Plug

Abstract

A step through hole is installed in a head shell, a pin assembly is installed in a large hole of the step through hole, a sliding shaft is installed in a small hole of the step through hole in a sliding fit mode, a plurality of first sealing rings are installed on the sliding shaft in a sleeved mode, and the first sealing rings are located in the small hole of the step through hole. The front end of the sliding shaft protrudes out of a small hole of the step through hole, a limiting rod penetrates through the protruding end of the sliding shaft in the radial direction, an annular groove is formed in the step face of the step through hole, a compression spring is sleeved with the annular groove, the rear end of the sliding shaft is connected with the pin assembly, and the bottom of the compression spring abuts against the pin assembly. And the elastic restoring force applied to the pin assembly by the compression spring is greater than the friction force between the first sealing ring and the small hole of the step through hole. The beneficial effects of the utility model are that when the connector needs to be plugged, the limiting rod is pulled out, the pin assembly moves towards the socket under the action of the elastic restoring force of the compression spring, and the plugging of the jack and the pin is realized, thereby realizing signal transmission.

Description

TECHNICAL FIELD

[0001] The utility model relates to underwater connector especially a plug. BACKGROUND

[0002] The connector realizes the transmission of signal through the insertion of the plug and the socket, but some connectors need to keep the plug and the socket separated when not in use, and the plug and the socket are inserted when in use, and since the connector is used underwater, the existing connector is difficult to keep separated when not in use and inserted quickly when in use. SUMMARY

[0003] The utility model discloses a plug.

[0004] The utility model discloses a plug, including head casing body, install the step through -hole in head casing body, install the pin assembly in the big hole of step through -hole, the sliding cooperation of installing the sliding axle in the small hole of step through -hole, the first sealing ring of being equipped with a plurality of on sliding axle, first sealing ring is located in the small hole of step through -hole, and the front end of sliding axle projects the small hole of step through -hole, and the projecting end of sliding axle is radially equipped with the limiting rod, the step surface of step through -hole is equipped with the annular groove, and the annular groove is equipped with the compression spring, and the rear end of sliding axle is connected with pin assembly, and the bottom of compression spring is pressed on pin assembly, and the elastic recovery force that compression spring exerts to pin assembly is greater than the friction between first sealing ring and the small hole of step through -hole.

[0005] Optionally, the pin assembly comprises, from front to back, a pressing plate, an insulating sheet and a head mounting plate, and the pressing plate, the insulating sheet and the head mounting plate are locked by locking screws, the head mounting plate is provided with a plurality of pins, the sliding shaft is connected with the pressing plate, and the compression spring abuts against the pressing plate.

[0006] Optionally, the rear end of the pressing plate is provided with a sink, the bottom of the sink is provided with a through hole, the rear end of the sliding shaft is provided with a limiting head matched with the sink, the limiting head is fitted in the sink, and the front end of the sliding shaft passes through the through hole.

[0007] Optionally, the rear end of the head casing body is provided with a rotation-stopping notch, the head mounting plate is radially provided with a rotation-stopping sliding block matched with the rotation-stopping notch, and the rotation-stopping sliding block is fitted in the rotation-stopping notch.

[0008] Optionally, the rear end of the head casing body is provided with an external thread.

[0009] Optionally, the front end of the head casing body is provided with an annular sealing groove on the outer side wall, and the second sealing ring is fitted in the sealing groove.

