CN211511626U - Suction device, household vacuum cleaner and pneumatic sealing element - Google Patents
Suction device, household vacuum cleaner and pneumatic sealing element Download PDFInfo
- Publication number
- CN211511626U CN211511626U CN201921568519.4U CN201921568519U CN211511626U CN 211511626 U CN211511626 U CN 211511626U CN 201921568519 U CN201921568519 U CN 201921568519U CN 211511626 U CN211511626 U CN 211511626U
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- annular
- annular sealing
- motor
- suction
- sealing portion
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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 case (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), said first annular sealing portion (19) being configured to sealingly cooperate with said motor casing (13), said second annular sealing portion (21) being configured to sealingly cooperate with said suction motor (15). The first annular sealing portion (19) is overmoulded on the motor casing (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 vacuum cleaners allowing the suction of dust and small-sized waste present on the surface to be cleaned, which may be for example a tile floor, a laminate, a carpet or a carpet.
Background
A household cleaner comprises, in a known manner, a suction device comprising:
a motor housing including a through opening;
a suction motor disposed in the motor case and configured to generate a suction flow, the suction motor including an air intake opening; and
a pneumatic sealing element comprising a first annular sealing portion configured to sealingly engage with the motor housing and with the housing of the household cleaner, and a second annular sealing portion configured to sealingly engage with the suction motor.
When mounting the suction device in the housing of such a household cleaner, the pneumatic sealing element is usually subjected to a shearing movement relative to the housing of the household cleaner. However, such shearing movement can compromise the mechanical strength of the pneumatic sealing element relative to the motor housing and, therefore, compromise the seal between the motor housing and the suction motor and between the motor housing and the housing of the cleaner.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to overcoming all or part of these disadvantages.
The object of the invention is in particular to provide a suction device which ensures an easy and reliable shearing of the pneumatic sealing element on the housing of the vacuum cleaner, while having an optimum suction performance.
To this end, the present invention relates to a suction 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 intake opening; and
a pneumatic sealing element including a first annular sealing portion configured to sealingly engage with the motor housing and a second annular sealing portion configured to sealingly engage with the suction motor;
characterized in that said first annular sealing portion is overmoulded on said motor casing and comprises an annular sealing protrusion extending around said through opening and configured to sealingly cooperate with said housing of said household cleaner, said annular sealing protrusion having at least partially a hollow portion.
This configuration of the annular sealing protrusion and this overmoulding of the first annular sealing portion on the motor casing ensures an optimum seal between the housing of the vacuum cleaner and the motor casing with a minimum of overmoulding material, while ensuring an easy and reliable shear mounting of the pneumatic sealing element on the housing of the vacuum cleaner, and while ensuring an optimum flexibility of the pneumatic sealing element. In particular, the overmoulding of the first annular sealing portion on the motor casing ensures an optimal mechanical strength of the pneumatic sealing element on the motor casing. 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 shearing mounting of the pneumatic sealing element on the housing of the vacuum cleaner, with optimum suction performance.
The inhalation device may also have one or more of the following features, used alone or in combination.
According to an embodiment of the invention, the first annular sealing portion extends around the through opening.
According to an embodiment of the invention, the annular sealing protrusion protrudes away from the suction motor.
According to an embodiment of the invention, the annular sealing protrusion is flexible.
According to an embodiment of the invention, the annular sealing protrusion has a convex front profile and a rear profile, the rear profile having at least locally a hollow shape.
Such a 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 an embodiment of the present invention, the annular sealing protrusion comprises an annular wall, the annular wall being 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 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 projection allows greater flexibility in the direction of the axis of the suction motor, so as to guarantee optimum tightness by absorbing the clearance between the motor casing and the casing of the household cleaner. In addition, the annular wall can be particularly thin, which allows the pneumatic sealing element to be manufactured using a material with a higher hardness and thus ensures a better sliding of the pneumatic sealing element during its shear mounting.
According to an 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 an 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 casing.
This feature allows ensuring a better retention of the shape of the annular sealing projection and in particular prevents the annular sealing projection from returning to the installation of the device and having an inverted shape with respect to the original overmoulded shape.
According to an embodiment of the present invention, the motor case includes a front streamline portion and a rear streamline portion, and the first annular seal portion is overmolded on the front streamline portion of the motor case. Advantageously, said first annular sealing portion extends on a front face of said front fairing, said front face being located opposite said suction motor.
