Conductive terminal

Abstract

The utility model provides a conductive terminal, the conductive terminal can be arranged in an electric connector to abut against a conductive member in an electronic product to transmit signals, and the conductive terminal comprises a tongue-shaped plugging body guiding plugging structure, a tongue-shaped plugging body abutting structure and a tongue-shaped plugging body hollow hole. The tongue-shaped plugging body guiding plugging structure can guide the conductive member to enter the tongue-shaped plugging body hollow hole to achieve plugging, and the tongue-shaped plugging body abutting structure can elastically abut against the plugged conductive member, so that the problem that the existing miniaturized conductive terminal cannot smoothly abut against the conductive member is solved. And the reliability of the electric connector is further improved.

Description

Technical Field

[0001] The present application relates to an electrical connector component, and in particular to a conductive terminal capable of improving the reliability of the electrical connector. Background Art

[0002] Conductive connectors are indispensable components in electronic products. Generally speaking, electrical connectors include conductive terminals that can abut against conductive components in electronic products to transmit electrical signals. However, due to the trend of miniaturization of conductive terminals, it is easy for the conductive terminals to fail to abut against the conductive components smoothly, thereby affecting the reliability of the electrical connector in transmitting signals.

[0003] Furthermore, when electronic products are moved or subjected to impact or collision, the conductive terminals often lose their ability to abut the conductive components instantly, causing the electronic products to malfunction or even be damaged. Therefore, ensuring that the conductive terminals can maintain contact with the conductive components is an important indicator for evaluating the reliability of electrical connectors.

[0004] It should be noted that for safety reasons, electrical connectors with good reliability can be used in electronic products for aviation, marine, railway and road transportation.

[0005] In view of this, how to provide a conductive terminal to solve the problem that the existing miniaturized conductive terminal is prone to not being able to smoothly abut the conductive component, thereby improving the reliability of the electrical connector has become a technical issue that the industry is eager to challenge and overcome. Summary of the Invention

[0006] In view of the shortcomings of the above-mentioned prior art, the present application provides a conductive terminal capable of providing a conductive component for insertion, the conductive terminal comprising: a terminal body, the terminal body comprising a terminal body top, a terminal body bottom and a terminal body front; and a tongue-shaped plug-in body, the tongue-shaped plug-in body comprising a tongue-shaped plug-in body guiding plug-in structure, a tongue-shaped plug-in body elastic abutment structure and a tongue-shaped plug-in body hollow hole, the tongue-shaped plug-in body is connected to the terminal body and bent to form a tongue-shaped plug-in body upper extension section, a tongue-shaped plug-in body lower extension section and a tongue-shaped plug-in body front extension section, wherein the tongue-shaped plug-in body upper extension section and the tongue-shaped plug-in body lower extension section are respectively located above the terminal body and below the terminal body; the tongue-shaped plug-in body front extension section is respectively located above the terminal body and below the terminal body; the tongue-shaped plug-in body front extension section is respectively located above the terminal body and below the terminal body; the tongue-shaped plug-in body front extension section is respectively located above the terminal body and below the terminal body; the tongue-shaped plug-in body front extension section is respectively located above the terminal body and below the terminal body; the tongue-shaped plug-in body front extension section is respectively located above the terminal body and below the terminal body The upper extension section of the tongue-shaped plug-in body is connected with the lower extension section of the tongue-shaped plug-in body, and the front extension section of the tongue-shaped plug-in body is located in front of the terminal body, so that the tongue-shaped plug-in body includes a U-shaped cross-section; the tongue-shaped plug-in body hollow hole forms a plug-in entrance at the front extension section of the tongue-shaped plug-in body, and the tongue-shaped plug-in body hollow hole forms a plug-in channel at the upper extension section of the tongue-shaped plug-in body and the lower extension section of the tongue-shaped plug-in body; and the tongue-shaped plug-in guiding plug-in structure can guide the conductive component to enter the plug-in channel through the plug-in entrance to achieve plug-in, and the tongue-shaped plug-in body elastic abutment structure avoids the plug-in entrance and is located in the plug-in channel, so that the tongue-shaped plug-in body elastic abutment structure can elastically abut the conductive component in the plug-in channel.

[0007] Preferably, in the conductive terminal of the present application, the elastic abutment structure of the tongue-shaped plug-in body is located at an upper extension section of the tongue-shaped plug-in body or a lower extension section of the tongue-shaped plug-in body.

