JPS6021034Y2 - Automatic reversing washing machine control device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a control device for an automatic reversing washing machine that can obtain several different reversing times (reversing cycles) using only one timer.

Rotate the pulsator in the forward direction → Pause → Reverse direction → Pause →・
In a washing machine that automatically reverses laundry, it is desirable to change the time of the reversal cycle as appropriate depending on the amount of laundry, the type of fabric, the degree of dirt, etc.

For this reason, in conventional washing machines of this type, for example, two reversing switches are provided in one timer to obtain two-stage reversing time, or two reversing switches are used in combination to obtain several stages of reversing time. Some methods have been proposed to obtain the reversal time.

However, these conventional devices not only cannot obtain an appropriate reversing time depending on the laundry, but also have the disadvantage that the reversing switch provided in the timer is not effectively utilized.

This idea was made in view of the above points, and the reduction gear system connected to the timer motor is equipped with a reversal cycle switching device that appropriately switches the reduction ratio, and by switching the switching device, the rotational speed of the reversing cam is changed. It is an object of the present invention to provide a washing machine control device that can obtain several different reversal times by changing the on/off cycle of a reversing switch.

An example of this invention will be explained below with reference to the drawings.
First, as shown in FIG. 1, reference numeral 1 denotes an output pinion of a timer motor TM (not shown), which is linked to a gear 2.

Reference numeral 3 denotes a frequency switching device, which is composed of a switching shaft 4, a driven plate 5, and a pair of switching pinions 6.7.

Of these, the switching shaft 4 is supported by a case (not shown), one end of which protrudes outside the case so that it can be operated from the outside, and a linking pin 4 is provided in the middle.
A and a rotation restriction protrusion 4b are formed, respectively, and a fan-shaped rotation restriction notch 4c is formed in the lower part.

The driven plate 5 is pivotally supported by the shaft of the gear 2, and one end thereof is linked to the linking pin 4a of the switching shaft 4, and rotates in accordance with the rotation of the switching shaft 4.

Further, the switching pinions 6, 7 are each pivotally supported by the driven plate 5, and the lower pinion portions thereof are always connected to the pinion portions 2a of the gears 2, and rotate as the gears 2 rotate.

Reference numeral 8.9 denotes a rotation regulating piece for the switching shaft 4 formed on the inner surface of the case, and the inner rotation regulating piece 8 is formed into a long pin shape so as to have appropriate elasticity, and is pressed into contact with the rotation regulating protrusion 4b. The position of the switching shaft 4 is thus regulated.

Further, the rotation restriction piece 9 restricts the rotation range of the switching shaft 4 in conjunction with the rotation restriction notch 4c.

When using a power source with a commercial frequency of 50 Hz, by setting the switching shaft 4 to rotate, the upper part of the switching pinion 6 is linked with the gear G1 of the reduction gear system G, and the switching pinion 7 is connected with the gear G1 of the reduction gear system G. separated, and 60Hz
When using a power source of By appropriately setting the number of teeth of .7, the gear G1 can be rotated at a constant rate regardless of the power frequency.

Reference numeral 10 denotes a main shaft (set shaft) whose upper end protrudes outside the case so that it can be operated from the outside, and a main gear 11 connected to the gear system G is fixed in the middle by a friction plate 12. Further, a main cam 13 having a notch 13a on its outer periphery is loosely fitted.

Reference numeral 14 denotes a reverse cycle switching device, the details of which are shown in FIG. 2, including a switching body 15, a driven plate 16, two pairs of switching pinions 17, 18, 19, and 20 pivotally supported by the driven plate 16, and
It consists of an intermediate gear that is always connected to the upper part of the switching pinions 17, 1B, 19, 20.

As shown in FIG. 3, the switching body 15 has a crank-shaped through hole 15b1 and a positioning arm 15 in the middle of a knob portion 15a1 that protrudes to the outside through a through hole 23 formed in the case 22.
c are formed respectively.

Reference numeral 24 denotes a transmission gear, which is connected to the lower portion of the pinion G2a of the gear G2 of the reduction gear system G, and is also connected to a cam gear 27, which will be described later.

The driven plate 16 and the intermediate gear 21 are connected to the transmission gear 24.
is supported on the same shaft as the linking pin 16a of the driven plate 16.
is fitted into and linked to the through hole 15a of the switching body 15, and the switching body 15
The driven plate 16 is configured to rotate as the driven plate 16 moves in the directions of arrows a and c (FIG. 3).

Reference numeral 25 denotes a positioning piece provided on the inner surface of the case 22, which is shaped like a long pin so as to have appropriate elasticity, and is always in pressure contact with the positioning arm 15c of the switching body 15.

By moving the switching body 15 in the directions of arrows a and c, the following switching sets are performed.

