Waterproof extension cord structure

Abstract

The utility model belongs to the technical field of extension lines, and particularly relates to a waterproof extension line structure, which comprises a protective cover formed by fixedly connecting a first shell and a second shell, a winding reel is rotatably arranged in the protective cover, a wire is wound on the outer circular surface of the winding reel, and a first port is arranged on one side of the winding reel on the end surface of the protective cover. A first port is formed in the end face of one side of the protective cover, two insertion pieces are arranged in the first port in a sliding mode, a second port is formed in the end face of the other side of the protective cover, a socket connected with a wire is arranged in the second port in a sliding mode, sealing assemblies are arranged outside the first port and the second port, and a dust removal and moisture prevention assembly is arranged in the second port on one side of the socket. According to the utility model, the sealing assembly is matched with the dust-removing and moisture-proof assembly, so that the protective cover can perform sealing and protection treatment on the lead and the insertion sheets and the socket at the two ends, the inside can be always kept in a dry state, the waterproof and moisture-proof effects are good, and the safe operation during power connection is effectively ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of extension cords, and particularly relates to a waterproof extension cord structure. Background Art

[0002] A power extension cord is a device that can extend the power supply path. It usually includes a plug and several sockets. Since the extension cord needs to be energized, certain waterproof and moisture-proof effects of the extension cord need to be ensured. In the current existing technologies, there are both settings that can protect the wiring ports and settings that can wind up and protect the extension cord.

[0003] For example, patent application number CN202121272655.6 discloses a waterproof power extension cord, which includes an extension cord body, a connector installed on the extension cord body, and a connection shell installed on the electrical wire plug. The connector matches the electrical wire plug. An activity shell is slidably connected to the outer wall of the connector. The connection shell can be sleeved on the outer wall of the electrical wire plug and is detachably connected to the activity shell. The connection shell includes a first outer shell and a second outer shell. A connection component is provided at the lower end of the first outer shell. The first outer shell is movably connected to the second outer shell through the connection component. The waterproof power extension cord provided by the utility model is provided with an activity shell and a connection shell. Among them, the first outer shell, the second outer shell and the connection component in the connection shell cooperate with each other to sleeve the connection shell on the electrical wire plug. The activity shell is threadedly connected to the connection shell to protect the connection between the connector and the electrical wire plug, effectively improving the waterproof performance of the connection and eliminating potential safety hazards.

[0004] And CN202222067201.6 also discloses an extension cord with stable connection. Its technical solution includes: a power board, a connection disk and a fixing plate. A plug board is movably connected inside the power board. A storage box is fixedly connected to one side of the power board. A connection wire is fixedly connected to one side of the power board. A wiring board is fixedly connected to one side of the connection wire. A transmission rod is movably connected inside the storage box. A storage disk is sleeved on the periphery of the transmission rod. A connection disk is fixedly connected to the top of the transmission rod. A storage groove is arranged inside the connection disk. A grip rod is movably connected to the top of the storage groove. In the utility model, a plug board is movably connected inside the power board. When the device is in use, the staff can hold the protective pad and drive the transmission rod to rotate by rotating the connection disk. At this time, the connection wire can be wound and released by driving the storage disk, which is convenient for the device to be stored and extended according to the use length, improving the convenience of the device in use.

[0005] Although there are already some settings for protecting the wiring ports during power connection and settings for protecting the retractable extension cord in the prior art, there are still some deficiencies: Firstly, the existing retractable storage device has poor waterproof and dustproof performance, and the wire receiving port is exposed for a long time, which easily causes water vapor to enter the device interior and corrode various internal components, seriously affecting the use of the device; Secondly, the power connection ports at both ends of the existing extension cord are still exposed to the outside for a long time when not in use, and during this period, they are easily corroded by water vapor or adhered and contaminated by dust, and are prone to damage. Summary of the Invention

[0006] In order to overcome the deficiencies of the prior art, the present invention provides a waterproof extension cord structure. Through the setting of the sealing component in cooperation with the dust removal and moisture-proof component, the present invention enables the protective cover to perform sealing protection on the wire and the plug and socket at both ends, and at the same time, it can ensure that the interior is always in a dry state, has a good waterproof and moisture-proof effect, and effectively guarantees the safe operation during power connection.

