Packaging structure for electronic cigarette sensing sensor, three-wire microphone structure and electronic cigarette

Abstract

The present invention provides a packaging structure for an electronic cigarette sensing sensor, a three-wire microphone structure, and an electronic cigarette, wherein the packaging structure includes a shell having an annular opening, a substrate, and a sensing component. The packaging structure is intended to be provided with a first air permeable structure on the packaging structure for the electronic cigarette sensing sensor, and utilizes the first air permeable hole and the first baffle of the first air permeable structure and the side surface of the substrate facing the cavity to form an air intake channel, thereby not only being able to adjust the air intake volume per unit time of gas mixed with tobacco oil from the electronic cigarette chamber, but also being able to prevent tobacco oil in the gas from directly invading the cavity of the packaging structure of the electronic cigarette sensing sensor. Therefore, tobacco oil in the gas from the electronic cigarette chamber can be well isolated, and tobacco oil can be prevented from contaminating the sensing component in the packaging structure for the electronic cigarette sensing sensor, thereby preventing problems such as false triggering and short circuit caused by tobacco oil entering the interior of the sensing component.

Description

Technical Field

[0001] The present invention relates to the field of packaging technology, and more particularly to a packaging structure for an electronic cigarette sensing sensor, a three-wire microphone structure, and an electronic cigarette. Background Art

[0002] Devices based on micro-electro-mechanical systems (MEMS) are called MEMS devices. They primarily consist of a diaphragm and a backplate, separated by a gap. Changes in air pressure cause the diaphragm to deform, altering the capacitance between the diaphragm and the electrode plate, which is then converted into an electrical signal for output.

[0003] In the prior art, the packaging structure of sensing sensors made of MEMS devices will be used in some special environments. For example, in the environment where there are pollutants such as oil, if these pollutants enter the gap between the vibrating membrane and the back plate, these pollutants can easily cause false triggering and short circuit problems between the vibrating membrane and the electrode plate, thereby causing the MEMS device to fail.

[0004] Figure 1A A schematic top view of a packaging structure for an electronic cigarette sensing sensor provided in the prior art. Figure 1B A schematic side view of a packaging structure for an electronic cigarette sensing sensor provided in the prior art. Figure 1C A schematic diagram of a bottom-up structure of a packaging structure for an electronic cigarette sensing sensor provided in the prior art.

[0005] See also Figure 1A-1C As shown, a packaging structure 100' for an electronic cigarette sensing sensor provided in the prior art includes: a shell 10', a substrate 20', and an electronic cigarette sensing component (not shown). The shell 10' and the substrate 20' form a cavity. The electronic cigarette sensing component is fixedly connected to a surface of the substrate 20' facing the cavity and is located in the cavity. A first air vent 60' is provided on the substrate 20', which passes through the substrate 20' and communicates with the external environment of the electronic cigarette. A second air vent 30' is provided on the shell 10', which passes through the shell 10' and communicates with the smoke chamber of the electronic cigarette. The shape of the second air vent 30' can be circular, thin strip or microporous. However, the above shapes cannot avoid the intrusion of smoke oil from the smoke chamber of the electronic cigarette, which may cause the electronic cigarette sensing component to be falsely triggered.

[0006] Therefore, it is desired to provide an improved packaging structure for an electronic cigarette sensing sensor to improve product performance. Summary of the Invention

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art and provides a packaging structure for an electronic cigarette sensing sensor, a three-wire microphone structure, and an electronic cigarette.

[0008] The purpose of the present invention is achieved by the following technical solutions:

[0009] According to one aspect of the present invention, a packaging structure for an electronic cigarette sensing sensor is provided. The packaging structure includes a housing having an annular opening, a substrate, and a sensing component. The housing and the substrate form a cavity. The sensing component is fixedly connected to a surface of the substrate facing the housing and is located within the cavity. A first through hole is formed in the substrate, and the sensing component covers the first through hole. The first through hole is connected to the external environment of the electronic cigarette.

[0010] The packaging structure further includes a first air-permeable structure, one side surface of the sensing component is in communication with the first through-hole, and the other side surface of the sensing component is in communication with the smoke chamber of the electronic cigarette via the first air-permeable structure, so as to sense the pressure difference between the external environment of the electronic cigarette and the smoke chamber of the electronic cigarette;

[0011] In which, the first ventilation structure includes a first ventilation hole and a first retaining wall, the first ventilation hole is arranged at the connection between the substrate and the shell having the annular opening portion, the first retaining wall is arranged on the side surface of the substrate facing the shell, and the first retaining wall is arranged around the first ventilation hole in the extension direction of the first ventilation hole toward the inside of the cavity.

