A British standard plug

Abstract

The utility model discloses a kind of British standard plugs, including inner shelf and pressure cover, inner shelf is equipped with first electric plug and the recessed cavity for installing fuse tube, the top of inner shelf is equipped with the first terminal tab and second terminal tab of recessed cavity insertion, first terminal tab is electrically connected with first electric plug, and the extension end of second terminal tab is equipped with first wire clamp head;Pressure cover includes first cover body and second cover body;Wherein, first cover body is covered on first terminal tab and second terminal tab, and is welded together with inner shelf, and second cover body is connected with inner shelf buckle connection.The utility model British standard plug, first cover body is partially coated to first terminal tab and second terminal tab, and stable sealing is formed with inner shelf by welding mode, plugging the percolation path of molten plastic in injection molding process, prevent plastic material through terminal tab gap or buckle gap and enter fuse tube recessed cavity, ensure that recessed cavity remains complete, to avoid product scrapping problem caused by glue filling pollution.

Description

Technical Field

[0001] This utility model relates to the field of British standard plug technology, specifically to a British standard plug. Background Technology

[0002] In order to improve safety, power plugs are usually equipped with a removable fuse tube, and a cavity is made in the plug structure to accommodate the fuse tube.

[0003] In existing technologies, power cord plugs typically consist of an inner frame, a pressure cover, terminal pieces, and wire clamps. The pressure cover and inner frame are snapped together before being placed in an injection mold, and the outer shell is formed through injection molding. However, in actual production, gaps exist between the terminal pieces and the inner frame when they are inserted, and the snap-fit ​​connection between the pressure cover and the inner frame is difficult to completely seal. During injection molding, molten plastic can easily seep through these structural gaps into the fuse tube receiving cavity, causing the cavity to become filled and blocked. This prevents the fuse tube from being installed properly, ultimately resulting in product scrap, reduced production yield, and increased manufacturing costs. Utility Model Content

[0004] To overcome the defects described in the prior art, this utility model provides a British standard plug. The first cover partially covers the first terminal piece and the second terminal piece, and forms a stable seal with the inner frame by welding. This seals the seepage path of the molten plastic during the injection molding process, preventing plastic material from entering the fuse tube cavity through the gaps between the terminal pieces or the snap-fit ​​seams, ensuring that the cavity remains intact, and thus avoiding product scrapping due to glue contamination.

[0005] The technical solution adopted by this utility model to solve its problem is:

[0006] A British standard plug includes:

[0007] The inner frame has a first electrical plug and a cavity for installing a fuse tube. The top of the inner frame has a first terminal piece and a second terminal piece that extend into the cavity. The first terminal piece is electrically connected to the first electrical plug, and the extended end of the second terminal piece has a first wire clamp.

[0008] A pressure cap, comprising a first cap body and a second cap body;

[0009] The first cover is fitted onto the first terminal piece and the second terminal piece and welded together with the inner frame, while the second cover is fastened to the inner frame.

[0010] Furthermore, the inner frame is provided with a first groove and a second groove, the first terminal piece is snapped into the first groove, and the second terminal piece is snapped into the second groove;

[0011] The first cover is provided with a first protrusion and a second protrusion; when the first cover is closed on the first terminal piece and the second terminal piece, the first protrusion is engaged in the first groove and abuts against the first terminal piece, and the second protrusion is engaged in the second groove and abuts against the second terminal piece.

[0012] Furthermore, the first groove is provided with a first notch and a first connecting hole communicating with the cavity; the first terminal piece is provided with a first bent piece electrically connected to one end of the fuse tube;

[0013] When the first terminal piece is snapped into the first groove, the first bent piece extends into the cavity through the first connection hole, and one end of the first terminal piece extends out through the first notch and is electrically connected to the first electrical pin.

