Protective door structure of direct current socket
By designing the protective door structure of the DC socket, the coupling of the limit structure and elastic components can achieve automatic occlusion of the plug hole, solving the problem of poor safety of traditional sockets, improving safety and production efficiency, reducing costs, and reducing the socket volume.
Patent Information
- Application Number
- CN202421911594.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-08-08
AI Technical Summary
The socket of a traditional socket is exposed to the socket, which can easily cause small conductive objects to enter and cause electric shock, especially children's fingers to be easily electrocuted, which poses a major safety hazard.
A protective door structure of a DC socket is designed, including a first protective door, a second protective door and a third protective door. Through the coordination of the limit structure and elastic components, the plug hole is blocked and protected, ensuring that the protective door is opened smoothly when the plug is inserted, and automatically blocked when it is pulled out, and the structure is modular to simplify installation.
It improves the safety of the socket, prevents electric shock accidents, reduces the volume of the socket, reduces production costs, improves production and installation efficiency, and makes the socket structure compact and beautiful.
Smart Images
Figure CN223297097U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electrical appliances, in particular to a protective door structure of a DC socket. Background Art
[0002] Sockets, also known as power outlets and switch sockets, are commonly used components in electrical connections. Traditional sockets have exposed sockets, making it easy for small conductive objects to fall into the socket and contact the socket, potentially causing electric shock. This is especially true for children, who can easily reach into the socket and touch the socket, potentially causing an electric shock. These traditional sockets pose a significant safety hazard. Utility Model Content
[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a protective door structure for a DC socket which has high safety, uses fewer parts and is easy to assemble.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] The present application provides a protective door structure for a DC socket, comprising a first protective door, a second protective door, and a third protective door, respectively used to shield a first plug hole, a second plug hole, and a third plug hole of the socket. The second plug hole and the third plug hole are rectangular structures, and the length side of the second plug hole is in the second direction, and the length side of the third plug hole is in the first direction.
[0006] The first protective door includes a first plug contact area with an inclined surface structure, and the first plug contact area of the first protective door blocks the first plug hole.
[0007] The first protection door and the second protection door are integrally formed and configured to move along a first direction. The elastic component is connected to the first protection door or the second protection door to drive the first protection door and the second protection door to move along the first direction to respectively cover the first plug hole and the second plug hole.
[0008] The third protection door is configured to move along a second direction, the second direction being perpendicular to the first direction. A limiting structure is provided between the first protection door or the second protection door and the third protection door, the limiting structure being used to limit the third protection door from moving along the second direction from the third plug hole toward the second plug hole, so that the third protection door is located at a position covering the third plug hole.
[0009] When the first plug contact area of the first protective door is driven by force to move the first protective door and the second protective door along the first direction, the first protective door and the second protective door avoid the first plug hole and the second plug hole. At the same time, the limiting structure releases its limit on the third protective door, and the third protective door moves from a position blocking the third plug hole along the second direction to approach the second plug hole and avoid the third plug hole.
[0010] In one possible implementation, the limiting structure includes a first limiting portion provided on the second protective door and a second limiting portion provided on the third protective door, the first limiting portion and the second limiting portion are mutually matching inclined surfaces, and the obtuse angle or acute angle formed by the first limiting portion and the second direction is complementary to the acute angle or obtuse angle formed by the second limiting portion and the second direction.
[0011] In one possible implementation, the first limiting portion is placed below the second limiting portion, and the third protective door also includes a third plug contact area. The third plug contact area is an inclined surface, and the height of the inclined surface is a low point on the side away from the limiting structure and a high point on the side close to the limiting structure, and is inclined along the second direction.
[0012] In one possible implementation, the elastic component drives the first protective door and the second protective door to move upward or downward in the first direction to cover the first plug hole and the second plug hole, while the second protective door drives the third protective door to move along the second direction away from the second plug hole through the limiting structure to cover the third plug hole.
[0013] In one possible implementation, the device includes a housing, wherein a first protection door, a second protection door, a third protection door and an elastic component are installed in the housing to form a protection door module;
[0014] The shell is provided with a modular jack for a three-prong plug to pass through, and the protective door module is detachably installed in the socket body.
[0015] In a possible implementation, a distance that the first protection door and the second protection door move downward along the first direction is less than a length of the third plug hole.
[0016] In one possible implementation, the first plug hole is a circular structure, the diameter of the first plug hole is larger than the width of the second plug hole and smaller than the length of the second plug hole, and the first protective door is used to block between the ground-level socket and the first plug hole, only partially blocking the first plug hole.
[0017] In one possible implementation, a distance that the first protection door and the second protection door move downward along the first direction is equal to a width of the second plug hole.
[0018] In a possible implementation, a distance that the first protection door and the second protection door move downward along the first direction is greater than or equal to a width of the second plug hole and less than 110% of the width of the second plug hole.
