US20060243002A1 - Contracting spinner for clothes washer - Google Patents
Contracting spinner for clothes washer Download PDFInfo
- Publication number
- US20060243002A1 US20060243002A1 US11/117,044 US11704405A US2006243002A1 US 20060243002 A1 US20060243002 A1 US 20060243002A1 US 11704405 A US11704405 A US 11704405A US 2006243002 A1 US2006243002 A1 US 2006243002A1
- Authority
- US
- United States
- Prior art keywords
- washing machine
- segments
- drum
- wall segments
- sidewall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/02—Rotary receptacles, e.g. drums
- D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
- D06F35/005—Methods for washing, rinsing or spin-drying
- D06F35/007—Methods for washing, rinsing or spin-drying for spin-drying only
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/02—Rotary receptacles, e.g. drums
- D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
- D06F37/08—Partitions
Definitions
- Top loading and front loading washing machines typically have a rotatable drum for holding the clothes to be washed.
- the drum has a fixed perimeter defined by the sidewall of the drum.
- the machine normally goes into a spin cycle to extract water from the clothes.
- the drum rotates at relatively high rpms so as to extract water by centrifugal force.
- An unbalanced condition of the clothes in the drums causes undesirable vibrations of the washing machine.
- the larger the diameter of the drum the more accentuated the vibrations become.
- Various mechanisms are provided in the prior art-to overcome or reduce the vibrations, including dampers, balance rings, and the like.
- a primary objective of the present invention is the provision of a washing machine having a drum which can be expanded for the wash and rinse cycles and contracted for the spin cycle to minimize the effect of unbalanced conditions in the drum.
- Another objective of the present invention is the provision of a washing machine having a drum with an adjustable sidewall to reduce the diameter of the drum for the spin cycle.
- Still another objective of the present invention is the provision of a washing machine having a rotatable drum with a sidewall comprised of pivotal wall segments to alter the diameter of the drum.
- Another objective of the present invention is the provision of a method of washing laundry in a washing machine including the steps of expanding the diameter of the drum for the wash and rinse cycles and contracting the diameter of the drum for the spin cycle.
- a further objective of the present invention is the provision of a clothes washing method comprising simultaneously and equally pivoting wall segments of the drum sidewall to reduce the drum diameter for the spin cycle of the machine.
- Yet another objective of the present invention is the provision of a washing machine having a contracting drum to minimize vibrations from unbalanced conditions during the spin cycle.
- the washing machine of the present invention includes a rotatable drum for holding the clothes or articles to be washed.
- the drum includes first and second end walls, and a plurality of wall segments connected to the end walls so as to define a continuous sidewall extending 360°.
- the wall segments are moveable between expanded and contracted positions such that the diameter of the sidewall is variable.
- the wall segments include first ends pivotally connected to the end walls and second ends which are moveable inwardly and outwardly relative to the axis of rotation of the drum.
- the inner ends of the wall segments are pivoted inwardly by a rotating shaft and a linkage assembly so as to contract the drum diameter for the spin cycle, thereby minimizing the vibration effects of an unbalanced load condition in the drum.
- the laundry washing method of the present invention involves the steps of moving the sidewall segments of the drum to an expanded position for the wash and rinse cycles of the machine, and moving the wall segments to a contracted position for a spin cycle of the machine. Adjacent wall segments are maintained in contact with one another in both the expanded and contracted positions. The wall segments are moved simultaneously and equally during expansion and contraction. Movement of the wall sections is controlled by a linkage assembly and actuated by a rotatable shaft.
- FIG. 1 is a front elevation schematic view of a washing machine of the present invention with a contractible inner drum in an expanded position.
- FIG. 2 is a side elevation view of the inner drum in the expanded position, but without the linkage assembly for clarity.
- FIG. 3 is a front elevation view of the drum in a contracted position.
- FIG. 4 is a side elevation view of the inner drum in a contracted position, but without the linkage assembly for clarity.
- FIG. 5 is a rear view of the inner drum showing the linkage assembly for controlling movement of the drum sidewall segments in the expanded position.
- FIG. 6 is a view similar to FIG. 5 showing the linkage assembly with the sidewall segments in the contracted position.
- a clothes washing machine 10 includes an outer drum 12 and a rotatable inner drum 14 .
- the outer drum 12 is conventional.
- the machine 10 is shown to be a front loading machine, though it is understood that the present invention can also be directed towards a top loading machine.
