Protective door structure

By optimizing the design of the sliding parts and the latching structure, the problem of inconvenient operation of the existing protective door structure has been solved. This reduces the user's operating effort while ensuring safety, thus improving the efficiency and safety of the power strip.

CN223898666UActive Publication Date: 2026-02-10GUANGDONG ZHONGLI FUMIN ELECTRICAL APPLIANCE TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202520433409.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-13
Publication Date
2026-02-10
Estimated Expiration
2035-03-13

AI Technical Summary

Technical Problem

The existing safety door structure is inconvenient to operate during use, requiring users to exert considerable force to open it, which affects safety and efficiency in emergency situations.

Method used

The design employs a sliding component and a locking protrusion structure, connected by an elastic element. When force is applied to one side, the sliding component abuts against the locking protrusion to prevent the safety door from opening accidentally; when force is applied to both sides, it moves parallel to ensure that the plug can be quickly connected to the power supply.

Benefits of technology

It significantly reduces the force required for user operation, improves ease of use and safety, and enhances the safety performance and efficiency of power strips.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of protective doors, and mainly relates to a protective door structure which comprises a base and a sliding piece arranged on the base. The base is provided with a protection area of a plug position for inserting a plug; a support is arranged in the protection area in an extending mode in the thickness direction of the base. The sliding piece is provided with a cavity allowing the support to penetrate through, and one side of the cavity is connected with one side of the support through an elastic piece. A frame is arranged on the periphery of the protection area, and the protection area is provided with a first clamping protrusion fixedly connected with the frame and a second clamping protrusion extending in the thickness direction of the base. When one side of the sliding piece is stressed to slide, the sliding piece abuts against the first clamping protrusion or the second clamping protrusion. According to the protection door, an existing protection door structure is improved, and when a user inserts or pulls out the plug, the sliding piece can flexibly move under the action of the elastic piece; the first clamping protrusion or the second clamping protrusion abuts against the sliding piece when the single side of the sliding piece is stressed, and the protection door is prevented from being opened accidentally.
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Description

Technical Field

[0001] This utility model belongs to the field of protective door technology, and specifically relates to a protective door structure. Background Technology

[0002] With increasing public awareness of safe electricity use, safety doors (or protective doors), as a key safety protection structure for power strips and sockets, have become an important part of national standards. The purpose of safety doors is to prevent foreign objects from entering the socket, avoiding the risk of electric shock to children, and preventing short circuits or other safety hazards caused by improper plug insertion. Therefore, the reliability and practicality of safety doors directly affect the overall safety performance of power strips.

[0003] Existing safety door structures, exemplified by those from companies like Bull, typically feature a protrusion at the bottom of one side of the safety door. When the plug is inserted, if force is applied from one side, the protrusion engages with a groove in the base, restricting the door's movement. This design effectively prevents the safety door from being opened unintentionally. However, this type of structure has certain technical drawbacks. In practical applications, users often need to exert considerable force to open the safety door, reducing its efficiency during normal use. In emergencies, users may be unable to operate quickly, severely impacting safety.

[0004] Therefore, it is urgent to improve the existing protective door structure to solve the above-mentioned technical defects. Utility Model Content

[0005] The purpose of this utility model is to provide a protective door structure that can improve the efficiency of power strip usage while preventing the plug from opening due to insertion on only one side, in order to address the shortcomings of the existing technology.

[0006] To achieve the above technical objectives, this application implements the following technical solution:

[0007] A protective door structure includes a base and a sliding member disposed on the base;

[0008] The base is provided with a protection zone for the plug insertion point; a bracket extends along the thickness of the base from the protection zone.

[0009] The sliding component has a cavity for the bracket to pass through, and one side of the cavity is connected to one side of the bracket by an elastic component.

[0010] The protected area is surrounded by a frame, and the protected area is provided with a first locking protrusion that is fixedly connected to the frame and a second locking protrusion that extends along the thickness direction of the base;

[0011] When the slider slides under unilateral force, it abuts against the first or second locking protrusion. The above technical solution produces the following technical effects:

[0012] This application optimizes the interaction between the sliding member and the locking protrusions, significantly reducing the force required for user operation and improving ease of use while ensuring safety. Specifically, when the user inserts or removes the plug, the sliding member can move flexibly under the action of the elastic member; while the first and second locking protrusions abut against the sliding member when force is applied to one side, preventing the safety door from opening accidentally. When force is applied to both sides of the sliding member, the sliding member moves parallel above the locking protrusions, unaffected by the interference of the first and second locking protrusions, thus allowing the plug to quickly connect to the power supply. Based on this, this utility model not only effectively solves the problem of inconvenient operation of existing safety door structures, but also greatly improves the safety performance and efficiency of the power strip.

