Wireless charging mount

Abstract

Disclosed is a wireless charger for wirelessly charging a mobile electronic device having a receiving coil. The wireless charger may include a charger body having a charging surface and a transmitting coil contained within the body, a mounting configured to mount a case containing the mobile electronic device to the body, and a magnetic element configured for use in magnetically securing the mobile electronic device relative to the charger body. Relative movement is provided between the magnetic element and the charger body to enable the charger to adopt a plurality of configurations to enable a user to select a first configuration of the charger to mount the mobile electronic device to the charger body by a mounting or a second configuration to mount the mobile electronic device to the charger body by the magnetic element.

Description

WIRELESS CHARGING MOUNTTECHNICAL FIELD

[0001] This disclosure relates a wireless charger for wirelessly charging a mobile electronic device having a receiving coil.BACKGROUND ART

[0002] Incorporating wireless charging capabilities into mobile electronic devices such as smartphones, smartwatches or wireless earbuds is now commonplace due to its convenience over cable connections.

[0003] Wireless charging involves a magnetic loop antenna provided in a charging device (a “transmitting coil”) which creates a changing magnetic field. If a magnetic loop receiver (a “receiving coil”) located in a mobile electronic device, is in sufficient proximity to the transmitting coil, then a current is created in the receiving coil which charges the device. Wireless charging can take the form of inductive charging which relies on mutual inductance between the transmitting coil and receiving coil, or resonant charging which uses magnetic resonance to transfer power. Inductive charging requires precise alignment between the coils for effective power transfer whereas resonant charging allows greater spatial freedom. Most mobile electronic devices rely on inductive charging because it is less complex to implement requiring less specialized hardware.

[0004] In inductive wireless charging, the proximity of the transmitting and receiving coils will influence the effectiveness of power transfer. As such, this can become a design constraint that may constrain the functionality of the charger in other respects, for example, to enable mechanically mounting of the device to the charger, and / or to allow compatibility of the charger with cases of the mobile device.

[0005] Further, to enable compatibility of wireless charging across different devices, wireless charging standards are used. In some instances, such as in the Qi2 standard introduced by the Wireless Power Consortium, faster inductive charging speeds can occur between the mobile electronic device and the charger when an authentication process is successful completed. This requires that the mobile device and the charger are appropriately accredited to meet the Qi2 standard. To meet such accreditation, a charger needs to meet certain design criteria such as the spacing of the transmitting coil from the receiving coil during charging and ensuring correct placement, typically by magnetic attraction, of the mobile device on the charging surface. However, again, such design standards may constrain the functionality of the charger in other respects.

[0006] It is to be understood that, if any prior art is referred to herein, such reference does not constitute an admission that the prior art forms a part of the common general knowledge in the art, in Australia or any other country.SUMMARY

[0007] Disclosed is a wireless charger for wirelessly charging a mobile electronic device having a receiving coil. The wireless charger may include a charger body having a charging surface, a transmitting coil contained within the charger body, and a mounting configured to mount an accessory containing the mobile electronic device to the charger body. The wireless charger may further comprise a magnetic element configured for use in magnetically securing the mobile electronic device relative to the charger body.

[0008] In use, the charger is configured to supply electrical energy to the transmitting coil for charging the mobile electronic device when held in relation to the body by the mounting or the magnetic element.

[0009] In some embodiments, at least one of the mounting and the magnetic element is movable relative to the charger body to enable the charger to adopt a plurality of configurations to enable a user to select a first configuration of the charger to mount the mobile electronic device to the charger body by the mounting or a second configuration to mount the mobile electronic device to the charger body by the magnetic element.

[0010] Also disclosed is a wireless charger for wirelessly charging a mobile electronic device having a receiving coil comprising: a charger body comprising a mounting head having a charging surface and a mounting configured to form part of a mechanical coupling to retain an accessory associated with the mobile electronic device to the charger body when the mounting head is received within a recess in the accessory, a transmitting coil disposed within the body in close proximity to the charging surface, and a magnetic element configured to locate at least partially around the mounting head for use in magnetically retaining the mobile electronic device relative to the mounting head, wherein at least one of the mounting head and the magnetic element is movable relative to the other to enable the charger to adopt a plurality of configurations to enable a user to select a first configuration of the charger where the mounting head is exposed to allow the mounting head to be received in the recess of the accessory for mechanical coupling or a second configuration where the magnetic element is disposed at the mounting head for retaining the mobile electronic device to the mounting head by the magnetic element.

[0011] In some embodiment in the second configuration, the magnetic element is positioned substantially flush with the charging surface.

[0012] In some embodiments, the charger body further comprises a base portion having one or more lateral extensions extending outwardly from the mounting head and housing a magnet array configured to assist alignment of the accessory onto the mounting head.

[0013] In some embodiments, the magnet array of the base portion and magnets of the magnetic element are arranged to magnetically attract for alignment of the magnetic element relative to the charger body in the second configuration.

[0014] In some embodiments, the magnetic element defines an opening sized to receive at least a portion of the mounting head and comprises one or more slots contiguous with an inner wall of the opening for alignment and interlock with the mounting on the mounting head.

[0015] In some embodiments, the magnetic element is releasably secured to the mounting head by relative rotation following receipt of the mounting in the slots.

[0016] In some embodiments, the transmitting coil is disposed at least partially within the mounting head in close proximity to the charging surface.

[0017] In some embodiments, the mounting comprises outwardly projecting tabs receivable by slots formed contiguous with a recess in a rear surface of the accessory.

[0018] Also disclosed is a wireless charger for wirelessly charging a mobile electronic device having a receiving coil comprising: a charger body comprising a charging surface, a transmitting coil disposed within the body in close proximity to the charging surface; and a magnetic element configured to locate at least partially around the charger body for use in magnetically retaining the mobile electronic device relative to the mounting head, wherein the magnetic element is releasably retained on the charger body.

[0019] In some embodiments, the magnetic element is mounted to the charger body through a retaining mechanism that retains the magnetic element to the charger body in both the first and second configurations.

[0020] In some embodiments, the retaining mechanism comprises a hinged connection.

