Electrical connector and electrical connector assembly

Abstract

An electrical connector and an electrical connector assembly are described herein. The electrical connector includes a conductive terminal, an insulative terminal housing configured to at least partially house the terminal, and a molded housing configured to at least partially house the terminal housing. The electrical connector further includes a first seal disposed on the terminal and a second seal disposed on the terminal housing. The terminal is configured to be inserted into position within the terminal housing in response to the first seal being disposed on the terminal, and the first seal is compression sealed between the terminal and the terminal housing. The terminal housing is configured to be inserted into position within the molded housing in response to the second seal being disposed on the terminal housing, and the second seal is compression sealed between the terminal housing and the molded housing.

Description

Technical Field

[0001] The embodiments of this disclosure generally relate to the technical field of conductive connectors, and more specifically, to an electrical connector and an electrical connector assembly. Background Technology

[0002] Electrical connector assemblies are electronic components used for the transmission and exchange of current or signals between devices in electronic systems. As nodes, electrical connector assemblies, either independently or together with cables, transmit current or signals between devices, components, equipment, and systems, ensuring that signal distortion and energy loss do not occur between systems. They are essential basic components for forming the connection of the entire complete system. For example, I / O modules are typically used for connections between switches, and between switches and servers.

[0003] In existing technologies, particularly those concerning the application of electrical connectors in transmission inverters, conventional electrical connector assemblies typically feature a 90-degree bend or a 180-degree straight-out wire exit configuration. On one hand, 90-degree or 180-degree electrical connectors used in high-voltage inverter circuits in environments containing ATF (automatic transmission fluid) typically need to withstand high voltage and / or high current (and consequently high operating temperatures), high vibration, and require self-sealing. Such applications place extremely stringent performance demands on the products. On the other hand, current 90-degree or 180-degree electrical connectors for low-voltage applications generally lack excellent self-sealing properties, making them prone to ATF leakage. Furthermore, similar connector designs typically employ potting compound materials for sealing rather than a monolithic sealing structure, leading to drawbacks such as high cost and insufficient performance guarantees.

[0004] Therefore, there is an urgent need in the existing technology for an improved 90-degree electrical connector and its components, achieved through improvements in the assembly structure. For example, a modular, coaxial, radially filled, self-sealing design based on existing processes could be suitable for high-voltage environments, meeting testing requirements such as high vibration and high current, and applicable to inverter applications with high-voltage circuits containing ATF oil. Furthermore, the modular design facilitates cost reduction and expands the market application areas for electrical connectors. Summary of the Invention

[0005] The purpose of this disclosure is to solve at least one aspect of the aforementioned problems and defects in the prior art by providing an electrical connector and its components with a simple structure.

[0006] To achieve the above objectives, this disclosure provides the following technical solution:

[0007] In a first aspect of this disclosure, an electrical connector is provided, comprising: a conductive terminal; an insulating terminal housing configured to at least partially receive the terminal; and a molded housing configured to at least partially receive the terminal housing. The electrical connector further comprises: a first seal disposed on the terminal; and a second seal disposed on the terminal housing. The terminal is configured to be axially inserted into the terminal housing in response to the first seal being disposed on the terminal, and the first seal is press-sealed between the terminal and the terminal housing. Furthermore, the terminal housing is configured to be inserted into the molded housing in response to the second seal being disposed on the terminal housing, and the second seal is press-sealed between the terminal housing and the molded housing.

[0008] In an exemplary embodiment, the terminal housing has a circumferential columnar wall defining a hollow axial space open at both ends, and the terminal is at least partially accommodated in the space defined by its first circumferential inner surface; and the die-cast shell is hollow, and the terminal housing is at least partially accommodated in the space defined by its second circumferential inner surface.

[0009] In an exemplary embodiment, the terminal has an annular first circumferential groove formed on a first circumferential outer surface of the terminal facing the first circumferential inner surface of the terminal housing, and the first seal is configured to press and seal radially between the first circumferential outer surface of the terminal and the first circumferential inner surface of the terminal housing when engaged with the first circumferential groove; and the terminal housing has an annular second circumferential groove formed on a second circumferential outer surface of the terminal housing facing the second circumferential inner surface of the molded housing, and the second seal is configured to press and seal radially between the second circumferential outer surface of the terminal housing and the second circumferential inner surface of the molded housing when engaged with the second circumferential groove.

[0010] In an exemplary embodiment, the first circumferential groove and the second circumferential groove are arranged coaxially with each other. And / or, in an exemplary embodiment, the first seal and the second seal are arranged coaxially with each other.

[0011] In an exemplary embodiment, the terminal includes: a first segment extending through the terminal housing and exposed from the terminal housing into the molded housing; a second segment inserted into the terminal housing; and a third segment located at the opposite end to the first segment and exposed from the terminal housing.

[0012] In an exemplary embodiment, the first circumferential groove is formed in the portion of the second segment adjacent to the third segment, and has a cross section that is radially narrower than the third segment.

[0013] In a typical exemplary embodiment, the terminal has a pair of first flat surfaces formed on a portion of the second segment that is opposite to the third segment and spaced apart from the first circumferential groove, the pair of first flat surfaces extending axially and facing each other radially; and the interior of the terminal housing has a pair of flat tops that protrude radially inward from the first circumferential inner surface and face each other radially, the pair of flat tops being adapted to press against the pair of first flat surfaces respectively.

[0014] In a further exemplary embodiment, the pair of flat tops are formed with axially parallel straight protrusions for frictional contact with the pair of first flat surfaces, and the pair of flat tops and the pair of first flat surfaces are configured to cooperate with each other using the frictional contact to perform axial alignment and axial guidance of the movement of the terminal into the terminal housing.

[0015] In a further exemplary embodiment, the terminal housing further includes a protrusion extending radially inward from the first circumferential inner surface of the terminal housing and arranged at least partially circumferentially, and the terminal further includes an annular third circumferential groove formed between the first segment and the second segment, adapted to receive the protrusion; and the terminal is inserted into the terminal housing and positioned by the protrusion being engaged into the third circumferential groove in response to the axial insertion of the terminal into the terminal housing.

[0016] In an alternative exemplary embodiment, the terminal housing further includes a radial ridge extending inward from the circumferential columnar wall, and a plurality of cantilever members extending axially toward the third segment from an annular end face of the radial ridge opposite to the molded shell, the plurality of cantilever members being circumferentially spaced from each other and capable of flexing radially inward, respectively.