- the inner drum 14 has an adjustable diameter which can be expanded and contracted during operation of the washing machine 10 . More particularly, the inner drum includes a front end wall 16 and a rear end wall 18 . The front end wall 16 has an opening 17 to provide access into the drum 14 .
- the sidewall of the inner drum 14 is defined by a plurality of wall segments or flaps 20 A-D, each of which have an outer end 22 and an inner end 24 .
- the outer ends 22 of the segments 20 A-D are pivotally connected to the end walls 16 , 18 , such that the segments 20 A-D are pivotal about the pivot points 28 A-D.
- the sidewall segments 20 are moveable between an expanded position for the wash and rinse cycles of the washing machine 10 , as seen in FIG.
- Adjacent segments 20 engage one another in both the expanded and contracted positions.
- the inner drum 14 has a substantially cylindrical shape in both the expanded and contracted positions.
- Movement of the segments 20 between the expanded and contracted positions is controlled by a linkage assembly, as seen in FIGS. 5 and 6 .
- the outer end 22 of each wall segment 20 A-D is fixed to a pivot pin 28 A-D extending through the front and rear end walls 16 , 18 .
- a pivot plate 30 A-D is fixed on each pivot pin 28 A-D, respectively.
- Each plate 30 A-D includes opposite connection points 32 A-D and 34 A-D.
- the first connection point 32 A-D of each plate is pivotally connected to the second connection point 34 A-D on an adjacent plate by a straight arm or bar 36 .
- the first connection point 32 A of plate 30 A is connected to the second connection point 34 B of the plate 30 B by one of the arms 36 .
- the first connection point 32 B of plate 30 B is connected to the second connection point 34 C of plate 30 C by another connection arm 36 .
- the arms 36 tie the plates 38 A-D together such that the plates 38 A-D, and thereby the wall segments 20 A-D, move simultaneously.
- two of the arms extend beneath the plates 30 A-D, and the other two arms extend above the plates 30 A-D, such that the arms 36 do not interfere with one another.
- the linkage assembly also includes an actuation shaft 38 rotatably mounted in a bearing on the rear wall 18 .
- the shaft 38 has a bar 42 fixed thereto extending opposite directions from the shaft 38 .
- a pair of arms 44 are pivotally connected to the opposite ends of the bar 42 and the second connection points 34 A and 34 C of the plates 30 A, 30 C.
- the arms 44 are shown to be L-shaped in FIGS. 5 and 6 , but may take other configurations.
- the shaft 38 is rotated in opposite directions by a reversible motor (not shown).
- the motor is operatively connected to the controls of the washing machine 10 such that the shaft 38 is rotated in a first direction to move the wall segments 20 A-D to the contracted position, via the linkage assembly, just prior to the spin cycle.
- the motor rotates the shaft 38 in the opposite direction so as to move the wall segments 20 A-D to the expanded position.
- the wall segments 20 A-D may be moved between the expanded and contracted positions using other means, without departing from the scope of the present invention.
- the segments 20 A-D could each have separate drive motors which would move the wall segments 20 A-D between the expanded and contracted positions, either simultaneously or sequentially.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
Abstract
The washing machine is provided with an inner rotatable drum which can be expanded for the wash and rinse cycles of the machine and contracted for the spin cycle of the machine. The drum includes front and rear end walls, and a plurality of wall segments connected to the end walls so as to define the side wall of the drum. The movement of the sidewall segments is controlled by a linkage assembly and a shaft actuated with a motor. By contracting the sidewall of the rotatable drum during the high speed spin cycle, unbalanced loads are eliminated or minimized.
Description
- Top loading and front loading washing machines typically have a rotatable drum for holding the clothes to be washed. The drum has a fixed perimeter defined by the sidewall of the drum. After the wash and rinse cycles are complete, the machine normally goes into a spin cycle to extract water from the clothes. During the spin cycle, the drum rotates at relatively high rpms so as to extract water by centrifugal force. An unbalanced condition of the clothes in the drums, causes undesirable vibrations of the washing machine. The larger the diameter of the drum, the more accentuated the vibrations become. Various mechanisms are provided in the prior art-to overcome or reduce the vibrations, including dampers, balance rings, and the like.
- Accordingly, a primary objective of the present invention is the provision of a washing machine having a drum which can be expanded for the wash and rinse cycles and contracted for the spin cycle to minimize the effect of unbalanced conditions in the drum.
