CN110934539B - Suction device, household dust collector and pneumatic sealing element - Google Patents
Suction device, household dust collector and pneumatic sealing element Download PDFInfo
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- CN110934539B CN110934539B CN201910891063.3A CN201910891063A CN110934539B CN 110934539 B CN110934539 B CN 110934539B CN 201910891063 A CN201910891063 A CN 201910891063A CN 110934539 B CN110934539 B CN 110934539B
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- annular
- annular sealing
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- sealing portion
- inhalation
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- 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
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- 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
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- 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
- A47L9/02—Nozzles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles For Electric Vacuum Cleaners (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The inhalation device (12) comprises: a motor case (13); a suction motor (15) disposed in the motor housing (13) and configured to generate a suction flow; and a pneumatic sealing element (18) comprising a first annular sealing portion (19) and a second annular sealing portion (21), the first annular sealing portion (19) being configured to sealingly engage the motor housing (13), the second annular sealing portion (21) being configured to sealingly engage the suction motor (15). The first annular sealing portion (19) is overmolded on the motor housing (13) and comprises an annular sealing protrusion (28), the annular sealing protrusion (28) extending around the through opening (14) and being configured to sealingly cooperate with a housing (3) of a household cleaner.
Description
Technical Field
The present invention relates to the field of household cleaners which allow the suction of dust and small-sized waste present on a surface to be cleaned, which may be, for example, a tile floor, a laminate, a mat or a carpet.
Background
A household vacuum cleaner comprises in a known manner an inhalation device comprising:
a motor housing including a through opening;
a suction motor disposed in the motor housing and configured to generate a suction flow, the suction motor including an air inlet opening; and
the pneumatic sealing element includes a first annular sealing portion configured to sealingly engage the motor housing and to sealingly engage the housing of the household cleaner, and a second annular sealing portion configured to sealingly engage the suction motor.
When the suction device is installed in the housing of such a household cleaner, the pneumatic sealing element is typically subjected to a shearing movement relative to the housing of the household cleaner. However, this shearing movement can compromise the mechanical strength of the pneumatic sealing element relative to the motor housing and thus compromise the tightness between the motor housing and the suction motor and between the motor housing and the housing of the cleaner.
Disclosure of Invention
The present invention aims to overcome all or part of these disadvantages.
The object of the invention is in particular to provide an inhalation device which ensures an easy and reliable shear mounting of the pneumatic sealing element on the housing of the vacuum cleaner, while having an optimal inhalation performance.
To this end, the invention relates to an inhalation device for a household vacuum cleaner, comprising:
a motor housing including a through opening;
a suction motor disposed in the motor housing and configured to generate a suction flow, the suction motor including an air inlet opening; and
a pneumatic sealing element comprising a first annular sealing portion configured to sealingly engage the motor housing and a second annular sealing portion configured to sealingly engage the suction motor;
characterized in that the first annular sealing portion is overmolded on the motor housing and comprises an annular sealing protrusion extending around the through opening and configured to sealingly cooperate with the housing of the household cleaner, the annular sealing protrusion having at least partially a hollow portion.
This configuration of the annular sealing projection and this overmolding of the first annular sealing portion onto the motor housing ensures a minimal optimal seal of the overmolding material between the housing of the vacuum cleaner and the motor housing, while ensuring easy and reliable shear mounting of the pneumatic sealing element onto the housing of the vacuum cleaner, and while ensuring optimal flexibility of the pneumatic sealing element. In particular, the over-moulding of the first annular sealing portion on the motor housing ensures an optimal mechanical strength of the pneumatic sealing element on the motor housing. In addition, the hollow shape of the annular sealing protrusion allows for increased flexibility of the annular sealing protrusion.
The suction device according to the invention thus ensures an easy and reliable shear mounting of the pneumatic sealing element on the housing of the vacuum cleaner, while having an optimal suction performance.
The inhalation device may also have one or more of the following features, alone or in combination.
According to one embodiment of the invention, the first annular sealing portion extends around the through opening.
According to one embodiment of the invention, the annular sealing protrusion protrudes away from the suction motor.
According to one embodiment of the invention, the annular sealing protrusion is flexible.
According to one embodiment of the invention, the annular sealing projection has a convex front contour and a rear contour, which rear contour has at least in part a hollow shape.
This hollow-shaped rear profile allows to reduce the thickness of the wall forming the annular sealing protrusion, which has the advantage of increasing the flexibility of the annular sealing protrusion.
