Vibration bone conduction loudspeaker

Abstract

The utility model relates to the technical field of vibration bone conduction horns, and discloses a vibrator and a horn (bone conduction horn), which comprise a voice coil mounting mechanism and a weighting mechanism positioned in the voice coil mounting mechanism, and two elastic sheets are arranged in central symmetry in the horizontal direction; the weighting mechanism comprises a fixing frame which is located in the support and penetrates through the support, weighting rings are installed at the top and the bottom of the fixing frame, a plurality of magnets which are arranged side by side are installed in the fixing frame, and one end of the elastic piece is installed on the fixing frame. The support comprises a first support, a second support and a third support, wherein the second support and the third support are located on the two sides of the first support. The coils comprise a first coil clamped between the first support and the second support and a second coil clamped between the first support and the third support. The vibration mode of the elastic sheet in the vibration bone conduction loudspeaker is a left-right vibration mode, the elastic sheet is not easy to deform, the elastic force is large, the effective amplitude of the elastic sheet is large, the vibration sense diving depth and the resonance frequency (F0) are low, the vibration sound is fine and smooth, the vibration sense is strong, and the power consumption is low.

Description

Technical Field

[0001] This utility model relates to the field of vibrating bone conduction horn technology, specifically a vibrating bone conduction horn. Background Technology

[0002] A bone conduction loudspeaker is a device that produces sound through vibration, typically used to generate low-frequency sounds or as an alarm. The core component of a bone conduction loudspeaker is a diaphragm or vibrating plate, driven by electromagnetic or piezoelectric effects. When current passes through a coil or piezoelectric material, the diaphragm vibrates rapidly, pushing air to generate sound waves. The vibration frequency determines the pitch of the sound, while the amplitude of the vibration affects the loudness.

[0003] A search revealed that patent application CN202023045061.X discloses a vibration bone conduction speaker, comprising a housing, a diaphragm, a magnet, an elastic part, and a coil. The diaphragm is connected to the housing via the elastic part. The magnet and coil are disposed within the housing, with one on the diaphragm and the other on the housing. The magnet and coil are positioned facing each other, and the coil and magnet are on the same axis. The projections of the coil and magnet onto a plane parallel to the axis do not coincide, thus driving the diaphragm to vibrate when the coil is energized. This vibration bone conduction speaker employs innovative technology, with the coil and magnet facing each other and their projections onto a plane parallel to the magnet's axis not coinciding. It also utilizes a novel design that integrates a synthetic metal double-elastic sheet with a support frame, and its application in bone conduction speakers yields good results.

[0004] Traditional bone conduction speakers vibrate up and down, which makes the spring easy to deform, the vertical vibration distance of the spring insufficient, which is restrictive, complex in structure, short in service life and cannot be widely used. The innovative features of the new bone conduction speaker include high vibration frequency, simplified structure and long service life. Therefore, we need to propose a new type of bone conduction speaker. Utility Model Content

[0005] The purpose of this invention is to provide a vibrating bone conduction horn, in which the spring vibrates left and right, the spring is not easily deformed, has high elasticity, large amplitude, deep vibration, low vibration frequency (low resonance frequency F0), simple structure, and long service life, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vibration bone conduction speaker, including a voice coil mounting mechanism and a weighting mechanism located inside the voice coil mounting mechanism. The voice coil mounting mechanism includes multiple supports, two coils mounted on the supports, and two springs. The two springs are arranged centrally symmetrically in the horizontal direction.

[0007] The weighting mechanism includes a fixed frame located inside the support and penetrating the support. Weight rings are installed at the top and bottom of the fixed frame. Multiple magnets arranged side by side are installed inside the fixed frame. One end of the spring is installed on the fixed frame.

[0008] Preferably, the bracket includes a bracket one, a bracket two and a bracket three located on both sides of the bracket one, and the coil includes a coil one snapped between the bracket one and the bracket two, and a coil two snapped between the bracket one and the bracket three.

[0009] Preferably, the spring includes spring one mounted on bracket two and spring two mounted on bracket three.

