JPH0824476A - Washing machine combinedly used as spin dryer - Google Patents

Abstract

PURPOSE:To prevent the splashing of water in the mounting part of a pulley as much as possible. CONSTITUTION:A driving pulley 16 is mounted on the rotating shaft 15 of a motor 11 mounted on the outer bottom part of a water tank by fastening a fixing screw 27 from the outside in the radial direction of the rotating shaft 15 in the state where a fitting cylindrical part 24 is fitted to the rotating shaft 15. A cap for enclosing the fixing screw 27 and the fitting cylindrical part 24 is mounted on the driving pulley 16. Since the fixing screw 27 part is enclosed by the cap 30, the splashing of water can be prevented as much as possible even when the driving pulley 16 is rotated in the state where the fixing screw 27 part is exposed to water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine for combined use of dehydration, in which a pulley for transmitting rotation is attached to a rotating shaft of a motor attached to an outer bottom portion of a water tub by attaching screws.

[0002]

2. Description of the Related Art In a washing machine for combined use of dehydration,
A motor is attached to the outer bottom of the water tank arranged in the outer box, a drive mechanism is provided, a belt transmission mechanism is provided between the motor and the drive mechanism, and the rotational force of the motor is transmitted via the belt transmission mechanism. It is configured to transmit to the drive mechanism side.

However, the motor is mounted so that its rotary shaft faces downward, and a pulley on which the V-belt is hooked is mounted at the lower end of the rotary shaft. In this case, in the pulley, the fitting tubular portion formed on the pulley is fitted to the rotary shaft, and the mounting screw screwed into the screw hole formed on the peripheral wall of the fitting tubular portion is attached to the rotary shaft in the radial direction. It is attached to the rotating shaft by tightening it from the outside. In the attached state of the pulley, the head of the attachment screw is in a state of protruding laterally from the fitting tubular portion.

On the other hand, in a washing machine, a waterproof pan is provided as an optional component, and the washing machine can be installed and used on this waterproof pan. In this case, the waterproof pan functions so that the dew condensation water that is generated and drip on the outer surface of the water tank inside the washing machine does not drop directly onto the floor surface of the house.
It has a drainage port, and the drainage hose of the washing machine can be inserted into this drainage port for drainage.

[0005]

By the way, in recent years, it has been considered to reduce the height of the main body of the washing machine in this type of dehydrating and washing machine in consideration of taking in and out of the laundry. In this case, if the height of the main body of the washing machine is reduced, the position of the water tank is also lowered, and accordingly, the height of the attachment portion of the pulley may be lower than the upper end of the waterproof pan.

[0006] In addition, the drainage from the drain of the waterproof pan,
Abnormalities such as clogging of indoor drainage pipes may occur. In this case, the water remaining without being completely drained is accumulated in the waterproof pan, and when it gradually raises the water level, the water level reaches the attachment part of the pulley, and the pulley is rotated in that state, There is a risk that water will be splashed off by the mounting screws with the pulleys attached to the motor and other electrical components, and the electrical insulation will deteriorate.

Therefore, an object of the present invention is to provide a washing machine for combined use of dehydration, which can prevent water from being splashed at the attachment portion of the pulley as much as possible and prevent deterioration of electrical insulation of electrical equipment as much as possible. .

[0008]

In order to achieve the above object, the present invention has a motor attached to the outer bottom of a water tank disposed in an outer box, and a rotary shaft projecting downward from the motor. In the spin-drying washing machine having a structure in which a pulley for rotation transmission is mounted by a mounting screw that is tightened from the outside in the radial direction of the rotating shaft, a cap that surrounds the mounting screw portion is provided. It is a thing.

In this case, the cap preferably has an engaging claw that engages with the mounting screw. Also,
The cap may be attached by the engaging claw and a cap attaching screw fastened to the pulley on the opposite side of the engaging claw with respect to the rotary shaft.
Further, the cap may be formed with a recess for accommodating the head of the cap mounting screw.

On the other hand, for the same purpose, instead of the cap, an annular rib surrounding the mounting screw portion and having a notch at a portion corresponding to the head of the mounting screw is integrally formed on the pulley. In addition to the provision, a closing member that closes the notch may be provided.

[0011]

According to the above-mentioned means, since the mounting screw portion for mounting the pulley is surrounded by the cap, the water is splashed even if the pulley is rotated while the mounting screw portion is exposed to water. Can be prevented as much as possible.

In the structure in which the cap is provided with the engaging claw that engages with the mounting screw, the cap can be temporarily fixed by engaging the engaging claw with the mounting screw. This makes it easier to work when attaching to the pulley.

Further, in the structure in which the cap is attached by the engaging claw and the cap attaching screw fastened to the pulley on the opposite side of the engaging claw with respect to the rotary claw, the cap is attached. ,
There is an advantage that only one screwing point is required, and moreover, since the mounting screw and the cap mounting screw are located on both sides of the rotary shaft, the weight is well balanced.

