Stable and reliable connector with TPA structure

Abstract

The stable and reliable connector with the TPA structure comprises a plug, the plug comprises a plug outer shell, a plug shielding shell and a plug inner shell are sequentially arranged in the plug outer shell, power insertion springs are arranged in two end holes of the plug inner shell, and an interlocking insertion spring is arranged in a center hole of the plug inner shell; a CPA is arranged at the top of the plug shell, the CPA is connected with the plug shell in a sliding and limiting mode, and when the front end of the plug is inserted into the rear end of the socket, the socket shell clamping hook of the socket shell jacks up the CPA clamping hook and pushes the CPA to achieve connection locking of the plug and the socket. The terminals are ensured to be correctly aligned and completely inserted, so that the reliability of electrical connection is improved; by providing additional contact pressure and mechanical support, the TPA can enhance the durability and stability of the connector; the assembly is simpler, whether the connection is correct or not can be quickly confirmed, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of wire harness connectors, and specifically relates to a stable and reliable connector with a TPA structure. BACKGROUND

[0002] The wire harness connector is a kind of terminal, and the connector, also called a plug connector, is composed of a plug and a socket. The connector is a relay station of a wire harness in an electric circuit, and the connection between wire harnesses and between a wire harness and an electric component is generally achieved by using the connector. The wire harness connector is widely applied to automobiles, household appliances, instruments and meters, office equipment, commercial machines, electronic component lead wires and electronic control panels. The wire harness connector is an important component for connecting various electric appliances and electronic devices, and a locking device is used in all the connectors to prevent the connector from being separated in a mechanical device. Meanwhile, when the wire harness is arranged in the interior of a mechanical device, the connector is fixed to a truss or beam in the interior of the mechanical device by using a cable tie to limit the shaking of the wire harness in the interior of the device.

[0003] However, the tail cover of the existing connector is generally in an integral structure, and the integral tail cover is difficult to assemble. The cable needs to be arranged in place before the tail cover is assembled, which requires a large amount of time to arrange the cable. In addition, the integral tail cover structure is fixed, and the cable on both sides is easily deformed when being bent. In addition, the connector cannot guarantee that the terminal is correctly aligned and completely inserted during plugging, which is prone to cause incorrect operation and damage risk. Moreover, the shielding shell of the existing connector is generally in a straight cylinder structure, and the connection is not stable. The shielding shell is easily loosened due to vibration or impact, and the shielding effect is general. SUMMARY

[0004] The application aims to overcome the defects of the prior art and provide a stable and reliable connector with a TPA structure.

[0005] To achieve the above-mentioned purpose, the application adopts the following technical scheme:

[0006] The stable and reliable connector with a TPA structure comprises a plug, the plug comprises a plug shell, a plug shielding shell and a plug inner shell are sequentially arranged in the plug shell, power springs are arranged in the holes at both ends of the plug inner shell, and interlocking springs are arranged in the center hole of the plug inner shell.

[0007] A CPA is arranged at the top of the plug shell, the CPA is in sliding limiting connection with the plug shell, when the front end of the plug is inserted into the rear end of the socket, the socket shell clamping hook of the socket shell of the socket pushes up the CPA clamping hook, and the CPA is pushed to realize the connection and locking of the plug and the socket.

[0008] Preferably, both ends of the CPA bottom are provided with CPA outer muscles, both ends of the plug shell top groove bottom are provided with plug shell bosses, the CPA outer muscles are in sliding connection with the corresponding plug shell bosses, three sliding rib muscles are provided in parallel between the two plug shell bosses, two CPA guide blocks are provided between the two CPA outer muscles, the two CPA guide blocks are respectively in sliding and clamping between the adjacent sliding rib muscles, the CPA clamping hook is provided on the CPA front side, the CPA guide block is provided with a CPA limiting buckle between the adjacent CPA outer muscle, two CPA limiting bosses are provided between the two CPA guide blocks, plug shell buckles are provided on the two outer sliding rib muscles, a plug shell limiting convex rib is provided on the central sliding rib muscle, and a plug shell limiting block is provided in the plug shell.

