CN1862889B

CN1862889B - Electric connector and manufacturing method thereof

Info

Publication number: CN1862889B
Application number: CN2005100688188A
Authority: CN
Inventors: 黄英良
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-05-11
Filing date: 2005-05-11
Publication date: 2010-06-16
Anticipated expiration: 2025-05-11
Also published as: HK1095215A1; CN1862889A

Abstract

This invention relates to electrical connector and its manufacturing method. The connector includes one connecting unit, the unit has one insulating seat, and the seat has at least one splicing part and bonding part. At least one conducting terminal indirectly set on the seat. At least one metal joint coated the splicing part of the seat. One metal shell with one open mouth, the bonding part and the corresponding terminals are set in the shell through the open mouth, and at least one metal middle component used to electrical connect the shell and the corresponding metal joint, the metal jointis prominence in the middle component. The electrical connecting device has good electromagnetic wave shield effect, and the pressure and strength condition in existing technique is not occurred, so the thickness and volume of the insulating material will not increase.

Description

Electric connector and manufacture method thereof

[technical field]

The present invention relates to a kind of electric connector, particularly relate to a kind of in order to link electric room, electric connector and manufacture method thereof that signal transmits.

[background technology]

In nearly recent decades, digitisation and high frequencyization along with electronic equipment, Electromagnetic Interference (Electro-Magnetic Interference, hereinafter to be referred as EMI) and radiation frequency interferences (Radio-Frequency Interference, hereinafter to be referred as RFI) problem that produced, except electric equipment and electronic instrument are caused the interference, many reports are also suspected with research or are confirmed that EMI and RFI have direct or indirect harm relation for human body, so how to prevent EMI and RFI, make electronic equipment and environment facies be in harmonious proportion, (Electro-Magnetic Compatibility EMC) has become one of international fresh target of being pursued to the electromagnetic compatibility of coexistence.

At present the method that is used to shield EMI and RFI with rubber, plastic material is broadly divided into two classes, a kind of for coat, coating method, another kind of usual way for interpolation conductivity filler in rubber, plastic cement products.Surface treatment modes such as first kind of technology has that metal (alloy) thin slice (tape), conductor coating, non-electrical lining (oxidation-reduction method), plating, ion lining, vacuum evaporation metal, zinc flame spray, the spraying of zinc arc and cathodic sputtering.The conductivity filler that second kind of technology used always have stainless steel fibre, aluminum alloy flake, glass fibre (carbon fiber) coat metal, carbon black (clad metal), brass fiber (metallic fiber), metal (alloy) powder and blending essence type electroconductive polymers such as gold and silver nickel (Inherent Conductive Polymers, ICPs) etc.

Be depicted as a kind of existing method that is used to make electric connector 1 at present as Figure 1A, 1B, 1C, prior to a plurality of conducting terminals 12 are set on the insulating base 11 at interval, this insulating base 11 has an opposite Plug Division 111 and a junction surface 112, and at these Plug Division 111 sheathed metal joints 13, the end that all terminals 12 correspond to junction surface 112 is to join with a cable 2.

Insulating material ejection formation one inner casing 14 is sentenced at junction surface 112 in contiguous insulating base 11, the conducting terminal 12 that this inner casing 14 covers corresponding to junction surface 112, then the outer peripheral face at inner casing 14 is provided with a copper foil layer 15 (also can adopt other conducting metals to replace) with coating, at last, similarly penetrate a shell 16 with insulating material, prevent coming off of insulating base 11, and this shell 16 more extends to adjacent metal joint 13 and sentences closely and envelope comprehensively copper foil layer 15.

Cover EMI and RFI purpose in order to reach, the factor that influences the product screening effect is all considered modestly, as the selection of conductive material, the cooperation of processing method, process conditions etc., it also is one of target of pursuing that the quality of product and reliability have become a strict test.

