CN2554833Y

CN2554833Y - Socket connector

Info

Publication number: CN2554833Y
Application number: CN 02239168
Authority: CN
Inventors: 侯松沛; 陈翔斌
Original assignee: Hongteng Precision Technology Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongteng Precision Technology Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2002-06-19
Filing date: 2002-06-19
Publication date: 2003-06-04
Anticipated expiration: 2012-06-19

Abstract

The utility model discloses a socket connector that is used for carrying on a chip of a central processing unit (CPU) and used for making the chip of the central processing unit be connected to a circuit board, and comprises a substrate, a cover body that can be movably assembled on the substrate, a plurality of electric-conduction terminators arranged on the substrate, a driving device and a guidance positioning mechanism, wherein, the guidance positioning mechanism comprises a cylindrical guidance part and a guidance groove that has a first end part and a second end part and can be used for the movement of the guidance part, wherein, the first end part of the guidance groove is provided with an accommodating zone with the space larger than the guidance part, and a second end part is provided with a guidance zone with the space smaller than the accommodating zone of the first end part; when the cover body slides on the substrate, the guidance part is moved from the accommodating zone to the guidance zone, and supports the inner side of the guidance zone, thereby preventing the cover body from having a side-direction movement that is vertical to the sliding direction.

Description

Socket connector

[technical field]

The utility model is relevant a kind of socket connector, refers in particular to a kind ofly to be used to accept central processing unit (CPU) chip and it is engaged in zero-force connector for socket on the circuit board.

[background technology]

Existing zero-force connector for socket such as United States Patent (USP) the 5th, 722, No. 848, the 5th, 489, No. 218, the 6th, shown in 371, No. 786 and Chinese patent bulletin CN2256169Y number, also can be with reference to the accompanying drawing of second page of " zero insertion force stitch grid array electric connector " (ZIF PGA SOCKET) literary composition in " electric connector explanation " (the CONNECTOR SPECIFIER) of distribution in February nineteen ninety-five.This connector generally has pedestal, be located in the pedestal conducting terminal, group are located at lid and drive unit on the pedestal, wherein drive unit comprises a driving lever and links to each other with the driving lever one and be clamped in camshaft between pedestal and lid, driving lever can be handled camshaft, and rely on the off-centre rotation of camshaft and replace the upper strata lid, order about it with respect to the pedestal slippage, move thereby drive the pin that is plugged in the CPU on the lid, make itself and conducting terminal become connection status by disengaged position.In this process, excessively break away from pedestal for preventing that lid from moving upward, this connector also comprises an engaging support mechanism, as the 5th, 722, shown in the accompanying drawing 8 and 8A of No. 848 patent specifications.Yet the connector of this structure can only provide short slippage stroke, because the diameter of axle of the stroke of lid slippage and camshaft is relevant, if the slippage stroke is longer, certainly will increase the diameter of axle, the distance that lid is moved upward increases, thereby makes troubles for the fastening of pedestal and lid.

See also Fig. 1 and Fig. 2, shown in No. the 6th, 280,223, another prior art such as the United States Patent (USP), this connector includes pedestal, conducting terminal, lid and drive unit equally.Wherein drive unit comprises that a driving lever and is formed with the driving shaft of spire on it, offer an accepting hole that can match on the lid with spire, handle the driving shaft rotation by driving lever, the spire spiral is advanced, and promote lid with respect to base level slippage (as F direction among Fig. 1).The connector of this structure is compared to above-mentioned socket connector, and its lid slip is the stroke of length, and the undirected trend that goes up motion in the lid slipping.This connector also is provided with a guiding detent mechanism, is used to guide the slip of lid 80 to make it can not produce laterally offset perpendicular to glide direction, to guarantee the most reliable electric connection between central processing unit chip and this connector.This guiding detent mechanism comprises by the downward extended a pair of guidance part 81 and be opened in the long and narrow groove 71 of corresponding position on the pedestal 70 of lid 80 one, wherein the end of guidance part 81 bends inwards and is formed with hook part 82, can fasten with the corresponding shoulder 72 of pedestal 70.Yet; this guiding detent mechanism is on the effect and unreliable; during assembling; because the existence of above-mentioned hook part; can be very not difficult when making the guidance part group go into groove; usually can leave the nargin in the assembly; that is to say; the two side that the guidance part group is gone into behind the groove itself and groove all is formed with gap B; like this when spire drives the lid slippage; spire can make lid be subjected to frictional force on the side direction f (as shown in Figure 1) perpendicular to glide direction, thereby may cause lid to produce skew on the f direction.Industry also has employing to fill in iron plate with the motion of restriction lid on side direction in the B of gap, yet, can cause the madial wall and the friction of this iron plate generation face of its hook part 82 and groove 71 in the process that guidance part 81 moves like this in groove 71, to produce bigger force of sliding friction, and make lid need provide bigger actuating force to realize with respect to the slippage operation of pedestal 70.

