CN218243813U

CN218243813U - Bone conduction speaker oscillator and bone conduction earphone

Info

Publication number: CN218243813U
Application number: CN202222564829.7U
Authority: CN
Inventors: 戴昌谱
Original assignee: Ganzhou Yilufa Electronic Technology Co ltd
Current assignee: Ganzhou Yilufa Electronic Technology Co ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-01-06
Anticipated expiration: 2032-09-27

Abstract

The utility model belongs to the technical field of the earphone, a bone conduction speaker oscillator and bone conduction earphone is related to, wherein, bone conduction speaker oscillator includes the shell and sets up the vibration subassembly in the shell, the vibration subassembly includes the voice coil loudspeaker voice coil that sets firmly in the bottom surface of shell, hangs the magnetic circuit unit that sets up above the voice coil loudspeaker voice coil and sets firmly the trembler at the magnetic circuit unit top; the vibrating reed comprises a positioning inner ring, an outer ring and a plurality of vibration transmission arms, the positioning inner ring and the outer ring are coaxially arranged, the positioning inner ring is fixed with the magnetic circuit unit, the outer ring is fixed with the shell, and the vibration transmission arms are arc-shaped and are in central symmetry relative to the positioning inner ring of the vibrating reed; when the voice coil is electrified, the magnetic circuit unit longitudinally moves in the voice coil to drive the vibrating plate to vibrate; the bone conduction loudspeaker vibrator has the advantages that the vibration piece is better in elasticity, larger in vibration frequency amplitude and more excellent in low-frequency sound performance, and the technical problem that the vibration effect of the existing bone conduction loudspeaker vibrator is poor is solved.

Description

Bone conduction speaker oscillator and bone conduction earphone

Technical Field

The utility model relates to an earphone technical field especially relates to a bone conduction speaker oscillator and bone conduction earphone.

Background

At present, bone conduction earphones adopt bone conduction speakers, and transmit sound waves by using the bone conduction speakers and carriers of human skull, inner ear lymph, auditory nerves and the like, so that people can hear sounds. The bone conduction earphone is used, the earphone does not need to be plugged in the ear, the ear can be opened, the damage to the eardrum is reduced, and the external sound can be clearly heard even under the noisy condition. Therefore, bone conduction headsets are a new choice for many people's sports commute.

However, the existing bone conduction speaker vibrator has poor vibration effect and low output power of vibration and sound, so that the low-frequency expression effect is not ideal, and the bone conduction earphone has poor tone quality and cannot meet the requirement of hearing of people.

Therefore, it is an urgent task for those skilled in the art to improve the prior art and enhance the vibration effect of the bone conduction speaker vibrator to make the low frequency performance of the bone conduction earphone better.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In view of the above-mentioned shortcoming, the deficiency of prior art, the utility model provides a bone conduction speaker oscillator and bone conduction earphone, it has solved the not good technical problem of vibration effect of current bone conduction speaker oscillator.

(II) technical scheme

In order to achieve the above object, the utility model discloses a main technical scheme include:

in a first aspect, an embodiment of the present invention provides a bone conduction speaker vibrator, including a housing and a vibration assembly disposed in the housing, where the vibration assembly includes a voice coil fixed on a bottom surface of the housing, a magnetic circuit unit suspended above the voice coil, and a vibration plate fixed on a top of the magnetic circuit unit; the vibrating reed comprises a positioning inner ring, a positioning outer ring and a plurality of vibration transmission arms which are coaxially arranged and are connected with the positioning inner ring and the positioning outer ring, the positioning inner ring is fixed with the magnetic circuit unit, the outer ring is fixed with the shell, and the vibration transmission arms are arc-shaped and are in central symmetry with the positioning inner ring of the vibrating reed; when the voice coil is electrified, the magnetic circuit unit moves longitudinally in the voice coil to drive the vibrating plate to vibrate.

Optionally, the top surface of the magnetic circuit unit is provided with a boss matched with the positioning inner ring, and the positioning inner ring is fixedly mounted on the top surface of the boss.

Optionally, three vibration transmission arms are provided, and the distance between each vibration transmission arm is equal.

Optionally, the thickness of the vibrating plate is more than or equal to 0.7mm and less than or equal to 1mm.

Optionally, the shell includes casing main part and protecting cover mutually supporting, and the top of casing main part's inside wall is provided with the step along its circumferential direction, and the outer loop of trembler is installed on the step, and protecting cover fixed mounting is at the top surface of outer loop.

Optionally, the central position of the protective cover is provided with a sound guide hole.

Optionally, the oscillator further comprises a PCB, the bottom wall bottom surface of the housing body is provided with a sinking platform, and the PCB is fixedly mounted in the sinking platform and electrically connected with the voice coil.

Optionally, the sinking platform is provided with a wire passing hole at a position corresponding to the edge of the PCB, the edge of the PCB is provided with a wire dividing groove, and the lead of the voice coil is electrically connected with the PCB through the wire passing hole and the wire dividing groove.

Optionally, the magnetic circuit unit comprises an iron cup, a magnet and a magnetic conducting plate from top to bottom, the iron cup is inverted, the bottom surface of the iron cup is provided with an installation groove, the magnet is fixedly installed in the installation groove, the magnetic conducting plate is fixed on the bottom surface of the magnet, and a magnetic gap is formed between the magnetic conducting plate and the side wall of the iron cup; the top surface of the bottom wall of the shell body is provided with an annular groove, the lower end of the voice coil is fixedly arranged in the annular groove, and the upper end of the voice coil is arranged in the magnetic gap.

In a second aspect, an embodiment of the present invention provides a bone conduction earphone, including the aforementioned bone conduction speaker vibrator.

(III) advantageous effects

The beneficial effects of the utility model are that:

the utility model discloses a osteoacusis speaker oscillator and osteoacusis earphone improves current trembler, the trembler includes the location inner ring of coaxial setting, the outer loop and a plurality of biography vibration arms of connection location inner ring and outer loop, for prior art, the elasticity of trembler is better, the vibration frequency range is bigger, the vibration sense is stronger, improve the output of vibration and sound, the low frequency performance that makes osteoacusis earphone is more outstanding, experience for the user provides better hearing, the not good technical problem of vibration effect of current osteoacusis speaker oscillator has been solved.

Drawings

Fig. 1 is one of the schematic three-dimensional diagrams of the vibrator according to the embodiment of the bone conduction speaker vibrator and the bone conduction earphone of the present invention;

fig. 2 is a second schematic perspective view of an oscillator according to an embodiment of the bone conduction speaker oscillator and the bone conduction earphone of the present invention;

fig. 3 is a schematic diagram illustrating an oscillator decomposition of an embodiment of the bone conduction speaker oscillator and the bone conduction earphone according to the present invention;

fig. 4 is a second exploded view of the vibrator according to the embodiment of the bone conduction speaker vibrator and the bone conduction earphone of the present invention;

fig. 5 is a vibrator cross-sectional view of an embodiment of a bone conduction speaker vibrator and a bone conduction earphone of the present invention.

[ instruction of reference ]

1. A protective cover; 11. a sound guide hole;

2. a vibrating piece; 21. positioning the inner ring; 22. a vibration transmission arm; 23. an outer ring;

31. an iron cup; 310. a magnetic gap; 311. a boss; 312. a positioning column; 313. mounting grooves; 32. a magnet; 33. a magnetic conductive plate;

4. a voice coil;

5. a housing main body; 51. sinking a platform; 52. a wire passing hole; 53. an annular groove;

6. a PCB board; 61. a wire dividing groove.

Detailed Description

For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings. In which the terms "upper" and "lower" are used herein with reference to the orientation of fig. 3, the direction of the cover 1 is "upper" and the direction of the PCB 6 is "lower".

The embodiment of the utility model provides a bone conduction speaker oscillator and bone conduction earphone, bone conduction speaker oscillator include the shell and set up the vibration subassembly in the shell, the vibration subassembly includes the voice coil loudspeaker voice coil that sets firmly in the bottom surface of shell, hangs the magnetic circuit unit that sets up above the voice coil loudspeaker voice coil and sets firmly the trembler at the top of magnetic circuit unit; the vibrating reed comprises a positioning inner ring, a positioning outer ring and a plurality of vibration transmission arms which are coaxially arranged and are connected with the positioning inner ring and the positioning outer ring, the positioning inner ring is fixed with the magnetic circuit unit, the outer ring is fixed with the shell, and the vibration transmission arms are arc-shaped and are in central symmetry with the positioning inner ring of the vibrating reed; when the voice coil is electrified, the magnetic circuit unit longitudinally moves in the voice coil to drive the vibrating plate to vibrate; because the trembler includes location inner ring, the outer loop of coaxial setting and connects a plurality of biography arms that shake of location inner ring and outer loop, for prior art, the elasticity of trembler is better, and the vibration frequency amplitude is bigger, improves the output of vibration and sound, makes the low frequency performance of bone conduction earphone more outstanding, experiences for the user provides better hearing, has solved the not good technical problem of vibration effect of current bone conduction speaker oscillator.

In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

Example 1:

referring to fig. 1 and 2, the present embodiment provides a bone conduction speaker vibrator including a case, a vibration assembly provided in the case, and a PCB board 6 provided at a bottom end surface of the case.

