CN216528003U

CN216528003U - Active noise reduction device and earphone

Info

Publication number: CN216528003U
Application number: CN202121762615.XU
Authority: CN
Inventors: 赵保华
Original assignee: Shenzhen Xinhuamei Electronic Co ltd
Current assignee: Shenzhen Xinhuamei Electronic Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-05-13
Anticipated expiration: 2031-07-30

Abstract

The utility model discloses an active noise reduction device and an earphone, and relates to the technical field of Bluetooth earphone equipment, wherein the Bluetooth technology is a global standard for opening wireless data and voice communication, is a special short-range wireless technology connection for establishing a communication environment for fixed and mobile equipment based on short-range wireless connection with low cost, and comprises an earphone body, wherein the earphone body comprises a head band; according to the active noise reduction device, the first noise reduction mechanism is arranged, and shields the sounder by forming the air curtain, so that the external noise is shielded, and the interference of noise sound waves is reduced, and the purpose of active noise reduction is achieved; through setting up the second and making an uproar the mechanism of making an uproar, offset the noise through opposite phase place, the same sound wave of amplitude, through setting up the guard ring for protect the sounder, reduce hurting falling to bumping, through setting up sound insulation circle, sound insulation circle is used for reducing the gap between sounder and the ear, noise abatement's interference.

Description

Active noise reduction device and earphone

Technical Field

The utility model relates to the technical field of Bluetooth headset equipment, in particular to an active noise reduction device and a headset.

Background

Bluetooth is a special short-range wireless technology connection for establishing a communication environment for fixed and mobile devices based on a low-cost short-range wireless connection, and is a radio technology supporting short-range communication of devices, which can perform wireless information exchange among a plurality of devices including mobile phones, PDAs, wireless headsets, notebook computers, related peripherals, and the like, and the headsets are a pair of conversion units which receive electric signals transmitted from a media player or a receiver.

The active noise reduction mode of the existing earphone is single when the earphone is used, the noise reduction effect is poor, meanwhile, earphone parts are fragile, the existing earphone is poor in protection effect, and the earphone is easy to damage after falling and colliding when the earphone is used, so that an active noise reduction device and the earphone need to be provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an active noise reduction device and an earphone, which have the advantages of good protection effect and good noise reduction effect and solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: an active noise reduction device comprises a first noise reduction device and a second noise reduction device, wherein the first noise reduction device comprises a shell, a mini fan is fixedly installed in an inner cavity of the shell, an exhaust mechanism is communicated with the bottom of the inner cavity of the shell, and the top of the exhaust mechanism is communicated with an exhaust end of the mini fan;

exhaust mechanism includes first body, the top of first body and the exhaust end intercommunication of mini fan, the bottom equidistance intercommunication of first body has the tubule, the top intercommunication of tubule has the second body, the outside that the casing was run through and extended to the casing in the top of second body, the exhaust groove has been seted up to the bottom of second body.

The air inlet end of the mini fan is communicated with a third pipe body, the top of the third pipe body penetrates through the shell and is communicated with the outside of the shell, and an air inlet groove is formed in the top of the third pipe body;

the second noise reduction device comprises a hollow groove, a microphone, a control circuit and a loudspeaker are fixedly installed in the inner cavity of the hollow groove respectively, and the output end of the control circuit is electrically connected with the input ends of the microphone and the loudspeaker respectively; the top fixed mounting of hollow groove inner chamber has the battery, the output of battery respectively with microphone, control circuit and speaker electric connection.

The utility model provides an earphone, falls device and earphone organism including the initiative, the earphone organism is the headphone structure, the earphone organism includes the bandeau, the equal fixed mounting in both sides of bandeau bottom has hollow core plate, the inboard bottom of hollow core plate articulates there is vocal portion, the first top of falling the device fixed mounting of falling and keeping away from vocal portion one side in hollow core plate, hollow groove sets up the inner chamber at hollow core plate, the one side of the device of falling the second falls and the outside intercommunication of hollow core plate, the outside of hollow core plate just is located the second and falls the device of falling and the junction of hollow core plate bonds and has the foam-rubber cushion.

Preferably, the upper end and the lower end of one side of the hollow plate are respectively provided with a first sound inlet hole and a second sound inlet hole, and the first sound inlet hole and the second sound inlet hole are respectively arranged corresponding to the microphone and the loudspeaker.

Preferably, the top outside the hollow plate is bonded with a rubber seat, and the shell is embedded in the inner cavity of the rubber seat.

Preferably, the upper end and the lower end of the rubber seat are both bonded with fixing blocks, and the fixing blocks are bolted with the shell through screws.

