WO2018019257A1

WO2018019257A1 - Washing machine

Info

Publication number: WO2018019257A1
Application number: PCT/CN2017/094504
Authority: WO
Inventors: 川上刚史; 中西隆; 吉田贤司
Original assignee: 青岛海尔洗衣机有限公司; Aqua株式会社
Priority date: 2016-07-26
Filing date: 2017-07-26
Publication date: 2018-02-01
Also published as: JP2018015143A; CN109563665A; CN109563665B

Abstract

A washing machine (1), which can effectively utilize a movement of an outer tub (20) and a spherical washing and de-watering tub (30) after loading water, so as to improve cleaning performance. The fully automatic washing machine (1) is provided with an outer tub (20), which is rotatably disposed about a vertical rotation axis (R1) within a casing (10) and which is capable of storing water; a ball-shaped washing and de-watering tub (30), which is rotatably disposed about a horizontal rotation axis (R2) within the outer tub (20) and which is capable of receiving laundry items; an outer tub motor (140), for rotating the outer tub (20); a de-watering tub motor (70), for rotating the washing and de-watering tub (30); and a control unit (200), for driving the outer tub motor (140) while also driving the de-watering tub motor (70) during a washing operation.

Description

washing machine

Technical field

The present invention relates to a washing machine.

Background technique

Conventionally, there has been known a washing machine in which a washing and dewatering tub which accommodates laundry and which is washed, rinsed, and dehydrated is formed into a spherical shape. For example, Patent Document 1 discloses a washing machine including a support body that is disposed in an outer tub that can store water, and that is rotatable about a vertical support body rotation axis; The spherical washing tub is rotatably supported by the support body around the horizontal washing tub rotation axis, and the washing tub can be rotated in both the horizontal direction and the vertical direction.

In the washing machine of Patent Document 1, the support body is rotationally driven by a motor. An annular washing tub rolling guide is disposed on the inner side of the outer tub, and a washing tub rotating wheel is disposed on the rotating shaft of the washing tub. When the washing tub is rotated in the horizontal direction together with the support by the rotation of the motor, the washing tub rotating wheel rolls on the washing tub rolling rail, and the washing tub also rotates in the vertical direction.

In the washing machine of Patent Document 1, the inside of the support body may be stored without providing the outer tub. That is, the support body may function as a water tank that can store water. In the case of adopting such a configuration, the number of parts can be reduced as compared with the case where the support body and the outer tub are provided.

Prior art literature

Patent literature

Patent Document 1: Japanese Reissue No. 2010-055674

Summary of the invention

Problems to be solved by the invention

In the above-described washing machine, when water can be stored inside the support body, the washing tub and the water-storing support body rotate together during washing. However, in the above-described washing machine, since the support body and the washing tub are rotated by one motor, the washing tub can only perform the movement in conjunction with the support body. Therefore, when the inside of the support body can store water in the above-described washing machine, the number of parts can be reduced, but it is difficult to effectively use the movement of the support body after the water storage and the spherical washing tub to clean. Improved performance.

The present invention has been made in view of such a problem, and an object of the invention is to provide a washing machine capable of effectively utilizing the movement of a water-filled outer tub and a spherical washing and dewatering tub to improve cleaning performance.

Solution to solve the problem

A washing machine according to a main aspect of the present invention includes: an outer tub that is rotatably disposed in a housing centered on a first rotating shaft that is inclined in a vertical direction or a vertical direction, and can store water; a spherical washing and dewatering bucket is used along the a second rotating shaft tilted horizontally or horizontally rotatably disposed in the outer tub to accommodate laundry; an outer tub motor for rotating the outer tub; and a dewatering bucket motor for making The washing and dewatering tub rotates; and the control unit drives the dehydrating bucket motor while driving the tub motor during washing.

According to the above configuration, the outer tub can be rotated around the first rotating shaft to generate a water flow in the outer tub, and the washing and dewatering tub can be rotated around the first rotating shaft and the second rotating shaft to be stirred in the washing and dewatering tank. Washing. Further, the outer tub and the washing and dewatering tub are independently rotated by the outer tub motor and the dewatering tub motor, and therefore, various rotation operations can be performed between the outer tub and the washing and dewatering tub. Therefore, it is expected that the movement of the outer tub after the water storage and the spherical washing and dewatering bucket can be effectively utilized to improve the washing performance.

In the washing machine of the present aspect, the control unit may be configured to drive the dehydration drum motor in a state where the outer tub motor is stopped during dehydration.

According to the above configuration, the washing and dewatering tub is rotated around the second rotating shaft while the outer tub is stopped, and the laundry in the washing and dewatering tub is dehydrated, so that the outer tub and the washing and dewatering tub are integrally formed first. When the rotating shaft is rotated centrally and the laundry in the washing and dewatering tub is dehydrated, the driving load is small, and the power consumption is small.