[0019] In one possible implementation, the first protection door and the second protection door are rectangular structures, the length directions of the first protection door and the second protection door are in the second direction, and an integrally formed protection door connecting part is provided between the first protection door and the second protection door. The protection door connecting part is a rod-shaped structure, and its two ends are respectively connected to the first protection door and the second protection door, and are perpendicular to the first protection door and the second protection door along the first direction.
[0020] In one possible implementation, the width of the rectangular structure of the first protective door is less than or equal to the width of the rectangular structure of the second protective door, the rectangular structure of the first protective door blocks half of the first plug hole, and a boss structure is provided on the side of the rectangular structure of the first protective door upward along the first direction, the boss structure at least blocks the center of the first plug hole, and the length and width of the boss structure are less than the radius of the first plug hole.
[0021] In one possible implementation, a first limiting portion is further extended toward the third protective door at the connection between the second protective door and the protective door connecting portion, and the third protective door includes a third plug contact area for shielding the third plug hole. A second limiting portion is provided on a side of the third plug contact area close to the second protective door, and the side surfaces where the first limiting portion and the second limiting portion abut against each other are complementary inclined surfaces.
[0022] In one possible implementation, the first protective door, the second protective door and the third protective door are slidingly arranged on the base, the first protective door is provided with a first protrusion along the first direction, the base is provided with a second protrusion along the first direction, and the first protrusion and the second protrusion are on the same straight line, and the two ends of the elastic component are respectively installed on the first protrusion and the second protrusion.
[0023] In one possible implementation, the first protective door is provided with a first sliding groove along the first direction, and the base is provided with a first boss that cooperates with the first sliding groove; and / or, the third protective door is provided with a third protrusion along the second direction, and the base is provided with a second sliding groove that cooperates with the third protrusion.
[0024] Compared with the prior art, the protection door structure of the DC socket of the present application can simplify the protection structure and improve the efficiency of production and installation by designing the first protection door and the second protection door as an integrated structure. Furthermore, a limiting structure is provided between the second protection door and the third protection door, so that the second protection door limits the third protection door. After the grounding plug is connected, the limit of the third protection door is released. When there is no grounding plug inserted, the second protection door and the third protection door cannot be opened. Such a design can greatly improve the safety of the socket, ensure the safety of electricity use, prevent electric shock accidents, and solve the problem of poor safety of traditional sockets. Furthermore, in cases where the second and third plug holes of the DC outlet are rectangular, with the length of the second plug hole extending in the second direction and the length of the third plug hole extending in the first direction, the first and second protective doors are designed as an integrated unit, while the third protective door is designed and installed separately. This allows the first and second protective doors to move in the first direction, while the third protective door moves in the second direction. The distance the first and second protective doors move in the first direction is less than the length of the third plug hole. This design significantly reduces the overall size of the outlet, saves production costs, improves production and installation efficiency, and makes the outlet compact and aesthetically pleasing. In an optimal scenario, the distance the first and second protective doors move downward in the first direction can be equal to the width of the second plug hole, minimizing the space occupied by the protective door structures. In addition, the elastic component drives the first protection door and the second protection door to move upward in the first direction to cover the first plug hole and the second plug hole. At the same time, the second protection door drives the third protection door to move rightward in the second direction to cover the third plug hole through the limiting structure. There is no need to set a separate elastic component for the third protection door. Only one elastic component needs to be set to drive the first protection door, the second protection door and the third protection door at the same time. The structure is simple and the cost is reduced.
[0025] Furthermore, by adopting a modular structure for the protective door structure, the first protective door, the second protective door, the third protective door and the elastic component are installed in the shell to form a protective door module, which can be detachably installed on the socket body, thereby shielding and protecting the socket in the socket. This modular structure has the advantages of easy installation and beautiful structure, which can improve the efficiency of socket production and installation. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a structural diagram of the door structure protected by this application;
[0027] Figure 2 This is a schematic structural diagram of the face cover in the door structure protected by this application;
[0028] Figure 3a This is a front view of the structure of the door protected by the present application before the plug is inserted;
[0029] Figure 3b This is a side view of the structure of the door protected by the present application before the plug is inserted;
[0030] Figure 4a This is a front view of the structure of the protection door of the present application after the ground plug is partially inserted;
[0031] Figure 4b This is a side view of the structure of the protective door structure of the present application after the ground plug is partially inserted;
[0032] Figure 5 It is a structural diagram of the third protection door in the protection door structure of this application;
[0033] Figure 6 It is a structural diagram of the first protection door and the second protection door in the protection door structure of the present application;
[0034] Figure 7 It is a structural diagram of the base in the door structure protected by this application;
[0035] Figure 8 This is a main structural diagram of the three-pin plug in the door structure protected by this application, which is fully inserted into the socket;
[0036] In the figure: protective door component 100; base 101; cover 102; plug hole 103; first plug hole 103a; second plug hole 103b; third plug hole 103c; first plug 104; first protective door 1; second protective door 2; third protective door 3; first plug contact area 11; elastic component 4; protective door connecting part 5; first limiting part 21; second limiting part 31; third plug contact area 32; first protrusion 12; second protrusion 13; first slide groove 14; first boss 15; third protrusion 33; second slide groove 34. DETAILED DESCRIPTION
[0037] The following embodiments are given in conjunction with the accompanying drawings to further illustrate the specific implementation of the present invention. The protection scope of the present invention is not limited to the description of the following embodiments.
