JPH0338781Y2 - - Google Patents

Description

[Detailed explanation of the invention] "Industrial application field" This invention is useful for connecting two pin contacts, such as connecting the terminal pin of an IC (integrated circuit) to a pin conductor attached to a printed circuit board. Concerning the connector to use.

``Prior art'' As a type of IC socket used to removably mount an IC on a printed circuit board, the terminal pin is inserted in the axial direction and then slid in a direction perpendicular to the axial direction. There is one in which a pin is brought into contact with a socket contactor with a predetermined contact force.
FIGS. 5 and 6 each show an example of a conventional connector of the type that requires no insertion/extraction force.

In the case shown in Fig. 5, the terminal pin 1 is inserted in the axial direction at a position away from the leaf spring-shaped socket contact 2 as shown in Fig. 5A, and then the terminal pin 1 is inserted as shown in Fig. 5B. It is brought into contact with the socket contactor 2 by sliding it toward the socket contactor 2 side. Moreover, the one shown in FIG. 6 has a pair of spring pieces 4 and 5 facing each other as a socket contact 3, and contact portions 4a and 5a protruding inward are formed on each spring piece 4 and 5. , and connect the terminal pin 1 to the spring piece 4 of the socket contact 3,
After axial insertion in a lateral position between 5 and 5,
The terminal pin 1 is slid toward the socket contact 3, inserted between the spring pieces 4 and 5, and inserted between the contact portions 4a and 5a.

``Problems to be solved by the invention'' However, the conventional connector shown in FIG. 5 obtains a predetermined contact force by biasing the leaf spring-shaped socket contact 2,
requires a large driving force equal to the contact force,
It has the disadvantage that it is not suitable for devices with a large number of pins, such as LSIs (large-scale integrated circuits) with a large number of pins. In addition, the conventional connector shown in FIG. 6 requires only the driving force needed to widen the distance between the pair of spring pieces 4 and 5 of the socket contactor 3, and generally the driving force can be smaller than that of the connector shown in FIG. However, if the terminal pin 1 is thin, the terminal pin 1 will be inserted between the spring pieces 4 and 5, and the contact portion 4 will be inserted between the spring pieces 4 and 5.
There is a risk that it will be bent when intervening between a and 5a.

Therefore, this invention was developed in a connector that connects a pin conductor by inserting a terminal pin in the axial direction and then sliding it in a direction perpendicular to the axial direction. Can be connected with a predetermined contact force,
Therefore, it can be applied to devices with a large number of pins, and the terminal pins and pin conductors are prevented from being bent when connecting the terminal pins and the pin conductors.

``Means for Solving the Problems'' The connector of this invention includes an upper housing, a lower housing, and a socket contact.

A pin insertion hole is formed on one side of the upper housing, and a contact chamber communicating with the pin insertion hole is formed on the opposite side. The contact chamber has a main wall surface that comes into close contact with the terminal pin inserted into the contact chamber from the pin insertion hole, and a sub wall surface that faces the main wall surface.

The lower housing is disposed on the opposite side of the upper housing. A pin insertion hole is formed in the lower housing facing the surface opposite to the upper housing, and a contact chamber communicating with the pin insertion hole is formed facing the surface of the upper housing. This contact chamber has a main wall surface that comes into close contact with the pin conductor inserted into the contact chamber from the pin insertion hole,
The contact chamber between the main wall surface and the upper housing is formed to have a sub-wall surface facing in a direction opposite to the direction from the main wall surface to the sub-wall surface.

Each of the socket contacts has a first wire that is long in one direction.
and a second metal piece, one end of each of the first and second metal pieces serving as a pin contact portion. The first and second metal pieces face each other with their respective pin contact portions facing in opposite directions, each other end protruding from the other pin contact portion in the longitudinal direction, and are integrated at their respective central portions. Concatenated.
In this socket contact, the pin contact portion side of the first metal piece and the other end side of the second metal piece are located in the contact chamber of the upper housing on the secondary wall side thereof, and the pin contact portion of the first metal piece is located within the contact chamber of the upper housing. The second metal piece is inserted facing the main wall surface, and the pin contact side of the second metal piece and the other end side of the first metal piece are located in the contact chamber of the lower housing on the secondary wall side thereof, and the second metal piece The metal piece is inserted with the pin contact portion facing the main wall surface.

A pin conductor is inserted into the contact chamber through the pin insertion hole in the lower housing, and a terminal pin is inserted into the contact chamber through the pin insertion hole in the upper housing. After the pin conductor and terminal pin have been inserted, the upper housing is slid relative to the lower housing in the direction from the major wall to the minor wall in the contact chamber of the upper housing, thereby causing the socket contact to The terminal pin and the pin conductor are connected by pressing the terminal pin against the main wall surface of the upper housing and pressing the pin conductor against the main wall surface of the lower housing.

