earphone

Abstract

The utility model discloses a kind of earphones, belong to headphone technology, existing earphone is only configured with a battery, earphone endurance time is shorter, the utility model is equipped with battery compartment by being on one ear cover, battery compartment is suitable for installing dry battery, the earphone also includes lithium battery, the shape and specification of lithium battery are matched with battery compartment so that lithium battery and dry battery can be mutually replaced, battery compartment is compatible lithium battery and dry battery.When having charging condition, lithium battery can be used to power earphone, avoid the consumption of dry battery and increase use cost.When not having charging condition and lithium battery is exhausted, dry battery is used to power earphone to prolong the endurance time of earphone.Due to dry battery has standard specification, strong universality, can be self-provided, can also be temporarily purchased.Lithium battery has special purpose, its shape and specification are matched with battery compartment so that lithium battery and dry battery can be mutually replaced, battery compartment is compatible lithium battery and dry battery.

Description

Technical Field

[0001] This utility model belongs to the field of headphone technology, specifically relating to a headphone that can isolate external noise. Background Technology

[0002] With the continuous improvement and advancement of technology, noise levels are increasing in various aspects of life, and headphones are becoming more feature-rich and offer more modes, leading to increased power consumption. To ensure headphones are always usable, they need a sufficient power source. Dry cell batteries are replaceable but suffer from significant wear and tear; lithium batteries can be repeatedly charged and discharged, making them reusable, but they are expensive, and once depleted, headphones will stop working if not recharged promptly. Currently, most headphones use either dry cell batteries or lithium batteries, and this reliance on only one type of battery often fails to guarantee long battery life. Utility Model Content

[0003] This invention addresses the short battery life of existing headphones that only use one type of battery. It provides a headphone that is compatible with both lithium and dry cell batteries, thereby increasing the headphone's battery life by replacing and complementing the dry cell and lithium batteries.

[0004] To achieve the above objectives, the present invention provides an earphone including a headband, with an earcup at each end of the headband, and a battery compartment on each earcup. The battery compartment is suitable for storing dry cell batteries. The earphone also includes a lithium battery, the shape and specifications of which are matched with the battery compartment so that the lithium battery and dry cell batteries can be interchanged, and the battery compartment is compatible with both lithium batteries and dry cell batteries.

[0005] Therefore, lithium batteries are typically used to power headphones, avoiding the depletion of dry cell batteries and the resulting increased operating costs. When charging is unavailable and the lithium batteries are depleted, dry cell batteries are used to power the headphones to extend their battery life. Dry cell batteries have standard specifications and are highly versatile; they can be readily available or purchased on short notice. Lithium batteries, on the other hand, are specialized; their shape and specifications match the battery compartment, allowing for interchangeability between lithium and dry cell batteries, and the battery compartment is compatible with both.

[0006] These headphones are equipped with earcups that cover the ears to isolate external noise.

[0007] Preferably, the battery compartment is configured to hold 2-4 dry cell batteries arranged in parallel or series to provide the necessary power for the headphones.

[0008] Preferably, the battery compartment and lithium battery are equipped with an error-proof installation structure to prevent incorrect installation of the lithium battery and protect the circuit safety.

[0009] Preferably, the installation error-proof structure includes a guide groove on the side wall of the battery compartment and a protrusion on the edge of the lithium battery. When the lithium battery is installed into the receiving cavity in the correct posture, the protrusion aligns with the guide groove for installation; when the lithium battery is installed into the receiving cavity in the wrong posture, the protrusion and guide groove are misaligned to prevent installation. This prevents incorrect installation of the lithium battery. Furthermore, in situations with poor visibility or where observation is difficult, the installation error-proof structure can guide the installation of the lithium battery into place.

[0010] To protect the circuitry and prevent damage caused by reverse installation of the lithium battery, a diode is connected in series in the headphone's load circuit. This diode prevents current flow when the lithium battery is installed in reverse.

[0011] Preferably, the lithium battery includes a casing and a core, with the casing having a charging interface for charging the core. Therefore, the lithium battery can be charged directly without the need for a dedicated charger.

[0012] Preferably, the inside of the headband is fitted with a detachable headband. This allows the headband to be removed for cleaning.

