BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an electrical connector, and more particularly to an electrical connector having metal shell with a retaining tab creating an interengagment between the metal shell and the housing retaining tab formed by the metal shell.
2. Description of the Related Art
U.S. Pat. No. 8,021,187 issued to Tagawa et al. on Sep. 20, 2011, discloses an electrical connector mating with a cable assembly for transmitting LVDS (Low-Voltage Differential Signaling) signal. The electrical connector includes an insulative housing, a plurality of terminals retained in the insulative housing and a metal shell covering on the housing. The terminals are arranged in a longitudinal direction in which the insulative housing extending. Each of the terminals has a retaining portion, a contacting portion extending from one end of the retaining portion in a mating direction perpendicular to the longitudinal direction and a soldering portion extending out of the insulative housing from another end of the retaining portion. The metal shell includes a body portion surrounding the insulative housing and a plurality of engaging holes extending from end edge of the body portion. The insulative housing has a plurality of engaging projections provided on an opening end edge thereof and inserting into the engaging hole.
The insulating housing and the metal shell are interlocked to each other in the longitudinal direction and a vertical direction orthogonal to the mating direction by inserting the engaging projection into the engaging hole so that rigidity is largely increased. The anchoring mechanism of the insulating housing and the metal shell do not project inside the insulating housing so that it is possible to reduce the height and make pitches fine. However, when the metal shell is mounted on the insulative housing, the engaging holes and the engaging projections are not easily disposed arranged in alignment with each other.
Therefore, an improved electrical connector is desired to overcome the disadvantages of the related arts.
SUMMARY OF THE INVENTION
An object of the present invention is to provide an electrical connector overcoming disadvantage of the metal shell which is suffered with misalignment with the insulative housing and accidentally disengaging with the insulative housing.
In order to achieve the above-mentioned object, an electrical connector in accordance with a preferred embodiment of the present invention includes an insulative housing having at least one side wall with an inner surface and an outer surface, a plurality of contact terminals arranged in a longitudinal direction and a metallic shell covering an outside of the insulative housing thereby forming a mating space. The mecallic shell includes a main plate with a plurality of retaining tabs extending therefrom. The tab further includes ears engaged with the insulative housing.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description of the present embodiment when taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of an electrical connector in accordance with the preferred embodiment of the present invention;
FIG. 2 is an exploded perspective view of the electrical connector of FIG. 1;
FIG. 3 is a cross-section view of the electrical connector taken along line 3-3 of FIG. 1;
FIG. 4 is a partly enlarged view of FIG. 1;
FIG. 5 is a front elevation view of the electrical connector of FIG. 1;
FIG. 6 is a partly enlarged view of FIG. 5;
FIG. 7 is a perspective view of a half-finished electrical connector in accordance with another embodiment of the present invention;
FIG. 8 is an exploded perspective view of the electrical connector of FIG. 7;
FIG. 9 is a cross-section view of the electrical connector taken along line 9-9 of FIG. 7;
FIG. 10 is a partly enlarged view of FIG. 7;
FIG. 11 is perspective view of the finished electrical connector processed by the half-finished electrical connector of FIG. 7;
FIG. 12 is a partly enlarged view of FIG. 11; and
FIG. 13 is a cross-section view of the finished electrical connector taken along line 13-13 of FIG. 11.
DETAILED DESCRIPTION OF THE INVENTION
Reference will now be made to the drawing figures to describe the preferred embodiments of the present invention in detail.
Referring to FIGS. 1 and 2, an electrical connector 100 includes an insulative housing 1, a plurality of contact terminals 2 arranged in the insulative housing 1 in an X direction (i.e. a longitudinal direction) and a metallic shell 3 covering an outside of the insulative housing.