Preferably, the sounding part comprises a sounder, the outer side of the sounder is hinged with the inner side of the hollow plate, a protective ring is sleeved on the surface of the sounder, and a sound insulation ring is bolted on the inner side of the sounder.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the active noise reduction device, the first noise reduction mechanism is arranged, and shields the sounder by forming the air curtain, so that the external noise is shielded, and the interference of noise sound waves is reduced, and the purpose of active noise reduction is achieved;

2. according to the utility model, the second noise reduction mechanism is arranged, noise is counteracted through sound waves with opposite phases and same amplitude, the protection ring is arranged and used for protecting the sounder and reducing damage caused by falling collision, and the sound insulation ring is arranged and used for reducing a gap between the sounder and ears and reducing noise interference.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is an enlarged view of a portion of the area A in FIG. 2 according to the present invention;

FIG. 4 is a partial front sectional view of the hollow plate of the present invention;

FIG. 5 is a side sectional view of the housing of the present invention;

FIG. 6 is an enlarged view of a portion of the region B in FIG. 2 according to the present invention.

In the figure: 1. an earphone body; 2. a headband; 3. a hollow slab; 4. a sound emitting portion; 5. a first noise reducing device; 6. a second noise reducing device; 7. a sponge cushion; 8. a housing; 9. a mini fan; 10. an exhaust mechanism; 11. a first pipe body; 12. a thin tube; 13. a second tube body; 14. a third tube; 15. a hollow groove; 16. a microphone; 17. a control circuit; 18. a speaker; 19. a first sound inlet hole; 20. a second sound inlet hole; 21. A storage battery; 22. a rubber seat; 23. a fixed block; 24. a sound generator; 25. a guard ring; 26. and a sound insulation ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments 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.

Referring to fig. 1-6, the present invention provides a technical solution: an earphone comprises an earphone body 1, wherein the earphone body 1 comprises a head band 2, hollow plates 3 are fixedly arranged on two sides of the bottom of the head band 2, and the bottom of the inner side of each hollow plate 3 is hinged with a sound-emitting part 4;

the sounding part 4 comprises a sounder 24, the outer side of the sounder 24 is hinged with the inner side of the hollow plate 3, a protective ring 25 is sleeved on the surface of the sounder 24, a sound insulation ring 26 is bolted on the inner side of the sounder 24, the protective ring 25 is arranged and used for protecting the sounder 24 and reducing damage caused by falling collision, and the sound insulation ring 26 is arranged and used for reducing gaps between the sounder 24 and ears and reducing noise interference.

Referring to fig. 1-6, the present invention further provides a technical solution: an active noise reduction device comprises a first noise reduction device 5 and a second noise reduction device 6, wherein the first noise reduction device 5 comprises a shell 8, a mini fan 9 is fixedly installed in an inner cavity of the shell 8, the bottom of the inner cavity of the shell 8 is communicated with an exhaust mechanism 10, and the top of the exhaust mechanism 10 is communicated with an exhaust end of the mini fan 9; the exhaust mechanism 10 comprises a first pipe body 11, the top of the first pipe body 11 is communicated with the exhaust end of the mini fan 9, the bottom of the first pipe body 11 is communicated with thin pipes 12 at equal intervals, the top of the thin pipes 12 is communicated with a second pipe body 13, the top of the second pipe body 13 penetrates through the shell 8 and extends to the outside of the shell 8, and the bottom of the second pipe body 13 is provided with an exhaust groove; the air inlet end of the mini fan 9 is communicated with a third pipe body 14, the top of the third pipe body 14 penetrates through the shell 8 and is communicated with the outside of the shell 8, and an air inlet groove is formed in the top of the third pipe body 14;

by starting the mini fan 9, the mini fan 9 extracts outside air into the first pipe body 11, the air in the first pipe body 11 uniformly enters the second pipe body 13 through the thin pipe 12 and is discharged through the air discharge groove at the bottom of the second pipe body 13 to form an air curtain, and the sound wave of outside noise is interfered, so that the purpose of noise reduction is achieved;

a second noise reduction device 6 is fixedly installed in the inner cavity of the hollow plate 3, one side of the second noise reduction device 6 is communicated with the outside of the hollow plate 3, and a sponge pad 7 is bonded on the outer side of the hollow plate 3 and at the joint of the second noise reduction device 6 and the hollow plate 3;

the second noise reduction device 6 comprises a hollow groove 15, the hollow groove 15 is arranged in the inner cavity of the hollow plate 3, a microphone 16, a control circuit 17 and a loudspeaker 18 are respectively and fixedly arranged in the inner cavity of the hollow groove 15, and the output end of the control circuit 17 is respectively and electrically connected with the input ends of the microphone 16 and the loudspeaker 18;

the upper end and the lower end of one side of the hollow plate 3 are respectively provided with a first sound inlet hole 19 and a second sound inlet hole 20, and the first sound inlet hole 19 and the second sound inlet hole 20 are respectively arranged corresponding to the microphone 16 and the loudspeaker 18;

the top of the inner cavity of the hollow groove 15 is fixedly provided with a storage battery 21, and the output end of the storage battery 21 is respectively and electrically connected with the microphone 16, the control circuit 17 and the loudspeaker 18; by arranging the storage battery 21, the storage battery 21 is used for supplying power to electric appliances in the device;

the top of the outer side of the hollow plate 3 is bonded with a rubber seat 22, and the shell 8 is embedded in the inner cavity of the rubber seat 22; the upper end and the lower end of the rubber seat 22 are both bonded with fixing blocks 23, the fixing blocks 23 are bolted with the shell 8 through screws, the rubber seat 22 and the fixing blocks 23 are arranged to fix the shell 8, and meanwhile, the rubber seat 22 can reduce vibration generated when the mini fan 9 operates and reduce noise;

the low-frequency noise in the environment which can be heard by ears is detected by a microphone 16 arranged in the hollow plate 3, then a noise signal is transmitted to a control circuit 17, the control circuit 17 carries out real-time operation, and sound waves with opposite phases and the same amplitude with the noise are emitted by a loudspeaker 18 to offset the noise, so the noise disappears and cannot be heard;

through setting up foam-rubber cushion 7, foam-rubber cushion 7 is used for sheltering from first sound hole 19 and second sound hole 20 of admitting sound, prevents that the dust from entering into hollow plate 3 in, the sponge has good syllable-dividing effect simultaneously, improves noise reduction, prevents that the noise from entering into the hollow plate 3 through first sound hole 19 and second sound hole 20 and forming the echo.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An active noise reduction device comprising a first noise reduction device (5) and a second noise reduction device (6), characterized in that: the first noise reduction device (5) comprises a shell (8), a mini fan (9) is fixedly installed in an inner cavity of the shell (8), an exhaust mechanism (10) is communicated with the bottom of the inner cavity of the shell (8), and the top of the exhaust mechanism (10) is communicated with an exhaust end of the mini fan (9);

the exhaust mechanism (10) comprises a first pipe body (11), the top of the first pipe body (11) is communicated with the exhaust end of the mini fan (9), small pipes (12) are communicated with the bottom of the first pipe body (11) at equal intervals, the top of each small pipe (12) is communicated with a second pipe body (13), the top of each second pipe body (13) penetrates through the shell (8) and extends to the outside of the shell (8), and an exhaust groove is formed in the bottom of each second pipe body (13);

the air inlet end of the mini fan (9) is communicated with a third pipe body (14), the top of the third pipe body (14) penetrates through the shell (8) and is communicated with the outside of the shell (8), and an air inlet groove is formed in the top of the third pipe body (14);

the second noise reduction device (6) comprises a hollow groove (15), a microphone (16), a control circuit (17) and a loudspeaker (18) are fixedly mounted in an inner cavity of the hollow groove (15) respectively, and an output end of the control circuit (17) is electrically connected with input ends of the microphone (16) and the loudspeaker (18) respectively; the top fixed mounting of hollow groove (15) inner chamber has battery (21), the output of battery (21) respectively with microphone (16), control circuit (17) and speaker (18) electric connection.

2. An earphone, characterized by: the active noise reduction device and the earphone body (1) comprise the active noise reduction device and the earphone body (1) as claimed in claim 1, wherein the earphone body (1) is of a headset structure, the earphone body (1) comprises a head band (2), hollow plates (3) are fixedly mounted on two sides of the bottom of the head band (2), a sound generating portion (4) is hinged to the bottom of the inner side of each hollow plate (3), the first noise reduction device (5) is fixedly mounted at the top of one side, away from the sound generating portion (4), of each hollow plate (3), a hollow groove (15) is formed in the inner cavity of each hollow plate (3), one side of the second noise reduction device (6) is communicated with the outside of each hollow plate (3), and a sponge pad (7) is arranged on the outer side of each hollow plate (3) and at the joint of the second noise reduction device (6) and each hollow plate (3).

3. A headset according to claim 2, characterized in that: the upper end and the lower end of one side of the hollow plate (3) are respectively provided with a first sound inlet hole (19) and a second sound inlet hole (20), and the first sound inlet hole (19) and the second sound inlet hole (20) are respectively arranged corresponding to the microphone (16) and the loudspeaker (18).

4. A headset according to claim 2, characterized in that: the top in hollow core plate (3) outside bonds has rubber seat (22), casing (8) are inlayed and are established the inner chamber at rubber seat (22).

5. A headset according to claim 4, characterized in that: the upper end and the lower end of the rubber seat (22) are respectively bonded with a fixed block (23), and the fixed blocks (23) are bolted with the shell (8) through screws.

6. A headset according to claim 2, characterized in that: the sounding part (4) comprises a sounder (24), the outer side of the sounder (24) is hinged with the inner side of the hollow plate (3), a protective ring (25) is sleeved on the surface of the sounder (24), and the inner side of the sounder (24) is bolted with a sound insulation ring (26).