Weigh the existing method of making electric connector 1 with aforementioned various conditions, can find that this method is on processing method, process conditions, still have some problems, furthermore, copper foil layer 15 only is coated on the outer peripheral face of inner casing 14, directly do not contact with 13 of metal joints and form the gap, the bulk metal covering property is not good, causes the effect of anti-blocking EMI/RFI clear.

In view of this,, must adopt the bigger copper foil layer 15 of thickness to do one and remedy, but relatively, but cause electric connector 1 can't reach the purpose of design of microminiaturization, disagree with the trend of thin design at present for improving the screening effect of copper foil layer 15; Moreover inside and

outside shell

14,16 is by insulating material ejection formation gained, and at ejection formation pressure and intensity is dual considers down, the thickness of inside and

outside shell

14,16 certainly will can not be thin excessively, also is to cause another main cause that the volume of electric connector 1 can't miniaturization.

On the other hand, 14 sealings of moulding inner casing, location insulating base 11 and corresponding terminal 12, copper foil layer 15 can be arranged on the outer peripheral face of inner casing 14 stably whereby, for allowing the user can see the outward appearance that electric connector 1 is neat, must penetrate with the insulating material of opaque dark color and form inside and

outside shell

14,16, could thoroughly cover insulating base 11 and copper foil layer 15, causing at present on the market, finding electric connector 1 gives people's dullness, unconverted impression mostly, influence aesthetic property, more lack the replacement of choosing.

[summary of the invention]

The object of the present invention is to provide a kind of can be by metal joint, metal shell and the metal intermediate piece three coating effect fully that produces that cooperatively interacts, to improve the electric connector of electromagnetic shielding effect.

A kind of electric connector of the present invention is characterized in that it includes:

One linkage unit has:

One insulating base, this insulating base have at least one Plug Division and at least one junction surface;

At least one conducting terminal, compartment of terrain are located at this insulating base; And

At least one metal joint, the Plug Division of coated insulation seat;

One metal shell defines an accommodation space and has an opening that is connected with accommodation space, and the junction surface of this insulating base is with quilt cover is contained in the accommodation space of this shell via opening corresponding to the terminal at junction surface; And

At least one metal intermediate piece links this shell and is electrically connected with corresponding metal joint and formation, and this metal joint is given prominence to outside this intermediate piece.

Another object of the present invention is to provide a kind of raising metallic cover, make electromagnetic shielding effect complete, and can simplify the electric connector making method of processing procedure, reduction.

According to aforementioned conception, a kind of electric connector making method of the present invention is characterized in that comprising following steps:

(1) purchase a linkage unit, the interval is provided with at least one conducting terminal and forms linkage unit on an insulating base, and this insulating base has a Plug Division and a junction surface, and is arranged with a metal joint outside this Plug Division;

(2) go out a shell and an intermediate piece with metal material moulding, wherein this shell defines an accommodation space and forms an opening that is interconnected with accommodation space; And

(3) make the junction surface of insulating base and overlapped by metal shell cover corresponding to the terminal at this junction surface is contained in the accommodation space, intermediate piece then is sheathed on linkage unit, and, insulating base, conducting terminal are coated with matching fully by shell, intermediate piece and joint in order to link the joint and the metal shell of linkage unit.

Electric connector of the present invention can be by metal joint, metal shell and the metal intermediate piece three coating effect fully that produces that cooperatively interacts, to improve electromagnetic shielding effect.

[description of drawings]

Below by most preferred embodiment and accompanying drawing electric connector of the present invention and manufacture method thereof are elaborated, in the accompanying drawing:

Figure 1A, 1B, 1C are manufacturing flow charts, and a kind of existing method that is used to make electric connector is described.

Fig. 2 is a three-dimensional exploded view, and a preferred embodiment of electric connector of the present invention is described.

Fig. 3 is a flow chart, illustrates in order to make the method for this electric connector.

Fig. 4 is a three-dimensional combination figure of this preferred embodiment.

Fig. 5 is the assembled sectional view after assembling is finished in this preferred embodiment.

