Mask system and mask

Abstract

A mask and a mask system are provided. The mask system has a magnetic coupling device for coupling the powered fan to the filter portion of the mask. The mask also includes a retainer for retaining the separable magnetic portion of the coupling device in a stable position relative to the filter to position the coupling device relative to the filter. For example, the holder is provided by a pouch. The pouch may also include securing means to position and secure the separable magnetic portion within the pouch, such as by complementary shape features of the pouch and the separable magnetic portion, such as by features that provide interlocking action or interlocking geometry between respective portions or entirety of the pouch and the separable magnetic portion.

Description

Technical Field

[0001] The present invention relates to a face mask for providing pollutant filtration. Background Art

[0002] Air pollution is a worldwide concern. It is estimated by the World Health Organization (WHO) that 4 million people die each year from air pollution. This problem is partly due to the outdoor air quality in cities. Nearly 300 cities with severe haze do not meet the national air quality standards.

[0003] Official outdoor air quality standards define particulate matter concentration as the mass per unit volume (e.g., μg / m 3 ). Particular concern is given to pollution caused by particles smaller than 2.5 μm in diameter (referred to as "PM2.5") because such particles can penetrate into the gas exchange region (alveoli) of the lungs, and very small particles (<100 nm) can pass through the lungs and affect other organs.

[0004] Since this problem cannot be significantly improved in a short time, a common way to solve this problem is to wear a face mask, which provides cleaner air through filtration. In recent years, there has been a significant increase in the face mask market in China and elsewhere.

[0005] These face masks can be made of materials that act as pollutant particle filters, or can have filters only for part of the mask surface, and the filters can be replaced when clogged.

[0006] However, during use, the temperature and relative humidity inside the face mask increase, combined with the pressure difference inside the face mask relative to the outside, making breathing very uncomfortable. This can be partially alleviated by setting an outlet valve or a check valve, which allows exhaled air to escape from the face mask with very little resistance, but requires inhaled air to be suctioned through the filter. To improve comfort and effectiveness, a fan can be added to the face mask, which suctions air through the filter and / or provides assistance during exhalation.

[0007] One possible benefit for the wearer using a fan-powered face mask is that it can relieve the slight strain on the lungs caused by inhaling against the resistance of the filter in a traditional non-powered face mask. In addition, in a traditional non-powered face mask, inhalation also causes a slight pressure drop inside the face mask, which can lead to leakage of pollutants into the face mask, and if the pollutant is toxic, this leakage can prove to be dangerous.

[0008] In one arrangement, an intake (i.e., suction) fan can be used to provide continuous air inhalation. In this way, the slight strain on the lungs previously mentioned due to inhaling against the resistance of the filter in a traditional non-powered mask can be alleviated. Then, a steady airflow can be provided to the face, and a slight positive pressure can be provided, for example, to ensure that any leakage is outwards rather than inwards. However, this creates additional resistance to breathing during exhalation.

[0009] In another arrangement, an exhaust (i.e., exhalation) fan can be used to provide continuous air release. Conversely, this provides breathing assistance during exhalation. The exhaust fan can be combined with a series check valve such that no airflow can enter the mask through the fan.

[0010] The fan also forms a continuous airflow through the mask. Air is inhaled into the mask volume through the filter by the flow caused by the fan. This improves wearing comfort.

[0011] Another alternative is to provide both an intake fan and an exhaust fan, and to time the fan control in synchronization with the user's breathing cycle. The breathing cycle can be measured based on pressure (or pressure difference) measurements. This provides improved temperature and humidity control, and reduces the breathing resistance for both inhalation and exhalation.

[0012] Thus, there are several types of masks that can be used to prevent exposure to daily air pollutants, including passive masks, passive masks with an exhalation valve, and masks with at least one active fan.

[0013] The present invention particularly relates to an active mask with a fan. One problem is that the mask filter needs to be cleaned or replaced regularly. The fan is typically formed such that a seal is formed between the fan and the mask filter. To separate the fan from the mask filter, this seal needs to be released because the fan (especially its associated electrical and electronic components) is not suitable for cleaning and does not need to be replaced regularly like the filter.

[0014] There are known solutions for releasably coupling the fan to the mask at the operating position with the filter. These solutions involve using a mechanical connector module that provides a connection structure with grooves or members to engage with a complementary connection structure on the mask filter. However, in the known solutions, the connector module is permanently fixed to the filter member 14 such that when the filter is replaced, the connector module is discarded together with the filter member 14.

[0015] This means that the known solutions require discarding and replacing the connector module every time the filter is cleaned or replaced.

[0016] Accordingly, it is beneficial to provide a connection system that allows a fan to be releasably coupled to a face mask filter, thereby eliminating the need to discard physical connection components each time the filter is replaced. SUMMARY OF THE INVENTION

[0017] The invention is defined by the claims.

[0018] According to an example aspect of the invention, there is provided a face mask system including: a face mask including a filter portion that includes filter material for filtering air passing between an inner side and an outer side of the face mask, the inner side of the face mask facing a user's face during use; a fan module that, when the face mask is in an assembled state, is fluidly arranged in series with the filter portion in use for driving air through the filter portion; a magnetic coupling that releasably couples the fan module to the filter portion at a position where the fan module is fluidly arranged in series with the filter portion, wherein the magnetic coupling includes a second magnetic portion and a first magnetic portion that are magnetically attracted to each other. The second magnetic portion is included by the fan module. The first magnetic portion is separated from the fan module. The face mask further includes a retainer for removably receiving the first magnetic portion and positioning the first magnetic portion relative to the filter portion.

[0019] In the case where the first magnetic portion is received in the retainer, the magnetic attraction between the second magnetic portion and the first magnetic portion allows the fan module to be magnetically coupled to the filter portion. The fan module will be able to be coupled to the filter portion at a position defined by the position of the first magnetic portion on the face mask. Since the position of the first magnetic portion is determined by the positioning of the retainer, the retainer effectively provides an alignment function for the coupling of the fan to the face mask.

[0020] Using a magnetic coupling solves the problem of providing a releasable coupling that does not require a permanently attached connection component on the filter. Instead, the fan can be separated from the filter by applying a force that resists the magnetic attraction of the first magnetic component. However, the inventors recognized that magnetic couplings can create new problems in terms of usability and product design because the user will need to carefully align the first and second magnetic portions relative to each other and relative to the surface area of the filter. The user may not know the optimal positioning for the fan module or may not be able to correctly achieve the required alignment, such as aligning the outer layer of the face mask with the position of the fan after placement. Aligning the two parts of the magnetic coupling with each other can also be a challenge.