[0014] Furthermore, the second groove is provided with a second notch and a second connecting hole communicating with the cavity; the second terminal piece is provided with a second bent piece electrically connected to the other end of the fuse tube;

[0015] When the second terminal piece is snapped into the second groove, the second bent piece passes through the second connecting hole and extends into the cavity, and one end of the second terminal piece extends out through the second notch to form the first wire clamp head.

[0016] Furthermore, a first positioning post is provided in the first groove, and a first positioning hole is provided on the first terminal piece. When the first terminal piece is engaged in the first groove, the first positioning hole engages with the first positioning post for positioning.

[0017] The second groove is also provided with a second positioning post, and the second terminal piece is provided with a second positioning hole. When the second terminal piece is engaged in the second groove, the second positioning hole and the second positioning post are engaged and positioned.

[0018] Furthermore, the first protrusion has a first positioning groove that engages with the first positioning post, and the second protrusion has a second positioning groove that engages with the second positioning post.

[0019] Furthermore, the first protrusion is provided with a first protrusion that mates with the first notch, and the second protrusion is provided with a second protrusion that mates with the second notch.

[0020] Furthermore, the inner frame is provided with a first fastening position, and the second cover is provided with a second fastening position corresponding to the position of the first fastening position. When the second cover is placed on the inner frame, the first fastening position and the second fastening position are fastened together.

[0021] Furthermore, the second cover has a through hole that mates with the first cover. When the second cover is fastened to the inner frame, the first cover is engaged in the through hole.

[0022] Furthermore, it also includes a second electrical pin and a third electrical pin, the second electrical pin being electrically connected to a third terminal piece, the third electrical pin being electrically connected to a fourth terminal piece, and the third terminal piece extending to its end having a corresponding second wire clamp, and the fourth terminal piece extending to its end having a corresponding third wire clamp.

[0023] In summary, this utility model has the following technical effects:

[0024] 1. The British standard plug of this utility model has a first cover that partially covers the first terminal piece and the second terminal piece, and forms a stable seal with the inner frame by welding. This seals the seepage path of molten plastic during the injection molding process, prevents plastic material from entering the fuse tube cavity through the gaps between the terminal pieces or the snap-fit ​​seams, ensures that the cavity remains intact, and avoids product scrapping problems caused by glue contamination.

[0025] 2. This utility model of the British standard plug improves the sealing reliability during the injection molding stage, effectively ensures the integrity of the fuse tube installation space, and enhances the product yield and manufacturing stability. It has good practical value and promotion prospects. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the British standard plug of this utility model from one perspective;

[0027] Figure 2 This is a schematic diagram of the structure of the British standard plug of this utility model from another perspective;

[0028] Figure 3 This is an exploded view of the UK standard plug of this utility model;

[0029] Figure 4 This is a schematic diagram of the cavity structure in the UK standard plug of this utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the first groove and the second groove in the UK standard plug of this utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the first cover in the British standard plug of this utility model;

[0032] Figure 7 This is a schematic diagram of the second cover body in the UK standard plug of this utility model from one perspective.

[0033] Figure 8 This is a schematic diagram of the second cover in the UK standard plug of this utility model from a second perspective.

[0034] The meanings of the reference numerals in the attached figures are as follows:

[0035] 1. Inner frame; 11. Cavity; 12. First groove; 121. First connecting hole; 122. First notch; 123. First positioning post; 13. Second groove; 131. Second connecting hole; 132. Second notch; 133. Second positioning post; 14. First latch; 15. Third cover; 2. First electrical pin; 21. First terminal piece; 211. First bent piece; 212. First positioning hole; 22. Second terminal piece; 221. Second bent piece; 222. Second positioning hole; 23. First wire clamp; 3. Second electrical pin; 31. Third terminal piece; 32. Second wire clamp; 4. Third electrical pin; 41. Fourth terminal piece; 42. Third wire clamp; 5. First cover; 51. First protrusion; 511. First positioning groove; 512. First protrusion; 513. First protruding edge; 52. Second protrusion; 521. Second positioning groove; 522. Second protrusion; 523. Second protruding edge; 53. Third protrusion; 54. Fourth protrusion; 6. Second cover; 61. Through hole; 62. Second snap-fit; 63. Third groove; 64. Fourth groove; 65. Fifth groove. Detailed Implementation

