JP2003309477A - Tuner assembly - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tuner assembly in which the degree of freedom of the arrangement of a plurality of tuners is high and an assembly property is excellent. <P>SOLUTION: In this tuner assembly, side plates of adjacent housings 4 face each other in the plurality of respective tuners T1 and T2, a connector 10 and mounting legs 1c are adjacently connected to each other while arranged so as to be directed in the same direction. The side plates facing each other have no through holes, or through holes provided in the side plate are closed. Thus, the plurality of tuners have a shield effect between the tuners to increase the degree of freedom of the arrangement of the plurality of tuners. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tuner assembly suitable for use in a television receiver having a plurality of tuners.

[0002]

2. Description of the Related Art In a conventional television receiver, a plurality of tuners are attached to a mother board of the television receiver in order to receive a plurality of television signals by analog signals or digital signals.

The housings of a plurality of tuners are provided with through holes for component adjustment, through holes for checking electrical performance, and the like. Therefore, a plurality of tuners are provided with these through holes. In order to prevent signals leaking from the tuners from affecting adjacent tuners, the tuners are arranged on the mother board with a large gap therebetween.

[0004]

Conventionally, a plurality of tuners are arranged on a mother board in such a manner that a large distance is provided between them so that a signal leaking from the through hole does not affect an adjacent tuner. Therefore, there is a problem that there is little flexibility in the arrangement of the tuner. In addition, a plurality of tuners must be individually mounted on the mother board by the set maker side, which is troublesome to mount and there is a problem that assembly is poor.

Therefore, an object of the present invention is to provide a tuner assembly which has a high degree of freedom in the arrangement of a plurality of tuners and which is easy to assemble.

[0006]

As a first solving means for solving the above problems, a box-shaped housing containing a circuit board, and a connector attached to the housing and protruding forward or backward, A plurality of tuners each including a mounting leg provided to project downward from the housing and a plurality of terminals provided on the circuit board so as to project in the same direction as the mounting leg; Each of the tuners
The side plates that are adjacent to each other in a state where the side plates of the adjacent housings are opposed to each other, and the connector and the mounting leg are arranged so as to be oriented in the same direction, are joined adjacently to each other. The through hole is not present, or the through hole provided in the side plate is closed.

As a second means for solving the problems, the through hole is closed by a conductive tape. Also, the third
As a means for solving the above problem, the plurality of tuners are integrated by mounting the mounting legs on a mounting plate.

As a fourth solving means, a box-shaped housing accommodating a circuit board, a connector attached to the housing and protruding forward or backward, and an attachment provided so as to project downward from the housing A plurality of tuners each having a leg and a plurality of terminals provided on the circuit board so as to project in the same direction as the mounting leg are provided, and each of the plurality of tuners is provided in each of the adjacent housings. The side plates are opposed to each other, the connector and the mounting leg are arranged so that they are oriented in the same direction, and are joined adjacent to each other, and a shield plate is arranged between the opposed side plates. It was made into the composition.

As a fifth means for solving the problems, the side plates facing each other are provided with through holes in an open state. As a sixth means for solving the problems, the plurality of tuners are integrated by mounting the mounting legs on a mounting plate, and the shield plate is mounted on the mounting plate and integrated.

As a seventh means for solving the problems, an IC component for an oscillation circuit is mounted on one surface of the circuit board, and a coil is mounted on the other surface of the circuit board. The tuner is arranged such that the circuit board sides on which the coils are mounted face each other.

As an eighth solution means, the housing is composed of a frame body made of a metal plate having an opening portion on at least one side surface side, and a cover made of a metal plate covering the opening portion of the frame body. The cover is provided with a through hole.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Referring to the drawings of the tuner assembly of the present invention, FIG. 1 shows a first part of the tuner assembly of the present invention.
2 is a perspective view according to a second embodiment of the tuner assembly according to the present invention. FIG. 2 is a perspective view according to a second embodiment of the tuner assembly according to the present invention. FIG. 4 is a cross-sectional view of a main part according to a second embodiment of the tuner assembly of the present invention.