[0012] Furthermore, in the thickness direction of the substrate, the substrate includes a base material layer, a metal layer and an ink layer stacked in sequence; wherein the first retaining wall is composed of at least one metal layer located on the substrate.

[0013] Furthermore, in the thickness direction of the substrate, a height of a top of the first retaining wall on a side away from the base material layer is lower than a height of a top of the first vent hole on a side away from the base material layer.

[0014] Furthermore, the first retaining wall has a cross-sectional width of a preset size, and in the thickness direction of the substrate, the projection shape of the first retaining wall on the substrate is annular.

[0015] Optionally, in the thickness direction of the substrate, a projection shape of the first retaining wall on the substrate is U-shaped.

[0016] Furthermore, in the thickness direction of the substrate, the area on the substrate where the connection with the shell is located is divided into a first area provided with a connector and a second area not provided with a connector, wherein the first area is covered by the metal layer; the first air vent is formed based on the height difference formed between the thickness of the connector and the surface of the second area on the substrate, or the first air vent is formed based on the height difference formed between the sum of the thickness of the connector and the thickness of the metal layer and the surface of the second area on the substrate.

[0017] Furthermore, the first breathable structure also includes a second retaining wall, which is arranged on a side surface of the substrate facing the shell; wherein, in the extension direction of the first breathable hole toward the inside of the cavity, the second retaining wall is arranged around the first retaining wall.

[0018] Furthermore, the second retaining wall is formed by at least one metal layer located on the substrate.

[0019] Furthermore, the radial distance between the second retaining wall and the first retaining wall at each position in the extension direction thereof is equal.

[0020] Optionally, the first retaining wall is connected to the metal layer located above the first region; and the second retaining wall is connected to the metal layer located above the first region.

[0021] Furthermore, a first groove is provided between the second retaining wall and the first retaining wall.

[0022] Furthermore, the bottom of the first groove is an exposed substrate layer.

[0023] Optionally, a second groove is provided between the first retaining wall and the metal layer located above the first region; and the second retaining wall is connected to the metal layer located above the first region.

[0024] Furthermore, a first groove is provided between the second retaining wall and the first retaining wall;

[0025] Furthermore, the first groove is communicated with the second groove to form a third groove.

[0026] Furthermore, the bottom of the third groove is an exposed substrate layer.

[0027] Furthermore, the first air permeable structure also includes a third retaining wall, which is arranged on a side surface of the substrate facing the shell; wherein, in the extension direction of the first air permeable hole toward the inside of the cavity, the third retaining wall is arranged around the second retaining wall.

[0028] Furthermore, the third retaining wall is formed by an ink layer located on the substrate.

[0029] Furthermore, radial distances between the third retaining wall and the second retaining wall at various positions along the extending direction of the third retaining wall are equal.

[0030] Furthermore, a fourth groove is provided between the third retaining wall and the second retaining wall, and the bottom of the fourth groove is an exposed substrate layer.

[0031] Optionally, the first retaining wall has a first edge portion that is flush with the edge of the first air vent on one side away from the cavity, and a first groove and a second groove that are recessed toward the interior of the cavity are provided on the first edge portion, and the first groove and the second groove are provided on both sides of the first air vent.

[0032] Furthermore, the cross-sectional shape of the first air vent is an elongated strip; wherein the cross-sectional length of the first air vent is 0.02 mm to 0.6 mm, and the cross-sectional width of the first air vent is 0.2 mm to 1.0 mm.

[0033] Furthermore, the first ventilation structure further includes a stop block, which is arranged on a side surface of the substrate facing the shell, and the stop block passes through the first ventilation hole.

[0034] Furthermore, the stop block is composed of at least one metal layer located on the substrate.

[0035] Furthermore, the radial distance between the first retaining wall and the stop block at each position in the extension direction thereof is equal.

[0036] Furthermore, a fifth groove is provided between the stopping block and the first retaining wall.

[0037] Furthermore, the bottom of the fifth groove is an exposed substrate layer.

[0038] According to another aspect of the present invention, a three-wire microphone structure is provided, comprising a substrate having a first surface, on which any of the above-described package structures is disposed; and at least one lead pad spaced apart from the package structure is also disposed on the first surface for electrical connection to an external electrical device.

