A socket structure and underwater sealed connector

Abstract

The present invention discloses a jack structure and an underwater sealing connector. The jack structure includes an active push rod, a spring, a jack body 1, a jack body 2 and a jack body 3 that are axially connected and matched. The front end of the jack body 3 is slidably sealed with the active push rod through an oil bag. The jack body 2 is fixed with a guide rod extending from the front end of the jack body 1. The spring includes a spring 1 located between the active push rod and the jack body 1, a spring 3 located between the jack body 1 and the jack body 2, and a spring 2 sleeved on the front end of the jack body 1. A spring cap is provided on the outer sleeve of the spring 2. A locking ball for controlling the jack body 1 to retreat relative to the guide rod in time is provided between the spring cap, the jack body 1 and the guide rod. The underwater sealing connector adopts the jack structure. The present invention adopts a combined jack body and a spring group assembled therewith, which can not only effectively meet the high life and reliability requirements of the jack structure, but also flexibly adjust the range of the spring insertion force.

Description

Technical Field

[0001] The invention relates to the technical field of connectors, in particular to a socket structure and an underwater sealed connector. Background Art

[0002] At present, there are many types of wet-pluggable underwater sealed electrical connectors with a wide range of applications. They are widely used in defense, industry, aquaculture and other fields. Compared with other connectors, the main difference of wet-pluggable underwater sealed electrical connectors is that they need to perform continuous insertion and unplugging underwater. They are key components in large-scale deep-sea engineering construction such as seabed observation networks, seabed oil and gas extraction, ocean exploration and communication networks. Their performance directly determines the performance, service life and reliability of engineering facilities.

[0003] The insertion and removal of wet-plug underwater sealed electrical connectors are realized by the spring in the socket structure. When the spring length is extended and under long-term load, it is easy to cause spring fatigue. Due to the unique structure of wet-plug underwater sealed electrical connectors, the spring in the socket structure cannot be disassembled and replaced. In order to increase the service life of the spring in the socket structure, ordinary springs and double spring structures cannot meet the high life and high reliability requirements of the product, and the insertion force range of the spring cannot be flexibly adjusted during the design and assembly process.

[0004] Therefore, how to improve the life and reliability of the connector's jack structure is a technical problem that needs to be solved urgently.

[0005] It should be particularly noted that the above technical information is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as admitting or implying in any form that the above technical information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0006] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a socket structure and an underwater sealed connector to solve the technical problems of short life and poor reliability of the socket structure of the underwater sealed connector.

[0007] The technical solution of this application is:

[0008] A socket structure, comprising an active push rod axially connected, a spring, and a socket body connected to an oil bag, wherein the socket body comprises a socket body 1, a socket body 2 and a socket body 3, wherein the socket body 3 is slidably sleeved outside the active push rod, the socket body 1 and the socket body 2, and the front end of the socket body 3 is slidably sealed with the active push rod through the oil bag, and a guide rod is fixed in the socket body 2, and the front end of the guide rod extends from the front end of the socket body 1; the spring comprises a spring 1 located between the active push rod and the socket body 1, a spring 3 located between the socket body 1 and the socket body 2, and the spring also comprises a spring sleeved on Spring 2 is at the front end of the jack body 1, and a spring cap is arranged on the outer sleeve of the spring 2. A retaining spring for preventing the spring cap from falling out forward is arranged at the front end of the jack body 1. The spring 2 provides a forward thrust for the spring cap. A locking ball that can move radially is embedded on the jack body 1. The end of the locking ball facing the guide rod is placed in a clearance groove 1 provided on the guide rod to limit the retreat of the jack body 1 relative to the guide rod. A clearance groove 2 is arranged on the inner wall of the spring cap. When the spring cap moves backward due to the thrust of the movable push rod and makes the clearance groove 2 radially align with the locking ball, the locking ball can enter the clearance groove 2 to release the relative axial locking between the jack body 1 and the guide rod.

[0009] The technical solution redesigns the traditional jack structure, adopts a combined jack body and a spring group assembled therewith, and changes the original situation where a long spring is under maximum load for a long time. In the technical solution, in the initial state, the locking ball locks the jack body 1 on the guide rod through the spring cap, and the spring 3 is isolated between the jack body 1 and the jack body 2; in the process of the movable push rod moving backward, the movable push rod first compresses the spring 1 until the movable push rod contacts the spring cap, and then the spring cap moves backward synchronously with the movable push rod to compress the spring 2, until the clearance groove 2 on the spring cap reaches the position of the locking ball, then the locking ball disengages from the clearance groove 1 and enters the clearance groove 2, then the locking state between the jack body 1 and the guide rod is released, the jack body 1 compresses the spring 3 and moves backward along the guide rod, and at the same time, the jack body 1 drives the jack body 3 to move synchronously until the jack body 1 is in axial contact with the jack body 2. That is, the jack body 1 and the jack body 3 are in different positions in different time domains, and the spring 1, spring 2 and spring 3 are in different load states in different time domains and space domains. Therefore, this technical solution can not only improve the life of the spring in the jack structure, thereby ensuring the service life of the jack structure and the service life of the entire connector, but also can flexibly adjust the spring insertion force range in the jack structure by means of the combination relationship between the movable push rod, spring 1, spring cap, spring 2, jack body 1, spring 3, jack body 2 and jack body 3. At the same time, the jack body 3 can not only guide the movable push rod, spring 1, spring 3 and the jack body together, but also can realize the automatic correction and centering between the jack body 1, jack body 2, jack body 3 and the movable push rod under the action of spring 1, spring 2 and spring 3 through the design of the assembly margin.