[0021] Accordingly, in recognition of this potentially new problem, in accordance with embodiments of the present invention, the inventors propose to provide a retainer, such as a material flap, such as a bag or a strip, to accommodate and hold a first magnetic part relative to a filter such that a user does not need to determine the correct positioning of the first magnetic part. In this way, the first magnetic part can be held in place and positioned by defining the placement of the first magnetic part on the filter. This avoids the user incorrectly placing the magnetic part and thereby coupling the fan module to an incorrect position on the filter. When the filter needs to be replaced or cleaned, the fan module can simply be pulled away from the filter and the first magnetic part removed from the retainer. Once the filter is cleaned or a replacement filter is provided, the first magnetic part can be placed back into the retainer of the cleaned filter or into the retainer of a new filter, and the fan re-coupled and the face mask reassembled.

[0022] It should be appreciated that the inventive concept can be implemented as a separate face mask that includes a retainer for holding a first magnetic part, or as such a face mask that further includes the first magnetic part, or as a face mask system that includes a face mask and a fan module. Accordingly, each of these can be provided as a separate aspect of the present invention.

[0023] In any case, with respect to the retainer, it is preferably included by the filter part.

[0024] The retainer can be a retaining structure. The retaining structure can be attached to the filter part, for example, to the surface of the filter part.

[0025] The retainer can be formed by a flap (such as a material flap) that is attached to the surface of the filter part.

[0026] In some embodiments, the retainer is a bag or a strip.

[0027] In some embodiments, the retainer is provided on the inner side of the filter part, and the fan module is for attachment at a position on the outer side of the filter part corresponding to the position of the retainer on the inner side of the filter part.

[0028] Alternatively, the retainer can be provided on the same side (outer side) as the fan module.

[0029] In some embodiments, the retainer defines an access opening located at one side that allows insertion and removal of the first magnetic part.

[0030] In some embodiments, the retainer is a bag, and the bag includes a fixing device for reversibly fixing the access opening in a closed state to prevent detachment of the magnetic part when so closed.

[0031] In some embodiments, the retainer includes means for positioning and fixing the first magnetic part within the retainer, such as means for rotatably fixing the first magnetic part within the retainer. The retainer can be a bag. The means can include means for providing an interlocking geometry or interlocking action between at least a portion of the first magnetic part and at least a portion of the bag. The means for positioning and fixing the first magnetic part can be referred to as a fixing structure, which is configured to position the first magnetic part rotatably.

[0032] In some embodiments, the means for positioning and fixing the first magnetic part within the retainer is provided by complementary shape features of the first magnetic part and the retainer. These features can be, respectively, complementary outer and inner shapes of the first magnetic part and the retainer. These features can be, respectively, complementary concave / convex mating portions of the first magnetic part and the retainer.

[0033] More specifically, in some embodiments, the retainer (such as a bag) has an (inner) shape and / or dimensions that are complementary to the outer shape and / or dimensions of the first magnetic part, such that when the first magnetic part is received within the retainer, the boundaries of the retainer serve to hold the first magnetic part in a fixed / stable position, thereby positioning the first magnetic part relative to the filtering part. Thus, this provides an example of means for positioning and fixing the first magnetic part within the retainer using complementary shape features of the first magnetic part and the retainer. The complementary mating shapes provide an interlocking geometry.

[0034] Additionally or alternatively, in some embodiments, the first magnetic part includes a tab that projects from an edge for rotatably fixing or positioning the first magnetic part within the retainer. The retainer can be a bag. The tab can extend coplanarly with the plane defined by the first magnetic part. For example, the first magnetic part can be in an annular shape, and wherein the tab extends coplanarly with the plane defined by the ring of the first magnetic part.

[0035] In some embodiments, the retainer is a bag and includes a tab receiving opening (through the wall of the bag) in one side, which is arranged to allow the projecting portion of the tab to pass through the tab receiving opening when the first magnetic part is received within the bag. The opening can have a shape and dimensions complementary to the tab, such that when the tab is received through the opening, the first magnetic part is rotatably positioned or fixed within the bag. In other words, the fixing structure previously mentioned as being included in the retainer can take the form of a second opening of the retainer, and wherein the first magnetic part is configured with a tab corresponding to the position of the second opening.

[0036] Thus, this provides another example of means for positioning and fixing the first magnetic part within the bag using complementary shape features of the first magnetic part and the bag. The complementary shapes of the tab and the tab receiving opening provide an interlocking geometry.

[0037] In some embodiments, at least the first magnetic portion defines an annular shape that bounds a central opening region. In some embodiments, additionally or alternatively, the second magnetic portion defines an annular shape that bounds a central opening region. For example, the first magnetic portion may be in the form of a ring that defines a central opening region. For example, the ring may be a flat ring.

[0038] In some embodiments, the central opening region may have a first portion and a second portion, wherein the retainer covers the first portion of the central opening region, whereby the flow resistance of the second portion of the central opening region is lower than the flow resistance of the first portion of the central opening region.

[0039] In some embodiments, the first magnetic portion and the second magnetic portion are configured such that when magnetically coupled to each other, at least the air input / output region of the fan module is aligned with the central opening region defined by the first magnetic portion.

[0040] In some embodiments, in the case where the mask system is in an assembled state, the retainer is disposed on the opposite side of the filter portion compared to the fan module.

[0041] In some embodiments, the mask further includes an upper panel and a lower panel, the upper panel and the lower panel being disposed on the same side of the filter portion to which the retainer is attached, wherein the upper panel includes flaps that can be folded along the lower edge, and the lower panel includes flaps that can be folded along the upper edge, and wherein the upper panel and the lower panel can be folded to cover or not cover the retainer, so as to cover or not cover the magnetic portion when the magnetic portion is received in the retainer.

[0042] In some embodiments, the mask further includes an upper panel and / or a lower panel, wherein the lower edge of the upper panel is connected to the filter portion, and the upper edge of the lower panel is connected to the filter portion, and wherein, when using the mask, the retainer is in a position suitable for fixing the magnetic portion to the retainer relative to the upper edge of the lower panel and / or the lower edge of the upper panel.

[0043] As an example, in some embodiments, the upper panel and the lower panel may be formed by the filter portion, or may be formed by different elements / components. If formed by the filter portion, the filter portion may be folded on the upper side to form the upper panel, and / or the filter portion may be folded on the lower side to form the lower panel. In some embodiments, in the case where the retainer includes a fixing structure in the form of a second opening (as described above), the lower panel and / or the upper panel may be configured to fold towards the second opening to hold the first magnetic portion.

[0044] In some embodiments, when using a face mask, the face mask (e.g., the facial portion of the face mask) has a bending line in a generally vertical direction. The retainer can be positioned relative to the bending line such that the bending line is used to hold / fix the magnetic portion in the retainer to prevent the magnetic portion from detaching during use of the face mask. For example, the retainer can be positioned relative to the bending line such that the bending line is used to block / interrupt the lateral movement of the magnetic portion away from the retainer, thereby partially holding the magnetic portion in the retainer, i.e., helping to prevent the magnetic portion from detaching during use of the face mask.

