A multi-position timer socket
By designing a multi-socket timer socket, the problem of existing timer sockets being unable to be grounded is solved, achieving a balance between safety and flexibility, making it suitable for a variety of electrical appliances, reducing the risk of leakage, and increasing the number of sockets.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO MIDEAY ELECTRICAL APPLICANCE CO LTD
- Filing Date
- 2025-08-12
- Publication Date
- 2026-07-07
AI Technical Summary
Existing timer sockets cannot meet the diverse needs of users, especially since they cannot provide a ground connection for high-power appliances, posing a safety hazard.
Design a multi-socket timer socket, including a two-prong plug and a first socket assembly, with an internal timing unit and grounding contact piece, a through slot for grounding connection, and an additional second socket assembly and manual master switch to achieve flexible grounding and multi-socket use.
It achieves a balance between safety and flexibility, is suitable for different electrical appliances, provides a grounding interface to reduce the risk of leakage, and increases the number of sockets to meet diverse needs.
Smart Images

Figure CN224472854U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an improvement of a timer socket. Background Technology
[0002] When using a timer socket, due to its large size, if a three-prong plug is used, it can easily block other plugs in the same socket, making those other plugs unusable.
[0003] High-power appliances, such as electric water heaters, air conditioners, and microwave ovens, generate significant current during operation. Under normal circumstances, the metal casing of these appliances is not live. However, if an internal leakage fault occurs, the casing will become live. In this case, the ground wire conducts the current to the earth, preventing electric shock. Two-prong timer sockets lack a ground pin. When a high-power appliance is connected and a leakage occurs, the user could suffer an electric shock upon touching the appliance's casing, posing a serious safety hazard. Many high-power appliances are designed with a ground wire for safety. Therefore, two-prong timer sockets cannot connect to these high-power appliances, limiting their application. For example, a user might want to use a timer to control the heating time of an electric water heater to save energy, but because two-prong timer sockets lack a ground connection, this function cannot be achieved, failing to meet diverse user needs. Utility Model Content
[0004] To overcome the shortcomings of current flexible timer sockets that cannot meet the diverse needs of users, this utility model provides a multi-hole timer socket.
[0005] The technical solution of this utility model to solve its technical problem is as follows: A multi-hole timer socket includes a socket body with a two-prong plug on the bottom surface. A first socket assembly is located inside the socket body, with the socket holes of the first socket assembly exposed on the socket body. The first socket assembly includes a first live wire conductive piece, a first neutral wire conductive piece, and a first ground wire conductive piece. The socket body also has a timing unit, which includes a timing disc on the socket body and an inner control terminal. The two-prong plug is electrically connected to the first socket assembly and is switched on and off by the control terminal of the timing unit. A ground wire contact is also located on one side of the socket body, with a ground wire contact hole on it, and the ground wire contact is electrically connected to the first ground wire conductive piece. A through slot is located on the socket body, with the ground wire contact hole exposed in the through slot. The first live wire conductive piece, the first neutral wire conductive piece, and the two-prong plug are electrically connected in a live-to-live and neutral-to-neutral configuration.
[0006] A preferred location for the through slot is that the through slot is formed on the bottom surface of the socket body and close to the side of the socket body.
[0007] Furthermore, the through groove is formed at the corner of the bottom surface of the socket body.
[0008] To facilitate external connections, a recessed hole is provided on the bottom surface of the socket body, and the through groove is formed in the recessed hole.
[0009] To facilitate the fixing of the ground wire connector, the ground wire connector is provided with a fixing hole and a positioning notch. The positioning notch is engaged with the mating block on the socket body. The ground wire connector is fixed to the wall of the countersunk hole through the fixing hole. The other positions of the ground wire connector completely seal the through groove.
[0010] To facilitate wiring, the grounding contact is provided with a connection end, which is electrically connected to the conductive piece of the first grounding pin, typically by soldering conductive wire.
[0011] A preferred embodiment of a grounding connection hole is provided with internal threads, which allows a threaded connector to be used as the grounding wire connection.
[0012] An additional socket option is provided, allowing the timer socket to control two devices simultaneously. The socket itself also includes a second socket assembly, which internally comprises a second live wire conductive plate, a second neutral wire conductive plate, and a second ground wire conductive plate. The second ground wire conductive plate is electrically connected to the first ground wire conductive plate. A replaceable panel is provided on the outer surface of the second socket assembly on the socket body. This panel can be a closed panel or a panel with sockets. A closed panel is used when a single appliance is used, while a panel with sockets is used when multiple appliances are used.
