Plug connector and vehicle-mounted SSD system

Abstract

The invention discloses a plug connector and a vehicle-mounted SSD system, and relates to the technical field of vehicle-mounted SSD connection, the plug connector comprises a conductive terminal, an overmolding composite unit, an insulating inner shell and an insulating outer shell, the overmolding composite unit is integrated with a primary fixing feature for locking the position of the conductive terminal, and the insulating outer shell is integrated with a secondary fixing feature for locking the position of the conductive terminal. The insulating outer shell and the insulating inner shell are each provided with a secondary fixing feature used for forming a secondary TPA fixing mechanism with the SSD. The conductive terminals and the plastic substrate are combined into an integrated structure by adopting an injection molding process, the conductive terminals are fixed by integrating a primary TPA fixing mechanism, and rigid locking of the plug connector and the SSD is realized through a secondary TPA fixing mechanism, so that the problems that the conductive terminals are loosened, abraded or invalid when an existing SSD connector is applied to a vehicle-mounted working condition, and the service life of the SSD connector is prolonged are solved. And the technical problems of insufficient stability, insufficient structural strength, reduced durability after repeated plugging and unplugging, incapability of meeting the requirements, complex installation and high cost are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of in-vehicle solid-state drive (SSD) connection, and particularly to a plug connector and an in-vehicle SSD system. Background Art

[0002] With the rapid development of automotive technology, the demand for high-performance, high-durability, and high-reliability storage solutions in in-vehicle systems has increased significantly. Due to advantages such as high speed, shock resistance, and compact form, solid-state drives (SSDs) have gradually been widely used in in-vehicle scenarios.

[0003] In-vehicle systems usually configure plug connectors and socket connectors to achieve electrical connection between the SSD and the electronic system. However, existing SSD connectors particularly rely on welding or frictional contact, resulting in the following technical problems when applied to in-vehicle systems: 1. They cannot meet the stringent environmental and mechanical requirements of automotive systems. For example, when exposed to conditions such as vibration, thermal cycling, humidity, and mechanical stress for a long time, the conductive terminals are prone to loosening, wear, or failure due to long-term use, thereby affecting data integrity and shortening the service life of the SSD in the in-vehicle environment.

[0004] 2. There are usually problems such as insufficient contact stability of the conductive terminals, decreased durability after repeated plugging and unplugging, and insufficient structural strength to withstand the harsh in-vehicle environment.

[0005] 3. The assembly and maintenance processes of existing SSD connectors usually lack user-friendliness, increasing the installation complexity and production cost.

[0006] Therefore, it is necessary to improve existing SSD connectors. Summary of the Invention

[0007] One object of the present invention is to provide a plug connector. This connector combines conductive terminals and a plastic matrix into an integrated structure using a overmolding injection process, and integrates a primary TPA fixing mechanism to fix the conductive terminals, solving the technical problems of loosening, wear, or failure of the conductive terminals existing when existing SSD connectors are applied to in-vehicle working conditions, as well as insufficient stability, insufficient structural strength, and decreased durability after repeated plugging and unplugging.

[0008] Another object of the present invention is to provide an in-vehicle SSD system. This system achieves rigid locking of the plug connector and the SSD through a secondary TPA fixing mechanism, thereby forming an overall structure resistant to vibration and thermal stress, solving the technical problems that existing SSD connectors cannot meet the stringent environmental and mechanical requirements of automotive systems, as well as complex installation and high production costs.

[0009] To achieve the above objects, the technical solutions adopted by the present invention are as follows: In a first aspect, the present invention provides a plug connector, comprising: A conductive terminal for electrically connecting with an SSD; A overmolded composite unit that is overmolded on the conductive terminal and forms an integrated structure, and a primary fixing feature for locking the position of the conductive terminal is integrated on the overmolded composite unit; An insulating inner shell configured to accommodate and fix the overmolded composite unit, wherein the overmolded composite unit and the insulating inner shell constitute a primary TPA fixing mechanism through the primary fixing feature; An insulating outer shell configured to encapsulate the insulating inner shell, wherein secondary fixing features for constituting a secondary TPA fixing mechanism with the SSD are provided on both the insulating outer shell and the insulating inner shell.

