JP2563908Y2 - Power supply - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
A power cord c protrudes from one wall b of the casing a, and a switch e is provided on another wall d opposite to the one wall b. f is a sleeve for the power cord c.

[0003]

Therefore, in the conventional power supply shown in FIG. 12, the switch e is provided at a position farthest away from the power cord c, and the internal wiring becomes longer. In addition, both the walls b and d must be provided with holes, and the production thereof is troublesome.

Accordingly, an object of the present invention is to provide a power supply device in which the internal wiring is not lengthened and the casing can be easily processed.

[0005]

In order to achieve the above object, a power supply device according to the present invention has a sleeve for a power cord attached to one wall of a casing, and the power cord is separated from the one wall. A switch holding portion is provided on the sleeve, and a switch is attached to the switch holding portion so that a knob for operating the switch protrudes from one wall of the casing.

[0006]

The switch is provided on one wall from which the power cord protrudes, so that the internal electric wire connecting the power cord and the switch can be shortened.
It is not necessary to provide on the other wall opposite to one wall of the casing.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments.

FIGS. 4 and 5 show a power supply device according to the present invention. The power supply device comprises a casing 1 having a transformer (not shown) and a power cord 2 projecting from one wall 1a of the casing 1. And a switch 3 provided on the one wall 1a.

Thus, the casing 1 comprises the upper lid 4 and the lower lid 5
The upper lid 4 comprises a substantially rectangular upper wall 6 and hanging walls 7, 8, 9, 10 hanging from four sides of the upper wall 6, and the lower lid 5 has a substantially rectangular bottom. It comprises a wall 11 and rising walls 12, 13, 14, 15 standing upright from four sides of the bottom wall 11. And
The rising walls 12, 13, 14, 15 of the lower lid 5 and the hanging walls 7, 8, 9, 10 of the upper lid 4 are mutually engaged to form the hollow casing 1. That is, the above-mentioned one wall 1a is formed by the hanging wall 7 and the rising wall 12.

As shown in FIGS. 1 and 2, the switch 3 includes a switch body 3a, a projecting portion 3b projecting from the switch body 3a, and an operation projecting from the projecting portion 3b. The knob 3c is inclined with respect to the switch axis in plan view, and is swung as indicated by an arrow A from the state indicated by the solid line in FIG. Switching from the state shown by the virtual line to the state shown by the solid line by swinging as shown by arrow B,
OFF is switched. Then, the switch 3 is attached to a substrate 16 in which the main body 3a is provided inside the casing 1.

As shown in FIG. 5, a semicircular notch 17 is formed in the lower surface of the hanging wall 7 of the upper lid 4 on the side of the hanging wall 10, and through this notch 17, as shown in FIG. As shown in FIG. 2, the operation knob 3c of the switch 3 projects outside.

The power cord 2 is introduced into the casing 1 via the sleeve 18, and the sleeve 18 is attached to the rising wall 12 of the lower lid 5 of the casing 1.

That is, as shown in FIGS. 1 to 3, the sleeve 18 has a substantially rectangular parallelepiped main body 21 having a protruding portion 20 at the base end of the upper surface 19, and is connected to the base end face of the main body 21. And a switch holding unit 22. Here, the switch holding portion 22 has a flat plate portion 25 having a concave recess 24 in the center of the upper surface 23, a protruding plate portion 27 which is connected to the flat plate portion 25 and whose tip end portion 26 projects upward, And grooves 28 on both side surfaces or the lower surface of the flat plate portion 25.
Are formed, and an important notch portion 29 that opens upward is formed at the tip end portion 26 of the protruding plate portion 25. That is, as shown in FIGS. 1 and 2, the protruding portion 3b of the switch 3 is fitted into the important notch portion 29 and the concave recess portion 24, and the switch 3 is held and attached to the sleeve 18.

As shown in FIG. 5, a rectangular notch 30 is formed on the rising wall 15 on the upper surface of the rising wall 12 of the lower lid 5, and the sleeve 18 is engaged with the notch 30. I have. That is, as shown in FIG.
The sleeve 18 is held by the casing 1 so that the main body 21 projects outside. The notch end of the notch 17 of the upper lid 4 has a bent portion as shown in FIG.
The bent portion 32 has a projection 3b of the switch 3 formed thereon.
Is locked.

As shown in FIG. 3, the sleeve 18 has a pair of through holes 33, 33 extending from its distal end face 34 to its proximal end face.
35 (see FIG. 1), and the power cords 2, 2 are inserted into the through holes 33, 33. In FIG. 1, reference numeral 40 denotes a lead wire of the switch 3, which is connected to the substrate 16.
The protruding portion 20 of the main body 21 of the sleeve 18 is formed of a rectangular cross-sectional body having a curved end surface 20a.
“b” corresponds to the operation knob 3c of the switch 3, and protects the operation knob 3c.

