Method of attachment and the device of a kind of coaxial radio-frequency lightning protector inner wire and discharge tube
Technical field
The present invention relates to a kind of component connecting method and device of lightning protection device, relate to specifically method of attachment and the device of a kind of coaxial configuration radio frequency lightning protection device inner wire and discharge tube; Belong to the shocking preventing technology field.
Background technology
Along with the progress of society and the raising of quality of life, human requirement and function to radio communication also changes thereupon, and radio communication is by the evolution of 2G to 3G, and the generation of 3G technology has met social development and requirement with application.Because the characteristic requirements base station construction density of 3G technology is high and with former GSM system equipment can not fully general (equipment need be done and change or upgrading), therefore the early investment of 3G network is very high, along with 3G requires more and more higher the time communications, the lightning protection of 3G communication system also becomes the most important thing like this.As the 3G system, the whole system protection is mainly contained: direct lightning strike protects, draws port, the intermediate frequency that external power, integrated tower are put to zoom out circuit, GPS radio frequency, power line and control line etc.Wherein the lightning protection of relevant radio-frequency apparatus is part and parcel very in the lightning-protection system, still adopt at present the radio frequency lightning protection devices of GSM, GPS, the low power repeater radio-frequency (RF) communication system such as CDMA, TD-SCDMA for the radio frequency lightning protection of 3G system more, though this class lightning protection device also is referred to as coaxial radio-frequency lightning protector, but in fact be not the coaxial configuration of standard, its product build is large, assembly program is complicated, index error, high in cost of production characteristics, is difficult to satisfy the lightning protection requirement of 3G system.Structure can find out from accompanying drawing 1 that as shown in Figure 1 existing radio frequency lightning protection device is by mainly being comprised of outer conductor 1, outer conductor 2, discharge tube trip bolt 3, inner wire 4, dielectric 5, discharge tube 6.The main deficiency of this product is as follows:
1, the large cost of volume is high: because discharge tube is to compress from the outside by a trip bolt 3, so that discharge tube is close in the conductor, keep contacting with inner wire; So just require the volume of outer conductor 2 to want enough large, so just can have living space the discharge tube trip bolt is installed, so product material cost is very high;
2, not the coaxial cavity of standard: because the discharge tube trip bolt is for the main device that compresses discharge tube 6, therefore inner chamber body must be punched, so just destroy the coaxial cavity structure of former lightning protection device, caused the frequency range of the insertion loss of product and standing-wave ratio index error, product narrow;
3, the product water proofing property is poor: owing to considering the reasons such as cost and assembling, producer usually can not do waterproof technology to the discharge tube trip bolt and process when producing.Will increase product material cost as the discharge tube trip bolt being done the waterproof technology processing, simultaneously because its reasons in structure namely is to have done waterproof technology can not reach good waterproof effect, be applied to outdoorly must carry out good water-proofing treatment work (as using the products such as mackintosh or clay) such as product, increased construction cost.
Not yet find relevant for the patent aspect the coaxial radio-frequency lightning protector in Chinese patent board web retrieval, just find the radio frequency lightning protection device of some relevant radio frequency lightning protection, be ZL200920135513 such as the patent No., name is called the Chinese patent of " broadband radio frequency lighting arrester ", discloses a kind of broadband radio frequency lighting arrester.It comprises shell, wiring board and is installed on the first coaxial fitting, the second coaxial fitting and the 3rd joint on the shell, described the first coaxial fitting and the first microstrip line join, the second microstrip line and the second coaxial fitting join, and the first coupling capacitance is connected between the first microstrip line and the second microstrip line; One end and first microstrip line of the first inductance join, and the other end links to each other with the first shunt capacitance, gas discharge tube, the first decoupling element respectively; The other end ground connection of the first shunt capacitance; One end and second microstrip line of the second inductance join, and the other end links to each other with the second shunt capacitance, the second coupling capacitance; One end of the second decoupling element with join with TVS pipe and the 3rd joint, the other end of the second decoupling element joins with the second coupling capacitance, the first decoupling element, the other end ground connection of gas discharge tube and TVS pipe.But both can find out from accompanying drawing that this radio frequency lightning protection device was not coaxial radio-frequency lightning protector.Therefore necessary this is improved.