According to one embodiment of the invention, the annular sealing protrusion comprises an annular wall that is curved, the annular wall comprising a first curved annular surface that is concave and oriented towards the suction motor and a second curved annular surface that is opposite the first curved annular surface, the second curved annular surface being convex and oriented away from the suction motor. This configuration of the annular sealing protrusion allows greater flexibility in the axial direction of the suction motor to be obtained in order to ensure optimal tightness by absorbing the gap between the motor case and the housing of the household cleaner. In addition, the annular wall may be particularly thin, which allows the pneumatic sealing element to be manufactured using a material with a higher hardness and thus ensures better sliding of the pneumatic sealing element upon its shear mounting.
According to one embodiment of the invention, the second curved annular surface is oriented towards a partition wall belonging to the housing of the vacuum cleaner.
According to one embodiment of the invention, the annular sealing protrusion further comprises a plurality of connecting walls angularly offset from each other and distributed around the through opening, each connecting wall extending from the first curved annular surface and being fixed on the motor housing.
This feature allows to ensure a better retention of the shape of the annular sealing protrusion and in particular to prevent the annular sealing protrusion from returning to the installation of the device and having an inverted shape with respect to the original overmolded shape.
According to one embodiment of the invention, the motor housing includes a front fairing and a rear fairing, the first annular seal segment being overmolded onto the front fairing of the motor housing. Advantageously, the first annular sealing portion extends on a front surface of the front streamline portion, the front surface being located opposite the suction motor.
According to one embodiment of the invention, the motor housing comprises a plurality of through holes angularly offset from each other and distributed around the through opening, the first annular sealing portion being over-molded on the motor housing at the through holes such that the annular sealing protrusion covers the through holes.
Such through holes allow passage of a mold member defining a hollow shape of an inner wall of the annular sealing protrusion when the annular sealing protrusion is over-molded on the motor housing.
According to one embodiment of the invention, each through hole extends in the shape of a circular arc.
According to one embodiment of the invention, the through holes are circumferentially aligned.
According to one embodiment of the invention, the motor housing comprises a holding portion over-molded with the first annular sealing portion, the holding portion comprising an annular holding ring defining the through opening, a main holding portion extending around the annular holding ring, and connecting lugs connecting the annular holding ring to the main holding portion, the connecting lugs being angularly spaced apart from each other so as to form the through hole together with the annular holding ring and the main holding portion.
According to one embodiment of the invention, the connecting lugs correspond to the connecting walls of the annular sealing projection.
According to one embodiment of the invention, the connecting lugs extend radially.
According to one embodiment of the invention, the front streamline section of the motor housing comprises the holding section.
According to one embodiment of the invention, the pneumatic sealing element is annular and flexible.
According to one embodiment of the invention, the second annular sealing portion is configured to sealingly abut and remain against the suction motor when the suction motor is energized and suction flow is generated. In other words, when the suction motor is energized and suction flow is generated, the resultant of the forces exerted on the second annular sealing portion causes the second annular sealing portion to sealingly abut and remain against the suction motor. This configuration of the air-operated sealing member allows ensuring the strength and the sealing property of the air-operated sealing member at the suction motor without adding any additional components, and thus reduces the manufacturing cost of the suction device and simplifies the assembly of the suction device.
According to one embodiment of the invention, the second annular sealing portion is configured to abut the suction motor when the suction motor is at a standstill.
According to one embodiment of the invention, the second annular sealing portion comprises an annular sealing lip extending from an annular sealing rib surrounding the air inlet opening, the annular sealing rib being configured to sealingly cooperate with the suction motor, the annular sealing lip comprising a support rib extending below the annular sealing lip and being configured to abut the suction motor so as to locally raise the annular sealing lip and allow a negative pressure generated by the suction flow to be applied below the annular sealing lip up to the edge of the annular sealing rib when the suction motor is energized and generates the suction flow.
The support rib is more specifically configured to locally raise the annular sealing lip when the annular sealing lip is abutted against the suction motor by the suction flow generated by the suction motor. Thus, the suction flow may be applied uniformly up to the edge of the annular sealing rib configured to sealingly engage the suction motor.
The support rib thus allows to distribute the pressure exerted on the annular sealing lip when the suction motor is energized and suction flow is generated, and thus allows to improve the mechanical strength of the annular sealing lip and thus the tightness between the pneumatic sealing element and the suction motor under the conditions of use of the suction device.
According to one embodiment of the invention, the pneumatic sealing element is integral.
