JPH0328007B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a timer device for an electric cooker for cooking rice and the like.

Prior Art A conventional timer device for an electric cooker has a structure as shown in, for example, Japanese Utility Model Application No. 58-49630. That is, as shown in FIG. 8, the timer motor 2 is fixed with screws 3 within the display panel 1 of the electric cooking appliance. An annular scale panel 4 on which a scale is printed is adhered to the circular recess 1a on the front surface of the display panel 1 using a pressure-sensitive adhesive or the like. The timer shaft 5 of the timer motor 2 is connected to the display panel 1.
The dial knob 6 is inserted through the center of the recess 1a and protrudes forward. This dial knob 6 is made of a permeable material and has an elongated recess 6a into which a red color can be applied on the back side. A red line formed by filling the recess 6a with red color serves as a mark when setting the time. Further, it is customary to adhere a plate 7 on which a warning message is printed to the front recess 6b of the dial knob 6.

Problems to be Solved by the Invention In such a conventional configuration, when setting the time of the timer, it is common to set the time to the number on the scale panel 4, but since the rotation speed of the timer motor 2 is proportional to the frequency. , two types, one for 50Hz and one for 60Hz, were printed on the same side, making the numbers small and difficult to read. It was particularly difficult to use for people with some visual impairments.

Additionally, it is possible to control the rotation speed of the timer motor 2 using a microcomputer, etc. to keep it constant, but it cannot be shared with conventional parts, and there are problems such as a long development schedule or an increase in the number of parts. This was contrary to the idea of resource conservation.

The present invention takes these problems into account and makes it easier to see the numbers for 50Hz and 60Hz on the scale panel, and also allows the number of timer and control parts to be shared with conventional ones. The purpose is to make it possible to easily replace the display on the scale panel when

Means for Solving the Problems In order to solve this problem, the present invention provides a display board fixed to the main body of an electric cooker, having a circular recess on the front surface and a hole in the center of the circular recess, and a A timer that is fixed inside the board and has a shaft at the center of the central hole of the recess of the display board, a knob that fits into the timer shaft, and a knob that fits and is fixed in the recess of the display board, with one location along the radial line. ring-shaped separated by
a 50Hz scale plate; a rotatable ring-shaped 60Hz scale plate arranged to overlap the 50Hz scale plate in a recessed portion of the display plate and separated at one point along a radial line; and the 50Hz scale plate. and a scale plate holding ring that fits into the center hole of the 60Hz scale plate and is fixed by fitting into the center of the recess of the display plate,
The cut-off edge of the scale plate is guided to the upper surface side of the 50Hz scale plate through the gap between the cut-off portions of the 50Hz scale plate.

Function With this configuration, it is possible to easily change from 50Hz display to 60Hz display (or vice versa) by rotating the 60Hz scale plate within the recess on the front surface of the display board.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings.

In Fig. 7, 10 is the main body of the electric cooker;
A display board 11 on which cooking contents (not shown) are marked is fixed to the side surface of the main body 10. This display board 1
A timer 13 is fixed inside the device 1 via a substrate 12. The shaft 13a of this timer 13 is D-cut.

Reference numeral 14 denotes a knob that is fitted onto this D-cut shaft 13a and operates the timer 13. Details of this part will be explained next with reference to FIG. The knob 14 is made of a transparent material, and has a matching groove 14a that is colored or the like in a concave portion on the back surface. 15 is a 50Hz scale plate with a 50Hz display printed on it. It is ring-shaped, with parts of the ring separated by radial lines. 15b is this cut-off edge. 16
is a 60Hz scale plate with a 60Hz display printed on it, with part of the ring separated by a radial line. 16
a is this separated edge. On the inner circumference of the ring of the 50Hz scale plate 15, there is a protrusion 15 facing toward the center.
a is provided, and this protrusion 15a is connected to the display plate 1.
The protrusion is fitted into a protrusion recess 11a provided on the outer periphery of the center hole of the circular recess on the front surface of No. 1, and is prevented from rotating. A protruding detent 11 is provided inside the circular recess on the front surface.
b is formed, and this detent 11b restricts rotation above a certain level when the 60Hz scale plate 16 rotates. 17 is the 50Hz scale plate 15 and the 60Hz scale plate 1
The claw 17a is fitted into the central hole of 6 to form a rotation support shaft, and is fixed to the hole 11c of the display board 11.
This is a scale plate holder equipped with a rotation stopper 17b. The rotation stopper 17b is the hole 1 of the display board 11.
It fits into a groove 11d provided on the inner edge of 1c.

