CN2321133Y

CN2321133Y - Improved three-pole plug

Info

Publication number: CN2321133Y
Application number: CN 97231231
Authority: CN
Inventors: 张永昌
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-12-18
Filing date: 1997-12-18
Publication date: 1999-05-26
Anticipated expiration: 2007-12-18

Abstract

The utility model relates to a plug, particularly a three-pole plug used under correspondingly stable current condition, and the three-pole plug is used in occasions that the welded contacts of conductive wires are easy to break or fall off. The utility model is mainly characterized in that a middle tube is arranged between a D-typed terminal and an outer tube, and insulation bodies are filled between the D-typed terminal and the middle tube. The insulation bodies are also filled between the middle tube and the outer tube, and the outer tube is also connected with an elastic piece. One end of the elastic piece is provided with a ring part, while the other end is provided with a pack of clamp pieces, and the elastic piece is sheathed on the outer tube by the ring part of the elastic piece. Therefore, the current is correspondingly stable, and the utility model can prevent the welded contacts of the conductive wires, the D-typed terminal, the middle tube, and the outer tube from breaking and falling off caused by pulling and tearing.

Description

The three-terminal polarized plus plug of improvement

The utility model relates to a kind of plug, especially refers to the three-terminal polarized plus plug that the comparatively stable and wire bonds contact easy fracture of requirement electric current or the occasion that comes off are used.

At present, common known DC plug, as shown in Figure 1, 2, a D type terminal 10a and an outer tube 11a that system is made by electric conductor are constituted, outer tube 11a is that spacer sleeve is located at outside the head D type terminal 10a, and is filled with insulator 12a between D type terminal 10a and outer tube 11a, makes D type terminal 10a and outer tube 11a form two utmost points and separates shape, in addition can a cock body 13a sealing fixed insulation body 12a rear end, infiltrate plug inside when preventing encapsulating.

Above-mentioned known DC plug is not washed in good time discharge owing to have, if when using the charger of mobile phone in automobile, electric current is unstable; Moreover D type terminal 10a and outer tube 11a rear end system are welded to connect lead, and the welded contact of this lead and D type terminal 10a and outer tube 11a ruptures, comes off because of pullling easily.

In view of this, the purpose of this utility model provides a kind of three-terminal polarized plus plug of improvement, borrows outer tube to be split into electric discharge device, and the adjustment electric current that can discharge is again with double team sheet double team lead and be difficult for disconnecting tightly.

The purpose of this utility model is achieved in that a kind of three-terminal polarized plus plug of improvement, comprise D type terminal, outer tube, it is characterized in that: middle pipe is set between D type terminal and outer tube, and filling insulator between D type terminal and the middle pipe, filling insulator between middle pipe and the outer tube also connects a shell fragment on the outer tube, an end of this shell fragment has a ring portion, and the other end has a double team sheet, and shell fragment is socketed on the outer tube with its ring portion.

Above-mentioned insulator rear end is provided with the cock body of a sealing.

Owing to adopt such scheme: make electric current comparatively stable, can prevent again that lead and D type terminal, middle pipe, outer tube welded contact from being pullled and rupture or come off.

Below in conjunction with drawings and Examples the utility model is further specified.

The stereogram of the known DC plug of Fig. 1;

The cutaway view of the known DC plug of Fig. 2;

Fig. 3 the utility model typical case example stereogram;

Fig. 4 the utility model exemplary embodiments cross-sectional schematic;

Fig. 5 the utility model exemplary embodiments is analysed and observe user mode figure.

Figure number: pipe 3. outer tubes 4. shell fragments 5. cock bodys 6. insulators 7. insulators 8. ring portions 9. double team sheets 10. leads 12. leads 13. shell 10a.D type terminal 11a. outer tube 12a. insulator 13a. cock bodys in the 1.D type terminal 2.

The D type terminal 1 that present embodiment is made by electric conductor, pipe 2 and one outer tube 3 constitutes in one, shown in Fig. 3-5, middle pipe 2 and outer tube 3 are that spacer sleeve is located at outside the D type terminal 1, and pipe 2 in D type terminal 1 reaches, 3 of outer tubes are filled with

insulator

6,7, make D type terminal 1, middle pipe 2 and outer tube 3 form three utmost points and separate shape, can a cock body 5 sealings be fixed on insulator 6 rear ends in addition, infiltrate plug inside when preventing encapsulating, outer tube 3 rear end are connected with a shell fragment 4, these shell fragment 4 one ends have a ring portion 8, the other end has a double team sheet 9, the ring portion 8 of shell fragment 4 is that build-in is connected outer tube 3 nearly rear end, make elasticity 4 and outer tube 3 affixed one, shell fragment 4 and the bent plug rear end (as shown in Figure 5) that is close to make double team sheet 9 be the plug rear end,

lead

10,11 and 12 is to be welded on D type terminal 1 respectively, middle pipe 2 and outer tube 3 rear end then can be carried out encapsulating, make the shell 13 that forms plug.

Present embodiment is mainly borrowed the setting of outer tube 3, to form an electric discharge device, connection lead 12 is discharged, and is particularly suited for using the charger of mobile phone in automobile, increases electric discharge device, and the adjustment electric current that can discharge makes electric current comparatively stable, and signal function increases; Moreover the double team sheet 9 of shell fragment 4 one ends can rupture, come off because of pullling to prevent

lead

10,11,12 and D type terminal 1, middle pipe 2, outer tube 3 welded contacts in order to

double team lead

10,11 and 12 tightly.

Claims

1, a kind of three-terminal polarized plus plug of improvement, comprise D type terminal (1), outer tube (3), it is characterized in that: between D type terminal (1) and outer tube (3), middle pipe (2) is set, and filling insulator (6) between D type terminal (1) and the middle pipe (2), filling insulator (7) between middle pipe (2) and the outer tube (3), also connect a shell fragment (4) on the outer tube (3), one end of this shell fragment (8) has a ring portion (8), and the other end has a double team sheet (9), and shell fragment (4) is socketed on the outer tube (3) with its ring portion (8).

2, by the three-terminal polarized plus plug of the described improvement of claim 1, it is characterized in that: above-mentioned insulator (6) rear end is provided with the cock body (5) of a sealing.