TWI770815B - Noise-cancelling ear canal headphone structure - Google Patents

Abstract

The present invention provides an ear canal type earphone structure capable of noise cancellation, which comprises an accommodating shell, a fixing seat, a sound-emitting element, a sound-receiving element and an ear pad. The accommodating shell has a first sound output port. The fixing base has a second sound output port and a fixing portion located between the first sound output port and the second sound output port. The sounding element is assembled on the fixing seat. The second sound output port is located between the sound generating element and the fixing portion. The sound pickup element is fixed on the fixing portion. The sound-receiving element is electrically connected to the sound-emitting element. The ear pad is assembled on the accommodating shell and has a cavity channel connected to the front of the first sound output port. The sound-emitting element and the sound-receiving element respectively have a sound-emitting surface and a sound-receiving surface facing the front channel.

Description

Noise-cancelling ear canal headphone structure

The present invention provides a noise-cancelling ear canal headphone structure, especially a noise-cancelling ear canal headphone structure that can collect ambient noise in front of a sound-emitting element.

If a general ear canal earphone has a noise canceling function, the microphone for sound collection is usually installed in the back cavity of the earphone, that is, outside the earphone, and the microphone directly picks up the external ambient noise.

Although the microphones in the prior art are easy to assemble, they are not very effective in picking up noises introduced into the ear canal. It is also difficult for the current ear canal earphones to change the microphone to be installed in the front sound cavity of the earphone, because the space of the front sound cavity is small and it is difficult to accommodate the microphone and its lines.

The inventor has exhausted his mind and research, and then developed an ear canal headphone structure that can eliminate noise. the goal of.

The present invention provides a noise-cancelling ear canal type earphone structure, which comprises an accommodating shell, a fixing seat, a sound-emitting element, a sound-receiving element, a flexible circuit board and an ear pad. The accommodating shell has a first sound output port. The fixing base has a fixing body and a fixing portion, the fixing body is disposed in the accommodating shell 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 in between the first sound output port and the second sound output port. The sound element is assembled on the fixed body of the fixed seat and is exposed on the second sound output port. The second sound output port is located between the sound generating element and the fixing portion. The sound pickup element is fixed on the fixed portion, and the sound pickup element is electrically connected to the sound emission element. The ear pad is assembled on the accommodating shell and has a front cavity channel connected to the first sound output port. The sound-emitting element has a sound-emitting surface, the sound-receiving element has a sound-receiving surface, and both the sound-emitting surface and the sound-receiving surface face the front channel.

In one embodiment, the accommodating 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, and the fixing body of the fixing seat extends out of a plurality of first set parts , each of the first assembly portions is protruded from each of the openings to be assembled on the ear pad.

In one embodiment, the ear pad has an ear pad hard part, the ear pad hard part is provided with a plurality of second set parts corresponding to the first set parts, and each of the first set parts is composed of each The openings protrude to be assembled on each of the second assembly portions.

In one embodiment, each of the first set portions is an elastic hook, the hard portion of the ear pad includes a bottom wall, connected to and surrounds a side wall of the bottom wall, and the bottom wall has a corresponding first sound output port. an opening, the side wall is sleeved on the outer side of the channel, and each of the second set parts is set in a groove of the side wall.

In one embodiment, the accommodating shell has an annular recess around the channel for accommodating the side wall of the hard part of the ear pad, and the fixing body of the fixing seat is assembled in the first set of parts on the The second set portions are abutted against the inner sidewall of the accommodating housing opposite to the annular recessed portion.

In one embodiment, the fixing portion is a frame and has an accommodating opening, and the sound collecting element is accommodated in the accommodating opening.

In one embodiment, the ear canal headphone structure further includes a flexible circuit board, the flexible circuit board is electrically connected to the sound-receiving element and the sound-emitting element and has a bearing portion, and the bearing portion bears the sound-emitting element. The sound pickup element is located between the sound pickup element and the first sound output port, and the bearing portion has a sound pickup hole to expose the sound pickup element.

In one embodiment, the flexible circuit board further has an extension portion, and the extension portion extends from the bearing portion and bypasses one side of the fixing body of the fixing seat to enter the interior of the accommodating housing.

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

In one embodiment, along a direction parallel to the front channel, the sound-emitting element has a sound-emitting axis, the sound-receiving element has a sound-receiving axis, the sound-emitting axis does not overlap with the sound-receiving axis, and the sound-receiving axis is the same as the sound-receiving axis. The central axis of the front channel is coplanar on an axial plane, and the axis can symmetrically and equally divide the section of the front channel.

Thereby, the noise-cancelling ear canal headphone structure of the present invention can arrange the sound-receiving element between the sound-emitting element and the front-cavity channel to increase the amount of noise picked up into the ear canal, and at the same time, the sound-receiving element is fixed on the fixed seat by the sound-receiving element. On the fixed part, a sound collecting element can be arranged in the limited space of the accommodating case close to the front channel.

1: Noise-cancelling ear canal headphone structure

10: accommodating shell

100: The first sound output port

101: Front housing

102: Rear shell

103: Channel

104: Opening

105: Annular recess

11: Fixed seat

110: Fixed body

111: Fixed part

112: The second sound output port

113: accommodating port

114: Positioning convex part

115: The first group set up department

12: Sound components

120: Voice Surface

13: Radio components

130: Radio side

14: Flexible circuit board

141: Bearing Department

142: Radio hole

143: Extensions

144: Positioning recess

15: Ear pads

150: front channel

151: Ear pad hard part

152: Second group set up

153: Bottom Wall

154: Sidewall

155: Opening

156: First Surrounding Department

157: Second Surround

158: Soft part of ear pad

F: direction

S1: vocal axis

S2: Radio axis

S3: Center axis

P1: Axial plane

P2: Cut face

FIG. 1 is a partial cross-sectional schematic diagram 1 of the structure of a noise-cancelling ear canal earphone according to a specific embodiment of the present invention.

FIG. 2 is a second partial cross-sectional schematic diagram of the structure of the ear canal earphone with noise cancellation according to a specific embodiment of the present invention.

[FIG. 3] It is the first appearance diagram of the structure of the ear canal earphone with noise cancellation according to the specific embodiment of the present invention.

[Fig. 4] is a second appearance schematic diagram of the structure of the ear canal earphone with noise cancellation according to a specific embodiment of the present invention.

[Fig. 5] is a schematic diagram 1 of the assembly of the sound-emitting element, the fixing seat and the flexible circuit board of the noise-cancelling ear canal earphone structure according to the specific embodiment of the present invention.

FIG. 6 is a second schematic diagram of the assembly of the sound-generating element, the fixing seat and the flexible circuit board of the noise-cancelling ear canal headphone structure according to the specific embodiment of the present invention.

FIG. 7 is a schematic diagram 1 of the assembly of the sound-generating element, the fixing seat, the flexible circuit board and the accommodating shell of the noise-cancelling ear canal headphone structure according to the specific embodiment of the present invention.

FIG. 8 is a second schematic diagram of the assembly of the sound-emitting element, the fixing seat, the flexible circuit board and the accommodating shell of the noise-cancelling ear canal headphone structure according to the specific embodiment of the present invention.

FIG. 9 is a schematic diagram 3 of the assembly of the sound-emitting element, the fixing seat, the flexible circuit board and the accommodating shell of the noise-cancelling ear canal headphone structure according to the specific embodiment of the present invention.

FIG. 10 is a fourth schematic diagram of the assembly of the sound-emitting element, the fixing seat, the flexible circuit board and the accommodating shell of the noise-cancelling ear canal headphone structure according to the specific embodiment of the present invention.

[Fig. 11] is a schematic diagram 1 of the assembly of the accommodating shell, the fixing seat and the ear cushion member of the noise-cancelling ear canal earphone structure according to the specific embodiment of the present invention.

FIG. 12 is a second schematic diagram of the assembly of the accommodating casing, the fixing seat and the ear pad of the noise-cancelling ear canal type earphone structure according to the specific embodiment of the present invention.

Fig. 13 is a schematic diagram 1 of the relative positions of the sound-emitting element, the sound-receiving element and the ear pad of the noise-cancelling ear canal earphone structure according to the specific embodiment of the present invention.

FIG. 14 is a second schematic diagram showing the relative positions of the sound-emitting element, the sound-receiving element and the ear pad of the noise-cancelling ear canal headphone structure according to the specific embodiment of the present invention.

Fig. 15 is a schematic diagram 3 of the relative positions of the sound-emitting element, the sound-receiving element, and the ear pad of the noise-cancelling ear canal headphone structure according to the specific embodiment of the present invention.

FIG. 16 is a schematic diagram 4 of the relative positions of the sound-emitting element, the sound-receiving element, and the ear pad of the noise-cancelling ear canal headphone structure according to the specific embodiment of the present invention.

In order to fully understand the purpose, features and effects of the present invention, the present invention is described in detail by the following specific embodiments and the accompanying drawings. The description is as follows: A first aspect of the invention provides a noise-cancelling ear canal headphone structure 1 , which includes an accommodating housing 10 , a fixing seat 11 , a sound-emitting element 12 , a sound-receiving element 13 , and an ear pad 15 . The accommodating housing 10 has a first sound output port 100 . The ear canal type earphone structure 1 with noise cancellation is made by inserting the ear pad 15 into the ear canal (not shown) of a human body in the front. The fixing base 11 has a fixing body 110 and a fixing portion 111 . The fixing body 110 is disposed in the accommodating 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 fixed body 110 and located between the first sound output port 100 and the second sound output port 112 . The sounding element 12 is assembled on the fixing body 110 of the fixing base 11 and exposed at the second sound output port 112 . The second sound output port 112 is located between the sound element 12 and the fixing portion 111 . The sound pickup element 13 is fixed on the fixing portion 111 , and the sound pickup element 13 is electrically connected to the sound emission element 12 . The ear pad 15 is assembled on the accommodating housing 10 and has a front channel 150 connected to the first sound output port 100 . The sound-emitting element 12 has a sound-emitting surface 120 , and the sound-receiving element 13 has a sound-receiving surface 130 . Both the sound-emitting surface 120 and the sound-receiving surface 130 face the front channel 150 . The sound-generating element 12 can be a loudspeaker that drives the diaphragm to vibrate by various transduction principles. The sound pickup element 13 can be a microphone.

Thereby, the noise-cancelling ear canal type earphone structure 1 of the present invention can dispose the sound-receiving element 13 between the sound-generating element 12 and the front-cavity channel 150 to increase the amount of noise that enters the ear canal, and at the same time, by receiving The sound element 13 is fixed on the fixing part 111 of the fixing base 11 , and the sound pickup element 13 can be arranged in a limited space of the housing case 10 close to the front channel 150 .

As shown in FIG. 1 and FIG. 2 , the accommodating housing 10 may include a front casing 101 and a rear casing 102 , which are assembled together. The front casing 101 has the first sound output port 100 and is used for assembling the fixing base 11 . The rear casing 102 is used for accommodating active and passive electronic components such as a battery, a signal processing chip, and an audio amplifying chip, which are not shown.

As shown in FIG. 1 , FIG. 2 , FIG. 5 and FIG. 6 , in one embodiment, the fixing portion 111 can be a frame and has an accommodating opening 113 , and the sound-receiving element 13 is accommodated in the accommodating opening. 113, but not limited to this, the fixing portion 111 may also be of other forms. In addition, the noise-cancelling ear canal headphone structure 1 of the present invention may further include a flexible circuit board 14 , the flexible circuit board 14 has a bearing portion 141 , and the bearing portion 141 supports the sound pickup element 13 and is located in the sound pickup element Between 13 and the first sound output port 100 , the carrying portion 141 has a sound receiving hole 142 to expose the sound receiving element 13 . The fixing portion 111 of the frame can have a positioning convex portion 114, and one side of the bearing portion 141 has a positioning concave portion 144 corresponding to the positioning convex portion 114. When the positioning concave portion 144 is positioned on the positioning convex portion 114, the sound pickup The element 13 also enters the accommodating opening 113 at the same time, so as to improve the stability of the assembly. The flexible circuit board 14 may further have an extension portion 143 , and the extension portion 143 extends from the bearing portion 141 and bypasses one side of the fixing body 110 of the fixing base 11 to enter the interior of the accommodating housing 10 , that is, enter the The rear casing 102 is electrically connected to active and passive electronic components such as a battery, a signal processing chip, and an audio amplifier chip. The flexible circuit board 14 can transmit the sound signal and the picked-up noise signal to the signal processing chip for processing.

As shown in FIG. 5 and FIG. 6 , in one embodiment, the fixing body 110 of the fixing base 11 can be looped around the outside of the sounding element 12 . For example, between the sounding element 12 and the fixed body 110 may be provided Corresponding concave-convex structures (not shown), or the fixing body 110 may have elasticity to tightly fit the sounding element 12 .

As shown in FIG. 7 to FIG. 12 , in one embodiment, the housing 101 may have a channel 103 before the accommodating housing 10 , the first sound output port 100 is located at the end of the channel 103 , and the channels 103 are arranged side by side. There are a plurality of openings 104 . A plurality of first assembling portions 115 extend from the fixing body 110 of the fixing base 11 , and each of the first assembling portions 115 protrudes from each of the openings 104 to be assembled on the ear pad 15 . In addition, the ear pad 15 may have an ear pad hard part 151 , the ear pad hard part 151 is provided with a plurality of second set parts 152 corresponding to the first set parts 115 , and each of the first set parts 115 It protrudes from each of the openings 104 to be assembled on each of the second assembly portions 152 . Each of the first set 115 parts can be elastic hooks. The hard part 151 of the ear pad includes a bottom wall 153 which is connected to and surrounds a side wall 154 of the bottom wall 153 , and the bottom wall 153 has a corresponding first sound output port. An opening 155 of 100, the side wall 154 is sleeved on the outside of the channel 103, each of the second set parts 152 is a groove set on the side wall 154, the elastic hook of the fixing seat 11 can be snapped on the ear The groove of the gasket 15. But it is not limited to this, and the first assembling portion 115 and the second assembling portion 152 may also be in other forms. The shape of the fixing body 110 of the fixing base 11 can conform to the front shell 101 of the housing 10 so as to closely fit the front shell 101 . As described above, the ear canal earphone structure 1 capable of noise cancellation of the present invention can make the ear cushion member 15 detachable and detachable repeatedly through the elastic hook of the fixing seat 11 . In addition, because the elastic hooks of the fixing base 11 are elastic, the ear pads 15 can be stably buckled on the fixing base 11 , and the ear pads 15 are durable when the ear pads 15 are repeatedly disassembled and assembled.

As shown in FIG. 11 and FIG. 12 , in one embodiment, the ear pad 15 may further include an ear pad soft part 158 , and the ear pad soft part 158 has a first surrounding part 156 and a second surrounding part 157 . The first surrounding part 156 surrounds the front channel 150 , and one side of the first surrounding part 156 is connected to the bottom wall 153 and the side wall 154 of the hard part 151 of the ear pad, such as the soft part 158 of the ear pad The hard part 151 of the ear pad can be integrally formed by injection molding, the soft part 158 of the ear pad is made of soft material, and the hard part 151 of the ear pad is made of hard material. The fixing base 11 and the hard part 151 of the ear pad can both be made of hard material, so that the first assembly parts 115 are stably assembled on the second assembly parts 152 . The second surrounding portion 157 is folded over and surrounds the outer side of the first surrounding portion 156 . The accommodating housing 10 has an annular recess 105 around the channel 103 for accommodating the structure in which the side wall 154 of the hard part 151 of the ear pad is connected with the soft part 158 of the ear pad, so as to ensure that the ear pad 15 can be firmly combined with the The housing 10 is accommodated and is not easy to fall off. In addition, the fixing body 110 of the fixing base 11 is assembled on the second set parts 152 by the first set parts 115 and abuts against the inner side wall of the accommodating shell 10 opposite to the annular recess 105 , making the overall structure compact and stable. When the ear pads 15 are assembled on the fixing base 11 , the ear pads 15 are also fixed on the accommodating housing 10 at the same time, and the ear pads 15 and the fixing base 11 do not need to be respectively fixed on the accommodating housing 10 to simplify the assembly process .

As shown in FIGS. 13 to 16 , in an embodiment, along a direction F parallel to the front channel 150 , the sound-emitting element 12 has a sound-emitting axis S1 , and the sound-receiving element 13 has a sound-receiving axis S2 , the sound collection axis S2 can pass through the sound collection hole 142 . The sound-emitting axis S1 does not overlap the sound-receiving axis S2, but the sound-receiving axis S2 and the central axis S3 (dashed line in FIG. 13 ) of the front channel 150 are coplanar on an axial plane P1, and the axial plane P1 can The sections of the front channel 150 are symmetrically divided. As for the sounding axis S1, it can be located on a tangent plane P2 parallel to the axial plane P1, so as to clearly show that the sounding axis S1 does not overlap the sound collecting axis S2. The advantage of the sound-emitting axis S1 not overlapping the sound-receiving axis S2 is that the sound output by the sound-emitting element 12 can be prevented from being blocked by the sound-receiving element 13 to cause reflection and diffraction, resulting in the change of sound frequency and affecting the sound quality. Although the sound collection axis S2 does not overlap the central axis S3, it is still facing the front channel 150 because it is passed by the axis surface P1, so that the noise entering the front channel 150 can be accurately picked up . In this embodiment, the front-cavity channel 150 is mainly aligned with the sound-receiving element 13 instead of the sound-emitting element 12, so as to make sound collection more accurate; however, the sound-receiving axis S2 of the sound-receiving element 13 is slightly deviated from the front-cavity sound The central axis S3 of the channel 150 provides a space for the sound generating element 12 to emit sound, thereby achieving a balance between sound quality and sound collection effect.

The present invention has been disclosed above with preferred embodiments, but those skilled in the art should understand that the embodiments are only used to describe the present invention, and should not be construed as limiting the scope of the present invention. It should be noted that all changes and substitutions equivalent to this embodiment should be considered to be included within the scope of the present invention. Therefore, the protection scope of the present invention should be defined by the scope of the patent application.

1: Noise-cancelling ear canal headphone structure

10: accommodating shell

100: The first sound output port

101: Front housing

102: Rear shell

11: Fixed seat

110: Fixed body

111: Fixed part

112: The second sound output port

113: accommodating port

115: The first group set up department

12: Sound components

13: Radio components

14: Flexible circuit board

15: Ear pads

150: front channel

152: Second group set up

Claims (9)

A noise-cancelling ear canal headphone structure, comprising: an accommodating shell having a first sound output port; a fixing seat having a fixing body and a fixing part, the fixing body is arranged in the accommodating shell The body has a second sound output port corresponding to the first sound output port, the fixed part is connected to the fixed body and is located between the first sound output port and the second sound output port; The fixed body arranged on the fixed seat is exposed to the second sound output port, and the second sound output port is located between the sound-emitting element and the fixed portion; a sound-receiving element is fixed on the fixed portion, and the sound-receiving element is electrically connecting the sound-emitting element; and an ear pad, assembled on the accommodating shell and having a front-cavity channel connected to the first sound output port; wherein, the sound-emitting element has a sound-emitting surface, and the sound-receiving element has a a sound-receiving surface, the sound-emitting surface and the sound-receiving surface both face the front channel, 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 The fixing body of the fixing seat extends out of a plurality of first assembling portions, and each of the first assembling portions protrudes from each of the openings to be assembled on the ear pad. The noise-cancelling ear canal headphone structure according to claim 1, wherein the ear pad has a hard part of the ear pad, and the hard part of the ear pad is provided with complex parts corresponding to the first set of parts. The number of the second set parts, each of the first set parts is protruded from each of the openings so as to be set on each of the second set parts. The noise-cancelling ear canal headphone structure as claimed in claim 2, wherein each of the first set portions is an elastic hook, and the hard portion of the ear pad includes a bottom wall connected to and surrounding a side wall of the bottom wall , the bottom wall has an opening corresponding to the first sound output port, the side wall is sleeved on the outer side of the channel, and each of the second set parts is set in a groove of the side wall. The noise-cancelling earphone structure of claim 3, wherein the accommodating shell has an annular recess around the channel for accommodating the side wall of the hard part of the ear pad, and the fixing body of the fixing seat is The first set parts are assembled on the second set parts, and are abutted against the inner side wall of the accommodating shell opposite to the annular concave part. The ear canal earphone structure capable of noise cancellation according to claim 1, wherein the fixing portion is a frame and has an accommodating opening, and the sound collecting element is accommodated in the accommodating opening. The noise-cancelling ear canal headphone structure as claimed in claim 5, further comprising a flexible circuit board, the flexible circuit board is electrically connected to the sound-receiving element and the sound-emitting element and has a bearing portion, and the bearing portion carries the sound-emitting element. The sound pickup element is located between the sound pickup element and the first sound output port, and the bearing portion has a sound pickup hole to expose the sound pickup element. The noise-cancelling ear canal headphone structure as claimed in claim 6, wherein the flexible circuit board further has an extension portion, and the extension portion extends from the bearing portion and bypasses one side of the fixing body of the fixing seat. into the interior of the accommodating housing. The noise-cancelling ear canal headphone structure as claimed in claim 6, wherein the frame has a positioning convex portion, and one side of the bearing portion has a positioning concave portion corresponding to the positioning convex portion. The noise-cancelling ear canal headphone structure according to claim 1, wherein along a direction parallel to the front cavity channel, the sound-emitting element has a sound-emitting axis, the sound-receiving element has a sound-receiving axis, and the sound-emitting axis Not overlapping with the sound collection axis, the sound collection axis and the central axis of the front cavity channel are coplanar on an axial plane, and the axial plane symmetrically divides the section of the front cavity sound channel.

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