Electric connector and first connector thereof

Abstract

The utility model discloses an electric connector and a first connector thereof, comprising a first plug-in body, a first electrical terminal assembled on the first plug-in body, and a connecting terminal separated from the first electrical terminal. The connecting terminal is provided with a buckling structure which is used for being buckled with a second connector of the electric connector so as to prevent the second connector from being separated from the first connector. The first connector provided by the utility model can improve the connection stability and reliability after the first connector is plugged with the second connector, thereby improving the stability of current and / or electric signal transmission.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical connection, in particular to an electrical connector and a first connector sub thereof. Background Art

[0002] As is well known, electronic connectors are widely used in electronic products to achieve electrical connection between electronic components through the electrical connectors, meeting the requirements of charging / discharging or data transmission.

[0003] Among them, in the existing electronic connectors, it includes a male connector and a female connector that are inserted and mated with each other. Through the insertion of the female connector and the male connector, the electrical terminals between the female connector and the male connector are electrically connected.

[0004] However, in the existing electronic connectors, after the male connector or the female connector is inserted, it is easy to loosen, which may lead to unstable transmission of current and / or electrical signals.

[0005] Therefore, there is an urgent need for an electrical connector and a first connector thereof to overcome one or more of the above defects. Summary of the Utility Model

[0006] An object of the utility model is to provide a first connector of an electrical connector, which can improve the connection stability and reliability after being inserted and mated with a second connector of the electrical connector, thereby improving the stability of current and / or electrical signal transmission.

[0007] Another object of the utility model is to provide an electrical connector, which can improve the connection stability and reliability after the first connector is inserted and mated with the second connector, thereby improving the stability of current and / or electrical signal transmission.

[0008] To achieve the above object, the utility model provides a first connector of an electrical connector, which is inserted and mated with a second connector of the electrical connector. Among them, the first connector includes a first insertion body, a first electrical terminal assembled on the first insertion body, and a connection terminal arranged separately from the first electrical terminal. The connection terminal is provided with a fastening structure for fastening the second connector of the electrical connector.

[0009] Compared with the prior art, since the first connector of the utility model further includes a connection terminal arranged separately from the first electrical terminal, and the connection terminal is provided with a fastening structure for fastening the second connector of the electrical connector, by means of the fastening structure, the connection stability and reliability of the first connector of the utility model after being inserted and mated with the second connector of the electrical connector can be improved, thereby improving the stability of current and / or electrical signal transmission.

[0010] Preferably, the connection terminal is an elastic conductive terminal, which includes a mounting section mounted on the first mating body and a deformable section with the fastening structure that can be elastically deformed. The deformable section is connected to the mounting section; alternatively, the connection terminal is movably assembled on the first mating body, and the moving direction of the connection terminal intersects with the docking direction of the first mating body.

[0011] Preferably, the first mating body includes a first insulator, a first housing sleeved on the first insulator, and a mating cavity formed between the first insulator and the first housing. The deformable section is located in the mating cavity and arranged side by side with the side wall of the first housing. The fastening structure faces or backs the side wall of the first housing, and the first electrical terminal is located on the first insulator.

[0012] Preferably, there are multiple connection terminals which are arranged separately around the first electrical terminal. The deformable section has a bending part near its end, and the bending part forms the fastening structure.

[0013] To achieve the above object, the electrical connector of the present invention includes a first connector and a second connector which are in mating connection. The first connector includes a first mating body, a first electrical terminal assembled on the first mating body, and a connection terminal arranged separately from the first electrical terminal. The connection terminal has a fastening structure. The second connector includes a second mating body for mating with the first mating body and a second electrical terminal assembled on the second mating body for mating with the first electrical terminal. The second mating body has a second housing arranged separately from the second electrical terminal. The second housing has a mating fastening structure for mating with the fastening structure. When the fastening structure is fastened to the mating fastening structure, it blocks the separation of the first mating body and the second mating body.

[0014] Compared with the prior art, by means of "the connection terminal arranged separately from the first electrical terminal and having a fastening structure, and the second housing arranged separately from the second electrical terminal and having a mating fastening structure", such a design can improve the connection stability and reliability after the first connector and the second connector are mated, thereby improving the stability of current and / or electrical signal transmission.

[0015] Preferably, the connection terminal is an elastic conductive terminal, which includes a mounting section mounted on the first mating body and a deformable section with the fastening structure that can be elastically deformed. The deformable section is connected to the mounting section; one of the first mating body and the second mating body is provided with an anti-fooling boss, and the other of the first mating body and the second mating body is provided with an anti-fooling groove.

