JP2571413Y2 - TV signal receiving equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a TV signal receiving apparatus for U / V demultiplexing and impedance matching of a TV reception signal, and more particularly to a device which is easy to assemble.

[0002]

2. Description of the Related Art A TV signal receiving device generally called a splitter or a matching device is a device that requires adjustment of characteristics.
Once assembled, it is not intended to be dismantled and repaired later. Therefore, after assembly, the case is hermetically welded with an ultrasonic welding machine or the like.

[0003] The reason for this configuration is that if an LC filter is incorporated in a high-frequency circuit, consideration is given to the fact that a characteristic shift will occur if the circuit is tampered with. In order to

[0004]

[0005] Such welding is performed in the final stage, but in the adjustment stage before that, it is often necessary to open the case and perform the work.

[0005] Conventional cases are not designed to be able to be opened at this adjustment stage and yet to be easily and manually sealed in the end.

The present invention has been made in view of the above points, and an object of the present invention is to provide a TV signal receiving apparatus having a structure which can be opened at the adjustment stage and finally can be sealed by a simple manual operation. Aim.

[0007]

In order to achieve the above object, according to the present invention, a coaxial connector is fixed to a distal end, and at least one of a feeder and a coaxial cable is connected to a proximal end. It has two shield covers that house circuit elements, which are combined with each other, two case elements that are formed by substantially halving a part excluding one end of the case, and a lid that covers the ends, The coaxial connector, the shield cover, and at least one of the feeder and the coaxial cable are supported between the two case elements, and a convex part is formed on one of the case elements and a concave part is formed on the other of the case elements. The engagement between the projections and the recesses allows the two case elements to be connected to each other in a separable manner, A TV signal receiving device having a case covered with the open ends of the two case elements and fitted and integrated so as not to be separated from the two case elements, and a coaxial cable holder with a coaxial connector are fixed to the ends. And two shield covers combined with each other to accommodate a circuit element such as an impedance conversion circuit having a base end to which at least one of a feeder and a coaxial cable is connected, and a portion excluding one end of the case being substantially halved. It has two case elements formed so as to be formed, and a lid that covers the end, and supports at least one of the coaxial connector, the shield cover and the feeder and the coaxial cable between the two case elements, and A convex portion is formed on one of the case elements, and a concave portion is formed on the other of the case elements. The two case elements are connected to each other in a separable manner by the engagement between the convex part and the concave part, and the lid is placed on the open ends of the two case elements so as to prevent the two case elements from being separated from each other. A TV signal receiving device provided with a case that is integrated with the TV signal receiving device.

[0008]

According to the present invention, there are provided two shield covers for accommodating a circuit element between two case elements, a coaxial connector or a coaxial cable holder provided on a distal end side of the shield cover, and a base end of the shield cover. At least one of the feeder and the coaxial cable provided on the side is supported.

Since the two case elements are separably connected, when adjusting the circuit elements, the two case elements are separated and opened, and after the adjustment is completed, the lid is covered and integrated with the case elements. . As a result, it cannot be opened again, and the adjustment state is maintained.

[0010]

According to the present invention, as described above, the case is constituted by the three elements of the two case elements which are separably connected and the lid which is fitted and integrated with these case elements. The two case elements can be connected and opened as needed, and after the adjustment is completed, the lid can be fitted and the case can be integrated so as not to be opened again. For this reason, in the initial stage of assembling the TV signal receiving device, the case can be opened and adjusted as required, and then closed by a simple manual operation, and the manufacturing cost can be effectively reduced.

[0011]

FIG. 1 is an exploded view of a case comprising two case elements and a lid according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a cap, and the pair of case elements 2 and 3 are assembled after the assembly and adjustment work is completed.
And the whole case is integrated.

The case elements 2 and 3 have a coaxial connector on the left side in the figure and a supporter for the feeder on the right side.
As for the case elements 2 and 3, the claws 2e of the case element 2 are inserted into the engagement holes 3e of the other case element 3, and the projections 2c of the case element 2 are inserted into the holes 3c of the other case element 3. Then, the projection 3d of the case element 3 is inserted into the hole (not shown) of the case element 2 and engaged. In this case, when an acting force is applied to the case elements 2 and 3 at the left end in the drawing to separate the case elements 2 and 3, the projection 2c comes out of the hole 3c and the engagement between the case elements 2 and 3 is released. . Therefore, the lid 1 is not covered until the adjustment is completed. 3f is a hole for holding a feeder holder (not shown).

The lid 1 is placed on the left side in the drawing of the case element after the case elements 2 and 3 are combined. The lid 1 is guided by the guides 2a and 3a of the case elements 2 and 3, and inserted. The claw 2a of the case element 2 and the claw 3a of the case element 3 are locked in locking holes (not shown) provided inside the lid 1. Once the claws 2a, 3a have been engaged with the engagement holes, they cannot be disengaged unless any part of the case is destroyed.