First, as shown in FIG. 3A, the lower part of the switching pinion 17 is connected to the upper part of the pinion G2a of the gear G2, and the lower part of the switching pinion 20 is connected to the cam gear 26, which will be described later.
When the lower part of the switching pinion 18 is separated from the upper part of the pinion G2a and the lower part of the switching pinion 19 is spaced apart from the cam gear 26, the switching pinion 1 is then separated from the cam gear 26 as shown in FIG.
7 is spaced apart from the pinion G2a, the switching pinion 20 is spaced apart from the cam gear 26, and the switching pinion 18 is spaced apart from the pinion G2a.
a and the switching pinion 19 are set so that they are respectively connected to the cam gear 26.

It is assumed that the switching pinions 17, 18, 19, and 20 are respectively supported by the upper surface convex part 24a of the transmission gear 24 and rotated, and the intermediate gear 21 is supported and rotated by the cylindrical part 24b of the transmission gear 24. The pinions 17 and 18 have the same diameter and the same number of teeth, and the switching pinions 19 and 20 have the same diameter and the number of teeth at the bottom of each pinion so that the rotational speed of the cam gear 26, that is, the reversal cycle of the washing water flow, can be changed. It is assumed that .

Reference numerals 26 and 27 are cam gears, and a reversing cam 26a is fixed to the cam gear 26, and a reversing cam 27a is fixed to the cam gear 27, respectively.

R3I and R32 are reversing switches linked to the reversing cams 26a and 27a, respectively, and have two contacts 1a and lb, 2a and 2b, respectively, as shown in FIG. The reversing switch R3i is 1
a on (lb off) → 1a off (lb off) → lb off (la off) → 1b on (la off) + 1a on (lb
OFF)→..., and the reversing switch R32 is 2
a on (2b off) → 2a off (2b off) → 2b on (2a off) → 2b off (2a off) → 2a on (2
It opens and closes in a cycle of b off) →...

It is assumed that this cycle time is set differently for the reversing switches R3l and R32, as shown in FIG.

S1 is a main switch of the washing machine, and is turned off when the protrusion 28a of the movable contact piece 28 falls into the notch 13a of the main cam 13, and turned on when it rides on the outer periphery.
(Fig. 4) is a changeover switch having two contacts A and B, which can be changed by manual operation.As shown in Fig. 4, the main switch S1 is connected to a power supply E, a timer motor TM, and A reversing switch R is connected to the changeover switch S2 via a contact A.
3l is connected to a reversing switch R32 via a contact B, and a washing motor M is connected to the reversing switches R8i and R32.

The operation in the above configuration will be explained.

First, as shown in FIG. 3A, when the knob portion 15a of the switching body 15 is manually set in advance so as to come into contact with the right end portion of the through hole 23, the positioning piece 25 contacts the low step portion of the left end of the positioning arm 15c. The connecting pin 16a comes into contact with the left end of the through hole 15b, and as mentioned above, the switching pinion 17 is connected to the pinion G2a of the gear G2 of the reduction gear system G, and the cam gear 26 is connected to the pinion G2a of the gear G2 of the reduction gear system G. The switching pinion 20 is connected.

Then, when the main shaft 10 is set according to the desired time, the main switch S1 is turned on by the main cam 13, the timer motor TM is energized, and the changeover switch S2 turns on the washing machine via either the reversing switch R3l or the reversing switch R32. Motor M is energized.

After setting, the main shaft 10, the switching pinion 17, and the transmission gear 24 are moved at a predetermined speed via the reduction gear system G using the timer motor TM as a driving source.

As shown in FIG. 3A, the intermediate gear 21 rotates as a result of the switching pinion 17, the cam gear 26 rotates via the switching pinion 20, and the cam gear 27 rotates via the transmission gear 24.

At this time, the switching pinions 18 and 19 idle.

Therefore, the reversing switch R is activated by the reversing cam 26at27a.
3I and RG2 open and close in the reversal cycles shown in FIG. Washing or rinsing is carried out using water flow in the reverse cycle shown in Figures A or B.

When the set time has elapsed, the main switch S1 is turned off by the main cam 13, the timer motor TM and the washing motor M are stopped, and washing or rinsing is completed.

Next, when the knob 15a of the switching body 15 is manually moved in the direction of arrow a from the state shown in FIG. After sliding into contact with the middle high stage part, it engages with the right end low stage part, and the linking pin 16a comes into contact with the right end part of the through hole 15b, and the driven plate 16 rotates in the direction of the arrow. As shown in FIG. 3, a switching pinion 18 is connected to the pinion G2a of the gear G2, and a switching pinion 19 is connected to the cam gear 26.

When the main shaft 10 is set according to a desired time, the main switch S1 is turned on and the timer motor TM and washing motor M are energized.