[0010] The utility model has the following advantages: the plug of the utility model can realize the quick insertion of the connector through the pulling of the limiting rod, therefore, the connector can be assembled in the factory, at this time, the plug and the socket are not inserted, then after being assembled underwater, when the connector needs to be inserted, the limiting rod is pulled out, the pin assembly moves to the socket under the elastic recovery force of the compression spring, the insertion of the jack and the pin is realized, the signal transmission is realized, and the electrical system works. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the structure schematic diagram of the utility model;

[0012] Figure 2 It is the sectional view schematic diagram of the utility model;

[0013] Figure 3 It is the structure schematic of the plug Figure 1 ;

[0014] Figure 4 It is the structure schematic of the plug Figure 2 ;

[0015] Figure 5 It is the structure schematic of the plug Figure 3 ;

[0016] Figure 6 It is the sectional view schematic diagram of A-A in Figure 4 ;

[0017] Figure 7 It is the sectional view schematic diagram of B-B in Figure 5 ;

[0018] In the drawing, 100 - plug, 300 - sleeve, 101 - limiting rod, 102 - head casing, 103 - sliding shaft, 104 - first sealing ring, 105 - compression spring, 106 - annular groove, 107 - pressing plate, 108 - insulating sheet, 109 - rotation stopping notch, 110 - head mounting plate, 111 - pin, 112 - second sealing ring, 113 - rotation stopping sliding block, 114 - locking screw, 115 - fastening screw, 201 - seat casing, 202 - seat mounting plate, 203 - rear mounting plate, 204 - jack, 205 - clamping ring, 206 - sliding gap. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0021] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0022] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0023] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] As Figure 1 andFigure 2 As shown in the figure, an underwater connector comprises a sleeve 300, a plug 100 and a socket; in this embodiment, as shown in the figure, Figures 3-7 As shown in the figure, the plug 100 comprises a head shell 102, as shown in the figure, Figure 6 and Figure 7 As shown in the figure, a stepped through hole is installed in the head shell 102, a pin assembly is installed in the large hole of the stepped through hole, a sliding shaft 103 is slidingly and fittingly installed in the small hole of the stepped through hole, a plurality of first sealing rings 104 are sleeved on the sliding shaft 103, the first sealing rings 104 are located in the small hole of the stepped through hole, the front end of the sliding shaft 103 protrudes out of the small hole of the stepped through hole, and the protruding end of the sliding shaft 103 is radially provided with a limiting rod 101, an annular groove 106 is formed on the stepped surface of the stepped through hole, a compression spring 105 is sleeved in the annular groove 106, the rear end of the sliding shaft 103 is connected with the pin assembly, the bottom of the compression spring 105 abuts against the pin assembly, and the elastic restoring force of the compression spring 105 on the pin assembly is greater than the frictional force between the first sealing ring 104 and the small hole of the stepped through hole; during installation, the compression spring 105 is sleeved in the annular groove 106, then the sliding shaft 103 is connected with the pin assembly, the first sealing rings 104 are sleeved on the sliding shaft 103, the first sealing rings 104 are two and are axially spaced, then the sliding shaft 103 with the sleeved first sealing rings 104 is inserted into the small hole of the stepped through hole, in the process of insertion, the compression spring 105 is compressed, when the front end of the sliding shaft 103 protrudes out of the small hole of the stepped through hole, the limiting rod 101 is provided on the protruding end of the sliding shaft 103, then the external force of the pin assembly is removed, at this time, the limiting rod 101 abuts against the front end surface of the head shell 102 under the action of the elastic restoring force of the compression spring 105, in use, the limiting rod 101 is pulled out of the protruding end of the sliding shaft 103 by using external force, the pin assembly moves axially backward under the action of the elastic restoring force of the compression spring 105, so as to move closer to the socket, and finally the pin assembly and the socket assembly are inserted.

[0026] In this embodiment, as shown in the figure, Figure 6 and Figure 7 As shown in the figure, an annular sealing groove is formed on the outer side wall of the front end of the head shell 102, and a second sealing ring 112 is installed in the sealing groove.