[0008] Preferably, the conductive terminal of the present application further includes a main side abutment and a primary side abutment, and the terminal body further includes a terminal body main side and a terminal body secondary side, the main side abutment and the secondary side abutment are respectively connected to the terminal body and are respectively located on the main side of the terminal body and the secondary side of the terminal body, the main side abutment and the secondary side abutment also respectively include a main side elastic abutment structure and a primary side elastic abutment structure, the main side elastic abutment structure and the secondary side elastic abutment structure avoid the plug-in entrance and are located in the plug-in channel, and can elastically abut the conductive component in the plug-in channel respectively.

[0009] Preferably, in the conductive terminal of the present application, the tongue-shaped plug-in body elastic abutment structure includes a tongue-shaped plug-in body main side abutment substructure and a tongue-shaped plug-in body secondary side abutment substructure, and the tongue-shaped plug-in body main side abutment substructure and the tongue-shaped plug-in body secondary side abutment substructure are respectively located on the main side of the terminal body and the secondary side of the terminal body.

[0010] Preferably, in the conductive terminal of the present application, the primary-side elastic abutting structure and the secondary-side elastic abutting structure are respectively elastic arm structures.

[0011] Preferably, the conductive terminal of the present application further includes a terminal abutting surface, and the tongue-shaped plug elastic abutting structure, the primary side elastic abutting structure and the secondary side elastic abutting structure respectively abut the conductive component on the terminal abutting surface.

[0012] Preferably, in the conductive terminal of the present application, the terminal abutting surface intersects the conductive component substantially perpendicularly.

[0013] Preferably, the conductive terminal of the present application further includes a terminal abutment space, and the tongue-shaped plug-in elastic abutment structure, the primary side elastic abutment structure and the secondary side elastic abutment structure respectively abut the conductive component in the terminal abutment space.

[0014] Preferably, in the conductive terminal of the present application, the terminal abutting space intersects the conductive component substantially perpendicularly.

[0015] Preferably, in the conductive terminal of the present application, the hollow hole of the tongue-shaped plug-in body includes an upper extension section of the hollow hole, a lower extension section of the hollow hole and a front extension section of the hollow hole, the upper extension section of the hollow hole, the lower extension section of the hollow hole and the front extension section of the hollow hole are connected, and the upper extension section of the hollow hole and the lower extension section of the hollow hole are respectively located at the upper extension section of the tongue-shaped plug-in body and the lower extension section of the tongue-shaped plug-in body to form the plug-in channel, and the front extension section of the hollow hole is located at the front extension section of the tongue-shaped plug-in body to form the plug-in entrance.

[0016] Compared to prior art, the present application provides a conductive terminal that can be disposed in an electrical connector and abut a conductive component in an electronic product to transmit signals. The conductive terminal comprises a tongue-shaped plug-in guide structure, a tongue-shaped plug-in abutment structure, and a tongue-shaped plug-in hollow hole. The tongue-shaped plug-in guide structure guides the conductive component into the tongue-shaped plug-in hollow hole for insertion, while the tongue-shaped plug-in abutment structure elastically abuts the inserted conductive component. This addresses the problem of existing miniaturized conductive terminals being prone to failing to abut the conductive component, thereby improving the reliability of the electrical connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The application drawings will be combined with the description of the following embodiments to make the features and other advantages of the present application more clearly understood.

[0018] Figure 1 Shown is a three-dimensional schematic diagram of a conductive terminal of the present application in a first viewing angle in one embodiment.

[0019] Figure 2 Shown is a perspective schematic diagram of a conductive terminal of the present application in a second viewing angle in one embodiment.

[0020] Figure 3 Shown is a right side schematic diagram of a conductive terminal of the present application in one embodiment.

[0021] Figure 4 Shown is a left side schematic diagram of a conductive terminal of the present application in one embodiment.

[0022] Figure 5 Shown is a front view schematic diagram of a conductive terminal of the present application in one embodiment.

[0023] Figure 6 Shown is a bottom view schematic diagram of a conductive terminal of the present application according to an embodiment.

[0024] Figure 7 Shown is a top view schematic diagram of a conductive terminal of the present application in one embodiment.