[0016] Preferably, the first pair of plugging bodies includes a first insulator, a first outer shell sleeved on the first insulator, and a plugging cavity formed between the first insulator and the first outer shell. The deformation section is located in the plugging cavity and arranged side by side with the side wall of the first outer shell. The fastening structure faces or backs the side wall of the first outer shell, and the first electrical terminal is located on the first insulator. The second pair of plugging bodies further has a second insulator, and a second outer shell is sleeved on the second insulator. The second outer shell is a conductive outer shell, and the second electrical terminal is located on the second insulator.

[0017] Preferably, a positioning boss protruding laterally into the second outer shell is provided on the second outer shell, and a positioning groove cooperating with the positioning boss and exposed to the outside from the plugging cavity is formed on the first insulator. Alternatively, a positioning boss protruding laterally into the plugging cavity is provided on the first outer shell, and a positioning groove cooperating with the positioning boss and located inside the second outer shell is formed on the second insulator.

[0018] Preferably, a bending portion is provided at a position near the end of the deformation section, and the bending portion forms the fastening structure. The mating fastening structure is a convex ring protruding laterally from the second outer shell. A chamfer structure is provided at the end of the convex ring spaced apart in the plugging direction of the second pair of plugging bodies. The first electrical terminal and the second electrical terminal are both arranged to extend in the plugging direction, and there are multiple connecting terminals which are arranged separately around the first electrical terminal.

[0019] Preferably, at least one of the first electrical terminal and the second electrical terminal is a telescopic probe. When the first pair of plugging bodies and the second pair of plugging bodies are plugged to a position where the fastening structure and the mating fastening structure are in contact, the first electrical terminal is spaced apart from the second electrical terminal by a preset distance. When the first pair of plugging bodies and the second pair of plugging bodies are plugged to a position where the fastening structure and the mating fastening structure are fastened, the first electrical terminal abuts against the second electrical terminal. Description of the Drawings

[0020] Figure 1 is a perspective view of the electrical connector of the present invention when the first connector and the second connector are plugged in place and the fastening structure and the mating fastening structure are in a fastened state.

[0021] Figure 2 is Figure 1 a perspective exploded view of the electrical connector shown when the first connector and the second connector are separated.

[0022] Figure 3 is a perspective view of the first connector in the electrical connector of the present invention.

[0023] Figure 4 is Figure 3Internal view cut by a plane passing through the centerlines of the first electrical terminals indicated by the reference numerals on the left and right sides and viewed from the rear.

[0024] Figure 5 is Figure 3 Stereoscopic view from another angle.

[0025] Figure 6 is the stereoscopic view of the second connector in the electrical connector of the present utility model.

[0026] Figure 7 is Figure 6 Internal view cut by a plane passing through the centerlines of the second electrical terminals indicated by the reference numerals on the left and right sides and viewed from the front.

[0027] Figure 8 is the state diagram showing that the second connector in the electrical connector of the present utility model is correctly aligned with the first connector in the direction indicated by arrow A and not inserted into the first connector.

[0028] Figure 9 is the state diagram showing that the second connector in the electrical connector of the present utility model is inserted to the position where the mating buckle structure contacts the buckling structure in the direction indicated by arrow A.

[0029] Figure 10 is Figure 9 Internal view cut by a plane passing through the centerlines of the second electrical terminals indicated by the reference numerals on the left and right sides and viewed from below.

[0030] Figure 11 is the state diagram showing that the second connector in the electrical connector of the present utility model is inserted to the position where the mating buckle structure is buckled with the buckling structure in the direction indicated by arrow A.

[0031] Figure 12 is Figure 11 Internal view cut by a plane passing through the centerlines of the second electrical terminals indicated by the reference numerals on the left and right sides and viewed from below. Detailed implementation manners

[0032] In order to describe in detail the technical content and structural features of the present utility model, the following further description is given in conjunction with the implementation manners and with reference to the drawings.