"Function" In the connector of this invention configured as described above, the pin conductor is placed along the main wall surface of the lower housing between the main wall surface and the pin contact portion of the second metal piece, and the terminal pin is placed in the upper part of the lower housing. It can be inserted along the main wall surface of the housing between the main wall surface and the pin contact portion of the first metal piece without requiring any force.

With the pin conductor and terminal pin inserted in this manner, when the upper housing is slid relative to the lower housing in the direction from the main wall surface to the secondary wall surface in the contact chamber of the upper housing, the socket contactor By tilting, the other end of the second metal piece contacts the secondary wall surface of the upper housing, the other end of the first metal piece contacts the secondary wall surface of the lower housing, and the pin contact portion of the first metal piece contacts the secondary wall surface of the lower housing. The terminal pin is pressed against the main wall surface of the upper housing, and the pin contact portion of the second metal piece presses the pin conductor against the main wall surface of the lower housing, so that the terminal pin and the pin conductor are connected via the socket contact. At this time, the force applied to the socket contact from the main wall surfaces of the upper and lower housings, that is, the contact force of the terminal pin and pin conductor to the socket contact, is P, and the force applied to the socket contact from the secondary wall surfaces of the upper and lower housings is P. The force is F, the distance from the point of contact of the socket contact with the terminal pin to the point of contact with the pin conductor is l, and the distance from the point of contact of the socket contact with the secondary wall of the upper housing to the point of contact with the secondary wall of the lower housing If the distance is L, then P.l=F.L from moment balance, so the driving force per socket contact becomes W=P-F=(1-l/L)P. Therefore, by setting l/L to a value close to 1, the driving force W can be made considerably smaller than the contact force P, and the small driving force allows the terminal pin and the pin conductor to be connected to a predetermined position via the socket contact. Can be connected by contact force.

Further, since the terminal pin is inserted along the main wall surface of the upper housing and is pressed against the main wall surface of the upper housing by the socket contact, the terminal pin will not be bent during connection. The same applies to pin conductors.

``Embodiment'' FIG. 1 shows a main part of an example of the connector of this invention, which is used to configure an IC socket.

The connector of this invention includes an upper housing 10,
It includes a lower housing 20 and a socket contact 30.

A pin insertion hole 11 is formed in the upper housing 10 facing the upper surface 10a, and a pin insertion hole 11 is formed in the upper surface 10a.
A contact chamber 12 is formed facing b and communicating with the pin insertion hole 11. The contact chamber 12 has a terminal pin inserted into the contact chamber 12 from the pin insertion hole 11, in this example.
Main wall surface 12m in close contact with terminal pin 50 of LSI40
It has a secondary wall surface 12s facing the main wall surface 12m. The secondary wall surface 12s is somewhat inclined with respect to the main wall surface 12m. Furthermore, a groove 12d is formed in the upper part of the contact chamber 12 on the side of the sub-wall surface 12s. The pin insertion holes 11 and the contact chambers 12 are arranged in accordance with the arrangement of the terminal pins 50 of the LSI 40.

The lower housing 20 is arranged on the lower surface 10b side of the upper housing 10. In the lower housing 20, a pin insertion hole 21 is formed facing the lower surface 20a, and a pin insertion hole 21 is formed facing the upper surface 20b.
A contact chamber 22 is formed which communicates with the contact chamber 22 . Contact chamber 22
is the main wall surface 22m that is in close contact with the pin conductor inserted into the contact chamber 22 from the pin insertion hole 21, in this example, the pin conductor 70 attached to the printed circuit board 60.
And, from this main wall surface 22m and the main wall surface 12m in the contact chamber 12 of the upper housing 10 to the secondary wall surface 12s
It has 22 s of sub-wall surfaces which oppose in the direction opposite to the direction to. The secondary wall surface 22s is somewhat inclined with respect to the main wall surface 22m. In addition, a sub-wall surface 2 is provided at the bottom of the contact chamber 22.
A groove 22d is formed on the 2s side. The pin insertion holes 21 and the contact chambers 22 are arranged in accordance with the arrangement of the pin conductors 70 on the printed circuit board 60, that is,
The terminal pins 50 are arranged in accordance with the arrangement of the terminal pins 50 of the LSI 40.

As shown in FIG. 2, the socket contact 30 has first and second metal pieces 31 and 32, each of which is elongated in one direction. metal pieces 31 and 3
One end portions of the pin contact portions 2 are bent into semicircular shapes to form pin contact portions 31a and 32a. The metal pieces 31 and 32 have respective pin contact portions 31a.
and 32a are reversed, that is, both facing outward on longitudinally opposite sides of each other, facing each other with their respective other ends 31b and 32b projecting longitudinally from the other pin contact portions 32a and 31a, Connecting part 33 at the center of each
are connected together. Specifically, such a socket contact 30 has an approximately H shape with bent portions forming pin contact portions 31a and 32a.
It is formed by folding a single metal plate in the center.