[0013] As a further improvement to the protective door structure of this application, the sliding member is provided with a body and a first abutting part and a second abutting part extending on both sides of the body along the length direction of the sliding member;

[0014] When the first abutting part is subjected to force on one side, the first abutting part abuts against the side of the first latching protrusion away from the frame;

[0015] When the second abutment is subjected to force on one side, the second abutment abuts against the second latching protrusion.

[0016] As a further improvement to the protective door structure of this application, both the first abutting part and the second abutting part are provided with insertion holes for the plug to pass through.

[0017] As a further improvement to the protective door structure of this application, each socket is provided with a pushing part, which is inclined. In the specific implementation process, when a single pushing part is subjected to force, it drives the sliding member to abut against the first or second locking protrusion.

[0018] As a further improvement to the protective door structure of this application, the thickness of the first abutting part decreases as the distance from the main body increases; the thickness of the second abutting part decreases as the distance from the main body increases.

[0019] As a further improvement to the protective door structure of this application, the second abutment is provided with at least one fixing groove, which is used to engage the second abutment with the second latching protrusion on the base when the second abutment is subjected to force on one side. When the first abutment is subjected to force on one side, the first abutment abuts against the side of the first latching protrusion away from the frame.

[0020] As a further improvement to the protective door structure of this application, protrusions are provided on both sides of the sliding member along the thickness direction, and the protrusions are arranged parallel to the length direction of the sliding member.

[0021] As a further improvement to the protective door structure of this application, the elastic element is a spring element.

[0022] As a further improvement to the protective door structure of this application, a first fixing member is fixedly connected to one side of the cavity, and a second fixing member is provided on one side of the bracket. One end of the spring is fixedly connected to the first fixing member, and the other end of the spring is fixedly connected to the second fixing member. This ensures that the sliding part will not fall off during the assembly process of the protective door structure of this application, and at the same time, the bracket will also prevent the sliding part from falling off the base during the assembly process.

[0023] As a further improvement to the protective gate structure of this application, the protected area is provided with two insertion points. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0025] Figure 1 This is a schematic diagram of the protective door structure in Embodiment 1 of this utility model;

[0026] Figure 2 This is a side view of the protective door structure in Embodiment 1 of this utility model;

[0027] Figure 3 for Figure 2 A cross-sectional view along CC;

[0028] Figure 4 This is one of the cross-sectional views of the protective door structure in Embodiment 2 of this utility model;

[0029] Figure 5 This is a second cross-sectional view of the protective door structure in Embodiment 2 of this utility model;

[0030] Figure 6 This is a schematic diagram of the sliding component in the protective door structure of Embodiment 3 of this utility model;

[0031] Figure 7 This is a side view of the sliding member in the protective door structure of Embodiment 3 of this utility model;

[0032] Figure 8 This is a schematic diagram of the base structure in the protective door structure of Embodiment 3 of this utility model;

[0033] in:

[0034] 1-Base;

[0035] 11-Protected Area;

[0036] 111-Interpolation;

[0037] 112-Standard;

[0038] 1121 - Second fastener;

[0039] 113 - Border;

[0040] 1131 - First convex cam;

[0041] 1132 - Second convex cam;

[0042] 12 - Empty space area;

[0043] 2-Sliding component;

[0044] 21-Cavity;

[0045] 211-First fastener;

[0046] 22-Ontology;

[0047] 23-First contact section;

[0048] 231-Socket;

[0049] 2311 - Promotion Department;

[0050] 24 - Second contact section;

[0051] 241-Fixing slot;

[0052] 25 - Protrusion;

[0053] 3-Elastic element. Detailed Implementation

[0054] 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 a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application.

[0055] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0056] Although this application discloses preferred embodiments as described above, it is not intended to limit the claims. Any person skilled in the art can make several possible changes and modifications without departing from the concept of this application. Therefore, the scope of protection of this application should be determined by the scope defined in the claims of this application.

[0057] The present invention will be further described in detail below with reference to specific embodiments, but the embodiments of the present invention are not limited thereto.

