EP3626148B1 - Suction device for a home vacuum cleaner - Google Patents

Suction device for a home vacuum cleaner Download PDF

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Publication number
EP3626148B1
EP3626148B1 EP19191537.0A EP19191537A EP3626148B1 EP 3626148 B1 EP3626148 B1 EP 3626148B1 EP 19191537 A EP19191537 A EP 19191537A EP 3626148 B1 EP3626148 B1 EP 3626148B1
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EP
European Patent Office
Prior art keywords
annular
suction
annular sealing
suction device
aeraulic
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.)
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Application number
EP19191537.0A
Other languages
German (de)
French (fr)
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EP3626148A1 (en
Inventor
Fabien David
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SEB SA
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SEB SA
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Publication of EP3626148A1 publication Critical patent/EP3626148A1/en
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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
    • A47L9/22—Mountings for motor fan assemblies
    • 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
    • A47L9/0081—Means for exhaust-air diffusion; Means for sound or vibration damping
    • 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
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • 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 present invention relates to the field of household vacuum cleaners making it possible to suck up dust and waste of small particle size present on a surface to be cleaned, which may for example be tiles, parquet, laminate, carpet or a carpet.
  • Such a configuration of the aeraulic sealing element can induce, due to a lack of flexibility of the latter, a transfer of the vibrations generated by the suction motor to the housing of the domestic vacuum cleaner, which results in a significant increase in the noise generated by the household vacuum cleaner and therefore the discomfort suffered by the user when using such a household vacuum cleaner.
  • the present invention aims to remedy all or part of these drawbacks.
  • the objective of the present invention is in particular to provide a suction device which greatly limits a transfer of the vibrations generated by the suction motor to the housing of the household vacuum cleaner, while ensuring optimum suction performance for the device. aspiration.
  • Such a configuration of the aeraulic sealing element, and in particular the presence of the at least one radial fold and of the at least one annular fold, makes it possible to greatly limit the transfer of vibrations generated by the vacuum motor to the housing of the household vacuum cleaner.
  • the at least one radial fold makes it possible to increase the flexibility of the aeraulic sealing element in a tangential direction and therefore to significantly reduce the transfer, to the vacuum cleaner housing, of the vibrations generated by the electromagnetic forces.
  • the suction device may further have one or more of the following characteristics, taken alone or in combination.
  • the a somehowlic sealing element is in one piece.
  • the annular intermediate portion comprises a first tubular portion extending from the first annular sealing portion and in the direction of the suction motor, and a second tubular portion extending through from the second annular sealing portion and in a direction opposite to the suction motor, the first and second tubular portions being substantially concentric and being axially offset from one another.
  • the annular intermediate portion further comprises an annular connecting portion located between the first and second tubular portions and connecting the first and second tubular portions to one another so as to define the 'at least one annular fold.
  • the annular connecting portion connects the first and second tubular portions to one another so as to define two annular folds substantially concentric with the central axis of the sealing element. aeraulic, the two annular folds being oriented in two opposite directions.
  • Such a configuration of the connecting portion further increases the flexibility of the aeraulic sealing element and therefore further limits the transfer of vibrations generated by the vacuum motor to the housing of the household vacuum cleaner.
  • the annular intermediate portion has a longitudinal section generally Z-shaped.
  • At least part of the first tubular portion is located opposite the second tubular portion.
  • the first and second tubular portions overlap at least partially in an axial direction.
  • the second tubular portion is located radially inside the first tubular portion.
  • At least one radial fold is formed at least partially on the second tubular portion.
  • the at least one radial fold is formed at least partially on the second tubular portion and at least partially on the annular connection portion.
  • the at least one radial fold extends generally along a plane oriented radially with respect to the central axis of the aeraulic sealing element.
  • the annular intermediate portion comprises a plurality of radial folds which are oriented substantially radially with respect to the central axis of the aeraulic sealing element and which are angularly offset from each other and distributed around the central axis, and for example regularly distributed around the central axis.
  • each radial fold has a concave surface oriented towards the outside of the aeraulic sealing element and a convex surface oriented towards the inside of the aeraulic sealing element.
  • the first and second annular sealing portions are offset axially with respect to one another.
  • the second annular sealing portion extends around the air inlet opening.
  • the second annular sealing portion comprises an annular sealing lip configured to cooperate in a sealed manner with the suction motor.
  • the annular sealing lip extends transversely with respect to the central axis of the aeraulic sealing element.
  • the annular sealing lip comprises an annular sealing rib configured to cooperate in a sealed manner with the suction motor.
  • the annular sealing rib is provided at a peripheral edge of the annular sealing lip.
  • the annular sealing rib extends substantially parallel to the central axis of the aeraulic sealing element.
  • the second annular sealing portion comprises bearing ribs configured to bear against the suction motor, and for example against an external surface of the suction motor.
  • the bearing ribs extend around the air inlet opening from an annular sealing rib configured to cooperate in a sealed manner with the suction motor.
  • the support ribs are configured to distribute the pressure forces applied to the annular sealing rib when the suction motor is supplied and generates the suction flow.
  • the support ribs are configured to separate at least a portion of the annular sealing lip of the suction motor.
  • the support ribs extend substantially radially with respect to the central axis of the aeraulic sealing element.
  • the bearing ribs extend as far as the annular sealing rib or up to the proximity of the annular sealing rib.
  • the second annular sealing portion is configured to be pressed against and held in sealed manner against the suction motor when the suction motor is supplied and generates the suction flow.
  • the resultant of the forces applied to the second annular sealing portion is such that the second annular sealing portion is pressed and held in sealed manner against the suction motor.
  • the second annular sealing portion is configured to bear against the suction motor when the suction motor is stopped.
  • the second annular sealing portion has an outside diameter less than an outside diameter of the first annular sealing portion.
  • the first annular sealing portion is molded onto a front fairing of the engine casing.
  • the passage opening is provided on the front fairing.
  • the first annular sealing portion extends around the periphery of the passage opening.
  • the first annular sealing portion extends over a front face of the front fairing which is located opposite the suction motor.
  • the front fairing of the engine casing comprises a plurality of through holes which are angularly offset from each other and which are distributed around the opening of passage, the first annular sealing portion being molded onto the front fairing at the level of the through orifices.
  • each through orifice extends in an arc of a circle.
  • the through orifices are aligned circumferentially.
  • the front fairing comprises a retaining part on which the first annular sealing portion is overmolded, the retaining part comprising an annular retaining ring which defines the passage opening and which is connected to a main body of the front fairing by connecting lugs, the connecting lugs extending radially and being angularly spaced from each other so as to form, with the annular retaining ring and the main body of the front fairing, the through holes.
  • the first annular sealing portion is further configured to cooperate in a sealed manner with the housing of the vacuum cleaner.
  • the first annular sealing portion comprises an annular sealing protuberance extending around the passage opening and configured to cooperate in a sealed manner with the housing of the vacuum cleaner.
  • the annular sealing protrusion projects away from the suction motor.
  • the annular sealing protuberance covers the through orifices.
  • the annular sealing protuberance has a domed front profile and a rear profile at least locally having a hollow shape.
  • Such a hollow-shaped rear profile makes it possible to reduce the thickness of the wall forming the annular sealing protuberance, which has the advantage of increasing the flexibility of the annular sealing protrusion.
  • the annular sealing protrusion comprises an annular wall which is curved.
  • the annular wall comprises a first curved annular surface which is concave and oriented towards the suction motor and a second curved annular surface which is convex and oriented away from the suction motor, and for example towards a wall of separation belonging to the vacuum cleaner housing.
  • annular sealing protuberance makes it possible to obtain more flexibility in the direction of the axis of the suction motor in order to guarantee optimum sealing by absorbing the clearances between the motor housing and the housing. of the household vacuum cleaner.
  • the annular wall can be particularly thin, which makes it possible to use a material having a higher hardness to manufacture the aeraulic sealing element and therefore to ensure better sliding of the latter during its assembly by shearing. .
  • the annular sealing protuberance further comprises a plurality of connecting walls which are angularly offset from each other and which are distributed around the passage opening, each connecting wall s 'extending from the first curved annular surface.
  • the suction motor comprises a fan and an electric motor configured to drive the fan in rotation.
  • the suction motor further comprises a fan cover at least partially covering the fan, the air inlet opening being provided on the fan cover.
  • the suction device comprises a suspension system configured to support the suction motor.
  • the suspension system may include a plurality of damping elements disposed around the perimeter of the vacuum motor and connected to the motor housing.
  • each damping element has a generally S-shaped cross section.
  • the suspension system further comprises at least one compensation spring configured to compensate for the weight of the suction motor.
  • a compensation spring makes it possible in particular to keep the suction motor in "levitation” so that the damping elements can work in the same way and therefore ensure an appropriate centering of the suction motor with respect to the housing of the pump. 'aspirator.
  • the a somehowlic sealing element is made of elastomer.
  • the present invention further relates to a domestic vacuum cleaner comprising a suction device according to any one of the preceding characteristics.
  • the domestic vacuum cleaner comprises a housing comprising a filtration compartment and an engine compartment separated by a partition wall, the first annular sealing portion being configured to cooperate in a sealed manner with the wall. of seperation.
