CN201075569Y - Torsion type plug inner frame structure - Google Patents

Abstract

The utility model relates to a torsional type plug inner frame structure, including two at least torsional type's terminal, each terminal is defined as a conducting strip, a torsion section, flange section and one according to the preface after by preceding to put the line seat, the utility model discloses include a support body again, be equipped with the perforation that corresponding terminal wore to establish, each perforation form before, two less cross-sections of back and the first space section and the second space section of great cross-section, so that the torsion section of terminal unevenness can put into great second space section, and make the flange section support the dorsal part at the support body, can restrict the length that exposes of terminal and accord with the safety standard.

Description

Twisted plug inner frame structure

technical field

The utility model relates to a plug structure, in particular to a twisted plug structure.

Background technique

In general daily life and industrial operation, the use of electrical appliances or electrical appliances, the source of AC power is mainly through the use of a wire plug to connect with a socket, and conduct current to the electrical appliances or electrical appliances.

The production method of general wire plugs is mainly to put a terminal through the wire setting operation (also called crimping or riveting, that is, the operation of combining the core wire of the wire with the terminal), and then put the completed semi-finished product into a frame, and An inner frame is formed. Then put the inner frame into the mold of the plug shell for integral injection molding.

Then, based on the requirement of automatic wire setting operation, the industry has developed a twist-type terminal. In the twist-type terminal, the terminal is first twisted by 90o so that the conductive strips of the terminal are in two upright parallel states, and then Then, the twisted terminal is formed into an inner frame with a frame body (the frame body is produced by injection molding) through injection molding. Since the terminal has been twisted before, the wire holder at the rear end of the terminal can form a U-shaped groove with an upward opening as a state for receiving the core wire, so as to facilitate continuous and automated production line operations, and then put it into the mold and inject it into a plug.

And this kind of internal frame with the described twisted terminal and the frame body injection-molded, its problem is:

1. Generally speaking, the torsion quality of the terminal is not easy to control, and the existing technology cannot accurately twist the terminal to the correct angle required, so that when the torsion type terminal is put into the mold for injection molding, the mold is often due to the The twisted terminal does not correspond well, and the mold is damaged due to the relative interference of the offset part of the twisted terminal, which seriously affects the production efficiency. After the inner frame of a good product is formed, due to the obstruction of defects, the wire placement operation is not easy to complete, resulting in the so-called "exposed copper phenomenon" (that is, the wire placement cannot be completed completely and smoothly, but the core wire is exposed), which affects power consumption. Safety.

2. In addition, due to the background technology of injection molding the terminal and the frame body, after injection molding, the frame body formed by molten plastic material shrinks at different rates due to cooling of each part. As far as the impact is concerned, it often leads to the fact that after the frame is dried, the two corresponding twisted terminals cannot be completely parallel, and because the angle of deviation from each other is too large, there will be a flare or gap between the two terminals produced in the future. It is a phenomenon of internal clamping, and the angle of deviation often exceeds the safety regulations of many countries in the world (the safety regulations mentioned are related to the tightness of the terminals of the plug and the jack of the socket, which directly affects its conductivity). , resulting in serious flaws in quality.

Contents of the invention

In view of the problems in the background technology, the main purpose of the designer of this utility model is to provide a twisted plug inner frame structure, which makes it easy to process, improves the pass rate, and enhances the safety of use.

For realizing above-mentioned object, the technical scheme that the utility model adopts is:

A twist-type plug inner frame structure, characterized in that it includes at least two twist-type terminals, and each terminal is sequentially defined as a conductive piece, a twist section, a flange section and a wire seat from front to back; it also includes A frame body is provided with perforations corresponding to the terminals. The perforations form the first space section and the second space section with a smaller cross-section and a larger cross-section in the front and rear. The uneven twist of the terminals segment into the second space segment.

Compared with the prior art, the utility model adopting the above-mentioned technical solution has the advantages of:

1. The frame body of the utility model is provided with perforations corresponding to the terminals, so that the frame body can allow the terminals to be "inserted" and their combination, and it is not necessary to make the inner frame with the frame body by injection molding the terminals. Therefore, the stability of the inner frame can be controlled by using a simple insertion type. And avoid the various variables produced in the injection molding process, which will affect the yield of the product.

2. Due to the frame body of the present utility model, its perforation can form the first space segment and the second space segment of the front and rear two smaller cross-sections and larger cross-sections, because the second space segment can just provide the The torsion section of the terminal is inserted (due to the irregularity and instability of the torsion section), so that the terminal of the present utility model has a follow-up stability in terms of appearance and wiring operation.

