HEARING DEVICE

Abstract

The present disclosure concerns a hearing device (10) with improved sealing and providing easy exchange of for example covers and/or filters and/or sealings in/on the hearing device.

Claims

1. A hearing device comprising: a hearing device housing; at least one microphone accommodated by the hearing device housing; a cover comprising a filter for covering an audio channel; a power source; a control unit operationely connected to the at least one microphone and the power source; a sealing configured to protect the control unit and the power source by preventing damp, moist, dirt, and dust from entering into an interior of the hearing device housing; wherein the cover and the hearing device housing comprise respective coupling parts for detachable connection with each other, wherein the sealing is configured to keep the hearing device housing sealed when the cover is disconnected from the hearing device housing.

2. The hearing device according to claim 1, further comprising another cover, wherein the cover and the other cover are of different types, and wherein the cover and the other cover are exchangeable with each other for selective coupling with the hearing device housing.

3. The hearing device according to claim 1, further comprising another cover comprising another filter, wherein the filter and the other filter are of different types, and wherein the cover and the other cover are exchangeable with each other for selective coupling with the hearing device housing.

4. The hearing device according to claim 1, wherein the cover and hearing device housing define a space therebetween, such that at least a part of the filter is situated in the space between cover and hearing device housing.

5. The hearing device according to claim 1, wherein at least a part of the filter is in a void of the cover.

6. The hearing device according claim 5, wherein at least a third of a volume of the filter is in the void of the cover.

7. The hearing device according to claim 5, wherein at least a third of a weight of the filter is in the void of the cover.

8. The hearing device according to claim 1, wherein at least a part of the sealing is disposed between the cover and the hearing device housing.

9. The hearing device according to claim 1, wherein the coupling parts comprise a snap coupling mechanism configured for detachably connecting the cover and the hearing device housing.

10. The hearing device according to claim 1, wherein the coupling parts comprise a locking pin configured for detachably connecting the cover and the hearing device housing.

11. The hearing device according to claim 1, wherein the coupling parts are configured to engage a locking pin, and wherein the locking pin is configured to detachably connect the cover and the hearing device housing.

12. The hearing device according to claim 1, wherein the coupling parts comprise first coupling part(s), and wherein the cover comprises the first coupling part(s).

13. The hearing device according to claim 12, wherein the coupling parts comprise second coupling part(s), and wherein the hearing device housing comprises the second coupling part(s).

14. The hearing device according to claim 1, wherein the cover comprises a flange, a side, or a wall, and wherein at least a part of the hearing device housing is enclosed by the flange, the side, or the wall of the cover.

15. The hearing device according to claim 14, wherein at least one of the coupling parts is at, or is coupled to, the flange, the side, or the wall.

16. The hearing device according to claim 1, wherein the hearing device housing comprises a flange, a side, or a wall, and wherein at least a part of the cover is enclosed by the flange, the side, or the wall of the hearing device housing.

17. The hearing device according to claim 16, wherein at least one of the coupling parts is at, or is coupled to, the flange, the side, or the wall.

18. The hearing device according to claim 1, wherein the sealing is configured to provide a watertight connection between the cover and the hearing device housing.

19. The hearing device according to claim 1, wherein the sealing comprises silicone.

20. The hearing device according to claim 1, wherein the hearing device housing comprises a hole configured to align with a corresponding hole at the cover, and wherein the hearing device further comprises a locking pin configured for insertion into the hole and the corresponding hole to lock the cover and the hearing device housing against each other.

21. The hearing device according to claim 20, wherein the locking pin is configured to couple with at least one of the holes by a frictional force.

22. The hearing device according to claim 1, wherein the coupling parts comprise a first hole at one of the cover and the hearing device housing, wherein the coupling parts comprise a second hole at the other one of the cover and the hearing device housing, wherein the first hole is configured for alignment with the second hole, and wherein the hearing device further comprises a locking pin configured for insertion into the first hole and the second hole.

23. The hearing device according to claim 22, wherein the first hole or the second hole is at a flange, a side, or a wall, of the cover or the hearing device housing.

24. The hearing device according to claim 22, wherein the locking pin is configured to couple with at least one of the holes by a frictional force.

25. The hearing device according to claim 1, wherein the coupling parts comprise a first set of coupling parts and a second set of coupling parts, and wherein the first set of the coupling parts and the second set of the coupling parts are at opposite ends of the hearing device.

26. The hearing device according to claim 1, wherein the cover comprises an user interface configured to control the power source of the hearing device.

27. The hearing device according to claim 26, wherein the user interface is a button being movably connected to a part of the cover, and wherein the button is operatively connected to the power source when the cover is detachably connected to the hearing device housing.

28. The hearing device according to claim 27, wherein the button is operatively connected to the power source via at least a part of the sealing.

29. The hearing device according to claim 1, wherein the sealing comprises a silicone membrane.

30. The hearing device according to claim 1, wherein one of the coupling parts comprises a hook-like member.

31. The hearing device according to claim 1, wherein the coupling parts are configured to limit movement between the cover and the hearing device housing.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The embodiments will be described in more detail with reference to the enclosed figures.

[0041] FIG. 1 is a perspective view of a hearing device comprising an enclosure that in turn comprises two parts, one housing and one cover according to an embodiment.