  • the a Vogellic sealing element is configured to guide the suction flow generated by the suction motor from the communication port to the air inlet opening.
  • the present invention also relates to an aeraulic sealing element for a suction device, the aunterlic sealing element being configured to guide a suction flow from a passage opening provided on a motor casing to an opening of the motor. air inlet of a suction motor, the aunterlic sealing element being annular and flexible, the sealing element aunterlic comprising a first annular sealing portion configured to cooperate in a sealed manner with the motor housing, a second annular sealing portion configured to cooperate in a sealed manner with the suction motor, and an annular intermediate portion located between the first and second annular sealing portions, characterized in that the annular intermediate portion comprises at least one radial fold oriented substantially radially with respect to a central axis of the aunterlic sealing element, and at least one annular fold substantially concentric with the central axis of the aunterlic sealing element.
  • the figures 1 to 10 show a domestic vacuum cleaner 2 comprising in particular a housing 3, also vacuum cleaner body, comprising in known manner a filtration compartment 4 and an engine compartment 5 separated by a partition wall 6 provided with a communication orifice 7.
  • the filter compartment filtration 4 is intended to receive a filtration device (not shown in the figures), such as a filtration bag or a cyclonic separation device, making it possible to retain the waste sucked into the housing 3.
  • the housing 3 also comprises an air inlet 8 through which air transporting waste is sucked into the housing 3, and an air outlet 9 through which the air previously cleared of waste by the filtration device is discharged. outside the housing 3.
  • the housing 3 is advantageously equipped with wheels 11 to ensure the movement of the domestic vacuum cleaner 2.
  • the domestic vacuum cleaner 2 can also include a flexible hose (not shown in the figures) connected, preferably removably, to the air inlet 8 of the housing 3, and a suction accessory (not shown in the figures ) such as, for example, a rigid telescopic tube which can receive, at its end opposite the flexible pipe, a removable suction head.
  • a flexible hose (not shown in the figures) connected, preferably removably, to the air inlet 8 of the housing 3
  • a suction accessory such as, for example, a rigid telescopic tube which can receive, at its end opposite the flexible pipe, a removable suction head.
  • the domestic vacuum cleaner 2 further comprises a suction device 12 housed in the engine compartment 5.
  • the suction device 12 comprises a motor casing 13.
  • the motor casing 13 comprises a front fairing 13.1 and a rear fairing 13.2 assembled to one another, for example by screwing or snapping, and a passage opening 14 made on the front fairing 13.1.
  • the suction device 12 further comprises a suction motor 15, also called motor-fan, arranged in the motor housing 13 and configured to generate a suction flow.
  • the suction motor 15 comprises a fan and an electric motor configured to drive the fan in rotation.
  • the suction motor 15 may comprise in in addition to a fan cover 16 at least partially covering the fan and defining an air inlet opening 17.
  • the suction device 12 also comprises an aeraulic sealing element 18 which is in one piece and which is configured to guide the suction flow from the passage opening 14 to the air inlet opening 17.
  • the a Vogellic sealing element 18 is annular and flexible, and comprises a first annular sealing portion 19 configured to cooperate in a sealed manner with the motor housing 13, a second annular sealing portion 21 configured to cooperate in such a manner sealed with the suction motor 15, and an annular intermediate portion 22 located between the first and second annular sealing portions 19, 21.
  • the first and second annular sealing portions 19, 21 are axially offset. 'one in relation to the other.
  • the first annular sealing portion 19 extends around the periphery of the passage opening 14 and is molded onto the front fairing 13.1 of the engine casing 13.
  • the first annular sealing portion 19 extends over a front face of the front fairing 13.1 which is located opposite the suction motor 15.
  • the front fairing 13.1 comprises a retaining part 23 on which is molded the first annular sealing portion 19.
  • the retaining part 23 advantageously comprises an annular retaining ring 24 which defines the passage opening 14 and which is connected to a main body 25 of the front fairing 13.1 by connecting lugs 26.
  • the connecting lugs 26 extend radially and are angularly spaced from each other so as to form, with the annular retaining ring 24 and the main body 25 of the front fairing 13.1, through orifices 27 which are angularly offset from one another and which are distributed around the passage opening 14.
  • the through orifices 27 extend in an arc of a circle and are aligned circumferentially.
  • the first annular sealing portion 19 has an annular sealing protrusion 28 extending around the passage opening 14 and projecting away from the suction motor 15.
  • the annular sealing protrusion 28 is configured to extend around the communication orifice 7 and to cooperate in a sealed manner with the partition wall 6.
  • the annular sealing protrusion 28 covers the through orifices 27.
  • the annular sealing protrusion 28 includes an annular wall 29 which is thin and which is curved.
  • the annular wall 29 has a first curved annular surface 29.1 which is concave and oriented towards the suction motor 15 and a second curved annular surface 29.2 which is convex and oriented away from the suction motor 15, that is, i.e. towards the partition wall 6.
  • the annular sealing protrusion 28 further comprises a plurality of connecting walls 31 which are angularly offset from each other and which are distributed around the passage opening 14.
  • Each connecting wall 31 extends from the first curved annular surface 29.1 and facing a respective connecting tab 26, and is fixed by overmolding to the latter.
  • each connecting wall 31 advantageously extends radially.
  • the second annular sealing portion 21 extends around the air inlet opening 17 and has an outside diameter smaller than an outside diameter of the first annular sealing portion 19.
  • the second annular sealing portion 21 more particularly comprises an annular sealing lip 32 which extends transversely with respect to the central axis A of the aeraulic sealing element 18 and which is configured to cooperate in a sealed manner with the suction motor 15, and more particularly with the fan cover 16.
  • the annular sealing lip 32 is configured to bear against the suction motor 15 when the suction motor 15 is stopped, and to be pressed against and held in sealing manner against the suction motor 15. when the suction motor 15 is energized and generates the suction flow. In other words, when the suction motor 15 is energized and generates the suction flow, the resultant of the forces applied to the annular sealing lip 32 is such that the annular sealing lip 32 is pressed. and held in sealed manner against the suction motor 15.
  • the annular sealing lip 32 comprises an annular sealing rib 33 configured to cooperate in a sealed manner with the suction motor 15.
  • the annular sealing rib 33 is advantageously provided at the bottom. level with a peripheral edge of the annular sealing lip 32, and extends substantially parallel to the central axis A of the aeraulic sealing element 18.
  • the second annular sealing portion 21 further comprises bearing ribs 34 configured to bear against the suction motor 15, and for example against an outer surface of the fan cover 16.
  • the ribs d 'support 34 extend around the air inlet opening 17 and extend radially relative to the central axis A of the aeraulic sealing element 18.
  • the support ribs 34 are more particularly configured to distribute the pressure forces applied to the annular sealing rib 33 when the suction motor 15 is energized and generates the suction flow. According to the embodiment shown in the figures, the support ribs 34 extend as far as the annular sealing rib 33.
  • the annular intermediate portion 22 of the a Vogellic sealing element 18 comprises a first tubular portion 35 extending from the first annular sealing portion 19 and in the direction of the suction motor 15, and a second tubular portion 36 extending from the second annular sealing portion 21 and away from the suction motor 15.
  • the first and second tubular portions 35, 36 are concentric with the central axis A of the element. air-tightness 18 and are offset axially with respect to one another.
  • the second tubular portion 36 is located radially inside the first tubular portion 35, and the first and second Tubular portions 35, 36 partially overlap in an axial direction.
  • the annular intermediate portion 22 further comprises an annular connecting portion 37 located between the first and second tubular portions 35, 36 and connecting the first and second tubular portions 35, 36 to one another so as to define two annular folds 38, 39 concentric with the central axis A of the aeraulic sealing element 18.
  • the two annular folds 38, 39 are advantageously oriented in two opposite directions, such that the annular intermediate portion 22 has a longitudinal section generally in Z shape.
  • the annular intermediate portion 22 also comprises a plurality of radial folds 41 which are oriented substantially radially with respect to the central axis A of the aeraulic sealing element 18, and which s' each advantageously extend generally along a plane oriented radially with respect to the central axis A.
  • the radial folds 41 are angularly offset from each other and are advantageously regularly distributed around the central axis A.
  • Each radial fold 41 advantageously comprises a concave surface 41.1 oriented towards the outside of the aeraulic sealing element 18 and a convex surface 41.2 oriented towards the inside of the aeraulic sealing element 18.
  • each radial fold 41 is advantageously provided partially on the second tubular portion 36 and partially on the annular connection portion 37.
  • the suction device 12 further comprises (see in particular the figures 9 and 10 ) a suspension system 43 configured to support the suction motor 15.
  • the suspension system 43 more particularly comprises a support piece 44 fixed to the suction motor 15, and a plurality of damping elements 45 interposed between the support piece 44 and the motor housing 13 and distributed around the suction motor 15.
  • the support part 44 may for example comprise an annular support part 44.1 extending around the suction motor 15, a rear part 44.2 extending at the rear of the suction motor 15 and connecting branches 44.3 extending longitudinally and connecting the annular support part 44.1 to the rear part 44.2.
  • the support piece 44 can thus define a housing in which the suction motor 15 is mounted.
  • each damping element 45 has a generally S-shaped cross section, and comprises a first fixing part 45.1 fixed to the engine casing 13, for example to the rear fairing 13.2, and a second fixing part 45.2 fixed to the support piece 44.
  • the suspension system 43 may for example include four damping elements 45 regularly distributed around the suction motor 15.
  • the suspension system 43 further comprises a compensation spring 46 configured to compensate for the weight of the suction motor 15.
  • the compensation spring 46 may for example be located above the motor. suction 15 and be formed by a tension spring. According to an alternative embodiment, the compensation spring 46 could be located below the suction motor 15 and be formed by a compression spring.
  • the compensation spring 46 is more particularly interposed between the support piece 44 and the engine casing 13.
  • the compensation spring 46 advantageously comprises a first end portion 46.1 fixed to the engine casing 13, for example to the rear fairing. 13.2, and a second end portion 46.2 fixed to the support piece 44.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Food-Manufacturing Devices (AREA)

