A clip-on headphone combination

By moving the charging terminal of the clip-on earphone from the bottom of the power supply section to the side away from the speaker section, and in conjunction with the horizontal housing design of the earphone charging case, the problems of oxidation and poor contact caused by sweat corrosion of the charging terminal are solved, improving the charging stability and reliability of the earphone.

CN224583296UActive Publication Date: 2026-07-31SHENZHEN ZERO ROAD INNOVATION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN ZERO ROAD INNOVATION TECH CO LTD
Filing Date
2025-08-18
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

The charging terminals of clip-on wireless earbuds are susceptible to corrosion from sweat due to their unreasonable placement, leading to oxidation, rust, and poor contact, which affects charging efficiency and lifespan, and poses a safety hazard.

Method used

The charging terminal has been moved from the bottom of the headphone's power section to the side away from the speaker, and in conjunction with the horizontal housing design of the headphone charging case, direct or indirect contact between the charging terminal and the user's skin has been avoided.

Benefits of technology

It significantly improves the charging stability and long-term reliability of the headphones, reduces the probability of safety hazards such as short circuits, and extends the service life of the headphones.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a clip-on earphone assembly, comprising: an earphone charging case, including a charging case body and a charging case cover; the charging case body having a receiving groove that matches the outer contour of the clip-on earphone; and a charging pin at the bottom of the receiving groove; the clip-on earphones, horizontally placed within the receiving groove; the clip-on earphones including a speaker, a power supply, and a connecting part; the connecting part connecting the speaker and the power supply; and a charging terminal on the side of the power supply away from the speaker that mates with the charging pin. This utility model, by moving the charging terminal from the bottom of the power supply to the side of the power supply away from the speaker, and in conjunction with the horizontal receiving design of the earphone charging case, fundamentally avoids direct or indirect contact between the charging terminal and the user's skin, thus solving problems such as oxidation, rust, and poor contact caused by sweat corrosion of the charging terminal.
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Description

Technical Field

[0001] This utility model relates to the field of headphone technology, specifically to a clip-on headphone assembly. Background Technology

[0002] Bluetooth headsets have matured significantly and have rapidly diversified into various market segments. Clip-on and over-ear headphones are among the most common types of Bluetooth headsets.

[0003] Most mainstream clip-on wireless earbuds consist of a speaker, a power supply, and a connector. The connector is made of a soft material and connects the speaker and the power supply. To facilitate charging when placed vertically downwards in the charging case, clip-on wireless earbuds typically have the charging terminal fixed at the bottom of the power supply. However, this design reveals significant drawbacks in actual wearing scenarios.

[0004] When users wear clip-on wireless earbuds, the power supply unit, as a key load-bearing component in contact with the ear, inevitably comes into direct or indirect contact with the user's skin, auricular cartilage, or surrounding hair. Especially during exercise, prolonged wear, or in high-temperature environments, sweat easily accumulates on the ears and head. The salt and oil in sweat adhere directly to the exposed charging terminal surface. Over time, the corrosive components in sweat gradually erode the metal contacts of the charging terminal, causing oxidation, rust, or poor contact. This directly affects the earbuds' charging efficiency and lifespan, and may even lead to safety hazards such as short circuits, causing numerous inconveniences for users and device maintenance. Utility Model Content

[0005] In order to overcome the problems of charging terminals in existing clip-on wireless earphones being susceptible to corrosion by sweat due to unreasonable placement design, which affects charging efficiency, service life and poses safety hazards, this utility model provides a clip-on earphone assembly.

[0006] The technical solution of this utility model is as follows:

[0007] An ear-clip headphone assembly, comprising:

[0008] The earphone charging case includes a charging case body and a charging case cover. The charging case body is provided with a receiving groove that matches the outer contour of the earphone. A charging spring pin is provided at the bottom of the receiving groove.

[0009] The ear-clip earphone is placed horizontally in the receiving slot. The ear-clip earphone includes a speaker, a power supply, and a connecting part. The connecting part connects the speaker and the power supply. The power supply has a charging terminal that mates with the charging spring pin on the side away from the speaker.

[0010] As a preferred embodiment of this utility model, two clip-on earphones are provided, namely a left clip-on earphone and a right clip-on earphone;

[0011] The charging case body has two symmetrically arranged receiving slots on the left and right sides. The left clip-on earphone is placed horizontally in the receiving slot on the left side, and the right clip-on earphone is placed horizontally in the receiving slot on the right side.

