Electric connector assembly
By adopting the design of a limited rib stop and a snap-on arm in the electrical connector assembly, the problem of poor contact between the plug and socket terminals in the prior art is solved, and a stable electrical connection is achieved.
Patent Information
- Application Number
- CN202420551103.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-20
- Publication Date
- 2024-12-27
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the vibrating environment of existing electrical connector components, the plug terminal and the socket terminal cannot maintain a stable electrical connection, especially when the thickness of the docking part is small, the gap between the contact arm and the plastic stop arm leads to poor contact, or the docking part When the thickness is too thick, the anti-retardation effect of the stop arm becomes worse.
The design of stopping and pressing the clamping arm is adopted. Through the coupling arm and the support arm, the retaining force of the plug terminal is enhanced, and through the coupling rib and the clamping arm, the plug terminal and the socket terminal are ensured. stable contact.
Effectively prevent the plug terminal from exiting the terminal slot, enhance the positive force of the contact arm, avoid elastic fatigue, and ensure stable electrical connections in vibrating environments.
Smart Images
Figure CN222261574U_ABST
Abstract
Description
[Technical field]
[0001] The utility model relates to an electric connector component, in particular to an electric connector component with strong anti-vibration capability. [Background technology]
[0002] An existing electrical connector assembly, a plug connector includes a plug housing and a plurality of plug terminals accommodated in a plurality of terminal grooves of the plug housing, wherein the terminal grooves are provided with a plastic stop arm that stops at a stop edge of the plug terminal to prevent the plug terminal from exiting the plug housing, and a socket connector includes a socket housing and a plurality of socket terminals fixed to the socket housing, a contact arm of the plug terminal is clamped at a mating portion of the socket terminal, and when the thickness of the mating portion is large, the plastic stop arm stops at one side of the contact arm.
[0003] Since the electrical connector assembly is used in a vibrating environment, it is necessary to maintain a stable electrical connection between the plug terminal and the socket terminal, and the plastic stop arm in the prior art can only prevent the contact arm from excessively deflecting and causing elastic fatigue. However, when the thickness of the docking portion is relatively small, there is still a gap between the contact arm and the plastic stop arm. When the contact arm is affected by vibration, it can still move and deform in the gap, resulting in poor contact with the docking portion, which is not conducive to the stable electrical connection of the electrical connector assembly. When the thickness of the docking portion is too thick, the abutment between the docking portion and the contact arm further deforms the plastic stop arm toward the side away from the stop edge, causing the plastic stop arm to have a worse anti-retreat effect on the plug terminal.
[0004] Therefore, it is necessary to design an improved electrical connector assembly to solve the above technical problems. [Contents of the utility model]
[0005] In view of the problems of the background technology, the purpose of the utility model is to provide an electrical connector assembly with a limit rib to block and press the clamping arm, thereby enhancing the holding force of the plug terminal and ensuring stable contact between the plug terminal and the socket terminal.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an electrical connector assembly, comprising a plug connector and a socket connector which are plugged in along a plug-in direction, the plug connector comprising a plug housing, the plug housing comprising a terminal slot, a clamping arm is provided in the terminal slot, a locking portion is convexly provided on one side of the clamping arm, a receiving space is provided between a side of the clamping arm away from the locking portion and an inner wall surface of the terminal slot along a first direction perpendicular to the plug-in direction, and the clamping arm can be elastically deformed along the first direction, the plug terminal is assembled in the terminal slot along the plug-in direction, an opening is provided on the outer side surface of the plug terminal corresponding to the locking portion, the locking portion blocks the edge of the opening, the plug terminal has a cylindrical main body, a contact arm and a support arm extending along the plug-in direction are provided in the main body, and the support arm along the first direction The socket connector has a socket housing and a socket terminal fixed to the socket housing, the socket housing having a plug-in cavity recessed along a plug-in direction to receive the plug housing, the socket terminal having a plug-in portion exposed in the plug-in cavity, a limiting rib extending along the plug-in direction in the plug-in cavity, the limiting rib being located on one side of the plug-in portion along the first direction; when the plug connector and the socket connector are plugged in, the plug-in portion is inserted into the main body and contacts the contact arm correspondingly, the limiting rib correspondingly enters the accommodating space and abuts the clamping arm, and the side of the clamping arm facing away from the limiting rib presses the support arm along the first direction so that the support arm presses against the contact arm in a direction close to the plug-in portion.
