CN1870353B - Electric connector - Google Patents

Abstract

The invention discloses an electrical connector for electrically connecting electronic components such as a camera module with a circuit board, which includes a shielding shell, an insulating body and a plurality of conductive terminals held in the insulating body. Each terminal includes a contact portion electrically contacting with the electronic component and a welding portion extending out of the insulating body and soldered to the circuit board. The shielding shell is assembled on the periphery of the electrical connector, and it is provided with several welding feet welded on the circuit board, wherein the welding feet extend between the welding parts of the terminal, and the distance between two adjacent welding feet is not greater than 2.5mm In this way, the internal signal of the electrical connector is not easy to be exposed and various external signals are not easy to interfere with the protection effect of internal signal transmission, and at the same time, the occurrence of crosstalk between terminals can be reduced, thereby greatly improving the signal transmission quality of the electrical connector.

Description

Electric connector

[technical field]

The present invention is relevant a kind of electric connector, especially a kind of electric connector that is used to accommodate electronic component such as camera module.

[background technology]

Along with the development of wireless communication technique, mobile phone, PDA and other electronic installation are in trend miniaturization development, and function is variation day by day also.For example set up camera-enabled etc.,, be used in these electronic installations realize that the electric connector of camera-enabled also must be improved accordingly along with people improve constantly for the requirement of this function each side.

Please refer to prior art laid-open U.S. Patents application on November 27 in 2003 discloses No. 2003/0218873.This patent application discloses a kind of electric connector that is used to accommodate electronic component such as camera module, and it comprises shielding casing and is assembled in conducting terminal in the shielding casing.Shielding casing comprises first, second, third, fourth shielding plate that is connected with each other and is the diapire that the horizontal stripe shape connects the first, the 3rd shielding plate root edge that is oppositely arranged.Four shielding plates are provided with some upwardly extending elastic tongue pieces, and tongue piece has inwardly outstanding protuberance and is used for elasticity and compresses electronic component.Wherein, first shielding plate is provided with a pair of symmetrically arranged square hole, and the 3rd shielding plate center is provided with a square hole.The insulating body center is the strip flat part, and the flat part both sides are provided with two row's accepting grooves and are used to accommodate conducting terminal.Conducting terminal comprise be bent into U-shaped and be contained in connecting portion in the accepting groove, from the upwardly extending elastic portion of connecting portion one end, be located at the free-ended contact site of this elastic portion and be positioned at the connecting portion other end and from accepting groove to the terminal weld part that extends the shielding casing diapire down.Electronic component comprises rectangular base, from the upwardly extending cylindrical body portion of base portion and be positioned at the base portion bottom surface and be provided with the bottom of conductive path.Be respectively equipped with projection and a projection of a pair of symmetry on the side of the pair of opposing of base portion, be used for holding with the square hole button of described shielding casing.During assembling, conducting terminal is assembled on the insulating body, and insulating body places in the shielding casing, and wherein the flat part of insulating body places on the diapire of shielding casing just.The conducting terminal weld part passes through accepting groove downwards and stretches out shielding casing, is used for welding with circuit board.Electronic component is installed in the shielding casing from top to bottom along the tongue piece of shielding plate, the protuberance of tongue piece closely is resisted against the base portion side of camera module, being located at projection on the base portion side and the square hole on the shielding plate detains mutually and holds the conductive path elasticity butt of conducting terminal contact site and base portion bottom surface.So one assembles electric connector.

Be exposed to outside the shielding casing because of described conducting terminal weld part passes through accepting groove downwards, make its electromagnetic interference that is vulnerable to outside various signals, influence the quality of signal transmission.Simultaneously owing to mobile phone, PDA and other electronic installation develop to miniaturization, electric connector takes up space and is subjected to very big restriction, correspondingly the distance between electric connector terminal also becomes more and more littler, and cross-talk also can influence the quality that signal transmits between terminal like this.

In addition, in many application scenarios, be subjected to the restriction in electronic installation space, electric connector adopts heavy board-like welding manner to be connected on the circuit board to save the space of electronic installation.This kind connector terminals weld part extends laterally out insulating body and shielding casing can adopt the surface soldered technology to be welded on the circuit board, this kind terminal weld part is compared the electromagnetic interference that terminal weld part that described U.S. Patent application discloses is more vulnerable to outer signals, also makes to be positioned at the electromagnetic interference that electronic component around this electric connector is vulnerable to this electric connector.

Therefore, necessary existing electric connector of accommodating electronic component such as camera module is improved, to satisfy people to the high-quality requirement of signal transmission.

