CN202261738U - an earphone - Google Patents

Abstract

The utility model provides an in-ear earphone, is including inserting the sound pipe of duct, the sound pipe divide into outer sound pipe and interior sound pipe, and interior sound pipe box is in outer sound pipe, leaves the space between the outer wall of interior sound pipe and the inner wall of outer sound pipe, and the one end of outer sound pipe communicates with each other with a big vibrating diaphragm loudspeaker, and outer sound pipe constitutes the play sound passageway of big vibrating diaphragm loudspeaker, and the one end of interior sound pipe communicates with each other with a little vibrating diaphragm loudspeaker, and interior sound pipe constitutes the play sound passageway of little vibrating diaphragm loudspeaker. The utility model has the advantages that: the outer sound tube, the ear canal of the human ear and the cochlea form a group of resonant cavities, the inner sound tube, the ear canal of the human ear and the cochlea form another group of resonant cavities, and the two groups of resonant cavities form composite sound resonance formed by combining two paths of sound vibration systems, so that a two-path driving system is formed, the bandwidth is wide, and the tone quality of the in-ear earphone is improved.

Description

an earphone

technical field

The utility model relates to an earphone, in particular to an in-ear earphone inserted into the ear canal.

Background technique

Currently known in-ear earphones are single-channel driven in-ear earphones with narrow bandwidth and poor sound quality.

Utility model content

The purpose of the utility model is to provide an in-ear earphone with better sound quality.

The main technical solution adopted by the utility model is: an in-ear earphone, including a sound tube inserted into the ear canal, the sound tube is divided into an outer sound tube and an inner sound tube, the inner sound tube is set in the outer sound tube, and the inner sound tube There is a gap between the outer wall and the inner wall of the outer sound tube. One end of the outer sound tube communicates with a large diaphragm speaker. The outer sound tube forms the sound channel of the large diaphragm speaker. One end of the inner sound tube connects with a small diaphragm speaker In the same way, the inner sound tube constitutes the sound channel of the small diaphragm speaker.

The utility model can also adopt the following subsidiary technical scheme: the external sound tube and the internal sound tube are not air-tight except for the communication at the sound outlet.

One end of the inner sound tube communicating with the small diaphragm horn forms a resonance cavity, and the back of the large diaphragm horn is provided with another resonance cavity.

The utility model has the advantages that: the external sound tube and the human ear canal and cochlea form a set of resonance cavities, the inner sound tube and the human ear canal and cochlea form another set of resonant cavities, and the two sets of resonant cavities form two channels of sound The composite acoustic resonance formed by the combination of the vibration system constitutes a two-way drive system with a wide bandwidth and improves the sound quality of the in-ear headphones.

Description of drawings

Fig. 1 is a structural representation of the utility model.

Detailed ways

A kind of in-ear earphone according to the utility model, as shown in Figure 1, comprises a sound tube inserted into the ear canal, the sound tube is divided into an outer sound tube 1 and an inner sound tube 2, and the inner sound tube 2 is set outside In the sound tube 1, there is a gap 3 between the outer wall of the inner sound tube 2 and the inner wall of the outer sound tube 1, and one end of the outer sound tube 1 communicates with a large diaphragm horn 4, and the outer sound tube 1 constitutes a large diaphragm horn 4 One end of the inner sound tube 2 communicates with a small diaphragm speaker 5, and the inner sound tube 2 constitutes the sound output channel of the small diaphragm speaker 5. The sound outlets of the external sound tube 1 and the internal sound tube 2 are covered by a layer of dust cover 8. The dust cover 8 has good air permeability and will not block the sound. The outer sound tube 1 and the inner sound tube 2 are connected to each other except at the sound outlet, so that the sound quality can be further improved. In order to increase the comfort of wearing earphones, a rubber sleeve 9 is also covered with the outer sound tube 1 .

When the external sound tube 1 and the internal sound tube 2 are inserted into the ear canal of the human ear, the external sound tube 1 forms a resonance cavity with the human ear canal and cochlea, and the internal sound tube 2 and the human ear canal and cochlea Another group of resonant cavities is formed, and the two groups of resonant cavities form a composite acoustic resonance composed of two-way acoustic vibration systems, forming a two-way drive system with a wide bandwidth and improving the sound quality of the in-ear headphones.

As the best implementation mode, one end of the inner acoustic tube 2 communicating with the small diaphragm horn 5 forms a resonant chamber 6 , and another resonant chamber 7 is provided on the back of the large diaphragm horn 4 . As a result, the sound quality of the headphones can be further improved. According to the principle of acoustics, the sound channel and the cavity connected with it are called LC resonant cavity in the acoustic structure, and the vibration system will resonate in the resonant cavity. The resonance effect is used to enhance the frequency response of a certain part, and the two resonance effects respectively enhance the response of different frequency bands.

Claims (3)

1. An in-ear earphone, comprising a sound tube inserted into the ear canal, characterized in that: the sound tube is divided into an outer sound tube (1) and an inner sound tube (2), and the inner sound tube (2) is sleeved on the outer sound tube (1), there is a gap (3) between the outer wall of the inner sound tube (2) and the inner wall of the outer sound tube (1), and one end of the outer sound tube (1) communicates with a large diaphragm horn (4), The outer sound tube (1) constitutes the sound channel of the large diaphragm speaker (4), one end of the inner sound tube (2) communicates with a small diaphragm speaker (5), and the inner sound tube (2) constitutes a small diaphragm speaker ( 5) The sound channel. 2 . The in-ear earphone according to claim 1 , characterized in that: the outer sound tube ( 1 ) and the inner sound tube ( 2 ) are airtight to each other except at the sound outlet. 3. The in-ear earphone according to claim 1 or 2, characterized in that: the end of the inner sound tube (2) communicating with the small diaphragm horn (5) forms a resonance cavity (6), and the large Another resonance cavity (7) is provided on the back of the diaphragm horn (4).

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