CN214125515U - Ear canal type earphone structure capable of eliminating noise - Google Patents

Abstract

The utility model provides a can make an uproar ear canal formula earphone structure disappears, it contains holding casing, fixing base, sound production subassembly, radio reception subassembly and ear pad spare. The accommodating shell is provided with a first sound output port. The fixing seat is provided with a second sound output port and a fixing part located between the first sound output port and the second sound output port. The sounding component is assembled on the fixed seat. The second sound output port is located between the sound production assembly and the fixing portion. The sound receiving component is fixed on the fixing part. The sound receiving component is electrically connected with the sounding component. The ear pad set is arranged on the accommodating shell and is provided with a front cavity sound channel communicated with the first sound output port. The sounding component and the sound receiving component are respectively provided with a sounding surface and a sound receiving surface which face the front cavity sound channel.

Description

Ear canal type earphone structure capable of eliminating noise

Technical Field

The utility model relates to a can make an uproar duct type earphone structure disappears especially relates to a can collect the duct type earphone structure of making an uproar that can make an uproar in sound production subassembly the place ahead.

Background

In general, when an ear canal type earphone has a noise cancellation function, a microphone for receiving sound is usually installed in a rear sound cavity of the earphone, i.e., outside the earphone, and the microphone directly picks up external ambient noise.

The prior art microphones, although easy to assemble, are not effective in picking up noise transmitted into the ear canal. The existing ear canal type earphone is difficult to change the microphone into the front sound cavity of the earphone, because the space of the front sound cavity is narrow and difficult to accommodate the microphone and the circuit thereof.

SUMMERY OF THE UTILITY MODEL

The inventor is diligent in research, and further develops a noise-canceling ear canal type earphone structure, and the sound receiving component is arranged between the sound production component and the front cavity sound channel, so as to achieve the purpose of improving the volume of the noise transmitted into the ear canal.

The utility model provides a can noise reduction's duct earphone structure, it contains holding casing, fixing base, sound production subassembly, radio reception subassembly, flexible circuit board and ear pad spare. The accommodating shell is provided with a first sound output port. The fixing seat is provided with a fixing body and a fixing part, the fixing body is arranged in the accommodating shell and is provided with a second sound output port corresponding to the first sound output port, and the fixing part is connected to the fixing body and is located between the first sound output port and the second sound output port. The sounding component is assembled on the fixing body of the fixing seat and exposed out of the second sound output port, and the second sound output port is located between the sounding component and the fixing part. The sound receiving component is fixed on the fixing part and electrically connected with the sound production component. The ear pad set is arranged on the accommodating shell and is provided with a front cavity sound channel communicated with the first sound output port. The sound producing assembly has a sound producing surface, the sound receiving assembly has a sound receiving surface, and the sound producing surface and the sound receiving surface face the front cavity sound channel.

In an embodiment, the accommodating housing has a channel, the first sound output port is located at a tail end of the channel, the channel is provided with a plurality of openings, the fixing body of the fixing base extends out of a plurality of first group setting parts, and each first group setting part extends out of each opening to be arranged on the ear pad piece.

In one embodiment, the ear pad has a hard ear pad portion, the hard ear pad portion has a plurality of second set portions corresponding to the first set portions, and each of the first set portions extends from each of the openings to be assembled with each of the second set portions.

In an embodiment, each of the first assembling portions is an elastic hook, the hard portion of the ear pad includes a bottom wall and 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 annularly sleeved outside the channel, and each of the second assembling portions is a groove disposed on the side wall.

In an embodiment, the accommodating housing has an annular recess around the channel for accommodating the sidewall of the hard portion of the ear pad, and the fixing body of the fixing base is configured to abut against the inner sidewall of the accommodating housing opposite to the annular recess by the first assembling portions being assembled to the second assembling portions.

In an embodiment, the fixing portion is a frame and has an accommodating opening, and the sound receiving assembly is accommodated in the accommodating opening.

In an embodiment, the ear canal type earphone structure further includes a flexible circuit board electrically connected to the sound receiving component and the sound generating component and having a bearing portion, the bearing portion bearing the sound receiving component and being located between the sound receiving component and the first sound output port, the bearing portion having a sound receiving hole to expose the sound receiving component.

