Sealing aviation plug

Abstract

According to the technical scheme, the sealed aviation plug comprises a shell, a plugging end, a wiring end and a wiring pin, the shell is provided with a first sleeve seat, a second sleeve seat and a third sleeve seat from the plugging end to the wiring end, and the wiring pin comprises a plurality of first terminals and second terminals matched with the first terminals. The first sleeve seat and the second sleeve seat are provided with a pin hole A and a pin hole B which are matched with the first terminals, the first terminals are arranged in the pin hole A and the pin hole B. The third sleeve seat is fixedly provided with a plurality of second terminals, through holes are formed in the centers of the first sleeve seat and the second sleeve seats, the through holes are provided with bolts and nuts, the lower surface of the third sleeve seat is provided with a supporting protrusion, and the supporting protrusion is arranged on the lower surface of the third sleeve seat. According to the utility model, the first sleeve seat, the second sleeve seat, the third sleeve seat and the shell are combined to isolate the internal environment and the external environment, so that the sealing performance is good, and the sealing device is not easy to damage when being shocked and impacted.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution auxiliary equipment, and more specifically to a sealed aviation plug. Background Art

[0002] At present, hermetic connectors are mainly used in airtight cabins and other electrical and radio equipment, which need to maintain airtight performance for electrical connections through walls. Due to the wide range of applications, their structures vary greatly and there are many types. In nuclear power plants, the transmission of instrument signals requires the connection of signal cables. Considering the disassembly and replacement between instruments and signal cables, hermetic connectors are needed to complete the connection.

[0003] However, there are still some defects in the above-mentioned existing technologies. The sealing performance of the existing aviation plug is poor, and external moisture or dust can easily enter between the plug connector and the socket, which greatly affects the performance of the aviation plug. In addition, the durability of the aviation plug itself is not high, and its service life is short in working scenarios with vibration and impact. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a sealed aviation plug.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: comprising a shell, a plug-in end, a wiring end, and a wiring pin, the shell being provided with a first sleeve, a second sleeve, and a third sleeve from the plug-in end to the wiring end, the wiring pin comprising a plurality of first terminals and a second terminal matching the first terminal, the first sleeve and the second sleeve being provided with a pin hole A and a pin hole B corresponding to the first terminal, the first terminal being provided in the pin hole B of the second sleeve and passing through the pin hole A provided in the first sleeve, the third sleeve being fixed with a plurality of second terminals, the first sleeve and the second sleeve being provided with a through hole in the center thereof, the through hole being provided with a bolt and a nut, a spring A and a spring B being provided between the first sleeve and the second sleeve, the bolt passing through the spring A, the first terminal being provided passing through the spring B, the lower surface of the third sleeve being provided with a support protrusion, and the second sleeve being provided with an opening corresponding to the support protrusion; a buffer pad being provided between the first sleeve and the third sleeve, the pad contacting the upper end surface of the first sleeve and the support protrusion.

[0006] The utility model is further configured as follows: the shell includes a first shell, a second shell, and an outer ring shell, the first shell is close to the second shell, and the outer ring shell is arranged outside the first shell and the second shell; an inward step is provided at the lower opening of the first shell.

[0007] The present invention is further configured as follows: the upper surface of the second seat has an annular protrusion A extending to the third seat, the side surface of the annular protrusion A is provided with a toothed protrusion A, the lower surface has an annular protrusion B extending downward to the inward step, the outer surface of the annular protrusion B is provided with a toothed protrusion B, the toothed protrusion B is close to the inner surface of the first shell, and the outer diameter of the toothed protrusion B is greater than the minimum inner diameter of the first shell.

[0008] The present invention is further configured as follows: a rubber sleeve is provided between the first sleeve and the bolt; the lower surface of the first sleeve extends outward to form a step; the upper surface of the step is in close contact with the lower surface of the first shell.

[0009] The utility model is further configured as follows: a retaining ring groove B is provided on the outer surface of the third seat, a retaining ring groove B is provided with a corresponding retaining ring B, and a retaining ring groove suitable for the retaining ring B is provided on the second shell.

[0010] The utility model is further configured as follows: the outer ring housing is provided with a retaining ring groove A, and the retaining ring groove A is installed with a corresponding retaining ring A; the outer ring housing is provided with a countersunk hole, the outer surface of the first housing is provided with a corresponding opening A, and gaskets are provided near the surface of the outer ring housing and the second housing.

[0011] The present invention is further configured as follows: the first shell is provided with a flange.

