Bone conduction vibrator with through-hole structure and finished product device
By introducing a through-hole structure into the bone conduction oscillator, the problems of poor heat dissipation and complex assembly are solved, improving heat dissipation performance and assembly efficiency, reducing manufacturing costs, and making it suitable for a variety of smart wearable devices.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN NEW LISTENING TECH CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-06-02
AI Technical Summary
Existing bone conduction transducer speakers suffer from problems such as poor heat dissipation, complex structure, difficult assembly, and high cost, which affect sound stability and service life, especially when driven by high current or working for a long time.
Design a bone conduction oscillator with a through-hole structure, including a support shell, spring, U-shaped iron, magnet, magnetic conductive sheet, coil and PCB board, all of which are provided with through holes to form a hollow conductive channel, which improves heat dissipation performance and simplifies the assembly process.
This design achieves higher heat dissipation efficiency, more stable vibration transmission, and more compact assembly, while reducing assembly processes and manufacturing costs. It solves the performance degradation problem caused by heat accumulation in enclosed structures in traditional structures, simplifies assembly processes, and reduces manufacturing costs.
Smart Images
Figure CN224319509U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of audio, specifically to a bone conduction vibrator with a through-hole structure and related equipment. Background Technology
[0002] Bone conduction transducers, as electroacoustic devices that convert electrical signals into mechanical vibrations and transmit sound through the skull or teeth, have been widely used in bone conduction headphones, smart glasses, hearing aids, and other products in recent years. Their main advantage is that they do not require the external ear to transmit sound signals, enabling clear sound perception without obstructing the ear canal, making them suitable for wearing in special scenarios and for hearing assistance needs.
[0003] Most existing bone conduction transducer horn structures are closed designs with compact overall construction, but they generally suffer from the following drawbacks:
[0004] First, the internal components are tightly packed but lack good heat dissipation channels. Under conditions of large coil drive current or long-term operation, the magnet or coil is prone to overheating, affecting the sound stability and product lifespan.
[0005] Secondly, traditional oscillator structures usually require additional space in the outer shell to accommodate the amplitude changes of vibrating components such as magnets, U-shaped irons, and springs, resulting in complex assembly and poor adaptability to the overall housing structure.
[0006] Third, when used inside the housing of headphones or glasses, traditional oscillators often require additional structures for vibration isolation or limiting, which increases the overall design and manufacturing cost and is not conducive to large-scale automated production. Summary of the Invention
[0007] To address the aforementioned issues, this invention provides a bone conduction oscillator and related equipment with a through-hole structure. This oscillator features a hollow structure with through holes, facilitates heat dissipation, improves assembly efficiency, and is compatible with various finished product housing shapes.
[0008] This utility model is achieved through the following technical solution: a bone conduction oscillator with a through hole, comprising:
[0009] The bracket housing is a hollow structure with a first through hole, used to accommodate internal components and serve as a vibration transmission path;
[0010] The spring clip is installed inside the bracket housing;
[0011] A U-shaped iron is disposed below the spring piece and magnetically cooperates with the magnet to form a magnetic circuit system.
[0012] A magnet is located below the U-shaped iron.
[0013] A magnetic conductive sheet is disposed between the magnet and the coil or at an adjacent position to enhance the magnetic circuit efficiency;
[0014] A coil, wound around the periphery of the magnet or disposed between the magnet and the bracket housing, is used to receive electroacoustic signals;
[0015] A PCB board is mounted on one end of the bracket housing and electrically connected to the coil for inputting external drive signals;
[0016] A cover fits over the other end of the bracket housing and is in contact with or indirectly connected to the spring clip; the cover also has a through-hole structure.
[0017] The bracket shell, spring, U-shaped iron, magnet, magnetic conductive sheet, face cover and PCB board are all provided with the first through hole aligned with each other. The first through hole runs through the entire bone conduction vibrator speaker structure, forming a hollow conductive channel to improve heat dissipation performance and adapt to the shape of the finished product equipment.
[0018] As a preferred technical solution, the bracket shell is cylindrical, elliptical, or racetrack-shaped.
