CN2417586Y - Edge blocking type connector - Google Patents

Abstract

The utility model provides an edge blocking type connector, comprising an insulating shell provided with a front end. A long slot is formed at the front end. Both ends of the long slot respectively outwards convexly extend to form a support arm, forming a containing space so as to contain an integrated circuit board. The utility model also comprises a pair of blocking devices which is respectively arranged on each of the support arm. Each of the blocking devices is made of a metal sheet comprises a pressing part which can be embedded in each of the support arms, a welding part which can horizontally extend from the pressing part, a spacing part which upwards extends from the welding part and is contacted with each of the support arms to limit an elastic part to shift and a cantilever contact part which can forwards extend at least from the welding part and can backwards, inversely and elastically extend above the welding part.

Description

Bayonet connector

The utility model provides a kind of bayonet connector, is meant a kind of connector that the path, short circuit ground of the integrated circuit card planted on it can be provided especially.

At first, please refer to Figure 1 and Figure 2, for in the industry cycle being well known at present and widely-used a kind of memory card connector 1, this connector 1 is welded on circuit board (figure does not show) and upward plugs on it for memory card 2, this memory card 2 can be produced with circuit board indirectly to be electrically connected, as shown in fig. 1, this connector 1 is made up of an insulation shell 3 and a pair of retaining system device 5 substantially, wherein:

This insulation shell 3 has a microscler front end 31, be formed with an elongated slot 33 plants for the front end 21 of above-mentioned memory card 2 in these front end 31 inside, memory card 2 as shown in FIG. 2, the front end 21 of this memory card 2 is to be provided with contact (golden finger) 23 neatly a plurality of and that all arrange, and is provided with a groove 25 respectively at these memory card 2 left and right sides edge; And elongated slot 33 two ends and this insulation shell 3 at these insulation shell 3 front ends outwards protrude out a support arm 35 one-body moldedly separately towards the same side, and respectively this support arm 35 have one at the horizontal part 351 and of inboard by these horizontal part 351 upwardly extending vertical component effects 353 in the outside in the inboard, and uprightly and flatly be extended with an elastic portion 357 forward from the vertical component effect 353 in the outside of this support arm 35, convex with an edge clipping 359 in this elastic portion 357 towards another elastic portion 357 directions, make groove 25 that 359 pairs of this edge clippings should memory card 2 left and right sides and with these memory card 2 clippings in insulation shell 3 and can outwards be positioned at an off-position with being offset and be able to this memory card 2 is taken out in insulation shell 3, in addition, in the elongated slot 33 of insulation shell 3, also there is plural conductive terminal 37 to cooperate these golden fingers 23 of these memory card 2 front ends 21 to electrically connect with its generation.Please refer to again shown in Fig. 1,2, this is installed in respectively on these support arms 35 retaining system device 5, it is made of a metallic plate respectively, is formed with one of can embed in this support arm 35 on this metallic plate to be pressed into portion 51, and to be pressed into portion's 51 horizontally extending weld parts 53 and by this and to extend upward and coat this support arm 35 to limit one of these elastic portion 357 skews limiting section 55 by this weld part 53.

Please refer to shown in Figure 3 again; when being inserted in this memory card 2 on the connector 1; the front end 21 of memory card 2 inserts in the elongated slot 33 of this insulation shell 1; and these conducting terminals 37 in golden finger 23 corresponding these elongated slots 33 of contact of its front end 21; this memory card 2 drops between this two support arm 35; simultaneously; because of the limiting section 55 of this retaining system device 5 is sheathed on this two support arm 35; simultaneously; because of the limiting section 55 of this retaining system device 5 is sheathed on this two support arm 35; so can keep off outer the scope of holding these elastic portion 357 certain limit, make not reason be drawn back excessive and fracture, and protect these support arms 35 to avoid being subjected to damage of external force.

Yet, this connector but has its shortcoming, as shown in Figure 3, when memory card 2 is inserted in this connector 1, this memory card 2 produces with this circuit board 4 by this connector 1 and is electrically connected, memory card 2 can be via its front end some have the golden finger 23 of ground connection effect and contact with some conducting terminal corresponding 37 in this connector 1 elongated slot 33 with it, and see through these conducting terminals 37 and be connected with circuit on this circuit board 4, be connected to earth point (not shown) on this circuit board 4 to form grounding path via this circuit again, but because the area of ccontaining conducting terminal 37 is limited in this elongated slot 33, so that the conducting terminal 37 on this connector 1 generally all designs very tinyly, and general circuit board 4 is walked line density for improving it, the circuit of laying on it mostly is elongated, and by resistance and area be inversely proportional to the principle that is directly proportional of distance as can be known, this memory card 2 is connected with circuit on the circuit board 7 through the conducting terminal 37 on these connectors 1 by golden finger 23, be connected to the narrow and distance of area of one of earth point on this circuit board 4 grounding path again, so in this grounding path, can produce considerable earth resistance, so that can produce considerable potential difference (being caused by this earth resistance) between this memory card 2 and circuit board 4, this potential difference that is present between this memory card 2 and the circuit board 4 then causes this memory card 2 to produce malfunction easily in processing procedure.

