JP2001023744A - Multipolar connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve characteristics of even fine wires by facilitating readjustments etc., of contact members. SOLUTION: This multipolar connector has a number of conductive contact members 1 and a plate-shaped insulative retaining member 2 formed with a number of through holes 2a, with each one of the contact members 1 inserted in the corresponding through hole 2a. An insulative movable plate 7 formed with a number of through holes 7a corresponding to the through holes 2a is provided inside the intermediate clearance layer 2c of the retaining member 2. Thus, since all the contact members can be fixed and released at a time by moving the movable plate, the number of contact members can be surely fixed in place and subsequent adjustments and the like can be easily made. The contact members 1 include coil springs that are not coaxial with the through holes 2a to enhance resiliency etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-pole connector suitable for an IC socket, a terminal for a printed circuit board, a press-contact probe connector for a printed circuit board, and the like. The present invention relates to a multi-pole connector in which a number of conductive contact members are arranged and arranged in correspondence with the terminal arrangement in order to establish electrical connection with the connection terminals.

[0002] In this specification, a "coil spring" is formed by winding a wire one or more times in a spiral so as to make use of resilience. The wound shape is generally a circle, but may be another shape, for example, an ellipse, an oval, a rhombus, a square, or the like. The term "coil spring coaxial with the through hole" means a coil spring provided in the through hole such that the winding axis of the coil spring coincides with or follows the central axis of the through hole. On the other hand, “coil spring that is non-coaxial with the through hole” means that the winding axis of the coil spring is provided so as to intersect and tilt with respect to the center axis of the through hole. A state in which they are orthogonal is a typical example.

[0003]

2. Description of the Related Art A multipolar connector having a large number of contact members is used for various electronic devices such as an LSI tester as an IC socket or a terminal for a printed circuit board. In particular, it is frequently used when a plurality of contact terminals are electrically connected collectively to electronic components arranged correspondingly. For example, when mounting an LSI on a test head or a printed circuit board of a tester, a multi-pole connector is often interposed in consideration of replacement of the LSI.

[0004] FIG.
(B)), the simplest and most basic structure of such a multi-pole connector, a large number of conductive contact members 1 having electrical contacts at both upper and lower ends, and a large number of through holes 2
and a substantially flat insulating holding member 2 in which a is formed, and each contact member 1 is inserted into each through hole 2a one by one. The contact member 1 is formed to be elongated, has a certain degree of elasticity, and generates a resilient force at the time of expansion and contraction to secure a contact pressure necessary for electrical conduction. Further, the through hole 2a of the holding member 2 is connected to the LS to be electrically connected.
I4 or the like, corresponding to a large number of connection terminals 4a arranged and arranged on one surface, and having the same arrangement as the connection terminals 4a, and a large number of the holding members 2
It is formed through the front and back.

When the LSI 4 is sandwiched between the printed circuit board 3 or the like to be electrically connected and the above-mentioned LSI 4 in which a large number of connection terminals 4a are formed in the same arrangement,
For example (see FIG. 12C), the printed circuit board 3, the multi-pole connector (1 + 2) and the L
When the SI4 is overlapped and adhered, the printed board 3 and the LS
A large number of connection terminals 3a, 4a of I4 are electrically connected by corresponding contact members 1 corresponding to and facing each other. In this way, electrical connection can be easily and collectively made even for electronic components having many connection terminals.

[0006] Such a multipolar connector is connected to a printed circuit board 3.
When mounting in such a manner, it is inconvenient to keep the above-described basic structure, and various modifications and addition of members are performed according to the mounting purpose and the like. For example, the one shown in FIG. 13A has an electronic component storage hole 2b formed on the upper surface of the holding member 2 and accommodates the LSI 4 therein, and also has an aluminum plate on the multi-pole connector (1 + 2) and the LSI 4. And the like, and these are put together and attached to the printed circuit board 3 by fasteners 5 such as bolts and nuts. This is suitable for fixing the LSI 4 to the printed circuit board 3.

