Patent Application
20120115358
The present invention relates to a terminal structure for coaxial connector, and more particularly to a coaxial connector terminal structure that not only ensures easy and firm assembly of a core of a cable to the terminal structure and accordingly, but also ensures good electric contact between the cable and the coaxial connector.
Generally, a convention coaxial connector includes a signal terminal, an insulating body, and an electrically conducting body. The signal terminal has a welding area and two plate-shaped contacts downward and inward extended from two ends of the welding area to face each other. The signal terminal is provided at a rear end with a pair of vertical posts, such that a recess is formed between the two posts for a core of a coaxial cable to dispose thereon. To assemble the core to the coaxial connector, first weld the core to the welding area on the signal terminal. The signal terminal with the core welded thereto is then disposed in the insulating body, and a pressing cover is downward bent with a tool so as to press against the signal terminal and complete a coaxial connector.
Since the core must be welded to the welding area on the signal terminal, and a tool must be used to downward bend and press the pressing cover against the signal terminal, the procedures for assembling the cable core to the coaxial connector are complicated and a lot of time and labor is consumed. Further, solder spatters and other impurities tend to occur in the process of welding, which would have adverse influence on the electric characteristics of the products. Moreover, when the pressing cover is bent, it is very often the pressing cover is deviated to decrease the good yield and the quality of the products.
It is therefore tried by the inventor to develop an improved terminal structure for coaxial connector, which allows easy assembling of a cable core thereto while ensures good electric contact between the cable and the coaxial connector, so as to overcome the drawbacks in the prior art coaxial connector terminals.
A primary object of the present invention is to provide a terminal structure for coaxial connector that is provided with a first and a second fastening tab for firmly clamping a core of a cable to a terminal main body, so as to provide good electric contact between the cable and the coaxial connector.
To achieve the above and other objects, the terminal structure for coaxial connector according to the present invention includes a terminal main body having a carrier plate and two contacts correspondingly located at two lateral sides of the carrier plate near a first end thereof; a first fastening tab being located at one lateral side of the carrier plate adjacent to an opposite second end of the carrier plate; and a second fastening tab being located at the other lateral side of the carrier plate adjacent to the second end of the carrier plate to correspond to the first fastening tab.
According to an embodiment of the present invention, the terminal main body, the first fastening tab, and the second fastening tab are integrally formed of a metal material, and the carrier plate of the terminal main body is connected at the first end to a material strip.
According to an embodiment of the present invention, the first and the second fastening tab are two diagonally symmetric tabs respectively having a dent formed at one lateral side thereof, allowing the first and second fastening tabs to fitly abut on each other end to end.
According to an embodiment of the present invention, the first and the second fastening tab are bent toward each other to thereby clamp a core of a cable therebetween, bringing the core to firmly assemble to the second end of the carrier plate of the terminal main body; and the terminal main body with the core assembled thereto is then mounted in a plastic base before the plastic base is further mounted in an enclosure of the coaxial connector. The plastic base defines a receiving space slightly smaller than a volume of the terminal main body for tightly receiving the terminal main body therein, and includes an extended section located at an end closer to the first end of the carrier plate. The enclosure includes a bendable cover portion corresponding to the extended section of the plastic base.
With the above arrangements, a core of a cable can be easily and firmly assembled to the terminal structure of the present invention simply by bending the first and the second fastening tab inward for them to abut on each other end to end, and a good electric contact between the cable and the coaxial connector can be ensured.
The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein
The present invention will now be described in more details with a preferred embodiment thereof and with reference to the accompanying drawings.
Please refer to
The terminal main body 1 includes a carrier plate 11, and two contacts 12 separately located at two lateral sides of the carrier plate 11 near a first end thereof and correspondingly bent toward one face of the carrier plate 11.
The first fastening tab 2 is located at one lateral side of the carrier plate 11 adjacent to an opposite second end of the carrier plate 11; and the first end of the carrier plate 11 is connected to a material strip 4.
The second fastening tab 3 is located at the other lateral side of the carrier plate 11 adjacent to the second end of the carrier plate 11 to correspond to the first fastening tab 2. The first and the second fastening tab 2, 3 are two diagonally symmetric tabs respectively having a dent 21, 31 formed at one lateral side thereof, such that the first and second fastening tabs 2, 3 can be bent to fitly abut on each other end to end.
Please refer to
Then, cut the first end of the carrier plate 11 to separate the terminal main body 1 of the terminal structure from the material strip 4, and mount a subassembly of the terminal main body 1 and the core 51 in a plastic base 6. The plastic base 6 defines a receiving space 61 for receiving the terminal main body 1 therein, and includes an extended section 62 located at an end of the plastic base 6 closer to the first end of the carrier plate 11. The receiving space 61 is slightly smaller than a volume of the terminal main body 1. Due to an elasticity of the plastic base 6, the receiving space 61 can be slightly expanded to allow setting of the terminal main body 1 in the receiving space 61 before the latter is elastically restored to tightly fit around the terminal main body 1. Thereafter, dispose the plastic base 6 along with the terminal main body 1 and the cable 5 in an enclosure 7 of the coaxial connector. Finally, bend a cover portion 71 of the enclosure 7 toward the plastic base 6 to clamp on an outer sheath of the cable 5. At this point, the bent cover portion 71 of the enclosure 7 would also force the extended section 62 of the plastic base 6 downward to press against the terminal main body 1, so that the extended section 62 of the plastic base 6 not only forms an insulating structure between the terminal main body 1 and the enclosure 7, but also exerts pressure on the terminal main body 1 for the latter to more firmly associate with the whole plastic base 6 and complete the coaxial connector for connecting to a desired electronic apparatus. An end of the cable 5 opposite to the coaxial connector can be connected to, for example, an antenna module (not shown). The contacts 12 on the terminal main body 1 can cooperate with the cable 5 to enable transmission of electric signals. Since the terminal main body 1 and the core 51 can be firmly connected to each other via the first and the second fastening tab 2 and 3, the completed coaxial connector in use can ensure good electric characteristics thereof.
In the present invention, the first and the second fastening tab are designed to be diagonally symmetrical to each other and can therefore be fully fitly abutted on each other end to end, bringing the core of the cable to be easily and firmly assembled to the terminal main body to ensure good electric contact and signal transmission. It is expected products derived from the present invention would no doubt satisfy the current market demands. Therefore, with the above arrangements, the terminal structure for coaxial connector according to the present invention is novel, improved and industrially useful.
The present invention has been described with a preferred embodiment thereof and it is understood that many changes and modifications in the described embodiment can be carried out without departing from the scope and the spirit of the invention that is intended to be limited only by the appended claims.
