Charger with multi-component cover and aerosol generating system

Abstract

The present invention relates to a charger for charging an aerosol generating device. The charger includes a housing defining a cavity for receiving an aerosol generating device to be charged. The cavity has an opening. At least one electrical contact is located within the cavity. The charger includes a cover including a plurality of movable elements actuable between an open position and a closed position, each of the movable elements having an inner surface facing the cavity when in the closed position. A portion of the inner surface of at least one of the movable elements of the cover defines a profiled engagement member having a leading edge and a trailing edge. In the closed position, the movable element ensures that electrical communication is maintained between the charger and an aerosol generating device received within the charger. The present invention also relates to an aerosol generating system including the charger and the aerosol generating device, and a method of using the aerosol generating system.

Description

[Technical field]

[0001] The present disclosure relates to a charger for receiving an aerosol generating article having an improved closure, an aerosol generating system including the charger, and a method of using the aerosol generating system. [Background technology]

[0002] An electrically operated aerosol generating system generally comprises an aerosol-forming substrate and an atomizer, the atomizer being operable to atomize a volatile compound in the aerosol-forming substrate to form an aerosol for inhalation by a user. Typically, an electrically operated aerosol generating system also comprises an aerosol generating device, including a power supply for providing power to the atomizer. The atomizer may be an electrically operated heating means, for example an electric heater.

[0003] In some systems, the aerosol-generating device is configured to receive an aerosol-generating article, including a solid aerosol-forming substrate, such as a substrate that includes homogenized tobacco. In these systems, the device typically includes an atomizer arranged to heat the aerosol-forming substrate when the article is received within the device, and a power source connected to the atomizer in the form of a rechargeable battery.

[0004] Some electrically operated aerosol generating systems include a separate charger for releasably receiving and recharging the aerosol generating device when not in use. Typically, the aerosol generating device is used frequently. For example, the aerosol generating device may be used multiple times a day. Thus, a user will insert and remove the aerosol generating device from the charger frequently throughout the day.

[0005] In some aerosol generating systems, the charger further comprises a cover, which may be movable from an open position in which the aerosol generating device may be received by the charger, and a closed position in which the aerosol generating device is protected from dust.

[0006] The charger typically comprises electrical contacts. The aerosol generating device also typically comprises electrical contacts. In order to recharge an aerosol generating device received in the charger, the aerosol generating device needs to be positioned in the charger such that the electrical contacts of the aerosol generating device are electrically connected with the electrical contacts of the charger when the aerosol generating device is received in the charger. In the closed position, the cover also prevents the user from changing the position of the aerosol generating device in the charger. However, if the charger is stored in a particular orientation or is dropped by the user of the device, the electrical connection may not be consistently maintained. If the electrical connection is not consistently maintained while the aerosol generating device is received in the charger, the aerosol generating device may not be properly recharged. This risk is particularly high when the aerosol generating system is a portable system. Furthermore, there is a risk that the cover may be unintentionally forced from the closed position to the open position.

[0007] Furthermore, in many aerosol generating systems, the cover in the open position generally runs the risk of being damaged. This is especially true if, in the open position, the cover protrudes from the charger. For example, the cover may be movable about an axis of rotation, and in the closed position, the cover is substantially parallel to and adjacent to the surface of the charger. When rotated about the axis of rotation, in the open position, the cover is substantially perpendicular to the surface of the charger. If the charger protrudes at a right angle in such a manner, there is a risk of the cover being damaged.

[0008] It is desirable to provide a charger that allows for reliable and efficient charging by ensuring an electrical connection between the charger and an aerosol generating device received within the charger. Given the frequency of use of aerosol generating systems, it is desirable to provide a charger that can be quickly and simply operated by a user of the device. It is also desirable to provide a charger with a sturdy cover. Summary of the Invention

[0009] In the present disclosure, a charger for charging an aerosol generating device is provided. The charger may include a housing defining a cavity for receiving an aerosol generating device to be charged. The cavity may have an opening. At least one electrical contact may be located within the cavity. The charger may include a cover. The cover may include a plurality of movable elements. The movable elements may be actuatable between an open position and a closed position. Each of the movable elements may have an inner surface that faces the cavity when in the closed position. At least a portion of the inner surface of at least one of the movable elements of the cover may define a profiled engagement member. The profiled engagement member may have a leading edge and a trailing edge. The profiled engagement member may be sloped into or toward the cavity when the respective movable element is in the closed position. The slope may increase in a direction from the leading edge to the trailing edge of the profiled engagement member.

[0010] In one example, a charger for charging an aerosol generating device may include a housing defining a cavity for receiving an aerosol generating device to be charged, the cavity having an opening, at least one electrical contact positioned within the cavity, and a cover including a plurality of movable elements operable between an open position and a closed position, each of the movable elements having an inner surface facing the cavity when in the closed position, at least a portion of the inner surface of at least one of the movable elements of the cover defining a profiled engagement member having a leading edge and a trailing edge, the profiled engagement member sloping into or toward the cavity when each movable element is in the closed position, the sloping increasing in a direction from the leading edge to the trailing edge of the profiled engagement member.

[0011] When the plurality of movable elements are in the open position, the aerosol generating device may be received by the charger within the cavity. When the plurality of movable elements are in the closed position, the aerosol generating device received by the charger is protected from dust and dirt from the surroundings of the charger. In the closed position, the plurality of movable elements also prevent a user from changing the position of the aerosol generating device within the charger. When the plurality of movable elements are in the closed position, electrical contact between at least one electrical contact of the charger and the aerosol generating device is ensured. Such a charger advantageously allows for reliable and efficient charging of the aerosol generating device received within the cavity.

[0012] A cover including multiple movable elements actuatable between open and closed positions advantageously reduces the footprint of the cover as compared to a cover including a single movable element, which allows the charger housing to be more compact, which is particularly advantageous when the charger is a portable charger.

[0013] A profiled engagement member that slopes into or toward the cavity when the plurality of movable elements are in the closed position advantageously enables engagement of an aerosol generating device received within the cavity. By engaging the aerosol generating device, the profiled engagement member advantageously holds the aerosol generating device in a predetermined position within the cavity. In the predetermined position, the aerosol generating device may be electrically connected to the charger. Engagement of the profiled engagement member with the aerosol generating device may advantageously ensure an electrical connection between the aerosol generating device and the charger regardless of the orientation of the charger or if a sudden force is applied to the charger, for example if the charger is dropped.

[0014] An electrical connection between the aerosol generating device and the charger may be established when the aerosol generating device is held in contact with at least one electrical contact located within the cavity. In particular, the electrical connection may be established when at least one electrical contact on the aerosol generating device is held in contact with at least one electrical contact located within the cavity.

[0015] As used herein, the term "profiled engagement member" refers to a portion of an inner surface of at least one of the plurality of movable elements of the cover that is configured to engage a surface of an aerosol generating device received within the charger cavity by contacting the surface of the aerosol generating device when the cover is in a closed position. The profiled engagement member may engage the aerosol generating device at some intermediate position of the cover (i.e., between the open and closed positions) and remain engaged with the aerosol generating device as the cover slides from the intermediate position to the closed position.

[0016] As used herein, the term "inner surface of the cover" means the surface of the cover that faces the charger housing. When the cover is in the closed position, this inner surface faces the cavity defined within the charger housing.

[0017] Each of the plurality of movable elements may include a profiled engagement member that slopes into or towards the cavity when the respective movable element is in the closed position, the slope preferably increasing in a direction from the leading edge to the trailing edge of the profiled engagement member. Each of the profiled engagement members may engage the aerosol generation device when the movable element is in the closed position. This advantageously results in multiple contact points between the plurality of movable elements and the aerosol generation device.

[0018] Where the multiple moveable elements include profiled engagement members, it is preferred that the inclination of each of the profiled engagement members is the same.

[0019] The cover may include an actuation plate that may be rotatable relative to the charger housing, and rotation of the actuation plate may actuate the plurality of movable elements from an open position to a closed position.

