A listening room with an operable window

Abstract

This invention relates to the field of audiometry chamber technology, specifically to an audiometry chamber with an opening window, comprising an audiometry chamber body equipped with a soundproof door and an observation window; the audiometry chamber further includes: a placement cavity disposed on the side wall of the audiometry chamber body, the bottom of the placement cavity being horizontal; and a delivery unit comprising two opening window assemblies, the two opening window assemblies being respectively disposed on the inner and outer side walls of the audiometry chamber body, the two opening window assemblies being symmetrical about the placement cavity, and only one of the two opening window assemblies being able to open at any given time. This invention can promptly deliver items to test subjects experiencing physical or emotional discomfort to alleviate discomfort, and also avoids repeated testing that could aggravate discomfort.

Description

Technical Field

[0001] This invention relates to the field of audiometry chamber technology, specifically to an audiometry chamber with an openable window. Background Technology

[0002] The existing audiometry room mainly consists of a sealed space, a silent ventilation system, audiometry equipment, an observation window, and a door. The observation window is fixedly installed on the side wall of the sealed space, and the door is also installed on the side wall of the sealed space.

[0003] A search revealed that a simple-to-install audiometry chamber disclosed in Chinese Patent Publication No. CN215858244U has a structure similar to existing audiometry chambers. The audiometry chamber includes a panel, a soundproof wall panel, a top panel, a bottom assembly, a main observation window, and a door panel.

[0004] However, during the audiometry process, the person being tested needs to stay alone in a closed space for a period of time. Some people experience varying degrees of discomfort in this confined space, such as dizziness, palpitations, and tinnitus. Therefore, external personnel need to assess the individual's condition and determine whether to provide soothing items, drinking water, tissues, etc., to avoid disrupting the testing process. However, the confined space must remain completely sealed during the audiometry process. Current methods of delivering items only involve opening the door and having external personnel deliver the items into the testing room. Opening the door breaks the sealed state of the space, allowing external sounds to intrude, thus requiring a pause in the audiometry process and disrupting the overall testing rhythm. Some frequencies need to be retested. However, retesting individuals who are experiencing discomfort in the confined space would prolong their time there, potentially worsening their discomfort. This not only exacerbates the discomfort but also lengthens the testing cycle, reduces efficiency, and leads to inaccurate results. Summary of the Invention

[0005] To address the aforementioned issues, a hearing testing chamber with an opening window is provided. This chamber features a horizontal placement cavity on its side wall, coupled with a delivery unit consisting of two symmetrical opening window assemblies. The two sets of opening windows are designed to not open simultaneously, thus changing the traditional method of delivering items by opening a soundproof door. The entire process can be completed without disrupting the chamber's airtight structure, effectively blocking external noise intrusion. Hearing tests can continue uninterrupted, allowing for timely delivery of items to alleviate discomfort for test subjects experiencing physical or emotional distress, while also avoiding repeated testing that could worsen discomfort.

[0006] To address the problems of the prior art, the present invention provides a listening chamber with an openable window, comprising a listening chamber body equipped with a soundproof door and an observation window; The audiometry room also includes: The placement cavity is located on the side wall of the main body of the audiometer chamber, and the bottom of the placement cavity is horizontal. The delivery unit includes two opening window assemblies, which are respectively disposed on the inner side wall and the outer side wall of the listening chamber body. The two opening window assemblies are symmetrical about the placement cavity, and only one of the two opening window assemblies can be opened at any given time.

[0007] Preferably, the listening chamber further includes two extension slots, which are arranged in a straight line along the horizontal direction and symmetrically arranged about the placement cavity. Both extension slots are connected to the placement cavity, and the ends of the two extension slots away from the placement cavity protrude from the inner wall and outer wall of the listening chamber, respectively. The cross-section of the extension slots is circular. The window opening component includes: The window itself is made of soundproof glass; The sound insulation part has a ring structure and is fitted around the periphery of the window body. The axis of the sound insulation part is collinear with the axis of the extension groove. The sound insulation part has a telescopic function along its own axis and can be inserted and fitted with the extension groove.

[0008] Preferably, the extension groove has an embedding groove at one end near the placement cavity. The embedding groove is annular and coaxial with the extension groove. The sound insulation part includes a sound insulation pad with an annular structure. The sound insulation pad can be inserted into the embedding groove and the sound insulation pad is an airbag structure.

[0009] Preferably, a movable frame is provided around the periphery of the window body, and an annular placement groove is provided on the movable frame. The placement groove is coaxial with the sound insulation pad and is used to place the sound insulation part. The sound insulation component also includes: The base plate has a ring-shaped structure, and the base plate is coaxial with the sound insulation pad and is located at the end of the sound insulation pad away from the placement cavity; An inner telescopic sleeve is disposed between the base plate and the movable frame along the axis of the base plate, and the two ends of the inner telescopic sleeve are fixedly connected to the bottom of the base plate and the placement groove, respectively. An outer telescopic sleeve is coaxially sleeved around the inner telescopic sleeve. The two ends of the outer telescopic sleeve are fixedly connected to the bottom of the base plate and the bottom of the placement groove, respectively. An annular air chamber is formed between the inner telescopic sleeve and the outer telescopic sleeve. A first air pump is connected to the outside of the air chamber.

