CN213130282U

CN213130282U - Sound-proof ear muff with adjustable sound transmission channel

Info

Publication number: CN213130282U
Application number: CN202021124197.7U
Authority: CN
Inventors: 文卫平; 蓝天翔; 熊观霞; 熊彬彬; 李华伟; 姜鸿彦
Original assignee: Foshan Bozhi Medical Technology Co ltd
Current assignee: Foshan Bozhi Medical Technology Co ltd
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2021-05-07
Anticipated expiration: 2030-06-17

Abstract

The utility model discloses a give sound insulation earmuff with adjustable transaudient passageway, including the earmuff body, still include transaudient passageway and regulation and control mechanism, the transaudient passageway is installed in earmuff body and one end intercommunication to the earmuff body inside, and the other end intercommunication communicates to the earmuff body outside, and regulation and control mechanism cooperatees with the transaudient passageway, and the configuration is to regulate and control the transaudient passageway for the cross-sectional area of transaudient passageway changes. The utility model discloses a sound insulation earmuff realizes the regulation and control to the sound size of spreading into the ear through the sectional area size that changes the sound conduction passageway. When not influencing the syllable-dividing effect of sound insulation ear muff, reduce the sense of claustrophobia, and improve the afferent of external speech sound afferent, can fine improvement wear comfort level and operation security.

Description

Sound-proof ear muff with adjustable sound transmission channel

Technical Field

The utility model relates to a hearing equipment field, in particular to sound insulation earmuff with adjustable pass sound passageway.

Background

At present, the problem of noise pollution caused by factors such as buildings, traffic, industry and entertainment becomes more serious, and the protection of human hearing from sound damage becomes an important research and development.

In order to reduce the influence of noise on human body, the current method mainly controls the noise by isolating or protecting the noise source, the propagation path of the noise and the receiver, and isolating or absorbing the energy of the noise.

A plurality of ear protection devices for noise receivers are available in the market, noise entering human ears is reduced through noise reduction or sound regulation, common methods and tools comprise volume adjustment, automatic noise reduction, sound insulation earmuffs, noise reduction earplugs and the like, the methods have various characteristics, and the using scenes are different. Wherein, the ear muff type sound insulation and noise reduction mode is economical and practical and is widely adopted. However, many people feel uncomfortable about the sense of claustrophobia after wearing the earmuffs, and the speech communication is seriously influenced, even the safety problem or the communication obstacle is caused, and finally the use of the sound insulation earmuffs is abandoned or refused, so that the noise is introduced frequently, and the hearing is lost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an adjustable, change sound conduction channel sectional area's syllable-dividing earmuff, the device realizes the regulation and control to the sound size of spreading into the ear through the sectional area size that changes sound conduction channel. When not influencing the syllable-dividing effect of sound insulation ear muff, reduce the sense of claustrophobia, and improve the afferent of external speech sound afferent, can fine improvement wear comfort level and operation security, can solve one of above-mentioned problem at least.

According to the utility model discloses an aspect provides give sound insulation earmuff with adjustable transaudient passageway, including the earmuff body, still including transaudient passageway and regulation and control mechanism, the transaudient passageway is installed in earmuff body and one end intercommunication to the earmuff body inside, and the other end intercommunication communicates to the earmuff body outside, and regulation and control mechanism and transaudient passageway cooperate, configure to and regulate and control the transaudient passageway for the cross-sectional area of transaudient passageway changes.

Therefore, the sound insulation earmuff of the utility model is provided with the regulating mechanism which can regulate the sound transmission channel according to the sound intensity outside the earmuff body, when a user encounters strong noise during operation, the regulating mechanism can close the sound transmission channel to prevent the noise from entering human ears, and when the user stops operation for a short time and needs communication, the regulating mechanism can open the sound transmission channel to facilitate communication; even if the device works in a low-noise environment for a long time, the device can protect ears and can exchange the sound without causing claustrophobia and discomfort. The utility model discloses a sound insulation earmuff realizes the regulation and control to the sound size of spreading into the ear through the sectional area size that changes the sound conduction passageway. When not influencing the syllable-dividing effect of sound insulation ear muff, reduce the sense of claustrophobia, and improve the afferent of external speech sound afferent, can fine improvement wear comfort level and operation security.

