JP3069436B2 - Antenna wire connection structure of antenna wire drop-in device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a BS and UHF / V
The present invention relates to an antenna line connection structure of an antenna line drop-in device that mixes reception outputs of HF antennas and draws the signal indoors with a single drop line.

[0002]

2. Description of the Related Art Recently, with the spread of BS receiving televisions, BS antennas have been installed in addition to conventional UHF / VHF antennas. In this case, the reception outputs of the antennas for BS and UHF / VHF are mixed so that the outputs of the antennas can be collectively pulled in indoors.
2. Description of the Related Art An antenna wire drop-in device that pulls a book drop into a room indoors is provided.

[0003]

By the way, the connection terminal for connecting the antenna wire of this type of conventional antenna wire drop-in device is connected to the core of the antenna wire with a screw terminal.
The covering portion was pressed with an Ω-shaped holding metal to stop the tension of the antenna wire. However, this type of conventional antenna wire connection device has a problem in that the connection work is troublesome.

The present invention has been made in view of the above points, and an object of the present invention is to provide an antenna wire connection structure for an antenna wire drop-in device which can reduce the construction of antenna wire connection. To provide.

[0005]

According to the present invention, in order to achieve the above object, a core wire of an antenna wire inserted from an insertion hole is elastically held by a holding member having an internal conductive property.
Terminals respectively connected to antenna inputs for UHF / VHF and UHF / VHF, and holding metal fittings which are pivotally supported on shaft supports provided on both sides of these terminals and hold the covering portion of the antenna wire between the retracting device main body and And a fixing piece is formed which is screwed from one side of the holding portion of the holding metal fitting to the retracting device main body.

[0006]

The present invention has the above-described structure,
The antenna wire can be connected to the terminal part by the so-called quick connection method,
Facilitates connection of antenna lines to BS and UHF / VHF antenna inputs. In addition, the conventional Ω-shaped holding metal was used by rotating the holding metal to hold the covering part of the antenna wire between the retracting device body and the screw and fixing only one side to the fixing piece. As in the case, it is not necessary to position the holding member, and it is possible to fix the holding member with one screw, thereby facilitating the work of stopping the tension. Thus, the connection of the antenna wire can be reduced.

[0007]

1 to 6 show an embodiment of the present invention. The present invention is applied to a television wiring system as shown in FIG. In the television wiring system is provided with a booster B ₁ that amplifies the reception output of each of the VHF antenna A ₁ and UHF antenna A ₂ s to antenna A _1, A ₂ side. Incidentally, and outputs the mixed reception output of each of the booster B ₁ antenna A ₁ for the VHF and UHF In, A ₂ s. Further, the BS antenna A ₃ is provided with a BS converter C together.

Then, the antenna lines L ₁ and L ₂ from the respective antennas A _{1 to} A ₃ are drawn indoors via the antenna line drop-in device E according to the present invention. Here, in the antenna wire drop-in device E, the reception outputs of the VHF and UHF antennas A ₁ and A ₂ and the BS antenna A ₃ are mixed and drawn indoors with one drop wire L ₃ . Then, the mixed output is amplified in BS booster B _2, the amplified output BS
It is distributed to the BS outlet F provided in each room via the distributor D. Here, the BS booster B ₂ and BS distributor D is installed in a corridor, for example.

Thus, the booster B _{1 is connected} to the antenna A ₁ ,
Together provided the A ₂ side, when provided integrally BS converter C to BS antenna A _3, the power supply to the booster B ₁ or BS converter C as described above (DC15
V). Therefore, in the case of the embodiment, by superimposing the power at the BS booster B ₂ to incoming line L ₃ are then supplied to the antenna line drawing device E. Then, the antenna wire drawing device E, as shown in FIG. 6, the voltage component superimposed on the incoming line L ₃ separates extracted,
A voltage superimposing circuit 1 superimposed on each of the antenna lines L ₁ and L ₂ is provided. Here, the separation and extraction of the voltage components are performed using the choke coils CH _{1 to} CH ₃ , and for each VHF and UHF
Capacitors C ₁ and C ₂ are inserted in the input line of the receiving output for the DC power supply to prevent the DC component from being applied to the mixing circuit 2. Since the output of the mixing circuit 2 is provided with a coupling capacitor, the coupling capacitor prevents a DC component from being applied to the output. By performing in this way the feeding to the BS converter C and the booster B ₁ via the antenna line L _1, L _2, wiring work of the feed line to the BS converter C and the booster B ₁ is not required.

In this embodiment, a path for supplying power to the antenna line L ₁ , that is, a choke coil CH ₂ , C
It is provided with a power supply on-off switch SW ₁ between H _3. The power supply on-off switch SW ₁ is as an off when the antenna A _1, A ₂ side for use and UHF VHF without a booster B _1, so as to stop power supply to the booster B ₁ through the antenna line L ₁ It is. In this way, it is possible to prevent problems caused by shorting of the antenna line L ₁ when unused booster B _1.

