CN101740922A

CN101740922A - Conductive terminal

Info

Publication number: CN101740922A
Application number: CN200810305741A
Authority: CN
Inventors: 钱正清; 廖启男; 廖本扬
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2008-11-26
Filing date: 2008-11-26
Publication date: 2010-06-16

Abstract

The invention discloses a conductive terminal which can electrically connect a chip module and a circuit board and comprises a main body, a head part, a welding part and a pair of terminal arms, wherein the head part upwards extends from the main body; the welding part downwards bends and extends from the main body and is matched with the circuit board; and the pair of terminal arms extends from two opposite side edges. Each terminal arm comprises a contact arm; and a gilded oblique angle which can contact the chip module is arranged at the top of the contact arm. The oblique angle can improve the conductive performance and the conductive terminal and the reliability of the electric connection.

Description

Conducting terminal

[technical field]

The present invention relates to a kind of conducting terminal, relate in particular to a kind of conducting terminal that chip module is electrically connected to printed circuit board (PCB).

[background technology]

A kind of existing conducting terminal is mainly used in and electrically connects chip module to circuit board, and it comprises main body, the upwardly extending head of autonomous agent, protrude a pair of holding parts that extends in the main body lower end, bend downwards from the middle part of holding parts and extend the weld part that matches with circuit board and extend the pair of terminal arm of setting in the relative both side edges bending of main body.Wherein, each terminal arm contact arm of comprising adjutage that the autonomous agent lateral margin extends downwards, extending upward the elastic arm that is used to seize on both sides by the arms chip module, extend and expand outwardly to main direction in the elastic arm terminal horizontal in the adjutage end.

Existing conducting terminal has following shortcoming at least: conducting terminal is the part more than the holding parts of conducting terminal to be electroplated after stamping out the conducting terminal blank earlier again, but this electro-plating method is also electroplated the outside and zone, elastic arm front side that contact arm does not contact with chip module, so wasted more plated material.Another kind of mode is before the conducting terminal punch forming, by the choosing plating elastic arm of conducting terminal and the inboard and the contacted zone of chip module of contact arm are electroplated, though play the effect of saving plated material, but the last end face of contact arm after the moulding is not plated to gold because be die-cut, in the long-term process of using, the oxidation and rusting phenomenon appears in the zone that is not plated to gold, and should go up the medial surface of end face, thereby influence the electric connection between conducting terminal and the chip module easily near contact arm.

Therefore, necessary existing conducting terminal is improved to overcome the defective of prior art.

[summary of the invention]

The object of the present invention is to provide a kind of effective and contacted conducting terminal of chip module.

Conducting terminal of the present invention is achieved through the following technical solutions: a kind of conducting terminal, can electrically connect chip module to circuit board, it comprises: main body, the upwardly extending head of autonomous agent, autonomous agent bend downwards and extend the weld part that matches with circuit board and the pair of terminal arm of the relative both side edges extension of autonomous agent, each terminal arm comprises contact arm, and described contact arm top is provided with and the contacted gold-plated oblique angle of chip module.

Compared to prior art, the oblique angle is passed through in the inboard of conducting terminal contact arm of the present invention, can be with die-cut above the contact arm away from its zone that contacts with chip module, the conduction property of conducting terminal and the reliability of electric connection be can improve, thereby conducting terminal and the firm electric connection of chip module realized.

[description of drawings]

Fig. 1 is the stereogram of conducting terminal of the present invention.

Fig. 2 is the front elevational view of conducting terminal of the present invention.

Fig. 3 is the front elevational view that the end pin of chip module inserts conducting terminal of the present invention.

[embodiment]

Conducting terminal 1 of the present invention is mainly used in and electrically connects chip module (not shown) to circuit board (not shown), as depicted in figs. 1 and 2, this conducting terminal 1 comprises main body 10, autonomous agent 10 upwardly extending heads 11, protrudes a pair of holding parts 15 that extends in main body 10 lower ends, bends downwards from the middle part of holding parts 15 and extend the weld part 12 that matches with circuit board (not shown) and in the pair of terminal arm 13 of main body 10 relative both side edges bending extension settings.Wherein, chip module (not shown) bottom is provided with and conducting terminal 1 contacted end pin 2.

Wherein, the contact arm 14 that each terminal arm 13 comprises adjutage 131 that autonomous agent 10 lateral margins extend downwards, extends upward the elastic arm 132 of the end pin 2 that is used to seize on both sides by the arms chip module (not shown), extends and expand outwardly to main body 10 directions in elastic arm 132 terminal horizontal in adjutage 131 ends, wherein, each comprises oblique angle 141 and upper surface 140 to contact arm 14.

