The fast type radio frequency (RF) coaxial connector of inserting for test cable
Technical field
The present invention relates to communication cable and connect technical field, relate in particular to a kind of fast type radio frequency (RF) coaxial connector of inserting for test cable.
Background technology
In mobile communcations system, the application of cable-assembly is very extensive.Cable-assembly is that radio frequency (RF) coaxial connector and applicable coaxial cable connect the coaxial cable connector assembly forming, major function is effectively to transmit radio frequency electromagnetic energy, therefore radio frequency co-axial cable subassembly require in actual use very strict, such as phase place, standing wave, Insertion Loss etc.In the actual course of processing, each link must strictly be controlled, and just can produce the co-axial cable component of superior performance.Conventional coaxial cable is divided into semi-rigid coaxial cable, semi-flexible coaxial cable, coaxial flexible cable etc. at present, electric performance test for coaxial cable, coaxial cable manufacturer or applying unit are when testing coaxial cable, generally, by the connected mode of crimping or welding, connector is installed to coaxial cable, operate and waste time and energy, when particularly measuring large batch of multiple testing, particularly trouble seems, and connector can not be reused, cause the waste of resource, increased the expense of test coaxial cable; In addition, every coaxial test connector used is all different, and this can cause test result to have larger error.
Summary of the invention
The technical problem to be solved in the present invention is: existing for testing the connected mode that adopts welding or crimping between the connector of coaxial cable and coaxial cable in order to solve, cause connector to reuse, cause the wasting of resources and test result to have the problem of larger error, the invention provides a kind of fast type radio frequency (RF) coaxial connector of inserting for test cable and solve the problems referred to above by simple connected structure.
The technical solution adopted for the present invention to solve the technical problems is: a kind of fast type radio frequency (RF) coaxial connector of inserting for test cable, comprise shell, insulator, inner wire and resilient contact, the front end of described inner wire has the first connection-peg for being connected with described tester, rear end has the second connection-peg for being connected with the center conductor of coaxial cable, described resilient contact is near described the second connection-peg setting, while being connected with described the second connection-peg for described center conductor, hold residence and state coaxial cable, described shell has the hollow cavity of conducting rear and front end face, described inner wire, insulator and resilient contact are fixedly installed in described hollow cavity, described inner wire is isolated by described insulator and described casing insulation.
Concrete, described resilient contact comprises cylindrical housings and the first fastening boss, described cylindrical housings has the first axial through hole, the slightly larger in diameter of described the first through hole is in the diameter of the braid of described coaxial cable, the inwall matched in clearance of described cylindrical housings and described shell, the annular protrusion coaxial with described the first through hole on the inwall that described the first fastening boss is described cylindrical housings, described the first fastening boss is near the front end face setting of described cylindrical housings, the internal diameter of described the first fastening boss is slightly less than the diameter of the braid of coaxial cable, in described cylindrical housings, edge circumferentially evenly offers 6 ~ 8 the 3rd axial grooves, the notch of described the 3rd groove is positioned at the front end face of described cylindrical housings.
Put and facilitated plug, between the both sides, front and back of described the first fastening boss, be circular arc excessive.
In order to be limited to the position that limits described resilient contact in forward direction, on the outer wall of described cylindrical housings, near rear end face, there is a circle annular nib, on the inwall of described shell, there is the first step matching with described annular nib, in order to withstand described annular nib, coaxial cable is when inserting resilient contact like this, active force between annular nib and first step is offset the active force of coaxial cable and the first fastening boss, makes the central guiding physical efficiency of coaxial cable insert smoothly described the second connection-peg and be fixed by described resilient contact.
Concrete, described insulator has the second axial through hole, the rear end face of described inner wire stretches into described the second through hole and extends to the rear end face of described insulator substantially flush from the front end face of described insulator, described the first connection-peg be placed in described insulator outer and with the inwall matched in clearance of described shell, the inwall of described inner wire and described insulator fits tightly and fixes, described the first connection-peg is along circumferentially evenly offering 6 ~ 8 the first axial grooves, and the front end face near described inner wire on the inwall of described the first connection-peg has the second fastening boss.
In order to facilitate the insertion of described center conductor, described the second connection-peg is along circumferentially evenly offering 4 the second axial grooves, and the inward recess of described the second connection-peg is coaxial with described the first through hole.
The setting identical with described first step effect also has: on the inwall of described insulator, have second step, in order to limit the position of described inner wire in backward directions, the inwall of described shell and described insulator closely cooperate and have the 3rd step, in order to limit the position of described insulator in backward directions.
As preferably, the outer wall of described shell tightens forward end and offers the external screw thread for being connected with described tester, near rear end, offers anti-slip tank, and the work of anti-slip tank order plug coaxial cable is more easily simple.