[0021] In some embodiments, the magnetic element is captured on the charger body through the retaining mechanism and capable of relative axial displacement between the first and second configuration.

[0022] In some embodiments, the charger further comprising a compression spring located between the magnetic element and the charger body configured to bias the magnetic element to the second position.

[0023] In some embodiments, the magnetic element is mounted to charger body, and the charger further comprises a releasable coupling that retains the magnetic element relative to the charger body.

[0024] In some embodiments, the magnetic element is removable from charger body.

[0025] In some embodiments, the releasable coupling is any one of mechanical fasteners, or a threaded, mechanically interfitting, snap fit, magnetic or interference coupling.

[0026] In some embodiments, the magnetic element is in the form of a circular magnetic array that surrounds charger body.

[0027] In some embodiments, the charger body comprises a lower surface having an attachment region configured to receive ancillary support arrangements.BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Embodiments will now be described by way of example only, with reference to the accompanying drawings in which:

[0029] Fig. la is a perspective view of an embodiment of a case for a mobile device with various mounting arrangements.

[0030] Fig. lb is a perspective view of an embodiment of a case, the case in line for connection to a mount.

[0031] Figs. 1c to If show alternative magnetic arrays.

[0032] Fig. 2a shows a perspective view of a first embodiment of a wireless charger in a first configuration.

[0033] Fig. 2b shows a sectional side view of the wireless charger of Fig. 2 and a mobile electronic device within a case.

[0034] Fig. 3a shows a perspective view of the wireless charger of Fig. 2a in a second configuration.

[0035] Fig. 3b shows an exploded perspective view of the wireless charger of Fig.2a.

[0036] Fig. 3c shows a sectional side view of the wireless charger in the configuration of Fig. 3a with a mobile device.

[0037] Fig. 3d shows a sectional side view of the wireless charger in the configuration of Fig. 3a with a mobile electronic device within a case.

[0038] Fig. 4a to 4c show a second embodiment of wireless charger, where Fig. 4a shows a perspective view of the wireless charger in the second configuration t; Fig. 4b shows a perspective view of the wireless charger in the first configuration; and Fig. 4c shows a sectional side view of the wireless charger of Fig 4a.

[0039] Fig. 5a to 5c show a third embodiment of wireless charger, where Fig.5a shows a perspective view of the wireless charger in the second configuration; Fig. 5b shows a perspective view of the wireless charger in the first configuration; and Fig. 5c shows a sectional side view of the wireless charger of Fig. 5a.

[0040] Fig. 6a to 6c show a fourth embodiment of the wireless charger, where Fig. 6a shows a perspective view of the wireless charger in the second configuration; Fig. 6b shows a perspective view of the wireless charger in the first configuration; and Fig. 6c shows a sectional side view of the wireless charger of Fig 6a.

[0041] Fig. 7a to 7c show a fifth embodiment of the wireless charger, where Fig. 7a shows a perspective view of the wireless charger in the second configuration; Fig. 7b shows a perspective view of the wireless charger a in the first configuratio7; and Fig. 6c shows a sectional side view of the wireless charger of Fig. 7a.

[0042] Fig. 8a to 8c show a sixth embodiment of the wireless charger, where Fig. 8a shows a perspective view of the wireless charger in the second configuration; Fig. 8b shows a perspective view of the wireless charger in the first configuration; and Fig. 8c shows a sectional side view of the wireless charger of Fig. 8a.

[0043] Fig. 9a to 9c show a seventh embodiment of a wireless charger i, where Fig. 9a shows a perspective view of the wireless charger in the second configuration; Fig. 9b shows a perspective view of the wireless charger in the first configuration; and Fig. 9c shows a sectional side view of the wireless charger of Fig. 9a.

[0044] Fig. 10a to 10c show an eighth embodiment of a wireless charger, where Fig. 10a shows a perspective view of the wireless charger in the second configuration; Fig. 10b shows a perspective view of the wireless charger a in the first configuration; and Fig. 10c shows a sectional side view of the wireless charger of Fig. 10a.DETAILED DESCRIPTION

[0045] In the following detailed description, reference is made to accompanying drawings which form a part of the detailed description. The illustrative embodiments described in the detailed description and depicted in the drawings are not intended to be limiting. Other embodiments may be utilised and other changes may be made without departing from the spirit or scope of the subject matter presented. It will be readily understood that the aspects of the present disclosure, as generally described herein and illustrated in the drawings can be arranged, substituted, combined, separated and designed in a wide variety of different configurations, all of which are contemplated in this disclosure.

[0046] The present disclosure relates to mounts for mounting mobile electronic devices including mounting arrangements including accessories that are designed to receive or be otherwise secured to the mobile electronic devices. The mobile device can be a mobile (cell) phone, a tablet computer, camera, etc. The mounts of the present disclosure are more specifically in a form that allows for wireless charging.

[0047] As exemplified in Fig. la, mounting arrangements for mobile electronic devices may for use in motor vehicles, bicycles, motor bikes, boats and the like where a secure connection is beneficial due to loading (vibration etc) induced on the mounting arrangement. Such mountings may also incorporate wireless charging for example in vehicle or motorcycle mounts. However, other mounting may be for wireless charging of the mobile devices in stationary mounts (e.g. for office or home) where the retention of the device is primarily for maintain alignment of the device on a charging surface for optimal charging rates.

[0048] In the present disclosure, the mounts are specifically directed to include wireless charging capability. As such, for ease of reference, such mounts are referred to as “chargers” or “wireless chargers” to indicate that capability. However, in those instances the “chargers” or “wireless chargers” still fall within the broader category of mounts and include a mounting arrangement as retention of the mobile device on the charger surface in a specific location is required to ensure optimal charging rates.

[0049] A feature of at least some forms of the disclosure is that a mechanical retention arrangement is provided as part of the mounting arrangement to mount the accessory to the charger. Such retention may supplement or complement other forms of retaining arrangements provided to retain the accessory to the mount, such as by virtue of magnetic engagement (such as provided by the MAGSAFE technology of Apple). Such mechanical arrangements may alsoallow for locking of the device to the charger surface such that unlocking of a mechanism is required to allow for disengagement of the components.

