CN2125882U

CN2125882U - Joint end of 75 ohm coaxial cable

Info

Publication number: CN2125882U
Application number: CN 92200816
Authority: CN
Inventors: 罗清井
Original assignee: Jebsee Electronics Co Ltd
Current assignee: Jebsee Electronics Co Ltd
Priority date: 1992-01-09
Filing date: 1992-01-09
Publication date: 1992-12-23

Abstract

The utility model provides a joint end of 75 ohm coaxial cable. The naked end of the shielding layer in the coaxial cable is inverted and coated on the external of a coating layer, while the mouth piece on one end of the metal jacket of the joint end tightly sleeves the coating layer of the naked end of the cable together with the shielding layer above the coating layer, enhancing the effect of shielding and isolating noise and reducing the interference degree to increase the transmission effect. Besides, the tail section of the axle center rod of the joint end of the utility model forms a bulge loop and is provided with an axle hole, which enables the core wire of the naked end of the coaxial cable to directly penetrate into and be clamped by the axe hole to form a connection status and makes the assembling and combining work to be carried out easily.

Description

Joint end of 75 ohm coaxial cable

The utility model system is relevant for the combined structure between a kind of 75 ohm coaxial cable lines and tab terminal, especially it covers the respond well of noise to refer to combine part with tab terminal by a kind of cable, but lessen any interference degree and increase the fax effect, and the more firm person of its bonding state.

Press, at present television set, video recorder institute generally promptly all adopt 75 ohm coaxial cable in order to derive the lead of sound shadow signal, and the structure of this coaxial wire sees also shown in Figure 1ly, and the axle center of this cable 1 is that an axle center heart yearn 11(is general so-called holding wire); One layer insulating 12 is arranged around the heart yearn 11; It is ground wire that insulating barrier 12 peripheral 360 degree nets all around are covered with layer of metal shielding layer 13(), this shielding layer 13 is to be reticulated by the braiding of number of metal shield wire, it mainly acts on tying up in the external noise of masked isolation invades heart yearn 11 to avoid it, and interfere with the transmission effect of signal, also be ground wire (connecing negative pole) and heart yearn (connecing positive pole) formation loop simultaneously; The periphery of shielding layer 13 then is the coating layer 14 of one deck cable.And the combined structure between known this coaxial wire and its tab terminal, see also shown in Fig. 2,3, system is respectively the three-dimensional exploded view of its combined structure and in conjunction with cutaway view, there is a metal-coating 21 in these tab terminal 2 main systems, one of metal-coating 21 port system has filled in an insulating sleeve 22, insulating sleeve 22 central authorities are wrapping tightly the terminal axle center bar 23 of a metal material, and section 231 can be a hollow shape bar before this axle center bar 23, in order to do just with the heart yearn 11(holding wire of cable 1) welding; And insulating sleeve 22 1 sides have depression 221, in order to do the shielding layer 13 of power supply cable 1 in twist with the fingers poly-penetrate this depression 221 and with metal-coating 21 welding.

When taking off tectonic association on complying with, the first shielding layer 13 with cable 1 of system draws in to gather in a side and becomes to twist with the fingers a strand 131, with heart yearn 11 and twist with the fingers tail end and the metal-coating 21 port inner edges (being depression 221 places of insulating sleeve 22) that strand was welded in terminal axle center bar 232 in 131 minutes, make tab terminal 2 be able to stube cable line 1 again; Succeed in its peripheral ejection formation one external coating 3, to consolidate the connecting state of the two.

So, the combined structure between above-mentioned known 75 ohm coaxial cable lines and tab terminal but has following shortcoming:

(1) no masked isolation effect: because of the shielding layer 13 of cable 1 in conjunction with the time system draw in earlier to gather and form one section in a side and twist with the fingers strand 131, then connect metal-coating 21 again, therefore the masked isolation effect of its 360 degree promptly forms a breach in this junction, that is can increase the noise interference and attenuating fax effect.(heart yearn 11 so far covers vacuum in conjunction with promptly being around the part, makes to disturb to be easy to invade).

(2) steadiness is not attained perfect: since cable 1 and tab terminal 2 be attached at not that coating layer 3 is to only depend on heart yearn 11 to combine with strand 131 before, so the steadiness of its basic Chu combination is not attained perfect as yet.

Edge is, the main purpose of the utility model is promptly providing a kind of 75 ohm coaxial cable line and tab terminals, and the noise screening effect that its junction tool is good lowers annoyance level and increases the fax effect, the firm more person of its bonding state of tool.

The main feature of the utility model, be that its naked end of the interior shielding layer of its coaxial wire is that example is draped over one's shoulders and is overlying in week outside the coating layer, one of this metal-coating end running-on then extends and the coating layer of the naked end of cable layer is tightly entangled together with screenings on the coating layer, in order to do increasing good masked isolation effect, annoyance level is lowered and increase fax effect.

Time characteristics of the utility model, the rear system that is its terminal axle center bar forms the two mutual reeds that paste folder, and two reed tail ends outwards are separately and part out shape a little, can directly penetrate in order to do the heart yearn of the naked end of coaxial cable and to be subjected to its clamping to form connection status in two reeds, make the work of assembly advance passerby easily.

