A detachable headphone

Abstract

This utility model discloses a detachable earphone, belonging to the field of consumer electronics technology. The earphone includes an earphone body, a connector, an annular conductive base, a battery holder, a conductive plate, and a cover. The connector is fixed to the tail end of the earphone body, and its mounting groove has a positive contact and a negative contact. The annular conductive base is placed in the mounting groove and electrically connected to the negative contact. Its center is hollow to expose the positive contact, and the annular conductive base has symmetrically arranged first latches. The battery holder is embedded in the mounting groove, and its inner wall has a second latch that mates with the first latch; the two are fixed together by a snap-fit. The conductive plate is fixed in the second latch, and its center is electrically connected to the positive contact. The cover is detachably connected to the connector via threads to seal the battery holder. The mechanical snap-fit ​​replaces the traditional spring structure, and the threaded locking provides stable axial pressure, completely solving the problems of poor battery contact and abnormal noise, and improving connection reliability and durability.

Description

Technical Field

[0001] This utility model relates to the field of consumer electronics technology, and in particular to a detachable earphone. Background Technology

[0002] With the rapid development of wireless communication technology, Bluetooth headsets have become an indispensable electronic product in people's daily lives. In pursuit of ultimate portability and long battery life, various types of Bluetooth headsets have emerged. Among them, some high-end or special-purpose headsets, such as ear-hook sports headphones or modular headphones, have adopted a replaceable battery design to solve the problem of limited battery life on a single charge. Users can quickly replace the main battery with a pre-prepared spare battery, thus achieving near-unlimited battery life and greatly improving the user experience.

[0003] In existing replaceable battery headphone designs, the electrical connection between the battery and the headphone's main circuitry is typically achieved using a spring or a flexible metal sheet (commonly known as a spring). Specifically, a coil spring or a flexible metal sheet is installed at one electrode (usually the negative terminal) inside the battery compartment. When the battery is inserted and the battery cover is closed, the spring or sheet is compressed. Its elasticity presses the other electrode of the battery firmly against the corresponding fixed contact to establish an electrical path. Furthermore, its continuous pressure secures the battery within the battery compartment, preventing it from shifting.

[0004] However, this commonly used spring-loaded connection structure has inherent drawbacks, which are significantly amplified, especially in applications requiring frequent disassembly and battery replacement.

[0005] Poor connection reliability and short lifespan: As an elastic element, the core of a spring or spring lies in the elastic deformation capability of the metal material. During frequent battery replacements, the spring repeatedly undergoes compression and rebound. Based on the physical properties of metal materials, this repeated stress cycle leads to metal fatigue. With increasing usage time, the spring's elastic modulus gradually decreases, and the elastic force inevitably weakens. The direct consequence of weakened elastic force is insufficient contact pressure between the battery and the electrode contacts, potentially leading to increased contact resistance, or even momentary power outages or complete contact failure, severely affecting the normal use of the headphones.

[0006] Structural noises are likely to occur: As the spring force diminishes due to aging, the clamping force applied to the battery also decreases. At this point, the battery cannot be securely fixed in its intended position within the battery compartment. When users wear headphones and engage in activities such as walking or running, the body's movement can easily cause the battery to shift and collide internally, producing annoying "clicking" or "clunking" noises. This noise not only ruins the immersive audio experience but also gives users a sense of cheap, poor-quality product quality.

[0007] Therefore, how to design a new battery connection structure to replace the traditional spring structure, thereby completely solving the problems of poor contact and abnormal battery noise caused by spring failure while ensuring connection reliability, is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0008] The main purpose of this utility model is to overcome the above-mentioned defects in the prior art and provide a detachable earphone that adopts a brand-new non-spring mechanical locking and electrical connection integrated structure, aiming to solve the technical problems of unstable electrical connection and abnormal noise caused by battery shaking due to spring aging and failure.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A detachable earphone, characterized in that it comprises:

[0011] Earphone body;

[0012] A connector is fixed to the tail end of the earphone body. The connector has a mounting groove, and a positive contact and a negative contact are provided in the mounting groove.

[0013] An annular conductive base is disposed in the mounting groove and electrically connected to the negative electrode contact. The center of the annular conductive base is hollow to expose the positive electrode contact. A first bayonet is provided on the annular conductive base.

[0014] A battery holder is disposed in the mounting groove and has a second slot that mates with the first slot. The annular conductive seat and the battery holder are fixed together by the engagement of the first slot and the second slot.

[0015] A conductive piece is mechanically fixed within the second bayonet, its position is precisely defined, and the middle part of the conductive piece is used for electrical connection with the positive terminal of the battery and the positive terminal contact.