[0038] The socket includes a socket body and a protective door structure. The socket body includes multiple sockets with a tightening arm structure. One end of the socket is connected to the line power supply, and the other end is used to connect the plug. The socket has a clamping effect and can cooperate with the plug to achieve a clamping connection, which can fix and limit the plug.
[0039] The protection door structure has a protection door component 100 corresponding to the socket, which is used to shield the socket in the socket when the socket is not in use to prevent small objects from contacting the socket and causing safety problems. Figure 1As shown, the present application provides a DC socket protection door structure, which is used in the DC socket to reduce the size of the DC socket. In addition, in order to facilitate readers to understand the technical solution of the present application, Figure 3a In the figure, the direction perpendicular to the paper is defined as the third direction (i.e., the thickness direction of the socket), the vertical direction is defined as the first direction, and the horizontal direction is defined as the second direction, wherein the third direction, the first direction, and the second direction are perpendicular to each other.
[0040] The protective door structure of the DC socket includes a protective door component 100 and an elastic component 4. The protective door component 100 includes a first protective door 1, a second protective door 2, and a third protective door 3 for shielding the first plug hole 103a, the second plug hole 103b, and the third plug hole 103c of the socket. The first plug hole 103a, the second plug hole 103b, and the third plug hole 103c are used to insert a three-prong plug with a grounding electrode. The first protective door 1, the second protective door 2, and the third protective door 3 block the three-prong socket and the three-prong socket (i.e., the first plug hole 103a, the second plug hole 103b, and the third plug hole 103c) in the socket.
[0041] Preferably, in order to address the special structure of the DC three-pin plug in the prior art, the second plug hole 103b and the third plug hole 103c are rectangular structures, and the length and width of the second plug hole 103b and the third plug hole 103c are substantially the same, wherein the length side of the second plug hole 103b is in the second direction, and the length side of the third plug hole 103c is in the first direction. In this way, if the third protective door 3 moves in the first direction, it needs to move a longer distance to avoid the third plug hole 103c. Therefore, this embodiment adopts a technical solution in which the third protective door 3 moves left and right, and a technical solution in which the first protective door 1 and the second protective door 2 move up and down along the first direction. The distance that the first protective door 1 and the second protective door 2 move downward along the first direction is less than the length of the third plug hole 103c, which can reduce the distance that each protective door moves, reduce the volume of the protective door structure, and thus reduce the overall volume of the socket.
[0042] In one possible implementation, the protective door structure of the DC socket is a modular structure, that is, the structure is an integral whole, including a shell and a protective door component 100 and an elastic component 4 arranged in the shell. After the first protective door 1, the second protective door 2, the third protective door 3 and the elastic component 4 are installed in the shell to form a protective door module, they can be detachably installed in the socket body to form a complete socket. The shell is provided with a modular jack for a three-prong plug to pass through, thereby shielding and protecting the socket in the socket. This modular structure has the advantages of easy installation and beautiful structure, which can improve the efficiency of socket production and installation; the shell includes a base 101 and a cover 102, the protective door component 100 is arranged in the base 101, and the cover 102 can serve as the cover 102 of the socket or be shielded by the panel of the socket.
[0043] In another possible implementation, the protective door structure of the DC socket is a componentized structure, which is installed inside the socket, that is, the base 101 in the figure can be used as a partition between the protective door structure and the socket body, and the cover 102 is the panel of the socket. The first plug hole 103a, the second plug hole 103b and the third plug hole 103c in the figure are the three-pin sockets of the socket. During the installation of the socket, the various parts of the protective door structure are dispersedly installed on the partition, thereby shielding and protecting the socket in the socket to prevent small objects from contacting the socket and causing electric shock accidents. Figure 1 The base 101 and the cover 102 can be understood as the shell that protects the door module, or can be understood as a part of the shell of the socket, both of which fall within the scope of protection of this application.
[0044] Taking the first possible implementation as an example, the protective door structure of the DC socket is a modular structure, which includes a base 101, a cover 102, and a protective door component 100 arranged in the base 101. The base 101 is provided with an installation and limiting structure for installing and limiting the protective door component 100; the cover 102 is fixedly installed with the base 101 along the third direction of the base 101 (i.e., the thickness direction of the socket), and the cover 102 is provided with a plug hole 103, such as Figure 2 、 Figure 3b as well as Figure 4b As shown, the plug hole 103 includes a first plug hole 103a, a second plug hole 103b and a third plug hole 103c. The first plug hole 103a, the second plug hole 103b and the third plug hole 103c respectively correspond to the first plug 104, the second plug (not shown in the figure) and the third plug (not shown in the figure) on the three-prong plug, and can cooperate with each other to connect or disconnect the power supply using the electrical device through a plug-in connection method. In this application, the first plug 104 is a ground pole plug, the second plug is an L-pole plug, and the third plug is an N-pole plug.