[0011] antenna wire drawing device E, as shown in FIG. 3, a connecting portion 11a which connects the antenna line L ₁ from the antenna A _1, A ₂ for the UHF and VHF for via booster B _1, BS converter Antenna A for BS via C
And a connecting portion 11b which connects the antenna line L ₂ from _3. The housing 10 of the antenna wire drop-in device E
Is a box-shaped base 13 made of synthetic resin and having an open bottom surface, a cover 14 attached to the front surface of the base 13 so as to be openable and closable, and a back cover 1 attached to the lower surface of the base 13 as shown in FIG.
5 is comprised.

[0012] Inside of the base 13, a printed circuit board 16 on which electronic components and the switch SW ₁ constituting the voltage superimposing circuit 1 and the mixer 2 described above is mounted, the shield plate 17 for shielding the printed circuit board 16 Is stored. The cover 14 is attached so as to be freely opened and closed by a shaft pin 19 attached to a bearing portion 18 formed on the upper end side of the base 13.

The printed board 16 is provided with three blade-receiving spring-like connection terminals 20 to which the cores of the antenna lines L ₁ and L ₂ and the lead-in line L ₃ are connected.
A terminal case 21 having a core wire insertion hole 21a is attached to the terminal case 21. When the core wires of the antenna lines L ₁ and L ₂ and the drop wire L ₃ are inserted from the core wire insertion hole 21a of the terminal case 21, the connection terminal 20 It has a so-called quick connection structure in which it is elastically sandwiched and connected to a circuit on the printed circuit board 16. In addition, as shown in FIG. 1, a U-shaped convex ridge 21b having an opening in the core wire introduction direction is formed around the core wire insertion hole 21a formed on the upper surface of the terminal case 21, thereby facilitating insertion of the core wire. There is.

At a position corresponding to each connection terminal 20 of the shield plate 17, a shaft supporting portion 22 including an opening for exposing the upper part of the terminal case 21 and a pair of shaft supporting pieces 22a formed on both sides of the opening is provided. A holding member 23 for holding the antenna lines L ₁ and L ₂ and the lead-in line L ₃ is rotatably attached to the shaft support portion 22. Hold down 23
Is formed with a pivotal support piece 23a which is rotatably supported by the pivotal support piece 22a at the distal end. Here, the distal ends of the respective pivotal support pieces 23a of the holding metal 23 are bent outward, and the bent portions 23c are inserted into the cuts 22b formed on the shaft support pieces 22a of the shaft support 22, and the cuts are made. The tip of 22 b is fixed to the shield plate 17 by swaging. In this case, it goes without saying that the holding member 23 is swaged so as to rotate about the bent portion 23c as a fulcrum.

A fixing piece 23b which is screwed into a screw hole 25 of the shield plate 17 with a screw 24 is formed on one side of the base of the holding member 23. Incidentally, between the end portion of the fixing piece 23b of the retainer member 23, the antenna line L _1, L ₂ and incoming line L ₃ and the fixed piece 23b of the portion of the elastic clamping and the shield plate 17 at the opposite end A space holding piece for providing an appropriate space is formed. As shown in FIG. 1, a positioning projection 45 for preventing a displacement of the holding member 23 is formed on a side of the spacing member formed on the fixing member 23b. Note that the screw 24 is integrally attached to the fixing piece 23b using a retaining C-shaped ring 46.

In this embodiment, the connection terminals 11, 11 b, and 12 are formed by the connection terminal 20, the terminal case 21, the shaft support 22, and the holding member 23. The base 13 has an opening 25 on the front surface for exposing the connection portions 11a, 11b, 12 to the front side, and a partition wall 26 surrounding the connection portions 11a, 11b, 12. The antenna lines L ₁ and L ₂ are connected to the knockout portion 2 formed on the partition 26.
7 is broken and drawn into the partition 26. Note that the central portion of the base 13, Yes to form an insertion hole 28 through which lead-L ₃ to be drawn into the indoor side, the shield plate 17 in correspondence with the insertion holes 28, printed circuit board 16 and back cover 15 An opening 29 and insertion holes 30, 31 are formed respectively. Between the opening 25 and the insertion hole 28 for the connecting section 12 forms a recess 39 to accommodate the lead-L _3, the antenna line L ₁ is in the retracted side of the antenna line L _1, L ₂ of the other openings 25 , it is formed a recess 38 to accommodate the L _2. Also, as you can operate the switch SW ₁ from the front surface side of the base 13, an operation window 42 which exposes the operation knob of the switch SW ₁ also is formed.

