CN213072999U

CN213072999U - Acoustic structure for eliminating standing wave of wireless sound box

Info

Publication number: CN213072999U
Application number: CN202022164292.6U
Authority: CN
Inventors: 王洪宇; 王长江; 王楠
Original assignee: Nanjing Pepper Technology Co ltd
Current assignee: Nanjing Pepper Technology Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-04-27
Anticipated expiration: 2030-09-27

Abstract

The utility model provides an acoustic structure of box standing wave is eliminated to wireless stereo set relates to the wireless stereo set field, include: the box, the vibration voice coil loudspeaker voice coil device, the vibrating diaphragm, first sealed partition, second sealed partition, inhale sound cotton and audio chip module, wherein, be equipped with the mounting hole on the lateral wall of box, first sealed partition inlays in the mounting hole, the edge and the first sealed partition fixed connection of vibrating diaphragm, the outer wall and the first sealed partition fixed connection of vibration voice coil loudspeaker voice coil device, it inhales the sound cotton to be equipped with between the back of vibrating diaphragm and the first sealed partition, be equipped with audio chip module in the below box of second sealed partition, permanent magnet among the vibration voice coil loudspeaker voice coil device is annular neodymium iron boron magnet, the iron core sets up in annular neodymium iron boron magnet, the coil is arranged in between iron core and the permanent magnet, the vibrting spear is fixed at the coil top, the vibrting spear passes through-hole and the. The utility model discloses can reduce or eliminate the box standing wave, help promoting the sound effect.

Description

Acoustic structure for eliminating standing wave of wireless sound box

Technical Field

The utility model relates to a wireless stereo set field particularly, relates to an acoustics structure of box standing wave is eliminated to wireless stereo set.

Background

The wireless sound box (wireless sound box) comprises a Bluetooth wireless sound box, a wifi wireless sound box, a 2.4G wireless sound box, an FM wireless sound box and the like. The Bluetooth wireless loudspeaker box and the wifi wireless loudspeaker box are developed from the early low-cost FM wireless loudspeaker box and the high-cost 2.4G wireless loudspeaker box, and most of the Bluetooth wireless loudspeaker boxes are mainly used in the market. When the sound box produces sound, sound waves with certain frequency and wavelength are exactly in the same phase as the original sound, so that the sound with the frequency is strengthened, and a part of the sound waves are weakened, and the strengthened and weakened sound can particularly attract the attention of a user to influence the hearing sense. Therefore, how to reduce or eliminate the standing wave of the sound box body becomes a technical problem to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the above-mentioned prior art or the correlation technique at least, provide an acoustic structure of box standing wave is eliminated to wireless stereo set, can reduce or eliminate the box standing wave, promote the sound effect.

The utility model discloses a realize through following technical scheme: an acoustic structure for a wireless sound to cancel standing waves in a cabinet, comprising: the vibration device comprises a box body, a vibration voice coil device, a vibration film, a first sealing baffle plate, a second sealing baffle plate, sound-absorbing cotton and an audio chip module, wherein a mounting hole is formed in the side wall of the box body, the middle of the first sealing baffle plate is sunken, the first sealing baffle plate is embedded in the mounting hole, the edge of the vibration film is fixedly connected with the first sealing baffle plate, the outer wall of the vibration voice coil device is fixedly connected with the first sealing baffle plate, the sound-absorbing cotton is arranged between the back surface of the vibration film and the first sealing baffle plate, the second sealing baffle plate is arranged below the first sealing baffle plate, the second sealing baffle plate, the box body, the first sealing baffle plate and the outer wall of the vibration voice coil device enclose a closed vacuum cavity, the audio chip module is arranged in the box body below the second sealing baffle plate, the vibration device specifically comprises a permanent magnet, a coil, an iron core and a vibration rod, the, the coil is arranged between the iron core and the permanent magnet, the vibrating rod is fixed at the top of the coil, and the vibrating rod penetrates through the through hole in the sound-absorbing cotton to be in contact with the vibrating membrane.

According to the above technical solution of the present invention, preferably, further include: and the power supply is arranged below the second sealing partition plate and connected to the audio chip module.

According to the above technical scheme of the utility model, preferably, the box is made by wooden material.

According to the above technical solution of the present invention, preferably, the vibrating plate is fixed to the vibrating rod head, and the vibrating plate is in contact with the vibrating membrane.

The utility model discloses the beneficial effect who gains includes at least: change traditional audio amplifier speaker structure, set up the vibrating diaphragm at the box surface and keep apart vibrating diaphragm and the inside cavity of box through first sealed partition board, the vibrating diaphragm is the sound production under the drive of vibration voice coil loudspeaker voice coil device, and the sound wave directly sends to the box outside, reduces the propagation of sound wave in the inside of stereo set box, eliminates the box standing wave. The sound absorption cotton further reduces the reflection of sound waves between the first sealing partition plate and the vibrating membrane, the vacuum cavity reduces the vibration of the box body, and the sound wave interference caused by the resonance of the box body material is reduced.