[0009] Preferably, before the CPA is pushed in, the plug shell buckle abuts against the CPA limiting buckle, limiting the position of the CPA, and preventing it from exiting, at this time, the plug shell limiting block abuts against the CPA clamping hook, limiting the CPA from being pushed in.

[0010] Preferably, when the socket and the plug are assembled and plugged in, the socket shell clamping hook lifts the CPA clamping hook, the plug shell buckle is in abutment with the socket shell clamping hook, forming a primary lock, the socket shell clamping buckle presses down the plug shell limiting end block, after plugging, the socket shell clamping buckle cooperates with the plug shell limiting end block to form a secondary lock; at the same time, the CPA limiting step abuts against the rear end surface of the socket shell to limit the CPA from being continuously pushed in, the CPA clamping hook and the CPA limiting boss cooperate with the outer end of the plug shell limiting block and the plug shell limiting convex rib respectively, so that the CPA is not easy to be pushed out; at the same time, the CPA boss cooperates with the plug shell pressing block end surface, so that the plug shell pressing block cannot be pressed down and the connector cannot be opened, at this time, only the CPA is pressed down and returned to the state before being pushed in, and the plug shell boss is pressed down to open the connector primary lock, the plug shell spring is pressed down, the socket shell clamping buckle is dislocated with the plug shell limiting end block, so as to open the connector secondary lock.

[0011] 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 in limiting cooperation 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 in four-surface buckling to prevent the power spring plug terminal from being pulled out, and the power spring bubble point makes the power plug pin insertion segment more stable after being inserted.

[0012] Preferably, when the plug inner shell is inserted into the plug shielding shell, the plug shielding shell stop hole cooperates with the plug inner shell stop step to prevent the inner shell from exiting the shielding shell; the socket shielding shell side edge cooperates with the socket shell front limiting step to prevent the socket shielding shell from being continuously inserted; at the same time, the socket shielding shell spring cooperates with the socket shell rear limiting step to prevent the socket shielding shell from exiting the assembly position; the socket shielding shell folded edge cooperates with the socket shell limiting groove to prevent the socket shielding shell from being deformed along the tearing opening.

[0013] The plug shielding shell limiting spring, the plug inner shell limiting spring and the rear limiting step of the plug outer shell cooperate to prevent the shielding shell assembly from being pulled out, the plug shielding shell rear ring spring and the shielding outer ring contact and conduct, the shielding outer ring and the shielding inner ring realize wire harness shielding conduction by clamping the wire harness shielding layer, the plug shielding shell limiting spring, the plug shielding shell front retreat hole and the outer end surface of the socket shielding shell cooperate to make the plug and the socket shielding shell conductive, and the connector shielding and the wire harness shielding form a complete electromagnetic shielding.

[0014] Preferably, during assembly, the interlocking spring convex edge is flat with the plug inner shell limiting convex platform, the interlocking spring convex edge limits the interlocking spring from being inserted further, the interlocking spring bubble point is matched with the plug inner shell, the interlocking spring spring sheet is matched with the plug inner shell surface, and the interlocking spring is fixed in the inner shell; at the same time, the interlocking spring spring sheet is matched with the plug inner shell limiting card table, so that the interlocking spring cannot be pulled out after assembly; the interlocking spring bubble point is in interference contact with the interlocking pin insertion section, the power pin spring sheet is matched with the socket outer shell limiting card table, and the power pin is prevented from being pulled out;

[0015] The interlocking pin passes through the two TPA through holes in the TPA, the interlocking pin insertion section is matched with the interlocking spring bubble point, a low-voltage loop is formed, when the connector is accidentally opened, the power pin and the interlocking pin are pulled out together, and when the pin insertion section exceeds the interlocking spring bubble point, the power pin insertion section has not left the power spring bubble point, thereby avoiding risks.

[0016] Preferably, before the power pin and the interlocking pin are assembled, the TPA spring sheet is matched with the outer buckle of the socket outer shell to form a pre-assembly; after the power pin and the interlocking pin are inserted, the TPA spring sheet is matched with the inner buckle of the socket outer shell to prevent the wire harness from shaking.

[0017] Preferably, the rear end inside of the plug outer shell is provided with a wire harness sealing ring, and the wire harness sealing ring is fixed through the rear cover.

