Patent Description:
To remove the need for charging batteries in a hearing device, hearing devices are designed to be rechargeable. As such, hearing devices are often equipped with rechargeable batteries that can be recharged in a hearing device charger, while the batteries are still in the hearing device. To charge the hearing device, the hearing device is inserted into an insert cavity of the hearing device charger. For effective charging of the hearing device, the hearing device is held in a charging position in the hearing device charger, such that the receiver charging element in the hearing device is placed close to the transmitter charging element in the charger. Examples of hearing device chargers can be found in e.g. <CIT>, <CIT>, <CIT> and <CIT>.

A problem with the solutions of the prior art is that each hearing aid charger for this reason only supports hearing aids having a specific form factor, i.e. specific outer dimensions. This result in a great number of chargers on the market to support charging of e.g. different generations of hearing aids or that the hearing aid manufacture is locked to a specific outer design in order to supply hearing aids usable with current chargers on the market. A further problem with the solution of the prior art is that the charger manufacturer has to store spare parts and support repairs of many different hearing device chargers.

There is thus a need for an improved hearing aid charger design, which can be easily adapted to support hearing aids with different outer dimensions, such as hearing devices of different shapes and sizes, and provides effective charging.

It is an object of the present disclosure to mitigate, alleviate or eliminate one or more of the above-identified deficiencies and disadvantages in the prior art and solve at least the above-mentioned problem.

In one aspect, one or more of the above objects are achieved by means of a charging kit or assembly to charge hearing devices, as claimed in the associated independent claim, preferred variants thereof being defined in associated dependent claims.

According to a first aspect there is provided a charging kit for charging one or more rechargeable hearing devices, the hearing device being configured to be worn by a user, the charging kit comprising a base charger and a first model specific insert for a first model specific hearing device of the one or more hearing devices, the base charger being configured to receive a first model specific insert, the base charger comprising a transmitter charging element, where the first model specific insert is adapted to removably receive at least a first model specific hearing device of the one or more hearing devices, the first model specific hearing device comprising a first receiver charging element, characterized in that the transmitter charging element is arranged in the base charger on an adjustable support being configured to provide an adaptable positioning of the transmitter charging element, whereby the transmitter charging element is configured to be urged (or biased) towards the first model specific insert when the first model specific insert is placed in (and/or inserted into) the base charger thereby enabling energy to be transferrable from the transmitter charging element to the first receiver charging element of the first model specific hearing device when placed in the first model specific insert.

According to some embodiments, the base charger is configured to receive a second model specific insert, where the second model specific insert is adapted to removably receive at least a second model specific hearing device of the one or more hearing devices, the second model specific hearing device comprising a second receiver charging element, and wherein the adjustable support of the transmitter charging element is adapted to provide the adaptable positioning of the transmitter charging element, so that the transmitter charging element is configured to be urged (or biased) towards the second model specific insert when the second model specific insert is placed in (and/or inserted into) the base charger enabling energy to be transferrable from the transmitter charging element to the second receiver charging element of the second model specific hearing device when the second model specific hearing device is placed in the second model specific insert.

According to some embodiments, the base charger comprises a cavity configured to mate with the first model specific insert and/or the second model specific insert, and/or each model specific insert comprises at least one model specific insert cavity configured to mate with the first or second model specific hearing device, respectively.

According to some embodiments, the first and/or second model specific insert or each of the first and/or second model specific insert comprises two model specific insert cavities of which each model specific insert cavity is configured to mate with one of a pair of the first model specific hearing devices or to mate with one of a pair of the second model specific hearing devices.

According to some embodiments, at least one of the first model specific hearing devices and/or at least one of the second model specific hearing devices is configured for wireless charging. Wireless charging may be obtained by means of inductive coupling, capacitive coupling, magnetic coupling, radio frequencies, light waves and/or sound waves, etc. In case the wireless charging is obtained by means of inductive coupling, the transmitter charging element(s) may be one or more transmitter coils and the receiver charging element(s) may be one or more receiver coils, such as respectively one or more inductive transmitter coils and one or more inductive receiver coils.

According to some embodiments, one or more or all of the first and/or the second model specific hearing devices is/are inductively chargeable.

According to some embodiments, the base charger comprises a cavity configured to mate with the first model specific insert and/or a/the second model specific insert, and the transmitter charging element is arranged to be positioned at a start (or base) position in the cavity of the base charger before the first model specific insert is placed in the base charger, and the transmitter charging element is configured to be displaced to a first position by the first model specific insert and to act with a bias or urging force towards the first model specific insert when the first model specific insert is placed in (and/or inserted into) the base charger, the first position being different from the start (or base) position.

According to some embodiments, the transmitter charging element is configured to be displaced to the first position to align with the first receiver charging element of the first model specific hearing device, when the first model specific hearing device is placed in the first model specific insert in the base charger, and to act with a bias or urging force towards the first model specific insert and the first receiver charging element of the first model specific hearing device.

According to some embodiments, the base charger comprises a cavity configured to mate with the first model specific insert and/or a/the second model specific insert, and the transmitter charging element is arranged to be positioned at the start (or base) position in the cavity of the base charger before the second model specific insert is placed in the base charger, and the transmitter charging element is configured to be displaced to a second position by the second model specific insert and to act with a bias or urging force towards the second model specific insert when the second model specific insert is placed in the base charger, the second position being different from the start (or base) position.

According to some embodiments, the transmitter charging element is configured to be displaced to the second position to align with the second receiver charging element of the second model specific hearing device, when the second model specific hearing device is placed in the second model specific insert in the base charger, and to act with a bias or urging force towards the second model specific insert and the second receiver charging element of the second model specific hearing device.

According to some embodiments, the first distance between the start (or base) position and the first position is shorter, equal to or longer than the second distance between the start (or base) position and the second position.

According to some embodiments, the adjustable support comprises an elastic element configured to make the transmitter charging element of the base charger movable between different positions in the base charger and able to act with a bias or urging force towards or against or into contact with the first model specific insert or the second model specific insert when the first or second model specific insert is placed in the base charger.

According to some embodiments, the elastic element of the adjustable support make the transmitter charging element of the base charger movable between different positions in the base charger, when the first or second model specific hearing device is placed in the first or second model specific insert in the base charger, and able to act with a bias or urging force towards or against or into contact with the first receiver charging element of the first model specific hearing device, when the first model specific hearing device is placed in the first model specific insert in the base charger, and able to act with a bias or urging force towards or against or into contact with the second receiver charging element of the second model specific hearing device, when the second model specific hearing device is placed in the second model specific insert in the base charger.

According to some embodiments, the base charger comprises a cavity configured to mate with the first model specific insert and/or a/the second model specific insert, and the adjustable support comprises an elongated body with a first free end and a second end opposite the first free end, whereby the transmitter charging element is arranged on the first free end of the adjustable support and the second end of the adjustable support is attached or connected to a guide or attachment point in the base charger, and the first free end of the adjustable support is arranged movable/displaceable in the cavity of the base charger.

According to some embodiments, the elongated body of the adjustable support comprises or is the elastic element.

According to some embodiments, the adjustable support comprises an elastic element arranged at least partly between the first free end and the second end to exert a push force urging the first free end of the adjustable support and/or the transmitter charging element inside the base charger in a direction being substantially perpendicular or perpendicular to the direction of insertion of the first model specific insert and/or the second model specific insert.

According to some embodiments, the adjustable support comprises an elastic element arranged at least partly between the first free end and the second end to exert a push force urging the first free end of the adjustable support and/or the transmitter charging element inside the base charger in a direction being inclined or substantially in parallel with or in parallel with the direction of insertion of the first model specific insert and/or the second model specific insert.

According to some embodiments, the base charger comprises one or more insert receiving cavities, whereby the first free end of the adjustable support and/or the transmitter charging element are/is arranged at least partly in or fully outside the insert receiving cavities of the base charger.