[0013] Preferably, the inner side of the headband has a wire channel concealed by the headband, and the wires are arranged in the wire channel. Accordingly, the wires in the wire channel can cross the two ear cups at both ends of the headband.

[0014] Preferably, the headband includes a main body and end components, with the earcups rotatably connected to the end components via connecting arms. Accordingly, the main body can be made of an elastic material to provide elasticity when wearing the headphones, increasing wearing comfort, while the end components are made of a high-strength material to ensure a firm and durable assembly with the connecting arms, thus ensuring both the overall headband is lightweight and the connection between the headband and earcups is reliable and durable.

[0015] Preferably, the main body includes two linear elastic elements, a frame, and a covering layer. The two linear elastic elements are spaced apart and constrained by the frame. The covering layer covers the frame and / or the two linear elastic elements, with both ends of the two linear elastic elements extending out of the covering layer. End components are fitted to the extended ends of the two linear elastic elements. When wearing the headphones, the linear elastic elements provide appropriate elasticity, ensuring that the two earcups cover the ears while maintaining adequate support, preventing them from slipping off the head. The covering layer can be made of a soft, skin-friendly material to increase wearing comfort.

[0016] Preferably, the end member includes a first cover and a second cover that snap together, the first cover and the second cover clamping the ends of two linear elastic members from both sides and fastening them together with fasteners. The end member of this structure is easy to assemble.

[0017] Preferably, the first cover and / or the second cover have a groove and a blocking portion located at the edge of the groove, and the end of the linear elastic member has a thicker portion. The end of the linear elastic member is constrained within the corresponding groove by the first cover and / or the second cover, and the blocking portion prevents the thicker portion from being pulled out of the groove. This achieves reliable assembly between the end member and the linear elastic member.

[0018] Preferably, the first cover and / or the second cover has a slot, and the connecting arm includes a first arm and a second arm connected by a shaft segment, the shaft segment being constrained within the slot by the first cover and / or the second cover, and the first arm and the second arm being separately rotatably connected to the front and rear sides of an earcup. Accordingly, the end member is reliably assembled with the connecting arm.

[0019] Preferably, the middle portion of the shaft segment has a bend, and the lower edges of the first and second covers have notches. The bend extends out of the first and second covers at the notches and is blocked axially (in the front-to-back direction) by the end member. Accordingly, the connecting arm is limited to rotation only, allowing the position of the earcups to be changed as needed for wearing or storage.

[0020] Preferably, the inner side of the main body has a wire groove, the fastening part of the first cover and the second cover has a first wire passage hole and a second wire passage hole, and the earcups have a third wire passage hole. Wires connected to the battery box are arranged in the wire groove. The wires are introduced into the end member through the first wire passage hole, led out from the end member through the second wire passage hole, and introduced into the earcups through the third wire passage hole. Accordingly, the wires supply power to and control the earcups are achieved through the wires. The wires on the headband are constrained to the headband, and the wires inside the earcups are constrained to the earcups, with only a portion of the wires exposed between the end member and the earcups, to prevent tangling.

[0021] Preferably, the first cover and the second cover are respectively provided with snap-fit ​​feet and snap-fit ​​grooves. The snap-fit ​​feet are inserted into the snap-fit ​​grooves to bind the first cover and the second cover together. The snap-fit ​​feet and fasteners are distributed separately. Accordingly, the first cover and the second cover are reliably assembled.

[0022] This invention features a battery compartment on an earcup, suitable for housing dry-cell batteries. The headphones also include a lithium battery, the shape and specifications of which match the battery compartment, allowing for interchangeability between lithium and dry-cell batteries. When charging is available, the lithium battery powers the headphones, avoiding the depletion of dry-cell batteries and reducing operating costs. When charging is unavailable and the lithium battery is depleted, dry-cell batteries power the headphones, extending their battery life. Dry-cell batteries have standard specifications and are highly versatile, allowing for both personal use and temporary purchase. Lithium batteries, on the other hand, are specialized, and their shape and specifications, matched to the battery compartment, enable interchangeability between lithium and dry-cell batteries, ensuring compatibility between the two. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the earphones of this utility model in a stowed state;

[0024] Figure 2 This is a schematic diagram of the earphone of this utility model in the unfolded state;

[0025] Figure 3 This is a schematic diagram showing the headphone of this utility model with the two earcups and headband separated.