[0036] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0037] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation 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 module 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.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0039] like Figure 1-8The illustrated British standard plug includes an inner frame 1 and a pressure cover. The inner frame 1 has a first electrical pin 2 and a cavity 11 for installing a fuse tube (not shown in the figure). A first terminal piece 21 and a second terminal piece 22 extending into the cavity 11 are provided on the top of the inner frame 1. The first terminal piece 21 is electrically connected to the first electrical pin 2. The extended end of the second terminal piece 22 is provided with a first wire clamp 23 for connecting a wire.

[0040] The pressure cap includes a first cap 5 and a second cap 6. The first cap 5 covers the first terminal piece 21 and the second terminal piece 22 and is fixedly connected to the inner frame 1 by welding. The second cap 6 is connected to the inner frame 1 by snap-fit. By covering and fixing the first cap 5 with welding, a partial sealing structure can be formed between the first terminal piece 21 and the second terminal piece 22, effectively sealing the gap between the first terminal piece 21, the second terminal piece 22 and the inner frame 1. This prevents molten plastic from seeping into the cavity 11 of the fuse tube during injection molding, avoiding problems such as blockage and contamination of the cavity 11. This improves the sealing reliability during the injection molding stage, ensures the integrity of the fuse tube installation area, and thus improves product yield and production stability.

[0041] It should be noted that although there is still a gap between the second cover 6 and the inner frame 1, even if plastic enters this gap area during the injection molding process, it will not affect the function of the plug structure. On the contrary, it can enhance the fixing strength between the second cover 6 and the inner frame 1. The key is that this structure, through the sealing design of the first cover 5, mainly solves the problem of plastic material flowing into the cavity 11 through the gap between the first terminal piece 21 and the second terminal piece 22, causing the product to be scrapped.

[0042] See Figure 5 The inner frame 1 is provided with a first groove 12 and a second groove 13, which are used to snap the first terminal piece 21 and the second terminal piece 22 respectively; the first cover 5 is provided with a first protrusion 51 and a second protrusion 52. The first protrusion 51 is snapped into the first groove 12 and abuts against the first terminal piece 21, and the second protrusion 52 is snapped into the second groove 13 and abuts against the second terminal piece 22. Structurally, this restricts the displacement of the terminal pieces during the injection molding process, while further reducing the mating gap and enhancing the sealing performance.

[0043] Furthermore, the first groove 12 is provided with a first notch 122 and a first connecting hole 121 communicating with the cavity 11. The first terminal piece 21 is provided with a first bent piece 211 for electrical connection with the fuse tube. When the first terminal piece 21 is inserted into the first groove 12, one end of it is connected to the first electrical pin 2 through the first notch 122, and the first bent piece 211 extends through the first connecting hole 121 into the cavity 11 to achieve a conductive connection to one end of the fuse tube. Similarly, the second groove 13 is provided with a second notch 132 and a second connecting hole 131 communicating with the cavity 11. When the second terminal piece 22 is inserted into the second groove 13, one end of it extends through the second notch 132 to form a first clamping head 23 for clamping the wire, and the second bent piece 221 extends through the second connecting hole 131 into the cavity 11 to achieve a conductive connection to the other end of the fuse tube.

[0044] To improve the snap-fit ​​accuracy, a first positioning post 123 is provided in the first groove 12, and a first positioning hole 212 is provided on the first terminal piece 21. When the first terminal piece 21 is snapped into the first groove 12, the first positioning hole 212 and the first positioning post 123 snap-fit ​​and position it. A second positioning post 133 is provided in the second groove 13, and a second positioning hole 222 is provided on the second terminal piece 22. When the second terminal piece 22 is snapped into the second groove 13, the second positioning hole 222 and the second positioning post 133 snap-fit ​​and position it.

