EP1815778B1 - Aspirateur avec un couvercle en polypropylène - Google Patents

Aspirateur avec un couvercle en polypropylène Download PDF

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Publication number
EP1815778B1
EP1815778B1 EP07356006A EP07356006A EP1815778B1 EP 1815778 B1 EP1815778 B1 EP 1815778B1 EP 07356006 A EP07356006 A EP 07356006A EP 07356006 A EP07356006 A EP 07356006A EP 1815778 B1 EP1815778 B1 EP 1815778B1
Authority
EP
European Patent Office
Prior art keywords
vacuum cleaner
cover
inner cavity
separating device
expanded polypropylene
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.)
Active
Application number
EP07356006A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1815778A1 (fr
Inventor
François PYSZCZEK
Rénald Delalin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SEB SA
Original Assignee
SEB SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SEB SA filed Critical SEB SA
Priority to PL07356006T priority Critical patent/PL1815778T3/pl
Publication of EP1815778A1 publication Critical patent/EP1815778A1/fr
Application granted granted Critical
Publication of EP1815778B1 publication Critical patent/EP1815778B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners

Definitions

  • the invention relates to the field of household appliances vacuum cleaners and more particularly the structure of a vacuum cleaner.
  • the plastics used in the vacuum cleaners are as thin as possible so as to limit the weight of the apparatus, and reduce the effort required for handling the vacuum cleaner during its use, this manipulation being a major cause of fatigue, for example when floors are to be climbed or when stairs are to be cleaned.
  • a first problem encountered during the manufacture of a vacuum cleaner is therefore the reduction of the weight of the device, this problem being a permanent concern for vacuum cleaner manufacturers.
  • the desired weight reduction results in the thinning of the shell and the body which goes against the strength of the device.
  • the weight of plastic material used for the manufacture of a vacuum cleaner quickly reaches a limit determined by the strength of the assembly.
  • a second problem is to maintain the strength of the hull and the body while greatly reducing the weight of plastic material used and that of the vacuum cleaner.
  • Vacuuming in the home is not usually a very pleasant task, and in fact, the appliance is used without care. It often happens that the device hits furniture, walls or various objects placed in the home. On this occasion, given the rigidity of the frame of the vacuum cleaner, the shocked part is often damaged.
  • a third problem facing vacuum cleaner manufacturers is thus to combine good mechanical characteristics of the frame with possible shock absorption to limit the effects of imprudent handling.
  • One solution to this problem can be found in particular by rubber bands surrounding, like a belt, the body of the apparatus. Such a solution generates a significant additional cost.
  • a fourth problem that arises is to manufacture a vacuum cleaner whose materials can be easily, and if possible completely, recycled.
  • the document JP 02281695 describes a vacuum frame consisting of a rigid shell surrounded by a foam, allowing weight gain and soundproofing.
  • a vacuum frame consisting of a rigid shell surrounded by a foam, allowing weight gain and soundproofing.
  • the weight gain remains limited.
  • the invention therefore aims to solve these major difficulties, ie aims to achieve a vacuum cleaner reduced weight, good strength, can absorb shocks and having a high recyclability end of life.
  • the vacuum cleaner comprises a frame, as well as a cover, said housing accommodating in particular an electric motor-fan and a waste separation device connected to a connector opening out of the frame, said waste separation device being arranged in a housing formed in the frame of the vacuum cleaner, said electric motor-fan being able to depressurize the housing of the waste separation device in order to suck air through the connection inside the frame, said cover constituting one of the closing walls of the housing of the waste separation device, characterized in that the lid is made of expanded polypropylene, and in that it comprises at least one mechanical reinforcement of its structure.
  • Expanded polypropylene is formed of beads which are molded in the object using a press in the presence of steam.
  • the EPP has multiple qualities: temperature resistance up to 110 ° C, excellent stability, lightness, impact resistance, ability to be recycled, etc. which makes it attractive.
  • its low mechanical strength is currently only a complementary material when making subsets.
  • the present invention is thus likely to provide a vacuum cleaner, one of the external parts, in this case the cover, which requires a certain rigidity, strength and mechanical strength, is made of PPE, material that is not provided, originally, for this purpose.
  • EPP EPP for this member of the vacuum cleaner has, in addition to the advantages resulting from its intrinsic properties described above, the particularity of having an elastic memory, which also has significant advantages in terms of assembly of the cover on the frame of the device. Indeed, it is thus possible to articulate the lid without hinge and simply lock it by "forcing" the material to be deformed, the material resuming its shape after the deformation to maintain the assembly.
  • Such a lid therefore allows, in addition to a slight reduction in the weight of the entire vacuum cleaner, to provide good environmental protection during shocks in the use of the vacuum cleaner.
  • a mechanical reinforcement made by a rigid part, is then associated with the cover, in order to limit its deformation during operation of the vacuum cleaner.
  • the mechanical reinforcement consists of a rigid piece extending over substantially the width and / or length of the cover, or a frame made of a rigid material around which is injected polypropylene.