FIG. 2 is a detailed perspective view of the 50Hz scale plate 15.
At the outer end of the edge 15b of this 50Hz scale plate 15,
60Hz scale plate 1 stacked on the bottom surface of 50Hz scale plate 15
A notch 15c is formed to expose a hole through which rotation and sliding of 6 is started. This hole is 16 in Figure 3.
Illustrated by c.

Figure 4 shows the 60Hz scale plate 1 below the 50Hz scale plate 15.
6 is shown superimposed on each other. At this time, a part of one end edge 16a of the 60Hz scale plate 16 is connected to the 50Hz scale plate 1.
It is guided to the front side through the gap between the separated parts of 5,
It is riding on a part of the 50Hz scale plate 15. and
When the tip of a bamboo comb or the like is inserted into the hole 16c at the edge of the 60Hz scale plate 16 and rotated counterclockwise, the 60Hz scale plate 16 slides on the 50Hz scale plate 15. This state is shown in FIG. If the rotation is continued further, the state shown in FIG. 6 will be reached, the 60Hz scale plate 16 will be placed above the 50Hz scale plate, and the display will be replaced.

If the 60Hz scale plate 16 is turned clockwise from the state shown in FIG. 6, it will return to the original state shown in FIG. 4, so both displays can be easily exchanged. Also 50Hz display,
The same effect can be obtained even if the 60Hz display is reversed.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, either the 50 Hz scale plate or the 60 Hz scale plate can be freely raised, and as a result,
Each number displayed can be made larger, making it easier for elderly people with some visual impairment to set the time than before.

In addition, the timer motor can be proportional to the same frequency as the conventional one, and there is no need to provide parts for automatic frequency switching on the control circuit board, which has the effect of contributing to sharing parts and reducing the number of parts. .

It also has the effect of allowing the display to be easily replaced when moving from a 50Hz area to a 60Hz area.

[Brief explanation of drawings]

Fig. 1 is an enlarged perspective view of a main part of an embodiment of the present invention, Fig. 2 is a perspective view of the same, Fig. 3 is a perspective view of the same, Figs. 4 to 6 are also perspective views of the same, and Fig. 7 is a part of the same. A cutaway front view and FIG. 8 are exploded perspective views showing a conventional example. 10... Main body, 11... Display board, 13... Timer,
14...Knob, 15...50Hz scale plate, 16...60Hz scale plate, 17...scale plate holding ring, 15b...edge (for 50Hz), 16b...edge (for 60Hz).

Claims (1)

[Claims] 1. A display board fixed to the main body of the electric cooker and having a circular recess on the front and a hole in the center of the recess, and a timer fixed inside the display board and having a shaft in the center of the center hole of the recess of the display board. , a knob that fits on the shaft of this timer, a ring-shaped 50Hz scale plate that fits and is fixed in the recess of the display board and is separated at one point along a radial line, and the recess of the display board that
A rotatable ring-shaped ring arranged to overlap the Hz scale plate and separated at one point along a radial line.
60Hz scale plate, and a scale plate holding ring that fits into the center holes of the 50Hz scale plate and the 60Hz scale plate and is fixed by fitting into the center hole of the recess of the display plate,
A timer device for an electric cooker, in which a cut-off edge of the 60Hz scale plate is guided toward the surface of the 50Hz scale plate through a gap between the cut-off portions of the 50Hz scale plate.