Abstract:
A connector for a cable contains a connecting sleeve, an internal tube, an inner fitting member, an outer fitting member, a sheath member, and a circular paw piece, wherein the inner fitting member, the outer fitting member, and the sheath member are made of plastic material, so that the connector is assembled easily and conveniently without using an auxiliary tool, and can lower production cost and time.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a connector for a cable that is assembled easily and conveniently. 
     2. Description of the Prior Art 
     Cable is used to transmit image or electronic signal/data, and includes a joint disposed on a connecting end thereof to be fixed to an entry of an electronic device. 
     Conventional joint for the cable is comprised of a plurality of separated connecting components, and the connecting components are made of metal material. Therefore, the components of the joint can not be assembled easily because of high metal hardness, and they have to be assembled together by using an auxiliary tool. Besides, the components are made of metal material to enhance production cost. 
     The present invention has arisen to mitigate and/or obviate the afore-described disadvantages. 
     SUMMARY OF THE INVENTION 
     The primary object of the present invention is to provide a connector for a cable that is assembled easily and conveniently without using an auxiliary tool. 
     Another object of the present invention is to provide a connector for a cable that is made of plastic material to lower production cost and time. 
     To obtain the above objectives, a connector for a cable provided by the present invention comprises 
     a connecting sleeve formed in an annular tube shape, and including threads formed around an inner wall of a first opening of an upper end thereof, and including a shoulder extending around a bottom end of an inner wall thereof; 
     an internal tube fitted to the connecting sleeve and formed in a hollowly elongated tube shape to insert a core segment of the cable, and including an arresting ring extending outward around an upper end thereof to abut against the shoulder of the connecting sleeve, and including a circular groove arranged around an outer wall thereof; 
     an inner fitting member being a hollow housing, and including an orifice formed on a bottom end of a fifth opening thereof, and including a hole disposed on a top surface thereof, the hole including a circular projection formed around an inner surface thereof to correspond to the circular groove of the internal tube such that the inner fitting member is fitted to the outer wall of the internal tube by using the hole and further enable to rotate the connecting sleeve, the inner fitting member also including at least one curved recess formed on an upper end of an outer wall thereof, the recess becoming concaved upward to downward from the upper end of the inner fitting member, and after bending toward one side of the inner fitting member and extending downward, and the inner fitting member further including an insertion extending from a bottom end thereof; 
     an outer fitting member being a hollow housing and including two ends, each having a second opening, to be fitted to the inner fitting member, and including a protrusion extending from an inner rim of the second opening of a top end thereof in response to the recess of the inner fitting member, and including a first fixing section disposed on a bottom end thereof; 
     a sheath member being flexible and formed in a tube shape, and including two ends, each having a third opening, including a bore mounted on an upper end thereof, and the bore including a waterproof member extending from an inner surface thereof and becoming tilted toward a central portion thereof slightly, including an annular cutout formed on an outer surface thereof, the sheath member also including a raised loop, an outer diameter of which is in response to an inner surface of the outer fitting member, the raised loop including a second fixing section arranged on an outer surface thereof to correspond to a retaining trench of the first fixing section of the outer fitting member, including a circularly projected slit disposed on an inner surface thereof to correspond to the annular cutout of the bore; 
     a circular paw piece being a circularly metal ratchet paw and including a plurality of paws arranged thereon to be fixed between the outer fitting member and the raised loop, and the paw being a resilient metal element and tilting forward lightly. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view showing the assembly of a connector for a cable according to a preferred embodiment of the present invention; 
         FIG. 2  is a perspective view showing the exploded components of the connector for the cable according to the preferred embodiment of the present invention; 
         FIG. 3  is a cross sectional view showing of the assembly of a fixed cable according to the preferred embodiment of the present invention; 
         FIG. 4  is a perspective view showing the cross section of the fixed cable according to the preferred embodiment of the present invention; 
         FIG. 5  is a cross sectional view showing of the assembly of an unfixed cable according to the preferred embodiment of the present invention; 
         FIG. 6  is a cross sectional view showing a part of the fixed cable according to the preferred embodiment of the present invention. 
         FIG. 6A  is an amplified cross sectional view showing a part of the fixed cable according to the preferred embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment in accordance with the present invention. 
     Referring to  FIGS. 1-6  and  6 A, a connector for a cable in accordance with a preferred embodiment of the present invention includes a connecting sleeve  10 , an internal tube  20 , an inner fitting member  30 , an outer fitting member  40 , a sheath member  50 , and a circular paw piece  60 , wherein the inner fitting member  30 , the outer fitting member  40 , and the sheath member  50  are made of plastic material. 