[0016] The cover is detachably connected to the connector and is used to seal the battery holder within the mounting groove.

[0017] As a further optimization of this utility model, the connector and the earphone body are integrally molded. This design simplifies the manufacturing process, reduces assembly seams, makes the overall structure of the earphone more robust and durable, and improves its waterproof and dustproof performance.

[0018] As a further optimization of this invention, the annular conductive base is in the shape of a cap, with its bottom periphery abutting against the negative electrode contact. This surface contact or annular line contact method, compared to the point contact of a traditional spring, provides a larger contact area, a more uniform current distribution, and a more reliable and stable connection.

[0019] As a further optimization of this utility model, a groove is provided on the bottom periphery of the battery holder, and the annular conductive seat is inserted into the groove; the second locking slot is provided on the inner wall of the groove. This groove-type design provides precise radial and axial positioning for the annular conductive seat, ensuring the accuracy of subsequent locking.

[0020] As a further optimization of this utility model, a gap is provided on the second bayonet, through which the surface of the first bayonet is exposed into the second bayonet. This gap is an ingenious design; it is part of the snap-fit ​​structure on the one hand, and on the other hand, it provides tolerance allowance for component deformation and installation, making the snap-fit ​​process smoother.

[0021] As a further optimization of this utility model, two first bayonets are symmetrically arranged on the annular conductive base; the two ends of the conductive piece are respectively engaged in the two second bayonets. The symmetrical bayonet design ensures that the locking force is evenly distributed, avoiding structural skewing or stress concentration problems that may be caused by unilateral force, and further enhancing the stability and reliability of the entire connection structure.

[0022] As a further feasible solution of this utility model, a battery slot for accommodating a cylindrical battery is provided inside the cover, and the cover is connected to the connecting seat by a threaded connection. The threaded connection can provide a very strong and stable axial locking force, ensuring that after the cover is closed, all internal components such as the battery, conductive plate, battery holder, and annular conductive seat can be firmly pressed together, thereby ensuring that all electrical contact points are in a stable and reliable compacted state.

[0023] The beneficial effects of this utility model are as follows:

[0024] High reliability and ultra-long durability: This invention replaces the spring, which is prone to fatigue failure, with a rigid mechanical locking structure. Once locked, this locking structure forms a stable, rigid connection, and its physical properties do not degrade with repeated use. This fundamentally solves the lifespan bottleneck of traditional solutions, enabling the headphones to withstand far more frequent battery replacements than traditional designs, greatly improving the product's reliability and durability.

[0025] Completely eliminates internal noise: Through the precise locking mechanism between the annular conductive base and the battery holder, the battery holder is firmly locked within the connector, preventing any radial or axial displacement. The battery is tightly housed within the battery holder, thus completely eliminating internal noise caused by battery loosening or shaking, providing users with a quiet, high-quality wearing and listening experience.

[0026] The electrical connection is extremely stable: both positive and negative electrical paths are achieved through structural compression. The threaded locking force of the cover provides continuous and stable contact pressure, ensuring that the contact resistance between the conductive plate and the positive contact, and between the annular conductive base and the negative contact is extremely small and constant. This avoids problems such as audio interruption, current noise, or device restart caused by poor contact, and guarantees the stable performance of the headphones. Attached Figure Description

[0027] Figure 1 This is an exploded view of the structure of a detachable earphone in one embodiment of the present invention.

[0028] Figure 2 This is a cross-sectional structural diagram of the connecting seat and the annular conductive seat after assembly in an embodiment of this utility model.

[0029] Figure 3 This is a schematic cross-sectional view of the battery holder, the annular conductive seat, and the conductive sheet assembled in an embodiment of this utility model.

[0030] Figure 4 This is a cross-sectional schematic diagram of the complete connection structure in the closed state of the cover in an embodiment of this utility model.

[0031] Figure 5 This is a three-dimensional structural diagram of the annular conductive base in an embodiment of this utility model.

[0032] Figure 6 This is a three-dimensional structural diagram of the battery holder in an embodiment of this utility model.

[0033] Figure 7 This is a three-dimensional structural diagram of the conductive piece in an embodiment of this utility model.

[0034] Figure 8 This is a three-dimensional structural diagram of the detachable earphone in an embodiment of this utility model.

[0035] In the attached diagram, the numbers represent: 1-earphone body; 2-connector; 21-mounting slot; 22-positive contact; 23-negative contact; 3-battery holder; 31-slot; 4-conductive piece; 5-cover; 51-battery slot; 6-ring conductive seat; 61-first bayonet; 71-second bayonet; 72-gap; 8-battery. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the detachable earphone of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0037] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "center," "longitudinal," "lateral," "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art will be able to understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments described in this section are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Any non-substantial improvements and adjustments made by those skilled in the art under the guidance of the spirit of this utility model should fall within the scope of protection of this utility model.

