Card connector with reinforcing plates

1. Field of the Invention

The present invention relates generally to a card connector, and more particularly to a SIM (Subscriber Identity Module) card connector with reinforcing plates for intensifying the insulative housing and therefore, preventing warping of the insulative housing.

2. Description of Related Arts

A SIM card connector usually includes an insulative housing, a plurality of contacts retained in the insulative housing, and a metal shield covering the insulative housing. The insulative housing includes a base portion and a pair of sidewalls extending upwardly from two opposite edges of the base portion. Each sidewall forms a plurality of protrusions. The metal shield comprises a main portion and a pair of lateral walls extending downwardly from two edges of the main portion. Each lateral wall defines a plurality of cutouts correspondingly receiving the protrusions of the insulative housing and therefore, the metal shield is secured on the insulative housing. The contacts are soldered on a printed circuit board for electrical connection. During a soldering process, high temperature is always needed and high temperature may cause warping of the insulative housing. Therefore, the protrusions of the insulative housing are deformed in the cutouts of the metal shield. The metal shield may even be difficult to be separated from the insulative housing for repairing purpose because the cutouts and the protrusions are seriously deformed.

Hence, a card connector with strengthened insulative housing, preventing warping of the insulative housing, and the metal shield thereof being easily separable from the insulative housing when repair is necessary is desired.

Accordingly, an object of the present invention is to provide a card connector with strengthened insulative housing, preventing warping of the insulative housing, and the metal shield thereof being easily separable from the insulative housing when repair is necessary.

To achieve the above object, a card connector includes an insulative housing having a base portion and a pair of opposite sidewalls extending upwardly from the base portion, a number of contacts retained in the base portion, a pair of rigid reinforcing plates each comprising a horizontal wall insert-molded in the base of the insulative housing and a vertical wall attached to the sidewall of the insulative housing, and a metal shield having a main portion and at least two lateral walls. The vertical wall includes a number of protrusions. Said lateral wall defines a number of cutouts receiving the protrusions. The metal shield cooperates with the insulative housing and the reinforcing plates for defining a card receiving space.

Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

FIG. 1 is a perspective, assembled view of a card connector constructed in accordance with the present invention;

FIG. 2 is a perspective, partly exploded view of the card connector;

FIG. 3 is a perspective, fully exploded view of the card connector; and

FIG. 4 is another view of FIG. 3 .

Reference will now be made in detail to the preferred embodiment of the present invention.

Referring to FIGS. 1-4 , a card connector 100 assembled on a printed circuit board (not shown) for electrical connection in accordance with the present invention, comprises an insulative housing 2 having a base portion 21 and a pair of sidewalls 22 extending upwardly from two opposite edges of the base portion 21 , a plurality of contacts 3 retained in the base portion 21 of the insulative housing 2 , a pair of reinforcing plates 4 attached to two opposite sides of the insulative housing 2 for increasing intension of the insulative housing 2 , and a metal shield 1 secured on the reinforcing plates 4 and cooperating with the insulative housing 2 for defining a card receiving space (not labeled).

Referring to FIGS. 3 and 4 , the base portion 21 of the insulative housing 2 defines an upper surface (not labeled) facing towards the card receiving space and a lower surface (not labeled) connected to the printed circuit board. The insulative housing 2 defines a plurality of recessed portions 211 at the lower surface thereof and a plurality of slits 212 extending through the upper and lower surfaces thereof In a preferred embodiment, the recessed portions 211 and the slits 212 are both four. The recessed portions 211 and the slits 212 are alternately positioned at two opposite edges of the base portion 21 . The slits 212 permits a number of dies (not shown) extending through. The dies are used for positioning the reinforcing plates 4 during insert-molding process. Each sidewall 22 comprises two discrete parts in this embodiment. Each sidewall 22 forms a rib 221 at an inner side thereof.

Referring to FIGS. 2-4 , the reinforcing plates 4 are insert-molded with the insulative housing 2 . Each reinforcing plate 4 comprises a vertical wall 41 and a horizontal wall 42 perpendicular to the vertical wall 41 . The vertical wall 41 forms a plurality of protrusions 411 extending outwardly. The protrusions 411 are two in a preferred embodiment. The vertical wall 41 further comprises a receiving portion 412 positioned between the protrusions 411 . A distance between the opposite receiving portions 412 is larger than that between other parts of the vertical walls 41 . The vertical wall 41 is severed from the horizontal wall 42 at respective bottom edges of the protrusions 411 and the receiving portion 412 . The horizontal wall 42 forms a plurality of soldering portions 421 which are stamped downwards the printed circuit board. The soldering portions 421 are received in the recessed portions 211 of the insulative housing 2 . The vertical wall 41 of the reinforcing plate 4 is positioned between the rib 221 of the sidewall 22 and the base portion 21 . The horizontal wall 42 of the reinforcing plate 4 is insert-molded in the base portion 21 of the insulative housing 2 . Therefore, the soldering portions 421 are exposed out of the lower surface of the insulative housing 2 via the recessed portions 211 . Each reinforcing plate 4 is fixed with the insulative housing 2 for intensifying the insulative housing 2 . The protrusions 411 and the receiving portion 412 are exposed through a space between the two discrete parts of the insulative housing 2 for securing with the metal shield 1 .

Referring to FIGS. 3 and 4 , the metal shield 1 comprises a main portion 11 , a plurality of lateral walls 12 extending downwardly from two opposite edges of the main portion 11 , and a pair of block portions 13 each positioned between two lateral walls 12 at the same edge of the main portion 11 . A distance between the block portions 13 is smaller than that of the opposite lateral walls 12 . Each lateral wall 12 defines a cutout 121 correspondingly securing with the protrusion 411 of the reinforcing plate 4 . The block portion 13 is attached to an inner side of the receiving portion 412 . Therefore, the metal shield 1 is secured on the reinforcing plates 4 via the cutouts 121 and the corresponding protrusions 411 , as well as the block portions 13 and the corresponding receiving portions 412 . That is to say, each reinforcing plate 4 has two opposite (outer and inner) sides, and the metal shield 1 includes opposite first part, i.e., the lateral wall 12 , and second part, i.e., the block portion 13 , respectively located by the two opposite sides of the reinforcing plate 4 and commonly sandwiching the reinforcing plate 4 .

Because the reinforcing plates 4 are made from rigid material, the reinforcing plates 4 are harder than the metal shield 1 . The insulative housing 2 is intensified by the reinforcing plates 4 during its insert-molding with the reinforcing plates 4 and therefore, the insulative housing 2 is prevented from wrapping. The metal shield 1 is indirectly attached to the insulative housing 2 via the reinforcing plates 4 . The metal shield 1 is easily separable away from the reinforcing plates 4 during repairing process because the connections between the cutouts 121 and the corresponding protrusions 411 , as well as the block portions 13 and the corresponding receiving portions 412 are not deformed even though the contacts 3 are soldered on the printed circuit board under high temperature.

While a preferred embodiment in accordance with the present invention has been shown and described, equivalent modifications and changes known to persons skilled in the art according to the spirit of the present invention are considered within the scope of the present invention as described in the appended claims.