JPH02155181A - Ic connector - Google Patents

Abstract

PURPOSE:To prevent separation of an IC package in the direction opposite to the loading direction and achieve electric contact by causing an elastic contact segment, constituting a contact of a connector, to engage a shoulder segment of an IC reed base. CONSTITUTION:An IC package 1 is loaded into a connector 4 with a contact 6 being elastically displaced backwardly, and when a contact segment 6a of the contact 6 reaches a shoulder segment 3a of an IC reed 3 the segment 6a elastically returns to original form, and the shape of the L-shaped shoulder segment 3a is utilized to cause an engaging part 6d provided at the free end of the contact 6 to abut the outer surface thereof with elastic pressure to achieve sure hooking engagement effect for every IC reed 3. Thus, by the cooperation of the IC reed 3 and the contact 6, the IC package 1 can be retained properly in the connector, so that accidental flotation and separation of the IC package 1 due to vibration and shock, etc., can be prevented, and at the same time, good electrical contact between the IC reed 3 and the contact 6 can be achieved by the engaging part 6d.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a connector for an IC package in which IC leads are arranged along the sides.

Prior Art and Problems Some IC packages are called J-bend type, depending on the shape of their leads. This involves protruding a shoulder piece to the side from the side of the IC package body, then bending a bent piece from the shoulder piece along the side of the TC package, and bending the tip of the bent piece inward into a U-shape. Refers to those with a deep IC lead.

Also, an IC package having an IC lead in which the U-shaped bent piece of the J-bend type IC lead is removed is also in practical use, and like the former, the IC lead is configured in a U-shape along the side of the IC package body. It has a basic form.

Therefore, the connector used when mounting these on a printed wiring board, for example, establishes electrical contact by elastically pressing a contact against the outer surface of the bent piece of the IC lead, and A mechanism is used to hold the IC package through frictional contact, but since it relies on mere friction, there are cases where the pushing is insufficient, and the IC package may rise above the connector due to vibration or impact.
There is a risk that the wires may come off, which may further impair the reliability of electrical contact.

Purpose of the Invention The present invention provides an IC package such as the above-mentioned J-bend type,
The IC lead of the IC package and the contact of the connector make and maintain good electrical contact, and the IC package is properly held to the connector by the cooperation of the IC lead and the contact. The present invention provides a connector designed to allow

DESCRIPTION OF THE INVENTION The present invention has been constructed to achieve the above-mentioned object, and as will be described in detail in the embodiments to be described later, the elastic contact pieces constituting the contacts of the connector can be used in a J-bend type IC package or the like. The free end of the elastic contact piece is elastically engaged with the shoulder piece of the IC lead base without contacting the bent piece that is the free piece of the IC lead formed as a contact part, and the loading direction of the IC package is The structure is designed to prevent separation in the opposite direction and to establish electrical contact.

Embodiments of the Invention The present invention will be described in detail below with reference to FIGS. 1 to 4, which are shown as embodiments.

In the figure, 1 shows an IC package called a J-bend type, and 2 shows an IC package main body consisting of a rectangular insulating board in which the IC is built.

The IC package 1 has a large number of IC leads 3 arranged in parallel on the side surface of the main body 2. The IC lead 3 includes a shoulder piece 3a that protrudes laterally from the side surface of the IC package main body 2, and a bent piece that is bent from the shoulder piece 3a along the side surface of the main body 2 toward the back side of the main body. 3b, and further includes a bent piece 3
It has a tip piece 3C folded back in a 0-shape from the tip of b to the bottom side of the main body 2.

On the other hand, 4 is a connector for the IC package 1, and 5 is a connector body made of an insulating material.
The peripheral wall 5a defines an IC storage chamber 5b. I
The C package 1 is housed in the IC housing chamber 5b, and the IC leads 3 disposed on its side faces the inner side of the peripheral wall 5a.