[0020] The actuation plate may be in the shape of a ring. The actuation plate may be concentric with the cavity. The cover may also include a base plate. The base plate may be in the shape of a ring.

[0021] The base plate ring may be concentric with the cavity and the actuation plate ring. The base plate ring may be positioned inside the actuation plate ring. Alternatively, the actuation plate ring may be positioned inside the base plate ring. The inner rings of the base plate and actuation plate may have diameters that correspond to the dimensions of the cavity opening. For example, the diameter of the inner ring may be equal to the diameter of the cavity opening.

[0022] Each of the multiple moveable elements may be connected to the actuation plate, which may be via an actuation arm fixed at one end to the actuation plate and fixed at the other end to the moveable element.

[0023] Each of the plurality of movable elements may also be connected to the charger housing. Alternatively, each of the plurality of movable elements may also be connected to the base plate. The connection to the base plate or the charger housing may be via a pin formed in the base plate or the charger housing.

[0024] Each of the plurality of movable elements may be connected to an actuation plate and a base plate or charger housing such that rotation of the actuation plate may actuate the movable elements from an open position to a closed position.

[0025] The connection of each of the multiple movable elements to the base plate or charger housing may be offset relative to each of the connections of the multiple movable elements to the actuation plate such that rotation of the actuation plate actuates the movable elements about a pivot.

[0026] The cover may include an iris mechanism. The iris mechanism advantageously has a small footprint and is compact and robust. The plurality of movable elements may form part of the iris mechanism. The iris mechanism may also include an actuation plate. The iris mechanism may also include a base plate.

[0027] The cover may include between 2 and 6 movable elements.

[0028] The multiple movable elements may be non-overlapping in the closed position. The multiple movable elements may be non-overlapping in the open position. This may be possible because the movable elements are connected via an actuation arm. The non-overlapping arrangement advantageously enables an iris mechanism, where at least one movable element has a profiled engagement member.

[0029] In the closed position, the movable elements may contact each other to form a continuous surface that faces the cavity opening of the charger to close the cavity. In other words, in the closed position, the movable elements may align when in the closed position, which advantageously closes the cavity against the surroundings.

[0030] The or each profiled engagement member may be configured to bias an aerosol generating device received within the cavity into engagement with the at least one electrical contact when the plurality of movable elements are in the closed position. This advantageously ensures that electrical communication between the aerosol generating device and the charger is maintained. By biasing the aerosol generating device into contact with the at least one electrical contact of the charger, electrical resistance between the at least one contact and the aerosol generating device may be significantly reduced. This may ensure efficient charging of the aerosol generating device.

[0031] As used herein, "urges" or "urging" means the application of a force by one component to another component.

[0032] The or each profiled engagement member may protrude into or towards the cavity when the plurality of movable members are in the closed position. The protrusion of the profiled engagement member may increase in a direction from a leading edge to a trailing edge of the profiled engagement member. This is a result of the slope of the profiled engagement member increasing from a leading edge to a trailing edge into or towards the cavity.

[0033] Preferably, the leading edge may not extend sufficiently into or toward the cavity to engage an aerosol generating device received within the cavity. Thus, when the plurality of movable elements are actuated from the open position to the closed position, the profiled engagement member does not immediately engage an aerosol generating device received within the cavity. Further actuation of the plurality of movable elements toward the closed position may cause the profiled engagement portion to protrude into or toward the cavity to an extent that it engages an aerosol generating device received within the cavity, and then gradually urge the aerosol generating device into engagement with the at least one electrical contact. This configuration advantageously provides a smooth engagement of the profiled engagement member with the aerosol generating device.

[0034] Where one or more of the plurality of movable elements includes a profiled engagement member, each profiled engagement member engages the aerosol generation device at the same point in the movement of the plurality of movable elements between the open and closed positions. Each profiled engagement member preferably biases the aerosol generation device evenly. This advantageously ensures that an even force is applied to the aerosol generation device, biasing it into engagement with the at least one electrical contact.

[0035] Actuation of the plurality of movable elements from the open position to the closed position may move the or each of the profiled engagement members into overlapping relationship with the cavity. In this overlapping relationship with the cavity, the or each of the profiled engagement members may advantageously interact with and engage an aerosol generating device within the cavity. The leading edge may initially move into overlapping relationship with the cavity as each of the movable elements is actuated from the open position to the closed position.

[0036] The slope of the profiled engagement member may increase linearly from the leading edge to the trailing edge into or towards the cavity. Alternatively, the slope may increase non-linearly. For example, the rate of increase in slope may increase from the leading edge to the trailing edge. The protrusion of such a cover into or towards the cavity may be initially gradual and then increase more rapidly as the cover slides out of the open position. The non-linear slope may be configured such that there is smooth engagement of the profiled engagement member while the rate of increase in slope is small, and then after engagement, the aerosol generating device is rapidly urged into the cavity to ensure the electrical connection.

[0037] Although reference has been made throughout to multiple movable elements actuatable from an open position to a closed position, the movable elements may be actuatable from a closed position to an open position as well.

[0038] At least one electrical contact of the charger is preferably a resilient element.

[0039] The term "elastic element" as used herein refers to an element that can be deformed or deflected by an applied force, but has the ability to return to its original position or state after the applied force is removed. When an elastic element is deformed or bent by a force exerted by a component moving toward the elastic element, the elastic element generates a reaction force that moves the component away from the elastic element. Examples of elastic elements include helical springs and cantilever springs.

[0040] The at least one electrical contact may be a resilient element configured to exert a force on an aerosol generating device received in the cavity in the direction of the cavity opening when the plurality of movable elements are in a closed position. The force exerted by the resilient element advantageously urges the aerosol generating device against the cover, in particular against a profiled engagement member of the cover. The cover in the closed position advantageously ensures electrical communication between the aerosol generating device and the charger.

[0041] The charger may include an aerosol generator release mechanism. The aerosol generator release mechanism may be located within the cavity. The aerosol generator release mechanism may include a resilient element. The resilient element may be configured to urge an aerosol generator received within the cavity toward the cavity opening when the plurality of movable elements are in a closed position. By urging the aerosol generator out of the cavity, the aerosol generator may be more easily removed from the charger by a user of the device because an area of ​​the aerosol generator may be provided on which a user can grip. A user of the charger may grip and interact with this area, facilitating insertion or removal of the aerosol generation from the charger. The aerosol generator release mechanism may be configured to urge the aerosol generator at least partially out of the cavity when the plurality of movable elements are in an open position.

[0042] The aerosol generation release mechanism may be a resilient element in the form of a helical or cantilever spring located within a cavity in the charger.

[0043] The charging device may include a primary power source, which may be electrically connectable to at least one electrical contact of the charger. The aerosol generating device may include a secondary power source, which may be electrically connectable to at least one electrical contact of the aerosol generating device.

[0044] The primary and secondary power sources may include any suitable type of power supply. The primary and secondary power sources may include one or more of a battery and a capacitor. The primary and secondary power sources may include a lithium ion battery. The primary and secondary power sources may be rechargeable power sources. The primary and secondary power sources may be the same. The primary and secondary power sources may be different. The primary power source may have a larger size than the secondary power source of the aerosol generating device. When the charger and the aerosol generating device are electrically connected, this may allow electrical communication between the primary power source and the second power source. The electrical communication between the primary and secondary power sources may allow the secondary power source to be recharged using the primary power source. Thus, the profiled engagement member securing the connection between the aerosol generating device and the charger advantageously ensures that the primary power source recharges the secondary power source when the aerosol generating device is received within the charger and the plurality of movable elements are in the closed position.

[0045] The charger cavity may have dimensions that substantially correspond to the dimensions of the aerosol generating device received within the cavity. The cavity is preferably an elongated cavity that extends from an opening in a surface of the cartridge housing to a closed end located within the cartridge housing. The length of the cavity from its opening to its closed end is preferably substantially similar to the length of the aerosol generating device received within the cavity. The aerosol generating device received within the charger cavity may extend out of or above the opening of the cavity when received within the cavity. This extension out of or above the cavity may be the result of at least one electrical contact of the charger biasing the aerosol generating device out of the cavity.

