 40 is fixedly provided on the outer wall of the second insulating sheath 13, and a third avoidance groove 41 is recessed in the first insertion opening 6 along the insertion direction of the second insulating sheath 13 for the mounting strip 40 to slide, and a high-voltage interlocking structure is provided between the mounting strip 40 and the third avoidance groove 41 for detecting whether the assembly is qualified. The high-voltage interlocking structure includes two conductive contact rods 42 arranged at the bottom of the third avoidance groove 41 and a conductive touch plate 44 fixedly arranged on the side wall of the mounting bar 40 near the conductive contact rods 42. The ends of the two conductive contact rods 42 away from the conductive touch plate 44 both pass through the first insulating sheath 5 and are respectively connected to the wires 43 through the low-voltage connector 48. The sides of the two wires 43 away from the conductive contact rods 42 are electrically connected to a signal device 49. The signal device 49 is used to detect whether the conductive touch plate 44 is in contact with the two conductive contact rods 42 when the first insulating sheath 5 and the second insulating sheath 13 are plugged in and limited. If so, the assembly is qualified, and a low-voltage circuit is formed between the signal device 49, the two wires 43, the two low-voltage connectors 48, the two conductive contact rods 42 and the conductive touch plate 44; otherwise, the assembly is unqualified. The signal device 49 sends a signal. If the low-voltage circuit is connected, the signal device 49 receives the signal and the busbar assembly is assembled in place. If the low-voltage circuit is not connected, the signal device 49 does not receive the signal, the busbar assembly is not assembled, or is abnormally disconnected. The signal device 49 and its signal generation and reception detection methods are all prior art. Figures 1 to 16 The ends of the two conductive contact rods 42 near the conductive contact plate 44 are bent into a hook shape, which has a certain elastic deformation capacity and increases the stability of the connection between the two conductive contact rods 42 and the conductive contact plate 44.

[0058] A first limiting groove 7 is concavely provided on the side wall of the first busbar 1, and a first spring plate 8 is extended and provided on the first insulating sheath 5 along the length direction of the first busbar 1, that is, one end of the first spring plate 8 is integrally fixed with the first insulating sheath 5, and the other end is suspended, and the first spring plate 8 elastically deforms along the depth direction of the first limiting groove 7. A first limiting block 9 that can be inserted into or out of the first limiting groove 7 is provided on the suspended end of the first spring plate 8. A first guiding inclined surface 10 is provided on the first limiting block 9. When the first busbar 1 and the first insulating sheath 5 are sleeved, the first busbar 1 first abuts against the first guide slope 10. Since the first spring plate 8 can be elastically deformed away from the first limiting groove 7, the first busbar 1 can be squeezed and slid with the first guide slope 10 to drive the first limiting block 9 to move away from the first limiting groove 7 to avoid the first busbar 1, until the first limiting block 9 and the first limiting groove 7 are directly opposite, the squeezing force from the first busbar 1 on the first limiting block 9 and the first spring plate 8 disappears, the first spring plate 8 is reset, and the first limiting block 9 is driven to move close to the first limiting groove 7 and reset, so that the first limiting block 9 and the first limiting groove 7 are plugged in.

[0059] At least one set of the first limiting groove 7, the first elastic plate 8 and the first limiting block 9 are circumferentially arranged at intervals around the first busbar 1. After the first limiting groove 7 and the first limiting block 9 are inserted and limited, a first insulating layer 11 is coated on the part of the first busbar 1 that is not coated with the first insulating sheath 5. The first insulating layer 11 also coats the side of the first insulating sheath 5 where the first elastic plate 8 is arranged, the first elastic plate 8 and the first limiting block 9, so as to realize the external insulation of the first busbar 1 and ensure that the first limiting block 9 will not bounce away from the first limiting groove 7 in the direction away from the first limiting groove 7.

[0060] A second limiting groove 15 is recessed on the side wall of the second busbar 3. A second elastic plate 16 is arranged on the second insulating sheath 13 along the length direction of the second busbar 3, that is, one end of the second elastic plate 16 is integrally fixed with the second insulating sheath 13, and the other end is suspended. The second elastic plate 16 elastically deforms along the depth direction of the second limiting groove 15. A second limiting block 17 that can be inserted into or disengaged from the second limiting groove 15 is arranged on the suspended end of the second elastic plate 16. A second guiding inclined surface 18 is arranged on the second limiting block 17. When the second busbar 3 and the second insulating sheath 13 are sleeved, the second busbar 3 first abuts against the second guiding inclined surface 18. Since the second elastic plate 16 can elastically deform away from the second limiting groove 15, the second busbar 3 can be in extrusion and sliding fit with the second guiding inclined surface 18 to drive the second limiting block 17 to move away from the second limiting groove 15 to avoid the second busbar 3. Until the second limiting block 17 and the second limiting groove 15 are aligned, the extrusion force from the second busbar 3 on the second limiting block 17 and the second elastic plate 16 disappears, and the second elastic plate 16 resets, driving the second limiting block 17 to move closer to the second limiting groove 15 to reset, realizing the insertion of the second limiting block 17 and the second limiting groove 15.

