Socket and plugging structure

Abstract

The utility model relates to the field of electric connectors, and discloses a socket and a plugging structure, the socket comprises a housing, the housing comprises a connecting housing at least partially covering a front surface layer, a driving member is arranged at the outer side of the housing, the driving member axially penetrates through the connecting housing and drives a movable layer to move, and the movable layer is always electrically connected with the front surface layer in the moving process. The movable layer is pre-tightened between the front surface layer and the back surface layer by the elastic piece and is driven by the driving piece to axially move between the front surface layer and the back surface layer, when the movable layer abuts against the back surface layer, a circuit between the front surface layer and the back surface layer is connected, and when the movable layer is separated from the back surface layer, the circuit between the front surface layer and the back surface layer is disconnected; wherein the driving part is driven by the plug, and the pre-tightening direction of the elastic part is opposite to the driving direction of the driving part. The socket has a relatively large jack space and can realize a short circuit prevention function of an independent socket.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electric connector especially relates to a socket and plug structure. BACKGROUND

[0002] With the continuous development of science and technology, aerospace and other high-tech fields put forward higher requirements for general connectors, in order to avoid the electrical performance failure of the socket in the rain and airflow environment during the flight of the aircraft, after the plug and the socket are separated, the single socket needs to have the requirements of rainproof, back layer short circuit prevention and electrical performance. The commonly used short circuit prevention socket structure of this kind of connector includes non-center lock sleeve type three layer sealing short circuit prevention socket and the like. For example, Chinese patent CN113937546A discloses a high temperature resistant sealing short circuit prevention socket, which comprises a socket front shell and a socket rear shell, a front layer is arranged in the socket front shell, a movable layer is arranged at one end of the socket rear shell, a back layer is arranged at the other end of the socket rear shell, a spring is arranged between the movable layer and the back layer, double insertion holes are arranged on the front layer, double insertion pins are arranged on the movable layer, an insertion hole is arranged on the back layer, and a first sealing ring is arranged between the movable layer and the socket rear shell. However, the above-mentioned socket arranges the guide column for driving the movable layer in the shell, so that the space of the front layer for arranging the contact piece is compressed, and the number of the contact piece is limited, which is difficult to connect with the plug with multiple contact pieces, and the adaptability is low. SUMMARY

[0003] In order to solve the above technical problems, the utility model provides a socket with a large contact piece setting space and can realize the short circuit prevention function of the single socket.

[0004] The specific technical scheme of the utility model is as follows: a socket, comprising a shell, a socket body covered by the shell and a driving member arranged on the outer side of the shell, the socket body comprises a back layer, a front layer combined with a plug and a movable layer arranged between the front layer and the back layer, the shell comprises a connecting shell covering at least part of the front layer, the driving member axially penetrates the connecting shell and drives the movable layer to move, the movable layer always maintains electrical connection with the front layer during the movement, the movable layer is pre-tightened between the front layer and the back layer by an elastic member and axially displaced between the front layer and the back layer in response to the driving of the driving member, when the movable layer abuts against the back layer, the circuit between the front layer and the back layer is connected, when the movable layer is separated from the back layer, the circuit between the front layer and the back layer is disconnected, wherein the driving member is driven by the plug, and the pre-tightening direction of the elastic member is opposite to the driving direction of the driving member.

[0005] When the plug is inserted, the plug drives the driving member to drive the movable layer to move towards the back layer, the force given by the driving member to the movable layer is greater than the pre-tightening force of the elastic member, so that the movable layer abuts against the back layer, the contact member in the movable layer contacts the contact member in the back layer, and the circuit between the front layer and the back layer is in communication, when the plug is pulled out, the movable layer separates from the back layer under the pushing of the elastic member, the contact member in the movable layer is separated from the contact member in the back layer, and the circuit between the front layer and the back layer is disconnected, that is, the short-circuit prevention function of the socket is realized. In the above socket, the driving member is arranged outside the connecting shell and penetrates through the connecting shell, which is convenient for installation and does not occupy the space of the front layer, so that the space of the front layer for arranging the contact member is large, the socket can be connected with the plug provided with multiple contact members, and at the same time, since the driving member is directly exposed to the outside, maintenance personnel can intuitively check whether the driving member is damaged, worn or has other abnormal conditions, so as to replace it in time and ensure the reliable operation of the spaceflight equipment.