[0046] The or each profiled engagement member may be a cam surface. The surface of the aerosol generation device received in the cavity may be a cam rider. In particular, the top surface of the aerosol generation device may be a cam rider. If there are multiple profiled engagement members, each profiled engagement may be an individual cam surface and different portions of the surface of the aerosol generation device may be cam riders.

[0047] As used herein, the term "cam surface" refers to a surface of a first component configured to contact a portion of a second component. As used herein, the term "cam rider" refers to a portion of a second component configured to contact the cam surface. The cam surface and cam rider are configured such that motion of the first component is transferred to the second component via contact between the cam surface and the cam rider. Typically, the cam surface passes over the cam rider.

[0048] The profiled engagement members as cam surfaces may be configured to transfer transverse motion from the respective movable elements to the aerosol generating device as a cam rider. The aerosol generating device may follow or overlap the slope of the profiled engagement members as the cover moves from the open position to the closed position. Because the profiled engagement members slope into or toward the cavity, the aerosol generating device is pushed in a direction toward the cavity as the cover moves from the open position to the closed position. This advantageously biases the aerosol generating device against electrical contacts within the cavity.

[0049] The aerosol generating device may overlap the profiled engaging member only after the or each profiled engaging member has engaged with the aerosol generating device.

[0050] Each of the movable elements may move between an open position and a closed position in an actuation plane. Each of the movable elements may move in the same actuation plane. Each of the movable elements may move in different actuation planes.

[0051] As used herein, the term "actuation plane" refers to a plane in which the cover lies when the cover is in a closed position, an open position, or an intermediate position between the closed and open positions. The actuation plane may lie in the x and y directions of a Cartesian coordinate system. The movable element may extend substantially in the x and y directions.

[0052] A direction of inclination of the profiled engagement members may be out of the actuation plane of the respective movable elements. The profiled engagement members may be inclined out of the actuation plane towards the cavity when the respective movable elements are in the closed position.

[0053] As used herein, the term "off the actuation plane" means that a non-zero component of the tilt of the profiled engagement member lies in a direction perpendicular to both the x and y directions defined by the actuation plane. In other words, a non-zero component of the tilt of the profiled engagement member lies in the z direction of a Cartesian coordinate system defined by the actuation plane.

[0054] Each of the movable elements may include an outer surface extending substantially parallel to the actuation surface. The outer surface may be located on an opposite side of the movable elements from the inner surface. The inner surface of the movable elements may include a portion that does not slope into or toward the cavity when the movable elements are in the closed position. A portion of the inner surface of the cover may extend substantially parallel to the sliding surface. A portion of the inner surface of the cover may extend substantially parallel to the outer surface of the cover.

[0055] The charger housing may include a front wall, a rear wall, a bottom wall, a top wall, a first side wall and a second side wall. The charger housing may be a rectangular parallelepiped.

[0056] The charger housing may include a top wall, a bottom wall, and a side wall. The charger housing may be cylindrical.

[0057] The terms "front", "rear", "up", "down", "side", "top", "bottom", "left", "right" and other terms used to describe the relative positions of components of the charger and the aerosol generating device refer to the charger in an upright position with an opening of the cavity configured to receive the aerosol generating device at the top end. The cavity may be formed in the top end. The aforementioned working surface may be substantially parallel to the top end.

[0058] The term "longitudinal" refers to a direction from bottom to top or vice versa.

[0059] The charger housing may include a surface along which the plurality of movable elements are actuatable. This may be a top surface. When actuating the plurality of movable elements from an open position to a closed position, the inner surface of the cover may not slide beyond the surface of the housing. The movable elements do not protrude from the charger housing when in the open position, and therefore there may be no position where the cover has an increased risk of damage. The surface of the housing may lie in a plane substantially parallel to the aforementioned actuation surface. Such an arrangement is advantageously robust.

[0060] The charger may include an actuating member. The charger may include means for actuating the plurality of movable elements from a closed position to an open position in response to operation of the actuating member by a user of the charger. By providing an actuating member for operating the cover, the process of opening and closing the charger is simplified and made more comfortable for the user. For example, the actuating member on the charger housing may advantageously be positioned such that a user holding the charger with one hand can operate the actuating member with the same hand. This may be more comfortable than moving the cover itself. The actuating member may be positioned on a front surface of the charger housing.

[0061] The actuating member may be a rotatable disk. When the actuating member is a rotatable disk, the charger housing is preferably cylindrical. The rotatable disk may be positioned parallel to a bottom surface of the charger. The rotatable disk may have a diameter equal to a diameter of the cylindrical charger.

[0062] The rotatable disk may be configured to be rotated by a user of the charger. Rotation of the rotatable disk may move the movable elements from an open position to a closed position. The means for actuating the plurality of movable elements may be a mechanical link between the rotatable disk and the cover. The mechanical link may be at least one rigid shaft connecting the rotatable disk to an actuation plate. The mechanical link may be configured such that rotation of the rotatable disk causes rotation of an actuation plate of the cover.

[0063] The actuating member may be a slider. When the actuating member is a rotatable disk, the charger housing is preferably a rectangular parallelepiped. The means for actuating the plurality of movable elements may be a mechanical link between the slider and the cover. The mechanical link may be configured such that a movement of the slider is transmitted to the cover. In particular, the movement of the slider may be transmitted to the cover as a rotational movement. The rotational movement may be transmitted to an actuating plate of the cover to cause a rotation of an actuating ring of the cover.

[0064] Alternatively, the actuating member may be a button or a switch. The means for sliding the cover may include an actuator and a mechanical linkage between the actuator and the cover. The actuating member may be configured to transmit an electrical signal to the actuator in response to manipulation of the actuating member by a user of the charger. The actuator may be an electric motor configured to generate a rotational motion. This rotational motion may be transmitted to the cover, in particular the actuating plate, via the mechanical linkage.

[0065] The plurality of movable elements may be biased towards the closed position. Biasing the movable elements towards the closed position advantageously means that the movable elements are biased towards the closed position. As long as the movable elements are in the open position, a biasing force may bias the movable elements back to the closed position automatically. This advantageously prevents the user from inadvertently leaving the cover in the open position. It also advantageously means that the cover will automatically close again if it is inadvertently opened, for example when the charger is stored in the user's pocket. The biasing element may be via a plurality of springs. Each spring may be attached at one end to one of the plurality of movable elements and at the other end to the housing of the charger. Alternatively, one end of the spring may be attached to the base plate of the cover and the other end to the actuation plate of the cover.

[0066] The term "aerosol generating device" as used herein refers to a device that interacts with an aerosol-forming substrate to generate an aerosol that can be inhaled directly into the user's lungs through the user's mouth. In certain embodiments, the aerosol generating device may heat the aerosol-forming substrate to promote the release of volatile compounds. The aerosol generating device may interact with an aerosol-generating article that includes the aerosol-forming substrate, or a cartridge that includes the aerosol-forming substrate. An electrically operated aerosol generating device may include an atomizer, such as an electric heater, for heating the aerosol-forming substrate to form an aerosol.

[0067] As used herein, the term "aerosol-forming substrate" is used to describe a substrate that can release, upon heating, a volatile compound capable of forming an aerosol. The aerosol generated from the aerosol-forming substrate of the aerosol-generating articles described herein may be visible or invisible, and may include vapor (e.g., fine particles of a substance in a gaseous state, e.g., of a substance that is normally a liquid or solid at room temperature) as well as gas and condensed vapor droplets.

[0068] The aerosol-forming substrate may be a solid aerosol-forming substrate. The aerosol-forming substrate may comprise both solid and liquid components.

[0069] Preferably the aerosol-forming substrate comprises nicotine, more preferably the aerosol-forming substrate comprises tobacco.

[0070] Alternatively, or additionally, the aerosol-forming substrate may comprise a non-tobacco-containing aerosol-forming material.

