KR20230136077A - Venting device - Google Patents

Abstract

The venting device is disposed within or may be disposed within a wearable sound device. This venting device includes an anchor structure, a film structure and an actuator. The film structure includes an anchor end secured to the anchor structure and a free end, and the film structure is configured to form a vent or close a vent. An actuator is placed on the film structure. The film structure divides the space into a first volume and a second volume, and when a vent is formed, the first volume and the second volume are connected through the vent. The venting device is controlled by the controller to seal the vent when the controller decides to close the vent.

Description

Venting device {VENTING DEVICE}

This application is a continuation-in-part of U.S. Application No. 17/842,810, filed on June 17, 2022, and this application is a continuation-in-part of U.S. Application No. 17/344,980, filed on June 11, 2021, this application Claims the benefit of U.S. Provisional Application No. 63/050,763, filed July 11, 2020, and also claims the benefit of U.S. Provisional Application No. 63/051,885, filed July 14, 2020, also filed April 7, 2021 Claims the benefit of U.S. Provisional Application No. 63/171,919, filed on Jan. Additionally, U.S. Application No. 17/842,810 claims the benefit of U.S. Provisional Application No. 63/320,703, filed March 17, 2022. Moreover, this application claims the benefit of U.S. Provisional Application No. 63/342,161, filed May 16, 2022. The contents of these applications are incorporated herein by reference.

This application relates to a venting device, and more specifically, to a venting device capable of eliminating the occlusion effect.

Nowadays, wearable sound devices such as in-ear (inserted into the ear canal) earbuds, on-ear or over-ear earphones are used to produce or receive sound. It is commonly used for. Magnet and moving coil (MMC) based microspeakers have been in development for decades and are widely used in many such devices. Recently, Micro Electro Mechanical System (MEMS) acoustic transducers using semiconductor manufacturing processes can become sound generating/receiving components in wearable sound devices.

The occlusion effect is due to the sealed volume of the ear canal, resulting in a large sound pressure perceived by the listener. For example, when a listener performs a specific movement that generates bone conduction sound (e.g., walking, jogging, talking, eating, touching an acoustic transducer, etc.) and is using a wearable sound device (e.g., the wearable sound device is placed in the ear canal). when filled), an occlusion effect occurs. The occlusion effect produces an acceleration-based sound pressure level (SPL) (SPL ∝ a = dD ² /dt ² ) and compression-based SPL generation (SPL ∝ D), it is particularly strong in the bass side. For example, a displacement of just 1 μm at 20 Hz will cause SPL = 1 μm/25 mm atm = 106 dB in an occluded ear canal (25 mm is the average length of the adult ear canal). Therefore, when an occlusion effect occurs, the listener hears occlusion noise and the quality of the listener experience is poor.

In traditional technology, wearable sound devices have an airflow channel that exists between the ear canal and the surroundings outside the device, so that the pressure due to the occlusion effect can be released from this airflow channel to suppress the occlusion effect. However, because the airflow channel is always present, the frequency response shows a significant drop in SPL at low frequencies (e.g., below 500 Hz). For example, if a traditional wearable sound device uses a typical 115dB speaker driver, the SPL at 20Hz is much lower than 110dB. Additionally, the larger the size of the fixed vent configured to form the airflow channel, the greater the SPL drop will be, and also the more difficult the water and dust resistance functions will be.

In some cases, traditional wearable sound devices may use stronger speaker drivers than a typical 115dB speaker driver to compensate for the loss of SPL at low frequencies due to the presence of airflow channels. For example, assuming a loss of SPL of 20 dB, the speaker driver needed to maintain the same 115 dB SPL with an airflow channel, when used in a sealed ear canal, would be 135 dB SPL. However, for 10x stronger bass output, the amount of movement of the speaker film also needs to be increased by a factor of 10, which means that the height of both the coil and the flux gap of the speaker driver needs to be increased by a factor of 10. Therefore, it is difficult to make traditional wearable sound devices with strong speaker drivers small in size and light in weight.

Therefore, there is a need to improve the prior art to suppress the occlusion effect.

Therefore, the basic object of the present invention is to provide a venting device that can suppress the occlusion effect.

One embodiment of the present invention provides a venting device that is placed within or to be placed within a wearable sound device. This venting device includes an anchor structure, a film structure and an actuator. The film structure includes an anchor end secured to the anchor structure and a free end, and the film structure is configured to form a vent or close a vent. An actuator is placed on the film structure. The film structure divides the space into a first volume and a second volume, and when a vent is formed, the first volume and the second volume are connected through the vent. The venting device is controlled by the controller to seal the vent when the controller decides to close the vent.

These and other objects of the present invention will no doubt become apparent to those skilled in the art after reading the following detailed description of the preferred embodiments shown in the various figures and drawings.

1 is a schematic cross-sectional view showing a venting device and a housing structure according to a first embodiment of the present invention.
Figure 2 is a schematic plan view showing a venting device according to a first embodiment of the present invention.
3 to 5 are schematic cross-sectional views showing the film structure of the venting device at different positions according to the first embodiment of the present invention.
Figure 6 is a schematic diagram showing the frequency response of a venting device with the film structure at different positions, according to a first embodiment of the invention.
Figure 7 is a schematic diagram showing a wearable sound device with a venting device according to an embodiment of the present invention.
Figure 8 is a schematic diagram showing a wearable sound device with a venting device according to an embodiment of the present invention.
9 and 10 are schematic cross-sectional views showing the film structure of the venting device in different modes according to the second embodiment of the present invention.
Figure 11 is a schematic plan view showing a portion of the film structure of the venting device according to the third embodiment of the present invention.
Figure 12 is a schematic cross-sectional view showing the film structure of the venting device according to the third embodiment of the present invention.
Figure 13 is a schematic cross-sectional view showing the film structure of the venting device according to the fourth embodiment of the present invention.
Figure 14 is a schematic cross-sectional view showing the film structure of the venting device according to the fifth embodiment of the present invention.
15 to 17 are schematic cross-sectional views showing the film structure of the venting device according to the sixth embodiment of the present invention.
15 and 19 are schematic cross-sectional views showing the film structure of the venting device in different modes according to the seventh embodiment of the present invention.
Figure 20 is a schematic plan view showing a venting device according to an eighth embodiment of the present invention.
21 to 23 are schematic cross-sectional views showing the film structure of the venting device in different modes according to the ninth embodiment of the present invention.
Figure 24 is a schematic cross-sectional view showing the film structure of the venting device according to the tenth embodiment of the present invention.

In order to provide those skilled in the art with a better understanding of the present invention, preferred embodiments of key components and typical material or scope parameters will be detailed in the following description. This preferred embodiment of the invention is shown in the accompanying drawings with numbered elements to illustrate in detail the contents and effects to be achieved. The drawings are simplified schematics and the material and parameter ranges of the major components are exemplary based on the current state of the art and thus provide a clearer description of the basic structure, practice or operation method of the present invention and the components and components related to the present invention. Please note that it only represents combinations. Components will actually become more complex and the range of parameters or materials used may evolve with future technological developments. Additionally, for convenience of explanation, components shown in the drawings may not represent their actual numbers, shapes, and dimensions, and details may be adjusted according to design requirements.

In the following description and claims, the terms “comprehensive,” “includes,” and “having” are used in an open-ended manner and should therefore be construed to mean “including but not limited to.” Accordingly, when the terms "comprise", "comprise" and/or "having" are used in the description of the invention, they indicate the presence of corresponding features, areas, steps, operations and/or elements; It is not limited to the presence of one or more of its corresponding features, regions, steps, operations and/or components.

In the description and claims below, when “an A1 component is formed by/of B1,” it means that B1 is present in the formation of the A1 component or that B1 is used in the formation of the A1 component, and other features, regions, or , the presence and use of one or more of the steps, operations and/or components are not excluded from the formation of the A1 component.

In the following description and claims, the term "substantially" generally means that small deviations may or may not be present. For example, “substantially parallel” and “substantially along” mean that the angle between the two components may be less than or equal to a certain critical angle, such as 10 degrees, 5 degrees, 3 degrees, or 1 degree. means. For example, the term “substantially aligned” means that the deviation between two components may be less than or equal to a certain threshold difference, such as 2 μm or 1 μm. For example, the term “substantially the same” means that the deviation is within, for example, 10% of a given value or range, or within 5%, 3%, 2%, 1%, or 0.5% of a given value or range.

In the detailed description and the claims below, the term "horizontal direction" means a direction generally parallel to the horizontal plane, the term "horizontal plane" generally means a surface parallel to the X and Y directions in the drawings (i.e. In the present invention, the and Z directions are perpendicular to each other. In the detailed description and the claims below, the term “plan view” generally refers to a view seen along the vertical direction. In the detailed description and the claims below, the term “cross-sectional view” refers to a view of a structure cut along a vertical direction, generally along a horizontal direction.

Terms such as first, second, third, etc. may be used to describe various components, but these components are not limited by the terms. The term is used in the specification only to distinguish one component from another, and the term has no relation to the order of manufacture unless otherwise stated in the specification. Claims may not use the same terminology, but instead may use terms such as first, second, third, etc. in relation to the order in which elements are claimed. Accordingly, in the description below, a first element may in some claims become a second element.

It should be noted that the technical features of the different embodiments described below may be replaced, recombined, or mixed with each other to form other embodiments without departing from the spirit of the present invention.

In the present invention, a venting device (or MEMS venting device) capable of suppressing the occlusion effect may be related to an acoustic device and/or disposed within an acoustic device (eg, a wearable sound device). For example, the venting device may be placed within a wearable sound device (eg, an in-ear device), but is not limited to this.

In the present invention, an acoustic device may include an acoustic transducer configured to perform acoustic conversion, whereby a signal (e.g., an electrical signal or another suitable type of signal) is converted into a sound wave or a sound wave is converted into another suitable type. It can be converted into a signal (e.g., an electrical signal). In some embodiments, the acoustic transducer may be, but is not limited to, a sound generating device, speaker, microspeaker, or other suitable device for converting electrical signals into sound waves. In some embodiments, the acoustic transducer may be, but is not limited to, a sound measurement device, microphone, or other suitable device for converting sound waves into electrical signals. Due to the presence of the venting device of the present invention, the occlusion effect is suppressed, so that the user can have a good experience of the acoustic transformation provided by the acoustic device.

