A stable and reliable connector with TPA structure

Abstract

This utility model discloses a stable and reliable connector with a TPA structure, including a plug, a plug housing, a plug shield housing and a plug inner housing arranged sequentially inside the plug housing, power springs in the holes at both ends of the plug inner housing, and an interlocking spring in the center hole of the plug inner housing; a CPA is provided on the top of the plug housing, and the CPA is slidably limited to the plug housing. When the front end of the plug is inserted into the rear end of the socket, the socket housing hook of the socket housing pushes up the CPA hook, pushing the CPA to lock the connection between the plug and the socket. This utility model is applicable to the field of wire harness connector technology. The TPA can reduce the risk of incorrect operation and damage during connector insertion and removal, ensure correct alignment and full insertion of terminals, thereby improving the reliability of electrical connection; by providing additional contact pressure and mechanical support, the TPA can enhance the durability and stability of the connector; assembly is simpler, and the correctness of the connection can be quickly confirmed, improving production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of wire harness connector technology, specifically a stable and reliable connector with a TPA structure. Background Technology

[0002] Wire harness connectors are a type of terminal block, also known as plugs or sockets, consisting of a plug and a socket. Connectors act as relays in circuits for wire harnesses; connections between wire harnesses and between wire harnesses and electrical components generally utilize connectors. Wire harness connectors are widely used in automobiles, home appliances, instruments, office equipment, commercial machines, electronic component leads, and electronic control boards. Wire harness connectors are crucial components connecting various electrical and electronic devices. To prevent connectors from detaching inside the mechanical device containing the wire harness, all connectors employ locking devices. Furthermore, when wire harnesses are installed inside mechanical equipment, cable ties are often used to secure the connectors to the internal trusses or beams of the equipment to limit the wire harness's movement within the device.

[0003] In existing connectors, the tail caps generally adopt an integral structure. The assembly of integral tail caps is troublesome. All cables need to be organized before assembling the tail cap, which takes a lot of time. In addition, the fixed structure of the integral tail cap makes the cables on both sides easily torn and deformed when bent. Furthermore, during the use of existing connectors, it is not possible to ensure that the terminals are correctly aligned and fully inserted when the connector is plugged in or unplugged, which can easily lead to incorrect operation and damage risks. Moreover, the shielding shells of existing connectors mostly adopt a straight cylindrical shielding shell structure, which is not stable enough and is easily loosened by vibration or impact, resulting in a mediocre shielding effect. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a stable and reliable connector with a TPA structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A stable and reliable connector with a TPA structure includes a plug, the plug including a plug housing, a plug shielding shell and a plug inner shell arranged sequentially inside the plug housing, power springs provided in the holes at both ends of the plug inner shell, and an interlocking spring provided in the center hole of the plug inner shell; The plug housing is provided with a CPA on the top. The CPA is slidably limited to the plug housing. When the front end of the plug is inserted into the rear end of the socket, the socket housing hook of the socket housing pushes up the CPA hook, pushing the CPA to realize the connection and locking of the plug and the socket.

[0006] Preferably, the CPA has CPA outer ribs at both ends of its bottom, and the plug housing has plug housing bosses at both ends of its top groove bottom. The CPA outer ribs are slidably connected to their corresponding plug housing bosses. Three sliding ribs are arranged parallel between the two plug housing bosses. Two CPA guide blocks are arranged between the two CPA outer ribs. The two CPA guide blocks are slidably engaged between adjacent sliding ribs. CPA hooks are located on the front side of the CPA. CPA limiting buckles are provided between the CPA guide blocks and their adjacent CPA outer ribs. CPA limiting bosses are provided between the two CPA guide blocks. Plug housing buckles are provided on both outer sliding ribs. Plug housing limiting ribs are provided on the central sliding rib. Plug housing limiting blocks are provided inside the plug housing.

[0007] Preferably, in the state before CPA is pushed in, the plug housing latch blocks against the CPA limit latch, restricting the position of CPA and preventing it from retracting. At this time, the plug housing limit block blocks against the CPA hook, preventing CPA from being pushed in.

