Charging device for electrically charging a wireless earbud, connection device, plug device, and charging system
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- KAISER SASCHA
- Filing Date
- 2025-09-19
- Publication Date
- 2026-07-30
Smart Images
Figure EP2025076845_30072026_PF_FP_ABST
Abstract
Description
[0001] 275,969
[0002] Charging device for electrically charging a wireless earphone, connection device, plug device and charging system
[0003] Technical field
[0004] The invention relates to a charging device for electrically charging a wireless earphone, a connection device for connecting the charging device to a power source, a plug device and a charging system.
[0005] State of the art
[0006] Wireless earbuds allow you to connect them wirelessly to a device such as a smartphone, computer, television, stereo system, or similar device. This connection is established via a wireless communication interface, usually Bluetooth. Because the wireless interface eliminates the need for cables to restrict the user's movement, wireless earbuds offer greater user comfort compared to wired earbuds. For wireless operation, the earbuds are equipped with rechargeable batteries that need to be recharged regularly, depending on usage. Since the small size of such earbuds, especially in-ear models that are partially inserted into the ear canal, limits battery capacity, their operating time is correspondingly restricted.Mobile storage cases for holding and charging the earbuds do extend the operating time, but prevent the use of the wireless earbuds while charging, which limits user convenience. Description of the invention.
[0007] The invention aims to provide a charging device for electrically charging wireless earbuds, thereby extending the operating time of the earbuds and optimizing user comfort. Furthermore, the invention aims to provide a connection device and a plug device that enable charging of the charging device. Finally, the invention aims to provide a charging system that allows for easy handling when charging wireless earbuds.
[0008] A charging device is defined in claim 1. A connecting device is defined in claim 12. A plug device is defined in claim 14. A charging system is defined in claim 15. Dependent claims relate to specific embodiments.
[0009] The problem is solved by a charging device for electrically charging a wireless earphone, comprising a housing body in which a charging device is received, wherein the charging device comprises a battery storage, a first electrical interface and a second electrical interface, and the housing body has a receptacle into which a shaft of the wireless earphone can be inserted such that the first interface connects the battery storage of the charging device to a battery of the wireless earphone, and the housing body has a coupling section which can be inserted into an external charging unit and / or external coupling unit such that the battery storage of the charging device can be connected to a power source via the second interface.
[0010] The charging device is a portable charging accessory for a battery-powered, wireless earphone. In a paired configuration, where the charging device is connected to the wireless earphone, it allows the battery integrated into the earphone to be recharged, particularly while the earphone is in use, for example, while being worn in the user's ear. This significantly extends the operating time of the wireless earphone by providing the battery stored in the charging device. Preferably, a separate charging device can be provided for each wireless earphone; that is, one charging device can be paired with the right earphone and another with the left earphone. The charging devices are preferably designed to be interchangeable between the left and right earphones.
[0011] The housing body can preferably be designed as a slot into which the wireless earphone is inserted by its stem for pairing with the charging device. This allows for easy handling of the charging device, enabling quick pairing and unpairing of the charging device with the earphone, particularly during use.
[0012] The housing body can be designed as a one-piece or a multi-piece housing. Advantageously, the housing body has dimensions that allow the charging device to be used while the wireless earbud is in use. The weight of the charging device is preferably designed to ensure that the wireless earbud is held securely in the user's ear while the charging device is paired with the wireless earbud.
[0013] The battery is integrated into the housing and can comprise one or more battery cells. For example, the battery can be located within the coupling section. The battery is specifically a rechargeable battery, i.e., an accumulator. The battery's capacity can be matched to the capacity of the wireless earbud's battery, for example, to extend the earbud's operating time. The battery's capacity can be less than, greater than, or equal to the capacity of the wireless earbud's battery.
[0014] The first electrical interface and / or the second electrical interface can each comprise or be formed by at least one electrical contact. By pairing the charging device with the wireless earphone, the electrical contact of the first interface can be connected to a corresponding electrical contact of the earphone to electrically connect the charging device's battery to the earphone's battery. By pairing the charging device with the external charging unit and / or external coupling unit, the electrical contact of the second interface can be connected to a corresponding electrical contact of the external charging unit and / or external coupling unit to electrically connect the charging device's battery to a power source for charging.
