JP3913323B2 - Socket for electrical parts - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention detachably holds one electrical component such as a semiconductor device (hereinafter referred to as an “IC package”), and electrically connects the one electrical component to the other electrical component such as a printed wiring board. The present invention relates to a socket for electrical parts.
[0002]
[Prior art]
Conventionally, as this type of “socket for electrical parts”, there is an IC socket for achieving an electrical connection between an IC package as “one electrical part” and a printed wiring board as “the other electrical part”.
[0003]
In this IC socket, a plurality of conductive and flexible contact pins are arranged along the vertical direction on the socket body side, and by this contact pin, the IC package placed on the socket body is arranged. The electrodes are electrically connected to the electrodes of the printed wiring board corresponding to the electrodes so as to achieve electrical connection therebetween.
[0004]
In this case, in order to achieve contact stability with the electrode, the contact pin is in an elastically deformed state so as to be brought into contact with the electrode at a predetermined pressure without being too strong and not too weak.
[0005]
[Problems to be solved by the invention]
However, in such a conventional one, the upper and lower end contact portions of the contact pins that contact the IC package or the printed wiring board are displaced up and down within a narrow slit. Since only the intermediate portion between the two is bent and deformed, the amount of vertical displacement of the contact portion is ensured. Therefore, if the contact portion is displaced vertically by a predetermined amount, the contact pin becomes long. If the contact pins are long, the electrical parts to be connected cannot handle a high processing speed of about several hundred MHz.
[0006]
Further, since the contact portion is merely displaced up and down while being guided by the thin slit, it is difficult to exert the wiping effect.
[0007]
Therefore, the present invention provides a socket for an electrical component that can secure the displacement of the contact portion without requiring a contact pin so long, can handle electrical components having a high processing speed, and can also exhibit a wiping effect. The challenge is to do.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, an invention according to claim 1 is a socket for an electrical component which includes a contact pin having flexibility and electrically connects one electrical component to the other electrical component. The socket body is formed with a locking portion that locks both ends of the contact pin, and an upper end contact portion that contacts an electrode of the one electrical component is formed at the upper end portion of the contact pin. The lower end portion of the contact pin is formed with a lower end contact portion that contacts the electrode of the other electrical component, and an upper engagement portion and a lower engagement portion that are engaged with the engagement portion, When the upper end contact portion and the lower end contact portion are pressed against the electrical components, both or at least one of the upper end contact portion side and the lower end contact portion side rotate around the locking portion. , All the contact pins There is characterized in that the socket for electrical parts that is set to deformed like an arch.
[0009]
According to the second aspect of the present invention, an upper plate is disposed on the upper side of the socket main body, and a flexible contact pin is vertically disposed between the upper plate and the bottom surface of the socket main body. The one electrical component is placed on the upper side of the upper plate, and the other electrical component is placed on the lower side of the bottom surface portion. An electrical component socket in which one electrical component and the other electrical component are electrically connected to each other, wherein the upper plate and the bottom surface portion are formed with locking projections, while the contact An upper end contact portion that contacts the electrode of the one electrical component is formed at the upper end portion of the pin, and a lower end contact portion that contacts the electrode of the other electrical component is formed at the lower end portion of the contact pin. And both engaging projections An upper locking portion and a lower locking portion are formed, and the upper end contact portion and the lower end contact portion are press-contacted with the respective electrical components, so that both the upper end contact portion side and the lower end contact portion side or at least Either one of them is a socket for an electrical component that is set so that the whole contact pin is bent and deformed in a bow shape by rotating around one of the locking projections.