[0008] Preferably, when the socket and plug are assembled and plugged in, the socket housing hook on the socket housing lifts the CPA hook, causing the plug housing latch to engage with the socket housing hook, forming a primary lock. The socket housing latch presses down the plug housing limiting end block. After insertion, the socket housing latch and the plug housing limiting end block cooperate to form a secondary lock. At the same time, the CPA limiting step presses against the rear end face of the socket housing, preventing the CPA from being pushed in further. The CPA hook and CPA limiting protrusion cooperate with the outer end of the plug housing limiting block and the plug housing limiting rib, respectively, making it difficult for the CPA to be pushed out. Simultaneously, the CPA protrusion cooperates with the end face of the plug housing pressure block, preventing the plug housing pressure block from being pressed down and the connector from being opened. Only by pressing down the CPA and backing it to its previous position before pushing it in, and pressing down the plug housing protrusion, can the primary lock of the connector be opened. Pressing down the plug housing spring clip causes the socket housing latch and the plug housing limiting end block to misalign, thus unlocking the secondary lock and opening the connector.

[0009] Preferably, the power spring includes a power spring limiting spring and a power spring limiting step. The power spring limiting spring and the power spring limiting step are respectively limited and engaged with the plug inner shell limiting step and the plug inner shell limiting spring. The plug inner shell limiting step and the plug inner shell limiting spring are engaged on all four sides to prevent the power spring plug terminal from coming out. The power spring bubble point makes the contact more stable after the power pin insertion section is inserted.

[0010] Preferably, when the inner shell of the plug is inserted into the inner shell of the plug, the anti-retraction hole of the plug shielding shell cooperates with the anti-retraction step of the inner shell of the plug to prevent the inner shell from being pulled out of the shielding shell; the side of the socket shielding shell cooperates with the front limiting step of the socket outer shell to prevent the socket shielding shell from being inserted further; at the same time, the spring piece of the socket shielding shell cooperates with the rear limiting step of the socket outer shell to prevent the socket shielding shell from being pulled out of the assembly position; the folded edge of the socket shielding shell cooperates with the limiting groove of the socket outer shell to prevent the socket shielding shell from deforming along the tear. The plug shielding shell limiting spring, the plug inner shell limiting spring, and the plug outer shell rear limiting step cooperate to prevent the shielding shell assembly from coming out. The plug shielding shell rear ring spring and the shielding outer ring make contact and conduction. The shielding outer ring and the shielding inner ring achieve wire harness shielding conduction by clamping the wire harness shielding layer. The plug shielding shell limiting spring and the plug shielding shell front anti-reverse hole cooperate with the outer end face of the socket shielding shell to make the plug and socket shielding shells conduction, thus realizing the connection between connector shielding and wire harness shielding to form complete electromagnetic shielding.

[0011] Preferably, during assembly, the protruding edge of the interlocking spring is flush with the limiting boss of the plug inner shell, restricting the further insertion of the interlocking spring. The outer bubble of the interlocking spring mates with the plug inner shell, and the spring contact of the interlocking spring mates with the surface of the plug inner shell, fixing the spring in its position inside the inner shell. At the same time, the spring contact of the interlocking spring mates with the limiting plate of the plug inner shell, ensuring that the spring will not come out after assembly. The inner bubble of the interlocking spring makes interference contact with the insertion section of the interlocking pin, increasing conductivity. The spring contact of the power pin mates with the limiting plate of the socket outer shell, preventing the power pin from coming out. The interlock pins pass through the two TPA through holes in the middle of the TPA. The insertion section of the interlock pins is in contact with the inner bubble point of the interlock spring to form a low-voltage circuit. When the connector is opened unexpectedly, the power pins and the interlock pins are pulled out together. When the insertion section of the pins exceeds the inner bubble point of the interlock spring, the insertion section of the power pins has not yet left the inner bubble point of the power spring, thus avoiding risks.

[0012] Preferably, before the power pins and interlock pins are assembled, the TPA spring contacts engage with the outer snap-fit ​​of the socket housing to form a pre-assembly; after the power pins and interlock pins are inserted, the TPA spring contacts engage with the inner snap-fit ​​of the socket housing to prevent the wiring harness from shaking.

[0013] Preferably, the inner side of the rear end of the plug housing is provided with a wire harness sealing ring, which is fixed by the rear cover.