According to some embodiments, the base charger comprises one or more insert receiving cavities in which the model specific inserts with the model specific insert cavities are received, whereby the first free end of the adjustable support and/or the transmitter charging element are/is arranged at least partly in or fully outside the model specific insert cavities.

According to some embodiments, the base charger comprises one or more insert receiving cavities in which the model specific inserts with the model specific insert cavities are received, whereby the first free end of the adjustable support and/or the transmitter charging element are/is arranged at least partly in or fully outside the model specific insert cavities and the insert receiving cavities of the base charger.

According to some embodiments, each of the model specific insert cavities of the first or second model specific inserts is defined by an insert cavity wall and wherein each insert cavity comprises one or more through holes, wherein the first free end of the adjustable support and/or the transmitter charging element are/is arranged at least partly in one or more of the through holes when one of the first and/or second model specific inserts is placed in the base charger.

According to some embodiments, the elastic element of the adjustable support is arranged at least partly restrained between the first free end and the second end to be pre-tensioned to exert the bias or urging force.

According to some embodiments, the elastic element is configured to extend along the elongated body of the adjustable support and to enclose or encompass or surround or cover at least a part of the outer surface of the elongated body of the adjustable support.

According to some embodiments, the elastic element comprises at least one helical spring or at least one leaf spring or the elastic element is made up of at least one helical spring or at least one leaf spring.

According to some embodiments, the elastic element comprises or is made up of at least two leaf springs arranged in a sandwiched or laminated manner.

According to some embodiments, the elastic element is made of metal or plastic or any combination of those materials.

According to some embodiments, the helical or leaf spring of the elastic element is made of metal or plastic or any combination of those materials.

According to some embodiments, the first free end of the adjustable support comprising the transmitter charging element is a hinged or pivotable part of the elongated body of the adjustable support.

According to some embodiments, the transmitter charging element is connected to the first free end of the adjustable support via a pivot or hinge.

According to some embodiments, the adjustable support comprises a protruding member or arm or lever arranged between the first free end and the second end, the protruding member being configured to be engaged by any of the first or second model specific insert when any of the first or second model specific insert is introduced into the base charger, whereby the first free end and the transmitter charging element is urged (or bias) towards the model specific insert.

According to some embodiments, the second end of the adjustable support is pivotally attached to the frame of the base charger via a torsion hinge.

According to some embodiments, the adjustable support comprises a compressible element arranged at least partly between the first free end and the transmitter charging element to provide a flexibility and/or a tolerance adaptability and/or to exert a bias or urging force urging the first free end of the adjustable support and/or the transmitter charging element away from each other and/or towards the first or second model specific insert, when the first or second model specific insert is placed in the base charger, in a direction being substantially perpendicular or perpendicular to the direction of insertion of the first model specific insert and/or the second model specific insert. Alternatively, the direction may be substantially in parallel with or in parallel with or inclined to the direction of insertion of the first model specific insert and/or the second model specific insert.

The charging kit or assembly is defined herein as a hearing device charger comprising at least a base charger and a hearing device model specific insert without a hearing device, i.e. when no hearing device is placed in the associated hearing device model specific insert of the hearing device charger. The base charger of the hearing device charger could be defined as a base charging station. When one or more hearing devices are placed in the associated hearing device model specific insert of the hearing device charger, the charging kit or assembly, i.e. the hearing device charger also comprises the hearing device as any charging of the hearing device is not possible to perform before placing a hearing device in the hearing device charger. The hearing device or pair of hearing devices may be embodied in various housing styles or form factors for example as so-called Behind-the-ear (BTE) hearing device, Receiver-in-the-ear (RIE) hearing device, Receiver-in-the Canal (RIC) hearing device, Microphone-and-Receiver-in ear (M&RIE) hearing device. The hearing device or pair of hearing devices may preferably comprise at least a signal processor configured to compensate for the users hearing loss.

The above described solution(s) disclose(s) a hearing device charger based on a product platform comprising a base charger useable with a number of different hearing device model specific inserts. This removes the need of development of a new hearing aid charger every time the outer dimensions on a new type or generation of hearing aids is different from the existing ones. To support charging of a new hearing aid with different outer dimension by means of the same base charger only a new model specific insert is needed therein.

The disclosed solution(s) enable(s) dislocating of the transmitter charging element in a hearing device charger dependent on which hearing device model specific insert is placed in the charger. The disclosed solution(s) provide(s) hearing device chargers with e.g. two, three, four or even up to ten or more different hearing device model specific inserts, each model specific insert being suitable for holding an associated type or model or group of models of hearing devices due to differing specific outer dimension, such as size and/or shape, for each hearing device.

The disclosed solution(s) ensure(s) that the distance between and the positions of the transmitter charging element in the hearing device charger and the receiver charging element in any of the different hearing devices is optimal to provide effective charging when placed in the model specific insert inside the hearing device charger as the transmitter charging element is movable in the hearing device charger to adapt its placement to the shape and size of the selected model specific hearing device insert and associated hearing device.

Hereby is provided a hearing device charger both being able to support hearing aids with different outer dimensions and to provide effective charging.

A further advantage is that the disclosed solution(s) provide(s) enable(s) keeping/maintaining the symmetry for different hearing device model specific inserts when placed in one or in the same or in one and the same or in a common hearing device charger.

Yet a further advantage is that the base charger may be returned to the manufacturing site and reused multiple times by exchanging one model specific insert with another. Another advantage is that the base charger may be refurbished multiple times by being adapted to different model specific hearing devices with model specific inserts, such as when introducing a new generation of hearing aids to the market. This enables exchange of the housing and other outer/user accessible parts of the base charger as well due to health regulations.

The model specific insert is preferably mounted in the charger during the assembly of the hearing device charger at the manufacturing site.

A model specific hearing device may be part of a hearing device family, wherein all model specific hearing devices in the hearing device family are configured to be used with/fit in the same hearing device model specific insert.

The present disclosure will become apparent from the detailed description given below. The detailed description and specific examples disclose preferred embodiments of the disclosure by way of illustration only. Those skilled in the art understand from guidance in the detailed description that changes and modifications may be made within the scope of the disclosure.

It should be noted that, as used in the specification and appended claim, the articles "a", "an", "the", and "said" are intended to mean that there are one or more of the elements unless the context explicitly dictates otherwise. Furthermore, words like "comprising", "including", "containing" and similar wordings does not exclude other elements or steps. Moreover, reference to a first or a second model specific insert also mean referring to a first model specific insert already assembled in the base charger, which first model specific insert is replaced by another model specific insert being for example a third or fourth or fifth model specific insert as the base charger is adapted to receive different types of model specific inserts, i.e. one different model specific insert at a time. These different types of model specific inserts that the base charger is configured to receive could e.g. be a first type of model specific insert or a second type of model specific insert or a third type of model specific insert or a fourth type of model specific insert, i.e. any suitable n:th type of model specific insert.

The present invention relates to different aspects including the system/kit/assembly described above and in the following, and corresponding system parts, methods, devices, systems, kits, uses and/or product means, each yielding one or more of the benefits and advantages described in connection with the first mentioned aspect, and each having one or more embodiments corresponding to the embodiments described in connection with the first mentioned aspect and/or disclosed in the appended claims.

The present disclosure will now be described with reference to the accompanying drawings 1A to <NUM>, in which preferred example embodiments of the disclosure are shown. The disclosure may, however, be embodied in other forms and should not be construed as limited to the herein disclosed embodiments/examples. An aspect or an advantage described in conjunction with a particular embodiment is not necessarily limited to that embodiment and can be practiced in any other embodiment/-s even if not so illustrated, or if not so explicitly described.

