CN2567831Y

CN2567831Y - Surface contact type zero insertion force connector

Info

Publication number: CN2567831Y
Application number: CN 02247752
Authority: CN
Inventors: 古月珠
Original assignee: Jihong Electronic Co ltd
Current assignee: Jihong Electronic Co ltd
Priority date: 2002-08-27
Filing date: 2002-08-27
Publication date: 2003-08-20
Anticipated expiration: 2012-08-27

Abstract

The utility model relates to a surface contact type zero insertion force connector which comprises a base which is provided with a plurality of connecting terminals with a matrix form, an upper cover which can relatively cover the base and can do horizontal displacement, and a brake rod which is arranged between the base and relative one end of the upper cover and is used for controlling the displacement of the upper cover. The utility model is characterized in that the bottom end of each of the connecting terminals is bent, forming a contact part. When the connector is arranged on a corresponding line contact on a mainboard and is slightly pressed, the contact part of each of the connecting terminals can contact a corresponding welding pad on the mainboard in a surface contact way. After hot melt connection is carried out, the connector can be reliably and steadily fixed to the mainboard.

Description

The surface contact Zero insertion connector

Technical field

The utility model is about a kind of surface contact Zero insertion connector, especially refer to that a kind of fragile plating perforation of stitch connector and tin ball formula connector of can effectively solving may the loose contact problem, and take the surperficial way of contact to be mounted to Zero insertion connector on the motherboard.

Background technology

The Pentium series CPU (CPU) of producing with Intel (INTEL) is an example, except that Pentium II, remaining Pentium CPU all is to see through Zero insertion connector (ZIF) 70 shown in Figure 4 to be mounted on the motherboard, and this Zero insertion connector 70 includes:

One base 70 is laid with a plurality of splicing ears 701 as shown in Figure 5 with matrix form on it, for the corresponding perforation 81 that is plugged in correspondence on the motherboard 80, after welding each stitch terminal 701 in motherboard 80 back sides, promptly finishes installation;

One loam cake 71, it is covered on the aforementioned base 70 relatively, and can do horizontal displacement on base 70; Loam cake 71 also is formed with plural jack 711 with matrix form and still sees also shown in Figure 4 again, each jack 711 is relative splicing ears 701 on the corresponding base 70 of difference, it is not before the displacement, jack 711 be with base 70 on splicing ear 701 stagger, when the loam cake 71 of waiting was done horizontal displacement to the second place by primary importance, jack 711 suitable correspondences were positioned at splicing ear 701 tops; And CPU promptly is inserted in the jack 711 on the loam cake 71 with its stitch, when loam cake 71 is positioned at primary importance, the stitch of CPU does not contact with splicing ear 701, the loam cake 71 of waiting is passed to the second place, the stitch of CPU promptly with the last end in contact of splicing ear 701, be electrically connected and constitute;

One brake bar 72, be located at the relative same end of base 70 and loam cake 71 between, in order to the horizontal displacement of control loam cake 71;

The above person is the basic framework and the operation principle of Zero insertion connector, because Zero insertion connector (ZIF) is a known tip assemblies, therefore also non-this place of its unitary construction desires to emphasize, holds the mutual pass that is not described in further detail 72 of base 70, loam cake 71 and brake bars to be and detail structure.

And the discussion of desire proposition herein is that Zero insertion connector is in order to be mounted to the relative configurations on the motherboard.See also shown in Figure 5, the splicing ear 701 of typical Zero insertion connector is stitch array (PGA) form, that is splicing ear 701 is the perforation 81 that directly are inserted into process electroplating processes on the motherboard 80, because splicing ear 701 is to be the stitch form, so it is comparatively sharply sharp, the very easy electrodeposited coating that pierces through destruction perforation 81 in assembling process, and the anxiety of influential motherboard 80 electrical characteristics.

The splicing ear 701 that also has a kind of Zero insertion connector is to adopt ball lattice arrays (BGA) form, sees also shown in Figure 6.This kind is with tin ball and motherboard 80 surperficial corresponding weld pad ways of connecting, though the anxiety of needleless feet wound and perforation, but it is many and contact area is little because of tin pommel, when motherboard 80 surface flatnesses are not satisfactory, minority tin ball promptly may occur and fail the phenomenon that contacts really with weld pad, so ball lattice array form Zero insertion connector is still not desirable to the greatest extent with respect to the installation constitution on the motherboard.

From the above,, when it is bonded on the motherboard, exists respectively and may damage problems such as circuit and loose contact no matter existing Zero insertion connector is stitch array or ball lattice array form, thus need to be further reviewed, and seek feasible solution.

Summary of the invention

The utility model main purpose is providing a kind of surface contact Zero insertion connector, and it can effectively solve the fragile perforation circuit of stitch array type connector and tin ball array type connector may the loose contact problem.