- Another objective of the present invention is the provision of a washing machine having a drum with an adjustable sidewall to reduce the diameter of the drum for the spin cycle.
- Still another objective of the present invention is the provision of a washing machine having a rotatable drum with a sidewall comprised of pivotal wall segments to alter the diameter of the drum.
- Another objective of the present invention is the provision of a method of washing laundry in a washing machine including the steps of expanding the diameter of the drum for the wash and rinse cycles and contracting the diameter of the drum for the spin cycle.
- A further objective of the present invention is the provision of a clothes washing method comprising simultaneously and equally pivoting wall segments of the drum sidewall to reduce the drum diameter for the spin cycle of the machine.
- Yet another objective of the present invention is the provision of a washing machine having a contracting drum to minimize vibrations from unbalanced conditions during the spin cycle.
- These and other objectives will become apparent from the following description of the invention.
- The washing machine of the present invention includes a rotatable drum for holding the clothes or articles to be washed. The drum includes first and second end walls, and a plurality of wall segments connected to the end walls so as to define a continuous sidewall extending 360°. The wall segments are moveable between expanded and contracted positions such that the diameter of the sidewall is variable. The wall segments include first ends pivotally connected to the end walls and second ends which are moveable inwardly and outwardly relative to the axis of rotation of the drum. The inner ends of the wall segments are pivoted inwardly by a rotating shaft and a linkage assembly so as to contract the drum diameter for the spin cycle, thereby minimizing the vibration effects of an unbalanced load condition in the drum.
- The laundry washing method of the present invention involves the steps of moving the sidewall segments of the drum to an expanded position for the wash and rinse cycles of the machine, and moving the wall segments to a contracted position for a spin cycle of the machine. Adjacent wall segments are maintained in contact with one another in both the expanded and contracted positions. The wall segments are moved simultaneously and equally during expansion and contraction. Movement of the wall sections is controlled by a linkage assembly and actuated by a rotatable shaft.
-
FIG. 1 is a front elevation schematic view of a washing machine of the present invention with a contractible inner drum in an expanded position. -
FIG. 2 is a side elevation view of the inner drum in the expanded position, but without the linkage assembly for clarity. -
FIG. 3 is a front elevation view of the drum in a contracted position. -
FIG. 4 is a side elevation view of the inner drum in a contracted position, but without the linkage assembly for clarity. -
FIG. 5 is a rear view of the inner drum showing the linkage assembly for controlling movement of the drum sidewall segments in the expanded position. -
FIG. 6 is a view similar toFIG. 5 showing the linkage assembly with the sidewall segments in the contracted position. - A clothes washing machine 10 includes an
outer drum 12 and a rotatableinner drum 14. Theouter drum 12 is conventional. As shown inFIGS. 1-4 , the machine 10 is shown to be a front loading machine, though it is understood that the present invention can also be directed towards a top loading machine. - The
inner drum 14 has an adjustable diameter which can be expanded and contracted during operation of the washing machine 10. More particularly, the inner drum includes afront end wall 16 and arear end wall 18. Thefront end wall 16 has an opening 17 to provide access into thedrum 14. The sidewall of theinner drum 14 is defined by a plurality of wall segments orflaps 20A-D, each of which have anouter end 22 and aninner end 24. Theouter ends 22 of thesegments 20A-D are pivotally connected to theend walls segments 20A-D are pivotal about thepivot points 28A-D. Thus, the sidewall segments 20 are moveable between an expanded position for the wash and rinse cycles of the washing machine 10, as seen inFIG. 1 , and a contracted position for the spin cycle of the washing machine 10, as seen inFIG. 3 . By collapsing or contracting thesidewall segments 20A-D prior to the spin cycle of the machine 10, the load in theinner drum 14 will be moved closer to therotational axis 25 of thedrum 14 so as to eliminate or minimize the effect of an unbalanced load. Theend walls drum 14 during the spin cycle. By eliminating and minimizing unbalanced loads, higher spin speed can be achieved with the washing machine 10 of the present invention, as compared to machines wherein the inner drum or spinner has a fixed diameter. Due to the centering of the load, high water extraction performance can be consistently achieved. This extraction performance can result in lower energy usage and faster drying times in subsequent processing in a clothes dryer. - Adjacent segments 20 engage one another in both the expanded and contracted positions. The
