Protective door structure stable in opening and closing

By employing a sliding and flexible structure in the protective door assembly within the socket, the problem of unstable movement during plug insertion is solved, achieving stable opening and closing of the protective door and improving the socket's safety and convenience.

CN224217757UActive Publication Date: 2026-05-08DONGGUAN WONTRAVEL ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN WONTRAVEL ELECTRIC CO LTD
Filing Date
2025-04-16
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

The existing socket safety door structure is unstable during plug insertion and is prone to jamming, affecting user experience.

Method used

The protective door assembly, which adopts a sliding structure and an elastic structure design, includes a first protective door, a second protective door, and an elastic structure. The sliding structure slides within the mounting groove, while the elastic structure utilizes its elastic thrust to achieve stable opening and closing and prevent jamming.

Benefits of technology

The safety door improves stability during plug insertion, preventing jamming and ensuring a stable connection between the plug and conductive hardware, thus enhancing the safety and ease of use of the socket.

✦ Generated by Eureka AI based on patent content.

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Abstract

A protective door structure capable of being opened and closed stably comprises a support arranged in a socket, and an installation groove is formed in the top face of the support. The protective door assembly is connected in the mounting groove in a sliding manner; and a sliding structure for the protective door assembly to do reciprocating motion along a straight line is arranged between the protective door assembly and the mounting groove. According to the technical scheme provided by the embodiment, the sliding range of the protection door assembly is limited through the mounting groove, and in the process that the protection door assembly is moved to close and release the insertion position of the conductive five piece, mutual limitation can be carried out through the inner wall of the mounting groove, so that the moving stability is improved.
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Description

Technical Field

[0001] This utility model relates to the field of conversion socket technology, specifically to a protective door structure that allows for stable opening and closing. Background Technology

[0002] A socket is a commonly used electrical connection device that extends and expands the plugging position of available electrical equipment, making it convenient for electrical equipment to be used. Current sockets all have a housing with built-in conductive hardware, and the housing has corresponding holes on the conductive hardware. After the plug is inserted into the hole, it can be electrically connected to the conductive hardware to realize the circuit and supply power to the electrical equipment.

[0003] To improve the safety performance of sockets, a protective door is usually installed inside the socket housing to isolate the socket from the conductive hardware connection point. Only when the plug is inserted into the socket can the protective door be pushed to release the restriction on the conductive hardware, allowing the plug to connect with the conductive hardware. Therefore, when the socket is not in use, the socket and the conductive hardware are in a closed state, which can prevent foreign objects from falling into the socket and making electrical connections with the conductive hardware, thus preventing safety hazards.

[0004] In current sockets, the safety shutter consists of two opposing blocks with a spring between them. The spring provides elastic force to separate the blocks, blocking the connection of the conductive hardware. The blocks also have guide ramps that push against each other during socket insertion, causing the blocks to move and release via the conductive hardware, thus facilitating plug insertion. However, the current safety shutter structure is not very stable during plug insertion, sometimes jamming, making plug insertion less smooth and affecting normal user operation.

[0005] Therefore, there is an urgent need for a stable opening and closing protective door structure to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this utility model is to provide a protective door structure that is stable in opening and closing. To solve the above-mentioned technical problems, this utility model adopts the following technical solution:

[0007] A stable opening and closing protective door structure includes a bracket installed inside a socket, the top surface of which has a mounting groove; it also includes a protective door assembly slidably connected within the mounting groove, and a sliding structure is provided between the protective door assembly and the mounting groove for the protective door assembly to reciprocate in a straight line; the protective door assembly includes...

[0008] The first protective door is slidably disposed within the mounting groove along the sliding structure.

[0009] The second protective door is disposed opposite to the first protective door and is slidably disposed within the mounting groove along the sliding structure.

[0010] An elastic structure is provided between the first protective door and the second protective door, so that the first protective door and the second protective door can be elastically separated.

[0011] Furthermore, the sliding structure includes a sliding block disposed on either the bottom surface of the mounting groove or the bottom surface of the protective door assembly, and a sliding groove disposed on the other, wherein the sliding block and the sliding groove form a sliding pair.

[0012] Furthermore, the first protective door includes a first main body, and a first protective arm extends from both ends of the first main body, and at least one first guide slope is provided on the first protective arm; the second protective door includes a second main body corresponding to the first main body, and a second protective arm extends from both ends of the second main body, and a second guide slope is provided on the second protective arm.

