CN101682159B

CN101682159B - Insulated antenna plug

Info

Publication number: CN101682159B
Application number: CN2009800001815A
Authority: CN
Inventors: 佐野秀; 雨宫节
Original assignee: KOFU DENKI BUHIN KABUSHIKI KAI
Current assignee: KOFU DENKI BUHIN KABUSHIKI KAI
Priority date: 2009-05-29
Filing date: 2009-05-29
Publication date: 2012-01-04
Anticipated expiration: 2029-05-29
Also published as: CN101682159A; WO2009128567A1

Abstract

An insulated antenna plug which is capable of effectively disconnecting noise and commercial high voltage to enter a terminal device such as a television receiver through a coaxial cable. The insulated antenna plug comprises one connector (1) which has one internal connection part (11) connected with the internal conductor of the coaxial cable, has one external connection part (14) connected with the external conductor of the coaxial cable, and is fixed via an insulating spacer (2) to the casing (3) forming a sealed space and made of a conductive member; the other connector (4) which is connected with the antenna plug of the terminal device via the other center conductor (21) and the other sealed case (22), which is fixed to the casing (3); a first capacitor (8) which is connected serially between the internal connection part (11) and the other center conductor (21) and disposed within the sealed space; and second capacitors (9) which are connected between the external connection part (14) and the casing (3) and disposed within the sealed space.

Description

Insulated antenna plug

Technical field

The present invention relates to insulated antenna plug (antenna plug), be applicable to that particularly reception is via the insulated antenna plug of coaxial cable through the occasions such as television broadcasting signal of cable television system (CATV) transmission.

Background technology

Cable television system; Initial as a little less than the electric wave signal of television broadcastings such as border area, mountain region, do not receive the means of remedying in place of good images and developed; But; Be conceived to the frequency band of its non-constant width, the coaxial cable of this transmission television broadcasting also is used to other purposes, for example the fax or the transmission of Word message etc.

In such information with the use coaxial cable headed by the cable TV transmits, not only transmit signals such as television broadcasting, various noises also are transmitted, and the result has produced problems such as causing the reduction of television broadcasting picture quality.In addition, if coaxial cable mixes mutually, touches mutually with the distribution wire of commercialization halfway, commercial high voltage (surge voltage, as follows) is invaded terminal equipments such as television receiver through coaxial cable, possibly become the reason that causes the accident accident.Particularly under the inadequate situation of ground connection side (external conductor side) ground connection of coaxial cable, high voltage can be invaded terminal equipment via the ground connection side.

Have again,, can mention patent documentation 1 as the known technology of association area though still there be not the aerial plug or the similar device of having managed to add the insulation system that prevents that noise or high voltage from invading.

Patent documentation 1: the spy opens the 2007-59137 communique

As stated; With coaxial cable when terminal equipments such as television receiver transmit information; In the conventional art; Noise and commercial high voltage in that coaxial cable transmits are invaded under the situation of this television receiver via the aerial plug of terminal equipments such as television receiver, and the playing image of television broadcasting is worsened, and produce the rough sledding that is difficult to expect that causes because of the high-tension intrusion of commercialization.

Summary of the invention

In view of above-mentioned conventional art, the object of the present invention is to provide the noise and the commercial high-tension insulated antenna plug that can effectively cut off via terminal equipments such as coaxial cable intrusion television receivers.

The 1st form of the present invention of reaching above-mentioned purpose is an insulated antenna plug; It is characterized in that having: a side inside connecting portion is connected with the inner conductor of coaxial cable and a side external connecting is connected with the external conductor of said coaxial cable, is fixed on the side's connector on the casing of the conductive member that forms confined space across insulating component; Be connected with the aerial plug of terminal equipment via the opposing party's inside connecting portion and the opposing party's external connecting, said the opposing party's external connecting is fixed on the opposing party's connector of said casing; Between the connecting portion of a said side's inside connecting portion and said the opposing party's inside, be connected in series, be located at the 1st electric capacity in the said confined space; And between a said side's external connecting and said casing, be connected, be located at the 2nd electric capacity in the said confined space.