[0039] According to another aspect of the present invention, an electronic cigarette is provided, comprising the above-mentioned three-wire microphone structure.

[0040] The packaging structure, three-wire microphone structure, and electronic cigarette provided by the present invention are intended to be provided with a first air permeable structure on the packaging structure for the electronic cigarette sensing sensor, and to form an air intake channel by utilizing the first air permeable hole and the first baffle wall of the first air permeable structure and the surface of the substrate facing the cavity. This can not only regulate the air intake volume per unit time of the gas mixed with tobacco oil from the electronic cigarette chamber, but also prevent the tobacco oil in the gas from directly invading the cavity of the packaging structure of the electronic cigarette sensing sensor. Therefore, the tobacco oil in the gas from the electronic cigarette chamber can be effectively isolated, and the tobacco oil can be prevented from contaminating the sensing component in the packaging structure for the electronic cigarette sensing sensor, thereby preventing the tobacco oil from entering the sensing component and causing problems such as false triggering and short circuit.

[0041] The technical solution provided by the present invention can significantly prevent the tobacco oil in the gas from the electronic cigarette chamber from contaminating the sensing components in the packaging structure, thereby improving the reliability of the packaging structure product for the electronic cigarette sensing sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other implementation methods can be obtained based on these drawings without paying any creative work.

[0043] Figure 1A A schematic top view of a packaging structure for an electronic cigarette sensing sensor provided in the prior art.

[0044] Figure 1B A schematic side view of a packaging structure for an electronic cigarette sensing sensor provided in the prior art.

[0045] Figure 1C A schematic diagram of a bottom-up structure of a packaging structure for an electronic cigarette sensing sensor provided in the prior art.

[0046] Figure 2A The figure is a schematic top view of a packaging structure for an electronic cigarette sensing sensor provided by an embodiment of the present invention.

[0047] Figure 2B The figure is a side view structural diagram of a packaging structure for an electronic cigarette sensing sensor provided by an embodiment of the present invention.

[0048] Figure 2C 1 is a bottom-up structural schematic diagram of a packaging structure for an electronic cigarette sensing sensor provided by an embodiment of the present invention.

[0049] Figure 3A It is a side view of a first air permeable structure in a packaging structure of an electronic cigarette sensing sensor provided by one embodiment of the present invention.

[0050] Figure 3B 1 is a side view of a first air permeable structure in a packaging structure of an electronic cigarette sensing sensor provided by another embodiment of the present invention.

[0051] Figure 4A This is Example 1 of a schematic top view of a substrate in a packaging structure of an electronic cigarette sensing sensor provided by an embodiment of the present invention.

[0052] Figure 4B This is Example 2 of a top view structural schematic diagram of a substrate in a packaging structure for an electronic cigarette sensing sensor provided by an embodiment of the present invention.

[0053] Figure 4C This is Example 3 of a top view structural schematic diagram of a substrate in a packaging structure for an electronic cigarette sensing sensor provided by an embodiment of the present invention.

[0054] Figure 4D This is Example 4 of a structural schematic diagram of a substrate in a packaging structure for an electronic cigarette sensing sensor provided by an embodiment of the present invention.

[0055] Figure 5A The embodiment of the present invention provides a packaging structure for an electronic cigarette sensing sensor. Figure 4A Schematic diagram of the cross-sectional structure along the AA' direction.

[0056] Figure 5B The embodiment of the present invention provides a packaging structure for an electronic cigarette sensing sensor. Figure 4B Schematic diagram of the cross-sectional structure along the BB' direction.

[0057] Figure 5C The embodiment of the present invention provides a packaging structure for an electronic cigarette sensing sensor. Figure 4C Schematic diagram of the cross-sectional structure along the C-C' direction.

[0058] Figure 6 This is an example diagram of a packaging structure for an electronic cigarette sensing sensor provided by an embodiment of the present invention applied to a three-wire microphone structure. DETAILED DESCRIPTION

[0059] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with reference to the accompanying drawings.

[0060] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, or mutual communication; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0061] Figure 2A The figure is a schematic top view of a packaging structure for an electronic cigarette sensing sensor provided by an embodiment of the present invention. Figure 2B The figure is a side view structural diagram of a packaging structure for an electronic cigarette sensing sensor provided by an embodiment of the present invention. Figure 2C 1 is a bottom-up structural schematic diagram of a packaging structure for an electronic cigarette sensing sensor provided by an embodiment of the present invention. Figure 4A This is Example 1 of a schematic top view of a substrate in a packaging structure of an electronic cigarette sensing sensor provided by an embodiment of the present invention. Figure 5A The embodiment of the present invention provides a packaging structure for an electronic cigarette sensing sensor. Figure 4A Schematic diagram of the cross-sectional structure along the AA' direction.

