JPH09139240A - Tv receptacle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain sufficient shielding effect. SOLUTION: A coaxial cable by which an inputted high-frequency signal is transmitted, and a coaxial cable for transmitting an outputted high-frequency signal are mounted on the side plate part of a chassis 10, and can be shielded by mounting input side and output side shielding metal fittings 16 and 18 respectively on the side plate part. The opened surface of the chassis 10 can be shielded by mounting a shielding cover 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television outlet for installing a terminal for supplying a high frequency signal from a television antenna or the like installed outdoors to a television or the like in each indoor room or the like. is there.

[0002]

2. Description of the Related Art A television outlet of this type is housed in a box 100 embedded in a wall of a room, as shown in FIG. This TV outlet 101 is a mounting frame 102 mounted on the front surface of the box 100.
Of the mounting frame 102, which is fixed to, for example, the central portion.
Decorative plate 10 on the front of the product to improve the appearance
3 is attached. The coaxial cable 105 through which the high frequency signal from the television antenna or the like is propagated is inserted into the insertion hole 1 formed in the upper part of the box 100.
It is drawn into the box 100 from 04 and is connected to the input terminal of the TV outlet 101. Further, the high frequency signal input to the TV outlet 101 is sent to the next TV outlet via the coaxial cable 105 connected to the output terminal.

Further, a branched output obtained by branching the input high frequency signal is output from a TV output terminal on the front surface of the TV outlet 101 and supplied to a TV or the like. The input terminal and the output terminal are connected to the TV outlet 10.
1 is provided on the side surface portion. Such a television outlet is described in, for example, Japanese Utility Model Laid-Open No. 5-6700, and an exploded perspective view showing the configuration of the television outlet is shown in FIG. The TV outlet shown in FIG. 9 includes an insulating case 111 molded in a U-shape, and the case 11
1. A chassis 114 formed into a U shape by bending a sheet metal fitted in 1 and the chassis 11
A circuit board 117 in which a branch circuit arranged in 4 is assembled.
And a shield cover 118 that covers the open portion of the chassis 114.

Further, from the front side of the case 111, a plug outer conductor 113 is inserted into a plug inner insulator integrally formed in the case 111, and a tip of the outer conductor 113 is placed on a circuit board 117 arranged in a chassis 114. Soldered and fixed. A core contact piece 116 disposed in the insulating cylinder is inserted into the plug inner insulator, and one end of the core contact piece is soldered to the circuit board 117. Further, the coaxial cable in which the high frequency signal is propagated is the saddle metal fitting 115.
And fixed to the side plate portion of the chassis 114, and the core wire is connected to the input terminal. Further, the coaxial cable through which the output high-frequency signal is propagated is fastened and fixed to the side plate of the opposite chassis 114 by the saddle metal fitting 115, and the core wire is connected to the output terminal.
The open portion of the U-shaped chassis 114 is covered with a shield cover 118 to enhance the shielding effect.

[0005]

Such a TV outlet has an IF signal of CS broadcast or BS broadcast, UHF,
1 for VHF TV broadcast signals and FM radio broadcasts
Since a wide-band high-frequency signal of 0 to 1880 MHz is input, it is necessary to prevent the direct wave from jumping in as noise and to enhance the shield effect so as to prevent the leakage signal from being emitted to the outside. However, in the conventional TV outlet, there is a problem that a high frequency signal is easily leaked from a mounting portion of the side plate portion of the chassis 114 where the core wire of the coaxial cable is exposed, and a sufficient shielding effect cannot be obtained.

Further, since the plugged outer conductor is soldered to the circuit board, it is formed by processing a thin sheet metal. For this reason, there is a problem in that it is difficult to thread the outer periphery of the connector and a so-called F-type connector cannot be screwed. Further, this plug outer conductor is fitted and inserted into the plug internal insulator integrally formed with the case 111, and the core wire contact piece 116 disposed in the insulating cylinder is inserted into the plug internal insulator. Since this structure is used, there is also a structural complexity in that the internal insulator is formed in two layers.

