CN103311758A - Radio frequency coaxial cable connector - Google Patents

Abstract

The invention discloses a radio frequency coaxial cable connector, which comprises a shell, an insulator and a center needle, wherein the insulator is arranged in the shell; the center needle is pressed in the insulator; the shell is connected with a rear barrel; a cable clamp is arranged in the rear barrel; and the close-up mode of the cable clamp is in a thread screwing-in mode. When the rear barrel of the cable is clamped to be screwed into the shell, the center conductor of the cable constantly moves to the cutting slot of the center needle in the shell; the rear barrel is screwed in the shell; the clamping of the cable clamp is tightened; the internal diameter of the cable clamp is reduced; the outer conductor of the cable is clamped; meanwhile, the center conductor of the cable is inserted into the center needle; the outer conductor of the cable is clamped by the thread screwing-in mode closing up of the cable clamp; and damage on the cable by welding or crimping is avoided.

Description

The radio frequency coaxial-cable connector

Technical field

The present invention relates to telecommunications and instrumentation table technical field, more specifically relate to a kind of radio frequency coaxial-cable connector.

Background technology

The radio frequency (RF) coaxial connector that connects coaxial cable is not only simple and reliable for structure, be convenient to install, simultaneously reliability, shock resistance are good, machinery and electric property are good, also has water-proof function preferably simultaneously, long service life, and can guarantee that the distortion of coaxial cable signal transmission is minimum, improve the accuracy of signal transmission.

The radio frequency coaxial-cable connector of prior art, center needle and wire rod are to fetch fixedly wire rod inner wire and center needle by the tin wire bond, and the braiding of wire rod or outer conductor all are fixing by the crimping of other external member or welding, easily cause breaking of wire rod loosening.

Summary of the invention

The invention provides a kind of simple in structure, be convenient to assemble, cost is low, serviceability is good radio frequency coaxial-cable connector.

According to an aspect of the present invention, provide a kind of radio frequency coaxial-cable connector, comprise shell, insulator and center needle, be provided with insulator in the shell, center needle is pressed in the insulator, and shell is connected with rear thread sleeve, be provided with wire clamp in the rear thread sleeve, the closing in mode of wire clamp is the thread screw-in.The rear thread sleeve that clamps cable is fashionable to the shell inward turning, the center conductor of the cable constantly profile groove of the center needle in the shell moves, rear thread sleeve tightens in the enclosure, it is tight that the clamping of wire clamp becomes, the internal diameter of wire clamp reduces thereupon, the outer conductor of cable is clamped, and the center conductor of cable also inserts in the center needle simultaneously.The closing in of the thread screw-in by wire clamp clamps the outer conductor of cable, has avoided because the damage that welding or crimping cause cable.

In some embodiments, the center needle afterbody is provided with profile groove, and the afterbody of center needle is relative with rear thread sleeve.

In some embodiments, the other end of shell is connected with preceding swivel nut, and the front end of preceding swivel nut is provided with the silica gel circle.When two radio frequency coaxial-cable connectors connected use, the silica gel circle increased the sealing property between two radio frequency coaxial-cable connectors.

In some embodiments, rear thread sleeve is bolted in shell, is provided with first sealing ring in the rear thread sleeve, and shell and the rear thread sleeve place of being spirally connected are provided with second sealing ring.The effect of first sealing ring is the sealing that increases between radio frequency coaxial-cable connector and the cable.The effect of second sealing ring is the sealing that increases between rear thread sleeve and the shell.

In some embodiments, be provided with snap ring in the preceding swivel nut, snap ring is notched circular, and the silica gel circle is positioned at the outside of snap ring.Swivel nut can freely rotate on shell before snap ring made.

In some embodiments, the material of center needle is brass or phosphor-copper.Brass is softer, and the lathe car is easy to turning when processed, and the unit price of brass is lower, reduces cost; The good springiness of phosphor-copper, slow than brass when the lathe car is processed, the plug long service life.

