Board-to-Board Connectors

Abstract

A board-to-board connector, used for electrically connecting to a docking circuit board, comprises an insulating body, a plurality of conductive terminals and a protective frame, wherein the plurality of conductive terminals are arranged on the insulating body along the length direction of the insulating body, the protective frame is combined with both ends of the insulating body in the length direction and is located outside the arrangement range of the plurality of conductive terminals, each of the protective frames comprises a first protective frame and a second protective frame, the first protective frame and the second protective frame are independent of each other, the first protective frame is combined with the insulating body by integral molding, and the second protective frame is combined with the insulating body by assembly. The socket connector of the present application has better structural stability.

Description

[Technical field]

[0001] The present application relates to a board-to-board connector. [Background technology]

[0002] A board-to-board connector usually consists of two parts: a plug and a socket. Both the plug and the socket consist of a plastic body and a conductive terminal fixed on the plastic body. The plastic body mainly serves to insulate and position the conductive terminal, and the conductive terminal mainly serves to transmit signals. Usually, the plug and socket of the existing board-to-board connector will also add a protective bracket to enhance their own strength. At the same time, the protective bracket can also serve as a retaining force when the plug and the socket are connected. In some prior arts, the protective bracket can also be used as a current terminal. Therefore, the requirements for the bonding strength between the protective bracket and the plastic body, the length of the elastic arm force arm on the protective bracket, and the overall structural strength and stability of the board-to-board connector combined with the protective bracket are relatively high, especially under the current design trend of increasingly miniaturized board-to-board connectors.

[0003] Therefore, it is necessary to propose a new design form to achieve better results. [Summary of the invention]

[0004] The purpose of the present application is to provide a new board-to-board connector with better structural stability.

[0005] The purpose of this application is achieved through the following technical solutions:

[0006] A board-to-board connector, used for electrically connecting to a docking circuit board, comprises an insulating body, a plurality of conductive terminals and a protective frame, wherein the plurality of conductive terminals are arranged on the insulating body along the length direction of the insulating body, and the protective frame is combined with both ends of the insulating body in the length direction and is located outside the arrangement range of the plurality of conductive terminals.

[0007] Each of the protection frames includes a first protection frame and a second protection frame, the first protection frame and the second protection frame are independent of each other, the first protection frame is combined with the insulating body by integral molding, and the second protection frame is combined with the insulating body by assembly.

[0008] Further, along the plugging and unplugging direction of the docking connector, the first protection frame partially overlaps with the second protection frame.

[0009] Furthermore, the insulating body forms an insertion space for inserting a docking connector, and the insulating body includes a bottom wall, two side walls extending upward on both sides of the bottom wall along the length direction of the bottom wall, and an island wall extending upward from the middle position of the bottom wall, and a plurality of the conductive terminals are respectively arranged on the two side walls, and the first protective frame is formed with an island wall protection portion, and the island wall protection portion is buried in the end surface of the island wall in the length direction.

[0010] Furthermore, the upper end edge of the island wall protection portion away from one end of the docking circuit board is further folded back toward the docking circuit board and extends to form an embedded portion, and the embedded portion is correspondingly buried in both ends of the island wall along the length direction, and the embedded portion is further extended at one end adjacent to the docking circuit board to form an embedded docking portion protruding outside the lower surface of the bottom wall.

[0011] Furthermore, the first protective frame includes a bottom wall support portion integrally connected to the lower end edge of the island wall protection portion, the bottom wall support portion is buried at both end positions in the length direction of the bottom wall, the bottom wall support portion is exposed upward into the plug-in space, and the bottom wall support portion is exposed downward to the lower surface of the bottom wall against which the circuit board is docked.

[0012] Furthermore, the first protection frame includes a side wall protection portion, the side wall protection portion is integrally connected to the bottom wall support portion, the side wall protection portion is embedded in the inner wall surface at both ends of the side wall in the length direction and is located outside the arrangement range of the plurality of conductive terminals.

