Noise-canceling earphone structure

Abstract

The present invention provides a noise-canceling ear canal earphone structure, which includes a housing, a fixing seat, a sound-emitting component, a sound-receiving component, and an ear pad. The housing has a first sound output port. The fixing seat has a second sound output port and a fixing portion located between the first sound output port and the second sound output port. The sound-emitting component is mounted on the fixing seat. The second sound output port is located between the sound-emitting component and the fixing portion. The sound-receiving component is fixed to the fixing portion. The sound-receiving component is electrically connected to the sound-emitting component. The ear pad is mounted on the housing and has a front cavity sound channel connected to the first sound output port. The sound-emitting component and the sound-receiving component respectively have a sound-emitting surface and a sound-receiving surface facing the front cavity sound channel.

Description

Technical Field

[0001] The present invention relates to an ear canal earphone structure capable of canceling noise, and in particular to an ear canal earphone structure capable of canceling noise and collecting ambient noise in front of a sound-generating component. Background Art

[0002] If a general in-ear headphone has a noise cancellation function, the microphone used for receiving sound is usually installed in the rear sound cavity of the headphone, that is, on the outside of the headphone, and the microphone directly picks up external environmental noise.

[0003] While existing microphones are easy to assemble, they are not very effective at picking up noise entering the ear canal. It is also difficult to install the microphone in the front sound chamber of current ear canal headphones because the front sound chamber is too small to accommodate the microphone and its wiring. Summary of the Invention

[0004] The inventors then devoted their minds to careful research and developed a noise-canceling ear canal earphone structure, which places the sound receiving component between the sound generating component and the front cavity sound channel to achieve the purpose of increasing the amount of noise picked up by the ear canal.

[0005] The present invention provides a noise-canceling ear canal earphone structure, comprising a housing, a fixing seat, a sound-emitting component, a sound-receiving component, a flexible circuit board, and an ear pad. The housing has a first sound output port. The fixing seat has a fixing body and a fixing portion. The fixing body is disposed in the housing and has a second sound output port corresponding to the first sound output port. The fixing portion is connected to the fixing body and is located between the first and second sound output ports. The sound-emitting component is assembled to the fixing body of the fixing seat and exposed to the second sound output port. The second sound output port is located between the sound-emitting component and the fixing portion. The sound-receiving component is fixed to the fixing portion and is electrically connected to the sound-emitting component. The ear pad is assembled to the housing and has a front cavity sound channel connected to the first sound output port. The sound-emitting component has a sound-emitting surface, and the sound-receiving component has a sound-receiving surface. Both the sound-emitting surface and the sound-receiving surface face the front cavity sound channel.

[0006] In an embodiment, the accommodating shell has a channel, the first sound output port is located at the end of the channel, the channel is provided with a plurality of openings, the fixing body of the fixing seat extends a plurality of first assembly parts, each of the first assembly parts extends from each of the openings to be assembled on the ear pad.

[0007] In an embodiment, the ear pad has a hard ear pad portion, and the hard ear pad portion is provided with a plurality of second assembly portions corresponding to the first assembly portions. Each of the first assembly portions extends from each of the openings to be assembled with each of the second assembly portions.

[0008] In an embodiment, each of the first assembly parts is an elastic hook, the hard part of the ear pad includes a bottom wall, a side wall connected to and surrounding the bottom wall, the bottom wall has an opening corresponding to the first sound output port, the side wall is looped around the outside of the channel, and each of the second assembly parts is a groove provided on the side wall.

[0009] In an embodiment, the accommodating shell has an annular recess around the channel to accommodate the side wall of the hard part of the ear pad, and the fixing body of the fixing seat is assembled on the second assembly parts by the first assembly parts, and abuts against the inner side wall of the accommodating shell opposite to the annular recess.

[0010] In an embodiment, the fixing portion is a frame and has a receiving opening, and the sound receiving assembly is received in the receiving opening.

[0011] In an embodiment, the in-ear earphone structure further includes a flexible circuit board, which electrically connects the sound receiving component and the sound emitting component and has a supporting portion, which supports the sound receiving component and is located between the sound receiving component and the first sound output port, and the supporting portion also has a sound receiving hole to expose the sound receiving component.

[0012] In an embodiment, the flexible printed circuit board further has an extension portion, which extends from the supporting portion and bypasses one side of the fixing body of the fixing seat to enter the interior of the accommodating shell.

[0013] In an embodiment, the frame has a positioning protrusion, and one side of the carrying portion has a positioning concave portion corresponding to the positioning protrusion.

