Sound vibrator

Abstract

The utility model relates to the field of loudspeakers, in particular to a sound vibrator, which comprises a magnetic system for generating a magnetic circuit and a voice coil positioned in the magnetic circuit, the magnetic system and the voice coil are wrapped by a shell, the magnetic system is connected with the shell through a vibration elastic sheet of the magnetic system, the vibration elastic sheet is made of stainless steel materials, the voice coil is fixed in the shell, and the magnetic system is connected with the shell through the vibration elastic sheet. The voice coil pushes or pulls back the magnetic system to move back and forth through a surrounding magnetic field naturally generated by current; according to the utility model, the structure of the shell is adopted, the magnetic system and the voice coil are sealed, and the waterproof and moisture-proof functions are realized, so that a series of problems which influence normal driving and are caused by water permeation can be effectively avoided, the situations of electric leakage and the like are also avoided, and the application scene is wider; according to the utility model, after the voice coil is electrified, the driving mode of driving the magnet to move is adopted, and the vibration elastic sheet made of a stainless steel material is combined, so that the frequency response generated by vibration is lower, the frequency response curve is closer to be flat, and the distortion effect is weakened.

Description

Technical Field

[0001] The utility model relates to the field of loudspeakers, in particular to a sound vibrator. Background Art

[0002] Figure 1 The driving structure of the NXT planar speaker is shown. This is a relatively conventional wide-band acoustic radiator and a distributed speaker.

[0003] In this loudspeaker, the vibration damper 4' is made of cloth and is in the shape of a wave band. Therefore, the loudspeaker using this driving structure has the characteristics of wide frequency coverage and high stability.

[0004] However, when using it, you will find that Figure 1 The driving structure shown does not have waterproof and moisture-proof functions. Water can penetrate the vibration damper 4' made of cloth, causing the amplitude of the vibration damper 4' to decrease, thereby affecting the sound waves generated in the air, and thus causing the sound quality to deteriorate; in addition, it will also contact the copper wire on the voice coil 3', causing leakage.

[0005] Secondly, when testing the vibration damper 4' which is made of cloth and designed in wave band shape, its frequency response is not low enough, the frequency response curve is not flat, there are obvious peaks and troughs, and the distortion is relatively large. Utility Model Content

[0006] In order to solve the above problems, the utility model provides a sound vibrator, which has waterproof and moisture-proof functions and can solve the problem of leakage.

[0007] The utility model provides a sound vibrator, which mainly solves the problem that the frequency response is not low enough.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A sound vibrator includes a magnetic system for generating a magnetic circuit and a voice coil located in the magnetic circuit. The invention is characterized in that the magnetic system and the voice coil are wrapped by a shell, the magnetic system is connected to the shell through its vibrating spring sheet, the vibrating spring sheet is made of high manganese stainless steel, the voice coil is fixed in the shell, and the voice coil pushes or pulls back the magnetic system to make a reciprocating motion through the surrounding magnetic field naturally generated by the electric current.

[0010] Furthermore, the magnetic system includes a U-iron, a magnet, and a washer. The U-iron has a cavity with an opening. The magnet is connected to the cavity with the end of the magnetic pole and is connected to the end of the other magnetic pole by the washer. There is a gap between the magnet, the washer and the U-iron. The voice coil is distributed in the gap. The side of the U-iron is connected to the vibration spring.

[0011] Furthermore, the shell includes an upper cover and a lower cover connected to each other, the side edge of the upper cover is a step, the outer end of the vibration spring and the edge of the lower cover are located on the inner surface of the step, and the vibration spring is located between the upper cover and the lower cover in a clamped posture.

[0012] Furthermore, the U iron and the voice coil are suspended above the lower cover.

[0013] Beneficial effects of the utility model:

[0014] 1. The utility model adopts a shell structure to seal the magnetic system and the voice coil. The waterproof and moisture-proof functions achieved can effectively avoid a series of problems affecting normal driving caused by water infiltration, thereby avoiding the occurrence of leakage and the like, and has a wider range of usage scenarios.

[0015] 2. The utility model adopts a driving mode that drives the magnet to move after the voice coil is energized, and combines it with a vibration shrapnel made of high manganese stainless steel material. The frequency response generated by its vibration is lower, the frequency response curve is closer to flat, and the distortion effect is also weakened. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the prior art.