[0050] Where mechanical retention is provided between the mobile device and the charger, the component of the mounting associated with the mobile devices may be in the form of an accessory that is secured to the mobile device. In some forms, the accessory is in the form of a case which is arranged to receive the mobile electronic device. In other forms, the accessory may be in the form of an attachment which is secured to the mobile electronic device, by for example, via an adhesive or by a mechanical clamping arrangement. Such an attachment may be secured directly to the mobile electronic device or may be secured to a case secured to the mobile device.

[0051] Retention between the accessory and the mount may include a coupling which includes interfitting components. A locking arrangement includes a locking mechanism that locks the components when in the interfitting relationship may also be provided. In some forms, the interfitting components form part of the locking arrangement. In some forms, retention of the accessory to the mount (without locking) may be provided by forms other than mechanical interference. In some forms, that retention is by magnetic attraction (such as that provided MAGSAFE technology). In some forms, such magnetic retention may be directly between the mobile device and the charger.

[0052] In some forms, the interfitting arrangement of the coupling includes a recess formed in a rear wall of a body of the accessory that is arranged to receive a projecting portion of the charger body, herein referred to as a “mounting head”. The charger body may also include a base portion located behind the mounting head. The mounting head and base portion may be integrally formed as a unitary housing or may be formed as separate components. In some forms, the mounting head and base portion have a substantially continuous housing wall surface. Insome forms, the base portion may be wider than the head portion to form a shoulder region.

[0053] The locking mechanism may be included in or disposed on the accessory body and form a direct interference with the mount to directly prevent removal of the mount from the recess, or to prevent disengagement of existing retention features acting between the accessory and the mount. The locking elements may be in the form of tabs or lobes or combination thereof. The locking mechanism may also incorporate locking actuators (or triggers) that may be designed to instigate a locking action of the locking mechanism. The locking mechanism may also include release actuators to allow release of the locking elements. In some forms, these functions to instigate locking and to release locking may be provided by separate components within a locking mechanism. In other forms, these functions are provided by the same component s). In some forms, the trigger functions that instigate locking may be designed to occur on presenting the accessory onto the mount. Such an arrangement may provide “automatic” locking without requiring separate manual manipulation (such as rotation of the accessory on the mounting head) other than placing the accessory onto, or in close proximity to, the charger. In some forms, the accessory and mount head may be placed into interfitting relation (such as by rotation of the accessory on the mounting head) so that the accessory is retained on the mount head and the locking mechanism may automatically activate when the accessory and mount head is in that retained condition to instigate the locking function. The automatic locking may occur by virtue of a mechanical interaction between components of the locking mechanism and the charger or within components of the locking mechanism that “triggers” the movement of the locking mechanism to lock. In some forms, the triggering of the locking mechanism could be through interactions other than direct contact such as for example by virtue of a magnetic field being triggered.

[0054] In some forms, the accessory recess and interfitting components on the mounting head (referred to herein as “mounting”) may have formations (notches, lobes, keeper structures) which require precise alignment to allow the accessory to be presented onto the mount head. Also, these formations may be designed to allow more than one angular position of the accessory on the mount. Typically, at least two (usually four) positions are catered for. These can be referred to as portrait, landscape (and inverted portrait and inverted landscape).

[0055] To aid the alignment, aligning components may be provided within the accessory and the charger to guide the accessory into correct relative positioning with the charger. In some forms, these aligning components may be configured for mechanical interference (e.g. with guide ramp surfaces and / or dimensionally accurate spacings of the notches to receive the lobes within required tolerances). In some forms, the aligning arrangement is done through magnetic arrays located on the accessory (case 14) and the charger 10, for example as indicated by the alignment of magnets indicated at regions 32, 34 in Fig. lb. These aligning magnets 32 in the charger may be located in the base portion of the charger within extensions that project radially from the mounting head so as to be in opposing relation with the magnetic array component in the accessory which may surround the recess accessory. Through the positioning of the magnets in the arrays, the accessory is caused to self-align into one of preset positions (e.g. portrait, landscape, inverted portrait, inverted landscape) as the accessory is presented on mount. Such self-aligning improves the user experience and assists in the reliability of the connection between the accessory and the mount. The magnetic force to provide the alignment of the accessory and mount may also bias the mount into the recess of the accessory and to retain the accessory and mount when so located.

[0056] To provide for wireless charging a transmitting coil is disposed within the charger body behind a charging surface on the mounting head to interact witha receiving coil in the device. The transmitting coil may be disposed, at least partially, within the mounting head.

[0057] In some forms, the mechanical arrangement of retention and also, if included, the locking mechanism, are provided in a largely planar configuration disposed with the bounds of the depth of recess such that the mechanism does not impact significantly the thickness of the rear wall of the accessory. In some forms, the thickness of the rear wall including the locking mechanism is within the range of 2mm to 6mm, with a lesser thickness within the bounds of the recess.

[0058] In some forms, the retention and / or locking arrangement is disposed around the periphery of the rear wall such that the rear wall thickness within the bounds of the recess, i.e., at the base of the recess which separates the mobile device and a distal end of the projection of the mount which locates within the recess, may be 2mm or less. In this way this wall thickness, that may be 2mm or less, provides a spacing that allows the device and charger (transmitting coil) to be close together for improving wireless charging efficiency.

[0059] The maximum (i.e., overall / total) rear wall thickness outside the bounds of the recess may be up to around 5.5mm, such as around 5 mm, e.g. 4.7mm. Within this space the locking mechanism may be substantially contained.

[0060] In some forms, the charger allows for magnetic retention of the mobile device on the mounting head without requiring an accessory associated with the mobile device. In some forms, a magnetic element is provided which is locatable around, either partially or fully, the mounting head. The magnetic element may be compatible with MAGSAFE technology and provide both retention and correct alignment for charging.

