High-voltage metal bar connector

Abstract

The utility model relates to the field of connectors, and discloses a high-voltage metal bar connector, which comprises a plug, a socket and an anti-loosening structure which is arranged between the plug and the socket and used for preventing the plug and the socket from loosening after the plug and the socket are hermetically plugged, the plug comprises a shell and a conductive busbar fixedly arranged in the shell, one end of the conductive busbar penetrates out of the shell in a sealed mode, a locking structure for keeping the conductive busbar and the conductive column in contact is arranged between the conductive busbar and the conductive column, and a protective cover capable of opening or closing the shell in a sealed mode is hinged to the side, away from the installation base, of the shell. A locking structure for limiting rotation of the protective cover after the protective cover seals and closes the shell is arranged between the protective cover and the shell, the connector limits loosening of the conductive busbar and the conductive column through the locking structure, the anti-loosening structure limits loosening of the mounting base and the shell, stable electric connection of the connector is guaranteed, meanwhile, the protective cover is opened to be used for mounting the locking structure, and the connector is prevented from being damaged. During closing, the sealing blocks the locking structure to avoid exposure of the high-pressure joint, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of connectors, in particular to a high-voltage metal bus connector. Background Art

[0002] High-voltage connectors connect by plugging male and female terminals together, achieving electrical connection through plugging and unplugging between the plug and socket. To ensure reliable connection, a retaining mechanism is required to prevent the plug and socket from becoming detached during use.

[0003] Chinese patent application number 201821312729.2 discloses a high-voltage connector with an anti-drop buckle, including a male end and a female end, the male end having a male end housing, a first male fastener and a second male fastener, and the female end having a female end housing, a first female fastener and a second female fastener; the male end housing and the female end housing are plugged into each other so that the first male fastener is engaged with the first female fastener, and the second male fastener is engaged with the second female fastener in sequence; the female end housing is provided with an anti-drop buckle that locks the second female fastener to prevent the second female fastener from separating from the second male fastener or unlocks the second female fastener so that the second female fastener is separated from the second male fastener.

[0004] This solution further locks the second female fastener through the anti-loosening buckle on the female shell, making it difficult for the second female fastener and the second male fastener to be unlocked, thereby making the connection structure between the male shell and the female shell more stable and less likely to loosen, thereby improving the reliability and safety performance of the connector.

[0005] However, the above solution only achieves a stable connection between the male end housing and the female end housing. During long-term use, the contact between the conductive parts in the male end and the conductive parts in the female end may become loose, resulting in the risk of poor contact between the two conductive parts even when the male end housing and the female end housing are stably connected. Utility Model Content

[0006] The utility model provides a high-voltage metal busbar connector to address the disadvantage in the prior art that even if the male housing and the female housing are stably connected, the two conductive parts may still have poor contact.

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

[0008] A high-voltage metal bus connector includes a plug, a socket, and an anti-detachment structure arranged between the two to prevent the two from loosening after the two are sealed and plugged together. The socket includes a mounting base and a conductive column arranged on the mounting base. The plug includes a shell and a conductive busbar fixedly arranged in the shell, one end of which is sealed and extends out of the shell. A locking structure is provided between the conductive busbar and the conductive column to maintain contact between the two. A protective cover that can open or seal the shell is hingedly provided on the side of the shell away from the mounting base. A locking structure is provided between the protective cover and the shell to limit the rotation of the protective cover when the protective cover seals the shell.

[0009] With this solution, after the mounting base and housing are plugged in, the conductive busbar and conductive post are in contact. The protective cover flips upward to reveal the conductive busbar inside the housing. The locking structure locks the conductive busbar and conductive post to maintain contact and prevent them from loosening. The anti-detachment structure also locks the mounting base and housing to prevent them from loosening, thereby ensuring a stable electrical connection for the connector. Finally, the protective cover flips downward to seal the housing, shielding the conductive busbar and locking structure inside the housing, that is, shielding the high-voltage connection. The locking structure also limits the rotation of the protective cover, preventing direct contact with this area and improving safety.

[0010] Preferably, the locking structure includes a locking bolt, one end of which passes through the conductive busbar and is tightly fitted with the conductive column thread to prevent the conductive busbar and the conductive column from loosening.

[0011] With this solution, the locking bolts securely connect the busbar and the conductive posts, preventing them from loosening. The contact between the busbar and the conductive posts ensures electrical continuity between the socket and the plug. The locking bolts not only secure the connection but also facilitate electrical continuity. Furthermore, the design offers low contact resistance, meets temperature rise standards, and provides a stable, simple structure and reliable performance.

[0012] Preferably, the locking structure includes a locking bolt, one end of which passes through the protective cover and is tightly matched with the shell thread to achieve a fixed connection between the protective cover and the shell.

[0013] With the above solution, the locking bolt realizes a fixed connection between the protective cover and the housing.

[0014] Preferably, the anti-slip structure includes an anti-slip bolt, one end of which passes through the shell and is tightly matched with the mounting seat thread to achieve a fixed connection between the shell and the mounting seat.

[0015] With the above solution, the anti-loosening bolts achieve a fixed connection between the housing and the mounting seat to prevent the two from loosening.

[0016] Preferably, a through slot for the conductive busbar to pass through is provided on the housing, and a sealing structure is provided between the through slot and the conductive busbar to seal the two.

[0017] Preferably, the sealing structure includes a third sealing ring disposed in the through groove and sealingly abutting against the outer surface of the conductive busbar.

[0018] With the above solution, the inner ring wall of the third sealing ring is in sealing contact with the outer ring wall of the conductive busbar, and the outer ring wall of the third sealing ring is in sealing connection with the inner ring wall of the through slot, thereby achieving a sealed connection between the through slot and the conductive busbar.

[0019] Preferably, the sealing structure includes an annular airbag fixedly provided on the inner wall of the through groove, which can expand to seal against the outer ring wall of the conductive busbar or shrink and then separate from the conductive busbar, and a driving structure provided on the shell to drive the annular airbag to expand or shrink.

[0020] The above solution uses a third sealing ring, which is a common sealing method. However, to ensure sealing performance, the inner ring wall of the third sealing ring is in sealed contact with the outer ring wall of the conductive busbar. This results in the conductive busbar being subject to greater sliding friction resistance when passing through the third sealing ring. In addition, to ensure sealing performance, the dimensions of the third sealing ring and the conductive busbar are fixed. If a small conductive busbar is used, it is necessary to find and replace a suitable third sealing ring, which reduces adaptability. Therefore, it is necessary to provide a sealing structure that facilitates the passage of the conductive busbar through the through slot and achieves a sealed connection between the two after the conductive busbar passes through the through slot.

[0021] This solution utilizes an expandable and contractible annular airbag. Initially, the airbag contracts and adheres to the inner wall of the slot. This prevents the busbar from contacting the slot and creating no resistance to its movement, ensuring smooth passage and securement within the housing. Subsequently, a drive mechanism inflates the airbag until it abuts against the outer surface of the busbar, achieving a seal. The inflated airbag can adapt to busbars of varying sizes, ensuring a tight seal.

[0022] Preferably, the driving structure includes a cover body that is sleeved on the conductive busbar and can move closer to or away from the shell, a telescopic groove that is recessed on the shell and connected to the annular airbag, and a driving block that is sealed and elastically telescopic in the telescopic groove along the moving direction of the cover body and partially extends out of the shell under normal conditions to shrink the annular airbag, and seals and retracts when the cover body moves close to the shell to expand the annular airbag. A clamping structure is provided between the cover body and the shell to limit the cover body from being separated from the shell when the annular airbag is expanded.

[0023] With this solution, the cover moves closer to the housing, causing the seal of the driver block to retract. This squeezes the air in the expansion slot into the annular airbag, causing it to expand. Subsequently, the cover and housing are engaged via a snap-fit mechanism, preventing the cover from separating from the housing and ensuring the annular airbag remains in an inflated state. Conversely, when the cover and housing are released and moved away from the housing, the seal of the driver block elastically extends, drawing air from the annular airbag into the expansion slot, causing it to contract.

[0024] Preferably, the clamping structure includes a clamping block protruding from the shell and a clamping ring provided on the cover body, which can be squeezed and slidably matched with the clamping block and then pass over the clamping block to be clamped on the clamping block. The side of the clamping block close to the cover body is provided with an introduction slope that gradually inclines from close to the shell to away from the shell away from the cover body, and the side of the clamping ring close to the clamping block is provided with a mating slope that cooperates with the introduction slope to drive the clamping ring to rotate.

[0025] With this solution, as the cover moves toward the housing, the mating bevel on the snap ring contacts and slides with the guiding bevel on the block, forcing the snap ring to deform away from the block. Once the cover has passed the block, the external force causing the snap ring to deform disappears, and the snap ring returns to its original shape, abutting against the flat surface of the block away from the cover, thus securing the snap ring and the block. To disassemble the snap ring, a direct external force is applied to the snap ring, forcing it to deform away from the block, freeing it from the block.

[0026] Preferably, a spring is provided between the telescopic slot and the driving block with both ends fixedly connected to the two. When the spring is in an initial state, the driving block partially extends out of the telescopic slot.