[0010] Preferably, claws are provided on both sides of bracket one, one side of bracket two, and one side of bracket three. The claw on one side of bracket one engages with the claw on bracket two on the outer wall of coil one, and the claw on the other side of bracket one engages with the claw on bracket three on the outer wall of coil two.

[0011] Preferably, the fixing frame has two centrally symmetrical protrusions on two non-adjacent sides, and the protrusions are respectively provided with grooves and locking blocks.

[0012] Preferably, one end of the first spring and one end of the second spring are provided with a through hole and a notch, the through hole is aligned with the notch, and the locking block is engaged inside the notch.

[0013] Preferably, a circuit board is mounted on one end of the bracket.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The spring in this vibrating bone conduction speaker vibrates left and right. The spring is not easily deformed, has great elasticity, large amplitude, and deep vibration. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the present invention in an explosion.

[0018] Figure 3 This utility model Figure 1 Enlarged view of section A;

[0019] Figure 4 This is a perspective view of the present utility model.

[0020] In the diagram: 100, Voice coil mounting mechanism; 1, Bracket 1; 2, Circuit board; 3, Coil 1; 4, Coil 2; 5, Bracket 2; 6, Bracket 3; 7, Spring 1; 71, Through hole; 72, Notched groove; 8, Spring 2; 200, Weighting mechanism; 9, Fixing bracket; 91, Protrusion; 92, Groove; 93, Locking block; 10, Weighting ring; 11, Magnet. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-3 This utility model provides a technical solution: a vibration bone conduction speaker, including a voice coil mounting mechanism 100 and a weighting mechanism 200 located inside the voice coil mounting mechanism 100. The voice coil mounting mechanism 100 includes multiple brackets, two coils mounted on the brackets, and two springs. The two springs are arranged centrally symmetrically in the horizontal direction.

[0023] The weighting mechanism 200 includes a fixed frame 9 located inside and extending through the support frame. Weight rings 10 are installed at both the top and bottom of the fixed frame 9. Multiple magnets 11 arranged side-by-side are installed inside the fixed frame 9. One end of a spring sheet is mounted on the fixed frame 9. A circuit board 2 is installed at one end of the support frame 1.

[0024] Circuit board 2 is the carrier of the circuit in the bone conduction speaker, used to connect and fix other electronic components, and to provide a path for the transmission of current.

[0025] The spring clips include spring clip 7 mounted on bracket 25 and spring clip 8 mounted on bracket 36.

[0026] Spring 7 and spring 8 serve as buffers and supports, providing elastic restoring force when the speaker vibrates, ensuring vibration stability, and helping to reduce noise caused by vibration.

[0027] The bracket includes bracket 1, bracket 2 5 and bracket 3 6 located on both sides of bracket 1, and the coil includes coil 1 3 snapped between bracket 1 and bracket 2 5, and coil 2 4 snapped between bracket 1 and bracket 3 6.

[0028] Support 1, support 2, and support 3 are used to support and fix the coil and weighting mechanism 200, ensuring accurate installation of each component and making the structure of the vibration bone conduction speaker stable.

[0029] When current flows through coil 3 and coil 4, a magnetic field is generated, which causes magnet 11 to interact and generate an electromagnetic force, thereby driving the sound-producing component to vibrate.

[0030] The mounting bracket 9 is used to fix the weight ring 10, so that the weight ring 10 maintains a stable position when the speaker vibrates. The weight ring 10 is used to increase the mass of the speaker's vibrating part, adjust the resonant frequency of the vibration system, improve the speaker's low-frequency response performance, and make the sound fuller.

[0031] Multiple magnets 11 provide a stable magnetic field, which interacts with the magnetic field generated by the coil and is the key component for generating vibration.

[0032] The number of coils is not limited to two coils, coil 3 and coil 4. It can also be one or more. The shape of the coils can be designed as a circle, rectangle, square, or oval racetrack shape, etc., and the fixing frame 9 can be an integrated design or a modular design.