[0010] On the basis of the above technical scheme, as a preferred technical scheme for the socket structure, the rear end of the socket body three is in a stop-matched state with the rear end of the socket body one in the direction of spring compression, and the front end of the socket body three is in a stop-matched state with the rear end of the movable push rod in the direction of spring extension. This technical scheme provides a preferred stop-matching structure for realizing the follow-up action of the socket body three. That is, in the initial state, due to the supporting effect of the spring one, the socket body one and the socket body three are in a stop-matched state in the direction of spring compression. When the locking state between the socket body one and the guide rod is released, the movable push rod presses the socket body one to move toward the socket body two through the spring one, the spring cap, and the spring two, and the socket body three moves toward the socket body two along with the socket body one. When the movable push rod is reset, that is, when the movable push rod moves in the opposite direction, the socket body three is reset along with the movable push rod. Specifically, the socket body one slides relative to the socket body two and the socket body three under the action of the spring three, and the movable push rod slides relative to the socket body one under the action of the spring two. When the movable push rod moves to a position that cooperates with the socket body three stopper, the movable push rod drives the socket body three to slide relative to the socket body one and the socket body two.

[0011] On the basis of the above technical scheme, as the preferred technical scheme of the jack structure, mutually adapted guide structures are arranged between the movable push rod and the jack body three, between the movable push rod and the spring cap, between the jack body three and the jack body two, and between the guide rod and the jack body one. In this technical scheme, since the jack body two is a fixed structural member in the jack structure, and the jack body one, the jack body three, the movable push rod, the spring cap and each spring are movable parts, in order to eliminate the error caused by the clearance fit of adjacent movable parts and thus ensure the reliability of the movement of the movable push rod, the jack body two can be used as a position reference. Then the jack body three is accurately positioned through the guide structure between the jack body two, the movable push rod is accurately positioned through the guide structure between the jack body three, the spring cap is accurately positioned through the guide structure between the movable push rod, and the jack body one is accurately positioned through the spring cap; at the same time, since the guide rod is relatively fixed to the jack body two, the jack body one can also slide with the guide rod through its through hole to achieve more accurate positioning. That is, the external guide is realized by the guide structure between the jack body 2 and the jack body 3, and between the jack body 3 and the jack body 1, and the internal guide is realized by the guide rod and the through hole of the jack body 1, and the guide structure between the spring cap on the jack body 1 and the movable push rod, and there is a guide structure between the movable push rod and the jack body 3, so that the external guide and the internal guide are interrelated. Through the mutual combination of the external guide and the internal guide, more assembly and action margin designs can be provided, and the processing accuracy and assembly accuracy of the parts can be further reduced. At the same time, during the axial movement of the movable push rod, the assembly accuracy between the movable push rod, the jack body 1, and the jack body 2 is guaranteed.

[0012] On the basis of the above technical scheme, as an optimal technical scheme for the socket structure, the guide structure between the movable push rod and the socket body three is a guide hole one at the front end of the socket body three and the front end of the movable push rod; the guide structure between the movable push rod and the spring cap includes a conical surface one and a conical surface two that match each other, the conical surface one is an inner concave surface arranged at the rear end of the movable push rod, and the conical surface two is an outer convex surface arranged at the front end of the spring cap; the guide structure between the socket body three and the socket body two is a first seal at the rear end of the socket body three and the front end of the socket body two, and the socket body three is slidably sealed with the socket body two through the first seal.

[0013] On the basis of the above technical solution, as a preferred technical solution for the socket structure, mutually matching plug-in structures are provided between the movable push rod and the socket body 1, between the movable push rod and the guide rod, and between the socket body 1 and the socket body 2. The plug-in structure in this embodiment can not only provide action space for the guide structure in the above technical solution, enhance the integrity between the movable push rod and the socket body 1, and between the socket body 1 and the socket body 2, but also can be used in conjunction with the guide structure in the above technical solution to enhance the guiding and centering effects, and at the same time provide installation space for each spring, thereby reducing the length of the entire socket structure.

[0014] On the basis of the above technical scheme, as a preferred technical scheme for the socket structure, the insertion structure between the movable push rod and the socket body one is the guide hole four at the rear end of the movable push rod and the front end of the socket body one, the insertion structure between the movable push rod and the guide rod is the guide hole three at the rear end of the movable push rod and the front end of the guide rod, and the insertion structure between the socket body one and the socket body two is the guide hole six at the rear end of the socket body one and the front end of the socket body two.

[0015] On the basis of the above technical solution, as a preferred technical solution for the jack structure, the conical surface 1 of the movable push rod is coaxially arranged with the guide hole 3 and the guide hole 4.

[0016] On the basis of the above technical solution, as a preferred technical solution for the socket structure, a first wire spring hole is provided between the front end of the socket body three and the movable push rod, the first wire spring hole is used for the electrical connection between the pin of the adapter connector and the socket structure, and a second wire spring hole is provided between the rear end of the socket body one and the front end of the socket body two, the second wire spring hole is used for elastic contact conduction between the socket body one and the socket body two.

[0017] On the basis of the above technical scheme, as a preferred technical scheme for the socket structure, one end of the spring one is butted against the end face of the movable push rod, and the other end is butted against the step face of the outer periphery of the socket body one; one end of the spring three is butted against the step face of the inner cavity of the socket body one, and the other end is butted against the step face of the inner cavity of the socket body two. This technical scheme provides a preferred arrangement of spring one and spring three. Through the structural design of the butted end face and the butted step face, not only can the spring one and spring three be positioned stably, but also the space utilization rate can be effectively improved. Without increasing the structural size, the connector with a small overall size and the socket structure with a small size can be arranged with more springs and guide structures. At the same time, each spring is supported on the corresponding step face, so that the spring itself also has a guide function, further improving the guide centering effect.