Fig. 6 is another three-dimensional exploded view, and another preferred embodiment of electric connector of the present invention is described.

Fig. 7 is that two switching roles between electric connector are played the part of in a preferred embodiment again of explanation electric connector of the present invention.

[embodiment]

As shown in Figure 2, a preferred embodiment of electric connector 9 of the present invention is to comprise: a linkage unit 3, a shell 4, an intermediate piece 5, a cover frame 6, and locating unit 7.

Cooperate Fig. 3 that the manufacture method 8 of this preferred embodiment is described, at first purchase one by the made insulating base 31 of plastic material in step 81, make at least one conducting terminal 32 (present embodiment is most) compartment of terrain be located on this insulating base 31, this insulating base 31 has a Plug Division 311 and a junction surface 312, this Plug Division 311 is in contrast to the junction surface 312, and the position is at the two opposite sides of insulating base 31, and the orientation of all conducting terminals 32 is the lines that are same as 312 of Plug Divisions 311, junction surface.

In addition joint 33 covers made from a metal material are overlying on the Plug Division 311 of insulating base 31, and joint 33 311 extends a grounding parts 331 adjacent with conducting terminal 32 toward junction surfaces 312 directions from the Plug Division, just finishes this linkage unit 3 assemblings.

Then enter step 82, go out shell 4 and intermediate piece 5, the metal that shell 4 and intermediate piece 5 are selectively handled as surperficial plating with nickel (or other materials) with metal material moulded section.This shell 4 defines an accommodation space 41, and has an opening 42 and a sleeve joint hole 43, and opening 42 all is communicated with these accommodation space 41 formations with sleeve joint hole 43.Have one as for 5 of this intermediate pieces and place hole 51, the shape that places hole 51 is the section of outline corresponding to metal joint 33.

In shell 4 and intermediate piece 5 manufacturing process, form positioning unit 7 more simultaneously, wherein, four first keepers 71 are the outer peripheral faces that are formed at shell 4 relative proximity openings 42 at interval, other four second keepers 72 are formed in intermediate piece 5 away from placing 51 places, hole, and the position of each first keeper 71 is corresponding each second keeper 72.Inner a plurality of positioning convex points 46 and the insulating base 31 of forming of shell 4 fastens fixingly mutually in addition, excessively is absorbed in the shell 4 to prevent linkage unit 3.

First keeper 71 that is adopted in the present embodiment is protruding grain, second keeper 72 is a caulking groove, certainly, if change first keeper 71 into caulking groove, second keeper 72 changes protruding grain into and also is interchangeable kenel, quantity also is applicable to variation aspect of the present invention as for other similar means that are used for urgent, clip, joint equally, precisely because can be adjusted to some extent according to the actual size of electric connector 9.

In this step 82 more mould is auxiliary down can in addition first ejection formation one cover frame 6, assemble at whole joint 33 and a cable 2 ' and to put after finishing.This cover frame 6 is made with the insulating material that supports character by the tool insulation effect, preferably can be selected from PVC, PE, PC, PET and the ABS of the transparent or opaque character of tool, present embodiment is to adopt transparent PVC for making material, is convenient to the user and sees inner structure and the quality of inspecting metal shell 4 clearly.

This cover frame 6 also can be sent into shell 4 in the thermoplastic environment earlier and be carried out step after linkage unit 3, intermediate piece 5, shell 4 threes finish the socket step, utilizes mould directly the insulating material coating to be taken shape on the outer surface of shell 4.

Wait to finish linkage unit 3, shell 4, intermediate piece 5 and cover frame 6 prepare work after, can enter in the step 83.Prepare a cable 2 ', the sleeve joint hole 43 of this cable 2 ' from shell 4 pierced in the accommodation space 41, extend by opening 42 at last, make an end and 2 ' the formation wiring of this cable of position all conducting terminals 32 of 312 at the junction surface, in addition, the grounding parts 331 of this joint 33 also directly is connected to form ground connection with this cable 2 ', to guarantee that ground connection is good and cause ground connection property more unobstructed, EMI is reduced.At this moment, this shell 4 is to cover the junction surface 312 of covering insulating base 31 fully and corresponding to the conducting terminal 32 at junction surface 312, it is to protrude in the external environment with joint 33 that the Plug Division 311 of insulating base 31 is only arranged.