In the following, the venting device of the present invention relates to and can be placed within a wearable sound device configured to generate sound waves, and the following description is designed to enable those skilled in the art to better understand the present invention.

1 to 5, FIG. 1 is a schematic cross-sectional view showing a venting device and a housing structure according to a first embodiment of the present invention, and FIG. 2 shows a venting device according to a first embodiment of the present invention. 3 to 5 are schematic cross-sectional views showing the film structure of the venting device at different positions according to the first embodiment of the present invention. As shown in FIGS. 1 and 2, the venting device 100 may be disposed at the base BS. The base (BS) may be rigid or flexible, and the base (BS) may be made of silicon, germanium, glass, plastic, quartz, sapphire, metal, polymer (e.g., polyimide (PI), polyethylene terephthalate (PET)), any It may include other suitable materials or a combination thereof. For example, the base (BS) may be, but is not limited to, a circuit board comprising a laminate (e.g., copper clad laminate, CCL), a land grid array (LGA) board, or another suitable board comprising a conductive material. No. In some embodiments, the base (BS) can be a substrate.

In Figure 1, the base BS has a top surface SH parallel to the X and Y directions (i.e., the top surface SH of the base BS is a horizontal plane). In Figure 1, the normal direction of the upper surface SH of the base BS is parallel to the Z direction.

The venting device 100 includes at least one anchor structure 140 and a film structure 110 secured by the anchor structure 140, and the anchor structure 140 is disposed outside the film structure 110. . Film structure 110 and anchor structure 140 may include any suitable material(s). In some embodiments, film structure 110 and anchor structure 140 are silicon (e.g., single crystalline silicon or polycrystalline silicon), silicon compounds (e.g., silicon carbide, silicon oxide), germanium, germanium compounds (e.g. , gallium nitride or gallium arsenide), gallium, gallium compounds, stainless steel, or a combination thereof may be individually included, but is not limited thereto. In some embodiments, film structure 110 and anchor structure 140 may have the same material.

Upon operation of the venting device 100, the film structure 110 may be actuated to move and the anchor structure 140 may be stationary. That is, the anchor structure 140 may be a fixed end (or fixed edge) relative to the film structure 110 during operation of the venting device 100. In some embodiments, film structure 110 may be actuated to move upward and downward, but is not limited to this. As used herein, the terms “moving upward” and “moving downward” indicate that the film structure 110 moves substantially along the Z direction.

1 and 2, the film structure 110 of the venting device 100 includes at least one slit 130, so that the film structure 110 has at least one anchor structure 140 secured to the anchor structure 140. It may have one anchor end (AE) and at least one free end (FE) that is not permanently fixed to any component inside the venting device 100 . In some embodiments, film structure 110 may be divided into a plurality of flaps by slit(s) 130 . For example, as shown in FIGS. 1 and 2, the film structure 110 may be divided into a first flap 112 and a second flap 114 by a slit 130, and the first flap 112 and the second flap 114 are separated from each other, and the first flap 112 has a first anchor end AE1 (or first anchor edge) fixed to the anchor structure 140 and the first anchor end AE1. ), and the second flap 114 has a second anchor end AE2 (or a second free edge) opposite the anchor structure 140. anchor edge) and a second free end FE2 (or second free edge) opposite this second anchor end AE2, wherein the two opposing side walls of the slit 130 have a first free end ( FE1) and the second free end FE2 respectively (i.e. one side wall belongs to the first free end FE1 and the other side wall belongs to the second free end FE2). For example, the slit 130 may be a boundary of the film structure 110 and/or a boundary of a flap, but is not limited thereto.

In the present invention, the number of slit(s) 130 included in the film structure 110 can be adjusted based on the requirement(s), and the slit(s) 130 can be selected from any of the film structures 110. It can be placed in an appropriate position, and can also have any suitable floor plan pattern. For example, the slit 130 may be a straight slit, a curved slit, a combination of straight slits, a combination of curved slits, or a combination of straight slit(s) and curved slit(s).

The venting device 100 includes an actuator 120 disposed on the film structure 110 and configured to actuate the film structure 110 . For example, in Figure 1, actuator 120 may be in contact with film structure 110, but is not limited to this. As shown in FIG. 1, the actuator 120 may not completely overlap the film structure 110 in the Z direction, but is not limited thereto.

As shown in FIGS. 1 and 2 , actuator 120 may include a plurality of actuating portions disposed on a plurality of flaps of film structure 110 . For example (as shown in Figure 1), the film structure 110 has a first flap 112 and a second flap 114, so that the actuator 120 has a first flap disposed on the first flap 112. It includes an operating portion 122 and a second operating portion 124 disposed on the second flap 114 .

The actuator 120 has a monotonic electromechanical conversion function for the movement of the film structure 110 along the Z direction. In some embodiments, actuator 120 may include, but is not limited to, a piezoelectric actuator, electrostatic actuator, nanoscopic electrostatic actuator (NED) actuator, electromagnetic actuator, or any other suitable actuator. For example, in one embodiment, actuator 120 may include a piezoelectric actuator comprising two electrodes and a layer of piezoelectric material disposed between the electrodes (e.g., lead zirconate titanate, PZT), wherein the piezoelectric material layer can actuate the film structure 110 based on a drive signal received by the electrode (e.g., a drive voltage and/or a drive voltage difference between the two electrodes); It is not limited. For example, in other embodiments, actuator 120 may include an electromagnetic actuator (e.g., a planar coil) that moves the film structure based on a received drive signal (e.g., drive current) and magnetic field. 110 may be operated (i.e., the film structure 110 may be operated by electromagnetic force), but is not limited thereto. For example, in another embodiment, actuator 120 may include an electrostatic actuator (e.g., a conductive plate) or a NED actuator, wherein the received drive signal (e.g., drive voltage) and the electrostatic The film structure 110 may be operated based on a field (i.e., the film structure 110 may be operated by electrostatic force), but is not limited thereto. Hereinafter, the actuator 120 may be, for example, a piezoelectric actuator.

In this embodiment, the venting device 100 may optionally include a chip (CP) disposed on the upper surface (SH) of the base (BS), and this chip (CP) includes at least the film structure 110 and the anchor structure. It may include 140 and an actuator 120. The manufacturing method of the chip (CP) is not limited. For example, in this embodiment, the chip CP may be formed into a MEMS chip by at least one semiconductor process, but the present invention is not limited thereto.

Additionally, as shown in FIG. 1 , a chamber CB may exist between the base BS and the film structure 110 . As shown in FIG. 1 , the base BS may further include a rear opening (BVT), and the chamber CB may be connected to the rear (i.e., the base) outside the venting device 100 through the rear opening (BVT). (BS) can be connected to the rear space).

As shown in FIG. 1 , the venting device 100 and the base BS are disposed within a housing structure (HSS) inside the wearable sound device (WSD). In FIG. 1, the housing structure (HSS) may have a first housing opening (HO1) and a second housing opening (HO2), and the first housing opening (HO1) may be connected to the external auditory canal of the user of the wearable sound device, 2 The housing opening (HO2) can be connected to the periphery of the wearable sound device (WSD), and the film structure 110 is between the first housing opening (HO1) and the second housing opening (HO2). It should be noted that the periphery of the Wearable Sound Device (WSD) may not be inside the ear canal (eg, the periphery of the Wearable Sound Device (WSD) may be connected directly to space outside the ear). Additionally, in FIG. 1, the chamber CB may be present between the base BS and the film structure 110, such that the chamber CB may be positioned between the rear opening BVT of the base BS and the rear opening BVT of the base BS and the first portion of the housing structure HSS. 2 It can be connected to the surroundings of the wearable sound device (WSD) through the housing opening (HO2).

As shown in FIG. 1, the film structure 110 of the venting device 100 divides the space formed inside the housing structure (HSS) into a first volume (VL1) connected to the external auditory canal of the wearable sound device user and a wearable sound device ( It is divided into a second volume (VL2) connected to the periphery of WSD). In Figure 1, the first volume VL1 is connected to the first housing opening HO1 of the housing structure HSS, and the second volume VL2 is connected to the second housing opening HO2 of the housing structure HSS. do. Accordingly, the first volume (VL1) is connected to the external auditory canal of the user of the wearable sound device through the first housing opening (HO1), and the second volume (VL2) is connected to the wearable sound device (WSD) through the second housing opening (HO2). connected to the surroundings. As shown in Figure 1, chamber CB is part of second volume VL2.

The film structure 110 can be actuated by the actuator 120 to move upward and downward. Accordingly, as shown in FIGS. 1 to 5, the first free end FE1 of the first flap 112 can be configured to perform a first up and down movement, and the second free end FE1 of the second flap 114 The end FE2 may be configured to perform a second up and down movement. Based on the requirement(s), the movement direction of the first up and down movement of the first free end FE1 may be the same or opposite to the movement direction of the second up and down movement of the second free end FE2.

1-5, the film structure 110 can be actuated by the actuator 120 to move upward and downward so that the vent 130T associated with the slit 130 is formed or closed. (i.e., the film structure 110 is configured to form a vent 130T or close the vent 130T), and the vent 130T is formed between two opposing side walls of the slit 130 (i.e., the vent ( 130T) is formed due to the slit 130). When venting device 100 is in a first mode that temporarily closes vent 130T (e.g., FIGS. 1 and 3 ), first volume VL1 is substantially separated from second volume VL2. So, the surroundings of the wearable sound device (WSD) and the external auditory canal of the user of the wearable sound device are substantially separated (isolated) from each other. Conversely, when venting device 100 is in a second mode that causes vent 130T to be temporarily formed (e.g., FIG. 4 ), first volume VL1 flows through vent 130T to second volume ( VL2), so the surroundings of the wearable sound device (WSD) and the ear canal of the user of the wearable sound device are connected to each other. In the present invention, since the vent 130T is temporarily closed in the first mode and the vent 130T is temporarily formed in the second mode, the first volume VL1 and the second volume VL2 in the first mode The air flow flowing therebetween is much smaller than the air flow flowing between the first volume VL1 and the second volume VL2 in the second mode.