In some embodiments, the regulation and control mechanism includes a controller and at least one control valve, the controller is installed inside the ear muff body, the control valve is installed in the sound transmission channel, the controller is connected with the control valve, can control the control valve, under the effect of controller, can make the cross-sectional area of the sound transmission channel of control valve department change. From this, under the effect of controller, the control valve can be accurate regulate and control to the sound transmission passageway, and then reaches the accurate control that gets into the sound volume of people's ear.

In some embodiments, the adjustment mechanism further includes a microphone assembly, the microphone assembly is mounted on the earmuff body and communicated to the outside of the earmuff body, and the microphone assembly is connected to the controller. Thus, the microphone assembly is used to pick up ambient sound.

In some embodiments, the regulating mechanism further comprises an amplifier and an a/D converter, one end of the a/D converter is connected to the microphone assembly, the other end of the a/D converter is connected to the controller, one end of the amplifier is connected to the controller, and the other end of the amplifier is connected to the control valve. Therefore, the microphone assembly is used for collecting environmental sound, collected sound signals are input into the controller after being converted by the A/D converter, the controller analyzes and calculates environmental sound pressure and outputs digital command signals to the amplifier according to the environmental sound pressure, so that the state of the control valve (the state of the control valve is open, closed and proportional open) is changed, and the adjustment of the cross-sectional area of a sound transmission channel at the control valve is realized.

In some embodiments, a solenoid is provided in the control valve, and one end of the amplifier is connected to the controller and the other end is connected to the solenoid of the control valve. Therefore, the microphone assembly is used for collecting environmental sound, collected sound signals are input into the controller after being converted by the A/D converter, the controller analyzes and calculates environmental sound pressure and outputs digital command signals to the amplifier according to the environmental sound pressure, and therefore the electromagnet is driven to control the states of the control valve (the states of the control valve are open, closed and proportional open), and the adjustment of the cross section area of a sound transmission channel at the control valve is achieved.

In some embodiments, the adjustment mechanism further comprises a control button disposed on the earmuff body and connected to the controller. Thus, the control buttons may be keys for different functions, including but not limited to keys for setting whether to start/stop the regulating mechanism, keys for adjusting the sound pressure range, etc.

In some embodiments, the sound transmission channel is in a Z shape, openings are arranged at two ends of the sound transmission channel, one opening is communicated with the outside of the earmuff body, and the other opening is communicated with the inside of the earmuff body. From this, the sound conduction passageway is used for establishing the sound channel in the earmuff outer and the earmuff, makes external sound spread into the space in the earmuff, owing to be "Z" style of calligraphy design, under the completely open state, low frequency noise is difficult for getting into, strengthens the syllable-dividing effect of earmuff body.

In some embodiments, the number of the control valves is two, and the first control valve and the second control valve are respectively installed at the same position of the parallel sides of the "Z" shaped sound transmission channel. Therefore, the two control valves have better control effect and more accurate control.

In some embodiments, the control valve is a micro flow proportional control valve.

In some embodiments, the controller is a digital signal processor.

The utility model has the advantages that:

the utility model discloses a sound insulation earmuff is provided with the regulation and control mechanism, and this mechanism can adjust the transaudient passageway according to the sound intensity outside the earmuff body, and the regulation and control mechanism can be closed the transaudient passageway when the user meets strong noise during operation, prevents that the noise from getting into the human ear, and when the short-term stop operation and need to communicate, the regulation and control mechanism can open the transaudient passageway, is convenient for communicate; even if the device works in a low-noise environment for a long time, the device can protect ears and can exchange the sound without causing claustrophobia and discomfort. The utility model discloses a sound insulation earmuff realizes the regulation and control to the sound size of spreading into the ear through the sectional area size that changes the sound conduction passageway. When not influencing the syllable-dividing effect of sound insulation ear muff, reduce the sense of claustrophobia, and improve the afferent of external speech sound afferent, can fine improvement wear comfort level and operation security.