[0018] Preferably, the rear cover is provided with a rear cover limiting groove on both sides, the plug outer shell is provided with a plug outer shell limiting column on both sides of the rear end, the plug outer shell limiting column is clamped in the corresponding rear cover limiting groove, the rear cover product is symmetrically clamped to realize a universal interlocking structure, the rear cover notch is matched with the rear cover rib position, and the universal interlocking is combined into a complete structure.

[0019] As described above, due to the adoption of the above technical scheme, the application has the following beneficial effects:

[0020] In the application, the connector plug rear cover structure is assembled by symmetric clamping to realize universal interlocking, two parts are combined into a complete structure, compared with the traditional integral tail cover, it is more time-saving in assembly, cable assembly can be realized step by step, and the tail cover does not need to be assembled together after all the cables are arranged; meanwhile, compared with the traditional integral tail cover, the split tail cover realizes stronger transverse connection structure through the interlocking structure, and is not easy to deform when the cable is bent after the cable assembly is completed.

[0021] In the application, the connector TPA improves the connection reliability, the TPA can reduce the risk of incorrect operation and damage during connector plugging, ensure the correct alignment and complete insertion of the terminal, thereby improving the reliability of electrical connection. At the same time, the mechanical stability is enhanced, the TPA can enhance the durability and stability of the connector in harsh environment by providing additional contact pressure and mechanical support. The assembly process is simplified, the design of the TPA makes the assembly of the connector more simple, and whether the connection is completed correctly can be quickly confirmed, the production efficiency is improved.

[0022] In the application, the socket shielding shell contact improves electromagnetic compatibility, more contacts realize better shielding, reduce electromagnetic noise radiation, and provide a good grounding path for the shielding layer current, enhance electrical performance, increase contact points to reduce contact resistance, and improve the overall electrical performance of the connector. Improve mechanical stability, reduce the risk of loosening caused by vibration or impact, prolong service life. Improve shielding effect, multi-point elastic contact design does not need additional welding or screws, simplify installation, reduce cost, and at the same time reduce electromagnetic interference range. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is an explosion view of the plug of the application;

[0024] Figure 2 is a top view of the plug of the application;

[0025] Figure 3 is a bottom view of the plug of the application;

[0026] Figure 4 is an explosion view of the socket of the application;

[0027] Figure 5 is a horizontal cross-sectional view of the plug and socket connection of the application;

[0028] Figure 6 is a vertical cross-sectional view of the plug and socket connection of the application;

[0029] Figure 7 is a cross-sectional view of the plug before the CPA is inserted;

[0030] Figure 8 is a cross-sectional view of the plug after the CPA is inserted;

[0031] Figure 9 is the sectional view of the socket before TPA insertion of the present application;

[0032] Figure 10 is the sectional view of the socket after TPA insertion of the present application;

[0033] Figure 11 is the schematic diagram of the process of the connection between the plug shell limiting end block and the socket shell buckle of the present application.

[0034] Reference: 1, back cover; 1-3, back cover notch; 1-4, back cover stop; 2, wire harness seal ring; 3, shield inner ring; 4, shield outer ring; 5, power plug spring; 5-1, power plug spring limit spring; 5-2, power plug spring limit step; 5-3, power plug spring bubble point; 6, CPA; 6-1, CPA outer stop; 6-2, CPA limit buckle; 6-3, CPA hook; 6-4, CPA limit step; 6-5, CPA limit boss; 6-6, CPA boss; 7, plug shell; 7-3, plug shell boss; 7-4, plug shell buckle; 7-5, plug shell limit block; 7-6, plug shell limit end block; 7-7, plug shell limit convex stop; 7-8, plug shell pressure block end face; 7-9, plug shell pressure block; 7-10, plug shell spring; 7-11, plug shell rear limit step; 8, plug shield shell; 8-1, plug shield shell stop hole; 8-2, plug shield shell limit spring; 8-3, plug shield shell rear ring spring; 8-5, plug shield shell front stop hole; 9, plug inner shell; 9-1, plug inner shell limit step; 9-2, plug inner shell limit spring; 9-3, plug inner shell stop step; 9-4, plug inner shell limit spring; 9-5, plug inner shell limit boss; 9-7, plug inner shell face; 9-8, plug inner shell limit card table; 10, interlocking plug spring; 10-1, interlocking plug spring convex edge; 10-2, interlocking plug spring bubble point; 10-3, interlocking plug spring spring; 10-4, interlocking plug spring inner bubble point; 11, plug seal 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 seal ring; 16, socket shell; 16-1, socket shell hook; 16-2, socket shell rear end face; 16-3, socket shell buckle; 16-4, socket shell front limit step; 16-5, socket shell rear limit step; 16-6, socket shell limit slot; 16-7, socket shell limit card table; 16-8, socket shell outer buckle; 16-9, socket shell inner buckle; 17, socket shield shell; 17-1, socket shield shell outer end face; 17-2, socket shield shell side edge; 17-3, socket shield shell spring; 17-4, socket shield shell folded edge; 17-5, socket shield shell along tear; 18, bushing. DETAILED DESCRIPTION