Next, the structure of the tuner assembly according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2. The frame 1 made of a metal plate has open portions 1a on both sides. A square-shaped frame portion 1b, a plurality of mounting legs 1c provided so as to project downward from the front plate and the rear plate of the frame portion 1b, and the frame portion 1
b has a hole provided in the lower surface plate or a relief portion 1d formed of a cutout portion.

The pair of covers 2 and 3 made of metal plates include flat plate portions 2b and 3b having a plurality of through holes 2a and 3a, and a plurality of tongue pieces 2c bent from four sides of the flat plate portions 2b and 3b. 3c.

The covers 2 and 3 are formed by the flat plate portion 2
b and 3b so as to cover the open portions 1a on both sides of the frame body 1, the tongues 2c and 3c are locked to the outer surface of the square-shaped frame portion 1b, and the covers 2 and 3 are attached to the frame body 1. It is attached.

A box-shaped box 4 having a rectangular parallelepiped shape is formed by the frame 1 and the covers 2 and 3 attached to the frame 1, and the flat plates 2b and 3b of the covers 2 and 3 form the box. 4 side plates are formed.

The circuit board 5, which is a printed circuit board, has a wiring pattern 6 formed on one surface thereof. In addition to the IC component 7 for the oscillation circuit, electric components (not shown) such as a chip type capacitor and a chip type resistor are mounted on one surface side of the circuit board 5.

On the other surface side of the circuit board 5, a coil 8 is provided.
Is arranged, the leg portion of the coil 8 is penetrated through the circuit board 5 and connected to the wiring pattern 6, and a plurality of terminals 9 for input and output made of a metal material are provided. The terminal 9 is attached to the circuit board 5 while being connected to the wiring pattern 6, and the terminals 9 project from the lower side of the circuit board 5.

In the circuit board 5 having such a structure, the terminals 9 project outward from the escape portion 1d,
The circuit board 5 is housed in the housing 4 and attached to the frame 1 by appropriate means. When the circuit board 5 is attached to the housing 4, the terminals 9 are in a state of protruding in the same direction as the mounting legs 1c of the frame 1.

When the circuit board 5 is attached to the housing 4, the coil 8 faces the through hole 2a provided in one cover 2 and the through hole provided in the other cover 3 is provided. A part of the wiring pattern 6 faces the hole 3a. And an adjusting tool (not shown)
Through the through hole 2 so that the coil 8 can be adjusted, and a probe (not shown) is passed through the through hole 3a,
The electrical performance can be checked by contacting the wiring pattern 6.

The female connector 10 has a square frame portion 1b.
It is attached to the front plate of (1) and has a structure in which a central conductor (not shown) is connected to the wiring pattern 6 in a semi-attached manner. Then, one tuner is configured by such a configuration, and such a tuner allows an adjusting tool (not shown) to pass through the through hole 2 to adjust the coil 8 and a probe (not shown). The wiring pattern 6 through the through hole 3a.
And check the electrical performance.

After that, the conductive tape 11 is attached to the covers 2 and / or 3 so as to close the through holes 2a and 3a of the covers 2 and / or 3 to form one tuner. ing.

In the first embodiment shown in FIGS. 1 and 2, the plurality of first and second tuners T1 and T2 are provided with one cover 2
Through holes 2a of the first and second tuners T1,
In T2, the covers 2 whose through holes 2a are closed face each other,
In a state where they are adjacent to each other, they are integrally mounted on the mounting plate 12.

That is, the mounting plate 12 is made of a metal plate, a printed circuit board, or the like, and the mounting legs 1c of the first and second tuners T1 and T2 are mounted on the mounting plate 12 by an appropriate means such as soldering. The first and second tuners T1 and T2 are arranged in parallel. Further, when the first and second tuners T1 and T2 are attached, the respective terminals 9 extend in the same direction as the attachment legs 1c, and the holes 12 provided in the attachment plate 12 are provided.
a protruding downward from each of the connectors 10 and
Also protrudes in the same direction.

