High current power cord plug structure

Abstract

The utility model discloses a kind of high-current power cord plug structures, including electric wire, at least two interval parallelly arranged inserts, and riveting terminal, injection molding shell;The front end of the riveting terminal is fixed in the rear end of the insert by rivet, the rear end is crimped with the core wire of the electric wire;The injection molding shell is formed by injection molding process and is covered on the surface of the electric wire, insert and riveting terminal, and exposes the front end of the insert and electric wire.The utility model changes the assembly mode of traditional assembly type plug, after the electric wire and insert are assembled, injection molding shell is formed on surface as the body of plug using injection molding process, the surface of electric wire and insert can be tightly covered without gap, without worrying about internal conductor oxidation blackening and other problems, and the insert will not shake either;Meanwhile, the assembly procedure of the utility model is simpler, more efficient, and can reduce overall cost.

Description

Technical Field

[0001] This utility model belongs to the field of power cord plug technology, and specifically refers to a high-current power cord plug structure. Background Technology

[0002] A power cord plug is a device used to connect electrical appliances to a power outlet. It is usually located at the end of the power cord and its main function is to connect the appliance to the power grid, thereby providing power to the appliance.

[0003] Currently available 25A high-current power cord plugs are all detachable assembly types. Their internal structure uses screws to fix the connection between the plug and the conductor, and uses pressure plates and screws to fix the position of the wire. This type of structure has the following disadvantages:

[0004] (1) There is a possibility of stripped threads and insufficient tightening force when assembling and locking screws, which may lead to loosening or improper assembly;

[0005] (2) Because the opening of the wire in the casing is too large, it is generally difficult to keep the diameter of the wire completely consistent with the opening. In environments with high temperature and humidity, moisture, dust, impurities, etc. can easily enter the casing, causing the internal conductor connectors to oxidize and turn black or have a short circuit risk, which will reduce the service life of the power plug.

[0006] (3) The overall cost is relatively high. Utility Model Content

[0007] The main purpose of this utility model is to provide a high-current power cord plug structure to solve the problems existing in the prior art, making the plug structure more robust, stable and safe.

[0008] To achieve the above objectives, the solution of this utility model is:

[0009] A high-current power cord plug structure includes an electric wire, at least two spaced-apart prongs, a riveting terminal, and an injection-molded housing; the front end of the riveting terminal is fixed to the rear end of the prongs by a rivet, and the rear end of the terminal is crimped with the core wire of the electric wire; the injection-molded housing is formed by injection molding and covers the surfaces of the electric wire, prongs, and riveting terminal, and exposes the front end of the prongs and the electric wire.

[0010] The injection-molded housing includes an inner mold and an outer mold, wherein the hardness of the inner mold is higher than that of the outer mold.

[0011] Preferably, the inner mold is injection molded from PP material, and the outer mold is injection molded from PVC material.

[0012] The rear end of the insert is provided with a groove for the end of the riveting terminal to mate with. The shape of the groove matches the end of the riveting terminal, and both are respectively provided with a first through hole and a second through hole for the rivet to pass through.

[0013] The high-current power cord plug structure also includes a plug bracket covered by the injection-molded housing; each plug is inserted through the plug bracket.

[0014] Preferably, the insert bracket is provided with mounting holes for inserting the insert, the mounting holes are matched with the shape of the insert, and the mounting holes are arranged at equal intervals along the width direction of the plug.

[0015] Preferably, the insert bracket, rivets, and crimping terminals with the core wire are arranged sequentially along the length of the plug.

[0016] The number of inserts is designed to be three.

[0017] After adopting the above technical solution, the present invention has the following technical effects:

[0018] This invention changes the traditional assembly method of assembled plugs. After assembling the wires and prongs, an injection molding process is used to form the injection-molded shell on the surface as the plug body. This tightly covers the surface of the wires and prongs without leaving gaps, eliminating concerns about internal conductor oxidation and blackening, and preventing the prongs from wobbling. At the same time, the assembly process of this invention is simpler, more efficient, and reduces overall costs. The riveting terminals are stamped and riveted to the prongs, ensuring a tight fit between the prongs and the riveting terminals, fixing their position and direction, making them less susceptible to dragging and rotation, and ensuring a firm and reliable connection. Attached Figure Description

[0019] Figure 1 This is a perspective view of a specific embodiment of the present utility model.

[0020] Figure 2 This is a partial three-dimensional view of a specific embodiment of the present utility model.

[0021] Figure 3 This is a partial structural cross-sectional view of a specific embodiment of the present utility model.

[0022] Figure 4 This is a perspective view of the wires according to a specific embodiment of the present utility model.

[0023] Figure 5 This is a perspective view of a rivet according to a specific embodiment of the present utility model.

[0024] Figure 6 This is a front view of the riveting terminal according to a specific embodiment of the present utility model.

[0025] Figure 7 This is a front view of the insert in a specific embodiment of the present utility model.

[0026] Figure 8 This is a perspective view of the insert bracket according to a specific embodiment of the present utility model.

[0027] Figure 9 This is a schematic diagram of the assembly process of a specific embodiment of the present utility model. Figure 1 .

[0028] Figure 10 This is a schematic diagram of the assembly process of a specific embodiment of the present utility model. Figure 2 .

[0029] Figure 11 This is a schematic diagram of the assembly process of a specific embodiment of the present utility model. Figure 3 .