[0035] The specific embodiments of the present application are described in detail below.

[0036] The "range" disclosed in this invention 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 1 and 2, and the maximum range values ​​are 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.

[0037] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0038] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0039] 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.

[0040] 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.

[0041] Unless otherwise specified, the reaction will proceed under normal temperature and pressure conditions.

[0042] Unless otherwise specified, all parts or percentages are by weight or by weight percentage.

[0043] In the present application, all the substances used are known substances, which can be purchased or synthesized by known methods.

[0044] In the present application, all the devices or apparatuses used are conventional devices or apparatuses known in the field, which can be purchased.

[0045] The following will further illustrate the specific embodiments of the stable and reliable connector with TPA structure of the present application in combination with examples. The stable and reliable connector with TPA structure of the present application is not limited to the description of the following examples.

[0046] Example 1:

[0047] A stable and reliable connector with TPA structure, as shown in Figures 1-11 , comprises:

[0048] Rear cover 1: two rear covers are provided, and the two rear covers are of split structure. Each of the two rear covers is provided with a rear cover limiting groove. The rear end of the plug shell 7 is provided with plug shell limiting posts on both sides. The plug shell limiting posts are clamped in the corresponding rear cover limiting grooves. The two rear covers 1 are symmetrically arranged. The inner side of the rear cover 1 is provided with an L-shaped rear cover gap 1-3 and a rear cover rib 1-4. The rear cover gap 1-3 of the rear cover 1 is clamped with the rear cover rib 1-4 of the other rear cover 1. The rear cover gap 1-3 and the rear cover rib 1-4 are matched to realize the interlocking combination of universal parts into a complete structure. The function is to realize a stronger linking structure while meeting the assembly of two cables separately, and to prevent the cable from being deformed when the cable is bent after assembly.

[0049] Power plug spring 5: the power plug spring limiting spring sheet 5-1 and the power plug spring limiting step 5-2 are matched with the plug inner shell limiting step 9-1 and the plug inner shell limiting spring sheet 9-2, respectively. The plug inner shell limiting step 9-1 is a buckle matched with the terminal, and the plug inner shell limiting spring sheet 9-2 is a buckle matched with the terminal outer shell. The four buckles are buckled at four positions to prevent the plug terminal from coming out. The power plug spring bubble point 5-3 makes the power plug pin insertion section 14-2 inserted to contact more closely.

[0050] CPA6: CPA6 is matched with the plug shell boss 7-3 through the CPA two sides muscle position 6-1, to realize two states of push before preloading and push after state, CPA push before state, plug shell buckle 7-4 is against CPA limit buckle 6-2, the role is to limit the position of CPA, don't let it quit, at this time, the plug shell limit block 7-5 is against CPA card hook 6-3, CPA cannot be pushed in. When the socket and plug are assembled and plugged, the socket shell hook 16-1 of the socket shell 16 will lift the CPA card hook 6-3, the role is to make the plug shell buckle 7-5 and the socket shell hook 16-1 fit, form a one-time lock, the socket shell buckle 16-3 presses down the plug shell limit end block 7-6, after plugging, the socket shell buckle 16-3 and the plug shell limit end block 7-6 cooperate to form a secondary lock. At the same time, CPA limit step 6-4 is against the rear end surface 16-2 of the socket shell to limit CPA6 from continuing to push in, CPA card hook 6-3, CPA limit boss 6-5 are matched with the outer end of plug shell limit block 7-5 and plug shell limit boss 7-7 respectively, so that CPA is not easy to push out. At the same time, CPA boss 6-6 is matched with plug shell pressing block end surface 7-8, so that plug shell pressing block 7-9 cannot be pressed down and the connector cannot be opened. At this time, only by pressing down CPA6 and retreating to the state before pushing in, and pressing down plug shell boss 7-3, can the connector one-time lock be opened. Press down the plug shell spring 7-10, the socket shell buckle 16-3 and the plug shell limit end block 7-6 are misaligned, so that the secondary lock can be opened and the connector can be opened.