In the washing machine of the present aspect, a dewatering tub rotating shaft as the second rotating shaft may be provided in the washing and dewatering tub. In this case, the outer tub is formed to cover the washing dewatering bucket to a spherical shape of more than half, and has a bearing fitting to which a bearing portion that rotatably supports the rotating shaft of the dewatering tub is attached. Moreover, the outer tub is divided into a first outer tub member and a second outer tub member, the split surface of which passes through the center portion of the outer tub and does not touch the bearing fitting.

More specifically, the dewatering tub rotating shaft is disposed on both sides of the washing and dewatering tub, and the dewatering tub rotating shaft on one side is rotated by the dehydrating tub motor. The bearing assembly is disposed on two sides of the outer tub, and the outer tub is opposite from a position above the bearing mounting interface on one side to a position below the bearing mounting interface on the other side The second axis of rotation is obliquely divided.

According to the above configuration, the outer tub is formed to cover the washing dewatering bucket to a spherical shape of more than half, and therefore, the outer tub can be formed compactly. Further, since the outer tub is divided into the first outer tub member and the second outer tub member, the spherical outer tub can be easily formed. Further, since the divided surface of the outer tub is disposed through the center portion of the outer tub and does not touch the bearing fitting interface, it is easy to form the bearing fitting interface with a high cylindricity, and the bearing portion can be attached to the bearing fitting interface with high precision. Thereby, it is possible to prevent an offset or the like from occurring in the first rotating shaft, and it is possible to smoothly rotate the washing and dewatering tub around the first rotating shaft.

In the washing machine of the present aspect, the wiring relay unit that relays the first electric wiring extending from the dehydrating drum motor and the second electric wiring extending from the control unit may be further provided. In this case, an outer tub rotating shaft as the first rotating shaft is provided in the outer tub. Then, the wiring relay portion includes a rotating portion that rotates together with the outer tub rotating shaft, and an annular first terminal portion that is provided on an outer peripheral surface of the rotating portion and electrically connected to the first electric wiring a fixing portion disposed outside the rotating portion and not rotating together with the outer tub rotating shaft; a second terminal portion disposed at the fixing portion and electrically connected to the second electrical wiring; and conductive The contact portion extends from the second terminal portion and is in contact with the first terminal portion, and slides on the first terminal portion when the rotating portion rotates.

According to the above configuration, it is possible to prevent the electric wiring from being entangled in the outer tub when the outer tub is rotated.

Effect of the invention

According to the present invention, it is possible to provide a washing machine capable of effectively utilizing the movement of the outer tub and the spherical washing and dewatering tub after water storage to improve the washing performance.

The effects and significance of the present invention will be further clarified by the description of the embodiments shown below. However, the following embodiments are illustrative of the present invention, and the present invention is not limited by the contents described in the following embodiments.

DRAWINGS

Fig. 1 is a front view of a fully automatic washing machine in which a casing of an embodiment is shown in a transparent state.

Fig. 2 (a) is a front cross-sectional view of the fully automatic washing machine of the embodiment, and Fig. 2 (b) is an enlarged cross-sectional view showing a joint portion of the upper outer tub member and the lower outer tub member of the embodiment.

3 is a perspective view of a washing and dewatering bucket in which a right dewatering bucket rotating shaft and a left dewatering tub rotating shaft are attached in an embodiment.

Fig. 4 (a) shows a state in which the right bearing portion and the right sealing member are removed as seen from above in the embodiment. FIG. 4(b) is a perspective view of the upper outer tub member as viewed from below in the perspective view of the upper outer tub member.

Fig. 5 (a) is a perspective view of the lower outer tub member in a state in which the left bearing portion and the left seal member are removed as seen from above, and Fig. 5 (b) is a perspective view of the lower tub member as viewed from below in the embodiment. .

Fig. 6 is an enlarged cross-sectional view showing a periphery of a wiring relay unit according to an embodiment.

Fig. 7 is a block diagram showing the configuration of a fully automatic washing machine according to an embodiment.

8 is a flowchart showing a control process of the control unit of the outer tub motor and the dehydrator motor in the washing operation in the embodiment.

Description of the reference numerals

1: fully automatic washing machine (washing machine);

10: housing;

20: outer tub;

20a: upper outer tub member (first outer tub member);

20b: lower outer tub member (second outer tub member);

22a: right bearing mounting interface (bearing mounting interface);

22b: left bearing mounting interface (bearing mounting interface);

30: washing the dewatering bucket;

40a: right dewatering barrel rotation axis (dehydration barrel rotation axis);

40b: left dewatering barrel rotation axis (dehydration barrel rotation axis);

50a: right bearing portion (bearing portion);

50b: left bearing portion (bearing portion);

70: dewatering bucket motor;

140: outer drum motor;

150: wiring relay unit;

151: rotating part;

152: fixed part;

153: rotating terminal portion (first terminal portion);

155: fixed terminal portion (second terminal portion);

157: contact brush (contact portion);

160a: first electrical wiring (first electrical wiring);

160b: second electrical wiring (second electrical wiring);

200: control department;

R1: vertical rotation axis (first rotation axis);

R2: horizontal rotation axis (second rotation axis);

D: Split face.

detailed description

Hereinafter, a fully automatic washing machine 1 as an embodiment of the washing machine of the present invention will be described with reference to the drawings.

