JPH0415591B2 - - Google Patents

Description

[Detailed description of the invention] 〔Technical field〕 The present invention relates to a wiring device for a television.

[Background technology]

Some wiring devices for televisions have a first terminal on the front side and a second terminal on the back side. A plug provided on an antenna wire extending from the television is connected to the first terminal, and a coaxial cable extending from the antenna is connected to the second terminal.

The conventional television wiring device has a problem in that it cannot be connected to other types of wiring devices. In addition, in strong electrolytic areas, there is a problem that radio waves directly enter from TV wiring equipment, causing radio wave interference such as ghost phenomenon on the TV, and the problem that connecting the outer conductor of the coaxial cable to the second terminal There were some problems where it was a hassle to do so.

[Purpose of the invention]

This invention was made in view of the above circumstances, and can be connected in series with other types of wiring devices, has little risk of radio wave interference, and also allows a coaxial cable to be connected to the second terminal. The purpose is to provide a television wiring device that can be easily connected.

[Disclosure of the invention]

In order to achieve the above object, the present invention comprises a receiving blade electrode body and a cylindrical electrode body arranged concentrically around the receiving blade electrode body, and a first terminal to which a plug is connected; It has a body in which a protruding base with a first terminal embedded in the upper surface is integrally formed on the front side, a pair of protruding pieces that protrude to the back side and are opposed to each other, and each of these protruding pieces has a through hole. A shield plate for preventing radio wave interference is arranged to cover the back side of the body, a coaxial cable internal conductor connection part housed in the body, and a pair of coaxial cables that protrude outward from each other at one end. A second terminal to which the coaxial cable is connected, which consists of a coaxial cable outer conductor connection part with a protrusion and provided on the back side of the shield plate, and a body that electrically connects the receiving blade electrode body and the coaxial cable inner conductor connection part. The body is equipped with an electrical circuit housed in the body, and the entire body is a single module of a mounting frame to which one or more wiring devices are attached, and claws are provided on both sides of the body as means for attaching to the mounting frame. and a recess are provided, and by inserting the pair of protrusions of the coaxial cable external conductor connection part into the through hole of the shield plate from the inside, the coaxial cable external conductor connection part is connected to the coaxial cable external conductor connection part with this pair of protrusions as an axis. It is attached to the shield plate so that it can be opened and closed, and the coaxial cable outer conductor connection part is fixed in the closed state with a single screw, and the coaxial cable outer conductor is held down by the coaxial cable outer conductor connection part. Its gist is television wiring equipment that can be installed and connected.

This invention will be explained in detail below.