[0013] Furthermore, the side wall protection portion is bent at one end away from the docking circuit board to form a positioning portion, and the positioning portion is correspondingly buried in the upper surface position of the side wall away from the docking circuit board. The positioning portion is at least partially exposed outside the upper surface of the side wall and forms a positioning upper surface. The two ends in the width direction of the insulating body are recessed upward on the lower surface to form positioning grooves, and the positioning portion is at least partially exposed downward from the insulating body through the positioning groove to form a positioning lower surface.

[0014] Furthermore, the insulating body also includes two end walls extending upward on both sides of the bottom wall along the width direction of the bottom wall, and the bottom wall, the two side walls, the two end walls and the island wall jointly define the plug-in space that opens upward, and the first protective frame also includes an end wall protection portion corresponding to the inner wall surface buried in the end wall, and the end of the end wall protection portion away from the docking circuit board is further bent and extended to form an end wall docking portion protruding outside the end wall.

[0015] Furthermore, the second protective frame includes an upper end wall portion, a docking foot portion, a main body portion and an elastic arm portion, the upper end wall portion at least covers the upper surface of the end portion of the side wall along the length direction, the docking foot portion is used to be fixed to the docking circuit board, the main body portion integrally connects the upper end wall portion and the docking foot portion, the elastic arm portion is formed by bending and extending the docking foot portion, the elastic arm portion is attached to at least a portion of the inner wall surface of the side wall, at least a portion of the elastic arm portion can be elastically deformed along the width direction of the insulating body 1, and the elastic arm portion is formed with a contact portion that at least partially protrudes into the plug-in space along the width direction of the insulating body.

[0016] Furthermore, the upper surface of the upper end wall of the second protection frame is higher than the upper surface of the first protection frame and the side wall to form a step difference, and the inner side of the upper end wall adjacent to the plug-in space is formed with an arc-shaped guide surface through a drawing process.

[0017] Compared with the prior art, the board-to-board connector of the present application has better structural stability.

Brief Description of the Drawings

[0018] Figure 1 It is a three-dimensional schematic diagram of a first embodiment of the board-to-board connector of the present application;

[0019] Figure 2 It is a partial three-dimensional exploded view of the first embodiment of the board-to-board connector of the present application, which specifically shows a three-dimensional schematic diagram after one of the protection frames is separated from the insulating body;

[0020] Figure 3 It is a partial three-dimensional exploded view of the first embodiment of the board-to-board connector of the present application, which specifically shows a three-dimensional schematic diagram after one of the protection frame and the support frame is separated from the insulating body;

[0021] Figure 4 for Figure 3 A three-dimensional diagram from another angle;

[0022] Figure 5 yes Figure 1 Sectional view along line AA;

[0023] Figure 6 yes Figure 5 The cross-sectional view shown is a front view along the length direction of the insulating body;

[0024] Figure 7 A three-dimensional schematic diagram of another embodiment of a protection frame of a board-to-board connector of the present application;

[0025] Figure 8 yes Figure 7 A three-dimensional schematic diagram of the middle protection frame viewed from another angle;

[0026] Fig. 9 yes Figure 7 Bottom view of the middle protection frame;

[0027] Fig.10 It is a three-dimensional schematic diagram of a second embodiment of the board-to-board connector of the present application;

[0028] Fig.11 For oneself Fig.10 Sectional view along the midline BB;

[0029] Fig.12It is a partial three-dimensional exploded view of the second embodiment of the board-to-board connector of the present application, which specifically shows a three-dimensional schematic diagram after one of the protection frames is separated from the insulating body;

[0030] Fig.13 for Fig.12 A three-dimensional diagram from another angle. [Specific implementation method]

[0031] The following will be combined with the attached Figures 1 to 13 The specific implementation of the board-to-board connector of the present application is introduced.

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0033] In addition, in the description of the application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "combined" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the application can be understood according to specific circumstances.

