Extension line socket

Abstract

The utility model relates to the technical field of electrical connection devices, in particular to an extension line socket. The extension cord socket comprises a socket main body, an extension cord, a winding piece and a control assembly. The control assembly comprises a normally-closed switch and an operation part, and the normally-closed switch is connected in series in a power supply circuit between the extension line and the socket main body. The operation part enables the normally-closed switch to be switched off when the winding piece is connected with the shell and enables the normally-closed switch to be switched on when the winding piece is separated from the shell. Therefore, only when the normally-closed switch is closed, the socket main body can conduct current, and the extension line socket can work normally. And if the normally closed switch is switched off, the socket main body cannot conduct the current. When the winding piece is connected with the shell, the operation part enables the normally-closed switch to be switched off. And when the winding piece is separated from the shell, the normally-closed switch is closed. The design not only solves the storage problem of the extension line, but also can prevent a user from using the socket when the extension line is coiled, thereby improving the power utilization safety.

Description

Technical Field

[0001] This application relates to the field of electrical connection device technology, and more particularly to an extension cord socket. Background Technology

[0002] Extension cord sockets are widely used in homes, offices, and industrial environments, primarily to address issues of insufficient power outlets or limited distance. They are typically used with an extension cord of 1.5 to 10 meters to overcome the distance limitations of fixed sockets.

[0003] Existing extension cord sockets are mainly divided into two categories: those without a cord winder and those with a cord winder. Extension cord sockets without a cord winder tend to have tangled extension cords when not in use, making them inconvenient to store. Extension cord sockets with a cord winder allow users to organize the extension cord and avoid tangling. However, in actual use, it has been found that users may use the socket with the extension cord already coiled up. This can lead to eddy currents, causing the socket temperature to rise abnormally and potentially causing a fire. Utility Model Content

[0004] This application provides an extension cord socket designed to solve the problem of extension cord storage and prevent the use of the socket when the extension cord is coiled up, thereby improving the user's electrical safety.

[0005] The technical solution of this application is as follows:

[0006] This application provides an extension cord socket, including a socket body, an extension cord, a winding component, and a control assembly: the socket body includes a housing and a socket assembly, the housing having a cable inlet, and the socket assembly located inside the housing. The extension cord supplies power to the socket assembly through the cable inlet. The winding component is located outside the housing and is used to house the extension cord, and the winding component is detachably connected to the housing.

[0007] The control assembly includes a normally closed switch and an operating unit. The normally closed switch is connected in series in the power supply circuit between the extension cable and the socket assembly. The operating unit is configured to open the normally closed switch when the winding member is connected to the housing, and to close the normally closed switch when the winding member is separated from the housing.

[0008] Based on the extension cord socket provided in this application, the normally closed switch is connected in the power supply circuit of the extension cord and the socket assembly. The socket assembly can only conduct current, and the extension cord socket can only function normally, when the normally closed switch is closed. If the normally closed switch is open, the socket assembly cannot conduct current. The control assembly also has an operating unit that opens the normally closed switch when the winding component is connected to the housing. When the winding component is separated from the housing, the normally closed switch closes. Therefore, the normally closed switch only closes when the winding component is detached from the housing, allowing the extension cord socket to operate. When the winding component is connected to the housing, the normally closed switch is open, and the extension cord socket cannot function normally. With this design, when the extension cord socket is not in operation, the winding component is connected to the housing, and the extension cord can be coiled and stored using the winding component. When the extension cord socket is in operation, the winding component needs to be removed from the housing, and the extension cord is no longer coiled, reducing the fire risk caused by eddy current effects and improving safety.

[0009] In one possible design, a switch mounting slot is provided inside the housing, through which the normally closed switch is positioned and installed.

[0010] The normally closed switch includes a control element for controlling the state of the normally closed switch, and the housing also has an opening that exposes the control element;

[0011] The operating part is fixedly connected to the winding component. When the winding component is connected to the housing, the operating part applies force to the control element through the opening to disconnect the normally closed switch.

