CN2417588Y - Edge blocking type connector - Google Patents

Abstract

The utility model relates to an edge blocking type connector, comprising an insulating shell and at least one grounding device, wherein, the insulating shell is provided with a front end which forms a long slot; both ends of the long slot at the front end respectively outwards convexly extend to form a support arm integrally with the insulating shell facing the same side; the grounding device is provided with an upper cantilever contact part which extends upwards and then inversely turns to be downwards positioned at the inner side of the support arm and a lower cantilever contact part which forwards elastically extends to the inner sides of the support arms from the rear end of the grounding device. When an integral circuit board is inserted into the insulating shell of the edge blocking type connector, the upper and the lower cantilever contact parts can respectively create electrical contact with ground points of an upper and a lower surfaces of the card to become a shortest and the most effective grounding path between the card and a circuit board.

Description

Bayonet connector

The utility model provides a kind of bayonet connector, is meant a kind of connector that can make the effective and rapid ground connection of the integrated circuit card of planting on it 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 a circuit board (figure does not show) and upward plugs for a 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, hold 21 to be provided with a plurality of evenly distributed contacts (golden finger) 23 before this memory card 2, and be provided with a groove 25 respectively at these memory card 2 left and right sides edge; 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 has an inboard horizontal part 351 and by the upwardly extending outside vertical of this inboard horizontal part 351 portion 353, and uprightly and flatly be extended with an elastic portion 357 forward from the outside vertical portion 353 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, also being provided with plural conductive terminal 37 in the elongated slot 33 of insulation shell 3 cooperates 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 and can embeds one in this support arm 35 and be pressed into portion 51, be pressed into portion's 51 horizontally extending weld parts 53 and by this and extend upward and coat this support arm 35 to limit a limiting section 55 of this elastic portion 357 skews by this weld part 53 on this metallic plate.

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 3; and these conducting terminals 37 in the golden finger 23 corresponding contact elongated slots 33 of its front end 21; and 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; 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 a 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 on this circuit board 4 (figure does not show) to form a grounding path via this circuit again, but because the area of ccontaining conducting terminal 37 is limited in the elongated slot 33, so the conducting terminal 37 on the 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 a considerable potential difference (being caused by this earth resistance) between memory card 2 and circuit board 4, this potential difference that is present between memory card 2 and the circuit 4 then causes 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, the utility model designer 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 between the integrated circuit card that plugs on it and the circuit board to have good ground connection effect.

Another purpose of the present utility model provides a kind of bayonet connector, makes the earth resistance that is produced between integrated circuit card that reduce to plant on it and the circuit board.

Principal character of the present utility model is to be provided with an earthing device at least one support arm of bayonet connector, this earthing device be provided with one extend upward be positioned at this support arm inboard under the counter steer then upper cantilever contact site and from the earthing device rear end forward elastic extension in the lower cantalever contact site of these support arm inboards, make after this bayonet connector is gone in an integrated circuit holding, this upper and lower cantilever contact site can be respectively produces with the earth point on this upper and lower surface of integrated circuit card and electrically contact, and become this integrated circuit card to one of circuit board the shortest and grounding path the most rapidly.

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

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 towards the same side, and form an accommodation space in this two arm room, the integrated circuit card so that plant, respectively this support arm has an elastic portion in order to this integrated circuit clip be formed in the insulation shell and can outwards be positioned at an off-position with being offset and be able to this integrated circuit card is taken out; And

At least one earthing device, selectively be installed at least one support arm, this earthing device is made of a metallic plate, its comprise a length that is positioned at the support arm outside to and upright side plate, one by this side plate base to the weld part that extends away from this support arm direction, one by this side plate upper limb cross this support arm in this accommodation space elastic extension and be suspended in this support arm inboard the upper cantilever contact site and one by this side plate upper limb cross this support arm in this accommodation space elastic extension and be suspended in this support arm inboard and with this upper cantilever contact site lower cantalever contact site separated by a distance, make should on, the lower cantalever contact site can be respectively with this integrated circuit card on, one earth point of lower surface produces electrically contact.