[0045] For example, in some embodiments, the face mask (e.g., the filtering portion of the face mask) can have a facial portion, wherein when the face mask is in use, the facial portion has a bending line in a generally vertical direction, and wherein the bending line engages the first opening to fix / hold the first magnetic device in the retainer, i.e., prevent the first magnetic portion from detaching during use of the face mask.

[0046] In some embodiments, when using a face mask, the face mask (e.g., the filtering portion of the face mask) can have a bending line in a generally vertical direction, and wherein the bending line engages the first opening to fix / hold the first magnetic device and prevent the first magnetic portion from detaching during use of the face mask.

[0047] In some embodiments, at least the first magnetic portion defines an annular shape defining a central opening region having a first portion and a second portion, wherein when the first magnetic portion is received in the retainer, the retainer covers the first portion of the central opening region, and the second portion of the first magnetic portion is exposed on the inner or outer surface of the filtering portion, whereby the flow resistance of the first portion is higher than that of the second portion.

[0048] As previously described, one aspect of the present invention is a face mask system including a face mask having a retainer for a first magnetic portion of a magnetic coupler, used in combination with the magnetic coupler and in combination with a fan. Another aspect of the present invention is a separate face mask having a retainer. Another embodiment of this aspect of the present invention is the aforementioned face mask used in combination with the first portion of the magnetic coupler, which first portion is received in the retainer. Another embodiment of this aspect of the present invention is the aforementioned face mask used in combination with two portions of the magnetic coupler.

[0049] The inventive concept can also be implemented in the form of a kit including various separable components of the aforementioned face mask or face mask system, but these components are in a non-assembled state. For example, the kit can include the aforementioned face mask, filtering portion, fan module, and / or the first magnetic portion of the magnetic coupler.

[0050] Any option, feature, or embodiment of the face mask system of the present invention described above can be incorporated as an embodiment of any other aspect of the present invention. For example, a feature related to the construction or structure of the retainer can be incorporated as part of an embodiment of the face mask aspect of the present invention.

[0051] By way of a more explicit overview, one aspect of the present invention provides a face mask. The face mask can be used in a face mask system that includes the face mask and a fan module that can be releasably coupled to the face mask. The face mask according to at least one set of embodiments includes: a filter portion that includes filter material to filter air passing between the inner side and the outer side of the face mask, the inner side of the face mask facing the user's face during use. The face mask further includes a retainer that is configured on the inner or outer side of the filter portion. The retainer can be used to hold a magnetic portion of a magnetic coupling on the inner or outer side of the filter portion. This can be used to magnetically couple the fan module to the filter portion. For example, this can be used to magnetically couple the fan module to the filter portion, where the fan module includes a second magnetic portion of the magnetic coupling, and the first magnetic portion and the second magnetic portion are magnetically attracted to each other.

[0052] As an example, the face mask can be used in a face mask system that includes the face mask and a fan module that can be releasably coupled to the face mask, and further includes a magnetic coupling that is used to releasably couple the fan module to the filter portion at a position where the fan module is in fluid series with the filter portion, where the magnetic coupling includes a first magnetic portion and a second magnetic portion, and the first magnetic portion and the second magnetic portion are magnetically attracted to each other.

[0053] Optionally, the retainer can be formed by a material flap attached to the filter portion, such as a material flap forming a pocket or a band.

[0054] The retainer can have an access opening that is configured to receive the magnetic portion in the retainer.

[0055] In some embodiments, the retainer is used to hold a magnetic portion that is in the form of an annular member, such as a ring defining a central opening region. The ring can be a flat ring, such as an annular disc.

[0056] In some embodiments, when the face mask is oriented for normal use, the retainer is used to hold / support the magnetic portion against gravity when the magnetic portion is received in the retainer.

[0057] In some embodiments, the retainer is attached to the filter portion by at least an upper engagement edge and a lower engagement edge, where the material flap extends between the upper engagement edge and the lower engagement edge.

[0058] In some embodiments, the face mask further includes an upper panel and a lower panel, which are disposed on the same side of the filter portion to which the retainer is attached. The upper panel includes flaps that can be folded along the lower edge, and the lower panel includes flaps that can be folded along the upper edge. The upper panel and the lower panel can be folded to cover or not cover the retainer, so that when the magnetic portion is received in the retainer, the magnetic portion is covered or not covered. This further helps to hold the magnetic portion in the retainer.

[0059] For example, in some embodiments, a portion of the face mask (such as the filter portion) can be folded on the upper side to form the upper panel, and / or folded on the lower side to form the lower panel. In some embodiments, when the retainer includes a fixing structure in the form of a second opening (as described above), the lower panel and / or the upper panel can be configured to fold towards the second opening to hold the first magnetic portion.

[0060] For example, the upper panel and the lower panel can be material flaps that are open at the lower edge and are sized and shaped to be located above the top of the retainer during normal use to further help hold the magnetic portion in place.

[0061] In some embodiments, the face mask further includes a magnetic portion of a magnetic coupling member held by the retainer.

[0062] In some embodiments, the retainer is a bag, and the bag defines an access opening at one side, which allows insertion and removal of the magnetic portion.

[0063] In some embodiments, the retainer includes an access opening at one side, which allows insertion and removal of the magnetic portion; and a second opening at the opposite side, the size of the second opening being smaller than that of the access opening. The second opening can be used to position the magnetic portion in position (such as rotationally), for example, by receiving a tab of the second magnetic portion.

[0064] As described above, in some embodiments, the retention of the first magnetic portion can be used to magnetically couple the fan module to the filter portion. For example, this can be used to magnetically couple the fan module to the filter portion, where the fan module includes a second magnetic portion of the magnetic coupling member, and the first magnetic portion and the second magnetic portion are magnetically attracted to each other.

[0065] In some embodiments, the face mask can further include a first magnetic portion that can be attached to the inner or outer side through the retainer.

[0066] In some embodiments, the face mask includes a fixing structure configured to rotationally position the first magnetic portion.

[0067] In some embodiments, the fixing structure is the second opening, and the first magnetic part is configured with a tab corresponding to the position of the second opening.

[0068] In some embodiments, at least the first magnetic part defines an annular shape defining a central opening region having a first part and a second part, wherein when the first magnetic part is received in the holder, the holder covers the first part of the central opening region, and the second part of the first magnetic part is exposed on the inner or outer surface of the filtering part, whereby the flow resistance of the first part is higher than that of the second part.

[0069] Features or options described with respect to one aspect or embodiment of the present invention may be combined or incorporated into any other aspect of the embodiments of the present invention.

