A plug with a lock
The plug, with its locking components and detachable connection design, solves the problem of plug loosening, achieving a secure connection, enhanced safety, and convenient maintenance, while also being waterproof.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING SEA ANCHOR ELECTRIC APPLIANCE MFG CO LTD
- Filing Date
- 2025-04-28
- Publication Date
- 2026-07-03
AI Technical Summary
Existing plug designs are prone to loosening when subjected to external forces or wear, leading to power outages and inconvenient maintenance.
The locking components include an unlocking button, a snap-fit, and a resilient reset element. The detachable locking seat and plug socket, combined with a threaded connection and guide groove design, ensure a secure connection between the plug and the socket.
It improves the stability and safety of the plug, extends its service life, reduces maintenance costs, and provides waterproof performance, ensuring a reliable power experience.
Smart Images

Figure CN224458811U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of plug technology and relates to a plug with locking mechanism. Background Technology
[0002] Currently, ordinary plugs typically ensure a secure connection through friction between the prongs and the socket. However, this design is insufficient when faced with certain challenges. For example, when the plug is subjected to even a small external force or gradually wears down over time, the friction it relies on may decrease significantly, causing the plug to easily come off the socket. This can not only lead to a sudden power outage but may also damage or even malfunction electrical appliances that rely on a stable power supply.
[0003] In summary, although some existing technical solutions have solved the problem of plug fixation, there are still issues such as unreliable fixation and inconvenient operation, indicating significant room for improvement. Summary of the Invention
[0004] The purpose of this utility model is to address the aforementioned problems existing in the prior art by proposing a locking plug, comprising:
[0005] The outer casing has a receiving cavity;
[0006] A locking assembly includes an unlock button, a latch, and a resilient reset member. The latch is received in the receiving cavity and partially protrudes from the housing. The unlock button partially passes through the housing and is connected to the latch. One end of the resilient reset member contacts the housing, and the other end of the resilient reset member contacts the unlock button.
[0007] In the aforementioned locking plug, the outer casing includes a plug socket and an upper cover. The locking assembly includes a locking seat, which is detachably connected to the plug socket. The upper cover is detachably connected to the plug socket and covers the locking seat. A latch is disposed between the plug socket and the locking seat. An unlocking button passes through the locking seat and is connected to the latch. One end of the elastic reset member contacts the locking seat, and the other end of the elastic reset member contacts the unlocking button.
[0008] In the aforementioned type of locking plug, the locking seat is provided with a fixing groove, and the unlocking button is provided with a fixing buckle, which passes through the fixing groove to connect with the locking seat.
[0009] In the aforementioned type of locking plug, the unlocking button is further provided with a fixing member and a connecting post, the buckle is provided with a connecting hole, the size of the connecting post is larger than the size of the connecting hole, and the fixing member passes through the connecting hole and connects to the connecting post.
[0010] In the aforementioned locking plug, the fixing member is provided with a first threaded portion, and the connecting post is provided with a second threaded portion, wherein the first threaded portion engages with the second threaded portion.
[0011] In the aforementioned type of locking plug, the plug socket is provided with a guide groove, and the locking seat is provided with a guide edge. The plug socket can slide into the guide groove through the guide edge to connect with the plug socket.
[0012] In the aforementioned locking plug, the plug socket is provided with a first contact surface, the locking seat is provided with a second contact surface, and after the guide edge slides into the guide groove, the second contact surface contacts the first contact surface.
[0013] In the aforementioned locking plug, the number of locking components is set to two, and the two locking components are respectively disposed on both sides of the plug socket.
[0014] The aforementioned locking plug also includes a housing that covers the upper cover and is connected to the plug socket.
[0015] In one of the aforementioned locking plugs, the latch is provided with a contact bevel, which is located on the side of the latch away from the receiving cavity.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] 1. Compared to ordinary plugs, this locking mechanism not only improves the stability of the plug, but also effectively prevents the plug from coming loose due to external force or accidental contact, further enhancing the safety of use.
