An electrical connector and electrical connector assembly

Abstract

The application discloses an electric connector and an electric connector combination, the electric connector comprising: an insulating body; a first mating surface formed on the insulating body; a locking arm integrally connected to one end of the insulating body and extending rearward in a cantilever shape; a functional part formed on the locking arm; a spacing gap formed between the locking arm and the first mating surface to enable the other end of the locking arm to swing and drive the functional part to swing; a locking part formed at the functional part of the locking arm; a slide lock member formed with a plug-in tongue part corresponding to the spacing gap, the slide lock member being capable of sliding forward or backward relative to the insulating body and having a first position state and a second position state; when the slide lock member is in the first position state, the functional part cannot move relative to the insulating body when the other end of the locking arm is pressed; when the slide lock member is in the second position state, the functional part can move relative to the insulating body when the other end of the locking arm is pressed.

Description

Technical Field

[0001] This application relates to an electrical connector and an electrical connector assembly. Background Technology

[0002] Connectors include board-to-board connectors, wire-to-board connectors, and wire-to-wire connectors. Due to their flexible connection, good transmission performance, and easy installation, connectors are widely used in industries such as industrial automation, power systems, office equipment, and automobiles. Connectors consist of a male terminal (plug connector) and a female terminal (receptacle connector) for mating connections. To ensure connection stability, robust connection structures are required on both the male and female terminals to achieve stable connection between them.

[0003] The most common connection method involves interlocking the male and female housings, and then using a CPA locking element to further secure the male and female housings in place. While this method improves the connection stability to some extent, there is still room for improvement. Summary of the Invention

[0004] The purpose of this application is to provide an electrical connector and an electrical connector assembly, wherein the electrical connector and the mating connector can be stably mated.

[0005] To achieve the above objectives, this application provides the following technical solution: An electrical connector, comprising: Insulating body; The first mating surface is defined to be formed on the insulating body; The locking arm has one end integrally connected to the insulating body near the front end along the docking direction, and the other end extends backward along the docking direction in a cantilever shape. The functional part is formed at one of the positions along the docking direction on the latch arm; The locking arm and the first mating surface are spaced apart to allow the other end of the locking arm to swing and connect with the swing of the functional part. A locking part, formed at the functional part of the locking arm, is used for interlocking after docking with the mating connector; The sliding lock has a tongue portion that is inserted forward into the gap along the mating direction. The sliding lock can slide forward or backward relative to the insulating body along the mating direction and has a first position state and a second position state. When the sliding lock is in the first position relative to the insulating body, the functional part cannot move relative to the insulating body when the other end of the locking arm is pressed. When the sliding lock is in the second position relative to the insulating body, pressing the other end of the locking arm allows the functional part to move relative to the insulating body.

[0006] Furthermore, it also includes a limiting part, which is formed on the sliding lock and located near the rear end of the sliding lock along the mating direction; When the sliding lock is in the second position relative to the insulating body, the limiting part does not contact the insulating body; When the sliding lock is in the first position relative to the insulating body, the limiting part is supported by the insulating body.

[0007] Furthermore, the limiting part is provided in two parts and is located on the left and right sides of the sliding lock respectively.

[0008] Furthermore, it also includes: two retaining wall portions, integrally protruding on the left and right sides of the first mating surface of the insulating body; At least a portion of the gap is formed between the two retaining wall portions; When the sliding lock is in the first position relative to the insulating body, the limiting part is supported on the retaining wall part.

[0009] Furthermore, the first mating surface includes a front mating surface and a rear mating surface, and along the mating direction, the front mating surface is located in front of the rear mating surface; Along the vertical direction perpendicular to the docking direction, the distance between the front mating surface and the corresponding inner wall surface of the locking arm is less than the distance between the rear mating surface and the corresponding inner wall surface of the locking arm. Along the vertical direction, the projection of the functional part falls on the front mating surface.

[0010] Furthermore, the locking arm area directly above the side of the front mating surface that is close to the rear mating surface forms the functional part.

