Headphone noise reduction structure and headphone

Abstract

The present invention provides an earphone noise reduction structure and earphones, the earphone noise reduction structure comprises a shell, a speaker and a front cavity microphone, the shell has a accommodating cavity, the shell is provided with a sound hole connected to the accommodating cavity; the speaker is connected to the cavity wall of the accommodating cavity and has a sound outlet hole for emitting sound, the speaker divides the accommodating cavity into a sound-emitting rear cavity and a sound-emitting front cavity, the sound-emitting hole is connected to the sound-emitting front cavity, and the sound outlet hole faces the sound-emitting front cavity; the front cavity microphone is connected to the shell and located in the sound-emitting front cavity, connected to the shell and located in the sound-emitting front cavity, the front cavity microphone is used to receive noise signals and emit a sound signal with a phase opposite to the noise signal after processing the noise signal to offset the noise signal. The earphone noise reduction structure can eliminate noise signals, thereby eliminating noise interference inside the earphone and in the human ear for the user, and purifying the sound heard by the user.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic products, and in particular relates to an earphone noise reduction structure and an earphone. Background Art

[0002] Bluetooth headsets are small devices based on Bluetooth technology, which eliminate the inconvenience caused by wires to users, achieve hands-free operation, and facilitate users to move freely. However, the Bluetooth headsets currently on the market do not have a noise reduction effect. Users are easily disturbed by the noise inside the ears and the headset body during use, which affects the sound quality. Summary of the invention

[0003] The purpose of the present invention is to provide an earphone noise reduction structure and an earphone, aiming to solve the technical problem in the prior art that users are easily disturbed by noise inside the ear and the earphone body during use.

[0004] The present invention is implemented as follows: an earphone noise reduction structure, comprising:

[0005] The shell has a housing cavity, and the shell is provided with a sound hole connected to the housing cavity;

[0006] A speaker connected to the cavity wall of the accommodating cavity and having a sound outlet hole for emitting sound, wherein the speaker divides the accommodating cavity into a sound-disturbing rear cavity and a sound-disturbing front cavity, the sound-disturbing hole is connected to the sound-disturbing front cavity, and the sound outlet hole faces the sound-disturbing front cavity;

[0007] A front cavity microphone is connected to the shell and located in the front cavity of the sound-shifting device. The front cavity microphone is used to receive a noise signal and emit a sound signal with a phase opposite to that of the noise signal after processing the noise signal to offset the noise signal.

[0008] The front cavity microphone includes a microphone body and a welding foot connected to one side of the microphone body, the microphone body has a first surface provided with the welding foot and a second surface away from the first surface, the microphone body is provided with a microphone hole on the second surface thereof for receiving the sound signal in the misaligned front cavity, the second surface is away from the speaker and is spaced apart from the cavity wall of the misaligned front cavity.

[0009] Furthermore, the sound hole deviates from the axis of the front cavity microphone.

[0010] Furthermore, the axis of the loudspeaker coincides with the axis of the front cavity microphone.

[0011] Furthermore, the shell also includes a limiting member connected to the cavity wall of the front cavity and used for fixing the front cavity microphone.

[0012] Furthermore, the limiting member is provided with a clamping groove, the front cavity microphone is clamped in the clamping groove and the second surface thereof is spaced apart from the bottom of the clamping groove, and the groove wall of the clamping groove is provided with a connecting hole connected to the out-of-tune front cavity, so that the microphone hole is connected to the out-of-tune front cavity.

[0013] Furthermore, the limiting member is provided on a step structure on the groove wall thereof, and the front cavity microphone head abuts against the step structure.

[0014] The present invention provides an earphone, comprising the earphone noise reduction structure as described above.

[0015] Furthermore, the shell includes a receiving component for transmitting sound signals and an earplug connected to the receiving component and used to be inserted into the ear, and the earplug has a connecting hole connected to the sound hole.

[0016] Furthermore, the earplug is made of plastic material.