[0010] Preferably, the outer telescopic sleeve is fixedly fitted with sound-insulating cotton, the sound-insulating cotton is annular, and the sound-insulating cotton can slide into the extension groove, the sound-insulating cotton slides into the extension groove, and the sound-insulating cotton is interference-fitted with the extension groove.

[0011] Preferably, a support ring is coaxially provided on the inner side of the outer telescopic sleeve, and the support ring is used to support the sound insulation cotton.

[0012] Preferably, the inflation cavity is provided with a guide component, the extension direction of the guide component is parallel to the axis of the base plate, and the two ends of the guide component are respectively connected to the bottom of the base plate and the bottom of the placement groove.

[0013] Preferably, a vent is provided on the side wall of the placement cavity, and a second air pump is connected to the vent.

[0014] Preferably, a linear actuator is horizontally disposed on one side of the movable frame, the linear actuator being used to drive the movable frame to move horizontally, and the moving direction of the movable frame being perpendicular to the extending direction of the extending groove.

[0015] Preferably, the listening room also includes: A movable block is directly mounted on the drive end of the linear actuator. A groove is provided on the upper part of the movable block. The extending direction of the groove is perpendicular to the moving direction of the movable block. The side of the movable frame extends into the groove and slides into the groove. The load-bearing frame is fitted around the movable frame and fixedly connected to the main body of the listening chamber.

[0016] The advantages of this invention compared to the prior art are: 1. This invention, by setting a horizontal placement cavity on the side wall of the audiometry chamber and combining it with a delivery unit composed of two sets of symmetrically opening window assemblies, and limiting the opening of the two sets of opening window assemblies to not open simultaneously, changes the traditional method of delivering items by opening a soundproof door in an audiometry chamber. The entire process of delivering items can be completed without damaging the airtight structure of the audiometry chamber, effectively blocking the intrusion of external noise. Hearing tests can continue uninterrupted, allowing for timely delivery of items to alleviate discomfort for test subjects experiencing physical or emotional discomfort, and avoiding repeated testing that could worsen discomfort. It also reduces waiting time and repetitive operation time, improves work efficiency, and prevents data accuracy from being affected by test interruptions or external interference. Combined with the existing observation window, the internal status can be monitored in real time, making the audiometry process more user-friendly and practical.

[0017] 2. By adding an extension groove connected to the placement cavity, and combining the window body made of soundproof glass with the retractable soundproof part to form an opening window assembly, the extension groove limits the assembly's operating trajectory. After the retractable soundproof part is inserted into the extension groove, it seals gaps, forming a basic soundproof structure with the soundproof glass, effectively blocking external sound waves from entering the room. Simultaneously, an annular embedding groove is set at the end of the extension groove, paired with an airbag-type soundproof pad. Utilizing the self-adaptive deformation characteristics of the airbag to fill the fitting gaps, it eliminates sealing dead angles, improves the sealing and soundproofing capabilities of the connection point, and also uses the embedding groove to limit the soundproof pad's position, preventing it from shifting or falling off during long-term use, ensuring the long-term stability of the soundproofing effect in the listening room.

[0018] 3. By employing a pneumatically driven telescopic structure, coupled with guide components, sound insulation cotton, support rings, a pneumatic adjustment structure, and a linear drive mechanism, the opening window assembly achieves automated and stable operation. The pneumatic drive operates silently without any abnormal noise. The guide components ensure precise coaxial telescopic movement, reducing component wear and the probability of failure. The sound insulation cotton forms a secondary sound-absorbing structure, which, combined with a multi-layered sound insulation structure, enhances the overall sound insulation level. The support ring resists compression pressure, protects the telescopic sleeve and sound insulation cotton, and extends the equipment's lifespan. The second air pump regulates the air pressure inside and outside the cavity, eliminating negative pressure resistance and allowing the opening window assembly to open and close more smoothly. The linear drive enables automated translational operation, simplifying the delivery process and improving efficiency. The overall structure has a high degree of integration, facilitating assembly and maintenance, and fully meeting the requirements of high-precision hearing testing. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a listening chamber with an openable window according to the present invention.

[0020] Figure 2 This is a three-dimensional schematic diagram of one of the opening window components in a listening chamber with an opening window according to the present invention, when the window is opened.

[0021] Figure 3 This invention relates to a listening chamber with an openable window. Figure 2 A magnified view of a portion of point A in the middle.

[0022] Figure 4 This is a cross-sectional three-dimensional schematic diagram of a listening chamber with an openable window according to the present invention.

