CN2840352Y

CN2840352Y - Card edge connector

Info

Publication number: CN2840352Y
Application number: CNU2005200694803U
Authority: CN
Inventors: 杨祥启; 李仁志
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: 2005-03-04
Filing date: 2005-03-04
Publication date: 2006-11-22
Anticipated expiration: 2015-03-04

Abstract

The utility model discloses a card edge connector which comprises a body and a plurality of first and second terminals, wherein the first and the second terminals are accommodated and fixed in the body. The body is provided with an inserted groove and a fitting surface, wherein the inserted groove is inserted with an electronic card and the fitting surface abuts on a circuit board when the card edge connector is fixed to the circuit board. The first and the second terminals all comprise body parts, fixing parts which extend from the body parts, welding parts and contact parts and the contact parts are all provided with cantilevers which can spring and contact points. The extension direction of the cantilevers of the first terminals is corresponding to the insertion direction of the electronic card, the extension direction of the cantilevers of the second terminals is the same as the insertion direction of the electronic card and the cantilevers can surround a supporting point to generate springing when the tail ends of the cantilevers are under stress. The contact points of the first and the second terminals are respectively and convexly exposed at both sides of the inserted groove, and the tail ends of the cantilevers of the second terminals are provided with stress points which are corresponding to the fitting surface when the electronic card is withdrawn. Because the supporting points of the cantilevers of the second terminals are higher than the stress points of the second terminals when the electronic card is withdrawn, the card edge connector can prevent the problem that the terminals generate rotation and damage by following the withdrawing of the electronic card owing to the improper operation when the electronic card is withdrawn.

Description

Bayonet connector

[technical field]

The utility model is relevant a kind of electric connector, refers to a kind of bayonet connector of the electronic cards that is used to peg graft especially.

[background technology]

Bayonet connector is widely used in the electronic equipment, is used for realizing electronic cards and electric connection between the circuit board of bayonet connector is installed.As United States Patent (USP) the 5th, 393, promptly disclosed a kind of bayonet connector No. 234, this bayonet connector comprises body with inserting groove and the plurality of conductive terminals that is contained in insulating body.The inserting groove of body is in order to accommodating the butt end of electronic cards, the contact site of conducting terminal be arranged in the longitudinal trough with the butt end of electronic cards on golden finger electrically connect.Conducting terminal comprises protruding last conducting terminal and the protruding following conducting terminal that is exposed to the inserting groove lower edge that is exposed to the inserting groove upper limb, and the contact site of conducting terminal is that the electronic cards plug surface extends from its main part by the body rear forward end all up and down.Because of electronic cards is to be tilted to down the inserting groove that inserts bayonet connector, following conducting terminal contact site is protruding expose inserting groove and its bearing of trend relative with the electronic cards direction of insertion, if deviation appears in the direction of insertion of electronic cards or insertion force is excessive, conducting terminal is damaged because of the effect of improper insertion force under all can causing.

In order to address the above problem, it is consistent with the direction of insertion of electronic cards the following conducting terminal of bayonet connector can be designed to bearing of trend, a kind of bayonet connector that is disclosed for No. 316721 as the Taiwan patent announcement, conducting terminal contact site bearing of trend is consistent with the electronic cards direction of insertion really down for it, thereby the impaired problem of terminal when efficiently solving the electronic cards insertion, when but electronic cards withdraws from heeling condition, the frictional force maximum that the end of following conducting terminal contacts with electronic cards, when the electronic cards edge when inserting groove is outwards extracted, electronic cards is easy to make down conducting terminal to cause terminal to damage with the direction rotation of extracting of electronic cards to the drive of conducting terminal end.Even the conducting terminal end is imbedded in the body, also can be damaged because plastic cement body intensity is more weak.

[utility model content]

The purpose of this utility model is to provide a kind of bayonet connector, its terminal elasticity better and its can prevent to damage when electronic cards from inserting or extracting conducting terminal.

For achieving the above object, the utility model adopts following technical scheme: a kind of bayonet connector comprises body and accommodates and is immobilizated in intrinsic some first, second terminal, when body has the slot of grafting electronic cards and bayonet connector is fixed in circuit board near the installed surface of circuit board, first, second terminal includes main part, the holding parts that autonomous body extends, weld part and contact site, and but contact site all has springing cantilever and contact, the first terminal cantilever bearing of trend is relative with the electronic cards direction of insertion, the second terminal cantilever bearing of trend is consistent with the electronic cards direction of insertion, and cantilever can produce springing around a fulcrum when cantilevered distal end was stressed, first, the protruding respectively slot both sides that are exposed to of second terminal contact, the second terminal cantilevered distal end had a stress point when electronic cards withdrawed from, with respect to installed surface, the stress point of the fulcrum of the second terminal cantilever is higher than electronic cards when withdrawing from second terminal.

