WO2018161124A1

WO2018161124A1 - An audio playback system with charging mechanism and method of use

Info

Publication number: WO2018161124A1
Application number: PCT/AU2018/050213
Authority: WO
Inventors: Lenin Lambert; Reeve Lambert
Original assignee: Lenin Lambert; Reeve Lambert
Priority date: 2017-03-10
Filing date: 2018-03-09
Publication date: 2018-09-13
Also published as: AU2018229687A1

Abstract

The present invention relates to an audio playback system including at least one earbud including a first charging engagement portion. The audio play back device further including an audio playback device including a first battery and at least one recess for receiving at least a portion of the at least one earbud. The recess including a corresponding second charging engagement portion for engaging the first charging engagement portion of the at least one earbud; wherein when at least a portion of the at least one earbud is received into the recess, the first charging engagement portion and the corresponding second charging engagement portion engage such that charge from the first battery of the audio playback device is used to charge the at least one earbud.

Description

AN AUDIO PLAYBACK SYSTEM WITH CHARGING MECHANISM AND METHOD OF USE

TECHNICAL FIELD

[0001] The present invention relates to an audio play back system with charging mechanism and method of use. More specifically, a wearable audio playback system including an audio play back device and earbuds which are charged when mounted to the audio playback device.

BACKGROUND ART

[0002] Currently, there are many portable music systems available on the market. Such systems come in various shapes and sizes, for example, in the form of media players, mobile telephones, smart watches etc. and typically include a device for playing music coupled with a pair of earbuds or earphones for listening to the music.

[0003] One problem with the portable music systems mentioned above is that they are not suitable to be used in all types of environments, in particular, in environments which may include extreme conditions, such as in the sea or surf while a user is surfing, in the air while a user is hang gliding or sky diving, or in the snow while a user is snow boarding, where earbuds or earphones may be more prone to being dislodged from a user's ears, being broken or deteriorating more rapidly than if used in typical everyday conditions.

[0004] Another problem with the portable music systems mentioned above is that such systems typically include earbuds that directly connected to the device using a cord. Such a cord may get in the way of a user when the user is performing activities or taking part in sporting activates which require movement of the body and/or limbs which may become tangled with the cord.

[0005] Another problem with the portable music systems mentioned above is that such systems require an accessory, for example a USB cable and/or charger, in order to charge wireless earbuds once the internal battery or batteries become depleted. This means that once the media play or earbuds run out of power, the media play and/or earbuds must be connected to a mains power source in order to recharge the battery or batteries in order for the music system to become fully functional once again.

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

SUMMARY OF INVENTION

[0007] The present invention is directed to an audio playback system, which may at least partially overcome at least one of the abovementioned disadvantages or provide the consumer with a useful or commercial choice.

[0008] With the foregoing in view, the present invention in one form, resides broadly in an audio playback system including:

at least one earbud including a first charging engagement portion; and,

an audio playback device including:

a first battery, and

at least one recess for receiving at least a portion of the at least one earbud, the recess including a corresponding second charging engagement portion for engaging the first charging engagement portion of the at least one earbud; and,

wherein when at least a portion of the at least one earbud is received into the recess, the first charging engagement portion and the corresponding second charging engagement portion engage such that charge from the first battery of the audio playback device is used to charge the at least one earbud.

[0009] Although the present invention is described in terms of earbuds, it will be understood that this terms is used to refer to any suitable device adapted to be at least partially inserted into a user's ear canal, and through which sound is transmitted. For instance, the term "earbud" as used herein may refer to earbuds, earphones, in-canal earphones, noise cancelling earphones and the like, or any suitable combination thereof.

[0010] Advantageously, the at least one earbud may be charged when mounted and/or secured to the audio playback device without use of an additional charger or charging device.

[0011] The at least one earbud may be of any suitable form. In a preferred embodiment of the invention, however, the at least one earbud may be a wireless earbud. Advantageously, no cords between the at least one earbud and the audio play back device interfere with a user when in use.

[0012] In some embodiments of the invention, the at least one earbud may be waterproof or water-resistant. Advantageously, a user may listen to audio material (such as music, radio transmissions, audio books, podcasts or the like, or any suitable combination thereof) when the at least one earbud is being used by a user in wet environments or wet conditions. Thus, it is envisaged that the user may use the at least one earbud while engaging in water sports or pursuits (such as swimming, sailing, canoeing or kayaking, surfing, diving or the like) or when in wet environments (such as in inclement weather, when on boats, ships or other watercraft, in a shower or bath, or the like).