[0018] 2. The detachable connection between the locking seat and the plug socket facilitates the removal of the locking component. This modular design not only extends the service life of the plug but also reduces maintenance costs. Regular inspections and timely replacement of damaged parts ensure that the plug is always in good working condition, providing users with a safer and more reliable power experience.
[0019] 3. The shell is made of flexible material and has a certain degree of deformation capability, which allows it to cover the top cover from top to bottom and partially wrap around the plug socket. Because the shell is flexible, it can fit tightly to different parts of the plug, providing a certain degree of waterproof performance and additional safety protection for the plug, preventing the top cover from accidentally falling off. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of this utility model.
[0021] Figure 2 This is an exploded view of the present invention.
[0022] Figure 3 This is an exploded view of the locking component of this utility model.
[0023] Figure 4 This is a schematic diagram of the unlocking button of this utility model.
[0024] In the picture:
[0025] 1. Outer shell; 11. Receiving cavity; 12. Plug socket; 121. Guide groove; 122. First contact surface; 13. Upper cover; 14. Sleeve; 2. Locking assembly; 21. Unlock button; 211. Fixing buckle; 212. Fixing member; 2121. First threaded part; 213. Connecting post; 2131. Second threaded part; 22. Snap-fit; 221. Connecting hole; 222. Contact slope; 23. Elastic reset member; 24. Locking seat; 241. Fixing groove; 242. Guide edge; 243. Second contact surface. Detailed Implementation
[0026] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0028] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, features defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.
[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "connection" and "fixation" should be interpreted broadly. For example, "fixation" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0030] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0031] The specific embodiments described herein are merely illustrative examples of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or adopt similar methods to replace them, but without departing from the patent of this utility model or exceeding the scope defined by the appended claims.
[0032] like Figures 1-4 As shown, a locking plug includes: a housing 1 and a locking component 2.
[0033] The outer shell 1 is provided with a receiving cavity 11.
[0034] The locking component 2 includes an unlocking button 21, a latch 22, and an elastic reset member 23. The latch 22 is accommodated in the receiving cavity 11 and partially protrudes from the outer shell 1. The unlocking button 21 partially passes through the outer shell 1 and is connected to the latch 22. One end of the elastic reset member 23 contacts the outer shell 1, and the other end of the elastic reset member 23 contacts the unlocking button 21.
[0035] Specifically, before inserting the plug into the socket, the user needs to press the unlock button 21 on the locking component 2 to push the latch 22 connected to the unlock button 21 back into the receiving cavity 11. After the plug is inserted, the latch 22 will extend out of the outer shell 1 under the action of the elastic reset member 23, thereby fixing it to the socket.
[0036] In this embodiment, compared to ordinary plugs, this locking mechanism not only improves the stability of the plug, but also effectively prevents the plug from coming loose due to external force or accidental contact, further enhancing the safety of use.
[0037] like Figures 1-4 As shown, based on the above embodiment, the outer shell 1 includes a plug socket 12 and an upper cover 13. The locking assembly 2 includes a locking seat 24, which is detachably connected to the plug socket 12. The upper cover 13 is detachably connected to the plug socket 12 and covers the locking seat 24. The buckle 22 is disposed between the plug socket 12 and the locking seat 24. The unlocking button 21 passes through the locking seat 24 and is connected to the buckle 22. One end of the elastic reset member 23 contacts the locking seat 24, and the other end of the elastic reset member 23 contacts the unlocking button 21.
[0038] Specifically, when the locking component 2 is damaged due to prolonged use, or the elastic reset component 23 loses its reset performance due to repeated use, the locking component 2 can be removed and replaced by removing the upper cover 13.
[0039] In this embodiment, the detachable connection between the locking seat 24 and the plug seat 12 facilitates the disassembly of the locking component 2. This modular design not only extends the service life of the plug but also reduces maintenance costs. By regularly inspecting and replacing damaged parts, it can be ensured that the plug is always in good working condition, providing users with a safer and more reliable power experience.