In some embodiments, the material of insulator is polytetrafluoroethylene.Polytetrafluoroethylene is high temperature resistant, corrosion-resistant, difficult aging, good airproof performance.

In some embodiments, the material of shell is brass.The signal transmission performance of brass is better.

In some embodiments, the material of preceding swivel nut and rear thread sleeve is brass, and preceding swivel nut and rear thread sleeve are provided with coating outward, and coating is followed successively by red copper and ternary alloy three-partalloy from inside to outside.The signal transmission performance of brass is better, and the coating that is followed successively by red copper and ternary alloy three-partalloy also can increase the signal transmission performance of swivel nut.

Description of drawings

Fig. 1 is the structural representation of the radio frequency coaxial-cable connector of an embodiment of the present invention;

Fig. 2 is the structural representation of preceding swivel nut of the radio frequency coaxial-cable connector of an embodiment of the present invention;

Fig. 3 is the structural representation of rear thread sleeve of the radio frequency coaxial-cable connector of an embodiment of the present invention;

Fig. 4 is the structural representation of center needle of the radio frequency coaxial-cable connector of an embodiment of the present invention;

Fig. 5 is the structural representation of insulator of the radio frequency coaxial-cable connector of an embodiment of the present invention;

Fig. 6 is the structural representation of shell of the radio frequency coaxial-cable connector of an embodiment of the present invention;

Fig. 7 is the structural representation of wire clamp of the radio frequency coaxial-cable connector of an embodiment of the present invention;

Fig. 8 is the vertical view of snap ring of the radio frequency coaxial-cable connector of an embodiment of the present invention.

Embodiment

Shown in Fig. 1-7, the invention provides a kind of radio frequency coaxial-cable connector, compriseshell 6,insulator 5 and center needle 2.Be fixed withinsulator 5 onshell 6 inwalls,center needle 2 is put intoinsulator 5 by the mode of extruding.The material ofshell 6 is brass.The signal transmission performance of brass is better.The material ofinsulator 5 is polytetrafluoroethylene.Polytetrafluoroethylene is high temperature resistant, corrosion-resistant, difficult aging, good airproof performance.

Center needle 2 afterbodys are provided with profile groove 21, andwire clamp 8 is set in therear thread sleeve 11 movably, andwire clamp 8 can freely rotate in rear thread sleeve 11.The afterbody ofcenter needle 2 is near wire clamp 8.The closing in mode ofwire clamp 8 is the thread screw-in in the rear thread sleeve 11.Therear thread sleeve 11 that clamps cable is fashionable toshell 6 inward turnings, the cable constantly profile groove 21 of thecenter needle 2 in theshell 6 moves, tighten in therear thread sleeve 11, thefolder tooth 81 ofwire clamp 8 becomes tight, the internal diameter ofwire clamp 8 reduces thereupon, the outer conductor of cable is clamped, and the center conductor of cable also inserts in thecenter needle 2 simultaneously.The closing in of the thread screw-in bywire clamp 8 clamps the outer conductor of cable, has avoided because the damage that welding or crimping cause cable.The material ofcenter needle 2 is brass or phosphor-copper.Brass is softer, and the unit price of brass is lower, reduces cost; The good springiness of phosphor-copper, the plug dynamics is even, long service life.

Swivel nut 1 andrear thread sleeve 11 before the two ends ofshell 6 are respectively equipped with.Precedingswivel nut 1 is riveted onshell 6,swivel nut 1 before theless fore shell 61 of diameter is arranged in the shell 6.Precedingswivel nut 1 is provided withsilica gel circle 3 towards an end ofshell 6, andsilica gel circle 3 is positioned at precedingswivel nut 1 inside, andsilica gel circle 3 is circular.Silicagel circle 3 is enclosed within on thefore shell 61 of shell 6.When two radio frequency coaxial-cable connectors connect use, the sealing property thatsilica gel circle 3 increases between two radio frequency coaxial-cable connectors.Be provided withsnap ring 4 in the precedingswivel nut 1, as shown in Figure 8,snap ring 4 is for being provided with the annulus of a breach, andsilica gel circle 3 is than the front end ofsnap ring 4 more close preceding swivel nuts 1.Swivelnut 1 freely rotated onshell 6 beforesnap ring 4 made.Snapring 4 is parts that connect precedingswivel nut 1 andshell 6, be provided with the groove that is complementary withsnap ring 4 in the precedingswivel nut 1,shell 6 is provided with the groove that is complementary withsnap ring 4, breach on thesnap ring 4 makes and uses tool to press from bothsides snap ring 4 circular when assembling,shell 6 is pressed in theswivel nut 1, snapring 4 links together with precedingswivel nut 1 andshell 6, thereby precedingswivel nut 1 can freely rotate onshell 6.

