A power plug with mistaken plugging prevention structure

Abstract

The utility model provides a power plug with prevent mistaken installation structure relates to electrical component technical field, including plug shell and wiring terminal setting in the plug shell inside, wiring terminal at least includes fire line pin and zero line pin, the plug shell is provided with the installation groove for wiring terminal installation, wiring terminal respectively has the physical prevent stupid structure that is not same each other, so that each wiring terminal can only install in the installation groove that is only matched with structure in the plug shell inside the preset, the utility model discloses beneficial is, through the combination application of copper particle width, the convex point and the prevent stupid baffle and so on various physical prevent stupid structure, avoids the possibility of fire line, zero line, ground wire wiring terminal between wrong installation, reverse installation from structure, helps to promote production efficiency, reduces the mistaken installation rate of plug, reduces the reject rate and rework cost, helps to guarantee the qualified rate of product.

Description

Technical Field

[0001] This utility model relates to the field of electrical component technology, and in particular to a power plug with an anti-misinstallation structure. Background Technology

[0002] In the field of electrical connections, wire-connectable power plugs are widely used due to their flexibility and replaceability. However, most such plugs on the market currently lack effective anti-misconnection designs on the neutral, live, and ground terminals. These terminals (also known as pins or copper contacts) look similar and are difficult for users to distinguish accurately with the naked eye.

[0003] For ordinary users unfamiliar with electrical wiring principles, it is extremely easy to incorrectly connect the neutral, live, and ground wires to the wrong terminals during installation. Such wiring errors can lead to serious safety hazards: reversing the ground wire from the neutral or live wire can cause the circuit to fail to supply power properly, or even cause equipment malfunction or short circuit risks. Reversing the neutral and live wires can also cause switch control failure, abnormally electrified equipment casings, and thus pose a threat of electric shock to users; furthermore, it can cause functional failure or damage to precision electrical equipment that relies on precise current direction.

[0004] Therefore, there are certain technical defects in the existing technology. How can we provide a power plug structure that can fundamentally prevent users from incorrectly installing different prongs, so as to eliminate various safety problems caused by incorrect wiring? Utility Model Content

[0005] This invention overcomes the shortcomings of the prior art and provides a power plug with an anti-misinstallation structure, which helps to improve production efficiency, reduce scrap rate and rework cost, and ensure product qualification rate.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] A power plug with an anti-misinstallation structure includes a plug housing and terminals disposed inside the plug housing. The terminals include at least a live wire pin and a neutral wire pin. The plug housing is provided with mounting slots for installing the terminals. Each terminal has a different physical anti-misfit structure, so that each terminal can only be installed in a pre-set mounting slot inside the plug housing that uniquely matches its structure.

[0008] Furthermore, the terminal block also includes a ground wire pin; the live wire pin includes a first copper dot and a first metal plate connected thereto; the neutral wire pin includes a second copper dot and a second metal plate connected thereto; the ground wire pin includes a third copper dot and a third metal plate connected thereto; the physical anti-foolproof structure includes: the width of the third copper dot is greater than the width of the second copper dot and the second copper dot.

[0009] Furthermore, the width of the third copper particle is 6.5 mm, and the width of the second and third copper particles is 6 mm.

[0010] Furthermore, the physical anti-mistake structure also includes: a third anti-mistake baffle is provided on both sides of the mounting groove corresponding to the grounding pin, and the distance between the two third anti-mistake baffles matches the width of the third hardware sheet.

[0011] Furthermore, the physical anti-foolproof structure also includes: the first metal sheet is provided with a first protrusion, and the second metal sheet is provided with a second protrusion; in the assembled state, the first protrusion and the second protrusion face different directions;

[0012] A first anti-foolproof baffle is provided next to the mounting slot corresponding to the live wire pin. The first anti-foolproof baffle is located on the side away from the first protrusion and is higher than the lower end surface of the first protrusion.

[0013] A second foolproof baffle is provided next to the mounting slot corresponding to the neutral wire pin. The second foolproof baffle is located on the side away from the second protrusion and is higher than the lower end face of the second protrusion.

[0014] Furthermore, the upper surface of the mounting groove for installing the live wire and neutral wire pins is horizontal, and the lower end surfaces of the first and second protrusions are horizontal.

[0015] Furthermore, it also includes a wire clamp, which is detachably connected to the plug housing for pressing and fixing the power cord; the wire clamp has a first concave structure and a second concave structure on opposite sides, the first concave structure and the second concave structure having different radii of curvature to accommodate and press power cords of different diameters.

[0016] Furthermore, the surfaces of the first concave structure and the second concave structure are provided with anti-slip serrations.