  • the reinforcement of the cover is supported on one or more walls from the frame, to limit the stress of the EPP constituting the cover.
  • the frame comprises a lower body and an upper body, the upper body being also made of expanded polypropylene, the lid bearing on said upper body.
  • body of the device is meant the visible outer part of the device, which can take various names: housing, shell, frame ....
  • the present invention dares to present essential constituent parts of the frame of the vacuum cleaner, requiring good mechanical properties, made of PPE.
  • the lower body is also made of expanded polypropylene.
  • the lower body is also made of expanded polypropylene.
  • polypropylene throughout the body of the vacuum cleaner.
  • Polypropylene can then be used in two forms: conventional polypropylene (PP) which is known for its lightness, and average mechanical performance, and expanded polypropylene (EPP).
  • PP polypropylene
  • EPP expanded polypropylene
  • homopolymers which are easy to recycle will be used.
  • the upper body comprises a mechanical reinforcement of certain walls delimiting the housing of the waste separation device.
  • the mechanical reinforcement consists of a rigid piece of generally U-shaped shape matching the bottom wall and two non-adjacent walls delimiting the housing of the waste separation device.
  • a hoop structure is simple in design and is sufficient to considerably reduce the risk of deformation of the walls, risks related to the depression generated by the engine, but may also result from external constraints (shocks, pressure related to certain uses, storage, ).
  • lid reinforcement consisting of a rigid piece extending over the width or the length of the lid and resting on the two U-shaped legs.
  • the figure 1 is a perspective view of a vacuum cleaner according to the present invention.
  • the figure 2 is an exploded view of the different main parts of the vacuum cleaner.
  • the figure 3 is an exploded view of some parts of the vacuum cleaner.
  • the figure 4 is a perspective view, from below, of the cover of the vacuum cleaner.
  • the figure 5 is a top view, in perspective, of the upper body of the vacuum cleaner.
  • the figure 6 is a perspective view of some parts of the vacuum cleaner.
  • a cover 80 is made of expanded polypropylene and is disposed on the upper body 4.
  • the mechanical strength of the cover on the upper body 4 of the vacuum cleaner is obtained by interlocking the peripheral rim 83 of the cover 80 in a groove 43 of the upper body 4, slightly deforming the material, as previously explained.
  • This lid allows the closure of the dust bag housing and directs air from the bag to the engine block.
  • this cover can receive, in its thickness, various suction accessories such as small brush, suction lolly, etc.
  • the cover 80 comprises a mechanical reinforcement, in the form of a cross member 82 preferably made of unexpanded polypropylene to reduce the diversity of plastics used. Any other material can also be used in the context of the present invention, as soon as the crossbar thus obtained has the required qualities of rigidity.
  • the electric fan motor creates a vacuum in the housing 40 of the dust bag of the order of 26 kPa, to generate an air intake by the insert 45 connection of the vacuum cleaner.
  • the cover 80 closing the housing of said dust bag is thus subjected to a suction force which requires a mechanical reinforcement to overcome the low mechanical strength of the EPP, and thus prevent a deflection of the cover which could lead to its rupture.
  • the lid Since the use of the EPP for producing the lid requires a relatively large thickness of material relative to the same unexpanded material, the lid will preferably be partially hollowed out from the shape of the cross-member so that the latter completely fits into the inner face of the lid, without additional rim. It may even be expected that this cross is inserted into force in the material, which facilitates its assembly and reduces associated costs.
  • the figure 4 shows that the cross is part of the thickness of the lid.
  • the material constituting the frame of the vacuum cleaner ie at least the upper body 4, and preferably also the lower body 2 and the rear part 50, is expanded polypropylene.
  • the rear piece 50 has an unexpanded PP core allowing the piece 50 to be mechanically resistant to a possible violent impact on said handle.
  • the side walls of the housing 40 of the upper body 4 have thicknesses varying from approximately 15 mm for the thickness a of the partition wall with the engine compartment, to more than 50 mm for the most important thickness c of the wall separating said housing with the outside.
  • the thickness of this wall is not constant over the entire height of the upper body. It is about halfway up, at the connection, by the insert 45 with the suction pipe, so that the tensile force, when moving the device, is well absorbed by the upper body .
  • the thickness b of this wall at the upper level of the body 4 is about 30 mm.
  • the figure 5 shows the zone 5 where the thickness of the wall of the upper body 4 is the largest. This thickness can even reach 60 mm at the level of the insert 45.
  • the latter by sandwiching the body 4 with the support 46 of the bag, creates, during the displacement of the vacuum, a tension important in the front part of the upper body, requiring a significant thickness of the wall at this level.
  • the cover has, meanwhile, a variable thickness. This thickness is of the order of 8 mm at the edge 83.
  • the thickness of the lid is greater at ribs 85 adjacent the housing of the part 82 reinforcement since it is of the order of 30 mm.
  • the cover 80 also has a protuberance 84 coming opposite the wall 44 separating the compartment 40 from the motor housing. This protuberance 84 limits the bending of the cover when the latter is physically deformed for any reason, for example an unfortunate support of the user on the cover.