[0014] Preferably, the back cover is provided with back cover limiting grooves on both sides, and the plug housing is provided with plug housing limiting posts on both sides of the rear end. The plug housing limiting posts are engaged in their corresponding back cover limiting grooves, so as to realize the interlocking structure of universal parts by symmetrically engaging the back cover product. By matching the back cover notch with the back cover rib, the universal parts are interlocked and combined into a complete structure.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: In this utility model, the connector plug back cover structure adopts a symmetrical snap-fit ​​assembly, which can realize the interlocking of universal parts and combine the two parts into a complete structure. Compared with the traditional one-piece tail cover, it saves more assembly time and allows the cable to be assembled in steps without having to assemble the tail cover together after all parts are arranged. At the same time, the split tail cover has a stronger lateral connection structure through the interlocking structure compared with the traditional one-piece tail cover, making it less prone to deformation when bending the cable after the cable is assembled.

[0016] In this invention, the connector TPA improves connection reliability. The TPA reduces the risk of errors and damage during connector insertion and removal, ensuring correct terminal alignment and full insertion, thereby enhancing the reliability of the electrical connection. Simultaneously, it enhances mechanical stability; by providing additional contact pressure and mechanical support, the TPA strengthens the connector's durability and stability in harsh environments. Furthermore, it simplifies the assembly process; the TPA's design makes connector assembly easier and allows for quick verification of correct connection, improving production efficiency.

[0017] In this invention, the contacts on the socket shielding shell improve electromagnetic compatibility; more contact points achieve better shielding, reduce electromagnetic noise radiation, and provide a good grounding path for the shielding layer current, enhancing electrical performance. Increasing the number of contact points reduces contact resistance, improving the overall electrical performance of the connector. It also improves mechanical stability, reduces the risk of loosening due to vibration or impact, and extends service life. Furthermore, it improves shielding effectiveness; the multi-point flexible contact design eliminates the need for additional welding or screws, simplifying installation, reducing costs, and minimizing the electromagnetic interference range. Attached Figure Description

[0018] Figure 1 This is an exploded view of the plug of this utility model; Figure 2 This is a top view of the plug of this utility model; Figure 3 This is a bottom view of the plug of this utility model; Figure 4 This is an exploded view of the socket of this utility model; Figure 5 This is a cross-sectional view of the plug and socket connection of this utility model; Figure 6 This is a vertical sectional view of the plug and socket connection of this utility model; Figure 7 This is a cross-sectional view of the CPA insertion front plug of this utility model; Figure 8 This is a cross-sectional view of the CPA plug after insertion according to this utility model; Figure 9 This is a sectional view of the TPA insertion socket of this utility model; Figure 10This is a cross-sectional view of the TPA socket after insertion according to this utility model; Figure 11 This is a schematic diagram of the buckle connection process between the plug housing limiting end block and the socket housing of this utility model.

[0019] Attached reference numerals: 1. Back cover; 1-3. Back cover notch; 1-4. Back cover rib; 2. Wiring harness sealing ring; 3. Inner shielding ring; 4. Outer shielding ring; 5. Power spring; 5-1. Power spring limiting spring; 5-2. Power spring limiting step; 5-3. Power spring bubble point; 6. CPA; 6-1. CPA outer rib; 6-2. CPA limiting buckle; 6-3. CPA hook; 6-4. CPA limiting step; 6-5. CPA limiting boss; 6-6. CPA boss; 7. Plug housing; 7-3. Plug housing boss; 7-4. Plug housing buckle; 7-5. Plug 7-6. Outer shell limiting block; 7-7. Plug outer shell limiting end block; 7-8. Plug outer shell limiting rib; 7-9. Plug outer shell pressing block end face; 7-10. Plug outer shell spring piece; 7-11. Plug outer shell rear limiting step; 8. Plug shield shell; 8-1. Plug shield shell anti-reverse hole; 8-2. Plug shield shell limiting spring piece; 8-3. Plug shield shell rear ring spring piece; 8-5. Plug shield shell front anti-reverse hole; 9. Plug inner shell; 9-1. Plug inner shell limiting step; 9-2. No. 1 plug inner shell limiting spring piece; 9-3. Plug inner shell anti-reverse step; 9-4. No. 2 plug 9-5. Inner shell limiting spring; 9-7. Plug inner shell limiting boss; 9-8. Plug inner shell surface; 9-9. Plug inner shell limiting latch; 10. Interlocking spring; 10-1. Interlocking spring protrusion; 10-2. Interlocking spring bubble; 10-3. Interlocking spring spring; 10-4. Interlocking spring inner bubble; 11. Plug sealing ring; 12. TPA; 12-1. TPA spring; 13. Interlocking pin; 13-1. Interlocking pin insertion section; 14. Power pin; 14-1. Power pin spring; 14-2. Power pin insertion section; 15. Socket sealing ring; 16. Socket outer shell; 16- 1. Socket housing hook; 16-2. Rear end face of socket housing; 16-3. Socket housing buckle; 16-4. Front limiting step of socket housing; 16-5. Rear limiting step of socket housing; 16-6. Limiting groove of socket housing; 16-7. Limiting platform of socket housing; 16-8. Outer buckle of socket housing; 16-9. Inner buckle of socket housing; 17. Socket shielding shell; 17-1. Outer end face of socket shielding shell; 17-2. Side of socket shielding shell; 17-3. Socket shielding shell spring piece; 17-4. Folded edge of socket shielding shell; 17-5. Tear opening of socket shielding shell; 18. Bushing. Detailed Implementation

