JP2550330B2 - Embedded outlet with noise filter - Google Patents

Description

TECHNICAL FIELD The present invention relates to an embedded outlet with a noise filter used as an embedded wiring device.

[Background Art] In recent years, so-called office automation has been advocated, and as the frequency of use of computer-related equipment in offices has increased, the noise generated from these equipment leaks to the power supply line, or the noise from the power supply line to the equipment is reduced. Mixing is a problem. In order to prevent such noise, a noise filter has been conventionally provided, but a normal noise filter is designed to be inserted between an outlet and a device and is exposed to the outside. There is a problem that it looks bad and gets in the way again.

As a solution to this point, a noise filter having a mounting dimension equivalent to that of a standardized ready-made embedded wiring device mounted on a wall surface or the like is considered. That is, as shown in FIG. 4, the noise filter is housed in a case 1 having a mounting frame 2 that can be attached to a ready-made embedding box, and is embedded in a wall surface or the like. If it is attached to the embedded box, the noise filter will not be exposed to the outside and the appearance will be improved, and the noise filter will be fixed in place and will not be an obstacle.
By the way, if this noise filter is newly installed,
A noise filter and an embedded outlet can be provided at the same time by using an embedded box to which the individual mounting frames 2 can be attached. However, when installing the noise filter in place of the existing embedded outlet, the outlet is There is a problem in that the power cannot be secured and the equipment must be fed from another place.

[Object of the Invention] The present invention has been made in view of the above points, and an object of the present invention is to provide a plug blade having at least one opening even when it is used by replacing an existing embedded outlet. An object is to provide an embedded outlet with a noise filter that can secure an insertion port.

DISCLOSURE OF THE INVENTION (Structure) An embedded outlet with a noise filter according to the present invention,
It has a case attached to a mounting frame for an embedded wiring device that is attached to an embedded box, and an outlet part having at least one opening for inserting a blade is provided on the front surface of the case, and an outlet part and a power source are provided. The noise filter to be inserted into the power line between the two is housed in the case, and the back of the case is provided with the feed terminal electrically directly connected to the outlet part. By installing the noise filter in the case attached to the mounting frame and providing the outlet part in the case,
If the noise filter and the power supply unit are installed in the same embedded box, and a sending outlet is provided to connect a normal outlet to the sending terminal, the noise filter can be easily inserted into the other outlets. Is something that can be done.

(Embodiment) As shown in FIGS. 1 and 2, the case 1 is attached to a mounting frame 2 attached to a ready-made embedding box which is embedded in an embedding hole provided in a wall surface or the like. It The case 1 is formed by combining a body 11 and a cover 12 both made of synthetic resin. The body 11 and the cover 12 are
Attach the pair of screws 3 inserted from the back of the body 11 to the mounting frame 2
It is connected by screwing into the case, and at the same time, the case 1
Are joined to the mounting frame 2. The mounting frame 2 is formed with an elongated hole 4 into which a box screw for mounting the mounting frame 2 in the embedded box is inserted, and a plate screw for mounting the decorative plate on the mounting frame 2 is screwed into the mounting frame 2. The holes 5 are formed.
A pair of blade receiving ports 6 into which plug blades of the plug are inserted and a ground receiving port 7 into which a ground terminal of the plug is inserted are opened on the front surface of the cover 12.

A partition wall 13 divides the inside of the body 11 into a filter storage chamber 14 and an outlet storage chamber 15. The outlet storage chamber 15 is further divided into five chambers 15a to 15e.
In the filter storage chamber 14, a transformer 21 formed by winding a conductive wire around a toroidal core, a pair of capacitors 22 and 23,
A varistor 24 as a surge absorber is stored. One end of each of the primary side and the secondary side of the transformer 21 is connected to a pair of left and right conductive plates 25 and 26, respectively, and the capacitor 22 and the varistor 24 are connected to the conductive plates 25 and 26, respectively. . Both conductive plates 25 and 26 are introduced into the outlet storage chamber 15 along the inner peripheral surface of the side wall of the body 11. A pair of left and right conductive plates 33 and 34 having blade receiving springs 31 and 32 are arranged in the first chamber 15a and the second chamber 15b of the outlet storage chamber 15, respectively. A part of it extends over the partition wall 13 and projects into the filter storage chamber 14. The remaining terminals of the primary side and the secondary side of the transformer 21 are connected to this projecting portion, and a capacitor 23 is connected in a straddling manner. Conductive plate
The first chamber 15a and the second chamber 1 are provided in a part of 25, 26 and the conductive plates 33, 34.
Terminal plates 25a, 26a, 33a, 34a are provided to face 5b, respectively. Locking springs 27, 35 are arranged on the terminal plates 25a, 26a, 33a, 34a, respectively, and a release button 36 for operating the pair of locking springs 27, 35 is arranged in the body 11. In this way, the terminal plates 25a, 26a, 33a, 34a, the locking springs 27, 35 and the release button 36
And form a quick-connect terminal. The locking spring 27 on the side of the conductive plates 25a, 26a forms an input terminal, and the conductive plates 33a, 34a
The locking spring 35 on the a side forms the output terminal. By the way, a part of each conductive plate 33a, 34a has a third chamber 15c and a fourth chamber 15d, respectively.
And a conductive plate having a blade receiving spring 41 for grounding.
Opposite part of 42. Capacitors 43 and 44 are connected between the conductive plates 33a and 34a and the conductive plate 42, respectively. The ground blade receiving spring 41 is housed in the fifth chamber 15e. Further, a part of the conductive plate 42 forms a terminal plate in the fifth chamber 15e, and forms a quick-connect terminal together with the pair of locking springs 46 and the release button 47. With the above configuration, the noise filter NF is inserted between the input terminal IN and the blade receiving springs 31, 32 as shown in FIG. Also, since the output terminal OUT is provided at the same potential as the blade receiving springs 31, 32, use the output terminal OUT as a sending terminal, and connect a normal outlet to this output terminal OUT, so that noise will be generated in other outlets. A filter NF can be inserted.

[Effects of the Invention] As described above, the present invention has a case attached to a mounting frame for an embedded wiring device attached to an embedded box,
At the front of the case is provided with an outlet part with at least one opening for inserting a blade, and a noise filter to be inserted into the power supply line between the outlet and the power supply is housed inside the case, and on the back of the case The outlet terminal is electrically connected directly to the outlet,
When the noise filter is provided, if the outlet of the present invention is attached to the embedded box instead of the existing outlet, the noise filter and the outlet can be installed at the same time. In addition, since the outlet portion is provided with the feed terminal electrically directly connected, there is an advantage that the noise filter can be inserted into the power line of the added outlet by connecting the outlet terminal to the ordinary outlet. .

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is an exploded perspective view of the same, FIG. 3 is a circuit diagram of the same, and FIG. 4 is a perspective view showing a conventional example. 1 is a case, 2 is a mounting frame, C is an outlet, and OUT is an output terminal.

Claims (1)

(57) [Claims] 1. A case having a case attached to a mounting frame for an embedded wiring device attached to an embedded box, the front side of the case having an outlet portion having at least one mouth blade insertion opening, A noise filter to be inserted into a power supply line between an outlet and a power supply is housed in a case, and a feeding terminal electrically connected directly to the outlet is provided on the back of the case. Embedded outlet with noise filter.