[0006] Preferably, one end of the connecting shell away from the back layer is provided with a threaded part, one end of the driving member away from the movable layer is provided with a rotating member capable of rotating circumferentially with the axis of the socket body as the rotation shaft, and the rotating member is capable of axially sliding with the driving member.

[0007] In the above technical solution, when the plug is rotatably inserted into the socket, the outer thread of the plug is threadedly connected with the threaded part, and the plug axially pushes the rotating member, the rotating member pushes the driving member to axially move, and then drives the movable layer to axially move against the elastic force of the spring. By arranging the rotating member, the dry friction between the driving member and the plug is reduced, and the plug and the socket are more convenient to rotatably insert.

[0008] Preferably, a limiting sleeve is arranged on the connecting shell, and when the movable layer is away from the back layer, the limiting sleeve abuts against one end of the rotating member away from the movable layer.

[0009] In the above technical solution, in the process of releasing the elastic force of the elastic member, the rotating member and the driving member will be subjected to a large reverse force, the limiting sleeve can limit the moving range of the rotating member away from the back layer, prevent the rotating member from excessive displacement, and then prevent the driving member from being pulled out of the connecting shell due to the elastic force of the elastic member, thereby improving the sustainability of the short-circuit prevention function of the socket.

[0010] Preferably, a guide hole is arranged on the connecting shell, and the driving member penetrates through the guide hole to drive the movable layer to move.

[0011] In the above technical solution, the guide hole guides the sliding direction of the driving member, so that the driving member stably slides in the axial direction, and the driving efficiency of the driving member on the movable member is improved.

[0012] Preferably, a groove is arranged on the inner wall of the guide hole, a first sealing ring is arranged in the groove, and the first sealing ring is sleeved on the driving member.

[0013] In the technical scheme, the first sealing ring is arranged to play a radial rainproof sealing role between the driving member and the connecting shell.

[0014] Preferably, a second sealing ring is arranged between the inner wall of the connecting shell and the front layer.

[0015] In the technical scheme, the second sealing ring is arranged to play a radial rainproof sealing role between the front layer and the connecting shell.

[0016] Preferably, a third sealing ring is arranged between the inner wall of the shell and the movable layer.

[0017] In the technical scheme, the third sealing ring is arranged to play a radial rainproof sealing role between the movable layer and the shell.

[0018] Preferably, a limiting step for limiting the axial insertion depth of the plug is arranged on the inner wall of the connecting shell, and a sealing pad is arranged at the end of the limiting step away from the back layer.

[0019] In the technical scheme, the limiting step is arranged to accurately control the insertion depth of the plug and improve the insertion efficiency, and the sealing pad is arranged to play an axial sealing role on the connecting part of the plug and the socket.

[0020] Preferably, a first fixing groove is arranged on the movable layer, a second fixing groove is arranged on the back layer, one end of the elastic member is connected with the first fixing groove, and the other end of the elastic member is connected with the second fixing groove.

[0021] In the technical scheme, the elastic member is arranged between the first fixing groove and the second fixing groove, the first fixing groove and the second fixing groove combine to form a receiving space of the elastic member, sufficient and reasonable deformation areas are provided for the compression process of the elastic member, the elastic member is prevented from being twisted and deformed when being compressed due to the small distance between the movable layer and the back layer, meanwhile, the length of the compressed state of the elastic member is prevented from hindering the abutting process of the movable layer and the back layer, so that the movable layer and the back layer can abut smoothly.

[0022] Another specific technical scheme of the utility model is a plug-in structure, which comprises the socket and a plug matched with the socket, the plug comprises a plug body inserted with the front layer, and a locking nut threadedly connected with the connecting shell, and the locking nut drives the driving member.

[0023] The locking nut is threadedly connected with the connecting shell, the pre-tightening direction of the elastic member is opposite to the driving direction of the driving member, the elastic member gives the plug an opposite force through the movable layer and the driving member to reinforce the threaded connection of the plug and the socket, ensures the connection stability between the plug and the socket, and makes the plug-in structure not easy to be loosened by vibration in use.

[0024] Compared with the prior art, the utility model has the advantages of the following:

[0025] (1) have the function that prevents short circuit: the elastic member is established between movable layer and back layer, the elastic member's elasticity pushes movable layer and back layer to separate when socket and plug separate, to realize the function that prevents short circuit of socket, this socket is applicable to standard pull line separation plug product, need not to adjust the contact point type spectrum and interface size of product, saved the design development cost of plug;

[0026] (2) have the function that prevents rain: set up first sealing washer, second sealing washer and sealing pad, form first layer rainproof structure at the front end of socket, set up third sealing washer, form second layer rainproof structure at the middle end of socket, make socket and plug have good rainproof ability when insert, when aircraft encounters rain and high speed airflow's double invasion in the process of flight, this double layer rainproof structure can effectively prevent rain from entering socket inside, ensure aircraft safe operation. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the structure schematic diagram of the utility model;

[0028] Figure 2 It is Figure 1 the local enlarged view of A in

[0029] The figure sign is: 1, threaded part; 2, front layer; 21, first insulator; 3, rotating piece; 4, limit sleeve; 5, driving piece; 6, sealing pad; 7, first sealing washer; 8, second sealing washer; 9, movable layer; 91, second insulator; 92, first fixed slot; 10, third sealing washer; 11, elastic member; 12, shell; 121, connecting casing; 122, rear casing; 13, back layer; 131, third insulator; 132, second fixed slot; 15, limit step; 16, guide hole. DETAILED DESCRIPTION

[0030] The utility model will be further described in connection with examples. The device, connecting structure and method involved in the utility model are all known devices, connecting structures and methods in the art if not specified.

[0031] Example 1

[0032] Refer to Figure 1 and Figure 2The utility model provides a kind of socket, including driving element 5, shell 12 and the socket body being covered by shell 12, the socket body includes back layer 13, and the positive layer 2 of plug insertion with plug and the movable layer 9 between positive layer 2 and back layer 13, movable layer 9 is connected with back layer 13 by elastic element 11, movable layer 9 can be axially moved between positive layer 2 and back layer 13, positive layer 2 is equipped with double jack, the double pin of double jack is equipped on movable layer 9 and keeps the connection state, back layer 13 is equipped with jack, when double jack, double pin and jack three are connected, circuit is communicated.Positive layer 2 is equipped with first insulator 21, movable layer 9 is equipped with second insulator 91, and back layer 13 is equipped with third insulator 131.The shell 12 includes the connecting shell 121 of covering the positive layer 2, and the rear shell 122 of covering movable layer 9 and back layer 13, first insulator 21 is fixedly connected with the inner wall of connecting shell 121, third insulator 131 is fixedly connected with the inner wall of rear shell 122, and second insulator 91 is not fixedly connected with the inner wall of rear shell 122.The driving element 5 is located at the outside of connecting shell 121 and axially penetrates the connecting shell 121 and first insulator 21 and movable layer 9 abuts, and driving element 5 is driven to drive movable layer 9 to move, and movable layer 9 is pre-tightened between positive layer 2 and back layer 13 by elastic element 11 and is axially displaced between positive layer 2 and back layer 13 in response to the driving of driving element 5, and the pre-tightening direction of elastic element 11 is opposite to the driving direction of driving element 5.In the displacement process of movable layer 9, double pin keeps the connection state with double jack, when movable layer 9 abuts with back layer 13, double pin is connected with jack, and at this time, one end of double pin is connected with double jack, and the other end is connected with jack, so that the circuit between positive layer 2 and back layer 13 is communicated, when movable layer 9 is away from back layer 13, double pin is disconnected with jack, so that the circuit between positive layer 2 and back layer 13 is disconnected.In the figure, A direction is the direction of axial movement.The elastic element 11 of the embodiment is spring, and the driving element 5 adopts top rod, and it can be understood that the elastic element 11 can also adopt elastic ring or other elastic components commonly used in the art, and the driving element 5 can also be replaced by other components with driving capacity.In the embodiment, driving element 5 penetrates the connecting shell 121 and first insulator 21 in the state of not being inserted plug, and one end of driving element 5 abuts with movable layer 9, and it can be understood that in another embodiment, driving element 5 only penetrates the connecting shell 121, and first insulator 21 is located below driving element 5 and supports driving element 5, and driving element 5 and movable layer 9 have interval in the state of not being inserted plug, and driving element 5 abuts with movable layer 9 under the driving of plug, and then drives movable layer 9 to move.

