Male seat connector and connector assembly

Abstract

The utility model 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 utility model, 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] The utility model belongs to the technical field of electric connectors, and in particular relates to a board-to-board connector. Background Art

[0002] The board-to-board (Board to Board) electrical connector assembly is a commonly used connection element in electronic products. Its function is to establish an electrical connection between two circuit boards. It is mainly composed of a female connector and a male connector. The female connector is usually welded on one circuit board, while the male connector is welded on another circuit board. The female connector and the male connector have a corresponding number of conductive terminals for transmitting electronic signals and electricity. By plugging the female and male connectors, the 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 Fig.10 As shown, the socket connector and connector assembly with publication number CN219843174U, in the existing board-to-board connector assembly, the end protection part and the center island protection part are of split design, and 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, and cannot provide all-round protection. There is a risk of deformation after repeated plugging and unplugging, and the covering gaps at the corners also lead to poor electromagnetic shielding effect. Moreover, due to the small covering area, the current flow area and the heat dissipation area are also small, and it is difficult to conduct larger current. In addition, there are fewer snap-fit ​​points, and two snap-fit ​​points are provided near the two ends, which cannot fully guarantee the connection reliability and stability of the male connector and the female connector after being plugged into each other.

[0004] Therefore, it is necessary to improve the existing connector socket to further enhance the mating stability, anti-electromagnetic interference, high current conducting capacity, structural strength and service life of the board-to-board connector. Utility Model Content

[0005] The purpose of the utility model is to provide a male socket connector and a connector assembly to solve the deficiencies of the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A male connector comprises a male insulating base, a male conductive terminal and a male protective shell, wherein the male insulating base comprises a rectangular central slot located in the middle, a pair of oppositely arranged long side walls, and a pair of oppositely arranged short side end walls; the male conductive terminal comprises a male signal terminal and a male power terminal embedded in a male terminal groove in the middle of the two long side walls; the male protective shell comprises an end wall protection portion covering the upper part of the short side end wall, a side wall protection portion partially wrapped around the upper part of the long side wall 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 with 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 surface covering portion covering the inner surface of the short side end wall, and an end wall outer surface covering portion covering the outer surface of the short side end wall.

[0009] Furthermore, the side wall protection portion is an extension of the end wall covering portion in the direction of the long side wall, including a side wall top surface covering portion that partially covers the top surface of the long side wall, a side wall inner surface covering portion that partially covers the inner surface of the long side wall, a side wall outer surface covering portion that partially covers the outer surface of the long side wall, an inner corner covering portion covering the inner corners of the short side end wall and the long side wall, and an outer corner covering portion covering the outer corners of the short side end wall and the long side wall.

[0010] Furthermore, the utility model 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, a female conductive terminal and a female protective shell, the female insulating base comprising a pair of relatively arranged long side structures, a pair of relatively arranged short side structures and a middle island structure matching with the central slot of the male insulating base; the female conductive terminal comprising a female signal terminal and a female power terminal embedded in a female terminal groove between the long side structure and the middle island structure; the female protective shell comprising an end protection portion covering the upper end of the female insulating base and a cap portion covering the end of the middle island structure, and a connecting and fixing portion located on the inner bottom surface of the female insulating base to connect the end protection portion with the middle island protection portion as one.

[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 surface of the short side structure and partially covers the inner side surface of the long side structure, an outer wall protection portion that fully covers the outer side surface of the short side structure and partially covers the outer side surface 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 portion is a horizontal inward extension of the bottom edge of the outer wall protection portion on the outer side surface of the short side structure, and is integrally connected to the cap portion. Elastic contact portions extending vertically upward are provided on both sides of the connecting and fixing portion.

[0013] Furthermore, the connecting and fixing portion is a horizontal inward extension of the bottom edge of the inner wall protection portion on the inner side of the short side structure, and is integrally connected to the cap portion, and the outer wall protection portion on the outer side of the long side structure is provided with an elastic abutment portion that bends inward and extends upward.

[0014] Furthermore, snap-fit ​​grooves are provided on the inner and outer side surfaces of the male seat protective shell, and correspondingly, a first snap-fit ​​protrusion and a second snap-fit ​​protrusion are respectively provided on the inner wall of the end protection portion and the outer wall of the cap portion.

