BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an electrical card connector adapted for permitting various of electronic cards to be compatibly nestled therewith.
2. Description of Related Art
Electrical card connectors are widely used in computer industry for electrically connecting with inserted electronic cards which function as removable mass storage devices. With an apparently increasing of various types of electronic cards, an electrical card connector capable of compatibly insertion of various of electronic cards is required.
A conventional CF card adapter described in U.S. Pat. No. 6,139,338 comprises an U-shaped plastic frame formed with a pair of legs, an adapter substrate integrally connected to a front portion of the plastic frame, a pin header having a plurality of pins capable of mating with a CF card. The pin header comprises a header housing, a pair of round rods longitudinally extending rearwardly on a pair of opposite sides of header housing, a pair of coiled spring loosely encircling around the round rods and a plastic retention portion securely covering rear portions of the pins. The retention portion is provided with a body portion and a pair of extensions projecting laterally from an outer surface of the body portion. The frame has a pair of engaging portions formed on the opposite legs thereof for engaging with the extensions. The retention portion is driven rearward in a normal statue under a resilient force provided by the coiled springs. When a CF card is inserted into an opening defined between the opposite engaging portions of the U-shaped frame, the retention portion would yieldingly withdraw to expose the pins for permitting the pins to be mated with a plurality of terminals of the CF card.
The body portion and the opening must have substantially the same width for permitting the extensions to be engaged with the engaging portions. Therefore, when the retention portion is assembled to the frame through the opening, the extensions projecting laterally from the outer surface of the body portion would be held up by the engaging portions thus to make the assembling process quite difficult. Additionally, the CF card adapter is just adapted for electrically connecting with the CF card and can not compatibly connect with any other types of electronic cards.
Hence, an improved electrical card connector is required to overcome the above-mentioned disadvantages of the related art.
SUMMARY OF THE INVENTION
A primary object of the present invention is to provide an electrical card connector capable of compatibly connecting with various of electronic cards.
Another object of the present invention is to provide an electrical card connector having a protective device capable of being easily assembled thereto.
To achieve the aforementioned objects, an electrical card connector for compatibly electrically connecting with a plurality of electronic cards, comprising: an insulator defining a number of recesses for insertion of the electronic cards, a number of contacts assembled to the insulator and a protective device provided with a pair of resilient arms. Each resilient arm is formed with a hook engageable with the insulator. The protective device slides to expose the contacts when a suitable card is inserted.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description of a preferred embodiment when taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an assembled perspective view of an electrical card connector in accordance with the present invention with a CF card is inserted therein;
FIG. 2 is an exploded view of the electrical card connector as shown in FIG. 1;
FIG. 3 is an exploded view of the electrical card connector of FIG. 2 taken from another aspect;
FIG. 4 is a perspective view of the protective device as shown in FIG. 2;
FIG. 5 is a cross-sectional view of the electrical card connector as shown in FIG. 1 taken along line 6-6 before the CF card is inserted therein;
FIG. 6 is a cross-sectional view of the electrical card connector as shown in FIG. 1 taken along line 6-6 when the CF card is inserted therein;
FIG. 7 is a cross-sectional view of the electrical card connector as shown in FIG. 1 taken along line 8-8 before the CF card is inserted therein; and
FIG. 8 is a cross-sectional view of the electrical card connector as shown in FIG. 1 taken along line 8-8 when the CF card is inserted therein.
DETAILED DESCRIPTION OF THE INVENTION
Reference will now be made to the drawing figures to describe the present invention in detail. Referring to FIG. 2, an electrical card connector 100 in accordance with the preferred embodiment of the present invention is adapted for compatibly electrically connecting with a CF card 5, the SD/MMC card (not shown), the MS card (not shown) and the XD card (not shown).
Referring to FIG. 2 in conjunction with FIG. 3, the electrical card connector 100 comprises an insulator 1, a plurality of contacts 2 embedded in the insulator 1, a protective device 3 assembled to the insulator 1 and a cover 4 attached to a rear portion of the insulator 1.