[0026] Figure 4 for Figure 3 A schematic diagram of the structure shown from another perspective;

[0027] Figure 5 This is a schematic diagram of the battery box of this utility model, which is compatible with both lithium batteries and dry cell batteries.

[0028] Figure 6 for Figure 5 Enlarged view of part B in the image;

[0029] Figure 7 for Figure 5 An enlarged schematic diagram of the lithium battery shown from another perspective;

[0030] Figure 8 for Figure 5 An enlarged schematic diagram of the hatch cover from another perspective;

[0031] Figure 9 for Figure 3 Enlarged view of part A in the image;

[0032] Figure 10 This is a schematic diagram showing the connection arms assembled at both ends of the headband of this utility model;

[0033] Figure 11 for Figure 10 The left view;

[0034] Figure 12 for Figure 11 Sectional view along axis AA;

[0035] Figure 13 for Figure 11 BB-direction sectional view;

[0036] Figure 14 This is a schematic diagram showing the separation of the covering layer from the skeleton and the linear elastic element, as well as the disassembly of the first cover and the second cover of this utility model.

[0037] Figure 15 for Figure 14 A schematic diagram of the structure shown from another perspective;

[0038] Figure 16This is a schematic diagram of the first cover and the second cover of this utility model;

[0039] Figure 17 for Figure 16 A schematic diagram of the structure shown from another perspective;

[0040] Figure 18 This is a schematic diagram of the diode configuration in the load circuit of this utility model;

[0041] Explanation of the labels in the diagram:

[0042] 100 headbands

[0043] 110 Main body, 111 Linear elastic element, 112 Thick part, 113 Skeleton, 114 Covering layer, 115 Wire groove,

[0044] 120 End component, 121 First cover, 122 Second cover, 123 Groove, 124 Blocking part, 125 Slot, 126 Notch, 127 First wire through hole, 128 Second wire through hole, 129 Snap-fit ​​pin, 1210 Snap-fit ​​groove

[0045] 130 headband;

[0046] 200 Earcups, 201 Battery compartment, 202 Guide groove, 203 Third cable hole, 204 Compartment cover, 205 Pin, 206 Bend, 207 Buckle, 208 Socket, 209 Slot;

[0047] 300 dry cell batteries;

[0048] 400 lithium battery, 401 protrusion, 402 housing, 403 core, 404 type-C interface, 405 metal contact charging interface;

[0049] 501 Load, 502 Switch, 503 Diode, 504 Wire;

[0050] 600 Connecting arm, 601 First arm, 602 Second arm, 603 Shaft section, 604 Bending section. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0052] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this utility model are intended to cover non-exclusive inclusion, such as a method or product that includes a series of technical features, not limited to those technical features explicitly listed, but also including other technical features that may be included in the method or product but not explicitly listed.

[0053] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Among them, "upper" and "lower," "left" and "right," and "front" and "rear" are opposite directions.

[0054] In the description of this utility model, it should be understood that the technical features defined by terms such as "first," "second," and "third," which have a sequential concept, are only used to clearly describe the defined technical features and to clearly distinguish the defined technical features from other technical features, and do not represent that they are named in this way in actual implementation. Therefore, they should not be construed as limitations on this utility model.

[0055] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings.

[0056] like Figure 1-4 As shown, the headphones include a headband 100, with an earcup 200 at each end of the headband 100.

[0057] like Figure 3 , Figure 5 As shown, a battery compartment 201 is located on the left earcup, covered by a cover 204. The battery compartment 201 is suitable for storing dry cell batteries, such as AA and AAA standard batteries. The headphones also include at least one lithium battery 400, the shape and specifications of which are matched to the battery compartment, allowing for interchangeability between lithium batteries and dry cell batteries; the battery compartment is compatible with both lithium batteries and dry cell batteries. Figure 5 In the diagram, dry cell batteries are shown with dashed lines to distinguish them from lithium batteries, which is intended to show that dry cell batteries and lithium batteries are installed separately in the battery compartment, rather than both.