[0071] Where the aerosol-forming substrate is a solid aerosol-forming substrate, the solid aerosol-forming substrate may comprise, for example, one or more of powders, granules, pellets, shreds, threads, strips or sheets, including one or more of herb leaves, tobacco leaves, tobacco stems, expanded tobacco and homogenized tobacco.

[0072] Optionally, the solid aerosol-forming substrate may contain tobacco or non-tobacco volatile flavour compounds, which are released upon heating of the solid aerosol-forming substrate. The solid aerosol-forming substrate may also contain one or more capsules, e.g., containing additional tobacco or non-tobacco volatile flavour compounds, and such capsules may melt during heating of the solid aerosol-forming substrate.

[0073] Optionally, the solid aerosol-forming substrate may be provided on or embedded in a thermally stable carrier. The carrier may take the form of a powder, granules, pellets, pieces, threads, strips or sheets. The solid aerosol-forming substrate may be deposited on the surface of the carrier, for example in the form of a sheet, foam, gel or slurry. The solid aerosol-forming substrate may be deposited on the entire surface of the carrier, or alternatively in a pattern to provide a non-uniform flavor delivery during use.

[0074] Where the aerosol-forming substrate is a liquid, the aerosol-generating article or cartridge may include a means for holding the liquid substrate. The aerosol-forming substrate may alternatively be any other type of substrate, for example a gas substrate, a gel substrate, or any combination of various substrate types.

[0075] The aerosol-forming substrate preferably comprises an aerosol former.

[0076] As used herein, the term "aerosol former" is used to describe any suitable known compound or mixture of compounds that promotes the formation of an aerosol during use and is substantially resistant to thermal decomposition at the operating temperatures of the aerosol-generating article.

[0077] Suitable aerosol formers are known in the art and include, but are not limited to, polyhydric alcohols (such as propylene glycol, triethylene glycol, 1,3-butanediol, glycerin, etc.), esters of polyhydric alcohols (such as glycerol monoacetate, diacetate, triacetate, etc.), and aliphatic esters of mono-, di-, or polycarboxylic acids (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, etc.).

[0078] Preferred aerosol formers are polyhydric alcohols or mixtures thereof, such as propylene glycol, triethylene glycol, 1,3-butanediol, and most preferably glycerin.

[0079] The aerosol-forming substrate may comprise a single aerosol former, alternatively, the aerosol-forming substrate may comprise a combination of two or more aerosol formers.

[0080] The aerosol-forming substrate preferably has an aerosol former content of greater than 5% on a dry weight basis.

[0081] The aerosol-forming substrate may have an aerosol former content of from about 5% to about 30% on a dry weight basis.

[0082] In one preferred embodiment, the aerosol-forming substrate has an aerosol former content of approximately 20% on a dry weight basis.

[0083] The present disclosure also provides an aerosol generation system including a charger and an aerosol generating device. The charger may include a housing defining a cavity for receiving an aerosol generating device to be charged. The cavity may have an opening. The at least one electrical contact may be located within the cavity. The charger may include a cover. The cover may include a plurality of movable elements operable between an open position and a closed position. Each of the movable elements may have an inner surface that faces the cavity when in the closed position. At least a portion of the inner surface of at least one of the movable elements of the cover may define a profiled engagement member having a leading edge and a trailing edge. The profiled engagement member may be sloped into or toward the cavity when the respective movable element is in the closed position. The slope may increase in a direction from the leading edge to the trailing edge of the profiled engagement member. When the aerosol generating device is received within the cavity, the profiled engagement member may be configured to bias the aerosol generating device into engagement with the at least one electrical contact when the plurality of movable elements are in the closed position.

[0084] In one embodiment of the aerosol generation system, the charger comprises a housing defining a cavity for receiving an aerosol generation device to be charged, the cavity having an opening; at least one electrical contact located within the cavity; and a cover including a plurality of movable elements operable between an open position and a closed position, each of the movable elements having an inner surface facing the cavity when in the closed position, wherein at least a portion of the inner surface of at least one of the movable elements of the cover defines a profiled engagement member having a leading edge and a trailing edge, the profiled engagement member being sloped into or toward the cavity when each movable element is in the closed position, the slope increasing in a direction from the leading edge to the trailing edge of the profiled engagement member, and wherein when the aerosol generation device is received within the cavity, the profiled engagement member is configured to urge the aerosol generation device into engagement with the at least one electrical contact when the plurality of movable elements are in the closed position.

[0085] The features of the charger described above may be applied to the charger of the aerosol generating system.

[0086] When the plurality of movable elements are in the open position, the aerosol generating device can be received by the charger within the cavity. When the cover is in the closed position, the aerosol generating device is protected from ambient dust and dirt. In the closed position, the cover also prevents a user from repositioning the aerosol generating device within the charger, ensuring electrical contact between at least one electrical contact of the charger and the aerosol generating device. Such a charger advantageously allows for reliable and efficient charging of the aerosol generating device received within the cavity.

[0087] Biasing the aerosol generating device into engagement with at least one electrical contact ensures that electrical communication is maintained between the aerosol generating device and the charger.

[0088] Each of the plurality of movable elements may include a profiled engagement member that slopes into or towards the cavity when the respective movable element is in the closed position, the slope preferably increasing in a direction from the leading edge to the trailing edge of the profiled engagement member. Each of the profiled engagement members may engage with the aerosol generation device when the movable element is in the closed position. This advantageously ensures that there are multiple points of contact between the plurality of movable elements and the aerosol generation device.

[0089] Where the multiple moveable elements include profiled engagement members, it is preferred that the inclination of each of the profiled engagement members is the same.

[0090] The cover may include an actuation plate. The actuation plate may be in the shape of a ring. The actuation plate may be concentric with the cavity. The cover may include a base plate in the shape of a ring. The base plate ring may be concentric with the cavity. The base plate ring may be positioned inside the actuation plate ring. Alternatively, the actuation plate ring may be positioned inside the base plate ring. The inner ring of the base plate and the actuation plate may have a diameter corresponding to the size of the cavity opening. For example, the diameter of the inner ring may be equal to the diameter of the cavity opening.

[0091] The actuation plate may be configured to be rotatable relative to the charger housing. The actuation plate may be configured to be rotatable relative to the charger housing. Each of the plurality of moveable elements may be connected to the actuation plate. This may be via an actuation arm fixed at one end to the actuation plate and fixed at the other end to the moveable element.

[0092] Each of the plurality of movable elements may also be connected to the base plate. Alternatively, each of the plurality of movable elements may also be connected to the charger housing. The connection to the base plate or the charger housing may be via a pin formed in the base plate or the charger housing.

[0093] The actuation plate may be rotatable relative to the base plate and the charger housing. Each of the plurality of movable elements may be connected to the actuation plate and the base plate or the charger housing such that rotation of the actuation plate may actuate the movable elements from an open position to a closed position.

[0094] The connection of each of the multiple movable elements to the base plate or charger housing may be offset relative to each of the connections of the multiple movable elements to the actuation ring such that rotation of the actuation plate actuates the movable elements about the pivot.

[0095] The cover may include an iris mechanism. The iris mechanism may include a plurality of movable elements. The iris mechanism may also include an actuation plate. The iris mechanism may also include a base plate.

[0096] The cover may include 2-6 movable elements. The plurality of movable elements may be non-overlapping in the closed position. The plurality of movable elements may be non-overlapping in the open position. The non-overlapping arrangement advantageously allows at least one of the movable elements to have a profiled engagement member.

[0097] The charger may include an aerosol generator release mechanism. The aerosol generator release mechanism may be located within the cavity. The aerosol generator release mechanism may include a resilient element.

[0098] At least one electrical contact of the charger may be a resilient element configured to exert a force on an aerosol generating device received in the cavity in the direction of the cavity opening when the cover is in the closed position.

[0099] The charging device may comprise a primary power source. The primary power source may be electrically connectable to at least one electrical contact of the charger. The aerosol generating device may comprise a secondary power source. The secondary power source may be electrically connectable to at least one electrical contact of the aerosol generating device. Electrical communication between the primary power source and the secondary power source may allow the secondary power source to be recharged using the primary power source. Thus, the or each profiled engagement member that ensures a connection between the aerosol generating device and the charger advantageously ensures that the primary source recharges the secondary power source when the aerosol generating device is received in the charger and the cover is in the closed position.