Summary of the invention
The problem that exists in order to solve prior art, the invention provides a kind of modified model coaxial radio-frequency lightning protector, it is not real coaxial problem that this coaxial radio-frequency lightning protector can effectively solve existing coaxial radio-frequency lightning protector, and having water resistance can be better, the characteristics such as cost is low, convenient for production, stable performance.
The objective of the invention is to be achieved through the following technical solutions: the method for attachment of a kind of coaxial radio-frequency lightning protector inner wire and discharge tube, adopted totally enclosed outer conductor shell, discharge tube directly is placed in an outer surface not to be had in the outer conductor inner chamber of opening, and discharge tube is positioned on the outer surface of inner wire, and the intimate of discharge tube and inner wire is fit together; After inner wire and discharge tube assemble, two ends at inner wire are respectively charged into dielectric, then the end of inner wire of medium of will having packed into the outer conductor of packing into is connected with outer conductor after outer conductor is packed waterproof grommet into, has guaranteed like this water resistance of product.
It can be that outer surface with discharge tube and inner wire welds together realization that the intimate of described discharge tube and inner wire fits together.
It can be by the mechanical pressure realization that is assembled together with the outer surface of discharge tube and inner wire that the intimate of described discharge tube and inner wire fits together.
The coaxial radio-frequency lightning protector that proposes according to said method is: a kind of coaxial radio-frequency lightning protector comprises outer conductor, inner wire, dielectric and discharge tube; Inner wire is installed in the outer conductor, it is characterized in that: the outer conductor shell is full-closed structure, inner wire is supported in the formed internal cavity of outer conductor by dielectric, coaxial with outer conductor, and fixing by the dielectric location, and dielectric is fixed by the formed interior loop mapping of outer conductor inner chamber; Outer conductor internal cavity, after inserting with the dielectric of inner wire, will form one and seal internal cavity, at the inner wire outer surface of the sealing internal cavity of outer conductor discharge tube is installed, discharge tube is close on the outer surface of inner wire.
As to further improvement of the present invention, be provided with waterproof grommet at the interface of the first outer conductor and the second outer conductor.
As to further improvement of the present invention, discharge tube can adopt welding or mechanical crimping mode to be connected with inner wire, effectively raises the production efficiency of product.
The invention has the advantages that: the present invention has adopted totally enclosed outer conductor shell, discharge tube is in the sealing internal cavity, be close on the outer surface of single inner wire by welding or mechanical compaction mode, improve the discharge tube of coaxial radio-frequency lightning protector and the connected mode of inner wire, effectively dwindled small product size and do not destroyed again the coaxial cavity structure of product, guaranteed that the microwave transmission characteristic of product is not damaged.Discharge tube adopts welding or mechanical crimping mode to be connected with inner wire, reduce some unnecessary connections, improved production efficient, made product possess water-proof function by having increased waterproof grommet simultaneously, the above has guaranteed that this product is applicable to large-scale application and popularization.
Description of drawings
Fig. 1, be the structure chart of conventional coaxial radio-frequency lightning protector;
Fig. 2, for the structural representation of a kind of coaxial radio-frequency lightning protector of the present invention;
Fig. 3, be the assembling schematic diagram of the inner wire of a kind of coaxial radio-frequency lightning protector of the present invention and discharge tube;
Fig. 4, be the inner wire of the another kind of coaxial radio-frequency lightning protector of the present invention and the assembling schematic diagram of discharge tube;
Fig. 5, be the A-A cutaway view of Fig. 4;
Fig. 6, for the circuit diagram of coaxial radio-frequency lightning protector of the present invention.
Embodiment
Below in conjunction with being described in detail the present invention is novel with embodiment with reference to the accompanying drawings.
Accompanying drawing 2 has provided one embodiment of the present of invention, can find out the method for attachment that the present invention relates to a kind of coaxial radio-frequency lightning protector inner wire and discharge tube by accompanying drawing 2, adopted totally enclosed outer conductor shell, discharge tube directly is placed in an outer surface not to be had in the outer conductor inner chamber of opening, and discharge tube is positioned on the outer surface of inner wire, and the intimate of discharge tube and inner wire is fit together; After inner wire and discharge tube assemble, two ends at inner wire are respectively charged into dielectric, then the end of inner wire of medium of will having packed into the outer conductor of packing into is connected with outer conductor after outer conductor is packed waterproof grommet into, has guaranteed like this water resistance of product.
