A waterproof plug and a waterproof light string having the same

Abstract

The present invention discloses a waterproof plug and a waterproof light string having the waterproof plug. The waterproof plug comprises a mounting frame and a first conductive terminal, a second conductive terminal, a fuse and a fuse cover installed in the mounting frame, the fuse is electrically connected to the second conductive terminal, a mounting groove for exposing the fuse is provided on the surface of the mounting frame, the fuse cover is slidably installed in the mounting groove to close or expose the fuse, and the waterproof plug also comprises a shell covering the mounting frame, a window for sliding operation of the fuse cover is provided on the surface of the shell corresponding to the mounting groove, and a waterproof cover is installed in the window. Therefore, the fuse cover is covered on the mounting groove, and the waterproof cover is further covered on the fuse cover, providing multiple waterproof protections. The plug has a simple and scientific structure, good sealing performance, and strong water blocking ability, and at the same time helps to improve the overall waterproof performance and working safety of the light string, and improves the safe working life of the light string.

Description

Technical Field

[0001] The invention relates to the field of power plugs, and in particular to a waterproof plug and a waterproof lamp string having the waterproof plug. Background Art

[0002] Typically, outdoor light strings, such as LED Christmas light strings, include multiple groups of light string units, each of which includes a power cord, multiple lamp holders arranged on the power cord and electrically connected to the power cord, and a light bulb installed on the lamp holder. Matching plugs and sockets are respectively installed at both ends of the power cord, and multiple groups of light string units are electrically connected through the plug-in cooperation of the plug and the socket. A power plug with a replaceable fuse is a commonly used plug in outdoor light strings. A fuse is installed inside the plug, which can cut off the power supply in time when an electrical appliance has an overcurrent, thereby protecting the electrical appliance and personal safety. Outdoor light strings are prone to leakage in rainy or humid environments outdoors. In order to prevent water from seeping into the fuse installation slot, a cover plate is provided at the opening of the fuse installation slot. However, gaps are easily formed at the junction of the cover plate and the socket housing, and the sealing is poor. Water infiltration cannot be avoided when used outdoors, which not only affects the service life of the light string, but also causes danger.

[0003] In order to solve the above problems, the present invention provides a strong, waterproof, and leakage-proof waterproof plug and a waterproof light string having the waterproof plug. Summary of the invention

[0004] The object of the present invention is to provide a strong, waterproof and leakage-proof waterproof plug and a waterproof light string having the waterproof plug.

[0005] To achieve the above-mentioned purpose, the present invention provides a waterproof plug, comprising a mounting frame and a first conductive terminal, a second conductive terminal, a fuse and a fuse cover installed in the mounting frame, the fuse being electrically connected to the second conductive terminal, a mounting groove for exposing the fuse being provided on the surface of the mounting frame, the fuse cover being slidably installed in the mounting groove to close or expose the fuse, the waterproof plug also comprising a shell covering the mounting frame, a window for slidingly operating the fuse cover being provided on the surface of the shell corresponding to the mounting groove, and the waterproof cover being installed in the window.

[0006] Compared with the prior art, the waterproof plug of the present invention includes a mounting frame and a first conductive terminal, a second conductive terminal, a fuse and a fuse cover installed in the mounting frame, the fuse is electrically connected to the second conductive terminal, a mounting groove for exposing the fuse is provided on the surface of the mounting frame, the fuse cover is slidably installed in the mounting groove to close or expose the fuse, and the waterproof plug also includes a shell covering the mounting frame, a window for sliding operation of the fuse cover is provided on the surface of the shell corresponding to the mounting groove, and a waterproof cover is installed in the window. Therefore, the fuse cover is covered on the mounting groove, and the waterproof cover is further covered on the fuse cover, providing multiple waterproof protections. The plug has a simple and scientific structure, good sealing, and strong water blocking ability. At the same time, it helps to improve the overall waterproof performance and working safety of the light string, and improves the safe working life of the light string.

[0007] Specifically, one end of the first conductive terminal is a plug-in end extending out of the mounting frame, and the other end is a welding end extending out of the mounting frame. The second conductive terminal includes a plug-in portion and a welding portion that are separated and extend out of the mounting frame respectively. The fuse is electrically connected to the plug-in portion and the welding portion of the second conductive terminal.

[0008] Specifically, the waterproof cover is connected to the housing through a connecting belt.

[0009] Specifically, the waterproof cover is flexibly connected to the housing and is integrally formed with the housing.

[0010] Specifically, a waterproof platform is protruded from the surface of the shell along the window.

[0011] Specifically, the top surface of the waterproof cover extends outward to form a step-shaped eaves portion, and the eaves portion covers the waterproof platform.

[0012] Specifically, a pulling portion for pulling the waterproof cover protrudes upward from the top surface of the waterproof cover.

