CN110416789B

CN110416789B - Electrical connector with improved contact arrangement

Info

Publication number: CN110416789B
Application number: CN201810390178.XA
Authority: CN
Inventors: 许硕修
Original assignee: Fudin Precision Component Shenzhen Co ltd; Foxconn Interconnect Technology Ltd
Current assignee: Fudin Precision Component Shenzhen Co ltd; Foxconn Interconnect Technology Ltd
Priority date: 2018-04-27
Filing date: 2018-04-27
Publication date: 2022-07-26
Anticipated expiration: 2038-04-27
Also published as: TW201946334A; CN110416789A; TWI804611B

Abstract

The invention discloses an electric connector which is used for being installed on a circuit board to electrically connect a chip module, the electric connector comprises an insulating body with a plurality of terminal holes and a plurality of conductive terminals which are correspondingly accommodated in the terminal holes one by one, the insulating body is provided with an upper surface and a lower surface which are opposite, the terminal holes penetrate through the upper surface and the lower surface, the conductive terminals comprise butt joint arms which are used for being contacted with the chip module and welding arms which are used for being welded to the circuit board and are arranged in a vertically extending way, the butt joint arms comprise a first main body part which is fixedly arranged in the terminal holes and elastic arms which are bent upwards from the first main body part and extend out of the upper surface, the butt joint arms and the welding arms are mutually independent and arranged at intervals, the elastic arms move to downwards press the welding arms when the chip module is pressed down so as to form electric conduction, therefore, the current path between the chip module and the circuit board is shortened, and the high-frequency performance of the electric connector is improved.

Description

Electrical connector

[ technical field ] A

The present invention relates to an electrical connector, and more particularly, to an electrical connector for electrically connecting a circuit board and a chip module.

[ background ] A method for producing a semiconductor device

Chinese utility model patent No. CN206283019U discloses an electrical connector for mounting to a circuit board to electrically connect a chip module, it includes an insulation body and a conductive terminal fixed on the insulation body, the conductive terminal includes a fixed part fixed on the insulation body, an elastic arm bending upwards from the fixed part and extending out of the upper surface of the insulation body, and a welding part extending downwards from the fixed part and welding with the circuit board, when the chip module presses down the elastic arm, the conductive terminal forms electric conduction between the chip module and the circuit board, because the requirement for the transmission speed of high-frequency signals of the electric connector is continuously increased at present, and the elastic arm of the conductive terminal has to be arranged into a bent long arm shape due to the abutting requirement, the current path of the terminal is overlong, so that the high-frequency characteristic of the terminal is influenced, and the transmission speed of the terminal is limited.

Therefore, there is a need for a new electrical connector to overcome the above-mentioned drawbacks.

[ summary of the invention ]

The invention aims to provide an electric connector which can improve the high-frequency characteristic of a terminal and improve the transmission speed of the terminal.

The purpose of the invention is realized by the following technical scheme: an electric connector is used for being installed on a circuit board to electrically connect a chip module, and comprises an insulating body with a plurality of terminal holes and a plurality of conductive terminals which are accommodated in the terminal holes in a one-to-one correspondence manner, the insulation body is provided with an upper surface and a lower surface which are opposite, the terminal hole penetrates through the upper surface and the lower surface, the conductive terminal comprises a butt joint arm used for being contacted with the chip module and a welding arm which is used for being welded to the circuit board and extends up and down, the butt joint arm comprises a first main body part fixedly held in the terminal hole and an elastic arm bent upwards from the first main body part and extending out of the upper surface, the butt joint arm and the welding arm are independent from each other and arranged at intervals, and the elastic arm moves when the chip module is pressed down and downwards abuts against the welding arm to form electric conduction.

Furthermore, the soldering arm comprises a second main body part extending vertically and fixed in the terminal hole, a bending part extending from the second main body part in an upward inclined manner, and a ball planting part extending from the second main body part downwards to the lower surface of the insulating body, wherein the bending part is positioned below the elastic arm, the elastic arm moves downwards and abuts against the bending part, and the ball planting part is soldered to the circuit board through a solder ball.

Further, the elastic arm comprises a bending part which is bent and extended from the upper end of the first main body part towards the direction of the welding arm, an inclined part which is bent and extended from the bending part and inclined upwards, and an arc-shaped contact part which is bent and extended from the inclined part.

Further, the bent portion extends obliquely in a direction away from the docking arm.

Further, when the elastic arm presses against the bending portion, the bending portion of the elastic arm is further bent due to the pressing, and the inclined portion of the elastic arm slides along the bending portion to provide a supporting force.