  • the lid as well as the walls of the housing 40 of the filter bag for waste recovery, comprise reinforcing ribs from the molding of the various parts. Such ribs are areas of extra thickness that help to stiffen these parts.
  • the cover has ribs 85 which are extended by ribs 820 of the cross member 82.
  • the walls of the housing 40 of the upper body 4 also have ribs, such as the ribs 440 of the partition wall 44 with the engine compartment, and than the ribs 490 of the bottom wall 49.
  • the upper body 4 comprises a mechanical reinforcement of the side walls of the housing 40, in the form of a rigid piece 42 in the shape of a U, as shown in FIG. figure 3 .
  • this part is advantageously made of unexpanded polypropylene, in order to limit the diversity of the plastics used.
  • this part is advantageously made of unexpanded polypropylene, in order to limit the diversity of the plastics used.
  • This piece 42 thus has two vertical branches 420 connected by a spacer 422.
  • This piece 42 is disposed in the housing 40 by inserting into some walls delimiting said housing, like the cross member 82, in order to keep the inner continuity said walls.
  • the vertical branches 420 rest on the side walls 47, 48 of the housing 40, while the spacer 422 rests on the bottom wall 49.
  • the U-shaped piece 42 cooperates with the cross-member 82 of the lid in order to constitute a frame which strengthens the mechanical strength of the lid, as well as the holding of the lateral walls 47, 48.
  • the cross-member 82 bears on the free ends of the branches 420 of the reinforcement piece 42.
  • the ribs 490 of the bottom wall of the housing 40 are associated with ribs 423 of the spacer 422, to create continuity in the different ribs of the walls.
  • the ribs in addition to their role of reinforcement, also make it possible to create air circulation zones, between said ribs. Indeed, the bag, under the effect of the air circulation and the depression created by the motor, tends to come to press against some walls of the housing 40. The ribs then allow, containing the bag envelope , leaving air circulation channels out of the bag towards the engine compartment.
  • the high flexibility of the EPP allows for improved shock absorption compared to other plastics traditionally used to make vacuum cleaners.
  • This great flexibility is associated, depending on the degree of expansion, an elastic memory of the material, which also has significant advantages in terms of assembly of the different complementary parts fitted to the body of the device. Indeed, it is thus possible to articulate for example the different lids without hinge and simply lock them by deforming the material. This curious particularity also makes it possible to fix inserts, by interlocking, without difficulty.
  • the holding of the upper body on the lower body is provided by rods 12, 13 bearing under the lower body 2.
  • the rods 12 engage with the rear piece 50, while the rod 13 is connected to a rigid piece 90 arranged on the upper body 4.
  • the supports of the rods 12 and 13 under the lower body 2 are preferably associated with the wheels, not shown, of the vacuum cleaner.
  • the latter is associated with a platform 11 for refocusing the wheel relative to the entire vacuum cleaner.
  • the actual assembly of the upper body on the lower body consists, according to the example shown, in screwing the rods 12 and 13 into corresponding tubes from the parts 90 and 50, such as the tube 14, the tubes and / or the rods advantageously passing through a portion of the upper body 4.
  • the screwing thus makes it possible to compress, by means of the parts 90 and 50, the upper body on the lower body, the relatively large deformation of the PPE, as previously described, making it possible to seal between the lower and upper bodies, without a specific seal.
  • the rigid piece 90 also has locations for the on / off control button 60, in connection with an underlying switch, and the knob 68 for rewinding the electric cable on the reel.
  • the rigid piece 90 also has a housing 92 for a housing 94 containing a pleated filter HEPA type, for filtering the air from the dust bag, before entering the engine.
  • Indicators, actuators and actuators 60, 68, and the workpiece Rigid 90, the tubes 12, 13 and the wheels, will preferably be made of unexpanded polypropylene.
  • the motor will advantageously be arranged in a housing 120 of protection, advantageously consisting of rigid parts made of unexpanded polypropylene.
  • This casing consists of a cover 122 also having orifices 126 for air inlet, as well as a fairing substantially cylindrical 130, surrounding the motor and on which is fixed the cover 122 by a bayonet type assembly .
  • the fairing comprises a multitude of openings 132 of air exhaust, these openings, of cylindrical shape, having a diameter of the order of 2.5 mm.
  • a foam 134 is disposed in front of the openings 132, so that the air leaving the shroud 130 passes through such a foam before reaching the outlet 26 of the lower body 2.
  • This outlet is advantageously made opposite the openings 132 in order to extend the air circuit, which is favorable to the reduction of noise.
  • expanded polypropylene As far as expanded polypropylene is concerned, it will be used at degrees of expansion defined by the amount of material (polypropylene) per liter. It will be preferable to use contents of between 40 g and 80 g of material per liter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Suction Cleaners (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Electric Vacuum Cleaner (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
EP07356006A 2006-02-02 2007-01-23 Aspirateur avec un couvercle en polypropylène Active EP1815778B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07356006T PL1815778T3 (pl) 2006-02-02 2007-01-23 Odkurzacz z pokrywą z polipropylenu

