CN214591966U

CN214591966U - Dual-drive bone conduction loudspeaker and earphone

Info

Publication number: CN214591966U
Application number: CN202120886220.4U
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: 2021-04-27
Filing date: 2021-04-27
Publication date: 2021-11-02
Anticipated expiration: 2031-04-27

Abstract

The utility model discloses a dual-drive bone conduction loudspeaker and earphone, which comprises a vibration sounding component, wherein the vibration sounding component comprises a first magnetic circuit component and a second magnetic circuit component, and the first magnetic circuit component and the second magnetic circuit component are respectively and symmetrically arranged at two sides of the central position of a vibrating diaphragm; the armature plate comprises a first armature arm and a second armature arm which are arranged in parallel, the first armature arm and the second armature arm are fixedly connected through a transition arm, and the first armature arm penetrates through the magnetic circuits of the first magnetic circuit component and the second magnetic circuit component; the bone conduction loudspeaker is characterized in that a connecting rod is arranged between the first magnetic circuit component and the second magnetic circuit component, one end of the connecting rod is connected with the bottom of the first armature arm, the other end of the connecting rod is connected with the central position of the vibrating diaphragm, the armature sheet vibrates up and down due to the alternating magnetic field and drives the connecting rod to push the vibrating diaphragm to vibrate, and the driving force of the bone conduction loudspeaker is increased through the double-drive structural design.

Description

Dual-drive bone conduction loudspeaker and earphone

Technical Field

The utility model relates to a bone conduction loudspeaker technical field especially relates to a dual drive bone conduction loudspeaker and 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 also tend to the slimming development, most of the current bone conduction loudspeakers are single-drive, and the driving capability of the conventional single-drive type bone conduction loudspeakers is insufficient, so that the function of the bone conduction loudspeakers is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the utility model is to provide a dual drive bone conduction loudspeaker and earphone for simplify the design, compare traditional single drive type bone conduction loudspeaker and have bigger driving force.

To achieve the purpose, the utility model adopts the following technical proposal: a dual-drive bone conduction loudspeaker comprises a vibration sounding component, wherein the vibration sounding component comprises a first magnetic circuit component and a second magnetic circuit component, and the first magnetic circuit component and the second magnetic circuit component are respectively and symmetrically arranged on two sides of the central position of a vibrating diaphragm;

the armature plate comprises a first armature arm and a second armature arm which are arranged in parallel, the first armature arm and the second armature arm are fixedly connected through a transition arm, and the first armature arm penetrates through the magnetic circuits of the first magnetic circuit component and the second magnetic circuit component; a connecting rod is arranged between the first magnetic circuit component and the second magnetic circuit component, one end of the connecting rod is connected with the bottom of the first armature arm, the other end of the connecting rod is connected with the central position of the vibrating diaphragm, and the armature plate vibrates up and down due to the alternating magnetic field and drives the connecting rod to push the vibrating diaphragm to vibrate.

Further, the first magnetic circuit member and the second magnetic circuit member are juxtaposed on the first armature arm, the first magnetic circuit member being adjacent to the transition arm.

Furthermore, the first magnetic circuit part comprises a first voice coil and a first iron core which are sleeved on the first armature arm, the upper inner wall and the lower inner wall of the first iron core are respectively provided with a first magnet, and the first armature arm penetrates through the two first magnets and extends towards the direction of the second magnetic circuit part.

Furthermore, the second magnetic circuit part comprises a second voice coil and a second iron core which are sleeved on the first armature arm, the upper inner wall and the lower inner wall of the second iron core are respectively provided with a second magnet, and the first armature arm penetrates through the two second magnets and is exposed outwards.

Furthermore, one surface of the second armature arm, which is far away from the first armature arm, is connected with an electric signal input component.

Furthermore, two edges of the electrical signal input component are respectively and symmetrically provided with a slot, and the two slots are respectively positioned above the first magnetic circuit component and the second magnetic circuit component.

Furthermore, the first voice coil and the second voice coil are respectively led out through the two slotted holes and then are connected with the electric signal input component through a circuit.

Further, still include the shell, the shell is the open hollow cylinder in one end, the shell cover is established the vibrating diaphragm with all sides of signal of telecommunication input part, the bottom center of shell is equipped with the round hole, the round hole inboard is equipped with the dust screen.

Furthermore, an upper supporting ring is arranged between the bottom surface of the electric signal input part 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 dual-drive bone conduction loudspeaker.

