BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention generally relates to the art of electrical connectors and more particularly to an electrical connector for receiving an electrical plug.
2. Description of Related Art
A conventional electrical connector for receiving an electrical plug in a front-to-rear direction are often mounted on a printed circuit board (PCB) for use in a variety of electronic equipment such as telecommunications equipment, computers and the like. Such electrical connector usually comprises an insulative housing, a plurality of terminals coupled thereto, and a shell shielding the insulative housing. The terminals are stamped and formed of conductive sheet metal materials. The terminal has a vertical flat base portion retained in the insulative housing and extending along the front-to-rear direction, a tail portion extending from a lower edge of the base portion to be mounted on the PCB, and a contacting portion extending from an upper edge of the base portion to electrical contact with the electrical plug.
However, the contacting portion and the tail portion extending from different edges of the base portion will increase the width in a height direction of the sheet metal materials which stamp out the terminals, and the material costs will be increased.
Hence, an improvement over the prior art is required to overcome the problems thereof.
SUMMARY OF THE INVENTION
According to one aspect of the present invention, an electrical connector for insertion of an electrical plug, comprises an insulative housing having a receiving cavity to receive the electrical plug in a front-to-rear direction and a plurality of receiving slots communicating with the receiving cavity, and a plurality of terminals received in the receiving slots and including first terminals. Each first terminal has a vertical flat first base portion retained in the insulative housing and extending along the front-to-rear direction, a first contacting portion protruding into the receiving cavity to electrical contact with the electrical plug, and a first tail portion to be mounted on a printed circuit board (PCB). Both the first contacting portion and the first tail portion simultaneously extend from one of an upper edge and lower edge of the first base portion.
According to another aspect of the present invention, an electrical connector for insertion of an electrical plug comprises an insulative housing having a main body, a cylindrical mating portion extending forwardly from a front face of the main body, and a receiving cavity formed in the mating portion and the main body for inserting the electrical plug in a front-to-rear direction, a plurality of terminals including a pair of first terminals having vertical flat first base portions retained in two lateral sides of the main body and extending along the front-to-rear direction, first contacting portions extending from lower edges of the respective first base portions and protruding into the receiving cavity to electrical contact with the electrical plug, and first tail portions extending from lower edges of the respective first base portions to be mounted on a printed circuit board (PCB), and a shell shielding the insulative housing.
These and additional objects, features, and advantages of the present invention will become apparent after reading the following detailed description of the preferred embodiment of the invention taken in conjunction with the appended drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of an electrical connector according to the present invention;
FIG. 2 is a cross-sectional view of the electrical connector taken along line 2-2 shown in FIG. 1;
FIG. 3 is a partly exploded view of the electrical connector shown in FIG. 1;
FIG. 4 is an another partly exploded view of the electrical connector shown in FIG. 1;
FIG. 5 is an exploded view of the electrical connector shown in FIG. 1; and
FIG. 6 is an another exploded view of the electrical connector shown in FIG. 1.
DETAILED DESCRIPTION OF THE INVENTION
Reference will now be made to the drawing figures to describe the preferred embodiment of the present invention in detail.
Referring to FIGS. 5 and 6, an electrical connector 100 for insertion of an electrical plug (not shown) and adapted for mounting on a printed circuit board (PCB) according to the present invention, comprises an insulative housing 1, a plurality of terminals 2 retained in the insulative housing 1, a retaining member 3, and a metal shell 4 shielding the insulative housing 1.
Referring to FIGS. 5 and 6, the insulative housing 1 includes a main body 11, a cylindrical mating portion 12 extending forwardly from a front face of the main body 11, and a receiving cavity 13 formed in the mating portion 12 and the main body 11 for inserting the electrical plug in a front-to-rear direction. A gap 16 extends through an upper side of the mating portion 12 and communicates with the receiving cavity 13. The main body 11 has a plurality of receiving slots 14 for receiving the terminals 2 and communicating with the receiving cavity 13, and a groove 17 extending through an upper side and a lower side thereof for receiving the retaining member 3 a pair of retaining slots 15 are formed on each of two lateral sides of the main body 11 and communicate with the receiving slots 14 on the two lateral sides thereof.
