A safety plug with a lock
The safety plug design with a locking buckle solves the problem of plug loosening by utilizing the mechanical linkage between the buckle and the socket slot and the inclined structure, thus achieving a stable connection and convenient operation.
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 plugs may lose friction after being subjected to slight external force or after prolonged use, leading to loosening and affecting the normal use of electrical appliances.
A safety plug with a locking mechanism was designed, which uses a mechanical linkage structure of a buckle, an unlocking button, a transmission component, and a spring-loaded reset component. The plug is connected to the socket through the buckle and the beveled design ensures stable fixation.
It improves the safety and stability of the plug connection, prevents loosening or falling out, simplifies the insertion process, and provides reliable protection for the use of electrical appliances.
Smart Images

Figure CN224458810U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of plug technology and relates to a safety plug with a locking buckle. Background Technology
[0002] Currently, conventional plugs mainly rely on the friction between the prongs and the socket to maintain the connection. However, in some cases, such as when the plug is subjected to slight external force or after long-term use, this friction may weaken, causing the plug to loosen, interrupting the power supply, and potentially damaging the electrical appliances being used.
[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 safety plug with a locking mechanism, comprising:
[0005] The housing has a receiving cavity;
[0006] A locking assembly includes a latch, an unlock button, a transmission component, and a resilient reset component. The latch is movably connected to the housing, with one side of the latch disposed within the receiving cavity and the other side of the latch disposed outside the receiving cavity. The unlock button is movably connected to the housing, and a portion of the unlock button extends into the receiving cavity. The transmission component is received within the receiving cavity, with one end of the transmission component contacting the portion of the unlock button extending into the receiving cavity, and the other end of the transmission component contacting the side of the latch disposed within the receiving cavity. The resilient reset component is received within the receiving cavity, with one end contacting the housing and the other end of the resilient reset component contacting the latch.
[0007] The aforementioned safety plug with a locking mechanism further includes a guide base disposed in the receiving cavity and connected to the housing. The transmission component is slidably connected to the guide base, and the buckle is slidably connected to the guide base. One end of the elastic reset component contacts the guide base, and the other end of the elastic reset component contacts the buckle.
[0008] In the aforementioned safety plug with a locking mechanism, the transmission component is provided with a first inclined surface, and the buckle is provided with a second inclined surface, with the first inclined surface contacting the second inclined surface.
[0009] In the aforementioned safety plug with a locking mechanism, the buckle is provided with a first contact surface, and the guide base is provided with a second contact surface, wherein the first contact surface can contact the second contact surface.
[0010] In the aforementioned safety plug with a locking buckle, the unlocking button is provided with a push post and a fixing buckle, the transmission component is provided with a fixing groove, the push post is in contact with the transmission component, and the fixing buckle is connected to the fixing groove.
[0011] In the aforementioned safety plug with a locking mechanism, the housing is provided with a connecting through hole, and the push post and the fixing buckle contact the transmission component through the connecting through hole.
[0012] In the aforementioned safety plug with a locking mechanism, the latch is provided with a contact bevel, which is located at the end of the latch away from the elastic reset member.
[0013] In the aforementioned safety plug with a locking mechanism, both the guide base and the buckle are provided with elastic receiving grooves. The elastic reset member is accommodated in the elastic receiving groove, with one end of the elastic reset member contacting the elastic receiving groove on the guide base and the other end of the elastic reset member contacting the elastic receiving groove on the buckle.
[0014] In the aforementioned safety plug with a locking mechanism, the housing includes an upper cover and a lower base. The upper cover is provided with a connecting post, and the lower base is provided with a connecting hole. The lower base is accommodated in the connecting hole via the connecting post, thereby connecting with the upper cover.
[0015] In the aforementioned safety plug with a locking mechanism, the housing further includes a sleeve that covers the upper cover and partially encloses the lower base, with grips provided on both sides of the sleeve.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] 1. By connecting the plug to a socket with a specific slot using a snap-fit mechanism, the safety plug with a locking mechanism can be secured. Through simple mechanical linkage and the application of elastic elements, it not only ensures ease of use but also greatly improves the safety and stability of the connection, effectively preventing the plug from loosening or falling off due to accidental collisions or improper operation, thus providing a reliable guarantee for the normal use of electrical equipment.