[0051] Further, the rear end of the plug shell pressing block 7-9 is connected with the side wall of the plug shell 7, and the front end of the plug shell pressing block 7-9 is a suspended elastic structure. Before the CPA6 is inserted, the plug shell pressing block end surface 7-8 is separated from the CPA boss 6-6. At this time, the plug shell pressing block 7-9 can be pressed to the plug shell pressing block end surface 7-8 in contact with the top of the CPA6. After the CPA6 is inserted, the CPA boss 6-6 is against the plug shell pressing block end surface 7-8, and the plug shell pressing block 7-9 cannot be pressed down.

[0052] Further, the two plug shell limit end blocks 7-6 are respectively provided with plug shell spring 7-10 at both ends, the top of the socket shell 7 is symmetrically provided with two guide rails, and the two socket shell buckles 16-3 are respectively arranged inside the two guide rails. During installation, the two plug shell limit end blocks 7-6 slide along the inside of the two guide rails until they come into contact with the socket shell buckle 16-3. The contact surface of the plug shell limit end block 7-6 and the socket shell buckle 16-3 adopts an arc-shaped inclined surface structure. As the socket shell buckle 16-3 moves and presses down the two plug shell limit end blocks 7-6, it also drives the plug shell spring 7-10 to press down. Until the socket shell buckle 16-3 slides past the plug shell limit end block 7-6, the limit end block 7-6 rebounds, and the socket shell buckle 16-3 cooperates with the plug shell limit end block 7-6 to form a secondary lock.

[0053] Press down the plug shell elastic sheet 7-10, the plug shell limit end block 7-6 is pressed down, at this time the upper end position height of the plug shell limit end block 7-6 is lower than the lower end position height of the socket shell buckle 16-3, the socket shell buckle 16-3 can exit.

[0054] Plug shielding shell 8: when the plug inner shell 9 is inserted into the plug shielding shell 8, the plug shielding shell stop hole 8-1 cooperates with the plug inner shell stop step 9-3 to prevent the inner shell from exiting the shielding shell; the plug shielding shell limiting elastic sheet 8-2, the plug inner shell limiting elastic sheet 9-4 and the plug shell rear limiting step 7-11 cooperate to prevent the shielding shell assembly from exiting, the plug shielding shell rear ring elastic sheet 8-3 contacts the shielding outer ring 4, the shielding outer ring 4 and the shielding inner ring 3 realize the wire harness shielding conduction through clamping the wire harness shielding layer, the plug shielding shell limiting elastic sheet 8-2 and the plug shielding shell front stop hole 8-5 cooperate with the socket shielding shell outer end surface 17-1 to make the plug 8 and the socket shielding shell 17 conductive, realizing the complete electromagnetic shielding of the connector shielding and the wire harness shielding.

[0055] Interlocking spring 10: when assembled, the interlocking spring convex edge 10-1 is flat with the plug inner shell limiting convex platform 9-5 to limit the interlocking spring from continuing to insert, the interlocking spring outer bubble point 10-2 cooperates with the plug inner shell 9-6, the interlocking spring elastic sheet 10-3 cooperates with the plug inner shell surface 9-7 to fix the position of the interlocking spring in the inner shell; at the same time, the interlocking spring elastic sheet 10-3 cooperates with the plug inner shell limiting card table 9-8 to prevent the interlocking spring from coming out after assembly; the interlocking spring inner bubble point 10-4 is in interference contact with the interlocking pin insertion section 13-1 to increase the conduction.