<FIG> show a first aspect of this disclosure being a charging kit or assembly <NUM>, i.e. a hearing device charger, for charging one or more rechargeable hearing devices <NUM>, <NUM>. The hearing devices could be one or a first hearing device <NUM> as in <FIG>, <FIG> and <FIG> (shown before insertion of a second hearing device or before removing a first one already in the charging kit <NUM>) and/or a first pair <NUM> of hearing devices as in <FIG>, <FIG> and <FIG> (shown after insertion of two hearing devices or before removing one or both from the charging kit <NUM>). The hearing devices could be another or a second hearing device <NUM> and/or a second pair <NUM> of hearing devices. The hearing devices could be a first hearing device <NUM> and/or a first pair <NUM> of hearing devices and/or a second hearing device <NUM> and/or a second pair <NUM> of hearing devices. In some embodiments, the first hearing device <NUM> is different from the second hearing device <NUM>. In some embodiments, the first pair of hearing devices <NUM> is different from the second pair of hearing devices <NUM>. In some embodiments, the first pair of hearing devices <NUM> comprises hearing devices that are different from each other. In some embodiments, the second pair of hearing devices <NUM> comprises hearing devices that are different from each other. In some embodiments, the first hearing device <NUM> and/or first pair of hearing devices <NUM> is different from the second hearing device <NUM> and/or the second pair of hearing devices <NUM>. The differences between hearing devices <NUM>, <NUM> could be in size, shape, color, texture, functionality and/or type/model/generation, e.g. for adults or children.

The hearing device(s) <NUM>, <NUM> is/are configured to be worn by a user. The hearing devices <NUM>, <NUM> may comprise a processing unit configured to compensate for a hearing loss of the user of the hearing devices. The charging kit <NUM> comprises a base charger <NUM> configured to receive one or more model specific inserts <NUM>, <NUM>. In some embodiments, the base charger <NUM> comprises one or more transmitter charging elements <NUM>. One or each hearing device <NUM>, <NUM> comprises a BTE housing <NUM>, <NUM> configured for placement behind the user's left or right ear, and at least one rechargeable battery <NUM>, <NUM> for powering the hearing device <NUM>, <NUM>. One or each hearing device <NUM>, <NUM> may further comprise a hook or an ear plug <NUM>, <NUM> configured for placement at least partly inside the user's left or right ear canal. <FIG>, <FIG>, <FIG>, <FIG> show an ear plug <NUM>, <NUM> comprising a receiver module. <FIG> shows an ear plug <NUM>, <NUM> comprising a receiver module and a dome attached to a free end of the receiver module. In some embodiments, the base charger <NUM> comprises one or more transmitter charging elements <NUM> for each hearing device <NUM>, <NUM>. Each model specific insert <NUM>, <NUM> is adapted to removable receive at least one model specific hearing device <NUM>, <NUM>, i.e. adapted to removably receive the BTE housing <NUM>, <NUM> of the model specific hearing device <NUM>, <NUM>. In some embodiments, each model specific insert <NUM>, <NUM> is adapted to removable receive two or a pair of model specific hearing devices <NUM>, <NUM>, i.e. adapted to removably receive the BTE housing <NUM>, <NUM> of the two or pair of model specific hearing devices <NUM>, <NUM>. A model specific hearing device <NUM>, <NUM> comprises at least one receiver charging element <NUM>, <NUM>. In some embodiments, each model specific hearing device <NUM>, <NUM> comprises at least one receiver charging element <NUM>, <NUM>. The transmitter charging element(s) <NUM> is/are configured to charge the hearing device(s) <NUM>, <NUM> via the receiver charging element(s) <NUM>, <NUM>. The base charger <NUM> comprises at least one cavity <NUM>, an attachment <NUM> for holding a model specific insert <NUM>, <NUM>, a charger housing and a frame <NUM>, 16B that could be partly exposed or be arranged fully and non-exposed inside the charger housing of the base charger, see <FIG>, <FIG>, <FIG>, and <FIG> and <FIG>. The charger housing may comprise a top/upper surface or housing <NUM>, and a bottom/lower surface or housing <NUM>, see <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>. In <FIG> and <FIG> to 3B, each of the model specific hearing device(s) <NUM>, <NUM> comprises at least one BTE housing <NUM>, <NUM> and at least one hook or ear plug <NUM>, <NUM>. The first hearing device(s) <NUM> comprises a first BTE housing <NUM> and a hook or ear plug <NUM>, see <FIG> and <FIG>. The second hearing device(s) <NUM> comprises a second BTE housing <NUM> and a hook or ear plug <NUM>, see <FIG> and <FIG>. Each ear plug <NUM>, <NUM> may be connected to a BTE housing <NUM>, <NUM> via a tube and/or wire, see <FIG> and <FIG>. The ear plug <NUM>, <NUM> may be connected to the BTE housing <NUM>, <NUM> via the tube and/or wire at one end, see <FIG> and <FIG>, and the ear plug may be connected to a dome at the other end, see <FIG>.

The transmitter charging element(s) <NUM> is/are arranged in the base charger <NUM> on an adjustable support <NUM> being configured to provide an adaptable positioning of the transmitter charging element, see <FIG> and <FIG>. The transmitter charging element(s) <NUM> may be supported by a support plate 11A. The support plate 11A may be made from a hard and/or brittle material. The support plate 11A may be made from ferrite. The transmitter charging element <NUM> of the base charger <NUM> in the hearing device charger <NUM> is configured to be urged/bias towards a first model specific insert <NUM> when the first model specific insert is placed in and/or inserted into the base charger <NUM>. This enables energy to be transferrable from the transmitter charging element(s) <NUM> to the first receiver charging element(s) <NUM> of the first model specific hearing device <NUM> when the first model specific hearing devise, e.g. the BTE housing <NUM> of the first model specific hearing device, is placed in the first model specific insert <NUM> of the hearing device charger <NUM>.

In some embodiments, the same goes for a second model specific insert <NUM> in that the adjustable support(s) <NUM> of the transmitter charging element(s) <NUM> in the base charger <NUM> of the hearing device charger <NUM> is/are adapted to provide the adaptable positioning of the transmitter charging element(s), see <FIG> and <FIG>. The transmitter charging element <NUM> is configured to be urged/biased towards a second model specific insert <NUM> when the second model specific insert is placed in and/or inserted into the base charger <NUM>. As above, this enables energy to be transferrable from the transmitter charging element(s) <NUM> to the second receiver charging element(s) <NUM> of the second model specific hearing device <NUM> when the second model specific hearing device, e.g. the BTE housing <NUM> of the second model specific hearing device, is placed in the second model specific insert <NUM> of the hearing device charger <NUM>.

In some embodiments, the transmitter charging element(s) <NUM> is/are configured to be urged/biased or moved by being pushed and/or pulled in direction(s) towards the receiver charging element(s) <NUM>, <NUM> of the model specific hearing device(s) <NUM>, <NUM> for adapting to its/their different shape(s) and size(s) etc., see <FIG> and <FIG>. This is done for pressing the transmitter and receiver charging element(s) <NUM>, <NUM>, <NUM> with sufficient force towards each other to ensure correct distance(s) between them that provide secure and effective/reliable charging. In some embodiments, the charging element(s) <NUM>, <NUM>, <NUM> or at least the transmitter charging element(s) <NUM>, press/-es towards the associated model specific insert(s) <NUM>, <NUM> or each other while not being in physical contact with each other. In some embodiments, the charging element(s) <NUM>, <NUM>, <NUM> press/-es against and in physical contact with the associated model specific insert(s) <NUM>, <NUM> and/or each other. These directions, reference D, of urging and/or biasing and/or moving and/or pushing and/or pulling between different positions P, P<NUM>, and P<NUM> are visualized by dotted/solid lines and arrows and the different distances between these positions are referenced as d<NUM> and d<NUM> in <FIG>, and as D, P, P<NUM>, and P<NUM> in e.g. <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, and <FIG>. In <FIG>, the urging or biasing or movement of the transmitter element <NUM> to adapt to different model specific inserts <NUM>, <NUM> (not shown) and hearing devices <NUM>, <NUM> (not shown) is done in such small scale by use of a compressible element(s) <NUM> of the adjustable support(s) <NUM>, such as rubber or foam in the form of a plate(s)/pad(s), e.g. made of Poron®, that no arrow visualises those small movements and changing distances and positions P, P<NUM>, and P<NUM> for the transmitter charging element(s) <NUM>. In this embodiment, the adjustable support(s) <NUM> may be the compressible element(s) <NUM>. In <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, a vertical arrow in solid lines pointing down visualizes the movement of a model specific insert <NUM>, <NUM> when inserted into or removed out in the opposite direction from the base charger <NUM>. <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG> show the model specific insert(s) <NUM>, <NUM> when inserted, i.e. when received and/or assembled in the base charger <NUM> to form the hearing device charger <NUM>, this movement is principally applicable to all figs. /embodiments when inserting or removing a model specific insert <NUM>, <NUM>.