[0020] The specific embodiments of this utility model are described in detail below.

[0021] The "range" disclosed in this utility model is defined by a lower limit and an upper limit. A given range is defined by selecting a lower limit and an upper limit, which define the boundaries of a particular range. Ranges defined in this way can include or exclude endpoints and can be arbitrarily combined; that is, any lower limit can be combined with any upper limit to form a range. For example, if a range of 10–50 is listed for a specific parameter, it is also expected that ranges of 10–40 and 20–50 are also included. Furthermore, if the minimum range values ​​are listed as 1 and 2, and the maximum range values ​​are listed as 3, 4, and 5, then the following ranges are all expected: 1–3, 1–4, 1–5, 2–3, 2–4, and 2–5. In this application, unless otherwise stated, the numerical range "a–b" represents a shortened representation of any combination of real numbers between a and b, where a and b are real numbers. For example, the numerical range "0–5" means that all real numbers between "0–5" have been listed herein; "0–5" is merely a shortened representation of these numerical combinations.

[0022] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0023] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0024] Unless otherwise specified, all steps in this application may be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), indicating that the method may include steps (a) and (b) performed sequentially, or it may include steps (b) and (a) performed sequentially. For example, the mention that the method may also include step (c) indicates that step (c) may be added to the method in any order. For example, the method may include steps (a), (b), and (c), or it may include steps (a), (c), and (b), or it may include steps (c), (a), and (b), etc.

[0025] Unless otherwise specified, the terms "comprising" and "including" as used in this application can be open-ended or closed-ended. For example, "comprising" and "including" can mean that other components not listed may also be included, or that only the listed components may be included.

[0026] Unless otherwise specified, the reaction will proceed under normal temperature and pressure conditions.

[0027] Unless otherwise specified, all parts or percentages are by weight or by weight percentage.

[0028] In this invention, all the substances used are known substances that can be purchased or synthesized by known methods.

[0029] In this invention, all the devices or equipment used are conventional devices or equipment known in the art and are readily available.

[0030] The following embodiments further illustrate specific implementations of a stable and reliable connector with a TPA structure according to the present invention. The stable and reliable connector with a TPA structure according to the present invention is not limited to the descriptions in the following embodiments.

[0031] Example 1: A stable and reliable connector with a TPA structure, such as Figure 1-11 As shown, it includes: Back cover 1: There are two back covers 1, which adopt a split structure. Both sides of the back cover 1 are provided with back cover limiting grooves. Both sides of the rear end of the plug housing 7 are provided with plug housing limiting posts. The plug housing limiting posts are engaged in their corresponding back cover limiting grooves. The two back covers 1 are symmetrically arranged. The inner side of the back cover 1 is provided with an L-shaped back cover notch 1-3 and a back cover rib 1-4. The back cover notch 1-3 of the back cover 1 is engaged with the back cover rib 1-4 of the other back cover 1. By matching the back cover notch 1-3 and the back cover rib 1-4, the universal parts are interlocked and combined into a complete structure. The function is to achieve a stronger connection structure while allowing the two cables to be assembled separately, so that the cables are not easily deformed when bent after assembly.

[0032] Power spring 5: The power spring limiting spring 5-1 and the power spring limiting step 5-2 respectively cooperate with the plug inner shell limiting step 9-1 and the plug inner shell limiting spring 9-2. The plug inner shell limiting step 9-1 is a latch for the mating terminal, and the plug inner shell limiting spring 9-2 is a latch for fixing the terminal shell. The two latching structures are engaged in four positions on four sides to prevent the plug terminal from coming out. The power spring bubble 5-3 makes the contact tighter after the power pin insertion section 14-2 is inserted.

