Dynamic sealing type anti-winding cable connecting device for water area cleaning machine

Abstract

The invention discloses a dynamic sealing type anti-winding cable connecting device for a water area cleaning machine. The dynamic sealing type anti-winding cable connecting device comprises a plug unit and a socket unit, the plug unit includes: a composite housing structure; a first coil; the bottom sealing cavity is filled and sealed by the first sealing body; the socket unit includes: a cylindrical housing; a second coil; the second sealing body is used for filling and sealing the cylindrical cavity; a connecting sleeve; the radial bulge and the limiting groove form a rotating pair so as to rotate relatively; no direct electric connection element exists between the plug unit and the socket unit, the contact portion of the radial protrusion and the limiting groove allows existence and circulation of a water medium, and an alternating magnetic field penetrates through the first sealing body and the second sealing body to achieve energy transmission. The invention provides the pluggable, winding-resistant, corrosion-resistant and maintenance-free characteristics, and is particularly suitable for long-term high-frequency use of underwater equipment.

Description

Technical Field

[0001] The present invention belongs to the technical field of water area cleaning, and particularly relates to a dynamic sealing type anti-twisting cable connection device for a water area cleaning machine. Background Art

[0002] A water area cleaning machine is a device used for automatically or semi-automatically cleaning the bottom, side walls and water surface of a swimming pool, which can efficiently remove impurities such as sediment, leaves, algae, etc., and keep the water quality clean.

[0003] Water area cleaning machines usually require waterproof cable connectors to ensure electrical safety and equipment reliability during underwater operations. Considering safety, durability and ease of use, the cable connectors of water area cleaning machines need to be frequently pluggable and anti-twisting. In terms of pluggability, frequent plugging and unplugging may cause wear of the waterproof sealing ring, and water seepage or poor contact is likely to occur after long-term use. Although some quick-release connectors are convenient, their structures are complex, increasing the risk of failure. In terms of anti-twisting, traditional straight plug connectors lack a rotation design, and the cable is easily kinked during the operation of the cleaning machine, causing the connector to bear additional stress and accelerating the aging of the internal circuit; although some new models adopt a universal rotation or low-resistance rotating shaft design, rotation jamming or sealing degradation may still occur under high-intensity use. If the cable connector lacks a rotation mechanism or anti-torsion structure, the cable is easily twisted and knotted, which not only increases the motor load and shortens the service life, but may also pull the connector to cause a short circuit or detachment.

[0004] Therefore, how to solve the above problems and provide a waterproof cable connector that can effectively prevent water, is convenient for plugging and unplugging, and is anti-twisting for a water area cleaning machine is a technical problem that those skilled in the art urgently need to solve. Summary of the Invention

[0005] The purpose of the present invention is to provide a dynamic sealing type anti-twisting cable connection device for a water area cleaning machine in view of the problems in the prior art.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A dynamic sealing type anti-twisting cable connection device for a water area cleaning machine includes:

[0008] A plug unit and a socket unit that are rotatably installed;

[0009] The plug unit includes:

[0010] A composite housing structure, which is composed of an inner layer housing and an outer layer housing coaxially sleeved, forming an annular cavity and a bottom sealing cavity;

[0011] A first coil, the wire of which is spirally arranged around the outer wall of the inner layer housing in the annular cavity;

[0012] The first sealing body fills and seals the bottom sealing cavity;

[0013] The socket unit includes:

[0014] A columnar housing with a cylindrical cavity formed inside;

[0015] A second coil, the wires of which are spirally arranged around the inner wall in the cylindrical cavity;

[0016] The second sealing body fills and seals the cylindrical cavity;

[0017] The outer wall of the inner layer housing is provided with a radial protrusion;

[0018] An external thread portion on the outer wall of the columnar housing;

[0019] The inner wall of the connecting sleeve is provided with a thread that mates with the thread portion, and a limiting groove is formed at the end;

[0020] The radial protrusion and the limiting groove form a rotating pair for relative rotation;

[0021] There is no direct electrical connection element between the plug unit and the socket unit, and the contact portion between the radial protrusion and the limiting groove allows the existence and circulation of the water medium, and the alternating magnetic field penetrates the first sealing body and the second sealing body to achieve energy transmission.