[0056] Socket shielding shell 17: the socket shielding shell side 17-2 cooperates with the socket shell front limiting step 16-4 to prevent the socket shielding shell 17 from continuing to insert; at the same time, the socket shielding shell elastic sheet 17-3 cooperates with the socket shell rear limiting step 16-5 to prevent the socket shielding shell from exiting the assembly position; the socket shielding shell folded edge 17-4 cooperates with the socket shell limiting groove 16-6 to prevent the socket shielding shell from deforming along the tear 17-5.

[0057] Power pin 14: after assembly, the power pin elastic sheet 14-1 cooperates with the socket shell limiting card table 16-7 to prevent the power pin from coming out.

[0058] Interlocking pin 13: the interlocking pin 13 passes through the two TPA through holes in the TPA 12, the interlocking pin insertion section 13-1 is in contact with the interlocking spring inner bubble point 10-4 to form a low-voltage loop, when the connector is accidentally opened, the power pin 14 and the interlocking pin 13 exit together, when the pin insertion section 13-1 exceeds the interlocking spring inner bubble point 10-4, the power pin insertion section 14-2 has not left the power spring bubble point 5-3, avoiding risks.

[0059] TPA12: Before the interlocking pins 13 and power pins 14 are assembled, the TPA spring sheet 12-1 cooperates with the outer buckle 16-8 of the socket shell to form a pre-assembly. After the interlocking pins 13 and power pins 14 are inserted, the TPA spring sheet 12-1 cooperates with the inner buckle 16-9 of the socket shell to prevent the wire harness from shaking.

[0060] Further, the outer buckle 16-8 and the inner buckle 16-9 of the socket shell are sequentially arranged from the outside to the inside at the top of the rear end of the socket shell 16, and the outer buckle 16-8 and the inner buckle 16-9 of the socket shell are both arranged in a structure with gradually increasing height from the outside to the inside, which facilitates lifting the TPA spring sheet 12-1 during installation, and after installation is completed, the TPA spring sheet 12-1 can be clamped and fixed.

[0061] The front end of the socket shell 16 is provided with a plurality of bushings 18 for connecting electrical wires.

[0062] By adopting the above technical scheme:

[0063] 1. The connector plug rear cover 1 structure is symmetrically clamped and assembled to realize universal interlocking, and two parts are combined into a complete structure. Compared with the traditional integral tail cover, the assembly time is more time-saving, the cable can be assembled step by step, and there is no need to assemble the tail cover together after all the cables are arranged; at the same time, compared with the traditional integral tail cover, the structure of the split tail cover realizes a stronger transverse connection structure through the interlocking structure, and the cable is not easy to deform when it is bent after the cable assembly is completed.

[0064] 2. The TPA of the connector improves the connection reliability, the TPA can reduce the risk of incorrect operation and damage during connector plugging, ensures the correct alignment and complete insertion of the terminal, and improves the reliability of the electrical connection. At the same time, the mechanical stability is enhanced, the TPA can enhance the durability and stability of the connector in harsh environments by providing additional contact pressure and mechanical support. Simplify the assembly process, the design of the TPA makes the assembly of the connector more simple, and it can quickly confirm whether the connection is completed correctly, and improve the production efficiency.

[0065] 3. The contact of the socket shielding shell 17 improves the electromagnetic compatibility, more contacts realize better shielding, reduce electromagnetic noise radiation, and provide a good grounding path for the shielding layer current. Enhance the electrical performance, increase the contact resistance, improve the overall electrical performance of the connector. Improve mechanical stability, reduce the risk of loosening caused by vibration or impact, and prolong the service life. Improve the shielding effect, the multi-point elastic contact design does not need additional welding or screws, simplifies the installation, reduces the cost, and at the same time reduces the electromagnetic interference range.

[0066] 4. The existing products on the market can usually only adapt to 2.5mm2 and 4mm 2 wire, while the product of the present application realizes a breakthrough in design, not only fully compatible with 2.5mm 2 and 4mm 2 wire, but also further supports the adaptation of 6mm 2 wire, thereby meeting more diversified use requirements, bringing higher applicability and convenience to users.

[0067] The above is a further detailed description of the present application in combination with specific preferred embodiments, and cannot be deemed to limit the specific implementation of the present application to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, a number of simple deductions or substitutions can be made without departing from the concept of the present application, and all of them shall be deemed to fall within the protection scope of the present application.