In view of this, be necessary really the said structure of existing socket connector is improved to overcome defective of the prior art.

[summary of the invention]

Main purpose of the present utility model is to provide a kind of socket connector, its can avoid lid with respect to pedestal in laterally offset perpendicular to glide direction, guarantee to electrically connect accurately and reliably between the conducting terminal of central processing unit chip pin and this socket connector.

Another purpose of the present utility model is to provide a kind of socket connector with guiding detent mechanism, and this guiding detent mechanism is easy to assembly, and frictional resistance is less in operating process, thus handled easily.

For achieving the above object, the utility model adopts following technical scheme: a kind of socket connector, be used to accept central processing unit (CPU) chip and it is engaged in circuit board, it comprises pedestal, group is located at the lid on the pedestal slidably, be located at the plurality of conductive terminals in the pedestal, drive unit and guiding detent mechanism, wherein guide the guide channel that detent mechanism comprises cylindrical guidance part and has first and second end and can supply guidance part to move within it, wherein the first end of this guide channel is formed with the space accommodating area big than guidance part, and its second end is formed with the space guiding area little than the accommodating area of first end, when lid slides with respect to pedestal, guidance part moves to guiding area from accommodating area, and with guiding area inboard produce against, thereby the restriction lid can not produce perpendicular to the lateral sliding on the glide direction.

Compared with prior art, the guidance part of the utility model socket connector is cylindric, be used to accommodate this guidance part and comprise that for the guide channel of its slippage the space is than big first end of guidance part and the second end that just can ccontaining guidance part, by this structure, but the first end of guidance part self-conductance approaching channel organize easily into, and in the second end of guide channel, be limited the location, produce skew with respect to pedestal in side direction this moment to avoid lid perpendicular to glide direction; In addition, only there is the line friction in the process of guidance part slippage in guide channel, force of sliding friction is greatly reduced, thus handled easily.

[description of drawings]

Fig. 1 is the three-dimensional combination figure of existing socket connector.

Fig. 2 is the partial schematic sectional view of existing socket connector along Figure 1A-A line direction.

Fig. 3 is the three-dimensional exploded view of the utility model socket connector.

Fig. 4 is the three-dimensional exploded view at another visual angle of the utility model socket connector.

Fig. 5 is the three-dimensional combination figure of the utility model socket connector.

Fig. 6 is the upward view of the utility model socket connector when lid is positioned at primary importance.

Fig. 7 is the upward view of the utility model socket connector when lid is positioned at the second place.

Fig. 8 is the partial schematic sectional view of the utility model socket connector along Fig. 6 B-B line direction.

Fig. 9 is the partial schematic sectional view of the utility model socket connector along Fig. 7 C-C line direction.

Figure 10 is the upward view when lid is positioned at the second place among the utility model socket connector second embodiment.

Figure 11 is the upward view when lid is positioned at the second place among the utility model socket connector the 3rd embodiment.

Figure 12 is the upward view when lid is positioned at the second place among the utility model socket connector the 4th embodiment.

[embodiment]

See also Fig. 3 to shown in Figure 5, the utility model socket connector 1 is used to accept central processing unit (CPU) chip (not shown) and it is engaged in circuit board (not shown), so that the electric connection of chip pin and circuit board corresponding circuit to be provided, it comprise that pedestal 10, lid are connected on the pedestal 10 and can be with respect to the lid 20 of its slippage, be housed in plurality of conductive terminals 30, drive unit 40 and guiding detent mechanism 50 in the pedestal 10.

Wherein pedestal 10 comprises a body 11 and the protuberance 12 that is extended by body 11 1 ends.Offer on this body 11 be arranged plurality of terminals accepting hole 111 to be used to accommodate conducting terminal 30, one side of body 11 close protuberances 12 is provided with accepting groove 112 along the glide direction of lid 20, and the dual-side place that is positioned at body 11 is convexly equipped with out some long and narrow wedge shaped projection 113.

