CN202308441U

CN202308441U - Cage direct current power plug

Info

Publication number: CN202308441U
Application number: CN2011204275927U
Authority: CN
Inventors: 郑永胜; 蒋国平; 吴健南
Original assignee: LIBAOJIA ELECTRICAL (SHENZHEN) CO LTD
Current assignee: LIBAOJIA ELECTRICAL (SHENZHEN) CO LTD
Priority date: 2011-11-02
Filing date: 2011-11-02
Publication date: 2012-07-04
Anticipated expiration: 2021-11-02

Abstract

The utility model relates to a cage direct current power plug, which comprises an outer electrode tube (10) and an inner electrode (20) accommodated in the outer electrode tube (10), and is characterized in that: engineering plastics (30) are arranged between the outer electrode tube (10) and the inner electrode (20) and allow the outer electrode tube (10) and the inner electrode (20) to be insulated from each other and integrally fixed, and the inner electrode (20) is formed by stamping a highly elastic metal sheet; at least two through grooves (22) in parallel with a central axis are arranged on the pipe wall of a tubular front section (21) matched with a central contact pin of a corresponding socket, so that the tubular front section (21) is in a cage shape; and the central contact pin of the socket adapted to the power plug is inserted into a 'cage' of the front section (21) of the inner electrode (20), and is in close surface contact with the pipe wall in the middle of the front section (21). The cage direct current power plug provided by the utility model has the beneficial effects that: the central contact pin of the socket is tightly clamped in the 'cage' by the elastic cage inner electrode of the plug so as to avoid the open circuit phenomenon in use; and meanwhile, the outer diameter of the plug can be as small as about 2mm.

Description

The cage modle dc power plug

Technical fieldThe utility model relates to the conductive attachment device, and relating in particular to the overall structure is the two-member connecting device of characteristic, particularly relates to the DC plug that is used to patch low-voltage dc power supply.

Background technologyElectrode and external electrode pipe in the prior art dc power plug comprises, the part that said interior electrode is embedded in the external electrode pipe is the column cavity body structure; Injection inside and outside electrode mutual insulating of molten plastic and fixing are one in the electrode tube outside; Adaptive with it supply socket center contact pin inserts in the column cavity of electrode tube in this just, face contact each other.Because of said center contact pin and interior electrode tube all are that the rigidity material is processed, if both fit dimensions are improper, or rotation, swing and vibrations are arranged when using, will cause loose contact, produce the problem that moment opens circuit.

The tuning-fork-type dc power plug of inventor's design (the practical new patent of separate case application); Electrode is the electrode slice that adopts the tuning fork-like that the punching press of high resiliency metal sheet processes in it; The center contact pin of socket inserts between the two fork pin of electrode in this just, makes the two tight contact; This tuning-fork type dc power plug has solved effectively and has been prone to the problem that generation moment opens circuit in the prior art tubulose between the electrode and socket center contact pin; But, when the center of said socket contact pin is very thin, certainly will also have too small and the problem that contact resistance is too big of the interior electrode contact surface of itself and said tuning-fork type.

The utility model contentThe technical problem that the utility model will solve is to avoid the weak point of above-mentioned prior art and designs and produce a kind of cage modle dc power plug, solves the interior electrode tube of prior art dc power plug and the center contact pin of respective socket and is prone to the problem that loose contact is opened circuit.

The utility model is to solve the problems of the technologies described above the technical scheme that proposes to be; A kind of cage modle dc power plug comprises external electrode pipe and the interior electrode that is enclosed within this its, has between the two to make insulated from each other and fixing is the working of plastics of one; Especially; The interior electrode that adopts the punching press of high resiliency metal sheet to process, it is provided with the tubulose leading portion tube wall that the center contact pin of respective socket cooperates and is no less than 2 grooves parallel with the axis, makes this tubulose leading portion be cage type; Insert in the leading portion it " cage " of said interior electrode with the adaptive socket center contact pin of this attaching plug, contact with the tight face of tube wall at this leading portion middle part.