[0034] In the description of the present application, it should be understood that the terms "include" and "have" and any variations thereof used herein are intended to be combined with non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0035] Please refer to Figures 1 to 6 As shown, the first embodiment of the board-to-board connector disclosed in the present application is used to electrically connect to a docking circuit board. The board-to-board connector includes an insulating body 1, a plurality of conductive terminals 2 and a protective frame 3. The plurality of conductive terminals 2 are arranged on the insulating body 1 along the length direction of the insulating body 1, and the protective frame 3 is combined at both ends of the length direction of the insulating body 1 and is located outside the arrangement range of the plurality of conductive terminals 2.

[0036] Please refer to Figures 1 to 6As shown, the insulating body 1 is formed with a plug-in space 10 and includes a bottom wall 11 that fits with the docking circuit board, two side walls 12 extending upward from both sides of the bottom wall 11 along the length direction of the bottom wall 11, two end walls 13 extending upward from both sides of the bottom wall 11 along the width direction of the bottom wall 11, and an island wall 14 extending upward from the middle position of the bottom wall 11, and a plurality of the conductive terminals 2 are arranged on the two side walls 12. The bottom wall 11, the two side walls 12, the two end walls 13 and the island wall 14 jointly define a plug-in space 10 that opens upward.

[0037] Please refer to Figures 1 to 6 As shown, each of the protection frames 3 includes a first protection frame 301 and a second protection frame 302. The first protection frame 301 and the second protection frame 302 are independent of each other. The first protection frame 301 is combined with the insulating body 1 by integral molding, and the second protection frame 302 is combined with the insulating body 1 by assembly.

[0038] Please refer to Figures 2 to 6 As shown, the first protection frame 301 is formed with an island wall protection portion 3011, and the island wall protection portion 3011 is buried on the end surface of the island wall 14 in the length direction. The island wall protection portion 3011 is used to protect the structural strength of the island wall 14, and can protect the island wall 14 from being scratched and damaged when the docking connector is inserted. The upper end edge of the island wall protection portion 3011 away from one end of the docking circuit board is further folded back toward the docking circuit board and extended to form an embedded portion 3014, and the embedded portion 3014 is correspondingly buried in the two ends of the island wall 14 along the length direction. The embedded portion 3014 is further extended from one end of the docking circuit board adjacent to the docking circuit board to form an embedded docking portion 3015 protruding outside the lower surface of the bottom wall 11. The embedded portion 3014 is used to increase the bonding strength between the first protection frame 301 and the insulating body 1, and the embedded docking portion 3015 is used for positioning the mold core on the first protection frame 301 during integral molding, and the embedded docking portion 3015 can be used to be welded and fixed with the docking connector.

[0039] Furthermore, the first protection frame 301 also includes a bottom wall support portion 3012 integrally connected to the lower edge of the island wall protection portion 3011, the bottom wall support portion 3012 is buried at both ends of the length direction of the bottom wall 11, the bottom wall support portion 3012 is exposed upward into the plug-in space 10, and the bottom wall support portion 3012 is exposed downward to the bottom wall 11 against the lower surface of the docking circuit board for mold core positioning during integral molding. The bottom wall support portion 3012 is used to increase the structural strength of the bottom wall.

[0040] Furthermore, the first protection frame 301 includes a side wall protection portion 3013, the side wall protection portion 3013 is integrally connected with the bottom wall support portion 3012, and the side wall protection portion 3013 is embedded in the inner wall surface of the two ends of the side wall 12 in the length direction and is located outside the arrangement range of the plurality of conductive terminals 2. The side wall protection portion 3013 is bent at one end away from the docking circuit board to form a positioning portion 3016, and the positioning portion 3016 is correspondingly embedded in the upper surface position of the side of the side wall 12 away from the docking circuit board. The positioning portion 3016 is at least partially exposed to the outside of the upper surface of the side wall 12 and forms a positioning upper surface 30161. The two ends of the insulating body 1 in the width direction are recessed upward on the lower surface to form a positioning groove 111, and the positioning portion 3016 is at least partially exposed downward to the outside of the insulating body 1 through the positioning groove 111 to form a positioning lower surface 30162. The positioning upper surface 30161 and the positioning lower surface 30162 are used for positioning the mold core during integral molding. At the same time, the positioning portion 3016 can be used to guide the docking connector to be inserted into the plug-in space 10. In addition, the side wall protection portion 3013 can enhance the structural strength of the side wall.