And relevant utility model is for reaching above-mentioned purpose, characteristics, and technological means that is adopted and effect thereof are lifted a preferable possible embodiments now and cooperated graphic being described as follows.

Shown in Figure 1 is the structural map of coaxial wire.

Shown in Figure 2 is combined structure three-dimensional exploded view between known 75 ohm coaxial cable lines and tab terminal.

Shown in Figure 3 is combined structure cutaway view between known 75 ohm coaxial cable lines and tab terminal.

Shown in Figure 4 is the three-dimensional exploded view of the utility model embodiment.

Shown in Figure 5 is the cutaway view of the utility model.

Seeing also shown in Fig. 4,5, is to be respectively the three-dimensional exploded view of this creation embodiment and in conjunction with cutaway view, and there is a coaxial cable 4 in main system, and the heart yearn 41 of the outstanding suitable length in the naked end axle center of cable 4, its shielding layer 42 then drape over one's shoulders and be overlying on coating layer 43 places week and enclose; One metal-coating 5, the cover of its rear 51 footpath (internal diameter) are little cable footpath greater than cable 4, can tightly entangle cable 4 together with the shielding layer 42 that drapes over one's shoulders thereon in order to do being convenient to, and Duan Ze is a two-part and pushes away the circular cone ring section 52 of pulling out among the metal-coating 5; One terminal axle center bar 6, its preceding half section 61 is to be hollow shape, with as cloudy terminal (also can be solid hopkinson bar with as male), later half formation one bulge loop 62, and offer an axis hole 621, so that clamping heart yearn 41; One insulating sleeve 7, the outer wall complexed metal overcoat 5 of this axle sleeve 7 and have a diameter enlarge before the back segment of section and reduced, so that firmly place in the metal-coating 5, axle sleeve 7 inside are fitted shaft core bar 6 and have to be installed with room 71 then, this room 71 is pre-large post-small setting, make and insert its interior axle center bar 6, but the bulge loop 62 of mat back segment and can not skidding off.

According on take off tectonic association the time, system is earlier with insulating sleeve 7, cover is lived terminal axle center bar 6 admittedly, and the bulge loop 62 on the axle center bar 6 also is embedded at being installed with in the room 71 of insulating sleeve 7, the two is a temporary transient steady status to make insulating sleeve 7 and axle center bar 6, the heir is inserted in its section opening 53 before metal-coating 5 and be fixed in it, this promptly becomes a tab terminal, again coaxial cable 4 is squeezed from the port of the rear 51 of metal-coating 5 and be inserted in to the location, this heart yearn 41 just can insert axle center bar 62 axis holes 621 and be subjected to its clamping this moment, and metal-coating 5 also is connection status with shielding layer 42, afterwards can outside metal-coating 5, lay some fixing concave point 54(respectively and see also Fig. 5), make to be placed in its interior insulating sleeve 7 and coaxial cable 4 and to be able to more firmly, be provided with one with ejection formation more at last and coat 8 and finish its combined structure outward.

Be with, the utility model has following effect and advantage really:

(1) the good buffer action of covering is arranged: the coaxial cable 4 interior shielding layer 42(of the utility model are ground wire) be extended down to the junction with tab terminal, still be to connect airtight with one of the 360 unnotched states of degree and metal-coating 5 end running-on, and make bridging effect continue to extend to tab terminal, therefore have good isolation, annoyance level is lowered and increase fax effect.

(2) the perfect linking steady character of tool: be to entangle on the clad 43 of coaxial cable 4 naked ends with metal-coating 5 between the tab terminal of the utility model and the coaxial cable 4, therefore have perfect linking steady character.

(3) mode that connects is with the closely connected replacement welding of clamping: the heart yearn 41 of the utility model is to penetrate in the axis hole 621 of terminal axis rod 6 to be subjected to its clamping, and shielding layer 42 then is closely connected with the jacket wall of one of metal-coating 5 end running-on, the two equal welding formality.

Claims

1, a kind of 75 ohm coaxial cable wire terminal terminals mainly include:

One coaxial cable is by an axle center heart yearn, the insulating barrier of heart yearn periphery, and the coating layer of the shielding layer of insulating barrier periphery and shielding layer periphery is formed;

One terminal axle center bar, its tail end is connected with the heart yearn of coaxial cable;

One insulating sleeve, it is to be wrapped in the second half section periphery of terminal axle center bar and then terminal axle center bar to be overlapped firmly solid; And

One metal-coating, it is to be coated on the insulating case periphery, the one end also is connected with the shielding layer of coaxial cable;

It is characterized in that its naked end of the interior shielding layer of this coaxial cable is to drape over one's shoulders to be overlying in week outside the coating layer, one of this metal-coating end running-on then tightly entangles the coating layer of the naked end of coaxial cable together with the shielding layer that drapes over one's shoulders outside coating layer.

2,75 ohm coaxial cable wire terminal terminals according to claim 1 is characterized in that, the tail end system of this terminal axle center bar forms bulge loop, and has axis hole, can directly penetrate in order to do the heart yearn that makes the naked end of coaxial cable to be subjected to its clamping to form connection status in the axis hole.