[0045] Preferably, the protective door component 100 includes: a first protective door 1, a second protective door 2 and a third protective door 3. The first protective door 1 includes a first plug contact area 11 with a slope structure. The first plug contact area 11 of the first protective door 1 is used to block the first plug hole 103a, the second protective door 2 is used to block the second plug hole 103b, and the third protective door 3 is used to block the third plug hole 103c to prevent small objects from extending into the plug hole 103 and contacting the socket, causing electric shock accidents and endangering personal safety.
[0046] The first protection door 1 and the second protection door 2 are integrally formed and configured to move up and down along the first direction. The elastic component 4 is connected to the first protection door 1 or the second protection door 2. In this embodiment, an elastic component 4 is provided between the first protection door 1 and the base 101. Under the action of the elastic component 4, the first protection door 1 and the second protection door 2 have potential energy upward along the first direction. When the socket is not in use, the elastic component 4 causes the first protection door 1 and the second protection door 2 to respectively block the first plug hole 103a and the second plug hole 103b. The third protection door 3 is configured to move left and right along the second direction. A limiting structure is further provided between the first protection door 1 or the second protection door 2 and the third protection door 3. The limiting structure is used to limit the third protection door 3 from moving leftward along the second direction from the third plug hole 103c to the second plug hole 103b, so that the third protection door 3 is located at a position blocking the third plug hole 103c.
[0047] Typically, for safety reasons, the grounding plug in a three-prong plug needs to be longer than the other two poles, so that before the power is turned on, the electrical equipment is in a grounding protection state, thereby improving the safety level. Therefore, the first plug 104 is longer than the other two poles. The first plug 104 first contacts the first plug contact area 11 of the first protective door 1. Because the first plug contact area 11 is an inclined surface, during the process of the first plug 104 being inserted into the first plug hole 103a, the first plug 104 generates a downward force in the first direction on the first protective door 1 and the second protective door 2, driving the first protective door 1 and the second protective door 2 to move downward in the first direction to avoid the The first plug hole 103a and the second plug hole 103b are described. At the same time, after the first protective door 1 and the second protective door 2 move downward a certain distance along the first direction, the second protective door 2 releases the limit on the third protective door 3, so that the third protective door 3 can move leftward from the third plug hole 103c to the second plug hole 103b along the second direction to avoid the third plug hole 103c. In this way, the first protective door 1, the second protective door 2 and the third protective door 3 are respectively misaligned with the first plug hole 103a, the second plug hole 103b and the third plug hole 103c, avoiding the first plug hole 103a, the second plug hole 103b and the third plug hole 103c.
[0048] Of course, in other embodiments, the first plug contact area 11 can be a reverse inclined surface, and a channel is opened at the lower part of the inclined surface. The first plug 104 contacts the inclined surface and applies a thrust, which can drive the first protection door and the second protection door to move upward in the first direction, and then the first plug 104 slides down out of the inclined surface in the first direction, is inserted into the channel and plugged into the corresponding ground socket, so that the first protection door 1 and the second protection door 2 avoid the first plug hole 103a and the second plug hole 103b; and at this time, the limiting structure between the second protection door and the third protection door can also be adjusted accordingly, so that when the first protection door and the second protection door move upward in the first direction, the limiting structure can release the limit on the third protection door, so that the third protection door can move in the second direction toward the second plug hole 103b. , avoiding the third plug hole 103c. At the same time, in this embodiment, the elastic component 4 gives the first protection door 1 and the second protection door 2 the potential energy to move downward in the first direction. At this time, the elastic component 4 can be a tension spring. When the plug is pulled out, the first protection door 1 and the second protection door 2 move downward in the first direction under the tension of the elastic component 4, and the limiting structure drives the third protection door 3 to move along the second direction away from the second plug hole 103b. The first protection door 1, the second protection door 2 and the third protection door 3 respectively block the first plug hole 103a, the second plug hole 103b and the third plug hole 103c at the same time. This all falls within the scope of protection of the present application and will not be repeated. The present application is explained by taking the first plug 104 driving the first protection door 1 and the second protection door 2 to move downward as an example.
[0049] By designing the first protection door 1 and the second protection door 2 as an integrated structure, the protection structure can be simplified and the efficiency of production and installation can be improved. Furthermore, a limiting structure is set between the second protection door 2 and the third protection door 3, so that the second protection door 2 limits the third protection door 3. After the ground plug is connected, the limit of the third protection door 3 is released. In the absence of a ground plug, the second protection door 2 and the third protection door 3 cannot be opened. Such a design can greatly improve the safety of the socket, ensure electricity safety, prevent electric shock accidents, and solve the problem of poor safety of traditional sockets.