[0042] FIG. 2 is a perspective view of a system shown in a first stage, the system comprising a hearing device according to FIG. 1 and a separate tool, with a first and a second end, being adapted for both separating the two-part hearing device into its housing part and cover and to assemble the two-parts of the hearing device, i.e. its housing part and cover, into the whole hearing device again, which first stage shows the hearing device in an assembled state before the hearing device is disassembled according to an embodiment.

[0043] FIG. 3 is a perspective view of the system of FIG. 2 shown in a second stage, where the tool has been aligned in a certain position with a first end comprising a fixed protruding push pin facing the hearing device and moved in the direction of the straight dotted arrow of FIG. 2 such that its push pin protrudes into and through the hearing device to engage a first locking pin and pushes this first locking pin in the hearing device out of the hearing device in the direction of the straight dotted arrow of FIG. 3 to enable separating the cover from the housing part according to an embodiment.

[0044] FIG. 4 is a perspective view of the system of FIGS. 2 and 3 shown in a third stage, where the tool has been moved in an opposite direction (straight dotted arrow of FIG. 4) compared to the direction of the straight dotted arrow of FIG. 2 to pull its push pin out of the hearing device according to an embodiment.

[0045] FIG. 5 is a perspective view showing the hearing device of FIGS. 1 to 4 in disassembled state, i.e. its parts forming its enclosure are being assembled together after being detached as shown in FIGS. 2 to 4 and symbolised by the straight/bent/curved dotted arrow heads I or are/are being disconnected as symbolised by the straight/bent/curved dotted arrow heads II according to an embodiment.

[0046] FIG. 6 is a perspective view of the system of FIGS. 2, 3 and 4 shown in a fourth stage, where the tool has been turned 180 in the direction of the bent/curved dotted arrows of FIG. 4, so that its other/second end comprising a detachable second locking pin faces the hearing device, and a detachable cap/lid of this other/second end of the tool has been detached/removed by being withdrawn from the second tool end in the direction of the straight dotted arrow II to reveal/expose the detachable second locking pin and then is aligned in the corresponding position as for the push pin of FIGS. 2 and 4, such that the second locking pin is able to be pushed into the hearing device at the same location as the first locking pin by moving the tool towards the hearing device in the direction of the other straight dotted arrow with one arrow head of FIG. 6 according to an embodiment. In FIG. 6, the detachable cap/lid of the tool is possible to assemble onto the second tool end by being pushed onto it in the direction of the straight dotted arrow I to cover the detachable second locking pin according to an embodiment.

[0047] FIG. 7 is a perspective view of the system of FIGS. 2, 3, 4 and 6 shown in a fifth stage, where the tool has been moved with its second locking pin towards and into contact/engagement with the hearing device in the direction of the straight dotted arrow with single arrow head of FIG. 6 such that its second locking pin protrudes into the hearing device to partly engage it to prepare/initiate final assembly of the cover and housing part of the hearing device according to an embodiment.

[0048] FIG. 8 is a perspective view of the system of FIGS. 2, 3, 4, 6 and 7 shown in a sixth stage, where the tool has been moved from the position in FIG. 7 away from the hearing device in the opposite direction, i.e. according to the straight dotted arrow with single arrow head of FIG. 8 extending along the length of the tool, such that its second locking pin is released from the tool and protrudes partly out of the hearing device to prepare/initiate final assembly of the cover and housing part of the hearing device according to an embodiment.

[0049] FIG. 9 is a perspective view of the system of FIGS. 2, 3, 4, 6, 7 and 8 shown in a seventh stage, where the tool has been moved with its second end firstly along the hearing device in a direction substantially perpendicular or perpendicular to the longitudinal extension of the tool as visualised with the left straight dotted arrow of FIG. 8 and then in the direction of the straight dotted arrow of FIG. 9 being the opposite direction compared to the right straight dotted arrow in FIG. 8 towards and again into contact/engagement with the hearing device and the exposed end of the partly protruding second locking pin of FIG. 8 of its second end such that the second locking pin is pushed further into the hearing device until it is substantially flush or flush or even somewhat retracted below the outer surface of the hearing device to finally engage and assemble the cover and housing part of the hearing device detachably together according to an embodiment.

[0050] FIG. 10 is a perspective view of the hearing device according to FIGS. 1 to 9 with a new locking pin that also is replaceable if required later on according to an embodiment.

DETAILED DESCRIPTION

[0051] Various embodiments are described hereinafter with reference to the figures. Like reference numerals refer to like elements throughout. Like elements will, thus, not be described in detail with respect to the description of each figure. It should also be noted that the figures are only intended to facilitate the description of the embodiments. They are not intended as an exhaustive description of the claimed invention or as a limitation on the scope of the claimed invention. In addition, an illustrated embodiment needs not have all the aspects and/or advantages shown. 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 embodiments even if not so illustrated, or if not so explicitly described. Throughout, the same reference numerals are used for identical or corresponding parts.