In the “ vent 130T closed” condition, it is difficult for air to flow between the first volume VL1 and the second volume VL2 through the space between the two opposing side walls of the slit 130. In the “vent 130T formed/open” condition, air easily flows between the first volume VL1 and the second volume VL2 through the space between the two opposing side walls of the slit 130. In some embodiments, the size of the opening between two opposing sidewalls of slit 130 in the first mode (i.e., vent 130T is closed) is the same as in the second mode (i.e., vent 130T is formed/open). ) is much smaller than the size of the opening between the two opposing side walls of the slit 130. For example, when the vent 130T is closed, the film structure 110 is parallel or substantially parallel to the top surface SH of the base BS, and the two opposing side walls of the slit 130 are partially horizontal. or completely overlap each other, but are not limited to this. For example, when the vent 130T is formed/opened, the film structure 110 is not parallel or substantially parallel to the top surface SH of the base BS.

1 and 3 show an example of the venting device 100 in the first mode. 1 and 3, the film structure 110 is actuated and maintained in a first position parallel or substantially parallel to the top surface SH of the base BS to cause the vent 130T to be closed. . For example, in Figures 1 and 3, two opposing side walls of slit 130 partially or completely overlap each other in the horizontal direction such that vent 130T is closed. 1 and 3, the film structure 110 has a first flap 112 and a second flap 114 so that the first flap 112 and the second flap 114 close the vent 130T. It is operated and maintained in the first position in order to do so.

1 and 3, as the film structure 110 is actuated and maintained in the first position, a gap 130P exists between the two opposing side walls of the slit 130. For example, the gap 130P may exist between two opposing side walls of the slit 130 in a plane parallel to the upper surface SH of the base BS, and the gap 130P may be formed in the width direction along the slit 130. Refers to space, and the width of the gap 130P may be the same or substantially the same as the width of the slit 130, but is not limited thereto. The width of the slit 130 (width of gap 130P) may be designed based on requirement(s). For example, the width of the slit 130 may be 5 μm or less, 3 μm or less, 2 μm or less, or 1 μm to 2 μm, but is not limited thereto.

The width of the gap 130P must be sufficiently small, so that the air flow through the gap 130P (i.e. a narrow channel) can be significantly attenuated due to the viscous forces/resistance along the walls of the airflow path (boundary layer in fluid dynamics field) known as effect). Accordingly, the air flow flowing between the first volume VL1 and the second volume VL2 through the gap 130P in the first mode may be significantly small or negligible. In other words, when the venting device 100 is in the first mode, the vent 130T is closed and even sealed.

In the first mode, since the airflow flowing between the first volume (VL1) and the second volume (VL2) through the gap (130P) in the first mode is quite small or negligible, the wearable sound device user can hear the entire audio frequency. A high-performance acoustic conversion (e.g., high-performance sound) will be experienced at the range, where the acoustic conversion is provided by an acoustic transducer of a wearable sound device (WSD).

Figure 4 shows an example of the venting device 100 in the second mode. As shown in FIG. 4 , first flap 112 (e.g., first free end FE1) can be actuated to move in a first direction and second flap 114 (e.g., second free end FE1) can be actuated to move in a first direction. (FE2)) may be actuated to move in a second direction opposite to the first direction, so that a vent 130T is temporarily formed between two opposing side walls of the slit 130 in the Z direction. That is, the moving direction of the first up and down movement of the first free end FE1 of the first flap 112 is opposite to the moving direction of the second up and down movement of the second free end FE2 of the second flap 114. . For example, the first and second directions may be substantially parallel to the Z direction. For example (as shown in Figure 4), one of the first free end FE1 and the second free end FE2 is moved above the first position and the flat position (the flat position is of the base BS). parallel to the upper surface SH), the other of the first free end FE1 and the second free end FE2 moves down from the first position and the flat position, but is not limited to this.

When the vent 130T is temporarily opened, an air flow may be formed between the first volume VL1 and the second volume VL2 due to the pressure difference between the two sides of the film structure 110, thus creating an occlusion effect. The pressure is released (i.e., the pressure difference between the external auditory canal and the surroundings of the wearable sound device (WSD) can be released through the air flow flowing through the vent 130T), thereby suppressing the occlusion effect.

In the present invention, the size of the vent 130T may be determined by the distance between the first free end FE1 of the first flap 112 and the second free end FE2 of the second flap 114. The effect of suppressing the occlusion effect can be improved by increasing the size of the vent 130T.

Accordingly, as shown in FIGS. 3 and 4, in the first mode, a gap 130P exists between the two opposing side walls of the slit 130, and in the second mode, the gap 130P exists between the two opposing side walls of the slit 130. There is a vent (130T) between them. The air flow through gap 130P in the first mode may be much smaller than the air flow through vent 130T in the second mode (e.g., the air flow through gap 130P in the first mode The flow may be negligible or 10 times lower than the air flow through vent 130T in the second mode). In other words, the width of the gap 130P is sufficiently small, so that the air flow/leakage through the gap 130P in the first mode is negligible compared to the air flow through the vent 130T in the second mode ( e.g. less than 10% of the air flow in the second mode).

When switching from the first mode as shown in Figure 3 to the second mode as shown in Figure 4, the first free end FE1 of the first flap 112 is movable upward and the second The second free end FE2 of flap 114 is movable downward. Conversely, when switching from the second mode shown in FIG. 4 back to the first mode shown in FIG. 3, the first free end FE1 of the first flap 112 can move downward, and the second flap ( The second free end FE2 of 114) is movable upward.

Additionally, when switching from the first mode shown in FIG. 3 to the second mode shown in FIG. 4 or when switching from the second mode shown in FIG. 4 back to the first mode shown in FIG. 3, the first mode The first free end FE1 of the flap 112 is operated to have a first displacement Uz_a in the first direction, and the second free end FE2 of the second flap 114 is operated to have a second displacement in the second direction. It can be operated to have (Uz_b). When switching from the first mode to the second mode, the sum of the first displacement (Uz_a) and the second displacement (Uz_b) may be greater than the thickness of the film structure 110.

In one embodiment, the first displacement (Uz_a) and the second displacement (Uz_b) may have substantially the same distance but opposite directions. The first displacement Uz_a of the first free end FE1 of the first flap 112 and the second displacement Uz_b of the second free end FE2 of the second flap 114 will be (temporarily) symmetrical. You can. The movements of the first free end FE1 and the second free end FE2 are substantially equal in length over a certain period of time but in opposite directions. That is, when the first flap 112 and the second flap 114 are maintained in the first position to be in the first mode (as shown in FIG. 3), the film structure 110 is operated to change to the second mode. Alternatively, in a transition between a first mode and a second mode (e.g., a transition from a first mode to a second mode), the distance of movement of the first flap 112 relative to the first position is It may be equal to the movement distance of the second flap 114 (as shown in FIG. 4).

When the movement of the first free end FE1 and the second free end FE2 is temporarily symmetrical with respect to one slit 130, the first flap 112 is operated to move in the first direction, so that the first flap 112 moves in the first direction. An air movement is generated, the direction of the first air movement being related to the first direction, and the second flap (114) is actuated to move in a second direction opposite to the first direction, so that a second air movement is generated, The direction of the second air movement is related to the second direction. Since the first air movement and the second air movement may each be related in opposite directions, when the first flap 112 and the second flap 114 are operated simultaneously to open/close the vent 130T, the first air movement At least a portion of the air motion and at least a portion of the second air motion may cancel each other out.

In some embodiments, when the first flap 112 and the second flap 114 are operated simultaneously to open and close the vent 130T, the first air movement and the second air movement may substantially cancel each other (e.g. For example, the first displacement (Uz_a) in the first direction and the second displacement (Uz_b) in the second direction may have the same distance but opposite directions. That is, the net air movement generated due to the opening and closing of the vent 130T, including the first air movement and the second air movement, is substantially zero. As a result, operation of vent 130T does not produce an acoustic disturbance perceptible to the user of venting device 100 because net air movement is substantially zero during the opening and/or closing operation of vent 130T. and the opening and/or closing operation of vent 130T is said to be “hidden.”

Optionally, as shown in FIG. 5 , the venting device 100 may further include a third mode, where the film structure 110 is bent downward and below the first and flat positions. 5 , in the third mode the first free end FE1 of the first flap 112 and the second free end FE2 of the second flap 114 can be moved/bent towards the base BS ( That is, the film structure 110 sags downward).

In the third mode shown in FIG. 5, the vent 130T is substantially closed, but the width of the space existing between the two opposing side walls of the slit 130 in the third mode is the same as in the first mode (see FIG. 3). (as shown) is larger than the width of the gap 130P that exists between the two opposing side walls of the slit 130. Accordingly, as shown in FIGS. 3 to 5, the air flow passing through the space existing between the two opposing side walls of the slit 130 in the third mode is the air flow passing through the vent 130T in the second mode. Although it may be much smaller than that, the air flow passing through the space existing between the two opposing side walls of the slit 130 in the third mode may be larger than the air flow passing through the gap 130P in the first mode.

Moreover, as shown in FIGS. 3 to 5, in the first mode, second mode, third mode and transition between the two modes, when the first free end FE1 performs the first up and down movement, 1 The first free end FE1 of the flap 112 is not in physical contact with any other component within the venting device 100, and when the second free end FE2 performs the second up and down movement, The second free end FE2 of the second flap 114 is not in physical contact with any other component within the venting device 100 .

FIG. 6 shows the frequency response of the venting device 100 with the film structure 110 at different positions, with FIG. 6 showing the first mode (as shown in FIG. 3), the second mode (as shown in FIG. 4), and FIG. The frequency response of the venting device 100 in the third mode (as shown in FIG. 5) and the third mode (as shown in FIG. 5) are shown, respectively. As shown in FIG. 6, since the vent 130T is closed in the first and third modes, the low frequency roll-off (LFRO) corner frequency is low in the first and third modes. , the SPL drop of low frequencies in the first mode and the SPL drop of low frequencies in the third mode are not clear. As shown in Figure 6, since the vent 130T is open in the second mode, the LFRO corner frequency in the second mode is significantly higher than the LFRO corner frequency in the first and third modes, and the low vibration in the second mode The SPL drop in numbers is clear. For example, as shown in Figure 6, the width of gap 130P must be sufficiently small in the first mode (as shown in Figure 3), so that the LFRO corner frequency of the SPL in the first mode can be less than 35 Hz. and may be lower than the LFRO corner frequency of the SPL in the third mode, but is not limited thereto. For example, as shown in Figure 6, when vent 130T is opened/formed in the second mode (as shown in Figure 4), the LFRO corner frequency in the second mode is that of vent 130T. Depending on the opening size, it may be between 80 and 400 Hz, but is not limited to this.