[0010]
According to a third aspect of the present invention, a plurality of adapters are vertically stacked in the recess of the socket body, and flexible contact pins are arranged along the vertical direction on the adapters. One electrical component is placed on the upper side of each adapter, and the other electrical component is placed on the lower side of each adapter, so that the one electrical component is connected via the contact pin. An electrical component socket in which a component and the other electrical component are electrically connected, wherein an upper end and a lower portion of the adapter are formed with locking projections, while an upper end of the contact pin The upper end contact portion that contacts the electrode of the one electrical component is formed on the portion, and the lower end contact portion that contacts the electrode of the other electrical component is formed on the lower end portion of the contact pin. Engage with both locking projections An upper locking portion and a lower locking portion are formed, and the upper end contact portion and the lower end contact portion are pressed against the electrical component, so that both or at least one of the upper end contact portion side and the lower end contact portion side. One of them is a socket for an electrical component in which the entire contact pin is bent and deformed like a bow by rotating so that one of the contact projections is the center.
[0011]
According to a fourth aspect of the invention, in addition to the configuration of the third aspect, a fitting means for fitting each other is provided between the adapters.
[0012]
According to a fifth aspect of the present invention, in addition to the configuration of the third or fourth aspect, the upper locking portion and the lower locking portion are elongated holes into which the locking protrusions are inserted. To do.
[0013]
According to a sixth aspect of the present invention, in addition to the configuration according to any one of the first to fifth aspects, the contact points of the upper and lower contact portions of the contact pin with the electrical components, The intermediate portion between the contact portions is offset in plan view.
[0014]
According to a seventh aspect of the present invention, in addition to the structure according to any one of the first to sixth aspects, the contact pin has a state in which the upper end contact portion and the lower end contact portion are not pressed against the electrode. It is characterized by a bow.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
[0016]
Embodiment 1 of the Invention
1 and 2 show a first embodiment of the present invention.
[0017]
First, the configuration will be described. Reference numeral 11 in FIG. 1 denotes an IC socket as “socket for electrical parts”. This IC socket 11 is used for performing a performance test of the IC package 12 as “one electrical part”. This IC package 12 is intended to be electrically connected to a printed wiring board 13 of a measuring instrument (tester) as “the other electrical component”.
[0018]
The IC package 12 has a quadrangular shape, and a plurality of electrodes (not shown) are formed on the lower surface.
[0019]
On the other hand, the IC socket 11 is roughly attached to the socket body 15 by fitting the upper plate 16, and a contact pin 17 is disposed between the upper plate 16 and the socket body 15. A cover 18 is rotatably attached to the socket body 15.
[0020]
Specifically, a recess 15a is formed in the socket body 15, and a plurality of through holes 15c are formed in the bottom surface portion 15b of the recess 15a (note that only one location is shown in the figure). Absent). And the latching protrusion 15d is protrudingly provided by this through-hole 15c. Further, the upper plate 16 is fitted on the upper surface portion side of the socket body 15, and a guide 15e for positioning the IC package 12 placed on the upper plate 16 is projected upward. ing.
[0021]
Further, the upper plate 16 is also formed with a plurality of through holes 16a at positions corresponding to the plurality of through holes 15c of the socket body bottom surface portion 15b, and the locking projections 16b project into the through holes 16a. It is installed.
[0022]
A contact pin 17 is disposed between the locking projection 16b of the upper plate 16 and the locking projection 15d of the socket body bottom surface portion 15b. That is, these contact pins 17 are flexible and formed in a rod shape from a conductive material. The upper and lower ends of the contact pin 17 are respectively formed with an upper U-shaped portion 17a as an “upper locking portion” and a lower U-shaped portion 17b as a “lower locking portion”. The locking projection 16b of the upper plate 16 is inserted and locked to the U-shaped portion 17a from above, and the locking projection 15d of the socket body bottom surface portion 15b is locked to the lower U-shaped portion 17b. It is inserted from below and locked. Further, an upper end contact portion 17c that contacts the electrode of the IC socket 11 is extended upward from the upper U-shaped portion 17a, and the printed wiring board is extended downward from the lower U-shaped portion 17b. A lower end contact portion 17d that contacts the 13 electrodes is extended. The contact points of the upper end contact portion 17c and the lower end contact portion 17d and the intermediate portion 17e between the contact portions 17c and 17d are offset in plan view. The direction of this offset is set in the same direction between adjacent contact pins 17. Moreover, these upper end contact portions 17c protrude upward from the upper surface of the upper plate 16 when the IC package 12 is not attached, and these lower end contact portions 17d are not attached to the printed circuit board 13 and are attached to the bottom surface of the socket body. It is set so as to protrude downward from the lower surface of the portion 15b.
