EP0870860A1 - Closing system in plastic tank for washing machine - Google Patents
Closing system in plastic tank for washing machine Download PDFInfo
- Publication number
- EP0870860A1 EP0870860A1 EP98500054A EP98500054A EP0870860A1 EP 0870860 A1 EP0870860 A1 EP 0870860A1 EP 98500054 A EP98500054 A EP 98500054A EP 98500054 A EP98500054 A EP 98500054A EP 0870860 A1 EP0870860 A1 EP 0870860A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tank
- washing machine
- parts
- halves
- projectings
- 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.)
- Withdrawn
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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
- D06F37/26—Casings; Tubs
- D06F37/261—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements
- D06F37/262—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements made of plastic material, e.g. by injection moulding
-
- 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
- D06F37/26—Casings; Tubs
- D06F37/261—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements
- D06F37/263—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements assembled from at least two elements connected to each other; Connecting or sealing means therefor
Abstract
Union sytem between the two parts of a washing machine tank, being of the kind
of those tanks that are made up of two halves, remaining open the union base in both, so
that one of the halves coincides with the frontal part of the washing machine and the other
defines the closed back part of the tank with the axial central hole for the pass of the turn
spindle of the drum, so that the two halves (1) and (2) that form the washing machine tank
have, in relationship to their backing base, the assembly means between them and the
closing and fixing means, so that th assembly means in the tank half (1) are defined by a
whole of axial projectings (6), with regard to the backing perimeter, that are finished off
like a tip of harpoon.
Description
As is expressed in the title of the present descriptive report, the following invention
consists on a union system between the two parts of a washing machine tank, being of the
kind of those plastic tanks that are defined starting from two halves that are obtained from
amould, which are backed by its open base for forming the tank, being joined between
them so that in relationship to the backed bases, one of the tank halves has some axial
projectings that are finished off like a tip of harpoon while the base of the other tank half
has some radial projectings like a inverted U, with the external surface defining an inclined
plane.
In the union between the two tank halves, the axial projectings that are finished off
like a tip of harpoon of one of the tank halves cross over the hollows of the radial
projectings like a inverted U of the other half to the inclined external surface, remaining
the extreme like a tip of harpoon slightly separated with regard to the cited surface,
allowing the placement of a flange between the cited extreme and the inclined plane that
is defined by the external surface of the radial U-shaped projectings.
The cited flange remains perimetrically to the tank in relationship to the inclined
surface of the radial projections like a inverted U, being one of its extremed finished off by
a nut while other extreme is finished off by a ring-shaped body, so that placing a screw in
the ring-shaped body so that its head comes across, and threading the same one to the
nut of the opposed extreme in which the flange is finished off, causing the fix of both
halves between them, since the flange comes across the projection of the axial projecting
of the other half and sliding on the inclined plan, it materializes a interlocked union without
the minimum play, and at the same time it can be easily disassembled by the technical
assistance service when the fix screw is unscrewed, being able to be assembled again.
Definitively, it is a question of obtaining a closing system, between the two parts
that form the plastic tank of a washing machine, wery economic and that at the same time
allows their separation and later new union between the two halves in those exceptional
cases in which the washing machine tank must be manipulated by the technical
assistance service because of technical motives.
The closing system that is presented in the present descriptive report is specially
applicable in the closing between the two halves of washing machine tank of plastic
material, so that both halves are obtained from mould, not having to increase the mould
complexity for their manufacture since the elements that materialize the union, that also
are obtained from a mould, do not increase the price neither the procces nor the product.
Thus, the two tank halves define the tank structure through their union according
to their central perimeter with the interposition of the corresponding watertightness joint,
while one of the bases of one of the tank halves remains open for being in relationship to
the washing machine door, and the other base of the other half defines the closed back
part with an axial central hole for the pass of the drum spindle.
Conventionally, the plastic tanks of the washing machines are manufatured from a
mould according to two halves that form through their union the washing machine tank
that will lodge the drum so that in the manufacture of the own tank body, the accessory
elements for its subjection and for the union of other elements are defined, as well as for
being able to materialize the union between the two halves, for forming a watertight body.
Thus, the two halves that form the washing machine tank are perimetrically joined
according to their central part so that one of the bases of one of the halves is open for
remaining in relationship to the frontal of the washing machine door, and the other half
defines the back part of the tank with the axial central hole for the pass of the spindle of
the drum that will lodge the tank.
For materializing the union between the two tank halves in relationship to the open
union base, some radial lungs are defined so that they are endowed of some holes for the
threaded of the respective screws that will realize the union.