Technological means and effect thereof that relevant the utility model is in order to achieve the above object, feature adopted exemplify preferred embodiment now and cooperate graphic being described as follows:

Fig. 1 is the plane exploded pictorial of known connector;

Fig. 2 is the corresponding relation 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 corresponding relation figure of a preferred embodiment of the present utility model and a memory card;

Fig. 5 is the local member three-dimensional exploded view of preferred embodiment of the present utility model;

Fig. 6 is that the earthing device group of preferred embodiment of the present utility model is located at the schematic perspective view on the support arm;

Fig. 7 is that the retaining system device group of the utility model embodiment is located at the schematic perspective view on support arm and the earthing device.

Fig. 8 is the enforcement state diagram of preferred embodiment of the present utility model;

The figure number element table of comparisons

6 insulation shells, 7 earthing device

8 retaining system devices, 61 front ends

63 elongated slots, 2 integrated circuit cards

21 front ends, 67 conducting terminals

68 other ends, 25 grooves

23 contacts, 65 support arms

62 rear ends, 650 galianconism

651 inboard horizontal parts, 653 outside vertical portions

657 elastic portion, 659 edge clippings

6590 conical surfaces, 6511 bottom surfaces

6513 end faces, 6515 microscler storage tanks

6517 imbed groove 71 microscler side plates

73 clipping grooves, 74 base portions

79 lower cantalever contact sites, 791 arc contact points

750 hang groove 75 upper cantilever contact sites

751 contact planes, 77 weld parts

81 are pressed into portion's 83 weld parts

Level board on 85 limiting sections (the C shape groove) 851

Level board 8512 discontinuous segments before 8511

8513 back level board 853 lower horizontal boards

855 intermediate plates

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 5, be the preferred embodiment of one of the utility model bayonet connector, it includes an insulation shell 6, a pair of earthing device 7 and a pair of retaining system device 8 substantially, wherein:

As shown in Figure 4, this insulation shell 6 has a microscler front end 61 and a rear end 62, form an elongated slot 63 and plant for the front end 21 of an integrated circuit card 2 on this front end 61, and this integrated circuit card 2 is the memory card 2 that has memory body in the present embodiment; Be provided with plural conductive terminal 67 in elongated slot 63, the end that these electricity are led terminal 67 is arranged in elongated slot 63, and 68 power supply property of the other end are connected to a circuit board (not shown); This memory card 2 is provided with a plurality of 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; In addition (towards the place ahead) protrudes out a support arm 65 separately towards the same side one-body moldedly with this insulation shell 6 at elongated slot 63 two ends of these insulation shell 6 front ends, and between this two support arm 65 accommodation space of formation one ccontaining this memory card 2; Please refer to shown in Figure 5 again, the rear end 62 of this insulation shell 65 and these support arm 65 same galianconism 650 that extend back point-blank respectively, and respectively this support arm 65 has an inboard horizontal part 651 and by the upwardly extending outside vertical of these inboard horizontal part 651 outer rims portion 653, uprightly and flatly be extended with an elastic portion 657 forward from the outside vertical portion 563 of this support arm 65, convex with an edge clipping 659 in this elastic portion 657 towards another elastic portion 657 directions, make groove 25 that elastic portion 657 (as shown in Figure 4) can these edge clipping 659 corresponding memory cards 2 left and right sides and with these memory card 2 clippings in insulation shell 6, and can outwards be arranged in an off-position with being offset and be able to memory card 2 is taken out from the housing 6 that insulate, and this edge clipping 659 is that a periphery is the block of a conical surface 6590; In addition, as shown in Figure 5, respectively the inboard horizontal part 651 of this support arm 65 has the end face 6513 of a bottom surface 6511 that contacts with a circuit board (not shown) and this memory card 2 of supporting, long limit along inboard horizontal part 651 end faces 6513 is concaved with a microscler storage tank 6515, and between its end face 6513 and bottom surface 6511, dig be provided with one be embedded in inboard horizontal part 651 inside imbed groove 6517, this microscler storage tank 6515 is positioned to be imbedded on the groove 6517 and not connected, and imbeds groove 6517 face before inboard horizontal part 651 and expose.