Description

Domaine techniqueTechnical area

La présente invention concerne le domaine des aspirateurs domestiques permettant d'aspirer des poussières et des déchets de faible granulométrie présents sur une surface à nettoyer, qui peut par exemple être du carrelage, du parquet, du stratifié, de la moquette ou un tapis.The present invention relates to the field of household vacuum cleaners making it possible to suck up dust and waste of small particle size present on a surface to be cleaned, which may for example be tiles, parquet, laminate, carpet or a carpet.

Etat de la techniqueState of the art

Un aspirateur domestique comporte de façon connue :

  • un boîtier comportant un compartiment de filtration et un compartiment moteur séparés par une paroi de séparation pourvue d'un orifice de communication, et
  • un dispositif d'aspiration logé dans le compartiment moteur, le dispositif d'aspiration comprenant un carter de moteur comprenant une ouverture de passage ; un moteur d'aspiration disposé dans le carter de moteur et configuré pour générer un flux d'aspiration, le moteur d'aspiration comprenant une ouverture d'entrée d'air ; et un élément d'étanchéité aéraulique configuré pour guider le flux d'aspiration depuis l'orifice de communication jusqu'à l'ouverture d'entrée d'air, l'élément d'étanchéité aéraulique étant annulaire et flexible, l'élément d'étanchéité aéraulique comprenant une première portion d'étanchéité annulaire configurée pour coopérer de manière étanche avec le carter de moteur, une deuxième portion d'étanchéité annulaire configurée pour coopérer de manière étanche avec le moteur d'aspiration, et une portion intermédiaire annulaire située entre les première et deuxième portions d'étanchéité annulaires. Le document WO 2010/051930 A1 décrit un élément d'étanchéité et un dispositif d'aspiration comprenant un tel élément d'étanchéité selon le préambule des revendications indépendantes 1 et 18.
A household vacuum cleaner comprises in a known manner:
  • a housing comprising a filtration compartment and an engine compartment separated by a partition wall provided with a communication port, and
  • a suction device housed in the engine compartment, the suction device comprising an engine housing including a passage opening; a vacuum motor disposed in the motor housing and configured to generate a suction flow, the vacuum motor including an air inlet opening; and an aeraulic sealing element configured to guide the suction flow from the communication port to the air inlet opening, the aeraulic sealing element being annular and flexible, the element d 'aeraulic seal comprising a first annular sealing portion configured to cooperate in a sealed manner with the motor housing, a second annular sealing portion configured to cooperate in a sealed manner with the suction motor, and an annular intermediate portion located between the first and second annular sealing portions. The document WO 2010/051930 A1 discloses a sealing element and a suction device comprising such a sealing element according to the preamble of independent claims 1 and 18.

Une telle configuration de l'élément d'étanchéité aéraulique peut induire, du fait d'un manque de souplesse de ce dernier, un transfert des vibrations générées par le moteur d'aspiration au boîtier de l'aspirateur domestique, ce qui se traduit par une augmentation sensible du bruit généré par l'aspirateur domestique et donc de l'inconfort subi par l'utilisateur lors de l'utilisation d'un tel aspirateur domestique.Such a configuration of the aeraulic sealing element can induce, due to a lack of flexibility of the latter, a transfer of the vibrations generated by the suction motor to the housing of the domestic vacuum cleaner, which results in a significant increase in the noise generated by the household vacuum cleaner and therefore the discomfort suffered by the user when using such a household vacuum cleaner.

Résumé de l'inventionSummary of the invention

La présente invention vise à remédier à tout ou partie de ces inconvénients.The present invention aims to remedy all or part of these drawbacks.

L'objectif de la présente invention consiste notamment à fournir un dispositif d'aspiration qui limite grandement un transfert des vibrations générées par le moteur d'aspiration au boîtier de l'aspirateur domestique, tout en garantissant des performances d'aspiration optimales au dispositif d'aspiration.The objective of the present invention is in particular to provide a suction device which greatly limits a transfer of the vibrations generated by the suction motor to the housing of the household vacuum cleaner, while ensuring optimum suction performance for the device. aspiration.

A cet effet, la présente invention concerne un dispositif d'aspiration pour aspirateur domestique, comprenant :

  • un carter de moteur comprenant une ouverture de passage,
  • un moteur d'aspiration disposé dans le carter de moteur et configuré pour générer un flux d'aspiration, le moteur d'aspiration comprenant une ouverture d'entrée d'air, et
  • un élément d'étanchéité aéraulique configuré pour guider le flux d'aspiration depuis l'ouverture de passage jusqu'à l'ouverture d'entrée d'air, l'élément d'étanchéité aéraulique étant annulaire et flexible, l'élément d'étanchéité aéraulique comprenant une première portion d'étanchéité annulaire configurée pour coopérer de manière étanche avec le carter de moteur, une deuxième portion d'étanchéité annulaire configurée pour coopérer de manière étanche avec le moteur d'aspiration, et une portion intermédiaire annulaire située entre les première et deuxième portions d'étanchéité annulaires,
caractérisé en ce que la portion intermédiaire annulaire comporte au moins un pli radial orienté sensiblement radialement par rapport à un axe central de l'élément d'étanchéité aéraulique, et au moins un pli annulaire sensiblement concentrique avec l'axe central de l'élément d'étanchéité aéraulique.To this end, the present invention relates to a suction device for a household vacuum cleaner, comprising:
  • an engine casing comprising a passage opening,
  • a vacuum motor disposed in the motor housing and configured to generate a suction flow, the vacuum motor including an air inlet opening, and
  • an aeraulic sealing element configured to guide the suction flow from the passage opening to the air inlet opening, the aeraulic sealing element being annular and flexible, the element of aeraulic seal comprising a first annular sealing portion configured to cooperate in a sealed manner with the motor housing, a second annular sealing portion configured to cooperate in a sealed manner with the suction motor, and an annular intermediate portion located between the first and second annular sealing portions,
characterized in that the annular intermediate portion comprises at least one radial fold oriented substantially radially with respect to a central axis of the aeraulic sealing element, and at least one annular fold substantially concentric with the central axis of the element d airtightness.

Une telle configuration de l'élément d'étanchéité aéraulique, et en particulier la présence de l'au moins un pli radial et de l'au moins un pli annulaire, permet de limiter grandement le transfert des vibrations générées par le moteur d'aspiration au boîtier de l'aspirateur domestique. En effet, l'au moins un pli radial permet d'augmenter la souplesse de l'élément d'étanchéité aéraulique dans une direction tangentielle et donc de réduire sensiblement le transfert, au boîtier de l'aspirateur, des vibrations générées par les forces électromagnétiques engendrées par le fonctionnement du moteur d'aspiration et les interactions entre le rotor et le stator du moteur d'aspiration, tandis que l'au moins un pli annulaire permet d'augmenter la souplesse de l'élément d'étanchéité aéraulique dans une direction radiale et donc de réduire sensiblement le transfert, au boîtier de l'aspirateur, des vibrations générées par le balourd du moteur d'aspiration.Such a configuration of the aeraulic sealing element, and in particular the presence of the at least one radial fold and of the at least one annular fold, makes it possible to greatly limit the transfer of vibrations generated by the vacuum motor to the housing of the household vacuum cleaner. Indeed, the at least one radial fold makes it possible to increase the flexibility of the aeraulic sealing element in a tangential direction and therefore to significantly reduce the transfer, to the vacuum cleaner housing, of the vibrations generated by the electromagnetic forces. generated by the operation of the suction motor and the interactions between the rotor and the stator of the suction motor, while the at least one annular fold makes it possible to increase the flexibility of the aeraulic sealing element in one direction radial and therefore significantly reduce the transfer, to the housing of the vacuum cleaner, vibrations generated by the unbalance of the vacuum motor.

Le dispositif d'aspiration peut en outre présenter une ou plusieurs des caractéristiques suivantes, prises seules ou en combinaison.The suction device may further have one or more of the following characteristics, taken alone or in combination.

Selon un mode de réalisation de l'invention, l'élément d'étanchéité aéraulique est monobloc.According to one embodiment of the invention, the aeraulic sealing element is in one piece.

Selon un mode de réalisation de l'invention, la portion intermédiaire annulaire comporte une première portion tubulaire s'étendant à partir de la première portion d'étanchéité annulaire et en direction du moteur d'aspiration, et une deuxième portion tubulaire s'étendant à partir de la deuxième portion d'étanchéité annulaire et dans une direction opposée au moteur d'aspiration, les première et deuxième portions tubulaires étant sensiblement concentriques et étant décalées axialement l'une par rapport à l'autre.According to one embodiment of the invention, the annular intermediate portion comprises a first tubular portion extending from the first annular sealing portion and in the direction of the suction motor, and a second tubular portion extending through from the second annular sealing portion and in a direction opposite to the suction motor, the first and second tubular portions being substantially concentric and being axially offset from one another.

Selon un mode de réalisation de l'invention, la portion intermédiaire annulaire comporte en outre une portion de liaison annulaire située entre les première et deuxième portions tubulaires et reliant les première et deuxième portions tubulaires l'une à l'autre de manière à définir l'au moins un pli annulaire.According to one embodiment of the invention, the annular intermediate portion further comprises an annular connecting portion located between the first and second tubular portions and connecting the first and second tubular portions to one another so as to define the 'at least one annular fold.

Selon un mode de réalisation de l'invention, la portion de liaison annulaire relie les première et deuxième portions tubulaires l'une à l'autre de manière à définir deux plis annulaires sensiblement concentriques avec l'axe central de l'élément d'étanchéité aéraulique, les deux plis annulaires étant orientés dans deux directions opposées. Une telle configuration de la portion de liaison augmente encore la souplesse de l'élément d'étanchéité aéraulique et limite donc encore le transfert des vibrations générées par le moteur d'aspiration au boîtier de l'aspirateur domestique.According to one embodiment of the invention, the annular connecting portion connects the first and second tubular portions to one another so as to define two annular folds substantially concentric with the central axis of the sealing element. aeraulic, the two annular folds being oriented in two opposite directions. Such a configuration of the connecting portion further increases the flexibility of the aeraulic sealing element and therefore further limits the transfer of vibrations generated by the vacuum motor to the housing of the household vacuum cleaner.

Selon un mode de réalisation de l'invention, la portion intermédiaire annulaire présente une section longitudinale globalement en forme de Z.According to one embodiment of the invention, the annular intermediate portion has a longitudinal section generally Z-shaped.

Selon un mode de réalisation de l'invention, au moins une partie de la première portion tubulaire est située en regard de la deuxième portion tubulaire. En d'autres termes, les première et deuxième portions tubulaires se chevauchent au moins partiellement selon une direction axiale.According to one embodiment of the invention, at least part of the first tubular portion is located opposite the second tubular portion. In other words, the first and second tubular portions overlap at least partially in an axial direction.

Selon un mode de réalisation de l'invention, la deuxième portion tubulaire est située radialement à l'intérieur de la première portion tubulaire.According to one embodiment of the invention, the second tubular portion is located radially inside the first tubular portion.

Selon un mode de réalisation de l'invention, l'au moins un pli radial est ménagé au moins partiellement sur la deuxième portion tubulaire.According to one embodiment of the invention, at least one radial fold is formed at least partially on the second tubular portion.

Selon un mode de réalisation de l'invention, l'au moins un pli radial est ménagé au moins partiellement sur la deuxième portion tubulaire et au moins partiellement sur la portion de liaison annulaire.According to one embodiment of the invention, the at least one radial fold is formed at least partially on the second tubular portion and at least partially on the annular connection portion.

Selon un mode de réalisation de l'invention, l'au moins un pli radial s'étend globalement selon un plan orienté radialement par rapport à l'axe central de l'élément d'étanchéité aéraulique.According to one embodiment of the invention, the at least one radial fold extends generally along a plane oriented radially with respect to the central axis of the aeraulic sealing element.