[0023] Figure 5 This invention relates to a listening chamber with an openable window. Figure 4 A magnified view of a portion of point B in the middle.

[0024] Figure 6 This invention relates to a listening chamber with an openable window. Figure 4 A magnified view of a portion of point C.

[0025] Figure 7This is a partial cross-sectional three-dimensional schematic diagram of a listening chamber with an openable window after the main body of the listening chamber has been removed.

[0026] Figure 8 This invention relates to a listening chamber with an openable window. Figure 7 A magnified view of a portion of point D.

[0027] Figure 9 This invention relates to a listening chamber with an openable window. Figure 7 A magnified view of a portion of point E in the middle.

[0028] Figure 10 This is a three-dimensional schematic diagram of the sound insulation part of the opening window assembly in a listening room with an opening window retracted, according to the present invention.

[0029] The diagram is labeled as follows: 1. Audiometry chamber body; 11. Soundproof door; 12. Observation window; 13. Placement cavity; 131. Vent; 14. Extension groove; 141. Embedded groove; 2. Delivery unit; 21. Opening window assembly; 211. Window body; 212. Soundproofing part; 2121. Soundproofing pad; 2122. Base plate; 2123. Inner telescopic sleeve; 2124. Outer telescopic sleeve; 2125. Soundproofing cotton; 2126. Support ring; 213. Moving frame; 2131. Placement groove; 214. Guide assembly; 2141. Guide rod; 2142. Guide sleeve; 215. Linear actuator; 2151. Moving block; 2152. Groove; 216. Force-bearing frame. Detailed Implementation

[0030] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figures 1 to 4 A listening chamber with an openable window includes a listening chamber body 1 equipped with a soundproof door 11 and an observation window 12; The audiometry room also includes: The placement cavity 13 is disposed on the side wall of the audiometry chamber body 1, and the bottom of the placement cavity 13 is horizontal; Delivery unit 2 includes two opening window assemblies 21, which are respectively disposed on the inner side wall and the outer side wall of the listening chamber body 1. The two opening window assemblies 21 are symmetrical about the placement cavity 13, and only one of the two opening window assemblies 21 can be opened at any given time.

[0032] The main body of the listening room 1 is also equipped with a ventilation unit. The ventilation unit is a silent ventilation unit. The specific structure of the ventilation unit is existing technology and will not be described here.

[0033] In the normal hearing test operation, the hearing tester enters the hearing test chamber 1 and conducts hearing tests using the sealed hearing test chamber 1. The observation window 12 set on the side wall allows external staff to observe the real-time status of the hearing tester inside the hearing test chamber 1 from multiple angles. The soundproof door 11 is in a closed state to ensure the soundproof and sealed environment inside the hearing test chamber 1 and meet the basic operating conditions for hearing tests. At this time, the two opening window components 21 in the delivery unit 2 seal the two ends of the placement cavity 13 respectively to maintain the sealed and soundproof state of the placement cavity 13 and the entire hearing test chamber 1.

[0034] During the hearing test, if external staff observe through the observation window 12 that the person being tested inside the hearing chamber 1 is experiencing physical or emotional discomfort such as palpitations, dizziness, or anxiety, and determine that it is unnecessary to open the soundproof door 11 to directly transfer the person out of the hearing chamber 1, then the delivery unit 2 can deliver the corresponding items to the person inside to soothe their emotions and alleviate their physical discomfort. When the item delivery operation is carried out, taking advantage of the characteristic that only one of the two opening window components 21 can be opened at a time, the opening window component 21 located on the outer side wall of the hearing chamber 1 is opened first. During this stage, the inner opening window component 21 remains closed, effectively maintaining the soundproof and airtight environment inside the hearing chamber 1 and preventing external noise from affecting the hearing test operation. External staff place the small comfort items, drinking water, tissues, etc., to be delivered inside the horizontally structured placement cavity 13. The horizontal structure of the placement cavity 13 ensures the stable placement of various delivered items, preventing them from tipping over or slipping. After the items are placed, close the opening window assembly 21 on the outer side wall of the audiometry chamber 1. After the outer opening window assembly 21 is completely closed and restored to a sealed state, open the opening window assembly 21 on the inner side wall of the audiometry chamber 1. At this time, the audiometry personnel inside the audiometry chamber 1 can directly take the items inside the placement cavity 13. After the item retrieval operation is completed, close the inner opening window assembly 21, so that the placement cavity 13 is back to a sealed state with both ends blocked. The audiometry chamber 1 returns to the initial sealed and soundproof audiometry operation state, and the hearing test can be carried out seamlessly.