FIG. 13 (b) shows an example in which the fastener 5 erected on the printed circuit board 3 is made a rod or the like so that the lid 6 can be moved up and down. The storage hole 6a is formed, and the LSI 4 is pushed down by the pressing member 6b while the LSI 4 is sequentially taken in and out by the pressing member 6b such as a robot arm. When the LSI 4 is pressed down, the lid corresponding to the through hole 2a of the holding member 2 is formed. The upper end of the contact member 1 is guided by the through-hole also formed in 6, so that the contact member 1 reliably contacts the connection terminal 4 a of the LSI 4. This is suitable for testing by replacing the LSI 4 one after another.

Further, in FIG. 13C, the multi-pole connector (1 + 2) is fixed to the printed circuit board 3 with the fastener 5, and the lid 6 for holding the LSI 4 and the like is spring-biased. It can be easily attached and detached with the locking tool 6c or the like. This is suitable for an application in which the LSI 4 is replaced occasionally or even. However, the present invention is not limited to these, and the multi-pole connector is used in various forms, such as by soldering the lower end of the contact member 1 to the connection terminal 3a of the printed circuit board 3 and fixing it.

[0009]

2. Description of the Related Art Conventionally, since the contact member 1 of such a multipolar connector requires elasticity and elasticity in addition to conductivity, a coil spring formed by winding a metal wire or the like into a cylindrical shape. Those containing are often used. Initially, the coil spring was used to cover the metal cylindrical body with different diameters from both ends and housed in the lumen.
When the diameter of the through-hole 2a of the holding member 2 becomes smaller as the pitch of the connection terminals 4a of the SI4 becomes narrower, the one that covers only a part of the coil spring and exposes the remaining part, and the one that consists only of the coil spring, It is being used. When the holding member 2 is inserted into the through hole 2a, the contact members 1 are inserted into the through hole 2a in a direction such that the coil spring is coaxial with the through hole, and press-fitting or bonding is performed. , And were fixed by soldering or the like.

[0010]

By the way, the contact member 1
Is strongly fixed by bonding or soldering, etc.
It is difficult to extract from a and fine-tune the position in the through hole 2a. Even in the case of press-fitting, it is similarly difficult for a contact member that exposes a coil spring, except for a member that can withstand an external force only by the cylindrical body. However, increasing the number of pins and narrowing the pitch of LSIs and the like is abrupt.
The number of those in which the diameters of the contact members and the through holes must be kept to 0.3 mm or less is increasing.

For this reason, while there are more opportunities to make adjustments at the time of assembling or to make adjustments at the time of maintenance, there are many cases where thin contact members with exposed coil springs must be adopted and fixed by bonding or the like. It has become. This is inconvenient because the yield of assembly manufacturing and the like decreases, and repair and the like also become difficult. Therefore, there is an urgent need to be able to securely fix a large number of contact members and to easily perform subsequent adjustment and the like, and it is a technical problem to devise a new structure for that purpose.

Further, as the diameters of the contact member and the through hole become smaller, only a thin wire of the coil spring can be used. For this reason, there is a problem that not only the coil spring has insufficient elasticity but the contact resistance increases, but also the high-frequency characteristics deteriorate. Therefore, it is also an issue to secure a contact pressure necessary for electrical conduction even if the wire material of the coil spring is thin, and to devise a coil shape having a small parasitic inductance.

The present invention has been made to solve such a problem, and an object of the present invention is to realize a multi-pole connector in which even if there are a large number of contact members, re-adjustment thereof can be easily performed. Another object of the present invention is to realize a multi-pole connector having good characteristics even with a thin wire.

[0014]

Means for Solving the Problems First to third means for solving the problems described above are described below.
The configuration and operation and effect will be described below.

[First Solution] The multipolar connector of the first solution (as described in claim 1 at the beginning of the application) has a large number of conductive contact members and a large number of through holes. A multi-pole connector comprising a plate-shaped insulating holding member and the contact members being inserted one by one into the through holes, wherein a large number of through holes are formed corresponding to the through holes of the holding member. In addition to the insulating movable plate, the holding member is provided with a gap layer at an intermediate layer sandwiched between the front and back surfaces of the holding member, and the movable plate is provided with the (movable) plate of the holding member.
It is provided in the intermediate void layer (to a certain extent in a movable state).

