JPH0328008B2 - - 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.

BACKGROUND 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. 11, 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 passes through the center of the recess 1a of the display panel 1, projects forward, and a dial knob 6 is fitted therein. This dial knob 6 is made of a translucent material and has an elongated recess 6a into which a red color can be placed on the back side. A red line formed by filling the recess 6a with red color serves as a mark when setting the time. In addition, dial knob 6
It is customary that a plate 7 on which a warning message is printed is adhered to the front recess 6b.

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, are 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.

It is also possible to use a microcomputer to control the rotation speed of the timer motor 2 to keep it constant, but it is not possible to share it with conventional parts, and it requires a long development schedule or an increase in the number of parts. This was problematic and went against the grain of resource conservation.

Taking these problems into consideration, the present invention has made it possible to make the numbers for 50Hz and 60Hz on the scale panel larger and easier to see, and also allows the number of timer and control parts to be shared with the conventional ones, and also allows for ease of use when moving from a 50Hz area to a 60Hz area. The purpose of the present invention is to enable the display of a scale panel to be easily exchanged using two scale plates, and to enable smooth switching between 50Hz and 60Hz.

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. The 60Hz scale plate is fitted into the center hole of the 60Hz scale plate and the scale plate holding ring is fitted into the center of the concave part of the display plate and fixed.
The separated edge of the scale plate is guided above the 50Hz scale plate through the gap between the separated parts of the 50Hz scale plate, and the extension of the cut end of at least one of the 50Hz scale plate and the 60Hz scale plate is It has a structure that is slightly offset from the center of the ring.

Effect This configuration allows the frequency range of 50Hz to 60Hz within the recess on the front of the display board.
The Hz display can be easily replaced.

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

In FIG. 10, 10 is a cooking device main body, and a display board 11 on which cooking contents (not shown) are marked is fixed to the side surface of this main body 10. A timer 13 is fixed inside the display panel 11 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 groove 14a for mating, which 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 cut away along radial cutting lines. 15b is this cut-off edge.
16 is a 60Hz scale plate with a 60Hz display printed on it,
Similarly, a portion of the ring is cut away along a radial cutting line. 16a is this separated edge. A protrusion 15a facing toward the center is provided on the inner periphery of the ring of the 50Hz scale 15, and this protrusion 15
A is fitted into a projection recess 11a provided on the outer periphery of the center hole of the circular recess on the front surface of the display board 11, and is prevented from rotating. A protruding detent 11b is formed inside the front circular recess, and this detent 1
1b restricts rotation above a certain level when the 60Hz scale plate 16 rotates.

Reference numeral 17 is a scale plate that fits into the center hole of the 50Hz scale plate 15 and 60Hz scale plate 16 to serve as a rotating shaft, and is provided with a claw 17a fixed to the hole 11c of the display plate 11 and a rotation stopper 17b. It is a presser. The rotation stopper 17b is fitted into a groove 11d formed in the inner line of the hole 11c of the display board 11.

FIG. 2 is a detailed perspective view of the 50Hz scale plate 15.

A notch 15c is formed at the outer end of the edge 15b of the 50Hz scale plate 15 to expose a hole through which the 60Hz scale plate 16 superimposed on the lower surface of the 50Hz scale plate 15 starts rotating and sliding. . FIG. 3 is a detailed perspective view of the 60Hz scale plate 16. This 60Hz scale plate 16
A hole 16b is formed at the outer end of the edge 16a of the 50 Hz scale plate 15, which overlaps with the lower surface of the scale plate 15 and exposes from the notch 15c.

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. FIG. 5 shows a front view of the same. In this state, 60Hz scale plate 1
6 is exposed from the notch 15b, and the 60Hz scale plate 16 does not fall completely below the 50Hz scale plate 15.

In addition, since the extensions of the cut ends of the edges 15b and 16a of both scale plates are shifted in opposite directions from the center of the ring, even if the 60Hz scale plate 16 is slightly rotated in the direction of the arrow, the cut ends are I can't see a book. From this state, insert the tip of a bamboo comb or the like into the hole 16b of the 60Hz scale plate 16 and rotate it counterclockwise. At this time, the edges 15a, 1 of the scale plates 15, 16
6b are in contact with each other at an angle, so the contact between the edges is a point contact. Therefore, even if the scale plates 15 and 16 are slightly deformed, smooth rotation is possible. The state during rotation is shown in FIGS. 6 and 7. If the rotation is continued further, the state shown in FIGS. 8 and 9 will be reached, the 60Hz scale plate 16 will be placed above the 50Hz scale plate, and the display will be converted. Even in this state, since there is overlap inside the scale plates 16 and 17, the 60Hz
The scale plate 16 is never above the 50Hz scale plate.

60Hz clockwise from the conditions in Figures 8 and 9.
By turning the scale plate 16, the display returns to the original state shown in FIGS. 4 and 5, so both displays can be easily replaced.

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, allowing even people with some visual impairments to set the time more easily than before.

Further, the timer motor may be proportional to the same frequency as the conventional one, and there is no need to provide components for frequency switching on the control circuit board, which has the effect of contributing to reducing the number of shared components.

Furthermore, the display can be easily and smoothly replaced even when moving to an area where the power supply frequency is different.

In addition, in the example, the fixed 1 scale plate is a 50Hz scale plate,
Although the movable scale plate is a 60Hz scale plate, the reverse may be used. That is, it is sufficient to have two scale plates and rotate them to display either scale.

[Brief explanation of drawings]

FIG. 1 is an enlarged perspective view of essential parts of an embodiment of the present invention, FIGS. 2, 3, 4, 6, and 8 are enlarged perspective views of a scale plate, and FIGS. 7 and 9 are front views of the scale plate of the embodiment, and 10th
The figure shows a partially cutaway front view of the same, and FIG. 11 shows an exploded perspective view of a conventional example. 10... Main body, 11... Display board, 13... Timer,
14...Knob, 15...50Hz scale plate, 16...60Hz scale plate, 17...scale holding ring, 15b...edge (for 50Hz), 16a...edge (for 60Hz), 15c...notch.

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 recessed part of the display board and is separated at one point along a radial line, and a knob that fits into the recessed part of the display board.
A freely rotatable link-shaped 60 which is arranged to overlap with the Hz scale plate and separated at one point along a radial line.
Hz scale plate, and a scale plate holding ring that fits into the center hole 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,
The cut edge of the 60Hz scale plate is guided above the 50Hz scale plate through the gap between the cut parts of the 50Hz scale plate, and the cut end of at least one of the 50Hz scale plate and the 60Hz scale plate is extended. However, the timer device of the electric cooker is slightly offset from the center of the ring.