[0007] In order to achieve the above object, the present invention provides the following technical solution: A waterproof extension cord structure, comprising a protective cover formed by fixedly connecting a first housing and a second housing, characterized in that a winding drum is rotatably arranged inside the protective cover, a wire is wound on the outer circumferential surface of the winding drum, a first port is arranged on the end surface of the protective cover on one side of the winding drum, two plugs are slidably arranged inside the first port, a second port is arranged on the end surface of the other side of the protective cover, and a socket connected to the wire is slidably arranged inside the second port. A sealing component is arranged outside the first port and the second port, and a dust removal and moisture-proof component is arranged inside the second port on one side of the socket; the plug and the socket are both in the prior art and will not be elaborated too much in this article. Both are connected to the wire to complete the current connection process.

[0008] The dust removal and moisture-proof component includes a dust removal cylinder arranged outside the wire and inside the second port. A plurality of scraping rings fitting on the outer circumferential surface of the wire are evenly arranged in the dust removal cylinder along a straight line direction. A plurality of elastic inclined plates inclined outward are evenly arranged on the end surface of the dust removal cylinder on one side of the scraping ring along the circumferential direction. A plurality of dial rods are arranged on the end surface of the elastic inclined plate close to the wire. The plurality of scraping rings are all made of rubber elastic material, and the plurality of scraping rings are all wrapped and pressed outside the wire. While scraping off the water stains and dirt on the outside of the wire, they also have a good sealing effect and can prevent water vapor from entering the protective cover interior.

[0009] Preferably, the sealing assembly includes a sealing end cover disposed at the first port. A notch for the insertion piece to slide is provided on the sealing end cover. One end of a first connecting band is connected to the outer part of the sealing end cover on the end face of the first port. The other end of the first connecting band is connected to a first sealing cover, and the first sealing cover is in sealing cooperation with the end face of the sealing end cover. The sealing end cover and the first sealing cover can perform waterproof and dustproof treatment on the insertion piece.

[0010] Preferably, the sealing assembly further includes a sealing frame disposed on the end face of the second port outside the plug. One end of a second connecting band is connected to the outer part of the sealing frame on the end face of the second port. The other end of the second connecting band is connected to a second sealing cover, and the second sealing cover is in sealing cooperation with the end face of the sealing frame. The sealing frame and the second sealing cover can form a preventive protection treatment outside the scraping ring.

[0011] Preferably, a rotating shaft is provided at the center of the winding cylinder. A rotating disk is connected to the upper end face of the rotating shaft on the end face of the first housing. A fixing cylinder is provided on the end face of the rotating disk. A fixing rod is slidably disposed in the fixing cylinder. A plurality of connecting holes are uniformly arranged along the circumferential direction on the end face of the first housing below the fixing rod. The setting of the fixing rod and the connecting holes enables the length of the wire winding and unwinding to be fixed.

[0012] Preferably, the dust removal and moisture-proof assembly further includes a plurality of liquid discharge holes provided on the outer circumferential surface of the bottom of the dust removal cylinder. A collecting cylinder is provided inside the second port outside the liquid discharge holes. A liquid discharge pipe is connected and communicated to the outer circumferential surface of the bottom of the collecting cylinder. One end of the bottom of the liquid discharge pipe is connected and communicated to the end face of the second port. The setting of the collecting cylinder and the liquid discharge pipe enables the water stains and dirt scraped inside the second port to be discharged out in time, avoiding affecting the inside of the protective cover.

[0013] Preferably, the sealing assembly further includes a sealing plug sealingly fitted inside the bottom of the liquid discharge pipe. One end of a connecting rope is connected to the bottom end face of the sealing plug. The other end of the connecting rope is connected to the end face of the second sealing cover. The setting of the connecting rope and the sealing plug can improve the sealing and fixing effect of the second sealing cover.

[0014] Preferably, a conductive sliding plate is slidably disposed inside the first port. An insertion piece is connected to the end face of the conductive sliding plate close to the sealing end cover. Second rectangular openings are provided on the end face of the first port on both sides of the conductive sliding plate. A first sealing sliding plate is slidably disposed outside the second rectangular openings, and the first sealing sliding plate is connected to the conductive sliding plate. The setting of the first sealing sliding plate enables the insertion piece to smoothly slide out for power connection while preventing moisture and dirt from entering the protective cover.

[0015] Preferably, first rectangular openings are provided on both the upper and lower sides of the socket on the end face of the second port. A bent connecting plate that abuts against the inner end face of the socket is slidably arranged in the first rectangular openings, and a second sealing sliding plate is connected and arranged on the outer side of the bent connecting plate on the end face of the second port. The arrangement of the bent connecting plate makes it convenient to take out the socket after it is sealed and stored in the second port.

[0016] Preferably, the dust removal and moisture-proof component further includes a plurality of chutes provided on the inner walls of the first housing and the second housing. An adsorption plate is slidably arranged in each chute, and gaskets are connected and arranged at the corners of the first housing and the second housing with the outer end face of the adsorption plate. The gaskets can perform sealing and protection treatment on the openings of the chutes. The arrangement of the adsorption plate and the gaskets enables the moisture inside the protective cover to be quickly adsorbed and is convenient for replacement, and at the same time, the outside of the protective cover can be protected.

[0017] Preferably, fixing holes for mutual fixation are provided at the four corners of the end faces of the first housing and the second housing.

[0018] In summary, compared with the prior art, the beneficial effects of this solution are as follows:

[0019] (1) Through the setting of the protective cover, the first port, and the second port matching sealing components in the present invention, the wound wires, unused inserts, sockets, etc. can all be subjected to sealing and protection treatment, effectively preventing external dust, water stains, etc. from entering the interior, having a good waterproof effect, and effectively improving the safety during use;

[0020] (2) Through the designs of the dust removal cylinder, the scraping ring, the elastic inclined plate, the drain pipe, etc. in the present invention, when the wire with the largest contact area with the outside is wound inward for storage, the dust, water stains, etc. that may adhere to the surface can be effectively scraped off and discharged outward, effectively preventing water stains and dirt from entering the protective cover, and effectively ensuring a good storage environment inside the protective cover;

[0021] (3) Through the setting of the adsorption plate and the gaskets in the present invention, the moisture inside the protective cover can be quickly adsorbed and is convenient for replacement, and at the same time, the outside of the protective cover can be protected, so that the damage caused by bumps to the protective cover can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a perspective view of the present invention;

[0023] Figure 2 is a front view of the present invention;

[0024] Figure 3 is a top view of the present invention;

[0025] Figure 4 isFigure 3 Stereoscopic sectional view at A-A in

[0026] Figure 5 is Figure 4 Partial enlarged view at B in

[0027] Figure 6 Stereogram of the protective cover part;

[0028] Figure 7 Stereogram of the dust removal cylinder part;

[0029] Figure 8 Stereogram of the adsorption plate part;

[0030] Figure 9 Stereogram of the insert part;

[0031] Figure 10 Stereogram of the winding cylinder part;

[0032] In the figure: protective cover 10, first housing 11, rotating disk 12, fixed cylinder 13, fixed rod 14, fixed hole 15, gasket 16, first port 17, second port 18, first sealing cover 19, second sealing cover 20, first connecting belt 21, second connecting belt 22, first sealing slide plate 23, second sealing slide plate 24, second housing 25, socket 26, sealing end cover 27, sealing frame 28, insert 29, conductive slide plate 30, chute 31, adsorption plate 32, dust removal cylinder 33, wire 34, rotating shaft 35, winding cylinder 36, elastic inclined plate 37, lever 38, scraping ring 39, drain pipe 40, sealing plug 41, connecting rope 42, bent connecting plate 43, drain hole 44, connecting hole 45, first rectangular opening 46, second rectangular opening 47, collection cylinder 48. Detailed implementation method

[0033] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0034] Embodiment 1:

[0035] As Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 7As shown in the figure, a waterproof extension cord structure includes a protective cover 10 formed by fixedly connecting a first housing 11 and a second housing 25. A winding drum 36 is rotatably arranged inside the protective cover 10. A wire 34 is wound around the outer circumferential surface of the winding drum 36. One side of the winding drum 36 is provided with a first port 17 on the end surface of the protective cover 10. Two inserts 29 are slidably arranged inside the first port 17. The other side end surface of the protective cover 10 is provided with a second port 18. A socket 26 connected to the wire 34 is slidably arranged inside the second port 18. A sealing component is arranged outside the first port 17 and the second port 18. A dust removal and moisture-proof component is arranged inside the second port 18 on one side of the socket 26.