[0010] The primary fixing feature includes a snap lock, a rib or a groove, and the primary TPA fixing mechanism realizes the position locking of the conductive terminal through the engagement of the primary fixing feature with the corresponding structure of the insulating inner shell.

[0011] The overmolded composite unit overmolds a plastic material on the middle part of the conductive terminal through an injection molding process, both ends of the conductive terminal are exposed outside the overmolded composite unit, and the primary fixing features are symmetrically arranged on the overmolded composite unit.

[0012] The conductive terminal includes an upper row of terminals and a lower row of terminals spaced from each other, both the upper row of terminals and the lower row of terminals include a plurality of signal terminals and a plurality of ground terminals, a shielding sheet and a conductive adhesive are fixed between the upper row of terminals and the lower row of terminals through the overmolded composite unit, and the ground terminals are respectively electrically connected to the shielding sheet through the conductive adhesive.

[0013] The secondary fixing feature includes a locking hole and a locking bar, the locking holes are respectively opened on both sides of the insulating outer shell and on both sides of the insulating inner shell, and the locking holes on both sides of the insulating outer shell respectively correspond to the locking holes on both sides of the insulating inner shell one by one; a locking groove is opened on the SSD, and the secondary TPA fixing mechanism realizes the rigid locking of the insulating outer shell, the insulating inner shell and the SSD by inserting the locking bar into the locking groove and the locking hole simultaneously.

[0014] A buckle structure for connecting with the socket connector is provided on the insulating outer shell.

[0015] The overmolded composite unit and the insulating inner shell are hermetically encapsulated.

[0016] A positioning structure for mating with the socket connector is provided on the insulating inner shell.

[0017] The positioning structure includes an asymmetric anti-fooling key.

[0018] Both the insulating outer shell and the insulating inner shell are made of materials with high-temperature resistance, vibration absorption, and heat conduction characteristics.

[0019] In a second aspect, the present invention provides a vehicle-mounted SSD system, including a plug connector and an SSD. The plug connector includes: A conductive terminal electrically connected to the SSD; A molding compound unit wrapped around the conductive terminal to form an integrated structure. A primary fixing feature for locking the position of the conductive terminal is integrated on the molding compound unit; An insulating inner shell configured to accommodate and fix the molding compound unit, wherein the molding compound unit and the insulating inner shell form a primary TPA fixing mechanism through the primary fixing feature; An insulating outer shell configured to encapsulate the insulating inner shell; Secondary fixing features are configured on both the plug connector and the SSD. A secondary TPA fixing mechanism is formed between the plug connector and the SSD through the secondary fixing features to achieve rigid locking of the plug connector and the SSD.

[0020] The primary fixing feature includes a snap lock, ribs, or grooves. The position of the conductive terminal is locked through the engagement of the primary fixing feature with the corresponding structure of the insulating inner shell in the primary TPA fixing mechanism.

[0021] The molding compound unit wraps a plastic material around the middle of the conductive terminal through an injection molding process. Both ends of the conductive terminal are exposed outside the molding compound unit, and the primary fixing features are symmetrically arranged on the molding compound unit.

[0022] The conductive terminal includes upper row terminals and lower row terminals spaced apart from each other. Both the upper row terminals and the lower row terminals include a plurality of signal terminals and a plurality of ground terminals. A shielding sheet and conductive adhesive are fixed between the upper row terminals and the lower row terminals through the molding compound unit, and the ground terminals are electrically connected to the shielding sheet through the conductive adhesive respectively.

[0023] The secondary fixing feature includes locking holes, locking bars, and locking grooves. The locking holes are respectively opened on both sides of the insulating outer shell and on both sides of the insulating inner shell, and the locking holes on both sides of the insulating outer shell correspond to the locking holes on both sides of the insulating inner shell one by one; the locking grooves are opened on the SSD and located between the locking holes. The secondary TPA fixing mechanism realizes rigid locking of the plug connector and the SSD by inserting the locking bars into the locking grooves and the locking holes simultaneously.

[0024] The connection method between the conductive terminal and the SSD is welding, crimping, or elastic sheet connection.

[0025] The insulating housing is provided with a locking structure for connecting with the socket connector.

[0026] The overmolded composite unit and the insulating inner shell are hermetically encapsulated.

[0027] The insulating inner shell is provided with a positioning structure for mating with the socket connector.

[0028] The positioning structure includes an asymmetric anti-misinsertion key.

[0029] The advantages of adopting the present invention are as follows: 1. The plug connector and the in-vehicle SSD system provided by the present invention adopt an overmolding injection process to combine the conductive terminals and the plastic matrix into an integrated structure, and use the primary fixing features integrated on the overmolded composite unit to form a primary TPA fixing mechanism to effectively fix the conductive terminals and the insulating inner shell. Compared with the prior art, it can not only effectively prevent the conductive terminals from loosening, wearing or failing, but also improve the structural strength and stability reliability of the product, and its durability will not decrease even if it is repeatedly plugged and unplugged.

[0030] In addition, the present invention realizes the rigid fixation of the plug connector and the SSD through the secondary TPA fixing mechanism, which can form an integral structure resistant to vibration and thermal stress, and each component can form a modular structure. This can not only effectively meet the harsh environmental and mechanical requirements of the automotive system, but also facilitate the simplification of the product installation process and reduce the production cost, significantly improving the mechanical strength, electrical reliability and maintenance convenience of the SSD in the in-vehicle environment.

[0031] 2. The present invention integrates the overmolded composite unit and the conductive terminals into an integrated structure by injection molding, which not only helps to improve the stability and reliability of the electrical connection between the conductive terminals and the SSD and the socket connector, but also makes the conductive terminals into replaceable pre-assembled modules, which is conducive to modular adjustment or replacement of the conductive terminals without disassembling the SSD.

[0032] 3. The present invention hermetically encapsulates the overmolded composite unit and the insulating inner shell, which is conducive to making the plug connector reach an IP6K9K or higher dust and waterproof level.

[0033] 4. The present invention is conducive to ensuring the polarization matching of the plug connector and the socket connector through the asymmetric anti-misinsertion key.

[0034] 5. The present invention uses materials with high-temperature resistance, vibration absorption and heat conduction characteristics to prepare the insulating housing and the insulating inner shell, which is conducive to improving the high-temperature resistance, vibration resistance and heat dissipation performance of the plug connector, so that the plug connector can effectively meet the harsh environmental and mechanical requirements of the automotive system.

[0035] 6. The present invention innovatively transforms a standard SSD into an in-vehicle storage solution that meets the IP6K9K protection level, withstands extreme temperatures and vibrations, and is field-maintainable, meeting the stringent requirements of next-generation automotive systems for the high reliability and long life of SSDs.

[0036] 7. The present invention supports the modification of existing SSDs or integration into new designs, and complies with the anti-vibration, thermal cycle, and protection level standards of in-vehicle SSDs. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a three-dimensional structural schematic diagram of a plug connector; Figure 2 is an assembled structural schematic diagram of the plug connector; Figure 3 is a three-dimensional structural schematic diagram of an insulating housing; Figure 4 is Figure 2 an enlarged structural schematic diagram of the conductive terminal in Figure 5 is a three-dimensional structural schematic diagram of an in-vehicle SSD system; Figure 6 is an assembled structural schematic diagram of the in-vehicle SSD system.

[0038] In the figures, the markings are: 1, SSD; 2, conductive terminal; 3, overmolded composite unit; 4, primary fixing feature; 5, insulating inner shell; 6, insulating housing; 7, secondary fixing feature; 8, upper row of terminals; 9, lower row of terminals; 10, shielding sheet; 11, conductive adhesive; 12, locking structure; 13, locking hole; 14, locking bar; 15, locking groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] Embodiment 1 As Figures 1-3 shown, this embodiment discloses a plug connector, which includes: A conductive terminal 2, which is used to electrically connect to the SSD 1 and the socket connector respectively.

[0040] An overmolded composite unit 3, which is overmolded on the conductive terminal 2 and forms an integral structure with the conductive terminal 2. The overmolded composite unit 3 is integrated with a primary fixing feature 4 for locking the position of the conductive terminal 2, so that the conductive terminal 2 can form a replaceable pre-assembled module, facilitating modular adjustment or replacement of the conductive terminal 2 without disassembling the SSD 1.

