CN214544774U - Bone conduction speaker and earphone with same - Google Patents

Abstract

The utility model discloses a bone conduction speaker, include the conduction shell, locate the vibrating diaphragm of a conduction shell terminal surface and locating the conduction piece of tip down in the conduction shell, conduction piece, conduction shell and vibrating diaphragm surround and are formed with an accommodation space, accommodation space accepts coil and the magnetic component who is used for producing magnetic field, just the coil is fixed in the vibrating diaphragm internal surface. Compared with the prior art, the utility model discloses use the vibrating diaphragm to replace this terminal surface of traditional conduction shell in a conduction shell terminal surface, make the utility model discloses a bone conduction speaker accessible conduction piece and both vibration conductions of vibrating diaphragm, accessible vibrating diaphragm transmission bass when not increasing electric current has improved conduction efficiency and has reduced the consumption simultaneously. Also discloses an earphone with the bone conduction speaker.

Description

Bone conduction speaker and earphone with same

Technical Field

The utility model relates to an acoustics conversion technology field, more specifically relate to a bone conduction speaker and have earphone of this bone conduction speaker.

Background

Bone conduction is a sound conduction mode, namely, the sound is converted into mechanical vibration with different frequencies, sound waves are transmitted through the skull, the bone labyrinth, the lymph transmission of the inner ear, the spiral organ, the auditory nerve and the auditory center of a person, compared with the classical sound conduction mode of generating the sound waves through the vibrating diaphragm, the bone conduction omits a plurality of sound wave transmission steps, clear sound restoration can be realized in a noisy environment, and the sound waves can not influence other people due to diffusion in the air.

The bone conduction speaker is a novel electroacoustic conversion device developed based on the sound conduction mode of bone conduction, and can convert an electric signal into a mechanical vibration signal, and transmit the vibration signal into a cochlea through human tissues and bones, so that a user can hear sound, and the eardrum of people can not be damaged due to clear bone conduction sound without being influenced by the external environment, and therefore the bone conduction speaker is widely applied to the fields of earphones and the like. However, the conventional bone conduction vibration speaker has low sound transmission efficiency, and needs to increase inductance to improve efficiency when transmitting bass, so that power consumption is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a bone conduction speaker and have this bone conduction speaker that conduction efficiency is high and the consumption is less is provided.

In order to solve the technical problem, according to the utility model discloses an aspect provides a bone conduction speaker, include the conduction shell, locate the vibrating diaphragm of a conduction shell terminal surface and locating the conduction piece of tip down in the conduction shell, conduction piece, conduction shell and vibrating diaphragm surround and are formed with an accommodation space, accommodation space accepts coil and the magnetic component who is used for producing magnetic field, just the coil is fixed in the vibrating diaphragm internal surface.

The further technical scheme is as follows: the conduction shell comprises a first shell, a first support and a second support, the vibration diaphragm is located on the first shell, the second support is sleeved outside the first support, the upper end of the first support and the upper end of the second support are located in the first shell, one end of the conduction piece is located between the upper end of the first support and the upper end of the second support, the other end of the conduction piece is located in the first shell, the magnetic component is located on the first support, and the coil corresponds to the magnetic component and is arranged on the inner surface of the vibration diaphragm.

The further technical scheme is as follows: the first shell is a hollow cylindrical body, a groove is formed in the position, close to the circle center, of one end face of the cylindrical body in an inwards recessed mode, the vibrating diaphragm is located in the groove, the first support comprises a first cylinder and a retaining ring formed by outwards extending the top edge of the first cylinder, the second support is sleeved on the first cylinder, one end of the conducting piece is located between the upper end portion of the second support and the retaining ring, and the magnetic assembly is located in the first cylinder.

The further technical scheme is as follows: the magnetic assembly includes a first magnet and a second magnet disposed on the first magnet.

In order to solve the above technical problem, according to the utility model discloses an on the other hand, provide an earphone, including two earphone units and a connecting piece of connecting two earphone units, the earphone unit includes the shell of being connected with the connecting piece and foretell bone conduction speaker, vibrating diaphragm in the bone conduction speaker is located the one side of contacting with the user in the shell.