[0017] In a further exemplary embodiment, the terminal also includes a circumferential engagement groove formed on the second segment between the first circumferential groove and the third segment, which is adapted to rub against the respective free ends of the plurality of cantilever members.

[0018] In a further exemplary embodiment, the terminal is inserted into the terminal housing by the plurality of cantilever members rubbing against and pressing against the inner wall of the circumferential engagement groove of the second section with their respective free ends in response to the axial insertion of the terminal into the terminal housing.

[0019] In an exemplary embodiment, each cantilever member has an inverted T-shaped cross section that runs radially inward.

[0020] In an exemplary embodiment, the terminal housing further includes a first tab extending axially from a portion of a circumferential edge of the terminal housing opposite to the terminal, the first tab having a fan-shaped cross-section.

[0021] In an exemplary embodiment, the molded shell further comprises: two first limiting features that protrude radially inward from the second circumferential inner surface and are circumferentially spaced apart from each other, the two first limiting features being adapted to hold and limit the first protrusion therebetween in the circumferential direction and configured to cooperate in guiding the first protrusion axially into the molded shell and acting as circumferential limiting members to overcome circumferential rotation of the first protrusion; and a second limiting feature that protrudes radially inward from the inner side of the molded shell and is arranged at least partially circumferentially and located at the distal end of the two first limiting features opposite to the terminal, the second limiting feature acting as an axial stop for the first protrusion axially into the molded shell.

[0022] In an exemplary embodiment, the terminal housing is inserted into the molded shell and positioned in response to the axial insertion of the terminal housing into the molded shell by the first tab engaging between the two first limiting features until blocked by the second limiting feature.

[0023] In an exemplary embodiment, the terminal housing further includes a second tab extending axially from a portion of a circumferential edge of the terminal housing opposite to the terminal, the second tab being radially opposed to the first tab and having a fan-shaped cross-section.

[0024] In an exemplary embodiment, the molded shell further includes an axial groove that is partially recessed radially from the second circumferential inner surface. The axial groove extends axially away from the terminal shell from a circumferential edge of the molded shell at one end facing the terminal shell, and the axial groove is adapted to receive the second tab.

[0025] In an exemplary embodiment, the electrical connector further includes at least one high-voltage interlock terminal, which is arranged to extend through a channel embedded in a portion of the circumferential edge of the second tab and aligned axially with the second tab.

[0026] In an exemplary embodiment, the electrical connector further includes at least one third seal, each third seal being fitted onto a corresponding high-voltage interlock terminal and pressed and sealed between the outer surface of the corresponding high-voltage interlock terminal and the inner surface of the channel.

[0027] In an exemplary embodiment, the second tab extends axially away from the terminal in a shorter length than the first tab.

[0028] In an exemplary embodiment, the terminal housing further includes a radially outwardly extending boss located between one end of the terminal housing opposite to the molded shell and the second circumferential groove, and the boss is axially aligned with the first protrusion.

[0029] In a second aspect of this disclosure, an electrical connector assembly is provided, the electrical connector assembly comprising at least two electrical connectors according to the foregoing, wherein the respective molded housings of the at least two electrical connectors are integrally formed together. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form part of this specification, illustrate certain aspects of the subject matter disclosed herein and, together with the description, help to explain some principles associated with the disclosed embodiments. In the drawings:

[0031] Figure 1A and Figure 1B The figures show a schematic perspective view and a schematic exploded view of an exemplary 180-degree electrical connector according to an embodiment of the present disclosure.

[0032] Figure 2A and Figure 2B The figures show a schematic perspective view and a schematic exploded view of an exemplary 90-degree electrical connector according to another embodiment of the present disclosure.

[0033] Figure 3 As shown in the diagram Figure 1A and Figure 1B A schematic perspective view of the terminals in a 180-degree electrical connector.

[0034] Figures 4A to 4C The diagrams are shown below. Figure 1A and Figure 1B A schematic perspective view of the terminal housing in the 180-degree electrical connector from different angles.

[0035] Figure 5A and Figure 5B As shown in the diagram Figure 1A and Figure 1B Schematic perspective views of the molded housing in the 180-degree electrical connector from different angles.

[0036] Figure 6 As shown in the diagram Figure 2A and Figure 2B A schematic perspective view of the terminals in a 90-degree electrical connector.

[0037] Figures 7A to 7C The diagrams are shown below. Figure 2A and Figure 2B A schematic perspective view of the terminal housing in the 90-degree electrical connector from different angles.

[0038] Figure 8A and Figure 8B As shown in the diagram Figure 2A and Figure 2B Schematic perspective views of the die-cast housing in the 90-degree electrical connector from different angles.

[0039] Figure 9A and Figure 9B The figures show a schematic perspective view and a schematic exploded view of a 180-degree electrical connector assembly according to an exemplary embodiment of the present disclosure.

[0040] Figure 10A and Figure 10B The figures show a schematic perspective view and a schematic exploded view of a 90-degree electrical connector assembly according to another exemplary embodiment of the present disclosure. Detailed Implementation

[0041] This disclosure will now be described in detail with reference to the accompanying drawings, which are provided as illustrative examples to enable those skilled in the art to practice this disclosure. It is important to note that the following drawings and examples are not intended to limit the scope of this disclosure to a single embodiment, but rather to enable other embodiments by means of interchange of some or all of the described or illustrated elements. Furthermore, where certain elements of this disclosure can be implemented using known components in part or entirely, only those portions of such known components necessary for understanding this disclosure will be described, and detailed descriptions of other portions of such known components will be omitted so as not to obscure this disclosure. Unless otherwise stated herein, it will be understood by those skilled in the art that embodiments described as being implemented in software are not intended to be limited to this, but may include embodiments implemented in hardware or a combination of software and hardware, and vice versa. Embodiments showing a singular number of components in this specification should not be considered limiting; rather, unless expressly stated otherwise herein, this disclosure is intended to cover other embodiments including a plurality of identical components, and vice versa. Furthermore, the applicant does not intend for any terminology in this specification or claims to be relegated to an uncommon or particular meaning unless so expressly stated. In addition, this disclosure covers current and future known equivalents of known components mentioned herein with the aid of illustrations.

[0042] Unless otherwise specified, the terms "bottom" and "top," "upper" and "lower," etc., used in this disclosure are relative concepts. Furthermore, the terms "corresponding" or "corresponding" in this disclosure refer to the correspondence between paired, collaboratively working components.

[0043] Figure 1A and Figure 1B The figures show a schematic perspective view and a schematic exploded view of an exemplary 180-degree electrical connector according to an embodiment of the present disclosure. Figure 2A and Figure 2B The figures show a schematic perspective view and a schematic exploded view of an exemplary 90-degree electrical connector according to another embodiment of the present disclosure.

