JPH1092540A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector, which can absorb the dimensional error of an electronic part and which can shorten the electrical conduction path at the connecting of the electronic part and which can reduce the inductance. SOLUTION: A coil spring 3 is used as a contact, and a center line C1 of a through hole 2 of an insulator 1 is inclined from an electronic part connecting direction D. When electronic parts (a LSI 8 and a printed board 9) are connected to each other through the insulator 1, a center line C2 of the coil spring 3 is inclined from the center line C1 of the through hole 2 by the elastic deformation, and the elastic force of the coil spring 3 works so as to absorb the dimensional error of the electronic part, and contact stability can be obtained, and since a clearance in the center line direction of coil part 3a of the coil spring 3 becomes zero, conduction path is formed straight and shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector,
Especially LS of printed circuit board and land grid package type
The present invention relates to a connector for making electrical connection between electronic components such as I.

[0002]

2. Description of the Related Art FIG. 10 is a longitudinal sectional view for explaining the relationship between a contact and a through hole of a conventional connector, and FIG. 10A shows a state before electronic components are connected.
(B) is a figure which shows the state after electronic component connection.

A plurality of through holes 402 corresponding to lands (pads) 408b and 409b of electronic components are formed in an insulator 401 of the connector. The axial center line C ₁ of the through hole 402 is parallel to the electronic component connection direction D. The contact accommodated in the through hole 402 is a compression coil spring 403.

When connecting the LSI 408 and the printed circuit board 409, a compression coil spring 403 is inserted into a through hole 402 of an insulator 401 as shown in FIG.
Is stored. Then, as shown in FIG.
The LSI 408 is placed on the printed circuit board 409 via the insulator 401, and a tightening screw (not shown) is tightened. The insulator 401 is tightened by the tightening screw.
, The LSI 408 and the printed circuit board 409 approach each other, the compression coil spring 403 contracts in the electronic component connection direction D, and an elastic force is generated. At this time, the compression coil spring 40
3 contacts the land 408b of the LSI 408, and the lower end of the compression coil spring 403 contacts the land 409b of the printed circuit board 409.
9 are electrically connected through a compression coil spring 403.

[0005]

[SUMMARY OF THE INVENTION Incidentally, vine winding part (one volume of a coil spring) 403a centerline C ₂ direction of the gap adjacent to each other of the compression coil spring 403 when the compression coil spring 403 is compressed Is set so that it does not become zero.

[0006] This is the center line C ₂ of the compression coil spring 403.
This is to absorb variations in dimensions in the direction of, and variations in flatness of electronic components such as the printed circuit board 409.

Therefore, there is a problem that the path of electrical conduction at the time of connecting the electronic component is curved (helical or spiral), long, and large in inductance.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and has as its object to reduce dimensional errors of electronic components, shorten the path of electrical conduction when connecting electronic components, and reduce inductance. It is to provide a connector that can.

[0009]

According to a first aspect of the present invention, there is provided a connector for electrically connecting an electronic component having a plurality of lands to a plurality of lands corresponding to the lands. An insulator having a through hole, and a land of one of the electronic components housed in the through hole and arranged on one side of the insulator and a land of the other electronic component arranged on the opposite side of the insulator are electrically connected to each other. And a contact, wherein the contact is a coil spring, and a center line of the through hole is inclined with respect to an electronic component connection direction.

As described above, the coil spring is employed as the contact, and the center line of the through hole is inclined with respect to the connecting direction of the electronic components. Therefore, when the electronic components are connected to each other via the insulator, a compressive force acts. As a result, the coil spring is elastically deformed, the center line of the coil spring is inclined with respect to the center line of the through hole, and the elastic force of the coil spring works to obtain contact stability. The gap in the center direction of the line portion becomes zero, and the path of electrical conduction is linear and short.

According to a second aspect of the present invention, there is provided a connector for electrically connecting electronic components having a plurality of lands, wherein the insulator has a plurality of through holes corresponding to the lands, and is accommodated in the through holes. A contact disposed between the land of one of the electronic components disposed on one side of the insulator and the land of the other electronic component disposed on the opposite side of the insulator, and a center line of the through hole is provided with an electron. The contact is a coil spring, which is parallel to the component connection direction, and the coil spring is formed by spirally winding a rod-shaped elastic member from one end to the other end of the center line while alternately repeating advance and retreat. There is a feature.

As described above, the center line of the through hole is parallel to the electronic component connection direction, and the contact is a coil spring. The coil spring has a rod-shaped elastic member that moves forward and backward from one end of the center line to the other end. When the electronic components are connected to each other via insulators, the coil spring is elastically deformed by the compressive force, and the center line of the coil spring becomes the center line of the through hole. And the elastic force of the coil spring acts to obtain contact stability, and the gap in the center line direction of the vine windings of the coil springs adjacent to each other becomes zero, and the path of electrical conduction is straight. And short.

According to a third aspect of the present invention, there is provided the connector according to the second aspect of the present invention, wherein a diameter of an intermediate portion of the through hole is larger than a diameter of both ends, and a diameter of an intermediate portion of the contact is smaller than both ends. The insulator is larger than the diameter, and the insulator is divided in an electronic component connection direction.

With this configuration, it is not necessary to provide a supporting projection for supporting the coil spring on the inner peripheral surface of the through hole.

According to a fourth aspect of the present invention, there is provided a connector for electrically connecting electronic components having a plurality of lands, wherein the insulator has a plurality of through holes corresponding to the lands, and is accommodated in the through holes. A contact disposed between the land of one of the electronic components disposed on one side of the insulator and the land of the other electronic component disposed on the opposite side of the insulator, and a center line of the through hole is provided with an electron. The contact is parallel to the component connection direction, and the contacts are slidably fitted to the first and second bottomed cylindrical portions and the fitted first and second bottomed cylindrical portions. And an elastic body to be accommodated.

When the electronic components are connected to each other via the insulator, the elastic body contracts in the electronic component connection direction, and the intermediate portion expands in a direction perpendicular to the electronic component connection direction. The elastic force of the elastic body acts to press the bottom surface of the first bottomed cylindrical portion against the land of one electronic component and the bottom surface of the second bottomed cylindrical portion against the land of the other electronic component. In addition, due to the expansion of the intermediate portion of the elastic body, the cylindrical portion of one bottomed cylindrical portion is pressed against the cylindrical portion of the other bottomed cylindrical portion.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is an exploded perspective view for explaining the entire structure of the connector according to the first embodiment of the present invention, FIGS. 3 and 4 are longitudinal sectional views of the connector, and FIG. FIG. 6 is a view showing a state, and FIG. 6 is a view showing a state after the connector is assembled.

As shown in FIG. 2, the connector according to the first embodiment has a rectangular insulator 1 and an insulator 1.
A coil spring 3 (see FIG. 1) as a contact accommodated in the through hole 2, a frame 4 supporting the insulator 1, a cover 5 arranged on the upper surface side of the frame 4,
A square plate 6 arranged on the lower surface side of the frame 4,
A screw 7 for connecting the cover 5, the frame 4, the printed board (electronic component) 9 and the plate 6 in the component connection direction D, and a spring pin 11 for connecting the frame 4, the printed board 9 and the plate 6 in the component connection direction D. Have.

FIG. 1 is a longitudinal sectional view for explaining a relationship between a contact and a through hole of a connector according to a first embodiment of the present invention, and FIG. 1A shows a state before electronic components are connected. FIG. 1B is a diagram showing a state after electronic components are connected.

The insulator 1 has a plurality of through holes 2 corresponding to the lands 8b and 9b of the electronic component. The center line C ₁ of the through hole 2 is inclined with respect to the electronic component connection direction D. A coil spring 3 is accommodated in the through hole 2, and two supporting projections 1 a for supporting the coil spring 3 are provided on the inner peripheral surface of the through hole 2. Before connecting the LSI (electronic component) 8 and the printed circuit board 9, the coil spring 3
Vine winding part 3a, the inter-3a, there is small clearance centerline C ₂ direction. Further, a projection 1b (see FIG. 4) is provided on the outer peripheral surface of the insulator 1.

The frame 4 includes a rectangular frame 4a and a frame 4
and a projection 4b (refer to FIG. 4) provided on the inner peripheral surface of FIG. The protrusion 4b is a protrusion 1b of the insulator 1.
Can be engaged. Holes 4c for passing the screws 7 are formed at the four corners of the frame 4a, and holes 4d for inserting the spring pins 11 are formed near two diagonally located holes 4c.

The cover 5 includes a rectangular cover body 5a and a plurality of spring portions 5b formed integrally with the cover body 5a. A pair of spring portions 5b is formed on each side of the cover main body 5a, and the spring portions 5a are inclined downward. The spring portion 5a presses the LSI 8 against the upper surface 1c of the insulator 1 when the electronic component is connected. Grooves 5c for passing the screws 7 are formed at the four corners of the cover body 5a.

At four corners of the plate 6, screw holes 6a for passing screws 7 are formed, and two diagonal holes 6a are formed.
a hole 6 for inserting the spring pin 11
b is formed. Since the plate 6 is formed of a conductive metal such as aluminum, a rectangular insulating film 10 is disposed between the plate 6 and the printed board 9 to prevent a short circuit between the plate 6 and the conductive pattern. At four corners of the insulating film 10, screw holes 10a for passing the screws 7 are formed, and two diagonally located holes 1a are formed.
A hole 10b for inserting the spring pin 11 is formed near 0a.

A printed circuit board 9 is arranged between the frame 4 and the plate 6. A plurality of lands 9b are arranged in a grid on the upper surface 9a of the printed circuit board 9. Also,
Holes 9c for passing the screws 7 are formed at four corners of the printed circuit board 9, and holes 9d for inserting the spring pins 11 are formed near two diagonally located holes 9c.

Next, a method of using the connector of the first embodiment will be described.

Before the assembly, the coil spring 3 is inserted into all the through holes 2 of the insulator 1 in advance. Since the coil spring 3 in the through hole 2 is supported by the two supporting projections 1a, the coil spring 3 does not fall from the through hole 2.

First, the insulator 1 is mounted on the frame 4. At this time, the center line C ₁ of the through hole 2 matches the center line C ₂ of the coil spring 3 (see FIG. 1A).

Next, as shown in FIG. 3, the frame 4, the printed circuit board 9, the insulating film 10 and the plate 6 are connected by a spring pin 11. That is, plate 6
Film 10, printed circuit board 9, frame 4
Are sequentially overlapped, these holes 4d, 9d, 10b, and 6b are aligned with each other, and the spring pin 11 is press-fitted. The hole 9d of the printed circuit board 9 and the hole 10b of the insulating film 10
Has a diameter slightly larger than the outer diameter of the spring pin 11, and the spring pin 11 is pressed into the frame 4 and the plate 6. As a result, the frame 4, the printed circuit board 9,
The insulating film 10 and the plate 6 are integrally joined in the component connection direction D. At this time, the holes 4c, 9c, 10a of the frame 4, the printed board 9, and the insulating film 10 and the screw holes 6a of the plate 6 coincide with the component connection direction D.

Thereafter, as shown in FIG. 5, the LSI 8 is inserted inside the frame 4.

Finally, the cover 5 is put on and the cover body 5a
Screws 7 inserted into the grooves 5c of the frame 4, the printed circuit board 9, and the respective holes 4c, 9c, 10a of the insulating film 10.
Into the screw hole 6a of the plate 6 and tighten it (see FIG. 6).

When the screw 7 is tightened, the spring portion 5b of the cover 5 presses the upper surface 8a of the LSI 8 downward. At this time, the coil spring 3 has a predetermined angle with respect to the center line C ₂ of the coil spring 3 (the electronic component connection direction D and the center line C of the through hole 2).
Power from an angle) inclined direction with _one thick arrow in (FIG. 1 (b)) acts. As a result, so that the center line C ₂ of the coil spring 3 is inclined to the direction of inclination opposite to the direction of the center line C ₁ of the through hole 2 with respect to component connecting direction D as shown FIG. 1 (b), the coil spring 3 Elastically deform. This modification may be other than that shown in FIG. 1B, but in any of the modifications, the outer peripheral surface of the upper end of the coil spring 3 and the outer peripheral surface of the lower end of the coil spring 3 penetrate. It is deformed so as to be pressed against the inner peripheral surface of the hole 2.

Through the above-described assembling process, the upper end of the coil spring 3 in the elastically deformed state contacts the land 8b of the LSI 8, and the lower end of the coil spring 3 contacts the land 9 of the printed circuit board 9.
b, and the LSI 8 and the printed circuit board 9 are electrically connected through the coil spring 3.

According to the connector of the first embodiment, the coil spring 3 is employed as a contact, and the center line C ₁ of the through hole 2 is inclined with respect to the component connection direction D, so that the electronic component can be connected. , the slope with respect to the center line C ₁ of the center line C ₂ through hole 2 of the coil spring 3, is absorbed dimensional error of the electronic component working elastic force of the coil spring 3, together with the contact stability can be obtained, together since the central axis C ₂ direction of the gap between adjacent vine winding part 3a becomes zero, the path of electrical conduction is straight and shortened, the inductance is reduced. Further, since the electric length is shortened, it is possible to contribute to speeding up of the system.

FIG. 7 is a longitudinal sectional view for explaining a relationship between a contact and a through hole of a connector according to a second embodiment of the present invention. FIG. 7A shows a state before electronic components are connected. FIG. 7B is a diagram showing a state after the electronic components are connected. Portions common to the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted.

In the above-described first embodiment, the case where the center line C ₁ of the through hole 2 is inclined with respect to the component connection direction D has been described, but in the second embodiment, FIG. As shown, the center line C ₁ of the through hole 102 is parallel to the electronic component connection direction D, and the coil spring 103 as a contact is such that the rod-shaped elastic member moves forward and backward from one end of the center line C ₂ to the other end. Are alternately repeated and spirally wound. On the other hand, the coil spring 3 of the first embodiment
Are those rod-shaped elastic member is spirally wound while constantly advanced from one end of the center line C ₂ to the other end. That is, the winding method of the rod-shaped elastic member is different from that of the coil spring 3 of the first embodiment, and the coil spring 103 of the second embodiment is a special coil spring. Note that the rod-shaped elastic member is a conductive metal, and this point is the same in the first embodiment. The coil spring 103 is supported by the supporting projection 101a in the through hole 102.

When the screw 7 is tightened, the spring portion 5b of the cover 5 presses the upper surface 8a of the LSI 8, and the insulator 1
A force in the electronic component connection direction D (thick arrow in FIG. 7B) acts on the upper and lower ends of the coil spring 103 in the through hole 102 of FIG. As a result, as shown in FIG. 7 (b), so that the center line C ₂ of the coil spring 103 is inclined with respect to the center line C ₁ of the through hole 102, the coil spring 103 is elastically deformed. At this time, the point that the outer peripheral surface of the upper end portion and the outer peripheral surface of the lower end portion of the coil spring 103 are deformed so as to be pressed against the inner peripheral surface of the through hole 2 is the same as in the first embodiment. When connecting electronic components, the adjacent helical windings 1
The point where the gap in the center line direction of 03a becomes zero is the same as in the first embodiment.

According to the connector of the second embodiment, the same effects as those of the first embodiment can be obtained.

FIG. 8 is a longitudinal sectional view for explaining a relationship between a contact and a through hole of a connector according to a modification of the second embodiment of the present invention, and FIG. FIG. 8B is a diagram showing a state after the electronic components are connected. Portions common to the above-described first and second embodiments are denoted by the same reference numerals, and description thereof is omitted.

In the second embodiment, the through hole 102
The diameter of the coil spring 103 is equal from the upper end to the lower end, and the diameter of the coil spring 103 is equal from the upper end to the lower end. In this modification, as shown in FIG. The diameter of the middle part is larger than the diameter of both ends, and the diameter of the middle part of the coil spring 203 is larger than the diameter of both ends. In the case of this modification, the coil spring 203 is
02 so that it can be accommodated in the insulator 2
01 in the component connection direction D (the upper insulator 2
01a and the lower insulator 201b).

The point that the center line C ₁ of the through-hole 202 of the insulator 201 is parallel to the component connection direction D, the basic structure of the coil spring 203 (the rod-shaped elastic member moves from one end of the center line C ₂ to the other end) The structure of spirally winding while alternately retreating) is the same as that of the second embodiment.

According to the connector of this modified example, the second
The same effect as the embodiment can be obtained,
There is no need to provide a supporting projection for supporting the coil spring 203 on the inner peripheral surface of the through hole 202.

FIG. 9 is a longitudinal sectional view for explaining a relationship between a contact and a through hole of a connector according to a third embodiment of the present invention. FIG. 9A shows a state before a connection electronic component. FIG. 9B is a diagram showing a state after the electronic components are connected. Portions common to the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted.

In the third embodiment, the contact is
First and second bottomed cylindrical portions 3 slidably fitted to each other
03a, 303b, and an elastic body (for example, a columnar rubber or a conductive rubber) 303c housed in the fitted first and second bottomed cylindrical portions 303a, 303b. The inner diameter of the first bottomed cylindrical portion 303a is slightly larger than the outer diameter of the second bottomed cylindrical portion 303b. The upper surface of the elastic body 303c is in surface contact with the first bottomed cylindrical portion 303a, and the lower surface of the elastic body 303c is in surface contact with the second bottomed cylindrical portion 303b. The first and second bottomed cylindrical portions 3
03a and 303b are formed of a conductive metal. Also, the center line C ₁ of the through hole 302 of the insulator 301.
Is the same as the second embodiment in that it is parallel to the component connection direction D.

When the screw 7 is tightened, the spring portion 5b of the cover 5 presses the upper surface 8a of the LSI 8, and as shown in FIG. 9B, the first and second bottomed cylindrical portions 303a, 303b
Move toward each other. At this time, the elastic body 303c
Is contracted in the component connection direction D, and the intermediate portion of the elastic body 303c expands in the radial direction. The elastic force of the elastic body 303c is the first
Of the bottomed cylindrical portion 303a to the land 8b of the LSI 8,
The bottomed cylindrical portion 303b of the printed circuit board 9 to the land 9b.
Act to press each. Also, since the intermediate portion of the elastic body 303c expands in the radial direction, the cylindrical portion 360 of the second bottomed cylindrical portion 303b is connected to the first bottomed cylindrical portion 30.
3a, the first cylindrical portion 303 having a bottom.
a and the second bottomed cylindrical portion 303b are stably contacted.

According to the connector of the third embodiment, the same effects as those of the first embodiment can be obtained.

[0047]

As described above, the first, second or fourth aspect of the present invention is described.
ADVANTAGE OF THE INVENTION According to the connector of the described invention, the elastic force of a contact acts, the dimensional error of an electronic component is absorbed, contact stability is obtained, and the path of electrical conduction is linear and short, and inductance is reduced. . Further, since the electric length is shortened, it is possible to contribute to speeding up of the system.

According to the connector of the third aspect of the present invention,
It is not necessary to provide a supporting projection for supporting the coil spring on the inner peripheral surface of the through hole.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view for explaining a relationship between a contact and a through hole of a connector according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view for explaining the entire structure of the connector according to the first embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of the connector.

FIG. 4 is a longitudinal sectional view of the connector.

FIG. 5 is a view showing a state before assembling the connector.

FIG. 6 is a diagram showing a state after the connector is assembled.

FIG. 7 is a longitudinal sectional view for explaining a relationship between a contact and a through hole of a connector according to a second embodiment of the present invention.

FIG. 8 is a longitudinal sectional view for explaining a relationship between a contact and a through hole of a connector according to a modification of the second embodiment of the present invention.

FIG. 9 is a longitudinal sectional view for explaining a relationship between a contact and a through hole of a connector according to a third embodiment of the present invention.

FIG. 10 is a longitudinal sectional view for explaining a relationship between a contact and a through hole of a conventional connector.

[Explanation of symbols]

1, 101, 201, 301 Insulator 1a, 101a Supporting projection 2, 102, 202, 302 Through hole 3, 103, 203 Coil spring 8 LSI 8b, 9b Land 9 Printed circuit board 201a Upper insulator 201b Lower insulator 303 Contact 303a First center line D electronic part connecting direction of the center line C ₂ contacts of the bottomed cylindrical portion 303b second bottomed cylindrical portion 303c elastic member C ₁ through hole of

Claims (4)

[Claims] 1. A connector for electrical connection between electronic components having a plurality of lands, comprising: an insulator having a plurality of through holes corresponding to the lands; and an insulator housed in the through holes and arranged on one side of the insulator. A contact for electrically connecting one of the lands of the electronic component and the land of the other electronic component disposed on the opposite side of the insulator, wherein the contact is a coil spring, and a center line of the through hole is an electron. A connector characterized by being inclined with respect to a component connection direction. 2. A connector for electrical connection between electronic components having a plurality of lands, comprising: an insulator having a plurality of through holes corresponding to the lands; and an insulator housed in the through holes and arranged on one side of the insulator. And a contact for electrically connecting the land of one of the electronic components and the land of the other electronic component disposed on the opposite side of the insulator, wherein the center line of the through hole is parallel to the electronic component connection direction. The contact is a coil spring, and the coil spring is formed by spirally winding a rod-shaped elastic member from one end to the other end of the center line while alternately repeating advance and retreat. 3. The semiconductor device according to claim 1, wherein a diameter of an intermediate portion of the through hole is larger than diameters of both ends, a diameter of an intermediate portion of the contact is larger than diameters of both ends, and the insulator is divided in an electronic component connection direction. 3. The connector according to claim 2, wherein: 4. A connector for electrically connecting electronic components having a plurality of lands, comprising: an insulator having a plurality of through holes corresponding to the lands; and an insulator housed in the through holes and arranged on one side of the insulator. And a contact for electrically connecting the land of one of the electronic components and the land of the other electronic component disposed on the opposite side of the insulator, wherein the center line of the through hole is parallel to the electronic component connection direction. The contact has first and second bottomed cylindrical portions that are slidably fitted to each other, and an elastic body that is housed in the first and second bottomed cylindrical portions in the fitted state. A connector characterized in that: