Wedge of a cable connector grounding device

A wedge of a cable connector grounding device includes a body. One side of the body is formed with a spirally conjunct seat inside which a concave spirally conjunct slot is formed. Two concave slots opposite to each other are formed. At the bottom of spirally conjunct slot, a position limiting groove is formed from the concave slots towards the center and a concave camber is formed along the circumferential wall toward the center. A wedge crest line is defined at a section of connection between the concave camber and the position limiting groove. A packing unit is provided and spirally connected to the spirally conjunct slot. The packing unit may be used to tighten the lead wire passing through the position limiting groove for achievement of the longitudinal position limiting. The wedge crest lines are used to wedge the lead wire transversally and tighten the lead wire.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to a wedge of a cable connector grounding device.

2. Description of the Prior Art

With reference toFIG. 1, a 3D view of a conventional cable central connector, the cable connector mainly comprises a body1. One side of the body1is formed with a spirally conjunct seat2inside which a concave tapped hole3is formed. Then, on the circumferential wall of spirally conjunct seat2, two concave slots4opposite to each other are formed axially for a lead wire6of a grounding wire5to pass into. Further, an arc-shaped slot7conjunct to the slots4is formed at the bottom of tapped hole3. Next, a packing seat8is spirally conjunct to the tapped hole3, and a concave arc-shaped slot9is further formed at the bottom of packing seat8.

With reference toFIG. 2, a schematic view illustrating the service of conventional cable central connector, although the conventional cable connector can be wedged to the lead wire6of grounding wire5, the diameter of lead wire6is smaller than that of each of the arc-shaped slots7and9, only points A and B of the lead wire6contact the arc-shaped slots7and9, poor contact being thereby caused. Then, the arc-shaped slot7is a groove of which the surface is flat and smooth, so the resistance resulting from the lead wire6relatively decreases. Further, when being subject to a force and pulled and dragged, the lead wire6glides along the arc-shaped slot7, there being thereby the possibility of poor tightness and clearance. Apparently, the effect of grounding is not achieved. Thus, improvement of the conventional cable central connector is necessarily made.

Consequently, because of the technical defects of described above, the applicant keeps on carving unflaggingly through wholehearted experience and research to develop the present invention, which can effectively improve the defects described above.

SUMMARY OF THE INVENTION

A wedge of a cable connector grounding device according to this invention comprises a body. One side of the body is formed with a spirally conjunct seat inside which a concave spirally conjunct slot is formed. Then, on the circumferential wall of spirally conjunct seat, two concave slots opposite to each other are formed. Further, at the bottom of spirally conjunct slot, a position limiting groove is formed from the concave slots towards the center. Next, at the bottom of spirally conjunct slot, a concave camber is formed along the circumferential wall toward the center. A wedge crest line is defined at a section of connection between the concave camber and the position limiting groove. A packing unit is further provided is spirally connected to the spirally conjunct slot.

Thus, the packing unit can be used to tighten the lead wire passing through the position limiting groove for achievement of the longitudinal position limiting. The wedge crest lines are used to wedge the lead wire transversally and further tighten the lead wire.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

With reference toFIGS. 3 and 4shown respectively as a partially exploded 3D view of a cable connector according to this invention and as a top view of a spirally conjunct seat, this invention mainly comprises a body10and a packing unit20.

The body10is provided with two male joints11connected to each other, and the male joints11can be spirally conjunct to female joints110of two cables100. One side of the body10is formed with a spirally conjunct seat12. A concave spirally conjunct slot121is formed in the spirally conjunct seat12and a circumferential wall122is defined around the circumference of spirally conjunct slot121. The circumferential wall122is lengthways formed with two concave slots123opposite to each other are formed into which a lead wire210of a grounding wire200passes. Further, the bottom of spirally conjunct slot121is formed with a concave position limiting groove124toward the center of each of the slots121, and the position limiting groove124is generally a V-formed groove and brings to an end from the circumference of each of the slots123toward the center of spirally conjunct seat12. Next, at the bottom of spirally conjunct slot121, a concave camber125is formed along the circumferential wall122. Each of the concave cambers125is generally in the form of a conic surface and is depressed by degree from the edge of inner side of the circumferential wall122toward the center of spirally conjunct seat12. A wedge crest line126is defined at a section of connection between the concave camber125and the position limiting groove124. Each of the wedge crest lines126brings to an end from the inner side of circumferential wall122, slanting toward the center of spirally conjunct seat12. Besides, the center of bottom of the spirally conjunct slot121is formed with a concave container chamber127.

With reference toFIG. 5, the packing unit20comprises a locking screw nut21and a packing block22oppositely wedged into the locking screw nut21. The locking screw nut21can be spirally conjunct to the spirally conjunct slot121and the packing block22can be used to push down the lead wire210. The packing block22is formed with a concave slot221opposite to one side of the bottom of spirally conjunct slot121. The direction of concave slot221is identical to that of position limiting groove124.

With reference toFIGS. 6 and 7shown respectively as schematic views illustrating a first service state and a second service state of this invention clipping a big lead wire, when a clipping diameter is larger than that of lead wire210, the lead wire210must be made to pass through the position limiting groove124from the slots123. With the locking screw nut21spirally conjunct to the spirally conjunct slot121, the packing block22can be further driven downwards by locking screw nut21to push down the top of lead wire210and limit the lead wire210lengthways to the position between the concave slot221and the position limiting groove124. Further, the wedging crest lines126are used to generate a transversal wedging force applied to the lead wire210between the slots123, which thereby prevents the lead wire210from being loose.

With reference toFIGS. 8 and 9shown respectively as schematic views illustrating a first service state and a second service state of this invention clipping a small lead wire, when the clipping diameter is smaller than that of lead wire210, the packing block22is also used to limit the lead wire210lengthways to the position between the concave slot221and the position limiting groove124and the wedging crest lines126are used to generate the transversal wedging force applied to the lead wire210. Besides, when the lead wire210is repressed by the packing block22, the lead wire210is bent in a determined degree and sunken in the container chamber127, an transversal wedging force being thereby applied increasingly to the lead wire210.