[0015] Alternatively, the first and / or second interface can also be configured for wireless power transfer, in particular inductive power transfer. With this design, direct contact between electrical contact elements can be eliminated. This can result in a reduction in the number of components and / or a waterproof design of the charging device.
[0016] The external charging unit is preferably a storage case for holding and charging the wireless earbuds. Such a storage case can have a design specifically adapted to the charging device. Advantageously, the storage case is a charging case that belongs to the wireless earbuds. In particular, the charging device can be designed in such a way that it can be inserted into and charged in such a storage case, interchangeably with the wireless earbuds.
[0017] The external coupling unit is, for example, a charging cable adapted to the charging device in order to connect the charging device to a power source for charging.
[0018] Further development of the charging device may provide that the charging device is set up to be pairable with the earphone during use and to charge the earphone's battery.
[0019] By allowing the earbud's battery to be charged while in use, the charging device significantly extends operating time without requiring the earbud to be placed in a dedicated charging case. The case's design allows the earbud stem to be inserted while the earbud is being worn, facilitating easy pairing and unpairing, as well as convenient handling for the user.
[0020] In a further embodiment of the charging device, the housing body can have an insertion opening through which the stem of the wireless earphone can be at least partially inserted into the receptacle formed in the housing body. The receptacle preferably has a substantially cylindrical inner contour. This allows the stem of the wireless earphone, which is also usually substantially cylindrical, to be securely inserted and held in the receptacle. For this purpose, the receptacle can have a slightly larger inner diameter than the outer diameter of the stem of the wireless earphone. Advantageously, the receptacle can include a magnetic unit by which the stem of the wireless earphone inserted into the receptacle is magnetically held in the receptacle.
[0021] A further development of the loading device may provide that the receptacle has an inner diameter of at most 10 mm, preferably at most 8 mm, and at least 4 mm, preferably at least 6 mm.
[0022] Such an inner diameter can ensure a slight clearance between an inner wall of the receptacle and the stem of the wireless earphone inserted into the receptacle, thus preventing tilting or the like when inserting the stem into the receptacle.
[0023] The insertion depth of the receptacle can be at most 15 mm, preferably at most 12 mm, and at least 3 mm, preferably at least 5 mm.
[0024] Such an insertion depth of the receptacle can ensure that the stem of the wireless earphone is securely inserted and held in the receptacle.
[0025] In a further advantageous embodiment of the charging device, the first interface of the charging device can be provided within the receptacle, wherein the first interface can be electrically connected in a coupling configuration to an electrical contact on the stem of the wireless earphone. The first interface can be arranged at any position within the receptacle corresponding to the electrical contact of the wireless earphone inserted into the receptacle. Preferably, the first interface of the charging device can be arranged on a bottom section of the receptacle. In this way, the first interface can be connected to an electrical contact provided on an end section of the stem of the wireless earphone.
[0026] In an advantageous embodiment of the charging device, the coupling section of the housing body can have a shaft-shaped outer contour, which essentially corresponds to a shaft shape that can be inserted into the receiving of the housing body.
[0027] Advantageously, the outer contour of the coupling section has a substantially cylindrical shape. Particularly advantageous is the outer contour of the coupling section being adapted to, or corresponding to, the outer contour of the wireless earphone shaft that can be inserted into the charging device's receptacle. This allows for easy integration of the charging device into an existing wireless earphone charging system. Specifically, this enables the charging device to be inserted into the proprietary storage case for holding and charging the earphones, and to be charged by the case itself, instead of the wireless earphones.
[0028] A further development of the charging device may provide that the shaft-shaped coupling section of the housing body has an outer diameter of at most 9 mm, preferably at most 7 mm, and at least 3 mm, preferably at least 5 mm. Preferably, the length of the shaft-shaped coupling section of the housing body may be at most 15 mm, preferably at most 12 mm, and at least 3 mm, preferably at least 5 mm.