Selon un mode de réalisation de l'invention, la portion intermédiaire annulaire comporte une pluralité de plis radiaux qui sont orientés sensiblement radialement par rapport à l'axe central de l'élément d'étanchéité aéraulique et qui sont décalés angulairement les uns des autres et répartis autour de l'axe central, et par exemple régulièrement répartis autour de l'axe central.According to one embodiment of the invention, the annular intermediate portion comprises a plurality of radial folds which are oriented substantially radially with respect to the central axis of the aeraulic sealing element and which are angularly offset from each other and distributed around the central axis, and for example regularly distributed around the central axis.

Selon un mode de réalisation de l'invention, chaque pli radial comporte une surface concave orientée vers l'extérieur de l'élément d'étanchéité aéraulique et une surface convexe orientée vers l'intérieur de l'élément d'étanchéité aéraulique.According to one embodiment of the invention, each radial fold has a concave surface oriented towards the outside of the aeraulic sealing element and a convex surface oriented towards the inside of the aeraulic sealing element.

Selon un mode de réalisation de l'invention, les première et deuxième portions d'étanchéité annulaires sont décalées axialement l'une par rapport à l'autre. Selon un mode de réalisation de l'invention, la deuxième portion d'étanchéité annulaire s'étend autour de l'ouverture d'entrée d'air.According to one embodiment of the invention, the first and second annular sealing portions are offset axially with respect to one another. According to one embodiment of the invention, the second annular sealing portion extends around the air inlet opening.

Selon un mode de réalisation de l'invention, la deuxième portion d'étanchéité annulaire comporte une lèvre d'étanchéité annulaire configurée pour coopérer de manière étanche avec le moteur d'aspiration.According to one embodiment of the invention, the second annular sealing portion comprises an annular sealing lip configured to cooperate in a sealed manner with the suction motor.

Selon un mode de réalisation de l'invention, la lèvre d'étanchéité annulaire s'étend transversalement par rapport à l'axe central de l'élément d'étanchéité aéraulique.According to one embodiment of the invention, the annular sealing lip extends transversely with respect to the central axis of the aeraulic sealing element.

Selon un mode de réalisation de l'invention, la lèvre d'étanchéité annulaire comporte une nervure d'étanchéité annulaire configurée pour coopérer de manière étanche avec le moteur d'aspiration.According to one embodiment of the invention, the annular sealing lip comprises an annular sealing rib configured to cooperate in a sealed manner with the suction motor.

Selon un mode de réalisation de l'invention, la nervure d'étanchéité annulaire est ménagée au niveau d'un bord périphérique de la lèvre d'étanchéité annulaire. Avantageusement, la nervure d'étanchéité annulaire s'étend sensiblement parallèlement à l'axe central de l'élément d'étanchéité aéraulique.According to one embodiment of the invention, the annular sealing rib is provided at a peripheral edge of the annular sealing lip. Advantageously, the annular sealing rib extends substantially parallel to the central axis of the aeraulic sealing element.

Selon un mode de réalisation de l'invention, la deuxième portion d'étanchéité annulaire comporte des nervures d'appui configurées pour prendre appui contre le moteur d'aspiration, et par exemple contre une surface externe du moteur d'aspiration.According to one embodiment of the invention, the second annular sealing portion comprises bearing ribs configured to bear against the suction motor, and for example against an external surface of the suction motor.

Selon un mode de réalisation de l'invention, les nervures d'appui s'étendent autour de l'ouverture d'entrée d'air depuis une nervure d'étanchéité annulaire configurée pour coopérer de manière étanche avec le moteur d'aspiration.According to one embodiment of the invention, the bearing ribs extend around the air inlet opening from an annular sealing rib configured to cooperate in a sealed manner with the suction motor.

Selon un mode de réalisation de l'invention, les nervures d'appui sont configurées pour répartir les forces de pression appliquées sur la nervure d'étanchéité annulaire lorsque le moteur d'aspiration est alimenté et génère le flux d'aspiration.According to one embodiment of the invention, the support ribs are configured to distribute the pressure forces applied to the annular sealing rib when the suction motor is supplied and generates the suction flow.

Selon un mode de réalisation de l'invention, les nervures d'appui sont configurées pour écarter au moins une portion de la lèvre d'étanchéité annulaire du moteur d'aspiration.According to one embodiment of the invention, the support ribs are configured to separate at least a portion of the annular sealing lip of the suction motor.

Selon un mode de réalisation de l'invention, les nervures d'appui s'étendent sensiblement radialement par rapport à l'axe central de l'élément d'étanchéité aéraulique.According to one embodiment of the invention, the support ribs extend substantially radially with respect to the central axis of the aeraulic sealing element.

Selon un mode de réalisation de l'invention, les nervures d'appui s'étendent jusqu'à la nervure d'étanchéité annulaire ou jusqu'à proximité de la nervure d'étanchéité annulaire.According to one embodiment of the invention, the bearing ribs extend as far as the annular sealing rib or up to the proximity of the annular sealing rib.

Selon un mode de réalisation de l'invention, la deuxième portion d'étanchéité annulaire est configurée pour être plaquée et maintenue en appui de manière étanche contre le moteur d'aspiration lorsque le moteur d'aspiration est alimenté et génère le flux d'aspiration. En d'autres termes, lorsque le moteur d'aspiration est alimenté et génère le flux d'aspiration, la résultante des forces s'appliquant sur la deuxième portion d'étanchéité annulaire est telle que la deuxième portion d'étanchéité annulaire est plaquée et maintenue en appui de manière étanche contre le moteur d'aspiration.According to one embodiment of the invention, the second annular sealing portion is configured to be pressed against and held in sealed manner against the suction motor when the suction motor is supplied and generates the suction flow. . In other words, when the suction motor is energized and generates the suction flow, the resultant of the forces applied to the second annular sealing portion is such that the second annular sealing portion is pressed and held in sealed manner against the suction motor.

Selon un mode de réalisation de l'invention, la deuxième portion d'étanchéité annulaire est configurée pour prendre appui contre le moteur d'aspiration lorsque le moteur d'aspiration est à l'arrêt.According to one embodiment of the invention, the second annular sealing portion is configured to bear against the suction motor when the suction motor is stopped.

Selon un mode de réalisation de l'invention, la deuxième portion d'étanchéité annulaire présente un diamètre extérieur inférieur à un diamètre extérieur de la première portion d'étanchéité annulaire.According to one embodiment of the invention, the second annular sealing portion has an outside diameter less than an outside diameter of the first annular sealing portion.

Selon un mode de réalisation de l'invention, la première portion d'étanchéité annulaire est surmoulée sur un carénage avant du carter de moteur.According to one embodiment of the invention, the first annular sealing portion is molded onto a front fairing of the engine casing.

Selon un mode de réalisation de l'invention, l'ouverture de passage est prévue sur le carénage avant.According to one embodiment of the invention, the passage opening is provided on the front fairing.

Selon un mode de réalisation de l'invention, la première portion d'étanchéité annulaire s'étend sur le pourtour de l'ouverture de passage. De façon avantageuse, la première portion d'étanchéité annulaire s'étend sur une face avant du carénage avant qui est située à l'opposé du moteur d'aspiration.According to one embodiment of the invention, the first annular sealing portion extends around the periphery of the passage opening. Advantageously, the first annular sealing portion extends over a front face of the front fairing which is located opposite the suction motor.

Selon un mode de réalisation de l'invention, le carénage avant du carter de moteur comporte une pluralité d'orifices traversants qui sont décalés angulairement les uns des autres et qui sont répartis autour de l'ouverture de passage, la première portion d'étanchéité annulaire étant surmoulée sur le carénage avant au niveau des orifices traversants. De façon avantageuse, chaque orifice traversant s'étend en arc de cercle.According to one embodiment of the invention, the front fairing of the engine casing comprises a plurality of through holes which are angularly offset from each other and which are distributed around the opening of passage, the first annular sealing portion being molded onto the front fairing at the level of the through orifices. Advantageously, each through orifice extends in an arc of a circle.

Selon un mode de réalisation de l'invention, les orifices traversants sont alignés circonférentiellement.According to one embodiment of the invention, the through orifices are aligned circumferentially.

Selon un mode de réalisation de l'invention, le carénage avant comporte une partie de maintien sur laquelle est surmoulée la première portion d'étanchéité annulaire, la partie de maintien comportant une bague de maintien annulaire qui définit l'ouverture de passage et qui est reliée à un corps principal du carénage avant par des pattes de liaison, les pattes de liaison s'étendant radialement et étant espacées angulairement les unes des autres de manière à former, avec la bague de maintien annulaire et le corps principal du carénage avant, les orifices traversants.According to one embodiment of the invention, the front fairing comprises a retaining part on which the first annular sealing portion is overmolded, the retaining part comprising an annular retaining ring which defines the passage opening and which is connected to a main body of the front fairing by connecting lugs, the connecting lugs extending radially and being angularly spaced from each other so as to form, with the annular retaining ring and the main body of the front fairing, the through holes.

Selon un mode de réalisation de l'invention, la première portion d'étanchéité annulaire est en outre configurée pour coopérer de manière étanche avec le boîtier de l'aspirateur.According to one embodiment of the invention, the first annular sealing portion is further configured to cooperate in a sealed manner with the housing of the vacuum cleaner.

Selon un mode de réalisation de l'invention, la première portion d'étanchéité annulaire comporte une protubérance d'étanchéité annulaire s'étendant autour de l'ouverture de passage et configurée pour coopérer de manière étanche avec le boîtier de l'aspirateur. De façon avantageuse, la protubérance d'étanchéité annulaire fait saillie à l'opposé du moteur d'aspiration.According to one embodiment of the invention, the first annular sealing portion comprises an annular sealing protuberance extending around the passage opening and configured to cooperate in a sealed manner with the housing of the vacuum cleaner. Advantageously, the annular sealing protrusion projects away from the suction motor.

Selon un mode de réalisation de l'invention, la protubérance d'étanchéité annulaire recouvre les orifices traversants.According to one embodiment of the invention, the annular sealing protuberance covers the through orifices.