[0044] In one aspect of this disclosure, according to a general technical concept, an electrical connector is provided, comprising: a conductive terminal; an insulating terminal housing configured to at least partially accommodate the terminal; and a molded housing configured to at least partially accommodate the terminal housing. The electrical connector further comprises: a first seal disposed on the terminal; and a second seal disposed on the terminal housing. The terminal is configured to be axially inserted into the terminal housing in response to the first seal being disposed on the terminal, and the first seal is press-sealed between the terminal and the terminal housing. Furthermore, the terminal housing is configured to be inserted into the molded housing in response to the second seal being disposed on the terminal housing, and the second seal is press-sealed between the terminal housing and the molded housing.

[0045] As a specific exemplary embodiment, for example, Figure 1A and Figure 1B As shown, an exemplary 180-degree electrical connector 1 is provided, comprising: a conductive terminal 10; an insulating terminal housing 20 configured to at least partially accommodate the terminal 10; and a molded housing 30 configured to at least partially accommodate the terminal housing 20. The electrical connector 1 further comprises: a first seal 41 sleeved on the terminal 10; and a second seal 42 sleeved on the terminal housing 20. The terminal 10 is configured to be axially inserted into the terminal housing 20 in response to the first seal 41 being sleeved on the terminal 10, and the first seal 41 is press-sealed between the terminal 10 and the terminal housing 20. Furthermore, the terminal housing 20 is configured to be inserted into the molded housing 30 in response to the second seal 42 being sleeved on the terminal housing 20, and the second seal 42 is press-sealed between the terminal housing 20 and the molded housing 30.

[0046] As an alternative exemplary embodiment, for example, Figure 2A and Figure 2BAs shown, an exemplary 90-degree electrical connector 1 is provided, comprising: a conductive terminal 50; an insulating terminal housing 60 configured to at least partially accommodate the terminal 50; and a molded housing 70 configured to at least partially accommodate the terminal housing 60. The electrical connector 1 further comprises: a first seal 81 sleeved on the terminal 50; and a second seal 82 sleeved on the terminal housing 60. The terminal 50 is configured to be axially inserted into the terminal housing 60 in response to the first seal 81 being sleeved on the terminal 50, and the first seal 81 is press-sealed between the terminal 50 and the terminal housing 60. Furthermore, the terminal housing 60 is configured to be inserted into the molded housing 70 in response to the second seal 82 being sleeved on the terminal housing 60, and the second seal 82 is press-sealed between the terminal housing 60 and the molded housing 70.

[0047] Therefore, based on this configuration, in electrical connectors such as 90-degree and 180-degree connectors where terminals, terminal housings, and molded housings are arranged sequentially from the inside out, a first seal fitted on the innermost terminal presses against and seals the terminal and terminal housing; subsequently, a second seal fitted on the middle terminal housing presses against and seals the terminal and molded housing. This facilitates superior self-sealing performance in such connectors, and allows them to withstand high voltage and / or high current and the resulting high operating temperatures, avoiding ATF oil leakage and the problem of ATF oil's intolerance to high temperatures. Furthermore, the self-sealing of this type of connector, achieved using existing processes, can essentially be considered an integral sealing structure, effectively controlling costs while ensuring sealing performance, and eliminating the need for potting compound materials. Additionally, it facilitates vibration reduction and / or vibration isolation of the connector in high-vibration operating environments.

[0048] According to an exemplary embodiment of the present disclosure, for example, the terminal housing has a circumferential columnar wall defining a hollow axial space open at both ends, and the terminal is at least partially accommodated by the space defined by its first circumferential inner surface; and the die-cast shell is hollow, and the terminal housing is at least partially accommodated by the space defined by its second circumferential inner surface.

[0049] As a specific exemplary embodiment, for example, Figure 1B As shown, the terminal housing 20 has a circumferential columnar wall 23 defining a hollow axial space 22 open at both ends, thereby the terminal housing 20 is hollow columnar and at least partially accommodates the terminal 10 in the space defined by its first circumferential inner surface 201; and the molded shell 30 is hollow and at least partially accommodates the terminal housing 20 in the space defined by its second circumferential inner surface 301.

[0050] As an alternative exemplary embodiment, for example, Figure 2B As shown, the terminal housing 60 has a circumferential columnar wall 63 defining a hollow axial space 62 open at both ends, thereby the terminal housing 60 is hollow columnar and at least partially accommodates the terminal 50 in the space defined by its first circumferential inner surface 601; and the molded shell 70 is hollow and at least partially accommodates the terminal housing 60 in the space defined by its second circumferential inner surface 701. More specifically, for example, the molded shell 70 itself comprises two orthogonal and interconnected portions, namely a hollow first molded shell 70 segment extending vertically parallel to the axial direction and a hollow second molded shell 70 segment extending laterally perpendicular to the vertical direction. Furthermore, the mold can at least partially accommodate the terminal shell 60 using a portion of the space defined by the inner surface area of ​​its second circumferential inner surface 701 within both the first and second molded shell 70 segments (more specifically, for example, the portion of the space defined by the entire inner surface area within the first molded shell 70 segment and a portion of the inner surface area within the second molded shell 70 segment, respectively).

[0051] Through such Figure 1B For 180-degree electrical connectors and such Figure 2B For a 90-degree electrical connector, an integrated housing structure with a multi-layered annular stacked arrangement of terminals, terminal housings, and molded housings from the inside out is achieved.

[0052] Figure 3 As shown in the diagram Figure 1A and Figure 1B A schematic perspective view of the terminals in a 180-degree electrical connector. Figures 4A to 4C The diagrams are shown below. Figure 1A and Figure 1B A schematic perspective view of the terminal housing in the 180-degree electrical connector from different angles. Figure 5A and Figure 5B As shown in the diagram Figure 1A and Figure 1B Schematic perspective views of the molded housing in the 180-degree electrical connector from different angles.

