JP2003197332A - Electric connector terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric connector terminal facilitating the adjustment of contact performance between the terminal and a pin of a central processing unit. <P>SOLUTION: This electric connector terminal structure is provided with: a main body part symmetrically installed in the central flat surface, and interfering with and fixed in the body of an electric connector; a tail part extended outside the electric connector body from one end of the main body part; and both arm parts extended in a direction far apart from the tail part from the other end of the main body part. Elastic arms are separately formed in ends of the arm parts, and a cavity for housing the pin of the central processing unit is formed between both the elastic arms. Both second side faces are formed in the extending direction of the arms in parallel with each other. The second side faces form a contained angle with the central flat surface, and the contained angle is formed larger than 0° and smaller than 90°. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a type of electric connector terminal, and more particularly to an electric connector terminal for electrically connecting a central processing unit and a circuit board.

[0002]

2. Description of the Prior Art Terminals for conventional electrical connectors are usually
It has both single-arm and dual-arm structures. The terminal generally has a main body portion that is engaged and accommodated in a main body (not shown) of the electrical connector, and a tail portion that extends outward of the electrical connector. The single arm structure is
Only one arm portion extends from one end portion of the main body portion in a direction away from the tail portion, and an elastic arm projects from the free end of the arm portion. The twin arm structure is formed by extending both arm portions from one end portion of the main body portion so as to face each other. For the conventional technique, refer to FIG. 1 (for example, Patent Document 1). The terminal 30 includes a main body portion 32, a tail 34 extending vertically from one end portion of the main body portion 32, and two parallel portions extending from the other end of the main body portion 32 in a direction away from the tail portion 34. It has two arms. The arm 3
An elastic arm 38 is projectingly provided at the end portion of 6, and the free end of the elastic arm 38 is a contact end 40, and a central processing unit pin (not shown) has entered between both elastic arms 38 with zero insertion force. After that, it is installed between both contact ends 40 and electrically connected to the contact ends 40.

However, this configuration has the following drawbacks. First, since the structure of the terminal 30 does not have a curved portion, it is difficult to adjust the gap between the contact ends 40 of the terminal 30 and it is also difficult to adjust the elastic force of the terminal 30.
For this reason, it becomes difficult to adjust the forward force of the contact between the terminal 30 and the central processing unit pin, and more excellent mechanical performance and electrical performance cannot be obtained for both. Second, between the elastic arms 38 of the terminal 30, it is necessary to provide a movable cavity within a predetermined range for the central processing unit pins, and the density of the central processing unit pins is further increased. Terminal 3 accommodated in the main body
Since the density of 0 also increases correspondingly and the gap between the adjacent terminals 30 becomes smaller, it is necessary to shorten the length of the elastic arm 38 in the terminal 30 of this configuration and the mechanical performance of the terminal 30. Is difficult to adjust.

[0004]

[Patent Document 1] US Pat. No. 4,498,725

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide an electric connector terminal in which the contact performance between the terminal and the central processing unit pin can be easily adjusted.

[0006]

SUMMARY OF THE INVENTION The present invention relates to an electrical connector terminal, the terminal structure of which is symmetrically provided on a center plane and which is fixed by interference in the body of the electrical connector. Part, a tail part that extends from one end of the main body part and extends to the outside of the main body of the electrical connector, and another end part of the main body part that extends in a direction away from the tail part. And an elastic arm formed separately at the distal end of the arm, and a cavity or gap for accommodating the pin of the central processing unit is provided between these two elastic arms. Has been formed. A second side surface parallel to the extending direction of the two arm portions is formed on each of the arm portions, and the two second side surfaces form a substantially “C” shape when viewed from the extending direction of the arm portions. As described above, the second side surfaces of the second side surface spread toward both sides of the center plane.
The side surface forms an included angle with the central plane, the included angle is set to be larger than 0 ° and smaller than 90 °, and the arm portion is extended at the included angle with the central plane to adjust the included angle. As a result, the mechanical performance of the terminal is optimized and the contact performance between the terminal and the central processing unit pin is improved.

[0007]

DETAILED DESCRIPTION OF THE INVENTION Please refer to FIGS. The terminal 100 (electrical connector terminal) is integrally formed by punching, and has a main body portion 102 that is interfered and fixed in a main body (not shown) of the electric connector, and extends from one end portion of the main body portion 102. Tail 106 and an arm portion 112 extending vertically from the other end of the main body portion 102 to both sides.
And are provided. The main body portion 102 includes wing portions 104 provided corresponding to upper and lower end portions on both sides, and an extension portion 110 protruding from an upper end portion of the main body portion 102. The arm portion 112 is formed on the extending portion 110 so as to extend in a direction away from the tail portion 106, corresponding to both sides thereof. The width of the wing portion 104 is formed wider than the width of other portions of the terminal 100 so that when the terminal 100 is housed in the main body of the electrical connector, it interferes with and contacts the terminal. The tail portion 10
6 includes a soldering piece 108 and a neck portion 109 connecting the soldering piece 108 and the main body portion 108. A soldering ball (not shown) is attached to the soldering piece 108, and the soldering ball is soldered onto a circuit board (not shown) through a surface mounting technique (SMT) to thereby form a terminal. 100 and the circuit board are electrically connected.

