TWM631775U - Earphone device - Google Patents

Abstract

The utility model provides an earphone device which includes: a cover body, a sound chamber shell and a speaker unit. The sound chamber shell is combined with the cover body to form a sound chamber. The speaker unit is disposed in the sound chamber, and the sound chamber has an air channel that includes a bent portion.

Description

headphone device

This creation is about an earphone device, especially a headphone device.

The types of earphone devices currently sold on the market include earphones, earphones, and headphone. Compared with earbuds and ear canal earphones, since the earphones can completely cover the ears and are more comfortable to wear, earphone devices that need to be worn for a long time, such as gaming earphones, monitoring earphones or Music headphones, etc. are mostly made in the form of head-mounted.

In the prior art, as shown in (i) of FIG. 1 , the speaker unit 20 of the earphone device 2 is installed in a closed sound chamber C2 . In order to allow users who like heavy bass to hear more low-pitched sounds when using headphones, many headphones have holes in the sound chamber of the speaker unit, as shown in Figure 1 (ii) As shown, the speaker unit 30 of the earphone device 3 is installed in the sound chamber C3, and the sound chamber C3 has a straight-through gas channel P3 that communicates with the external environment. In this way, the air flow of the external environment can be introduced into the sound chamber C3 through the straight-through air passage P3 for exchange of air flow. Through the exchange of air flow, the stroke of the diaphragm of the speaker unit 30 can be increased, so that the speaker unit 30 can generate more low-frequency response, so that the user can obtain more low-frequency sound pressure from the headphone device 3 .

However, although the gas channel P3 on the sound chamber C3 is helpful for the introduction and exchange of the external air flow, it also allows the sound or noise in the external environment to enter the headphone device 3 along the gas channel P3, causing the user to listen to The sound effect of heavy bass will also be affected and interfered by more external noises, and a good listening experience cannot be obtained.

Therefore, how to provide an earphone device with a low frequency response effect, which can effectively block the noise of the external environment, is a technical subject to be solved by the present creation.

The main purpose of this creation is to provide an earphone device with a low frequency response effect, and the earphone device also has a good passive noise reduction function.

In order to achieve the aforementioned purpose, the present invention provides an earphone device, including: The cover body has a plurality of sound holes; The sound chamber shell, combined with the inner surface of the cover to form the sound chamber, includes: bottom; the side wall part is arranged on the bottom in a surrounding manner; The arc-shaped base is arranged at the junction of the bottom and the side wall, including: The groove has opposite first ends and second ends, the first end is located on the side wall part, the second end is located on the bottom, and there is a bending part between the first and the second ends; The first vent hole is arranged on the bottom surface of the groove and is close to the first end; an arc-shaped cover, combined with the arc-shaped base to close the groove, so that the groove forms a gas channel, and a second vent hole is formed at the second end; and The speaker unit is arranged in the sound chamber and has a sound emitting end, and the sound emitting end faces the sound outlet.

In the above preferred embodiment, the outer surface of the cover body has a concave portion and a convex portion, the convex portion is disposed in the center of the concave portion, and the sound outlet hole is disposed on the convex portion.

In the above preferred embodiment, the inner surface of the cover body has an accommodating groove, the accommodating groove corresponds to the protrusion, and the speaker unit is installed in the accommodating groove.

In the above-mentioned preferred embodiment, it includes a casing, the casing is used to cover the sound cavity casing and is combined with the cover body, and the casing has an external opening corresponding to the first vent hole.

In the above preferred embodiment, the two sides of the groove are respectively provided with flange structures arranged in a stepped manner, the height of the flange structure is higher than the bottom surface of the groove, and the arc-shaped cover plate can be closely connected with the flange structure and close the first groove. one end.