Further, the elastic arm presses against the bending part to form a substantially vertically extending conductive path between the chip module and the circuit board.

Further, first main part with the second main part is parallel to each other and fixes respectively at the relative internal face that corresponds the terminal hole, first main part includes to both sides extend and be used for the holding extremely the first barb in terminal hole, the second main part includes to both sides extend and be used for the holding extremely the second barb in terminal hole.

Further, the terminal hole is equipped with first draw-in groove and second draw-in groove of interval arrangement in a lengthwise direction, the definition have with lengthwise direction vertically horizontal direction, first draw-in groove distribute in the horizontal opposite sides of internal face just aligns the setting in lengthwise direction, the second draw-in groove distribute in the horizontal opposite sides of internal face just aligns the setting in lengthwise direction, first barb with first draw-in groove interference fit is in order to incite somebody to action the butt joint arm equipment extremely insulator, the second barb with second draw-in groove interference fit is in order to incite somebody to action the weld arm equipment extremely insulator.

Further, each first barb with the mid portion interval of first main part has a first gap, each the second barb with the mid portion interval of second main part has a second gap, the opening in first, second gap just follows up the upper and lower direction is extended.

Furthermore, the upper surface of the insulating body is provided with a boss protruding upwards, the elastic arm protrudes upwards out of the boss, and the bending part is positioned between the upper surface and the boss.

Compared with the prior art, the invention has the following beneficial effects: when the conductive terminals of the electric connector are butted, the elastic arms of the conductive terminals are elastically butted with the vertically arranged welding arms, so that the current path of the conductive terminals is favorably shortened, the high-frequency characteristic of the terminals is improved, and the transmission speed of the terminals is improved.

[ description of the drawings ]

Fig. 1 is a perspective view of the electrical connector of the present invention.

Fig. 2 is a perspective view of the electrical connector of fig. 1 from another angle.

Fig. 3 is a partially exploded view of the electrical connector shown in fig. 1.

Fig. 4 is another angled, partially exploded view of the electrical connector of fig. 3.

Fig. 5 is a perspective view of the conductive terminal shown in fig. 3.

Fig. 6 is a sectional view taken along line a-a of fig. 1.

Fig. 7 is a cross-sectional view of the electrical connector of fig. 1 taken along line a-a when the conductive terminals are under compression.

Fig. 8 is a sectional view taken along line B-B in fig. 1.

Fig. 9 is a sectional view taken along line C-C in fig. 1.

[ description of main element symbols ]

First barb 2101 of electrical connector 100

First slit 2102 of insulating body 1

Terminal hole 10 elastic arm 211

The bent portion 2111 of the first card slot 101

The inclined portion 2112 of the second card slot 102

Upper surface 11 contact portion 2113

Boss 110 weld arm 22

Lower surface 12 second body portion 220

Conductive terminal 2 second barb 2201

Second slot 2202 of chip module 200

Contact piece 201 bend 221

The ball-planting part 222 of the butt joint arm 21

The first main body 210 is solder ball 3

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

[ detailed description ] A

Hereinafter, an embodiment of the electrical connector of the present invention will be described with reference to fig. 1 to 9.

As shown in fig. 1 to 7, the electrical connector 100 includes an insulating body 1 having a plurality of terminal holes 10 and a plurality of conductive terminals 2 accommodated in the terminal holes 10 in a one-to-one correspondence manner. The insulating body 1 has an upper surface 11 and a lower surface 12 opposite to each other, and the terminal hole 10 penetrates through the upper and

lower surfaces

11, 12. The conductive terminal 2 includes a butt-joint arm 21 for contacting the chip module 200 and a welding arm 22 for welding to the circuit board and extending vertically, the butt-joint arm 21 includes a first main body portion 210 fixed in the terminal hole 10 and an elastic arm 211 bending upwards from the first main body portion 210 and extending out of the upper surface 11, the butt-joint arm 21 and the welding arm 22 are independent and spaced from each other, the elastic arm 211 moves when the chip module 200 is pressed down and presses the welding arm 22 downwards to form electrical conduction. The soldering arm 22 includes a second main body 220 extending up and down and fixed in the terminal hole 10, a bending portion 221 extending from the second main body 220 in an upward inclined manner, and a ball-implanting portion 222 extending from the second main body 220 to the lower surface 12 of the insulating housing 1, wherein the bending portion 221 is located below the elastic arm 211, the elastic arm 211 moves down to abut against the bending portion 221, and the ball-implanting portion 222 is soldered to the circuit board by a solder ball 3. As can be seen from fig. 6 and 7, in the present embodiment, the bending portion 221 protrudes from the upper surface 11, and the ball implanting portion 222 protrudes from the lower surface 12.

