CN206558743U

CN206558743U - DC plug and its inner tube

Info

Publication number: CN206558743U
Application number: CN201720299603.5U
Authority: CN
Inventors: 俞红春
Original assignee: Cixi City Jia Jing Electronics Co Ltd
Current assignee: Cixi City Jia Jing Electronics Co Ltd
Priority date: 2017-03-24
Filing date: 2017-03-24
Publication date: 2017-10-13
Anticipated expiration: 2027-03-24

Abstract

The utility model discloses a kind of DC plug and its inner tube, including described inner tube, the insulation tube of outer tube and filling therebetween, the end of the insulation tube offers resigning breach, the tailpin pipe portion is placed in resigning breach, the production technology for simplifying whole DC plug is set by integrally formed inner tube, production efficiency is improved；Secondly the resigning breach that is opened up so that the outer wall of tailpin pipe exposes in the external world, and then facilitates that both after the welding of wire and tailpin pipe, and welding are fixed more firm on insulation tube end, and the inner tube for the shaping that integrally combines improves whole DC plug transmission performance.

Description

DC plug and its inner tube

Technical field

The utility model is related to a kind of power connector, more particularly to a kind of DC plug and its inner tube.

Background technology

DC plug is widely used in a kind of low-voltage DC power connector in computer peripheral/consumer electronics.It is existing DC plug as shown in figure 1, including as mouth pipe 11 and tail pipe 12 by riveting formed by inner tube, outer tube 14 and including Pipe, the injection molding tube 13 filled between outer tube 14 constitute, and tail pipe 12 is partially disposed in the outside in injection molding tube 13 as terminals Son is connected with wire.DC plug is typically coordinated with DC socket 2 when in use, and DC socket 2 includes center pin 21 and periphery Contact chip 22, when DC plug 1 is inserted into DC socket 2, center pin 21 connects with mouth pipe 11 and outer tube 14 respectively with contact chip 22 Touch to reach transfer function.The inner tube of above-mentioned DC plug is due to being that split is set, electric current connecting portion when flowing through inner tube junction Position easily generates heat and produces small deformation, has influence on the transmission of signal.

Utility model content

First purpose of the present utility model is to provide a kind of integrally formed DC plug inner tube, improves transmission performance.

Above-mentioned technical purpose of the present utility model technical scheme is that：

A kind of DC plug inner tube, including integrally formed mouth pipe and tailpin pipe, the mouth pipe is with tailpin pipe in ladder point Cloth and both are internal interconnects to form pin passage, wherein mouth pipe includes the introduction part positioned at end, and the introduction part includes Tapered and big opening end loudspeaker section outwardly and the outer rim and the firm ring that extends radially outwards for being integrally attached to loudspeaker section；Institute State the closure that tailpin pipe includes being used to close pin passage.

By using above-mentioned technical proposal, mouth pipe eliminates both assemblings first with tailpin pipe using the mode that is integrally formed Process, secondly when the junction wall thickness reduction of mouth pipe and tailpin pipe causes electric current to pass through, caloric value is reduced, the deformation of inner tube In addition to amount is greatly reduced, and center pin is easily introduced into mouth pipe when the introduction part set by mouth tube end is except grafting, utilize It can be coated in the loudspeaker section that taper is set and after the firm Huan centers pin insertion that its outer rim is set, and in introduction part A separate cavities are formed between inwall and center pin outer wall, electric current can be shunted after the pin of center, it is a part of from introduction part By being connected using the firm ring in introduction part with the grounded part on socket, play a protective role, while can also improve whole The steadiness of mouth pipe, improves the setting of the closure on transmission performance, last tailpin pipe and avoids in quadric injection mould mistake on the whole Injection molding material is entered in pin passage in journey, influence transmission.

Preferably, the junction of the mouth pipe and tailpin pipe is provided with conical section.

By using above-mentioned technical proposal, mouth pipe is distributed the pulling capacity for improving whole inner tube with tailpin pipe in ladder first Deformation is less likely to occur, connection between the two is improved secondly by the conical section set by the junction of mouth pipe and tailpin pipe Intensity, further lifts the pulling capacity of inner tube.

Preferably, the diameter ratio of the diameter of the tailpin pipe and mouth pipe is between 0.65 ~ 0.71.

By using above-mentioned technical proposal, the diameter of mouth pipe and tailpin pipe is counter-bending stronger than design synthesis to whole inner tube The size of degree, non-deformability and pulling capacity, improves the service life of inner tube.

Preferably, said inner tube is uniform wall thickness, and the wall thickness of inner tube is between 0.14 ~ 0.19mm.

By using above-mentioned technical proposal, each portion of inner tube is arranged to uniform wall thickness and ensures big when electric current flows on inner pipe It is small, improve stability during transmission；Improve and draw while certain structural strength is ensured, further secondly by the wall thickness of inner tube Pull out force.