[0023]
Then, the upper end contact portion 17c and the lower end contact portion 17d are pressed against the electrode, so that the upper end contact portion 17c side rotates around the locking projection 16b and the lower end contact portion 17d. However, the contact pin 17 is bent and deformed like a bow by rotating around the locking projection 15d.
[0024]
Further, the cover 18 is pivotally attached to the socket main body 15 by a pivot shaft 19 on the base end side, and a stopper 18a is rotatably disposed on the distal end side by a shaft 18b. The distal end of the stopper 18a The hook portion 18c provided in the portion is locked to the locked portion 15f formed in the socket main body 15, so that the closed state of the cover 18 is maintained. In this closed state, the IC package 12 is pressed from above by a pressing projection 18d formed on the cover 18.
[0025]
Next, the operation of the IC socket 11 having such a configuration will be described.
[0026]
As shown in FIG. 2A, when the IC package 12 and the printed wiring board 13 are not attached to the IC socket 11, the contact pins 17 are substantially straight.
[0027]
When the printed wiring board 13 is attached to the bottom surface side of the socket body 15 from this state, the lower end contact portion 17d of the contact pin 17 comes into contact with and presses the printed wiring board 13 as shown in FIG. Is done. As a result, the contact pin 17 is slightly lifted, the upper U-shaped portion 17a is pressed against the upper plate locking projection 16b, and the contact pin 17 is bent like a bow.
[0028]
Further, from this state, in a state where the IC package 12 is positioned by the guide 15e and placed on the upper plate 16 and pressed by the pressing convex portion 18d of the cover 18, as shown in FIG. When the upper end contact portion 17c of the contact pin 17 comes into contact with the IC package 12 and the upper end contact portion 17c is pressed, the amount of bending of the contact pin 17 is increased.
[0029]
When the contact pin 17 is bent in this manner, the both-end contact portions 17c and 17d are rotated around the respective locking projections 15d and 16b, and the entire contact pin 17 is bent like a bow. Compared with the case where the contact portion is guided by the narrow slit and moves up and down, the contact pin 17 having a shorter contact pin 17 than the conventional one can secure the vertical movement amount of the contact point of each contact portion 17c, 17d. Accordingly, the IC socket 11 can be reduced in size by the short contact pin 17. Of course, since the amount of vertical movement is ensured, the contact stability of each contact portion 17c, 17d to the IC package 12 can be ensured.
[0030]
Moreover, since both the contact parts 17c and 17d rotate centering | focusing on each latching protrusion 15d and 16b, both the contact parts 17c and 17d slide the electrode of IC package 12 or the printed wiring board 13. The wiping effect will be exhibited.
[0031]
Furthermore, since the contact point of each contact part 17c, 17d is offset with respect to the intermediate part 17e, the external force of an axial direction (up-down direction) acts on these contact parts 17c, 17d. Thus, since a bending moment acts on the intermediate portion 17e, the intermediate portion 17e is always bent in the same direction. Therefore, by setting the adjacent contact pins 17 to bend in the same direction, the contact pins 17 are not inadvertently contacted, and an insulating member is not provided on the contact pins 17. , Can be arranged close to each other.
[0032]
[Embodiment 2 of the Invention]
3 to 6 show a second embodiment of the present invention.
[0033]
In the second embodiment, the first, second, and third adapters 21, 22, and 23 are vertically stacked and stored in the recess 15a of the socket body 15, and a plurality of these adapters 21, 22, and 23 are stored. Contact pins 17 are provided.
[0034]
That is, the first adapter 21 is provided at one place, and as shown in FIG. 4, the length L is longer than the other adapters 22 and 23, and the first adapter 21 is engaged with a notch 15 g formed in the socket body 15. So that it can be mounted in place.
[0035]
The second adapter 22 is shorter than the first adapter 21 and is arranged on both sides of the first adapter 21.
[0036]
The first and second adapters 21 and 22 are provided with recesses 21a and 22a in which the contact pins 17 are disposed. The contact pins 17 are provided on the upper and lower sides of the recesses 21a and 22a. Locking protrusions 21b and 22b to be locked protrude. As shown in FIG. 6, the locking protrusion 22 b may be brought into contact with the side surface of another adapter 22, or may be fitted into the fitting recess 21 c of the other adapter 21. You can also. The fitting recess 21c and the locking projection 22b constitute a “fitting means”.
[0037]
Further, the third adapter 23 is inserted between the second adapter 22 disposed at the end and the side wall surface of the socket main body recess 15a, so that the contact pin locked to the second adapter 22 is inserted. 17 is prevented from coming off and the second adapter 22 from being loose.
[0038]
In addition, as shown in FIGS. 3 and 4, the fixing key 24 is passed through the socket body 15 and the adapters 21, 22, and 23, and is locked to the locking notches 21d, 22d, and 23d. The adapters 21, 22, and 23 are prevented from coming off.
[0039]
If it does in this way, arrangement | positioning and the number of the contact pins 17 can be changed arbitrarily by replacing | exchanging each adapter 21,22,23.
[0040]
Further, since the contact pins 17 can be placed in the recesses 15a of the socket body 15 after the contact pins 17 are set on the adapters 21, 22 and 23 outside the socket body 15, the workability of arranging the contact pins 17 is improved. .
[0041]
Other configurations and operations are the same as those in the first embodiment, and thus description thereof is omitted.
[0042]
Embodiment 3 of the Invention
FIG. 7 shows a third embodiment of the present invention.
[0043]
In the third embodiment, an upper long hole 17f as an “upper locking portion” and a lower long hole 17g as a “lower locking portion” are formed on the upper side and the lower side of the contact pin 17, respectively. The contact pin 17 is locked by inserting the locking projection 22b of the adapter 22 into the long holes 17f and 17g.
[0044]
In this way, unlike the first and second embodiments, the strength is improved unlike the upper U-shaped portion 17a and the lower U-shaped portion 17b whose upper or lower portions are opened.
[0045]
Further, the contact portions 17c and 17d of the contact pin 17 are pressed by the IC package 12 and the printed wiring board 13, and the contact pin 17 is bent, whereby the upper edge portion of the upper long hole 17f and the lower long hole 17g. When the lower edge portion contacts the locking projection 22b, the bending of the contact pin 17 is stopped and over-pressing is prevented.
[0046]
Since other configurations are the same as those of the second embodiment, description thereof is omitted.
[0047]
[Embodiment 4 of the Invention]
FIG. 8 shows a fourth embodiment of the present invention.
[0048]
In the fourth embodiment, a state before the IC package 12 and the printed wiring board 13 are attached, that is, a state in which no external force is applied to the upper and lower end contact portions 17c and 17d of the contact pin 17, 17e is set to be a bow.
[0049]
Thus, if the curvature is adjusted by making the intermediate portion 17e of the contact pin 17 bowed from the beginning, the repulsive force on both the contact portions 17c and 17d can be adjusted, and both the contact portions 17c, 17c, Even in the initial stage where an external force is applied to 17d, it is easier to bend as compared to the linear state as in each of the above-described embodiments. Therefore, the change in the pressing force to the IC package 12 and the printed wiring board 13 is changed to the initial value. Since the size can be reduced at the stage and the end point, an excessive force is not applied to the IC package 12, the printed wiring board 13, and the contact pins 17.