[0062] See also Figure 2A-2C 、 Figure 4A 、 Figure 5AAs shown, an embodiment of the present invention provides a packaging structure 100 for an electronic cigarette sensing sensor, comprising: a shell 10 having an annular opening 12, a substrate 20, and a sensing component 40, wherein the shell 10 and the substrate 20 form a cavity 101, the sensing component 40 is fixedly connected to a side surface of the substrate 20 facing the shell 10 and is located in the cavity 101, a first through hole 60 is opened on the substrate 20, the sensing component 40 covers the first through hole 60, and the first through hole 60 is connected to the external environment of the electronic cigarette, the packaging structure 100 also includes a first air permeable structure 110, and a side surface of the sensing component 40 is in contact with the first through hole 60 is connected, and the other side surface of the sensing component 40 is connected to the smoke chamber of the electronic cigarette via the first breathable structure 110 to sense the pressure difference between the external environment of the electronic cigarette and the smoke chamber of the electronic cigarette; wherein, the first breathable structure 110 includes a first air hole 111 and a first retaining wall 2031, the first air hole 111 is arranged at the connection between the substrate 20 and the shell 10 having the annular opening portion 12, the first retaining wall 2031 is arranged on the side surface of the substrate 20 facing the shell 10, and in the extension direction of the first air hole 111 toward the inside of the cavity 101, the first retaining wall 2031 is arranged around the first air hole 111.

[0063] For example, in some embodiments, the sensing component 40 includes a MEMS chip for pressure conversion. In some embodiments, the sensing component 40 includes a differential pressure sensor chip electrically connected to an ASIC (Application Specific Integrated Circuit) chip for signal amplification.

[0064] For example, in this embodiment of the present invention, substrate 20 is a printed circuit board (PCB). A PCB supports electronic components (such as MEMS and AEIC devices) and serves as a carrier for electrical connections between these components. For example, copper is laid on the PCB to serve as connecting conductors.

[0065] Illustratively, in an embodiment of the present invention, the housing 10 is a metal housing, also referred to as a shielding housing. The metal housing is fixed on the substrate 20 to form a cavity 101 to shield external electromagnetic interference.

[0066] After the shell 10 and the substrate 20 are bonded and fixed, the packaging structure 100 is connected to the cigarette chamber of the electronic cigarette via the position where the first air permeable structure 110 is located, so that the packaging structure 100 can sense the pressure difference signal between the first through hole 60 and the first air permeable structure 110.

[0067] The technical solution provided by the embodiment of the present invention aims to provide a first air-permeable structure on the packaging structure of the electronic cigarette sensing sensor, and utilize the first air-permeable hole and the first baffle wall of the first air-permeable structure and the surface of the side of the substrate facing the cavity to form an air intake channel, so as to not only adjust the air intake volume of the gas mixed with tobacco oil from the electronic cigarette smoke cavity per unit time, but also prevent the tobacco oil in the gas from directly invading the cavity of the packaging structure of the electronic cigarette sensing sensor. Therefore, the tobacco oil in the gas from the electronic cigarette smoke cavity can be well isolated, and the tobacco oil can be prevented from contaminating the sensing component in the packaging structure of the electronic cigarette sensing sensor, thereby preventing the tobacco oil from entering the sensing component and causing problems such as false triggering and short circuit.

[0068] Figure 3A 1 is a side view of a first air permeable structure in a packaging structure for an electronic cigarette sensor provided by an embodiment of the present invention. A portion of the connection between the substrate 20 and the housing 10 is not provided with a connector. For example, Figure 3A As shown, in the thickness direction of the substrate 20, the area where the substrate 20 is connected to the housing 10 is divided into a first area 21 with a connecting agent and a second area 22 without a connecting agent;

[0069] The first breathable structure 110 is formed based on the height difference between the thickness of the connecting agent 50 and the surface of the second region 22 on the substrate 20 .

[0070] Specifically, if Figure 3A As shown, in some embodiments of the present invention, in the thickness direction of the substrate 20, the substrate 20 includes a base material layer 201, a metal layer 203, and an ink layer 202 stacked in sequence. Generally, the more metal layers 203 a substrate 20 has, the thicker it is, typically between 0.25 mm and 1.0 mm. The thickness of the base material layer 201 is generally around 0.02 mm.

