Extension socket

Abstract

The utility model provides an extension socket, which relates to the technical field of electrical equipment and comprises an extension socket main body, a power plug and a power line, the extension socket main body comprises a main shell and a power socket arranged in the main shell, and the power plug comprises a plug shell and a telescopic storage mechanism arranged in the plug shell. The power line comprises a first end and a second end opposite to the first end, the first end is electrically connected with a pin of the power plug, the second end penetrates out of the plug shell and extends into the main shell to be electrically connected with the power socket, and the part between the first end and the second end of the power line can be wound and stored in the telescopic storage mechanism. The telescopic storage mechanism for storing the power line is arranged in the plug shell of the power plug, so that the installation space of the extension socket main body is saved.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a power strip. Background Technology

[0002] In the current market, to enhance user experience, some power strips have incorporated power cord storage features. This feature is achieved by building a dedicated storage structure inside the power strip, aiming to organize and store power cords, thereby improving the power strip's neatness and overall aesthetics. However, this design introduces space-consuming issues, particularly impacting the utilization of the power strip's internal space. Specifically, the power cord storage structure occupies a portion of the power strip's internal space, directly limiting the space available for charging ports. With the power strip's overall volume remaining constant, the number of charging ports that can be installed is restricted due to the space occupied by the power cord storage structure. Utility Model Content

[0003] The purpose of this utility model is to provide a power strip that can retract and store the power cord inside the power plug, thereby saving installation space for the power strip body.

[0004] To achieve the above objectives, the technical solution of this utility model embodiment is as follows:

[0005] A power strip, comprising:

[0006] The power strip body includes a main housing and a power socket disposed on the main housing;

[0007] A power plug includes a plug housing with a storage cavity, a telescopic storage mechanism disposed within the storage cavity, and prongs connected to the plug housing;

[0008] The power cord includes a first end and a second end opposite to the first end. The first end is electrically connected to the pins inside the plug housing, and the second end extends out of the plug housing and into the main housing to be electrically connected to the power socket. The portion of the power cord between the first end and the second end can be wound and stored in the telescopic storage mechanism.

[0009] Furthermore,

[0010] The telescopic storage mechanism includes a reel that is rotatably disposed within the storage cavity. The power cord can be wound around the reel, and the reel and the ends of the plug located within the storage cavity are spaced apart.

[0011] Furthermore,

[0012] The telescopic storage mechanism includes an insulating housing disposed between the cable reel and the plug, and the insulating housing is fixed relative to the plug housing.

[0013] Furthermore,

[0014] The telescopic storage mechanism also includes a mounting housing that engages with the insulating housing. The reel is rotatably disposed within the cavity formed by the mounting housing and the insulating housing. The mounting housing has a fixing part that is detachably connected to the plug housing.

[0015] Furthermore,

[0016] The telescopic storage mechanism includes a fixed shaft disposed between the insulating housing and the mounting housing; the cable reel is rotatably sleeved on the fixed shaft, and the rotation axis of the cable reel is parallel to the insertion direction of the pin.

[0017] Furthermore,

[0018] The telescopic storage mechanism further includes a first circuit board and a second circuit board. The first circuit board is connected to the reel and has a live wire contact, a neutral wire contact, and a ground wire contact. The live wire contact, neutral wire contact, and ground wire contact are connected to the live wire, neutral wire, and ground wire in the power cord, respectively. The second circuit board is connected to the insulating shell and has a live wire contact ring that abuts against the live wire contact, a neutral wire contact ring that abuts against the neutral wire contact, and a ground wire contact ring that abuts against the ground wire contact. The live wire contact ring, the neutral wire contact ring, and the ground wire contact ring are electrically connected to the live wire pin, the neutral wire pin, and the ground wire pin of the power plug, respectively.

[0019] Furthermore,

[0020] The live wire contact ring, neutral wire contact ring, and ground wire contact ring are arranged concentrically and at intervals. The ground wire contact ring is located between the live wire contact ring and the neutral wire contact ring, and the interval between two adjacent contact rings is greater than 2mm.

[0021] Furthermore,

[0022] The storage cavity is equipped with a third circuit board, and the live wire pin, neutral wire pin, and ground wire pin are all located on the third circuit board. The third circuit board is electrically connected to the second circuit board through a pin header connector or wires.