Compared with prior art, the utility model bayonet connector has following beneficial effect: by improving the terminal structure of bayonet connector, the height of the relative terminal cantilever of terminal stress point fulcrum when the reduction electronic cards withdraws from, when preventing that electronic cards from withdrawing from,, improper operation produces rotation even damage with withdrawing from of electronic cards owing to making terminal.

The utility model will be further described in conjunction with embodiment with reference to the accompanying drawings.

[description of drawings]

Fig. 1 is the stereogram of the utility model bayonet connector.

Fig. 2 is the exploded view of the utility model bayonet connector.

Fig. 3 is the cutaway view of the utility model bayonet connector along A-A direction shown in Figure 1.

Fig. 4 is the cutaway view of the utility model bayonet connector along B-B direction shown in Figure 1.

Bayonet connector second terminal cantilever force analysis chart when Fig. 5 withdraws from for electronic cards.

[embodiment]

See also Figure 1 and Figure 2, the utility model bayonet connector 100 comprises body 10, some the first terminals 20, some second terminals 30, shows that for ease of clear Fig. 1 and Fig. 2 only illustrate the minority terminal.

Body 10 comprises lengthwise mold base 11 and is located at the button gripping arm 12 at matrix 11 two ends.The longitudinally that extends side in matrix 11 button gripping arms is provided with a slot 111, in order to the grafting electronic cards, matrix 11 has the front end face 13 of slot 111 1 sides, relative rear end face 14, and when being fixed in this bayonet connector on the circuit board near the bottom surface installed surface of circuit board.As shown in Figure 3, Figure 4, the upper and lower side of slot 111 is respectively equipped with the terminal accommodating passage 117,118 of accommodating first,

second terminal

20,30 of fixing, and terminal accommodating passage 117,118 runs through rear end face 14, the front end face 13 of matrix 11 respectively.The upper limb of this slot 111 is formed with first inclined plane 112 and first horizontal plane 113 from outside to inside, lower edge then ecto-entad is formed with second horizontal plane 114 and second inclined plane 115, these slot 111 inner terminals are formed with a vertical plane 116, wherein first horizontal plane 113 and second horizontal plane, 114 almost parallels, and first inclined plane 112 of upper limb and the inclined plane 115 of lower edge can constitute the sloping portion of slot 111.

As shown in Figure 3, the first terminal 20 is formed by the punching press of metal lamellar body, be immobilizated in the terminal accommodating passage 117 of matrix 11 first holding parts 22, first weld part 23 and first contact site 24 that it comprises the first upright main part 21, protrudes out from first main part 21 from the assembling of matrix 11 rear end faces 14.Wherein first holding parts 22 has and the protruding thorn 221 of the interference of terminal accommodating passage 117 inwall interference engagement, is retained in the matrix 11 so that the first terminal 20 is stablized.First weld part 23 protrudes out matrix 11 rear end faces 14 backward, can be welded on the circuit board (figure does not show), to realize that the first terminal 20 is fixed together with circuit board with the electric connection of circuit board and with body 10 and terminal 20, and the following solder side of relative first weld part 23 of the root edge of first main part 21 is raised certain distance, can prevent to a certain extent that solder shorts and scolding tin from climbing.First contact site 24 upwards extends forward from first main part 21, form first cantilever 241, cantilevered distal end is for protruding into first contact 242 of slot 111, first horizontal plane 113 is protruded in first contact 242, and realizes good electric connection with the electronic cards of inserting slot 111 by the elasticity that first cantilever 241 provides.The redundance that the first terminal 20 is assembled into the terminal material belt that fractures behind the matrix 11 forms strip connecting portion 211, and this strip connecting portion 211 protrudes matrixes 11 rear end faces 14.