[0015] Furthermore, the female socket power terminal is integrally bent and formed, including a retaining portion embedded in the female socket terminal groove, a welding foot extending toward the outside of the female insulating base, a first contact arm extending toward the inside of the female insulating base for contacting the outer side surface covering portion of the side wall of the male socket protective shell, a second contact arm for contacting the male socket power terminal in the male socket protective shell, and a connecting arm for connecting the first contact arm with the second contact arm, the end of the second contact arm is bent to form a contact head that cooperates with the snap-fit ​​groove on the inner side surface of the male socket protective shell, and the first contact arm is pre-set with a third snap-fit ​​protrusion that cooperates with the snap-fit ​​groove on the outer side surface of the male socket protective shell.

[0016] Furthermore, the male conductive terminal and the male protective shell are both made of metal materials and are fixed together with the male insulating base by means of inlay molding; the female conductive terminal and the female protective shell are both made of metal materials and are fixed together with the male insulating base by means of inlay molding.

[0017] Compared with the prior art, the male connector and connector assembly provided by the utility model have the following beneficial technical effects:

[0018] 1. The male power terminal of the utility model is integrated with the male protective shell, and the cap part of the island structure of the female connector and the female protective shell are integrated, and there is no need to assemble the shell, which greatly saves assembly process and cost.

[0019] 2. The male seat protective shell and the female seat protective shell of the utility model are all-inclusive seamless metal protective parts formed by a stretching process, which can provide all-round protection for the inner and outer corners of the insulating base. They are less likely to deform during the plugging and unplugging process, the insulating base is less likely to wear, have a longer service life, and have better electromagnetic shielding performance.

[0020] 3. The end wall protection part and the bottom of the side wall protection part of the male socket protection shell of the utility model are also connected as a whole through a connecting plate, which not only enhances the structural strength of the male socket protection shell, but also effectively increases the current flow area of ​​the connector, which can not only pass a larger current, but also has better heat dissipation.

[0021] 4. The four-sided contact parts of the male connector and the female connector of the utility model are provided with multiple snap-fit ​​points, which effectively enhances the mechanical plug-in stability and electrical connection reliability.

[0022] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0024] Figure 1 A schematic structural diagram of a connector assembly provided by an embodiment of the utility model;

[0025] Figure 2 A cross-sectional view of a connector assembly along line AA provided by an embodiment of the utility model;

[0026] Figure 3 A cross-sectional view of a connector assembly along line BB provided by an embodiment of the utility model;

[0027] Figure 4 A schematic diagram of the structure of a male connector provided by an embodiment of the utility model;

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

[0029] Figure 6 A schematic diagram of the structure of a female connector provided by an embodiment of the utility model;

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

[0031] Figure 8 A schematic diagram of the structure of a male socket protective shell in a male socket connector provided by an embodiment of the utility model;

[0032] Fig. 9 A schematic diagram of the structure of a female socket protective shell in a female socket connector provided in an embodiment of the utility model;

[0033] Fig.10A schematic structural diagram of an alternative solution for a female socket protective shell in a female socket connector provided in an embodiment of the utility model.

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0035] 1-male insulating base, 101-central slot, 102-long side wall, 103-short side end wall, 2-male signal terminal, 3-male power terminal, 4-male protective shell, 401-end wall top surface covering part, 402-end wall inner side covering part, 403-end wall outer side covering part, 404-side wall top surface covering part, 405-side wall inner side covering part, 406-side wall outer side covering part, 407-inner corner covering part, 408-outer corner covering part, 409-connecting plate, 410-snap-in groove, 5-female insulating base, 501-island structure, 502-long side structure, 503-short side structure, 504-pair slot, 6-female Socket signal terminal, 7-female socket power terminal, 701-holding portion, 702-welding foot, 703-first contact arm, 704-second contact arm, 705-contact head, 706-connecting arm, 707-third snap-fit ​​protrusion, 8-female socket protective shell, 801-top wall protection portion, 802-inner wall protection portion, 803-outer wall protection portion, 804-inner corner protection portion, 805-outer corner protection portion, 806-cap portion, 807-first snap-fit ​​protrusion, 808-second snap-fit ​​protrusion, 809-connecting and fixing portion, 810-elastic contact portion, 811-center island cap, 812-hook glue portion, 813-connecting piece, 814-elastic abutment portion. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] like Figure 1 As shown, an embodiment of the utility model provides a connector assembly, including a male connector and a female connector detachably 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 materials and are directly fixed to the male insulating base 1 by insert injection molding, saving assembly steps and costs.

