A socket for reminding of a plug contact state
By adding spaced conductive plates and inserts to the socket to form a detection circuit, and using an indicator to provide real-time feedback on the plug contact status, the problem of detecting poor plug contact is solved, and the safety and reliability of the socket are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 宁波索玛电器有限公司
- Filing Date
- 2025-07-21
- Publication Date
- 2026-06-09
Smart Images

Figure CN224342677U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sockets, specifically to a socket that provides a plug contact status indicator. Background Technology
[0002] In household or industrial electricity use, sockets are essential. These sockets can be fixed or portable. For safety and to prevent electric leakage, a power control switch is often installed on the socket corresponding to one or more sets of sockets. This switch has a light guide for indication. However, this indication only shows that the corresponding set of sockets is connected to the power supply; it cannot detect whether the appliance plug is making poor contact with the prongs inside the sockets.
[0003] In view of the above, this application is hereby submitted. Utility Model Content
[0004] This utility model provides a socket with plug contact status indication to solve at least one of the above-mentioned technical problems.
[0005] To address the aforementioned problems, as one aspect of this utility model, a socket for indicating plug contact status includes a positive terminal prong, a negative terminal prong, a socket body, a positive conductive sheet, a negative conductive sheet, and an indicator element.
[0006] A positive terminal prong is used to connect the positive wire of the power supply; a negative terminal prong is used to connect the negative wire of the power supply; the socket body has a first insertion channel for guiding the insertion of the positive metal rod of the plug, at least a portion of the positive terminal prong is located in the first insertion channel; and a second insertion channel for guiding the insertion of the negative metal rod of the plug, at least a portion of the negative terminal prong is located in the second insertion channel; a positive conductive piece is at least partially located in the first insertion channel and is spaced apart from the positive terminal prong, so that when the positive metal rod is inserted into the first insertion channel, the positive conductive piece and the positive terminal prong are electrically connected through the positive metal rod; a negative conductive piece is at least partially located in the second insertion channel and is spaced apart from the negative terminal prong, so that when the negative metal rod is inserted into the second insertion channel, the negative conductive piece and the negative terminal prong are electrically connected through the negative metal rod; a prompting element is used to emit light and / or sound prompts, and the power input of the prompting element is electrically connected to the positive conductive piece and the negative conductive piece respectively.
[0007] Preferably, the distance between the positive electrode insert and the positive electrode conductive sheet is 5-15 mm, and the distance between the negative electrode insert and the negative electrode conductive sheet is 5-15 mm.
[0008] Preferably, the positive electrode conductive sheet has a first elastic portion that can elastically stretch and contract along a direction perpendicular to the first insertion channel, and the negative electrode conductive sheet has a second elastic portion that can elastically stretch and contract along a direction perpendicular to the second insertion channel.
[0009] Preferably, the prompting element is a light guide installed on the outer surface of the socket body, and the light guide integrates a light-emitting element.
[0010] Preferably, the outer surface of the socket body has a first socket corresponding to the first insertion channel and a second socket corresponding to the second insertion channel, and the light guide is located near the first socket and the second socket.
[0011] Preferably, the positive conductive sheet is located between the light guide and the positive electrode insert, and the negative conductive sheet is located between the light guide and the negative electrode insert.
[0012] Preferably, the socket body is a mobile socket, with a positive plug, a negative plug, a positive conductive plate, a negative conductive plate, and a prompting element forming a socket group, and the mobile socket has at least two socket groups.
[0013] Preferably, the plurality of said socket groups are arranged on the same plane, or arranged on different faces of a polyhedron.
[0014] Preferably, it also includes a waterproof component, which has a sealed state for sealing the entrance positions of the first insertion channel and the second insertion channel, and an open state for inserting the metal rod of the plug into the first insertion channel and the second insertion channel.
[0015] Preferably, it further includes a grounding plug for connecting to the grounding wire at the power source; and an energizing switch for controlling whether the positive plug and the negative plug are in an energized state.