[0007] Furthermore, the locking portion is overlapped on the free end of the support arm, and the support arm is overlapped on the free end of the contact arm.
[0008] Furthermore, a contact portion is provided at the free end of the contact arm for contacting the plug-in portion, the support arm abuts against the contact portion, and the clamping arm overlaps with the contact portion along a first direction.
[0009] Furthermore, the main body portion includes a first wall, a second wall and a third wall arranged on opposite sides of the first wall, and a fourth wall is formed by bending from the second wall toward the third wall. The first wall, the second wall, the third wall and the fourth wall are arranged together to form a cylinder. The opening is opened from the outer side surface of the fourth wall, and a first connecting portion and a second connecting portion are bent from the third wall toward the second wall. The first connecting portion and the second connecting portion are arranged at intervals along the plug-in direction, and the contact arm and the support arm are respectively extended toward each other along the plug-in direction. The fourth wall covers one side of the first connecting portion and the second connecting portion along the first direction.
[0010] Furthermore, at least one contact bulge is protruding from the first wall along the first direction, and the contact bulge and the contact arm jointly clamp the opposite sides of the plug-in portion along the first direction. The contact bulge and the contact portion are spaced apart along the plug-in direction, and the contact bulge is aligned with the locking portion along the first direction.
[0011] Furthermore, the extension length of the plug-in portion along the plug-in direction is greater than the length of the limiting rib, so that after the plug-in portion contacts the contact arm, the limiting rib is pressed against the clamping arm.
[0012] Further, a direction perpendicular to the plugging direction and the first direction is defined as the second direction, and the width of the limiting rib along the second direction is greater than the width of the clamping arm along the second direction.
[0013] Furthermore, the clamping arm is inclined on one side away from the locking portion, and the limiting rib is provided with an inclined guide surface on one end facing the clamping arm, and the guide surface abuts against the side of the clamping arm away from the locking portion to guide the limiting rib to be smoothly inserted into the accommodating space.
[0014] Furthermore, the limiting rib includes a base connected to the inner wall surface of the socket shell, and a thickness reduction portion extends from the base along the plug-in direction. The thickness of the thickness reduction portion along the first direction is less than the thickness of the base. There is a gap between the side of the thickness reduction portion facing away from the clamping arm and the inner wall surface of the receiving space, and the side of the base facing away from the clamping arm abuts against the inner wall surface of the receiving space.
[0015] Furthermore, the socket shell has a bottom surface and a mounting portion protruding from the edge of the bottom surface on a side away from the plug-in cavity, a plurality of pin grooves are recessed from the bottom surface along the plug-in direction to accommodate a plurality of the socket terminals, a plurality of partition ribs are protruding from the bottom surface, one partition rib is correspondingly provided between each two adjacent pin grooves, and a protruding length of the partition rib along the plug-in direction is less than a protruding length of the mounting portion.
[0016] Compared with the prior art, the utility model has the following beneficial effects: the contact arm of the plug terminal partially overlaps with the support arm along the first direction, the support arm is exposed in the opening of the plug terminal, the clamping arm extends into the opening and the locking portion is protruding to block the edge of the opening, preventing the plug terminal from withdrawing from the terminal slot, and the clamping arm overlaps the support arm, so that the contact arm is supported by the support arm and the clamping arm along the first direction, thereby enhancing the positive force of the contact arm, and when the plug connector and the socket connector are plugged in, the plugging portion of the socket terminal contacts the contact arm, and the limiting ribs are correspondingly moved forward. The locking portion is locked into the locking cam, and the locking cam is engaged with the locking portion by the locking cam, so that the locking cam is locked to the locking cam.
