Underwater connector

Abstract

A step through hole is formed 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, the sliding shaft is sleeved with a plurality of first sealing rings, 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 stepped through hole, a limiting rod is arranged at the protruding end of the sliding shaft in a penetrating mode in the radial direction, an annular groove is formed in the stepped surface of the stepped through hole, a compression spring is sleeved with the annular groove, and the rear end of the sliding shaft is connected with the pin assembly. And a jack assembly is arranged in the seat shell. The beneficial effects of the invention 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, and enabling an electrical system to work.

Description

Technical Field

[0001] The present invention relates to an underwater connector, in particular to an underwater connector. Background Art

[0002] The connector realizes signal transmission through the mating of a plug and a socket. However, some connectors need to keep the plug and the socket separated when not in use and make them mate when in use. Since this connector is used underwater, it is very difficult for existing connectors to be in a separated state when not in use and to achieve quick mating when in use. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an underwater connector.

[0004] The purpose of the present invention is achieved by the following technical solutions: An underwater connector includes a sleeve, a plug, and a socket. The plug includes a head housing. A stepped through-hole is installed in the head housing. A pin assembly is installed in the large hole of the stepped through-hole. A sliding shaft is slidably fitted in the small hole of the stepped through-hole. A plurality of first sealing rings are sleeved on the sliding shaft. The first sealing rings are located in the small hole of the stepped through-hole. The front end of the sliding shaft protrudes from the small hole of the stepped through-hole. A limiting rod is radially penetrated through the protruding end of the sliding shaft. An annular groove is formed on the stepped surface of the stepped through-hole. A compression spring is sleeved in the annular groove. The rear end of the sliding shaft is connected to the pin assembly. The bottom of the compression spring presses against the pin assembly. And the elastic restoring force exerted by the compression spring on the pin assembly is greater than the friction force between the first sealing ring and the small hole of the stepped through-hole. The socket includes a seat housing. The seat housing is installed in the rear inner cavity of the sleeve. A jack assembly is installed in the seat housing. The rear end of the head housing is provided with an external thread. An internal thread is provided in the sleeve. The sleeve and the head housing are locked by threads. And the rear end face of the head housing abuts against the front end face of the seat housing. And there is a sliding gap between the pin assembly and the jack assembly. The pin assembly is located in front of the jack assembly.

[0005] Optionally, the pin assembly includes a pressure plate, an insulating sheet, and a head mounting plate connected in sequence from front to back. And the pressure plate, the insulating sheet, and the head mounting plate are locked by locking screws. A plurality of pins are installed in the head mounting plate. The sliding shaft is connected to the pressure plate. The compression spring abuts against the pressure plate.

[0006] Optionally, a counterbore is formed at the rear end of the pressure plate. A through-hole is formed at the bottom of the counterbore. The rear end of the sliding shaft is provided with a limiting head matching the counterbore. The limiting head is fitted in the counterbore. And the front end of the sliding shaft passes through the through-hole.

[0007] Optionally, a rotation prevention notch is provided at the rear end of the head housing, and a rotation prevention slider that matches the rotation prevention notch is radially provided on the head mounting plate. The rotation prevention slider is slidably mounted in the rotation prevention notch.

[0008] Optionally, the jack assembly includes a base mounting plate, a jack, and a rear mounting plate. Both the base mounting plate and the rear mounting plate are mounted inside the base housing. A jack corresponding to the pin is mounted on the base mounting plate, and the jack extends rearward and passes through the rear mounting plate. An annular card slot is provided in the inner cavity at the rear end of the sleeve, and a snap ring is mounted in the annular card slot. The snap ring abuts against the head mounting plate, and the head mounting plate abuts against the base mounting plate. A stepped surface is provided in the head housing, and an abutting surface that abuts against the stepped surface is provided on the head mounting plate.

[0009] Optionally, a radially inward convex ring is provided on the rear end surface of the sleeve, and the base housing abuts against the front end surface of the convex ring.

[0010] Optionally, a plurality of locking screw holes are radially provided on the outer circumference of the sleeve, and fastening screws are mounted in the locking screw holes.

[0011] Optionally, the rear mounting plate and the base mounting plate are adhesively connected.

[0012] Optionally, an annular sealing groove is provided on the outer side wall of the front end of the head housing, and a second sealing ring is mounted in the sealing groove.