[0070] With reference to the embodiments described below, these and other aspects of the present invention will become apparent and be elucidated. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] To better understand the present invention and to more clearly show how the present invention may be implemented, reference will now be made, by way of example only, to the accompanying drawings, in which:

[0072] Figures 1 to 3 A view of a prior art face mask having a fixed coupling between a filter member and a fan module is shown;

[0073] Figure 4 An illustration of parts of a magnetic coupling according to one or more embodiments of the present invention is shown;

[0074] Figure 5 A view of the inner side of an exemplary face mask according to one or more embodiments of the present invention is shown, in which the holder is shown in the form of a bag for receiving a part of the magnetic coupling;

[0075] Figure 6 A view of the inner side of another exemplary face mask according to one or more embodiments of the present invention is shown, in which the holder is shown in the form of a bag for receiving a part of the magnetic coupling;

[0076] Figure 7 A view of the filtering part of a face mask according to one or more embodiments of the present invention is shown, the face mask having a holder in the form of a bag for receiving a part of the magnetic coupling;

[0077] Figure 8 A view of the filtering part of a face mask according to one or more other embodiments of the present invention is shown, the face mask having a holder in the form of a bag for receiving a part of the magnetic coupling;

[0078] Figure 9 Shows an exploded view of the outer side of the face mask, schematically showing how the fan module is aligned with the first magnetic coupling part;

[0079] Figure 10 Shows a view of a face mask according to another embodiment or embodiments of the present invention, the face mask having a retainer in the form of a band for receiving a part of the magnetic coupling member;

[0080] Figure 11 Shows a view of a face mask according to another embodiment or embodiments of the present invention, the face mask having a retainer in the form of a band;

[0081] Figure 12 Shows Figure 11 a view of the filter part of the face mask, the face mask including a retainer; and

[0082] Figure 13 Shows a view of the filter part of a face mask according to another embodiment or embodiments of the present invention. Detailed Description

[0083] The present invention will be described below with reference to the accompanying drawings.

[0084] It should be understood that the detailed description and specific examples, although indicating exemplary embodiments of the apparatus, systems and methods, are intended for illustrative purposes only and are not intended to limit the scope of the present invention. These and other features, aspects and advantages of the apparatus, systems and methods of the present invention can be better understood in conjunction with the following description, the appended claims and the drawings. It should be understood that the drawings are merely schematic and not drawn to scale. It should also be understood that the same reference numerals represent the same or similar components throughout the drawings.

[0085] The present invention provides a face mask system and a face mask. The face mask system includes a magnetic coupling device for coupling a power fan to a filter part of the face mask, wherein the face mask further includes a retaining device for holding a separable magnetic part (hereinafter referred to as "the first magnetic part") of the coupling device in a stable position relative to the filter, thereby positioning the coupling device relative to the filter. The retaining device is provided, for example, by a bag or a band. The bag may further include a fixing device for positioning and fixing the separable magnetic part within the bag, for example, by complementary shape features of the bag and the separable magnetic part, such as by providing an interlocking action or an interlocking geometry feature between respective parts or the whole of the bag and the separable magnetic part.

[0086] According to at least one set of embodiments, a provided face mask system can include: a face mask and a fan module, the face mask having a face mask filter, and the fan module including a fan component for driving air. The fan module can be attached to the filter by a magnetic coupling that includes pairs of mutually magnetically attracting elements, such as pairs of magnets or one magnet and one magnetically receptive portion, the magnetically receptive portion including a magnetic material attracted to the magnet. According to other embodiments, the face mask can be provided alone or can be provided in combination with at least one of the magnetic portions of the magnetic coupling, but without the fan module. An overlying portion can optionally extend over the filtering portion and can optionally define a hole or opening that the fan module can be aligned with to allow the fan module to be coupled to the filtering portion.

[0087] There is a retainer (such as a retaining structure) on the filter to accommodate / receive one of the magnetically attracting portions. The retainer can, for example, include a flap that is attached to the surface of the filtering portion. The retainer can, for example, be in the form of a bag or a strap. In a preferred embodiment, the shape of the retaining structure can be designed to be complementary to the shape of the magnetic portion it houses to guide the magnetic portion to be placed in the retaining structure in a defined position and orientation, thus ensuring a foolproof design. The retainer can be located on either side of the filter. In the case where the retainer is a bag, the bag can have any shape. Optionally, the retainer includes means for positioning and fixing or positioning the first magnetic portion within the retainer. For example, the retainer can include a fixing structure that is configured to position the first magnetic portion in position, such as rotationally position the first magnetic portion. For example, optionally, there are holes in the bag and a designated convex tab exists on the magnetic component, and the convex tab can fit into the holes in the bag. By doing so, it is ensured that the user can easily align the magnetic pair in the correct orientation.

[0088] Optionally, the retainer is only attached to the inner layer of the filter.

[0089] To provide the background of the embodiments of the present invention and also to clarify the features that will be described later, Figures 1 to 3 An example of a prior art face mask design is shown, where the embodiments of the present invention represent a creative development. The face mask 10 is shown in an exploded view and includes a housing 12 and an inner filter member 14. The housing is rigid or semi-rigid and has ear straps 13, while the filter member 14 is formed of a fabric and is thus easily deformable so that the outer edge can match the shape of the wearer's face.

[0090] The housing 12 is porous so that air can flow through the housing.

[0091] The inner filter member 14 is sealed around the connection area 16. The connection area 16 provides an area for fluid and mechanical connection to the fan module 20. In this particular example, the connection area 16 includes a passive check valve. The connection area and the fan module can be manually connected together and disconnected.

[0092] A control unit 22 is also provided, which includes, for example, a battery and a control circuit for controlling the fan module. This can include sensors. The sensors can be mechanically attached to the fan module. For example, in the illustrated example, the control module 18 is coupled to the outer side of the filter member 14, and the control module includes both the fan module 20 and the control unit 22. Note that alternatively, the control circuit can be integrally included in the fan module. Thus, various additional circuit elements and the battery can be divided in different ways between the fan module and the dedicated control unit.

[0093] In the illustrated example, the connection area includes a physical connector module 16 that is permanently fixed to the filter member 14 such that when the filter is replaced, the physical connector module 16 is discarded with the filter member 14. The fan module 20 is reusable and includes (at least) a fan drive circuit and a fan impeller.

[0094] The housing 12 has an opening 24 in which the fan module 20 is received. The inner surface of the housing can also have a receiving seat area for the control unit 22, or the outer surface of the filter member can have a receiving seat area 26 for positioning the control unit 22.

[0095] The electrical connector bridge 28 provides an electrical connection between the control unit 22 and the fan module 20 of the fan assembly to transmit power and control signals.

