Aviation plug

Abstract

The utility model discloses an aviation plug, and belongs to the field of electric connectors. The electric connector comprises a wiring side shell and a socket side shell, a mounting cavity is formed in the inner side of the wiring side shell and the inner side of the socket side shell, a plugging terminal and an insulating inner sleeve provided with a plurality of terminal jacks are arranged in the mounting cavity, the plugging terminal comprises a wiring end and a plugging end connected with the wiring end, the side periphery of the plugging end is provided with a power connection surface, and the power connection surface is provided with a plurality of terminal jacks. An insulating seed is fixed at the top end of the plugging end; the plugging terminal is connected with a lead on a cable through the wiring end, the plugging end is arranged in the terminal jack in a penetrating manner, and a gap is arranged between the power connection surface and the hole wall of the terminal jack. According to the utility model, the structure of the aviation plug is optimized, the safe use performance of the aviation plug can be effectively improved, and the aviation plug is convenient to assemble and has good practicability.

Description

Technical Field

[0001] The utility model belongs to an electric connector, in particular to an aviation plug. Background Art

[0002] ‌Aviation connectors are mainly used in aviation, military, navigation, nuclear industry, electric power and other fields. Due to its high reliability and stability, it plays an important role in these fields. The composition of aviation connectors involves two parts: aviation plugs and aviation sockets. The assembly between aviation plugs and cables is generally done by passing the cable through the shell of the aviation plug, and then connecting the corresponding wire on the cable to the plug in the aviation plug. The plug in the aviation plug is used to insulate the external plug-in parts through an insulating inner sleeve.

[0003] The outer ends of the terminals on the plug connectors in existing aviation plugs are mostly directly exposed to the outside, but in actual use, all or part of the terminals are charged, that is, after being inserted into the terminal jack of the insulating inner sleeve, while the aviation plug is powered on, and before or during docking with the aviation socket, in some cases, if improper operation or operating errors occur, and the fingers are accidentally extended to the terminal jack of the insulating inner sleeve, when they come into contact with the charged terminal end, there is a certain possibility of electric shock, which affects the safety of the aviation plug. Utility Model Content

[0004] Therefore, the purpose of the present invention is to provide an aviation plug which is safer to use.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides an aviation plug, comprising a wiring side shell for connecting cables and a socket side shell connected to the wiring side shell, wherein the wiring side shell and the inner sides of the socket side shell form an installation cavity, wherein a plug-in terminal and an insulating inner sleeve with a plurality of terminal plug holes are arranged in the installation cavity; the plug-in terminal comprises a wiring terminal and a plug-in terminal connected to the wiring terminal, wherein a power contact surface is arranged on the side periphery of the plug-in terminal, and an insulating seed is fixed on the top end of the plug-in terminal; the plug-in terminal is connected to the wire on the cable through the wiring terminal, the plug-in terminal is inserted into the terminal plug hole, and a gap is arranged between the power contact surface and the hole wall of the terminal plug hole.

[0007] Preferably, the insulating seed includes an outer stopper and a connecting portion connected to the outer stopper, a connecting hole is provided at the top of the plug-in end, the connecting portion is fixed in the connecting hole, and the outer stopper protrudes from the top of the plug-in end.

[0008] Preferably, a plurality of annular protrusions are provided on the outer peripheral surface of the connecting portion, and a plurality of annular grooves adapted to the annular protrusions are formed on the hole wall of the connecting hole.

[0009] Preferably, a terminal positioning seat is also fixed in the installation cavity, the terminal positioning seat is connected to the insulating inner sleeve, and the plug-in terminal is positioned and connected to the terminal positioning seat through a positioning structure.

[0010] Preferably, the positioning structure includes a positioning column integrally provided on the terminal positioning seat and protruding into the terminal insertion hole, the positioning column has a terminal insertion cavity extending through the terminal along its axial direction, a clamping block is provided on the inner wall of the terminal insertion cavity, a clamping groove adapted to the clamping block is formed on the wiring terminal, the wiring terminal is inserted into the terminal insertion cavity and clamped with the clamping groove through the clamping block, thereby constituting a clamping positioning of the plug-in terminal on the terminal positioning seat.