According to an embodiment of the present invention, the motor case includes a plurality of through holes angularly offset from each other and distributed around the through opening, the first annular sealing portion is overmolded on the motor case at the through hole such that the annular sealing protrusion covers the through hole.
Such a through hole allows passage of a mold member that defines a hollow shape of an inner wall of the annular sealing protrusion when the annular sealing protrusion is overmolded on the motor case.
According to an embodiment of the present invention, each through hole is a circular arc-shaped extension.
According to an embodiment of the invention, the through holes are circumferentially aligned.
According to an embodiment of the invention, the motor housing comprises a retaining portion on which the first annular sealing portion is overmoulded, the retaining portion comprising an annular retaining ring defining the through opening, a main retaining portion extending around the annular retaining ring, and connecting lugs connecting the annular retaining ring to the main retaining portion, the connecting lugs being angularly spaced from each other so as to form the through hole together with the annular retaining ring and the main retaining portion.
According to an embodiment of the invention, the connecting lug corresponds to the connecting wall of the annular sealing protrusion.
According to an embodiment of the invention, the connecting lug extends radially.
According to an embodiment of the present invention, the front fairing section of the motor case includes the holding portion.
According to an 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 be held against the suction motor when the suction motor is powered and generating a suction flow. In other words, when the suction motor is powered and a 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 be held against the suction motor. This configuration of the pneumatic sealing element allows to ensure the strength and the tightness of the pneumatic sealing element at the suction motor without adding any additional components and therefore to reduce the manufacturing costs of the suction device and to simplify the assembly of the suction device.
According to an embodiment of the present invention, the second annular sealing portion is configured to abut against the suction motor when the suction motor is at a stop.
According to an embodiment of the invention, the second annular sealing portion comprises an annular sealing lip extending from an annular sealing rib around 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 configured to abut against the suction motor so as to locally heighten the annular sealing lip and allow a negative pressure generated by a suction flow to be applied below the annular sealing lip up to an edge of the annular sealing rib when the suction motor is powered and generates a suction flow.
The support rib is more specifically configured to locally heighten the annular seal lip when the annular seal lip is abutted toward the suction motor by a suction flow generated by the suction motor. Thus, the suction flow can be uniformly applied up to the edge of the annular sealing rib configured to sealingly engage with the suction motor.
The support rib thus allows to distribute the pressure exerted on the annular sealing lip when the suction motor is powered and generates a suction flow, and therefore allows to improve the mechanical strength of the annular sealing lip and therefore the tightness between the pneumatic sealing element and the suction motor under the conditions of use of the suction device.
According to an embodiment of the invention, the pneumatic sealing element is integral.
According to an embodiment of the invention, the support rib extends around the air inlet opening.
According to an embodiment of the invention, the support ribs are regularly distributed around the air inlet opening.
According to an embodiment of the invention, the support rib extends to an inner peripheral edge of the annular sealing lip.
According to an embodiment of the invention, the support rib extends substantially radially with respect to a central axis of the pneumatic sealing element.
According to an embodiment of the invention, the annular sealing lip comprises an annular sealing rib configured to sealingly cooperate with the suction motor.
According to an embodiment of the invention, the annular sealing rib is arranged at a 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 an embodiment of the invention, the support rib extends to or near the annular sealing rib.
According to an 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 an embodiment of the invention, the annular sealing lip extends transversely with respect to the central axis of the pneumatic sealing element.
According to an 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 with respect to each other.
According to an embodiment of the invention, at least a part of the first tubular part is located opposite the second tubular part. In other words, the first tubular portion and the second tubular portion at least partially overlap in the axial direction.
According to an embodiment of the invention, the second tubular portion is radially located within the first tubular portion.
According to an embodiment of the invention, the first annular sealing portion and the second annular sealing portion are axially offset with respect to each other.
According to an embodiment of the invention, the annular intermediate portion comprises at least one radial fold oriented substantially radially with respect to the central axis of the pneumatic sealing element and at least one annular fold 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 therefore to significantly reduce the transmission of the vibrations generated by the electromagnetic forces generated by the operation of the suction motor and by the interaction between the rotor and the stator of the suction motor to the housing of the vacuum cleaner, while the at least one annular fold allows to increase the flexibility of the pneumatic sealing element in the radial direction and therefore to significantly reduce the transmission of the vibrations generated by the unbalance of the suction motor to the housing of the vacuum cleaner.