The utility model has the advantages that: the embodiment of the utility model provides a dual drive bone conduction loudspeaker and earphone, including vibration sound production part, vibration sound production part includes first magnetic circuit part and second magnetic circuit part, first magnetic circuit part with the second magnetic circuit part is respectively symmetrical to be located the both sides of the central point of vibrating diaphragm position; the armature plate comprises a first armature arm and a second armature arm which are arranged in parallel, the first armature arm and the second armature arm are fixedly connected through a transition arm, and the first armature arm penetrates through the magnetic circuits of the first magnetic circuit component and the second magnetic circuit component; the double-drive type balance armature bone conduction loudspeaker structure is characterized in that a connecting rod is arranged between the first magnetic circuit component and the second magnetic circuit component, one end of the connecting rod is connected with the bottom of the first armature arm, the other end of the connecting rod is connected with the central position of the vibrating diaphragm, the armature sheet vibrates up and down due to the alternating magnetic field and drives the connecting rod to push the vibrating diaphragm to vibrate, and through the double-drive structural design, compared with a traditional single-drive bone conduction loudspeaker, the double-drive type balance armature bone conduction loudspeaker structure has larger driving capacity.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, 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 the drawings without inventive exercise.

Fig. 1 is an exploded view of a dual drive bone conduction speaker according to an embodiment of the present invention;

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

fig. 3 is a schematic structural view of a vibration sound-producing component of a dual-drive bone conduction speaker according to an embodiment of the present invention;

fig. 4 is a partial schematic view of a dual-drive bone conduction speaker according to an embodiment of the present invention;

fig. 5 is a schematic diagram of an internal structure of a double-drive bone conduction speaker according to an embodiment of the present invention, with the shell removed;

fig. 6 is a schematic view of an overall structure of a dual-drive bone conduction speaker according to an embodiment of the present invention.

In the figure: 1. a vibration sound producing component; 2. a first magnetic circuit member; 21. a first voice coil; 22. a first iron core; 23. a first magnet; 3. a second magnetic circuit member; 31. a second voice coil; 32. a second iron core; 33. a second magnet; 4. vibrating diaphragm; 5. an armature plate; 501. a first armature arm; 502. a second armature arm; 503. a transition arm; 6. a connecting rod; 7. an electric signal input section; 70. a slot; 8. a housing; 80. a circular hole; 81. a dust screen; 9. an upper support ring; 10. a lower support ring.

Detailed Description

An embodiment of the utility model provides a dual drive bone conduction loudspeaker and earphone for simplify the design, compare traditional single drive type bone conduction loudspeaker and have bigger driving force.

In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is an exploded view of a dual-drive bone conduction speaker according to an embodiment of the present invention, which includes a vibration sound-generating component 1, where the vibration sound-generating component 1 includes a first magnetic circuit component 2 and a second magnetic circuit component 3, and the first magnetic circuit component 2 and the second magnetic circuit component 3 are respectively symmetrically disposed at two sides of a center position of a vibrating diaphragm 4;

an armature plate 5, wherein the armature plate 5 comprises a first armature arm 501 and a second armature arm 502 which are arranged in parallel, the first armature arm 501 and the second armature arm 502 are fixedly connected through a transition arm 503, and the first armature arm 501 passes through a magnetic circuit between the first magnetic circuit part 2 and the second magnetic circuit part 3; a connecting rod 6 is arranged between the first magnetic circuit part 2 and the second magnetic circuit part 3, one end of the connecting rod 6 is connected with the bottom of the first armature arm 501, the other end of the connecting rod 6 is connected with the center of the vibrating diaphragm 4, and the armature plate 5 vibrates up and down due to the alternating magnetic field and drives the connecting rod 6 to push the vibrating diaphragm 4 to vibrate.

Specifically, the central position of vibrating diaphragm 4 is connected with connecting rod 6, and armature plate 5 passes between the magnetic circuit of first magnetic circuit part 2 and second magnetic circuit part 3, and two magnetic circuit drive armature plates 5 vibrate from top to bottom, produce balanced drive power, compare traditional single drive type bone conduction loudspeaker and have bigger driving force.

Further, as shown in fig. 3, the first magnetic circuit member 2 and the second magnetic circuit member 3 are juxtaposed on the first armature arm 501, and the first magnetic circuit member 2 is adjacent to the transition arm 503.

Specifically, the first magnetic path member 2 is close to the transition arm 503, and the second magnetic path member 3 and the first magnetic path member 2 are symmetrically arranged adjacent to each other.

