CN100517875C

CN100517875C - Electrical connector for printed circuit board

Info

Publication number: CN100517875C
Application number: CN 03804420
Authority: CN
Inventors: 野田敦人; 手塚宣弥
Original assignee: Molex LLC
Current assignee: Molex LLC
Priority date: 2002-02-22
Filing date: 2003-02-21
Publication date: 2009-07-22
Anticipated expiration: 2023-02-21
Also published as: JP4000865B2; TW579086U; JP2003257566A; WO2003073558A1; CN1639922A; AU2003211153A1

Abstract

An electrical connector 10 for mounting to a printed circuit board, comprises a dielectric housing 40 and a plurality of terminals 20 arranged side by side at the predetermined pitch. Each terminal 20 includes a flat base portion 21, a pair 24 of contact members formed from a continuous folded-back portion 23 that is folded back to one side of the flat base portion 21, and a carrier coupling section 30 that is bent at substantially right angle to the opposite side of the flat base portion 21. The housing 40 holds the terminals 20 by an over-molding of the housing around the flat base portions 21 of the terminals 20 to form a generally flat plate-like housing. The pair 24 of contact members of the terminal 20 extends toward one surface 40A of the dielectric housing 40 and the carrier coupling section 30 extends toward the other surface 40B of the housing 40.

Description

The electric connector that is used for printed circuit board (PCB)

Technical field

Present invention relates in general to a kind of electric connector that is suitable for being installed to printed circuit board (PCB), and specifically, relate to a kind of connector that is used in solder sphere grid array (BGA) application.

Background technology

In the past, the electric connector of known a kind of the type comprises dielectric enclosure and a plurality of terminal.Fig. 6 and 7 shows the example of this prior art connector, and specifically, Fig. 6 shows a terminal 100 of connector.A plurality of this terminals 100 are installed or be press fit into shell 200 (Fig. 7), to finish electric connector 300.Though only show a terminal 100 in the drawings, in fact with predetermined spacing a plurality of this terminals 100 that are arranged side by side.With reference to figure 6, terminal 100 comprises a pair of contact component, or arm 101, the interference fit part 102 that forms at the pedestal place of contact component, and with press-fitted portions divide adjacent formation, be used for the standing part 103 that is connected with soldered ball 104.Produce terminal 100 by compacting and forming processes by foil.

Receive terminal 100 in the terminal reception cavity (not shown) in being formed on shell 200 and make interference fit part 102 carry out interference fit, thereby terminal 100 is kept in position with respect to the inwall that terminal receives cavity.Soldered ball 104 is welded to the standing part 103 of terminal 100, and the relative parts of soldered ball 104 and standing part 103 are outwards outstanding from shell 200.

In Fig. 7, show matching connector 400, it comprises having a plurality of dielectric enclosure 600 that are installed in contact pin 500 wherein, wherein pin 500 is with the part of one-one relationship corresponding to the contact component of terminal 100 in the connector 300.Connector 300 and matching connector 400 form connector assembly.Usually, each

connector

300 and 400 is installed to their printed circuit board (PCB)s separately, makes them to be connected to each other by

connector connector

300 and 400.

As mentioned above, except terminal receives cavity, another kind known in the state of the art is used for terminal is remained on the device of dielectric enclosure, wherein form by the terminal of shell passage is installed, and the lateral edges of terminal is locked to this terminal (for example, referring to the open JP-11-144821 of Japan Patent) on the opposed inner walls of passage is installed.

The connector of these prior aries has a problem, that is, receive in cavity or the passage because have to that each terminal is press fit into terminal, makes their installation of terminal need a lot of number of assembling steps and therefore increase manufacturing cost.Consider that present electronic installation tends to the multipole configuration and the trend of high terminal density more, and with the be arranged side by side appearance of the design that is not less than 100 terminals of high density more, be starved of and address the above problem.

In addition, the terminal of the prior art that forms in shell receives cavity or passage is installed and can produce other problem, such as when solder connector and the circuit board, by the gap between terminal and its cavity or passage, may produce the suction tin effect of solder flux or scaling powder, this may cause the pollution of the contact component that the terminal with matching connector matches.