[0035] By incorporating a horizontally oriented placement cavity 13 on the side wall of the audiometry chamber 1 and a delivery unit 2 consisting of two symmetrically arranged opening window assemblies 21, and limiting the opening of only one of the two opening window assemblies 21 to a single moment, this method eliminates the need to open the soundproof door 11 to deliver items, unlike traditional audiometry chambers. The entire audiometry process can be completed without disrupting the sealed structure of the audiometry chamber 1, effectively avoiding external noise intrusion caused by opening the soundproof door 11. This eliminates the need to pause the hearing test for item delivery, avoids disrupting the overall audiometry rhythm, and eliminates the need to address any interference. Repeated testing at the same frequency not only allows for the timely delivery of items to soothe and alleviate discomfort when the person being tested experiences discomfort, but also shortens the time they spend in the enclosed environment. This fundamentally avoids the problem of repeated testing exacerbating discomfort, while significantly reducing the overall hearing test cycle and improving the overall efficiency of hearing tests. Furthermore, it avoids the negative impact of various factors such as test interruptions, repeated testing, and personnel discomfort on the test data, ensuring the accuracy of the hearing test results. In addition, when combined with the original observation window 12, it can achieve multi-angle monitoring of the internal personnel status, further enhancing the practicality and humanization of the hearing test operation.

[0036] Reference Figure 3 , Figure 4 and Figure 7 The listening chamber also includes two extension slots 14, which are arranged in a straight line along the horizontal direction and symmetrically arranged about the placement cavity 13. Both extension slots 14 are connected to the placement cavity 13. The ends of the two extension slots 14 away from the placement cavity 13 extend out from the inner wall and outer wall of the listening chamber, respectively. The cross-section of the extension slots 14 is circular. The window opening component 21 includes: The window body 211 is made of soundproof glass; The sound insulation part 212 has a ring structure and is sleeved on the periphery of the window body 211. The axis of the sound insulation part 212 is collinear with the axis of the extension groove 14. The sound insulation part 212 has a telescopic function along its own axis direction. The sound insulation part 212 can be inserted and cooperated with the extension groove 14.

[0037] Soundproof glass typically uses multiple panes of glass arranged at intervals, with the air between adjacent panes evacuated to a vacuum, or multi-layered laminated glass, or a combination of vacuum glass and angled glass.

[0038] Under normal testing conditions, the sound insulation part 212 is inserted into the extension slot 14, working together with the window body 211 to seal the extension slot 14, forming a complete sealed sound insulation structure. When performing item delivery operations, the sound insulation part 212 retracts and disengages from the extension slot 14, releasing the seal on the extension slot 14, thereby cooperating with the opening window assembly 21 to complete the opening and closing action. This structure provides a dedicated movable sealed space for the opening window assembly 21 through the extension slot 14, limiting the operating trajectory of the opening window assembly 21. At the same time, by using the window body 211 with multiple sound insulation structures in conjunction with the retractable sound insulation part 212, while ensuring the normal opening and closing of the opening window assembly 21 and realizing the item delivery function, the gaps in the extension slot 14 are completely sealed, effectively blocking sound waves from entering the listening chamber body 1 through the extension slot 14, further optimizing the sound insulation environment inside the listening chamber body 1, and avoiding the problem of external noise interfering with hearing testing.

[0039] Reference Figure 3 , Figure 6 and Figure 8 The extension groove 14 has an embedding groove 141 at one end near the placement cavity 13. The embedding groove 141 has an annular structure and is coaxial with the extension groove 14. The sound insulation part 212 includes a sound insulation pad 2121 with an annular structure. The sound insulation pad 2121 can be inserted into the embedding groove 141 and the sound insulation pad 2121 has an airbag structure.

[0040] With the opening window assembly 21 closed and locked, the sound insulation part 212 extends and drives the sound insulation pad 2121 to embed into the corresponding embedding groove 141. The airbag-type sound insulation pad 2121 can automatically adapt to the insertion space, fully filling the tiny gaps between the sound insulation pad 2121 and the embedding groove 141, compensating for the sealing dead angles caused by the insertion and mating of rigid components. Compared with conventional fixed sound insulation structures, the airbag-type sound insulation pad 2121 can significantly improve the sealing and sound insulation performance at the connection of the extension groove 14, blocking the sound wave propagation channel at the gaps; at the same time, the embedding groove 141 limits and fixes the sound insulation pad 2121, preventing the sound insulation pad 2121 from shifting or falling off during long-term extension and insertion operations, ensuring the sealing stability of the opening window assembly 21 after long-term use, continuously maintaining the airtight sound insulation state inside the listening chamber 1, and ensuring the stable conduct of hearing testing operations.