[0012] As a preferred embodiment of this utility model, the accommodating groove on the left is used to place one end of the connecting part of the left clip-on earphone facing the left rear corner of the charging case body, and the accommodating groove on the right is used to place one end of the connecting part of the right clip-on earphone facing the right rear corner of the charging case body.

[0013] As a preferred embodiment of this utility model, the charging box battery inside the charging box body is vertically arranged at the rear end between the two receiving slots.

[0014] As a preferred embodiment of this utility model, the top of the charging box body is provided with a cut surface so that the height of the charging box body gradually increases from front to back;

[0015] When the left clip-on earphone is placed in the left-side receiving slot, one side of the connecting part and the speaker part of the left clip-on earphone are located outside the left-side receiving slot; when the right clip-on earphone is placed in the right-side receiving slot, one side of the connecting part and the speaker part of the right clip-on earphone are located outside the right-side receiving slot.

[0016] As a preferred embodiment of this utility model, the top edge contour of the charging box body matches the bottom edge hub of the charging box cover.

[0017] As a preferred embodiment of this utility model, the charging box body includes a bottom shell and a top shell disposed on the top of the bottom shell. The top shell is provided with the receiving groove. The charging box battery and the charging box circuit board are disposed between the bottom shell and the top shell. A charging interface is provided on one side of the bottom shell. The charging box circuit board is electrically connected to the charging box battery, the charging interface and the charging spring pin respectively.

[0018] As a preferred embodiment of this utility model, the connecting part is a metal coil spring, which is bent and shaped into an ergonomic arc or U-shape. The two ends of the metal coil spring move closer or further apart through deformation, and the inner cavity of the metal coil spring serves as the wiring channel for the clip-on headphones.

[0019] As a preferred embodiment of this utility model, the power supply unit is provided with an earphone circuit board and an earphone battery. The side of the power supply unit away from the speaker is provided with a charging hole for the charging terminal to pass through. The earphone circuit board is electrically connected to the earphone battery and the charging terminal respectively.

[0020] As a preferred embodiment of this utility model, a loudspeaker is provided inside the sound-emitting section, and the loudspeaker and the circuit board are electrically connected by a flexible circuit.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] The clip-on earphone assembly provided by this utility model fundamentally avoids direct or indirect contact between the charging terminal and the user's skin by moving the charging terminal from the bottom of the earphone's power supply to the side of the power supply away from the speaker, and in conjunction with the horizontal housing design of the earphone charging case. This solves problems such as oxidation, rust, and poor contact caused by sweat corrosion of the charging terminal, significantly improves the charging stability and long-term reliability of the earphone, and reduces the probability of safety hazards such as short circuits. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a clip-on earphone assembly in one embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the headphone charging case in one embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of a left-clamping earphone in one embodiment of the present invention;

[0027] Figure 4 This is an exploded view of the earphone charging case in one embodiment of the present invention;

[0028] Figure 5 This is a cross-sectional view of a left-clamping earphone in one embodiment of the present invention.

[0029] In the diagram,

[0030] 1. Earphone charging case; 11. Charging case body; 111. Receptacle slot; 112. Charging spring pin; 113. Cross-section; 114. Bottom shell; 115. Top shell; 116. Charging case battery; 117. Charging case circuit board; 118. Charging interface; 12. Charging case lid; 2. Left clip-on earphone; 21. Speaker; 211. Speaker; 22. Power supply; 221. Charging terminal; 222. Earphone circuit board; 223. Earphone battery; 224. Charging hole; 23. Connector; 231. Wiring channel; 3. Right clip-on earphone. Detailed Implementation

[0031] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. It is also declared that the embodiments described below are only for explaining this utility model and are not intended to limit this utility model.

[0032] It should be noted that the terms "installation," "setting," "connection," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly defined. Indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or component 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 application. The terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features.

[0033] Please see Figures 1 to 3This utility model provides an ear-clamping headphone assembly, including an earphone charging case 1, a left ear-clamping earphone 2, and a right ear-clamping earphone 3. The earphone charging case 1 includes a charging case body 11 and a charging case cover 12. The charging case body 11 has two symmetrically arranged receiving slots 111, which respectively mate with the outer contours of the left ear-clamping earphone 2 and the right ear-clamping earphone 3. Each of the two receiving slots 111 has a charging spring pin 112 at the bottom. The left ear-clamping earphone 2 is placed horizontally in the left receiving slot 111, and the right ear-clamping earphone 3 is placed horizontally in the right receiving slot 111. Both the left ear-clamping earphone 2 and the right ear-clamping earphone 3 include a speaker 21, a power supply 22, and a connecting part 23. The connecting part 23 connects the speaker 21 and the power supply 22. The side of the power supply 22 away from the speaker 21 has a charging terminal 221 that mates with the charging spring pin 112.