[0071] In which, the metal layers 203 located on the first area 21 and the second area 22 are both exposed; after the shell 10 and the substrate 20 are connected by the connector 50, in the thickness direction of the substrate 20, based on the height difference formed by the thickness of the connector 50 and the surface of the metal layer 203 on the substrate 20, a gap H1 of a first preset size is provided between the shell 10 and the surface of the second area 22 on the substrate 20 to form the gap below the air vent 111.

[0072] Exemplarily, the cross-sectional shape of the first air hole 111 is an elongated strip; wherein, the cross-sectional height of the first air hole 111 is determined by the gap H1 of the first preset size mentioned above, for example, it can be 0.02mm~0.6mm, so that the pores of the first air hole 111 are relatively small, so that the gas from the electronic cigarette chamber can be passed through the first air hole 111 into the cavity 101 of the packaging structure 100 by utilizing the capillary pore ventilation principle, and to a certain extent, it can also prevent the smoke oil in the electronic cigarette chamber from entering the interior of the sensing component 40.

[0073] The cross-sectional width of the first vent hole 111 may be determined by the length of the second region 22 , for example, 0.2 mm to 1.0 mm, so as to form ventilated elongated micropores on the side of the packaging structure 100 .

[0074] Exemplarily, the connecting agent 50 is a solder, and the housing 10 having the annular opening 12 is fixedly connected to the surface of the exposed metal layer 203 located on the first region 21 via the solder. Optionally, in this embodiment, the solder is a tin-containing soldering material, such as solder paste containing flux.

[0075] Figure 3B 1 is a side view of a first air permeable structure in a packaging structure of an electronic cigarette sensing sensor provided by another embodiment of the present invention.

[0076] Specifically, if Figure 3B As shown, in some embodiments, in the thickness direction of the substrate 20, the substrate 20 includes a base material layer 201 and a metal layer 203 stacked in sequence; generally, the more layers of metal layer 203 corresponding to the substrate 20, the thicker the corresponding thickness is, generally between 0.25 mm and 1.0 mm, and the thickness of the base material layer 201 is generally about 0.02 mm.

[0077] Among them, the metal layer 203 located on the first area 21 is exposed, and the base material layer 201 located on the second area 22 is exposed; after the shell 10 and the substrate 20 are connected by the connector 50, in the thickness direction of the substrate 20, based on the height difference formed by the sum of the thickness of the connector 50 and the thickness of the metal layer 203 and the surface of the base material layer 201 on the substrate 20, a gap H2 of a second preset size is provided between the shell 10 and the surface of the second area 22 on the substrate 20 to form the gap below the air vent 111.

[0078] Exemplarily, the cross-sectional shape of the first air hole 111 is an elongated strip; wherein, the cross-sectional height of the first air hole 111 is determined by the second preset size gap H2 mentioned above, for example, it can be 0.02mm~0.6mm, so that the pores of the first air hole 111 are relatively small, so that the gas from the electronic cigarette smoke chamber can be introduced into the cavity 101 of the packaging structure 100 through the first air hole 111 by utilizing the capillary pore ventilation principle, and to a certain extent, it can also prevent the smoke oil in the electronic cigarette smoke chamber from entering the interior of the sensing component 40.

[0079] The cross-sectional width of the first vent hole 111 is determined by the length of the second region 22 , and may be, for example, 0.2 mm to 1.0 mm, so as to form ventilated elongated micropores on the side of the packaging structure 100 .

[0080] In this embodiment, the metal layer on the first region 21 is exposed, and the base material layer on the second region 22 is exposed. The connecting agent 50 is a solder, and the annular opening 12 is fixedly connected to the metal layer on the first region 21 via the solder. Optionally, in this embodiment, the solder is a tin-containing soldering material, such as solder paste containing flux.

[0081] Figure 4A This is a schematic diagram of a top view of a substrate in a packaging structure of an electronic cigarette sensing sensor provided by an embodiment of the present invention. Figure 4B This is a second example of a schematic top view of a substrate in a packaging structure of an electronic cigarette sensing sensor provided by an embodiment of the present invention. Figure 4C This is a third example of a schematic top view of a substrate in a packaging structure of an electronic cigarette sensing sensor provided by an embodiment of the present invention. Figure 4D This is Example 4 of a structural schematic diagram of a substrate in a packaging structure for an electronic cigarette sensing sensor provided by an embodiment of the present invention.