[0100] The charger cavity may have dimensions that substantially correspond to the dimensions of the aerosol generating device received within the cavity. Preferably, the length of the cavity from its opening to its closed end is substantially similar to the length of the aerosol generating device received within the cavity.

[0101] The or each profiled engagement member may protrude into or toward the cavity when the plurality of movable elements is in the closed position.

[0102] The or each profiled engagement member may be a cam surface and the surface of the aerosol generating device received within the cavity may be a cam rider.

[0103] When sliding between the open and closed positions, the plurality of movable elements may move in an actuation plane.

[0104] The charger may include an actuating member. The charger may include means for actuating the plurality of movable elements from an open position to a closed position in response to manipulation of the actuating member by a user of the charger.

[0105] The actuating member may be a slider. The means for actuating the plurality of movable elements may be a mechanical link between the slider and the cover. The means for actuating the plurality of movable elements may be a mechanical link between the slider and an actuating plate of the cover.

[0106] Alternatively, the actuating member may be a slider. The means for actuating the plurality of movable elements may be a mechanical link between the slider and the cover. The means for actuating the plurality of movable elements may be a mechanical link between the slider and an actuating plate of the cover.

[0107] Alternatively, the actuating member may be a button or a switch. The means for actuating the plurality of movable elements may include an actuator and a mechanical link between the actuator and the cover. The mechanical link may be between the actuator and an actuating plate of the cover.

[0108] The plurality of movable elements may be biased toward a closed position.

[0109] In accordance with the present disclosure, there is provided a method of using an aerosol generation system comprising a charger and an aerosol generation device, the charger comprising: a housing defining a cavity for receiving an aerosol generation device to be charged, the cavity having an opening; at least one electrical contact located within the cavity; and a cover including a plurality of movable elements operable between an open position and a closed position, each of the movable elements having an inner surface facing the cavity when in the closed position, at least a portion of the inner surface of at least one of the movable elements of the cover defining a profiled engagement member having a leading edge and a trailing edge, the profiled engagement member sloped into or toward the cavity when each movable element is in the closed position, the slope increasing in a direction from the leading edge to the trailing edge of the profiled engagement member; and the method comprising:

[0110] The method includes inserting an aerosol generating device into a cavity of the charger when the plurality of movable elements are in an open position, and actuating the movable elements from the open position to a closed position, wherein when in the closed position, the profiled engagement member biases the aerosol generating device into engagement with at least one electrical contact.

[0111] The charger may charge the aerosol generating device while the aerosol generating device is received within the cavity and the plurality of movable elements are in a closed position. A controller within the charger may couple a primary power source of the charger to at least one electrical contact of the charger. An aerosol generating device engaged with the at least one electrical contact may be in electrical communication with the at least one electrical contact, e.g., via at least one electrical contact on the aerosol generating device. Thus, a secondary power source located within the aerosol generating device may be charged by the primary power source of the charger. Charging of the aerosol generating device may be coordinated by the controller of the charger.

[0112] The method may also include the step of actuating the movable element from a closed position to an open position when a user desires to use an aerosol generating device received within the charger.

[0113] The charger may include an aerosol generator release mechanism that may urge the aerosol generator out of the charger cavity when the cover is slid to the open position. This may advantageously urge a portion of the aerosol generator out of the cavity. A user of the aerosol generation system may use this portion to pull the aerosol generator out of the cavity.

[0114] The step of sliding the cover from the open position to the closed position (or vice versa) may include a user directly manipulating the cover of the charger. Alternatively, the charger may include an actuation member in the form of a rotating disk, slider, switch, or button, the actuation of which operates the cover. Manipulation of the actuation member may actuate a movable element from the open position to the closed position.

[0115] The plurality of movable elements may be biased towards the closed position. In that case, inserting the aerosol generating device into the cavity of the device may include applying a force on the movable elements against the bias to hold the cover in the open position. This force may be applied directly on the movable elements by a user. Alternatively, the force may be applied via a means for actuating the cover. Sliding the cover from the open position to the closed position may include removing the force holding the cover in the open position, such that the cover automatically moves to the closed position as a result of the biasing element.

[0116] Features described with respect to one example or embodiment may also be applicable to other aspects and embodiments, for example features described with respect to the aerosol generating articles and aerosol generating systems above may also be used in conjunction with methods of using the aerosol generating articles and aerosol generating systems above. [Brief description of the drawings]

[0117] Specific embodiments will now be described with reference to the figures.

[0118] [Figure 1] FIG. 1 shows a schematic diagram of a known electrically operated aerosol generating system comprising an aerosol generating article, an aerosol generating device, and a charging device for charging the aerosol generating device. [Diagram 2] Figure 2 shows a perspective view of a charger with a cover that is slidable between open and closed positions. In this embodiment, the charger is cylindrical and includes an actuating member in the form of a rotatable disk. The cover in Figure 2 is shown diagrammatically. [Figure 3a] Figure 3 shows a plan view of the cover separately from the charger of Figure 2. Figure 3a shows the cover in an open position, and Figure 3b shows the cover in a (near) closed position. [Figure 3b] Same as above. [Figure 4a]Figure 4 shows a cross-sectional perspective view of the charger of Figure 2. Figure 4a shows the cover in an open position, Figure 4b shows the cover in a closed position, and Figure 4c shows the cover in an intermediate position between the open and closed positions. [Figure 4b] Same as above. [Figure 4c] Same as above. [Diagram 5] FIG. 5 shows an enlarged perspective view of one of the actuatable elements of the cover of FIGS. 2-4, separate from the remainder of the cover. [Figure 6] FIG. 6 shows another embodiment of the charger in which the actuating member is a slider. [Figure 7] FIG. 7 shows a schematic cross-sectional view of the charger of FIG. [Figure 8] FIG. 8 shows a cross-sectional schematic view of another embodiment of the charger in which the actuation means is an electric motor. [Figure 9] FIG. 9 shows a cross-sectional schematic diagram of one embodiment of a charger with an aerosol generator release mechanism. [Figure 10] FIG. 10 shows a flow diagram of a method of using an aerosol generation system that includes a charger and an aerosol generation device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0119] 1 shows a schematic diagram of a known electrically powered aerosol generating system, which comprises a charger 1, an aerosol generating device 20 and an aerosol generating article 30.

[0120] The charger 1 comprises a housing 2 having the general size and shape of a conventional packet of cigarettes. A lithium ion battery 3 and electrical circuitry 4 are contained within the charger 1. The charger 1 further comprises a generally annular cylindrical shaped cavity 5 for receiving an aerosol generating device 20. The cavity 5 is defined by the housing 2. Electrical contacts (not shown) are disposed at a closed end of the cavity 5 for electrically connecting an aerosol generating device received within the cavity 5 to the battery 3 of the charger 1.

[0121] The aerosol generating device 20 is substantially annular and cylindrical, with typical dimensions for a conventional cigar cigarette. The length of the device 20 is substantially the same as the length of the cavity 5, and the diameter of the device 20 is slightly smaller than the diameter of the cavity 5, such that the device 20 fits snugly within the cavity 5. The aerosol generating device 20 includes an open cavity 21 at a proximal end for receiving an aerosol-generating article. The aerosol generating device 20 further includes a battery (not shown) contained within the housing of the device, and an electric heater (not shown) disposed within the cavity 21 for heating at least a portion of the aerosol-generating article 30 when the aerosol-generating article 30 is received in the cavity 21.

[0122] The aerosol-generating article 30 includes an aerosol-forming substrate (not shown) comprising a collection of crimped tobacco sheets, and a filter (not shown) arranged back-to-back with the aerosol-forming substrate in the form of a rod. The aerosol-generating article 30 has a diameter substantially equal to the diameter of the cavity 21 of the device 20 and a length greater than the cavity 21, such that when the article 30 is received in the cavity 21 of the device 20, the filter extends out of the cavity 21 and can be withdrawn by the user, similar to a conventional cigarette.