[0013] The at least one earbud may include a body. The body may be fabricated out of any suitable material. However, it is envisioned that the body would be made out of plastic or some form of composition material that is waterproof or water-resistant.

[0014] Preferably, the first charging engagement portion may be located on the body. A person skilled in the art would understand that the first charging engagement portion may be located at any position on the body so long as the first charging engagement portion is able to engage the corresponding second engagement portion on the audio playback device. In a preferred embodiment of the invention, the first charging engagement portion may extend outwardly from the body of the at least one earbud. The first charging engagement portion may extend outwardly from the body in any suitable direction and for any suitable distance. Thus, it is envisaged that the first charging engagement portion may comprise a protrusion. The protrusion may be retractable. In alternative embodiments, the first charging engagement portion may form part of an outer wall of the body. The first charging engagement portion may be of any suitable size or shape and may be fabricated from any suitable material. In a preferred embodiment of the invention, however, the first charging engagement portion may be fabricated from a relatively corrosion-resistant material. In addition, it may be preferred that the first charging engagement portion may be fabricated from a relatively electrically-conductive material. In a specific embodiment of the invention, the first charging engagement portion may be in the form of a stainless steel protrusion.

[0015] In some embodiments, the body may include a first body portion for locating the at least one earbud relative to a user's ear and/or the at least one audio device. The first body portion may be any suitable size or shape suitable for being supported by a user's ear. In some embodiments, the first body portion may be at least partially received within the at least one recess of the audio device and/or a user's ear. In some embodiments, the first body portion may be substantially disc shaped. The first body portion may be the main portion of the at least one earbud.

[0016] In some embodiments, the body may include a second body portion for further locating the at least one earbud relative to a user's ear. The second body portion may be of any particular size or shape. In some embodiments, the second body portion is substantially elongate and extends in a direction along the user's face when in use. In particular, the second body portion may extend substantially down the side of a user's face when in use.

[0017] In some embodiments, the body may include a third body portion for extending at least partially into a user's ear and/or into the at least one recess of the audio device. The third body portion may extend from any suitable location from the first body portion relative to the second body portion, and at any suitable angle relative to the second body portion. For instance, the third body portion may extend outwardly from the first body portion at an angle of between about 45° and about 135° to the first body portion. More preferably, the third body portion may extend outwardly from the first body portion at an angle of between about 70° and about 110° to the first body portion. However, it is preferred that the third body portion extends outwardly from the first body portion in a direction substantially 90° the second body portion.

[0018] In some embodiments, the first charging engagement portion may extend from a portion of the body which at least partially extends into the at least one recess of the audio device when the at least one earbud is mounted to the audio playback device. In some embodiments, the first charging engagement portion may be located on the first body portion or the third body portion.

[0019] The at least one earbud may further include a first portion of a locking mechanism for engaging a corresponding second portion of the locking mechanism located on the audio playback device. In some embodiments, the first portion of the locking mechanism may be located on the body portion of the at least one earbud. In some embodiments, the first portion of the locking mechanism may be located on the first body portion or the second body portion of the at least one earbud.

[0020] In some embodiments, the first portion of the locking mechanism may be a male portion and the second portion of the locking mechanism may be a corresponding female portion. A person skilled in the art would understand that the male portion may alternatively be located on the audio playback device and the female portion on the at least one ear bud. The male and female portions may engage in any suitable manner (friction fitting, screw-thread, connector such as a pin or the like) but that it is preferred that the male and female portions connect to one another via a rotational engagement. In some embodiments, the male and female locking portions may be a pair of corresponding thread portions. The thread portions may connect in a manner such that the at least one earbud is drawn into the at least one recess when rotated in a first direction and released from the at least one recess when rotated in a second direction.

[0021] In other embodiments, the male portion may be in the form of a protrusion, projection or the like. In a preferred embodiment of the invention, however, the male portion may be in the form of a protruding ridge. In some embodiments, the protruding ridge may extend at least partially about an outer surface of the third body potion at the at least one earbud such that rotation of the at least one earbud when engaged with an opening of the at least one recess allows at least a portion of the at least one earbud to enter the recess of the audio device. In some embodiments, the protruding ridge may extend at least partially about an outer surface in a spiral-like pattern or slot which may lock in after rotation for example through approximately 45 degrees.

[0022] In some embodiments, the corresponding female portion may be in the form of a recess. The recess of the corresponding female portion may extend at least partially about an inner surface of the at least one recess of the audio playback device. In some embodiments, the recess of the female portion may extend at least partially about an inner surface of the at least one recess of the audio playback device in a spiral-like pattern complimentary to the corresponding male portion such that the male portion may rotate therein. In some embodiments, once the first and second portions of the locking mechanism fully engage a user may feel a tactile 'click' or other tactile locking/securing prompt which indicates that the at least one earbud has successfully been secured to the audio playback device. Once in the secured position, the earbud may be charging.

[0023] The at least one earbud may include a second battery. The second battery may be any suitable battery type. In preferred embodiments, the second battery is a lithium battery. Preferably, the second battery is a rechargeable battery. In some embodiments, the second battery is located within the first body portion of the at least one earbud. A person skilled in the art would understand that the second battery may be located in any other portion of the earbud other than the first body portion.

[0024] The at least one earbud may include a receiving and/or transmitting portion. Any suitable receiving and/or transmitting portion may be provided, such as, but not limited to, one or more antennae. The purpose of the receiving and/or transmitting portion may be to a receiving and/or transmitting portion. It is envisaged that the receiving and/or transmitting portion may be adapted to receive signals from the audio playback device and optionally transmit signals to the audio playback device. In this way, the at least one earbud may be adapted to receive music or the like from the audio playback device. In a preferred embodiment of the invention, the at least one earbud may be provided with a wireless antenna. The wireless antenna may be any suitable wireless antenna known in the art suitable for being located within the body. In some embodiments, the wireless antenna is located at least partially within, towards or at the end of the second body portion. A person skilled in the art would understand that the antenna may be located in any other portion of the earbud other than the second portion so long as the wireless antenna may form a connection with the audio playback device.

[0025] The at least one earbud may include an attachment portion for mounting a sleeve to the body portion. The sleeve may be fabricated of any suitable material suitable for moulding to a user's inner ear. In some embodiments the sleeve may be a rubber sleeve. In some embodiments, the sleeve may be plastic or polymeric sleeve. The sleeve may come in one or more different sizes, for example small, medium, and large. Alternatively, the sleeve may come in a One size fits all' size.

[0026] The attachment portion may be any suitable size or shape for mounting the sleeve. In some embodiments, the attachment portion is substantially cylindrical. The attachment portion may include a retaining portion for retaining the sleeve. In some embodiments, the retaining portion may be a recess for receiving a portion of the sleeve or a lip for engaging a portion of the sleeve. In some embodiments, the third body portion forms the attachment portion. In some embodiments, the attachment portion includes an audio speaker for directing audio into a user's ear.

[0027] The at least one earbud may further include a seal adapted to substantially preclude water from entering the at least one recess when the at least a portion of the at least one earbud is received within the at least one recess. The seal may be fabricated from any particular material suitable for precluding water. The seal may be of any size or shape. The seal may be waterproof or may simply form a watertight seal between the seal and the at least one recess. The seal may be mounted to the body portion at a location suitable for preventing moisture and/or water from entering the at least one recess of the audio playback device when a portion of the at least one earbud is received within the recess. In some embodiments, the seal is mounted to the first body portion. In some embodiment, the seal is mounted to the third body portion.

[0028] The at least one earbud may include an earpiece attachment for mounting the at least one earbud to an ear of the user. The earpiece attachment may be made from any suitable material. Preferably, the earpiece attachment is made from a high density flexible material, such as rubber or plastic. The ear piece attachment may come in one or more different sizes, for example small, medium, and large. Alternatively, the ear piece attachment may come in a One size fits all' size.

[0029] The earpiece attachment may include a body portion for at least partially mounting the earpiece attachment to a user's ear. The body portion of the earpiece attachment may be any suitable size or shape. In preferred embodiments, however the body portion of the earpiece attachment may be substantially elongate and substantially correspond to the shape a user's ear.

[0030] The earpiece attachment may include a receiving portion for receiving a portion of the at least one earbud. The receiving portion may comprise a recess or bore that extends into the body at any suitable angle and to any suitable depth. The receiving portion may be of any suitable shape or size, although in a preferred embodiment of the invention, the receiving portion may be a substantially tubular portion for receiving at least a portion of the second body potion of the earbud therein. In some embodiments, the dimensions of the tubular portion may substantially correspond to or be slightly smaller than the dimensions of the second body portion such that insertion of at least a portion of the second body portion of the earbud into the tubular portion of the earpiece attachment results in a 'snug' fit. In preferred embodiments, the earpiece attachment may be attachable and detachable to the at least one earbud. In other embodiments, the earpiece attachment is permanently attached to the at least one earbud.

[0031] In some embodiment, the audio playback device may include a pair of earbuds. In some embodiments, the audio playback device may include two pairs of earbuds. Advantageously, a first pair of earbuds may be charging while a second pair may be in use. Additionally, if a first pair of earbuds is being charged whilst a second set is in use, the first set will act to seal the charging openings in the audio playback device whilst charging. Each pair of earbuds may include a left earbud and a right earbud. Each pair of earbuds may include a left earbud and a right earbud for corresponding to each ear of a user.

[0032] The audio playback device may be any suitable electronic media playback device, for example, a smart watch, an audio player, or the alike. The audio playback device may include a display for displaying graphics in the form of the time, song tracks, pictures etc. In some embodiments, the display may be a touch screen display. Advantageously, a user may be able to operate the audio playback device using the touchscreen. In other embodiments, the audio playback device may include one or more buttons for operating the audio playback device.

[0033] The first battery may be any suitable battery known in the art. Preferably, the first battery may be a lithium battery. Preferably, the first battery is a rechargeable battery. The first battery may be of any suitable size or shape suitable for being housed in the audio playback device.

[0034] The at least one recess may be any particular size or shape suitable for receiving at least a portion of the at least one earbud. In some embodiments, the size and shape of at least one recess corresponds to the size and shape of a portion of the at least one earbud that is received into the recess. In some embodiments, the size and shape of the at least one recess corresponds to the size and shape of the third body portion. Preferably, the at least one recess is waterproof when no earbud is secured thereto. Preferably, the at least one recess is waterproof when at least one earbud is secured thereto. The at least one recess (and/or the at least one earbud) may include a sealing means for sealing the at least one recess when at least one earbud is attached such that water and/or debris is prevented from entering the at least one recess. The seal may correspond to a seal located on the at least one earbud. The sealing means may be in the form of an O-ring.

[0035] In some embodiments, the at least one recess is located on a side of the audio playback device accessible when the audio device is mounted to a user. In some embodiments, a pair of recesses is located on opposite sides of the audio playback device. A person skilled in the art, however, would understand that the at least one recess may be located at any suitable position on the audio playback device.

[0036] The corresponding second charging engagement portion may protrude into the recess and extend from an inner surface of the at least one recess. The corresponding second charging engagement portion may extend from an inner wall of the at least one recess in any suitable direction and for any suitable distance. Thus, it is envisaged that the corresponding second charging engagement portion may comprise a protrusion. In alternative embodiments, the corresponding second charging engagement portion may form part of the at least one recess side wall. The corresponding second charging engagement portion may be of any suitable size or shape and may be fabricated from any suitable material. In a preferred embodiment of the invention, however, the second charging engagement portion may be fabricated from a relatively corrosion-resistant material. In addition, it may be preferred that the second charging engagement portion may be fabricated from a relatively electrically-conductive material. In a specific embodiment of the invention, the second charging engagement portion may be in the form of a stainless steel protrusion.

[0037] The corresponding second charging portion may act as a retainer for retaining the at least one earbud. The corresponding second charging portion may engage the first charging engagement portion to prevent the at least one earbud from being dislodged from the recess and/or to allow the first battery to charge the second battery.

[0038] The audio playback device may include at least one clip holder or harness for receiving a portion of the at least one earbud. The clip holder or harness may extend outwardly from a side of the audio playback device. The clip holder or harness may be substantially reshaped and include an inwardly extending retaining portion retaining a portion of the at least one earbud.

[0039] The audio playback device may include a wristband for mounting the audio playback device to a user. The wristband may be any suitable wristband known in the art. The wristband may be attachable and/or detachable to the audio playback device. In other words, the wristband may be replaceable, for example, in the event that the wristband is damaged or the user simply wants to achieve an alternative look. In some embodiments, the wristband may be permanently attached to the audio playback device.

[0040] The wristband may include one or more wristband portions. In some embodiments, the wristband includes two wristband portions similar to a watch band. Each of the wristband portions may attach separately to the audio playback device at one end and to one another at an opposite end. The wristband portions may each include a first end and a second end. The first end may be a device connection end for mounting the wristband to the audio playback device. The second end may be a wristband portion attachment end for connecting the wristband portions together. In some embodiments, the attachment end of one of the wristband portions may include a clasp or the alike and the attachment end of the other wristband portion may in include one or more apertures for receiving a portion of the clasp or buckle such that the wristband portions are able to be secured together when the audio playback system is mounted to a user' s arm or wrist.

[0041] The wristband may include a USB for charging the audio playback device and/or loading multimedia onto the audio playback device for example, as shown in United States design patent no. 638327. In some embodiments, the USB may be located at or towards an end of the wristband. Optionally, the wristband may include a USB cover portion for protecting the USB from debris. The cover portion may be mounted to the wristband using a hinge connection or the alike. Preferably, the cover portions is mounted to the wristband at or toward an end of the wristband such that the cover portion is moveable between a first position whereby the cover portion is an extension of the wristband and acts to cover the USB and at least one second position whereby the cover portion is pivoted about an edge of the wristband in order to expose the USB such that the USB may be inserted into a USB port. [0042] The audio playback device may include at least one cap or plug for capping or plugging one or more openings in the audio playback device, for example, the at least one recess when the at least one earbud is not received within the at least one recess. The at least one cap or plug may be fabricated from any suitable material. In preferred embodiments, the at least one cap or plug is fabricated from a rubber or rubber like material. The at least one cap or plug may be any particular size or shape suitable for covering the one or more openings, for example, the at least one recess, such that moisture or water is prevented from entering the one or more openings. In some embodiments, the cap or plug forms a press fit with the one or more openings. In some embodiments, the cap or plug may be mounted to the audio device using any suitable means for preventing the cap or plug from becoming lost when not engaged with the one or more openings. In some embodiments, the cap or plug may be in the form of another earbud.

[0043] The audio playback device may include a USB port for charging the first battery and a cap or cover covering the USB port when not in use. Preferably, the cap or cover may be a removable cap or cover. In some embodiments, the USB cap or cover may be a flip cover. The USB flip cover may include a seal for preventing ingress of water or moisture. In other embodiments, the USB cap or cover is fabricated out of a rubber material. In such embodiments, the USB cap or cover may form an interference fit with the USB port to prevent ingress of water or moisture. In some embodiments, the USB port may be accessible from an upper surface of the audio playback device such that a USB device may be mounted to the USB port while the audio playback system is mounted to a user. In some embodiments, the USB port may be accessible from a lower surface of the playback device.

[0044] The audio playback device may include a solar panel for charging the first battery. The solar panel may be any suitable size or shape. The solar panel may be any suitable solar panel known in the art. In preferred embodiments, the solar panel may be located on an upper surface of the audio playback device such that the solar panel may be exposed to sunlight when the audio device is in use. Advantageously, the solar panel may be used for charging the first battery when a connection to a mains supply is not available.

[0045] The audio playback system may further include a strap for attaching the audio playback device to a user. Advantageously, if the audio playback device is separated from the user, then the strap will maintain a secondary connection between the audio playback device and the user such that the audio playback device is not lost. The strap may be made from any suitable material. The strap may be the same as or similar to known leg rope or leashes used with surfboards, kayaks or the alike. [0046] The strap may include a first end and a second end. The first end may include an attachment portion for attaching the strap to the audio playback device. The second end may include a second attachment portion for attaching the strap to a user. Optionally, the second end may include a hook and loop feature for attaching the strap to a user. In some embodiments, the strap further includes a tether portion located between the first and second portion.

[0047] The strap may further include a pouch or pocket for holding items, for example at least one earbud. The pouch may be made of any suitable material. In preferred embodiments, the pouch or pocket may be made out of a rubber material In preferred embodiments, the pouch or pocket may be waterproof.

[0048] Optionally, the pouch or pocket may form part of the strap. In alternative embodiments the pouch or pocket may be attached to the strap. The pouch or pocket may be attached to the strap using any suitable means, for example, using hook and loop attachment means.

[0049] The system of the present invention may further include at least one charging dock for charging the audio playback device and/or at least one earbud connected to the charging dock. Optionally, the charging dock may include a first charging portion for connecting and charging the audio playback device. The first charging portion may be a USB port for receiving a corresponding USB located on the audio playback device and/or wristband. Alternatively, the first charging portion may be a USB for inserting in to a corresponding USB port located on the on the audio playback device and/or wristband.

[0050] In some embodiments, the charging dock may further include at least one second charging portion for charging at least one earbud. Preferably, the charging dock may include two second charging portions for charging a pair of earbuds. Advantageously, in preferred embodiments, a first pair of earbuds mounted to the charging dock and a second pair of earbuds mounted to the audio playback device may be charged at the same time.

[0051] An audio playback device for receiving at least one earbud including a first charging engagement portion, the audio playback device including:

a first battery, and

wherein when at least a portion of the at least one earbud is received into the recess, the first charging engagement portion and the corresponding second charging engagement portion align such that charge from the first battery of the audio playback device is used to charge the at least one earbud.

[0052] An earbud for being at least partially received in an audio playback device including a first battery and at least one recess for receiving at least a portion of the at least one earbud, the recess including a first charging engagement portion, the earbud including:

a corresponding second charging engagement portion for engaging the first charging engagement portion,

wherein when at least a portion of the at least one earbud is received into the recess, the first charging engagement portion and the corresponding second charging engagement portion engage such that charge from the first battery of the audio playback device is used to charge the earbud.

[0053] Any of the features described herein can be combined in any combination with any one or more of the other features described herein within the scope of the invention.

[0054] The reference to any prior art in this specification is not, and should not be taken as an acknowledgement or any form of suggestion that the prior art forms part of the common general knowledge.

BRIEF DESCRIPTION OF DRAWINGS

[0055] Preferred features, embodiments and variations of the invention may be discerned from the following Detailed Description which provides sufficient information for those skilled in the art to perform the invention. The Detailed Description is not to be regarded as limiting the scope of the preceding Summary of the Invention in any way. The Detailed Description will make reference to a number of drawings as follows:

[0056] Figure 1 is a perspective view the audio playback system shown in Figure 2 in accordance with the first embodiment of the present invention. As can be seen, a pair of earbuds is being mounted to the audio playback device; the far earbud being an unsecured position and the near earbud being in a secured position.

[0057] Figure 2A is a side view of an earbud in accordance with an embodiment of the present invention.

[0058] Figure 2B is a side view of an earbud including an alternatively shaped guide portion to that shown in Figure 2A.

[0059] Figure 3 is a front view of the audio playback system shown in Figure 1 in accordance with the first embodiment of the present invention. As can be seen, a single earbud (i.e. left earbud) is secured to the audio playback device.

[0060] Figure 4 is a side view of an audio playback device shown in Figure 1 in accordance with the first embodiment of the present invention.

[0061] Figure 5 is a front view of the audio playback system shown in accordance with a second embodiment of the present invention. As can be seen, a single earbud (i.e. left earbud) is secured to the audio playback device.

[0062] Figure 6 is a side view of an audio playback device shown in Figure 5 in accordance with the second embodiment of the present invention.

[0063] Figure 7 is a back view of an earbud as shown in Figure 2 when the earbud is mounted to an earpiece attachment.

DESCRIPTION OF EMBODIMENTS

[0064] Figure 1 shows audio playback system 100 in accordance with a preferred embodiment of the present invention. The audio playback system 100 includes a pair of earbuds 102, in the form of wireless, rechargeable earbuds 102a and 102b. The audio playback system also includes a second pair of wireless, rechargeable earbuds (not shown) that are either in use or mounting to a docking station (not shown) charging. Each earbud includes a first charging engagement portion 116. The audio playback system further includes an audio playback device 104 including a first battery (not shown) and a pair of recesses 120 each for receiving at least a portion of one of earbuds 102a or 102b. Recess 120 includes a corresponding second engagement charging portion 117 for engaging the first charging engagement portion 116. When at least a portion of an earbud 102 is received into a recess 120, a shown best in Figure 1, charging engagement portion 116 of the earbud and corresponding charging engagement portion 117 of the audio playback device engage such that charge from the first battery (not shown) of the audio playback device is used to charge earbud 120. Advantageously, the wireless earbuds 102 need not be charged using separate dock.

[0065] In this embodiment, the audio playback system 100 is waterproof and/or shock proof. Advantageously, the playback system may be worn by a user in wet environments or wet conditions, for example, during water sports such as surfing, and/or outdoors when raining. Further, the playback system may be worn by a user during high impact sporting activities such as skating.

[0066] An earbud 102 is shown in Figure 2. Earbud 102 includes a body 106. Body 106 includes three body portions: a first body portion 108 for locating the at least one earbud relative to a user's ear, a second body portion 110 for locating the at least one earbud relative to a user's ear, and a third body portion 112 for at least partially extending into a user's ear and/or into the at least one recess of the audio device.

[0067] At least a portion of the body portion 108 is larger than an ear canal opening such that body portion 108 does not fully extend into a user ear canal. Body portion 108 houses a second battery (not shown) for powering the earbud. In alternative embodiments, the second battery may be housed in any of the other body portion suitably sized to house the battery.

[0068] Body portion 110 is substantially elongate and extends from a lower portion of the body portion 108. Body portion 110 abuts the side of a user's ear in order to further locate earbud 102 relative to a user's ear. Body portion 110 houses a wireless antenna 140 for communicating with audio device 104. In alternative embodiments, the wireless antenna 140 may be housed in any other body portion so long as the wireless antenna is able to communicate with audio device 104.

[0069] Body portion 112 extends outwardly from first body portion 108, at about 90° to body portion 110. Body portion 112 includes: an attachment portion (not shown) for mounting a sleeve 114 to earbud 120; an audio speaker (not shown) for directing audio into a user's ear, a charging portion, in the form of charging engagement portion 116, for charging the battery of the earbud; and, a guide portion 118, in the form of a first portion of a locking mechanism, for guiding the earbud into recess of audio device 104.

[0070] Sleeve 114 may be attached to body portion 112 using any suitable means known in the art. Sleeve 114 essentially acts as a plug which plugs the user's ear canal in order to secure earbud 102 within the user's ear canal. In this embodiment, sleeve 114 is a rubber sleeve. However, a person skilled in the art would understand that the sleeve may be fabricated from any suitable material.

[0071] Charging engagement portion 116 protrudes outwardly from body portion 112. In alternative embodiments (not shown), charging engagement portion 116 may protrude from any other portion of the earbud so long as charging engagement portion 116 located on the earbud is able to engage corresponding charging engagement portion 117 located on audio device 104.

[0072] Guide portion 118 is in the form of a recess that spirals around an outer surface of body portion 112 such that when a portion of earbud 102 is aligned with a recess 120 of the audio device, rotation of the earbud allows guide portion 118 to travel along corresponding guide portion 119 which allows an increased portion of the earbud to enter the recess. An alternative profile of the guide portion 118' is also shown in Figure 2B. In other alternative embodiments, guide portion 118 may be located on any other body portion so long as guide portion 118 is able to engage corresponding guide portion (not shown) located on the audio device.

[0073] Earbud 102 further includes a seal, in the form of a waterproof seal 122. Waterproof seal 122 is mounted to body portion 108. When earbud 102 is mounted to audio device 104 the waterproof seal prevents moisture and/or water from entering recess 120. In alternative embodiments, the waterproof seal may be located on any other body portion so long as the waterproof seal prevent moisture and/or water from entering recess 120.

[0074] In some embodiments, earbud 102 includes an earpiece attachment 124 for mounting the at least one earbud to an ear of the user, as best shown in Figure 7. In this embodiment, earpiece attachment 124 is made from a high density flexible rubber material. However, a person skilled in the art would understand that earpiece attachment 124 may be made from any suitable material which allows the ear attachment to be mounted to a user's ear.

[0075] Earpiece attachment 124 includes a receiving portion for receiving a portion 126 of earbud 102, and a body portion 128 for mounting the earpiece attachment to a user's ear. The receiving portion 126 is a substantially tubular portion and includes a bore for receiving at least a portion of body portion 110 of earbud 102. Body portion 128 of the earpiece attachment is substantially elongate and the shape of the body portion 128 substantially corresponds to the shape a user's ear. Earpiece attachment 124 is attachable and detachable to earbud 102.

[0076] In the embodiment shown in Figures 1-4, audio playback device 104 is a smart watch. In alternative embodiments, audio playback device 104 may be a smart watch or the alike. As best shown in Figure 3, audio playback device 104 includes a touch screen display 226 for displaying graphics, for example, the time, song tracks, images, text etc. Advantageously, a user may be able to operate the audio playback device using the touchscreen. In other embodiments (not shown), the display may not be touch screen, in such embodiments, audio playback device 104 may include one or more buttons for operating the audio playback device.

[0077] Audio playback device 104 includes a battery (not shown) for providing power to the audio playback device. In this embodiment, the battery is a lithium battery. However, a person skilled in the art would understand that any suitable may be used so long as the battery is mountable to the audio device. The battery of the audio playback device is a rechargeable battery.

[0078] Audio playback device 104 further includes a pair of recesses 120. Each recess is for locating one of the pair of earbuds portion 102a and 102b. The size and shape of each recess 120 corresponds to the size and shape of the portion of earbud 102 that is received into each recess.

[0079] Audio play back device further includes charging engagement portion 117. Charging engagement portion 117 protrudes into recess 120 and extends from an inner wall of the recess such that when earbud 102 is mounted to the audio device, charging engagement portion 116 engages charging engagement portion 117. This contact allows the battery located in earbud 102 to charge.

[0080] Charging engagement portion 117 is located closer to the opening of recess 120 in comparison to charging engagement portion 116. This allows charging engagement portion 117 to act as a stop for preventing earbud 102 from dislodging from recess 120.

[0081] Audio playback device 104 includes a pair of clip holders (or harnesses) 126 each for receiving a portion of earbud 102. Clip holder 126 extends outwardly from each respective side of audio playback device 102. Clip holder 126 is substantially L-shaped and includes an inwardly extending retaining portion for retaining body portion 110 of earbud 102. The length of the clip holder 126 is slightly shorter than the length of body portion 110. Advantageously, when earbud 102 is securely mounted to audio playback device 104, a user may push a free end of body portion 110 inwardly toward a body portion of the audio playback device and flick upwards in order to dislodge body 110 from clip holder 126.

[0082] Audio playback device 104 further includes a wristband 138 for mounting the audio playback device to a user. In some embodiments, wristband 138 is attached and detachable to audio playback device 104. Advantageously, a user may be able to change the wristband for example when broken, or in order to change the overall visual look of the audio playback device. In other embodiments, wristband 138 is permanently secured to audio playback device 104.

[0083] Audio playback device includes a USB port (not shown) for charging the battery of the audio playback device and a flip up cover 130 for covering the USB port when not in use. As shown best in Figure 4, the USB port may be accessible from an inside surface of the audio playback device. In alternative embodiments, however, such as the one shown in Figures 5 to 6, the USB port is located on an outer surface of the audio playback device 104.

[0084] Audio playback device 104 also includes a solar panel for charging the first battery. In preferred embodiments, the solar panel may be located on an upper surface of the audio playback device. Advantageously, the solar panel 132 for charging the battery of the audio device. Solar panel 132 may be used to charge audio playback device 104 when no connection to a mains supply is available.

[0085] Figures 5 to 6 show an alternative embodiment of the audio playback system shown in Figures 1 to 4 and 7. Audio playback system 500 (shown in Figures 5 to 6) includes substantially the same feature or variations of the same features described above in relation to the embodiment shown in Figures 1 to 4 and 7.

[0086] In the present specification and claims (if any), the word 'comprising' and its derivatives including 'comprises' and 'comprise' include each of the stated integers but does not exclude the inclusion of one or more further integers.

[0087] Reference throughout this specification to 'one embodiment' or 'an embodiment' means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearance of the phrases 'in one embodiment' or 'in an embodiment' in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more combinations.

[0088] In compliance with the statute, the invention has been described in language more or less specific to structural or methodical features. It is to be understood that the invention is not limited to specific features shown or described since the means herein described comprises preferred forms of putting the invention into effect. The invention is, therefore, claimed in any of its forms or modifications within the proper scope of the appended claims (if any) appropriately interpreted by those skilled in the art.

Claims

1. An audio playback system including:

at least one earbud including a first charging engagement portion; and,

an audio playback device including:

a first battery, and

2. The audio playback system as claimed in claim 1, wherein the at least one earbud is a wireless earbud.

3. The audio playback system as claimed in claim 1 or claim 2, wherein the at least one earbud and/or the audio playback device is waterproof or water-resistant.

4. The audio playback system as claimed in any one of the preceding claims, wherein the at least one earbud includes a body and the first charging engagement portion is located on the body.

5. The audio playback system as claimed in any one of the preceding claims, wherein the first charging engagement portion and the corresponding second charging engagement portion are fabricated from an electrically-conductive material.

6. The audio playback system as claimed in claim 4, wherein the first charging engagement portion extends from a portion of the body which at least partially extends into the at least one recess of the audio device when the at least one earbud is mounted to the audio playback device.

7. The audio playback system as claimed in any one of the preceding claims, further including a locking mechanism for locking the at least one earbud to the audio playback device, the locking mechanism including a first locking portion and a corresponding second locking portion.

8. The audio playback system as claimed in claim 7, wherein the at least one earbud includes the first locking portion and the audio playback includes the second locking portion.

9. The audio playback system of as claimed in claim 7 or claim 8, wherein the first locking portion is a male portion and the second locking portion is a corresponding female portion, and the male and female locking portions connect to one another via a rotational engagement.

10. The audio playback system as claimed in any one of claims 7 to 9, wherein the first locking portion and the second corresponding locking portion connect in a manner such that the at least one earbud is drawn into the at least one recess when rotated in a first direction and released from the at least one recess when rotated in a second direction.

11. The audio playback system as claimed in any one of the preceding claims, wherein the corresponding second charging engagement portion protrudes into the at least one recess and extends from an inner surface of the at least one recess.

12. The audio playback system as claimed in any one of the preceding claims, wherein the corresponding second charging engagement portion engages the first charging engagement portion preventing the at least one earbud from being dislodged from the recess.

13. The audio playback system as claimed in any one of the preceding claims, further including at least one charging dock for charging the audio playback device and/or at least one earbud connected to the charging dock.

14. An audio playback device for receiving at least one earbud including a first charging engagement portion, the audio playback device including:

a first battery, and

15. An earbud for being at least partially received in an audio playback device including a first battery and at least one recess for receiving at least a portion of the at least one earbud, the recess including a first charging engagement portion, the earbud including: