CN2579029Y

CN2579029Y - Anti-electrostatic electric connector

Info

Publication number: CN2579029Y
Application number: CN 02249603
Authority: CN
Inventors: 王依仁; 谌崇国
Original assignee: Foxlink Electronics Dongguan Co Ltd; Cheng Uei Precision Industry Co Ltd
Current assignee: Foxlink Electronics Dongguan Co Ltd; Cheng Uei Precision Industry Co Ltd
Priority date: 2002-11-15
Filing date: 2002-11-15
Publication date: 2003-10-08
Anticipated expiration: 2012-11-15

Abstract

The utility model discloses an electrostatic prevention electric connector, which can enable static charges accumulated at the periphery of a transmission terminal to be connected with a metallic shielding body to be guided and earthed via a selective conducting electronic component (such as a diode, a transistor, etc.); when the electric current passing through the terminal is greater than a default value, the electronic component conducts redundant charges to the metallic shielding body to be earthed through the electronic component so that electronic signals of the transmission terminal can not be interfered by a voltage surging pulse, the static charges or other external noise to maintain the integrity and the correctness of transmission signals.

Description

The antistatic electric connector

Affiliated technical field

The utility model relates to a kind of electric connector of eliminating electrostatic interference, thereby but is meant that especially the assembly that can avoid surging pulse, electrostatic charge and noise jamming that terminal is kept on the correctness of electronic signal and the protective circuit can be because of occurring the electric connector that excessive voltage or electric current are damaged suddenly when transmission signals.

Background technology

Existing electric connector is generally by insulating body, compositions such as metallic shield body and plurality of terminals, wherein this metallic shield body cover overlays on the insulating body outside, avoid the electromagnetic field of connector outside or electromagnetic noise that the signal of telecommunication that terminal transmitted is produced interference by the metallic shield effect, to guarantee the correctness of transmission signals, as Taiwan patent application No. 89201909 and No. 89218235 respectively at April 11 calendar year 2001 and October 11 calendar year 2001 bulletin, and respectively at the United States Patent (USP) of announcing in July 17 nineteen ninety and on December 1st, 1998 the 4th, 941, No. 849 and the 5th, 842, No. 885 etc., the insulating body outside of the connector that it disclosed all adds the metallic shield body.

But, these metallic shield bodies only can prevent that the electromagnetic field of connector outside or electromagnetic noise from exerting an influence to the signal of telecommunication that terminal transmits, generate an electromagnetic field around the connector inside especially terminal or during build up of electrostatic charge, or big electric current is arranged when the terminal suddenly, the electrostatic charge that these metallic shield bodies shortage elimination electromagnetic interference, eliminating are gathered or the mechanism of big electric current, thereby the signal of telecommunication that terminal is transmitted makes a mistake because of being subjected to noise jamming, even makes the interlock circuit assembly that is connected with terminal cause damage.

The utility model content

In order to overcome the defective that above-mentioned prior art exists; the utility model provides a kind of antistatic electric connector; this electric connector not only can effectively be eliminated and accumulate in bonder terminal electrostatic charge on every side, and the interlock circuit assembly that protection is connected with terminal is not damaged, and unitary construction is firm.

The technical scheme that its technical problem that solves the utility model adopts is: its metallic shield body is connected with the electronic unit (as diode, transistor etc.) of terminal with the selectivity conducting; but this electronic unit conducting under particular state; for example when have suddenly on the terminal big electric current by or when having a large amount of electric charges to gather; can make this electronic unit conducting; this super-high-current or a large amount of charge-conduction ground connection to the metallic shield body is got rid of; so can protect the interlock circuit assembly that is connected with terminal not to be damaged, and can keep the correctness of transmission signal.In addition, metallic shield body one end of the present utility model also has elasticity, has the effect of fixed cable, and when this metallic shield body combined with this connector insulating body, its elastic reaction has certain retain strength can prevent that the metallic shield body from sliding.

The beneficial effects of the utility model are; effectively eliminate accumulating in bonder terminal electrostatic charge on every side, prevent electromagnetic interference, the assembly on the protective circuit can not damaged because of occurring excessive voltage suddenly; guarantee that signal of telecommunication transmission is correct, and the whole fixing of connector is firm.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the stereogram of the utility model antistatic electric connector.