[0040] like Figures 1-4 As shown, based on the above embodiment, the locking seat 24 is provided with a fixing groove 241, and the unlocking button 21 is provided with a fixing buckle 211. The fixing buckle 211 passes through the fixing groove 241 and is connected to the locking seat 24.
[0041] Specifically, the retaining buckle 211 on the unlock button 21 passes through the retaining groove 241 on the locking seat 24 and contacts the side of the lock that is far away from the unlock button 21, preventing the unlock button 21 from detaching from the locking seat 24.
[0042] In this embodiment, the presence of the fixing buckle 211 plays a certain limiting role. After installation, the unlocking button 21 can only be pushed in the direction of the buckle 22, so that the unlocking button 21 can push the buckle 22 to move, but it is prevented from being dislodged by the elastic reset member 23.
[0043] like Figures 1-4 As shown, based on the above embodiment, the unlocking button 21 is also provided with a fixing member 212 and a connecting post 213, the buckle 22 is provided with a connecting hole 221, the size of the connecting post 213 is larger than the size of the connecting hole 221, and the fixing member 212 passes through the connecting hole 221 and connects to the connecting post 213.
[0044] Furthermore, the smaller end of the fastener 212 passes through the connecting hole 221 and connects to the connecting post 213, while the larger end of the fastener 212 is larger than the connecting hole 221, thereby connecting and fixing the unlocking button 21 to the buckle 22.
[0045] like Figures 1-4 As shown, based on the above embodiment, the fixing member 212 is provided with a first threaded portion 2121, and the connecting post 213 is provided with a second threaded portion 2131, and the first threaded portion 2121 and the second threaded portion 2131 engage.
[0046] In this embodiment, the unlocking button 21 and the buckle 22 are connected by the engagement of the first threaded part 2121 and the second threaded part 2131. This threaded connection method can provide strong fastening force, ensuring that the unlocking button 21 and the buckle 22 remain stable and do not loosen even under frequent use and pressure. At the same time, it is also very convenient to replace the parts when needed.
[0047] like Figures 1-4 As shown, based on the above embodiment, the plug socket 12 is provided with a guide groove 121, and the locking seat 24 is provided with a guide edge 242. The plug socket 12 can slide into the guide groove 121 through the guide edge 242 to connect with the plug socket 12.
[0048] In this embodiment, the guide groove 121 on the plug socket 12 is vertically arranged in the height direction. This vertically arranged guide groove 121 provides a clear directional guide, so that the locking seat 24 can be directly inserted or pulled out along a straight line when it is installed or removed. The vertically arranged guide groove 121 on the plug socket 12 not only optimizes the installation and disassembly process of the locking seat 24 and improves the user experience, but also makes the product easier to use and maintain.
[0049] like Figures 1-4 As shown, based on the above embodiment, the plug socket 12 is provided with a first contact surface 122, the locking seat 24 is provided with a second contact surface 243, and after the guide edge 242 slides into the guide groove 121, the second contact surface 243 contacts the first contact surface 122.
[0050] Specifically, after the locking seat 24 slides into the plug socket 12 via the guide edge 242 and the guide groove 121, the height position of the locking seat 24 is fixed because the first contact surface 122 contacts the second contact surface 243, thereby leaving a gap between the lower part of the locking seat 24 and the plug socket 12 for the buckle 22 to extend.
[0051] In this embodiment, the contact between the first contact surface 122 and the second contact surface 243 effectively restricts the vertical movement of the locking seat 24, thereby ensuring that it is securely fixed at a predetermined height. A certain space is intentionally left between the lower part of the locking seat 24 and the plug seat 12. This space is actually to provide sufficient range of motion for the latch 22. The latch 22 can freely extend or retract in this reserved gap without being obstructed by other components.
[0052] like Figures 1-4 As shown, based on the above embodiment, the number of locking components 2 is set to two, and the two locking components 2 are respectively disposed on both sides of the plug socket 12.