[0013] Furthermore, the elastic structure includes two sets of elastic units, and the two sets of elastic units are respectively disposed at the corresponding ends of the first protective door and the second protective door. The elastic unit includes mounting posts respectively formed on the first protective door and the second protective door, and also includes elastic members with both ends fitted on the mounting posts.

[0014] Furthermore, an extension groove is provided on the inner wall of the mounting groove corresponding to the second protective door, extending along the sliding direction of the protective door assembly; the second main body is provided with an extension section, which is slidably connected within the extension groove.

[0015] Furthermore, an anti-single insertion structure is provided within the mounting groove. When a single hole of the socket is inserted, the anti-single insertion structure restricts the first or second protective door from pressing the elastic structure and causing it to move.

[0016] Furthermore, the sliding structure defines a gap between the bottom surface of the mounting groove and the protective door assembly;

[0017] The anti-single insertion structure is disposed between the first protective door and the second protective door, and includes two first limiting blocks. The two ends of each first limiting block correspond to the first extension section and the second extension section on the same side, respectively. When either the first protective arm or the second protective arm is tilted toward the bottom of the mounting groove, the end of the first limiting block contacts the end face of the tilted first protective arm or the second protective arm and restricts the first protective door or the second protective door from moving along the sliding structure.

[0018] Furthermore, the height of the first limiting block is the same as the interval distance defined between the bottom surface of the mounting groove and the protective door.

[0019] Furthermore, the anti-single insertion structure also includes two second limiting blocks, which are respectively disposed outside the two first limiting blocks, and the two ends of the two second limiting blocks are respectively disposed corresponding to the first extension section and the second extension section on the same side. The ends of the second limiting blocks are in contact with the end face of the inclined first protective arm or the second protective arm, and restrict the first protective door or the second protective door from moving along the sliding structure.

[0020] The beneficial effects of this utility model are as follows:

[0021] In the protective door structure provided in this embodiment, the protective door assembly is mounted within the mounting groove via a sliding structure. Thus, the opening and closing process is always completed within the mounting groove. The mounting groove limits the sliding range of the protective door assembly. Furthermore, during the movement of the protective door assembly to close and release the connection points of the conductive components, it mutually restricts movement with the inner wall of the mounting groove, thereby improving stability. It is worth noting that the sliding structure is positioned between the protective door assembly and the bottom surface of the mounting groove. This allows the sliding structure to maintain stable contact with the protective door assembly under its own weight, ensuring stability during the movement of either the first or second protective door and preventing jamming due to shaking. It is known that the protective door assembly comprises a first protective door, a second protective door, and an elastic structure. This allows the first and second protective doors to elastically separate under the elastic thrust of the elastic structure, thus sealing the plug-in position of the conductive hardware. When the plug is inserted into the socket and the first or second protective door is pushed, the first or second protective door compresses the elastic structure, thereby moving along the sliding structure. This releases the restriction on the plug-in position of the conductive hardware, allowing the plug to be inserted into the plug-in position of the conductive hardware to achieve electrical connection. Attached Figure Description

[0022] Figure 1This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the exploded structure of this utility model.

[0024] Figure 3 This is a schematic diagram of the protective door assembly in this utility model.

[0025] Figure 4 This is a top view of the present invention.

[0026] In the figure: 100-bracket; 110-mounting groove; 200-protective door assembly; 210-first protective door; 220-second protective door; 111-sliding block; 201-sliding groove; 211-first main body; 212-first protective arm; 213-first guide slope; 221-second main body; 222-second protective arm; 223-second guide slope; 300-elastic unit; 301-mounting post; 302-elastic element; 112-extension groove; 224-extension section; 113-first limiting block; 114-second limiting block; 225-adapter groove. Detailed Implementation

[0027] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0028] This utility model embodiment provides a stable opening and closing protective door structure. With this technical solution, when the protective door is blocking the conductive hardware and the plug touches and pushes the protective door to move, the protective door can move more stably, allowing the plug to be inserted into the conductive hardware. At the same time, after the plug is removed from the socket, the protective door can move stably under the action of the elastic structure to close the insertion position of the conductive hardware, thus achieving a protective effect.