[0022] While adopting the above technical solutions, the present invention can also adopt or combine the following technical solutions:

[0023] As a preferred technical solution of the present invention: The first coil and the second coil realize non-contact transmission of electric energy through alternating magnetic field coupling, and the current transmission direction is reversible;

[0024] When the current is transmitted from the second coil to the first coil:

[0025] The circuit board connected to the second coil converts the input current into an alternating current signal through a high-frequency amplifier and loads it onto the second coil to excite an alternating magnetic field;

[0026] The first coil generates an induced current in the alternating magnetic field and is converted into a DC output through the rectifying circuit connected thereto;

[0027] When the current is transmitted from the first coil to the second coil:

[0028] The circuit board connected to the first coil converts the input current into an alternating current signal through a high-frequency amplifier and loads it onto the first coil to excite an alternating magnetic field;

[0029] The second coil generates an induced current in the alternating magnetic field and is converted into a DC output through the rectifying circuit connected thereto.

[0030] As a preferred technical solution of the present invention: The first coil and the second coil are high-frequency coils;

[0031] The first coil is closely wound in a spiral structure on the outer wall of the inner shell;

[0032] The second coil is spirally wound coaxially with the first coil on the inner wall of the cylindrical cavity, forming a coaxial magnetic field coupling with the first coil. As a preferred technical solution of the present invention: The wire output end of the first coil and the interface of the first seal are fixedly sealed by epoxy resin to form a first fixed seal;

[0033] The wire output end of the second coil and the interface of the second seal are fixedly sealed by epoxy resin to form a second fixed seal.

[0034] As a preferred technical solution of the present invention: The plug unit and the socket unit are rotationally connected by threads.

[0035] As a preferred technical solution of the present invention: An anti-bending layer is wrapped outside the first insulating layer.

[0036] As a preferred technical solution of the present invention:

[0037] The signal transmission component of the plug unit includes: a first circuit board fixed to the bottom of the inner shell, integrating a first wireless transceiver; the head end of the first signal line is connected to the first circuit board, and the tail end penetrates through the first seal and extends to the outside, and the penetrating section is isolated from the first seal by a third fixed seal; the tail end of the first signal line is externally coated with a first insulating layer;

[0038] The signal transmission component of the socket unit includes: a second circuit board fixed to the bottom inside the cylindrical shell, integrating a second wireless transceiver; the second circuit board is connected to the head end of the first signal line through an inner signal line, and the tail end of the second signal line penetrates through the second seal and extends to the outside, and the penetrating section forms a fourth fixed seal and is externally coated with a second insulating layer.

[0039] As a preferred technical solution of the present invention: Both the first circuit board and the second circuit board are provided with waterproof coatings

[0040] Compared with the prior art, the dynamic seal type anti-winding cable connection device for the water area cleaning machine of the present invention has the following beneficial effects:

[0041] The dynamic seal type anti-winding cable connection device for the water area cleaning machine of the present invention adopts non-contact electromagnetic induction power supply, realizes power transmission through the magnetic field coupling of the plug unit containing the first coil and the socket unit containing the second coil, and at the same time uses wireless transmission to penetrate the seal to complete data interaction, completely eliminating the exposed conductors, solving the problem of failure caused by electrolytic corrosion of traditional joints. At the same time, through the innovative rotating pair structure formed by the cooperation of the radial protrusions and the limiting grooves, the plug unit is allowed to rotate continuously by 360°, solving the problem of winding. At the same time, it is convenient to cooperate with the open-type water flow design, preventing the cable from winding and avoiding the accumulation of pressure in the sealed cavity, realizing long-term waterproofing under dynamic working conditions.

[0042] The plug unit and the socket unit in the present invention are rotatably installed, and the connecting sleeve adopts a cam-type limiter to ensure axial locking while achieving circumferential free rotation. Through the double helix structure of the plug unit, the socket unit and the connecting sleeve, the cable will not accumulate torque due to the movement of the cleaning machine, effectively eliminate twisting and absorb the torsional stress of the cable, prevent the wire core from breaking, extend the life of the motor and the cable, and realize dynamic anti-entanglement of the cable joint.

