CN215499486U

CN215499486U - Single-drive bone conduction loudspeaker and earphone

Info

Publication number: CN215499486U
Application number: CN202120933629.7U
Authority: CN
Inventors: 温煜; 刘欣; 李虎
Original assignee: Dongguan Edifier Technology Co ltd
Current assignee: Dongguan Edifier Technology Co ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2022-01-11
Anticipated expiration: 2031-04-30

Abstract

The utility model discloses a single-drive bone conduction loudspeaker and an earphone, which comprise a vibration sound production part, wherein the vibration sound production part comprises a loudspeaker drive part and a vibrating diaphragm, and the loudspeaker drive part is arranged on the vibrating diaphragm and deviates from the central position of the vibrating diaphragm, so that the vibration area of the vibrating diaphragm is increased; the loudspeaker driving component comprises an armature sheet, a first armature arm and a second armature arm extend in parallel from the middle to the same direction, a voice coil and an iron core are sleeved on the first armature arm side by side, the voice coil is connected with an electric signal input component through a line, a magnetic circuit is arranged in the iron core, the first armature arm penetrates through the magnetic circuit, the bottom surface of the first armature arm is connected with one end of a connecting rod, the other end of the connecting rod is connected with the vibrating diaphragm, and the armature sheet vibrates up and down due to an alternating magnetic field and drives the connecting rod to push the vibrating diaphragm to vibrate.

Description

Single-drive bone conduction loudspeaker and earphone

Technical Field

The utility model relates to the technical field of bone conduction loudspeakers, in particular to a single-drive bone conduction loudspeaker and an earphone.

Background

Bone conduction is a sound conduction mode, that is, sound is converted into mechanical vibration with different frequencies, and sound waves are transmitted through the skull, the bone labyrinth, the lymph fluid of the inner ear, the spiral organ and the auditory center of a human body.

In general, most of the sound we hear is sound waves conducted through the air, which are perceived by the auditory nerve through the outer middle ear to the inner ear of the cochlea. Air conduction sound waves are transmitted to the inner ear through the outer ear and the middle ear; the bone conduction is to vibrate the skull or temporal bone and directly transmit the bone to the inner ear without passing through the outer ear and the middle ear. Compared with the traditional air conduction mode of generating sound waves through a loudspeaker diaphragm, the bone conduction mode omits a plurality of sound wave transmission steps, can realize clear sound restoration in a noisy environment, and does not influence other people due to the sound waves diffused in the air. The electro-acoustic devices of the bone conduction technology are divided into bone conduction earphone speakers and bone conduction microphones. Among them, the bone conduction speaker technology is used for a telephone transmission, i.e., listening to a sound. The air conduction speaker converts an electric signal into a sound wave (vibration signal) and transmits the sound wave to an auditory nerve. The bone conduction speaker is a sound wave (vibration signal) converted from an electric signal and directly transmitted to the auditory nerve through the bone. The transmission medium of the acoustic wave (vibration signal) is different. Bone conduction microphone technology is used for receiving, i.e. collecting, sound. Air conduction is the transmission of sound waves through the air to the microphone, while bone conduction is the transmission directly through the bone. Headphones manufactured using these bone conduction technologies are called bone conduction headphones, and are also called bone conduction headphones, bone sensing headphones, and bone sensing headphones.

At present, along with the slimming of bone conduction earphones, bone conduction loudspeakers are also required to tend to slimming development, but the current bone conduction loudspeaker body is generally higher in height, complex in structure and large in volume, if the height of the loudspeaker body is reduced, the driving capability of the bone conduction loudspeaker is reduced, the function of the bone conduction loudspeaker is affected, and the slimming development of the bone conduction earphones cannot be adapted.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problems, an object of the present invention is to provide a single-driven bone conduction speaker and an earphone, which are used to simplify the design, reduce the height of a bone conduction speaker body, and improve the driving capability of the bone conduction speaker.

