CN216794153U - Socket with improved structure - Google Patents
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- CN216794153U CN216794153U CN202121717104.6U CN202121717104U CN216794153U CN 216794153 U CN216794153 U CN 216794153U CN 202121717104 U CN202121717104 U CN 202121717104U CN 216794153 U CN216794153 U CN 216794153U
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Abstract
The utility model provides a socket capable of preventing crosstalk. A socket (1) is provided with: a case (10) having a box shape with an opening (100) and a matrix of through holes (17) provided in a bottom (13); and a plurality of contacts (7) including a ground contact (7(G)) and signal contacts (7(P)) and (7(N)), wherein the contacts (7(G)) and the contacts (7(P)) and (7(N)) are alternately arranged in a plurality in the Z direction, and the through-holes (17) short-circuit adjacent contacts (7(G)) in the Z direction.
Description
Technical Field
The present invention relates to a high-speed transmission socket mounted on a circuit board.
Background
In the lga (land grid array) package, there is a case where the lga package is not directly mounted on a circuit board, but is mounted on the circuit board via a dedicated socket. Patent document 1 discloses a technique related to such an LGA package socket. In the socket for electronic components disclosed in patent document 1, a metal plate having a plurality of through holes is used as a bottom portion of a housing, and signal contacts and ground contacts arranged in a grid pattern are inserted through the through holes of the metal plate to fix the contacts to the housing.
Documents of the prior art
Patent literature
[ patent document 1 ] Japanese patent laid-open No. 2012 and 174616
SUMMERY OF THE UTILITY MODEL
Problem to be solved by utility model
However, in the socket of patent document 1, the signal contact and the ground contact have the same shape. Therefore, there is a problem that the resonance frequency of multiple reflections caused by the mismatch of the contact impedance is uniform between the signal and the ground, and the crosstalk (radiation of the signal to the surroundings due to the resonance) becomes large.
The present invention has been made in view of the above problems, and an object thereof is to provide a jack capable of preventing crosstalk from occurring.
In order to solve the above problem, a socket according to a preferred embodiment of the present invention includes: a housing having an open box shape and a matrix with through holes at the bottom; and a plurality of contacts including a ground contact and a signal contact, wherein one or more of the ground contacts and the signal contacts are alternately arranged in parallel in a predetermined arrangement direction, and the through holes short-circuit the adjacent ground contacts in the arrangement direction.
In this aspect, a connecting portion that connects the plurality of adjacent ground contacts may be provided in the arrangement direction.
In this aspect, the contact may include: a contact portion which contacts a substrate of a communication object; a spring portion extending from an end of the contact portion; an insertion portion bent and extended from an end of the spring portion and inserted into the through hole; and a solder portion soldered to a mounting-destination substrate at an end of the insertion portion, wherein a width of the ground contact in the arrangement direction of the contact portions is wider than a width of the signal contact in the arrangement direction of the contact portions.
Further, the contact may have: a contact portion which contacts a substrate of a communication object; a spring portion extending from an end of the contact portion; an insertion portion bent and extended from an end of the spring portion and inserted into the through hole; and a solder portion soldered to a mounting-purpose substrate at an end portion of the insertion portion, wherein a width of the ground contact in the arrangement direction of the spring portions is narrower than a width of the signal contact in the arrangement direction of the spring portions.
Further, the contact may have: a contact portion which contacts a substrate of a communication object; a spring portion extending from an end of the contact portion; an insertion portion bent and extended from an end of the spring portion and inserted into the through hole; and a soldering portion connected to an end of the insertion portion and soldered to a mounting-purpose substrate, wherein a width of the insertion portion of the ground contact in the arrangement direction is narrower than a width of the insertion portion of the signal contact in the arrangement direction.
