CN2713674Y - Plane grating array electric connector - Google Patents

Abstract

The utility model relates to a plane grating array electric connector electronically connecting an electronic device with a circuit board, comprising an insulated base body and a plurality of conductive terminals arranged in the base body, wherein the base body is provided with terminal containing grooves which contain the conductive terminals inside correspondingly. Each conductive terminal comprises a middle part, an interference part extending downwardly from one end of the middle part to fit with conductive pores of the circuit board, and a contact part extending upwardly from the other end of the middle part to mechanically and electronically be in contact with the electronic device. wherein the contact part and the interference part are respectively deviated with the finite distances in the horizontal direction parallel with the fair-sized surface of the middle part and in the vertical direction of the fair-sized surface of the middle part, and when the contact part is cooperated with the electronic device, the stable electronic contact between the interference part and the conductive pores can be ensured.

Description

Electric connector of planar grid array

[technical field]

The utility model refers to a kind of electric connector of planar grid array that electrically connects integrated electronic device and wiring board especially about a kind of electric connector.

[background technology]

As everyone knows, electric connector is widely used in and electrically connects integrated electronic device (as: CPU) and wiring board (as: circuit board).Because electronic installation develops to the direction of high density, miniaturization, electronic device package is more and more closeer thereupon to the density of wiring board, that is the arrangement of the conducting terminal of electric connector is also more and more closeer, and requires electric connector terminal to have less impedance simultaneously.BGA (Ball GridArray, tin ball grid array) encapsulation technology is widely used because of overcoming above shortcoming.

Yet the BGA encapsulation technology is had relatively high expectations to the flatness of electric connector terminal and tin ball, and needs the accurately equipment of control welding and reflow temperature such as reflow stove.Therefore, the employing of BGA encapsulation technology strengthens the manufacturing cost of product.

Although PGA (Pin Grid Array, pin grid array) encapsulation technology can effectively reduce the cost of electronic device package to wiring board at present.But, because the electric connector of existing employing PGA technology generally is the conductive hole that the pin of terminal is placed wiring board, to electrically connect this electric connector and wiring board.Yet, cooperate owing to cooperating between this terminal and conductive hole be mainly mechanical interference.And terminal mainly is to be immobilizated in the insulating body of electric connector by means of the hangnail on its holding parts and the insulating body interference of electric connector.Therefore, when terminal is subjected to improper external force, or about, during the vibration test of the left and right sides, the mechanical engagement between terminal and conductive hole may be interfered, even causes contact point, line or face to change, thus influence signal of telecommunication transmission therebetween.

[content]

The purpose of this utility model is to provide a kind of electric connector of planar grid array, and it can effectively reduce its cost that is packaged into wiring board, but also can guarantee machinery stable between itself and wiring board and electrically connect.

The purpose of this utility model is achieved in that in order to the electric connector of planar grid array that electrically connects electronic installation and wiring board and comprises insulating body and be located at plurality of conductive terminals in this matrix.Wherein matrix offers terminal containing slot, accommodates terminal in wherein with correspondence.Terminal comprises pars intermedia, reaches in the docking section that the pars intermedia other end extends upward in the interference part that pars intermedia one end extends downwards to match with the conductive hole of wiring board.Wherein this docking section is included in board that the pars intermedia other end upwards vertically extends, links to each other with the lateral margin of this board and becomes with board sidepiece that the obtuse angle is provided with and the terminal cantilever of bending extension obliquely on sidepiece.Wherein the extreme higher position of cantilever on the matrix thickness direction is provided with contact site, electrically contacts to reach with electronic installation machinery.

The utility model has the following advantages than prior art: the terminal of electric connector of planar grid array is the conductive hole that directly places wiring board, and therefore, its manufacturing and assembly cost are relatively low.In addition, contact site and interference part in the horizontal direction parallel with the big surface of pars intermedia and with the direction of the big Surface Vertical of pars intermedia on be offset certain distance respectively, whereby when contact site cooperates with electronic installation, the moment that this cantilever and sidepiece produce can be strengthened the interference between the sidewall of terminal containing slot of pars intermedia and matrix, thereby make the pars intermedia stable position in the terminal containing slot of matrix, and then guarantee stable electrical cooperation the between interference part and conductive hole.

[description of drawings]

Fig. 1 is the stereogram of the terminal of the utility model electric connector of planar grid array.

Fig. 2 is the vertical view of the amplification of terminal among Fig. 1.

Fig. 3 be the utility model electric connector of planar grid array place wiring board and cooperate with electronic installation before partial sectional view.

