TWM585435U - Electrical connector - Google Patents

Abstract

This creation discloses an electrical connector including an insulating body having a plurality of terminal slots and a conductive terminal housed in the terminal slot; the insulating body has an upper surface and a lower surface, and the terminal slots run through the upper and lower portions. Surface; the conductive terminal includes a first main body portion and a second main body portion fixed to a terminal groove, an elastic portion bent upward from the first end of the main body portion, and a welding portion, and the first main body portion and the first The two main body portions are connected to each other by a connecting portion; a lower end of the second main body portion is formed with a first branch and a second branch separated from each other, and the welding portion is formed by continuing to extend from the first branch, and the first A slit is formed between the branch and the second branch, and the slit has a lateral width, and the value of the lateral width lies between 0.1-0.25 mm, thereby reducing the impedance of the entire electrical connector.

Description

Electric connector

The present 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 end of the electrical connector terminal is provided with a contact portion that elastically abuts the conductive pad of the central processing unit, and the lower end is provided with a soldering portion to be soldered to the circuit board. The contact portion is generally connected with an inclined extending elastic arm to provide Flexible mechanical characteristics ensure reliable contact between the contact portion and the central processing unit. The welding portion generally has a long distance from the holding portion on the upper portion of the terminal. However, due to the large number of terminals and high requirements for mechanical properties, it is necessary to ensure the mechanical properties of the terminals while reducing the terminal's characteristic impedance to the greatest extent. Difficult problem.

Therefore, it is necessary to design a new scheme to improve the above problems.

The technical problem to be solved in this creation is to provide an electrical connector with better impedance matching.

In order to solve the above technical problems, the present invention may adopt the following technical solutions: an electrical connector including an insulating body having a plurality of terminal slots and conductive terminals housed in the terminal slots; the insulating body having an upper surface and a lower surface The terminal slot penetrates the upper and lower surfaces; the conductive terminal includes a first main body portion and a second main body portion fixed to the terminal slot, an elastic portion bent and extending upward from the first end of the main body portion, and A welding part, wherein the first body part and the second body part are connected to each other through a connecting part; a lower end of the second body part is formed with a first branch and a second branch separated from each other, and the welding part is formed from the first A branch continues to form, and a slit is formed between the first branch and the second branch. The slit has a lateral width, and the value of the lateral width is between 0.1 and 0.25 mm.

Compared with the prior art, the conductive terminals of the electrical connector of the present invention are provided with several branches of longer length near one end of the soldering part, and the distance between the branches is a certain distance, so that the lateral distance between adjacent terminals is smaller, and the entire The impedance of the electrical connector is reduced to improve the high-frequency transmission performance of the 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 is used to electrically connect the chip module 200 to the circuit board 300. The electrical connector 100 includes an insulating body 1 having a plurality of terminal slots 13, and a plurality of conductive terminals 2 housed in the terminal slots 13. And a solder ball 3 for soldering the conductive terminal 2 to the circuit board 300. The electrical connector 100 further includes a reinforcing sheet 101 framed around the insulating body 1, a pressing plate 102 rotatably assembled on opposite sides of the reinforcing sheet 101, and a rocker 103 that fixes the pressing plate 102 to the reinforcing sheet 101. The conductive terminal has a first direction X, a second direction Y, and a third-party direction Z that is perpendicular to the first direction X and the second direction Y.

Referring to the first to fourth figures, the insulating body 1 has an upper surface 11 and a lower surface 12, and the terminal groove 13 penetrates the upper and lower surfaces 11, 12; in conjunction with FIG. 2 and FIG. 3, the conductive The terminal 2 includes a first body portion 21, a second body portion 22, an elastic portion 23 bent and extended from an upper end of the first body portion 21, a welding portion 24 extending from a lower end of the second body portion 22, The second body portions 21 and 22 are fixed in the terminal groove 13, and in the second direction Y and the third party direction Z, one side of the first body portion 21 is connected to the second body portion 22 and the An included angle is formed between the first body portion 21 and the second body portion 22, and the included angle is preferably 90 degrees. The first body portion 21 and the second body portion 22 are connected by a connecting portion 25. The connecting portion 25 is close to the welding portion 24.