Likewise, the corresponding o-ring seal, that will guarantee a watertight closing, is
placed between both union bodies.
In this way, the union between the both halves will be done by a whole of screws
that fix both bodies between them, so that one or several workers must realize the screws
threaded, which requires the use of long time, since we can consider that about 17 screws
are used for the union between both halves.
With this configuration, we must have into account that the amount of cited screws
must be used for obtaining the tank, with the cost that it means, as well as the bigger time
that is spent in the threaded of all them, which definitively means a high cost as a
consequence of the added value of the used screws and the amount of workforce that is
necessary for carrying out the closing operation.
In this way, if the washing machine with this configuration must be disassembled
because of technical necessities, its two halves can be disassembled unscrewing all the
fixing screws, and later can be assembled again fixing the two halves that form the tank by
means of the union screws.
Likewise, the holder of the present dossier is also the holder of the Invention
Patent P9600222, in which " a closing system for plastic washing machine tank " is
claimed, being the plastic tank of the kind of those that are formed by the union of two
halves, so that one of the halves has some axial projectings, in relationship to the
perimeter of the backing base, that are finished off like a tip of harpoon while the other
tank half has some U-shaped projectings in inverted position, in relationship to the
perimeter of its backing base to the other half, that coincides with the axial projectings of
the other half.
With this structure, the fastening between both halves is materialized when the
projections of the extremes like a harpoon of the axial projecting come across the free
extreme of the inverted U-shaped projectings.
In the other hand, the two halves that form the tank have some projectings that
coincide among them, for their union by means of the respective screws and nuts, in the
exceptional case in which the tank must be disassembled and thus, being able to
assemble it again.
In the present report, an union system between the two halves of a washing
machine tank is described, being of the kind of those tanks that are made up of two
halves or parts, remaining open the union base in both, while one of halves of the other
base, that also is open, coincides with the frontal part that is relative to the washing
machine door, and the other one defines the closed back part of the tank with the axial
central hole for the pass of the turn spindle of the drum, so that the backing base of one of
the halves of the washing machine tank is finished off in a U-shaped outline, while the
base of the other tank half is finished off by an edge that is inserted in the interior of the U-shaped
outline of the other half, coming across the corresponding o-ring seal.
In the other hand, the two halves that form the tank have, in relationship to their
backing base, the means of assembly between them as well as the closing and fixing
means.
Thus, the assembly means of the two halves that form the tank through their union
are defined in one of them by a whole of axial projectings with regard to the perimeter of
the backing base, that are finished off like a tip of harpoon while the assembly means of
the other tank half are defined by some inverted U-shaped radial projectings, in
relationship to which ones, the axial projectings of the other tank half are placed in the
assembly of the same one.
The internal surface of the radial projectings of one of the halves or parts of the
tank defines an inclined plan, being the extreme like a tip of harpoon of the corresponding
axial projecting in relationship to the cited internal surface in the assembly of the other
tank half.
The closing and fixing means of the two halves of the washing machine tank are
defined by an open flange of steel which is finished off by a nut in one of its extremes,
while its other extreme is finished off by a ring-shaped body.
The cited flange remains perimetrically to the tank in relationship to inclined
surfaces of the radial projections of the corresponding tank half, coming across the
projections of the extremes like a tip of harpoon of the axial projectings of the other tank
half, materializing the closing and the fixing by means of a screw whose head come
across the o-ring seal of the corresponding flange extreme and whose threaded rod is
threaded in the nut of the opposed extreme, exerting the closing pressure on the
perimetric joint in its threaded.
In this way, if we thread the screw, the flange extremes are closed, sliding by the
inclined surfaces of the radial projections of the corresponding tank half, dragging the
axial projectings for obtaining the closing between the two tank halves, so that the edge
of one of them presses on the o-ring seal that is lodged in the interior of the U-shaped
outline that finishes off the backing base of the other half.
The great advantage of the union system that is proposed for the two halves or
parts of a washing machine tank is based on that it can be disassembled only unscrewing
the screw, allowing the later closing of the two tank halves by means of the flange, with a
total reliability.
In order to complement the description which is done hereinafter and with the
purpose of providing a better understanding of its characteristics, the present descriptive
report is accompanied by a drawing, in whose figures the most significant details of the
invention are defined in an illustrative and not limitative way.