[0053] According to exemplary embodiments of this disclosure, such as Figure 3 and Figures 4A to 4CAs shown, for example, the terminal 10 has an annular first circumferential groove 102 formed on a first circumferential outer surface 101 of the terminal 10 facing the first circumferential inner surface 201 of the terminal housing 20, and the first seal 41 is configured to fill the first annular gap between the first circumferential outer surface 101 and the first circumferential inner surface 201 in the radial direction by pressing and sealing it between the first circumferential outer surface 101 of the terminal 10 and the first circumferential inner surface 201 of the terminal housing 20 when it is snapped into the first circumferential groove 102. Furthermore, according to an exemplary embodiment of this disclosure, as... Figures 4A to 4C and Figures 5A to 5B As shown, for example, the terminal housing 20 has an annular second circumferential groove 203 formed on the second circumferential outer surface 202 of the terminal housing 20 facing the second circumferential inner surface 301 of the molded housing 30, and the second seal 42 is configured to fill the second annular gap between the second circumferential outer surface 202 and the second circumferential inner surface 301 in the radial direction by pressing and sealing it between the second circumferential outer surface 202 of the terminal housing 20 and the second circumferential inner surface 301 of the molded housing 30 when it is snapped into the second circumferential groove 203. Thus, with this arrangement, based on a modular assembly structure, a radially filled integral self-sealing design for the 90-degree electrical connector 1 is achieved, effectively avoiding phenomena such as leakage and impacts on the electrical connection.

[0054] In a further embodiment, as an example, the first circumferential groove 102 and the second circumferential groove 203 are arranged coaxially with each other. And / or, further still, for example, the first seal 41 and the second seal 42 are arranged coaxially with each other.

[0055] Figure 6 As shown in the diagram Figure 2A and Figure 2B A schematic perspective view of the terminals in a 90-degree electrical connector. Figures 7A to 7C The diagrams are shown below. Figure 2A and Figure 2B A schematic perspective view of the terminal housing in the 90-degree electrical connector from different angles. Figure 8A and Figure 8B As shown in the diagram Figure 2A and Figure 2B Schematic perspective views of the die-cast housing in the 90-degree electrical connector from different angles.

[0056] According to alternative exemplary embodiments of this disclosure, such as Figure 6 and Figures 7A to 7CAs shown, for example, the terminal 50 has an annular first circumferential groove 502 formed on a first circumferential outer surface 501 of the terminal 50 facing the first circumferential inner surface 601 of the terminal housing 60, and the first seal 81 is configured to fill the first annular gap between the first circumferential outer surface 501 and the first circumferential inner surface 601 in the radial direction by pressing and sealing it between the first circumferential outer surface 501 of the terminal 50 and the first circumferential inner surface 601 of the terminal housing 60 when it is snapped into the first circumferential groove 502. Furthermore, according to an exemplary embodiment of this disclosure, as... Figures 7A to 7C and Figures 8A to 8B As shown, for example, the terminal housing 60 has an annular second circumferential groove 603 formed on the second circumferential outer surface 602 of the terminal housing 60 facing the second circumferential inner surface 701 of the molded housing 70, and the second seal 82 is configured to fill the second annular gap between the second circumferential outer surface 602 and the second circumferential inner surface 701 in the radial direction by pressing and sealing it between the second circumferential outer surface 602 of the terminal housing 60 and the second circumferential inner surface 701 of the molded housing 70 when it is snapped into the second circumferential groove 603. Thus, with this arrangement, based on a modular assembly structure, a radially filled integral self-sealing design of the 180-degree electrical connector 1 is achieved, effectively avoiding phenomena such as leakage and impact on the electrical connection.

[0057] In a further embodiment, as an example, the first circumferential groove 502 and the second circumferential groove 603 are arranged coaxially with each other. Furthermore, for example, the first seal 81 and the second seal 82 are arranged coaxially with each other.

[0058] Therefore, based on the above configuration and modular assembly structure, the overall coaxial radial filling self-sealing design of the 90-degree and 180-degree electrical connectors is achieved. This design is particularly suitable for reducing the impact of external vibrations in high-vibration working environments, facilitating reliable overall self-sealing against vibration effects. Furthermore, it effectively avoids phenomena such as leakage and their impact on electrical connections.

[0059] According to exemplary embodiments of this disclosure, see [link to relevant documentation]. Figure 3 For example, the terminal 10 includes: a first segment 11 extending through the terminal housing 20 and exposed from the terminal housing 20 into the molded housing 30; a second segment 12 inserted into the terminal housing 20; and a third segment 13 located at the opposite end to the first segment 11 and exposed from the terminal housing 20.

[0060] In further exemplary embodiments, such as Figure 3As shown as a specific example, the first circumferential groove 102 is formed in the portion of the second segment 12 adjacent to the third segment 13, and has a cross section that is radially narrower than the third segment 13, so as to receive and retain the first seal 41 in the first circumferential groove 102.

[0061] Furthermore, as a typical exemplary embodiment, for example, Figure 3 and Figures 4A to 4C As shown, the terminal 10 has a pair of first flat surfaces 103 formed on the portion of the second segment 12 that is opposite to the third segment 13 and spaced apart from the first circumferential groove 102, the pair of first flat surfaces 103 extending axially and facing each other radially; and the interior of the terminal housing 20 has a pair of flat tops 204 that protrude radially inward from the first circumferential inner surface 201 and face each other radially, the pair of flat tops 204 being adapted to press against the pair of first flat surfaces 103 respectively.

[0062] Accordingly, as an example, such as Figure 3 and Figures 4A to 4C As shown, the pair of flat tops 204 have axially parallel straight protrusions 205 for frictional contact with the pair of first flat surfaces 103, and the pair of flat tops 204 and the pair of first flat surfaces 103 are configured to work together using the frictional contact to perform axial alignment and axial guidance of the movement of the terminal 10 into the terminal housing 20.

[0063] This arrangement effectively enables the pair of flat tops 204 and the pair of first flat surfaces 103 to work together through frictional contact, thereby performing axial alignment and axial guidance for the insertion of the terminal 10 into the terminal housing 20. Under the guidance of the pair of flat tops 204, especially the additional axially arranged straight protrusions 205 on them, the alignment between the terminal 10 and the terminal housing 20 and the guidance of their relative movement are effectively achieved, avoiding unintended rotation of the terminal 10 during insertion into the terminal housing 20.

[0064] In further exemplary embodiments, such as Figure 3 and Figures 4A to 4CAs shown as a specific example, the terminal housing 20 further includes a protrusion 206 extending radially inward from the first circumferential inner surface 201 of the terminal housing 20 and arranged at least partially circumferentially, and the terminal 10 further includes an annular third circumferential groove 104 formed between the first segment 11 and the second segment 12, adapted to accommodate the protrusion 206; and, the protrusion 206 is engaged into the third circumferential groove 104 in response to the axial insertion of the terminal 10 into the terminal housing 20, thus positioning the terminal 10 within the terminal housing 20. Furthermore, in a further embodiment, as an example, once the terminal 10 is positioned within the terminal housing 20, the aforementioned first seal is pressed and sealed between the terminal and the terminal housing.