[0018] 2. Through the contact between the first and second inclined surfaces, the unidirectional movement of the transmission component is decomposed and transformed into the synchronous vertical movement of the two side buckles. The synchronous operation of the two side buckles greatly enhances the stability of the plug fixation and avoids loosening or falling off due to uneven force on one side.
[0019] 3. The design of the beveled contact surface on the buckle allows users to insert the plug into the socket without pressing the unlock button, simplifying the user's operation steps and improving the convenience of use. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of this utility model.
[0021] Figure 2 This is a schematic diagram of the internal structure of this utility model.
[0022] Figure 3 This is a bottom view of the interior of this utility model.
[0023] Figure 4 This is a schematic diagram showing the connection between the transmission component and the buckle of this utility model.
[0024] Figure 5 This is a schematic diagram of the structure of the connecting component of this utility model.
[0025] In the diagram: 1. Housing; 11. Receiving cavity; 12. Connecting through hole; 13. Upper shell cover; 131. Connecting hole; 14. Lower shell base; 141. Connecting post; 15. Sleeve; 151. Grip part; 2. Locking assembly; 21. Buckle; 211. Second inclined surface; 212. Contact inclined surface; 213. First contact surface; 22. Unlock button; 221. Push post; 222. Fixing buckle; 23. Transmission component; 231. First inclined surface; 232. Fixing groove; 24. Elastic reset component; 3. Guide base; 31. Second contact surface; 32. Elastic receiving groove. 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 safety plug with a locking mechanism includes: a housing 1 and a locking component 2.
[0033] The housing 1 is provided with a receiving cavity 11.
[0034] The locking assembly 2 includes a latch 21, an unlocking button 22, a transmission component 23, and an elastic reset component 24. The latch 21 is movably connected to the housing 1, with one side of the latch 21 disposed within the receiving cavity 11 and the other side of the latch 21 disposed outside the receiving cavity 11. The unlocking button 22 is movably connected to the housing 1, and a portion of the unlocking button 22 extends into the receiving cavity 11. The transmission component 23 is accommodated within the receiving cavity 11, with one end of the transmission component 23 contacting the portion of the unlocking button 22 extending into the receiving cavity 11, and the other end of the transmission component 23 contacting the side of the latch 21 disposed within the receiving cavity 11. The elastic reset component 24 is accommodated within the receiving cavity 11, with one end of the elastic reset component 24 contacting the housing 1 and the other end of the elastic reset component 24 contacting the latch 21.
[0035] Specifically, the safety plug with a locking buckle needs to be matched with a corresponding socket with a slot. When the user presses the unlock button 22, the unlock button 22 will push the transmission component 23 to move in the receiving cavity 11, thereby causing the buckles 21 located on both sides of the housing 1 to fully extend into the receiving cavity 11. At this time, the safety plug can be smoothly inserted into the socket. When the user releases the unlock button 22, the buckles 21 will extend out of the housing 1 again under the action of the elastic reset component 24 and contact the slot on the socket, thereby fixing the safety plug.
[0036] In this embodiment, the safety plug with a locking mechanism can be fixed by connecting the buckle 21 to the socket with a specific slot. Through simple mechanical linkage and the application of elastic elements, the convenience of use is ensured, and the safety and stability of the connection are greatly improved. This effectively prevents the plug from loosening or falling off due to accidental collisions or improper operation, and provides a reliable guarantee for the normal use of electrical equipment.
[0037] like Figures 1-4 As shown, based on the above embodiment, it also includes a guide base 3, which is disposed in the receiving cavity 11. The guide base 3 is connected to the housing 1. The transmission member 23 is slidably connected to the guide base 3. The buckle 21 is slidably connected to the guide base 3. One end of the elastic reset member 24 contacts the guide base 3, and the other end of the elastic reset member 24 contacts the buckle 21.
[0038] In this embodiment, the guide base 3 is disposed in the receiving cavity 11, which not only provides basic support for the entire structure, but also enables the transmission component 23 to move smoothly along the preset direction during transmission, thereby ensuring the accuracy and stability of the unlocking button 22 pushing the buckle 21 to retract.
[0039] like Figures 1-4 As shown, based on the above embodiment, the transmission component 23 is provided with a first inclined surface 231, and the buckle 21 is provided with a second inclined surface 211, with the first inclined surface 231 in contact with the second inclined surface 211.
[0040] Specifically, there are two latches 21, located on both sides of the housing 1. When the user presses the unlock button 22, the transmission component 23 will move linearly along its designed trajectory. During this process, the first inclined surface 231 of the transmission component 23 comes into contact with the second inclined surface 211 of the latch 21, and the angular cooperation between the two converts the movement of the transmission component 23 in a certain direction into the movement of the latch 21 in a direction perpendicular to it.
[0041] In this embodiment, the unidirectional movement of the transmission member 23 is decomposed and converted into the synchronous vertical movement of the two side buckles 21 through the contact between the first inclined surface 231 and the second inclined surface 211. The synchronous operation of the two side buckles 21 greatly enhances the stability of the plug fixation and avoids the loosening or falling off caused by uneven force on one side.
[0042] like Figures 1-4 As shown, based on the above embodiment, the buckle 21 is provided with a first contact surface 213, and the guide base 3 is provided with a second contact surface 31, and the first contact surface 213 can contact the second contact surface 31.
[0043] In this embodiment, during the process of the transmission member 23 pushing the buckle 21 to retract via the first inclined surface 231 and the second inclined surface 211 on the buckle 21, the first contact surface 213 contacts the second contact surface 31, thereby limiting the retraction depth of the buckle 21 and the distance of movement of the transmission member 23, and protecting the internal electrical components from damage due to excessive pressing.
[0044] like Figures 1-4 As shown, based on the above embodiment, the unlocking button 22 is provided with a push post 221 and a fixing buckle 222, the transmission member 23 is provided with a fixing groove 232, the push post 221 contacts the transmission member 23, and the fixing buckle 222 is connected to the fixing groove 232.
[0045] In this embodiment, the unlock button 22 is connected to the transmission component 23 via the push post 221 and the fixing buckle 222. One end of the push post 221 contacts one side of the transmission component 23, and the fixing buckle 222 passes through the fixing groove 232 on the transmission component 23 and contacts the other side of the transmission component 23, so that the unlock button 22 can push the transmission component 23 and is also easy to disassemble.
[0046] like Figures 1-4 As shown, based on the above embodiment, the housing 1 is provided with a connecting through hole 12, and the push column 221 and the fixing buckle 222 contact the transmission member 23 through the connecting through hole 12.
[0047] In this embodiment, the push post 221 and the fixing buckle 222 contact the transmission component 23 through the connecting through hole 12, which not only ensures that the transmission component 23 can be effectively affected even if the unlocking button 22 is located outside the receiving cavity 11, but also effectively prevents external dust, moisture and other contaminants from entering the interior of the safety plug.
[0048] like Figures 1-4 As shown, based on the above embodiment, the buckle 21 is provided with a contact slope 212, which is located at the end of the buckle 21 away from the elastic reset member 24.
[0049] Specifically, when the safety plug is inserted into the socket, there is no need to press the unlock button 22. The contact slope 212 on the buckle 21 first contacts the upper end of the socket slot, thereby pushing the buckle 21 to overcome the action of the elastic reset member 24 and retract into the receiving cavity 11 under the action of pressure.
[0050] In this embodiment, the design of the contact slope 212 on the buckle 21 allows the user to insert the plug into the socket without pressing the unlock button 22, simplifying the user's operation steps and improving the ease of use.
[0051] like Figures 1-4 As shown, based on the above embodiment, both the guide base 3 and the buckle 21 are provided with elastic receiving grooves 32. The elastic reset member 24 is accommodated in the elastic receiving groove 32. One end of the elastic reset member 24 contacts the elastic receiving groove 32 on the guide base 3, and the other end of the elastic reset member 24 contacts the elastic receiving groove 32 on the buckle 21.
[0052] In this embodiment, since the two ends of the elastic reset member 24 are located in the elastic receiving groove 32 of the guide base 3 and the buckle 21 respectively, when the unlock button 22 is pressed to compress the elastic reset button, the elastic reset member 24 is precisely fixed in its position, so even if it is subjected to pressure on both sides, it will not shift or pop out unexpectedly.
[0053] like Figures 1-4 As shown, based on the above embodiment, the housing 1 includes an upper cover 13 and a lower cover 14. The upper cover 13 is provided with a connecting post 141, and the lower cover 14 is provided with a connecting hole 131. The lower cover 14 is accommodated in the connecting hole 131 through the connecting post 141 and thus connected to the upper cover 13.