In the case where the cap is formed with a recess for accommodating the head of the cap mounting screw, the head of the cap mounting screw can be prevented from protruding outward from the cap, so that water splash by the cap mounting screw can be minimized. Can be prevented.

On the other hand, instead of the cap, the water splashes even if the pulley is provided with an endless annular rib having a notch by integral molding and a closing member for closing the notch is provided. It can be prevented from being skipped as much as possible.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. First, FIG. 2 shows a state in which the dehydrating and washing machine 2 is installed on the waterproof pan 1 having a container shape. In FIG. 2, the outer box 3 of the washing machine 2 for combined use of dehydration has an opening 4 at the bottom, and the opening 4 communicates with the inside of the waterproof pan 1. At the bottom of the outer box 2,
A base plate 6 having legs 5 is provided.

Inside the outer box 3, a water tank 7 is disposed so as to be supported by an elastic suspension mechanism 8. A rotating tank 9 is arranged inside the water tank 7, and an agitator 10 is arranged at the bottom of the rotating tank 9.

At the outer bottom of the water tank 7, the motor 11
Is attached by a screw 13 via a motor base 12, and a drive mechanism portion 14 is provided. The motor 11 is mounted so that its rotary shaft 15 faces downward, and the drive pulley 16 is attached to the lower end of the rotary shaft 15.
Is attached as will be described later, a driven pulley 17 is attached to the drive mechanism portion 14 side, and a V belt 18 is stretched between the drive pulley 16 and the driven pulley 17. These drive pulley 16
The driven pulley 17 and the V-belt 18 form a belt transmission mechanism 19, and the rotational force of the motor 11 is transmitted to the drive mechanism portion 14 side. As shown in FIG. 3, the motor base 12 is fixed to a flange portion of the motor 11 with a plurality of bolts 21 via washers 20.

The drive pulley 16 is made of, for example, aluminum, and as shown in FIGS.
The belt hooking portion 22 on which 8 is hooked, a plurality of blade pieces 23 for cooling the motor, the fitting cylinder portion 24 provided in the central portion, and the boss provided in a portion eccentric to the one side from the central portion. The mounting portion including the portion 25 and the fitting tubular portion 24 fitted to the rotary shaft 15 of the motor 11 is screwed into the screw hole 26 formed in the peripheral wall of the fitting tubular portion 24. The screw 27 is attached to the rotary shaft 15 by tightening the screw 27 and pressing the tip of the mounting screw 27 against the slope of the hole 28 formed in the rotary shaft 15 from the outside in the radial direction of the rotary shaft 15.

A nut 29 for preventing loosening is screwed onto the mounting screw 27 and is located outside the fitting cylindrical portion 24.
The head portion 27a of the mounting screw 27 projects from the fitting tubular portion 24 to the side opposite to the boss portion 25 (left side in FIG. 1).

A cap 30 is attached to the drive pulley 16 so as to cover the attachment screw 27. The cap 30 is made of plastic, for example, and has an annular wall 30a surrounding the mounting screw 27 and the mounting screw 27.
It has a container shape that integrally has a bottom wall 30b that covers the portion from below. In addition, the bottom wall 30 of the cap 30
A pair of elastic engaging claws 31 (see FIG. 4) located on the mounting screw 27 side is formed in a, and a recess 33 having a screw insertion hole 32 located on the boss portion 25 side is formed.
Are formed.

Thus, the cap 30 has the fitting tubular portion 2
4 and the boss portion 25 are covered from below, the pair of engaging claws 31 are engaged with the outer peripheral portion of the mounting screw 27 (see FIG. 4), and the cap mounting screw 34 inserted through the screw insertion hole 32 is attached to the boss portion. It is attached to the lower surface of the drive pulley 15 by being screwed into the attachment hole 25 a of the drive pulley 25. With the cap 30 attached to the drive pulley 16 as described above, the cap attaching screw 34 is located on the opposite side of the engaging claw 31 and the attaching screw 27 with the rotary shaft 15 interposed therebetween, and The head portion 34a is accommodated in the recess 33.

Here, in consideration of the easiness of taking in and out of the laundry, the combined height of the dehydrating and washing machine 2 is set lower than the conventional height, and as a result, as shown in FIG. The mounting screw 27 portion for mounting the drive pulley 15 is set to have substantially the same height as the upper end 1a of the waterproof pan 1.

