1. Field of the Invention
The present invention relates to an audio jack connector, and more particularly to an audio jack connector capable of engaging with an audio plug connector steadily.
2. The Related Art
Generally, audio jack connectors are widely used in variety of electronic apparatuses, such as MP3/MP4, mobile phones, computers and other equipments. With fast development of information, communication, photoelectric and consumer electronics industry, most of the electronic apparatuses provide multimedia video and audio functions. So request of the audio jack connector used in the electronic apparatus is higher.
A conventional audio jack connector includes an insulating housing and a plurality of terminals assembled in the insulating housing. The insulating housing defines an insertion hole for receiving an audio plug connector therein. The terminals include a plurality of signal terminals, a ground terminal, and a switch terminal assembly. The ground terminal has a base portion, a contact portion and a soldering portion extended from the base portion. The insulating housing defines a plurality of terminal grooves communicating with the insertion hole. The base portion of the ground terminal is received in one of the terminal grooves with the contact portion stretching into the insertion hole to connect with the audio plug connector and the soldering portion connected with a printed circuit board used in the conventional audio jack connector. The ground terminal has not only a ground function, but also an antenna function that requests the ground terminal to have a lower impedance and higher steadiness. In order to lower the impedance of the ground terminal, a common way of doing that is to increase area of the ground terminal.
However, when the area of the ground terminal is increased, the occupied space of the conventional audio jack connector in the electronic product is increased accordingly. Furthermore, the conventional audio jack connector is fastened in the electronic product inconveniently and unsteadily.
It is an object of the present invention to provide an audio jack connector adapted to be electrically connected with a printed circuit board and engaged with an audio plug connector. The audio jack connector includes an insulating housing, a plurality of signal terminals and a ground terminal. The insulating housing has a top surface, a front surface, a rear surface, a bottom surface and two side surfaces. The insulating housing defines an insertion hole extending along an inserting direction of the audio plug connector to penetrate through the front surface and a fastening groove opened in the top surface. A front of a bottom side of the fastening groove defines a gap communicating with the insertion hole. The signal terminals are disposed at regular intervals between one of the side surfaces and the insertion hole of the insulating housing along the inserting direction of the audio plug connector, and each has one end stretched into the insertion hole to contact the audio plug connector and the other end suspended under the bottom surface of the insulating housing to be connected with the printed circuit board. The ground terminal has a base plate vertically fastened in one side surface of the insulating housing. A bottom edge of the base plate extending sideward and inclined downward to form a soldering arm projected under the bottom surface to be connected with the printed circuit board. A top edge of the base plate bent sideward to form a fastening plate of which a front edge extends forward to form an elastic plate having a front end thereof arched downward to form a contact arm. The fastening plate and the elastic plate are disposed in the fastening groove with the contact arm stretched into the insertion hole through the gap to contact the audio plug connector.
As described above, the signal terminals and the ground terminal are arranged in a periphery portion of the insulating housing to make the audio jack connector have a compact structure and occupy a small space. Furthermore, the design of the ground terminal realizes lower impedance and higher steadiness, and a smaller space of the ground terminal occupying in the insulating housing.
The present invention will be apparent to those skilled in the art by reading the following description of an embodiment thereof, with reference to the attached drawings, in which:
With reference to
With reference to
Referring to
Each side surface 105 has two fastening ribs 18 spaced from each other for consolidating the insulating housing 10 of the audio jack connector 100 so as to increase using life of the audio jack connector 100. The two fastening ribs 18 protruded on one side surface 105 are symmetrical to the other two fastening ribs 18 protruded on the other side surface 105 to make the audio jack connector 100 conveniently and steadily fastened to an electronic product (not shown) for avoiding the audio jack connector 100 falling off the electronic product under an external force.
Referring to
Referring to
Referring to
The first base portion 411 of the first switch terminal 41 is fastened in the second terminal cavity 14 of the insulating housing 10 with a rear end thereof further stretching into the inserting groove 17, the fixing portion 414 fixed in the fixing slot 141 and the inserting portion 412 inserted in a front side of the second terminal cavity 14. The first contact portion 413 of the first switch terminal 41 is received in the second terminal cavity 14 and stretches into the insertion hole 11 with a free end thereof further stretching into the buckling groove 162. The first soldering portion 415 of the first switch terminal 41 is suspended over the corresponding receiving groove 13 of the insulating housing 10. The second base portion 421 of the second switch terminal 42 is disposed in the recess 16 of the insulating housing 10 with the buckling portion 422 buckled in the buckling groove 162 to make the contact point 425 contact with the free end of the first contact portion 413, and the locating portion 423 located in the locating groove 161. The second soldering portion 424 of the second switch terminal 42 is suspended over the corresponding receiving groove 13. Then the audio jack connector 100 is mounted on the printed circuit board 60 with the ends of the signal terminals 30 suspended over the receiving grooves 13, the soldering arm 22 of the ground terminal 20, the first soldering portion 415 of the first switch terminal 41 and the second soldering portion 424 of the second switch terminal 42 soldered on the printed circuit board 60.
With reference to
As described above, the signal terminals 30, the ground terminal 20 and the switch terminal assembly 40 are arranged in a periphery portion of the insulating housing 10 to make the audio jack connector 100 have a compact structure and occupy a small space. Furthermore, the design of the ground terminal 20 realizes lower impedance and higher steadiness, and a smaller space of the ground terminal 20 occupying in the insulating housing 10.
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