CN204145747U - A kind of structural bone conduction microphone of supporting type - Google Patents

Abstract

The utility model provides a supporting structure bone conduction microphone, which includes a sound pickup part, a magnetic circuit part and an electric signal conversion voice coil, the sound pickup part is connected to the magnetic circuit part, and the magnetic circuit part is connected to the electric signal conversion voice coil. The pickup part includes a suction piece, an elastic resonance piece and a fixing ring. There is a positioning column in the center of the suction piece for connection. The elastic resonance piece is placed in the center of the positioning column on the suction piece and bonded with glue. The fixing ring is pressed against the elastic On the resonator, the magnetic circuit part includes a magnetic core, a T-shaped iron core and a main body fixing frame. There is a hole in the center of the main body fixing frame. Put it on the surface of the center hole cover of the main body fixing frame and glue it with glue. The direction of the center column of the T-shaped iron core faces inward. The utility model has a reasonable design and is easy to use. Vibration amplifies the sound signal.

Description

A Supporting Structure Bone Conduction Microphone

technical field

The utility model is used for communication equipment or for detecting sound signals, in particular to a supporting structure bone conduction microphone.

Background technique

Ordinary microphones use air vibration conduction and are completely open, but they cannot shield background noise. In various noisy environments, they cannot get the clear sound they want.

Bone conduction microphone is a device that conducts sound by directly attaching to the sound source. It only transmits the signal that is attached to the sound source. With the popularization of mobile phones and mobile devices, various relatively noisy environments are harmful to communication. The demand is getting higher and higher, and mobile phones or devices are required to have the ability to filter background noise. A bone conduction microphone can convert the vibration generated by the sound source attached to it into an electrical signal, thereby shielding the noise of the environment.

Nowadays, people have higher and higher requirements for sound, and hope to get clearer and purer sound. The usual bone conduction microphone has poor sensitivity, and the transmitted sound is not clear or the background noise cannot be filtered out, so the sound that needs to be improved is getting stronger and stronger. .

Utility model content

The purpose of this utility model is to solve the above-mentioned shortcomings, and provide a supporting structure bone conduction microphone, so as to obtain a clearer and cleaner sound.

The purpose of this utility model is achieved by the following technical solutions:

A supportive structural bone conduction microphone, comprising a sound pickup part, a magnetic circuit part and an electric signal conversion voice coil, the sound pickup part is connected to the magnetic circuit part, and the magnetic circuit part is connected to the electric signal conversion voice coil, and the sound pickup part includes The suction piece, the elastic resonant piece and the fixing ring, the center of the suction piece has a positioning column for connection, the elastic resonance piece is placed in the center of the positioning column on the suction piece and bonded with glue, and the fixing ring is tightly pressed on the elastic resonance piece. The above-mentioned magnetic circuit part includes a magnetic core, a T-shaped iron core and a main body fixing frame. There is a hole in the center of the main body fixing frame. The magnetic core is placed on the innermost side along the center of the main body fixing frame and bonded with glue. Cover the surface of the center hole of the frame and glue it with glue, and the direction of the center column of the T-shaped iron core faces inward.

The utility model also has some technical characteristics:

The electric signal conversion voice coil is fixed on the T-shaped iron core.

The elastic resonant hole of the pickup part is screwed to the main body fixing frame of the magnetic circuit part.

The elastic resonant piece is a structural form with high sensitivity, and can be replaced with another structural form.

The microphone attracts the magnetic circuit part through the suction piece of the sound pickup part, causing the magnetic field to change, and the voice coil cuts the changed magnetic force line through the electric signal conversion to generate an electric signal and then outputs the signal.

