CN201199556Y

CN201199556Y - Electric connector

Info

Publication number: CN201199556Y
Application number: CNU2008200079155U
Authority: CN
Inventors: 戴志刚
Original assignee: Lotes Guangzhou Co Ltd
Current assignee: Lotes Guangzhou Co Ltd
Priority date: 2007-12-20
Filing date: 2008-04-26
Publication date: 2009-02-25
Anticipated expiration: 2018-04-26

Abstract

The utility model relates to an electric connector, comprising an insulating body which is provided with a plurality of terminal-holding troughs and a plurality of conductive terminals which are respectively arranged in the terminal-holding troughs correspondingly; wherein, the conductive terminals are provided with at least one base part that is positioned in the terminal-holding troughs and form a welding part at the bottom end of the base part, the welding part is provided with a connection part extending from the bottom end of the base part, an elastic part extends from one side direction of the connection part, at least one side end of the elastic part forms an elastic supporting surface, and at least one side-direction bending section is formed between the connection part and the elastic part. In the electric connector, as the welding part is provided with one connection part extending from the bottom end of the base part, and one elastic part extends from one side-direction of the connection part, the elastic part ensures that the welding part has better side-direction elasticity relative to the circuit board, therefore, when the electric connector is welded on the circuit board, the welding part can effectively relieve the received side-direction external force, avoiding tin cracks.

Description

Electric connector

[technical field]

The utility model relates to a kind of electric connector.

[background technology]

No. 200620073486.2 Instructions Page 2 of related prior art such as Chinese patent, accompanying drawing 2, it has disclosed a kind of electric connector terminal, in order to connect chip module and printed circuit board (PCB), it comprises the holding parts that vertically extends, arm that extends from the upper end of holding parts and the weld part that extends from the holding parts lower end, and the neck between holding parts and weld part, wherein, neck is provided with a C shape zone, because this structure is extended setting along the vertical direction, so neck can not be alleviated the external force from side direction, after being installed on electric connector on the circuit board, the tin ball is melted, weld part is connected on the circuit board by the tin ball bonding, when weld part is subjected to the external force of side direction with respect to circuit board, because neck can not be alleviated the external force from side direction, make the tin ball of terminal and its side or the tin ball of printed circuit board side rupture easily, thereby influence the normal electric connection of electric connector.

Therefore be necessary to invent a kind of new electric connector, to overcome above-mentioned defective.

[summary of the invention]

The purpose of this utility model is to provide a kind of electric connector, and the weld part of its conducting terminal has preferable lateral elasticity with respect to circuit board, can avoid solder crack.

For achieving the above object, the utility model electric connector comprises: an insulating body offers a plurality of terminal containing slots on this insulating body; A plurality of conducting terminals, correspondence is located in the described terminal receipts groove respectively, this conducting terminal has a base portion at least and is positioned in this terminal receipts groove, and form a weld part in this base portion bottom, this weld part has a connecting portion that extends from this base portion bottom, and having extended laterally an elastic portion in this connecting portion one, at least one side of this elastic portion is formed with a resilient abutment face, and is formed with a side direction bending segment at least between this connecting portion and this elastic portion.

Compared with prior art, the utility model electric connector, because weld part has a connecting portion that extends from this base portion bottom, and extended laterally an elastic portion in this connecting portion one, elastic portion makes weld part have preferable lateral elasticity with respect to circuit board, when this electric connector was welded on the circuit board, weld part can effectively be alleviated suffered side direction external force, avoids solder crack.

[description of drawings]

Fig. 1 is the three-dimensional exploded view of the utility model electric connector;

Fig. 2 is the insulating body schematic perspective view of the utility model electric connector;

Fig. 3 is the conducting terminal schematic perspective view of the utility model electric connector;

Fig. 4 is the generalized section of the utility model electric connector;

Fig. 5 is the front view of the utility model electric connector.

[embodiment]

Below in conjunction with the drawings and specific embodiments the utility model electric connector is described further.

Please refer to Fig. 1, the utility model electric connector, in order to chip module (figure do not show) is electrically connected on the printed circuit board (PCB) (figure does not show), it comprises insulating body 10, be contained in the insulating body 10 a plurality of conducting terminals 20 and with conducting terminal 20 contacted tin balls 30.