Lid 20 is installed on the upper surface 114 of pedestal 10, and can be by driving action slippage between the primary importance and the second place of drive unit 40, lid 20 be provided with can with terminal accommodation holes 111 corresponding some jacks 21 of pedestal 10, be used for pegging graft for the pin of the central processing unit chip thereon of planting.When lid 20 was positioned at primary importance, the pin of central processing unit did not contact with conducting terminal 30 as yet, and when lid 20 was positioned at the second place, pin and conducting terminal 30 formed and electrically connect.Accepting groove 112 places of the corresponding said base 10 of the upper surface of lid 20 are provided with a square groove 22, in order to a ccontaining sheet metal 23, and offer a notch 231 on this sheet metal 23.In addition, along being concaved with some recesses 24, can cooperate to avoid lid 20 to move upward in the dual-side of lid 20 with the wedge shaped projection 113 of said base 10.

Drive unit 40 comprise the driving lever 41 that can organize in the protuberance 12 that is located at pedestal 10 and with driving lever 41 vertical driving shafts 42 that link to each other.Wherein driving shaft 42 is provided with a spire 421, and its bottom can be housed in the accepting groove 112 of said base 10, and its top then can be housed in the notch 231 of above-mentioned sheet metal 23.When driving lever 41 rotated between opening and closure state, spire 421 was along with being rotated in of driving lever 41 done in the accepting groove 112 to rotate synchronously, and lid 20 then promotes linear moving between first and second position by the spiral of 421 pairs of sheet metals 23 of spire.

Please cooperate and consult Fig. 6 to Fig. 9, guiding detent mechanism 50 is located between lid 20 and the pedestal 10, it comprise lid 20 in the both sides of contiguous its groove 22 the extended a pair of cylindrical guidance part 51 of one straight down, and the body 11 of pedestal 10 runs through the guide channel 52 that body 11 is provided with in contiguous its accepting groove 112 both sides, and guidance part 51 can be housed in the guide channel 52 and move within it with the slippage of lid 20.Please cooperate and consult Fig. 6 and Fig. 7, this guide channel 52 comprises the rectangular opening 522 that contiguous protuberance 12 is the poroid first end of circular arc 521, the glide direction from first end 521 along lid 20 is extended and is formed at rectangular opening 522 terminal rounded poroid the second ends 5221 that this first and second end is the corresponding guidance part 51 of accommodating when lid 20 is positioned at first and second position respectively.Please cooperate and consult Fig. 8, the internal diameter of the circular hole of first end 521 makes first end form the bigger accommodating area in a space greater than the external diameter of guidance part 51, when lid 20 with pedestal 10 during in assembling, guidance part 51 can be organized the first end 521 into guide channel 52 smoothly.Please cooperate and consult Fig. 9, the internal diameter of the circular port of the second end 5221 is identical with the external diameter of guidance part 51, make the second end form the less guiding area in a space, when so lid 20 slides onto the second place, guidance part 51 fits tightly with the wall of the second end 5221, the situation of avoiding lid 20 to occur perpendicular to the lateral displacement of glide direction with respect to pedestal 10 bodies 11 at this moment, the jack 21 of lid 20 and the terminal accommodation holes 111 of pedestal 10 are accurately aligned, guarantee that the pin of central processing unit chip and the conducting terminal 30 of this socket connector 1 reliably electrically connect.In addition, because guidance part 51 is cylindric configuration, make in its sliding process in guide channel 52, there is wired friction in 5223 of the sidewalls of itself and guide channel 52, so, and with respect to the face friction that exists between existing guidance part and cell wall, force of sliding friction greatly reduces, thus handled easily.

The configuration of above-mentioned guide channel 52 is not limited in this, as shown in figure 10 among second embodiment of the utility model socket connector 1a, this guide channel 52a roughly is one inverted " protruding " font, that is disclosed among the structure of its rectangular opening 522a and the second end 5221a and first embodiment is identical, it only is the large rectangle hole that first end 521a is replaced into a horizontally set by the orthodrome hole among first embodiment, the accommodating area space that this large rectangle hole forms is bigger, be convenient to equally guidance part 51a successfully organize into.

Among the 3rd embodiment of the utility model socket connector 1b as shown in figure 11, this guide channel 52b roughly is drops, the structure of its first end 521b and the second end 5221b all with first embodiment in disclosed identical, the rectangular opening of guide channel 52 then is replaced into a trapezoidal hole 522b among first embodiment, so guidance part 51b is being slid onto by primary importance in the process of second place slippage, itself and guide channel 52b both sides cell wall 5223b are almost contactless, certainly do not have any frictional resistance yet and exist, avoided the negative effect that causes by frictional resistance fully.