According to one embodiment of the invention, the support rib extends around the air inlet opening.
According to one embodiment of the invention, the support ribs are regularly distributed around the air inlet opening.
According to one embodiment of the invention, the support rib extends to the inner peripheral edge of the annular sealing lip.
According to one embodiment of the invention, the support rib extends substantially radially with respect to a central axis of the pneumatic sealing element.
According to one embodiment of the invention, the annular sealing lip comprises an annular sealing rib configured to sealingly engage the suction motor.
According to one embodiment of the invention, the annular sealing rib is arranged at the peripheral edge of the annular sealing lip. Advantageously, the annular sealing rib extends substantially parallel to the central axis of the pneumatic sealing element.
According to one embodiment of the invention, the support rib extends to or near the annular sealing rib.
According to one embodiment of the invention, the second annular sealing portion has an outer diameter smaller than an outer diameter of the first annular sealing portion.
According to one embodiment of the invention, the annular sealing lip extends transversely with respect to the central axis of the pneumatic sealing element.
According to one embodiment of the invention, the pneumatic sealing element further comprises an annular intermediate portion located between the first and second annular sealing portions, the annular intermediate portion comprising a first tubular portion extending from the first annular sealing portion and towards the suction motor and a second tubular portion extending from the second annular sealing portion and away from the suction motor, the first and second tubular portions being substantially concentric and axially offset relative to each other.
According to one embodiment of the invention, at least a portion of the first tubular portion is located opposite the second tubular portion. In other words, the first tubular portion and the second tubular portion at least partially overlap in the axial direction.
According to one embodiment of the invention, the second tubular portion is radially located within the first tubular portion.
According to one embodiment of the invention, the first annular sealing portion and the second annular sealing portion are axially offset relative to each other.
According to one embodiment of the invention, the annular intermediate portion comprises at least one radial fold and at least one annular fold, the radial fold being oriented substantially radially with respect to the central axis of the pneumatic sealing element, the annular fold being substantially concentric with the central axis of the pneumatic sealing element. This configuration of the pneumatic sealing element, and in particular the presence of at least one radial fold and at least one annular fold, allows to greatly limit the transmission of the vibrations generated by the suction motor to the housing of the household cleaner. In fact, the at least one radial fold allows to increase the flexibility of the pneumatic sealing element in the tangential direction and thus to significantly reduce the transmission of vibrations generated by electromagnetic forces generated by the operation of the suction motor and the interaction between the rotor and the stator of the suction motor to the housing of the cleaner, while the at least one annular fold allows to increase the flexibility of the pneumatic sealing element in the radial direction and thus to significantly reduce the transmission of vibrations generated by the unbalance of the suction motor to the housing of the cleaner.
According to one embodiment of the invention, the annular intermediate portion further comprises an annular connecting portion located between the first tubular portion and the second tubular portion and connecting the first tubular portion and the second tubular portion to each other so as to define the at least one annular fold.
According to one embodiment of the invention, the annular connecting portion connects the first tubular portion and the second tubular portion to each other so as to define two annular folds substantially concentric with the central axis of the pneumatic sealing element, the two annular folds being oriented in two opposite directions. This configuration of the annular connecting portion further increases the flexibility of the pneumatic sealing element and thus further limits the transmission of vibrations generated by the suction motor to the housing of the household cleaner.
According to one embodiment of the invention, the annular intermediate portion has a substantially Z-shaped longitudinal section.
According to an embodiment of the invention, the at least one radial fold is arranged at least partially on the second tubular part.
According to one embodiment of the invention, the at least one radial fold is arranged at least partly on the second tubular portion and at least partly on the annular connecting portion.
According to one embodiment of the invention, the at least one radial fold extends substantially along a plane oriented radially with respect to the central axis of the pneumatic sealing element.
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 pneumatic sealing element and angularly offset from each other and distributed around the central axis, and are for example regularly distributed around the central axis.
According to one embodiment of the invention, each radial fold comprises a concave surface oriented towards the outside of the pneumatic sealing element and a convex surface oriented towards the inside of the pneumatic sealing element.
According to one embodiment of the invention, the through opening is provided on the front streamline section.
According to one embodiment of the invention, the suction motor comprises a ventilator and a motor configured to drive the ventilator in rotation.
According to one embodiment of the invention, the suction motor further comprises a ventilator cover at least partially covering the ventilator, the air inlet opening being provided on the ventilator cover.