In order to achieve the purpose, the utility model adopts the following technical scheme: a single-drive bone conduction loudspeaker and an earphone comprise a vibration sound production part, wherein the vibration sound production part comprises a loudspeaker drive part and a vibrating diaphragm, and the loudspeaker drive part is arranged on the vibrating diaphragm and deviates from the central position of the vibrating diaphragm, so that the vibration area of the vibrating diaphragm is increased;

the loudspeaker driving component comprises an armature sheet, a first armature arm and a second armature arm extend in parallel from the middle to the same direction, a voice coil and an iron core are sleeved on the first armature arm side by side, the voice coil is connected with an electric signal input component through a line, a magnetic circuit is arranged in the iron core, the first armature arm penetrates through the magnetic circuit, the bottom surface of the first armature arm is connected with one end of a connecting rod, the other end of the connecting rod is connected with the vibrating diaphragm, and the armature sheet vibrates up and down due to an alternating magnetic field and drives the connecting rod to push the vibrating diaphragm to vibrate.

Further, the connecting rod is arranged on one side, far away from the voice coil, of the iron core.

Furthermore, one surface of the armature plate, which is far away from the connecting rod, is connected with the bracket.

Furthermore, the bracket comprises an accommodating groove which is convex upwards, the opening of the accommodating groove faces downwards, and the upper half part of the horn driving part is arranged in the accommodating groove.

Furthermore, the top surface of the containing groove is connected with the electric signal input component.

Furthermore, a slotted hole is formed in one edge of the support close to the accommodating groove, and the voice coil is led out through the slotted hole and then is connected with the electric signal input component through a circuit.

Furthermore, the magnetic circuit comprises magnets respectively arranged on two inner walls of the iron core, which are opposite to each other up and down.

Further, still include the shell, the shell is the open hollow cylinder in one end, the shell cover is established the vibrating diaphragm with week side of support, the bottom center of shell is equipped with the round hole, the round hole inboard is equipped with the dust screen.

Furthermore, an upper support ring is arranged between the bottom surface of the support and the vibrating diaphragm; the vibrating diaphragm is kept away from the one side of going up the support ring with be equipped with the lower support ring between the bottom inboard of shell.

An earphone comprises the single-drive bone conduction loudspeaker.

The utility model has the beneficial effects that: the utility model provides a single-drive bone conduction loudspeaker and an earphone, which comprise a vibration sound production part, wherein the vibration sound production part comprises a loudspeaker drive part and a vibrating diaphragm, and the loudspeaker drive part is arranged on the vibrating diaphragm and deviates from the central position of the vibrating diaphragm, so that the vibration area of the vibrating diaphragm is increased; the loudspeaker driving component comprises an armature sheet, a first armature arm and a second armature arm extend in parallel from the middle to the same direction, a voice coil and an iron core are sleeved on the first armature arm side by side, the voice coil is connected with an electric signal input component through a line, a magnetic circuit is arranged in the iron core, the first armature arm penetrates through the magnetic circuit, the bottom surface of the first armature arm is connected with one end of a connecting rod, the other end of the connecting rod is connected with the vibrating diaphragm, and the armature sheet vibrates up and down due to an alternating magnetic field and drives the connecting rod to push the vibrating diaphragm to vibrate. The central point through the skew vibrating diaphragm of loudspeaker driver part puts the increase of the vibration area who makes the vibrating diaphragm, has reduced bone conduction loudspeaker's height for bone conduction loudspeaker is slim, and the amplitude increases simultaneously, improves loudspeaker driving force.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is an exploded view of a single-drive bone conduction horn according to an embodiment of the present invention;

fig. 2 is an exploded view of a vibration-producing component of a single-drive bone conduction speaker according to an embodiment of the present invention;

fig. 3 is an exploded view of a vibration-producing component of a single-drive bone conduction speaker according to an embodiment of the present invention;

fig. 4 is a schematic diagram of an internal structure of a single-drive bone conduction speaker according to an embodiment of the present invention;

fig. 5 is a schematic overall structure diagram of a single-drive bone conduction speaker according to an embodiment of the present invention.