[0033] In the socket, the driving member 5 is arranged outside the connecting shell 121 and penetrates the connecting shell 121, which is convenient for installation and does not occupy the space of the front layer 2, so that the front layer 2 can be used for arranging the contact member, the space for connecting the plug provided with multiple contact members is large, and the driving member 5 can be directly exposed to the outside, so that the maintenance personnel can intuitively check whether the driving member 5 is damaged, worn or abnormally, and replace it in time to ensure the reliable operation of the aerospace equipment. The elastic member 11 is arranged between the movable layer 9 and the back layer 13, so that when the socket is not combined with the plug, the movable layer 9 is separated from the back layer 13 under the pre-tightening action of the elastic member 11, and the circuit between the front layer 2 and the back layer 13 is in an open state.

[0034] The connection process of the socket and the adapter plug is as follows: when the plug is inserted, the plug drives the driving member 5 to drive the movable layer 9 to move towards the back layer 13, the force given by the driving member 5 to the movable layer 9 is greater than the pre-tightening force of the elastic member 11, so that the movable layer 9 abuts against the back layer 13, the double pins in the movable layer 9 are connected with the insertion hole in the back layer 13, at this time, one end of the double pins is connected with the double insertion hole of the front layer 2, and the other end is connected with the insertion hole of the back layer 13, so that the circuit between the front layer 2 and the back layer 13 is in communication, when the plug is pulled out, the movable layer 9 is separated from the back layer 13 under the pushing of the elastic member 11, the driving member 5 is reset under the pushing of the movable layer 9, the double pins in the movable layer 9 are separated from the insertion hole in the back layer 13, so that the circuit between the front layer 2 and the back layer 13 is disconnected, that is, the socket realizes the anti-short circuit function.

[0035] Embodiment 2

[0036] Based on embodiment 1, as Figure 1 and Figure 2As shown, the utility model provides a kind of socket, driving member 5 is by three along the axis of socket body Circumferential uniform spacing arrangement of ejector rod, and each ejector rod is connected with rotating member 3 at the end away from the movable layer 9, rotating member 3 can be with the axis of socket body as pivot circumferential rotation, and can slide with the driving member 5 axial direction, plug and front layer 2 when insertion, plug is driven the driving member 5 sliding by rotating member 3.The limit sleeve 4 of threaded connection is located on connecting shell 121, rotating member 3 and driving member 5 are located between limit sleeve 4 and connecting shell 121, and the end of limit sleeve 4 close to rotating member 3 is equipped with the positioning block towards rotating member 3, and the end of rotating member 3 away from movable layer 9 is equipped with the groove matched with positioning block, when movable layer 9 is away from back layer 13, the positioning block is abutted in groove to make rotating member 3 stop displacement.The end of connecting shell 121 away from the back layer 13 is equipped with threaded part 1, and guiding hole 16 is opened in connecting shell 121, and the through hole is equipped on first insulator 21, and the number of guiding hole 16 and through hole corresponds to the number of ejector rod, and the ejector rod is passed through the guiding hole 16 and is abutted with movable layer 9, to drive movable layer 9 moves, and recess is equipped on the inner wall of guiding hole 16, first sealing ring 7 is equipped in the recess, first sealing ring 7 is equipped on ejector rod, and the second sealing ring 8 is equipped between the inner wall of connecting shell 121 and the first insulator 21 of front layer 2, and the limiting step 15 for limiting the axial insertion depth of plug is equipped on the inner wall of connecting shell 121, and the sealing pad 6 is equipped at the end of limiting step 15 away from back layer 13.The third sealing ring 10 is equipped between the inner wall of rear shell 122 and movable layer 9.The first fixed groove 92 is equipped on movable layer 9, the second fixed groove 132 is equipped on back layer 13, one end of elastic member 11 is connected with first fixed groove 92, and the other end is connected with second fixed groove 132.It can be understood that, in another embodiment, driving member 5 is composed of other number of ejector rod.