[0041] Furthermore, the first protection frame 301 also includes an end wall protection portion 3017 correspondingly buried in the inner wall surface of the end wall 13, the end wall protection portion 3017 is integrally connected with the bottom wall support portion 3012, and the end of the end wall protection portion 3017 away from the docking circuit board is further bent and extended to form an end wall docking portion 3018 protruding out of the end wall 13. The end wall protection portion 3017 is used to increase the structural strength of the end wall 13, and the end wall docking portion 3018 is used for mold core positioning during integral molding, and the end wall docking portion 3018 is also a material connection position with the material strip. In some embodiments, the end wall docking portion 3018 can also be used to make electrical contact with the second protection frame 302. Along the plug-in and unplug direction of the docking connector, the first protection frame 301 and the second protection frame 302 partially overlap. In this application, specifically: the protection portion 3017 and the end wall docking portion 3018 partially overlap with the end wall upper wall portion 312 described below along the plug-in and unplug direction of the docking connector.

[0042] In the present application, a first protective frame 301 is provided to strengthen the strength of the insulating body 1, especially the structural strength of the two end positions of the insulating body 1 in the length direction. At the same time, the first protective frame 301 is designed to have a matching structure with the bottom wall 11, the side wall 12, the end wall 13 and the island wall 13, so that the overall structural strength between the bottom wall 11, the side wall 12, the end wall 13 and the island wall 13 is guaranteed. At the same time, the inner wall surfaces of the corresponding positions of the bottom wall 11, the side wall 12, the end wall 13 and the island wall 13 are strengthened, which can effectively prevent the insertion of the docking connector from hanging and damaging the insulating body 1.

[0043] Please refer to Figures 2 to 4 As shown, the second protective frame 302 includes an upper wall portion 31, a docking foot portion 32 and a main body portion (not numbered). The upper wall portion 31 is combined with the upper surface of both ends of the insulating body 1 in the length direction and is located outside the arrangement range of the plurality of conductive terminals 2. The docking foot portion 32 is used to be fixed to the docking circuit board. The main body portion is fixed to the insulating body 1. The second protective frame 302 also includes an elastic arm portion 34 formed by extending the docking foot portion 32, and the elastic arm portion 34 is used to elastically contact with the docking connector (not shown).

[0044] Please refer to Figures 2 to 4 As shown, specifically, the docking foot 32 connects the elastic arm 34 with the main body, and the main body connects the upper end wall 31 and the docking foot 32. The elastic arm 34 is combined with at least a portion of the inner wall surface of the side wall 12, and at least a portion of the elastic arm 34 can be elastically deformed along the width direction of the insulating body 1. The elastic arm 34 is formed with a contact portion 3404 that at least partially protrudes into the plug-in space 10 along the width direction of the insulating body 1. The contact portion 3404 is used to achieve electrical connection with the docking connector.

[0045] Please refer to Figure 2 and Figure 3 As shown, the main body includes an outer wall portion 331, and the outer wall portion 331 is combined with the outer wall surface position of the end of the side wall 12 along the length direction. The docking foot portion 32 is formed by bending and extending the edge of the outer wall portion 331 adjacent to the docking circuit board, and the elastic arm portion 34 is formed by bending and extending the edge of the docking foot portion 32. Along the width direction of the insulating body 1, the elastic arm portion 34 is formed by bending and extending the side of the docking foot portion 32 away from the outer wall portion 331, and the elastic arm portion 34 extends along the length direction of the insulating body 1. The outer wall portion 331 and the elastic arm portion 34 are arranged opposite to each other along the width direction of the insulating body 1.