According to one embodiment of the invention, the inhalation device comprises a suspension system configured to support the inhalation motor. The suspension system may include a plurality of damping elements disposed about the suction motor and connected to the motor housing. Advantageously, each damping element has a substantially S-shaped cross section. This configuration of the damping element allows the use of a very flexible damping element and thus further limits the transmission of vibrations generated by the suction motor to the housing of the cleaner and thus ensures improved decoupling of the suction motor relative to the housing of the cleaner.
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 allows in particular to keep the suction motor "floating" so that the damping element can work in the same way and thus ensure a proper centering of the suction motor with respect to the housing of the vacuum cleaner.
According to one embodiment of the invention, the pneumatic sealing element is made of an elastomer.
According to one embodiment of the invention, the pneumatic sealing element is configured to guide the suction flow from the through opening to the air inlet opening.
The invention also relates to a household vacuum cleaner comprising an inhalation device according to any one of the preceding features.
According to one embodiment of the present invention, the household cleaner comprises a housing comprising a filter compartment and a motor compartment, the filter compartment and the motor compartment being separated by a partition wall provided with a communication hole, the first annular sealing portion being configured to sealingly cooperate with the partition wall.
According to an embodiment of the present invention, the annular sealing protrusion is configured to extend around the communication hole and to be sealingly engaged with the partition wall.
Advantageously, the pneumatic sealing element is configured to guide the suction flow generated by the suction motor from the communication hole to the air inlet opening.
The invention also relates to a pneumatic sealing element for a household vacuum cleaner, comprising a first annular sealing portion configured to sealingly cooperate with a motor housing and a second annular sealing portion configured to sealingly cooperate with a suction motor, characterized in that the first annular sealing portion is overmolded on the motor housing and comprises an annular sealing protrusion extending around the through opening and configured to sealingly cooperate with a housing of the household vacuum cleaner.
The invention also relates to a pneumatic sealing element for an inhalation device, the pneumatic sealing element being configured to guide an inhalation flow from a through opening provided on a motor housing to an air inlet opening of an inhalation motor, the pneumatic sealing element being annular and flexible, the pneumatic sealing element comprising a first annular sealing portion configured to sealingly cooperate with the motor housing and a second annular sealing portion configured to sealingly cooperate with the inhalation motor, characterized in that the second annular sealing portion comprises an annular sealing lip and a support rib, the annular sealing lip extending around the air inlet opening and the support rib extending from the annular sealing lip and being configured to abut against the inhalation motor and, for example, against an outer surface of the ventilator cover, and the annular sealing lip being configured to sealingly abut and remain against the inhalation motor when the inhalation motor is energized and an inhalation flow is generated.
Drawings
The invention will be better understood from the following description with reference to the accompanying drawings, which show, by way of non-limiting example, embodiments of inhalation devices.
Fig. 1 is a partial perspective view of a household cleaner according to the present invention.
Fig. 2 is a longitudinal sectional view of a housing of the household cleaner of fig. 1.
Figure 3 is a partially cut-away perspective view of an inhalation device belonging to the vacuum cleaner of figure 1.
Fig. 4 is an exploded perspective view of the inhalation device of fig. 3.
Fig. 5 is a rear perspective view of a front streamline section and a pneumatic sealing element belonging to the inhalation device of fig. 3.
Fig. 6 is a longitudinal cross-sectional view of the front fairing and the pneumatic seal element of fig. 5.
Fig. 7 and 8 are front and rear perspective views of the pneumatic sealing element of fig. 5.
Fig. 9 is a rear perspective view of a front streamline and a suction motor belonging to the suction apparatus of fig. 3.
Fig. 10 is a rear view of the front streamline and suction motor of fig. 9.
Detailed Description
Fig. 1 to 10 show a household vacuum cleaner 2, which household vacuum cleaner 2 comprises, inter alia, a housing 3, also referred to as a cleaner body, which housing 3 comprises, in a known manner, a filter compartment 4 and a motor compartment 5, which filter compartment 4 and motor compartment 5 are separated by a partition wall 6 provided with a communication hole 7. The filter compartment 4 is intended to house a filter device (not shown in the figures), such as a filter bag or a cyclone device, which allows to retain the waste sucked into the housing 3.
The housing 3 further comprises an air inlet 8 through which air conveying waste is sucked into the housing 3 and an air outlet 9 through which air previously cleaned of waste by the filter means is discharged from the housing 3. The housing 3 is advantageously equipped with wheels 11 to ensure movement of the household cleaner 2.