The rear end ofshell 6 is provided with internal thread, andrear thread sleeve 11 is provided with external screw thread, andrear thread sleeve 11 is bolted in shell 6.Be provided withwire clamp 8 in therear thread sleeve 11, thefolder tooth 81 ofwire clamp 8 is towards shell 6.It is the sealing that increases betweenrear thread sleeve 11 and theshell 6 that the outside ofwire clamp 8 is provided with the effect that second sealing ring, 9, thesecond sealing rings 9 are positioned atshell 6, the second sealing rings 9.It is circular that the male ends place ofrear thread sleeve 11 is provided with first sealing ring, 10, thefirst sealing rings 10, and the effect offirst sealing ring 10 is the sealings that increase between radio frequency coaxial-cable connector and the cable.

The material of precedingswivel nut 1 andrear thread sleeve 11 is brass, is provided with coating outside precedingswivel nut 1 and therear thread sleeve 11, and coating is followed successively by red copper and tin ambrose alloy ternary alloy three-partalloy from inside to outside.The signal transmission performance of brass is better, and the coating that is followed successively by red copper and ternary alloy three-partalloy also can increase the signal transmission performance of swivel nut.

Claims (9)

1. radio frequency coaxial-cable connector, it is characterized in that, comprise shell (6), insulator (5) and center needle (2), be provided with described insulator (5) in the described shell (6), be provided with described center needle (2) in the described insulator (5), described shell (6) is connected with rear thread sleeve (11), is provided with wire clamp (8) in the described rear thread sleeve (11), and the closing in mode of described wire clamp (8) is the thread screw-in.

2. radio frequency coaxial-cable connector according to claim 1 is characterized in that, described center needle (2) afterbody is provided with profile groove, and the afterbody of described center needle (2) is relative with rear thread sleeve (11).

3. radio frequency coaxial-cable connector according to claim 2 is characterized in that, an end of the not connection rear thread sleeve (11) of described shell (6) is connected with preceding swivel nut (1), and the front end of described preceding swivel nut (1) is provided with silica gel circle (3).

4. radio frequency coaxial-cable connector according to claim 3 is characterized in that, is provided with first sealing ring (10) in the described rear thread sleeve (11), and described shell (6) is provided with second sealing ring (9) with the described rear thread sleeve place of being spirally connected.

5. radio frequency coaxial-cable connector according to claim 4 is characterized in that, is provided with snap ring (4) in the described preceding swivel nut (1), and described snap ring (4) is notched circular, and described silica gel circle (3) is positioned at the outside of described snap ring (4).

6. radio frequency coaxial-cable connector according to claim 5 is characterized in that, the material of described center needle (2) is brass or phosphor-copper.

7. radio frequency coaxial-cable connector according to claim 6 is characterized in that, the material of described insulator (5) is polytetrafluoroethylene.

8. radio frequency coaxial-cable connector according to claim 7 is characterized in that, the material of described shell (6) is brass.

9. radio frequency coaxial-cable connector according to claim 8, it is characterized in that, the material of swivel nut (1) and described rear thread sleeve (11) is brass before described, swivel nut (1), described rear thread sleeve (11) and shell (6) all are provided with coating before described, and described coating is followed successively by red copper and ternary alloy three-partalloy from inside to outside.

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