[0019] As a preferred technical solution, the coil and the magnet are arranged opposite each other. After the coil is energized, the U-shaped iron and the magnet are driven to generate axial or radial vibration as a whole through magneto-electric induction.
[0020] As a preferred technical solution, the spring is positioned above the U-shaped iron and vibrates synchronously with the U-shaped iron and the magnet during vibration, forming a composite vibration structure.
[0021] As a preferred technical solution, the cover is snapped or heat-pressed to the bracket housing to form a sealed structure.
[0022] As a preferred technical solution, the PCB board is electrically connected to the coil terminals by soldering.
[0023] As a preferred technical solution, the hollow through-hole structure is used to form a hollow common channel in the product device body or eyeglass shell to adapt to the transmission direction of bone conduction sound waves.
[0024] The present invention provides a finished device comprising a bone conduction vibrator and a finished housing. The bone conduction vibrator is installed inside the finished housing, and a second through hole is provided on the finished housing corresponding to the position of the first through hole. The bone conduction vibrator and the finished housing together form a bone conduction loudspeaker with a through hole structure.
[0025] As a preferred technical solution, the finished housing includes an upper outer cover and a lower outer cover, which are assembled together.
[0026] The present invention provides a finished device, including a bone conduction vibrator and a finished housing. The bone conduction vibrator is installed inside the finished housing, and a second through hole is provided on the finished housing corresponding to the position of the first through hole.
[0027] As a preferred technical solution, the finished housing includes an upper outer cover and a lower outer cover, which are assembled together.
[0028] The beneficial effects of this utility model are as follows: The bone conduction oscillator structure with through holes provided by this utility model forms a hollow conduction channel that runs through the entire speaker structure by setting mutually aligned through holes in the bracket shell, spring, U-iron, magnet, magnetic conductive sheet, face cover and PCB board. This effectively improves the heat dissipation efficiency of the magnet and coil during operation, enhances the continuous working ability and power handling range of the oscillator, and solves the problem of performance degradation caused by heat accumulation in traditional structures due to enclosed structures.
[0029] Meanwhile, the hollow structure design can be directly adapted to finished headphone or eyeglass shells with through holes, allowing for installation and use without additional vibration isolation structures, simplifying the overall structure and improving vibration transmission efficiency. In addition, the vibrating component of the oscillator completes large-amplitude vibration inside the bracket shell, avoiding the problem of reserving vibration space separately for springs or magnets in traditional solutions, thus improving the overall assembly compactness and structural stability. This utility model has a simple structure, clear modules, and is easy to automate, reducing assembly processes and manufacturing costs, and has good process adaptability and market application prospects. Attached Figure Description
[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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.
[0031] Figure 1 This is a schematic diagram of the structure of the oscillator of this utility model;
[0032] Figure 2 This is an explosion diagram of the oscillator of this utility model;
[0033] Figure 3 This is a schematic diagram of the overall structure of the product of this utility model;
[0034] Figure 4 This is a schematic diagram of the external structure of the complete product of this utility model;
[0035] Figure 5This is a partial schematic diagram of another installation method for the oscillator of this utility model;
[0036] Explanation of reference numerals in the attached figures:
[0037] 2. Bracket housing; 5. Spring; 3. U-shaped iron; 4. Magnet; 7. Magnetic conductive sheet; 8. Coil; 1. PCB board; 6. Cover. Detailed Implementation
[0038] All features disclosed in this specification, or steps in all methods or processes disclosed herein, may be combined in any way, except for mutually exclusive features and / or steps.
[0039] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.
[0040] like Figures 1-4 As shown, the present invention provides a bone conduction oscillator with through holes and related equipment, which has the advantages of compact structure, high conduction efficiency, excellent heat dissipation performance and strong adaptability. The structure and installation method are described in detail below with reference to the embodiments.
[0041] In this embodiment, the bone conduction vibrator is mainly composed of a support shell 2, a spring 5, a U-shaped iron 3, a magnet 4, a magnetic conductive sheet 7, a coil 8, a PCB board 1, and a cover 6.
[0042] The bracket housing 2 adopts an integral injection molding structure or a machined structure, and is provided with a first through hole through its axis. This first through hole serves as a hollow conductive channel for the internal components of the entire bone conduction oscillator, which not only plays a role in heat dissipation, but also provides a structural basis for subsequent adaptation with the product equipment body.
