JP3665361B2 - Electronics - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an electronic device used as a booster, a converter or the like for joint television reception.
[0002]
[Prior art]
In this type of electronic equipment, for example, as shown in Japanese Utility Model Publication No. 57-38868, an AC cord is led out from one side of the case body to the outside, and an input cord is provided nearby. Alternatively, a terminal for connecting an output coaxial cable is provided. Therefore, electronic circuits such as an amplifier circuit and a frequency conversion circuit are arranged on one side of the case as much as possible so that the high frequency impedance characteristics are not disturbed. A power supply circuit made up of large parts such as a transformer and an electrolytic capacitor is arranged on the other side of the case body.
[0003]
[Problems to be solved by the invention]
However, in order to perform the above arrangement, it is necessary to wire the AC cord from one side of the case body toward the other inside the case. In addition, the wiring must be stably fixed so that the fluctuation of the AC cord does not adversely affect the electronic circuit on one side of the case, such as disturbance of high-frequency impedance. Therefore, it was fixed in the case using a member of the kind of the staple. This has led to an inconvenience of installation work due to an increase in assembly process, an increase in the thickness or width of electronic equipment, and an increase in size. Accordingly, the present invention has been made to solve the above-mentioned problems. The object of the present invention is (1) easy assembly to stably fix the AC cord, and (2) substantial thickness or The purpose is to provide an electronic device that can reduce the width to prevent weight increase and can be efficiently installed in a distribution box or the like.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides an electronic device including an AC cord lead-out portion on one side of a case body. A concave groove extending from one side to the other is formed, and protruding pieces alternately protrude from opposite side walls of the concave groove, and one side wall, a protruding piece on the other side wall side, and the other side wall and one side wall are provided. The gist is an electronic device that holds the AC cord between the protruding pieces on the side.
[0005]
[Action]
When storing the AC cord in the concave groove provided on the case body side for storing the AC cord, one or both of the AC cords are fixed to the case main body. Next, the AC code corresponding to the groove is accommodated in the groove while meandering along the protruding piece. Due to the elasticity of the AC cord, the AC cord fits between one side wall and the other side wall protruding piece of the concave groove, and the other side wall and one side wall side protruding piece so that it does not move easily. become.
[0006]
【Example】
DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, drawings showing embodiments of the present invention will be described. FIG. 1 is a partially exploded front view of a TV group reception booster exemplified as an electronic device, and FIG. 2 is a rear perspective view thereof. FIG. 3 is a front view of a booster attached to a plate wall surface of a building, and FIG. 4 is a sectional view thereof. In these figures, reference numeral 1 denotes a case body, which is formed in a box shape, for example, formed by die-casting an aluminum alloy and opening the front side. In addition, as a material of the case main body 1, synthetic resins, such as ABS resin, can also be used. Reference numeral 2 denotes a bottom wall provided in the case body 1. Reference numeral 3 denotes an AC cord having an AC plug for connecting a commercial power source at the tip. As AC code 3, what is commonly referred to as VCTFK, a vinyl cap tire oval code with an AC plug etc. is used, but other types can be used as long as the cord is elastic. This code may be used. Reference numeral 4 denotes a lead-out portion of the AC cord 3 provided on the bottom surface side of the case body 1. Reference numeral 5 denotes a back wall exemplified as the installation portion side in the box-shaped case body 1, and 6 denotes a side wall of the case body 1. Reference numeral 7 denotes a coaxial cable introducing portion for TV signal input / output formed in a cylindrical shape. A concave groove 8 is provided on the back wall 5 inside the case body 1. A projecting piece 10 is provided on the measuring wall 9 of the concave groove 8. The protruding pieces 10 of the left side wall 9 and the protruding pieces 10 of the right side wall 9 are alternately provided as clearly shown in FIG. The protruding piece 10 may be wedge-shaped and protruded from the center of the groove 8. The bottom wall 2, the back wall 5, the side wall 6, the coaxial cable introduction part 7, the groove 8, and the protruding piece 10 are simultaneously formed by die casting when the case body 1 is formed.
[0007]
Reference numerals 11a and 11b denote case covers, which are made of a synthetic resin material such as ABS resin, and are attached to the case body 1 and fixed. Reference numeral 12 denotes a power supply circuit provided in the upper space of the case. The power supply circuit 12 is formed by mounting electronic components 15 such as a power connector 14, an electrolytic capacitor, a ceramic capacitor, and a power transformer on a printed circuit board 13 and electrically and mechanically connecting them. Reference numeral 18 denotes a high-frequency circuit unit in which an amplification circuit, a frequency conversion circuit, and the like are built in a nickel-plated iron plate case. The high frequency circuit unit 18 is attached to the case main body 1 by means of an attachment screw 17. 19a and 19b are connecting seats, which are used as a terminal for inputting a high frequency signal to the high frequency circuit unit 18 and a terminal for outputting a high frequency signal from the high frequency circuit unit 18, respectively.