[0058] Because lithium batteries can be repeatedly charged and discharged, are reusable, and have a high energy density, they can be prioritized for powering headphones, avoiding the depletion of dry cell batteries and the resulting increased operating costs. When charging is unavailable and the lithium batteries are depleted, dry cell batteries can be used to power the headphones to extend their battery life. Dry cell batteries have standard specifications and are highly versatile; they can be readily available or purchased on short notice. Lithium batteries, on the other hand, are specialized, with their shape and specifications matching the battery compartment, allowing for interchangeability between lithium and dry cell batteries, and the battery compartment is compatible with both types.

[0059] Because these headphones are equipped with earcups, you can cover your ears with the earcups to isolate them from external noise.

[0060] like Figure 5 As shown, the battery compartment 201 is configured to hold 2-4 dry cell batteries 300 arranged in parallel or series, providing the necessary power for the headphones. Commonly used standard dry cell batteries, such as AA and AAA batteries, have one end as the positive terminal and the other as the negative terminal. Therefore, the electrode plates in the battery compartment used for connecting the dry cell batteries in series and for connecting the circuit can be configured according to existing known technologies. In typical designs, the electrode plate corresponding to the negative terminal of the dry cell battery is a spring or contact spring, making it easy to identify the positive and negative terminals when installing the dry cell batteries, thus ensuring correct installation according to the battery's positive and negative markings. Lithium batteries, due to their specialized nature, not only have a shape and specifications that match the battery compartment, allowing for interchangeability between lithium batteries and dry cell batteries, and the battery compartment being compatible with both lithium batteries and dry cell batteries, but the positions of their positive and negative terminals are also adaptively changed according to the positions of the electrode plates in the battery compartment. When the number of dry cell batteries is odd, the positive and negative terminals of the lithium battery are located at opposite ends; when the number of dry cell batteries is even, the positive and negative terminals of the lithium battery are located at the same end.

[0061] like Figure 5-7 As shown, the battery compartment 201 and the lithium battery 400 are equipped with an installation error-proof structure. This prevents incorrect installation of the lithium battery and protects the circuit safety. Specifically, the installation error-proof structure includes a guide groove 202 located on the side wall of the battery compartment 201 and a protrusion 401 located on the edge of the lithium battery 400. When the lithium battery is installed in the receiving cavity in the correct posture, the protrusion aligns with the guide groove, allowing installation. When the lithium battery is installed in the receiving cavity in the wrong posture, the protrusion is misaligned with the guide groove, preventing installation. Therefore, the guide groove 202 is offset from the center of symmetry of the battery compartment 201, and the protrusion 401 is offset from the center of symmetry of the lithium battery 400. This prevents incorrect installation of the lithium battery. Moreover, in situations where visibility is poor or observation is difficult, the installation error-proof structure can guide the lithium battery to be installed correctly.

[0062] Among them, such as Figure 8 As shown, the lower edge of the cover 204 has a pin 205, and the upper edge of the cover extends into a curved portion 206, which has a buckle 207. Figure 6As shown, the lower edge of the battery compartment 201 has an insertion hole 208, and the upper edge of the battery compartment has a slot 209. The insertion pin 205 is inserted into the insertion hole 208, and the elasticity of the bent portion causes the latch 207 to engage in the slot 209, thus covering the battery compartment with the cover. By bending the bent portion, the latch disengages from the slot, and the cover can be lifted to remove the battery compartment and open it.

[0063] like Figure 18 As shown, to protect the circuit and prevent damage caused by reverse installation of the lithium battery, a diode 503 is connected in series in the load circuit of the headphones. When the lithium battery or dry cell battery is installed in reverse, it blocks the current flow, and the circuit automatically activates the protection mechanism, preventing the headphones from starting and avoiding damage to the circuit caused by powering on the device. In the load circuit of the headphones, the load 501 includes all power-consuming devices, and the switch 502 can be a rotary switch, push-button switch, etc., as needed.

[0064] like Figure 5 As shown, the lithium battery 400 includes a housing 402 and a core 403. The housing 402 is provided with a charging interface for charging the core. The charging interface is preferably a Type-C interface 404, which offers good versatility. In other embodiments, other universal charging interfaces can also be used. Accordingly, the lithium battery can be charged directly without the need for a dedicated charger. In the illustrated structure, the lithium battery is also equipped with a metal contact charging interface 405 for users to charge as needed, expanding the user's charging options.

[0065] like Figure 1-2 , Figure 10 , Figure 12-13 As shown, to increase wearing comfort, a detachable headband 130 is attached to the inner side of the headband 100. The headband is located particularly on the inner surface of the headband where it contacts the head and is made of a flexible material such as fabric. Since fabric is easily soiled or damaged and difficult to clean, it is detachably attached to the headband, allowing it to be removed for washing. Preferably, the headband is attached to the headband using an adhesive method such as Velcro. This headband also isolates hair from the headband, preventing oil from the hair from adhering to it. To increase the comfort of the headband, such as by increasing its width and preventing it from being too heavy, the headband is made with a hollow structure. The headband can also be adapted in shape to be made with a hollow structure.

[0066] Given that both earcups require power, such as to drive the speakers to produce sound, the inner side of the headband 100 has a wire channel 115 that is concealed by the headband 130. This wire channel 115... Figure 3-4 , Figure 9As shown in the diagram, wires are arranged within the cable tray 115, which are used to transmit current and control signals. Accordingly, the wires within the cable tray can cross the two earcups at both ends of the connector clamp. Since the battery compartment is located in the left earcup, power is supplied to the right earcup via the wires within the cable tray. Furthermore, the earcup control functions, such as adjusting volume, sound quality, and listening modes (e.g., normal mode, clear sound mode, high-frequency mode, and low-frequency mode), are also controlled simultaneously on both earcups via the wires within the cable tray.

[0067] like Figure 10-15 As shown, the headband 100 includes a main body 110 and an end member 120, and the earcups 200 are rotatably connected to the end member 120 via a connecting arm 600. Accordingly, the main body can be made of an elastic material to provide elasticity when wearing the headphones, increasing wearing comfort, while the end member is made of a high-strength material to ensure the firmness and durability of the assembly with the connecting arm, thus ensuring that the entire headband is lightweight and that the connection between the headband and the earcups is reliable and durable.

[0068] In particular, such as Figure 14-15 As shown, the main body 110 includes two linear elastic elements 111, a skeleton 113, and a covering layer 114. The two linear elastic elements maintain a distance and are constrained by the skeleton, which is generally achieved by injection molding the two linear elastic elements together with a soft material such as plastic. The covering layer covers the skeleton and / or the two linear elastic elements. The covering layer can be injection molded from a material softer than the skeleton or sewn onto the skeleton and / or the two linear elastic elements. Regarding the injection-molded structure, even... Figure 14-15 The illustration shows a headband separated from the frame and linear elastic elements, but this does not imply that the two linear elastic elements, the frame, and the headband are mechanically assembled structures that are not detachable. Of course, the possibility of using a mechanically assembled headband in other embodiments is not excluded.

[0069] like Figure 14-15 As shown, both ends of the two linear elastic elements 111 extend out of the covering layer 114, and the end members 120 are assembled to the extended ends of the two linear elastic elements 111. When wearing the headphones, the linear elastic elements provide appropriate elasticity, ensuring that the two earcups cover the ears while maintaining appropriate support, preventing them from slipping off the head. The covering layer can be made of a soft and skin-friendly material to increase wearing comfort.

[0070] like Figure 14-17As shown, the end member 120 includes a first cover 121 and a second cover 122 that are fastened together. The first cover and the second cover clamp the ends of two linear elastic members 111 from both sides and are fastened together by fasteners. To ensure a tight fit between the first cover and the second cover and prevent separation, several pairs of snap-fit ​​feet 129 and snap-fit ​​grooves 1210 are provided separately on the edges of the first cover 121 and the second cover 122. The snap-fit ​​feet 129 are inserted into the snap-fit ​​grooves 1210 to constrain the first cover and the second cover together. Therefore, the first cover and the second cover are reliably assembled by the snap-fit ​​of the distributed snap-fit ​​feet and snap-fit ​​grooves and the fastening of the fasteners. Even if the connecting arm is repeatedly flipped, the first cover and the second cover will not separate or the shaft segment of the connecting arm will not loosen. Moreover, the end member of this structure is easy to assemble. Furthermore, the first cover 121 and / or the second cover 122 have a groove 123 and a blocking portion 124 located at the edge of the groove. The end of the linear elastic member 111 has a thickened portion 112. The end of the linear elastic member 111 is constrained within the corresponding groove 123 by the first cover and / or the second cover, and the blocking portion 124 prevents the thickened portion 112 from being pulled out of the groove 123. Accordingly, a reliable assembly of the end member and the linear elastic member is achieved.