In the multipolar connector according to the first solution, when the contact member is inserted into the through hole, the position of the movable plate is adjusted so that the through hole of the movable plate is inserted into the through hole of the holding member. In this state, the contact members are successively dropped or lightly inserted into the through holes, so that the operation can be easily and quickly performed. After the insertion, the movable plate is slightly shifted and fixed. Since all the contact members are simultaneously locked by the movable plate in the through holes of the holding member,
The operation of incorporating the contact member into the holding member is completed.

Further, when the contact member is replaced or readjusted after the assembly is completed, the movable plate is released from the fixed state and the displacement is returned. Thus, the locked state of each contact member is also released at a time, so that an appropriate treatment is performed on the necessary contact member. Then, the movable plate is again slightly shifted and fixed, and the contact members are collectively locked in the through holes. Work such as replacement involving replacement and movement of the contact member is performed in this manner.

As described above, the fixing and release of the contact member with respect to the through hole of the holding member can be collectively performed by shifting the movable plate, so that a single thin contact member exposing the coil spring is employed. Even if this is done, a large number of contact members can be collectively and securely fixed, and during subsequent adjustments, etc., accurately without damaging the contact members and through-holes, it is also troublesome to remove the adhesive. Work can be performed easily without performing work. That is, a large number of contact members can be securely fixed, and subsequent adjustment and the like can be easily performed. Therefore, according to the present invention, it is possible to realize a multipolar connector in which even if there are a large number of contact members, re-adjustment thereof can be easily performed.

[Second Solution] The multipolar connector of the second solution (as described in claim 2 at the beginning of the application) has a large number of conductive contact members and a large number of through holes. A multi-pole connector including a plate-shaped insulating holding member, wherein the contact members are inserted into the through holes one by one, wherein the contact members include a coil spring that is non-coaxial with the through holes. That is, the contact member comprises only a non-coaxial coil spring, or the contact member comprises a combination of a non-coaxial coil spring and another member).

In the multi-pole connector of the second solution, a coil spring inserted non-coaxially into the through hole is used as the contact member. Even if there is a difference of coaxial, a coil spring has the same material and manufacturing method as the conventional one, so that the production and production of the contact member becomes relatively easy on the extension. Cost increase can be suppressed.

The non-coaxial coil spring inserted in the through hole is different from the coaxial coil spring.
While inserting into the through-hole, a relatively weak force is generated toward the inner wall of the through-hole based on the torsional rigidity of the wire, while the elasticity required at the time of contact with the connection target is based on the bending rigidity of the wire. Occur. As a result, the contact member, when inserted into the through-hole, gently stretches and stops in the through-hole by itself, and at the time of contact, generates a strong elastic force.

In addition, since the two contact objects are in contact with each other for every half turn of the coil spring, the current paths are shortened and parallelized, and the magnetic action is canceled by the parallel paths. As a result, even if the wire material of the coil spring becomes thin, the increase in contact resistance and inductance is suppressed, so that not only DC and low-frequency characteristics but also high-frequency characteristics are not improved or impaired. Therefore, according to the present invention, it is possible to realize a multipolar connector having good characteristics even with a thin wire.

[Third Solution] The multi-pole connector of the third solution (as described in claim 3 at the beginning of the application) is the multi-pole connector of the second solution, wherein The contact member also includes a coil spring coaxial with the through hole (in addition to the non-coaxial coil spring described above).

In the multipolar connector according to the third solution, the coil spring coaxial with the through hole and the coil spring non-coaxial with the through hole are incorporated in one contact member. In addition to the advantages of the coaxial coil spring, such as a wide range of expansion and contraction and stability at the time of contact, the advantages of the non-coaxial coil spring, such as a large contact pressure and a short and large current path, can be obtained at the same time. As a result, a minimum contact state for establishing electrical continuity is reliably obtained, and increases in contact resistance and inductance are suppressed. Therefore, according to the present invention, it is possible to realize a multi-pole connector having good characteristics by reliably contacting even a thin wire.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the multipolar connector of the present invention achieved by such a solution will be specifically described with reference to the following first to fourth embodiments. The first embodiment shown in FIGS. 1 to 4 and its modification shown in FIG. 5 embody the first solution means described above, and are obtained from the second embodiment shown in FIG. 6 and FIG. FIG.
The modified example shown in FIG. 10 embodies the above-mentioned second solving means, and the third embodiment shown in FIG. 10 embodies the above-mentioned third solving means. The fourth embodiment shown embodies the first to third solving means described above. Note that what has been described in the section of the background art is also applicable to each embodiment. Therefore, repeated description of various implementation examples such as FIG. 13 and other various application examples will be omitted, and the following description of FIG. This section focuses on improvements based on the basic structure.