[0053] In this embodiment, two locking components 2 are provided on both sides of the plug socket 12. This design allows users to easily insert and remove the plug with just one hand, greatly improving the convenience of use. At the same time, the locking components 2 on both sides can work together to provide a more balanced and stable fixing effect for the plug, thereby effectively preventing the plug from loosening due to external force or vibration during use, and ensuring that the connection between the plug and the socket is safer and more reliable.
[0054] like Figures 1-4 As shown, based on the above embodiment, it also includes a housing 14, which covers the upper cover 13 and is connected to the plug socket 12.
[0055] In this embodiment, the housing 14 is made of a flexible material and has a certain deformation capability, which allows it to cover the upper cover 13 from top to bottom and partially wrap around the plug socket 12. Since the housing 14 is flexible, it can fit tightly to different parts of the plug, and while having a certain waterproof performance, it provides additional safety protection for the plug and prevents the upper cover 13 from accidentally falling off.
[0056] like Figures 1-4 As shown, based on the above embodiments, the locking plug is characterized in that: the buckle 22 is provided with a contact slope 222, and the contact slope 222 is provided on the side of the buckle 22 away from the receiving cavity 11.
[0057] Specifically, when the plug is inserted, the contact slope 222 on the latch 22 first contacts the edge of the socket. As the plug is gradually pushed in, the contact slope 222 will use its tilt angle to convert the contact pressure into a horizontal force. This force can push the latch 22 to overcome the force of the elastic reset member 23 and automatically retract into the receiving cavity 11.
[0058] In this embodiment, by cleverly designing the contact bevel 222 on the buckle 22, the goal of easily inserting the plug into the socket without pressing the unlock button 21 is achieved. This not only optimizes the user's operation process and reduces unnecessary steps, but also reflects the attention to detail and deep understanding of user needs in product design, providing users with a more convenient and efficient user experience.
Claims
1. A plug with a lock, characterized in that, include: The outer casing has a receiving cavity; A locking assembly includes an unlock button, a latch, and a resilient reset member. The latch is received in the receiving cavity and partially protrudes from the housing. The unlock button partially passes through the housing and is connected to the latch. One end of the resilient reset member contacts the housing, and the other end of the resilient reset member contacts the unlock button.
2. A locking plug as claimed in claim 1, wherein: The housing includes a plug socket and an upper cover. The locking assembly includes a locking seat, which is detachably connected to the plug socket. The upper cover is detachably connected to the plug socket and covers the locking seat. A snap fastener is disposed between the plug socket and the locking seat. The unlocking button passes through the locking seat and is connected to the snap fastener. One end of the elastic reset member contacts the locking seat, and the other end of the elastic reset member contacts the unlocking button.
3. A locking plug as claimed in claim 2, wherein: The locking seat is provided with a fixing groove, and the unlocking button is provided with a fixing buckle. The fixing buckle passes through the fixing groove and is connected to the locking seat.
4. A locking plug as claimed in claim 3, wherein: The unlocking button is also provided with a fixing component and a connecting post. The buckle is provided with a connecting hole. The size of the connecting post is larger than the size of the connecting hole. The fixing component passes through the connecting hole and is connected to the connecting post.
5. A locking plug as claimed in claim 4, wherein: The fastener is provided with a first threaded portion, and the connecting post is provided with a second threaded portion, wherein the first threaded portion and the second threaded portion engage.
6. A locking plug as claimed in claim 3, wherein: The plug socket is provided with a guide groove, and the locking seat is provided with a guide edge. The locking seat can slide into the guide groove through the guide edge to connect with the plug socket.
7. A locking plug as claimed in claim 6, wherein: The plug socket is provided with a first contact surface, and the locking seat is provided with a second contact surface. After the guide edge slides into the guide groove, the second contact surface contacts the first contact surface.
8. A locking plug as claimed in claim 7, wherein: The number of locking components is set to two, and the two locking components are respectively disposed on both sides of the plug socket.
9. A locking plug as defined in claim 2, wherein: It also includes a housing that covers the upper cover and is connected to the plug socket.
10. The locking plug of claim 1, wherein: The buckle is provided with a contact slope, which is located on the side of the buckle away from the receiving cavity.