[0040] Example 1

[0041] Please see Figures 1 to 8 This embodiment provides a detachable headset, which is mainly used in scenarios that require long-term wear and work, such as sports and fitness, outdoor hiking or professional monitoring.

[0042] like Figure 1As shown, the earphone mainly consists of an ear-hook type earphone body (1), with a connecting seat (2) fixedly installed at its tail end. To achieve structural integrity and robustness, in this preferred embodiment, the connecting seat (2) and the earphone body (1) are integrally molded, for example by injection molding, and the material can be engineering plastics such as PC, ABS, or their alloys. This integrated design avoids the seams and assembly errors that may exist in traditional split structures, greatly enhancing the product's durability and impact resistance.

[0043] Please combine Figure 1 , Figure 2 as well as Figure 8 To understand this, the core function of the connector (2) is to accommodate the battery connection assembly. Therefore, a roughly cylindrical mounting groove (21) is designed to be excavated in the center of the connector (2). At the bottom of the mounting groove (21), the electrode contacts of the circuit are pre-set. Specifically, a raised cylindrical positive contact (22) is located at the very center of the mounting groove (21), while a ring-shaped negative contact (23) is located on its outer bottom surface. These two contacts (22, 23) are connected to the power management circuit on the headphone mainboard via internal wires.

[0044] Next is one of the core components of this utility model—the annular conductive base (6), the structure of which can be found in [link to relevant documentation]. Figure 5 The annular conductive base (6) is shaped like a cap with a central through hole and is made of conductive metal material (such as brass, phosphor bronze, etc.). The diameter of the central through hole (i.e., the hollow structure) is slightly larger than the diameter of the positive contact (22), ensuring that when it is placed at the bottom of the mounting groove (21), the positive contact (22) can pass through and be exposed, without contacting each other, thus maintaining electrical insulation. The flat bottom surface of the annular conductive base (6) completely covers and fits tightly against the annular negative contact (23), forming a stable and reliable negative electrical path through surface contact. To achieve subsequent mechanical locking, two first bayonets (61) are symmetrically provided on the outer wall of the annular conductive base (6).

[0045] Then there is another core component—the battery holder (3), the structure of which can be found in [link to relevant documentation]. Figure 6The main function of the battery holder (3) is to support and position the battery (8). It is also roughly cylindrical or annular in shape, with its inner diameter matching the outer diameter of the battery (8) (e.g., a 10440 lithium battery). Its key structure is located on its bottom periphery, where an inwardly recessed annular groove (31) is designed. The size of this groove (31) is precisely matched with the shape of the annular conductive seat (6), so that the annular conductive seat (6) can be completely and tightly embedded into this groove (31). On the inner wall of the groove (31), two grooves are also symmetrically excavated to accommodate the first latch (61), and these two grooves constitute the second latch (71). When the battery holder (3) is pressed into the mounting groove (21) where the annular conductive seat (6) is installed, the battery holder (3) will cause the first latch (61) on the annular conductive seat (6) to engage with the second latch (71) in its own groove (31). This snap-fit ​​connection can be a pin-type structure that locks by rotating at a certain angle, or a snap-fit ​​structure with chamfers that relies on the elastic deformation of the material to be directly pressed in. Once snapped in place, the battery holder (3) and the annular conductive seat (6) are firmly locked together, preventing easy axial or radial relative displacement. To facilitate snap-fit, a small gap (72) can be provided at the second snap-fit ​​opening (71) to provide buffer space for deformation during the snap-fit ​​process.

[0046] Next, we will introduce the conductive piece (4). For its structure, please refer to [link to relevant documentation]. Figure 7 The conductive piece (4) is a separate, irregularly shaped metal piece made of a highly conductive metal (such as beryllium copper). Its center arches upwards, forming a smooth protrusion for elastic bridging with the positive terminal of the battery (8) and the positive contact (22) of the earphone. Both ends can be stably snapped into the structure containing the second latch (71) of the battery holder (3). Importantly, the conductive piece (4) here serves only as a conductor for the positive terminal path and is precisely positioned through mechanical fixation to the battery holder (3). It must maintain electrical insulation from the annular conductive base (6), which is part of the negative terminal path, and its first latch (61). This is ensured through structural design (e.g., providing an insulating layer at the contact point or using a non-conductive battery holder body for isolation), thereby preventing power short circuits.

