JPH03141988A - Washing machine - Google Patents

Abstract

PURPOSE:To contrive the simplification of constitution and its miniaturization by supporting an assembly unit, formed of a rotary shaft, drive shaft, rotary supporter, inner tank, etc., to a subframe and this subframe to a main unit case or an outer tank. CONSTITUTION:A power transmission system is constituted of a rotary shaft 24, intermediate tank 41 fixed to an upper end of the rotary shaft, drive shaft 27 inserted into the rotary shaft 24 as well as connected to a drive motor 35, inner tank 50 rotatably supported about the horizontal axial line to the intermediate shaft 41, transmission mechanism 72 between the drive shaft 27 and the inner tank 50 and a clutch mechanism 73 between the rotary shaft 24 and the drive shaft 27 into integral centralization, and an assembly unit 74, supported to a subframe 21 by this integral centralization, is constituted with the subframe 21, in the lower of an outer tank 15, supported to a main unit case 1 swivelably in vertical and horizontal directions through four bumper fitting 20. Vertical movement of rotary shaft 24 is absorbed by a bellows plate 13, and a seal ring 12 is prevented from vertical movement. A water-sealed bellows 11 is constituted of the seal ring 12 and the bellows plate 13.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a washing machine that can perform a laundry washing operation.

[Prior Art] Recently, the inventors of this application have devised a 7Wm dewatering system as described below. This dehydrating washing machine has an outer tank that can store water inside the main body of the cage, and a support that can be rotated around a vertical axis is provided inside the outer tank. The inner tank for accommodating the tank is rotatably supported around a horizontal @ line.

and washing the laundry by rotating the inner tub around the horizontal axis while supplying water to the outer tub so that the water level reaches the inside of the inner tub containing the laundry; Further, the laundry is dehydrated by rotating the support body and the ribs from which the water in the outer tub has been discharged together with the inner tub at high speed around the vertical axis.

[Problems to be Solved by the Invention] In the above-mentioned washing machine, the outer tub is movably supported by the main body case via the Mlli device, and the support body, the inner tub, and the top for rotating them are also supported. Supported by an outer tank. Therefore, if a seal is provided between the outer tank and the main case to prevent water or moisture from entering the outer tank, or if a drain pipe or other pipe is connected to the outer tank, it is necessary to It was necessary to install a bellows in the middle of the tube so that it could follow the movement. For this reason, the number of parts increases and the structure becomes complicated. Moreover, space is required to install the seals, etc., and since the outer tank is suspended inside the main body case so as to be able to swing, the amount of swing is required. In anticipation of this, the space inside the main body case was increased, which led to the overall size of the washing machine.

An object of the present invention is to solve the above-mentioned problems and provide a washing machine that can be simplified in structure and reduced in size.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a hollow tube that vertically passes through an opening formed at the bottom of the outer tank and is rotatable around a vertical axis. a rotating shaft; a rotating support fixed to the upper end of the rotating shaft and rotatable in an outer tank integrally with the rotating shaft; and a rotating support rotatably fitted into a hollow portion of the rotating shaft; A drive shaft driven by a motor connected to the lower end portion, a drive shaft rotatably supported inside the rotary support body around a horizontal axis or an inclined axis tilted with respect to the horizontal axis, and a plurality of shafts on the peripheral wall. An inner tub is provided with a small hole and can accommodate laundry inside, and is provided between the inner tub and the drive shaft, and is provided between the inner tub and the drive shaft to decelerate the rotation of the drive shaft and align the inner tub with a horizontal axis or an inclined axis. A transmission mechanism is provided between the drive shaft and the rotating shaft, and the state in which only the inner tank is rotated at a low speed by allowing only the rotation of the drive shaft, and the state in which the inner tank is rotated at a low speed, and the two shafts are connected. and a clutch machine ellipse that rotates the rotating support and the inner tank integrally around a vertical axis at the same speed and in the same direction at high speed, forming an integrated assembly, and forming the assembly. The rotating ring is supported by a subframe disposed below the bottom of the outer tank, and the space between the rotating ring and the mouth edge of the opening of the outer tank is sealed by a water seal bellow of a water seal structure, and further , the subframes are divided into several wLIIi
The device is attached to the outer tank or main body case via a tool.