According to an embodiment of the invention, the annular intermediate portion further comprises an annular connecting portion located between and connecting the first and second tubular portions to each other so as to define the at least one annular fold.
According to an embodiment of the invention, the annular connection 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 connection portion further increases the flexibility of the pneumatic sealing element and therefore further limits the transmission of the vibrations generated by the suction motor to the housing of the household cleaner.
According to an 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 at least partially arranged on the second tubular portion.
According to an embodiment of the invention, the at least one radial fold is at least partially arranged on the second tubular portion and at least partially on the annular connecting portion.
According to an 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 an embodiment of the invention, the annular intermediate portion comprises a plurality of radial folds which are substantially radially oriented with respect to the central axis of the pneumatic sealing element and are angularly offset from each other and distributed around the central axis, and for example regularly distributed around the central axis.
According to an 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 an embodiment of the present invention, the through opening is provided on the front fairing section.
According to an embodiment of the present invention, the suction motor includes a ventilator and a motor configured to drive the ventilator to rotate.
According to an 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 an embodiment of the present invention, 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 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 vacuum cleaner and thus ensures improved decoupling of the suction motor with respect to the housing of the vacuum cleaner.
According to an embodiment of the invention, the suspension system further comprises at least one compensation spring configured to compensate the weight of the suction motor. Such a compensation spring in particular allows 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 an embodiment of the invention, the pneumatic sealing element is made of an elastomer.
According to an embodiment of the invention, the pneumatic sealing element is configured to guide an inhalation flow from the through opening to the air inlet opening.
The utility model also relates to a household vacuum cleaner, which comprises a suction device according to any one of the above features.
According to an embodiment of the present invention, the household vacuum cleaner includes a housing including a filtering compartment and a motor compartment, the filtering compartment and the motor compartment being separated by a partition wall provided with a communication hole, the first annular seal portion being configured to sealingly engage with the partition wall.
According to an embodiment of the invention, the annular sealing protrusion is configured to extend around the communication hole and sealingly engage with the partition wall.
Advantageously, the pneumatic sealing element is configured to guide a suction flow generated by the suction motor from the communication hole to the air intake opening.
The present 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 overmoulded on the motor housing and comprises an annular sealing protrusion surrounding the 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 an air inlet opening provided on a motor housing through an opening to 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 extending around the air inlet opening and a support rib extending from the annular sealing lip and configured to abut against the inhalation motor and, for example, against an outer surface of the ventilator cover, and the annular sealing lip is configured to sealingly abut and be held against the suction motor when the suction motor is powered and generating a suction flow.
Drawings
The invention will be better understood with the aid of the following description with reference to the accompanying drawings, which show, by way of non-limiting example, embodiments of an inhalation device.
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 home cleaner of fig. 1.
Figure 3 is a perspective view, partially cut away, of a suction device belonging to the cleaner of figure 1.
Figure 4 is an exploded perspective view of the inhalation device of figure 3.
Figure 5 is a rear perspective view of the front fairing and the pneumatic sealing element belonging to the inhalation device of figure 3.
FIG. 6 is a longitudinal cross-sectional view of the forward fairing and 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 fairing and a suction motor belonging to the suction device of fig. 3.
Fig. 10 is a rear view of the front fairing and suction motor of fig. 9.
Detailed Description
Fig. 1 to 10 show a household cleaner 2, which household cleaner 2 comprises, in particular, a casing 3, also called cleaner body, which casing 3 comprises, in a known manner, a filtering compartment 4 and a motor compartment 5, said filtering compartment 4 and said motor compartment 5 being separated by a partition wall 6 provided with a communication hole 7. The filtering compartment 4 is intended to receive filtering means (not shown in the figures), such as a filter bag or cyclonic separating means, which allow the retention of the waste sucked into the casing 3.
The housing 3 further comprises an air inlet 8 through which air conveying the waste is drawn into the housing 3, and an air outlet 9 through which air previously cleaned of waste by the filter means is expelled from the housing 3. The housing 3 is advantageously equipped with wheels 11 to ensure the 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 a suction attachment (not shown in the figures), such as a rigid telescopic tube which can receive a removable suction head at its end opposite the flexible tube.
The household cleaner 2 further comprises a suction device 12, which suction device 12 is accommodated in the motor compartment 5. The suction device 12 includes a motor housing 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 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 suction device 12 further comprises a suction motor 15, also referred to as an electric ventilator, which suction motor 15 is arranged in the motor housing 13 and is configured to generate a suction flow. In a known manner, the suction motor 15 comprises a ventilator and an electric motor configured to drive the ventilator in rotation. The suction motor 15 may further comprise a ventilator cover 16, which ventilator cover 16 at least partly 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 configured to guide the inhalation flow from the through opening 14 to the air inlet opening 17.