[0061] In some forms, the charger is reconfigurable through relative movement of the magnetic element to the charger body so that a user has the option to select mechanical retention / locking via an accessory or magnetic retention without an accessory. Further in either configuration, high charging rates may be achieved as the mobile device is correctly aligned on the charging surface (via the magnetic array with mechanical or the magnetic element in magnetic retention) as the spacing between the transmitting coil and the receiving coil in the mobile device is within the optimal range (typically within 2mm). The magnetic element may be removably retained on charger body through the mounting on the mounting body or by other arrangements such as threaded, clips, press fit and / or magnetic retention or may be displaceable on the charger body.

[0062] . The mounting arrangement disclosed herein may provide an enhanced user experience. In some forms, in one configuration, a user may present the accessory (secured to the mobile electronic device) onto a charger and in a single motion, the accessory may self-align and on continued movement of accessory onto the mount head, the accessory is retained on the mount (for example by virtue of magnetic attraction). The accessory may then be automatically locked onto the mount (by virtue of triggering of the locking mechanism associated with the accessory). In some forms, visual feedback may be provided to confirm locking. In some forms, once retained and / or locked, efficient charging can occur between the charger and device through the accessory. Release actuator(s) may be arranged to provide a single user action that is intuitive to unlock the locking mechanism and enable the accessory to be released from the mount. In some forms, this enhanced user experience is provided in an accessory product (e.g. mobile (cell) phone case) having a rear wall thickness of less than 6 mm

[0063] In some forms, in a second configuration, the charger allows for the convenience of magnetic retention without requiring an accessory whilst still providing accurate alignment to enable high speed charging.

[0064] In some forms, when in the first configuration, the mounting head is exposed (i.e. presented) to allow for mounting of the accessory secured to the mobile electronic device. In some embodiments, in the second configuration, the magnetic element may be positioned for magnetically securing the mobile electronic device relative to the charger body and inhibit access to the mounting head.

[0065] Specific embodiments of wireless chargers as well as accessories and mounts for mountings mobile electronic devices are now disclosed with reference to the drawings. The illustrative embodiments described in the detailed description, depicted in the drawings and defined in the claims, are not intended to be limiting. For example, the following disclosures with reference to the drawings discloses various locking mechanisms and coupling components disclosed in relation to an accessory in the form of a mobile phone case. The disclosure is applicable to other form factors of accessory, including attachments which may be fixed to device cases, or directly to mobile devices.

[0066] According to an embodiment of Fig. 2a to 3db, a wireless charger 10 is disclosed in a first configuration, i.e., a first operative mode (best shown in Fig 2a) and in second configuration (best seen in Fig. 3a). The charger 10 comprises a body 12 which can deliver power to a mobile electronic device 13 through inductive charging. The body 12 includes a housing 16 and having a mounting head 36 at an upper end and a base portion 37 extending to a lower surface 22. In the illustrated form, the mounting head 36 and the base portion 37 are integrally formed with the base portion being demarcated by lateral extensions 39 that extend outwardly from the head portion 36. The lateral extensions 39 include magnetic array 32 that assist in locating an accessory onto the mounting head as explained in more detail below.

[0067] The mounting head 36 includes an upper surface 18 providing a charging surface 20. The base portion 37 includes an opposite lower surface 22 (Fig. 2b and 4c) that can include a recessed attachment region 24 allowing the charger 10 to be mounted to ancillary support arrangements 26. In the illustrated form shown in Fig. 2a, the charger body 12 is generally in the shape of a puck (with addition of the lateral extensions 39), with the mounting head 36 being generally circular in plan cross section. The charger body 12 may take other forms, such as polygonal profiles.

[0068] A transmitting coil 28 is disposed or otherwise housed within the charger body 12 and is located under the charging surface at least partially within the mounting head 36. The transmitting coil 28 is configured to generate a changing magnetic field which allows power transfer to a receiving coil ‘Rx’ disposed in the mobile device 13. Any suitable power source (not shown) may be used to provide power to the transmitting coil including any suitable cable connected to the base 12. In the illustrated form, a socket outlet 30 (e.g., in the form of a USB-C outlet) is provided in the base 12 to connect the base to a power source. Powering the transmitting coil creates the changing magnetic field and if a receiving coil is in a mobile electronic device, and is in sufficient proximity to the transmitting coil, then a current is created in the receiving coil which charges the device.

[0069] The mounting head 36 is arranged to interact with a mobile device accessory, which in the illustrated form in 2b is in the form of a mobile (cell) phone case 14 s to mechanically retain the case 14 to the wireless charger 10. Referring to Fig. 2b, where the charger 10 is shown spaced from the case 14, the case 14 includes a recess 38 in its rear surface 40 that may define one or more slots 41 contiguous with the recess 38. Referring again to Fig. 2a, the mounting head 36 may include one or more tabs 42 receivable by the one or more slots 41. When the one or more tabs 42 are received by and pass through the one or moreslots, the case 14 may be retained to the mounting head 36 interaction between the tabs and complementary components on the case.

[0070] The locking arrangement disclosed retains and locks the case to the mounting head on presentation of the case onto the mounting head. Other examples of retention arrangements require rotating of the case 14 relative to the charger 10.

[0071] Thus, with the connection of the mounting head 36 to the case 14, inductive charging can occur as set forth earlier. It is to be appreciated that the mechanical interlocking arrangement shown is for illustrative purposes only and may take other forms of mechanical coupling that may include inter-fitting components.

[0072] In some forms, the charger 10 can comprise the magnet array 32 arranged to be magnetically attracted to a metallic array 34 in the case 14 for the mobile device. The magnet array 32 in the charger 10 and the metallic array in the case 14 may, for example, assist with attracting and aligning the mounting head 36 of the charger into the recess 38 of the case 14. In some forms, through the positioning of the magnets 32, 34 in the arrays, the accessory is caused to selfalign into one of preset positions (e.g. portrait, landscape, inverted portrait, inverted landscape) as the case is presented on mounting head 36. The slots 41 and tabs 42 are also arranged to align with these preset positions so that the mounting head can be received in the recess 24. Such self-aligning improves the user experience and assists in the reliability of the connection between the accessory and the mount. The magnetic force to provide the alignment of the accessory and mount may also bias the mount into the recess of the accessory and to retain the accessory and mount when so located.