[0058] Implementation Method 1

[0059] like Figure 1 - Figure 3 As shown, this application improves the existing protective door structure to address its technical defects. Specifically, the protective door structure includes a base 1 and a sliding member 2 disposed on the base 1; the base 1 is provided with a protective zone 11 for a plug insertion position 111; along the thickness direction of the base 1 (e.g., ... Figure 1 (As shown in the Z-axis direction), the protection zone 11 extends with a support 112; the sliding member 2 is provided with a cavity 21 for the support 112 to pass through, and one side of the cavity 1 is connected to one side of the support 112 by an elastic member 3; a frame 113 is provided around the protection zone 11, and the protection zone 11 is provided with a first latching protrusion 1131 fixedly connected to the frame 113 and along the thickness direction of the base 1 (as shown in the Z-axis direction), the sliding member 2 is provided with a cavity 21 for the support 112 to pass through, and one side of the cavity 1 is connected to one side of the support 112 by an elastic member 3; a frame 113 is provided around the protection zone 1, and the protection zone 1 is provided with a first latching protrusion 1131 fixedly connected to the frame 113 and a first latching protrusion 1131 fixed Figure 1 The second locking protrusion 1132 extends along the Z-axis direction (as shown); when the slider 2 is slid under force on one side, the slider 2 abuts against the first locking protrusion 1131 or the second locking protrusion 1132. In addition, the elastic member 3 is a spring member.

[0060] The working principle of the aforementioned protective door structure is as follows: When the user inserts or removes the plug, the sliding member 2 can move flexibly under the action of the elastic member 3. Specifically, the bracket 112 is connected to the sliding member 2 through the cavity 21 and maintains a certain tension under the action of the elastic member 3. When a plug on one side (or other conductive body is inserted, causing the sliding member 2 to be subjected to force on one side) is inserted, the sliding member 2 rotates to one side under the push of the plug, so that the first abutting part 23 of the sliding member 2 abuts against the first latching protrusion 1131 or the second abutting part 24 abuts against the second latching protrusion 1132, preventing the protective door from being opened accidentally.

[0061] Specifically, when both sides of the slider 2 are subjected to force (i.e., when both electrodes of the plug are inserted), the slider 2 moves parallel above the first latching protrusion 1131 and the second latching protrusion 1132, unaffected by either the first latching protrusion 1131 or the second latching protrusion 1132, thus allowing the plug to be quickly connected to the power supply. The extended design of the bracket 112 provides sufficient support within the protection zone 11, ensuring the stability of the slider 2 during movement. Furthermore, the first latching protrusion 1131 and the second latching protrusion 1132 provide additional safety; when the slider 2 is subjected to force on only one side, the first latching protrusion 1131 and the second latching protrusion 1132 can effectively abut against the slider 2, preventing accidental slippage.

[0062] Through the above design, this utility model not only effectively solves the problem of inconvenient operation of existing protective door structures, but also greatly improves the safety performance and usage efficiency of power strips.

[0063] Furthermore, along the length direction of the slider 2 (e.g.) Figure 3 (The length direction shown is the X-axis direction). The slider 2 is provided with a body 22 and a first abutment portion 23 and a second abutment portion 24 extending on both sides of the body 22. When the first abutment portion 23 is subjected to force on one side, the first abutment portion 23 abuts against the side of the first latching protrusion 1131 away from the frame 113, forming a stable support structure and preventing the slider 2 from moving excessively. When the second abutment portion is subjected to force on one side, the second abutment portion abuts against the second latching protrusion. Thus, the slider 2 can remain stable under different force conditions, effectively avoiding accidental sliding caused by unilateral force.

[0064] Specifically, when the user inserts or removes the plug, the sliding member 2, under the action of the elastic member 3, can move along the length direction of the base 1 (e.g., Figure 1The sliding member 2 moves flexibly (in the X-axis direction as shown) to ensure smooth insertion and removal of the plug. Simultaneously, the first locking protrusion 1131 and the second locking protrusion 1132 abut against the sliding member 2 when force is applied to one side of the sliding member 2, effectively preventing accidental opening of the safety door and thus improving safety. When force is applied to both sides of the sliding member 2, the sliding member 2 moves parallel above the first locking protrusion 1131 and the second locking protrusion 1132, unaffected by their movement, allowing the plug to be quickly connected to the power supply. In practical implementation, the application of the spring component in the sliding member 2 makes the elastic connection more reliable and extends the service life of the safety door. Through these optimized design details, this utility model not only solves the problem of inconvenient operation of existing safety door structures but also significantly improves the safety performance and efficiency of the power strip.