[0027] With the above solution, when the external force drives the drive block seal to retract, the spring is squeezed and deformed to generate elastic force. When the external force on the drive block disappears, the elastic force of the spring drives the drive block to partially extend out of the telescopic slot and reset.

[0028] Due to the adoption of the above technical solutions, the utility model has significant technical effects: the locking structure limits the loosening of the conductive busbar and the conductive column, and the anti-loosening structure limits the loosening of the mounting seat and the shell, thereby ensuring the stable electrical connection of the connector; at the same time, the protective cover is opened for installing the locking structure, and when closed, the locking structure is sealed to avoid exposure of the high-voltage connection, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of a high-voltage metal busbar connector in Example 1;

[0030] Figure 2 This is a schematic diagram of a high-voltage metal busbar connector in Example 1 with the protective cover opened;

[0031] Figure 3 is a top view of a high-voltage metal busbar connector in Example 1;

[0032] Figure 4 yes Figure 3 The sectional view at AA in FIG;

[0033] Figure 5 yes Figure 4 Enlarged view of point B in FIG.

[0034] Figure 6 This is a partial enlarged view of a high-voltage metal busbar connector in Example 1 when the annular airbag is not expanded;

[0035] Figure 7 This is a schematic diagram of a high-voltage metal bus connector in Example 1 when the plug and the socket are not plugged in;

[0036] Figure 8 This is a disassembled diagram of a high-voltage metal busbar connector in Example 1;

[0037] Figure 9 yes Figure 8 Enlarged view of point C in the middle;

[0038] Figure 10 This is a partial enlarged view of a high-voltage metal bus connector in Example 2 when the sealing structure is the third sealing ring.

[0039] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. socket; 101. mounting seat; 102. conductive column; 2. plug; 201. shell; 202. conductive busbar; 203. fixing bolt; 3. locking bolt; 4. protective cover; 5. first sealing ring; 6. locking insert nut; 7. locking seat; 8. locking bolt; 9. anti-slip insert nut; 10. fixing seat; 11. anti-slip bolt; 12. second sealing ring; 13. pressure ring; 14. through groove; 15. annular airbag; 16. cover body; 17. drive block; 18. telescopic slot; 19. spring; 20. clamping block; 2001. introduction slope; 21. clamping ring; 2101, matching slope; 22. third sealing ring. DETAILED DESCRIPTION

[0040] The present invention is described in further detail below with reference to the accompanying drawings and embodiments.

[0041] Example 1

[0042] A high voltage metal busbar connector, refer to Figures 1 to 9, comprising a plug 2 and a socket 1 that can be sealed and plugged together. The socket 1 includes a mounting base 101 and a conductive post 102 mounted on the mounting base 101. The plug 2 includes a vertically extending housing 201. A through slot 14 is provided on the side wall of the housing 201. One end of a conductive busbar 202 passes through the through slot 14 and is positioned within the housing 201. The busbar 202 is fixed to the housing 201 by a fixing bolt 203. In this embodiment, two sets of conductive busbars 202, through slots 14, and fixing bolts 203 are provided. The conductive busbars 202 are made of copper or aluminum.

[0043] The connector further includes a locking bolt 3 , one end of which passes through the conductive busbar 202 and is threadedly engaged with the conductive post 102 , thereby achieving a fixed connection between the conductive busbar 202 and the conductive post 102 and preventing the two from becoming loose.

[0044] A protective cover 4 is hingedly mounted on the upper end surface of the housing 201, away from the mounting base 101. When the socket 1 and plug 2 are connected, the protective cover 4 flips upward to open the housing 201, revealing the conductive busbar 202 fixedly connected therein. The locking bolts 3 pass through the conductive busbar 202 and then threadably engage the conductive posts 102. After the locking bolts 3 secure the conductive busbar 202 and conductive posts 102, the protective cover 4 flips downward to seal the housing 201, shielding the high-voltage connection between the conductive busbar 202 and the conductive posts 102, preventing direct contact and improving safety.

[0045] A locking insert nut 6 is fixedly provided on the shell 201, and a locking seat 7 is fixedly provided on the protective cover 4. One end of the locking bolt 8 passes through the locking seat 7 on the protective cover 4 and is threadably matched with the locking insert nut 6 on the shell 201, thereby realizing a fixed connection between the locking seat 7 and the locking insert nut 6, that is, a fixed connection between the protective cover 4 and the shell 201, preventing the protective cover 4 from flipping upward relative to the shell 201, thereby further improving safety.

