JP2620671B2 - Washing machine water flow switching device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for switching between a strong and a weak water flow by switching a forward / reverse drive time ratio of a pulsator in a washing machine.

[0002]

2. Description of the Related Art Conventionally, a water flow switching device of this type of washing machine has a push button structure, and the push button itself switches between a strong and weak water flow, in other words, a forward / reverse rotation time ratio of a pulsator. It has various electric contacts and electric contact pieces, and is configured as an electric changeover switch connected to a washing timer via a lead wire. By the operation of the push button, the strong / weak switching of the water flow, that is, the setting of the washing timer for determining the forward / reverse drive time ratio of the pulsator can be automatically performed. (Japanese Utility Model Application Laid-open No. 64-29731: H01H 13/4 Japanese Utility Model Application Laid-open No. 62-1220985: D62F
39/08)

[0003]

In such a conventional apparatus, the strength and weakness of the water flow can be switched with a single touch. On the other hand, a plurality of contact pieces and contacts are provided on the push button itself. In addition to the large number of points, the assembly work is also cumbersome, leading to an increase in cost, as well as poor contact due to wear of the contacts. There is a problem that there is a risk of electric shock due to contact with the device.

The present invention has been made in view of the above circumstances, and has as its object to switch between strong and weak water flows.
In other words, by setting the setting of the washing timer by mechanical operation, it is possible to use the washing machine stably over time, the number of parts is small, the assembling work is easy, and the water flow of the washing machine is also excellent in safety against electric shock etc. A switching device is provided.

[0005]

According to a first aspect of the present invention, a water flow switching device for a washing machine includes a washing timer having an operation unit for setting a forward / reverse rotation time ratio of a pulsator in accordance with strong and weak water flows. In the water flow switching device for a washing machine comprising: an operation shaft having a rotation operation unit at one end, the operation shaft being connected to the operation shaft and the operation unit, and transmitting the rotation operation of the operation shaft to the operation unit. It is characterized by comprising interlocking means for operating this.

A water flow switching device for a washing machine according to a second aspect of the present invention comprises a pulsator for normal rotation,
In a water flow switching device for a washing machine having a washing timer having an operation unit for setting a reverse rotation time ratio, a lever is provided on the operation unit of the washing timer, and an operation shaft having one arm and a plurality of arms are provided. An interlocking shaft is provided, and one arm of the interlocking shaft is pivotally connected to the lever, and the other arm is pivotally connected to the arm of the operation shaft.

[0007]

According to the first aspect of the present invention, the strong and weak switching of the water flow in the washing timer is performed by mechanically transmitting the rotation of the operating shaft to the operating section of the washing timer through the interlocking means. The operation is reliable and can be used for a long time, and the fear of electric shock or the like is also eliminated.

According to the second aspect of the present invention, when the operating shaft is rotated, the interlocking shaft is rotated through the arm and the arm of the interlocking shaft, and the rotation of the interlocking shaft is washed through another arm and lever. This is transmitted to the timer, and the forward / reverse drive time ratio of the pulsator is set.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 is a schematic view of a two-tub washing machine provided with a water flow switching device according to the present invention. In the drawing, reference numeral 1 denotes a frame that forms a housing. In the frame 1, a washing tub 2, a dehydration tub 4 and driving motors 5, 6 for driving them are provided.
Are arranged. Reference numeral 3 denotes an outer tub disposed around the dehydration tub 4.

Reference numeral 7 denotes a control box, and a knob 8 for setting a washing timer is provided on the operation panel 11 on the surface of the control box.
A knob 9 for switching the water flow, various other setting levers 10, and the like are provided. 2 is an enlarged side view taken along line II-II of FIG. 1, and FIG. 3 is a bottom view taken along line III-III of the washing timer shown in FIG. Inside the operation panel 11, a washing timer 12, an interlocking shaft 13, and an operation shaft 14 are mounted close to each other. The washing timer 12 includes a rotating shaft 12a as a first operating portion for setting a washing time and a lever 12b as a second operating portion for switching a forward / reverse driving time ratio of a pulsator for switching between strong and weak water flows. The rotary shaft 12a is passed through a hole 11a of the operation panel 11, and is fixed so as to protrude upward. A knob 8 is attached to the upper end of the rotary shaft 11a.