[0052] A system 1 comprising at least one hearing device 10 and at least one tool 20 is shown in FIGS. 2-4 and 6-9 as examples/embodiments. The hearing device 10 comprises a housing 100 having at least one sealing 130 and at least one detachable cover 200 having at least one exchangeable audio filter 210. The separate tool 20 with handle is adapted for disconnecting the cover 200 from the housing 100 to enable changing cover and/or audio filter and/or sealing. The exchange is done if the cover is broken and/or too worn and/or need an upgrade and/or change of appearance, e.g. colour and/or shape and/or structure.

[0053] The hearing device 10 is shown in FIGS. 1-10 as an example/embodiment. The hearing device 10 comprises the housing 100, at least one microphone 110, at least one audio channel 120 to guide sound to the microphone. The hearing device 10 comprises the at least one sealing 130, a first coupling part 140 and a second coupling part 150 for detachable connection with corresponding or mating parts 240, 250 of cover 200. The hearing device 10 comprises a mating and/or upper and/or top interface or part and/or flange/-s/side/-s/wall/-s 160 at which the cover 200 is removably connected. The hearing device 10 comprises a lower or outer enclosure or part 170 facing away from its upper part 160. The hearing device 10 comprises at least one locking hole 180 for detachable connection and alignment with one or more corresponding hole/-s 260 of cover 200 to enable a locking pin 400, 410 to protrude therethrough. The complementary coupling parts 140, 150, 240, 250 comprise snap coupling means configured for detachably connecting cover 200 and hearing device housing 100. The complementary coupling parts 140, 150, 240, 250 comprise the exchangeable locking pin 400, 410 being configured for detachably connecting cover 200 and hearing device housing 100. The complementary coupling parts 140, 150, 240, 250 are configured for engaging the exchangeable locking pin 400, 410 that in turn is configured for detachably connecting cover 200 and hearing device housing 100 by engaging and locking into the complementary coupling parts. The holes 180 is inner holes of the hearing device 10. The other holes 260 is situated closer to the outer/envelope surface of the hearing device 10, i.e. its cover 200 and/or its housing 100, and/or the other holes 260 are outer through holes and/or have orifices that the locking pin 410 firstly enter before entering the inner through holes 180 when pushed in. The complementary coupling parts 140, 150, 240, 250 are configured to mate as a finger joint, almost intertwined, whereafter the holes 180 on/in first fingers and holes 260 on/in second fingers are aligned with a common through/protruding “line of sight” forming a hollow straight channel or through passage/bore such that the fixed pin 21 and lockings pins 400, 410 are able to be pushed through and into/out of this through passage of holes 180, 260 when a new locking pin 410 is assembled into the holes as a beam and the first locking pin 400 be pushed out of engagement with these holes and the passage when the first locking pin is detached/disassembled, i.e. the new locking pin 400 and the first pin 410 then changes place.

[0054] The holes 180 of hearing device housing 100 are configured for alignment with the similar cover holes 260 such that the cover is able to be detachably locked with the hearing device housing by means of the exchangeable locking pin 400, 410 as being configured for engaging and detachably locking into the aligned holes 180, 260 in both cover and housing when finally assembled together. The complementary coupling parts 240, 250 of cover 200 comprise the holes 260 situated in the flanges/sides/walls 230 being configured for alignment with the similar holes 180 of the complementary coupling parts 140, 150 of housing 100 provided in its at least one enclosed part such that the cover is able to be detachably locked with the hearing device housing by enabling the exchangeable locking pin 400, 410 to engage and lock into all the aligned holes 180, 260 by being pushed therethrough. The cover and housing holes 180, 260 and each exchangeable locking pin 400, 410 configured for detachably connecting the cover and the hearing device housing are made with a tolerance, such that each exchangeable locking pin is locked into at least one of the holes by a first friction force F.sub.1 (see FIG. 2) adapted to keep the locking pin in place during normal use of the hearing device 10 after assembly. The hearing device 10 comprises at least one power source 190, e.g. a battery, for its operation.

[0055] The hearing device 10 comprises and is controlled by at least one controlling unit, e.g. via a knob or button 300 that is accessible from its exterior. The unit for controlling hearing device 10 is operatively connected to other components including the microphones 110 and battery 190, such as electronics/electronic circuits and mechanical devices incl. electrical conduits etc., however, these entities working together for the operation of the hearing device 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 cover 200 comprises an user interface, e.g. the knob 300, configured for controlling at least the power source 190 of the hearing device 10 for its operation. The user interface is a button 300 being movably and mechanically connected to cover 200 such that the button is operatively connected to the control electronics of hearing device 10 and its power source 190 when the cover is detachably connected to the hearing device housing 100 but could in other aspects be a touch sensitive button using the same technology as a touch screen. The button 300 is operatively connected to the control electronics of hearing device 10 and at least its power source 190 via at least a part of the sealing 130 of hearing device housing 100.

[0056] The sealing 130 of the hearing device 10 is adapted for sealing the interior of the hearing device housing 100 against damp, moist, water or other liquids, dirt and dust for protection of control circuits, including control unit 300 and power source 190 and all other associated components necessary for operation of the hearing device 10. The cover 200 and hearing device housing 100 comprise the complementary coupling parts 140, 150, 240, 250 for detachable connection, such that the cover is exchangeable while keeping the hearing device housing 100 tightly sealed/watertight, when the cover is disconnected from it, but also when the cover is connected to the housing. The sealing 130 comprises silicone and/or is at least partly made of silicone and/or is provided by a silicone membrane.