Brief Description of the Drawings
[0017] Figure 1 It is a three-dimensional assembly diagram of the electrical connector assembly of the utility model;
[0018] Figure 2 This is a three-dimensional exploded view of the socket connector in the utility model;
[0019] Figure 3 It is a three-dimensional exploded view of the plug connector in the utility model;
[0020] Figure 4 It is a top view schematic diagram of the socket connector and the plug connector of the utility model after being plugged in;
[0021] Figure 5 for Figure 4 Schematic cross-sectional view along the AA direction;
[0022] Figure 6 for Figure 5 An enlarged schematic diagram of the dotted box C in the middle;
[0023] Figure 7 It is a cross-sectional schematic diagram of the plug connector and the socket connector of the utility model during the plugging process;
[0024] Figure 8 for Figure 4 Schematic cross-sectional view along direction BB;
[0025] Fig. 9 It is a three-dimensional diagram of the plug terminal in the utility model.
[0026] Description of the accompanying drawings for the specific implementation:
[0027] [Specific implementation method]
[0028] In order to facilitate a better understanding of the purpose, structure, characteristics and functions of the present invention, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods.
[0029] like Figures 1 to 9 As shown, the electrical connector assembly provided by the utility model comprises a plug connector 100 and a socket connector 200 which are plugged into each other. The plug connector 100 comprises a plug housing 1, the plug housing 1 is provided with a plurality of terminal grooves 11 to accommodate a plurality of plug terminals 2, a clamping arm 111 is provided in the terminal groove 11 to hold the plug terminals 2, the plurality of plug terminals 2 are respectively connected to a plurality of cables 3, the socket connector 200 is fixed to a circuit board 7, the socket connector 200 comprises a socket housing 4 and a A plurality of socket terminals 5, the socket housing 4 is provided with a plug-in cavity 41 along the plug-in direction, a plurality of limiting ribs 42 are provided in the plug-in cavity 41, a plurality of plug-in parts 51 of the plurality of socket terminals 5 are arranged in the plug-in cavity 41, a plurality of welding parts 53 are connected to the circuit board 7, when the plug connector 100 is plugged with the socket connector 200, the plug housing 1 is received in the plug-in cavity 41, the limiting ribs 42 are correspondingly abutted with the clamping arms 111, and the main body 21 of the plug terminal 2 is plugged with the plug-in part 51 to realize electrical connection. The plug-in direction is defined as the X-axis direction in the figure, i.e., the front-back direction, and the plugged ends of the plug connector 100 and the socket connector 200 are defined as their respective front ends, a direction perpendicular to the plug-in direction is defined as the first direction, the first direction is the Z-axis direction in the figure, i.e., the up-down direction, and another direction perpendicular to the plug-in direction and the first direction is defined as the second direction, the second direction is the Y-axis direction in the figure, i.e., the left-right direction.
[0030] like Figure 3 and Figure 7As shown, the plug housing 1 has a plurality of terminal slots 11 penetrating along the plugging direction, the front end of the terminal slot 11 has an insertion opening 112 and an insertion hole 113 located below the insertion opening 112 along the first direction, the insertion opening 112 is used for the insertion of the plug-in portion 51 of the socket terminal 5, and the insertion hole 113 is used for the insertion of the limiting rib 42. A clamping arm 111 extends obliquely along the plugging direction from the inner wall surface of the terminal slot 11 on one side along the first direction (i.e., the lower wall surface of the terminal slot 11 in the figure), the free end of the clamping arm 111 is arranged opposite to the insertion hole 113, when the plug terminal 2 is assembled into the terminal slot 11, the clamping arm 111 can be elastically deformed along the first direction, a locking portion 1111 is protruded upward from the clamping arm 111 along the first direction, and a receiving space S is formed between the lower side of the clamping arm 111 and the inner wall surface of one side of the terminal slot 11.
[0031] like Figure 3 and Fig. 9 As shown, the plug terminal 2 includes a cylindrical main body 21 and a clamping portion 22 extending backward from the main body 21. The main body 21 includes a first wall 211, a second wall 212 and a third wall 213 arranged on opposite sides of the first wall 211, and a fourth wall 214 is formed by bending from the second wall 212 toward the side where the third wall 213 is located. The first wall 211, the second wall 212, the third wall 213 and the fourth wall 214 are surrounded to form a cylindrical shape with a front end opening 2141. A first connecting portion 2131 is bent from the front end along the plugging direction toward the side where the second wall 212 is located, the contact arm 215 is extended backward from the first connecting portion 2131, a contact portion 2151 is protruded upward from the free end of the contact arm 215 along the first direction, a second connecting portion 2132 is bent from the rear end of the third wall 213 along the plugging direction toward the side where the second wall 212 is located, and the support arm 216 is extended forward from the second connecting portion 2132, so that the contact arm 215 and the support arm 216 extend toward each other, as shown in FIG. Figure 6 As shown, the support arm 216 overlaps below the contact portion 2151 at the free end of the contact arm 215 along the first direction. Since the deformation degree at the free end is relatively large, the support arm 216 can prevent the free end of the contact arm 215 from excessive deformation and enhance the positive force at the contact portion 2151. A plurality of contact convex bumps 2111 are protruded downward from the first wall 211 along the first direction. The plurality of contact convex bumps 2111 and the contact arm 215 clamp the opposite sides of the plug-in portion 51 together along the first direction. The plurality of contact convex bumps 2111 and the contact portion 2151 are arranged at intervals along the plug-in direction, so that the plug terminal 2 and the socket terminal 5 are in multi-point contact.
[0032] like Fig. 9 As shown, the fourth wall 214 is located at the lower side of the contact arm 215 and the support arm 216 along the first direction, and the fourth wall 214 covers one side of the first connecting portion 2131 and the second connecting portion 2132 along the first direction to play a protective role, and an opening 2141 is recessed inwardly from the outer surface of the fourth wall 214, and as shown Figure 6 The opening 2141 shown can allow the clamping arm 111 to partially extend into so that the locking portion 1111 is blocked behind the edge of the opening 2141 in the plug-in direction, thereby preventing the plug terminal 2 from withdrawing backward from the terminal slot 11, and the support arm 216 is exposed in the opening 2141, and the locking portion 1111 overlaps the free end of the support arm 216 to increase the supporting force of the support arm 216 on the contact arm 215, thereby improving the positive contact force of the contact arm 215, and the locking portion 1111 is aligned with the contact bulge 2111 along the first direction, thereby enhancing the stability of the contact bulge 2111 in contact with the plug-in portion 51.
[0033] like Figure 2 and Figure 5 As shown, a plurality of pin grooves 43 are recessed forward along the plugging direction from the bottom surface 44 of the socket housing 4, and the pin grooves 43 are connected to the plugging cavity 41 forward along the plugging direction. The socket terminal 5 includes a retaining portion 52 retained in the pin groove 43, a plugging portion 51 extends forward from the retaining portion 52, and a welding portion 53 extends backward from the retaining portion 52. The plugging portion 51 extends into the plugging cavity 41, and a plurality of partition ribs 441 are protruded backward along the plugging direction from the bottom surface 44 of the plugging housing 4. One partition rib 441 is provided between two adjacent pin grooves 43. The distance between two adjacent retaining portions 52 along the second direction is smaller than the distance between two adjacent welding portions 53. The partition rib 441 can increase the creepage distance between the two retaining portions 52 of two adjacent socket terminals 5, so as to achieve good electrical insulation between the two socket terminals 5. Two mounting portions 45 are also protruded from the edge of the bottom surface 44. The protruding length of the partition rib 441 along the plug-in direction is smaller than the protruding length of the mounting portion 45, which prevents the partition rib 441 from touching the circuit board 7 when the socket connector 200 is installed on the circuit board 7. Mounting holes 451 are provided on the two mounting portions 45. Two fixing members 6 pass through the corresponding holes of the circuit board 7 along the plug-in direction and are respectively received in the two mounting holes 451 to fix the socket connector 200 and the circuit board 7 well.
[0034] like Figure 1 and Figures 5 to 7As shown, a plurality of limiting ribs 42 extend forward from the inner wall surface of the socket housing 4 along the plugging direction, the limiting ribs 42 are located in the plugging cavity 41 and below the plugging portion 51 along the first direction, the limiting ribs 42 include a base 421 connected to the inner wall surface of the socket housing 4, a thickness reduction portion 422 extends from the base 421 along the plugging direction, the thickness of the thickness reduction portion 422 along the first direction is less than the thickness of the base 421, and an inclined guide surface 422 is provided on the end of the thickness reduction portion 422 1, the guide surface 4221 is used to abut against the side of the clamping arm 111 away from the locking portion 1111 (i.e., the lower side of the clamping arm 111) to guide the limiting rib 42 to be smoothly inserted into the receiving space S between the clamping arm 111 and the inner wall of the terminal slot 11, so that the limiting rib 42 is blocked below the clamping arm 111 along the first direction to prevent the clamping arm 111 from deforming downward, so that the locking portion 1111 can always block the edge of the opening 2141 and further prevent the plug terminal 2 from withdrawing backward. The extension length of the plug-in portion 51 along the plug-in direction is greater than the length of the limiting rib 42, such as Figure 7 During the plug-in connection process of the plug connector 100 and the socket connector 200, the plug-in portion 51 first contacts the contact arm 215, and the limiting rib 42 and the clamping arm 111 are still separated by a distance and not in contact. Therefore, when the plug-in portion 51 and the contact arm 215 just come into contact, they are only supported by the support arm 216 and the clamping arm 111, and are not affected by the force transmitted by the limiting rib 42, thereby avoiding excessive insertion force when the plug-in portion 51 and the contact arm 215 are plugged in. In addition, there is a gap between the lower side of the thickness reduction portion 422 and the inner wall surface of the accommodating space S, thereby avoiding excessive interference between the thickness reduction portion 422 and the inner wall surface of the accommodating space S, thereby reducing the insertion resistance of the limiting rib 42, and when the plug connector 100 and the socket connector 200 are further plugged in, the limiting rib 42 will come into contact with the clamping arm 111, and as Figure 5 and Figure 6 When the plug connector 100 and the socket connector 200 are plugged in, the lower side of the base 421 abuts against the inner wall surface of the receiving space S so that the limiting column 42 is supported by the plug housing 1 along the first direction, and the upper side of the thickness reduction portion 422 abuts against the clamping arm 111, so that the clamping arm 111 is further pressed against the support arm 216, and the support arm 216 presses upward against the contact arm 215, thereby enhancing the positive contact force of the contact arm 215, thereby maintaining the contact portion 2151 on the contact arm 215 in stable contact with the plug portion 51. And in Figure 7In the embodiment, the width of the limiting rib 42 along the second direction is greater than the width of the clamping arm 111 along the second direction, so that the limiting rib 42 has a larger contact surface to abut against the clamping arm 111 well.