This socket contactor 30 has the pin contact portion 31a side of the metal piece 31 and the other end 32b side of the metal piece 32 inside the contact chamber 12 of the upper housing 10, and the pin contact portion 31a of the metal piece 31 facing the main wall surface 12m. , the other end 32b of the metal piece 32 is inserted into the groove 12d, and the pin contact portion 32a side of the metal piece 32 and the other end 31b side of the metal piece 31 are inserted into the contact chamber 22 of the lower housing 20. The pin contact portion 32a faces the main wall surface 22m, and the other end 31b of the metal piece 31 is inserted into the groove 22d.

In this way, a connector in which the upper housing 10 and the lower housing 20 are arranged one above the other, and the socket contacts 30 are inserted into the contact chambers 12 and 22,
Printed circuit board 60 with pin conductor 70 attached
As shown in FIG. 1A, the pin conductor 7
0 into the contact chamber 22 through the pin insertion hole 21 of the lower housing 20, and the terminal pin 50 of the LSI 40 is inserted into the contact chamber 12 through the pin insertion hole 11 of the upper housing 10. At this time, the pin conductor 70 is inserted along the main wall surface 22m of the contact chamber 22 between the main wall surface 22m and the pin contact portion 32a of the metal piece 32, and the terminal pin 50 is inserted along the main wall surface 12m of the contact chamber 12. Pin contact part 3 between main wall surface 12m and metal piece 31
1a, so that the pin conductor 70 and the terminal pin 50 can be inserted without requiring any force.

After inserting the pin conductor 70 and the terminal pin 50 in this manner, the upper housing 10 is inserted into the contact chamber 1 of the upper housing 10 relative to the lower housing 20.
2 from the main wall surface 12m to the sub-wall surface 12s. As a result, the socket contact 30 is attached to the upper housing 10 as shown in FIG. 1B.
is tilted in the clockwise direction in FIG. 1 with respect to the state before sliding, and the other end 32b of the metal piece 32 is
s, and the other end 31b of the metal piece 31 is in contact with the secondary wall surface 2.
2s, the pin contact portion 31a of the metal piece 31 presses the terminal pin 50 against the main wall surface 12m, and the metal piece 3
The pin contact portion 32a of No. 2 connects the pin conductor 70 to the main wall surface 2.
2 m, the terminal pin 50 is connected to the pin conductor 70 via the socket contact 30. That is, the LSI 40 is mounted on the printed circuit board 60.

In this case, as shown in Figure 3, the main wall surface is 12 m long.
The force applied to the socket contact 30 from the terminal pin 50, that is, the contact force of the terminal pin 50 to the socket contact 30, and the force applied to the socket contact 30 from the main wall surface 22m, that is, the force applied to the socket contact 30 of the pin conductor 70.
0, P is the force applied to the socket contact 30 from the sub-wall surfaces 12s and 22s, F is the distance from the contact point of the socket contact 30 with the terminal pin 50 to the contact point with the pin conductor 70, From the contact point of the socket contactor 30 with the secondary wall surface 12s to the secondary wall surface 22
If the distance to the point of contact with s is L, then P・l=F・L from moment balance, so the driving force per socket contact 30 is W=P−F=(1− l/L)P. Therefore, by setting l/L to a value close to 1, the driving force W can be made considerably smaller than the contact force P, and the small driving force causes the terminal pin 50 to be connected to the pin conductor via the socket contact 30. 70
can be connected with a predetermined contact force.

As described above, since the terminal pin 50 is inserted along the main wall surface 12m and is pressed against the main wall surface 2m by the socket contactor 30, the terminal pin 50 will not be bent during connection. pin conductor 7
The same applies to 0.

FIG. 4 shows an entire example of the connector of this invention having the above-described configuration.

The lower housing 20 is fitted into the lower part of the frame 80, and the upper housing 10 is fitted into the upper part of the frame 80 in contact with the lower housing 20. A, B and D are allowed to slide laterally. Of course, the socket contacts 30 are inserted into the contact chamber 12 of the upper housing 10 and the contact chamber 22 of the lower housing 20.

The upper housing 1 is attached to one end 81 of the frame 80.
0, a slot 82 extending from one side 80a of the frame 80 to the other end 80b
is formed. The slot 82 is located in the upper housing 10.
A portion facing one end surface 10c is approximately semicircular, and one end of the frame 80 on the one side 80a side and the other end of the frame 80 on the other end side 80b are circular. A cam 91 having a shape along the slot 82 is inserted into the slot 82 . At one end of the cam 91,
A retaining collar 91a is formed. The other end of the cam 91 faces the outside of the frame 80, and a lever 92 for rotating the cam 91 is attached to this.