[0050]
Furthermore, since each contact pin 17 is bowed in the same direction, the contact portions 17c, 17d and the intermediate portion 17e can be more reliably bent in the same direction in combination with the offset. .
[0051]
Other configurations are the same as those of the third embodiment, and thus description thereof is omitted.
[0052]
In the above embodiments, the present invention is applied to the IC socket 11 as the “electrical component socket”. However, the present invention is not limited to this and can be applied to other devices.
[0053]
【The invention's effect】
As described above, according to the invention described in each claim, when both contact parts of the contact pin are pressed by attaching both electrical components, the both contact parts are locked or locked. Since the contact pin turns into a bow, the contact part is guided by a narrow slit and moves up and down as in the conventional case. The amount of vertical movement of the points can be ensured. Therefore, it is possible to reduce the size of the socket for electrical parts by the short contact pins. Of course, since the amount of vertical movement is ensured, the contact stability of each contact portion to the electrical component can be ensured. In addition, it is possible to cope with an electrical component to be connected having an ultra-high processing speed of about several hundred MHz.
[0054]
Furthermore, since both contact parts rotate centering on each latching | locking part or latching protrusion, both contact parts can exhibit the wiping effect by sliding the electrode of an electrical component.
[0055]
According to invention of Claim 3, in addition to the said effect, the arrangement | positioning and number of contact pins can be changed arbitrarily by replacing | exchanging adapters. Further, since the contact pins can be placed on the socket body after being set on the adapter outside the socket body, the workability of arranging the contact pins can be improved.
[0056]
According to invention of Claim 4, in addition to the said effect, the assembly workability | operativity of these adapters can be improved by providing a fitting means between each adapter.
[0057]
According to the invention described in claim 5, in addition to the above effect, the upper locking portion and the lower locking portion are long holes into which the locking protrusions are inserted, so that the upper or lower portion is opened. Thus, the strength of the portion where the long hole is formed can be improved. In addition, when each contact portion of the contact pin is pressed by an electrical component and this contact pin bends, if the upper edge and lower edge of the elongated hole come into contact with the locking projection, the contact pin will stop bending. And over-pressing can be prevented.
[0058]
According to the invention described in claim 6, in addition to the above effect, the upper end contact portion and the lower end contact portion of the contact pin and the intermediate portion between the two contact portions are offset. When an external force in the vertical direction is applied, a bending moment is applied to the intermediate portion, so that the intermediate portion is always bent in the same direction. Therefore, by setting the adjacent contact pins to bend in the same direction, each contact pin is not inadvertently contacted, and the contact pins are approached without providing an insulating member. Can be arranged.
[0059]
According to the seventh aspect of the invention, in addition to the above effect, if the curvature is adjusted by making the middle part of the contact pin bowed from the beginning, the repulsive force on both contact parts can be adjusted. it can. In addition, by making the middle part of the contact pin bowed from the beginning, even in the initial stage where external force acts on both contact parts, it is easier to bend compared to the linear state, so the pressing force on the electrical parts is reduced. Since the change can be reduced between the initial stage and the end point, an excessive force is not applied to the contact pin and the electrical component. Furthermore, by making each contact pin bowed in the same direction, a practically beneficial effect of being able to bend in the same direction at all times is exhibited.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an IC socket according to Embodiment 1 of the present invention.
FIG. 2 is an explanatory diagram showing movement of contact pins of the IC socket according to the first embodiment.
FIG. 3 is a longitudinal sectional view corresponding to FIG. 1 according to a second embodiment of the present invention.
FIG. 4 is a plan view showing an adapter arrangement state according to the second embodiment.
5 is a cross-sectional view showing an arrangement state of contact pins according to the second embodiment. FIG.
FIG. 6 is a cross-sectional view showing a fitting state of the adapter according to the second embodiment.
FIG. 7 is a sectional view showing an arrangement state of contact pins according to a third embodiment of the present invention.
