TW201946337A - Electrical contact - Google Patents

Abstract

An electrical contact for connecting a chip module to a print circuit board, the electrical contact comprises a main body, an upper elastic arm and a lower mounting arm extending upwardly from the main body, and a lower elastic arm and a lower mounting arm extending downwardly from the main body. The upper mounting arm is disposed at the downside of the upper elastic arm and forms a space therebetween; the lower mounting arm is disposed at the downside of the lower elastic arm and forms a space therebetween. The upper elastic arm and the lower elastic arm are respectively deformed by the chip module and print circuit board to resist to the upper mounting arm and lower mounting arm, thereby shortening the current path between the chip module and the print circuit board for improving the high frequency performance of an electrical connector.

Description

Conductive terminal

The present invention relates to a conductive terminal, and more particularly to a conductive terminal for connecting a chip module.

Please refer to US Patent No. US6824396B2, which discloses an electrical connector including an insulating body and a conductive terminal. The conductive terminal includes a holding portion fixed to the insulating body and upper elastic arms and upper and lower ends respectively connected to the holding portion. A lower elastic arm, the upper and lower elastic arms are respectively connected to a chip module and a circuit board, and when the chip module presses down the conductive terminal, the conductive terminal connects the chip module and the circuit board to achieve electrical conduction, Due to the current increasing requirements for the speed of high-frequency signals transmitted by electrical connectors, the upper and lower spring arms of such conductive terminals have to be set in a curved long arm shape due to the abutment requirements, which will cause the current path of the terminals to be too long , Which affects its high-frequency characteristics and limits its transmission rate.

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

The object to be achieved by the present invention is to provide a conductive terminal which can effectively improve high frequency characteristics.

In order to solve the above technical problem, the present invention provides a conductive terminal for electrically connecting a circuit board and a chip module. The conductive terminal includes a main body portion, an upper elastic arm and an upper arm extending from an upper end of the main body portion at the same time. A fixed arm, and a lower elastic arm and a lower fixed arm extending simultaneously from the lower end of the main body part, the upper fixed arm correspondingly located below the upper elastic arm and forming a gap with the upper elastic arm, the lower fixed arm Correspondingly located above the lower elastic arm and forming a gap with the lower elastic arm, the upper and lower elastic arms are respectively deformed by the chip module and the circuit board to abut against the corresponding upper and lower fixed arms.

Compared with the prior art, the present invention has at least the following beneficial effects: when the conductive terminal is docked, its upper elastic arm and lower elastic arm elastically abut against the corresponding upper fixed arm and lower fixed arm, which is not only beneficial to shortening the current of the conductive terminal It can also form a parallel conductive path inside the conductive terminal, which can reduce the total impedance value, improve the high-frequency characteristics of the conductive terminal, and increase the transmission rate of the conductive terminal.

In the following, specific implementations of the conductive terminal 100 according to the present invention will be described with reference to the first to fourth figures. The conductive terminal 100 of the present invention is used to electrically connect a circuit board 101 and a chip module 102. The conductive terminal 100 includes a main body portion 10, an upper elastic arm 11 and an upper fixed arm 12 extending upward from the main body portion 10, and at the same time. The main body portion 10 extends the lower elastic arm 13 and the lower fixing arm 14 downward.

Please refer to the third figure. The upper elastic arm 11 includes a first bent portion 111 bent from the upper end of the main body portion 10 in a direction away from the main body portion 10, and from the first bent portion. 111 a second bent portion 112 bent upward, and an arc-shaped upper contact portion 113 which continues to extend from the second bent portion 112 above the main body portion 10 and bends upward; the lower elastic arm 13 includes a A lower end of the main body portion 10 is bent toward a third bent portion 131 extending away from the main body portion 10; a fourth bent portion 132 bent downward from the third bent portion 131; The four bent portions 132 continue to extend below the main body portion 10 and are bent downwardly to the arc-shaped lower contact portion 133, and the upper and lower elastic arms 11, 13 are formed as "U" opening toward the plane where the main body portion 10 is located. Font settings. The upper and lower elastic arms 11 and 13 are respectively provided with slots 15 penetrating to the upper and lower ends corresponding to the main body portion 10, and the upper and lower fixed arms 12, 14 are respectively disposed on the upper and lower elastic arms 11, The slot 15 of 13 is protruded outside the corresponding slot 15.