Then, a plurality of first and second tuners T
The integrated unit of T1 and T2 by the mounting plate 12 is mounted on a mother board (not shown) at the same time and used. During this use, the first and second tuners T1 and T2 arranged adjacent to each other have the through holes 2
Since the covers 2 having the closed a are opposed to each other, a signal does not leak from the through hole 2a and the adjacent tuners are not affected, and a tuner assembly having good performance can be obtained.

Further, in the first embodiment shown in FIGS. 1 and 2,
The plurality of first and second tuners T1 and T2 include a coil 8
The circuit board 5 side where the ICs are attached face each other, and the circuit board 5 side where the IC component 7 for the oscillation circuit is attached is arranged outside.

Thus, the first and second tuners T1,
By arranging the IC components 7 for the oscillation circuit of T2 respectively on the outside, the IC components 7 can be largely separated from each other, and the interference of the tuners with each other can be further prevented.

In the above embodiment, the covers 2 are opposed to each other, but the covers 3 may be opposed to each other or the covers 2 and 3 may be opposed to each other. Further, although the explanation has been made by using the mounting plate 12, the mother board may be used as the mounting plate.

Further, although the parts adjustment and performance check are carried out with the cover having the through holes attached to the frame, the parts adjustment and the performance check are performed by using the simulated cover having the through holes. After that, a cover without a through hole may be attached to the frame body. Further, the connector may be attached to the front plate or the rear plate of the square frame.

3 and 4 show a second embodiment of the tuner assembly of the present invention. Explaining the second embodiment, the first and second tuners T1 and T2 are closed. Covers 2 having through holes 2a that are not provided are arranged to face each other, and a shield plate 13 attached to an attachment plate 12 is arranged between the first and second tuners T1 and T2.
A shield plate 13 shields between the first and second tuners T1 and T2.

Since the other structure is the same as that of the first embodiment, the same parts are designated by the same reference numerals and the description thereof is omitted here. In the second embodiment, the shield plate 13 is attached to the mounting plate 1 together with the first and second tuners T1 and T2.
The second tuner T1 and the second tuner T2 are attached to the mother substrate in this integrated state.

In the above embodiment, the covers 2 are opposed to each other, but the covers 3 may be opposed to each other or the covers 2 and 3 may be opposed to each other. Alternatively, the through holes of the opposing cover may be closed with a conductive tape or the like, and in this state, the shield plate may be shielded to further enhance the shielding effect.

[0033]

The tuner assembly of the present invention is provided with a box-shaped housing for accommodating a circuit board, a connector mounted on the housing and protruding forward or backward, and protruding downward from the housing. A plurality of tuners each having a mounting leg and a plurality of terminals provided on the circuit board so as to project in the same direction as the mounting leg are provided, and each of the plurality of tuners has a side plate between adjacent housings. Are opposed to each other, the connector and the mounting leg are arranged so that they are oriented in the same direction, and the side plates are joined adjacent to each other and face each other. Since the through holes provided are closed, multiple tuners can be shielded even if they are placed at arbitrary positions on the motherboard. Compared to It is possible to increase the freedom of arrangement of several tuners.

Further, since the through hole is closed by the conductive tape, the structure is simple and inexpensive, and the conductive tape can be attached by automation, and a product with good productivity can be obtained.

Further, since the plurality of tuners are integrated by attaching the mounting legs to the mounting plate, the tuner can be easily assembled into the mother board and the one with good productivity can be obtained.

Further, a box-shaped housing containing a circuit board,
A connector attached to the housing and protruding forward or backward, a mounting leg provided so as to project downward from the housing, and a plurality of terminals provided on the circuit board so as to project in the same direction as the mounting leg. With a plurality of tuners, each of the plurality of tuners, the side plates of the adjacent housings are opposed to each other, the connector, and the mounting legs are arranged in the same direction, Since the shield plates are placed between the side plates that are adjacent to each other and are opposed to each other, even if multiple tuners are placed at arbitrary positions on the mother board, the shield plates shield the tuners from each other. The effect can be provided, and the degree of freedom in arranging the plurality of tuners can be increased as compared with the related art.