[0013] Specifically, the front end of the shell surface circumferentially extends out of the boss, and the pulling portion and the boss are butted against each other to form a closed blocking ring.

[0014] Specifically, a moving groove for the fuse cover to slide is provided on the side wall of the installation groove, and the fuse cover is narrowed along the direction of being inserted into the moving groove.

[0015] Specifically, the fuse cover comprises a toggle portion, a first plug-in portion and a second plug-in portion, the width of the first plug-in portion is greater than the width of the second plug-in portion, and the length of the movable groove is equal to the length of the first plug-in portion.

[0016] Specifically, the first plug-in portion and the second plug-in portion are transitionally connected via an inclined portion, and a shielding portion protrudes from the side wall of the installation groove, and the shielding portion is located below the second plug-in portion.

[0017] The present invention also provides a waterproof light string, comprising a power cord, a plurality of lamp holders electrically connected to the power cord, a plurality of bulbs mounted on the plurality of lamp holders and the above-mentioned waterproof plug, wherein the plurality of lamp holders are arranged at intervals on the power cord, and the first end of the power cord is connected to the waterproof plug.

[0018] Specifically, the tail end of the power cord is connected to a waterproof socket with a waterproof socket cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the waterproof plug of the present invention in a state where the waterproof cover is put on.

[0020] Figure 2 It is a three-dimensional diagram of the waterproof plug of the present invention with the waterproof cover opened.

[0021] Figure 3 yes Figure 1 An exploded view of the waterproof plug is shown.

[0022] Figure 4 It is a structural schematic diagram of an embodiment of a mounting frame body.

[0023] Figure 5 This is a connection diagram of polarity terminals, non-polarity terminals, and fuses.

[0024] Figure 6 It is a structural schematic diagram in which the fuse cover is completely covered on the installation groove.

[0025] Figure 7 The invention is a structural schematic diagram in which the fuse cover part is covered on the installation groove.

[0026] Figure 8 It is a schematic diagram of the structure of the cover body of the mounting frame and the fuse cover in the disassembled state.

[0027] Fig. 9 It is a three-dimensional diagram of an embodiment of the waterproof light string of the present invention.

[0028] Fig.10 It is a schematic diagram of the socket structure.

[0029] Fig.11 yes Fig.10 An exploded view of the socket is shown.

[0030] Explanation of symbols

[0031] Waterproof plug 10; housing 1; waterproof cover 11; window 12; connecting belt 13; waterproof platform 14; eaves 15; pulling part 16; boss 17; blocking ring 18; mounting frame 2; mounting frame body 21; plug hole 211; welding hole 212; partition 213; accommodating groove 214; positioning lever 215; cover body 22; mounting groove 221; moving groove 222; shielding part 223; fixing part 224; first conductive terminal 3; plug end 3 1; welding end 32; second conductive terminal 4; plug-in portion 41; welding portion 42; first connection slot 43; second connection slot 44; fuse 5; fuse cover 51; toggle portion 511; first plug-in portion 512; second plug-in portion 513; inclined portion 514; waterproof light string 100; power cord 6; connecting frame 61; waterproof socket 7; waterproof socket cover 71; fixing frame 72; conductive clip 73; socket housing 74; lamp holder 8; bulb 9 DETAILED DESCRIPTION

[0032] In order to explain the technical content and structural features of the present invention in detail, further description will be given below in combination with the implementation modes and the accompanying drawings.

[0033] like Figure 1-3 The present invention provides a waterproof plug 10 including a housing 1, a mounting frame 2 enclosed in the housing 1, and a first conductive terminal 3, a second conductive terminal 4, a fuse 5 and a fuse cover 51 installed in the mounting frame 2. The mounting frame 2 includes a mounting frame body 21 and a cover 22 installed on the mounting frame body 21. One end of the first conductive terminal 3 is a plug-in end 31 extending out of the mounting frame body 21, and the other end is a welding end 32 extending out of the mounting frame body 21. The second conductive terminal 4 includes a plug-in portion 41 and a welding portion 42 that are separated and extend out of the mounting frame body 21, respectively. The fuse 5 is electrically connected to the plug-in portion 41 and the welding portion 42 of the second conductive terminal 4. The cover 22 is provided with a mounting groove 221 for exposing the fuse 5, and the fuse cover 51 is slidably installed in the mounting groove 221 to close or expose the fuse 5. A window 12 for sliding operation of the fuse cover 51 is provided on the surface of the housing 1 corresponding to the mounting groove 221, and a waterproof cover 11 is installed in the window 12.

