JPS6314790Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a dehydrating and dehydrating washing machine in which a single tub is rotated at low speed for washing and at high speed for dewatering.

[Technical background of the invention]

Recently, in order to prevent laundry from getting damaged, dehydrating and dehydrating washing machines have abolished the conventional pulsator and instead wash the laundry by rotating one tub itself at a low speed. It is also being considered that dehydration can be carried out by rotating the tank body at high speed.

[Problems with background technology]

By the way, in the above-mentioned case, it is necessary to switch between rotating one tub at low speed and rotating at high speed, and there is a It becomes necessary to provide a transmission mechanism. Various transmission mechanisms have been considered, such as those using sliding gears and those using differential gears, but all of them are complex and large-scale, and in the end, the gear train must be changed to achieve rotation. In order to change the ratio, there is a risk that the meshing will become uncertain when changing the gear train, that is, when connecting the gears that should be meshed.Furthermore, it is necessary to leave some margin in the distance between the shafts to ensure smooth gear connection. Due to the repeated engagement and disengagement of the gears, rattling occurs between the two gears, resulting in overall lack of operational reliability.Furthermore, each gear train requires a support shaft to support the gears. A large gear case is also required to support these spindles, making it even more bulky, and this is extremely inconvenient in terms of size and reliability of operation when used in the above-mentioned dehydrating and washing machine.

[Purpose of invention]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a washing and dehydration washing machine that can perform washing and dewatering using a single tub, and can change the speed with ease and with a simple and compact structure.

[Summary of the idea]

The present invention is a dehydrating and washing machine that rotates one tub at a low speed for washing and at a high speed for dewatering. an inner ring gear which is arranged in the center of the wheel and has teeth on its outer circumferential surface and an input shaft in the center, and an inner ring gear which is arranged between the inner ring gear and the outer ring gear so as to mesh with each tooth part of these two gears. It has a planetary gear arranged thereon, and an output shaft part which is provided to pivotally support the planetary gear and rotate with the circumferential movement of the planetary gear, and which is connected to the tank shaft of the tank body at one end in the axial direction. a clutch comprising a gear unit comprising a driving member having a connecting portion at an end thereof, and selectively transmitting rotational force from a driving source to either the input shaft portion, the input shaft portion, or the connecting portion; and a lock mechanism that restricts the free rotation of the outer gear when rotation is transmitted to the input shaft portion by the clutch, and releases the restriction when rotation is transmitted to the input shaft portion and the coupling portion, The feature is that the gear change operation for the tank body can be performed without changing the gear train.

[Example of idea]