As shown in fig. 3 to 7, the elastic arm 211 includes a bent portion 2111 bent and extended from an upper end of the first body portion 210 toward the welding arm 22, an inclined portion 2112 inclined and extended upward from the bent portion 2111, and an arc-shaped contact portion 2113 bent and extended from the inclined portion 2112. One surface of the chip module 200 facing the electrical connector 100 is provided with a contact sheet 201 for connecting with the contact portion 2113, and the elastic arm 211 extends in the shape of a long arm bent as described above, so that the elastic arm 211 has better elasticity, and when the docking arm 21 contacts the chip module 200, the elastic arm 211 can keep good electrical contact with the contact sheet 201.

Referring to fig. 5 to 7, the bent portion 221 extends obliquely away from the docking arm 21. When the elastic arm 211 presses the bending portion 221, the bending portion 2111 of the elastic arm 211 is further bent due to the pressing, and the inclined portion 2112 of the elastic arm 211 slides along the bending portion 221 to provide a supporting force, so that the bending portion 2111 is prevented from being excessively deformed due to the pressing, the conductive terminal 2 is prevented from losing elasticity, and the service life of the conductive terminal 2 can be prolonged. In this embodiment, the upper surface 11 of the insulating housing 1 has a boss 110 protruding upward, the elastic arm 211 protrudes upward from the boss 110, and the curved portion 221 is located between the upper surface 11 and the boss 110, so that the electrical connector 100 and the chip module 200 are in full contact to achieve stable electrical conduction. Chip module 200 supports downwards and presses behind electric connector 100, elastic arm 211 because of the atress warp and with welding arm 22 electric contact, until chip module 200 touches boss 110 of insulator 1 and stop deforming, setting up of boss 110 set up to elastic arm 211's deformation provides sufficient space of stepping down, but should step down the space and be in again elastic arm 211's can kick-back within range, is favorable to further avoiding elastic arm 211 is because of being supported and pressed excessive deformation.

Referring to fig. 7, when the conductive terminals 2 of the electrical connector 100 are mated, the elastic arms 211 thereof elastically abut against the upper ends of the vertically arranged soldering arms 22, and the ball-implanting portions 222 at the lower ends of the soldering arms 22 are directly soldered to the circuit board, i.e. the elastic arms 211 press against the bending portions 221 to form a substantially vertically extending conductive path between the chip module 200 and the circuit board. Compared with the conventional elastic terminal which can only transmit current through the bent long-arm elastic arm, the conductive terminal 2 of the present invention can shorten the current path between the chip module 200 and the circuit board to a certain extent, improve the high-frequency characteristics of the conductive terminal 2, increase the transmission speed of the conductive terminal 2, and improve the high-frequency performance of the electrical connector 100.

As shown in fig. 3 to 9, the first main body portion 210 of the docking arm 21 and the second main body portion 220 of the soldering arm 22 are parallel to each other and vertically extend up and down, the first main body portion 210 and the second main body portion 220 are respectively fixed on opposite inner wall surfaces (not labeled) of the corresponding terminal hole 10, the first main body portion 210 includes first barbs 2101 extending towards two sides and used for being fixed to the terminal hole 10, and the second main body portion 220 includes second barbs 2201 extending towards two sides and used for being fixed to the terminal hole 10. Terminal hole 10 is equipped with first draw-in groove 101 and the second draw-in groove 102 of interval arrangement in a lengthwise direction, the definition have with the vertical transverse direction of lengthwise direction, first draw-in groove 101 distribute in the horizontal opposite sides of internal face just aligns the setting in the lengthwise direction, second draw-in groove 102 distribute in the horizontal opposite sides of internal face just aligns the setting in the lengthwise direction, first barb 2101 with first draw-in groove 101 interference fit with butt joint arm 21 equipment to insulator 1, second barb 2201 with second draw-in groove 102 interference fit with weld arm 22 equipment to insulator 1. The first body portion 210 and the second body portion 220 of the conductive terminal 2 of the present invention are vertically disposed, so as to shorten the width of the conductive terminal 2 in the longitudinal direction, which is beneficial to miniaturizing the electrical connector 100.

