Anti-electric-shock baffle structure for pin assembly

Abstract

An anti-electric-shock baffle structure for a pin assembly. The anti-electric-shock baffle structure comprises a main body upper cover (20) and a main body lower cover (30), wherein the main body upper cover is provided with socket holes (21); and the main body lower cover comprises a bottom plate (31) and a side plate (32) vertically connected to the bottom plate, the bottom plate being provided with a combined pin hole group (33). The anti-electric-shock baffle structure further comprises at least one pin assembly (40, 50, 80), wherein each pin assembly comprises at least two pins and a key (422, 522, 822); a rib (451, 551, 851) extending in the direction of length of a guide column is formed on the guide column (45, 55, 85), and a gap (452, 552, 852) is provided at the end of the rib connected to the bottom plate; a fixed anti-electric-shock baffle (46, 56, 86) is formed on an inner side of the key, and a movable anti-electric-shock baffle (47, 57, 87) is provided between the fixed anti-electric-shock baffle and the key; sliding grooves (901, 904, 910) are formed in side walls of the main body upper cover and the main body lower cover, and movable baffle recesses (902, 905, 911) are respectively formed in two inward sides of each sliding groove; and key movable grooves (471, 571, 871) are provided in the middle of the movable anti-electric-shock baffles, and mounting clearance grooves are provided on one side of the key movable grooves. After the pins are pushed outwards, gaps in the sliding grooves can be completely covered, thus preventing the risk of electric shock caused by external objects coming into contact with internal metal parts.

Description

An anti-electric shock baffle structure for a pin assembly Technical Field

[0001] The utility model relates to the field of power converters, in particular to an anti-electric shock baffle structure of a pin assembly. Background Art

[0002] Because plug and socket specifications vary from country to country, they are not universally compatible. If you need to plug a plug into an outlet that doesn't match the specifications, you'll need a power converter. A power converter is a tool that connects your device to the intended outlet, then plugs the intended plug into the matching socket on the converter. The advent of power converters has made life more convenient, especially when traveling internationally, as there's no need to worry about the inconvenience of having your electronic device plug mismatched with the local outlet.

[0003] Traditional power adapters typically have prongs that are fixed and extended. However, for power adapters with multiple prongs, multiple prongs are required. If one prong is extended, the gap in the slot allows an external object to come into contact with the internal metal parts, posing a risk of electric shock. Utility Model Content

[0004] In view of the above-mentioned shortcomings, the purpose of the present invention is to provide an anti-electric shock baffle structure for a pin assembly, which can completely block the gap in the slide slot of any one of the pins after it is pushed out, thereby preventing the risk of electric shock.

[0005] The technical solution adopted by the present invention to achieve the above-mentioned purpose is:

[0006] A plug assembly anti-electric shock baffle structure, comprising a main body upper cover, a main body lower cover mounted on the main body upper cover, the main body upper cover is provided with a socket hole, the main body lower cover comprises a bottom plate and a side plate vertically connected to the bottom plate, the bottom plate is provided with a combined socket group, and further comprises at least one plug assembly arranged on the main body lower cover, the plug assembly comprises at least one live wire pin, at least one neutral wire pin, and a button; the guide column is formed with a convex strip extending along the length direction of the guide column, and the convex strip is connected to one end of the bottom plate and is provided with a There is a notch, the button component includes a button, a fixed anti-electric shock baffle is formed on the inner side of the button, and a movable anti-electric shock baffle is arranged between the fixed anti-electric shock baffle and the button; a sliding groove for the button to slide is formed on the side walls of the main body upper cover and the main body lower cover, and a movable baffle groove for the movable anti-electric shock baffle to be embedded and slide is formed on the inner side of the sliding groove, a key movable groove for the key to move is opened in the middle of the movable anti-electric shock baffle, and an installation clearance groove for the key to pass through and install is opened on one side of the key movable groove.

[0007] As a further improvement of the present invention, the key movable groove is in the shape of a rectangle or a circular arc runway as a whole.

[0008] As a further improvement of the present invention, the pin assembly includes a US standard pin assembly, a UK standard pin assembly, and a Chinese standard or Australian standard pin assembly.

[0009] As a further improvement of the present invention, the US-standard plug assembly includes a first connector, a first button connected to the first connector, a first positioning post vertically arranged on the interior of the main body lower cover and sequentially passing through the first connector, and a first guide post perpendicular to the main body lower cover and passing through the first connector; the first guide post has a first ridge formed along its length, and a first notch is provided at one end of the first ridge corresponding to the base plate.

[0010] As a further improvement of the present invention, the first connector includes a first plug body and a first pin vertically connected to the first plug body and matching the combined jack group, the upper end surface of the first plug body is formed with a first clip that respectively corresponds to the two sides of the first button member close to the side plate, a second clip that corresponds to the end of the first button member away from the side plate, a first plug positioning hole for the first positioning column to pass through, a first convex hole for the first guide column to pass through and move, and a first receiving groove for the first spring to move; the first button member includes a first button body and a first button connected to one end of the first button body and sliding between the main body upper cover and the main body lower cover, the first button body includes a first button clamping portion connected to one end of the first button and a first movable clamping portion connected to the other end of the first button clamping portion, a first pressing block movable in the first receiving groove is formed on the lower end surface of the first button clamping portion, a first button positioning hole is formed in the middle of the connection between the first button clamping portion and the first movable clamping portion, which is opposite to the first plug positioning hole. The first movable clamping portion is provided with a first key movable groove which is directly opposite to the first convex hole, the first plug positioning hole and the first key positioning hole are overlapped and sleeved on the first positioning column, and the first convex hole and the first key movable groove are overlapped and sleeved on the first guide column; the first spring is received in the first receiving groove, and one end is pressed against the innermost side of the first receiving groove and the other end is pressed against the first pressing block; a first fixed anti-electric shock baffle is provided on the inner side of the first button, and a first movable anti-electric shock baffle is also provided between the first fixed anti-electric shock baffle and the first button; a first sliding groove for the first button to slide is formed on the side walls of the main body upper cover and the main body lower cover, and a first movable baffle groove for the first movable anti-electric shock baffle to be inserted and slid is respectively formed on the two sides facing inward of the first sliding groove, and a first fixed baffle groove for the first fixed anti-electric shock baffle to slide is formed inside the first movable baffle groove; a first key movable groove for the first button to move is formed in the middle of the first movable anti-electric shock baffle, and a first installation clearance groove for the first button to pass through and install is formed on one side of the first key movable groove.

[0011] As a further improvement of the present invention, the British standard plug pin assembly includes a second connector, a second button member slidably connected to the second connector, a second positioning post vertically arranged on the interior of the main body lower cover and sequentially passing through the second connector, and a second guide post perpendicular to the main body lower cover and passing through the second connector; the second guide post has a second ridge formed along its length, and a second notch is provided at one end of the second ridge corresponding to the base plate.

[0012] As a further improvement of the utility model, the second connector includes a second connector body and a second pin connected vertically to the second connector body and matching the combined jack group, the upper end surface of the second connector body is formed with a fourth clip that respectively clips the second button member on both sides near one end of the side plate, a fourth clip that clips the second button member away from the side plate, a second connector positioning hole for the second positioning column to pass through, a second convex hole for the second guide column to pass through and move, and a second receiving groove for the second spring to move; the second button member includes a second button body and a second button connected to one end of the second button body and sliding between the main body upper cover and the main body lower cover, the second button body includes a second button clamping portion connected to one end of the second button and a second movable clamping portion connected to the other end of the second button clamping portion, a second pressing block movable in the second receiving groove is formed on the lower end surface of the second button clamping portion, and the second movable clamping portion is provided with a second pressing block that is opposite to the second The lockhole that is formed on the second cam is formed on the second cam face, and the lockhole that is formed on the second cam face is formed on the second cam face.

[0013] As a further improvement of the present invention, the Chinese or Australian standard plug assembly includes a fourth connector, a fourth button connected to the fourth connector, a fourth positioning column vertically arranged on the inside of the main body lower cover and passing through the fourth connector in sequence, and at least one fourth guide column perpendicular to the main body lower cover and passing through the fourth connector; a fourth ridge is formed on the fourth guide column along the length direction of the fourth guide column, and a fourth notch is provided at the end of the fourth ridge corresponding to the bottom plate.

[0014] As a further improvement of the present invention, the fourth connector includes a fourth connector body and a fourth pin vertically connected to the fourth connector body and matching the combined jack group, the upper end surface of the fourth connector body being formed with at least one sixth clip that is clamped on the side of the fourth button member, a fourth connector positioning hole for the fourth positioning column to pass through, at least one fourth convex hole for the fourth guide column to pass through and move, and a fourth receiving groove for the fourth spring to move; the fourth button member includes a fourth button body and a fourth button connected to one end of the fourth button body and sliding between the main body upper cover and the main body lower cover, the fourth button body having a lower end surface close to the fourth button and movable in the fourth receiving groove, the fourth button being provided with a fourth button positioning hole corresponding to the fourth connector positioning hole and a fourth button movable groove corresponding to the fourth convex hole, the fourth connector positioning hole and the fourth button positioning hole overlapping each other The fourth spring is received in the fourth receiving groove and one end of the spring is pressed against the innermost side of the fourth receiving groove and the other end of the spring is pressed against the fourth pressing block; a fourth fixed anti-electric shock baffle is provided on the inner side of the fourth button, and a fourth movable anti-electric shock baffle is further provided between the fourth fixed anti-electric shock baffle and the fourth button; a fourth sliding groove for the fourth button to slide is formed on the side walls of the main body upper cover and the main body lower cover, and a fourth movable baffle groove for the fourth movable anti-electric shock baffle to be inserted and slid is respectively formed on the two sides facing inward of the fourth sliding groove, and a fourth fixed baffle groove for the fourth movable anti-electric shock baffle to slide is provided on the inner side of the fourth movable baffle groove; a fourth key movable groove for the fourth key to move is provided in the middle of the fourth movable anti-electric shock baffle, and a fourth installation clearance groove for the fourth button to pass through and be installed is provided on one side of the fourth key movable groove.

[0015] The beneficial effects of the utility model are:

[0016] The US standard pin assembly is suitable for US standard plugs and sockets, and the UK standard pin assembly is suitable for UK standard plugs and sockets. The combined plug panel can be assembled between the main body upper cover and the main body lower cover, thereby expanding the use of the power converter with the specified structure of the pin to be able to replace different sockets and pins, expand the scope of use of the power converter, and improve the practicality of the power converter. The Chinese standard or Australian standard pin assembly can be used for Chinese plugs and sockets or Australian plugs and sockets. Through the mutual coordination and conversion between the above-mentioned pin assemblies, users can replace different pins accordingly without worrying about the trouble caused by the mismatch between the plugs of the electronic devices they carry and the local power sockets. In addition, the US standard pin assembly, the UK standard pin assembly, the combined plug panel, the Chinese standard or Australian standard pin assembly can achieve sliding conversion between different pins by applying external force and shifting the protrusions, and the gap in the slide groove of any one of the pins is completely blocked after being pushed out, thereby preventing the risk of electric shock.

[0017] The above is an overview of the technical solution of the utility model. The utility model will be further explained below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the back of the utility model;

[0019] Figure 2 is a front view of the present invention;

[0020] Figure 3 is an internal structure diagram of the present invention;

[0021] Figure 4 is an exploded view of the US standard plug assembly;

[0022] Figure 5 is an exploded view of the UK standard plug assembly;

[0023] Figure 6 is an exploded view of the standard pin assembly;

[0024] FIG7 is a front view of the lower cover of the main body;

[0025] FIG8 is a perspective view of the lower cover of the main body;

[0026] FIG9 is a schematic diagram of the middle gauge pin assembly in the starting position;

[0027] FIG10 is a schematic diagram of the middle gauge pin assembly in motion;

[0028] FIG11 is a schematic diagram of the middle gauge pin assembly in the end position;

[0029] Figure 12 is a side schematic diagram of the present utility model;

[0030] Figure 13 is another side view of the present invention;

[0031] Figure 14 is a schematic diagram of the internal structure of the main body cover;

[0032] Figure 15 is a schematic diagram of the internal structure of the main body lower cover;

[0033] Figure 16 is a schematic structural diagram of a movable anti-electric shock baffle;

[0034] Figure 17 is a schematic structural diagram of a guide post;

[0035] FIG18 is a schematic diagram of the movable anti-electric shock baffle and the button and the fixed anti-electric shock baffle;

[0036] FIG19 is another schematic diagram of the movable anti-electric shock baffle and the button and the fixed anti-electric shock baffle;

[0037] In the figure: 10, pin fixing structure;

[0038] 20. Main body cover; 21. Socket hole;

[0039] 30. Main body lower cover; 31. Bottom plate; 32. Side plate; 33. Combined jack group;

[0040] 40. US-standard plug pin assembly; 41. First connector; 411. First connector body; 4111. First buckle; 4112. Second buckle; 4113. First connector positioning hole; 4114. First convex hole; 4115. First receiving slot; 412. First plug; 42. First button; 421. First button body; 4211. First button engaging portion; 42111. First pressing block; 4212. First movable engaging portion; 42121. First button movable slot; 422. First button; 44. First positioning post; 45. First guide post; 451. First ridge; 452. First notch; 46. First fixed anti-electric shock shield; 47. First movable anti-electric shock shield; 471. First button movable slot; 472. First mounting clearance slot;

[0041] 50. UK standard plug pin assembly; 51. Second connector; 511. Second connector body; 5111. Fourth clip; 5112. Fourth clip; 5113. Second connector positioning hole; 5114. Second convex hole; 5115. Second receiving slot; 512. Second plug; 52. Second button; 521. Second button body; 5211. Second button engaging portion; 52111. Second pressing block; 5212. Second movable engaging portion; 52121. Second button movable slot; 5213. Second button positioning hole; 522. Second button; 54. Second positioning post; 55. Second guide post; 551. Second ridge; 552. Second notch; 56. Second fixed anti-electric shock shield; 57. Second movable anti-electric shock shield; 571. Second button movable slot; 572. Second mounting clearance slot;

[0042] 80. Chinese or Australian standard plug pin assembly; 81. Fourth connector; 811. Fourth connector body; 8111. Sixth buckle; 8112. Fourth connector positioning hole; 8113. Fourth convex hole; 8114. Fourth receiving slot; 812. Fourth plug; 82. Fourth button; 821. Fourth button body; 8211. Fourth pressing block; 8212. Fourth button positioning hole; 8213. Fourth button movable slot; 822. Fourth button; 84. Fourth positioning post; 85. Fourth guide post; 851. Fourth ridge; 852. Fourth notch; 86. Fourth fixed anti-electric shock shield; 87. Fourth movable anti-electric shock shield; 871. Fourth button movable slot; 872. Fourth mounting clearance slot;

[0043] 901, first slide groove; 902, first movable baffle groove; 903, first fixed baffle groove; 904, second slide groove; 905, second movable baffle groove; 906, second fixed baffle groove; 910, fourth slide groove; 911, fourth movable baffle groove; 912, fourth fixed baffle groove. DETAILED DESCRIPTION

[0044] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings and preferred embodiments.

[0045] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0047] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0048] Please refer to Figures 1 to 19. The embodiment of the present invention provides an anti-electric shock baffle structure of a pin assembly, including a main body upper cover 20, a main body lower cover 30 installed on the main body upper cover 20, the main body upper cover 20 is provided with a socket hole 21, the main body lower cover 30 includes a bottom plate 31 and a side plate 32 vertically connected to the bottom plate 31, the bottom plate 32 is provided with a combined socket group 33, and also includes at least one pin assembly (40, 50, 80) arranged on the main body lower cover 30, the pin assembly (40, 50, 80) each including at least one live wire pin, at least one live wire pin, and at least one live wire pin. A zero line pin and a button (422, 522, 822); a convex strip (451, 551, 851) extending along the length direction of the guide column (45, 55, 85) is formed on the guide column (45, 55, 85); a notch (452, 552, 852) is provided at one end of the convex strip (451, 551, 851) connected to the bottom plate 31; the button member (42, 52, 82) includes a button (422, 522, 822); a fixed anti-electric shock baffle (46, 522) is formed on the inner side of the button (422, 522, 822) 6, 86), a movable anti-electric shock baffle (47, 57, 87) is provided between the fixed anti-electric shock baffle (46, 56, 86) and the button (422, 522, 822); a slide groove (901, 904, 910) for the button (422, 522, 822) to slide is formed on the side wall of the main body upper cover 20 and the main body lower cover 30, and a movable baffle groove (902, 905, 911) for the movable anti-electric shock baffle (47, 57, 87) to be embedded and slid is formed on the inner side of the slide groove (901, 904, 910), A fixed baffle groove (903, 906, 912) for the fixed anti-electric shock baffle (46, 56, 86) to slide is provided on the inner side of the movable baffle groove (902, 905, 911); a key movable groove (471, 571, 871) for the key (422, 522, 822) to move is provided in the middle of the movable anti-electric shock baffle (47, 57, 87); and an installation clearance groove (472, 572, 872) for the key (422, 522, 822) to pass through and install is provided on one side of the key movable groove (471, 571, 871).

[0049] [Corrected 28.03.2025 according to Rule 91] Regarding the specific shape setting of the key movable groove (471, 571, 871), as shown in Figures 17 to 19, the key movable groove (471, 571, 871) is in the shape of a rectangle or a circular arc runway as a whole, so that the keys (422, 522, 822) can move more smoothly in the key movable groove (471, 571, 871), and the movable anti-electric shock baffle (47, 57, 87) can more easily resist between the keys (422, 522, 822) and the slide groove (901, 904, 910), fill the gap between the slide groove (901, 904, 910) and the keys (422, 522, 822), and prevent the gap from leaking and allowing children and the like to insert objects through the gap during the use of the power converter, causing safety problems such as electric shock. In this embodiment, the key movable grooves (471, 571, 871) are in the shape of a circular arc runway, and their shapes match those of the sliding grooves (901, 904, 910) and the like.

[0050] Regarding the specific configuration of the pin assembly, the pin assembly includes a US standard pin assembly 40 , a UK standard pin assembly 50 , and a Chinese standard or Australian standard pin assembly 80 .

[0051] The US standard pin assembly 40 is suitable for US standard plugs and sockets. The UK standard pin assembly 50 is a UK standard plug and socket. The combined plug panel 60 can be assembled between the main body upper cover 20 and the main body lower cover 30, so as to expand the use of the power converter with the specified structure of the pin to be able to replace different sockets and pins, expand the scope of use of the power converter, adapt to different power sources in different countries, and improve the practicality of the power converter. The Chinese standard or Australian standard pin assembly 80 is suitable for Chinese plugs and sockets or Australian plugs and sockets. Through the mutual coordination and conversion between the above-mentioned pin assemblies, users can replace different pins accordingly without worrying about the trouble caused by the mismatch between the plugs of the electronic equipment they carry and the local power sockets. In addition, the US standard plug pin assembly 40, the UK standard plug pin assembly 50, the hybrid plug assembly 70 of the CEE7 / 7 standard, the combined plug panel 60, and the Chinese standard plug pin assembly 80 can achieve sliding conversion between different pins by applying external force, spring compression, and protrusion displacement, and the gap in the slide groove of any one of the pins is completely blocked after being pushed out, thereby preventing the risk of electric shock.

[0052] As shown in Figures 3, 4, 7 and 8, the specific structural setting of the US-standard plug pin assembly 40 includes a first connector 41, a first button member 42 slidably connected to the first connector 41, a first positioning column 44 vertically arranged on the inside of the main body lower cover 30 and passing through the first connector 41 in sequence, and a first guide column 45 vertically arranged perpendicular to the main body lower cover 30 and passing through the first connector 41; a first ridge 451 is formed on the first guide column 45 along the length direction of the first guide column 45, and a first notch 452 is provided at the end of the first ridge 451 corresponding to the bottom plate 31.

[0053] As for the specific structural setting of the first connector 41, as shown in Figures 3, 4, 7 and 8, the first connector 41 includes a first connector body 411, and a first pin 412 vertically connected to the first connector body 411 and matching the combined jack group 33. The upper end surface of the first connector body 411 is formed with a first clip 4111 that respectively corresponds to the two sides of the end of the first button member 42 close to the side plate 32, a second clip 4112 that corresponds to the end of the first button member 42 away from the side plate 32, a first connector positioning hole 4113 for the first positioning column 44 to pass through, a first convex hole 4114 for the first guide column 45 to pass through and move, and a first receiving groove 4115 for the first spring 43 to move.

[0054] Regarding the specific structural setting of the first pins 412, as shown in Figure 4, there are 4 groups of first pins 412, corresponding to US standard pins, so that the pin fixing structure 10 can be used in the United States and other relevant regions, thereby improving the applicability and practicality of the power converter.

[0055] As for the specific structural setting of the first button member 42, as shown in Figures 3, 4 and 12, the first button member 42 includes a first button body 421, and a first button 422 connected to one end of the first button body 421 and sliding between the main body upper cover 20 and the main body lower cover 30. The first button body 421 includes a first button clamping portion 4211 connected to one end of the first button 422, and a first movable clamping portion 4212 connected to the other end of the first button clamping portion 4211. The lower end surface of the first button clamping portion 4211 is formed with The first pressing block 42111 is movable within the first receiving groove 4115. The first movable clamping portion 4212 defines a first key movable groove 42121 that is aligned with the first convex hole 4114. The first connector positioning hole 4113 is sleeved onto the first positioning post 44. The first convex hole 4114 and the first key movable groove 42121 overlap and sleeve onto the first guide post 45. The first spring 43 is received within the first receiving groove 4115, with one end pressing against the innermost side of the first receiving groove 4115 and the other end pressing against the first pressing block 42111. The first buckle 4111 secures the first key clamping portion 4211, and the second buckle 4112 secures the first movable clamping portion 4212, thereby stably connecting the first connector 41 and the first key member 42.

[0056] To prevent the first button 422 from being accidentally inserted into the power converter by a child during use, as shown in Figures 3, 4, 9 to 15, a first fixed anti-electric shock shield 46 is provided on the inner side of the first button 422, and a first movable anti-electric shock shield 47 is further provided between the first fixed anti-electric shock shield 46 and the first button 422. A first sliding groove 901 for the first button 422 to slide is formed on the sidewalls of the main body upper cover 20 and the main body lower cover 30. The first sliding groove 901 has two first movable shield grooves 902 on both sides facing inward for the first movable anti-electric shock shield 47 to slide into. A first fixed shield groove 903 is provided inside the first movable shield groove 902 for the first fixed anti-electric shock shield 46 to slide. The first fixed anti-electric shock shield 46 slides up and down in the first movable shield groove 902 following the first button 422, and the first movable anti-electric shock shield 47 slides up and down in the first fixed shield groove 903 driven by the first button 422. The travel of the first button 422 is limited by the first fixed anti-electric shock baffle 46 , thereby preventing the first pin 412 from being excessively extended.

[0057] As shown in Figures 3, 4, and 9 to 15, the first movable anti-electric shock shield 47 is mounted on the first button 422. A first button movable slot 471 is defined in the middle of the first movable anti-electric shock shield 47 for the first button 422 to move. A first installation clearance slot 472 is defined on one side of the first button movable slot 471 for the first button 422 to pass through and install. The first movable anti-electric shock shield 47 allows the first button 422 to move within the first button movable slot 471 by allowing the first button 422 to pass through the first installation clearance slot 472.

[0058] The working principle of the US standard pin assembly 40 is:

[0059] As shown in Figures 3, 4, 7, 8, 12 to 15, when no external force is applied to the first button 422, the first button body 421 is supported by the first protrusion 451, causing the US-standard plug pin assembly 40 to be unable to move toward the bottom plate 31, so that the US-standard plug pin assembly 40 is positioned at the starting position (see Figure 9), and at this time the first pin 412 is located above the combined jack group 33. When external force is applied to the first button 422 on the first button member 42, the first button 422 moves in the first slide groove 901 toward the main body lower cover 30 and drives the first fixed anti-electric shock baffle 46 to move in the first fixed baffle groove 903 toward the main body lower cover 30. The first movable anti-electric shock baffle 47 first follows the first button 422 to move toward the main body lower cover 30 until it is pressed against the bottom end of the first movable baffle groove 902. The first button 422 continues to move in the first button movable groove 471 of the first movable anti-electric shock baffle 47, so that the first movable anti-electric shock baffle 47 blocks the gap between the first button 422 and the first slide groove 901, preventing children and the like from inserting objects through the gap during use of the power converter, causing safety problems such as electric shock. Among them, due to the positioning effect between the first convex hole 4114, the first key movable groove 42121, the first plug positioning hole 4113 and the first key positioning hole 4213 on the first key body 421, the first key component 42 moves toward the first connector 41 close to one end of the guide column. At this time, the position of the first convex hole 4114 on the first key body 421 is offset toward the other end of the first plug body 411 to make room for the first ridge 451 to move (refer to Figure 10), so that the first ridge 451 no longer supports the first button 422 body 421, and the US-standard pin assembly 40 can move along the first guide column 45 toward the bottom plate 31. When the first button body 421 moves to the first notch 452 of the first guide post 45, the external force is removed, and the first button body 421 moves toward one end of the side panel 32. The first button body 421 engages the first notch 452, positioning the US-standard plug assembly 40 at its final position (see Figure 11). At this point, the first pin 412 passes through the modular socket assembly 33 and extends outside the main body lower cover 30, preventing the US-standard plug assembly 40 from retracting on its own. The US-standard plug assembly 40 can slide along the first guide post 45 on the main body lower cover 30. The first convex hole 4114 mates with the first guide post 45 with the first ridge 451. The first convex hole 4114, the guide post with the first ridge 451, and the first notch 452 enable the US-standard plug assembly 40 to be positioned at its starting and final positions. This provides simplicity, stability, and prevents misoperation, while maintaining high positioning accuracy.

[0060] As shown in Figures 3, 5, 7, and 8, the specific structural arrangement of the British standard plug pin assembly 50 includes a second connector 51, a second button 52 connected to the second connector 51, a second positioning post 54 vertically disposed on the interior of the main body lower cover 30 and extending through the second connector 51, and a second guide post 55 perpendicular to the main body lower cover 30 and extending through the second connector 51. The second guide post 55 has a second ridge 551 formed along its length, and a second notch 552 is provided at one end of the second ridge 551 corresponding to the bottom plate 31.

[0061] As for the specific structural setting of the second connector 51, as shown in Figures 3, 5, 7 and 8, the second connector 51 includes a second connector body 511, and a second pin 512 vertically connected to the second connector body 511 and matching the combined jack group 33. The upper end surface of the second connector body 511 is formed with a third clip 5111 that respectively corresponds to the two sides of the end of the second button member 52 close to the side plate 32, a fourth clip 5112 that corresponds to the end of the second button member 52 away from the side plate 32, a second connector positioning hole 5113 for the second positioning column 54 to pass through, a second convex hole 5114 for the second guide column 55 to pass through and move, and a second receiving groove 5115 for the second spring 53 to move.

[0062] Regarding the specific structural setting of the second pins 512, as shown in Figure 5, the second pins 512 are divided into three groups, corresponding to British standard pins, so that the pin fixing structure 10 can be used in relevant areas such as the United Kingdom, thereby improving the applicability and practicality of the power converter.

[0063] As for the specific structural setting of the second button member 52, as shown in Figures 3, 5 and 12, the second button member 52 includes a second button body 521, and a second button 522 connected to one end of the second button body 521 and sliding between the main body upper cover 20 and the main body lower cover 30. The second button body 521 includes a second button clamping portion 5211 connected to one end of the second button 522, and a second movable clamping portion 5212 connected to the other end of the second button clamping portion 5211. A second pressing block 52111 is formed on the lower end surface of the second button clamping portion 5211 and is movable in the second receiving groove 5115. The second button clamping portion 5211 is provided with a second pressing block 52111, which is movable in the second receiving groove 5115. A second button positioning hole 5213 is defined in the middle of the connection between the connecting portion 5211 and the second movable clamping portion 5212, aligned with the second plugging positioning hole 5113. A second button 522 movable groove 52121 is defined in the second movable clamping portion 5212, aligned with the second convex hole 5114. The second plugging positioning hole 5113 is sleeved onto the second positioning post 54, and the second convex hole 5114 and the second button movable groove 52121 are overlapped and sleeved onto the second guide post 55. The second spring 53 is received in the second receiving groove 5115, with one end pressing against the innermost side of the second receiving groove 5115 and the other end pressing against the second pressing block 52111. The third buckle 5111 secures the second button clamping portion 5211, and the fourth buckle 5112 secures the second movable clamping portion 5212.

[0064] To prevent the second button 522 from being accidentally inserted into the power converter by a child during use, as shown in Figures 3, 5, 9 to 15, a second fixed anti-electric shock shield 56 is provided on the inner side of the second button 522, and a second movable anti-electric shock shield 57 is provided between the second fixed anti-electric shock shield 56 and the second button 522. A second sliding groove 904 is formed on the side walls of the main body upper cover 20 and the main body lower cover 30 for the second button 522 to slide. The second sliding groove 904 has a second movable baffle groove 905 on both sides facing inward for the second movable anti-electric shock shield 57 to slide into. The second movable baffle groove 905 has a second fixed baffle groove 906 inside which the second fixed anti-electric shock shield 56 slides. The second fixed anti-electric shock shield 56 slides up and down in the second movable baffle groove 905 following the second button 522, and the second movable anti-electric shock shield 57 slides up and down in the second fixed baffle groove 906 driven by the second button 522. The travel of the second button 522 is limited by the second fixed anti-electric shock shield 56 , thereby preventing the second pin 512 from being excessively extended.

[0065] As shown in Figures 3, 5, and 9 to 15, the second movable anti-electric shock shield 57 is mounted on the second button 522. A second button movable slot 571 is defined in the middle of the second movable anti-electric shock shield 57 for the second button 522 to move. A second mounting clearance slot 572 is defined on one side of the second button movable slot 571 for the second button 522 to pass through and install. The second movable anti-electric shock shield 57 allows the second button 522 to move within the second button movable slot 571 by allowing the second button 522 to pass through the second mounting clearance slot 572.

[0066] The working principle of the British standard pin assembly is:

[0067] As shown in Figures 3, 5, 7, 8, and 12 to 15, when no external force is applied to the second button 522, the second button body 521 is supported by the second protrusion 551, causing the British standard plug pin assembly 50 to be unable to move toward the bottom plate 31 (see Figure 9), so that the British standard plug pin assembly 50 is positioned at the starting position, and at this time the second pin 512 is located above the combined jack group 33. When external force is applied to the second button 522 on the second button member 52, the second button 522 moves in the second slide groove 904 toward the main body lower cover 30 and drives the second fixed anti-electric shock baffle 56 to move in the second fixed baffle groove 906 toward the main body lower cover 30. The second movable anti-electric shock baffle 57 first follows the second button 522 to move toward the main body lower cover 30 until it is pressed against the bottom end of the second movable baffle groove 905. The second button 522 continues to move in the second button movable groove 571 of the second movable anti-electric shock baffle 57, so that the second movable anti-electric shock baffle 57 blocks the gap between the second button 522 and the second slide groove 904, preventing children and the like from inserting objects through the gap during use of the power converter, causing safety problems such as electric shock. Due to the positioning effect between the second convex hole 5114 on the second button body 521, the movable groove 52121 of the second button 522, the second plug positioning hole 5113, and the second button positioning hole 5213, the second button member 52 moves toward the second connector 51 close to the guide column end (refer to Figure 10). At this time, the position of the second convex hole 5114 on the second button body 521 is offset toward the other end of the second plug body 511 to make room for the second protrusion 551 to move, so that the second protrusion 551 no longer supports the second button body 521, and the British standard pin assembly 50 can move along the second guide column 55 toward the bottom plate 31. When the second button body 521 moves to the position of the second notch 552 of the second guide post 55, the external force is removed, and the second button body 521 moves toward one end of the side panel 32. The second button body 521 engages with the second notch 552 (see Figure 11), positioning the UK-standard plug assembly 50 at its final position. The UK-standard plug assembly 50 cannot retract on its own. At this point, the second pin 512 passes through the combined socket assembly 33 and extends outside the main body lower cover 30. The UK-standard plug assembly 50 can slide along the second guide post 55 on the main body lower cover 30. The second convex hole 5114 mates with the second guide post 55 with the second protrusion 551. The second convex hole 5114, the guide post with the second protrusion 551, and the second notch 552 achieve the starting and ending positions of the UK-standard plug assembly 50. This is simple, convenient, and stable, preventing misoperation and providing high positioning accuracy for the UK-standard plug assembly 50.

[0068] As for the specific structural setting of the Chinese or Australian standard plug pin assembly 80, as shown in Figures 3, 6, 7 and 8, the Chinese standard plug pin assembly 80 includes a fourth connector 81, a fourth button member 82 connected to the fourth connector 81, a fourth positioning column 84 vertically arranged on the inside of the main body lower cover 30 and passing through the fourth connector 81 and the fourth button member 82 in sequence, and at least one fourth guide column 85 perpendicular to the main body lower cover 30 and passing through the fourth connector 81; a fourth ridge 851 is formed on the fourth guide column 85 along the length direction of the fourth guide column 85, and a fourth notch 852 is provided at the end of the fourth ridge 851 corresponding to the bottom plate 31.

[0069] As for the specific structural setting of the fourth connector 81, as shown in Figures 3, 6, 7 and 8, the fourth connector 81 includes a fourth connector body 811, and a fourth pin 812 vertically connected to the fourth connector body 811 and matching the combined jack group 33. The upper end surface of the fourth connector body 811 is formed with at least one sixth clip 8111 that is clamped on the side of the fourth button member 82, a fourth connector positioning hole 8112 for the fourth positioning column 84 to pass through, at least one fourth convex hole 8113 for the fourth guide column 85 to pass through and move, and a fourth receiving groove 8114 for the fourth spring 83 to move.

[0070] Regarding the specific structural setting of the fourth pins 812, as shown in Figure 6, the fourth pins 812 are divided into three groups, corresponding to the standard pins, so that the pin fixing structure 10 can be used in relevant regions such as China, thereby improving the applicability and practicality of the power converter.

[0071] As for the specific structural setting of the fourth button member 82, as shown in Figures 3, 6, 7, 8, 14 to 16, the fourth button member 82 includes a fourth button body 821, and a fourth button 822 connected to one end of the fourth button body 821 and sliding between the main body upper cover 20 and the main body lower cover 30. A fourth pressing block 8211 is formed on the lower end surface of one end of the fourth button body 821 close to the fourth button 822 and movable in the fourth receiving groove 8114. A fourth pressing block 8211 is formed on the fourth button 822 and is opposite to the fourth plug positioning hole 81. The fourth button 822 positioning hole 8212 is provided on the fourth guide post 85, and a fourth button movable groove 8213 is provided opposite to the fourth convex hole 8113. The fourth insertion positioning hole 8112 and the fourth button positioning hole 8212 are overlapped and sleeved on the fourth positioning post 84. The fourth convex hole 8113 and the fourth button 822 movable groove 8213 are overlapped and sleeved on the fourth guide post 85. The fourth spring 83 is received in the fourth receiving groove 8114, with one end pressing against the innermost side of the fourth receiving groove 8114 and the other end pressing against the fourth pressing block 8211. The sixth buckle 8111 fastens the main body 821 of the fourth button 822.

[0072] In order to prevent the fourth button 822 from being accidentally inserted into the power converter by children during use and causing safety problems, as shown in Figures 3, 6, 9 to 15, a fourth fixed anti-electric shock baffle 86 is provided on the inner side of the fourth button 822, and a fourth movable anti-electric shock baffle 87 is also provided between the fourth fixed anti-electric shock baffle 86 and the fourth button 822; a fourth sliding groove 910 for the fourth button 822 to slide is formed on the side walls of the main body upper cover 20 and the main body lower cover 30, and a fourth movable baffle groove 911 for the fourth movable anti-electric shock baffle 87 to be embedded and slid is respectively formed on the two inward sides of the fourth sliding groove 910, and a fourth fixed baffle groove for the fourth fixed anti-electric shock baffle 86 to slide is provided on the inner side of the fourth movable baffle groove 911. The fourth fixed anti-electric shock shield 86 at 912 slides up and down within the fourth movable shield slot 911 following the fourth button 822. The fourth movable anti-electric shock shield 87 slides up and down within the fourth fixed shield slot, driven by the fourth button 822. The travel of the fourth button 822 is limited by the fourth fixed anti-electric shock shield 86, thereby preventing the fourth pin 812 from extending excessively.

[0073] As shown in Figures 3, 6, and 9 to 15, the fourth movable anti-electric shock shield 87 is mounted on the fourth button 822. A fourth button movable slot 871 is defined in the middle of the fourth movable anti-electric shock shield 87 for the fourth button 822 to move. A fourth installation clearance slot 872 is defined on one side of the fourth button movable slot 871 for the fourth button 822 to pass through and install. The fourth movable anti-electric shock shield 87 allows the fourth button 822 to move within the fourth button movable slot 871 by allowing the fourth button 822 to pass through the fourth installation clearance slot 872.

[0074] The working principle of the Chinese or Australian standard plug assembly is:

[0075] As shown in Figures 3, 6, 7, 8, 13 to 15, when no external force is applied to the fourth button 822, the fourth button body 821 is supported by the fourth protrusion 851, causing the middle gauge pin assembly 80 to be unable to move toward the bottom plate 31, so that the middle gauge pin assembly 80 is positioned at the starting position, and at this time the fourth pin 812 is located above the combined socket group 33. As shown in Figure 10, when external force is applied to the fourth button 822 on the fourth button member 82, the fourth button 822 moves in the fourth slide groove 910 toward the main body lower cover 30 and drives the fourth fixed anti-electric shock baffle 86 to move in the fourth fixed baffle groove toward the main body lower cover 30, and the fourth movable anti-electric shock baffle 87 first follows the fourth button 822 to move toward the main body lower cover 30 until it is pressed against the bottom end of the fourth movable baffle groove 911, and the fourth button 822 continues to move in the fourth button movable groove 871 of the fourth movable anti-electric shock baffle 87, so that the fourth movable anti-electric shock baffle 87 blocks the gap between the fourth button 822 and the fourth slide groove 910, preventing children and the like from inserting objects through the gap during use of the power converter, causing safety problems such as electric shock. Due to the positioning effect between the fourth convex hole 8113, the fourth button movable groove 8213, the fourth plug positioning hole 8112 and the fourth button positioning hole 8212 on the fourth button body 821, the fourth button component 82 moves toward the fourth connector 81 toward the middle end of the main body lower cover 30. At this time, the position of the fourth convex hole 8113 on the fourth button body 821 is offset toward the other end of the fourth plug body 811 to make room for the fourth protrusion 851 to move, so that the fourth protrusion 851 no longer supports the fourth button body 821, and the middle-standard pin assembly 80 can move along the fourth guide column 85 toward the bottom plate 31. As shown in FIG11 , when the fourth button body 821 moves to the position of the fourth notch 852 of the fourth guide post 85 , the external force is removed, and the fourth button body 821 moves toward one end of the side panel 32 . The fourth button body 821 snaps into the fourth notch 852 , positioning the standard pin assembly 80 at the final position. At this point, the fourth pin 812 passes through the combined socket assembly 33 and extends outside the main body lower cover 30 , preventing the standard pin assembly 80 from retracting on its own. The standard pin assembly 80 can slide along the fourth guide post 85 on the main body lower cover 30 , and the fourth convex hole 8113 matches the fourth guide post 85 with the fourth ridge 851 . The fourth convex hole 8113 , the guide post with the fourth ridge 851 , and the fourth notch 852 enable the standard pin assembly 80 to be positioned at its starting and final positions. This is simple, convenient, and stable, preventing misoperation and providing high positioning accuracy for the standard pin assembly 80 .

[0076] The combined socket set 33 and the socket hole 21 correspond to the first plug pin 412 , the second plug pin 512 , the third plug pin 712 , and the fourth plug pin 812 , respectively.

[0077] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] It should be noted that the anti-electric shock baffle structure of the pin assembly disclosed in this utility model is an improvement to a specific structure, and the specific control method is not the innovation of this utility model. The pins and other components involved in this utility model can be common standard parts or components known to those skilled in the art. Their structure, principles, and control methods are all known to those skilled in the art through technical manuals or routine experimental methods.

Claims

1. An anti-electric shock baffle structure of a pin assembly, comprising a main body upper cover, a main body lower cover mounted on the main body upper cover, the main body upper cover is provided with a socket hole, the main body lower cover comprises a bottom plate and a side plate vertically connected to the bottom plate, the bottom plate is provided with a combined socket group, characterized in that: It also includes at least one pin assembly arranged on the lower cover of the main body, and the pin assembly includes at least one live wire pin, at least one neutral wire pin, and a button. A fixed anti-electric shock baffle is formed on the inner side of the button, and a movable anti-electric shock baffle is arranged between the fixed anti-electric shock baffle and the button; sliding grooves for the button to slide are formed on the side walls of the main body upper cover and the main body lower cover, and movable baffle grooves for the movable anti-electric shock baffle to slide are respectively formed on the inner sides of the sliding grooves, a key movable groove for the key to move is formed in the middle of the movable anti-electric shock baffle, and an installation clearance groove for the key to pass through and install is opened on one side of the key movable groove.

2. The anti-electric shock baffle structure of the pin assembly according to claim 1, characterized in that: The key movable groove is in the shape of a rectangle or a circular track as a whole.

3. The anti-electric shock baffle structure of the pin assembly according to claim 1, characterized in that: The pin assembly includes a US standard pin assembly, a UK standard pin assembly, and a Chinese standard or Australian standard pin assembly.

4. The anti-electric shock baffle structure of the pin assembly according to claim 3, characterized in that: The US standard plug pin assembly includes a first connector, a first button connected to the first connector, a first positioning column vertically arranged on the inside of the main body lower cover and passing through the first connector in sequence, and a first guide column perpendicular to the main body lower cover and passing through the first connector; a first convex strip is formed on the first guide column along the length direction of the first guide column, and a first notch is provided at one end of the first convex strip corresponding to the bottom plate.

5. The anti-electric shock baffle structure of the pin assembly according to claim 4, characterized in that: The first connector includes a first plug body, and a first pin vertically connected to the first plug body and matching the combined jack group, and the upper end surface of the first plug body is formed with a first buckle corresponding to the two sides of the first button member close to the side plate, a second buckle connected to the end of the first button member away from the side plate, a first plug positioning hole for the first positioning column to pass through, a first convex hole for the first guide column to pass through and move, and a first receiving groove for the first spring to move; the first button member includes a first button body, and a first button connected to one end of the first button body and sliding between the main body upper cover and the main body lower cover, the first button body includes a first button clamping part connected to one end of the first button, and a first movable clamping part connected to the other end of the first button clamping part, a first pressing block movable in the first receiving groove is formed on the lower end surface of the first button clamping part, a first button positioning hole corresponding to the first plug positioning hole is formed in the middle of the connection between the first button clamping part and the first movable clamping part, and the first movable clamping part is connected to the first button clamping part. The first convex hole is provided with a first key movable groove which is directly opposite to the first convex hole, the first plug positioning hole and the first key positioning hole are overlapped and sleeved on the first positioning column, and the first convex hole and the first key movable groove are overlapped and sleeved on the first guide column; the first spring is received in the first receiving groove and one end is pressed against the innermost side of the first receiving groove and the other end is pressed against the first pressing block; a first fixed anti-electric shock baffle is provided on the inner side of the first key, and a first movable anti-electric shock baffle is also provided between the first fixed anti-electric shock baffle and the first key; a first sliding groove for the first key to slide is formed on the side walls of the main body upper cover and the main body lower cover, and a first movable baffle groove for the first movable anti-electric shock baffle to be embedded and slid is respectively formed on the two sides of the first sliding groove facing inward, and a first fixed baffle groove for the first fixed anti-electric shock baffle to slide is provided on the inner side of the first movable baffle groove; a first key movable groove for the first key to move is provided in the middle part of the first movable anti-electric shock baffle, and a first installation clearance groove for the first key to pass through and install is provided on one side of the first key movable groove.

6. The anti-electric shock baffle structure of the pin assembly according to claim 1, characterized in that: The British standard plug pin assembly includes a second connector, a second button connected to the second connector, a second positioning column vertically arranged on the inside of the main body lower cover and passing through the second connector in sequence, and a second guide column perpendicular to the main body lower cover and passing through the second connector; a second convex strip is formed on the second guide column along the length direction of the second guide column, and a second notch is provided at one end of the second convex strip corresponding to the bottom plate.

7. The anti-electric shock baffle structure of the pin assembly according to claim 6, characterized in that: The second connector includes a second plug body, and a second pin vertically connected to the second plug body and matching the combined jack group, the upper end surface of the second plug body is formed with a fourth clip that respectively corresponds to the two sides of the second button member close to the side plate, a fourth clip that corresponds to the end of the second button member away from the side plate, a second plug positioning hole for the second positioning column to pass through, a second convex hole for the second guide column to pass through and move, and a second receiving groove for the second spring to move; the second button member includes a second button body, and a second button connected to one end of the second button body and sliding between the main body upper cover and the main body lower cover, the second button body includes a second button clamping portion connected to one end of the second button, and a second movable clamping portion connected to the other end of the second button clamping portion, a second pressing block that moves in the second receiving groove is formed on the lower end surface of the second button clamping portion, and the second movable clamping portion is provided with a second The key movable groove, the second plug-in positioning hole is sleeved on the second positioning column, the second convex hole and the second key movable groove are overlapped and sleeved on the second guide column; the second spring is accommodated in the second receiving groove and one end is pressed against the innermost side of the second receiving groove and the other end is pressed against the second pressing block; a second fixed anti-electric shock baffle is provided on the inner side of the second button, and a second movable anti-electric shock baffle is also provided between the second fixed anti-electric shock baffle and the second button; a second sliding groove for the second button to slide is formed on the side walls of the main body upper cover and the main body lower cover, and a second movable baffle groove for the second movable anti-electric shock baffle to be embedded and slid is respectively formed on the two sides facing inward of the second sliding groove, and a second fixed baffle groove for the second movable anti-electric shock baffle to slide is provided on the inner side of the second movable baffle groove; a second key movable groove for the second button to move is provided in the middle part of the second movable anti-electric shock baffle, and a second installation yield groove for the second button to pass through and install is provided on one side of the second key movable groove.

8. The anti-electric shock baffle structure of the pin assembly according to claim 1, characterized in that: The Chinese or Australian standard plug assembly includes a fourth connector, a fourth button connected to the fourth connector, a fourth positioning column vertically arranged on the inside of the main body lower cover and passing through the fourth connector in sequence, and at least one fourth guide column perpendicular to the main body lower cover and passing through the fourth connector; a fourth convex strip is formed on the fourth guide column along the length direction of the fourth guide column, and a fourth notch is provided at one end of the fourth convex strip corresponding to the bottom plate.

9. The anti-electric shock baffle structure of the pin assembly according to claim 8, characterized in that: The fourth connector includes a fourth plug body and a fourth pin vertically connected to the fourth plug body and matching the combined jack group, the upper end surface of the fourth plug body is formed with at least one sixth buckle that is clamped on the side of the fourth button member, a fourth plug positioning hole for the fourth positioning column to pass through, at least one fourth convex hole for the fourth guide column to pass through and move, and a fourth receiving groove for the fourth spring to move; the fourth button member includes a fourth button body and a fourth button connected to one end of the fourth button body and sliding between the main body upper cover and the main body lower cover, the fourth button body having a fourth pressing block movable in the fourth receiving groove formed on the lower end surface of one end of the fourth button body close to the fourth button, the fourth button is provided with a fourth button positioning hole corresponding to the fourth plug positioning hole and a fourth button movable groove corresponding to the fourth convex hole, the fourth plug positioning hole and the fourth button positioning hole are overlapped and sleeved on the fourth On the fourth positioning column, the fourth convex hole and the fourth key movable groove are overlapped and sleeved on the fourth guide column; the fourth spring is accommodated in the fourth receiving groove and one end is pressed against the innermost side of the fourth receiving groove and the other end is pressed against the fourth pressing block; a fourth fixed anti-electric shock baffle is provided on the inner side of the fourth button, and a fourth movable anti-electric shock baffle is also provided between the fourth fixed anti-electric shock baffle and the fourth button; a fourth sliding groove for the fourth key to slide is formed on the side walls of the main body upper cover and the main body lower cover, and a fourth movable baffle groove for the fourth movable anti-electric shock baffle to be embedded and slide is respectively formed on the two sides facing inward of the fourth sliding groove, and a fourth fixed baffle groove for the fourth movable anti-electric shock baffle to slide is opened on the inner side of the fourth movable baffle groove; a fourth key movable groove for the fourth key to move is opened in the middle part of the fourth movable anti-electric shock baffle, and a fourth installation yielding groove for the fourth key to pass through and install is opened on one side of the fourth key movable groove.

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