According to this form, the decay of high fdrequency component warp the 1st electric capacity that transmits in the coaxial cable is little so be not sent to terminal equipment side with not changing former state, and on the other hand, the low frequency component that transmits in the coaxial cable is cut off by the 1st and the 2nd electric capacity respectively.Its result can increase the signal to noise ratio of the signal that is sent to terminal equipment.

In addition; Is cut off by the 1st electric capacity because of the electric current that commercial high voltage caused of invading terminal equipment side through the inner conductor of coaxial cable such as mix, touch mutually mutually with distribution wire, the electric current that commercial high voltage caused of the external conductor intrusion end side through coaxial cable is cut off by the 2nd electric capacity.Its result can avoid following such high voltage to invade terminal equipment and the rough sledding that is difficult to expect that takes place well.

The 2nd form of the present invention is an insulated antenna plug; It is characterized in that; In the insulated antenna plug of in the 1st form, putting down in writing; In said confined space, be provided with and have that an end is connected with a side's of said side's connector inside connecting portion and the substrate of first conductive part that the other end is connected with the opposing party's of said the opposing party's connector inside connecting portion; And said the 1st electric capacity is installed on the said substrate said the 1st conductive part midway, and second current-carrying part is that two parts are formed on the said substrate, and said the 2nd electric capacity is installed between two parts of said second conductive part.

According to this form,, can improve assembly manipulation property because the 1st and the 2nd electric capacity is installed on the substrate.

The 3rd form of the present invention is an insulated antenna plug; It is characterized in that; In the insulated antenna plug of in the 1st form, putting down in writing, said insulating component connects the hole that said casing forms from the inboard of said casing, and the inner peripheral surface butt that makes the flange part that forms on its end and said casing is to limit its axial location; Thereby be fixed on the said casing; Said side's connector connects the hole that forms on the said insulating component vertically, and the said flange part butt of flange part that forms on the end of the external connecting of one of which side and said insulating component, thereby is fixed on the said casing across said insulating component to move axially limited state.

According to this form; Between flange part that forms on the end as a side's of electric conductor external connecting and casing, accompany insulating component (dielectric) as electric conductor; Therefore, between said external connecting portion and casing, insert the structure of the actual equivalence of state of small capacity in formation and the 1st form.Its result, the noise that can the external conductor via coaxial cable be transmitted through this electric capacity cuts off.

According to the 4th form of the present invention; In the insulated antenna plug of in the 2nd form, putting down in writing; Said insulating component connects the hole that said casing forms from the inboard of said casing; And the inner peripheral surface butt that makes the flange part that forms on its end and said casing to be limiting its axial location, thereby is fixed on the said casing, and said side's connector connects the hole that forms on the said insulating component vertically; And the said flange part butt of flange part that forms on the end of the external connecting of one of which side and said insulating component, thereby be fixed on the said casing across said insulating component to move axially limited state.

According to this form; Between flange part that forms on the end as a side's of electric conductor external connecting and casing, accompany insulating component (dielectric) as electric conductor; Therefore, insert the structure of the actual equivalence of state of small capacity in formation and the 2nd form between said external connecting portion and the casing.Its result, the noise that can the external conductor via coaxial cable be sent through this electric capacity cuts off.

According to the 5th form of the present invention; In the insulated antenna plug of in the 2nd to the 4th form, putting down in writing in arbitrary form; A said side's of said side's connector inside connecting portion and a said side's external connecting have respectively to the outstanding incorporate tab of said box house, and on the part of the said the 1st and the 2nd conductive part of said substrate, have the line of rabbet joint that embedding respectively has said tab.

According to this form; Can under the state of the 1st and the 2nd line of rabbet joint of each self-embedding substrate of tab of the 1st and the 2nd conductive part, assemble; Therefore can make that the position of substrate fixes on the precalculated position exactly in the casing, and being connected between inside connecting portion and the external connecting that can carry out side's connector well and the 1st and the 2nd conductive part.

According to the 6th form of the present invention; In the insulated antenna plug of in the 3rd or the 4th form, putting down in writing; Bearing surface one side and opposing face one side thereof at the flange part of the flange part of said insulating component and a said side's external connecting form protuberance respectively, on the other hand; On the flange part of a said side's external connecting; Formation is embedded limiting the notch portion that said side's connector sways by the protuberance of said bearing surface one side, and in the said hole of said casing, forms by the protuberance of said opposing face one side to embed to limit the notch portion that said insulating component sways.

