Active and passive combined type high-frequency reinforced bone conduction vibrator

Abstract

The utility model discloses an active and passive combined type high-frequency enhanced bone conduction vibrator, which comprises an upper shell, a middle shell, a bottom shell, a voice coil, a washer sheet, a first magnet, a magnetic circuit U cup, a main elastic sheet, a balancing weight, a passive elastic sheet and a passive magnet, a first magnet is sleeved in the voice coil, a magnetic circuit U cup is arranged at the top end of the first magnet, the magnetic circuit U cup is sleeved on the voice coil, a main elastic sheet is sleeved on the outer wall of the magnetic circuit U cup, a balancing weight is arranged on the main elastic sheet, and the balancing weight is sleeved on the magnetic circuit U cup; according to the utility model, the active-passive double-vibration system effectively solves the problem that the vibration system can only output audio signals at middle and low frequency bands due to large mass, the active vibration system outputs vibration signals at middle and low frequencies, and the passive system mainly outputs vibration signals at high frequency, so that the vibration signals at low, middle and high frequencies are generated, and the vibration effect is improved. The output of a full-band bone conduction audio signal is realized, and the overall tone quality effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of bone conduction oscillator technology, and in particular to a composite active-passive high-frequency enhanced bone conduction oscillator. Background Technology

[0002] Bone conduction transducers are a special type of audio device component. Their core function is to convert sound signals into vibration signals using the principle of bone conduction, which are then transmitted through the skull to the inner ear, enabling sound perception. Due to their unique working principle and advantages, bone conduction transducers are widely used in various fields. For people with hearing loss or other ear problems, bone conduction transducers can provide a more effective audio experience. They bypass the potentially damaged outer and middle ear, directly stimulating the auditory cells in the inner ear, allowing users to hear sounds more clearly. During outdoor activities and sports, bone conduction transducers allow users to receive phone calls, listen to music, or receive navigation instructions while keeping their ears free. This improves user safety and convenience during activities.

[0003] Currently, existing bone conduction transducer systems use a single spring structure to control the vibrating block. The vibration transmission path needs to be transmitted through the spring to the middle shell, and then to the upper shell. The upper shell part is bonded to the vibration plane of the bone conduction headphones to produce the effect. When the vibration frequency is relatively high, the vibration amplitude of the audio signal is very small. Due to the relatively large weight of the vibrating block system and its lack of sensitivity, it is not possible to effectively convert the high-frequency signal of the audio signal from an electrical signal into the actual vibration signal of the transducer. As a result, the frequency range generated by the bone conduction transducer is relatively narrow, with a lot of high-frequency loss, which cannot meet the standards required for high-quality sound such as Hi-RES. Utility Model Content

[0004] The purpose of this invention is to provide a composite active-passive high-frequency enhanced bone conduction oscillator to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a composite active-passive high-frequency enhanced bone conduction oscillator, comprising:

[0006] Voice coil, first magnet, magnetic circuit U-cup, main spring, counterweight, passive spring and passive magnet;

[0007] A first magnet is fitted inside the voice coil, and a magnetic circuit U-cup is provided at the top of the first magnet, and the magnetic circuit U-cup is fitted onto the voice coil;

[0008] A main spring is fitted onto the outer wall of the magnetic circuit U-cup, and a counterweight is provided on the main spring, which is fitted onto the magnetic circuit U-cup.

[0009] The passive spring is fixedly connected to the upper part of the inner shell, and a passive magnet is fixedly connected to the passive spring.

[0010] As a further technical solution, a bottom housing is fixedly connected to the lower surface of the voice coil, and a middle housing is fixedly connected to the upper surface of the bottom housing.

[0011] The inner and outer shells contain a washer plate, a first magnet, and a magnetic circuit U-cup.

[0012] The main spring is fixedly connected to the inner wall of the middle shell.

[0013] As a further technical solution, a passive spring is sleeved on the upper part of the middle shell, and an upper shell is provided on the passive spring, and the upper shell is fixedly connected to the middle shell.

[0014] As a further technical solution, a washer plate is provided on the lower surface of the first magnet, and the washer plate is located inside the voice coil.

[0015] As a further technical solution, the upper shell is used to fit the vibration surface of the bone conduction headphones and transmits vibration signals to the user's bones through the middle shell.

[0016] As a further technical solution, the main spring and the counterweight constitute an active vibration system for outputting low- and medium-frequency vibration signals.

[0017] The passive spring and the passive magnet constitute a passive vibration system, which is used to output high-frequency vibration signals.