The actuator 120 may receive at least one suitable drive signal to actuate the film structure 110 to cause the film structure 110 to maintain or change its position, thereby causing the mode of the venting device 100 to be maintained or changed. You can. As shown in FIGS. 3 to 5 , the venting device 100 may be switched to a first mode, a second mode, or a third mode based on the driving signal(s) received by the actuator 120. When the film structure 110 is divided into a plurality of flaps (eg, see FIGS. 3-5), the actuating portion of the actuator 120 may receive the same drive signal or a different drive signal. For example, if the actuator 120 is a piezoelectric actuator, the drive signal(s) may be the drive voltage(s) and/or the drive voltage difference(s) between the two electrodes, and the displacement of the film structure 110 ( The displacement of the free end (FE) and the drive signal may have a linear relationship.

As shown in FIG. 3, in the first mode, the first operating portion 122 disposed on the first flap 112 receives the drive signal DV1_1, and the second operating portion 122 disposed on the second flap 114 The operating part 124 receives the driving signal DV2_1. The first flap 112 and the second flap 114 are moved to the first position or maintained in the first position according to the drive signal DV1_1 and DV2_1 to close the vent 130T. The driving signal (DV1_1) and driving signal (DV2_1) can be designed according to requirement(s). In some embodiments, the driving signal DV1_1 may be a constant voltage with a first threshold, the driving signal DV2_1 may be a constant voltage with a second threshold, and the driving signal DV1_1 and the driving signal DV2_1 may be the same or substantially the same (i.e., the first threshold is the same or substantially the same as the second threshold), but is not limited thereto. For example, the driving signal DV1_1 and DV2_1 may be 15V, but are not limited thereto. For example, the power consumed by the venting device 100 in the first mode may be 0.16 mW, but is not limited thereto.

As shown in FIG. 4, in the second mode, the first actuating portion 122 disposed on the first flap 112 receives the drive signal DV1_2, and the second operating portion 122 disposed on the second flap 114 The operating part 124 receives the driving signal DV2_2. According to the driving signal DV1_2 and the driving signal DV2_2, one of the first free end FE1 and the second free end FE2 (e.g., the first free end FE1 in FIG. 4) is the first free end FE1. The other one of the first free end FE1 and the second free end FE2 (e.g., second free end FE2 in FIG. 4) is moved up from the first and flat position. Move down to form a vent (130T). The driving signal (DV1_2) and driving signal (DV2_2) can be designed according to the requirement(s). In some embodiments, the driving signal DV1_2 may be a constant voltage higher (or lower) than the first threshold, the driving signal DV2_2 may be a constant voltage lower (or higher) than the second threshold, and the driving signal ( DV1_2) and driving signal (DV2_2) may be different. For example, the driving signal DV1_2 may be 30V, and the driving signal DV2_2 may be 0V, but are not limited thereto. For example, the power consumed by the venting device 100 in the second mode may be 0.2 mW, but is not limited thereto.

In the present invention, the size of the vent 130T may be determined by the distance between the first free end FE1 of the first flap 112 and the second free end FE2 of the second flap 114, so that the vent 130T The size of (130T) can be changed and controlled by drive signal(s) based on requirement(s).

Additionally, due to the design of the drive signal DV1_2 and DV2_2, the movement of the first free end FE1 and the second free end FE2 is temporally symmetrical with respect to the first position and the flat position. . For example, the difference between the driving signal DV1_2 and the first threshold may be the same as the difference between the driving signal DV2_2 and the second threshold, but is not limited to this.

As shown in FIG. 5, in the third mode, the first operating portion 122 disposed on the first flap 112 receives the drive signal DV1_3, and the second operating portion 122 disposed on the second flap 114 The operating part 124 receives the driving signal DV2_3. According to the drive signal DV1_3 and the drive signal DV2_3, the first free end FE1 and the second free end FE2 are moved downward from the first position and the flat position (i.e., the film structure 110 is moved downward). sagging) Close the vent (130T). The driving signal (DV1_3) and driving signal (DV2_3) can be designed according to requirement(s). In some embodiments, the driving signal DV1_3 may be a constant voltage lower than the first threshold, and the driving signal DV2_3 may be a constant voltage lower than the second threshold, and the driving signal DV1_3 and the driving signal DV2_3 may be the same or substantially the same, but is not limited thereto. For example, the driving signal DV1_3 and DV2_3 may be 0V or ground voltage, but are not limited thereto. In some embodiments, the first operative portion 122 and the second operative portion 124 may be floating, but are not limited to this. For example, the power consumed by the venting device 100 in the third mode may be 0.3 μW, but is not limited thereto.

Depending on the drive signals in these modes, the venting device 100 has the lowest power consumption in the third mode. In some embodiments, no voltage is applied to the actuator 120 in the third mode (i.e., the drive signal applied to the actuator 120 is 0V or a ground voltage or the actuator 120 is floating). Accordingly, to reduce the power consumption of venting device 100, venting device 100 may normally be in the third mode (i.e., vent 130T is closed), and venting device 100 may be in third mode when necessary. It may be changed to mode 1 or mode 2 (for example, the venting device 100 may be changed to the first mode for high-performance acoustic conversion, and the venting device 100 may be changed to the first mode to suppress the occlusion effect). 2 mode), but is not limited thereto.

In some embodiments, the driving signal applied to the first operating portion 122 and the driving signal applied to the second operating portion 124 may be unipolar with respect to the ground voltage. For example, according to the above-mentioned driving signals (DV1_1, DV1_2, DV1_3, DV2_1, DV2_2, DV2_3), the driving signal applied to the first operating part 122 and the driving signal applied to the second operating part 124 may be from 0V to 30V, but is not limited thereto.

In the present invention, the driving signal applied to the actuator 120 does not exceed the breakdown voltage of the actuator 120, so that the operation of the venting device 100 is stable or the venting device 100 is less distorted, but the present invention is not limited thereto. . For example, if the driving signal applied to the actuator 120 is greater than 0V, the driving signal may be less than the maximum voltage output from the controller (eg, driving circuit), but is not limited to this.

According to the foregoing, the slit 130 of the present invention can be actuated to serve as a dynamic front vent of the venting device 100, and when the dynamic front vent is opened/formed, the first volume within the housing structure (HSS) ( VL1) and the second volume (VL2) are connected, and when the dynamic front vent is closed, the first volume (VL1) and the second volume (VL2) in the housing structure (HSS) are separated from each other.

Moreover, the venting device 100 of the present invention can have better water resistance and better dust protection due to the dynamic front vent.

Referring to Figure 7. Figure 7 is a schematic diagram showing a wearable sound device with a venting device according to an embodiment of the present invention. As shown in Figure 7, the wearable sound device (WSD) includes a sensing device 150, an acoustic transducer, and a venting device 100 (e.g., an actuator 120 of the venting device 100). )) may further include a controller 160 electrically connected to the. In Figure 7, the components (SED) include an acoustic transducer and a venting device 100, making Figure 7 simple and clear.

The sensing device 150 may be external to the wearable sound device (WSD) and configured to sense a corresponding required factor to generate a sensing result. For example, sensing device 150 may detect any desired factor using an infrared (IR) sensing method, an optical sensing method, an acoustic sensing method, an ultrasonic sensing method, a capacitive sensing method, or other suitable sensing method. However, it is not limited to this.

In some embodiments, whether or not the vent 130T is formed is determined based on detection results. Vent 130T is opened (formed) when the detected quantity indicated by the detection result crosses a certain threshold with the first polarity, and when the sensed quantity with the second polarity opposite to the first polarity crosses the certain threshold. The vent (130T) is closed. For example, the first polarity could be low to high and the second polarity could be high to low, so that a vent occurs when the sensed quantity changes from below a certain threshold to above a certain threshold. Vent 130T is opened, and vent 130T is closed when the sensed quantity changes from above, but not limited to, a certain threshold to below a certain threshold.

Moreover, in some embodiments, the opening of vent 130T may be monotonically related to the sensed quantity indicated by the sensing result. That is, the opening of the vent 130T increases or decreases depending on the increase or decrease in the sensed amount.

In some embodiments, sensing device 150 may optionally include a motion sensor configured to detect body movement of a user and/or movement of a wearable sound device (WSD). For example, the sensing device 150 may detect body movements that cause an occlusion effect, such as walking, jogging, talking, eating, etc. In some embodiments, the sensed quantity displayed as a result of the sensing is indicative of the user's body movement and/or the movement of the wearable sound device (WSD), and the opening of the vent 130T is correlated with the sensed movement. For example, the opening of vent 130T increases as movement increases.

In some embodiments, sensing device 150 may optionally include a proximity sensor, which is configured to sense a distance between an object and the proximity sensor. In some embodiments, the sensed amount displayed as a sensing result represents the distance between the object and the proximity sensor, and the opening of vent 130T is correlated to the sensed distance. For example, if this distance is less than a predetermined distance, the vent 130T is opened (or formed), and as this distance decreases, the openness of the vent 130T increases. For example, if a user wishes to open (or form) vent 130T, the user may use any suitable object (e.g., a hand) to approach the wearable sound device (WSD) and Accordingly, the proximity sensor detects this object and generates a detection result correspondingly to open/form the vent 130T.

Additionally, the proximity sensor may further have the ability to detect when the user (predictably) taps or touches the wearable sound device (WSD) with venting device 100, as such movements may also cause an occlusion effect. Because there is.

In some embodiments, sensing device 150 may optionally include a force sensor configured to sense a force applied to a force sensor of a wearable sound device (WSD), wherein the sensed quantity indicated as a result of the sensing is a force sensor of the wearable sound device (WSD). WSD), and the opening of the vent 130T is correlated with the sensed force.

In some embodiments, sensing device 150 may optionally include an optical sensor configured to detect ambient light of a wearable sound device (WSD), wherein the sensed quantity displayed as a result of the detection is the ambient light detected by the optical sensor. It represents the luminance of light, and the opening degree of the vent 130T is correlated with the luminance of the sensed ambient light.

In some embodiments, sensing device 150 may optionally include an acoustic sensor, such as a microphone, configured to detect sound external to the wearable sound device (WSD) to detect occlusion events. For example, the sensed quantity displayed as a detection result represents the SPL of the sound detected by the acoustic sensor, and the opening degree of the vent 130T is correlated with the sound detected by the acoustic sensor, but is not limited to this. . For example, but not limited to, venting device 100 is operative to open vent 130T when an acoustic sensor detects that an occlusion event has occurred.

The controller 160 is configured to generate a driving signal applied to the acoustic transducer and the venting device 100 to control the acoustic transducer to perform acoustic conversion and control the mode of the venting device 100.

Controller 160 may be designed based on the requirement(s), and controller 160 may include any suitable components. For example, in Figure 7, controller 160 includes an analog-to-digital converter (ADC) 162, a digital signal processing (DSP) unit 164, and a digital-to-analog converter (DAC) ( 166), and may include any other suitable components or combinations thereof. For example, controller 160 may be, but is not limited to, an integrated circuit.

The controller 160 controls the mode of the venting device 100 by generating a drive signal applied to the actuator 120 of the venting device 100. Accordingly, the controller 160 controls the venting device 100 to form the vent 130T to suppress the occlusion effect or to form the vent 130T so that the wearable sound device user can experience high-performance acoustic conversion over the entire audio frequency range. 130T) is closed.

3 and 5, when controller 160 determines to close vent 130T, venting device 100 is controlled by controller 160 to close/seal vent 130T. (Venting device 100 is in the first mode or the third mode). Accordingly, in FIG. 3, the driving signal DV1_1 and the driving signal DV2_1 are applied to the first operating part 122 and the second operating part 124, respectively, to operate the first flap 112 and the second flap 114. is moved to the first position, or remains in the first position to close/seal the vent 130T. In Figure 5, the driving signal (DV1_3) and the driving signal (DV2_3) are applied to the first operating portion 122 and the second operating portion 124, respectively, to operate the first flap 112 and the second flap 114. Close vent 130T by moving it to a position below (or holding it in) the 1 position and the flat position.

In particular, in the third mode shown in FIG. 5, the driving signal DV1_3 and the driving signal DV2_3 may be 0V or ground voltage, and the first operating portion 122 and the second operating portion 124 may be floating. You can. Accordingly, in some embodiments, if controller 160 decides to close vent 130T and also places venting device 100 in the third mode, no voltage is applied to actuator 120 ( That is, no voltage is applied to the first operating part 122 and the second operating part 124), and the vent 130T is closed.

As shown in FIG. 4 , the venting device 100 may operate unless the controller 160 decides to close the vent 130T (e.g., if the controller 160 decides to form the vent 130T) lower surface) is controlled by controller 160 to form vent 130T (venting device 100 is in second mode). Therefore, in FIG. 3, the driving signal DV1_2 and the driving signal DV2_2 are applied to the first operating portion 122 and the second operating portion 124, respectively, to operate the first flap 112 and the second flap 114. is controlled to form a vent (130T). For example, the first flap 112 (e.g., first free end FE1) is actuated to move in a first direction to reach a position above the first position, and the second flap 114 (e.g., The second free end FE2) is operable to move in a second direction opposite to the first direction to reach a position below the first position.

In some embodiments, the driving signal applied to the actuator 120 of the venting device 100 may be generated according to a detection result, but is not limited to this. In some embodiments, the opening of vent 130T may be monotonically related to the sensed quantity indicated by the sensing result, so that the drive signal applied to actuator 120 may have a monotonic relationship with the sensed quantity indicated by the sensing result. You can.

When the sensing device 150 includes a motion sensor, the size of the driving signal applied to the actuator 120 may increase (or decrease) as the movement increases, but is not limited to this. Similarly, if sensing device 150 includes a proximity sensor, the magnitude of the drive signal applied to actuator 120 may increase (or decrease) as the distance decreases or decreases below a threshold, but is limited thereto. It doesn't work. Similarly, when the sensing device 150 includes a force sensor, the magnitude of the driving signal applied to the actuator 120 may increase (or decrease) as the force increases, but is not limited to this. Similarly, when the sensing device 150 includes an optical sensor, the size of the driving signal applied to the actuator 120 may increase (or decrease) as the luminance of ambient light decreases, but is not limited to this.

Referring to Figure 8. Figure 8 is a schematic diagram showing a wearable sound device with a venting device according to an embodiment of the present invention. The wearable sound device (WSD) shown in FIG. 8 may include a plurality of sound transducers (eg, sound transducers SPK1 and SPK2) configured to perform sound conversion. That is, sound waves are generated by the sound transducers (SPK1, SPK2), and the venting device 100 is configured to operate to open and close the vent 130T to suppress the occlusion effect. As shown in FIG. 8, sound waves generated by the sound transducers (SPK1, SPK2) may propagate from the front chamber (FBC) of the wearable sound device (WSD) to the external auditory canal of the user of the wearable sound device.

The frequency range of the sound waves produced by each acoustic transducer can be designed based on requirement(s). For example, one embodiment of an acoustic transducer may generate sound waves having a frequency range that covers the human hearing frequency range (eg, 20 Hz to 20 kHz), but is not limited to this. For example, another embodiment of an acoustic transducer may produce sound waves of a higher frequency than a specific frequency, so the acoustic transducer may be, but is not limited to, a high frequency sound unit (tweeter). For example, other embodiments of an acoustic transducer may produce sound waves of a lower frequency than a certain frequency, so such an acoustic transducer may be, but is not limited to, a low frequency sound unit (woofer). It should be noted that the specific frequency may be a value in the range of 800 Hz to 4 kHz (e.g., 1.44 kHz), but is not limited thereto. For further details of high frequency sound units and low frequency sound units, reference may be made to US Application No. 17/153,849 filed by the applicant, which is not described here for brevity.

The acoustic transducers (SPK1 and SPK2) may be the same or different. For example, the sound transducer SPK1 may be a high-frequency sound unit (tweeter), and the sound transducer SPK2 may be a low-frequency sound unit (woofer), but the present invention is not limited thereto.

The front chamber (FBC) of the wearable sound device (WSD) shown in Figure 8 may be connected to the first volume (VL1) (shown in Figure 1) within the housing structure (HSS) in which the venting device 100 is disposed. . For example, the front chamber (FBC) of the wearable sound device (WSD) may be connected directly to the first volume (VL1) within the housing structure (HSS), or via the external auditory canal of the wearable sound device user to the first volume (VL1) within the housing structure (HSS). It can be connected to the volume (VL1). Additionally, the rear chamber (BBC) of the wearable sound device (WSD) shown in FIG. 8 may be connected to a second volume (VL2) (shown in FIG. 1) within the housing structure (HSS) in which the venting device 100 is disposed. You can. For example, the rear chamber (BBC) of the wearable sound device (WSD) may be connected directly to the second volume (VL2) within the housing structure (HSS) or through the periphery of the wearable sound device (WSD) of the housing structure (HSS). It may be connected to the second volume (VL2).

Sensing device 150, which may include acoustic sensor(s) (e.g., microphone(s)), may be placed in the front chamber (FBC) and/or back chamber (BBC) of the wearable sound device (WSD). and the sensing device 150 is configured to detect an occlusion event.

The venting device 100, the acoustic transducers (SPK1, SPK2), and the sensing device 150 may be electrically connected to the controller 160. The controller 160 may apply an acoustic drive signal to the acoustic transducers SPK1 and SPK2, so that the sound waves generated by the acoustic transducers SPK1 and SPK2 may correspond to the acoustic drive signal. The controller 160 may apply a driving signal based on the detection result of the sensing device 150 to the venting device 100 to open or close the vent 130T to suppress the occlusion effect. For example, controller 160 may include, but is not limited to, device controller 168a and device driver 168b. For example, but not limited to, the device controller 168a may determine the voltage applied or to be applied to the actuating portion of the actuator 120 depending on the sensing results generated by the sensing device 150.

The venting device of the present invention is not limited to the above embodiment(s). Other embodiments of the invention are described below. For easy comparison, identical components will hereinafter be denoted by identical symbols. The following description relates to differences between each embodiment, and repeated parts will not be explained redundantly.

In the following embodiments, the venting device is designed so that the vent 130T is formed/opened under low power consumption conditions. It should be noted that the venting device is not limited to the examples below.

9 and 10, FIGS. 9 and 10 are schematic cross-sectional views showing the film structure of the venting device in another mode according to the second embodiment of the present invention, and the venting device 200 shown in FIG. ) is in the first mode, and the venting device 200 shown in FIG. 10 is in the second mode. 9 and 10, the venting device 200 further includes a fastening structure 210 disposed at the base BS and adjacent the film structure 110 (e.g., chamber CB ) is also between the fixed structure 210 and the base (BS)). 9 and 10, the fixation structure 210 may be disposed between the first flap 112 and the second flap 114 in a horizontal direction (eg, X direction). 9 and 10, the stationary structure 210 may not move during operation of the venting device 200, so the stationary structure 210 may not be actuated to move.

Anchoring structure 210 may be designed based on requirement(s). For example, as shown in FIGS. 9 and 10, the fixation structure 210 may be parallel to the base BS (e.g., the top surface SH of the base BS), but is not limited thereto. . 9 and 10, the slit 130 is between the first flap 112 and the second flap 114, between the first flap 112 and the fastening structure 210, and/or the second flap. It may be formed between 114 and the fixed structure 210.

In some embodiments, in a top view, the anchoring structure 210 is positioned along the entire first free end FE1 (i.e., first free edge) of first flap 112 and the second flap in a horizontal direction (e.g., in the It may correspond to the entire second free end FE2 (i.e., second free edge) of 114 . One of the slits 130 is formed between the first flap 112 and the fastening structure 210 (i.e., the two opposing side walls of the slit 130 are formed between the first flap 112 and the fastening structure 210, respectively). (belonging to belonging to fixed structures 210). Accordingly, in the horizontal direction (e.g. in the The distance between the first free end FE1 of the first flap 112 and the second flap 114 in the venting device 100 of the first embodiment (FIGS. 1 to 5) is is greater than the distance between the second free ends (FE2) of 9 , when the venting device 200 is in the first mode, one of the gaps 130P is between the first free end FE1 of the first flap 112 and the fastening structure 210. exists, and the other one of the gaps 130P exists between the second free end FE2 of the second flap 114 and the fastening structure 210 (i.e., the gap 130P is formed due to the slit 130). . 10 , when the venting device 200 is in the second mode, one of the vents 130T is between the first free end FE1 of the first flap 112 and the fastening structure 210. is formed, and the other of the vents 130T is formed between the second free end FE2 of the second flap 114 and the fastening structure 210 (i.e., the vent 130T is formed due to the slit 130). .