[0033] CPA6: CPA6, through the cooperation of the two side ribs 6-1 and the plug housing boss 7-3, achieves two states: pre-installation before insertion and post-insertion. In the pre-insertion state, the plug housing latch 7-4 presses against the CPA limiting latch 6-2, restricting the position of CPA and preventing it from retracting. At this time, the plug housing limiting block 7-5 presses against the CPA hook 6-3, preventing CPA from being pushed in. When the socket and plug are assembled and plugged in, the socket housing hook 16-1 of the socket housing 16 will push up the CPA hook 6-3, causing the plug housing latch 7-4 to fit with the socket housing hook 16-1, forming a primary lock. The socket housing latch 16-3 presses down the plug housing limiting end block 7-6. After insertion, the socket housing latch 16-3 and the plug housing limiting end block 7-6 cooperate to form a secondary lock. Simultaneously, the CPA limiting step 6-4 presses against the rear end face 16-2 of the socket housing, preventing CPA6 from being pushed further in. The CPA hook 6-3 and the CPA limiting boss 6-5 engage with the outer end of the plug housing limiting block 7-5 and the plug housing limiting rib 7-7, respectively, making it difficult for CPA to be pushed out. At the same time, the CPA boss 6-6 engages with the end face 7-8 of the plug housing pressure block, preventing the plug housing pressure block 7-9 from being pressed down and thus preventing the connector from opening. Only by pressing CPA6 down and retracting it to its original position before pushing it in, and then pressing down the plug housing boss 7-3, can the primary lock of the connector be opened. Pressing down the plug housing spring piece 7-10 causes the socket housing latch 16-3 to misalign with the plug housing limiting end block 7-6, thus unlocking the secondary lock and opening the connector.

[0034] Furthermore, the rear end of the plug housing pressure block 7-9 is connected to the side wall of the plug housing 7, and the front end of the plug housing pressure block 7-9 is a suspended elastic structure. Before CPA6 is inserted, the end face 7-8 of the plug housing pressure block is separated from the CPA boss 6-6. At this time, the plug housing pressure block 7-9 can be pressed until the end face 7-8 of the plug housing pressure block contacts the top of CPA6. When CPA6 is inserted, the CPA boss 6-6 presses against the end face 7-8 of the plug housing pressure block, and the plug housing pressure block 7-9 cannot be pressed down.

[0035] Furthermore, the two plug housing limiting end blocks 7-6 are respectively provided with the two ends of the plug housing spring pieces 7-10, and the top of the socket housing 7 is symmetrically provided with two guide rails. The two socket housing buckles 16-3 are respectively provided on the inner side of the two guide rails. During installation, the two plug housing limiting end blocks 7-6 slide along the inner side of the two guide rails until they contact the socket housing buckles 16-3. The contact surfaces of the plug housing limiting end blocks 7-6 and the socket housing buckles 16-3 adopt an arc-shaped inclined structure. As the socket housing buckles 16-3 move, they press down the two plug housing limiting end blocks 7-6 and drive the plug housing spring pieces 7-10 to press down until the socket housing buckles 16-3 slide past the plug housing limiting end blocks 7-6. The limiting end blocks 7-6 spring back, and the socket housing buckles 16-3 and the plug housing limiting end blocks 7-6 cooperate to form a secondary lock.

[0036] Press down the plug housing spring 7-10, and the plug housing limiting end block 7-6 will press down accordingly. At this time, the upper end of the plug housing limiting end block 7-6 is lower than the lower end of the socket housing latch 16-3, and the socket housing latch 16-3 can be released.

[0037] Plug shield 8: When the plug inner shell 9 is inserted into the plug shield 8, the plug shield anti-retraction hole 8-1 and the plug inner shell anti-retraction step 9-3 cooperate to prevent the inner shell from exiting the shield. The plug shield limiting spring 8-2 and the second plug inner shell limiting spring 9-4 cooperate with the plug outer shell rear limiting step 7-11 to prevent the shield assembly from exiting. The plug shield rear ring spring 8-3 and the shield outer ring 4 are in contact and conductive. The shield outer ring 4 and the shield inner ring 3 achieve wire harness shielding conductivity by clamping the wire harness shielding layer. The plug shield limiting spring 8-2 and the plug shield front anti-retraction hole 8-5 cooperate with the socket shield outer end face 17-1 to make the plug 8 and the socket shield 17 conductive, thus realizing the complete electromagnetic shielding of the connector shield and the wire harness shield.