[0008]
Reference numeral 20 shown in FIG. 4 denotes a hooking piece provided on the rear surface of the case. As shown in the figure, the case 11 covers the case wall 11b such as a plate wall of a building or a wall underneath, or a concrete wall. Used when attached to a wall such as a wall in a distribution box.
Reference numeral 21 denotes a pedestal for a mast mounting bracket provided in a state of bulging toward the plate wall surface as shown in FIG. 2 with respect to the outside of the case back wall 5. 21a shows the peripheral part of the base 21 made to contact | abut on the wall surface of the said building.
The electronic device of the present embodiment can be mounted on the mast by fixing the mast mounting bracket to the base 21 using the screw hole 22. Reference numeral 23 denotes a bulging portion provided as shown in FIGS. 2 and 4 with respect to the outside of the case back wall 5, which is outside the portion where the concave groove 8 is formed inside the case back wall 5. The base 21 and the bulging portion 22 are integrally formed when the case body 1 is die-cast. The height of the peripheral portion 21a and the bulging portion 23 of the pedestal 21 is substantially the same, and is designed to be more stably attached to the flat plate wall surface as shown in FIG. Reference numeral 24 denotes a screw receiving portion used when the electronic device is attached to the plate wall surface with a wood screw or the like. In FIG. 4, reference numeral 25 denotes a wall mounting bracket, which is shaped like a flat Ω-shape, and is fixed to the plate wall surface in advance and used to hook the hook piece 20.
[0009]
Next, an assembly method of the electronic device will be described with reference to FIG. Assume that the power supply circuit 12 and the high-frequency circuit unit 18 are assembled in advance as work-in-progress products.
(1) The power supply circuit 12 is housed and fixed in the upper space of the case body 1.
(2) For the AC cord 3 having the AC plug 30 at the tip and the overhang 31, the groove 32, and the flange 33 near the base, the base is processed and the electrical connector 34 is attached.
(3) The AC cord 3 is inserted into the through hole 35 in the bottom wall from the connector 34 side.
(4) Connect the connector -34 to the connector -14.
(5) The AC cord 3 is pulled inward in the case until the collar portion 33 is caught on the periphery of the through hole 35 in the bottom wall 2, and the U-shaped stopper is placed in the groove 32 that appears in the bottom wall 2. The AC cord 3 is fixed to the bottom wall 2 by fitting the metal fitting 40.
(6) The AC cord 3 is accommodated in the groove 8 while meandering along the protruding piece 10. In this case, it is easy to bend when the narrow portion of the AC cord 3 is housed in the case inner side. When the above-described storage of the AC cord 3 is completed up to the notch 42 provided in the partition plate 41 in the case body 1, the mounting operation of the AC cord 3 is completed.
(7) The high-frequency circuit unit 18 is held in the case body 1 with the high-frequency circuit unit 18 in a state where the plug seats 19a and 19b are inserted into the through holes 43a and 43b of the bottom wall.
(8) Cover the case body 1 with the case 11.
[0010]
【The invention's effect】
As described above, according to the present invention, it is possible to provide an electronic device that can be easily assembled because the AC cord is stably fixed. Moreover, since the bulging portion 23 having the concave groove 8 for storing the AC code 3 inside is provided in a state of bulging outside the back wall 5, there is a risk of substantially increasing the thickness of the device. There is an advantage that it can be made small, and an electronic device that can be easily mounted even in a narrow space can be provided.
[Brief description of the drawings]
FIG. 1 is a partially cutaway front view of an electronic device with a lid removed and a high-frequency circuit unit separated.
FIG. 2 is a rear perspective view of the electronic device.
FIG. 3 is a front view of a booster attached to a plate wall surface.
4 is a cross-sectional view taken along line AA of the booster in FIG. 3. FIG.
FIG. 5 is an exploded perspective view of a part of the electronic device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Case main body 2 Bottom wall 3 AC cord 4 Lead-out part 8 Groove 9 Side wall 10 Projection piece

Claims (1)

In an electronic device having an AC cord (3) lead-out part on one side of the case body (1), on the outside of the back wall (5) of the case body (1) , A pedestal (21) formed in a bulging shape for contact is provided, and on the outside of the back wall ( 5 ) provided with the pedestal (21) , an AC cord ( 3 ) is stored inside . A bulging portion (23) having a concave groove ( 8 ) is provided extending from one side to the other along the outer surface of the back wall ( 5 ) and bulging outward ;
Furthermore, the recessed grooves equip the inner side of the bulging portion (23) (8), Ke - nest inside is opened in the main body (1) Ke - from the inside of the scan body (1) in the concave groove (8) The AC cord ( 3 ) can be stored, and the concave groove ( 8 ) has a concave groove ( 8 ) for fixing the AC cord ( 3 ) stored inside the concave groove ( 8 ). 8) A protruding piece (10) is projected from the opposite side wall (9) to the opposite side wall (9), and the AC core is accommodated in the groove ( 8 ) by the protruding piece (10). An electronic device characterized in that it holds the door (3).

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