[0012] Based on the extension cord socket provided in this embodiment, a switch mounting slot is provided inside the housing. The normally closed switch is positioned and installed through the switch mounting slot, thereby fixing the main body of the normally closed switch inside the housing. When assembling the extension cord socket, the extension cord enters the housing through the inlet, allowing for convenient electrical connection with the normally closed switch inside the housing. Furthermore, the switch mounting slot can be integrally formed with the housing, facilitating its installation.

[0013] In one possible design, the control element is a button. The winding component includes a disc and a winding shaft, with the winding shaft connected to one side of the disc and perpendicular to the disc.

[0014] The operating part is fixedly connected to the winding component, and along the axial direction of the winding component, the operating end of the operating part is located at the end of the winding shaft away from the disc body.

[0015] When the winding component is connected to the housing, the operating end presses the control element through the opening to disconnect the normally closed switch.

[0016] Based on the extension cord socket provided in this embodiment, the control element of the normally closed switch is set as a button, and the operating part is integrated into the winding component. The operating end is located at the end of the winding shaft away from the reel. When the winding component is installed with the housing, the operating end passes through the opening to press the control element and disconnect the normally closed switch. In this combined structure, the button-type normally closed switch is controlled by the operating part integrated into the winding component. The overall structure is easy to implement and simple.

[0017] In one possible design, the winding shaft is cylindrical, and along the axial direction of the winding shaft, the main body of the operating part is embedded in the winding shaft, and the operating end extends out of the winding shaft for pressing the button.

[0018] Based on the extension cord socket provided by this embodiment, the cylindrical winding shaft is easier to form than a solid winding shaft. Furthermore, by embedding the operating part inside the winding shaft, with only the operating end protruding from the shaft, the overall structural design is more compact and easier to form.

[0019] In one possible design, the operating part is coaxial with the winding shaft, and at least one limiting tooth is provided at the end of the winding shaft away from the disc body. A rotary mounting slot is provided on the side of the housing near the winding shaft, and the rotary mounting slot includes a central slot, a placement slot, and a locking slot.

[0020] The center groove has an exposed opening, and its shape is adapted to the shape of the winding shaft.

[0021] The placement groove and the card slot are spaced apart along the outer periphery of the central groove, and the shapes of the placement groove and the card slot are adapted to the limiting teeth.

[0022] The combination of the center groove and the placement groove is used to insert the winding shaft and the limiting tooth, and the combination of the center groove and the locking groove is used to lock the limiting tooth and keep the normally closed switch in the open state.

[0023] The extension cord socket provided by this embodiment has a limiting tooth at the end of the winding shaft away from the reel, and a rotary mounting slot with an exposed opening on the side of the housing near the winding shaft. This allows the normally closed switch to be disconnected simultaneously during the installation of the winding component and the housing, effectively preventing the extension cord socket from being energized when connected to the winding shaft, thus improving the safety of the extension cord socket. Furthermore, the overall structure is simple and compact.

[0024] In one possible design, there are multiple limiting teeth. The number of placement slots and locking slots is the same as the number of limiting teeth. Adjacent placement slots and locking slots form a mounting unit, corresponding to the insertion and engagement of one limiting tooth. A barrier is provided between two adjacent mounting units.

[0025] Based on the extension cord socket provided by this embodiment, when there are multiple limiting teeth, the barrier between the two mounting units can effectively prevent the limiting teeth from sliding from the slot of one mounting unit into the placement slot of another mounting unit, thereby preventing the winding component from coming loose from the housing.

[0026] In one possible design, when the normally closed switch is in the open state, the end face of the winding shaft contacts the bottom surface of the rotary mounting slot.

[0027] Based on the extension cord socket provided by this embodiment, when the normally closed switch is in the open state, the end face of the winding shaft contacts the bottom surface of the rotary mounting slot, thereby providing a good positioning effect for the winding shaft and preventing excessive pressing of the button by the operating part. When the limiting tooth rotates from the placement slot to the slot, the bottom surface of the rotary mounting slot can provide good support for the winding shaft, making the rotation process more stable.