[0034] Of course, it is understandable that the mounting frame body 21 and the cover body 22 can be detachable or an integral structure. Figure 3-4The front side wall of the mounting frame body 21 is provided with a plug hole 211 for the plug end 31 of the first conductive terminal 3 and the plug part 41 of the second conductive terminal 4 to extend out, and the rear side wall of the mounting frame body 21 is provided with a welding hole 212 for the welding end 32 of the first conductive terminal 3 and the welding part 42 of the second conductive terminal 4 to extend out. A partition 213 for isolating the first conductive terminal 3 and the second conductive terminal 4 is provided in the mounting frame body 21, and a receiving groove 214 for installing the fuse 5 is provided in the mounting frame body 21. Preferably, positioning levers 215 protrude from the left and right side walls of the receiving groove 214, and the positioning levers 215 fix the fuse 5 from the side. The fuse 5 is installed in the receiving groove 214 and connects the plug part 41 and the welding part 42 of the second conductive terminal 4.

[0035] refer to Figure 3 and Figure 5 , the plug-in end 31 of the first conductive terminal 3 extends out of the mounting frame body 21 from the corresponding plug-in hole 211, and the welding end 32 extends out of the mounting frame body 21 from the corresponding welding hole 212 and connects to the power line 6. The rear end of the plug-in portion 41 of the second conductive terminal 4 has a U-shaped first connecting groove 43, the front end of the welding portion 42 is a U-shaped second connecting groove 44, and the rear end of the welding portion 42 is a clip connected to the power line 6. The two ends of the fuse 5 are respectively fixed in the U-shaped first connecting groove 43 and the second connecting groove 44. Of course, the shape of the first connecting groove 43 and the second connecting groove 44 is not limited to the U-shape, as long as they can be clamped and fixed to the fuse 5. More specifically, the rear end of the welding portion 42 and the welding end 32 are both copper clips, so as to be riveted to the conductor of the power line 6. When the cover body 22 is fixed to the mounting frame body 21, the clips are respectively fixed by the fixing parts 224 on the cover body 22.

[0036] Refer to Figure 1-3 The waterproof cover 11 is flexibly connected to the housing 1 through a connecting belt 13. Preferably, the waterproof cover 11 and the housing 1 are integrally formed by mold injection molding. Preferably, a waterproof platform 14 is protruded from the surface of the housing 1 along the window 12, and the waterproof platform 14 is provided to prevent the accumulated water on the housing 1 from seeping into the mounting groove 221 from the window 12. The top surface of the waterproof cover 11 extends outward to form a stepped eaves 15, and the eaves 15 covers the waterproof platform 14. The waterproof cover 11 is inserted in the window 12 and covers the fuse cover 51. More preferably, a pulling part 16 for pulling the waterproof cover 11 protrudes upward from the top surface of the waterproof cover 11, so as to open the waterproof cover 11 and replace the fuse 5. A boss 17 is circumferentially extended from the front end of the surface of the housing 1, and the pulling part 16 and the boss 17 are connected to form a closed blocking ring 18 to prevent the hand from touching the front end of the waterproof plug 10 when the waterproof plug 10 is used, thereby avoiding safety hazards.

[0037] like Figure 6-8, a moving groove 222 for the fuse cover 51 to slide is provided on the side wall of the installation groove 221, and the fuse cover 51 is narrowed along the direction of being inserted into the moving groove 222. Specifically, the fuse cover 51 includes a toggle portion 511, a first plug-in portion 512, and a second plug-in portion 513, the width of the first plug-in portion 512 is greater than the width of the second plug-in portion 513, and the length of the moving groove 222 is equal to the length of the first plug-in portion 512. Preferably, the first plug-in portion 512 and the second plug-in portion 513 are transitionally connected through an inclined portion 514, and a shielding portion 223 protrudes from the side wall of the installation groove 221, and the shielding portion 223 is located below the second plug-in portion 513. Therefore, the fuse cover 51 slides along the moving groove 222, and when the side wall of the inclined portion 514 contacts the end of the moving groove 222, it continues to be inserted along the installation groove 221 until the installation groove 221 is completely covered. This method facilitates the fuse 51 to be firmly inserted into the moving groove 222, and prevents the fuse cover 51 from accidentally sliding out. Since the shielding portion 223 protrudes from the side wall of the installation groove 221, when the fuse cover 51 completely covers the installation groove 221, the shielding portion 223 is located below the second plug-in portion 513, thereby preventing water from penetrating into the installation groove 221 from the outer edge of the fuse cover 51.

