CN100372181C

CN100372181C - Electronic card connector

Info

Publication number: CN100372181C
Application number: CNB031434436A
Authority: CN
Inventors: 张家祯
Original assignee: Molex LLC
Current assignee: Molex LLC
Priority date: 2003-09-25
Filing date: 2003-09-25
Publication date: 2008-02-27
Anticipated expiration: 2023-09-25
Also published as: CN1601812A

Abstract

The present invention relates to an electronic card connector which comprises a base body and insulating main bodies of a left side arm and a right side arm, wherein an inserting space is formed between the base body and the two side arms; conductive terminals are arranged on the base body at intervals. One terminal which is arranged on the insulating main bodies is provided with an elastic arm, a contact part and a convex body, wherein the contact part is connected to the free end of the elastic arm, and the convex body is formed on the contact part; the other terminal which is arranged on the insulating main bodies is provided with a main body, an elastic arm, a contact part and a convex body, wherein the elastic arm is connected to the main body; the contact part is connected to the free end of the elastic arm, and the convex body is formed on the contact part. The contact part of the elastic arm of the other terminal corresponds to the contact part of the terminal. The convex body of the other terminal is mutually staggered to the convex body of the terminal.

Description

Electronic card coupler

Technical field

The present invention is meant a kind of subcard plant of powering especially about a kind of electronic card coupler, makes electronic cards can be electrically connected to the electronic card coupler of circuit structure or storage device.

Background technology

Press, electronic cards (IC-card) is a data input device, it can be electrically connected to a circuit structure or a storage device, for example word processor, personal computer or other circuit structure, the data that are stored in the electronic cards will be transferred to this circuit structure, electronic cards is a kind of portable instrument, and it can be inserted easily and be withdrawed from by an electronic card coupler.

Known electronic card coupler; can be in order to peg graft and to withdraw from electronic cards; its mainly include an insulating body, a first terminal in order to detecting, one in order to second terminal of write-protect and one in order to by preceding two-terminal the 3rd terminal of common contact usefulness constitute and (also can only comprise two-terminal wherein certainly; and be not to comprise three terminals); the insulating body of this U shape has a matrix and left and right two side arms; this matrix is provided with a plurality of conducting terminals, and and described two side arms between form a plant space and plant for an electronic cards.

Respectively this is arranged at that conducting terminal on this matrix respectively has a weld part and for being welded on the circuit board, in the time of in electronic cards is inserted in this plant space, respectively this conducting terminal can be arranged at corresponding terminal on the electronic cards and form and electrically connect.

This first, second and third terminal all is arranged on this insulating body (for example its matrix Huo and wherein a side arm), and respectively has a weld part and for being welded on the circuit board.Wherein, this first and second terminal all has the contact site that an elastic arm and is connected in this elastic arm; The 3rd terminal then has a main body and is connected in two elastic arms of this main body, and the contact site that is formed at this two free end of elastic arm is respectively corresponding to the contact site of described first and second terminal.

When electronic cards is inserted in the plant space of this insulating body, this electronic cards can contact and take advantage of a situation and pass the elastic arm of this first terminal, the contact site of this first terminal contacts with the contact site of one of the 3rd terminal elastic arm, make this first terminal and the 3rd terminal reach electric connection, use the circuit of conducting electronic card coupler, and then electronic card coupler is come into operation, hence one can see that: contact conductivity is quite important really for terminal.And, then reach write-protected purpose with principle of uniformity (contacting) with the contact site of another elastic arm of the 3rd terminal wherein in order to write-protected second terminal.

Above-mentioned known electronic card coupler, between its first and third terminal and second and third terminal, though all can reach the purpose of electrical contact via contacting of electronic cards, but this first～three terminal all still is the contact of plane to the plane, cause actual contact point therebetween few, just its actual contact area is minimum, thereby makes resistance value higher, higher its conductivity that then makes of resistance value is on the low side relatively, and then has influence on the running of electronic card coupler.

Summary of the invention

Therefore, the present invention's main purpose is to make contacting conductivity and can be promoted effectively between its first and second terminal and the 3rd terminal, uses making this electronic card coupler have the conductivity of better quality.

