CN1689030A

CN1689030A - Memory card connector with means for preventing erroneous card insertion

Info

Publication number: CN1689030A
Application number: CNA038236761A
Authority: CN
Inventors: 松本保吉; 冨田光弘
Original assignee: Molex LLC
Current assignee: Molex LLC
Priority date: 2002-10-03
Filing date: 2003-09-26
Publication date: 2005-10-26
Anticipated expiration: 2023-09-26
Also published as: WO2004032036A1; KR100663809B1; WO2004032036B1; AU2003277002A1; JP2004127731A; KR20050054986A; EP1546999A1; CN1689030B

Abstract

A memory card connector ( 14 ) includes an insulating housing ( 16 ) defining a front receptacle area communicating with an interior cavity ( 22 ) for receiving a memory card. A plurality of terminals ( 20 ) are mounted on the housing in a side-by-side array transversely across a rear of the housing. The terminals ( 20 ) have contact portions ( 20 b) at a rear of the cavity for engaging contacts on a top side of the memory card. A sheet metal shell ( 18 ) covers at least a portion of the insulating housing ( 16 ) and includes a cover plate overlying at least a portion of the cavity. The shell ( 18 ) has a wrong a insertion-proof projection ( 78 ) formed out of the cover plate and extending downwardly into the cavity and into a slot in the top of the memory card when the card is properly inserted into the cavity. The projection prevents an erroneously inserted memory card from engaging the contact portions of the terminals. The projection ( 78 ) is bent into an elbow-shaped cross-sectional configuration to prevent scarring or cracking of the memory card when erroneously inserted into the cavity.

Description

Band prevents that card error from inserting the card connector of device

Technical field

The present invention relates generally to electric connector, be specifically related to card connector.The present invention is specifically related to the terminal protection system of card connector in card connector mistake or the incorrect insertion incident.

Background technology

Storage card is a known technology, comprises the knowledge of memory circuit form or other electronic program forms.With information on the card reader reads card of some form or storage record.These storage cards are widely used in the various aspects of current E-society, and these purposes for example have: video camera, digital camera, smart phone (smartphones), music player, ATM, cable-TV decoders, toy, game machine, PC adapter, multimedia card and other electronic applications.Usually, storage card comprises contact or terminal matrix, is connected to card reading system through card connector, is connected to external device (ED) then.Connector is wanted to make card insert easily and take out, so that provide blocking the fast access of access information and program.Card connector comprises a plurality of terminals, is used for meshing smoothly with the contact matrix of card connector.In order to make storage card insert card connector easily and to eject, be provided with catapult-launching gear usually from card connector.

In this card connector, storage card might insert the card reception cavity by wrong direction, for example, storage card by opposite direction from front to back or from top to bottom direction insert in the card reception cavity.If do not proofread and correct this wrong the insertion, can cause that terminal connection part divides damage or distortion.In order to prevent that card error from inserting, one type card connector has the rib that stretches out from the insulation crust bottom.If card is by inserting from top to bottom or by vertical direction, rib reaches in the card reception cavity, so, before the contact portions of engagement terminal, makes card in abutting connection with rib.For example, invention disclosed among the open No.2001-160458 of Jap.P..

Disclose among the open No.2002-83651 of Jap.P. to have and prevented that card error from inserting another example of the card connector of device.As what describe in this patent,,, can prevent the contact portions engagement of card and terminal if when storage card inserts by direction from top to bottom or by opposite direction from front to back from the detent bumps that long limit extends internally in chamber.Regrettably, this configuration can increase the overall dimension of card connector.

For fear of the overall dimension that increases card connector, Figure 13 has herein demonstrated another example that prevents the wrong card connector that inserts.Show, cover metal shell " a " punching press and form to have the plush copper " b " of being correlated with that puts in card reception cavity " c " as Figure 13, have the card of suitable insertion, plush copper puts in the groove in the card top.If card is with respect to the connector misorientation, so, card is in abutting connection with the plush copper " b " that hangs, to prevent the contact portions of card engagement terminal.Regrettably, the plush copper of suspension " b " is so thin (referring to the thickness " bb " of dash area, about thick 0.2mm), and when card pushes away repeatedly facing to thin or sharp-pointed plush copper, plush copper will scratch or break the card plastic housing of easy damage.

The present invention has proposed improvement in order to solve above-mentioned variety of issue to prior art.

Summary of the invention

Therefore, the objective of the invention is, the card connector after a kind of new improvement is provided, prevent that card error from inserting.

In exemplary embodiments of the present invention, card connector comprises insulation crust, determines the preceding receiving area that is communicated with the inner chamber that receives storage card.A plurality of terminals are installed on the shell by the rear portion of an edge joint horizontal shell of matrix-style on one side.Terminal has the contact portions at the place, rear portion in chamber, is used to mesh the contact on the storage card top margin.Sheet metal shell covers at least a portion of insulation crust, comprises the cover plate at least a portion place that covers the chamber.Housing has outside cover plate the wrong plush copper of inserting that prevents that forms, and this plush copper puts in inner chamber downwards, and when card suitably inserted inner chamber, this plush copper put in the groove in the top of storage card.Plush copper prevents the contact portions of the wrong card engagement terminal of inserting.The crooked conglobate elbow-shaped cross-sectional configuration of plush copper scratches or breaks storage card when preventing that card error from inserting this chamber.

According to a technical scheme of the present invention, prevent that the wrong plush copper of inserting from bending to roughly U-shape structure.Plush copper can bend to roughly L-shape structure or J-shape structure or V-shape structure, and all structures all have circular elbow and are used to mesh storage card.

As disclosed herein, sheet metal shell comprises the opposing sidewalls of a pair of suspension, hangs from the long relatively edge of cover plate and constitutes an integral body with it.Sidewall is included in the bandy a plurality of installation sheets in feather edge place of wall, is used for connector is installed to circuit board.

By detailed description, will understand that other purposes of the present invention, feature and advantage below in conjunction with accompanying drawing.

Description of drawings

Think that feature of the present invention is new, and specifically define with appending claims.By this will be best understood purpose of the present invention and the feature of the description below in conjunction with accompanying drawing.Components identical is indicated with identical numeral in the accompanying drawing.In the accompanying drawing:

Fig. 1 (a) is the front view by the card connector of the principle of the invention; And Fig. 1 (b) is the enlarged drawing of " A " part among Fig. 1 (a);

Fig. 2 is the top view of card connector;

Fig. 3 is the rear view of card connector;

Fig. 4 is the side view of the card connector seen from the right of Fig. 2;

Fig. 5 is the side view of the card connector seen from the left side of Fig. 2;

Fig. 6 is that connector passes the amplification vertical sectional view that terminal is installed in the zone of locating in the shell;

Fig. 7 is that card connector is at the enlarged perspective that prevents the zone that the cover plate of the wrong plush copper of inserting from metal shell extends downwards;

Fig. 8 is a skeleton view of being with the card connector of the metal shell of removing;

Fig. 9 and Fig. 1 (b) are similar, demonstrate an alternative embodiment of the invention;

Figure 10 is the partial schematic diagram of amplification in the zone at the installation sheet place that forms in a sidewall of metal shell of connector;

Figure 11 and 12 and Fig. 1 (b) and Fig. 9 similar, demonstrate another embodiment of the present invention; With

Figure 13 is the synoptic diagram of the existing connector described in the above background technology.

Embodiment

Referring to accompanying drawing, at first referring to Fig. 1 (a)-5 and Fig. 8, implement the present invention in card connector 14 in detail, card connector 14 comprises: the metal shell 18 of the covering insulation crust that insulation crust 16 and punching press form.On the rear portion of described shell, a plurality of conductive terminals 20 laterally have been installed, referring to Fig. 8 by edge joint matrix-style on one side.Inner chamber 22 is determined in this shell and metal shell 18 combinations, and referring to Fig. 1, inner chamber 22 receives storage card 24, and storage card 24 is pressed the preceding reception area 26 that arrow " A " (referring to Fig. 2 and 8) direction is inserted connector, referring to Fig. 2.

As shown in Figure 8, storage card 24 when inserting connector by suitable orientation, comprising: preceding importing edge 28, back trailing edge 30, flat top surface 32 and flat bottom surface 34.Cut out a plurality of contact grooves 36 in the flat top surface 32, contact groove 36 is opened at 28 places, preceding importing edge of card.A plurality of contacts 38 that are used to mesh the contact portions of terminal 20 are set in the bottom of described groove.Also cut out on the flat top surface 32 of card and prevent the wrong groove 40 that inserts.At last, cut out groove 42 on the lateral edges of this card, this can illustrate afterwards.

