Plug terminal with section to be coated of insulating layer

Abstract

The invention relates to a plug terminal with a to-be-coated section of an insulating layer, which comprises a plug terminal, and the plug terminal sequentially defines a contact section which can be inserted into a socket, a to-be-coated section which is coated by the insulating layer, a clamped section which is clamped by an inner frame body and a riveting section which is used for riveting an electric wire, the clamp is characterized in that the clamped section is provided with a through hole, and the inner edge of the through hole partially extends into the range of the section to be coated. In addition, the through hole can be arranged inside and outside the outermost side face of the inner frame body in a striding mode in the future and can also be arranged inside and outside the'attachment face 'of the plug finished product in a striding mode after the plug finished product is molded, so that the rubber material can flow smoothly along the inner edge of the through hole and is completely wrapped without lack of rubber. Therefore, when a plug finished product is formed, product appearance flaws and safety specification doubts caused by lack of glue can be avoided.

Description

Technical Field

[0001] The present invention relates to an electrical connection element, in particular to an electrical plug terminal. Background Art

[0002] Currently, when manufacturing plugs, the plug terminals are designed to prevent the plug terminals from being inserted incompletely into the socket or becoming loose due to wear and tear over time, leaving a small protrusion between the plug and the socket. This could easily cause an electric shock due to accidental contact. To ensure the correct positioning of the plug and socket and to prevent the risk of electric shock even if a small protrusion between the two is exposed, the plug terminals are provided with a so-called "insulating layer" for both practicality and safety considerations.

[0003] like Figure 17 The plug terminal 4 shown in the figure defines a contact section 41 for plugging into a socket, a section to be covered with an insulating layer 42, a clamped section 43 for being clamped by an inner frame, and a riveted section 44 for riveting a wire. Figure 17 Displays the bare terminal that has not been fully processed. The boundaries of each section need to be determined through subsequent processing.

[0004] In terms of industry and process, the aforementioned plug manufacturing process typically involves placing the terminals into a mold for the inner frame to be formed, undergoing a first injection molding process to create the "inner frame" with the terminals. During this first injection molding process, the section to be covered with plastic is also coated with plastic to form the insulating layer. Then, in a second injection molding process, the inner frame with the terminals is placed into the desired plug mold to form the complete plug.

[0005] However, in prior art, when the terminal is placed into the mold of the inner frame to be formed and the first injection molding is performed to form the inner frame with the terminal, and the aforementioned section to be coated with the adhesive to form the insulating layer, when the injection pressure of the injection molding machine is too high, it often causes a defect commonly known in the industry as "glue overflow" (that is, excessive glue is injected, causing the glue to overflow the range originally set within the frame). The overflowed glue must be manually trimmed off, which is less economical. Alternatively, when the injection pressure of the injection molding machine is insufficient, it will cause a condition commonly known in the industry as "glue shortage" (that is, insufficient glue is injected, resulting in insufficient plastic to support the inner frame and forming a defective product). Because this inherent defect is difficult to remedy, it is easy to fail to meet safety regulations. Summary of the Invention

[0006] In view of the problems in the prior art, an object of the present invention is to provide a plug terminal having a section to be covered by an insulation layer.

[0007] The present invention provides a plug terminal having a section to be covered with an insulating layer, comprising a plug terminal, the plug terminal sequentially defining a contact section for insertion into a socket, a section to be covered with the insulating layer, a clamped section for being clamped by an internal frame, and a riveted section for riveting a wire. The plug terminal is characterized in that the clamped section is provided with a through-hole, and the inner edge of the through-hole partially extends into the section to be covered. In other words, the through-hole spans the clamped section and the section to be covered.

[0008] The perforation is circular, rectangular or elliptical.

[0009] The section to be coated is flat, and the wide and narrow sides of the flat section have concave edges.