As shown in Figure 4, second terminal 30 is formed by the punching press of metal lamellar body, be immobilizated in the terminal accommodating passage 118 of matrix 11 second holding parts 32, second weld part 33 and second contact site 34 that it comprises second main part 31, protrudes out from second main part 31 from the assembling of matrix 11 front end faces 13.Wherein second holding parts 32 has and the protruding thorn 321 of the interference of terminal accommodating passage 118 inwall interference engagement, so that being stablized, second terminal 30 is retained in the matrix 11, this second holding parts 32 also is provided with stopper section 322 upwards simultaneously, this stopper section 322 abuts against terminal accommodating passage 118 inwalls, the location of second terminal 30 and prevent the rotation of second terminal 30 when realizing assembling.Second weld part 33 protrudes out forward outside the matrix 11, can be welded on the circuit board (figure does not show), to realize that second terminal 30 is fixed together with circuit board with the electric connection of circuit board and with body 10 and terminal 30, and the following solder side of relative second weld part 33 of the root edge of second main part 31 is raised certain distance, can prevent to a certain extent that solder shorts and scolding tin from climbing.Second contact site 34 is inclined upwardly forward from second main part, 31 middle parts to extend and extends back, the connecting portion 340 and second cantilever 341 that comprise end face 13 inclinations forward, cantilever and connecting portion angle make contact site 34 promptly keep certain elasticity frangibility not again greater than 60 degree and less than 90 degree.Second cantilever 341 has second contact 342 of the slot of protruding into 111, and in 342 places, second contact bendings, and it is terminal 343 that cantilever is divided into pars intermedia and contact, and pars intermedia and the ratio that contacts end 343 are less than 3.The root of inclination connecting portion 340 is concordant substantially with second holding parts, 32 upper limbs near a side of second holding parts 32, thereby can prevent that second terminal 30 from interfering is assembled in matrix 11 when interior, and the second stressed contact site 34 is fractureed.The angle α angle of the connecting portion 340 and second holding parts is between 110 °～130 °, in this execution mode, the angle of angle α is 120 °, connecting portion 340 protrudes out to matrix 11 front end faces 13 but does not exceed matrix 11 front end faces 13, and second horizontal plane 115 is protruded in second contact 342, and the elasticity that provides by second cantilever 341 realizes the good electric connection with the electronic cards of inserting slot 111, the incline direction of contact tail end 343 is consistent with the incline direction on second inclined plane 114, is higher than second inclined plane 114 and promptly contacts tail end 343 and exceed associated socket 111 matrixes 10 but contact tail end 343.In addition, connecting portion 340 is higher than the least significant end B point that contacts tail end 343 with the highest point A point of second cantilever, 341 junctions, and when second cantilever 341 produced springing, the A point was the fulcrum of second cantilever 341.In addition, the redundance that second terminal 30 is assembled into the terminal material belt that fractures behind the matrix 11 forms strip connecting portion 311, and it protrudes in the front end face 13 of matrix 11.

When electronic cards has the edge tilt insertion slot 111 of conducting strip, the contact tail end 343 that first inclined plane 112 of slot 111 upper limbs and second terminal 30 tilt plays certain guide function, can make the electronic cards edge insert slot 111 smoothly, and the bearing of trend because of second terminal, 30 contact sites that are positioned at slot 111 bottoms is consistent with the direction of insertion of electronic cards, then the insertion force that electronic cards produced that tilts to insert can not damaged second terminal 30, and the stopper section 322 near terminal accommodating passage 118 inwalls can prevent to a certain extent that second terminal 30 from producing rotation along direction of insertion simultaneously.In addition, the contact tail end 343 that second terminal 30 tilts exceeds slot 111 lower edges second inclined plane 114, and the scraping to slot 111 lower edge matrixes 11 in the time of can avoiding electronic cards to insert is worn and torn.

Electronic cards is inserted the back rotation that puts in place and is pressed to and reset after horizontal level is detained gripping arm 12 outer opening simultaneously, thereby with the electronic cards fixing and realize being welded on electrically conducting of bayonet connector 100 and electronic cards on the circuit board.When electronic cards withdraws from, remove the lock solid structure (not indicating) of button gripping arm 12, then electronic cards is because of first,

second terminal

20,30 elasticity by springing to heeling condition, when outwards withdrawing under the effect of electronic cards in external force, the contact tail end 343 stressed maximums of second terminal 30, and the B point becomes main stress point, but the fulcrum A point when producing springing because of second cantilever 341 is higher than the B point, even then second terminal 30 also can prevent that under the effect of improper external force second cantilever 341 of second terminal 30 from producing along the electronic cards exit axis is clockwise rotation even damage.