[summary of the invention]

The object of the present invention is to provide a kind of electric connector of accommodating electronic component such as camera module, it can effectively prevent electromagnetic interference, improves the quality of signal transmission.

For achieving the above object, the present invention adopts following technical scheme: a kind of electric connector, it comprises the insulating body of shielding casing, plurality of conductive terminals and fixing terminal.Each terminal is equipped with the contact site that electrically contacts with electronic component and extends insulating body and is welded in weld part on the circuit board; the electromagnetic interference of outer signals is avoided in the periphery that this shielding casing is installed on this electric connector with the contact site of protection terminal; this shielding casing is provided with some welding foots that are welded on the circuit board; this welding foot extend between the weld part of terminal and the spacing of adjacent two welding foots neither greater than 2.5mm; so that be provided with the weld part of two terminals between adjacent two welding foots at most, the welding foot of described shielding casing and the weld part of described terminal all are higher than the contact site of described terminal on vertical direction.

Compared with prior art, electric connector of the present invention has following beneficial effect: the welding foot of the shielding casing of this electric connector extend between the weld part of terminal and the spacing of adjacent two welding foots neither greater than 2.5mm, so that be provided with the weld part of two terminals between adjacent two welding foots at most, and the welding foot of described shielding casing and the weld part of described terminal all are higher than the contact site of described terminal on vertical direction, do not expose and outside various signal can't disturb the protection effect of internal signal transmission with this internal signal of reaching electric connector, also can effectively reduce the generation of cross-talk phenomenon between terminal, thereby improve the quality of electric connector signal transmission.

[description of drawings]

Fig. 1 is the top perspective exploded view of electric connector of the present invention.

Fig. 2 is the three-dimensional exploded view of looking up of electric connector of the present invention

Fig. 3 is the profile along Fig. 1 line III-III.

Fig. 4 is the part three-dimensional combination figure of electric connector of the present invention shown in Figure 1, and wherein the camera module is unassembled goes on this electric connector.

Fig. 5 is the insulating body of electric connector of the present invention and the three-dimensional exploded view of conducting terminal.

Fig. 6 is the part three-dimensional combination figure of electric connector of the present invention, and wherein insulating body and conducting terminal cooperate with lower house.

Fig. 7 originally is the part three-dimensional combination figure of electric connector of the present invention, and wherein insulating body and conducting terminal cooperate with upper shell.

[embodiment]

See also Fig. 1 to shown in Figure 3, electric connector 100 of the present invention, be used to accommodate electronic component and it is electrically connected at circuit board 200, electronic component is a camera module 1 in the present embodiment, this electric connector 100 comprises shielding casing 2,3, insulating body 5 and some plurality of conductive terminals 4 that is immobilizated in the insulating body 5.

See also Fig. 4, shown in Figure 6, the shielding casing of this electric connector 100 comprises upper shell 2 and lower house 3, wherein upper shell 2 is by being separated from each other and the left side of symmetrical configuration, right metal frame 20 is formed, two metal frames 20 roughly are the ㄇ font and include three wall portions around forming host cavity 21. each metal frame 20 mutually, it is respectively antetheca 22, the sidewall 24 of rear wall 23 and connection antetheca 22 and rear wall 23, wherein each wall portion is provided with from its apical margin and bends to the inside and kink 25 that extends downwards and the shell fragment 26 that extends to the inside from the root edge continuation of kink 25, thereby described shell fragment 26 and camera module 1 elasticity butt are with camera module 1 stable being immobilizated in the electric connector 100. the antetheca 22 of each metal frame 20 and rear wall 23 have welding foot 221 and the retaining sheet 220 that extends from its root edge, wherein welding foot 221 is along extending and be welded in the upper surface of circuit board 200 with the perpendicular direction of antetheca 22 and rear wall 23,220 of retaining sheets extend downwards and its both sides, lower end are provided with hangnail (not label). and the sidewall 24 of each metal frame 20 is provided with some welding foots 240, and it extends the upper surface that is used to be welded in circuit board 200 from its sidewall 24 root edges.