[0012] In summary, the present invention has the following beneficial effects:

[0013] The combination of the first seat, the second seat, the third seat and the shell realizes multi-layer protection, isolates the internal and external environments, and obtains good sealing performance; the springs A and B are provided to provide internal support so that the seal of the present invention is not easily damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an exploded view of this embodiment;

[0015] Figure 2 This is a half-section view of this embodiment;

[0016] Figure 3 It is a cross-sectional view taken along the AA direction of this embodiment;

[0017] Figure 4 This is a cross-sectional view along the axis of this embodiment;

[0018] Reference numerals:

[0019] 1. Shell; 11. First shell; 111. Inward step; 112. Opening A; 113. Flange; 12. Second shell; 121. Retaining ring groove; 13. Outer shell; 131. Countersunk hole; 132. Retaining ring groove A; 133. Retaining ring A; 134. Washer; 2. Terminal pin; 21. First terminal; 211. Spring B; 22. Second terminal; 3. First socket; 31. Pin hole A; 4. Second socket; 41. Annular protrusion A; 42. Toothed protrusion A; 43. Annular protrusion B; 44. Toothed protrusion B; 45. Threaded hole B; 46. Pin hole B; 5. Third socket; 51. Retaining ring groove B; 52. Retaining ring B; 53. Support protrusion; 6. Bolt; 61. Nut; 62. Spring A; 63. Rubber sleeve; 7. Buffer block. DETAILED DESCRIPTION

[0020] The present invention will be described in further detail below with reference to the accompanying drawings.

[0021] This embodiment discloses a sealed aviation plug, such as Figures 1 to 3As shown, it includes a shell 1, a plug-in end, a wiring end, and a wiring pin 2. The shell 1 is provided with a first sleeve 3, a second sleeve 4, and a third sleeve 5 from the plug-in end to the wiring end. The wiring pin 2 includes a plurality of first terminals 21 and a second terminal 22 matching the first terminal 21. The first sleeve 3 and the second sleeve 4 are provided with a pin hole A31 and a pin hole B46 adapted to the first terminal 21. The first terminal 21 is arranged in the pin hole B46 of the second sleeve 4 and passes through the pin hole A31 provided in the first sleeve 3. The third sleeve 5 is fixed with a plurality of second terminals 22. A through hole is provided in the center of the first sleeve 3 and the second sleeve 4. A bolt 6 and a nut 61 are provided in the through hole. A spring A62 and a spring B211 are provided between the first sleeve 3 and the second sleeve 4. The bolt 6 passes through the spring A62. After the spring A62 is installed, it will shrink to the first The sleeve 3 and the second sleeve 4 generate a force, so that the connection between the first sleeve 3, the second sleeve 4 and the bolt 6 and the nut 61 obtains a continuous compression pressure, and a reliable connection state is obtained. The first terminal 21 passes through the spring B211. The spring force generated after the spring B211 is installed continuously acts on the first terminal 21, so that the first terminal 21 is set in the first sleeve and the second sleeve and can be stably compressed and will not move at will; the lower surface of the third sleeve 5 is provided with a support protrusion 53, and the second sleeve 4 is provided with an opening adapted to the support protrusion 53. The support protrusion 53 passes through the opening to contact the first sleeve 3, and supports the third sleeve 5. The second sleeve 4 and the third sleeve 5 cooperate to obtain a relatively stable connection relationship; a buffer pad 7 is provided between the first sleeve 3 and the third sleeve 5, and the pad contacts the upper end surface of the first sleeve 3 and the support protrusion 53. The buffer pad 7 can support the supporting protrusion 53 and the spring A62. When the new model is subjected to impact or vibration, the buffer pad 7 will absorb the impact and vibration. The new model makes the relative positions of the first sleeve 3, the second sleeve 4 and the third sleeve 5 stable by arranging the spring A62, the spring B211, the bolt 6 and the nut 61, and has effective supporting force. It is not easy to move when subjected to force or impact, thereby destroying the sealing effect.

[0022] Further improved, the shell 1 includes a first shell 11, a second shell 12, and an outer ring shell 13. The first shell 11 is close to the second shell 12, and the outer ring shell 13 is arranged on the outside of the first shell 11 and the second shell 12; an inward step 111 is provided at the opening below the first shell 11. The setting of the inward step 111 can cooperate with other components to form an effective sealing contact surface, and at the same time help to position other components.