The domestic cleaner 2 may further comprise a flexible tube (not shown in the figures) which is preferably removably connected to the air inlet 8 of the housing 3, and an inhalation accessory (not shown in the figures), such as a rigid telescopic tube which may receive a removable inhalation head at its end opposite the flexible tube.
The household cleaner 2 further comprises an inhalation device 12, which inhalation device 12 is accommodated in the motor compartment 5. The inhalation device 12 comprises a motor housing 13. According to the embodiment shown in the figures, the motor housing 13 comprises a front fairing 13.1 and a rear fairing 13.2 and a through opening 14, the front fairing 13.1 and the rear fairing 13.2 being assembled to each other, for example by screwing or snapping, said through opening 14 being arranged on the front fairing 13.1.
The inhalation device 12 further comprises an inhalation motor 15, also referred to as an electric ventilator, which inhalation motor 15 is arranged in the motor housing 13 and is configured to generate an inhalation flow. In a known manner, the suction motor 15 comprises a ventilator and an electric motor configured to drive said ventilator in rotation. The suction motor 15 may further comprise a ventilator cover 16, which ventilator cover 16 at least partially covers the ventilator and defines an air inlet opening 17.
The inhalation device 12 further comprises a pneumatic sealing element 18, which pneumatic sealing element 18 is integral and is configured to direct an inhalation flow from the through opening 14 to the air inlet opening 17.
As shown more particularly in fig. 6-8, the pneumatic sealing element 18 is annular and flexible and includes a first annular sealing portion 19, a second annular sealing portion 21, and an annular intermediate portion 22, the first annular sealing portion 19 being configured to sealingly engage the motor housing 13, the second annular sealing portion 21 being configured to sealingly engage the suction motor 15, the annular intermediate portion 22 being located between the first annular sealing portion 19 and the second annular sealing portion 21. Advantageously, the first annular sealing portion 19 and the second annular sealing portion 21 are axially offset with respect to each other.
According to the embodiment shown in the figures, a first annular sealing portion 19 extends around the through opening 14 and is overmoulded on the front streamline 13.1 of the motor housing 13. Advantageously, the first annular sealing portion 19 extends on a front surface of the front streamline 13.1, which is located opposite the suction motor 15.
As shown in fig. 5 and 6, the front fairing 13.1 includes a holding portion 23 with the first annular seal segment 19 overmolded onto the holding portion 23. The retaining portion 23 advantageously comprises an annular retaining ring 24, a main retaining portion 25 and connecting lugs 26, the annular retaining ring 24 defining the through opening 14, the main retaining portion 25 extending around the annular retaining ring 24, these connecting lugs 26 connecting the annular retaining ring 24 to the main retaining portion 25. Advantageously, the connection lugs 26 extend radially and are angularly spaced apart from each other so as to form, together with the annular retaining ring 24 and the main retaining portion 25, through holes 27, these through holes 27 being angularly offset from each other and distributed around the through opening 14. Advantageously, the through holes 27 extend in the shape of a circular arc and are circumferentially aligned.
As shown in fig. 6 and 8, the first annular sealing portion 19 includes an annular sealing protrusion 28, which annular sealing protrusion 28 extends around the through opening 14 and protrudes with respect to the suction motor 15. The annular sealing protrusion 28 is configured to extend around the communication hole 7 and to be sealingly engaged with the partition wall 6. Advantageously, the annular sealing projection 28 covers the through hole 27.
The annular sealing projection 28 comprises an annular wall 29, which annular wall 29 is thin and curved. The annular wall 29 comprises a first curved annular surface 29.1, which first curved annular surface 29.1 is concave and is oriented towards the suction motor 15, and a second curved annular surface 29.2, which second curved annular surface 29.2 is convex and is oriented away from the suction motor 15, that is to say towards the partition wall 6.
The annular sealing projection 28 further comprises a plurality of connecting walls 31, the plurality of connecting walls 31 being angularly offset from each other and distributed around the through opening 14. Each connecting wall 31 extends from the first curved annular surface 29.1 and faces the corresponding connecting lug 26 and is fixed to this connecting lug 26 by overmoulding. Thus, each connecting wall 31 advantageously extends radially.
As shown in fig. 3, the second annular sealing portion 21 extends around the air inlet opening 17 and has an outer diameter smaller than that of the first annular sealing portion 19.
The second annular sealing portion 21 more specifically includes an annular sealing lip 32 extending transversely with respect to the central axis a of the pneumatic sealing element 18 and configured to sealingly engage the suction motor 15 and more specifically the ventilator cover 16.