[0046] Please refer to Figure 4 As shown, the elastic arm portion 34 includes a first elastic arm portion 3401 integrally connected to the docking foot portion 32, a bent arm portion 3403 and a second elastic arm portion 3402. The bent arm portion 3403 integrally connects the first elastic arm portion 3401 and the second elastic arm portion 3402. The first elastic arm portion 3401 and the second elastic arm portion 3402 form a step difference along the width direction of the insulating body 1. The spacing between the first elastic arm portion 3401 and the outer wall portion 331 is smaller than the spacing between the second elastic arm portion 3402 and the outer wall portion 331. Along the length direction of the insulating body 1, the first elastic arm portion 3401 is close to the end of the side wall 12, the second elastic arm portion 3402 is away from the end of the side wall 12, and the contact portion 3404 is formed on the second elastic arm portion 3402.

[0047] Please refer to Figures 1 to 4 As shown, the upper end wall portion 31 includes an integrally connected side wall upper wall portion 311 and an end wall upper wall portion 312. The side wall upper wall portion 311 is coupled to the upper surface of the end portion of the side wall 12 along the length direction. The end wall upper wall portion 312 is coupled to the upper surface of the end wall 13. Along the length direction of the insulating body 1, at least one end edge of the end wall upper wall portion 312 is bent downward and extended to form an end wall shielding portion 3121. The end wall shielding portion 3121 is coupled to the outer surface and / or inner surface of the end wall 13. The lower side edge of the end wall shielding portion 3121 forms a docking pin 31211. The docking pin 31211 is fixed to the docking circuit board.

[0048] Please refer to Figures 1 to 6 As shown, further, the upper surface of the upper end wall portion 31 of the second protection frame 302 is higher than the upper surface of the first protection frame 301 and the side wall 12 to form a step difference, and the inner side of the upper end wall portion 31 adjacent to the plug-in space 10 is formed with an arc-shaped guide surface 3101 through a drawing process. Such a design enables the first protection frame 301 to serve as the first layer of protection to protect the board-to-board connector, and at the same time, when the docking connector is inserted into the board-to-board connector for docking, it is first contacted with the first protection frame 301 and guided by the first protection frame 301. The second protection frame 302 plays a role of secondary guidance and protection. In addition, the protective frame 3 is designed to be two-piece, wherein the first protective frame 301 is fixed to the insulating body 1 by integral molding, and the second protective frame 302 is fixed to the insulating body 1 by assembly, which can reduce the difficulty of the process, because a single component (protective frame 3) with too complex a structure is not conducive to processing and manufacturing on the one hand, and is not conducive to assembly with the insulating body 1 on the other hand, and is also not conducive to the realization of the function. Designing a more complex component into two pieces, splitting and assembling the protective frame 3 according to the functional requirements of the protective frame 3 at different positions can better meet the overall performance requirements, and at the same time can reduce the difficulty of processing and process technology.

[0049] Please refer to Figure 7 , Figure 8 and Fig. 9As shown, another embodiment of the second protective frame 302 of the board-to-board connector of the present application is shown. The difference between this embodiment and the second protective frame 302 of the first embodiment lies in the structure of the elastic arm portion 34 and the connection position of the elastic arm portion 34 and the docking foot portion 32. Specifically, the elastic arm portion 34 is formed by bending and extending one end of the docking foot portion 32 along the length direction of the insulating body 1. The elastic arm portion 34 includes an elastic arm 341 and a bending arm 342. The elastic arm 341 and the outer wall portion 331 are arranged opposite to each other along the width direction of the insulating body 1. The bending arm 342 is used to connect the elastic arm 341 and the docking foot portion 32. The contact portion 3404 is formed on the elastic arm 341. In addition, the bending arm 342 is located at the end edge of the insulating body 1 along the length direction, and the extension plane of the bending arm 342 is perpendicular to the extension plane of the elastic arm 341. In addition, other structures of the second protection frame 302 are the same as those of the first embodiment, and the structures corresponding to the first embodiment share the same reference numerals in the drawings. The second protection frame 302 disclosed in this embodiment can also be combined with the insulating body 1 described in the first embodiment.