[0065] Thus, this arrangement enables the terminal 10 to be inserted into the terminal housing 20 during insertion, specifically by means of the protrusion 206 provided on the inner surface of the terminal housing 20, which engages with the third circumferential groove 104, thereby preventing the terminal 10 from accidentally retracting (e.g., due to external vibration or an unexpected outward pulling force acting on the tail of the terminal 10), and thus playing a role in preventing retraction.

[0066] According to alternative exemplary embodiments of this disclosure, see [link to relevant documentation]. Figure 6 For example, the terminal 50 includes: a first segment 51 extending through the terminal housing 60 and exposed from the terminal housing 60 into the molded housing 70; a second segment 52 inserted into the terminal housing 60; and a third segment 53 located at the opposite end to the first segment 51 and exposed from the terminal housing 60.

[0067] In further exemplary embodiments, such as Figure 6 As shown as a specific example, the first circumferential groove 502 is formed in the portion of the second segment 52 adjacent to the third segment 53, and has a cross section that is radially narrower than the third segment 53, so as to receive and retain the first seal 81 in the first circumferential groove 502.

[0068] Furthermore, as a typical exemplary embodiment, for example, Figure 6 and Figures 7A to 7C As shown, the terminal housing 60 also includes a radial ridge 604 extending inward from the circumferential columnar wall 63, and a plurality of cantilever members 605 extending axially toward the third segment 53 from the annular end face of the radial ridge 604 facing away from the molded housing 70. The plurality of cantilever members 605 are circumferentially spaced apart from each other and are capable of flexing radially inward.

[0069] Accordingly, as an example, such as Figure 6 and Figures 7A to 7C As shown, the terminal 50 also has a circumferential engagement groove 503 formed on the second segment 52 between the first circumferential groove 502 and the third segment 53, which is suitable for frictional contact with the corresponding free ends of the plurality of cantilever members 605.

[0070] In further exemplary embodiments, such as Figure 6 and Figures 7A to 7C As shown as a specific example, in response to the axial insertion of the terminal 50 into the terminal housing 60, the plurality of cantilever members 605 respectively rub against and press against the inner wall of the circumferential engagement groove 503 of the second section 52 with their respective free ends, thereby positioning the terminal 50 within the terminal housing 60. Furthermore, in a further embodiment, as an example, once the terminal 50 is axially inserted into the terminal housing 60, the aforementioned first seal is pressed and sealed between the terminal and the terminal housing.

[0071] With this arrangement, based on a plurality of cantilever members 605 extending axially toward the third section 53 from the annular end face of the radial ridge 604 away from the molded shell 70 and flexed radially inward (more specifically, each free end is bent radially inward and flexed), and spaced apart circumferentially (more preferably, evenly spaced), during the insertion of the terminal 50 into the terminal shell 60, especially when the terminal 50 is inserted into the terminal shell 60 and is in place, the plurality of cantilever beams effectively achieve frictional contact and abutment against the inner wall of the circumferential engagement groove 503 of the second section 52 with their respective flexed free ends, thereby firmly and reliably engaging and holding the terminal 50 within the circumferential engagement groove 503, preventing the terminal 50 from accidentally retracting (e.g., due to external vibration or force acting on the tail of the terminal 50), thus providing a backstop function.

[0072] As a specific exemplary embodiment, for example, such as Figure 7A and Figure 7B As shown, each cantilever member 605 has an inverted T-shaped cross-section running radially inward. Cantilever beams with this inverted T-shaped cross-section exhibit better bending resistance and torsional stiffness compared to rectangular cross-sections, making them particularly suitable for achieving long-span cantilever beams.

[0073] In an exemplary embodiment, for example, the plurality of cantilever beams, each having an inverted T-shaped cross-section, are eccentrically arranged relative to the terminal 50 to be inserted. For example, the plurality of cantilever members 605 are also arranged eccentrically relative to the circumferential columnar wall 63, so that during initial insertion, the terminal 50 locally applies a larger force to a portion of the plurality of cantilever beams, and as the insertion process proceeds, the force applied by the terminal 50 is gradually and evenly distributed to, for example, the plurality of cantilever beams preferably evenly arranged circumferentially, thereby achieving a uniform distribution of the force exerted by the inserted terminal 50 on the inner surface of the terminal housing 60.

[0074] According to exemplary embodiments of this disclosure, such as Figures 4A to 4C As shown, for example, the terminal housing 20 also includes a first tab 207 extending axially from a portion of the circumferential edge of the terminal housing 20 away from the distal end of the terminal 10, the first tab 207 having a fan-shaped cross-section.

[0075] Accordingly, as an example, such as Figures 4A to 4C and Figures 5A to 5B As shown, the molded shell 30 further comprises: two first limiting features 302, for example in the form of protrusions, protruding radially inward from the second circumferential inner surface 301 and spaced apart from each other in the circumferential direction, the two first limiting features 302 being adapted to hold and limit the first tab 207 therebetween in the circumferential direction, and configured to cooperate in guiding the first tab 207 axially into the molded shell 30 and acting as circumferential limiting members to overcome the circumferential rotation of the first tab 207; and a second limiting feature 303, for example protruding radially inward from the inner side of the molded shell 30 and arranged at least partially in the circumferential direction, and located at the distal end of the two first limiting features 302 opposite to the terminal 10, the second limiting feature 303 acting as an axial stop for the first tab 207 axially into the molded shell 30.

[0076] In further exemplary embodiments, such as Figures 4A to 4C and Figures 5A to 5B As shown as a specific example, the first protrusion 207 is engaged between the two first limiting features 302 in response to the axial insertion of the terminal housing 20 into the molded housing 30 until it is blocked by the second limiting feature 303, thus positioning the terminal housing 20 within the molded housing 30. Furthermore, in a further embodiment, as an example, once the terminal housing 20 is axially inserted into the molded housing 30, the aforementioned second seal is pressed and sealed between the terminal housing and the molded housing.

[0077] With this configuration, the first tab 207 is constrained in the circumferential direction by the two limiting features, for example, in the form of protrusions, provided on the inner surface of the molded shell 30. This constrains the insertion of the first tab 207, thereby guiding the insertion movement of the terminal shell 20 relative to the molded shell 30. This facilitates smooth and unobstructed directional insertion without any unexpected offset of the terminal shell 20, and also prevents unexpected rotation of the terminal shell 20 during insertion into the molded shell 30, thus achieving an anti-rotation stop.