In an embodiment, the flexible circuit board further has an extending portion extending to the carrying portion and bypassing one side of the fixing body of the fixing base to enter the accommodating housing.

In an embodiment, the frame has a positioning protrusion, and one side of the bearing part has a positioning recess corresponding to the positioning protrusion.

In an embodiment, the sound generating assembly has a sound generating axis and the sound receiving assembly has a sound receiving axis along a direction parallel to the front cavity sound channel, the sound generating axis is not overlapped with the sound receiving axis, the sound receiving axis and the central axis of the front cavity sound channel are coplanar with an axial plane, and the axial plane can symmetrically and equally divide the cross section of the front cavity sound channel.

Therefore, the utility model discloses a but duct earphone structure of making an uproar can set up the radio reception subassembly between sound production subassembly and front chamber sound channel in order to promote to pick up the volume of making an uproar in getting into the duct, on being fixed in the fixed part of fixing base through the radio reception subassembly simultaneously, can set up the radio reception subassembly in the limited space that the holding casing is close to the front chamber sound channel.

Drawings

Fig. 1 is a schematic partial cross-sectional view of a noise-canceling ear canal type earphone structure according to an embodiment of the present invention;

fig. 2 is a schematic partial sectional view of a noise-canceling ear canal type earphone structure according to an embodiment of the present invention;

fig. 3 is a schematic external view of a noise-canceling ear canal type earphone structure according to an embodiment of the present invention;

fig. 4 is a schematic external view of a noise-canceling ear canal type earphone structure according to an embodiment of the present invention;

fig. 5 is a first schematic view illustrating the sound-generating assembly, the fixing base and the flexible printed circuit board of the ear canal type earphone structure capable of canceling noise according to the embodiment of the present invention;

fig. 6 is a second schematic view illustrating the sound-generating assembly, the fixing base and the flexible printed circuit board of the ear canal type earphone structure capable of canceling noise according to the embodiment of the present invention;

fig. 7 is a first schematic view illustrating the sound-generating assembly, the fixing base, the flexible circuit board and the accommodating case of the noise-canceling ear canal type earphone structure according to the embodiment of the present invention;

fig. 8 is a second schematic view illustrating the sound-generating assembly, the fixing base, the flexible circuit board and the accommodating case of the noise-canceling ear canal type earphone structure according to the embodiment of the present invention;

fig. 9 is a third schematic view illustrating the sound-generating assembly, the fixing base, the flexible circuit board and the accommodating case of the noise-canceling ear canal type earphone structure according to the embodiment of the present invention;

fig. 10 is a fourth schematic view illustrating the sound-generating assembly, the fixing base, the flexible circuit board and the accommodating case of the noise-canceling ear canal type earphone structure according to the embodiment of the present invention;

fig. 11 is a first schematic view illustrating the assembly of the accommodating case, the fixing base and the ear pad of the noise-canceling ear canal type earphone structure according to the embodiment of the present invention;

fig. 12 is a second schematic view illustrating the assembly of the accommodating case, the fixing base and the ear pad of the noise-canceling ear canal type earphone structure according to the embodiment of the present invention;

fig. 13 is a schematic diagram showing relative positions of a sound-generating component, a sound-receiving component and an ear pad component of a noise-canceling ear canal type earphone structure according to an embodiment of the present invention;

fig. 14 is a schematic diagram of relative positions of a sound-generating component, a sound-receiving component and an ear pad component of a noise-canceling ear canal type earphone structure according to an embodiment of the present invention;

fig. 15 is a schematic diagram showing the relative positions of the sound-generating component, the sound-receiving component and the ear pad of the ear canal type earphone structure capable of canceling noise according to the embodiment of the present invention;

fig. 16 is a fourth schematic diagram illustrating relative positions of the sound-generating component, the sound-receiving component and the ear pad component of the ear canal type earphone structure capable of canceling noise according to the embodiment of the present invention.