[0018] An underwater sealed connector comprises a connector housing and a socket structure arranged in the connector housing, wherein the socket structure is the socket structure described in any of the above technical solutions, and a port seal adapted to a movable push rod is arranged at the insertion port of the connector housing.

[0019] Compared with the prior art, the beneficial effects of the present invention include:

[0020] The present invention redesigns the traditional jack structure, adopts a combined jack body and a spring group assembled therewith, forms a multi-stage linkage jack structure, and changes the original situation where a long spring is under maximum load for a long time. The present invention can not only effectively meet the high life and reliability requirements of the jack structure, but also flexibly adjust the range of spring insertion force. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0022] Figure 1 is a cross-sectional view of a conventional jack structure;

[0023] Figure 2 A cross-sectional view of the jack structure provided by the present invention;

[0024] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0025] Figure 4 A cross-sectional view of the underwater sealed connector provided by the present invention during sealing pressure measurement.

[0026] Description of Figure Numbers:

[0027] 100-conventional movable ejector rod; 200-conventional spring; 300-conventional socket body;

[0028] 1-movable ejector rod, 1-1-cone surface 1; 2-spring 1; 3-spring 2; 4-spring cap, 4-1-cone surface 2; 5-spring 3; 6-jack body 1, 6-1-through hole; 7-jack body 2; 8-jack body 3; 9-guide rod; 10-connector housing;

[0029] 11-guide hole one; 12-guide hole two; 13-guide hole three; 14-guide hole four; 15-guide hole five; 16-guide hole six; 17-guide hole seven;

[0030] 21- step surface one; 22- step surface two; 23- step surface three; 24- step surface four; 25- step surface five; 26- step surface six;

[0031] 30-port seal; 31-oil bag; 32-first seal; 33-first wire spring hole; 34-second wire spring hole; 35-circlip; 36-lock ball; 37-gap groove one; 38-gap groove two. DETAILED DESCRIPTION

[0032] 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 core concept of the present invention and the following embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The present application provides these embodiments to make the present application thorough and complete, and to fully express the scope of the present application to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0034] It should be noted that, in the description of this application, unless otherwise specified, the meaning of "several" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", "axial", "radial" and the like indicate positions or positional relationships only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0035] In addition, the words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0036] It should also be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0037] All terms used in this application have the same meaning as those understood by those of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0038] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the corresponding technologies, methods, and equipment should be considered part of the specification.

[0039] like Figure 1 As shown, it is a conventional jack structure, including a conventional movable push rod 100, a conventional spring 200 and a conventional jack body 300. The conventional jack body 300 has an inner cavity, the conventional spring 200 is arranged in the inner cavity and the two ends are respectively against the conventional movable push rod 100 and the conventional spring 200, and one end of the conventional movable push rod 100 is slidably matched with the inner cavity. In order to meet the use requirements, when the length of the conventional spring 200 is lengthened and under long-term load, it is not only easy to cause fatigue of the conventional spring 200, but also the conventional spring 200 cannot be disassembled and replaced, and the insertion force range of the spring cannot be flexibly adjusted during the design and assembly process.

[0040] like Figure 2 As shown, in order to solve the above problems, the present invention provides a socket structure, including an axially-jointed movable ejector rod 1, a spring, and a socket body connected to an oil bag 31.

[0041] The socket body comprises a socket body 1 6, a socket body 2 7 and a socket body 3 8, and the socket body 3 8 is slidably sleeved outside the movable push rod 1, the socket body 1 6 and the socket body 2 7. The socket body 1 6 is respectively slidably plugged with the socket body 2 7 and the socket body 3 8, and the socket body 3 8 is respectively slidably plugged with the socket body 1 6 and the socket body 2 7, the front end of the socket body 3 8 is slidably sealed with the movable push rod 1 through the oil bag 31, and the rear end of the socket body 3 8 is slidably sealed with the socket body 2 7 through the first sealing member 32.

[0042] A guide rod 9 is fixedly provided in the socket body 2 7 , and the front end of the guide rod 9 extends from the front end of the socket body 1 6 . The rear end of the movable push rod 1 is provided with a clearance hole adapted to the guide rod 9 so that the movable push rod 1 can move backward relative to the guide rod 9 .

[0043] The spring includes a spring 1 2 located between the movable push rod 1 and the socket body 1 6, and a spring 3 5 located between the socket body 1 6 and the socket body 2 7. The spring also includes a spring 2 3 sleeved on the front end of the socket body 1 6, a spring cap 4 is provided on the outer sleeve of the spring 2 3, and a retaining spring 35 is provided at the front end of the socket body 1 6 to prevent the spring cap 4 from coming out forward, and the spring 2 3 provides a forward thrust for the spring cap 4.

[0044] A locking ball 36 that can move radially is embedded on the jack body 6, and the end of the locking ball 36 facing the guide rod 9 is placed in a giving way groove 37 provided on the guide rod 9 to limit the jack body 6 from retreating relative to the guide rod 9. A giving way groove 2 38 is provided on the inner wall of the spring cap 4. When the spring cap 4 is moved backward by the top thrust of the movable push rod 1 and the giving way groove 2 38 is radially aligned with the locking ball 36, the locking ball 36 can enter the giving way groove 2 38 to release the relative axial locking between the jack body 6 and the guide rod 9.

