JPH0129775Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a power transformer protection device configured to protect live parts of a power transformer.

[Technical background of the invention] Generally, the primary side of the main body of a power transformer installed in an electronic device, which is directly connected to a commercial power source, that is, the so-called active part, is sometimes covered with a cover for safety reasons.

That is, if the live part of the power transformer main body is shot by other parts in the electronic device, such as a dislodged spring or cord wire, the power transformer main body 1 will be damaged.

In order to prevent this failure, as shown in FIG. 1, a protective cover 2 is provided to cover the live parts of the power transformer body.

As shown in Fig. 1, this protective cover 2 is held by a plastic rivet 4 on a mounting plate 3 on which the power transformer main body 1 is attached, or the protective cover 2 screwed onto a part of the chassis is attached to the power transformer main body 1. In some cases, the protective cover 2 is extended to the live part of the power transformer, or even the protective cover 2 is held on the power transformer main body 1 itself.

[Problems with the Background Art] However, in such conventional power transformer protection devices, where the protective cover 2 requires fixing means such as rivets 4 or screws, work is required to fix the fixing means. Yes, if the protective cover 2 is attached to the live part itself,
Protective cover 2 comes off easily.

Furthermore, before soldering and attaching the power cord to the terminals of the power transformer main body 1, the protective cover 2 is temporarily attached to the power cord in advance, and then the protective cover 2 is reattached to the live part, which requires extremely troublesome work. Moreover, its protection is insufficient.

[Purpose of the invention] The present invention was made to eliminate the above-mentioned drawbacks, and the protective cover is fixed at the same time as the power transformer body is attached to the power transformer body mounting part, so that the power supply is not removed unless the power transformer body is removed. The purpose of the present invention is to provide a protection device for a power transformer that prevents it from coming off the transformer body.

[Summary of the invention] In order to achieve this purpose, the invention includes a power transformer main body having at least a primary side live part into which commercial power is introduced and a support part, and a power transformer main body that covers the live part of the power transformer main body. an insulating protective cover that engages with the power transformer main body at a locking portion and has protrusions spaced from each other in the same direction; and the protrusions of this protective cover are fittable and are spaced at substantially the same distance. a mounting plate having a formed fitting hole and a mounting portion for fixing the support portion of the power transformer; and a mounting plate having a fitting hole formed therein and a mounting portion for fixing the support portion of the power transformer; It is characterized by comprising a fixing means for fixing the device.

[Embodiment of the invention] An embodiment of the invention will be described below with reference to the drawings.

In FIG. 2, reference numeral 10 is a power transformer body housed within the electronic device body, and the primary side of the power transformer body 10 is connected to, for example, a commercial power source via a power cord 11.

A protective cover 12 made of insulating resin is placed over the primary side of the power transformer body 10, and this protective cover 12 includes a cover portion 12a that protects the primary side terminals of the power transformer body 10, and a cover portion 12a that protects the primary side terminals of the power transformer body 10. 12a, and consists of a locking member 12b for locking the cover portion 12a to prevent it from coming off from the power transformer main body 10, and a claw portion 12c formed on the inner surface of the locking member 12b.

The claw portion 12b is arranged to face the power transformer main body 10, and can be elastically engaged with the power transformer main body 10 by a notch 12d formed in the protective cover 12.

When attaching the protective cover 12 to the power transformer main body 10, open the opposing locking member 12b in the direction away from it and move it in the direction of the arrow in the figure, and then let the claw portion 12c reach the stepped portion of the power transformer main body 10. The locking member 12b moves in the approaching direction to lock the claw portion 12c to the power transformer main body 10.

Further, the above-mentioned locking member 12b has a holding portion 12e.
is formed.

On the other hand, the reference numeral 13 is a mounting plate, such as a cabinet panel, on which the power transformer main body 10 is mounted, and the protective cover 1 is mounted on this mounting plate 13.
A fitting hole 14 that can engage the holding portion 12e of No. 2 with the claw portion 12c engaged with the power transformer main body 10.
is formed, and a screw insertion hole 16 for fixing the power transformer main body 10 with a screw 15 is formed. This screw 15 is screwed into a screw hole 17 formed in the power transformer main body 10.

The protective cover 12 configured as described above is moved in the direction of the arrow in the figure with respect to the power transformer main body 10, and the claw portion 12c of the locking member 12b engages the power transformer main body 1.
The holding portion 12e formed on the locking member 12b is fitted into the fitting hole 14 of the mounting plate 13 in a state where it is engaged with the end of the power transformer main body 10 to the mounting plate 13 with the screw 15.

In this state, the claw portion 12c of the protective cover 12 is engaged with the end of the power transformer main body 10, and the holding portion 12e of the locking member 12b is attached to the fitting hole 14 of the mounting plate 13.
, and the opposing locking members 12b do not open in the direction of separation, so the claw portion 12 of the protective cover 12
c cannot be removed from the power transformer body 10. In other words, the protective cover 12 will not come off while the screws 10 are fixing the power transformer main body 10.

Insert the screw 15 into the screw hole 17 of the power transformer body 10.
If the holding portion 12e of the protective cover 12 is removed from the fitting hole 14, the locking member 12b can be operated in the opening direction.

Therefore, the claw portion 12c can be easily attached and detached from the power transformer main body 10, and the protective cover 12 can be removed from the power transformer main body 10 by pulling it out in the direction opposite to the arrow in the figure.

[Effects of the invention] As explained above, the power transformer protection device of the present invention not only prevents the power transformer from coming off while it is fixed to the mounting plate of the power transformer, but also prevents the power transformer from coming off. It becomes possible to install the protective cover at the same time as the main body is installed, and the structure is simple and the assembly workability is extremely good.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a conventional power transformer protection device, and FIG. 2 is a perspective view showing an embodiment of the power transformer protection device of the present invention. 10... Power transformer main body, 12... Protective cover, 12b... Holding member, 12c... Claw portion, 12
d... Notch, 12e... Holding part, 13... Mounting plate, 14... Fitting hole, 15... Screw, 16... Screw insertion hole, 17... Screw hole.

Claims (1)

[Scope of utility model registration request] A power transformer main body having at least a primary side live part into which commercial power is introduced and a support part, a power transformer body that covers the live part of the power transformer main body and engages with the power transformer main body at a locking part, and is spaced apart from each other. An insulating protective cover having protrusions formed in the same direction at the same distance, a fitting hole into which the protrusions of the protective cover can fit and formed at approximately the same intervals, and a mounting for fixing the support part of the power transformer. protection for a power transformer, comprising: a mounting plate having a section; and a fixing means for fixing the support section of the power transformer with the protrusion of the protective cover fitted into the fitting hole of the mounting plate. Device.