[0054] Specifically, in order to securely connect the upper shell cover 13 and the lower shell base 14, while also taking into account the convenience of maintenance, a unique method is adopted in the design where the connecting post 141 and the connecting hole 131 cooperate. The connecting post 141 is precisely inserted into the corresponding connecting hole 131, and the tight connection between the upper and lower shells 1 is achieved through this accommodation relationship.
[0055] In this embodiment, this connection method ensures structural stability while also taking into full account the maintenance needs. When it is necessary to inspect, repair or replace the locking component 2 or electrical components in the receiving cavity 11, the interior can be quickly accessed simply by easily removing the upper cover 13. This design greatly facilitates subsequent maintenance work. Component replacement or repair can be completed efficiently without complicated tools or processes, thereby reducing downtime and improving work efficiency.
[0056] like Figures 1-4 As shown, based on the above embodiment, the housing 1 further includes a sleeve 15, which covers the upper cover 13 and partially wraps around the lower housing 14. The sleeve 15 has gripping portions 151 on both sides.
[0057] In this embodiment, the housing 15 is designed as a flexible component that can deform to a certain extent. By covering the upper housing cover 13 and partially enclosing the lower housing base 14, it not only prevents the upper housing cover 13 from falling off but also achieves a certain degree of sealing protection. The grips 151 on both sides make it difficult for the safety plug to fall off the user's hand when the user presses the unlock button 22 with one hand.
Claims
1. A safety plug with a lock, characterized in that, include: The housing has a receiving cavity; A locking assembly includes a latch, an unlock button, a transmission component, and a resilient reset component. The latch is movably connected to the housing, with one side of the latch disposed within the receiving cavity and the other side of the latch disposed outside the receiving cavity. The unlock button is movably connected to the housing, and a portion of the unlock button extends into the receiving cavity. The transmission component is received within the receiving cavity, with one end of the transmission component contacting the portion of the unlock button extending into the receiving cavity, and the other end of the transmission component contacting the side of the latch disposed within the receiving cavity. The resilient reset component is received within the receiving cavity, with one end contacting the housing and the other end of the resilient reset component contacting the latch.
2. A safety plug with a lock according to claim 1, characterized in that: It also includes a guide base disposed in the receiving cavity, the guide base being connected to the housing, the transmission member being slidably connected to the guide base, the buckle being slidably connected to the guide base, one end of the elastic reset member contacting the guide base, and the other end of the elastic reset member contacting the buckle.
3. A safety plug with a lock catch as claimed in claim 2, characterized in that: The transmission component is provided with a first inclined surface, and the buckle is provided with a second inclined surface, with the first inclined surface in contact with the second inclined surface.
4. A safety plug with a locking mechanism as described in claim 3, characterized in that: The buckle is provided with a first contact surface, and the guide base is provided with a second contact surface, wherein the first contact surface can contact the second contact surface.
5. A safety plug with a lock according to claim 3, characterized in that: The unlocking button is provided with a push post and a fixing buckle, the transmission component is provided with a fixing groove, the push post is in contact with the transmission component, and the fixing buckle is connected to the fixing groove.
6. A safety plug with a lock according to claim 5, characterized in that: The housing is provided with a connecting through hole, through which the push column and the fixing buckle contact the transmission component.
7. A safety plug with a lock according to claim 2, characterized in that: The buckle is provided with a contact slope, which is located at the end of the buckle away from the elastic reset member.
8. A safety plug with a lock according to claim 2, characterized in that: Both the guide base and the buckle are provided with elastic receiving grooves. The elastic reset member is accommodated in the elastic receiving groove. One end of the elastic reset member contacts the elastic receiving groove on the guide base, and the other end of the elastic reset member contacts the elastic receiving groove on the buckle.
9. A safety plug with a lock according to claim 1, characterized in that: The housing includes an upper cover and a lower cover. The upper cover is provided with a connecting post, and the lower cover is provided with a connecting hole. The lower cover is accommodated in the connecting hole through the connecting post and thus connected to the upper cover.
10. A safety plug with a locking mechanism as described in claim 9, characterized in that: The housing also includes a sleeve, which covers the upper shell cover and partially wraps around the lower shell base, and gripping portions are provided on both sides of the sleeve.