Drawings

Fig. 1 is a simplified structural schematic view of an adjustable sound-insulating earmuff for a sound transmission channel according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a circuit control structure of the sound-transmitting channel adjustable sound-insulating earmuff according to an embodiment of the present invention;

fig. 3 is a schematic diagram of the circuit control configuration of the sound transmission channel adjustable acoustical earmuffs of fig. 1.

Reference numerals in FIGS. 1 to 3: 1-an earmuff body; 2-a sound transmission channel; 2 a-a first acoustical channel; 2 b-a second sound transmission channel; 2 c-a middle sound transmission channel; 3-a regulating mechanism; 31-a controller; 32-a control valve; 321-an electromagnet; 33-a microphone assembly; 34-an amplifier; a 35-A/D converter; 36-control buttons; 32 a-a first control valve; 32 b-second control valve.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments and accompanying drawings.

Fig. 1 to 3 schematically show an adjustable sound transmission channel soundproof earmuff according to an embodiment of the present invention.

As shown in figures 1-3, the sound-proof earmuff with the adjustable sound transmission channel comprises an earmuff body 1, a sound transmission channel 2 and a regulating mechanism 3. The sound transmission channel 2 is installed in the earmuff body 1, one end of the sound transmission channel is communicated to the inside of the earmuff body 1, and the other end of the sound transmission channel is communicated to the outside of the earmuff body 1. The regulating mechanism 3 is fitted to the sound transmission channel 2 and configured to regulate the sound transmission channel 2 so that the cross-sectional area of the sound transmission channel 2 changes.

The control mechanism comprises a controller 31 and at least one control valve 32. The controller 31 is installed inside the cap body 1, and the control valve 32 is installed in the sound transmission channel 2. The controller 31 is connected to the control valve 32 and can control the control valve 32. The cross-sectional area of the sound transmission channel 2 at the control valve 32 can be varied by the controller 31. From this, under controller 31's effect, control valve 32 can be accurate regulate and control to vocal passageway 2, and then reaches the accurate control of the volume of sound that gets into the people's ear. The controller 31 of the present embodiment is a digital signal processor, i.e., a DSP chip.

The steering mechanism 3 further comprises a microphone assembly 33. The microphone assembly 33 is mounted on the earmuff body 1 and communicated with the outside of the earmuff body 1, and the microphone assembly 33 is connected with the controller 31. Thus, the microphone assembly 33 is used to pick up ambient sound. The microphone assembly 33 of the present embodiment may be a single microphone or a plurality of microphones commonly used in the market, a sound inlet hole provided on the shell of the earmuff body 1, and the like.

The regulating mechanism 3 further comprises an amplifier 34 and an a/D converter 35. The a/D converter 35 has one end connected to the microphone unit 33 and the other end connected to the controller 31, and the amplifier 34 has one end connected to the controller 31 and the other end connected to the control valve 32. An electromagnet 321 is provided in the control valve 32, and one end of the amplifier 34 is connected to the controller 31 and the other end is connected to the electromagnet 321 of the control valve 32. Therefore, the microphone assembly 33 is used for collecting the environmental sound, the collected sound signal is converted by the a/D converter 35 and then input to the controller 31, the controller 31 analyzes and calculates the environmental sound pressure and outputs a digital command signal to the amplifier 34 according to the environmental sound pressure, so as to drive the electromagnet 321 to control the state of the control valve 32 (the state of the control valve 32 is three, i.e., on, off and proportional on), and thus the adjustment of the cross-sectional area of the sound transmission channel 2 at the control valve 32 is realized. The control valve 32 of the present embodiment is a commercially available micro flow rate proportional solenoid valve for controlling the flow rate.

