Male seat connector and connector assembly

Abstract

The invention discloses a male seat connector and a connector assembly. The connector assembly comprises a male seat connector and a female seat connector. The male seat connector comprises a male insulation base, a male seat conductive terminal and a male seat protection shell. The female seat connector comprises a female insulation base, a female seat conductive terminal and a female seat protection shell. According to the invention, a plurality of buckling points are designed at the contact parts of the male seat connector and the female seat connector, so that the plugging stability and the electrical connection reliability are enhanced; the end wall protection part and the bottom of the side wall protection part of the male socket protection shell are integrally connected through the connecting plate, so that the structural strength, the overflowing area and the heat dissipation performance of the male socket protection shell are enhanced; in addition, the male seat protection shell adopts a full-wrapping type protection structure design and is integrally formed with the male seat power supply terminal, and the female seat protection shell adopts a full-wrapping type protection structure design and is integrally formed with the cap part of the middle island structure, so that the assembly process is greatly simplified, the manufacturing cost is reduced, and the durability and the electromagnetic shielding performance of the connector are improved.

Description

Technical Field

[0001] This invention belongs to the field of electrical connector technology, and particularly relates to a board-to-board connector. Background Technology

[0002] Board-to-board (BTO) connector assemblies are commonly used connection components in electronic products, establishing an electrical connection between two circuit boards. They mainly consist of two parts: a female connector and a male connector. The female connector is typically soldered onto one circuit board, while the male connector is soldered onto another. Both the female and male connectors have a corresponding number of conductive terminals for transmitting electronic signals and power. By plugging in the female and male connectors, a communication connection between the two circuit boards can be achieved.

[0003] However, existing board-to-board connectors still have some problems during use, such as Figure 10 As shown in the disclosure CN219843174U, the socket connector and connector assembly in the existing board-to-board connector assembly have separate designs for the end protection part and the central island protection part. Moreover, the metal protection part of the male connector and the end wall protection part of the female connector can only provide partial protection and cannot effectively cover the inner and outer corners of the insulating base, thus failing to provide all-round protection. After repeated insertion and removal, there is a risk of deformation. The gaps in the corner coverage also result in poor electromagnetic shielding. Furthermore, due to the small coverage area, the current-carrying area and heat dissipation area are also small, making it difficult to conduct larger currents. In addition, there are few locking points, with two locking points near both ends, which cannot fully guarantee the reliability and stability of the connection after the male connector and the female connector are plugged in.

[0004] Therefore, it is necessary to improve the existing connector sockets to further enhance the mating stability, electromagnetic interference resistance, high current conduction capability, structural strength, and service life of board-to-board connectors. Summary of the Invention

[0005] The purpose of this invention is to provide a male connector and connector assembly to overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A male connector includes a male insulating base, male conductive terminals, and a male protective shell. The male insulating base includes a rectangular central slot located in the middle, a pair of opposing long side walls, and a pair of opposing short end walls. The male conductive terminals include a male signal terminal and a male power terminal embedded in male terminal slots in the middle of the two long side walls. The male protective shell includes an end wall protection portion covering the upper part of the short end walls, a side wall protection portion partially covering the upper part of the long side walls and integrally connected to the male power terminal, and a connecting portion covering the inner bottom surface of the male insulating base and integrally connecting the end wall protection portion and the side wall protection portion.

[0008] Furthermore, the end wall protection portion includes an end wall top surface covering portion covering the top surface of the short side end wall, an end wall inner side surface covering portion covering the inner side of the short side end wall, and an end wall outer side surface covering portion covering the outer side of the short side end wall.

[0009] Furthermore, the sidewall protection portion is an extension of the end wall covering portion toward the long sidewall, including a sidewall top surface covering portion partially covering the top surface of the long sidewall, a sidewall inner surface covering portion partially covering the inner surface of the long sidewall, a sidewall outer surface covering portion partially covering the outer surface of the long sidewall, an inner corner covering portion covering the inner corner of the short endwall and the long sidewall, and an outer corner covering portion covering the outer corner of the short endwall and the long sidewall.