Consider the problems referred to above, the purpose of this invention is to provide a kind of electric connector, the problem that it can reduce the manufacturing cost of connector and eliminate the wicking of solder flux or scaling powder with the configuration of improving.

Summary of the invention

For reaching this purpose, for a kind of electric connector that is used to be installed to printed circuit board (PCB), it comprises dielectric enclosure and a plurality of terminals that are arranged side by side with predetermined spacing, improvements according to the present invention are: each terminal comprises the flat base part, and the contact component that first on flat base part one side folded back partly continuously and but crooked second section of folding back of passing base part extending at the base part opposite side forms is right by being folded back over; Shell forms common flat disk shell by Overmolded (over-molding) that carries out terminal flat base part shell on every side, thereby keeps terminal; And extend on a surface of the contact component subtend shell of terminal, and the support connecting section extends to another surface of shell.

According to one embodiment of present invention, with the contact component of each terminal to being placed in the recess in the described surface that is formed on shell.

According to another embodiment of the present invention, the opening of the flat base part of guiding terminal is provided to another surface of shell, and connector further comprises: soldered ball, it is welded to the flat base part through this opening, and it outwards is projected into outside another surface of shell.

According to another embodiment of the invention, terminal further comprises the sweep that is connected between flat base part and the support connecting section, and cutting out section, it is formed on and allows to form in the resin material inflow sweep wherein of shell, thus the terminal substrate part is suitably buckled in shell.

According to a further aspect in the invention, provide a kind of electric coupler component, having comprised: Gou Zao electric connector in the above described manner; And the matching connector that comprises a plurality of contact pins, each contact pin is right corresponding to each contact component of terminal with one-one relationship, and shell forms the shell of flat disk basically by shell contact Overmolded around the pin, thereby keeps in touch pin.

According to one embodiment of present invention, the opening of guiding contact pin base part is provided to a surface of matching connector shell, and this matching connector further comprises: soldered ball, it is welded to base part through this opening, and it outwards is projected into outside the described surface of shell.

According to one aspect of the invention, a kind of connector 10 is provided, comprising: insulation crust 40, it comprises: have the first and second relative outer surface 40A, the main part of 40B; The a plurality of terminals that form in the shell main part receive cavity, and each terminal receives cavity and extends through described housing main body part, arrive the first and second relative outer surface 40A of shell, 40B; And a plurality of conducting terminals 20, it is placed on described terminal and receives in the cavity, a single terminal 20 is placed in the single cavity, each terminal 20 comprises: terminal bodies part 21, it receives horizontal-extending in the cavity at its terminal that is associated, terminal bodies part 21 has a plurality of independently edges, the first and second terminal holding members of placing along the first and second relative edges of described terminal bodies part 21, and in the terminal reception cavity that is associated, extend the contact portion 24 of leaving described terminal bodies part 21, by described shell 40 is molded on the described terminal 20, be embedded in two terminal holding members in the described shell 40 and make the boundary between terminal 20 and shell 40 not produce the gap, thus described terminal bodies part 21 is remained on the appropriate location in the described shell 40, it is characterized in that: described the first terminal holding member comprises: be folded back over the zone 23 on the described terminal bodies part 21 along described terminal bodies part first edge, and the described second terminal holding member comprises the maintenance sections of placing along described terminal bodies part second edge, this maintenance sections from described terminal bodies part 21 bend to described terminal bodies part 21 at angle, described maintenance sections further is included in the opening 32 that forms along described terminal bodies part second edge in this maintenance sections, this opening 32 is filled with the material of making described shell 40, and is provided for thus described terminal 20 is buckled mode in described shell 40.