[0073] Referring now to Figs. 3a to 3d, the wireless charger 10 further comprise an attachment in the form of a magnetic element 44. In the embodiment of the magnetic element 44 shown in Figs 3a to 3d, the magnetic element 44 can be an annular ring comprising an opening 46 therethrough for locating with respect to, i.e., positioned around and interacting with, the mounting head 36. With the magnetic element 44 in position on the mounting head 36, the charger 10 can be reconfigured to adopt a second configuration, i.e., a second operative mode.

[0074] The magnetic element 44 can be configured to receive at least a portion of the mounting head 36 of the charger 10 through its opening 46 so as to locate the upper surface 18 of the charger 10 in at least substantial alignment with an upper surface 48 of the magnetic element 44. That is, the upper surfaces 18,48 of the respective components are flush, i.e., coplanar.

[0075] As shown in Fig. 3b, the opening 46 of the magnetic element 44 may comprise one or more slots 50 contiguous with an inner wall 52 of the opening 46. In other words, the slots 50 of the magnetic element 44 can be the same e.g., profile, size, etc., as those slots provided in the case recess 38, as set forth previously. In this regard, the slots 50 of the magnetic element 44 can receive the one or more tabs 42 of the mounting head 36. In some embodiments, as set forth in detail later, the tabs 42 can be utilised for alignment of the magnetic element 44 and the charger 10 magnetic array 32. That is, the tabs 42 can guide an orientation of the magnetic element 44 when locating the magnetic element onto the charger, in-use. In other embodiments, and as also set forth in more detail later, the tabs 42 may be additionally or alternatively configured to provide a mechanical interlock between the charger 10 and the magnetic element 44.

[0076] In one form, the magnetic element 44 may be magnetically attracted to the magnet array 32 of the charger 10. Advantageously, this can assist withalignment of the magnetic element 44, i.e., when guiding the magnetic element onto the charger body 12 of the charger 10. In other words, a magnetic attraction between the two components may assist with auto / self-alignment of the slots 50 and tabs 42 when locating the magnetic element 44 onto the charger 10.

[0077] Referring now to Fig. 2c and 2d, the magnetic element 44 can be arranged to interact, i.e., magnetically retain / engage with a mobile device 13. In some forms, the magnetic element 44 may also be configured to interact with the magnetic array in the case for the mobile device (as shown in Fig. 3d), even though when so located the transmitting coil of the charger 10 is further spaced from the mobile device as the mounting head 36 can no longer locate within the recess 24. As such charging rates may be reduced. However, when no case is provided (as shown in Fig3c) the spacing of the transmitting coil and the mobile device is not compromised.

[0078] This magnetic mounting can be used instead of the mechanical retention between the case and the mounting head 36, as set forth in relation to the first configuration of the charger. In this regard, if a case is still secured on a phone, the case for the mobile device may not comprise the recess 38 as set forth in relation to the first configuration. For example, the case may be a standard case 15 having a planar rear surface 40.

[0079] The magnetic element 44 may comprise a magnet array 54. The magnet array 54 may, for example, be in the form of a circular magnet array. Such magnetic arrays can be compatible with Apple’s MAGSAFE technology, which Apple Computer, Inc. (“Apple”) has developed magnetic technology for magnetically securing or otherwise mounting its mobile devices to accessory products.

[0080] In one form, the magnetic element 44 may be formed from a moulded polymer, e.g., TPE, whereby the magnet array 54 is located within the moulded polymer, e.g., by over-moulding process or by assembly therein.

[0081] The magnetic array 54 can be located within the magnetic element 44, i.e., relative to the upper surface 18, in such a way that, when the magnetic element 44 is located about the mounting head 36, the magnet array 54 of the magnetic element 44 and the transmitting coil 28 of the charger 10 are aligned coplanar.

[0082] When the charger 10 with the magnetic element 44 are magnetically mounted to a mobile device 13(see Fig. 2c), the upper surface 48 of the magnetic element 44 and the upper surface 18 of the charger 10 can be aligned such that the respective upper surfaces 48,18 are both in direct contact with the mobile device 13. Such an arrangement brings the transmitting coil 28 of the charger 10 into close proximity with the receiving coil Rx of the mobile device, thereby allowing for optimal charging rate conditions. Typically, this spacing is less than 2mm as required under the Qi2 Standards.

[0083] Referring again to Fig. 3d, when the charger 10 and magnetic element 44 are magnetically mounted to a case 15, the upper surface 48 of the magnetic element 44 and the upper surface 18 of the charger 10 can be aligned such that upper surface 48 of the magnetic element 44 contacts the rear surface 40 of the case 15.

[0084] In the second configuration, the magnetic element 44 allows for precision alignment of the mobile device relative to the charging surface 20. In other words, the magnetic array 54 of the magnetic element 44 locates the mobile device precisely so as to ensure proper alignment of the transmitting coils 28 and the receiving coils in the device. Further, the magnetic element 44 is coplanarwith the charging surface 20. With such an arrangement, the charger 10, when in the second configuration as set forth above, is able to meet the physical design requirements to comply with certain wireless charging standards, such as those in Qi2 Standard issued by the Wireless Power Consortium.

[0085] Advantageously, the incorporation of the separate magnetic element 44 to the charger body 12 allows a mobile device (i.e., by itself or via cases 14,15) to be mounted to the charger 10 in different configurations, i.e., either of the first or second configurations set forth above. For instance, when the mobile device 13 is provided in a case 14 (i.e., having a recess 38), it can be attached and mounted to the charger base 12 via the mounting head 36 (i.e., the first configuration). This can provide a robust connection point between the mobile device and the charger 10 that can limit movement of the mobile device during e.g., rough transit of a vehicle. Moreover, such a robust connection can prevent the mobile device from becoming misaligned with the charger during use.

[0086] Alternatively, the mobile device 13 without a case, or when provided in a case 15 (i.e., without a recess 38) can be attached and mounted to the charger body 12 via the magnetic element 44 (i.e., the second configuration). By mounting the magnetic element 44 onto the charger body 12, the mobile device may be placed directly on the charging surface 26. This may provide a user with quick access to the charger 10 in situations where the mobile device is not subject to e.g., vibrations, that may misalign the charger and mobile device. Further, in both configurations, the spacing between the transmitting coil 28 and the receiving coil Rx of the electronic device can be within preferred range (being in the order of 2mm).