[0071] like Figure 14-15 , Figure 16-17 As shown, the first cover 121 and / or the second cover 122 has a slot 125. The connecting arm 600 includes a first arm 601 and a second arm 602 connected via a shaft segment 603. The shaft segment 603 is constrained within the slot 125 by the first cover and / or the second cover. In the illustrated structure, the slot 125 appears to be formed by the first cover 121 and the second cover 122 fastening together. The first arm 601 and the second arm 602 are rotatably connected separately to the front and rear sides of an earcup. This achieves a reliable assembly between the end member and the connecting arm. Furthermore, the shaft segment 603 has a bend 604 in the middle, and the lower edges of the first and second covers have notches 126. The bend 604 extends out of the first and second covers at the notches 126 and is blocked axially (in the front-rear direction) by the end member. This limits the connecting arm to rotation only, allowing the position of the earcup to be changed as needed for wearing or storage.

[0072] like Figure 16-17As shown, the fastening portion of the first cover 121 and the second cover 122 has a first wire passage hole 127 and a second wire passage hole 128. The earcups have a third wire passage hole 203. A wire 504 connected to the battery box is arranged in the wire groove 115 inside the main body. The wire 504 is introduced into the end member 120 through the first wire passage hole 127, exited from the end member 120 through the second wire passage hole 128, and entered into the earcup 200 through the third wire passage hole 203. Each wire passage hole can appropriately fix the wire to prevent it from being pulled. Accordingly, the two earcups are powered and controlled by the wires. The wires on the headband are restrained on the headband, and the wires inside the earcups are restrained inside the earcups, with only a portion of the wire exposed between the end member and the earcup, to prevent tangling.

[0073] Based on the above scheme, the headphones are differentiated into basic or high-end models by the configuration of the earcups.

[0074] The basic model is equipped with the following performance and specifications:

[0075] • Monitor with volume control

[0076] • Automatically activates sound compression function to reduce harmful noise.

[0077] • Noise reduction NRR 25dB, dual microphones

[0078] • Automatic shutdown function

[0079] • Compact earcups and comfortable headband

[0080] • Rubber coating

[0081] • AAA dry cell battery power supply

[0082] • Audio port with silicone cover

[0083] • 40 hours of usage time.

[0084] The high-end model is equipped with the following performance and specifications:

[0085] • 80 hours of usage time

[0086] • Automatic shutdown function

[0087] • Four built-in microphones enhance directional listening.

[0088] • Microphone windscreen reduces wind noise

[0089] • LDPE molded headband and removable inner padding ensure a snug fit and comfort.

[0090] • Dual power sources: rechargeable lithium battery and AAA dry cell batteries (shared battery compartment)

[0091] • Four listening modes: Universal, Clear Voice, High Freq, and Power Boost.

[0092] • The recessed control buttons and listening knob do not interfere with rifle firing.

[0093] • Compact design, cooling gel pad for lip care

[0094] • Dust and water resistant rating IP54

[0095] • Premium EVA outer box, with an inner mesh accessory storage bag.

[0096] • 13-level ambient sound monitoring and amplification • Automatic sound compression and harmful noise reduction function

[0097] • Bluetooth music streaming and phone calls

[0098] • Noise Reduction Level (NRR) 25dB (minimum, higher is better)

[0099] • Dual-channel independent control of media and monitoring functions

[0100] • USB-C charging, power port with silicone cover

[0101] • Rubber paint coating.

Claims

1. Headphones, including a headband (100), with an earcup (200) at each end of the headband, and a battery compartment (201) on each earcup, characterized in that: The battery compartment is designed to hold a dry cell battery (300). The headphones also include a lithium battery (400). The shape and specifications of the lithium battery are matched with the battery compartment (201) so that the lithium battery and the dry cell battery can be interchanged. The battery compartment is compatible with both lithium batteries and dry cell batteries.