[0013] To prevent accidental activation of the timer dial, a removable cover is provided on the timer dial.
[0014] An additional master control is added, and the socket body is also equipped with a manual master switch. The manual master switch is located on the circuit connection between the two-prong plug and the first socket assembly, that is, the manual master switch can control the on / off of the electrical connection between the two-prong plug and the first socket assembly.
[0015] When using this invention, we can disregard the grounding hole when using small appliances that do not require grounding in the timer socket; when using appliances that require grounding, we connect an external grounding wire to the grounding hole at one corner of the socket body, thereby reducing the risk of leakage. The usage method of the timer socket is the same as that of existing timer sockets, and will not be described again here.
[0016] The beneficial effects of this utility model are as follows: 1. It combines the advantages of avoiding socket locations and preventing leakage of ground wires. There are many types of electrical appliances on the market. Some appliances are equipped with three-prong plugs and require grounding protection; while others do not require grounding. The two-prong timer socket with an optional ground wire connection can meet the safety requirements of appliances that need grounding, while also allowing for flexible use without a ground wire. 2. For appliances that require grounding, such as high-power appliances like electric water heaters and microwave ovens, if a fault occurs in the internal circuit during use, causing the metal casing to become electrified, the optional ground wire can conduct the current to the ground. This provides a safe discharge path for leakage current, preventing electric shock accidents caused by contact with the electrified casing. Furthermore, some appliances may generate electric sparks when leaking current; if flammable materials are present in the surrounding environment, this can easily cause an electrical fire. The ground wire greatly improves the safety when using electrical appliances. 3. The timer socket adds an optional second socket component, allowing users to choose between one-to-two control by changing the panel with or without a socket, providing strong flexibility and applicability. Attached Figure Description
[0017] Figure 1 This is a front view of one embodiment of the present invention.
[0018] Figure 2 This is a schematic diagram of the back of one embodiment of the present invention.
[0019] Figure 3 This is an exploded view of one embodiment.
[0020] Figure 4 This is a schematic diagram of a secondary explosion in one embodiment.
[0021] Figure 5 This is a schematic diagram of a second socket assembly using a socket plate in one embodiment. Detailed Implementation
[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0023] Example 1
[0024] Combined with appendix Figures 1 to 5A multi-socket timer socket includes a socket body 1, a two-prong plug 3 on the bottom surface 2 of the socket body, a first socket assembly 4 inside the socket body 1, the sockets of the first socket assembly 4 protruding from the socket body 1, and the first socket assembly 4 including a first live wire conductive piece, a first neutral wire conductive piece, and a first ground wire conductive piece 5; the socket body 1 also includes a timing unit 6, the timing unit 6 including a timing disc 7 on the socket body 1 and an inner control terminal 8, the two-prong plug 3 being electrically connected to the first socket assembly 4 and switched on and off by the control terminal 8 of the timing unit, a ground wire contact piece 9 on one side inside the socket body 1, the ground wire contact piece 9 having a ground wire hole 10, the ground wire contact piece 9 being electrically connected to the first ground wire conductive piece 5; the socket body 1 has a through groove 11, the ground wire hole 10 protruding from the through groove 11.
[0025] A preferred position of the through slot 11 is that the through slot 11 is formed on the bottom surface of the socket body 1 and close to the side of the socket body 1.
[0026] Furthermore, the through groove 11 is formed at the corner of the bottom surface 2 of the socket body.
[0027] To facilitate external connection, a recessed hole 12 is provided on the bottom surface 2 of the socket body, and the through groove 11 is formed in the recessed hole 12.
[0028] To facilitate the fixing of the ground wire connector 9, the ground wire connector 9 is provided with a fixing hole 13 and a positioning notch 14. The positioning notch 14 is engaged with the mating block 15 on the socket body 1. The ground wire connector 9 is fixed to the wall of the countersunk hole 12 through the fixing hole 13. The other positions of the ground wire connector 9 completely seal the through groove 11.
[0029] To facilitate wiring, the grounding contact 9 is provided with a connection end 16, which is electrically connected to the first grounding pin conductive piece 5, generally by soldering conductive wire.
[0030] A preferred embodiment of the grounding hole 10 is that the grounding hole 10 has internal threads, so that a threaded component can be used as a grounding wire connection.
[0031] An additional socket option is added, allowing the timer socket to control two devices simultaneously. The socket body 1 also includes a second socket assembly 17, which internally comprises a second live wire conductive plate, a second neutral wire conductive plate, and a second ground wire conductive plate 18. The second ground wire conductive plate 18 is electrically connected to the first ground wire conductive plate 5. A replaceable panel is provided on the outer end face of the second socket assembly 17 on the socket body 1. This panel can be a closed plate 19 or a plate with sockets 20. The closed plate 19 is used when a single appliance is used, while the plate with sockets 20 is used when multiple appliances are used.