Cooperate Fig. 4 and shown in Figure 5, then put intermediate piece 5 from the Plug Division 311 of insulating base 31, because what intermediate piece 5 had corresponding joints 33 section of outline places hole 51, therefore, this intermediate piece 5 can wear for joint 33 and place hole 51, and opposing tabs 33 slides into the position that can carry out snapping with shell 4.Promoting intermediate piece 5 continues to move toward shell 4 directions, bestow this intermediate piece 5 certain external force, allow each first keeper 71 be snapped in corresponding second keeper 72, intermediate piece 5 and shell 4 can't be relatively moved arbitrarily, and then reach fixed effect, assembly working so far, whole insulating base 31 and conducting terminal 32 are all covered with shell 5 threes by metal joint 33, intermediate piece 4, only have metal joint 33 to expose in external environment in the linkage unit 3.

Present embodiment is by set place of insulating base 31 as all conducting terminals 32, simultaneously, at the Plug Division of insulating base 31 311 clad metal joints 33, the junction surface 312 sheathed metal shells 4 of insulating base 31, more the intermediate piece 5 that forms bridge joint is set, when signal transmission generation high-frequency vibration, constitutes comprehensive metallic cover effect in

joint

33 and 4 on shell, that is to say that electromagnetic shielding effect promotes, significantly reduce intermittent puzzlement of opening circuit.

Moreover, even still have atomic little electromagnetic-wave leakage, also can under grounding parts 331 guiding of joint 33, be converted to electric current at once, flow out via the earth connection (figure does not show) of cable 2 ', directly the metallic cover effect of auxiliary joint 33, intermediate piece 5 and shell 4 allows electromagnetic shielding effect more see ideal.

On the other hand, the present invention is in shell 4 and intermediate piece 5 manufacture processes, be to take the pressing mold mode one-body molded respectively, no longer utilize insulating material ejection formation sandwich construction, so need not consider to penetrate the moulding factors such as pressure, intensity and thickness of material fully,, work flow can be abbreviatied really with regard to the practical operation aspect, and the reduction task difficulty, form direct and positive influence for making efficient.

More noticeablely be, owing to relate to the pressure and the strength factor of ejection formation, in the existing electric connector 1,

shell

14,16 thickness can not be thin excessively, add that prior art is to guarantee not penetrating of high-frequency signals, copper foil layer 15 must reach more than the certain thickness, relatively, volume also just must increase thereupon, but this problem has obtained to overcome in the present invention, this electric connector 9 no longer relies on single copper foil layer 15, more give up in the ejection formation,

shell

14,16 technology sees through joint 33, the isolated fully high-frequency signals of intermediate piece 5 and shell 4 threes allows the ideal of electric connector 9 more past miniaturizations stride forward.

Electric connector 9 as for just not being socketed with before the cover frame 6 has presented the complete aspect of one in appearance, also can directly not use and not counteract even cover frame 6 is set.Certain this cover frame 6 is being played the part of decoration, beautified in electric connector 9 role, present embodiment is except the application of aforementioned transparent material, more more can add look grain and transparent material and be pre-mixed, just can obtain multiple colour cover frame 6 and select for use for the consumer with multiple variation.

Cable 2 ' in the above stated specification also can be another electric connector, just this electric connector 9 is as the media between two electric connectors, cable 2 ' more can be to replace to the PCB circuit board that forms wiring with conducting terminal 32, and when Plug Division 311, junction surface 312 numbers of linkage unit 3 are two when above altogether, applied electric connector and PCB circuit board quantity will be more, and only present embodiment is that to be installed in the electric connector 9 that only has a junction surface 312 with single cable 2 ' be that example is illustrated.