[0033] Please refer to Figure 1 , Figure 2 and Figure 12, the electrical connector 100 of the present utility model includes a first connector 10 and a second connector 20 that are inserted and mated with each other. The first connector 10 includes a first insertion body 11, a first electrical terminal 12 assembled on the first insertion body 11, and a connection terminal 13 arranged separately from the first electrical terminal 12. A fastening structure 131 is provided on the connection terminal 13. The second connector 20 includes a second insertion body 21 for inserting with the first insertion body 11 and a second electrical terminal 22 assembled on the second insertion body 21 for mating with the first electrical terminal 12. The second insertion body 21 has a second outer shell 21a arranged separately from the second electrical terminal 22. The second outer shell 21a has a mating fastening structure 211 for mating with the fastening structure 131 to prevent the first insertion body 11 and the second insertion body 21 from separating by the fastening of the fastening structure 131 and the mating fastening structure 211. At this time, the first electrical terminal 12 and the second electrical terminal 22 are in a contacting position, and the state is shown in Figure 12 as shown. Specifically, in combination with Figure 10 and Figure 12 , as an example, the second electrical terminal 22 is a telescopic probe. Therefore, when the first insertion body 11 and the second insertion body 21 are inserted to the position where the fastening structure 131 and the mating fastening structure 211 are in contact, the first electrical terminal 12 and the second electrical terminal 22 are separated by a preset distance, and the state is shown in Figure 10 as shown; when the first insertion body 11 and the second insertion body 21 are inserted to the position where the fastening structure 131 and the mating fastening structure 211 are fastened, the first electrical terminal 12 and the second electrical terminal 22 are in contact, and the state is shown in Figure 12 as shown; the purpose of such a design is that during the insertion process of the first insertion body 11 and the second insertion body 21, the connection terminal 13 contacts the second outer shell 21a first, and then the first electrical terminal 12 contacts the second electrical terminal 22. Therefore, when the connection terminal 13 is the elastic conductive terminal described below and the second outer shell 21a is a conductive outer shell, the stability and safety of the entire connection circuit can be further improved; of course, when both the connection terminal 13 and the second outer shell 21a are insulators, the connection stability and reliability after the insertion of the first connector 10 and the second connector 20 can also be further improved by using the second electrical terminal 22 as a telescopic probe. More specifically, as follows:

[0034] As Figure 4 , Figure 10 and Figure 12As shown, as an example, the connection terminal 13 is an elastic conductive terminal, that is, the label 13 also refers to the elastic conductive terminal; the elastic conductive terminal 13 includes a mounting section 13a mounted on the first mating body 11 and a deformable section 13b with a fastening structure 131 that can be elastically deformed, and the deformable section 13b is connected to the mounting section 13a; therefore, during the mating process of the first mating body 11 and the second mating body 21, by pushing the deformable section 13b, the mating fastening structure 211 comes to a position corresponding to the fastening structure 131, and then under the action of the restoring elastic force of the deformable section 13b, the mating fastening structure 211 and the fastening structure 131 are fastened together, so as to better meet the plugging and unplugging performance of the product; obviously, according to actual needs, the connection terminal 13 can also be movably assembled on the first mating body 11, and the moving direction of the connection terminal 13 intersects with the docking direction of the first mating body 11 (see the direction indicated by arrow A), and it can also meet the plugging and unplugging requirements between the first mating body 11 and the second mating body 21. Specifically, in Figure 4 As an example, at a position near the end of the deformable section 13b, there is a bending part, and the bending part forms the fastening structure 131, which enables the fastening structure 131 to be manufactured by bending the deformable section 13b, thus simplifying the manufacturing process; in addition, since the connection terminal 13 is a sheet structure, the connection terminal 13 can be obtained by punching and bending a sheet, which also simplifies the manufacturing process of the connection terminal 13. It should be noted that when the connection terminal 13 is made to be movably assembled on the first mating body 11, the connection terminal 13 at this time can be an elastic conductive terminal or a non-elastic conductive terminal. In addition, by virtue of the connection terminal 13 being an elastic conductive terminal, the connection terminal 13 can not only provide a fastening connection function, but also be used as a grounding terminal or a signal terminal, so it can realize the energization signal and also play a role in protecting the circuit terminal, thereby improving the safety and stability of product use.