[0037] In the socket, the threaded part 1 is arranged at the end of the connecting shell 121 away from the back layer 13, and is used for threaded connection with the plug, when the plug is rotatably inserted into the socket, the outer thread of the plug is connected with the thread of the threaded part 1, at the same time, the plug axially pushes the rotating piece 3, the rotating piece 3 pushes the driving piece 5 to axially move, and further drives the movable layer 9 to axially move against the elastic force of the spring. By arranging the rotating piece 3, the dry friction between the driving piece 5 and the plug is reduced, so that the plug and the socket are more convenient to rotatably insert. In the process of releasing the elastic force of the elastic piece 11, the rotating piece 3 and the driving piece 5 are subjected to a larger reverse force, the limiting sleeve 4 can limit the movement range of the rotating piece 3 away from the back layer 13, prevent the rotating piece 3 from excessive displacement, and further prevent the driving piece 5 from being pulled out of the connecting shell 121 due to the elastic force of the elastic piece 11, and improve the sustainability of the short-circuit prevention function of the socket. The guide hole 16 is arranged to guide the sliding direction of the driving piece 5, so that the driving piece 5 stably slides in the axial direction, and the driving efficiency of the driving piece 5 on the movable piece is improved. The elastic piece 11 is arranged between the first fixed groove 92 and the second fixed groove 132, the first fixed groove 92 and the second fixed groove 132 are combined to form a receiving space of the elastic piece 11, and sufficient and reasonable deformation areas are provided for the compression process of the elastic piece 11, so that the elastic piece 11 is prevented from being twisted and deformed when being compressed due to the small distance between the movable layer 9 and the back layer 13, and the length of the compressed state of the elastic piece 11 is prevented from hindering the abutting process of the movable layer 9 and the back layer 13, so that the movable layer 9 and the back layer 13 can abut smoothly. The limiting step 15 is arranged to accurately control the plug insertion depth and improve the plug connection efficiency.

[0038] The socket is provided with the first sealing ring 7, which plays a radial rainproof sealing role between the driving piece 5 and the connecting shell 121, the second sealing ring 8, which plays a radial rainproof sealing role between the front layer 2 and the connecting shell 121, the sealing gasket 6, which plays an axial sealing role on the connecting part of the plug and the socket, and the third sealing ring 10, which plays a radial rainproof sealing role between the movable layer 9 and the shell 12. The first sealing ring 7, the second sealing ring 8 and the sealing gasket 6 form a first rainproof structure at the front end of the socket, and the third sealing ring 10 forms a second rainproof structure at the middle end of the socket, so that the socket has good rainproof ability when the plug is inserted into the socket.

[0039] Embodiment 3

[0040] The utility model provides a kind of plug-in structure, including the socket described in embodiment 1, and the plug compatible with the socket, the plug includes the plug body inserted with front layer 2, and the locking nut connected with the threaded part 1 of connecting shell 121, the locking nut is rotatably connected with the plug body, and the locking nut drives the driving piece 5 axial displacement.