[0026]

First Embodiment A first embodiment of the multipolar connector according to the present invention will be described with reference to the drawings.
FIG. 1 is an overall structural view, FIG. 2 is a structural view of a holding member 2 of the above, and FIG.
FIG. 4 (a) is a structural view of the contact member 1 of FIG.
FIG. 4 (b) and 4 (c) show one of the plurality of contact members 1 in the through hole 2a of the holding member 2.
It is a vertical cross-sectional view of a part inserted and inserted into,
(B) shows a non-contact state, and (c) shows a contact state.

As described above, this multipolar connector has a substantially flat insulating holding member 2 having a large number of through holes 2a formed therein, and a large number of ones inserted into the through holes 2a one by one. (See FIG. 1).
2), and a movable plate 7 is also provided (see FIG. 1).

The holding member 2 (see FIG. 2) is made of an insulating material such as a glass epoxy laminate, for example, and is typically in the form of a plate having a thickness of several mm and a substantially rectangular shape having a side of several cm. Often. And a large number of through holes 2
The holes a are formed, and the positions of the holes are determined in accordance with the arrangement of the connection terminals 4a such as the LSI 4 to be electrically connected. The diameter of the through-hole 2a is easier to accommodate the contact member 1 as it is larger. However, the diameter of the through-hole 2a must be narrower than the pitch of the connection terminals 4a.
Some are small and thin, such as m. The end of the through hole 2a (see FIG. 4B) may be appropriately chamfered so that the contact member 1 can enter and exit smoothly.

The holding member 2 (see FIG. 2)
In order to hold the movable plate 7 in a state where the movable plate 7 can be inserted and withdrawn or can be moved at least to some extent in at least one direction, the intermediate gap layer 2 is left with three sides around the intermediate layer sandwiched between the front and back surfaces.
c is formed. The intermediate void layer 2c may be formed by shaving from the open side after forming the plate-like body,
In order to avoid deep cutting, it is possible to integrally mold with a mold with a core, or to divide the front and back into two pieces,
It is also possible to form a thin part and then combine them by lamination or the like. Further, in the holding member 2, a pin insertion hole 2d that penetrates the intermediate gap layer 2c is formed at an appropriate position away from the arrangement of the through holes 2a in order to insert a pin 8 described later.

The movable plate 7 (see FIG. 3) is made of the same or another insulating material as the holding member 2, and even if it is inserted into the intermediate gap layer 2c of the holding member 2, it moves a little to the side easily. As can be seen, it is formed slightly smaller than the intermediate void layer 2c. Also in this case, a large number of through holes 7a having substantially the same diameter are formed so as to correspond to the through holes 2a of the holding member 2. Also, the same number of pin insertion holes 7b are formed in correspondence with the pin insertion holes 2d of the holding member 2, but the distance between the through hole 2a and the pin insertion hole 2d in the holding member 2, the movable plate 7 Is the distance between the through hole 7a and the pin insertion hole 7b.
Slightly different in the direction of movement. Specifically, the diameter of the through holes 2a, 7a is about a fraction to half of the diameter,
It is out of alignment.

The contact member 1 (see FIG. 4A) is, for example, only a coil spring formed by spirally winding a thin wire having a diameter of several tens of μm into a single cylindrical body. As the wire, a metal wire such as a beryllium copper wire, a phosphor bronze wire, a stainless steel wire, and a piano wire is preferably used according to the balance between the drawing property, the spring property, and the conductivity. A surface treatment such as gold plating is also performed. Also,
The outer diameter of the coil spring is equal to the above-described through holes 2a, 7a.
Is slightly smaller than the inner diameter of the holding member 2, and its length in the axial direction (vertical direction in FIG. 4) is longer than the thickness of the holding member 2.