[0023] Further improvement, the upper surface of the second sleeve 4 has an annular protrusion A41 extending to the third sleeve 5, and the side surface of the annular protrusion A41 is provided with a toothed protrusion A42, the annular protrusion A41 contacts the third sleeve 5 to form a sealing layer, and the toothed protrusion A42 contacts the inner side of the second shell 12 to form a sealing layer. The sealing layer formed by multiple contact surfaces can obtain a good sealing effect; the lower surface has an annular protrusion B43 extending downward to the inward step 111, and the annular protrusion B43 is close to the inward step 111 and supports the second sleeve 4. The contact surface between the annular protrusion B43 and the inward step 111 can form a good sealing effect and make the second sleeve 4 The position arranged in the first shell 11 is controllable, and a tooth-shaped protrusion B44 is provided on the outer surface of the annular protrusion B43. The tooth-shaped protrusion B44 is close to the inner surface of the first shell 11, and the outer diameter of the tooth-shaped protrusion B44 is larger than the minimum inner diameter of the first shell 11. When the second sleeve 4 is arranged on the first shell 11, the tooth-shaped protrusion B44 will undergo a certain degree of deformation, and can form a good sealing layer with the inner wall of the first shell 11 to obtain a better sealing effect; the deformation of the tooth-shaped protrusion B44 will increase the pressure between the second sleeve 4 and the first shell 11, obtain greater friction damping, and make it difficult for axial movement to occur, thereby obtaining a stable working state.

[0024] For further improvement, a rubber sleeve 63 is provided between the first seat 3 and the bolt 6. The provision of the rubber sleeve 63 can improve the sealing between the bolt 6 and the first seat 3. The connection contact surface of the bolt 6 will be subjected to a greater pressure from the bolt 6, which is more prone to fatigue damage compared to other positions. When the rubber sleeve 63 is provided, only the rubber sleeve 63 needs to be replaced during maintenance, saving costs; the lower surface of the first seat 3 extends outward to form a step, and the upper surface of the step is close to the lower surface of the first shell 11. When the installation of the new model is completed, the first seat 3 will be pressed tightly against the connection surface by the first shell 11 to form a better sealing surface, thereby obtaining good sealing.

[0025] like Figure 4 As shown, the outer surface of the third sleeve 5 is provided with a retaining ring groove B51, and the retaining ring groove B51 is provided with a corresponding retaining ring B52. The second shell 12 is provided with a retaining ring groove 121 suitable for the retaining ring B52. The third sleeve 5 is matched with the second shell 12 through the retaining ring B52, so that the third sleeve 5 is arranged in the second shell 12 and the axial position is fixed and will not move up and down.

[0026] Further improvements are made to the outer ring housing 13, which is provided with a retaining ring groove A132, fitted with a corresponding retaining ring A133. This retaining ring A133 limits relative movement between the second housing 12 and the outer ring housing 13. The outer ring housing 13 is provided with a countersunk hole 131, and the outer surface of the first housing 11 is provided with a corresponding opening A112. Screws inserted into the countersunk hole 131 and the opening A112 securely fasten the outer ring housing 13 to the first housing. A gasket 134 is positioned near the surface of the outer ring housing 13 and the second housing 12. This gasket 134 forms a sealing layer outside the contact surface between the outer ring housing 13 and the second housing 12 to block external influences. If the device is subjected to an impact, the gasket 134 can absorb the impact and reduce the impact, thereby extending the service life of the device.

[0027] For further improvement, the first shell 11 is provided with a flange 113, which can provide a firm connection to ensure the safety and reliability of the connection between the equipment. The compact flange design reduces the diameter of the seal and the overall size of the flange, saving space and weight. The disassembly and assembly of the flange connection is relatively simple, which facilitates the maintenance and replacement of the equipment; the flange sealing system can withstand high pressure and high temperature environments and is suitable for various harsh conditions.