[0043] The present invention realizes a bidirectional wireless energy transmission module through the cooperation of the first coil and the second coil, and is adapted to dual-mode requirements such as charging or power supply of the water area cleaning machine. The cleaning machine is automatically charged when it docks at the base station. After being fully charged, there is no need to plug and unplug the physical connector for external power supply. It also supports multiple cleaning machines to be powered or charged in turn, which is convenient for promotion and application.

[0044] In the present invention, the cable connector unit and the socket unit are unfastened by connecting the sleeve, so that the cable connector can be plugged and unplugged, and the cable connector can rotate freely with the main machine when the water cleaning machine is running, and the cable can be automatically unwound. At the same time, the fully enclosed magneto-electric-photoelectric transmission overcomes the problems of conductor leakage and corrosion in water. In the present invention, the double seals are poured to protect key components, and the water gap structure of the contact part takes into account pressure balance and fluid discharge, which significantly improves the reliability of the connector in the chlorine / high-salt environment of the swimming pool, and provides a pluggable, anti-winding, corrosion-resistant, and maintenance-free feature, which is particularly suitable for long-term high-frequency use of underwater equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a structural schematic diagram of a dynamic sealing anti-entanglement cable connection device for a water area cleaning machine of the present invention;

[0046] Figure 2 This is a diagram showing the use status of a dynamic sealing anti-entanglement cable connection device for a water area cleaning machine of the present invention;

[0047] Figure 3 A cross-sectional view of a dynamic sealing anti-entanglement cable connection device for a water area cleaning machine of the present invention;

[0048] Figure 4 A partial cross-sectional view of a dynamic sealing anti-entanglement cable connection device for a water cleaning machine of the present invention Figure 1 ;

[0049] Figure 5 A partial cross-sectional view of a dynamic sealing anti-entanglement cable connection device for a water area cleaning machine of the present invention Figure 2 ;

[0050] In the drawings, plug unit 1; inner layer shell 11; bottom sealing cavity 14; first coil 15; first sealing body 16; anti-bending layer 100; radial protrusion 111; socket unit 2; columnar housing 21; columnar cavity 22; second coil 23; second sealing body 24; external thread portion 211; connecting sleeve 3; limiting groove 32. Detailed implementation mode

[0051] The present invention will be further described in detail with reference to the drawings and specific embodiments.

[0052] As Figures 1-5 shown, a dynamic sealing type anti-winding cable connection device for a water area cleaning machine

[0053] comprises:

[0054] A plug unit 1 and a socket unit 2 rotatably mounted;

[0055] The plug unit includes:

[0056] A composite housing structure, which is composed of an inner layer shell 11 and an outer layer shell 12 coaxially sleeved, forming an annular cavity 13 and a bottom sealing cavity 14;

[0057] A first coil 15, the wire of which is spirally arranged around the outer wall of the inner layer shell 11 in the annular cavity 13;

[0058] A first sealing body 16 seals the bottom sealing cavity 14 by perfusion;

[0059] The socket unit includes:

[0060] A columnar housing 21, with a columnar cavity 22 formed inside;

[0061] A second coil 23, the wire of which is spirally arranged around the inner wall in the columnar cavity 22;

[0062] A second sealing body 24 seals the columnar cavity 22 by perfusion;

[0063] The outer wall of the inner layer shell 11 is provided with a radial protrusion 111;

[0064] An external thread portion 211 on the outer wall of the columnar housing 21;

[0065] A connecting sleeve 3, the inner wall of which is provided with a thread 31 matching the external thread portion 211, and a limiting groove 32 is formed at the end;

[0066] The radial protrusion 111 and the limiting groove 32 form a rotating pair for relative rotation;

[0067] There is no direct electrical connection element between the plug unit and the socket unit. The contact part of the radial protrusion 111 and the limiting groove 32 allows the existence and circulation of water medium. The alternating magnetic field penetrates the first sealing body 16 and the second sealing body 24 to achieve wireless power transmission based on the principle of electromagnetic induction.