The adjusting mechanism 3 further includes a control button 36, and the control button 36 is disposed on the ear muff body 1 and connected to the controller 31. Thus, the control button 36 may be a key for different functions, including but not limited to a key for setting whether to start/stop the regulating mechanism 3, a key for adjusting the sound pressure range, and the like.

The sound transmission channel 2 of the present embodiment may be a plastic or metal pipe shaped in a "Z" shape. The both ends of transaudient passageway 2 all are equipped with the opening, and one end opening intercommunication ear muff body 1 is outside, and other end opening communicates to ear muff body 1 inside. From this, pass sound channel 2 and be used for establishing the sound channel in the earmuff outer and the earmuff, make external sound spread into the space in the earmuff, owing to be "Z" style of calligraphy design, under the completely open state, low frequency noise is difficult for entering, strengthens the syllable-dividing effect of earmuff body 1.

The number of the control valves 32 of the present embodiment is two, and the control valves are a first control valve 32a and a second control valve 32 b. The first control valve 32a and the second control valve 32b are respectively installed at the same portions of the parallel sides of the zigzag sound transmission passage 2. Therefore, the two control valves 32 have better control effect and more accurate control. The Z-shaped sound transmission channel 2 of the present embodiment is divided into three sections, which are a first sound transmission channel 2a, a second sound transmission channel 2b, and an intermediate sound transmission channel 2 c. The two parallel sides are a first sound transmission channel 2a and a second sound transmission channel 2b, respectively. A first control valve 32a is mounted to the first sound-transmitting passage 2a, and a second control valve 32b is mounted to the second sound-transmitting passage 2 b.

Thus, as shown in fig. 3, there are also two corresponding amplifiers 34, namely a first amplifier 34 and a second amplifier 34; the number of the corresponding electromagnets 321 is also two, and the two corresponding electromagnets 321 are respectively a first electromagnet 321 and a second electromagnet 321; the first electromagnet 321 is used for controlling the first control valve 32a, and the second electromagnet 321 is used for controlling the second control valve 32 b; there are also two corresponding amplifiers 34, a first amplifier 34 and a second amplifier 34.

The specific use mode can be as follows:

the user can be through control button 36 on the ear muff body 1, wherein 1 button is used for starting/stopping control mechanism 3, and this control button 36 defaults to the open state, and is acquiesced to starting control mechanism 3, at this moment, can preset the device: the sound pressure threshold for turning on the regulating mechanism 3 is 0dB, and the sound pressure threshold for turning off the regulating mechanism 3 is 80 dB. The microphone assembly 33 collects sound of the surrounding environment, when sound pressure of the collected sound is 0-80 dB, the opening and closing degree of the control valve 32 is automatically adjusted by the control valve 32 according to the input sound pressure intensity, the smaller the sound pressure is, the more the sound pressure is, and on the contrary, the larger the sound pressure is, the smaller the sound pressure is. Thereby effectively according to the cross-section of environmental sound pressure automatic control sound transmission passageway 2, realize variably passing sound passageway 2. Therefore, when a user encounters strong noise during operation, the channel is closed to prevent the noise from entering ears, when the user stops operation for a short time and needs communication, the channel is opened to facilitate communication, and the user can not only protect the ears but also communicate when working in a long-time low-noise environment, and does not feel uncomfortable due to claustrophobia. This function can be switched off by means of the control button 36 if the use of the regulating organ 3 is not required.

In addition, in order to make the device more personal and convenient to use, the control button 36 may include a sound pressure range adjustment reducing button and a sound pressure range adjustment increasing button, allowing the user to set the sound pressure threshold for turning the device on and off.