[0029] like Figure 1-4As shown in the figure, the protective door structure with stable opening and closing provided in this embodiment of the utility model includes a bracket 100. It is understood that the bracket 100 is fitted inside the housing of the socket and is used to assemble conductive hardware and pin assemblies. It is worth noting that the structure of the bracket 100 and the structure of the conductive hardware and pin assemblies assembled on the bracket 100 can be implemented using existing technology, and are not limited in this embodiment. A mounting groove 110 is provided on the top surface of the bracket 100; it also includes a protective door assembly 200 slidably connected within the mounting groove 110, and a space is provided between the protective door assembly 200 and the mounting groove 110 for the protective door assembly. The protective door assembly 200 includes a first protective door 210, a second protective door 220, and an elastic structure. The first protective door 210 is slidably disposed within the mounting groove 110 along the sliding structure. The second protective door 220 is disposed opposite to the first protective door 210 and is slidably disposed within the mounting groove 110 along the sliding structure. The elastic structure is disposed between the first protective door 210 and the second protective door 220, so that the first protective door 210 and the second protective door 220 are elastically separated. An adapter groove 225 is provided on the second protective door 220, and the adapter groove 225 is a long strip structure.

[0030] In the process of use, in the protective door structure provided in this embodiment, the protective door assembly 200 is mounted within the mounting groove 110 via a sliding structure, so that the opening and closing process is completed within the mounting groove 110. The mounting groove 110 limits the sliding range of the protective door assembly 200, and during the process of the protective door assembly 200 moving to close and release the plug-in position of the conductive component, it can mutually restrict the movement with the inner wall of the mounting groove 110, thereby improving the stability of movement. It is worth noting that the sliding structure is set between the protective door assembly 200 and the bottom surface of the mounting groove 110, so that the protective door assembly 200 within the mounted mounting groove 110 can maintain a stable mutual contact state under the gravity of the protective door assembly 200, thereby maintaining stability during the movement of the first protective door 210 or the second protective door 220 and avoiding jamming due to shaking. It is understood that the protective door assembly 200 comprises a first protective door 210, a second protective door 220, and an elastic structure. This allows the first and second protective doors 210 and 220 to elastically separate under the elastic force of the elastic structure, sealing the insertion position of the conductive hardware. When a plug is inserted into the socket and the first or second protective door 210 is pushed, the first or second protective door 220 compresses the elastic structure, moving along the sliding structure. This releases the restriction on the insertion position of the conductive hardware, allowing the plug to be inserted into the conductive hardware to achieve electrical connection. The second protective door 210... The adapter slot 225 provided above 20 is compatible with the ground wire plug on the conductive hardware. The ground wire is usually not energized on the socket, so the ground wire plug does not need to be blocked. At the same time, since the second protective door 220 needs to slide along the bottom of the mounting groove 110, the adapter slot 225 is designed as a long strip structure to facilitate the insertion of the ground wire plug. In this embodiment, in order to facilitate the compatibility of the adapter slot with ground wire plugs of different specifications, various internal structures are provided on the inner wall of the length of the adapter slot 225. Specifically, in this embodiment, concave arcs of different radii are provided so that it can be plugged with ground wire plugs of different specifications and in a cylindrical structure.

[0031] In this embodiment, as Figure 2As shown, the sliding structure includes a sliding block 111 disposed on either the bottom surface of the mounting groove 110 or the bottom surface of the protective door assembly 200, and a sliding groove 201 disposed on the other. The sliding block 111 and the sliding groove 201 form a sliding pair. In this embodiment, the sliding block 111 is formed on the bottom of the mounting groove 110 and extends along the length of the mounting groove 110. Three sliding blocks 111 are arranged side by side to improve stability. Meanwhile, the sliding groove 201 is formed on the bottom surface of the protective door assembly 200. That is, the bottom surfaces of the first protective door 210 and the second protective door 220 are both provided with a sliding groove 201 that forms a sliding pair with the sliding block 111, so that the first protective door 210 and the second protective door 220 can slide stably within the mounting groove 110 under the action of the sliding structure. By setting the sliding blocks 111 to three side by side, the stability of the protective door assembly 200 sliding along the sliding structure can be enhanced, the shaking situation can be reduced, and the jamming situation can be avoided.

[0032] In this embodiment, as Figure 3 As shown, the first protective door 210 includes a first main body 211, and first protective arms 212 are respectively extended from both ends of the first main body 211. At least one first guide slope 213 is provided on the first protective arm 212. The second protective door 220 includes a second main body 221 corresponding to the first main body 211, and second protective arms 222 are respectively extended from both ends of the second main body 221. A second guide slope 223 is provided on the second protective arm 222.