Refer again to Fig. 5 and shown in Figure 6, Fig. 5 is that an earthing device 7 and retaining system device 8 are assembled in schematic diagram before the assembling on the support arm 65 of insulation shell 6, and Fig. 6 is that an earthing device 7 is assembled in the assembling schematic diagram on the support arm 65 of insulation shell 6; As shown in Figure 5, this ground device 7 by a metal lamellar body through being stamped to form; It is based on a microscler side plate 71, extend upward the surface that palintrope folds down with this microscler side plate 71 at an end of this long shaped plate 71 and be formed with a clipping groove 73 that Open Side Down, by surface direction horizontal-extending one base portion 74 of one of this clipping groove 73 side direction away from this microscler side plate 71, along the longitudinally elastic extension one lower cantalever contact site 79 of this microscler side plate 71 of one of this base portion 74 side direction, the free end of this lower cantalever contact site 79 is an arc and forms an arc contact point 791; The other end of this microscler side plate 71 extends upward the back and hangs groove 750 to what the bending of the same side of lower cantalever contact site 79 formed one downwards Open Side Down, be bent to form a upper cantilever contact site 75 to the surface of microscler side plate 71 again in the end of hanging groove 750, this upper cantilever contact site 75 has a contact plane 751, this contact plane 751 is not on same horizontal plane with this base portion 74, and the bottom between microscler side plate 71 two ends is to being formed with a weld part 77 with upper cantilever contact site 75 rightabouts, this weld part 77 is a level board face, can weld with the circuit board (not shown).

As Fig. 5 and shown in Figure 6, be located at when 7 groups of this earthing device on the support arm 65 of insulation shell 6, the clipping groove 73 of earthing device 7 is set on the galianconism 650 of support arm 65, the groove 750 of hanging of upper cantilever contact site 75 is hung on the elastic portion 657 of support arm 65, make microscler side plate 71 be attached at the lateral surface of this support arm 65, the contact plane of this upper cantilever contact site 75 is suspended in elastic portion 657 inboards of support arm 65,79 correspondences of this lower cantalever contact site are inserted in the microscler storage tank 6515 of inboard horizontal part 651 end faces 6513 of being located at support arm 65, and because lower cantalever contact site 79 highly incrementally is inclined upwardly, it is little curved that its free end is made progress, so, this lower cantalever contact site 79 is except that these arc contact point 791 protruding being exposed to the microscler storage tank 6515, and remainder all is placed in the microscler storage tank 6515 because of the end face 6513 formed planes that are lower than inboard horizontal part 651; And, the arc contact point 791 of the contact plane of this upper cantilever contact site 75 751 and this lower cantalever contact site 79 not on same horizontal plane, between the two between apart from the thickness that is slightly smaller than memory card 2.

In addition, as shown in Figure 4, when earthing device 7 imported support arms 65, the weld part 77 of this earthing device 7 extended horizontally in the outside of support arm 65, with the circuit board (not shown) on earth point weld mutually.

Please refer to Fig. 5 and shown in Figure 7 again, this imports and is sheathed on respectively on this support arm 65 from the front end of these support arms 65 retaining system device 8, it is also formed through punching press by a metal lamellar body, and the portion that is pressed into 81, in the groove 6517 of imbedding that can insert the inboard horizontal upper part 651 of this support arm 65 that is formed with on this retaining system device 8 respectively is pressed into weld part 83 and that portion's 81 front ends extend horizontally away and extends in order to the part on by these weld part 83 1 side direction and coat the limiting section 85 of this support arm 65 with 657 skews of restriction elastic portion by this; Please refer to shown in Figure 5, this limiting section 85 is shaped as the part of a C shape groove 85 with the elastic portion 657 of coating support arm 65, this C shape groove 85 comprises level board 851 on, one lower horizontal board 853 and one is positioned on this, lower horizontal board 851, intermediate plate 855 to connect these level boards between 853, as shown in Figure 7, should go up level board 851 and have a discontinuous segment 8512, that is this upper flat plate 851 is located at before intermediate plate 855 rear and front ends level board 8511 and back level board 8513 by separation and is formed, make when the side plate 71 of this earthing device 7 when this retaining is made between the limiting section 85 of device 8 and this support arm 65, this upper cantilever contact site 75 can extend in this accommodation space and is suspended in this support arm 65 inboards by crossing this support arm 65 in this discontinuous segment 8512.

Therefore, as Fig. 5 and shown in Figure 7, system device 8 is fashionable by the front end sleeve of support arm 65 when keeping off, this C shape groove 85 from the outside of support arm 65 coat this support arm 65 the going up of elastic portion 657, outside reach inferior three sides, and be positioned at outside the microscler side plate 71 of earthing device 7, make the upper cantilever contact site 75 of earthing device 7 be arranged in the discontinuous segment 8512 of the last level board 851 of retaining system device 8; As shown in Figure 7, the intermediate plate 855 of this C shape groove 85 from the outside vertical portion 653 of support arm 65 by after more and more outwards extend to skew elastic portion 657 forward, make the intermediate plate 855 and the elastic arm 657 of this support arm 65 have a displacement space, this measure makes support arm 65 be able to moderately outwards be offset, and has no restrictedly outwards to be offset to make that support arm 65 is fractureed but be unlikely; And this is pressed into portion 81 and holds after this weld part 83 and extend back, and inserts imbedding in the groove 6517 and imbedded the blocking of groove 6517 between this bottom surface 6511 and end face 6513, makes whole retaining system device 8 thereby is fixed on the support arm 65.

Then, please refer to Fig. 4 and shown in Figure 8, this that is located at insulation shell 6 for a pair of earthing device 7 and a pair of retaining system device 8 successively group is to the schematic diagram on the support arm 65, please be earlier with reference to shown in Figure 4, when a memory card 2 is inserted insulation shell 6, the elongated slot 63 that memory card 2 is had front end 21 these insulation shells 6 of aligning of golden finger inserts, at this moment, memory card 2 is between two support arms 65, when memory card 2 stressed pressing down, the elastic portion 657 that is positioned at the support arm 65 of insulation shell 6 dual-sides can be opened by the 27 outside pushing and pressing of left and right sides side and the while of this memory card 2 outward, memory card 2 is bridged at the end face 6513 of the horizontal part 651 of the inboard of this two support arm 65 with its limit, left and right sides 27, then, the elastic portion 657 of this two support arm 65 is rebounded toward in again, and with its edge clipping 659 memory card 2 is located in the insulation shell 6, make memory card 2 be in as shown in Figure 8 state; Resistance and area are inversely proportional to and are directly proportional with distance as can be known for we, if the cantilever contact site is not set on bayonet connector with ground connection, then just as known described, the grounding path of memory card 2 are golden fingers 23 of seeing through memory card 2 front ends with the elongated slot 63 of insulation shell 6 in conducting terminal 67 electrically contact, and then with the earth terminal electric connection of circuit board 8; But as seen from Figure 8, after memory card 2 is located in the insulation shell 6 of bayonet connector, the upper cantilever contact site 75 of this earthing device 7 is the upper surface of contact memory card 2 from top to bottom, and contact with the earth point 28 of memory card 2 upper surfaces with its free-ended contact plane 751, the lower cantalever contact site 79 of this earthing device 7 is by the following lower surface of contact memory card 2 up, and contact with the earth point 29 of memory card 2 lower surfaces with its terminal arc contact point 791, make memory card 2 see through should on, lower cantalever contact site 75,79 can be directly contacts with earth point 81 on the circuit board 8 with shortest path; Because the earth point 28 of memory card 2 upper surfaces can from this upper cantilever contact site 75 through microscler side plates 71 and weld part 77 soon with circuit board 8 on earth point 81 form ground connection, and the earth point 29 of memory card 2 lower surfaces also can via this lower cantalever contact site 79 through microscler side plates 71 and weld part 77 soon with circuit board 8 on earth point 81 form ground connection, and again because on being somebody's turn to do, lower cantalever contact site 75, the 79 microscler side plates 71 that connected are all much bigger than the contact 23 of these conducting terminals 67 in the insulation shell 6 and memory card 2 front ends 21 with the area of weld part 77, and via last, lower cantalever touches portion 75,79 arrive circuit boards 8 earth point 81 ground distance also than this via the conducting terminal on the insulation shell 6 67 with after circuit on the circuit board 8 is connected, the ground distance that is connected to the earth point 81 on the circuit board 8 again is short, so it is a lot of that the resistance that can produce in the grounding path of and distance weak point big at this area relatively reduces naturally, and it is many to make that the potential difference that forms between memory card 2 and circuit board 8 also relatively reduces, thereby has reduced the chance that memory card 2 makes a mistake effectively.

