JP2000197794A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing machine allowing switchable operation between a washing tub and a water stop valve in a simple and inexpensive structure. SOLUTION: This washing machine includes a lever member 29a to be moved to a preset direction for cancelling the braking of a washing tub, a driving motor M for moving the lever member 29a, a water stop valve 64 to be moved for opening/closing a drain passage 65 and a connection member 62 to be curved during braking the washing tank for connecting the lever member 29a to the water stop valve 64 and to be fastened when the lever member 29a is moved a distance to a preset direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine, and more particularly to a washing machine capable of performing washing with a washing tub in a braking state and a non-braking state.

[0002]

2. Description of the Related Art In a conventional washing machine, washing conditions can be switched according to the type of laundry or the like. Japanese Patent Application Laid-Open No. 9-140993 discloses a first condition in which a washing and dewatering tub is fixed and a stirring blade is rotated (rubbing and washing).
There is disclosed a washing machine having a second condition (soft washing) in which a washing / dewatering tub is rotatable and a stirring blade is rotated.

In this washing machine, a switching mechanism 60 as shown in FIG. 10 is used to switch a braking mechanism, and to switch a water stop valve for draining at the time of dehydration or the like. The driven angle 46 integrated with the valve shaft 63 of the water shutoff valve 38 has a flange portion 46a at an end and a guide hole 46b which is long in the axial direction in a peripheral wall. A guide hole 46 is provided in the drive angle 44 fitted to the driven angle 46.
One end has a protrusion 44a that can move inside b, and a wire 48 that moves as indicated by an arrow E by being driven by a drive motor (not shown) is attached to the other end. The pin 26a for driving the braking mechanism is connected to the drive angle 4
4 is fixed.

[0004] At the time of scrubbing, the projection 44a is in the position of A,
That is, the washing and dewatering tub (not shown) is braked at the right end of the guide hole 46b in the drawing, and the water stop valve 38 is closed. At the time of soft washing, the projection 4
4a is disposed at the position B, that is, at the left end of the guide hole 46b in the drawing, the braking of the washing and dewatering tub is released, and the water stop valve 38 is kept closed.

At the time of dehydration or drainage, the drive motor is further driven, so that the protrusion 44a
6a and moves together with the valve shaft 63 to form the projection 44a.
Is arranged at the position of C. Then, while the braking of the washing and dewatering tub is released, the water stop valve 38 is opened and drainage is performed.

[0006]

However, according to such a switching mechanism 60, since the shapes of the drive angle 44 and the driven angle 46 are complicated, there is a problem that the manufacturing cost is increased. An object of the present invention is to provide a washing machine capable of switching between a washing tub and a water stop valve with a simple and inexpensive configuration.

[0007]

According to one aspect of the present invention, there is provided a lever member for releasing braking of a washing tub by movement in a predetermined direction, and a drive motor for moving the lever member. A water stop valve that moves to open and close the drainage passage, and the lever member and the water stop valve are curved and connected when the washing tub is braked, and the lever member moves by a predetermined amount in the predetermined direction. And a connecting member that is tensed. According to this configuration, the lever member moves by driving the motor from the braking state of the washing tub, and the braking of the washing tub is released. When the lever member is further moved, the connection member is tensioned while the braking of the washing tub is released, the water stop valve is moved, and the drainage channel is opened.

According to a second aspect of the present invention, in the washing machine according to the first aspect, a first fixing portion for fixing a driven portion of the drive motor and a second fixing portion for fixing an end of the connecting member. A connecting plate having two fixing portions and a locking portion for locking the lever member is provided. According to this configuration, the follower portion of the motor moves by driving the motor from the braking state of the washing tub, the lever member moves via the connecting plate, and the braking of the washing tub is released. When the lever member is further moved, the connection member is tensioned via the connection plate while the braking of the washing tub is released, the water stop valve is moved, and the drainage channel is opened.

According to a third aspect of the present invention, in the washing machine according to the first aspect, the connecting member is directly connected to the drive motor, and the engaging member fixed to the connecting member is disengaged. Thus, the lever member can be moved. According to this configuration, when the motor is driven from the braking state of the washing tub, the connecting member is tensioned between the lever member and the drive motor, and the engaging member fixed to the connecting member is engaged with the lever member. As a result, the lever member moves, and the braking of the washing tub is released. When the motor is further driven, the connection member is tensioned between the lever member and the water stop valve while the braking of the washing tub is released, and the water stop valve is moved to open the drainage channel.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view showing a washing machine according to the first embodiment. The washing machine of the present embodiment is a fully automatic washing machine, and includes a bottomed cylindrical water tub 4 swingably suspended via a hanging rod 2 and a vibration absorbing spring 3 inside a box-shaped outer tub 1. ing.
The water tank 4 has a bottomed cylindrical washing and dewatering tank 5 therein, and a balancer 6 is attached to the upper end thereof. An outer lid 7 for opening and closing an opening (not shown) for taking in and out laundry is attached to the upper surface of the outer tub 1. Reference numeral 8 denotes a control circuit for controlling the washing machine.