Further, as shown in fig. 2, the first magnetic circuit component 2 includes a first voice coil 21 and a first iron core 22 sleeved on the first armature arm 501, the upper inner wall and the lower inner wall of the first iron core 22 are respectively provided with a first magnet 23, and the first armature arm 501 passes through between the two first magnets 23 and extends towards the second magnetic circuit component 3.

Specifically, the first magnetic circuit component 2 is composed of a first voice coil 21 and a first iron core 22, the upper and lower inner walls of the first iron core 22 are respectively provided with a first magnet 23, and the first armature arm 501 passes through the first voice coil 21 and the space between the two first magnets 23 and extends to the direction of the second magnetic circuit component 3.

Further, as shown in fig. 2, the second magnetic circuit component 3 includes a second voice coil 31 and a second iron core 32 sleeved on the first armature arm 501, the second iron core 32 is provided with a second magnet 33 on the upper inner wall and the lower inner wall, respectively, and the first armature arm 501 passes through between the two second magnets 33 and is exposed outwards.

Specifically, the second magnetic circuit component 3 and the first magnetic circuit component 2 are arranged side by side, are also sleeved on the first armature arm 501, and are composed of the second voice coil 31 and the second iron core 32, wherein the upper and lower inner walls of the second iron core 32 are respectively provided with the second magnet 33, and the first armature arm 501 passes through the second magnetic circuit component 3 after passing through the first magnetic circuit component 2, that is, passes through the two second magnets 33 and the voice coil 31.

Further, as shown in fig. 1, a face of the second armature arm 502 remote from the first armature arm 501 is connected to the electric signal input part 7.

Specifically, a surface of the second armature arm 502 remote from the first armature arm 501 is connected to an electrical signal input unit 7, and the electrical signal input unit 7 is a PCB.

Further, as shown in fig. 4, two slot holes 70 are symmetrically formed along two edges of the electrical signal input part 7, and the two slot holes 70 are respectively located above the first magnetic circuit part 2 and the second magnetic circuit part 3.

Specifically, the slots 70 of the electric signal input member 7 are symmetrically arranged along the edge for electrically connecting the wire with the first magnetic circuit member 2 and the second magnetic circuit member 3.

Further, as shown in fig. 4, the first voice coil 21 and the second voice coil 31 are led out through the two slots 70 and are connected to the electrical signal input unit 7.

Specifically, the wires of the first voice coil 21 and the second voice coil 31 are led out through the two slots 70, and then connected to the electrical signal input unit 7, i.e., the circuit on the PCB.

Further, as shown in fig. 6, the portable electronic device further comprises a housing 8, wherein the housing 8 is a hollow cylinder with an open end, the housing 8 is sleeved on the vibrating diaphragm 4 and the periphery of the electrical signal input component 7, a round hole 80 is formed in the center of the bottom of the housing 8, and a dust screen 81 is arranged on the inner side of the round hole 80.

Specifically, loudspeaker still include that shell 8 is used for protecting loudspeaker inside, shell 8 is the open hollow cylinder in one end, 8 covers of shell are established vibrating diaphragm 4 with the week side of signal of telecommunication input part 7, the bottom center of shell 8 is equipped with round hole 80, round hole 80 inboard is equipped with dust screen 81, and dust screen 81 is used for keeping apart the dust.

Further, as shown in fig. 5, an upper support ring 9 is disposed between the bottom surface of the electrical signal input part 7 and the diaphragm 4; and a lower support ring 10 is arranged between one surface of the diaphragm 4 far away from the upper support ring 9 and the inner side of the bottom of the shell 8.

Specifically, in order to stabilize the structure of the loudspeaker, an upper support ring 9 is arranged between the bottom surface of the electrical signal input part 7 and the diaphragm 4; and a lower support ring 10 is arranged between one surface of the diaphragm 4 far away from the upper support ring 9 and the inner side of the bottom of the shell 8.

An earphone comprises the dual-drive bone conduction loudspeaker, and the loudspeaker can also be used on other electronic products such as mobile phones, tablet computers and the like.

To sum up, the embodiment of the present invention provides a dual-drive bone conduction speaker and earphone, including a vibration sound-producing component, where the vibration sound-producing component includes a first magnetic circuit component and a second magnetic circuit component, and the first magnetic circuit component and the second magnetic circuit component are respectively symmetrically disposed at two sides of the center position of a vibrating diaphragm; the armature plate comprises a first armature arm and a second armature arm which are arranged in parallel, the first armature arm and the second armature arm are fixedly connected through a transition arm, and the first armature arm penetrates through the magnetic circuits of the first magnetic circuit component and the second magnetic circuit component; the double-drive type balance armature bone conduction loudspeaker structure is characterized in that a connecting rod is arranged between the first magnetic circuit component and the second magnetic circuit component, one end of the connecting rod is connected with the bottom of the first armature arm, the other end of the connecting rod is connected with the central position of the vibrating diaphragm, the armature sheet vibrates up and down due to the alternating magnetic field and drives the connecting rod to push the vibrating diaphragm to vibrate, and through the double-drive structural design, compared with a traditional single-drive bone conduction loudspeaker, the double-drive type balance armature bone conduction loudspeaker structure has larger driving capacity.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The dual-drive bone conduction loudspeaker is characterized by comprising a vibration sounding component (1), wherein the vibration sounding component (1) comprises a first magnetic circuit component (2) and a second magnetic circuit component (3), and the first magnetic circuit component (2) and the second magnetic circuit component (3) are respectively and symmetrically arranged on two sides of the central position of a vibrating diaphragm (4);

the armature plate (5), the armature plate (5) includes the first armature arm (501) and the second armature arm (502) that are set up in parallel, the said first armature arm (501) and second armature arm (502) pass the transition arm (503) to connect fixedly, the said first armature arm (501) passes through between the magnetic circuit of the said first magnetic circuit part (2) and said second magnetic circuit part (3); a connecting rod (6) is arranged between the first magnetic circuit component (2) and the second magnetic circuit component (3), one end of the connecting rod (6) is connected with the bottom of the first armature arm (501), the other end of the connecting rod (6) is connected with the center of the vibrating diaphragm (4), and the armature plate (5) vibrates up and down due to the alternating magnetic field and drives the connecting rod (6) to push the vibrating diaphragm (4) to vibrate.

2. The dual-drive bone conduction horn according to claim 1, wherein the first magnetic circuit member (2) and the second magnetic circuit member (3) are disposed side-by-side on the first armature arm (501), the first magnetic circuit member (2) being proximate to the transition arm (503).

3. The dual-drive bone conduction speaker according to claim 1, wherein the first magnetic circuit member (2) includes a first voice coil (21) and a first iron core (22) fitted over the first armature arm (501), the first iron core (22) has a first magnet (23) disposed on an upper inner wall and a lower inner wall thereof, and the first armature arm (501) passes through the two first magnets (23) and extends in the direction of the second magnetic circuit member (3).

4. The dual-drive bone conduction speaker according to claim 3, wherein the second magnetic circuit member (3) includes a second voice coil (31) and a second iron core (32) fitted over the first armature arm (501), the second iron core (32) has a second magnet (33) respectively disposed on an upper inner wall and a lower inner wall, and the first armature arm (501) passes through between the two second magnets (33) and is exposed outward.

5. The dual-drive bone conduction horn of claim 4, wherein a face of the second armature arm (502) distal from the first armature arm (501) is connected to an electrical signal input means (7).

6. The dual-drive bone conduction speaker according to claim 5, wherein two edges of the electrical signal input unit (7) are symmetrically provided with a slot (70), and the two slots (70) are respectively located above the first magnetic circuit unit (2) and the second magnetic circuit unit (3).

7. The dual-drive bone conduction speaker according to claim 6, wherein the first voice coil (21) and the second voice coil (31) are respectively led out through the two slots (70) and then are connected to the electrical signal input unit (7) by a circuit.

8. The dual-drive bone conduction loudspeaker according to claim 5, further comprising a housing (8), wherein the housing (8) is a hollow cylinder with an open end, the housing (8) is sleeved on the periphery of the vibrating diaphragm (4) and the electrical signal input component (7), a circular hole (80) is formed in the center of the bottom of the housing (8), and a dust screen (81) is arranged on the inner side of the circular hole (80).

9. The dual-drive bone conduction speaker according to claim 8, wherein an upper support ring (9) is provided between the bottom surface of the electrical signal input means (7) and the diaphragm (4); the vibrating diaphragm (4) is far away from one surface of the upper supporting ring (9) and a lower supporting ring (10) is arranged between the inner sides of the bottom of the shell (8).

10. An earphone, comprising the dual-drive bone conduction speaker according to any one of claims 1-9.