[Function 1 Therefore, in this invention, an assembly consisting of a rotating shaft, a driving shaft, a rotating support, an inner tank, etc. is supported on a subframe,
Since the subframe is supported on the main body case or the outer tank, the outer tank itself or the outer tank can be fixedly supported on the main body case, and the seal between the main body case and the outer tank and various pipes connected to the outer tank can be fixed. This eliminates the need for intermediate bellows, etc., which reduces the number of parts and simplifies the structure.In addition to the fixed outer tank, the rotating support inside the outer tank and the inner tank can be easily swung or moved up and down. It is sufficient to set the size of the outer tub by taking only this into consideration, so it is possible to downsize the entire washing machine.

[Example] Hereinafter, an example of a dehydrating/drying washing machine embodying the present invention will be described in detail based on the drawings.

(Related lateral drawing of main body case) Main body case 1 that is placed directly on the floor or placed on the floor
It is formed into an almost box shape using a company iron plate, and a main body cover 2 having an opening 3 for putting in and taking out laundry is attached to the top of the main body cover 2.The main body opening/closing lid 4 is connected to the main body cover by a support shaft 5 at the rear end. It is attached to the opening 3 of 2 so that it can be rotated to open and close,
A gasket 6 is attached to the lower surface of the lid to prevent hot air, moisture, or noise from leaking outside when the lid is closed. The locking member 7 is provided at the front inside the main body cover 2, and is engaged with the main body opening/closing lid 4 in the closed position.
4 in the closed position.

An outer tank 15 for storing washing water is fixed within the main body case 1 and is formed of synthetic resin into a substantially cylindrical shape with a bottom. The outer tank cover 16 is attached to the upper part of the outer tank 15, and an opening 17 facing the opening 3 of the main body cover 2 is formed in the front part of the outer tank cover 16. The lower end of the opening 3 of the main body cover 2 is tightly fixed to the inner peripheral edge of the opening 17 of the outer tank cover 16 in an airtight manner.

(Related configuration of aggregate) The subframe 21 is supported by the main body case l below the outer tank 15 so as to be able to swing vertically and horizontally via four Mlil stationery, and there are upper and lower hollow shafts. 22
．． A rotating shaft 24 consisting of 23 is rotatably supported around a vertical axis Y-Y via a pair of upper and lower ball bearings 25, and the rotation @ 24 moves upward and downward through an opening 26 formed at the center of the bottom of the outer tank 15. It penetrates through and protrudes into the outer tank 15.

The drive @27 is rotatably inserted and fitted into the hollow part of the rotating shaft 24, and a clutch joint 28 and a pulley 2 are attached to the lower end of the drive @27.
9 is fixed. The spring clutch 30 is provided between the clutch joint 28 and the rotating shaft 24, and when the clutch pawl 31 is disengaged from the clutch housing 32, the rotating shaft 24 and the drive shaft 27 are connected via the spring clutch 30, and the clutch When the pawl 31 is engaged with the clutch housing 32, the connection between the rotating shaft 24 and the drive 27 is interrupted. This clutch joint 28, spring clutch 30,
The clutch pawl 31 and the clutch housing 32 constitute a clutch mechanism 73.

The brake drum 33 is provided between the upper and lower hollows @22°23, and the brake body 34 is attached to this brake drum 33.
By joining, the rotation of the rotating shaft 24 is controlled.

A driving motor 35 capable of forward and reverse rotation is connected to the subframe 2.
A pulley 36 equipped with a motor cooling fan 37 is fixed to the motor shaft, and a belt 38 is hung between the pulley 36 and the pulley 29 for driving. Rotation of the motor 35 is transmitted to the drive shaft 27.

When the rotating shaft 24 and the driving shaft 27 are connected by the spring clutch 30, M! IJ motor 35
Due to this rotation, the rotating shaft 24 and the driving shaft 27 are rotated at high speed in the same direction and at the same speed. Further, when the spring clutch 30 is in the disconnected state, only the drive shaft 27 is allowed to rotate.4 A seal ring 12 is mounted on the rotating shaft 24 at the upper part of the upper ball bearing 25, and the seal ring 12 and the outer tank are connected to each other. A bellows plate 13 is interposed between the rotating shaft 24 and the edge of the opening 26, and a water seal is maintained between the rotary shaft 24 and the edge of the opening 26. In this case, the vertical movement of the rotating shaft 24 is absorbed by the bellows plate 13, and the seal ring 12 is not moved vertically.
and the bellows plate 13 constitute a water seal bellows 11.

