CN101106833A - In-ear and earplug earphone capable of adjusting volume of front sound chamber between loudspeaker and shell - Google Patents

Abstract

The invention discloses an earphone capable of adjusting the volume of a front sound chamber between a loudspeaker and a shell. The horn unit is arranged in the shell, and the shell forms an earplug structure in front of the horn unit. The sound chamber in the earplug structure has a volume, and the movable piece is arranged on the shell and moves relative to the sound chamber to adjust the volume of the sound chamber, so that the frequency response of the sound emitted by the speaker unit is different along with the change of the volume of the sound chamber.

Description

In-ear and earphones with adjustable volume of the front sound chamber between the speaker and the housing

technical field

The invention relates to an earphone, in particular to an earphone capable of adjusting the volume of a front sound chamber between a speaker and a casing.

Background technique

With the continuous advancement of science and technology, all electronic products are developing towards the trend of lightweight and miniaturization. People can use miniaturized electronic products, such as radios or walkmans, anytime and anywhere. In addition, due to the increasing popularity of personal digital products, such as common MP3 players, mobile phones, personal digital assistants (PDAs) or notebook computers, etc., are indispensable in daily life. In addition, mobile phones that combine radio and MP3 functions have also appeared.

Regardless of the above-mentioned electronic products, in order to allow users to listen to the sound information provided by the electronic products without disturbing others, earphones have become a necessary accessory for the electronic products. In addition, the earphone also provides better sound transmission for the listener, so that the listener can clearly hear and understand the sound content, unlike the unclear situation caused by the sound transmission in the air, and especially during the user's movement, For example, it will not be affected by sports, driving, intense activities or noisy environments.

However, since the size and structure of each person's ears and ear canals are different, and each person's preferences for music are also different, the judgment of the sound quality of headphones varies from person to person, and it is difficult to meet everyone's needs. At the same time, the frequency response curve of most earphones on the market is fixed. If you want to change the frequency response of the treble or bass part of the signal, you can only change the characteristics of the sound field distribution with the help of an electronic equalizer or related software. Even if an external electronic equalizer can change the frequency response characteristics of the earphone, the time delay caused by the inductance or capacitance in the electronic equalizer cannot be compensated. Therefore, the improvement on the earphone structure is bound to be an unavoidable subject.

Contents of the invention

The object of the present invention is to provide an earphone capable of adjusting the volume of the front sound chamber between the speaker and the casing, so as to change the structural sound field characteristics of the earphone body.

The invention proposes an earphone capable of adjusting the volume of the front sound chamber between the speaker and the housing, which includes a speaker unit, a housing and a movable part. The speaker unit is disposed in the housing, and the housing forms an earplug structure in front of the speaker unit. Wherein, the earplug structure has a sound chamber, and the sound chamber has a volume, and the movable part is arranged on the earplug structure and moves relative to the sound chamber to adjust the volume of the sound chamber.

According to an embodiment of the present invention, the above-mentioned movable element includes an inner sleeve, and the inner sleeve is disposed in the sound chamber and can extend outside the earplug structure. In addition, the housing correspondingly has a locking portion, which is locked with the outer surface of the inner sleeve.

According to the embodiment of the present invention, the above-mentioned earphone may further include an ear pad covering the earplug structure and the inner sleeve. In addition, the inner sleeve correspondingly has at least one sound outlet, which is exposed in the ear pad.

According to an embodiment of the present invention, the above-mentioned movable part includes an outer sleeve, and the outer sleeve can extend beyond the earplug structure. In addition, the housing correspondingly has a locking portion, which is locked with the inner surface of the outer sleeve.

According to the embodiment of the present invention, the above-mentioned earphone may further include an ear pad covering the earplug structure and the outer sleeve. In addition, the outer sleeve correspondingly has at least one sound outlet, which is exposed in the ear pad.

Because the present invention adopts a movable structure that can adjust the volume of the sound chamber, the movable inner sleeve or the outer sleeve moves relative to the sound chamber to change the volume of the sound chamber. Therefore, each person can adjust the frequency response of the headphone body for different music, so that the headphone can meet the needs of different customers.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.

Description of drawings

Fig. 1 is a schematic cross-sectional view of an earphone with an adjustable speaker front sound chamber volume according to an embodiment of the present invention;

Fig. 2 is a frequency response curve diagram of the volume change of the front sound chamber in the performance of the sound field characteristics of the earphone;

FIG. 3 and FIG. 4 are respectively schematic diagrams of movable parts in another two embodiments of the present invention.