[0057] Each microphone 110 works as an input transducer and the functionality of hearing device 10 is explained shortly here as its function is common knowledge for a skilled person. Each microphone 110 receives sound through an audio channel 120 and a filter 210 and outputs an analogue audio signal based on the acoustic sound signal arriving at the microphone when the hearing device 10 is operating. An analogue-to-digital converter converts the analogue audio signal into a corresponding digital audio signal for digital signal processing in the hearing circuit, such as a hearing loss processor that is configured to compensate a hearing loss of a user of the hearing device. Preferably, the hearing loss processor comprises a dynamic range compressor well-known in the art for compensation of frequency dependent loss of dynamic range of the user often termed recruitment in the art. In this way, the hearing device 10 may be configured to restore loudness, such that loudness of the hearing loss compensated signal as perceived by the user wearing the hearing device 10 substantially matches the loudness of the acoustic sound signal arriving at the microphone 110 as it would have been perceived by a listener with normal hearing. Accordingly, the hearing loss processor outputs a digital hearing loss compensated audio signal. A digital-to-analogue converter then converts the digital hearing loss compensated audio signal into a corresponding analogue hearing loss compensated audio signal. An output transducer in the form of a receiver converts the analogue hearing loss compensated audio signal into a corresponding acoustic signal for transmission via a loudspeaker or the like towards an eardrum of the user, whereby the user hears the sound originally arriving at the microphone, however, compensated for the user's individual hearing loss. The hearing loss processor is operatively coupled to the control unit and/or master unit and/or the knob 300 of hearing device 10 in a way being common knowledge to a skilled person, wherefore this functionality of the hearing device is not further explained herein.

[0058] The separate tool 20 is shown in FIGS. 2-4 and 6-9 as examples/embodiments. The tool 20 is adapted for easy and quick exchange of a cover 200 with one or more filters 210 (audio filters or the like). This is enabled in that the cover 200 is detachable from the hearing device housing 100, which also enables changing a sealing 130 if desired, after the cover is detached from the housing as this gives access to sealing 130 and/or filters 210. The cover 200 comprises at least one void or cavity 220 for receiving and/or holding at least a part of or the whole filter 210. The cover 200 comprises at least one flange or side or wall 230. The cover 200 comprises at least one first coupling member 240 for detachable connection with the first coupling part 140 of housing 100 and at least one second coupling member 250 for detachable connection with the second coupling part 150 of housing 100. The cover 200 comprises at least one locking hole 260 for detachable connection and alignment with one or more of the corresponding holes 180 of housing 100 by means of the locking pin 400, 410 protruding therethrough. The cover 200 comprises the flanges and/or sides and/or walls 230 configured for fitting to the hearing device housing 100 such that at least a part of the flange/wall/side 160 of the hearing device housing can be enclosed by the flanges and/or sides and/or walls of cover 200 or hearing device housing 100 comprises one or more flanges and/or sides and/or walls 160 configured for fitting to cover 200 such that at least a part of cover/cover flange/side/wall 230 can be enclosed by a flange/side/wall 160 of housing 100. In one aspect, the complementary hearing device coupling parts 140, 150, 240, 250 comprise at least two sets of different coupling parts, one part being a hook-like member 250 (see FIG. 5) and a thereto adapted member 150 so that movement between the cover 200 and the hearing device housing 100 is limited when connected by the one part, and a second part 140, 240 complementing the one part 150, 250 such that the cover is detachably fixated when cover and hearing device housing is connected by both the one part and the second part. The second part of the hearing device 10 comprising the coupling parts 140 and 240 is located at a first end 10A of the hearing device as seen in FIG. 5. The one part of the hearing device 10 comprising the coupling parts/members 150 and 250 is located at a second end 10B of the hearing device as seen in FIG. 5. The complementary member 250 of the hearing device 10 is introduced and/or hooked over the complementary adapted member 150 in a straight and/or somewhat rotary movement as seen in FIG. 5 at a second end 10B of the hearing device. The first hearing device end 10A comprises a first coupling part 140 placed at/on a part of the hearing device housing 100. The second hearing device end 10B comprises a second coupling part 150 placed at/on a part of the hearing device housing 100. The first hearing device end 10A comprises a first coupling member 240 placed at/on the hearing device housing cover 200. The second hearing device end 10B comprises a second coupling member 250 at/on the hearing device housing cover 200. The first coupling part 140 is configured for being part of a finger joint of the hearing device 10. The second coupling part 150 is in some aspects configured for being part of a finger joint of the hearing device 10. The first coupling member 240 is configured for being part of a finger joint of the hearing device 10. The second coupling member 250 is in some aspects configured for being part of a finger joint of the hearing device 10. The complementary member 250 is introduced/hooked over the complementary adapted member 150 at/on the second hearing device end 10B just before the first coupling parts 140 and 240 are joined in a finger joint at/on the first hearing device end 10A when the cover 200 is assembled onto the hearing device housing 100 to make up the whole hearing device 10 as seen in FIG. 5. When detaching the cover 200 from the housing 100, this is done in a reverse or opposite order. The hearing device 10 comprises in some aspects one or more finger joints as disclosed, e.g. one finger joint at its first end 10A or one finger joint at its second end 10B. The hearing device 10 comprises in some aspects at least two finger joints as disclosed, e.g. one finger joint at its first end 10A and one finger joint at its second end 10B.