An embodiment of the present invention will be described below with reference to the drawings. First, in Fig. 1, 1 is an outer box, 2 is a water tank elastically suspended inside the outer box 1, 3 is a drain port formed at the bottom of the water tank 2, and 4 is a drain port 3 that leads out of the machine. This is a drain valve installed in the middle of the drain pipe 5. On the other hand, 6 is a tank body, which is disposed within the water receiving tank 2, and whose tank shaft 6a is connected to an output shaft portion 24 of a gear unit 12, which will be described later.
Further, 7 is a drive mechanism section, which is provided below the water receiving tank 2 together with a washing machine motor 8 serving as a drive source. Now, to explain the above-mentioned drive mechanism part 7 in detail, in FIG. 2, 9 is a bearing case provided at the bottom of the water receiving tank 2. The tank shaft 6a is inserted through and supported. 12 is a gear unit, which is constructed as follows. That is, in FIGS. 2 and 3, reference numeral 13 denotes an outer ring gear, which has teeth 14 formed on its inner circumferential surface, and protrusions 15 intermittently formed on its outer circumferential surface. Reference numeral 16 denotes an inner ring gear disposed at the center of the outer ring gear 13. Teeth 17 are formed on the outer peripheral surface of the inner ring gear 16, and an input shaft part 18 is vertically provided at the center. Reference numeral 19 denotes, for example, four planetary gears, each of which has teeth 20 formed on its outer circumferential surface and a shaft insertion hole 21 formed in its center. They are arranged at equal intervals between the gear 13 and the gears 16 and 13 so as to mesh with the teeth 17 and 14 of the gears 16 and 13, respectively. Reference numeral 22 denotes a connecting member, which is formed by connecting an upper member 22a and a lower member 22b. Four support shafts 23 are formed on the upper member 22a, and a cylindrical output shaft is provided at the upper end of the connecting member 22, which is one end in the axial direction (vertical direction in FIG. 2), that is, at the upper end of the upper member 22a. A cylindrical connecting portion 24 is formed at the other end in the axial direction, that is, at the lower end of the lower member 22b.
5 is formed, and the input shaft portion 18 passes through the inside of this connecting portion 25. The connecting member 22 pivotally supports the planetary gear 19 by inserting its support shaft 23 into the shaft insertion hole 21 of the planetary gear 19, and as the planetary gear 19 rotates. It is configured to rotate, and its output shaft portion 24 is connected to the tank shaft 6a. Further, a boss portion 26 of a pulley 26 is attached to the input shaft portion 18 of the inner ring gear 16.
a is attached. In contrast to the above, in FIG. 1, 27 is a belt transmission mechanism, which includes the pulley 26, a pulley 28 attached to the rotating shaft of the washing machine motor 8, and a belt transmission mechanism installed between the pulleys 26 and 28. It is composed of a belt 30. 3
Reference numeral 1 designates a control lever pivotally mounted on the outer bottom of the water receiving tank 2, and the rotation of this lever is controlled by an electromagnet (not shown) that controls opening and closing of the drain valve 4. In FIGS. 2 and 4, reference numeral 32 denotes a clutch, which is composed of a coil spring whose one end is fixed to the connecting portion 25 of the gear unit 12 and whose other end is wound around the boss portion 26a of the pulley 26. It consists of a clutch member 33 and a clutch bar 34 that locks a locked portion 33a formed on the clutch member 33, and the clutch lever 34 is attached to the control lever 31.
The clutch lever 34 is adapted to be rotated together with the control lever 31 when the control lever 31 is rotated by the electromagnet for opening and closing the drain valve 4. When the rotation position is in the direction of arrow A in Figure 4 (indicated by the two-dot chain line)
In this case, the locked portion 33a of the clutch member 33 is locked, and in this case, due to the locking, the tightening force of the clutch member 33 is not applied to the boss portion 26a of the pulley 26, and the washing The rotational force of the machine motor 8 is transmitted only to the input shaft portion 18 of the gear unit 12. Furthermore, when the drain valve 4 is opened, the clutch lever 34 is in the rotational position (indicated by the solid line) in the direction opposite to the arrow A in FIG. 4, and the locked state with the locked portion 33a of the clutch member 33 is released. In this case, the tightening force of the clutch member 33 can act on the boss portion 26a of the pulley 26, and the washing machine motor 8
The rotational force is integrally transmitted to both the input shaft portion 18 and the connecting portion 25. In FIGS. 2 and 3, 35 is a lock mechanism, which is composed of the protrusion 15 formed on the outer peripheral surface of the outer gear 13 and a lock lever 36 provided on the control lever 31. There is. This lock lever 36 is designed to rotate in the direction of arrow B in FIG. 3 (same direction as arrow A in FIG. 4) and in the opposite direction of arrow B as the control lever 31 rotates. In a state where the clutch lever 34 locks the locked portion 33a of the clutch member 33, the lock lever 36
locks the protrusion 15 in the rotational position in the direction of arrow B (indicated by the two-dot chain line in FIG. In the unlocked state, the lock lever 36 is in a rotational position opposite to the direction of arrow B (shown by the solid line in FIG. The outer gear 13 is restrained from free rotation when rotation is transmitted to the input shaft portion 18 by the clutch 32, and the restraint is released when rotation is transmitted to the input shaft portion 18 and the connecting portion 25.

The operation of the above configuration will be explained. First, when washing is performed, the electromagnet is energized to close the drain valve 4, and by rotating the control lever 31 related to this, the clutch lever 3 is moved as shown by the two-dot chain line in FIG.
4 to the locking position with respect to the locked portion 33a of the clutch member 33, and the lock lever 36
The protrusion 15 of the outer gear 13 as shown by the two-dot chain line in FIG.
Move it to the locking position. Then, the laundry is stored in the tub 6 along with an appropriate amount of detergent and water, and the washing machine motor 8 is energized and driven. Then, the rotational force of the washing machine motor 8 is transmitted to the input shaft portion 18 of the gear unit 12, causing the inner ring gear 16 to rotate at high speed, causing the planetary gear 19 to rotate at a low speed inside the outer ring gear 13 whose rotation is restricted. During the rotation, the connecting member 22 rotates at a speed lower than the rotational speed of the input shaft portion 18, and as a result, the tank shaft 6a and therefore the tank body 6 are rotated at a low speed. By rotating the tub 6 at a low speed, the laundry is washed with detergent without causing any damage to the fabric.
Note that rinsing is also performed in the same manner.