Demonstrate insulation crust 16 among Fig. 8 better, still, in Fig. 2, also show insulation crust 16.Shell 6 is L-shape normally, is used to limit terminal mounting portion 44, longitudinal side wall part 46 horizontal expansion on the rear portion of shell that it extends forward along the end by the terminal mounting portion.Terminal extends through the opening 48 in the mounting portion.

Referring to Fig. 6, in conjunction with Fig. 4, each terminal 20 comprises contact arm 20a, and contact arm 20a puts in card reception cavity 22 forward and terminates in contact portions 20b, each contact 38 in the engagement storage card 24 in each contact groove 36.Contact arm 20a stretches out forward from the installation substrate 20c of terminal, substrate 20c is installed press-fits in each opening 48 in the terminal mounting portion 44 of shell into.The solder tails part 20d of terminal is protruding from the shell rear portion, and terminates among the welding backing 20e, to be welded on each circuitry lines on the printed circuit board (PCB) (not showing).Shell has a plurality of assembling stake (peg) 50 (referring to Fig. 1 (a), Fig. 3-5 and Fig. 7), is used for inserting the suitable mounting hole of printed circuit board (PCB).

The longitudinal side wall part 46 of shell 16 is equipped with and pushes away/pull-type card eject mechanism 52, referring to Fig. 8.Card eject mechanism is set is used for launching and take out storage card 24 from card connector, card eject mechanism is known.And, card eject mechanism comprises: the slide block 54 that can slide on sidewall sections, push slide block the turn 56 of the preceding receiving area 26 (referring to Fig. 2) of connector to, be arranged between sidewall sections 46 and the slide block 54 pin member 58 with heart-shaped cam groove (figure does not show) cooperation of slide block.Push away/pull-type card eject mechanism 52 is prior aries.When storage card 24 inserts card reception cavity 22, the brake arm 60 of groove 42 brake silppers in the lateral edges of card, therefore, slide block is along with card moves and compression spring circle 56 by the direction of insertion of card together.Card is not when being braked, and is stuck under the elastic force effect of turn 56 to eject from the card reception cavity.Demonstrate initial insertion position of storage card and complete insertion position with hacures among Fig. 2,4 and 5.

Referring to Fig. 1-5, metal shell 18 usefulness sheet metal punching presses form, and it is enough big that its size is wanted, and to cover the whole zone of being determined by insulation crust 16 basically.Metal shell comprises the

opposing sidewalls

68 and 70 of lamina tecti 66 and a pair of suspension, and opposing

sidewalls

68 and 70 trend are according to the vertical direction of connector.Sidewall 68 covers card eject mechanism 52.Sidewall 70 is determined the relative edge of card reception cavity 22, referring to Fig. 1 (a).Sidewall 70 comprises the installation sheet 72 (referring to Fig. 2) of 72a with holes, is used for fixing on the printed circuit board (PCB).Sidewall 68 has a plurality of openings 74, is used to receive a plurality of detent projection 76 on the shell, so that catch metal shell, makes the engagement of metal shell and shell.Equally, rear portion brake(-holder) block 78 (referring to Fig. 3) dangles downwards at the rear portion of connector, and has the opening 74 that can mesh with the detent projection 76 on the shell.In a word, metal shell 18 has the ordinary construction of the shape of falling U-element.

Referring to Fig. 1,2 and 7, the present invention has designed the wrong plush copper of inserting 78 that prevents that punching press forms outside the hole in the lamina tecti 66 of sheet metal shell 18.The crooked conglobate elbow-shaped cross-sectional configuration of plush copper.In other words, clearly showing plush copper 78 among Fig. 7 and be bent downwardly, is towards the back upper place bending, at the circular elbow 78c of 78b place formation at the 78a place from lamina tecti 66.Again referring to Fig. 8, when storage card 24 inserted connector by suitable direction, plush copper 78 will easily move in the groove 40 in the flat top surface 32 of storage card.But when if card inserts connector by from top to bottom direction, the preceding importing edge 28 of card can abut projection 78, prevent the contact portions 20b of edge engagement terminal 20.Equally, if storage card inserts connector by anti-vertical direction, the back edge 30 of storage card also can prevent the edge of card and the contact portions 20b engagement of terminal 20 with abut projection 78.Plush copper 78 is formed the elbow-shaped cross-sectional configuration with circle, can prevent to scratch or break the storage card that inserts connector mistakenly.The structure of the plush copper in Fig. 1,2 and 7 is a U type structure.