[0039] The male insulating base 1 is the basic part of the male connector, and its main body adopts a rectangular box structure design, including a rectangular central slot 101 located in the middle, a pair of oppositely arranged long side walls 102, and a pair of oppositely arranged short side end walls 103. As a mounting base for other components, it provides a physical support and plays an electrical insulation role, which can isolate each male conductive terminal so that each male conductive terminal will not interfere with each other. The male conductive terminal, as the electrical connection part of the male connector, is made of elastic metal sheets. There are two groups of male conductive terminals, which are symmetrically embedded in the male terminal grooves in the middle of the two long side walls 102. Each group of male conductive terminals includes a male signal terminal group 2 composed of a plurality of male signal terminals 2 arranged side by side with equal spacing and two male power terminals 3 located on both sides of the male signal terminal group 2. The welding end of the male conductive terminal passes through the bottom plate of the male insulating base 1 and is exposed outside the male insulating base 1, which is used to connect the circuit board to realize the transmission of electrical signals.

[0040] like Figure 4 and Figure 8 As shown, the male seat protection shell 4 is integrally formed by a stretching process, and includes an end wall protection portion and a side wall protection portion. The end wall protection portion is covered above the short side end wall 103, and specifically 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 surface of the short side end wall 103, and an end wall outer side surface covering portion 403 that fully covers the outer side surface of the short side end wall 103. The side wall protection portion is located at both ends of the end wall protection portion and extends along the long side wall 102 toward the direction of the male socket conductive terminal, partially wrapping the long side wall 102 while being integrally connected to the male socket power terminal 3. The side wall protection portion specifically includes a side wall top surface covering portion 404 partially covering the top surface of the long side wall 102, a side wall inner surface covering portion 405 partially covering the inner surface of the long side wall 102, a side wall outer surface covering portion 406 partially covering the outer surface of the long side wall 102 and integrally connected to the male socket power terminal 3, an inner corner covering portion 407 covering the inner corner of the short side end wall 103 and the long side wall 102, and an outer corner covering portion 408 covering the outer corner of the short side end wall 103 and the long side wall 102. By adopting this fully covered structural design, not only the overall structural strength of the connector is improved, it is more wear-resistant and has a longer service life, but also compared with the traditional stamping or bending process, the male seat protective shell 4 formed by stretching of the utility model has no gaps at the corners, and has better electromagnetic shielding performance. And as a preferred embodiment, the inner bottom surface of the male insulating base 1 is also covered with a connecting plate 409, and the connecting plate 409 connects the end wall protection part and the bottom of the side wall protection part as a whole, effectively increasing the flow area of ​​the connector, not only can it pass a larger current, but also has better heat dissipation.

[0041] like Figure 6 and Figure 7 As shown, the female connector includes a female insulating base 5, a female conductive terminal, and a female protective shell 8. The female conductive terminal and the female protective shell 8 are both made of metal materials. Similarly, the female conductive terminal and the female protective shell 8 are also directly molded and fixed together with the female insulating base 5 by insert injection molding.

[0042] like Figure 6 and Figure 7 As shown, the female insulating base 5 is the basic part of the female connector, and its main body adopts a rectangular box structure design. As a mounting base for other components, it provides a physical support and plays an electrical insulation role, which can isolate each female conductive terminal so that each female conductive terminal will not interfere with each other. The female insulating base 5 includes a pair of relatively arranged long side structures 502, a pair of relatively arranged short side structures 503, and an island structure 501 that is integrated in the middle of the bottom plate of the insulating base and protrudes upward. The size of the island structure 501 matches the central slot 101 of the male insulating base 1, and the island structure 501 is separated from the long side structure 502 and the short side structure 503 by a certain distance, forming a U-shaped slot 504 for plugging with the male connector.

