Safety conversion plug

Abstract

The utility model discloses a safety conversion plug, and belongs to the technical field of conversion plugs. The socket comprises a square shell, the square shell comprises an upper shell and a lower shell which are mutually covered, and two, three or four peripheral side surfaces of the lower shell are provided with jack groups; the limiting block is arranged in the lower shell, and a sliding groove space is formed between the limiting block and the lower shell; the safety doors can be embedded into the corresponding sliding groove spaces from the opening direction of the lower shell, and the limiting blocks, the safety doors and the jack groups are the same in number and are distributed in a one-to-one correspondence mode; and the pin general assembly can be installed in the lower shell from the opening direction of the lower shell, and the pin general assembly abuts against the sides, close to the opening of the lower shell, of all the safety doors, so that the positions of the safety doors are limited. In the whole assembly process, the safety door can be directly embedded into the corresponding sliding groove space, then the shell is closed after the pin general assembly piece is installed, and therefore the safety door can be limited in the square shell very conveniently and rapidly, and the assembly efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of adapter technology, and in particular to a safe adapter. Background Technology

[0002] Vertical adapter plugs can distribute multiple sockets on the side, thus reducing the footprint. To improve the safety of the adapter plugs, a safety door structure is usually bolted to each socket location on the housing to ensure the safety performance of the vertical adapter plug. However, due to the small internal space of the housing, it is not convenient to fix the safety door inside the housing. Utility Model Content

[0003] The purpose of this utility model is to provide a safe conversion plug to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The technical solution adopted to solve the above-mentioned technical problems is as follows: a safety adapter, comprising: a square housing, including an upper housing and a lower housing that overlap each other, wherein two, three or four outer peripheral sides of the lower housing are provided with a set of insertion holes; a limiting block disposed in the lower housing, wherein the limiting block and the lower housing form a sliding groove space; a safety door that can be embedded in the corresponding sliding groove space from the opening direction of the lower housing, wherein the number of the limiting block, the safety door and the set of insertion holes are the same and distributed in a one-to-one correspondence; and a pin assembly that can be installed in the lower housing from the opening direction of the lower housing, wherein the pin assembly abuts against the side of all the safety doors near the opening of the lower housing, thereby restricting the position of the safety doors.

[0005] The technical solution has at least the following beneficial effects: during overall assembly, the safety door can be directly embedded in the corresponding sliding groove space, and after the pin assembly is installed, the housing is closed, which can conveniently and quickly confine the safety door within the square housing and improve assembly efficiency.

[0006] As a further improvement to the above technical solution, a protruding edge is provided on one side of the safety door. The limiting block includes a first protrusion attached to the protruding edge and one side of the safety door, a second protrusion attached to the side of the safety door away from the inner wall of the lower housing, and a third protrusion attached to the other side of the safety door. By dividing the limiting block into three protrusions, each side of the safety door is restricted. While ensuring the stability of the safety door, the space occupied by the limiting block can be reduced, making the overall square housing more compact and refined.

[0007] As a further improvement to the above technical solution, the safety door includes an outer frame and a blocking block slidably disposed on the outer frame. The blocking block is provided with an inclined guide surface, and a first elastic element is connected between the blocking block and the outer frame. The elastic force of the first elastic element keeps the inclined guide surface in the corresponding position corresponding to the socket group. The safety door has a simple structure and is easy to install as a whole.

[0008] As a further improvement to the above technical solution, the upper housing has a groove that accommodates a switch button for controlling the on / off state of the pin assembly. The bottom wall of the groove has a mounting hole, and rotating shafts are mounted on both sides of the mounting hole. The switch button has a shaft hole into which the rotating shafts can be inserted. The switch button is installed in the upper housing, facilitating its assembly.

[0009] As a further improvement to the above technical solution, the switch button is equipped with a limiting plate, and the bottom wall of the groove has a limiting hole for the limiting plate to swing. During the swinging process of the switch button, the side wall of the limiting hole restricts the limiting plate, thereby limiting the position of the switch button and improving the stability and reliability of the switch button.

[0010] As a further improvement to the above technical solution, the pin assembly includes: a first main line pin, a second main line pin, and a ground pin extending from the bottom of the lower housing; a main mounting base; a first conductive plate, a second conductive plate, and a third conductive plate respectively mounted on the main mounting base; the first conductive plate, the second conductive plate, and the third conductive plate are respectively connected to the first main line pin, the second main line pin, and the ground pin, and each extends to the corresponding position of each of the socket groups.