An inner tank 41 serving as a rotating support is disposed within the outer tank 15, and the inner tank 41 is formed of synthetic resin into a cylindrical shape with a bottom that is almost similar to the outer tank 15, and an annular balancer is provided at the upper end of the inner tank 41. 42 is attached. The center of the bottom of the inner tank 41 is formed by a reinforcing support plate 43 made of iron plate, the lower surface of which is fixed to the upper end of the rotating shaft 24, and the inner tank 41 is supported on the rotating shaft 24. A large number of small holes 44 are formed through the peripheral wall and bottom wall of the inner tank 41 and the support plate 43 at predetermined intervals, and a pair of lees receiving parts 45 are
They are formed approximately in the middle of the peripheral wall of the inner tank 41 so as to face each other from front to back (right and left in FIG. 1) on the horizontal axis XX.

An inner tub 50 for storing laundry therein is made of synthetic resin and has a substantially spherical shape, and a cylindrical shaft portion 51 is formed protruding from both front and rear outer surfaces of the inner tub 50. and,
By fitting both shaft parts 51 into the lees receiving part 45 of the middle 11'i41, the inner tank 50 is rotatably supported within the middle 4w41 around the horizontal axis XX.

A mesh plate 52, which will be described later, allows the passage of warm air and prevents the laundry from flying out, and is attached to the inner recess of the inner tub 50 in close proximity to both shaft portions 51.

A pair of laundry reversing protrusions 53 are arranged along the horizontal axis X-X.
Inward so that it extends almost parallel to the! They are formed at predetermined intervals on the inner peripheral surface of @50. A large number of small holes 54 are formed in the inner tank 5.
They are transparently installed on the peripheral wall of 0 at predetermined intervals. The entrance 55 for putting in and taking out laundry is the opening 3 of the main body cover 2
and is formed on the peripheral wall of the inner tank 50 so as to face the opening 17 of the outer tank cover 16.

The lid body 56 is integrally formed of synthetic resin and has a cover portion 56a and a pair of support leg portions 56b.
A large number of small holes 57 are formed in a. A pair of shaft parts 5
Reference numeral 8 is formed protrudingly at the tips of both support leg parts 56b, and by engaging both shaft parts 58 with bearing parts 59 of the inner tank 50, the lid body 56 is rotated to open and close inside the entrance/exit 55 of the inner tank 50. installed as possible. The protrusion 60 for reversing laundry is attached to the lid 5
On the inner surface of the cover portion 56a of No. 6, the horizontal axis! It is formed to extend substantially parallel to IX and -X, and is arranged to face the other protrusion 53 of the inner 41150 at a predetermined distance. is formed. The locking member 62 is rotatably supported within the mounting recess 61, and is always secured to the entrance/exit 55 by a spring 63.
This engagement locks and holds the lid 56 in the closed position. In this embodiment, the cover portion 56a of the lid body 56 is formed to be larger than the opening area of the entrance/exit 55 of the inner tank 50.

At the side of the entrance/exit 55: 1. A driven gear 64 is integrally provided on the outer periphery of the inner tank 50.

The synthetic resin gear cover 65 is the middle one! ! A transmission shaft 67 extending in the horizontal direction is disposed on the support plate 43 at the inner bottom of the support plate 43 through a gasket 66.
8, and a hypoid gear I wheel 69 is fixed within the gear cover 65 at one end thereof. The upper end of the drive shaft 27 protrudes into the gear cover 65, and a pinion 70 that meshes with the six hypoid gears is fixed to the end thereof.

A WIA dynamic gear 71 is fixed to the other end of the transmission shaft 67 and meshes with a driven gear 64 on the outer periphery of the inner tank 50 below. A transmission mechanism 72 is constituted by these gears 71.degree. 64, pinion 70, hypoid gear 69, etc., and this transmission mechanism 72 decelerates the rotation of the drive shaft 27 and transmits it to the inner tank 50.