Fig. 1 is a front view of the fully automatic washing machine 1 in a state in which the casing 10 of the present embodiment is shown in a transparent state. Fig. 2 (a) is a front cross-sectional view of the fully automatic washing machine 1 of the present embodiment, and Fig. 2 (b) is an enlarged cross-sectional view showing a joint portion of the upper outer tub member 20a and the lower outer tub member 20b of the present embodiment. 3 is a perspective view of the washing and dewatering tub 30 to which the right dewatering tub rotating shaft 40a and the left dewatering tub rotating shaft 40b are attached in the present embodiment. (a) of FIG. 4 is a perspective view of the upper outer tub member 20a in a state in which the right bearing portion 50a and the right seal member 55a are removed from the upper side, and FIG. 4(b) is a view from below of the present embodiment. A perspective view of the outer tub member 20a. (a) of FIG. 5 is a perspective view of the lower outer tub member 20b in a state in which the left bearing portion 50b and the left seal member 55b are removed from the upper side, and FIG. 5(b) is a view from below of the present embodiment. A perspective view of the outer tub member 20b. FIG. 6 is an enlarged cross-sectional view showing the periphery of the wiring relay unit 150 of the present embodiment.

Referring to Fig. 1 through Fig. 6, the fully automatic washing machine 1 is provided with a casing 10 having a rectangular parallelepiped shape. A circular opening portion 11 is formed in a central portion of the top surface of the casing 10. Further, a footrest 12 is provided at four corners of the bottom surface of the casing 10.

In the casing 10, the outer tub 20 is rotatably disposed about a vertical rotation axis R1 along the vertical direction. In the outer tub 20, a spherical washing and dewatering tub 30 is disposed to be rotatable about the horizontal rotating shaft R2 in the horizontal direction. The laundry is contained in the washing dewatering tank 30. It should be noted that the vertical rotation axis R1 corresponds to the first rotation axis of the present invention, and the horizontal rotation axis R2 corresponds to the second rotation axis of the present invention.

The washing and dewatering tub 30 includes a tub body 31 and an inner lid 32. The tub body 31 is made of, for example, stainless steel or the like The hemispherical upper member 33 and the lower member 34 formed of a metal material having excellent corrosion resistance are joined together, and the

flange portions

33a and 34a are fixed to each other by welding or the like. A plurality of dehydration holes 35 are formed in one surface of the tub body 31. Further, the barrel main body 31 is provided with a circular inner insertion opening 36, and the inner insertion opening 36 is opened and closed by the inner lid 32. The inner lid 32 is formed of, for example, a resin and has a shape in which the protrusions are curved. A handle portion 32a that can be grasped by a finger is formed at a central portion of the inner lid 32. The portion of the inner side inlet port 36 of the tub body 31 is flat, and when the inner inlet port 36 is closed by the inner lid 32, the washing and dewatering tub 30 as a whole takes the shape of the sphere.

On the right side of the washing and dewatering tub 30, a right shaft mounting portion 37a formed as a vertical flat surface is provided at a center portion when viewed from the right. Further, on the left side of the washing and dewatering tub 30, a left shaft mounting portion 37b formed as a vertical flat surface is provided at a central portion when viewed from the left. The right dewatering tub rotating shaft 40a is attached to the right shaft mounting portion 37a by a plurality of screws 41a, and the left dewatering tub rotating shaft 40b is attached to the left shaft mounting portion 37b by a plurality of screws 41b. The right dewatering tub rotating shaft 40a and the left dewatering tub rotating shaft 40b are horizontal rotating shafts R2. It should be noted that the right dewatering tub rotating shaft 40a and the left dewatering tub rotating shaft 40b correspond to the dehydrating tub rotating shaft of the present invention.

On the inner surface of the washing and dewatering tub 30, a plurality of baffles 38 are provided. Further, on the inner surface of the washing and dewatering tub 30, a right cover 39a for covering the screw 41a is attached to the position of the right shaft mounting portion 37a, and a left cover 39b for covering the screw 41b is attached to the left shaft mounting portion 37b.

The outer tub 20 is formed of, for example, a resin material, and has a spherical shape that covers the washing and dewatering tub 30 to more than half. A circular outer insertion port 21 is formed in the outer tub 20 so as to cut the upper portion in the horizontal direction. On the right side of the outer tub 20, a circular right bearing fitting 22a is formed at a central portion when viewed from the right. On the outer surface of the outer tub 20, a right mounting portion 24a is provided around the right bearing fitting interface 22a. The right mounting portion 24a is formed as a flat surface and has a plurality of screw mounting holes 23a. Further, on the left side of the outer tub 20, a circular left bearing attachment port 22b is formed at a central portion when viewed from the left. On the outer surface of the outer tub 20, a left mounting portion 24b is provided around the left bearing fitting 22b, and the left mounting portion 24b is formed as a flat surface having a plurality of screw mounting holes 23b. It should be noted that the right bearing fitting interface 22a and the left bearing fitting interface 22b correspond to the bearing fitting interface of the present invention.