[0050] Compared with the existing technology, this application uses the above-mentioned structural design to design the first protection door 1 and the second protection door 2 as one body, and designs and installs the third protection door 3 separately, so that the first protection door 1 and the second protection door 2 move up and down along the second direction, and the third protection door 3 moves left and right along the first direction. This design can greatly reduce the overall volume of the socket, save production costs, improve the efficiency of production and installation, and make the structure of the socket compact and beautiful.
[0051] Preferably, Figure 4aAs shown, the limiting structure includes a first limiting portion 21 and a second limiting portion 31. The first limiting portion 21 is arranged on one side of the second protection door 2, and the second limiting portion 31 is arranged on one side of the third protection door 3. The first limiting portion 21 and the second limiting portion 31 are arranged opposite to each other. The limiting of the third protection door 3 is achieved through the mutual cooperation between the first limiting portion 21 and the second limiting portion 31.
[0052] Further, such as Figure 4a As shown, the first limiting portion 21 and the second limiting portion 31 can be mutually cooperating inclined surfaces. The obtuse angle or acute angle formed by the first limiting portion 21 and the second direction is complementary to the acute angle or obtuse angle formed by the second limiting portion 31 and the second direction. The first limiting portion 21 is placed below the second limiting portion 31 to achieve the limitation of the third protection door 3. The design of the inclined surface allows the second protection door 2 to gradually change the limiting distance of the third protection door 3. When the second protection door 2 moves downward a little, the third protection door 3 can also move to the left a little. Preferably, the inclination angle of the inclined surface of the first limiting portion 21 and the inclination angle of the inclined surface of the second limiting portion are 45 degrees and 135 degrees, respectively. Of course, as another embodiment, the first limiting portion 21 can also be a boss of a rod-shaped structure, and the plane of the boss presses against the third protection door 3. In this way, the second protection door 2 needs to move downward so that the raised structure completely avoids the third protection door 3 before the third protection door 3 can move.
[0053] Further, Figure 5 A schematic structural diagram of the third protection door 3 in a preferred embodiment is shown. Figure 5 As shown, the third protective door 3 also includes a third plug contact area 32. This third plug contact area 32 is a sloped structure that blocks the third plug hole 103c. The slope is lower on the side away from the retaining structure and higher on the side closer to the retaining structure, sloping in the second direction. By providing the sloped third plug contact area 32 on the third protective door 3, when a third plug contacts the third plug contact area 32, the third plug exerts a force on the third protective door 3 to move leftward in the second direction, causing the third protective door 3 to move leftward in the second direction. Ultimately, the first retaining portion 21 abuts the second retaining portion 31, releasing the third protective door 3 from blocking the third plug hole 103c, allowing the third plug to be smoothly inserted into the third plug hole 103c.
[0054] When the plug is removed from the socket, the first and second protective doors 1 and 2, under the action of the elastic member 4, move upward in the first direction to block the first and second plug holes 103a and 103b. Simultaneously, due to the abutment between the first and second limiting portions 21 and 31, the second protective door 2, through the first limiting portion 21, pushes the third protective door 3 to move rightward in the second direction away from the second plug hole 103b, blocking the third plug hole 103c. Ultimately, the third protective door 3 blocks the third plug hole 103c. It should be noted that, compared to the first and second protective doors 1 and 2 moving first and then the third protective door 3 when the plug is inserted, during this process, the first, second, and third protective doors 1, 2, and 3 move synchronously when the plug is removed. The first plug 104 is longer than the second and third plugs, so the second and third plugs are disconnected from the power source first, followed by the first plug 104. The electrical equipment remains grounded until it is disconnected from the power source, thus improving electrical safety. In this embodiment, only one elastic component 4 is required to simultaneously drive the first protection door 1 , the second protection door 2 and the third protection door 3 , which simplifies the structure and reduces the cost.
[0055] In one possible implementation, a second elastic member may be provided between the third protective door 3 and the base 101 to replace the third plug contact area 32 of the inclined structure. The second elastic member is in the second direction, so that the third protective door 3 has a force to move leftward along the second direction. At the moment when the second protective door 2 releases the limit on the third protective door 3, the third protective door 3 moves leftward along the second direction under the action of the second elastic member, thereby releasing the obstruction of the third plug hole 103c, thereby allowing the third plug to be smoothly inserted into the third plug hole 103c. For example, Figure 8 The schematic diagram of the structure of the protective door structure of the DC socket is shown when the three-pin plug is fully inserted into the socket. The elastic member can be a spring or an elastic member, and the elastic member can also be provided with the third plug contact area 32 of the inclined structure.
