EP0629734A1 - Ring zum Verbinden zweier Teile eines Waschmaschinebehälters - Google Patents
Ring zum Verbinden zweier Teile eines Waschmaschinebehälters Download PDFInfo
- Publication number
- EP0629734A1 EP0629734A1 EP94830282A EP94830282A EP0629734A1 EP 0629734 A1 EP0629734 A1 EP 0629734A1 EP 94830282 A EP94830282 A EP 94830282A EP 94830282 A EP94830282 A EP 94830282A EP 0629734 A1 EP0629734 A1 EP 0629734A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ring
- coupling
- wings
- end portions
- elements
- 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.)
- Granted
Links
Images
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
- D06F37/263—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D45/00—Clamping or other pressure-applying devices for securing or retaining closure members
- B65D45/32—Clamping or other pressure-applying devices for securing or retaining closure members for applying radial or radial and axial pressure, e.g. contractible bands encircling closure member
Definitions
- the present invention relates to split coupling rings for connecting the peripheral flanges of the two elements forming the tank of a washing machine.
- Such rings are comprised of a channel-shaped profile element, bent to form a ring, of metal material, having two side wings and a bottom central wall which define a cross-section which is substantially V-shaped, with a cavity facing the ring axis.
- Rings of the above indicated type have been known and used for some time, which have their adjacent ends bent outwardly, substantially at right angles with respect to the adjacent part of the ring, said ends having a pair of facing holes for engagement of a clamping bolt.
- the rings of this type do not prove to be fully satisfactory in use, because of the tendency of the two deformed ends of the ring to deform further as a result of the tension of the bolt, preventing at the same time a proper clamping of the connected parts.
- Rings are also known whose adjacent ends are provided with auxiliary welded elements having passages in line with each other for the engagement of a clamping bolt.
- the rings of this latter type provide an efficient clamping of the connected parts as requested, but are complicated and costly to manufacture (see for example figure 2 of French patent No. 2.296.048).
- Solutions are also known in which the two ends of the ring are provided with hooks and, respectively, apertures which are to cooperate together to provide a mutual engagement (see figures 3-12 of the above identified French patent). Also this solution has the drawback to require a ring with a relatively complicated and costly structure.
- the same applies to the solution known from French patent No. 2.355.943 in which on the ends of the ring there are mounted L-shaped brackets connected to each other by a clamping screw.
- each end of the coupling ring is permanently deformed so as to be radially outwardly offset with respect to the adjacent portion of the ring, with the part of the bottom wall of the profile element which connects the bottom wall of each offset end portion to that of the immediately adjacent part of the profile element which has a hole defining along with the cavity of the end portion a passage for the engagement of a clamping bolt.
- this solution is much better with respect to the known solutions which have been cited above both from the standpoint of the reliability of the coupling, and from the standpoint of simplicity of manufacture and assembling.
- the object of the present invention is that of providing a coupling ring of the type indicated at the beginning of the present description which is yet more simple and cheap to manufacture with respect to the known solutions which have been described above.
- the invention provides a split coupling ring for coupling the peripheral flanges of the two elements forming the tank of a laundry-washing machine, said ring being comprised of a channel-shaped profile element bent as a ring, of metal material, having two side wings and a central bottom wall which define a cross section which is substantially V-shaped, with a cavity facing the ring axis, characterised in that the two ends of the ring are not provided with any hole or passage for connecting screws and with any further connecting element, said ring ends being so shaped and arranged that they can be connected to each other by a folded seam of said side wings, at least on one side of said channel.
- the coupling ring according to the invention is therefore dramatically simpler and less costly to manufacture with respect to the known rings, since, contrary to the latter, it is not provided with any hole for engagement of connecting screws, or any other type of connecting element (such as those provided in French patent No. 2.296.048).
- British patent GB-A-361.229 discloses a split ring for coupling a sheet-metal cover to the mouth of a container.
- the ends of the ring do not have a V-shaped cross section, but are merely formed by two flat portions which are overlapped to each other and connected by a permanent deformation, with the aid of a coupling band.
- This solution is not adapted to be applied to the coupling of the elements forming the tank of a laundry-washing machine, since it is not able to ensure a fluid sealed connection between the elements at the coupled ends of the ring.