As shown more particularly in fig. 6 to 8, the pneumatic sealing element 18 is annular and flexible, and comprises 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 cooperate with the motor casing 13, the second annular sealing portion 21 being configured to sealingly cooperate with 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, the first annular sealing portion 19 extends around the through opening 14 and is overmoulded on the front fairing 13.1 of the motor casing 13. Advantageously, the first annular sealing portion 19 extends on the front face of the frontal fairing 13.1, which is located opposite the suction motor 15.
As shown in fig. 5 and 6, the forward fairing 13.1 includes a retaining portion 23 over which the first annular sealing portion 19 is over-molded. 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, the connecting lugs 26 connecting the annular retaining ring 24 to the main retaining portion 25. Advantageously, the connecting lugs 26 extend radially and are angularly spaced apart from one another so as to form, together with the annular retaining ring 24 and the main retaining portion 25, through holes 27, which through holes 27 are angularly offset from one another and are 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 seal portion 19 includes an annular seal projection 28, the annular seal projection 28 extending around the through opening 14 and projecting relative to the suction motor 15. The annular seal projection 28 is configured to extend around the communication hole 7 and sealingly engage with the partition wall 6. Advantageously, the annular sealing protrusion 28 covers the through hole 27.
The annular sealing protrusion 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 and a second curved annular surface 29.2, 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, that is to say, towards the partition wall 6.
The annular sealing protrusion 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 a respective 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 that is smaller than the outer diameter of the first annular sealing portion 19.
The second annular sealing portion 21 more specifically includes an annular sealing lip 32, the annular sealing lip 32 extending transversely with respect to the central axis a of the pneumatic sealing element 18 and configured to sealingly engage with the suction motor 15, and more specifically with the ventilator cover 16.
The annular seal lip 32 is configured to abut against the suction motor 15 when the suction motor 15 is at a stop, and to sealingly abut against and be held against the suction motor 15 when the suction motor 15 is powered and generates a suction flow. 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 hold against the suction motor 15.
According to the embodiment shown in the figures, the annular sealing lip 32 comprises an annular sealing rib 33, this annular sealing rib 33 being configured to sealingly cooperate with the suction motor 15. The annular sealing rib 33 is advantageously arranged at the outer 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 seal portion 21 also includes support ribs 34, these support ribs 34 extending from the annular seal lip 32 and being configured to abut against 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 heighten the annular seal lip 32 upstream of the annular seal rib 33 so as to distribute the pressure exerted on the annular seal lip 32 in the vicinity of the annular seal rib 33 when the suction motor 15 is energized and generates a suction flow. 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 peripheral 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 and a second tubular portion 36, the first tubular portion 35 extending from the first annular sealing portion 19 towards the suction motor 15, the 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 with respect to each other. 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 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 and second tubular portions 35, 36 and connects the first and second tubular portions 35, 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 median portion 22 has a substantially Z-shaped longitudinal section.
According to the embodiment shown in the figures, the annular median portion 22 also comprises a plurality of radial folds 41, the plurality of radial folds 41 being substantially radially oriented 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 advantageously are 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 connection portion 37.
The suction device 12 further comprises (see in particular fig. 9 and 10) a suspension system 43, which suspension system 43 is configured to support the suction motor 15. The suspension system 43 comprises more specifically a support 44 fixed to the suction motor 15 and a plurality of damping elements 45, the plurality of damping elements 45 being interposed between the support 44 and the motor casing 13 and distributed around the suction motor 15.
The support 44 may for example comprise an annular support portion 44.1, a rear portion 44.2 and connecting branches 44.3, the annular support portion 44.1 extending around the suction motor 15, the rear portion 44.2 extending at the rear of the suction motor 15, the 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 fixing portion 45.1 and a second fixing portion 45.2, the first fixing portion 45.1 being fixed to the motor casing 13, for example to the rear fairing 13.2, the second fixing portion 45.2 being fixed to the support 44. The suspension system 43 may for example comprise four damping elements 45, the four damping elements 45 being 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, the compensation spring 46 being configured to compensate the weight of the suction motor 15. The compensation spring 46 can be located, for example, above the suction motor 15 and be formed by an extension spring. According to one embodiment variant, the compensation spring 46 can 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 case 13. The compensating spring 46 therefore 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, and 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, in particular from the point of view of the construction of the various elements or by replacing technical equivalents, without however departing from the scope of protection of the present invention.