Referring to FIG. 2, 3 in conjunction with FIG. 5, the insulator 1 is a substantially rectangular case, comprising a rear wall 13, a forwardly extending periphery wall 16, an inner wall 12 and a top wall 15 to thereby define a cavity 11 therebetween. The insulator 1 has a longwise-extended separator 14 formed in the cavity 11 and a rectangular tongue portion 17 formed between the periphery wall 16 and the separator 14. The tongue portion 17 extending parallel to the top wall 15 connects a middle portion of the periphery wall 16 and a top portion of the separator 14 together to thereby make the cavity 11 divided into a plurality of recesses. The tongue portion 17 has a CF card recess 111 corresponding to the CF card 5 defined thereabove and an SD/MMC card recess 112 corresponding to the SD/MMC card defined therebelow. An MS card recess 113 corresponding to the MS card is defined between the separator 14 and the inner wall 12. The MS card recess 113 has an XD card recess 114 corresponding to the XD card defined therebelow and communicating therewith.
The inner wall 12 and the periphery wall 16 respectively has a flange 121, 161 projecting inwardly therefrom and extending along an insertion direction of the CF card 5 for engaging with a pair of grooves 51 defined at lateral edges of the CF card 5. Additionally, the inner wall 12 and the periphery wall 16 are respectively provided with a step-like engaging portion 122, 162 at a rear end thereof. The rear wall 13 has a pair of posts 131 projecting forwardly from an inner surface thereof. The insulator 1 additionally comprises a pair of resilient member 18.
The contacts 2 comprises a plurality of electrically contacts 21 and a plurality of detect contacts 22. Each electrical contact has a intermediate portion 212, a forwardly extending contact end 211 and a soldering foot 213.
Referring to FIG. 4, the protective device 3 comprises a moveable portion 31 and a pair of coiled springs 32 mounted on the moveable portion 31. The moveable portion 31 comprises a rectangular body portion 311 and two pairs of resilient arms 312 extending perpendicularly from opposite sides of the body portion 311. The body portion 311 has a pair of dimples 3111 defined at an inner surface thereof and a plurality of through holes 3112 defined between the pair of apertures 3111 and arranged in two arrays. Each pair of resilient arms 312 have a slot 313 defined therebetween. Each resilient arm 312 has a hook 3121 formed at a free end thereof.
Referring to FIGS. 1-5 in conjunction with FIG. 7, in assembly, the contacts 2 are firstly assembled to the insulator 1 with contact ends 211 thereof exposed toward the insertion direction of the cards and the soldering feet 213 extending outwardly form a bottom of the insulator 1 for soldering onto a PCB (not shown). One resilient member 18 is mounted in the insulator 1 between the CF card recess 111 and the SD/MMC card recess 112, the other resilient member 18 is disposed between the MS card recess 113 and the XD card recess 114. The pair of circle springs 32 are partly retained in the dimples 3111. The moveable portion 31 together with the circle springs 32 are inserted into the cavity 11 with the resilient arms 312 thereof resiliently bended inwardly and the flanges 121, 161 sliding in the slots 313 thereof. The protective device 3 is fixed to the insulator 1, with the circle springs 32 thereof loosely encircling around the posts 131, the body portion 311 thereof resisted against by the circle springs 32, the through holes 3112 thereof retaining the contact ends 211 of the electrical contacts 21 and the hooks 3121 thereof engaging with the engaging portions 122, 162. The cover 4 is attached to a rear portion of the insulator 1 finally for covering the contacts 2.
Referring to FIG. 6 in conjunction with FIG. 8, in use, inserting a CF card 5 into the CF card recess 111 with the flanges 121, 161 sliding along the grooves 51. Meanwhile, the moveable portion 31 would yieldingly withdraw to expose the contact ends 211 of the electrical contacts 21 outside the body portion 311 to thereby permitting insertion of the electrical contacts 21 into the CF card 5. The protective device 3 locks on the insulator 1 and the electrical contacts 21 are electrically connected with the CF card 5 when the CF card 5 is fully inserted in the insulator 1. At the same time, the CF card 5 is inserted above a top portion of the resilient member 18 to thereby downwardly depress the resilient member 18. The resilient member 18 is resiliently depressed toward the SD/MMC card recess 112 to block off insertion of the SD/MMC card. Thus the SD/MMC card can't be inserted into the SD/MMC card recess 112 unless the CF card 5 is drawn out from the CF card recess 111.
To compare with the conventional invention, one merit of this invention is defining a plurality of recesses 111, 112, 113, 114 for insertion of various of electronic cards. Additionally, the moveable portion 31 is provided with two pairs of resilient arms 312 capable of being resiliently bended inwardly for avoiding making the hooks 3121 thereof being held up by the walls 12, 16, thus to ease insertion of itself into the cavity 11 during assembly.
However, the disclosure is illustrative only, changes may be made in detail, especially in matter of shape, size, and arrangement of parts within the principles of the invention.
Patent Application
20060134947