[0036] The dust removal and moisture-proof component includes a dust removal cylinder 33 arranged outside the wire 34 inside the second port 18. A plurality of scraping rings 39 that fit on the outer circumferential surface of the wire 34 are uniformly arranged along a straight line direction inside the dust removal cylinder 33. On one side of the scraping ring 39, a plurality of elastic inclined plates 37 that incline outwards are uniformly arranged along the circumferential direction on the end surface of the dust removal cylinder 33. A plurality of push rods 38 are arranged on the end surface of the elastic inclined plate 37 close to the wire 34.

[0037] A sealing ring is arranged on the contact surface where the first housing 11 and the second housing 25 are mutually attached. The inserts 29 and the socket 26 cooperate with the wire 34 for current connection and conduction. The outside of the wire 34 is wrapped with a moisture-proof insulating material, which can prevent water from entering the inside of the wire 34. The arrangement of the winding drum 36 enables the protective cover 10 to wind up and store the wire 34. Discs are arranged at the upper and lower ends of the winding drum 36, and the discs are respectively rotatably arranged on the inner end surfaces of the first housing 11 and the second housing 25, which can protect the upper and lower end surfaces of the wound-up wire 34.

[0038] The bottom end surface of each push rod 38 is arc-shaped. The lengths of the plurality of push rods 38 are longer the closer they are to the socket 26, and vice versa. The lengths of the plurality of push rods 38 are different, but the bottom arc surfaces all abut against the outer circumferential surface of the wire 34. When the wire 34 is wound inwards, the plurality of push rods 38 and the elastic inclined plates 37 will generate a certain amount of jitter. The jittering push rods 38 will pick off and clean the dirt on the surface of the wire 34. During this process, the longer the push rod 38, the greater the jitter amplitude. Therefore, the jitter amplitude of the outer push rods 38 is greater than that of the inner push rods 38, so that the dirt can be cleaned at the front end of the dust removal cylinder 33. The diameters of the plurality of scraping rings 39 are the same, and they are all wrapped outside the wire 34 to scrape off the remaining dirt or water stains on the wire 34 to prevent them from being brought into the inside.

[0039] Further, as Figure 4 and Figure 5As shown, the dust removal and moisture-proof component further includes a plurality of liquid discharge holes 44 provided on the outer circumferential surface of the bottom of the dust removal cylinder 33. A collection cylinder 48 is provided inside the second port 18 outside the liquid discharge holes 44. A liquid discharge pipe 40 is connected and provided on the outer circumferential surface of the bottom of the collection cylinder 48, and one end of the bottom of the liquid discharge pipe 40 is connected and provided on the end surface of the second port 18.

[0040] Both ends of the collection cylinder 48 are provided with openings to facilitate the movement of the wire 34. The opening diameter is the same as the outer diameter of the dust removal cylinder 33. The inner sides of both ends of the collection cylinder 48 are attached to the end surface of the dust removal cylinder 33. Cooperating with a plurality of scraping rings 39 can prevent moisture from entering the protective cover 10 through the collection cylinder 48. The plurality of liquid discharge holes 44 can discharge the water stains and dirt scraped off by the scraping rings 39 and the lever 38 outward. Then, after being collected by the collection cylinder 48, it is discharged outward through the liquid discharge pipe 40, thus avoiding excessive internal moisture.

[0041] As Figure 2 、 Figure 4 、 Figure 6 and Figure 9 As shown, the sealing component includes a sealing end cover 27 provided at the first port 17. The sealing end cover 27 is provided with a notch for the sliding of the insert piece 29. One end of a first connecting band 21 is connected and provided on the end surface of the first port 17 outside the sealing end cover 27. The other end of the first connecting band 21 is connected and provided with a first sealing cover 19, and the first sealing cover 19 is in sealing cooperation with the end surface of the sealing end cover 27.

[0042] The sealing end cover 27 is made of moisture-proof rubber, and a convex ring block for sealing is provided on its end surface. It can abut against the outside of the external power supply port when the insert piece 29 is inserted into the external power supply, so as to protect the insert piece 29. In this relationship, a concave ring groove matching the convex ring is also provided on the end surface of the first sealing cover 19, and the two cooperate with each other to seal the first port 17 and the insert piece 29.