The beneficial effect of the present invention is that the sound chamber shell of the provided earphone device has a sound chamber and an air channel communicated with the sound chamber, so that the airflow of the external environment can be introduced into the sound chamber through the gas channel for airflow. The exchange of the speaker unit makes the diaphragm of the speaker unit oscillate more, so that the sound emitting end of the speaker unit generates more low-frequency sound pressure. On the other hand, when the sound or noise of the external environment passes through the bending part of the gas channel, the sound and noise will be absorbed by the bending part and gradually attenuated, which can effectively isolate the external noise and allow the user to obtain a good listening experience. .

The advantages and features of the present invention, and the methods for achieving the same, will be more readily understood with reference to the more detailed description of the exemplary embodiments and the accompanying drawings. However, the present creations may be implemented in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those of ordinary skill in the art.

First, please refer to Figure 2 and Figure 3. Figure 2 shows the frequency response measurement system for earphones; Figure 3 shows the passive sound insulation and noise reduction measurement system for headphones. In FIG. 2 , the headphone frequency response measurement system 9 provided by this creation includes: an audio analysis device 90, a sound card 91, a power amplifier 92, a microphone preamplifier 93, a HATS radio microphone 94, an earphone T to be tested, and an anechoic chamber. R. The audio analysis device 90 is electrically connected to the sound card 91; the sound card 91 is electrically connected to the power amplifier 92 and the microphone preamplifier 93 respectively; and the power amplifier 92 and the microphone preamplifier 93 are respectively electrically connected to the to-be Test earphone T and HATS radio microphone 94.

The earphone T to be tested and the HATS radio microphone 94 are both placed in the anechoic room R, and the HATS radio microphone 94 is arranged before the sound transmitting end of the earphone T to be tested. The anechoic chamber R is used to isolate the interference of ambient noise, so as to improve the detection accuracy of the frequency response measurement system 9 of the earphone speaker.

When the frequency response detection is performed, first, the audio analysis device 90 generates a test signal through the sound card 91 and transmits it to the power amplifier 92 . After receiving the test signal, the power amplifier 92 drives the earphone T to be tested to generate detection sound waves. Next, the detected sound waves generated by the earphone T to be tested are received by the HATS radio microphone 94 and sent back to the audio analysis device 90 through the microphone preamplifier 93 for analysis.

In FIG. 3 , the passive sound insulation and noise reduction measurement system 8 provided by this creation includes: an audio analysis device 80 , a sound card 81 , a power amplifier 82 , a microphone preamplifier 83 , a HATS radio microphone 84 , and a detection speaker unit 85 , the earphone T to be tested and the anechoic room R. The audio analysis device 80 is electrically connected to the sound card 81; the sound card 81 is electrically connected to the power amplifier 82 and the microphone preamplifier 83 respectively; and the power amplifier 82 and the microphone preamplifier 83 are respectively electrically connected to the detection The speaker unit 85 and the HATS microphone 84 are used.

The HATS radio microphone 84 , the detection speaker unit 85 and the earphone T to be tested are all placed in the anechoic room R. Among them, the detection speaker unit 85 is arranged at a distance of 50 cm from the earphone T to be tested; The anechoic room R is used to isolate the interference of ambient noise, so as to improve the detection accuracy of the passive sound insulation and noise reduction measurement system 8 of the headset.

When performing passive sound insulation and noise reduction detection, first, the audio analysis device 80 generates a test signal through the sound card 81 and transmits it to the power amplifier 82 . After receiving the test signal, the power amplifier 82 drives the detection speaker unit 85 to emit detection sound waves toward the earphone T to be tested, so as to simulate the sound or noise in the external environment. Next, the detected sound wave will pass through the earphone T under test, and the detected sound wave passing through the earphone T under test will be received by the HATS microphone 84, and then sent back to the audio analysis device 80 through the microphone preamplifier 83 for analysis.

Please refer to FIG. 4 . FIG. 4 is a schematic diagram of the earphone device provided in this creation. The speaker unit 10 of the earphone device 1 is installed in the sound chamber C1. The sound chamber C1 has a gas channel P1 communicating with the external environment, and the gas channel P1 has a bent portion B.