inner drum 14 has a substantially cylindrical shape in both the expanded and contracted positions. - Movement of the segments 20 between the expanded and contracted positions is controlled by a linkage assembly, as seen in
FIGS. 5 and 6 . Theouter end 22 of eachwall segment 20A-D is fixed to apivot pin 28A-D extending through the front andrear end walls pivot plate 30A-D is fixed on eachpivot pin 28A-D, respectively. Eachplate 30A-D includesopposite connection points 32A-D and 34A-D. Thefirst connection point 32A-D of each plate is pivotally connected to thesecond connection point 34A-D on an adjacent plate by a straight arm orbar 36. Thus, thefirst connection point 32A ofplate 30A is connected to thesecond connection point 34B of theplate 30B by one of thearms 36. Thefirst connection point 32B ofplate 30B is connected to thesecond connection point 34C ofplate 30C by anotherconnection arm 36. Thus, thearms 36 tie the plates 38A-D together such that the plates 38A-D, and thereby thewall segments 20A-D, move simultaneously. As seen inFIGS. 5 and 6 , two of the arms extend beneath theplates 30A-D, and the other two arms extend above theplates 30A-D, such that thearms 36 do not interfere with one another. - The linkage assembly also includes an
actuation shaft 38 rotatably mounted in a bearing on therear wall 18. Theshaft 38 has abar 42 fixed thereto extending opposite directions from theshaft 38. A pair ofarms 44 are pivotally connected to the opposite ends of thebar 42 and thesecond connection points plates arms 44 are shown to be L-shaped inFIGS. 5 and 6 , but may take other configurations. - The
shaft 38 is rotated in opposite directions by a reversible motor (not shown). The motor is operatively connected to the controls of the washing machine 10 such that theshaft 38 is rotated in a first direction to move thewall segments 20A-D to the contracted position, via the linkage assembly, just prior to the spin cycle. At the completion of the spin cycle, the motor rotates theshaft 38 in the opposite direction so as to move thewall segments 20A-D to the expanded position. It is understood that thewall segments 20A-D may be moved between the expanded and contracted positions using other means, without departing from the scope of the present invention. For example, thesegments 20A-D could each have separate drive motors which would move thewall segments 20A-D between the expanded and contracted positions, either simultaneously or sequentially. - The invention has been shown and described above with the preferred embodiments, and it is understood that many modifications, substitutions, and additions may be made which are within the intended spirit and scope of the invention. From the foregoing, it can be seen that the present invention accomplishes at least all of its stated objectives.
Claims (20)
1. A washing machine having a rotatable drum for holding articles to be washed, the drum comprising:
first and second end walls;
a plurality of wall segments connected to the end walls and defining a sidewall extending 360°; and
the segments being movable between expanded and contracted positions such that the diameter of the sidewall is variable.
2. The washing machine of claim 1 wherein the segments are pivotally connected to the end walls.
3. The washing machine of claim 1 wherein the segments include first ends pivotally connected to the end walls and second ends which are moveable inwardly and outwardly with respect to an axis of rotation of the drum.
4. The washing machine of claim 3 further comprising a linkage assembly connected to the first ends of the segments to pivot the second ends about the first ends.
5. The washing machine of claim 4 further comprising a shaft to drive the linkage assembly between a first position wherein the segments are expanded and a second position wherein the segments are contracted.
6. The washing machine of claim 4 wherein the linkage assembly resides outside one of the end walls.
7. The washing machine of claim 3 wherein the inner ends of each segment engages an adjacent segment in both the expanded and contracted positions.
8. The washing machine of claim 1 wherein the segments are moved from the expanded position to the contracted position for a spin cycle of the machine.
9. The washing machine of claim 8 wherein the segments are in the expanded position for wash and rinse cycles of the machine.
10. The washing machine of claim 1 further comprising a stationary outer tub surrounding the drum.
11. A method of washing laundry in a washing machine having a drum with an adjustable sidewall, the method comprising:
moving wall segments of the sidewall to an expanded position for wash and rinse cycles of the machine;
moving the wall segments to a contracted position for a spin cycle of the machine; and
maintaining adjacent wall segments in contact with one another in both the expanded and contracted positions.
