JP2005222784A - Ic socket - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow alignment walls for adjacent contacts to escape by forming recessed cut-out parts on seating surfaces to a socket body of the contacts to facilitate the alignment of minute-pitch contacts. <P>SOLUTION: This IC socket is provided with: the socket body; the alignment walls formed on the socket body; alignment slits formed on the alignment walls; and a plurality of the contacts inserted into the slits and mounted on the socket body. The IC socket is characterized by that the plurality of alignment walls are arranged; and each contact has a cut-out part engaging with at least one of the alignment walls. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an IC socket in which a semiconductor device such as an IC package is used, and more particularly, to an IC socket having a contact that contacts and supports an IC lead of the IC package.

  2. Description of the Related Art Conventionally, as an IC package or the like as an electrical component, an IC socket of a type that is mounted on a socket main body of an IC socket and is in contact with and supported by an IC lead of the IC package by a contact is known.

Japanese Utility Model Publication No. 2-128392 JP-A-5-166570

  In recent years, with the fine pitch of the external terminals of the IC package, the fine pitch has also been advanced in the contact of the IC socket.

  However, in the conventional IC socket, since the contact is planted in a slot provided in the socket body through the partition wall, the contact alignment pitch is effectively arranged below the sum of the contact thickness and the alignment wall thickness. The present inventor has confirmed that it cannot be performed.

  Therefore, the present inventor studied to cope with the miniaturization of the contact alignment pitch, and devised the contact thickness and the alignment wall thickness to be reduced, and the formation of an insulating layer on the side surface of the contact.

  By the way, if the thickness of the contact or the alignment wall is reduced, the thickness of the contact or the alignment wall is reduced, which may cause a problem in strength. In addition, since a high-level part processing technique is required and the manufacturing becomes difficult, the manufacturing cost becomes expensive.

  Similarly, when an insulating layer is formed on the side surface of the contact, a high-level component processing technique is required, which makes it difficult to manufacture. In addition, when a high-level component processing technique is performed, the manufacturing cost is expensive.

  Accordingly, an object of the present invention is to provide an IC socket corresponding to a fine pitch which is easy to manufacture in consideration of the strength of contacts and alignment walls in order to solve such problems in the prior art. .

  In order to achieve the above object, an IC socket of the present invention is inserted into a socket body, an alignment wall disposed in the socket body, an alignment slit disposed in the alignment wall, and the alignment slit. An IC socket including a plurality of contacts attached to the socket body, wherein a plurality of the alignment walls are arranged, and the contacts have notches that engage with at least one of the alignment walls.

  The IC socket of the present invention is provided with a concave notch on the seating surface of the contact with the socket body so as to allow the alignment wall of the adjacent contacts to escape, thereby facilitating the alignment of the fine pitch contacts. Become.

  In the IC socket of the present invention, concave notches are provided on the seating surface of the contact with the socket body so that the contacts are arranged at a fine pitch.

  Other objects, features and advantages of the present invention will become apparent from the following detailed description of the embodiments of the present invention illustrated in the accompanying drawings.

  FIGS. 1 to 8 are diagrams showing a first embodiment of the IC socket of the present invention, FIG. 1 is a plan view showing the IC socket of the present invention, and FIG. 2 is a first view of the IC socket of the present invention of FIG. FIG. 3 is a central longitudinal sectional view along the second contact of the IC socket of the present invention of FIG. 1, and FIG. 4 is a sectional view of the IC socket of the present invention of FIG. FIG. 5 is a front view showing the first contact, FIG. 6 is a front view showing the second contact, and FIG. 7 is the first contact in the IC socket of the present invention. 8 is a perspective view when one of the second contacts is attached, and FIG. 8 is a perspective view when one of the second contacts is subsequently attached.

  As shown in FIGS. 1 to 3, the IC socket 1 of the present invention has a basic configuration including a socket body 2 and a plurality of contacts 3 disposed on the socket body 2. The socket body 2 is made, for example, from a suitable electrically insulating synthetic resin material into a substantially rectangular flat plate shape. Two substantially rectangular recesses 4 are provided on the left and right sides of the surface of the flat socket body 2. In these recesses 4, a plurality of contacts 3 are aligned and arranged substantially in parallel. The contacts 3 are configured by alternately arranging the first contacts 5 and the second contacts 6.