It can be that outer surface with discharge tube and inner wire welds together realization that the intimate of described discharge tube and inner wire fits together.
It can be by the mechanical pressure realization that is assembled together with the outer surface of discharge tube and inner wire that the intimate of described discharge tube and inner wire fits together.
Embodiment one
The coaxial radio-frequency lightning protector that proposes according to said method is as shown in Figure 2: a kind of coaxial radio-frequency lightning protector comprises the first outer conductor 7, the second outer conductor 10, inner wire 9, dielectric 4 and discharge tube 5; The first outer conductor 7, the second outer conductor 10 coaxial being assembled together, form the outer conductor of an integral body, and the first outer conductor 7 shells are full-closed structure, and the outer surface of the first outer conductor 7 shells is without outward opening, and the first outer conductor 7 and the second outer conductor 10 are for can be split as two-part assembly; Inner wire 9 is supported in the first outer conductor 7 and the second outer conductor 10 formed internal cavities 7 by dielectric 4, coaxial with the first outer conductor 7 and the second outer conductor 10, and fixing by dielectric 4 location, and dielectric 4 is fixed by the first outer conductor 7 and the second outer conductor 10 formed interior loop mappings; The first outer conductor 7 and the second outer conductor 10 formed internal cavities 7, after inserting, the dielectric 4 with inner wire 9 will form a sealing internal cavity, inner wire outer surface at the first outer conductor 7 and the second outer conductor 10 and dielectric 4 formed sealing internal cavities is equipped with discharge tube 11, and discharge tube 11 directly is close on the outer surface of inner wire 9.
As to further improvement of the present invention, be provided with waterproof grommet 12 at the interface of the first outer conductor 7 and the second outer conductor 10; The first outer conductor 7 adopts engage thread to be connected with the second outer conductor 10.
As to further improvement of the present invention, discharge tube 11 can adopt welding or mechanical crimping mode to be connected with inner wire 9, effectively raises the production efficiency of product.
Embodiment two
Fig. 3 is an alternative embodiment of the invention, its characteristics are that the inner wire 14 of described coaxial radio-frequency lightning protector adopts assemble welding to be connected with discharge tube 11, inner wire 14 and discharge tube 11 contacts site be inner wire 14 cylindrical directly and discharge tube 11 baseplanes 15 weld together, adopt scolding tin that discharge tube 11 and inner wire 14 are linked together, this mode has improved the machining efficient of product.
Embodiment three
Fig. 4 and Fig. 5 are an alternative embodiment of the invention, its characteristics are that the inner wire 16 of described coaxial radio-frequency lightning protector and discharge tube 11 adopt mechanical pressure assembling mode, one plane 19 is arranged on the end face of inner wire 16, plane 19 is close together with the bottom surface of inner wire 16, inner wire 16 is plane contact with discharge tube 11 contacts site, and the contact area that increases inner wire 16 and discharge tube 11 guarantees the through-flow performance of thunder and lightning of product; This mode is that the mechanical compaction power by inner wire 16 links together discharge tube 11 and inner wire, and this mode need not to weld the efficiency of assembling that has improved product; Described mechanical compaction power can be to clamp by elastic clamp device, also can be by the cassette clamping device, directly blocks discharge tube by other parts, and itself and inner wire 16 are close together; For accurate location, the plane that contacts with discharge tube 11 at inner wire 16 has pin-and-hole 17, and discharge tube inserts in the pin-and-hole 17 of inner wire by an alignment pin 18, positions.
Fig. 6 is electrical block diagram of the present invention, be parallel with discharge tube between the inner wire of described coaxial radio-frequency lightning protector and the outer conductor, discharge tube can move immediately when overvoltage or overcurrent are arranged, induction overcurrent or induction overvoltage in the circuit of releasing, thus effectively guarantee the safety of equipment.
Apparently; execution mode in the foregoing description only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work; can also obtain according to these accompanying drawings other execution mode, these modes still belong to protection category of the present invention.