The utility model has the following beneficial effects:

The utility model has reasonable design and convenient use. The elastic resonant plate structure adopted has high sensitivity, can pick up relatively fine vibrations, and amplifies sound signals. the

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is the exploded schematic view of the utility model;

Fig. 3 is a sectional view of the utility model;

Fig. 4 is the top view of the utility model;

Fig. 5 is a schematic diagram of another elastic resonant plate of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1, a supportive structural bone conduction microphone includes a pickup part, a magnetic circuit part and an electrical signal conversion voice coil 2, the pickup part is connected to the magnetic circuit part, and the magnetic circuit part is connected to the electrical signal conversion voice coil, The sound pickup part includes a suction piece 5, an elastic resonance piece 6 and a fixed ring 7, the center of the suction piece 5 has a positioning column for connection, and the elastic resonance piece 6 is placed in the center of the positioning column 5 on the suction piece and glued Bonding, the fixing ring 7 is tightly pressed on the elastic resonant piece 6, the magnetic circuit part includes the magnetic core 3, the T-shaped iron core 1 and the main body fixing frame 4, the main body fixing frame 4 has a hole in the center, and the magnetic core 3 is along the The center of the main body fixing frame 4 is placed on the innermost side and glued with glue. The T-shaped iron core 1 is placed on the surface of the center hole cover of the main body fixing frame 4 and glued with glue. The direction of the central column of the T-shaped iron core 1 faces inward. The voice coil 2 is fixed on the T-shaped iron core 1, and the elastic resonant sheet hole of the sound pickup part is connected with the main fixing frame screw 8 of the magnetic circuit part, and the elastic resonant sheet is a structural form with high sensitivity , can be replaced with another structural form, the microphone is attracted by the suction piece of the pickup part and the magnetic circuit part, causing the magnetic field to change, and the voice coil cuts the changing magnetic force line through the electric signal conversion to generate an electric signal and then converts the signal output.

First place the voice coil on the T-shaped iron core of the magnetic circuit part, and then connect the pickup part with the magnetic circuit part through the fixing hole on the elastic resonator piece and the main body fixing frame with screws, the resonance generated by the pickup part and the magnetic The circuit part is attracted to produce a change in the magnetic force line, and then the electric signal conversion voice coil cuts the changed magnetic force line to generate an electrical signal, and the voice coil outputs the signal through the electrical signal conversion.

Claims (5)

1. the structural bone conduction microphone of a supporting type, comprise pickup parts, magnetic circuit part and signal of telecommunication conversion voice coil loudspeaker voice coil, it is characterized in that: pickup parts connect magnetic circuit part, magnetic circuit part connects signal of telecommunication conversion voice coil loudspeaker voice coil, described pickup parts comprise adhesive sheet, elasticity resonance plate and retainer ring, there is the reference column for connecting at adhesive sheet center, elasticity resonance plate is positioned over the reference column center on adhesive sheet and bonds with glue, retainer ring presses on elasticity resonance plate, described magnetic circuit part comprises magnetic core, T-shaped iron core and main body fixed mount, main body fixed mount center is porose, magnetic core is placed on the inside blend compounds water bonding along main body fixed mount center, T-shaped iron core is put in the bonding of main body fixed mount centre bore cap surface blend compounds water, T-shaped core center post direction inwardly.

2. the structural bone conduction microphone of a kind of supporting type as claimed in claim 1, is characterized in that: described signal of telecommunication conversion voice coil loudspeaker voice coil is fixed on T-shaped iron core.

3. the structural bone conduction microphone of a kind of supporting type as claimed in claim 1, is characterized in that: the elasticity resonance film perforation of described pickup part is connected with the main body fixed mount screw of magnetic circuit part.

4. the structural bone conduction microphone of a kind of supporting type as claimed in claim 1, is characterized in that: described elasticity resonance plate has highly sensitive a kind of version, replaceable another kind of version.

5. the structural bone conduction microphone of a kind of supporting type as claimed in claim 1, it is characterized in that: described microphone passes through adhesive sheet and the magnetic circuit part adhesive of pickup part, impel magnetic field to change, after producing the signal of telecommunication, signal is exported by the magnetic line of force of signal of telecommunication conversion voice coil loudspeaker voice coil cutting change.