[0043] The female conductive terminal includes a female signal terminal 6 and a female power terminal 7. There are multiple female signal terminals 6, which are arranged side by side and spaced in the female terminal groove between the long side structure 502 and the middle island structure 501 to form a female signal terminal 6 group. The female power terminals 7 are located on both sides of the female signal terminal 6 group. The female conductive terminal is also made of elastic metal sheet, as the main working part of the connector, one end of which can form a close contact with the male conductive terminal through the elastic force generated by elastic deformation when the male connector is inserted into the female connector, completing the electrical connection function. The welding end of the female conductive terminal passes through the bottom plate of the female insulating base 5 and is exposed outside the female insulating base 5, which is used to connect the circuit board to realize the transmission of electrical signals.

[0044] like Figure 6 and Fig. 9As shown, the female seat protection shell 8 is an integrated component formed by stretching and bending a metal plate, and includes an end protection portion and a mid-island protection portion. Among them, the end protection portion is coated above the end of the female insulating base 5, and is used to strengthen the structural strength of the insulating base 1 to prevent the connector from being damaged when it is impacted by external forces. 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 surface of the short side structure 503 and partially covers the inner side surface of the long side structure 502, an outer wall protection portion 803 that fully covers the outer side surface of the short side structure 503 and partially covers the outer side surface of the long side structure 502, an inner corner protection portion 804 that covers the inner corners of the short side structure 503 and the long side structure 502, and an outer corner protection portion 805 that covers the outer corners of the short side structure 503 and the long side structure 502. By adopting this full-enclosed design that covers both the inner and outer corners, the mechanical strength of the female insulating base 5 can be improved, and the plug-in connection makes it less prone to wear and deformation, reducing the wear of the connector assembly during the plug-in and unplug process, and increasing the service life of the female connector. At the same time, it can also cooperate with the male protective shell 4 on the male connector to improve the electromagnetic shielding performance of the connector assembly.

[0045] The island protection part includes a cap part 806 and a connection fixing part 809. The cap part 806 completely covers the end of the island structure 501 to protect the end of the island structure 501. The connection fixing part 809 is located on the inner bottom surface of the female insulating base 5, connecting the end protection part with the island protection part as a whole, further simplifying the assembly process, and effectively improving the structural strength of the female base protection shell 8, increasing the flow area of ​​the connector. Fig. 9 As shown, specifically in this embodiment, the connecting and fixing portion 809 is a horizontal inward extension of the bottom edge of the outer wall protection portion 803 on the outer side of the short side structure 503, and is integrally connected to the cap portion 806, simplifying the assembly process while making the end protection portion and the island protection portion form a whole. The connecting and fixing portion 809 is provided with elastic contact portions 810 extending vertically upward on both sides, which are used to make electrical contact with the side wall protection portion of the male seat protection shell 4.

[0046] It is worth mentioning that Fig.10As shown, as an alternative, the connecting piece 813 (equivalent to the connecting and fixing part 809 in the first embodiment) 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 connected to the island cap 811 (equivalent to the cap part 806 in the first embodiment), 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 (equivalent to the elastic contact part 810 in the first embodiment) at the end of the female connector is an extension of the outer wall protection part 803 on the outer side of the long side structure 502 and is bent upward to form a contact terminal that is electrically in contact with the side wall protection part of the male protective shell 4. In addition, it is obvious that a hook glue 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 to prevent loosening.