[0061] At least one set of the second limiting groove 15, the second elastic plate 16 and the second limiting block 17 are circumferentially arranged at intervals around the second busbar 3. After the second limiting groove 15 and the second limiting block 17 are inserted and limited, a second insulating layer 19 is coated on the part of the second busbar 3 that is not coated with the second insulating sheath 13. The second insulating layer 19 also coats the side of the second insulating sheath 13 where the second elastic plate 16 is arranged, the second elastic plate 16 and the second limiting block 17, so as to realize the external insulation of the second busbar 3 and ensure that the second limiting block 17 will not bounce away from the second limiting groove 15 in the direction away from the second limiting groove 15.

[0062] During assembly, first fixedly sleeved the first insulating sheath 5 on the first bus bar 1 and covered the first insulating layer 11; then fixedly sleeved the second insulating sheath 13 on the second bus bar 3 and covered the second insulating layer 19. The push block 26, the first pin 25 and the second pin 35 are installed on the first insulating sheath 5, so that the elastic rod 27 is located in the first avoidance chute 28, and the first pin 25 and the second pin 35 are respectively inserted into the first insulating sheath 5. After the push block 26, the first pin 25 and the second pin 35 are installed on the first insulating sheath 5, then the anti-disengagement block 37 is assembled onto the push block 26.

[0063] Subsequently, with the first insertion port 6 and the second insertion port 14 facing each other, the first bus bar 1 and the second bus bar 3 are laterally inserted. The tongue 2 and the contact spring piece 50 are inserted into the receiving groove 4 through the second insertion port 14. The second avoidance groove 46 ensures that the tongue 2 can be smoothly inserted laterally. After the tongue 2 and the contact spring piece 50 are inserted into the receiving groove 4, the contact spring piece 50 can be elastically abutted against the inner wall of the receiving groove 4 to achieve electrical connection; at the same time, the second insulating sheath 13 is inserted into the first insulating sheath 5 through the first insertion port 6. The first avoidance groove 45 ensures that the second insulating sheath 13 can be smoothly inserted laterally and restricts the second insulating sheath 13 from disengaging along the length direction of the first bus bar 1. At the same time, the mounting strip 40 is inserted into the third avoidance groove 41.

[0064] When the second insulating sheath 13 is inserted into the first insulating sheath 5 through the first insertion port 6 and along the first avoidance groove 45, the second insulating sheath 13 and the third guiding inclined surface 23 are in extrusion and sliding fit, driving the third limiting block 21 to move away from the tongue 2 to avoid the second insulating sheath 13 until the second insulating sheath 13 is inserted to the preset position. The extrusion force from the second insulating sheath 13 on the third limiting block 21 and the third elastic plate 20 disappears, and the third elastic plate 20 resets, driving the third limiting block 21 to move closer to the tongue 2 to reset. At this time, the side wall of the third limiting block 21 away from the third guiding inclined surface 23 abuts against the side wall of the second insulating sheath 13 away from the second insertion port 14, restricting the reverse movement of the second insulating sheath 13. At this time, the two conductive contact rods 42 and the conductive contact plate 44 are in contact, and the low-voltage circuit is connected.

[0065] Push the insertion block 29 to elastically retreat close to the first insulating sheath 5 to prevent the insertion block 29 from obstructing the movement of the push block 26. At the same time, push the push block 26 to move close to the third limiting block 21 until the insertion block 29 slides into the first avoidance chute 28, releasing the insertion block 29. Under the elastic reset of the elastic rod 27, the insertion block 29 abuts against one side of the first avoidance chute 28 provided with the through groove 30. The push block 26 continues to move close to the third limiting block 21, so that the first pin 25 is inserted into the third limiting block 21 to limit the elastic movement of the third limiting block 21 relative to the first insulating sheath 5, and the second pin 35 is inserted into the fourth limiting block 31 to limit the movement of the second insulating sheath 13 relative to the first insulating sheath 5. At this time, the insertion block 29 is aligned with the through groove 30. Under the elastic reset of the elastic rod 27, the insertion block 29 is inserted into the through groove 30 to limit the backward movement of the push block 26.

[0066] During disassembly, push the insertion block 29 to elastically retreat close to the first insulating sheath 5 until it disengages from the through groove 30. At the same time, push the push block 26 to move away from the third limiting block 21, so that the first pin 25 disengages from the third limiting block 21 and the second pin 35 disengages from the fourth limiting block 31. Finally, drive the third limiting block 21 to elastically move away from the tongue 2 to release the limit on the second insulating sheath 13, and pull the second insulating sheath 13 to slide it laterally out of the first insulating sheath 5.