As shown in Figure 1, Zhou! l! 5 IC on the inner wall of a
Partition walls 7 in the depth direction (IC removal/insertion direction) of the storage chamber 5b are arranged side by side at equal intervals along the inner wall thereof, and are brought into contact with the TCIJ-dead 3 in the contact storage groove 8 formed between each partition wall 7. The contacts 6 are accommodated and separated from each other by a partition wall 7. Also surrounding wall 5
A tool insertion groove 9 is formed in the corner portion on the diagonal line of a by cutting the peripheral wall from the mouth end surface side.

The IC leads 3 are arranged at equal pitches on the four peripheral sides of the IC package, and correspondingly the contacts 6 are arranged on the four sides of the peripheral wall 5a.

The contact 6 is located outside the bent portion 3b of the IC lead 3 in the opposite direction to the bent portion 3b, that is, the bent portion 3
The elastic contact piece 6a is extended from the distal end side to the base side (shoulder piece 3a side). The elastic contact piece 6a has its proximal end planted in the connector main body 5, and can be elastically displaced toward and away from the outer surface of the IC lead 3 using the planted portion 6C as a fulcrum. Reference numeral 6b is a male terminal projecting from the planting part to the lower side of the connector.

Thus, the elastic contact piece 6a, which is elastically displaceable as described above,
The free end of the shoulder piece 3d of the IC lead 3 is engaged with the outer surface of the shoulder piece 3d of the IC lead 3 by its inward elastic restoring force. As the engagement means, the free end of the elastic contact piece 6a is curved toward the IC lead side, and the engagement portion (
) 6d which also serves as a contact component. The engaged state is I
This is obtained by loading the C package 1 into the IC storage chamber 5b from the tip side of the elastic contact piece 6a of the IC lead 3.

That is, the loading of the RC package proceeds as the outer surface of the bent piece 3b pushes the retaining part 6d of the elastic contact piece 6a outward against its elasticity, and when a certain loading amount is reached, the elastic The engaging portion 6d at the free end of the contact piece 6a is bent by the bent portion 3.
While sliding on the outer surface of shoulder piece 3d, it comes to engage with the outer surface of shoulder piece 3d.

The engagement between the engaging portion 6d of the protruding end of the elastic contact piece 6a and the shoulder piece 3a prevents the IC package 1 from being easily removed in the opposite direction to the loading direction, and also prevents the IC package 1 from being easily removed in the direction opposite to the loading direction. Configure points of contact.

Figures 32A and 32B, 3 and 4 show several embodiments constructed in accordance with the above description.

Figure 2 A and B show contact 6 with a single highly elastic plate strip.
The contact piece 6a is provided tilted forward from the planting part 6c toward the IC lead, and the engaging part 6d is formed by bending the forward tilted end toward the IC lead. When the part 6d is inserted into the IC package, as shown in FIG. 2A, it is bent backward against the elasticity while abutting the outer surface of the bent part 3b of the IC lead 3, and is restored to the shoulder part 3a. The IC package is brought into contact and engaged with elasticity in the direction shown by the arrow in FIG. be. In the above engaged state, the bottom surface of the IC package body 2 is connected to the support wall 5d at the inner bottom of the IC storage chamber 5b.
obtained in a state supported by.

In Fig. 3, the contact 6 is formed of a single highly elastic plate strip, and the elastic contact piece 6a is tilted forward from the planting part 6C in the same manner as above to impart good springiness and to The strip portion connected to the base of the elastic contact piece 6a is folded in two and raised to form the implant leg piece 6e, which is press-fitted into the implant hole 5C formed on the inner surface of the peripheral wall 5a of the connector main body 5. The male terminal 6 is inserted from the end of the leg piece 6e for implantation into the peripheral wall.
In this embodiment, a second contact portion 6f (an engaging portion 6d) is provided directly below the engaging portion 6d that engages with the shoulder piece 3a of the Ic lead 3. is the first contact portion), and the second contact portion 6f is connected to the end of the bent portion near the bent corner formed in the continuous portion between the shoulder piece 3a and the bent portion 3b. The structure is such that they are brought into elastic contact.