[0041] Insulating inner shell 5, which is generally square in structure and is configured to accommodate and fix the overmolded composite unit 3. The overmolded composite unit 3 and the insulating inner shell 5 form a primary TPA fixing mechanism through the primary fixing feature 4, and the fixing between the insulating inner shell 5 and the overmolded composite unit 3 is achieved through the primary TPA fixing mechanism. It should be noted that the overmolded composite unit 3 can be inserted into the insulating inner shell 5 from the end of the insulating inner shell 5 for fixing. After fixing, the overmolded composite unit 3 and the insulating inner shell 5 form a sealed package, so as to achieve an IP6K9K or higher dust and waterproof rating.

[0042] Insulating outer shell 6, which is generally square in structure and is configured to encapsulate the insulating inner shell 5. Secondary fixing features 7 for forming a secondary TPA fixing mechanism with the SSD1 are arranged on both the insulating outer shell 6 and the insulating inner shell 5. During actual installation, the insulating inner shell 5 can be inserted into the insulating outer shell 6 from the end of the insulating outer shell 6, and the fixing between the plug connector and the SSD1 can be achieved through the secondary TPA fixing mechanism.

[0043] As Figure 4 shown, in this embodiment, the overmolded composite unit 3 coats the middle part of the conductive terminal 2 with a plastic material through an injection molding process. The overall length of the plastic material is slightly greater than the overall width of the conductive terminal 2. After coating, both ends of the conductive terminal 2 are exposed outside the overmolded composite unit 3, so as to facilitate the formation of stable and reliable connections between the conductive terminal 2 and the SSD1 and the socket connector respectively.

[0044] As Figure 4 shown, further, the conductive terminal 2 includes an upper row of terminals 8 and a lower row of terminals 9 which are spaced apart from each other. Both the upper row of terminals 8 and the lower row of terminals 9 are fixed by being coated with the overmolded composite unit 3. Both the upper row of terminals 8 and the lower row of terminals 9 include a plurality of signal terminals and a plurality of ground terminals. Figure 4 Among them, the ground terminals with longer lengths are on the left side of the overmolded composite unit 3, and the rest are signal terminals. A shielding sheet 10 and a conductive adhesive 11 are also fixed between the upper row of terminals 8 and the lower row of terminals 9 through the overmolded composite unit 3. Two sides of the conductive adhesive 11 are respectively bonded to the shielding sheet 10 and the ground terminals, and each ground terminal is electrically connected to the shielding sheet 10 through the conductive adhesive 11, so as to form a shielding circuit, thereby ensuring stable and reliable transmission of the SSD1 signal.

[0045] As Figures 1-2As shown, in this embodiment, a locking structure 12 for connecting with a socket connector is arranged on the insulating outer shell 6. The locking structure 12 can be realized by conventional technical means in the art to ensure the stable and reliable connection between the plug connector and the socket connector. In addition, a positioning structure for pairing with the socket connector is arranged on the insulating inner shell 5. The positioning structure includes an asymmetric anti-fooling key to ensure the polarized pairing with the socket connector. During actual installation, by inserting the plug connector into the socket connector and then using the locking structure 12 to lock and the asymmetric anti-fooling key for polarized pairing, the stable and reliable connection between the two can be ensured.

[0046] In this embodiment, both the insulating outer shell 6 and the insulating inner shell 5 are made of materials with high-temperature resistance characteristics, vibration absorption characteristics, and heat conduction characteristics, so that the plug connector has high-temperature resistance characteristics, vibration absorption characteristics, and heat dissipation characteristics, and thus can adapt to the harsh environment and mechanical requirements in various vehicle-mounted working conditions.

[0047] It should be noted that this embodiment does not limit the primary fixing feature 4 and the secondary fixing feature 7, as long as they can form a corresponding TPA fixing mechanism and realize the effective fixing of the corresponding structural members.

[0048] When this embodiment is in use, first, a plastic material is coated on the middle part of the conductive terminal 2 by an injection molding process to form an integrated structure of the conductive terminal 2. Then, the conductive terminal 2 is integrally inserted into the insulating inner shell 5, and the reliable fixing of the overmolded composite unit 3 and the insulating inner shell 5 is realized by using the primary TPA fixing mechanism. Then, the insulating inner shell 5 is integrally inserted into the insulating inner shell 5 to form a complete plug connector. Finally, the rigid locking of the insulating outer shell 6, the insulating inner shell 5, and the SSD1 is realized by using the secondary TPA fixing mechanism. Each component of the plug connector provided in this embodiment can form a modular structure, which not only simplifies the installation and reduces the cost, but also effectively enhances the mechanical strength, electrical reliability, and compliance with vehicle-mounted environmental standards of the SSD1.