[0025] Figure 8 Display as Figure 7 The schematic cross-sectional view of a portion of the conductive terminal is taken along line segment AA.

[0026] Figure 9 Display as Figure 7 The schematic cross-sectional view of a portion of the conductive terminal is taken along line BB.

[0027] Component number description

[0028] 1 conductive terminal

[0029] 11 Terminal body

[0030] 12 Tongue connector

[0031] 120 tongue-shaped plug-in body guide plug-in structure

[0032] 121 tongue-shaped plug-in body elastic abutment structure

[0033] 1211 Tongue-shaped plug-in body main side abutment substructure

[0034] 1212 Tongue-shaped plug-in body secondary side abutment substructure

[0035] 122 Tongue-shaped connector hollow hole

[0036] 1221 plug-in port

[0037] 1222 plug-in channel

[0038] 1223 Extension section above the hollow hole

[0039] 1224 Extension section below the hollow hole

[0040] 1225 hollow hole front extension

[0041] 123 Tongue-shaped connector upper extension

[0042] 124 Tongue-shaped connector lower extension

[0043] 125 Tongue-shaped connector front extension

[0044] 13 Main side abutment

[0045] 131 Main side elastic abutment structure

[0046] 14 Secondary side abutment

[0047] 141 Secondary side elastic abutment structure

[0048] 2 Conductive components

[0049] DU terminal body top

[0050] Below the DD terminal body

[0051] DF terminal body front

[0052] LM terminal body main side

[0053] LS terminal body secondary side

[0054] A Terminal contact surface

[0055] S terminal contact space DETAILED DESCRIPTION

[0056] The following content will be accompanied by drawings and illustrate the technical content of this application through specific embodiments. Those familiar with this technology can easily understand the other advantages and functions of this application from the content disclosed in this specification. This application can be implemented or applied through other different specific embodiments. The details in this specification can be modified and changed in various ways based on different viewpoints and applications without departing from the spirit of this application. In particular, the proportional relationships and relative positions of the various components in the drawings are for illustrative purposes only and do not represent the actual situation of the implementation of this application.

[0057] For the description of the embodiments disclosed in this application, please refer to Figures 1 to 9 .

[0058] The present application provides a conductive terminal that can be disposed in an electrical connector and abut a conductive component in an electronic product to transmit signals. It should be noted that the conductive component can be a component in the form of a conductive terminal structure or an electrical connector structure.

[0059] In this application Figures 1 to 2 In the illustrated embodiment, a conductive terminal 1 is disclosed. The conductive terminal 1 can be plugged into a conductive component 2 . The conductive terminal 1 includes a terminal body 11 , a tongue-shaped plug-in body 12 , a primary-side abutment body 13 , and a primary-side abutment body 14 .

[0060] like Figures 1 to 2 As shown, the terminal body 11 includes a terminal body main side LM, a terminal body secondary side LS, a terminal body upper side DU, a terminal body lower side DD, and a terminal body front DF. The terminal body main side LM and the terminal body secondary side LS are two opposite sides of the terminal body 11; and the terminal body upper side DU, the terminal body lower side DD, and the terminal body front DF are the upper, lower, and front sides of the terminal body 11, respectively.

[0061] like Figure 2 and Figure 5 As shown, the tongue-shaped inserting body 12 includes a tongue-shaped inserting body guiding inserting structure 120, a tongue-shaped inserting body elastic abutting structure 121, and a tongue-shaped inserting body hollow hole 122. The tongue-shaped inserting body 12 is connected to the terminal body 11 and can be a sheet-shaped body that can be bent to form a tongue-shaped inserting body upper extension section 123, a tongue-shaped inserting body lower extension section 124, and a tongue-shaped inserting body front extension section 125.

[0062] like Figure 9 As shown, the tongue-shaped inserting body upper extension section 123 and the tongue-shaped inserting body lower extension section 124 are respectively located at the upper DU and lower DD of the terminal body, while the tongue-shaped inserting body front extension section 125 is located at the front DF of the terminal body. The tongue-shaped inserting body front extension section 125 connects the tongue-shaped inserting body upper extension section 123 and the tongue-shaped inserting body lower extension section 124, respectively, so that the tongue-shaped inserting body 12 has a U-shaped cross-section, thereby improving the structural strength of the tongue-shaped inserting body 12.