Please refer to FIG. 5A . FIG. 5A is a frequency response measurement graph. During the frequency response detection, the tester will place the earphone devices 1 (as shown in Figure 4), 2 and 3 (as shown in Figure 1) on the position of the earphone T (as shown in Figure 2) to be tested, and The earphone devices 1, 2 and 3 are electrically connected to the power amplifier 92, so that the power amplifier 92 can respectively drive the earphone devices 1, 2 and 3 to generate detection sound waves.

In FIG. 5A, the X axis represents the sound frequency (unit: Hz) of the detected sound waves received by the HATS microphone 94 from the speaker units 10, 20 and 30 of the earphone devices 1, 2 and 3; and the Y axis represents the HATS radio The microphone 94 receives the sound intensity (unit: dB) of the detected sound wave from the speaker units 10 , 20 and 30 of the earphone devices 1 , 2 and 3 . It can be clearly seen from the graph of FIG. 5A that in the low frequency range from 20 Hz to 200 Hz, the performance of the sound intensity of the headphone devices 1 and 3 is better than that of the headphone device 2 with the closed sound chamber C2, and the headphone device 1 The performance of the sound intensity is better than that of the headphone device 3 , or similar to the performance of the sound intensity of the headphone device 3 .

It can be seen from the foregoing that, compared with the straight-through gas channel P3 of the earphone device 3, the gas channel P1 with the bent portion B in the earphone device 1 can also effectively introduce the airflow of the external environment into the sound chamber C1, so that the sound can be raised. The diaphragm of the unit 10 oscillates more, so that the sound emitting end of the speaker unit 10 generates more low-frequency sound pressure.

Please refer to FIG. 5B . FIG. 5B is a graph of passive sound insulation and anti-noise attenuation. When conducting passive sound insulation and anti-noise attenuation test, the tester will place the headphone devices 1 (as shown in Figure 4), 2 and 3 (as shown in Figure 1) on the earphone T (as shown in Figure 3) to be tested. The power amplifier 82 drives the detection speaker unit 85, so that the detection speaker unit 85 emits detection sound waves to the earphone devices 1, 2 and 3 to simulate the sound or noise in the external environment.

In FIG. 5B, the X-axis represents the sound frequency (unit: Hz) of the detected sound waves received by the HATS radio microphone 84 through the earphone devices 1, 2 and 3; and the Y-axis represents the sound frequency received by the HATS radio microphone 84 through the earphone device. Sound attenuation intensity (unit: dB) of the detected sound waves of 1, 2 and 3. In FIG. 5B, it can be clearly seen from the graph of the section from the low frequency 100Hz to the high frequency 2000Hz that after the passive noise reduction of the earphone device 1 (the gas channel P1 with the bending part B), the sound intensity of the detected sound wave is detected. The attenuation degree of the earphone device 3 is significantly greater than that of the earphone device 3 (the straight-through gas channel P3), and the noise reduction performance of the earphone device 1 is very close to that of the earphone device 2 (closed sound chamber C2 without any gas channel).

From the experimental data of the frequency response measurement curve (FIG. 5A) and the passive sound insulation and anti-noise attenuation curve (FIG. 5B), it can be known that the speaker unit of the earphone device 1 (the gas channel P1 with the bending part B) is at low frequencies. The performance of the sound intensity under the segment is similar to that of the earphone device 3 (the straight-through gas channel P3 ), but the passive noise reduction effect of the earphone device 1 is significantly better than that of the earphone device 3 .

Please refer to FIGS. 6A , 6B and 6C. 6A is a schematic perspective view of the earphone device provided by the author; FIG. 6B is an exploded perspective view of the earphone device provided by the author from a perspective; FIG. 6C is an exploded perspective view of the earphone device provided by the author from another perspective.

The earphone device 1 includes: a speaker unit 10 , a cover 11 , a sound cavity shell 12 and a shell 13 . The speaker unit 10 has a sound emitting end 101 . The outer surface of the cover body 11 has a concave portion 111 and a convex portion 112 having a bowl-shaped section. The convex portion 112 is disposed in the center of the concave portion 111 , and the convex portion 112 is provided with a plurality of sound outlet holes 1121 penetrating through, and the concave portion 111 can be used for setting earmuffs or a cushion structure (not shown in the figure) .