According to this form, can limit side's connector through the notch portion of flange part and sway with respect to insulating component, in addition, can limit insulating component through the protuberance of insulating component and sway with respect to casing.Its result can keep side's connector and insulating component fixing with respect to casing steadily in the long term.

According to the present invention, the high fdrequency components such as television broadcasting signal of the for example mhz band that in coaxial cable, transmits are very little through the decay of the 1st electric capacity, therefore are sent to terminal equipment side with not changing former state.

On the other hand, invade the noise of terminal equipment side via the inner conductor of coaxial cable and cut off by the 1st electric capacity and the 2nd electric capacity respectively via the noise that the external conductor of coaxial cable is invaded end side.Because such electric current is greatly decayed in the 1st and the 2nd electric capacity.

Its result can increase the signal to noise ratio of the signal that is sent to terminal equipment, helps to improve the picture quality of television broadcasting.

In addition; Cuts off by the 1st electric capacity because of the electric current that commercial high voltage caused of invading terminal equipment side such as mix, touch mutually mutually with distribution wire, cut off by the 2nd electric capacity via the electric current that commercial high voltage caused of the external conductor intrusion end side of coaxial cable via the inner conductor of coaxial cable.

Its result can avoid following the intrusion terminal equipment of such high voltage and the rough sledding that is difficult to expect that takes place.

Description of drawings

Fig. 1 integrally representes the insulated antenna plug of the embodiment of the invention, (a) is its front elevation, (b) is its side view, (c) is its back view.Among Fig. 2 the connector 1 of Fig. 1 being extracted out and expression in detail, (a) be its front elevation, (b) is its back view, (c) is its side view.Among Fig. 3 the insulation spacer 2 of Fig. 1 being extracted out and expression in detail, (a) be its front elevation, (b) is its back view, (c) is its side view.The connector 1 of Fig. 4 presentation graphs 1 and insulation spacer 2 are the perspective views of the insulation spacer 2 watched from the inboard of casing 3 (a), (b) are the perspective view of connector, (c) are assembling perspective view.Fig. 5 is the connector 1 of Fig. 1 and the perspective view of insulation spacer 2, (a) is the perspective view of the insulation spacer 2 watched from the outer side of casing 3, (b) is the perspective view of connector, (c) is assembling perspective view.Fig. 6 removes the lid 6 of the casing 3 among Fig. 1 and representes the plane graph that it is inner.Fig. 7 is the circuit diagram of equivalent electric circuit of the insulated antenna plug of the expression embodiment of the invention.Fig. 8 is the side view of the insulated antenna plug of whole other embodiment of expression the present invention. Description of reference numerals1 connector, 2 insulation spacer 2b flange part 2c, the 2d protuberance 3 casings 4 connectors 5 body 5a hole 7 substrates 7a～7d line of rabbet joint 8 the 1st electric capacity 9 the 2nd electric capacity 10 protuberances 11 center conductor 11a hole llb tabs 14 radome

14a flange part

14b notch portion

14d, 14e tab 15 the 1st

conductive part

16,17 the 2nd conductive parts 21 center conductor 21a tabs 22 radomes 24 cylindrical members

Embodiment

Below, the execution mode that present invention will be described in detail with reference to the accompanying.Have again, adopt same Reference numeral with a part among each figure.

Fig. 1 representes the integral body of the insulated antenna plug of the embodiment of the invention, (a) is its front elevation, (b) is its side view, (c) is its back view.Shown in these figure; The connector 1 of the input side that the termination connected (side) of the coaxial cable of transmitter side (not shown) is fixed on the casing 3 across insulation spacer 2, and the connector 4 that is connected the outlet side (the opposing party) of terminal equipment side such as television receiver simultaneously directly is fixed on the casing 3.

Here, casing 3 is body 5 by the container with peristome that all forms with conductive member and the lid 6 of the peristome of body 5 sealing is constituted, forms the confined space of electromagnetic shielding.In such confined space is casing 3, accommodates the substrate 7 that is formed with predetermined conductive path and be installed in the

predetermined capacitance

8,9 on this substrate 7.Here, form the 4 places protuberance 10 outstanding in the side of body 5,, substrate 7 is arranged on the inside of casing 3 across protuberance 10 through each protuberance 10 of following butt that makes substrate 7 towards its internal water level land.Have again, will detail at the back literary composition with substrate 7 other related structures.