[0023] Furthermore,

[0024] The second end of the power cord is provided with a resisting part, which is installed in a through hole for inserting the power cord into the main housing.

[0025] Furthermore,

[0026] The main housing is equipped with clamping components;

[0027] The clamping member is used to clamp the power cord located inside the main housing;

[0028] or / and

[0029] The second end of the power cord is provided with a resistance part, and the clamping member is used to clamp the resistance part.

[0030] Compared with the prior art, the embodiments of this utility model have at least the following technical effects:

[0031] This utility model embodiment includes a power strip body, a power plug, and a power cord. The power strip body includes a main housing and a power socket disposed within the main housing. The power plug includes a plug housing and a telescopic storage mechanism disposed within the plug housing. The power cord includes a first end and a second end opposite to the first end. The first end is electrically connected to the pins of the power plug, and the second end extends out of the plug housing and into the main housing to be electrically connected to the power socket. The portion of the power cord between the first end and the second end can be wound and stored in the telescopic storage mechanism. The telescopic storage mechanism for storing the power cord is disposed within the plug housing of the power plug to save installation space for the power strip body. Attached Figure Description

[0032] Figure 1 This is an overall schematic diagram of the power strip in one embodiment;

[0033] Figure 2 This is an exploded view of the power strip in one embodiment;

[0034] Figure 3 This is an exploded view of the telescopic storage mechanism in one embodiment;

[0035] Figure 4 This is a schematic diagram of a positioning locking structure in one embodiment;

[0036] Figure 5 This is a schematic diagram of the second circuit board in one embodiment;

[0037] Figure 6 This is a schematic diagram showing the connection between the third circuit board and the second circuit board in one embodiment;

[0038] Figure 7 This is a schematic diagram of the clamping element in one embodiment.

[0039] Explanation of icon numbers:

[0040] 10. Power strip body; 11. Main housing; 110. Through hole; 12. Power socket; 13. Clamping device;

[0041] 20. Power plug; 21. Plug housing; 210. Storage cavity; 22. Telescopic storage mechanism; 220. Fixed shaft; 2200. Slide groove; 2201. Positioning groove; 221. Cable reel; 2210. Sleeve; 2211. Limiting groove; 2212. Positioning ball; 222. Torsion spring;

[0042] 30. Power cord; 31. Resistance section;

[0043] 40. First circuit board; 41. Electrical connector;

[0044] 50. Second circuit board; 51. Live wire contact ring; 52. Neutral wire contact ring; 53. Ground wire contact ring;

[0045] 60. Install the housing;

[0046] 70. Insulating housing;

[0047] 80. Third circuit board; 81. Live wire pin; 82. Neutral wire pin; 83. Ground wire pin. Detailed Implementation

[0048] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in this specification of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. In the following description, the expression "some embodiments" refers to a subset of all possible embodiments; however, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0049] It should also be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0050] like Figure 1-6As shown, in one embodiment of the utility model, a power strip includes a power strip body 10, a power plug 20, and a power cord 30. The power strip body 10 includes a main housing 11 and a power socket 12 disposed within the main housing 11. The power plug 20 includes a plug housing 21 with a storage cavity 210, a telescopic storage mechanism 22 disposed within the storage cavity 210, and prongs connected to the plug housing 21. The power cord 30 includes a first end and a second end opposite to the first end. The first end is electrically connected to the prongs within the plug housing 21, and the second end extends out of the plug housing 21 and into the main housing 11, where it is electrically connected to the power socket 12. The portion of the power cord 30 between the first end and the second end can be wound and stored in the telescopic storage mechanism 22. In the above technical solution of this application, the telescopic storage mechanism 22 for storing the power cord 30 is disposed within the plug housing 21 of the power plug 20 to save installation space of the power strip body 10.

[0051] like Figure 1-6 As shown, in one embodiment of the utility model, the telescopic storage mechanism 22 includes a reel 221 rotatably disposed within the storage cavity 210. The power cord 30 can be wound around the reel 221, and the reel 221 and the ends of the plug located within the storage cavity (210) are spaced apart. This spacing effectively prevents the wound power cord from contacting the plug, thus preventing the plug from scratching the power cord sheath and causing leakage or short circuits. The preferred spacing distance is greater than or equal to 3mm.