[0010] Furthermore, the present invention also provides a connector assembly, a male connector and a female connector detachably electrically connected to the male connector, the female connector comprising: a female insulating base, female conductive terminals and a female protective shell, the female insulating base comprising a pair of oppositely arranged long side structures, a pair of oppositely arranged short side structures and a central island structure that mates with the central slot of the male insulating base; the female conductive terminals comprising a female signal terminal and a female power terminal embedded in a female terminal slot between the long side structures and the central island structure; the female protective shell comprising an end protection portion covering the upper part of the end of the female insulating base and a cap portion covering the end of the central island structure, and a connecting fixing portion located on the inner bottom surface of the female insulating base that integrates the end protection portion and the central island protection portion.

[0011] Furthermore, the end protection portion includes a top wall protection portion that fully covers the top surface of the short side structure and partially covers the top surface of the long side structure, an inner wall protection portion that fully covers the inner side of the short side structure and partially covers the inner side of the long side structure, an outer wall protection portion that fully covers the outer side of the short side structure and partially covers the outer side of the long side structure, an inner corner protection portion covering the inner corners of the short side structure and the long side structure, and an outer corner protection portion covering the outer corners of the short side structure and the long side structure.

[0012] Furthermore, the connecting and fixing part is a horizontal inward extension of the bottom edge of the outer wall protection part on the outer side of the short side structure, and is integrally connected with the cap part. The connecting and fixing part has elastic contact parts extending vertically upward on both sides.

[0013] Furthermore, the connecting and fixing part is the bottom edge of the inner wall protection part of the inner side of the short side structure extending horizontally inward and integrally connected with the cap part, and the outer wall protection part of the outer side of the long side structure is provided with an elastic abutment part that bends inward and extends upward.

[0014] Furthermore, the inner and outer sides of the male seat protective shell are provided with fastening grooves, and correspondingly, the inner wall of the end protection part and the outer wall of the cap part are respectively provided with a first fastening protrusion and a second fastening protrusion.

[0015] Furthermore, the female power terminal is integrally bent and formed, including a retaining part embedded in the female terminal groove, a welding foot extending outward from the female insulating base, a first contact arm extending inward from the female insulating base for contacting the outer side cover of the male protective shell, a second contact arm for contacting the male power terminal inside the male protective shell, and a connecting arm for connecting the first contact arm and the second contact arm. The end of the second contact arm is bent and formed with a contact head that cooperates with the fastening groove on the inner side of the male protective shell. The first contact arm has a third fastening protrusion that cooperates with the fastening groove on the outer side of the male protective shell.

[0016] Furthermore, both the male connector conductive terminal and the male connector protective shell are made of metal and are fixed to the male insulating base by an inlay molding method; both the female connector conductive terminal and the female connector protective shell are made of metal and are fixed to the male insulating base by an inlay molding method.

[0017] Compared with the prior art, the beneficial technical effects of the male connector and connector assembly provided by the present invention are as follows:

[0018] 1. In this invention, the male power terminal and the male protective shell are integrated, and the cap of the island structure of the female connector and the female protective shell are integrated, eliminating the need for further assembly of the outer shell and greatly saving assembly steps and costs.

[0019] 2. Both the male and female protective shells of the present invention are fully enclosed seamless metal protective parts formed by stretching process, which can provide all-round protection for the inner and outer corners of the insulating base, making them less prone to deformation during insertion and removal, less prone to wear on the insulating base, with a longer service life, and better electromagnetic shielding performance.

[0020] 3. The bottom of the end wall protection portion and the side wall protection portion of the male connector protective shell of the present invention are also integrally connected by a connecting plate, which enhances the structural strength of the male connector protective shell and effectively increases the current-carrying area of ​​the connector, enabling it to carry larger currents and providing better heat dissipation.

[0021] 4. The male and female connectors of the present invention have multiple engagement points on their four-sided contact portions, which effectively enhances the mechanical insertion and removal stability and the electrical connection reliability.

[0022] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0023] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0024] Figure 1 This is a schematic diagram of the structure of a connector assembly provided in an embodiment of the present invention;

[0025] Figure 2 A cross-sectional view of a connector assembly along line AA provided in an embodiment of the present invention;

[0026] Figure 3 A cross-sectional view of a connector assembly along the BB line provided in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of a male connector provided in an embodiment of the present invention;

[0028] Figure 5 An exploded view of a male connector provided in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of a female connector provided in an embodiment of the present invention;

[0030] Figure 7 An exploded view of a female connector provided in an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of a male connector protective shell in an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the structure of a female connector protective shell provided in an embodiment of the present invention;

[0033] Figure 10 This is a structural schematic diagram of an alternative solution for the female connector protective shell in an embodiment of the present invention.