Referring to fig. 3 and 5, the vibration assembly may generate mechanical vibration, and includes, from bottom to top, a voice coil 4, a magnetic circuit unit, and a vibration plate 2 fixed to the magnetic circuit unit, where the peripheral edge of the vibration plate 2 is fixed to the inner wall of the housing, so that the magnetic circuit unit is suspended. When the voice coil 4 is electrified, the voice coil 4 is fixed, and the magnetic circuit unit moves longitudinally in the voice coil 4 to drive the vibrating reed 2 to vibrate.

Referring to fig. 3 to 5, the housing provides a cavity for accommodating the vibration assembly, and includes a housing body 5 and a cover 1 that are engaged with each other. The casing main body 5 is bowl-shaped, the material of the casing main body can be light aluminum, the bottom surface of the bottom wall of the casing main body 5 is provided with a sinking platform 51, the PCB 6 is fixedly arranged in the sinking platform 51, the sinking platform 51 is provided with a wire passing hole 52 at the position corresponding to the edge of the PCB 6, the edge of the PCB 6 is provided with a wire dividing groove 61, and the lead wire of the voice coil 4 is electrically connected with the PCB 6 through the wire passing hole 52 and the wire dividing groove 61. The sinking platform 51 provides a space for the PCB 6 to prevent the PCB 6 from being pressed. The branching groove 61 functions as branching guide. The top surface of the bottom wall of the housing main body 5 is provided with an annular groove 53, and the lower end of the voice coil 4 is fixedly mounted in the annular groove 53. The wire through hole 52 is located in the annular groove 53. The top of the case body 5 is provided with an opening, the inner side wall of the opening is provided with steps along the circumferential direction thereof, and the peripheral edge of the vibrating piece 2 is placed on the steps. The protecting cover 1 is arranged above the vibrating plate 2 and is in contact with the edge of the top surface of the vibrating plate 2, the vibrating plate 2 is protected, vibration is transmitted, mechanical vibration of the vibrating assembly is transmitted to auditory nerves through bones, and a human body hears sound. The central position of the protective cover 1 is provided with a sound guide hole 11.

Referring to fig. 3 to 4, the vibrating plate 2 is a resilient member, and is made of a resilient material, such as steel, various light alloys, plastics, and so on. The vibrating piece 2 includes a positioning inner ring 21, an outer ring 23, and three vibration transmission arms 22 connecting the positioning inner ring 21 and the outer ring 23, which are coaxially disposed, and distances between the vibration transmission arms 22 are equal. The positioning inner ring 21 and the magnetic circuit unit are fixed together, the outer ring 23 is clamped on a step at the top end of the shell body 5, the three vibration transmission arms 22 are all arc-shaped and are centrosymmetric relative to the positioning inner ring 21, namely the overall shape of the vibrating reed 2 is a centrosymmetric figure; the thickness of the vibrating piece 2 is more than or equal to 0.7mm and less than or equal to 1mm. The trembler 2 that sets up like this, its elasticity is better, and the vibration is more even, under the same input energy, makes trembler 2 produce bigger displacement to let bone conduction speaker realize higher sensitivity, improve the output of vibration and sound, it is more outstanding to the performance of low frequency sound, and tone quality is better, experiences for the user provides better listening sense.

During production use, the vibration transfer arms 22 are provided with at least two, and usually three or four.

Referring to fig. 3 and 5, the magnetic circuit unit may provide a magnetic field. The magnetic circuit unit includes an iron cup 31, a magnet 32, and a magnetic conductive plate 33 from top to bottom. The iron cup 31 is inverted, the bottom surface of the bottom wall of the iron cup is provided with a mounting groove 313, the magnet 32 is fixedly mounted in the mounting groove 313, the magnetic conducting plate 33 is fixed on the bottom surface of the magnet 32, and a magnetic gap 310 is formed between the magnetic conducting plate 33 and the side wall of the iron cup 31 to provide a uniform magnetic field for the voice coil 4. The upper end of the voice coil 4 is placed in the magnetic gap 310. The magnetic conductive plate 33 is used for magnetic conduction, and low-carbon steel with low carbon content is used for reducing the magnetic resistance.

As shown in fig. 4 and 5, the top surface of the bottom wall of the iron cup 31 is provided with a boss 311 matched with the positioning inner ring 21 of the vibrating piece 2, the size of the boss 311 is the same as that of the positioning inner ring 21, the positioning inner ring 21 is assembled with the positioning post 312, so that the vibrating piece 2 is fixed on the top surface of the boss 311, and the installation is convenient. The provision of the boss 311 increases the amplitude space of the vibrating piece 2.