[0087] Thus, the magnetic element 44 can allow the user to choose whether they magnetically mount or mechanically mount their mobile device to the charger 10.

[0088] In the first embodiment of the magnetic element 44 shown in Figs. 3a to dd, the magnetic element 44 can be arranged to interact with the mounting head 36 as set forth above. Additionally, the magnet element 44 can be releasably coupled with the mounting head 36 via a releasable coupling, i.e., configured to retain the magnetic element 44 relative to the charger body 12. In-use, once the one or more tabs 42 of the mounting head 36 are be received by and pass through the one or more slots 50 of the magnetic element 44, the magnetic element may be secured to the mounting head by relative rotation of the respective components.

[0089] This mechanical interlock is configured to allow the magnetic element 44 to be easily attached to the charger 10 and then easily removed when required by simply rotating the magnetic element 44 clockwise or counterclockwise (i.e., onto or from the charger 10). Advantageously, the mechanical interlock between the components prevents the magnetic element 44 from being pulled from the charger 10 when e.g., the case or mobile device is pulled away from the charger.

[0090] As set forth in more detail below, the magnetic element 44 can be arranged to interact with the mounting head 36 in other ways, such as other mechanical inter-fitting arrangements, by magnetic, or mechanical / electrical couplings.

[0091] Referring now to Figs. 4a to 4c, a second embodiment of the charger 210 is illustrated. For convenience, like features have been given like reference numerals with the addition of the prefix 2. In this embodiment, the magnetic element 244 is configured for coupling with the charger body 212 by magnetic attraction alone. That is, the second embodiment 244 differs from the first embodiment 44 in that the magnetic element 244 is not configured to mechanically interlock with the tabs 242 of the charger 210. Rather, the magnetic element 244 can simply locate around the charger body 212, as set forth previously, for being retained thereat by the magnetic attraction between themagnet arrays 232,254 of the charger 210 and the magnetic element 244. In this form, the magnetic attraction between the magnet arrays 232,254 of the charger 100 and the magnetic element 244 are stronger than that between the metallic array of the case 15 or the mobile device 13. This ensures that the mobile device 13 or its case 15 detach from the magnetic element 244 before the magnetic element 244 can be detached from the charger 200.

[0092] In the form shown in Figs. 4a to 4c, the magnetic element 244 comprises at least two opposing magnets 254 arranged to align with the magnetic array 232 of the charger 210. It should be appreciated that more magnets can be provided in the magnetic element and configured in other arrangements for optimising magnetic attraction between the two components.

[0093] Referring now to Figs. 5a to 5c, a third embodiment of the charger 310 is illustrated. For convenience, like features have been given like reference numerals with the addition of the prefix 3. In this embodiment, the magnetic element 344 is configured for coupling with the charger body 312 by a fastener 356. The magnetic element 344 in the third embodiment differs from the earlier embodiments 44, 244 in that the magnetic element 344 is configured to receive the fastener 356, e.g., a screw, through opposing apertures 358 located at a perimeter of the magnetic element 344. The screws 356 can then be received by, i.e., inserted into, corresponding threaded bores 360 of the charger 310 for securely retaining the magnetic element 344 thereat.

[0094] Referring now to Figs. 6a to 6c, a fourth embodiment of the charger 410 is illustrated. For convenience, like features have been given like reference numerals with the addition of the prefix 4. In this embodiment, the magnetic element 444 is configured for nesting the charger body 412 therewithin. The magnetic element of the fourth embodiment 444 differs from the earlier embodiments 44,244, 344 in that the magnetic element 444 comprises a cavity462 (see Fig. 5c), rather than an aperture, i.e., a ‘through-hole’. In this regard, when the charger 400 is nested within the cavity 462 of the magnetic element 444 in-use, the charger 400 cannot move through the magnetic element 444. Hence, in-use, when a case or mobile device is removed, i.e., pulled away, from its magnetic attachment to the magnetic element 444, a base 464 (see Fig. 5c) of the cavity 462 prevents the magnetic element 444 moving away from the charger body 412.

[0095] In some forms of the fourth embodiment, the charger body 412 can be weakly retained within the bore 462 of the magnetic element 444 to prevent the charger 400 from easily displacing therefrom. For example, a weak interference fit may be provided to stabilise the charger 410 within the cavity 462.

[0096] Referring now to Figs. 7a to 7c, a fifth embodiment of the charger 510 is illustrated. For convenience, like features have been given like reference numerals with the addition of the prefix 5. In this embodiment, the magnetic element 544 is configured for coupling with the charger body 512 by a hinge 566. The hinge 566 can be located at a perimeter of the magnetic element 544 such that the magnetic element 544 pivots thereat for allowing the magnetic element to move between a closed configuration (Fig. 6a), i.e., being located centrally around the charger body 512, and an open configuration (Figs. 6b), i.e., being pivoted away from the charger body 512.

[0097] Referring now to Figs. 8a to 8c, a sixth embodiment of the charger 610 is illustrated. For convenience, like features have been given like reference numerals with the addition of the prefix 6. In this embodiment, the magnetic element 644 is configured to be releasably coupled to the charger body 612 by a threaded coupling 668 (see Fig. 8c). As shown in Fig. 8c, the threaded coupling 668 includes a threaded wall 670 of the charger 610 configured for receipt by (i.e., within) a corresponding threaded wall 672 of the inner wall 652 of the magneticelement 644. This allows the magnetic element 644 to be easily attached to the charger 610 and then easily removed when required by simply screwing or unscrewing the magnetic element to or from the charger 610.

[0098] In the form shown in Fig. 8a and 8c, the magnetic element 644 can comprise ‘dead-stop’ portions 674, i.e., steps 674, formed in the inner wall 652 of the magnetic element 644. The steps 674 are configured to contact corresponding tabs 642 of the magnetic element 644 for stopping over-rotation of the charger 600 through the magnetic element 644. In the form shown, the steps 674 are arranged at the inner wall 652 to stop a rotation of the magnetic element 644 when the charging surface 620 is aligned with the upper surface 648 of the magnetic element 644.