[0027] In this embodiment, as shown in the figure, Figure 2As shown, the socket comprises a seat shell 201 mounted in the rear end inner cavity of the sleeve 300, and a jack assembly is mounted in the seat shell 201; the rear end of the head shell 102 is provided with external threads, and the sleeve 300 is provided with internal threads, and the sleeve 300 and the head shell 102 are locked by threads, and the rear end surface of the head shell 102 abuts against the front end surface of the seat shell 201, and the sliding gap 206 is provided between the pin assembly and the jack assembly, and the pin assembly is located in front of the jack assembly; when the connector is assembled, the plug 100 is assembled first, then the socket is assembled, and then the socket is mounted in the rear end inner cavity of the sleeve 300, and finally the sleeve 300 and the seat shell 201 are locked by threads; since the sliding gap 206 is provided between the pin assembly and the jack assembly, and the pin assembly is located in front of the jack assembly, that is, the pin assembly and the jack assembly do not interfere with each other during the locking process of the sleeve 300 and the head shell 102, so that the reliability of the mounting of the sleeve 300 and the head shell 102 is ensured.

[0028] In the embodiment, as shown in Figure 6 , Figure 7 , the pin assembly comprises, from front to back, a pressing plate 107, an insulating sheet 108 and a head mounting plate 110, and the pressing plate 107, the insulating sheet 108 and the head mounting plate 110 are locked by a locking screw 114, a plurality of pins 111 are mounted in the head mounting plate 110, the sliding shaft 103 is connected with the pressing plate 107, and the compression spring 105 abuts against the pressing plate 107; further, the rear end of the pressing plate 107 is provided with a sink groove, the bottom of the sink groove is provided with a through hole, the rear end of the sliding shaft 103 is provided with a limiting head matched with the sink groove, the limiting head is fitted in the sink groove, and the front end of the sliding shaft 103 passes through the through hole; preferably, the outer diameter of the pressing plate 107, the insulating sheet 108 and the head mounting plate 110 matches the inner diameter of the head shell 102, so that the inner cavity of the head shell 102 has a guiding effect.

[0029] In the embodiment, as shown in Figure 3 , Figure 6 , Figure 7 , the rear end of the head shell 102 is provided with a rotation-stopping notch 109, and the head mounting plate 110 is radially provided with a rotation-stopping sliding block 113 matched with the rotation-stopping notch 109, and the rotation-stopping sliding block 113 is slidingly fitted in the rotation-stopping notch 109; therefore, through the cooperation of the rotation-stopping sliding block 113 and the rotation-stopping notch 109, the pin assembly can only move axially and cannot rotate axially, thereby improving the reliability of the insertion of the pin assembly and the jack assembly.

[0030] In the embodiment, as shown in Figure 2As shown, the socket assembly comprises a seat mounting plate 202, a socket 204 and a rear mounting plate 203, the seat mounting plate 202 and the rear mounting plate 203 are both mounted in the seat shell 201, the socket 204 corresponding to the pin 111 is mounted on the seat mounting plate 202, and the socket 204 extends backward and passes out from the rear mounting plate 203, an annular clamping groove is arranged in the rear end inner cavity of the sleeve 300, a clamping ring 205 is mounted in the annular clamping groove, the clamping ring 205 abuts against the head mounting plate 110, and the head mounting plate 110 abuts against the seat mounting plate 202, a step surface is arranged in the head shell 102, and an abutting surface is arranged on the head mounting plate 110 and abuts against the step surface, when the socket assembly is installed, the socket 204 is first mounted in the seat mounting plate 202, then the rear mounting plate 203 is bonded with the seat mounting plate 202, and the rear end of the socket 204 passes out from the rear mounting plate 203, preferably, the rear mounting plate 203 and the seat mounting plate 202 are bonded by EC-104 epoxy adhesive, then the seat mounting plate 202 and the rear mounting plate 203 are installed in the seat shell 201 together, and finally the clamping ring 205 is mounted in the annular clamping groove, so that the abutting surface of the head mounting plate 110 abuts against the step surface of the head shell 102.