[0017] Figure 2 It is a structural diagram of the utility model. DETAILED DESCRIPTION

[0018] Figure 2 The utility model shows a structural diagram of a sound vibrator.

[0019] The utility model is a part of a loudspeaker, belonging to a driving part of the loudspeaker.

[0020] The invention comprises a shell composed of an upper cover 1 and a lower cover 2, wherein a magnetic system and a voice coil 3 are arranged in the shell. The voice coil 3 is fixed in the shell and is located in the magnetic circuit of the magnetic system. The existence of the shell can prevent water from penetrating into the voice coil 3 and the magnetic system, thereby preventing the magnetic system and the voice coil 3 from being damaged.

[0021] In addition, the voice coil 3 is fixed to the shell in such a way that the magnetic system makes a reciprocating motion. The magnetic system includes a vibration spring 4 made of high manganese stainless steel. The outer end of the vibration spring 4 is connected to the shell, and the inner end is connected to the U iron 5. The upper cover 1 serves as a vibration interface. When making a reciprocating motion, the energy generated by the vibration spring 4 is transmitted to the outside through the upper cover 1. This method of driving the permanent magnet magnetic circuit and the vibration spring 4 made of high manganese stainless steel can make the speaker using this driving part have a lower frequency response, thereby producing a better low-frequency effect.

[0022] In addition, the high manganese stainless steel shrapnel used as the vibration shrapnel 4 also has the advantages of fatigue resistance and longer service life.

[0023] The magnetic system includes a washer 6, a U iron 5, and a magnet 7. In the present embodiment, the U iron 5 has a cavity opening upward, and the magnet 7 and the washer 6 are located in the cavity. The magnet 7 is connected to the washer 6 and the U iron 5 at the ends of the magnetic poles, respectively, so the washer 6 is located at the upper end of the magnet 7, and the lower end of the magnet 7 is located at the bottom of the cavity. There is a gap J between the magnet 7, the washer 6 and the cavity, and the voice coil 3 is located in the gap J. After the voice coil 3 is energized, the naturally formed magnetic field pushes or pulls back the magnetic system.

[0024] The vibration spring piece 4 is an annular structure, and thus, after the U iron 5 is connected to the inner annular surface of the vibration spring piece 4 , the U iron 5 is suspended above the lower cover 2 .

[0025] The voice coil 3 is fixed in the upper cover 1 , and therefore, the voice coil 3 is also suspended above the lower cover 2 .

[0026] The washer 6 and the U iron 5 both have the effect of conducting magnetism, so that the gap J generates a stronger magnetic field.

[0027] The side edge of the upper cover 1 is a step 1a, the outer end of the vibration spring 4 and the edge of the lower cover 2 are located on the inner surface of the step 1a, and the vibration spring 4 is located between the upper cover 1 and the lower cover 2 in a clamped posture. This fixing method has more contact area connected to the vibration spring 4, which can enhance the connection effect between the vibration spring 4 and the outer shell.

[0028] It should be noted that the upper cover 1 and the lower cover 2 can be fixed by glue or other methods.

[0029] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A sound vibrator, comprising a magnetic system for generating a magnetic circuit, and a voice coil located in the magnetic circuit, characterized in that: The magnetic system and the voice coil are wrapped in the outer shell. The magnetic system is connected to the outer shell through its vibrating spring. The vibrating spring is made of stainless steel. The voice coil is fixed in the outer shell. The voice coil pushes or pulls back the magnetic system to make a reciprocating motion through the surrounding magnetic field naturally generated by the current.

2. A sound vibrator according to claim 1, characterized in that: The magnetic system includes a U-iron, a magnet, and a washer. The U-iron has a cavity with an opening. The magnet is connected to the cavity with the end of the magnetic pole and is connected to the end of the other magnetic pole by the washer. There is a gap between the magnet, the washer and the U-iron. The voice coil is distributed in the gap. The side of the U-iron is connected to the vibration spring.

3. A sound vibrator according to claim 2, characterized in that: The shell includes an upper cover and a lower cover connected to each other. The side edge of the upper cover is a step. The outer end of the vibration spring and the edge of the lower cover are located on the inner surface of the step. The vibration spring is located between the upper cover and the lower cover in a clamped posture.

4. A sound vibrator according to claim 3, characterized in that: The U iron and voice coil are suspended above the lower cover.

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