[0123] In use, a user inserts article 30 into cavity 21 of device 20 and turns on device 20 to activate the electric heater. The electric heater heats the aerosol-forming substrate of article 30 such that volatile compounds in the aerosol-forming substrate are released and atomized to form an aerosol. A user sucks on the mouthpiece of article 30 and inhales the aerosol generated from the heated aerosol-forming substrate. After use of device 20, article 30 may be removed from device 20 for disposal, and device 20 may be placed in charger 1 for storage and to charge the battery of device 20.

[0124] 2 shows a perspective view of charger 100, which includes a charger housing 102, a cover 110, and an actuating member in the form of a rotatable disk 130. The charger also includes two electrical contacts (not shown in FIG. 2) located within the cavity, and a power source (not shown) in the form of a rechargeable battery.

[0125] The charger housing 102 has a cylindrical shape. The rotatable disc 130 also has a cylindrical shape. The diameter of the rotatable disc 130 is the same as the diameter of the charger housing 102, and the rotatable disc 130 is concentric with the charger housing 102.

[0126] The cover 110 is shown generally in Figure 2. A more detailed view of the cover is shown in Figure 3. The cover includes a base plate ring 112, an actuation ring 114, and four movable elements 116. In Figure 2, the movable elements 116 are shown in a closed position where each individual movable element is in contact with two other movable elements. The movable elements 116 do not overlap. The movable elements 116 are shaped such that when the movable elements 116 are in the closed position, contact between the movable elements creates a continuous surface.

[0127] A cavity 120 for receiving an aerosol generating device is defined within the charger housing 102. The cavity 120 includes cavity walls 122 and a cavity opening 124 defined in the top surface 104 of the charger housing 102. The cavity opening 124 is aligned with the cover. Because the cavity is formed within the charger housing and the cover 110 is shown in a closed position in FIG. 2, the cavity 120, cavity walls 122 and cavity opening 124 are not visible. However, the location of the cavity within the charger is indicated by dashed line 121. Features of the cavity 120 can be seen in FIG. 4.

[0128] The movable element 116 is actuable between an open position and a closed position.

[0129] The cover is shown separate from the remainder of the charger 100 in FIG. 3. The cover includes an iris mechanism. Each of the movable elements 116 is connected to the base plate ring 112 and the actuation plate ring 114. The connection of each of the movable elements 116 to the base plate ring is through a pin formed in the base plate ring 112. Each pin is connected to the movable element 116 at a connection 306 on the respective movable element 116. The movable elements may rotate about the connections 306.

[0130] The connection of the moveable elements 116 to the actuation ring 114 is via connecting arms 302. Each connecting arm is connected to the moveable element at a connection 304 at one end of the connecting arm 302. The other end of the connecting arm 302 is connected to the actuation ring 114 via a pin in the actuation ring 114. Each of the moveable elements 116 can rotate about the connection 304 and each actuation arm 302 can rotate about an actuation point 305.

[0131] The actuation ring 112 is rotatable relative to the base plate ring 114. Rotation of the actuation ring 112 actuates the movable elements 116. This actuation is possible because each of the connections 304, 305 and 306 allow rotation about the connection, and because of the offset of the connection points. Thus, as the actuation ring 114 rotates, the movable elements 116 are actuated from the open position shown in FIG. 3a to the nearly closed position shown in FIG. 3b. By connecting the movable elements 116 via the connecting arms 302, rather than directly to the actuation ring (as is typical for iris mechanisms), the movement of each of the movable elements 116 can be configured to avoid overlapping with the other movable elements in either the open or closed positions. As explained below, this advantageously allows the inner surfaces of the movable elements to be angled to form a profiled engagement member.

[0132] FIG. 3b shows the moveable elements in an approximately closed position, not quite reaching the closed position shown in FIG. 2 (i.e. the position where the moveable elements form a continuous surface).

[0133] The diameter of the actuation ring 114 corresponds to the diameter of the cavity 120 (the cavity is cylindrical). The actuation ring 114 is also concentric with the cavity 120. Thus, when the movable element 116 is in the open position, the cavity 120 is accessible such that an aerosol generating device can be received by the charger 100 in the cavity 120. In the closed position, the movable element 116 is positioned to close the cavity 120 by facing the cavity 120. Closing the cavity protects the cavity 120 from ambient dust and dirt and prevents the user from changing the position of the aerosol generating device received in the cavity of the charger. The charger housing 102 acts as a case for the aerosol generating device received in the cavity and provides protection to the aerosol generating device.

[0134] In the closed position, the movable element 116 also serves to ensure electrical contact between an aerosol generating device received within the cavity and electrical contacts of a charger (not shown in FIG. 2) received within the cavity, as will be described in more detail below with reference to FIGS. 4 and 5.

[0135] Figure 4 shows a cross-sectional schematic of the charger 100 with an aerosol generating device 400 received within the cavity 120. Two of the four movable elements 116 are visible in the cross-section. Figure 4a shows the movable elements 116 in an open position. Figure 4b shows the movable elements 116 in a closed position. Figure 4c shows the movable elements in an intermediate position between the open position of Figure 4a and the closed position of Figure 4b.

[0136] Each of the movable elements 116 includes an inner surface 410, a portion of which defines a profiled engagement member 412. The profiled engagement member 412 includes a leading edge 414 and a trailing edge 416. As shown in FIG. 4b, the profiled engagement member 412 is sloped toward the cavity 120 when the movable elements 116 are in the closed position. The slope of the profiled engagement member 412 increases in the direction from the leading edge 414 to the trailing edge 416.

[0137] The slope of the profiled engagement member 412 is more clearly shown in Figure 5, a perspective view of the actuation member 116 shown separate from the remainder of the cover. The slope of the profiled engagement member 412 increases from a leading edge 414, defined at the point of the profiled engagement member 412 that is furthest from the two connection points 304 and 306, to a trailing edge 416. After the trailing edge, the thickness of the movable element 116 remains constant, defining a portion 502. The inner surface portion 502 does not engage an aerosol generating device received within the cavity when the movable element is in the closed position because it extends over other features of the cover (e.g., the baseplate ring 112).

[0138] The aerosol generating device comprises two electrical contacts 402 and 403. The aerosol generating device also comprises a power source in the form of a rechargeable battery (not shown). The rechargeable battery of the aerosol generating device is electrically connectable to the two electrical contacts 402 and 403.

[0139] Two electrical contacts 404 and 405 are located within the cavity of the charger. Electrical contacts 402 and 403 of the aerosol generating device align with electrical contacts 404 and 405 of the charger when the aerosol generating device is received within the cavity. When there is an electrical connection between the electrical contacts of the charger and the electrical contacts of the aerosol generating device, the rechargeable battery of the charger can be used to recharge the rechargeable battery of the aerosol generating device. To reliably charge the rechargeable battery, the electrical connection needs to be largely consistent.

[0140] The electrical contacts 404 and 405 are resilient elements in the form of cantilever springs. As shown in Figure 4a, the electrical contacts 404 and 405 extend upward from the closed end of the cavity toward the cavity opening when the movable element 116 is in the open position. When the aerosol generating device 400 is received within the cavity and the movable element is in the open position, the aerosol generating device rests on the electrical contacts 404 and 405 (assuming the charger remains upright).

[0141] The cavity extends from the closed end, where the electrical contacts 404 and 405 are located, to the cavity opening 124. In this embodiment, the base plate 112 is placed in the charger housing such that the top of the base plate is aligned with the top of the cavity opening 124. The aerosol generating device 400 has substantially the same length as the length of the cavity. However, because the electrical contacts 404 and 405 extend upward, an aerosol generating device received in the cavity resting on the electrical contacts 404 and 405 will extend above the level of the cavity opening 124.

[0142] When movable element 116 is in the open position, electrical communication between electrical contacts 402 and 404 and electrical contacts 403 and 405 may not be ensured and may be inconsistent. For example, if charger 100 is not stored in an upright position, or is shaken or dropped, electrical communication will likely not be maintained between the electrical contacts.