[0017] The technical effect of the present invention compared with the prior art is as follows: the earphone noise reduction structure of the present invention divides the accommodating cavity into a sound-dispersing rear cavity and a sound-dispersing front cavity through a speaker. The user aligns the sound-dispersing hole with the ear, and the sound signal emitted by the speaker is released from the sound-dispersing hole through the sound-dispersing front cavity and transmitted into the ear, thereby realizing the playback function of the earphone. The front cavity microphone is located in the sound-dispersing front cavity, and can receive and process the noise signal in the sound-dispersing front cavity itself and the noise signal transmitted into the sound-dispersing front cavity through the sound-dispersing hole from the ear, and emit a sound signal with a phase opposite to the received noise signal. The two phases are superimposed and offset, and the noise signal is eliminated. In this way, the noise interference inside the earphone and the human ear is eliminated for the user, and the sound heard by the user is purified. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention or the description of the prior art will be briefly introduced below. 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 creative work.

[0019] Figure 1 is a three-dimensional structural diagram of an earphone under a viewing angle provided by an embodiment of the present invention;

[0020] Figure 2 is a stereoscopic structural diagram of an earphone from another viewing angle provided by an embodiment of the present invention;

[0021] Figure 3 is a cross-sectional view of an earphone provided by an embodiment of the present invention;

[0022] Figure 4 is an exploded view of the earphone provided by an embodiment of the present invention.

[0023] Description of reference numerals:

[0024] 10. Shell; 101. Sound hole; 103. Accommodation cavity; 1031. Sound rear cavity; 1032. Sound front cavity; 11. Receiver; 12. Earplug; 121. Connector; 1210. Connecting hole; 122. Filling sleeve; 1220. Sleeve hole; 13. Limiter; 131. Snap-in slot; 132. Connecting hole; 20. Speaker; 201. Sound hole; 30. Front cavity microphone; 40. Controller; 50. Touch screen; 60. Sensor; 70. Indicator light DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by the terms "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] Please refer to Figure 1 and Figure 4 An embodiment of the present invention provides an earphone noise reduction structure, including a housing 10, a speaker 20 and a front cavity microphone 30.

[0030] Please refer to Figure 3 The shell 10 has a receiving cavity 103 , and the shell 10 is provided with a sound hole 101 connected to the receiving cavity 103 .

[0031] Please refer to Figure 3 The speaker 20 is connected to the cavity wall of the accommodating cavity 103 and has a sound outlet hole 201 for emitting sound. The speaker 20 divides the accommodating cavity 103 into a rear cavity 1031 and a front cavity 1032. The sound outlet hole 101 is connected to the front cavity 1032, and the sound outlet hole 201 faces the front cavity 1032.

[0032] Please refer to Figure 3 The front cavity microphone 30 is connected to the shell 10 and is located in the out-of-tune front cavity 1032. The front cavity microphone 30 includes a microphone body and a welding foot connected to one side of the microphone body. The microphone body has a first surface with the welding foot and a second surface away from the first surface. The microphone body is provided with a microphone hole on the second surface for receiving the sound signal in the out-of-tune front cavity 1032.

[0033] The earphone noise reduction structure of the present invention divides the accommodating cavity 103 into a sound-dispersing rear cavity 1031 and a sound-dispersing front cavity 1032 through the speaker 20. The user aligns the sound-dispersing hole 101 with the ear, and the sound signal emitted by the speaker 20 is emitted from the sound-dispersing hole 101 through the sound-dispersing front cavity 1032 and transmitted into the ear, thereby realizing the playback function of the earphone. The front cavity microphone 30 is located in the sound-dispersing front cavity 1032, and is capable of receiving and processing the noise signal in the sound-dispersing front cavity 1032 itself and the noise signal transmitted from the ear into the sound-dispersing front cavity 1032 through the sound-dispersing hole 101, and emitting a sound signal with a phase opposite to that of the received noise signal. The two phases are superimposed and offset, and the noise signal is eliminated, thereby eliminating noise interference for the user and purifying the sound heard by the user.