The further technical scheme is as follows: the shell comprises a lower shell connected with the connecting piece and a silica gel plate covered on the lower shell, the bone conduction loudspeaker is located in an accommodating space formed between the lower shell and the silica gel plate, and the vibrating diaphragm is tightly attached to the lower surface of the silica gel plate.

Compared with the prior art, the utility model is provided with a vibrating diaphragm on one end face of the conduction shell, the conduction sheet at the lower end part in the conduction shell, the conduction shell and the vibrating diaphragm on the end face of the conduction shell surround and form a containing space for containing the coil and the magnet component, the coil generates an alternating magnetic field after being electrified, the alternating magnetic field changes the magnetic field intensity of a magnetic system consisting of the magnet component and the conduction shell, thereby the conduction sheet and the vibration film vibrate, the end surfaces of the vibration film and the conduction shell contact with the human body to transmit the sound to the human bone, thereby inducing a sound through bone conduction, and the utility model uses a vibrating diaphragm in one end face of the conduction shell to replace the end face of the traditional conduction shell, so that the bone conduction loudspeaker of the utility model can vibrate and conduct through the conduction sheet and the vibrating diaphragm, bass can be transmitted through the vibrating diaphragm when the current is not increased, the conduction efficiency is improved, and meanwhile, the power consumption is reduced.

Drawings

Fig. 1 is a schematic perspective view of a bone conduction speaker according to an embodiment of the present invention.

Fig. 2 is a schematic top view of the bone conduction speaker of fig. 1.

Fig. 3 is a schematic cross-sectional view of the bone conduction speaker of fig. 1.

Fig. 4 is an exploded view of the bone conduction speaker of fig. 1.

Fig. 5 is a schematic structural diagram of an embodiment of the earphone of the present invention.

Fig. 6 is an exploded view of the earphone unit of fig. 5.

Fig. 7 is a schematic cross-sectional view of the earphone unit of fig. 6.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention will be further described with reference to the accompanying drawings and examples.

Referring to fig. 1 to 4, fig. 1 to 4 show a specific embodiment of the bone conduction speaker 10 of the present invention. In the embodiment shown in the drawings, the bone conduction speaker 10 includes a conductive shell 11, a diaphragm 12 disposed on an end surface of the conductive shell 11, and a conductive sheet 13 disposed at an inner lower end portion of the conductive shell 11, the conductive sheet 13, the conductive shell 11, and the diaphragm 12 surround and form an accommodating space 14, the accommodating space 14 accommodates a coil 15 and a magnetic component 16 for generating a magnetic field, and the coil 15 is fixed on an inner surface of the diaphragm 12. Preferably, in this embodiment, the conductive shell 11 may be made of a soft magnetic material such as silicon steel sheet, ferrite, or iron. Based on this design, coil 15 produces alternating magnetic field after the circular telegram, alternating magnetic field makes magnetic component 16 and the magnetic field intensity of the magnetic system that the conduction shell 11 constitutes change, coil 15 receives the effect of ampere force in magnetic field, thereby make coil 15 produce fore-and-aft round trip movement relative magnetic system, because coil 15 is fixed in vibrating diaphragm 12 department, then drive vibrating diaphragm 12 and conduction shell 11 motion, drive the conduction piece 13 vibration that is located interior tip through conduction shell 11 simultaneously, vibrating diaphragm 12 and conduction shell 11 terminal surface and human contact transmit the people's bone with sound, thereby let people's response sound through bone conduction, promptly the utility model discloses bone conduction speaker 10 passes through vibrating diaphragm 12 and both vibration conduction of conduction piece 13, for only the speaker through conduction piece 13 conduction in the prior art, can improve conduction efficiency, still can reduce the consumption simultaneously.