     The connecting sleeve  10  is formed in an annular tube shape, and includes threads  11  formed around an inner wall of a first opening of an upper end thereof to be screwed to the connector of an electronic device, and includes a shoulder  12  extending around a bottom end of an inner wall thereof, and includes a locking section  13  mounted on an outer wall thereof and formed in a hexagon shape to correspond to an allen wrench. 
     The internal tube  20  is fitted to the connecting sleeve  10  and formed in a hollowly elongated tube shape to insert a core segment of the cable, and includes an arresting ring  21  extending outward around an upper end thereof to abut against the shoulder  12  of the connecting sleeve  10  so as to prevent the connecting sleeve  10  from sliding out of the internal tube  20 , and includes a circular groove  22  arranged around an outer wall thereof. 
     The inner fitting member  30  is a hollow housing, and includes an orifice formed on a bottom end of a fifth opening thereof, and includes a hole  31  disposed on a top surface thereof, the hole  31  includes a circular projection  311  formed around an inner surface thereof to correspond to the circular groove  22  of the internal tube  20  such that the inner fitting member  30  is fitted to the outer wall of the internal tube  20  by using the hole  31  and further enable to rotate the connecting sleeve  10 . The inner fitting member  30  also includes at least one curved recess  32  formed on an upper end of an outer wall thereof, and the recess  32  becomes concaved upward to downward from the upper end of the inner fitting member  30  and the recess  32  bends toward one side of the inner fitting member  30  and extends downward, and the inner fitting member  30  further includes an insertion  35  extending from a bottom end thereof; 
     the inner fitting member  30  further includes an annular slot  33  formed on a lower section of an external surface thereof, and the annular slot  33  includes a washer  34  fitted thereon. 
     The outer fitting member  40  is a hollow housing and includes two ends, each having a second opening, to be fitted to the inner fitting member  30 , and includes a protrusion  41  extending from an inner rim of the second opening of a top end thereof in response to the recess  32  of the inner fitting member  30  so that the protrusion  41  is fixed in the recess  32  to slide, and includes a first fixing section  42  disposed on a bottom end thereof, the first fixing section  42  is at least one retaining trench  421  and at least one concavely circular member  422 . 
     The sheath member  50  is flexible and formed in a tube shape, and includes two ends, each having a third opening, includes a bore  51  mounted on an upper end thereof. The bore  51  includes a waterproof member  511  extending from an inner surface thereof and becoming tilted toward a central portion thereof slightly, includes an annular cutout  512  formed on an outer surface thereof. The sheath member  50  also includes a circular rib  52  fixed thereon to correspond to the concavely circular member  422  of the outer fitting member  40 , and includes a raised loop  53 , an outer diameter of which is in response to an inner surface of the outer fitting member  40 . The raised loop  53  is formed in a tube shape and includes two ends, each having a fourth opening, includes a second fixing section  54  arranged on an outer surface thereof to correspond to the retaining trench  421  of the first fixing section  42  of the outer fitting member  40 , includes a circularly projected slit  531  disposed on an inner surface thereof to correspond to the annular cutout  512  of the bore  51 . In this embodiment, the sheath member  50  is an engaging block to correspond to the retaining trench, to be retained by the retaining trench securely. 
     The circular paw piece  60  is a circularly metal ratchet paw and includes a plurality of paws  61  arranged thereon to be fixed between the outer fitting member  40  and the raised loop  53 , and the paw  61  is a resilient metal element and tilts forward lightly. 
     In assembly, the paws  61  of the circular paw piece  60  are expanded to be fitted to the insertion  35  of the inner fitting member  30  securely, and the protrusion  41  of the outer fitting member  40  is placed to a fifth opening above the recess  32  of the inner fitting member  30  to slide from the recess  32 . Thereafter, the prepared cable is inserted from the third opening of a bottom end of the sheath member  50 , and the core segment of the cable is pushed to insert through the internal tube  20 , a jacket of the cable is fitted outside the internal tube  20 . In the meantime, the inner fitting member  30  is rotated relative to the outer fitting member  40  so that the protrusion  41  slides to a bottom end of the recess  32 , and the sheath member  50  is actuated by the outer fitting member  40  to slide downward, the paws  61  of the circular paw piece  60  disengages from the insertion  35  of the inner fitting member  30 , hence the paws  61  engages with the jacket of the cable securely. 
     While we have shown and described various embodiments in accordance with the present invention, it is clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.