TW201939823A - Electrical connector - Google Patents

Abstract

An electrical connector includes an insulative housing defining a plurality of terminal grooves extends through an upper surface and a lower surface of the housing, and the terminals received in the terminal grooves. The terminal includes a first retaining portion and a second retaining portion both fixed in the terminal groove, an elastic portion bending from an upper edge of the first retaining portion and beyond the upper surface of the insulative housing, and a soldering portion extending from a lower edge of the second retaining portion. The elastic portion includes an inclined portion and a contact portion extending from the inclined portion for contacting with a chip module. An elongated slot is defined at a curved joint of the elastic portion and the slot extends from the first retaining portion to the elastic portion. The elongated slot can be adjusted with its length, width and position according to actual needs, thereby reducing space between adjacent terminals for reducing impedance of the entire electrical connector.

Description

Electric connector

The invention relates to an electrical connector, and in particular to an electrical connector for connecting a chip module.

With the vigorous development of concepts such as big data, cloud computing, and the Internet of Things, almost every new product is talking about high-speed transmission applications, and each application module is moving towards high-speed directions to achieve the aforementioned high-speed transmission applications. Of course, the input / output interface connecting various modules also needs high-speed transmission. The central processor, which is the core part of computers and servers, is moving towards higher speeds and more pins. Therefore, for the connection to the central The electrical connector between the processor and the motherboard also puts forward higher and higher requirements. In the actual high-frequency test, the upper head of the electrical connector pin elastically abuts the conductive pad of the central processing unit, and the lower head is soldered to the circuit board. Ensure contact with the central processing unit. The characteristic impedance of the terminal cantilever beam has always been a difficult problem, and the number of terminals is large, which requires high mechanical performance. It is necessary to reduce the characteristic impedance of the terminal to the greatest extent while ensuring the mechanical performance of the terminal.

Therefore, in view of the above problems, it is necessary to provide a new technical solution to solve the above problems.

An object of the present invention is to provide an electrical connector capable of effectively improving impedance performance.

In order to solve the above technical problem, the present invention provides an electrical connector including an insulating body having a plurality of terminal slots and a plurality of terminals housed in the terminal slots; the insulating body having an upper surface and a lower surface, the terminal slots Penetrates the upper and lower surfaces; the terminal includes a first retaining portion and a second retaining portion fixed in the terminal, an elastic portion bent from the upper edge of the first retaining portion and extending out of the upper surface of the insulating body, and A soldering portion extending from a lower edge of the second holding portion, the elastic portion includes an inclined portion and a contact portion extending from the inclined portion to contact the wafer module; the elastic portion and the first holding portion An elongated slot is formed at the arc-shaped interface, and the slot extends from the first holding portion to the elastic portion.

Compared with the prior art, the present invention has at least the following beneficial effects: by providing an elongated slot extending up and down at the arcuate junction of the elastic portion and the first holding portion, the slot in the stress concentration area of the terminal can be It is necessary to adjust its length, width and position, so the terminal can further widen its retaining portion and elastic portion while ensuring mechanical performance. Under the same circumstances, the distance between adjacent terminals can be reduced accordingly, thereby reducing The impedance of the entire electrical connector.

In the following, specific embodiments of the electrical connector 100 according to the present invention will be described with reference to the first to fourth figures. The electrical connector 100 of the present invention is used to connect a chip module 104 such as a central processing unit (CPU) to a circuit board 106. The electrical connector 100 includes an insulating body 105 having a plurality of terminal slots (not labeled) and receiving the terminals. A plurality of terminals 20 in the slot. The electrical connector 100 further includes a reinforcing sheet 101 framed around the insulating body 105, a pressing plate 102 rotatably assembled on opposite sides of the reinforcing sheet 101, and a rocker 103 fixing the pressing plate 102 to the reinforcing sheet 101.

Please refer to the first to fourth figures. The insulating body 105 has an upper surface 1051 and a lower surface 1052, and the terminal groove runs through the upper and lower surfaces 1051 and 1052. The terminal 20 includes a fixed portion. The first holding portion 21 and the second holding portion 22 in the terminal 20, the elastic portion 23 bent from the upper edge of the first holding portion 21 and extending from the upper surface 1051 of the insulating body 105, and extending from the lower edge of the second holding portion 22. The welding portion 24, the elastic portion 23 and the first holding portion 21 are provided with an elongated slot 25 penetrating up and down at an arc-shaped junction 26 thereof, and the slot 25 extends from the first holding portion 21 To the elastic portion 23.

Referring to the second to third figures, the elastic portion 23 includes an inclined portion 231 and a contact portion 232 extending from the inclined portion 231 to contact the chip module 104. The contact portion 232 The tapered portion 2321 includes a tapered portion 2321 extending obliquely upward from the inclined portion 231 and gradually narrowing, and a head portion 2322 bent and extended from one end of the tapered portion 2321. Since the width of the terminal 20 is increased, the thickness thereof can be appropriately reduced, and the width of the head portion 2322 can also be reduced to a minimum limit state. Therefore, the mechanical performance of the contact portion 232 is also greatly improved, making the terminal 20 is better in connection with the chip module 104 and is not easily deformed.

In this embodiment, the slot 25 is located in the middle of the arc-shaped junction 26, and the width of the portion of the slit 25 in the arc-shaped junction 26 does not exceed one third of the width of the arc-shaped junction 26, wherein The arc-shaped junction has the same width as the first holding portion 21 and is both 0.45 mm, and the width of the portion of the slot 25 located at the arc-shaped junction is 0.12 mm. The width of the slot 25 at the first holding portion 21 and the inclined portion 231 is greater than the width of the portion 26 at the arc-shaped junction 26. The slot 25 has a narrow dog bone structure with a wide middle. The width of the slot 25 in the first holding portion 21 and the inclined portion 231 is 0.16 mm, and the total length of the slot 25 is 0.75 mm. In the actual implementation process, the slot 25 may also be selected from traditional rectangular, oval, and other shapes. The slot 25 is located in the stress concentration area of the terminal 20, and its length, width, and position can be adjusted according to actual needs. Therefore, the terminal 20 can be further widened while ensuring mechanical performance. Under the same conditions, adjacent terminals 20 The spacing between them can be reduced accordingly, thereby reducing the impedance of the entire electrical connector 100.

Please refer to the second to third figures, the first holding portion 21 and the second holding portion 22 are in a plate-like structure, and the two are connected by an intermediate portion 27, and the first and second holding portions 21, 22 is arranged perpendicular to each other. The first holding portion 21 and the elastic portion 23 have the same width, and the outer edges of the first holding portion 21 and the second holding portion 22 are provided with a recessed portion and a fixed barb 28 formed between the recessed portions. An outer edge of the second holding portion 22 is provided with a fixed barb 28 protruding outward. A first branch 221 and a second branch 222 are provided at a lower edge of the second holding portion 22 at intervals. The first branch 221 is connected to the welding portion 24. The welding portion 24 is horizontal and can be accommodated. In the terminal slot. A narrow gap is formed between the first holding portion 21 and the second holding portion 22 and between the first branch 221 and the second branch 222. The entire electrical connector 100 can also be reduced by adjusting the width of the two gaps. The impedance.

In the present invention, a slot 25 is provided at the arc-shaped junction of the elastic portion 23 and the first holding portion 21 so that the slot 25 is located in the stress concentration area of the terminal 20, and the length and width of the slot 25 can be adjusted according to actual needs And position, the terminal 20 can further widen the first retaining portion 21 and the elastic portion 23 while ensuring mechanical performance. Under the same circumstances, the distance between adjacent terminals 20 can be reduced accordingly, thereby reducing The impedance of the entire electrical connector.

According to the present invention, the first holding portion 21 and the second holding portion 22 and the first branch 221 and the second branch 222 adjust the impedance of the entire terminal 20 while ensuring that the elastic portion 23 has predetermined mechanical properties, so that Predetermined impedance value, so as to meet the needs of high-speed signal transmission.

The above descriptions are only part of the embodiments of the present invention, not all of them. Any equivalent changes made by those of ordinary skill in the art to the technical solutions of the present invention by reading the description of the present invention are covered by the claims of the present invention. .

100‧‧‧electrical connector

101‧‧‧ Enhancement

102‧‧‧Press plate

103‧‧‧Joystick

104‧‧‧Chip Module

105‧‧‧Insulated body

1051‧‧‧ Top surface

1052‧‧‧Lower surface

106‧‧‧Circuit Board

20‧‧‧Terminal

21‧‧‧The first holding department

22‧‧‧Second Holding Department

221‧‧‧ first branch

222‧‧‧Second Branch

23‧‧‧Elastic section

231‧‧‧inclined

232‧‧‧Contact

2321‧‧‧Tapered

2322‧‧‧Head

24‧‧‧ Welding Department

25‧‧‧Slot

26‧‧‧arc junction

27‧‧‧ middle

28‧‧‧ barb

The first diagram is a perspective view before the electrical connector of the present invention is matched with a chip module;

The second diagram is a perspective view of the electrical connector terminal shown in the first diagram;

The third view is a perspective view of the electrical connector terminal shown in the second view at another angle; and

The fourth diagram is a schematic cross-sectional view of the electrical connector shown in the first diagram when it is mated with a chip module and a circuit board.

no

Claims (10)

An electrical connector includes: An insulating body having a plurality of terminal grooves, the insulating body having an upper surface and a lower surface, and the terminal grooves penetrating the upper and lower surfaces; The plurality of terminals are housed in the terminal slot, the terminal includes a first holding portion and a second holding portion fixed in the terminal, and is bent from the upper edge of the first holding portion to extend out of the upper surface of the insulating body. An elastic portion and a welding portion extending from the lower edge of the second holding portion, the elastic portion includes an inclined portion and a contact portion extending from the inclined portion to contact the chip module; Wherein, the elastic portion and the first holding portion are provided at the arc-shaped interface with an elongated slot that penetrates up and down, and the slot extends from the first holding portion to the elastic portion. The electrical connector according to item 1 of the scope of patent application, wherein the first holding portion and the second holding portion are in a plate-like structure, and the two are connected by an intermediate portion, and the first and second holding portions are mutually Vertical setting. The electrical connector according to item 1 of the scope of patent application, wherein the first holding portion and the elastic portion have the same width, and the outer edges of the first holding portion and the second holding portion are provided with recessed portions and formed A fixed barb is provided between the recessed portions, and an outer edge of the second holding portion is provided with a fixed barb protruding outward. The electrical connector according to item 1 of the scope of patent application, wherein the contact portion includes a tapered portion extending obliquely upward from the inclined portion and gradually reducing, and an arcuate extension extending from one end of the tapered portion. head. The electrical connector according to item 4 of the scope of patent application, wherein the width of the slot at the first holding portion and the inclined portion is greater than the width of the portion at the arc-shaped junction, and the slot is narrow in the middle and wide at both ends. Structure. The electrical connector according to item 1 of the scope of patent application, wherein the slot is located in the middle of the arc-shaped junction, and the width of the portion at the arc-shaped junction does not exceed one third of the width of the arc-shaped junction One. The electrical connector according to item 1 of the scope of patent application, wherein the lower edge of the second holding portion is provided with first and second branches spaced apart, the first branch is connected to the welding portion, and the welding The part is horizontal and can be received in the terminal slot. The electrical connector according to item 1 of the scope of patent application, wherein the width of the arc-shaped junction and the first holding portion are both 0.45 mm, and the width of the portion of the slot at the arc-shaped junction is 0.12 mm . The electrical connector according to item 8 of the scope of patent application, wherein the width of the slot in the first holding portion and the inclined portion is 0.16 mm, and the total length of the slot is 0.75 mm. The electrical connector according to item 1 of the scope of patent application, wherein the electrical connector includes a reinforcing sheet framed around the periphery of the insulating body, pressure plates rotatably assembled on opposite sides of the reinforcement sheet, and fixing the pressure plate to the reinforcement Tablet rocker.