  In the socket main body 2, a plurality of first alignment slits 9 are provided at predetermined intervals as walls on both sides of each recess 4 serving as first alignment walls 7 for the first contacts 5. Inside the first alignment wall 7, a second alignment wall 8 for the second contact 6 is provided as a stepped portion. The second alignment wall 8 is provided with a plurality of second alignment slits 10 at a predetermined interval. Further, the first alignment slit 9 and the second alignment slit 10 are arranged in a state where the positions are shifted from each other by a half pitch. Accordingly, the first alignment slit 9 and the second alignment slit 10 are disposed adjacent to each other with a fine pitch. Further, the bottom 11 of the socket body 2 is press-fitted for press-fitting legs 16 and 23 of the first contact 5 and the second contact 6 corresponding to the first alignment slit 9 and the second alignment slit 10. The holes 12 are provided in a state shifted from each other. Press-fit legs 16 and 23 of the first contact 5 and the second contact 6 are inserted into the press-fit hole 12 so that the first contact 5 and the second contact 6 are attached to the socket body 2.

  The reason why the press-fit holes 12 into which the press-fit legs 16 and 23 of the first contact 5 and the second contact 6 are inserted is shifted to the bottom 11 of the socket body 2 is that the press-fit holes adjacent to each other are arranged. This is because the space between 12 is obtained with a sufficient size, and thereby the strength of the bottom 11 of the socket body 2 is sufficiently obtained.

  As clearly shown in FIG. 5, the first contact 5 includes a fixing portion 14 that is a strip-like main body portion extending in the lateral direction, and extends upward from the fixing portion 14 and extends in the lateral direction at the tip. It has an elastically deformable support arm portion 15 having a terminal contact portion 17 projecting upward, and a press-fit leg portion 16 inserted into the press-fit hole 12 of the socket body 2. Recessed notches 18 and 19 are provided, respectively. The fixing portion 14 is formed by pressing such as punching from a thin metal plate. Therefore, the first contact 5 has the front end portion and the rear end portion of the fixing portion 14 inserted into the first alignment slit 9 of the first alignment wall 7, and the concave notches 18 and 19 following them are first. 2 It is engaged and attached so as to cover the alignment wall 8. Of course, at the time of attachment, the press-fit leg portion 16 of the first contact 5 is simultaneously inserted and attached to the press-fit hole 12 of the socket body 2.

  Further, as clearly shown in FIG. 6, the second contact 6 includes a fixing portion 21 that is a strip-like main body portion extending in the horizontal direction, and extends upward from the fixing portion 12 and extends in the horizontal direction. An elastically deformable support arm portion 22 having a terminal contact portion 24 protruding upward at the tip, and a press-fit leg portion 23 inserted into the press-fit hole 12 of the socket body 2 are provided. The fixing portion 21 is created by pressing such as punching from a thin metal plate. Note that the length of the fixing portion 21 is shorter than the length of the fixing portion 14 of the first contact 5 so that the second contact 6 is disposed between the first alignment walls 7. Therefore, the second contact 6 is attached by inserting the front end portion and the rear end portion of the fixing portion 21 into the second alignment slit 10 of the second alignment wall 8. Of course, at the time of attachment, similarly, the press-fit leg portion 23 of the second contact 6 is simultaneously inserted and attached to the press-fit hole 12 of the socket body 2.

  FIG. 7 and FIG. 8 show the state when the first contact 5 and the second contact 6 of the contact 3 of the IC socket 1 of the present invention are attached. FIG. 7 is a perspective view when the first contact 5 is attached. FIG. 8 is a perspective view when the second contact 6 is attached subsequently to this.

  As shown in FIG. 7, in order to attach the first contact 5 of the contact 3, the front end portion and the rear end portion of the fixing portion 14 of the first contact 5 are arranged on both sides of the recess portion 4 of the socket body 2. This is done by being inserted into the first alignment slits 9 of the one alignment wall 7 respectively. At the same time, the press-fit leg portion 16 of the first contact 5 is inserted and inserted into the press-fit hole 12. In this case, the concave notches 18 and 19 before and after the fixing portion 14 of the first contact 5 are arranged so as to be engaged with the second alignment wall 8 as a stepped portion. This state is the state shown in FIG.