[0059] In some aspects, the hearing device housing 100 or the cover 200 could optionally have a guiding pin or the like (not shown) protruding out of the housing or cover in a direction substantially perpendicular or perpendicular to the longitudinal directions of the locking pins 400, 410 and being configured for introduction/receivment of a hole or receptacle (not shown) in the opposite entity, i.e. the cover 200 if the pin is placed in and protrudes out of the housing 100 or the housing 100 if the pin is placed in and protrudes out of the cover 200. In some aspects, the housing 100 and/or cover 200 could each comprise more than one guiding pin and/or receptacle, e.g. a pair of pins/receptacles each.

[0060] The cover 200 is exchangeable to another type of cover and/or another cover comprising another type of filter 210 and/or at least two different types of filter as shown in FIG. 5. Each filter 210 protects the interior of hearing device 10 from dirt or at least reduces the amount of dirt entering an audio channel 120. Cover 200 and hearing device housing 100 are configured for creating a space therebetween such that at least a part of the filter 210 can be situated in the space created between cover and hearing device housing. In one aspect, at least a third of the volume of a filter 210 is provided in the associated cover void 220 and/or at least a third of the weight of a filter is provided in the cover void.

[0061] The tool 20 comprises an easy grippable handle having a first fixed pin 21 for pushing out a first locking pin 400 detachably connecting the cover 200 and the hearing device housing 100 as the hearing device 10. The tool handle comprises the second detachable locking pin 410 being configured for replacing the first locking pin 400 and thereby once again detachably mating cover and hearing device housing after first disassembling these entities by pushing out the first locking pin and then pushing in the second locking pin 410 in the same holes 180, 260 as the first locking pin 400. The first locking pin 400 and second detachable locking pin 410 are essentially identical or identical in dimension (within the tolerances of this technical area). In one aspect, the first locking pin 400 and the second detachably locking pin 410 are made of the same material.

[0062] When the separate tool 20 and the hearing device 10 is in use, they together form a system 1 enabling easy exchange of the cover 200 of hearing device 10 (including one or more filters 210 and/or sealings 130). In one aspect of the tool 20 and/or system 1, the second detachable locking pin 410 is attached to the tool 20, i.e. its second end 20B of its handle by a second friction force F.sub.2. In another aspect, the second friction force F.sub.2 is lower than the first friction force F.sub.1. In yet an aspect, the second friction force F.sub.2 is greater than the gravitational force acting on the detachable locking pin 410. The second detachable locking pin 410 is held by a holder/receiver 23 of the handle of the tool 20. The pushing of the second locking pin 410 into the same holes 180, 260 as the first locking pin 400 is enabled by engaging an interface or surface 24 of the second tool end 20B against the end of a locking pin 410 as shown in FIGS. 2, 8 and 9 that pushes the locking pin further into a final assembly position shown in FIG. 10. The surface 24 is flat and extends in a plane being perpendicular to the longitudinal axes of the tool 20 and its pins 21, 410. The surface 24 is shaped as a cross/plus sign as seen in FIGS. 2-4 but could in other aspects be of circular or oval or shaped as letter O or have a triangular shape or another shape as long as this surface is able to abut/contact the end of the second locking pin 410 that protrudes out of the hole 260 of cover 200 of hearing device 10 as shown in FIG. 8, i.e. the contacting area between surface 24 and the protruding end of the second locking pin 410 are separated from the centre area of the holder 23, i.e. not coinciding with the centre of the holder 23 as shown in FIGS. 2-4. The holder 23 of the tool handle is in the form of a hole and/or bushing 23 for the second detachable locking pin 410. The bushing 23 is made of plastic and/or rubber. The bushing 23 comprises a centre cavity or the centre hole in which the second detachable locking pin 410 is introduced and received and detachably held after introduction, which cavity/hole and pin 410 is adapted in size and/or shape and/or surface roughness and/or materials and/or dimensions such that the removable holding and/or attachment of the pin 410 by means of the second friction force F.sub.2 is achieved. Examples of the shape of the centre cavity or hole of the holder 23 achieving the second friction force F.sub.2 are cross-sections or openings with a shape corresponding to the surface 24 or with a circular cross-section or being shaped as a three-leaf clover or trefoil as seen in FIG. 2 when viewing the tool 20 from its second end 20B in the longitudinal direction of the tool.

[0063] The tool 20 comprises at least one outer rib 25 extending radially along the tool length, see FIGS. 2-4 and 6-9, for increased/better/improved grip when held/moved to push against and pull away from the pins 400, 410. As a preferred example, the tool 20 comprises four ribs 25 distributed symmetrically around the envelope surface of the tool 20. The four ribs 25 are configured to secure holding of and simplify/improve making of the tool 20, in particular if plastic moulded, as the ribs transcend at their ends towards the first tool end 20A with a decreasing height radially relative the longitudinal axis of the tool towards the first pin 21. The four ribs 25 are configured to secure holding of and simplify/improve making the tool 20, in particular if plastic moulded, as these ribs transcend at their ends towards the second tool end 20B and the holder 23 corresponding ribs that abruptly ends in/at the plane of the surface 24.