In some embodiments, in a top view, the fastening structure 210 corresponds to a corresponding portion of the first free end FE1 (i.e., the first free edge) in a horizontal direction (e.g., the X direction) and the first free end FE1 ) (i.e., the first free edge) may not correspond to a non-corresponding portion of the second free end FE2 (i.e., the second free edge) in the horizontal direction (e.g., the X direction). corresponds to a corresponding portion of and may not correspond to a non-corresponding portion of the second free end FE2 (i.e., the second free edge). The slit 130 is formed between the first flap 112 and the second flap 114, between the first flap 112 and the fixing structure 210, and between the second flap 114 and the fixing structure 210. (i.e., some sidewalls of the slit 130 belong to the anchoring structure 210). Therefore, in the horizontal direction (e.g. in the The distance between the corresponding parts of the second free end FE2 of the flap 114 is equal to the first free end FE1 of the first flap 112 in the venting device 100 of the first embodiment ( FIGS. 1 to 5 ). and the second free end FE2 of the second flap 114. In this case, in the horizontal direction (e.g. in the The distance is greater than the distance between the non-corresponding portion of the first free end FE1 of the first flap 112 and the non-corresponding portion of the second free end FE2 of the second flap 114 . In this case, when the venting device 200 is in the first mode, the gap 130P is formed between the corresponding part of the first free end FE1 and the fixed structure 210 and the corresponding part of the second free end FE2. may exist between the fastening structures 210 and between the non-corresponding portions of the first free end FE1 and the non-corresponding portions of the second free end FE2 (i.e., the gap 130P is formed due to the slit 130). . In this case, when the venting device 200 is in the second mode, the vent 130T is positioned between a corresponding portion of the first free end FE1 and the fixed structure 210 and a corresponding portion of the second free end FE2. may exist between the fastening structures 210 and between non-corresponding portions of the first free end FE1 and non-corresponding portions of the second free end FE2 (i.e., the vent 130T is formed due to the slit 130). .

As shown in FIG. 9 , when the controller 160 determines to close the vent 130T, the venting device 200 is controlled by the controller 160 to close/seal the vent 130T (i.e., venting Device 200 is in first mode). Therefore, in FIG. 9, the driving signal DV1_1 and the driving signal DV2_1 are applied to the first operating part 122 and the second operating part 124, respectively, so that the first flap 112 and the second flap 114 ) is moved to the first position or maintained in the first position to close/seal the vent 130T. For example, the driving signal DV1_1 and DV2_1 may be 15V, but are not limited thereto. For example, the power consumed by the venting device 200 in the first mode may be 0.16 mW, but is not limited thereto.

As shown in FIG. 10 , if controller 160 does not decide to close vent 130T (e.g., if controller 160 decides to form vent 130T), then venting device 200 closes vent ( 130T) (i.e., the venting device 200 is in the second mode). Accordingly, in FIG. 10, the driving signal DV1_2 and the driving signal DV2_2 are applied to the first operating portion 122 and the second operating portion 124, respectively, to operate the first flap 112 and the second flap 114. is controlled to form a vent (130T).

As shown in FIG. 10 , if controller 160 does not decide to close vent 130T (e.g., if controller 160 decides to form vent 130T), venting device 200 ) is in the second mode, and the first flap 112 and the second flap 114 (i.e., the film structure 110) are bent downward and sagging and below the flat position, so that the vent 130T is formed. In some embodiments, in the second mode, the driving signal DV1_2 and DV2_2 may be 0V or ground voltage, but are not limited thereto. In some embodiments, in the second mode, first actuated portion 122 and second actuated portion 124 (i.e., actuator 120) may be floating, but is not limited to this. In some embodiments, no voltage may be applied to the first actuating portion 122 and the second actuating portion 124 (i.e., the actuator 120), but the present invention is not limited thereto. For example, the power consumed by the venting device 200 in the second mode may be 0.3 μW, but is not limited thereto.

In the second mode, the fastening structure 210 is present between the first flap 112 and the second flap 114, so that the first free end FE1 of the first flap 112 and the second flap 114 The distance between the second free ends FE2 of is enlarged to form a vent 130T when the first flap 112 and the second flap 114 droop downward and are below a flat position.

Depending on the drive signals in these modes, the venting device 200 has the lowest power consumption in the second mode. In some embodiments, no voltage is applied to the actuator 120 in the second mode (i.e., the drive signal applied to the actuator 120 is 0V or a ground voltage or the actuator 120 is floating). Therefore, in order to reduce the power consumption of the venting device 200, the venting device 200 is normally in the second mode (i.e., the vent 130T is formed), and the venting device 200 is in the first mode when necessary. This may change (for example, the venting device 200 may change to a first mode for high-performance acoustic conversion), but is not limited thereto.

Referring to Figures 11 and 12. FIG. 11 is a schematic plan view showing a portion of the film structure of the venting device according to the third embodiment of the present invention, and FIG. 12 is a schematic cross-sectional view showing the film structure of the venting device according to the third embodiment of the present invention. , and the venting device 300 shown in FIG. 12 is in the second mode. 11 and 12, with the film structure 110 bent and sagging downward to form the vent(s) 130T and below in a flat position (i.e., the venting device 300 is is in the second mode), the film structure 110 is configured such that the controller 160 determines to form the vent 130T (i.e., the controller 160 decides to place the venting device 300 in the second mode). If determined), a clamp structure 310 configured to suppress deformation of the film structure 110 may be further included. For example, in Figure 12, with the first flap 112 and the second flap 114 bent downward and sagging down in a flat position, the first flap 112 along the Z direction (e.g., 1 If the movement distance of the free end FE1) and the movement distance of the second flap 114 (e.g., the second free end FE2) along the Z direction are greater than the distance threshold, the clamp structure 310 (112) and the second flap 114 can be locked.

In this embodiment, the clamp structure 310 and the fixing structure 210 may be included in the venting device 300, and the clamp structure 310 and the fixing structure 210 are each positioned in the horizontal direction (e.g., X direction). 1 on different parts of the free end FE1 (e.g., the corresponding and non-corresponding parts described above) and on different parts of the second free end FE2 (e.g., the corresponding and non-corresponding parts described above), respectively. We can respond. Accordingly, if the cross-sectional line of the cross-sectional view extends along the X direction, the clamp structure 310 and the fixing structure 210 will be shown in different cross-sectional views. For example, Figure 10 shows a first portion of the venting device 300 in a second mode and Figure 12 shows a second portion of the venting device 300 in the second mode, with the first portion shown in Figure 10 The first part includes a fastening structure 210, a first flap 112 and a second flap 114, and the second part, shown in FIG. 12, includes a clamp structure 310, a first flap 112 and a second flap. Includes flap 114.

Clamp structure 310 may have any suitable design based on the requirement(s). As shown in FIG. 11 , clamp structure 310 may be formed due to slit(s) 130 . For example, in FIG. 11, the slits 130 include a first slit segment 130a, a second slit segment 130b, a third slit segment 130c, a fourth slit segment 130d, and a fifth slit that are sequentially connected to each other. It may include a segment 130e, and the first slit segment 130a, the third slit segment 130c, and the fifth slit segment 130e may be parallel to one horizontal direction (eg, Y direction), and The second slit segment 130b and the fourth slit segment 130d may be parallel to another horizontal direction (eg, X direction).

11 , clamp structure 310 may include a first clamp element 312 and a second clamp element 314, where first clamp element 312 may be part of first flap 112; (Equivalently, the first clamp element 312 may belong to the first flap 112), and the second clamp element 314 may be part of the second flap 114 (Equivalently, the second clamp Element 314 may belong to second flap 114). 11 , the first clamp element 312 may be disposed between the second clamp element 314 of the second flap 114 and the other part of the second flap 114, and the second clamp element 314 may be disposed between the first clamp element 312 of the first flap 112 and another part of the first flap 112 . For example, in FIG. 11 , the longitudinal direction of the first clamp element 312 and the longitudinal direction of the second clamp element 314 may be substantially parallel to the Y direction, but are not limited thereto. For example, the clamp structure 310 may be a latch structure, but is not limited thereto.

11 and 12, a first flap 112 (e.g., first free end FE1) and a second flap 114 (e.g., second free end FE2) When moving along the Z direction with a displacement greater than this distance threshold, the first clamp element 312 and the second clamp element 314 suppress deformation of the first flap 112 and the second flap 114. To do this, the two flaps are buckled together to lock them. It should be noted that the width of the slit 130 and the size of the clamp element are related to the buckling effect of the clamp structure 310.

In this embodiment, even though the film structure 110 is constrained by the clamp structure 310, the vent 130T is still formed when the venting device 300 is in the second mode (e.g., in FIG. 10 As shown, a vent 130T is formed between the flap and the securing structure 210). It should be noted that the design of the clamp structure 310 is related to the size of the vent 130T.

Due to the presence of clamp structure 310, the opening sizes of vents 130T of different venting devices 300 may be substantially the same.

Referring to FIG. 13, FIG. 13 is a schematic cross-sectional view showing a film structure of a venting device according to a fourth embodiment of the present invention, and the venting device 400 shown in FIG. 13 is in the first mode. Compared with the venting device 200 shown in FIGS. 9 and 10, the venting device 400 shown in FIG. ) further comprises a clamp 470 configured to hold the film structure 110 in the first position if it is determined to place the venting device 400 in the first mode. Accordingly, the clamp 470 can prevent the free end FE (flap) of the film structure 110 from moving downward or upward.

Clamp 470 may have any suitable design based on the requirement(s), and clamp 470 may be actuated into motion by any suitable method. In some embodiments, operation of clamp 470 may be controlled by electrical signal(s). For example, movement of clamp 470 may occur by thermal actuation, electrostatic actuation, magnetic actuation, piezoelectric actuation, or other suitable actuation. In some embodiments, the clamp 470 will receive an electrical signal to cause the clamp 470 to move, and the clamp 470 will not receive an electrical signal to stop the movement of the clamp 470, but this is not limited thereto. It doesn't work.

As shown in FIG. 13 , clamp 470 may be disposed laterally by film structure 110 when viewed in plan view, and clamp 470 may hold film structure 110 or secure film structure 110. It can be actuated to move to release. For example, in FIG. 13 , the clamp 470 may be placed on the fixed structure 210 and the clamp 470 may move horizontally when the clamp 470 is operated, but the present invention is not limited thereto. For example, in Figure 13, clamp 470 can be moved in a horizontal direction (e.g., in the 470 may, but is not limited to, move in a horizontal direction (e.g., opposite to the X direction) away from the free end FE of film structure 110 to release film structure 110. 13, when clamp 470 holds film structure 110, the clamp 470 prevents film structure 110 from moving downward.