[0041] Reference Figure 5 , Figure 6 and Figure 10 The window body 211 is provided with a movable frame 213 on its periphery. The movable frame 213 has an annular placement groove 2131. The placement groove 2131 is coaxial with the sound insulation pad 2121 and is used to place the sound insulation part 212. The sound insulation part 212 also includes: The base plate 2122 has a ring structure. The base plate 2122 is coaxial with the sound insulation pad 2121 and is located at the end of the sound insulation pad 2121 away from the placement cavity 13. An inner telescopic sleeve 2123 is disposed between the base plate 2122 and the movable frame 213 along the axis of the base plate 2122. The two ends of the inner telescopic sleeve 2123 are fixedly connected to the bottom of the base plate 2122 and the placement groove 2131, respectively. An outer telescopic sleeve 2124 is coaxially sleeved around the inner telescopic sleeve 2123. The two ends of the outer telescopic sleeve 2124 are fixedly connected to the bottom of the base plate 2122 and the bottom of the placement groove 2131, respectively. An annular inflation chamber is formed between the inner telescopic sleeve 2123 and the outer telescopic sleeve 2124. A first air pump is connected to the outside of the inflation chamber.

[0042] When the opening window assembly 21 needs to be opened, the first air pump draws air from the inflation chamber, and the inner and outer telescopic sleeves 2124 contract synchronously, causing the base plate 2122 and the sound insulation pad 2121 to retract and be stored in the placement slot 2131 of the movable frame 213, thus releasing the blockage of the extension slot 14. When the opening window assembly 21 needs to be closed, the first air pump fills the inflation chamber with gas, pushing the inner and outer telescopic sleeves 2124 to extend. The base plate 2122 pushes the sound insulation pad 2121 into the embedding slot 141 and presses the sound insulation pad 2121 to complete the seal. This structure is driven by pneumatic pressure, enabling the automatic extension and retraction of the sound insulation section 212. The structure operates more smoothly and quietly, and compared to mechanical transmission, it does not produce mechanical noise that would interfere with the listening environment. At the same time, the integrated sound insulation section 212 has a higher degree of integration, making it easier to assemble and maintain. The pneumatic-driven extension and retraction method can accurately control the extension and retraction stroke of the sound insulation pad 2121 through air pressure monitoring, ensuring the insertion accuracy of the sound insulation pad 2121 and the embedded groove 141, further improving the stability of the device and the sound insulation effect.

[0043] Reference Figure 5 and Figure 6 The outer telescopic sleeve 2124 is fixedly sleeved with sound insulation cotton 2125. The sound insulation cotton 2125 is annular and can slide with the extension groove 14. The sound insulation cotton 2125 slides into the extension groove 14 and the sound insulation cotton 2125 and the extension groove 14 are interference fit.

[0044] During the extension and retraction of the sound insulation section 212 and the opening and closing of the window assembly 21, the sound insulation cotton 2125 slides synchronously along the axis of the extension groove 14, following the outer extension sleeve 2124. When the window assembly 21 is fully closed, the interference-fit sound insulation cotton 2125 tightly adheres to the inner wall of the extension groove 14. Relying on its own porous sound absorption characteristics, it performs secondary absorption and weakening of residual sound waves that seep in through the gaps in the extension groove 14. Combined with the window body 211 and the airbag-type sound insulation pad 2121, it forms a multi-layered sound insulation protection system. By adding sound insulation cotton 2125 to strengthen the sound absorption capacity at the connection point of the extension groove 14, it makes up for the shortcomings of the single sound insulation structure. Utilizing the sound loss characteristics in solid sound-absorbing media, it further reduces the probability of external noise penetration. The dual sound insulation structure complements each other, significantly improving the overall sound insulation level of the window assembly 21 in the closed state, and meeting the requirements of the high-precision hearing test operating environment.

[0045] Reference Figure 5 The outer telescopic sleeve 2124 has a support ring 2126 coaxially arranged on its inner side, and the support ring 2126 is used to support the sound insulation cotton 2125.

[0046] Because the sound insulation cotton 2125 and the extension groove 14 are in a state of interference fit for a long time, the extension groove 14 will continuously exert inward squeezing force on the outer sound insulation cotton 2125. This force will indirectly affect the outer telescopic sleeve 2124, which is very likely to cause deformation, wrinkles or even damage to the outer telescopic sleeve 2124, affecting the airtightness of the inflation chamber and the service life of the components. The support ring 2126 can provide all-round support for the outer telescopic sleeve 2124 and the sound insulation cotton 2125 from the inside, balance the external squeezing force, limit the deformation space of the outer telescopic sleeve 2124, and keep the outer telescopic sleeve 2124 always in a regular ring structure. This not only protects the outer telescopic sleeve 2124 and maintains the air pressure stability of the inflation chamber, ensuring the normal operation of the sound insulation part 212's telescopic operation, but also allows the sound insulation cotton 2125 to always be evenly attached to the inner wall of the extension groove 14, ensuring that the sound absorption effect of the sound insulation cotton 2125 is not affected by deformation, and extending the service life of the entire opening window assembly 21.

[0047] Reference Figure 6 and Figure 7 The inflation chamber is provided with a guide component 214. The extension direction of the guide component 214 is parallel to the axis of the base plate 2122. The two ends of the guide component 214 are respectively connected to the bottom of the base plate 2122 and the bottom of the placement groove 2131.