[0052] like Figure 1-6 As shown, in one embodiment of the utility model, the telescopic storage mechanism 22 includes an insulating housing 70 disposed between the cable reel 221 and the plug pin, and the insulating housing 70 is fixed relative to the plug housing 21. Safety requirements can be met by increasing the insulating housing 70; however, the thickness of the insulating housing 70 can be reduced while still meeting safety requirements, for example, using an insulating housing 70 with a thickness of 1 mm.

[0053] like Figure 1-6 As shown, in one embodiment of the utility model, the telescopic storage mechanism 22 further includes a mounting housing 60 that engages with the insulating housing 70. The coil 221 is rotatably disposed within the cavity formed by the mounting housing 60 and the insulating housing 70. The mounting housing 60 has a fixing part that is detachably connected to the plug housing 21. With the insulating housing 70 and the mounting housing 60 provided, the power cord can be installed between the two housings and then inserted into the plug housing 21, facilitating assembly and production.

[0054] like Figure 1-6As shown, in one embodiment of the utility model, the telescopic storage mechanism 22 includes a fixed shaft 220 disposed between the insulating housing 70 and the mounting housing 60. The cable reel 221 is rotatably sleeved on the fixed shaft 220, and the rotation axis of the cable reel 221 is parallel to the insertion direction of the plug pins. This design reduces the thickness of the plug housing 21, preventing it from protruding excessively from the wall surface when plugged into a wall socket, thus avoiding it from being easily knocked off.

[0055] like Figure 1-6 As shown, in one embodiment of the utility model, the telescopic storage mechanism 22 includes a fixed shaft 220, a coil 221, and a torsion spring 222 disposed within the storage cavity 210. The fixed shaft 220 is connected to the plug housing 21. The coil 221 is rotatably mounted on the fixed shaft 220. One end of the torsion spring 222 is connected to the plug housing 21, and the other end is fixed to the coil 221. In the above technical solution of this application, the coil 221 is rotatably mounted on the fixed shaft 220. When the power cord 30 is pulled outward from the plug housing 21, the coil 221 rotates relative to the fixed shaft 220 along the cord-out direction. At this time, the torsion spring 222 stores force. When the external force is removed, the coil 221 rotates along the cord-rewinding direction under the elastic force of the torsion spring 222, and the coil 221 winds up the power cord 30.

[0056] like Figure 1-6 As shown, in one embodiment of the utility model, a positioning locking structure is provided between the fixed shaft 220 and the winding reel 221. This positioning locking structure locks the winding reel 221 to a rotating position on the fixed shaft 220. With the help of the positioning locking structure, the rotation of the winding reel 221 along the winding direction is locked, keeping the power cord 30 in its current extended position. Controlling the extension length of the power cord 30 allows for easier management and maintenance, avoiding the confusion and safety hazards caused by an excessively long power cord 30. Furthermore, as... Figure 1-6 As shown, in one embodiment of the utility model, the positioning and locking structure includes a sleeve 2210, a slide groove 2200, and positioning balls 2212. The sleeve 2210 is disposed on the winding reel 221. A limiting groove 2211 is provided on the inner wall of the sleeve 2210 along its axial direction. The slide groove 2200 is disposed on the outer circumferential surface of the fixed shaft 220 and arranged circumferentially along the fixed shaft 220. A portion of the positioning balls 2212 is located in the limiting groove 2211, and another portion of the positioning balls 2212 is located in the slide groove 2200. The slide groove 2200 is also provided with a positioning groove 2201. When the positioning balls 2212 roll along the slide groove 2200 and are located in the positioning groove 2201, they lock the rotational stopping position of the winding reel 221 on the fixed shaft 220.

[0057] In the above technical solution of this application, the winding reel 221 rotates along the winding direction under the elastic force of the torsion spring 222. When the positioning ball 2212 moves to the positioning groove 2201, the positioning ball 2212 can prevent the winding reel 221 from rotating relative to the fixed shaft 220, locking the rotational stop position of the winding reel 221 on the fixed shaft 220, so that the power cord 30 remains at the current extension length.