On the other hand, FIG. 5 shows a part of the internal structure of the drive mechanism section 14. In FIG. 5, although not shown, a reduction device and a brake mechanism are provided in the case 35. A drive shaft 36 projects downward from the lower portion of the case 35, and the drive shaft 3
The driven pulley 17 is connected to the lower end of the drive pulley 6. A connecting shaft 37 is provided on an outer peripheral portion of a lower portion of the drive shaft 36 so as to rotate integrally with the drive shaft 36.
A hollow shaft 38 connected to the rotary tank 9 is provided above. The hollow shaft 38 is rotatably supported by a bearing 40 provided in a bearing holding portion 39 provided at the bottom of the case 35.

A clutch mechanism 41 is provided on the outer peripheral portions of the connecting shaft 37 and the hollow shaft 38. This clutch mechanism 41
Includes a clutch spring 42, a clutch sleeve 43 that accommodates the clutch spring 42, and a clutch lever 44. As is well known, the clutch mechanism 41 cuts off the rotation transmission force between the hollow shaft 38 and the connecting shaft 37 that rotates integrally with the drive shaft 36 at the time of washing or rinsing, so that the rotation of the drive shaft 36 is transmitted via a speed reducer. And stirrer 10
The stirring body 10 is driven by decelerating and transmitting it to the stirring shaft 10. On the other hand, at the time of dehydration, the connecting shaft 37 and the hollow shaft 38 are connected to each other, and the driving shaft 36 and the hollow shaft 38 are integrally rotated to stir The body 10 and the rotary tank 9 are integrally rotated at high speed.

Below the bearing 40, the rotary tank 9
A one-way clutch 45 is provided as a reverse rotation prevention device. The one-way clutch 45 has a housing 46 whose upper portion is held by the bearing holding portion 39 and is prevented from coming off by the bearing 40, and an outer ring 47 which is press-fitted into the housing 46 to prevent rotation. This outer ring 4
7 and a plurality of rollers 48 arranged between the hollow shaft 38
The hollow shaft 38, that is, the rotary tank 9 is allowed to rotate in the rotation direction during dehydration, and is prevented from rotating in the direction opposite to the rotation direction during dehydration.

In this case, an enclosing wall portion 43a that partially overlaps the housing 46 is integrally provided on the upper portion of the clutch sleeve 43, and the enclosing wall portion 43a covers the lower portion of the housing 46 from the outside. .

In the first embodiment described above, if the water level in the waterproof pan 1 rises due to abnormal drainage, water is applied to the mounting screw 27 for mounting the drive pulley 16 (see water level A in FIG. 2). Even if the drive pulley 16 is rotated in this state, the mounting screw 27 is surrounded by the cap 30, so that splashing of water can be prevented as much as possible. Therefore, while suppressing the overall height, it is possible to prevent deterioration of electrical insulation of electric components such as the motor 11 existing around the drive pulley 16 as much as possible.

Further, the cap 30 is provided with a pair of engaging claws 31 for engaging the mounting screws 27, and the engaging claws 3 are provided.
1 by engaging the mounting screw 27 with the cap 3
Since 0 can be temporarily fixed, the work for attaching the cap 30 to the drive pulley 16 becomes easy.

Further, the cap 30 has the engaging claws 31.
And the cap mounting screw 34 fastened to the boss portion 25 on the opposite side of the engaging claw 31 with respect to the rotary shaft 15, the cap 30 is attached at one screwing point. There is an advantage. Moreover, since the mounting screw 27 and the cap mounting screw 34 are located on both sides of the rotary shaft 15, the weight balance is improved.

Since the cap 30 is formed with the recess 33 for accommodating the head portion 34a of the cap mounting screw 34, the head portion 34a of the cap mounting screw 34 can be prevented from protruding outward from the cap 30. The water splash due to the cap mounting screw 34 can be prevented as much as possible.

Further, according to the above-described first embodiment, the surrounding wall portion 43a that partially overlaps the housing 46 is integrally provided on the upper portion of the clutch sleeve 43, and the lower portion of the housing 46 is covered by this surrounding wall portion 43a. Since it is covered from the outside, it is possible to prevent dust and dirt from entering the one-way clutch 45 as much as possible. As a result, it is possible to prevent dust, dirt, and the like from entering the one-way clutch 45, which may cause an abnormal noise or a failure, and to improve reliability.

FIG. 6 shows a second embodiment of the present invention, which is different from the first embodiment described above in the following points.
However, the same parts as those in the first embodiment are designated by the same reference numerals. That is, the drive pulley 50 attached to the rotary shaft 15 of the motor 11 has the rotary shaft 1 at the center.
5 is provided with a fitting tubular portion 51 to be fitted,
End-shaped annular ribs 52 are integrally formed on the lower surface so as to surround the fitting cylinder portion 51. A notch 53 is formed in the rib 52 at a portion corresponding to the head 27a of the attachment screw 27 for attaching the drive pulley 50 to the rotary shaft 15.