The outer tub 20 is divided into an upper outer tub member 20a and a lower outer tub member 20b, and the split surface D passes through the center portion of the outer tub 20 and does not touch the right bearing fitting 22a and the left bearing fitting 22b. That is, the outer tub 20 is obliquely divided with respect to the horizontal rotation axis R2 so as to be positioned from the position above the left bearing fitting 22b toward the position below the right bearing fitting 22a. Thereby, the upper outer tub member 20a is formed with the right The bearing fitting interface 22a is formed with a left bearing fitting 22b in the lower outer tub member 20b. It should be noted that the upper outer tub member 20a corresponds to the first outer tub member of the present invention, and the lower outer tub member 20b corresponds to the second outer tub member of the present invention.

A plurality of screw insertion holes 25a are formed in the lower end surface of the upper outer tub member 20a. Each of the screw insertion holes 25a is connected to a screw accommodating recess 25b formed on the outer surface of the upper outer tub member 20a. Among these, a screw attachment hole 25c is formed at a position directly below the right bearing attachment port 22a of the lower end surface of the upper outer tub member 20a, and is not a screw insertion hole 25a. Further, an annular fitting rib 26a is formed on the lower end surface of the upper outer tub member 20a. It should be noted that in Fig. 4(a), only one screw accommodating recess 25b has a shape indicated by a broken line.

A right bearing portion 50a is attached to the right bearing fitting 22a of the upper outer tub member 20a. The right bearing portion 50a includes a cylindrical bearing housing 51a and a rolling bearing 52a housed in the bearing housing 51a. An annular mounting flange 54a having a plurality of screw insertion holes 53a is formed in the bearing housing 51a. The right bearing portion 50a is inserted into the right bearing fitting 22a from the outside in a state in which the annular right sealing member 55a is attached to the front side. The mounting flange 54a is fixed to the screw attachment hole 23a of the right attachment portion 24a by a plurality of screws 56a, and the right bearing portion 50a is fixed to the right bearing attachment interface 22a. The water leakage from the right bearing fitting 22a is prevented by the water sealing function of the right sealing member 55a. It should be noted that the right bearing portion 50a corresponds to the bearing portion of the present invention.

A plurality of screw attachment holes 25c are formed in the upper end surface of the lower outer tub member 20b. Here, the screw insertion hole 25a is formed at a position corresponding to the screw attachment hole 25c of the upper outer tub member 20a at the upper end surface of the lower outer tub member 20b, and is not the screw attachment hole 25c. The screw insertion hole 25a is connected to a screw accommodating recess 25b formed on the outer surface of the lower outer tub member 20b. Further, an annular fitting groove portion 26b is formed on the upper end surface of the lower outer tub member 20b.

A left bearing portion 50b is attached to the left bearing fitting 22b of the lower outer tub member 20b. The left bearing portion 50b includes a cylindrical bearing housing 51b and a rolling bearing 52b housed in the bearing housing 51b. An annular mounting flange 54b having a plurality of screw insertion holes 53b is formed in the bearing housing 51b. The left bearing portion 50b is inserted into the left bearing attachment port 22b from the outside in a state in which the annular left sealing member 55b is attached to the front side. The mounting flange 54b is fixed to the screw attachment hole 23b of the left attachment portion 24b by a plurality of screws 56b, and the left bearing portion 50b is fixed to the left bearing attachment interface 22b. The water leakage from the left bearing fitting 22b can be prevented by the water sealing function of the left sealing member 55b.

The upper outer tub member 20a to which the right bearing portion 50a is attached and the lower outer tub member 20b to which the left bearing portion 50b is attached are coupled in a spherical shape from the vertical direction. At this time, the fitting rib 26a is fitted to the fitting groove portion 26b, and the screw The insertion hole 25a matches the screw mounting hole 25c. The upper outer tub member 20a and the lower outer tub member 20b are fixed to the outer tub 20 by fixing the screw 27 inserted into the screw accommodating recess 25b through the screw insertion hole 25a to the screw mounting hole 25c. As shown in Fig. 2(b), a labyrinth seal is formed by fitting the fitting rib 26a and the fitting groove portion 26b, and the joint portion from the upper outer tub member 20a and the lower outer tub member 20b, that is, the outer tub is prevented. The split surface D of 20 leaks. It should be noted that by providing a packing between the upper outer tub member 20a and the lower outer tub member 20b, the water sealing function can be further improved. It should be noted that the left bearing portion 50b corresponds to the bearing portion of the present invention.

When the outer tub 20 is assembled, the washing and dewatering tub 30 is housed in the outer tub 20. At this time, the right dewatering tub rotating shaft 40a and the left dehydrating tub rotating shaft 40b are inserted into the right bearing portion 50a and the left bearing portion 50b, respectively, and are rotatably supported by the right bearing portion 50a and the left bearing portion 50b.