In order to reach above-mentioned purpose, the invention provides a kind of electronic card coupler, it comprises: have the insulating body of a matrix and left and right two side arms, form a plant space between this matrix and this two side arm, be arranged at intervals with conducting terminal on this matrix; Be arranged at a terminal on this insulating body and have the convex body that contact site and that an elastic arm, is connected in this free end of elastic arm is formed at this contact site; And be arranged at another terminal on this insulating body, the convex body that it has a main body, is connected in the elastic arm of this main body, is connected in the contact site of this free end of elastic arm and is formed at this contact site, the contact site of the described elastic arm of this another terminal is corresponding to the contact site of this terminal, and the convex body of this another terminal and the convex body of this terminal stagger each other.

When this terminal contacted with another terminal, the convex body of this terminal can touch the contact site of this another terminal, and the convex body of this another terminal then can touch the contact site of this terminal.

Description of drawings

Fig. 1 is the three-dimensional exploded view of electronic card coupler of the present invention.

Fig. 2 is the partial enlarged drawing of electronic card coupler of the present invention according to the A part of Fig. 1.

Fig. 3 is the three-dimensional combination figure of electronic card coupler of the present invention.

Fig. 3 A is the partial enlarged drawing of electronic card coupler of the present invention according to the A part of Fig. 3.

Fig. 3 B is the partial enlarged drawing of electronic card coupler of the present invention according to the B part of Fig. 3.

Fig. 4 is the partial enlarged drawing of electronic card coupler of the present invention when termination contact.

Fig. 5 makes its resistance value low curve synoptic diagram of healing more relatively for contact area.

Embodiment

See also Fig. 1～shown in Figure 3, the invention provides a kind of electronic card coupler, it can be in order to peg graft and withdraw from electronic cards, and this electronic card coupler comprises an insulating body 2, a first terminal 3, one second terminal 4 and one the 3rd terminal 5.

This insulating body 2 has a matrix 21 and left and right two

side arms

22,23, this two

side arm

22,23 is connected in this matrix 21 2 sides one-body moldedly, use and constitute a U type body, making between this matrix 21 and this two

side arm

22,23 to be formed with a plant space 26, can plant for an electronic cards in this plant space 26.On this matrix 21 and be arranged at intervals with a plurality of terminal storage tanks, can be in order to ccontaining conducting terminal 211.

This provides on the right arm 23 that the first terminal 3 of detecting function is arranged at described insulating body 2.This first terminal 3 has an elastic arm 31, and is connected in the convex body 321 that these elastic arm 31 free-ended contact sites 32 and one are formed at this contact site 32.

This provides second terminal 4 of write-protect function also to be arranged on the right arm 23 of described insulating body 2.This second terminal 4 has an elastic arm 41, and is connected in the convex body 421 that these elastic arm 41 free-ended contact sites 42 and one are formed at this contact site 42.

This provides the 3rd terminal 5 of common contact usefulness also to be arranged on the right arm 23 of this insulating body 2.The 3rd terminal 5 has a main body 50, is connected in first and second

elastic arm

51,52 of this main body 50, is connected to these first and second

elastic arm

51,52 free-ended contact sites 511,521, be formed at the respectively convex body 512,522 of this contact site 511,521 respectively, respectively this contact site 511,521 of this first and second

elastic arm

51,52 corresponds respectively to respectively this

contact site

32,42 of described first and

second terminal

3,4.

See also shown in Fig. 3, Fig. 3 A and Fig. 3 B, the convex body 512 of this first elastic arm 51 is the pattern that staggers each other with the convex body 321 of the first terminal 3, and the convex body 522 of this second elastic arm 52 and the convex body 421 of second terminal 4 also are the pattern that staggers each other.Therefore, when this first and

second terminal

3,4 contacts with the 3rd terminal 5 respectively, the convex body 321,421 of described first and

second terminal

3,4 touches the corresponding contact portion 511,521 of the 3rd terminal 5 respectively, at this moment, 512,522 of two convex bodys of the 3rd terminal 5 can touch the

corresponding contact portion

32,42 of this first and

second terminal

3,4, in other words, no matter are what person's contacts of He Zheyu, all be that the convex body of convex and plane contact site contact with each other, but not as being known as plane and plane contact.

The generation type of described respectively this convex body is: the one side from described contact site (32,42,511,521) is driven into, and in the corresponding protrusion of the another side pattern of this convex body (321,421,512,522) respectively.Or be: the another side that directly convex body is formed at (or being arranged at) described contact site (32,42,511,521).