[0035] As Figures 2 to 5 shown, as an example, the first mating body 11 includes a first insulator 11a, a first outer shell 11b sleeved on the first insulator 11a, and a mating cavity 11c formed between the first insulator 11a and the first outer shell 11b. The deformable section 13b is located in the mating cavity 10c and is arranged side by side with the side wall 112 of the first outer shell 11b, and the range of the deformable section 13b being pushed and swung can be restricted by the side wall 112 of the first outer shell 11b. The fastening structure 131 faces away from the side wall 112 of the first outer shell 11b, and the first electrical terminal 12 is located on the first insulator 11a. Optionally, in Figure 4 As an example, the first electrical terminal 12 extends along the mating direction of the first mating body 11, so that the first electrical terminal 12 is made into a linear terminal; obviously, according to actual needs, the shape of the first electrical terminal 12 can also be other shapes, so it is not limited thereto. Specifically, in Figure 4Among them, as an example, the installation section 13a is installed on the first insulator 11a. Obviously, according to actual needs, the installation section 13a can also be installed on the first housing 11b, or sandwiched between the first housing 11b and the first insulator 11a. Therefore, it is not limited by Figure 4 as shown. It should be noted that Figure 2 , Figure 3 and Figure 5 show that the number of the first electrical terminals 12 is six. Obviously, according to actual needs, the number of the first electrical terminals 12 can also be two, three or four, etc. This is well known in the art. Therefore, it is not limited by Figure 2 , Figure 3 and Figure 5 as shown. In addition, since the second electrical terminal 22 cooperates with the first electrical terminal 12, correspondingly, the number of the second electrical terminals 22 is the same as that of the first electrical terminals 12.

[0036] Combined with Figure 4 and Figure 5 , as an example, the connection terminals 13 are six and are arranged separately around the first electrical terminal 12, further improving the connection stability and reliability after the first connector 10 and the second connector 20 are inserted into each other. In addition, when the connection terminals 13 are elastic conductive terminals, the stability and safety of the entire connection circuit can be further improved. Obviously, according to actual needs, the number of the connection terminals 13 can also be two, three, four or five, etc. Therefore, it is not limited by Figure 5 as shown.

[0037] As Figures 2 to 4 shown, as an example, the first insertion body 11 is provided with an anti-fooling boss 111 and a positioning groove 113 (see Figure 3 ). Optionally, both the anti-fooling boss 111 and the positioning groove 113 are located on the first insulator 11a. The anti-fooling boss 111 on the first insulator 11a also protrudes into the insertion cavity 11c. The positioning groove 113 is opened on the first insulator 11a and is exposed to the outside from the insertion cavity 11c. Obviously, according to actual needs, the anti-fooling boss 111 and the positioning groove 113 can also be located on the first housing 11b, or one of the anti-fooling boss 111 and the positioning groove 113 is located on the first housing 11b and the other is located on the first insulator 11a. Therefore, it is not limited by Figure 3 as shown; in addition, the positions of the anti-fooling boss 111 and the anti-fooling groove 212 (see Figure 6 ) described below can also be swapped, and the positions of the positioning groove 113 and the positioning boss 213 (see Figure 6 ) described below can also be swapped. Specifically, in Figure 3Among them, as an example, the anti-fooling boss 111 is located at the center of the first insulator 11a and is arranged surrounded by all the first electrical terminals 12 together, so as to ensure the reasonable compactness of the arrangement of the anti-fooling boss 111 and the first electrical terminals 12 on the first insulator 11a; in addition, the positioning groove 113 is a notch groove opened on the side wall of the first insulator 11a, so as to facilitate positioning cooperation with the positioning boss 213 provided on the second housing 21a described below.

[0038] As Figure 6 and Figure 7 shown, as an example, the second mating body 21 further has a second insulator 21b, and the second housing 21a is sleeved on the second insulator 21b. The second housing 21a is a conductive housing; by means of the cooperation of the second housing 21a being a conductive housing and the connection terminal 13 being an elastic conductive terminal, the connection terminal 13 can also be used as a ground terminal or as a signal terminal. Therefore, an energized signal can be realized, and it can also play a role in protecting the circuit terminal, thereby improving the safety and stability of the product during use. And the second electrical terminal 22 is located on the second insulator 21b. Specifically, in Figure 6 and Figure 7 among them, as an example, the second mating body 21 is provided with an anti-fooling groove 212 and a positioning boss 213. Therefore, during the mating process of the first mating body 11 and the second mating body 21, misinsertion is avoided through the cooperation of the anti-fooling groove 212 and the anti-fooling boss 111. In addition, the accuracy of positioning is ensured through the cooperation of the positioning boss 213 and the positioning groove 113. More specifically, in Figure 6 among them, as an example, the positioning boss 213 protrudes inside the second housing 21a and is in positioning cooperation with the positioning groove 113 opened on the first insulator 21a. Therefore, the wear of the electrical connector 100 of the present invention caused by frictional contact during the mating process can be reduced, thereby improving the service durability of the electrical connector 100 of the present invention. It should be noted that when the anti-fooling groove 212 is provided by the first mating body 11 and the anti-fooling boss 111 is provided by the second mating body 21, at this time, the anti-fooling groove 212 is located on the first insulator 21a and is exposed to the outside from the mating cavity 11c, and the anti-fooling boss 111 is located on the second insulator 21b; in addition, the positioning boss 213 can be provided by the first housing 11b and protrude laterally into the mating cavity 11c. Correspondingly, the positioning groove 113 is opened by the second insulator 21b and is located inside the second housing 21a; therefore, it is not limited to the illustration in the drawings.

[0039] As Figure 7As shown, as an example, the buckle structure 211 is a convex ring that protrudes laterally from the second housing 21a. During the insertion of the first mating body 11 and the second mating body 21, the convex ring pushes against the deformation section 13b to deform, causing it to reach a position corresponding to the fastening structure 131. Then, under the restoring elastic force of the deformation section 13b, it fastens to the convex ring (i.e., the one indicated by reference numeral 211). Specifically, in combination with Figure 10 and Figure 12 , as an example, the convex ring 211 is provided with a chamfer structure 2111 at the end spaced apart in the insertion direction of the second mating body 21 to further improve the plugging and unplugging performance between the first connector 10 and the second connector 20.

[0040] Compared with the prior art, by means of "the connection terminal 13 that is arranged separately from the first electrical terminal 12 and has a fastening structure 131, and the second housing 21a that is arranged separately from the second electrical terminal 22 and has a mating buckle structure 211", the connection stability and reliability after the insertion of the first connector 10 and the second connector 20 can be improved, thereby enhancing the stability of current and / or electrical signal transmission.

[0041] It should be noted that one of the first connector 10 and the second connector 20 can be referred to as the male connector and the other as the female connector. When the first electrical terminal 12 and / or the second electrical terminal 22 is selected as a non-retractable probe, i.e., a one-piece pin, at this time, the first electrical terminal 12 and / or the second electrical terminal 22 can be processed by turning without the need for mold opening, so the development cost is low. Additionally, the shape and dimensional accuracy of the first electrical terminal 12 and / or the second electrical terminal 22 can also be controlled through turning processes to achieve product shape diversification. When the first electrical terminal 12 and / or the second electrical terminal 22 is selected as a retractable probe, retractable probes with different structures can be used, such as a common three-piece structure that can meet the current requirements of 3A and below, or a four-piece structure that can meet the current requirements of 3A to 10A; among them, the four-piece structure can be a four-piece structure with balls or a four-piece structure with an inner needle shaft, etc. Additionally, the appearance of the first connector 10 and the second connector 20, as well as the number of the first electrical terminal 12 and the second electrical terminal 22, can be designed according to the equipment assembly requirements of the customer to meet the customized design needs. Furthermore, the maximum outer diameter dimension of the electrical connector 100 of the present utility model after the insertion of the first connector 10 and the second connector 20 can be controlled within 12 millimeters, and the number of the first electrical terminal 12 and the second electrical terminal 22 can be controlled within the range of 2 to 12 according to customer requirements to meet different electrical signal transmission functions. Finally, the electrical connector 100 of the present utility model can be welded to the PCB board or can also be welded to the FFC flexible board to achieve the conduction and transmission of electrical signals.

[0042] It is further noted that although the attached Figure 4 、 Figure 10and Figure 12 It shows that the bent portion forming the fastening structure 131 is arranged with its back facing the side wall 112 of the first housing 11b. Obviously, according to actual needs, the bent portion forming the fastening structure 131 can also be arranged with its face facing the side wall 112 of the first housing 11b; when the bent portion forming the fastening structure 131 is arranged with its face facing the side wall 112 of the first housing 11b, at this time, the mating fastening structure 211 can still be a convex ring that protrudes laterally from the second housing 21a, and the convex ring at this time is stuck in the corner position 1311 of the bent portion (see Figure 4 and Figure 12 ).

[0043] The above-disclosed are only the preferred examples of the present utility model. Of course, the scope of rights of the present utility model cannot be limited thereby. Therefore, equivalent changes made according to the claims of the present utility model still fall within the scope covered by the present utility model.