[ notation ] to show

1 ear canal type earphone structure capable of eliminating noise

10 accommodating case

100 first sound outlet

101 front shell

102 rear shell

103 channel

104 open pore

105 annular recess

11 fixed seat

110 fixed body

111 fixed part

112 second sound output port

113 accommodating port

114 positioning boss

115 first assembling part

12 sounding assembly

120 sound producing face

13 radio component

130 radio surface

14 flexible circuit board

141 carrying part

142 acoustic hole

143 extension part

144 positioning recess

15 ear pad

150 front cavity acoustic channel

151 ear pad hard part

152 second set of parts

153 bottom wall

154 side wall

155 opening

156 first surrounding part

157 second surrounding portion

158 ear pad soft part

In the F direction

S1 sound axis

S2 sound reception axis

S3 center shaft

Axial plane P1

P2 tangent plane

Detailed Description

For fully understanding the objects, features and effects of the present invention, the present invention will now be described in further detail by the following specific embodiments in conjunction with the accompanying drawings, which are set forth below:

referring to fig. 1 to 8, an embodiment of the present invention provides a noise-canceling ear canal type earphone structure 1, which includes a housing 10, a fixing base 11, a sound generating component 12, a sound receiving component 13, and an ear pad 15. The accommodating case 10 has a first sound output port 100. The noise-canceling ear canal earphone structure 1 is placed with the ear pad 15 in front in the ear canal (not shown) of a human body. The fixing base 11 has a fixing body 110 and a fixing portion 111, the fixing body 110 is disposed in the accommodating casing 10 and has a second sound outlet 112 corresponding to the first sound outlet 100, and the fixing portion 111 is connected to the fixing body 110 and located between the first sound outlet 100 and the second sound outlet 112. The sounding element 12 is assembled on the fixing body 110 of the fixing base 11 and exposed to the second sound output port 112. The second sound output port 112 is located between the sound generating component 12 and the fixing portion 111. The sound receiving component 13 is fixed on the fixing portion 111, and the sound receiving component 13 is electrically connected to the sound generating component 12. The ear pad 15 is assembled to the housing 10 and has a front cavity sound channel 150 connected to the first sound output port 100. The sound generating component 12 has a sound generating surface 120, the sound receiving component 13 has a sound receiving surface 130, and both the sound generating surface 120 and the sound receiving surface 130 face the front cavity sound channel 150. The sound generating assembly 12 may be a speaker that drives a diaphragm to vibrate through various transduction principles. The sound receiving component 13 may be a microphone.

Therefore, the utility model discloses a but ear canal formula earphone structure 1 of making an uproar can set up radio subassembly 13 between sound production subassembly 12 and front chamber sound channel 150 and pick up the noise volume that gets into in the ear canal with the promotion, is fixed in the fixed part 111 of fixing base 11 through radio subassembly 13 simultaneously on, can set up radio subassembly 13 in the finite space that holding casing 10 is close to front chamber sound channel 150.

As shown in fig. 1 and 2, the accommodating case 10 may include a front casing 101 and a rear casing 102 assembled together. The front housing 101 has the first sound output port 100 and is used to assemble the fixed base 11. The rear housing 102 is used for accommodating active and passive electronic components (not shown) such as a battery, a signal processing chip, and an audio amplifier chip.

As shown in fig. 1, fig. 2, fig. 5 and fig. 6, in an embodiment, the fixing portion 111 may be a frame and has a receiving opening 113, and the sound-receiving component 13 is received in the receiving opening 113, but is not limited thereto, and the fixing portion 111 may also be in other forms. In addition, the ear canal type earphone structure 1 of the present invention can further include a flexible printed circuit 14, the flexible printed circuit 14 has a carrying portion 141, the carrying portion 141 carries the radio receiving component 13 and is located between the radio receiving component 13 and the first sound output port 100, and the carrying portion 141 has a sound receiving hole 142 to expose the radio receiving component 13. The fixing portion 111, which is a frame, may have a positioning protrusion 114, and one side of the carrying portion 141 has a positioning recess 144 corresponding to the positioning protrusion 114, when the positioning recess 144 is positioned at the positioning protrusion 114, the sound receiving component 13 also enters the receiving opening 113 at the same time, so as to improve the stability of assembly. The flexible circuit board 14 may further have an extending portion 143, wherein the extending portion 143 extends to the supporting portion 141 and bypasses one side of the fixing body 110 of the fixing base 11 to enter the accommodating casing 10, i.e. enter the rear housing 102, so as to be electrically connected to active and passive electronic components such as a battery, a signal processing chip, an audio amplification chip, and the like. The flexible circuit board 14 can transmit sound signals and transmit picked-up noise signals to the signal processing chip for processing.