According to a further aspect of the invention, provide a kind of and be used for two circuit board interconnects electric coupler component together, this connector assembly comprises: first and second connecting elements that engage one another 50,10; First connecting element 50, it comprises: first connector shell 80 with the insulation on the first and second relative surfaces, be placed in first connector shell 80 and extend across a plurality of conductions contact pins 60 of the second surface of first connector shell, and soldered ball (62), described first connector shell 80 further comprises: be formed on a plurality of recess in the described first connector shell first surface, contact pin 60 extends into this recess, and described soldered ball 62 is placed in the described recess on the described first connector shell first surface and the described pin 60 that contacts contacts and extend across the described first connector shell first surface 80A; And second connecting element 10, it comprises: have the first and second relative outer surface 40A, second connector shell 40 of the insulation of 40B; The a plurality of terminals that form in second connector shell 40 receive cavitys, each terminal receive cavity extend fully by described second connector shell 40 and and described second connector shell, the first and second outer surface 40A, 40B communicates; Be placed on a plurality of conducting terminals 20 in the described terminal reception cavity, a single terminal 20 is placed in the single cavity, it is characterized in that: each terminal 20 of described second connecting element comprises: receive horizontally extending main part 21 in the cavity at its terminal that is associated, this terminal bodies part 21 comprises: the first and second terminal holding members of placing along the first and second relative edges of described terminal bodies part 21, and in its terminal that is associated reception cavity part, extend the contact portion 24 of leaving described terminal bodies part 21, by described shell 40 is molded on the described terminal 20, two terminal holding members are embedded in the described shell 40, thus described terminal bodies 21 parts are remained on the appropriate location in described second connector shell 40 and make that boundary does not produce the gap between the terminal 20 and second connector shell 40, described the first terminal holding member comprises the zone that is folded back over along described terminal bodies part first edge on the described terminal bodies part 21, and the described second terminal holding member comprises the maintenance sections of placing along described terminal bodies part 21 second edges, this maintenance sections bends to described terminal body from described terminal bodies part 21 and is divided into an angle, described second connecting element 10 further comprises a plurality of soldered balls (33), described a plurality of soldered ball (33) is placed on described terminal respectively and receives in the cavity, be welded to the corresponding second terminal bodies part, and extend across described second connector shell, the second outer surface 40B; And the contact pin 60 of described first connecting element extends into described second connector shell terminal reception cavity, and when described first and second connector shells 80,40 when being combined together, the contact pin 60 of described first connecting element and the termination contact part of described second connecting element 24 engage, thereby with described soldered

ball

62,33 are arranged in the opposite side away from each other of described first and second connector shells 80,40.

Advantage according to electric connector of the present invention is following each point: at first, comprise that base part, contact component are to the terminal of support connecting section and make terminal remain on the configuration in the shell because wherein shell is over-molded to, making does not need terminal interference fit step, and therefore, even also can realize manufacture process efficiently to electric connector with greater number terminal.In addition, because between shell and terminal, do not extend through the gap of shell, so in the welding operation process on printed circuit board (PCB), the possibility that any solder flux or scaling powder move up can not take place.

The second, because this contact component of terminal in the recess that is limited in shell, therefore protects this contact component to not being subjected to the influence of any distortion or pollution by shell.

The 3rd, because soldered ball is soldered to terminal substrate part and outwards outstanding from shell, therefore provide the connector of a kind of ball grid array (BGA) type.Another selection is, the connector of pin grid array (PGA) type can be provided within the scope of the present invention, wherein on the support connecting section of terminal, be provided for the pin shape weldering tail of DIP (dual in-line package, dual in-line package) welding or be used for the weldering tail of surface soldered (SMT).

The 4th, because between base part and support connecting section, have sweep, therefore in this sweep, form cutting out section, it helps the distance (or spacing) of minimizing as much as possible between the connector terminals of adjacent.This is very suitable for the little pitch arrangement of terminal.

The 5th because this matching connector also with wherein it self dielectric enclosure is over-molded to many contact pins and has identical configuration, therefore provide to have easily and the electric coupler component of mating electrical connector and matching connector ability efficiently.This connector assembly has been eliminated the possibility that in the process that connector is installed on the printed circuit board (PCB) any solder flux or scaling powder move up.

The 6th, this mating electrical connector can be the electric connector of BGA type.

To more clearly understand these and other objects of the present invention, feature and advantage by following detailed description.