Among the 4th embodiment of the utility model socket connector 1c as shown in figure 12, guide channel 52c is the isosceles trapezoid shape, and the less end of its size is the second end 5221c, and its larger-size end then is first end 521c.The effect and above-mentioned three identical that embodiment disclosed that have by this first end 521c accommodating area that forms and the guiding area that forms by the second end 5221c, and be connected by a trapezoidal hole 522c between first end 521c and the second end 5221c, as the trapezoidal hole 522b among the 3rd embodiment, it can avoid the negative effect that caused by frictional resistance equally.

Above-mentioned guiding detent mechanism also can be put upside down setting, and promptly guidance part is protruded out by the position of the contiguous accepting groove of the upper surface both sides of base body, and guide channel then is opened in the position, both sides of contiguous its groove on the lid.As for the concrete structure of guidance part and guide channel and effect all with first to fourth embodiment in disclosed identical, no longer describe in detail herein.

Claims

1. a socket connector is used to accept central processing unit (CPU) chip and it is engaged in circuit board, and it comprises pedestal, lid, plurality of conductive terminals and drive unit, and wherein pedestal offers the plurality of terminals accepting hole to accommodate conducting terminal; Lid is mounted on the pedestal and can slippage between the primary importance and the second place, which is provided with the some jacks corresponding with the pedestal terminal accommodation holes; Drive unit is installed between pedestal and the lid, borrows its rotation that the actuating force of lid slippage on pedestal can be provided; Further be provided with the guiding detent mechanism between pedestal and lid, it is characterized in that: this guiding detent mechanism comprises guidance part and guide channel, wherein guide channel is provided with first end and the second end, it forms the less guiding area of bigger accommodating area in space and space respectively, when lid with respect to pedestal between the primary importance and the second place during slippage, guidance part optionally produces with accommodating area and guiding area and cooperates, thereby with respect to pedestal certain laterally offset space is arranged when making lid be in primary importance, and when being in the second place, lid then is limited the location on perpendicular to glide direction.

2. socket connector as claimed in claim 1, it is characterized in that: guidance part is a pair of cylinder that extends of one straight down from lid bottom, it can form line with the sidewall of guide channel and contact, and guide channel runs through base body and the corresponding position of being located at described guidance part.

3. socket connector as claimed in claim 1, it is characterized in that: above-mentioned guidance part is for from the upper surface of the base body a pair of cylinder that extends of one straight up, it can form line with the sidewall of guide channel and contact, and above-mentioned guide channel runs through lid and the corresponding position of being located at described guidance part.

4. socket connector as claimed in claim 1 is characterized in that: when lid was positioned at primary importance, the pin and the conducting terminal of central processing unit chip were separated, and when lid was positioned at the second place, the pin of central processing unit chip and conducting terminal electrically connected.

5. as claim 2 or 3 described socket connectors, it is characterized in that: the accommodating area that described guide channel first end forms is shaped as an orthodrome hole, and the diameter of this circular hole is greater than the diameter of guide posts, and the guiding area that the second end of guide channel forms is shaped as the small circular holes that a diameter equals the guide posts external diameter, is connected by a rectangular opening between this small circular holes and the orthodrome hole.

6. as claim 2 or 3 described socket connectors, it is characterized in that: approximate one inverted " protruding " font that is of described guide channel, the accommodating area that is its first end is a large rectangle hole, and the guiding area of the second end is the circular hole that an internal diameter equals the guide posts external diameter, and is connected by a little rectangular opening between circular hole and the rectangular opening.

7. as claim 2 or 3 described socket connectors, it is characterized in that: the accommodating area that described guide channel first end forms is shaped as an orthodrome hole, and the diameter of this circular hole is greater than the diameter of guide posts, and the guiding area that the second end of guide channel forms is shaped as the small circular holes that a diameter equals the guide posts external diameter, is connected by a trapezoidal hole between this small circular holes and the orthodrome hole.

8. as claim 2 or 3 described socket connectors, it is characterized in that: described guide channel is the isosceles trapezoid shape, and its first end is a larger-size end, and the second end then is the less end of size.

9. socket connector as claimed in claim 1 is characterized in that: above-mentioned drive unit comprises that a driving lever reaches and the vertical driving shaft that links to each other of driving lever, and wherein driving shaft is provided with a spire.