JPS63226107A - Recessed type noise filter - Google Patents

Abstract

PURPOSE:To imbed a noise filter while using a ready-made mount frame by forming a locking hole to lock a pawl projected to the inner circumferential face of the metal-made mount frame so as to mount the device to the metal- made mount frame to the outer face of the device. CONSTITUTION:The locking pawl 34 of the assembling fixture 33 of the noise filter 3 is engaged with the locking recessed part 22 to fix the noise filter 3 to the mount frame 2. In this case, the swollen part 36 at the upper part of the noise filter 3 is exposed to the front face side from the opening 23 of the mount frame 2. The lock recessed part 37 is formed by the mount fixture 33 at both sides of the swollen part 36 of the device 30 and in fitting it to the metallic mount frame, the claw formed at the inside of the metallic mount frame is engaged. The noise filter 3 is provided with two kinds of locking means so as to be locked and fixed to two kinds of resin-made and metal-made mount frames 2a being the standard. Thus, the change in the installed location is attained comparatively freely by utilizing the ready-made mount frame 2 to improve the workability.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field 1] The present invention relates to an embedded noise filter that cuts noise superimposed on a power supply supplied to an 0Afi device or the like.

[Background Art] In recent years, with the spread of OAI percentage devices and the like, a noise filter that cuts noise superimposed on a power supply is often required. As such a noise filter, a power strip 6 with a built-in noise filter circuit that is plugged into an existing outlet 5 can be used as shown in Figure 7, or a power strip 6 with a built-in noise filter circuit can be used as shown in Figure 8. Later, a built-in noise filter 8 was installed in the OA equipment 7. However, in the former case, since the power strip 6 is connected to the existing outlet 5, it often spoils the aesthetics and becomes a nuisance for the user. Furthermore, in the case of the noise filter 8, which is installed after the fact, as in the latter case, there is a problem in that the installation work is time-consuming.

[Object of the Invention 1] The present invention has been made in view of the above-mentioned points, and its object is to provide an embedded noise filter that does not impair the aesthetic appearance and is easy to install.

[Disclosure of the Invention 1 (fR construction) The present invention incorporates a noise filter circuit for removing noise superimposed on a power supply into a body formed in a dimension module of a ready-made wall-mounted wiring device, and incorporates a noise filter circuit for removing noise superimposed on a power supply, When installing using a resin mounting frame, a plurality of locking 1F claws are attached to the synthetic resin mounting frame by locking into the locking holes drilled in the synthetic resin mounting frame. When installing the vessel on the wall using a metal mounting frame, the claws protruding from the inner circumferential surface of the metal mounting frame can be locked to attach the metal body to the wall. A locking hole for attaching to the mounting frame is formed on the outer surface of the container, so that the noise filter can be buried in the wall using the mounting frame, and can be installed using a wall-mounted wiring device without spoiling the aesthetics. By doing so, the noise filter can be easily mounted on the wall surface, and the wiring device can also be mounted on the wall surface using either a synthetic resin or metal mounting frame.

(Example) The present example will be described below with reference to the drawings. First, a wall mounting device for mounting the embedded noise filter 3 on a wall will be explained according to FIG. This wall mounting device is installed on wall 4.
A wall box 4 buried in a recess 42 formed in 1.
It is constructed of a mounting frame 2 that is mounted on the wall box 4, a plate 1 that is mounted on the entire surface of the mounting frame 2, and the like. In this type of wall mounting device, a mounting frame 2a made of synthetic resin standardized by JIS is generally used. The mounting frame 2a has box screws 45 inserted into the insertion holes 21 that are bored at both ends thereof.
By screwing the box screw 45 into the screw hole 44 formed in the tongue piece 43 of the wall box 4, it is attached to the opening surface of the recess 42 of the wall box 4. The elastic mounting portions 24 on both sides of the mounting frame 2 are provided with three interlocking IL holes 22, which are a pair of interlocking holes 22, to which one end side of a general one-module size noise filter 3 can be mounted. In addition, this mounting frame 2
An engagement hole (not shown) for attaching the other end of the noise filter 3 is also formed on the side opposite to the attachment portion 24 of the noise filter 3 .