Referring to the first to third figures, the main body portion 10 includes barbs 101 protruding from the left and right sides thereof, and a pair of tape portions 102 extending vertically from the upper end of the main body portion 10. The two material belt portions 102 are located on both sides of the upper elastic arm 11.

The upper fixed arm 12 includes a first extending portion 121 extending vertically and an upper abutting portion 122 extending obliquely from an upper end of the first extending portion 121. The lower fixing arm 14 includes a second extending portion extending vertically. 141 and a lower abutting portion 142 extending obliquely from a lower end of the second extending portion 141.

With reference to the fourth figure, the upper and lower contact portions 122 and 142 and the upper and lower contact portions 113 and 133 are staggered in the vertical direction and are located on one side in the thickness direction of the main body portion 10. The first, second, third, and fourth bending portions 111, 112, 131, and 132 are located on the other side in the thickness direction of the main body portion 10. The length of the upper and lower fixing arms 12 and 14 is shorter than the length of the corresponding upper and lower elastic arms 11 and 13.

In a preferred embodiment of the present invention, the upper elastic arm 11 and the lower elastic arm 13 are symmetrically disposed with the main body portion 10 as a center, and the upper fixed arm 12 and the lower fixed arm 14 are approximately centered with the main body portion 10. Symmetrical setting. Therefore, it is favorable for the elastic elastic deformation of the upper and lower elastic arms 11 and 13 to be symmetrical, and is beneficial to extending the service life of the conductive terminal 100.

Please refer to the fourth figure. The upper fixed arm 12 is located below the upper elastic arm 11 and forms a gap with the upper elastic arm 11. The lower fixed arm 14 is located above the lower elastic arm 13 and corresponds to A gap is formed between the lower elastic arms 13, and the upper and lower elastic arms 11 and 13 are respectively deformed by the chip module 102 and the circuit board 101 and abut against the corresponding upper and lower fixed arms 12 and 14 respectively. The upper elastic arm 11 moves downward due to the pressure and abuts the upper abutting portion 122, and the lower elastic arm 13 moves upward due to the pressure and abuts the lower abutting portion 142. When the upper and lower elastic arms 11, 13 are pressed against the corresponding upper and lower fixed arms 12, 14, the first, second, third, and fourth bending portions 111 of the upper and lower elastic arms 11, 13 , 112, 131, 132 are further bent due to pressure, and the upper and lower contact portions 113, 133 slide along the shape of the upper and lower contact portions 122, 142 to provide a supporting force, thereby preventing all The first and third bent portions 111 and 131 are excessively deformed due to compression, so as to avoid loss of elasticity of the conductive terminal 100 and extend the service life of the conductive terminal 100.

When the chip module 102 and the circuit board 101 are pressed against the conductive terminal 100, the upper and lower elastic arms 11, 13 are in contact with the upper and lower fixed arms 12, 14, respectively, so as to form parallel connections respectively. The conductive path can reduce the total impedance value, and can shorten the chip module 102 and the circuit board 101 to a certain extent compared with the traditional elastic terminal that can only transmit current through the curved long arm-shaped elastic arm. The current path between them improves the high-frequency characteristics of the conductive terminal 100 and the transmission rate of the terminal.