[0011] Preferably, a plurality of dividing grooves extending from the cavity opening of the terminal insertion cavity toward the cavity bottom are formed on the cavity wall of the terminal insertion cavity, and the cavity wall of the terminal insertion cavity and the clamping block are divided into a plurality of elastic clamping claw structures by the plurality of dividing grooves.

[0012] Preferably, a first abutment surface facing the terminal positioning seat is provided in the terminal insertion hole, and a second abutment surface cooperating with the first abutment surface is provided on the plug-in terminal.

[0013] Preferably, the insulating seed is located in the terminal jack, and the outer diameter of the outer stopper is smaller than the outer diameter of the plug-in end and is a tapered structure.

[0014] The positive effect of the utility model is that the structure of the aviation plug is optimized in the utility model. Since an insulating seed is arranged at the top of the plug-in end, the insulating seed plays a blocking role at the outer port of the terminal jack, which can prevent fingers from contacting the top of the plug-in end during operation, thereby enhancing the safety protection performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0016] Figure 1 This is a schematic diagram of the structure of the aviation plug in the utility model;

[0017] Figure 2 for Figure 1 The schematic diagram of the structure of the aviation plug shown is a schematic diagram of the structure of the aviation plug after removing the wiring side housing and the socket side housing;

[0018] Figure 3 It is a schematic diagram of the structure when the terminal positioning seat and the plug-in terminal in the utility model cooperate with each other;

[0019] Figure 4 It is a structural schematic diagram of the plug-in terminal in the utility model;

[0020] Figure 5 It is a cross-sectional view of the plug-in terminal in the utility model.

[0021] The reference numerals shown in the figure are: 1. wiring side housing; 2. socket side housing; 3. plug-in terminal; 31. wiring terminal; 32. plug-in terminal; 33. power contact surface; 34. connecting hole; 35. annular groove; 36. snap-fit ​​groove; 37. second stop surface; 4. insulating inner sleeve; 41. terminal plug hole; 5. insulating seed; 51. outer stopper; 52. connecting part; 53. annular protrusion; 6. terminal positioning seat; 61. positioning column; 62. terminal insertion cavity; 63. snap-fit ​​block; 64. dividing groove; 65. elastic claw structure; 7. cable; 71. wire. DETAILED DESCRIPTION

[0022] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples and cannot be used to limit the protection scope of the utility model.

[0023] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0024] The aviation plug structure of the utility model embodiment is as follows Figures 1 to 5As shown, it includes a wiring side housing 1 for connecting a cable 7 and a socket side housing 2 connected to the wiring side housing 1. The wiring side housing 1 and the socket side housing 2 can be made into one piece or fixedly connected by assembly to form a plug shell; the wiring side housing 1 and the socket side housing 2 form a mounting cavity inside, and a plug terminal 3 and an insulating inner sleeve 4 with a plurality of terminal insertion holes 41 are arranged in the mounting cavity. The insulating inner sleeve 4 is fixed inside the plug shell, and the plug terminal 3 includes a wiring terminal 31 and a plug terminal 32 connected to the wiring terminal 31. The side periphery of the plug terminal 32 is provided with a power connection surface 33, and an insulating inner sleeve 4 is fixed on the top of the plug terminal 32. The insulating seed 5 is made of insulating material; the plug-in terminal 3 is connected to the wire 71 on the cable 7 through the wiring terminal 31, and the plug-in terminal 32 is inserted into the terminal jack 41. A gap is provided between the power contact surface 33 and the hole wall of the terminal jack 41, and the female terminal on the aviation socket is inserted into the gap. When the aviation plug and the aviation socket are mated, the circuit is connected through the contact between the female terminal and the power contact surface 33; since the insulating seed 5 is provided at the top of the plug-in terminal 32, the insulating seed 5 plays a blocking role at the outer port of the terminal jack 41, which can prevent the finger from contacting the top of the plug-in terminal 32 during operation, thereby enhancing the safety protection performance.

[0025] Specifically, the insulating seed 5 can be fixed on the plug-in end 32 by injection molding, clamping, gluing, hot riveting, etc.