[0029] With such an outer diameter and / or such a length of the shaft-shaped coupling section, it can be designed essentially according to the outer contour of the shaft of the wireless earphone that can be inserted into the charging device, so that the charging device can be inserted into the proprietary storage case of the earphones instead of the wireless earphones.
[0030] In a further development of the charging device, the second interface of the charging device can be provided at the coupling section.
[0031] Preferably, the second interface of the charging device can be arranged at an end section of the shaft-shaped coupling section. The second interface can be designed as an electrical contact that extends, at least partially, in a ring-like fashion along an end face of the coupling section. This ensures reliable contact between the second interface and an electrical contact of the external charging unit and / or external coupling unit.
[0032] Advantageously, the housing body of the charging device can have at least two housing sections, wherein the receptacle for the shaft of the wireless earphone is formed in one of the at least two housing sections and the other housing section forms the coupling section that can be inserted into the external charging unit and / or external coupling unit.
[0033] Preferably, the at least two housing sections each form cylindrical sections of the housing body. The at least two housing sections can be arranged adjacent to each other in one direction of extension, preferably along a common central axis. The at least two housing sections can be formed integrally from the housing body. Likewise, the at least two housing sections can each be formed by one or more housing components which, when combined, form the housing body.
[0034] In particular, the housing section forming the coupling section has a smaller outer diameter than the housing section in which the receptacle is formed. Preferably, the insertion opening of the receptacle is provided on an end face of one housing section that is opposite the housing section that is opposite the coupling section.
[0035] The overall length of the housing body can, for example, be at most 30 mm, preferably at most 25 mm, and / or at least 10 mm, preferably at least 15 mm. The maximum outer diameter of the housing section in which the receptacle is formed can, for example, be at most 15 mm, preferably at most 12 mm, and / or at least 5 mm, preferably at least 7 mm.
[0036] Another design of the charging device may also provide that the receptacle for the shaft of the wireless earphone and the coupling section that can be inserted into the external charging unit and / or external coupling unit are located opposite each other on the housing body.
[0037] In particular, the insertion opening of the receiver can be positioned opposite the coupling section that can be inserted into the external charging unit and / or external coupling unit. This allows for a compact design of the charging device. The problem is further solved by a connection device for connecting the charging device, according to one of the previously described embodiments, to a power source. The connection device comprises at least one first coupling unit, at least one second coupling unit, and at least one connecting line that electrically connects the at least one first coupling unit and the at least one second coupling unit to each other.The first coupling unit has a first coupling receptacle into which the coupling section of the charging device can be inserted in such a way that an electrical contact of the first coupling unit can be connected to the second interface of the charging device, and the second coupling unit has a second coupling receptacle into which a coupling shaft of a plug device can be inserted in such a way that an electrical contact of the second coupling unit can be connected to an electrical contact of the plug device.
[0038] In particular, the connecting device is a connecting cable for connecting at least one charging device to a power source. Advantageously, the connecting device has two first coupling units, each for charging a charging device. Preferably, the two first coupling units are each connected to a common second coupling unit by a connecting cable.
[0039] Further development of the connection device can also provide that the first coupling receptacle of the at least one first coupling unit and the second coupling receptacle of the at least one second coupling unit are essentially identical in construction, and / or that one design of the coupling receptacles essentially corresponds to a design of the charging device receptacle. This allows for flexible use of the connection device, in which the first and second coupling receptacles can be used interchangeably due to their identical or essentially identical design. This can, for example, allow the charging device and / or the plug assembly to be inserted into both the first and the second coupling receptacle. The identical design of the coupling units can also optimize the manufacturing costs of the connection device.
[0040] Furthermore, the problem is solved by a plug device for connecting the connection device according to one of the previously described embodiments to an energy source, comprising a plug housing with a plug unit, wherein the plug housing has a coupling shaft which can be inserted into at least one of the coupling receptacles of the coupling units of the connection device in such a way that an electrical contact of the plug unit can be connected to the electrical contact of the coupling unit.