The noise filter 3 of this embodiment can be housed in the above-mentioned synthetic resin mounting frame 2a, and can be superimposed on a power source in a container body 30 formed in a dimension module of a wall-mounted wiring device. It is formed by incorporating a noise filter circuit that removes noise, and in this embodiment, it is formed by one module of wiring equipment as shown in Fig. 2, or two modules as shown in Fig. 3. Use what was given.

The noise filter 3 having a size of 1 module shown in FIG. 2 will be explained. The container body 30 is formed into upper and lower parts, and a rectangular bulge 36 is formed in the center of the top surface of the upper part. Assembly metal fittings 33 are used to connect the upper and lower parts of the bulging portion 36 on both sides, and each have a pair of locking claws 34 that are engaged with the locking recesses 22 of the mounting frame 2. The locking claw 34 of the assembly fitting 33 of this noise filter 3
The noise filter 3 is fixed to the mounting frame 2 by being engaged with the engagement recess 22. At this time, the upper bulging portion 36 of the noise filter 3 is exposed to the front side from the opening 23 of the mounting frame 2.

Furthermore, locking recesses 3 are provided on both sides of the bulging portion 36 of the vessel body 30.
7 is formed by an assembly fitting 33, and when it is attached to a metal mounting frame (not shown), a claw formed inside the metal mounting frame is fitted into the metal mounting frame. In this way, this noise filter 3 is provided with two types of locking means so that it can be locked and fixed to two types of standardized mounting frames 2 a and 2 b made of resin and metal. Therefore, by using the existing mounting frame 2, the mounting location can be changed relatively freely, improving work efficiency. Furthermore, since a special mounting structure, such as a dedicated wiring box, is not required, the overall cost can be reduced.

In addition, Fig. 3 shows a 2-module type noise filter 3.
b, and the above 1 module type noise filter 3
It is twice the size of a, and the position of the catch 1 pawl 34 is set to 2.
1 above except that it is formed in the position for the module type.
It is almost the same as the monoyl type.

The plate 1 arranged on the front side of the mounting frame 2 and the noise filter 3 is composed of a plate frame 12 and a plate cover 11. The plate frame 12 is fixed to the mounting frame 2 by screwing the plate screw 13 inserted through the insertion hole 14 bored into the inner circumferential side of the plate frame 12 into the tapped hole 25 of the mounting frame 2. . Furthermore, four engagement grooves 15 are formed on the inner peripheral edge of the plate frame 12.
A fixing piece 16 having a hook-shaped tip and having elasticity is formed integrally with the side edge of the plate cover 11. By attaching this plate cover 11 to the plate frame 12, the upper part of the noise filter 3 is exposed through the opening window 17 of the plate cover 11, and a dark gap between the plate frame 12 and the exposed part of the noise filter 3 is opened. Read a book. A power display section 31 that displays the power supply state and an operation display section 32 that displays that the noise filter 3 is operating may be provided on the upper surface of the bulge 36 exposed from the plate 1.

The circuit configuration of the noise filter 3 is shown in FIG.

This embodiment is used in an 0Afi device equipped with a ground wire for safety. - The terminals A, A2 on the secondary side are connected to the terminal BITB2 on the secondary side via the toroidal coil L, and a surge absorber (
ZNR) Zl and capacitor C9 are connected in parallel, capacitor C2 is connected between terminals B, , B2, and further between both terminals B, , 82 and the ground line directly connected to ground terminal A 31 B:l. Capacitors C1 and C4 are connected to the terminals. In other words, the surge absorber Z1 absorbs transient noise such as lightning surges, and the toroidal coil L and capacitors 01 to C1 absorb power supply noise supplied to the primary side terminals A, A2, 0A11, etc. Alternatively, it is designed to absorb equipment noise supplied from the 0AII device to the power supply side.