[0058] like Figure 1-6 As shown, in one embodiment of the utility model, the telescopic storage mechanism 22 further includes a first circuit board 40 and a second circuit board 50. ， The first circuit board 40 is connected to the reel 221. The first circuit board 40 is provided with an electrical connector 41, which has a live wire contact, a neutral wire contact, and a ground wire contact. In other embodiments, the first circuit board 40 is directly provided with a live wire contact, a neutral wire contact, and a ground wire contact. The live wire contact, the neutral wire contact, and the ground wire contact are connected one-to-one with the live wire, neutral wire, and ground wire in the power cord 30. The second circuit board 50 is connected to the insulating shell (70). The second circuit board 50 has a live wire contact ring 51 that abuts against the live wire contact, a neutral wire contact ring 52 that abuts against the neutral wire contact, and a ground wire contact ring 53 that abuts against the ground wire contact. The live wire contact ring 51 is electrically connected to the live wire pin 81 of the power plug 20, the neutral wire contact ring 52 is electrically connected to the neutral wire pin 82 of the power plug 20, and the ground wire contact ring 53 is electrically connected to the ground wire pin 83 of the power plug 20. In the above-described technical solution of this application, during the rotation of the reel 221, the first circuit board 40 rotates accordingly. The first circuit board 40 is provided with a live wire contact, a neutral wire contact, and a ground wire contact. The second circuit board 50 has a live wire contact ring 51 that contacts the live wire contact, a neutral wire contact ring 52 that contacts the neutral wire contact, and a ground wire contact ring 53 that contacts the ground wire contact. During the rotation of the reel 221, the first circuit board 40 and the second circuit board 50 always maintain an electrical connection, that is, the power cord 30 and the pins provided on the power plug 20 always maintain an electrical connection.

[0059] like Figure 1-6 As shown, in one embodiment of the utility model, the live wire contact ring 51, neutral wire contact ring 52, and ground wire contact ring 53 are arranged concentrically and at intervals. The ground wire contact ring 53 is disposed between the live wire contact ring 51 and the neutral wire contact ring 52, thereby achieving electrical isolation between the conductive structures such as the live wire contact ring 51, neutral wire contact ring 52, and ground wire contact ring 53. Furthermore, as... Figure 1-6As shown, in one embodiment of the utility model, the spacing between two adjacent contact rings is greater than 2 mm. When transmitting high-voltage electricity, the spacing is greater than 2 mm, and there is sufficient electrical clearance between the conductive structures such as the live wire contact ring 51, the neutral wire contact ring 52, and the ground wire contact ring 53.

[0060] like Figure 1-6 As shown, in one embodiment of the utility model, a third circuit board 80 is disposed within the storage cavity 210. The live wire pin 81, neutral wire pin 82, and ground wire pin 83 are all disposed on the third circuit board 80. The third circuit board 80 is electrically connected to the second circuit board 50 via a pin header connector or wires. The three pins of the power plug 20 are centrally arranged on the third circuit board 80, and the third circuit board 80 is electrically connected to the second circuit board 50 via a pin header connector or wires, thereby improving the assembly efficiency of the power plug 20 and facilitating disassembly and maintenance.

[0061] like Figure 1-6 As shown, in one embodiment of the utility model, the second end of the power cord 30 is provided with a resistance part 31. The second end of the power cord 30 is connected to the power strip body 10. During daily use of the power strip, the connection point of the power cord 30 with the power strip body 10 may be pulled or twisted, which may cause damage or breakage of the wires at the connection point. The second end of the power cord 30 is provided with a resistance part 31. The resistance part 31 is installed in the through hole 110 for the power cord 30 to be inserted into the main housing 11. The resistance part 31 can improve the mechanical strength of this part by increasing the wall thickness or using a tougher material on the outer wall of the power cord 30, making it more resistant to the pressure caused by stretching and bending.

[0062] like Figure 1-7 As shown, in one embodiment of the utility model, a clamping member 13 is provided inside the main housing 11 to clamp the power cord 30 located inside the main housing 11. In this embodiment, a clamping member 13 is provided inside the main housing 11 to clamp a certain section of the power cord 30 located inside the main housing 11, fixing its relative position with the main housing 11. This prevents the power cord 30 from being frequently stretched during use, which could cause the connection between the power cord 30 and the power socket 12 to become loose, or wear down the outer sheath of the power cord 30. At the same time, it also serves to fix the internal core of the power cord 30, preventing the internal core of the power cord 30 from being pulled out of place, causing the cord to bulge and unable to retract into the telescopic storage mechanism 22.