The both arm portions 112 are provided symmetrically with respect to a central plane P (as shown in FIGS. 3 and 5), and the central plane P divides the main body portion 102 and the tail portion 106. It is bisected. Further, the central plane P is
Among the side surfaces of the main body portion 102, they are orthogonal to the first side surface 1021 having a larger surface area. Two second side surfaces 1121 are provided in parallel to the direction in which each arm 112 extends. The plane of the second side surface 1121 has a main body 10
An intersection B (as shown in FIG. 5) is formed by intersecting the plane of the second first side surface 1021. The included angle is greater than 0 ° and 9
The included angle B in the present embodiment is smaller than 0 °.
Is 45 °. That is, the arm portion 112 is
It is stretched from both sides of the stretched portion 110 in a direction forming 45 ° with the main body 102, that is, in a direction forming 45 ° with the central plane P. Two upper arm portions 116 are provided by bending the ends of both arm portions inward, and the gap between the two upper arm portions 116 gradually decreases toward the tip side,
Elastic arms 114 are separately extended from both ends of these two upper arm portions 116, and the elastic arms 114 are connected to the upper arm portion 116 by the guide portion 1.
18 and both contact portions 120 installed so as to be parallel to the central plane P. The gap between the guides 118 gradually decreases toward the tip, and the pin (not shown) of the central processing unit is inserted into the cavity formed between the guides 118 by zero insertion force. And then the central plane P
Is inserted between both contact portions 120 in a V direction parallel to (as shown in FIGS. 2 and 4), and engaged with the contact portions 120 to be placed in an electrically conductive state.

In the technical method of the present invention, both sides of the terminal 100 are changed by changing the size of the included angle B formed between the second side surface 1121 of the arm 112 and the first side surface 1021 of the main body 102 in the manufacturing process. The gap of the elastic arm 114 can be adjusted, and the contact performance between the terminal 100 and the central processing unit pin can be optimized. The density of the terminals 100 increases, that is, the gap between adjacent terminals 100 decreases, and the included angle B is adjusted to ensure the movement amount of the central processing unit pin, thereby shortening the length of the elastic arm 114. There is no need to do it. Further, by changing the size of the bending angle of the upper arm portion 116 of the terminal 100, the gap between the elastic arms 114 can be adjusted, and the mechanical performance of the terminal 100 is optimized.

The above-described embodiments are merely better embodiments and are not intended to limit the scope of the present invention, and modifications of details which those who are familiar with the present invention can make based on the present invention. Alternately, all modifications are within the scope of the claims of the present invention.

[Brief description of drawings]

FIG. 1 is a perspective view of a conventional electric connector terminal.

FIG. 2 is a perspective view of an electric connector terminal of the present invention.

FIG. 3 is a front view of the electric connector terminal of the present invention.

FIG. 4 is a side view of the electric connector terminal of the present invention.

FIG. 5 is a top view of the electrical connector terminal of the present invention.

[Explanation of symbols]

100 ... Terminal 102 ... Main body 104 ... Wing 106 ... Tail part 108 ... Soldering piece 109 ... Neck 110 ... Stretching part 112 ... Arm part 118 ... upper arm 114 ... Elastic arm 116 ... Information section 120 ... Contact part 1021 ... First side 1121 ... Second side

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Minami Hayashi             No. 2 Free Street, Tucheng City, Taipei County, Taiwan F-term (reference) 5E024 CA15 CB02

Claims (7)

[Claims] 1. An electrical connector terminal used to electrically connect a central processing unit and a circuit board, the main body portion engaging within a main body of the electrical connector, and both sides from one end portion of the main body portion. And is provided symmetrically with respect to the center plane, and the surface area in the direction of extension forms an included angle with the second side surface and the included center plane, and each included angle is from 0 °. An electrical connector terminal comprising: two arm portions that are large and are formed smaller than 90 °. 2. A tail portion extending from the other end of the main body portion to the outside of the main body of the electric connector in a direction away from the arm portion. Electrical connector terminal. 3. The free end of each arm portion has an elastic arm including a guide portion and a contact portion, and a pin of the central processing unit is inserted into a cavity formed between the guide portions with zero insertion force. The electrical connector terminal according to claim 1, wherein the electrical connector terminal is configured to be placed in an electrically conductive state by being inserted and assembled between the both contact portions. 4. The electric connector terminal according to claim 3, wherein the gap between the two guide portions is formed to be gradually smaller. 5. The electric connector terminal according to claim 3, wherein the both contact portions are provided in parallel with each other. 6. The electrical connector terminal according to claim 1, wherein an included angle between the second side surface of the arm portion and the center plane is 45 °. 7. The electrical connector according to claim 1, wherein each of the upper end and the lower end of the main body portion is provided with a wing portion having a width larger than a width of another portion of the electrical connector terminal itself. Terminal.