Each model specific insert <NUM>, <NUM> comprises at least one model specific cavity <NUM>, <NUM> configured to mate with at least one of the first or second model specific hearing devices <NUM>, <NUM>, respectively, see <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, and <FIG>.

<FIG> shows the charging kit or assembly <NUM> when being assembled or at disassembly (vertical double arrows visualize the directions of assembly and disassembly and the directions of insertion and removal of the model specific insert(s) <NUM>, <NUM>). The components making up the base charger <NUM>, such as the frame <NUM>, 16B, the control unit <NUM> and the bottom housing <NUM> are in some embodiments, e.g. in <FIG>, detachably connected by means of attachments 13A, e.g. screws, but could also be connected via snap fit locking <NUM> or the like as shown in <FIG>. In <FIG>, the frame <NUM> comprises walls 16B that define at least one cavity 16A for receiving at least one model specific cavity <NUM>, <NUM> of at least one model specific insert <NUM>, <NUM>. In <FIG>, the frame <NUM> is a stand or support for holding/attaching the adjustable support(s) <NUM> at one or more attachment points <NUM> and for enabling guiding and controlling the adjustability and movement of the adjustable support via one or more guides <NUM>.

In some embodiments, the base charger <NUM> comprises one or more cavities <NUM> configured to mate with or receive the first model specific insert <NUM> and/or the second model specific insert <NUM>, see <FIG> and <FIG>. The frame cavity(ies) 16A are arranged inside or within these one or more cavities <NUM> of the base charger after assembly, see e.g. <FIG> (after the top housing <NUM> is thread or placed over the frame <NUM> from above), 6A, 6B, 7B, 8A to 8C, 10A, 11A, 11B and <NUM>. Each model specific insert <NUM>, <NUM> in all embodiments of the present disclosure is configured to be held in place in the base charger <NUM> after insertion therein to form the charging kit and hearing device charger <NUM> by means of at least one attachment <NUM>, see <FIG> and <FIG>. The attachment <NUM> could be a snap fit locking or screw or adhesive bonding or similar, see <FIG> and <FIG>. In <FIG>, the attachment <NUM> is shown as a snap fit lock comprising one or more hook(s) <NUM> protruding from the first or second model specific insert <NUM>, <NUM> and corresponding one or more catch(es) <NUM> in the top housing <NUM> of the base charger <NUM> configured for receiving and/or holding and/or retaining the hook(s) <NUM>. The model specific insert(s) <NUM>, <NUM> is/are in some embodiments detachably attached to the frame <NUM>, 16B and/or the top housing <NUM> and/or the bottom housing <NUM> of the base charger <NUM>.

Each model specific insert <NUM>, <NUM> comprises at least one model specific cavity <NUM>, <NUM> configured to mate with the first or second model specific hearing device <NUM>, <NUM>, respectively, see <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, and <FIG>. This mating is preferably provided by molding the model specific insert(s) <NUM>, <NUM> and the model specific cavity(ies) <NUM>, <NUM> according to the associated hearing device(s) <NUM>, <NUM>. A tolerance may be added to the model specific cavity <NUM>, <NUM> in order to provide a loose fit of the model specific hearing aid(s) <NUM>, <NUM> in the model specific cavity. In some embodiments, each model specific insert <NUM>, <NUM> comprises two model specific cavities <NUM>, <NUM> of which each model specific cavity <NUM>, <NUM> is configured to mate with an associated one of the first model specific hearing devices <NUM> or to mate with an associated one of the second model specific hearing devices <NUM>. Commonly, each model specific cavity <NUM>, <NUM> is configured to receive only one hearing device <NUM>, <NUM>. In some embodiments (not shown), each model specific cavity <NUM>, <NUM> is configured to receive two or more hearing devices, providing one common model specific cavity <NUM>, <NUM>, e.g. as a twin cavity having two open and adjoining halves or spaces, one half space for each hearing device. In some embodiments, each model specific insert <NUM>, <NUM> comprises two model specific cavities <NUM>, <NUM> that pairwise is configured to mate with an associated pair of first model specific hearing devices <NUM> or to mate with an associated pair of the second model specific hearing devices <NUM>, see at least <FIG>.

In some embodiments, at least one of the first model specific hearing devices <NUM> and/or at least one of the second model specific hearing devices <NUM> and/or each of the hearing devices <NUM>, <NUM> is configured for wireless charging, e.g. by means of inductive coupling, capacitive coupling, magnetic coupling, radio frequencies, light waves and/or sound waves, etc. In some embodiments, one or both or more or all of the first and the second model specific hearing devices <NUM>, <NUM> is/are inductively chargeable. The transmitter charging element(s) <NUM> may in this disclosure be one or more transmitter coils and the receiver charging element(s) <NUM>, <NUM> may be one or more receiver coils, such as one or more inductive transmitter coils and one or more inductive receiver coils.

In some embodiments, see <FIG>, <FIG>, <FIG>, <FIG>, the hearing device charger <NUM> is configured to comprise two model specific hearing devices <NUM>, <NUM> inserted into the model specific insert <NUM>, <NUM>. The transmitter charging element(s) <NUM> to the right in <FIG> is arranged to be positioned at a start or base position P in the cavity/-ies <NUM> of the base charger <NUM> before the first model specific insert <NUM> or the (different) second model specific insert <NUM> is placed in the base charger <NUM>. This start position P is shown in <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG> and <FIG> before insertion of any model specific insert <NUM>, <NUM> in the base charger <NUM>. The same goes for the transmitter charging element(s) <NUM> to the left in <FIG> but for simplicity only the change of positions of each transmitter charging element and direction D of displacement are visualized with single and double arrows and dotted and dashed lines in more detail by means of the right transmitter charging element(s) <NUM> of <FIG>, and in some detail for any of the transmitter charging element(s) <NUM> in <FIG>, <FIG> and <FIG> to demonstrate the principle and functionality of the adjustable support(s) <NUM>. The transmitter charging element(s) <NUM> is/are configured to be displaced to a first position P<NUM> by the first model specific insert <NUM>. This enables the transmitter charging element(s) <NUM> to act with a bias/urging force towards the first model specific insert <NUM> when the first model specific insert is placed in the base charger <NUM>. The first position P<NUM> is different from the start or base position P. This first position P<NUM> is shown in <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG> and <FIG>. <FIG> further shows how a first distance d<NUM> from the start position P to the first position P<NUM> may be shorter than a second distance d<NUM> from the start position P to the second position P<NUM>. However, in <FIG>, the first distance d<NUM> from the start position P to the first position P<NUM> could be longer than the second distance d<NUM> from the start position P to the second position P<NUM>, hence, these distances d<NUM> and d<NUM> depend on the model specific insert(s) <NUM>, <NUM>. In some embodiments, these distances are more than two distances, e.g. a third or fourth distance in same way as the positions could be more than two positions if more than two different model specific inserts <NUM>, <NUM> were configured to be placed in the base charger <NUM> as the base charger <NUM> is adapted to receive more than two such different model specific inserts, one model specific insert at a time. <FIG> further shows how a symmetrical placement of two cavities <NUM>, <NUM> in a model specific insert <NUM>, <NUM> may be provided by means of the disclosed invention independent on which model specific insert is placed in the base charger <NUM>, e.g. independent on whether the first <NUM> or second model specific insert <NUM> or another model specific insert is placed in the base charger. This compared to <FIG> where positioning of the transmitter charging element(s) <NUM> and receiver charging element(s) <NUM>, <NUM> in the base charger cavity is the same for all model specific insert. In <FIG>, the distances d<NUM> and d<NUM> and sizes of the transmitter charging element(s) are not to scale to be able to visualize the movements between different positions, such as from the start position P for a first model specific insert <NUM> urging the transmitter charging element(s) <NUM> away from the first model specific insert to a first position P<NUM> at a first distance d<NUM> being smaller than when a second model specific insert <NUM> is inserted into the base charger <NUM> and urging the transmitter charging element(s) <NUM> to a second position P<NUM> at a second distance d<NUM>. In embodiments of <FIG>, the model specific insert(s) <NUM>, <NUM> when inserted into base charger <NUM> along the direction of the arrow pointing downwards, a lever <NUM> is pushed down urging the transmitter charging element(s) <NUM> towards the first model specific insert <NUM> to a first position P<NUM> at a first distance d<NUM> or towards the second model specific insert <NUM> to a second position P<NUM> at a second distance d<NUM>.