[0035] In summary, the electrical connector of the utility model has the following beneficial effects:
[0036] 1. The contact arm 215 of the plug terminal 2 partially overlaps with the support arm 216 along the first direction, and the support arm 216 is exposed in the opening 2141 of the plug terminal 2. The clamping arm 111 extends into the opening 2141 and the locking portion 1111 is protruded to block the edge of the opening 2141, thereby preventing the plug terminal 2 from withdrawing from the terminal slot 11. The clamping arm 111 overlaps the support arm 216, so that the contact arm 215 is supported by the support arm 216 and the clamping arm 111 along the first direction, thereby enhancing the positive force of the contact arm 215. When the plug connector 100 and the socket connector 200 are plugged in, the plugging portion 51 of the socket terminal 5 contacts the contact arm 215, and the limiting rib 42 enters into the corresponding In the receiving space S between the clamping arm 111 and the inner wall surface of the terminal groove 11, the limiting rib 42 is blocked on one side of the clamping arm 111 along the first direction to prevent the locking portion 1111 from disengaging from the opening 2141, further strengthening the locking of the plug terminal 2, and the limiting rib 42 abuts against the clamping arm 111 along the first direction. After the clamping arm 111 is subjected to force, it presses the support arm 216 along the first direction, so that the support arm 216 is pressed against the contact arm 215, further enhancing the positive contact force of the contact arm 215, preventing the contact arm 215 from generating elastic fatigue, and ensuring that the contact arm 215 is in stable contact with the plug-in portion 51, which is beneficial for the plug connector 100 and the socket connector 200 to maintain a good electrical connection under a vibration environment.
[0037] 2. The locking portion 1111 is overlapped with the free end of the support arm 216, and the support arm 216 is overlapped with the free end of the contact arm 215 to limit excessive displacement at the free end of the contact arm 215 and prevent the contact arm 215 from generating elastic fatigue.
[0038] 3. The plurality of contact convex bumps 2111 and the contact portion 2151 are spaced apart along the plugging direction, so that the plug terminal 2 forms multi-point contact with the socket terminal 5, and the contact convex bumps 2111 and the locking portion 1111 are aligned along the first direction, so as to indirectly enhance the contact force between the plug terminal 2 and the socket terminal 5, which is beneficial to a good and stable electrical connection between the plug terminal 2 and the socket terminal 5.
[0039] 4. The extension length of the plug-in portion 51 along the plug-in direction is greater than the length of the limiting rib 42, so that after the plug-in portion 51 contacts the contact arm 215, the limiting rib 42 and the clamping arm 111 are pressed against each other, so as to reduce the insertion force when the plug connector 100 and the socket connector 200 are plugged in, which is convenient for quick and easy plug-in.
[0040] 5. Along the first direction, the thickness of the thickness reducing portion 422 is smaller than the thickness of the base 421, and there is a gap between the side of the thickness reducing portion 422 away from the clamping arm 111 and the inner wall surface of the accommodating space S, so that the limiting rib 42 will not interfere too much with the inner wall surface of the accommodating space S during the insertion process, thereby reducing the insertion resistance. The side of the base 421 away from the clamping arm 111 abuts against the inner wall surface of the terminal groove 11, so that the limiting rib 42 obtains the supporting force from the socket housing 4, and further transmits the supporting force to the clamping arm 111, thereby indirectly enhancing the positive force of the contact arm 215 in contact with the plug-in portion 51, and further enhancing the blocking effect of the limiting rib 42 on the clamping arm 111.
[0041] The above detailed description is only an explanation of the preferred embodiment of the utility model, and does not limit the patent scope of the utility model. Therefore, all equivalent technical changes made by using the description and illustrations of this creation are included in the patent scope of this creation.
Claims
1. An electrical connector assembly, comprising a plug connector and a socket connector plugged into each other along a plugging direction, characterized in that: The plug connector comprises a plug housing, the plug housing comprises a terminal slot, a clamping arm is arranged in the terminal slot, a locking portion is convexly arranged on one side of the clamping arm, a receiving space is provided between a side of the clamping arm away from the locking portion and an inner wall surface of the terminal slot along a first direction perpendicular to the plugging direction, and the clamping arm can be elastically deformed along the first direction, the plug terminal is assembled in the terminal slot along the plugging direction, an opening is provided on the outer side surface of the plug terminal corresponding to the locking portion, the locking portion blocks the edge of the opening, the plug terminal has a cylindrical main body, a contact arm and a support arm extending along the plugging direction are arranged in the main body, the support arm partially overlaps with the contact arm along the first direction, the support arm is exposed in the opening, the clamping arm extends into the opening and overlaps the support arm along the first direction; The socket connector comprises a socket housing and a socket terminal fixed to the socket housing, wherein the socket housing is provided with a plug-in cavity along a plug-in direction to receive the plug housing, the socket terminal has a plug-in portion exposed in the plug-in cavity, a limiting rib extending along the plug-in direction is provided in the plug-in cavity, and the limiting rib is located at one side of the plug-in portion along a first direction; When the plug connector and the socket connector are plugged in, the plug-in portion is inserted into the main body and contacts the contact arm accordingly, the limiting rib enters the accommodating space and abuts the clamping arm accordingly, and the side of the clamping arm facing away from the limiting rib presses the support arm along a first direction, so that the support arm presses against the contact arm in a direction close to the plug-in portion.