[0011] Furthermore, the functional part is located approximately at the middle of the extension path of the latch arm along the docking direction.

[0012] Furthermore, the front mating surface and the rear mating surface form a step difference along the vertical direction, with the front mating surface being higher than the rear mating surface, so that the distance between the front mating surface and the corresponding inner wall surface of the latch arm along the vertical direction is less than the distance between the rear mating surface and the corresponding inner wall surface of the latch arm.

[0013] Furthermore, the inner wall surface of the locking arm located directly above the front mating surface is defined as the front inner wall surface, and the inner wall surface of the locking arm located directly above the rear mating surface is defined as the rear inner wall surface. The front inner wall surface and the rear inner wall surface form a step difference in the vertical direction, and the front inner wall surface is lower than the rear inner wall surface, so that the distance between the front mating surface and the corresponding inner wall surface of the locking arm in the vertical direction is smaller than the distance between the rear mating surface and the corresponding inner wall surface of the locking arm.

[0014] Furthermore, when the sliding lock is in the first position or the second position relative to the insulating body, the lower surface of the latch arm is located above the plane of the rear mating surface and does not contact the plane of the rear mating surface.

[0015] Furthermore, when the sliding lock is in the first position relative to the insulating body, the front end of the tongue is contacted and clamped between the front mating surface and the inner wall surface of the latch arm corresponding to the front mating surface in the up-down direction.

[0016] Furthermore, the portion of the tongue portion whose front end is contacted and held in the mating direction by the front end mating surface and the portion of the inner wall surface of the locking arm corresponding to the front end mating surface in the vertical direction has a thickness in the vertical direction that is greater than that of the other portions of the tongue portion.

[0017] Furthermore, the sliding lock also includes a mating plate and two side wall plates; The tongue portion is spaced apart from the mating plate at its rear end along the docking direction. The two side wall plates are respectively connected to the two sides of the mating plate of the tongue portion. The tongue portion, the mating plate, and the two side wall plates together form a mating cavity. The mating cavity is open at the front end along the docking direction. The front end of the tongue portion extends forward beyond the mating plate along the docking direction. The locking arm is inserted into the mating cavity.

[0018] Furthermore, a sliding limiting groove is formed through the side wall plate along the left and right directions perpendicular to the docking direction and the up and down direction. Limiting protrusions are formed on the left and right sides of the locking arm. The limiting protrusions are correspondingly matched and limited within the sliding limiting groove. The sliding lock member slides relative to the insulating body within the extension path of the sliding limiting groove along the docking direction.

[0019] To achieve the above objectives, this application also provides the following technical solutions: An electrical connector assembly includes an electrical connector as described in any of the above claims, and further includes a mating connector. The mating connector has a mating locking portion formed on the inner side of its mating space. The electrical connector is inserted into the mating space along the mating direction. The locking portion locks into the mating locking portion to disengage the electrical connector from the mating connector in the opposite direction to the mating direction.

[0020] Compared with the prior art, the beneficial effect of this application is that the electrical connector and the mating connector can be mated stably. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the electrical connector assembly of this application, specifically showing a three-dimensional schematic diagram after the electrical connector and the mating connector are mated.

[0022] Figure 2 This is a three-dimensional schematic diagram of the electrical connector assembly of this application, specifically showing a three-dimensional schematic diagram of the electrical connector and the mating connector before they are mated.

[0023] Figure 3 This is a partial exploded perspective view of the electrical connector assembly of this application, specifically showing the electrical connector and the mating connector in the state before mating, and the perspective view of the sliding lock component separated from the insulating body.

[0024] Figure 4 This is a partial exploded perspective view of the electrical connector of this application, specifically showing a perspective view of the sliding lock component when it is separated from the insulating body.

[0025] Figure 5 yes Figure 4 A three-dimensional diagram viewed from another angle.

[0026] Figure 6 yes Figure 1 Top view of the CEC connector assembly.

[0027] Figure 7 This is a top view of the electrical connector of this application, specifically showing a schematic diagram of the sliding lock in the second position.