Further, the contact may have: a contact portion which contacts a substrate of a communication object; a spring portion extending from an end of the contact portion; an insertion portion bent and extended from an end of the spring portion and inserted into the through hole; and a solder portion soldered to a mounting-destination substrate at an end portion of the insertion portion, a width of the ground contact in the arrangement direction of the contact portions being wider than a width of the signal contact in the arrangement direction of the contact portions, the contact including: a contact portion which contacts a substrate of a communication object; a spring portion extending from an end of the contact portion; an insertion portion that is bent and extended from an end of the spring portion and is inserted into the through hole; and a solder portion soldered to a mounting-purpose substrate at an end portion of the insertion portion, a width of the ground contact in the arrangement direction of the spring portions being narrower than a width of the signal contact in the arrangement direction of the spring portions, the contact including: a contact portion which contacts a substrate of a communication object; a spring portion extending from an end of the contact portion; an insertion portion bent and extended from an end of the spring portion and inserted into the through hole; and a solder portion connected to an end of the insertion portion and soldered to a mounting-purpose substrate, wherein a width of the ground contact in the arrangement direction of the insertion portions is narrower than a width of the signal contact in the arrangement direction of the insertion portions.
The connecting portion may connect the insertion portions of the plurality of adjacent ground contacts in the arrangement direction.
The connection portion may be a contact bar extending in the arrangement direction, and the contact bar may be fixed to one surface of the plurality of adjacent ground contacts in the arrangement direction.
The contact strip may be in contact with one surface of the ground contact so as to avoid the signal contact and substantially cover the ground contact
The character is bent.
The contact may have a circular hole, the connection portion may have a metal contact bar and a plurality of protrusions protruding from one surface of the contact bar, and the plurality of protrusions of the connection portion may be fitted into the circular holes of the plurality of adjacent ground contacts in the arrangement direction.
In the signal contacts, two adjacent signal contacts may form one channel of high-speed differential transmission in pairs, each pair of the signal contacts may be arranged apart from each other in the arrangement direction and in an orthogonal direction orthogonal thereto, and the ground contact may be arranged at a position adjacent to each of the signal contacts in the arrangement direction and a position adjacent to each of the signal contacts in the orthogonal direction, and may surround the pair.
Further, the housing may include an insulating member extending in one direction, the contacts arranged in the arrangement direction may be inserted into the insulating member, and the insulating member may be disposed between the facing wall portions of the housing.
Effect of the utility model
The socket of the present invention includes: a housing having an open box shape and a matrix with through holes at the bottom; and a plurality of contacts including a ground contact and a signal contact, wherein one or more of the ground contacts and the signal contacts are alternately arranged in a predetermined arrangement direction, and the ground contacts adjacent to each other are short-circuited in the arrangement direction through the through-holes. Thus, a jack capable of preventing crosstalk can be provided.
Drawings
Fig. 1 is a perspective view of a socket 1 as a 1 st embodiment of the present invention.
Fig. 2 is a view of the socket 1 of fig. 1 as viewed from the + Y side.
Fig. 3 is a diagram showing the arrangement of the contacts 7 in fig. 2.
Fig. 4 is a view of the contacts 7 of the 1 st and 2 nd columns of fig. 2 viewed from the-X side.
Fig. 5 is a perspective view of the contact 7, the connection portion 2, and the pad 92 of the IC package 91 of the socket 1 of fig. 1 and 2.
Fig. 6 is a perspective view of the bottom 13 of the socket 1 of fig. 1 and 2, as viewed from the lower side.
Fig. 7 is a perspective view of the contact 7 and the contact strip 21 of the socket 1 according to embodiment 2 of the present invention.
Fig. 8 is a perspective view of the contact 7 and the contact strip 22 of the socket 1 according to embodiment 3 of the present invention.
Fig. 9 is a perspective view of the contact 7, the contact bar 23, and the protrusion 24 of the socket 1 according to embodiment 4 of the present invention.
Fig. 10 is a diagram showing the contact 7 and the insulating member 6 of the socket 1 according to embodiment 5 of the present invention.
Fig. 11 is a view of the socket 1 of fig. 10 with the insulating member 6 removed.
Fig. 12 is a perspective view of the contact 7 and the contact bar 21 of the socket 1 according to the modified example of the present invention.
Fig. 13 is a perspective view of the contact 7 and the contact bar 21 of the socket 1 according to the modified example of the present invention.