Specifically, in some embodiments, the conductive shell 11 includes a first shell 111, a first support 112 and a second support 113, the diaphragm 12 is located on the first shell 111, the second support 113 is sleeved outside the first support 112, upper ends of the first support 112 and the second support 113 are located in the first shell 111, one end of the conductive sheet 13 is located between the upper ends of the first support 112 and the second support 113, the other end of the conductive sheet is located in the first shell 111, the magnetic component 16 is located on the first support 112, and the coil 15 is located on an inner surface of the diaphragm 12 corresponding to the magnetic component 16. Preferably, in this embodiment, second support 113 and first support 112 interference fit to fixed conduction piece 13, compare tradition and use the point to glue and fix conduction piece 13 with laser electric welding technology, the utility model discloses bone conduction speaker 10 technology is simpler, can reduce the production degree of difficulty, and moulds plastics fixed conduction piece 13 of technology and first casing 111 through the nanometer in this embodiment, makes the utility model discloses a bone conduction speaker 10 can directly regard as the shell with conduction shell 11 when being applied to the earphone, need not to establish a casing at conduction shell 11 overcoat again, and vibrating diaphragm 12 and conduction shell 11's terminal surface can be directly with human contact, both material saving can improve conduction efficiency again.

In this embodiment, the first housing 111 is a hollow cylindrical body, a recess is formed by inwardly recessing an end surface of the cylindrical body near a center of a circle, the diaphragm 12 is located in the recess, the first bracket 112 includes a first cylinder 1121 and a retaining ring 1122 formed by outwardly extending a top edge of the first cylinder 1121, the second bracket 113 is sleeved on the first cylinder 1121, one end of the conductive piece 13 is located between an upper end of the second bracket 113 and the retaining ring 1122, and the magnetic component 16 is located in the first cylinder 1121.

Preferably, the magnetic assembly 16 includes a first magnet 161 and a second magnet 162 disposed on the first magnet 161. understandably, the first magnet 161 and the second magnet 162 can be magnets made of alloy permanent magnetic material or ferrite permanent magnetic material, the alloy permanent magnetic material includes but is not limited to neodymium iron boron, samarium cobalt, alnico, iron chromium cobalt, aluminum iron boron, iron carbon aluminum, and the ferrite permanent magnetic material includes but is not limited to barium ferrite, iron ferrite, manganese ferrite, lithium manganese ferrite. Based on the above design, the utility model discloses in adopt two magnet drives for the electro-acoustic is transformed into mechanical vibration's conversion efficiency and is higher, thereby reduces the consumption.

Referring to fig. 5-7, fig. 5-7 show an embodiment of the earphone 20 of the present invention. In the embodiment shown in the drawings, the earphone 20 comprises two earphone units 21 and a connecting part 22 for connecting the two earphone units 21, the earphone unit 21 comprises a housing connected with the connecting part 22 and the bone conduction speaker 10 of the above embodiment, and the diaphragm 12 of the bone conduction speaker 10 is positioned on the side of the housing which is contacted with the user.

Specifically, the housing includes a lower housing 2111 connected to the connecting member 22 and a silicon plate 2112 covering the lower housing 2111, the bone conduction speaker 10 is located in an accommodating space 23 formed between the lower housing 2111 and the silicon plate 2112, and the diaphragm 12 is tightly attached to the lower surface of the silicon plate 2112. It can be known that, the magnetic field intensity of the magnetic system composed of the first magnet 161, the second magnet 162 and the conduction shell 11 changes after the coil 15 is electrified, the coil 15 is acted by ampere force in the magnetic field, so that the coil 15 generates longitudinal reciprocating motion relative to the magnetic system, because the coil 15 is fixed at the position of the vibrating diaphragm 12, the vibrating diaphragm 12 and the conduction shell 11 are driven to move, meanwhile, the conduction piece 13 located at the inner lower end part is driven to vibrate through the conduction shell 11, the end surfaces of the vibrating diaphragm 12 and the conduction shell 11 are in contact with the human body through the silica gel plate 2112, so that sound is transmitted to the human bone, and sound is induced by people through bone conduction. Based on the above design, the utility model discloses a vibrating diaphragm 12 of bone conduction speaker 10 hugs closely in among earphone 20 silica gel plate 2112 more does benefit to and contacts with the user, the utility model discloses earphone 20 compares with traditional bone conduction earphone, when broadcasting same volume, the utility model discloses the required electric current of earphone 20 is littleer.

