JPS5824388Y2 - appliance plug device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a plug device that can be applied to small electric appliances such as power adapters, portable lamps, and electric razors.

In this type of device, a power supply plug is housed at the end of an electrical appliance case, and an operation knob provided on the bottom surface of the plug is made to protrude from the bottom surface of the case, and when the knob is moved, the plug blade of the plug is moved outside the case. The plug protrudes and locks the plug when it protrudes.

In order to lock the plug, the conventional device provides a recess on the support plate on which the plug is placed, and engages the insulating base of the plug itself, or moves the knob up and down with respect to the insulating base. The knob is movably provided to engage the knob in the recess.

For this reason, the former has the drawback that the plug itself moves up and down, causing it to wobble and make it difficult to operate the plug, and the latter requires a coil spring to bias the knob downward, which reduces the number of parts. There are many drawbacks such as high cost.

The present invention has been devised in view of these points, and one embodiment of the present invention will be described below based on the drawings.

1 is an electrical appliance case and is composed of two divided cases 2 and 3. A storage battery and its charging circuit components are housed in the case 1, and a power supply plug 5 is connected to the end of the case 1 by a partition plate 4. A storage chamber 6 is formed to slidably accommodate the.

The partition plate 4 has guide ridges 7, 7 on the lower surface, and guide grooves 8, 8 provided on the upper surface of the plug 5 engage with the ridges, so that the plug 5
The sliding position of the plug 5 is set such that the plug blades 9, 9 pass through the through holes 10, 10 provided in the case side wall when the plug 5 slides. It regulates the

Further, a pair of contact pieces 11, 11 are attached to the partition plate 4, and the free end 12 of each contact piece faces the lower surface of the partition plate 4 through the window 13 and comes into contact with the plug blade 9.

The plug 5 is connected to the partition plate 4 and the case bottom plate 1 that form the storage chamber 6.
4, it is restricted from moving in the vertical direction.

The plug 5 is composed of plug blades 9, 9 and an insulating base 15 in which the plug blades are insert-molded, and the guide grooves 8,
8 is formed on the upper surface of the insulating base.

Furthermore, an engagement groove 16 is provided on the lower surface of the insulating base in the direction in which the plug blade 9 projects from the insulating base, that is, in the direction perpendicular to the sliding direction of the plug 5.

Reference numeral 17 designates an operating knob of the plug 5, which includes an operating portion 18, a retaining portion 19 that engages with the retaining groove 16, and a side portion of the engaging portion that contacts the inner surface 20 of the case 1 or the storage chamber 6. It includes an elastic arm piece 21 that comes into contact with the knob 17 and imparts elasticity to the knob 17.

In the embodiment, the inner surface 20 is formed by the inner surface of a hanging plate 22 that hangs down from the partition plate 4.

The operating part 18 of the knob 17 protrudes downward from the case through a slit hole 23 formed in the case bottom plate 14, and the knob 17 is inserted into the hole edge of the slit hole 23 on the plug blade protruding side by the elasticity of the knob itself. A locking groove 24 that locks in a direction perpendicular to the sliding direction of the plug 5 is formed.

Further, a recessed notch 25 (see FIG. 4) is formed on the plug retraction side of the inner surface 20 to release the elasticity of the elastic arm piece 21.

In the embodiment, the recessed portion is formed between the side surface 26 of the hanging plate 22 and the inner wall 27 of the case.

When the plug blade 9 is in the retracted state, the tip 28 of the elastic arm piece 21 of the knob 17 is located in the recessed part 25, as shown in FIGS. 2 and 4.

In this state, when the operating portion 18 of the knob 17 is pressed to the protruding side of the plug blade 9, the tip 28 of the elastic arm piece 21 is moved to the hanging plate 2.
2 so as to touch the inner surface 20 of the knob 17.
Since the position of the knob 17 is restricted by the slit hole 23,
There is no lateral movement, and elasticity is stored due to the deformation of the elastic arm piece 21.

Further, when the knob 17 is moved to the protruding side of the plug blade 9, as shown by the dashed line in FIG. 24, and the protruding state of the plug blade 9 is maintained.

When storing the plug blade 9, it is sufficient to move the operating section 18 horizontally upward and to the left in FIG. do.

As described above, according to the configuration of the present invention, the retaining portion of the operation knob protruding downward from the slit hole provided in the electric appliance case is engaged with the lower surface engagement groove of the power supply plug, and the plug blade of the slit hole is A locking groove for locking the knob in a direction perpendicular to the sliding direction of the plug by the elasticity of the knob itself is provided on the edge of the protruding side hole; An elastic arm piece that imparts elasticity to the knob is provided, and a recessed part that releases the elasticity of the arm piece is formed on the plug retraction side of the inner surface, and a locking groove is provided to maintain the protruding state of the plug blade. The only thing that is engaged with the plug is the knob, which eliminates vertical movement of the plug and improves plug operation.

Further, since the knob is movable, a coil spring can be omitted, contributing to cost reduction.

Furthermore, since a recessed portion is provided on the plug retraction side of the inner surface, the tip of the elastic arm piece that slides into contact with the inner surface can be engaged with the recessed portion at the plug retraction position. It is possible to release the deformation and release the elasticity of the arm piece, improve fatigue resistance, and configure an articulation mechanism for the knob operation, so that the plug can be moved naturally due to vibration etc. This allows the plug to remain in the retracted state.

[Brief explanation of the drawing]

The drawing shows an embodiment of the plug device according to the present invention, and shows the first embodiment of the plug device according to the present invention.
The figure is a sectional view of the main part, Figure 2 is a sectional view taken along line II-II in Figure 1, Figure 3 is a sectional view similar to Figure 2 when the plug is protruded, and Figure 4
The figure shows a partially cutaway bottom surface, and FIG. 5 is an exploded perspective view of the partition plate, power supply plug, and operation knob. 1... Case, 5... Power plug, 1
6... Engagement groove, 23... Slit hole,
17... Operation knob, 19... Engaging portion, 24... Locking groove, 20... Inner surface,
21...Elastic arm piece, 25...Concave cutout.

Claims (1)

[Scope of utility model registration request] A power supply plug is slidably housed in an electric appliance case, and an engaging portion of a working knob that protrudes downward from a slit hole provided in the case is engaged with a lower surface retaining groove of the plug, and the slit is closed. A plug device comprising a locking groove for locking the knob in a direction perpendicular to the sliding direction of the plug by the elasticity of the knob itself on the edge of the hole on the plug protruding side, the plug device comprising: An elastic arm is provided on the inner surface of the case to apply elasticity to the knob, and a recessed part is formed on the plug retraction side of the inner surface to release the elasticity of the arm. Plug device for electrical appliances.