So, because above-mentioned known connector 1 can cause this memory card not good so that produce easily the make a mistake shortcoming of action of excessive potential difference with this circuit board because of grounding path, be with, this creator is at this problem, with the accumulation many years of experience, active research has the generation of the utility model " bayonet connector " eventually.

Main purpose of the present utility model provides a kind of bayonet connector, makes the effect that has good ground connection between the integrated circuit card inserted thereon and the circuit board.

Another purpose of the present utility model provides a kind of bayonet connector, to reduce the integrated circuit card inserted thereon and the earth resistance between the circuit board.

Principal character of the present utility model is that the retaining system device at this bayonet connector has the cantilever contact site, this cantilever contact site is to be extended forward by the weld part front end, flexibly extend this weld part top to counter-rotating then, it is in order to contacting with earth point on the integrated circuit card, with as the path, short circuit ground of one of this integrated circuit card and circuit board.

For achieving the above object, a kind of bayonet connector of the utility model comprises:

One insulation shell, has a front end, form an elongated slot in this front end place, two ends and this insulation shell at this front end elongated slot outwards protrude out a support arm integratedly separately, and form an accommodation space in this two arm room, just an integrated circuit card is placed in this accommodation space, and the one end is inserted in this elongated slot, and respectively this support arm has an elastic portion in order to this integrated circuit clip be formed on wherein and can outwards be positioned at an off-position with being offset and be able to this integrated circuit card is taken out;

The a pair of retaining system device that is installed in respectively on these support arms, respectively this retaining system device is made of a metal lamellar body, it comprises one one of can embed in this support arm the portion that is pressed into, and one is pressed into the horizontally extending weld part of portion by this, and one is extended upward to limit the limiting section of this elastic portion skew by this weld part; And

One cantilever contact site extends forward from the front end of at least one weld part, and counter-rotating flexibly extends this weld part top backward then, and this cantilever contact site electrically contacts in order to produce with an earth point of this integrated circuit card.

Relevant the utility model is to reach technological means and the effect thereof that above-mentioned purpose, feature adopt, and exemplifies preferred embodiment now and cooperates graphic being described as follows:

Fig. 1 is the floor map of known connector;

Fig. 2 is the corresponding states figure of memory card and known connector;

Fig. 3 is that memory card places the generalized section on the known connector;

Fig. 4 is the floor map of the utility model preferred embodiment;

Fig. 5 is the three-dimensional combination figure of the utility model preferred embodiment;

Fig. 6 is the three-dimensional exploded view of the utility model preferred embodiment;

Fig. 7 is that memory card places the enforcement state diagram on the bayonet connector of the utility model preferred embodiment;

Fig. 8 is that memory card places the generalized section on the bayonet connector of the utility model preferred embodiment.

The figure number element table of comparisons

6 insulation shells, 7 retaining system devices

61 front ends, 63 elongated slots

2 integrated circuit cards, 21 front ends

67 conducting terminals, 8 circuit boards

23 contacts, 25 grooves

65 support arms, 651 inboard horizontal parts

653 outside vertical portions, 657 elastic portion

659 edge clippings, 6511 bottom surfaces

6513 end faces 71 are pressed into portion

73 weld parts, 75 limiting sections

6516 slotted eyes, 77 C shape guide grooves

751 level boards, 753 level boards

755 intermediate plates, 78 cantilever contact sites

781 arc contact points, 29 earth points

At first, be noted that in this manual, identical label is in order to indicate identical or similar elements.