[0063] like Figure 9As shown, the tongue-shaped plug-in body hollow hole 122 includes a hollow hole upper extension section 1223, a hollow hole lower extension section 1224 and a hollow hole front extension section 1225. The hollow hole upper extension section 1223, the hollow hole lower extension section 1224 and the hollow hole front extension section 1225 are connected, and the hollow hole upper extension section 1223 and the hollow hole lower extension section 1224 are respectively located at the tongue-shaped plug-in body upper extension section 123 and the tongue-shaped plug-in body lower extension section 124 to form a plug-in channel 1222 at the tongue-shaped plug-in body upper extension section 123 and the tongue-shaped plug-in body lower extension section 124, and the hollow hole front extension section 1225 is located at the tongue-shaped plug-in body front extension section 125 to form a plug-in entrance 1221 at the tongue-shaped plug-in body front extension section 125.

[0064] It should be noted that the tongue-shaped plug-in guiding plug structure 120 can guide the conductive member 2 through the plug-in entrance 1221 into the plug-in channel 1222 to achieve plug-in. In the above embodiment, the tongue-shaped plug-in elastic abutment structure 121 avoids the plug-in entrance 1221, thereby avoiding interfering with the conductive member 2 entering the plug-in channel 1222 through the plug-in entrance 1221. The tongue-shaped plug-in elastic abutment structure 121 is located in the plug-in channel 1222. At this time, the tongue-shaped plug-in 12 can elastically deform to adapt to the shape of the conductive member 2 on the terminal body 11, so that the tongue-shaped plug-in elastic abutment structure 121 can elastically abut the conductive member 2 in the plug-in channel 1222. In this way, the tongue-shaped plug-in elastic abutment structure 121 can provide elastic force to the conductive member 2 to ensure that the conductive terminal 1 can maintain abutment against the conductive member 2, thereby improving the reliability of the electrical connector provided with the conductive terminal 1.

[0065] In this application Figure 9 In the illustrated embodiment, the tongue-shaped insert elastic abutment structure 121 is located in the tongue-shaped insert lower extension section 124. However, this is not limiting. For example, the tongue-shaped insert elastic abutment structure 121 can be located in the tongue-shaped insert upper extension section 123, or even in both the tongue-shaped insert upper extension section 123 and the tongue-shaped insert lower extension section 124, depending on the shape of the conductive member.

[0066] In this application Figures 1 to 2 、 Figures 5 and 6 and Figure 8In the illustrated embodiment, the primary-side abutment body 13 and the secondary-side abutment body 14 are respectively connected to the terminal body 11 and located on the primary side LM and the secondary side LS of the terminal body, respectively. The primary-side abutment body 13 and the secondary-side abutment body 14 further include a primary-side elastic abutment structure 131 and a primary-side elastic abutment structure 141, respectively, such as a spring arm structure. The primary-side elastic abutment structure 131 and the secondary-side elastic abutment structure 141 avoid the insertion entrance 1221 to avoid interfering with the conductive member 2 entering the insertion channel 1222 through the insertion entrance 1221. The primary-side elastic abutment structure 131 and the secondary-side elastic abutment structure 141 are located in the insertion channel 1222 to elastically abut the conductive member 2 in the insertion channel 1222.

[0067] It should be noted that the primary side elastic abutment structure 131 and the secondary side elastic abutment structure 141 can be designed as embossed structures that conform to the tip effect to provide electrostatic discharge for the insertion of the conductive component 2, thereby effectively preventing static electricity from invading the electronic product through the conductive terminal 1 and damaging the internal circuit of the electronic product.

[0068] In addition, the tongue-shaped plug-in body elastic abutment structure 121 includes a tongue-shaped plug-in body main side abutment substructure 1211 and a tongue-shaped plug-in body secondary side abutment substructure 1212. The tongue-shaped plug-in body main side abutment substructure 1211 and the tongue-shaped plug-in body secondary side abutment substructure 1212 are respectively located on the main side LM of the terminal body and the secondary side LS of the terminal body, and can abut the conductive component 2 on the main side LM of the terminal body and the secondary side LS of the terminal body respectively.

[0069] It should be noted that the tongue-shaped plug-in body main side abutment substructure 1211 and the tongue-shaped plug-in body secondary side abutment substructure 1212 can be designed as embossed structures that conform to the tip effect, so as to provide electrostatic discharge for the insertion of the conductive component 2, and effectively prevent static electricity from invading the electronic product through the conductive terminal 1 and damaging the internal circuit of the electronic product.

[0070] In this application Figure 8 In the illustrated embodiment, the conductive terminal 1 further includes a terminal abutment surface A. It should be noted that the tongue-shaped insert elastic abutment structure 121, the primary-side elastic abutment structure 131, and the secondary-side elastic abutment structure 141 respectively abut the conductive member 2 at the terminal abutment surface A. This effectively prevents the conductive member 2 from tilting due to force, ensuring that the conductive terminal 1 maintains contact with the conductive member 2. Optionally, the terminal abutment surface A and the conductive member 2 may be substantially perpendicular.

[0071] In this application Figure 6In the illustrated embodiment, the conductive terminal 1 further includes a terminal abutment space S. It should be noted that the tongue-shaped insert elastic abutment structure 121, the primary-side elastic abutment structure 131, and the secondary-side elastic abutment structure 141 respectively abut the conductive member 2 within the terminal abutment space S. This effectively prevents the conductive member 2 from tilting due to force, ensuring that the conductive terminal 1 maintains contact with the conductive member 2. Optionally, the terminal abutment space S may intersect the conductive member 2 at a substantially perpendicular angle.

[0072] It should be noted that in the above-mentioned embodiments, some of the aforementioned components can also be omitted. For example, in the present application, the conductive terminal can be selected to include only: a terminal body and a tongue-shaped plug-in body. The terminal body includes the upper part of the terminal body, the lower part of the terminal body and the front part of the terminal body. The tongue-shaped plug-in body includes a tongue-shaped plug-in body guiding plug-in structure, a tongue-shaped plug-in body elastic abutment structure and a tongue-shaped plug-in body hollow hole. The tongue-shaped plug-in body is connected to the terminal body and bent to form an upper extension section of the tongue-shaped plug-in body, a lower extension section of the tongue-shaped plug-in body and a front extension section of the tongue-shaped plug-in body, wherein the upper extension section of the tongue-shaped plug-in body and the lower extension section of the tongue-shaped plug-in body are respectively located above the terminal body and below the terminal body; the front extension section of the tongue-shaped plug-in body is respectively connected to the upper extension section of the tongue-shaped plug-in body and the lower extension section of the tongue-shaped plug-in body, and the front extension section of the tongue-shaped plug-in body is located In front of the terminal body, the tongue-shaped plug-in body includes a U-shaped cross-section; the tongue-shaped plug-in body hollow hole forms a plug-in entrance in the front extension section of the tongue-shaped plug-in body, and the tongue-shaped plug-in body hollow hole forms a plug-in channel in the upper extension section of the tongue-shaped plug-in body and the lower extension section of the tongue-shaped plug-in body; and the tongue-shaped plug-in body guiding plug-in structure can guide the conductive component into the plug-in channel through the plug-in entrance to achieve plug-in, and the tongue-shaped plug-in body elastic abutment structure avoids the plug-in entrance and is located in the plug-in channel, so that the tongue-shaped plug-in body elastic abutment structure can elastically abut the conductive component in the plug-in channel.

[0073] In summary, the present application provides a conductive terminal that can be disposed in an electrical connector and abut a conductive component in an electronic product to transmit signals. The conductive terminal includes a tongue-shaped plug-in guide structure, a tongue-shaped plug-in abutment structure, and a tongue-shaped plug-in hollow hole. The tongue-shaped plug-in guide structure can guide the conductive component into the tongue-shaped plug-in hollow hole to achieve insertion, while the tongue-shaped plug-in abutment structure can elastically abut the inserted conductive component, thereby resolving the problem of existing miniaturized conductive terminals being unable to smoothly abut the conductive component, thereby improving the reliability of the electrical connector.

[0074] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Anyone skilled in the art will be able to modify and alter the above embodiments without departing from the spirit and scope of this application. Therefore, the scope of protection of this application shall be as set forth in the claims of this application.

Claims

1. A conductive terminal, characterized in that: A conductive component can be provided for plugging, wherein the conductive terminal comprises: a terminal body, the terminal body comprising a terminal body top, a terminal body bottom, and a terminal body front; and a tongue-shaped plug-in body, the tongue-shaped plug-in body comprising a tongue-shaped plug-in body guiding plug-in structure, a tongue-shaped plug-in body elastic abutment structure, and a tongue-shaped plug-in body hollow hole; the tongue-shaped plug-in body is connected to the terminal body and is bent to form a tongue-shaped plug-in body upper extension section, a tongue-shaped plug-in body lower extension section, and a tongue-shaped plug-in body front extension section, wherein the tongue-shaped plug-in body upper extension section and the tongue-shaped plug-in body lower extension section are respectively located above the terminal body and below the terminal body; The front extension section of the tongue-shaped plug body is respectively connected to the upper extension section of the tongue-shaped plug body and the lower extension section of the tongue-shaped plug body, and the front extension section of the tongue-shaped plug body is located in front of the terminal body, so that the tongue-shaped plug body includes a U-shaped cross section; The hollow hole of the tongue-shaped plug-in body forms an insertion entrance at the front extension section of the tongue-shaped plug-in body, and the hollow hole of the tongue-shaped plug-in body forms an insertion channel at the upper extension section of the tongue-shaped plug-in body and the lower extension section of the tongue-shaped plug-in body; and The tongue-shaped plug-in guiding plug-in structure can guide the conductive component into the plug-in channel through the plug-in entrance to achieve plug-in. The tongue-shaped plug-in elastic abutment structure avoids the plug-in entrance and is located in the plug-in channel, so that the tongue-shaped plug-in elastic abutment structure can elastically abut the conductive component in the plug-in channel.

2. The conductive terminal according to claim 1, wherein: The elastic abutment structure of the tongue-shaped plug-in body is located at the upper extension section of the tongue-shaped plug-in body or the lower extension section of the tongue-shaped plug-in body.

3. The conductive terminal according to claim 1, wherein: It also includes a main side abutment and a primary side abutment, and the terminal body also includes a terminal body main side and a terminal body secondary side, the main side abutment and the secondary side abutment are respectively connected to the terminal body and are respectively located on the main side of the terminal body and the secondary side of the terminal body, the main side abutment and the secondary side abutment also respectively include a main side elastic abutment structure and a primary side elastic abutment structure, the main side elastic abutment structure and the secondary side elastic abutment structure avoid the plug-in entrance and are located in the plug-in channel, and can elastically abut the conductive component in the plug-in channel respectively.

4. The conductive terminal according to claim 3, wherein: The tongue-shaped plug-in elastic abutment structure includes a tongue-shaped plug-in main side abutment substructure and a tongue-shaped plug-in secondary side abutment substructure, and the tongue-shaped plug-in main side abutment substructure and the tongue-shaped plug-in secondary side abutment substructure are respectively located on the main side of the terminal body and the secondary side of the terminal body.

5. The conductive terminal according to claim 3, wherein: The primary-side elastic abutting structure and the secondary-side elastic abutting structure are respectively elastic arm structures.

6. The conductive terminal according to claim 3, characterized in that: It also includes a terminal abutting surface, and the tongue-shaped plug-in elastic abutting structure, the primary side elastic abutting structure and the secondary side elastic abutting structure respectively abut the conductive component at the terminal abutting surface.

7. The conductive terminal according to claim 6, characterized in that: The terminal abutting surface intersects the conductive component substantially perpendicularly.

8. The conductive terminal according to claim 3, characterized in that: It also includes a terminal abutment space, and the tongue-shaped plug-in elastic abutment structure, the primary side elastic abutment structure and the secondary side elastic abutment structure respectively abut against the conductive component in the terminal abutment space.

9. The conductive terminal according to claim 8, characterized in that: The terminal contact space intersects the conductive component substantially perpendicularly.

10. The conductive terminal according to claim 1, wherein: The hollow hole of the tongue-shaped plug-in body includes an upper extension section of the hollow hole, a lower extension section of the hollow hole and a front extension section of the hollow hole. The upper extension section of the hollow hole, the lower extension section of the hollow hole and the front extension section of the hollow hole are connected, and the upper extension section of the hollow hole and the lower extension section of the hollow hole are respectively located at the upper extension section of the tongue-shaped plug-in body and the lower extension section of the tongue-shaped plug-in body to form the plug-in channel, and the front extension section of the hollow hole is located at the front extension section of the tongue-shaped plug-in body to form the plug-in entrance.

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