JPH0329904Y2 - - 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, a terminal pin of the IC is inserted in the axial direction, and then a sliding member is moved in a direction perpendicular to the axial direction of the terminal pin. Some devices bring the terminal pin into contact with the socket contact with a predetermined contact force by sliding the terminal pin. Figures 6 and 7 are
Each of these is an example of a conventional connector of the type that requires no insertion/extraction force.

6, a cantilever type socket contact 2 implanted in a base insulator 1 is inserted into a contact chamber 4 formed in a cover insulator 3.
As shown in the figure, after inserting the terminal pin 9 of the IC 8 into the contact chamber 4 through the pin insertion hole 5 of the cover insulator 3, slide the cover insulator 3 against the base insulator 1 to the right in the figure. As a result, as shown in FIG. It is something to be brought into contact with.

The socket contactor 6 shown in FIG. 7 has a pair of opposing spring pieces 6a and 6b of different lengths arranged in a contact chamber 7 in which the spring pieces 6a and 6b are formed on the base insulator 1. The tip of the shorter spring piece 6a is inserted into the insulator 1, and the tip of the shorter spring piece 6a is engaged with the groove 7a formed in the upper part of the contact chamber 7.
Groove 3 with the tip of b formed on the bottom surface of cover insulator 3
b and cover insulator 3 to base insulator 1.
2. Slide the cover insulator 3 of the terminal pin 9 of the IC 8 from the state shown in FIG. After inserting the terminal pin 9 between the spring pieces 6a and 6b in the contact chamber 7 of the base insulator 1 through the pin insertion hole 5 and returning the cover insulator 3 to its original position, the terminal pin 9 is inserted into the spring as shown in FIG. It is held between the pieces 6a and 6b and brought into contact with the socket contactor 6 with a predetermined contact force.

``Problems to be Solved by the Invention'' However, the conventional connector shown in FIG. In the conventional connector shown, when sliding the cover insulator 3 to widen the distance between the spring pieces 6a and 6b,
Each terminal pin 9 requires a large driving force equivalent to the contact force, and is a PGA (pin grid array) type LSI (large scale integrated circuit) with several hundred pins.
Elements with a large number of pins, such as the above, have disadvantages in terms of operability and component strength. Moreover, since the socket contacts 2 or 6 are fixed to the base insulator 1, the assembly becomes complicated, and these methods are not suitable for devices having a large number of terminal pins arranged at a high density.

Therefore, this invention was developed in a connector that connects a terminal pin to a pin conductor via a socket contact by inserting the terminal pin in the axial direction and then sliding a sliding member in a direction perpendicular to the axial direction of the terminal pin. , 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 adapted to devices with a large number of pins, and it is possible to connect the terminal pin and the pin conductor with a predetermined contact force using a small driving force. A large number of contact blocks can be formed at high density by reducing the space of the blocks, and even in such a case, assembly is easy.

``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. This contact chamber has a main wall surface that comes into close contact with the terminal pin inserted into this contact chamber from the pin insertion hole, and a tip that faces the main wall surface and is inserted into this contact chamber from the opposite surface side of the pin conductor. The shape has a sub-wall surface to which the parts are in close contact.

The lower housing is disposed on the opposite side of the upper housing. This lower housing includes
An opening is formed facing the surface opposite to the upper housing side, and a storage chamber communicating with the opening is formed facing the surface facing the upper housing side. This storage chamber has a shape having a main wall surface that comes into close contact with the pin conductor inserted into the storage chamber from the opening, and a sub-wall surface that faces in the direction from the sub-wall surface to the main wall surface in the contact chamber between the main wall surface and the upper housing. be made into
The lower housing is further formed with a locking portion on the side of the secondary wall of the storage chamber on the side facing the opening.

The socket contact is made of a metal plate that is elongated in one direction, and has a main contact portion and a sub-contact portion opposite to each other formed at one end thereof. This socket contact has a main contact portion facing the main wall surface of the contact chamber of the upper housing, a sub contact portion facing the sub wall surface of the contact chamber,
With the other end being locked to the locking part of the lower housing, it is stored across the contact chamber of the upper housing and the storage chamber of the lower housing.

A pin conductor is inserted into the contact chamber of the upper housing through the opening of the lower housing through the storage chamber, and a terminal pin is inserted into the contact chamber from the pin insertion hole of the upper housing. After the pin conductor and terminal pin are inserted, the lower housing is slid relative to the upper housing, the pin conductor, and the terminal pin in the direction from the secondary wall to the main wall in the storage chamber of the lower housing, thereby making socket contact. The other end of the terminal is pressed by the secondary wall of the storage chamber in the lower housing, the secondary contact part presses the pin conductor against the secondary wall of the contact chamber in the upper housing, and the main contact part presses the terminal pin against the main wall of the contact chamber. When pressed, the socket contact connects the terminal pin and the pin conductor.