[0028] Figure 8 This is a top view of the electrical connector of this application, specifically showing a schematic diagram of the sliding locking element separating from the insulating body.

[0029] Figure 9 It is self Figure 6 A cross-sectional view along line AA in the middle.

[0030] Figure 10 It is self Figure 6 The cross-sectional view of line AA in the middle shows a schematic diagram of the sliding lock separating from the insulating body.

[0031] Figure 11 It is self Figure 6 A cross-sectional view along the BB line.

[0032] Figure 12 This is the second embodiment of the electrical connector of this application, specifically shown from the following angle. Figure 9 angle.

[0033] Figure 13 This is the third embodiment of the electrical connector of this application, specifically shown from the following angle. Figure 9 angle.

[0034] Figure 14 This is the fourth embodiment of the electrical connector of this application, specifically shown from the following angle. Figure 9 angle.

[0035] Figure 15 This is the fifth embodiment of the electrical connector of this application, specifically shown from the following angle. Figure 9 angle. Detailed Implementation

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

[0037] In this application description, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] In the description of this application, it should be understood that the terms “comprising” and “having” as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may include other steps or units that are not expressly listed or that are inherent to such process, method, product, or apparatus.

[0039] To ensure accuracy in this application, all directions should be referred to as... Figure 1 For reference, the X-axis direction is defined as the mating direction, where the positive X-axis direction is the pull-out direction of the electrical connector 100; the Y-axis direction is defined as the up-down direction, where the positive Y-axis direction is up; and the Z-axis direction is defined as the left-right direction.

[0040] Please refer to the reference. Figures 1 to 11 The diagram illustrates an electrical connector and connector assembly disclosed in this application, comprising an electrical connector 100 and a mating connector 400 that mates with the electrical connector 100. The electrical connector 100 includes an insulating body 1, a plurality of terminal pieces (not labeled) fixed within the insulating body 1, and a sliding locking member 3 for use. The mating connector 400 defines a mating space 40 opening to one end, and a mating locking portion 41 is formed on one of the inner surfaces of the mating space 40. The electrical connector 100 is inserted into the mating space 40 along the mating direction and locks with the mating locking portion 41, thereby disengaging the electrical connector 100 from the mating connector 400 in the opposite direction to the mating direction.

[0041] In this embodiment, a locking arm 2 is integrally connected to the insulating body 1 near its front end along the mating direction. The other end of the locking arm 2 extends rearward in a cantilever shape along the mating direction. A functional part 21 is defined on the locking arm 2. The functional part 21 is formed at one position on the locking arm 2 along the mating direction. In a preferred embodiment, the functional part 21 is located approximately in the middle of the extension path of the locking arm 2 along the mating direction. In this embodiment, the insulating body 1 has a first mating surface 11, and one end of the locking arm 2 is integrally connected to the insulating body 1 at the front edge of the first mating surface 11 along the mating direction. A gap 10 is formed between the locking arm 2 and the first mating surface 11 to allow the other end of the locking arm 2 to swing and cause the functional part 21 to swing. Furthermore, a locking part 211 is also formed at the functional part 21 of the locking arm 2. After the electrical connector 100 mates with the mating connector 400, the locking part 211 engages with the mating locking part 41 on the mating connector 400, causing the electrical connector 100 to disengage from the mating connector 400 in the opposite direction (positive X-axis direction). In this embodiment, the locking part 211 is a protrusion formed by the upward protrusion of the upper surface of the functional part 21 of the locking arm 2, and the mating locking part 41 is a groove structure formed by the inward indentation of one of the inner surfaces of the mating space 40 (or it can be a through-hole structure as shown in the accompanying drawings). In other embodiments, the structures of the mating locking part 41 and the locking part 211 can be interchanged.

[0042] Please refer to the reference. Figures 1 to 11As shown in this embodiment, the sliding lock 3 has a tongue portion 31. The tongue portion 31 is inserted forward into the gap 10 along the mating direction. The sliding lock 3 can slide forward or backward relative to the insulating body 1 along the mating direction and has a first position state and a second position state. When the sliding lock 3 is in the first position state relative to the insulating body 1, that is, after the electrical connector 100 and the mating connector 400 are mated and the sliding lock 3 is inserted into the locked state along the mating direction, pressing the other end (X-axis positive end) of the locking arm 2 prevents the functional part 21 from moving relative to the insulating body 1, so that the locking part 211 and the mating locking part 41 remain in the locked state. When the sliding lock 3 is in the second position relative to the insulating body 1 (that is, when the sliding lock 3 is pushed to the unlocked state in the opposite direction of the docking direction), pressing the other end of the locking arm 2 will allow the functional part 21 to move relative to the insulating body 1. Specifically, the functional part 21 moves downward, causing the locking part 211 to disengage from the locking part 41. At this time, the electrical connector 100 can be pulled out.

[0043] In a preferred embodiment, the sliding lock 3 also has a limiting portion 34 near its rear end along the mating direction. When the sliding lock 3 is in the second position relative to the insulating body 1, the limiting portion 34 does not contact the insulating body 1. When the sliding lock 3 is in the first position relative to the insulating body 1, the limiting portion 34 is supported by the insulating body 1. At this time, when the other end of the locking arm 2 is pressed, the functional part 21 cannot move relative to the insulating body 1.

[0044] In one embodiment, the limiting part 34 protrudes downward from the lower surface of the rear end position of the tongue part 31 in the mating direction. When the sliding lock 3 is in a first position relative to the insulating body 1, the limiting part 34 is directly supported on the first mating surface 11 (specifically at the rear end position in the mating direction). Alternatively, as shown in the attached drawings, two limiting parts 34 are provided, located on the left and right sides of the sliding lock 3. The insulating body 1 also has two protruding retaining wall parts 13 on the left and right sides of the first mating surface 11. The two retaining wall parts 13 are located at the rear end position of the insulating body 1 along the mating direction. At least a portion of the gap 10 is formed between the two retaining wall parts 13. When the sliding lock 3 is in the first position relative to the insulating body 1, the limiting part 34 is supported on the retaining wall parts 13.

[0045] Please refer to the reference. Figures 1 to 11As shown in this embodiment, when the sliding lock 3 is in a first position or a second position relative to the insulating body 1, there is always a gap between the lower surface of the tongue portion 31 and the first mating surface 11. In a preferred embodiment, the first mating surface 11 is defined as including a front mating surface 111 and a rear mating surface 112. Along the mating direction, the front mating surface 111 is located in front of the rear mating surface 112. Along the vertical direction perpendicular to the mating direction, the distance between the front mating surface 111 and the inner wall surface of the corresponding latch arm 2 is smaller than the distance between the rear mating surface 112 and the inner wall surface of the corresponding latch arm 2. Along the vertical direction, the projection of the functional part 21 falls on the front mating surface 111. The latch arm 2 region directly above the side of the front mating surface 111 adjacent to the rear mating surface 112 forms the functional part 21. This design ensures that when the sliding lock 3 is in the first position relative to the insulating body 1, the locking part 211 and the cooperating locking part 41 are stably locked; on the other hand, it ensures that when the sliding lock 3 is in the second position relative to the insulating body 1, pressing the locking arm 2 can effectively disengage the locking part 211 and the cooperating locking part 41.

[0046] Please refer to this application. Figures 1 to 11 In the first embodiment shown, the front mating surface 111 and the rear mating surface 112 form a step difference along the vertical direction. The front mating surface 111 is higher than the rear mating surface 112, so that the distance between the front mating surface 111 and the inner wall surface of the corresponding locking arm 2 along the vertical direction is smaller than the distance between the rear mating surface 112 and the inner wall surface of the corresponding locking arm 2.