Description of drawings:

In the process of these detailed descriptions, will be often with reference to the accompanying drawings, in the accompanying drawings:

Fig. 1 is a cross-sectional view, and part illustrates the electric coupler component that comprises connector and its matching connector according to an embodiment of the invention, and with the state that is connected they is shown;

Fig. 2 is the perspective view of one of terminal of the connector assembly of Fig. 1;

Fig. 3 is the front view with the terminal of the joining Fig. 2 of supporting band;

Fig. 4 is the end view of the supporting band of Fig. 3;

Fig. 5 is the perspective view of two terminals of Fig. 1, is depicted as interconnection, but removed supporting housing for cause clearly;

Fig. 6 is the perspective view of the terminal of prior art; And

Fig. 7 shows suitably in connector and the front view of the prior art terminal of the Fig. 6 that matches with matching connector.

Embodiment

With reference to figure 1, wherein show the electric coupler component that comprises connector 10 and mating electrical connector 50, both can be combined together this connector 10 and mating electrical connector 50.Connector 10 comprises with a plurality of terminals 20 of predetermined spacing to be disposed in order side by side, and dielectric enclosure 40 is molded on the terminal 20, preferably by Overmolded.Matching connector 50 comprises a plurality of contact pins 60, and it is arranged in a side-by with one-one relationship corresponding to the terminal on the connector of the present invention 20, and dielectric enclosure 80 is Overmolded on contact pin 60.As shown in Figure 1, on direction from right to left with predetermined pitch arrangement terminal 20 with contact pin 60, and in addition, on direction, arrange them perpendicular to the paper plane of Fig. 1.

Preferably produce each terminal 20 of connector 20, and form it by thin sheet of metal with shape as shown in Figure 2 by compacting.Specifically, producing terminal 20 comprises: with the base part 21 of flattened rectangular disk-form; The part 23 of folding back continuously, it is gone up along its edge 22 in base part 21 1 sides (upside) and folds back, to have the width less than base part 21 width; And a pair of contact component or arm 24, its as fold back part 23 a part and form.This contact component comprises first and second contact components to 24, and it adopts the form that projects upwards

arm

25,26.

The width of a contact arm 25 can be slightly greater than the width of another contact arm 26.

Form contact arm

25 and 26 and make vertically limit split tunnel 27 in the part 23 of folding back continuously, thereby form the contact portion of bifurcated, the plane that afterwards it is bent to base part 21 meets at right angles basically.

Contact arm

25 and 26 comprises

base pieces

27,28 separately, and it is parallel to base part 21 and extends on base part 21, (Fig. 2) and its have the length that differs from one another, contact pin 60 thereby can between

contact arm

25 and 26, receive.Free end in

contact arm

25 and 26 forms curve contact portion 25a and 26a.When receiving contact pin 60 between contact portion 25a and 26a, its strain still not exclusively separately, thereby is unclamped and the joint that contacts pin 60 so that it separates each other slightly.

Terminal substrate part 21 aligned with terminal are received cavity 41,42, and preferably they are closed, thereby limit two that separate, as to aim at sub-cavitys, these two sub-cavitys in Fig. 1, be shown in above the flat base part 21 of terminal 20 and below.As shown in the figure,

contact arm

25,26 extends upward the into first sub-cavity from base part 21, and the second sub-cavity receives soldered ball 33 therein.

In addition, terminal 20 comprises support connecting section 30 (Fig. 2) as can be seen, and it also can be counted as the sheet that folds back because its along another edge 29 of pedestal 21 with basically right-angle bending and extend relative (descending) side to base part 21.Support connecting section 30 has the width identical with pedestal 21.Provide sweep 31 to be used to be connected between pedestal 21 and the support connecting section 30, and preferably form opening 32 at sweep 31.