[0032] To prevent accidental activation of the timer dial 7, a removable cover 21 is provided on the timer dial 7.
[0033] An additional master switch is added. The socket body 1 is also equipped with a manual master switch 22. The manual master switch 22 is located on the circuit connection between the two-prong plug 3 and the first socket assembly 4. That is, the manual master switch 22 can control the on / off of the electrical connection between the two-prong plug 3 and the first socket assembly 4.
[0034] In this embodiment, when using small electrical appliances that do not require grounding in the timer socket, we can ignore the ground wire terminal 10. When using electrical appliances that require grounding, we connect an external grounding wire to the ground wire terminal 10 at one corner of the socket body 1 to reduce the risk of leakage. The usage method of the timer socket is the same as that of the existing timer socket structure, and will not be described again here.
[0035] The beneficial effects of this embodiment are as follows: 1. It combines the advantages of avoiding socket locations and preventing leakage through grounding. There are many types of electrical appliances on the market. Some appliances are equipped with three-prong plugs and require grounding protection; while others do not require grounding. The two-prong timer socket with an optional grounding hole can meet the safety requirements of appliances that need grounding, while also allowing for flexible use without a grounding wire. 2. For appliances that require grounding, such as high-power appliances like electric water heaters and microwave ovens, if a fault occurs in the internal circuit during use, causing the metal casing to become electrified, the optional grounding wire can conduct the current to the ground. This provides a safe discharge path for leakage current, preventing electric shock accidents caused by contact with the electrified casing. Furthermore, some appliances may generate electric sparks when leaking current; if flammable materials are present in the surrounding environment, this can easily cause an electrical fire. The grounding wire greatly improves the safety when using electrical appliances. 3. The timer socket adds an optional second socket component, allowing users to choose between one-to-two control by changing the panel with or without a socket, providing strong flexibility and applicability.
Claims
1. A multi-hole timer socket, comprising a socket body, a two-prong plug on the bottom surface of the socket body, a first socket assembly inside the socket body, the sockets of the first socket assembly protruding from the socket body, the first socket assembly including a first live wire conductive piece, a first neutral wire conductive piece, and a first ground wire conductive piece; the socket body further comprises a timing unit, the timing unit including a timing dial on the socket body and an inner control terminal, the control terminal controlling the on / off state of the electrical connection between the two-prong plug and the first socket assembly, characterized in that: The socket body is also provided with a ground wire contact piece on one side, and the ground wire contact piece is provided with a ground wire hole. The ground wire contact piece is electrically connected to the first ground wire pin conductive piece. The socket body is provided with a through groove, and the ground wire hole is exposed in the through groove.
2. The multi-hole timer socket according to claim 1, characterized in that: The through slot is formed on the bottom surface of the socket body and close to the side of the socket body.
3. The multi-hole timer socket according to claim 1, characterized in that: The through slot is located at the corner of the bottom surface of the socket body.
4. The multi-hole timer socket according to claim 1, characterized in that: The socket body has a recessed countersunk hole on its bottom surface, and the through groove is formed in the countersunk hole.
5. The multi-hole timer socket according to claim 4, characterized in that: The grounding contact is provided with a fixing hole and a positioning notch. The positioning notch is engaged with the mating block on the socket body. The grounding contact is fixed to the wall of the countersunk hole through the fixing hole. The other positions of the grounding contact completely seal the through groove.
6. The multi-hole timer socket according to claim 1, characterized in that: The grounding contact is provided with a connection end, which is electrically connected to the first grounding pin conductive piece.
7. The multi-hole timer socket according to claim 1, characterized in that: The grounding hole is threaded.
8. The multi-hole timer socket according to claim 1, characterized in that: The socket body is further provided with a second socket assembly, which includes a second live wire conductive plate, a second neutral wire conductive plate, and a second ground wire conductive plate. The second ground wire conductive plate is electrically connected to the first ground wire conductive plate. The socket body is provided with a replaceable panel on the outer end face of the second socket assembly. The panel can be a closed plate or a plate with sockets.
9. The multi-hole timer socket according to claim 1, characterized in that: The timing disk is also equipped with a removable disk cover.
10. The multi-hole timer socket according to claim 1, characterized in that: The socket body is also equipped with a manual master switch, which can control the on / off connection between the two-prong plug and the first socket assembly.