As in the case of the first embodiment, however, the drive pulley 50 has a screw formed on the peripheral wall of the fitting tubular portion 51 with the fitting tubular portion 51 fitted to the rotary shaft 15. It is mounted on the rotary shaft 15 by tightening a mounting screw 27 screwed into a hole (not shown). With the drive pulley 50 attached to the rotary shaft 15 in this manner, a sheet 54 having an adhesive (not shown) applied to one side thereof is attached to the rib 52 as a closing member for closing the notch 53. , The notch 53 is closed.

Even in such a second embodiment, tentatively,
The water level in the waterproof pan 1 rises due to an abnormal drainage, and water is applied to the mounting screw 27 portion for mounting the drive pulley 50. Even if the drive pulley 50 is rotated in this state, the mounting screw 27 portion has rib 52 and sheet. Since it is surrounded by 54, splashing of water can be prevented as much as possible, and deterioration of electrical insulation of electric components such as the motor 11 can be prevented as much as possible.

Further, according to the second embodiment, the cap 30 and the cap mounting screw 34, which are required in the first embodiment, are not required, and the seat 54 is only required as a separate component. There are few advantages and the structure is simple.

The present invention is not limited to the above-mentioned respective embodiments, and for example, the drive pulleys 16 and 50 may not have the blade pieces 23 for cooling the motor integrally. It can be appropriately modified and implemented within a range not departing from the gist.

[0038]

According to the combined washing and dehydration machine of the first aspect, since the mounting screw portion for mounting the pulley is surrounded by the cap, it is assumed that the pulley is rotated while the mounting screw portion is exposed to water. However, it is possible to prevent water from being splashed out as much as possible, and thus it is possible to prevent deterioration of the electrical insulation of the electrical components as much as possible.

According to the dehydrating and washing machine of claim 2,
By engaging the engaging claw provided on the cap with the mounting screw, the cap can be temporarily fixed, which facilitates the work for mounting the cap on the pulley.

According to the washing machine with combined dehydration of claim 3,
When attaching the cap, there is an advantage that only one screwing point is required, and since the attaching screw and the cap attaching screw are located on both sides of the rotary shaft, there is an advantage that the weight is well balanced. .

According to the washing machine for combined dehydration of claim 4,
Since it is possible to prevent the head of the cap mounting screw from protruding outward from the cap, water splash due to the cap mounting screw can be prevented as much as possible.

According to the washing machine for combined dehydration of claim 5,
Since the mounting screw is surrounded by the rib integrally formed with the pulley and the closing member, it is possible to prevent water from being splashed as much as possible, as in the first aspect.

[Brief description of drawings]

FIG. 1 is a cutaway side view of essential parts showing a first embodiment of the present invention.

[Fig. 2] A side view of a cut-away view of a dehydration washing machine installed on a waterproof pan

FIG. 3 is an exploded perspective view of a main part

FIG. 4 is an enlarged cross-sectional view of a portion taken along line XX in FIG.

FIG. 5 is a cutaway side view of a drive mechanism portion.

FIG. 6 is a perspective view of a drive pulley portion showing a second embodiment of the present invention.

[Explanation of symbols]

1 is a waterproof pan, 2 is a washing machine for both dehydration, 3 is an outer box, 7 is a water tank, 11 is a motor, 15 is a rotary shaft, 16 is a drive pulley (pulley), 24 is a fitting cylinder part, 27 is a mounting screw, Two
7a is a head, 30 is a cap, 30a is an annular wall, 31 is an engaging claw, 33 is a recess, 34 is a cap mounting screw, 34
a is a head part, 50 is a drive pulley, 51 is a fitting cylinder part, 52
Is a rib, 53 is a notch, and 54 is a sheet (closing member).

Claims (5)

[Claims] 1. A motor is attached to an outer bottom portion of a water tank arranged in an outer box, and a rotation transmission pulley is fastened to a rotation shaft projecting downward from the motor from a radially outer side of the rotation shaft. A combined dehydration and washing machine configured to be attached with the attached screw, wherein a cap surrounding the attachment screw portion is provided. 2. The washing machine for combined use of dehydration according to claim 1, wherein the cap has an engaging claw that engages with a mounting screw. 3. The cap is attached by an engaging claw and a cap mounting screw fastened to a pulley on the side opposite to the engaging claw with the rotary shaft interposed therebetween. Washing machine for combined use of dehydration. 4. The washing machine for combined use of dehydration according to claim 3, wherein the cap has a recess for accommodating the head of the cap mounting screw. 5. A motor is attached to an outer bottom portion of a water tank arranged in an outer box, and a rotation transmission pulley is fastened to a rotary shaft projecting downward from the motor from a radially outer side of the rotary shaft. In the washing machine for combined use of dehydration and the attachment screw, the pulley includes an annular rib that surrounds the attachment screw portion and has a notch at a portion corresponding to the head of the attachment screw. A washing machine for combined use of dehydration, which is provided by integral molding and is provided with a closing member for closing the cutout portion.