[0065] Implementation Method 2

[0066] like Figures 1-5 As shown, unlike Embodiment 1, to further improve the stability of the sliding block of the protective door under force, both the first abutment portion 23 and the second abutment portion 24 are provided with insertion holes 231 for the plug to pass through. Therefore, when the plug is inserted or removed, it can smoothly enter or leave the socket through the insertion holes 231, avoiding the problem of difficulty in insertion and removal caused by unreasonable design of the insertion holes 231.

[0067] Furthermore, each of the insertion holes 231 is provided with a pushing part 2311, which is located along the thickness direction of the sliding member 2 (e.g., Figure 3 The Z-axis direction is shown to be tilted. In specific implementation, the push part 2311 is designed so that when the plug is inserted into the socket 231, it contacts the push part 2311, thereby pushing the slider 2 to slide until the plug falls into the insertion position 111 located in the protection zone 11 of the base 1. The working principle of the above technical solution is that, through the tilted design of the push part 2311, the plug can generate a tilted component force during insertion. This component force not only helps the slider 2 to move smoothly, but also effectively reduces the force required by the user during operation. In addition, the design of the push part 2311 ensures that the plug maintains stable contact during insertion and removal, avoiding jamming or damage caused by improper angle.

[0068] like Figure 4 As shown, when the pushing part 2311 located at the first abutting part 23 applies a certain pressure, while the pushing part 2311 of the second abutting part 24 is not subjected to pressure, the abutting part will tilt at a certain angle, thereby causing... Figure 4 The first abutment portion 23, as shown, abuts against the first latching protrusion 1131, thereby preventing the sliding member 2 from moving excessively due to unilateral force, ensuring the stability and safety of the protective door. Figure 5As shown, the pushing part 2311 of the second abutment part 24 can also tilt when subjected to pressure, so that the fixing groove 241 is tightly engaged with the second latching protrusion 1132 on the base 1, further enhancing the stability of the overall structure. With this design, even in complex usage environments, the protective door can maintain good working condition, avoiding accidental opening or other safety hazards caused by structural instability.

[0069] Furthermore, as the distance between the first abutting portion 23 and the body 22 increases, the thickness of the first abutting portion 23 decreases accordingly; similarly, as the distance between the second abutting portion 24 and the body 22 increases, the thickness of the second abutting portion 24 decreases accordingly. For example... Figure 3 As shown, the varying thickness design of the first abutment portion 23 and the second abutment portion 24 not only optimizes the force distribution but also allows the entire protective door structure to better disperse pressure when under stress, reducing the possibility of the slider 2 failing to slide even when both the first abutment portion 23 and the second abutment portion 24 are under stress. This reduces the technical drawback of requiring users to apply significant force to insert the plug into the socket 111, thereby improving the overall durability and stability of the structure. Specifically, as the distance from the body 22 increases, the thickness of the first abutment portion 23 and the second abutment portion 24 gradually decreases. This gradual design makes the stress points more uniform, reduces local stress concentration, and extends the service life of the protective door.

[0070] Furthermore, the locking groove 241 of the second abutment portion 24 engages with the locking protrusion 1132 on the base 1, further enhancing the stability of the protective door under unilateral force. The number and position of the locking grooves 241 are designed to ensure that the second abutment portion 24 can be tightly engaged with the base 1 under any force, preventing the sliding member 2 from moving accidentally.

[0071] Furthermore, along the thickness direction of the slider 2 (e.g.) Figure 7 As shown in the Z-axis direction, the slider 2 has protrusions 25 on both sides, and the protrusions 25 are perpendicular to the length direction of the slider 2 (e.g., along the Z-axis direction). Figure 7 (As shown in the X-axis direction) Parallel arrangement. Regarding the design of the protrusion 25, the protrusion 25, arranged along the thickness direction of the slider 2, is not only parallel to the length direction of the slider 2. The width and smoothness of the protrusion 25 have been optimized through multiple tests to ensure its smoothness and safety during the opening and closing of the protective door. A protective door without the protrusion 25 will experience friction between the slider and the base 1 frame 113, affecting the sliding of the slider and thus the lifespan of the entire protective door.