[0045] The technical solution redesigns the traditional jack structure, adopts a combined jack body and a spring group assembled therewith, and changes the original situation where a long spring is under maximum load for a long time. In the technical solution, in the initial state, the lock ball 36 locks the jack body 1 6 on the guide rod 9 through the spring cap 4, and the spring 3 5 is isolated between the jack body 1 6 and the jack body 2 7; during the backward movement of the movable push rod 1, the movable push rod 1 first compresses the spring 1 2 until the movable push rod 1 contacts the spring cap 4, and then the spring cap 4 moves backward synchronously with the movable push rod 1 and compresses the spring 2 3, until the clearance groove 2 38 on the spring cap 4 reaches the position of the lock ball 36, then the lock ball 36 disengages from the clearance groove 1 37 and enters the clearance groove 2 38, then the locking state between the jack body 1 6 and the guide rod 9 is released, the jack body 1 6 compresses the spring 3 5 and moves backward along the guide rod 9, and at the same time, the jack body 1 6 drives the jack body 3 8 to move synchronously until the jack body 1 6 and the jack body 2 7 are in axial contact.

[0046] In this embodiment, the movable push rod 1 first compresses the spring 1 2, until the movable push rod 1 contacts the spring cap 4 on the socket body 1 6, and then the spring 2 3 is compressed by the movable push rod 1 and the socket body 1 6 to the target compression amount, until the locking ball 36 releases the locking of the socket body 1 6 and the guide rod 9. That is, in this embodiment, the spring 1 2, the spring 2 3, the spring 3 5, the movable push rod 1, the socket body 1 6, the socket body 2 7 and the socket body 3 8 form a three-level elastic support, which fully improves the life of the spring in the socket structure, ensures the service life of the socket structure and the service life of the entire connector, and can also more flexibly adjust the range of the spring insertion force.

[0047] That is, the jack body 1 6 and the jack body 3 8 are in different positions in different time domains, and the spring 1 2, spring 2 3 and spring 3 5 are in different load states in different time domains and space domains. Therefore, the technical solution can not only improve the life of the spring in the jack structure, thereby ensuring the service life of the jack structure and the service life of the entire connector, but also can flexibly adjust the spring insertion force range in the jack structure by means of the combination relationship between the movable push rod 1, spring 1 2, spring cap 4, spring 2 3, jack body 1 6, spring 3 5, jack body 2 7, and jack body 3 8. At the same time, the jack body 3 8 can not only guide the movable push rod 1, spring 1 2, spring 3 5 and jack body 1 6, but also realize the automatic correction and centering between the jack body 1 6, jack body 2 7, jack body 3 8 and the movable push rod 1 through the design of the assembly margin under the action of the spring 1 2, spring 2 3 and spring 3 5.

[0048] Preferably, if Figure 3 As shown, a clearance groove 1 37 is provided on the outer periphery of the front end of the guide rod 9, and the lock ball 36 on the spring cap 4 passes through the spring cap 4 and is adapted to the clearance groove 1 37, and the inner wall of the spring cap 4 is provided with a clearance groove 2 38 adapted to the lock ball 36. When the spring cap 4 is not pressed by the movable push rod 1, the lock ball 36 is squeezed in the inner wall of the spring cap 4 and the clearance groove 1 37, and the jack body 1 6 and the guide rod 9 are relatively axially stationary; when the spring cap 4 is pressed by the movable push rod 1 and displaced, the lock ball 36 is separated from the clearance groove 1 37 and the inner wall of the spring cap 4, and enters between the clearance groove 2 38 and the outer wall of the guide rod 9, and the jack body 1 6 can retreat relative to the guide rod 9.

[0049] On the basis of the above technical scheme, as a preferred technical scheme for the socket structure, the rear end of the socket body three 8 and the rear end of the socket body one 6 are stopped and matched in the spring compression direction, and the front end of the socket body three 8 and the rear end of the movable push rod 1 are stopped and matched in the spring extension direction.

[0050] The technical solution provides an optimal stopper matching structure for realizing the follow-up action of the socket body 3. That is, when the movable push rod 1 presses the socket body 1 6 to move, the socket body 3 8 moves with the socket body 1 6 toward the socket body 2 7; Figure 2 In the up and down direction shown, the socket body 1 6 can drive the socket body 3 8 to move from bottom to top, and then the socket body 1 6 and the socket body 3 8 are synchronously close to the socket body 2 7. When the movable push rod 1 is reset, the socket body 3 8 is reset along with the movable push rod 1; that is, Figure 2 In the up and down direction shown, the movable push rod 1 can drive the jack body 3 8 to move from top to bottom, and under the elastic force of the spring, the jack body 3 8 is gradually moved away from the jack body 2 7.

[0051] The specific exercise process is as follows:

[0052] That is, in the initial state, due to the supporting effect of spring 1 2, the jack body 1 6 and the jack body 3 8 are in a state of blocking cooperation in the spring compression direction. When the locking state between the jack body 1 6 and the guide rod 9 is released, the movable push rod 1 presses the jack body 1 6 to move toward the jack body 2 7 through the spring 1 2, the spring cap 4, and the spring 2 3, and the jack body 3 8 moves along with the jack body 1 6 toward the jack body 2 7.

[0053] When the movable push rod 1 is reset, that is, when the movable push rod 1 moves in the opposite direction, the socket body three 8 is reset along with the movable push rod 1. Specifically, the socket body one 6 slides relative to the socket body two 7 and the socket body three 8 under the action of the spring three 5, and the movable push rod 1 slides relative to the socket body one under the action of the spring two 3. When the movable push rod 1 moves to a position where it is stopped and matched with the socket body three 8, the movable push rod 1 drives the socket body three 8 to slide relative to the socket body one 6 and the socket body two 7.

[0054] It should be particularly noted that when the movable push rod 1 moves by pressing the socket body 1 6 through the spring 1 2 and the spring 2 3, the socket body 3 8 directly moves along with the socket body 1 6 toward the socket body 2 7; and when the movable push rod 1 is reset, there is relative movement between the socket body 1 6 and the socket body 3 8, that is, before the movable push rod 1 moves to the position where it stops and cooperates with the socket body 3 8, the socket body 1 6 first slides relative to the socket body 2 7 and the socket body 3 8 under the action of the spring 3 5, and the movable push rod 1 first slides relative to the socket body 2 7 and the socket body 3 8 under the action of the spring 2 3 and the spring 3 5; when the movable push rod 1 moves to the position where it stops and cooperates with the socket body 3 8, the movable push rod 1 drives the socket body 3 8 to slide relative to the socket body 1 6 and the socket body 2 7.

[0055] The follow-up design of the socket body three 8 provided in the present embodiment further enhances the guiding effect on the movable push rod 1, spring one 2, spring three 5 and socket body one 6, while also coupling the assembly margin described in the above embodiment to the follow-up design, that is, not only the movable push rod 1 and the socket body one 6 can actively move relative to the socket body three 8, but also the socket body three 8 can actively move relative to the movable push rod 1, the socket body one 6 and the socket body two 7.

[0056] On the basis of the above technical scheme, as a preferred technical scheme for the socket structure, mutually adaptable guide structures are provided between the movable push rod 1 and the socket body three 8, between the movable push rod 1 and the spring cap 4, between the socket body three 8 and the socket body two 7, and between the guide rod 9 and the socket body one 6.

[0057] In the present technical solution, since the jack body 2 7 is a fixed structural member in the jack structure, and the jack body 1 6, the jack body 3 8, the movable push rod 1, the spring cap 4 and each spring are all movable parts, in order to eliminate the error caused by the clearance fit of adjacent movable parts and thus ensure the reliability of the movement of the movable push rod 1, the jack body 2 7 can be used as a position reference. Then the jack body 3 8 is accurately positioned through the guide structure between the jack body 2 7, the movable push rod 1 is accurately positioned through the guide structure between the jack body 3 8, the spring cap 4 is accurately positioned through the guide structure between the movable push rod 1, and the jack body 1 6 is accurately positioned through the spring cap 4; at the same time, since the guide rod 9 is relatively fixed to the jack body 2 7, the jack body 1 6 can also slide with the guide rod 9 through its through hole 6-1 to achieve more accurate positioning.

[0058] That is, the external guide is realized by the guide structure between the jack body 2 7 and the jack body 3 8, and the jack body 3 8 and the jack body 1 6, and the internal guide is realized by the guide rod 9 and the through hole 6-1 of the jack body 1 6, and the guide structure between the spring cap 4 on the jack body 1 6 and the movable push rod 1, and there is a guide structure between the movable push rod 1 and the jack body 3 8, so that the external guide and the internal guide are interrelated. Through the mutual combination of the external guide and the internal guide, more assembly and action margin designs can be provided, and the processing accuracy and assembly accuracy of the parts can be further reduced. At the same time, during the axial movement of the movable push rod 1, the assembly accuracy between the movable push rod 1, the jack body 1 6, and the jack body 2 7 is guaranteed.

[0059] On the basis of the above technical solution, as a preferred technical solution for the socket structure, the guide structure between the movable push rod 1 and the socket body 3 8 is a guide hole 11 at the front end of the socket body 3 8 and the front end of the movable push rod 1.

[0060] Preferably, if Figure 2 As shown, the front part of the socket body 3 8 is provided with a guide hole 11 that is slidably matched with the small diameter section of the movable push rod 1, and the middle part of the socket body 3 8 is provided with a guide hole 2 12 that is adapted to the large diameter section of the movable push rod 1 and the spring 1 2. When the movable push rod 1 presses the spring 1 2 in the guide hole 2 12 and gradually approaches the socket body 2 7, the small diameter section of the movable push rod 1 is slidably matched with the guide hole 1 11, and the large diameter section of the movable push rod 1 is gap matched with the guide hole 2 12. When the movable push rod 1 moves in the opposite direction to the guide hole 1 11, the small diameter section of the movable push rod 1 is slidably matched with the guide hole 1 11, and the large diameter section of the movable push rod 1 is gap matched with the guide hole 2 12.

[0061] like Figure 3 As shown, the guide structure between the movable push rod 1 and the spring cap 4 includes a conical surface 1-1 and a conical surface 2-1 that are adapted to each other, the conical surface 1-1 is an inner concave surface provided at the rear end of the movable push rod 1, and the conical surface 2-1 is an outer convex surface provided at the front end of the spring cap 4. When the movable push rod 1 compresses the spring 1-2 until it contacts the spring cap 4, the conical surface 1-1 will automatically cover the conical surface 2-1, thereby achieving precise docking between the movable push rod 1 and the spring cap 4.

[0062] Preferably, if Figure 2 As shown, the guide structure between the jack body three 8 and the jack body two 7 is the first sealing member 32 at the rear end of the jack body three 8 and the front end of the jack body two 7, and the jack body three 8 is slidably sealed with the jack body two 7 through the first sealing member 32.

[0063] On the basis of the above technical solution, as a preferred technical solution for the socket structure, mutually matching plug-in structures are provided between the movable push rod 1 and the socket body 1 6, between the movable push rod 1 and the guide rod 9, and between the socket body 1 6 and the socket body 2 7. The plug-in structure in this embodiment can not only provide action space for the guide structure in the above technical solution, enhance the integrity between the movable push rod 1 and the socket body 1 6, and between the socket body 1 6 and the socket body 2 7, but also can be used in conjunction with the guide structure in the above technical solution to enhance the guiding and centering effects, and at the same time provide installation space for each spring, thereby reducing the length of the entire socket structure.

[0064] On the basis of the above technical solution, as a preferred technical solution of the socket structure, the insertion structure between the movable push rod 1 and the socket body 6 is the guide hole 414 at the rear end of the movable push rod 1 and the front end of the socket body 6. Preferably, in the axial direction, the guide hole 414 is coaxial with the socket body 6; in the radial direction, the diameter of the guide hole 414 is larger than the diameter of the front end of the socket body 6, that is, when the front end of the socket body 6 is inserted into the guide hole 414, the two are clearance-matched in the radial direction.

[0065] The insertion structure between the movable push rod 1 and the guide rod 9 is the guide hole 3 13 at the rear end of the movable push rod 1 and the front end of the guide rod 9. Preferably, in the axial direction, the guide hole 3 13 is coaxial with the guide rod 9; in the radial direction, the diameter of the guide hole 3 13 is larger than the diameter of the guide rod 9, that is, when the front end of the guide rod 9 is inserted into the guide hole 3 13, the two are clearance-matched in the radial direction.

[0066] The insertion structure between the jack body 1 6 and the jack body 2 7 is a guide hole 6 16 at the rear end of the jack body 1 6 and a front end of the jack body 2 7. The front end of the jack body 2 7 is always slidably plugged into the guide hole 6 16 of the jack body 1 6.

[0067] On the basis of the above technical solution, as a preferred technical solution of the socket structure, the conical surface 1-1 of the movable push rod 1 is coaxially arranged with the guide hole 3 13 and the guide hole 4 14.

[0068] On the basis of the above technical scheme, as a preferred technical scheme for the socket structure, a first wire spring hole 33 is provided between the front end of the socket body three 8 and the movable push rod 1, and the first wire spring hole 33 is used for the electrical connection between the pin of the adapter connector and the socket structure, and a second wire spring hole 34 is provided between the rear end of the socket body one 6 and the front end of the socket body two 7, and the second wire spring hole 34 is used for elastic contact conduction between the socket body one 6 and the socket body two 7.

[0069] Preferably, the first wire spring hole 33 is located between the guide hole 11 and the guide hole 2 12 in the above technical solution; the second wire spring hole 34 is located on the outer peripheral surface of the front end portion of the jack body 2 7, and the second wire spring hole 34 is adapted to the guide hole 6 16 of the jack body 1 6 in the above technical solution, that is, the outer peripheral surface of the second wire spring hole 34 is in elastic contact with the inner wall of the guide hole 6 16.

[0070] On the basis of the above technical scheme, as a preferred technical scheme for the socket structure, one end of the spring 1 2 is abutted against the end face of the movable push rod 1, and the other end is abutted against the step surface of the outer periphery of the socket body 1 6; one end of the spring 3 5 is abutted against the step surface of the inner cavity of the socket body 1 6, and the other end is abutted against the step surface of the inner cavity of the socket body 2 7.

[0071] The present technical solution provides a preferred arrangement of spring one 2 and spring three 5. Through the structural design of end face top connection and step surface top connection, not only can spring one 2 and spring three 5 be stably positioned, but also the space utilization rate can be effectively improved. Without increasing the structural size, the connector with an overall small size and a smaller jack structure can be equipped with more springs and guide structures. At the same time, each spring is supported on the corresponding step surface, so that the spring itself also has a guiding function, further improving the guiding centering effect.

[0072] Preferably, a guide hole five 15 is provided at one end of the socket body one 6 facing the socket body two 7, and a guide hole seven 17 is provided at one end of the socket body two 7 facing the socket body one 6, and both ends of the spring three 5 are respectively located in the guide hole five 15 and the guide hole seven 17.

[0073] Preferably, a step surface 21 is provided on one end of the socket body 6 facing the movable push rod 1 , one end of the spring 2 3 is connected to the step surface 21 , and the other end of the spring 2 3 is used to abut the movable push rod 1 .

[0074] Preferably, if Figure 3 As shown, a step surface 22 is provided at one end of the socket body 6 facing the movable push rod 1. When the spring 23 is not loaded, the step surface 22 is axially spaced relative to the spring cap 4. When the load of the spring 23 gradually increases, the spring cap 4 gradually approaches the step surface 22 and presses the socket body 6 to move toward the socket body 27 through the step surface 22.

[0075] Preferably, a step surface three 23 is provided on one end of the socket body one 6 facing the movable push rod 1, and the two ends of the spring one 2 are respectively connected to the step surface three 23 and the end surface of the movable push rod 1.

[0076] Preferably, the step surface 1 21 , the step surface 22 , and the step surface 3 23 are three step surfaces of the jack body 1 6 toward one end of the movable push rod 1 , and the diameters of the step surface 1 21 , the step surface 22 , and the step surface 3 23 increase sequentially.