Furthermore, the chassis 114 is processed into a U-shape by bending a sheet metal.
Since it is difficult to form the guide portion of 17, the circuit board 117 is fixed only by being directly soldered to the inner surface of the chassis 114. Therefore, the case 111 is melted by the heat, when the core wire of the coaxial cable is screwed to the case 111 side, or when the saddle metal fitting 11 is used.
There is a problem that stress when tightening the screw for attaching 5 is directly applied to the circuit board 117 and the circuit pattern of the circuit board 117 is peeled off.

Furthermore, in recent years, the colors of walls and the like are not only white but also various colorful colors, but a TV outlet is fixed to a single color such as white or a light cream color, and the color of colorful walls is fixed. There was a problem that the color of the TV outlet did not match.

Therefore, an object of the present invention is to provide a television outlet which can obtain a sufficient shielding effect and can be provided with a guide portion of a circuit board and which can be easily manufactured. Further, another object of the present invention is to provide a television outlet which can be threaded on the outer periphery of the plugged outer conductor and which can match the color of the attached colorful wall or the like.

[0010]

In order to achieve the above object, a television outlet of the present invention is integrally molded in a U-shaped cross section, and a television output terminal insertion hole is provided in the front portion thereof. An insulative case in which an input terminal section and an output terminal section are provided on the side plate sections on both sides of the front section, and a die-cast product having a U-shaped cross section that is fitted and fixed in the U-shaped case. Chassis, a shield cover that covers the open surface of the chassis, and shield metal fittings that cover the input terminal portion and the output terminal portion, respectively. A contact plug outer conductor that is inserted into the insertion hole of the case is integrally molded, and a circuit board to which the input terminal portion, the output terminal portion, and the television output terminal portion are connected is guided on the inner surface of the chassis. Integrated guide means It is obtained as being the mold.

Further, in the television outlet, the insertion hole of the case into which the connector outer conductor is inserted is inserted,
The decorative terminal block is replaceably fixed so as to cover the front surface of the case. Further, a rod-shaped fitting piece is formed on the inner surface side of the front surface of the case, and a claw is formed at the tip. A fitting claw is formed, and a fitting hole into which the fitting piece is fitted and a fitting hole into which the fitting claw is fitted are formed in the front surface portion of the chassis. .

According to the present invention as described above, since the shield means is provided at the input terminal portion and the output terminal portion, the shield effect can be sufficiently enhanced. Further, since the chassis integrated with the plugging outer conductor is integrally formed by die casting, it is possible to form a screw on the outer periphery of the plugging outer conductor and simultaneously form the guide means for the circuit board. can do. Further, since the decorative terminal block is attached to the front part of the case in a replaceable manner, it is possible to provide a TV outlet having a color that matches the color of the wall or the like.

[0013]

FIG. 1 is an exploded perspective view showing the structure of an embodiment of a television outlet of the present invention. 2 shows a detailed view of the chassis 10 of the TV outlet of the present invention, FIG. 3 shows a detailed view of the case 11 of the TV outlet of the present invention, and FIG. 4 shows details of the input side shield metal fitting 16 of the TV outlet of the present invention. FIG. 5 shows a method of attaching the decorative terminal block 12 in the TV outlet of the present invention to the case 11, and FIG. 6 shows an assembled view of the case 11, the chassis 10 and the shield cover 14 in the TV outlet of the present invention. FIG. 7 shows a cross-sectional view when the circuit board 13 is stored in the television outlet of the present invention.

The television outlet of the present invention will be described below with reference to FIGS. 1 to 7. As shown in FIG. 1, a main part of the television outlet of the present invention is a die-cast chassis 10 and an insulating resin case 1.
1. A decorative terminal block 12 in which various colors are prepared, a circuit board 13 in which a branch circuit is assembled, a shield cover 14 that shields the circuit board 13 by covering the open surface of the chassis 10, and an input terminal. An input side shield metal fitting 16 and an output side shield metal fitting 18 which shield the portion and the output terminal portion.