[0068] The first coil 15 and the second coil 23 constitute a two-way wireless energy transmission module, and the current transmission direction is reversible;

[0069] When the current is transmitted from the second coil 23 to the first coil 15:

[0070] The circuit board 4 connected to the second coil 23 converts the input current into an AC signal through a high-frequency amplifier and loads it onto the second coil 23 to excite an alternating magnetic field;

[0071] The first coil 15 generates an induced current in the alternating magnetic field and is converted into a DC output through the rectifying circuit 5 connected thereto;

[0072] When the current is transmitted from the first coil 15 to the second coil 23:

[0073] The circuit board 4 connected to the first coil 15 converts the input current into an AC signal through a high-frequency amplifier and loads it onto the first coil 15 to excite an alternating magnetic field;

[0074] The second coil 23 generates an induced current in the alternating magnetic field and is converted into a DC output through the rectifying circuit 5 connected thereto.

[0075] The interface between the wire output end of the first coil 15 and the first sealing body 16 forms a first fixed seal through epoxy resin;

[0076] The interface between the wire output end of the second coil 23 and the second sealing body 24 forms a second fixed seal through epoxy resin.

[0077] The first coil and the second coil are high-frequency coils;

[0078] The first coil is closely wound in a spiral structure on the outer wall of the inner shell;

[0079] The second coil is coaxially spirally wound on the inner wall of the cylindrical cavity with the first coil to form a coaxial magnetic field coupling with the first coil.

[0080] The plug unit and the socket unit are rotationally connected by threads.

[0081] The outside of the first insulating layer is wrapped with an anti-bending layer 100.

[0082] The outer bottom of the inner shell 11 is fixedly installed with a first circuit board,

[0083] The first circuit board is integrated with a first wireless transceiver,

[0084] One end of the circuit board is electrically connected to the head end of the first signal line.

[0085] The tail end of the first signal line penetrates through the first sealing body 16 and extends to the outside.

[0086] A third fixed seal is formed between the penetrating section of the first signal line and the first sealing body 16.

[0087] A second circuit board is fixedly installed at the inner bottom of the columnar housing 21.

[0088] A second wireless transceiver is integrated on the second circuit board.

[0089] Inner signal lines are arranged in the columnar cavity 22.

[0090] The second circuit board is connected to the head end of the second signal line through the inner signal lines.

[0091] The tail end of the second signal line penetrates through the second sealing body 24 and extends to the outside.

[0092] A fourth fixed seal is formed between the penetrating section of the second signal line and the second sealing body 24.

[0093] An insulating layer one is coated on the outside of the tail end of the first signal line.

[0094] An insulating layer two is coated on the outside of the tail end of the second signal line.

[0095] Both the first circuit board and the second circuit board are provided with waterproof coatings.

[0096] For the dynamic seal type anti - winding cable connection device for a water area cleaning machine of the present invention, through the socket - joint cooperation between the inner layer shell of the plug unit and the socket unit, and the threaded locking of the connecting sleeve with the socket unit and the clamping of the connecting sleeve with the plug unit, one - hand quick plugging and unplugging can be realized. The rotational design of the radial protrusions and the limit grooves ensures automatic alignment during plugging, avoiding misoperation and realizing quick - detachable pluggable;

[0097] The first sealing body / second sealing body is compression - molded with an elastic material to seal and waterproof the electrical connection components. During use or plugging and unplugging, power transmission is realized through magnetic field coupling, effectively waterproofing.

[0098] In the present invention, the first coil forms a columnar first coil around the inner layer shell in the annular cavity, and the second coil forms a columnar second coil around the socket unit in the second cavity. When the cleaning machine works, the torsional force of the cable will be absorbed by the elastic deformation of the two coils, avoiding stress conduction to the inside of the joint; anti - torsion is achieved through the double - helix coils.

[0099] An axially limited but circumferentially rotatable structure is formed by the cooperation of the connector with the protrusion-groove of the socket unit, allowing the joint housing to rotate freely by 360°, so that the cable will not accumulate torque due to the movement of the cleaning machine.