[0018] As a further technical solution, the washer, the first magnet, and the magnetic circuit U-cup together constitute a magnetic circuit system, which is used to generate driving force by interacting with the current of the voice coil.

[0019] As a further technical solution, the resonant frequency of the passive vibration system is higher than that of the active vibration system, so as to respond to high-frequency signals and convert them into high-frequency vibration output.

[0020] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: This utility model effectively solves the problem that vibration systems can only output low-to-mid frequency audio signals due to their large mass by using an active-passive dual vibration system. The active vibration system outputs low-to-mid frequency vibration signals, while the passive system mainly outputs high-frequency vibration signals, thereby generating low, mid, and high frequency vibration signals, realizing the output of full-band bone conduction audio signals, and improving the overall sound quality. Attached Figure Description

[0021] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0023] Figure 2 This is the impedance curve of the oscillator of this utility model.

[0024] In the diagram: 1. Upper shell; 2. Middle shell; 3. Bottom shell; 4. Voice coil; 5. Washer; 6. First magnet; 7. Magnetic circuit U-cup; 8. Main spring; 9. Counterweight; 10. Passive spring; 11. Passive magnet. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] Please see the appendix Figure 1 -Appendix Figure 2 This utility model provides an embodiment of a composite active-passive high-frequency enhanced bone conduction oscillator, comprising a voice coil 4, a first magnet 6 sleeved inside the voice coil 4, a magnetic circuit U-cup 7 disposed at the top of the first magnet 6 and sleeved on the voice coil 4, a main spring plate 8 sleeved on the outer wall of the magnetic circuit U-cup 7, a counterweight 9 disposed on the main spring plate 8 and sleeved on the magnetic circuit U-cup 7; a bottom shell 3 is fixedly connected to the lower surface of the voice coil 4, a middle shell 2 is fixedly connected to the upper surface of the bottom shell 3, and a washer plate 5, the first magnet 6 and the magnetic circuit U-cup 7 are all disposed inside the middle shell 2, the main spring plate 8 is fixedly connected to the inner wall of the middle shell 2, the bottom shell 3 together with other shell components constitutes the overall structure of the oscillator, protecting the internal vibration system and magnetic circuit system, the middle shell 2 plays the role of supporting and transmitting vibration, it connects the upper shell 1 and the bottom shell 3, and is also one of the channels for the vibration signal to be transmitted from the low-frequency vibration system to the upper shell 1.

[0027] The magnetic circuit U-cup 7, together with the washer 5 and the first magnet 6, generates a magnetic field. This magnetic field interacts with the current in the voice coil 4 to generate a driving force, causing the vibrator to vibrate. A passive spring 10 is fitted onto the upper part of the middle shell 2. An upper shell 1 is mounted on the passive spring 10 and is fixedly connected to the middle shell 2. The passive spring 10 is used to connect to the passive magnet 11 and vibrates under the action of a high-frequency signal. Since the passive spring 10 has a very small mass, it can very sensitively convert high-frequency signals into high-frequency vibration signals. The upper shell 1 is used to directly adhere to the vibration surface of the bone conduction headphones. The vibration generated by the audio signal is transmitted to the upper shell 1 through the vibrator system, and then to the user's bones to achieve bone conduction hearing.

[0028] A washer plate 5 is provided on the lower surface of the first magnet 6, and the washer plate 5 is disposed inside the voice coil 4. The washer plate 5, together with the first magnet 6 and the magnetic circuit cup 7, forms a complete magnetic circuit, which helps guide the magnetic field, enhances the interaction between the voice coil 4 and the magnetic circuit, and improves the vibration efficiency. A passive magnet 11 is fixedly connected to the passive spring 10. The passive magnet 11 works with the passive spring 10 to sense high-frequency vibration signals and generate magnetic field induction. The high-frequency vibration signal generated by this magnetic field induction is transmitted to the oscillator structure through the passive spring 10, thereby realizing the output of high-frequency signals.

[0029] Working Principle: This utility model consists of four main parts: a voice coil 4, a washer 5, a first magnet 6, and a magnetic circuit U-cup 7 forming the magnetic circuit system of the vibrator; a counterweight 9 and a main spring 8 forming the active vibration system; a passive spring 10 and a passive magnet 11 forming the passive vibration system; and an upper shell 1, a middle shell 2, and a bottom shell 3. Its working principle is as follows: When an audio signal passes through the voice coil 4, a current is generated, which induces a magnetic field with the magnetic circuit formed by the washer 5, the first magnet 6, and the magnetic circuit U-cup 7, causing the main spring 8, the counterweight, and the center of gravity balance block 9 to vibrate together. When a low-to-mid frequency signal enters, its vibration signal is mainly transmitted by the main spring 8 to the middle shell 2 and the upper shell 1 (the upper shell 1 is the vibration surface that fits the bone conduction headphone), and the passive vibration system composed of the passive spring 10 and the passive magnet 11.

