CN201230118Y - Electric connector - Google Patents

Abstract

An electrical connector is used to connect chip modules, which includes a base on a circuit board, a number of conductive terminals accommodated in the base, a frame combined with the base and a bottom plate installed on the lower bottom of the circuit board. The conductive terminal is provided with a contact portion for connecting the chip module. The contact portion includes a main body and a pair of bent portions that are bent and extended from both sides of the main body. , the crimping portion and the protruding portion support the solder balls of the chip module from the bottom. The conductive terminal of the electric connector of the utility model can stably contact with the chip module.

Description

electrical connector

【Technical field】

The utility model relates to an electric connector, in particular to an electric connector capable of electrically connecting a chip module to a circuit board.

【technical background】

An existing electrical connector is used for connecting a chip module to the electrical connector. The electrical connector includes a base and conductive terminals accommodated in the base. The conductive terminal includes an elastic portion in a bent structure, a contact portion extending from the upper end of the elastic portion, a clamping portion formed by bending the lower end of the elastic portion, and a holding portion vertically extending downward from the clamping portion. When the chip module is in contact with the conductive terminal, the contact portion of the conductive terminal abuts against the solder ball at the bottom of the chip module. Since the contact portion of the conductive terminal has a sheet-like structure, it may slip from the bottom of the solder ball during the abutment process and contact with the solder ball. The sidewalls of the terminal holes are clamped and cannot abut against the solder balls well, thereby affecting the electrical connection of the electrical connector.

Therefore, it is indeed necessary to improve the existing electrical connectors to overcome the aforementioned defects of the prior art.

【Content of utility model】

The purpose of the utility model is to provide an electrical connector that can stably abut against a chip module.

The purpose of this utility model is achieved through the following technical solutions: an electrical connector for connecting chip modules, which includes: a base body containing a plurality of conductive terminals and a plurality of conductive terminals, and a plurality of conductive terminals are provided. A contact portion, the contact portion includes a main body and a bending portion bent and extended from both sides of the main body, a pair of crimping portions are provided on both sides of the top end of the main body, and each of the two bending portions is provided with The protruding part, the crimping part and the protruding part support the chip module from the bottom.

Compared with the prior art, the electric connector of the present utility model has the following beneficial effects: the crimping part and the protruding part of the conductive terminal of the electric connector of the present utility model can hold up the solder ball from the bottom of the solder ball of the chip module, thereby ensuring The conductive terminal can be in stable contact with the chip module.

【Description of drawings】

FIG. 1 is a three-dimensional assembled view of the electrical connector of the present invention.

FIG. 2 is a cross-sectional view of the electrical connector of the present invention along the direction II-II in FIG. 1 .

FIG. 3 is a three-dimensional exploded view of the electrical connector of the present invention.

FIG. 4 is a perspective view of a conductive terminal of the electrical connector of the present invention.

FIG. 5 is a partially enlarged view of FIG. 2 .

【Detailed ways】

Please refer to Fig. 1 to Fig. 4, the electrical connector of the present invention is used to connect the chip module 33, which includes a substrate 2 on the circuit board 1, a number of conductive terminals 4 accommodated in the substrate 2, combined with the substrate 2 to The frame body 3 together and the bottom plate 5 installed on the lower bottom surface of the circuit board 1 .

Please refer to FIG. 1 and FIG. 2 , the substrate 2 is horizontally disposed on the circuit board 1 , and includes a main body 20 , a positioning plate 21 , a clamping plate 22 and a holding plate 23 . The main body 20 defines a receiving cavity 200 , positioning posts 201 are respectively provided at two opposite corners of the receiving cavity 200 , and screw holes 202 penetrating through the main body 20 are respectively provided at four corners of the main body 20 . The positioning plate 21 is accommodated in the housing cavity 200 of the main body 20, the splint 22 is also accommodated in the housing cavity 200 of the main body 20 and is located below the positioning plate 21, and the holding plate 23 is installed on the main body 20 from the bottom surface of the main body 20, and is located in the housing cavity. 200 below. The positioning plate 21 and the splint 22 are fixed on the main body 20 by means of bolts (not shown) and accommodated in the receiving cavity 200, and the holding plate 23 is also assembled on the bottom of the main body 20 by means of bolts (not shown), located below the receiving cavity 200, Wherein, the positioning plate 21 , the clamping plate 22 and the holding plate 23 are all provided with corresponding terminal holes (not shown).

Please refer to FIG. 1 and FIG. 2 , the frame body 3 is erected above the main body 20 , and an accommodating space 32 is formed therein for accommodating a chip module 33 . The bottom of the chip module 33 is provided with solder balls 331 , please continue to refer to FIG. 5 , four corners of the frame body 3 are respectively provided with through holes 31 penetrating through the frame body 3 . A bottom plate 5 is mounted on the bottom of the circuit board 1 facing the substrate 2 . The electrical connector is stably fixed on the circuit board 1 through bolts (not shown) sequentially passing through the through hole 31 of the frame body 3 , the screw hole 202 of the base body 2 , the through hole 10 of the circuit board 1 and the bottom plate 5 .