Next, when the laundry is to be dehydrated, the electromagnet is cut off to open the drain valve 4, and the related rotation of the control lever 31 causes the clutch lever 34 to be engaged with the locked portion 33a of the clutch member 33. At the same time, the lock lever 36 is released from the protrusion 15 of the outer gear 13. When the washing machine motor 8 is energized and driven, its rotational force is transferred to the input shaft portion 18 and the connecting portion 2 by the clutch 33.
5. In this case, the outer gear 13 is in a free rotation state, so the gear unit 1
The entire machine 2 is rotated at high speed without being changed in speed (deceleration), and the laundry is dehydrated by the pumping action of the tub 6.

According to this embodiment, the tank shaft 6a of the tank body 6
Since the gear change is performed by switching between rotating a part of the gear unit 12 (inner ring gear 16 and planetary gear 19) and rotating the entire gear unit 12, it is easy to change the gear train. Therefore, unlike when changing gears, the gears 13, 16, 19 in the gear unit 12 remain in mesh, and there is no uncertainty in the meshing relationship or rattling. Since the gear unit 12 is configured by housing the inner gear 16 and the planetary gear 19 in the gear 13,
It is compact, and unlike transmission mechanisms that change gear trains, there is no need for a support shaft, etc., which is required for each gear train.Therefore, there is no need for a gear case, etc. to support such a support shaft. The configuration for changing gears can be made simple and compact, and the reliability of operation can also be improved.

[Effect of idea]

As explained above, the present invention rotates one tub body at a low speed for washing and at a high speed for dewatering. An inner gear is disposed at the center of the outer gear, has teeth on its outer peripheral surface, and has an input shaft in the center, and meshes with the teeth of both gears between the inner gear and the outer gear. and an output shaft portion which is provided at one end in the axial direction and is connected to the tank shaft of the tank body, which is provided to pivotally support the planetary gears and rotate as the planetary gears circulate. and a drive member having a connecting portion at the other end, and a clutch that selectively transmits rotational force from a drive source to either the input shaft portion, the input shaft portion, or the connecting portion. and a locking mechanism that restrains free rotation of the outer gear when rotation is transmitted to the input shaft by the clutch, and releases the restraint when rotation is transmitted to the input shaft and the coupling part. This is a washing machine, in which the speed of the rotation of the tub can be changed reliably with a simple and compact structure, and the overall structure of the washing machine can be simplified and the cost can be reduced. This has the effect of making it possible to improve the

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, with FIG. 1 being an overall longitudinal sectional side view, and FIG. 2 being an enlarged longitudinal sectional side view of the main parts.
FIG. 3 is a cross-sectional view of the gear unit portion, and FIG. 4 is a cross-sectional view of the clutch portion. In the figure, 4 is a drain valve, 6 and 6a are a tank body and a tank shaft, 8 is a washing machine motor (drive source), 12 is a gear unit, 13 is an outer gear, 14 is a tooth, 15 is a protrusion, and 16 is an outer ring. gear, 17 is a tooth portion, 18 is an input shaft portion, 19 is a planetary gear, 22 is a connecting member, 24 is an output shaft portion, 25 is a connecting portion, 27 is a belt transmission mechanism,
32 is a clutch, 33 is a clutch member, 34 is a clutch lever, 35 is a lock mechanism, and 36 is a lock lever.

Claims (1)

[Scope of utility model registration request] One tank body is rotated at low speed for washing and rotated at high speed for dehydration, and consists of an outer ring gear with teeth on the inner circumferential surface, and an outer ring gear located in the center of this outer ring gear. an inner gear having teeth on its surface and an input shaft in the center; a planetary gear disposed between the inner gear and the outer gear so as to mesh with the teeth of both gears; The planetary gear is supported so as to rotate as the planetary gear rotates, and has an output shaft portion connected to the tank shaft of the tank body at one end in the axial direction, and a connecting portion at the other end. a clutch that selectively transmits rotational force from a drive source to either the input shaft portion, the input shaft portion, or the coupling portion; and the input shaft portion by the clutch. A dehydrating/washing machine comprising: a lock mechanism that restricts the free rotation of the outer gear when the rotation is transmitted to the input shaft portion and the lock mechanism that releases the restriction when the rotation is transmitted to the input shaft portion and the connecting portion.