CN110277670B

CN110277670B - Electrical connector with improved contact arrangement

Info

Publication number: CN110277670B
Application number: CN201810216403.8A
Authority: CN
Inventors: 黄子耀
Original assignee: Fudin Precision Component Shenzhen Co ltd; Foxconn Interconnect Technology Ltd
Current assignee: Fudin Precision Component Shenzhen Co ltd; Foxconn Interconnect Technology Ltd
Priority date: 2018-03-16
Filing date: 2018-03-16
Publication date: 2022-07-26
Anticipated expiration: 2038-03-16
Also published as: TWI758591B; TW201939823A; CN110277670A

Abstract

An electric connector comprises an insulating body with a plurality of terminal slots and a plurality of terminals accommodated in the terminal slots; the insulation body is provided with an upper surface and a lower surface, and the terminal groove penetrates through the upper surface and the lower surface; the terminal comprises a first fixing part and a second fixing part which are fixed in the terminal, an elastic part which is bent from the upper edge of the first fixing part and extends out of the upper surface of the insulating body, and a welding part which extends from the lower edge of the second fixing part, wherein the elastic part comprises an inclined part and a contact part which continues to extend from the inclined part and is used for being contacted with the chip module; the elastic part and the first fixing part are provided with a strip-shaped slot which penetrates through the elastic part from top to bottom at the arc junction, the slot extends from the first fixing part to the elastic part, the length, the width and the position of the slot can be adjusted according to actual requirements, and the distance between adjacent terminals is reduced, so that the impedance of the whole electric connector is reduced.

Description

Electrical connector with improved contact arrangement

[ technical field ] A method for producing a semiconductor device

The present invention relates to an electrical connector, and more particularly, to an electrical connector for connecting a chip module.

[ background of the invention ]

With the rapid development of concepts such as big data, cloud computing, internet of things, and the like, almost every new product is talking about high-speed transmission application, and each application module is developed in a high-speed direction to realize the aforementioned high-speed transmission application, and certainly, an input/output interface for connecting each module also needs high-speed transmission, while a central processing unit serving as a core part of a computer, a server, and the like is developed in a direction of higher speed and more pins, and thus, higher and higher requirements are also provided for an electrical connector for connecting the central processing unit and a motherboard. In the actual high frequency test, the upper end of the electric connector pin is elastically abutted to the conductive gasket of the central processing unit, the lower end is welded to the circuit board, and the upper end is an inclined elastic cantilever beam generally so as to provide the flexible mechanical characteristic and ensure the contact with the central processing unit. The characteristic impedance of the terminal cantilever beam is always a difficult problem, the number of terminals is large, the requirement on mechanical performance is high, and the characteristic impedance of the terminal needs to be reduced to the maximum degree while the mechanical performance of the terminal is ensured.

Therefore, there is a need to provide an electrical connector with better performance to further improve the above problems.

[ summary of the invention ]

The invention aims to provide an electric connector capable of effectively improving impedance performance.

In order to achieve the purpose, the invention adopts the following technical scheme: an electric connector comprises an insulating body with a plurality of terminal slots and a plurality of terminals accommodated in the terminal slots; the insulation body is provided with an upper surface and a lower surface, and the terminal groove penetrates through the upper surface and the lower surface; the terminal comprises a first fixing part and a second fixing part which are fixed in the terminal, an elastic part which is bent from the upper edge of the first fixing part and extends out of the upper surface of the insulating body, and a welding part which extends from the lower edge of the second fixing part, wherein the elastic part comprises an inclined part and a contact part which continues to extend from the inclined part and is used for being contacted with the chip module; the elastic part and the first fixing part are provided with a strip-shaped slot which penetrates through the elastic part up and down at the arc-shaped junction, and the slot extends from the first fixing part to the elastic part.

Furthermore, the first holding part and the second holding part are in a plate-shaped structure and are connected by a middle part, and the first holding part and the second holding part are arranged vertically.

Furthermore, the first fixing part and the elastic part have the same width, the outer side edges of the first fixing part and the second fixing part are provided with concave parts and fixing barbs formed between the concave parts, and the outer side edges of the second fixing part are provided with fixing barbs protruding outwards.

Further, the contact portion includes a tapered portion extending obliquely upward from the inclined portion and having a tapered shape, and a head portion extending from one end of the tapered portion in an arc-shaped bent manner.

Furthermore, the width of the slot at the first holding part and the inclined part is larger than that at the arc-shaped junction, and the slot is narrow in the middle and wide at two ends.

Further, the slot is located intermediate the arcuate intersection and has a width at the arcuate intersection that is no more than 1/3 the width of the arcuate intersection.

Furthermore, the lower edge of the second holding portion is provided with a first branch and a second branch which are arranged at intervals, the first branch is connected to the welding portion, and the welding portion is horizontal and can be accommodated in the terminal groove.