Figure 1.- It shows a detailed view in perspective of the union system between the
two halves of the washing machine tank, by means of a flange that remains in relationship
to the inclined plan that is defined by the internal surface of the inverted u-shaped
projections of one of the tank halves, and that is closed by means of a screw that is
threaded in the corresponding nut that is finished off by one of the open extremes of the
fix flange.
Figure 2.- It shows a detailed sectioned of the way of acting of the flange for
materializing a perfect closing between both detachable halves of the tank, so that we can
observe as the flange remains on an inclined plan, coming across the projection of the
axial projecting of one of the halves that is finished off like a tip of harpoon.
In view of the above cited figure and in accordance with the adopted numbering
we can observe as the two halves (1) and (2), that form the washing machine tank through
their union, are joined between them by their backing base so that one of halves is
finished off according to an U-shaped outline (3) for fitting the edge (4), in which the other
half (2) that forms the washing machine tank is finished off, into the defined lodging.
Likewise, the half (1) of the washing machine tank has a whole of axial projectings
(6) that are finished off like a tip of harpoon in its backing base, while the other half (2)
has some U-shaped radial projectings (7) in a inverted position, which remain during the
assembly in relationship to the axial projectings (6) of the other half (1).
The radial projectings (7) have the internal surface of the same ones according to
an inclined plan, being the projecting (9) of the extreme like a tip of harpoon finished off by
the radial projectings of the other tank half, so that they remain slightly separated from the
cited inclined surface, so that it is allowed to place a fix flange (10), between the
projecting (9) of the extreme like a tip of harpoon of the axial projectings (6) and the
inclined internal surface (8) of the inverted U-shaped radial projectings (7), for joining both
tank halves.
The open flange (10) of steel is finished off by a nut (11) in one of its extremes,
while its other extreme is finished off by a ring-shaped body (12) in which a screw, whose
head come across it, is lodged while its threaded rod is threaded in the nut (11) so that its
threaded cause the progressive closing of the flange (10), descending by the inclined plan
(8) of the inverted U-shaped projections (7), pressing on the projection (9) of the axial
projectings (6) of the other tank half.
With this structure, such as it is observed in the figure 2 of the designs, when the
flange (10) is closed by the progressive threaded of the screw (13) in the nut (11), the
edge (4) of the tank half (2) presses on the o-ring seal (14) that is placed in the housing
(5) that is defined by the outline (3) in which the tank (1) is finished off, materializing a
perfect closing since all possible play is eliminated.
Besides when the closing of the two halves (1) ) and (2) is done, a great advantage
emerges since the tank can be disassembled in a simple way, unscrewing the screw (13)
from the nut (11) if the tank manipulation by theTechnical Assistance service is necessary,
with an added advantage that consists on the tank can be assembled again in a simple
and fast way, backing their two halves and placing the axial projectings (6) in relatioship to
the radial projectings (7) for closing finally the flange (10) again, such as before it has
been specified, since it is not necessary the use of some special tool or instrument.
Definitively, the assembly of the two tank parts (1) and (2) will be the following
one:
The two halves (1) ) and (2) that form the tank are backed so that the edge (4) of
the tank half (2) remains in contact on the joint (14) that is placed in the interior of the U-shaped
outline (3) in which the tank half (1) ) is finished off, while at the same time the axial
projections (6) of the tank half (1) ) cross over the projectings (7) like a U inverted of the
tank (2), so that the internal surface of the U-shaped projectings (7) define an inclined
plan.
Finally, an open flange (10) is placed perimetrically to the tank outline in
relationship to the inclined plans (8) that define the internal surfaces of the inverted U-shaped
projections (7), coming across the extreme projection (9) of the axial projectings
(6), so that the open extremes of the flange (10) are respectively finished off by a nut (11),
and by a ring-shaped body (12).
With this structure, the materialization of the fix of both halves will be carried out
placing a screw (13) whose head comes across the ring-shaped projecting (12), while its
threaded rod is threaded in the nut (11), realizing the respective closing of the flange that
implies the approximation of both halves, pressing the edge (4) on the joint (14).
To disassemble the two tank halves (1) and (2), we only have to unscrew the
screw (13), so that later there is the possibility of being able to assembly the tank in an
identical way that the described one without the minimum lack of reliability.
As an added advantage in the own tank assembly the closed flange can be
assembled, without lacks of workforce.
Claims (6)
- UNION SYSTEM BETWEEN THE TWO PARTS OF A WASHING MACHINE TANK, being of the kind of those tanks that are made up of two halves, remaining open the union base in both while in one of the halves the other base coincides with the frontal part of the washing machine door, and the other one defines the closed back part of the tank with the axial central hole for the pass of the turn spindle of the drum, and characterized in that the two parts (1) ) and (2) that form the washing machine tank have, in relationship to their backing base, the assembly means between them and the closing and fixing means.
- UNION SYSTEM BETWEEN THE TWO PARTS OF A WASHING MACHINE TANK, according to the first claim and characterized in that the assembly means of both parts (1) and (2) are defined in the tank half (1) by a whole of axial projectings (6), with regard to the perimeter of the backing base, that are finished like tip of harpoon, while the assembly means of the other tank half (2) are defined by some radial projectings (7) like a inverted U, so that the axial projecting (6) are placed during the tank assembly in relationship to the projectings (7) of the other half (2).
- UNION SYSTEM BETWEEN THE TWO PARTS OF A WASHING MACHINE TANK according to the first and second claims and characterized in that the internal surface of the radial projectings (7) of the tank half (2) remaining with regard to them, the free extremes like tip of harpoon of the corresponding axial projecting (6) of the other half, being defined an inclined plane.
- UNION SYSTEM BETWEEN THE TWO PARTS OF A WASHING MACHINE TANK according to the first claim and characterized in that the means of closing and fixing of the two parts (1) and (2) of the tank are defined by an open flange (10) of steel, which is finished off by a nut (11) ) in one of its extremes, while its other extreme is finished off by a ring-shaped body.
- UNION SYSTEM BETWEEN THE TWO PARTS OF A WASHING MACHINE TANK according to the first and fourth claims and characterized in that the flange (10) remains placed in a perimetric way with regard to the tank, in relationship to the inclined surfaces (8) of the radial projections (7) of the tank half (2), acting as a stop on the projections (9) of the extremes, like tip of harpoon, of the axial projectings (6) of the other tank half, materializing the closing and fixing through a screw (13) whose head acts as a stop on the ring-shaped body (12) and whose threaded rod is inserted into the nut (11), causing the closing pressure on the perimetric joint (14).
- UNION SYSTEM BETWEEN THE TWO PARTS OF A WASHING MACHINE TANK, according to the first and fourth claims and characterized in that the two parts (1) ) and (2) of the tank are detachable, unscrewing the screw (13) so that they can be assembled again without the minimum lack of reliability.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES9700386A ES2154516B1 (en) | 1997-02-24 | 1997-02-24 | UNION SYSTEM BETWEEN THE TWO PARTS OF A WASHER CUBE. |
| ES9700386 | 1997-02-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0870860A1 true EP0870860A1 (en) | 1998-10-14 |
Family
ID=8298373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98500054A Withdrawn EP0870860A1 (en) | 1997-02-24 | 1998-02-18 | Closing system in plastic tank for washing machine |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0870860A1 (en) |
| ES (1) | ES2154516B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007129352A1 (en) * | 2006-05-04 | 2007-11-15 | Meccanica Generale S.R.L. | System used to fix the two semi-shells of plastic tanks for washers, washer/dryer combos and similar appliances. |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0210143A1 (en) * | 1985-07-19 | 1987-01-28 | LEMP S.n.c. di PIANI G. e SASSO A. | Open joining ring, in particular for connecting the peripheral flanges of the two elements forming the washing tank of a washing machine |
| EP0272949A1 (en) * | 1986-11-18 | 1988-06-29 | Ciapem | Washing machine with a tub made of synthetic material |
| EP0789104A1 (en) * | 1996-01-31 | 1997-08-13 | Balay S.A. | Closing system in plastic tank for washing machine |
-
1997
- 1997-02-24 ES ES9700386A patent/ES2154516B1/en not_active Expired - Fee Related
-
1998
- 1998-02-18 EP EP98500054A patent/EP0870860A1/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0210143A1 (en) * | 1985-07-19 | 1987-01-28 | LEMP S.n.c. di PIANI G. e SASSO A. | Open joining ring, in particular for connecting the peripheral flanges of the two elements forming the washing tank of a washing machine |
| EP0272949A1 (en) * | 1986-11-18 | 1988-06-29 | Ciapem | Washing machine with a tub made of synthetic material |
| EP0789104A1 (en) * | 1996-01-31 | 1997-08-13 | Balay S.A. | Closing system in plastic tank for washing machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007129352A1 (en) * | 2006-05-04 | 2007-11-15 | Meccanica Generale S.R.L. | System used to fix the two semi-shells of plastic tanks for washers, washer/dryer combos and similar appliances. |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2154516A1 (en) | 2001-04-01 |
| ES2154516B1 (en) | 2001-10-16 |
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