[0034] In this embodiment, by moving the charging terminal 221 from the bottom of the power supply unit 22 to the side of the power supply unit 22 away from the speaker unit 21, and in conjunction with the horizontal housing design of the earphone charging case 1, the direct or indirect contact between the charging terminal 221 and the user's skin is fundamentally avoided. This solves the problems of oxidation, rust, and poor contact caused by sweat corrosion of the charging terminal 221, significantly improves the charging stability and long-term reliability of the earphone, and reduces the probability of safety hazards such as short circuits.

[0035] Please see Figure 2 In one embodiment, the left-side receiving slot 111 is used to place one end of the connecting portion 23 of the left clip-on earphone 2 facing the left rear corner of the charging case body 11, and the right-side receiving slot 111 is used to place one end of the connecting portion 23 of the right clip-on earphone 3 facing the right rear corner of the charging case body 11. The two receiving slots 111 provided above can make full use of the space of the charging case body 11, making the layout of the left clip-on earphone 2 and the right clip-on earphone 3 in the earphone charging case 1 more reasonable, achieving stable placement of the earphones in a limited space and avoiding space waste.

[0036] For further details, please refer to Figure 4 The charging case battery 116 inside the charging case body 11 is vertically arranged at the rear end between the two receiving slots 111. By placing the charging case battery 116 at the rear end between the two receiving slots 111, it will not affect the placement and charging of the earphones in the receiving slots 111, and the position of each component inside the earphone charging case 1 can be reasonably planned, making the overall structure of the charging case more compact and reasonable.

[0037] Please see Figure 2In one embodiment, the top of the charging case body 11 is provided with a chamfer 113 so that the height of the charging case body 11 gradually increases from front to back. When the left clip-on earphone 2 is placed in the left receiving slot 111, one side of the connecting part 23 and the speaker part 21 of the left clip-on earphone 2 are located outside the left receiving slot 111; when the right clip-on earphone 3 is placed in the right receiving slot 111, one side of the connecting part 23 and the speaker part 21 of the right clip-on earphone 3 are located outside the right receiving slot 111. With the above arrangement, the user does not need to insert their fingers into the receiving slot 111 to search for the earphones, but can easily take out the earphones by grasping the connecting part 23 or the speaker part 21 from the outside, which greatly improves the convenience and efficiency of use and enhances the user experience.

[0038] In one embodiment, the top edge contour of the charging case body 11 mates with the bottom edge hub of the charging case lid 12. This contour-matching design of the charging case body 11 and the charging case lid 12 ensures a tighter connection between them. When the charging case lid 12 is closed, the precise fit of the edge contours effectively reduces the possibility of external impurities such as dust and moisture entering the earphone charging case 1, providing better protection for the left clip-on earphone 2 and right clip-on earphone 3 placed inside, reducing the risk of damage to the earphones due to contact with impurities, and extending the earphones' lifespan.

[0039] Please see Figure 4 In one embodiment, the charging case body 11 includes a bottom shell 114 and a top shell 115 disposed on top of the bottom shell 114. The top shell 115 has a receiving groove 111. A charging case battery 116 and a charging case circuit board 117 are disposed between the bottom shell 114 and the top shell 115. A charging interface 118 is provided on one side of the bottom shell 114. The charging case circuit board 117 is electrically connected to the charging case battery 116, the charging interface 118, and the charging pins 112, thus achieving an integrated design of the charging function. Users can charge the charging case battery 116 through the charging interface 118, and the charging case battery 116 can then charge the earphones placed in the receiving groove 111, forming a complete charging system.

[0040] Please see Figure 3 , Figure 5In one embodiment, the connecting part 23 is a metal coil spring. The metal coil spring is bent and shaped into an ergonomic arc or U-shape. The two ends of the metal coil spring move closer or further apart through deformation. The inner cavity of the metal coil spring serves as the wiring channel 231 for the clip-on earphone. The metal coil spring is preferably made of piano wire, which has high strength, high elastic limit, and good fatigue resistance. This ensures that the connecting part 23 maintains good elasticity and stability even after repeated deformation, effectively extending the service life of the connecting part 23. This, in turn, improves the reliability and durability of the entire clip-on earphone and reduces earphone malfunctions caused by spring damage. Furthermore, the metal coil spring does not require a soft rubber wrapping, which reduces potential problems such as aging and detachment caused by the soft rubber, and simplifies the manufacturing process and structure, thus reducing costs. By placing the wiring between the power supply section 22 and the speaker section 21 within the inner cavity of the metal coil spring, space is effectively utilized, making the internal layout of the headphones more reasonable. This facilitates miniaturization or the inclusion of more functional modules, while also showcasing a unique metallic technological feel, providing users with a novel visual experience, increasing the product's fun and appeal, and making the product more distinctive in both appearance and user experience.