[0016] This invention adds an independent conductive plate spaced apart from the positive / negative terminals. When the plug's metal rod is fully inserted, the rod's conductivity simultaneously connects the terminals and the conductive plate. The power inlet of the indicator is connected to both conductive plates, forming a detection circuit. When the circuit is complete, an audible / visual alert is triggered. This provides real-time feedback on the contact status between the plug and terminals, ensuring a notification when the plug is energized. Furthermore, the spaced arrangement of the conductive plate and terminals, with conductivity via the plug's metal rod, prevents the conductive plate from remaining in contact with the terminals after the plug is removed, thus avoiding false alarms caused by deformation or other reasons. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of the socket for indicating the plug contact status according to an embodiment of this utility model;
[0018] Figure 2 yes Figure 1 A schematic diagram of the structure of the concealed socket housing;
[0019] Figure 3 yes Figure 2 A schematic diagram of the structure of the hidden external connector;
[0020] Figure 4 yes Figure 3 A structural diagram from a second perspective;
[0021] Figure 5 This is a schematic diagram of the overall structure of a socket for indicating plug contact status according to another embodiment of this utility model;
[0022] Figure 6 yes Figure 5 A structural diagram of part of the structure.
[0023] Figure label:
[0024] 1. Positive terminal; 2. Negative terminal; 3. Socket body; 31. First socket; 32. Second socket; 33. Grounding terminal; 34. Power switch; 35. Power cord; 36. Power plug; 4. Positive conductive plate; 5. Negative conductive plate; 6. Indicator; 7. Socket assembly; 8. Waterproof component; 9. External plug; 91. Metal rod. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0027] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0028] Please refer to Figures 1 to 4 A socket for indicating plug contact status includes a positive plug 1, a negative plug 2, a socket body 3, a positive conductive piece 4, a negative conductive piece 5, and an indicator 6.
[0029] Positive plug 1 is used to connect the positive wire of the power supply; negative plug 2 is used to connect the negative wire of the power supply; the socket body 3 has a first insertion channel for guiding the insertion of the positive metal rod 91 of the plug, at least a portion of the positive plug 1 is located in the first insertion channel, the first insertion channel corresponds to the first socket 31 on the socket body 3, so as to maintain electrical contact with the positive metal rod 91 of the plug when the external plug 9 is inserted; and a second insertion channel for guiding the insertion of the negative metal rod 91 of the plug, the second insertion channel corresponds to the second socket 32 on the socket body 3, at least a portion of the negative plug 2 is located in the second insertion channel, so as to maintain electrical contact with the negative metal rod 91 of the plug when the external plug 9 is inserted.
[0030] The positive conductive piece 4 is at least partially located in the first insertion channel and is spaced apart from the positive plug piece 1. The direction of this spacing is along the insertion direction of the positive metal rod 91 of the plug, so that when the positive metal rod 91 is inserted into the first insertion channel, the positive conductive piece 4 and the positive plug piece 1 are electrically connected through the positive metal rod 91.
[0031] The negative conductive piece 5 is at least partially located in the second insertion channel and is spaced apart from the negative plug 2. The direction of this spacing is along the insertion direction of the negative metal rod 91 of the plug, so that when the negative metal rod 91 is inserted into the second insertion channel, the negative conductive piece 5 and the negative plug 2 are electrically connected through the negative metal rod 91.
[0032] The prompting element 6 is used to emit light and / or sound prompts, and the power input of the prompting element 6 is electrically connected to the positive conductive plate 4 and the negative conductive plate 5 respectively, thereby forming a detection circuit.
[0033] An independent conductive plate is added, spaced 1 / 2 of the distance from the positive / negative terminals. When the plug metal rod 91 is fully inserted, its conductivity connects the terminals and the conductive plate simultaneously. The power inlet of the indicator 6 is connected to both conductive plates, forming a detection circuit. When the circuit is complete, an audible / visual alert is triggered. This provides real-time feedback on the contact status between the plug and the terminals, ensuring that an alert is given when the plug is energized. Furthermore, the spacing between the conductive plate and the terminals, conducted via the plug metal rod 91, prevents the conductive plate from remaining in contact with the terminals after the plug is removed due to deformation, thus avoiding false alarms. It also ensures that the material inserted into the socket is conductive.