12. The method of claim 11 wherein the movement of the wall segments is by pivoting action.
13. The method of claim 11 wherein the wall segments move simultaneously.
14. The method of claim 11 wherein the wall segments move equally.
15. The method of claim 11 further comprising controlling movement of the wall segments with a linkage assembly.
16. The method of claim 11 further comprising actuating the movement of the wall segments with a rotatable shaft.
17. A washing machine, comprising:
a drum rotatably mounted within the machine;
a plurality of wall segments defining a sidewall of the drum;
adjacent wall segments overlappingly engaging one another; and
the sidewall of the drum being expandable and contractible.
18. The washing machine of claim 17 wherein the wall segments are pivotal so as to expand and contract the sidewall of the drum.
19. The washing machine of claim 18 further comprising a linkage assembly to control pivotal movement of the wall segments.
20. The washing machine of claim 18 further comprising a reversibly rotatable shaft to pivot the wall segments between expanded and contracted positions.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/117,044 US20060243002A1 (en) | 2005-04-27 | 2005-04-27 | Contracting spinner for clothes washer |
CA002539307A CA2539307A1 (en) | 2005-04-27 | 2006-03-10 | Contracting spinner for clothes washer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/117,044 US20060243002A1 (en) | 2005-04-27 | 2005-04-27 | Contracting spinner for clothes washer |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060243002A1 true US20060243002A1 (en) | 2006-11-02 |
Family
ID=37193934
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/117,044 Abandoned US20060243002A1 (en) | 2005-04-27 | 2005-04-27 | Contracting spinner for clothes washer |
Country Status (2)
Country | Link |
---|---|
US (1) | US20060243002A1 (en) |
CA (1) | CA2539307A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140283562A1 (en) * | 2013-03-25 | 2014-09-25 | Sara Poole | Interchanging washer/dryer device |
EP3498906A1 (en) * | 2017-12-15 | 2019-06-19 | Vestel Elektronik Sanayi ve Ticaret A.S. | Control of vibration in a washing machine |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2250659A (en) * | 1940-06-03 | 1941-07-29 | Abraham Geisinger | Power laundry washer |
US2533888A (en) * | 1943-12-23 | 1950-12-12 | Leo M Kahn | Cleaning or laundry machine |
US2645916A (en) * | 1949-08-20 | 1953-07-21 | Avco Mfg Corp | Horizontal axis washer and squeezer extractor |
US2953009A (en) * | 1957-10-25 | 1960-09-20 | Martin L Abel | Washing machine |
US3402576A (en) * | 1966-02-28 | 1968-09-24 | Michael R. Krupsky | Combination clothes washer, dryer, dishwasher, drycleaner, and garment appearance-finishing machine |
US6012306A (en) * | 1998-02-17 | 2000-01-11 | Raes; Gerard | Combined laundry washing and drying machine |
-
2005
- 2005-04-27 US US11/117,044 patent/US20060243002A1/en not_active Abandoned
-
2006
- 2006-03-10 CA CA002539307A patent/CA2539307A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2250659A (en) * | 1940-06-03 | 1941-07-29 | Abraham Geisinger | Power laundry washer |
US2533888A (en) * | 1943-12-23 | 1950-12-12 | Leo M Kahn | Cleaning or laundry machine |
US2645916A (en) * | 1949-08-20 | 1953-07-21 | Avco Mfg Corp | Horizontal axis washer and squeezer extractor |
US2953009A (en) * | 1957-10-25 | 1960-09-20 | Martin L Abel | Washing machine |
US3402576A (en) * | 1966-02-28 | 1968-09-24 | Michael R. Krupsky | Combination clothes washer, dryer, dishwasher, drycleaner, and garment appearance-finishing machine |
US6012306A (en) * | 1998-02-17 | 2000-01-11 | Raes; Gerard | Combined laundry washing and drying machine |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140283562A1 (en) * | 2013-03-25 | 2014-09-25 | Sara Poole | Interchanging washer/dryer device |
EP3498906A1 (en) * | 2017-12-15 | 2019-06-19 | Vestel Elektronik Sanayi ve Ticaret A.S. | Control of vibration in a washing machine |
Also Published As
Publication number | Publication date |
---|---|
CA2539307A1 (en) | 2006-10-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: MAYTAG CORPORATION, IOWA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WUNDERLICH, DANIEL F.;REEL/FRAME:017052/0821 Effective date: 20050421 |
|
STCB | Information on status: application discontinuation |
Free format text: EXPRESSLY ABANDONED -- DURING EXAMINATION |