The annular sealing lip 32 is configured to abut against the suction motor 15 when the suction motor 15 is at a standstill, and to sealingly abut against and remain against the suction motor 15 when the suction motor 15 is energized and suction flow is generated. In other words, when the suction motor 15 is energized and suction flow is generated, the resultant of the forces exerted on the annular sealing lip 32 causes the annular sealing lip 32 to sealingly abut and remain against the suction motor 15.
According to the embodiment shown in the figures, the annular sealing lip 32 comprises an annular sealing rib 33, which annular sealing rib 33 is configured to sealingly cooperate with the suction motor 15. The annular sealing rib 33 is advantageously arranged at the peripheral edge of the annular sealing lip 32 and extends substantially parallel to the central axis a of the pneumatic sealing element 18.
As shown in fig. 8, the second annular sealing portion 21 further comprises support ribs 34, which support ribs 34 extend from the annular sealing lip 32 and are configured to abut the suction motor 15 and, for example, against the outer surface of the ventilator cover 16. Advantageously, the support rib 34 extends around the air inlet opening 17 and radially with respect to the central axis a of the pneumatic sealing element 18. The support rib 34 is more specifically configured to raise the annular sealing lip 32 upstream of the annular sealing rib 33 so as to distribute the pressure exerted on the annular sealing lip 32 in the vicinity of the annular sealing rib 33 when the suction motor 15 is energized and suction flow is generated. According to the embodiment shown in the figures, the support rib 34 extends on the one hand to the annular sealing rib 33 and on the other hand to the inner circumferential edge of the annular sealing lip 32.
As shown more particularly in fig. 6, the annular intermediate portion 22 of the pneumatic sealing element 18 comprises a first tubular portion 35 extending from the first annular sealing portion 19 towards the suction motor 15 and a second tubular portion 36 extending from the second annular sealing portion 21 away from the suction motor 15. The first and second tubular portions 35, 36 are concentric with the central axis a of the pneumatic sealing element 18 and are axially offset relative to each other. Advantageously, the second tubular portion 36 is radially inside the first tubular portion 35, and the first tubular portion 35 and the second tubular portion 36 partially overlap in the axial direction.
The annular intermediate portion 22 further comprises an annular connecting portion 37, which annular connecting portion 37 is located between the first tubular portion 35 and the second tubular portion 36 and connects the first tubular portion 35 and the second tubular portion 36 to each other so as to define two annular folds 38, 39 concentric with the central axis a of the pneumatic sealing element 18. The two annular folds 38, 39 are advantageously oriented in two opposite directions, so that the annular intermediate portion 22 has a substantially Z-shaped longitudinal section.
According to the embodiment shown in the figures, the annular intermediate portion 22 further comprises a plurality of radial folds 41, the plurality of radial folds 41 being oriented substantially radially with respect to the central axis a of the pneumatic sealing element 18 and advantageously each extending substantially 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 and a convex surface 41.2, the concave surface 41.1 being oriented towards the outside of the pneumatic sealing element 18 and the convex surface 41.2 being oriented towards the inside of the pneumatic sealing element 18.
According to the embodiment shown in the figures, each radial fold 41 is advantageously arranged partly on the second tubular portion 36 and partly on the annular connecting portion 37.
The inhalation device 12 further comprises (see in particular figures 9 and 10) a suspension system 43, which suspension system 43 is configured to support the inhalation motor 15. The suspension system 43 more specifically comprises a support 44 fixed to the suction motor 15 and a plurality of damping elements 45 interposed between the support 44 and the motor housing 13 and distributed around the suction motor 15.
The support 44 may for example comprise an annular support portion 44.1, which annular support portion 44.1 extends around the suction motor 15, a rear portion 44.2 extending at the rear of the suction motor 15, and connecting branches 44.3 extending longitudinally and connecting the annular support portion 44.1 to the rear portion 44.2. Advantageously, the support 44 may thus define a housing in which the suction motor 15 is mounted.
Advantageously, each damping element 45 has a substantially S-shaped cross section and comprises a first fixed portion 45.1 and a second fixed portion 45.2, the first fixed portion 45.1 being fixed to the motor housing 13, for example to the rear fairing 13.2, the second fixed portion 45.2 being fixed to the support 44. The suspension system 43 may for example comprise four damping elements 45, which damping elements 45 are regularly distributed around the suction motor 15.