- the folded seam is provided on one or both wings of the V-shaped cross section of the ring, so that also at the coupling site of the ends of the ring the latter clamp the flanges of the elements to be connected therebetween, ensuring thereby the fluid seal.
- Other known solutions provide connecting tabs on the coupling ends of the ring, such tabs being bent to provide the connection (see for example French patent No. 1.058.737, US patent No. 1.929.375, German patent application No. 37 14 890). These solutions are not advantageous, since they involve a relatively complicated and costly structure of the ring ends. The same applies to solutions which provide connecting hooks on the coupling ends of the ring (see for example US patent No. 1.912.179 and US patent No. 2.078.009).
- the present invention naturally provides also a method for coupling the peripheral flanges of the two elements forming the tank of a washing machine, in which a coupling ring of the above indicated type is provided and the coupling of the ends of the ring is carried out by a folded seam of said side wings, at least on one side of the channel.
- the side wings at least on one side of the channel, are deformed in a plane which is inclined outwardly, so as to allow the subsequent engagement of a seaming tool.
- the seaming operation may be carried out by an engagement of the tool directly on the superimposed wings of the two end portions of the ring, or above an auxiliary element covering as a seal the side superimposed wings of the end portions of the ring.
- the invention also provides a device for locking the ring comprising two jaws having respective seats able to engage the ring in two areas adjacent the said end portions, said jaws being movable between a relatively spaced apart inoperative position and a relatively close operative position, in which their facing surfaces come in contact with said end portions, so as to push the two ends of the ring towards each other, said device being further provided with means for rigidly connecting the outwardly deformed superimposed wings of the two ends of the coupling ring, once the latter has been clamped as a result of the movement of said jaws to their operative positions.
- the rigid connection of the outwardly deformed superimposed wings of the two ends of the ring is preferably carried out by a folded seam, particularly by cutting and bending a plurality of tabs from said superimposed wings.
- tabs Preferably, such tabs have a dovetail profile or a toothed profile or an inverted T-shaped profile, in order to render the connection even safer.
- the invention also provides the ring coupling arrangement obtained by the above described method.
- reference numeral 1 generally designates a tank of a laundry-washing machine, comprising a substantially cup-shaped element 2 and a disk 3 which covers the mouth of the cup-shaped element 2 and has a central aperture 4 for introduction of the laundry.
- the elements 2, 3 At their joining edges, the elements 2, 3 have two circumferential flanges 2a, 3a, having a sealing strip interposed therebetween.
- the two flanges 2a, 3a are connected to each other by a split coupling ring 5 according to the present invention.
- the ring according to the invention may be used also with a structure of the tank different from that which is illustrated, in which the joining flanges are provided at an intermediate plane spaced apart from both the end faces of the tank or located at the rear face thereof rather than at the front face as in the illustrated case.
- the coupling ring 5 is comprised of a channel-shaped profile element 6 (see figure 4) of metal material, having two side wings 7 and a central bottom wall 8 which define a substantially V-shaped cross-section with a cavity facing the ring axis.
- the ring 5 is arranged over such flanges, with the side wings 7 of the two end portions of the channel 6 superimposed on each other (figure 2).
- the coupling of said end portions of the channel is made by a permanent deforming operation providing a folded seam on the wings 7.
- Figure 3 shows an embodiment of such folded seam, providing the cutting and simultaneous bending at right angles of a number of superimposed tabs 7a of the wings 7.
- the folded seam is provided only on one side of the channel 6. However, it might be made also on both sides.
- the portion of the latter which is adjacent to the ends of the ring is deformed in a plane inclined outwardly, as clearly visible in figure 5.
- the seam operation may be made in any other way different from what is illustrated in figure 3. Furthermore, it is possible to provide for the seaming tool to engage over an auxiliary element (not illustrated) of sheet metal, covering as a seal, the superimposed portions of wings 7.
- the coupling ring 5 has an extremely simple and cheap structure. As a matter of fact, it is not provided with any hole or passage for engagement of fixing screws or any other connecting means.
- a device as illustrated in figures 7-11 is preferably used.
- the portion 8a of the wall of the ring which connects each end portion of the wings 7 and the adjacent portion of the ring defines a shoulder surface.