[0050] Please refer to Figures 10 to 13 As shown, it is the second embodiment of the board-to-board connector of the present application. The main difference between the second embodiment and the first embodiment lies in the structure of the second protective frame 302. Furthermore, the difference on the second protective frame 302 mainly lies in the structure of the elastic arm 34 and the connection position between the elastic arm 34 and the docking foot 32. Specifically, the elastic arm 34 includes a bending wall 342, a beam wall 343 and an elastic arm 341, and the bending wall 342 is formed by bending and extending an end edge of the docking foot 32 along the length direction of the insulating body 1 upward. The crossbeam wall 343 is formed by further bending and extending the bending wall 342. The crossbeam wall 343 is located between the upper end wall portion 31 and the upper surface of the side wall 12. The crossbeam wall 343 is arranged opposite to the docking foot 32 along the plugging and unplugging direction of the docking connector, and is arranged opposite to the upper end wall portion 31. The elastic arm 341 is formed by bending and extending a side edge of the crossbeam wall 343 adjacent to the plug-in space 10. The elastic arm 341 and the outer wall portion 331 are arranged opposite to each other along the width direction of the insulating body 1.

[0051] In the second embodiment, further, along the plugging and unplugging direction of the docking connector, a gap is formed between the beam wall 343 and the upper end wall portion 31, and a gap is formed between the beam wall 343 and the side wall 12, and the beam wall 343 can be elastically deformed along the plugging and unplugging direction of the docking connector.

[0052] The insulating body 1 in the second embodiment is basically the same as that in the first embodiment, except that some structural adjustments are made at the position corresponding to the elastic arm portion 34. In addition, other structures in the second embodiment are the same as those in the first embodiment. The structures corresponding to the first embodiment are labeled in the same way in the drawings and will not be described in detail here.

[0053] In the multiple embodiments disclosed in the present application, the docking foot 32 of the second protective frame 302 is used to be fixed to the docking circuit board welder. By designing the elastic arm 34 to be formed by directly bending and extending the docking foot 32, it is possible to ensure that the elastic displacement of the elastic arm 34 is not affected or interfered by other structures. When the docking connector is docked with the board-to-board connector, the pressure, impact, etc. of the docking connector on the second protective frame 302 will not be transmitted to the elastic arm 34. In particular, when the docking connector contacts or impacts the upper end wall 31, the elastic deformation or plastic deformation of the upper end wall 31 will not be transmitted to the elastic arm 34 due to the outer wall 331. In this way, the position of the elastic arm 34 can be kept quite stably within a controllable range, thereby improving the contact stability when the docking connector is docked with the board-to-board connector, especially the docking stability between the elastic arm 34 of the second protective frame 302 and the docking connector.

[0054] Except for the above differences, other structures in the second embodiment are basically the same as those in the first embodiment, and will not be described again. The structural description in the specification and the structural labels in the drawings are equally applicable.

[0055] In summary, the above are only preferred embodiments of the present application, and should not be used to limit the scope of the present application. That is, all simple equivalent changes and modifications made according to the claims and description of the present application should still belong to the present application.

Claims

1. A board-to-board connector, used for electrically connecting to a docking circuit board, comprising an insulating body, a plurality of conductive terminals and a protective frame, wherein the plurality of conductive terminals are arranged on the insulating body along the length direction of the insulating body, and the protective frame is combined with both ends of the insulating body in the length direction and is located outside the arrangement range of the plurality of conductive terminals, characterized in that: Each of the protection frames includes a first protection frame and a second protection frame, the first protection frame and the second protection frame are independent of each other, the first protection frame is combined with the insulating body by integral molding, and the second protection frame is combined with the insulating body by assembly; The insulating body forms a plug-in space for inserting a docking connector, the insulating body comprises a bottom wall, two side walls extending upward from both sides of the bottom wall along the length direction of the bottom wall, and an island wall extending upward from the middle position of the bottom wall, a plurality of the conductive terminals are arranged on the two side walls respectively, the first protection frame is formed with an island wall protection portion, and the island wall protection portion is buried on the end surface of the island wall in the length direction; The first protective frame includes a bottom wall support portion integrally connected to the lower end edge of the island wall protection portion, the bottom wall support portion is buried at both end positions in the length direction of the bottom wall, the bottom wall support portion is exposed upward into the plug-in space, and the bottom wall support portion is exposed downward to the lower surface of the bottom wall against which the circuit board is docked.