During washing, rinsing, and drying, the spring clutch 30 is in the disconnected state and the brake body 34 is in the disconnected state.
is in a braking state, and as mentioned above, the sliding part movement motor 35
The rotation of the pulley 36, belt 38.1-reel 29, drive shaft 27, pinion 70° hypoid gear 69, transmission shaft 67
, inner 1'150 via the driving gear 71 and the driven gear 64
The inner tub 50 is rotated around the horizontal axis X--X at a reduced speed, and the laundry in the inner tub 50 is agitated for washing, rinsing or drying.

In addition, during dewatering, the spring clutch 30 is in a connected state and the brake #34 is in a non-braking state, and the rotation of the sliding part driving motor 35 is 1-1, 36, and 38, 7-.
IJ29. It is transmitted to the Il moving shaft 27 and is also transmitted to the inner tank 41 through the spring clutch 30 and the rotating shaft 24 as rotation at the same speed and in the same direction, so that the inner tank 41 and the inner tank 50 are integrally rotated along the vertical axis Y- Rotates around Y at high speed.

Therefore, the rotating wheel 24, the inner tank 41 fixed to the upper end thereof, the drive shaft 27 inserted into the rotating shaft 24 and connected to the drive motor 35, and the inner tank 41 around the horizontal axis. the transmission mechanism 72 between the drive shaft 27 and the inner tank 50;
4 and the clutch 111 lateral 73 between the drive shaft 27 and the clutch 111 constitute a power transmission system and are integrated together, and this assembly and integration constitutes an assembly 74 supported by the subframe 21.

(Water Supply, Drainage, and Overflow Structure) The water supply device 81 is disposed inside the main body cover 2 and includes a water supply valve (not shown) and a water supply pipe 82 opened near the outer circumferential upper surface of the inner tank 50. There is. During water supply and rinsing, the water supply pipe 8 is opened by opening the water supply valve.
Water is supplied from 2 to the upper surface of the outer circumference of the inner tank 50.

A drain port 84 is provided at the bottom of the outer tank 15, and a drain valve 8
5 to a drain hose 86. and,
In this embodiment, the drain valve 85 is opened and closed in conjunction with the clutch pawl 31 of the spring clutch 30 and the brake body 34, and when the spring clutch 30 is in the disconnected state and the brake body 34 is in the braking state, such as during washing, When the drain valve 85 is closed and the brake body 34 is in a non-braking state with the spring clutch 30 in a connected state during dewatering or the like,
Drain valve 85 is opened.

The overflow hose 87 is connected to an overflow port (not shown) provided on the side wall of the outer tank 15 that also serves as a hot air exhaust port, and is connected to the drain hose 86 at its lower end. When water is supplied into the outer tank 15 by the water supply device 81,
The normal water level Wn at rest is set at a position corresponding to the overflow port, as shown by the chain line in FIG. Expansion cooling room 8
8 is provided in the middle of the overflow hose 87, and the expansion cooling chamber 88, the drain hose 86, and the overflow hose 87 are connected to the overflow hose 87 from the overflow port and the exhaust port 83 (described later) during drying.
Cools and dehumidifies the hot and humid air discharged through the

(Power of the hot air supply device) A hot air generation source 95 constituting the hot air supply device 94 as a heating means is connected to the case body 1 and the body cover above the outer tank 15, the inner tank 41, and the inner tank 50. 2, and has a fan motor 96, a fan 97, and a heating heater 98.

Hot air supply device! The warm air supply pipe 99 of f94 is connected to the m air supply passage 1 integrally formed on the rear surface of the outer tank 15 and the outer tank cover 16.
Connected to 00. The air outlet 101 is formed on the rear wall of the exterior structure 15 at the lower end of the hot air supply passage 100 so as to be close to and face the shaft portion 51 which also serves as the air outlet described above, and is used to blow hot air when drying laundry. Warm air supplied from the supply device 94 is introduced into the inner tank 30 from the air outlet 101 through the bearing portion 45 and the shaft portion 51 .

The exhaust port 83 is formed in the front wall of the outer tank 15 so as to face the air outlet 101 and be close to the shaft portion 51 which also serves as an exhaust port. A tube 102 is provided. Then, the warm air introduced into the inner tank 50 passes through the small holes 54 and 57 of the inner tank 50 and the shaft portion 5.
1 and is discharged from the exhaust port 83 to the overflow hose 87. Note that an outer tank 15 is provided at the exhaust port 83 and the exhaust pipe 102.
A foam cutting net 103 is provided to prevent detergent foam from coming out.