[ notation ] to show
1, a socket; 2, a connecting part; 6 an insulating member; 7, contact points; 10 a shell; 11 side wall parts; 13 bottom part; 17 through holes; 20 a support; 21, connecting strips; 22, connecting strips; 23, connecting strips; 24 a protrusion; 71 a contact portion; 72 a spring portion; 73 an insertion part; 74 a solder portion; 75 press-fitting part; 90 solder balls; 91 an IC package; 92 bonding pads; 93 a circuit board; 94 bonding pads; 79 circular holes; 100 openings are formed; 110 ribs; 202 a projection; 237 positioning pins; a convex part 605; 612 protrusions.
Detailed Description
< embodiment 1 >
The socket 1 according to embodiment 1 of the present invention will be described below with reference to the drawings. The socket 1 is mounted on a circuit board 93, and used by fitting an IC package 91 into an opening 100 on the opposite side of the mounting surface. The IC package 91 is an optical receiver. The IC package 91 performs high-speed Differential (Differential) transmission based on pam (pulse Amplitude modulation) 4.
In the following description, the fitting direction of the IC package 91 to the socket 1 is appropriately referred to as a Y direction, one direction orthogonal to the Y direction is appropriately referred to as an X direction, and a direction orthogonal to both the Y direction and the X direction is appropriately referred to as a Z direction. The side of the socket 1 in the Y direction on which the opening 100 opens is referred to as an upper side, and the opposite side is referred to as a lower side. In addition, the-X side is sometimes referred to as the front side, the + X side as the rear side, the-Z side as the left side, and the + Z side as the right side.
The socket 1 has a housing 10, a holder 20, and contacts 7. The housing 10 has a box shape with an opening 100. The housing 10 has a bottom 13 serving as a bottom of the opening 100, and 2 pairs of side walls 11 and 12 facing the X direction and the Z direction across the opening 100.
At the bottom 13, a matrix of 16 rows and 8 columns of through holes 17 is provided.
On each side surface of the two side wall portions 11 opposed to the X direction, 5 ribs 110 are provided. The cross-section of the rib 110 is a perfect circle. The 5 ribs 110 of the side wall part 11 on the ± X side are welded to the 5 support holes through the 5 support holes of the ± X side bracket 20.
Right lower portions of the five support holes of the lower end of the bracket 20 extend downward as protrusions 202. The protruding portion 202 of the + X-side bracket 20 is bent toward the + X side, which is the outer side, below the lower end of the housing 10. The protruding portion 202 of the X-side bracket 20 is bent toward the-X side, which is the outer side, below the lower end of the housing 10. The lower surfaces of these bent portions form mounting surfaces to be soldered to pads 94 of circuit board 93.
Two positioning pins 237 are provided on the side wall portion 11 on the-X side of the housing 10, and one positioning pin 237 is provided on the side wall portion 11 on the + X side. The positioning pins 237 are fitted in the positioning grooves of the IC package 91.
The contact 7 has: a contact portion 71 that contacts a pad 92 of an IC package 91 that is a communication target; a spring portion 72 extending obliquely downward from an end of the contact portion 71; an insertion portion 73 bent downward from an end portion "く" of the spring portion 72 and inserted into the through hole 17; and a solder portion 74 that is bent at a right angle to the front side at the lower end of the insertion portion 73 and soldered to the circuit board 93.
The contact portion 71 is bent like a push button. A circular hole 79 is provided above the insertion portion 73. Lower portions of both side surfaces of the insertion portion 73 are spread outward as press-fitting portions 75. The solder portion 74 has a disk shape. Solder ball 90 is fixed to the lower surface of solder portion 74.
The contacts 7 are arranged in 16 rows in a predetermined arrangement direction (hereinafter, simply referred to as an arrangement direction) parallel to the side wall portion 11. The contact 7 passes through the through hole 17 of the housing 10. The press-fitting portion 75 of the contact 7 is joined to the inner peripheral wall of the through hole 17. Spring portion 72 and contact portion 71 of contact 7 are located in upper opening 100 of bottom portion 13 of housing 10, and solder portion 74 and solder ball 90 of contact 7 are located on the lower side of bottom portion 13.
Here, the contact 7 includes a + signal contact for high-speed differential transmission, a-signal contact for high-speed differential transmission, and a ground contact for ground. In the following description, the + signal contact 7 of the high-speed differential transmission is assigned a character (P), the-signal contact 7 of the high-speed differential transmission is assigned a character (N), and the ground contact 7 is assigned a character (G) as appropriate for distinction.