FIG. 2 shows a state in which the case elements 2 and 3 in FIG. 1 are engaged and the lid 1 is assembled therefrom. With the case elements 2, 3 engaged, the case is in an intermediate assembly stage. However, when adjustment is required, the case elements 2 and 3 can be separated again to adjust the built-in circuit elements. Then, after confirming that adjustment is unnecessary, the cover 1 is put on.

FIG. 3 shows a part of an end face of the case element 3 in FIGS. 1 and 2 on which the lid 1 is placed. In the same figure, one claw 3a and a guide 3b appear, and on the right side of the claw 3a in the drawing, an elongated hole 3h serving as an escape for the claw 3a to bend when the lid 1 is inserted is shown. ing.

FIG. 4 is a view showing a part not shown in FIG. 1. The case element 2 is inverted up and down according to FIG. 1A, and the lid 1 is viewed from the back side according to FIG. Is shown. FIG. 2B shows the case element 3 as in FIG.

In this figure, a hole 2d of the case element 2 which engages with the projection 3d of the case element 3 is shown. Also, lid 1
Has a hole 1 in which the claws 2a, 3a of the case elements 2, 3 are locked.
A guide groove 1c for guiding the insertion ends of the coaxial connector guide 1b having the a in the wall and the case elements 2, 3 is provided.

FIG. 5 is an exploded view of the internal elements housed in the case described with reference to FIGS. In the figure, reference numeral 4 denotes a coaxial connector arranged at one end of the case at the center position of the lid 1, and reference numeral 5 denotes a feeder holder connected to the other end of the case, which holds a feeder 6. Between the coaxial connector 4 and the feeder holder 5,
A circuit board 7 is provided, and the legs of the coaxial connector 4 are inserted into the holes 7a of the board 7, so that the coaxial connector 4 is mechanically connected and further electrically connected by soldering.

The connection with the feeder 6 is made by electrically connecting the feeder 6 to the circuit board 7 by soldering, and making the mechanical connection by inserting the board 7 into the groove 5 a of the holder 5. Two grooves 5a are provided in the thickness direction of the holder 5, and when one substrate 7 is used, one of them may be used. A shield cover 8 is provided above and below the substrate 7 in the thickness direction.
a and 8b are provided to prevent transmission of electromagnetic interference from elements on the circuit board 7.

FIG. 6 shows a state in which the state of FIG. 5 is further developed. A shield cover 8a is put on the circuit board 7 from above, and another shield cover 8b is combined therewith. This shows a state before the components 2, 3 and the lid 1 are assembled. The shield cover 8a is provided with a recess 8c for combining with the shield cover 8b.
The two shield covers are assembled by engaging the claw 8d of b.

The substrate 7 is apt to move in the longitudinal direction in the case as a result of receiving a force in the longitudinal direction, that is, in the horizontal direction in the figure, by the coaxial connector 4 and the feeder 6. Therefore, a protrusion 7b in the lateral direction is provided on the substrate 7 in a reinforcing sense, and the protrusion 7b fits into a groove 3g formed by a pair of protrusions of the case element 3.

FIG. 7 shows the assembled state after the state shown in FIG. 6, in which the feeder holder 5 with the feeder 6 is assembled to the case elements 2 and 3, the coaxial connector 4 is further assembled, and the lid 1 is covered. It is in a completed state.

8 and 9 are views showing an embodiment configured for a duplexer. FIG. 8 shows a state immediately before the lid 1 is assembled, and FIG. 9 shows a state before the case element is assembled before the lid 1 is assembled. Each is shown. Although the duplexer has one input terminal, it needs two or more output terminals, and therefore has a wide configuration.

FIG. 10 shows a detailed structure of the case element 12 in FIG. 9 upside down. The feature of this embodiment is that a protrusion 13d and a hole 12d are provided on the feeder insertion side as a member for engaging the case elements 12 and 13, and a protrusion 13f is provided from the feeder insertion side to the somewhat coaxial connector side as described later. A receiving portion 12f is provided, and a claw 13b and a locking portion 12b are provided on the coaxial connector portion. A receiving portion 13g for a substrate is provided adjacent to the projection 13f.

In this embodiment, the projection 13f, which will be described later, on the coaxial connector side from the feeder insertion side engages with the receiving portion 12f, and the claw 13b and the receiving portion 1
2b, the case elements 12, 13
Are firmly engaged with each other, so that an operation such as bending the claw 13b is required to separate the case elements 12 and 13.

The hook-shaped members 12a and 13a form a square hole when the two case elements 12 and 13 are combined. Claw 11a provided inside lid 11 in this square hole
Are engaged, and the two case elements 12, 13 and the lid 11 are integrally fixed.

