An irregularly shaped coaxial bone conduction and air conduction integrated speech electronics component

Abstract

This utility model relates to the field of acoustic device technology and discloses an irregularly shaped coaxial bone conduction and air conduction integrated sound-producing electronic component. It includes an upper housing and a lower housing fixedly connected to the bottom of the upper housing. The upper housing houses a bone conduction sound-producing component and an air conduction sound-producing component. A cover plate is provided on the upper surface of the upper housing, and a multi-magnet component is disposed on the upper surface of the cover plate. The multi-magnet component, the bone conduction sound-producing component, and the air conduction sound-producing component are all fixedly integrated using a composite ultrasonic welding and laser welding process. This irregularly shaped coaxial bone conduction and air conduction integrated sound-producing electronic component, through the use of a composite fixing process of ultrasonic welding and laser welding, first pre-fixes a large area of ​​the outer layer of the housing using ultrasonic welding, and then uses laser welding to strengthen the connection strength of the sealing area and the core sound-producing component, improving the connection stability of the core component, reducing sound malfunctions caused by component loosening, and extending the service life of the component.

Description

Technical Field

[0001] This utility model belongs to the field of acoustic device technology, specifically, it relates to an irregularly shaped coaxial bone conduction and air conduction integrated sound-producing electronic component. Background Technology

[0002] In the field of acoustic devices, bone conduction and air conduction sound components are often used separately in different acoustic terminal products. Some integrated products are also mostly separate layouts, and the magnetic fields of their driving sources cannot be coaxially matched. Currently, single sound components have obvious limitations in terms of application scenarios. Although bone conduction components can ensure voice transmission in noisy environments, their sound quality is not full enough, while air conduction components have clear sound quality but are easily affected by external noise. On the other hand, separate integrated products are not only bulky, but also suffer from asynchronous sound production due to misalignment of the two components' installation positions. This makes it difficult to meet the listening needs of multiple scenarios and fails to satisfy users' demands for multifunctional, miniaturized, and highly adaptable acoustic devices. Summary of the Invention

[0003] The purpose of this invention is to provide an irregularly shaped coaxial bone conduction and air conduction integrated speech electronic component to solve the problems mentioned in the background art.

[0004] An irregularly shaped coaxial bone conduction and air conduction integrated sound electronic component includes an upper housing and a lower housing fixedly connected to the bottom of the upper housing. The upper housing is provided with a bone conduction sound component and an air conduction sound component. The upper surface of the upper housing is provided with a cover plate, and the upper surface of the cover plate is provided with a multi-magnet component. The lower housing has a base attached to its inner wall, and a power source is fixedly connected to the bottom of the inner wall of the lower housing. The power source is electrically connected to the bone conduction sound component and the air conduction sound component, respectively. The lower housing has an acoustic opening on its side. The multi-magnet assembly, bone conduction sound-emitting assembly, and air conduction sound-emitting assembly are all fixed and integrated using a composite process of ultrasonic welding and laser welding. Ultrasonic welding is used for large-area pre-fixation of the outer structure of the upper and lower shells, while laser welding is used for local reinforcement and fixation of the sealing areas of the upper and lower shells, as well as the multi-magnet assembly, bone conduction sound-emitting assembly, and air conduction sound-emitting assembly.

[0005] In a preferred embodiment of the present invention, the bone conduction sound component includes a bone conduction drive coil and a bone conduction vibrating element. The bone conduction drive coil is disposed outside the bone conduction vibrating element and corresponds to the multi-magnet component.

[0006] In a preferred embodiment of the present invention, the air-conducting sound-producing component includes an air-conducting drive coil and an air-conducting diaphragm. The air-conducting drive coil is disposed outside the air-conducting diaphragm, and the air-conducting drive coil is adapted to the magnetic field region of the multi-magnet component.

[0007] In a preferred embodiment of this utility model, the multi-magnet assembly adopts an array-type arrangement structure, and the magnetic field coverage of the multi-magnet assembly is adapted to the installation positions of both the bone conduction drive coil and the air conduction drive coil.