[0096] The fan module 20 and the control unit 22 are located at opposite lateral sides of the face mask, i.e., on either side of the wearer's nose. This provides a balanced weight distribution. By providing two modules, the weight of each individual component is reduced, such that the load at any position is reduced.

[0097] In this example, the fan is an exhaust fan. In the simplest design, the fan operates continuously to provide a continuous air supply to the face (using the air drawn through the face mask filter). This provides temperature and humidity control. However, the fan can also operate in synchronization with the wearer's breathing (with appropriate breath sensing) and can be bidirectionally controlled.

[0098] Figure 2 The design of the Figure 1 is shown in an assembled state from one front side, and Figure 3 the design of the Figure 1 is shown in an assembled state from the opposite front side.

[0099] Figures 4 to 6 Schematically shows an example face mask and face mask system in accordance with one or more embodiments of the present invention.

[0100] Figure 4 Shows a plurality of portions of a magnetic coupler for use with the provided face mask or face mask system.

[0101] Figure 5 Shows a view of the inside of the provided face mask, the face mask including a retainer in the form of a pouch for retaining Figure 4 one of the portions of the magnetic coupler.

[0102] Figure 6 Shows Figure 5 a view of the inside of a variant of the face mask, the face mask including a positioning tab located on the magnetic portion for being received in the pouch.

[0103] See Figure 5 , the face mask 10 includes a filter portion 14, the filter portion 14 including filter material for filtering air passing between the inside of the face mask (facing the user's face during use) and the outside of the face mask (away from the user during use). Figure 5 And Figure 6 Both show views of the inside of the face mask. The filter portion 14 may be formed by a filter layer or a filter member. The filter portion may be covered on the outside of the face mask by a covering portion. The covering portion may be porous to allow air to pass therethrough.

[0104] A face mask system may be provided, the face mask system including the face mask 10 and further including a fan module 20 (as Figure 4 shown, but omitted in Figure 5 and Figure 6 ). The fan module is configured such that, when the face mask system is in an assembled state, the fan module is arranged in fluid series with the filter portion 14 in use to drive air through the filter portion. The fan module includes a fan component for driving air and electronics for driving the fan. The fan component may be a suction fan or an exhaust fan, or both. The fan module 20 may be disposed on the outside of the face mask coupled to the area of the filter portion of the face mask (e.g., the area of the filter portion exposed by the opening of the optional covering portion) during operation to allow air to be driven from the outside of the face mask to the inside, or from the inside to the outside, or both.

[0105] The provided face mask 10 or face mask system further includes a magnetic coupling member for releasably coupling the fan module 20 to the filter portion 14 at a position where the fan module is in fluid series with the filter portion. The magnetic coupling member includes a second magnetic portion 44 and a first magnetic portion 42 that are magnetically attracted to each other. The second magnetic portion 44 is included by the fan module 20, and the first magnetic portion 42 is separated from the fan module. The second magnetic portion is not directly visible in Figures 4 to 6 but is integrated into the housing of the fan module 20, for example, at or near the face of the fan module 20 that faces the user's face inwardly when the face mask is in the assembled state, as Figure 4 shown.

[0106] The face mask further includes a retainer 46 for receiving the first magnetic portion 42 of the magnetic coupling member and positioning it relative to the filter portion 14. In the illustrated embodiment, the retainer is in the form of a pouch 46. However, in other embodiments, the retainer may take other different forms, such as flaps or straps or other structures for receiving and positioning the first magnetic portion. In the illustrated embodiment, the pouch is provided on the filter portion, particularly by flaps attached to the inner side of the filter portion, and the inner side of the filter portion faces the user's face during use.

[0107] Generally, the retainer 46 can be at least partially formed by a material flap attached to the filter portion 14, and the material flap forms, for example, a pouch or a strap. Generally, the retainer can be attached to the filter portion by at least an upper joining edge and a lower joining edge, and the material flap extends between the upper joining edge and the lower joining edge. The upper joining edge and the lower joining edge can be connected by at least one side edge as Figure 5 shown to form a pouch, or the sides can be open to form a strap or a loop.

[0108] The retainer 46 provides the function of positioning the first magnetic portion 42 relative to the filter portion 14 such that, with the first magnetic portion received in the retainer 46, the magnetic attraction between the second magnetic portion 44 and the first magnetic portion 42 allows the fan module 20 to be magnetically coupled to the face mask, for example, magnetically coupled to the filter portion 14. In particular, it is contemplated that the fan module will be coupled to the outer side of the face mask, for example, coupled to the outer side of the filter portion.

[0109] As Figure 5 and Figure 6 shown, the retainer 46 can be positioned on the inner side of the filter portion 14, while the fan module 20 is coupled to the outer side of the filter portion in the assembled state of the face mask. However, in other embodiments, the retainer can also be provided on the same side (outer side) of the filter portion.

[0110] The retainer 46 can generally have an access opening configured to receive the first magnetic portion within the retainer.

[0111] When the face mask is oriented for normal use, the retainer 46 can generally be used to hold or support the first magnetic portion against gravity when the first magnetic portion 42 is received within the retainer.

[0112] As previously described, optionally, a covering portion 15 is provided to cover the outer side ( Figure 5 and Figure 6 the opposite side of the (inner) side shown) of the filtering portion. The covering portion can define an opening (not shown) that exposes an area of the underlying filtering portion. The size and shape of the opening can be designed to be complementary to the size and shape of the fan module 20 and positioned to be aligned with the retainer 46 such that the fan module 20 can be aligned with the opening to allow at least the air input / output area of the fan module 20 to be coupled with the area of the filtering portion underlying the covering portion exposed through the opening in the covering portion.

[0113] As Figure 4 and Figure 6 shown, the first magnetic portion 42 preferably has an annular shape, i.e., a toroidal shape, wherein the (one or more) magnetic elements are incorporated in the outer annular rim 62. The first magnetic portion 42 can be in a flat and / or disc-like form. The annular rim defines a large central opening area 64. As Figure 4 shown, this configuration allows the first magnetic portion to be coupled to the surface of the fan module 20 in such a way that the air input / output area of the fan module is aligned with the central opening area 64 in the middle of the first magnetic portion. Thus, the first magnetic portion can be coupled to the fan module without obstructing the airflow from the fan through into the face mask or from the face mask out through the fan. As an example, the second magnetic portion 44 of the magnetic coupling can have a toroidal shape complementary to the first magnetic portion 42, e.g., extending around the outer periphery of the face of the fan module 44 that faces the user's face in the assembled position.

[0114] The second and first magnetic portions can each include one or more magnets, wherein the (one or more) magnets of the second portion are magnetically attracted to the magnets of the first portion. Alternatively, one of the second and first magnetic portions can include one or more magnets and the other can include a magnetic material capable of attracting the (one or more) magnets of the other portion. Regarding the magnets, multiple magnetic elements can be included in one or both of the magnetic portions of the coupling or only in one magnetic portion. In some examples, one or more magnetic strips can be used.