The advantage of the above-mentioned embodiment is that some of the contacts 6 may be uneven due to manufacturing errors, and there is a possibility that play may occur between the engaging portion 6d and the shoulder piece 3a, resulting in poor contact.

In this case, the contact piece 6 restores itself until the second contact part 6f comes into contact with the IC lead 3 to ensure contact, and the engaging part 6d is in a state where it can be held on the shoulder piece 3a when the IC package tries to float. placed in The IC package 1 housed in the IC housing chamber 5b and held by the elasticity of the contacts 6 is removed by inserting a tool into the tool insertion groove 9 shown in FIG.

Furthermore, FIG. 4 shows that the contact 60 is engaged by the engaging part 6d which is the first contact part of the free end of the elastic contact piece 6a, and the contact is made by the second contact part 6f.
An elastic support piece 6g that supports the tip piece 3c of the C lead 3 is provided, and the IC lead tip piece 3 is supported by the support piece 6g.
A case is shown in which the entire IC package 1 is elastically supported by the support shown in FIG.

As described above, the contact piece 6a is connected to the shoulder piece 3a at the engaging part 6d.
Push the IC in the direction of the arrow in the figure to generate a downward component of force.
Always press the package body in the pushing direction. On the other hand, the elastic support piece 6g provides a push-up edge to the IC package body, and catches the IC package body 2 in a balanced manner between the elastic support piece 6g and the engaging portion 6d facing therebetween.

The elastic support piece 6g also functions as an electrical contact means with the IC lead 3, and cooperates with the contact piece 6a to achieve highly reliable contact.

Effects of the Invention As described in detail above, the present invention loads an IC package into a connector while elastically displacing the contacts backward, and causes the contact portions of the contacts to reach the shoulder portions of the IC leads and elastically restores their shape. Utilizing the U-shaped shape of the shoulder piece, the engaging part provided at the free end of the contact is brought into contact with the outer surface of the shoulder piece using its elastic pressure, ensuring a reliable contact with each IC lead. The hook can have an engaging effect. In addition to utilizing the shape of the shoulder piece, the engagement becomes more reliable by utilizing the shoulder piece with the highest strength.

According to the present invention, the IC package is normally held in the connector by the cooperation of the IC lead and the contact,
Effectively prevents the IC bag from accidentally floating or detaching due to photography, impact, etc. 6. At the same time, the above-mentioned retaining portion makes good electrical contact between the IC lead and the contact, and ensures the contact state. maintain.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of an RC connector according to an embodiment of the present invention, Fig. 2 is an enlarged cross-sectional view of the contact area between the IC lead and the contact, and Fig. A is the state of the IC package loading process. Figure B shows the same loaded state, Figure 3 is an enlarged sectional view of the contact area between the IC lead and contact showing another example, and Figure 4 is an enlarged view of the contact area between the IC lead and contact showing another example. FIG. DESCRIPTION OF SYMBOLS 1...IC package, 2...IC package body, 3...IC lead, 3a...shoulder piece, 3b...
Bent piece, 3C... Tip piece, 4... Connector, 5.
... Connector body, 6... Contact, 6a... Contact piece, 6d... Engagement part. Figure 2 (A) Figure 2 (B) Figure 3 b

Claims (1)

[Claims] The IC package has a plurality of I-shaped parts, each having a shoulder piece projecting laterally from the side surface of the IC package body, and a bent piece bent from the shoulder piece along the side surface of the IC package body.
In a connector that is provided with a C lead, the IC package is loaded into the connector body from the tip side of the bent portion, and is brought into contact with a large number of contacts provided on the connector body, the IC lead contact contact is disposed so as to be elastically displaceable in the direction toward and away from the outer surface of the IC lead, and is extended to the contact at a position outside the bent portion of the IC lead in a direction opposite to the bent portion. an elastic contact piece is provided, the free end of the elastic contact piece is elastically engaged with the outer surface of the shoulder piece;
An IC connector characterized in that it has an engaging part that prevents the package from coming off in a direction opposite to the loading direction, and the engaging part is used to make electrical contact with an IC lead.