[0049] In addition, the applicant also conducted plug and unplug tests on this embodiment. The plug connector provided in this embodiment and the SSD1 are used to form a unit that can be maintained on-site. After the plug and unplug test, it can maintain no performance attenuation after at least 10,000 plug and unplug cycles, which proves that the plug connector can not only effectively prevent the conductive terminal 2 from loosening, wearing, or failing, but also improve the structural strength and stability reliability of the product.

[0050] Embodiment 2 On the basis of Embodiment 1, this embodiment further optimizes the primary fixing feature 4.

[0051] As Figure 2 、 4As shown, the primary fixing features 4 are symmetrically arranged on the overmolded composite unit 3. The primary fixing features 4 specifically include snap locks, ribs or grooves. Correspondingly, the insulating inner housing 5 is configured with engaging structures adapted to the snap locks, ribs or grooves. After inserting the overmolded composite unit 3 and the conductive terminals 2 into the insulating inner housing 5, the primary TPA fixing mechanism locks the position of the conductive terminals 2 by engaging the corresponding structures in the insulating inner housing 5 through the snap locks, ribs or grooves, which is convenient for disassembly and assembly and can effectively prevent the conductive terminals 2 from loosening.

[0052] It should be noted that the above primary fixing features 4 are preferably arranged on the upper and lower sides of the overmolded composite unit 3, but according to needs, they can also be arranged at the left and right ends of the overmolded composite unit 3.

[0053] Embodiment 3 Based on Embodiment 1 or 2, this embodiment further optimizes the secondary fixing features 7.

[0054] As Figures 1-3 shown, the secondary fixing features 7 include locking holes 13 and locking bars 14. The locking holes 13 are respectively opened on both sides of the insulating outer housing 6 and on both sides of the insulating inner housing 5, and the locking holes 13 on both sides of the insulating outer housing 6 respectively correspond to the locking holes 13 on both sides of the insulating inner housing 5 one by one. The secondary fixing features 7 need to be pre-opened on the SSD1 with locking slots 15 adapted to the locking bars 14 for cooperation to achieve fixation. Based on this, the secondary TPA fixing mechanism can achieve rigid locking of the insulating outer housing 6, the insulating inner housing 5 and the SSD1 by inserting the locking bars 14 into the locking slots 15 and the locking holes 13 simultaneously.

[0055] To further improve the rigid locking effect between the plug connector and the SSD1, it is preferred that the number of locking holes 13 on each side of the insulating outer housing 6 is two, and the locking holes 13 on both sides are symmetrical. Correspondingly, the number of locking holes 13 on each side of the insulating inner housing 5 is two, and the locking holes 13 on both sides are symmetrical; the number of locking slots 15 on the SSD1 is also two, and they are respectively opened on the upper and lower surfaces of the SSD1; the number of locking bars 14 is also two, which are used to be inserted into the corresponding locking holes 13 and locking slots 15 respectively.

[0056] In this embodiment, through the cooperation of the primary TPA fixing mechanism and the secondary TPA fixing mechanism, when the SSD1 is applied to vehicle-mounted working conditions, it can ensure that it meets the vehicle-mounted standards of anti-vibration, thermal cycle and protection level.

[0057] Embodiment 4 As Figures 5-6 shown, this embodiment discloses a vehicle-mounted SSD system, including a plug connector and an SSD1. Among them, the plug connector includes: The conductive terminal 2 is used to electrically connect to the SSD1 and the socket connector respectively.

[0058] The overmolding composite unit 3 is overmolded on the conductive terminal 2 and forms an integrated structure with the conductive terminal 2. A primary fixing feature 4 for locking the position of the conductive terminal 2 is integrated on the overmolding composite unit 3, so that the conductive terminal 2 can form a replaceable pre-assembled module, facilitating modular adjustment or replacement of the conductive terminal 2 without disassembling the SSD1.