(Overview of Operation) Next, an overview of the operation of the dehydrating/drying washing machine configured as described above will be described.

First, after putting the laundry into the inner tub 50 with the main body opening/closing 114 and the inner tub lid 56 open, the inner tub storage 56 and the main body opening/closing 114 are closed and a start switch (not shown) is operated. A series of operations are automatically performed in sequence under the control of a control device (not shown). That is, a Water supply operation by the water supply device 81 b Washing operation based on the rotation of the inner tank 50 C Drainage operation by opening the drain valve 85 d Dewatering operation based on the rotation of the inner tank 41 e Water supply operation by the water supply device 81 f According to the water supply device 81 Rinsing operation based on water supply and rotation of the inner tank 50 (g) Drainage operation by opening the drain valve 85 (h) Inner tank 41
(i) A drying operation based on the rotation of the inner tank 30 and the supply of warm air by the hot air supply device 94.

(Details of Operation) Next, each of the above-mentioned operations (a) to (i) will be explained in detail.

Now, as mentioned above, when washing is carried out with the main body opening/closing 114 and the storage body 56 both closed and the laundry stored in the inner tub 50 in advance, the drain valve is automatically opened when a switch (not shown) is operated. 85 is closed, the spring clutch 30 is in the disconnected state, and the brake body 34 is in the braking state to restrict the rotation of the inner tank 41. In this state, the water supply valve of the water supply device W, 81 is opened, and water is supplied into the outer tank 15 from the water supply pipe 82. When the water level in the outer tank 15 reaches the inside of the inner tank 50 and reaches the normal water level Wn, a water level detection device (not shown) is operated, the lateral movement motor 35 is rotated, and the inner tank 50 is aligned with the horizontal axis. It is rotated around X-X and the washing operation begins.

During this washing operation, the spherical inner tub 5 containing the laundry
0 is rotated around the horizontal axis XX, and as the laundry is rotated, the laundry is transferred by a plurality of reversing protrusions 53, 60, etc., and so-called beating washing is performed.

Further, when rinsing is performed after washing the laundry, the inner tub 50 is moved by the lateral movement motor 35 as in the case of washing.
is rotated. Furthermore, by opening the water supply valve of the water supply device W81, water is supplied from the water supply pipe 82 toward the outer circumferential upper surface of the inner tank 50, and the rinsing water in the outer tank 15 is discharged through the overflow port and the overflow hose 87. The water level is kept constant. Therefore, while the rinsing water is replaced in sequence, the water from the water supply pipe 82 effectively washes away the foam adhering to the outer peripheral surface of the inner tub 50 and the laundry inside the inner tub 50. .

Further, when the laundry is dehydrated after washing or rinsing, the spring clutch 30 is brought into a connected state, and the brake body 34 is brought into a non-braking state.
rotation is allowed. In this state, the lateral movement motor 35
When the inner tub 41 is rotated, the inner tub 41 and the inner tub 50 are rotated at high speed around the vertical axis YY, thereby dewatering the laundry.

When the laundry is dried after being dehydrated, the inner tub 50 is rotated around the horizontal axis ax-x by the lateral movement motor 35, and the fan motor 96 is By energizing the heating heater 98, hot air is generated from the hot air generation source 95 of the hot air supply device 94, and the hot air is passed through the hot air supply pipe 99, the hot air supply passage 1OO1, and the air outlet 1.
It is supplied into the inner tank 50 through the 01 and - side shaft parts 51 and discharged from the respective small holes 54 and 57 and the shaft part 51.

Therefore, it is possible to effectively dry the laundry by applying hot air to the laundry while rolling the laundry.

During this drying operation, the hot and humid air in the inner tank 50 is transferred to the exhaust port 83 provided in the outer tank 15 and the exhaust pipe 1.
02, is led into an expansion cooling chamber 88 via an overflow hose 87, is cooled and dehumidified in the overflow hose 87, expansion cooling chamber 88, etc., and is then discharged to the outside through a drainage hose 86.