[0034] The attached diagram lists the components represented by each number as follows:

[0035] 1-Male insulating base, 101-Central slot, 102-Long side wall, 103-Short end wall, 2-Male connector signal terminal, 3-Male connector power terminal, 4-Male connector protective shell, 401-End wall top surface cover, 402-End wall inner surface cover, 403-End wall outer surface cover, 404-Side wall top surface cover, 405-Side wall inner surface cover, 406-Side wall outer surface cover, 407-Inner corner cover, 408-Outer corner cover, 409-Connecting plate, 410-Snap-fit ​​groove, 5-Female insulating base, 501-Central island structure, 502-Long side structure, 503-Short side structure, 504-Matching slot, 6-Female 7-Signal terminal, 7-Power terminal of female connector, 701-Holding part, 702-Solder foot, 703-First contact arm, 704-Second contact arm, 705-Contact head, 706-Connecting arm, 707-Third snap-fit ​​protrusion, 8-Female connector protective shell, 801-Top wall protection part, 802-Inner wall protection part, 803-Outer wall protection part, 804-Inner corner protection part, 805-Outer corner protection part, 806-Cap part, 807-First snap-fit ​​protrusion, 808-Second snap-fit ​​protrusion, 809-Connecting fixing part, 810-Elastic contact part, 811-Central island cap, 812-Hook adhesive part, 813-Connecting piece, 814-Elastic abutment part. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] like Figure 1 As shown, this embodiment of the invention provides a connector assembly, including a male connector and a female connector detachably and electrically connected to the male connector. Specifically:

[0038] like Figure 4 and Figure 5 As shown, the male connector includes a male insulating base 1, a male conductive terminal, and a male protective shell 4. The male conductive terminal and the male protective shell 4 are both made of metal and are directly fixed to the male insulating base 1 by inlay injection molding, saving assembly steps and costs.

[0039] The male insulating base 1 is the foundation of the male connector. Its main body adopts a rectangular box structure design, including a central rectangular slot 101, a pair of opposing long side walls 102, and a pair of opposing short side end walls 103. As a mounting base for other components, it provides physical support and electrical insulation, isolating the male connector conductive terminals to prevent interference. The male connector conductive terminals, serving as the electrical connection parts of the male connector, are all made of elastic metal sheets. There are two sets of male connector conductive terminals, symmetrically embedded in the male connector terminal slots in the middle of the two long side walls 102. Each set of male connector conductive terminals includes a male connector signal terminal 2 group consisting of multiple male connector signal terminals 2 arranged side-by-side at equal intervals, and two male connector power terminals 3 located on both sides of the male connector signal terminal 2 group. The soldering ends of the male connector conductive terminals pass through the bottom plate of the male insulating base 1 and protrude outside the male insulating base 1, used to connect to the circuit board and realize the transmission of electrical signals.

[0040] like Figure 4 and Figure 8 As shown, the male seat protective shell 4 is integrally formed using a stretching process, and includes an end wall protective portion and a side wall protective portion. Specifically, the end wall protective portion covers the upper part of the short side end wall 103, and includes an end wall top surface covering portion 401 that fully covers the top surface of the short side end wall 103, an end wall inner side surface covering portion 402 that fully covers the inner side of the short side end wall 103, and an end wall outer side surface covering portion 403 that fully covers the outer side of the short side end wall 103. The sidewall protection portion is located at both ends of the endwall protection portion and extends along the long sidewall 102 toward the male connector conductive terminal. It partially wraps the long sidewall 102 and is integrally connected to the male connector power terminal 3. The sidewall protection portion specifically includes a sidewall top surface covering portion 404 that partially covers the top surface of the long sidewall 102, a sidewall inner surface covering portion 405 that partially covers the inner surface of the long sidewall 102, a sidewall outer surface covering portion 406 that partially covers the outer surface of the long sidewall 102 and is integrally connected to the male connector power terminal 3, an inner corner covering portion 407 that covers the inner corners of the short sidewall 103 and the long sidewall 102, and an outer corner covering portion 408 that covers the outer corners of the short sidewall 103 and the long sidewall 102. By adopting this fully enclosed structural design, not only is the overall structural strength of the connector improved, making it more wear-resistant and extending its service life, but compared to traditional stamping or bending processes, the male connector protective shell 4 formed by stretching in this invention has no gaps at the corners, resulting in better electromagnetic shielding performance. Furthermore, as a preferred embodiment, the inner bottom surface of the male insulating base 1 is also covered with a connecting plate 409, which integrally connects the bottom of the end wall protection portion and the side wall protection portion, effectively increasing the current-carrying area of ​​the connector, allowing it to handle larger currents and providing better heat dissipation.