[0100] Through the cooperation of the first coil and the second coil, the present invention realizes a bidirectional wireless energy transmission module, which adapts to the dual-mode requirements such as charging or power supply of the water cleaning machine. When the cleaning machine docks at the base station, it can be automatically charged. After being fully charged, there is no need to plug and unplug the physical connector for external power supply, and it supports multiple cleaning machines to supply power or charge in turn, which is convenient for popularization and application.

[0101] The dynamic sealing type anti-twist cable connection device for the water cleaning machine of the present invention adopts an integrated design. The unique anti-twist structure can effectively avoid cable knotting, ensure smooth movement of the cleaning machine, and realize full-coverage path planning; the mechanical locking plug-in design eliminates the risk of accidental detachment. Combined with the corrosion resistance of engineering plastics and silicone seals, it can resist the erosion of pool chemicals for a long time, providing a high-reliability, high-energy-efficiency, and suitable for high-intensity use of the pool scenario, significantly improving the comprehensive performance of the water cleaning machine in terms of waterproof performance, anti-twist, and service life.

[0102] Embodiment 1

[0103] The dynamic sealing type anti-twist cable connection device for the water cleaning machine of the present invention, which takes into account the waterproof cable joint that can be plugged and unplugged and anti-twisted, includes a plug unit, a socket unit and a connecting sleeve.

[0104] The plug unit includes a plug unit, a first coil and a first seal.

[0105] The plug unit includes an inner shell and an outer shell.

[0106] An inner cavity is formed inside the inner shell.

[0107] An annular cavity is formed between the outer wall of the outer shell and the inner shell, which is a ring-shaped cavity.

[0108] An outer cavity is formed between the outer bottom of the outer shell and the inner shell, which is a bottom sealing cavity.

[0109] The annular cavity communicates with the bottom sealing cavity.

[0110] The first seal seals the bottom sealing cavity.

[0111] The first part of the first coil winds around the outer wall of the inner shell in the annular cavity to form a first coil.

[0112] The second part of the first coil extends out of the first seal to the outside of the first seal.

[0113] A fixed seal is formed between the second part of the first coil and the first seal.

[0114] The socket unit includes a socket unit, a second coil, and a second seal body.

[0115] A cylindrical cavity 22 is formed inside the socket unit.

[0116] The second seal body seals the cylindrical cavity 22.

[0117] The first part of the second coil winds around the inner wall of the socket unit inside the cylindrical cavity to form the second coil.

[0118] The second part of the second coil extends out of the second seal body to the outside of the inner seal cavity.

[0119] A fixed seal is formed between the second part of the second coil and the second seal body.

[0120] The shapes of the first coil and the second coil are both cylindrical.

[0121] The inner layer shell is sleeved outside the socket unit, and a detachable connection is formed between the plug unit and the socket unit.

[0122] A threaded connection is formed between the inner wall of the connecting member and the outer wall of the inner layer shell.

[0123] A groove is formed between the inner end face of the connecting member and the outer end face of the inner layer shell.

[0124] A ring-shaped radial protrusion is provided on the outer side wall of the socket unit.

[0125] The radial protrusion can rotate in the limit groove.

[0126] The materials of the first seal body and the second seal body are potted epoxy resin glue.

[0127] Current can flow from the first coil to the second coil, or from the second coil to the first coil.

[0128] If the current flows from the second coil to the first coil, the circuit board connected to the second coil loads the input current in the form of high-frequency alternating current on the second coil through an amplifier, so that the second coil generates an alternating current and a changing magnetic field. According to Faraday's law of electromagnetic induction, when a conductor moves in a magnetic field or the magnetic field changes, an induced electromotive force will be generated. Since the first coil is in this alternating magnetic field, an alternating current will also be generated in the first coil at this time. The current is rectified by the circuit board connected to the first coil and then becomes direct current for use by the subsequent circuit.

[0129] If current flows from the first coil to the second coil, the circuit board connected to the first coil loads the input current onto the first coil in the form of high-frequency alternating current through an amplifier, so that the first coil generates an alternating magnetic field. According to Faraday's law of electromagnetic induction, when a conductor moves in a magnetic field or the magnetic field changes, an induced electromotive force will be generated. Since the second coil is within this alternating magnetic field, an alternating current will also be generated in the second coil at this time. This current is rectified by the circuit board connected to the second coil and becomes direct current for use by the subsequent circuit.