In the figure: 1. a vibration sound producing component; 2. a horn driving part; 20. an armature plate; 201. a first armature arm; 202. a second armature arm; 21. a voice coil; 22. an iron core; 23. a magnetic circuit; 24. a connecting rod; 25. a magnet; 3. vibrating diaphragm; 4. an electric signal input section; 5. a support; 50. a containing groove; 51. a slot; 6. a housing; 60. a circular hole; 61. a dust screen; 7. an upper support ring; 8. a lower support ring.

Detailed Description

The embodiment of the utility model provides a single-drive bone conduction loudspeaker and an earphone, which are used for simplifying the design, reducing the height of a bone conduction loudspeaker body and improving the driving capability of the bone conduction loudspeaker.

In order to make the objects, features and advantages of the present invention more apparent and understandable, the embodiments of the present invention will be described in detail and completely with reference to the accompanying drawings, and it is to be understood that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

Referring to fig. 1, fig. 1 is a single-drive bone conduction speaker according to an embodiment of the present invention, including a vibration sound generating component 1, where the vibration sound generating component 1 includes a speaker driving component 2 and a diaphragm 3, and the speaker driving component 2 is disposed on the diaphragm 3 and deviates from a center position of the diaphragm 3, so that a vibration area of the diaphragm 3 is increased; the loudspeaker driving component 2 comprises an armature plate 20, the armature plate 20 is provided with a first armature arm 201 and a second armature arm 202 which extend in parallel from the middle to the same direction, the first armature arm 201 is sleeved with a voice coil 21 and an iron core 22 side by side, the voice coil 21 is connected with the electric signal input component 4 in a circuit mode, a magnetic circuit 23 is arranged in the iron core 22, the first armature arm 201 penetrates through the magnetic circuit 23, the bottom surface of the first armature arm 201 is connected with one end of a connecting rod 24, the other end of the connecting rod 24 is connected with the vibrating diaphragm 3, the armature plate 20 vibrates up and down due to an alternating magnetic field, and the connecting rod 24 is driven to push the vibrating diaphragm 3 to vibrate.

Specifically, as shown in fig. 1, different from the prior art, the loudspeaker driving part 2 is disposed on one side of the vibrating diaphragm 3, and deviates from the center position of the vibrating diaphragm 3, the loudspeaker driving part 2 includes an armature plate 20, the armature plate 20 is a U-shaped plate, the armature plate 20 has a first armature arm 201 and a second armature arm 202 extending in parallel from the middle to the same direction, and the volume of the loudspeaker can be reduced by disposing the armature plate 20 in a U-shape. The voice coil 21 and the iron core 22 are sleeved on the first armature arm 201 side by side, the voice coil 21 is connected with the electric signal input component 4 through a circuit, a magnetic circuit 23 is arranged in the iron core 22, the first armature arm 201 of the armature plate 20 penetrates through the magnetic circuit 23, the bottom surface of the first armature arm 201 is connected with one end of a connecting rod 24, the other end of the connecting rod 24 is connected with the vibrating diaphragm 3, and the armature plate 20 vibrates up and down due to the alternating magnetic field and drives the connecting rod 24 to push the vibrating diaphragm 3 to vibrate.

The central point that loudspeaker driver part 2 deviates from vibrating diaphragm 3 puts the increase of the vibration area who makes vibrating diaphragm 3, and under the condition of the height that has reduced bone conduction loudspeaker, the amplitude increases, improves the loudspeaker driving force.

Further, as shown in fig. 1, the link 24 is disposed on a side of the iron core 22 away from the voice coil 21.

Specifically, the connecting rod 24 is disposed on a side of the iron core 22 away from the voice coil 21, that is, as shown in fig. 1, the voice coil 21 and the iron core 22 are close to each other, the connecting rod 24 is disposed on an outer side of the iron core 22, and the connecting rod 24 is connected to a center of the diaphragm 3, so as to increase a vibration area of the diaphragm 3.