Upon switching from the first mode to the second mode, the film structure ( The free end FE of 110 (e.g., the first free end FE1 of first flap 112 and the second free end FE2 of second flap 114) is moved upward to a first position. The clamp 470 can then be moved away from the free end FE of the film structure 110 and finally the actuator 120 (e.g., the first actuated portion ( 122) and the second operating portion 124) by applying a second mode driving signal (e.g., a driving signal DV1_2 and a driving signal DV2_2) to the free end FE of the film structure 110 ( For example, the first free end FE1 of the first flap 112 and the second free end FE2 of the second flap 114 may droop downward and be below the first and flat positions. .

Conversely, when switching from the second mode back to the first mode, by applying a mode change drive signal to the actuator 120 (e.g., the first actuating portion 122 and the second actuating portion 124), The free end FE of the film structure 110 (e.g., the first free end FE1 of the first flap 112 and the second free end FE2 of the second flap 114) moves upwardly. may be in a first position, and then the clamp 470 may be moved towards the free end FE of the film structure 110 and finally the actuator 120 (e.g., the first actuated portion By applying a first mode drive signal (e.g., drive signal DV1_1 and DV2_1) to (122) and second operating portion 124), the free end (FE) of film structure 110 (e.g., the first free end FE1 of the first flap 112 and the second free end FE2 of the second flap 114) can be moved downward to a first position, so that the clamp 470 ) may maintain the film structure 110 in the first position.

In some embodiments, because the clamp 470 holds the film structure 110 in the first position, the first mode drive signal (e.g., drive signal DV1_1 and DV2_1) is held in the first position. It may be less than or equal to the corresponding drive signal. For example, the first mode drive signal (e.g., drive signal DV1_1 and DV2_1 may be 0V or ground voltage, or the actuator in the first mode 120 is floating, thus reducing the power consumption of the venting device 400 in the first mode (e.g., the power consumed by the venting device 400 in the first mode may be 0.3 μW) ), but is not limited thereto. That is, after the clamp 470 holds the film structure 110 in the first position, no voltage is applied to the actuator 120 and the vent 130T is closed (venting device 400 ) is in the first mode).

In this case, the first mode driving signal (e.g., driving signal DV1_1 and DV2_1) and the second mode driving signal (e.g., driving signal DV1_2 and DV2_2) are 0V or ground. Either voltage or actuator 120 floats in the first and second modes, reducing power consumption of venting device 400.

Moreover, in some embodiments, after clamp 470 holds film structure 110 in the first position, clamp 470 is not energized and vent 130T is closed, causing the venting device 400 to close. Reduces power consumption. In some embodiments, no voltage is applied to the clamp 470 after the clamp 470 releases the film structure 110, thereby reducing power consumption of the venting device 400.

Referring to Figure 14. FIG. 14 is a schematic cross-sectional view showing the film structure of the venting device according to the fifth embodiment of the present invention, and the venting device 500 shown in FIG. 14 is in the first mode. Compared to the venting device 400 shown in FIG. 13, the design of the clamp 470 is different. 14 , when the clamp 470 holds the film structure 110, the clamp 470 prevents the film structure 110 from moving above the first position in the first mode (e.g., preventing this movement). controls the size of the gap 130P (which may be caused by residual stress).

Referring to FIGS. 15 to 17, FIGS. 15 to 17 are schematic cross-sectional views showing the film structure of the venting device according to the sixth embodiment of the present invention, and FIG. 15 shows the first mode of the venting device 600. 16 and 17 show the second mode of the venting device 600. Compared to the venting device 100 shown in FIGS. 1 to 5, the film structure 110 of the venting device 600 shown in FIGS. 15 to 17 has only one flap (i.e., the first flap 112). ), and the slit 130 is a boundary of the film structure 110. That is, the two opposing side walls of the slit 130 belong to the first flap 112 and other components (e.g., the right anchor structure 140 shown in FIGS. 15-17), respectively, and thus the One side wall is fixed/movable during operation of the venting device 600.

As shown in Figure 15, in the first mode, the first actuating part 122 disposed on the first flap 112 receives the drive signal DV3_1. The first flap 112 moves to the first position or remains in the first position according to the drive signal DV3_1 to close the vent 130T. The driving signal (DV3_1) can be designed based on requirement(s). In some embodiments, the driving signal DV3_1 may be a constant voltage having a third threshold, but is not limited thereto.

As shown in Figure 16, in the second mode, the first actuating part 122 disposed on the first flap 112 receives the drive signal DV3_2. According to the drive signal DV3_2, the first free end FE1 moves down to the first position and the flat position to form the vent 130T. The driving signal (DV3_2) can be designed based on requirement(s). In some embodiments, the driving signal DV3_2 may be a constant voltage lower than the third threshold. For example, the Z-direction displacement of the first free end FE1 may be -18 ㎛ compared to the first position (or flat position) when the driving signal DV3_2 is 0V. For example, assuming the thickness of the film structure 110 is 5 μm, when the drive signal DV3_2 is 0V, the vent 130T is “opened” with an opening size of 13 μm (18 μm - 5 μm).

As shown in Figure 17, in another type of second mode, the first actuating part 122 disposed on the first flap 112 receives the drive signal DV3_3. According to the drive signal DV3_3, the first free end FE1 moves above the first position and the flat position to form the vent 130T. The driving signal (DV3_3) can be designed based on requirement(s). In some embodiments, the driving signal DV3_3 may be a constant voltage higher than the third threshold.

18 and 19, FIGS. 18 and 19 are schematic cross-sectional views showing the film structure of the venting device in another mode according to the seventh embodiment of the present invention, and FIG. 18 is a schematic cross-sectional view of the venting device 700. The first mode is shown, and FIG. 19 shows the second mode of the venting device 700. Compared to the venting device 600 shown in FIGS. 15 to 17, the venting device 700 shown in FIGS. 18 to 19 has one side (e.g., X direction) of the film structure 110 in the horizontal direction (e.g., That is, it further includes a fixing structure 210 disposed on the first flap 112 and adjacent to the film structure 110. 18 and 19, the stationary structure 210 may not move during operation of the venting device 700, so the stationary structure 210 may not be actuated to move.

Anchoring structure 210 may be designed based on requirement(s). For example, as shown in FIGS. 18 and 19, the fixation structure 210 may be parallel to the base BS (e.g., the top surface SH of the base BS), but is not limited thereto. . As shown in FIGS. 18 and 19 , a slit 130 may be formed between the first flap 112 and the securing structure 210 .

In some embodiments, in a top view, the anchoring structure 210 extends across the first free end FE1 of the first flap 112 (i.e., the first free edge) or the first free end FE1 of the first flap 112 in a horizontal direction (e.g., the X direction). It may correspond to a portion of the end portion FE1. 18 , when the venting device 700 is in the first mode, a gap 130P exists between the first free end FE1 of the first flap 112 and the fastening structure 210. (That is, the gap 130P is formed because of the slit 130). 19 , when the venting device 700 is in the second mode, a vent 130T is formed between the first free end FE1 of the first flap 112 and the fastening structure 210 ( That is, the vent 130T is formed because of the slit 130).

In the second mode (as shown in Figure 19), the distance between the first free end FE1 of the first flap 112 and the left anchor structure 140 increases due to the presence of the anchoring structure 210. It is done. Accordingly, the effect of the vent 130T can be improved, and the effect of suppressing the occlusion effect can be increased.

Referring to FIG. 20, FIG. 20 is a schematic plan view showing a venting device according to an eighth embodiment of the present invention, and FIG. 20 shows the first mode of the venting device 800. Compared to the venting device 700 shown in FIGS. 18 and 19, the venting device 800 shown in FIG. 20 has a further comprising a clamp 470 configured to hold the film structure 110 in the first position (if the device decides to place the venting device 800 in the first mode). Accordingly, as shown in FIG. 20, clamp 470 prevents the free end FE of film structure 110 (first free end FE1 of first flap 112) from moving downward or upward. It can be prevented. The detailed design of the clamp 470 can be referred to above, and repeated parts will not be described redundantly.

As shown in FIG. 20 , when viewed in plan view, the clamp 470 may be disposed laterally by the film structure 110, and the clamp 470 may hold the film structure 110 or hold the film structure 110. It can be operated to move to release. For example, in FIG. 20 , clamp 470 may be disposed at base BS adjacent lateral edge 110S of first flap 112 (i.e., lateral edge of film structure 110), and (110S) may be connected directly to the first free end FE1 (ie, the first free edge), but is not limited to this. For example, in Figure 20, when the clamp 470 is operated, the clamp 470 may move horizontally, but the present invention is not limited to this. For example, in Figure 20, the clamp 470 may move in a horizontal direction (e.g., Y direction) toward the side edge 110S of the first flap 112 to maintain the first flap 112, In addition, the clamp 470 may be moved in the horizontal direction (for example, in the opposite direction of the Y direction) away from the side edge 110S of the first flap 112 to release the first flap 112, but is limited to this. It doesn't work. 20, the venting device 800 includes two clamps 470 that grip the first flap 112 at two opposing side edges 110S to prevent the first flap 112 from moving downward or upward. ) can have.

Upon transition from the first mode to the second mode, the clamp 470 moves away from the side edge 110S of the film structure 110 (i.e., the first flap 112) to release the film structure 110. (in FIG. 20 , venting device 800 changes from state TU1 to state TU2) and then causes actuator 120 (e.g., first actuated portion 122) to enter the second mode. By applying a drive signal (e.g., a drive signal DV3_2), the free end (FE) of the film structure 110 (e.g., the first free end (FE1) of the first flap 112) moves downward. , so that it is below the first position and the flat position.

Conversely, when switching from the second mode back to the first mode, a mode change drive signal is applied to the actuator 120 (e.g., the first actuating portion 122), so that the free end (FE) of the film structure 110 ) (e.g., the first free end FE1 of the first flap 112 and the second free end FE2 of the second flap 114) are moved upward to a first position, and then: Clamp 470 moves toward side edge 110S of film structure 110 to hold film structure 110 in the first position (in FIG. 20, venting device 800 moves from state TU2 to state TU1). changes to).