The first body portion 21 and the elastic portion 23 are connected by a bending portion 26. The bending portion 26 extends upward and forward from the first body portion, and the elastic portion 23 includes A flat plate portion 231 extending obliquely upward from the first main body portion 21 and a contact portion 232 bent and extended further upward from the flat plate portion 231. The lateral width of the flat plate portion 231 is larger than the contact portion 232 and the bent portion. In the transverse width of 26, the flat plate portion 231 has a shape with two small ends and a large middle portion, and the middle portion of the flat plate portion 231 projects to both outer sides, so that the conductive terminal 2 has sufficient arm force. The width of the flat plate portion 231 is larger than the contact portion. 232 and the width of the bent portion 26, when the chip module 200 presses down the electrical connector 100, the conductive terminal 2 can stably achieve an electrical connection with the chip module 200, which effectively avoids The contact portion of the conventional conductive terminal is only narrowed upward from the root portion or has the same size, which leads to the disadvantage that the conductive terminal is prone to breakage or insufficient elasticity.

Referring to the second and third figures, the first main body portion 21 includes a vertical portion 211 and a narrowed portion 212 extending upward from the vertical portion 211. The width of the bent portion 26 and the reduced portion The width of the narrow portion 212 is the same. The width of the narrowed portion 212 is smaller than the width of the vertical portion 211. The vertical portion 211 has a substantially trapezoidal shape. The trapezoidal hypotenuse is connected to the narrowed portion 212. The narrowed portion 212 is rectangular, and one end of the rectangle is connected to the hypotenuse of the trapezoid, and the hypotenuse extends from the narrowed portion 212 so that the vertical portion 211 is wider than the narrowed portion. 212 is set in this way, mainly because the vertical portion 211 is provided with a longer downward extending extension to adjust the impedance, but the overall width of the first main body portion 21 is wider in the upward extending direction By reducing the width of the first main body portion 21, during the process of connecting the electrical connector 100 to the chip module 200, due to the increasing number of terminals, it is required to ensure the impedance adjustment at the bottom of the terminal. Do not make the upper side of the conductive terminal 2 have a greater resistance to the downward direction of the chip module 200 Made of force, thus ensuring the elasticity of demand when the conductive terminal 2 and the top module electrically connected to the wafer.

The second body portion 22 includes an extension portion 222 located above and a fixing portion 221 extending downward from the extension portion 222. A width of the fixing portion 221 is greater than a width of the extension portion 222. In the first direction X, a lower end of the second body portion 22 is formed with a first branch 223 and a second branch 224 spaced apart from each other, and the welding portion 24 continues to extend from the first branch 223 and Forming, a slit 20 is formed between the first branch 223 and the second branch 224, and the slit 20 has a lateral width, and the value of the lateral width is between 0.1-0.25 mm (mm), The second branch 224 has an upper and lower length, and the value of the upper and lower length is located between 0.25 and 0.4 mm. The first body portion 21, the connecting portion 25, and the second branch 224 have lower end faces a1, a2, and a3. The lower end face a1 of the first main body portion 21 extends downward from the lower end face a2 of the connecting portion 25. A lower end surface a3 of the second branch 224 extends downward from a lower end surface a2 of the connecting portion 25. The top wall of the slit 20 and the lower end surface a2 of the connecting portion 25 are horizontally aligned with each other, the lower end surface a1 of the first main body portion 21 and the lower end surface a3 of the second branch 224 are horizontally aligned with each other, and the second branch 224 The lower end surfaces a3 and a1 of the first main body portion 21 are higher than the top surface of the welding portion 24. Each side of the first main body portion 21 and the second main body portion 22 remote from the connection portion 25 is provided with a holding portion that can be held to the insulating body 1. The holding portion includes the first main body portion 21. A first holding portion 213 on the upper side and a second holding portion 225 on the second body portion 22, the insulating body 1 is provided with a holding groove for holding and matching with the first holding portion 213 and the second holding portion 225 (Not shown). A side of the second branch 224 far from the first branch 223 is flush with the second holding portion 225 in a vertical direction.

Referring to the first figure, when the chip module 200 is assembled to the electrical connector 100, the pressing plate 102 is pressed to the periphery of the chip module 200, and then the rocker 103 is fixed to the The reinforcing sheet 101 is used to electrically connect the chip module 200 and the electrical connector 100. At this time, because the size of the bottom area of the conductive terminal 2 is increased, the lower side of the conductive terminal 2 has a lower impedance. Further, a first branch 223 is disposed below the second body portion 22. And a second branch 224, a slit 20 is formed between the first branch 223 and the second branch 224, and the slit 20 has a lateral width, and the value of the lateral width is between 0.1 and 0.25 mm The second branch 224 has an upper and lower length, and the value of the upper and lower length is located between 0.25 and 0.4 mm, which can make the overall impedance of the electrical connector 100 smaller, and the slit 20 is optimal. When the lateral width of the electrical connector is 0.12 mm and the length of the second branch 224 is 0.3 mm, the overall impedance of the electrical connector 100 is the smallest.

In summary, when the wafer module 200 is assembled to the electrical connector 100 in this creation, the flat plate portion 231 of the conductive terminal 2 is parallel to the upper surface 11 of the insulating body 1, which can make the When the wafer module 200 is pressed downward, the abutment pressure of the entire terminal module becomes more balanced, and the bottom end of the terminal can also be provided with several branches, which lengthens the length of the terminal, so that the adjacent conductive terminal 2 The lateral distance between the bottoms of the electrical connectors is reduced, so that the impedance of the entire electrical connector 100 is reduced, so as to improve the high-frequency transmission performance of the electrical connector 100.

The above embodiments are preferred implementations of the creation, but not all implementations. Any equivalent change to the technical solution of the creation by a person of ordinary skill in the art by reading the description of the novel model is covered by the scope of patent application of the novel model.

100‧‧‧electrical connector

200‧‧‧Chip Module

300‧‧‧Circuit Board

101‧‧‧ Enhancement

102‧‧‧Press plate

103‧‧‧Joystick

1‧‧‧Insulated body

11‧‧‧ top surface

12‧‧‧ lower surface

13‧‧‧Terminal Slot

2‧‧‧ conductive terminals

20‧‧‧ slit

21‧‧‧First body

211‧‧‧Vertical

212‧‧‧Narrowed

213‧‧‧The first holding department

22‧‧‧Second main body

221‧‧‧Fixed section

222‧‧‧ extension

223‧‧‧First branch

224‧‧‧Second Branch

225‧‧‧Second Holding Department

23‧‧‧Elastic section

231‧‧‧ Flat Department

232‧‧‧Contact

24‧‧‧ Welding Department

25‧‧‧Connecting Department

26‧‧‧ Bend section

3‧‧‧ solder ball

a1, a2, a3‧‧‧ lower end face

The first figure is a perspective view of the novel electrical connector and chip module;

The second figure is a perspective view of the conductive terminal after the conductive terminal is taken out of the novel electrical connector;

The third view is a perspective view from another angle of the first view; and

The fourth figure is a cross-sectional view when the electrical connector of the first figure is not loaded into a chip module.

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 conductive terminal is housed in the terminal slot. The conductive terminal includes a first body portion and a second body portion fixed to the terminal slot, an elastic portion bent upward from the upper end of the body portion, and welding. Part, the first body part and the second body part are connected to each other through a connecting part;
Wherein, a lower end of the second main body portion is formed with a first branch and a second branch separated from each other, the welding portion is formed by continuing to extend from the first branch, and the first branch and the second branch A slit is formed therebetween, and the slit has a lateral width, and the value of the lateral width is located between 0.1 and 0.25 mm. The electrical connector according to item 1 of the scope of patent application, wherein the first main body portion, the connecting portion, and the second branch have lower end surfaces, and the lower end surface of the first main body portion is lower than the lower end surface of the connecting portion. Extending, the lower end surface of the second branch extends downward from the lower end surface of the connecting portion. The electrical connector according to item 1 of the scope of patent application, wherein the second branch has an upper and lower length, and the value of the upper and lower length is located between 0.25 and 0.4 mm. The electrical connector according to item 2 of the scope of patent application, wherein a top wall of the slit and a lower end surface of the connection portion are horizontally aligned with each other. The electrical connector according to item 2 of the scope of patent application, wherein the lower end surface of the first main body portion and the lower end surface of the second branch are horizontally aligned with each other. The electrical connector according to item 2 of the scope of patent application, wherein the second branch and the lower end surface of the first main body portion are higher than the welding portion. The electrical connector according to item 1 of the scope of patent application, wherein the first body portion includes a vertical portion and a narrowed portion extending upward from the vertical portion, and the narrowed portion has a width smaller than that of the vertical portion. The width of the straight portion. The second body portion includes an extension portion located above and a fixing portion extending downward from the extension portion. The width of the fixing portion is greater than the width of the extension portion. The electrical connector according to item 7 of the scope of patent application, wherein the elastic portion includes a flat plate portion bent upward from the first main body portion and a contact portion further extended upward from the flat plate portion, the elasticity The portion is connected to the first main body portion by a bent portion. The width of the flat plate portion is greater than the width of the contact portion and the bent portion. The width of the bent portion and the width of the narrowed portion. the same. The electrical connector according to item 8 of the scope of patent application, wherein the flat plate portion is small on both sides and large in the middle, and the middle portion is protruded to the periphery of both sides. The electrical connector according to item 9 of the scope of patent application, wherein the first body portion and the second body portion are each provided with a holding portion on a side away from the connection portion, and the second branch is far away from the connection portion. One side of the first branch is flush with the holding portion upward.