In some embodiments, the transmitter charging element(s) <NUM> is/are configured to be displaced to the first position P<NUM> to align with the first receiver charging element(s) <NUM> of the first model specific hearing device <NUM> when the first model specific hearing device is placed in the first model specific insert <NUM> in the base charger <NUM>. This enables the transmitter charging element(s) <NUM> to act with a bias or urging force towards the first model specific insert <NUM> and the first receiver charging element(s) <NUM> of the first model specific hearing device <NUM>. In some embodiments, the transmitter charging element(s) <NUM> is/are arranged to be positioned at the start position P in the cavity/-ies <NUM> of the base charger <NUM> before the second model specific insert <NUM> is placed in the base charger. The transmitter charging element(s) <NUM> is/are configured to be displaced to a first position P<NUM> or a second position Pz by the second model specific insert <NUM>. This enables the transmitter charging element(s) <NUM> to act with a bias/urging force towards the second model specific insert <NUM> when the second model specific insert is placed in the base charger <NUM>. The first or second position P<NUM>, P<NUM> is different from the start position P. This first or second position P<NUM>, P<NUM> is shown in <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG> and <FIG>.

In some embodiments, the transmitter charging element(s) <NUM> is/are configured to be displaced to the second position P<NUM> to align with the second receiver charging element <NUM> of the second model specific hearing device <NUM> when the second model specific hearing device is placed in the second model specific insert <NUM> in the base charger <NUM>. This enables the transmitter charging element(s) <NUM> to act with a bias or urging force towards the second model specific insert <NUM> and the second receiver charging element <NUM> of the second model specific hearing device <NUM>. The first or second position P<NUM>, P<NUM> is shown in <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG> and <FIG>. In some embodiments, the first distance d<NUM> between the start position(s) P and the first position(s) P<NUM> is shorter, equal to or longer than the second distance d<NUM> between the start position(s) P and the second position(s) P<NUM>. The positions P, P<NUM> and P<NUM> are shown in <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG> and <FIG>. In some embodiments, another model specific insert, e.g. a third or fourth one displaces the transmitter charging element(s) <NUM> to the first position P<NUM> or the second position P<NUM> or to another position if placed in the base charger <NUM>, i.e. these positions are in some embodiments different for each model specific insert. The above enables maintaining the symmetry of the cavities <NUM>, <NUM> in the base charger <NUM> even though differently shaped model specific inserts are placed therein.

In some embodiments, the adjustable support(s) <NUM> of the base charger <NUM> comprises one or more elastic elements <NUM> to make the transmitter charging element(s) <NUM> of the base charger movable between different positions P, P<NUM>, P<NUM> in the base charger. This enables the transmitter charging element(s) <NUM> to act with a bias/urging force towards or against or into contact with the first model specific insert <NUM> or the second model specific insert <NUM> when the first or second model specific insert is placed in the base charger <NUM>. In some embodiments, the elastic element(s) <NUM> of the adjustable support(s) <NUM> make the transmitter charging element(s) <NUM> of the base charger <NUM> movable between different positions P, P<NUM>, P<NUM> in the base charger when the first or second model specific hearing device <NUM>, <NUM> is placed in the first or second model specific insert <NUM>, <NUM>. This enables the transmitter charging element(s) <NUM> to act with a bias or urging force towards or against or into contact with the first receiver charging element <NUM> of the first model specific hearing device <NUM> when the first model specific hearing device is placed in the first model specific insert <NUM> in the base charger <NUM>, and also to act with a bias/urging force towards or against or into contact with the second receiver charging element <NUM> of the second model specific hearing device <NUM> when the second model specific hearing device is placed in the second model specific insert <NUM> in the base charger.

In some embodiments, see e.g. <FIG>, <FIG>, and <FIG>, the adjustable support <NUM> comprises an elongated body with a first free end 20A and a second end 20B opposite the first free end. Here, the transmitter charging element(s) <NUM> is/are arranged on the first free end 20A of the adjustable support <NUM>. The support plate 11A may be arranged between the transmitter charging element(s) <NUM> and the first free end 20A. The transmitter charging element(s) <NUM> may be attached to the first free end 20A via the support plate 11A. In some embodiments, see e.g. <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, and <FIG>, the second end 20B of the adjustable support <NUM> is attached to a guide <NUM> or attachment point <NUM> in the base charger <NUM>. Here, the first free end 20A of the adjustable support <NUM> is arranged movable and/or displaceable in the cavity/-ies <NUM> of the base charger <NUM>. In some embodiments, the elongated body of the adjustable support <NUM> comprises or is the elastic or compressible element <NUM>, <NUM>.

In some embodiments, see e.g. <FIG>, each adjustable support <NUM> comprises an elastic element <NUM> arranged at least partly between the first free end 20A and the second end 20B to exert a push force urging the first free end 20A of the adjustable support and/or the transmitter charging element(s) <NUM> inside the base charger <NUM> in a direction being substantially in parallel with or in parallel with or inclined or substantially perpendicular or perpendicular to the direction of insertion of the first <NUM> and/or the second model specific insert(s) <NUM>. These directions may be guided by at least one guide <NUM> in which the elongated body of the adjustable support <NUM> is moved by being displaced or slid by the elastic element <NUM> urging or biasing the elongated body, see <FIG>, <FIG>, <FIG>, and <FIG>.

