JP2558324Y2 - Electric signal device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electric signal device, and more particularly to an electric signal device applied to a cable television.

[Conventional technology]

For example, cable television (hereinafter, referred to as CATV) has a large number of channels, and a viewer contracts with a cable television broadcasting station to transmit television signals of the channel to each home. ing. In addition, these many channels include channels that are watched for an additional fee. Normally, for the channel for which the additional fee is to be paid, an electric signal filter (trap filter) is provided on the cable of the CATV to cut off signals in this frequency range. By removing the electric signal filter in response to the payment of the additional charge, the system supplies the channel for paying the additional charge to the home.

FIG. 5 shows an example of a conventional electric signal filter (electric signal device). As shown in FIG. 1, the electric signal filter 1 includes a first substrate 2, a second substrate 3, a shield member 4, a shield case 5, and the like. First
A filter circuit is disposed on each of the second and second substrates 2 and 3, and a signal in a frequency range of a predetermined channel is cut by the filter circuit. The shield member 4 is disposed between the first substrate 2 and the second substrate 3, and electromagnetically isolates the filter circuits disposed on each of the substrates 2 and 3 within the shield case 5. ing. The first substrate 2, the second substrate 3, and the shield member 4 are inserted into the shield case 5 in a row. The shield case 5 includes an inner case 5a and an outer case 5b. A female connector 6 for external connection is provided on the inner case 5a, and a male connector 7 is provided on the outer case 5b. Was.

In the electric signal filter 1, a conductive wire 8 is provided between the first substrate 2 and the second substrate 3 for electrically connecting the two substrates 2, 3.

Conventionally, the conducting wire 8 is provided between the opposing positions of the substrates 2 and 3, and thus the length of the conducting wire 8 is short.

[Problems to be solved by the invention]

As described above, the first substrate 2, the second substrate 3, and the shield member 4 are inserted and mounted in the shield case 5 in a row, but the conductor 8 is formed by mounting the substrates 2 and 3 to the shield case 5. Because it is difficult to connect later, it is connected before insertion.
Therefore, it is necessary to insert the boards 2 and 3 connected by the conductor 8 into the shield case 5 at the time of the insertion operation. Further, as described above, since the shield member 4 is provided between each of the substrates 2 and 3, the conductor 8 has a configuration penetrating the shield member 4.

However, in the conventional electric signal filter 1, the conducting wire 8 is provided between the opposing positions of the substrates 2 and 3 and the length thereof is short as shown in FIG. There is a problem that the conducting wire 8 is easily broken by an external force applied in a direction in which the substrates 2 and 3 are separated from each other. Further, the shield member 4 needs to be disposed between the substrates 2 and 3 while penetrating the short conductive wire 8, and the work of disposing the shield member 4 is troublesome.

As a means for solving the above-mentioned problem, it is conceivable to lengthen the conducting wire 8 as shown in FIG. However, if the conductor 8 is simply made longer, the handling of each of the substrates 2 and 3 becomes easy in the assembly process, but the conductor 8 is left in a state of being mounted in the shield case 5, and this extra conductor 8 However, there is a problem that the player plays in the shield case 5.

The present invention has been made in view of the above point, and an object of the present invention is to provide an electric signal device in which disconnection of a conductive wire and occurrence of play are prevented.

[Means for solving the problem]

In order to solve the above problem, in the present invention, a first substrate provided with a first filter circuit, a second substrate provided with a second filter circuit, and the substrate is inserted at one end side. An inner case having a first hollow portion and one of an input connector and an output connector integrally provided at the other end, and a second hollow portion into which the inner case is inserted at the other end. A shield case into which the substrate is inserted, the shield case having the outer case integrally provided with the other of the input side connector or the output side connector on one end side, the first filter circuit and the second filter An electrical signal device comprising a shield member disposed between the first substrate and a second circuit, wherein a conductive wire for electrically connecting the first substrate and the second substrate is provided on the first substrate. Pair with board An oblique portion between an opposing portion of the second substrate and an opposing portion of the second substrate opposing the first substrate, wherein the opposing portion is separated from the one side position of the first substrate. It is characterized by being arranged in.

[Action]

With the above configuration, the conductive wire is connected to the first substrate and the second substrate.
The substrate is placed obliquely between the substrates. Therefore,
Since the length of the conductive wire can be made relatively long, even if a force is applied in a direction to separate the substrates, this can be absorbed, and disconnection of the conductive wire can be prevented.

In addition, when the conductor is attached to the shield case, the conductor is obliquely laid between the first substrate and the second substrate, so that the conductor does not play inside the shield case.

〔Example〕

 Next, an embodiment of the present invention will be described with reference to the drawings.

1 and 2 show an embodiment using an electric signal filter as the electric signal device according to the present invention. In each of the drawings, an electric signal filter 10 is formed by inserting a cylindrical input-side case (inner case) 12 constituting a substantially shield case 11 into an output-side case (outer case) 13, and a filter The circuit 14 and the shield plate 15 are housed.

The filter circuit 14 includes a first circuit board 18 on the input side provided with a first filter circuit 16 and a second circuit board 19 provided with a second filter circuit 17.
A shield plate 15 is provided between the circuit boards 18 and 19.

The first and second filter circuits 16, 17 are LC circuits composed of coils 20a to 20d, capacitors and the like, and are connected by a printed pattern (not shown). The coil
The inductance of 20a to 20d is adjusted according to the frequency to be canceled as described later.