- the device according to the invention for locking the ring in the clamping condition comprises two jaws 50, each having a seat 51 which is to engage over a corresponding part of the clamping ring adjacent to a respective end portion.
- the two jaws 50 are movable along an axis 51a tangential with respect to the coupling ring, between two relatively spaced apart inoperative positions and two relatively close operative positions (figure 7) in which the facing surfaces 50a of the jaws 50 come in contact with said shoulders 8a causing the two end portions of the ring to superimpose to each other in the proper clamping condition of the ring.
- a further device 52 carries out the permanent connection of said end portions of the ring.
- the device 52 comprises a die 53 and a punching element 54 able to cut and bend a plurality of tabs from the superimposed portions of said side end wings of the ring, so as to form a folded seam of the wings.
- the device according to the invention may be provided with means of any known type for driving the movement of the jaws 50 and the punching element 54.
- the two jaws 50 may be connected to each other by screw means which drive the movement thereof and are mounted on the body of the die 53.
- the jaws 52 are preferably driven by actuators of any known type (for example fluid actuators) which are on their turn controlled according to an automatic cycle of operations, the same applying to the device 52.
- actuators of any known type for example fluid actuators
- Figure 9 shows a preferred solution in which the seaming device is able to form tabs 60 with a dovetail profile, to ensure a safer connection.
- Figure 10 shows a variant in which tabs 60 have substantially straight sides with a toothed profile. Alternatively, it is possible to provide tabs with an inverted T-shaped profile.
- figure 11 shows the case in which the superimposed wings of the two end portions of the ring are rigidly connected to each other by a welding operation.
- the locking device according to the invention is characterised in that it can perform the final locking operation of the two ends of the split coupling ring without requiring the ring to be provided with any hole or seat to allow the clamping operation on the ring.
- a coupling ring according to the invention By adopting a coupling ring according to the invention, the use of the tensioning bolt which is provided according to the conventional art can be avoided.
- the device according to the invention is able to hold the ring in the clamping condition as well as to lock the ring in the clamped condition in a simple and fast way.
- the present invention provides on one hand a coupling ring which is particularly simple and cheap and on the other hand a locking operation which is simple, rapid and safe.
- the invention may be carried out by two half-rings connected to each other in the above described way, at two diametrically opposed areas on the periphery of the tank.
- Such solution may be preferable, given the very low cost of the coupling operation, since it is particularly adapted for an automated assembling.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITTO930435 | 1993-06-17 | ||
ITTO930435 IT1260871B (it) | 1993-06-17 | 1993-06-17 | Anello aperto di giunzione, particolarmente per il collegamento delle flange periferiche dei due elementi costituenti la vasca di una macchina lavabiancheria, procedimento di giunzione utilizzante tale anello e giunzione ottenuta mediante tale procedimento |
ITTO930805 | 1993-10-28 | ||
ITTO930805A IT1261321B (it) | 1993-10-28 | 1993-10-28 | Dispositivo per il serraggio di un anello aperto di giunzione, particolarmente per il collegamento delle flange periferiche dei due elementi costituenti la vasca di una macchina lavabiancheria |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0629734A1 true EP0629734A1 (de) | 1994-12-21 |
EP0629734B1 EP0629734B1 (de) | 1997-09-03 |
Family
ID=26332227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94830282A Expired - Lifetime EP0629734B1 (de) | 1993-06-17 | 1994-06-10 | Ring zum Verbinden zweier Teile eines Waschmaschinenbehälters |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0629734B1 (de) |