When assembling them (see FIGS. 1 (c) and 4 (b)), if there is a simple assembling jig 9 such as a box having a two-step bottom, the work can be performed easily. it can. That is, the movable plate 7 is connected to the intermediate gap layer 2 of the holding member 2.
When the through-holes 2a and 7a overlap and coincide with each other, the holding member 2 is laid inside the assembly jig 9. The pin insertion holes 2d and 7b may be shifted.
Then, the contact members 1 are vertically inserted into the through holes 2a one after another. Then, any of the contact members 1
The lower end protrudes downward from the lower surface / rear surface of the holding member 2 by the step difference of the inner bottom of the assembly jig 9, and the upper end also protrudes upward from the upper surface / front surface of the holding member 2.

Then, the movable plate 7 is slightly shifted, and when the pin insertion holes 2d and 7b overlap and coincide with each other, the pin 8 is inserted into the pin insertion holes 2d and 7b (see FIG. 1B). Then, the movable plate 7 is fixed to the holding member 2, and the through hole 2 a of the holding member 2 and the through hole 7 a of the movable plate 7
Is also maintained in a displaced state. In this state, the middle portion of the contact member 1 is forcibly bent by the movable plate 7 so that the periphery of the opening at both ends of the through hole 7a and the through hole 2
a of the holding member 2 is fixed in the through hole 2 a of the holding member 2.

Regarding the multi-pole connector of the first embodiment,
The mode of use and operation will be described with reference to the drawings. FIG. 4C shows a state in which the printed circuit board 3 is brought into contact with the LSI 4 from below, and the LSI 4 is brought into contact with the printed circuit board 3 from above. Wiring patterns, lands, and the like are frequently used for the connection terminals 3a of the printed circuit board 3;
Since balls, bumps, pins, and the like are frequently used for the connection terminals 4a of the SI 4, a case where the connection terminals 3a are lands and the connection terminals 3a are solder balls is illustrated as a specific example.

When the multi-pole connector is placed on a predetermined position on the printed circuit board 3 and the holding member 2 is pressed against the printed circuit board 3, the portion of the coil spring forming the contact member 1 extending below the movable plate 7 is removed. It contracts, and its lower end contacts the connection terminal 3a of the printed circuit board 3 and generates an appropriate contact pressure there. Further, when the LSI 4 is pressed from above while aligning the position with the multi-pole connector in that state, the portion of the coil spring forming the contact member 1 extending above the movable plate 7 is contracted, and the upper end thereof becomes L
While contacting the connection terminal 4a of the SI 4, an appropriate contact pressure is also generated there. Thus, by using this multi-pole connector, multi-point connection between the LSI 4 and the printed circuit board 3 is performed collectively.

Even if the multi-pole connector has been once assembled or used (see FIG. 1B), it is stored in an assembly jig 9 and the pin 8 is pulled out (FIG. 1 (B)). c)), all contact members 1 are immediately free to enter and exit through the through hole 2a. Then, if necessary, the corresponding contact member 1 is replaced or its position is readjusted. Then, as in the last work during assembly, the movable plate 7
To fix all the contact members 1 collectively, and then
Back. In this way, operations such as readjustment are also easily performed.

[0037]

FIG. 5 (a) corresponds to FIG. 4 (b) of the first embodiment, in which one contact member 1 is inserted into the through hole 2a of the holding member 2. FIG. FIG. 3 is a partial vertical cross-sectional view. 5 (b) to 5 (c) are longitudinal sectional views of the same portions, but show a state where the movable plate 7 is shifted laterally after the insertion to fix the contact member 1. FIG.

FIG. 5 (a) shows the holding member 2 of the coil spring (1) so that the contact member 1 made of a coil spring is securely held by the displacement between the holding member 2 and the movable plate 7. The intermediate portion of the movable plate 7 that comes into the through hole 7a is made rougher, that is, the winding density thereof is made smaller than the portions at both ends that come into the through hole 2a. Further, in order to stabilize the contact state with the connection terminal 4a or the connection terminal 3a,
Both ends are wrapped and closely wound. Further, the through-hole 2a is provided so that the spherical / projecting connection terminal 4a is not crushed.
A suitable counterbore processing is also applied to the end opening of.

FIG. 5B shows the lower connection terminal 3a.
The contact member 1 is not only a coil spring but also a coil spring and a movable contact 1 for ensuring the connection with the movable contact 1.
It is constituted by a combination with a. The movable contact 1a is formed by processing from a conductive material such as beryllium copper or brass, is inserted into the lower end of the through hole 2a in a vertically movable manner, and is urged by a coil spring.