The outer side insertion opening 21 of the outer tub 20 is opened and closed by, for example, a transparent outer cover 60 formed of a resin material. The outer cover 60 is exposed to the upper side of the casing 10 through the opening portion 11. The outer cover 60 and the outer tub 20 are coupled by a hinge portion 61, and the outer cover 60 is rotated about the hinge portion 61. A latch portion 62 is provided at a position on the opposite side of the hinge portion 61 from the hinge portion 61, and the latch portion 62 is held in a state in which the outer cover 60 is closed. When a predetermined operation of opening the latch portion 62 is performed, the outer cover 60 is opened.

The washing and dewatering tub 30 is rotationally driven by the dewatering bucket motor 70. The dewatering drum motor 70 is, for example, an outer rotor type motor including a rotor 71 and a stator 72. The rotor 71 is fixed to the tip end portion of the right dewatering bucket rotating shaft 40a that protrudes outward of the outer tub 20, and the stator 72 is fixed to the rear portion of the right bearing portion 50a.

A disk-shaped shaft attachment portion 28 having a plurality of screw attachment holes 28a is formed in the center of the bottom of the outer tub 20, and a drain port 29 is formed on the side of the shaft attachment portion 28. A mounting plate 80 having a predetermined shape is fixed to the shaft attachment portion 28, and the outer tub rotating shaft 90 is fixed to the shaft mounting portion 28 via a mounting plate 80. The outer tub rotating shaft 90 is a vertical rotating shaft R1. Further, a drain device 100 for draining water from the inside of the tub 20 is fixed to the mounting plate 80. The drain device 100 includes a drain pipe 102 having a drain valve 101, and a torque motor 103 that rotates the drain valve 101. One end portion 102a of the drain pipe 102 is connected to the drain port 29, and the other end portion 102b is connected to a drain hose (not shown).

The outer tub rotating shaft 90 is rotatably supported by the outer tub bearing portion 110. The outer tub bearing portion 110 includes a bearing housing 111, an upper rolling bearing 112, and a lower rolling bearing 113, and are disposed in the bearing housing 111 at a predetermined interval in the vertical direction. The outer tub bearing portion 110 is attached to a square plate-shaped outer tub mounting plate 120 disposed at the bottom of the casing 10. The outer tub mounting plate 120 is elastically supported by the vibration isolating device 130 attached to its four corners.

The outer tub 20 is rotationally driven by the outer tub motor 140. The outer tub motor 140 is, for example, an outer rotor type motor, and includes The rotor 141 and the stator 142 are included. The rotor 141 is fixed to a distal end portion of the outer tub rotating shaft 90 that protrudes downward from the outer tub bearing portion 110, and the stator 142 is fixed to a lower portion of the outer tub bearing portion 110.

A wiring repeating portion 150 is provided above the outer tub bearing portion 110. The wiring relay unit 150 has a plurality of first electric wires 160a extending from the electric component that rotates together with the outer tub 20, such as the dehydration drum motor 70 and the torque motor 103, and a plurality of second electric wires extending from a control unit to be described later. 160b is relayed. It should be noted that the first electric wiring 160a corresponds to the first electric wiring of the present invention, and the second electric wiring 160b corresponds to the second electric wiring of the present invention.

As shown in FIG. 6, the wiring relay unit 150 includes a rotating portion 151, a fixing portion 152, a plurality of rotating terminal portions 153, a plurality of first connection wires 154, a plurality of fixed terminal portions 155, and a plurality of second connection wires 156. The contact brush 157, the upper rolling bearing 158a, and the lower rolling bearing 158b. It should be noted that the rotation terminal portion 153 corresponds to the first terminal portion of the present invention, the fixed terminal portion 155 corresponds to the second terminal portion of the present invention, and the contact brush 157 corresponds to the contact portion of the present invention.

The rotating portion 151 is formed in a cylindrical shape from an insulating material such as resin, and is fixed to the outer tub rotating shaft 90 and rotates together with the outer tub rotating shaft 90. A plurality of annular terminal grooves 151a are formed on the outer circumferential surface of the rotating portion 151 at a predetermined interval in the vertical direction. The rotation terminal portion 153 is formed in a ring shape from a conductive metal material, and is disposed in the terminal groove 151a. A wiring insertion hole 151b that is connected to the back side of each of the rotation terminal portions 153 is formed at a predetermined position of the rotating portion 151 from the upper surface toward the lower side. Each of the first connection wirings 154 inserted into the wiring insertion hole 151b is connected to each of the rotation terminal portions 153. Each of the first connection wires 154 is connected to each of the first electric wires 160a via a connector 161a. In other words, each of the rotation terminal portions 153 is electrically connected to each of the first electric wires 160a via the respective first connection wires 154.

The fixing portion 152 is formed in a cylindrical shape from an insulating material such as resin, and surrounds the outer circumference of the rotating portion 151 . The fixing portion 152 is coupled to the rotating portion 151 via the upper rolling bearing 158a and the lower rolling bearing 158b. Thereby, the rotating portion 151 is free to rotate with respect to the fixed portion 152. A mounting piece 152b having a screw insertion hole 152a is provided on the bottom surface of the fixing portion 152. As shown in FIG. 2(a), the attachment piece 152b is fixed to the upper portion of the outer tub bearing portion 110 by screws 159, whereby the fixing portion 152 is fixed to the outer tub bearing portion 110. Thereby, even if the outer tub rotating shaft 90 rotates, the fixing portion 152 does not rotate.