Certainly; the present invention's electronic card coupler is not limited to that the first～three terminal 3～5 must be arranged simultaneously; in fact; in the terminal as control usefulness on this electronic card coupler; can have only the first terminal 3 of detecting usefulness and the 3rd terminal 5 that contacts usefulness jointly; and do not have second terminal 4 that write-protect is used, so the protection range of electronic card coupler of the present invention comprises the electronic card coupler of two-terminal and three terminals.

See also shown in Figure 4, the present invention first, three terminals 3,5 (first groups) and second, three terminals 4, the contact of 5 (second groups), convex body (321 for each group, 512) or (421,522) pattern that staggers each other each other, be contacted with respectively this contact site (511 by formed a plurality of contact salient points 6 on this convex body respectively, 32) or (521,42), with first, three

terminals

3,5 is the shown situation on Fig. 4 of example, be contacted with the contact site 511 of first elastic arm 51 of the 3rd terminal 5 for the convex body 321 of the first terminal 3, because the surface of this convex body 321 has a plurality of contact salient points 6, make this convex body 321 can contact the contact site 511 of described first elastic arm 51, thereby make contact area therebetween relatively large with more contact point.

See also curve synoptic diagram shown in Figure 5, its longitudinal axis is a resistance value, and its transverse axis is a contact area, is learnt by this curve synoptic diagram, and more then its resistance value is lower for contact area, has also just represented conductivity better and resistance value is lower.Also disclosed three groups contact salient point group again in this curve synoptic diagram, the contact salient point quantity of each group is by little extremely big, and the quantity of contact salient point the more, represent contact area bigger, and contact area is bigger, its resistance value is lower, resistance value is lower, also just represented conductivity better.

Therefore, the present invention's first and

third terminal

3,5 contacts with second and

third terminal

4,5, the pattern that staggers each other each other for the convex body of each group, just: no matter be that what person what person is contacted with, be convex body and contact site contacts with each other, and these convex bodys have as previously mentioned more than a contact salient point 6, therefore the contact resistance value between terminal is greatly reduced, its conductivity is greatly promoted, truly have the running that helps electronic card coupler.

In sum, electronic card coupler provided by the present invention, really can solve the relatively poor problem of contact conductivity between known the first～three terminal, the invention belongs to a product invention with height practical value, has the enhancement on the effect, meet the application condition of patent of invention, so file an application according to Patent Law.

Only the above only is the preferable feasible embodiment of one of the present invention, the non-so interest field of promptly limiting to the present invention, and the equivalent structure variation of using specification of the present invention and accompanying drawing content to be done such as all should be contained in the present invention's the interest field.

Claims

1. electronic card coupler comprises:

Insulating body, it has a matrix and left and right two side arms, forms a plant space between this matrix and this two side arm, is arranged at intervals with conducting terminal on this matrix;

One terminal, it is arranged on this insulating body, and this terminal has the convex body that contact site and that an elastic arm, is connected in this free end of elastic arm is formed at this contact site; And

Another terminal, it is arranged on this insulating body, this another terminal has a main body, be connected in the elastic arm of this main body, be connected in the contact site and the convex body that is formed at this contact site of this free end of elastic arm, the contact site of the described elastic arm of this another terminal is corresponding to the contact site of this terminal, and the convex body of the convex body of this another terminal and this terminal staggers each other;

2. electronic card coupler according to claim 1 is characterized in that, described convex body is for being driven into from the one side of described contact site, and in the pattern of the corresponding protrusion of another side.

3. electronic card coupler according to claim 1 is characterized in that, described convex body has a plurality of contact salient points.

4. electronic card coupler according to claim 1 is characterized in that, the elastic arm of described another terminal is first and second elastic arm that is connected to its main body.

5. as the electronic card coupler as described in the claim 4, it is characterized in that, first and second elastic arm of described another terminal, its free end respectively is connected with a contact site, respectively this contact site respectively has a convex body, and the contact site of its first elastic arm is corresponding to the contact site of this terminal, and the convex body of two contact sites staggers each other.

6. as the electronic card coupler as described in the claim 5, it is characterized in that, further set up an another terminal that is arranged on this insulating body, this another terminal has the convex body that contact site and that an elastic arm, is connected in this free end of elastic arm is formed at this contact site, the contact site of second elastic arm of described another terminal is corresponding to the contact site of this another terminal, and the convex body of two contact sites also staggers each other.