[0041] like Figure 6 and Figure 7 As shown, the female connector includes a female insulating base 5, female conductive terminals, and a female protective shell 8. Both the female conductive terminals and the female protective shell 8 are made of metal. Similarly, the female conductive terminals and the female protective shell 8 are directly molded and fixed to the female insulating base 5 using an inlay injection molding method.

[0042] like Figure 6 and Figure 7 As shown, the female insulating base 5 is the foundation of the female connector. Its main body adopts a rectangular box structure design, serving as the mounting base for other components. It provides physical support and electrical insulation, isolating the conductive terminals of each female connector to prevent mutual interference. The female insulating base 5 includes a pair of oppositely arranged long side structures 502, a pair of oppositely arranged short side structures 503, and an integrated island structure 501 that is located in the middle of the base plate of the insulating base and protrudes upward. The dimensions of the island structure 501 match the central slot 101 of the male insulating base 1, and the island structure 501 is spaced apart from both the long side structures 502 and the short side structures 503 to form a U-shaped mating slot 504 for mating with the male connector.

[0043] The female connector conductive terminals include female connector signal terminals 6 and female connector power terminals 7. Multiple female connector signal terminals 6 are arranged side-by-side at intervals within the female connector terminal slot between the long side structure 502 and the central island structure 501, forming a group of female connector signal terminals 6. The female connector power terminals 7 are located on both sides of the female connector signal terminal group 6. The female connector conductive terminals are also made of elastic metal sheets. As the main working part of the connector, one end of the conductive terminal can form a tight contact with the male connector conductive terminal through elastic deformation when the male connector is inserted into the female connector, thus completing the electrical connection function. The soldered end of the female connector conductive terminal passes through the bottom plate of the female insulating base 5 and protrudes outside the female insulating base 5 for connecting the circuit board to realize the transmission of electrical signals.

[0044] like Figure 6 and Figure 9As shown, the female connector protective shell 8 is an integral component formed by stretching and bending a metal plate, including an end protection section and a central island protection section. The end protection section covers the upper part of the female insulating base 5 to strengthen the structural strength of the insulating base 1 and prevent damage to the connector when subjected to external impact. The end protection section includes a top wall protection section 801 that fully covers the top surface of the short side structure 503 and partially covers the top surface of the long side structure 502; an inner wall protection section 802 that fully covers the inner side of the short side structure 503 and partially covers the inner side of the long side structure 502; an outer wall protection section 803 that fully covers the outer side of the short side structure 503 and partially covers the outer side of the long side structure 502; an inner corner protection section 804 covering the inner corners of the short side structure 503 and the long side structure 502; and an outer corner protection section 805 covering the outer corners of the short side structure 503 and the long side structure 502. By adopting this fully enclosed design that covers both the inner and outer corners, the mechanical strength of the female insulating base 5 is increased, the insertion is less prone to wear and deformation, the wear of the connector assembly during insertion and removal is reduced, the service life of the female connector is improved, and it can also cooperate with the male connector protective shell 4 on the male connector to improve the electromagnetic shielding performance of the connector assembly.