[0011] As a further improvement to the above technical solution, the main mounting base includes a first mounting base, a second mounting base, and a third mounting base stacked sequentially. The third conductive sheet is installed between the second and third mounting bases, and the second conductive sheet is installed between the first and second mounting bases. The first conductive sheet includes a main conductive portion and several sub-conductive portions extending to the corresponding socket groups. The main conductive portion and the sub-conductive portions are assembled together. The main conductive portion is installed on the first mounting base, and the sub-conductive portions are installed on the second mounting base. The first, second, and third mounting bases support the corresponding first, second, and third conductive sheets, respectively, and also facilitate mutual assembly and connection.

[0012] As a further improvement to the above technical solution, the main mounting base is provided with a limiting protrusion for restricting the position of the conductive sheet. The limiting protrusion can restrict the position of the first conductive sheet, thereby improving the stability of the first conductive sheet.

[0013] As a further improvement to the above technical solution, the first conductive plate is connected to the first main wire pin via a wire; and / or the second conductive plate is connected to the second main wire pin via a wire. The wire saves space and facilitates connection between the two spatial locations.

[0014] As a further improvement to the above technical solution, the main mounting base does not include the grounding pin. The third conductive piece, originally used to connect the grounding pin, is provided with a connecting section, and the square housing is provided with a notch corresponding to the connecting section. This allows for adaptation to external grounding wires. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0016] Figure 1 This is a schematic diagram of the disassembly mechanism of the square shell in an embodiment of this utility model;

[0017] Figure 2 This is a schematic diagram of the assembly structure of the security door in an embodiment of this utility model;

[0018] Figure 3 This is a diagram showing the positional relationship between the pin assembly and the safety door in an embodiment of this utility model.

[0019] Figure 4 This is an exploded view of the main mounting base in an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the assembly of the second mounting base and the first conductive sheet in an embodiment of this utility model;

[0021] Figure 6 This is an exploded structural diagram of the first conductive sheet, the second conductive sheet, and the third conductive sheet in an embodiment of this utility model.

[0022] 100. Square housing; 110. Upper housing; 111. Groove; 112. Switch button; 113. Mounting hole; 114. Rotating shaft; 115. Shaft hole; 116. Limiting plate; 117. Limiting hole; 120. Lower housing; 121. Insertion hole group; 200. Limiting block; 210. First protrusion; 220. Second protrusion; 230. Third protrusion; 300. Safety door; 310. Outer frame; 311. Protruding edge; 320. Blocking block; 330. Inclined guide surface; 340. 400. Elastic component; 411. Pin assembly; 412. First main line pin; 413. Second main line pin; 414. Ground pin; 420. Main mounting base; 430. Restriction protrusion; 421. First mounting base; 422. Second mounting base; 423. Third mounting base; 431. First conductive piece; 432. Second conductive piece; 433. Third conductive piece; 440. Main conductive part; 450. Sub-conductive part; 500. Wire; 600. Connecting section; 610. Notch. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0026] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0027] Reference Figure 1-6The safety conversion plug includes a square housing 100, a limiting block 200, a safety door 300, and a pin assembly 400.

[0028] The square housing 100 includes an upper housing 110 and a lower housing 120, with the upper housing 110 covering the top opening of the lower housing 120. Each of the three outer peripheral sides of the lower housing 120 is provided with a socket assembly 121. The socket assembly 121 may include a three-hole structure, such as an American-style socket, or a two-hole structure, such as a Chinese-style socket without a ground wire, depending on actual needs. In this embodiment, the socket assembly 121 is a three-hole American-style socket.

[0029] Three limiting blocks 200 are respectively provided on the inner side of the lower housing 120. A sliding groove space is formed between the limiting blocks 200 and the inner wall of the lower housing 120, allowing the safety door 300 to be embedded, thereby restricting the four sides (front, back, left, right) and the bottom of the safety door 300. A pin assembly 400 is installed inside the lower housing 120. After the pin assembly 400 is installed, it abuts against the top of the safety door 300, thus completely restricting the position of the safety door 300 and achieving a stable assembly. The upper housing 110 is then closed onto the opening of the lower housing 120 to complete the overall assembly. The safety door 300 has a simple installation structure, occupies little space, and is easy to assemble, resulting in high assembly efficiency and low production costs.

[0030] In other embodiments, the insertion hole groups 121 may be provided only on two or four outer peripheral sides of the lower housing 120. The number of safety doors 300, the number of limiting blocks 200, and the number of insertion hole groups 121 are the same, and their positions are distributed in a one-to-one correspondence.

[0031] The safety door 300 includes an outer frame 310, a blocking block 320, and a first elastic element 340. The blocking block 320 is slidably disposed within the outer frame 310. The first elastic element 340 consists of two helical springs, one end of which is installed on both sides of the blocking block 320, and the other end is installed on both sides of the inner sidewall of the outer frame 310. The elastic force of the first elastic element 340 provides a stable elastic force for the blocking block 320, causing the blocking block 320 to abut against one end of the inner side of the outer frame 310. Inclined guide surfaces 330 are provided on both sides of the blocking block 320. Under the elastic force of the first elastic element 340, the inclined guide surfaces 330 on the blocking block 320 correspond to the insertion hole group 121 on the same side of the lower housing 120, thereby concealing the inclined guide surfaces 330 within the insertion hole group 121. When the plug prongs are inserted into the socket group 121 from outside the square housing 100, they will abut against the inclined guide surface 330, causing the blocking block 320 to overcome the elastic force of the first elastic member 340 and push the blocking block 320 away from the position of the corresponding socket group 121, so that the plug prongs can enter the square housing 100 and be electrically connected to the plug assembly 400.

[0032] Specifically, the limiting block 200 includes a first protrusion 210, a second protrusion 220, and a third protrusion 230.

[0033] A protruding edge 311 is provided on one side of the outer frame 310. The first protrusion 210 is at a preset distance from the inner wall of the lower housing 120. The preset distance is the same as the thickness of the protruding edge 311. When the safety door 300 is embedded in the sliding groove space, the protruding edge 311 is embedded between the first protrusion 210 and the inner wall of the lower housing 120, so that the first protrusion 210 can restrict one side of the safety door 300 and the side of the safety door 300 away from the corresponding inner wall of the lower housing 120.

[0034] The second protrusion 220 is located at the bottom of the lower housing 120. The bottom of the outer frame 310 abuts against the top of the second protrusion 220, and the second protrusion 220 also abuts against the side of the outer frame 310 away from the inner wall of the lower housing 120. This allows the second protrusion 220 to restrict the bottom wall of the safety door 300 and the side of the safety door 300 away from the corresponding inner wall of the lower housing 120.

[0035] The third protrusion 230 is located at the bottom of the lower housing 120 and abuts against the other side of the outer frame 310, meaning the first and third protrusions 230 abut against two opposite sides of the outer frame 310. This allows the third protrusion to restrict the position of the safety door 300 on the other side. The groove space is the space formed between the first protrusion 210, the second protrusion 220, and the third protrusion 230 and the inner wall of the lower housing 120. The limiting block 200 restricts the safety door 300 from sliding to its lowest position. Combined with the pressure and restriction of the top of the safety door 300 by the pin assembly 400, the installation stability of the safety door 300 is ensured. Furthermore, by restricting the positions of each side of the safety door 300 by the first protrusion 210, the second protrusion 220, and the third protrusion 230, the space occupied by the limiting block 200 can be reduced while ensuring the stability of the safety door 300, making the overall square housing 100 more compact and refined.

[0036] The top of the upper housing 110 has a groove 111, in which three switch buttons 112 are arranged side by side. It should be noted that the number of switch buttons 112 is the same as the number of socket groups 121. Three mounting holes 113 are arranged side by side on the bottom wall of the groove 111. A rotating shaft 114 is mounted on each of the two opposite sides of the mounting hole 113. The top of the rotating shaft 114 is chamfered. A shaft hole 115 is provided on each of the two opposite sides of the switch button 112. The switch button 112 can be embedded in the groove 111, and the rotating shaft 114 on both sides of the corresponding mounting hole 113 is inserted into the corresponding shaft hole 115, allowing the switch button 112 to be rotatably connected to the upper housing 110, thus achieving the assembly connection between the switch button 112 and the upper housing 110.

[0037] A limiting plate 116 is installed at the bottom of the switch button 112, and the limiting plate 116 is integrally formed with the switch button 112. Three limiting holes 117 are formed on the bottom wall of the groove 111. After the switch button 112 is installed, the limiting plates 116 on the three switch buttons 112 are respectively inserted into the corresponding limiting holes 117, and the length of the limiting hole 117 is greater than the length of the limiting plate 116. When the switch button 112 swings, causing the limiting plate 116 to swing, the limiting plate 116 is allowed to swing within the limiting hole 117. The inner wall of the limiting hole 117 can restrict the swing of the limiting plate 116 within a certain range, thereby improving the swing stability of the switch button 112.

[0038] Specifically, the pin assembly 400 includes a main mounting base 420, three pins, and three conductive plates. The main mounting base 420 includes a first mounting base 421, a second mounting base 422, and a third mounting base 423, all located inside the lower housing 120. The three pins are a first main line pin 411, a second main line pin 412, and a ground pin 413. The three conductive plates are a first conductive plate 431, a second conductive plate 432, and a third conductive plate 433.

[0039] One end of the first main line pin 411, the second main line pin 412, and the ground pin 413 all extend downwards from the bottom of the lower housing 120 for power connection. The third mounting base 423 is installed at the bottom of the upper housing 110, the second mounting base 422 is stacked on top of the third mounting base 423, and the first mounting base 421 is stacked on top of the second mounting base 422.

[0040] One end of the first conductive sheet 431 is connected to the end of the first main line pin 411 that does not extend out of the lower housing 120, and the other end extends out to three first conductive contact ends, which are respectively located at the corresponding positions of the three socket groups 121.

[0041] One end of the second conductive sheet 432 is connected to the end of the second main line pin 412 that does not extend out of the lower housing 120, and the other end extends out to three second conductive contact ends, which are respectively located at the corresponding positions of the three socket groups 121.

[0042] One end of the third conductive piece 433 is connected to the end of the ground pin 413 that does not extend out of the lower housing 120, while the other end extends out to form three third conductive contacts, which are respectively located at the corresponding positions of the three socket groups 121. That is, when the three pins of the external plug are inserted into one of the socket groups 121, they can all contact the first conductive contact, the second conductive contact, and the third conductive contact, thereby achieving an electrical connection.

[0043] The third conductive sheet 433 is installed at the top of the third mounting base 423, that is, the third conductive sheet 433 is located between the top of the third mounting base 423 and the bottom of the second mounting base 422. The second conductive sheet 432 is installed at the top of the second mounting base 422, that is, the second conductive sheet 432 is located between the top of the second mounting base 422 and the bottom of the first mounting base 421.

[0044] The first conductive sheet 431 includes a main conductive portion 440 and three sub-conductive portions 450. The three third conductive contacts are located on the three sub-conductive portions, meaning each sub-conductive portion 450 extends to a corresponding position in one of the three socket groups 121. The main conductive portion 440 is mounted on the top of the first mounting base 421, and the three sub-conductive portions 450 are inserted from the side and mounted on the side of the second mounting base 422. This facilitates overall assembly.

[0045] Each of the three sub-conductive portions 450 is assembled and connected to the main conductive portion 440. Specifically, the main conductive portion 440 has three first contact ends for electrical connection with the three sub-conductive portions 450, and each of the three sub-conductive portions 450 has a second contact end for electrical connection with the main conductive portion 440. The top of the first contact end is bent upward to form a top block, and the top of the top block abuts against the middle of the bottom of the conductive piece, so that the conductive piece can swing about the top of the top block as a fulcrum.

[0046] The guide plate has rocker lugs on both sides of the part that is lifted by the top block. The first mounting base 421 has grooves on both sides of the guide plate. The rocker lugs on both sides of the guide plate are respectively accommodated in the grooves on both sides. The width of the grooves is slightly larger than the width of the rocker lugs to facilitate the swing of the guide plate.

[0047] A mounting cylinder is provided at the bottom of the switch button 112. The mounting cylinder passes through the mounting hole 113 and enters the upper position of the first mounting base 421. A spring and a pin (not shown in the figure) are installed inside the mounting cylinder. The spring provides elastic force to extend the pin out of the cylindrical cylinder, causing the pin to abut against the corresponding guide plate. This causes the guide plate to swing to one side and reach a stable state, and the switch button 112 also swings to the corresponding side and reaches a stable state. At this time, one end of the guide plate contacts the second contact end, making the corresponding sub-conductive part 450 and the total conductive part 440 connected and conducting electricity. When the switch button 112 is manually toggled to the other stable position, the pin compresses the spring and slides from one side to the other on the guide plate, causing the guide plate to swing to the other side, thereby separating the end of the guide plate from the second contact end, thus disconnecting the sub-conductive part 450 from the total conductive part 440. This realizes the on / off function of the switch.