[0033] During the process of blocking the insertion position of the conductive hardware, the first protective arm 212 and the second protective arm 222 correspond to each other with the insertion position of the conductive hardware, thereby blocking the insertion position of the conductive hardware. When the plug abuts against the first guide slope 213 or the second guide slope 223, the first protective door 210 or the second protective door 220 can be pushed by the guide slope, thereby releasing the blocked conductive hardware insertion position by overcoming the elastic thrust of the elastic structure, thus facilitating the plug to be inserted into the conductive hardware. It can be imagined that the sliding groove 201 that slides and cooperates with the sliding block 111 is opened on the first main body 211 and the second main body 221. Since the sliding structure is set at the center line of the protective door assembly 200, the stability of movement can be ensured after the protective arms at both ends of the main body are subjected to the same force of resistance.

[0034] In this embodiment, an example of the specific structure of the elastic structure is given, such as... Figure 3As shown, the elastic structure includes two sets of elastic units 300, which are respectively disposed at the corresponding ends of the first protective door 210 and the second protective door 220. Each elastic unit 300 includes mounting posts 301 formed on the first protective door 210 and the second protective door 220, and elastic members 302 with both ends fitted onto the mounting posts. By providing two sets of single-row units, respectively disposed between the first protective arm 212 and the second protective arm 222 on the same side, elastic thrust can be simultaneously provided to both ends of the first protective door 210 and the second protective door 220, ensuring balanced load distribution and further guaranteeing the stability of the first protective door 210 and the second protective door 220 during movement.

[0035] To further improve the stability of the movement of the protective door assembly 200, such as Figure 2-3 As shown, an extension groove 112 extending along the sliding direction of the protective door assembly 200 is also provided on the inner wall of the mounting groove 110 corresponding to the second protective door 220; the second main body 221 is provided with an extension section 224, which is slidably connected within the extension groove 112. That is, when the second protective door 220 moves, the extension section 224 of the second main body 221 can be limited to slide within the extension groove 112. By slidingly connecting within the extension groove 112, the stability of the protective door assembly is improved. At the same time, the adapter groove 225 is formed on the extension section.

[0036] To prevent the protective door from being pushed and disengaging from the conductive hardware when a foreign object is inserted into a single hole of the socket, thus causing an electric shock accident due to electrical connection between the foreign object and the conductive hardware, an anti-single insertion structure is also provided within the mounting groove 110. When a single hole of the socket is inserted, the anti-single insertion structure restricts the movement of the elastic structure pressed by the first protective door 210 or the second protective door 220.

[0037] During use, the anti-single insertion structure can restrict the movement of the first protection door 210 or the second protection door 220 when a foreign object is inserted into only one hole of the socket, thereby ensuring the reliability of the protection door and improving the safety performance of the socket.

[0038] In this embodiment, as Figure 2 , 4As shown, the sliding structure defines a gap between the bottom surface of the mounting groove 110 and the protective door assembly 200; at the same time, the anti-single insertion structure is set between the first protective door 210 and the second protective door 220, which includes two first limiting blocks 113. The two ends of each first limiting block 113 correspond to the first extension section 224 and the second extension section 224 on the same side, respectively. When any one of the first protective arms 212 or the second protective arm 222 is tilted toward the bottom of the mounting groove 110, the end of the first limiting block 113 contacts the end face of the tilted first protective arm 212 or the second protective arm 222 and restricts the first protective door 210 or the second protective door 220 from moving along the sliding structure.

[0039] It is conceivable that the live socket is the socket corresponding to the neutral or live wire. Therefore, in this embodiment, the socket for foreign object insertion is the socket corresponding to the live or neutral wire. The plug position on the conductive hardware corresponding to the live or neutral wire is also the socket position for the protective door to close separately. When a foreign object is inserted into one of the sockets, in one case, the plug abuts against one of the first protective arms 212 and presses it toward the mounting groove 110. Since the first protective arm 212 on one side of the first protective door 210 is under force, the force-bearing side of the first protective door 210 tilts, and the side of the first protective arm 212 under downward pressure contacts the end face of the first limiting position, thereby limiting the movement of the first protective arm 212 along the sliding joint due to the force of the first guide slope 213, and preventing the plug position of the conductive hardware from being opened.

[0040] In this embodiment, to improve the stability of the protective door assembly 200 during sliding, the height of the first limiting block 113 is the same as the distance between the bottom surface of the mounting groove 110 and the protective door. That is, after the plug is inserted into the socket and abuts against the guide slope, one of the protective doors slides along the sliding structure under the action of the guide slope. At this time, the top surface of the first limiting block 113 contacts the bottom surface of the protective door, thereby providing support for the movement of the protective door and improving the stability of the protective door opening and closing at the insertion position.