[0045] The island protection section includes a cap portion 806 and a connecting fixing portion 809. The cap portion 806 completely covers the end of the island structure 501 to protect the end of the island structure 501. The connecting fixing portion 809 is located on the inner bottom surface of the female insulating base 5, connecting the end protection section and the island protection section as one unit. This further simplifies the assembly process and effectively improves the structural strength of the female base protective shell 8, increasing the current-carrying area of ​​the connector. Figure 9 As shown, specifically in this embodiment, the connecting fixing part 809 is a horizontal inward extension of the bottom edge of the outer wall protection part 803 on the outer side of the short side structure 503, and is integrally connected with the cap part 806, simplifying the assembly process while making the end protection part and the central island protection part form a whole. The connecting fixing part 809 has vertically upward extending elastic contact parts 810 on both sides for electrical contact with the side wall protection part of the male seat protective shell 4.

[0046] It is worth mentioning that, such as Figure 10As shown, as an alternative, the connecting piece 813 (equivalent to the connecting fixing part 809 in Embodiment 1) can also be a horizontal inward extension of the bottom edge of the inner wall protection part 802 on the inner side of the short side structure 503, and the extended end of the connecting piece 813 is integrally connected to the island cap 811 (equivalent to the cap part 806 in Embodiment 1), simplifying the assembly process while making the end protection part and the island protection part form a whole. Correspondingly, in order to prevent mutual interference between the sheets and facilitate the molding of the island protection part, the elastic abutment part 814 at the end of the female connector (equivalent to the elastic contact part 810 in Embodiment 1) is formed by bending the extension of the outer wall protection part 803 on the outer side of the long side structure 502 upward, forming a contact terminal that makes electrical contact with the side wall protection part of the male connector protective shell 4. In addition, it is obvious that a hook adhesive part 812 can also be provided on the cap part 806, so that the island protection part can be more firmly connected to the end of the island structure 501 and prevent loosening.

[0047] like Figure 2 As shown, in a preferred embodiment, the sidewall of the female connector protective shell 8 that contacts the male connector protective shell 4 is also provided with an anti-detachment structure. The anti-detachment structure specifically includes a locking groove 410 and a locking protrusion that cooperates with the locking groove 410. The locking groove 410 is formed on the inner and outer sides of the male connector protective shell 4. The locking protrusion includes a first locking protrusion 807 disposed on the inner wall of the end protection portion (i.e., the inner wall protection portion 802) and a second locking protrusion 808 disposed on the outer wall of the cap portion 806 (or the island cap 811) opposite to the first locking protrusion 807. To enable a tighter connection between the male connector and the female connector, the female connector power terminal 7 is integrally bent and adopts a double-point contact design, such as... Figure 3As shown, the female power terminal 7 includes a retaining portion 701 embedded in the female terminal groove, a solder foot 702 extending outward from the female insulating base 5, a first contact arm 703 extending inward from the female insulating base 5 for contacting the outer side covering portion 406 of the male protective shell 4, a second contact arm 704 for contacting the male power terminal 3 inside the male protective shell 4, and a connecting arm 706 for connecting the first contact arm 703 and the second contact arm 704. The end of the second contact arm 704 is bent into a contact head 705 that cooperates with the fastening groove 410 on the inner side of the male protective shell 4. The first contact arm 703 is provided with a third fastening protrusion 707 that cooperates with the fastening groove 410 on the outer side of the male protective shell 4. When the male connector is inserted into the female connector, the first snap-fit ​​protrusion 807, the second snap-fit ​​protrusion 808, the third snap-fit ​​protrusion 707, and the contact head 705 can also fit into the snap-fit ​​groove 410, which greatly improves the reliability and contact stability of the connection between the female connector and the male connector. Moreover, the multi-point contact method can further improve the connector's resistance to electromagnetic interference.

[0048] The embodiments described above are merely illustrative of implementation methods of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A male connector, characterized in that, include: The male insulating base (1) includes a rectangular central slot (101) located in the middle, a pair of opposing long side walls (102), and a pair of opposing short side end walls (103). The male connector conductive terminals include a male connector signal terminal (2) and a male connector power terminal (3) embedded in the male connector terminal slot in the middle of the two long side walls (102). The male connector protective shell (4) includes an end wall protection portion covering the short side end wall (103), a side wall protection portion partially covering the long side wall (102) and integrally connected to the male connector power terminal (3), and a connecting portion covering the inner bottom surface of the male insulating base (1) and integrally connecting the end wall protection portion and the side wall protection portion.