[0043] Furthermore, as Figure 2 、 Figure 4 、 Figure 5 and Figure 10 As shown, a sealing frame 28 is further provided on the outside of the plug 26 at the end surface of the second port 18. One end of a second connecting band 22 is connected and provided on the end surface of the second port outside the sealing frame 28. The other end of the second connecting band 22 is connected and provided with a second sealing cover 20, and the second sealing cover 20 is in sealing cooperation with the end surface of the sealing frame 28.

[0044] The material of the sealing frame 28 is the same as that of the sealing end cover 27. A convex surface matching the second sealing cover 20 is provided on the outer end surface of the sealing frame 28 for convenient sealing and fixing.

[0045] Furthermore, as Figure 4 and Figure 5As shown, the sealing assembly further includes a sealing plug 41 disposed at the bottom inside of the drain pipe 40 in a sealing fit. One end of a connecting rope 42 is connected to the bottom end face of the sealing plug 41, and the other end of the connecting rope 42 is connected to the end face of the second sealing cover 20.

[0046] Both the second connecting band 22 and the connecting rope 42 are made of conventional elastic rope materials, which can tension the upper and lower ends of the second sealing cover 20 to ensure that the second sealing cover 20 can always be buckled on the sealing frame 28. In this relationship, the sealing arrangement between the second sealing cover 20 and the drain pipe 40 can not only prevent water or moisture from entering the protective cover 10 through the drain pipe 40, but also provide an end point for one end of the connecting rope 42 to ensure that both the upper and lower end faces of the second sealing cover 20 are stressed.

[0047] As Figure 2 、 Figure 4 、 Figure 6 and Figure 9 As shown in, a conductive sliding plate 30 is slidably disposed in the first port 17. An insertion piece 29 is connected to the end face of the conductive sliding plate 30 close to the sealing end cover 27. Second rectangular openings 47 are formed on the end face of the first port 17 on both sides of the conductive sliding plate 30. A first sealing sliding plate 23 is slidably disposed outside the second rectangular openings 47, and the first sealing sliding plate 23 is connected to the conductive sliding plate 30.

[0048] Anti-slip grooves are provided on the outside of the first sealing sliding plate 23. Workers can control the movement of the insertion piece 29 by pushing the first sealing sliding plate 23 to move. In this relationship, when the insertion piece 29 moves completely outwards, the first sealing sliding plate 23 can also seal the second rectangular openings 47 to ensure the waterproof effect.

[0049] As Figure 2 、 Figure 4 and Figure 5 As shown in, first rectangular openings 46 are provided on both the upper and lower sides of the socket 26 on the end face of the second port 18. A bent connecting plate 43 that abuts against the inner end face of the socket 26 is slidably disposed in the first rectangular openings 46. A second sealing sliding plate 24 is connected to the outside of the bent connecting plate 43 on the end face of the second port 18.

[0050] When the wire 34 is completely wound up, the socket 26 will be in the second port 18. At this time, by pushing the second sealing sliding plate 24, the bent connecting plate 43 can be driven to move. The bent connecting plate 43 will move outwards against the inner end face of the socket 26, so as to push the socket 26 outwards.

[0051] As Figure 1 、 Figure 4 and Figure 6As shown in the figure, a rotating shaft 35 is provided at the center of the winding cylinder 36. On the upper end face of the rotating shaft 35, a rotating disk 12 is connected and arranged on the end face of the first housing 11. On the end face of the rotating disk 12, a fixed cylinder 13 is provided. A fixed rod 14 is slidably arranged in the fixed cylinder 13. Below the fixed rod 14, a plurality of connection holes 45 are evenly arranged along the circumferential direction on the end face of the first housing 11.

[0052] The fixed rod 14 slides downward and is inserted into the connection hole 45, so as to fix the rotating disk 12, making the rotating shaft 35 and the winding cylinder 36 unable to rotate, thereby fixing the winding of the wire 34.

[0053] As Figure 1 shown, at the four corners of the end faces of the first housing 11 and the second housing 25, fixing holes 15 for mutual fixation are provided.

[0054] The connection between the first housing 11 and the second housing 25 can be fixed by screwing screws into the respective fixing holes 15.