According to the embodiment shown in the figures, the suspension system 43 further comprises a compensation spring 46, which compensation spring 46 is configured to compensate for the weight of the suction motor 15. The compensation spring 46 may be located, for example, above the suction motor 15 and be formed by a tension spring. According to one embodiment variant, the compensation spring 46 may be located below the suction motor 15 and be formed by a compression spring.
The compensation spring 46 is more specifically interposed between the support 44 and the motor housing 13. The compensation spring 46 thus advantageously comprises a first end 46.1 and a second end 46.2, the first end 46.1 being fixed to the motor housing 13, for example to the rear fairing 13.2, the second end 46.2 being fixed to the support 44.
Of course, the invention is in no way limited to the described and illustrated embodiments given by way of example. Modifications can be made without departing from the scope of protection of the invention, in particular from the point of view of the construction of the various elements or by substitution of technical equivalents.
Claims (15)
1. An inhalation device (12) for a household cleaner (2), the inhalation device comprising:
a motor housing (13) comprising a through 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
-a pneumatic sealing element (18) comprising a first annular sealing portion (19) and a second annular sealing portion (21), the first annular sealing portion (19) being configured to sealingly cooperate with the motor housing (13), the second annular sealing portion (21) being configured to sealingly cooperate with the suction motor (15);
characterized in that the first annular sealing portion (19) is overmolded on the motor housing (13) and comprises an annular sealing protrusion (28), which annular sealing protrusion (28) extends around the through opening (14) and is configured to sealingly cooperate with the housing (3) of the household cleaner, which annular sealing protrusion has at least partially a hollow portion.
2. Inhalation device (12) according to claim 1, wherein the annular sealing projection (28) protrudes away from the inhalation motor (15).
3. Inhalation device (12) according to claim 1 or 2, wherein the annular sealing projection (28) has a convex front profile and a rear profile, the rear profile having at least in part a hollow shape.
4. A suction device (12) according to claim 3, wherein the annular sealing protrusion (28) comprises an annular wall (29), the annular wall (29) being curved, the annular wall (29) comprising a first curved annular surface (29.1) and a second curved annular surface (29.2) opposite the first curved annular surface (29.1), the first curved annular surface (29.1) being concave and oriented towards the suction motor (15), the second curved annular surface (29.2) being convex and oriented away from the suction motor (15).
5. The inhalation device (12) according to claim 4, wherein the annular sealing projection (28) further comprises a plurality of connecting walls (31), the plurality of connecting walls (31) being angularly offset from each other and distributed around the through opening (14), each connecting wall (31) extending from the first curved annular surface (29.1) and being fixed on the motor housing (13).
6. The inhalation device (12) according to claim 1 or 2, wherein the motor housing (13) comprises a plurality of through holes (27), the plurality of through holes (27) being angularly offset from each other and distributed around the through opening (14), the first annular sealing portion (19) being overmoulded on the motor housing (13) at the through holes (27) such that the annular sealing protrusion (28) covers the through holes (27).
7. Inhalation device (12) according to claim 6, characterised in that each through hole (27) extends in the shape of a circular arc.
8. Inhalation device (12) according to claim 6, wherein the through holes (27) are circumferentially aligned.
9. The inhalation device (12) according to claim 6 characterised in that the motor housing (13) comprises a holding portion (23) on which holding portion (23) the first annular sealing portion (19) is overmoulded, the holding portion (23) comprising an annular holding ring (24), a main holding portion (25) and connecting lugs (26), the annular holding ring (24) defining the through opening (14), the main holding portion (25) extending around the annular holding ring (24), the connecting lugs (26) connecting the annular holding ring (24) to the main holding portion (25), the connecting lugs (26) being angularly spaced apart from each other so as to form the through hole (27) together with the annular holding ring (24) and the main holding portion (25).
10. Inhalation device (12) according to claim 1 or 2, wherein the second annular sealing portion (21) is configured to sealingly abut and remain against the inhalation motor (15) when the inhalation motor (15) is powered and an inhalation flow is generated.
11. Inhalation device (12) according to claim 1 or 2, wherein the second annular sealing portion (21) has an outer diameter smaller than the outer diameter of the first annular sealing portion (19).
12. The inhalation device (12) according to claim 1 or 2, wherein the pneumatic sealing element (18) further comprises an annular intermediate portion (22), the annular intermediate portion (22) being located between the first annular sealing portion (19) and the second annular sealing portion (21), the annular intermediate portion (22) comprising a first tubular portion (35) and a second tubular portion (36), the first tubular portion (35) extending from the first annular sealing portion (19) towards the inhalation motor (15), the second tubular portion (36) extending from the second annular sealing portion (21) and away from the inhalation motor (15), the first tubular portion (35) and the second tubular portion (36) being substantially concentric and axially offset with respect to each other.