Each of the fixed terminal portions 155 is disposed at a predetermined interval in the vertical direction so as to face the respective rotation terminal portions 153 on the inner circumferential surface of the fixing portion 152. Each of the fixed terminal portions 155 is formed of a conductive metal material. In the fixing portion 152, a wiring insertion hole 152c that is connected to the back side of each of the fixed terminal portions 155 is formed from the lower surface toward the upper side. Each of the fixed terminal portions 155 is connected to each of the insertion wiring insertion holes 152c. The second connection wiring 156. Each of the second connection wires 156 is connected to each of the second electric wires 160b via the connector 161b. In other words, each of the fixed terminal portions 155 is electrically connected to each of the second electric wires 160b via the second connection wires 156.

Each of the contact brushes 157 is attached to the surface of each of the fixed terminal portions 155. Each of the contact brushes 157 is formed of a plurality of conductive metal wires, and its tip end portion is in contact with the corresponding rotary terminal portion 153.

When the outer tub rotating shaft 90, that is, the outer tub 20 is rotated, the rotating portion 151 rotates, and the first electric wires 160a, the first connecting wires 154, and the respective rotating terminal portions 153 rotate. Each of the contact brushes 157 slides on each of the rotating rotary terminal portions 153, thereby maintaining a state in which the respective first electric wires 160a and the second electric wires 160b are electrically connected. Since the second electric wires 160b do not move even if the outer tub rotating shaft 90 rotates, there is no case where the outer tub rotating shaft 90 or the like is wound.

FIG. 7 is a block diagram showing the configuration of the fully automatic washing machine 1 of the present embodiment.

In addition to the above configuration, the fully automatic washing machine 1 further includes a water supply device 170, an operation unit 180, a water level sensor 190, a control unit 200, and a storage unit 210.

The water supply device 170 includes a water supply pipe, a water supply valve, and the like, and supplies water into the outer tub 20.

The operation unit 180 includes an operation button for turning on and off the power of the fully automatic washing machine 1, a start button for starting the operation, a selection button for selecting an operation mode, and the like, and an operation to be operated by the user. The input signal corresponding to the button is output to the control unit 200.

The water level sensor 190 detects the water level in the outer tub 20, and outputs a water level detection signal corresponding to the detected water level to the control unit 200.

The storage unit 210 includes an EEPROM (Electrically Erasable Programmable Read-Only Memory), a RAM (Random Access Memory), and the like. A program for executing a washing operation of various operation modes is stored in the storage unit 210. Further, various parameters and various control flags for executing these programs are stored in the storage unit 210.

The control unit 200 includes a control circuit including a CPU, a drive circuit, and the like, and supplies the dehydration drum motor 70, the tub motor 140, and the water supply according to the program stored in the storage unit 210 based on the signals from the operation unit 180, the water level sensor 190, and the like. The operation of the device 170, the drain device 100, and the like is controlled.

In the fully automatic washing machine 1, the washing operation in various operation modes is performed. In the washing operation, the washing process, the intermediate dehydration process, the rinsing process, and the final dehydration process are sequentially performed.

During the washing process and the rinsing process, water is stored in the outer tub 20 to a predetermined water level L. As shown in Fig. 2(a), the specified water level L is the position where the washing and dewatering tank 30 is immersed in the water, and can be set to be smaller than the washing. The center position of the water tub 30, that is, the position where the position of the horizontal rotation axis R2 is low. It should be noted that during the washing process, the stored water contains detergent.

In a state where water is stored in the outer tub 20, the tub motor 140 is driven to rotate in one direction, the outer tub 20 is horizontally rotated horizontally about the vertical rotation axis R1, and the washing and dewatering tub 30 is horizontally rotated integrally with the outer tub 20. Further, the dehydration tub motor 70 is driven to alternately rotate in the forward direction and the reverse direction, and the movements of the washing and dewatering tub 30 and the tub 20 are alternately vertically rotated in the positive direction and the reverse direction, respectively, centering on the horizontal rotation axis R2.

The water flow is generated in the outer tub 20 by the horizontal rotation of the outer tub 20, wherein the laundry that is stirred in the washing and dewatering tub 30 performs complicated movement by horizontally rotating the washing and dewatering tub 30 and rotating vertically in the reverse direction. Thereby, the water flow generated in the outer tub 20 interacts with the complicated movement of the laundry, so that the laundry is well washed or rinsed.

Further, in the case where the washing and dewatering tub 30 is spherical, since the circumferential surface is also arcuate in the direction of the horizontal rotating shaft R2, the laundry located at both end portions in the washing and dewatering tub 30 becomes easy to be placed. Above the water surface, the laundry at both ends becomes difficult to be soaked in water. However, in the present embodiment, since the outer tub 20 is horizontally rotated, the water on the outer peripheral side gradually rises by the centrifugal force, and it becomes easy for the water to spread over the laundry at both ends.