[0099] Referring now to Figs. 9a to 9c, a seventh embodiment of the charger 710 is illustrated. For convenience, like features have been given like reference numerals with the addition of the prefix 7. In this embodiment, the magnetic element 744 is configured for ‘press-fitting’, i.e., ‘snap fitting’, onto the charger body 712. In this embodiment, the magnetic element 744 and the charger body 712 may comprise a respective protrusion 778 for releasably retaining the magnetic element 744 to the charger 700. In the form shown in Fig. 9b and 9c, the charger body 712 comprises a hemispherical protrusion 778 located at opposing points on the charger body 712. The protrusions 778 can be configured to correspond, i.e., in shape, size, etc, to opposing detents 780 located in an inner wall 752 of the magnetic element 744. It should be noted that the location of the detent and protrusion may be reversed, i.e., such that the magnetic element is provided with a protrusion and the charger is provided with the detent.

[0100] Assembly and removal of the magnetic element 744 from the charger body 712 can be achieved by simply press-fitting the protrusion and detent of thetwo components into ‘snap-engagement’, or pulling the components apart, away from said snap-engagement.

[0101] Referring now to Figs. 10a to 10c, an eight embodiment of the charger 810 is illustrated. For convenience, like features have been given like reference numerals with the addition of the prefix 8. In this embodiment, the magnetic element 844 can be displaceably retained at the charger body 812 and configured for magnetically or mechanically interlocking / interfitting with the charger 810. In other words, the magnetic element 844 and the charger 810 can be configured in either the first or second configurations set forth previously, without removing the magnetic element from the charger.

[0102] As best shown when comparing Figs. 10a and 10b, the magnetic element 844 can be mounted with respect to the charger body 812 and displaceable about a central axis A-A by a biasing element 882. In the form shown in Fig. 10c, the biasing element may be a spring 882, e.g., a compression spring that can be located between the magnetic element 844 and the charger 810 and configured to bias the magnetic element 844 into the second configuration, i.e., as shown in Fig. 10a.

[0103] When the magnetic element 844 is axially displaced e.g., depressed away from the second configuration into the first configuration (shown in Fig. 10b), the mounting head 836 including tabs 842 of the charger can be exposed. This exposure of the tabs 842 can allow an accessory to be interlocked with the mounting head 836 of the charger 800, as set forth in previously in relation to the first configuration.

[0104] Advantageously, the eighth embodiment of the magnetic element can allow a user to utilise the first or second configurations without manually attaching or removing the magnetic element 844 from the charger 810. Forexample, in situations where a mobile device does not have a case 14, or has a case 15 without a recess 38, the user may mount their mobile device 13 / case 15 to the charger 810 in the second configuration, i.e., by only magnetic attachment of their case or mobile device to the magnetic element 844 (without mechanical retention). As set forth earlier, such a mounting may be particularly useful when the mobile device is not subject to e.g., vibrations, that may misalign the charger and mobile device.

[0105] Alternatively, in situations where a mobile device is provided with a case 14, i.e., having a recess 38, the user may mount their mobile device 13 / case 14 to the charger 810 in the first configuration, i.e., by mechanical retention of the case 14 to the mounting head 836. As set forth earlier, such a mounting may be particularly useful in a situation where a robust connection point between the mobile device and the charger is required. When mounting the case 14 to the eighth embodiment of the magnetic element, a user may first locate their case 14 onto the magnetic element 844. Then, the user may depress their case or mobile device into the charger to displace the magnetic element 844 into the first configuration (as shown in Fig. 9b). The user may then rotate their mobile device and case 14 to secure the case to the charger 800, as set forth previously or a locking mechanism may be provided to automatically mechanically retain the case 14 to the mounting head 836.

[0106] As previously referred to, the charger (in any form described above) may be arranged in the first configuration to interact with a locking mechanism in an accessory to allow for retention and locking when the mounting head is received within the recess of the accessory. Such locking mechanisms are the subject of co-pending international application PCT / AU2025 / 051042 by the applicant entitled MOBILE ELECRONIC DEVICE MOUNTING, the contents of which are herein incorporated by cross reference in its entirety.

[0107] The referenced international application discloses a family of mechanical locking mechanisms integrated into an accessory configured to retain and lock a mobile electronic device to a charger or other mount, while maintaining precise positional alignment required for efficient wireless charging. The accessory may be a protective case having a rear wall with a coupling recess that opens outwardly and is bounded by a coupling surface with interfitting components such as notches, lobes. The recess receives a complementary mounting head presented by the charger, the mounting head including outwardly projecting mounting components such as tabs, keeper portions that align with the notches to establish repeatable angular orientations such as portrait, landscape, and their inverted counterparts.

[0108] Within the accessory, a compact locking mechanism is housed around the perimeter of the recess and may operate substantially in the plane of the rear wall so as not to unduly increase the wall thickness or the stand-off to the charger’s transmitting coil. In some embodiments, the locking mechanism may incorporate two laterally translating release actuators and four laterally translating locking tabs, arranged in opposed pairs about the coupling axis. Rotary link elements couple actuator motion to tab motion and are configured with unequal flange lengths to establish a displacement ratio: the actuators move through a larger, user-friendly travel while the tabs move through a smaller but sufficient travel to engage or disengage the tabs / keeper portions. Compression springs may bias the tabs toward the locked condition. In a mounting condition, the actuators may latch inboard via flexible clips that engage peripheries of actuator openings in the coupling surface, holding the tabs retracted. When the accessory is presented onto the mounting head, ramped edges of the actuator driving ends are contacted and deflected, releasing the clips; the actuators translate outward under spring bias, the link elements rotate, and the tabs are driven inwards so their locking ends follow the circular perimeter of the recess and engage the tab / keeper portions to prevent rotation and axial withdrawal.