Description of main component symbols

100: Headphones

110: speaker unit

112: transmission line

120: Earphone shell

120a: Earbud construction

122: Sound Chamber

124: Second locking part

130: movable part (sleeve)

140: Movable parts

142: inner sleeve

144: The first locking part

146: Sound hole

150: movable parts

152: outer sleeve

154: The first locking part

156: Sound hole

160: Ear pads

162: opening

Detailed ways

Please refer to FIG. 1 , which shows a schematic cross-sectional view of an earphone with adjustable volume of the front sound chamber between the speaker and the casing according to an embodiment of the present invention. The speaker unit 110 can be disposed in the earphone housing 120, and is electrically connected to an external host (such as an MP3 player, a mobile phone, a walkman, or a computer, etc.) with a transmission line 112, so that the speaker unit 110 can emit what is heard by the human ear. Acceptable voice messages. The internal structure of the loudspeaker unit 110 is not shown in FIG. 1 , and its external dimensions roughly match the volume of the internal cavity of the earphone housing 120, and can be inserted into the ear socket of the human ear (not shown). Among them, this type of earphone 100 is generally referred to as earphone or in-ear earphone. However, the earphone 100 of the present invention, which can adjust the volume of the front sound chamber between the speaker and the shell, can be widely used in various types of earphones, and is not limited to the earphone or in-ear earphone shown in FIG. 1 .

As shown in Figure 1, the earphone housing 120 forms an earplug structure 120a in front of the speaker unit 110, and has a sound chamber 122 inside it to generate a resonance effect, so that the sound emitted by the speaker unit 110 is in the front tone. The characteristics of the sound field in the chamber 122 are different, such as changing the frequency response of the treble part or the frequency response of the bass part, so that the frequency response curve is particularly prominent in the treble part or the bass part. Generally, when designing the sound field characteristics of the earphone, the actual volume of the front sound chamber 122 is also taken into consideration to analyze the influence of the volume of the front sound chamber 122 on the frequency response of the treble part or the frequency response of the bass part.

Please refer to FIG. 2 , which shows the frequency response curve of the volume change of the front sound chamber on the performance of the sound field characteristic of the earphone. In the audio frequency range that can be heard by the human ear (20Hz～20KHz), the results obtained through the artificial ear test show that as the volume of the front sound chamber increases (from 23mm ³ to 90mm ³ ), the high frequency part will be changed frequency response. Therefore, the frequency response curves of front chambers with different volumes are different. If the front sound chamber 122 has only a fixed volume and cannot be adjusted according to individual needs, the function of the front sound chamber 122 will be limited, and its performance cannot be further improved.

Therefore, the earphone 100 of the present invention adopts a movable structure that can adjust the volume of the front sound chamber between the speaker and the housing, and the movable part 130 moves relative to the front sound chamber 122 to overcome the above-mentioned problems. As shown in FIG. 1 , the movable member 130 is disposed in the sound chamber 122 of the earplug structure, and movably extends out of the earplug structure 120 a to increase the volume of the front sound chamber 122 . Wherein, the movable part 130 is, for example, a sleeve, which has a smooth surface and fits closely with the sidewall of the earplug structure 120a, but the movable part 130 can be freely expanded and contracted along the direction of the force by external force. Please refer to FIG. 3 and FIG. 4 for the schematic diagrams of the moving parts of the other two embodiments of the present invention.

As shown in FIG. 3 , the movable member 140 includes an inner sleeve 142 disposed in the front sound chamber 122 for adjusting the volume of the front sound chamber 122 . In addition, the outer surface of the inner sleeve 142 can further have a first locking portion 144 (such as a threaded portion), and the inner wall of the earphone housing 120 has a corresponding second locking portion 124 (such as a threaded portion). Locking, so that the inner sleeve 142 can be rotated out relative to the front sound chamber 122 , and extend out of the casing 120 along its axial direction, so as to increase the volume of the front sound chamber 122 . In addition, when the inner sleeve 142 is screwed into the front sound chamber 122 , the volume of the front sound chamber 122 is reduced.

In addition, the earplug structure 120a of the housing 120 can be equipped with an ear pad 160, which covers the earplug structure 120a and the inner sleeve 142 in a ring shape, and can be inserted into the ear socket to prevent external noise from entering the ear. The material of 160 is soft rubber, which is suitable for long-term use without discomfort. In addition, in addition to adjusting the volume of the front sound chamber 122, the inner sleeve 142 can also be configured with one or more sound outlet holes 146, which are exposed in the opening 162 of the ear pad 160, so that the sound of the speaker unit 110 can be obtained by The sound hole 144 reaches the inside of the ear.