Fig. 9 shows another embodiment that prevents the wrong plush copper of inserting 78, and wherein, plush copper bends to the roughly cross-sectional structure of L-shape.Specifically, plush copper 78 is bent downwardly from lamina tecti 66, forms vertical leg 78a and horizontal leg 78b, to determine the elbow 78c of therebetween circle.

Figure 11 has shown another embodiment, wherein, prevents that the wrong plush copper of inserting 78 is bent downwardly from lamina tecti, forms vertical leg 78a and leg 78b up, to form the elbow 78c of therebetween circle.In fact, the plush copper 78 that shows among Figure 11 bends to roughly J-shape structure.

Figure 12 has shown another embodiment of the present invention, wherein, prevents that the wrong plush copper of inserting 78 is bent downwardly from lamina tecti 66, forms the leg 78a of certain angle and the leg 78b of certain angle up, to form the elbow 78c of therebetween circle.In fact, the plush copper 78 that shows among Figure 12 bends to roughly V-shape structure.

In Fig. 1 and 7 in all changes structure of shown U-shape plush copper, L-shape structure among Fig. 9, J-shape structure among Figure 11 and the V-shape structure among Figure 12 all have rounded bend, are used to mesh the storage card that inserts connector by wrong direction, to prevent to scratch or break storage card.

At last, Figure 10 demonstrates from the sidewall 70 of metal shell 18 installation sheet 72 to outer process.This installation sheet has the horizontal component 80 that forms in its bottom, and horizontal projection is positioned at the height place identical with the welding backing 20e of terminal 20.Horizontal component 80 has circular edge 80a, and connector is installed on the printed circuit board (PCB) 82.It is very difficult making the peripheral smooth fully of horizontal component 80, therefore, forms the part of indicating with solid line " b " rather than with dashed lines " a " by welding, therefore, does not need to have good skimming resistance.With the horizontal component 80 with circular periphery 80a, scolder 84 is moved to the bottom and the periphery of horizontal component 80, has formed good fillet, produces the antistripping resistance.Although only demonstrated the installation sheet 72 on the sidewall 70 of a metal shell,, on arbitrary limit of metal shell, a plurality of installation sheets can be set.Perhaps, buried metal staple 86 in the longitudinal side wall part 46 of shell (referring to Fig. 5 and 8), and the metal staple is welded on the welding backing on the printed circuit board (PCB).

Should be appreciated that, under the prerequisite that does not break away from spirit of the present invention and principal character, can implement the present invention with other concrete forms.Example of Miao Shuing and embodiment just illustrate the present invention and are not construed as limiting the invention herein.The details that the invention is not restricted to describe herein.

Claims

1. card connector comprises:

Insulation crust is used for definite preceding receiving area that is communicated with the inner chamber that receives storage card;

A plurality of terminals are installed on the shell by the rear portion of an edge joint horizontal shell of matrix form on one side, and this terminal has the contact portions that is used to mesh the contact on the storage card top margin at the rear portion in described chamber;

Sheet metal shell, cover at least a portion of insulation crust, the cover plate that comprises at least a portion that covers described chamber, housing has outside described cover plate the wrong plush copper of inserting that prevents that forms, and when card suitably inserted described chamber, plush copper put in inner chamber downwards, and enter in the groove in the storage card top, plush copper prevents the contact portions of the wrong storage card engagement terminal of inserting, and plush copper bends to elbow-shaped cross-sectional configuration, to prevent to scratch or break the wrong storage card that inserts inner chamber.

2. according to the card connector of claim 1, it is characterized in that the described plush copper of wrong insertion that prevents bends to roughly U-shape structure.

3. according to the card connector of claim 1, it is characterized in that the described plush copper of wrong insertion that prevents bends to roughly L-shape structure.

4. according to the card connector of claim 1, it is characterized in that the described plush copper of wrong insertion that prevents bends to roughly J-shape structure.

5. according to the card connector of claim 1, it is characterized in that the described plush copper of wrong insertion that prevents bends to roughly V-shape structure.

6. according to the card connector of claim 1, it is characterized in that described sheet metal shell comprises the opposing sidewalls of a pair of suspension, described sidewall is formed in together with the relative longitudinal edge of described cover plate.

7. according to the card connector of claim 6, it is characterized in that described sidewall is included in the bandy installation sheet of feather edge of sidewall, is used for connector is installed to printed circuit board (PCB).