Preferably that shell 40 is Overmolded on terminal 20, and as four sides that embed terminal substrate part 21 or edge, to form common flat disk shell.Aspect this, this contact arm extends to a case surface 40A (top of Fig. 1) 24, and support connecting section 30 extends to relative case surface 40B.The first sub-cavity 41 by shell limits a recess, and to upper surface of outer cover 40A opening, and it has and is suitable for receiving this contact arm and makes that to 24 they can be from the shell 40 outwards outstanding size and the degree of depth.Similarly, second or lower surface 40B of second sub-cavity 42 leads and terminal substrate 21 and shell 40 communicate.As shown in the figure, support connecting section 30 can be given prominence to from shell apparent surface 40B slightly.The resin material that will be used for shell 40 is injected into the cutting out section 32 at sweep 31, and this sweep 31 is connected between support connecting section 30 and the terminal substrate 21.

Because shell 40 is molded on each conducting terminal 20, so each conducting terminal 20 is maintained at predetermined position, and provides soldered ball 33 in the opening in being formed on shell 40 bottom parts or the second sub-cavity 42.Soldered ball 33 is welded to the central area that terminal substrate 21 is exposed to opening 42, and the part of soldered ball 33 outwards is projected into outside the shell apparent surface 40B.

Fig. 3 and 4 shows a series of in that the Overmolded time before on the terminal is connected to the terminal 20 of supporting band 34 with shell 40.The support connecting section 30 of terminal 20 is connected to supporting band 34 through frangible blocking part 35.Preferably when terminal 20 still connects with supporting band 34, carry out the Overmolded of shell 40, and in the position of blocking part 35 supporting band 34 is separated afterwards.Another selection is terminal 20 and support 34 separately and with them can be arranged on predetermined position (not shown) in the mould, and afterwards, carry out the Overmolded of shell 40.

In matching connector 50, carry out the Overmolded of shell 80 at contact pin 60, thereby embed their mid portion, and form the common flat disk shell of connector 10.The pedestal 61 of contact pin 60 is in the face of the opening 81 among the surperficial 80A who is formed on shell 80.Soldered ball 62 is arranged in opening 81.A part that soldered ball 62 is welded to contact pin base 61 and soldered ball 62 is projected into outside the outer surface of shell 80.

Fig. 5 is the view that only shows terminal 20 in connector 10 and situation that 50 are combined together, contact pin 60 and soldered

ball

33,62.

As mentioned above, because wherein shell 40 is over-molded to connector 10 configurations of terminal 20, making does not need to be used for terminal 20 interference fit steps, and therefore, even, also realize efficient manufacture process for having the more connector 10 of multiterminal 20 quantity.In addition, because wherein shell 40 is over-molded to the configuration of terminal 20, make that the border between terminal 20 and shell 40 does not produce the gap.Therefore, therein soldered ball 33 is welded in the welding operation process of the base part 21 of terminal 20 and the contact pad on the printed circuit board (PCB), solder flux or the scaling powder any possibility that moves up along contact component does not take place.This allows to keep any loss of this contact component to cleaning and being avoided being electrically connected.

For matching connector 50 also is like this.Specifically, because wherein shell 80 is over-molded to the configuration of contact pin 60, therefore contacting pin 60 does not need the interference fit step, and any possibility that moves up of solder flux or scaling powder does not take place in the welding operation process of soldered ball 62.

Because wherein this termination contact arm is limited in being formed on recess 41 in the shell 40 to 24 and its any part does not have outwards outstanding configuration, make can protect this contact arm to 24 be not subjected to contacting or any external factor of any unwanted hand before matching connector 50 cooperates.In other words, can protect them not to be subjected to any distortion or pollution effect.In addition, thus can avoid any electrostatic charge to be discharged into the situation that circuit on the plate damages some elements in the circuit to 24 through this contact component.

The advantage that the opening portion 32 that forms in the pedestal 21 of terminal 20 and the sweep 31 between the support connecting section 30 provides is, can eliminate the possibility of any short circuit between another edge 29 of edge 22 of a terminal 20 and terminals of adjacent 20, and therefore, can reduce distance (or spacing) between terminals of adjacent 20 as much as possible.This is very effective for small size connector 10, and specifically, particularly for this connector with terminal 20 of greater number.Be used to produce shell 40 because resin material flows to cutting out section 32, therefore guaranteed higher integrality between terminal 20 and shell 40, this has prevented moving of terminal 20.