[0115] As Figure 5 and Figure 6As shown, the retainer 46 defines an access opening 52 located on one side, and the access opening 52 allows the insertion and removal of the first magnetic part 42. For example, the retainer can be in the form of a bag having an access opening 52 located on one side. Optionally, the retainer further includes a fixing device for reversibly fixing the access opening in a closed state to prevent the magnetic part from detaching when so closed. Any suitable fixing device can also be used, such as a releasable snap fastener, a tongue and groove seal, a hook and loop fastener, etc.

[0116] In a set of preferred embodiments, the retainer 46 further includes a fixing or positioning device for fixing or positioning the first magnetic part 42 within the bag. In particular, it is preferred to provide a device for holding the first magnetic part in a fixed or stable position within the retainer 46, or at least for at least partially resisting the movement of the first magnetic part within the retainer 46. The device can provide a way to rotationally fix or position the first magnetic part within the retainer. For example, the retainer can include a fixing structure configured to position the first magnetic part in position (e.g., rotationally position the first magnetic part).

[0117] As an example, and as Figure 6 and Figure 7 shown, the retainer 46 can be provided with a shape and / or dimensions complementary to the external shape and / or dimensions of the first magnetic part, such that the boundaries of the retainer serve to hold the first magnetic part in a fixed / stable position when the first magnetic part is received within the bag, thereby positioning the first magnetic part relative to the filtering part. For example, as Figure 5 and Figure 6 shown, the first magnetic part has a circular shape, such as an oval shape. The retainer 46 is in the form of a bag, and the bag has a matching circular shape, such as a matching oval shape. This provides a snug fit or flush fit of the first magnetic part within the bag 46. In other words, it can be said that the complementary external / internal shapes provided by the first magnetic part 42 and the bag respectively provide an interlocking geometry.

[0118] Additionally or alternatively, and as Figure 4 and Figure 6As shown, in a set of preferred embodiments, the first magnetic portion 42 includes a protruding member, such as a tab 66, protruding from an edge. In the example shown, the tab extends coplanarly with the plane defined by the first magnetic portion 42 (specifically, the plane defined by the annular shape of the first magnetic portion). This helps to fix the first magnetic portion in the holder 46 in a specific spatial arrangement. For example, in the example shown, the holder 46 is in the form of a bag and includes a tab receiving opening 56 in one side. The tab receiving opening 56 is arranged such that when the first magnetic portion is received in the bag, it allows the protruding portion of the tab to pass through the tab receiving opening and has a shape and size complementary to the tab, so that when the tab is received through the opening, the first magnetic portion is rotationally positioned / fixed within the bag. Thus, the opening 56 together with the tab 66 provides the function of rotationally aligning the first magnetic portion 42 within the bag 46. For example, the size and shape of the tab receiving opening can be designed such that when the tab 66 protrudes through the opening, it at least partially restricts the lateral (e.g., rotational) movement of the tab 66, thereby rotationally positioning the first magnetic portion within the bag. In other words, it can be said that the complementary shapes of the tab and the tab receiving opening provide an interlocking geometry.

[0119] Thus, in this example, the holder 46 includes a fixing structure configured to rotationally position the first magnetic portion 42, and wherein the fixing structure is the tab receiving opening 56 in the holder 46, and wherein the first magnetic portion is configured with a tab 66 that corresponds to the position of the opening 56 in the holder. In addition, the tab receiving opening is the second opening of the holder 46, provided in addition to the first (entry) opening 52 that allows the first magnetic portion 42 to be received in the holder.

[0120] As a more general principle, it is advantageous to provide means for positioning and fixing the first magnetic portion within the holder 46.

[0121] Furthermore, it can be recognized from the above example that, as a general principle, such means can be provided by complementary shape features of the first magnetic portion and the holder 46 itself, complementary external / internal shapes of the magnetic portion / holder, or by complementary morphologies of mating parts such as tabs and openings. The means can include ways to provide an interlocking geometry or interlocking action between at least a portion of the first magnetic portion and at least a portion of the holder.

[0122] Figure 7 and Figure 8 An additional view of the inner side of the filter portion 14 with the holder 46 is shown. In these examples, the holder also takes the form of a bag 46. The first magnetic portion 42 of the magnetic coupling is received in the bag. Figure 7 and Figure 8Perspective views of corresponding embodiments of the present invention are shown, showing the inner side of the filter (in the assembled state of the mask, the inner side faces the user). Figure 7 and Figure 8 Different possible exemplary configurations for the bag are shown respectively.

[0123] Figure 7 An example is shown in which the bag 46 has an opening for receiving the first magnetic part 42 at one lateral side of the bag, and the first magnetic part 42 extends from the top to the bottom of the bag. In this example, the bag is arranged to substantially receive the entire first magnetic part. In other words, when the first magnetic part is received in the bag, the bag substantially covers the entire area of the first magnetic part.

[0124] Figure 8 An example is shown in which the bag 46 has an opening for receiving the first magnetic part 42 across the top of the bag. The opening extends from one lateral side to the other lateral side. In this example, the bag is arranged to receive only a part of the first magnetic part. In other words, when the first magnetic part is received in the bag, the bag only covers a part of the area of the first magnetic part. In particular, in this example, the bag covers approximately half of the area of the first magnetic part.

[0125] In fact, in other examples, a retainer including flaps can be provided, which covers an even smaller area of the first magnetic part, as long as the retainer still receives the first magnetic part and holds it in place. In other words, the retainer can provide a housing configured to receive the first magnetic part and fix the first magnetic part in place. For example, the retainer can be in the form of a band with openings on both sides and is arranged to receive the first magnetic part and hold it in place.

[0126] Generally, the configuration can meet the following conditions. The first magnetic part 42 can define an annular shape bounding a central opening region, and the central opening region has a first part and a second part. When the first magnetic part is received in the retainer 46, the retainer covers the first part of the central opening region, and the second part of the first magnetic part is exposed on the inner or outer surface of the filter part 14, whereby the flow resistance of the first part is higher than that of the second part.

[0127] Figure 9 An exploded view of the outer side of the mask is shown, schematically showing how the fan module 20 is aligned with the first magnetic coupling part. Figure 9 The positioning of the first magnetic part 42 received in the retainer 46 is schematically shown. In this example, the retainer takes the form of a belt structure 46.

[0128] Although Figure 9It shows that the first magnetic part is fixed on the outer side of the filtering part 14, but more preferably, the first magnetic part can be fixed on the inner side of the filtering part, facing the user during use. The fan module 20 includes a second magnetic part 44 coupled to the first magnetic part 42. These two magnetic parts have substantially matching annular shapes. In addition, the fan module has an outer shape that substantially matches the outer shape of the first magnetic part. Figure 9 The fan component 21 of the fan module for driving air is shown in Figure 9 .