[0043] The bracket housing 2 can be cylindrical, elliptical, or racetrack-shaped, and can be flexibly designed according to the size requirements of the end product to ensure seamless integration with the housings of wearable devices such as headphones and glasses.
[0044] A spring sheet 5 is installed inside the bracket housing 2. The spring sheet 5 is made of a metal material with good elasticity and fatigue strength, such as phosphor bronze or spring steel. It is positioned to fit the inner wall of the bracket housing 2 and is installed with a predetermined preload to give it good vibration response characteristics.
[0045] U-shaped iron 3 is installed below the spring piece 5 and is fixed by laser welding, snap-fitting, or adhesive application. Together with magnet 4, it forms a magnetic circuit system used to receive electromagnetic signals and generate magnetic force changes, thereby driving the vibration of the entire structure. Magnet 4 is located below U-shaped iron 3 and is made of rare-earth neodymium iron boron material to provide sufficient magnetic flux. Its magnetic poles are oriented opposite to coil 8 to form a closed magnetic circuit.
[0046] Regarding the arrangement of the coil 8, the coil 8 is usually wound around the outside of the magnet 4, or installed on the limiting structure between the magnet 4 and the bracket housing 2. It is made of enameled copper wire and electrically connected to the PCB board 1 by welding or elastic contact.
[0047] The magnetic conductive sheet 7 is placed below or adjacent to the magnet 4 to improve the integrity and efficiency of the magnetic circuit, reduce magnetic leakage, and further enhance the magnetoelectric conversion efficiency.
[0048] The PCB board 1 is installed at one end of the bracket housing 2 and is fixed by adhesive, slot or screw. At the same time, the PCB board 1 is used to connect to an external drive signal source, such as the headphone main control board or Bluetooth module. It forms a closed circuit with the coil 8 and realizes signal control.
[0049] The PCB board 1 body also has a first through hole to ensure that it is connected to the above structure, which is conducive to improving the efficiency of hot air convection and mechanical coupling.
[0050] The cover 6 is fitted onto the other end of the bracket housing 2, and is in contact with the top of the spring piece 5 or indirectly connected through the limiting post. The cover 6 is also provided with a through hole structure. The cover 6 is fixed to the bracket housing 2 by adhesive, snap, hot pressing or ultrasonic welding to form a stable package. At the same time, it serves as a conduction surface for vibration output during overall vibration, and fits against the finished housing to realize the transmission of bone conduction sound waves.
[0051] When the oscillator is energized, the coil 8 is driven by the current to generate a change in the magnetic field, which in turn drives the U-iron 3 and the magnet 4 to produce axial or radial composite vibrations. This vibration acts on the spring 5 and is transmitted to the product device body through the bracket housing 2 and the face cover 6. When the wearer brings the product device body close to the temporal bone, cheekbone, or teeth area, the sound can be transmitted to the auditory nerve through the bones, achieving auditory perception without penetrating the ear canal.
[0052] To achieve the functional integration of the aforementioned oscillator, the product device is designed to include the bone conduction oscillator. In this embodiment, the main body of the product device consists of an upper outer cover 100 and a lower outer cover 200, which are assembled and connected by means of adhesive, screws, clips, or ultrasonic welding to form a closed shell structure.
[0053] The bone conduction vibrator 300 is installed in a designated cavity within the main body of the product device, and the cavity is positioned corresponding to the contact area of the user's face.
[0054] To improve bone conduction efficiency, a second through hole 400 is provided on the main body of the product device at the position corresponding to the first through hole of the bone conduction oscillator, to ensure that the overall structure has air conduction characteristics in the vibration transmission path, reduce damping and enhance energy conduction.
[0055] The entire structure has excellent heat dissipation performance. When the vibration component generates heat, it can quickly release the heat through air exchange between the first and second through holes. At the same time, the hollow conductive design also helps to reduce the overall weight and improve wearing comfort.
