CN2462575Y - Zero insertion force connector terminal - Google Patents

Abstract

The utility model relates to a terminal of a zero insertion force connector, comprising a single piece contact part, a fixing part, and terminal feet, wherein, the contact part is connected with the fixing part through a thin cervical region, which causes the contact part to produce deflection and torsion. Both sides of the fixing part are provided with a plurality of barbs for fixing the terminal in a terminal containing hole positioned on a base of a socket connector, and the terminal feet penetrate out of the containing hole and is electrically connected with a circuit board. The contact part is positioned in the terminal containing hole for butting with a pin foot of an electronic component inserted in the socket connector, wherein, the terminal contact part produces the deflection and the torsion when butted with the pin foot, the relative acting force between the terminal contact part and the pin foot is enlarged, and good fixing force and electrical contact can be obtained.

Description

The Zero insertion connector terminal

The utility model relates to a kind of Zero insertion connector terminal, refers to the Zero insertion connector terminal to dock with the stitch of CPU in a kind of CPU of being arranged on (CPU) socket connector especially.

The socket connector of being located on the circuit board is commonly used to accommodate electronic component, so that this electronic component can be electrically connected in circuit board.Work as electronic component, as have the electronic component of grid matrix formula stitch, when desire is inserted socket connector, realize that zero insertion force is very important.

In the prior art, be located on the socket connector and can be divided into two classes with the terminal that docks with the stitch of electronic component, one class is the two-piece type structure, by the stitch on the electronic component of two elastic sheet metal fixture grid matrix formulas, thereby realize being electrically connected and mechanical engagement between stitch and terminal, as the United States Patent (USP) of announcing respectively on May 25th, 1993 and on June 23rd, 1992 the 5th, 213, No. 530 and the 5th, 123, No. 855 disclose.Another kind of is one-piece construction, and its assistance by a sidewall of terminal accommodation holes comes the clamping stitch, reaches thus that terminal and stitch are electrically connected and the purpose of mechanical engagement, as in No. the 5th, 052,101, the United States Patent (USP) of bulletin on October 1st, 1991.By above-mentioned prior art as can be known, the one-piece construction terminal is littler than two-piece type structure terminal occupation space, so can increase the terminal density on the socket connector, this is consistent with present desired high-speed high frequency signal transmission.But since the one chip terminal only the chucking power that assistance produced of a sidewall by terminal accommodation holes come the clamping stitch, the elasticity deficiency of terminal in addition is so will cause the not enough and influence conductivity between the two of contact force between terminal and stitch.

In order to improve above-mentioned condition, the United States Patent (USP) the 5th that on February 6th, 1996 was announced, 489, disclosed a kind of one chip terminal structure for No. 218, it adopts a kind of terminal of high-tension, as shown in Figure 1, contact site 3 front ends of terminal have a guidance part 5, correctly enter guide rail and make resistance minimum when entering guide rail with guiding stitch 2.After stitch 2 entered guide rail, as shown in Figure 2, the contact site 3 by terminal reached the purpose that cooperates with sidewall 4 clampings of terminal accommodation holes 1, can improve the contact force deficiency between terminal and stitch and the situation of poor electric conductivity like this.Yet when terminal normotopia degree was relatively poor, this kind design will cause the contact force deficiency between terminal and stitch and the situation of poor electric conductivity.For another shown in Figure 3, when stitch 2 and terminal normotopia degree are relatively poor, terminal guidance part 5 may expose from the stitch hole (as shown in phantom in FIG.) of socket connector loam cake and make stitch 2 and terminal guidance part 5 interfere and push, thereby causes stitch 2 to be difficult for entering guide rail.

The purpose of this utility model is to provide a kind of Zero insertion connector terminal at the defective that above-mentioned prior art exists, so that stitch has enough contact forces and makes stitch have the zero insertion force space of maximum when cooperating with terminal.

The purpose of this utility model is achieved through the following technical solutions: the utility model comprises one chip contact site, holding parts and end pin, wherein is connected with thinner neck between contact site and holding parts, and makes contact site can take place to be offset and to reverse.Its holding parts both sides are provided with a plurality of hangnails, use and fix in the terminal accommodation holes of this terminal on the socket connector pedestal, and the end pin then passes this accepting hole and is electrically connected in circuit board.Its contact site then is positioned at terminal accommodation holes and docks with the stitch with the electronic component that is plugged into this socket connector.

Compared to prior art, the utility model since termination contact portion when dock, will take place to be offset and to reverse with stitch, so that relativity power increasing between the two and have preferable retain strength and good electric contact.In addition, because active force strengthens between the two, on the one hand can be with terminal design to the position far away of the stitch hole on socket connector to abdicate maximum zero insertion force space, even like this when terminal or stitch normotopia degree are not good, also are difficult for causing terminal to expose the stitch hole and interfere with stitch.Can not cause the decline of not enough and the electrically contacting property of contact force between terminal and stitch on the other hand because of terminal normotopia degree is not good yet.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1,2, the 3rd, the floor map that Zero insertion connector terminal of the prior art cooperates with stitch.

Fig. 4 is the stereogram of the utility model Zero insertion connector terminal.