[0072] In summary, through the above series of designs and optimizations, the protective door structure of this utility model not only effectively solves the problem of inconvenient operation in the prior art, but also greatly improves the safety performance and usage efficiency of the power strip, providing users with a safer and more convenient user experience.

[0073] Other aspects that are the same as in Implementation Method 1 will not be described again in this implementation method.

[0074] Implementation Method 3

[0075] like Figures 1-8 As shown, unlike embodiment 1, in order to further improve the sliding stability of the sliding member 2 in the protective door structure of this application, a first fixing member 211 is fixedly connected to one side of the cavity 21, a second fixing member 1121 is provided on one side of the bracket 112, one end of the spring is fixedly connected to the first fixing member 211, and the other end of the spring is fixedly connected to the second fixing member 1121.

[0076] During installation, one end of the spring is fixedly connected to one side of the cavity 21 via the first fixing member 211, and the other end is fixedly connected to one side of the bracket 112 via the second fixing member 1121, ensuring that the spring maintains appropriate tension during the movement of the sliding member 2. Simultaneously, during assembly, the sliding member 2 will not detach from the protective door structure of this application, and the bracket 112 will also prevent the sliding member from falling off the base during assembly.

[0077] By implementing the above technical solution, this utility model successfully solves the problem of inconvenient operation of existing protective door structures, while significantly improving the safety performance and efficiency of power strips, providing users with a more convenient and safer electricity experience.

[0078] Furthermore, the protected area 11 is equipped with two sockets 111, which are used for the neutral wire plug and the live wire plug respectively, ensuring the flexibility and safety of power access.

[0079] Other aspects that are the same as in Implementation Method 1 will not be described again in this implementation method.

[0080] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A protective door structure, characterized in that, Includes a base (1) and a sliding member (2) disposed on the base (1); The base (1) is provided with a protection zone (11) for a plug insertion position (111); along the thickness direction of the base (1), a bracket (112) extends from the protection zone (11); The sliding member (2) is provided with a cavity (21) through which the bracket (112) passes, and one side of the cavity (21) is connected to one side of the bracket (112) by an elastic member (3). The protected area (11) is surrounded by a frame (113), and the protected area (11) is provided with a first latching protrusion (1131) fixedly connected to the frame (113) and a second latching protrusion (1132) extending along the thickness direction of the base; When the slider (2) is slid under force on one side, the slider (2) abuts against the first latch (1131) or the second latch (1132).

2. The protective door structure according to claim 1, characterized in that, Along the length direction of the slider (2), the slider (2) is provided with a body (22) and a first abutting part (23) and a second abutting part (24) extending on both sides of the body (22); When the first abutting part (23) is subjected to force on one side, the first abutting part (23) abuts against the side of the first latching protrusion (1131) away from the frame (113); When the second abutment (24) is subjected to force on one side, the second abutment (24) abuts against the second latch (1132).

3. The protective door structure according to claim 2, characterized in that, Both the first abutting part (23) and the second abutting part (24) are provided with a socket (231), which is used for the plug to pass through.

4. The protective door structure according to claim 3, characterized in that, Each of the sockets (231) is provided with a pushing part (2311), and the pushing part (2311) is inclined.

5. A protective door structure according to claim 2, characterized in that, The thickness of the first abutting part (23) decreases as the distance from the body (22) increases; the thickness of the second abutting part (24) decreases as the distance from the body (22) increases.

6. A protective door structure according to claim 2, characterized in that, The second abutment (24) is provided with at least one fixing groove (241), which is used to engage the second abutment (1132) on the base when the second abutment (24) is subjected to force on one side.

7. The protective door structure according to claim 1, characterized in that, Along the thickness direction of the slider (2), protrusions (25) are provided on both sides of the slider (2), and the protrusions (25) are arranged parallel to the length direction of the slider (2).

8. The protective door structure according to claim 1, characterized in that, The elastic element (3) is a spring.

9. A protective door structure according to claim 8, characterized in that, A first fixing member (211) is fixedly connected to one side of the cavity (21), and a second fixing member (1121) is provided on one side of the bracket (112). One end of the spring is fixedly connected to the first fixing member (211), and the other end of the spring is fixedly connected to the second fixing member (1121).

10. A protective door structure according to claim 1, characterized in that, The protected area (11) is provided with two insertion points (111).