[0013] The present invention has the following advantages: For the connector of the present invention, through the pulling of the limiting rod, the quick insertion of the connector can be realized. 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 toward the socket under the elastic restoring force of the compression spring, and the insertion of the jack and the pin is realized, thereby realizing signal transmission and enabling the electrical system to work. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic cross-sectional view of the present invention; Figure 3 is a schematic structural diagram of the plug Figure 1 ; Figure 4 is a schematic structural diagram of the plug Figure 2 ; Figure 5 is a schematic structural diagram of the plug Figure 3 ; Figure 6 is Figure 4 the schematic cross-sectional view taken along A-A in Figure 7 is Figure 5Schematic cross-sectional view taken along line B-B; In the figure, 100 - plug, 300 - sleeve, 101 - limiting rod, 102 - head housing, 103 - sliding shaft, 104 - first sealing ring, 105 - compression spring, 106 - annular groove, 107 - pressing plate, 108 - insulating sheet, 109 - anti-rotation notch, 110 - head mounting plate, 111 - pin, 112 - second sealing ring, 113 - anti-rotation slider, 114 - locking screw, 115 - fastening screw, 201 - seat housing, 202 - seat mounting plate, 203 - rear mounting plate, 204 - jack, 205 - snap ring, 206 - sliding gap. Detailed implementation mode

[0015] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only a part rather than all of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0017] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0018] It should be noted that: similar reference numerals and letters denote 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.

[0019] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of the present invention is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and defined, the terms "arrangement", "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] As Figure 1 and Figure 2 shown, an underwater connector includes a sleeve 300, a plug 100, and a socket; in this embodiment, as Figures 3 to 7 shown, the plug 100 includes a head housing 102. As Figure 6 and Figure 7 shown, a stepped through-hole is installed in the head housing 102. A pin assembly is installed in the large hole of the stepped through-hole, and a sliding shaft 103 is slidably fitted 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 from the small hole of the stepped through-hole, and a limiting rod 101 is radially penetrated through the protruding end of the sliding shaft 103. An annular groove 106 is formed on the stepped surface of the stepped through-hole, and a compression spring 105 is sleeved in the annular groove 106. The rear end of the sliding shaft 103 is connected to the pin assembly. The bottom of the compression spring 105 presses against the pin assembly, and the elastic restoring force exerted by 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 to the pin assembly, and two first sealing rings 104 are sleeved on the sliding shaft 103 and are axially spaced apart. Then, the sliding shaft 103 sleeved with the first sealing rings 104 is inserted into the small hole of the stepped through-hole. During the insertion process, the compression spring 105 is compressed. When the front end of the sliding shaft 103 protrudes from the small hole of the stepped through-hole, the limiting rod 101 is penetrated through the protruding end of the sliding shaft 103, and then the external force on the pin assembly is removed. At this time, the limiting rod 101 abuts against the front end face of the head housing 102 under the action of the elastic restoring force of the compression spring 105. During use, an external force is applied to pull the limiting rod 101 out of the protruding end of the sliding shaft 103. The pin assembly axially moves backward under the action of the elastic restoring force of the compression spring 105, so as to move closer to the socket direction, and finally the insertion of the pin assembly and the jack assembly is realized.

[0022] In this embodiment, as Figure 6 and Figure 7As shown, an annular sealing groove is formed on the outer side wall of the front end of the head housing 102, and a second sealing ring 112 is installed in the sealing groove.

[0023] In this embodiment, as Figure 2 shown, the socket includes a socket housing 201, the socket housing 201 is installed in the rear inner cavity of the sleeve 300, and a jack assembly is installed in the socket housing 201; an external thread is formed at the rear end of the head housing 102, an internal thread is formed in the sleeve 300, and the sleeve 300 and the head housing 102 are locked by threads. Moreover, the rear end face of the head housing 102 abuts against the front end face of the socket housing 201, and there is a sliding gap 206 between the pin assembly and the jack assembly. The pin assembly is located in front of the jack assembly. When assembling the connector, first assemble the plug 100, then assemble the socket, then install the socket in the rear inner cavity of the sleeve 300, and finally lock the sleeve 300 and the socket housing 201 by threads. Since there is a sliding gap 206 between the pin assembly and the jack assembly, and the pin assembly is located in front of the jack assembly, that is to say, during the thread locking process of the sleeve 300 and the head housing 102, the pin assembly and the jack assembly do not interfere with each other, thus ensuring the reliability of the installation of the sleeve 300 and the head housing 102.