[0056] In one possible implementation, the third protective door 3 is provided with a third plug contact area 32. A second elastic member may be disposed between the third protective door 3 and the base 103. The second elastic member, when in a second direction, imparts a force to the third protective door 3 to move rightward in the second direction. When no plug is inserted, the third protective door 3, under the action of the second elastic member, blocks the third plug hole 103c. In other words, the third protective door 3 may be provided with an independent resetting elastic component to block the third plug hole 103c without the second protective door 2 driving the third protective door 3 back into position. However, this increases component parts and costs.
[0057] In one possible implementation, the first limiting portion 21 of the limiting structure can be a boss of a rod-shaped structure extending from one side of the bottom of the second protective door 2, and the second limiting portion 31 is a groove arranged on one side of the third protective door 3, and the groove cooperates with the boss part, that is, the depth of the groove is less than the length of the boss. When the plug is not inserted, the second protective door 2 and the third protective door 3 have a certain distance in the second direction; of course, the limiting structure can also be just the first limiting portion 21 arranged between the second protective door 2 and the third protective door 3, and the first limiting portion 21 can be a boss of a rod-shaped structure extending from one side of the bottom of the second protective door 2 or the third protective door 3. When the plug is not inserted, the first limiting portion 21 makes the second protective door 2 and the third protective door 3 have a certain distance in the second direction.
[0058] Obviously, there are many embodiments of the limiting structure, which are not listed here one by one. All features that are similar in structure and have the same functions as the present embodiment fall within the scope of protection of this application.
[0059] Preferably, Figure 6 A schematic structural diagram of the first protection door 1 and the second protection door 2 in a preferred embodiment is shown. Figure 7 A schematic structural diagram of the base 101 in a preferred embodiment is shown. Figure 3a 、 Figure 6 and Figure 7 As shown, the first protective door 1 is provided with a first protrusion 12 along the first direction, and the base 101 is provided with a second protrusion 13 along the first direction, and the first protrusion 12 and the second protrusion 13 are on the same straight line. The two ends of the elastic component 4 are respectively mounted on the first protrusion 12 and the second protrusion 13. By respectively providing the first protrusion 12 and the second protrusion 13 on the first protective door 1 and the base 101, the elastic component 4 can be limited and fixed to prevent the position of the elastic component 4 from shifting during the use of the socket, thereby affecting the service life of the socket. Of course, in a less favorable embodiment, a protrusion can also be provided between the first protective door 1 and the base, or no protrusion is provided, or the protrusion can be changed to a groove structure, and the elastic component 4 can be embedded in the groove structure to limit and fix it. All features that are similar in structure and function to those of this embodiment are within the scope of protection of this application.
[0060] Preferably, Figure 6 and Figure 7As shown, the first protective door 1 is provided with a first slide groove 14 along a first direction, and the base 101 is provided with a first boss 15 that cooperates with the first slide groove 14. In order to enhance the stability of the installation of the first protective door 1, the first slide groove 14 and the first boss 15 can be provided in two pairs. Of course, in other embodiments, they can also be provided in one pair or multiple pairs, which is not required here. The first slide groove 14 can also be provided on the base 101, and correspondingly, the first boss 15 is provided on the first protective door 1. It can be seen that this structural feature can be transformed and combined in various ways, and all those that can be thought of by those skilled in the art fall within the scope of protection of this application.
[0061] Preferably, Figure 5 and Figure 7 As shown, the third protective door 3 is provided with a third protrusion 33 along the second direction, and the base 101 is provided with a second slide groove 34 that cooperates with the third protrusion 33. In this embodiment, since the third protective door 3 is smaller than the combination of the first protective door 1 and the second protective door 2, the third protrusion 33 and the second slide groove 34 can be provided as a pair. Of course, in other embodiments, multiple pairs can be provided. This structural feature is susceptible to various variations and combinations, and all those conceivable by those skilled in the art are within the scope of protection of this application.
[0062] By arranging a first sliding groove 14 on the first protective door 1 and arranging a first boss 15 that cooperates with the first sliding groove 14 on the base 101; arranging a third protrusion 33 on the third protective door 3 and arranging a second sliding groove 34 on the base 101, the first protective door 1 and the second protective door 2 can be slid along the first direction, and the third protective door 3 can be slid along the second direction, while also playing a role of limiting.
[0063] Furthermore, the elastic component 4 can be a compression spring, or of course a torsion spring, an elastic rubber rod or other elastic parts. All those with the same function and similar structure are within the scope of protection of this application.