The inner surface 6a of the upper wall 6 of the upper lid 4 of the casing 1 and the inner surface 11 of the bottom wall 11 of the lower lid 5 of the casing 1
A heat dispersing member 36 made of a foil tape of a conductor such as copper is attached to a. That is, when an internal transformer (not shown) such as a transformer or an electronic component generates heat, the heat is dispersed throughout the casing 1 to prevent the casing 1 from being locally heated. The heat dispersing material 36 may be attached to all six inner surfaces of the casing 1, may be attached to only a part of the inner surface, or may not be attached at all.

Therefore, in the power supply device to which the heat dispersing material 36 is attached, the casing 1 (made of resin) does not locally become hot, and the casing 1 is not partially deteriorated or cracked. Further, by electrically grounding a part of the heat dispersing material 36, it can be used as an electromagnetic shield plate. Thereby, it is possible to effectively prevent unnecessary noise generated from the transformer means from being radiated to the outside of the power supply device.

Next, FIGS. 6 and 7 show a modification of the casing 1. In this case, a pair of protective projections 37 in which the operating knob 3c of the switch 3 is interposed is provided on one wall 1a of the casing 1. FIG. , 37 are protruding. That is, the protrusions 37, 37
It is provided on the front surface of the hanging wall 7 of the upper lid 4,
It consists of a rectangular body with a notch in the shape of a quarter arc formed on the upper surface, and is disposed on the left and right of the operation knob 3c.

Therefore, the projections 37, 37 prevent the operation knob 3c from being pressed abruptly to prevent the switching operation. It is preferable that the protrusion length C of the protrusions 37, 37 is set to be the same as or slightly smaller than the protrusion length D of the operation knob 3c. The operation knob 3c is dimensioned so as not to abut on the projections 37,37. In this case, the projection 37 is formed integrally with the upper lid 4 of the casing 1.

8 and 9 show another embodiment. In this case, the sleeve 18 has a main body 21 formed with circumferential grooves 38 arranged at a predetermined pitch. The body
21 has flexibility.

Next, FIGS. 10 and 11 show still another embodiment. In this case, below the operating knob 3c of the switch 3,
From the rising wall 12 of the lower lid 5, a protection projection 39 of a flat plate is protruded. That is, the operation knob 3c is protected against unexpected pressing of the operation knob 3c downward. Therefore,
In this case, the raised portion 20 of the main body 21 of the sleeve 18 is omitted. In the illustrated example, the main body 21 is provided with the concave grooves 38 in the same manner as the sleeve 18 shown in FIG. 8 and FIG.
... can be omitted. Further, the protection projection 39 made of a flat plate may be provided above the operation knob 3c or may be provided only above the operation knob 3c.

According to each of the above-described power supply devices, since the switch 3 is provided on the one wall 1a from which the power cord 2 projects, the internal wiring connecting the power cord 2 and the switch 3 can be shortened. And a sleeve 18 for the power cord 2 also serves as a holding member for holding the switch 3,
The total number of parts is reduced, the assembling work is facilitated, and it is not necessary to form a switch hole in the other wall 1b opposite to the one wall 1a.

The present invention is not limited to the above-described embodiment, and the design can be freely changed without departing from the gist of the present invention. For example, the switch 3 is not limited to a toggle switch as in the embodiment, but may be a push switch. Various switches such as a switch and a slide switch can be used. Further, in the above-mentioned example of the sleeve 18, the main body 21 and the switch holding portion 22 are integrally formed, but the sleeve 18 may be assembled by forming the main body 21 and the switch holding portion 22 as separate members. good. Further, the switch 3 {specifically, the switch main body 3a and / or the protruding portion 3b} and the switch holding portion 22 may be integrally formed.

[0024]

Since the present invention is configured as described above, the following effects can be obtained.

Since the internal wiring can be shortened or simplified, the inside of the power supply device can be simplified, and the cost can be reduced.

There is no need to drill a hole in the other wall 1b or the like opposite to the one wall 1a, which facilitates manufacturing.

The sleeve 18 for the power cord 2 can hold the switch 3, reducing the total number of components and facilitating the assembling work.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional side view of a main part showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional plan view of a main part.

FIG. 3 is an enlarged perspective view of a sleeve.

FIG. 4 is an overall plan view.

FIG. 5 is an overall front view.

FIG. 6 is a main part plan view showing a modification of the casing.

FIG. 7 is a side view of a main part showing a modification of the casing.

FIG. 8 is a main part plan view showing another embodiment.

FIG. 9 is a side view of a main part showing another embodiment.

FIG. 10 is a plan view of a main part showing still another embodiment.

FIG. 11 is a main part side view showing still another embodiment.

FIG. 12 is a plan view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casing 1a One wall 2 Power cord 3 Switch 3c Operation knob 18 Sleeve 22 Switch holding part

Claims (1)

(57) [Scope of request for utility model registration] 1. A sleeve 18 for the power cord 2 is attached to one wall 1a of the casing 1, the power cord 2 protrudes from the one wall 1a, and a switch holding portion 22 is provided on the sleeve 18. In addition, the switch 3
A power supply device characterized in that an operating knob 3c of the switch 3 is protruded from one wall 1a of the casing 1.