1. Field of the Invention
The present invention relates to electrical connectors, and more particularly to electrical connectors with a detect terminal.
2. Description of Related Art
Electrical connectors are employed widely in computers, audio equipment, video equipment and other electrical components to enable the connection of one such component to another. Generally, the electrical connectors comprise a plurality of terminals which are mounted in an insulative housing. Such electrical connectors may be mounted to a circuit board of an electrical component, with the terminals being electrically connected to conductive areas on the circuit board. A mating plug may then be connected with the electrical connector to transmit signals to the electrical connector.
U.S. Pat. No. 5,035,651 discloses such an electrical connector which is provided for mounting to a circuit board. The electrical connector comprises an insulative housing having a front face and a rear face opposite to the front face. The insulative housing includes an annular recess extending from the front face and a cylindrical portion disposed within the annular recess. The cylindrical portion defines a plurality of passageways extending therethrough for receiving a plurality of corresponding signal contacts. The cylindrical portion and the insulative housing each defines a rectangular groove communicated with the annular recess to mate with a protrusion of the mating plug. The protrusion can be projected outwardly or inwardly to avoid an improper insertion of the mating plug. An outer shield encloses three side walls of the insulative housing. An inner shield is received in the annular recess. A plurality of contacts retained in the insulative housing and each contact has a contact portion retained in the passageways and a soldering portion to connect with the circuit board.
In view of the above, the electrical connector just has a plurality of contacts to connect with corresponding contacts of the mating plug. Thereby when the mating plug mates with the electrical connector, a system can not identify whether the mating plug has inserted or not, and can not know whether the electrical connector works natural or not. It will bring a great inconvenience to users.
Hence, an electrical connector with a detect component is needed to solve the problem above.
According to one aspect of the present invention, an electrical connector for mating with a plug includes an insulative housing comprising opposed front and rear faces. The insulative housing includes an annular recess extending from the front face and a cylindrical portion disposed within the annular recess. The cylindrical portion defines a plurality of passageways extending therethrough and a rectangular groove communicated with the annular recess. An internal shield received in the annular recess and comprises a slot generally aligned with the groove and a cutout staggered with the groove. A plurality of contacts retained in the insulative housing, each contact comprises a contact portion extending into the passageway. A detect terminal retained in the insulative housing and comprises a detective portion extending into the cutout and a soldering portion extending out of the insulative housing.
According to another aspect of the present invention, an electrical connector comprises an insulative housing having opposed front and rear faces. The insulative housing has an annular recess extending from the front face and a cylindrical portion disposed within the annular recess. The cylindrical portion defines a plurality of passageways extending therethrough and a rectangular groove communicated with the annular recess. A plurality of contacts retained in the insulative housing and each comprises a contact portion extending into the passageway. A detect terminal retained in the insulative housing and comprises a detective portion extending into the annular recess and staggered with the groove of the insulative housing, and a soldering portion extending out of the insulative housing.
The foregoing has outlined rather broadly the features and technical advantages of the present invention in order that the detailed description of the invention that follows may be better understood. Additional features and advantages of the invention will be described hereinafter which form the subject of the claims of the invention.
For a more complete understanding of the present invention, and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which:
In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention. However, it will be obvious to those skilled in the art that the present invention may be practiced without such specific details. In other instances, well-known circuits have been shown in block diagram form in order not to obscure the present invention in unnecessary detail. For the most part, details concerning timing considerations and the like have been omitted inasmuch as such details are not necessary to obtain a complete understanding of the present invention and are within the skills of persons of ordinary skill in the relevant art.
Referring to
Referring to
The insulative housing 2 includes an upper interface and a lower interface arranged along an up to down direction. The upper interface comprises a columnar projection 23 projecting from the front face 20. The columnar projection 23 defines a receiving space 230 to receive a corresponding plug (not shown). The insulative housing 2 defines a passageway 210 communicated with the receiving space 230. The columnar projection 23 has a plurality of embosses 231 to engage with the sleeve 6 at a rear end. The insulative housing 2 has an annular depression 24 around the columnar projection 23 and an aperture 241 running through the insulative housing 2 below the columnar projection 23. The ring 7 affixes to a front end of the columnar projection 23. The sleeve 6 encloses the columnar projection 23 and has an opening (not labeled) corresponding to the receiving space 20. The sleeve 6 has a flange 61 assembled in the depression 24 at a rear end and a retaining portion 62 extending backwardly to engage with the aperture 241.