As shown in Figure 6, another preferred embodiment of electric connector 9 ' of the present invention almost is equal to an embodiment, and its difference is in and screws togather institute in: this shell 4 up and down by one first housing 44, second housing 45 and forms, adds intermediate piece 5 bindings.In addition, this cover frame 6 is not the outer peripheral face that is directly molded on this shell 4, but earlier other moulding should be covered frame 6, utilize mechanical system will cover frame 6 again and strut sheathed being coated on the shell 4 in back, make the connection relationship between these cover frame 6 stiffened shell 4 and cable 2 ', finish the combine and assemble of electric connector 9 ' then.

This preferred embodiment engages composition shell 4 with first and second housing 44,45 and replaces one-body molded, and insulating material also can change by coating moulding in the thermoplastic environment, both provide him to plant feasible enforcement and have selected, and belong to all that the stakeholder is familiar with in this technical field, and other does not state clearly in detail in this.

A preferred embodiment has more as shown in Figure 7 disclosed electric connector 9 ' of the present invention and has played the part of the role of switching at two other electric connector (not drawing among the figure), that is to say, for pegging graft smoothly to transmit electric signal with two electric connectors, this junction surface 312 ' must manufacture the profile external form identical with Plug Division 311, could use as the conversion of pegging graft.This embodiment illustrates the present invention except can socket-connecting with printed circuit board (PCB), cable, more the signal transmission between two electric connectors of possibility media.

Conclude above-mentioned, electric connector 2 of the present invention and manufacture method 8 thereof link joint 33 and shell 4 by intermediate piece 5, make the three form complete metallic cover, add that the grounding parts 331 of top connection 33 is auxiliary to transfer small electromagnetic wave to the ground connection derivation, reach effective again comprehensively electromagnetic wave shielding effect, in addition, the present invention more changes the existing electric connector 1 stiff outward appearance that changes that lacks again, the image of making us fresh and new is provided, can have reached the object of the invention really.

Claims

1. electric connector is characterized in that it includes:

One linkage unit has:

At least one metal joint, the Plug Division of coated insulation seat;

At least one metal intermediate piece, linking this shell is electrically connected with corresponding metal joint and formation, this metal joint is given prominence to outside this intermediate piece, and this metal intermediate piece is socketed on this shell and forms one and places the hole, and this shape that places the hole is to wear for this metal joint corresponding to this joint section of outline.

2. electric connector as claimed in claim 1, it is characterized in that: this electric connector more comprises locating unit, this positioning unit has at least one first keeper that is formed at this shell, and at least one is formed at second keeper of this intermediate piece and corresponding first keeper, by first and second keeper clip and locate this shell and intermediate piece each other.

3. electric connector as claimed in claim 2 is characterized in that: this first keeper is protruding grain, and this second keeper is a caulking groove.

4. electric connector as claimed in claim 2 is characterized in that: this first keeper is a caulking groove, and this second keeper is protruding grain.

5. electric connector as claimed in claim 1 is characterized in that: this shell has one first housing and one second housing that connects.

6. electric connector as claimed in claim 1 is characterized in that: this metal joint comprises that one and one cable forms the grounding parts of ground connection, and penetrates this insulating base and protrude in the junction surface.

7. electric connector as claimed in claim 1 is characterized in that: the Plug Division of this insulating base and junction surface are positioned at the two opposite sides of insulating base respectively.

8. electric connector as claimed in claim 1 is characterized in that: all terminals are wherein one to form wiring with an electric connector, a printed circuit board (PCB), a cable and adapter corresponding to an end of abutting end.

9. electric connector as claimed in claim 1 is characterized in that: this electric connector more comprises a cover frame that is coated on the metal shell outside.

10. electric connector as claimed in claim 9 is characterized in that: this cover frame is made by insulating material.