See also Fig. 2, Fig. 6, shown in Figure 7, the lower house 3 of shielding casing has a host cavity 30, and it is centered on together with the upwardly extending antetheca 33 of four ora terminalis, rear wall 34 and pair of sidewalls 32 by diapire 31 by dull and stereotyped diapire 31 and forms.Diapire 31 is formed with four retaining sheets 310 in tearing with antetheca 33, rear wall 34 junctions, and when insulating body 5 cooperated with lower house 3, described four retaining sheets 310 were accommodated and are immobilizated in four fixing grooves 501 being located at insulating body 5 corresponding positions.Antetheca 33 and rear wall 34 are respectively equipped with the welding foot 330,340 that is welded in circuit board, and wherein antetheca 33 also is provided with a kerf 331, and it is used to hold the part of the positioning rib 12 of camera module 1.Two side 32 structures are identical, and the apical margin of each sidewall 32 is provided with the depression of 320 of several projections 320, two adjacent projections and aligns with terminal 4 weld parts 44.The host cavity 21 of wherein said upper shell 2 communicates with the host cavity 30 of described lower house 3 and forms a receiving space, and described insulating body is contained in the bottom of receiving space, and camera module 1 is contained in the top of receiving space.

See also Fig. 4, Fig. 5, shown in Figure 6, insulating body 5 comprises bottom 50 and is higher than bottom 50 and the sidewall 51 that is oppositely arranged, and this insulating body 5 also is provided with from the bottom the 50 two row's terminal conduits 52 that are communicated to sidepiece 51 upper surfaces.Plurality of conductive terminals 4 is immobilizated in the terminal conduit 52 of described insulating body, wherein each conducting terminal 4 comprises and terminal conduit 52 holding parts 43 of fixing mutually, the elastic bend part 42 that extends forward from holding parts 43, contact site 41 that own elasticity bend 42 extends back and the weld part 44 that extends back from holding parts 43, after terminal 2 is immobilizated in insulating body 5, the contact site 41 of terminal protrudes in the upper surface of insulating body 5 bottoms 50, the weld part 44 of terminal extends the sidepiece 51 of insulating body and is welded on the circuit board with surface mounting technology and (sees also first figure), and adjacent weld part 44 is offset round about.The weld part 44 of described terminal terminal is positioned at the top of contact site 41, is welded on the circuit board 200 and make this electric connector 100 can sink the plate mode.

See also Fig. 3, shown in Figure 4, camera module 1 comprises the pedestal 10 that roughly is rectangle, be positioned at the column 11 of pedestal 10 tops and from the extended positioning rib 12 of the front end face of pedestal 10 and column 11.The bottom surface of pedestal 10 is provided with the contact site 44 corresponding some conductive pads 13 with terminal 4, when camera module 1 is assembled into this electric connector 100, the contact site 44 of terminal 4 electrically conducts with conductive pad 13, thereby the signal of realizing 200 of camera module 1 and circuit boards transmits.

With top is that the structure of each part of electric connector is described in detail, will the matching relationship between each part be described with the lower part.

See also Fig. 5, at first conducting terminal 4 is installed on the upper surface that insulating body 5 elastic contact parts 41 interior and terminal 4 are exposed to insulating body bottom 50 respectively from the left and right sides, the weld part 44 of terminal 4 extends outside the insulating body both sides 51 simultaneously.

See also Fig. 2, Fig. 6, Fig. 7, insulating body 5 and plurality of conductive terminals 4 are assembled in the lower house 3 of shielding casing, finish the assembling of lower house 3 and insulating body 5 by four retaining sheets 310 of lower house 3 and four fixing groove 501 interference engagement of insulating body 5 corresponding positions, this moment, weld part 44 sidewall 32 apical margins of crossing lower house 3 of terminal 4 extended outside the lower house 3. and the upper shell 2 with shielding casing cooperates with insulating body 5 then, the retaining sheet 220 of upper shell 2 is immobilizated in by the hangnail of its lower end in four holding slots 502 of both sides, front and back of bottom 50, and the top of retaining sheet 220 by lower house 3 before, rear wall 33,34 seize on both sides by the arms, upper shell 2 and lower house 3 are with terminal 4 most of encirclements like this, playing the effect of anti-outer signals electromagnetic interference preferably. 24 extended welding foots 240 extend 44 of terminal weld parts to upper shell 2 from the two side, wherein welding foot 240 adjacent weld parts 44 are offset to the direction away from welding foot 240 respectively, all welding foots 240 and weld part 44 all are welded on the circuit board 200 with roughly the same interval and (consult Fig. 4), and the spacing of adjacent welding foot 240 is neither greater than 2.5mm, the internal signal of reaching electric connector does not according to this expose and outside various signal can't disturb the protection effect of internal signal transmission, can prevent simultaneously the generation of 4 cross-talk phenomenons of terminal, even this camera module 1 transmission of high-rate signal still can guarantee the quality of signal transmission. in the present embodiment, the welding foot 240 of one upper shell 2 is set every two terminal welding foots 44, the invention is not restricted to this kind mode, terminal welding foot 4 can also be provided with one by one at interval with the welding foot 240 of upper shell 2 or welding foot 240 is located on the lower house 3 or the like alternate manner.