[0078] Furthermore, as an example, such as Figure 4A and Figure 4B As shown, the surface of the first protrusion 207 is also provided with a concave-convex structure, and correspondingly, in the mating electrical connector 1 used for mating connection with the electrical connector 1, for example, the part or part to be used for engaging with the first protrusion 207 is also provided with a mating protrusion-concave structure to form a shape fit with the concave-convex structure, so as to realize the foolproof function of preventing incorrect assembly.

[0079] Furthermore, according to other or alternative exemplary embodiments of this disclosure, such as Figures 4A to 4C As shown, for example, the terminal housing 20 also includes a second tab 208 extending axially from a portion of the circumferential edge of the terminal housing 20 away from the distal end of the terminal 10, the second tab 208 being radially opposed to the first tab 207 and having a fan-shaped cross-section.

[0080] Accordingly, as an example, such as Figures 4A to 4C and Figures 5A to 5B As shown, the molded shell 30 also has an axial groove 304 that is partially recessed radially from the second circumferential inner surface 301. The axial groove 304 extends axially away from the terminal shell 20 from the circumferential edge of the molded shell 30 at one end facing the terminal shell 20, and the axial groove 304 is adapted to receive the second protrusion 208.

[0081] With this configuration, the axial groove 304 provided on the inner surface of the molded shell 30 is used to restrict the second protrusion 208 in the circumferential direction, thereby constraining the insertion of the second protrusion 208. This, in turn, guides the insertion movement of the terminal shell 20 relative to the molded shell 30, facilitating smooth and unobstructed directional insertion without any unexpected offset of the terminal shell 20. It also prevents the terminal shell 20 from unexpectedly rotating during insertion into the molded shell 30, thus achieving an anti-rotation stop.

[0082] Furthermore, as an example, such as Figure 4A and Figure 4B As shown, a second protrusion-contour structure is provided on the surface of the second protrusion 208, and correspondingly, in the mating electrical connector 1 for mating connection with the electrical connector 1, a second mating protrusion-contour structure is also provided on the part or part to be engaged with the second protrusion 208 for forming a shape fit with the second protrusion-contour structure to achieve a foolproof function to prevent incorrect assembly.

[0083] In a further embodiment, as an example, see, for instance, returning to the previous section. Figure 1A and Figure 1B In the 180-degree electrical connector 1, the electrical connector 1 further includes at least one high-voltage interlock (HVIL) terminal 10, the at least one high-voltage interlock terminal 91 being arranged to extend through a channel 209 embedded in a portion of the circumferential edge of the second tab 208 and the terminal housing 20 that is axially aligned with the second tab 208.

[0084] Furthermore, as an example, the electrical connector 1 also includes at least one third seal 43, each third seal 43 being sleeved on a corresponding high-voltage interlock terminal 91 and pressed and sealed between the outer surface of the corresponding high-voltage interlock terminal 91 and the inner surface of the channel 209.

[0085] This configuration also achieves an effective seal for the high voltage interlock (HVIL) terminal 10, thereby further ensuring a reliable overall self-sealing for the 180-degree electrical connector 1.

[0086] In a further exemplary embodiment, refer back to [link to previous document]. Figures 4A to 4C As a specific example, the second tab 208 extends axially away from the terminal 10 in a shorter length than the first tab 207. This arrangement is because the HVIL terminal 10 is configured to be embedded within the second tab 208 for engagement with a component or part of the power distribution connector 1 intended to engage with the second tab 208. Consequently, the second tab 208 has relatively less strength compared to the first tab 207, whereby the first tab 207 acts as the primary guide for the insertion of the terminal housing 20 into the die-cast housing 30, while the second tab 208 acts as an auxiliary guide.

[0087] According to exemplary embodiments of this disclosure, such as Figures 4A to 4C and Figures 5A to 5B As shown, for example, the terminal housing 20 also has a radially outwardly extending boss 210 located between one end of the terminal housing 20 facing away from the molded housing 30 and the second circumferential groove 203, and the boss 210 is aligned axially with the first protrusion 207.

[0088] With this configuration, when the terminal housing 20 is inserted into the molded housing 30, an additional stop is provided at the end of the terminal housing 20 opposite to the direction of insertion movement towards the molded housing 30. This prevents the terminal housing 20 from being inserted beyond its permissible stroke during assembly. This boss 210 essentially acts as a stroke limiter to prevent the terminal housing 20 from being excessively inserted into the molded housing 30, which could lead to unintended internal compression within the electrical connector 1. Furthermore, since the boss 210 is aligned with the first tab 207, while the first tab 207 guides the insertion of the front end of the terminal housing 20, the boss 210 limits the stroke of the rear end of the terminal housing 20. Together, they ensure accurate stroke control along the axial line connecting the first tab 207 and the tab.

[0089] According to exemplary embodiments of this disclosure, such as Figure 3 As shown, for example, the third section 13 has a threaded hole 105 for mounting the electrical connector 1 through a threaded connection thereon. This achieves a secure connection of the electrical connector 1 at the field of use.

[0090] According to exemplary embodiments of this disclosure, such as Figure 1A , Figure 1B and Figure 3 As shown, for example, the electrical connector 1 further includes an insulating protective cover 92 screwed to the free end of the first segment 11 of the terminal 10. The electrical insulation properties of the protective cover 92 ensure that, for example, when a user's finger is inserted into and contacts the protective cover 92 through both the molded housing 30 and the terminal housing 20, direct contact and unintended conductive connection between the finger and the terminal 10 are avoided, thereby meeting, for example, the direct contact protection requirements specified in GB 18384-2020 "Safety Requirements for Electric Vehicles", preventing direct contact of the finger with the metal terminal 10 and avoiding injury therefrom.

[0091] According to exemplary embodiments of this disclosure, for example in... Figure 5A and Figure 5B In the molded housing 30 of the 180-degree electrical connector 1 shown, the molded housing 30 has a first flange 305 that protrudes laterally outward around its outer side in the circumferential direction. The first flange 305, for example, serves to divide the electrical connector 1 into an insertion side for mating with a power distribution connector 1 and an opposite mounting side for mounting to a device, and, for example, has a rectangular or square cross-section for mounting the electrical connector 1, as shown. As an example, the first flange 305 has a plurality of threaded holes 105 for achieving mounting by means of a threaded connection. As an example, a planar annular surface seal 31 is formed on the first flange 305.