Please refer to Fig. 2, insulating body 10 is rectangular shape, and it is provided with the first surface 11 of contiguous described chip module, contiguous described printed circuit board (PCB) and with first surface 11 parallel opposing second surface 12, and a plurality of terminal containing slots 13 that run through this two surface.Terminal containing slot 13 is provided with the first side wall 110, with the first side wall 110 parallel the 3rd relative sidewalls 111, and with the first side wall 110 and adjacent respectively second sidewall 112 and the 4th sidewall 113 of the 3rd sidewall 111, these sidewalls are provided with in the direction of the clock, wherein, the first side wall 110 is provided with a protuberance 114, the second sidewalls 112 at contiguous second surface 12 places and the 4th sidewall 113 respectively is being provided with holding slot 115 with the 3rd sidewall 111 intersections.Insulating body 10 convexes with a plurality of cross sections from second surface 12 to the direction away from first surface 11 and is trapezoidal projection 14 with location tin ball 30, these projection 14 adjacent terminal accepting grooves 13 are provided with, and face and this terminal containing slot 13 corresponding sidewall coplanes of its next-door neighbour's terminal containing slot 13, and aforementioned trapezoidal two bases 116 parallel to each other, 117 lay respectively on second sidewall 112 and the 4th sidewall 113 of the sub-accepting groove 13 of two abutting ends, the side 118 of this projection 14 is the inclined-plane, helps the importing of tin ball 30.

Please refer to Fig. 3 to Fig. 5, conducting terminal 20 is contained in the terminal containing slot 13, conducting terminal 20 comprise a base portion that takes the shape of the letter U 200 and certainly this base portion 200 bottoms that form with the weld part 201 printed circuit board (PCB) welding.Base portion 200 has the contact site that is arcuation 2001 that contacts with chip module, first holding parts 2003 that extends to form from the bending of contact site 2,001 one ends, second holding parts, 2002, the second holding parts, 2002 other ends that extend to form from the bending of contact site 2001 other ends connect weld part 201.Wherein, contact site 2001 is provided with the groove 2004 of a ccontaining chip module pin, first holding parts 2003 and second holding parts 2002 are oppositely arranged, and first holding parts, 2003 terminal both sides are respectively equipped with holding section 20030, the second holding parts 2002 and are provided with a stop section 20020.When conducting terminal 20 is assembled into insulating body 10, base portion 200 is arranged in the terminal containing slot 13, the first surface 11 of its contact site 2001 contiguous insulating bodies 10, second holding parts 2002 abuts on the first side wall 110, stop section 20020 blocks on it are in protuberance 114 1 sides, prevent that conducting terminal 20 is excessively mobile to second surface 12 directions of insulating body 10, first holding parts 2003 abuts on the 3rd sidewall 111, holding section 20030 on it is fastened in the holding slot 115, be fastened in holding slot 115 by stop section 20020 blocks in protuberance 114 and holding section 20030, thereby conducting terminal 20 is fixed on the insulating body 10.Weld part 201 stretches out the second surface 12 of insulating body 10, weld part 201 has the connecting portion 2010 that extends from second holding parts, 2002 bottoms, the side direction bending segment 2012 that the elastic portion 2011 that extends laterally from this connecting portion 2,010 one and this connecting portion 2010 and this elastic portion 1011 junctions form, this bending segment 2012 makes this connecting portion 2010 and this elastic portion 1011 in Different Plane, one side of this elastic portion 2011 contacts with tin ball 30 and forms abutment face 2013, this abutment face 2013 is parallel with second sidewall 112, this abutment face 2013 and two adjacent projection 14 one common peripheral coileds one receiving spaces 15.

Please refer to Fig. 5, described tin ball 30 is contained in the receiving space 15, each tin ball 30 corresponding two adjacent projection 14, these two projections, 14 adjacent inclined-planes are oppositely arranged, elastic portion 2011 and this two adjacent projection 14 of weld part 201 support tin ball 30 jointly, and elastic portion 2011 and two adjacent projections 14 contact with tin ball 30 and have formed first respectively, second, the 3rd contact point 119,120,121, these three contact point lines constitute triangle, so, tin ball 30 is by three-point fix and stable being immobilizated on the insulating body 10.