[0048] The guide assembly 214 includes a guide rod 2141 and a guide sleeve 2142. The guide rod 2141 is fixedly disposed at the end of the base plate 2122 away from the sound insulation pad 2121, parallel to the axis of the base plate 2122. The guide sleeve 2142 is fixedly disposed at the bottom of the placement groove 2131, parallel to the axis of the base plate 2122. The guide rod 2141 extends into the guide sleeve 2142 and slides in cooperation with the guide sleeve 2142.

[0049] During the process of the first air pump inflating and deflating the inflation chamber and causing the inner and outer telescopic sleeves 2124 to extend or retract, the guide rod 2141 slides synchronously inside the guide sleeve 2142 along with the base plate 2122. This limits the sound insulation part 212 to only perform linear telescopic movements along the axial direction, avoiding problems such as radial offset, tilting, and twisting of the inner and outer telescopic sleeves 2124 under air pressure. The guide assembly 214 can improve the coaxiality and operational stability of the telescopic operation of the sound insulation part 212, prevent the sound insulation pad 2121 from shifting and failing to accurately insert into the embedding groove 141, and prevent local wear and air leakage caused by long-term eccentric movement of the telescopic sleeves, reducing the probability of device failure and ensuring the accuracy of opening and closing operations.

[0050] Reference Figure 3 and Figure 7 A vent 131 is provided on the side wall of the placement cavity 13, and a second air pump is connected to the vent 131.

[0051] During the opening phase, when the soundproofing part 212 retracts and disengages from the extension groove 14, the second air pump injects gas into the placement cavity 13 through the vent 131 to balance the air pressure inside and outside the placement cavity 13, eliminate negative pressure resistance, and reduce the operating resistance when the soundproofing part 212 retracts and the window body 211 moves, thus preventing negative pressure jamming from affecting opening efficiency. During the closing phase, when the soundproofing part 212 extends and is inserted for sealing, the second air pump extracts excess air from the placement cavity 13, adjusts the air pressure inside the cavity, and assists the soundproofing pad 2121 to quickly and smoothly embed into the insertion groove 141, while simultaneously cooperating with the airbag-type soundproofing pad 2121 to complete the sealing operation. By adjusting the air pressure to eliminate the operational drawbacks caused by negative pressure, the smoothness of the opening and closing action of the window assembly 21 is improved, the wear and tear of parts is reduced, the overall operation process is optimized, and the overall efficiency of item delivery is indirectly improved.

[0052] Reference Figure 7 A linear actuator 215 is horizontally arranged on one side of the moving frame 213. The linear actuator 215 is used to drive the moving frame 213 to move horizontally. The moving direction of the moving frame 213 is perpendicular to the extending direction of the extending groove 14.

[0053] After the soundproofing section 212 is fully retracted and stored inside the placement slot 2131 of the moving frame 213, the linear actuator 215 outputs driving force, causing the moving frame 213, window body 211, and soundproofing section 212 to move horizontally as a whole. This allows the extension slot 14 and placement cavity 13 to smoothly form a communication channel with the outside world, enabling staff to place and retrieve items. After the items are delivered, the linear actuator 215 reverses and drives the moving frame 213 to reset, so that the soundproofing section 212 can extend to complete the sealing closure. Using the linear actuator 215 as a power source enables the automatic horizontal sliding opening and closing of the window assembly 21, eliminating the need for manual operation of the opening structure. This avoids the anxiety and discomfort caused by audiometry personnel being unfamiliar with the opening method. At the same time, the automated drive method has a faster response speed, simplifies the item delivery process, further shortens the item delivery time, and improves the overall efficiency of audiometry operations.

[0054] Reference Figure 9 The audiometry room also includes: The moving block 2151 is directly disposed on the driving end of the linear actuator 215. The upper part of the moving block 2151 is provided with a groove 2152. The extending direction of the groove 2152 is perpendicular to the moving direction of the moving block 2151. The side of the moving frame 213 extends into the groove 2152 and slides in cooperation with the groove 2152. The force-bearing frame 216 is covered around the movable frame 213 and is fixedly connected to the listening chamber body 1.

[0055] The moving block 2151 transmits the driving force of the linear actuator 215 to the moving frame 213. The groove 2152 and the moving frame 213 have a sliding fit structure. When the sound insulation part 212 is inserted into the extension groove 14 and the sound insulation pad 2121 abuts against the embedded groove 141, the sound insulation part 212 generates a reaction force on the moving bracket. In order to prevent the reaction force from acting directly on the linear actuator 215 through the moving block 2151, the groove 2152 is provided on the moving block 2151, so that the moving frame 213 slides with the groove 2152. When the reaction force occurs, the moving frame 213 abuts against the force-bearing frame 216, thus preventing damage to the linear actuator 215.