Claims (15)
1. An intake device for a household vacuum cleaner (2), comprising:
a motor case (13) including 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) including 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), said first annular sealing portion (19) being configured to sealingly cooperate with said motor casing (13), said second annular sealing portion (21) being configured to sealingly cooperate with said suction motor (15);
characterized in that said first annular sealing portion (19) is overmoulded on said motor casing (13) and comprises an annular sealing protrusion (28), said annular sealing protrusion (28) extending around said through opening (14) and being configured to sealingly engage with a casing (3) of said household cleaner, said annular sealing protrusion having at least partially a hollow portion.
2. An inhalation device according to claim 1 characterised in that the annular sealing projection (28) projects away from the inhalation motor (15).
3. An inhalation device according to claim 1 or 2 characterised in that the annular sealing projection (28) has a convex front and rear contour, the rear contour having at least in sections a hollow shape.
4. An inhalation device according to claim 3 characterised in that 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 inhalation motor (15), the second curved annular surface (29.2) being convex and oriented away from the inhalation motor (15).
5. An inhalation device according to claim 4 characterised in that the annular sealing protrusion (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. An inhalation device according to claim 1 or 2 characterised in that 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) so that the annular sealing protrusion (28) covers the through holes (27).
7. An inhalation device according to claim 6 characterised in that each through-hole (27) extends in the shape of a circular arc.
8. An inhalation device according to claim 6 characterised in that the through-holes (27) are circumferentially aligned.
9. The inhalation device according to claim 6 wherein the motor housing (13) comprises a retaining portion (23) over which the first annular sealing portion (19) is overmolded, the retaining portion (23) comprising 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), the connecting lugs (26) connecting the annular retaining ring (24) to the main retaining portion (25), the connecting lugs (26) being angularly spaced from each other so as to form the through holes (27) together with the annular retaining ring (24) and the main retaining portion (25).
10. An inhalation device according to claim 1 or 2 characterised in that the second annular sealing portion (21) is configured to sealingly abut against and be held against the suction motor (15) when the suction motor (15) is powered and generates a suction flow.
11. An inhalation device according to claim 1 or 2 characterised in that the second annular seal portion (21) has an outer diameter which is smaller than the outer diameter of the first annular seal portion (19).
12. An inhalation device according to claim 1 or 2 characterised in that 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. An inhalation device according to claim 1 or 2 characterised in that the pneumatic sealing element (18) is configured to guide the inhalation flow from the through opening (14) to the air inlet opening (17).
14. A household vacuum cleaner, characterized in that it comprises a suction device (12) according to any one of claims 1 to 13.
15. A pneumatic sealing element 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 cooperate with a motor casing (13), the second annular sealing portion (21) being configured to sealingly cooperate with a suction motor (15), characterized in that the first annular sealing portion (19) is overmoulded on the motor casing (13) and comprises an annular sealing protrusion (28), the annular sealing protrusion (28) extending around a through opening (14) and being configured to sealingly cooperate 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 (1)
| Publication Number | Publication Date |
|---|---|
| CN211511626U true CN211511626U (en) | 2020-09-18 |
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 Before (1)
| 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 |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3626143B1 (en) |
| CN (2) | CN110934539B (en) |
| ES (1) | ES2959698T3 (en) |
| FR (1) | FR3086157B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110934539A (en) * | 2018-09-24 | 2020-03-31 | Seb公司 | Suction device, household vacuum cleaner and pneumatic sealing element |
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 EP EP19191538.8A patent/EP3626143B1/en active Active
- 2019-08-13 ES ES19191538T patent/ES2959698T3/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
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110934539A (en) * | 2018-09-24 | 2020-03-31 | Seb公司 | Suction device, household vacuum cleaner and pneumatic sealing element |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3626143A1 (en) | 2020-03-25 |
| EP3626143B1 (en) | 2023-09-06 |
| ES2959698T3 (en) | 2024-02-27 |
| FR3086157A1 (en) | 2020-03-27 |
| CN110934539A (en) | 2020-03-31 |
| FR3086157B1 (en) | 2020-09-04 |
| CN110934539B (en) | 2023-06-09 |
| EP3626143C0 (en) | 2023-09-06 |
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