JPS6384001A - Flash type transformer - Google Patents

Abstract

PURPOSE:To simply mount a transformer without impairing an external appearance in a room by securing a mounting plate to a case which contains coils, and fixing the case through the plate in a flash box buried in a wall. CONSTITUTION:Coils and a core, not shown, are contained at a center 11 in a case 2. Both terminals A, B of a primary coil, not shown are composed of SL terminals 12a, 12b, and contained in a terminal container 9. The terminals C, D, E, F of a secondary coil, not shown, are composed of EG terminals 13c, 13d, 13e, 13f and contained in a terminal container 10. A mounting plate 1 is secured onto the upper surface of the case 2. The case 2 is secured through the plate 1, a supporting rod 16 and a screw 17 in a flush box 15 buried in the wall 14 of a room. Thus, it can be mounted simply without impairing an external appearance.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to a power transformer for a small power circuit for residential use, and particularly to a structure for embedding the transformer in a wall to facilitate installation in a residential house.

[Prior Art] Conventional small-power power supply transformers for residential use have been mounted exposed on a wall surface or the like, or mounted on a switchboard. In addition, the terminals of conventional power transformers all use EG terminals in which the ends of the lead wires are connected and fixed with screws or the like in order to connect lead wires made of stranded wires.

However, in such a conventional mounting structure for a small-power power transformer, the power transformer is exposed on a wall, etc., which spoils the aesthetics of the room, and also requires a specially designed power distribution board. In addition, since all the connection terminals used EG terminals, it was troublesome to connect the 1oov power supply terminal at the primary input end.

[Object of the Invention] The present invention has been made in view of the drawbacks of the prior art, and provides a mounting structure that does not require a special mounting location exposed on a wall or a switchboard and does not spoil the aesthetics of the room. The purpose is to provide an embedded transformer that is easy to install.

[Embodiment Fig. 1 is a perspective view of a small transformer according to the present invention;
(a) The figure shows the top surface, and (b) shows the bottom surface. A primary coil, a secondary coil, etc. (not shown) are housed in a case 2 whose upper surface is covered by a mounting plate 1. The mounting plate 1 is a multi-use plate of a common size for mounting household electrical outlets, switches, etc. A case 2 is fixed to this mounting plate 1 by known means (not shown). 3 is a screw through hole for mounting and fixing, 4 is a screw hole for attaching a decorative board, and 5 is a screw for a secondary side terminal.

The circuit inside this small transformer is shown in Figure 2.

The primary coil 6 wound around the iron core 7 has two terminals A and B of 100V and OV. Secondary coil 8 is 12V,
Four terminals C, D of I0V, 8V and OV.

It has E and F.

An exploded view of the terminals inside the case 2 is shown in FIG. 3.Both terminals A and B of the primary coil 6 shown in FIG. 2 are SL terminals 12a,
12b. SL terminal 12a.

12b has an elastic locking piece (not shown), and when the lead wire is inserted, the end of the lead wire is fixedly held in the automatic fishing rod by this elastic locking piece, and when the lead wire is pulled out, the suppressing piece (
(not shown) to release the engagement of the elastic locking piece and remove the lead wire. This SL terminal 12a
, 12b are accommodated in the primary coil terminal storage section 9 within the case 2. Each terminal C, D of the secondary coil 8 shown in FIG.
, E, F are EG terminals 13c, 13d, 13e, respectively.
13f. EG terminals 13c, 13d,
13e and 13f are screws 5 for connecting and fixing the ends of the lead wires, and lead wires such as stranded wires can also be connected thereto. Each EG terminal 13c, 13d, 1
3e and 13f are secondary coil terminal storage parts l inside case 2.
It is housed in O. The coil and core (not shown) are housed in a transformer core/coil housing 11 in the center of the case 2 . The above-mentioned mounting plate is fixed to cover the upper surface of the case 2.

The mounting structure of this small transformer is shown in Figure 4.

An embedded box 15 is embedded in a wall 14 in the room.

This embedded box 15 is of the same type as an embedded box for wiring such as household electrical outlets and switches. A support rod 16 having a screw formed therein protrudes and is fixed in the embedded box 15. The mounting plate 1 to which the transformer case 2 is fixed is fixed to the support rod 16 with screws 17. 18 is a decorative board. 100V and Ov not shown
The primary lead wire (earth) is inserted through an opening (not shown) on the bottom of the case and connected to the SL terminals 12a and 12b.
(Fig. 3). The secondary lead wire (not shown) is connected to the EG terminals 13c to 1 through the screws 5 on the side of the case.
3f (Fig. 3).

[Effects of the Invention] As explained above, in the embedded transformer according to the present invention, the terminal of the primary coil is constituted by the SL terminal, and the connection plate for mounting inside the embedded box of a household switch, etc. It is installed by being embedded in the wall via a mounting plate of the same size. Therefore, a home-use built-in box can be used as a mounting storage space, and since it is a built-in structure, the aesthetic appearance of the room can be maintained. Furthermore, since the primary side lead terminal can be easily connected, the installation work can be easily and smoothly performed.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a perspective view of a small transformer according to the present invention viewed from the top and bottom, Fig. 2 is a circuit diagram of the small transformer according to the present invention, and Fig. 3 is a small scale transformer according to the present invention. Exploded diagram of transformer, 4th
The figure is a sectional view showing a buried structure of a small transformer according to the present invention. 1: Mounting plate, 2: Case, 6: Primary coil, 8: Secondary coil, 12a, 12b: SL terminal, 13c, 13d, 13e, 13f: EG terminal, 14: Wall, 15: Embedded box. Patent Applicant: Toshiba Electric Materials Co., Ltd. Agent, Patent Attorney: Tatsuo Ito, Patent Attorney: Tetsuya Ito (Volunteer to write amendments to Figure 3 procedures) October 29, 1985

Claims (1)

[Claims] 1. A primary coil connected to the SL terminal and a secondary coil connected to the EG terminal are housed in a case, a mounting plate is fixed to the case, and the case is buried in a wall. An embedded type transformer, characterized in that the transformer is housed in an embedded box, and is fixed in the embedded box via the mounting plate. 2. A patent claim characterized in that the primary coil has two terminals of 0V and 100V, and the secondary coil is a power transformer for a small power circuit having four terminals of 0V, 8V, 10V, and 12V. Embedded transformer according to item 1 of the scope. 3. The embedded transformer according to claim 1 or 2, wherein the mounting plate is fixed by screws to a support rod protruding into the embedded box. 4. Any one of claims 1 to 3, wherein the embedded box is an embedded box for residential electrical terminal wiring such as an outlet, a switch, etc.
Embedded transformer as described in section.