[0056] Working principle: During testing, the frequency bands that are difficult to hear are tested first, followed by the frequency bands that are easy to hear. When delivering items, the frequency bands that are easy to hear are tested. If it is observed that the person being tested is uncomfortable or uneasy in the testing chamber 1, and it is determined that it is not necessary to open the soundproof door 11 to move the person out, then in order to soothe the person's emotions, an item to calm them can be delivered to the person through the delivery unit 2.

[0057] During the audiometry test, under normal circumstances, the two opening window assemblies 21 respectively block the two extension slots 14. When it is necessary to deliver an item, the opening window assembly 21 can open or close automatically, avoiding any further anxiety or discomfort for the audiometry personnel in the audiometry chamber 1 due to unfamiliarity with the opening method of the opening window assembly 21. When delivering an item, the opening window assembly 21 located on the outside of the audiometry chamber 1 opens first, while the opening window assembly 21 located on the inside of the audiometry chamber 1 is in the closed state. Therefore, when the opening window assembly 21 on the outside of the audiometry chamber 1 opens, it will not damage the sound insulation environment inside the audiometry chamber 1. The personnel outside place the item to be delivered into the placement cavity 13. Since the bottom of the placement cavity 13 is a horizontal structure, the delivered item can be stably placed in the placement cavity 13. Subsequently, the opening window assembly 21 located on the outside of the audiometry chamber body 1 closes. After the opening window assembly 21 closes, the opening window assembly 21 located on the inside of the audiometry chamber body 1 opens, allowing the audiometry personnel to retrieve items from the placement cavity 13. After the items are retrieved, the opening window assembly 21 located on the inside of the audiometry chamber body 1 closes. To improve safety, a sensing device can be added to the outside of the force-bearing frame 216 to detect whether a person's limbs have passed through the force-bearing frame 216, preventing injury to the person's limbs when the opening window assembly 211 automatically opens or closes.

[0058] The specific opening and closing process of the opening window assembly 21 is as follows: First, when the opening window assembly 21 is opened, the first air pump extracts the air from the inflation chamber, causing the inner telescopic sleeve 2123 and the outer telescopic sleeve 2124 to gradually contract. Under the guidance of the guide assembly 214, the inner telescopic sleeve 2123 and the outer telescopic sleeve 2124 can extend and retract synchronously. At the same time, the second air pump inflates the placement chamber 13 through the vent 131 to prevent the sound insulation part 212 from sliding out of the extension groove 14 due to the negative pressure, which would cause excessive resistance to sliding out. When the soundproofing part 212 is fully retracted, it is located in the placement slot 2131 of the moving frame 213. The linear actuator 215 drives the moving frame 213 to move through the moving block 2151, so that the moving frame 213 drives the window body 211 and the soundproofing part 212 to move horizontally. As the moving frame 213 moves, the extension slot 14 of the placement cavity 13 near the outside of the listening chamber body 1 is connected to the outside. At this time, outside personnel can place items to be delivered into the placement cavity 13.

[0059] After placement, the linear actuator 215 drives the moving frame 213 to reset. After reset, the first air pump inflates the inflation chamber. Guided by the guide assembly 214, the inner telescopic sleeve 2123 and the outer telescopic sleeve 2124 extend synchronously, pushing the sound insulation pad 2121 into the extension groove 14 through the base plate 2122. At this time, the second air pump extracts air from the placement chamber 13 through the vent 131, improving the smoothness of the sound insulation part 212 sliding into the extension groove 14. When the sound insulation pad 2121 is inserted into the embedding groove 141 and the air pressure in the inflation chamber reaches the specified pressure, the first air pump stops inflating. At this time, the sound insulation pad 2121 deforms under the compression of the base plate 2122, ensuring the sealing of the placement chamber 13. The sound insulation pad 2121 adopts an airbag structure, which utilizes the principle that the sound loss in air is greater than the sound loss in solids, thus improving the sound insulation effect. Meanwhile, sound-absorbing cotton 2125 is also fitted around the outer telescopic sleeve 2124, and the sound-absorbing cotton 2125 is interference-fitted with the extension groove 14. The sound-absorbing effect of the sound-absorbing cotton 2125 further absorbs sound and improves the sound insulation effect of the opening window assembly 21. However, because the sound-absorbing cotton 2125 is interference-fitted with the extension groove 14, the sound-absorbing cotton 2125 will exert a certain reaction force on the outer telescopic sleeve 2124, causing the outer telescopic sleeve 2124 with the sound-absorbing cotton 2125 to be prone to deformation. In order to prevent the outer telescopic sleeve 2124 from being damaged due to deformation, a support ring 2126 is set inside the outer telescopic sleeve 2124. The support ring 2126 supports the sound-absorbing cotton 2125 and prevents the outer telescopic sleeve 2124 from being deformed due to external reaction force, thus preventing damage.

[0060] In addition, the window body 211 is made of soundproof glass, so the window body 211 has a soundproof effect. By opening the observation window 12 and the opening window assembly 21 on the listening chamber body 1, it is possible to observe the internal situation of the listening chamber from multiple angles.

