Stacked-state loudspeaker and earphone

Abstract

The utility model discloses a superposed-state loudspeaker and an earphone. The superposed-state loudspeaker comprises a shell seat; the first bone conduction unit is arranged on the shell seat; the second bone conduction unit is arranged on the shell seat; and the first bone conduction unit and the second bone conduction unit respectively transmit vibration to the shell seat so as to output sound waves with complementary frequency response and / or adaptive volume and / or different timbres. With the adoption of the scheme, the superposed loudspeaker and the earphone which transmit vibration to the shell seat through the first bone conduction unit and the second bone conduction unit respectively so as to realize superposition of frequency, volume and timbre and perform vibration output through the shell seat are provided.

Description

Technical Field

[0001] The utility model belongs to the field of loudspeakers, and in particular relates to a superposition state loudspeaker and earphones. Background Art

[0002] A bone conduction speaker is an electronic component that converts audio signals into its own vibrations and then conducts sound through a solid medium.

[0003] Existing bone conduction speakers are all equipped with a group of vibration units on a carrier, so that the vibration units work to drive the carrier to vibrate, and then the vibration is output through the carrier.

[0004] With the development of the bone conduction field, people's requirements for the quality of speakers are gradually increasing. However, the existing vibration output is only through the work of a single vibration unit, which has limitations in audio, volume, timbre, etc. and can no longer meet people's requirements. Therefore, there is an urgent need to develop higher quality speakers. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a superposition state speaker and earphones that transmit vibrations to the shell seat through the first bone conduction unit and the second bone conduction unit respectively to achieve the superposition of frequency, volume and timbre, and output vibrations through the shell seat.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A superposition-state speaker, characterized in that it includes: a shell base; a first bone conduction unit, the first bone conduction unit being disposed on the shell base; and a second bone conduction unit, the second bone conduction unit being disposed on the shell base; the first bone conduction unit and the second bone conduction unit respectively vibrate the shell base to output sound waves with complementary frequency responses and / or volume adaptation and / or different timbres.

[0008] The present invention is further configured such that the second bone conduction unit adopts a piezoelectric speaker or MEMS.

[0009] The present invention is further configured such that the volume of the second bone conduction unit is less than or equal to the volume of the first bone conduction unit.

[0010] The present invention is further configured as follows: the first bone conduction unit includes a vibration plate, an electromagnetic component and a permanent magnet component, and the vibration plate is vibrated under the action of the electromagnetic component and the permanent magnet component passing audio current.

[0011] The present invention is further configured as follows: the vibrating piece and the electromagnetic component are arranged on the shell base, and the permanent magnet component is arranged on the vibrating piece; or, the vibrating piece and the permanent magnet component are arranged on the shell base, and the electromagnetic component is arranged on the vibrating piece; or, a ferromagnetic body is arranged on the vibrating piece, and the vibrating piece, the electromagnetic component and the permanent magnet component are arranged on the shell base; or, the first bone conduction unit also includes a mounting seat, the mounting seat is arranged on the shell base, the vibrating piece and the electromagnetic component are arranged on the mounting seat, and the permanent magnet component is arranged on the vibrating piece; or, the first bone conduction unit also includes a mounting seat, the mounting seat is arranged on the shell base, the vibrating piece and the permanent magnet component are arranged on the mounting seat, and the electromagnetic component is arranged on the vibrating piece; the first bone conduction unit also includes a mounting seat, a ferromagnetic body is arranged on the vibrating piece, and the vibrating piece, the electromagnetic component and the permanent magnet component are all arranged on the shell base.

[0012] The present invention is further configured as follows: a shell cavity is provided in the shell seat, and the first bone conduction unit is provided in the shell cavity.

[0013] The present invention is further configured as follows: a first opening is provided on one side of the shell cavity, and the second bone conduction unit is provided at the first opening; a second opening is provided on the other side of the shell cavity, and the electromagnetic component and / or the permanent magnet component is provided at the second opening.

[0014] The present invention is further configured as follows: the electromagnetic component is provided with a first connection potential, and the second bone conduction unit is provided with a second connection potential; a conducting wire is provided between the first connection potential and the second connection potential for electrical connection, and the conducting wire passes through the outside of the shell seat; the second connection potential is located on the side of the second bone conduction unit away from the shell cavity; or, the second connection potential is located on the side of the second bone conduction unit facing the shell cavity, and a first wire threading hole is provided on the shell seat, and the conducting wire extends from the first wire threading hole into the shell cavity and is connected to the second connection potential.

[0015] The present invention is further configured as follows: the electromagnetic component includes a bottom shell and a coil, the bottom shell is arranged at the second opening, the coil is arranged on the bottom shell and is built into the shell cavity; the bottom shell is penetrated by a second through hole to connect the shell cavity with the outside world; the permanent magnet component includes a magnetic cylinder and a magnet fixed in the magnetic cylinder, the magnetic cylinder includes a magnetic conductive body with a planar structure and a magnetic conductive wing connected to the magnetic conductive body and extending toward one side thereof, the magnet is fixed in the magnetic cylinder; the gap between the magnet and the magnetic conductive wing forms a magnetic flux cavity; the permanent magnet component also includes a magnetic conductive sheet, one side of the magnet is fixed to the bottom surface of the magnetic cylinder, and the other side is fixed to the magnetic conductive sheet.

[0016] A headset, characterized by comprising the above-mentioned superposition state speaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a cross-sectional view of the first embodiment of the present utility model;

[0019] Figure 2 This is an exploded view of the first embodiment of the present utility model;

[0020] Figure 3 for Figure 1 A magnified view of middle A;

[0021] Figure 4 This is a cross-sectional view of the second embodiment of the present utility model;

[0022] Figure 5 A cross-sectional view of another embodiment of the present invention;

[0023] Figure 6 This is a cross-sectional view of another embodiment of the present invention.

[0024] Description of reference numerals:

[0025] 1. Shell seat;

[0026] 11. Shell cavity; 12. First opening; 13. Second opening; 14. First threading hole;

[0027] 2. The first bone conduction unit;

[0028] 21. Vibrating piece; 22. Electromagnetic component; 23. Permanent magnet component; 24. Ferromagnetic body; 25. Mounting base;

[0029] 221, bottom shell; 222, coil; 223, first potential connection; 231, magnetic cylinder; 232, magnet; 233, magnetic conductive sheet;

[0030] 2211, third potential connection; 2212, fourth potential connection; 2213, second through hole; 2214, second threading through hole; 2311, magnetic conductive body; 2312, magnetic conductive wings; 2313, magnetic flux cavity;

[0031] 3. Second bone conduction unit;

[0032] 31. Second connection potential;

[0033] 4. Connect the wires. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the present invention and thus more clearly define the scope of protection claimed by the present invention, the present invention is described in detail below with respect to certain specific embodiments of the present invention. It should be noted that the following are only certain specific implementation methods of the present invention, which are only part of the embodiments of the present invention. The specific and direct description of the relevant structures is only for the convenience of understanding the present invention, and the specific features do not naturally and directly limit the scope of implementation of the present invention. The conventional selections and replacements made by those skilled in the art under the guidance of the present invention should be deemed to be within the scope of protection claimed by the present invention.

[0035] Example 1:

[0036] like Figures 1-6 As shown, the utility model discloses a superposition state loudspeaker, comprising:

[0037] Shell seat 1;

[0038] A first bone conduction unit 2 is provided on the housing 1; and

[0039] A second bone conduction unit 3, which is disposed on the housing 1;

[0040] The first bone conduction unit 2 and the second bone conduction unit 3 respectively transmit vibrations to the housing 1 to complement each other in outputting frequency, volume or sound quality.

[0041] Therefore, the shell base 1 adopts the first bone conduction unit 2 and the second bone conduction unit 3. When the audio current is passed through, the first bone conduction unit 2 and the second bone conduction unit 3 will both vibrate and transmit vibration to the shell base 1, so that the shell base 1 superimposes the vibration output under the action of the first bone conduction unit 2 and the second bone conduction unit 3, that is, the shell base 1 superimposes the sound waves of different frequency responses, different volumes and different timbres of the first bone conduction unit 2 and the second bone conduction unit 3 and outputs them to achieve better sound quality.

[0042] Preferably, the first bone conduction unit 2 and the second bone conduction unit 3 are different bone conduction units, so that each bone conduction unit has its own advantages, thereby improving the quality of the superimposed speaker output.

[0043] Specifically, the first bone conduction unit 2 in this embodiment adopts a traditional vibration plate 21 structure, with a large-amplitude vibration shell 1 to ensure the output volume, while the second bone conduction unit 3 adopts high-frequency structures such as piezoelectric speakers and MEMS, and uses a high-frequency vibration shell 1 to compensate for the problem of insufficient high-frequency output of the first bone conduction unit 2.

[0044] The shell base 1 is cylindrical, so that a cylindrical shell cavity 11 is formed inside the shell base 1, and a first opening 12 and a second opening 13 are formed at the upper and lower ends of the shell cavity 11 respectively, wherein the first bone conduction unit 2 is arranged in the shell cavity 11, and the second bone conduction unit 3 is arranged at the first opening 12.

[0045] Specifically, the first bone conduction unit 2 includes a vibrator 21, an electromagnetic component 22 and a permanent magnet component 23. The outer periphery of the vibrator 21 is fixed to the peripheral wall of the shell cavity 11 by means of clipping, bonding, etc., the electromagnetic component 22 is fixed to the peripheral wall of the shell cavity 11, and the permanent magnet component 23 is fixed at the center of the vibrator 21. When the audio current passes through the electromagnetic component 22, it is affected by the magnetic field of the permanent magnet component 23 and vibrates relatively.

[0046] In other embodiments, the permanent magnet component 23 may be fixedly disposed on the peripheral wall of the shell cavity 11 , and the electromagnetic component 22 may be fixedly disposed at the center of the vibration piece 21 , and the effects achieved are similar.

[0047] In other embodiments, please refer to Figure 5 As shown, the first bone conduction unit 2 may also include a mounting base 25 arranged on the shell base 1 for installing the vibrating piece 21, the electromagnetic component 22, and the permanent magnet component 23 on the first bone conduction unit 2. The mounting base 25 is vibrated by the electromagnetic component 22 and the permanent magnet component 23, and then the shell base 1 is vibrated through the mounting base 25.

[0048] That is, the first bone conduction unit 2 can be assembled on the housing base 1 using bulk components, or a complete bone conduction speaker can be assembled on the housing base 1.

[0049] In other embodiments, please refer to Figure 6 As shown, the permanent magnet component 23 and the electromagnetic component 22 can also be arranged on the peripheral wall of the shell cavity 11, and the ferromagnetic body 24 can be arranged at the center of the vibration plate 21, so that the electromagnetic component 22 generates a variable magnetic field through the audio current and the constant magnetic field generated by the permanent magnet component 23 is superimposed on the ferromagnetic body 24 to achieve magnetic attraction and vibration.

[0050] The ferromagnetic body 24 may be integrally formed on the vibration plate 21 , or may be fixed to the vibration plate 21 by bonding, snapping, or other methods.

[0051] Furthermore, it should be noted that the piezoelectric speaker and MEMS are thin-film structures. This allows the interior space of the housing 11 to accommodate the first bone conduction unit 2, while the second bone conduction unit 3 is attached to the first opening 12 without significantly increasing the overall volume of the superimposed speaker, thereby achieving a smaller overall volume. This allows the volume of the second bone conduction unit 3 to be less than or equal to 20% of the volume of the first bone conduction unit 2. This allows the first bone conduction unit 2 to serve as the primary vibration output structure, while the smaller second bone conduction unit 3 is used to complement it, resulting in a minimal increase in volume.

[0052] It should be noted that the ferromagnetic body 24 is made of a material that is magnetically attracted under a magnetic field, such as iron, cobalt, nickel, and the like.

[0053] Among them, a conducting wire 4 is provided between the first bone conduction unit 2 and the second bone conduction unit 3, so that the two are connected to the circuit in series or parallel, so that the audio current supplies power and vibration to the first bone conduction unit 2 and the second bone conduction unit 3 respectively. This embodiment specifically adopts a parallel method.

[0054] Specifically, the electromagnetic component 22 is arranged at the second opening 13. In addition, the electromagnetic component 22 is provided with a first connection potential 223, which is divided into positive and negative poles. The second bone conduction unit 3 is provided with a second connection potential 31, which is also divided into positive and negative poles. The positive and negative poles of the first connection potential 223 and the second connection potential 31 are respectively electrically connected through the conductive wire 4, and the conductive wire 4 is located on the outside of the shell 1, so that while ensuring the electrical connection, the wiring from the outside has less impact on the internal vibration, and prevents the conductive wire 4 from interfering with the vibration of the first bone conduction unit 2 to produce noise.

[0055] In this embodiment, the second ground potential 31 is located on the side of the second bone conduction unit 3 facing the shell cavity 11, that is, Figure 1 On the upper side, the housing base 1 is provided with a square first threading hole 14 on the side wall at the first opening 12, for the conductive wire 4 to pass through the first threading hole 14 from the outside of the housing base 1 into the housing cavity 11 and connect to the second potential 31.

[0056] Specifically, the electromagnetic assembly 22 in this embodiment includes a bottom shell 221 and a coil 222. The bottom shell 221 is fixed at the second opening 13 by means of clipping, bonding, etc. The coil 222 is located at the lower side of the bottom shell 221 and placed in the shell cavity 11, and is fixed to the bottom shell 221.

[0057] Preferably, a second through hole 2213 is provided through the bottom shell 221 to connect the shell cavity 11 upward to the outside world to form a non-closed structure, and assisted by the notch on the vibration plate 21, the vibration plate 21 can vibrate completely freely when vibrating in the shell cavity 11 without being affected by the sealing of the shell cavity 11.

[0058] Preferably, the bottom housing 221 is a PCB board, the center of which is hollowed out to form a second through hole 2213. A third potential connection 2211 and a fourth potential connection 2212 are provided on the PCB board; the third potential connection 2211 is electrically connected to the coil 222, and the fourth potential connection 2212 is used to form an electrical connection terminal for the superposition state speaker.

[0059] Preferably, the third potential connection 2211 and the fourth potential connection 2212 are both arranged on the side of the PCB board away from the shell cavity 11, and a second wire through hole 2214 is provided through the PCB board. The coil 222 is electrically connected to the third potential connection 2211 after passing through the second wire through hole 2214.

[0060] Preferably, the first potential connection 223 and the third potential connection 2211 are at the same position to make the structure more compact.

[0061] Specifically, the permanent magnet assembly 23 in this embodiment includes a magnetic cylinder 231 and a magnet 232 fixed in the magnetic cylinder 231. The magnetic cylinder 231 includes a magnetic body 2311 with a planar structure and a magnetic wing 2312 connected to the magnetic body 2311 and extending toward one side thereof. The magnet 232 is fixed in the magnetic cylinder 231. The gap between the magnet 232 and the magnetic wing 2312 forms a magnetic flux cavity 2313. In addition, a magnetic sheet 233 is provided on the side of the magnet 232 facing away from the magnetic body 2311. The magnetic lines of force of the magnet 232 can be guided by the action of the magnetic cylinder 231 and the magnetic sheet 233, so that it can better interact with the magnetic field generated after the coil 222 is energized to vibrate and make sound.

[0062] In other embodiments, the magnetic conductive sheet 233 is not provided.

[0063] Example 2:

[0064] like Figure 4 As shown, the present invention also discloses a superposition state speaker, the main structure of which is the same as that of the first embodiment, except that the second potential 31 is located on the side of the second bone conduction unit 3 away from the shell cavity 11, that is, Figure 4 The downward side of the housing 1 does not need to be provided with a first through hole. The conducting wire 4 can be directly passed downward over the second bone conduction unit 3 and connected to the second ground potential 31 below the second bone conduction unit 3.

[0065] Example 3:

[0066] A superposition state speaker, whose main structure is the same as that of embodiment 1 or embodiment 2, except that the first bone conduction unit 2 also adopts a piezoelectric speaker or MEMS.

[0067] Example 4:

[0068] A superposition state speaker has the same main structure as that of the first or second embodiment, except that the second bone conduction unit 3 also uses a vibration plate 21, an electromagnetic component 22, and a permanent magnet component 23.

[0069] More specifically, in one embodiment, the electromagnetic assembly 22 and the permanent magnet assembly 23 are separately disposed on the vibration plate 21 and the housing 1, so that the two vibrate by electromagnetic induction. In a second embodiment, the electromagnetic assembly 22 and the permanent magnet assembly 23 are both disposed on the housing 1, and a ferromagnetic body 24 is disposed on the vibration plate 21. The variable magnetic field generated by the combination of the electromagnetic assembly 22 and the permanent magnet assembly 23 magnetically attracts the ferromagnetic body 24, causing it to vibrate.

[0070] In addition, similarly, the second bone conduction unit 3 may also include a mounting base 25 disposed on the housing 1 for mounting the vibrating piece 21 , the electromagnetic component 22 , and the permanent magnet component 23 on the second bone conduction unit 3 .

[0071] Embodiment 5:

[0072] The utility model discloses an earphone, comprising a superposition state loudspeaker according to any one of the first to fourth embodiments.

[0073] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A superposition state loudspeaker, characterized in that: include: Shell seat (1); A first bone conduction unit (2), the first bone conduction unit (2) being arranged on the housing (1); and, a second bone conduction unit (3), the second bone conduction unit (3) being arranged on the housing (1); The first bone conduction unit (2) and the second bone conduction unit (3) respectively transmit vibrations to the housing (1) to output sound waves with complementary frequency responses and / or adapted volume and / or different timbre.