[0067] The above is only the preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A side-to-side plug-in busbar assembly, comprising a first busbar (1), a second busbar (3) and an electrical connection structure, characterized in that: The electrical connection structure comprises a first insulating sheath (5) fixedly covering the plug-in end of the first busbar (1) and having a first insertion port (6) facing the side wall of the first busbar (1), a second insulating sheath (13) fixedly covering the plug-in end of the second busbar (3) and having a second insertion port (14) facing the side wall of the second busbar (3), and a side-to-side plug-in structure arranged between the first busbar (1) and the second busbar (3), the side-to-side plug-in structure comprising a tongue (2) integrally arranged on the plug-in end of the first busbar (1) and recessed on the plug-in end of the second busbar (3). A receiving groove (4) is provided for the lateral insertion of the tongue (2); a second avoidance groove (46) is provided on the second insulating sleeve (13) and is connected to the second insertion port (14) and is used for the lateral insertion of the tongue (2); a first avoidance groove (45) is provided on the first insulating sleeve (5) and is connected to the first insertion port (6) and is used for the lateral insertion of the second insulating sleeve (13) and limits the escape of the second insulating sleeve (13) along the length direction of the first busbar (1); and a locking structure is provided between the first insulating sleeve (5) and the second insulating sleeve (13) to limit the escape of the two in the direction opposite to the plug-in direction.

2. A side-to-side plug-in busbar assembly according to claim 1, characterized in that: A locking structure comprises an elastic blocking member which is elastically arranged at the first insertion opening (6) and deforms and avoids the insertion of the second insulating sheath (13) until the second insulating sheath (13) is inserted to a preset position and resets and restricts its reverse movement and disengagement.

3. A side-to-side plug-in busbar assembly according to claim 2, characterized in that: The elastic blocking member comprises a third spring plate (20), a notch (51) is recessedly provided at the first insertion opening (6) along the insertion direction of the second insulating sheath (13), one end of the third spring plate (20) is integrally fixed to the bottom of the notch (51) and the other end is suspended and raised to form a third limit block (21).

4. A side-to-side plug-in busbar assembly according to claim 3, characterized in that: The first insulating sheath (5) is provided with a two-way locking structure for causing a third limiting block (21) to be elastically moved or released from limiting, the two-way locking structure comprising a first latch (25) inserted into the first insulating sheath (5) and reciprocating along the length direction of the first busbar (1), the first latch (25) being connected to or disconnected from the third limiting block (21) as it moves.

5. A side-to-side plug-in busbar assembly according to claim 4, characterized in that: A three-way locking structure is provided between the first latch (25) and the first insulating sheath (5) for limiting the first latch (25) from retreating in the reverse direction when the first latch (25) is plugged into the third limit block (21), the three-way locking structure comprising a push block (26) fixedly arranged on an end of the first latch (25) away from the third limit block (21), a through groove (30) provided on the push block (26) along the insertion direction of the second insulating sheath (13), and an insert block (29) elastically provided on the side wall of the first insulating sheath (5) and capable of being plugged into or disengaged from the through groove (30).

6. A side-to-side plug-in busbar assembly according to any one of claims 1 to 5, characterized in that: A fourth limit block (31) is protrudingly provided on the side wall of the second insulating sheath (13) away from the second insertion opening (14), and a second latch (35) is reciprocatingly provided on the first insulating sheath (5) along the length direction of the first busbar (1) and can be plugged into or disengaged from the fourth limit block (31).

7. The side-to-side plug-in busbar assembly according to claim 1, characterized in that: A contact spring (50) is fixedly arranged on the upper end surface and / or the lower end surface of the tongue (2) and elastically abuts against the inner wall of the receiving groove (4) when the tongue (2) is plugged into the receiving groove (4), and a third insulating layer (12) is fixedly arranged on the side wall of the tongue (2) where the contact spring (50) is not arranged.

8. The side-to-side plug-in busbar assembly according to claim 1, characterized in that: The first busbar (1) and the first insulating sheath (5) are connected via a first fixing structure, the first fixing structure comprising a first limiting groove (7) recessed on a side wall of the first busbar (1) and a first limiting block (9) elastically arranged along a depth direction of the first limiting groove (7) on the first insulating sheath (5) and capable of being inserted into or separated from the first limiting groove (7); when the first limiting groove (7) and the first limiting block (9) are inserted and limited, a first insulating layer (11) is coated on the outside of the first busbar (1) to limit the first limiting block (9) from separating from the first limiting groove (7).

9. The side-to-side plug-in busbar assembly according to claim 1, characterized in that: A mounting strip (40) is fixedly arranged on the outer wall of the second insulating sheath (13); a third avoidance groove (41) is recessed in the first insertion opening (6) along the insertion direction of the second insulating sheath (13) for the mounting strip (40) to slide; and a high-voltage interlocking structure for detecting whether the assembly is qualified is arranged between the mounting strip (40) and the third avoidance groove (41).

10. The side-to-side plug-in busbar assembly according to claim 9, characterized in that: The high-voltage interlocking structure comprises two conductive contact rods (42) arranged at the bottom of the third avoidance groove (41), a conductive touch plate (44) fixedly arranged on the side wall of the mounting strip (40) close to the conductive contact rods (42), and a signal device (49) electrically connected to the ends of the two conductive contact rods (42) away from the conductive touch plate (44), the signal device (49) being used to detect whether the conductive touch plate (44) is in contact with the two conductive contact rods (42) when the first insulating sheath (5) and the second insulating sheath (13) are plugged in and limited, and if so, the assembly is qualified; Otherwise, the assembly is unqualified.

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