Chip module (not shown) is placed the top of conducting terminal 1 and chip module (not shown) is applied external force, the end pin 2 of chip module (not shown) is between described a pair of contact arm 14, elastic arm 132 and adjutage 131 can produce strain makes end pin 2 insert between the described contact arm 14 and with contact arm 14 with zero insertion force and cooperatively interact to expand outwardly, thereby realizes conducting terminal 1 and chip module (not shown) and the firm electric connection of circuit board (not shown).

The manufacturing process of conducting terminal 1 of the present invention be after conducting terminal 1 punching press before the bending forming with surface plating one deck nickel (Ni) of the mode of copper material strip by choosing plating corresponding region of corresponding terminal arm 13 upper ends and contact arm 14 inboards on conducting terminal 1, form nickel coating, owing between nickel and the gold stronger affinity is arranged, on nickel coating, further plate one deck gold (Au) again, form Gold plated Layer.Obtain the embryo of conducting terminal 1 afterwards again by die-cut mode.Embryo with conducting terminal 1 is bent to form three-dimensional conducting terminal 1 then, because the upper surface 140 of the contact arm 14 of conducting terminal 1 is not plated to nickel coating and Gold plated Layer for die-cut, copper material is in naked state, upper surface 140 can get rusty because of oxidation in the long-term process of using, and influences the electric connection between the end pin 2 of conducting terminal 1 and chip module (not shown).Therefore after stamping out conducting terminal 1 blank, before being bent into stereo structure conducting terminal 1, die casting being carried out in the inboard, top of the contact arm 14 of conducting terminal 1 obtain oblique angle 141, this oblique angle 141 can also be set to fillet, and 141 surfaces, oblique angle are comparatively level and smooth.Thereby the area that exposes the upper surface 140 of copper material can be dwindled and away from its zone that contacts with the end pin 2 of chip module (not shown).Under the situation that the end pin 2 of chip module (not shown) slightly tilts when inserting, also can reach excellent electrical property with the surface at oblique angle 141 and contact, thereby electrically connect reliably between the end pin 2 of assurance conducting terminal 1 and chip module (not shown).

The end pin 2 contacted zones of the terminal arm 13 of conducting terminal 1 of the present invention and the relative both sides of contact arm 14 and chip module (not shown) are coated with nickel coating and Gold plated Layer, obtain conducting terminal 1 by punching press again, contact arm 14 die casting to conducting terminal 1 at last go out oblique angle 141, the conducting terminal 1 and end pin 2 contact areas of chip module (not shown) are increased, and away from the upper surface 140 of the dew copper of conducting terminal 1, thereby improve the conduction property of conducting terminal 1 and the reliability of electric connection, can save electroplating cost more.

Claims

1. conducting terminal, can electrically connect chip module to circuit board, it comprises: main body, the upwardly extending head of autonomous agent, autonomous agent bend downwards and extend the weld part that matches with circuit board and the pair of terminal arm of the relative both side edges extension of autonomous agent, it is characterized in that: each terminal arm comprises contact arm, and described contact arm top is provided with and the contacted gold-plated oblique angle of chip module.

2. conducting terminal as claimed in claim 1 is characterized in that: described each terminal arm comprises adjutage that the autonomous agent lateral margin extends, the contact arm that extends and expand outwardly to main direction in the terminal upwardly extending elastic arm of adjutage, in the elastic arm end.

3. conducting terminal as claimed in claim 2 is characterized in that: described each contact arm is provided with upper surface, the zone that described inclined-plane makes upper surface contact with chip module away from conducting terminal.

4. conducting terminal as claimed in claim 3, it is characterized in that: after the described conducting terminal punching press before the bending forming, mode on the corresponding terminal arm and the surface of the corresponding region of contact arm inboard plating one deck nickel on conducting terminal by the choosing plating forms nickel coating, further plates one deck gold again and form Gold plated Layer on nickel coating.

5. conducting terminal as claimed in claim 4 is characterized in that: obtain the embryo of conducting terminal by die-cut mode, the embryo with conducting terminal is bent to form three-dimensional conducting terminal then.

6. conducting terminal as claimed in claim 5 is characterized in that: the inboard, top of described contact arm to conducting terminal is carried out die casting and is obtained described oblique angle, and described inclination surface is comparatively level and smooth.