BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an electrical connector comprising: an insulative housing including a pair of side walls and a tongue located between the pair of side walls; a first row of contacts and a second row of contacts secured to the pair of side walls, respectively, each of the two rows of contacts having a fixed portion, a U-shaped mating portion, and a connecting portion between the fixed portion and the U-shaped mating portion; and a ground shield to improve electrical characteristics.
2. Description of Related Art
U.S. Pat. No. 10,573,985 discloses an electrical connector assembly comprising: a receptacle connector including an insulative housing and a first and second rows of contacts secured to the insulative housing; and a complementary plug connector including a stationary housing, a separate movable housing, and a first and second rows of contacts secured between the stationary and movable housings. The receptacle connector further includes a respective retained fitting at each of two ends thereof; the plug connector further includes respective retaining fittings which engages the retained fittings. The retaining fittings reinforce the movable housing of the plug connector.
SUMMARY OF THE INVENTION
An electrical connector comprises: an insulative housing including a pair of side walls and a tongue located between the pair of side walls; a first row of contacts and a second row of contacts secured to the pair of side walls, respectively, each of the two rows of contacts having a fixed portion, a U-shaped mating portion, and a connecting portion between the fixed portion and the U-shaped mating portion; and a ground shield secured to the tongue, the ground shield having a base, a first row of contacting portions in touch with selected ones of the first row of contacts, a second row of contacting portions in touch with selected ones of the second row of contacts, and a terminating end.
An electrical connector assembly comprises: a first connector including: an insulative housing including a pair of side walls and a tongue located between the pair of side walls; a first row of contacts and a second row of contacts secured to the pair of side walls, respectively, each of the two rows of contacts having a fixed portion, a U-shaped mating portion, and a connecting portion between the fixed portion and the U-shaped mating portion; and a ground shield secured to the tongue, the ground shield having a base, a first row of contacting portions in touch with selected ones of the first row of contacts, a second row of contacting portions in touch with selected ones of the second row of contacts, and a terminating end; and a complementary second connector including: a stationary housing; a first row of contacts and a second row of contacts secured to the stationary housing; and a movable housing being separate from and movable relative to the stationary housing, the movable housing being secured to one part of the first and second rows of contacts and the stationary housing being secured to another part of the first and second rows of contacts, the one part of the first and second rows of contacts being mateable with the U-shaped mating portions of the two rows of contacts of the first connector.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of an electrical connector assembly in accordance with the present invention;
FIG. 2 is a perspective view of a receptacle connector and a plug connector of the electrical connector assembly;
FIG. 3 is another perspective view of the receptacle connector and the plug connector;
FIG. 4 is an exploded view of the receptacle connector;
FIG. 5 is another exploded view of the receptacle connector;
FIG. 6 is an exploded view of the plug connector;
FIG. 7 is a cross-sectional view of the electrical connector assembly taken along line A-A in FIG. 1;
FIG. 8 is a cross-sectional view of the electrical connector assembly taken along line B-B in FIG. 1;
FIG. 9 shows part of a ground shield of the receptacle connector;
FIG. 10 is a view showing positional relationship between the ground shield and two rows of contacts of the receptacle connector; and
FIG. 11 is another view showing positional relationship between the ground shield and the two rows of contacts.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to FIGS. 1-11, an electrical connector assembly includes a receptacle connector 100 and a complementary plug connector 200. The receptacle connector 100 includes an insulative housing 1 and two rows of contacts 2 secured to the insulative housing 1. Each row of contacts 2 has plural signal contacts 21, ground contacts 22, and power contacts 23. The signal contacts 21 and the ground contacts 22 are alternately arranged; the power contacts 23 are arranged at two outer sides of the signal and ground contacts 21 and 22. The insulative housing 1 has a base 11, a tongue 12, a pair of elongate side walls 13, and a pair of end walls 14, which together define a receiving space 15 for the plug connector 200 to enter. The two rows of contacts 2 are secured to the pair of side walls 13, respectively.
The receptacle connector 100 further has a ground shield 3 secured to the tongue 12 between the side walls 13. The ground shield 3 has a base 34, two rows of contacting portions 31 extending upward from the base 34, and one or more terminating ends 32 extending downward from the base 34. The ground shield 3 further has a pair of mounting portions 33 and corresponding extending portions 35 between the pair of mounting portions 33 and the base 34. The ground shield 3 is unitarily formed of a single piece, preferably stamped and formed from a metal plate. The two rows of contacting portions 31 are in touch with the ground contacts 22 of the two row of contacts 2, respectively.
Referring to FIGS. 2 and 6 in particular, the plug connector 200 includes a stationary housing 201, a movable housing 202 separate from the stationary housing 201, and two rows of contacts 203 secured between the stationary housing 201 and the movable housing 202 so that the movable housing 202 is movable relative to the stationary housing 201. The plug connector 200 may further have a pair of retainers 204. When the receptacle connector 100 and the plug connector 200 are mated, each contact 2 is in touch with a corresponding contact 203.
Referring to FIGS. 7 and 8 in particular, the tongue 12 has a pair of opposite side surfaces facing the contacts 2 and exposing the two rows of contacting portions 31. Each contact 2 has a fixed portion 24, a U-shaped mating portion 25, and a connecting portion 27 between the fixed portion 24 and the U-shaped mating portion 25. Each contact 2 further has a terminating end 26 and a connecting portion 27 between the terminating end 26 and the U-shaped mating portion 25. The U-shaped mating portion 25 has a first arm 251, a second arm 252, and a connecting arm 253. The signal contact 21 and the ground contact 22 are of same structure.
Referring to FIG. 7 in particular, when the receptacle connector 100 and the plug connector 200 are mated, the first arm 251 of the U-shaped mating portion 25 of the ground contact 22 contacts both the contact 203 and the contacting portion 31 of the ground shield 3. At this position, an aligned first arm 251 of the U-shaped mating portion 25 of the signal contact 21 on the other row may contact both the contact 203 and the tongue 12 instead of the contacting portion 31 of the ground shield 3. This is so because one row of the contacting portions 31 and the other row of the contacting portions 31 are staggered.
The terminating end 32 of the ground shield 3 and the terminating end 26 of the ground contact 22 extend outwardly of the insulative housing 1 for connecting to an external printed circuit board. The grounding path through a contacting point 311 of the contacting portion 31 of the ground shield 3 is shorter than that through the U-shaped mating portion 25 and the terminating end 26.
Referring to FIG. 9 in particular, the contacting portion 31 of the ground shield 3 includes a lower portion having a width S2 and an upper portion having a width S1 which is less than the width S2 for ease of manufacturing.
Referring to FIG. 10 in particular, of the two rows of contacts 2, the ground contacts 22 of a first row of contacts 28 are in touch with the contacting portions 31 of a first row and the ground contacts 22 of a second row of contacts 29 are in touch with the contacting portions 31 of a second row. Each signal contact 21 of the first row of contacts 28 aligns with a corresponding ground contact 22 of the second row of contacts 29. In each row of contacts 28 or 29, the ground contacts 22 are arranged in pairs 221 and the signal contacts 21 are arranged in pairs 211, respectively. A dimension S3 of the contacting portion 31 is greater than a dimension S4 between outer edges of an associated ground contact pair 221 for better shielding effect. Referring to FIG. 11 in particular, an upper edge of the contacting portion 31 is leveled higher than an upper end of the ground contact 22 for better shielding effect.
Patent Application
20240396270