The outer conductor of the plug of the television output terminal 10-1 is integrally molded while projecting from the front surface.
Insulating resin case 1 that is also integrally molded in a U-shape on a chassis 10 that is made of a U-shape die-cast.
1 is inserted. A decorative terminal block 12 is replaceably fixed to the front surface of the case 11. A circuit board 13, which is a printed circuit board, is arranged in the chassis 10, and a shield cover 14 that covers this portion is fitted into the open surface of the chassis 10.

Further, the side plate portion 10-4 of the chassis 10
2 (see FIG. 2), a saddle metal fitting 15 for fixing a coaxial cable through which an input high frequency signal is propagated is mounted on the saddle metal fitting mounting screw portion 10-7 by a saddle metal fitting mounting screw 15-1 via a washer 15-2. (See FIG. 2). Then, the input side shield metal fitting 16 covers the input terminal piece 19 to which the core wire of the coaxial cable is attached and the saddle metal fitting 15, and the shield metal fitting mounting screw 16-.
1 is attached to the side plate portion 10-4 of the chassis 10.

The side plates 10 of the chassis 10 which face each other
3 (see FIG. 2) similarly, a saddle metal fitting 1 for fixing the coaxial cable through which the output high frequency signal is propagated
7 is a saddle metal fitting mounting screw 17 through a washer 17-2.
It is attached to the saddle metal fitting attachment screw part by -1. Then, the output terminal piece 20 to which the core wire of the coaxial cable is attached and the output side shield metal fitting 18 are attached to the side plate portion 10-3 of the chassis 10 so as to cover the saddle metal fitting 17 with the shield metal fitting attaching screw 18-1. .

The above-mentioned input terminal piece 19 is the case 1
The core wire of the coaxial cable, which is attached to one of the side plate portions of No. 1 and is inserted between the input terminal piece 19 and the pressing piece 19-1,
By screwing the holding screw 19-2, it is held between the input terminal piece 19 and the holding piece 19-1. Thereby, the core wire is connected to the input terminal piece 19. The tip of the input terminal piece 19 is inserted into the cutout window portion 10-10 (see FIG. 2) formed in the side plate portion 10-4 of the chassis 10 to be inserted into the circuit board 13.
Soldered to. Furthermore, the above-mentioned output terminal piece 20 is attached to the side plate portion 10-3 of the case 11, and the core wire of the coaxial cable inserted between the output terminal piece 20 and the holding piece 20-1 is held by the holding screw 20-. By screwing 2 together, the output terminal piece 20 and the pressing piece 20-1 are sandwiched.
As a result, the core wire is connected to the output terminal piece 20. The tip of the output terminal piece 20 has a side plate portion 10-3 of the chassis 10.
It is soldered to the circuit board 13 by being inserted through the cutout window portion formed in.

The shield cover 14 is formed by processing an elastic thin plate into a U-shape, and the engaging piece 1 bent inward is formed at the four corners of the tip of the shield cover 14.
4-1 is formed, and a pair of bent projecting pieces 14-2 is formed in a substantially central portion thereof. This engagement piece 1
4-1 is engaged with the notched shield cover engaging portion 10-14 shown in FIG. 2 when the shield cover 14 is fitted and inserted into the chassis 10, so that the shield cover 14 is attached to the chassis 1.
It works so that it cannot be easily removed from 0. In addition, the pair of projecting pieces 14-2 includes the shield cover 1
The L-shaped piece 1 shown in FIG.
It is fitted in the protruding piece fitting hole 10-9 formed in 0-15 to enhance the shield effect.

Next, a description of the chassis 10 which has not been given above will be made with reference to FIG.
0-2 is integrally molded so that the TV output terminal 10-1 is projected, but to be precise, the connector outer conductor having a screw formed on the outer periphery which constitutes the TV output terminal 10-1 is integrally molded. There is. Further, a pair of elongated rounded fitting holes 10-6 and one circular fitting hole 10-5 are provided on the front surface portion 10-.
2 is formed. The fitting hole 10-6 and the fitting hole 10
-5 includes a fitting piece 11-11 and a fitting claw 11- formed on the back surface of the front portion 11-1 (see FIG. 3) of the case 11.
8 (see FIG. 5) are respectively inserted or fitted.