[0056] In this embodiment, the bone conduction vibrator has circular, racetrack-shaped, or elliptical through holes. The finished device can be a headphone or glasses, etc. The housing of the sound conduction part of the finished device has circular, racetrack-shaped, or elliptical through holes.
[0057] like Figure 5 As shown, when the entire bone conduction transducer 300 is installed inside the finished product housing 500, a positioning protrusion 600 can be provided inside the finished product housing 500. The positioning protrusion 600 is used to position and insert into the first through hole of the bone conduction transducer to complete the center positioning.
[0058] This utility model discloses a finished device, comprising a bone conduction vibrator and a finished housing. The bone conduction vibrator is installed inside the finished housing. A second through hole is provided on the finished housing corresponding to the position of the first through hole. The bone conduction vibrator and the finished housing together form a bone conduction speaker with a through hole structure. The finished housing includes an upper outer cover and a lower outer cover, which are assembled together.
[0059] The above implementation not only optimizes the electroacoustic conversion efficiency of the bone conduction oscillator, but also makes its structure easier to assemble and mass-produce, making it suitable for integrated applications in a variety of smart wearable devices.
[0060] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.
Claims
1. A bone conduction oscillator with a through-hole structure, characterized in that, include: The bracket housing (2) is a hollow structure with a first through hole, which is used to accommodate internal components and serve as a vibration transmission path; A spring clip (5) is installed inside the bracket housing (2); U-shaped iron (3) is placed below the spring piece (5) and magnetically cooperates with the magnet (4) to form a magnetic circuit system; Magnet (4) is located below the U-iron (3); A magnetic conductive sheet (7) is disposed between the magnet (4) and the coil (8) or at an adjacent position to enhance the magnetic circuit efficiency; A coil (8) is wound around the periphery of the magnet (4) or disposed between the magnet (4) and the bracket housing (2) for receiving electroacoustic signals; A PCB board (1) is installed at one end of the bracket housing (2) and electrically connected to the coil (8) for inputting external drive signals; The cover (6) is fitted onto the other end of the bracket housing (2) and is in contact with or indirectly connected to the spring piece (5). The cover (6) also has a through hole structure. Among them, the bracket shell (2), spring (5), U iron (3), magnet (4), magnetic conductive sheet (7), face cover (6) and PCB board (1) are all provided with the first through hole aligned with each other. The first through hole runs through the entire bone conduction vibrator speaker structure to form a hollow conductive channel, which is used to improve heat dissipation performance and adapt to various finished equipment.
2. The bone conduction oscillator with a through-hole structure according to claim 1, characterized in that: The support shell (2) is cylindrical, elliptical or racetrack shaped.
3. The bone conduction oscillator with a through-hole structure according to claim 1, characterized in that: The coil (8) is arranged opposite to the magnet (4). When the coil (8) is energized, it drives the U-iron (3) and the magnet (4) to generate axial or radial vibration as a whole through magneto-electric induction.
4. The bone conduction oscillator with a through-hole structure according to claim 1, characterized in that: The spring piece (5) is positioned above the U-iron (3) and vibrates synchronously with the U-iron (3) and the magnet (4) during vibration, forming a composite vibration structure.
5. The bone conduction oscillator with a through-hole structure according to claim 1, characterized in that: The cover (6) is snapped or heat-pressed to the bracket housing (2) to form a sealed structure.
6. The bone conduction oscillator with a through-hole structure according to claim 1, characterized in that: The PCB board (1) is electrically connected to the coil (8) terminals via elastic contacts or soldering.
7. The bone conduction oscillator with a through-hole structure according to claim 1, characterized in that: The hollow conductive channel is used to form a hollow common channel in the product equipment body or eyeglass shell to adapt to the transmission direction of bone conduction sound waves.
8. A finished product equipment, characterized in that, The invention includes a bone conduction vibrator as described in any one of claims 1 to 7 and a finished housing, wherein the bone conduction vibrator is installed inside the finished housing, and a second through hole is provided on the finished housing at the position corresponding to the first through hole, and the bone conduction vibrator and the finished housing constitute a bone conduction loudspeaker with a through hole structure.
9. The finished equipment according to claim 8, characterized in that: The finished housing includes an upper outer cover and a lower outer cover, which are assembled together.