[0109] User release is effected by depressing buttons of the release actuators at the perimeter walls of the accessory, which translate the actuators inward, rotate the link elements, and retract the tabs from the keeper portions, permitting removal. The outward movement of the buttons in the locked state provides clear visual and tactile feedback; in the mounting state, the buttons are substantially concealed to avoid snagging or unintended actuation. Magnetic arrays in the accessory and the mounting head may be included to assist auto-alignment and to draw the mounting head into the recess, complementing the mechanical lock.

[0110] The mechanisms are scalable and adaptable. Tab count, actuator count, and link ratios can be tuned to balance user ergonomics with housing constraints. Slots, openings, and grooves are dimensioned to guide motion and to provide consistent latching forces. Materials and coatings are selected for low wear, dimensional stability, and electromagnetic compatibility. Collectively, the embodiments provide automatic, positive locking upon presentation, robust retention under vibration, rapid one-handed release, and maintenance of the geometric and alignment tolerances required for high-efficiency inductive charging through the accessory.

[0111] Variations and modifications may be made to the parts previously described without departing from the spirit or ambit of the disclosure.

[0112] For example, the body of the wireless charger could be modified to include a charging surface but no mounting head 36. In such arrangements, the wireless charger may merely include a removable / displaceable magnetic element that is used to mount the mobile electronic device to the charger, and once removed, to allow the magnetic element to be fixed to another surface, such as a fridge or the like, to be used for mounting the mobile electronic device thereto.

[0113] Further, whilst in the form shown the mobile electronic device may be a mobile phone, the mobile electronic device can take other forms including tablet devices or wearable devices such as smart watches or smart rings or any other mobile electronic device. The mobile device may also be in the form of ear buds which commonly include a case for both storage and to enable charging.

[0114] It should also be understood that reference to a mobile electronic device includes a reference to such a device being received in a case (for example case 14) for protective and / or mounting purposes.

[0115] In the claims which follow and in the preceding description of the invention, except where the context requires otherwise due to express language or necessary implication, the word “comprise” or variations such as “comprises” or “comprising” is used in an inclusive sense, i.e. to specify the presence of the stated features but not to preclude the presence or addition of further features in various embodiments of the invention.

Claims

Claims1. A wireless charger for wirelessly charging a mobile electronic device having a receiving coil comprising:a charger body comprising a mounting head having a charging surface and a mounting configured to form part of a mechanical coupling to retain an accessory associated with the mobile electronic device to the charger body when the mounting head is received within a recess in the accessory,a transmitting coil disposed within the body in close proximity to the charging surface; anda magnetic element configured to locate at least partially around the mounting head for use in magnetically retaining the mobile electronic device rel tive to the mounting head,wherein at least one of the mounting head and the magnetic element is movable relative to the other to enable the charger to adopt a plurality of configurations to enable a user to select a first configuration of the charger where the mounting head is exposed to allow the mounting head to be received in the recess of the accessory' for mechanical coupling or a second configuration where the magnetic element is disposed at the mounting head for retaining the mobile electronic device to the mounting head by the magnetic element.

2. A wireless charger according to claim 1, wherein in the second configuration, the magnetic element is positioned substantially flush with the charging surface.

3. The wireless charger according to claim 1 or 2, wherein the charger body further comprises a base portion having one or more lateral extensions extending outwardly from the mounting head and housing a magnet array configured to assist alignment of the accessory onto the mounting head.

4. The wireless charger according to claim 3, wherein the magnet array of the base portion and magnets of the magnetic element are arranged to magnetically attract for alignment of the magnetic element relative to the charger body in the second configuration.

5. The wireless charger according to any preceding claim, wherein the magnetic element defines an opening sized to receive at least a portion of the mounting head and comprises one or more slots contiguous with an inner wall of the opening for alignment and interlock with the mounting on the mounting head.

6. The wireless charger according to claim 5, wherein the magnetic element is releasably secured to the mounting head by relative rotation following receipt of the mounting in the slots.

7. The wireless charger according to any preceding claim, wherein the transmitting coil is disposed at least partially within the mounting head in close proximity to the charging surface.

8. The wireless charger according to any preceding claim, wherein the mounting comprises outwardly projecting tabs receivable by slots formed contiguous with a recess in a rear surface of the accessory.

9. A wireless charger for wirelessly charging a mobile electronic device having a receiving coil comprising:a charger body comprising a charging surface,a transmitting coil disposed within the body in close proximity to the charging surface; anda magnetic element configured to locate at least partially around the charger body for use in magnetically retaining the mobile electronic device relative to the charger body,wherein the magnetic element is releasably retained on the charger body.

10. A wireless charger according to claim 9, wherein the magnetic element is located substantially flush with the charging surface.

11. A wireless charger according to any one of claims 1 to 8, wherein the magnetic element is mounted to the charger body through a retaining mechanism that retains the magnetic element to the charger body in both the first and second configurations.

12. A wireless charger according to claim 11, wherein the retaining mechanism comprises a hinged connection.

13. A wireless charger according to claim 11, wherein the magnetic element is captured on the charger body through the retaining mechanism and capable of relative axial displacement between the first and second configuration.

14. The wireless charger according to claim 13, further comprising a compression spring located between the magnetic element and the charger body configured to bias the magnetic element to the second configuration.

15. A wireless charger according to any one of claims 1 to 10, wherein the magnetic element is mounted to charger body, and the charger further comprises a releasable coupling that retains the magnetic element relative to the charger body.

16. A wireless charger according to claim 15, wherein the magnetic element is removable from charger body.

17. A wireless charger according to claim 15 or 16, wherein the releasable coupling is any one of mechanical fasteners, or a threaded, mechanically interfitting, snap fit, magnetic or interference coupling.

18. A wireless charger according to any preceding claim, wherein the magnetic element is in the form of a circular magnetic array that surrounds charger body.

19. The wireless charger according to any preceding claim, wherein the charger being configured to supply electrical energy to the transmitting coil for charging the mobile electronic device when positioned in close proximity to the charging surface.

20. The wireless charger according to any preceding claim, wherein the charger body comprises a lower surface having an attachment region configured to receive ancillary support arrangements.

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