2. The headphones according to claim 1, characterized in that: The battery compartment (201) is configured to accommodate 2-4 dry cell batteries (300) in parallel or series connection.

3. The headphones according to claim 1 or 2, characterized in that: The battery compartment (201) and the lithium battery (400) are equipped with a fault-proof mounting structure.

4. The earphone according to claim 3, characterized in that: The installation error prevention structure includes a guide groove (202) on the side wall of the battery compartment (201) and a protrusion (401) on the edge of the lithium battery (400). When the lithium battery is installed into the receiving cavity in the correct posture, the protrusion (401) and the guide groove (202) correspond to each other to allow installation. When the lithium battery is installed into the receiving cavity in the wrong posture, the protrusion (401) and the guide groove (202) are misaligned to prevent installation.

5. The headphones according to claim 1 or 2, characterized in that: A diode (503) is connected in series in the load circuit of the earphone.

6. The headphones according to claim 1 or 2, characterized in that: The lithium battery (400) includes a housing (402) and a core (403), and the housing (402) is provided with a charging interface for charging the core.

7. The earphone according to claim 1, characterized in that: The headband (100) has a detachable head strap (130) attached to the inside.

8. The headphones according to claim 7, characterized in that: The inner side of the headband (100) has a wire groove (115) covered by the headband (130), and wires (504) are arranged in the wire groove (115).

9. The headphones according to claim 1 or 7, characterized in that: The headband (100) includes a body (110) and an end member (120), and the earmuffs (200) are rotatably connected to the end member (120) via a connecting arm (600).

10. The earphone according to claim 9, characterized in that: The main body (110) includes two linear elastic elements (111), a skeleton (113), and a covering layer (114). The two linear elastic elements (111) maintain a distance and are constrained by the skeleton (113). The covering layer (114) covers the skeleton and / or the two linear elastic elements. Both ends of the two linear elastic elements extend out of the covering layer. The end members (120) are assembled to the extended ends of the two linear elastic elements (111).

11. The headphones according to claim 9, characterized in that: The end member (120) includes a first cover (121) and a second cover (122) that are fastened together, the first cover and the second cover clamping the ends of two linear elastic elements (111) from both sides and fastening them together with fasteners.

12. The headphones according to claim 11, characterized in that: The first cover (121) or / and the second cover (122) have a groove (123) and a blocking portion (124) located at the edge of the groove. The end of the linear elastic member (111) has a thick portion (112). The end of the linear elastic member (111) is constrained in the corresponding groove (123) by the first cover or / and the second cover. The blocking portion (124) prevents the thick portion (112) from being pulled out of the groove.

13. The headphones according to claim 11, characterized in that: The first cover (121) and / or the second cover (122) has a slot (125), and the connecting arm (600) includes a first arm (601) and a second arm (602) connected by a shaft segment (603), the shaft segment (603) being constrained in the slot (125) by the first cover and / or the second cover, and the first arm (601) and the second arm (602) being separately rotatably connected to the front and rear sides of an earmuff (200).

14. The headphones according to claim 13, characterized in that: The middle part of the shaft segment (603) has a bend (604), and the lower edges of the first cover and the second cover have notches (126). The bend (604) extends out of the first cover and the second cover at the notches (126) and is blocked axially by the end members.

15. The headphones according to claim 11, characterized in that: The inner side of the main body (110) has a wire groove (115). The fastening part of the first cover (121) and the second cover (122) has a first wire hole (127) and a second wire hole (128). The ear cup (200) is provided with a third wire hole (203). The wire groove (115) is arranged with a wire (504) connected to the battery box. The wire (504) is introduced into the end member (120) through the first wire hole (127), led out from the end member (120) through the second wire hole (128), and introduced into the ear cup (200) through the third wire hole (203).

16. The headphones according to claim 11, characterized in that: The first cover (121) and the second cover (122) are provided with snap-fit ​​feet (129) and snap-fit ​​grooves (1210) respectively. The snap-fit ​​feet (129) are inserted into the snap-fit ​​grooves (1210) to constrain the first cover and the second cover together. The snap-fit ​​feet and fasteners are distributed separately.

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