[0064] Preferably, the first plug hole 103a is circular, with its diameter greater than the width and less than the length of the second plug hole 103b. The first protective door 1 is positioned between the ground socket and the first plug hole 103a, only partially blocking the first plug hole 103a. This further reduces the distance each protective door travels. The first protective door 1 blocks the ground socket, which does not pose a safety concern. Thus, in this embodiment, the distance the first and second protective doors 1 and 2 travel downward in the first direction is equal to the width of the second plug hole 103b, minimizing the space occupied by the protective door structures. Alternatively, the distance the first and second protective doors 1 and 2 travel downward in the first direction may be slightly increased to reduce the machining accuracy requirement. For example, the distance the first and second protective doors 1 and 2 travel downward in the first direction may be greater than or equal to the width of the second plug hole 103b, but less than 110% of the width of the second plug hole 103b.
[0065] Correspondingly, preferably, Figure 3a As shown, the first and second protective doors 1 and 2 are rectangular parallelepiped structures, with their lengths oriented in the second direction. An integrally formed protective door connecting portion 5 is disposed between the first and second protective doors 1 and 2. This rod-shaped protective door connecting portion 5 is connected to the first and second protective doors 1 and 2 at both ends, and is perpendicular to the first and second protective doors 1 and 2 along the first direction. A first stopper 21 extends from the junction of the second protective door 2 and the protective door connecting portion 5 toward the third protective door 3. The third protective door 3 includes a third plug contact area 32 for blocking the third plug hole 103c. A second stopper 31 is disposed on the side of the third plug contact area 32 proximal to the second protective door 2. The sides where the first and second stopper 31 abut against each other are complementary inclined surfaces.
[0066] Further, such as Figure 2As shown, the first plug contact area 11 of the first protective door 1 partially obscures the first plug hole 103a, and a boss structure is provided on top of the first plug contact area 11. By designing the first protective door 1 to partially obscure the first plug hole 103a, the difficulty of inserting the first plug 104 into the first plug hole 103a is reduced. Furthermore, the boss structure provided on top of the first plug contact area 11 prevents small objects from being inserted into the first plug hole 103a, thereby increasing the safety of the socket. Specifically, the width of the rectangular structure of the first protective door 1 is less than or equal to the width of the rectangular structure of the second protective door 2. The rectangular structure of the first protective door 1 obscures half of the first plug hole 103a, and the sides of the rectangular structure of the first protective door 1 are provided with boss structures extending upward in a first direction. The boss structures at least obscure the center of the first plug hole 103a, and the length and width of the boss structures are less than the radius of the first plug hole 103a. In a less preferred embodiment, the first protective door 1 can be configured to completely obscure the first plug hole 103a, and such configurations fall within the scope of protection of this application. Of course, in other embodiments, the second plug hole 103b and the third plug hole 103c may not be strictly rectangular, and may be, for example, elliptical. Any similar structural design that matches the special structure of a DC three-pin plug in the prior art is within the scope of protection of this application.
[0067] The protective door structure of the DC socket provided in the present application is used in the DC socket. While ensuring the smooth sliding of the protective door and without increasing the material cost, the protective door can achieve the functions of preventing electric shock and providing safety protection through simple interaction between the protective doors. It has the characteristics of high safety, few parts (only one spring is needed to realize the movement of two parts), simple assembly and low cost.
[0068] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, or are conventionally placed directions or positional relationships during use. They are intended solely for ease of description and do not imply that the devices or components referred to must have a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely for distinction and description and should not be construed as indicating relative importance.
[0069] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.
Claims
1. A protective door structure for a DC socket, comprising a first protective door (1), a second protective door (2) and a third protective door (3) for respectively shielding a first plug hole (103a), a second plug hole (103b) and a third plug hole (103c) of the socket, wherein the second plug hole (103b) and the third plug hole (103c) are rectangular structures, and the length side of the second plug hole (103b) is in the second direction, and the length side of the third plug hole (103c) is in the first direction, characterized in that: The first protective door (1) comprises a first plug contact area (11) with an inclined surface structure, and the first plug contact area (11) of the first protective door (1) blocks the first plug hole (103a). The first protection door (1) and the second protection door (2) are integrally formed and configured to move in a first direction. The elastic component (4) is connected to the first protection door (1) or the second protection door (2) to drive the first protection door (1) and the second protection door (2) to move in the first direction to respectively cover the first plug hole (103a) and the second plug hole (103b). The third protection door (3) is configured to move along a second direction, the second direction being perpendicular to the first direction. A limiting structure is provided between the first protection door (1) or the second protection door (2) and the third protection door (3). The limiting structure is used to limit the movement of the third protection door (3) along the second direction from the third plug hole (103c) to the second plug hole (103b), so that the third protection door (3) is located at a position that blocks the third plug hole (103c). When the first plug contact area (11) of the first protective door (1) is driven by force to drive the first protective door (1) and the second protective door (2) to move along the first direction, the first protective door (1) and the second protective door (2) avoid the first plug hole (103a) and the second plug hole (103b), and at the same time, the limiting structure releases its limit on the third protective door (3), and the third protective door (3) moves from the position of blocking the third plug hole (103c) along the second direction to approach the second plug hole (103b) and avoid the third plug hole (103c).
