Patent Publication Number: US-6712645-B1

Title: Cable fixture of coaxial connector

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a cable connector, more particularly to a cable fixture of a coaxial connector that prevents the cable from being detached or broken while unplugging the connector. 
     2. Description of the Related Art 
     In a general wireless network device, a certain distance is kept between the transmitting circuit and the receiving circuit to avoid the interference between the transmitting signal and the receiving signal that may deteriorate the signals, and a coaxial cable is used for connecting the transmitting circuit and the receiving circuit. 
     Please refer to FIG. 1, A connector  11  disposed on both ends of an coaxial cable  10  is individually plugged into the sockets of the transmission circuit and the receiving circuit, such that the transmission circuit and the receiving circuit are electrically coupled, and said connector  11  comprises a metal housing  13 , an insulator  15 , and a contact terminal  16  at one end of the coaxial cable  10 , wherein said metal housing  13  has a hollow cylindrical section  131 ; said cylindrical section  131  at one end has a covering section  133 ; said covering section  133  has an area larger than that of the cylindrical section  131 ; a wing section  135  is extended outwardly from each side of the metal housing  13 ; said covering section  133  has a wrapping section  136  corresponding to another end of the cylindrical section  131 ; said wrapping section has a plurality of plates symmetrically arranged and disposed thereon; said insulator  15  at a position proximate the center has a penetrating hole  151  for installing the contact terminal  16 , and at one end having an open groove  153  for accommodating the coaxial cable  10 ; said insulator  15  is disposed in said cylindrical section  131  such that when said coaxial cable  10  and contact terminal  16  are installed onto the open groove  153  and the penetrating hole  151  respectively, said covering section  133  is bendable to cover the covering section  133  on the top surface of the cylindrical section  131 , while the wrapping section  136  covers the coaxial cable  10 , and then a wing section  135  of the covering section  133  is bent downward, and the plate member of the wrapping section  136  is bent downward to fix the covering section  133  onto the cylindrical section  131 , and in the meantime, the plate of the wrapping section  136  wraps the coaxial cable  10  and fixes the coaxial cable onto the connector  11 . 
     However, when the connector  11  is unplugged, the stress pulling the connector  11  may easily cause the coaxial cable to separate from the connector  11  or break between the plates of the wrapping section  136 , since the coaxial cable  10  only relies on the plates of the wrapping section  136  to wrap the cable. 
     SUMMARY OF THE INVENTION 
     The primary objective of the present invention is to provide a cable fixture for a coaxial connector, and the fixture comprises a metal housing, said housing having a hollow cylindrical section, and said cylindrical section at one end has an external cover and a circular arc lower cover at the other end; the area of said external cover is larger than that of said lower cover such that when an insulator is placed in the cylindrical section, and a cable with terminals are placed on the lower cover, the external cover is bendable to cover cylindrical section, while the upper section covering the cable. Then, wing sections extended from each side of the external cover is bent downward to press on the upper cover and fix the external cover onto the cylindrical section, and fix the upper cover onto the lower cover. By the arrangement of tightly wrapping the cable with the upper and lower covers, the cable will not come off from the upper cover or break when the connector is unplugged. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiments with reference to the accompanying drawings, in which: 
     FIG. 1 is a perspective diagram of the disassembled parts of a prior art. 
     FIG. 2 is a perspective diagram of the present invention. 
     FIG. 3 is a perspective diagram of the disassembled parts of the present invention. 
     FIG. 4 is a cross-sectional diagram of the present invention. 