[0026] like Figure 5 As shown, the insulating seed 5 includes an outer stopper 51 and a connecting portion 52 connected to the outer stopper 51. A connecting hole 34 is provided at the top of the plug-in end 32. The connecting portion 52 is fixed in the connecting hole 34. The outer stopper 51 protrudes from the top of the plug-in end 32. The outer stopper 51 protruding outward can play a shielding and protective role. The connecting portion 52 extends into the connecting hole 34 to achieve fixed connection between the insulating seed 5 and the plug-in end 32.

[0027] Further reading Figure 5 In order to enhance the connection strength between the connection portion 52 and the connection hole 34, a plurality of annular protrusions 53 are provided on the outer peripheral surface of the connection portion 52, and a plurality of annular grooves 35 adapted to the annular protrusions 53 are formed on the hole wall of the connection hole 34. The annular grooves 35 cooperate with the annular protrusions 53 to enhance the bonding force between the connection portion 52 and the connection hole 34, thereby enhancing the reliability of the installation of the insulating seed 5 on the plug-in end 32.

[0028] like Figure 3As shown, in order to reliably fix the plug-in terminal 3, a terminal positioning seat 6 is also fixed in the installation cavity, the terminal positioning seat 6 is connected to the insulating inner sleeve 4, and the plug-in terminal 3 is positioned and connected to the terminal positioning seat 6 through a positioning structure; during assembly, the plug-in terminal 3 is first connected to the wire 71, and then the plug-in terminal 3 is positioned on the terminal positioning seat 6 through the positioning structure, and then the terminal positioning seat 6 is fixed inside the installation cavity.

[0029] This embodiment provides a specific implementation scheme of a positioning structure: Figure 3 As shown, the positioning structure includes a positioning column 61 which is integrally provided on the terminal positioning seat 6 and protrudes into the terminal insertion hole 41, the positioning column 61 has a terminal insertion cavity 62 which passes through it along its axial direction, and a clamping block 63 is provided on the inner wall of the terminal insertion cavity 62, and a clamping groove 36 adapted to the clamping block 63 is formed on the wiring terminal 31, the wiring terminal 31 is inserted into the terminal insertion cavity 62 and clamped with the clamping groove 36 through the clamping block 63, thereby constituting the clamping positioning of the plug-in terminal 3 on the terminal positioning seat 6, and when assembling, the plug-in terminal 3 is inserted into the terminal insertion cavity 62 along the axial direction, and the plug-in terminal 3 is positioned by the terminal insertion cavity 62 to prevent it from swinging, and further combined with the clamping cooperation formed by the clamping block 63 and the clamping groove 36, the plug-in terminal 3 is effectively positioned.

[0030] Continue to view Figure 3 In order to facilitate the insertion of the terminal 31 into the terminal insertion cavity 62, a plurality of dividing grooves 64 extending from the cavity opening of the terminal insertion cavity 62 toward the cavity bottom are opened on the cavity wall of the terminal insertion cavity 62. The cavity wall of the terminal insertion cavity 62 and the associated clamping block 63 are divided into a plurality of elastic claw structures 65 through the plurality of dividing grooves 64. Since the elastic claw structure 65 has a certain elasticity, the elastic claw structure 65 can be deformed appropriately during the process of inserting the terminal 31 into the terminal insertion cavity 62, and the clamping block 63 is clamped into the clamping groove 36 when the plug-in terminal 3 is installed in place. The assembly process is relatively labor-saving and can improve the convenience of assembly; and since the positioning column 61 extends into the terminal insertion hole 41, the hole wall of the terminal insertion hole 41 can play a role of resisting and limiting the elastic claw structure 65 from the outer periphery of the positioning column 61, so as to prevent the elastic claw structure 65 from expanding and deforming outwards and affecting the cooperation between the clamping block 63 and the clamping groove 36, thereby ensuring the positioning effect of the plug-in terminal 3.