FIG. 8 is a sectional view showing an arrangement state of contact pins according to a fourth embodiment of the present invention.
[Explanation of symbols]
11 IC socket (Socket for electrical parts)
12 IC package (one electrical component)
13 Printed wiring board (the other electrical component)
15 Socket body
15a recess
15b Bottom
15d Locking protrusion (locking part)
16 Upper plate
16b Locking protrusion
17 Contact pin
17a Upper U-shaped upper part (upper locking part)
17b Lower U-shaped upper part (lower locking part)
17c Upper end contact area
17d Lower end contact part
17e Middle part
17f Upper slot (upper locking part)
17g bottom long hole (bottom locking part)
21 First adapter
22 Second adapter
21b, 22b Locking protrusion

Claims (7)

An electrical component socket comprising a contact pin having flexibility, and electrically connecting one electrical component and the other electrical component,
The socket body is formed with a locking portion that locks both end portions of the contact pin, and an upper end contact portion that contacts an electrode of the one electrical component is formed on the upper end portion of the contact pin. A lower end contact portion that contacts the electrode of the other electrical component is formed at the lower end portion of the pin, and an upper locking portion and a lower locking portion that are locked to the locking portion are formed,
When the upper end contact portion and the lower end contact portion are pressed against the electrical components, both or at least one of the upper end contact portion side and the lower end contact portion side rotate around the locking portion. A socket for electrical parts, wherein the entire contact pin is set to be bent and deformed like a bow. An upper plate is disposed on the upper side of the socket body, and a flexible contact pin is disposed along the vertical direction between the upper plate and the bottom surface of the socket body. One electrical component is placed on the upper side of the first electrical component, and the other electrical component is disposed on the lower side of the bottom surface portion so that the one electrical component and the other electrical component are interposed via the contact pins. Are sockets for electrical components that are electrically connected to each other,
A locking protrusion is formed on the upper plate and the bottom surface portion, while an upper end contact portion that contacts an electrode of the one electrical component is formed on the upper end portion of the contact pin, and the contact pin A lower end contact portion that contacts the electrode of the other electrical component is formed at the lower end portion, and an upper locking portion and a lower locking portion that are locked to the both locking protrusions are formed,
When the upper end contact portion and the lower end contact portion are pressed against the electrical components, both or at least one of the upper end contact portion side and the lower end contact portion side is centered on the locking projection. The socket for electrical parts is set so that the entire contact pin is bent and deformed like a bow. A plurality of adapters are vertically stacked and disposed in the recess of the socket body, and flexible contact pins are disposed along the vertical direction on the adapters, above the respective adapters. One electrical component is placed, and the other electrical component is disposed below each adapter, so that the one electrical component and the other electrical component are electrically connected via the contact pins. A socket for an electrical component that is connected to
Locking protrusions are formed on the upper and lower portions of the adapter, while an upper end contact portion that contacts the electrode of the one electrical component is formed on the upper end portion of the contact pin, and A lower end contact portion that contacts the electrode of the other electrical component is formed at the lower end portion, and an upper locking portion and a lower locking portion that are locked to the both locking protrusions are formed,
The upper end contact portion and the lower end contact portion are pressed against the electrical component such that at least one of the upper end contact portion side and the lower end contact portion side is centered on the locking protrusion. A socket for electrical parts, wherein the contact pin is rotated and bent so as to be bent like a bow. The electrical component socket according to claim 3, wherein fitting means for fitting each other is provided between the adapters. 5. The electrical component socket according to claim 3, wherein the upper locking portion and the lower locking portion are elongated holes into which the locking protrusions are inserted. 6. The contact points of the upper and lower contact portions of the contact pins with respect to the electrical components and an intermediate portion between the contact portions are offset in plan view. The socket for electrical components as described in any one of these. The electrical component according to any one of claims 1 to 6, wherein the contact pin has a bow shape in a state where the upper end contact portion and the lower end contact portion are not pressed against the electrode. Socket.

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