Please refer to Fig. 4 and shown in Figure 7, be the preferred embodiment of one of the utility model bayonet connector, it mainly includes an insulation shell 6 and a pair of retaining system device 7, wherein:

This insulation shell 6 has one and holds 61 before microscler, forms an elongated slot 63 for holding 21 to plant before the integrated circuit card 2 on this front end 61, and this integrated circuit card 2 has the memory card 2 of memory body in being in the present embodiment; Be provided with plural conductive terminal 67 in elongated slot 63, the one end can be electrically connected to a circuit board 8, and its other end is arranged in elongated slot 63; As shown in Figure 7, memory card 2 is provided with a plurality of neat and evenly distributed contacts 23 (being commonly called as golden finger) at its front end 21, and is provided with a groove 25 respectively at these memory card 2 left and right sides edge; As shown in Figure 4, elongated slot 63 two ends and this insulation shell 6 at these insulation shell 6 front ends outwards protrude out a support arm 65 one-body moldedly separately towards the same side, and each support arm 65 has an inboard horizontal part 651 and reaches by the upwardly extending outside vertical of inboard horizontal part 651 outer rims portion 563, and uprightly and flatly be extended with an elastic portion 657 forward from the vertical component effect 653 of this support arm 65 in the outside, convex with edge clipping 659 in this elastic portion 657 towards another elastic portion 657 directions, and as shown in Figure 7, make this elastic portion 657 can this edge clipping 659 pairs should memory card 2 left and right sides groove 25 and with these memory card 2 clippings in insulation shell 6, and can outwards be arranged in the off-position with being offset and be able to this memory card 2 is taken out in insulation shell 6; As shown in Figure 5, respectively these support arm 65 inboard horizontal parts 651 have bottom surface 6511 that contacts with motherboard and the end face 6513 that supports this memory card.

Please refer to Fig. 4 and shown in Figure 6 again, this is to be installed in respectively on these support arms 65 to retaining system device 7, respectively this retaining system device 7 is through being stamped to form by the metal lamellar body, this retaining system device 7 is formed with a portion that is pressed into 71 that can embed in this support arm 65, one is pressed into the horizontally extending weld part 73 of portion's 71 trailing edges and by extending on these weld part 73 1 side direction and coating this support arm 65 to limit the limiting section 75 of these elastic portion 657 skews by this, as Fig. 5 and shown in Figure 6, this is pressed into portion 71 and extends back from these weld part 73 rear ends and insert the slotted eye of being offered between the bottom surface 6511 of this inboard horizontal part 651 and the end face 6,513 6515, and this is pressed into portion 71 and weld part 73 has the discrepancy in elevation and forms a step, make this be pressed into portion 71 and be higher than this weld part 73, and the 6511 same planes, bottom surface of the inboard horizontal part 651 of this weld part 73 and this support arm 65; For another example shown in Fig. 5,6, this limiting section 75 is bent into C shape guide groove 77, this C shape guide groove 77 coats on the part of this elastic arm 657 by the outside of support arm 65, reach inferior three sides outward, as Fig. 4 and shown in Figure 6, this limiting section 75 is made of with the intermediate plate 755 that is connected these level boards 751,753 two level boards 751,753, and this intermediate plate 755 outwards extends to this elastic arm 657 (as shown in Figure 7) forward in skew ground from this outside vertical portion 653.

Referring again to Fig. 4 and shown in Figure 6, principal character of the present utility model is that the metal lamellar body of this formation retaining system device 7 is provided with a cantilever contact site 78, this cantilever contact site 78 extends forward from the front end of this weld part 73, reverse backward then and be inclined upwardly and flexibly extend this weld part 73 tops, and as shown in Figure 8, this cantilever contact site 78 is formed with an arc contact point 781 in its free end, after making that keeping off 7 groups in system device is located on the support arm 65, the arc contact point 781 of the cantilever contact site 78 of retaining system device is higher than the end face 6513 formed planes of the inboard horizontal part 651 of this support arm 65, so when memory card 2 was inserted in this insulation shell 6 and be placed on the end face 6513 of this inboard horizontal part 651 with its left and right sides, this arc contact point 781 can contact the earth point 29 on memory card 2 and produce electrically contact.