3. Moreover, since the second space section provides the terminal twist section to be inserted, the flange section of the terminal will abut against the back side of the frame body, which can limit the exposed length of the terminal and meet safety regulations.

Description of drawings

Fig. 1 is a perspective view of the combination of the frame body and the twist-type terminal of the present invention in the back view direction;

Fig. 2 is a perspective view of the combination of the frame body and the twist-type terminal of the present invention in the front view direction;

Fig. 3 is a plane sectional view of the combination of the frame body and the twist-type terminal of the present invention;

Fig. 4 is a perspective view of a frame of the present utility model;

Fig. 5 is A-A sectional view of Fig. 4;

Fig. 6 is a perspective view of a frame body of another embodiment of the present invention;

Fig. 7 is the B-B sectional view of Fig. 6;

Fig. 8 is a perspective view of another embodiment of the utility model combining the frame body with the semi-insulated twist-type terminal;

Fig. 9 is another perspective view of the combination of the frame body and the semi-insulated twist-type terminal according to another embodiment of the present invention;

Fig. 10 is a plane cross-sectional view of another embodiment of the utility model combining a frame body and a semi-insulated twist-type terminal.

Description of reference signs: 1-terminal; 1A-terminal; 11-conductive piece; 12-torsion section; 13-flange section; 14-wire holder; 141-U-shaped groove; 2A-frame body; 21-perforation; 211-first space segment; 212-second space segment; 23-convex body; 23A-convex body.

Detailed ways

The content, characteristics and embodiments of the utility model are described below by using drawings, so that your examiners can have a better understanding of the utility model.

Please refer to Fig. 1 and Fig. 2, the three-dimensional combined state is presented by the forward and reverse directions of the utility model respectively. The inner frame structure of the twisted plug of the utility model includes:

Two terminals 1: It can also include a grounding terminal not shown in the figure so that it has three terminals 1. As can be seen from FIG. 3, each terminal 1 is sequentially defined as a conductive piece 11 and a twisted section 12 from front to back , a flange segment 13 and a wire seat 14. As for the formation of the twisted section 12, it is twisted 90° at the rear end of the conductive sheet 11, so that the conductive sheet 11 of the terminal 1 is located in two upright and parallel states, and the wire seat 14 can be formed A U-shaped groove 141 with an upward opening serves as a state for receiving the core wire, so as to facilitate continuous and automated production line operations. Then, the twisted terminal 1 and frame body 2 are put into a mold and injection-molded to form a plug.

A frame body 2: Please refer to FIG. 4, as shown in FIG. 5, there are two or three through-holes 21 corresponding to the terminals 1, and each of the through-holes 21 forms two smaller cross-sections and a larger cross-section at the front and rear. The section of the first space section 211 and the second space section 212, so as to provide that the uneven twist section 12 of the terminal 1 can be placed into the larger second space section 212, and make the flange section 13 abut against The back side of the frame body 2 can limit the exposed length of the terminal 1 to comply with safety regulations.

Moreover, the front end of the frame body 2 of the present invention is provided with a protruding body 23 on the root periphery of the conductive sheet 11 to stabilize the terminal 1 and avoid its deflection. Alternatively, as shown in FIG. 6 and FIG. 7 , a protrusion 23A is provided on the front end of the frame body 2A at the periphery of the root of the conductive sheet 11 to stabilize the terminal 1 and avoid its deflection.

Please refer to Fig. 8 to Fig. 10, the combination type of the frame body 2 and the terminal 1A of the present invention, that is, a twisted terminal, its embodiment can also adopt the terminal 1A with an insulating layer 15, the insulating layer 15 It is also a safety protection that meets safety standards and avoids electric shock.

The above description is only illustrative, rather than restrictive, of the present utility model. Those of ordinary skill in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined in the claims. But all will fall within the limitable scope of the claims of the present utility model.

Claims (4)

1. A twist-type plug inner frame structure, characterized in that: it includes at least two twist-type terminals, and each terminal is sequentially defined as a conductive piece, a twist section, a flange section and a wire seat from front to back; It also includes a frame body, which is provided with perforations corresponding to the terminals. The perforations form the first space section and the second space section of the front and rear two smaller and larger sections. The terminals are not flat. The torsion segment is put into the second space segment. 2. The twist-type plug inner frame structure according to claim 1, characterized in that the flange segment is against the back side of the frame body. 3 . The inner frame structure of the twisted plug according to claim 1 , wherein the front end of the frame body is provided with a convex body at the periphery of the root of the conductive piece. 4 . 4. The inner frame structure of the twist-type plug according to claim 1, wherein a convex body is provided on the front surface of the frame body at the periphery of the root of the conductive sheet.

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