"Function" In the connector of this invention configured as described above, the pin conductor is connected along the main wall of the storage chamber of the lower housing and the sub-wall of the contact chamber of the upper housing to the sub-wall of the contact chamber and the socket contactor. Insert the terminal pin along the main wall surface of the contact chamber of the upper housing between the main wall surface of the contact chamber and the main contact section of the socket contact without requiring any force. be able to.

With the pin conductor and terminal pin inserted in this way, if you slide the lower housing against the upper housing, the pin conductor, and the terminal pin in the direction from the secondary wall to the main wall in the storage chamber of the lower housing, socket contact will occur. The other end side of the socket contactor is pressed by the sub-wall surface of the storage chamber of the lower housing and bent toward the pin conductor, so that the sub-contact part of the socket contact presses the pin conductor against the sub-wall surface of the contact chamber of the upper housing, The main contact portion presses the terminal pin against the main wall surface of the contact chamber, and the terminal pin and the pin conductor are connected via the socket contact.

In this case, the force applied to the socket contact from the secondary wall of the storage chamber of the lower housing, that is, the driving force per terminal pin to the lower housing, is F, and the force applied to the socket contact from the main wall of the contact chamber of the upper housing is F. , that is, the contact force of the terminal pin to the socket contact is Pm, the force applied to the socket contact from the secondary wall of the contact chamber, that is, the contact force of the pin conductor to the socket contact is Ps, and the contact of the socket contact with the terminal pin If the distance from the point 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 pin conductor to the other end is L, then the moment around the point of contact of the socket contact with the pin conductor is From equilibrium, F・L=Pm・l, and since Ps=F+Pm, F=l/LPm<Ps, and the main contact part and sub contact part of the socket contact are on one end side of the socket contact. Since l<L, F<Pm<Ps, and with a small driving force, the terminal pin and the pin conductor can be connected with a predetermined contact force via the socket contactor.

``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.

In the upper housing 10, a circular pin insertion hole 11 is formed facing the top surface, and a contact chamber 12 communicating with the pin insertion hole 11 is formed facing the bottom surface. The contact chamber 12 has a terminal pin inserted into the contact chamber 12 from the pin insertion hole 11, in this example LSI4.
A main wall surface 12m that is in close contact with the terminal pin 50 of No. 0, and a pin conductor 70 that faces the main wall surface 12m and is attached to a pin conductor, in this example, a printed circuit board 60.
The contact chamber 12 has a sub-wall surface 12s with which the tip inserted into the contact chamber 12 from the lower surface side of the upper housing 10 comes into close contact. The upper part of the contact chamber 12, the main wall surface 12m and the sub wall surface 1 on the main wall surface 12m side and the sub wall surface 12s side.
The width in the direction perpendicular to the opposing direction of 2s is the first
As is clear from Figure E, Figures 2 and 3,
It is narrower than other parts. The pin insertion hole 11 and the contact chamber 12 are for the terminal pin 5 of the LSI 40.
It is formed in an array corresponding to the 0 array.

The lower housing 20 is arranged on the lower surface side of the upper housing 10. In the lower housing 20, an opening 21 is formed facing the bottom surface, and a storage chamber 22 communicating with the opening 21 is formed facing the top surface. The storage chamber 22 has a main wall surface 22m that is in close contact with the pin conductor 70 inserted into the storage chamber 22 from the opening 21.
From this main wall surface 22m and the secondary wall surface 12s in the contact chamber 12 of the upper housing 10 to the main wall surface 12m.
It has 22 s of sub wall surfaces which oppose in the direction to. As is clear from FIG. 3, the width of the main wall surface 22m and the secondary wall surface 22g of the storage chamber 22 in the direction perpendicular to the opposing direction is made equal to the width of the above-mentioned relatively wide portion of the contact chamber 12. . The opening 21 is such that the lower housing 20 is connected to the main wall surface 22 of the storage chamber 22 with respect to the pin conductor 70 inserted into the storage chamber 22 from the opening 21.
As is clear from FIG. 1D, it extends from the position of the main wall surface 22m to the position of the secondary wall surface 22s so that it can slide within a certain range in the direction in which the main wall surface 22m and the sub-wall surface 22s face each other. However, the width of the portion of the opening 21 on the side of the secondary wall 22s in the direction perpendicular to the direction in which the main wall 22m and the secondary wall 22s face each other is the width of the contact chamber 12.
Like the upper part of the opening 21, it is narrower than that of the part on the side of the main wall surface 22m, and on both sides of the narrow part of the opening 21 in the width direction, a locking part is formed that projects like a bank toward the storage chamber 22 side. Step portions 23x and 2
3y is formed. The opening 21, the storage chamber 22, and the stepped portions 23x and 23y are arranged in accordance with the arrangement of the pin conductors 70 on the printed circuit board 60.
The terminal pins 50 are arranged in accordance with the arrangement of the terminal pins 50 of the LSI 40.