[0038] Interlocking spring 10: During assembly, the protruding edge 10-1 of the interlocking spring is flush with the limiting boss 9-5 of the inner shell of the plug, restricting the spring from being inserted further. The outer bubble point 10-2 of the interlocking spring mates with the inner shell 9 of the plug, and the spring contact 10-3 of the interlocking spring mates with the inner shell surface 9-7 of the plug, fixing the spring in the position inside the inner shell. At the same time, the spring contact 10-3 of the interlocking spring mates with the limiting plate 9-8 of the inner shell of the plug, so that the spring will not come out after assembly. The inner bubble point 10-4 of the interlocking spring makes interference contact with the insertion section 13-1 of the interlocking pin, increasing conductivity.

[0039] Socket shield 17: The side 17-2 of the socket shield 17 engages with the front limiting step 16-4 of the socket housing to prevent the socket shield 17 from being inserted further; at the same time, the socket shield spring 17-3 engages with the rear limiting step 16-5 of the socket housing to prevent the socket shield 17 from exiting the assembly position; the socket shield folded edge 17-4 engages with the limiting groove 16-6 of the socket housing to prevent the socket shield 17 from deforming along the tear 17-5.

[0040] Power pin 14: After assembly, the power pin spring 14-1 engages with the socket housing limiting plate 16-7 to prevent the power pin from coming out.

[0041] Interlocking pin 13: Interlocking pin 13 passes through the two TPA through holes in the middle of TPA12. The insertion section 13-1 of the interlocking pin is in contact with the inner bubble point 10-4 of the interlocking spring to form a low-voltage circuit. When the connector is opened unexpectedly, the power pin 14 and the interlocking pin 13 are pulled out together. When the insertion section 13-1 of the pin exceeds the inner bubble point 10-4 of the interlocking spring, the insertion section 14-2 of the power pin has not yet left the inner bubble point 5-3 of the power spring to avoid risks.

[0042] TPA12: Before the interlocking pin 13 and power pin 14 are assembled, the TPA spring 12-1 engages with the outer snap-fit ​​16-8 of the socket housing to form a pre-assembly. After the interlocking pin 13 and power pin 14 are inserted, the TPA spring 12-1 engages with the inner snap-fit ​​16-9 of the socket housing to prevent the wiring harness from shaking.

[0043] Furthermore, the outer buckle 16-8 and the inner buckle 16-9 of the socket housing are sequentially arranged from the outside to the inside at the top of the rear end of the socket housing 16. Both the outer buckle 16-8 and the inner buckle 16-9 of the socket housing adopt a structure in which the height gradually increases from the outside to the inside, which is convenient to lift the TPA spring 12-1 during installation and can be locked and fixed with the TPA spring 12-1 after installation.

[0044] The front end of the socket housing 16 is provided with multiple bushings 18 for connecting electrical wires.

[0045] By adopting the above technical solution: 1. The connector plug and rear cover 1 have a symmetrical snap-fit ​​structure that allows for interlocking of common components, combining the two parts into a complete structure. Compared to traditional one-piece tail covers, this design saves assembly time, allowing for step-by-step cable assembly without the need to assemble the entire cable before assembling the tail cover. Furthermore, this split-type tail cover, through its interlocking structure, provides a stronger lateral connection, making it less prone to deformation when bending the cable after assembly.

[0046] 2. This connector's TPA improves connection reliability. The TPA reduces the risk of errors and damage during connector mating and unmating, ensuring correct terminal alignment and full insertion, thereby enhancing electrical connection reliability. It also enhances mechanical stability; by providing additional contact pressure and mechanical support, the TPA strengthens the connector's durability and stability in harsh environments. Furthermore, it simplifies the assembly process; the TPA's design makes connector assembly easier and allows for quick verification of correct connection, improving production efficiency.

[0047] 3. The contacts on the socket shielding shell 17 enhance electromagnetic compatibility. More contact points achieve better shielding, reduce electromagnetic noise radiation, and provide a good grounding path for the shielding layer current. Enhanced electrical performance: increased contact points reduce contact resistance and improve the overall electrical performance of the connector. Improved mechanical stability: reduces the risk of loosening due to vibration or impact, extending service life. Improved shielding effect: the multi-point flexible contact design eliminates the need for additional soldering or screws, simplifying installation, reducing costs, and minimizing electromagnetic interference range.

[0048] 4. Existing products on the market typically only fit 2.5mm. 2 and 4mm2 The cable used in this application represents a breakthrough in design, not only being fully compatible with 2.5mm cables. 2 and 4mm 2 The cable also supports 6mm adapters. 2 The cables are designed to meet more diverse usage needs, bringing users greater applicability and convenience.

[0049] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A stable and reliable connector with a TPA structure, characterized in that, The plug includes a plug housing (7), a plug shield (8) and a plug inner housing (9) are provided in sequence inside the plug housing (7), power springs (5) are provided in the holes at both ends of the plug inner housing (9), and an interlocking spring (10) is provided in the center hole of the plug inner housing (9). The plug housing (7) is provided with a CPA (6) on the top. The CPA (6) is slidably limited to the plug housing (7). When the front end of the plug is inserted into the rear end of the socket, the socket housing hook (16-1) of the socket housing (16) pushes up the CPA hook (6-3) and pushes the CPA (6) to achieve the connection and locking of the plug and the socket.

2. A stable and reliable connector with a TPA structure as described in claim 1, characterized in that: The CPA (6) has CPA outer ribs (6-1) at both ends of its bottom. The plug housing (7) has plug housing bosses (7-3) at both ends of its top groove bottom. The CPA outer ribs (6-1) are slidably connected to their corresponding plug housing bosses (7-3). Three sliding ribs are arranged in parallel between the two plug housing bosses (7-3). Two CPA guide blocks are arranged between the two CPA outer ribs (6-1). The two CPA guide blocks are slidably locked between adjacent sliding ribs. CPA hooks (6-3) are located on the front side of the CPA (6). CPA limit buckles (6-2) are arranged between the CPA guide blocks and their adjacent CPA outer ribs (6-1). CPA limit bosses (6-5) are arranged between the two CPA guide blocks. Plug housing buckles (7-4) are arranged on the two outer sliding ribs. Plug housing limit ribs (7-7) are arranged on the central sliding rib. Plug housing limit blocks (7-5) are arranged inside the plug housing (7).

3. A stable and reliable connector with a TPA structure as described in claim 2, characterized in that: Before CPA (6) is pushed in, the plug housing latch (7-4) presses against the CPA limit latch (6-2), restricting the position of CPA (6) and preventing it from exiting. At this time, the plug housing limit block (7-5) presses against the CPA hook (6-3), preventing CPA (6) from being pushed in.

4. A stable and reliable connector with a TPA structure as described in claim 2, characterized in that: When the socket and plug are assembled and plugged in, the socket housing hook (16-1) of the socket housing (16) pushes up the CPA hook (6-3), so that the plug housing buckle (7-4) fits with the socket housing hook (16-1) to form a primary lock. The socket housing buckle (16-3) presses down the plug housing limiting end block (7-6). After plugging in, the socket housing buckle (16-3) and the plug housing limiting end block (7-6) cooperate to form a secondary lock. At the same time, the CPA limiting step (6-4) presses against the rear end face (16-2) of the socket housing to prevent the CPA (6) from being pushed in further. The CPA hook (6-3) and the CPA limiting boss (6-5) respectively cooperates with the outer end of the plug housing limiting block (7-5) and the plug housing limiting protrusion (7-7), making it difficult for CPA (6) to be pushed out; at the same time, the CPA boss (6-6) cooperates with the end face (7-8) of the plug housing pressure block, making the plug housing pressure block (7-9) unable to be pressed down and the connector cannot be opened. At this time, only by pressing down CPA (6) and backing it to the push-in position, and pressing down the plug housing boss (7-3), the primary lock of the connector is opened, and the plug housing spring (7-10) is pressed down, and the socket housing buckle (16-3) and the plug housing limiting end block (7-6) are misaligned, the secondary lock can be unlocked and the connector can be opened.