Second purpose of the present utility model is to provide a kind of DC plug for transmitting stabilization and safety.

A kind of DC plug, including described inner tube, the insulation tube of outer tube and filling therebetween, the insulation tube End offers resigning breach, and the tailpin pipe portion is placed in resigning breach.

By using above-mentioned technical proposal, the production technology for simplifying whole DC plug is set by integrally formed inner tube, carried High efficiency；Secondly on insulation tube end the resigning breach that is opened up so that the outer wall of tailpin pipe exposes in the external world, and then Both after the welding of wire and tailpin pipe, and welding are facilitated to fix more firm, the inner tube for the shaping that integrally combines is improved entirely DC plug transmission performance.

Preferably, the insulation tube includes the first linkage section, the second linkage section and the 3rd connection being sequentially connected Section, wherein the diameter of the second linkage section is less than the diameter of the first linkage section and the 3rd linkage section and formed on insulation tube Stopper slot for spacing outer tube.

By using above-mentioned technical proposal, it is spacing that stopper slot is formed such that outer tube is obtained in the axial direction, improves outer tube Pulling capacity, while improving transmission performance.

Preferably, the introduction part be housed in the first linkage section and the end face of introduction part and the first linkage section end Face flush.

By using above-mentioned technical proposal, loudspeaker in introduction part section and the firm ring radially extended are increased and insulated Contact area between pipe, improves the stationarity of inner tube；Secondly because the end face of introduction part and the first linkage section concordantly makes The contact area with socket inner walls must be increased, and then stability is improved after DC plug is connected with DC socket, both are reduced What DC plug was produced after grafting rocks.

Preferably, the outer tube includes the retainer ring radially extended from end to insulation tube side, the retainer ring Positioned at the junction of the first linkage section and the second linkage section.

By using above-mentioned technical proposal, the setting of retainer ring is further to improve the fixation of outer axial tube upwards while week Also obtain spacing upwards, improve the pulling capacity of outer tube so that transmission performance gets a promotion.

In summary, the utility model has the advantages that：

1st, the production process of whole DC plug is simplified by integrally formed inner tube, secondly insulation tube is opened up in end Resigning breach tailpin pipe is placed in resigning breach facilitate follow-up wiring, improve production efficiency, and reduce Production cost；

2nd, it is consistent by the size of current for setting the inner tube of uniform wall thickness to pass through inner tube, while mouth pipe and tail Needle tubing diameter shows ladder than setting and set, and improves the pulling capacity of inner tube, secondly the spacing stopper slot in insulation tube of outer tube And the retainer ring that end is set further improve outer tube axial direction and circumference on stationarity, and improve the drawing of outer tube Power, integrally improves the performance transmitted during with socket grafting.

Brief description of the drawings

Fig. 1 is the grafting schematic diagram of DC plug and DC socket in the prior art；

Fig. 2 is the sectional view of DC plug in the present embodiment.

Fig. 3 is the front view of inner tube in the present embodiment；

Fig. 4 is the structural representation of DC plug in the present embodiment.

In figure：1st, DC plug；10th, inner tube；11st, mouth pipe；111st, conical section；112nd, introduction part；1121st, loudspeaker section；1122、 Firm ring；12nd, tailpin pipe；121st, closure；13rd, insulation tube；131st, the first linkage section；132nd, the second linkage section；1321st, it is spacing Groove；133rd, the 3rd linkage section；1331st, resigning breach；14th, outer tube；141st, retainer ring；15th, pin passage；2nd, DC socket；21st, in Heart pin；22nd, contact chip.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Referring to Fig. 2 and Fig. 3, a kind of DC plug 1, including integrally formed inner tube 10, outer tube 14 and it is filled in inner tube 10 Insulation tube 13 between outer tube 14.

Whole inner tube 10 is uniform wall thickness, and wall thickness is 1.6mm, and the inside of inner tube 10 has the pin passage of an insertion 15, including stepped distribution mouth pipe 11 and be connected to the tailpin pipe 12 of the one end of mouthful pipe 11, wherein the diameter of mouth pipe 11 will More than the diameter of tailpin pipe 12, the diameter of tailpin pipe 12 compares 0.69 with the diameter of mouth pipe 11, and in mouth pipe 11 and tailpin pipe 12 Junction is connected by a conical section 111.

Mouth pipe 11 includes the introduction part 112 being arranged far from the one end of tailpin pipe 12, and introduction part 112 includes big opening end outwardly And tapered loudspeaker section 1121 and the firm ring 1122 for being integrally attached to the outer rim of loudspeaker section 1121 and extending radially outwards, 1121 buses of loudspeaker section and the angle a of the axis of inner tube 10 are 45 °.

Tailpin pipe 12 is provided with closure 121 in one end close to conical section 111, and the closure 121 is by flattening tailpin The outer wall of pipe 12 to close pin passage 15.