Next, please refer to FIG. 4 , the movable member 150 includes an outer sleeve 152 disposed outside the earphone housing 120 for adjusting the volume of the front sound chamber 122 . In addition, the inner surface of the outer sleeve 152 can further have a first locking portion 154 (such as a threaded portion), and the outer wall of the earphone housing 120 has a corresponding second locking portion 124 (such as a threaded portion). Locking, so that the outer sleeve 152 can be rotated out relative to the front sound chamber 122 , and extend out of the casing 120 along its axial direction, so as to increase the volume of the front sound chamber 122 . In addition, when the outer sleeve 152 is screwed in relative to the front sound chamber 122, the volume of the front sound chamber 122 is reduced.

Similarly, an ear pad 160 can also be configured on the ear plug structure 120a of the housing 120, and its ring covers the ear plug structure 120a and the outer sleeve 152, and can be inserted into the ear socket to prevent external noise from entering the ear. The material of 160 is soft rubber, which is suitable for long-term use without discomfort. In addition, in addition to adjusting the volume of the front sound chamber 122, the outer sleeve 152 can also be configured with one or more sound outlet holes 156, which are exposed in the opening 162 of the ear pad 160, so that the sound of the speaker unit 110 can be heard from the speaker unit 110. The sound hole 154 reaches the inside of the ear.

In summary, the earphone of the present invention, which can adjust the volume of the front sound chamber between the speaker and the housing, includes a speaker unit, a housing, and a movable part, wherein the movable part is arranged inside or outside the housing, and can be positioned relative to the The front sound chamber between the speaker unit and the housing moves to adjust the volume of the front sound chamber instead of just a fixed volume. Because the sound field characteristics of the sound emitted by the speaker unit in the front sound chamber will be different due to the volume of the front sound chamber, so in the structure of the earphone body, the present invention can adjust the front sound volume between the speaker and the housing. The active structure of the chamber volume to change the sound field characteristics of the earphones. Therefore, each person can adjust the frequency response of the headphone body for different music, so that the headphone can meet the needs of different customers.

Although the present invention has been disclosed in conjunction with the above preferred embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the art may make some changes and modifications without departing from the spirit and scope of the present invention. Modification, therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims (10)

1. An earphone capable of adjusting the volume of the front sound chamber between the speaker and the housing, comprising: A speaker unit; a shell covering the speaker unit, and the housing forms an earplug structure in front of the speaker unit, the earplug structure has a sound chamber inside, and the sound chamber has a volume; and A movable part is arranged on the earplug structure, and the movable part moves relative to the sound chamber to adjust the volume of the sound chamber. 2. The earphone capable of adjusting the volume of the front sound chamber between the speaker and the shell as claimed in claim 1, wherein the movable part comprises an inner sleeve disposed in the sound chamber and can extend out of the earplug structure. 3. The earphone capable of adjusting the volume of the front sound chamber between the speaker and the shell as claimed in claim 2, wherein the earplug structure correspondingly has a locking portion which is locked with the outer surface of the inner sleeve. 4. The earphone capable of adjusting the volume of the front sound chamber between the speaker and the shell as claimed in claim 2, further comprising an ear pad covering the earplug structure and the inner sleeve. 5 . The earphone capable of adjusting the volume of the front sound chamber between the speaker and the shell as claimed in claim 4 , wherein the inner sleeve correspondingly has at least one sound hole exposed in the ear pad. 5 . 6. The earphone capable of adjusting the volume of the front sound chamber between the speaker and the housing as claimed in claim 1, wherein the movable part comprises an outer sleeve, and the outer sleeve is disposed outside the earplug structure. 7 . The earphone capable of adjusting the volume of the front sound chamber between the speaker and the shell as claimed in claim 6 , wherein the shell has a corresponding locking portion which is locked with the inner surface of the outer sleeve. 7 . 8. The earphone capable of adjusting the volume of the front sound chamber between the speaker and the shell as claimed in claim 6, further comprising an ear pad covering the earplug structure and the movable part. 9. The earphone capable of adjusting the volume of the front sound chamber between the speaker and the housing as claimed in claim 8, wherein the outer sleeve correspondingly has at least one sound hole exposed in the ear pad. 10. The earphone with adjustable volume of the front sound chamber between the speaker and the housing as claimed in claim 1, wherein the size of the speaker unit is suitable for being inserted into the ear.

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