[0063] In other embodiments, the user may also choose to have the clamping member 13 clamp a specific section of the power cord 30 located within the main housing 11 while clamping the resistance part 31, or the clamping member 13 may clamp the resistance part 31 alone (e.g., Figure 7As shown, both of the aforementioned clamping methods can clamp a certain section of the power cord 30, fixing its relative position to the main housing 11. This prevents the power cord 30 from being frequently stretched during use, which could cause the connection between the power cord 30 and the power socket 12 to become loose, or wear down the outer sheath of the power cord 30. At the same time, it also helps to fix the internal core of the power cord 30, preventing the internal core of the power cord 30 from being pulled out of place, causing the cord to bulge and unable to retract into the telescopic storage mechanism 22.

[0064] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model shall be determined by the protection scope of the claims.

Claims

1. A power strip, characterized in that, include: The power strip body (10) includes a main housing (11) and a power socket (12) disposed on the main housing (11); The power plug (20) includes a plug housing (21) having a storage cavity (210), a telescopic storage mechanism (22) disposed in the storage cavity (210), and pins connected to the plug housing (21); The power cord (30) includes a first end and a second end opposite to the first end. The first end is electrically connected to the pins inside the plug housing (21), and the second end extends out of the plug housing (21) and into the main housing (11) to be electrically connected to the power socket (12). The portion of the power cord (30) between the first end and the second end can be wound and stored in the telescopic storage mechanism (22).

2. The power strip according to claim 1, characterized in that, The telescopic storage mechanism (22) includes a reel (221) that is rotatably disposed in the storage cavity (210). The power cord (30) can be wound on the reel (221). The reel (221) and the end of the plug located in the storage cavity (210) are spaced apart.

3. The power strip according to claim 2, characterized in that, The telescopic storage mechanism (22) includes an insulating housing (70) disposed between the coil (221) and the plug, and the insulating housing (70) is fixed relative to the plug housing (21).

4. The power strip according to claim 3, characterized in that, The telescopic storage mechanism (22) also includes a mounting housing (60) that engages with the insulating housing (70). The winding reel (221) is rotatably disposed within the cavity formed by the mounting housing (60) and the insulating housing (70). The mounting housing (60) is provided with a fixing part that is detachably connected to the plug housing (21).

5. The power strip according to claim 4, characterized in that, The telescopic storage mechanism (22) includes a fixed shaft (220) disposed between the insulating housing (70) and the mounting housing (60); The reel (221) is rotatably mounted on the fixed shaft (220), and the rotation axis of the reel (221) is parallel to the insertion direction of the pin.

6. The power strip according to claim 3, characterized in that, The telescopic storage mechanism (22) also includes a first circuit board (40) and a second circuit board (50); The first circuit board (40) is connected to the reel (221). The first circuit board (40) is provided with a live wire contact, a neutral wire contact and a ground wire contact. The live wire contact, the neutral wire contact and the ground wire contact are connected to the live wire, the neutral wire and the ground wire in the power line (30) one by one. The second circuit board (50) is connected to the insulating housing (70). The second circuit board (50) has a live wire contact ring (51) that contacts the live wire contact, a neutral wire contact ring (52) that contacts the neutral wire contact, and a ground wire contact ring (53) that contacts the ground wire contact. The live wire contact ring (51), the neutral wire contact ring (52), and the ground wire contact ring (53) are electrically connected to the live wire pin (81), the neutral wire pin (82), and the ground wire pin (83) of the power plug (20), respectively.

7. The power strip according to claim 6, characterized in that, The live wire contact ring (51), neutral wire contact ring (52), and ground wire contact ring (53) are arranged concentrically and at intervals. The ground wire contact ring (53) is located between the live wire contact ring (51) and the neutral wire contact ring (52). The interval between two adjacent contact rings is greater than 2 mm.

8. The power strip according to claim 6, characterized in that, The storage cavity (210) is provided with a third circuit board (80), and the live wire pin (81), neutral wire pin (82), and ground wire pin (83) are all provided on the third circuit board (80). The third circuit board (80) and the second circuit board (50) are electrically connected through a pin header connector or wire.

9. The power strip according to claim 1, characterized in that, The second end of the power cord (30) is provided with a resistance part (31), which is installed in a through hole (110) for inserting the power cord (30) into the main housing (11).

10. The power strip according to any one of claims 1-9, characterized in that, The main housing (11) is provided with a clamping member (13); The clamping member (13) is used to clamp the power cord (30) located inside the main housing; or / and The second end of the power cord (30) is provided with a resistance part (31), and the clamping member (13) is used to clamp the resistance part (31).

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