Therefore, the sound insulation earmuff of the utility model is provided with the regulating mechanism 3, the regulating mechanism 3 can regulate the sound transmission channel 2 according to the sound intensity outside the earmuff body 1, when the user encounters strong noise in operation, the regulating mechanism 3 can close the sound transmission channel 2 to prevent the noise from entering human ears, when the user stops operation for a short time and needs communication, the regulating mechanism 3 can open the sound transmission channel 2 to facilitate communication; even if the device works in a low-noise environment for a long time, the device can protect ears and can exchange the sound without causing claustrophobia and discomfort. The utility model discloses a sound insulation earmuff realizes the regulation and control to the sound size of spreading into the ear through the sectional area size that changes sound transmission channel 2. When not influencing the syllable-dividing effect of sound insulation ear muff, reduce the sense of claustrophobia, and improve the afferent of external speech sound afferent, can fine improvement wear comfort level and operation security.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. Pass syllable-dividing earmuff with adjustable sound channel, including earmuff body (1), its characterized in that still includes sound channel (2) and regulation and control mechanism (3), sound channel (2) are installed in earmuff body (1) and one end communicates to earmuff body (1) inside, and the other end communicates to earmuff body (1) outside, regulation and control mechanism (3) cooperate with sound channel (2), configure to and regulate and control sound channel (2) for the cross-sectional area of sound channel (2) changes.

2. The acoustic muff with adjustable sound transmission channels according to claim 1, characterised in that the regulating mechanism (3) comprises a controller (31) and at least one control valve (32), the controller (31) is mounted inside the muff body (1), the control valve (32) is mounted in the sound transmission channel (2), the controller (31) is connected with the control valve (32), the control valve (32) can be controlled, and the cross-sectional area of the sound transmission channel (2) at the control valve (32) can be changed under the action of the controller (31).

3. The acoustic earmuff with adjustable sound transmission channels according to claim 2, characterised in that the adjusting mechanism (3) further comprises a microphone assembly (33), which microphone assembly (33) is mounted to the earmuff body (1) and communicates to the outside of the earmuff body (1), which microphone assembly (33) is connected to the controller (31).

4. The acoustic earmuff with adjustable sound transmission channels according to claim 3, characterised in that the adjusting mechanism (3) further comprises an amplifier (34) and an A/D converter (35), the A/D converter (35) being connected to the microphone assembly (33) at one end and to the controller (31) at the other end, the amplifier (34) being connected to the controller (31) at one end and to the control valve (32) at the other end.

5. The acoustic earmuffs with adjustable sound transmission channels according to claim 4, characterised in that an electromagnet (321) is arranged in the control valve (32), and the amplifier (34) is connected with the controller (31) at one end and with the electromagnet (321) of the control valve (32) at the other end.

6. The adjustable sound-insulating earmuff according to any of the claims 2-5, wherein the adjusting mechanism (3) further comprises a control button (36), and the control button (36) is arranged on the earmuff body (1) and connected with the controller (31).

7. The sound-insulating earmuff with the adjustable sound transmission channel as claimed in any one of claims 2-5, wherein the sound transmission channel (2) is Z-shaped, and openings are arranged at both ends of the sound transmission channel (2), one end of the sound transmission channel is communicated with the outside of the earmuff body (1), and the other end of the sound transmission channel is communicated with the inside of the earmuff body (1).

8. The acoustic muffs for sound transmission with adjustable channels, as set forth in claim 7, characterized in that the control valves (32) are two, a first control valve (32a) and a second control valve (32b), respectively, and the first control valve (32a) and the second control valve (32b) are respectively installed at the same position on the parallel sides of the "Z" -shaped sound transmission channel (2).

9. The adjustable acoustical earmuff of any one of claims 2-5, where the control valve (32) is a micro flow proportional control valve.

10. The acoustic earmuff with adjustable sound transmission channels according to any of the claims 2-5, characterised in that the controller (31) is a digital signal processor.