See also Fig. 4, adopt heavy board-like assembling mode to be welded on the circuit board 200 the above-mentioned electric connector that assembles, lower house 3 passes circuit board 200 and is welded on the circuit board 200 by welding foot 330, upper shell 2 and plurality of terminals 4 are also by welding foot 221,240 and terminal weld part 44 adopt the surface soldered technology to be welded on the circuit board 200, it is less to adopt above-mentioned welding manner to make that electric connector 100 takies the space of electronic installation, in addition, adopt this kind matching relationship can also pass through the simple upper shell 2 of adjusting, the length of lower house 3 and terminal 4 reaches the purpose that this electric connector 100 holds the camera module 1 of differing heights.Welding foot 330,221,240 more can the contacts with a plurality of ground connection solder joints on the circuit board of shielding casing, so effective reduction impedance improves ground connection efficient greatly, thereby increases the effect of the anti-electromagnetic interference of this shielding casing.

See also Fig. 1, Fig. 3, Fig. 4, as mentioned above, upper shell 2 is by a pair of symmetrical configuration and roughly be ㄇ font two metal frames 20 and surround, this kind structure makes upper shell 2 have stronger elasticity, upper shell 2 forms the gap, location 28 of matching with the positioning rib 12 of camera module 1 in antetheca 22 joints of two metal frames 20, be provided with 1 guiding of guiding camera module on it and be assembled into guide ramp (not label) in this electric connector 100, positioning rib 12 plays the effect of locating fool proof with cooperating of gap 28, location.Thereby some shell fragments 26 of being located on the upper shell 2 firmly are immobilizated in camera module 1 in this electric connector 100 with camera module 1 elasticity butt respectively, and the conductive pad 13 of camera module 1 transmits with the signal that the contact site of terminal 4 41 electrically contacts 200 of realization camera module 1 and circuit boards.

Claims (9)

1. An electrical connector, used to connect electronic components to a circuit board, comprising an insulating body, a number of terminals held on the insulating body and a shielding case assembled on the periphery of the insulating body, the terminals have a The contact part of the component electrical contact and the welding part that can be welded on the circuit board are characterized in that: the shielding shell is provided with a number of welding feet that can be welded on the circuit board, and the welding feet extend between the welding parts of the terminal and The distance between two adjacent welding feet is not greater than 2.5mm, so that there are at most two welding parts of terminals between two adjacent welding feet, and the welding feet of the shielding shell and the welding parts of the terminals are vertically The direction is higher than the contact portion of the terminal. 2. The electrical connector according to claim 1, wherein the shielding housing comprises an upper housing and a lower housing, the upper housing and the lower housing are both provided with receiving cavities, and the two receiving cavities communicate together to form a In the accommodation space, the insulating body is accommodated in the lower part of the accommodation space, and the upper part of the accommodation space can accommodate electronic components. 3. The electrical connector according to claim 2, wherein the soldering pin is formed by extending from the upper housing. 4. The electrical connector according to claim 2, characterized in that: the upper housing comprises two substantially ㄇ-shaped metal frames, the receiving cavity of the upper housing is surrounded by two metal frames, each metal The frame includes a front wall, a rear wall, a side wall and an elastic piece extending from the top edge of the frame into the receiving cavity and elastically abutting against the electronic components. 5 . The electrical connector as claimed in claim 4 , wherein a positioning gap is formed at the junction of the front walls of the two metal frames, which is matched with the positioning rib extending from the front end of the electronic component. 6 . 6. The electrical connector as claimed in claim 4, wherein the welding pins extend from the sidewall of each metal frame. 7. The electrical connector according to claim 2, wherein the receiving chamber of the lower housing is composed of the bottom wall of the lower housing, a front wall extending upward from the bottom wall, a rear wall, and a pair of opposite side walls. Surrounding, the welding part of the terminal extends out of the side wall of the insulating body and the lower case. 8. The electrical connector according to claim 7, characterized in that: the bottom wall of the lower housing is torn at the intersection with the front wall and the rear wall to form a holding piece, which is connected to the holding slot at the corresponding position of the insulating body interference fit. 9. The electrical connector as claimed in claim 1, wherein the soldering portions of the terminals adjacent to the soldering feet deviate in directions away from the soldering feet.

Images