In some embodiments, the clamp 470 maintains the film structure 110 in the first position so that the first mode drive signal (e.g., drive signal DV3_1) is smaller than the drive signal corresponding to the first position. For example, the first mode driving signal (e.g., driving signal DV3_1) may be 0V or ground voltage, or the actuator 120 may be floating in the first mode, so that in the first mode, the actuator 120 may be floating. The power consumption of the venting device 800 may be reduced (e.g., the power consumed by the venting device 800 in the first mode may be 0.3 μW), but is not limited thereto. That is, the clamp 470 ) maintains the film structure 110 in the first position, the actuator 120 is deenergized and the vent 130T is closed (the venting device 800 is in the first mode).

In this case, the first mode driving signal (e.g., driving signal DV3_1) and the second mode driving signal (e.g., driving signal DV3_2) are 0V or ground voltage, or the actuator 120 operates in the first mode and the second mode. By being floating, it reduces the power consumption of the venting device 800.

Moreover, in some embodiments, after clamp 470 holds film structure 110 in the first position, voltage is not applied to clamp 470 and vent 130T is closed, causing venting device 800 to open. reduces power consumption. In some embodiments, after clamp 470 releases film structure 110, no voltage is applied to clamp 470, reducing power consumption of venting device 800.

21 to 23, FIGS. 21 to 23 are schematic cross-sectional views showing the film structure 110 of the venting device in another mode according to the ninth embodiment of the present invention, and FIG. 21 is a venting device ( 900) and represents the second mode. Figure 23 shows the first mode of the venting device 900, and Figure 22 shows the transition between the first and second modes. Compared to the venting device 700 shown in FIGS. 18-19 , the venting device 900 shown in FIGS. 21-23 is configured to close the vent 130T when the controller 160 decides to close the vent 130T (i.e. and a clamp 470 configured to maintain the film structure 110 in the first position (if the controller 160 determines to place the venting device 900 in the first mode). Accordingly, as shown in FIG. 23, clamp 470 prevents the free end FE of film structure 110 (first free end FE1 of first flap 112) from moving downward or upward. It can be prevented. The detailed design of the clamp 470 can be referred to above, and repeated parts will not be described redundantly.

21 to 23, when viewed in plan view, the clamp 470 may be disposed laterally by the film structure 110, and the clamp 470 may hold the film structure 110 or support the film structure. It can be operated to move to release 110. For example, in FIGS. 21-23 , the clamp 470 is adjacent the free end FE of the film structure 110 (i.e., the first free end FE1 of the first flap 112) to secure the fastening structure 210. ) can be placed in. For example, in FIGS. 21 to 23, when the clamp 470 is operated, the clamp 470 may move horizontally, but the present invention is not limited thereto. For example, in Figure 20, clamp 470 can move in a horizontal direction (e.g., 470 may be moved in a horizontal direction (e.g., opposite to the X direction) away from the free end FE of the film structure 110 to release the film structure 110, but is not limited to this. 23, when clamp 470 holds film structure 110, the clamp 470 prevents film structure 110 from moving downward.

When switching from the second mode (FIG. 21) to the first mode (FIG. 23), as shown in FIG. 22, the mode change drive signal DV3_C is transmitted to the actuator 120 (e.g., the first operation part ( 122), the free end FE of the film structure 110 (e.g., the first free end FE1 of the first flap 112) may be moved upward and above the first position. . Then, as shown in FIG. 23 , clamp 470 can be moved toward free end FE of film structure 110 and apply a first mode drive signal (e.g., drive signal DV3_1). Upon application of the actuator 120 the free end FE of the film structure 110 may be moved downward to a first position so that the clamp 470 may maintain the film structure 110 in the first position.

Conversely, when switching from the first mode (FIG. 23) to the second mode (FIG. 21), the mode change drive signal DV3_C is applied to the actuator 120 (e.g., the first actuating portion 122) to The free end FE of the structure 110 (eg, the first free end FE1 of the first flap 112) may be moved upward and above the first position. Clamp 470 can then be moved away from free end FE of film structure 110 and applying a second mode drive signal (e.g., drive signal DV3_2) to actuator 120 The free end FE of the film structure 110 may droop down and be below the first and flat position.

For example, because the clamp 470 holds the film structure 110 in the first position, the first mode drive signal (e.g., drive signal DV3_1 can be 0V or ground voltage, or the actuator 120 ) may be floating in the first mode, thereby reducing the power consumption of the venting device 900 in the first mode (e.g., the power consumed by the venting device 900 in the first mode is 0.3 μW). is not limited thereto. That is, after the clamp 470 holds the film structure 110 in the first position, no voltage is applied to the actuator 120 and the vent 130T is closed (venting device (900) is in the first mode).

In this case, the first mode driving signal (e.g., driving signal DV3_1) and the second mode driving signal (e.g., driving signal DV3_2) are 0V or ground voltage, or the actuator 120 operates in the first mode and the second mode. By being floating, power consumption of the venting device 900 can be reduced.

Moreover, in some embodiments, after clamp 470 holds film structure 110 in the first position, clamp 470 is not energized and vent 130T is closed, causing the venting device 900 to close. Power consumption is reduced. In some embodiments, after clamp 470 releases film structure 110, no voltage is applied to clamp 470, thereby reducing power consumption of venting device 900.

Referring to FIG. 24, FIG. 24 is a schematic cross-sectional view showing the film structure of the venting device according to the tenth embodiment of the present invention, and FIG. 21 shows the second mode of the venting device 100. Compared to the venting device 100 shown in FIGS. 1 to 5, the venting device 1000 shown in FIG. 24 has a plurality of film structures ( 110). In the first mode, the film structure 110 may be moved to a first position and maintained in this position. In the second mode, the film structure 110 may be bent downward and below the first and flat positions. It should be noted that the film structure 110 may be integrated into the same chip (CP) or may belong to a different chip (CP) (e.g., in FIG. 24, the film structure 110 belongs to a different chip (CP)).

In the second mode shown in FIG. 24 , a plurality of small vents 130TS may be formed by the film structure 110 . The width of the small vent 130TS formed between two opposing side walls of the slit 130 in the second mode is larger than the width of the gap 130P existing between the two opposing side walls of the slit 130 in the first mode. big. Since the venting device 1000 has a plurality of film structures 110 to form a plurality of small vents 130TS, the effect of the plurality of small vents 130TS shown in FIG. 24 is similar to that of one vent 130T in another embodiment. ) is the same as the effect of Accordingly, the occlusion effect will be suppressed by the venting device 1000 in the second mode shown in FIG. 24.

Moreover, the film structure 110 can be bent downward, so that the driving signal DV1_2 and DV2_2 are 0V or ground voltage, or the first operating portion 122 and the second operating portion 124 are floating. It may be an enemy, but it is not limited to this. So, the power consumption of the venting device 1000 in the second mode is reduced.

In short, due to the presence of the slit, the vent device can either form a vent to suppress the occlusion effect or close the vent to enable the acoustic transducer to perform high-performance acoustic transduction. That is, the slit serves as a dynamic front vent of the venting device.

Those skilled in the art will readily appreciate that many modifications and variations of the apparatus and methods may be made while retaining the teachings of the present invention. Accordingly, the above disclosure should be construed as limited only by the scope of the appended claims.

Claims (20)

A venting device disposed within or to be disposed within a wearable sound device, comprising:
anchor structures;
a film structure comprising an anchor end secured to the anchor structure and a free end, the film structure configured to form a vent or close a vent; and
Comprising an actuator disposed on the film structure,
the film structure divides the space into a first volume and a second volume,
When the vent is formed, the first volume and the second volume are connected through the vent,
The venting device is controlled by a controller to seal the vent when the controller determines to close the vent. According to paragraph 1,
When the controller determines to close the vent, the film structure is actuated and maintained in a first position in accordance with a voltage generated by the controller,
The first position is parallel to the base on which the venting device is disposed. According to paragraph 1,
A venting device further comprising a clamp configured to maintain the film structure in a first position when the controller determines to close the vent. According to paragraph 3,
After the clamp holds the film structure in the first position, the actuator is deenergized and the vent is closed. According to paragraph 3,
The clamp prevents the free end of the film structure from moving downward or upward. According to paragraph 3,
Venting device, wherein the clamp is laterally disposed by the film structure when viewed in plan view. According to paragraph 3,
A venting device, wherein the clamp moves horizontally when the clamp is actuated. According to paragraph 3,
After the clamp holds the film structure in the first position, no voltage is applied to the clamp and the vent is closed. According to paragraph 1,
If the controller does not decide to close the vent, the film structure is bent downward and below a flat position, forming the vent;
The venting device wherein the flat position is parallel to the base on which the venting device is disposed. According to paragraph 1,
If the controller does not decide to close the vent, no voltage is applied to the actuator, so that the film structure droops down and is below a flat position, forming the vent, and
The venting device wherein the flat position is parallel to the base on which the venting device is disposed. According to paragraph 1,
The film structure includes a first flap and a second flap,
The actuator includes a first actuating portion disposed on the first flap and a second actuating portion disposed on the second flap. According to clause 11,
When the controller determines to close the vent, the first and second flaps are actuated and held in a first position to close the vent. According to clause 11,
The venting device includes a fixation structure disposed between the first flap and the second flap,
If the controller does not decide to close the vent, the first and second flaps are bent downward and below a flat position, forming the vent;
The venting device wherein the flat position is parallel to the base on which the venting device is disposed. According to clause 13,
Wherein the anchoring structure is parallel to the base. According to clause 11,
If the controller does not decide to close the vent, no voltage is applied to the first actuating portion. According to clause 11,
When the controller determines to form the vent, the first flap is actuated by a first voltage to move in a first direction, and the second flap is actuated by a second voltage to move in a first direction opposite to the first direction. moves in 2 directions,
Wherein the first voltage and the second voltage are generated by the controller. According to paragraph 1,
Slits are formed in the film structure to form a clamp structure,
A clamp structure formed on the film structure is configured to suppress deformation of the film structure when the controller determines to form a vent. According to clause 17,
The clamp structure has two clamp elements, and the clamp elements buckle against each other when the clamp structure suppresses deformation of the film structure. According to paragraph 1,
a fixing structure disposed at the base adjacent to the film structure; and
A venting device comprising a clamp disposed on the fixing structure. According to paragraph 1,
A venting device, wherein the wearable sound device includes the controller and an acoustic transducer configured to perform acoustic conversion.