[0129] Optionally, the face mask may include an outer cover part 15 that is laminated on top of the filtering part 14 for protection. For example, the outer cover part can be rigid or semi-rigid and has ear straps 13, while the filtering member 14 can be formed of fabric and is thus easily deformable so that the outer edge can match the shape of the wearer's face. However, more preferably, the face mask includes a filtering part without such an outer cover to minimize the resistance to the user's breathing. The ear straps can be attached to the filtering part, thus allowing the face mask to be worn in the normal manner. The filtering part includes filtering material. Different grades of filtration are possible.

[0130] In the case where the outer cover part 15 is provided, the fan module can be directly coupled to the outer cover part by magnetic attraction to the first magnetic part 42 arranged in the holder of the filtering part, where the holder is preferably located on the inner side of the filter, but can also be located on the outer side of the filter. Alternatively, the outer cover part can define an opening having dimensions and a shape complementary to at least the air input / output area of the fan module 20 and is positioned to be aligned with the holder 46 on the filtering part (e.g., on the opposite side of the filtering part), so that when the fan module is magnetically coupled to the first magnetic part 42 housed in the holder, the fan module 20 is aligned with the opening in the outer cover part, thereby allowing the fan to be coupled to the area exposed through the opening of the covering part of the filtering part.

[0131] Figure 4 and Figure 9 The shown fan module is preferably an independent module unit, including a fan component 21 (fan impeller) for driving air, a battery, and control electronics for driving the fan. The control circuit can also include sensors.

[0132] The fan module can be an inward fan. In the simplest design, the fan operates continuously to provide a continuous air supply to the face (using the air sucked through the face mask filter). This provides temperature and humidity control. However, alternatively, the fan can also operate in synchronization with the wearer's breathing (with appropriate breath sensing) and can be controlled bidirectionally.

[0133] For example, when inhaling, air is drawn in through the filter portion 14. During this time, the fan may operate to provide an air flow, or may be turned off to conserve energy. When exhaling, the fan may operate to generate an outward air flow, and there may also be an air flow outward through the internal filter portion. In particular, since the fan removes the exhaled air in the mask cavity, thereby preventing the previously exhaled stale air from being breathed again (recirculated), the breathing comfort is improved.

[0134] Figure 10 Another example mask according to one or more embodiments is shown. The mask includes a filter portion 14 and a retainer 46. The retainer 46 is configured to hold a first magnetic portion 42 of a magnetic coupling for coupling a fan module including a second magnetic portion to the filter portion 14. As shown, in this example, the retainer 46 takes the form of a bag or strip formed by a material flap. The retainer is attached to the filter portion 14 by upper and lower engagement edges. The retainer 46 includes an access opening located on one side to allow insertion and removal of the first magnetic portion 42. As shown, like the Figure 6 embodiment, this example also includes a second opening 56, and wherein the first magnetic portion is configured with a tab 66 corresponding to the position of the second opening.

[0135] Figure 11 Another example mask according to one or more embodiments is shown. The mask includes a filter portion 14 and a retainer 46. The retainer 46 is configured to hold a first magnetic portion 42 of a magnetic coupling for coupling a fan module including a second magnetic portion to the filter portion 14. As shown, in this example, the retainer 46 takes the form of a strip formed by a material flap and is attached to the filter portion 14 by an upper engagement edge and a lower engagement edge. In this example, the lower engagement edge may be longer than the upper engagement edge.

[0136] Figure 12 A view of the filter portion 14 of an example mask according to one or more embodiments is shown. The configuration of the retainer 46 in this example is the same as that of the Figure 11 example mask shown. The view also shows that the filter portion includes an upper panel 82 and a lower panel 84. The two panels can be folded to cover or expose the retainer 46 (and the first magnetic portion 42 received in the retainer). More particularly, the upper panel 82 includes a flap that can be folded along a lower edge 92, and the lower panel 84 includes a flap that can be folded along an upper edge 94. Figure 12A view is shown in which the upper panel and the lower panel are folded up to expose the retainer 46 (and the first magnetic portion 42). This allows the first magnetic portion 42 to be inserted into and removed from the retainer. The upper panel and the lower panel can be folded downward toward the retainer to at least partially cover the retainer. For example, the filtering portion can be folded on the upper side to form the upper panel, and / or the filtering portion can be folded on the lower side to form the lower panel, and wherein the lower panel and / or the upper panel are folded toward the second opening 56 of the retainer 46 to hold the first magnetic portion. This further helps to hold the first magnetic portion 42 in the retainer when wearing the face mask.

[0137] In addition, it can be seen that the lower edge of the upper panel is connected to the filtering portion, and the upper edge of the lower panel is connected to the filtering portion.

[0138] The retainer is positioned relative to the upper edge of the lower panel and / or the lower edge of the upper panel to fix the magnetic portion to the retainer when using the face mask.

[0139] In addition, Figure 12 A view is shown in which the filtering portion can include a bending line 86 that is in a generally vertical direction of the face side portion of the filtering portion when the face mask is worn and used by a user.

[0140] The retainer 46 is positioned relative to the bending line 86 such that the bending line is used to block / interrupt the lateral movement of the first magnetic portion 42 out of the retainer, thereby helping to hold / fix the first magnetic portion in the retainer to prevent the magnetic portion from detaching when using the face mask.

[0141] In particular, the retainer 46 is positioned such that the bending line 86 can engage with the first (entry) opening 52 of the retainer 46 to fix / hold the first magnetic portion in the retainer 46 and prevent the first magnetic portion from detaching when using the face mask.

[0142] Figure 13 A view is shown of another example filtering portion 14 of an example face mask according to one or more embodiments. This example is the same as Figure 12 except for the shape of the retainer 46. In this example, the retainer 46 includes a bag that has an entry opening 52 located on one side for receiving the first magnetic portion 42; and includes a second opening 56 located on the second side for receiving a tab 66 that is included in the first magnetic portion and is used to position the first magnetic portion 42 in place. In this example, compared to Figure 12 the example where the retainer is in the form of a band and covers a smaller area defined by the first magnetic portion 42, the retainer covers approximately half of the area defined by the first magnetic portion.

[0143] In carrying out the claimed invention, those skilled in the art can understand and implement variations of the disclosed embodiments by studying the drawings, the disclosure and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality.

[0144] A single processor or other unit may implement multiple functions recited in the claims.

[0145] The fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to achieve an advantage.

[0146] A computer program may be stored / distributed on a suitable medium, such as an optical storage medium or a solid-state medium provided together with the hardware or as part of other hardware, but may also be distributed in other forms, such as via the Internet or other wired or wireless telecommunication systems.