2. A male connector according to claim 1, characterized in that: The end wall protection portion includes an end wall top surface covering portion (401) covering the top surface of the short side end wall (103), an end wall inner side surface covering portion (402) covering the inner side of the short side end wall (103), and an end wall outer side surface covering portion (403) covering the outer side of the short side end wall (103).

3. A male connector according to claim 2, characterized in that: The sidewall protection portion is an extension of the end wall covering portion toward the long sidewall (102), including a sidewall top surface covering portion (404) that partially covers the top surface of the long sidewall (102), a sidewall inner surface covering portion (405) that partially covers the inner surface of the long sidewall (102), a sidewall outer surface covering portion (406) that partially covers the outer surface of the long sidewall (102), an inner corner covering portion (407) covering the inner corner of the short side endwall (103) and the long sidewall (102), and an outer corner covering portion (408) covering the outer corner of the short side endwall (103) and the long sidewall (102).

4. A connector assembly, characterized in that, Includes the male connector as described in claim 3 and a female connector detachably electrically connected to the male connector, the female connector comprising: The female insulating base (5) includes a pair of oppositely arranged long side structures (502), a pair of oppositely arranged short side structures (503), and a central island structure (501) that cooperates with the central slot (101) of the male insulating base (1). The female connector conductive terminals include a female connector signal terminal (6) and a female connector power terminal (7) embedded in the female connector terminal slot between the long side structure (502) and the central island structure (501). The female base protective shell (8) includes an end protection portion covering the upper end of the female insulating base (5) and a cap portion (806) covering the end of the central island structure (501), and a connecting and fixing portion (809) located on the inner bottom surface of the female insulating base (5) to connect the end protection portion and the central island protection portion into one unit.

5. A connector assembly according to claim 4, characterized in that: The end protection portion includes a top wall protection portion (801) that fully covers the top surface of the short side structure (503) and partially covers the top surface of the long side structure (502), an inner wall protection portion (802) that fully covers the inner side of the short side structure (503) and partially covers the inner side of the long side structure (502), an outer wall protection portion (803) that fully covers the outer side of the short side structure (503) and partially covers the outer side of the long side structure (502), an inner corner protection portion (804) covering the inner corners of the short side structure (503) and the long side structure (502), and an outer corner protection portion (805) covering the outer corners of the short side structure (503) and the long side structure (502).

6. A connector assembly according to claim 5, characterized in that: The connecting fixing part (809) is the bottom edge of the outer wall protection part (803) of the outer side of the short side structure (503) extending horizontally inward and is integrally connected with the cap part (806). The connecting fixing part (809) has elastic contact parts (810) extending vertically upward on both sides.

7. A connector assembly according to claim 5, characterized in that: The connecting fixing part (809) is the bottom edge of the inner wall protection part (802) of the inner side of the short side structure (503) extending horizontally inward and is integrally connected with the cap part (806). The outer wall protection part (803) of the long side structure (502) is provided with an elastic abutment part (814) that bends inward and extends upward.

8. A connector assembly according to claim 4, characterized in that: The male seat protective shell (4) is also provided with a fastening groove (410) on its inner and outer sides. Correspondingly, the inner wall of the end protection part and the outer wall of the cap part (806) are respectively provided with a first fastening protrusion (807) and a second fastening protrusion (808).

9. A connector assembly according to claim 8, characterized in that: The female power terminal (7) is integrally bent and formed, including a retaining part (701) embedded in the female terminal groove, a welding foot (702) extending outward from the female insulating base (5), a first contact arm (703) extending inward from the female insulating base (5) for contacting the outer side cover (406) of the male protective shell (4), a second contact arm (704) for contacting the male power terminal (3) inside the male protective shell (4), and a connecting arm (706) for connecting the first contact arm (703) and the second contact arm (704). The end of the second contact arm (704) is bent and formed to have a contact head (705) that cooperates with the fastening groove (410) on the inner side of the male protective shell (4). The first contact arm (703) is provided with a third fastening protrusion (707) that cooperates with the fastening groove (410) on the outer side of the male protective shell (4).

10. A connector assembly according to any one of claims 4-9, characterized in that: The male conductive terminal and the male protective shell (4) are both made of metal and are fixed together with the male insulating base (1) by inlay molding; the female conductive terminal and the female protective shell (8) are both made of metal and are fixed together with the male insulating base (1) by inlay molding.

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