In some embodiments, see e.g. <FIG>, the elastic element <NUM> is located between the first free end 20A and the second end 20B of the adjustable support <NUM>, i.e. located between a first attachment point <NUM> at the second end 20B in the form of a wall of the inner frame <NUM> of the base charger <NUM> and a second attachment point at the first free end 20A in the form of a shoulder or collar <NUM> on the elongated body of the adjustable support, see <FIG>. Here, the elastic element <NUM> of the adjustable support <NUM> is a helical spring arranged at least partly restrained between the shoulder <NUM> of the first free end 20A and the attachment point <NUM> of the second end 20B to be pre-tensioned to exert the bias or urging or pushing force towards the model specific insert(s) <NUM>, <NUM>, which push force is directed to the left of <FIG>, similar to the horisontal arrow in the elongated body of the adjustable support <NUM>. In some embodiments, e.g. in <FIG>, the helical spring <NUM> has one or first end 22A supported at the first attachment point <NUM> and guided by a first guide <NUM> at this end to the right in the figs. and has another or second end 22B to the left in these figs. , which second end 22B is supported and guided by the second attachment point being the shoulder <NUM> and a second guide <NUM>. The guides <NUM> provides control and stable movement for the elongated body and the helical spring <NUM> of the adjustable support <NUM> when being displaced back and forth in the urging direction D, i.e. away from or towards the model specific insert(s) <NUM>, <NUM> when inserted into or removed from the base charger <NUM>. In some embodiments, at least one or each of the first and the second ends 22A, 22B of the helical spring <NUM> is/are attached to the first attachment point <NUM> and/or the second attachment point being the shoulder <NUM>, this is of advantage to not have to handle a loose spring if assembled together with the elongated body of the adjustable support but may worsen the functionality and life span of the spring <NUM> due to higher incurred strain at its end(s).

In some embodiments, in <FIG> and <FIG>, the transmitter charging element(s) <NUM> is/are supported or connected or attached to a holder <NUM>. The holder <NUM> is in some embodiments securely attached to or integrated in the first free end 20A of the adjustable support <NUM> as in <FIG>, and <FIG> or an integrated part of the free end 20A as in <FIG> and <FIG>.

This holder <NUM> has at least two functions, one being a support for the transmitter charging element(s) <NUM> and one being a protection against wear from the model specific insert(s) <NUM>, <NUM> when inserted or removed from the base charger <NUM>. This wear protection of the holder <NUM> for the transmitter charging element(s) <NUM> is achieved in some embodiments by providing the holder with an outer protective frame or flange or edge <NUM> that could be straight or conical for enabling a loose fit at the beginning of the insertion of the model specific insert(s) <NUM>, <NUM> and tighter fit the further down the model specific insert(s) are moved into the base charger <NUM> and while urging the transmitter charging element(s) away or towards itself/themselves. In some embodiments, the protective flange or edge <NUM> extends around the whole circumference of the transmitter charging element(s) <NUM> or at least partly around the circumference of the transmitter charging element(s) <NUM>. The protective flange or edge <NUM> may extend around the upper circumference of the transmitter charging element(s) <NUM> closer to the upper housing <NUM> of the base charger as seen e.g. in <FIG> or extend at least partly around the circumference of the transmitter charging element(s) <NUM> with a shape similar to an upright U or horse shoe with its orifice or mouth directed upwards as seen e.g. in <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, and <FIG> or an upside down U or horse shoe as seen e.g. in <FIG>. In some embodiments, e.g. in <FIG> and <FIG>, the protective flange or edge <NUM> extends around the circumference of the transmitter charging element(s) <NUM> forming sides extending in substantially the same direction as the direction of insertion for the model specific insert(s) <NUM>, <NUM>. In some embodiments, e.g. in <FIG>, the protective flange or edge <NUM> extends around the circumference of the transmitter charging element(s) <NUM> forming sides extending in substantially the same direction as the direction of insertion for the model specific insert(s) <NUM>, <NUM>, which sides <NUM> extends in one direction substantially vertical closer to the upper housing <NUM> of the base charger <NUM> and transcends into another direction at the end closer to the bottom housing <NUM> of the base charger in an inclined direction towards the first free end 20A of the adjustable support <NUM>.

In some embodiments, see <FIG>, the spring <NUM> is configured to extend along the elongated body of the adjustable support <NUM> and to enclose or encompass or surround or cover at least a part of the outer surface of the elongated body of the adjustable support. The elongated body of the adjustable support <NUM> may be shaped like a cylindrical pin or be profiled with another elongated shape via extrusion. The cylindrical pin of the adjustable support <NUM> may be a solid or hollow cylindrical pin. The cylindrical pin of the adjustable support <NUM> is guided in the guide <NUM> of <FIG> by sliding back and forth to the right or left in these figs. according to the horisontal double arrow visualizing the urging or pushing direction D when the model specific insert(s) <NUM>, <NUM> is/are inserted into or removed from the base charger <NUM> as visualized by the vertical double arrow inside the model specific cavity/-ies <NUM>, <NUM>. In some embodiments, see <FIG>, the spring <NUM> is configured to extend along the elongated body of the adjustable support <NUM> but at least partly inside a channel or groove of the elongated body of the adjustable support.

In some embodiments, see e.g. <FIG>, <FIG>, and <FIG>, the first free end 20A of the adjustable support <NUM> and/or the transmitter charging element(s) <NUM> are/is arranged at least partly in one or more insert cavities 16A of the frame <NUM> of the base charger <NUM>. Each insert cavity 16A is defined by one or more insert guides 16B, such as one or more walls 16B extending from the frame <NUM> of the base charger <NUM> or one or more surfaces 16B of the frame <NUM> of the base charger <NUM>. The one or more insert guides 16B may fully or partly enclose the respective model specific cavity <NUM>, <NUM> as long as an orifice is provided for receiving the model specific insert(s) <NUM>, <NUM> when introduced into the base charger <NUM>. The one or more insert guides 16B of the base charger <NUM> may facilitate correct placement, i.e. guidance, of placement and alignment of the model specific insert(s) <NUM>, <NUM> in the base charger <NUM>.

In some embodiments, the base charger <NUM> comprises one or more insert receiving cavities 16A in which the model specific inserts <NUM>, <NUM> with the model specific insert cavities <NUM>, <NUM> are received.

In some embodiments, see <FIG>, <FIG>, the first free end 20A of the adjustable support <NUM> is arranged at least partly in the model specific insert cavities <NUM>, <NUM> and the insert receiving cavities 16A of the base charger. In some embodiments, see <FIG>, <FIG>, the transmitter charging element(s) <NUM> is/are arranged at least partly in the model specific insert cavities <NUM>, <NUM> and the insert receiving cavities 16A of the base charger. In some embodiments, see <FIG>, <FIG>, the first free end 20A of the adjustable support <NUM> and the transmitter charging element(s) <NUM> are arranged at least partly in the model specific insert cavities <NUM>, <NUM> and the insert receiving cavities 16A of the base charger. In some embodiments, see <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG> and <FIG>, the first free end 20A of the adjustable support <NUM> is arranged at least partly or fully in the insert receiving cavities 16A of the base charger <NUM>. In some embodiments, see <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG> and <FIG>, the transmitter charging element(s) <NUM> is/are arranged at least partly or fully in the insert receiving cavities 16A of the base charger <NUM>. In some embodiments, see <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG> and <FIG>, the first free end 20A of the adjustable support <NUM> and the transmitter charging element(s) <NUM> are arranged at least partly or fully in the insert receiving cavities 16A of the base charger <NUM>.

In some embodiments, see e.g. <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, the first free end 20A of the adjustable support <NUM> and/or the transmitter charging element(s) <NUM> are/is arranged fully outside the model specific insert cavities <NUM>, <NUM>. In some embodiments, see e.g. <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, the first free end 20A of the adjustable support <NUM> and/or the transmitter charging element(s) <NUM> are/is arranged at least partly in or fully outside the model specific insert cavities <NUM>, <NUM> and the insert receiving cavities 16A of the base charger <NUM>.

In some embodiments, see e.g. <FIG>, <FIG>, the model specific cavity/-ies <NUM>, <NUM> of the first or second model specific insert(s) <NUM>, <NUM> each is defined by at least one insert cavity wall <NUM>, <NUM> of the model specific insert and wherein each model specific cavity <NUM>, <NUM> comprises one or more through holes <NUM>, <NUM> through the insert cavity wall(s) <NUM>, <NUM>. Hence, the first free end 20A of the adjustable support <NUM> and/or the transmitter charging element(s) <NUM> are/is arranged at least partly in one or more of the through holes <NUM>, <NUM> when any of the first or second model specific insert(s) <NUM>, <NUM> is placed in the base charger <NUM>.