The lower interface defines an annular recess 25 extending from the front face 20 to receive another corresponding plug 10 and the external shield 8. A cylindrical portion 26 is disposed in the annular recess 25 and defines a plurality of passageways 261 extending therethrough and a rectangular groove 262 communicated with the annular recess 25. The annular recess 25 includes a first part 251 aligned with the groove 262 and a second part 252 besides the first part 251. The second part 252 is staggered with the groove 262. The insulative housing 2 defines a hollow 27 communicated with the annular recess 25 and aligned with the first part 251. The hollow 27 is higher than the annular recess 25. The insulative housing 2 defines a retaining cavity 211 communicated with the annular recess 25 to fasten the detect terminal 4.
The contacts 3 comprise a first contact 31 and a grounding contact 33 retained in the upper interface, and a plurality of second contacts 32 retained in the lower interface. The first contact 31 has a contact portion 310 extending into the passageway 210 to connect with the corresponding plug (not shown), a securing portion 311 retained in the insulative housing 2 and a soldering portion 312 to connect with a circuit board (not shown). The grounding contact 33 has a contact portion 330 extending into the aperture 241 to connect with the retaining portion 62 of the sleeve 6, a securing portion 331 retained in the insulative housing 2 and a soldering portion 332 connected with the circuit board. Each second contact 32 has a contact portion 320 extending into the passageways 261 to connect with the plug 10, a securing portion 321 retained in the passageways 261 and a soldering portion 322 extending out of the insulative housing 2 to connect with the circuit board (not shown).
The detect terminal 4 has a horizontal portion 41 affixed to the rear face 21 and extending along a transverse direction of the insulative housing 2, a securing portion 43 extending from one end of the horizontal portion 41, a detective portion 42 extending into the second part 252 of the annular recess 25 from the securing portion 43 and a soldering portion 44 extending out of the insulative housing 2 from the other end of the horizontal portion 41. The detective portion 42 is staggered with the groove 262 of the cylindrical portion 26.
The external shield 5 has a mating face 50 covering the front face 20 and a plurality of openings 501 corresponding to the upper and lower interfaces and the through hole 222. The external shield 5 defines a plurality of mounting holes 51 engaging with the protrusions 223 of the insulative housing 2. The external shield 5 further includes a grounding leg 52 to connect with the circuit board. The internal shield 8 is received in the annular recess 25 and surrounds the cylindrical portion 26. The internal shield 8 presents as an annular shape. A plurality of locking tangs 81 are formed on the internal shield 8 to interfere with the insulative housing 2. The internal shield 8 defines a slot 82 generally aligned with the groove 262 and a cutout 83 staggered with the groove 262. The slot 82 extends through the internal shield 8. The cutout 83 is adjacent to the slot 82 and communicates with the slot 82. The detective portion 42 of the detect terminal 4 is received in the cutout 83 as shown in
Referring to
According to the present invention, the electrical connector 1 disposes a detect terminal 4 additionally. Therefore, when the plug 10 inserts into the electrical connector 1, the detect terminal 4 contacts the plug 10 and transmit the signal to the circuit board for making sure the plug 10 connected with the electrical connector 1 steadily. In the present invention, the detective portion 42 of the detect terminal 4 is disposed in the second part 252 of the annular recess 25 and staggered with the protrusion of said two kinds of the plug. The detective portion 42 contacts the other part except the protrusion of the plug. So the detect terminal 4 can not contact the protrusion of the plug when the detect terminal 4 connects with the plug 10 with the protrusion 100 projecting outwardly. The detective portion 42 of the detect terminal 4 can not be resisted fiercely by the protrusion 100 and make the elasticity break-down after a longtime mating cycles with the plug 10. When the detect terminal 4 connects with the plug with the protrusion projecting inwardly, the detective portion 42 of the detect terminal 4 can contact the plug steadily too. The detective portion 42 of the detect terminal 4 can just move in a range of the second part 252, the elasticity of the detect terminal 4 performs perfectly and can not break down.
It is to be understood, however, that even though numerous, characteristics and advantages of the present invention have been set fourth in the foregoing description, together with details of the structure and function of the invention, the disclosed is illustrative only, and changes may be made in detail, especially in matters of number, 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.
Number | Date | Country | Kind |
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200720035286.2 | Mar 2007 | CN | national |