[0143] When the movable element 116 is in the closed position, electrical communication between the electrical contacts 402 and 404 and the electrical contacts 403 and 405 is ensured because, in the closed position, the profiled engagement member 412 engages with the top surface 422 of the aerosol generating device 400 received within the cavity 120. The engagement ensures that the aerosol generating device 400 is in electrical communication with the electrical contacts 402, 404, 403 and 405 regardless of the orientation of the charger and any sudden forces applied to the charger, for example if the charger is dropped. In other words, the engagement ensures that contact is maintained between the electrical contacts 402 and 403 of the charger and the electrical contacts 404 and 405 of the aerosol generating device.

[0144] Electrical communication is ensured because the profiled engagement member 412 applies a force to the top surface 422 of the aerosol generating device to urge the aerosol generating device into the cavity 120, towards and against the electrical contacts 404 and 405. The applied force causes the electrical contacts 404 and 405 to deform, generating a reaction force that urges the aerosol generating device 400 to move away from the electrical contacts 404 and 405 (i.e., a reaction force that pushes the aerosol generating device 400 back out of the cavity 120). When the movable element 116 is in the closed position, the reaction force applied by the electrical contacts 404 and 405 urges the aerosol generating device against the movable element 116, and in particular against the profiled engagement member 412. This arrangement ensures contact between the aerosol generating device 400 and the charger's electrical contacts 404 and 405.

[0145] In the embodiment shown in Figure 4, the profiled engagement member 412 is configured to initially engage with a top surface 422 of the aerosol generation device 400 received within the cavity 120 in an intermediate position of the cover (i.e., a position between the open and closed positions), which is the position shown in Figure 4c.

[0146] As the movable element 116 is actuated from the open position to the closed position, each of the profiled engagement members 412 moves into overlapping relationship with the cavity 120. It is the leading edge 414 that moves into overlapping relationship with the cavity first.

[0147] As a result of the slope of the profiled engagement members, each of the profiled engagement members 412 protrudes increasingly into the cavity as the movable element 116 approaches the closed position. In the intermediate position shown in Figure 4c, the overlap is such that the profiled engagement members 116 protrude sufficiently into the cavity to first contact and then engage the top surface 422 of the aerosol generation device 400. Such an arrangement provides a smooth engagement between the profiled engagement portions and the aerosol generation device 300.

[0148] Each profiled engagement member 412 remains engaged with the aerosol generation device 400 as the movable element 116 is actuated from the intermediate position of Figure 4c to the closed position of Figure 4b. As the profiled engagement members 412 progressively protrude into the cavity, an increasing force is applied to the aerosol generation device 300, urging the aerosol generation device into contact with the electrical contacts 404 and 405. The electrical contacts 404 and 405 then progressively deform from their extended state, exerting an increasing reaction force urging the aerosol generation device back out of the cavity.

[0149] Each of the profiled engagement members 412 follows a similar path and engages with the aerosol generation device 400 at the same point in the movement of each of the movable elements 116. The inclination of each of the profiled engagement members 412 is the same. Thus, each of the profiled engagement members 412 protrudes similarly towards the cavity at the same point in the movement of each of the movable elements 116 compared to the profiled engagement members 412 of the other movable elements 116. This results in the same force being applied to the aerosol generation device from each side by each of the movable elements, ensuring that an even force is applied to the aerosol generation device. This also ensures that the force is evenly distributed between the movable elements 116.

[0150] Each profiled engagement member 412 acts as a cam surface, with the aerosol generation device 400 acting as a cam rider that follows the motion of the cam surfaces. As the movable elements are actuated from the open position to the closed position, the transverse motion of the profiled engagement members 412 is translated into longitudinal motion of the aerosol generation device 400 into the cavity.

[0151] As previously explained, the movable elements 116 are actuated as a result of rotation of the actuation ring 114 relative to the baseplate ring 112. In the embodiment shown in Figures 2 and 4, the charger is provided with an actuation member in the form of a rotating disk 130 that causes rotation of the actuation ring 114 relative to the baseplate ring 112 to actuate the movable elements 116.

[0152] The rotatable disk 130 rotates about a point aligned with the center of the actuation plate 114. Two rigid shafts 432 attach the rotatable disk 130 to the actuation ring 114. The rigid shafts 432 pass through a hollow defined within the charger housing 102. When a user rotates the rotatable disk 130, rotational motion is transferred directly from the rotatable disk 130 to the actuation ring 114 by the rigid shafts 432. Thus, a user can manipulate the movable element 116 by rotating the rotatable disk 130.

[0153] Attached to the rotatable disk 130 is a biasing element in the form of a coil 450. The coil 450 is attached to the charger housing 102 at a first end 452 and to the rotatable disk 130 at a second end 454. The coil is a resilient element and is configured such that the natural, undeformed state of the coil 450 is when the rotatable disk 130 is in a position such that the movable element 116 is in a closed position. When the rotatable disk 130 is in a position such that the movable element 116 is in an open position, the spring 450 is in a deformed state. Thus, when the movable element 116 is in the open position, the spring 450 exerts a force on the rotatable disk 130, biasing the rotatable disk to rotate to a position such that the movable element 116 closes the cavity 120.

[0154] As long as the movable element 116 is in the open position or an intermediate position between the open and closed positions, the movable element 116 is biased back toward the closed position by the coil 450 exerting a force on the rotatable disk 130. This prevents a user of the charger from inadvertently leaving the cover in the open position. Additionally, if the cover is accidentally opened, the coil 450 automatically recloses the cover.

[0155] Although the coil 450 is shown attached at one end to the rotatable disk 130 and at the other end to the charger housing 102, other designs are possible. A biasing element that is in a natural state when the movable element 116 is in the open position, but that deforms due to the relative movement of one component with respect to the other component when the movable element 116 is in the open position, would have the same effect. For example, the biasing element could be attached at one end to the actuation ring 114 and at the other end to the base plate ring 112. In another embodiment, a biasing element could be attached to each of the movable elements. The other end of each of the biasing elements could be attached to the base plate ring 112.

[0156] 6 shows a perspective view of an embodiment of a charger that includes a slider tab 602 as the actuating member rather than a rotatable disk. In this embodiment, the charger housing 102 has a rectangular parallelepiped shape.

[0157] The slider tab 602 may slide along an elongated opening 604 in the charger housing 102. In the position of the slider tab 602 shown in FIG. 6, the movable element 116 is in a closed position. Sliding the slider tab 602 along the elongated opening 604 actuates the movable element 116 to an open position. The cover in FIG. 6 is the same as described in connection with the previous embodiment. However, in this embodiment, the sliding motion of the sliding tab 602 must first be converted into a rotational motion before being transmitted to the actuation ring 114. This is shown in FIG. 7, which is a cross-sectional schematic of the charger shown in FIG. 6.

[0158] 7 shows how the slider tab 602 is attached to a toothed rail 702 that engages with a cog 704. The toothed rail 702 and the cog 704 have a rack and pinion relationship. Movement of the slider tab 602 causes linear motion of the toothed rail 702. The toothed rail 702 engages with the cog 704 (pinion) such that the linear motion of the toothed rail 702 causes the cog 704 to rotate. This translates the linear motion of the slider tab 602 into rotational motion of the cog 704.

[0159] The cog 704 is attached to a rigid shaft 706. At one end of the rigid shaft 706 is a wheel 708. The wheel 708 is in contact with the actuation ring 114 of the cover 110. When the cog 704 rotates in response to linear motion of the slider 602, this also rotates the rigid shaft 706, causing the wheel 708 to rotate. Friction between the wheel 708 and the actuation ring 114 causes the actuation ring to rotate relative to the baseplate ring 112. Thus, sliding the slider tab 602 actuates the moveable element 116.

[0160] A biasing element (not shown) may be attached at one end to the slider tab 602 and at the other end to the charger housing 102. The natural state of the biasing element is when the slider tab 602 is in a position such that the movable element 116 is in a closed position. Sliding the slider tab 602 along the elongated opening 604 deforms the biasing element.