[0034] Please refer to Figure 3 In order to allow the front cavity microphone 30 to fully receive the sound signal in the stray sound front cavity 1032, the front cavity microphone 30 is spaced apart from the cavity wall of the stray sound front cavity 1032. If the microphone hole faces the sound outlet 201 of the speaker 20, the sound pressure on the front cavity microphone 30 is relatively large. When the sound emitted by the speaker 20 is too loud, it is very likely to exceed the maximum sound pressure of the front cavity microphone 30, affecting the noise reduction effect and sound quality, and may also produce howling. In the embodiment of the present invention, the second surface of the front cavity microphone 30 is set away from the speaker 20, so that the direct impact of the sound on the microphone hole can be avoided, and the influence of the sound pressure on the front cavity microphone 30 is reduced. The microphone hole can better absorb the noise in the stray sound front cavity 1032 and the ear, and achieve a better noise reduction effect.

[0035] Please refer to Figure 3 In the embodiment of the present invention, the sound hole 101 deviates from the axis of the front cavity microphone 30, so that the microphone hole can receive the sound waves reflected by the wall of the front cavity 1032, and the front cavity microphone 30 can not only receive the noise in the ear, but also receive the noise in the front cavity 1032.

[0036] Please refer to Figure 3Preferably, the axis of the speaker 20 coincides with the axis of the front cavity microphone 30, that is, the projection of the front cavity microphone 30 toward the speaker 20 is located at the center of the speaker 20. At this time, the sound signal received and emitted by the front cavity microphone 30 changes most evenly, and the noise reduction effect is best.

[0037] Please refer to Figure 3 Furthermore, the housing 10 further includes a stopper 13 connected to the cavity wall of the pre-voice cavity 1032 and used to fix the pre-voice microphone 30. The stopper 13 is used to prevent the pre-voice microphone 30 from shaking in the pre-voice cavity 1032 to avoid noise.

[0038] Please refer to Figure 3 In order to facilitate the installation and fixation of the front cavity microphone 30, the limiting member 13 is provided with a clamping groove 131, and the front cavity microphone 30 is clamped in the clamping groove 131 and its second surface is spaced from the groove bottom of the clamping groove 131 so that the microphone hole receives the noise signal, and the groove wall of the clamping groove 131 is provided with a connecting hole 132 connected to the sound-disturbing front cavity 1032, so that the microphone hole is connected to the sound-disturbing front cavity 1032.

[0039] Please refer to Figure 3 In order to prevent the front-cavity microphone 30 from being pressed into the bottom of the snap-fit ​​groove 131 during installation, causing the microphone hole to be unable to receive noise signals, the limiting member 13 is provided at a step structure on its groove wall, so that the front-cavity microphone 30 can abut against the step structure when being pressed into the snap-fit ​​groove 131, and the step structure is used to support the front-cavity microphone 30.

[0040] Please refer to Figure 1 and Figure 4 The embodiment of the present invention further provides an earphone, comprising the earphone noise reduction structure provided in the above embodiments. The earphone noise reduction structure has the same structural features as the earphone noise reduction structure in the above embodiments, and has the same functions, which will not be described here.

[0041] Further, in the embodiments of the present invention, please refer to Figure 1 and Figure 2 The housing 10 includes a receiving element 11 for transmitting sound signals, an earplug 12 connected to the receiving element 11 and inserted into the ear, and a limiting element 13 connected to the cavity wall of the sound-dispersing front cavity 1032 and used to fix the feedforward front cavity microphone 31.

[0042] Please refer to Figure 3 and Figure 4The earplug 12 includes a connector 121 connected to the receiver 11 and a filling sleeve 122 sleeved on the connector 121. The connector 121 is provided with a connecting hole 1210 connected to the sound-discharging hole 101. The filling sleeve 122 is elastic and is provided with a sleeve hole 1220 for matching with the connector 121. The cross section of the connector 121 is non-circular. The cross section of the sleeve hole 1220 is circular in a free state. When it is sleeved on the connector 121 with a non-circular cross section, it undergoes elastic deformation, which increases its adhesion to the side wall of the connector 121, thereby increasing the friction between the filling sleeve 122 and the connector 121, so that the connection between the filling sleeve 122 and the connector 121 is tighter.