A drive mechanism 9 for driving the washing / dewatering tub 5 and the stirring blade 50 is attached to the bottom of the water tub 4. As shown in FIG. 2, the drive mechanism 9 is attached to the outer bottom of the water tank 4 and includes a support member 10 including an upper support member 11 and a lower support member 12 disposed below the upper support member 11. The upper support member 11 is fixed to a boss 4 a erected on the outer bottom of the water tank 4 by screws 13, and the lower support member 12 is fixed to the upper support member 11 by screws 16.

A hollow tub shaft 17 integrated with the washing and dewatering tub 5 penetrates through the upper support member 11 and the lower support member 12. The tank shaft 17 includes a hollow cylindrical upper tank shaft 18 and a hollow cylindrical lower tank shaft 19 coaxially connected to a lower end thereof.
And consists of The upper tub shaft 18 protrudes into the tub 4 through a through hole 4b formed in the bottom of the tub 4, and a flange portion 18a formed at the upper end thereof is fixed to the bottom of the washing and dewatering tub 5 with a screw 20. Have been.

On the outer peripheral surface of the lower tank shaft 19, bearings 21 and 21 are mounted on the upper and lower sides.
Is rotatably supported. An oil seal 22 for maintaining watertightness is mounted on the outer peripheral surface of the upper tank shaft 18. The upper tank shaft 18 and the lower tank shaft 19
May be formed integrally.

A stirring shaft 23 is coaxially mounted on the tank shaft 17. The stirring shaft 23 is rotatably held by the tub shaft 17, and its upper end projects into the washing and dewatering tub 5. At the upper end of the stirring shaft 23, a stirring blade 50 arranged at the bottom of the washing and dewatering tub 5 is fixed by a screw 51.

A clutch boss 33 is fixed to a lower end of the stirring shaft 17, and a clutch boss 33 and the tank shaft 17 are connected to the clutch boss 33 so that the clutch boss 33 can be disengaged therefrom, and a cylinder for transmitting a rotational force therebetween. A movable body 34 is provided. Moving object 34
A plurality of vertically extending teeth (not shown) are formed on the inner surface of the tank shaft, and a plurality of vertically extending teeth slidably engaged with these teeth are formed on outer peripheral surfaces of the tank shaft 17 and the clutch boss 33. The teeth (not shown) are formed, and the moving body 34 is guided vertically by these.

The clutch spring 35 urges the moving body 34 upward to hold it at the upper end position, and the lower end is supported by the receiving member 36. The electromagnetic solenoid unit 37 is fixed to the lower support member 12 by screws 37a,
When the electromagnetic solenoid unit 37 is energized, the moving body 34
Move downward against the urging force of the clutch spring 35.

When the moving body 34 moves to the upper end position (the position in FIG. 2), the moving body 34 engages with both the clutch boss 33 and the tank shaft 17 to connect them. Thereby, the washing and dewatering tub 5 and the stirring blade 50 can rotate integrally. On the other hand, when the moving body 34 moves to the lower end position, the moving body 3
Reference numeral 4 denotes a state in which it is detached from the tank shaft 17 and is engaged only with the clutch boss 33.

An annular rotor 38 is provided at the lower end of the stirring shaft 23.
Is fixed by screws 41, and the rotor frame 39 and the stirring shaft 23 rotate integrally. The stator 46 is fixed to the lower support member 12 by screws 47, surrounds the rotor 38, and forms an annular air gap with the rotor 38. The rotor 38 and the stator 46 constitute a motor that drives the stirring shaft 23.

A brake lever 29 is held on the outer peripheral surface of the brake wheel 27 fixed to the tank shaft 17 by screws 28. The inner surface of the brake lever 29 is subjected to processing such as fixing a brake shoe (not shown) in order to increase the friction coefficient. Then, as shown in FIG. 3, one end of the brake lever 29 is connected to the support member 10 (FIG. 2).
Reference), and is supported by a support shaft 30 standing upright so as to be rotatable in the horizontal direction. A lever portion 29a (lever member) is formed at the other end of the brake lever 29, and the brake lever 29 is urged counterclockwise by a spring (not shown).

The lever 29a is adapted to engage with an L-shaped engaging portion 61a provided on the connecting plate 61 as shown in FIG. Wire 75 directly connected to motor M
The (follower) moves linearly by driving the motor M, and the engaging member 75 a fixed to the end is engaged with the engaging hole 61 b of the connecting plate 61.

