JPH0328006B2 - - 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. 12, 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 and projects forward, into which the dial knob 6 is fitted. This dial knob 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, 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.

In addition, 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.

Taking these problems into consideration, the present invention makes it possible to make the 50Hz and 60Hz numbers on the scale panel larger and easier to see, and also allows the number of timer and control parts to be shared with conventional ones. To enable the display of a scale panel to be easily exchanged using two scale plates when such a situation occurs, and to prevent movement of the scale plate due to vibration or the like.

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 60 Hz scale plate and is fixed by fitting into the center of the recess of the display plate,
The separated edge of the Hz scale plate is guided to the upper surface side of the 50Hz scale plate through the gap between the separated parts of the 50Hz scale plate, a hole is formed in the 60Hz scale plate, and a hole is formed in the 50Hz scale plate, and a hole is formed in the 50Hz scale plate. It has a structure in which protrusions that fit into the holes are provided on the front and back surfaces.

Function With this configuration, it is possible to easily change from 50Hz display to 60Hz display (or vice versa) within the recess on the front of the display board, and the movement of the scale plate can be prevented by fitting the projections and holes on the scale plate. It is.

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

In FIG. 11, 10 is a main body of an electric cooking device, 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 1 is provided inside this display board 11 via a board 12.
3 is fixed. 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. The details of this part will be explained 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. This is ring-shaped,
A portion of the ring is separated by a radial line.
15b is this cut-off edge. 16 is 60
This is a 60Hz scale plate with the Hz display printed on it, and part of the ring is also separated by a radial line. 1
6a is this separated edge. On the inner circumference of the ring of the 50Hz scale plate 15, there is a protrusion 1 facing toward the center.
5a is provided, and this projection 15a is fitted into a projection recess 11a provided on the outer periphery of the central hole of the circular recess on the front surface of the display panel 11, and is prevented from rotating.
A protruding strip-shaped detent 1 is provided inside the circular recess on the front surface.
1b is formed, and this rotation stopper 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
It fits into the center hole of 6 and becomes the rotation axis,
This is a scale plate holder provided with a claw 17a that is fixed in a hole 11c of the display board 11 and a rotation stopper 17b. The rotation stopper 17b fits into a groove 11d formed on the inner edge of the hole 11c of the display board 11.

FIG. 1 is a perspective view of the 50Hz scale plate 15. this
The outer edge of the edge 15b of the 50Hz scale plate 15 has a 50Hz
60Hz scale plate 16 superimposed on the bottom surface of scale plate 15
A notch 15b is formed to expose a hole 16c for starting rotation. Also, 50Hz scale plate 15
A protrusion 15c protruding from the front side and a protrusion 15d protruding from the back side are formed on the protrusion 15c. (See FIG. 3) FIG. 2 is a perspective view of the 60Hz scale plate 16. this
When the 60Hz scale plate 16 is stacked on the 50Hz scale plate 15, the projections 15c of the 50Hz scale plate 15,
A hole 16b that fits with one of the protrusions 15d, and
It has a hole 16c exposed from the notch 15b of the Hz scale plate. This hole 16c is for inserting the tip of a bamboo skewer or the like when rotating the 60Hz scale plate 16.

FIG. 6 shows a state in which the 60Hz scale plate 16 is superimposed on the lower side of the 50Hz scale plate 15. At this time, 60
A part of one end edge 16a of the Hz scale plate 16 is guided to the front side through the gap between the separated parts of the 50Hz scale plate 15, and rests on a part of the 50Hz scale plate 15.

FIG. 7 is a vertical sectional view of the main part in this state, and is a projection 15d.
is fitted into the hole 16b, so the 60Hz scale plate 16
is not in a movable state due to the elasticity of the 50Hz scale plate 15.

FIG. 8 shows a state in which the 60Hz scale plate 16 slides on the 50Hz scale plate 15 when the tip of a bamboo skewer or the like is inserted into the hole 16c of the 60Hz scale plate 16 and rotated counterclockwise.

If the rotation continues further, the state shown in Figure 9 will be reached60
The Hz scale plate 16 is placed on top of the 50Hz scale plate 15, and the display is exchanged. FIG. 10 is a longitudinal sectional view of the main part in this state, and the 60Hz scale plate 16 is fitted and fixed by fitting the projection 15c and the hole 16b.

Further, it is possible to start rotating the 60 Hz scale plate 16 clockwise from the state shown in FIG. 9 and return to the original state shown in FIG. 6 by setting the dimensions of the protrusion 15c and the hole 16b. Therefore, both 50Hz and 60Hz display can be easily exchanged.

Further, in the present invention, the fixed side is a 50Hz scale plate, but the same effect can be obtained by using the fixed side as a 60Hz scale plate and the movable side as a 50Hz scale plate.

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 of the displayed numbers 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 install parts for automatic frequency switching on the control circuit board, contributing to the sharing of parts and reduction in quantity. play.

It also has the advantage that the display can be easily replaced when moving from a 50Hz area to a 60Hz area.

Furthermore, whether the display is 50Hz display or 60Hz display, the fitting of the hole and protrusion prevents movement even when external forces such as vibrations are applied, and the display can be moved freely when a person wants to use a bamboo skewer. It also has the following.

[Brief explanation of the drawing]

FIG. 1 is an enlarged perspective view of a main part of an embodiment of the present invention, FIG. 2 is a vertical sectional view of the main part, FIG. 3 is an enlarged perspective view of the main part, and FIG. Figure 5 is an exploded perspective view of the same, Figures 6, 8, and 9 are perspective views of the same, and Figure 7 is a perspective view of the same.
10 are longitudinal sectional views of the same essential parts, FIG. 11 is a sectional view of the main body parts, and FIG. 12 is an exploded perspective view of the 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), 16b...hole,
15c...Protrusion, 15d...Protrusion.

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 60mm ring placed so as to overlap the Hz scale plate and separated at one point along a radial line.
The 60 Hz dial comprises a Hz scale plate, and a scale plate holding ring that fits into the center holes of the 50 Hz scale plate and the 60 Hz scale plate, and is fixed by fitting into the center hole of the recess of the display plate,
The cut-off edge of the Hz scale plate is guided onto the 50Hz scale plate through the gap between the cut-off parts of the 50Hz scale plate, and the 60Hz scale plate has a hole, and the holes are formed on the front and back of the 50Hz scale plate. A timer device for electric cookers that has a protrusion that fits with the.