[0034] Preferably, the distance between the positive electrode plug 1 and the positive electrode conductive plate 4 is 5-15mm, and the distance between the negative electrode plug 2 and the negative electrode conductive plate 5 is 5-15mm. This distance ensures that there is no electrical connection between the plug and the conductive plate when the plug is not fully inserted, thereby avoiding false triggering; at the same time, a distance of less than 15mm can accommodate external plugs 9 of different lengths of metal rods 91 of different models.
[0035] Furthermore, in this embodiment, the indicator 6 is a light guide installed on the outer surface of the socket body 3, and the light guide integrates a light-emitting element. Using a light guide with an integrated light-emitting element (such as an LED + light guide ring) guides light to the socket surface, featuring low power consumption and long lifespan, and can intuitively display the plug's contact status. Furthermore, the light guide includes a current-limiting resistor to limit the circuit current (e.g., 100mA), protecting the light-emitting element from overcurrent damage.
[0036] The socket body 3 has a first socket 31 corresponding to the first insertion channel and a second socket 32 corresponding to the second insertion channel on its outer surface. The light guide is located near the first socket 31 and the second socket 32. The light guide, arranged near the sockets, such as surrounding the sockets in this embodiment, can associate the socket with the location of the prompt, quickly locating the problematic socket.
[0037] In one embodiment, the positive electrode conductive sheet 4 is located on the side of the positive electrode insert 1 away from the light guide, and the negative electrode conductive sheet 5 is located on the side of the negative electrode insert 2 away from the light guide.
[0038] More preferably, the positive conductive plate 4 and the negative conductive plate 5 are located at a distance of one standard plug metal rod 91 from the outer surface of the socket body 3, thereby ensuring that when the plug is not fully inserted, the metal rod 91 cannot simultaneously contact the plug and the conductive plate, confirming reliable conduction when the plug is fully inserted, and thus enabling accurate detection of the plug insertion depth.
[0039] In a preferred embodiment, the positive conductive sheet 4 is located between the light guide and the positive electrode insert 1, and the negative conductive sheet 5 is located between the light guide and the negative electrode insert 2. The conductive sheets positioned between the light guide and the inserts shorten the wire path, simplifying internal wiring, reducing failure rates, and improving production efficiency.
[0040] The socket body 3 can be a fixed socket that is fixed in a wall or on a desk, or it can be a mobile socket. In this embodiment, the socket body 3 is a mobile socket, which is connected to a power cord 35 and a power plug 36 located at the far end of the power cord 35.
[0041] The mobile socket comprises a positive plug 1, a negative plug 2, a positive conductive plate 4, a negative conductive plate 5, and a prompting element 6, forming a socket group 7. The mobile socket has at least two socket groups 7. A mobile socket with multiple socket groups 7 can provide multiple plug positions and independently monitor the status of each socket, thus supporting simultaneous use of multiple devices. Each socket is monitored independently without interference.
[0042] Each socket group 7 has an independently configured positive conductive plate 4, negative conductive plate 5, and indicator 6, forming an independent detection circuit. For example, the positive conductive plate 4 of the first socket group 7 is only electrically connected to the positive plug 1 and indicator 6 of the first socket group 7. Therefore, the contact status detection of each socket group 7 does not interfere with each other, supporting separate monitoring when multiple devices are used simultaneously. However, it does not restrict the positive plugs 1 of multiple socket groups 7 from being located on the same long metal strip, nor does it restrict the negative plugs 2 of multiple socket groups 7 from being located on the same long metal strip.
[0043] In this embodiment, multiple socket groups 7 are arranged on the same plane.
[0044] Please refer to Figure 5 and Figure 6 In another preferred embodiment, the plurality of socket groups 7 are respectively arranged on different faces of a polyhedron (such as a cubic socket or a hexahedral socket). This adapts to different spatial scenarios (desktop / corner) and improves space utilization.
[0045] To further improve the contact effect, the positive electrode conductive sheet 4 has a first elastic portion that can elastically expand and contract along a direction perpendicular to the first insertion channel, and the negative electrode conductive sheet 5 has a second elastic portion that can elastically expand and contract along a direction perpendicular to the second insertion channel. This allows for adaptive expansion and contraction under pressure from the plug metal rod 91, ensuring compatibility with plugs of different sizes and guaranteeing tight contact between the conductive sheet and the metal rod 91.
