JPH0252488B2 - - 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. 11, the timer motor 2 is fixed with screws 3 within the display panel 1 of the electric cooking appliance. A ring-shaped 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 and projects forward, into which the dial knob 6 is fitted. This dial knob 6 is made of a translucent material and has an elongated recess 6a into which a red color can be inserted 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, are printed on the same side, making the numbers small and difficult to read. It was particularly inconvenient for someone with some disabilities.

It is also 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 products, 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.

Taking these problems into consideration, the present invention allows the numbers for 50Hz and 60Hz on the scale panel to be large and easy to see, and also allows the timer and control parts to be shared with conventional ones, which is also convenient when moving from a 50Hz area to a 60Hz area. The display on the scale panel can be replaced using two scale plates.
Moreover, the purpose is to enable smooth switching between 50Hz and 60Hz.

Means for Solving the Problem In order to solve this problem, the present invention has a circular recess fixed to the side of the main body of the electric cooker, and a circular recess on the front surface.
A display board having a hole in the center of the recess, a timer fixed inside the display board and having a shaft at the center of the center hole of the recess of the display board, a knob that fits into the timer shaft, and the display board recess. a ring-shaped 50Hz scale plate that is fitted and fixed to the display plate and separated at one point along a radial line; A rotatable ring-shaped 60Hz signal separated by a radial line.
a 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 fitted and fixed in the center of the recess of the display plate, and the separated edge of the 60Hz scale plate is guided toward the surface side of the 50Hz scale plate through the gap between the separated parts of the 50Hz scale plate, and a rotation stopper is provided on at least one of the display plate or the scale plate holding link,
The rotation stopper is located near the cut end of the 50Hz scale plate.

Function: With this configuration, the display from 50Hz to 60Hz can be easily changed 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. 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.

14 is 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 mating groove 14a, which is colored or the like, in a concave portion on its 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,
A portion of the ring is separated by a radial line.
16a is this separated edge. Said 50Hz
A protrusion 15a is provided on the inner periphery of the ring of the scale plate 15, and this protrusion 15a is fitted into a protrusion recess 11a provided on the outer periphery of the central hole of the circular recess on the front surface of the display plate 11. It is stopped from rotating. A protruding detent 11b is formed inside the circular recess on the front surface, and this detent 11
b is located near the outer periphery of the edge 15b of the 50Hz scale plate 15, which restricts the rotation of the 60Hz scale plate 16 beyond a certain level.

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 form a rotation axis, and is provided with a claw 17b fixed to the hole 11c of the display plate 11 and a detent 17a. It is a presser. The rotation stopper 17b fits into a groove 11d formed on the inner edge of the hole 11c of the display board 11. Further, the scale plate holder 17a is located near the edge 15b of the 50Hz scale plate 15.

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 to rotate. There is. This hole is illustrated by FIG. 3 16b.

4 and 5 show a state in which the 60Hz scale plate 16 is superimposed on the lower side of the 50Hz scale plate 15. FIG. At this time, a part of one end edge 16a of the 60Hz scale plate 16 is removed from the gap between the separated parts of the 50Hz scale plate 15.
Guided to the front side of 50Hz scale plate 15, 50Hz scale plate 1
It has climbed onto some parts of 5.

In this state, the 60Hz scale plate 16 overlaps the notch 15c exposing the hole 16b, and the 60Hz scale plate 16 does not fall completely below the 50Hz scale plate 15.

Here, when the tip of a bamboo comb or the like is inserted into the hole 16b and rotated, the 60Hz scale plate will rotate in the direction of A (counterclockwise). At this time, the 50Hz scale plate 15 intervenes below the rotation stopper 17a and is not affected, but the rotation stopper 11b is not affected in the direction of B (clockwise).
Due to this, it does not rotate.

The state during rotation is shown in FIGS. 6 and 7.
At this time, since it is not affected by both of the detents 11b and 17a, it rotates in both directions A and B.

If the rotation is continued further, the state shown in FIGS. 8 and 9 will be reached, and the 60Hz scale plate 16 will be placed above the 50Hz scale plate 15, and the display will be exchanged. Even in this state, there is an overlapping margin on the inside of the scale plates 15 and 16, so the 60Hz scale plate 16 does not come over the 50Hz scale plate 15.

At this time, in the direction of A (counterclockwise),
Due to the rotation stop 17a, it does not rotate, and in the direction of 8 (clockwise), there is a 50° angle above the rotation stop 17a.
Rotation is possible because the Hz scale plate intervenes and is not affected.

As mentioned above, the 50Hz scale plate and the detent 11b
17a, it is not possible to provide selectivity in the fixing direction, so the detent operates reliably and the 60Hz scale plate operates smoothly.

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

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 contributes to reducing the number of shared components.

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

In the example, the fixed 1st scale plate is used as a 50Hz scale plate, and the movable scale plate is used as a 60Hz scale plate, but 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 the drawing]

FIG. 1 is an enlarged perspective view of essential parts of an embodiment of the present invention;
2, 3, 4, 6, and 8 are enlarged perspective views of the scale plates of the embodiments, and FIGS. 5, 7, and 9 are scale plates of the embodiments. 10 is a partially cutaway front view of the same, and FIG. 11 is an exploded perspective view showing a conventional example. 10... Body, 11... Display board, 13... Tire, 14... Knob, 15... 50Hz scale plate, 1
6...60Hz scale plate, 17...scale press ring,
15b...Edge (for 50Hz), 16a...Edge (60Hz)
Hz), 15c...notch, 11b, 17a...rotation stopper.

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 the 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 a knob that fits into the recess of the display board.
A rotatable ring-shaped 60Hz scale plate arranged to overlap the 50Hz scale plate and separated at one point along a radial line, and fitted into the center hole of the 50Hz scale plate and the 60Hz scale plate. The scale plate retainer ring is fitted into the center hole of the recessed part of the display plate and fixed, and the cut-off edge of the 60Hz scale plate is connected to the
The 50Hz scale plate is guided to the upper surface side through the gap between the separated parts of the 50Hz scale plate, and a rotation stopper is provided on at least either the display plate or the scale plate holding ring, and the rotation stopper is designed to prevent the 50Hz scale plate from being cut. A timer device for an electric cooker located near the mouth.