[0047] Based on the first embodiment, it can also be designed as follows: Figure 12 In the modified embodiment shown (second embodiment), when the sliding lock 3 is in the first position relative to the insulating body 1, the front end of the tongue portion 31 along the mating direction is contacted and clamped between the front mating surface 111 and the inner wall surface of the locking arm 2 corresponding to the front mating surface 111 in the vertical direction. A gap always exists between the rear mating surface 112 and the lower surface of the tongue portion 31 corresponding to it in the vertical direction. This further ensures the locking stability of the locking part 211 and the mating locking part 41. In the first and second embodiments, the tongue portion 31 is a flat plate with the same thickness at all positions.

[0048] Based on the second embodiment, it can also be designed as follows: Figure 13In the modified embodiment shown (third embodiment), the front end of the tongue portion 31 along the mating direction is contacted and clamped by the front mating surface 111 and the middle part of the inner wall surface of the locking arm 2 corresponding to the front mating surface 111 along the vertical direction. The thickness of this part along the vertical direction is greater than that of other parts of the tongue portion 31. There is always a gap between the rear mating surface 112 and the lower surface of the tongue portion 31 corresponding to it along the vertical direction. This is also to better achieve the following technical effects: on the one hand, it can ensure that when the sliding lock 3 is in the first position relative to the insulating body 1, the locking part 211 and the mating locking part 41 are stably locked; on the other hand, it can ensure that when the sliding lock 3 is in the second position relative to the insulating body 1, pressing the locking arm 2 can effectively disengage the locking part 211 and the mating locking part 41.

[0049] Based on the third embodiment, it can also be designed as follows: Figure 14 In the modified embodiment shown (fourth embodiment), the inner wall surface of the locking arm 2 located directly above the front mating surface 111 is defined as the front inner wall surface, and the inner wall surface of the locking arm 2 located directly above the rear mating surface 112 is defined as the rear inner wall surface. The front inner wall surface and the rear inner wall surface form a step difference in the vertical direction, and the front inner wall surface is lower than the rear inner wall surface, so that the distance between the front mating surface 111 and the corresponding inner wall surface of the locking arm 2 in the vertical direction is smaller than the distance between the rear mating surface 112 and the corresponding inner wall surface of the locking arm 2. Of course, in this embodiment, there is always a gap between the rear mating surface 112 and the lower surface of the corresponding tongue 31 in the vertical direction.

[0050] Based on the fourth embodiment, it can also be designed as follows: Figure 15 The modified embodiment shown (fifth embodiment) has the front mating surface 111 and the rear mating surface 112 on the same horizontal plane. The lower surface of the tongue 31 is directly supported on the rear mating surface 112, and the function is achieved solely by the step structure of the inner wall surface (lower surface) of the locking arm 2.

[0051] To further explain, in Embodiments 1 to 3 of this application ( Figures 1 to 13 The upper surface of the tongue portion 31 is in direct contact with the inner wall surface of the locking arm 2. Figure 14 In the fourth embodiment, the upper surface of the tongue portion 31 (except for the portion at the front end of the tongue portion 31) is spaced apart from the inner wall surface of the locking arm 2, and the lower surface of the tongue portion 31 is spaced apart from the rear mating surface 112. Figure 15In the fifth embodiment, the upper surface of the tongue portion 31 (except for the portion at the front end of the tongue portion 31) is spaced apart from the inner wall surface of the locking arm 2, while the lower surface of the tongue portion 31 is in direct contact with the rear mating surface 112. Of course, in the implementation of the design and production, adjustments and combinations can be made according to the actual functions.

[0052] Please refer to the reference. Figures 1 to 11 As shown in this embodiment, the sliding lock 3 further includes a mating plate 32 and two side wall plates 33. The rear end of the tongue portion 31 along the mating direction is spaced apart from the mating plate 32 in the vertical direction. The two side wall plates 33 are respectively connected to the two sides of the mating plate 32 of the tongue portion 31. The tongue portion 31, the mating plate 32, and the two side wall plates 33 together form a mating cavity 30. The mating cavity 30 is open at the front end along the mating direction. The front end of the tongue portion 31 extends forward beyond the mating plate 32 along the mating direction. The locking arm 2 is inserted into the mating cavity 30. This provides a sliding guide and facilitates the installation of the sliding lock 3. Furthermore, a sliding limiting groove 330 is formed on the side wall plate 33 along the left and right directions perpendicular to the docking direction and the up and down direction. Limiting protrusions 220 are formed on the left and right sides of the locking arm 2. The limiting protrusions 220 are correspondingly matched and limited within the sliding limiting groove 330. The sliding lock 3 slides relative to the insulating body 1 within the extension path of the sliding limiting groove 330 along the docking direction.