[0130] Since there are no electrical components such as wires between the plug unit and the socket unit, even if the contact area between the plug unit and the socket unit becomes loose due to repeated plugging and unplugging and rotation, or water enters the contact area between the plug unit and the socket unit, there will be no electric leakage.

[0131] Since a fixed seal is formed between the second part of the second coil and the opening of the second seal body, this prevents water from entering the inner sealed cavity and contacting the second coil. A fixed seal is formed between the second part of the first coil and the opening of the first seal body, preventing water from entering the outer sealed cavity and contacting the first coil. This prevents the cable from leaking electricity in water.

[0132] The radial protrusion can rotate in the limit groove. In this way, during the rotation of the radial protrusion in the limit groove, the socket unit and the plug unit rotate relative to each other, and a rotatable connection is formed between the socket unit and the plug unit body.

[0133] The outer bottom of the socket unit can extend into the inner bottom of the inner layer shell.

[0134] In this way, it is beneficial to increase the relative area between the first coil and the second coil, which is more conducive to power transmission between the first coil and the second coil, and the rotation between the plug unit and the socket unit is also more stable.

[0135] The axis of the second coil and the axis of the first coil are the same axis.

[0136] In this way, it is more conducive to power transmission between the first coil and the second coil.

[0137] The first coil is a high-frequency coil, and the second coil is a high-frequency coil.

[0138] The outside of the second part of the first coil is wrapped with an insulating layer I.

[0139] The outside of the second part of the second coil is wrapped with an insulating layer II.

[0140] In this way, it is prevented that the first coil and the second coil leak electricity after contacting water.

[0141] The outside of the insulating layer I is wrapped with an anti-bending layer.

[0142] In this way, the anti-bending layer plays a protective role for the insulating layer, preventing the insulating layer from cracking and leaking due to too many bending times.

[0143] The material of the anti-bending layer is nylon.

[0144] The anti-bending layer is a PE joint.

[0145] A threaded connection is formed between the anti-bending layer and the socket unit.

[0146] In this way, it is convenient to disassemble the anti-bending layer from the socket unit.

[0147] A circuit board one is installed at the outer bottom of the inner shell,

[0148] A transceiver one is installed on the circuit board one,

[0149] One end of a signal line one is connected to the circuit board one,

[0150] The other end of the signal line one extends out of the first sealing body from the first sealing body,

[0151] A circuit board two is installed at the inner bottom of the socket unit,

[0152] A transceiver two is installed on the inner circuit board,

[0153] There is an inner signal line in the inner sealing cavity,

[0154] One end of a signal line two is connected to the circuit board two,

[0155] The other end of the signal line two extends out of the second sealing body from the second sealing body,

[0156] The second part of the signal line one is wrapped with an insulating layer one,

[0157] The second part of the signal line two is wrapped with an insulating layer two.

[0158] In this way, the cable joint has the function of transmitting signals.

[0159] Preferably, both the transceiver one and the transceiver two are infrared optoelectronic transceivers. In this way, the transceiver one and the transceiver two will not be interfered by the magnetic fields generated by the first coil and the second coil.

[0160] The circuit board one and the circuit board two are PCB circuit boards.

[0161] A water area cleaning machine, including a dynamic sealing type anti-winding cable connection device for the water area cleaning machine,

[0162] including a general shell and a sealing cabin,

[0163] The sealing cabin is located inside the general shell,

[0164] The overall shell includes an upper shell and a lower shell.

[0165] The plug unit is installed on the upper shell.

[0166] The inner cavity of the inner shell faces the outside of the overall shell.

[0167] The outer cavity of the outer shell faces the inside of the overall shell.

[0168] The above specific embodiments are used to explain the present invention. They are only the preferred embodiments of the present invention and do not limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and scope of the claims of the present invention fall within the protection scope of the present invention.