[0147] If the term "adapted to" is used in the claims or the specification, it should be noted that the term "adapted to" is intended to be equivalent to the term "configured to".

[0148] Any reference signs in the claims should not be construed as limiting their scope.

Claims

1. A face mask system, comprising: Face mask, the face mask comprising a filtration portion, the filtration portion comprising filtration material for filtering air passing between the inner side and the outer side of the face mask, the inner side of the face mask facing the user's face during use; Fan module, when the face mask system is in an assembled state, the fan module is fluidly arranged in series with the filtration portion in use for driving air through the filtration portion; Magnetic coupling member, the magnetic coupling member for releasably coupling the fan module to the filtration portion at a position where the fan module is fluidly arranged in series with the filtration portion, wherein the magnetic coupling member comprises a first magnetic portion and a second magnetic portion, the first magnetic portion and the second magnetic portion being magnetically attracted to each other; wherein the second magnetic portion is included by the fan module; wherein the first magnetic portion is separated from the fan module; wherein the face mask further comprises a retainer for removably receiving the first magnetic portion and positioning the first magnetic portion relative to the filtration portion; whereby, with the first magnetic portion received in the retainer, the magnetic attraction between the first magnetic portion and the second magnetic portion allows magnetic coupling of the fan module to the filtration portion.

2. The face mask system according to claim 1, wherein, The retainer comprises a bag or a strap.

3. The face mask system according to claim 1 or 2, wherein, The retainer is included by the filtration portion.

4. The face mask system according to any one of claims 1 to 3, wherein, The retainer is formed by a flap attached to the surface of the filtration portion.

5. The face mask system according to any one of claims 1 to 4, wherein, The retainer is provided on the inner side of the filtration portion, and the fan module is for attachment at a position on the outer side of the filtration portion corresponding to the position of the retainer on the inner side of the filtration portion.

6. The face mask system according to any one of claims 1 to 5, wherein, The retainer is a bag, and the bag defines an access opening at one side, the access opening allowing insertion and removal of the first magnetic portion.

7. The face mask system according to any one of claims 1 to 6, wherein, The retainer comprises means for positioning and fixing the first magnetic portion within the retainer.

8. The face mask system according to claim 7, wherein, The means for positioning and fixing the first magnetic portion within the retainer is provided by complementary shape features of the first magnetic portion and the retainer.

9. The face mask system according to any one of claims 1 to 8, wherein, The retainer is a bag, and the bag has a shape and / or dimensions complementary to the outer shape and / or dimensions of the first magnetic portion such that the boundaries of the bag serve to hold the first magnetic portion in a fixed / stable position when the first magnetic portion is received in the bag, thereby positioning the first magnetic portion relative to the filtration portion.

10. The face mask system according to any one of claims 1 to 9, wherein, The retainer is a bag, and wherein the first magnetic portion comprises a tab protruding from one edge, the tab for rotationally fixing the first magnetic portion to the bag, and preferably, wherein the tab extends coplanarly with the plane defined by the first magnetic portion.

11. The face mask system according to claim 10, wherein, The bag includes a tab receiving opening in one side, which is arranged to allow the protrusion of the tab to pass through the tab receiving opening when the first magnetic part is received in the bag, and has a shape and size complementary to the tab, so that when the tab is received through the tab receiving opening, the first magnetic part is rotationally positioned within the bag.

12. The face mask system according to any one of claims 1 to 11, wherein, At least the first magnetic part defines an annular shape, which defines a central opening area having a first part and a second part, wherein the retainer covers the first part of the central opening area, whereby the flow resistance of the second part of the central opening area is lower than that of the first part of the central opening area.

13. The face mask system according to claim 12, wherein, The first magnetic part and the second magnetic part are configured such that when magnetically coupled to each other, the air input / output area of the fan module is aligned with the central opening area defined by the first magnetic part.

14. A face mask for use in a face mask system, the face mask system including the face mask and a fan module that can be releasably coupled to the face mask, the face mask comprising: A filter part, the filter part including filter material to filter air passing between the inner side and the outer side of the face mask, the inner side of the face mask facing the user's face during use; A retainer configured on the inner or outer side of the filter part for holding a magnetic part of a magnetic coupling member on the inner or outer side of the filter part for magnetically coupling a fan module to the filter part.

15. The face mask according to claim 14, wherein, The retainer is formed by a material flap attached to the filter part, and the material flap forms a bag or a band.

16. The face mask according to claim 14 or 15, wherein, The retainer is for holding a magnetic part having the form of a ring that defines a central opening area.

17. The face mask according to any one of claims 14 to 16, wherein, The retainer is provided on the inner side of the filter part, and the filter part has an attachment area located on the outer side of the filter part at a position corresponding to the position of the retainer on the inner side of the filter part.

18. The face mask according to any one of claims 14 to 17, wherein, The retainer is attached to the filter part by at least an upper joining edge and a lower joining edge, wherein the material flap extends between the upper joining edge and the lower joining edge.

19. The face mask according to any one of claims 14 to 18, further comprising an upper panel and a lower panel, wherein the upper panel and the lower panel are disposed on the same side of the filter portion to which the retainer is attached, wherein, The upper panel includes a flap that can be folded along the lower edge, and the lower panel includes a flap that can be folded along the upper edge; And wherein, the upper panel and the lower panel can be folded to cover or not cover the retainer, so as to cover or not cover the magnetic part when the magnetic part is received in the retainer.

20. The face mask according to any one of claims 14 to 19, further comprising an upper panel and / or a lower panel, wherein a lower edge of the upper panel is connected to the filter portion, and wherein an upper edge of the lower panel is connected to the filter portion, wherein, The retainer is positioned relative to the upper edge of the lower panel and / or the lower edge of the upper panel to fix the magnetic part and the retainer together when using the face mask.

21. The face mask according to any one of claims 14 to 20, wherein, The face mask has a bending line, which is in a generally vertical direction when using the face mask, and The retainer is positioned relative to the bending line such that the bending line is used to block or interrupt the lateral movement of the magnetic part out of the retainer when using the face mask, thereby preventing the magnetic part from detaching.

22. The face mask according to any one of claims 14 to 21, further comprising the magnetic portion of the magnetic coupling member held by the retainer.

23. The face mask according to any one of claims 14 to 22, wherein, The retainer is a bag, and the bag defines an access opening located at one side, the access opening allowing insertion and removal of the magnetic part.

24. The face mask according to any one of claims 14 to 23, wherein, The retainer is a bag, and the bag has a shape and / or dimensions complementary to the external shape and / or dimensions of the magnetic part, such that when the magnetic part is received in the bag, the boundaries of the bag serve to hold the magnetic part in a fixed / stable position, thereby positioning the magnetic part relative to the filter part.

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