Further, the width of the arc-shaped junction is the same as that of the first holding part and is 0.45mm, and the width of the part, located at the arc-shaped junction, of the slot is 0.12 mm.

Further, the width of the slot at the first holding portion and the inclined portion is 0.16, and the total length of the slot is 0.75.

Furthermore, the electric connector comprises a reinforcing sheet arranged on the periphery of the insulating body, pressure plates respectively and rotatably assembled on two opposite sides of the reinforcing sheet, and a rocker for fixing the pressure plates to the reinforcing sheet.

Compared with the prior art, the invention at least has the following beneficial effects: the elongated slot penetrating up and down is arranged at the arc-shaped junction of the elastic part and the first fixing part, and the length, the width and the position of the slot positioned in the terminal stress concentration area can be adjusted according to actual requirements, so that the fixing part and the elastic part of the terminal can be further widened while the mechanical performance of the terminal is ensured, and the distance between adjacent terminals can be correspondingly reduced under the same condition, thereby reducing the impedance of the whole electric connector.

[ description of the drawings ]

Fig. 1 is a perspective view of the electrical connector of the present invention before mating with a chip module.

Fig. 2 is a perspective view of the terminal of the electrical connector shown in fig. 1.

Fig. 3 is a perspective view of the electrical connector terminal of fig. 2 at another angle.

Fig. 4 is a cross-sectional view of the electrical connector shown in fig. 1 mated with a chip module and a circuit board.

[ description of main element symbols ]

Reinforcing sheet 101 of electric connector 100

Pressure plate 102 rocker 103

Chip module 104 insulation body 105

Upper surface 1051 and lower surface 1052

Circuit board 106 terminal 20

First holding part 21 and second holding part 22

First branch 221 and second branch 222

Inclined portion 231 of elastic portion 23

Contact 232 taper 2321

Head 2322 weld 24

Arcuate intersection 26 of slot 25

Intermediate portion 27 barb 28

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

[ detailed description ] A

Hereinafter, an embodiment of the electrical connector 100 of the present invention will be described with reference to fig. 1 to 4. The electrical connector 100 is used for connecting a chip module 104 such as a Central Processing Unit (CPU) to a circuit board 106, and the electrical connector 100 includes an insulating body 105 having a plurality of terminal slots (not numbered) and a plurality of terminals 20 received in the terminal slots. The electrical connector 100 further includes a reinforcing plate 101 framed on the periphery of the insulating body 105, pressure plates 102 rotatably assembled on opposite sides of the reinforcing plate 101, and a rocker 103 for fixing the pressure plates 102 to the reinforcing plate 101.

As shown in fig. 1 to 4, the insulative body 105 has an upper surface 1051 and a lower surface 1052, and the terminal slots extend through the upper and

lower surfaces

1051, 1052; the terminal 20 includes a first holding portion 21 and a second holding portion 22 fixed in the terminal 20, an elastic portion 23 bent from the upper edge of the first holding portion 21 and extending out of the upper surface 1051 of the insulating body 105, and a soldering portion 24 extending from the lower edge of the second holding portion 22, wherein an elongated slot 25 passing through the elastic portion 23 and the first holding portion 21 is formed at an arc-shaped boundary 26 of the elastic portion 23 and the first holding portion 21, and the slot 25 extends from the first holding portion 21 to the elastic portion 23.

As shown in fig. 2 and 3, the elastic portion 23 includes an inclined portion 231 and a contact portion 232 extending from the inclined portion 231 for contacting the chip module 104, and the contact portion 232 includes a tapered portion 2321 extending from the inclined portion 231 in an upward inclined manner and tapering in a gradually decreasing manner, and a head portion 2322 bent and extending from one end of the tapered portion 2321 in an arc shape. Since the width of the terminal 20 is increased, the thickness thereof can be properly reduced, and the width of the head 2322 can be reduced to the minimum limit state, so the mechanical performance of the contact 232 is greatly improved, and the terminal 20 is better in connection with the chip module 104 and is not easy to deform.

In this embodiment, the slot 25 is located intermediate the arcuate junction 26, and the width of the portion of the arcuate junction 26 does not exceed 1/3 the width of the arcuate junction 26. The width of the slot 25 at the first holding portion 21 and the inclined portion 231 is greater than the width of the arc-shaped junction 26, and the slot 25 is in a dog bone structure with a narrow middle and wide ends. In practical implementation, the slot 25 may also be selected from a conventional rectangular shape, an elliptical shape, and the like. The slots 25 are located in the stress concentration regions of the terminals 20, and the lengths, widths and positions of the slots can be adjusted according to actual requirements, so that the terminals 20 can be further widened while ensuring mechanical performance, and in the same case, the spacing between adjacent terminals 20 can be correspondingly reduced, thereby reducing the impedance of the entire electrical connector 100.