[0024] In this embodiment, as Figure 6 and Figure 7 shown, the pin assembly includes a pressure plate 107, an insulating sheet 108 and a head mounting plate 110 connected in sequence from front to back. The pressure plate 107, the insulating sheet 108 and the head mounting plate 110 are locked by locking screws 114. A plurality of pins 111 are installed in the head mounting plate 110. The sliding shaft 103 is connected to the pressure plate 107, and the compression spring 105 abuts against the pressure plate 107. Further, optionally, a sink is formed at the rear end of the pressure plate 107, a through hole is formed at the bottom of the sink, a limiting head matching the sink is provided at the rear end of the sliding shaft 103, the limiting head is fitted and installed in the sink, and the front end of the sliding shaft 103 passes through the through hole. Preferably, the outer diameters of the pressure plate 107, the insulating sheet 108 and the head mounting plate 110 match the inner diameter of the head housing 102, so that the inner cavity of the head housing 102 has a guiding effect.

[0025] In this embodiment, as Figure 3 、 Figure 6 and Figure 7 shown, a rotation prevention notch 109 is formed at the rear end of the head housing 102, and a rotation prevention slider 113 matching the rotation prevention notch 109 is radially provided on the head mounting plate 110. The rotation prevention slider 113 is slidably fitted and installed in the rotation prevention notch 109. Therefore, through the cooperation of the rotation prevention slider 113 and the rotation prevention notch 109, the pin assembly can only move axially and cannot rotate axially, thus improving the reliability of the insertion of the pin assembly and the jack assembly.

[0026] In this embodiment, as Figure 2 shown, the jack assembly includes a base mounting plate 202, a jack 204, and a rear mounting plate 203. The base mounting plate 202 and the rear mounting plate 203 are both installed inside the base housing 201. A jack 204 corresponding to the pin 111 is installed on the base mounting plate 202, and the jack 204 extends rearward and passes through the rear mounting plate 203. An annular groove is formed in the inner cavity at the rear end of the sleeve 300, and a snap ring 205 is installed in the annular groove. The snap ring 205 abuts against the head mounting plate 110, and the head mounting plate 110 abuts against the base mounting plate 202. A stepped surface is formed in the head housing 102, and an abutting surface that abuts against the stepped surface is provided on the head mounting plate 110. When installing the jack assembly, first install the jack 204 inside the base mounting plate 202, then bond the rear mounting plate 203 to the base mounting plate 202, and make the rear end of the jack 204 pass through the rear mounting plate 203. Preferably, the rear mounting plate 203 and the base mounting plate 202 are bonded together by EC-104 epoxy adhesive. Then, install the base mounting plate 202 and the rear mounting plate 203 together inside the base housing 201. Finally, install the snap ring 205 in the annular groove, so that the abutting surface of the head mounting plate 110 abuts against the stepped surface of the head housing 102.

[0027] In this embodiment, as Figure 2 shown, a radially inward convex ring is provided on the rear end surface of the sleeve 300, and the base housing 201 abuts against the front end surface of the convex ring. When installing the socket, place the base housing 201 inside the sleeve 300. After the sleeve 300 is locked with the head housing 102, the rear end surface of the head housing 102 abuts against the front end surface of the base housing 201, so that the rear end surface of the base housing 201 abuts against the front end surface of the convex ring. When locking, after the rear end surface of the head housing 102 abuts against the front end surface of the base housing 201, the sleeve 300 can no longer rotate. In order to prevent loosening between the sleeve 300 and the head housing 102, a number of locking screw holes are radially formed on the outer circumference of the sleeve 300, and fastening screws 115 are installed in the locking screw holes. Preferably, there are three fastening screws 115, and they are evenly distributed on the same circumference.

