Novel composite conduction mode earphone

Abstract

The utility model provides a novel composite conduction mode earphone, the earphone comprises a head bow support, a left air conduction horn and a right air conduction horn, the middle part of the head bow support is provided with a bone conduction horn, the bone conduction horn (1) comprises a bone conduction loudspeaker (2) and a bone conduction loudspeaker cavity box (3), the bone conduction loudspeaker cavity box (3) is composed of a box body (31) and a box cover (32) which are matched with each other, and the left air conduction horn and the right air conduction horn are arranged in the head bow support. The outer side surface of the box cover (32) is a flat surface, the inner side surface of the box cover (32) is provided with a loudspeaker mounting groove (322), the bone conduction loudspeaker (2) is fastened in the loudspeaker mounting groove (322) through a bolt (4), and the earphone further comprises a Bluetooth receiver, and a first audio amplifier, a second audio amplifier and a third audio amplifier which are electrically connected with the Bluetooth receiver. The composite conduction mode earphone combines the advantages of a traditional air conduction earphone and a traditional bone conduction earphone, and is suitable for hearing training and hearing testing of special crowds.

Description

Technical Field

[0001] The utility model relates to the technical field of earphones, in particular to a novel earphone with a composite conduction mode. Background Art

[0002] Headphones that can emit modulated sounds for special groups of people usually emit sounds with specific frequencies by setting filters to meet the needs of special groups of people. However, some special groups also have hearing impairments, so headphones based on the principle of air conduction acoustics are difficult to meet the needs of these special groups of people. Utility Model Content

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a new composite conduction mode earphone.

[0004] The utility model provides a novel composite conduction mode headset, the headset comprises a head bow support and a left air conduction speaker and a right air conduction speaker respectively mounted at two ends of the head bow support, wherein a bone conduction speaker is arranged in the middle of the head bow support, the bone conduction speaker is mounted on the lower side of the head bow support, the bone conduction speaker 1 comprises a bone conduction speaker 2 and a bone conduction speaker cavity box 3, the bone conduction speaker cavity box 3 is composed of a matching box body 31 and a box cover 32, the outer side surface of the box cover 32 is a flat surface, a bolt hole 321 is arranged in the middle of the box cover 32, a speaker mounting groove 322 is arranged on the inner side surface of the box cover 32, the bone conduction speaker 2 is fastened in the speaker mounting groove 322 by a bolt 4, the headset also comprises a Bluetooth receiver and a first audio amplifier and a second audio amplifier electrically connected to the Bluetooth receiver, the first audio amplifier is electrically connected to the left air conduction speaker and the right air conduction speaker, respectively, and the second audio amplifier is electrically connected to the bone conduction speaker 2.

[0005] In the utility model, the bottom of the bone conduction speaker cavity box 3 is provided with a wire hole for passing the cable of the bone conduction speaker.

[0006] The outer side surface of the box cover 32 faces the lower side surface of the head bow support, so that the lower side surface is in contact with the user's skull, which facilitates the frequency emitted by the bone conduction speaker to be transmitted to the user's skull through the box cover 32.

[0007] In the present invention, for the convenience of description but not limitation, the side of the head bow support facing the wearer's scalp is referred to as "lower".

[0008] As a preferred implementation, the bone conduction speaker 2 has an operating voltage of 3.7V, a rated power of 1.5W, a nominal impedance of 4.5 ohms, and a resonance frequency of 300-19000 Hz.

[0009] Preferably, in order to improve wearing comfort, a flexible material layer is wrapped on the outer side of the headbow support, for example, sponge is used as the flexible material. In particular, a cavity box groove is opened on the lower side of the middle part of the headbow support, and the bone conduction speaker cavity box 3 is fixed in the cavity box groove. The outer side of the box cover 32 of the bone conduction speaker cavity box 3 protrudes 2-3mm from the lower side of the middle part of the headbow support. The part of the headbow support outside the bone conduction speaker cavity box 3 includes a flexible material layer, and the thickness of the flexible material layer is 2-3mm.

[0010] The novel composite conduction mode earphone of the present invention is provided with an air conduction speaker and a bone conduction speaker, wherein the bone conduction speaker converts the sound signal into mechanical vibration, and the vibration is transmitted to the skull on the top of the user's head through the box cover of the bone conduction speaker cavity box. Since the skull is an ideal medium for sound, the sound signal can be effectively transmitted to the bones of the inner ear, and then the bones of the inner ear are transmitted to the auditory nerve of the cochlea, so that the listener can perceive the sound signal.

[0011] The composite conduction mode earphone of the utility model combines air conduction and bone conduction speakers, can effectively meet the needs of special groups of people, and help people with communication, attention and learning disabilities, and then stimulate the brain through the auditory system to restore listening ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the bone conduction speaker structure;

[0013] Figure 2 This is a stereoscopic image of the bone conduction speaker cavity box;

[0014] Figure 3 It is a three-dimensional diagram of the box body of the bone conduction speaker cavity box;

[0015] Figure 4A A three-dimensional diagram of the box cover of the bone conduction speaker cavity box;

[0016] Figure 4B It is a top view of the box cover of the bone conduction speaker cavity box;

[0017] Figure 5 Schematic diagram of signal transmission of the present invention. DETAILED DESCRIPTION

[0018] The following embodiments are used to explain the technical solutions of the present utility model in a non-limiting manner.