[0055] In this embodiment, when power needs to be connected, the staff can open the first sealing cover 19 outward, so that the end face of the sealing end cover 27 is opened. Then, the staff pushes the first sealing slide plate 23 outward, thereby pushing the conductive slide plate 30 arranged between the first sealing slide plates 23 outward, and then pushing the insert piece 29 arranged on the end face of the conductive slide plate 30 outward, so that the insert piece 29 can be inserted into an external power supply. During the insertion process, the convex ring block arranged on the end face of the sealing end cover 27 will abut against the end face of the external power supply, thereby forming a seal outside the insert piece 29, so that the insert piece 29 can avoid being affected by water stains and dirt when connected to the external power supply.

[0056] After the insert piece 29 is connected or just pushed outwards, the staff can pull out the sealing plug 41 outward, so that the second sealing cover 20 can be opened outside the sealing frame 28. Then, the staff can push the second sealing slide plate 24 outward, thereby driving the bent connecting plate 43 at one end of the second sealing slide plate 24 outward, so that the bent connecting plate 43 abuts against the end face of the socket 26 and pushes the socket 26 outward.

[0057] At this time, the staff can pull the fixing rod 14 upward to make the fixing rod 14 leave the connecting hole 45. At this time, the staff can pull the socket 26 and the wire 34 outward. During this process, the wire winding cylinder 36, the rotating shaft 35 and the rotating disc 12 will all rotate to a certain extent due to the movement of the wire 34, so that the wire 34 can be smoothly pulled out. When the length of the wire 34 pulled out meets the usage requirements, the staff can press the fixing rod 14 downward nearby to make the fixing rod 14 insert into the connecting hole 45, so as to fix the length of the wire 34. At this time, the staff can perform the power-on process.

[0058] After the power-on is completed, the fixing rod 14 moves upward. Then the staff can hold the fixing cylinder 13 and rotate it, thereby driving the rotating disc 12 and the rotating shaft 35 at the bottom of the rotating disc 12 to rotate, thereby driving the wire winding cylinder 36 on the outer cylindrical surface of the rotating shaft 35 to rotate, so as to pull the wire 34 and the socket 26 inward for winding.

[0059] During the process of the wire 34 winding inward, its outer cylindrical surface will first contact with multiple dial rods 38. The multiple dial rods 38 will vibrate to a certain extent due to the movement of the wire 34, cooperating with the elastic inclined plate 37, so as to scrape off most of the dirt on the outer cylindrical surface of the wire 34, avoiding large-particle dirt moving to the scraping ring 39 and avoiding blockage. During this process, the vibration of the dial rod 38 will also cause the wire 34 to vibrate to a certain extent, so as to shake off some of the water stains, and then discharge them outward through the liquid discharge hole 44 to the collection cylinder 48 for collection; when the wire 34 passes through the elastic inclined plate 37, it will move to the scraping ring 39. The multiple scraping rings 39 will perform multiple wrapping-type scraping of the water stains and dirt on the wire 34, which can effectively prevent the water stains and dirt from entering the dust removal cylinder 33. Each piece of water stain and dirt scraped off by the scraping ring 39 will be discharged outward through the liquid discharge hole 44, and then collected by the collection cylinder 48 and discharged outward through the liquid discharge pipe 40.

[0060] When all the wires 34 and the sockets 26 enter the second port 18, the staff can seal the sealing frame 28 and the liquid discharge pipe 40. Then, after sliding the insertion piece 29 inward, the sealing end cover 27 can be sealed, so that the whole device is in a sealed state for easy storage.

[0061] Embodiment 2:

[0062] Such as Figure 4 、 Figure 5 and Figure 8As shown, a waterproof extension cord structure, the dust removal and moisture-proof component further includes a plurality of chutes 31 provided on the inner walls of the first housing 11 and the second housing 25. An adsorption plate 32 is slidably provided in each chute 31. A gasket 16 is connected to the outer end face of the adsorption plate 32 and each corner of the first housing 11 and the second housing 25. The gasket 16 can perform sealing and protection treatment on the opening of the chute 31.