As shown in A, B and C of the same figure, the lever 92
When the cam 91 is perpendicular to the upper surface 10a of the upper housing 10, the cam 91 is completely inserted into the slot 8.
2, and the upper housing 10 is biased by the spring force of the socket contactor 30 to a position where one end surface 10c contacts the one end 81 of the frame 80, and the upper housing 10 and the lower housing 20 are arranged as shown in FIG. 1A.
It is in the state shown in. As described above, the connector is placed on the printed circuit board 60 in this state, and the pin conductor 70 attached to the printed circuit board 60 is inserted into the lower housing as shown in FIG. 20, and then insert the terminal pins 50 of the LSI 40 into the upper housing 10.

Next, as shown in FIG. 4D, the lever 92 is
The upper surface 10a of the upper housing 10 is rotated by 90 degrees.
parallel to. As a result, cam 9
1 rotates 90 degrees against the spring force of the socket contactor 30 while turning the upper housing 10 to the right in FIG.
Then, the socket contact 30 is in the state shown in FIG. 1B, and the terminal pin 50 is connected to the pin conductor 70 via the socket contact 30 as described above.
The LSI 40 is mounted on the printed circuit board 60.

When the lever 92 is rotated 90 degrees in the opposite direction from this state, the cam 91 completely returns to the slot 82.
The upper housing 10 slides to the left in FIG.
Then, the socket contact 30 is in the state shown in FIG. 1A. In this state, terminal pin 50 of LSI40
is removed from the upper housing 10 and the LSI 40 is removed from the printed circuit board 60. No force is required to remove the terminal pin 50.

"Effects of the invention" According to this invention, it is possible to connect the terminal pin and the pin conductor with a predetermined contact force through the socket contact with a small driving force, and therefore it can be applied to devices with a large number of pins. In addition, the terminal pin and the pin conductor will not be bent when connecting the terminal pin and the pin conductor.

[Brief explanation of drawings]

Figure 1 shows the main parts of an example of the connector of this invention, A is a cross-sectional view of the state in which the terminal pin and the pin conductor are not connected with a predetermined contact force, and B is a cross-sectional view of the state where the terminal pin and the pin conductor are connected with a predetermined contact force. FIG. 2 is a perspective view showing an example of a socket contact;
Fig. 3 is a diagram for explaining the relationship between contact force and driving force, Fig. 4 shows an entire example of the connector of this invention, A is a plan view, B is a front view with a part cut away, and C is a side cross-sectional view, D is a front view partially cut away with the LSI mounted on the printed circuit board from the connector, FIG. 5 is an example of a conventional connector,
is a front view with the terminal pin open, B is a front view with the terminal pin in contact with the socket contact,
FIG. 6 shows another example of a conventional connector, in which A is a front view with the terminal pins open and B is a side view of the same state.

Claims (1)

[Claim for Utility Model Registration] A pin insertion hole is formed facing one side, and a contact chamber communicating with the pin insertion hole is formed facing the opposite side, and this contact chamber is connected to the pin insertion hole. an upper housing having a main wall surface that comes into close contact with the terminal pin inserted into the contact chamber, and a sub-wall surface that faces the main wall surface; A pin insertion hole is formed facing the side surface, and a contact chamber communicating with the pin insertion hole is formed facing the upper housing side surface. a lower housing having a main wall surface that comes into close contact with a pin conductor inserted in the upper housing, and a sub-wall surface that faces in a direction opposite to the direction from the main wall surface to the sub-wall surface in the contact chamber between the main wall surface and the upper housing; First and second metal pieces that are long in one direction and serve as pin contact portions face each other with their respective pin contact portions facing in opposite directions and each other end protruding in the longitudinal direction from the other pin contact portion. and are integrally connected at their respective central portions, and the pin contact portion side of the first metal piece and the other end side of the second metal piece are located within the contact chamber of the upper housing and on the side of the secondary wall surface. , the pin contact part of the first metal piece is inserted in a state facing the main wall surface, and the pin contact part side of the second metal piece and the other end side of the first metal piece are connected to the lower housing. The pin conductor is inserted into the contact chamber from the pin insertion hole of the lower housing, located on the side of the secondary wall surface, with the pin contact portion of the second metal piece facing the main wall surface. At the same time, after the terminal pin is inserted into the contact chamber from the pin insertion hole of the upper housing, the upper housing is moved relative to the lower housing,
By sliding from the main wall surface to the sub wall surface in the contact chamber of the upper housing, the terminal pin is pressed against the main wall surface of the upper housing, and the pin conductor is pressed against the main wall surface of the lower housing. and a socket contactor for connecting the terminal pin and the pin conductor.