[0028] In one possible design, the normally closed switch is an automatic reset switch.

[0029] Based on the extension cord socket provided by this embodiment, the normally closed switch can be switched from open to closed without any additional operation, which facilitates the use of the extension cord socket.

[0030] In one possible design, the housing is cylindrical, and there are multiple base assemblies. At the bottom of the housing, multiple base assemblies are arranged around the normally closed switch.

[0031] The extension cord socket provided in this embodiment has a cylindrical housing, with multiple socket assemblies arranged around a normally closed switch. This utilizes the central empty area created by the surrounding socket assemblies, resulting in a rational structural layout. Furthermore, the winding assembly can also be disc-shaped, with the winding shaft located at the center of the disc. The operating part is coaxially positioned with the winding shaft, thus aligning the operating part directly with the normally closed switch for easy shutdown. Attached Figure Description

[0032] Figure 1 The diagram shown is a structural schematic of an extension cord socket provided in an embodiment of this application.

[0033] Figure 2 for Figure 1 Exploded view.

[0034] Figure 3 This is a schematic diagram of the internal structure of the extension cord socket body provided in an embodiment of this application.

[0035] Figure 4 This is a power supply schematic for an extension cord socket.

[0036] Figure 5 for Figure 1A schematic diagram of the main body of the socket.

[0037] Figure 6 for Figure 2 A schematic diagram of the winding component.

[0038] Figure 7 for Figure 6 The plan view of the winding component shown.

[0039] Figure 8 for Figure 5 Enlarged view of point A in the middle.

[0040] The attached figures are labeled as follows:

[0041] 1. Socket body; 11. Housing; 111. Cable inlet; 112. Rotary mounting slot; 1121. Center slot; 1122. Placement slot; 1123. Slot; 1124. Barrier; 1125. Bottom surface of the rotary mounting slot; 113. Socket;

[0042] 12. Base assembly;

[0043] 2. Extension line;

[0044] 3. Winding component; 31. Disc body; 32. Winding shaft; 321. Limiting tooth; 322. End face of the winding shaft;

[0045] 4. Normally closed switch; 41. Control element;

[0046] 5. Operation unit; 51. Operation terminal;

[0047] 6. Socket switch;

[0048] 7. Indicator lights. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] 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 application belongs. The terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and drawings of this application are intended to cover non-exclusive inclusion.

[0051] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0052] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0053] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection. A physical connection can be a fixed connection, such as a connection secured by spacers, screws, bolts, or other spacers. A physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection. A physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] The present application will be described in detail below with reference to the accompanying drawings.

[0055] Figure 1 The diagram shown is a structural schematic of an extension cord socket provided in an embodiment of this application. Figure 2 for Figure 1 Explosion diagram, Figure 3 This is a schematic diagram of the internal structure of the extension cord socket body provided in the embodiments of this application. Figure 4 This is a power supply schematic for an extension cord socket.

[0056] Please combine Figures 1 to 4 The extension cord socket provided in this application includes a socket body 1, an extension cord 2, a winding component 3, and a control assembly. The socket body 1 includes a housing 11 and a socket assembly 12. The housing 11 is provided with a cable inlet 111, and the socket assembly 12 is located inside the housing 11. The extension cord 2 supplies power to the socket assembly 12 through the cable inlet 111. The winding component 3 is located outside the housing 11 and is used to house the extension cord 2. The winding component 3 is detachably connected to the housing 11.

[0057] The control assembly includes a normally closed switch 4 and an operating unit 5. The normally closed switch 4 is connected in series in the power supply circuit between the extension cable 2 and the socket assembly 12. The operating unit 5 is configured to open the normally closed switch 4 when the winding member 3 is connected to the housing 11, and to close the normally closed switch 4 when the winding member 3 is separated from the housing 11.