Selon un mode de réalisation de l'invention, la protubérance d'étanchéité annulaire présente un profil avant bombé et un profil arrière présentant au moins localement une forme en creux.According to one embodiment of the invention, the annular sealing protuberance has a domed front profile and a rear profile at least locally having a hollow shape.

Un tel profil arrière en forme de creux permet de réduire l'épaisseur de la paroi formant la protubérance d'étanchéité annulaire, ce qui présente l'avantage d'augmenter la souplesse de la protubérance d'étanchéité annulaire.Such a hollow-shaped rear profile makes it possible to reduce the thickness of the wall forming the annular sealing protuberance, which has the advantage of increasing the flexibility of the annular sealing protrusion.

Selon un mode de réalisation de l'invention, la protubérance d'étanchéité annulaire comprend une paroi annulaire qui est courbée. Avantageusement, la paroi annulaire comporte une première surface annulaire courbée qui est concave et orientée vers le moteur d'aspiration et une deuxième surface annulaire courbée qui est convexe et orientée à l'opposé du moteur d'aspiration, et par exemple vers une paroi de séparation appartenant au boîtier de l'aspirateur. Une telle configuration de la protubérance d'étanchéité annulaire permet d'assurer une étanchéité optimale entre le boîtier de l'aspirateur et le carter de moteur, tout en assurant un montage par cisaillement aisé et fiable de l'élément d'étanchéité aéraulique sur le boîtier de l'aspirateur et tout en assurant une souplesse optimale à l'élément d'étanchéité aéraulique. En particulier, une telle configuration de la protubérance d'étanchéité annulaire permet d'obtenir plus de souplesse dans le sens de l'axe du moteur d'aspiration afin de garantir une étanchéité optimale en absorbant les jeux entre le carter de moteur et le boîtier de l'aspirateur domestique. En outre, la paroi annulaire peut être particulièrement fine, ce qui permet d'utiliser une matière ayant une dureté plus élevée pour fabriquer l'élément d'étanchéité aéraulique et donc d'assurer un meilleur glissement de ce dernier lors de son montage par cisaillement.According to one embodiment of the invention, the annular sealing protrusion comprises an annular wall which is curved. Advantageously, the annular wall comprises a first curved annular surface which is concave and oriented towards the suction motor and a second curved annular surface which is convex and oriented away from the suction motor, and for example towards a wall of separation belonging to the vacuum cleaner housing. Such a configuration of the annular sealing protuberance makes it possible to ensure an optimum seal between the vacuum cleaner housing and the motor housing, while ensuring easy and reliable shear mounting of the aeraulic sealing element on the vacuum cleaner housing and while ensuring optimal flexibility to the aeraulic sealing element. In particular, such a configuration of the annular sealing protuberance makes it possible to obtain more flexibility in the direction of the axis of the suction motor in order to guarantee optimum sealing by absorbing the clearances between the motor housing and the housing. of the household vacuum cleaner. In addition, the annular wall can be particularly thin, which makes it possible to use a material having a higher hardness to manufacture the aeraulic sealing element and therefore to ensure better sliding of the latter during its assembly by shearing. .

Selon un mode de réalisation de l'invention, la protubérance d'étanchéité annulaire comprend en outre une pluralité de parois de liaison qui sont décalées angulairement les unes des autres et qui sont réparties autour de l'ouverture de passage, chaque paroi de liaison s'étendant à partir de la première surface annulaire courbée.According to one embodiment of the invention, the annular sealing protuberance further comprises a plurality of connecting walls which are angularly offset from each other and which are distributed around the passage opening, each connecting wall s 'extending from the first curved annular surface.

Selon un mode de réalisation de l'invention, le moteur d'aspiration comporte un ventilateur et un moteur électrique configuré pour entraîner en rotation le ventilateur.According to one embodiment of the invention, the suction motor comprises a fan and an electric motor configured to drive the fan in rotation.

Selon un mode de réalisation de l'invention, le moteur d'aspiration comporte en outre un couvercle de ventilateur recouvrant au moins partiellement le ventilateur, l'ouverture d'entrée d'air étant prévue sur le couvercle de ventilateur.According to one embodiment of the invention, the suction motor further comprises a fan cover at least partially covering the fan, the air inlet opening being provided on the fan cover.

Selon un mode de réalisation de l'invention, le dispositif d'aspiration comporte un système de suspension configuré pour supporter le moteur d'aspiration. Le système de suspension peut comporter une pluralité d'éléments d'amortissement disposés sur le pourtour du moteur d'aspiration et reliés au carter de moteur. Avantageusement, chaque élément d'amortissement présente une section transversale globalement en forme de S. Une telle configuration des éléments d'amortissement permet d'utiliser des éléments d'amortissement très souples et donc de limiter encore le transfert des vibrations générées par le moteur d'aspiration au boîtier de l'aspirateur, et ainsi d'assurer un découplage amélioré du moteur d'aspiration par rapport au boîtier de l'aspirateur.According to one embodiment of the invention, the suction device comprises a suspension system configured to support the suction motor. the The suspension system may include a plurality of damping elements disposed around the perimeter of the vacuum motor and connected to the motor housing. Advantageously, each damping element has a generally S-shaped cross section. Such a configuration of the damping elements makes it possible to use very flexible damping elements and therefore to further limit the transfer of vibrations generated by the engine. suction to the vacuum cleaner housing, and thus ensure improved decoupling of the vacuum motor from the vacuum cleaner housing.

Selon un mode de réalisation de l'invention, le système de suspension comporte en outre au moins un ressort de compensation configuré pour compenser le poids du moteur d'aspiration. Un tel ressort de compensation permet notamment de maintenir le moteur d'aspiration en « lévitation » de telle sorte que les éléments d'amortissement puissent travailler de la même façon et donc assurer un centrage approprié du moteur d'aspiration par rapport au boîtier de l'aspirateur.According to one embodiment of the invention, the suspension system further comprises at least one compensation spring configured to compensate for the weight of the suction motor. Such a compensation spring makes it possible in particular to keep the suction motor in "levitation" so that the damping elements can work in the same way and therefore ensure an appropriate centering of the suction motor with respect to the housing of the pump. 'aspirator.

Selon un mode de réalisation de l'invention, l'élément d'étanchéité aéraulique est en élastomère.According to one embodiment of the invention, the aeraulic sealing element is made of elastomer.

La présente invention concerne en outre un aspirateur domestique comportant un dispositif d'aspiration selon l'une quelconque des caractéristiques précédentes.The present invention further relates to a domestic vacuum cleaner comprising a suction device according to any one of the preceding characteristics.

Selon un mode de réalisation de l'invention, l'aspirateur domestique comporte un boîtier comprenant un compartiment de filtration et un compartiment moteur séparés par une paroi de séparation, la première portion d'étanchéité annulaire étant configurée pour coopérer de manière étanche avec la paroi de séparation. Avantageusement, l'élément d'étanchéité aéraulique est configuré pour guider le flux d'aspiration généré par le moteur d'aspiration depuis l'orifice de communication jusqu'à l'ouverture d'entrée d'air.According to one embodiment of the invention, the domestic vacuum cleaner comprises a housing comprising a filtration compartment and an engine compartment separated by a partition wall, the first annular sealing portion being configured to cooperate in a sealed manner with the wall. of seperation. Advantageously, the aeraulic sealing element is configured to guide the suction flow generated by the suction motor from the communication port to the air inlet opening.

La présente invention concerne également un élément d'étanchéité aéraulique pour dispositif d'aspiration, l'élément d'étanchéité aéraulique étant configuré pour guider un flux d'aspiration depuis une ouverture de passage prévue sur un carter de moteur jusqu'à une ouverture d'entrée d'air d'un moteur d'aspiration, l'élément d'étanchéité aéraulique étant annulaire et flexible, l'élément d'étanchéité aéraulique comprenant une première portion d'étanchéité annulaire configurée pour coopérer de manière étanche avec le carter de moteur, une deuxième portion d'étanchéité annulaire configurée pour coopérer de manière étanche avec le moteur d'aspiration, et une portion intermédiaire annulaire située entre les première et deuxième portions d'étanchéité annulaires, caractérisé en ce que la portion intermédiaire annulaire comporte au moins un pli radial orienté sensiblement radialement par rapport à un axe central de l'élément d'étanchéité aéraulique, et au moins un pli annulaire sensiblement concentrique avec l'axe central de l'élément d'étanchéité aéraulique.The present invention also relates to an aeraulic sealing element for a suction device, the aeraulic sealing element being configured to guide a suction flow from a passage opening provided on a motor casing to an opening of the motor. air inlet of a suction motor, the aeraulic sealing element being annular and flexible, the sealing element aeraulic comprising a first annular sealing portion configured to cooperate in a sealed manner with the motor housing, a second annular sealing portion configured to cooperate in a sealed manner with the suction motor, and an annular intermediate portion located between the first and second annular sealing portions, characterized in that the annular intermediate portion comprises at least one radial fold oriented substantially radially with respect to a central axis of the aeraulic sealing element, and at least one annular fold substantially concentric with the central axis of the aeraulic sealing element.

Brève description des figuresBrief description of the figures

L'invention sera bien comprise à l'aide de la description qui suit en référence aux dessins schématiques annexés représentant, à titre d'exemple non limitatif, une forme d'exécution du dispositif d'aspiration.

  • Figure 1 est une vue partielle en perspective d'un aspirateur domestique selon la présente invention.
  • Figure 2 est une vue en coupe longitudinale d'un boîtier de l'aspirateur domestique de la figure 1.
  • Figure 3 est une vue en perspective, partiellement tronquée, d'un dispositif d'aspiration appartenant à l'aspirateur de la figure 1.
  • Figure 4 est une vue éclatée en perspective du dispositif d'aspiration de la figure 3.
  • Figure 5 est une vue en perspective arrière d'un carénage avant et d'un élément d'étanchéité aéraulique appartenant au dispositif d'aspiration de la figure 3.
  • Figure 6 est une vue en coupe longitudinale du carénage avant et de l'élément d'étanchéité aéraulique de la figure 5.
  • Figures 7 et 8 sont des vues en perspective avant et arrière de l'élément d'étanchéité aéraulique de la figure 5.
  • Figure 9 est une vue en perspective arrière du carénage avant et d'un moteur d'aspiration appartenant au dispositif d'aspiration de la figure 3.
  • Figure 10 est une vue arrière du carénage avant et du moteur d'aspiration de la figure 9.
The invention will be clearly understood with the aid of the description which follows with reference to the appended schematic drawings showing, by way of non-limiting example, one embodiment of the suction device.
  • Figure 1 is a partial perspective view of a household vacuum cleaner according to the present invention.
  • Figure 2 is a longitudinal sectional view of a housing of the household vacuum cleaner of the figure 1 .
  • Figure 3 is a perspective view, partially cut away, of a suction device belonging to the vacuum cleaner of the figure 1 .
  • Figure 4 is an exploded perspective view of the suction device of the figure 3 .
  • Figure 5 is a rear perspective view of a front fairing and an aeraulic sealing element belonging to the suction device of the figure 3 .
  • Figure 6 is a longitudinal sectional view of the front fairing and the aeraulic sealing element of the figure 5 .
  • Figures 7 and 8 are front and rear perspective views of the aeraulic sealing element of the figure 5 .
  • Figure 9 is a rear perspective view of the front fairing and of a suction motor belonging to the suction device of the figure 3 .
  • Figure 10 is a rear view of the front fairing and suction motor of the figure 9 .