As shown in fig. 5 and 6, in an embodiment, the fixing body 110 of the fixing base 11 can be sleeved outside the sounding component 12. For example, a corresponding concave-convex structure (not shown) may be disposed between the sounding component 12 and the fixing body 110, or the fixing body 110 may have elasticity to tightly fit the sounding component 12.

As shown in fig. 7 to 12, in an embodiment, the front casing 101 of the accommodating casing 10 may have a channel 103, the first sound output port 100 is located at an end of the channel 103, and the channel 103 is provided with a plurality of openings 104. The fixing body 110 of the fixing base 11 extends to form a plurality of first assembling portions 115, and each of the first assembling portions 115 extends from each of the openings 104 to be assembled with the ear pad 15. In addition, the ear pad 15 can have an ear pad hard portion 151, the ear pad hard portion 151 is provided with a plurality of second set portions 152 corresponding to the first set portions 115, and each of the first set portions 115 extends from each of the openings 104 to be set in each of the second set portions 152. Each of the first set 115 portions may be an elastic hook, the hard ear pad portion 151 includes a bottom wall 153, 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 is sleeved outside the channel 103, each of the second set 152 portions is a groove formed in the side wall 154, and the elastic hook of the fixing base 11 may be fastened to the groove of the ear pad 15. However, the present invention is not limited to this, and the first and second sets 115 and 152 may have other forms. The shape of the fixing body 110 of the fixing base 11 can correspond to the front casing 101 of the accommodating housing 10, so as to be closely attached to the front casing 101. As described above, the noise-canceling ear canal type earphone structure 1 of the present invention can be repeatedly disassembled and assembled by the elastic hook of the fixing base 11. In addition, because the elastic hook of the fixing base 11 has elasticity, the ear pad 15 can be stably fastened to the fixing base 11, and the ear pad 15 can be durable when being repeatedly disassembled and assembled.

As shown in fig. 11 and 12, in an embodiment, the ear pad 15 may further include an ear pad soft portion 158, and the ear pad soft portion 158 has a first surrounding portion 156 and a second surrounding portion 157. The first surrounding portion 156 surrounds the front cavity 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 ear pad hard portion 151, for example, the ear pad soft portion 158 and the ear pad hard portion 151 can be integrally formed by injection molding, the ear pad soft portion 158 is made of soft material, the ear pad hard portion 151 is made of hard material, and the fixing base 11 and the ear pad hard portion 151 can be made of hard material, so that the first assembling portions 115 are stably assembled to the second assembling portions 152. The second surrounding portion 157 is folded and surrounds the outside of the first surrounding portion 156. The housing case 10 has an annular recess 105 around the channel 103 for accommodating the structure of the connection between the sidewall 154 of the hard ear pad 151 and the soft ear pad 158, so as to ensure that the ear pad 15 can be firmly combined with the housing case 10 without falling off. In addition, the fixing body 110 of the fixing base 11 is assembled to the second assembling portions 152 by the first assembling portions 115, and abuts against the inner sidewall of the accommodating housing 10 relative to the annular recess 105, so that the whole structure is compact and stable. When the ear pad 15 is assembled on the fixing base 11, the ear pad 15 is also fixed to the accommodating housing 10, and the ear pad 15 and the fixing base 11 do not need to be fixed to the accommodating housing 10 separately, so as to simplify the assembly process.