FIG. 5C shows an upper connection terminal 4a.
The contact member 1 is combined with a coil spring and its upper end in order to secure the connection with the movable contact 1.
b. FIG. 5 (d)
Are movable contacts 1a,
1b, and the movable contact 1b
The upper plate 2e is covered to prevent the falling off of the upper plate 2e.

[0041]

Second Embodiment A specific configuration of a multipole connector according to a second embodiment of the present invention will be described with reference to the drawings.
6A and 6B show the structure of the contact member 1 in a free state, wherein FIG. 6A is a front view and FIG. 6B is a side view.
FIGS. 6C and 6D show the holding member 2 of the contact member 1.
(C) is a partial vertical cross-sectional view in which one contact member 1 is inserted into the through hole 2a of the holding member 2, and (d) is a plurality of the contact members. FIG.

The contact member 1 is composed of only a coil spring, and this coil spring is made of the same wire as described above, but the number of windings and the overall shape after winding are different (FIG. 6 (a)). ), (B)). Since the number of windings is small, the number of windings is, for example, about two (see FIG. 6A). The free length in the winding axis direction (the left and right direction in FIG. 6A) is the diameter of the through hole 2a of the holding member 2. Be longer. Further, the shape viewed from the winding axis direction (the direction perpendicular to the paper surface in FIG. 6B) is close to an elliptical shape and an elliptical shape, and the shorter diameter is smaller than the inner diameter of the through hole 2 a of the holding member 2. It is slightly shorter, and its major axis is longer than the through hole 2a. The end of the wire is bent inward so as not to be caught on the inner wall of the through hole 2a.

The holding member 2 (see FIGS. 6 (c) and 6 (d)) may be a simple plate-like body without the intermediate gap layer 2c or the pin insertion hole 2d, and a large number of through holes 2a passing through the front and back. Are perforated. When the contact member 1 is inserted into the through hole 2a, the coil spring forming the contact member 1 is held in each of the vertical through holes 2a of the horizontal holding member 2 so as to be contracted in the winding axis direction. With the major axis direction up and down, press lightly. Thereby, the through hole 2
When a is in the vertical state, the contact member 1, that is, the winding axis of the coil spring is in a substantially horizontal state. In such a multi-pole connector, it can be said that the contact member comprises only a non-coaxial coil spring.

In this case, since the contact member 1 is lightly stretched by a force to extend in the winding axis direction, the contact member 1 continues to stop in the through hole 2a without dropping by its own weight or slight external force. On the other hand, when the exposed portion from the through hole 2a comes into contact with the connection terminals 3a, 4a and the like and is pressed strongly, the contact member 1 slides appropriately in the through hole 2a and balances the connection terminals 3a, 4a on both sides with good balance. To apply contact pressure. Thus, also in this case, multipoint connection between the LSI 4 and the printed circuit board 3 is performed at once, but since the connection path is only slightly longer than the linear distance between the connection terminals 3a and 4a, the DC resistance value Not only that, the inductance value that has a large influence on the high frequency also becomes small.

Further, even after once assembled or used, the contact member 1 is stopped in the through hole 2a in a state where it can be pushed out or pulled out by applying a certain amount of force. If there is, it is possible to replace the corresponding contact member 1 at any time. The fine adjustment of the position of the contact member 1 in the through hole 2a is not necessary since the self-adjustment function is provided as described above.
Thus, also in this case, operations such as replacement of the contact member can be easily performed.

[0046]

[Modification of Second Embodiment] FIGS. 7A to 9 show
FIG. 10 is a longitudinal sectional view of a portion corresponding to FIG. 6C of the second embodiment described above, in which one of a large number of contact members 1 is inserted into a holding member 2. FIGS. 7A to 8
8B, the contact member 1 is made of only a coil spring as in the second embodiment.
Unlike the above, the contact member 1 is composed of a combination of a non-coaxial coil spring and another member.

First, FIG. 7 (a) shows that the bending of the end portion of the wire is suppressed to a small extent to facilitate the manufacture, and FIG. 7 (b) shows a spherical / projecting connection terminal 4a. FIG. 7 (c) shows that the contact point with the connection terminal 3a is stepped for each turn at the point of contact with the connection terminal 3a. In FIG. 7D, more than two and a half turns are wound.