Fig. 4 is the partial top view of the utility model electric connector of planar grid array.

Fig. 5 is the partial sectional view of another angle of matching with the conductive hole of wiring board of the interference part of the terminal of the utility model electric connector of planar grid array.

Fig. 6 is similar to Fig. 3, but electric connector of planar grid array matches with electronic installation.

Fig. 7 is the terminal of the utility model electric connector of planar grid array and force analysis figure after electronic installation cooperates.

Fig. 8 is the partial top view that matches with the conductive hole of wiring board in the interference part of another kind of terminal.

[embodiment]

See also Fig. 1, Fig. 2 and Fig. 3, the utility model electric connector of planar grid array is in order to electrically connecting electronic installation 40 and wiring board 50, and it comprises insulating body 20 and is contained in conducting terminal 30 in this matrix 20.

This matrix 20 is to be made by insulating material, and it is provided with the upper surface 22 of accepting electronic installation 40 and towards the lower surface 24 of wiring board 50.Offer terminal containing slot 26 in upper surface 22 and 24 of lower surfaces, to accommodate terminal 30 in wherein.This terminal containing slot 26 comprises that bigger square in space accommodated conduit 262 and accommodated conduit 262 with this and communicates and be positioned at the long and narrow fixing conduit 260 of accommodating conduit 262 1 sides.

Terminal 30 is to be stamped to form from a sheet of electric conducting material, and it comprises the tabular pars intermedia 32 in side in the fixing conduit 260 that is immobilizated in matrix 20, in docking section 36 that the upper end of pars intermedia 32 one extends upward and in the downward extended interference part 34 of the lower end of pars intermedia one.Wherein the relative both sides of pars intermedia 32 are provided with hangnail 320, with two relative inner surface interferences of the fixing conduit 260 of matrix 20.Interference part 34 be parallel with the big surface 322 of pars intermedia 32 and along should be big the vertical direction skew certain distances in surface 322, thereby in the interference part 34 be and 32 of pars intermedias form an arc-shaped transition portion 35.Certainly, as required, this transition part 35 also can be set as the shape of horizontal linearity or inclined linear.

Docking section 36 comprises extends a board 360, the sidepiece 362 that links to each other with the lateral margin of board 360 and the cantilever 364 that goes out of bending extension obliquely in the top of sidepiece 362 vertically upward from the upper end of pars intermedia 32.Wherein board 360 all is parallel with the bearing of trend straight up of pars intermedia 32 with sidepiece 362 and is tabular, and angle therebetween is obtuse angle a.Whereby, cantilever 364 can be along the diagonal diagonally extending of accommodating conduit 262, thereby obtains long cantilever 364, and then improves the Elastic Contact performance of terminal 30.The width of cantilever 364 extends upward on the direction along cantilever 364 and reduces gradually, increases suddenly again when adjacent end.Cantilever 364 is provided with contact site 365 in the most significant end of its vertical direction, electrically to contact with the conducting strip 42 of electronic installation 40.

See also Fig. 3, Fig. 4 and Fig. 5, when electric connector of planar grid array is assembled, terminal 30 inserts the terminal containing slot 26 from the top of matrix 20, borrows the hangnail 320 of pars intermedia 32 to interfere with two relative inner surfaces of fixing conduit 260, thereby terminal 30 is positioned in the terminal containing slot 26.After the assembling, cantilever 364 parts of terminal exceed the upper surface 22 of matrix 20, and 34 upper end face electrically contacts with the conducting strip 42 of electronic installation 40 so that contact site 365 is back to the interference part.Interference part 34 extends beyond lower surface 24, in the conductive hole 52 that inserts wiring board 50.22 the projection from electric connector of planar grid array in upper surface, the big surface 322 of pars intermedia 32 is parallel or vertical with the inner surface of accommodating conduit 262, cantilever 364 is to extend along the diagonal of accommodating conduit 262.Therefore, this terminal 30 can obtain long cantilever 364 length, thereby improves the elastic performance of terminal 30.In addition, the width in the middle of the cantilever 364 is little, and the width of contact site 365 and adjacent side portion 362 is bigger, so design, also can increase the elastic performance of cantilever 364, but also can increase the contact area of 42 of the upper end face of contact site 365 and conducting strips, improve electrical contact performance therebetween.