[0043] Preferably, the filling sleeve 122 is made of plastic material so as to fit the contour of the ear and increase the friction between the filling sleeve 122 and the ear skin.

[0044] In the embodiment of the present invention, please refer to Figure 2 , Figure 3 and Figure 4 The earphone also includes a controller 40 connected to the shell 10 and located in the back cavity 1031 of the sound-shifting device, a touch screen 50 electrically connected to the controller 40 and connected to the shell 10, an indicator light 70 electrically connected to the controller 40 and electrically connected to the touch screen 50, and a sensor 60 provided on the receiving element 11.

[0045] Please refer to Figure 1 and Figure 4 The touch screen 50 is used for the user to touch and control the controller 40. The controller 40 is electrically connected to the speaker 20 and is used to control the speaker 20 to emit a sound signal. The controller 40 is electrically connected to the front chamber microphone assembly 30 and is used to control the front chamber microphone assembly 30 to receive or emit a sound signal. When using, the user can press or click the touch screen 50 to turn on and off or pause and play, and can also adjust the volume through the touch screen 50. Please refer to Figure 2 The sensor 60 is facing the ear, and the sensor 60 is preferably an optical sensor 60. The controller 40 is used to control the controller 40 to disconnect the control of the speaker 20 after the sensor 60 senses that the earplug 12 is out of the ear.

[0046] Please refer to Figure 1 The indicator light 70 is used to indicate the control state of the touch screen 50. Optionally, the indicator light 70 can be turned on when the user operates the touch screen 50 and turned off when the operation is released, or it can be turned on when the headset is in working state and turned off when the headset is turned off or in pause state.

[0047] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A headphone noise reduction structure, characterized in that: include: The shell has a housing cavity, and the shell is provided with a sound hole connected to the housing cavity; A speaker connected to the cavity wall of the accommodating cavity and having a sound outlet hole for emitting sound, wherein the speaker divides the accommodating cavity into a sound-disturbing rear cavity and a sound-disturbing front cavity, the sound-disturbing hole is connected to the sound-disturbing front cavity, and the sound outlet hole faces the sound-disturbing front cavity; A front cavity microphone, connected to the housing and located in the front cavity of the sound-shifting device, the front cavity microphone is used to receive a noise signal and emit a sound signal with a phase opposite to that of the noise signal after processing the noise signal, so as to offset the noise signal; The front cavity microphone includes a microphone body and a welding foot connected to one side of the microphone body, the microphone body has a first surface provided with the welding foot and a second surface away from the first surface, the microphone body is provided with a microphone hole on the second surface thereof for receiving the sound signal in the misaligned front cavity, the second surface is away from the speaker and is spaced apart from the cavity wall of the misaligned front cavity.

2. The headphone noise reduction structure according to claim 1, characterized in that: The sound hole deviates from the axis of the front cavity microphone.

3. The headphone noise reduction structure according to claim 1, characterized in that: The axis of the loudspeaker coincides with the axis of the front chamber microphone.

4. The headphone noise reduction structure according to claim 1, characterized in that: The shell also includes a limiting component connected to the cavity wall of the front cavity and used for fixing the microphone of the front cavity.

5. The headphone noise reduction structure according to claim 4, characterized in that: The limiting member is provided with a clamping groove, the front cavity microphone is clamped in the clamping groove and the second surface thereof is spaced apart from the groove bottom of the clamping groove, and the groove wall of the clamping groove is provided with a connecting hole connected to the stray sound front cavity, so that the microphone hole is connected to the stray sound front cavity.

6. The headphone noise reduction structure according to claim 5, characterized in that: The limiting member is provided with a step structure on the groove wall thereof, and the front cavity microphone head abuts against the step structure.

7. A headset, characterized in that: It comprises the headphone noise reduction structure as claimed in any one of claims 1 to 6.

8. The earphone according to claim 7, characterized in that The shell comprises a receiving component for transmitting sound signals and an earplug connected to the receiving component and used for plugging into the ear, wherein the earplug has a connecting hole connected to the sound hole.

9. The earphone according to claim 8, characterized in that The earplug is made of plastic material.

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