[0161] In some embodiments, instead of a slider or rotatable disk, the charger includes an actuation member in the form of a button or switch (not shown) positioned within the charger housing 102. A user may operate the button or switch, which sends a signal to a controller (not shown). The controller, in response to the actuation, then controls an electric motor configured to actuate the movable element 116 from an open position to a closed position.

[0162] FIG. 8 shows a cross-sectional view of a charger with an electric motor 802. The electric motor 802 replaces the rack and pinion arrangement of FIG. 7. A rigid shaft 804 is connected to the electric motor 802. The electric motor 802 is configured to receive an electrical signal from a button or switch via a controller. When a user presses the button or flips the switch, the controller causes the electric motor to rotate the rigid shaft 804. This results in the rotation of a wheel 806 positioned at the end of the rigid shaft 804. The wheel 806 contacts the actuation ring 114, and friction between the actuation ring 114 and the wheel means that rotation of the wheel 806 rotates the actuation ring 114, actuating the moveable element 116.

[0163] 9 shows a cross-sectional schematic of a charger with an aerosol generating device release mechanism. The cover 110 is shown in the open position. The aerosol generating device release mechanism is a helical spring 902 located in the cavity 120 between electrical contacts 404 and 405. The helical spring is configured to bias the aerosol generating device out of the cavity 120 (i.e., above the cavity opening 12) when the cover is in the open position. The spring 902 presses against a bottom surface 904 of the aerosol generating device 400. By biasing the aerosol generating device 400 out of the cavity, the aerosol generating device 400 can be more easily removed from the charger by a user of the device because it provides a portion of the aerosol generating device that can be held by the user.

[0164] When the cover is in the closed position, spring 902 is compressed and, as previously described, presses the aerosol generating device against electrical contacts 404 and 405. However, to close the cover, a user of the device must manually push the aerosol generating device below the level of cover 110 so that the profiled engagement members can move into overlapping relationship with the cavities.

[0165] FIG. 10 is a flow chart outlining a method of using an aerosol generation system according to the present disclosure.

[0166] In step 1002, the aerosol generating device is received within a cavity of the charger, when the movable element is in the open position.

[0167] In step 1004, the user actuates the movable element from an open position to a closed position. As described above, the movable element engages the aerosol generating device as the movable element is actuated to the closed position. In the closed position, the cover biases the aerosol generating device into engagement with at least one electrical contact. This ensures that an electrical connection between the aerosol generating device and the charger is maintained, allowing the aerosol generating device to be reliably charged by the charger when the movable element is in the closed position.

[0168] To actuate the movable element, a user manipulates an actuation member, which, as discussed, may be in the form of a rotatable disk, slider, button or switch.

[0169] In step 1006, the user actuates the movable element from the closed position to the open position. The user does this in order to access the aerosol generating device received within the cavity and to remove the aerosol generating device (as in method step 1008).

[0170] In some embodiments, the movable elements are biased closed. In these embodiments, the movable elements automatically return from the open position to the closed position. Thus, step 1004 can be automatic.

[0171] In the open position, the aerosol generator is urged out of the cavity by the aerosol generator release mechanism. By urging the aerosol generator out of the cavity, a portion of the aerosol generator extends out of the cavity. A user of the aerosol generation system can use this portion to assist in removing the aerosol generator. If the charger includes an aerosol generator release mechanism, step 1004 may require the user to manually push the aerosol generator into the cavity and compress the aerosol generator release mechanism before actuating the movable element to the closed position.

Claims

1. A charger for charging an aerosol generating device, comprising: a housing defining a cavity for receiving the aerosol generating device for charging, the cavity having an opening; at least one electrical contact located within the cavity; a cover including a plurality of movable elements actuatable between an open position and a closed position, each of the movable elements having an inner surface facing the cavity when in the closed position; at least a portion of the inner surface of at least one of the movable elements of the cover defines a shaped engagement member having a leading edge and a trailing edge; a charger, wherein the molded engagement members protrude and slope into or toward the cavity when the respective movable elements are in the closed position, the protrusion increasing in a direction from the leading edge to the trailing edge of the molded engagement members.

2. 2. The charger of claim 1, wherein each of the plurality of movable elements includes a shaped engagement member that protrudes and slopes into or toward the cavity when the respective movable element is in the closed position, the protrusion increasing in a direction from the leading edge to the trailing edge of the shaped engagement member.

3. The charger of claim 1 or 2, wherein the cover further includes an actuation plate rotatable relative to the charger housing, rotation of the actuation plate actuating the plurality of movable elements from the open position to the closed position.

4. The charger of any one of claims 1 to 3, wherein the cover includes an iris mechanism, and the plurality of movable elements form part of the iris mechanism.

5. The charger of any one of claims 1 to 4, wherein the cover comprises 2 to 6 movable elements.

6. The charger of any one of claims 1 to 5, wherein in the closed position the movable elements are non-overlapping.

7. The charger of any one of claims 1 to 6, wherein the molded engagement member is configured to urge an aerosol generating device received in the cavity into engagement with the at least one electrical contact when the plurality of movable elements are actuated from the open position to the closed position.

8. The charger of any one of claims 1 to 7, wherein the shaped engagement member is a cam surface and the upper surface of the aerosol generating device received within the cavity is a cam rider.

9. 9. The charger of claim 1, wherein upon actuation between the open and closed positions, the plurality of movable elements move within an actuation plane and the shaped engagement members tilt out of the actuation plane.

10. 10. The charger of claim 1, further comprising an actuating member and means for actuating the plurality of movable elements of the cover in response to manipulation of the actuating member by a user of the charger.

11. 11. The charger of claim 10, wherein the actuating member is a rotatable disk or slider, and the means for actuating the plurality of movable elements of the cover is a mechanical link between the actuating member and the cover.

12. 11. The charger of claim 10, wherein the actuating member is a button or switch, and the means for actuating the plurality of movable elements of the cover includes an electric motor and a mechanical linkage between the electric motor and the cover.

13. The charger of any one of claims 1 to 12, further comprising an aerosol generator release mechanism configured to apply a force to an aerosol generator received in the cavity in the direction of the cavity opening when the plurality of movable elements are in the closed position.

14. An aerosol generating system comprising a charger and an aerosol generating device, the charger comprises a housing defining a cavity for receiving the aerosol generating device to be charged, the cavity having an opening; at least one electrical contact located within the cavity; and a cover including a plurality of movable elements operable between an open position and a closed position, each of the movable elements having an inner surface facing the cavity when in the closed position; at least a portion of the inner surface of at least one of the movable elements of the cover defines a shaped engagement member having a leading edge and a trailing edge, the shaped engagement member protruding and inclined into or toward the cavity when the respective movable element is in the closed position, the protrusion increasing in a direction from the leading edge to the trailing edge of the shaped engagement member; An aerosol generation system, wherein when the aerosol generation device is received within the cavity, the shaped engagement member is configured to urge the aerosol generation device into engagement with the at least one electrical contact when the plurality of movable elements are in the closed position.

15. 1. A method of using an aerosol generation system comprising a charger and an aerosol generation device, comprising: the charger comprising: a housing defining a cavity for receiving the aerosol generating device to be charged, the cavity having an opening; at least one electrical contact located within the cavity; a cover including a plurality of movable elements actuatable between an open position and a closed position, each of the movable elements having an inner surface facing the cavity when in the closed position; at least a portion of the inner surface of at least one of the movable elements of the cover defines a shaped engagement member having a leading edge and a trailing edge; the shaped engagement members protrude and slope into or toward the cavity when the respective movable elements are in the closed position, the protrusion increasing in a direction from the leading edge to the trailing edge of the shaped engagement members; The method further comprising: inserting the aerosol generating device into the cavity of the charger while the cover is in the open position; and actuating the movable element from the open position to the closed position; In the closed position, the molded engagement member of the cover biases the aerosol generation device into engagement with the at least one electrical contact.

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