KR960001566Y1 - Chip carrier socket assembly - Google Patents

Abstract

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Description

Chip carrier socket assembly

1 is a perspective view showing a chip carrier socket assembly of the present invention mountable on a printed circuit board.

2 is a cross-sectional view of an exploded view of the housing and cover of the chip carrier socket assembly.

3 is a partial longitudinal cross-sectional view taken along line 3-3 of FIG.

4 shows the lid latched to the housing in relation to the third diagram;

* Explanation of symbols for main parts of the drawings

10 housing 12 cover

14 printed circuit board 16: central platform area

20: terminal 22: partition

24: tail part 26: hole

28,30: latch arm 30a: free leg

32, 34: hook portion 40: joint means

42: access area or access means 44: donation

46: elastic contact 48: locking post

50: Bore 52, 54: Bob

56 terminal receiving recess 60 chip carrier

62: lead

The present invention relates to a chip carrier socket assembly, and more particularly to an improved latch means on the assembly.

Integrated circuit chips are mounted in chip carriers made of dielectric material, from which the conductors of the integrated circuit extend. The needle carrier socket assembly is usually provided with an insulating housing and an insulating cover. The housing includes a receptacle that houses the chip carrier, and the lid is disposed around the chip carrier once the needle carrier is placed in the receptacle. The housing mounts a plurality of terminals adjacent to the receptacle for contacting conductors or leads extending from the chip carrier. The housing may have a form for mounting on a printed circuit board, in which the terminals are coupled with circuit traces on the printed circuit board, or otherwise configured to interconnect the terminals to a complementary electrical component. Can be Examples of such chip carrier sockets are described in US Pat. Nos. 4,872,845 (10 October 1989, korsunsky et al.), 4,886,470 (12 December 1989, Billman et al.), And 4,968,259. November 6, 1990, Korsunsky et al.

In the above-described chip carrier socket assembly, some form of latch engagement means is typically provided between the housing and the cover to hold the cover on the housing, between which the chip carrier is fixed in the receptacle of the housing, and the housing terminals are chip carrier Combined with conductors extending from For example, as described in one or more of the above-mentioned US patents, the terminals on the housing may include a resilient latch arm for interlocking with the cover, or the housing itself may be resilient by interlocking with the cover. It may include a latch arm. Due to the high density, miniaturization characteristics of integrated circuit chips, and miniaturization of chip carrier and socket components, it is difficult to achieve sufficient elasticity in the design of latch arms. In addition, the latch means are often exposed to the outside of the socket housing and can be unintentionally easily released by contact with an external object.

The present invention is directed to solving these problems by providing a latching means in the chip carrier socket assembly that is improved elasticity and is entirely concealed within the socket assembly and is also easily removable to open the assembly.

It is therefore an object of the present invention to provide a novel and improved chip carrier socket assembly for an integrated circuit chip in which the leads extend.

In an exemplary embodiment of the present invention, the socket assembly includes an insulating housing and a lid defining a chip carrier receptacle means for receiving a chip carrier. When the chip carrier is disposed in the receptacle means, a plurality of terminals are mounted on the housing adjacent the receptacle means for contacting the leads of the chip carrier. The lid is deployable around the chip carrier when the chip carrier is disposed in the receptacle means. At least a pair of resilient complementary mutually engaging latch arms are provided for securing the cover to a housing around an already placed chip carrier, with one latch arm provided on the housing and the other latch arm provided on the cover. These dual latch arms provide increased elasticity to the latch engagement means of the socket assembly.

As disclosed herein, the housing and the lid are each integrally molded from a dielectric material, and the latch arms are also integrally molded with the housing and the lid, respectively. The latch arms have mutually engaging hook portions thereon. In the disclosed embodiment of the present invention, the latch arm on the housing is provided in the form of a post member having a hook portion on the distal end, and the latch arm on the cover is a generally inverted U-shape defining a free leg to the hook portion on the distal end. It is provided in the form of a member.

