Underwater separation electric connector

Abstract

The underwater separation electric connector comprises a socket and a plug, the socket comprises a socket shell, a rear-end insulating seat, a switching insulating seat and a contact piece, the rear-end insulating seat is arranged on the inner side of the socket shell, the contact piece is arranged on the rear-end insulating seat, and the switching insulating seat is arranged at one end of the plugging surface of the socket shell; the plug comprises a plug shell, a tail cover, a tail sleeve and an insulating base, the plug shell is connected with the tail sleeve, the tail cover is jointly connected to the outer side of the plug shell and the outer side of the tail sleeve, and the insulating base is arranged at one end of the insertion face of the plug shell and further attached to the tail sleeve in a sleeving mode; the socket and the plug are jointly provided with a locking and sealing mechanism; when the socket and the plug are plugged and butted, the socket and the plug are locked and hermetically connected through the locking and sealing mechanism, and when the socket and the plug are separated, the plug and the socket are unlocked through the locking and sealing mechanism, so that the socket and the plug can be smoothly and easily separated.

Description

Technical Field

[0001] The invention relates to the technical field of electric connectors, in particular to an underwater separation electric connector. Background Art

[0002] The separation connector is an important component for realizing the electrical connection and separation between two electrical devices. When the plug and the socket are connected, the electrical performance connection between the two devices is connected. When the two devices move relative to each other, the plug and the socket are separated and the electrical connection is disconnected.

[0003] Usually, the separation connector is used in the atmospheric environment, and the pressure inside and outside the connector is in a balanced state, so a large pull-out force is not required for separation. However, when the separation connector is used in an underwater environment, under the action of water pressure, when the plug and the socket are separated, the pull-out force applied to the plug needs to overcome the water pressure. The greater the water depth, the greater the separation pull-out force required. At present, the common connector separation methods used in underwater missile launches are explosive cable-cutting separation and electromagnetic separation.

[0004] In the prior art, the patent document with the publication number of "CN104218397B" discloses an underwater separation electrical connector assembly, a socket and a separation detection device. The assembly comprises a plug and a socket, wherein the plug comprises a plug housing, a separation detection device is arranged between the plug and the socket, and the separation detection device comprises a housing and a pressing structure, wherein a movable push rod is arranged in the housing along the front-back direction, the front end of the movable push rod faces the break between the plug and the socket and extends out of the housing, and a short-circuit plate and a detection contact are also arranged in the housing, wherein the short-circuit plate is located at the rear end of the push rod and a separation spring is arranged between the rear side and the housing, and the detection contact is located behind the short-circuit plate, and when the electrical connector of this type separates the plug and the socket underwater, the short-circuit plate is disconnected from the detection contact under the action of the separation spring, and when the plug and the socket are not completely separated, the pressing structure presses the push rod and forces the short-circuit plate to short-circuit the detection contact, thereby reducing the separation failure probability of the existing underwater separation electrical connector assembly.

[0005] In this separation method, the cable is disposable and requires an independently designed cable cutter. Moreover, its separation reliability cannot be tested. The electromagnetic separation method is greatly restricted by the water depth and has a complex structure. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides an underwater separation electrical connector.

[0007] The present invention is achieved through the following technical solutions.

[0008] The present invention provides an underwater separation electrical connector, comprising a socket and a plug, wherein the socket comprises a socket shell, a rear end insulating seat, a transfer insulating seat and a contact piece, wherein the rear end insulating seat is arranged on the inner side of the socket shell, the contact piece is arranged on the rear end insulating seat, and the transfer insulating seat is arranged at one end of the plugging surface of the socket shell;

[0009] The plug includes a plug shell, a tail cover, a tail sleeve and an insulating base. The plug shell is connected to the tail sleeve, the tail cover is commonly connected to the outer side of the plug shell and the outer side of the tail sleeve, the insulating base is arranged at one end of the plug shell mating surface, and the insulating base is also fitted on the tail sleeve; the socket and the plug are commonly provided with a locking sealing mechanism.

[0010] Preferably, the sealing mechanism comprises a locking sleeve, a sealing plug, a pull rod and a first spring, a receiving groove is provided on one side of the socket housing close to the transfer insulating seat, the locking sleeve is fitted in the receiving groove, and the locking sleeve is arranged to penetrate inside;

[0011] The pull rod is slidably inserted into the tail sleeve, one end of the pull rod is connected to the sealing plug, the sealing plug is placed in the plug housing, the other end of the pull rod passes through the tail sleeve, the first spring is sleeved on the pull rod, one end of the first spring close to the sealing plug is connected to the pull rod, and the other end is connected to the inner side of the tail sleeve; the inner side of the locking sleeve is snap-fitted with the sealing plug.