Next, the structure of the case 11 shown in FIG. 3 will be described. As shown in this figure, the case 11 has a front portion 11-
1 and the side plate portion 1 extending rearward from both sides of the front portion 11-1
It is composed of 1-2 and 11-3. Then, on the side plate portion 11-2, the input terminal piece mounting portion 11-4 in which the input terminal piece 19 is mounted, and the shield metal fitting screw 16-1.
11-5 for attaching the shield metal fitting mounting screw
Are formed. Similarly, the opposing side plate portions 11-3 are also formed with an output terminal piece mounting portion to which the output terminal piece 20 is mounted and a shield metal mounting screw mounting portion into which the shield metal mounting screw 18-1 is inserted. There is.

Further, the television output terminal 10-1 is inserted into the front face portion 11-1 and the cylindrical portion 12-1 of the decorative terminal block 12 is inserted and inserted into the substantially circular terminal block fitting hole 11-.
7 are formed. In addition, as shown in FIG. 5, on the back surface of the front portion 11-1, there is one rod-shaped fitting piece 11-11,
A pair of fitting claws 11-8 having claws that engage with the tips are formed. As described above, this fitting piece 11-
Reference numeral 11 denotes a fitting hole 1 formed in the front portion 10-2 of the chassis 10 when the chassis 10 is fitted and inserted.
Although it is inserted into 0-5, since only one insertion hole 10-5 is provided, it is inserted only when the directions of the chassis 10 and the case 11 match. This can prevent the chassis 10 and the case 11 from being inserted in wrong directions.

Further, when the chassis 10 is fitted into the case 11, the fitting claws 11-8 are formed with the pair of fitting holes 1 formed therein.
It is fitted with 0-6, and the claw portion at the tip is engaged with the back surface of the front portion 10-2 of the chassis 10. As a result, the chassis 10 and the case 11 are fixed to each other. Furthermore, groove-shaped mounting frame engaging portions 11-6 are formed on both sides of the front portion 11-1 of the case 11. The mounting frame engaging portion 11-6 is a groove to which the projection formed on the mounting frame is engaged and fixed when the TV outlet 1 is mounted on the mounting frame as shown in FIG. .

Next, the shield metal fittings will be described. Since the input side shield metal fittings 16 and the output side shield metal fittings 18 have the same construction, the input side shield metal fittings 16 shown in FIG. 4 will be explained. To do. The input side shield metal fitting 16 is formed in a box shape by bending a metal plate as shown in FIG. 4, and one side surface thereof is shown in FIG.
As shown in FIG. 3, a bent portion 16-3 to which the shield fitting mounting screw 16-1 is attached is formed. Further, a fitting piece 16-6 fitted into a groove formed at the boundary between the chassis 10 and the case 11 assembled on the other side surface.
And a cutout window 16-5 for escaping the core wire of the coaxial cable. The cutout window 16-5 can also be used as a window for visual check. Also,
As shown in FIG. 4B, a coaxial cable insertion hole 16-4 in which a coaxial cable is inserted in the side surface facing the other side surface.
Are formed.

Next, the decorative terminal block 12 is attached to the front of the case 11.
Explaining the configuration for fixing the replaceable portion with reference to FIG. 5, a cylindrical portion 12-1 is formed on the decorative terminal block 12 so as to project from the back surface. The protrusion 12-2 is formed. On the other hand, case 1
In the terminal block fitting hole 11-7 into which the cylindrical part 12-1 formed in the front part 11-1 of 1 is fitted, as shown in FIG. 3, a pair of groove parts are formed so as to face each other. A pair of protrusions 12-2 are fitted and inserted in the groove.

Therefore, the decorative terminal block 12 is inserted into the terminal block fitting hole 11-7 of the case 11 by aligning the position of the protrusion 12-2 of the cylindrical portion 12-1 with the groove of the terminal block fitting hole 11-7. To go. Next, when the decorative terminal block 12 is rotated in the direction shown by the arrow in FIG. 5, the protrusion 12-2 gets over the cam piece 11-10 and abuts the abutment piece 11-9. At this time, the mountain-shaped portion of the protrusion 12-2 is the abutting piece 11-.
The decorative terminal block 12 is prevented from easily rotating in the detaching direction with respect to the case 11 by engaging with the valley-shaped groove formed between the cam 9 and the cam piece 11-10. That is, by strongly rotating the makeup terminal block 12 in the opposite direction, the makeup terminal block 12 can be removed, and the makeup terminal block 12 of a different color can be exchanged arbitrarily.

Next, the chassis 10 is fitted and fixed to the case 11 having the decorative terminal block 12 mounted thereon, and the shield cover 14 is mounted so as to cover the open surface of the chassis 10. The assembly drawing of No. 1 is shown in FIG. As shown in this figure, the television output terminal insertion hole 12- formed in the central portion of the decorative terminal block 12
The television output terminal 10-1 is located in the area 3. In this case, the circuit board 13 is housed inside the chassis 10, and a sectional view of the television outlet 1 shown in FIG. 6 is shown in FIG.

In this sectional view, the front edge of the circuit board 13 mounted in the chassis 10 is formed by a pair of board guide protrusions 10-19 which are planted on the back side of the front surface 10-2 of the chassis 10. Supported among. The pair of substrate guide protrusions 10-19 are planted in pairs on both sides of the contacting outer conductor 10-18. In addition, the circuit board 13
The side portion of the rear end is a board guide rail 10-1 shown in FIG.
It is supported within 2. As a result, the circuit board 13 can be easily mounted in the chassis 10. It should be noted that the board guide rail may be further installed at a position supporting the side edge portion near the tip of the circuit board 13.

The television output terminal 10-1 includes the plugged outer conductor 10-18, the insulating cylinder 10-16 fitted and inserted in the plugged outer conductor 10-18, and the insulating cylinder 10-16. It is composed of a core wire contact piece 10-17 attached to the. Then, one end of the core wire contact piece 10-17 is attached to the chassis 1
It is soldered and connected to the circuit board 13 mounted in the 0. It should be noted that, on the circuit board 13, the input terminal piece 19 shown in FIG. 1 attached to the input terminal piece attachment portion 11-4 and the output terminal piece 20 shown in FIG. 1 attached to the output terminal piece attachment portion 11-4 ′. Is also soldered, but is omitted in FIG.

As described above, the television outlet 1 of the present invention
Is configured, and a method of assembling the television outlet 1 will be described below. First, the circuit board 13 is mounted in the chassis 10 using the board guide rails 10-12 and the board guide protrusions 10-19, and the chassis 10 is soldered to the ground portion of the circuit board 13. Next, the insulating cylinder 10-16 having the core wire contact piece 10-17 mounted therein is inserted into the plugged outer conductor 10-18, and the tip of the core wire contact piece 10-17 is soldered to a predetermined position of the circuit board 13. . Next, the chassis 10 is fitted into the case 11 by using the fitting pieces 11-11 so as to be aligned with each other.
The chassis 10 and the case 1 by engaging the chassis 10 with the chassis 10.
1 and fit. In this case, the decorative terminal block 12 is attached to the case 11 in advance.

Next, the input terminal piece 19 and the output terminal piece 20 are attached to the side plate portions 11-2 and 11-3 of the case, respectively, and the tips thereof are soldered to the predetermined positions of the circuit board 13. Next, the shield cover guide surface 1 shown in FIG.
The shield cover 14 is fitted into the chassis 10 by sliding 0-13, and the engaging pieces 14-1 are engaged with the shield cover engaging portions 10-14. At the same time, the protruding piece 14-2 is fitted into the protruding piece fitting hole 10-9. As a result, the shield cover 14 is attached to the chassis 10 so that efficient shielding is performed.