In this embodiment, a first slit 2102 is formed between each of the first barbs 2101 and a middle portion (not labeled) of the first main body portion 210, a second slit 2202 is formed between each of the second barbs 2201 and a middle portion (not labeled) of the second main body portion 220, openings of the first and

second slits

2102, 2202 face upward and extend along the up-down direction, and the first and

second slits

2102, 2202 are configured to enable the first and

second barbs

2101, 2201 to have a certain elasticity in the transverse direction, which is beneficial for the docking arm 21 and the welding arm 22 to be more firmly held in the first and

second card slots

101, 102.

The butt joint arm 21 and the soldering arm 22 of the electrical connector 100 of the present invention are independently arranged, only the soldering arm 22 is soldered to the circuit board through the solder ball 3, and the butt joint arm 21 mainly provides elasticity for the butt joint of the electrical connector 100 and the chip module 200, so that the conductive terminal 2 is stably contacted with the contact sheet 201 of the chip module 200, and meanwhile, the butt joint arm 21 is abutted against the soldering arm 22 which is approximately vertically extended up and down to form an approximately vertically extended conductive path in the conductive terminal 2, which can improve the high frequency characteristic of the conductive terminal 2 and increase the transmission speed of the conductive terminal 2. The independent docking arm 21 and welding arm 22 will not affect each other in the use function, and the design can be more flexible.

The above description is only a partial embodiment of the present invention, and not all embodiments, and any equivalent variations of the technical solutions of the present invention, which are adopted by those skilled in the art through reading the present specification, are covered by the claims of the present invention.

Claims

1. The utility model provides an electric connector for install to a circuit board with an electric connection chip module, electric connector including have a plurality of terminal hole insulator and a plurality of one-to-one accept in conductive terminal in the terminal hole, insulator has relative upper surface and lower surface, the terminal hole runs through upper and lower surface, conductive terminal including be used for with the butt joint arm of chip module contact and be used for the welding to the circuit board just is the welding arm of upper and lower extension setting, the butt joint arm including the holding in first main part in the terminal hole and from first main part upwards buckle extend out the elastic arm of upper surface, the welding arm includes the second main part of vertical extension from top to bottom and certainly the flexion that the second main part tilt up extended, its characterized in that: the butt joint arm and the welding arm are independent from each other and arranged at intervals, the elastic arm moves when the chip module is pressed down and is pressed against the bending part of the welding arm downwards, the elastic arm slides downwards along the bending part until the elastic arm is close to the second main body part to form electric conduction, and the elastic arm is pressed against the bending part to form a conducting path extending approximately vertically between the chip module and the circuit board.

2. The electrical connector of claim 1, wherein: the welding arm comprises a ball planting part which extends downwards from the second main body part to the lower surface of the insulating body, the bending part is positioned below the elastic arm, and the ball planting part is welded to the circuit board through a solder ball.

3. The electrical connector of claim 2, wherein: the elastic arm comprises a bending part bent and extended from the upper end of the first main body part towards the welding arm, an inclined part inclined and extended upwards from the bending part, and an arc-shaped contact part bent and extended from the inclined part.

4. The electrical connector of claim 3, wherein: the bent portion extends obliquely in a direction away from the docking arm.

5. The electrical connector of claim 4, wherein: when the elastic arm presses against the bending part, the bending part of the elastic arm is further bent due to the pressing, and the inclined part of the elastic arm slides along the bending part to provide supporting force.

6. The electrical connector of claim 3, wherein: the first main part with the second main part is parallel to each other and fixes respectively at the relative internal face that corresponds the terminal hole, first main part is including extending to both sides and being used for the holding extremely the first barb in terminal hole, the second main part is including extending to both sides and being used for the holding extremely the second barb in terminal hole.

7. The electrical connector of claim 6, wherein: the terminal hole is equipped with interval arrangement's first draw-in groove and second draw-in groove in a lengthwise direction, the definition have with lengthwise direction vertically horizontal direction, first draw-in groove distribute in the horizontal relative both sides of internal face and align the setting in lengthwise direction, the second draw-in groove distribute in the horizontal relative both sides of internal face and align the setting in lengthwise direction, first barb with first draw-in groove interference fit with the butt joint arm equipment extremely insulator, the second barb with second draw-in groove interference fit is in order to incite somebody to action the welding arm equipment extremely insulator.

8. The electrical connector of claim 7, wherein: each first barb with the intermediate part interval of first main part has a first gap, each the second barb with the intermediate part interval of second main part has a second gap, the opening in first, second gap just follows up the upper and lower direction extends.

9. The electrical connector of any of claims 1-8, wherein: the upper surface of the insulating body is provided with a boss which protrudes upwards, the elastic arm protrudes upwards to extend out of the boss, and the bending part is positioned between the upper surface and the boss.