The contacts 7 are arranged such that two adjacent contacts 7(P) and 7(N) form a pair to form one channel of high-speed differential transmission, and each pair of contacts 7(P) and 7(N) is arranged apart in the Z direction and in the X direction orthogonal thereto. The contacts 7(G) are disposed apart from each other at adjacent positions in the Z direction and the X direction of each pair of contacts 7(P) and 7 (N).
More specifically, as shown in fig. 3, in column 1, column 3, column 5, and column 7, row 1 to row 4 are contacts 7(G), row 5 is a contact 7(N), row 6 is a contact 7(P), row 7 to row 10 are contacts 7(G), row 11 is a contact 7(N), row 12 is a contact 7(P), and row 13 to row 16 are contacts 7 (G).
In columns 2, 4, 6, and 8, row 1 is contact 7(G), row 2 is contact 7(N), row 3 is contact 7(P), rows 4 to 7 are contact 7(G), row 8 is contact 7(N), row 9 is contact 7(P), rows 10 to 13 are contact 7(G), row 14 is contact 7(N), row 15 is contact 7(P), and row 16 is contact 7 (G).
Fig. 4 is a view of the contacts 7 in the 1 st and 2 nd rows viewed from the-X side, and fig. 5 is a perspective view of the contacts 7 of the socket 1, the coupling portion 2, and the lands 92 of the IC package 91. As shown in fig. 4 and 5, four contacts 7(G) arranged in parallel with the side wall portion 11 are short-circuited by the coupling portion 2. The coupling portion 2 couples the insertion portions 73 of the left and right contacts 7 (G). The coupling portion 2 is connected to the left and right contacts 7(G) in alignment. As shown in fig. 4, the width W1a in the arrangement direction of the contact portions 71 of the contact 7(G) is wider than the widths W2a in the arrangement direction of the contact portions 71 of the contacts 7(P) and 7 (N). The width W1b in the arrangement direction of the spring portions 72 of the contact 7(G) is narrower than the width W2b in the arrangement direction of the spring portions 72 of the contacts 7(P) and 7 (N). The width W1c in the arrangement direction of the insertion portions 73 of the contacts 7(G) is narrower than the width W2c in the arrangement direction of the insertion portions 73 of the contacts 7(P) and 7 (N). As shown in fig. 4, the width W1d in the arrangement direction of the press-fitting portions 75 of the contact 7(G) is narrower than the width W2d in the arrangement direction of the press-fitting portions 75 of the contacts 7(P) and 7 (N).
Four contacts 7(G) arranged in the arrangement direction are integrated by the coupling portion 2. The positions of the four contacts 7(G) in the odd-numbered columns and the positions of the four contacts 7(G) in the even-numbered columns are shifted every 3 in the arrangement direction. Therefore, the contacts 7(P) and 7(N) are located before the contact 7(G), and the contact portion 71 of the contact 7(G) is seen to protrude from the contact portions 71 of the contacts 7(P) and 7(N) when viewed from the front side. The spring portion 72, the insertion portion 73, and the press-in portion 75 of the contacts 7(P) and 7(N) protrude from the spring portion 72, the insertion portion 73, and the press-in portion 75 of the contact 7(G) when viewed from the front side, in a portion where the contact 7(G) exists before the contacts 7(P) and 7 (N).
The above is the details of the present embodiment. The socket 1 in the present embodiment includes: a case 10 having a box shape with an opening 100, and a matrix of through holes 17 provided in a bottom 13; and a plurality of contacts 7 including ground contacts 7(G) and signal contacts 7(P) and 7(N), wherein the ground contacts 7(G) and the signal contacts 7(P) and 7(N) are alternately arranged in parallel one by one in the arrangement direction (Z direction), and the through holes 17 short-circuit the adjacent contacts 7(G) in the arrangement direction. This can provide the outlet 1 capable of preventing crosstalk from occurring.