[0041] To further enhance the anti-single insertion effect, the anti-single insertion structure also includes two second limiting blocks 114. The second limiting blocks 114 are respectively disposed outside the two first limiting blocks 113, and their ends correspond to the first extension section 224 and the second extension section 224 on the same side, respectively. The ends of the second limiting blocks 114 contact the end faces of the inclined first protective arm 212 or second protective arm 222, restricting the movement of the first protective door 210 or second protective door 220 along the sliding structure. As can be seen from the above, the function of the second limiting blocks 114 is the same as that of the first limiting blocks 113; their purpose is to further enhance the anti-single insertion effect. Since the second limiting blocks 114 are disposed outside the first limiting blocks 113, they correspond to the outermost edge of the first protective arm 212 or second protective arm 222. When the first protective arm 212 tilts slightly, the second limiting blocks 114 can limit the ends of the first protective arm 212 or second protective arm 222, preventing movement.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A protective door structure with stable opening and closing, comprising a bracket installed inside a socket, characterized in that, The top surface of the bracket is provided with a mounting groove; it also includes a protective door assembly slidably connected within the mounting groove, and a sliding structure is provided between the protective door assembly and the mounting groove for the protective door assembly to reciprocate along a straight line; the protective door assembly includes... The first protective door is slidably disposed within the mounting groove along the sliding structure. The second protective door is disposed opposite to the first protective door and is slidably disposed within the mounting groove along the sliding structure. An adapter groove, which is elongated in shape, is provided on the second protective door. An elastic structure is provided between the first protective door and the second protective door, so that the first protective door and the second protective door can be elastically separated.

2. The protective door structure with stable opening and closing according to claim 1, characterized in that, The sliding structure includes a sliding block disposed on either the bottom surface of the mounting groove or the bottom surface of the protective door assembly, and a sliding groove disposed on the other, wherein the sliding block and the sliding groove form a sliding pair.

3. The protective door structure with stable opening and closing according to claim 1, characterized in that, The first protective door includes a first main body, and a first protective arm extends from both ends of the first main body, and at least one first guide slope is provided on the first protective arm; the second protective door includes a second main body corresponding to the first main body, and a second protective arm extends from both ends of the second main body, and a second guide slope is provided on the second protective arm.

4. The protective door structure with stable opening and closing according to claim 1, characterized in that, The elastic structure includes two sets of elastic units, and the two sets of elastic units are respectively disposed at the corresponding ends of the first protective door and the second protective door. Each elastic unit includes a mounting post formed on the first protective door and the second protective door, and also includes an elastic element with both ends fitted on the mounting post.

5. The protective door structure with stable opening and closing according to claim 3, characterized in that, An extension groove is also provided on the inner wall of the mounting groove corresponding to the second protective door, extending along the sliding direction of the protective door assembly; the second main body is provided with an extension section, the extension section is slidably connected within the extension groove, and the adapter groove is formed on the extension section.

6. The protective door structure with stable opening and closing according to claim 3, characterized in that, The mounting groove is also provided with an anti-single insertion structure. When a single hole of the socket is inserted, the anti-single insertion structure restricts the first or second protective door from pressing the elastic structure and causing it to move.

7. The protective door structure with stable opening and closing according to claim 6, characterized in that, The sliding structure defines a gap between the bottom surface of the mounting groove and the protective door assembly; The anti-single insertion structure is disposed between the first protective door and the second protective door, and includes two first limiting blocks. The two ends of each first limiting block correspond to the first extension section and the second extension section on the same side, respectively. When either the first protective arm or the second protective arm is tilted toward the bottom of the mounting groove, the end of the first limiting block contacts the end face of the tilted first protective arm or the second protective arm and restricts the first protective door or the second protective door from moving along the sliding structure.

8. The protective door structure with stable opening and closing according to claim 7, characterized in that, The height of the first limiting block is the same as the interval distance defined between the bottom surface of the mounting groove and the protective door.

9. The protective door structure with stable opening and closing according to claim 7, characterized in that, The anti-single insertion structure also includes two second limiting blocks, which are respectively disposed outside the two first limiting blocks. The two ends of the two second limiting blocks are respectively disposed corresponding to the first extension section and the second extension section on the same side. The ends of the second limiting blocks are in contact with the end face of the inclined first protective arm or the second protective arm, and restrict the first protective door or the second protective door from moving along the sliding structure.