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

100‧‧‧Conductive terminal

10‧‧‧Main body

101‧‧‧ barb

102‧‧‧Tape Department

11‧‧‧ Upper arm

111‧‧‧The first bend

112‧‧‧The second bend

113‧‧‧ Upper contact

12‧‧‧ Upper fixed arm

121‧‧‧First extension

122‧‧‧ Upper abutment department

13‧‧‧ Lower arm

131‧‧‧ Third bend

132‧‧‧Fourth bend

133‧‧‧ lower contact

14‧‧‧ Lower fixed arm

141‧‧‧second extension

142‧‧‧ Lower abutment department

15‧‧‧Slot

The first figure is a perspective view when the conductive terminal of the present invention is not compressed;

The second figure is a perspective view of the conductive terminal shown in the first figure at another angle;

The third figure is a side view of the conductive terminal shown in the first figure; and

The fourth figure is a perspective view of the conductive terminal shown in the first figure when the chip module and the circuit board are pressed.

no

Claims (10)

A conductive terminal for electrically connecting a circuit board and a chip module includes: Main body Both the upper elastic arm and the upper fixed arm extend upward from the main body portion, and the upper fixed arm is correspondingly located below the upper elastic arm and forms a gap with the upper elastic arm; The lower elastic arm and the lower fixed arm both extend downward from the main body portion, and the lower fixed arm is correspondingly located above the lower elastic arm and forms a gap with the lower elastic arm; Wherein, the upper and lower elastic arms are respectively deformed by the chip module and the circuit board to be in contact with the corresponding upper and lower fixed arms. The conductive terminal according to item 1 of the patent application range, wherein the upper fixing arm includes a first extending portion extending vertically and an upper abutting portion extending obliquely from an upper end of the first extending portion, and the lower fixing arm The second elastic portion includes a vertically extending second extending portion and a lower abutting portion extending obliquely from a lower end of the second extending portion. The upper elastic arm moves downward due to pressure and abuts the upper abutting portion. The lower elastic arm moves upward due to the pressure and contacts the lower abutting portion. The conductive terminal according to item 2 of the scope of patent application, wherein when the conductive terminal is installed between the chip module and the circuit board, the elastic arm is crimped to the upper abutting portion , The lower elastic arm is crimped to the lower abutting portion. The conductive terminal according to item 2 of the scope of patent application, wherein the spring arm includes a first bent portion bent and extended from an upper end of the main body portion in a direction away from the main body portion, and from the first bent portion. A second bent portion that is bent upward, and an arc-shaped upper contact portion that continues from the second bent portion above the main body portion and is bent upward; the lower elastic arm includes a A third bending portion whose lower end is bent to extend away from the main body portion, a fourth bending portion which is bent downward from the third bending portion, and continues to extend from the fourth bending portion to the main body The arc-shaped lower contact portion bent downward and downward, and the upper and lower elastic arms are both arranged in a "U" shape with openings facing the plane where the main body portion is located. The conductive terminal according to item 4 of the scope of patent application, wherein when the upper and lower elastic arms are pressed against the corresponding upper and lower fixed arms, the first and second bent portions of the upper and lower elastic arms Being further bent due to pressure, the upper and lower contact portions slide along the shape of the upper and lower contact portions to provide a supporting force. The conductive terminal according to item 4 of the scope of patent application, wherein the upper and lower contact portions and the upper and lower contact portions are staggered in a vertical direction and are located on a side of a plane where the main body portion is located, so The first, second, third, and fourth bending portions are located on the other side of the plane where the main body portion is located. The conductive terminal according to item 1 of the scope of patent application, wherein the upper and lower elastic arms are each provided with a slot penetrating to the upper and lower ends corresponding to the main body portion, and the upper and lower fixing arms are correspondingly disposed on the upper portion. The slot of the lower elastic arm protrudes out of the corresponding slot. The conductive terminal according to item 1 of the scope of patent application, wherein the main body portion includes barbs protruding from the left and right sides thereof, and a pair of strip portions extending vertically from the upper end of the main body portion. The straps are located on both sides of the upper arm. The conductive terminal according to item 8 of the scope of patent application, wherein the upper elastic arm and the lower elastic arm are symmetrically disposed with the main body portion as a center, and the upper fixed arm and the lower fixed arm are approximately centered with the main body portion Symmetrical setting. The conductive terminal according to item 1 of the scope of patent application, wherein the length of the upper and lower fixed arms is shorter than the length of the corresponding upper and lower elastic arms.