JPS6319031Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a signal generating device suitable for generating a plurality of signals.

As a device that generates a signal by attaching and detaching an information card of a separate member to and from a mounting portion, there is a device that uses a perforated card or a magnetic card, as is well known. Punch-hole cards and magnetic cards are easily damaged by bending, etc. Magnetic cards in particular have the disadvantage that their memory contents can be erased due to the influence of magnetic fields, and their functions are easily impaired, so please be careful when handling them. Depending on the circumstances, there was a drawback that the durability and reliability were extremely low.

Therefore, the purpose of the present invention is to obtain a plurality of signals by removably fitting an indicator plate into a holding part, and to generate a signal that has effects such as significantly improving its durability and reliability. We are here to provide you with the equipment.

An embodiment in which the present invention is applied to a fully automatic washing machine configured to select a plurality of washing courses will be described below with reference to the drawings. Reference numeral 1 denotes an operation box made of plastic, for example, which is installed on the upper part of the washing machine, and a panel 2 constituting the inclined part on the front side thereof has a concave part 3 formed as a holding part in the form of a regular polygon, for example, a square. There is. An indicator 4 is drawn on a portion of the panel 2 facing from above at the center of the upper side of the recess 3. Reference numeral 5 designates an indicator plate made of a non-magnetic material such as plastic, which is formed into a square slightly smaller than the recess 3, and is configured to be removably fitted into the recess 3.
In this case, since the recess 3 and the indicator plate 5 each have a square shape, the indicator plate 5 can be repositioned by turning it over with respect to the recess 3 and by rotating in a plane parallel to the panel 2. It is. In addition, on the front side 5a and back side 5b of the instruction plate 5,
Eight types of letters A are drawn close to each of the four sides, representing the name of the washing machine's washing process, such as ``Full Automatic'', ``Drain Dehydration'', ``Rinse Dehydration'', ``Dehydration Only'', etc. . Therefore, by fitting the indicator plate 5 into the recess 3 while changing its position by turning it over or rotating it, any one of the letters A can be exposed to the indicator 4. obtain. Note that reference numeral 6 denotes a through hole formed in the center of the indicator plate 5, into which a finger is inserted when the indicator plate 5 is attached or removed. Now, reference numeral 7 denotes one permanent magnet embedded and fixed in the indicator plate 5, and this permanent magnet 7 has four axes of symmetry a, b, c, and d corresponding to the square surface of the indicator plate 5 (see Fig. 4). (see), and is located between two adjacent ones a and b.
When the permanent magnet 7 is in such a position, if the indicator plate 5 is turned over or rotated as described above to make the eight types of letters A sequentially face the index 4, the permanent magnet will be set accordingly. The magnets 7 are sequentially moved to individual positions indicated by two-dot chain lines in FIG. 4, and as a result, the permanent magnets 7 can be located at eight positions that do not overlap with each other. On the other hand, 8 to 15 are, for example, eight reed switches, which are magnetic sensing elements for signal generation disposed at positions corresponding to the recesses 3 on the back side of the panel 2, and these are used when the position of the indicator plate 5 is changed as described above. The permanent magnets 7 are positioned opposite to the eight positions in which the permanent magnets 7 are located. Therefore, when the indicator plate 5 is fitted into the recess 3, any one of the eight reed switches 8 to 15 faces the permanent magnet 7 and is closed. Further, in FIG. 5 showing the electrical configuration, numeral 16 stores programs for multiple types of washing courses (eight types in this embodiment) such as fully automatic, drain/dehydrate, etc., and the selected washing course is stored in the memory. It is a control circuit that is executed according to a program, and has eight signal input terminals P1 corresponding to the eight types of programs, respectively.
to P8, selectively activating the program corresponding to the terminal to which the signal is input;
A washing course corresponding to this is executed. and,
The reed switches 8 to 15 are connected to the voltage output terminal V of the control circuit 16 and the signal input terminals P1 to P.
Accordingly, each reed switch 8 to 15 passes the voltage from the voltage output terminal V to generate a voltage signal in response to its closure, and the signal is transmitted to the control circuit 16. signal input terminal P1 of
to P8.