[0028] Working principle of the utility model

[0029] During assembly, pass the first housing 11 through the outer ring housing 13 from below, fix the first housing 11 to the outer ring housing 13 by screwing the screws into the opening A112 and the countersunk hole 131, insert the first sleeve 3 from the bottom of the first housing 11, insert the rubber sleeve 63 from the bottom into the center of the first sleeve 3, pass the bolt 6 through the center of the rubber sleeve 63, insert the spring A62 from the top, set the buffer block 7 on the spring A62, insert the spring B211 into the first terminal 21 from the bottom, and orderly set the first terminal 21 with the spring B211 from the bottom of the first sleeve 3 into the pin hole A31 of the first sleeve 3, install the second sleeve 4 into the first housing 11 from top to bottom, so that the first terminal 21 can be appropriately set in the pin hole B46 set in the second sleeve 4. In the process, synchronously rotate the combination formed by the first sleeve 3 and the second sleeve 4, put the nut 61 from the second sleeve 4 into the second sleeve 4, rotate the nut 61 to the full, control the distance between the first sleeve 3 and the second sleeve 4, so that the spring A62 and the spring B211 are fully compressed, and sufficient support is provided for the first sleeve 3 and the second sleeve 4 to obtain the first fitting body; fix the second terminal 22 in the third sleeve 5, and set the third sleeve 5 from the bottom to the second shell 12 through the cooperation of the retaining ring B52 to obtain the second fitting body, and combine the first fitting body and the second fitting body together through the cooperation of the second sleeve and the second terminal 22, move the outer ring shell 13, and set the retaining ring A133 in the outer ring shell 13 to limit the movement between the outer ring shell 13 and the second shell 12 to complete the assembly.

[0030] When in use, insert the assembled plug into the appropriate socket, and complete a reliable connection by tightening the screws set on the flange 113. The flange 113 presses the contact surface between the first set 3 and the socket to obtain a sealing surface with a good sealing effect.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the design concept of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sealed aviation plug, comprising a housing (1), a plug end, a wiring end, and a wiring pin (2), characterized in that: The housing (1) is provided with a first socket (3), a second socket (4), and a third socket (5) from the plug end to the wiring end. The wiring pin (2) includes a plurality of first terminals (21) and second terminals (22) matching the first terminals (21). The first socket (3) and the second socket (4) are provided with a pin hole A (31) and a pin hole B (46) adapted to the first terminal (21). The first terminal (21) is provided in the pin hole B (46) of the second socket (4) and passes through the pin hole A (31) provided in the first socket. The third socket (5) is fixed with a plurality of second terminals (22). The first A through hole is provided in the center of the sleeve (3) and the second sleeve (4), and a bolt (6) and a nut (61) are provided in the through hole. A spring A and a spring B (211) are provided between the first sleeve (3) and the second sleeve (4), and the bolt (6) passes through the spring A. The first terminal (21) passes through the spring B (211). A supporting protrusion (53) is provided on the lower surface of the third sleeve (5), and the second sleeve (4) is provided with an opening adapted to the supporting protrusion (53). A buffer block (7) is provided between the first sleeve (3) and the third sleeve (5), and the block contacts the upper end surface of the first sleeve (3) and the supporting protrusion (53).

2. A sealed aviation plug according to claim 1, characterized in that: The housing (1) comprises a first housing (11), a second housing (12), and an outer ring housing (13); the first housing (11) is close to the second housing (12); the outer ring housing (13) is arranged outside the first housing (11) and the second housing (12); an inward step (111) is provided at the lower opening of the first housing.

3. The sealed aviation plug according to claim 1, characterized in that: The upper surface of the second sleeve (4) is provided with an annular protrusion A (41) extending to the third sleeve (5), the side surface of the annular protrusion A (41) is provided with a toothed protrusion A (42), and the lower surface is provided with an annular protrusion B (43) extending downward to the inward step (111), the outer surface of the annular protrusion B (43) is provided with a toothed protrusion B (44), the toothed protrusion B (44) is close to the inner surface of the first shell (11), and the outer diameter of the toothed protrusion B (44) is larger than the minimum inner diameter of the first shell (11).

4. The sealed aviation plug according to claim 1, characterized in that: A rubber sleeve (63) is provided between the first sleeve (3) and the bolt (6); the lower surface of the first sleeve (3) extends outward to form a step; the upper surface of the step is in close contact with the lower surface of the first shell (11).

5. The sealed aviation plug according to claim 2, characterized in that: The outer surface of the third sleeve (5) is provided with a retaining ring groove B (51), the retaining ring groove B (51) is provided with a corresponding retaining ring B (52), and the second housing (12) is provided with a retaining ring groove (121) that is suitable for the retaining ring B (52).

6. The sealed aviation plug according to claim 2, characterized in that: The outer ring housing (13) is provided with a retaining ring groove A (132), and the retaining ring groove A (132) is installed with a corresponding retaining ring A (133); the outer ring housing (13) is provided with a countersunk hole (131), and the outer surface of the first housing (11) is provided with a corresponding opening A (112), and a gasket (134) is provided near the surface of the outer ring housing (13) and the second housing (12).

7. The sealed aviation plug according to claim 2, characterized in that: The first housing (11) is provided with a flange (113).

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