[0047] like Figure 2 As shown, as a preferred embodiment, an anti-slip structure is also provided on the side wall where the female seat protective shell 8 contacts the male seat protective shell 4. The anti-slip structure specifically includes a snap-fit ​​groove 410 and a snap-fit ​​protrusion matching the snap-fit ​​groove 410, the snap-fit ​​groove 410 is provided on the inner and outer side surfaces of the male seat protective shell 4, and the snap-fit ​​protrusion includes a first snap-fit ​​protrusion 807 provided on the inner wall of the end protection portion (i.e., the inner wall protection portion 802) and a second snap-fit ​​protrusion 808 provided on the outer wall of the cap portion 806 (or the island cap 811) opposite to the first snap-fit ​​protrusion 807. In order to make the male connector and the female connector snap-fit ​​more tightly, the female power terminal 7 is integrally bent and formed and adopts a double-point contact design, such as Figure 3As shown, the female socket power terminal 7 includes a retaining portion 701 embedded in the female socket terminal groove, a welding foot 702 extending toward the outside of the female insulating base 5, a first contact arm 703 extending toward the inside of the female insulating base 5 for contacting the outer side surface covering portion 406 of the side wall of the male socket protective shell 4, a second contact arm 704 for contacting the male socket power terminal 3 in the male socket protective shell 4, and a connecting arm 706 for connecting the first contact arm 703 with the second contact arm 704, the end of the second contact arm 704 is bent to form a contact head 705 that matches the snap-fit ​​groove 410 on the inner side of the male socket protective shell 4, and the first contact arm 703 is preset with a third snap-fit ​​protrusion 707 that matches the snap-fit ​​groove 410 on the outer side of the male socket 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, and through multi-point contact, the anti-electromagnetic interference performance of the connector can be further improved.

[0048] The above-mentioned embodiments only express the implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

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

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

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

4. A connector assembly, characterized in that: The invention comprises the male connector according to claim 3 and a female connector detachably electrically connected to the male connector, wherein the female connector comprises: A female insulating base (5), the female insulating base (5) comprising 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 matches the central slot (101) of the male insulating base (1); A female socket conductive terminal, comprising a female socket signal terminal (6) and a female socket power terminal (7) embedded in a female socket terminal groove between the long side structure (502) and the island structure (501); The female base protection shell (8) comprises an end protection portion covering the upper end of the female insulating base (5), a cap portion (806) covering the end of the middle island structure (501), and a connecting and fixing portion (809) located on the inner bottom surface of the female insulating base (5) and connecting the end protection portion and the middle island protection portion into one.

5. A connector assembly according to claim 4, characterized in that: The end protection portion comprises 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 surface of the short side structure (503) and partially covers the inner side surface of the long side structure (502), an outer wall protection portion (803) that fully covers the outer side surface of the short side structure (503) and partially covers the outer side surface of the long side structure (502), an inner corner protection portion (804) that covers the inner corners of the short side structure (503) and the long side structure (502), and an outer corner protection portion (805) that covers 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 and fixing portion (809) is a horizontal inward extension of the bottom edge of the outer wall protection portion (803) on the outer side surface of the short side structure (503), and is integrally connected to the cap portion (806). Elastic contact portions (810) extending vertically upward are provided on both sides of the connecting and fixing portion (809).

7. A connector assembly according to claim 5, characterized in that: The connecting and fixing portion (809) is a horizontal inward extension of the bottom edge of the inner wall protection portion (802) on the inner side of the short side structure (503), and is integrally connected to the cap portion (806). The outer wall protection portion (803) on the outer side of the long side structure (502) is provided with an elastic abutment portion (814) that is bent 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 snap-fit ​​grooves (410) on the inner and outer side surfaces, and correspondingly, a first snap-fit ​​protrusion (807) and a second snap-fit ​​protrusion (808) are respectively arranged on the inner wall of the end protection portion and the outer wall of the cap portion (806) in opposition to each other.

9. A connector assembly according to claim 8, characterized in that: The female power terminal (7) is integrally bent and formed, and comprises a retaining portion (701) embedded in the female terminal groove, a welding foot (702) extending toward the outside of the female insulating base (5), a first contact arm (703) extending toward the inside of the female insulating base (5) for contacting the outer side surface covering portion (406) of the side wall of the male protective shell (4), a second contact arm (704) for contacting the male power terminal (3) in the male protective shell (4), and a connecting arm (706) for connecting the first contact arm (703) with the second contact arm (704), the end of the second contact arm (704) being bent and formed with a contact head (705) matching with a snap-fit ​​groove (410) on the inner side surface of the male protective shell (4), and the first contact arm (703) being preset with a third snap-fit ​​protrusion (707) matching with the snap-fit ​​groove (410) on the outer side surface of the male protective shell (4).

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

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