[0012] Preferably, the pull rod is composed of a sealing part, a clamping part and a connecting part, which are connected in sequence, the sealing part is connected to the sealing plug, the connecting part is slidably inserted into the tail sleeve, the cross-sectional diameter length of the sealing part is smaller than the cross-sectional diameter length of the clamping part, and the cross-sectional diameter length of the clamping part is smaller than the cross-sectional diameter length of the connecting part; a bushing is provided on the outside of the pull rod, the bushing is fixedly arranged on the inner side of the tail sleeve, a limiting steel ball is rotatably arranged on the bushing, and the limiting steel ball is in contact with the pull rod.

[0013] Preferably, the bushing sliding sleeve is provided with a sleeve, and the sleeve is fitted with a port of the tail sleeve at one end close to the plug shell. The end of the sleeve away from the plug shell is connected to a second spring, and the end of the second spring away from the sleeve is connected to the bushing, and the second spring is also sleeved on the bushing.

[0014] Preferably, the outer side of the socket shell close to one end of the socket shell inserting surface is inclined.

[0015] Preferably, a connecting groove is provided at the bottom of the accommodating groove, a water injection channel is provided on the socket shell, the connecting groove and the water injection channel are connected, and the connecting groove is also connected to the interior of the locking sleeve; a plurality of water diversion grooves are provided on the outside of the locking sleeve, water injection holes are provided in the water diversion grooves, and the water injection holes are connected to the interior of the locking sleeve.

[0016] Preferably, a first sealing ring is provided on the pull rod.

[0017] Preferably, a sealing groove is provided on the inclined surface of the socket housing, and a second sealing ring is arranged in the sealing groove.

[0018] Preferably, an annular groove is provided on the outer side of the sealing plug, and a third sealing ring is arranged in the annular groove.

[0019] The beneficial effects of the present invention are as follows: 1. When the socket and the plug are plugged in and docked, the transfer insulating seat on the docking surface of the socket and the insulating base on the docking surface of the plug are in contact and connected, and the socket and the plug are locked and sealed by a locking and sealing mechanism, ensuring that the socket and the plug continue to maintain their sealing when connected underwater; when the socket and the plug are separated, the plug and the socket are unlocked by the locking and sealing mechanism, and at this time, the water injection channel on the socket injects water from the outside into the socket, so that the mating surfaces of the socket and the plug are subjected to the same water pressure as the outside, achieving a water pressure balance effect inside and outside the connector, so that the socket and the plug can be separated smoothly and easily, the operation is simple, the structure is reusable, and materials are saved.

[0020] 2. When the socket and the plug are in the docking state, they are connected through the water injection channel, the connecting groove and the locking sleeve, so that the water injection channel is directly connected to the sealing plug, so that the front and rear ends of the pull rod are subjected to the same water pressure. When the socket and the plug are separated, the influence of the water pressure on the force during the movement of the pull rod can be reduced. When the pull rod is pulled, the sealing plug no longer locks and seals the socket and the plug, which helps to quickly separate the socket and the plug. When the socket and the socket are plugged in, pushing the pull rod can quickly achieve a sealed connection between the center hole of the socket and the sealing plug, thereby achieving a sealed connection between the socket and the plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a front view of the socket assembly and the plug assembly of the present invention at the moment of unlocking and separating;

[0023] Figure 3 It is a schematic cross-sectional structural diagram of the socket of the present invention;

[0024] Figure 4 is a schematic cross-sectional structural diagram of the plug of the present invention;

[0025] Figure 5 It is a schematic cross-sectional structural diagram of the transfer insulation base of the present invention;

[0026] Figure 6 is an axonometric view of the locking sleeve of the present invention;

[0027] Figure 7It is an axonometric view of a half-section of the socket housing of the present invention;

[0028] Figure 8 It is a front view of the sealing plug of the present invention.