Next, FIG. 8 enumerates the use situation when the connection terminal 4a is a pin type such as a lead terminal and the shape of the through hole 2a suitable for it.
In FIG. 8A, the chamfer at the upper end of the through hole 2a is enlarged so that the connection terminal 4a can be easily projected.
In FIG. 8B, the upper end of the contact member 1 is placed below the stepped portion of the upper end of the through hole 2a so that the contact member 1 does not come off when the connection terminal 4a is pulled out.
In FIG. 8C, when the connection terminal 4a is a stepped lead terminal, the distal end portion is radiated between the contact members 1 and the upper end of the contact member 1 is pushed at the base end portion. It was done.

FIG. 8 (d) shows a case where the contact member 1 is housed in a metal cylindrical body 1c and is used as a socket pin so that a single pin can be used. The vicinity of the open end of the metal tubular body 1c is caulked to prevent the contact member 1 from coming out.

In FIG. 9, the metal rod 1d projecting downward is pressed into the lower half of the through hole 2a.
Solder balls 1f are welded, and a non-coaxial coil spring is inserted from above. When mounting the multi-pole connector on the printed circuit board 3, the solder balls 1f
The multi-pole connector can be securely attached by soldering to the connection terminals 3a and the like of the printed circuit board 3 using the above method.

[0051]

Third Embodiment A specific configuration of a third embodiment of the multipolar connector of the present invention will be described with reference to the drawings.
FIG. 10 is a vertical cross-sectional view of any one of a large number of contact members 1 and a portion to be inserted into the holding member 2, showing a structure of the contact member 1 and a state of being inserted into the holding member 2. I have.

This contact member 1 is obtained by inserting the above-described non-coaxial coil spring (see FIG. 6) into the above-described coaxial coil spring (see FIG. 4), thereby superposing the two. is there. When the non-coaxial coil spring is inserted into the through-hole 2a, the coaxial coil spring is also held in the through-hole 2a by the force of the non-coaxial coil spring.

In this case, stable contact over a wide range can be obtained by the coaxial coil spring.
The advantage of connection with low resistance and low inductance by a non-coaxial coil spring is also obtained.

[0054]

Fourth Embodiment A specific configuration of a fourth embodiment of the multipolar connector of the present invention will be described with reference to the drawings.
FIG. 11 is a vertical cross-sectional view of any one of a large number of contact members 1 and a portion inserted into the holding member 2, showing a structure of the contact member 1 and a state of being inserted into the holding member 2. I have. (A) illustrates a non-contact state, and (b) illustrates a contact state.

This multi-pole connector is different from that of the third embodiment in that the holding member 2 is formed with the above-mentioned intermediate gap layer 2c, and the above-mentioned movable plate 7 is also accommodated therein. That is the point. In this case, as in the first embodiment, since the contact members 1 are collectively fixed or released by the movable plate 7, it is not necessary to stretch the contact members 1 in the through holes 2a. Even if the member 1 includes both a coaxial and a non-coaxial coil spring, it can be easily inserted and removed.

[0056]

[Others] In the above embodiment, the pin 8 is used to fix the relative position between the holding member 2 and the movable plate 7.
Such releasable fixings are not limited to those described above. For example, a combination of a key and a key groove, a combination of an extruded screw and a lock nut, or a ratchet or a spring bias is used to hold the contact member 1 in the through hole 2a and the holding member 2 and the movable plate. Anything that can be shifted from 7 is acceptable.

The movable plate 7 may be partially protruded from the holding member 2 or may be entirely contained in the holding member 2. The shape of the intermediate void layer 2c of the holding member 2 also
The present invention is not limited to the above-described one-side open type. For example, both sides may be open or the four sides may be closed and the movable plate 7 may be moved by protruding or pulling through a pin hole or the like. good.

Further, in the above embodiment, the free length of most of the contact members 1 is longer than the through-hole 2a of the holding member 2.
The length of the contact member 1 is not limited to this, and the design may be changed to an appropriate length or the like according to the shape or the protruding length of the connection terminals 3a, 4a of the printed circuit board 3 or the LSI 4. Therefore, it may be shorter than the through hole 2a.