Drawings

Fig. 1 shows a schematic diagram of a wireless sound structure according to an embodiment of the present invention.

Fig. 2 shows a schematic structural diagram of a vibrating voice coil device according to an embodiment of the present invention.

In the figure: 1. the voice coil device comprises a box body, 2 a vibrating voice coil device, 3 a vibrating membrane, 4 a first sealing partition plate, 5 a second sealing partition plate, 6 a sound absorbing cotton, 7 an audio chip module, 8 a permanent magnet, 9 a coil, 10 an iron core, 11 a vibrating rod, 12 a power supply and 13 a vibrating plate.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

As shown in fig. 1 and fig. 2, the utility model provides a pair of wireless stereo set eliminates acoustic structure of box standing wave, include: the voice coil loudspeaker comprises a box body 1, a vibrating voice coil device 2, a vibrating membrane 3, a first sealing partition plate 4, a second sealing partition plate 5, sound-absorbing cotton 6 and an audio chip module 7, wherein a mounting hole is formed in the side wall of the box body, the middle of the first sealing partition plate is sunken, the first sealing partition plate is embedded in the mounting hole, the edge of the vibrating membrane is fixedly connected with the first sealing partition plate, the outer wall of the vibrating voice coil device is fixedly connected with the first sealing partition plate, the sound-absorbing cotton is arranged between the back surface of the vibrating membrane and the first sealing partition plate, the second sealing partition plate is arranged below the first sealing partition plate, the second sealing partition plate, the box body, the first sealing partition plate and the outer wall of the vibrating voice coil device are enclosed into a closed vacuum cavity, the audio chip module is arranged in the box body below the second sealing partition plate, the voice coil vibrator specifically comprises a permanent magnet 8, a coil 9, the iron core sets up in annular neodymium iron boron magnet, and the coil is arranged in between iron core and the permanent magnet, and the vibrting spear is fixed at the coil top, and the vibrting spear passes through the through-hole on inhaling the sound cotton and contacts with the vibrating diaphragm.

According to the above embodiment, preferably, the method further comprises: and a power supply 12 disposed below the second sealing spacer and connected to the audio chip module.

According to the above embodiment, preferably, the case is made of a wooden material.

According to the above embodiment, it is preferable that the vibrating rod head is fixed with the vibrating plate 13, which is in contact with the vibrating membrane.

To sum up, the utility model provides a wireless stereo set eliminates acoustic structure of box standing wave has changed traditional audio amplifier speaker structure, sets up the vibrating diaphragm at the box surface and keeps apart vibrating diaphragm and the inside cavity of box through first sealed partition board, and the vibrating diaphragm is the sound production under the drive of vibration voice coil loudspeaker voice coil device, and the sound wave is directly sent to the box outside, reduces the propagation of sound wave in the stereo set box is inside, eliminates the box standing wave. The sound absorption cotton further reduces the reflection of sound waves between the first sealing partition plate and the vibrating membrane, the vacuum cavity reduces the vibration of the box body, and the sound wave interference caused by the resonance of the box body material is reduced.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An acoustic structure for eliminating standing waves in a cabinet for a wireless sound system, comprising: box, vibration voice coil loudspeaker voice coil device, vibrating diaphragm, first sealed partition, second sealed partition, inhale sound cotton and audio chip module, wherein, be equipped with the mounting hole on the lateral wall of box, first sealed partition middle part is sunken, first sealed partition inlays in the mounting hole, the edge of vibrating diaphragm with first sealed partition fixed connection, the outer wall of vibration voice coil loudspeaker voice coil device with first sealed partition fixed connection, the back of vibrating diaphragm with be equipped with between the first sealed partition inhale the sound cotton, the second sealed partition sets up first sealed partition below, the second sealed partition with the box, first sealed partition and the outer wall of vibration voice coil loudspeaker voice coil device encloses into confined vacuum cavity, be equipped with in the below box of second sealed partition the audio chip module, vibrating device specifically includes the permanent magnet, Coil, iron core and vibrting spear, the permanent magnet is annular neodymium iron boron magnet, the iron core sets up in the annular neodymium iron boron magnet, the coil is arranged in the iron core with between the permanent magnet, the vibrting spear is fixed the coil top, the vibrting spear passes inhale the through-hole on the sound cotton with the vibrating diaphragm contact.

2. The acoustic structure for eliminating standing waves in a cabinet for a wireless sound according to claim 1, further comprising: and the power supply is arranged below the second sealing partition plate and connected to the audio chip module.

3. The acoustic structure for wireless sound cancellation of standing waves in a cabinet of claim 1, wherein the cabinet is made of a wood material.

4. An acoustic structure for canceling standing waves of a cabinet for a wireless sound according to claim 1, wherein a vibration plate is fixed to the head of the vibration rod, and the vibration plate is in contact with the vibration film.