The socket contact 30, as shown in FIG.
Consisting of one metal plate long in one direction, one end side is bent into an S shape, and a main contact part 31m is near the tip, and a sub contact part 31s opposite the main contact part 31m is near the center. It is formed. The width of the socket contact 30 corresponds to the above-mentioned width of the storage chamber 22, but the width of the main contact portion 31m, the tip portion 31a from this, and the tip portion 32a of the other end portion 32 are equal to the width of the contact chamber 22. 12 upper part and opening 21
The width is narrowed corresponding to the above-mentioned width of the portion on the side of the secondary wall surface 22s. The thickness of the main wall surface 12m and the sub-wall surface 12s of the above-mentioned wide portion of the contact chamber 12 in the opposing direction is slightly larger than the thickness from the main contact portion 31m to the sub-contact portion 31s of the socket contactor 30,
The distance between the main wall surface 12m and the secondary wall surface 12s of the contact chamber 12 is determined by the thickness of the socket contactor 30 and the terminal pin 5.
0 and the diameter of the pin conductor 70.

This socket contact 30 has a narrow tip portion 31a on one end side inserted into the narrow upper part of the contact chamber 12, and a wide portion on the one end side inserted into the narrow upper part of the contact chamber 12.
2, the main contact portion 31m faces the main wall surface 12m of the contact chamber 12, the sub contact portion 31s faces the sub wall surface 12s of the contact chamber 12, and the main contact portion 31m faces the main wall surface 12m of the contact chamber 12, and the With the narrow tip portion 32a of the other end 32 inserted between the steps 23x and 23y on the side of the secondary wall surface 22s, and the other end 32 being locked to the steps 23x and 23y, the upper It is housed across the contact chamber 12 of the housing 10 and the storage chamber 22 of the lower housing 20. In this case, the socket contacts 30 are inserted into the contact chamber 12 and the storage chamber 22 through the opening 21 in a series of pressed socket contacts 30, and then separated individually, and the narrow tip of the other end 32 is inserted. part 32a
It is only necessary to insert the end portion 32 between the stepped portion 23x and the stepped portion 23y and push the other end portion 32 toward the sub-wall surface 22s of the storage chamber 22, and assembly is easy. Also, since the wide part on the one end side is fitted into the wide part of the contact chamber 12, and the other end part 32 is locked to the steps 23x and 23y on the side of the secondary wall surface 22s of the storage chamber 22, the assembly The socket contact 30 will not rattle or fall out of the opening 21 later.

Although not shown, the upper housing 10 constitutes a frame or is fixed to the frame, and the lower housing 20 has a storage chamber 22 with respect to the upper housing 10.
The lower housing 20 is fitted into the frame so as to be able to slide within a certain range in opposing directions between the main wall surface 22m and the secondary wall surface 22s, and a cam that slides the lower housing 20 and a lever that rotates the cam are provided at one end of the frame. It will be done. When the lever is in a position perpendicular to the sliding direction of the lower housing 20, the lower housing 20 is in the position shown in FIG. 1A relative to the upper housing 10.

The connector with the above configuration has a lower housing 20
is in the position shown in FIG. 1A with respect to the upper housing 10, place the pin conductor 70 on the printed circuit board 60, and insert the pin conductor 70 into the storage chamber 22 through the opening 21 of the lower housing 20. and insert the terminal pin 50 of the LSI 40 into the contact chamber 12 of the upper housing 10.
0 into the contact chamber 12 through the pin insertion hole 11. At this time, as shown in FIG. 1A, the pin conductor 70 is connected to the main wall surface 22m of the storage chamber 22 and the contact chamber 1.
The terminal pin 50 is inserted between the secondary wall surface 12s and the secondary contact portion 31s of the socket contact 30 along the secondary wall surface 12s of the contact chamber 12, and the terminal pin 50 is inserted between the primary wall surface 12m and the socket contact 30 along the primary wall surface 12m of the contact chamber 12. , and 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 way, rotate the lever 90 degrees,
The lower housing 20 is oriented with respect to the upper housing 10, printed circuit board 60, pin conductor 70, LSI 40, and terminal pin 50 from the secondary wall surface 22s to the main wall surface 22m in the storage chamber 22 of the lower housing 20, that is, in FIG. 1A. slide it to the left. As a result, as shown in FIG. 1B, the other end 32 side of the socket contact 30 is connected to the lower housing 2.
The socket contact 30 is pressed by the sub-wall surface 22s of the storage chamber 22 and bent toward the pin conductor 70, and the sub-contact part 31a of the socket contactor 30 presses the pin conductor 70 against the sub-wall surface 12s of the contact chamber 12, and the main contact part 31m terminal pin 5
0 is pressed against the main wall surface 12m of the contact chamber 12, the terminal pin 50 is connected to the pin conductor 70 via the socket contactor 30, and the LSI 40 is mounted on the printed circuit board 60.