[0064] In FIGS. 2-4, the tool 20 is shown with one detachable protection caps 22 assembled and configured for covering the second detachable pin 410 and/or the first fixed pin 21 when attached to the tool handle. In FIG. 6, the tool 20 is shown with its detachable protection cap 22 removed from its handle to reveal/expose and give access to the second detachable pin 410 for enabling its introduction into the hearing device 10 but could have at least two such caps 22. The detachable protection cap 22 is shown transparent but could in other aspects be opaque and/or partly transparent. In FIGS. 2-4, 6, and 7-9, the tool 20 is shown elongated with certain proportions, but could in other aspects have other proportions, e.g. be thicker or thinner for better/optimised grip and/or longer/shorter depending on the size of hearing device 10 and/or have a shorter or longer fixed pin 21 depending on the width of the hearing device that is necessary to protrude through when pushing out a locking pin 400, 410. The first fixed pin 21 is situated with its longitudinal axis in parallel with the longitudinal axis of tool 20, but could be somewhat inclined in relation thereto or even be partly bent/curved, but then would at least a sufficient length of the pin 21 have to be straight.

[0065] The second detachable pin 410 is situated with its longitudinal axis in parallel with the longitudinal axis of the tool 20 when attached to the tool handle but could also extend at least somewhat inclined in relation to the longitudinal axis of the tool 20 or even extend substantially perpendicular or perpendicular to the longitudinal axis of the tool 20 requiring another orientation and movement of the tool 20 when pushing in and out the first and second pins 400, 410. The present layout/structure/design of the hearing device 10 and location of its holes 180, 260 and the tool 20 give a stability and repeatability when aligning and moving these entities in relation to each other. The first fixed pin 21 and the second detachable pin 410 are situated at opposite ends 20A, 20B of the tool 20, i.e. its handle to provide a better and easier targeting of the holes 180, 260.

[0066] The hearing device 10 optionally includes a wireless communication unit, e.g. in the form of a radio chip connected to an antenna and configured to communicate wirelessly with other devices, e.g. in a hearing loss aiding network as is well-known in the art.

[0067] In one aspect, a system 1 comprises the hearing device 10 and a separate tool 20 with a handle. The tool 20 is adapted for enabling easy and quick exchange of the cover 200 of the hearing device 10 and thereby one or more filters 210 of the cover. Another aspect also relates to the tool itself. In one aspect, the finger or gear like joint achieved by the complementary coupling parts 140, 150, 240, 250 and the holes 180, 260 and the pins 400, 410 are applicable in other devices than hearing devices 10 where detachment of one part from another part, in an easy and reliable way, is required, e.g. when detaching or attaching a battery lid.