When electric connector of planar grid array was assembled to wiring board 50, inserted in the conductive hole 52 of wiring boards 50 interference part of terminal 30 34, borrows the outside of interference part 34 and the inner surface interference of conductive hole 52, thereby reach the electric connection of 50 of terminal 30 and wiring boards.When interference part 34 is inserted into conductive hole 52 fully, transition part 35 will be connected to conductive hole 52 around, thereby guarantee that further interference part 34 stable position are in conductive hole 52.Be inserted in the conductive hole 52 for the ease of interference part 34, the tip designs of interference part 34 becomes to dwindle gradually.Simultaneously, in order to strengthen the elastic performance of interference part 34, also can on interference part 34, offer through hole 340 (consulting Fig. 8).

See also Fig. 3 and Fig. 6, when using or test, electronic installation 40 is driven downwards, makes the conducting strip 42 of electronic installation 40 push the contact site 365 of terminals 30.In this extrusion process, strain will take place in the cantilever 364 and the sidepiece 362 of terminal 30, and the reaction force of generation is guaranteed the stable electric connection of 42 of contact site 365 and conducting strips.Because the preferable elastic performance of cantilever 364 tools, thereby help electrical cooperation of upper end face with 42 of the conducting strips of contact site 365.

See also Fig. 6 and Fig. 7, when electronic installation 40 places electric connector of planar grid array and since contact site 365 and interference part 34 in the horizontal direction parallel with the big surface 322 of pars intermedia 32 and with should be greatly be offset certain distance X, Y respectively on the surperficial 322 vertical directions.Therefore, the extruding force F vertically downward that acts on the contact site 365 produces certain moment with relative pars intermedia 32, and this moment will make that the interference between the inner surface of pars intermedia 32 and fixing conduit 260 is strengthened in direction all around.In addition, the transition part 35 of terminal 30 after being subjected to this extruding force F vertically downward, with more stably be resisted against conductive hole 52 around, whereby, guarantee that interference part 34 can stably cooperate with conductive hole 52 on above-below direction.In sum, borrow the shape and the structure of the utility model electric connector of planar grid array, when terminal 30 is subjected to improper external force, or up and down, when front and back and left and right sides vibration test, pars intermedia 32 can stably cooperate with conductive hole 52.Certainly, according to design of the present utility model, this moment also can directly act on the interference part 34, thereby guarantees 52 firm electrical cooperations of interference part 34 and conductive hole.

Claims (10)

1. electric connector of planar grid array, it comprises insulating body and is contained in conducting terminal in this matrix, wherein matrix is provided with, lower surface reaches on this, terminal containing slot between lower surface, terminal comprises pars intermedia, extend and exceed the contact site of upper surface and extend and exceed the interference part of lower surface from pars intermedia one end to match with the conductive hole of wiring board from the pars intermedia other end, it is characterized in that: when electric connector of planar grid array with after electronic installation cooperates, contact site and interference part in the horizontal direction parallel with the big surface of pars intermedia and with the direction of the big Surface Vertical of pars intermedia on be offset certain distance respectively.

2. electric connector of planar grid array as claimed in claim 1 is characterized in that: be provided with the transition part that is connected to the conductive hole edge between interference part and pars intermedia.

3. electric connector of planar grid array as claimed in claim 2 is characterized in that: the interference part is along being provided with the pars intermedia parallel offset on the direction on the big surface of vertical pars intermedia.

4. as claim 1,2 or 3 described electric connector of planar grid array, it is characterized in that: terminal comprises the board that upwards vertically extends from the top of pars intermedia, the extended sidepiece of the lateral margin of this board and from the terminal cantilever that extends obliquely of going up of sidepiece certainly.

5. electric connector of planar grid array as claimed in claim 4 is characterized in that: contact site is located at cantilever along on the extreme higher position of vertical upper surface direction, which is provided with back to the interference part upper end face electrically to cooperate with electronic installation.

6. electric connector of planar grid array as claimed in claim 5 is characterized in that: wherein board is all parallel with pars intermedia bearing of trend straight up with sidepiece, and angle therebetween is the obtuse angle.

7. electric connector of planar grid array as claimed in claim 5, it is characterized in that: the interference part is provided with through hole.

8. electric connector of planar grid array as claimed in claim 4 is characterized in that: terminal containing slot comprises a rectangular conduit and accommodate the long and narrow fixing conduit that conduit communicates with this of accommodating.

9. electric connector of planar grid array as claimed in claim 8 is characterized in that: the projection from electric connector of planar grid array in upper surface, cantilever are to extend along the diagonal of accommodating conduit.

10. electric connector of planar grid array as claimed in claim 9 is characterized in that: the width in the middle of the projection from electric connector of planar grid array in upper surface, cantilever is the width less than its two ends.

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