In the intermediate dehydration process and the final dehydration process, after the drainage is performed from the inside of the outer tub 20, the washing and dewatering tub 30 is vertically rotated at a high speed in a state where the outer tub 20 is stopped. The laundry is dehydrated by the centrifugal force generated in the washing dewatering tank 30.

FIG. 8 is a flowchart showing a control process of the control unit 200 of the washing machine to the outer tub motor 140 and the dehydrating tub motor 70 in the washing operation according to the present embodiment.

In the washing process or the rinsing process, the control section 200 makes the outer tub motor 140 unidirectionally rotated based on the judgment of the washing or rinsing control (S101: YES) (S102), and reversely rotates the dehydrating tub motor 70 (S103). As described above, the outer tub 20 is rotated horizontally in one direction, and the washing and dewatering tub 30 is horizontally rotated and alternately rotated vertically in the forward direction and the reverse direction.

When the completion time of washing or rinsing is passed (S104: YES), the control unit 200 stops the operations of the tub motor 140 and the dehydration bucket motor 70 (S105).

On the other hand, in the intermediate dehydration process or the final dehydration process, the control unit 200 does not judge based on the control of the washing or rinsing, but based on the determination of the dehydration control (S101: NO), the state in which the tub motor 140 is kept stopped. Next, the dehydration drum motor 70 is rotated at a high speed in one direction (S106). Washing as mentioned above The dewatering bucket 30 is rotated vertically in one direction at a high speed.

When the completion time of the dehydration is passed (S107: YES), the control unit 200 stops the operation of the dehydration drum motor 70 (S108).

As described above, according to the present embodiment, the outer tub 20 can be horizontally rotated to generate a water flow in the outer tub 20, and the washing and dewatering tub 30 can be horizontally rotated and vertically rotated to stir the laundry in the washing and dewatering tub 30. Further, since the outer tub 20 and the washing and dewatering tub 30 are independently rotated by the outer tub motor 140 and the dehydrating tub motor 70, various rotation operations can be performed between the outer tub 20 and the washing and dewatering tub 30. For example, by rotating the washing and dewatering tub 30 in the forward and reverse directions during the one-way rotation of the outer tub 20, the movement of the laundry that is stirred in the washing and dewatering tub 30 becomes complicated, and the water flow generated in the outer tub 20 is The complex movements of the laundry interact so that the laundry is well washed, or rinsed.

As described above, according to the present embodiment, it is expected that the movement of the outer tub 20 and the spherical washing and dewatering tub 30 that utilize the water storage can be effectively utilized to improve the washing performance.

Further, according to the present embodiment, the dewatering tub motor 70 is rotated at a high speed while the outer tub motor 140 is kept stopped, and the washing and dewatering tub 30 is vertically rotated at a high speed in a state where the outer tub 20 is stopped, and is in the washing dewatering tub 30. The washing is subjected to dehydration, and therefore, the washing tub 10 is washed at a high speed by integrally rotating the tub 20 with the washing and dewatering tub 30 at a high speed by rotating the tub motor 140 at a high speed while the dehydrating tub motor 70 is kept stopped. In the case where the laundry is dehydrated, the driving load is small, and the power consumption is small.

Moreover, according to the present embodiment, the outer tub 20 is formed to cover the washing and dewatering tub 30 to a spherical shape of more than half, and therefore, the outer tub 20 can be formed compactly. Further, since the outer tub 20 is divided into the upper outer tub member 20a and the lower outer tub member 20b, the spherical outer tub 20 can be easily formed.

Moreover, according to the present embodiment, the imaginary plane including the division face D of the outer tub 20 is inclined with respect to the horizontal rotation axis R2 in such a manner as to pass through the center portion of the outer tub 20 and not touching the right bearing fitting 22a and the left bearing fitting 22b. Since it is provided, it is easy to form the right bearing fitting 22a and the left bearing fitting 22b in a high cylindricity, and the right bearing portion 50a and the left bearing portion 50b can be attached to the right bearing fitting 22a and the left with high precision, respectively. Bearing mounting interface 22b. Thereby, it is possible to prevent an offset or the like from occurring in the horizontal rotation axis R2, and the washing and dewatering tub 30 can be smoothly rotated vertically. It should be noted that the central portion of the outer tub 20 refers to a point at which the vertical rotation axis R1 intersects with the horizontal rotation axis R2.

It should be noted that the split surface D relates to the right bearing fitting 22a and the left bearing fitting 22b. In this case, the right bearing fitting 22a and the left bearing fitting 22b are separately formed on the upper outer tub member 20a and the lower outer tub member 20b, and thus, the right side is formed by the combination of the upper outer tub member 20a and the lower outer tub member 20b. When the bearing fitting 22a and the left bearing fitting 22b are provided, it is difficult to obtain a high cylindricity. Thereby, when the horizontal rotation axis R2 is displaced, it becomes impossible to smoothly rotate the washing and dewatering tub 30 vertically.