Next, the saddle metal fittings 15 and 17 for fixing the coaxial cable are screwed to the saddle metal fitting mounting screws 15-1 and 17-1 to the saddle metal fitting mounting screw portions 10-7 and 10-7 '(not shown). Install by doing. Then, the input side shield fitting 16 and the output side shield fitting 18 are mounted so as to cover the side plate portions 10-3 and 10-4 of the chassis 10, respectively, and the television outlet 1 is assembled. When the decorative terminal block 12 is detached from the case 11, the tip end of the TV output terminal 10-1 is exposed and the F-type connector can be easily attached.

[0033]

As described above, according to the present invention, the shield means is provided at the input terminal portion and the output terminal portion.
Even if the high frequency signal has a wide band, the shield effect can be sufficiently enhanced. Further, since the chassis integrated with the plugging outer conductor is integrally formed by die casting, it is possible to form a screw on the outer periphery of the plugging outer conductor and simultaneously form the guide means for the circuit board. can do.

Further, since the decorative terminal block is attached to the front part of the case in a replaceable manner, the television outlet can be colored in a color that matches the color of the wall or the like. Also, after mounting the circuit board on the chassis and soldering the ground part, the chassis was inserted into the resin case, so there is no risk of the case melting when soldering the ground part. You can

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a configuration of an embodiment of a television outlet of the present invention.

FIG. 2 is a detailed view of the chassis of the television outlet of the present invention.

FIG. 3 is a detailed view of the case of the TV outlet of the present invention.

FIG. 4 is a detailed view of the input side shield metal fitting of the television outlet of the present invention.

FIG. 5 is a view showing a method of attaching the decorative terminal block to the case in the television outlet of the present invention.

FIG. 6 is a case of a TV outlet of the present invention;
It is an assembly drawing which assembled the chassis and the shield cover.

FIG. 7 is a cross-sectional view when the circuit board is stored in the television outlet of the present invention.

FIG. 8 shows a diagram in which a TV outlet is mounted in a box embedded in a wall or the like.

FIG. 9 is an exploded perspective view showing a configuration of a conventional TV outlet.

[Explanation of symbols]

 1 TV Outlet 10 Chassis 11 Case 12 Makeup Terminal Block 13 Circuit Board 14 Shield Cover 15, 17 Saddle Metal Fitting 16 Input Shield Metal Fitting 18 Output Shield Metal Fitting 19 Input Terminal Piece 20 Output Terminal Piece

Front Page Continuation (72) Inventor Yasumasa Suzuki 4-7 Kitamachi, Warabi-shi, Saitama, Japan Atena Co., Ltd. Warabi factory

Claims (3)

[Claims] 1. It is integrally molded in a U-shaped cross section,
A TV output terminal insertion hole is provided in the front part, and an insulating case in which the input terminal part and the output terminal part are provided in the side plate parts on both sides of the front part and the U-shaped case. A chassis made of die-cast having a U-shaped cross section that is inserted and fixed, a shield cover that covers the open surface of the chassis, and shield metal fittings that respectively cover the input terminal portion and the output terminal portion. The front surface of the chassis is integrally molded with a plug outer conductor that is inserted from the front surface into the insertion hole of the case, and the inner surface of the chassis includes the input terminal portion, the output terminal portion, A television outlet, wherein guide means for guiding the circuit board to which the television output terminal portion is connected are integrally molded. 2. The decorative terminal block is replaceably fixed to the insertion hole of the case through which the plugged outer conductor is inserted so as to cover the front surface of the case. TV outlet. 3. A rod-shaped fitting piece and a fitting claw having a claw formed at the tip are formed on the inner surface side of the front surface of the case, and the fitting piece is fitted into the front surface of the chassis. 3. The television outlet according to claim 1, wherein a fitting hole and a fitting hole into which the fitting claw is fitted are formed.