Below in conjunction with Fig. 5, the stressing conditions of second cantilever 341 when electronic cards withdraws to second terminal 30 analyzed, the direction that withdraws from because of electronic cards is certain substantially, suppose that the active force that electronic cards is ordered to second terminal, 30 contact sites, 34 stress point B is F, and the direction of F is consistent with the direction that card withdraws from, the fulcrum A of second cantilever 341 fixes, then F is at the component F1 of the vertical direction of AB line (F1=F * Sinb, wherein the angle of the direction of F and AB line is b) be that can to drive second cantilever 341 be the power that fulcrum is rotated with A, if and the terminal cantilever is shorter, terminal stress point B ' point is concordant with fulcrum A, its can drive this cantilever with A be the component F1 ' that is rotated of fulcrum (F1 '=F * Sinb ', wherein the angle of the direction of F and AB ' line is b ', and b is less than b ') with big what F1, even the installed surface with bayonet connector is a benchmark, stress point B point is low more with respect to fulcrum A point, the component F1 that then drives 341 rotations of second cantilever is more little, the possibility that second cantilever 341 of second terminal 30 produces rotation is also low more, so compared to the prior art bayonet connector second terminal stress point situation concordant or higher with the cantilever fulcrum, the utility model can suppress second terminal to a certain extent and produce spinning even damage with the electronic cards exit axis under abominable operating environment.

Certainly, the end of second terminal, 30 second cantilevers 341 of the present utility model can be imbedded in the matrix 11, when simultaneously electronic cards withdraws from stress point B o'clock of second terminal close to second contact 342, but satisfy simultaneously as if being benchmark with the installed surface, stress point is than the low condition of fulcrum A of second cantilever 341.

Claims

1. bayonet connector, it comprises body and accommodates and is immobilizated in intrinsic some first, second terminal, when body has the slot of grafting electronic cards and bayonet connector is fixed in circuit board near the installed surface of circuit board, first, second terminal includes main part, the holding parts that autonomous body extends, weld part and contact site, and but contact site all has springing cantilever and contact, the first terminal cantilever bearing of trend is relative with the electronic cards direction of insertion, the second terminal cantilever bearing of trend is consistent with the electronic cards direction of insertion, and cantilever can produce springing around a fulcrum when cantilevered distal end was stressed, first, the protruding respectively slot both sides that are exposed to of second terminal contact, the second terminal cantilevered distal end had a stress point when electronic cards withdrawed from, it is characterized in that: with respect to installed surface, the stress point of second terminal was higher than the fulcrum of the second terminal cantilever when electronic cards withdrawed from.

2. bayonet connector as claimed in claim 1 is characterized in that: second terminal further comprises the connecting portion that autonomous body extends, and this connecting portion links to each other with the second terminal cantilever, and the junction forms the springing fulcrum of the second terminal cantilever.

3. bayonet connector as claimed in claim 2 is characterized in that: the connecting portion of second terminal is concordant substantially with the holding parts upper limb from its main part diagonally extending and its side near holding parts, and the angle of this connecting portion and holding parts is between 110 °～130 °.

4. bayonet connector as claimed in claim 1, it is characterized in that: the upper limb of body slot is formed with first inclined plane and first horizontal plane from outside to inside, lower edge then ecto-entad is formed with second horizontal plane and second inclined plane, wherein first horizontal plane and the second horizontal plane almost parallel, and the inclined plane of first inclined plane of upper limb and lower edge can constitute the sloping portion of slot.

5. bayonet connector as claimed in claim 4, it is characterized in that: the contact of first, second terminal is protruded first and second horizontal plane respectively, the incline direction of the contact tail end of the second termination contact portion is consistent with the incline direction on second inclined plane, and is higher than second inclined plane.

6. bayonet connector as claimed in claim 1, it is characterized in that: body has the front end face of slot one side and relative rear end face, body also is provided with the terminal accommodating passage of accommodating first, second terminal, and the terminal accommodating passage of accommodating the first terminal runs through the body rear end face, and the terminal accommodating passage of accommodating second terminal runs through the body front end face.

7. bayonet connector as claimed in claim 6, it is characterized in that: first, second terminal has the formed strip connecting portion of terminal material belt that fractures behind the body of being assembled in respectively, and the strip connecting portion of first, second terminal protrudes from the rear end face and the front end face of body respectively.

8. bayonet connector as claimed in claim 1, it is characterized in that: the holding parts of second terminal also is provided with stopper section upwards, and this stopper section abuts against on the terminal accommodating vias inner walls and the following solder side of the relative weld part of root edge of first and second terminal body is raised certain distance.

9. bayonet connector as claimed in claim 3 is characterized in that: the angle of described connecting portion and holding parts is 120 °.