A drain valve 60 is provided in the middle of a drain passage 65 through which drain water flows from the water tank 4 (see FIG. 1) as shown by an arrow D, and a stop valve is provided in the drain valve 60 to bias the drain passage 65 in the closing direction. A water valve 64 is provided. Then, by pulling the valve shaft 63 integrated with the water stop valve 64, the drainage channel 6
5 is to be opened. A fixing portion 62b provided at one end of a connecting member 62 made of a wire is fixed to the tip of the valve shaft 63. An engaging member 62a fixed to the other end of the connecting member 62 is engaged with an engaging hole 61c of the connecting plate 61 (see FIG. 6). As shown in FIG. 7, the connecting member 62 may be fixed to the connecting plate 61 by welding or the like.

When the washing and dewatering tub 5 is fixed and the washing is performed (rubbing), as shown in FIG. 3, the brake lever 29 is pressed against the brake drum 27 by the urging force of the spring and the brake drum 27 is pressed. The rotation of 27 is being braked.
At this time, the connecting member 62 has a length to be loosened,
The drain valve 60 is closed.

When the washing and dewatering tub 5 is released and the washing is performed (soft washing), the motor M is driven and the connecting plate 61 is pulled by the wire 75. Then, FIG.
As shown in FIG.
a (see FIG. 6), and the brake lever 29 rotates clockwise. As a result, the brake lever 29 separates from the brake drum 27, and the braking of the brake drum 27 and the washing and spin-drying tub 5 is released. At this time, the connecting member 62
Is still loose.

At the time of spin-drying, the washing and spin-drying tub 5 is rotated to simultaneously drain water, so that the motor M is further driven and the connecting plate 61 is pulled by the wire 75. Then, FIG.
In the state where the braking of the brake drum 27 is released, the connecting member 62 is tensioned to pull the valve shaft 63 as shown in FIG. As a result, the water stop valve 64 moves against the urging force and the drain valve 6
0 is opened (60a), and the washing liquid is drained as indicated by arrow D '. When the rotation of the stirring blade 50 (see FIG. 1) and the washing and dewatering tub 5 is stopped and the washing liquid is drained, the washing can be executed in this state.

As described above, since the connecting member 62 for connecting the lever portion 29a integral with the brake lever 29 and the valve shaft 63 integral with the water stop valve 64 is formed by a bendable wire, the lever portion 29a The water stop valve 64 is moved and the drain valve 60 can be opened only when has moved a predetermined amount or more.

Therefore, the first state such as rubbing in which the washing and spin-drying tub 5 is braked and the drain valve 60 is closed, and the soft state in which the brake of the washing and spin-drying tub 5 is released and the drain valve 60 is closed. A second state, such as washing, and a third state, such as dehydration, in which braking of the washing and dewatering tub 5 is released and the drain valve 60 is opened.
Can be realized with a simple configuration, and cost reduction can be achieved. The connecting member 62 is not limited to a wire, but may be a string, a rope, an elastically deformable wire, a plate, or the like.

FIG. 8 is a partial schematic view of a washing machine according to a second embodiment. The other parts have the same configuration as the first embodiment of FIGS. 1 to 5, and the same members as those of the first embodiment are denoted by the same reference numerals. A brake lever 29 rotatably supported in the horizontal direction by a support shaft 30 on the outer peripheral surface of the brake wheel 27 has a lever portion 29.
a (lever member) is formed, and the brake lever 2
9 is urged in a counterclockwise direction by a spring (not shown).

As shown in FIG. 9, the lever 29a is provided with an engaging member 6 fixed to a connecting member 62 directly connected to the motor M.
It has a locking portion 29b that can be engaged with 2a. The connecting member 62 is configured to perform a linear movement by driving the motor M. A drain valve 60 is provided in the middle of the drain passage 65 through which drain water flows from the water tank 4 (see FIG. 1) as shown by an arrow D, and a water stop valve 64 urged in the direction to close the drain passage 65 therein. Is provided. The drainage channel 65 is opened by pulling the valve shaft 63 integrated with the water stop valve 64. A fixed portion 62b provided at an end of the connecting member 62 is fixed to the tip of the valve shaft 63.

When the washing and dewatering tub 5 is fixed to perform washing (rubbing), the brake lever 29 is pressed against the brake drum 27 by the biasing force of the spring, and the rotation of the brake drum 27 is braked. I have. At this time, the connecting member 6
Numeral 2 has a slack length, and the drain valve 60 is closed.

When the washing and dewatering tub 5 is released and the washing is performed (soft washing), the motor M is driven to pull the connecting member 62. Then, similarly to FIG. 4 described above, the engaging member 62a engages with the locking portion 29b of the lever portion 29a, and the brake lever 29 rotates clockwise. As a result, the brake lever 29 separates from the brake drum 27, and the braking of the brake drum 27 and the washing and spin-drying tub 5 is released. At this time, the connecting member 62 is still loose between the engaging member 62a and the fixing portion 62b.