[0029] Explanation of the reference numerals: 1-socket; 2-plug; 11-socket housing; 12-fourth sealing ring; 13-water injection channel; 14-second sealing ring; 15-adapter insulating seat; 16-locking sleeve; 17-water diversion groove; 18-water injection hole; 19-connecting groove; 110-rear end insulating seat; 111-contact piece; 112-accommodating groove; 21-plug housing; 22-pull rod; 221-sealing part; 222-clamping part; 223-connecting part; 23-first spring; 24-tail cover; 25-tail sleeve; 26-first sealing ring; 27-insulating base; 28-annular limiting groove; 29-bushing; 210-sheath; 211-annular stopper; 212-second spring; 213-limiting steel ball; 214-sealing plug; 215-annular groove; 216-third sealing ring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In the embodiments of this application, refer to Figure 1 , Figure 3 and Figure 5 , comprising a socket 1 and a plug 2, wherein the socket 1 comprises a socket housing 11, a rear end insulating seat 110, a transfer insulating seat 15 and a contact 111, the rear end insulating seat 110 is fixedly arranged on the inner side of the socket housing 11, the contact 111 is fixedly connected to the rear end insulating seat 110, three card slots are opened on the outer side of the socket housing 11, and fourth sealing rings 12 are arranged in the three card slots, and the fourth sealing ring 12 is interference fit with the card slot, so that the socket 1 can enhance the sealing performance of the socket 1 and other contact parts when connecting other contact parts;

[0033] The transfer insulating seat 15 is fixedly arranged at one end of the plugging surface of the socket shell 11, and the end of the socket shell 11 close to the transfer insulating seat 15 is inclined. A sealing groove is opened on the inclined surface of the socket shell 11, and a second sealing ring 14 is arranged in the sealing groove, so that the socket 1 and the plug 2 can be more closely connected, which helps to enhance the sealing of the socket 1 and the plug 2 when they are plugged together.

[0034] Reference Figure 7 A receiving groove 112 is formed at one end of the socket housing 11 close to the transfer insulating seat 15 , a connecting groove 19 is formed at the bottom of the receiving groove 112 , a water injection channel 13 is formed on the socket housing 11 , and the connecting groove 19 is connected to the water injection channel 13 .

[0035] Reference Figure 1 and Figure 4 The plug 2 includes a plug shell 21, a tail cover 24, a tail sleeve 25 and an insulating base 27. The plug shell 21 is fixedly connected to the tail sleeve 25. One end of the tail cover 24 is sealed with the plug shell 21. One end of the tail cover 24 is fixedly connected to the tail sleeve 25 by bolts, so that the tail cover 24 is connected to the outside of the plug shell 21 and the outside of the tail sleeve 25. The insulating base 27 is arranged at one end of the plug-in surface of the plug shell 21 to facilitate plug-in connection with the transfer insulating seat 15. The insulating base 27 is also fitted on the tail sleeve 25 to achieve sealing inside the plug 2.

[0036] In the embodiments of this application, refer to Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 8 The socket 1 and the plug 2 are provided with a locking and sealing mechanism, which includes a locking sleeve 16, a sealing plug 214, a pull rod 22 and a first spring 23. The locking sleeve 16 is arranged in the receiving groove 112, and the outer side of the locking sleeve 16 is closely connected with the inner side wall of the receiving groove 112. The interior of the locking sleeve 16 is through-set, so that the connecting groove 19 is connected with the interior of the locking sleeve 16; a plurality of water diversion grooves 17 are arranged on the outer side of the locking sleeve 16, and the water diversion grooves 17 are connected with the plug-in surface of the socket housing 11. A water injection hole 18 is opened in the water diversion groove 17, and the water injection hole 18 is connected with the interior of the locking sleeve 16;

[0037] The pull rod 22 is composed of a sealing portion 221, a clamping portion 222 and a connecting portion 223, which are connected in sequence. The cross-sectional diameter length of the sealing portion 221 is smaller than that of the clamping portion 222, which is smaller than that of the connecting portion 223. The connecting portion 223 is slidably penetrated into the tail sleeve 25. A first sealing ring 26 is provided on the connecting portion 223, so that when the pull rod 22 slides in the tail sleeve 25, the sealing between the inside of the tail sleeve 25 and the pull rod 22 is continuously maintained. The sealing portion 221 is fixedly connected to a sealing plug 214, which is placed in the plug housing 21, and the inner side of the locking sleeve 16 is clamped and fitted with the sealing plug 214. An annular groove 215 is provided on the outer side of the sealing plug 214, and a third sealing ring 216 is provided in the annular groove 215, which helps to strengthen the sealing between the sealing plug 214 and the locking sleeve 16.

[0038] In order to limit the telescopic movement distance of the pull rod 22, in the embodiment of the present application, refer to Figure 4 An annular limiting groove 28 is opened in the tail sleeve 25, and an annular stopper 211 is fixedly connected to the connecting portion 223, and the annular stopper 211 is closely connected to the annular limiting groove 28. One end of the tail cover 24 connected to the tail sleeve 25 extends into the annular limiting groove 28, which is used to limit the moving distance of the pull rod 22. The first spring 23 is sleeved on the connecting portion 223, and one end of the first spring 23 close to the sealing plug 214 is connected to the annular stopper 211, and the other end is connected to the inner side of the tail sleeve 25.