[0019] Example 1

[0020] Set as Figure 1 The bone conduction speaker 1 includes a bone conduction speaker 2, a bone conduction speaker cavity, and a box cover 31 and a box cover 32. The bone conduction speaker 2 and the box cover 32 are fixed together by bolts 4, and then the box cover 31 and the box cover 32 are installed together to form a bone conduction speaker cavity box 3.

[0021] The bone conduction speaker uses a working voltage of 3.7v, a rated power of 1.5W, a nominal impedance of 4.5 ohms, and a resonance frequency of 300-19000Hz to meet the needs of various groups of people.

[0022] The two ends of the headbone support of the headset are the left air conduction speaker and the right air conduction speaker, respectively. A cavity box groove is opened on the lower side of the middle part of the headbone support, and the bone conduction speaker cavity box is fixed in the groove. After being fixed, since the cavity box has a certain thickness, the bone conduction speaker cavity box protrudes 2-3mm from the lower side of the middle part of the headbone support, and the part of the headbone support other than the bone conduction speaker cavity box 3 includes a flexible material layer, and the thickness of the flexible material layer is 2-3mm, so that the lower end surface of the flexible material layer is flush with the bone conduction speaker cavity box, thereby improving wearing comfort.

[0023] The Bluetooth receiver, the first audio amplifier and the second audio amplifier are also installed in the head bow bracket. The first audio amplifier is electrically connected to the left and right air conduction speakers respectively, and the second audio amplifier is electrically connected to the bone conduction speaker. The Bluetooth receiver transmits audio data to the audio amplifier.

[0024] When in use, the sound signal drives the air conduction speaker and the bone conduction speaker respectively through the first and second audio amplifiers, and the bone conduction speaker converts the sound signal into mechanical vibration, which is then transmitted to the user's scalp by the cover of the bone conduction speaker cavity box. Since the skull is an ideal medium for sound, it can effectively transmit the sound signal to the bones of the inner ear, and then the bones of the inner ear transmit it to the auditory nerve of the cochlea, so that the listener can perceive the sound signal.

[0025] Combining air conduction with bone conduction headphones can effectively help special groups of people stimulate their brains and restore their listening ability.

[0026] The bone conduction speaker of this embodiment uses a resonance frequency of 300-19000Hz, and can realize audio processing of multiple frequencies through frequency modulation, especially using a low-pass filter for music processing, wherein frequencies below 1000Hz can be processed by a filter with a center frequency of plus or minus 10Hz; frequencies between 1000Hz and 10000Hz can be processed by a filter with a center frequency of plus or minus 20Hz; frequencies above 10000Hz can be processed by a filter with a center frequency of plus or minus 50Hz. Digital filters are prior art in this field and will not be described in detail again.

[0027] The composite conduction mode earphone of the utility model combines the advantages of traditional air conduction earphone and bone conduction earphone, and is suitable for hearing training and hearing test applications of special groups of people.

Claims

1. A new composite conduction mode earphone, comprising a headbow support and a left air conduction speaker and a right air conduction speaker respectively mounted at two ends of the headbow support, characterized in that A bone conduction speaker is arranged in the middle of the head bow support, and the bone conduction speaker is installed on the lower side of the head bow support. The bone conduction speaker (1) comprises a bone conduction speaker (2) and a bone conduction speaker cavity box (3). The bone conduction speaker cavity box (3) consists of a matching box body (31) and a box cover (32). The outer side of the box cover (32) is a flat surface. A bolt hole (321) is arranged in the middle of the box cover (32). A speaker installation groove (322) is arranged on the inner side of the box cover (32). The bone conduction speaker (2) is fastened in the speaker installation groove (322) by bolts (4). The earphone also comprises a Bluetooth receiver and a first audio amplifier and a second audio amplifier electrically connected to the Bluetooth receiver. The first audio amplifier is electrically connected to the left air conduction speaker and the right air conduction speaker respectively, and the second audio amplifier is electrically connected to the bone conduction speaker (2).

2. The novel composite conduction mode earphone according to claim 1, characterized in that The bottom of the bone conduction speaker cavity box (3) is provided with a wire hole.

3. The novel composite conduction mode earphone according to claim 1, characterized in that The outer side of the box cover (32) faces the lower side of the head bow support.

4. The novel composite conduction mode earphone according to claim 1, characterized in that The operating voltage of the bone conduction speaker (2) is 3.7V, the rated power is 1.5W, the nominal impedance is 4.5 ohms, and the resonance frequency is 300-19000 Hz.

5. The novel composite conduction mode earphone according to claim 1, characterized in that A layer of flexible material is wrapped around the outer side of the headbow support.

6. The novel composite conduction mode earphone according to claim 5, characterized in that A cavity box groove is opened on the lower side of the middle part of the head bow support, and the bone conduction speaker cavity box (3) is fixed in the cavity box groove. The outer side of the box cover (32) of the bone conduction speaker cavity box (3) protrudes from the lower side of the middle part of the head bow support by 2-3 mm. The part of the head bow support outside the bone conduction speaker cavity box (3) includes a flexible material layer, and the thickness of the flexible material layer is 2-3 mm.

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