The interlocking shaft 13 is provided with arms 13b and 13c extending radially outward at two diametrical positions on a lower end peripheral wall thereof.
It is rotatably supported by the operation panel 11 while being inserted into the hole 11b. The operating shaft 14 has a shaft 14a at its upper end,
Further, an arm 14b extending in the radial direction is provided on the lower peripheral wall, and is rotatably supported by the operation panel 11 in a state in which the rotation shaft 14a protrudes upward through the hole 11c of the operation panel 11, A knob 9 is mounted on the upper end of the shaft 14a. The lever 12b of the washing timer 12 and the arm 13b of the interlocking shaft 13 are pivotally connected to each other with a connecting rod 12c interposed therebetween, and the arm 13c of the interlocking shaft 13 and the arm 14b of the operation shaft 14 are connected to each other. The pivots are connected in the same way.

FIG. 4 shows the operation of the apparatus of the present invention.
7 will be described with reference to FIGS. Figure 4 shows the lever
12b is set to the A position, and FIG.
FIG. 5B shows the case where b is set to the B position where the forward / reverse drive time ratio is different from the A position, and FIGS. 5 and 6 show the operation at the intermediate position between the two. When the knob 9 is turned from the position shown in FIG. 4 to rotate the operating shaft 14, the interlocking shaft 13 rotates through the arm 13c connected to the arm 14b of the operating shaft 14, and the rotation of the interlocking shaft 13 13b,
The power is transmitted to the lever 12b via the connecting rod 12c, and the lever 12b rotates to be switched to the position B, whereby the strong / weak water flow, in other words, the forward / reverse drive time ratio of the pulsator is switched.
The washing time can be set independently by turning the knob 8.

If the knob 9 is rotated in the reverse direction from the state shown in FIG. 7, the above-described operation is reversed and the state shown in FIG. 4 is set via the states shown in FIGS. The lever 12b returns to the position A. The mutual rotation angles of the operation shaft 14, the interlocking shaft 13 and the lever 12b can of course be appropriately set by the length, the overhang angle and the like of each arm 12b, 12c, 13b, 13c, 14b.

In the above-described embodiment, the operation shaft 14 and the interlocking shaft 13 are connected to each other by using the arms 12b to 14b. However, the present invention is not particularly limited thereto. It may be performed by connection. In the above-described embodiment, the operation panel showing the strong and weak directions of the water flow is shown.
11 shows a configuration in which one interlocking shaft 13 is provided to correspond the display on the surface and the positions A and B of the lever 12b.
It goes without saying that the fourteen arms 14b may be directly pivotally connected to the connecting rod 12c, and conversely, a plurality of interlocking shafts may be provided.

[0015]

As described above, in the apparatus of the present invention, the switching between the strong and weak water flow in the washing timer, in other words, the setting of the forward / reverse switching time ratio of the water flow can be performed by rotating the operating shaft. Can be performed mechanically via the operating axis,
There are no electric parts in the interlocking means, and there is no danger of electric shock even when operated with wet hands, as well as the number of parts as a whole is small, assembling work is simplified, and interlocking is also possible. Since the means is constituted by pivotally connecting the arm provided on the interlocking shaft and the arm provided on each of the operation unit and the operation shaft, the present invention has excellent effects such as reliable transmission of operation.

[Brief description of the drawings]

FIG. 1 is a perspective view of a washing machine to which a water flow switching device according to the present invention is applied.

FIG. 2 is an enlarged sectional view taken along line II-II in FIG.

FIG. 3 is a bottom view taken along line III-III of FIG. 2;

FIG. 4 is an operation explanatory diagram.

FIG. 5 is an operation explanatory diagram.

FIG. 6 is an operation explanatory diagram.

FIG. 7 is an operation explanatory diagram.

[Explanation of symbols]

 1 frame 2 washing tub 3 outer tub 4 dehydration tub 5,6 motor 7 control box 8,9 knob 11 operation panel 12 washing timer 13 interlocking axis 14 operation axis

Claims (2)

(57) [Claims] 1. A water flow switching device for a washing machine having a washing timer having an operation portion for setting a forward / reverse rotation time ratio of a pulsator in accordance with the strength and weakness of a water flow. A washing machine, comprising: an operating shaft provided with the operating shaft; and an interlocking means connected to the operating shaft and the operating unit, for transmitting a rotation operation of the operating shaft to the operating unit and operating the operating unit. Water flow switching device. 2. A water flow switching device for a washing machine having a washing timer having an operation section for setting a forward / reverse rotation time ratio of a pulsator in accordance with the strength and weakness of the water flow, respectively. A lever is provided, and an operation shaft having one arm and an interlocking shaft having a plurality of arms are provided,
A water flow switching device for a washing machine, wherein one arm of the interlocking shaft is pivotally connected to the lever and the other arm is pivotally connected to the arm of the operation shaft.