[0077] Preferably, a step surface four 24 is provided at one end of the socket body one 6 facing the socket body two 7, and a step surface six 26 is provided at one end of the socket body two 7 facing the socket body one 6, and both ends of the spring three 5 are respectively in contact with the step surface four 24 and the step surface six 26.

[0078] Preferably, the guide hole three 13 and the guide hole four 14 are stepped holes in the movable push rod 1 , and the diameter of the guide hole four 14 is larger than the diameter of the guide hole three 13 .

[0079] Preferably, the through hole 6-1, the guide hole five 15, and the guide hole six 16 are stepped holes in the jack body one, and the diameters of the through hole 6-1, the guide hole five 15, and the guide hole six 16 increase sequentially.

[0080] Preferably, the diameter of the guide hole three 13 is larger than the diameter of the through hole 6 - 1 and smaller than the diameter of the guide hole five 15 , and the diameter of the guide hole four 14 is larger than the diameter of the guide hole five 15 .

[0081] Preferably, the diameter of the guide hole seven 17 is larger than the diameter of the guide hole five 15 and smaller than the diameter of the guide hole six 16.

[0082] Preferably, the step surface four 24 is the structural surface between the through hole 6-1 and the guide hole five 15, the step surface five 25 is the structural surface between the guide hole five 15 and the guide hole six 16, and the step surface six 26 is the structural surface between the guide hole seven 17 and the mounting hole of the guide rod 9.

[0083] Preferably, the spiral diameters of the spring 1 2 , the spring 2 3 , and the spring 3 5 decrease sequentially.

[0084] Preferably, the lengths of spring two 3, spring one 2, and spring three 5 increase sequentially.

[0085] An underwater sealed connector includes a connector housing 10 and a socket structure arranged in the connector housing 10, wherein the socket structure is the socket structure described in any of the above technical solutions, and a port seal 30 adapted to a movable push rod 1 is arranged at the insertion port of the connector housing 10.

[0086] like Figure 4 As shown, an embodiment of an underwater sealed connector includes a connector housing 10 and a socket structure arranged in the connector housing 10, wherein the socket structure is the socket structure described in any of the above embodiments, and a port seal 30 adapted to the movable push rod 1 is arranged at the insertion port of the connector housing 10, and the socket structure is located in a cavity behind the port seal 30.

[0087] Since the socket structure in the underwater sealed connector is different from the conventional socket structure, the oil bag 31 will undergo axial displacement with the socket body 38. Therefore, a port seal 30 is provided at the insertion port of the connector housing 10, which is adapted to the movable push rod 1 and the pin in the adapter connector to play the role of end sealing.

[0088] In addition, it should be noted that:

[0089] Active ejector pin 1: As an important component of the socket structure, during the plugging process, the plug pin of the adapter connector pushes against the active ejector pin 1 to perform the insertion action.

[0090] Spring 1-2: When the pin is inserted into the connector, the movable ejector pin 1 compresses the spring 1-2, and the spring 1-2 provides a certain insertion force.

[0091] Spring 2 3: When the pin is inserted into the connector, when the movable push rod 1 contacts the spring cap 4, the movable push rod 1 pushes the spring cap 4 to move axially and compresses the spring 2 3 at the same time.

[0092] Spring cap 4: When the movable push rod 1 runs a certain distance, the movable push rod 1 contacts the spring cap 4, and the tail of the movable push rod 1 presses against the spring cap 4 to compress the spring three 5, pushing the socket body one 6 to move backward and continue to insert.

[0093] Spring three 5: plays the role of supporting the jack body one 6 and providing a certain insertion force.

[0094] The jack body 1 6, the jack body 2 7 and the jack body 3 8 all play a role in flow passage.

[0095] The application of the underwater sealing connector includes the following processes:

[0096] 1. The pin of the adapter connector presses against the movable push rod 1 to perform the insertion action inward, and the movable push rod 1 compresses the spring 2 and moves toward the socket body 6;

[0097] 2. When the movable push rod 1 pushes the spring cap 4, the movable push rod 1 pushes the spring cap 4 to move backward, the spring 2 3 is compressed, and the locking ball 36 moves from the clearance groove 1 37 to the clearance groove 2 38 to release the axial locking relationship between the jack body 1 6 and the guide rod 9, so that the jack body 1 6 and the guide rod 9 can slide relative to each other in the axial direction;

[0098] 3. When the spring cap 4 moves to axially contact with the socket body 1 6, the axial locking of the socket body 1 6 and the guide rod 9 has been released, so the socket body 1 6 can retreat, and the socket body 1 6 and the spring 3 5 are pushed to move toward the socket body 2 7 at the same time, and the socket body 1 6 drives the socket body 3 8 to move backward synchronously relative to the socket body 2 7;

[0099] 4. When the socket body 1 6 moves to axially contact with the socket body 2 7, the movement stops, the insertion action of the pin of the adapter connector is completed, and the underwater sealing connector can work through flow.

[0100] 5. When the pin of the adapter connector is pulled out, spring three 5, spring two 3, and spring one 2 provide ejection force for the movable ejector rod 1 and the socket body one 6 to eject, and the ejection process is opposite to the above process.

[0101] The underwater sealed connector provided by the present invention can be used in a gaseous medium environment, a liquid medium environment, a supercritical medium environment, or a mixed medium environment. It should be noted that the gaseous medium environment, liquid medium environment, and supercritical medium environment described in this embodiment are not absolutely pure medium environments relative to mixed medium environments, but are environments dominated by one medium, such as pure environments such as liquid water, liquid oil, inert gas, and active gas doped with pollutants. Of course, it can also be an environment in which multiple states of one medium exist, such as ice water with ice slag, etc. It can also be an environment in which multiple media are mixed, and naturally it can also be an environment in which multiple media exist in different physical states.