Then, please refer to Fig. 5 and shown in Figure 7, when a memory card 2 is desired to be plugged on the bayonet connector, this memory card 2 had elongated slots 63 insertions of holding 21 these insulation shells 6 of aligning before the golden finger, at this moment, this memory card 2 is between this two support arm 65, when these memory card 2 stressed pressing down, the elastic arm 657 of this two support arm 65 can outwards be pushed against by this limit, memory card 2 left and right sides 27 and open outward simultaneously, make this memory card 2 bridge at the end face 6513 of this two support arm 65 at the horizontal part 651 of inboard with its limit, left and right sides 27, afterwards, the elastic portion 657 of this two support arm 65 is rebounded toward in again, and this memory card 2 is located in this insulation shell 6, and be in as shown in Figure 8 state with this edge clipping 659; Resistance and area are inversely proportional to and are directly proportional with distance as can be known for we, if no cantilever contact site 78, then the grounding path of memory card 2 is to see through the golden finger 23 of memory card 2 front ends electrically to contact with conducting terminal 67 in this connector elongated slot 63, and then is connected with the earth terminal of circuit board 8; But as seen from Figure 8, the arc contact point 781 of cantilever contact site 78 ends that the weld part 73 of this retaining system device 7 up extends contacts at this memory card 2 bottom surfaces, being located at one of these memory card 2 bottom surfaces earth point 29 with this contacts, the arc contact point 781 that makes this memory card 2 see through this cantilever contact site 78 finds the shortest path with this circuit board 8 ground connection, therefore this memory card 2 can from this cantilever contact site 78 through these weld parts 73 soon with this circuit board 8 on earth point 81 form ground connection, again because this cantilever contact site 78 is extended by weld part 73, and the area of this weld part 73 is more much bigger than the conducting terminal on the connector 67, so it is a lot of that the resistance that is produced in this grounding path that distance is short and area is big relatively reduces naturally, it is many to make that the voltage that produces between this memory card 2 and circuit board 8 also relatively reduces, and has reduced the generation of these memory card 2 malfunctions effectively.

Comprehensively above-mentioned, the utility model utilization is installed in the weld part 73 of the retaining system device 7 on this bayonet connector, extend upward one from this weld part 73 and have elastic cantilever contact site 78, and form an arc contact point 781 on end face 6513 formed planes that exceeds the inboard horizontal part 651 of this support arm 65 at the end of this cantilever contact site 78, make when this memory card 2 is striden on the end face 6513 of frame at this inboard horizontal part 651, this arc contact point 781 just can contact the earth point 29 of being located at these memory card 2 bottom surfaces, and form the shortest between this memory card 2 and the circuit board 8 also is the fastest grounding path, not only reduce the resistance and the potential difference of 8 of memory card 2 and circuit boards, also improved the shortcoming that known connector easily causes the memory card malfunction.

Claims (5)

1. bayonet connector comprises:

One insulation shell, has a front end, form an elongated slot in this front end place, two ends and this insulation shell at this front end elongated slot outwards protrude out a support arm integratedly separately, and form an accommodation space in this two arm room, just an integrated circuit card is placed in this accommodation space, and the one end is inserted in this elongated slot, and respectively this support arm has an elastic portion in order to this integrated circuit clip be formed on wherein and can outwards be positioned at an off-position with being offset and be able to this integrated circuit card is taken out;

The a pair of retaining system device that is installed in respectively on these support arms, respectively this retaining system device is made of a metal lamellar body, it comprises one one of can embed in this support arm the portion that is pressed into, and one is pressed into the horizontally extending weld part of portion by this, and one is extended upward to limit the limiting section of this elastic portion skew by this weld part; And

One cantilever contact site extends forward from the front end of at least one weld part, and counter-rotating flexibly extends this weld part top backward then, and this cantilever contact site electrically contacts in order to produce with an earth point of this integrated circuit card.

2. bayonet connector as claimed in claim 1, it is characterized in that respectively this support arm has an inboard horizontal part and by the upwardly extending outside vertical of this inboard horizontal part portion, the elastic portion of this support arm is erectly extended forward from this outside vertical portion, respectively the inboard horizontal part of this support arm has the end face of a bottom surface that contacts with circuit board and this integrated circuit card of supporting, this is pressed into portion and extends back from the rear end of this weld part and insert between the end face and bottom surface of this inboard horizontal part, and this is pressed into has a step between portion and the weld part, make this portion of being pressed into be higher than this weld part.

3. bayonet connector as claimed in claim 2, it is characterized in that, this cantilever contact site forms an arc contact point in its free end, and after these retaining system devices were mounted on these support arms, this arc contact point of this cantilever contact site was higher than the formed plane of end face of the inboard horizontal part of this support arm.

4. bayonet connector as claimed in claim 3, it is characterized in that, this limiting section is shaped as a C shape guide groove, this C shape guide groove coats the part of the elastic portion of this support arm, this C shape guide groove comprise two level boards and between this two level board connecting the intermediate plate of these level boards, and this intermediate plate extends to this elastic portion forward from the outside vertical portion of this support arm with outwards being offset.

5. as each described bayonet connector among the claim 1-4, it is characterized in that this integrated circuit card is the memory card that has memory body in.

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