[0028] The working process of the present invention is as follows: After the connector is assembled, its front end is placed upside down in a liquid. The first sealing ring 104 and the second sealing ring 112 provide sealing performance to ensure the normal use of the product. After assembly, a pulling force is applied to the limiting rod 101 to ensure that the limiting rod 101 does not move under this pulling force. At this time, the pulling force is 90 ± 5 N. Under the action of this pulling force, the limiting rod 101 remains stationary, thereby ensuring that during transportation and storage of the connector, the limiting rod 101 does not disengage from the sliding shaft 103, so as to ensure that when the connector is not in use, the plug 100 and the socket 204 are in a non-inserted state. When in use, another pulling force is applied to the limiting rod 101. Preferably, at this time, the pulling force is 360 ± 10 N. The limiting rod 101 quickly disengages from the sliding shaft 103 under the action of the pulling force. Since the elastic restoring force of the compression spring 105 is greater than the frictional force between the first sealing ring 104 and the stepped through hole, the pin assembly moves closer to the socket assembly under the action of the elastic restoring force of the compression spring 105, and the pin 111 is inserted into the corresponding socket 204. At this time, the head mounting plate 110 and the seat mounting plate 202 are in contact. A pull ring is provided on the limiting rod 101, and the pulling of the limiting rod 101 can be completed by a cylinder.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An underwater connector, characterized in that: Includes socket, plug and socket; The plug comprises a head shell, a stepped through hole is installed in the head shell, a pin assembly is installed in the large hole of the stepped through hole, a sliding shaft is slidably installed in the small hole of the stepped through hole, a plurality of first sealing rings are sleeved on the sliding shaft, the first sealing rings are located in the small hole of the stepped through hole, the front end of the sliding shaft protrudes out of the small hole of the stepped through hole, and a limiting rod is radially penetrated through the protruding end of the sliding shaft, an annular groove is provided on the step surface of the stepped through hole, a compression spring is sleeved in the annular groove, the rear end of the sliding shaft is connected to the pin assembly, the bottom of the compression spring presses on the pin assembly, and the elastic restoring force applied by the compression spring to the pin assembly is greater than the friction force between the first sealing ring and the small hole of the stepped through hole; The socket comprises a seat housing, the seat housing is mounted in the rear end inner cavity of the sleeve, and a jack assembly is mounted in the seat housing; The rear end of the head shell is provided with an external thread, and the sleeve is provided with an internal thread. The sleeve and the head shell are locked by threads, and the rear end face of the head shell abuts against the front end face of the seat shell. There is a sliding gap between the pin assembly and the jack assembly, and the pin assembly is located in front of the jack assembly.

2. An underwater connector according to claim 1, characterized in that: The pin assembly includes a pressure plate, an insulating sheet and a head mounting plate which are connected in sequence from front to back, and the pressure plate, the insulating sheet and the head mounting plate are locked by locking screws. A plurality of pins are installed in the head mounting plate, the sliding shaft is connected to the pressure plate, and the compression spring is in contact with the pressure plate.

3. An underwater connector according to claim 2, characterized in that: A groove is provided at the rear end of the pressure plate, a through hole is provided at the bottom of the groove, a limit head matching the groove is provided at the rear end of the sliding shaft, the limit head is installed in the groove, and the front end of the sliding shaft passes through the through hole.

4. An underwater connector according to claim 3, characterized in that: A rotation-stopping notch is provided at the rear end of the head shell, and a rotation-stopping slider matching the rotation-stopping notch is radially arranged on the head mounting plate, and the rotation-stopping slider is slidably installed in the rotation-stopping notch.

5. An underwater connector according to claim 4, characterized in that: The jack assembly includes a seat mounting plate, a jack and a rear mounting plate, the seat mounting plate and the rear mounting plate are both mounted in the seat shell, the seat mounting plate is mounted with a jack corresponding to the pin, and the jack extends rearward and passes through the rear mounting plate, an annular groove is provided in the rear end inner cavity of the sleeve, a clamping ring is installed in the annular groove, the clamping ring abuts against the head mounting plate, and the head mounting plate abuts against the seat mounting plate, a step surface is provided in the head shell, and an abutting surface abutting against the step surface is provided on the head mounting plate.

6. An underwater connector according to claim 5, characterized in that: The rear end surface of the sleeve is provided with a radially inward convex ring, and the seat housing abuts against the front end surface of the convex ring.

7. An underwater connector according to claim 5, characterized in that: A plurality of locking screw holes are radially opened on the outer circumference of the sleeve, and fastening screws are installed in the locking screw holes.

8. An underwater connector according to claim 5, characterized in that: The rear mounting plate and the seat mounting plate are bonded and connected.

9. An underwater connector according to any one of claims 1 to 8, characterized in that: An annular sealing groove is provided on the outer side wall of the front end portion of the head shell, and a second sealing ring is installed in the sealing groove.

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