Fig. 5,6, the 7th, the partial sectional view that the utility model Zero insertion connector terminal cooperates with stitch.

Fig. 8,9, the 10th, the continuous action schematic diagram that the utility model Zero insertion connector terminal cooperates with stitch.

By the stereogram of the utility model Zero insertion connector terminal shown in Figure 4 as can be seen, this bonder terminal 10 comprises one chip contact site 12, holding parts 16 and end pin 19, wherein 16 of contact site 12 and holding parts are connected with thinner neck 14, make contact site 12 relative holding parts 16 have certain elasticity and can be offset and reverse.Holding parts 16 both sides are provided with a plurality of hangnails 18, as shown in Figure 5, by hangnail 18 this terminal 10 are fixed in the terminal accommodation holes 22 on the socket connector pedestal 20.19 on pin of end extends downwards from holding parts 16 one, pass pedestal 20 terminal accommodation holes 22 the bottom and be electrically connected in circuit board (figure does not show).The contact site 12 of holding parts 16 upper ends is then kept somewhere in terminal accommodation holes 22, docks with the stitch 30 of the electronic component of pegging graft with socket connector institute desire.

Fig. 5 and Figure 8 shows that the graph of a relation that the utility model Zero insertion connector terminal 10 cooperates with stitch 30, wherein the contact site 12 of terminal 10 tilts to place terminal accommodation holes 22 substantial middle positions with the sidewall 24 of terminal accommodation holes 22 at an angle, and 26 of contact site 12 and sidewall 24 and adjacent walls thereof then constitute a space.When inserting in the socket connector pedestal 20, its stitch 30 promptly is inserted in this with zero insertion force when electronic component (figure does not show), moves to contact site 12 directions along the rectilinear direction that is parallel to sidewall 24 then.

Fig. 6 and Fig. 9 show the situation that the utility model Zero insertion connector terminal 10 and stitch 30 act on, when stitch 30 moves to ad-hoc location in terminal accommodation holes 22, to push with the contact site 12 preceding side contacts and the generation of terminal 10, the contact site 12 of terminal 10 will twist this moment, along with being moved further of stitch 30, the contact site 12 of terminal reverses the degree aggravation, and the neck 14 that will drive terminal 10 simultaneously is to pressurized direction deflection.When stitch 30 moved past the axle center of terminal 10 contact sites 12 and is moved further, the neck 14 of terminal 10 reduced because of elastic-restoring force makes deflection.When stitch 30 arrived at the final position, as Fig. 7 and shown in Figure 10, the degree of reversing of the contact site 12 of terminal 10 further strengthened, thereby the reaction force of neck 14 is strengthened and was made the contact force increasing of 30 of terminal 10 and stitch.

Fig. 7 and shown in Figure 10 for another example, for the utility model zero insertion force terminal 10 cooperates the situation of finishing with stitch 30, the contact force that this zero insertion force terminal 10 and stitch are 30 is made of two parts, a part combines to the chucking power of stitch 30 with the sidewall 24 of terminal accommodation holes 22 for termination contact portion 12, and another part is that the twisting resistance that stitch 30 is produced reverses in termination contact portion 12.The contact force of reviewing between terminal of the prior art and stitch but has only first's power, and general terminal will cause its side-play amount not enough when if the normotopia degree is not good, thereby makes the contact force deficiency between itself and stitch.And terminal design of the present utility model makes the contact force between itself and stitch increase a twisting resistance, so also can not obtain sufficient contact force when the normotopia degree is good.

Again as shown in Figure 8, because the utility model zero insertion force terminal 10 has the contact force of 30 of maximum and stitch, on the one hand can be with terminal design to the stitch hole on socket connector (figure does not show) 32 position far away to abdicate the zero insertion force space of maximum, even like this when terminal 10 or stitch 30 normotopia degree are not good, also are difficult for causing terminal 10 to expose stitch hole 32 and interfere with stitch 30.In addition, can not cause the decline of not enough and the electrically contacting property of terminal 10 and 30 contact forces of stitch because of terminal 10 normotopia degree are not good yet.

Claims (4)

1. Zero insertion connector terminal, be contained in the terminal accommodation holes on the socket connector pedestal, the stitch that is used for the electronic component of pegging graft with socket connector institute desire docks, and it is characterized in that: this Zero insertion connector terminal comprises: the one chip contact site; Holding parts is fixed this terminal in terminal accommodation holes; Neck connects this contact site and holding parts, makes contact site holding parts skew and reversing relatively; And the end pin, extend downwards and pass terminal accommodation holes and circuit board is electrically connected from holding parts.

2. Zero insertion connector terminal as claimed in claim 1 is characterized in that: the holding parts both sides of described terminal are provided with a plurality of hangnails.

3. Zero insertion connector terminal as claimed in claim 2 is characterized in that: the contact site of described terminal is to be inclined in the terminal accommodation holes with special angle.

4. Zero insertion connector terminal as claimed in claim 3, it is characterized in that: described special angle is enough to allow the stitch of electronic component insert terminal accommodation holes and when movable relatively, can contact with the one chip contact site of terminal, and cause the relative holding parts of contact site to reverse.

Images