Further, since the through-holes in the open state are provided in the side plates facing each other, a plurality of tuners can be shielded by the shield plate without the conductive tape, and a simple structure can be obtained.

Further, since the plurality of tuners are integrated by mounting the mounting legs to the mounting plate and the shield plate is mounted on the mounting plate to be integrated, the assembly into the mother board becomes easy and the productivity is improved. A good one can be obtained.

Further, IC components for an oscillation circuit are mounted on one surface of the circuit board, and coils are mounted on the other surface of the circuit board. A plurality of tuners are mounted on the side of the circuit board on which the coils are mounted. Because they are placed so that they face each other,
It is possible to further prevent the IC parts 7 from being interfered with each other by largely separating the IC parts 7 from each other.

The housing is composed of a frame body made of a metal plate having an open portion on at least one side surface side and a cover made of a metal plate covering the open portion of the frame body, and a through hole is formed in the cover. Therefore, the same single tuner as before can be used, and an inexpensive one can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of a tuner assembly according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part according to the first embodiment of the tuner assembly of the present invention.

FIG. 3 is a perspective view of a tuner assembly according to a second embodiment of the present invention.

FIG. 4 is a cross-sectional view of a main part according to a second embodiment of the tuner assembly of the present invention.

[Explanation of symbols]

1 frame 1a open part 1b frame part 1c Mounting leg 1d escape area 2 cover 2a through hole 2b Flat plate part 2c tongue 3 cover 3a through hole 3b Flat plate part 3c tongue 4 housing 5 circuit board 6 wiring patterns 7 IC parts 8 coils 9 terminals 10 connectors 11 Conductive tape 12 Mounting plate 12a hole 13 Shield plate T1 first tuner T2 second tuner

Claims (8)

[Claims] 1. A box-shaped housing for accommodating a circuit board, a connector mounted on the housing and protruding forward or backward, a mounting leg provided so as to project downward from the housing, and the mounting leg. It has a plurality of tuners provided with a plurality of terminals provided on the circuit board so as to project in the same direction, each of the plurality of tuners, the side plates of the adjacent housings are opposed to each other, The side plates, which are adjacent to each other and are opposed to each other in a state in which the connector and the mounting leg are arranged in the same direction, have no through holes or are provided on the side plate. A tuner assembly, characterized in that the through hole is closed. 2. The tuner assembly according to claim 1, wherein the through hole is closed by a conductive tape. 3. The tuner assembly according to claim 1, wherein the plurality of tuners are integrated by mounting the mounting legs on a mounting plate. 4. A box-shaped housing for accommodating a circuit board, a connector mounted on the housing and protruding forward or backward, mounting legs provided so as to project downward from the housing, and the mounting legs. It has a plurality of tuners provided with a plurality of terminals provided on the circuit board so as to project in the same direction, each of the plurality of tuners, the side plates of the adjacent housings are opposed to each other, A tuner characterized in that the connector and the mounting leg are arranged so that they are oriented in the same direction, are joined adjacent to each other, and a shield plate is arranged between the facing side plates. Assembly. 5. The tuner assembly according to claim 4, wherein the side plates facing each other are provided with through holes in an open state. 6. The plurality of tuners are integrated by mounting the mounting legs on a mounting plate, and the shield plate is mounted on the mounting plate and integrated. Or the tuner assembly according to item 5. 7. An IC component for an oscillation circuit is mounted on one surface of the circuit board, and a coil is mounted on the other surface of the circuit board, and the plurality of tuners mount the coil. 7. The tuner assembly according to claim 1, wherein the circuit board sides are arranged so as to face each other. 8. The housing is composed of a frame body made of a metal plate having an opening portion on at least one side surface side, and a cover made of a metal plate covering the opening portion of the frame body, and a through hole is formed in the cover. 8. The tuner assembly according to claim 1, wherein the tuner assembly is formed.