[0046] Please refer to Figure 2It also includes a waterproof component 8, which has a sealed state for sealing the entrance positions of the first and second insertion channels, and an open state for the metal rod 91 of the plug to be inserted into the first and second insertion channels. In this embodiment, the waterproof component 8 is rotatably connected to the socket body 3, has a rotation guide slope corresponding to the first and second insertion channels, and is reset by a torsion spring.
[0047] Furthermore, it also includes a grounding plug 33, which is used to connect to the grounding wire at the power source; and a power switch 34, which is used to control whether the positive plug 1 and the negative plug 2 are in a powered state. The grounding plug 33 guides leakage current, and the power switch 34 physically cuts off the power supply.
[0048] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions that fall within the scope of this utility model's concept are protected by this utility model.
Claims
1. A socket for indicating plug contact status, characterized in that, include, Positive terminal connector, used to connect the positive wire to the power supply; The negative terminal is used to connect the negative wire to the power supply. The socket body has a first insertion channel for guiding the insertion of the positive metal rod of the plug, and at least a portion of the positive plug is located in the first insertion channel; And a second insertion channel for inserting the negative metal rod of the guide plug, wherein at least a portion of the negative plug is located in the second insertion channel; A positive conductive sheet is at least partially located in the first insertion channel and is spaced apart from the positive electrode insert, so that when the positive electrode metal rod is inserted into the first insertion channel, the positive conductive sheet and the positive electrode insert are electrically connected through the positive electrode metal rod. The negative electrode conductive sheet is at least partially located in the second insertion channel and is spaced apart from the negative electrode insert, so that when the negative electrode metal rod is inserted into the second insertion channel, the negative electrode conductive sheet and the negative electrode insert are electrically connected through the negative electrode metal rod. A prompting element is used to emit light and / or sound prompts, and the power input of the prompting element is electrically connected to the positive conductive plate and the negative conductive plate respectively.
2. The socket for indicating plug contact status according to claim 1, characterized in that, The distance between the positive electrode insert and the positive electrode conductive plate is 5-15 mm, and the distance between the negative electrode insert and the negative electrode conductive plate is 5-15 mm.
3. The socket for indicating plug contact status according to claim 2, characterized in that, The positive electrode conductive sheet has a first elastic portion that can elastically expand and contract along a direction perpendicular to the first insertion channel, and the negative electrode conductive sheet has a second elastic portion that can elastically expand and contract along a direction perpendicular to the second insertion channel.
4. The socket for indicating plug contact status according to claim 1, characterized in that, The prompting element is a light guide installed on the outer surface of the socket body, and the light guide integrates a light-emitting element.
5. The socket for indicating plug contact status according to claim 4, characterized in that, The outer surface of the socket body has a first socket corresponding to the first insertion channel and a second socket corresponding to the second insertion channel, and the light guide is located near the first socket and the second socket.
6. The socket for indicating plug contact status according to claim 5, characterized in that, The positive conductive sheet is located between the light guide and the positive electrode insert, and the negative conductive sheet is located between the light guide and the negative electrode insert.
7. The socket for indicating plug contact status according to claim 1, characterized in that, The socket body is a portable socket, with a positive plug, a negative plug, a positive conductive piece, a negative conductive piece, and a prompting piece forming a socket group. The portable socket has at least two socket groups.
8. The socket for indicating plug contact status according to claim 7, characterized in that, Multiple sets of sockets may be arranged on the same plane or on different faces of a polyhedron.
9. The socket for indicating plug contact status according to claim 1, characterized in that, It also includes a waterproof component having a sealed state for sealing the entrance positions of the first and second insertion channels, and an open state for inserting the metal rod of the plug into the first and second insertion channels.
10. The socket for indicating plug contact status according to claim 1, characterized in that, It also includes a grounding plug, which is used to connect to the grounding wire at the power source; It also includes an energizing switch, which is used to control whether the positive terminal and the negative terminal are in an energized state.