Claims

1. A stable and reliable connector having a TPA structure, characterized by, The plug comprises a plug shell (7) with a plug shielding shell (8) and a plug inner shell (9) arranged in sequence inside the plug shell (7), power springs (5) arranged in the holes at both ends of the plug inner shell (9), and an interlocking spring (10) arranged in the central hole of the plug inner shell (9); The top of the plug shell (7) is provided with a CPA (6) in sliding limit connection with the plug shell (7), when the front end of the plug is inserted into the rear end of the socket, the socket shell clamping hook (16-1) of the socket shell (16) lifts the CPA clamping hook (6-3) to push the CPA (6) to realize the connection and locking of the plug and the socket.

2. A stable and reliable connector with TPA structure as claimed in claim 1, wherein: The bottom of the CPA (6) is provided with CPA outer ribs (6-1) at both ends, the top of the plug shell (7) is provided with plug shell bosses (7-3) at both ends of the groove bottom, the CPA outer ribs (6-1) are in sliding connection with the corresponding plug shell bosses (7-3), three sliding rib ribs are arranged in parallel between the two plug shell bosses (7-3), two CPA guide blocks are arranged between the two CPA outer ribs (6-1), the two CPA guide blocks are respectively slidingly clamped between adjacent sliding rib ribs, the CPA clamping hook (6-3) is arranged on the front side of the CPA (6), the CPA guide block is provided with a CPA limit buckle (6-2) between the adjacent CPA outer rib (6-1), the two CPA guide blocks are provided with a CPA limit boss (6-5), the sliding rib ribs on both outer sides are provided with plug shell buckles (7-4), the sliding rib rib in the center is provided with a plug shell limit convex rib (7-7), and the plug shell (7) is provided with a plug shell limit block (7-5).

3. A stable and reliable connector with TPA structure as claimed in claim 2, wherein: The state before the CPA (6) is pushed in, the plug shell buckle (7-4) abuts against the CPA limit buckle (6-2) to limit the position of the CPA (6) and prevent it from being withdrawn, at this time the plug shell limit block (7-5) abuts against the CPA clamping hook (6-3) to limit the CPA (6) from being pushed in.

4. A stable and reliable connector with TPA structure as claimed in claim 2, wherein: When the socket and the plug are assembled and plugged, the socket shell clamping hook (16-1) of the socket shell (16) lifts the CPA clamping hook (6-3), the plug shell clamping buckle (7-5) is attached to the socket shell clamping hook (16-1), a primary lock is formed, the socket shell clamping buckle (16-3) presses the plug shell limiting end block (7-6), after plugging, the socket shell clamping buckle (16-3) cooperates with the plug shell limiting end block (7-6) to form a secondary lock; at the same time, the CPA limiting step (6-4) abuts against the rear end surface (16-2) of the socket shell to limit the CPA (6) from continuing to be pushed in, the CPA clamping hook (6-3) and the CPA limiting boss (6-5) cooperate with the outer end of the plug shell limiting block (7-5) and the plug shell limiting boss (7-7) respectively, so that the CPA (6) is not easy to be pushed out; at the same time, the CPA boss (6-6) cooperates with the plug shell pressing block end surface (7-8), so that the plug shell pressing block (7-9) cannot be pressed down and the connector cannot be opened; at this time, only the CPA (6) is pressed down and withdrawn to the state before being pushed in, the plug shell boss (7-3) is pressed down, the primary lock of the connector is opened, the plug shell spring sheet (7-10) is pressed down, the socket shell clamping buckle (16-3) is dislocated with the plug shell limiting end block (7-6), and the secondary lock of the connector can be opened.

5. A stable and reliable connector with TPA structure as claimed in claim 1, wherein: The power plug spring (5) includes a power plug spring limiting spring sheet (5-1) and a power plug spring limiting step (5-2), the power plug spring limiting spring sheet (5-1) and the power plug spring limiting step (5-2) are respectively limited to cooperate with the plug inner shell limiting step (9-1) and the plug inner shell limiting spring sheet (9-2), the plug inner shell limiting step (9-1) and the plug inner shell limiting spring sheet (9-2) are buckled on four sides to prevent the power plug spring (5) from being pulled out of the plug terminal, and the power plug spring bubble point (5-3) makes the power plug pin insertion section (14-2) more stable after being inserted.