FIG. 1 shows how the circuit components are housed in the container 30. Note that the noise filter 3a shown in FIG. 1 is of a two-module type, and the upper and lower divided body 30 are connected by engaging the engaging claws 38 and the engaging holes 39 without using the assembly fittings 33. The idea is to do it together. This noise filter 3 has negative terminals A1 to A3 and secondary terminals I3. A surge absorber Z1 and a capacitor 0 are directly attached to the toroidal coil to a plurality of electrically conductive connecting fittings 50 each having a different shape, each having a connecting mechanism for connecting the external wire of B3.
1 to C1 are to be attached. Then, by assembling each component while attaching it to the connecting fitting 50 which is divided into a plurality of parts, a terminal is formed. A plurality of communication holes 52 communicating with the lower surface side are bored in the bottom surface of the housing section 51 for the circuit components and the connection fittings 50 of the device body 30, and the connection fittings 50 are assembled at the positions of the communication holes 52. terminals A, -A3. B, to B3 are provided. That is, the connecting terminal portion 54 of the connecting fitting 50 is inserted into the communicating hole 52, and the C-shaped spring body 53 that is electrically connected to the connecting fitting 50 is installed in the communicating hole 52, and the The core wire of the power supply @5G, etc. inserted from the bottom side is clamped and fixed mechanically and electrically.

Then, the 2-module type noise filter 3 is attached to a wall-mounted wiring device, and the power outlet installed in the 1-module size body 30 is connected to the noise filter 3. Shown in Figure 4. In this way, in the case of new installation work, when it is known in advance that there is an outlet 5 that requires a noise filter 3, by connecting the Funcent 5 and the noise filter 3 as described above, 0AIII appliances etc. can supply noise-free power to the In addition, noise 3 can be added to the wall box 42.
A standardized mounting frame 21 that can be mounted such as: Because it can be mounted, the noise filter 3 can be embedded in the wall surface 41, and it will not spoil the aesthetics like a table tap 6, take up space, or get caught in the foot. It does not interfere with the user. Moreover, since it is easy to install on the standardized mounting frames 2a and 2b, 0Aff
Installation does not take much effort, unlike the case where a built-in noise filter 8 is installed for each device.

[Effect of the Invention 1] As described above, the present invention incorporates a noise filter circuit for removing noise superimposed on the power supply into the body formed in the dimension module of a ready-made wall-mounted wiring device, When installing using a resin mounting frame, a plurality of locking claws are attached to the synthetic resin mounting frame by locking into the locking holes drilled in the synthetic resin mounting frame. In addition to protruding from the side of the body, when attaching to the wall surface using a metal mounting frame, the claws protruding from the inner circumferential surface of this metal mounting frame are locked to attach the body to the metal mounting frame. Since a locking hole is formed on the outside of the container to attach it to a wooden mounting frame, the noise filter can be buried in the wall using a ready-made mounting frame. By using a ready-made mounting frame like this, you can easily mount the noise filter on the wall, which is similar to when installing a built-in noise filter in each OA device. It does not take much time to install, and the body has locking claws and locking recesses that can be installed on either synthetic resin or metal mounting frames, so you can use either frame. This has the effect that even a conventional wall mounting device can be mounted on a wall.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of an embodiment of the present invention as a 2-monoyl type, Fig. 2 is an external perspective view of the 1-module type shown above, and Fig. 3 is an external appearance of the 2-module type shown above. A perspective view, FIG. 4 is an installation explanatory diagram showing how the same as above is attached to a wall, FIG. 5 is a circuit diagram of the noise filter same as above,
FIG. 6 is an exploded perspective view showing a wall mounting device for attaching the same, and FIGS. 7 and 8 are explanatory views showing conventional examples. 3 is a noise filter, 22 is a locking hole, 30 is an integral part of the container 11, 34 is a locking claw, 37 is a locking recess, and 41 is a wall surface.

Claims (3)

[Claims] (1) Dimensions of a ready-made wall-mounted wiring device When a noise filter circuit that removes noise superimposed on the power supply is built into the body formed in the module, and it is installed on the wall using a synthetic resin mounting frame. , a plurality of locking claws are provided protruding from the side of the container body to attach the container body to the synthetic resin mounting frame by locking into the locking holes drilled in the synthetic resin mounting frame, and the above-mentioned When installing on a wall using a metal mounting frame, the locking holes for attaching the body to the metal mounting frame can be secured by locking the claws protruding from the inner circumferential surface of the metal mounting frame. An implantable noise filter characterized by being formed on the external surface of the body. (2) The embedded noise filter according to claim 1, characterized in that a noise filter circuit is built into a container in which the size module is formed into one module size. (3) The embedded noise filter according to claim 1, characterized in that a noise filter circuit is built into a container body in which the size module is formed into a two-module size.