[0059] The insulating inner shell 5 is generally square in structure and is configured to accommodate and fix the overmolding composite unit 3. The overmolding composite unit 3 and the insulating inner shell 5 form a primary TPA fixing mechanism through the primary fixing feature 4, and the fixing between the insulating inner shell 5 and the overmolding composite unit 3 is achieved through the primary TPA fixing mechanism. It should be noted that the overmolding composite unit 3 can be inserted into the insulating inner shell 5 from the end of the insulating inner shell 5 for fixing. After fixing, the overmolding composite unit 3 and the insulating inner shell 5 form a sealed package, so as to achieve an IP6K9K or higher dust and waterproof rating.

[0060] The insulating outer shell 6 is generally square in structure and is configured to encapsulate the insulating inner shell 5. The insulating inner shell 5 can be inserted into the insulating outer shell 5 from the end of the insulating outer shell 6.

[0061] In addition, secondary fixing features 7 are configured on both the plug connector and the SSD1. The plug connector and the SSD1 form a secondary TPA fixing mechanism through the secondary fixing features 7 to achieve rigid locking between the plug connector and the SSD1.

[0062] As Figure 4 shown, in this embodiment, the overmolding composite unit 3 coats the plastic material on the middle part of the conductive terminal 2 through an injection molding process. The overall length of the plastic material is slightly greater than the overall width of the conductive terminal 2. After coating, both ends of the conductive terminal 2 are exposed outside the overmolding composite unit 3, so as to facilitate the formation of stable and reliable connections between the conductive terminal 2 and the SSD1 and the socket connector respectively.

[0063] As Figure 4 shown, further, the conductive terminal 2 includes an upper row of terminals 8 and a lower row of terminals 9 that are spaced apart from each other. Both the upper row of terminals 8 and the lower row of terminals 9 are coated and fixed by the overmolding composite unit 3. Both the upper row of terminals 8 and the lower row of terminals 9 include a plurality of signal terminals and a plurality of ground terminals. Figure 4Among the middle overmolding composite units 3 on the left side, the one with a longer length is the grounding terminal, and the rest are signal terminals. Between the upper row of terminals 8 and the lower row of terminals 9, a shielding sheet 10 and a conductive adhesive 11 are also fixed through the middle overmolding composite unit 3. The two sides of the conductive adhesive 11 are respectively adhered to the shielding sheet 10 and the grounding terminal. Each grounding terminal is electrically connected to the shielding sheet 10 through the conductive adhesive 11, thereby forming a shielding circuit to ensure the stable and reliable transmission of the signal of the SSD1. In addition, Figure 4 The terminals on the right side of the middle overmolding composite unit 3 are used for electrical connection with the SSD1. The specific connection method can be welding, crimping or other known connection structures. On the premise that the plug connector can maintain a reliable connection with the SSD1, it can effectively prevent the conductive terminals 2 from loosening, wearing or failing.

[0064] As Figure 6 shown, in this embodiment, a locking structure 12 for connecting with a socket connector is configured on the insulating outer shell 6. The locking structure 12 can be realized by using conventional technical means in the art to ensure the stable and reliable connection between the plug connector and the socket connector. In addition, a positioning structure for pairing with the socket connector is configured on the insulating inner shell 5. The positioning structure includes an asymmetric anti-fooling key to ensure the polarization pairing with the socket connector. During actual installation, by inserting the plug connector into the socket connector and then using the locking structure 12 to lock and the asymmetric anti-fooling key for polarization pairing, the stable and reliable connection between the two can be ensured.

[0065] In this embodiment, both the insulating outer shell 6 and the insulating inner shell 5 are made of materials with high-temperature resistance characteristics, vibration absorption characteristics and heat conduction characteristics, so that the plug connector has high-temperature resistance characteristics, vibration absorption characteristics and heat dissipation characteristics, and can thus adapt to the harsh environment and mechanical requirements in various vehicle-mounted working conditions.

[0066] When this embodiment is in use, first, a plastic material is overmolded on the middle part of the conductive terminal 2 by an injection molding process to form an integrated structure of the conductive terminal 2. Then, the entire conductive terminal 2 is inserted into the insulating inner shell 5, and the reliable fixation of the overmolding composite unit 3 and the insulating inner shell 5 is realized by using the primary TPA fixing mechanism. Then, the insulating inner shell 5 is integrally inserted into the insulating inner shell 5 to form a complete plug connector. Then, the end of the SSD1 is inserted into the plug connector, and the conductive terminal 2 is electrically connected to the SSD1. Finally, the rigid locking of the insulating outer shell 6, the insulating inner shell 5 and the SSD1 is realized by using the secondary TPA fixing mechanism. Each component of the vehicle-mounted SSD system provided by this embodiment can form a modular structure, which not only simplifies the installation and reduces the cost, but also effectively enhances the mechanical strength, electrical reliability and compliance with vehicle-mounted environmental standards of the SSD1.