[0041] The connecting process of the plug-in structure is as follows: the plug body is slowly inserted into the front layer 2 of the socket until the plug body contacts the limiting step 15 arranged on the inner wall of the connecting shell 121 of the socket, the locking nut is threadedly connected with the threaded part 1 of the connecting shell 121, in the process of rotating the locking nut, the end surface of the locking nut contacts the end surface of the driving piece 5 and pushes the driving piece 5 to move axially, the driving piece 5 pushes the movable layer 9 against the back layer 13, the double pins in the movable layer 9 are connected with the insertion holes in the back layer 13, at this time, one end of the double pins is connected with the double insertion holes of the front layer 2 and the other end is connected with the insertion holes of the back layer 13, so that the circuit between the front layer 2 and the back layer 13 is in communication, when the plug and the socket are disconnected, the connection between the locking nut and the connecting shell 121 is loosened first, the locking nut is separated from the driving piece 5, the movable layer 9 is separated from the back layer 13 under the pushing of the elastic piece 11, the double pins in the movable layer 9 are separated from the insertion holes in the back layer 13, so that the circuit between the front layer 2 and the back layer 13 is disconnected, and the driving piece 5 is reset under the pushing of the movable layer 9.

[0042] The above is only a preferred embodiment of the present application, and does not limit the present application, any simple modification, change and equivalent structure change according to the technical essence of the present application to the above embodiment still belong to the protection scope of the technical scheme of the present application.

Claims

1. A socket, characterized in that, The utility model relates to a socket, which comprises a shell (12), a socket body covered by the shell (12) and a driving member (5) arranged outside the shell (12), wherein the socket body comprises a back layer (13), a front layer (2) for plugging with a plug and a movable layer (9) arranged between the front layer (2) and the back layer (13); the shell (12) comprises a connecting shell (121) covering at least part of the front layer (2); the driving member (5) axially penetrates the connecting shell (121) and drives the movable layer (9) to move; the movable layer (9) is always electrically connected with the front layer (2) during movement; the movable layer (9) is pre-tightened by an elastic member (11) between the front layer (2) and the back layer (13) and axially displaced between the front layer (2) and the back layer (13) in response to the driving of the driving member (5); when the movable layer (9) abuts against the back layer (13), the circuit between the front layer (2) and the back layer (13) is connected; when the movable layer (9) is separated from the back layer (13), the circuit between the front layer (2) and the back layer (13) is disconnected; wherein the driving member (5) is driven by the plug; the pre-tightening direction of the elastic member (11) is opposite to the driving direction of the driving member (5).

2. A socket according to claim 1, wherein The end of the connecting shell (121) away from the back layer (13) is provided with a threaded part (1); the end of the driving member (5) away from the movable layer (9) is provided with a rotating member (3) capable of rotating around the axis of the socket body; the rotating member (3) can axially slide with the driving member (5).

3. A socket according to claim 2, wherein The connecting shell (121) is provided with a limiting sleeve (4); when the movable layer (9) is separated from the back layer (13), the limiting sleeve (4) abuts against the end of the rotating member (3) away from the movable layer (9).

4. A socket according to claim 1, wherein The connecting shell (121) is provided with a guide hole (16); the driving member (5) penetrates the guide hole (16) to drive the movable layer (9) to move.

5. A socket according to claim 4, wherein The inner wall of the guide hole (16) is provided with a groove; the groove is provided with a first sealing ring (7); the first sealing ring (7) is sleeved on the driving member (5).

6. A socket according to claim 1, wherein The inner wall of the connecting shell (121) is provided with a second sealing ring (8) between the front layer (2).

7. A socket according to claim 1, wherein The inner wall of the shell (12) is provided with a third sealing ring (10) between the movable layer (9).

8. A socket according to claim 1, wherein The inner wall of the connecting shell (121) is provided with a limiting step (15) for limiting the axial insertion depth of the plug; the end of the limiting step (15) away from the back layer (13) is provided with a sealing gasket (6).

9. The socket of claim 1, wherein, The movable layer (9) is provided with a first fixing groove (92); the back layer (13) is provided with a second fixing groove (132); one end of the elastic member (11) is connected with the first fixing groove (92) and the other end is connected with the second fixing groove (132).

10. A plug-in structure, characterized by The socket of claim 1, further comprising a plug adapted to the socket, the plug comprising a plug body to be plugged into the front layer (2), and a locking nut to be screwed to the connecting housing (121), the locking nut driving the driving member (5).

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