[0014] In an embodiment, along a direction parallel to the front cavity sound channel, the sound-emitting component has a sound-emitting axis, the sound-receiving component has a sound-receiving axis, the sound-emitting axis does not overlap with the sound-receiving axis, the sound-receiving axis and the central axis of the front cavity sound channel are coplanar on an axial plane, and the axial plane can symmetrically divide the cross-section of the front cavity sound channel.

[0015] In this way, the noise-canceling in-ear earphone structure of the present invention can set the sound receiving component between the sound-emitting component and the front cavity sound channel to increase the amount of noise entering the ear canal. At the same time, by fixing the sound receiving component to the fixed part of the fixing seat, the sound receiving component can be set in the limited space of the accommodating shell near the front cavity sound channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A partial cross-sectional view of a noise-canceling ear canal earphone structure according to a specific embodiment of the present invention Figure 1 ;

[0017] Figure 2 A partial cross-sectional view of a noise-canceling ear canal earphone structure according to a specific embodiment of the present invention Figure 2 ;

[0018] Figure 3 Schematic diagram of the appearance of the noise-canceling ear canal earphone structure according to a specific embodiment of the present invention Figure 1 ;

[0019] Figure 4 Schematic diagram of the appearance of the noise-canceling ear canal earphone structure according to a specific embodiment of the present invention Figure 2 ;

[0020] Figure 5 Schematic diagram of the assembly of the sound-generating component, the fixing base and the flexible circuit board of the ear canal earphone structure with noise cancellation according to a specific embodiment of the present invention Figure 1 ;

[0021] Figure 6 Schematic diagram of the assembly of the sound-generating component, the fixing base and the flexible circuit board of the ear canal earphone structure with noise cancellation according to a specific embodiment of the present invention Figure 2 ;

[0022] Figure 7 Schematic diagram of the assembly of the sound-generating component, fixing base, flexible circuit board and accommodating shell of the ear canal earphone structure with noise cancellation according to a specific embodiment of the present invention Figure 1 ;

[0023] Figure 8 Schematic diagram of the assembly of the sound-generating component, fixing base, flexible circuit board and accommodating shell of the ear canal earphone structure with noise cancellation according to a specific embodiment of the present invention Figure 2 ;

[0024] Figure 9 Schematic diagram of the assembly of the sound-generating component, fixing base, flexible circuit board and accommodating shell of the ear canal earphone structure with noise cancellation according to a specific embodiment of the present invention Figure 3 ;

[0025] Figure 10 Schematic diagram of the assembly of the sound-generating component, fixing base, flexible circuit board and accommodating shell of the ear canal earphone structure with noise cancellation according to a specific embodiment of the present invention Figure 4 ;

[0026] Figure 11 Schematic diagram of the assembly of the housing, fixing base and ear pad of the ear canal earphone structure with noise cancellation according to a specific embodiment of the present invention Figure 1 ;

[0027] Figure 12 Schematic diagram of the assembly of the housing, fixing base and ear pad of the ear canal earphone structure with noise cancellation according to a specific embodiment of the present invention Figure 2 ;

[0028] Figure 13 Schematic diagram of the relative positions of the sound-emitting component, the sound-receiving component, and the ear pad of the noise-canceling ear canal earphone structure according to a specific embodiment of the present invention Figure 1 ;

[0029] Figure 14 Schematic diagram of the relative positions of the sound-emitting component, the sound-receiving component, and the ear pad of the noise-canceling ear canal earphone structure according to a specific embodiment of the present invention Figure 2 ;

[0030] Figure 15 Schematic diagram of the relative positions of the sound-emitting component, the sound-receiving component, and the ear pad of the noise-canceling ear canal earphone structure according to a specific embodiment of the present invention Figure 3 ;

[0031] Figure 16 Schematic diagram of the relative positions of the sound-emitting component, the sound-receiving component, and the ear pad of the noise-canceling ear canal earphone structure according to a specific embodiment of the present invention Figure 4 .