For reaching the major technique means that aforementioned purpose takes is to make aforementioned Zero insertion connector comprise:

One base is to be provided with plural splicing ear with matrix form;

One loam cake is to be covered on relatively on the base also can do horizontal displacement;

One brake bar is L-shaped, and its horizontal ends is to be folded the establishing of the relative end with loam cake of base, uses the control loam cake and does horizontal displacement; Wherein:

Each splicing ear is in the form of sheets, and its bottom also is bent to form a contact site, and corresponds respectively to the line contacts of motherboard surface predeterminated position;

By this, when connector places on the motherboard on the corresponding line contacts, and slightly give and exerting pressure, the contact site of each splicing ear be with " face " way of contact contacts with corresponding pad on the motherboard, after heat welded, can make certain and stable being fixed on the motherboard of connector; Can solve the problem of stitch damage perforation circuit and the loose contact of tin ball simultaneously with this design.

The lower semisection of aforementioned splicing ear has a gradient.

Description of drawings

Now in conjunction with the accompanying drawings, describe the utility model in detail.

One graphic part:

Fig. 1: be outside drawing of the present utility model, end angle;

Fig. 2: be local outside drawing, the end angle of amplifying of the present utility model;

Fig. 3: be the local combination schematic diagram that amplifies of the present utility model;

Fig. 4: be the outside drawing of commonly using Zero insertion connector;

Fig. 5: the combination schematic diagram that is stitch array type Zero insertion connector;

Fig. 6: the combination schematic diagram that is ball lattice array type Zero insertion connector.

Two figure number parts:

10 bases, 101 terminal grooves

102 blocks, 11 loam cakes

12 brake bars, 20 splicing ears

21 contact sites, 30 motherboards

70 bases, 701 splicing ears

71 loam cakes, 711 jacks

72 brake bars, 80 motherboards

81 perforation

Embodiment

Relevant structure division of the present utility model at first sees also shown in Figure 1ly, and it includes:

One base 10 is formed with the terminal groove 101 that plural number is arranged with matrix form on it, be arranged with a splicing ear 20 in each terminal groove 101, please cooperate consult shown in Figure 2;

One loam cake 11, it is covered on the aforementioned base 10 relatively, and can do horizontal displacement on base 10; Loam cake 11 also is formed with plural jack with matrix form this is not shown in the figures again, and each jack is a relative splicing ear 20 on the corresponding base 10 respectively;

One brake bar 12 is L-shaped, and its horizontal ends is to be hubbed between the relative same end of base 10 and loam cake 11, and when vertical end was pulled, its horizontal ends will be passed loam cake 11 made it produce horizontal displacement action;

Aforementioned base 10, loam cake 11 are basic frameworks of Zero insertion connector with brake bar 12, because the syntagmatic and the non-main target of the present utility model of the space kenel place of its inter-module hold not being described in further detail its structure.

The utility model principal character is again: the plural splicing ear 20 on the aforementioned base 10, its citation form and traditional stitch terminal are roughly the same, it is in the form of sheets that difference is in the lower semisection of splicing ear 20, it has suitable gradient, and its bottom is bent to form the contact site 21 of the suitable radian of a tool, and corresponding to each weld pad of set line contacts on the motherboard relative position.

Moreover the both sides, front and back of base 10 bottom surfaces are formed with an outstanding block 102 respectively, and block 102 thickness perseverances pass the height of base 10 bottom surfaces less than splicing ear 20.

To help Zero insertion connector to contact with aforesaid splicing ear 20 with the certain of each weld pad on the motherboard.Its concrete compound mode is detailed as described below:

As shown in Figure 3, when connector is positioned on the motherboard 30, plural splicing ear 20 on its base 10 is with the corresponding weld pad contact on the contact site 21 of arc and the motherboard 30, the area of contact this moment only terminates in the limited arc limit of contact site 21 outside end faces, wait to connector slightly give exert pressure after, contact site 21 will strengthen with the raising of pressure gradually with the contact area of weld pad, make between contact site 21 and weld pad and constitute one " face " contact, thus, not only can strengthen contact area, simultaneously also not because of the not good phenomenon that loose contact occurs of motherboard 30 surface flatnesses.And aforementioned connector can make connector positively be combined on the motherboard 30 again after heat welded.

And when reality is used,, causing splicing ear 20 distortion or short circuit mutually for preventing that connector from excessively exerted pressure, the block 102 of two side positions before and after aforementioned base 10 bottom surfaces can provide one to press down the degree restriction, excessively presses down to prevent connector.

As shown in the above description, connector of the present utility model be the splicing ear that is formed with arc-shaped contact part with the bottom with motherboard on corresponding weld pad constitute " face " contact, can make each splicing ear of connector positively be electrically connected corresponding pad on the motherboard by this, specifically solve stitch array type connector easy damaged perforation circuit and ball lattice array type connector and be subject to the influence of motherboard surface flatness and shortcomings such as loose contact.

Claims

1, a kind of surface contact Zero insertion connector, it includes:

One base is to be provided with plural splicing ear with matrix form;

One brake bar is L-shaped, and its horizontal ends is to be folded the establishing of the relative end with loam cake of base, uses the control loam cake and does horizontal displacement;

It is characterized in that: wherein, each splicing ear is in the form of sheets, and its bottom is bent to form a contact site with suitable radian.

2, surface contact Zero insertion connector according to claim 1 is characterized in that: the both sides, front and back of this base end face are formed with an outstanding block respectively, and block thickness perseverance passes the height of base end face less than splicing ear.

3, surface contact Zero insertion connector according to claim 1 and 2, it is characterized in that: the lower semisection of this splicing ear has a gradient.