[0068] In some aspects, an item no 1 concerns a hearing device 10 comprising a hearing device housing 100. The hearing device housing 100 comprises at least one microphone 110 and a cover 200. The cover 200 comprises at least one filter 210 for covering an audio channel 120 for channeling sound between the surroundings and the at least one microphone arranged in the hearing device housing. The hearing device housing 100 comprises a control unit 300 and a power source 190. The hearing device housing 100 comprises a sealing 130 for sealing the interior of the hearing device housing against damp, moist, dirt and dust for protection of the control unit and the power source. The control unit 300 being operatively connected to the microphone 110 and the power source 190. The cover 200 and the hearing device housing 100 comprise complementary coupling parts 140, 150, 240, 250 for detachable connection such that said cover is exchangeable, wherein the hearing device housing 100 is kept sealed when the cover is disconnected from it. In some aspects, an item no 2 concerns a hearing device 10 according to item no 1, wherein the cover 200 is exchangeable to another type of cover. In some aspects, an item no 3 concerns a hearing device 10 according to item no 1 or item no 2, wherein the cover 200 is exchangeable to another cover comprising another type of filter 210. In some aspects, an item no 4 concerns a hearing device 10 according to item no 1 or item no 2, wherein the cover 200 and hearing device housing 100 are configured for creating a space therebetween such that at least a part of the filter 210 can be situated in the space created between cover and hearing device housing. In some aspects, an item no 5 concerns a hearing device 10 according to any preceding item, wherein at least a part of the filter 210 is provided in a void 220 in the cover 200. In some aspects, an item no 6 concerns a hearing device 10 according to item no 5, wherein at least a third of the volume of the filter 210 is provided in a void 220 in the cover 200. In some aspects, an item no 7 concerns a hearing device 10 according to item no 5 or no 6, wherein at least a third of the weight of the filter 210 is provided in a void 220 in the cover 200. In some aspects, an item no 8 concerns a hearing device 10 according to any preceding item, wherein the complementary coupling parts 140, 150, 240, 250 comprise snap coupling means configured for detachably connecting the cover 200 and the hearing device housing 100. In some aspects, an item no 9 concerns a hearing device 10 according to any preceding item, wherein the complementary coupling parts 140, 150, 240, 250 comprise an exchangeable locking pin 400, 410 configured for detachably connecting the cover 200 and the hearing device housing 100. In some aspects, an item no 10 concerns a hearing device 10 according to any preceding item, wherein the complementary coupling parts 140, 150, 240, 250 are configured for engaging an exchangeable locking pin 400, 410 configured for detachably connecting the cover 200 and the hearing device housing 100 by engaging and locking into the complementary coupling parts. In some aspects, an item no 11 concerns a hearing device 10 according to any preceding item, wherein the cover 200 comprises first complementary coupling parts 240, 250. In some aspects, an item no 12 concerns a hearing device 10 according to any preceding item, wherein the hearing device housing 100 comprises second complementary coupling parts 140, 150. In some aspects, an item no 13 concerns a hearing device 10 according to any preceding item, wherein the cover 200 comprises flanges and/or sides and/or walls 230 configured for fitting to the hearing device housing 100 such that at least a part 160 of the hearing device housing can be enclosed by said flanges and/or sides and/or walls. In some aspects, an item no 14 concerns a hearing device 10 according to any of items no 1 to 12, wherein the hearing device housing 100 comprises flanges and/or sides and/or walls 160 configured for fitting to the cover 200 such that at least a part 230 of the cover can be enclosed by said flanges and/or sides and/or walls. In some aspects, an item no 15 concerns a hearing device 10 according to any preceding item, wherein a sealing 130 is provided for watertight connection between the cover 200 and the hearing device housing 100. In some aspects, an item no 16 concerns a hearing device 10 according to item no 15, wherein the sealing 130 comprises silicone. In some aspects, an item no 17 concerns a hearing device 10 according to item no 11 or no 12, wherein the hearing device housing 100 comprises holes 180 being configured for alignment with similar holes 260 provided in the cover 200 such that said cover is able to be detachably locked with said hearing device housing by means of an exchangeable locking pin 400, 410 configured for engaging and locking into the holes 180, 260. In some aspects, an item no 18 concerns a hearing device 10 according to item no 13 or no 14, wherein the complementary coupling parts 140, 150, 240, 250 comprise holes 260 situated in the flanges and/or sides and/or walls 160, 230, said holes being configured for alignment with similar holes 180 provided in the at least one enclosed part such that said cover 200 is able to be detachably locked with said hearing device housing 100 by enabling for an exchangeable locking pin 400, 410 to engage and lock into the holes 180, 260. In some aspects, an item no 19 concerns a hearing device 10 according to item no 17 or no 18, wherein the holes 180, 260 and the exchangeable locking pin 400, 410 configured for detachably connecting said cover 200 and said hearing device housing 100 are made with a tolerance, such that the exchangeable locking pin is locked into at least one of the holes by a first friction force F.sub.1 adapted to keep the locking pin in place during normal use of the hearing device 10. In some aspects, an item no 20 concerns a hearing device 10 according to any of preceding items, wherein the complementary coupling parts 140, 150, 240, 250 comprise at least two sets of different coupling parts, one part being a hook-like member 250 and a thereto adapted member 150 such that movement between the cover 200 and hearing device housing 100 is limited when connected by the one part, and a second part 140, 240 complementing the one part 150, 250 such that the cover is detachably fixated when the cover and hearing device housing is connected by both the one part and the second part. In some aspects, an item no 21 concerns a hearing device 10 according to any of preceding items, wherein the cover 200 comprises an user interface 300 configured for controlling the power source 190 of the hearing device for its operation. In some aspects, an item no 22 concerns a hearing device 10 according to item no 21, wherein the user interface is a button 300 being movably connected to the cover 200 such that the button is operatively connected to the hearing device 10 and its power source 190 when the cover is detachably connected to the hearing device housing 100. In some aspects, an item no 23 concerns a hearing device 10 according to item no 22, wherein the button 300 is operatively connected to the hearing device 10 and its power source 190 via at least a part of the sealing 130 of the hearing device housing 100. In some aspects, an item no 24 concerns a hearing device 10 according to any of the preceding items, wherein the sealing 130 of the hearing device housing 100 is provided by a silicone membrane. In some aspects, an item no 25 concerns a tool 20 for exchanging a cover 200 of a hearing device 10 comprising a hearing device housing 100. The tool 20 comprising a handle having a first fixed pin 21 for pushing out a locking pin 400. The locking pin 400 detachably connecting the cover and hearing device housing. The handle further comprises a second detachable pin 410, which can replace the locking pin 400, thereby detachably mating the cover and hearing device housing. In some aspects, an item no 26 concerns a tool 20 for exchanging a cover 200 of a hearing device 10 according to item no 25, wherein said locking pin 400 and said second detachably pin 410 are essentially identical in dimension. In some aspects, an item no 27 concerns a tool 20 for exchanging a cover 200 of a hearing device 10 according to item no 25 or no 26, wherein the locking pin 400 and the second detachably pin 410 are made of the same material. In some aspects, an item no 28 concerns a system 1 comprising a hearing device 10 according to any of items no 9 to 24 and a tool 20 for exchanging a cover 200 of the hearing device. The tool 20 comprising a handle having a first fixed pin 21 for pushing out the locking pin 400. The locking pin 400 detachably mating the cover and the hearing device housing 100. The tool handle further comprising a second detachable pin 410 being configured for replacing the locking pin and thereby detachably mating cover and hearing device housing. In some aspects, an item no 29 concerns a system 1 comprising a hearing device 10 according to item no 28 when dependent on item no 20 or according to any of items no 21 to 24 when dependent on item no 20, wherein said second detachable pin 410 is attached to said tool handle by a second friction force F.sub.2. In some aspects, an item no 30 concerns a system 1 according to item no 29, wherein the second friction force F.sub.2 is lower than the first friction force F.sub.1. In some aspects, an item no 31 concerns a system 1 according to item no 29 or no 30, wherein the second friction force F.sub.2 is greater than the gravitational force acting on the locking pin 410. In some aspects, an item no 32 concerns a system 1 according to any of items no 28 to 31, wherein the handle of tool 20 comprises a holder and/or bushing 23 for the second detachable pin 410. In some aspects, an item no 33 concerns a system 1 according to item no 32, wherein the bushing 23 is made of plastic and/or rubber. In some aspects, an item no 34 concerns a tool 20 according to any of items no 25 to 27, wherein the second detachable pin 410 is attached to the tool handle by a second friction force F.sub.2. In some aspects, an item no. 35 concerns a tool 20 according to item no 34, wherein the second friction force F.sub.2 is lower than the first friction force F.sub.1. In some aspects, an item no. 36 concerns a tool 20 according to item no. 35, wherein the second friction force F.sub.2 is greater than the gravitational force acting on the second detachable pin 410. In some aspects, an item no. 37 concerns a tool 20 according to any of items no. 34 to 36, wherein the tool handle comprises a holder/bushing 23 for the second detachable pin 410. In some aspects, an item no 38 concerns a tool 20 according to any of items no 34 to 37, wherein the tool 20 comprises a detachable protection cap 22 configured for covering the second detachable pin 410 and/or the first fixed pin 21 when attached to the tool handle. In some aspects, an item no 39 concerns a tool 20 according to item no 38, wherein the detachable protection cap 22 is transparent. In some aspects, an item no. 40 concerns a tool 20 according to any of items no. 34 to no. 39, wherein the tool 20 is elongated. In some aspects, an item no. 41 concerns a tool 20 according to any of items no. 34 to 40, wherein the first fixed pin 21 is situated with its longitudinal axis in parallel with the longitudinal axis of the tool 20. In some aspects, an item no 42 concerns a tool 20 according to any of items no 34 to 41, wherein the second detachable pin 410 is situated with its longitudinal axis in parallel with the longitudinal axis of the tool 20 when attached to the tool handle. In some aspects, an item no. 43 concerns a tool 20 according to any of items no. 34 to no. 42, wherein the first fixed pin 21 and the second detachable pin 410 are situated at opposite ends 20A, 20B of the tool handle. The hearing device 10 has improved sealing and allows easy exchange of, for example, one or more covers 200 and/or one or more filters 210 and/or one or more sealings 130 in/on the hearing device.