[0048] Furthermore, a plurality of limiting protrusions 430 are provided on the top of the first mounting base 421. The plurality of limiting protrusions 430 respectively limit the side position of the first conductive sheet 431, thereby limiting the position of the first conductive sheet 431 on the first mounting base 421 and ensuring the installation stability of the first conductive sheet 431.

[0049] Furthermore, a wire 500 is connected between the second conductive piece 432 and the second main wire pin 412, thereby enabling electrical connection between the second conductive piece 432 and the second main wire pin 412. The wire 500 saves space and facilitates connection between the two spatial locations, and also makes it easier to assemble and arrange the second conductive piece 432 and the second main wire pin 412. In other embodiments, the first conductive piece 431 and the first main wire pin 411 can also be electrically connected via the wire 500.

[0050] In another embodiment, the ground pin 413 may be omitted, and instead, a connecting segment 600 may be provided on one side of the third conductive piece 433, which is originally used to connect the ground pin 413. A notch 610 is provided on the side of the lower housing 120 where the socket group 121 is not provided. The notch 610 exposes the connecting segment 600 on the outside of the lower housing 120, thereby facilitating the direct connection of the ground wire to the third conductive piece 433 through the connecting segment 600.

[0051] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A safety adapter, characterized in that, include: A square housing includes an upper housing and a lower housing that overlap each other, wherein two, three or four outer peripheral sides of the lower housing are provided with a set of insertion holes; A limiting block is disposed within the lower housing, and a sliding groove space is formed between the limiting block and the lower housing; The safety door can be embedded in the corresponding sliding groove space from the opening direction of the lower housing. The number of the limiting block, the safety door and the socket group are the same and they are distributed in a one-to-one correspondence. The pin assembly can be installed in the lower housing from the opening direction of the lower housing. The pin assembly abuts against all the safety doors on the side near the opening of the lower housing, thereby restricting the position of the safety doors.

2. The safety adapter according to claim 1, characterized in that: The safety door has a protruding edge on one side, and the limiting block includes a first protrusion attached to the protruding edge and one side of the safety door, a second protrusion attached to the side of the safety door away from the inner wall of the lower housing, and a third protrusion attached to the other side of the safety door.

3. The safety adapter according to claim 1, characterized in that: The safety door includes an outer frame and a blocking block slidably disposed on the outer frame. The blocking block is provided with an inclined guide surface. A first elastic element is connected between the blocking block and the outer frame. The elastic force of the first elastic element keeps the inclined guide surface in the corresponding position of the socket group.

4. A safety adapter according to claim 1, characterized in that: The upper housing has a groove that accommodates a switch button for controlling the on / off state of the pin assembly. The bottom wall of the groove has a mounting hole, and a rotating shaft is installed on both sides of the mounting hole. The switch button has a shaft hole into which the rotating shaft can be inserted.

5. A safety adapter according to claim 4, characterized in that: The switch button is equipped with a limiting plate, and the bottom wall of the groove has a limiting hole for the limiting plate to swing.

6. A safety adapter according to claim 1, characterized in that: The pin assembly includes: a first main pin, a second main pin, and a ground pin extending from the bottom of the lower housing; a main mounting base; and a first conductive plate, a second conductive plate, and a third conductive plate mounted on the main mounting base; the first conductive plate, the second conductive plate, and the third conductive plate are respectively connected to the first main pin, the second main pin, and the ground pin, and each extends to the corresponding position of each of the socket groups.

7. A safety adapter according to claim 6, characterized in that: The main mounting base includes a first mounting base, a second mounting base, and a third mounting base stacked sequentially. The third conductive sheet is installed between the second and third mounting bases, and the second conductive sheet is installed between the first and second mounting bases. The first conductive sheet includes a main conductive portion and a plurality of sub-conductive portions extending to the corresponding socket groups. The main conductive portion and the sub-conductive portions are assembled together. The main conductive portion is installed on the first mounting base, and the sub-conductive portions are installed on the second mounting base.

8. A safety adapter according to claim 7, characterized in that: The main mounting base is provided with a limiting protrusion for restricting the position of the conductive sheet.

9. A safety adapter according to claim 6, characterized in that: The first conductive plate is connected to the first main wire pin via a wire; and / or the second conductive plate is connected to the second main wire pin via a wire.

10. A safety adapter according to claim 6, characterized in that: The main mounting base does not include the ground pin. The third conductive piece, which was originally used to connect the ground pin, is provided with a connecting section. The square housing is provided with a notch for corresponding to the connecting section.

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