6. A stable and reliable connector with TPA structure as claimed in claim 1, wherein: When the plug inner shell (9) is inserted into the plug shielding shell (8), the plug shielding shell stop hole (8-1) cooperates with the plug inner shell stop step (9-3) to prevent the inner shell from being pulled out of the shielding shell; the socket shielding shell side (17-2) cooperates with the socket shell front limiting step (16-4) to prevent the socket shielding shell (17) from being further inserted; at the same time, the socket shielding shell spring sheet (17-3) cooperates with the socket shell rear limiting step (16-5) to prevent the socket shielding shell from being pulled out of the assembly position; the socket shielding shell folded edge (17-4) cooperates with the socket shell limiting groove (16-6) to prevent the socket shielding shell from being deformed along the tear edge (17-5); The plug shielding shell limiting spring (8-2), the 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 being pulled out, the plug shielding shell rear ring spring (8-3) and the shielding outer ring (4) are in contact and conductive, the shielding outer ring (4) and the shielding inner ring (3) realize wire harness shielding conduction by clamping the wire harness shielding layer, the plug shielding shell limiting spring (8-2), the plug shielding shell front stop hole (8-5) and the socket shielding shell outer end surface (17-1) cooperate to make the plug (8) and the socket shielding shell (17) conductive, and complete electromagnetic shielding of the connector shielding and the wire harness shielding.

7. A stable and reliable connector with TPA structure as claimed in claim 1, wherein: When assembled, the interlocking plug spring convex edge (10-1) is flat with the plug inner shell limiting convex platform (9-5), the interlocking plug spring (10) is limited to continue to be inserted, the interlocking plug spring outer bubble point (10-2) cooperates with the plug inner shell (9-6), the interlocking plug spring spring (10-3) cooperates with the plug inner shell surface (9-7), and the plug spring is fixed in the inner shell position; at the same time, the interlocking plug spring spring (10-3) cooperates with the plug inner shell limiting clamping platform (9-8) to prevent the plug spring from being pulled out after assembly; the interlocking plug spring inner bubble point (10-4) is in interference contact with the interlocking plug pin insertion section (13-1), and the power plug pin spring (14-1) cooperates with the socket outer shell limiting clamping platform (16-7) to prevent the power plug pin from being pulled out; The interlocking plug pin (13) passes through the two TPA through holes in the middle of the TPA (12), the interlocking plug pin insertion section (13-1) is in contact with the interlocking plug spring inner bubble point (10-4), and a low-voltage loop is formed; when the connector is accidentally opened, the power plug pin (14) and the interlocking plug pin (13) are pulled out together; when the plug pin insertion section (13-1) exceeds the interlocking plug spring inner bubble point (10-4), the power plug pin insertion section (14-2) has not left the power plug spring bubble point (5-3), thereby avoiding risks.

8. A stable and reliable connector with TPA structure as claimed in claim 7, wherein: Before the power plug pin (14) and the interlocking plug pin (13) are assembled, the TPA spring (12-1) cooperates with the socket outer shell outer buckle (16-8) to form a pre-assembly; after the power plug pin (14) and the interlocking plug pin (13) are inserted, the TPA spring (12-1) cooperates with the socket outer shell inner buckle (16-9) to prevent the wire harness from shaking.

9. A stable and reliable connector with TPA structure as claimed in claim 1, wherein: The plug outer shell (7) is provided with a wire harness sealing ring (2) on the inner side of the rear end, and is fixed through the rear cover (1).

10. A stable and reliable connector with TPA structure as claimed in claim 9, wherein: The rear cover (1) is provided with a rear cover limiting groove on both sides, the plug outer shell (7) is provided with a plug outer shell limiting column on both sides of the rear end, the plug outer shell limiting column is clamped in the corresponding rear cover limiting groove, the rear cover (1) product is symmetrically clamped to realize the universal piece interlocking structure, the rear cover gap (1-3) and the rear cover rib (1-4) are matched to realize the universal piece interlocking combination into a complete structure.

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