2. The electrical connector assembly according to claim 1, characterized in that: The locking portion is overlapped on the free end of the support arm, and the support arm is overlapped on the free end of the contact arm.
3. The electrical connector assembly according to claim 1, characterized in that: A contact portion is provided at the free end of the contact arm for contacting the plug-in portion, the support arm abuts against the contact portion, and the clamping arm overlaps with the contact portion along a first direction.
4. The electrical connector assembly according to claim 3, characterized in that: The main body includes a first wall, a second wall and a third wall arranged on opposite sides of the first wall, and a fourth wall is formed by bending from the second wall toward the third wall. The first wall, the second wall, the third wall and the fourth wall are arranged together to form a cylinder. The opening is opened from the outer side surface of the fourth wall, and a first connecting portion and a second connecting portion are bent from the third wall toward the second wall. The first connecting portion and the second connecting portion are arranged at intervals along the plug-in direction, and the contact arm and the support arm are respectively extended toward each other along the plug-in direction. The fourth wall covers one side of the first connecting portion and the second connecting portion along the first direction.
5. The electrical connector assembly according to claim 4, characterized in that: At least one contact bulge is protruded from the first wall along the first direction, and the contact bulge and the contact arm jointly clamp the opposite sides of the plug-in portion along the first direction. The contact bulge and the contact portion are spaced apart along the plug-in direction, and the contact bulge is aligned with the locking portion along the first direction.
6. The electrical connector assembly according to claim 1, characterized in that: The extension length of the plug-in portion along the plug-in direction is greater than the length of the limiting rib, so that after the plug-in portion contacts the contact arm, the limiting rib is pressed against the clamping arm.
7. The electrical connector assembly according to claim 1, characterized in that: A direction perpendicular to the plugging direction and the first direction is defined as the second direction, and the width of the limiting rib along the second direction is greater than the width of the clamping arm along the second direction.
8. The electrical connector assembly according to claim 1, wherein: The clamping arm is inclined at one side away from the locking portion, and the limiting rib is provided with an inclined guide surface at one end facing the clamping arm, and the guide surface abuts against the side of the clamping arm away from the locking portion to guide the limiting rib to be smoothly inserted into the accommodating space.
9. The electrical connector assembly according to claim 1, characterized in that: The limiting rib includes a base connected to the inner wall surface of the socket shell, and a thickness reduction portion extends from the base along the plug-in direction. The thickness of the thickness reduction portion along the first direction is less than the thickness of the base. There is a gap between the side of the thickness reduction portion facing away from the clamping arm and the inner wall surface of the receiving space, and the side of the base facing away from the clamping arm abuts against the inner wall surface of the receiving space.
10. The electrical connector assembly according to claim 1, wherein: The socket shell has a bottom surface and a mounting portion protruding from the edge of the bottom surface on the side away from the plug-in cavity, a plurality of pin grooves are recessed from the bottom surface along the plug-in direction to accommodate a plurality of socket terminals, a plurality of partition ribs are protruding from the bottom surface, one partition rib is correspondingly provided between each two adjacent pin grooves, and the protruding length of the partition rib along the plug-in direction is less than the protruding length of the mounting portion.