FIGS. 1 and 2 show one embodiment of a television wiring device according to the present invention. This television wiring device is for a terminal, and as shown in the figure, it has a resin body 1 with an open back side. A conductor connection portion (hereinafter the same) and a terminal storage portion 4 are housed therein. The back opening of the body 1 is closed with a metal shield plate 5. A protruding base is integrally formed on the surface of the body 1, a circular recess 1a is provided on the upper surface of the protruding base, and a planar circular convex portion 1b is provided within the recess 1a. There is. The convex portion 1b is provided with a through hole 6 that penetrates vertically, into which a first terminal 7 (receiving blade electrode body; the same applies hereinafter) is inserted. Through holes 8, 8 are also provided on both sides of the convex portion 1b, into which the legs 9a, 9a of the first terminal 9 (cylindrical electrode body; the same shall apply hereinafter) are inserted. There is. A plug of a television antenna wire is connected to the first terminals 7 and 9. There are recesses 1c on both sides of body 1.
One each and two claws 1d are provided. The recess 1c and the claw 1d serve as attachment means for the attachment frame, respectively. Wiring board 2
is a through hole 2a into which the lower end of the first terminal 7 is inserted;
A through hole 2b into which the lower end of the leg portion 9a of the first terminal 9 is inserted and a through hole 2c into which the projection 3b at the upper end of the second terminal 3 is inserted are provided. The second terminal 3 has two legs 3a, 3a that press against each other. The terminal storage portion 4 has a recess 4a in which the terminal 3 is stored, and a through hole (not shown) is provided at the bottom of the recess 4a. The shield plate 5 has a screw hole 5a and a notch 5b at a position off the center line, and the through hole of the terminal accommodating portion 4 is exposed to the outside from this notch 5b. Projecting pieces 10 projecting downward are provided on both sides of the notch 5b, and the projecting pieces 10 have a through hole 10a. The second terminal 11 (coaxial cable external conductor connection part; the same applies hereinafter) has a protrusion piece 11a that protrudes upward on one side and an L-shaped protrusion piece 11b that protrudes laterally, and a protrusion that protrudes upward on the other side. It has piece 11c. L-shaped projections 12, 12 are provided at the rear ends of the projecting pieces 11a, 11c, and a through hole 13 is provided in the projecting piece 11b. The second terminal 11 is configured such that the tip of the protrusion 12 is inserted into the through hole 10a and attached to the shield plate 5 so as to be openable and closable. Through hole 13
A screw 14 serving as a fixing means for fixing the second terminal in the closed state is inserted into the terminal, and a retainer 15 made of an elastic wire bent into a ring shape is fitted into the tip of the screw 14. It's becoming like that. The first terminal 7 and the second terminal 3 are electrically connected to each other via the wiring board 2, and the first terminal 9 and the second terminal 11 are connected to each other via the wiring board 2 and the shield plate 5. They are electrically connected to each other through. Coaxial cables are connected to the second terminals 3 and 11 in the following manner. First, the second terminal 11 is opened, and the internal conductor (core wire) of the coaxial cable 22 is passed through the through hole of the terminal storage part 4, and the tip is sandwiched between the legs 3a, 3a of the second terminal. Next, insert the tip of the screw 14 into the screw hole 5a.
and then tighten the shield plate 5 and the second terminal 1.
1 and sandwich the outer conductor (knitted wire) of the coaxial cable.

The television wiring device is a single module, and is fixed to a wall or the like by itself using, for example, a mounting frame 16 as shown in FIG. This mounting frame 16 is made of metal and has an opening 1 in the center.
6a. A fixed claw 16b is provided on one side of the opening 16a, and a movable claw 16c is provided on the opposite side. The television wiring device is fixed by inserting the claw 16b into the recess 1c on one side (see FIG. 1) and then pushing the claw 16c into the recess 1c on the opposite side. Thereafter, the mounting frame is attached to a wiring box embedded in a wall or the like, a plate that covers the periphery of the TV wiring device is attached to the mounting frame, and the TV wiring device is installed on the wall or the like.

In Figure 2, the TV wiring equipment is attached to the mounting frame using the recesses on the side of the body, but the mounting frame has holes on both sides of the opening into which the claws of the body are inserted. It can also be installed. In addition, in Fig. 2, the TV wiring fixture is designed to be attached independently to a mounting frame that has one set of fixed claws and one movable claw. If the mounting frame has two or more combinations of the following, two or more TV wiring devices can be installed in series. Furthermore, it becomes possible to connect the TV wiring device with other types of wiring devices, and it also becomes possible to share plates and the like with other wiring devices. Figure 4 shows
FIG. 4 is an exploded perspective view (FIG. 4a) and an assembled sectional view (FIG. 4b) showing an example of such a case. As shown in FIG. 4, the television wiring device shown in FIG.
Insert the claws 1d provided on both sides of the body 1 into the claw insertion holes provided on both sides of the opening of the mounting frame 26 (corresponding to the long sides in this figure), and then
6 and is attached to the mounting frame 26. In this case, since the width of the entire TV wiring device is molded to just one module size, it is possible to attach multiple wiring devices, for example, another TV wiring device of the present invention, and connect the AC outlet 27 etc. It is possible to do so. This mounting frame 26 has openings for three modules. In Fig. 4, 28 is an insulating separator, 2
9 is a decorative plate, 30 is an embedded hole made in a wall, etc., 31 is a coaxial cable, and the shaded part of the coaxial cable is an external conductor.