[0038] like Fig. 9 The present invention also provides a waterproof light string 100, comprising a power cord 6, a plurality of lamp holders 8 electrically connected to the power cord 6, a plurality of bulbs 9 respectively mounted on the plurality of lamp holders 8, and the aforementioned waterproof plug 10. The plurality of lamp holders 8 are arranged at intervals on the power cord 6, and the first and last ends of the power cord 6 are respectively connected to the waterproof plug 10 and the waterproof socket 7. Figure 9-11 The waterproof socket 7 has a waterproof socket cover 71 formed by injection molding, and the waterproof socket 7 has a fixing frame 72 and a conductive clip 73 inside. The conductive clip 73 is connected to the end of the power cord 6 and protrudes out of the fixing frame 72. Specifically, the outside of the fixing frame 72 is covered with a socket shell 74, and the socket shell 74 is formed integrally with the waterproof socket cover 71. Specifically, the lamp holder 8 is connected to the power cord 6 through the connecting frame 61, and a waterproof shell is formed on the outer wall of the connecting frame 61 by injection molding. Therefore, the waterproof light string 100 of the present invention has the characteristics of simple and convenient assembly, and the connection between the power cord 6 and the lamp holder 8 and the plugs and sockets at both ends of the power cord 6 have good waterproof performance, reducing the safety hazard of leakage.

[0039] In summary, the waterproof plug 10 of the present invention includes a mounting frame 2 and a first conductive terminal 3, a second conductive terminal 4, a fuse 5 and a fuse cover 51 installed in the mounting frame 2, the fuse 5 is electrically connected to the second conductive terminal 4, the mounting frame 2 is provided with a mounting groove 221 for exposing the fuse 5, the fuse cover 51 is slidably installed in the mounting groove 221 to close or expose the fuse 5, and the waterproof plug 10 also includes a shell 1 covering the mounting frame 2, the surface of the shell 1 is provided with a window 12 for sliding operation of the fuse cover 51 corresponding to the mounting groove 221, and the waterproof cover 11 is installed in the window 12. Therefore, the fuse cover 51 is covered on the mounting groove 221, and the waterproof cover 11 is further covered on the fuse cover 51, with multiple waterproof protection. The plug has a simple and scientific structure, good sealing, and strong water blocking ability. At the same time, it helps to improve the overall waterproof performance and working safety of the light string, and improves the safe working life of the light string.

[0040] The above disclosure is only a preferred embodiment of the present invention, which cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are all within the scope of the present invention.

Claims

1. A waterproof plug, characterized in that: The waterproof plug comprises a mounting frame, a first conductive terminal, a second conductive terminal, a fuse and a fuse cover installed in the mounting frame, wherein the fuse is electrically connected to the second conductive terminal, a mounting groove for exposing the fuse is provided on the surface of the mounting frame, and the fuse cover is slidably installed in the mounting groove to close or expose the fuse, and the waterproof plug also comprises a shell covering the mounting frame, a window for sliding operation of the fuse cover is provided on the surface of the shell corresponding to the mounting groove, and a waterproof cover is installed in the window; a waterproof platform is protruded from the surface of the shell along the window; the top surface of the waterproof cover extends outward to form a stepped eaves, and the eaves covers the waterproof platform.

2. The waterproof plug according to claim 1, characterized in that: One end of the first conductive terminal is a plug-in end extending out of the mounting frame, and the other end is a welding end extending out of the mounting frame. The second conductive terminal includes a plug-in portion and a welding portion that are separated and extend out of the mounting frame respectively. The fuse is electrically connected to the plug-in portion and the welding portion of the second conductive terminal.

3. The waterproof plug according to claim 1, characterized in that: The waterproof cover is connected to the housing via a connecting belt.

4. The waterproof plug according to claim 1, characterized in that: The waterproof cover is flexibly connected to the housing and is integrally formed with the housing.

5. The waterproof plug according to claim 1, characterized in that: A pulling portion for pulling the waterproof cover protrudes upward from the top surface of the waterproof cover.

6. The waterproof plug according to claim 5, characterized in that: A boss is circumferentially extended from the front end of the shell surface, and the pulling portion is butted against the boss to form a closed blocking ring.

7. The waterproof plug according to claim 1, characterized in that: A moving groove for sliding the fuse cover is formed on the side wall of the installation groove, and the fuse cover is narrowed along the direction of being inserted into the moving groove.

8. The waterproof plug according to claim 7, characterized in that: The safety tube cover comprises a toggle portion, a first plug-in portion and a second plug-in portion, the width of the first plug-in portion is greater than the width of the second plug-in portion, and the length of the movable groove is equal to the length of the first plug-in portion.

9. The waterproof plug according to claim 8, characterized in that: The first plug-in portion and the second plug-in portion are transitionally connected via an inclined portion, and a shielding portion protrudes from the side wall of the installation groove, and the shielding portion is located below the second plug-in portion.

10. A waterproof light string, characterized in that: It comprises a power cord, a plurality of lamp holders electrically connected to the power cord, a plurality of bulbs mounted on the plurality of lamp holders, and a waterproof plug according to any one of claims 1-9, wherein the plurality of lamp holders are arranged at intervals on the power cord, and the head end of the power cord is connected to the waterproof plug.

11. The waterproof light string according to claim 10, characterized in that: The tail end of the power line is connected to a waterproof socket with a waterproof socket cover.

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