[0058] In this application, the housing 11 is made of insulating material, serving to protect the internal conductive components, isolate external environmental risks (such as electric shock, dust, or moisture), and ensure electrical safety. The socket assembly 12 includes a conductive sleeve, which functions to secure the metal prongs of the external plug, conduct current, and maintain a stable electrical connection, ensuring power transmission. The housing 11 is provided with a socket 113 for the metal prongs of the external plug to pass through. The cable winder 3 functions to organize and store the extension cord 2, improving the convenience and safety of the extension cord socket.

[0059] It should be noted that the extension cord socket of this application includes a control component, wherein the normally closed switch 4 is connected in the power supply circuit between the extension cord 2 and the socket assembly 12. The socket assembly 12 can only conduct current and the extension cord socket can only work normally when the normally closed switch 4 is closed. If the normally closed switch 4 is open, the socket assembly 12 cannot conduct current.

[0060] The control assembly also includes an operating unit 5. When the winding member 3 is connected to the housing 11, the operating unit 5 opens the normally closed switch 4. When the winding member 3 is separated from the housing 11, the normally closed switch 4 closes. Therefore, the normally closed switch 4 only closes when the winding member 3 is detached from the housing 11, allowing the extension cord socket to function. When the winding member 3 is connected to the housing 11, the normally closed switch 4 is open, and the extension cord socket cannot function properly.

[0061] With this design, when the extension cord socket is not in operation, the winding component 3 is connected to the housing 11, and the extension cord 2 can be coiled and stored using the winding component 3. When the extension cord socket is in operation, the winding component 3 needs to be removed from the housing 11, and the extension cord 2 is no longer coiled, reducing the fire risk caused by eddy current effects and improving safety.

[0062] Figure 5 for Figure 1 Please refer to the structural diagram of the main body of the socket. Figure 2 , Figure 3 and Figure 5 In some embodiments of this application, a switch mounting slot is provided inside the housing 11, and the normally closed switch 4 is positioned and installed through the switch mounting slot.

[0063] The normally closed switch 4 includes a control element 41, which is used to control the state of the normally closed switch 4. The housing 11 also has an opening that exposes the control element 41.

[0064] The operating part 5 is fixedly connected to the winding part 3. When the winding part 3 is connected to the housing 11, the operating part 5 applies force to the control element 41 through the opening, thereby disconnecting the normally closed switch 4.

[0065] Specifically, please combine Figures 3 to 5 In some embodiments of this application, a switch mounting slot is provided inside the housing 11. The normally closed switch 4 is positioned and installed through the switch mounting slot, thereby fixing the main body of the normally closed switch 4 inside the housing 11. When assembling the extension cord socket, the extension cord 2 enters the housing 11 through the inlet 111, which facilitates electrical connection with the normally closed switch 4 inside the housing 11. In addition, the switch mounting slot can be integrally formed with the housing 11, which facilitates the setting of the switch mounting slot.

[0066] To accommodate the position of the normally closed switch 4, the housing 11 has an opening that exposes the control element 41. The operating part 5 is fixedly connected to the winding member 3. When the winding member 3 is connected to the housing 11, the operating part 5 applies force to the control element 41 at the opening, causing the normally closed switch 4 to open.

[0067] As can be seen from the above, the extension cord socket provided by this embodiment has the characteristics of compact structure, reasonable configuration and convenient operation.

[0068] Please continue to refer to this. Figure 2 , Figure 3 and Figure 5 In some embodiments of this application, the control element 41 is a button. The winding member 3 includes a disc body 31 and a winding shaft 32, the winding shaft 32 being connected to one side of the disc body 31 and perpendicular to the disc body 31. The operating part 5 is fixedly connected to the winding member 3, and along the axial direction of the winding member 3, the operating end 51 of the operating part 5 is located at the end of the winding shaft 32 away from the disc body 31. When the winding member 3 is connected to the housing 11, the operating end 51 presses the control element 41 through the opening, thus disengaging the normally closed switch 4.

[0069] Specifically, please refer to Figure 2 The winding component 3 includes a disc body 31 and a winding shaft 32. When the winding component 3 is connected to the socket body 1, the end of the winding shaft 32 away from the disc body 31 is close to the housing 11 of the socket body 1. Along the circumference of the winding shaft 32, an extension wire 2 storage space is formed between the housing 11 of the socket body 1 and the disc body 31 of the winding component 3, and the extension wire 2 can be wound on the winding shaft 32.

[0070] Please combine Figure 2 , Figure 3 and Figure 5The control element 41 of the normally closed switch 4 is set as a button, and the operating part 5 is integrated into the winding member 3. The operating end 51 is located at the end of the winding shaft 32 away from the disc body 31. When the winding member 3 is installed with the housing 11, the operating end 51 passes through the opening to press the control element 41, thereby opening the normally closed switch 4. In this combined structure, the button-type normally closed switch 4 is controlled by the operating part 5 integrated into the winding member 3. The overall structure is easy to implement and simple.

[0071] Figure 6 for Figure 2 Schematic diagram of the winding component. Figure 7 for Figure 6 The diagram shows a plan view of the winding assembly. Please refer to the following reference. Figure 6 and Figure 7 In some embodiments of this application, the winding shaft 32 is cylindrical, and the main body of the operating part 5 is embedded in the winding shaft 32 along the axial direction of the winding shaft 32. The operating end 51 extends out of the winding shaft 32 for pressing the button.

[0072] Specifically, the winding component 3 is generally an injection-molded part, and the operating part 5 can be injection-molded together with the winding component 3. In the injection molding process, the shape and size of each part have a significant impact on the quality of the injection molding. For example, smaller differences in thickness among different parts of the injection-molded part are beneficial for molding. In this application, the cylindrical winding shaft 32 is easier to mold than a solid winding shaft 32. Based on this, the operating part 5 is embedded inside the winding shaft 32, with only the operating end 51 protruding from the winding shaft 32. The overall structural design is more compact and easier to mold.

[0073] Figure 8 for Figure 5 Please refer to the enlarged view at point A. Figure 5 , Figure 6 and Figure 8 In some embodiments of this application, the operating part 5 is coaxial with the winding shaft 32, and at least one limiting tooth 321 is provided at the end of the winding shaft 32 away from the disc body 31.

[0074] The housing 11 is provided with a rotating mounting slot 112 on the side near the winding shaft 32. The rotating mounting slot 112 includes a central slot 1121, a placement slot 1122 and a slot 1123.

[0075] The central groove 1121 has an exposed opening, and its shape is adapted to the shape of the winding shaft 32. The placement groove 1122 and the locking groove 1123 are spaced apart along the outer periphery of the central groove 1121, and the shapes of the placement groove 1122 and the locking groove 1123 are adapted to the limiting tooth 321.

[0076] The combination of the center groove 1121 and the placement groove 1122 is used to insert the winding shaft 32 and the limiting tooth 321. The combination of the center groove 1121 and the locking groove 1123 is used to lock the limiting tooth 321 and keep the normally closed switch 4 in the open state.

[0077] Specifically, please combine Figure 5 , Figure 6 and Figure 8 When the winding component 3 is connected to the housing 11 of the socket body 1, the winding shaft 32 of the winding component 3 must be aligned with the center groove 1121 of the rotary mounting slot 112, and the circumferential limiting teeth 321 of the winding shaft 32 must also be aligned with the placement groove 1122 of the rotary mounting slot 112. At this time, the operating end 51 of the operating part 5, which is coaxial with the winding shaft 32, will also be aligned with the button of the normally closed switch 4 at the opening. During the process of inserting the end of the winding shaft 32 with the limiting teeth 321 into the rotary mounting slot 112, force is applied to make the operating end 51 press the button to disconnect the normally closed switch 4. Afterwards, the limiting teeth 321 are rotated toward the slot 1123, and the slot 1123 locks the limiting teeth 321, keeping the normally closed switch 4 in the open state.