[0067] Embodiment 5 Based on Embodiment 4, in this embodiment, the primary fixing feature 4 is further optimized.

[0068] As Figure 4 , 6 shown, the primary fixing feature 4 is symmetrically arranged on the overmolded composite unit 3. The primary fixing feature 4 specifically includes snap locks, ribs or grooves. Correspondingly, the insulating inner shell 5 is configured with meshing structures adapted to the snap locks, ribs or grooves. After inserting the overmolded composite unit 3 and the conductive terminal 2 into the insulating inner shell 5, the primary TPA fixing mechanism realizes the position locking of the conductive terminal 2 through the meshing of the snap locks, ribs or grooves with the corresponding structures in the insulating inner shell 5, which is convenient for disassembly and assembly and can effectively prevent the conductive terminal 2 from loosening.

[0069] It should be noted that the above primary fixing feature 4 is preferably arranged on the upper and lower sides of the overmolded composite unit 3, but according to needs, it can also be arranged at the left and right ends of the overmolded composite unit 3.

[0070] Embodiment 6 Based on Embodiment 4 or 5, in this embodiment, the secondary fixing feature 7 is further optimized.

[0071] As Figures 1-3 shown, the secondary fixing feature 7 includes locking holes 13, locking bars 14 and locking grooves 15. The locking holes 13 are respectively opened on both sides of the insulating outer shell 6 and on both sides of the insulating inner shell 5, and the locking holes 13 on both sides of the insulating outer shell 6 correspond to the locking holes 13 on both sides of the insulating inner shell 5 one by one. The locking grooves 15 are opened on the SSD1 and are located between the locking holes 13. The secondary TPA fixing mechanism realizes the rigid locking of the plug connector and the SSD1 by inserting the locking bars 14 into the locking grooves 15 and the locking holes 13 simultaneously.

[0072] To further improve the rigid locking effect between the plug connector and the SSD1, it is preferred that the number of locking holes 13 on each side of the insulating outer shell 6 is two, and the locking holes 13 on both sides are symmetrical. Correspondingly, the number of locking holes 13 on each side of the insulating inner shell 5 is two, and the locking holes 13 on both sides are symmetrical; the number of locking grooves 15 on the SSD1 is also two, and they are respectively opened on the upper and lower surfaces of the SSD1; the number of locking bars 14 is also two, which are used to be inserted into the corresponding locking holes 13 and locking grooves 15 respectively.

[0073] In this embodiment, the rigid locking of the plug connector and the SSD1 is achieved through the cooperation of the primary TPA fixing mechanism and the secondary TPA fixing mechanism. When the SSD1 is applied to vehicle-mounted working conditions, it can ensure that it meets the vehicle-mounted standards of anti-vibration, thermal cycle and protection level.

[0074] The above are only specific embodiments of the present invention. Any feature disclosed in this specification, unless specifically described, can be replaced by other equivalent or similar-purpose alternative features; all the disclosed features, or all the steps in any method or process, except for mutually exclusive features and / or steps, can be combined in any manner.

Claims

1. A plug connector, characterized in that: include: A conductive terminal (2) for electrically connecting to the SSD (1); An overmolded composite unit (3) is overmolded onto the conductive terminal (2) to form an integrated structure, the overmolded composite unit (3) being integrated with a primary fixing feature (4) for locking the conductive terminal (2) in position; an insulating inner shell (5) configured to accommodate and fix the overmolded composite unit (3), wherein the overmolded composite unit (3) forms a primary TPA fixing mechanism with the insulating inner shell (5) via a primary fixing feature (4); The insulating outer shell (6) is configured to encapsulate the insulating inner shell (5), wherein the insulating outer shell (6) and the insulating inner shell (5) are both provided with secondary fixing features (7) for forming a secondary TPA fixing mechanism with the SSD (1).