13. Inhalation device (12) according to claim 1 or 2, wherein the pneumatic sealing element (18) is configured to direct an inhalation flow from the through opening (14) to the air inlet opening (17).
14. A household vacuum cleaner (2), characterized in that it comprises an inhalation device (12) according to any one of claims 1 to 13.
15. A pneumatic sealing element (18) for a household vacuum cleaner, comprising a first annular sealing portion (19) and a second annular sealing portion (21), the first annular sealing portion (19) being configured to sealingly engage with a motor housing (13), the second annular sealing portion (21) being configured to sealingly engage with a suction motor (15), characterized in that the first annular sealing portion (19) is overmolded onto the motor housing (13) and comprises an annular sealing protrusion (28), the annular sealing protrusion (28) extending around a through opening (14) and being configured to sealingly engage with a housing (3) of the household vacuum cleaner.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1858670A FR3086157B1 (en) | 2018-09-24 | 2018-09-24 | SUCTION DEVICE FOR DOMESTIC VACUUM CLEANERS |
| FR1858670 | 2018-09-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110934539A CN110934539A (en) | 2020-03-31 |
| CN110934539B true CN110934539B (en) | 2023-06-09 |
Family
ID=65243814
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910891063.3A Active CN110934539B (en) | 2018-09-24 | 2019-09-20 | Suction device, household dust collector and pneumatic sealing element |
| CN201921568519.4U Withdrawn - After Issue CN211511626U (en) | 2018-09-24 | 2019-09-20 | Suction device, household vacuum cleaner and pneumatic sealing element |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921568519.4U Withdrawn - After Issue CN211511626U (en) | 2018-09-24 | 2019-09-20 | Suction device, household vacuum cleaner and pneumatic sealing element |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3626143B1 (en) |
| CN (2) | CN110934539B (en) |
| ES (1) | ES2959698T3 (en) |
| FR (1) | FR3086157B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3086157B1 (en) * | 2018-09-24 | 2020-09-04 | Seb Sa | SUCTION DEVICE FOR DOMESTIC VACUUM CLEANERS |
Family Cites Families (7)
| 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 |
| JP4538043B2 (en) * | 2007-11-28 | 2010-09-08 | 株式会社東芝 | Vacuum cleaner |
| EP2255711A1 (en) * | 2009-03-17 | 2010-12-01 | Koninklijke Philips Electronics N.V. | Vacuum cleaner |
| DE102014111214B4 (en) * | 2014-08-06 | 2023-04-20 | Vorwerk & Co. Interholding Gmbh | Vacuum cleaner with an electric motor for generating suction air and with a circuit board |
| PL3280307T3 (en) * | 2015-11-02 | 2019-11-29 | Koninklijke Philips Nv | A device for mounting a motor assembly of an electric appliance |
| IT201600113594A1 (en) * | 2016-11-10 | 2018-05-10 | Freudenberg Sealing Tech S A S Di Externa Italia S R L U | SEALING GROUP FOR A ROTATING ORGAN |
| FR3086157B1 (en) * | 2018-09-24 | 2020-09-04 | Seb Sa | SUCTION DEVICE FOR DOMESTIC VACUUM CLEANERS |
-
2018
- 2018-09-24 FR FR1858670A patent/FR3086157B1/en active Active
-
2019
- 2019-08-13 ES ES19191538T patent/ES2959698T3/en active Active
- 2019-08-13 EP EP19191538.8A patent/EP3626143B1/en active Active
- 2019-09-20 CN CN201910891063.3A patent/CN110934539B/en active Active
- 2019-09-20 CN CN201921568519.4U patent/CN211511626U/en not_active Withdrawn - After Issue
Also Published As
| Publication number | Publication date |
|---|---|
| ES2959698T3 (en) | 2024-02-27 |
| EP3626143B1 (en) | 2023-09-06 |
| EP3626143C0 (en) | 2023-09-06 |
| FR3086157A1 (en) | 2020-03-27 |
| EP3626143A1 (en) | 2020-03-25 |
| FR3086157B1 (en) | 2020-09-04 |
| CN211511626U (en) | 2020-09-18 |
| CN110934539A (en) | 2020-03-31 |
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