Connector of coaxial cables

[0001] The present invention relates to a connector of coaxial cable that uses a fastening sleeve to fasten and position the cable without using special tools.

[0002] A conventional connector for coaxial cables generally includes a collar which is securely mounted to the cable by using special tools and the copper core or wire of the cable is extended in the tubular portion of the collar so as to be electrically connected to a jacket of electric appliances. It is noted that it takes a lot of time to secure the collar to the cable and the assemblers have to carefully control the force that is applied to the collar so as not to damage the copper core or wire.

[0003] The present invention intends to provide a connector for an axial cable wherein the cable is easily connected to the collar by using a fastening sleeve which is squeezed by the cooperation of an end piece and a threaded piece so that the assemblers need no special tools to assemble the connectors.

[0004] The present invention relates to a connector for a coaxial cable and the connector comprises a tubular end piece and a fastening sleeve is received in the end piece so as to receive a cable. The fastening sleeve includes a tapered outer periphery. A threaded piece is threadedly connected to the end piece and a tapered inner periphery is defined in an inner periphery of the threaded piece so as to press a thinner portion of the tapered outer periphery and to apply an inward force to the fastening sleeve to secure the cable. A tube has a first end securely extending through the threaded piece and receives a core of the cable. A connection collar is rotatably mounted to the tube and has a connection threaded portion.

[0005] The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.

[0011] Referring to FIGS. 1 to 3, the connector 1 of the present invention comprises a tubular end piece 70 that includes two first flat surfaces 73 defined in an outer periphery thereof and a fastening sleeve 60 is received in the end piece 70. An inner threaded portion 71 is defined in an inner periphery of the end piece 70 and a shoulder 72 is defined in the inner periphery of the end piece 70. An end of the fastening sleeve 60 is in contact with the shoulder 72. The fastening sleeve 60 receives a cable “B” and includes a tapered inner periphery 61 at the other end thereof.

[0012] A threaded piece 50 includes an outer threaded portion 53 defined in an outer periphery thereof and a tapered inner periphery 53 is defined in an inner periphery of the threaded piece 50. The threaded piece 50 includes two second flat surfaces 51 defined in an outer periphery thereof. The outer threaded portion 53 of the threaded piece 50 is threadedly engaged with the inner threaded portion 71 of the end piece 70, and the tapered inner periphery 53 of the threaded piece 50 presses the thinner portion of the tapered inner periphery 61 so as to apply an inward force to squeeze the second end of the fastening sleeve 60 to secure the cable “B”.

[0013] A tube 20 has a first end securely extending through the threaded piece 50 and a core “B1” of the cable “B” extends through the tube 20. A connection collar 40 is rotatably mounted to the tube 20 and has a connection threaded portion 41 which is threadedly connected to a jack “A” of electric appliance. The connection collar 40 includes a flange 43 extending from the inner periphery thereof and the tube 20 includes a lip 22 extending from an outer periphery thereof. The lip 22 is rotatably engaged with the flange 43 so that the connection collar 40 is not disengaged from the tube 20. A first seal 30 is mounted to the tube 20 and sandwiched between the flange 43 of the threaded piece 40 and an end face of the threaded piece 50. The tube 20 further includes an annular protrusion 21 extending from a second end thereof and a second seal 10 is mounted to the annular protrusion 21.

[0014] It is noted that the assemblers need no special tools to secure the cable “B” which is conveniently secured by rotating the threaded part 50 relative to the end piece 70. The assembler can clamp the first flat surfaces 73 by one hand and uses another tool to clamp and rotate the second flat surfaces 51 to easily secure the cable “B”. An identification ring 500 as shown in FIG. 3 can be mounted to the threaded piece 50 to identify the types of the cables “B”. FIG. 4 shows that the two seals 10, 30 can also be omitted for the connector 1.

[0015] FIG. 5 shows that the fastening sleeves 60 can be different sizes so as to secure the cables “B” of different sizes.

[0016] While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.