[0047] Finally, there is the cover (5). Inside the cover (5) is a battery slot (51) that matches the size of the battery (8). Its outer edge is machined with an internal thread that mates with the external thread machined at the opening of the upper part of the connector (2).

[0048] Assembly and Workflow

[0049] In actual use, the steps for users to replace the battery are as follows:

[0050] Unscrew the cover: The user rotates counterclockwise to remove the cover (5).

[0051] Replace the battery: Remove the old battery (8) from the battery slot (51) and insert a new fully charged battery.

[0052] Tighten the cover: Align the cover (5) containing the new battery with the threads of the connector (2) and tighten clockwise.

[0053] The core working principle of this utility model is demonstrated during the tightening of the cover (5). Please refer to [link / reference]. Figure 4 Closed state cross-sectional view:

[0054] The threaded connection of the cover (5) provides strong and stable axial pressure.

[0055] The pressure is first applied to the bottom of the battery (8). The battery (8), acting as a rigid force-transmitting body, pushes the entire internal assembly downwards.

[0056] The positive terminal (usually the raised end) of the battery (8) is pressed against the arched starting point in the middle of the conductive piece (4).

[0057] The conductive piece (4) is pressed downwards, and its bottom surface presses firmly against the positive contact (22) of the headphone connector (2). At this point, a stable positive electrical path is established from "battery positive terminal -> conductive piece -> positive contact".

[0058] Meanwhile, the negative terminal (usually the flat bottom end) of the battery (8) is pressed tightly against the upper surface of the annular conductive seat (6) which is already locked with the battery holder (3).

[0059] As a single conductive component, the bottom of the annular conductive base (6) is already in close contact with the negative electrode contact (23). Thus, the negative electrode electrical path from "battery negative electrode -> annular conductive base -> negative electrode contact" is stably established.

[0060] Throughout the process, all components are firmly pressed together by the threaded force, with no gaps allowing for free movement. The bayonet structure between the battery holder (3) and the annular conductive seat (6) provides a robust radial restraint, preventing any form of wobbling. Therefore, no abnormal noises are generated inside the headphones regardless of the user's movement, and the electrical connection remains highly stable at all times.

[0061] In summary, this utility model, through a sophisticated combination of mechanical snap-fit ​​and rigid clamping structure, perfectly replaces the traditional spring connection method, successfully solving many problems existing in the prior art, and providing a high-performance and excellent battery connection solution for detachable headphones.

[0062] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A detachable earphone, characterized by, include: Earphone body (1); A connector (2) is fixed to the tail end of the earphone body (1). The connector (2) has an installation groove (21) and a positive contact (22) and a negative contact (23) are provided in the installation groove (21). An annular conductive seat (6) is disposed in the mounting groove (21) and electrically connected to the negative electrode contact (23). The center of the annular conductive seat (6) is hollow to expose the positive electrode contact (22). A first bayonet (61) is provided on the annular conductive seat (6). Battery holder (3), the battery holder (3) is disposed in the mounting groove (21), and a second slot (71) is provided thereon to cooperate with the first slot (61). The annular conductive seat (6) and the battery holder (3) are fixed by the engagement of the first slot (61) and the second slot (71). Conductive piece (4), the conductive piece (4) is disposed in the second bayonet (71), and the middle part of the conductive piece (4) is electrically connected to the positive contact (22); The cover (5) is detachably connected to the connecting seat (2) and is used to seal the battery holder (3) in the mounting groove (21).

2. The detachable earphone of claim 1, wherein, The connector (2) and the earphone body (1) are integrally molded.

3. The detachable earphone of claim 1, wherein, The annular conductive base (6) is in the shape of a cap, and its bottom periphery abuts against the negative electrode contact (23).

4. The detachable earphone of claim 1, wherein, The bottom periphery of the battery holder (3) is provided with a slot (31), and the annular conductive seat (6) is inserted into the slot (31); the second slot (71) is provided on the inner wall of the slot (31).

5. The detachable earphone of claim 4, wherein, The second bayonet (71) has a slit (72) through which the surface of the first bayonet (61) is exposed to the second bayonet (71).

6. The detachable earphone of claim 1 or 5, wherein, Two first bayonet slots (61) are symmetrically arranged on the annular conductive base (6); the two ends of the conductive piece (4) are respectively snapped into the two second bayonet slots (71) and electrically connected to the two first bayonet slots (61).

7. The detachable earphone of claim 1, wherein, The cover (5) is provided with a battery slot (51) for accommodating the cylindrical battery, and the cover (5) is connected to the connecting seat (2) by a threaded connection.

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