[0008] In a preferred embodiment of this utility model, the acoustic opening is an array of through holes, and the axis of the acoustic opening is consistent with the vibration direction of the air-conducting diaphragm.

[0009] In a preferred embodiment of the present invention, the upper surface of the upper housing is provided with a snap-fit ​​interface, which snaps into the cover plate. A connecting cavity is provided between the upper housing and the cover plate, and the multi-magnet assembly is installed inside the connecting cavity.

[0010] In a preferred embodiment of this utility model, the bone conduction vibration element is made of elastic metal material, and a sealing gasket is provided between the cover plate and the upper shell.

[0011] Compared with the prior art, the present invention has the following advantages: 1. This irregularly shaped coaxial bone conduction and air conduction integrated sound electronic component integrates bone conduction and air conduction sound components in the same housing through a coaxial integrated structure. It achieves coaxial adaptation of the magnetic fields of the two component drive sources through an array of multi-magnet components. It retains the clear sound quality of air conduction in quiet environments and has the stable voice transmission capability of bone conduction in noisy environments. It can meet the listening needs of different scenarios through mode switching. At the same time, the integrated structural design significantly reduces the overall size of the component, which can be more easily integrated into various small acoustic terminals, improving the space utilization and multi-functional adaptability of terminal products.

[0012] 2. This irregularly shaped coaxial bone conduction and air conduction integrated sound electronic component employs a composite fixing process of ultrasonic welding and laser welding. First, ultrasonic welding is used to pre-fix a large area of ​​the outer shell, and then laser welding is used to strengthen the connection strength of the sealing area and the core sound component. This not only ensures the overall structure's airtightness and prevents internal components from being corroded by external moisture and dust, but also improves the connection stability of the core component, reduces sound malfunctions caused by component loosening, extends the component's service life, simplifies the assembly process, and improves overall production efficiency and product yield.

[0013] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0014] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the upper shell of this utility model; Figure 3 This is a schematic diagram of the air conduction component structure of this utility model; Figure 4 This is a schematic diagram of the internal structure of the lower shell of this utility model; Figure 5 This is a schematic diagram of the power supply structure of this utility model.

[0015] In the diagram: 1. Upper housing; 2. Lower housing; 3. Acoustic opening; 4. Cover plate; 5. Multi-magnet assembly; 6. Bone conduction drive coil; 7. Bone conduction vibrator; 8. Air conduction drive coil; 9. Air conduction diaphragm; 10. Base; 11. Power supply. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0017] like Figures 1 to 5 As shown, an irregularly shaped coaxial bone conduction and air conduction integrated sound electronic component includes an upper housing 1 and a lower housing 2 fixedly connected to the bottom of the upper housing 1. The upper housing 1 is provided with a bone conduction sound component and an air conduction sound component. The upper surface of the upper housing 1 is provided with a cover plate 4, and the upper surface of the cover plate 4 is provided with a multi-magnet component 5. The inner wall of the lower housing 2 is fitted with a base 10, and the bottom of the inner wall of the lower housing 2 is fixedly connected with a power supply 11. The power supply 11 is electrically connected to the bone conduction sound component and the air conduction sound component respectively. An acoustic opening 3 is provided on the side of the lower housing 2. The multi-magnet assembly 5, the bone conduction sound assembly, and the air conduction sound assembly are all fixed and integrated using a composite process of ultrasonic welding and laser welding. Ultrasonic welding is used for large-area pre-fixation of the outer structure of the upper shell 1 and the lower shell 2, while laser welding is used for local reinforcement and fixation of the sealing areas of the upper shell 1 and the lower shell 2, as well as the multi-magnet assembly 5, the bone conduction sound assembly, and the air conduction sound assembly.

[0018] The bone conduction sound component includes a bone conduction drive coil 6 and a bone conduction vibrator 7. The bone conduction drive coil 6 is disposed outside the bone conduction vibrator 7 and corresponds to the multi-magnet component 5.