At the time of spin-drying, the washing and spin-drying tub 5 is rotated to simultaneously drain water, so that the motor M is further driven to pull the connecting member 62. Then, in the state where the braking of the brake drum 27 is released as in FIG.
The connecting member 62 is tensioned between 2a and the fixed portion 62b to pull the valve shaft 63. As a result, the water stop valve 64 moves against the urging force, the drain valve 60 is opened (60a), and the arrow D '
As shown in FIG. 5, the washing liquid is drained. When the rotation of the stirring blade 50 (see FIG. 1) and the washing and dewatering tub 5 is stopped and the washing liquid is drained, it can be executed in this state.

As described above, the connecting member 62 for connecting the lever portion 29a integral with the brake lever 29 and the valve shaft 63 integral with the water stop valve 64 is formed by a wire that is directly connected to the motor M and can be bent. The lever part 29a
The water stop valve 64 is moved and the drain valve 60 can be opened only when has moved a predetermined amount or more. Therefore, the same effect as that of the first embodiment can be obtained, and the number of parts can be further reduced. Note that a string, a rope, an elastically deformable wire, a plate, or the like can be used for the connecting member 62 instead of the wire as in the first embodiment.

[0033]

According to the first aspect of the present invention, since the lever member (lever member) for operating the brake lever and the connecting member for connecting the water shutoff valve are formed by a bendable member, the lever portion is formed. The water stop valve is moved only when the water has moved by a predetermined amount or more to open the drainage channel. Therefore, the first state in which the washing and dewatering tub is braked and the drainage channel is closed, the second state in which the braking and dewatering tub of the washing and dehydration tub is released and the drainage channel is closed, Is released and the third state such as at the time of dehydration where the drainage channel is opened can be realized with a simple configuration, and cost can be reduced.

According to the second aspect of the present invention, the lever portion and the connecting member can be easily connected, and only when the lever portion moves a predetermined amount or more, the water stop valve is moved to open the drain passage. A simple washing machine can be realized.

According to the third aspect of the present invention, since the connecting member for connecting the lever portion and the water shutoff valve is formed by a member which is directly connected to the motor and can be bent, the washing and dewatering tub is braked and the drainage channel is drained. And a second state in which the drain of the washing and dewatering tub is released and the drainage channel is closed.
The third state, such as the dewatering state in which the drain of the washing and dewatering tub is released and the drainage channel is opened, can be realized with a simple configuration by further reducing the number of parts, thereby further reducing costs. Can be.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a washing machine according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing a driving mechanism of the washing machine according to the first embodiment of the present invention.

FIG. 3 is a schematic diagram illustrating a first state of a braking mechanism of the washing machine according to the first embodiment of the present invention.

FIG. 4 is a schematic diagram showing a second state of the braking mechanism of the washing machine according to the first embodiment of the present invention.

FIG. 5 is a schematic diagram showing a third state of the braking mechanism of the washing machine according to the first embodiment of the present invention.

FIG. 6 is a partial detailed view of a braking mechanism of the washing machine according to the first embodiment of the present invention.

FIG. 7 is a schematic view showing another connecting plate of the washing machine according to the first embodiment of the present invention.

FIG. 8 is a schematic diagram illustrating a first state of a braking mechanism of a washing machine according to a second embodiment of the present invention.

FIG. 9 is a partial detailed view of a braking mechanism of a washing machine according to a second embodiment of the present invention.

FIG. 10 is a partial detailed view of a braking mechanism of a conventional washing machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer tub 2 Hanging rod 3 Vibration absorption spring 4 Water tub 5 Washing and dewatering tub 9 Driving mechanism 17 Tank shaft 23 Stirring shaft 27 Brake wheel 29 Brake lever 30 Support shaft 38 Rotor 46 Stator 50 Stirrer blade 60 Drain valve 61 Connection plate 62 Connection Member 63 Valve shaft 64 Water stop valve 65 Drainage channel 75 Wire M Motor

Claims (3)

[Claims] 1. A lever member for releasing braking of a washing tub by movement in a predetermined direction, a drive motor for moving the lever member, a water stop valve for moving to open and close a drain passage, A washing member comprising: a connecting member that bends and connects the water valve when the washing tub is braked and that is tightened when the lever member moves by a predetermined amount in the predetermined direction. 2. A first device for fixing a driven portion of the drive motor.
The washing machine according to claim 1, further comprising a connecting plate having a fixing portion, a second fixing portion for fixing an end of the connecting member, and a locking portion for locking the lever member. . 3. The device according to claim 1, wherein the connecting member is directly connected to the drive motor, and the lever member is movable by engaging and disengaging an engaging member fixed to the connecting member. Washing machine.