[0032]

Explanation of symbols

[0033] 1. Noise-canceling ear canal headphone structure

[0034] 10 accommodating housing

[0035] 100 First sound output port

[0036] 101 front housing

[0037] 102 rear housing

[0038] 103 channels

[0039] 104 openings

[0040] 105 annular recess

[0041] 11 Fixed seat

[0042] 110 fixed body

[0043] 111 Fixed part

[0044] 112 Second audio output port

[0045] 113 Container

[0046] 114 Positioning convex part

[0047] 115 First Group Department

[0048] 12 Sound Components

[0049] 120 sounding surface

[0050] 13 Radio components

[0051] 130 Sound receiving surface

[0052] 14 Flexible Printed Circuit Board

[0053] 141 bearing part

[0054] 142 sound holes

[0055] 143 extension

[0056] 144 Positioning recess

[0057] 15 ear pads

[0058] 150 front vocal tract

[0059] 151 Hard part of ear pad

[0060] 152 Second Group Department

[0061] 153 bottom wall

[0062] 154 sidewall

[0063] 155 Opening

[0064] 156 First surrounding part

[0065] 157 Second surrounding part

[0066] 158 Soft part of ear pad

[0067] F direction

[0068] S1 vocal axis

[0069] S2 radio axis

[0070] S3 center axis

[0071] P1 axial plane

[0072] P2 section DETAILED DESCRIPTION

[0073] In order to fully understand the purpose, features and effects of the present invention, the present invention is further described in detail through the following specific embodiments and in conjunction with the accompanying drawings, as follows:

[0074] Please refer to Figures 1 to 8An embodiment of the present invention provides a noise-canceling ear canal earphone structure 1, which includes a housing 10, a fixing seat 11, a sound-emitting component 12, a sound-receiving component 13, and an ear pad 15. The housing 10 has a first sound output port 100. The noise-canceling ear canal earphone structure 1 is placed in front of the human ear canal (not shown in the figure) with the ear pad 15. The fixing seat 11 has a fixing body 110 and a fixing portion 111. The fixing body 110 is disposed in the housing 10 and has a second sound output port 112 corresponding to the first sound output port 100. The fixing portion 111 is connected to the fixing body 110 and is located between the first sound output port 100 and the second sound output port 112. The sound-emitting component 12 is assembled on the fixing body 110 of the fixing seat 11 and exposed at the second sound output port 112. The second sound output port 112 is located between the sound-emitting component 12 and the fixing portion 111. The sound receiving assembly 13 is fixed to the fixing portion 111 and is electrically connected to the sound emitting assembly 12. The ear pad 15 is assembled with the housing 10 and has a front cavity sound channel 150 connected to the first sound output port 100. The sound emitting assembly 12 has a sound emitting surface 120, and the sound receiving assembly 13 has a sound receiving surface 130. Both the sound emitting surface 120 and the sound receiving surface 130 face the front cavity sound channel 150. The sound emitting assembly 12 can be a speaker that drives the diaphragm to vibrate using various transduction principles. The sound receiving assembly 13 can be a microphone.

[0075] In this way, the noise-canceling in-ear earphone structure 1 of the present invention can set the sound receiving component 13 between the sound-emitting component 12 and the front cavity sound channel 150 to increase the amount of noise entering the ear canal. At the same time, by fixing the sound receiving component 13 on the fixing portion 111 of the fixing seat 11, the sound receiving component 13 can be set in the limited space of the accommodating shell 10 near the front cavity sound channel 150.

[0076] like Figure 1 and Figure 2 As shown, the housing 10 may include a front housing 101 and a rear housing 102. The front housing 101 has the first sound output port 100 and is used to assemble the fixing base 11. The rear housing 102 is used to accommodate active and passive electronic components (not shown) such as a battery, a signal processing chip, and an audio amplifier chip.

[0077] like Figure 1 、 Figure 2 、 Figure 5 and Figure 6As shown, in the embodiment, the fixing portion 111 can be a frame and have a receiving opening 113, and the sound receiving component 13 is received in the receiving opening 113, but it is not limited thereto, and the fixing portion 111 can also be in other forms. In addition, the noise-canceling ear canal earphone structure 1 of the present invention can also include a flexible circuit board 14, and the flexible circuit board 14 has a supporting portion 141, and the supporting portion 141 supports the sound receiving component 13 and is located between the sound receiving component 13 and the first sound output port 100, and the supporting portion 141 has a sound receiving hole 142 to expose the sound receiving component 13. The fixing portion 111 of the frame can have a positioning protrusion 114, and one side of the supporting portion 141 has a positioning recess 144 corresponding to the positioning protrusion 114. When the positioning recess 144 is positioned on the positioning protrusion 114, the sound receiving component 13 also enters the receiving opening 113 at the same time to enhance the stability of the assembly. The flexible printed circuit board 14 may further include an extension portion 143. This extension portion 143 extends from the supporting portion 141, bypasses a side of the fixing body 110 of the fixing base 11, and enters the interior of the accommodating housing 10, namely, the rear housing 102, to electrically connect to active and passive electronic components such as the battery, signal processing chip, and audio amplifier chip. The flexible printed circuit board 14 can transmit sound signals and send picked-up noise signals to the signal processing chip for processing.

[0078] like Figure 5 and Figure 6 As shown, in an embodiment, the fixing body 110 of the fixing base 11 can be encircled around the outer side of the sound-emitting component 12. For example, corresponding concave and convex structures (not shown) can be provided between the sound-emitting component 12 and the fixing body 110, or the fixing body 110 can be elastic to tightly fit the sound-emitting component 12.

[0079] like Figures 7 to 12As shown, in this embodiment, the front shell 101 of the accommodating housing 10 may have a channel 103, with the first sound output port 100 located at the end of the channel 103. The channel 103 is also provided with a plurality of openings 104. The fixing body 110 of the fixing base 11 extends from a plurality of first assembly portions 115, each of which extends from a respective opening 104 to be assembled with the ear pad 15. Furthermore, the ear pad 15 may have a hard ear pad portion 151, each of which is provided with a plurality of second assembly portions 152 corresponding to the first assembly portions 115, each of which extends from a respective opening 104 to be assembled with a respective second assembly portion 152. Each of the first assembly portions 115 can be an elastic hook. The ear pad hard portion 151 includes a bottom wall 153 and a side wall 154 connected to and surrounding the bottom wall 153. The bottom wall 153 has an opening 155 corresponding to the first sound output port 100. The side wall 154 surrounds the outer side of the channel 103. Each of the second assembly portions 152 is a groove formed in the side wall 154. The elastic hook of the fixing base 11 can snap into the groove of the ear pad 15. However, this is not limited to this embodiment; the first assembly portion 115 and the second assembly portion 152 can also have other shapes. The fixing body 110 of the fixing base 11 can be shaped to correspond to the front housing 101 of the housing 10, so as to fit tightly therewith. As described above, the noise-canceling ear canal earphone structure 1 of the present invention allows the ear pad 15 to be repeatedly assembled and disassembled via the elastic hook of the fixing base 11. In addition, since the elastic hook of the fixing base 11 is elastic, the ear pad 15 can be stably buckled on the fixing base 11 , and the ear pad 15 is durable when repeatedly assembled and disassembled.

[0080] like Figure 11 and Figure 12As shown, in this embodiment, the ear pad component 15 may further include a soft ear pad portion 158 having a first surrounding portion 156 and a second surrounding portion 157. The first surrounding portion 156 surrounds the front sound channel 150, and one side of the first surrounding portion 156 is connected to the bottom wall 153 and the side wall 154 of the hard ear pad portion 151. For example, the soft ear pad portion 158 and the hard ear pad portion 151 may be integrally injection molded. The soft ear pad portion 158 is made of a soft material, while the hard ear pad portion 151 is made of a hard material. The fixing base 11 and the hard ear pad portion 151 may both be made of a hard material, so that the first assembly portions 115 are firmly assembled to the second assembly portions 152. The second surrounding portion 157 is folded over and surrounds the outside of the first surrounding portion 156. The housing 10 has an annular recess 105 around the passage 103 to accommodate the connection between the sidewall 154 of the hard earpad portion 151 and the soft earpad portion 158. This ensures that the earpad 15 is securely attached to the housing 10 and prevents it from falling off. Furthermore, the fixing body 110 of the fixing base 11 is assembled with the first assembly portions 115 to the second assembly portions 152, abutting against the inner sidewall of the housing 10 opposite the annular recess 105, ensuring a tight and stable overall structure. When the earpad 15 is assembled to the fixing base 11, it is also simultaneously secured to the housing 10. This eliminates the need for separate attachment of the earpad 15 and the fixing base 11 to the housing 10, simplifying assembly.