[0017] Furthermore, the first, second, and third anti-mistake baffles are integrally injection molded with the plug housing.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This invention utilizes a combination of physical anti-misfit structures, such as copper particle width, raised dots, and anti-misfit baffles, to structurally prevent the possibility of incorrect or reversed installation of the live, neutral, and ground wire terminals. This helps improve production efficiency, reduce the misinstallation rate of plugs, lower the scrap rate and rework costs, and help ensure the product qualification rate. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and, together with the embodiments of the present invention, are used to explain the present invention. They do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the internal structure of the power plug. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the internal structure of the power plug. Figure 2 ;

[0023] Figure 3 This is an exploded view of the internal structure of a power plug;

[0024] Figure 4 This is a structural diagram of the power plug viewed from the bottom.

[0025] Figure 5 This is a schematic diagram showing the wire clamp and the plug housing in a separated state;

[0026] Figure 6 This is a schematic diagram of another embodiment of the power plug.

[0027] In the diagram: 1. Plug housing; 2. Live wire pin; 201. First copper bead; 202. First metal plate; 2021. First protrusion; 3. Neutral wire pin; 301. Second copper bead; 302. Second metal plate; 3021. Second protrusion; 4. Mounting groove; 5. Ground wire pin; 501. Third copper bead; 502. Third metal plate; 6. Third foolproof baffle; 7. First foolproof baffle; 8. Second foolproof baffle; 9. Wire clamp; 901. First concave structure; 902. Second concave structure. Detailed Implementation

[0028] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0029] like Figures 1 to 5As shown, this utility model claims protection for a power plug with an anti-misinstallation structure. The power plug is a three-phase plug including a plug housing 1 and terminals disposed inside the plug housing 1. Specifically, the terminals include a live wire pin 2, a neutral wire pin 3, and a ground wire pin 5. The live wire pin 2 is composed of a first copper bead 201 and a first metal plate 202 connected thereto; the neutral wire pin 3 is composed of a second copper bead 301 and a second metal plate 302 connected thereto; and the ground wire pin 5 is composed of a third copper bead 501 and a third metal plate 502 connected thereto. The plug housing 1 has mounting slots 4 inside for installing these three terminals. To prevent misinstallation, each terminal has a different physical anti-misinstallation structure, ensuring that each terminal can only be installed into a pre-set, uniquely matched mounting slot 4.

[0030] The specific foolproof structure includes the following: the width of the third copper nugget 501 of the ground wire pin 5 is designed to be greater than the width of the first copper nugget 201 of the live wire pin 2 and the second copper nugget 301 of the neutral wire pin 3. In a specific embodiment, the width of the third copper nugget 501 is 6.5 mm, while the widths of the first copper nugget 201 and the second copper nugget 301 are both 6.0 mm. Correspondingly, the inlet width of the mounting slot 4 accommodating the third copper nugget 501 is also greater than the other two, thus the ground wire pin 5 cannot be placed into the other two mounting slots 4, and the live wire pin 2 and neutral wire pin 3 will be loose and improperly matched when placed into the mounting slot 4 of the ground wire pin 5. Furthermore, a third foolproof baffle 6 is provided on both sides of the mounting slot 4 corresponding to the ground wire pin 5. Furthermore, the height of the third anti-foolproof baffle 6 is set to be higher than the lower end face of the first protrusion 2021 and higher than the lower end face of the second protrusion 3021. Therefore, only the third hardware piece 502, which has no protrusions on both sides, can be inserted into this gap and inserted to the bottom. The first hardware piece 202 and the second hardware piece 302, which have the first protrusion 2021 and the second protrusion 3021 respectively, cannot be smoothly inserted and stably installed.

[0031] Additionally, a first protrusion 2021 is stamped onto the first metal sheet 202, and a second protrusion 3021 is stamped onto the second metal sheet 302. For example... Figures 1 to 3 As shown, in the correct assembly state, the orientations of the first protrusion 2021 and the second protrusion 3021 are different. For example, the first protrusion 2021 faces to the left, while the second protrusion 3021 faces to the right.

[0032] Correspondingly, a first foolproof baffle 7 is provided next to the mounting slot 4 for installing the live wire pin 2. The first foolproof baffle 7 is located on the side away from the first protrusion 2021, and its height is higher than the lower end face of the first protrusion 2021. If an attempt is made to install the live wire pin 2 in reverse, the first protrusion 2021 will be blocked by the first foolproof baffle 7 and cannot be installed in place.

[0033] Similarly, a second anti-misoperation baffle 8 is provided next to the mounting slot 4 for installing the neutral wire pin 3. This second anti-misoperation baffle 8 is located on the side away from the second protrusion 3021, and its height is higher than the lower end face of the second protrusion 3021. This effectively prevents the neutral wire pin 3 from being installed backwards.

[0034] Finally, the upper surface of the mounting groove 4, used to install the live wire pin 2 and the neutral wire pin 3, is horizontal. Simultaneously, the lower surfaces of the first protrusion 2021 and the second protrusion 3021 are also horizontal. This ensures that, when correctly installed, the lower surfaces of the protrusions fit snugly against the mounting groove 4, resulting in good stability.