[0092] According to exemplary embodiments of this disclosure, for example in... Figure 8A and Figure 8B In the molded housing 70 of the 90-degree electrical connector 1 shown, the molded housing 70 has a second flange 702 that protrudes laterally outward around its outer side in the circumferential direction. The second flange 702, for example, divides the electrical connector 1 into an insertion side for mating with a power distribution connector 1 and an opposite mounting side for mounting to a device, and has, for example, a rectangular or square cross-section for mounting the electrical connector 1, as shown. As an example, the second flange 702 has a plurality of threaded holes for mounting by means of a threaded connection. As an example, a planar annular surface seal 71 is formed on the second flange 702.

[0093] Based on the above-mentioned electrical connectors, such as 180-degree electrical connectors and 90-degree electrical connectors, the following superior technical effects compared to existing technical solutions in the field can be achieved:

[0094] Based on such a structure and assembly configuration of electrical connectors, such as the integral coaxial radially filled self-sealing design based on a modular assembly structure achieved using existing processes, it is suitable for high-voltage environments and meets testing requirements such as high vibration and high current, as well as for inverter applications with high-voltage circuits containing ATF oil. Furthermore, the modular design of the structure facilitates cost reduction and thereby broadens the application areas of electrical connector products in the market.

[0095] Figure 9A and Figure 9B The figures show a schematic perspective view and a schematic exploded view of a 180-degree electrical connector assembly according to an exemplary embodiment of the present disclosure. Figure 10A and Figure 10B The figures show a schematic perspective view and a schematic exploded view of a 90-degree electrical connector assembly according to another exemplary embodiment of the present disclosure.

[0096] In another aspect of this disclosure, according to a general technical concept of this disclosure, such as as shown in the figure, an electrical connector assembly is also provided, the electrical connector assembly comprising at least two electrical connectors according to the foregoing, wherein the molded housings of the at least two electrical connectors are integrally formed together.

[0097] As a specific exemplary embodiment, for example, Figure 9A and Figure 9B As shown, an exemplary electrical connector assembly 2 is provided, the electrical connector assembly 2 including at least two 180-degree electrical connectors 1 according to the foregoing, the molded housings 30 of the at least two electrical connectors 1 being integrally formed together.

[0098] In an exemplary embodiment, as shown in the figure, the electrical connector assembly 2 comprises three of the aforementioned 180-degree electrical connectors 1 arranged side by side, and their respective first flange portions 305 are integrally connected or integrally formed with each other. Accordingly, the planar annular surface seals 31 on the first flange portions 305 of the three aforementioned 180-degree electrical connectors are collectively formed into a single closed annular surface seal.

[0099] In an exemplary embodiment, as an example, for instance, as shown in the figure, the high-voltage interlock terminals of the three aforementioned 180-degree electrical connectors are electrically connected to each other.

[0100] As an alternative exemplary embodiment, for example, Figure 10A and Figure 10B As shown, an exemplary electrical connector assembly 2 is provided, the electrical connector assembly 2 including at least two 90-degree electrical connectors 1 according to the foregoing, the molded housings 70 of the at least two electrical connectors 1 being integrally formed together.

[0101] In an exemplary embodiment, as shown in the figure, the electrical connector assembly 2 comprises three of the aforementioned 90-degree electrical connectors 1 arranged side by side, with their respective first flange portions integrally connected or integrally formed with each other. Accordingly, the planar annular surface seals 71 on the second flange portions 702 of the three aforementioned 90-degree electrical connectors are collectively formed into a single closed annular surface seal.

[0102] Furthermore, considering that the electrical connector assembly provided in another aspect of this disclosure includes the aforementioned electrical connector, it also possesses the advantages of the aforementioned electrical connector, which will not be elaborated further here.

[0103] The above description of the electrical connectors and electrical connector assemblies in the foregoing embodiments of this disclosure is intended to be illustrative and not restrictive. Although this disclosure has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplify preferred embodiments of this disclosure and should not be construed as limiting this disclosure.

[0104] Therefore, those skilled in the art will understand that the embodiments described above are exemplary and can be improved by those skilled in the art. The structures described in the various embodiments can be modified and freely combined without conflict in structure or principle, and these changes should fall within the protection scope of this disclosure.

[0105] The breadth and scope of this disclosure should not be limited to any of the embodiments described above, but should be defined only by the following claims and their equivalents.

[0106] It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude multiple. Furthermore, any element reference numerals in the claims should not be construed as limiting the scope of this disclosure.

Claims

1. An electrical connector (1), comprising: Conductive terminals (10, 50); An insulated terminal housing (20, 60) is configured to at least partially accommodate the terminal; and A die-cast housing (30, 70) is configured to at least partially accommodate the terminal housing. in, The electrical connector also includes: The first sealing element (41, 81) is fitted onto the terminals (10, 50); and The second sealing element (42, 82) is fitted onto the terminal housing (20, 60). The terminal is configured to be axially inserted into the terminal housing in response to the first seal being fitted onto the terminal, and the first seal is pressed and sealed between the terminal and the terminal housing; and The terminal housing is configured to be inserted into the molded housing in response to the second seal being fitted onto the terminal housing, and the second seal is pressed and sealed between the terminal housing and the molded housing.

2. The electrical connector according to claim 1, wherein, The terminal housing (20, 60) has circumferential columnar walls (23, 63) defining hollow axial spaces (22, 62) open at both ends, and the terminals (10, 50) are at least partially accommodated within the space defined by the first circumferential inner surface (201, 601); and The molded shells (30, 70) are hollow and at least partially accommodate the terminal shells (20, 60) within the space defined by their second circumferential inner surfaces (301, 701).

3. The electrical connector according to claim 2, wherein, The terminals (10, 50) have an annular first circumferential groove (102, 502) formed on the first circumferential outer surface (101, 501) of the first circumferential inner surface (201, 601) of the terminal (10, 50) facing the terminal housing (20, 60), and the first seal (41, 81) is configured to radially press against and seal between the first circumferential outer surface (101, 501) of the terminal (10, 50) and the first circumferential inner surface (201, 601) of the terminal housing (20, 60) by engaging with the first circumferential groove (102, 502); and The terminal housing (20, 60) has an annular second circumferential groove (203, 603) formed on the second circumferential outer surface (202, 602) of the second circumferential inner surface (301, 701) of the terminal housing (20, 60) facing the molded shell (30, 70), and the second seal (42, 82) is configured to press and seal radially between the second circumferential outer surface (202, 602) of the terminal housing (20, 60) and the second circumferential inner surface (301, 701) of the molded shell (30, 70) by engaging with the second circumferential groove (203, 603).

