The present invention refers to a coaxial cable connector, especially, to a connector in which the terminals of the terminal seat are placed into the housing by insert molding.
Science and technology change with each passing day, the change of product design is inconceivable more and more, but the change still has a tendency, and the key tendency in size is that the weight must be more light, the thickness must be more thin, the length must be more short, the size must be more small, but along with the function is diversified and the structure is complicated the four key points are hard to achieve more and more. In the communication industry, the coaxial connector is used commonly in mobile phones, but the new generation mobile phone is not thicker than multi-centimeter, therefore various connectors used therein are forced to miniaturize, consequently the design structures of which have great varieties.
A disclosed coaxial connector, such as a Chinese patent number 01,125,198.0, includes a first resin member, a second resin member, a fixed terminal, a moveable terminal and an external terminal, the first resin member has a concave portion into which the center contact of a mating coaxial connector is inserted, the second resin member together with the first resin member form into an insulating case, the fixed terminal and the moveable terminal are sandwiched between the first and the second resin members. In order for the fixed terminal and the moveable terminal achieve a perfect location effect between the first and the second resin members, the fixed terminal the moveable terminal have half-circular concavities for holding the ribs on one of the resin member, then each rib is welding-fixed by the head chip of a welding device into a dome shape so as to hold the fixed terminal and moveable terminal, the other resin member has invert dome-shaped recess corresponding to the dome shape so as for the first and the second resin members inter-engaged correspondingly, although this kind of structure and assembly mode increase fixing precision when the fixed terminal and the moveable terminal are placed between the first and the second resin members, but also increase the process and time for manufacture and assembly, in fact, the rib of the resin member is welding-fixed by the head chip, if the terminals shift, even though the slightest shift, after soldering-fixed, the melted material deformed thermally by the had chip has fixed the terminal obliquely, this also results in the not-good-rate increasing.
Because the coaxial connector is very small in size, the flux contained in the soldering paste would be sucked into the first and the second resin members because of siphon phenomenon when soldering, although the coaxial connector has a groove having a V-shaped cross section on the resin member to prevent the flux contained in the soldering paste from permeating into the insulating case, but this kind of connector is very small in size, therefore the flux contained in the soldering paste is hard to be prevented from permeating into the insulating case completely.
Furthermore, the external terminal fastens the insulating case by the legs on the four corners thereof, i.e. the connector must control the precision of bending the four corners, and the connector is connected to the PCB with four corners, which is easy to result in ill efficiency in plane degree.
The main object of the present invention is to provide a coaxial cable connector including a terminal seat formed by insert molding, so as to avoid resulting in terminal poor connection due to siphon phenomenon of the soldering paste during soldering.
Another object of the present invention is to provide a coaxial cable connector including a terminal seat formed by insert molding, which could control the position of each terminal precisely.
A further object of the present invention is to provide a coaxial cable connector including a terminal seat formed by insert molding, which could achieve a perfect plane degree through the holding portions on the two sides of the metal shell.
Hence, a coaxial cable connector in the present invention includes a metal shell, an insulating member, a terminal seat and an under cover. The upper side of the insulating member has a cylinder, the center of the cylinder has an insertion hole passing through the insulating member up and down; the base plate of the metal shell has a circular through hole extending upward a connecting portion for containing the insulating member; the terminal seat consists of a housing, a moveable terminal and a fixed terminal, the moveable terminal and the fixed terminal are positioned in the housing by insert molding, the center of the housing has a retaining chamber passing through up and down, the moveable terminal and the fixed terminal each has an extending portion projecting from the lateral sides of the housing respectively, the extending portion is bent into a soldering portion for soldered with the PCB, the moveable terminal and the fixed terminal stretch into the retaining chamber on the other end of the extending portion thereof respectively, the under cover is sheltered on the opening the containing chamber formed on the bottom of the housing.
Therein, the insulating member has a chassis on the lower side of the cylinder, the upper side of the retaining chamber on the terminal seat has a retaining room corresponding to the chassis above mentioned, the base plate of the metal shell is bent downward into a holding portions at appropriate positions on the two sides of the terminal seat, the holding portions are bent inward into abutting portions, the insulating member is placed on the upper side of the terminal seat, the holding portions of the metal shell are covered around the terminal seat and the under cover.
In assembly of the present invention, the under cover and the terminal seat are combined with the insulating member, then the foregoing combined body is held by the metal shell only, and the under cover, the terminal seat, the insulating member and the metal shell could be manufactured in the form of carrier strips respectively, each carrier strip has a plurality of under covers or terminal seats or insulating members or metal shells and components so on respectively, then the assembly is carried out in the form of carrier strips, later the finished products are cut off the carrier strips, in this way a plurality of finished products are accomplished only at one time, to achieve the producing process in which multi-group of connectors are manufactured jointly.
In order for those skilled in the arts could be more apparent with the structure and technique characteristics of the present invention, a preferred embodiment is described in detail hereafter with drawings.
Please refer to
Therein, the insulating member 2 has a chassis 21 on the lower side of the cylinder 22, the upper side of the retaining chamber 311 on the terminal seat 31 has a first retaining room 314 corresponding to the chassis 21 above mentioned, so as the chassis 21 of the insulating member 2 could be placed onto the first retaining room 314 of the terminal seat 2, the base plate 11 of the metal shell 1 is bent downward into a holding portions 111 at appropriate positions of the two lateral sides of the terminal seat 3, the holding portion 111 is bent inward into an abutting portion 112, just like this, the insulating member 2 is placed on the upper side of the terminal seat 3, the holding portion 111 of the metal shell 1 is covered around the terminal seat 3 and the under cover 4, in the present invention, the chassis 21 of the insulating member 2 is circular, the chassis 21 is further cut out vertical sections 211 adjacent to the lateral sides of the terminal seat 3, the vertical sections 211 are used for discriminating direction in assembly and to avoid the metal shell 1 from clasping the chassis 21 of the insulating housing 2 when the holding portions 111 are bent.
The terminal seat 3 further has at least a locating protrusion 312 on an appropriate position of the top side of the housing 31, and the metal shell 1 has at least a locating recess 113 the number of which is identical to that of the locating protrusion 312 above mentioned on an appropriate position of the base plate 11 thereof, the shape of the recess 113 is complementary to that of the locating protrusion 312, so cause the locating recess 113 is adapted to accommodating the locating protrusion 312.
Please refer to
The moveable terminal 32 and the fixed terminal 33 are placed inside the housing 31 by insert molding beforehand, therefore in assembly of the present invention, the under cover 4 and the terminal seat 3 could be combined with the insulating member 2 directly, then the foregoing combined body is held within the metal shell 1 only, please refer to
The structures and embodiment mode disclosed in the present invention are illustrative but not restrictive to the present invention, any modifications made by those known the arts through the description of the invention without departing from the spirit of the present invention are considered as like structures and covered in the claims of the present invention.
Number | Date | Country | Kind |
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093219953 | Dec 2004 | TW | national |