[0045] See Figure 6 The first protrusion 51 has a first positioning groove 511 that engages with the first positioning post 123, and the second protrusion 52 has a second positioning groove 521 that engages with the second positioning post 133. Additionally, the first protrusion 51 has a first protrusion 512 that mates with the first notch 122, and the second protrusion 52 has a second protrusion 522 that mates with the second notch 132, further improving the fit between the first cover 5 and the inner frame 1, the first terminal piece 21, and the second terminal piece 22, thereby enhancing the injection molding sealing effect. The first protrusion 51 also has a first protruding edge 513 for partially enclosing the first terminal piece 21, and the second protrusion 52 has a second protruding edge 523 for partially enclosing the second terminal piece 22, further pressing and defining the terminal piece position. This not only enhances the overall structural resistance to injection molding impact but also effectively reduces gaps caused by terminal piece displacement, thereby further improving the sealing reliability and product consistency during the injection molding stage.

[0046] In addition, the inner frame 1 is provided with a first fastening position 14, and the second cover 6 is provided with a corresponding second fastening position 62, which are used to achieve a stable fastening connection with the inner frame 1; the second cover 6 is also provided with a through hole 61 that cooperates with the first cover 5. During installation, the first cover 5 can be inserted and snapped into the through hole 61 to enhance the positioning and fixing effect between the first cover 5 and the second cover 6.

[0047] Furthermore, it also includes a second electrical pin 3 and a third electrical pin 4. The second electrical pin 3 is electrically connected to the third terminal piece 31, and the third electrical pin 4 is electrically connected to the fourth terminal piece 41. The third terminal piece 31 extends to its end and is provided with a second wire clamp 32 for clamping and connecting the wire, and the fourth terminal piece 41 extends to its end and is provided with a third wire clamp 42 for clamping and connecting the wire, so as to meet the wiring requirements of multi-core power cords and improve the universality and wiring convenience of the plug.

[0048] In this embodiment, a third cover 15 is also included, which is used to cover and enclose the cavity 11 disposed on the inner frame 1. It can effectively cover and protect the installation area of ​​the fuse tube, and further improve the sealing and structural integrity of the cavity 11 area, preventing external foreign objects from entering or affecting the stability of the internal electrical connection.

[0049] In addition, such as Figure 8 As shown, the second cover 6 has multiple grooves for positioning and installing the wire clamps, specifically including: a third groove 63 for engaging the first wire clamp 23, a fourth groove 64 for engaging the second wire clamp 32, and a fifth groove 65 for engaging the third wire clamp 42. This facilitates precise positioning and stable fixation of the wire clamps in the cover, preventing them from shifting during subsequent injection molding or use, thereby improving wiring reliability and overall structural stability.

[0050] Furthermore, the first cover 5 is provided with a third protrusion 53 and a fourth protrusion 54. The third protrusion 53 is used to abut against the extension of the second terminal piece 22 after the first cover 5 is welded to the inner frame 1, and the fourth protrusion 54 abuts against the extension of the fourth terminal piece 41. This can further enhance the bonding and fastening effect between the first cover 5 and the terminal piece, which not only improves the structural strength after assembly, but also enhances the injection molding sealing performance of this area, preventing molten plastic from seeping into the critical electrical connection area, thereby effectively reducing the risk of product failure caused by poor packaging and improving the yield and safety of the plug.

[0051] In summary, the British standard plug of this utility model has a first cover 5 that partially covers the first terminal piece 21 and the second terminal piece 22, and forms a stable seal with the inner frame by welding. This seals the seepage path of the molten plastic during the injection molding process, prevents the plastic material from entering the fuse tube cavity 11 through the gaps between the terminal pieces or the snap-fit ​​seams, and ensures that the cavity 11 remains intact, thereby avoiding product scrapping problems caused by glue contamination.