4. The electrical connector according to claim 3, wherein, The first circumferential groove (102, 502) and the second circumferential groove (203, 603) are arranged coaxially with each other; and / or The first seal (41, 81) and the second seal (42, 82) are arranged to be coaxial with each other.

5. The electrical connector according to claim 3, wherein, The terminals (10, 50) include: The first section (11, 51) extends through the terminal housing (20, 60) and is exposed from the terminal housing (20, 60) into the molded housing (30, 70); The second section (12, 52) is inserted into the terminal housing (20, 60); and The third segment (13, 53) is located at the opposite end to the first segment (11, 51) and is exposed from the terminal housing (20, 60).

6. The electrical connector according to claim 5, wherein, The first circumferential groove (102, 502) is formed in the portion of the second segment (12, 52) adjacent to the third segment (13, 53) and has a cross section that is radially narrower than the third segment (13, 53).

7. The electrical connector (1) according to claim 5, wherein, The terminal (10) has a pair of first flat surfaces (103) formed on a portion of the second segment (12) that is opposite to the third segment (13) and spaced apart from the first circumferential groove (102), the pair of first flat surfaces (103) extending axially and facing each other radially; and The interior of the terminal housing (20) has a pair of flat tops (204) that protrude radially inward from the first circumferential inner surface (201) and face each other radially, the pair of flat tops (204) being adapted to press against the pair of first flat surfaces (103) respectively.

8. The electrical connector (1) according to claim 7, wherein, The pair of flat tops (204) have axially parallel straight protrusions (205) for frictional contact with the pair of first flat surfaces (103), and the pair of flat tops (204) and the pair of first flat surfaces (103) are configured to work together using the frictional contact to perform axial alignment and axial guidance of the movement of the terminal (10) into the terminal housing (20).

9. The electrical connector (1) according to claim 7 or 8, wherein, The terminal housing (20) further includes a protrusion (206) extending radially inward from the first circumferential inner surface (201) of the terminal housing (20) and arranged at least partially circumferentially, and the terminal (10) further includes an annular third circumferential groove (104) formed between the first segment (11) and the second segment (12) and adapted to accommodate the protrusion (206), and The protrusion (206) is engaged into the third circumferential groove (104) in response to the axial insertion of the terminal (10) into the terminal housing (20), and the terminal (10) is then inserted into the terminal housing (20) and positioned.

10. The electrical connector (1) according to claim 5, wherein, The terminal housing (60) also includes a radial ridge (604) extending inward from the circumferential columnar wall (603), and a plurality of cantilever members (605) extending axially toward the third segment (53) from the annular end face of the radial ridge (604) facing away from the molded shell (70), the plurality of cantilever members (605) being circumferentially spaced apart from each other and capable of flexing radially inward respectively.

11. The electrical connector (1) according to claim 10, wherein, The terminal (50) also has a circumferential engagement groove (503) formed on the second section (52) between the first circumferential groove (502) and the third section (53), which is suitable for frictional contact with the respective free ends of the plurality of cantilever members (605).

12. The electrical connector (1) according to claim 11, wherein, By means of the plurality of cantilever members (605) rubbing against and pressing against the inner wall of the circumferential engagement groove (503) of the second section (52) with their respective free ends in response to the axial insertion of the terminal (50) into the terminal housing (60), the terminal (50) is inserted into the terminal housing (60) and positioned.

13. The electrical connector (1) according to claim 11, wherein, Each cantilever (605) has an inverted T-shaped cross section that is radially inward.

14. The electrical connector (1) according to claim 3, wherein, The terminal housing (20) further includes a first tab (207) extending axially from a portion of the circumferential edge of the terminal housing (20) away from the terminal (10), the first tab (207) having a fan-shaped cross-section.

15. The electrical connector (1) according to claim 14, wherein, The die-cast shell (30) also has: Two first limiting features (302), radially inwardly protruding from the second circumferential inner surface (301) and circumferentially spaced apart, are adapted to hold and limit the first tab (207) therebetween in the circumferential direction, and are configured to cooperatively guide the first tab (207) axially into the molded shell (30) and act as circumferential limiting members to overcome circumferential rotation of the first tab (207); and The second limiting feature (303) protrudes radially inward from the inside of the molded shell (30) and is arranged at least partially circumferentially, and is located at the far end of the two first limiting features (302) opposite to the terminal (10). The second limiting feature (303) acts as an axial stop for the first tab (207) to be inserted axially into the molded shell (30).

16. The electrical connector (1) according to claim 15, wherein, The terminal housing (20) is engaged between the two first limiting features (302) by the first tab (207) in response to the axial insertion of the terminal housing (20) into the molded housing (30) until blocked by the second limiting feature (303), and the terminal housing (20) is then inserted into the molded housing (30) in place.

17. The electrical connector (1) according to claim 15 or 16, wherein, The terminal housing (20) further comprises a second tab (208) extending axially from a portion of the circumferential edge of the terminal housing (20) away from the terminal (10), the second tab (208) being radially opposed to the first tab (207) and having a fan-shaped cross section.

18. The electrical connector (1) according to claim 17, wherein, The molded shell (30) also has an axial groove (304) that is radially recessed from the second circumferential inner surface (301). The axial groove (304) extends axially away from the terminal shell (20) from the circumferential edge of the molded shell (30) at one end facing the terminal shell (20), and the axial groove (304) is adapted to receive the second tab (208).

19. The electrical connector (1) according to claim 17, wherein, The electrical connector (1) further includes at least one high-voltage interlock terminal (91), which is arranged to extend through a channel (209) embedded in a portion of the circumferential edge of the second tab (208) and the terminal housing (20) aligned axially with the second tab (208).

20. The electrical connector (1) according to claim 19, wherein, The electrical connector (1) further includes at least one third seal (43), each third seal (43) being fitted onto the corresponding high-voltage interlock terminal (91) and pressed and sealed between the outer surface of the corresponding high-voltage interlock terminal (91) and the inner surface of the channel (209).

21. The electrical connector (1) according to claim 19, wherein, The second tab (208) is shorter in length than the first tab (207) in the axial direction away from the terminal (10).

22. The electrical connector (1) according to claim 14, wherein, The terminal housing (20) further comprises a radially outwardly extending boss (210) located between one end of the terminal housing (20) opposite to the molded shell (30) and the second circumferential groove (203), and the boss (210) is aligned axially with the first protrusion (207).

23. An electrical connector assembly (2), wherein, The electrical connector assembly (2) includes at least two electrical connectors (1) according to any one of claims 1 to 22, wherein the molded housings (30, 70) of the at least two electrical connectors (1) are integrally formed together.

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