Claims

1. A dynamic sealing type anti - winding cable connection device for a water area cleaning machine, characterized in that, Comprising: A plug unit and a socket unit rotatably mounted; The plug unit includes: A composite housing structure composed of an inner shell and an outer shell coaxially sleeved, forming an annular cavity and a bottom sealed cavity; A first coil, the wire of which is spirally arranged around the outer wall of the inner shell in the annular cavity; A first sealing body fills and seals the bottom sealed cavity; The socket unit includes: A columnar housing with a columnar cavity formed inside; A second coil, the wire of which is spirally arranged around the inner wall in the columnar cavity; A second sealing body fills and seals the columnar cavity; A radial protrusion is provided on the outer wall of the inner shell, an external thread portion is provided on the outer wall of the columnar housing, an internal thread matching the thread portion is provided on the inner wall of the connecting sleeve, and a limiting groove is formed at the end. The radial protrusion and the limiting groove form a rotating pair for relative rotation; there is no direct electrical connection element between the plug unit and the socket unit, and the contact portion between the radial protrusion and the limiting groove allows the existence and circulation of water medium, and the alternating magnetic field penetrates the first sealing body and the second sealing body to achieve energy transmission.

2. The dynamic seal type anti-winding cable connection device for a water area cleaning machine according to claim 1, characterized in that: The first coil and the second coil realize contactless transmission of electric energy through alternating magnetic field coupling, and the current transmission direction is reversible; When the current is transmitted from the second coil to the first coil: The circuit board connected to the second coil converts the input current into an alternating current signal through a high-frequency amplifier and loads it onto the second coil to excite an alternating magnetic field; The first coil generates an induced current in the alternating magnetic field and is converted into a DC output through the rectifying circuit connected thereto; When the current is transmitted from the first coil to the second coil: The circuit board connected to the first coil converts the input current into an alternating current signal through a high-frequency amplifier and loads it onto the first coil to excite an alternating magnetic field; The second coil generates an induced current in the alternating magnetic field and is converted into a DC output through the rectifying circuit connected thereto.

3. The dynamic sealing type anti - winding cable connection device for the water area cleaning machine according to claim 1, wherein: The first coil and the second coil are high-frequency coils; The first coil is closely wound in a spiral structure on the outer wall of the inner shell; The second coil is spirally wound coaxially with the first coil on the inner wall of the columnar cavity to form a coaxial magnetic field coupling with the first coil.

4. The dynamic sealing type anti-winding cable connection device for a water area cleaning machine according to claim 1, characterized in that: A first fixed seal is formed by epoxy resin at the interface between the wire output end of the first coil and the first sealing body; A second fixed seal is formed by epoxy resin at the interface between the wire output end of the second coil and the second sealing body.

5. The dynamic sealing type anti-winding cable connecting device for a water area cleaning machine according to claim 1, wherein: The plug unit and the socket unit are axially fixed through a threaded structure, and at the same time, a rotating pair structure formed by the radial protrusion and the limiting groove realizes the relative rotation of the two around the axis, so as to maintain a dynamic rotation function in the mechanically locked state.

6. The dynamic seal type anti-winding cable connecting device for the water area cleaning machine according to claim 1, characterized in that: The signal transmission component of the plug unit includes: a circuit board one fixed at the bottom of the inner shell, integrating a wireless transceiver one; the head end of the signal line one is connected to the circuit board one, and the tail end penetrates through the first sealing body and extends to the outside, and the penetrating section is isolated from the first sealing body through a third fixed seal; an insulating layer one is coated outside the tail end of the signal line one; The signal transmission component of the socket unit includes: a second circuit board fixed to the inner bottom of the columnar housing and integrating a second wireless transceiver; the second circuit board is connected to the head end of the second signal line through an inner signal line, and the tail end of the second signal line penetrates through the second sealing body and extends to the outside, and the penetrating section forms a fourth fixed seal, and an insulating layer II is coated on the outside.

7. The dynamic seal type anti-winding cable connection device for a water area cleaning machine according to claim 6, characterized in that: An anti-bending layer is wrapped outside the first insulating layer.

8. The dynamic sealing type anti-winding cable connecting device for a water area cleaning machine according to claim 6, characterized in that: Both the first circuit board and the second circuit board are provided with waterproof coatings.

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