Les figures 1 à 10 représentent un aspirateur domestique 2 comportant notamment un boîtier 3, également corps d'aspirateur, comprenant de façon connue un compartiment de filtration 4 et un compartiment moteur 5 séparés par une paroi de séparation 6 pourvue d'un orifice de communication 7. Le compartiment de filtration 4 est destiné à recevoir un dispositif de filtration (non représenté sur les figures), tel qu'un sac de filtration ou un dispositif de séparation cyclonique, permettant de retenir des déchets aspirés dans le boîtier 3.The figures 1 to 10 show a domestic vacuum cleaner 2 comprising in particular a housing 3, also vacuum cleaner body, comprising in known manner a filtration compartment 4 and an engine compartment 5 separated by a partition wall 6 provided with a communication orifice 7. The filter compartment filtration 4 is intended to receive a filtration device (not shown in the figures), such as a filtration bag or a cyclonic separation device, making it possible to retain the waste sucked into the housing 3.

Le boîtier 3 comprend également une entrée d'air 8 par laquelle de l'air transportant des déchets est aspiré dans le boîtier 3, et une sortie d'air 9 par laquelle l'air préalablement débarrassé des déchets par le dispositif de filtration est évacué hors du boîtier 3. Le boîtier 3 est avantageusement équipé de roues 11 pour assurer le déplacement de l'aspirateur domestique 2.The housing 3 also comprises an air inlet 8 through which air transporting waste is sucked into the housing 3, and an air outlet 9 through which the air previously cleared of waste by the filtration device is discharged. outside the housing 3. The housing 3 is advantageously equipped with wheels 11 to ensure the movement of the domestic vacuum cleaner 2.

L'aspirateur domestique 2 peut également comporter un tuyau flexible (non représenté sur les figures) raccordé, de préférence de manière amovible, à l'entrée d'air 8 du boîtier 3, et un accessoire d'aspiration (non représenté sur les figures) tel que, par exemple, un tube télescopique rigide qui peut recevoir, au niveau de son extrémité opposée au tuyau flexible, une tête d'aspiration amovible.The domestic vacuum cleaner 2 can also include a flexible hose (not shown in the figures) connected, preferably removably, to the air inlet 8 of the housing 3, and a suction accessory (not shown in the figures ) such as, for example, a rigid telescopic tube which can receive, at its end opposite the flexible pipe, a removable suction head.

L'aspirateur domestique 2 comprend en outre un dispositif d'aspiration 12 logé dans le compartiment moteur 5. Le dispositif d'aspiration 12 comprend un carter de moteur 13. Selon le mode de réalisation représenté sur les figures, le carter de moteur 13 comporte un carénage avant 13.1 et un carénage arrière 13.2 assemblés l'un à l'autre par exemple par vissage ou encliquetage, et une ouverture de passage 14 ménagée sur le carénage avant 13.1.The domestic vacuum cleaner 2 further comprises a suction device 12 housed in the engine compartment 5. The suction device 12 comprises a motor casing 13. According to the embodiment shown in the figures, the motor casing 13 comprises a front fairing 13.1 and a rear fairing 13.2 assembled to one another, for example by screwing or snapping, and a passage opening 14 made on the front fairing 13.1.

Le dispositif d'aspiration 12 comprend de plus un moteur d'aspiration 15, également nommé moto-ventilateur, disposé dans le carter de moteur 13 et configuré pour générer un flux d'aspiration. De façon connue, le moteur d'aspiration 15 comporte un ventilateur et un moteur électrique configuré pour entraîner en rotation le ventilateur. Le moteur d'aspiration 15 peut comporter en outre un couvercle de ventilateur 16 recouvrant au moins partiellement le ventilateur et définissant une ouverture d'entrée d'air 17.The suction device 12 further comprises a suction motor 15, also called motor-fan, arranged in the motor housing 13 and configured to generate a suction flow. In known manner, the suction motor 15 comprises a fan and an electric motor configured to drive the fan in rotation. The suction motor 15 may comprise in in addition to a fan cover 16 at least partially covering the fan and defining an air inlet opening 17.

Le dispositif d'aspiration 12 comprend également un élément d'étanchéité aéraulique 18 qui est monobloc et qui est configuré pour guider le flux d'aspiration depuis l'ouverture de passage 14 jusqu'à l'ouverture d'entrée d'air 17.The suction device 12 also comprises an aeraulic sealing element 18 which is in one piece and which is configured to guide the suction flow from the passage opening 14 to the air inlet opening 17.

Comme montré plus particulièrement sur les figures 6 à 8, l'élément d'étanchéité aéraulique 18 est annulaire et flexible, et comprend une première portion d'étanchéité annulaire 19 configurée pour coopérer de manière étanche avec le carter de moteur 13, une deuxième portion d'étanchéité annulaire 21 configurée pour coopérer de manière étanche avec le moteur d'aspiration 15, et une portion intermédiaire annulaire 22 située entre les première et deuxième portions d'étanchéité annulaires 19, 21. De façon avantageuse, les première et deuxième portions d'étanchéité annulaires 19, 21 sont décalées axialement l'une par rapport à l'autre.As shown more particularly on figures 6 to 8 , the aeraulic sealing element 18 is annular and flexible, and comprises a first annular sealing portion 19 configured to cooperate in a sealed manner with the motor housing 13, a second annular sealing portion 21 configured to cooperate in such a manner sealed with the suction motor 15, and an annular intermediate portion 22 located between the first and second annular sealing portions 19, 21. Advantageously, the first and second annular sealing portions 19, 21 are axially offset. 'one in relation to the other.

Selon le mode de réalisation représenté sur les figures, la première portion d'étanchéité annulaire 19 s'étend sur le pourtour de l'ouverture de passage 14 et est surmoulée sur le carénage avant 13.1 du carter de moteur 13. De façon avantageuse, la première portion d'étanchéité annulaire 19 s'étend sur une face avant du carénage avant 13.1 qui est située à l'opposé du moteur d'aspiration 15.According to the embodiment shown in the figures, the first annular sealing portion 19 extends around the periphery of the passage opening 14 and is molded onto the front fairing 13.1 of the engine casing 13. Advantageously, the first annular sealing portion 19 extends over a front face of the front fairing 13.1 which is located opposite the suction motor 15.

Comme montré sur les figures 5 et 6, le carénage avant 13.1 comporte une partie de maintien 23 sur laquelle est surmoulée la première portion d'étanchéité annulaire 19. La partie de maintien 23 comporte avantageusement une bague de maintien annulaire 24 qui définit l'ouverture de passage 14 et qui est reliée à un corps principal 25 du carénage avant 13.1 par des pattes de liaison 26. Avantageusement, les pattes de liaison 26 s'étendent radialement et sont espacées angulairement les unes des autres de manière à former, avec la bague de maintien annulaire 24 et le corps principal 25 du carénage avant 13.1, des orifices traversants 27 qui sont décalés angulairement les uns des autres et qui sont répartis autour de l'ouverture de passage 14. Avantageusement, les orifices traversants 27 s'étendent en arc de cercle et sont alignés circonférentiellement. Comme montré sur les figures 6 et 8, la première portion d'étanchéité annulaire 19 comporte une protubérance d'étanchéité annulaire 28 s'étendant autour de l'ouverture de passage 14 et faisant saillie à l'opposé du moteur d'aspiration 15. La protubérance d'étanchéité annulaire 28 est configurée pour s'étendre autour de l'orifice de communication 7 et pour coopérer de manière étanche avec la paroi de séparation 6. De façon avantageuse, la protubérance d'étanchéité annulaire 28 recouvre les orifices traversants 27.As shown on figures 5 and 6 , the front fairing 13.1 comprises a retaining part 23 on which is molded the first annular sealing portion 19. The retaining part 23 advantageously comprises an annular retaining ring 24 which defines the passage opening 14 and which is connected to a main body 25 of the front fairing 13.1 by connecting lugs 26. Advantageously, the connecting lugs 26 extend radially and are angularly spaced from each other so as to form, with the annular retaining ring 24 and the main body 25 of the front fairing 13.1, through orifices 27 which are angularly offset from one another and which are distributed around the passage opening 14. Advantageously, the through orifices 27 extend in an arc of a circle and are aligned circumferentially. As shown on figures 6 and 8 , the first annular sealing portion 19 has an annular sealing protrusion 28 extending around the passage opening 14 and projecting away from the suction motor 15. The annular sealing protrusion 28 is configured to extend around the communication orifice 7 and to cooperate in a sealed manner with the partition wall 6. Advantageously, the annular sealing protrusion 28 covers the through orifices 27.

La protubérance d'étanchéité annulaire 28 comprend une paroi annulaire 29 qui est mince et qui est courbée. La paroi annulaire 29 comporte une première surface annulaire courbée 29.1 qui est concave et orientée vers le moteur d'aspiration 15 et une deuxième surface annulaire courbée 29.2 qui est convexe et orientée à l'opposé du moteur d'aspiration 15, c'est-à-dire vers la paroi de séparation 6.The annular sealing protrusion 28 includes an annular wall 29 which is thin and which is curved. The annular wall 29 has a first curved annular surface 29.1 which is concave and oriented towards the suction motor 15 and a second curved annular surface 29.2 which is convex and oriented away from the suction motor 15, that is, i.e. towards the partition wall 6.