< embodiment 2 >
As shown in fig. 7, in the socket 1 of the present embodiment, the coupling portion 2 is formed by a metal joint 21. The joint 21 extends linearly in the arrangement direction. The bar 21 has a length corresponding to four contacts 4. In the socket 1 of the present embodiment, the contact bar 21 is fixed to the front surface of the insertion portion 73 of the adjacent four contacts 7 (G). The four contacts 7(G) are connected by a tab 21. According to this embodiment, the same effects as those of embodiment 1 can be obtained.
< embodiment 3 >
As shown in fig. 8, in the socket 1 of the present embodiment, the coupling portion 2 is formed by a metal contact 22. The tab 22 has a length corresponding to the contact 16. In the socket 1 of the present embodiment, the contact bar 22 is in contact with the front surface of the contact 7(G), and substantially avoids the contacts 7(P) and 7(N)
The character shape is bended. The contacts 7(G) are connected by a tab 22. According to the present embodiment, the same effects as those of the above embodiment 1 can be obtained.
< embodiment 4 >
As shown in fig. 9, in the socket 1 of the present embodiment, the coupling portion 2 is formed by a metal tab 23 and four protrusions 24 protruding from one surface of the tab 23. The projection 24 is formed of metal. The four protrusions 24 of the contact bar 23 are fitted into the circular holes 79 of the contacts 7, whereby the contact bar 23 is coupled to the adjacent four contacts 7 (G). The four contacts 7(G) are connected by a tab 23. In the present embodiment, the same effects as those of embodiment 1 can be obtained.
< embodiment 5 >
As shown in fig. 10 and 11, in the socket 1 of the present embodiment, 16 contacts 7 arranged in parallel in the arrangement direction are inserted into one insulating member 6, and the coupling portion 2 between the contacts 7(G) is covered with the insulating member 6. The insulating member 6 extends in one direction. The front surface of the insulating member 6 projects forward as a projection 605 at the front side of two of the four contacts 7(G) at both ends, and a bowl-shaped projection 612 is provided on the front surface of the projection 605.
The contact 7 and the insulating member 6 are integrated with each other, and the side end portions 601 of the insulating member 6 are fitted into the grooves of the left and right wall portions 12 of the housing 10, whereby the housing 10 is assembled. The protrusion 612 of each insulating member 6 abuts against the rear surface of each front insulating member 6. By arranging 8 insulating members 6 between the wall portions 12 of the housing 10, respectively, and bringing the rear surface of the front insulating member 6 into contact with the protruding portion 612 of the rear insulating member 6, the 8 insulating members 6 can be tightly fixed in the opening 100.
Although the following modifications have been described in relation to embodiments 1 to 5 of the present invention, the following modifications may be added to this embodiment.
(1) In the above-described embodiments 1 to 5, the through holes 17 and the contacts 7 of the socket 1 are 16 rows and 8 columns. However, the rows of through vias 17 and contacts 7 may be more or less than 16 rows. The number of the through holes 17 and the number of the contacts 7 may be more or less than 8.
(2) In the sockets 1 according to embodiments 2 to 4 described above, 16 contacts 7 may be inserted into one insulating member 6, as in embodiment 5. In this case, the contact 7, the metal strips 21, 22, and 23, and the insulating member 6 may be integrated, and the insulating member 6 may be fitted between the walls 12 of the housing 10. In addition, the contact 7, the metal bars 21, 22, and 23, and the insulating member 6 may be integrated, the four contacts 7(G) and the contacts 7(P) and 7(N) may be alternately arranged in pairs, the metal bars 21, 22, and 23 may be attached to the four contacts 7(G), and the contacts 7 may be inserted into one insulating member 6 in this state.
(3) In embodiment 2 described above, the contact strip 21 is fixed to the front surface of the insertion portion 73 of the adjacent four contacts 7. However, as shown in fig. 12, the contact strip 21 may be fixed to the spring portions 72 of the adjacent four contacts 7. As shown in fig. 13, the tab 21 may be fixed to the upper surfaces of the solder portions 74 of the adjacent four contacts 7.
Claims (12)
1. A socket is characterized by comprising:
a housing having an open box shape and a matrix with through holes at the bottom; and
a plurality of contacts including a ground contact and a signal contact, the ground contact and the signal contact being alternately arranged one by one in a predetermined arrangement direction and passing through the through-hole,
the adjacent ground contacts are short-circuited in the arrangement direction.
2. The receptacle of claim 1,
a connecting portion for connecting the plurality of adjacent ground contacts is provided in the arrangement direction.
3. The socket of claim 2,
the contact has: a contact portion which contacts a substrate to be communicated; a spring portion extending from an end of the contact portion; an insertion portion that is bent and extended from an end of the spring portion and is inserted into the through hole; and a soldering portion for soldering the end portion of the insertion portion to a mounting target substrate,
the width of the contact portions of the ground contact in the arrangement direction is wider than the width of the contact portions of the signal contact in the arrangement direction.
4. The socket of claim 2,
the contact has: a contact portion which contacts a substrate of a communication object; a spring portion extending from an end of the contact portion; an insertion portion that is bent and extended from an end of the spring portion and is inserted into the through hole; and a soldering portion for soldering the end portion of the insertion portion to a mounting target substrate,
the width of the spring portions of the ground contact in the arrangement direction is narrower than the width of the spring portions of the signal contact in the arrangement direction.
5. The socket of claim 2,
the contact has: a contact portion which contacts a substrate of a communication object; a spring portion extending from an end of the contact portion; an insertion portion bent and extended from an end of the spring portion and inserted into the through hole; and a soldering part connected with the end part of the insertion part and soldered on the substrate to be assembled,
the width of the insertion portions of the ground contacts in the arrangement direction is narrower than the width of the insertion portions of the signal contacts in the arrangement direction.
6. The socket of claim 2,
the contact has: a contact portion which contacts a substrate of a communication object; a spring portion extending from an end of the contact portion; an insertion portion bent and extended from an end of the spring portion and inserted into the through hole; and a soldering portion for soldering the end portion of the insertion portion to a mounting target substrate,
a width of the contact portions of the ground contact in the arrangement direction is wider than a width of the contact portions of the signal contact in the arrangement direction,
the width of the spring portions of the ground contacts in the arrangement direction is narrower than the width of the spring portions of the signal contacts in the arrangement direction,
the width of the insertion portions of the ground contacts in the arrangement direction is narrower than the width of the insertion portions of the signal contacts in the arrangement direction.
7. The socket according to any one of claims 2 to 6,
the connecting portion connects the insertion portions of the plurality of adjacent ground contacts in the arrangement direction.
8. The receptacle according to any one of claims 2 to 6,
the connecting portion is a connecting bar extending in the arrangement direction,
the contact strip is fixed to one surface of the adjacent ground contacts in the arrangement direction.
9. The socket of claim 8,
the contact strip is connected with one surface of the grounding contact, avoids the signal contact and is bent approximately in a shape of 'コ'.
10. The socket according to any one of claims 2 to 6,
the contact is provided with a round hole,
the coupling portion has a metal joint bar and a plurality of projecting portions projecting from one surface of the joint bar,
the plurality of protrusions of the coupling portion are fitted into the circular holes of the plurality of adjacent ground contacts in the arrangement direction.
11. The socket according to any one of claims 1 to 6,
for the signal contacts, two adjacent signal contacts form a channel of high-speed differential transmission in pairs,
each pair of the signal contacts is arranged apart from each other in the arrangement direction and in an orthogonal direction orthogonal thereto,
the ground contacts are disposed at positions adjacent to each other in the arrangement direction and positions adjacent to each other in the orthogonal direction of each pair of the signal contacts, and surround the pair.
12. The socket according to any one of claims 1 to 6,
an insulating member extending in one direction is provided,
contacts arranged side by side in the arrangement direction are inserted into the insulating member,
the insulating member is bridged between the opposing wall portions of the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121717104.6U CN216794153U (en) | 2021-07-27 | 2021-07-27 | Socket with improved structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121717104.6U CN216794153U (en) | 2021-07-27 | 2021-07-27 | Socket with improved structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216794153U true CN216794153U (en) | 2022-06-21 |
Family
ID=81998697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121717104.6U Active CN216794153U (en) | 2021-07-27 | 2021-07-27 | Socket with improved structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216794153U (en) |
-
2021
- 2021-07-27 CN CN202121717104.6U patent/CN216794153U/en active Active
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| GR01 | Patent grant |