After setting, the main shaft 10, the switching pinion 18, and the transmission gear 24 are each moved at a predetermined speed via the reduction gear system G using the timer motor TM as a driving source.

As shown in FIG. 3, the intermediate gear 21 rotates as a result of the switching pinion 18, the cam gear 26 rotates via the switching pinion 19, and the cam gear 27 rotates via the transmission gear 24.

At this time, the switching pinions 17, 20 idle.

Therefore, the reversing switch R is activated by the reversing cam 26a*27a.
3I and R32 open and close in the reversal cycles shown in Fig. 5c and B, respectively, so if the selector switch S2 is switched in advance so that the contact A is turned on as desired, the above-mentioned Fig. 5A and B can be performed. is the water flow of a different reversal cycle in Figure 5C,
Washing or rinsing is performed.

When the set time has elapsed, the main switch S1 is turned off by the main cam 13, the timer motor TM and the washing motor M are stopped, and washing or rinsing is completed.

When the knob 15a of the switching body 15 is manually moved in the direction of arrow C from the state shown in FIG. 3, the driven plate 16 rotates in the direction of arrow d and returns to the state shown in FIG. 3A again.

Therefore, by switching the selector switch S2 and switching the reversing cycle switching device 14, the three reversing cycles shown in FIG. 5 A, B, and C can be selected depending on the amount of laundry, the fabric, the type of dirt, etc. can.

In this embodiment, the switching pinion of the reverse cycle switching device 14 is composed of four pinions 17.18 and 19.20, and 17.1 of the four switching pinions
8 and remove the two pinions of gear G2 of reduction gear system G.
Alternatively, two of the four switching pinions 19.20 may be removed, and the diameters and gears of the remaining two switching pinions 17.18 may be changed, respectively. Set the intermediate gear 21 as appropriate.
The cam gear 26 may be directly connected to the cam gear 26.

Further, in this embodiment, the reduction gear system G is connected to the reversing switch R3l via the reversing cycle switching device 14, and to the reversing switch R32 via the transmission gear 24, but instead of the transmission gear 24, 4. The reversing cycle switching device is provided, and two reversing cycle switching devices are provided. It may also be possible to select between two different reversal cycles.

As described above, according to this invention, the on/off cycle of the reversing switch R3l can be changed into two by the reversing cycle switching device 14.
For example, conventionally, to obtain these reversal cycles, two reversal cams and two reversal switches were used.
Compared to the case where different types are provided, the number of parts and assembly man-hours can be significantly reduced.

In addition, since the number of reversing cams and reversing switches can be reduced, the timer itself can be made more compact, and the restrictions on the location of mounting on controlled equipment due to larger timers can be eliminated. has.

Furthermore, in the present invention, the switching of the reversal cycle is performed using the knob 1.
Not only is it easy to use since it can be performed by only the slide operation shown in step 5, but it also has an extremely practical effect in that there is no need to worry about malfunctions due to the simple configuration.

[Brief explanation of drawings]

The drawings show an embodiment of this invention: Fig. 1 is an exploded perspective view, Fig. 2 is an exploded perspective view of its main parts, Fig. 3 is an explanatory diagram of its operation, and Fig. 4 is an overall wiring of the washing machine. Figure 5.
The figure is a time chart. 10...Main shaft, 13...Main cam, 14
...Reverse cycle switching device, 15...
Switching body, 16... Driven plate, 17. 1B,
19.20...Switching pinion, 21...
・Intermediate gear, 26...Cam gear, TM...
・・Timer motor, G・・・・Reduction gear system, S
...Main switch, R81...Reverse switch.

Claims (1)

[Scope of utility model registration request] A main switch S1 that is turned on and off by a main cam 13 mounted on a main shaft 10 that is slowed down by a timer motor via a reduction gear system G; a main switch S1 that is interposed between the reduction gear system G and the intermediate gear 21; and two pairs of switching pinions 17, 18, 19, 2 which are alternately connected to and connected to the intermediate gear 21.
0, an inversion device consisting of a driven plate 16 that entirely supports the switching pinions 17, 18, 19, and 20 and revolves around the intermediate gear 21, and a switching body 15 that revolves and positions the driven plate 16. It consists of a cycle switching device 14, a cam gear 26a fixed to a cam gear 26 that engages and disengages with the reversing cycle switching device 14, and a reversing switch R3l that is turned on and off by the reversing cam 26a. The two pairs of switching pinions 17, 18, 19, 20 are moved in the C direction and fixed each time by the positioning arm 15c, and the linking pin 16a is driven by the through hole 15b of the switching body 15. An automatic reversing washing machine characterized in that either one of these is selectively connected to a reduction gear system G and a cam gear 26, and the reversing time of the reversing switch R3l is changed by changing the rotational speed of the cam gear 26a. control device.