As shown in fig. 13 to 16, in the embodiment, along the direction F parallel to the front cavity channel 150, the sound emitting element 12 has a sound emitting axis S1, the sound receiving element 13 has a sound receiving axis S2, and the sound receiving axis S2 passes through the sound receiving hole 142. The sound axis S1 does not overlap the sound axis S2, but the sound axis S2 is coplanar with the central axis S3 (dashed line in fig. 13) of the front cavity channel 150 in a plane P1, and the plane P1 symmetrically divides the cross-section of the front cavity channel 150. The sounding axis S1 can be located on a tangent plane P2 parallel to the axial plane P1 to clearly show that the sounding axis S1 does not overlap with the sound receiving axis S2. The sound axis S1 does not overlap the sound receiving axis S2, so as to prevent the sound outputted by the sound generating component 12 from being blocked by the sound receiving component 13 to cause reflection and diffraction, which results in the change of sound frequency and further affects sound quality. Although the sound receiving axis S2 does not overlap the central axis S3, it is passed by the axial plane P1 and therefore still faces the front cavity channel 150, so as to accurately pick up the noise entering the front cavity channel 150. In the present embodiment, the front cavity channel 150 is mainly aligned with the sound receiving component 13 rather than the sound emitting component 12, so as to receive sound more accurately; however, the sound receiving axis S2 of the sound receiving component 13 is slightly offset from the central axis S3 of the front cavity sound channel 150 to provide a sound emitting space for the sound emitting component 12, thereby achieving a balance between sound quality and sound receiving effect.

The present invention has been disclosed in terms of preferred embodiments, but those skilled in the art will recognize that such embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of the invention. It should be noted that all changes and substitutions equivalent to the embodiments are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims (10)

1. An ear canal earphone structure capable of canceling noise, comprising:

the accommodating shell is provided with a first sound output port;

the fixing seat is provided with a fixing body and a fixing part, the fixing body is arranged in the accommodating shell and is provided with a second sound output port corresponding to the first sound output port, and the fixing part is connected to the fixing body and is positioned between the first sound output port and the second sound output port;

the sounding assembly is assembled on the fixed body of the fixed seat and is exposed out of the second sound output port, and the second sound output port is positioned between the sounding assembly and the fixed part;

the sound receiving component is fixed on the fixing part and is electrically connected with the sound production component; and

the ear pad piece is assembled on the accommodating shell and is provided with a front cavity sound channel communicated with the first sound output port;

wherein, the sounding component is provided with a sounding surface, the radio receiving component is provided with a radio receiving surface, and the sounding surface and the radio receiving surface face to the front cavity sound channel.

2. The structure of claim 1, wherein the receiving housing has a channel, the first sound outlet is located at the end of the channel, the channel has a plurality of openings, the fixing body of the fixing base extends with a plurality of first set of portions, and each of the first set of portions extends from each of the openings to be assembled with the ear pad.

3. The structure of claim 2, wherein the ear pad member has a hard ear pad portion, the hard ear pad portion having a plurality of second set portions corresponding to the first set portions, each of the first set portions extending from each of the openings to be assembled with each of the second set portions.

4. The structure of claim 3, wherein each of the first set of portions is a resilient hook, the hard portion of the ear pad includes a bottom wall and a sidewall connected to and surrounding the bottom wall, the bottom wall has an opening corresponding to the first sound output port, the sidewall surrounds the channel, and each of the second set of portions is a groove formed in the sidewall.

5. The structure of claim 4, wherein the receiving housing has an annular recess around the channel for receiving the sidewall of the hard portion of the ear pad, and the fixing body of the fixing base is assembled with the first assembling portions and abuts against the inner sidewall of the receiving housing opposite to the annular recess.

6. The structure of claim 1, wherein the fixing portion is a frame and has a receiving opening, and the sound receiving unit is received in the receiving opening.

7. The structure of the noise-canceling in-ear canal type earphone according to claim 6, further comprising a flexible printed circuit electrically connecting the sound receiving component and the sound generating component and having a carrying portion, the carrying portion carrying the sound receiving component and being located between the sound receiving component and the first sound outlet, the carrying portion having a sound receiving hole for exposing the sound receiving component.

8. The structure of claim 7, wherein the flexible printed circuit further comprises an extension portion extending from the carrying portion and passing through one side of the fixing body of the fixing base to enter the receiving housing.

9. The structure of claim 7, wherein the frame has a positioning protrusion, and one side of the carrying portion has a positioning recess corresponding to the positioning protrusion.

10. The structure of claim 1, wherein the sound generating assembly has a sound generating axis along a direction parallel to the front cavity channel, the sound receiving assembly has a sound receiving axis, the sound generating axis does not overlap the sound receiving axis, the sound receiving axis and the center axis of the front cavity channel are coplanar with an axial plane, and the axial plane symmetrically divides the cross section of the front cavity channel.

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