[0039] When the plug 2 and the socket 1 are plugged into each other, the first spring 23 is in a compressed state, and the first spring 23 pushes the pull rod 22 to make the sealing plug 214 and the locking sleeve 16 sealed, so that the plugging surfaces of the socket 1 and the plug 2 are sealed; the pull rod 22 is pulled back by an external force, and when the pull rod 22 is pulled away from the plug housing 21, it helps to quickly separate the sealing plug 214 and the locking sleeve 16, thereby realizing the rapid separation of the socket 1 and the plug 2, and the first spring 23 makes the sealing plug 214 and the locking sleeve 16 sealed, and the first spring 23 also has a certain buffering and protective effect on the pull rod 22.

[0040] In the embodiments of this application, refer to Figure 4 A bushing 29 is sleeved on the outside of the pull rod 22, and the bushing 29 is fixedly arranged on the inner side of the tail sleeve 25. At the same time, the end of the bushing 29 away from the plug housing 21 is also fitted and fixedly connected with the part of the tail cover 24 extending in the annular limiting groove 28. There is a gap between the rest of the bushing 29 and the tail sleeve 25. An accommodating hole is opened on the bushing 29, and a limiting steel ball 213 is rotatably arranged in the accommodating hole.

[0041] In order to limit and lock the limiting steel ball 213, in the embodiment of the present application, refer to Figure 4The sleeve 29 sliding sleeve is provided with a sleeve 210, and the sleeve 210 is fitted with the end port of the inner side of the tail sleeve 25 close to the plug shell 21. The end of the sleeve 210 away from the plug shell 21 is connected to the second spring 212, and the end of the second spring 212 away from the sleeve 210 is connected to the connecting end of the sleeve 29 and the tail cover 24. The second spring 212 is also sleeved on the sleeve 29, and the limiting steel ball 213 is clamped between the pull rod 22 and the sleeve 210.

[0042] In the embodiment of the present application, when the socket 1 and the plug 2 are plugged in and docked, the end face of the sheath 210 is aligned with the end face of the locking sleeve 16, and the second spring 212 pushes the end face of the sheath 210 to align with the end face of the locking sleeve 16 through its own force, so that the plugging surfaces of the socket 1 and the plug 2 are sealed and connected. When the limiting steel ball 213 passes over the edge of the inner cavity of the locking sleeve 16, the locking sleeve 16 loses the ability to limit the radial movement of the limiting steel ball 213, and the limiting steel ball 213 is pushed into the locking sleeve 16. The first spring 23 pushes the pull rod 22 to move toward the socket 1. After the first spring 23 pushes the pull rod 22 to move toward the socket 1. The pull rod 22 always maintains the position under the thrust of the first spring 23, so that the limiting steel ball 213 is clamped on the sealing part 221, so that the limiting steel ball 213 clamps the clamping part 222, so that the limiting steel ball 213 always clamps the pull rod 22, thereby realizing the locking function of the pull rod 22.

[0043] When the socket 1 and the plug 2 are separated, the pull rod 22 is pulled by an external force, so that the pull rod 22 moves toward the end of the tail sleeve 25 away from the plug housing 21. When the sealing portion 221 passes over the limiting steel ball 213, the locking sleeve 16 completely squeezes the limiting steel ball 213 into the sleeve 29, thereby losing the locking of the plug 2 and unlocking the pull rod 22, thereby realizing the separation of the plug 2 and the socket 1. The second spring 212 pushes the sleeve 210 to move forward, thereby limiting the limiting steel ball 213 in the accommodating hole and clamping it between the sleeve 29 and the sleeve 210, so as to facilitate the next locking of the pull rod 22.

[0044] The working principle of the embodiment of the present application is as follows: when the socket 1 and the plug 2 are plugged in and docked, the adapter insulating seat 15 on the docking surface of the socket 1 and the insulating base 27 on the docking surface of the plug are in contact and connected, and the pull rod 22 is pushed toward the socket by the first spring 23, so that the sealing plug 214 is sealed in the locking sleeve 16, ensuring that the socket 1 and the plug 2 continue to maintain their sealing when connected underwater; when the socket 1 and the plug 2 are separated, the pull rod 22 is pulled toward the end away from the socket by external force, so that the sealing plug 214 is no longer sealed in the locking sleeve 16, and the water injection channel 13 on the socket injects water from the outside into the socket 1, so that the mating surfaces of the socket 1 and the plug 2 are subjected to the same water pressure as the outside, thereby achieving a water pressure balance effect inside and outside the connector, so that the socket 1 and the plug 2 can be separated smoothly and easily.