5. A stable and reliable connector with a TPA structure as described in claim 1, characterized in that: The power spring (5) includes a power spring limiting spring (5-1) and a power spring limiting step (5-2). The power spring limiting spring (5-1) and the power spring limiting step (5-2) are respectively limited and engaged with the plug inner shell limiting step (9-1) and the first plug inner shell limiting spring (9-2). The plug inner shell limiting step (9-1) and the first plug inner shell limiting spring (9-2) are engaged on all four sides to prevent the plug terminal of the power spring (5) from coming out. The power spring bubble point (5-3) makes the contact more stable after the power pin insertion section (14-2) is inserted.

6. A stable and reliable connector with a TPA structure as described in claim 1, characterized in that: When the plug inner shell (9) is inserted into the plug shield shell (8), the plug shield shell anti-retraction hole (8-1) cooperates with the plug inner shell anti-retraction step (9-3) to prevent the inner shell from exiting the shield shell; the socket shield shell side (17-2) cooperates with the socket outer shell front limiting step (16-4) to prevent the socket shield shell (17) from being inserted further; at the same time, the socket shield shell spring piece (17-3) cooperates with the socket outer shell rear limiting step (16-5) to prevent the socket shield shell from exiting the assembly position; the socket shield shell folded edge (17-4) cooperates with the socket outer shell limiting groove (16-6) to prevent the socket shield shell from deforming along the tear (17-5); The plug shielding shell limiting spring (8-2), the second plug inner shell limiting spring (9-4), and the plug outer shell rear limiting step (7-11) cooperate to prevent the shielding shell assembly from coming out. The plug shielding shell rear ring spring (8-3) and the shielding outer ring (4) make contact and conduction. The shielding outer ring (4) and the shielding inner ring (3) achieve wire harness shielding conduction by clamping the wire harness shielding layer. The plug shielding shell limiting spring (8-2) and the plug shielding shell front anti-reverse hole (8-5) cooperate with the socket shielding shell outer end face (17-1) to make the plug shielding shell (8) and the socket shielding shell (17) conduction, realizing the connection of connector shielding and wire harness shielding to form complete electromagnetic shielding.

7. A stable and reliable connector with a TPA structure as described in claim 1, characterized in that: During assembly, the interlocking spring protrusion (10-1) is flush with the plug inner shell limiting protrusion (9-5), restricting the interlocking spring (10) from being inserted further. The interlocking spring outer bubble (10-2) engages with the plug inner shell (9), and the interlocking spring spring (10-3) engages with the plug inner shell surface (9-7) to fix the spring in the inner shell. At the same time, the interlocking spring spring (10-3) engages with the plug inner shell limiting plate (9-8) to prevent the spring from coming out after assembly. The interlocking spring inner bubble (10-4) is in interference contact with the interlocking pin insertion section (13-1) to increase conductivity. The power pin spring (14-1) engages with the socket outer shell limiting plate (16-7) to prevent the power pin from coming out. The interlocking pin (13) passes through the two TPA through holes in the middle of the TPA (12). The interlocking pin insertion section (13-1) is in contact with the inner bubble point (10-4) of the interlocking spring to form a low-voltage circuit. When the connector is opened unexpectedly, the power pin (14) and the interlocking pin (13) are pulled out together. When the pin insertion section (13-1) exceeds the inner bubble point (10-4) of the interlocking spring, the power pin insertion section (14-2) has not yet left the power spring bubble point (5-3) to avoid risks.

8. A stable and reliable connector with a TPA structure as described in claim 7, characterized in that: Before the power pin (14) and interlock pin (13) are installed, the TPA spring (12-1) engages with the outer snap (16-8) of the socket housing to form a pre-assembly; after the power pin (14) and interlock pin (13) are inserted, the TPA spring (12-1) engages with the inner snap (16-9) of the socket housing to prevent the wire harness from shaking.

9. A stable and reliable connector with a TPA structure as described in claim 1, characterized in that: The plug housing (7) has a wire harness sealing ring (2) on the inner side of its rear end, which is fixed by the rear cover (1).

10. A stable and reliable connector with a TPA structure as described in claim 9, characterized in that: The back cover (1) has back cover limiting grooves on both sides, and the plug housing (7) has plug housing limiting posts on both sides of the rear end. The plug housing limiting posts are engaged in their corresponding back cover limiting grooves. After the back cover (1) product is symmetrically engaged, a universal component interlocking structure is realized. The back cover notch (1-3) is matched with the back cover rib (1-4) to realize the universal component interlocking combination into a complete structure.

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