Referring to FIGS. 2 and 3, the insulative housing 1 includes a first side wall 11, a second side wall 12 opposite to the first side wall 11 and a pair of end side walls 13 thereby forming a base portion 14 disposed at a rear side thereof and a receiving space 15 disposed at a front side thereof. The insulative housing defines a plurality of grooves 16 for receiving contact terminals 2. The contact terminals 2 are inserted into the grooves 16 along a Y direction (i.e. a mating direction) perpendicular to the X direction. The contact terminal 2 includes a retaining portion 21 retained in the base portion 14, a contacting portion 22 which extends from one end of the retaining portion 21 and protrudes into the receiving space 15 for electrically connecting with a mating connector (not shown) and a soldering portion 23 disposed at another end of the retaining portion 21 and extending out of the insulative housing 1 for soldering on a printed circuit board (not shown).
Referring to FIGS. 1 to 3, the metallic shell 3 is mounted onto the insulative housing 1 in an opposite direction of the Y direction and shields the insulative housing thereby forming a mating space 151 with an mating opening 152 for receiving the mating connector. The mating space 151 communicates with the grooves 16 for permitting the contact terminals 2 extending into the mating space 151 and electrically connecting with the mating connector. The metallic shell 3 includes a main plate 30 surrounding the insulative housing 1, a plurality of retaining tabs 31 extending therefrom and a plurality of guiding portions 32 staggering with the retaining tabs 31. Both of the retaining tabs 31 and guiding portions 32 extend towards the mating opening 152 from the main plate 30 along the Y direction. The main plate 30 has an upper wall 301 shielding the first side wall 11, a bottom wall 302 covering the second side wall 12 and end wall 303 shielding the end side walls 13 and unitarily connecting with the upper wall 301 or the bottom wall 302 for improving strength of the metallic shell 3. The end wall 303 defines a locking projection 304 for locking with mating connector.
Referring to FIGS. 4 to 6, the first side wall 11 of the insulative housing 1 defines an outer surface 110 and an inner surface 111. Each of the retaining tabs 31 includes a main body 311 which extends from the main plate 30 and defines a turning portion 313, and a pair of locking ears 312 engaged with the insulative housing 1 and disposed perpendicular to the main plate 30. The locking ears 312 extend into a front edge of the mating opening 152 along the X direction and are opposite to the inner surface 111 of the first side wall 11, i.e. the retaining tab 31 firstly extends from the first side wall 11, then turns to the inner surface 111 of the first side wall 11 in a Z direction (i.e. a vertical direction) perpendicular to the X, Y directions, thereby engaging with a front edge 112 of the first side wall 11 for preventing the metallic shell 3 from deformation and moving in the Z direction.
Referring to FIGS. 2 to 4, the first side wall 11 of the insulative housing 1 defines a plurality of first recesses 113 corresponding with the locking ears 312, each of which respectively receives and retains the locking ear 312 for preventing the metallic shell 3 from moving in the X direction. The outer surface 110 of the first side wall 11 also defines a plurality of second recesses 114 receiving the retaining tab 31 and a plurality of third recesses 115 receiving the guiding portions 32 for holding the metallic shell 3 on the insulative housing 1. The main body 311 and the guiding portion 32 are lower than the body portion 30 for guiding the mating connector mating with the electrical connector 1. The bottom wall 302 has a holding portion 306 retained in the second side wall 12 for holding the metallic shell 3.
Referring to FIGS. 7 to 13, an electrical connector connector 400 of another embodiment of the present invention is shown, which is similar to that of aforementioned connector except a described retaining tab 51 formed by a metallic shell 5 and an insulative housing 4 engaging with the retaining tab 51. The insulative housing 4 defines a plurality of engaging projections 41 extending from front edge of the insulative housing 4 in the Y direction perpendicular to the X direction. The retaining tab 51 forms an engaging slot 511 and a pair of blind recesses 512 in communicating with the engaging slot 511.
Referring to FIGS. 11 to 13, firstly, the engaging slot 511 of the retaining tab 51 is alignment with and inserted into the engaging projection 41, secondly the engaging projection 41 are melted by a heat implement (not shown) and filled into the blind recesses 512. So the deformed engaging projection 41 is received in the engaging slot 511 and the blind recesses 512 for holding the retaining tab 51 and the insulative housing together. The blind recesses 512 are disposed at both side of the engaging slot 511 along the X direction for decreasing the size of electrical connector 400 in the Y direction.
It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the dislosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the board general meaning of the terms in which the appended claims are expressed.
Patent Application
20120225595