[0069] Although particular features have been shown and described, it will be understood that they are not intended to limit the claimed invention, and it will be made obvious to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the claimed invention. The specification and drawings are, accordingly to be regarded in an illustrative rather than restrictive sense. The claimed invention is intended to cover all alternatives, modifications, and equivalents.

REFERENCE NUMERALS

[0070] 1: Hearing device system comprising a hearing device 10 with exchangeable audio filter 210 and a separate tool/handle 20 for exchanging said audio filter/-s. [0071] 10: Hearing device [0072] 20: Tool/Handle for exchanging locking pins. 20A: First tool/handle end. 20B: Second tool/handle end. 21: Fixed push pin on tool/handle. 22: Detachable cap/lid on tool/handle. 23: Holder/Receiver for locking pin. 24: Interface/Surface for engaging/pushing locking pin. 25: Outer radial ribs of the tool. [0073] 100: Hearing device housing. 110: Microphone. 120: Audio channel. 130: Sealing. 140: First coupling part of hearing device housing part. 150: Second coupling part of hearing device housing part. 160: Mating/Upper/Top interface/part/flanges/sides/walls of housing part. 170: Lower/Outer enclosure/part of housing part. 180: Locking hole/-s. 190: Power source, e.g. a battery. [0074] 200: Hearing device housing lid/cover. 210: Filter. 220: Void/Cavity for receiving/holding filter. 230: Flanges/Sides/Walls of cover. 240: First coupling member of hearing device housing cover. 250: Second coupling member of hearing device housing cover. 260: Locking hole/-s. [0075] 300: Control unit/Knob [0076] 400: First/Detachable/Exchangeable/Replaceable locking pin [0077] 410: Second/Detachable/Exchangeable/Replaceable pin for locking [0078] I: Symbolises directions of assembly and/or assembling/connecting/mounting entities [0079] II: Symbolises directions of disassembly and/or disassembling/removing/detaching entities [0080] F.sub.1: First friction force F.sub.1 adapted to keep a locking pin in place locked into at least one of the holes 180, 260 during normal use of the hearing device after assembly [0081] F.sub.2: Second friction force F.sub.2 adapted to provide detachable holding of the reserve/substitute locking pin 410 by means of the tool 20