Fig. 2 is that the utility model antistatic electric connector is in conjunction with cable and the stereogram after removing shield.

Fig. 3 is the exploded view of the utility model antistatic electric connector.

Fig. 4 is the rearview of the utility model antistatic electric connector.

Fig. 5 is the printed board circuit allocation plan of the utility model antistatic electric connector.

Among the figure, 1. electric connector, 10. insulating body, 11. pedestal, 12. base portions, 14. butt joint draw-in grooves, 16. the grounding elastic part opening, 18. tongue-like parts, 20. afterbodys, 22. the afterbody side, 24. circuit board fixation wall, 26. circuit board holddown grooves, 30. printed circuit board (PCB), 32. terminal pads, 34. cable welding holes, 36. the elastic arm pad, 38. selectivity conducting electronic units, 42. terminal docking sections, 44. the terminal weld part, 50. tongue-like part terminal conduits, 52. terminal through-hole, 60. the metallic shield body, shield on 62., 64. times shields, 70. elastic arm, 72. elastic arm tops, 74. elastic arm connecting portions, 76. elastic arm bottom, 78. cables, on 80. the shield top, 82. last shield side, 84. times shield bottoms, 86. times shield sides, 88. grounding elastic part, 90. last shield cramp, 92. times shield buckle projections, 94. times shield block button holes, 96. last shield block button hole, 98. base portion buckle projections.

Embodiment

See also Fig. 1 to Fig. 3, the utility model electric connector 1 includes a long strip type insulating body 10, metallic shield body 60 and plurality of terminals.Wherein, this long strip type insulating body 10 comprises at least one pedestal, in the present embodiment two pedestals separated by a distance 11, this pedestal 11 includes base portion 12, tongue-like part 18 and afterbody 20, wherein base portion 12 and tongue-like part 18 form an annular room that has respective shapes with butt connector (figure does not show), base portion 12 outside both sides relatively are provided with base portion buckle projection 98, and base portion 12 inner both sides relatively have and the corresponding butt joint draw-in groove 14 of butt connector (figure does not show), base portion 12 bottoms have for grounding elastic part 88 stretches into the interior grounding elastic part opening 16 of room, but the ground connection signal on these grounding elastic part 88 conducting butt connectors, tongue-like part 18 offers the terminal conduit 50 that stretches into for terminal docking section 42, but this terminal docking section 42 has elasticity and emersion tongue-like part face in terminal conduit 50, and stable being connected can be reached with the utility model connector terminals docking section 42 in corresponding terminal docking section when making butt connector insert in the annular room.

Base portion 12 goes out to be lower than the afterbody 20 of base portion height to the insulating body rear extension, afterbody 20 has two upright afterbody sides 22 of opposing parallel, have two relative and parallel circuit board fixation wall 24 between this two afterbodys side 22, this circuit board fixation wall 24 facing each other forms two circuit board holddown grooves 26 that are parallel to each other of inserting for printed circuit board (PCB) 30, terminal through-hole 52 is to connect to extend to afterbody 20 from corresponding tongue-like part terminal conduit 50 to form, and terminal weld part 44 stretches out and solid welding corresponding terminal pad 32 on printed circuit board (PCB) 30 to afterbody 20 from base portion 12 rears by terminal through-hole 52.

Metallic shield body 60 comprises shield 62 and following shield 64, wherein descend shield 64 to have a bottom 84, and extend two parallel following shield sides 86 vertically upward by 84 relative both sides, bottom, this time shield 64 covers the bottom and the left and right sides of base portion 12 from lower to upper, following shield bottom 84 also is provided with two grounding elastic parts that slightly pop up 88, this grounding elastic part 88 can be stretched to the annular room of pedestal 11 by the grounding elastic part opening 16 of base portion 12 bottoms, this time shield side 86 is provided with buckle projection 92 and block button hole 94, buckle projection 94 matches with the buckle projection 98 of base portion 12 both sides external, make down shield be retained on base portion 12 bottoms and the left and right sides, 92 of following shield buckle projections match with last shield block button hole 96, make shield 62 be retained on the outside of base portion 12 and afterbody 20, in addition, last shield 62 has a top 80, these 80 relative both sides, top are extended two parallel relative sides 82 vertically downward, make shield 62 can cover the top and the left and right sides face of base portion 12 and afterbody 20, block button hole 96 is located on the shield side 86, last shield side 82 and block button hole 96 opposing ends and side 82 are vertical and extend two cramps 90 with relative direction, the terminal bottom of last shield cramp 90 butt afterbodys 20, can strengthen going up shield 62 at the retain strength of base portion 12 with afterbody 20 outsides, cable 78 solid weldings set relative cable welding hole 34 on printed circuit board (PCB) 30 is with the normal signal on this transmission connector terminal.