The shape of the housing and cover is rectangular, defining four respective sides. In the disclosed embodiment of the present invention, four pairs of interlocking latch arms are provided in the middle of the ends of the four respective sides of the housing and cover.

Another feature of the present invention is to design the housing and cover of the socket assembly such that the latch engagement means is disposed inside the housing and cover to prevent accidental unlocking. The housing and the cover are coupled to define a cavity means therebetween, in which an image of the latch arms is disposed inside the socket assembly. An access means provided in one of the housing and the cover communicates with the common means, through which the latch arms can be unlocked from the outside of the housing and the cover fixed together.

Other objects, features and advantages of the present invention will become apparent from the following detailed description made with reference to the accompanying drawings.

Features of the present invention believed to be novel are particularly described in the claims. The invention and its objects and advantages can be best understood by referring to the following description made with reference to the accompanying drawings, wherein like reference numerals designate like elements.

First, referring to FIG. 1, the present invention relates to a chip carrier socket assembly for an integrated circuit chip in which leads extend, as described below. The chip carrier socket assembly of the present invention includes a housing 10 and a cover l2. Both the lid and the housing are substantially insulated and integrally molded from a dielectric material such as plastic. The chip carrier socket assembly illustrated herein is designed to be mounted to a printed circuit board l4 having circuit traces (not shown). However, a chip carry socket assembly employing the novel features of the present invention can be used for interconnection with other electrical or electronic components.

As shown in FIG. 1, the housing 10 and the lid 12 are rectangular (square in the illustrated embodiment) defining four respective sides of each part. At least one of the housings or lids, or the combined two, defines a receptacle means for receiving the chip carriers. In the illustrated embodiment, the housing 10 comprises a central platform area 16 on which the chip carrier can be placed, and the lid 12 is centered around the chip carrier, as will be explained in more detail later. An open area 18. The chip carrier has leads extending from the integrated circuit chip inside the chip carrier to engage terminals 20 mounted on the housing 10 between the partition walls 22 of the integrally molded housing. It should be noted that only some of the terminals and partitions in the periphery of the receptacle means are shown in FIG. 1 in order to avoid overly cluttering the figure. Each terminal 20 passes through a suitable hole 26 in the printed circuit engine 14 to interconnect circuit traces on the substrate or plated-through holes in the substrate, such as by soldering or the like. It has a tail portion 24 for insertion.

In general, the present invention is directed to an improved latch engagement means between the housing 10 and the cover 12. As shown in FIG. 1, the latch engagement means are provided as pairs of resilient complementary mutually engaging latch arms, with each latch arm 28 of each pair molded integrally with the housing 10 to be removed from the housing 10. Protruding upwards, each pair of other latch arms 30 is integrally molded with the lid 12 for mutual engagement with each pair of latch arms 28 on the housing and protrudes downward from the lid 12. Since the housing and cover are rectangular, a pair of interlocking latch arms 28, 30 are disposed in the middle of each of the four sides of the housing and cover.

In particular, with reference to FIGS. 2 and 3 in relation to the first diagram, each latch arm 28 on the housing 10 is provided in the form of a post member having a hook portion 32 on its end. Each latch arm 30 on the lid 12 is provided in the form of a generally inverted U-shaped member that defines a pair of free legs 30a having a hook portion 34 on the distal end.

4 shows the housing 10 and the lid 12 secured in the assembly, respectively, by latch arms 28 and 30 on the housing and lid, with only one pair of pairs of mutually engaging latch arms shown. For example, the cover 12 is assembled to the housing I0 in the direction of arrow “A”, and the hook portion 34 on the distal end of the free leg 30a of the latch arm 30 is attached to the housing 10. It is caught by the hook part 32 lower part of the latch arm 28. As shown in FIG. Since the two latch arms are integrally molded from a dielectric material (eg, plastic) such as a housing and a cover, the elasticity is increased by mutually coupling the pairs of latch arms. Another feature of the present invention is the design of the latch means between the housing 10 and the cover 12, whereby the latch means is disposed inside the assembly when the housing and cover are latched together. This prevents the locked state of the assembly from being accidentally released due to the possibility of contact of the latch arms by an external object.

In particular, as shown in FIG. 4, when the housing and the cover are fixed together, the latch arm 28 and the free leg 30a of the latch arm 30, in particular, the hook portions 32 and 34, on the housing 110. They are each located in an internal cavity means 40 defined between the assembled parts. In the cover 12 adjacent the free leg 30a the access area 42 is defined in communication with the common means 40, and a suitable tool is inserted into the access area 42 to move the free leg 30a to the arrow "B." By tilting in the "direction, the latch arms can be unlocked from the outside of the housing and cover secured together. When the cover 12 is moved in the direction opposite to the assembly direction indicated by the arrow "A", the hook portions 34 on the distal ends of the free legs release the hook portion 32 of the latch arm 28 on the housing 10. Can be moved to a location.

Finally, the configuration of the terminals of the terminals 20 between the partition walls 22 of the housing 10 is shown in FIG. 4. Each terminal is a base 44, a resilient contact 46. Locking post 48 and tail 24 (described above). The locking fest 48 is press fit into the bore 50 of the housing 10, with the barbs 54 on the elastic part of the terminal and the barbs 52 on the locking post into the plastic material of the housing. The terminal is firmly seated in the terminal-receiving recess 56 in the housing. In general and as can be inferred from the prior art, such as the patents referenced above, the chip carrier 60 is external from the integrated circuit therein to engage with the resilient contacts 46 of the terminals 20. It has extending leads 62. One such increase of leads 62 is shown in FIG. 4 in engagement with the illustrated terminal. The chip carrier rests in the open area 18 of the lid 12 and the top of the platform area 16 of the housing 10.

It should be understood that the present invention may not be embodied in other specific forms without departing from the spirit and central characteristics of the present invention. Therefore, the present examples and embodiments are to be considered in all respects as illustrative and not restrictive, and the present invention is not limited to the details made herein.

Claims (7)

A chip carrier socket assembly for an integrated circuit chip in which leads extend, comprising: an insulating housing (10), An insulating cover 12 for placing around the chip carrier, Receptacle means (16, 18) defined by at least one of said lid and said housing for receiving said chip carrier; A plurality of terminals 20 on the housing adjacent the receptacle means for contact with the leads 62 of the chip carrier when the chip carrier is disposed in the receptacle means; At least one pair of resilient complementary mutually engaging latch arms 28 comprising one latch arm 28 on the housing and another latch arm 30 on the cover to secure the cover to the housing around the disposed chip carrier. 30) and a cavitation means (40) between the housing and the cover in which a pair of latch arms are disposed inside the housing and the cover fixed together. 2. The chip carrier socket assembly of claim 1 wherein the housing and the cover are each integrally molded from a dielectric material and the latch arms are integrally molded together with the housing and the cover, respectively. 2. The chip carrier sock assembly of claim 1, wherein the latch arms comprise a sabot mutual coupling hook portion (34). 2. The chip carrier socket assembly of claim 1 comprising a plurality of pairs of said latch arms spaced circumferentially about said housing and said cover. 5. The chip carrier socket assembly of claim 4, wherein the housing and cover are shaped into a complementary rectangular shape defining four respective sides, and including four pairs of the latch arms in the middle of each of these sides. . 2. The locked state of the latch arms according to claim 1, comprising access means 42 provided in one of said housing and cover in communication with said common means, through said access means from outside of said housing and cover secured together. Chip carrier socket assembly, characterized in that can be released. 2. The latch arm on the housing comprises a post member having a hook portion 32 on the distal end, wherein the latch arm on the cover is on the distal end for mutual engagement with the hook portion 32 on the post member. And an inverted U-shaped member defining a free leg (30a) having a hook portion (34) at the end thereof.