FIG. 11 is a sectional view showing an engagement state between a projection 13f of the case element 13 and a push plate 12f of another case element 12. The projection 13f has an engaging claw 13c at the tip, and this claw 13c is engaged with the recess 12c of the case element 12. The projection 13f warps inward when the two case elements 12, 13 are inserted into each other, but when fitted into the recess 12c, the push plate 12f pushes the projection 13f from behind to maintain the engaged state.

FIG. 12 shows a configuration in a case where the output of the duplexer is performed by a feeder and a coaxial cable. The basic structure is the same as in FIG. 6, but
Case elements 12 and 13 correspond to case elements 2 and 3 in FIG.
And that the output is not only the feeder 6 but also the coaxial cable 10 and the cable holder 10.

FIG. 13 shows the coaxial connector 4 shown in FIG.
In this case, a coaxial cable 19 is used in place of the above, and in this case, a cable holder 19 is fitted to the lid 11. Others are the same as FIG.

FIGS. 14 to 17 show various examples of the structure of the duplexer. FIGS. 14 to 16 each show a coaxial connector on the input side and two feeders on the output side (FIG. 1).
4) shows an example of a feeder, a coaxial cable (FIG. 15), and two coaxial cables. FIG. 17 shows a coaxial cable on the input side and a feeder and a coaxial cable on the output side. This combination has various modifications, and only a few examples are shown here.

[Brief description of the drawings]

FIG. 1 is an exploded view of a case including two case elements and a lid according to an embodiment of the present invention.

FIG. 2 is an explanatory view showing a state where the case elements 2 and 3 in FIG. 1 are engaged and the lid 1 is assembled therefrom.

FIG. 3 is an explanatory view showing a part of an end face of the case element 3 in FIGS. 1 and 2 on which a lid 1 is placed;

FIG. 4 is a view for showing a part not shown in FIG. 1, and the case element 2 is inverted up and down according to FIG.
The lid 1 is shown from the back side in FIG.

FIG. 5 is an explanatory view showing an exploded internal component housed in the case described with reference to FIGS. 1 to 4;

FIG. 6 is an explanatory diagram showing a state further developed from the state of FIG. 5;

FIG. 7 is an explanatory view showing the assembled state after the state of FIG. 6;

FIG. 8 is an explanatory view showing one embodiment of the present invention configured for a duplexer.

FIG. 9 is an explanatory view showing another embodiment of the present invention configured for a duplexer.

FIG. 10 is an exploded explanatory view showing a detailed structure of the case element 12 in FIG.

FIG. 11 is a sectional view showing an engagement state between a projection 13f of a case element 13 and a push plate 12f of another case element 12.

FIG. 12 is an exploded explanatory view showing a configuration in a case where output in the duplexer is performed by a feeder and a coaxial cable.

13 is an explanatory diagram showing an example in which a coaxial cable 19 is used instead of the coaxial connector 4 in FIG.

FIG. 14 is an explanatory view showing various configuration examples of the duplexer according to the present invention.

FIG. 15 is an explanatory view showing various configuration examples of the duplexer according to the present invention.

FIG. 16 is an explanatory view showing various configuration examples of the duplexer according to the present invention.

FIG. 17 is an explanatory view showing various configuration examples of the duplexer according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1,11 Lid 2,3,12,13 Case element 4 Coaxial connector 5 Feeder holder 6 Feeder 7,17 Substrate 8,18 Shield cover 9 Coaxial cable holder 10 Coaxial cable 19 Cable holder

Claims (2)

(57) [Scope of request for utility model registration] A coaxial connector is fixed to a distal end, and at least one of a feeder and a coaxial cable is connected to a proximal end, and two shield covers combined with each other to house a circuit element such as an impedance conversion circuit therein. A case excluding one end of the case, two case elements formed substantially in half, and a lid that covers the end; the coaxial connector, the shield cover, and Supporting at least one of the feeder and the coaxial cable, a convex portion is formed on one of the case elements, and a concave portion is formed on the other of the case elements, and these convex portions and concave portions are engaged with each other. The two case elements are connected to each other in a separable manner, and the lid is placed on the open ends of the two case elements. A TV signal receiving device comprising a case which is fitted and integrated so as not to be separated from a case element. A coaxial cable holder with a coaxial connector is fixed to the distal end, and accommodates a circuit element such as an impedance conversion circuit formed by connecting at least one of a feeder and a coaxial cable to a proximal end.
One shield cover, and two case elements formed by halving a part other than one end of the case, and a lid covering the end, the coaxial connector between the two case elements, The shield cover and at least one of the feeder and the coaxial cable are supported, and a convex portion is formed on one of the case elements, and a concave portion is formed on the other of the case elements. The two case elements are connected to each other in a separable manner by being engaged, and the lid is put on the open ends of the two case elements, and is fitted and integrated so as not to be separated from the two case elements. TV signal receiving device with a case.