[0102] The details not described in detail in the present invention are all conventional technical means known to those skilled in the art.

[0103] The above content shows and describes the basic principles, main features and beneficial effects of the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A socket structure, comprising an axially engaged movable ejector rod (1), a spring, and a socket body connected to an oil bag (31), characterized in that: The socket body comprises a socket body 1 (6), a socket body 2 (7) and a socket body 3 (8); the socket body 3 (8) is slidably sleeved outside the movable push rod (1), the socket body 1 (6) and the socket body 2 (7); the front end of the socket body 3 (8) is slidably sealed with the movable push rod (1) through an oil bag (31); a guide rod (9) is fixedly provided in the socket body 2 (7); the front end of the guide rod (9) extends from the front end of the socket body 1 (6); the spring comprises a spring 1 (2) located between the movable push rod (1) and the socket body 1 (6); and a spring 3 (5) located between the socket body 1 (6) and the socket body 2 (7); the spring further comprises a spring 2 (3) sleeved on the front end of the socket body 1 (6); the outer cover of the spring 2 (3) is provided with a spring cap ( 4, a retaining spring (35) for preventing the spring cap (4) from falling out forward is provided at the front end of the jack body (6), the spring (3) provides a forward thrust for the spring cap (4), a locking ball (36) capable of moving in the radial direction is embedded in the jack body (6), the end of the locking ball (36) facing the guide rod (9) is placed in a clearance groove (37) provided on the guide rod (9) to limit the retreat of the jack body (6) relative to the guide rod (9), and a clearance groove (38) is provided on the inner wall of the spring cap (4), when the spring cap (4) is moved backward by the thrust of the movable push rod (1) and the clearance groove (38) is radially aligned with the locking ball (36), the locking ball (36) can enter the clearance groove (38) to release the relative axial locking between the jack body (6) and the guide rod (9).

2. The jack structure according to claim 1, characterized in that: The rear end of the socket body three (8) is stop-fitted with the rear end of the socket body one (6) in the direction of spring compression, and the front end of the socket body three (8) is stop-fitted with the rear end of the movable push rod (1) in the direction of spring extension.

3. The jack structure according to claim 1 or 2, characterized in that: Mutually adaptable guide structures are provided between the movable push rod (1) and the third socket body (8), between the movable push rod (1) and the spring cap (4), between the third socket body (8) and the second socket body (7), and between the guide rod (9) and the first socket body (6).

4. The jack structure according to claim 3, characterized in that: The guide structure between the movable push rod (1) and the socket body (3) (8) is a guide hole (11) at the front end of the socket body (3) (8) and the front end of the movable push rod (1); the guide structure between the movable push rod (1) and the spring cap (4) comprises a conical surface (1-1) and a conical surface (4-1) which are adapted to each other, the conical surface (1-1) being an inner concave surface arranged at the rear end of the movable push rod (1), and the conical surface (4-1) being an outer convex surface arranged at the front end of the spring cap (4); the guide structure between the socket body (3) (8) and the socket body (2) (7) is a first sealing member (32) at the rear end of the socket body (3) (8) and the front end of the socket body (2) (7), and the socket body (3) (8) is slidably sealed with the socket body (2) (7) through the first sealing member (32).

5. The jack structure according to claim 4, characterized in that: Mutually matching plug-in structures are provided between the movable push rod (1) and the first socket body (6), between the movable push rod (1) and the guide rod (9), and between the first socket body (6) and the second socket body (7).

6. The jack structure according to claim 5, characterized in that: The plug-in structure between the movable push rod (1) and the socket body one (6) is the guide hole four (14) at the rear end of the movable push rod (1) and the front end of the socket body one (6), the plug-in structure between the movable push rod (1) and the guide rod (9) is the guide hole three (13) at the rear end of the movable push rod (1) and the front end of the guide rod (9), and the plug-in structure between the socket body one (6) and the socket body two (7) is the guide hole six (16) at the rear end of the socket body one (6) and the front end of the socket body two (7).

7. The jack structure according to claim 6, characterized in that: The conical surface one (1-1) of the movable push rod (1) is coaxially arranged with the guide hole three (13) and the guide hole four (14).

8. The jack structure according to any one of claims 1-2, 4-7, characterized in that: A first wire spring hole (33) is provided between the front end of the third jack body (8) and the movable push rod (1), and the first wire spring hole (33) is used for electrical connection between the plug pin of the adapter connector and the jack structure. A second wire spring hole (34) is provided between the rear end of the first jack body (6) and the front end of the second jack body (7), and the second wire spring hole (34) is used for elastic contact conduction between the first jack body (6) and the second jack body (7).

9. The jack structure according to claim 8, characterized in that: One end of the spring one (2) is in contact with the end surface of the movable push rod (1), and the other end is in contact with the step surface on the outer periphery of the socket body one (6); one end of the spring three (5) is in contact with the step surface of the inner cavity of the socket body one (6), and the other end is in contact with the step surface of the inner cavity of the socket body two (7).

10. An underwater sealed connector, comprising a connector housing (10) and a socket structure arranged in the connector housing (10), characterized in that: The socket structure is the socket structure according to any one of claims 1 to 9, and a port seal (30) adapted to the movable ejector rod (1) is provided at the insertion port of the connector housing (10).

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