Now, in the washing machine of this embodiment, the outer tub 15 is fixed to the main body gauge 1, and the inner tub 41, the inner tub 50, and the mechanism for rotating them are integrated into an assembly 7.
4 is constructed, and the subframe 21 supporting the assembly 74 is cushioned and supported by the main body case 1, so that the outer tank does not move relative to the main body case 1, and these 15.1
There is no need for a seal in between. Similarly, since the outer tank 15 does not move, there is no need to provide bellows or the like in the middle of the hot air supply passage 100, exhaust pipe 102, etc. connected to the air outlet 101 and exhaust port 83 of the outer tank 15. For this reason, the number of parts is reduced, the structure is simplified, and the installation space for bellows and the like and the swinging space for the outer tank are no longer necessary, so that the overall size can be reduced. Moreover, since there is no need to provide bellows in the hot air supply passage 100, etc., the passage 100, etc. can be provided integrally with the outer tank 15, and the structure can be further simplified.

Note that the present invention is not limited to the above-mentioned example 811, and may include omitting the main body case and placing the outer tank 15 directly on the floor, or supporting the subframe on the outer tank via a buffer. , the #I precept can be arbitrarily modified and embodied without departing from the gist of the invention, such as by supporting the inner tank around an inclined axis that is inclined at a predetermined angle with respect to the horizontal axis.

[Effect of the invention] Since this invention is configured as explained above,
Since the assembly consisting of the rotating shaft, drive shaft, rotating support, inner tank, etc. is supported on the subframe, and the subframe is supported on the main body case or the outer tank, the outer tank itself or the outer tank can be attached to the main body case. It can be fixedly supported, and there is no need for a seal between the main body case and the outer tank or bellows in the middle of various pipes connected to the outer tank, so the number of parts can be reduced and compaction can be simplified. Apart from the fixed outer tank, it is sufficient to set the size of the outer tank by considering only the swinging and vertical movement of the rotating support inside the outer tank and the inner tank, so the overall size of the washer can be reduced. This has the effect of making it possible.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of a dehydrating/drying washing machine embodying the present invention, and FIG. 2 is a front sectional view thereof. 1... Main body case, 11... Water seal bellows 15...
・Outer tank, 20...Buffer, 21...Subframe,
24...Rotating shaft, 26...Opening, 27...Drive shaft, 35...Drive motor, 41...Inner tank, 50...
Inner tank, 54... Small hole, 57... Small hole, 72... Transmission Il oval, 73... Clutch mechanism, 74... Assembly.

Claims (1)

[Claims] 1. A washing machine that is placed directly on the floor or fixed to a main body case (1) that is placed on the floor, and that has an outer tank (15) for storing washing water inside. , a hollow rotating shaft (24) that vertically passes through an opening (26) formed at the bottom of the outer tank (15) and is rotatable around a vertical axis, and an upper end of the rotating shaft (24). a rotary support (41) fixed to the rotary shaft (24) and rotatable in the outer tank integrally with the rotary shaft (24); A drive shaft (27) driven by a motor (35) connected to the lower end portion
is rotatably supported by the rotary support (41) inside thereof around a horizontal axis or an inclined axis tilted with respect to the horizontal axis, and has a large number of small holes (54, 5) in its peripheral wall.
7) is provided transparently and is provided between the inner tank (50) and the drive shaft (27) and can accommodate laundry therein, and the drive shaft (27) rotates. A transmission mechanism (72) is provided between the drive shaft (27) and the rotation shaft (24), and a transmission mechanism (72) that decelerates and transmits the rotation to the inner tank (50) as rotation around a horizontal axis or an inclined axis; A state where only the shaft (27) is allowed to rotate and only the inner tank (50) is rotated at a low speed, and both shafts (24, 27) are connected to each other so that the rotating support (41) and the inner tank (50) are vertically rotated. An assembly (7) that is assembled and integrated by a clutch mechanism (73) that rotates around the axis at the same speed and in the same direction at high speed.
4), and the rotating shaft (24) constituting the assembly (74),
A sub-frame (2) disposed below the bottom of the outer tank (15).
1), and its rotating shaft (24) and outer tank (1)
5) and the mouth edge of the opening (26) is sealed by a water seal bellows (11) having a water seal structure, and furthermore, the subframe (21) is sealed with several shock absorbers (20
) A washing machine characterized in that the washing machine is attached to the outer tub (15) or the main body case (1) via the outer tub (15) or the main body case (1).