[0010] In addition to being used as a grip for the insulation layer, the through hole also provides a supply of rubber material to be formed into the inner frame during the one-time injection molding of the insulation layer and the inner frame. In addition, because the clamped section is provided with a through hole, and the inner edge of the through hole partially extends into the range of the section to be covered, that is, the through hole spans the two ranges of the clamped section and the section to be covered, the through hole will also span the inner and outer sides of the outermost side of the inner frame in the future, and will also span the "engagement surface" of the finished plug after injection molding. The inner and outer surfaces of the through-holes are formed so that the rubber material can flow smoothly along the inner edge of the through-holes and completely cover the insulating layer without any glue shortage. Thus, the rubber material can first be used for the injection molding of the inner frame, and then the rubber material can flow to the inner edge of the through-holes to form a connection and further form the insulating layer. This process, because the rubber material flows smoothly, can avoid glue shortages during the molding of the finished plug, which may cause product appearance defects and safety compliance concerns. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional diagram of the terminal of the present invention.

[0012] Figure 2 It is a three-dimensional schematic diagram of another terminal according to an embodiment of the present invention.

[0013] Figure 3 It is a three-dimensional schematic diagram of another terminal according to an embodiment of the present invention.

[0014] Figure 4 It is a three-dimensional schematic diagram of the terminal matching assembly and the inner frame of the present invention.

[0015] Figure 5 It is a three-dimensional schematic diagram of the terminal matching assembly and the inner frame of the present invention.

[0016] Figure 6 It is a schematic diagram of a cross-section of the present invention.

[0017] Figure 7It is a three-dimensional schematic diagram of another terminal according to an embodiment of the present invention.

[0018] Figure 8 It is a three-dimensional schematic diagram of another terminal according to an embodiment of the present invention.

[0019] Figure 9 It is a plan view of an embodiment of the present invention.

[0020] Figure 10 It is a three-dimensional schematic diagram of the terminal matching assembly and the inner frame of the present invention.

[0021] Figure 11 It is a three-dimensional schematic diagram of the terminal matching assembly and the inner frame of the present invention.

[0022] Figure 12 It is another three-dimensional schematic diagram of a terminal of the present invention.

[0023] Figure 13 It is another three-dimensional schematic diagram of a terminal of the present invention.

[0024] Figure 14 It is another three-dimensional schematic diagram of a terminal of the present invention.

[0025] Figure 15 It is another three-dimensional schematic diagram of a terminal of the present invention.

[0026] Figure 16 It is another three-dimensional schematic diagram of a terminal of the present invention.

[0027] Figure 17 This is a three-dimensional diagram of the terminal of the prior art.

[0028] Explanation of the reference numerals: 1-plug terminal; 1A-plug terminal; 1B-plug terminal; 1C-plug terminal; 1D-plug terminal; 1E-plug terminal; 11-contact section; 12-section to be covered; 121-perforation; 122-recessed edge; 13-clamped section; 131-positioning hole; 14-riveted section; 2-inner frame; 20-outermost side; 3-insulating layer; 4-plug terminal; 41-contact section; 42-section to be covered; 43-clamped section; 44-riveted section. DETAILED DESCRIPTION

[0029] The following describes the structure, features and embodiments of the present invention with reference to the accompanying drawings to facilitate a further understanding of the present invention.

[0030] See also Figure 1 As shown, the present invention relates to a plug terminal with an insulating layer to be covered, comprising a plug terminal 1, the plug terminal 1 sequentially defining a contact section 11 for plugging into a socket, an insulating layer 3 (matching Figure 6 The to-be-coated section 12 is coated with an inner frame 2 (cooperating with Figure 4 、 Figure 5 The present invention comprises a clamped section 13 and a riveting section 14 for riveting the wire. The characteristic of the present invention is that the clamped section 13 is provided with a through-hole 121, and the inner edge of the through-hole 121 partially extends into the area of ​​the section to be covered 12. In other words, the through-hole 121 spans the area of ​​the clamped section 13 and the section to be covered 12.

[0031] The through hole 121 may be circular (eg Figure 2 As shown), rectangle, ellipse (as Figure 1 As shown) or other shapes to meet the shape of the terminal and its manufacturing process requirements, and the length of the through hole 121 in the section to be coated 12 can be slightly longer or shorter without being restricted.