La protubérance d'étanchéité annulaire 28 comprend en outre une pluralité de parois de liaison 31 qui sont décalées angulairement les unes des autres et qui sont réparties autour de l'ouverture de passage 14. Chaque paroi de liaison 31 s'étend à partir de la première surface annulaire courbée 29.1 et en regard d'une patte de liaison 26 respective, et est fixée par surmoulage à cette dernière. Ainsi, chaque paroi de liaison 31 s'étend avantageusement radialement.The annular sealing protrusion 28 further comprises a plurality of connecting walls 31 which are angularly offset from each other and which are distributed around the passage opening 14. Each connecting wall 31 extends from the first curved annular surface 29.1 and facing a respective connecting tab 26, and is fixed by overmolding to the latter. Thus, each connecting wall 31 advantageously extends radially.

Comme montré sur la figure 3, la deuxième portion d'étanchéité annulaire 21 s'étend autour de l'ouverture d'entrée d'air 17 et présente un diamètre extérieur inférieur à un diamètre extérieur de la première portion d'étanchéité annulaire 19.As shown on the figure 3 , the second annular sealing portion 21 extends around the air inlet opening 17 and has an outside diameter smaller than an outside diameter of the first annular sealing portion 19.

La deuxième portion d'étanchéité annulaire 21 comporte plus particulièrement une lèvre d'étanchéité annulaire 32 qui s'étend transversalement par rapport à l'axe central A de l'élément d'étanchéité aéraulique 18 et qui est configurée pour coopérer de manière étanche avec le moteur d'aspiration 15, et plus particulièrement avec le couvercle de ventilateur 16.The second annular sealing portion 21 more particularly comprises an annular sealing lip 32 which extends transversely with respect to the central axis A of the aeraulic sealing element 18 and which is configured to cooperate in a sealed manner with the suction motor 15, and more particularly with the fan cover 16.

La lèvre d'étanchéité annulaire 32 est configurée pour prendre appui contre le moteur d'aspiration 15 lorsque le moteur d'aspiration 15 est à l'arrêt, et pour être plaquée et maintenue en appui de manière étanche contre le moteur d'aspiration 15 lorsque le moteur d'aspiration 15 est alimenté et génère le flux d'aspiration. En d'autres termes, lorsque le moteur d'aspiration 15 est alimenté et génère le flux d'aspiration, la résultante des forces s'appliquant sur la lèvre d'étanchéité annulaire 32 est telle que la lèvre d'étanchéité annulaire 32 est plaquée et maintenue en appui de manière étanche contre le moteur d'aspiration 15.The annular sealing lip 32 is configured to bear against the suction motor 15 when the suction motor 15 is stopped, and to be pressed against and held in sealing manner against the suction motor 15. when the suction motor 15 is energized and generates the suction flow. In other words, when the suction motor 15 is energized and generates the suction flow, the resultant of the forces applied to the annular sealing lip 32 is such that the annular sealing lip 32 is pressed. and held in sealed manner against the suction motor 15.

Selon le mode de réalisation représenté sur les figures, la lèvre d'étanchéité annulaire 32 comporte une nervure d'étanchéité annulaire 33 configurée pour coopérer de manière étanche avec le moteur d'aspiration 15. La nervure d'étanchéité annulaire 33 est avantageusement ménagée au niveau d'un bord périphérique de la lèvre d'étanchéité annulaire 32, et s'étend sensiblement parallèlement à l'axe central A de l'élément d'étanchéité aéraulique 18.According to the embodiment shown in the figures, the annular sealing lip 32 comprises an annular sealing rib 33 configured to cooperate in a sealed manner with the suction motor 15. The annular sealing rib 33 is advantageously provided at the bottom. level with a peripheral edge of the annular sealing lip 32, and extends substantially parallel to the central axis A of the aeraulic sealing element 18.

Comme montré sur la figure 8, la deuxième portion d'étanchéité annulaire 21 comporte en outre des nervures d'appui 34 configurées pour prendre appui contre le moteur d'aspiration 15, et par exemple contre une surface externe du couvercle de ventilateur 16. De façon avantageuse, les nervures d'appui 34 s'étendent autour de l'ouverture d'entrée d'air 17 et s'étendent radialement par rapport à l'axe central A de l'élément d'étanchéité aéraulique 18. Les nervures d'appui 34 sont plus particulièrement configurées pour répartir les forces de pression appliquées sur la nervure d'étanchéité annulaire 33 lorsque le moteur d'aspiration 15 est alimenté et génère le flux d'aspiration. Selon le mode de réalisation représenté sur les figures, les nervures d'appui 34 s'étendent jusqu'à la nervure d'étanchéité annulaire 33.As shown on the figure 8 , the second annular sealing portion 21 further comprises bearing ribs 34 configured to bear against the suction motor 15, and for example against an outer surface of the fan cover 16. Advantageously, the ribs d 'support 34 extend around the air inlet opening 17 and extend radially relative to the central axis A of the aeraulic sealing element 18. The support ribs 34 are more particularly configured to distribute the pressure forces applied to the annular sealing rib 33 when the suction motor 15 is energized and generates the suction flow. According to the embodiment shown in the figures, the support ribs 34 extend as far as the annular sealing rib 33.

Comme montré plus particulièrement sur la figure 6, la portion intermédiaire annulaire 22 de l'élément d'étanchéité aéraulique 18 comporte une première portion tubulaire 35 s'étendant à partir de la première portion d'étanchéité annulaire 19 et en direction du moteur d'aspiration 15, et une deuxième portion tubulaire 36 s'étendant à partir de la deuxième portion d'étanchéité annulaire 21 et à l'opposé du moteur d'aspiration 15. Les première et deuxième portions tubulaires 35, 36 sont concentriques avec l'axe central A de l'élément d'étanchéité aéraulique 18 et sont décalées axialement l'une par rapport à l'autre. Avantageusement, la deuxième portion tubulaire 36 est située radialement à l'intérieur de la première portion tubulaire 35, et les première et deuxième portions tubulaires 35, 36 se chevauchent partiellement selon une direction axiale.As shown more particularly on the figure 6 , the annular intermediate portion 22 of the aeraulic sealing element 18 comprises a first tubular portion 35 extending from the first annular sealing portion 19 and in the direction of the suction motor 15, and a second tubular portion 36 extending from the second annular sealing portion 21 and away from the suction motor 15. The first and second tubular portions 35, 36 are concentric with the central axis A of the element. air-tightness 18 and are offset axially with respect to one another. Advantageously, the second tubular portion 36 is located radially inside the first tubular portion 35, and the first and second Tubular portions 35, 36 partially overlap in an axial direction.

La portion intermédiaire annulaire 22 comporte en outre une portion de liaison annulaire 37 située entre les première et deuxième portions tubulaires 35, 36 et reliant les première et deuxième portions tubulaires 35, 36 l'une à l'autre de manière à définir deux plis annulaires 38, 39 concentriques avec l'axe central A de l'élément d'étanchéité aéraulique 18. Les deux plis annulaires 38, 39 sont avantageusement orientés dans deux directions opposées, de telle sorte que la portion intermédiaire annulaire 22 présente une section longitudinale globalement en forme de Z.The annular intermediate portion 22 further comprises an annular connecting portion 37 located between the first and second tubular portions 35, 36 and connecting the first and second tubular portions 35, 36 to one another so as to define two annular folds 38, 39 concentric with the central axis A of the aeraulic sealing element 18. The two annular folds 38, 39 are advantageously oriented in two opposite directions, such that the annular intermediate portion 22 has a longitudinal section generally in Z shape.

Selon le mode de réalisation représenté sur les figures, la portion intermédiaire annulaire 22 comporte également une pluralité de plis radiaux 41 qui sont orientés sensiblement radialement par rapport à l'axe central A de l'élément d'étanchéité aéraulique 18, et qui s'étendent avantageusement chacun globalement selon un plan orienté radialement par rapport à l'axe central A. Les plis radiaux 41 sont décalés angulairement les uns des autres et sont avantageusement régulièrement répartis autour de l'axe central A.According to the embodiment shown in the figures, the annular intermediate portion 22 also comprises a plurality of radial folds 41 which are oriented substantially radially with respect to the central axis A of the aeraulic sealing element 18, and which s' each advantageously extend generally along a plane oriented radially with respect to the central axis A. The radial folds 41 are angularly offset from each other and are advantageously regularly distributed around the central axis A.

Chaque pli radial 41 comporte avantageusement une surface concave 41.1 orientée vers l'extérieur de l'élément d'étanchéité aéraulique 18 et une surface convexe 41.2 orientée vers l'intérieur de l'élément d'étanchéité aéraulique 18.Each radial fold 41 advantageously comprises a concave surface 41.1 oriented towards the outside of the aeraulic sealing element 18 and a convex surface 41.2 oriented towards the inside of the aeraulic sealing element 18.

Selon le mode de réalisation représenté sur les figures, chaque pli radial 41 est avantageusement ménagé partiellement sur la deuxième portion tubulaire 36 et partiellement sur la portion de liaison annulaire 37.According to the embodiment shown in the figures, each radial fold 41 is advantageously provided partially on the second tubular portion 36 and partially on the annular connection portion 37.

Le dispositif d'aspiration 12 comporte en outre (voir notamment les figures 9 et 10) un système de suspension 43 configuré pour supporter le moteur d'aspiration 15. Le système de suspension 43 comporte plus particulièrement une pièce de support 44 fixée sur le moteur d'aspiration 15, et une pluralité d'éléments d'amortissement 45 interposés entre la pièce de support 44 et le carter de moteur 13 et répartis autour du moteur d'aspiration 15.The suction device 12 further comprises (see in particular the figures 9 and 10 ) a suspension system 43 configured to support the suction motor 15. The suspension system 43 more particularly comprises a support piece 44 fixed to the suction motor 15, and a plurality of damping elements 45 interposed between the support piece 44 and the motor housing 13 and distributed around the suction motor 15.

La pièce de support 44 peut par exemple comporter une partie de support annulaire 44.1 s'étendant autour du moteur d'aspiration 15, une partie arrière 44.2 s'étendant à l'arrière du moteur d'aspiration 15 et des branches de liaison 44.3 s'étendant longitudinalement et reliant la partie de support annulaire 44.1 à la partie arrière 44.2. De façon avantageuse, la pièce de support 44 peut ainsi définir un logement dans lequel est monté le moteur d'aspiration 15.The support part 44 may for example comprise an annular support part 44.1 extending around the suction motor 15, a rear part 44.2 extending at the rear of the suction motor 15 and connecting branches 44.3 extending longitudinally and connecting the annular support part 44.1 to the rear part 44.2. Advantageously, the support piece 44 can thus define a housing in which the suction motor 15 is mounted.

Avantageusement, chaque élément d'amortissement 45 présente une section transversale globalement en forme de S, et comporte une première partie de fixation 45.1 fixée au carter de moteur 13, par exemple au carénage arrière 13.2, et une deuxième partie de fixation 45.2 fixée à la pièce de support 44. Le système de suspension 43 peut par exemple comporter quatre éléments d'amortissement 45 régulièrement répartis autour du moteur d'aspiration 15.Advantageously, each damping element 45 has a generally S-shaped cross section, and comprises a first fixing part 45.1 fixed to the engine casing 13, for example to the rear fairing 13.2, and a second fixing part 45.2 fixed to the support piece 44. The suspension system 43 may for example include four damping elements 45 regularly distributed around the suction motor 15.

Selon le mode de réalisation représenté sur les figures, le système de suspension 43 comporte en outre un ressort de compensation 46 configuré pour compenser le poids du moteur d'aspiration 15. Le ressort de compensation 46 peut par exemple être situé au-dessus du moteur d'aspiration 15 et être formé par un ressort de traction. Selon une variante de réalisation, le ressort de compensation 46 pourrait être situé en-dessous du moteur d'aspiration 15 et être formé par un ressort de compression.According to the embodiment shown in the figures, the suspension system 43 further comprises a compensation spring 46 configured to compensate for the weight of the suction motor 15. The compensation spring 46 may for example be located above the motor. suction 15 and be formed by a tension spring. According to an alternative embodiment, the compensation spring 46 could be located below the suction motor 15 and be formed by a compression spring.

Le ressort de compensation 46 est plus particulièrement interposé entre la pièce de support 44 et le carter de moteur 13. Ainsi, le ressort de compensation 46 comporte avantageusement une première portion d'extrémité 46.1 fixée au carter de moteur 13, par exemple au carénage arrière 13.2, et une deuxième portion d'extrémité 46.2 fixée à la pièce de support 44.The compensation spring 46 is more particularly interposed between the support piece 44 and the engine casing 13. Thus, the compensation spring 46 advantageously comprises a first end portion 46.1 fixed to the engine casing 13, for example to the rear fairing. 13.2, and a second end portion 46.2 fixed to the support piece 44.

Bien entendu, la présente invention n'est nullement limitée au mode de réalisation décrit et illustré qui n'a été donné qu'à titre d'exemple. Des modifications restent possibles, notamment du point de vue de la constitution des divers éléments ou par substitution d'équivalents techniques, sans sortir pour autant du domaine de protection de l'invention.Of course, the present invention is in no way limited to the embodiment described and illustrated which has been given only by way of example. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without thereby departing from the scope of protection of the invention.

Claims (18)

  1. Suction device (12) for a domestic vacuum cleaner, comprising:
    - a motor housing (13) comprising a passage opening (14),
    - a suction motor (15) disposed in the motor housing (13) and configured to generate a suction flow, the suction motor (15) comprising an air inlet opening (17), and
    - an aeraulic sealing element (18) configured to guide the suction flow from the passage opening (14) to the air inlet opening (17), the aeraulic sealing element (18) being annular and flexible, the aeraulic sealing element (18) comprising a first annular sealing portion (19) configured to cooperate in a sealed manner with the motor housing (13), a second annular sealing portion (21) configured to cooperate in a sealed manner with the suction motor (15), and an annular intermediate portion (22) located between the first and second annular sealing portions (19, 21),
    characterised in that the annular intermediate portion (22) comprises at least one radial fold (41) oriented substantially radially relative to a central axis (A) of the aeraulic sealing element (18), and at least one annular fold (38, 39) substantially concentric with the central axis (A) of the aeraulic sealing element (18).
  2. Suction device (12) according to claim 1, wherein the annular intermediate portion (22) comprises a first tubular portion (35) extending from the first annular sealing portion (19) and in the direction of the suction motor (15), and a second tubular portion (36) extending from the second annular sealing portion (21) and in a direction opposite the suction motor (15), the first and second tubular portions (35, 36) being substantially concentric and being axially offset from one another.
  3. Suction device (12) according to claim 2, wherein the annular intermediate portion (22) further comprises an annular connection portion (37) located between the first and second tubular portions (35, 36) and connecting the first and second tubular portions (35, 36) to one another in such a way as to define the at least one annular fold (38, 39).
  4. Suction device (12) according to claim 3, wherein the annular intermediate portion (22) connects the first and second tubular portions (35, 36) to one another in such a way as to define two annular folds (38, 39) substantially concentric with the central axis (A) of the aeraulic sealing element (18), the two annular folds (38, 39) being oriented in two opposite directions.
  5. Suction device (12) according to any of claims 2 to 4, wherein at least one portion of the first tubular portion (35) is located facing the second tubular portion (36).
  6. Suction device (12) according to any of claims 2 to 5, wherein the second tubular portion (36) is located radially inside the first tubular portion (35).
  7. Suction device (12) according to any of claims 2 to 6, wherein the at least one radial fold (41) is arranged at least partially on the second tubular portion (36).
  8. Suction device (12) according to any of claims 1 to 7, wherein the annular intermediate portion (22) comprises a plurality of radial folds (41) that are oriented substantially radially relative to the central axis (A) of the aeraulic sealing element (18) and which are angularly offset from one another and distributed about the central axis (A).
  9. Suction device (12) according to any of claims 1 to 8, wherein the first and second annular sealing portions (19, 21) are offset axially with respect to one another.
  10. Suction device (12) according to any of claims 1 to 9, wherein the second annular sealing portion (21) comprises an annular sealing lip (32).
  11. Suction device (12) according to claim 10, wherein the annular sealing lip (32) comprises an annular sealing rib (33) configured to cooperate in a sealed manner with the suction motor (15).
  12. Suction device (12) according to claim 10 or 11, wherein the second annular sealing portion (21) comprises supporting ribs (34) configured to bear against the suction motor (15).
  13. Suction device (12) according to any of claims 1 to 12, wherein the second annular sealing portion (21) is configured to be thrust and maintained bearing in a sealed manner against the suction motor (15) when the suction motor (15) is powered and is generating the suction flow.
  14. Suction device (12) according to any of claims 1 to 13, wherein the second annular sealing portion (21) has an outer diameter less than an outer diameter of the first annular sealing portion (19).
  15. Suction device (12) according to any of claims 1 to 14, wherein the first annular sealing portion (19) is overmoulded on a front fairing (13.1) of the motor housing (13).
  16. Suction device (12) according to any of claims 1 to 15, wherein the first annular sealing portion (19) is further configured to cooperate in a sealed manner with the case (3) of the vacuum cleaner.
  17. Domestic vacuum cleaner (2) comprising a suction device (12) according to any preceding claim.
  18. Aeraulic sealing element (18) configured to guide a suction flow from a passage opening (14) provided on a motor housing (13) to an air inlet opening (17) of a suction motor (15), the aeraulic sealing element (18) being annular and flexible, the aeraulic sealing element (18) comprising a first annular sealing portion (19) configured to cooperate in a sealed manner with the motor housing (13), a second annular sealing portion (21) configured to cooperate in a sealed manner with the suction motor (15), and an annular intermediate portion (22) located between the first and second annular sealing portions (19, 21), characterised in that the annular intermediate portion (22) comprises at least one radial fold (41) oriented substantially radially relative to a central axis (A) of the aeraulic sealing element (18), and at least one annular fold (38, 39) substantially concentric with the central axis (A) of the aeraulic sealing element (18).
EP19191537.0A 2018-09-24 2019-08-13 Suction device for a home vacuum cleaner Active EP3626148B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1858665A FR3086156B1 (en) 2018-09-24 2018-09-24 SUCTION DEVICE FOR DOMESTIC VACUUM CLEANERS

Publications (2)

Publication Number Publication Date
EP3626148A1 EP3626148A1 (en) 2020-03-25
EP3626148B1 true EP3626148B1 (en) 2021-08-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19191537.0A Active EP3626148B1 (en) 2018-09-24 2019-08-13 Suction device for a home vacuum cleaner

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EP (1) EP3626148B1 (en)
CN (2) CN211511625U (en)
ES (1) ES2886748T3 (en)
FR (1) FR3086156B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3086156B1 (en) * 2018-09-24 2020-08-28 Seb Sa SUCTION DEVICE FOR DOMESTIC VACUUM CLEANERS

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2874401B2 (en) * 1991-09-26 1999-03-24 松下電器産業株式会社 Electric vacuum cleaner
GB9916759D0 (en) * 1999-07-17 1999-09-15 Black & Decker Inc Improvements in vacuum cleaners
KR101213305B1 (en) * 2007-11-22 2012-12-18 가부시끼가이샤 도시바 Electric vacuum cleaner
CN102333472B (en) * 2008-11-05 2014-04-16 伊莱克斯公司 Vacuum cleaner
EP2255711A1 (en) * 2009-03-17 2010-12-01 Koninklijke Philips Electronics N.V. Vacuum cleaner
JP2013141514A (en) * 2012-01-11 2013-07-22 Hitachi Appliances Inc Vacuum cleaner
GB2516311B (en) * 2013-07-19 2016-06-29 Dyson Technology Ltd Motor mount
PL3280307T3 (en) * 2015-11-02 2019-11-29 Koninklijke Philips Nv A device for mounting a motor assembly of an electric appliance
CN107863834B (en) * 2016-09-21 2020-08-21 天佑电器（苏州）有限公司 Motor packing installation mechanism in medium and small-sized electrical appliances
FR3086156B1 (en) * 2018-09-24 2020-08-28 Seb Sa SUCTION DEVICE FOR DOMESTIC VACUUM CLEANERS

Also Published As

Publication number Publication date
EP3626148A1 (en) 2020-03-25
FR3086156B1 (en) 2020-08-28
CN211511625U (en) 2020-09-18
FR3086156A1 (en) 2020-03-27
ES2886748T3 (en) 2021-12-20
CN110934538B (en) 2022-12-27
CN110934538A (en) 2020-03-31

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