[0033] The magnet 11 can be designed and combined from one or more magnets 11, or from magnets 11 with different properties (grades); the combination of multiple coils can be connected in series or in parallel; the weighted coil 10 can also be designed and combined from one or more (not limited to two).

[0034] The spring clips can be fixed by screws, glue, or riveting (choose one of these structural design concepts).

[0035] The shape of this vibrating bone conduction speaker can be trapezoidal, rectangular, square, parallelogram, cylindrical, or other irregular designs.

[0036] The two springs can be combined using different materials and structural designs.

[0037] Claws are provided on both sides of bracket 1, one side of bracket 2 5, and one side of bracket 3 6. The claw on one side of bracket 1 engages with the claw on bracket 2 5 and is engaged with the outer wall of coil 3. The claw on the other side of bracket 1 engages with the claw on bracket 3 6 and is engaged with the outer wall of coil 2 4.

[0038] The fixed frame 9 has two centrally symmetrical protrusions 91 on two non-adjacent sides, and each protrusion 91 has a groove 92 and a locking block 93.

[0039] One end of spring piece 7 and one end of spring piece 8 are provided with a through hole 71 and a notch 72. The through hole 71 is aligned with the groove 92, and the locking block 93 is engaged inside the notch 72.

[0040] When in use, when current passes through circuit board 2 and flows into coil 3 and coil 4, the coil generates a magnetic field. The magnetic field interacts with the constant magnetic field generated by magnet 11 to produce an electromagnetic force. The magnitude and direction of the electromagnetic force change with the change of current, thereby causing the components connected to the coil (such as a diaphragm, not shown in the figure) to vibrate.

[0041] The spring acts as a buffer and stabilizer during the operation of the speaker, ensuring the smoothness of the vibration. The bracket ensures the stability of the position of each component and maintains structural stability. The weighted ring 10 is used to adjust the frequency characteristics of the vibration system, so that the speaker can emit sounds of different frequencies. Finally, the mechanical vibration is transmitted through the air to form the sound that people hear.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vibrating bone conduction horn, characterized in that, It includes a voice coil mounting mechanism (100) and a weighting mechanism (200) located inside the voice coil mounting mechanism (100). The voice coil mounting mechanism (100) includes multiple brackets, two coils mounted on the brackets, and two springs. The two springs are arranged centrally symmetrically in the horizontal direction. The weighting mechanism (200) includes a fixed frame (9) located inside the support and penetrating the support. Weight rings (10) are installed at the top and bottom of the fixed frame (9). Multiple magnets (11) arranged side by side are installed inside the fixed frame (9). One end of the spring is installed on the fixed frame (9).

2. The vibration bone conduction horn according to claim 1, characterized in that: The bracket includes a bracket one (1), a bracket two (5) and a bracket three (6) located on both sides of the bracket one (1), and the coil includes a coil one (3) snapped between the bracket one (1) and the bracket two (5), and a coil two (4) snapped between the bracket one (1) and the bracket three (6).

3. The vibration bone conduction horn according to claim 2, characterized in that: The spring includes spring one (7) mounted on bracket two (5) and spring two (8) mounted on bracket three (6).

4. The vibration bone conduction horn according to claim 3, characterized in that: Claws are provided on both sides of bracket one (1), one side of bracket two (5), and one side of bracket three (6). The claw on one side of bracket one (1) and the claw on bracket two (5) are engaged on the outer wall of coil one (3), and the claw on the other side of bracket one (1) and the claw on bracket three (6) are engaged on the outer wall of coil two (4).

5. The vibration bone conduction horn according to claim 4, characterized in that: The fixing frame (9) has two centrally symmetrical protrusions (91) on two non-adjacent sides, and the protrusions (91) are respectively provided with grooves (92) and locking blocks (93).

6. The vibration bone conduction horn according to claim 5, characterized in that: One end of the spring piece 1 (7) and one end of the spring piece 2 (8) are provided with a through hole (71) and a notch (72). The through hole (71) is aligned with the notch (92), and the locking block (93) is engaged inside the notch (72).

7. The bone conduction horn according to claim 6, characterized in that: A circuit board (2) is mounted on one end of the bracket (1).

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