In this case, as shown in FIG. The force applied to the socket contactor 30 from the wall surface 12m, that is, the contact force of the terminal pin 50 to the socket contactor 30, is Pm, and the force applied to the socket contactor 30 from the secondary wall surface 12s of the upper housing 10, that is, the contact force of the pin conductor 70. The contact force to the socket contact 30 is Ps, 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 is l, and from the contact point of the socket contact 30 with the pin conductor 70 If the distance to the other end is L, then from the balance of the moment around the contact point of the socket contactor 30 with the pin conductor 70, F・L=Pm・l, and since Ps=F+Pm, F=l/ LPm<Ps, and since the main contact part 31m and the sub-contact part 31s of the socket contact 30 are on one end side of the socket contact 30, and l<L, F<Pm<Ps, and the driving force is small. This allows the terminal pin 50 to be connected to the pin conductor 70 via the socket contact 30 with a specified contact force.

When the lever is rotated 90 degrees in the opposite direction from this state, the lower housing 20 slides to the right in FIG. The state shown in Figure 1A is reached. In this state, terminal pin 5 of LSI40
0 from the upper housing 10, and remove LSI40 from the upper housing 10.
is removed from the printed circuit board 60. terminal pin 50
No force is required to remove it.

"Effects of the Invention" According to this invention, the terminal pin and the pin conductor can be connected with a predetermined contact force through the socket contactor with a small driving force, and the invention can be applied to an element with a large number of pins. Moreover, the socket contact only needs to be flat and narrow, and the terminal pin does not slide in a direction perpendicular to its axis.
The space of the contact block for one terminal pin can be reduced, a large number of contact blocks can be formed at high density, and even in this case, assembly of the connector becomes easy.

[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. C, D, E, and F are partial cross-sectional views on the C-C line, D-D line, E-E line, and F-F line of A, respectively. Fig. 3 is a partial sectional view taken along the - line of Fig. 1 A, Fig. 4 is a perspective view showing an example of a socket contact, Fig. 5 is a contact force and driving force. Figures 6 and 7 each show an example of a conventional connector, and A is a cross-sectional view of the state in which the terminal pin is not in contact with the socket contact;
B is a cross-sectional view of the terminal pin in contact with the socket contactor.

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 from the pin insertion hole. an upper housing having a main wall surface in close contact with a terminal pin inserted into the contact chamber; and a sub-wall surface facing the main wall surface and in close contact with a tip end of the pin conductor inserted into the contact chamber from the opposite surface side; , disposed on the opposite surface of the upper housing, having an opening facing the surface opposite to the upper housing, and forming a storage chamber communicating with the opening facing the upper housing side. and the storage chamber has a main wall surface that comes into close contact with the pin conductor inserted into the storage chamber from the opening, and a sub-wall surface that faces the main wall surface in the direction from the sub-wall surface to the main wall surface in the contact chamber. , a lower housing in which a locking part is formed on the side of the secondary wall facing the opening, and a metal plate that is long in one direction, and a main contact part and a secondary contact part are formed in opposite directions on one end side. is,
The main contact part faces the main wall surface of the contact chamber, the sub contact part faces the sub wall surface of the contact chamber, and the other end is locked to the locking part, and the contact chamber is connected to the contact chamber. A pin conductor is inserted into the contact chamber from the opening through the storage chamber, and a terminal pin is inserted into the contact chamber from the pin insertion hole. By sliding the housing with respect to the upper housing, the pin conductor, and the terminal pin in the direction from the sub-wall surface to the main wall surface of the storage chamber, the other end side is pressed by the sub-wall surface of the storage chamber. , the sub-contact part presses the pin conductor against the sub-wall surface of the contact chamber, and the main contact part presses the terminal pin against the main wall surface of the contact chamber, thereby connecting the terminal pin and the pin conductor. A connector comprising a contactor.