In sum, the utility model utilization is installed at least one earthing device 7 and a pair of retaining system device 8 on the bayonet connector, make form respectively on the earthing device 7 one extend upward by microscler side plate 71 front ends and counter steer under upper cantilever contact site 75 and by microscler side plate 71 rear ends along there being side plate 71 inboards highly to increase progressively the lower cantalever contact site 79 of extension forward, and on this, lower cantalever contact site 75,79 free end forms a contact plane 751 and an arc contact point 791 respectively, make when a memory card 2 is inserted this bayonet connector and stride on the inboard horizontal part 651 of frame at support arm 65, the contact plane 751 of this upper cantilever contact site 75 contacts at the earth point 28 of memory card 2 upper surfaces, the arc contact point 781 of lower cantalever contact site 79 then contacts in the earth point 29 of memory card 2 lower surfaces, and the shortest grounding path between formation memory card 2 and the circuit board 8, make the resistance and the potential difference that not only reduce by 8 of memory card 2 and circuit boards, also improved known bayonet connector and caused the make a mistake shortcoming of action of memory card 2 easily.

Claims (6)

1. bayonet connector includes:

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 towards the same side, and form an accommodation space in this two arm room, the integrated circuit card so that plant, respectively this support arm has an elastic portion in order to this integrated circuit clip be formed in the insulation shell and can outwards be positioned at an off-position with being offset and be able to this integrated circuit card is taken out; And

At least one earthing device, selectively be installed at least one support arm, this earthing device is made of a metallic plate, its comprise a length that is positioned at the support arm outside to and upright side plate, one by this side plate base to the weld part that extends away from this support arm direction, one by this side plate upper limb cross this support arm in this accommodation space elastic extension and be suspended in this support arm inboard the upper cantilever contact site and one by this side plate upper limb cross this support arm in this accommodation space elastic extension and be suspended in this support arm inboard and with this upper cantilever contact site lower cantalever contact site separated by a distance, make should on, the lower cantalever contact site can be respectively with this integrated circuit card on, one earth point of lower surface produces electrically contact.

2. bayonet connector as claimed in claim 1, it is characterized in that, this connector further comprises a pair of retaining system device, be contained in respectively on these support arms, in order to coat the part of these elastic portion, respectively this retaining system device is made of metallic plate by one, it comprises a portion that is pressed into that can embed in these support arms, one is pressed into the extended weld part of portion's one end and by this is extended to limit the limiting section of this elastic portion skew by this weld part one side, when this retaining system device was installed on this support arm that is assembled with this at least one earthing device, the side plate of this earthing device was between the limiting section and this support arm of this retaining system device.

3. bayonet connector as claimed in claim 2, 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, this elastic portion is erectly extended forward from the outside vertical portion of this support arm, 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, end face at this inboard horizontal part is concaved with one first guide groove downwards, between its end face and bottom surface, be embedded with a front end at this inboard horizontal part and have second guide groove of opening, make the lower cantalever contact site of this earthing device can be after this inboard horizontal part end slip into this first guide groove and part is protruding is exposed on first guide groove, and the portion that is pressed into of this retaining system device can embed from the front end of this inboard horizontal part this this second guide groove, and be pressed at this and have a step between portion and the weld part, make that the portion of being pressed into is higher than weld part.

4. bayonet connector as claimed in claim 3, it is characterized in that, the free end of this upper cantilever contact site is a contact plane, the free end of this lower cantalever contact site is an arc contact point, the contact plane of this upper cantilever contact site is higher than the arc contact point of this lower cantalever contact site, and when this lower cantalever contact site was in first guide groove, its arc contact point protruded from outside this first guide groove.

5. bayonet connector as claimed in claim 4, it is characterized in that, the limiting section of this retaining system device comprises level board on, one lower horizontal board and one is positioned on this, between the lower horizontal board to connect the intermediate plate of these level boards, this intermediate plate extends to this elastic portion forward from the outside vertical portion of this support arm with outwards being offset, when the side plate of this earthing device is between the limiting section of this retaining system device and this support arm, should go up level board and have discontinuous segment, and make this upper cantilever contact site in this accommodation space, to extend and be suspended in this support arm inboard by crossing this support arm in this discontinuous segment.

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

Images