[0031] In the embodiment, as shown in Figure 2 The rear end surface of the sleeve 300 is provided with a radial inward convex ring, the seat shell 201 abuts against the front end surface of the convex ring, when the socket is installed, the seat shell 201 is placed in the sleeve 300, when the sleeve 300 is locked with the head shell 102, the rear end surface of the head shell 102 abuts against the front end surface of the seat shell 201, so that the rear end surface of the seat shell 201 abuts against the front end surface of the convex ring, and when the rear end surface of the head shell 102 abuts against the front end surface of the seat shell 201 during locking, the sleeve 300 cannot rotate any more, in order to avoid loosening between the sleeve 300 and the head shell 102, a plurality of locking screw holes are radially arranged on the outer circumference of the sleeve 300, and fastening screws 115 are mounted in the locking screw holes, preferably, the fastening screws 115 are three and uniformly distributed on the same circumference.

[0032] The working process of the utility model is as follows: after the connector is assembled, the front end is put into the liquid, the first sealing ring 104 and the second sealing ring 112 provide sealing performance, ensure normal use of the product, after assembly, a pulling force is applied to the limiting rod 101, ensure that the limiting rod 101 does not move under the pulling force, the pulling force at this time is 90±5N, under the action of the pulling force, the limiting rod 101 remains stationary, and then ensure that the limiting rod 101 does not separate from the sliding shaft 103 during transportation and storage of the connector, so that the plug 100 and the socket 204 are in an uninserted state when the connector is not used, when used, another pulling force is applied to the limiting rod 101, preferably, the pulling force at this time is 360±10N, the limiting rod 101 quickly separates from the sliding shaft 103 under the action of the pulling force, since the elastic recovery force of the compression spring 105 is greater than the friction force of the first sealing ring 104 and the stepped through hole, the pin assembly approaches the socket assembly under the action of the elastic recovery force of the compression spring 105, and the pin 111 and the corresponding socket 204 are inserted, at this time, the head mounting plate 110 and the seat mounting plate 202 are attached, and the limiting rod 101 is provided with a pull ring, and the limiting rod 101 can be pulled by a cylinder.

[0033] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A plug, characterized by: The head shell is internally provided with a stepped through hole, a large hole of the stepped through hole is internally provided with a pin assembly, a small hole of the stepped through hole is slidingly and fittingly provided with a sliding shaft, the sliding shaft is sleeved with a plurality of first sealing rings, the first sealing rings are located in the small hole of the stepped through hole, a front end of the sliding shaft protrudes from the small hole of the stepped through hole, a protruding end of the sliding shaft is radially provided with a limiting rod, an annular groove is formed in a stepped surface of the stepped through hole, a compression spring is sleeved in the annular groove, a rear end of the sliding shaft is connected with the pin assembly, a bottom of the compression spring is abutted against the pin assembly, and an elastic restoring force applied by the compression spring to the pin assembly is greater than a friction force between the first sealing rings and the small hole of the stepped through hole.

2. A plug according to claim 1, wherein: The pin assembly comprises, from front to back, an abutting plate, an insulating sheet and a head mounting plate, and the abutting plate, the insulating sheet and the head mounting plate are locked by locking screws, the head mounting plate is internally provided with a plurality of pins, the sliding shaft is connected with the abutting plate, and the compression spring is abutted against the abutting plate.

3. A plug according to claim 2, wherein: A rear end of the abutting plate is provided with a sunken groove, a bottom of the sunken groove is provided with a through hole, and a rear end of the sliding shaft is provided with a limiting head matched with the sunken groove, the limiting head is fittingly installed in the sunken groove, and a front end of the sliding shaft passes through the through hole.

4. A plug according to any one of claims 2 or 3, wherein: A rear end of the head shell is provided with a rotation-stopping notch, and the head mounting plate is radially provided with a rotation-stopping sliding block matched with the rotation-stopping notch, the rotation-stopping sliding block is slidingly and fittingly installed in the rotation-stopping notch.

5. A plug according to claim 4, wherein: The rear end of the head shell is provided with an external thread.

6. A plug according to claim 4, wherein: An outer side wall of a front end of the head shell is provided with an annular sealing groove, and the sealing groove is internally provided with a second sealing ring.

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