FIG. 3 shows the appearance of the antenna wire drop-in device E after assembly. In addition, the antenna wire drop-in device E
A waterproof packing 32 is attached to the back side of the. This antenna wire drop-in device E is attached to an embedding box 34 embedded in an outdoor surface using an attachment frame 33. In this case, the box screw 35 is attached to the mounting piece 3 through the mounting hole 33a.
4a, the mounting frame 33 is mounted on the embedding box 34, and then the fixing screw 36 is tightened through the insertion hole 37 of the base 13 into the fixing hole 33c of the fixing portion 33b formed in the mounting frame 33, thereby obtaining the antenna. The wire dropping device E is installed on an outdoor surface.

In this case, the lead-in line L ₃ is drawn out to the outdoor side as shown in FIG.
Incidentally, fitted into the insertion hole 31 of the waterproof packing 43 formed in the back cover 15 shown in FIG. 2, when pulling out the lead-L ₃ through the waterproof packing 43 on the front side, waterproof insert the incoming line L ₃ Can be reliably performed, which is preferable. In this case, lead-L ₃ consisting of coaxial line the core wire 40 exposed,
The tip is bent as shown in FIG. 4A, and the bent portion is inserted into the core wire insertion hole 21a of the terminal case 21. As a result, the core wire 40 is elastically held by the connection terminals 20, and connection with the circuit on the printed circuit board 16 is performed.

[0019] Then, fit in the recess 39 so as to push the original-side portion from the tip of connecting the core wire 40 of the lead-L ₃ as shown in Figure 4 (b). Then, the holding metal 23 is turned around the pivot piece 23a as a fulcrum, and the drop line L
₃ is sandwiched between the covering portion 41 and the concave portion 39. In this state, the fixing piece 23b screwed to the shield plate 17 by screws 24, subjected to retaining the pull wire L _3.

In the above description, the connection method of the drop line L ₃ has been described. However, the antenna lines L ₁ and L ₂ are substantially the same as the drop line L ₃ except that the connection is made from the front side of the base 2. Similarly, they are connected to the connection parts 11a and 11b. Then, when the cover 14 is closed, the wiring work by the antenna wire drawing-in device E is completed.

[0021]

As described above, according to the present invention, the core wire of the antenna wire inserted from the insertion hole is elastically held by the holding member having conductivity inside and connected to the antenna inputs for BS and UHF / VHF, respectively. And a holding member pivotally supported by the shaft supporting portions provided on both sides of the terminal portion and holding the covering portion of the antenna wire between the retracting device body and the holding portion of the holding member for holding the antenna wire. Since a fixed piece that is screwed from one side to the main body of the retracting device is formed, the antenna wire can be connected to the terminal portion in a so-called quick connection type, and the mixed output of the antenna for BS and UHF / VHF antenna of the antenna wire can be obtained. Is easy to connect, and the holding part is turned to clamp the covering part of the antenna wire between the retracting device main body and only one side is fixed to the fixing piece by screwing. Using holding metal As in the case, it is not necessary to position the retainer member, yet it is possible to fix the bracket holding a single screw, Therefore anchorage work is also easy,
Therefore, it is possible to reduce the construction of the connection of the antenna wire.

[Brief description of the drawings]

FIG. 1 is a plan view showing a structure of a terminal portion of an antenna lead-in device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the structure of the antenna wire drop-in device.

FIG. 3 is an explanatory view of a method of constructing an antenna wire drop-in device on an outdoor surface.

FIGS. 4A and 4B are explanatory diagrams of a method of connecting an antenna line.

FIG. 5 is an explanatory diagram of a television wiring system.

FIG. 6 is a circuit diagram of the antenna wire drop-in device.

[Explanation of symbols]

E Antenna wire drop-in device L ₁ , L ₂ antenna wire L ₃ Drop-in wire 20 Connection terminal 21 Terminal case 21a Core wire insertion hole 22 Shaft support 23 Holding metal 23a Pivot piece 23b Fixing piece 24 Screw

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-129682 (JP, A) JP-A-3-265315 (JP, A) Fully open 1981-41472 (JP, U) Fully open 1986 57637 (JP, U) Shokai 55-68274 (JP, U) Satellite Broadcasting Reception Handbook Pages 64 to 67 February 1989 Issued by the Television Reception Improvement Committee (58) Fields surveyed (Int. Cl. ⁷ , DB name) H02G 3/02 H01P 1/213 H01R 4/38 H01R 9/28

Claims (1)

(57) [Claims] 1. An antenna wire drop-in device that mixes reception outputs of BS and UHF / VHF antennas and draws them indoors with a single drop-in wire. Terminals that are elastically pinched by a pinching member having elasticity and that are connected to antenna inputs for BS and UHF / VHF, respectively, and the sheathing portions of the antenna wires that are pivotally supported by the shaft supports provided on both sides of these terminals. A holding member to be held between the holding device and the device main body, wherein a fixing piece screwed to the drawing device body from one side of the holding portion of the holding member for holding the antenna wire is formed. Antenna wire connection structure.