[0019] The air conduction sound-producing component includes an air conduction drive coil 8 and an air conduction diaphragm 9. The air conduction drive coil 8 is disposed outside the air conduction diaphragm 9, and the air conduction drive coil 8 is adapted to the magnetic field region of the multi-magnet component 5.

[0020] The multi-magnet assembly 5 adopts an array-style arrangement structure, and the magnetic field coverage of the multi-magnet assembly 5 is adapted to the installation positions of both the bone conduction drive coil 6 and the air conduction drive coil 8.

[0021] The acoustic opening 3 is an array of through holes, and the axis of the acoustic opening 3 is consistent with the vibration direction of the air-conducting diaphragm 9.

[0022] The upper surface of the upper housing 1 has a card interface, which is engaged with the cover plate 4. A connecting cavity is provided between the upper housing 1 and the cover plate 4, and the multi-magnet assembly 5 is installed inside the connecting cavity.

[0023] The bone conduction vibration element 7 is made of elastic metal material, and a sealing gasket is provided between the cover plate 4 and the upper housing 1.

[0024] Component assembly: First, the upper housing 1 and the lower housing 2 are pre-processed. A sealing gasket is installed at the interface on the upper surface of the upper housing 1. Then, the cover plate 4 is snapped into the interface to form a connecting cavity between the upper housing 1 and the cover plate 4. Then, the array-arranged multi-magnet assembly 5 is precisely installed inside the connecting cavity to ensure that its magnetic field range can simultaneously cover the installation areas of the bone conduction drive coil 6 and the air conduction drive coil 8 to be installed later.

[0025] The base 10 is snapped onto the inner wall of the lower housing 2, and the power supply 11 is fixed to the bottom of the inner wall of the lower housing 2, thus completing the assembly of the basic components on the side of the lower housing.

[0026] Inside the upper housing 1, the bone conduction vibrator 7 made of elastic metal is first fixed in place, and then the bone conduction drive coil 6 is fitted onto the outside of the bone conduction vibrator 7 to ensure that the position of the bone conduction drive coil 6 and the multi-magnet assembly 5 are precisely aligned. After that, the air conduction diaphragm 9 is installed in the designated area, and the air conduction drive coil 8 is fitted onto the outside of the air conduction diaphragm 9 to ensure that it is compatible with the magnetic field area of ​​the multi-magnet assembly 5.

[0027] The upper shell 1 and lower shell 2, with their internal components assembled, are connected. First, ultrasonic welding is used to pre-fix the outer structure of both shells over a large area to achieve preliminary structural forming and connection. Then, laser welding is used to locally reinforce and fix the key connection parts of the sealing areas of the upper and lower shells, the multi-magnet component 5, the bone conduction sound component, and the air conduction sound component, ensuring the overall structure's airtightness and the robustness of the component connections.

[0028] Finally, it was confirmed that the axis of the arrayed acoustic openings 3 on the side of the housing 2 was consistent with the vibration direction of the air-conducting diaphragm 9, thus completing the assembly of the entire electronic component.

[0029] This component can be directly integrated into acoustic terminal products such as smart headphones and portable voice devices. The power supply 11 can be connected to the power supply system of the terminal device or powered independently. It can switch between bone conduction and air conduction sound modes or work together through the control module of the terminal device, adapting to various scenarios such as daily calls, listening to music during exercise, and voice interaction in noisy environments.

[0030] Working principle: When power supply 11 supplies power to the bone conduction sound component, the bone conduction drive coil 6 generates an alternating magnetic field. This magnetic field interacts with the fixed magnetic field formed by the multi-magnet component 5, generating a periodic electromagnetic driving force. This driving force is transmitted to the bone conduction vibrator 7, causing it to vibrate mechanically at the same frequency. The vibration, through contact with human bones (such as the skull), directly transmits the sound wave signal to the auditory nerve, thereby realizing bone conduction sound generation.