In some embodiments, see e.g. <FIG>, the first and/or second model specific inserts <NUM>, <NUM> may comprise one or more guide elements <NUM>, <NUM> configured to support correct/controlled insertion of the first or second model specific insert <NUM>, <NUM> into the base charger <NUM>. The guide elements <NUM>, <NUM> may protrude from or be attached to or arranged on an bottom outer surface or bottom cavity wall <NUM>, <NUM> and/or one or more side outer surface(s) or side cavity wall(s) <NUM>, <NUM> of the one or more cavity/-ies <NUM>, <NUM> of the model specific insert(s) <NUM>, <NUM>. Outer surfaces of the cavity/-ies <NUM>, <NUM> are the surfaces not facing and/or not being in contact with the model specific hearing aid(s) <NUM>, <NUM> when inserted. Inner surfaces of the cavity/-ies <NUM>, <NUM> are the surfaces facing and/or being in contact with the model specific hearing aid <NUM>, <NUM> when inserted.

In some embodiments, see e.g. <FIG>, <FIG>, the insert cavity(ies) 16A comprise(s) one or more insert guides or one or more insert guide walls 16B, wherein at least one of the insert guides or insert guide walls 16B comprises one or more through holes 16C in the insert guide or insert guide wall(s) 16B, which through hole(s) 16C is/are closed or fully surrounded by the insert guide(s) or insert guide wall(s) 16B over the whole circumference of the hole 16C, while in some embodiments, see e.g. <FIG>, and <FIG>, the through hole(s) 16C is/are only partly closed or surrounded by the insert guide or insert guide wall(s) 16B, i.e. holes are not closed, e.g. in <FIG> and <FIG>, the through holes 16C are elongated through holes or slits through the thickness of the insert guide or insert guide walls 16B extending all the way up to the edge or side of each insert cavity 16A and the one or more insert guides or insert guide walls 16B making the through holes 16C into recesses, whereby, here, the adjustable support <NUM> is a part of the insert guide(s) or insert guide wall(s) 16B. In some embodiments, see e.g. <FIG>, <FIG>, the elongated body of the adjustable support <NUM> shaped like a cylindrical pin or profiled with another elongated shape via extrusion may be arranged in the through hole(s) 16C. The elongated body of the adjustable support <NUM> shaped like a cylindrical pin may be configured to slide back and forth in the through hole 16C in the direction D when the first or second model specific insert <NUM>, <NUM> is inserted or removed from the base charger <NUM>.

In some embodiments, see e.g. <FIG>, <FIG>, <FIG>, <FIG>, and <FIG>, the first free end(s) 20A of the adjustable support(s) <NUM> and/or the transmitter charging element(s) <NUM> are/is arranged fully outside one or more model specific insert cavities <NUM>, <NUM> of the first or second model specific insert <NUM>, <NUM>.

In some embodiments, see e.g. <FIG> and <FIG>, the elastic element <NUM> comprises at least one elastic arm similar to a leaf spring or the elastic element <NUM> is made up of at least one elastic arm or leaf spring. In some embodiments, see e.g. <FIG>, the adjustable support <NUM> comprises the elastic arm(s) or leaf spring(s) <NUM> and the compressible element <NUM>, which together enable the adaptable positioning of the transmitter charging element(s) <NUM> being pressed against the compressible element <NUM> when the model specific insert(s) <NUM>, <NUM> are placed in the base charger <NUM> and the elastic arm(s) or leaf spring(s) <NUM> enable a flexibility in the direction perpendicular to the direction of insertion (shown by the solid arrow) for the model specific insert(s) <NUM>, <NUM> to provide an adaptable aligning of the transmitter charging element(s) <NUM> with the model specific insert(s) <NUM>, <NUM> that are differently sized and/or shaped etc., see this visualized in dotted lines in <FIG> to show another model specific insert being displaced and inserted at another position, as positions P and P<NUM>, P<NUM> depending on the model specific insert(s) <NUM>, <NUM>, the same positioning is applicable to <FIG>.

In some embodiments, see e.g. <FIG>, the model specific insert <NUM>, <NUM> comprises guiding surfaces <NUM> that engage the adjustable support <NUM> when inserted into the base charger <NUM>, such that the transmitting charging element(s) <NUM> is/are biased or urged or pressed from the start/base position P towards the model specific insert(s) <NUM>, <NUM> it-/themselves and/or the cavity wall <NUM>, <NUM> of the model specific insert(s) <NUM>, <NUM> and/or the receiver charging element(s) <NUM>, <NUM> into the first or second position P<NUM>, P<NUM> enabling charging by the hearing device charger <NUM>. The guiding surfaces <NUM> act as supports in some embodiments to facilitate insertion and holding of the model specific insert(s) <NUM>, <NUM> in proper fit, alignment and position.

In some embodiments, see e.g. <FIG>, where the elastic element <NUM> comprises or is made up of at least two upright elastic elongated arms or thin plates similar to leaf springs arranged in a sandwiched or laminated manner. In some embodiments, see e.g. <FIG>, <FIG>, <FIG>, <FIG>, <FIG>, and <FIG>, the elastic element <NUM> is made of metal or plastic or any combination of those materials, the same goes for the elastic element <NUM> when being a helical and/or leaf spring. In some embodiments, the elastic element <NUM> is made as a double or twin or triple spring, e.g. a smaller helical spring within one or more larger helical springs and/or a metal elastic elongated arms or thin plates similar to leaf springs sandwiched over one or more other metal elastic elongated arms or thin plates similar to leaf springs and/or plastic elastic elongated arms or thin plates similar to leaf spring(s). In some embodiments, see e.g. <FIG>, the elastic elongated arms or plates similar to leaf spring(s) <NUM> has/have a first free end 20A being made double, either "double-folded" or bent as in <FIG> or shaped as a poker or hay- or pitchfork with two claws. In some embodiments, see e.g. <FIG>, a larger part of the elastic element <NUM>, here, also an elastic arm or thin plate similar to a leaf spring, is double-bent where a first upper part is attached to the elongated body of the adjustable support <NUM> to be able to bend while urging or biasing or moving or pushing or pulling the elongated body of the adjustable support <NUM> and at the same time moving the transmitter charging element <NUM> linearly towards or from the model specific insert(s) <NUM>, <NUM> and/or the receiver charging element(s) <NUM>, <NUM> as shown with the double arrow for urging direction D when placed therein as the elongated body is guided in guides <NUM> in the wall 16B of the frame <NUM> and the frame at each end 20A, 20B of the elongated body. Hence, these double-shaped and bent first free ends 20A of the elastic and elongated arm similar to leaf spring(s) <NUM> provides additional flexibility when the model specific insert(s) <NUM>, <NUM> are inserted into the base charger <NUM> and thread past the adjustable support(s) <NUM> in a similar or same way as for all embodiments.

Hence, in some embodiments, the helical or leaf spring of the elastic element <NUM> is made of metal or plastic or any combination of those materials.

In some embodiments it is preferred that the elastic element <NUM> or at least parts of the elastic element <NUM> is made of metal, as metals are not exposed to creep (or permanent deformation over time due to an applied force), such as plastic materials may be. An elastic element <NUM> made of metal may thereby provide a more reliable bias or urging force urging the transmitter charging element(s) <NUM> against or towards one of the model specific inserts <NUM>, <NUM> when the model specific insert is placed in the base charger <NUM>, this both over time and if a model specific insert with larger cavity/-ies <NUM>, <NUM> is replaced with a model specific insert with smaller cavity/-ies so that the distance d<NUM>, d<NUM> the transmitter charging element(s) <NUM> is/are urged or bias becomes shorter. <FIG> shows how the elastic element <NUM> may comprise a helical spring, which preferably may be made of metal. <FIG> shows an example of an elastic element <NUM> comprising an elastic arm which preferably may be made of metal. <FIG> shows how the elastic element <NUM> may comprise both a metal plate and an elastic arm made of plastic. The metal plate <NUM> may be added to support the elastic arm <NUM> made of plastic, wherein the metal plate is the thinner plate (to the right in <FIG>) compared to the thicker elastic arm of plastic (to the left in <FIG>).