Further, according to the present embodiment, the plurality of first electric wires 160a extending from the electric component that rotates together with the outer tub 20, such as the dehydrating drum motor 70 and the torque motor 103, and the extension from the control unit 200 are passed through the wire relay unit 150. The plurality of second electric wirings 160b are relayed, and therefore, it is possible to prevent the electric wiring from being entangled in the outer tub 20 when the outer tub 20 is rotated.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications other than the above may be made in the embodiments of the present invention.

For example, in the above embodiment, the outer tub 20 is rotated about the vertical rotation axis R1, and the washing and dewatering tub 30 is rotated about the horizontal rotation axis R2. However, it is also possible to adopt a configuration in which the outer tub 20 is rotated about a rotation axis that is inclined from the vertical direction. Similarly, it is also possible to adopt a configuration in which the washing and dewatering tub 30 is rotated about a rotation axis that is inclined in the horizontal direction.

Further, in the above embodiment, the outer tub 20 is horizontally rotated in one direction during the washing process or the rinsing process. However, it is also possible to alternately horizontally rotate the outer tub 20 in the clockwise direction and the counterclockwise direction by rotating the outer tub motor 140 in the forward and reverse directions. Further, the rotation speed of the tub motor 140, that is, the tub 20 may be changed to change the speed of the water flow in the tub 20.

Further, in the above embodiment, the outer tub motor 140 and the dewatering bucket motor 70 are external rotor type motors, but they may be inner rotor type motors.

Further, in the above-described embodiment, the outer tub 20 is obliquely divided with respect to the horizontal rotation axis R2 so as to be positioned from the position above the left bearing fitting 22b toward the position below the right bearing fitting 22a. However, the outer tub 20 may be obliquely divided with respect to the horizontal rotation axis R2 so as to be positioned from the position above the right bearing fitting 22a toward the position below the left bearing fitting 22b. That is, if the split surface D passes through the center portion of the outer tub 20 and does not touch the right bearing fitting 22a and the left bearing fitting 22b, the position of the split surface D can be appropriately changed. However, in order to further prevent water leakage from the division surface D, it is preferable that the division surface D is provided above the water level L of the water stored in the outer tub 20. From this point of view, the outer tub 20 is divided into a position slightly upward from the position above the left bearing fitting 22b (right bearing fitting 22a) toward the position below the right bearing fitting 22a (left bearing fitting 22b). it is good.

Moreover, although the fully automatic washing machine 1 is exemplified in the above embodiment, the present invention can also It is suitable for fully automatic washing and drying machine with drying function in addition to washing function.

Further, the embodiments of the present invention can be variously modified as appropriate within the scope of the technical idea of the claims.

Claims

A washing machine characterized by comprising:

The outer tub is rotatably disposed in the housing centering on the first rotating shaft inclined in the vertical direction or from the vertical direction, and can store water;

a spherical washing and dewatering bucket rotatably disposed in the outer tub centered on a second rotating shaft inclined in a horizontal direction or from a horizontal direction, and accommodating the laundry;

a tub motor for rotating the tub;

a dewatering bucket motor for rotating the washing and dewatering tub;

The control unit drives the dehydration drum motor while driving the tub motor during washing.
A washing machine according to claim 1, wherein

At the time of dehydration, the control unit drives the dehydration drum motor in a state where the outer tub motor is stopped.
A washing machine according to claim 1 or 2, characterized in that

The washing and dewatering tub is provided with a dewatering bucket rotating shaft as the second rotating shaft,

The outer tub is formed to cover the washing dewatering bucket to more than half of a spherical shape,

And having a bearing fitting interface to which a bearing portion that rotatably supports the rotating shaft of the dewatering tub is attached,

The outer tub is divided into a first outer tub member and a second outer tub member, the split surface of which passes through the central portion of the outer tub and does not touch the bearing fitting.
A washing machine according to claim 3, characterized in that

The dewatering bucket rotating shaft is disposed on two sides of the washing and dewatering bucket, and the dewatering bucket rotating shaft on one side is rotated by the dewatering bucket motor.

The bearing mounting interface is disposed on two sides of the outer tub,

The outer tub is obliquely divided with respect to the second rotating shaft from a position above the bearing fitting on one side toward a position below the bearing fitting on the other side.
A washing machine according to any one of claims 1 to 4, characterized in that

a wiring relay unit that relays a first electrical wiring extending from the dewatering bucket motor and a second electrical wiring extending from the control unit,

The outer tub is provided with an outer tub rotation axis as the first rotating shaft,

The wiring relay unit includes:

a rotating portion that rotates together with the outer tub rotating shaft;

An annular first terminal portion is disposed on an outer peripheral surface of the rotating portion and electrically connected to the first electrical wiring;

The fixing portion is disposed outside the rotating portion and does not rotate together with the outer tub rotating shaft;

a second terminal portion disposed at the fixing portion and electrically connected to the second electrical wiring;

The conductive contact portion extends from the second terminal portion and is in contact with the first terminal portion, and slides on the first terminal portion when the rotating portion rotates.