[0061] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A listening chamber with an openable window, comprising a listening chamber body (1) with a soundproof door (11) and an observation window (12). Its features are, The audiometry room also includes: The placement cavity (13) is located on the side wall of the main body (1) of the listening chamber, and the bottom of the placement cavity (13) is horizontal; The delivery unit (2) includes two opening window assemblies (21). The two opening window assemblies (21) are respectively disposed on the inner side wall and the outer side wall of the listening chamber body (1). The two opening window assemblies (21) are symmetrical about the placement cavity (13), and only one of the two opening window assemblies (21) can be opened at the same time.

2. The listening chamber with an openable window according to claim 1, characterized in that, The listening chamber also includes two extension slots (14), which are arranged in a straight line along the horizontal direction and symmetrically arranged about the placement cavity (13). Both extension slots (14) are connected to the placement cavity (13). The ends of the two extension slots (14) away from the placement cavity (13) pass through the inner wall and outer wall of the listening chamber, respectively. The cross-section of the extension slots (14) is circular. The opening window component (21) includes: The window body (211) is made of soundproof glass; The sound insulation part (212) has a ring structure and is fitted around the window body (211). The axis of the sound insulation part (212) is collinear with the axis of the extension groove (14). The sound insulation part (212) has a telescopic function along its own axis direction. The sound insulation part (212) can be inserted and cooperated with the extension groove (14).

3. The listening chamber with an openable window according to claim 2, characterized in that, The extension groove (14) has an embedding groove (141) at one end near the placement cavity (13). The embedding groove (141) is annular and coaxial with the extension groove (14). The sound insulation part (212) includes a sound insulation pad (2121) with an annular structure. The sound insulation pad (2121) can be inserted into the embedding groove (141) and the sound insulation pad (2121) is an airbag structure.

4. The listening chamber with an openable window according to claim 3, characterized in that, The window body (211) is provided with a movable frame (213) on its periphery. The movable frame (213) has an annular placement groove (2131) on it. The placement groove (2131) is coaxial with the sound insulation pad (2121) and is used to place the sound insulation part (212). The sound insulation part (212) also includes: The base plate (2122) has a ring structure. The base plate (2122) is coaxial with the sound insulation pad (2121) and is located at the end of the sound insulation pad (2121) away from the placement cavity (13). An inner telescopic sleeve (2123) is disposed between the base plate (2122) and the movable frame (213) along the axis of the base plate (2122). The two ends of the inner telescopic sleeve (2123) are fixedly connected to the bottom of the base plate (2122) and the placement groove (2131), respectively. An outer telescopic sleeve (2124) is coaxially sleeved around the inner telescopic sleeve (2123). The two ends of the outer telescopic sleeve (2124) are fixedly connected to the bottom of the base plate (2122) and the placement groove (2131), respectively. An annular inflation chamber is formed between the inner telescopic sleeve (2123) and the outer telescopic sleeve (2124). A first air pump is connected to the outside of the inflation chamber.

5. A listening chamber with an openable window according to claim 4, characterized in that, The outer telescopic sleeve (2124) is fixedly fitted with sound insulation cotton (2125). The sound insulation cotton (2125) is annular and can slide with the extension groove (14). The sound insulation cotton (2125) slides into the extension groove (14) and the sound insulation cotton (2125) is interference-fitted with the extension groove (14).

6. A listening chamber with an openable window according to claim 5, characterized in that, A support ring (2126) is coaxially provided on the inner side of the outer telescopic sleeve (2124), and the support ring (2126) is used to support the sound insulation cotton (2125).

7. A listening chamber with an openable window according to claim 4, characterized in that, A guide component (214) is provided in the inflation cavity. The extension direction of the guide component (214) is parallel to the axis of the base plate (2122). The two ends of the guide component (214) are respectively connected to the bottom of the base plate (2122) and the placement groove (2131).

8. A listening chamber with an openable window according to claim 2, characterized in that, A vent (131) is provided on the side wall of the placement cavity (13), and a second air pump is connected to the vent (131).

9. A listening chamber with an openable window according to claim 4, characterized in that, A linear actuator (215) is horizontally arranged on one side of the moving frame (213). The linear actuator (215) is used to drive the moving frame (213) to move horizontally. The moving direction of the moving frame (213) is perpendicular to the extending direction of the extension groove (14).

10. A listening chamber with an openable window according to claim 9, characterized in that, The audiometry room also includes: The moving block (2151) is directly mounted on the driving end of the linear actuator (215). The upper part of the moving block (2151) is provided with a groove (2152). The extending direction of the groove (2152) is perpendicular to the moving direction of the moving block (2151). The side of the moving frame (213) extends into the groove (2152) and slides in cooperation with the groove (2152). The force-bearing frame (216) is covered around the movable frame (213) and fixedly connected to the listening chamber body (1).

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