2. The superposition state speaker according to claim 1, characterized in that: The second bone conduction unit (3) adopts a piezoelectric speaker or MEMS.

3. The superposition state speaker according to claim 1, characterized in that: The volume of the second bone conduction unit (3) is less than or equal to the volume of the first bone conduction unit (2).

4. The superposition state loudspeaker according to any one of claims 1 to 3, characterized in that: The first bone conduction unit (2) comprises a vibration plate (21), an electromagnetic component (22) and a permanent magnet component (23), and the vibration plate (21) is vibrated under the action of the electromagnetic component (22) and the permanent magnet component (23) through which audio current flows.

5. The superposition state speaker according to claim 4, characterized in that: The vibrating plate (21) and the electromagnetic component (22) are arranged on the housing seat (1), and the permanent magnet component (23) is arranged on the vibrating plate (21); or, The vibrating plate (21) and the permanent magnet assembly (23) are arranged on the housing seat (1), and the electromagnetic assembly (22) is arranged on the vibrating plate (21); or, A ferromagnetic body (24) is provided on the vibration plate (21), and the vibration plate (21), the electromagnetic component (22) and the permanent magnet component (23) are provided on the housing seat (1); or, The first bone conduction unit (2) further comprises a mounting seat (25), the mounting seat (25) being arranged on the housing seat (1), the vibration plate (21) and the electromagnetic component (22) being arranged on the mounting seat (25), and the permanent magnet component (23) being arranged on the vibration plate (21); or, The first bone conduction unit (2) further comprises a mounting seat (25), the mounting seat (25) being arranged on the housing seat (1), the vibration plate (21) and the permanent magnet component (23) being arranged on the mounting seat (25), and the electromagnetic component (22) being arranged on the vibration plate (21); or, The first bone conduction unit (2) further comprises a mounting seat (25), a ferromagnetic body (24) is provided on the vibration plate (21), and the vibration plate (21), the electromagnetic component (22) and the permanent magnet component (23) are all provided on the housing seat (1).

6. The superposition state speaker according to claim 4, characterized in that: A shell cavity (11) is provided in the shell seat (1), and the first bone conduction unit (2) is provided in the shell cavity (11).

7. The superposition state speaker according to claim 6, characterized in that: A first opening (12) is provided on one side of the shell cavity (11), and the second bone conduction unit (3) is provided at the first opening (12); A second opening (13) is provided on the other side of the shell cavity (11), and the electromagnetic component (22) and / or the permanent magnet component (23) is provided at the second opening (13).

8. The superposition state speaker according to claim 7, characterized in that: The electromagnetic component (22) is provided with a first connection potential (223), and the second bone conduction unit (3) is provided with a second connection potential (31); A conductive wire (4) is provided between the first potential connection (223) and the second potential connection (31) for electrical connection, and the conductive wire (4) passes through the outside of the housing seat (1); The second ground potential (31) is located on a side of the second bone conduction unit (3) facing away from the shell cavity (11); or, The second connection potential (31) is located on the side of the second bone conduction unit (3) facing the shell cavity (11), and a first threading hole (14) is provided on the shell seat (1). The conducting wire (4) extends from the first threading hole (14) into the shell cavity (11) and is connected to the second connection potential (31).

9. The superposition state speaker according to claim 7, characterized in that: The electromagnetic assembly (22) comprises a bottom shell (221) and a coil (222), wherein the bottom shell (221) is arranged at the second opening (13), and the coil (222) is arranged on the bottom shell (221) and is built into the shell cavity (11); The bottom shell (221) is provided with a second through hole (2213) to connect the shell cavity (11) with the outside world; The permanent magnet assembly (23) comprises a magnetic cylinder (231) and a magnet (232) fixed in the magnetic cylinder (231); the magnetic cylinder (231) comprises a magnetic conductive body (2311) in a planar structure and a magnetic conductive wing (2312) connected to the magnetic conductive body (2311) and extending toward one side thereof; the magnet (232) is fixed in the magnetic cylinder (231); The gap between the magnet (232) and the magnetic wing (2312) forms a magnetic flux cavity (2313); The permanent magnet assembly (23) further includes a magnetic conductive sheet (233); one side of the magnet (232) is fixed to the bottom surface of the magnetic cylinder (231), and the other side is fixed to the magnetic conductive sheet (233).

10. A headset, characterized in that: The present invention comprises the superposition state loudspeaker according to any one of claims 1 to 9.

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