Subsequently, in addition to the first contact 5, the second contact 6 is attached in alignment with the first contact 5 as shown in FIG. 8.
In this case, as shown in the drawing, the front end portion and the rear end portion of the fixing portion 21 of the second contact 6 are arranged in the second alignment wall 7 formed in the recess portion 4 in the socket body 2. Each is inserted into the slit 10. At the same time, the press-fit leg portion 23 of the second contact 6 is inserted and attached to the press-fit hole 12 at the bottom of the socket body 2. This state is the state shown in FIG. 8, and the second contact 6 is attached in alignment with the first contact 5.

  According to the above-described IC socket 1, the distance between the first alignment slits 9 of the first alignment wall 7 is sufficiently maintained, and the first alignment slits 9 are not aligned with each other while being displaced from the first alignment slits 9. Nearly in the middle, the second alignment slit 10 is provided in the second alignment wall 8, which is a stepped portion, at a required interval. Accordingly, since the first alignment slit 9 and the second alignment slit 10 are provided in the first alignment wall 7 and the second alignment wall 8, respectively, the first alignment slit 9 and the second alignment slit 10 are required. It can arrange | position with the fine pitch of. For this purpose, the first contact 5 and the second contact 6 can be arranged with a required fine pitch. In addition, the first alignment wall 7 and the second alignment wall 8 can be arranged with the first alignment slit 9 and the second alignment slit 10 with sufficient strength, respectively.

  FIGS. 9 to 13 are views showing a second embodiment of the IC socket of the present invention, FIG. 9 is a perspective view of the second embodiment of the IC socket of the present invention, and FIG. 10 is a second view of the second embodiment of FIG. FIG. 11 is a front view of the first contact, FIG. 12 is a front view of the second contact, and FIG. 13 is a front view of the third contact.

  As shown in FIG. 9, the IC socket 50 according to the second embodiment of the present invention further includes a third contact in addition to the first and second contacts according to the first embodiment. In the second embodiment, the IC socket 50 basically includes a substantially rectangular socket body 52 and a plurality of contacts 53 disposed on the socket body 52. As in the first embodiment, the socket main body 52 is formed in a substantially rectangular flat plate shape from, for example, an appropriate electrically insulating synthetic resin material. Furthermore, substantially rectangular recesses 54 are provided on the left and right sides of the surface of the flat socket body 52, and a plurality of contacts 53 are aligned and arranged substantially in parallel in these recesses 54. It is installed. The contacts 53 can be configured by arranging the first contact 55, the second contact 56, and the third contact 57 in alignment.

  In the IC socket 50 according to the second embodiment, the socket body 52 includes a plurality of third alignment slits 63 on the third alignment wall 60 for the third contact 57 on the outermost walls on both sides of the recess portion 54. Provided at intervals. A first alignment wall 58 for the first contact 55 is provided inside the third alignment wall 60 as a stepped portion that is one step lower. A plurality of first alignment slits 62 are provided in the first alignment wall 58 at a predetermined interval. Further, a second alignment wall 59 is provided inside the first alignment wall 58. The second alignment wall 59 is provided with a plurality of second alignment slits 62 at a predetermined interval.

  Accordingly, the first alignment wall 58, the second alignment wall 59, and the third alignment wall 60 are provided, and the third alignment wall 60 is provided on the outermost side, and the first alignment wall 58 and the second alignment wall 59 are provided on the inner side. Are formed in order, and the third alignment slit 63, the first alignment slit 61, and the second alignment slit 62 are arranged in order in a predetermined fine pitch.

  Further, the third alignment slit 63, the first alignment slit 61, and the second alignment slit 62 are arranged in a state where the positions are shifted from each other by about 1/3 pitch. As a result, the third alignment slit 63, the first alignment slit 61, and the second alignment slit 62 are arranged adjacent to each other with a constant fine pitch as required. Further, corresponding to the third alignment slit 63, the first alignment slit 61, and the second alignment slit 62, the third contact 57, the first contact 55, and the second contact 56 are formed on the bottom 64 of the socket body 52. The press-fit holes 65 for the press-fit legs are provided so as to be shifted from each other. The press-fitting holes 65, 80, and 84 of the third contact 57, the first contact 55, and the second contact 56 are inserted into the press-fitting holes 65 in an aligned manner, and the third contact 57, the first contact 55, and the first contact 55 are inserted. Two contacts 56 are attached to the socket body 52 in alignment.

  The reason why the press-fit holes 65 into which the press-fit legs 68, 80, 84 of the first contact 55, the second contact 56, and the third contact 57 are inserted is shifted from the bottom 64 of the socket body 52. As in the first embodiment, the interval between the press-fitting holes 65 adjacent to each other can be sufficiently obtained, and thereby the strength of the bottom portion 64 of the socket body 52 can be sufficiently obtained.

  As shown in FIGS. 10 and 11, the first contact 55 is made in the same manner as in the first embodiment by stamping such as punching from a metal thin plate, and is a fixed portion that becomes a strip-like main body portion in the lateral direction. 66, an elastically deformable support arm portion 67 having a terminal contact portion 69 that extends upward from the fixing portion 66 and extends laterally and protrudes upward at the tip, and a press-fitting hole 65 of the socket body 52. It has a press-fit leg portion 68 to be inserted, and concave and long, slightly large cutout portions 70 and 71 are provided in front and rear of the fixing portion 66, respectively.

  Accordingly, the first contact 55 has the front end portion and the rear end portion of the fixing portion 66 inserted into the first alignment slit 61 of the first alignment wall 58, and the concave cutout portions 70, 71 following them are the first contacts 55. 2 It is engaged and attached so as to cover the alignment wall 59. Of course, at the time of attachment, the press-fit leg portion 68 of the first contact 55 is simultaneously inserted and attached to the press-fit hole 65 of the socket body 52.

  Further, as shown in FIGS. 10 and 12, the second contact 56 is made by stamping such as punching from a thin metal plate in the same manner as in the first embodiment, and has a strip-like body elongated in the lateral direction. A fixing part 78 as a part, an elastically deformable support arm part 79 having a terminal contact part 81 extending from the fixing part 78 and extending in the lateral direction and protruding upward at the tip, and the socket body 52 The press-fit leg portion 80 is inserted into the press-fit hole 65.

  The second contact 56 is formed so that the length of the fixing portion 78 is shorter than the length of the fixing portion 66 of the first contact 55 so as to be disposed between the first alignment walls 58. Therefore, the second contact 56 is attached by inserting the front end portion and the rear end portion of the fixing portion 78 into the second alignment slit 62 of the second alignment wall 59. Of course, at the time of attachment, similarly, the press-fit leg portion 80 of the second contact 56 is simultaneously inserted and attached to the press-fit hole 65 of the socket body 52.

  Further, as shown in FIGS. 10 and 12, the third contact 57 is made in the same manner as the first contact 55 and the second contact 56 by stamping such as punching from a thin metal plate, and is elongated in the lateral direction. A fixed portion 82 that is a main body portion, and an elastically deformable support arm portion 83 that has a terminal contact portion 85 that extends upward from the fixed portion 82 and extends laterally and protrudes upward at the tip, A press-fit leg portion 84 is inserted into the press-fit hole 65 of the socket main body 52, and concave long and narrow notches 86 and 87 are provided on the front and rear sides of the fixing portion 82, respectively.

  Accordingly, the third contact 57 has the front end portion and the rear end portion of the fixing portion 82 inserted into the third alignment slit 63 of the third alignment wall 60, and the concave notches 86 and 87 that follow the first alignment slit 63. The alignment wall 58 and the second alignment wall 59 are engaged and attached so as to cover them. Of course, at the time of attachment, the press-fit leg portion 84 of the third contact 57 is simultaneously inserted and attached to the press-fit hole 65 of the socket body 52.

  In this way, the second contact 56 is mounted in alignment with the first contact 55 in the same manner as in the first embodiment, and the first contact 55 is arranged on the opposite side of the first contact 55 from the first contact 56. A third contact 57 is attached in alignment with the contact 55.

  As shown in FIG. 9, in addition to the first contact 55 and the second contact 56, the third contact 57 is formed on the third alignment wall 60 formed on the outside of the first alignment wall 58 and at a higher level. In this structure, the fixing portion 82 of the third contact 57 is inserted and attached to the third alignment slit 63.

  That is, the third contact 57 is attached by inserting the front end portion and the rear end portion of the fixing portion 82 into the third alignment slit 63 of the outermost third alignment wall 60 on both sides of the recess portion 54 of the socket body 52. . In this case, the front notch portion 86 and the rear notch portion 87 of the fixing portion 82 of the third contact 57 connect the first alignment wall 58 and the second alignment wall 59 inside the third alignment wall 60. It is engaged and attached so as to cover. That is, the first alignment wall 58 and the second alignment wall 59 are fitted together in the elongated notches 86 and 87 of the fixing portion 82 of the third contact 57. Accordingly, the third contact 57 is attached by inserting the front end portion and the rear end portion thereof into the third alignment slit 63 of the outermost third alignment wall 60 of the socket body 52.

  According to the IC socket 50 of the present invention configured as described above, the distance between the first alignment slits 61 of the first alignment wall 58 is sufficiently maintained, and in a state of being shifted from the first alignment slit 61, A second alignment slit 62 is provided at approximately 1/3 between the first alignment slits 61, and a third alignment slit 63 is provided on the third alignment wall 60 at a predetermined interval so that the third alignment slits are arranged. Since the third alignment slit 63 of the wall 60 is disposed in a state shifted from the first alignment slit 61 and the second alignment slit 62, the first, second, and third contacts 55, 56, and 57 They can be arranged at a fine pitch.

  Therefore, in this way, the first alignment wall 58, the second alignment wall 59, and the third alignment wall 60 are provided with the first alignment slit 61, the second alignment slit 62, and the third alignment slit 63, respectively. The first alignment slit 61, the second alignment slit 62, and the third alignment slit 63 can be arranged with a fine pitch of 1/3 interval. As a result, the first contact 55, the second contact 56, and the third contact 57 can be aligned and arranged with a required fine pitch. Further, the first alignment wall 58, the second alignment wall 59, and the third alignment wall 60 can be disposed with sufficient strength, respectively, with the first alignment slit 61, the second alignment slit 62, and the third alignment slit 63. .

  In the IC socket of the present invention, the IC package used is an IC package such as a dual flat package or a small outline package. However, the IC package is not limited to such an IC package. Of course, other similar types of IC packages such as flat packages can be used.

  The IC socket of the present invention can be favorably applied to an IC socket that requires a fine pitch arrangement of contacts.

It is a top view which shows IC socket of this invention. It is a center longitudinal cross-sectional view along the 1st contact of the IC socket of this invention of FIG. It is a center longitudinal cross-sectional view along the 2nd contact of the IC socket of this invention of FIG. FIG. 2 is an enlarged partial plan view of a contact portion of the IC socket of the present invention of FIG. 1. It is a front view which shows a 1st contact. It is a front view which shows a 2nd contact. It is a perspective view when attaching one of the first contacts in the IC socket of the present invention. FIG. 8 is a perspective view when one of the second contacts is attached following FIG. 7. It is a perspective view in Example 2 of the IC socket of this invention. FIG. 10 is a perspective view illustrating an arrangement state of first to third contacts in Example 2 of FIG. 9. It is a front view of the 1st contact. It is a front view of the 2nd contact. It is a front view of the 3rd contact.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,50 IC socket 2,52 Socket main body 3,53 Contact 4,54 Indentation part 5,55 1st contact 6,56 2nd contact 7,58 1st alignment wall 8,59 2nd alignment wall 9,61 1st Alignment slit 10, 62 Second alignment slit
11, 64 Bottom portion 12, 65 Press-fit hole 14, 21, 66, 78, 82 Fixing portion 15, 22, 67, 79.83 Support arm portion 16, 23, 68, 80, 84 Press-fit leg portion 17, 24, 69, 81, 85 Terminal contact portion 18, 19, 70, 71, 86, 87 Notch portion 57 Third contact 60 Third alignment wall 63 Third alignment slit

Claims (2)

The socket body,
An alignment wall disposed in the socket body;
An alignment slit disposed in the alignment wall;
In an IC socket comprising a plurality of contacts inserted into the alignment slit and attached to the socket body,
A plurality of the alignment walls are arranged,
The IC socket according to claim 1, wherein the contact has a notch that engages with at least one of the alignment walls. The IC socket according to claim 1, wherein the notch portion of the contact is provided in a fixed portion.

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