[0041] Please see Figure 5 In one embodiment, the power supply unit 22 houses an earphone circuit board 222 and an earphone battery 223. A charging port 224 for the charging terminal 221 to pass through is located on the side of the power supply unit 22 away from the speaker unit 21. The earphone circuit board 222 is electrically connected to both the earphone battery 223 and the charging terminal 221, forming a charging circuit. When the charging terminal 221 contacts the charging pin 112 of the charging case body 11, current can be transmitted through the charging terminal 221 to the earphone circuit board 222. The earphone circuit board 222 then manages the charging of the earphone battery 223, such as controlling the charging current and voltage to prevent overcharging, thereby ensuring the safe charging and normal use of the earphone battery 223 and extending its lifespan. The speaker unit 21 houses a speaker 211, which is electrically connected to the circuit board via a flexible circuit.

[0042] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

[0043] The present utility model patent has been described above with reference to the accompanying drawings. Obviously, the implementation of the present utility model patent is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present utility model patent, or the direct application of the inventive concept and technical solution of the present utility model patent to other occasions without modification, are all within the protection scope of the present utility model.

Claims

1. A clip-on earphone assembly, characterized in that, include: The earphone charging case includes a charging case body and a charging case cover. The charging case body is provided with a receiving groove that matches the outer contour of the earphone. A charging spring pin is provided at the bottom of the receiving groove. The ear-clip earphone is placed horizontally in the receiving slot. The ear-clip earphone includes a speaker, a power supply, and a connecting part. The connecting part connects the speaker and the power supply. The power supply has a charging terminal that mates with the charging spring pin on the side away from the speaker.

2. The earphone set according to claim 1, wherein There are two clip-on earphones: a left clip-on earphone and a right clip-on earphone. The charging case body has two symmetrically arranged receiving slots on the left and right sides. The left clip-on earphone is placed horizontally in the receiving slot on the left side, and the right clip-on earphone is placed horizontally in the receiving slot on the right side.

3. The earphone set according to claim 2, wherein The left-side receiving slot is used to place one end of the connecting part of the left clip-on earphone facing the left rear corner of the charging case body, and the right-side receiving slot is used to place one end of the connecting part of the right clip-on earphone facing the right rear corner of the charging case body.

4. The earphone set according to claim 3, wherein The charging box battery inside the charging box body is vertically arranged at the rear end between the two receiving slots.

5. The earphone set according to claim 3, wherein The top of the charging case body is provided with a cut surface so that the height of the charging case body gradually increases from front to back; When the left clip-on earphone is placed in the left-side receiving slot, one side of the connecting part and the speaker part of the left clip-on earphone are located outside the left-side receiving slot; when the right clip-on earphone is placed in the right-side receiving slot, one side of the connecting part and the speaker part of the right clip-on earphone are located outside the right-side receiving slot.

6. The earphone set according to claim 1, wherein The top edge contour of the charging case body matches the bottom edge hub of the charging case cover.

7. The earphone set according to claim 1, wherein The charging box body includes a bottom shell and a top shell disposed on the top of the bottom shell. The top shell is provided with the receiving groove. The charging box battery and the charging box circuit board are disposed between the bottom shell and the top shell. A charging interface is provided on one side of the bottom shell. The charging box circuit board is electrically connected to the charging box battery, the charging interface and the charging spring pin respectively.

8. The earphone set according to claim 1, wherein The connecting part is a metal coil spring, which is bent and shaped into an ergonomic arc or U-shape. The two ends of the metal coil spring move closer or further apart through deformation. The inner cavity of the metal coil spring serves as the wiring channel for the clip-on headphones.

9. The earphone set according to claim 1, wherein The power supply unit contains an earphone circuit board and an earphone battery. The side of the power supply unit away from the speaker unit has a charging hole through which the charging terminal passes. The earphone circuit board is electrically connected to the earphone battery and the charging terminal respectively.

10. The ear-clamping headphone assembly according to claim 9, characterized in that, The speaker is installed inside the sound-emitting section, and the speaker and the circuit board are electrically connected by flexible circuits.