On the other hand, the inner surface of the cover body 11 is provided with an accommodating groove 113 (as shown in FIG. 5C ), and the position of the accommodating groove 113 corresponds to the convex portion 112 on the outer surface, so that the sound outlet hole 1121 will be exposed on the bottom surface of the accommodating groove 113 . The speaker unit 10 is installed in the accommodating slot 113, and the sound emitting end 101 of the speaker unit 10 faces the sound outlet 1121 on the bottom surface of the accommodating slot 113, so that the sound waves generated by the sound emitting end 101 can pass through The sound hole 1121 is transmitted to the outside.

The sound cavity shell 12 includes: a bottom portion 121 , a side wall portion 122 , an arc-shaped base 123 , a first ventilation hole 124 and an arc-shaped cover plate 125 . The side wall portion 122 is disposed on the bottom portion 121 in a surrounding manner; and the arc-shaped base 123 is disposed at the junction of the bottom portion 121 and the side wall portion 122 . The arc-shaped base 123 has a groove 1231 , the groove 1231 has a first end 12311 and a second end 12312 opposite to each other, and a bending portion B is formed between the first end 12311 and the second end 12312 . In this embodiment, the first end 12311 is located above the side wall portion 122 ; the second end 12312 is located above the bottom portion 121 . In addition, two sides of the groove 1231 respectively have flange structures 1232 arranged in a stepped manner, and the height of the flange structures 1232 is higher than the bottom surface of the groove 1231 .

The first ventilation hole 124 is disposed through the bottom surface of the groove 1231 and is close to the first end 12311 of the groove 1231 . The arc-shaped cover 125 is used for combining with the arc-shaped base 123 to thereby close the groove 1231 . In this embodiment, when the arc-shaped cover plate 125 is installed on the arc-shaped base 123 , the side edge of the arc-shaped cover plate 125 will be in close contact with the flange structure 1232 and close the first part of the groove 1231 . 12311 at one end.

The outer shell 13 is used to cover the sound cavity shell 12 and can be combined with the cover body 11 , and the outer shell 13 has an external opening 131 corresponding to the first vent hole 124 of the sound cavity shell 12 . On the other hand, the housing 13 can also be used to connect the bracket structure of the headset (as shown in the figure).

Please refer to FIG. 7 . FIG. 7 is a partial cross-sectional view of the earphone device provided by the present invention. In FIG. 7 , the sound chamber shell 12 is combined with the inner surface of the cover body 11 to form a sound chamber C1 . After the arc-shaped cover plate 125 and the flange structure 1232 of the arc-shaped base 123 are in close contact and close the first end 12311 , a gas channel P1 with a bent portion B can be formed at the groove 1231 . On the other hand, since the arc-shaped cover plate 125 is not in close contact with the second end 12312 of the arc-shaped base 123 , the second vent hole O of the gas channel P1 can be formed at the second end 12312 .

Proceed to Figure 7. When the casing 13 is combined with the cover 11, the external opening 131 will be opposite to the first vent hole 124, so that the airflow in the external environment can pass through the external opening 131, the first vent hole 124, the gas channel P1 and the second vent hole 124. The air hole O is introduced into the sound chamber C1, so that the diaphragm of the speaker unit 10 oscillates more, so that the sound emitting end 101 of the speaker unit 10 generates more low-frequency sound pressure. On the other hand, when the sound or noise in the external environment passes through the gas channel P1, the bending part B will absorb part of the sound and noise, so that the sound intensity of the sound and the noise is gradually attenuated, and the noise of the external environment can be effectively isolated.

Compared with the prior art, the sound chamber shell of the earphone device provided by the present invention has a sound chamber and a gas channel communicated with the sound chamber, so that the air flow of the external environment can be introduced into the sound chamber through the gas channel to prevent The exchange of air flow makes the diaphragm of the speaker unit oscillate more, so that the sound emitting end of the speaker unit generates more low-frequency sound pressure. On the other hand, when the external sound or noise passes through the bending part of the gas channel, the sound and noise will be absorbed by the bending part and gradually attenuated, which can effectively isolate the external noise and allow the user to obtain a good listening experience; Therefore, this work is a work of great industrial value.

This creation can be modified in various ways by people who are familiar with the craftsmanship, but all of them are not out of the scope of the appended patent application.

B: Bending part C1, C2, C3: sound chamber P1, P3: gas channel O: Second vent R: anechoic room T: Headphones to be tested 1, 2, 3: Headphone device 10, 20, 30: Speaker unit 101: Sound transmitter 11: Cover 111: Recess 112: Raised part 1121: Sound hole 12: Sound cavity shell 121: Bottom 122: side wall 123: Curved base 1231: Groove 12311: First end 12312: Second end 1232: Flange structure 124: First vent 125: Arc cover 113: accommodating slot 13: Shell 131: External opening 8: Headphone passive sound insulation and noise reduction measurement system 80, 90: Audio analysis device 81, 91: sound card 82, 92: power amplifier 83, 93: Mic Preamps 84, 94: HATS radio microphone 85: Speaker unit for detection 9: Headphone Frequency Response Measurement System

FIG. 1 is a schematic diagram of a conventional earphone device;

Figure 2: It is the frequency response measurement system of the earphone;

Figure 3: It is a passive sound insulation and noise reduction measurement system for headphones;

Figure 4: It is a schematic diagram of the headphone device provided by this creation;

Figure 5A: is a frequency response measurement curve;

Figure 5B is a graph of passive sound insulation and anti-noise attenuation;

FIG. 6A: is a three-dimensional schematic diagram of the earphone device provided by this creation;

FIG. 6B is an exploded perspective view of the headphone device provided by this creation from a perspective;

FIG. 6C : is an exploded perspective view of the headphone device provided by the author from another perspective; and

Figure 7: It is a partial cross-sectional view of the earphone device provided by this creation.

B: Bending part

C1: sound chamber

P1: Gas channel

O: Second vent

10: Speaker unit

101: Sound transmitter

11: Cover

111: Recess

112: Raised part

1121: Sound hole

12: Sound cavity shell

121: Bottom

123: Curved base

1231: Groove

12311: First end

12312: Second end

124: First vent

125: Arc cover

113: accommodating slot

13: Shell

131: External opening

Claims (5)

An earphone device, comprising: a cover body with a plurality of sound holes; a sound chamber shell, combined with the inner surface of the cover to form a sound chamber, comprising: a bottom; a side wall portion is arranged on the bottom in a surrounding manner; An arc-shaped base, disposed at the junction of the bottom and the side wall, includes: A groove has a first end and a second end opposite, the first end is located on the side wall portion, the second end is located on the bottom, and there is at least one bend between the first and second ends fold; a first vent hole, disposed on the bottom surface of the groove and close to the first end; an arc-shaped cover plate combined with the arc-shaped base to close the groove, so that the groove forms a gas channel, and a second vent hole is formed at the second end; and A speaker unit is disposed in the sound chamber and has a sound emitting end, and the sound emitting end faces the sound outlet holes. The earphone device according to claim 1, wherein the outer surface of the cover has a concave portion and a convex portion, the convex portion is disposed in the center of the concave portion, and the sound holes are disposed in the convex portion above the start. The earphone device as described in claim 2, wherein an accommodating groove is formed on the inner surface of the cover, the accommodating groove corresponds to the protruding portion, and the speaker unit is installed in the accommodating groove . The earphone device as described in claim 1, comprising a casing for covering the sound cavity casing and being combined with the cover, and the casing has an outer portion corresponding to the first vent hole hole. The earphone device according to claim 1, wherein two sides of the groove are respectively provided with a flange structure arranged in a stepped manner, the height of the flange structure is higher than the bottom surface of the groove, and the arc-shaped cover plate The first end can be mated with the flange structure and closed.

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