Claims

1. A first connector of an electrical connector, the first connector being mated with a second connector of the electrical connector, comprising a first mating body and a first electrical terminal assembled on the first mating body, characterized in that: The first connector further includes a connecting terminal arranged apart from the first electrical terminal, and the connecting terminal has a locking structure for locking with a second connector of the electrical connector to prevent the second connector from being separated from the first connector.

2. The first connector according to claim 1, characterized in that: The connecting terminal is an elastic conductive terminal, which includes a mounting section installed on the first pair of plug-in bodies and a deformable section that can be elastically deformed and has the snap-fit ​​structure, and the deformable section is connected to the mounting section; or, the connecting terminal is movably assembled on the first pair of plug-in bodies, and the movable direction of the connecting terminal is staggered with the plug-in direction of the first pair of plug-in bodies.

3. The first connector according to claim 2, characterized in that: The first plug-in body includes a first insulator, a first shell disposed on the first insulator, and a plug-in cavity formed between the first insulator and the first shell. The deformation section is located in the plug-in cavity and arranged side by side with the side wall of the first shell. The snap-fit ​​structure faces or faces away from the side wall of the first shell. The first electrical terminal is located on the first insulator.

4. The first connector according to claim 2, characterized in that: The connecting terminals are multiple and are arranged in a spaced relationship around the first electrical terminal. The deformable section has a bending portion at a position adjacent to its end, and the bending portion forms the buckling structure.

5. An electrical connector, comprising a first connector and a second connector for mating, wherein the first connector comprises a first mating body and a first electrical terminal assembled on the first mating body, and the second connector comprises a second mating body for mating with the first mating body and a second electrical terminal assembled on the second mating body for mating with the first electrical terminal, characterized in that: The first connector also includes a connecting terminal arranged to be separated from the first electrical terminal, the connecting terminal has a snap-fit ​​structure, the second pair of plug-in bodies has a second shell arranged to be separated from the second electrical terminal, the second shell has a matching structure for cooperating with the snap-fit ​​structure, and the snap-fit ​​structure blocks the first pair of plug-in bodies and the second pair of plug-in bodies from being separated when snapping with the matching structure.

6. The electrical connector according to claim 5, characterized in that: The connecting terminal is an elastic conductive terminal, which includes a mounting section installed on the first pair of plug-in bodies and a deformable section that can be elastically deformed and has the snap-fit ​​structure, and the deformable section is connected to the mounting section; one of the first pair of plug-in bodies and the second pair of plug-in bodies is provided with an anti-foolproof boss, and the other of the first pair of plug-in bodies and the second pair of plug-in bodies is provided with an anti-foolproof groove.

7. The electrical connector according to claim 6, characterized in that: The first plug-in body comprises a first insulator, a first shell sleeved on the first insulator, and an plug-in cavity formed between the first insulator and the first shell, the deformation section is located in the plug-in cavity and arranged side by side with the side wall of the first shell, the snap-fit ​​structure faces or faces away from the side wall of the first shell, and the first electrical terminal is located on the first insulator; the second plug-in body also has a second insulator, the second shell sleeved on the second insulator, the second shell is a conductive shell, and the second electrical terminal is located on the second insulator.

8. The electrical connector according to claim 7, characterized in that: The second shell is provided with a positioning boss that protrudes laterally into the second shell, and the first insulator is provided with a positioning groove that cooperates with the positioning boss and is exposed to the outside from the insertion cavity; or, the first shell is provided with a positioning boss that protrudes laterally into the insertion cavity, and the second insulator is provided with a positioning groove that cooperates with the positioning boss and is located in the second shell.

9. The electrical connector according to claim 6, characterized in that: The deformation section has a bend at a position adjacent to its end, and the bend forms the buckling structure, and the buckling structure is a convex ring protruding laterally from the second shell; the convex ring has a chamfered structure at the end separated from the plug-in direction of the second plug-in body; the first electrical terminal and the second electrical terminal are both extended and arranged along the plug-in direction, and the connecting terminals are multiple and are arranged separately around the first electrical terminal.

10. The electrical connector according to claim 5, characterized in that: At least one of the first electrical terminal and the second electrical terminal is a telescopic probe, and the first electrical terminal is separated from the second electrical terminal by a preset distance when the first pair of plug-in bodies and the second pair of plug-in bodies are inserted to a position where the snap-fit ​​structure and the matching structure are in contact, and the first electrical terminal abuts against the second electrical terminal when the first pair of plug-in bodies and the second pair of plug-in bodies are inserted to a position where the snap-fit ​​structure and the matching structure are snapped together.

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