As described above, this television wiring device is provided with a shield plate on the back surface, so there is less risk of radio wave interference. In addition, as mentioned above, this TV wiring device connects the outer conductor of the coaxial cable to the coaxial cable outer conductor by simply pressing the outer conductor of the coaxial cable against the shield plate using the coaxial cable outer conductor connection part and tightening the screw. can be easily and quickly connected to other parts. As in the example 1
If all you have to do is tighten the book screws, the connection will be easier and faster.

Although the above embodiment includes a claw and a recess as means for attaching to the attachment frame, it is also possible to provide only one of them. In the above embodiment, the second connection terminal is provided at a position offset from the center line of the back surface of the body, and the coaxial cable is fixed at a position offset from the center line of the back surface of the body. This is because if the coaxial cable is on the center line on the back of the body, the coaxial cable will hit the boss of the wiring box that has the nut into which the mounting frame mounting screw is inserted, making it impossible to attach the mounting frame to the wiring box. This is because there are many. It is preferable to keep the coaxial cable at least 4 mm away from the center line on the back of the body, but this is not necessarily necessary if there is no risk of the coaxial cable hitting the boss.

FIG. 3 is another embodiment of the television wiring device according to the present invention, and shows a distributor that divides the signal into two paths. As shown in the figure, this television wiring device includes a body 1 in which a wiring board 17, second terminals 3, and a terminal storage portion 18 are housed. The rear opening of the body 1 is closed with a metal shield plate 19. The body 1 has the same structure as the body of the previous embodiment, and the first terminals 7 and 9 are fixed to the front side.
The numbers common to Figures 1 and 2 are:
showing the same thing. The wiring board 17 has a first
a through hole 17a into which the lower end of the terminal 7 is inserted;
A through hole 17 into which the lower end of the leg 9a of the terminal 9 is inserted.
b and a through hole 17c into which the projection 3b at the upper end of the second terminal 3 is inserted, respectively.
The terminal storage part 18 has recesses 18a, 18a in which the second terminal 3 is stored, and the bottom of the recess 18a has a
A through hole (not shown) is provided. The shield plate 19 has a screw hole 19a and a notch 19b, and the through hole of the terminal storage portion 18 is exposed to the outside from the notch 19b. Notch 19
A protruding piece 20 that protrudes downward is provided on both sides of b, and the protruding piece 20 has a through hole 20a. The second terminal 21 (coaxial cable external conductor connection part; the same applies hereinafter) has protruding pieces 21a, 21a that protrude upward on both sides, and a through hole 21b in the center.
have. The second terminal 21 is designed to be able to simultaneously press the outer conductors of two coaxial cables. An L-shaped protrusion 22 is provided at the rear end of the protruding piece 21a. Second terminal 21
The tip of the protrusion 22 is inserted into the through hole 20a, and is attached to the shield plate 19 so as to be openable and closable. A screw 14 is inserted into the through hole 21b.
is inserted, and a retainer 15 made of an elastic wire bent into a ring shape is fitted onto the tip of the screw 14. A signal input from one of the second terminals 3 is equally distributed to the other of the first terminal 7 and the second terminal 3 via the wiring board 17, and is distributed equally between the first terminal 9 and the second terminal 3. 21 are electrically connected to each other via the wiring board 17 and the shield plate 19. The inner conductor of the coaxial cable is connected to the second terminals 3, 3, respectively, and the second terminal 21
In this case, the outer conductors of two coaxial cables are connected, so that the two coaxial cables can be connected. For this reason, it has become possible to send signals to other wiring devices by using one of the two connected coaxial cables for input and the other for output (for sending wiring). There is.

Like the previous embodiment, this embodiment can be connected to other wiring devices, and since it is equipped with a shield plate, there is less risk of radio wave interference, and similarly, coaxial cables can be connected. The outer conductor of the coaxial cable can be easily and quickly connected to the second terminal.