Reference numeral 21 denotes an input side contact, a contact portion 21a for holding a connector pin or a wire (not shown) inserted into the inner case 12 by a leaf spring action, and an L-shaped bent portion from the contact portion 21a. Inserted into the small hole on the input side of the board 18,
And a soldered substrate 21b. Reference numeral 22 denotes an output-side contact pin, one end of which is inserted into the output-side small hole of the second circuit board 19 and soldered, and the other end bent in an L-shape extends to the output side.

The shield plate 15 is formed by pressing a conductive metal plate, and includes a dish-shaped main body 15a and a cap 15b covering an opening of the main body 15a. The shield plate 15 is formed by fitting the main body 15a and the cap 15b together, and a space is formed in the shield plate 15 in this fitted state.

The electrical connection between the first circuit board 18 and the circuit board 19 is made by a conductor 23. One end 23a of the conductive wire 23 is connected by soldering to one side position of a portion of the first circuit board 18 facing the second circuit board 19. Also, lead 23
Is connected to the first circuit board 18 of the second circuit board 19
Is connected by soldering to a portion facing the above, and the connection position is selected at a position separated from the position where the conductive wire 23 is connected to the first circuit board 18.

Specifically, the end 23a of the conductive wire 23 is connected to a lower position in FIG. 1, and the other end 23b is connected to an upper position further apart therefrom. With this configuration, the length of the conductive wire 23 is longer than in the conventional configuration in which wires are connected at opposing positions. The conductor 23 is connected to the first circuit board 18 and the second circuit board.
The gap portion with 19 is just crossed diagonally.

The shield plate 15 has a hole (not shown) through which the conductor 23 penetrates. When the main body 15a and the cap 15b are fitted to each other, the conductor 23 is inserted into the inside thereof. The conductor 23 penetrates through the inside of the shield plate 15.

Subsequently, a procedure for assembling the electric signal filter 10 having the above configuration will be described below.

First, on each of the circuit boards 18 and 19, electronic components (coils 20a to 20d, capacitors, etc.) constituting the filter circuits 16 and 17 and the input contact pins 22 are arranged. Subsequently, the conductive wires 23 are connected to the predetermined positions of the circuit boards 18 and 19 by soldering. By connecting the conductor 23, the first and second circuit boards 18, 19 are integrated. Therefore, the assembly after the connecting step of the conductor 23 is performed by the first and second circuit boards 18 and 19.
Can be handled integrally.

Here, the first and second circuit boards 18 and 19 integrated by the conductor 23 are shown in FIG. It should be noted that the input contacts 21 and the contact pins 22 are not shown in FIG.

As described above, the end 23a of the conductive wire 23 is connected to a position below the first circuit board 18 in the figure, and the other end 23b is connected to a position above the second circuit board.
Therefore, even if an external force is applied to each of the circuit boards 18 and 19 in a direction to separate them, the conductor 23 is relatively long, so that the state shown in FIG. 4 is established, and the conductor is immediately disconnected as in the conventional case. Accidents can be prevented. As a result, in the assembling work, it is not necessary to pay attention to the conductive wire 23 as compared with the related art, so that the assembling work becomes easier,
Also, the yield can be improved.

When the conductor 23 is connected to each of the circuit boards 18 and 19 as described above, the main body 15a and the cap 1
5b is fitted with the conducting wire 23 interposed therebetween, and is temporarily fixed integrally. The work of attaching this shield plate 15 to the conductor 23
23 long so easy to do.

On the other hand, in a state where the conductor 23 is disposed in the shield plate 15, the conductor 23 has a configuration in which a space formed in the shield plate 15 is crossed as shown in FIG. Not much has occurred. As described above, both ends 23a and 23b of the conductive wire 23 having a relatively long dimension are provided.
By appropriately selecting the connection position to each of the circuit boards 18 and 19, the conductor 23 could be compactly stored in the shield plate 15.

The circuit boards 18 and 19 and the shield plate 15 integrated as described above are inserted into the inner case 12, and the cap 24 is disposed while penetrating the contact pins 22 in the opening portions. Insert it into case 13. Next, each case 12, 1 was caulked near the opening of the outer case 13.
3 are integrated, whereby the electric signal filter 10 is formed.

[Effect of the invention]

As described above, according to the present invention, it is possible to prevent disconnection of the conductor connecting each circuit board and to prevent the conductor from playing inside the shield case.

[Brief description of the drawings]

1 and 2 are cross-sectional views of an electric signal filter according to an embodiment of the present invention, FIG. 3 is an enlarged view of a connection portion by a conductor, and FIG. 4 is an external force in a direction for separating a circuit board. FIG. 5 and FIG. 6 are cross-sectional views showing an example of a conventional electric signal filter. 10 …… Electrical signal filter, 11 …… Shield case, 15…
... Shield plate, 18... First circuit board, 19... Second circuit board, 23... Lead wire, 23a, 23b.

Claims (1)

(57) [Scope of request for utility model registration] 1. A first substrate provided with a first filter circuit, a second substrate provided with a second filter circuit, and a first hollow portion into which the substrate is inserted at one end. An inner case integrally provided with one of an input connector or an output connector at the other end, and a second hollow portion into which the inner case is inserted at the other end, and an input side at one end. A shield case in which the other of the connector and the output side connector is integrally provided, wherein the shield case into which the board is inserted, and the first filter circuit and the second filter circuit are provided. An electrical signal device provided with a shield member provided with a conductive member for electrically connecting the first substrate and the second substrate; and an opposing portion facing the second substrate on the first substrate. One side position and the second substrate A facing portion facing the substrate of the first, and side position spaced from one side position of the first substrate, the electrical signal device arranged diagonally composed configured between.