To sum up, the utility model discloses a vibrating diaphragm is provided with at a conduction shell terminal surface, the vibration film that is located the tip under the conduction shell, conduction shell and is located the conduction shell terminal surface surrounds and is formed with the accommodation space that is used for accommodating coil and magnet subassembly, the coil produces alternating magnetic field after the circular telegram, alternating magnetic field makes the magnetic field intensity of the magnetic system that magnetic subassembly and conduction shell constitute change, the coil receives the effect of ampere force in the magnetic field, thereby make the coil produce fore-and-aft reciprocating motion relative magnetic system, because the coil is fixed in the vibrating diaphragm department, drive vibrating diaphragm and conduction shell motion, drive the vibration of the conduction piece that is located tip under interior simultaneously through the conduction shell, vibrating diaphragm and conduction shell terminal surface and human body contact transmit the sound to people's bone, thereby let the people respond to the sound through bone conduction, can know, the utility model discloses bone conduction speaker vibrates through both vibration film and conduction piece, and the conduction shell among the bone conduction speaker among the prior art is mostly by stereoplasm material integrated into one piece, and only through the speaker of conduction piece conduction, then the utility model discloses a bone conduction speaker compares traditional bone conduction speaker and can improves conduction efficiency, still can reduce the consumption simultaneously. Just the utility model discloses a fixed conduction piece of bone conduction speaker accessible nanometer injection molding process and first casing make the utility model discloses a bone conduction speaker can directly regard the conduction shell as the shell when being applied to the earphone, need not to establish a casing at the conduction shell overcoat again, and the terminal surface of vibrating diaphragm and conduction shell can be directly and human contact, both material saving can further improve conduction efficiency again.

The foregoing is considered as illustrative of the preferred embodiments of the invention and is not intended to limit the invention in any way. Various equivalent changes and modifications can be made on the basis of the above embodiments by those skilled in the art, and all equivalent changes and modifications within the scope of the claims should fall within the protection scope of the present invention.

Claims (6)

1. A bone conduction speaker, characterized by: the bone conduction speaker includes the conduction shell, locates the vibrating diaphragm of a conduction shell terminal surface and locates the conduction piece of tip in the conduction shell, conduction piece, conduction shell and vibrating diaphragm surround and are formed with an accommodation space, accommodation space has been acceptd and is used for producing coil and the magnetic component in magnetic field, just the coil is fixed in the vibrating diaphragm internal surface.

2. The bone conduction speaker of claim 1, wherein: the conduction shell comprises a first shell, a first support and a second support, the vibration diaphragm is located on the first shell, the second support is sleeved outside the first support, the upper end of the first support and the upper end of the second support are located in the first shell, one end of the conduction piece is located between the upper end of the first support and the upper end of the second support, the other end of the conduction piece is located in the first shell, the magnetic component is located on the first support, and the coil corresponds to the magnetic component and is arranged on the inner surface of the vibration diaphragm.

3. The bone conduction speaker of claim 2, wherein: the first shell is a hollow cylindrical body, a groove is formed in the position, close to the circle center, of one end face of the cylindrical body in an inwards recessed mode, the vibrating diaphragm is located in the groove, the first support comprises a first cylinder and a retaining ring formed by outwards extending the top edge of the first cylinder, the second support is sleeved on the first cylinder, one end of the conducting piece is located between the upper end portion of the second support and the retaining ring, and the magnetic assembly is located in the first cylinder.

4. The bone conduction speaker of claim 2, wherein: the magnetic assembly includes a first magnet and a second magnet disposed on the first magnet.

5. An earphone, characterized by: the earphone comprising two earphone units and a connecting piece connecting the two earphone units, the earphone unit comprising a housing connected to the connecting piece and a bone conduction speaker as claimed in any one of the preceding claims 1-4, the diaphragm of the bone conduction speaker being located on the side of the housing that is in contact with the user.

6. The headset as recited in claim 5, wherein: the shell comprises a lower shell connected with the connecting piece and a silica gel plate covered on the lower shell, the bone conduction loudspeaker is located in an accommodating space formed between the lower shell and the silica gel plate, and the vibrating diaphragm is tightly attached to the lower surface of the silica gel plate.

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