Referring to FIGS. 1-6, the terminals 2 include a pair of first terminals 21 retained in the two lateral sides of the main body 11, a second terminal 22 retained in the upper side of the main body 11, a third terminal 23 retained in the lower side of the main body 11, and a pair of switch terminals 24 retained in the main body 11. The first terminals 24 are of similar configuration and are symmetrically received in the receiving slots 14 on the two lateral sides of the main body 11 each first terminal 21 is stamped and formed of conductive sheet metal materials and includes a vertical flat first base portion 212 extending along the front-to-rear direction, a first tail portion 213 extending downwardly from a rear end of a lower edge at the first base portion 212 to be mounted on the PCB, and a first contacting portion 211 extending inwardly and then upwardly from a front end of a lower edge at the first base portion 212. Each first contacting portion 211 defines a convex protrusion 25 protruding into the receiving cavity 13 to contact with the electrical plug. When the electrical plug is inserted into the receiving cavity 13, the convex protrusions 25 of the first contacting portions 211 are symmetrically located at two lateral sides of the electrical plug along a transverse direction perpendicular to the front-to-rear direction. Therefore, the convex protrusions 25 will give the electrical plug a balance force so as to prevent the electrical plug from swinging. The first base portion 212 has a pair of first tooth portions 214 formed on the lower and upper edges thereof respectively to be inserted into the respective retaining slots 15 of the main body 11. The first tooth portions 214 are parallel to each other along a height direction of the insulative housing 1. Therefore, the first terminals 21 could be retained in the insulative housing 1 steadily. Both the first contacting portion 211 and the first tail portion 213 both extend from the lower edge of the first base portion 212. Therefore, a width in a height direction of the sheet metal materials which stamp out the first terminals 21 will be diminished efficiently and the material costs will be decreased. In an alternative embodiment of the present invention, the first contacting portion 211 and the tail portion 213 could both extend from the upper edge of the first base portion 212.
Referring to FIGS. 3, 5 and 6, the second terminal 22 is received in the receiving slot 14 on the upper side of the main body 11 and includes a horizontal flat second base portion 222 extending along the front-to-rear direction, a second contacting portion 221 extending sidewardly from a front end of a side edge at the second base portion 222 and bending forwardly at a proper position, and a second tail portion 223 extending downwardly from a rear end of the second base portion 222 to be mounted on the PCB. The second contacting portion 221 is received in the gap 16 and defines a convex protrusion 25 protruding into the receiving cavity 13 to electrical contact with the electrical plug. The second base portion 222 has a second tooth portion 224 extending downwardly from a front end thereof to be retained in the main body 11. The third terminal 23 is received in the receiving slot 14 on the lower side of the main body 11 and includes vertical flat third base portion 232 extending along a height direction of the main body 11, a third contacting portion 231 bending forwardly from an upper end of the third base portion 232, and a third tail portion 233 extending downwardly from a lower end of the base portion 232 to be mounted on the PCB. The third contacting portion 231 defines a convex protrusion 25 protruding upwardly into the receiving cavity 13 to electrical contact with the electrical plug.
Referring to FIGS. 2, 5 and 6, the switch terminals 24 are received in the receiving slot 14 and include an immovable terminal 241 and an elastic terminal 242. The elastic terminal 242 includes a vertical flat fourth base portion 244 extending along the front-to-rear direction, a fourth contacting portion 243 extending inwardly and backwardly from a front end of the fourth base portion 244, and a fourth tail portion 245 extending downwardly from a rear end of a lower edge at the fourth base portion 244 to be mounted on the PCB. The fourth contacting portion 243 defines an arc portion bowed toward the receiving cavity 13 to electrical contact with the electrical plug. The fourth contacting portion 243 is brought into or out of contacting with the immovable terminal 241 with insertion or extraction of the electrical plug. Therefore, the switch terminals 24 are able to detect the insertion of the electrical plug.
The retaining member 3 is received in the groove 17 and includes a vertical flat retaining portion 31, and a resisting portion 32 extending forwardly from a front end of the retaining portion 31 and protruding into the receiving cavity 13 to press against the electrical plug. The resisting portion 32 has a slit 33 formed thereon and extending along the front-to-rear direction. The slit 33 engages with the electrical plug so as to optimize insertion and extraction force of the electrical plug. When the electrical plug is inserted into the receiving cavity 13, the fourth contacting portion 243 of the elastic terminal 242 and the resisting portion 32 of the retaining member 3 are substantially symmetrically located at two lateral sides of the electrical plug along a transverse direction perpendicular to the front-to-rear direction. Therefore, the fourth contacting portion 243 and the resisting portion 32 also will give the electrical plug a balance force so as to prevent the electrical plug from swinging.
The metal shell 4 shields the main body 11 and has a number of legs 45 to be mounted on the PCB.
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 disclosure 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 broad general meaning of the terms in which the appended claims are expressed.
Patent Grant
8070528