The fixing method of the voice coil 4 to the case body 5, the magnet 32 and the magnetic conductive plate 33, the magnet 32 to the iron cup 31, the diaphragm to the iron cup 31, and the cover 1 to the case body 5 may be various methods such as bonding, welding, and fastening.

During assembly, the PCB 6 and the voice coil 4 are correspondingly fixed on the bottom surface and the top surface of the bottom wall of the shell main body 5, then the magnetic circuit unit is assembled, the vibrating piece 2 and the magnetic circuit unit are fixedly assembled into a whole, the whole is arranged in the shell main body 5 and is clamped with the step on the inner side wall of the shell main body 5, and finally the protecting cover 1 is installed; therefore, the bone conduction speaker vibrator is simple in structure, low in installation operation difficulty and easy to assemble.

Example 2:

in addition to embodiment 1, embodiment 2 provides a bone conduction earphone, and the bone conduction earphone employs the speaker vibrator described above.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.

In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

While embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that modifications, adaptations, substitutions and variations of the above embodiments may occur to one of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A bone conduction speaker vibrator, characterized by: the vibration device comprises a shell and a vibration assembly arranged in the shell, wherein the vibration assembly comprises a voice coil (4) fixedly arranged on the bottom surface of the shell, a magnetic circuit unit suspended above the voice coil (4) and a vibrating piece (2) fixedly arranged on the top of the magnetic circuit unit;

the vibrating piece (2) comprises a positioning inner ring (21), an outer ring (23) and a plurality of vibration transmission arms (22) which are coaxially arranged and are used for connecting the positioning inner ring (21) and the outer ring (23), the positioning inner ring (21) is fixed with the magnetic circuit unit, the outer ring (23) is fixed with the shell, and the vibration transmission arms (22) are arc-shaped and are in central symmetry with the positioning inner ring (21);

when the voice coil (4) is electrified, the magnetic circuit unit longitudinally moves in the voice coil (4) to drive the vibrating plate (2) to vibrate.

2. A bone conduction speaker vibrator as claimed in claim 1, wherein: the top surface of the magnetic circuit unit is provided with a boss (311) matched with the positioning inner ring (21), and the positioning inner ring (21) is fixedly arranged on the top surface of the boss (311).

3. A bone conduction speaker vibrator as claimed in claim 2, wherein: the number of the vibration transmission arms (22) is three, and the distances between the vibration transmission arms (22) are equal.

4. A bone conduction speaker vibrator as claimed in claim 3, wherein: the thickness of the vibrating reed (2) is more than or equal to 0.7mm and less than or equal to 1mm.

5. A bone conduction speaker vibrator as claimed in claim 1, wherein: the shell is including casing main part (5) and protecting cover (1) of mutually supporting, the top of the inside wall of casing main part (5) is provided with the step along its circumference direction, outer loop (23) are installed on the step, protecting cover (1) fixed mounting is in the top surface of outer loop (23).

6. A bone conduction speaker vibrator according to claim 5, wherein: the central position of the protecting cover (1) is provided with a sound guide hole (11).

7. A bone conduction speaker vibrator according to claim 5, wherein: the oscillator further comprises a PCB (printed circuit board) (6), a sinking platform (51) is arranged on the bottom surface of the bottom wall of the shell body (5), and the PCB (6) is fixedly installed in the sinking platform (51) and electrically connected with the voice coil (4).

8. A bone conduction speaker vibrator as claimed in claim 7, wherein: the sinking platform (51) is provided with a wire passing hole (52) at a position corresponding to the edge of the PCB (6), the edge of the PCB (6) is provided with a wire dividing groove (61), and a lead wire of the voice coil (4) is electrically connected with the PCB (6) through the wire dividing groove (61) by the wire passing hole (52).

9. A bone conduction speaker vibrator according to claim 8, wherein: the magnetic circuit unit comprises an iron cup (31), a magnet (32) and a magnetic conducting plate (33) from top to bottom, the iron cup (31) is inverted, the bottom surface of the iron cup is provided with an installation groove (313), the magnet (32) is fixedly installed in the installation groove (313), the magnetic conducting plate (33) is fixed on the bottom surface of the magnet (32), and a magnetic gap (310) is formed between the magnetic conducting plate (33) and the side wall of the iron cup (31);

the top surface of the bottom wall of the shell body (5) is provided with an annular groove (53), the lower end of the voice coil (4) is fixedly installed in the annular groove (53), and the upper end of the voice coil is placed in the magnetic gap (310).

10. A bone conduction headset characterized by: comprising a bone conduction speaker vibrator according to any one of claims 1 to 9.