See also Fig. 4 again, elastic arm 70 is by top 72, connecting portion 74 is formed with bottom 76, its material is for can conduct electricity and the flexible metal of tool, the top 72 of this elastic arm 70 lays respectively at connecting portion 74 two ends and parallel relative with bottom 76, the elastic arm pad 36 of elastic arm bottom 76 solid weldings on printed circuit board (PCB) 30,72 at elastic arm top forms with last shield 62 and contacts conducting, with this electric charge on metallic shield body is directed to earthed circuit, that to be elastic arm top 72 should go up shield top 80 than metallic shield body 60 and insulating body 10 combination backs to the length of elastic arm bottom 76 to the preferred forms of this elastic arm 70 is slightly long to the distance of printed circuit board (PCB) 30, so can make elastic arm 70 form to stablize with last shield 62 by the strain that makes up back elastic arm 70 and contact.

See also Fig. 5 again; printed circuit board (PCB) 30 is provided with terminal pad 32; cable welding hole 34; elastic arm pad 36; selectivity conducting electronic unit 38 and relevant circuit layout (not label); the signal input end of selectivity conducting electronic unit 38 and terminal pad 32 are connected by relevant circuit layout; the earth terminal of electronic unit 38 and the conducting of earthed circuit (not shown); 36 of elastic arm pads pass through printed circuit ground connection; this excessive voltage or electric current will make this selectivity conducting electronic unit 38 break through its critical voltage and be conducting state when abnormal signal occurring on the bonder terminal; excessive voltage or current signal can be directed to the earthed circuit eliminating by this electronic unit 38 on the terminal at this moment, protects other circuit unit and guarantees that signal is correct.

Claims

1. antistatic electric connector, it comprises terminal and at least one shield of an insulating body, some transmission of electric signals, offer plurality of terminals in this insulating body and accommodate conduit to accommodate aforementioned respective terminal in wherein, these terminals have elasticity docking section and weld part, this shield cover is put in this insulating body outside, it is characterized in that: but this electric connector also comprises the electronic unit of at least one conducting under particular state, this electronic unit and terminal weld part electrically connect, and also have earth terminal on the electronic unit, this earth terminal and shield are electrical connected.

2. antistatic electric connector as claimed in claim 1 is characterized in that: described electronic unit is a diode.

3. antistatic electric connector as claimed in claim 1 is characterized in that: described electronic unit is being conducting state when the voltage on the terminal of its electric connection surpasses the critical voltage of this electronic unit.

4. antistatic electric connector as claimed in claim 1 is characterized in that: described electronic unit and terminal weld part are to electrically connect by a printed circuit board (PCB).

5. antistatic electric connector as claimed in claim 1 is characterized in that: described electronic unit earth terminal and shield are to electrically connect by a printed circuit board (PCB).

6. antistatic electric connector as claimed in claim 5 is characterized in that: described printed circuit board (PCB) and shield are to electrically connect by the elastic arm conflict shield of solid welding on printed circuit board (PCB).

7. antistatic electric connector as claimed in claim 1 is characterized in that: described shield is the metallic shield body.

8. antistatic electric connector as claimed in claim 1 is characterized in that: described shield comprises that shield reaches shield down, and it covers top, bottom and the left and right side of insulating body jointly.

9. antistatic electric connector as claimed in claim 1 is characterized in that: described insulating body is provided with the grounding elastic part opening, and described shield is provided with grounding elastic part, and this grounding elastic part stretches in the insulating body by the grounding elastic part opening.

10. antistatic electric connector as claimed in claim 1 is characterized in that: described shield has the fastener that can be fixed on the insulating body.