[0046] An anti-slip insert nut 9 is fixedly provided on the mounting seat 101, and a fixing seat 10 is fixedly provided on the outside of the shell 201. One end of the anti-slip bolt 11 passes through the fixing seat 10 on the shell 201 and is threadedly matched with the anti-slip insert nut 9 on the mounting seat 101, thereby realizing a fixed connection between the fixing seat 10 and the anti-slip insert nut 9, that is, a fixed connection between the shell 201 and the mounting seat 101, to prevent the two from loosening.

[0047] A second sealing ring 12 and a pressure plate are mounted on the side of the housing 201 near the mounting base 101 to prevent the second sealing ring 12 from separating from the housing 201. The pressure plate is fixed to the housing 201. When the mounting base 101 and the housing 201 are plugged together, the second sealing ring 12 forms a seal between them. A first sealing ring 5 is embedded in the upper end surface of the housing 201, facing away from the mounting base 101. When the protective cover 4 is closed on the housing 201, the first sealing ring 5 forms a seal between the two.

[0048] An annular airbag 15 is fixedly mounted on the inner wall of the through-slot 14. Initially, the airbag 15 contracts and is absorbed and accommodated on the inner wall of the through-slot 14. As the conductive busbar 202 passes through the through-slot 14, it does not contact the busbar 202, creating no resistance to its movement. This ensures that the busbar 202 smoothly passes through the through-slot 14 and is secured within the housing 201. The airbag 15 then expands until it elastically contacts the outer surface of the busbar 202, achieving a seal. The expansion and contraction of the airbag 15 is controlled by a drive mechanism.

[0049] The driving structure includes a cover body 16 that is sleeved on the conductive busbar 202 and can move closer to or away from the shell 201. A telescopic groove 18 that is connected to the interior of the annular airbag 15 is recessed on the side of the shell 201 close to the cover body 16. A driving block 17 is sealed and elastically extended in the telescopic groove 18 along the moving direction of the cover body 16. A spring 19 is provided between the telescopic groove 18 and the driving block 17 with both ends fixedly connected to the two. When the spring 19 is in the initial state, the driving block 17 partially extends out of the telescopic groove 18 and partially extends out of the shell 201.

[0050] A snap-fit structure is provided between the cover 16 and the housing 201. When the annular airbag 15 is inflated, the cover 16 and the housing 201 engage to prevent the cover 16 from separating from the housing 201, thereby maintaining the inflated state of the annular airbag 15. The snap-fit structure includes a protruding block 20 on the housing 201 and a snap ring 21 provided on the cover 16 that can squeeze and slide with the block 20 and then pass over the block 20 to snap onto the block 20.

[0051] An inlet slope 2001 is provided on the side of the block 20 close to the cover body 16, which gradually tilts from close to the shell 201 to away from the shell 201 away from the cover body 16. A matching slope 2101 is provided on the side of the snap ring 21 close to the block 20, which is squeezed and slidably matched with the inlet slope 2001 to drive the snap ring 21 to deform.

[0052] During assembly, the protective cover 4 is opened, and one end of the conductive busbar 202 is inserted into the housing 201 through the through slot 14 and secured to the housing 201 via the fixing bolts 203. External force is applied to the cover 16, driving it toward the housing 201, forcing the drive block 17 to retract and seal, squeezing the air in the telescopic slot 18 into the annular airbag 15. The annular airbag 15 then inflates until it abuts against the outer annular wall of the conductive busbar 202, achieving a seal. At this point, the mating bevel 2101 on the snap ring 21 and the guide bevel 2001 on the clamping block 20 squeeze and slide together, driving the snap ring 21 past the clamping block 20 and then locking onto it, limiting the cover 16 from moving away from the housing 201 and ensuring the expansion of the annular airbag 15.

[0053] Plug the mounting base 101 into the housing 201, and one end of the locking bolt 3 passes through the conductive busbar 202 and is threadedly matched with the conductive column 102 to achieve a fixed connection between the conductive busbar 202 and the conductive column 102, preventing the two from loosening. The protective cover 4 is flipped down to cover, and one end of the locking bolt 8 passes through the locking seat 7 on the protective cover 4 and is threadedly matched with the locking insert nut 6 on the housing 201 to achieve a fixed connection between the protective cover 4 and the housing 201, preventing the protective cover 4 from flipping upward relative to the housing 201. At this time, the housing 201 and the protective cover 4 are sealed by the first sealing ring 5. One end of the anti-slip bolt 11 passes through the fixing seat 10 on the housing 201 and is threadedly matched with the anti-slip insert nut 9 on the mounting base 101 to achieve a fixed connection between the housing 201 and the mounting base 101, preventing the two from loosening. At this time, the mounting base 101 and the housing 201 are sealed by the second sealing ring 12.

[0054] Example 2

[0055] Compared with Example 1, Figure 10 The difference between this embodiment and the embodiment is that the annular airbag 15 is not provided in the through-slot 14, and the telescopic slot 18, drive block 17, and spring 19 are not provided on the housing 201. A third sealing ring 22 is fixedly installed in the through-slot 14. After the conductive busbar 202 passes through the third sealing ring 22, the third sealing ring 22 seals the conductive busbar 202 and the through-slot 14.

[0056] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A high-voltage metal busbar connector, comprising a plug (2), a socket (1), and an anti-detachment structure disposed between the plug and the socket to prevent the plug and the socket from detaching after the plug and the socket are sealed and plugged together, characterized in that: The socket (1) comprises a mounting seat (101) and a conductive post (102) arranged on the mounting seat (101); the plug (2) comprises a housing (201) and a conductive busbar (202) fixedly arranged in the housing (201) and having one end sealedly extending out of the housing (201); a locking structure for maintaining contact between the conductive busbar (202) and the conductive post (102); a protective cover (4) for opening or sealing the housing (201) is hingedly provided on a side of the housing (201) away from the mounting seat (101); and a locking structure for limiting the rotation of the protective cover (4) when the protective cover (4) seals and closes the housing (201) is provided between the protective cover (4) and the housing (201).

2. The high-voltage metal bus connector according to claim 1, characterized in that: The locking structure includes a locking bolt (3) whose one end passes through the conductive busbar (202) and is thread-tightly matched with the conductive column (102) to prevent the conductive busbar (202) and the conductive column (102) from loosening.

3. The high-voltage metal bus connector according to claim 1, characterized in that: The locking structure comprises a locking bolt (8) having one end passing through the protective cover (4) and then being thread-fitted with the housing (201) to achieve a fixed connection between the protective cover (4) and the housing (201).

4. The high-voltage metal bus connector according to claim 1, characterized in that: The anti-slip structure comprises an anti-slip bolt (11) having one end passing through the housing (201) and then being thread-fitted with the mounting seat (101) to achieve a fixed connection between the housing (201) and the mounting seat (101).

5. The high-voltage metal bus connector according to claim 1, characterized in that: The housing (201) is provided with a through slot (14) for the conductive busbar (202) to pass through, and a sealing structure is provided between the through slot (14) and the conductive busbar (202) to seal the two.

6. The high-voltage metal bus connector according to claim 5, characterized in that: The sealing structure includes a third sealing ring (22) arranged in the through groove (14) and in sealing contact with the outer surface of the conductive busbar (202).

7. The high-voltage metal bus connector according to claim 5, characterized in that: The sealing structure comprises an annular airbag (15) fixedly arranged on the inner wall of the through groove (14) and capable of expanding to seal against the outer annular wall of the conductive busbar (202) or contracting to separate from the conductive busbar (202), and a driving structure arranged on the housing (201) for driving the annular airbag (15) to expand or contract.

8. The high-voltage metal bus connector according to claim 7, characterized in that: The driving structure comprises a cover (16) sleeved on a conductive busbar (202) and movable toward or away from a housing (201), a telescopic groove (18) recessed on the housing (201) and communicating with the annular airbag (15), and a driving block (17) sealed and elastically telescopically arranged in the telescopic groove (18) along the moving direction of the cover (16), partially extending out of the housing (201) under normal conditions to shrink the annular airbag (15), and sealingly retracting when the cover (16) moves toward the housing (201) to expand the annular airbag (15). A clamping structure is provided between the cover (16) and the housing (201) to limit the cover (16) from being separated from the housing (201) when the annular airbag (15) expands.

9. The high-voltage metal bus connector according to claim 8, characterized in that: The clamping structure comprises a clamping block (20) protruding from the shell (201) and a clamping ring (21) provided on the cover (16) and capable of being squeezed and slidably matched with the clamping block (20) and then passing over the clamping block (20) to be clamped on the clamping block (20); a side of the clamping block (20) close to the cover (16) is provided with an introduction inclined surface (2001) which gradually tilts from close to the shell (201) to away from the shell (201) in a direction away from the cover (16); and a side of the clamping ring (21) close to the clamping block (20) is provided with a matching inclined surface (2101) which matches with the introduction inclined surface (2001) to drive the clamping ring (21) to deform.

10. The high-voltage metal bus connector according to claim 8, characterized in that: A spring (19) is provided between the telescopic slot (18) and the driving block (17), with both ends fixedly connected to the two. When the spring (19) is in an initial state, the driving block (17) partially extends out of the telescopic slot (18).

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