AT (1) | ATE157715T1 (de) |
DE (1) | DE69405306T2 (de) |
ES (1) | ES2107784T3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0801163A2 (de) * | 1996-04-09 | 1997-10-15 | Lemp S.r.L. | Montageverfahren für einen Kupplungsring in einem Waschmaschinenbehälter |
DE102021205433A1 (de) | 2021-05-28 | 2022-12-01 | BSH Hausgeräte GmbH | Laugenbehälter mit spezifischem Verbindungsbereich zwischen einem Hohlzylinder und einer Rückwand, sowie Haushaltsgerät |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB361229A (en) * | 1931-03-05 | 1931-11-19 | Frederick William Williams | Improvements in or relating to means for securing lids on drums or the like |
US1912179A (en) * | 1930-08-26 | 1933-05-30 | Cornell Securities Corp | Metallic receptacle and closure therefor |
US1929375A (en) * | 1931-07-13 | 1933-10-03 | Petroleum Iron Works Company | Means for sealing open head drums |
US2078009A (en) * | 1935-03-28 | 1937-04-20 | Mauser Maschinenbau Gmbh | Tension ring closure for packing containers |
FR1058737A (fr) * | 1952-06-26 | 1954-03-18 | Dispositif de serrage et de verrouillage de l'organe de fermeture des fûts, boîteset autres emballages | |
FR2296048A1 (fr) * | 1974-12-24 | 1976-07-23 | Thomson Brandt | Machine a laver le linge a tambour |
FR2355943A1 (fr) * | 1975-11-18 | 1978-01-20 | Thomson Brandt | Machine a laver le linge, a tambour |
EP0210143A1 (de) * | 1985-07-19 | 1987-01-28 | LEMP S.n.c. di PIANI G. e SASSO A. | Offener Verbindungsring, insbesondere zum Verbinden der Umfangsflansche von zwei Elementen, die den Behälter einer Waschmaschine bilden |
DE3714890A1 (de) * | 1987-05-05 | 1988-12-01 | Muhr & Soehne | Behaelter mit nicht abnehmbarem deckel |
-
1994
- 1994-06-10 DE DE69405306T patent/DE69405306T2/de not_active Expired - Fee Related
- 1994-06-10 AT AT94830282T patent/ATE157715T1/de not_active IP Right Cessation
- 1994-06-10 EP EP94830282A patent/EP0629734B1/de not_active Expired - Lifetime
- 1994-06-10 ES ES94830282T patent/ES2107784T3/es not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1912179A (en) * | 1930-08-26 | 1933-05-30 | Cornell Securities Corp | Metallic receptacle and closure therefor |
GB361229A (en) * | 1931-03-05 | 1931-11-19 | Frederick William Williams | Improvements in or relating to means for securing lids on drums or the like |
US1929375A (en) * | 1931-07-13 | 1933-10-03 | Petroleum Iron Works Company | Means for sealing open head drums |
US2078009A (en) * | 1935-03-28 | 1937-04-20 | Mauser Maschinenbau Gmbh | Tension ring closure for packing containers |
FR1058737A (fr) * | 1952-06-26 | 1954-03-18 | Dispositif de serrage et de verrouillage de l'organe de fermeture des fûts, boîteset autres emballages | |
FR2296048A1 (fr) * | 1974-12-24 | 1976-07-23 | Thomson Brandt | Machine a laver le linge a tambour |
FR2355943A1 (fr) * | 1975-11-18 | 1978-01-20 | Thomson Brandt | Machine a laver le linge, a tambour |
EP0210143A1 (de) * | 1985-07-19 | 1987-01-28 | LEMP S.n.c. di PIANI G. e SASSO A. | Offener Verbindungsring, insbesondere zum Verbinden der Umfangsflansche von zwei Elementen, die den Behälter einer Waschmaschine bilden |
DE3714890A1 (de) * | 1987-05-05 | 1988-12-01 | Muhr & Soehne | Behaelter mit nicht abnehmbarem deckel |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0801163A2 (de) * | 1996-04-09 | 1997-10-15 | Lemp S.r.L. | Montageverfahren für einen Kupplungsring in einem Waschmaschinenbehälter |
EP0801163A3 (de) * | 1996-04-09 | 1998-01-21 | Lemp S.r.L. | Montageverfahren für einen Kupplungsring in einem Waschmaschinenbehälter |
DE102021205433A1 (de) | 2021-05-28 | 2022-12-01 | BSH Hausgeräte GmbH | Laugenbehälter mit spezifischem Verbindungsbereich zwischen einem Hohlzylinder und einer Rückwand, sowie Haushaltsgerät |
Also Published As
Publication number | Publication date |
---|---|
DE69405306T2 (de) | 1998-03-05 |
DE69405306D1 (de) | 1997-10-09 |
ATE157715T1 (de) | 1997-09-15 |
EP0629734B1 (de) | 1997-09-03 |
ES2107784T3 (es) | 1997-12-01 |
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