When electric connector is installed on the circuit board, tin ball 30 to be melted, tin ball 30 melts the back and forms block tin (figure does not show), weld part 201 is welded on the circuit board by block tin, because weld part 201 has a connecting portion 2010 that extends from base portion 200 bottoms, and extended laterally an elastic portion 2011 in this connecting portion 2,010 one, elastic portion 2011 makes weld part 201 have preferable lateral elasticity with respect to circuit board, when weld part 201 is subjected to the external force of side direction with respect to circuit board, weld part 201 can effectively be alleviated suffered side direction external force, avoids solder crack.Moreover, the elastic portion 2011 of weld part 201 and the projection 14 of insulating body 10 support fixedly tin ball 30 jointly on the second surface 12 of insulating body 10, weld part 201 has played the effect that flexibly supports tin ball 30 again, in the process of implanting tin ball 30, weld part 201 is subjected to tin ball 30 active forces along arrow A direction (as Fig. 5) strain to take place, weld part 201 becomes big with the receiving space that described two adjacent projections 14 form, such structure is with respect to complete structure by insulating body 10 fixing tin balls 30, the strain of weld part 201 has alleviated that tin ball 30 acts on the power of insulating body 10 in the process of implanting tin ball 30, and then reduces insulating body 10 mechanical stress in the horizontal direction.In addition, the abutment face 2013 of weld part 201 and two adjacent projection 14 one common peripheral coileds one receiving spaces 15, tin ball 30 is contained in this receiving space 15, in this electric connector is welded on process on the circuit board, because weld part 201 can weld, and projection 14 is refused weldering, and 30 meetings of tin ball contact with the 30 nothing interference of tin ball thereby form insulating body 10 to weld part 201 motions that can weld; Weld part 201 stretches out the second surface 12 of insulating body 10 again, and weld part 201 can not pullled because of the vibration or the distortion of insulating body 10, thereby can avoid being vibrated or being out of shape the solder crack that causes because of insulating body 10.

In sum, the utility model electric connector, the weld part of its conducting terminal has preferable lateral elasticity with respect to circuit board, can avoid solder crack; And in the process of implanting the tin ball, can reduce insulating body mechanical stress in the horizontal direction; And can avoid being vibrated or being out of shape the solder crack that causes because of insulating body.

Claims

1. an electric connector is characterized in that, comprising:

One insulating body offers a plurality of terminal containing slots on this insulating body;

A plurality of conducting terminals, correspondence is located in the described terminal receipts groove respectively, this conducting terminal has a base portion at least and is positioned in this terminal receipts groove, and form a weld part in this base portion bottom, this weld part has a connecting portion that extends from this base portion bottom, and having extended laterally an elastic portion in this connecting portion one, at least one side of this elastic portion is formed with a resilient abutment face, and is formed with a side direction bending segment at least between this connecting portion and this elastic portion.

2. electric connector as claimed in claim 1 is characterized in that: described insulating body bottom be to should the terminal containing slot adjacent domain being provided with at least two location divisions, and this resilient abutment face just with described two location division one common peripheral coiled one receiving spaces.

3. electric connector as claimed in claim 2 is characterized in that: described electric connector further comprises the tin ball, and this tin ball is contained in the described receiving space.

4. electric connector as claimed in claim 3 is characterized in that: described elastic portion and described two location divisions contact respectively with the tin ball and have formed three contact points, and these three contact point lines constitute triangle.

5. electric connector as claimed in claim 1, it is characterized in that: described base portion takes the shape of the letter U, it has a curved contact site, first holding parts that extends to form from the bending of contact site one end and second holding parts that extends to form from the bending of the contact site other end, and this second holding parts other end connects the connecting portion of described weld part.

6. electric connector as claimed in claim 5 is characterized in that: the terminal both sides of described first holding parts are respectively equipped with the holding section, and described insulating body is to being provided with holding slot in the holding section.

7. electric connector as claimed in claim 5 is characterized in that: described second holding parts is provided with a stop section, and described insulating body is to being provided with protuberance in the stop section.