[0031] After power supply 11 supplies power to the air conduction sound component, the air conduction drive coil 8 is energized in the magnetic field of the multi-magnet component 5. Under the influence of electromagnetic induction, it generates a reciprocating driving force, which drives the air conduction diaphragm 9 to vibrate at high frequency. The vibration of the diaphragm pushes the surrounding air to form sound waves with alternating compression and sparse areas. The sound waves radiate outward through the acoustic opening 3 on the side of the lower housing 2 and are transmitted through the air to the eardrum, thus realizing air conduction sound generation.

[0032] The multi-magnet assembly 5 is arranged in an array, and its magnetic field coverage is compatible with both the bone conduction drive coil 6 and the air conduction drive coil 8, ensuring that the driving sources of the two sound components are in a coaxial or near-coaxial magnetic field environment. In actual operation, the power supply timing and power of the two drive coils can be adjusted through the control module to achieve synchronous or independent operation of bone conduction and air conduction sound, ensuring clear air conduction sound quality in quiet environments while also meeting the requirements for stable voice transmission of bone conduction in noisy environments.

Claims

1. An irregularly shaped coaxial bone conduction and air conduction integrated vocal electronic component, comprising an upper housing (1) and a lower housing (2) fixedly connected to the bottom of the upper housing (1), characterized in that: The upper housing (1) is provided with a bone conduction sound component and an air conduction sound component inside. The upper surface of the upper housing (1) is provided with a cover plate (4), and the upper surface of the cover plate (4) is provided with a multi-magnet component (5). The lower housing (2) has a base (10) attached to its inner wall. A power supply (11) is fixedly connected to the bottom of the inner wall of the lower housing (2). The power supply (11) is electrically connected to the bone conduction sound component and the air conduction sound component respectively. An acoustic opening (3) is provided on the side of the lower housing (2). The multi-magnet assembly (5), bone conduction sound component and air conduction sound component are all fixed and integrated by a composite process of ultrasonic welding and laser welding. Ultrasonic welding is used for large-area pre-fixation of the outer structure of the upper shell (1) and lower shell (2), and laser welding is used for local reinforcement and fixation of the sealing area of ​​the upper shell (1) and lower shell (2) and the multi-magnet assembly (5), bone conduction sound component and air conduction sound component.

2. The irregularly shaped coaxial bone conduction and air conduction integrated vocal electronic component according to claim 1, characterized in that: The bone conduction sound component includes a bone conduction drive coil (6) and a bone conduction vibrator (7). The bone conduction drive coil (6) is disposed outside the bone conduction vibrator (7) and corresponds to the multi-magnet component (5).

3. The irregularly shaped coaxial bone conduction and air conduction integrated vocal electronic component according to claim 1, characterized in that: The air conduction sound component includes an air conduction drive coil (8) and an air conduction diaphragm (9). The air conduction drive coil (8) is disposed outside the air conduction diaphragm (9), and the air conduction drive coil (8) is adapted to the magnetic field region of the multi-magnet component (5).

4. The irregularly shaped coaxial bone conduction and air conduction integrated vocal electronic component according to claim 1, characterized in that: The multi-magnet assembly (5) adopts an array-type arrangement structure, and the magnetic field coverage of the multi-magnet assembly (5) is adapted to the installation positions of both the bone conduction drive coil (6) and the air conduction drive coil (8).

5. The irregularly shaped coaxial bone conduction and air conduction integrated vocal electronic component according to claim 1, characterized in that: The acoustic opening (3) is an array-type through-hole structure, and the axis of the acoustic opening (3) is consistent with the vibration direction of the air-conducting diaphragm (9).

6. The irregularly shaped coaxial bone conduction and air conduction integrated vocal electronic component according to claim 1, characterized in that: The upper surface of the upper housing (1) is provided with a card interface, and the card interface is engaged with the cover plate (4). A connecting cavity is provided between the upper housing (1) and the cover plate (4), and the multi-magnet assembly (5) is installed inside the connecting cavity.

7. The irregularly shaped coaxial bone conduction and air conduction integrated vocal electronic component according to claim 2, characterized in that: The bone conduction vibration element (7) is made of elastic metal material, and a sealing gasket is provided between the cover plate (4) and the upper shell (1).

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