[0030] Explanation of icon numbers:

[0031] 1-Wire; 11-Core wire; 2-Plug; 21-Groove; 22-First through hole; 3-Rivet terminal; 31-Second through hole; 4-Injection molded housing; 41-Inner mold; 42-Outer mold; 5-Rivet; 6-Plug bracket; 61-Mounting hole. Detailed Implementation

[0032] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0033] refer to Figure 1-8 As shown, this utility model discloses a high-current power cord plug structure, including a power cord 1, at least two spaced and parallel inserts 2, a riveting terminal 3, and an injection-molded housing 4; the front end of the riveting terminal 3 is fixed to the rear end of the insert 2 by a rivet 5, and its rear end is crimped with the core wire 11 of the power cord 1; the injection-molded housing 4 is formed by injection molding and covers the surfaces of the power cord 1, the inserts 2, and the riveting terminal 3, and exposes the front end of the insert 2 and the power cord 1.

[0034] Through the above solution, this utility model changes the assembly method of traditional assembly plugs. After assembling the wire 1 and the plug 2, the injection molding process is used to form the injection-molded shell 4 on the surface as the body of the plug. This can tightly cover the surface of the wire 1 and the plug 2 without leaving gaps, eliminating concerns about internal conductor oxidation and blackening, and preventing the plug 2 from shaking. At the same time, the assembly process of this utility model is simpler, more efficient, and reduces the overall cost. The rivet 5 is used to stamp and rivet the rivet terminal 3 and the plug 2, so that the surfaces of the plug 2 and the rivet terminal 3 are tightly attached, which can fix the position and direction, making it less prone to being dragged and rotated, and ensuring firmness and reliability.

[0035] The following are specific embodiments of the present invention.

[0036] The aforementioned injection-molded housing includes an inner mold 41 and an outer mold 42. The hardness of the inner mold 41 is higher than that of the outer mold 42, meaning the inner mold 41 is relatively soft and the outer mold 42 is relatively hard. By injection molding the inner mold 41, the wire 1 and the parts requiring insulation are wrapped. Then, the outer mold 42 is injection molded again to provide double insulation and sealing for the wire 1 and the inner mold 41, providing a safer guarantee.

[0037] Furthermore, the inner mold 41 is injection molded from PP (polypropylene) material, and the outer mold 42 is injection molded from PVC (polyvinyl chloride) material.

[0038] The rear end of the aforementioned insert 2 is provided with a groove 21 for the end of the riveting terminal 3 to mate with. The shape of the groove 21 matches the end of the riveting terminal 3, and both are respectively provided with a first through hole 22 and a second through hole 31 for the rivet 5 to pass through. In this embodiment, the aforementioned groove 21 and the first through hole 22 are formed by stamping and punching, respectively.

[0039] This utility model also includes a insert bracket 6 covered by an injection-molded housing 4; each insert 2 is inserted through the insert bracket 6 to achieve relative fixation. After the press-fitted insert 2 is assembled by the insert bracket 6, the position of the insert 2 can be fixed, while ensuring that the distance between the insert 2 meets certain dimensional requirements.

[0040] Furthermore, the aforementioned insert bracket 6 is provided with mounting holes 61 for inserting insert 2. The mounting holes 61 match the shape of insert 2, and the mounting holes 61 are arranged at equal intervals along the width direction of the plug.

[0041] Meanwhile, the crimping points of the aforementioned insert bracket 6, rivet 5, and riveting terminal 3 with the core wire 11 are arranged sequentially along the length of the plug to facilitate assembly and avoid interference.

[0042] The aforementioned insert 2 is designed to have three pieces, with the longer one serving as the ground wire.

[0043] refer to Figure 9-11 As shown, the specific assembly process of this utility model can be as follows:

[0044] First, each core wire 11 and the plug 2 of the wire 1 are riveted / crimped to both ends of the riveting terminal 3 respectively; then, each plug 2 is passed through the mounting hole 61 of the plug bracket 6 in sequence so that the three plugs 2 are side by side; then, the inner mold 41 is pre-injected and the outer mold 42 is injection molded to obtain the finished product.

[0045] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A high-current power cord plug structure, characterized in that: The device includes an electrical wire, at least two spaced-apart inserts, a riveting terminal, and an injection-molded housing. The front end of the riveting terminal is fixed to the rear end of the insert by a rivet, and its rear end is crimped with the core wire of the electrical wire. The injection-molded housing is formed by injection molding and covers the surfaces of the electrical wire, inserts, and riveting terminal, with the front end of the insert and the electrical wire exposed.

2. The high-current power cord plug structure as described in claim 1, characterized in that: The injection-molded housing includes an inner mold and an outer mold, wherein the hardness of the inner mold is higher than that of the outer mold.

3. The high-current power cord plug structure as described in claim 2, characterized in that: The inner mold is injection molded from PP material, and the outer mold is injection molded from PVC material.

4. The high-current power cord plug structure as described in claim 1, characterized in that: The rear end of the insert is provided with a groove for the end of the riveting terminal to mate with. The shape of the groove matches the end of the riveting terminal, and both are respectively provided with a first through hole and a second through hole for the rivet to pass through.

5. The high-current power cord plug structure as described in claim 1, characterized in that: It also includes a insert bracket covered by the injection-molded housing; each insert is inserted through the insert bracket.

6. The high-current power cord plug structure as described in claim 5, characterized in that: The insert bracket is provided with mounting holes for inserting the insert. The mounting holes match the shape of the insert and are arranged at equal intervals along the width direction of the plug.

7. The high-current power cord plug structure as described in claim 5, characterized in that: The insert bracket, rivets, and crimping points of the rivet terminals and the core wires are arranged sequentially along the length of the plug.

8. The high-current power cord plug structure as described in claim 1, characterized in that: The number of inserts is designed to be three.

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