[0045] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. An underwater separating electrical connector, comprising a socket (1) and a plug (2), characterized in that: The socket (1) comprises a socket housing (11), a rear end insulating seat (110), a transfer insulating seat (15) and a contact piece (111); the rear end insulating seat (110) is arranged on the inner side of the socket housing (11), the contact piece (111) is arranged on the rear end insulating seat (110), and the transfer insulating seat (15) is arranged at one end of the plugging surface of the socket housing (11); The plug (2) comprises a plug shell (21), a tail cover (24), a tail sleeve (25) and an insulating base (27); the plug shell (21) is connected to the tail sleeve (25); the tail cover (24) is connected to the outer side of the plug shell (21) and the outer side of the tail sleeve (25); the insulating base (27) is arranged at one end of the plug-in surface of the plug shell (21); the insulating base (27) is also fitted on the tail sleeve (25); and a locking sealing mechanism is provided on the socket (1) and the plug (2).

2. An underwater separating electrical connector according to claim 1, characterized in that: The sealing mechanism comprises a locking sleeve (16), a sealing plug (214), a pull rod (22) and a first spring (23); a receiving groove (112) is provided on one side of the socket housing (11) close to the transfer insulating seat (15); the locking sleeve (16) is fitted in the receiving groove (112); and the locking sleeve (16) is arranged to penetrate inside; The pull rod (22) is slidably inserted into the tail sleeve (25), one end of the pull rod (22) is connected to the sealing plug (214), the sealing plug (214) is placed in the plug housing (21), the other end of the pull rod (22) is inserted through the tail sleeve (25), the first spring (23) is sleeved on the pull rod (22), one end of the first spring (23) close to the sealing plug (214) is connected to the pull rod (22), and the other end is connected to the inner side of the tail sleeve (25); the inner side of the locking sleeve (16) and the sealing plug (214) are snap-fitted.

3. An underwater separating electrical connector as claimed in claim 2, characterized in that: The pull rod (22) is composed of a sealing portion (221), a clamping portion (222) and a connecting portion (223), wherein the sealing portion (221), the clamping portion (222) and the connecting portion (223) are connected in sequence, the sealing portion (221) is connected to the sealing plug (214), the connecting portion (223) is slidably inserted into the tail sleeve (25), the cross-sectional diameter length of the sealing portion (221) is smaller than the cross-sectional diameter length of the clamping portion (222), and the cross-sectional diameter length of the clamping portion (222) is smaller than the cross-sectional diameter length of the connecting portion (223); a bushing (29) is sleeved on the outside of the pull rod (22), the bushing (29) is fixedly arranged on the inner side of the tail sleeve (25), a limiting steel ball (213) is rotatably arranged on the bushing (29), and the limiting steel ball (213) is in contact with the pull rod (22).

4. An underwater separating electrical connector as claimed in claim 3, characterized in that: The sleeve (29) is slidably sleeved with a sleeve (210), and the sleeve (210) is fitted with a port of the tail sleeve (25) at one end close to the plug housing (21). The end of the sleeve (210) away from the plug housing (21) is connected to a second spring (212), and the end of the second spring (212) away from the sleeve (210) is connected to the sleeve (29), and the second spring (212) is also sleeved on the sleeve (29).

5. An underwater separating electrical connector according to claim 1, characterized in that: The outer side of the socket shell (11) close to one end of the plugging surface of the socket shell (11) is arranged in an inclined manner.

6. An underwater separating electrical connector as claimed in claim 2, characterized in that: A connecting groove (19) is provided at the bottom of the receiving groove (112); a water injection channel (13) is provided on the socket housing (11); the connecting groove (19) is connected to the water injection channel (13); the connecting groove (19) is also connected to the interior of the locking sleeve (16); a plurality of water diversion grooves (17) are provided on the outside of the locking sleeve (16); a water injection hole (18) is provided in the water diversion groove (17); and the water injection hole (18) is connected to the interior of the locking sleeve (16).

7. An underwater separating electrical connector as claimed in claim 2, characterized in that: A first sealing ring (26) is provided on the pull rod (22).

8. An underwater separating electrical connector as claimed in claim 5, characterized in that: A sealing groove is provided on the inclined surface of the socket housing (1), and a second sealing ring (14) is arranged in the sealing groove.

9. An underwater separating electrical connector as claimed in claim 2, characterized in that: An annular groove (215) is provided on the outer side of the sealing plug (214), and a third sealing ring (216) is provided in the annular groove (215).

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