Because soldered ball 33 is welded to the outstanding from shell 40 of terminal 20 and its part, therefore can provide wherein connector 10 with the BGA type of a plurality of terminals of high-density arrangement.For matching connector 50 also is like this.Another selection is that the connector with this soldered ball 33 can be provided.In this situation, the support connecting section 30 of terminal 20 can be connected with being connected or welding tail with SMT from the outwards outstanding pin-type DIP weldering tail of shell 40.Welding tail afterwards can connect through blocking part with support 34.

Can see from above, because wherein dielectric enclosure is over-molded to pre-determine the connector configuration of the terminal that spacing is arranged side by side, therefore for terminal, do not need the interference fit step, and therefore, even also can realize manufacture process efficiently to connector with greater number terminal.In addition, because the border between terminal and shell does not produce the gap, therefore any possibility that moves up of solder flux or scaling powder not taking place in welding operation, thereby allows to keep this contact arm to any loss in cleaning and avoiding being electrically connected.

Claims

1. a connector (10) comprising:

Insulation crust (40), it comprises: have the first and second relative outer surfaces (40A, main part 40B); The a plurality of terminals that form in the shell main part receive cavity, each terminal receives cavity and extends through described housing main body part, arrive the first and second relative outer surface (40A of shell, 40B) and a plurality of conducting terminal (20), it is placed on described terminal and receives in the cavity, a single terminal (20) is placed in the single cavity, and each terminal (20) comprising:

Terminal bodies part (21), it receives horizontal-extending in the cavity at its terminal that is associated, terminal bodies part (21) has a plurality of independently edges, the first and second terminal holding members of placing along the first and second relative edges of described terminal bodies part (21), and in the terminal reception cavity that is associated, extend the contact portion (24) of leaving described terminal bodies part (21), by described shell (40) is molded on the described terminal (20), be embedded in two terminal holding members in the described shell (40) and make the boundary between terminal (20) and shell (40) not produce the gap, thus described terminal bodies part (21) is remained on the appropriate location in the described shell (40), it is characterized in that:

Described the first terminal holding member comprises the zone (23) that is folded back over along described terminal bodies part first edge on the described terminal bodies part (21), and the described second terminal holding member comprises the maintenance sections of placing along described terminal bodies part second edge, this maintenance sections from described terminal bodies part (21) bend to described terminal bodies part (21) at angle, described maintenance sections further is included in the opening (32) that forms along described terminal bodies part second edge in this maintenance sections, this opening (32) is filled with the material of making described shell (40), and is provided for thus described terminal (20) is buckled mode in described shell (40).

2. described connector as claimed in claim 1, wherein, described contact portion (24) comprises a pair of contact arm that is separated from each other (25,26), each contact arm (25,26) comprises the contact head (25a that bending connects, 26a), (25a 26a) engages on its opposite side with opposing connector terminal (60) contact head of described contact arm (25,26).

3. described connector as claimed in claim 1, wherein, described termination contact part (24) comprises the groove (27) of a pair of contact arm of the qualification that is placed on wherein (25,26), each contact arm (25,26) has the free end that separates with described terminal bodies part (21).

4. described connector as claimed in claim 2, wherein, described contact arm (25,26) does not have outstanding surface (40A) of crossing described shell (40).

5. described connector as claimed in claim 3, wherein, described contact arm free end comprise crooked contact-making surface (25a, 26a).

6. described connector as claimed in claim 1, wherein, (40A, 40B) centre isolate described terminal by described terminal bodies part (21) and receive cavity at relative first and second outer surfaces of described shell.

7. described connector as claimed in claim 6, wherein, described terminal bodies part (21) receives cavity with each terminal and is divided into the first and second sub-cavitys (41,42), the first sub-cavity (41) is to described shell first surface (40A) opening, and the described second sub-cavity (42) is to described shell second surface (40B) opening.

8. described connector as claimed in claim 7, wherein, the described second sub-cavity (42) comprise be placed on wherein and and described terminal bodies part (21) contacted soldered ball (33), this soldered ball (33) highlights from the described second sub-cavity (42) and crosses described shell second surface (40B).

9. described connector as claimed in claim 1, wherein, the described second terminal holding member extends to described shell second surface (40B).

10. described connector as claimed in claim 1, wherein, described maintenance sections is outstanding from described shell second surface (40B).

11. one kind is used for two circuit board interconnects electric coupler component together, this connector assembly comprises:

First and second connecting elements that engage one another (50,10);

First connecting element (50), it comprises: first connector shell (80) with the insulation on the first and second relative surfaces, be placed in first connector shell (80) and extend across a plurality of conductions contact pins (60) of the second surface of first connector shell, and soldered ball (62), described first connector shell (80) further comprises a plurality of recess that are formed in the described first connector shell first surface, contact pin (60) extends into this recess, and described soldered ball (62) is placed in the described recess on the described first connector shell first surface and contacts and extend across the described first connector shell first surface (80A) with the described pin (60) that contacts; And

Second connecting element (10), it comprises: have the first and second relative outer surfaces (40A, second connector shell (40) of insulation 40B); The a plurality of terminals that form in second connector shell (40) receive cavity, and each terminal receives the cavity extension, and (40A 40B) communicates by described second connector shell (40) and with described second connector shell, first and second outer surfaces fully; Be placed on a plurality of conducting terminals (20) in the described terminal reception cavity, a single terminal (20) is placed in the single cavity, it is characterized in that:

Each terminal (20) of described second connecting element comprising: receive horizontally extending main part (21) in the cavity at its terminal that is associated, this terminal bodies part (21) comprising: the first and second terminal holding members of placing along the first and second relative edges of described terminal bodies part (21), and in its terminal that is associated reception cavity part, extend the contact portion (24) of leaving described terminal bodies part (21), by described shell (40) is molded on the described terminal (20), two terminal holding members are embedded in the described shell (40), thus described terminal bodies part (21) is remained on the appropriate location in described second connector shell (40) and makes that boundary does not produce the gap between terminal (20) and second connector shell (40), described the first terminal holding member comprises the zone that is folded back over along described terminal bodies part first edge on the described terminal bodies part (21), and the described second terminal holding member comprises the maintenance sections of placing along described terminal bodies part (21) second edges, this maintenance sections bends to described terminal body from described terminal bodies part (21) and is divided into an angle, described second connecting element (10) further comprises a plurality of soldered balls (33), described a plurality of soldered ball (33) is placed on described terminal respectively and receives in the cavity, be welded to the corresponding second terminal bodies part, and extend across described second connector shell, second outer surface (40B); And

The contact pin (60) of described first connecting element extends into the described second connector shell terminal and receives cavity, and when described first and second connector shells (80, when 40) being combined together, the contact pin (60) of described first connecting element and the termination contact of described second connecting element part (24) engage, thereby with described soldered ball (62,33) be arranged in the opposite side away from each other of described first and second connector shells (80,40).

12. as connector assembly as described in the claim 11, wherein, each described second connecting element termination contact part (24) comprises a pair of contact arm that separates (25,26), each contact arm (25,26) (25a, 26a), the apparent surface who is used for contacting with described first connecting element pin (60) engages to have thereon composition surface of formation.

13. as connector assembly as described in the claim 12, wherein, the described terminal of described terminal bodies part (21) sealing receives cavity and further each described cavity is divided into first (41) and second (42) the sub-cavity, described termination contact part (24) extends into the described first sub-cavity (41) and has length less than described first sub-cavity (41) degree of depth, thus, described contact arm (25,26) does not extend across described second connector shell, first outer surface (40A).

14. as connector assembly as described in the claim 11, wherein, outstanding described second connector shell, second outer surface (40B) of crossing of the free end of the described second terminal holding member.

15. as connector assembly as described in the claim 11, wherein, each described second connecting element terminal keeps sections to be included in the opening (32) that forms along described terminal bodies part second edge in this maintenance sections, this opening (32) is filled with the material of making the described second connecting element shell (40), and is provided for thus described terminal (20) is buckled mode in described second connector shell (40).