     FIG. 5 is a cross-sectional diagram of another embodiment of the present invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Please refer to FIGS. 2 and 3 for the cable fixture for coaxial connector according to this invention, and said connector formed by sheet drawing, comprises a metal housing  30 , said housing  30  being integrally formed and having a hollow cylindrical section  31  such that an insertion end  311  with an external diameter slightly smaller than the cylindrical section  31  being disposed at the bottom of the cylindrical section  31 , and an inwardly concave shoulder section  313  being defined between the top of cylindrical section  31  and the insertion end  311 ; said cylindrical section  31  at one end having an external cover  33 , and an arc-shape lower cover  35  at the other end; the area of said external cover  33  being larger than that of said cylindrical section  31  and having a wing section  331  extended outwardly from each side thereof for fixing onto the corresponding side of the cylindrical section  31 ; an inwardly concave recession  351  being disposed at the center of said lower cover  35 ; an upper cover  36  being disposed at the other end of said external cover  33  corresponding to the cylindrical section  31  and having a wrapping section  361  extended from each side thereof, the area of said upper cover  36  being larger than that of the lower cover  35 , and the area at one end of the adjacent external cover  33  being smaller than the area at the other end. 
     By means of the foregoing components, when an insulator  50  is placed in the cylindrical section  31 , and a cable  60  with a terminal  61  is placed onto the lower cover  35 , the external cover  33  is bendable to cover the cylindrical section  31  while the upper cover  36  covers the coaxial cable  60 , and then said wing sections  331  extended from each side of the external cover  33  are bent downward and presses down on both sides of the cylindrical section  31  to fix the external cover  33  on the cylindrical section  31  and wrap the upper cover  36  onto the lower cover  35  by said wrapping sections  361  extended from each side thereof. Therefore, the cable  60  is tightly wrapped by the upper and lower covers  36 ,  35  and the recession  351  of the lower cover  35 , so that the cable  60  will not fall off from the upper cover  36  or break. 
     Please refer to FIGS. 3 and 4 for the present invention, wherein said terminal  61  is integrally made by sheet drawing, and soldered to one end of said terminal  61 ; a penetrating hole  51  disposed at the center of the insulator  50  for accommodating the terminal  61  and having an open groove  53  at one end for accommodating the cable  60 ; said terminal  61  is installed into the penetrating hole  51  and said cable  60  is installed onto the groove  53 , said insulator  50  is installed in the cylindrical section  31 . 
     Please refer to FIGS. 3 and 4 for the present invention, wherein said connector is inserted into the slot  70  of a circuit board so that the circuit of the circuit board and the cable  60  are electrically coupled; said slot  70  has a cylindrical metal base  71 , and said base  71  at its top has a plurality of circular arc and outwardly protruded contact sections  73 , and at its bottom has a plurality of outwardly extended guiding plates  75 , and said guiding plates  75  are soldered to the circuit of the circuit board; said base  71  has an insulator  77  and a pin  78 , so that when the connector is plugged into said slot  70 , the cylindrical section  31  of said connector will coupled onto the base  71 , and the shoulder section  313  of the cylindrical section  31  presses against the contact section  73  of the base  71  such that the connector will not easily fall apart from the slot  70 . 
     Please refer to FIGS. 3 and 4 for the present invention, wherein the cable  60  is a coaxial cable, and the core conductive wire and terminal  61  are soldered together. 
     In the present invention, the circuit board could be a wireless network card, and the receiving signal circuit and transmission signal circuit of said wireless network card are kept in a certain distance apart to avoid the interference between the transmission signal and the receiving signal that may deteriorate the signals. The receiving signal circuit and transmission signal circuit are connected through the cable  60  for the electric connection. 
     In the present invention, the circuit board could be the circuit board of a mobile phone; the receiving signal circuit and the transmission signal circuit are kept at a specific distance apart to avoid the interference between the transmission signal and the receiving signal that may deteriorate the signals. The receiving signal circuit and transmission signal circuit are connected through the cable  60  for the electric connection. 
     Please refer to FIG. 5 for another preferred embodiment of the present invention. Wherein the cylindrical section  31  at its bottom has a plurality of circular arc and inwardly concave contact ends  315 ; a recession  76  is disposed on the base of the slot  70  at a position corresponsive to the contact end  315 , so that when the connector is plugged into the slot  70 , the cylindrical section  31  of the connector is coupled onto the base  71 , and latched into the recession  76  through the contract end  315 , such that the connector will not fall apart from the slot  70  easily. 
     While the present invention has been described in connection with what is considered the most practical and preferred embodiment, it is understood that the invention is not limited to the disclosed embodiments but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation and equivalent arrangements.