[0035] The plug also includes a cable clip 9, which is detachably connected to the tail of the plug housing 1 by screws for clamping and securing the power cord. The cable clip 9 has a first concave structure 901 and a second concave structure 902 on opposite sides, with different radii of curvature to accommodate and clamp power cords of different diameters or specifications, improving versatility and cable securing reliability. To further enhance the securing effect, the surfaces of the first concave structure 901 and the second concave structure 902 can be provided with anti-slip serrations.

[0036] The first anti-mistake plate 7, the second anti-mistake plate 8, and the third anti-mistake plate 6 are all integrally molded with the plug housing 1 through injection molding, resulting in a robust structure, low production cost, and avoidance of additional assembly processes.

[0037] like Figure 6 As shown, based on the same inventive concept as Embodiment 1, this embodiment provides a two-phase power plug containing only a live wire and a neutral wire. Specifically, the two-phase plug also includes a plug housing 1, and a live wire pin 2 and a neutral wire pin 3 disposed inside. Two mounting slots 4 are provided inside the plug housing 1. Its anti-misinstallation structure can adopt the dimensional difference structure scheme described above. With this structure, the live wire pin and the neutral wire pin cannot be installed in the wrong position. In addition, the two-phase plug can also be equipped with a wire clip 9 with a double concave structure, the same as in the above embodiment, to optimize cable fixing.

[0038] This invention utilizes a combination of physical anti-misfit structures, such as copper particle width, raised dots, and anti-misfit baffles, to structurally prevent the possibility of incorrect or reversed installation of the live, neutral, and ground wire terminals. This helps improve production efficiency, reduce the misinstallation rate of plugs, lower the scrap rate and rework costs, and help ensure the product qualification rate.

[0039] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A power plug with an anti-misinstallation structure, characterized in that, The device includes a plug housing (1) and wiring terminals disposed inside the plug housing (1). The wiring terminals include at least a live wire pin (2) and a neutral wire pin (3). The plug housing (1) is provided with a mounting slot (4) for mounting the wiring terminals. Each wiring terminal has a different physical foolproof structure, so that each wiring terminal can only be installed in the mounting slot (4) that is pre-set inside the plug housing (1) and uniquely matches its structure.

2. The power plug with an anti-misinstallation structure according to claim 1, characterized in that, The terminal block also includes a ground wire pin (5); the live wire pin (2) includes a first copper dot (201) and a first metal plate (202) connected thereto; The neutral pin (3) includes a second copper particle (301) and a second metal plate (302) connected thereto; the ground pin (5) includes a third copper particle (501) and a third metal plate (502) connected thereto; the physical anti-mistake structure includes: the width of the third copper particle (501) is greater than the width of the second copper particle (301) and the second copper particle (301).

3. The power plug with an anti-misinstallation structure according to claim 2, characterized in that: The width of the third copper particle (501) is 6.5 mm, and the width of the second copper particle (301) and the second copper particle (301) is 6 mm.

4. The power plug with an anti-misinstallation structure according to claim 2, characterized in that, The physical anti-mistake structure further includes: a third anti-mistake baffle (6) is provided on both sides of the mounting groove (4) corresponding to the grounding pin (5), and the distance between the two sides of the third anti-mistake baffle (6) matches the width of the third hardware sheet (502).

5. The power plug with an anti-misinstallation structure according to claim 4, characterized in that, The physical anti-fouling structure further includes: the first hardware sheet (202) is provided with a first protrusion (2021), and the second hardware sheet (302) is provided with a second protrusion (3021); in the assembled state, the first protrusion (2021) and the second protrusion (3021) face different directions; A first anti-foolproof baffle (7) is provided next to the mounting slot (4) corresponding to the mounting of the live wire pin (2). The first anti-foolproof baffle (7) is located on the side away from the first protrusion (2021) and is higher than the lower end face of the first protrusion (2021). A second anti-foolproof baffle (8) is provided next to the mounting slot (4) corresponding to the installation of the neutral wire plug (3). The second anti-foolproof baffle (8) is located on the side away from the second protrusion (3021) and is higher than the lower end face of the second protrusion (3021).

6. The power plug with an anti-misinstallation structure according to claim 5, characterized in that, The upper surface of the mounting groove (4) for mounting the live wire pin (2) and the neutral wire pin (3) is horizontal, and the lower surfaces of the first protrusion (2021) and the second protrusion (3021) are horizontal.

7. The power plug with an anti-misinstallation structure according to claim 1, characterized in that, It also includes a wire clamp (9), which is detachably connected to the plug housing (1) for pressing and fixing the power cord; the wire clamp (9) has a first concave structure (901) and a second concave structure (902) on opposite sides, and the first concave structure (901) and the second concave structure (902) have different radii of curvature to accommodate and press power cords of different diameters.

8. The power plug with an anti-misinstallation structure according to claim 7, characterized in that, The surfaces of the first concave structure (901) and the second concave structure (902) are provided with anti-slip serrations.

9. The power plug with an anti-misinstallation structure according to claim 5, characterized in that, The first anti-foolproof baffle (7), the second anti-foolproof baffle (8), the third anti-foolproof baffle (6) and the plug housing (1) are integrally injection molded structures.

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