2. A plug connector according to claim 1, characterized in that: The primary fixing feature (4) comprises a snap lock, a rib or a groove, and the primary TPA fixing mechanism achieves position locking of the conductive terminal (2) by engaging the primary fixing feature (4) with a corresponding structure of the insulating inner shell (5).

3. The plug connector according to claim 1, characterized in that: The overmolded composite unit (3) is formed by coating a plastic material on the middle portion of the conductive terminal (2) through an injection molding process, both ends of the conductive terminal (2) are exposed outside the overmolded composite unit (3), and the primary fixing feature (4) is symmetrically arranged on the overmolded composite unit (3).

4. The plug connector according to claim 1, characterized in that: The conductive terminals (2) include an upper row of terminals (8) and a lower row of terminals (9) spaced apart from each other, the upper row of terminals (8) and the lower row of terminals (9) each including a plurality of signal terminals and a plurality of grounding terminals, a shielding sheet (10) and a conductive adhesive (11) are fixed between the upper row of terminals (8) and the lower row of terminals (9) via the overmolded composite unit (3), and the grounding terminals are electrically connected to the shielding sheet (10) via the conductive adhesive (11).

5. A plug connector according to any one of claims 1 to 4, characterized in that: The secondary fixing feature (7) comprises a locking hole (13) and a locking bar (14), wherein the locking holes (13) are respectively provided on both sides of the insulating outer shell (6) and respectively provided on both sides of the insulating inner shell (5), and the locking holes (13) on both sides of the insulating outer shell (6) correspond one-to-one to the locking holes (13) on both sides of the insulating inner shell (5); a locking groove (15) is provided on the SSD (1), and the secondary TPA fixing mechanism achieves rigid locking of the insulating outer shell (6), the insulating inner shell (5) and the SSD (1) by simultaneously inserting the locking bar (14) into the locking groove (15) and the locking hole (13).

6. The plug connector according to claim 1, characterized in that: The insulating housing (6) is provided with a locking structure (12) for connecting with the socket connector.

7. The plug connector according to claim 1, characterized in that: The overmolded composite unit (3) and the insulating inner shell (5) are sealed and packaged.

8. The plug connector according to claim 1, characterized in that: The insulating inner shell (5) is provided with a positioning structure for mating with the socket connector; the positioning structure comprises an asymmetric foolproof key.

9. The plug connector according to claim 1, characterized in that: The insulating outer shell (6) and the insulating inner shell (5) are both made of materials having high temperature resistance, vibration absorption and heat conduction properties.

10. An in-vehicle SSD system, comprising a plug connector and an SSD (1), characterized in that: The plug connector comprises: A conductive terminal (2) electrically connected to the SSD (1); An overmolded composite unit (3) is overmolded onto the conductive terminal (2) to form an integrated structure, the overmolded composite unit (3) being integrated with a primary fixing feature (4) for locking the conductive terminal (2) in position; an insulating inner shell (5) configured to accommodate and fix the overmolded composite unit (3), wherein the overmolded composite unit (3) forms a primary TPA fixing mechanism with the insulating inner shell (5) via a primary fixing feature (4); An insulating outer shell (6) configured to encapsulate the insulating inner shell (5); The plug connector and the SSD (1) are both provided with secondary fixing features (7), and a secondary TPA fixing mechanism is formed between the plug connector and the SSD (1) through the secondary fixing features (7) to achieve rigid locking of the plug connector and the SSD (1).

11. The vehicle-mounted SSD system according to claim 10, characterized in that: The secondary fixing feature (7) comprises a locking hole (13), a locking bar (14) and a locking groove (15); the locking holes (13) are respectively arranged on both sides of the insulating outer shell (6) and respectively arranged on both sides of the insulating inner shell (5); and the locking holes (13) on both sides of the insulating outer shell (6) correspond one-to-one to the locking holes (13) on both sides of the insulating inner shell (5); the locking groove (15) is arranged on the SSD (1) and is located between the locking holes (13); the secondary TPA fixing mechanism realizes the rigid locking of the plug connector and the SSD (1) by simultaneously inserting the locking bar (14) into the locking groove (15) and the locking hole (13).

12. The vehicle-mounted SSD system according to claim 10, characterized in that: The conductive terminal (2) is connected to the SSD (1) by welding, crimping or spring-clip connection.

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