Further, as shown in fig. 1 or 4, a face of the armature plate 20 remote from the connecting rod 24 is connected to the bracket 5.

In particular, the side of the armature plate 20 remote from the connecting rod 24, i.e. the side of the second armature arm 202 remote from the first armature arm 201, is connected to the bracket 5.

Further, as shown in fig. 1, the bracket 5 is circular and coaxial with the diaphragm 3, the bracket 5 includes an upward-protruding accommodating groove 50, an opening of the accommodating groove 50 faces downward, and the upper half portion of the horn driving part 2 is disposed in the accommodating groove 50.

Specifically, the support 5 and the diaphragm 3 are coaxial and circular, the support 5 includes an upward convex accommodating groove 50, an opening of the accommodating groove 50 faces downward, and the upper half portion of the horn driving part 2 is disposed in the accommodating groove 50.

Further, as shown in fig. 4, the top surface of the receiving groove 50 is connected to the electrical signal input part 4.

Specifically, the electrical signal input component 4, that is, the PCB, is disposed on the top surface of the accommodating groove 50, the volume of the electrical signal input component 4 is reduced, the circuit above the electrical signal input component is correspondingly set to be finer, and the circuit connection is realized when the volume of the horn is reduced.

Further, as shown in fig. 3, a slot 51 is formed on an edge of the bracket 5 close to the accommodating slot 50, and the voice coil 21 is led out through the slot 51 and then is connected to the electrical signal input component 4.

Specifically, for the sake of simple connection, a slot 51 is formed on one edge of the bracket 5 close to the accommodating slot 50, the shape of the slot 51 is not limited, and may be circular, semicircular, prismatic, and the like, and the voice coil 21 is led out through the slot 51 and is connected to the electrical signal input part 4.

Specifically, as shown in fig. 2, further, as shown in fig. 2, the magnetic circuit 23 includes magnets 25 respectively disposed on two inner walls of the iron core 22, which are opposite to each other up and down.

Specifically, the illustrated magnetic circuit 23 is formed by two magnets 25, and the two magnets 25 are respectively provided on two inner walls of the core 22 facing each other in the up-down direction.

Further, as shown in fig. 5, the portable electronic device further comprises a housing 6, wherein the housing 6 is a hollow cylinder with one open end, the housing 6 is sleeved on the vibrating diaphragm 3 and the periphery of the support 4, a round hole 60 is arranged at the center of the bottom of the housing 6, and a dust screen 61 is arranged on the inner side of the round hole 60.

Specifically, the shell 6 is used for protecting the internal structure of the bone conduction speaker, a round hole 60 is formed in the center of the bottom of the shell 6, and a dust screen 61 is arranged on the inner side of the round hole 60. The dust screen 61 is used to isolate dust.

Further, as shown in fig. 4, an upper support ring 7 is disposed between the bottom surface of the support 5 and the diaphragm 3; and a lower support ring 8 is arranged between one surface of the diaphragm 3 far away from the upper support ring 7 and the inner side of the bottom of the shell 6.

Specifically, in order to stabilize the structure of the loudspeaker, an upper support ring 7 is arranged between the bottom surface of the support 5 and the diaphragm 3; a lower support ring 8 is arranged between one surface of the diaphragm 3 far away from the upper support ring 7 and the inner side of the bottom of the shell 6.

An earphone comprises the single-drive bone conduction loudspeaker. The thin loudspeaker with good driving force can be used on other electronic products, such as thin mobile phones, thin tablet computers and the like.

In summary, the single-drive bone conduction speaker and the earphone provided by the utility model comprise a vibration sound production component, wherein the vibration sound production component comprises a speaker drive component and a vibrating diaphragm, and the speaker drive component is arranged on the vibrating diaphragm and deviates from the central position of the vibrating diaphragm, so that the vibration area of the vibrating diaphragm is increased; the loudspeaker driving component comprises an armature sheet, a first armature arm and a second armature arm extend in parallel from the middle to the same direction, a voice coil and an iron core are sleeved on the first armature arm side by side, the voice coil is connected with an electric signal input component through a line, a magnetic circuit is arranged in the iron core, the first armature arm penetrates through the magnetic circuit, the bottom surface of the first armature arm is connected with one end of a connecting rod, the other end of the connecting rod is connected with the vibrating diaphragm, and the armature sheet vibrates up and down due to an alternating magnetic field and drives the connecting rod to push the vibrating diaphragm to vibrate. The central point through the skew vibrating diaphragm of loudspeaker driver part puts the increase of the vibration area who makes the vibrating diaphragm, has reduced bone conduction loudspeaker's height for bone conduction loudspeaker is slim, and the amplitude increases simultaneously, improves loudspeaker driving force.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The single-drive bone conduction loudspeaker is characterized by comprising a vibration sounding component (1), wherein the vibration sounding component (1) comprises a loudspeaker driving component (2) and a vibrating diaphragm (3), and the loudspeaker driving component (2) is arranged on the vibrating diaphragm (3) and deviates from the central position of the vibrating diaphragm (3), so that the vibration area of the vibrating diaphragm (3) is increased;

the loudspeaker driving component (2) comprises an armature sheet (20), the armature sheet (20) is provided with a first armature arm (201) and a second armature arm (202) which extend in parallel from the middle to the same direction, the first armature arm (201) is sleeved with a voice coil (21) and an iron core (22) side by side, the voice coil (21) is connected with an electric signal input component (4) in a line mode, a magnetic circuit (23) is arranged in the iron core (22), the first armature arm (201) penetrates through the magnetic circuit (23), the bottom surface of the first armature arm (201) is connected with one end of a connecting rod (24), the other end of the connecting rod (24) is connected with the vibrating diaphragm (3), and the armature sheet (20) vibrates up and down due to an alternating magnetic field and drives the connecting rod (24) to push the vibrating diaphragm (3) to vibrate.

2. The single-drive bone conduction horn of claim 1, wherein the link (24) is provided on a side of the iron core (22) remote from the voice coil (21).

3. The single-drive bone conduction horn of claim 1, wherein a face of the armature plate (20) remote from the connecting rod (24) is connected to a bracket (5).

4. The single-driven bone conduction horn according to claim 3, wherein the bracket (5) comprises an upwardly convex receiving groove (50), the receiving groove (50) has a downward opening, and the upper half of the horn-driving member (2) is disposed in the receiving groove (50).

5. The single-driven bone conduction horn according to claim 4, wherein the top surface of the receiving groove (50) is connected to the electrical signal input means (4).

6. The single-driven bone conduction speaker as claimed in claim 4, wherein a slot (51) is formed on an edge of the bracket (5) near the receiving slot (50), and the voice coil (21) is led out through the slot (51) and then connected to the electrical signal input unit (4) by wire.

7. The single-driven bone conduction horn according to claim 1, wherein the magnetic circuit (23) comprises magnets (25) respectively provided on two inner walls of the iron core (22) which are opposite up and down.

8. The single-drive bone conduction loudspeaker according to claim 3, further comprising a housing (6), wherein the housing (6) is a hollow cylinder with an open end, the housing (6) is sleeved on the periphery of the diaphragm (3) and the support (5), a circular hole (60) is formed in the center of the bottom of the housing (6), and a dust screen (61) is arranged on the inner side of the circular hole (60).

9. The single-drive bone conduction loudspeaker according to claim 8, wherein an upper support ring (7) is provided between the bottom surface of the support (5) and the diaphragm (3); the vibrating diaphragm (3) is far away from one surface of the upper supporting ring (7) and a lower supporting ring (8) is arranged between the inner sides of the bottom of the shell (6).

10. An earphone, comprising a single-drive bone conduction speaker as claimed in any one of claims 1-9.