As shown in fig. 2 and 3, the first holding portion 21 and the second holding portion 22 are plate-shaped and connected by an intermediate portion 27, and the first holding portion 21 and the second holding portion 22 are perpendicular to each other. The first holding portion 21 and the elastic portion 23 have the same width, and the outer side edges of the first holding portion 21 and the second holding portion 22 are provided with recessed portions and fixing barbs 28 formed between the recessed portions, and the outer side edges of the second holding portion 22 are provided with fixing barbs 28 protruding outward. The second holding portion 22 has a first branch 221 and a second branch 222 disposed at intervals on a lower edge thereof, the first branch 221 is connected to the soldering portion 24, and the soldering portion 24 is horizontal and can be received in the terminal groove. Narrow slits are formed between the first holding portion 21 and the second holding portion 22 and between the first branch 221 and the second branch 222, and the impedance of the entire electrical connector 100 can be reduced by adjusting the widths of the slits.

The slot 25 is arranged at the arc-shaped junction of the elastic part 23 and the first holding part 21, so that the slot 25 is positioned in the stress concentration area of the terminal 20, and the length, the width and the position of the slot 25 can be adjusted according to actual requirements, so that the first holding part 21 and the elastic part 23 of the terminal 20 can be further widened while the mechanical performance of the terminal 20 is ensured, and under the same condition, the distance between the adjacent terminals 20 can be correspondingly reduced, thereby reducing the impedance of the whole electric connector.

The first and

second holding portions

21 and 22 and the first and

second branches

221 and 222 of the present invention adjust the impedance of the whole terminal 20 to a predetermined impedance value while ensuring the predetermined mechanical performance of the elastic portion 23, so as to achieve the requirement of high-speed signal transmission.

The above description is only a part of the embodiments of the present invention, and not all embodiments, and any equivalent variations of the technical solutions of the present invention, which are made by those skilled in the art through reading the present specification, are covered by the claims of the present invention.

Claims

1. An electric connector comprises an insulating body with a plurality of terminal grooves and a plurality of terminals accommodated in the terminal grooves; the insulation body is provided with an upper surface and a lower surface, and the terminal groove penetrates through the upper surface and the lower surface; the terminal comprises a first fixing part and a second fixing part which are fixed in the terminal groove, an elastic part which is bent from the upper edge of the first fixing part and extends out of the upper surface of the insulating body, and a welding part which extends from the lower edge of the second fixing part, wherein the elastic part comprises an inclined part which is formed by upward inclined extension of the first fixing part and a contact part which is continuously extended from the inclined part and is used for contacting with the chip module; the method is characterized in that: the elastic part and the first fixing part are provided with a strip-shaped slot which penetrates through the elastic part from top to bottom at an arc junction, the slot extends from the first fixing part to the elastic part, the inclined part has the same width as the first fixing part, the width of the slot at the first fixing part and the inclined part is larger than that of the slot at the arc junction, and the slot has a structure with a narrow middle part and two wide ends.

2. The electrical connector of claim 1, wherein: the first fixing part and the second fixing part are in a plate-shaped structure and are connected by a middle part, and the first fixing part and the second fixing part are arranged vertically.

3. The electrical connector of claim 1, wherein: first fixing portion has the same width with the elastic component, just the outside edge of first fixing portion and second fixing portion is equipped with the depressed part and forms the fixed barb between the depressed part, the outside edge of second fixing portion is equipped with the fixed barb of outside salient.

4. The electrical connector of claim 1, wherein: the contact part comprises a tapered part which extends from the inclined part in an upward inclined manner and is in a gradually-reduced shape, and a head part which is bent and extends from one end of the tapered part in an arc manner.

5. The electrical connector of claim 1, wherein: the slot is located in the middle of the arc-shaped junction, and the width of the part of the slot located at the arc-shaped junction does not exceed 1/3 of the width of the arc-shaped junction.

6. The electrical connector of claim 1, wherein: the lower edge of the second fixing part is provided with a first branch and a second branch which are arranged at intervals, the first branch is connected to the welding part, and the welding part is horizontal and can be accommodated in the terminal groove.

7. The electrical connector of claim 1, wherein: the width of the arc-shaped junction is the same as that of the first fixing part and is 0.45mm, and the width of the part, located at the arc-shaped junction, of the slot is 0.12 mm.

8. The electrical connector of claim 7, wherein: the width of the slot at the first holding part and the inclined part is 0.16, and the total length of the slot is 0.75.

9. The electrical connector of claim 1, wherein: the electric connector comprises a reinforcing sheet arranged on the periphery of the insulating body, pressure plates respectively and rotatably assembled on two opposite sides of the reinforcing sheet, and a rocker for fixing the pressure plates to the reinforcing sheet.