Please refer to FIG. 4 and FIG. 5 , the conductive terminal 4 is provided with an elastic portion 43 in a bent structure, and the elastic portion 43 includes an upper arm 431 , a lower arm 432 and an arc-shaped connecting portion 433 connecting the upper arm 431 and the lower arm 432 , wherein the width of the upper arm 431 and the lower arm 432 gradually narrows in a direction away from the connecting portion 433 . The conductive terminal 4 forms a retaining portion 42 at the end of the upper arm 431 of the elastic portion 43 , and the retaining portion 42 extends toward opposite sides thereof and then bends upward to form a pair of blocking buckles 421 . The front end of the holding part 42 is bent upward to form an upper shoulder 411 with an increased width, and the upper shoulder 411 further extends vertically upward to form a contact part 41. A pair of bending parts 413 are folded and extended, and the top of the bending part 413 protrudes upwards from a protruding part 414. A pair of crimping parts 412 are provided on both sides of the top end of the main body part 410. The crimping part 412 and the protruding part 414 form a The apex of the conductive terminal 4 supports the solder ball 331 of the chip module 33 from the bottom. The conductive terminal 4 is bent downwards from the end of the lower arm 432 to extend out of the clamping portion 44 , and a pair of wing portions 441 are simultaneously extended from the clamping portion 44 to two opposite sides thereof. The retaining portion 45 extends vertically downward from the clamping portion 44 , and a lower shoulder 451 with an enlarged width is formed on the upper portion of the retaining portion 45 . The holding portion 45 is accommodated in a terminal hole (not shown) of the holding plate 23 to enhance the holding effect of the conductive terminal 4 in the base body 2 .

When assembling, the positioning plate 21 and the splint 22 are first placed in the receiving cavity 200 of the main body 20 and fixed on the main body 20 by eight bolts (not shown), and then the partly assembled main body 20 is turned upside down, and the conductive terminals 4 correspond to each other. Insert it into the terminal hole (not marked) of the positioning plate 21 and the terminal hole (not marked) of the splint 22, and then install the holding plate 23 from the bottom surface of the main body 20 through four bolts (not shown) on the main body 20 to make the conductive The holding portion 45 of the terminal 4 cooperates with the terminal hole (not shown) of the holding plate 23 to fix the conductive terminal 4 to the base 2 to form a module.

Please refer to Fig. 4, the conductive terminal 4 of the electrical connector is accommodated in the receiving cavity 200 of the main body 20, the upper part of the receiving cavity 200 of the main body 20 is assembled with a positioning plate 21 and a clamping plate 22, and the lower part is fixed with a holding plate 23, the conductive terminal 4 pierced through the positioning plate 21 , the clamping plate 22 and the holding plate 23 . The crimping portion 412 and the protruding portion 414 of the contact portion 41 of the conductive terminal 4 are received in the terminal hole (not marked) of the positioning plate 21, and the upper shoulder 411 of the conductive terminal 4 is received in the terminal hole (not marked) of the positioning plate 21 ) and the terminal hole (not marked) of the splint 22. The blocking buckle 421 of the holding part 42 of the conductive terminal 4 elastically contacts the lower bottom surface of the splint 22, the wing part 441 of the clamping part 44 touches the upper top surface of the terminal hole (not marked) of the holding plate 23, and the lower surface of the conductive terminal 4 The shoulder 451 is located in the terminal hole (not shown) of the holding plate 23, the holding portion 45 extends out of the terminal hole (not shown) of the holding plate 23, and contacts the adjacently installed circuit board 1, and the elastic portion 43 is accommodated in the main body 20 There is a reserved space in the receiving chamber 200 , which is located between the clamping plate 22 and the holding plate 23 .

Please refer to FIG. 5, when the chip module 33 is installed on the electrical connector and pressed down, the solder balls 331 at the bottom of the chip module 33 are accommodated in the terminal holes (not marked) of the positioning plate 21 and are in contact with the conductive terminals 4. Contact, wherein the four vertices formed by the crimping portion 412 and the protruding portion 414 of the conductive terminal 4 lift the solder ball 331 upward from the bottom of the solder ball 331, thereby preventing the solder ball 331 from falling off from the four vertices, that is, The stable electrical connection between the circuit board 1 and the chip module 33 is increased, thereby ensuring the normal operation of the electrical connector.

Claims (8)

1. [claim 1] a kind of electric connector is used to connect chip module, and it comprises: contain the matrix and the plurality of conductive terminals of plurality of conductive terminals, conducting terminal is provided with the contact site that is used to connect chip module; It is characterized in that: described contact site comprises the kink that the dual-side bending of main part and autonomous body is extended, the both sides, top of described main part are provided with a pair of pressure contact portion, described two kinks respectively are provided with the convex extension part, and hold chip module described pressure contact portion and convex extension part from the bottom.
2. [claim 2] electric connector as claimed in claim 1 is characterized in that: described conducting terminal further comprises elastic portion, and described elastic portion comprises upper arm, underarm and connects the connecting portion of upper arm, underarm.
3. [claim 3] electric connector as claimed in claim 2 is characterized in that: described matrix is provided with host cavity and is contained in host cavity interior clamping plate and holding board, the space of the elastic portion of described conducting terminal between host cavity inner splint and holding board.
4. [claim 4] electric connector as claimed in claim 3 is characterized in that: the terminal maintaining part that forms of described upper arm, and described maintaining part is bent to form and stops button, and this stops the button resilient abutment in the clamping plate lower surface, and can be away from clamping plate when chip module presses down.
5. [claim 5] electric connector as claimed in claim 4 is characterized in that: described maintaining part upwards broadens after its relative dual-side stretches again is bent to form the described button that stops.
6. [claim 6] electric connector as claimed in claim 5 is characterized in that: described maintaining part front end upwards bending also extends to form described contact site straight up.
7. [claim 7] electric connector as claimed in claim 6 is characterized in that: the pressure contact portion of described contact site and convex extension part form the summit of conducting terminal.
8. [claim 8] electric connector as claimed in claim 2 is characterized in that: the holding section is extended in the terminal bending downwards of described underarm, and alar part is extended simultaneously to its relative both sides in the holding section, and the holding section is extended holding parts straight down.

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