Insulation tube 13 is formed by pressure injection, including the first linkage section 131, the second linkage section 132 and the 3rd being sequentially connected Linkage section 133, the diameter of the second linkage section 132 is less than the diameter of the first linkage section 131 and the 3rd linkage section 133 so that Insulation tube 13, which is located on the position of the second linkage section 132, forms a stopper slot 1321, and described outer tube 14 is spacing in the stopper slot In 1321, and the both ends of the surface of outer tube 14 are contradicted on the end face of the first linkage section 131 and the 3rd linkage section 133 respectively.

Above-mentioned outer tube 14 is cylindrical, the fixation for setting the oriented side of insulation tube 13 to radially extend on end face wherein Ring 141, the wall contacts of retainer ring 141 not with inner tube 10.

After the shaping of insulation tube 13, introduction part 112 is located in the first linkage section 131, and the end face of firm ring 1122 with absolutely The end face flush of edge ring；Closure 121 on other tailpin pipe 12 is located in the second linkage section 132.

With reference to Fig. 2 and Fig. 3, the 3rd linkage section 133 offers a resigning breach 1331, and tailpin pipe 12 is partially disposed in this and allowed In the breach 1331 of position, and then facilitate the welding operation of tailpin pipe 12 and wire.The 3rd linkage section 133 is frustum simultaneously, convenient The pulling capacity of whole DC plug 1 is improved when secondary encapsulated.

When in use, by mouth pipe 11 is toward socket DC2 one end and carries out grafting operation, center pin 21 is from introduction part 112 Enter in pin passage 15, while outer tube 14, which is extruded and contradicted each other with contact chip 22, realizes that signal is transmitted.

Pulling capacity is carried out respectively to the DC plug 1 and existing DC plug 1 of the present embodiment below by way of pull-out test Size test.

Testing tool：Universal tensile testing machine；

Method of testing：DC plug 1 and DC socket 2 are completed to inserting operation, respectively by DC plug 1 and DC socket 2 first It is installed in the fixed seat of universal tensile testing machine, and starts universal tensile testing machine, and records DC plug 1 and DC socket 2 is complete Value of thrust when fully separating, is carried out continuously three times with group test.

Existing DC is inserted with and the DC plug pull-out test result table 1 in the present embodiment

As it can be seen from table 1 in the present embodiment DC plug 1 pass through after a series of improvement with DC socket 2 connection jail By being got a promotion in property.

This specific embodiment is only to explain of the present utility model, and it is not to limitation of the present utility model, ability Field technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but As long as all being protected in right of the present utility model by Patent Law.

Claims

1. a kind of DC plug inner tube, it is characterised in that including integrally formed mouth pipe（11）And tailpin pipe（12）, the mouth pipe （11）With tailpin pipe（12）Interconnect to form pin passage in ladder distribution and both inside（15）, wherein mouth pipe（11）Including Introduction part positioned at end（112）, the introduction part（112）Including the loudspeaker section tapered and big opening end outwardly（1121）And It is integrally attached to loudspeaker section（1121）Outer rim and the firm ring that extends radially outwards（1122）；The tailpin pipe（12）Including with In closing pin passage（15）Closure（121）.

2. DC plug inner tube according to claim 1, it is characterised in that the mouth pipe（11）With tailpin pipe（12）Connection Place is provided with conical section（111）.

3. DC plug inner tube according to claim 1, it is characterised in that the tailpin pipe（12）Diameter and mouth pipe（11） Diameter ratio between 0.65 ~ 0.71.

4. DC plug inner tube according to claim 1, it is characterised in that said inner tube（10）For uniform wall thickness, inner tube （10）Wall thickness between 0.14 ~ 0.19mm.

5. a kind of DC plug, it is characterised in that including the inner tube described in any one of claim 1 ~ 4（10）, outer tube（14）And The insulation tube of filling therebetween（13）, the insulation tube（13）End offer resigning breach（1331）, the tailpin Pipe（12）It is partially disposed in resigning breach（1331）It is interior.

6. DC plug according to claim 5, it is characterised in that the insulation tube（13）First including being sequentially connected connects Connect section（131）, the second linkage section（132）And the 3rd linkage section（133）, wherein the second linkage section（132）Diameter be intended to it is small In the first linkage section（131）And the 3rd linkage section（133）Diameter and in insulation tube（13）On formed for spacing outer tube （14）Stopper slot（1321）.

7. DC plug according to claim 6, it is characterised in that the introduction part（112）It is housed in the first linkage section （131）Interior and introduction part（112）End face and the first linkage section（131）End face flush.

8. DC plug according to claim 6, it is characterised in that the outer tube（14）Including from end to insulation tube（13） The retainer ring that side is radially extended（141）, the retainer ring（141）Positioned at the first linkage section（131）With the second linkage section（132） Junction.