[0063] Each chute 31 will form an opening on the end faces of the first housing 11 and the second housing 25, facilitating the adsorption plate 32 to slide into the chute 31, so that the adsorption plate 32 can be replaced after long-term use. The adsorption plate 32 can adsorb moisture inside the protective cover 10 to ensure that the inside of the protective cover 10 is always kept dry. The gasket 16 connected to the outside of the adsorption plate 32 is made of elastic moisture-proof rubber material. After the adsorption plate 32 completely enters the protective cover 10, the gasket 16 will wrap around and abut against the outside of the first housing 11 or the second housing 25. On the one hand, it can seal the chute 31, and on the other hand, it can protect each corner of the first housing 11 and the second housing 25, protecting the corners when the first housing 11 and the second housing 25 fall and collide, reducing the possibility of damage to the protective cover 10.

[0064] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in names as a way to distinguish components, but use the difference in functions of components as the criterion for distinction. As used throughout the specification and claims, the term "comprising" is an open-ended term and should be interpreted as "including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0065] It should be noted that the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a commodity or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such commodity or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the commodity or system including the said element.

[0066] The foregoing description illustrates and describes several preferred embodiments of the present application. However, as previously mentioned, it should be understood that the present application is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be changed within the scope of the application concept described herein through the above teachings or the technology or knowledge in the relevant field. Any changes and variations made by those skilled in the art without departing from the spirit and scope of the present application shall fall within the protection scope of the appended claims of the present application.

Claims

1. A waterproof extension cord structure, comprising a protective cover (10) formed by fixedly connecting a first housing (11) and a second housing (25), characterized in that, A wire winding drum (36) is arranged inside the protective cover (10), a conducting wire (34) is wound around the wire winding drum (36), a first port (17) is arranged at one end of the protective cover (10), two insertion pieces (29) are slidably arranged inside the first port (17), a second port (18) is arranged on the other end face of the protective cover (10), a socket (26) is slidably arranged inside the second port (18), a sealing component is arranged outside the first port (17) and the second port (18), and a dust removal and moisture-proof component is arranged inside the second port (18) on one side of the socket (26). The dust removal and moisture-proof component includes a dust removal cylinder (33) arranged outside the conducting wire (34), a plurality of scraping rings (39) are arranged inside the dust removal cylinder (33), a plurality of elastic inclined plates (37) are arranged on the end face of the dust removal cylinder (33) on one side of the scraping ring (39), and a plurality of shifting rods (38) are arranged on the end face of the elastic inclined plate (37).

2. The waterproof extension cord structure according to claim 1, characterized in that The sealing component includes a sealing end cover (27) arranged at the first port (17), and a first sealing cover (19) is arranged outside the sealing end cover (27).

3. A waterproof extension cord structure according to claim 2, wherein, The sealing component further includes a sealing frame (28) arranged on the end face of the second port (18), and a second sealing cover (20) is arranged outside the sealing frame (28).

4. A waterproof extension cord structure according to claim 1, characterized in that, A rotating shaft (35) is arranged at the center of the wire winding drum (36), a rotating disc (12) is connected and arranged on the end face of the first housing (11) at the upper end face of the rotating shaft (35), a fixed cylinder (13) is arranged on the end face of the rotating disc (12), a fixed rod (14) is slidably arranged inside the fixed cylinder (13), and a plurality of connecting holes (45) are arranged on the end face of the first housing (11) below the fixed rod (14).

5. The waterproof extension cord structure according to claim 1, characterized in that, The dust removal and moisture-proof component further includes a plurality of liquid discharge holes (44) arranged on the outer circumferential surface of the bottom of the dust removal cylinder (33), a collecting cylinder (48) is arranged inside the second port (18) outside the liquid discharge holes (44), a liquid discharge pipe (40) is communicated and arranged on the outer circumferential surface of the bottom of the collecting cylinder (48), and one end of the bottom of the liquid discharge pipe (40) is arranged on the end face of the second port (18).

6. The waterproof extension cord structure according to claim 3, characterized in that, The sealing component further includes a sealing plug (41) arranged in a sealing fit with the bottom inside the liquid discharge pipe (40), one end of a connecting rope (42) is connected and arranged on the bottom end face of the sealing plug (41), and the other end of the connecting rope (42) is connected and arranged on the end face of the second sealing cover (20).

7. A waterproof extension cord structure according to claim 5, characterized in that, The dust removal and moisture-proof component further includes a plurality of sliding grooves (31) arranged on the inner walls of the first housing (11) and the second housing (25), an adsorption plate (32) is arranged inside each sliding groove (31), and a cushion pad (16) is connected and arranged on the outer end face of the adsorption plate (32).

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