In the television wiring device shown in FIG. 3, by using a wiring board equipped with necessary parts, it can be made into a branching device that is used to take out only a part of the signals. In this case, a part of the signal that has entered one of the second terminals 3 is taken out via the wiring board 17 and sent to the first terminal 7, and the remaining signal is sent to the other of the second terminals 3. It will be done.

In all of the above embodiments, the outer conductor of the coaxial cable is connected to the shield plate. Therefore, if the external conductor of the coaxial cable is grounded, the ground area can be increased and the characteristics of the device itself can be stabilized. In addition, in the latter embodiment, a shield plate with ground potential is placed close to the wiring board, making it less susceptible to external noise. This makes it possible to lower the impedance of the second terminal to which the internal conductor of the coaxial cable is connected, which improves the compatibility with the coaxial cable and improves the voltage standing wave ratio (VSWR). It's becoming possible. It is also possible to lower the impedance of the transmission path on the wiring board, which also makes it possible to improve the compatibility with the coaxial cable and improve the voltage standing wave ratio. .

〔Effect of the invention〕

The television wiring device according to the present invention includes the above-described first terminal, a body, a shield plate, a second terminal, and an electric circuit, and the whole is a part of a mounting frame to which one or more wiring devices are attached. In addition, claws and recesses are provided on both sides of the body as means for attaching to the mounting frame, and the pair of protrusions of the coaxial cable external conductor connection portion are inserted into the through holes of the shield plate. By inserting it from the inside, the coaxial cable external conductor connection part is attached to the shield plate so that it can be opened and closed around the pair of protrusions, and the coaxial cable external conductor connection part is fixed in the closed state by one screw. Since the outer conductor of the coaxial cable is pressed and connected by the coaxial cable outer conductor connection part, it can be connected with other types of wiring equipment, and it can be connected as needed. Accordingly, the existing decorative plate can be used in common, there is less risk of radio wave interference, and the outer conductor of the coaxial cable can be easily connected to the second terminal.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of one embodiment of the television wiring device according to the present invention, FIG. 2 is a plan view of the same embodiment attached to a mounting frame, and FIG. 3 is a television wiring device according to the present invention. FIG. 4 is an exploded perspective view of another embodiment of the wiring device. FIG. 4 is an exploded perspective view and an assembled sectional view of the embodiment shown in FIG. 1 attached to another mounting frame. 1c...concavity, 1d...claw, 3, 11, 21...second
terminal, 5, 19...shield plate, 7, 9... first terminal, 14... screw.

Claims (1)

[Claims] 1. A receiving blade electrode body and a cylindrical electrode body are arranged concentrically with the receiving blade electrode body as the center, and a first terminal to which a plug is connected, and a first terminal on the top surface. It has a body in which a buried protruding base is integrally formed on the front side, and a pair of protruding pieces that protrude to the back side and face each other, and these protruding pieces are provided with through holes, so that the body can be A shield plate for preventing radio wave interference is arranged to cover the back side, the coaxial cable internal conductor connection part stored in the body, and a pair of protrusions that protrude outward from each other at one end. a second terminal to which the coaxial cable is connected; It is equipped with a circuit, and the entire body is a single module of a mounting frame for attaching one or more wiring devices, and claws and recesses are provided on both sides of the body as means for attaching to the mounting frame. , by inserting the pair of protrusions of the coaxial cable external conductor connecting part into the through hole of the shield plate from the inside, the coaxial cable external conductor connecting part is attached to the shield plate so as to be openable and closable about the pair of protrusions. At the same time, the coaxial cable outer conductor connection part is fixed in a closed state with one screw, so that the outer conductor of the coaxial cable is pressed and connected by the coaxial cable outer conductor connection part. TV wiring equipment. 2. The television wiring device according to claim 1, wherein the second terminal is provided at a position offset from the center. 3. The television wiring device according to claim 1 or 2, wherein two types of second terminals are provided, one for output and one for input.