Binding thread when being connected with described tester, the outer wall middle part of described shell is also milled with two planes, and described two planes are symmetrical arranged about the central shaft of inner wire.
The invention has the beneficial effects as follows, this fast type radio frequency (RF) coaxial connector of inserting for test cable has simple connected structure, has realized fast insert-pull between connector and coaxial cable, has improved the testing efficiency of coaxial cable; Connector is reusable, has reduced testing cost, realizes high efficiency batch testing, also reduces test error simultaneously.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is that the present invention is for the fast structural representation of inserting the optimum embodiment of type radio frequency (RF) coaxial connector of test cable.
Fig. 2 is the structural representation of resilient contact.
In figure 1, shell, 2, insulator, 3, inner wire, 4, resilient contact, 5, external screw thread, 6, anti-slip tank, 7, plane, 8, coaxial cable, the 41, the 3rd groove, the 42, first fastening boss, 43, annular nib, 81, center conductor, 82, braid.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention is only described in a schematic way, so it only show the formation relevant with the present invention.
As shown in Figure 1 and 2, the invention provides a kind of fast type radio frequency (RF) coaxial connector of inserting for test cable, comprise shell 1, insulator 2, inner wire 3 and resilient contact 4, the outer wall of shell 1 tightens forward end and offers the external screw thread 5 for being connected with tester, near rear end, offer anti-slip tank 6, middle part is also milled with two planes 7, two planes 7 are symmetrical arranged about the central shaft of inner wire 3, the front end of inner wire 3 has the first connection-peg for being connected with tester, rear end has the second connection-peg being connected for the center conductor 81 with coaxial cable 8, resilient contact 4 is near the second connection-peg setting, resilient contact 4 comprises cylindrical housings and the first fastening boss 42, cylindrical housings has the first axial through hole, the slightly larger in diameter of the first through hole is in the diameter of the braid 82 of coaxial cable 8, the inwall matched in clearance of cylindrical housings and shell 1, the annular protrusion coaxial with the first through hole on the inwall that the first fastening boss 42 is cylindrical housings, the first fastening boss 42 is near the front end face setting of cylindrical housings, between the both sides, front and back of the first fastening boss 42, be circular arc excessive, the internal diameter of the first fastening boss 42 is slightly less than the diameter of the braid 82 of coaxial cable 8, in cylindrical housings, edge circumferentially evenly offers 6 the 3rd axial grooves 41, the notch of the 3rd groove 41 is positioned at the front end face of cylindrical housings, on the outer wall of cylindrical housings, near rear end face, there is a circle annular nib 43, on the inwall of shell 1, there is the first step matching with annular nib 43, shell 1 has the hollow cavity of conducting rear and front end face, inner wire 3, insulator 2 and resilient contact 4 are fixedly installed in hollow cavity, insulator 2 has the second axial through hole, the rear end face of inner wire 3 stretches into the second through hole and extends to the rear end face of insulator 2 substantially flush from the front end face of insulator 2, on the inwall of insulator 2, there is second step, in order to limit the position of inner wire 3 in backward directions, the inwall of shell 1 and insulator 2 closely cooperate and have the 3rd step, in order to limit the position of insulator 2 in backward directions, the first connection-peg be placed in insulator 2 outer and with the inwall matched in clearance of shell 1, inner wire 3 fits tightly and fixes with the inwall of insulator 2, the first connection-peg is along circumferentially evenly offering 6 the first axial grooves, the front end face that the inwall of the first connection-peg tightens inner conductor 3 has the second fastening boss, the second connection-peg is along circumferentially evenly offering 4 the second axial grooves, the inward recess of the second connection-peg is coaxial with the first through hole.
Coaxial cable 8 is being carried out before electric performance test, first tester is connected with the first connection-peg, and fix with connector by the external screw thread 5 on shell 1, then coaxial cable 8 is stripped by size, spill center conductor 81 and braid 82, in insertion process, braid 82 acts on mutually with the first fastening boss 42, owing to there being the 3rd groove 41, cylindrical housings is softened, circular arc through the first fastening boss 42 is excessive, and what center conductor 81 was smooth-going is inserted in the second connection-peg, and the braid 82 of coaxial cable 8 is blocked in last the first fastening boss 42 resiliences.While extracting coaxial cable 8, only need to catch on the other hand anti-slip tank 6, catch coaxial cable 8 on the other hand, a little firmly can extract.
The above-mentioned foundation desirable embodiment of the present invention of take is enlightenment, and by above-mentioned description, relevant staff can, within not departing from the scope of this invention technological thought, carry out various change and modification completely.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to claim scope.