[0041] The design of the connector housing's coupling shaft is essentially identical in construction to the design of the charging device's coupling section and / or essentially corresponds to a design of the charging device's coupling section. This allows the connector unit to be coupled to the coupling unit in the same way as the charging device to the coupling unit. In this way, both increased flexibility and optimized handling can be achieved.
[0042] The connector unit can include any connector suitable for coupling with a power source. Advantageously, the connector unit's plug can be a USB interface, such as a USB-A, USB-B, USB-C, or similar interface. Alternatively, the connector unit's plug can also be a proprietary interface from any manufacturer. For example, the connector unit's plug could be a Lightning connector from Apple.
[0043] The advantages described above are also realized by a charging system for electrically charging a wireless earphone. Such a charging system comprises at least one charging device according to one of the embodiments described above, a connecting device according to one of the embodiments described above, and at least one plug device according to the embodiment described above.
[0044] In particular, the charging system comprises two charging devices, allowing two wireless earbuds to be charged simultaneously using one of the charging devices each. Furthermore, the charging system preferably includes two connector units, each with a different interface for connecting to a power source. Specifically, the connector of one unit can be a USB interface, such as a USB-A, USB-B, USB-C, or similar interface, while the connector of the other unit can be an Apple Lightning interface. This allows for a high degree of compatibility and flexibility within the charging system.
[0045] Brief description of the drawings
[0046] Further features and advantages of a device, a use, and / or a method will become apparent from the following description of embodiments with reference to the accompanying drawings. Of these drawings, Fig. 1 shows a perspective view of an embodiment of two loading devices according to the disclosure;
[0047] Fig. 2 shows a top view of the loading device in Fig. 1;
[0048] Fig. 3 shows a view from below of the loading device in Fig. 1;
[0049] Fig. 4 shows a sectional view of the charging device in a coupling configuration for charging a wireless earphone;
[0050] Fig. 5 shows a schematic view of an embodiment of a connecting device according to the disclosure;
[0051] Fig. 6 shows a perspective view of two connector devices according to the disclosure in different embodiments.
[0052] Description of execution forms
[0053] Identical reference symbols listed in different figures name identical, corresponding, or functionally similar elements.
[0054] Fig. 1 shows a perspective view of an embodiment of two charging devices 10 according to the disclosure for electrically charging wireless earphones. The two charging devices 10 are identical in construction and can charge a pair of wireless earphones simultaneously. The following descriptions are based on one charging device 10 and apply equally to the other. The charging device 10 is an accessory component that allows the battery of a wireless earphone to be charged while it is in use. For this purpose, the charging device 10 can be paired with the wireless earphone while it is in use, i.e., while the earphone is being worn in the user's ear. The charging device 10 allows the operating time of the wireless earphone to be extended without interruption.In particular, it is not necessary to place the wireless earbud 10 in a separate storage case to charge the earbud's battery.
[0055] The charging device 10 has a housing body 11 that forms two interconnected housing sections 12 and 13. The housing body 11 can be formed from a single integral housing element or from multiple housing elements. The two housing sections 12 and 13 each have a cylindrical basic shape, with the first housing section 12 having a larger outer diameter than the second housing section 13. Preferably, the two housing sections 12 and 13 are aligned with a common central axis.
[0056] The housing body 11 can have a total length of at most 30 mm, preferably at most 25 mm, and / or at least 10 mm, preferably at least 15 mm. A maximum outer diameter of the housing body 11, i.e., of the first housing section 12, can be at most 15 mm, preferably at most 12 mm, and / or at least 5 mm, preferably at least 7 mm.
[0057] The first housing section 12 has a receptacle 14 for receiving a stem 15 of a wireless earphone 16, as shown schematically in the sectional view of the charging device 10 in Fig. 4. The second housing section 13 forms a stem-shaped coupling section 17, which can be inserted into an external charging unit and / or an external coupling unit 32 to charge a battery storage unit 18 of the charging device 10, as shown in Fig. 4, by means of an external energy source 31.
[0058] An insertion opening 20 is formed on an end face 19 of the housing body 11, through which the shaft 15 of the wireless earphone 16 is inserted into the receptacle 14 with one end section forward for coupling with the charging device 10.