[0030] Because the vibrating mass is very light, the system resonant frequency Fo will be relatively high, and the passive vibration system will not work. When a high-frequency signal enters, the passive vibration system composed of the passive spring 10 and the passive magnet 11 will generate a magnetic field induction to produce a high-frequency vibration signal when the passive magnet 11 senses the high-frequency vibration of the magnetic circuit composed of the washer 5, the first magnet 6, and the magnetic circuit U cup 7. Because its system mass is very small, it can easily convert the high-frequency audio signal into a high-frequency vibration signal of bone conduction. In this way, the active and passive system oscillator will be composed of two vibration sources.

[0031] The voice coil 4, washer 5, first magnet 6, and magnetic circuit U-cup 7 form the magnetic circuit system of the oscillator. The counterweight 9 and main spring 8 constitute the active vibration system, which mainly outputs low-to-mid frequency vibration signals. The washer 5, first magnet 6, and magnetic circuit U-cup 7 constitute the passive system, which mainly outputs high-frequency vibration signals. This generates low, mid, and high-frequency vibration signals, realizes the output of full-band bone conduction audio signals, and improves the overall sound quality.

[0032] 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 a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An active-passive composite high-frequency enhanced bone conduction vibrator, characterized in that, include: Voice coil (4), first magnet (6), magnetic circuit U cup (7), main spring (8), counterweight (9), passive spring (10) and passive magnet (11). The voice coil (4) is fitted with a first magnet (6), and a magnetic circuit U cup (7) is provided at the top of the first magnet (6), and the magnetic circuit U cup (7) is fitted on the voice coil (4); A main spring plate (8) is sleeved on the outer wall of the magnetic circuit U cup (7), and a counterweight (9) is provided on the main spring plate (8), and the counterweight (9) is sleeved on the magnetic circuit U cup (7); The passive spring (10) is fixedly connected to the upper part of the inner shell (2), and a passive magnet (11) is fixedly connected to the passive spring (10).

2. The active-passive composite high-frequency enhanced bone conduction oscillator according to claim 1, characterized in that: The lower surface of the voice coil (4) is fixedly connected to the bottom shell (3), and the upper surface of the bottom shell (3) is fixedly connected to the middle shell (2). The inner shell (2) is provided with a washer plate (5), a first magnet (6) and a magnetic circuit U cup (7). The main spring piece (8) is fixedly connected to the inner wall of the middle outer shell (2).

3. The active-passive composite high-frequency enhanced bone conduction oscillator according to claim 2, characterized in that: A passive spring (10) is sleeved on the upper part of the middle outer shell (2), and an upper outer shell (1) is provided on the passive spring (10), and the upper outer shell (1) is fixedly connected to the middle outer shell (2).

4. The active-passive composite high-frequency enhanced bone conduction oscillator according to claim 1, characterized in that: The lower surface of the first magnet (6) is provided with a washer plate (5), and the washer plate (5) is located inside the voice coil (4).

5. The active-passive composite high-frequency enhanced bone conduction oscillator according to claim 3, characterized in that: The upper shell (1) is used to fit the vibration surface of the bone conduction headphones and transmit vibration signals to the user's bones through the middle shell (2).

6. The active-passive composite high-frequency enhanced bone conduction oscillator according to claim 1, characterized in that: The main spring sheet (8) and the counterweight (9) constitute an active vibration system for outputting low- and medium-frequency vibration signals; The passive spring (10) and the passive magnet (11) constitute a passive vibration system for outputting high-frequency vibration signals.

7. The active-passive composite high-frequency enhanced bone conduction oscillator according to claim 2, characterized in that: The washer plate (5), the first magnet (6) and the magnetic circuit U cup (7) together constitute a magnetic circuit system, which is used to generate driving force by interacting with the current of the voice coil (4).

8. The active-passive composite high-frequency enhanced bone conduction oscillator according to claim 6, characterized in that: The resonant frequency of the passive vibration system is higher than that of the active vibration system, so as to respond to high-frequency signals and convert them into high-frequency vibration output.

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