[0032] On the other hand, the through hole 121 can not only serve as a grip for the insulation layer 3 to be covered, but also, when the insulation layer 3 and the inner frame 2 are injection molded at one time, the rubber material to be formed into the inner frame is not only supplied to the molding of the inner frame, but also because the clamped section 13 is provided with a through hole 121, and the inner edge of the through hole 121 partially extends into the range of the section to be covered 12. That is, the through hole 121 is set across the two ranges of the clamped section 13 and the section to be covered 12. This will also make the through hole 121 later span the inside and outside of the outermost side surface 20 of the inner frame 2 (such as Figure 6 As shown), it will also be placed across the "fitting surface" of the finished plug after injection molding (molding).

[0033] (engagement face) inside and outside.

[0034] Therefore, the rubber material can first be used for the injection molding of the inner frame 2, and then the rubber material can flow to the inner edge of the through-hole 121 to form a connection. The rubber material can flow smoothly along the inner edge of the through-hole 121 to completely cover the entire structure without any gaps in the rubber material, and further form the insulating layer 3. Since the rubber material flows smoothly during this process, it can avoid the appearance defects of the product and the concerns about safety regulations caused by the lack of rubber material during the molding of the finished plug.

[0035] See also Figure 1 As shown in the preferred embodiment of the present invention, the clamped section 13 can be provided with a positioning hole 131, which provides a better grip and stability to the plastic material required for forming the "inner frame" with the terminal, thereby forming a better positioning function. The selective arrangement of the positioning hole 131 is not limited, such as Figure 3 Not set.

[0036] like Figure 7 Cooperate Figure 9As shown, in a preferred embodiment of the present invention, the section to be coated 12 is flat, with recessed edges 122 on both the wide and narrow sides. Because the injection molding machine must have sufficient space for the rubber to flow freely within a relatively short time to prevent glue shortages, the present invention provides ample space for the rubber to flow freely, preventing stagnation and glue shortages. This can even prevent glue shortages during the molding of the finished plug, which could cause product appearance defects and safety compliance concerns.

[0037] See also Figure 8 FIG. 1 is another embodiment of the present invention, in which the section to be coated 12 is also flat, and the wide and narrow sides of the flat section have recessed edges 122, so that the injection molding machine has enough space to provide the discharge and smoothness of the rubber material in a relatively short time to avoid the problem of lack of rubber.

[0038] See also Figure 12 FIG. 1 shows another type of plug terminal 1A of the present invention.

[0039] See also Figure 13 FIG. 1 shows another type of plug terminal 1B of the present invention.

[0040] See also Figure 14 FIG. 1 shows another type of plug terminal 1C of the present invention.

[0041] See also Figure 15 FIG. 1 shows another type of plug terminal 1D of the present invention.

[0042] See also Figure 16 FIG. 1 shows another type of plug terminal 1E of the present invention.

[0043] The above description is a preferred embodiment of the present invention. All equivalent changes made according to the present invention fall within the scope of the subject matter of the present invention.

Claims

1. A plug terminal having a section to be covered by an insulating layer, comprising a plug terminal, the plug terminal sequentially defining a contact section for being plugged into a socket, a section to be covered by an insulating layer, a clamped section for being clamped by an inner frame, and a riveted section for riveting an electric wire, characterized in that: The clamped section is provided with a through hole, and the inner edge of the through hole partially extends into the range of the section to be covered.

2. The plug terminal having a section to be covered by an insulating layer according to claim 1, characterized in that: The perforation is circular.

3. The plug terminal having a section to be covered by an insulating layer according to claim 1, characterized in that: The perforation is rectangular.

4. The plug terminal having a section to be covered by an insulating layer according to claim 1, characterized in that: The perforation is oval in shape.

5. The plug terminal having a section to be covered by an insulating layer according to claim 1, characterized in that: The section to be coated is flat, and the flat wide surface and the flat narrow surface have concave edges.

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