[0031] In order to further strengthen the positioning of the plug-in terminal 3 on the terminal positioning seat 6, a resistance surface 1 facing the terminal positioning seat 6 is provided in the terminal socket 41, and a resistance surface 2 37 that resists and cooperates with the resistance surface 1 is provided on the plug-in terminal 3. The positioning of the plug-in terminal 3 can be strengthened through the resistance cooperation between the resistance surface 2 37 and the resistance surface 1.

[0032] Preferably, the insulating seed 5 is in the terminal jack 41; and the outer diameter of the outer stopper 51 is smaller than the outer diameter of the plug-in end 32 and the outer stopper 51 is a conical structure, so that when the plug-in end 32 of the plug-in terminal 3 is inserted into the female terminal of the aviation socket, the outer stopper 51 is avoided from causing interference, so that the plug-in process is smooth.

[0033] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the present invention still belong to the protection scope of the present invention.

Claims

1. An aviation plug, comprising a wiring side housing (1) for connecting a cable (7) and a socket side housing (2) connected to the wiring side housing (1), wherein the wiring side housing (1) and the socket side housing (2) form an installation cavity inside, wherein a plug-in terminal (3) and an insulating inner sleeve (4) having a plurality of terminal insertion holes (41) are arranged in the installation cavity, characterized in that: The plug terminal (3) comprises a wiring terminal (31) and a plug terminal (32) connected to the wiring terminal (31); a power contact surface (33) is provided on the side of the plug terminal (32), and an insulating seed (5) is fixed on the top of the plug terminal (32); the plug terminal (3) is connected to the wire (71) on the cable (7) through the wiring terminal (31); the plug terminal (32) is inserted into the terminal insertion hole (41), and a gap is provided between the power contact surface (33) and the hole wall of the terminal insertion hole (41).

2. The aviation plug according to claim 1, characterized in that: The insulating seed (5) comprises an outer stopper (51) and a connecting portion (52) connected to the outer stopper (51); a connecting hole (34) is provided at the top of the plug-in end (32); the connecting portion (52) is fixed in the connecting hole (34); and the outer stopper (51) protrudes from the top of the plug-in end (32).

3. The aviation plug according to claim 2, characterized in that: A plurality of annular protrusions (53) are provided on the outer peripheral surface of the connecting portion (52), and a plurality of annular grooves (35) adapted to the annular protrusions (53) are formed on the hole wall of the connecting hole (34).

4. The aviation plug according to claim 1, characterized in that: A terminal positioning seat (6) is also fixed in the installation cavity, the terminal positioning seat (6) is butted against the insulating inner sleeve (4), and the plug-in terminal (3) is positioned and connected to the terminal positioning seat (6) via a positioning structure.

5. The aviation plug according to claim 4, characterized in that: The positioning structure comprises a positioning column (61) which is integrally provided on the terminal positioning seat (6) and protrudes into the terminal insertion hole (41); the positioning column (61) has a terminal insertion cavity (62) extending therethrough along its axial direction; a clamping block (63) is provided on the inner wall of the terminal insertion cavity (62); a clamping groove (36) adapted to the clamping block (63) is formed on the wiring terminal (31); the wiring terminal (31) is inserted into the terminal insertion cavity (62) and clamped with the clamping groove (36) via the clamping block (63), thereby forming a clamping positioning of the plug-in terminal (3) on the terminal positioning seat (6).

6. The aviation plug according to claim 5, characterized in that: A plurality of dividing grooves (64) extending from the cavity opening of the terminal insertion cavity (62) towards the cavity bottom are provided on the cavity wall of the terminal insertion cavity (62), and the cavity wall of the terminal insertion cavity (62) and the clamping block (63) are divided into a plurality of elastic clamping claw structures (65) by the plurality of dividing grooves (64).

7. The aviation plug according to claim 4, characterized in that: A first abutment surface facing the terminal positioning seat (6) is provided in the terminal insertion hole (41), and a second abutment surface (37) abutting against the first abutment surface is provided on the plug-in terminal (3).

8. The aviation plug according to claim 2, characterized in that: The insulating seed (5) is located in the terminal insertion hole (41); the outer diameter of the outer stopper (51) is smaller than the outer diameter of the plug-in end (32) and is a conical structure.

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