Among Fig. 2 side's connector 1 being extracted out and expression in detail, (a) be its front elevation, (b) is its back view, (c) is its side view.Shown in these figure, the center conductor 11 that side's connector 1 has the hole of the inner conductor that inserts coaxial cable reaches the radome 14 that surrounds the concentric tubular of insulating component 12 across space 13 with the concentric shape insulating component that surrounds center conductor 11 12.In the present embodiment, center conductor 11 becomes a side inside connecting portion, and in addition, radome 14 becomes a side external connecting, and the two all forms with conductive member.The inner conductor of coaxial cable (copper cash) inserts among the hole 11a of center conductor 11, and the space 13 between its external conductor (copper cash of netting) insertion insulating component 12 and the radome 14, and is connected with radome 14 with center conductor 11 respectively.

The end of radome 14 forms flange part 14a; And 2 places on the peripheral direction of flange part 14a

form notch portion

14b, 14c with this flange part 14a otch, and form (Fig. 2 towards lower direction)

outstanding tab

14d, 14e rearward from each notch portion 14b, 14c.On the other hand, be formed with on the center conductor 11 its end connect circular insulating component 12 the center and to the outstanding same tab 11b in above-mentioned rear.Here,

tab

11b, 14c, 14d are positioned on the straight line of crossing by the heart among center conductor 11, insulating component 12 and the radome 14 formed concentric circless.

The spacer 2 that will insulate among Fig. 3 is extracted out and expression in detail, (a) is its front elevation, (b) is its back view, (c) is its side view.Shown in these figure, the insulation spacer 2 that insulating component (for example polythene material) forms has to be let connector 1 connect vertically and keeps coaxial hole 2a, on its end flange part 2b is arranged simultaneously.On face (above Fig. 3 (c)) the upper periphery direction of the front of flange part 2b relative to 2 places be formed with and stop the protuberance 2c that rotates (the back literary composition details), and on the face (below Fig. 3 (c)) of base end side, also be formed with and stop the protuberance 2d that rotates (back literary composition detailed description).

As stated, connector 1 makes up as follows and is fixed on the casing 3 with insulation spacer 2.State when assembling like this being described with reference to Fig. 4 and Fig. 5.Two figure are the perspective view of expression connector 1 and insulation spacer 2; Fig. 4 representes that the situation of watching from the inboard of casing 3, Fig. 5 represent the situation of watching from the outer side of casing 3, (a) is the perspective view of insulation spacer 2; (b) be the perspective view of connector 1, (c) be assembling perspective view.Shown in these figure; Connector 1 connects the hole 2a that forms on the insulation spacer 2 vertically; Simultaneously be connected to the flange part 2b that forms on the end of insulation spacer 2, be fixed under the limited state on the insulation spacer 2 thereby move axially at it at the flange part 14a that forms on the end of radome 14.Here, on the protuberance 2d of flange part 2b, embed the notch portion 14b, the 14c that are formed at flange part 14a.Its result is limited through radome 14 with respect to the swaying of insulation spacer 2 of connector 1.

Such connector 1 and insulation spacer 2 shown in Fig. 4 (c) and Fig. 5 (c), are fixed on the casing 3 with the state that is made of one.Carry out with Fig. 1 and mode shown in Figure 6 with respect to the fixing of casing 3.

Here, Fig. 6 removes the lid 6 of the casing 3 among Fig. 1 and representes the plane graph that it is inner.Like Fig. 1 and shown in Figure 6, the insulation spacer 2 that is made of one with connector 1 connects the hole 5a that casing 3 forms from the inboard of casing 3, makes the inner peripheral surface butt of flange part 2b and casing 3 and limits its axial location, thereby be fixed on the casing 3.Here, the flange part 2b of insulation spacer 2 goes up the protuberance 2c that forms and is embedded in continuous notch portion on the 5a of the hole of casing 3.Its result, insulation spacer 2 is limited with respect to swaying of casing 3.That is, with protuberance 2d restriction connector 1 with respect to the swaying of insulation spacer 2, and with protuberance 2c restriction insulation spacer 2 with respect to the swaying of casing 3, thereby, connector 1 and insulation spacer 2 by the circumferential limited in rotation of axle be fixed on the casing 3.

Like this; Through being fixed on the insulation spacer 2 that connector 1 is made of one on the casing 3; As sandwiching flange part 2b between the flange part 14a of electric conductor and the casing 3 as the insulation spacer 2 of insulating component (dielectric) as electric conductor; Therefore, between radome 14 and casing 3, form the electric capacity of small capacity.This electric capacity also can cut off noise.

Substrate 7 is seated on the protuberance 10 that forms on the side of above-mentioned body 5; And be accommodated in the confined space that forms in the inside of casing 3; At the 1st electric capacity 8 of installation midway (the blacking part among the figure) of the 1st conductive part 15, and the 2nd electric capacity 9 (the blacking part among the figure) is installed at the 2nd conductive part 16, between 17.Here, the 1st conductive part the 15, the 2nd

conductive part

16,17 can suitably form with Copper Foil.In addition, the 1st conductive part 15 in the present embodiment and an end of the 2nd conductive part 16 are formed with line of

rabbet joint

7a, 7b, 7c, in line of rabbet joint 7a, embed the tab 11b of center conductor 11, in line of

rabbet joint

7b, 7c, embed tab 14d, the 14e of radome 14 respectively.So; Scolding tin is inserted in gap through between line of

rabbet joint

7a, 7b, 7c and

tab

11b, 14d, 14e; Via tab 11b the center conductor 11 of connector 1 is electrically connected with the 1st conductive part 15, and is electrically connected with the radome 14 of connector 1 via tab 14d, 14e.Here, the 2nd conductive part 17 is electrically connected with the body 5 of casing 3 through welding via weld zone 18.Its result, radome 14 is electrically connected with casing 3 via

tab

14d, 14e, the 2nd conductive part the 16, the 2nd electric capacity the 9, the 2nd conductive part 17 and weld zone 18.In addition, be provided with 4 the 2nd electric capacity 9 in the present embodiment, be not limited thereto quantity, have at least 1 to get final product.

The opposing party's's (outlet side) connector 4 is by supporting that across insulating component 23 concentric circles ground in the present embodiment, radome 22 directly is fixed on the casing 3 as the center conductor 21 of inner connecting portion with as the radome 22 of external connecting.In addition, the end of casing 3 sides of center conductor 21 forms tab 21a, is embedded among the line of rabbet joint 7d that forms on the other end of the 1st conductive part 15 of substrate 7.On the part of such line of

rabbet joint

7d, 7d is electrically connected center conductor 21 with the gap of tab 21a with the 1st conductive part 15 with the scolding tin landfill line of rabbet joint.Here;

Tab

11b, 14d, 14e are positioned on the straight line of crossing by the heart among center conductor 11, insulating component 12 and the radome 14 formed concentric circless in the present embodiment; And each

tab

11b, 14d, 14e embed line of

rabbet joint

7a, 7b, 7c and are limited on the position separately; Therefore, can carry out connector 1 and insulation spacer 2 fitting operation well for casing 3.Equally, because tab 21a embeds line of rabbet joint 7d, its position is defined, and can carry out the fitting operation of connector 4 for casing 3 well.

Have, the grey color part among Fig. 6 is last scolding tin part again, is the part that the Copper Foil of the 1st and the 2nd

conductive part

15,16,17 exposes.

Fig. 7 is the circuit diagram of equivalent electric circuit of the insulated antenna plug of the expression embodiment of the invention.As shown in the figure; Be connected by the 1st conductive part 15 across midway the 1st electric capacity 8 at the center conductor 21 of the connector 4 of the center conductor 11 of the connector 1 of input side and outlet side, radome 14 and radome 22 are connected by the 2nd

conductive part

16,17 and casing 3 across the 2nd electric capacity 9 midway.

According to such present embodiment; Via in coaxial cable, transmitting and very little through the decay of the 1st electric capacity 8, therefore be not sent to terminal equipment side through center conductor 21 via the high fdrequency components such as television broadcasting signal of the mhz band of center conductor 11 inputs with not changing former state.