2. The board-to-board connector according to claim 1, wherein: Along the plugging and unplugging direction of the docking connector, the first protection frame partially overlaps with the second protection frame.

3. The board-to-board connector according to claim 1, wherein: The upper end edge of the island wall protection portion away from one end of the docking circuit board is further folded back toward the docking circuit board and extended to form an embedded portion, and the embedded portion is correspondingly buried in both ends of the island wall along the length direction, and the embedded portion is further extended from one end adjacent to the docking circuit board to form an embedded docking portion protruding outside the lower surface of the bottom wall.

4. The board-to-board connector according to claim 1, wherein: The first protection frame includes a side wall protection portion, the side wall protection portion is integrally connected to the bottom wall support portion, and the side wall protection portion is embedded in the inner wall surface at both ends of the side wall in the length direction and is located outside the arrangement range of the plurality of conductive terminals.

5. The board-to-board connector according to claim 4, wherein: The side wall protection portion is bent at one end away from the docking circuit board to form a positioning portion, and the positioning portion is correspondingly buried in the upper surface position of the side wall away from the docking circuit board. The positioning portion is at least partially exposed outside the upper surface of the side wall and forms a positioning upper surface. The two ends in the width direction of the insulating body are recessed upward on the lower surface to form positioning grooves, and the positioning portion is at least partially exposed downward from the insulating body through the positioning groove to form a positioning lower surface.

6. The board-to-board connector according to claim 1, wherein: The insulating body also includes two end walls extending upward on both sides of the bottom wall along the width direction of the bottom wall, and the bottom wall, the two side walls, the two end walls and the island wall jointly define the plug-in space opening upward, and the first protective frame also includes an end wall protection portion corresponding to the inner wall surface buried in the end wall, and the end of the end wall protection portion away from the docking circuit board is further bent and extended to form an end wall docking portion protruding outside the end wall.

7. The board-to-board connector according to any one of claims 1 to 6, characterized in that: The second protective frame includes an upper end wall portion, a docking foot portion, a main body portion and an elastic arm portion, wherein the upper end wall portion at least covers the upper surface of the end portion of the side wall along the length direction, the docking foot portion is used to be fixed to the docking circuit board, the main body portion integrally connects the upper end wall portion and the docking foot portion, the elastic arm portion is formed by bending and extending the docking foot portion, the elastic arm portion is attached to at least a portion of the inner wall surface of the side wall, at least a portion of the elastic arm portion can be elastically deformed along the width direction of the insulating body, and the elastic arm portion is formed with a contact portion that at least partially protrudes into the plug-in space along the width direction of the insulating body.

8. The board-to-board connector according to claim 7, wherein: The elastic arm portion includes an elastic arm and a bending arm, and the bending arm connects the elastic arm and the docking foot portion; The elastic arm can be elastically displaced along the width direction of the insulating body; The bending arm is located at the end edge of the insulating body along the length direction, and the extension plane of the bending arm is perpendicular to the extension plane of the elastic arm.

9. The board-to-board connector according to claim 7, wherein: The elastic arm portion includes a bending wall, a beam wall and an elastic arm, wherein the bending wall is formed by bending and extending an end edge of the docking foot portion along the length direction of the insulating body upward; The cross beam wall is formed by further bending and extending the bending wall, and the cross beam wall is located between the upper end wall portion and the upper surface of the side wall. The cross beam wall is arranged opposite to the docking foot along the plugging and unplugging direction of the docking connector. The elastic arm is formed by bending and extending a side edge of the cross beam wall adjacent to the plug-in space, and the elastic arm can be elastically deformed along the width direction of the insulating body.

10. The board-to-board connector according to claim 7, wherein: The upper surface of the upper end wall of the second protection frame is higher than the upper surface of the first protection frame and the side wall to form a step difference. The inner side of the upper end wall adjacent to the insertion space is formed with an arc-shaped guide surface through a drawing process.

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