[0078] As can be seen from the above, a limiting tooth 321 is provided at the end of the winding shaft 32 away from the disc body 31, and a rotary mounting slot 112 with an exposed opening is provided on the side of the housing 11 near the winding shaft 32. In this way, during the installation of the winding component 3 and the housing 11, the normally closed switch 4 can be disconnected at the same time, effectively preventing the extension cord socket from being energized when connected to the winding shaft 32, improving the safety of the extension cord socket, and the overall structure is simple and compact.

[0079] Please continue to refer to this. Figure 6 and Figure 8 In some embodiments of this application, the number of limiting teeth 321 is multiple. The number of placement slots 1122 and locking slots 1123 is the same as the number of limiting teeth 321. Adjacent placement slots 1122 and locking slots 1123 form an installation unit, corresponding to the insertion and locking of one limiting tooth 321. A barrier 1124 is provided between two adjacent installation units.

[0080] Combination Figure 6 and Figure 8 When there are multiple limiting teeth 321, the barrier 1124 between the two mounting units can effectively prevent the limiting teeth 321 from sliding from the slot 1123 of one mounting unit into the placement slot 1122 of another mounting unit, thereby preventing the winding part 3 from coming loose from the housing 11.

[0081] Please continue to refer to this. Figure 7 and Figure 8In some embodiments of this application, when the normally closed switch 4 is in the open state, the end face 322 of the winding shaft contacts the bottom surface 1125 of the rotary mounting slot.

[0082] Combination Figure 7 and Figure 8 When the normally closed switch 4 is in the open state, the end face 322 of the winding shaft contacts the bottom surface 1125 of the rotary mounting slot. The bottom surface 1125 of the rotary mounting slot provides good positioning for the winding shaft 32, preventing the operating part 5 from excessively pressing the button. When the limiting tooth 321 rotates from the placement slot 1122 to the slot 1123, the bottom surface 1125 of the rotary mounting slot provides good support for the winding shaft 32, making the rotation process more stable.

[0083] Please continue to refer to this. Figure 3 In some embodiments of this application, the normally closed switch 4 is an automatic reset switch.

[0084] Please combine Figure 3 and Figure 6 The normally closed switch 4 is an automatic reset switch. When the winding component 3 is connected to the socket body 1, the normally closed switch 4 is opened by the operation part 5. When the winding component 3 is detached from the socket body 1, the normally closed switch 4 will automatically reset and return to the closed state. The normally closed switch 4 can switch from open to closed without any additional operation, which facilitates the use of the extension cord socket.

[0085] Please refer to Figure 3 In some embodiments of this application, the housing 11 is cylindrical, and the number of seat assemblies 12 is multiple. At the bottom of the housing 11, multiple seat assemblies 12 are arranged around the normally closed switch 4.

[0086] Please combine Figure 2 and Figure 3 The housing 11 is cylindrical, and at the bottom of the housing 11, multiple base assemblies 12 are arranged around the normally closed switch 4. This will bring the following beneficial effects:

[0087] First: The housing 11 is cylindrical, and multiple base assemblies 12 are arranged around the normally closed switch 4. In this way, the normally closed switch 4 utilizes the empty space in the middle created by the surrounding arrangement of the base assemblies 12, which has the characteristics of reasonable structural layout.

[0088] Second: The housing 11 is cylindrical, and the disc 31 of the winding member 3 can also be disc-shaped, with the winding shaft 32 located at the center of the disc. The operating part 5 is coaxially arranged with the winding shaft 32, so that the operating part 5 is directly opposite the normally closed switch 4, which facilitates the turning off of the normally closed switch 4.

[0089] It should be noted that, Figures 1 to 8The extension cord socket shown is merely one specific embodiment of the technical solution of this application. In other embodiments of this application, the extension cord socket may have other forms.

[0090] For example, the shell 11 can be square, rectangular or other shapes.

[0091] For example, the number of seat assemblies 12 inside the housing 11 can be one, two or more, and can be two-hole seat assemblies 12, three-hole seat assemblies 12, or five-hole seat assemblies 12.