In some embodiments, see e.g. <FIG>, the first free end 20A of the adjustable support <NUM> comprising the transmitter charging element <NUM> or the support plate 11A comprises a hinged or pivotable part <NUM> connecting the transmitter charging element(s) <NUM> or the support plate 11A to the first free end 20A of the adjustable support <NUM> via a pivot or hinge connection <NUM>. In some embodiments, see e.g. <FIG>, the second end 20B of the adjustable support <NUM> is pivotally attached to one or more attachments <NUM> of the frame <NUM> of the base charger <NUM> via one or more torsion hinges <NUM>.

In some embodiments, see e.g. <FIG>, the adjustable support <NUM> comprises a protruding member or arm or lever <NUM> arranged between the first free end 20A and the second end 20B. The adjustable support <NUM> may in this embodiment be an flexible arm being attached to the frame <NUM> of the base charger <NUM> by means of a hinge <NUM> and/or may be an elongated arm similar to a leaf spring protruding from or being attached to the frame <NUM> of the base charger <NUM>. The adjustable support <NUM> may define an axis extending from the first free end 20A to the second end 20B. The protruding lever <NUM> may extend along a longitudinal axis being perpendicular or approximately perpendicular to the axis between the first free end 20A and the second end 20B. The protruding lever <NUM> is configured to be engaged by a lower part or bottom of any of the first or second model specific insert(s) <NUM>, <NUM> when any of the first or second model specific insert(s) is introduced into the base charger <NUM> as visualized by the solid arrow of <FIG> pointing downwards. Hence, the first free end 20A is biased/urged with the transmitter charging element(s) <NUM> towards and/or against the model specific insert(s) and/or the associated receiver charging element <NUM>, <NUM> by the protruding lever <NUM> working as a torque arm.

In some embodiments, see e.g. <FIG> and <FIG>, the adjustable support <NUM> comprises the compressible element <NUM> arranged at least partly between the first free end 20A and the transmitter charging element <NUM> to provide a flexibility and/or a tolerance adaptability and/or to exert a bias force urging the first free end 20A of the adjustable support and/or the transmitter charging element <NUM> away from each other, when the first or second model specific insert is not placed in the base charger <NUM>, and/or towards the first or second model specific insert <NUM>, <NUM>, when the first or second model specific insert is placed in the base charger <NUM>, in a direction being substantially in parallel with or in parallel with or inclined or substantially perpendicular or perpendicular to the direction of insertion of the first model specific insert and/or the second model specific insert. In some embodiments, see e.g. <FIG>, the adjustable support may comprise both the compressible element <NUM> and an elastic element <NUM>, such as a spring (e.g. the elongated arm similar to a leaf spring or a helical spring). The compressible element <NUM> may possibly be used in most of the embodiments of the present disclosure but in some embodiments, the compressible element <NUM> is not always necessary to use.

In some embodiments, see e.g. <FIG>, <FIG>, one or more weights <NUM> could be permanently fixed or integrated in the base charger <NUM> or be an optional entity and/or be a unit detachable from the base charger. The one or more weights <NUM> may preferably be arranged in the bottom part or bottom housing <NUM> of the base charger <NUM> to ensure stability of the hearing device charger <NUM> when standing on a table or any other substantial flat surface, so that the hearing device charger <NUM> do not tilt when subjected to a minor push or the like.

The hearing device charger <NUM> may comprise one or more control units <NUM> for controlling the functionality of the charging by being operatively connected to other components of the hearing device charger <NUM>, the base charger <NUM> and its transmitter charging element(s) <NUM>. The hearing device charger <NUM> and base charger <NUM> comprises one or more conduits or wiring for operative connection, e.g. electrical wiring or conduits <NUM>, between the control unit <NUM> and the transmitter charging element(s) <NUM> and/or any other associated component required for control and powering of the charging. The electrical wiring <NUM> is in some embodiments accomplished by loose wiring to enable the flexibility and movement of the transmitter charging element(s) <NUM> when adapting to the different model specific insert(s) <NUM>, <NUM> and/or the model specific hearing device(s) <NUM>, <NUM>. The control unit <NUM> for controlling the hearing device charger <NUM> is operatively connected to all necessary components, such as electronics and/or electronic circuits and mechanical devices incl. electrical switches, relays, integrated circuits, conduits, external power applications providing power to the hearing device charger <NUM> etc. However, these entities working together for the operation of the hearing device charger <NUM> are possible to implement by use of many different types of components and parts being common knowledge for a skilled person and are therefore not explained in detail herein. The control and charging control unit <NUM> for controlling the hearing device charger <NUM> and its charging are in some embodiments operatively connected to one or more built-in and rechargeable batteries to safely operate the hearing device charger <NUM> and/or charge the battery/-ies <NUM>, <NUM> in each hearing device <NUM>, <NUM> when the hearing device charger <NUM> is not connected to an external power source.

In some embodiments, the elastic element <NUM> works as or is a biasing organ.

In some embodiments, the transmitter charging element(s) <NUM> inside the cavity/-ies <NUM> of the base charger <NUM> is/are positioned and/or moved and/or displaced by one or more forces exerted by the insertion of the first model specific insert(s) <NUM> and/or the second model specific insert(s) <NUM> and/or by insertion of a third or fourth model specific insert <NUM> and/or fifth second model specific insert <NUM> or more.

In some embodiments, the base charger <NUM> is adapted to removable receive the first model specific insert(s) <NUM> having/for the first model specific hearing device(s) <NUM> to enable replacing the first model specific insert(s) with the second (and different) model specific insert(s) <NUM> having/for the second model specific hearing device(s) <NUM> comprising the second receiver charging element(s) <NUM>.

In some embodiments, see e.g. <FIG>, the adjustable support <NUM> comprises an elastic element <NUM> being a helical spring made of metal and the elongated body is a cylindrical pin or axle extending through the helical spring <NUM> giving better guidance/control of the movement for the adjustable support and the transmitter charging element(s) <NUM>. This as the helical spring <NUM> made of metal is not exposed to creep (or permanent deformation over time due to an applied force) in the same manner as a plastic spring might be and the movement of the helical spring is guided/controlled by the cylindrical pin extending through the helical spring.

Claim 1:
A charging kit (<NUM>) for charging one or more rechargeable hearing devices (<NUM>,<NUM>), the one or more hearing devices being configured to be worn by a user, the charging kit comprising a base charger (<NUM>) and first model specific insert (<NUM>) for a first model specific hearing device (<NUM>) of the one or more hearing devices, the base charger being configured to receive the first model specific insert (<NUM>), the base charger comprising a transmitter charging element (<NUM>), where the first model specific insert is adapted to removably receive at least the first model specific hearing device (<NUM>), the first model specific hearing device comprising a first receiver charging element (<NUM>), characterized in that the transmitter charging element (<NUM>) is arranged in the base charger (<NUM>) on an adjustable support (<NUM>) being configured to provide an adaptable positioning of the transmitter charging element, whereby the transmitter charging element is configured to be urged towards the first model specific insert when the first model specific insert is placed in the base charger thereby enabling energy to be transferrable from the transmitter charging element to the first receiver charging element (<NUM>) of the first model specific hearing device (<NUM>) when placed in the first model specific insert.