[0053] Further, please refer to Figure 11 As shown, in order to ensure that the sliding lock 3 is stably maintained in the first position relative to the insulating body 1, the inner surface of the mating plate 32 is also provided with a first limiting protrusion 321, and the upper surface of the corresponding position of the latch arm 2 is provided with a second limiting protrusion 221. When the sliding lock 3 is in the first position relative to the insulating body 1, in the docking direction, the first limiting protrusion 321 is in front and the second limiting protrusion 221 is behind, and the two form a mating limit to prevent the sliding lock 3 from slipping backward in the docking direction.

[0054] Through the above embodiments, this application can ensure stable docking between the electrical connector 100 and the mating connector 400. More specifically, on the one hand, it can ensure that when the sliding lock 3 is in the first position relative to the insulating body 1, the locking part 211 and the mating locking part 41 are stably locked; on the other hand, it can ensure that when the sliding lock 3 is in the second position relative to the insulating body 1, pressing the locking arm 2 can effectively disengage the locking part 211 and the mating locking part 41.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0056] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electrical connector, characterized in that, include: Insulating body (1); The first mating surface (11) is defined to be formed on the insulating body (1). The locking arm (2) is integrally connected to the insulating body (1) at one end and extends backward in a cantilever shape along the docking direction at the other end; The functional part (21) is formed at one of the positions along the mating direction on the latch arm (2); The locking arm (2) and the first mating surface (11) are spaced apart by a gap (10) so that the other end of the locking arm (2) can swing and cause the functional part (21) to swing. A locking part (211) is formed at the functional part (21) of the latch arm (2) for interlocking with the docking connector after docking; The sliding lock (3) has a tongue (31) that is inserted into the gap (10). The sliding lock (3) can slide forward or backward relative to the insulating body (1) in the docking direction and has a first position state and a second position state. When the sliding lock (3) is in the first position relative to the insulating body (1), the functional part (21) cannot move relative to the insulating body (1) when the other end of the locking arm (2) is pressed. When the sliding lock (3) is in the second position relative to the insulating body (1), the functional part (21) can move relative to the insulating body (1) when the other end of the locking arm (2) is pressed.

2. The electrical connector according to claim 1, characterized in that, Also includes: The limiting part (34) is formed on the sliding lock (3) and is located near the rear end of the sliding lock (3) along the docking direction; When the sliding lock (3) is in the second position relative to the insulating body (1), the limiting part (34) does not contact the insulating body (1); When the sliding lock (3) is in the first position relative to the insulating body (1), the limiting part (34) is correspondingly supported on the insulating body (1).

3. The electrical connector according to claim 2, characterized in that: The limiting part (34) is provided in two parts and is located on the left and right sides of the sliding lock (3).

4. The electrical connector according to claim 3, characterized in that, Also includes: Two retaining wall portions (13) are integrally protruding on the left and right sides of the first mating surface (11) of the insulating body (1); At least a portion of the gap (10) is formed between the two retaining wall portions (13); When the sliding lock (3) is in the first position relative to the insulating body (1), the limiting part (34) is correspondingly supported on the retaining wall part (13).

5. The electrical connector according to claim 1, characterized in that: The first mating surface (11) includes a front mating surface (111) and a rear mating surface (112). Along the mating direction, the front mating surface (111) is located in front of the rear mating surface (112). Along the vertical direction perpendicular to the docking direction, the distance between the front mating surface (111) and the inner wall of the corresponding locking arm (2) is smaller than the distance between the rear mating surface (112) and the inner wall of the corresponding locking arm (2). Along the vertical direction, the projection of the functional part (21) falls on the front mating surface (111).