The interior diameter d of said tubulose leading portion middle is the minimum interior diameter of this leading portion; This minimum diameter is less than the overall diameter of said socket center contact pin.

In the rear end of said dc power plug, in the gap between said interior electrode and the working of plastics, be plugged with the elasticity plug adaptive with it.

Compare with prior art, the beneficial effect of the utility model is: electrode tightly is sandwiched in the center contact pin of socket in " cage " in the elasticity cage modle of this plug, and the breaking phenomena in preventing to use takes place; To make overall diameter little to the 2mm for this plug simultaneously.

Description of drawingsFig. 1 is the axonometric projection sketch map of each disassembled state of the utility model cage modle dc power plug preferred embodiment;

Fig. 2 is interior electrode 20 axonometric projection sketch mapes in the said preferred embodiment;

Fig. 3 is that the master of the cage modle dc power plug of said preferred embodiment looks cross-sectional schematic;

Fig. 4 is the cross-sectional schematic of A-A among Fig. 3;

Fig. 5 is the axonometric projection sketch map of the cage modle dc power plug of said preferred embodiment.

EmbodimentBelow, further set forth the utility model in conjunction with each preferred embodiment shown in the accompanying drawing.

Referring to Fig. 1 to Fig. 5; The preferred embodiment one of the utility model is design, produces a kind of cage modle dc power plug, comprises external electrode pipe 10 and the interior electrode 20 that is enclosed within this its, has between the two to make insulated from each other and fixing is the working of plastics 30 of one; Particularly; The interior electrode 20 that adopts the punching press of high resiliency metal sheet to process, it is provided with tubulose leading portion 21 tube walls that the center contact pin of respective socket cooperates and is no less than 2 grooves parallel with the axis 22, makes this tubulose leading portion 21 be cage type; With the adaptive socket center contact pin of this attaching plug insert said in the leading portion 21 it " cage " of electrode 20, contact with the tight face of tube wall at these leading portion 21 middle parts.

The interior diameter d of said tubulose leading portion 21 middle is the minimum interior diameter of this leading portion 21; This minimum diameter d is less than the overall diameter of said socket center contact pin.

In the rear end of said dc power plug, in the gap between said interior electrode 20 and the working of plastics 30, be plugged with the elasticity plug 40 adaptive with it.

Electrode 20 is the method production of adopting punching press with the metal sheet of good springiness in described in this example; Be injection molded into working of plastics 30 with plastics at outer conductor 10, interior electrode 20 filled in it from the rear portion of working of plastics 30, again plug 40 is filled in said interior electrode 20 and working of plastics 30 rear gap, promptly make a cage modle DC plug.Because the interior electrodes use very thin thickness and the elastomeric metal material of cage modle, the minimum diameter d size of the tubulose leading portion 21 of this interior electrode 30 can be accomplished very little, and then the whole plug overall diameter is so small to have only about 2mm.

Claims

1. cage modle dc power plug comprises external electrode pipe (10) and ccontaining interior electrode (20) in it, between external electrode pipe (10) and the interior electrode (20) is to make insulated from each other and fixing is the engineering plastics (30) of one, it is characterized in that:

With the interior electrode (20) of high resiliency metal sheet drawing, be provided with tubulose leading portion (21) tube wall that the center contact pin of respective socket cooperates and be no less than 2 grooves parallel (22) with the axis, make this tubulose leading portion (21) be cage type; Insert in the leading portion (21) it " cage " of said interior electrode (20) with the adaptive socket center contact pin of this attaching plug, contact with the tight face of tube wall at this leading portion (21) middle part.

2. according to the said cage modle dc power plug of claim 1, it is characterized in that:

The interior diameter d of said tubulose leading portion (21) middle is the minimum interior diameter of this leading portion (21); This minimum diameter is less than the overall diameter of said socket center contact pin.

3. according to the said cage modle dc power plug of claim 1, it is characterized in that:

In the rear end of said dc power plug, in the gap between said interior electrode (20) and the plastics (30), be plugged with the elasticity plug (40) adaptive with it.