[0092] For example, the base assembly 12 inside the housing 11 can be arranged around the normally closed switch 4, and the normally closed switch 4 can also be arranged side by side with the base assembly 12.

[0093] For example, the disc body 31 of the winding component 3 can be a disc with a perforated part as shown in the figure, or a disc without a perforated part, or a cross structure, etc.

[0094] For example, the winding spool 32 can be hollow or solid. The hollow part of the winding spool 32 can also be set from the side of the disc body 31 away from the socket body 1.

[0095] For example, the operating part 5 can be embedded in the winding shaft 32, or the operating part 5 can be directly provided at the end of the winding shaft 32.

[0096] For example, the socket body 1 may or may not have a socket switch 6 installed.

[0097] For example, indicator light 7 can be installed in the main body 1 of the socket, or it can be omitted.

[0098] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An extension cord socket, characterised in that, include: The socket body includes a housing and a socket assembly. The housing has a cable inlet, and the socket assembly is located inside the housing. An extension cable that supplies power to the socket assembly through the inlet port; A winding component, located outside the housing, is used to house the extension wire, and is detachably connected to the housing. A control component, comprising a normally closed switch and an operating unit, wherein the normally closed switch is connected in series in the power supply circuit between the extension line and the socket assembly; The operating unit is configured to open the normally closed switch when the winding member is connected to the housing, and to close the normally closed switch when the winding member is separated from the housing.

2. The extension cord socket of claim 1, wherein, The housing is provided with a switch mounting slot, through which the normally closed switch is positioned and installed. The normally closed switch includes a control element for controlling the state of the normally closed switch, and the housing is also provided with an opening that exposes the control element; The operating part is fixedly connected to the winding member. When the winding member is connected to the housing, the operating part applies force to the control element through the opening to disconnect the normally closed switch.

3. The extension cord socket according to claim 2, characterized in that, The control element is a button; The winding component includes a disc body and a winding shaft, wherein the winding shaft is connected to one side of the disc body and is perpendicular to the disc body; The operating part is fixedly connected to the winding member, and along the axial direction of the winding member, the operating end of the operating part is located at the end of the winding shaft away from the disc body; When the winding component is connected to the housing, the operating end presses the control element through the opening to disconnect the normally closed switch.

4. The extension cord socket of claim 3, wherein, The winding shaft is cylindrical. Along the axial direction of the winding shaft, the main body of the operating part is embedded in the winding shaft, and the operating end extends out of the winding shaft for pressing the button.

5. The extension cord socket of claim 3 or 4, wherein, The operating part is coaxial with the winding shaft, and at least one limiting tooth is provided at the end of the winding shaft away from the disc body. The housing is provided with a rotary mounting slot on the side near the winding shaft. The rotary mounting slot includes a central slot, a placement slot, and a slot. The central groove exposes the opening, and the shape of the central groove is adapted to the shape of the winding shaft; The placement groove and the card slot are spaced apart along the outer periphery of the central groove, and the shape of the placement groove and the shape of the card slot are adapted to the limiting teeth; The combination of the central groove and the placement groove is used to insert the winding shaft and the limiting tooth, and the combination of the central groove and the slot is used to lock the limiting tooth and keep the normally closed switch in the open state.

6. The extension cord socket of claim 5, wherein, The number of limiting teeth is multiple; the number of placement slots and locking slots is the same as the number of limiting teeth; adjacent placement slots and locking slots form an installation unit, corresponding to the insertion and locking of a limiting tooth; a barrier is provided between two adjacent installation units.

7. The extension cord socket of claim 6, wherein, When the normally closed switch is open, the end face of the winding shaft contacts the bottom surface of the rotary mounting slot.

8. The extension cord socket according to any one of claims 1 to 4, wherein, The normally closed switch is an automatic reset switch.

9. The extension cord socket according to any one of claims 1 to 4, wherein, The housing is cylindrical, and there are multiple base assemblies; at the bottom of the housing, the multiple base assemblies are arranged around the normally closed switch.

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