[0059]

As is apparent from the above description, in the multipolar connector according to the first solution of the present invention, the fixing and release of the contact member with respect to the through hole of the holding member is achieved by shifting the movable plate. By being able to be performed collectively, a large number of contact members can be securely fixed, and subsequent adjustments and the like can be easily performed. As a result, even if there are a large number of contact members, it is easy to readjust. There is an advantageous effect that a simple multi-pole connector can be realized.

Further, in the multi-pole connector according to the second solution of the present invention, the shape of the coil spring and the like are devised so that the contact material and the manufacturing method are not largely changed. The member stops in the through-hole by itself and not only generates a strong contact pressure, but also shortens and parallelizes the current path, etc., and as a result, a multi-pole connector with good characteristics was realized even with a thin wire. This has the advantageous effect of:

Further, in the multipolar connector according to the third solution of the present invention, by combining different kinds of coil springs, a minimum contact state for establishing electrical conduction can be reliably obtained. In addition, an increase in contact resistance and inductance is also suppressed, and as a result, there is an advantageous effect that a multi-pole connector having good characteristics can be realized by making reliable contact even with a thin wire.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of a multipolar connector of the present invention.
FIG.

FIG. 2 is a structural view of the holding member.

FIG. 3 is a structural view of the movable plate.

FIG. 4 is a diagram showing a structure of the contact member and an inserted state thereof.

FIG. 5 shows various modifications of the first embodiment.

FIG. 6 shows a second embodiment of the multipolar connector of the present invention.
It is a figure showing the structure figure of the contact member, and the insertion state.

FIG. 7 shows various modifications of the second embodiment.

FIG. 8 is another modification of the second embodiment.

FIG. 9 shows another modification of the second embodiment.

FIG. 10 is a partial longitudinal sectional view showing a structure of a contact member and a state of insertion thereof in a third embodiment of the multipolar connector of the present invention.

FIG. 11 is a partial longitudinal sectional view showing a structure of a contact member and a state of being inserted in a fourth embodiment of the multipolar connector of the present invention.

FIG. 12 is a structural diagram of a basic multi-pole connector.

FIG. 13 shows various mounting examples of a multi-pole connector.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Contact member (pole, coaxial or non-coaxial coil spring) 1a Movable contact (convex contact) 1b Movable contact (concave contact) 2 Holding member (integral or multi-layered plate-like body) 2a penetration Hole (through hole formed in holding member) 2b Electronic component storage hole (dent for holding LSI) 2c Intermediate gap layer (gap layer formed in holding member) 2d Pin insertion hole (between holding member and movable plate) Relative position fixing means) 2e Upper plate (a member that regulates the movable range of the movable contact) 3 Printed circuit board (one of printed circuit and electrical connection target) 3a Connection terminal (contact surface such as wiring pattern and land or protrusion) 4 LSI (Large-scale integrated circuit, the other of electrical connection targets) 4a Connection terminal (conductor such as ball, bump, pin, or other protrusion or contact surface) 5 Fastener (fastener, guide member) 6 Lid (holding lid, movable holder 6a Electronic component storage hole (dent for holding LSI) 6b Pressing member (electronic component handling mechanism, robot arm) 6c Locking member (detachable member) 7 Movable plate 7a Through hole (penetration formed in movable plate) Hole) 7b Pin insertion hole (means for fixing relative position between holding member and movable plate) 8 Pin (fixing tool for relative position between holding member and movable plate) 9 Assembly jig

Claims (3)

[Claims] 1. A multi-electrode comprising: a plurality of conductive contact members; and a plate-like insulating holding member having a plurality of through holes formed therein, wherein the contact members are inserted into the through holes one by one. In the connector, a multi-pole connector in which an insulating movable plate having a large number of through holes formed corresponding to the through holes of the holding member is provided in an intermediate gap layer of the holding member. . 2. A multi-electrode comprising: a plurality of conductive contact members; and a plate-like insulating holding member having a plurality of through holes formed therein, wherein said contact members are inserted into said through holes one by one. In the connector, the contact member includes a coil spring that is non-coaxial with the through hole. 3. The contact member according to claim 2, further comprising a coil spring coaxial with said through hole.
Multipolar connector as described.