2. The protective door structure of the DC socket according to claim 1, characterized in that: The limiting structure comprises a first limiting portion (21) provided on the second protection door (2) and a second limiting portion (31) provided on the third protection door (3); the first limiting portion (21) and the second limiting portion (31) are mutually matched inclined surfaces; an obtuse angle or an acute angle formed by the first limiting portion (21) and the second direction is complementary to an acute angle or an obtuse angle formed by the second limiting portion (31) and the second direction.
3. The protective door structure of the DC socket according to claim 2, characterized in that: The first limiting portion (21) is placed below the second limiting portion (31), and the third protective door (3) further comprises a third plug contact area (32). The third plug contact area (32) is an inclined surface, the height of the inclined surface being a low point on a side away from the limiting structure and a high point on a side close to the limiting structure, and thus inclined along the second direction.
4. The protective door structure of the DC socket according to claim 3, characterized in that: The elastic component (4) drives the first protection door (1) and the second protection door (2) to move upward or downward in a first direction to cover the first plug hole (103a) and the second plug hole (103b), while the second protection door (2) drives the third protection door (3) to move in a second direction away from the second plug hole (103b) via a limiting structure to cover the third plug hole (103c).
5. The protective door structure of the DC socket according to claim 1, characterized in that: It comprises a housing, wherein a first protection door (1), a second protection door (2), a third protection door (3) and an elastic component (4) are installed in the housing to form a protection door module; The shell is provided with a modular jack for a three-prong plug to pass through, and the protective door module is detachably installed in the socket body.
6. The protective door structure of the DC socket according to claim 1, characterized in that: The distance that the first protection door (1) and the second protection door (2) move downward along the first direction is less than the length of the third plug hole (103c).
7. The protective door structure of the DC socket according to claim 6, characterized in that: The first plug hole (103a) is a circular structure, the diameter of the first plug hole (103a) is larger than the width of the second plug hole (103b) and smaller than the length of the second plug hole (103b), and the first protective door (1) is used to block between the ground-level socket and the first plug hole (103a), and only partially blocks the first plug hole (103a).
8. The protective door structure of the DC socket according to claim 7, characterized in that: The distance that the first protection door (1) and the second protection door (2) move downward along the first direction is equal to the width of the second plug hole (103b).
9. The protective door structure of the DC socket according to claim 7, characterized in that: The distance that the first protection door (1) and the second protection door (2) move downward in the first direction is greater than or equal to the width of the second plug hole (103b) and less than 110% of the width of the second plug hole (103b).
10. The protective door structure of the DC socket according to claim 7, characterized in that: The first protection door (1) and the second protection door (2) are rectangular parallelepiped structures, the length directions of the first protection door (1) and the second protection door (2) are in the second direction, an integrally formed protection door connecting portion (5) is provided between the first protection door (1) and the second protection door (2), and the protection door connecting portion (5) is a rod-shaped structure, with two ends respectively connected to the first protection door (1) and the second protection door (2), and perpendicular to the first protection door (1) and the second protection door (2) along the first direction.
11. The protective door structure of a DC socket according to claim 10, characterized in that: The width of the rectangular parallelepiped structure of the first protective door (1) is less than or equal to the width of the rectangular parallelepiped structure of the second protective door (2), the rectangular parallelepiped structure of the first protective door (1) blocks half of the first plug hole (103a), and a boss structure is provided on the side of the rectangular parallelepiped structure of the first protective door (1) upward along a first direction, the boss structure at least blocks the center of the first plug hole (103a), and the length and width of the boss structure are less than the radius of the first plug hole (103a).
12. The protective door structure of a DC socket according to claim 10, characterized in that: A first limiting portion (21) is further provided at the connection point between the second protective door (2) and the protective door connecting portion (5) extending in the direction of the third protective door (3); the third protective door (3) comprises a third plug contact area (32) for shielding the third plug hole (103c); a second limiting portion (31) is provided on a side of the third plug contact area (32) close to the second protective door (2); and the side surfaces where the first limiting portion (21) and the second limiting portion (31) abut against each other are complementary inclined surfaces.
13. The protective door structure of a DC socket according to claim 1, characterized in that: The first protection door (1), the second protection door (2) and the third protection door (3) are slidably arranged on the base (101); the first protection door (1) is provided with a first protrusion (12) along a first direction; the base (101) is provided with a second protrusion (13) along the first direction; the first protrusion (12) and the second protrusion (13) are on the same straight line; and the two ends of the elastic component (4) are respectively mounted on the first protrusion (12) and the second protrusion (13).
14. The protective door structure of a DC socket according to claim 13, characterized in that: The first protective door (1) is provided with a first sliding groove (14) along a first direction, and the base (101) is provided with a first boss (15) that cooperates with the first sliding groove (14); and / or, the third protective door (3) is provided with a third protrusion (33) along a second direction, and the base (101) is provided with a second sliding groove (34) that cooperates with the third protrusion (33).