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0600953A FR2896680B1 (fr) 2006-02-02 2006-02-02 Aspirateur

Publications (2)

Publication Number Publication Date
EP1815778A1 EP1815778A1 (fr) 2007-08-08
EP1815778B1 true EP1815778B1 (fr) 2012-05-02

Family

ID=36969190

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07356006A Active EP1815778B1 (fr) 2006-02-02 2007-01-23 Aspirateur avec un couvercle en polypropylène

Country Status (5)

Country Link
EP (1) EP1815778B1 (pl)
AT (1) ATE555703T1 (pl)
ES (1) ES2386983T3 (pl)
FR (1) FR2896680B1 (pl)
PL (1) PL1815778T3 (pl)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008041220A1 (de) * 2008-08-13 2010-02-18 BSH Bosch und Siemens Hausgeräte GmbH Staubsauger sowie Einlageteil eines Staubsaugers
ITPI20090056A1 (it) * 2009-05-08 2010-11-09 Gartec S R L Struttura di contenitore per liquidi

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2664244B2 (ja) * 1989-04-22 1997-10-15 タイガースポリマー株式会社 消音性ハウジング
US5479676A (en) * 1994-05-12 1996-01-02 Electrolux Corporation Vacuum cleaner
KR100433403B1 (ko) * 2002-01-31 2004-05-31 삼성광주전자 주식회사 업라이트형 진공청소기의 공기 유로구조
KR100565005B1 (ko) * 2004-02-26 2006-03-30 삼성광주전자 주식회사 진공청소기의 배기장치

Also Published As

Publication number Publication date
FR2896680A1 (fr) 2007-08-03
ATE555703T1 (de) 2012-05-15
FR2896680B1 (fr) 2008-06-06
EP1815778A1 (fr) 2007-08-08
PL1815778T3 (pl) 2012-10-31
ES2386983T3 (es) 2012-09-10

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