6. The electrical connector according to claim 5, characterized in that: The functional part (21) is formed in the area of ​​the latch arm (2) directly above the side of the front mating surface (111) adjacent to the rear mating surface (112).

7. The electrical connector according to claim 6, characterized in that: The functional part (21) is located approximately in the middle of the extension path of the latch arm (2) along the docking direction.

8. The electrical connector according to claim 5, characterized in that: The front mating surface (111) and the rear mating surface (112) form a step difference in the vertical direction. The front mating surface (111) is higher than the rear mating surface (112) so that the distance between the front mating surface (111) and the inner wall of the corresponding locking arm (2) in the vertical direction is smaller than the distance between the rear mating surface (112) and the inner wall of the corresponding locking arm (2).

9. The electrical connector according to claim 5, 6, 7, or 8, characterized in that: The inner wall surface of the locking arm (2) located directly above the front mating surface (111) is defined as the front inner wall surface, and the inner wall surface of the locking arm (2) located directly above the rear mating surface (112) is defined as the rear inner wall surface. The front inner wall surface and the rear inner wall surface form a step difference in the vertical direction. The front inner wall surface is lower than the rear inner wall surface, so that the distance between the front mating surface (111) and the corresponding inner wall surface of the locking arm (2) in the vertical direction is smaller than the distance between the rear mating surface (112) and the corresponding inner wall surface of the locking arm (2).

10. The electrical connector according to claim 8, characterized in that: When the sliding lock (3) is in the first position or the second position relative to the insulating body (1), the lower surface of the locking arm (2) is above the plane of the rear mating surface (112) and does not contact the plane of the rear mating surface (112).

11. The electrical connector according to claim 5, characterized in that: When the sliding lock (3) is in the first position relative to the insulating body (1), the front end of the tongue (31) along the mating direction is contacted and clamped between the front mating surface (111) and the inner wall of the latch arm (2) corresponding to the front mating surface (111) along the up and down direction.

12. The electrical connector according to claim 11, characterized in that: The front end of the tongue (31) along the mating direction is contacted and clamped to the front mating surface (111) and the middle part of the inner wall surface of the locking arm (2) corresponding to the front mating surface (111) along the vertical direction. The thickness of the middle part along the vertical direction is greater than that of the other parts of the tongue (31).

13. The electrical connector according to any one of claims 1 to 8, characterized in that: The sliding lock (3) also includes a mating plate (32) and two side wall plates (33); The tongue (31) is positioned at its rear end along the docking direction and spaced apart from the mating plate (32) along the vertical direction. The two side wall plates (33) are respectively connected to the two sides of the mating plate (32) of the tongue (31). The tongue (31), the mating plate (32), and the two side wall plates (33) together form a mating cavity (30). The mating cavity (30) is open at the front end along the docking direction, and the front end of the tongue (31) extends forward beyond the mating plate (32) along the docking direction. The locking arm (2) is inserted into the mating cavity (30).

14. The electrical connector according to claim 13, characterized in that: The side wall panel (33) has a sliding limiting groove (330) extending through the left and right directions along the vertical and docking directions and the up and down directions. The left and right sides of the latch arm (2) have protrusions forming limiting protrusions (220). The limiting protrusions (220) are correspondingly matched and limited within the sliding limiting groove (330). The sliding lock (3) slides relative to the insulating body (1) within the extension path of the sliding limiting groove (330) along the docking direction.

15. An electrical connector assembly, comprising the electrical connector as claimed in any one of claims 1 to 14, characterized in that: It also includes a mating connector (400), on the inner side of the mating space (40) of the mating connector (400) a mating locking part (41) is formed. The electrical connector is inserted into the mating space (40) along the mating direction. The locking part (211) locks with the mating locking part (41) to realize that the electrical connector is disengaged from the mating connector (400) in the opposite direction of the mating direction.

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