On the other hand, the noise of invading terminal equipment side from the inner conductor of coaxial cable via center conductor 11 is cut off by the 1st electric capacity 8, and in addition, the noise of invading end side through the external conductor of coaxial cable and via radome 14 is cut off by the 2nd electric capacity 9.

Its result can increase the signal to noise ratio of the signal that is sent to terminal equipment.

In addition; Cut off by the 1st electric capacity 8 because of the electric current that commercial high voltage caused that inner conductor via coaxial cable invades terminal equipment side such as mix, touch mutually mutually with distribution wire, the electric current that commercial high voltage caused that the external conductor through coaxial cable invades end side is cut off by the 2nd electric capacity 9.

Its result can avoid following the intrusion terminal equipment of such high voltage and the rough sledding that is difficult to expect that takes place well.

Have, the present invention is not limited to the foregoing description again, and any change in the technological thought scope of the present invention all belongs to possibility.For example, the connector 1 of input side promptly insulate spacer 2 and is fixed on the casing 3 across insulating component in the above-described embodiments, but this can obtain with connector 4 with outlet side and is fixed in the identical effect of casing 3 across insulating component.In addition, the connector 4 with input side and outlet side all has no relations to fix also with the state of casing 3 insulation.

And; In the present embodiment; Constitute flange part 2b and the medial surface butt of casing 3 of insulation spacer 2, but also can adopt structure shown in Figure 8, in the hole of casing 3 5a around the cylindrical member 24 of the conductive member of forwards giving prominence to from the outer peripheral face of casing 3 is set; Cover the outer peripheral face of insulation spacer 2 with this cylindrical member 24, thereby obtain better effectiveness. Utilize possibility on the industry

The present invention can obtain effectively to utilize at the industrial field of being engaged in the manufacturing of television receiver, sale.

Claims

1. insulated antenna plug is characterized in that having:

One side's inside connecting portion is connected with the inner conductor of coaxial cable and a side external connecting is connected with the external conductor of said coaxial cable, be fixed on across insulating component form confined space as the side's connector on the casing of electric conductor;

Be connected with the aerial plug of terminal equipment via the opposing party's inside connecting portion and the opposing party's external connecting, said the opposing party's external connecting is fixed on the opposing party's connector of said casing;

Between the connecting portion of a said side's inside connecting portion and said the opposing party's inside, be connected in series, be located at first electric capacity in the said confined space; And

Between a said side's external connecting and said casing, be connected, be located at second electric capacity in the said confined space.

2. the described insulated antenna plug of claim 1 is characterized in that:

In said confined space, be provided with and have that an end is connected with a side's of said side's connector inside connecting portion and the substrate of first conductive part that the other end is connected with the opposing party's of said the opposing party's connector inside connecting portion, and

Said first electric capacity is installed on the said substrate said first conductive part midway, and

Second current-carrying part is that two parts are formed on the said substrate, and said second electric capacity is installed between two parts of said second conductive part.

3. the described insulated antenna plug of claim 1 is characterized in that:

Said insulating component connects the hole that said casing forms from the inboard of said casing, and the inner peripheral surface butt that makes the flange part that forms on its end and said casing to be limiting its axial location, thereby is fixed on the said casing,

Said side's connector connects the hole that forms on the said insulating component vertically; And the said flange part butt of flange part that forms on the end of the external connecting of one of which side and said insulating component, thereby be fixed on the said casing across said insulating component to move axially limited state.

4. the described insulated antenna plug of claim 2 is characterized in that:

5. each described insulated antenna plug in claim 2 to the claim 4 is characterized in that:

A said side's of said side's connector inside connecting portion and a said side's external connecting have respectively to the outstanding incorporate tab of said box house, and

Have on the part of said first and second conductive parts of said substrate and embed the line of rabbet joint that said tab is arranged respectively.

6. the described insulated antenna plug of claim 3 or claim 4 is characterized in that:

In the flange part of said insulating component,, form protuberance respectively with bearing surface one side and opposing face one side thereof of the flange part of a said side's external connecting,

On the other hand, on the flange part of a said side's external connecting, form by the protuberance of said bearing surface one side and embed limiting the notch portion that said side's connector sways, and

In the said hole of said casing, form by the embedding of the protuberance of said opposing face one side to limit the notch portion that said insulating component sways.