However, among reed switches 8 to 15,
The reed switch 8 is closed facing the permanent magnet 7 when the instruction plate 5 is fitted into the recess 3 with the letter A of "fully automatic" facing the indicator 4.
Of the signal input terminals P1 to P8 of the control circuit 16, the signal input terminal P1 corresponds to a fully automatic washing course.
Similarly, the reed switches 9 to 15 are closed each time the indicator plate 5 is fitted into the recess 3 so that each letter A such as "Drain Dehydration" faces the indicator 4. Of the signal input terminals P2 to P8 of the control circuit 16, the control circuit 16 is configured to apply a signal to each signal input terminal corresponding to a washing course indicated by each letter A facing the index 4 as described above.

Therefore, according to the above configuration, the indicator plate 5 is placed in the recess 3.
By turning over or rotating the reed switches 8 to 15, the permanent magnet 7 can be opposed to any one of the reed switches 8 to 15 and closed. It is possible to arbitrarily select from a plurality of types of washing process programs stored in the machine.

As described above, in this embodiment, the square indicator board 5
Since the position of the permanent magnet 7 embedded and fixed in the square is set between two adjacent axes a, b, b, c, and d of the square, the position can be changed by turning over or rotating the indicator plate 5. When the permanent magnet 7 is inserted into the recess 3, the moving position of the permanent magnet 7 can be set to 8 unique positions that do not overlap with each other, and as a result, a total of 8 signals can be obtained from the reed switches 8 to 15. This is very useful in practice. In particular, the indicator plate 5 does not have any support even if it is made of relatively thick plastic, and the permanent magnet 7
Since the magnetic force of the magnet does not disappear easily, there is no risk that it will be easily damaged or its function will be impaired, and its durability and reliability can be significantly improved. In addition, conventional washing machines have a manual switch for selecting a washing course on the operation box, so
The operation box must have a hole for installing the manual switch, and a waterproof structure must be provided for that hole.
Therefore, there is a drawback that the shape and structure of the operation box are unavoidably complicated, but in this embodiment, there is no need to provide holes in the operation box 1 as in the conventional case.
It is possible to eliminate the need for a waterproof structure, simplify the shape and structure, and make the panel 2 of the operation box 1 completely watertight. Furthermore, since it is only necessary to provide eight reed switches 8 to 15 and one indicator board in which the permanent magnet 7 is embedded in order to obtain eight signals, there is an advantage that the number of parts can be reduced.

In the above embodiment, the indicator board 5 is square, but it is not limited to this and may be a regular n-gon. In this case, a total of 2n signals can be obtained. Further, the indicator plate 5 may be provided with two or more permanent magnets.

As described above, the present invention can obtain a relatively large number of signals with a small number of parts, significantly improve its durability and reliability, and eliminate the need for a waterproof structure for the panel. It is possible to provide a signal generating device that performs the following functions.

[Brief explanation of the drawing]

The drawings are for explaining an embodiment in which the present invention is applied to a fully automatic washing machine. Figure 1 is a vertical side view of the operation box, Figure 2 is a partial front view of the operation box,
Figures 3a and b are front views of the front and back sides of the indicator board, Figure 4 is an outline view of the indicator board to explain the position of the permanent magnet and its movement state, and Figure 5 is the electrical configuration. FIG. In the figure, 1 is an operation box, 2 is a panel, 3 is a recess (holding part), 5 is an indicator board, 7 is a permanent magnet, 8 to 15
is a reed switch (magnetic sensing element for signal generation),
a, b, c, d are symmetry axes.

Claims (1)

[Scope of utility model registration request] an indicator plate having a regular polygon; a holding part provided on a panel into which the indicator plate is removably fitted; and a holding part fixed to the indicator plate located between two adjacent axes of symmetry of the regular polygon; A permanent magnet is provided on the surface side of the panel corresponding to the holding part, and the indicator plate is fitted into the holding part in a position changing state by turning it over or by rotating it, so that it can be moved to a unique position. A signal generating device comprising: a plurality of signal generating magnetically sensitive elements positioned to face the permanent magnet having a magnetic field.