[0081] like Figures 13 to 16 As shown in the embodiment, along the direction F parallel to the front cavity sound channel 150, the sound-emitting component 12 has a sound-emitting axis S1, and the sound-receiving component 13 has a sound-receiving axis S2, which can pass through the sound-receiving hole 142. The sound-emitting axis S1 does not overlap with the sound-receiving axis S2, but the sound-receiving axis S2 is aligned with the central axis S3 of the front cavity sound channel 150 ( Figure 13The dotted line) is coplanar with the axial plane P1, and the axial plane P1 can symmetrically divide the cross section of the front cavity sound channel 150. As for the sound axis S1, it can be located on the section P2 parallel to the axial plane P1 to clearly show that the sound axis S1 does not overlap with the sound receiving axis S2. The benefit of the sound axis S1 not overlapping with the sound receiving axis S2 is that it can prevent the sound output by the sound-emitting component 12 from being blocked by the sound receiving component 13 to produce reflection and diffraction, resulting in changes in the sound frequency and thus affecting the sound quality. Although the sound receiving axis S2 does not overlap with the central axis S3, it is still facing the front cavity sound channel 150 because it is passed by the axial plane P1, so that the noise entering the front cavity sound channel 150 can be accurately picked up. In this embodiment, the front cavity sound channel 150 is mainly aligned with the sound receiving component 13 rather than the sound emitting component 12 to make the sound reception more accurate; however, the sound receiving axis S2 of the sound receiving component 13 is slightly deviated from the central axis S3 of the front cavity sound channel 150 to provide space for the sound emitting component 12 to emit sound, thereby achieving a balance between sound quality and sound reception effect.

[0082] The present invention has been disclosed above with reference to preferred embodiments. However, those skilled in the art will appreciate that these embodiments are intended only to illustrate the present invention and should not be interpreted as limiting the scope of the present invention. It should be noted that any equivalent variations and substitutions to these embodiments are intended to be encompassed within the scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A noise-canceling ear canal earphone structure, characterized in that: Include: An accommodating housing having a first sound output port; A fixing base having a fixing body and a fixing portion, wherein the fixing body is disposed in the accommodating shell and has a second sound output port corresponding to the first sound output port, and the fixing portion is connected to the fixing body and is located between the first sound output port and the second sound output port; a sound-emitting component assembled on the fixing body of the fixing seat and exposed at the second sound output port, wherein the second sound output port is located between the sound-emitting component and the fixing portion; A sound receiving component is fixed on the fixing portion, and the sound receiving component is electrically connected to the sound generating component; an ear pad, assembled on the housing and having a front cavity sound channel connected to the first sound output port; as well as A flexible printed circuit board electrically connecting the sound receiving component and the sound emitting component and having a supporting portion, the supporting portion supporting the sound receiving component and being located between the sound receiving component and the first sound output port, the supporting portion also having a sound receiving hole to expose the sound receiving component; The sound-emitting component has a sound-emitting surface, and the sound-receiving component has a sound-receiving surface, and both the sound-emitting surface and the sound-receiving surface face the front cavity sound channel; In which, the fixing part is a frame and has a accommodating opening, and the sound receiving component is accommodated in the accommodating opening; the flexible circuit board also has an extension part, which extends from the supporting part and bypasses one side of the fixed body of the fixing seat and enters the interior of the accommodating shell; along the direction parallel to the front cavity sound channel, the sound-emitting component has a sound-emitting axis, and the sound receiving component has a sound-emitting axis, which does not overlap with the sound receiving axis, and the sound receiving axis and the central axis of the front cavity sound channel are coplanar with the axial plane, and the axial plane symmetrically divides the cross-section of the front cavity sound channel, and the sound-emitting axis is located on the section parallel to the axial plane.

2. The noise-canceling ear canal earphone structure according to claim 1, wherein: The housing has a channel, the first sound output port is located at the end of the channel, the channel is provided with a plurality of openings, the fixing body of the fixing seat extends a plurality of first assembly parts, each of the first assembly parts extends from each of the openings to be assembled with the ear pad.

3. The noise-canceling ear canal earphone structure according to claim 2, wherein: The ear pad component has an ear pad hard part. The ear pad hard part is provided with a plurality of second assembly parts corresponding to the first assembly parts. Each of the first assembly parts extends out from each of the openings to be assembled on each of the second assembly parts.

4. The noise-canceling ear canal earphone structure according to claim 3, wherein: Each of the first assembly parts is an elastic hook, the hard part of the ear pad includes a bottom wall, a side wall connected to and surrounding the bottom wall, the bottom wall has an opening corresponding to the first sound output port, the side wall is looped around the outside of the channel, and each of the second assembly parts is a groove provided on the side wall.

5. The noise-canceling ear canal earphone structure according to claim 4, wherein: The accommodating shell has an annular recess around the channel to accommodate the side wall of the hard part of the ear pad. The fixing body of the fixing seat is assembled on the second assembly parts by the first assembly parts, and abuts against the inner side wall of the accommodating shell opposite to the annular recess.

6. The noise-canceling ear canal earphone structure according to claim 1, wherein: The frame has a positioning protrusion, and one side of the bearing portion has a positioning concave corresponding to the positioning protrusion.

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