[0059] The receptacle 14 has an inner diameter I of at most 10 mm, preferably at most 8 mm, and at least 4 mm, preferably at least 6 mm, for receiving the shaft 15 of the wireless earphone 16. The insertion depth E of the receptacle 14 is at most 15 mm, preferably at most 12 mm, and at least 3 mm, preferably at least 5 mm. The shaft 15 of the wireless earphone 16, which can be inserted into the receptacle 14, can, for example, have a substantially cylindrical shape and an outer diameter of approximately 6 mm and a length of approximately 15 mm. The shaft 15 of the wireless earphone 16 can thus be partially inserted into the receptacle 14 of the charging device 10.
[0060] As can be seen in Fig. 4, the charging device 10 comprises a charging unit 21 which is received in the housing body 11. The charging unit 21 comprises the battery storage 18 as well as a first electrical interface 22 and a second electrical interface 23.
[0061] The first electrical interface 22 of the charging device 21 is arranged within the receptacle 14, as shown in Fig. 2, which shows a top view of the charging device 10, and in Fig. 4. The first electrical interface 22 comprises two electrical contact elements 24, which are arranged on a bottom section 28 of the receptacle 14.
[0062] In a coupling configuration 25 of the charging device 10 with the wireless earphone 16 shown in Fig. 4, the two contact elements 24 are electrically connected to an electrical contact 26 on the shaft 15 of the wireless earphone 16, whereby the battery storage 18 of the charging device 10 is electrically connected to the battery of the earphone 16 (not shown) in order to charge it.
[0063] The charging device 21 can include a controller 27 that controls the charging process for charging the battery unit 18 and / or the battery of the wireless earphone 16. For example, the controller 27 can be configured to start the charging process when the battery unit 18 and / or the battery of the earphone 16 falls below a defined charge level, and / or to stop the charging process when the battery unit 18 and / or the battery of the earphone 16 exceeds or reaches a defined charge level.
[0064] As previously mentioned, the second housing section 13 forms the shaft-shaped coupling section 17, which can be inserted into an external charging unit and / or an external coupling unit 32. In particular, the coupling section 17 is at least partially formed by the housing body 11. The coupling section 17 has a shaft-shaped outer contour that essentially corresponds to the shaft shape of the shaft 15 of the wireless earphone 16, which can be inserted into the receptacle 14. In other words, the outer contour of the second housing section 13 has a cylindrical basic shape.
[0065] The outer diameter A of the shaft-shaped coupling section 17 is at most 9 mm, preferably at most 7 mm, and at least 3 mm, preferably at least 5 mm. The length L of the shaft-shaped coupling section 17 is at most 15 mm, preferably at most 12 mm, and at least 3 mm, preferably at least 5 mm.
[0066] The second interface 23 of the charging device 21 is arranged at an end section 29 of the shaft-shaped coupling section 17. As can be seen in Fig. 3, which shows a view from below of the charging device 10, the second interface 23 is designed as a two-part electrical contact. This two-part electrical contact extends in an interrupted ring shape along an outer end face of the end section 29 of the coupling section 17.
[0067] Fig. 5 shows a schematic view of an embodiment of a connection device 30 according to the disclosure for connecting the previously described charging device 10 to an external energy source 31.
[0068] The connection device 30 comprises two first coupling units 32, a second coupling unit 33, and connecting lines 34 by which the first coupling units 32 are electrically connected to the second coupling unit 33. The connecting lines 34 are preferably flexible power cables of any length and thickness.
[0069] The first coupling units 32 each have a housing 35 in which a first coupling receptacle 36 is formed. The first coupling receptacle 36 is configured such that the coupling section 17 of the charging device 10 can be inserted into it, so that an electrical contact (not shown) within the first coupling receptacle 36 can be connected to the second interface 23 of the charging device 10. Preferably, the first coupling receptacle 36 of the first coupling units 32 has the same configuration as the receptacle 14 of the charging device 10.
[0070] The second coupling unit 33 has a housing 35 in which a second coupling receptacle 37 is formed. The second coupling receptacle 37 is configured such that a coupling shaft 43 of a subsequently described plug device 38 can be inserted into it, so that an electrical contact (not shown in detail) within the second coupling receptacle 37 can be connected to an electrical contact 42 on the coupling shaft 43 of the plug device 38. Preferably, the second coupling receptacle 37 of the second coupling unit 33 has the same configuration as the first coupling receptacle 36 or the receptacle 14 of the charging device 10.
[0071] Fig. 6 shows a perspective view of two connector devices 38 according to the disclosure, representing two different embodiments. The connector devices 38 are designed to connect the connection device 30 shown in Fig. 5 to the power source 31. Such a power source 31 can be, for example, an end device, e.g., a smartphone, tablet, notebook, or the like, or a power supply for a wall socket of a power grid.
[0072] The connector assembly 38 has a connector housing 39 in which a connector unit 40 is received. The connector unit 40 comprises a connector 41, which can be configured as any connector for connecting to the power source 31. According to the embodiments shown in Fig. 6, the connector 41 of the left connector unit 40 is configured as a USB interface, in particular a USB-C interface, and the connector 41 of the right connector unit 40 is configured as a proprietary interface of a manufacturer, in particular a Lightning interface of the manufacturer Apple. It is understood that the connector 41 can also be configured as any other connector suitable for being coupled to a power source.
[0073] An electrical device is housed within the connector housing 39, which connects the connector 41 to an electrical contact 42. The electrical contact 42 is arranged at an end section of a coupling shaft 43 of the connector assembly 38. The electrical contact 42 is designed as a two-part electrical contact that extends in an interrupted ring shape along an outer end face of the end section of the coupling shaft 43.
[0074] The coupling shaft 43 is formed by the plug housing 39, wherein the design of the coupling shaft 43 preferably corresponds to the design of the coupling section 17 of the charging device 10 .
[0075] In this way, the coupling shaft 43 is designed to couple the plug device 38 with the second coupling unit 33 of the connection device 30 by inserting the coupling shaft 43 into the second coupling receptacle 37 of the second coupling unit 33 of the connection device 30. The electrical contact 42 on the coupling shaft 43 of the plug device 38 is thereby connected to the electrical contact (not shown) of the second coupling unit 33.
[0076] A pair of charging devices 10 according to Figures 1 to 4, the connecting device 30 according to Figure 5, and at least one of the plug devices 38 according to Figure 6 together form a charging system which, on the one hand, enables the wireless earphone 16 to be charged by the charging device 10, and on the other hand, allows the battery storage 18 of the charging device 10 to be charged by the energy source 31. It is apparent to those skilled in the art that individual features described in different embodiments can also be implemented in a single embodiment, provided they are not structurally incompatible. Likewise, various features described within a single embodiment can also be provided individually or in any suitable subcombination in several embodiments.
Claims
REQUIREMENTS 1. Charging device (10) for electrically charging a wireless earphone (16), comprising a housing body (11) in which a charging device (21) is received, wherein the charging device (21) comprises a battery storage (18), a first electrical interface (22) and a second electrical interface (23), and the housing body (11) has a receptacle (14) into which a shaft (15) of the wireless earphone (16) can be inserted such that the first interface (22) connects the battery storage (18) of the charging device (21) to a battery of the wireless earphone (16), and the housing body (11) has a coupling section (17) which can be inserted into an external charging unit and / or external coupling unit (32) such that , that the battery storage ( 18 ) of the charging device ( 21 ) can be connected to an energy source ( 31 ) via the second interface ( 23 ).
2. Charging device according to claim 1, wherein the charging device ( 21 ) is further configured to be pairable with the earphone ( 16 ) during use of the earphone ( 16 ) and to charge the battery of the earphone ( 16 ).
3. Charging device according to claim 1 or 2, wherein the housing body ( 11 ) further comprises an insertion opening ( 20 ) through which the shaft ( 15 ) of the wireless earphone ( 16 ) can be inserted at least partially into the receptacle ( 14 ) formed in the housing body ( 11 ).
4. Charging device according to one of the preceding claims, wherein the receiving (14) further comprises an inner diameter (I) of at most 10 mm, preferably at most 8 mm, and at least 4 mm, preferably at least 6 mm, and / or an insertion depth (E) of at most 15 mm, preferably at most 12 mm, and at least 3 mm, preferably at least 5 mm.
5. Charging device according to one of the preceding claims, wherein the first interface (22) of the charging device (21) is further provided within the receptacle (14), preferably on a bottom section (28) of the receptacle (14), wherein in a coupling configuration (25) the first interface (22) is electrically connectable to an electrical contact (26) on the shaft (15) of the wireless earphone (16).
6. Charging device according to one of the preceding claims, in which furthermore the coupling section (17) of the housing body (11) has a shaft-shaped outer contour which essentially corresponds to a shaft shape that can be inserted into the receptacle (14) of the housing body (11).
7. Charging device according to claim 6, wherein the shaft-shaped coupling section (17) of the housing body (11) further comprises an outer diameter (A) of at most 9 mm, preferably at most 7 mm, and at least 3 mm, preferably at least 5 mm, and / or a length (L) of at most 15 mm, preferably at most 12 mm, and at least 3 mm, preferably at least 5 mm.
8. Charging device according to one of the preceding claims, wherein the second interface (23) of the charging device (21) is further provided on the coupling section (17), preferably on an end section (29) of the shaft-shaped coupling section (17).
9. Charging device according to one of the preceding claims, in which the coupling section (17) is furthermore formed at least sectionally by the housing body (11).
10. Charging device according to one of the preceding claims, in which the housing body (11) further comprises at least two, preferably cylindrical, housing sections (12, 13), wherein the receptacle (14) for the shaft (15) of the wireless earphone (16) is formed in one of the at least two housing sections (12) and the other housing section (13) forms the coupling section (17) that can be inserted into the external charging unit and / or external coupling unit (32).
11. Charging device according to one of claims 3 to 10, in which the receptacle (14) for the shaft (15) of the wireless earphone (16), in particular the insertion opening (20) of the receptacle (14), and the coupling section (17) that can be inserted into the external charging unit and / or external coupling unit (32) are provided opposite each other on the housing body (11).
12. Connecting device (30) for connecting the charging device (10) according to one of claims 1 to 11 to a power source (31), comprising at least one first coupling unit (32), at least one second coupling unit (33) and at least one connecting line (34) which electrically connects the at least one first coupling unit (32) and the at least one second coupling unit (33) to each other, wherein the first coupling unit (32) has a first coupling receptacle (36) into which the coupling section (17) of the charging device (10) can be inserted such that an electrical contact of the first coupling unit (32) can be connected to the second interface (23) of the charging device (10), and the second coupling unit (33) has a second coupling receptacle (37). , into which a coupling shaft ( 43 ) of a plug device ( 38 ) can be inserted in such a way ,that an electrical contact of the second coupling unit ( 33 ) can be connected to an electrical contact (42 ) of the plug device (38 ).
13. Connecting device according to claim 12, in which furthermore the first coupling receptacle (36) of the at least one first coupling unit (32 ) and the second coupling receptacle (37 ) of the at least one second coupling unit (33) are essentially identical in construction and / or an embodiment of the coupling receptacles (36, 37 ) essentially corresponds to an embodiment of the receptacle ( 14 ) of the charging device ( 10 ).
14. Connector device (38) for connecting the connection device (30) according to claim 12 or 13 to a power source (31), comprising a connector housing (39) with a connector unit (40), wherein the connector housing (39) has a coupling shaft (43) which can be inserted into at least one of the coupling receptacles (36, 37) of the coupling units (32, 33) of the connection device (30) such that an electrical contact (42) of the connector unit (40) can be connected to the electrical contact of the coupling unit (32, 33).
15. Charging system comprising at least one charging device ( 10 ), in particular two charging devices ( 10 ), according to one of claims 1 to 11, a connecting device (30) according to claim 12 or 13 and at least one plug device (38 ) according to claim 14.