[0052] This utility model of a UK standard plug improves the sealing reliability during the injection molding stage, effectively ensures the integrity of the fuse tube installation space, and enhances the product yield and manufacturing stability. It has good practical value and promising prospects for promotion.

[0053] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0054] It should be understood that the terms "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation 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 module 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.

[0055] Furthermore, in the description of this utility model, "multiple" and "several" mean two or more, unless otherwise explicitly specified.

[0056] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A British standard plug, characterized in that, include: The inner frame has a first electrical plug and a cavity for installing a fuse tube. The top of the inner frame has a first terminal piece and a second terminal piece that extend into the cavity. The first terminal piece is electrically connected to the first electrical plug, and the extended end of the second terminal piece has a first wire clamp. A pressure cap, comprising a first cap body and a second cap body; The first cover is fitted onto the first terminal piece and the second terminal piece and welded together with the inner frame, while the second cover is fastened to the inner frame.

2. The UK standard plug according to claim 1, characterized in that, The inner frame is provided with a first groove and a second groove, the first terminal piece is snapped into the first groove, and the second terminal piece is snapped into the second groove; The first cover is provided with a first protrusion and a second protrusion; when the first cover is closed on the first terminal piece and the second terminal piece, the first protrusion is engaged in the first groove and abuts against the first terminal piece, and the second protrusion is engaged in the second groove and abuts against the second terminal piece.

3. The UK standard plug according to claim 2, characterized in that, The first groove is provided with a first notch and a first connecting hole communicating with the cavity; the first terminal piece is provided with a first bent piece electrically connected to one end of the fuse tube; When the first terminal piece is snapped into the first groove, the first bent piece extends into the cavity through the first connection hole, and one end of the first terminal piece extends out through the first notch and is electrically connected to the first electrical pin.

4. The UK standard plug according to claim 3, characterized in that, The second groove is provided with a second notch and a second connecting hole communicating with the cavity; the second terminal piece is provided with a second bent piece electrically connected to the other end of the fuse tube; When the second terminal piece is snapped into the second groove, the second bent piece passes through the second connecting hole and extends into the cavity, and one end of the second terminal piece extends out through the second notch to form the first wire clamp head.

5. The UK standard plug according to claim 4, characterized in that, The first groove is also provided with a first positioning post, and the first terminal piece is provided with a first positioning hole. When the first terminal piece is engaged in the first groove, the first positioning hole and the first positioning post are engaged and positioned. The second groove is also provided with a second positioning post, and the second terminal piece is provided with a second positioning hole. When the second terminal piece is engaged in the second groove, the second positioning hole and the second positioning post are engaged and positioned.

6. The UK standard plug according to claim 5, characterized in that, The first protrusion has a first positioning groove that engages with the first positioning post, and the second protrusion has a second positioning groove that engages with the second positioning post.

7. The UK standard plug according to claim 4, characterized in that, The first protrusion is further provided with a first protrusion that mates with the first notch, and the second protrusion is further provided with a second protrusion that mates with the second notch.

8. The UK standard plug according to claim 1, characterized in that, The inner frame is provided with a first fastening position, and the second cover is provided with a second fastening position corresponding to the position of the first fastening position. When the second cover is placed on the inner frame, the first fastening position and the second fastening position are fastened together.

9. The UK standard plug according to claim 8, characterized in that, The second cover has a through hole that mates with the first cover. When the second cover is fastened to the inner frame, the first cover is engaged in the through hole.

10. The UK standard plug according to claim 1, characterized in that, It also includes a second electrical pin and a third electrical pin, the second electrical pin being electrically connected to a third terminal piece, the third electrical pin being electrically connected to a fourth terminal piece, and the third terminal piece extending to its end having a corresponding second wire clamp, and the fourth terminal piece extending to its end having a corresponding third wire clamp.

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