[0082] Figure 5A The embodiment of the present invention provides a packaging structure for an electronic cigarette sensing sensor. Figure 4A The cross-sectional structural diagram along the A-A' direction is shown in FIG. Figure 5B The embodiment of the present invention provides a packaging structure for an electronic cigarette sensing sensor. Figure 4B Schematic diagram of the cross-sectional structure along the BB' direction, Figure 5C The embodiment of the present invention provides a packaging structure for an electronic cigarette sensing sensor. Figure 4C Schematic diagram of the cross-sectional structure along the C-C' direction.

[0083] The following Figures 4A-4D 、 Figures 5A-5C The technical solutions provided in the embodiments of the present invention are exemplified.

[0084] Example 1

[0085] Combine Figure 4A 、 Figure 5A As shown, a first area 21 and a second area 22 are provided on the surface of one side of the substrate 20 facing the cavity 101. A connecting agent 50 is provided on the first area 21, and no connecting agent 50 is provided on the second area 22. The purpose is: after the shell 10 and the substrate 20 are bonded together by the connecting agent 50 located on the first area 21, a gap of a preset size is provided between the second area 22 and the shell 10 in the thickness direction of the substrate 20 to form the first air vent 111.

[0086] In the extension direction of the first air vent 111 toward the interior of the cavity 101, the first air permeable structure 110 also includes a first retaining wall 2031 arranged on a side surface of the substrate 20 facing the shell 10, wherein, in the extension direction of the first air vent 111 toward the interior of the cavity 101, the first retaining wall 2031 is arranged around the first air vent 111.

[0087] By providing at least one first retaining wall 2031 around the first air hole 111, the first retaining wall 2031, the first air hole 111 and the surface of the substrate 20 facing the cavity 101 together form an air intake channel, thereby being able to regulate the intake volume of the gas mixed with tobacco oil from the electronic cigarette chamber per unit time, and at the same time, blocking the entry of tobacco oil to avoid affecting the operation of the MEMS chip.

[0088] For example, in this embodiment of the present invention, the first retaining wall 2031 is formed by at least one metal layer 203 located on the substrate 20. That is, the first retaining wall 2031 is integrally formed with the substrate 20 and can be formed by a single layer of metal on the substrate 20 or by stacking multiple layers of metal on the substrate 20.

[0089] Furthermore, in the thickness direction of the substrate 20, a predetermined height difference D1 is defined between the top of the first retaining wall 2031 on the side away from the substrate layer 201 and the top of the first ventilation hole 111 on the side away from the substrate layer 201. That is, in the thickness direction of the substrate 20, the top of the first retaining wall 2031 on the side away from the substrate layer 201 is lower than the top of the first ventilation hole 111 on the side away from the substrate layer 201, thereby allowing gas from the e-cigarette chamber to pass smoothly. Generally, the mass of e-liquid is relatively large. Therefore, when gas from the e-cigarette chamber enters the chamber 101 through the first ventilation hole 111, the e-liquid in the gas, upon contacting the first retaining wall 2031, sinks to the area between the first retaining wall 2031 and the substrate 20, thereby preventing it from invading the sensing assembly 40 located within the chamber 101.

[0090] Furthermore, in order to better prevent the smoke oil in the gas from the electronic cigarette chamber from invading the sensing component 40, in the thickness direction of the substrate 20, the projection shape of the first retaining wall 2031 on the substrate 20 is annular to block the smoke oil in the gas flowing in from all directions through the first breathable structure 110, and the first retaining wall 2031 has a cross-sectional width of a preset size to ensure that the first retaining wall 2031 has a certain mechanical strength.

[0091] Optionally, in the thickness direction of the substrate 20 , the projection shape of the first retaining wall 2031 on the substrate 20 is U-shaped.

[0092] To further prevent smoke oil from invading the sensing component 40 and thereby affecting the operation of the MEMS chip, the first air-permeable structure 110 illustratively further includes a second retaining wall 2032 disposed on a surface of the substrate 20 facing the housing 10. The second retaining wall 2032 surrounds the first retaining wall 2031 in the direction from which the first air hole 111 extends toward the interior of the cavity 101. In other words, after smoke oil in the gas passing through the smoke chamber is initially blocked by the first retaining wall 2031, it is also blocked a second time by the second retaining wall 2032, thereby providing better protection and preventing smoke oil in the electronic cigarette chamber from invading the sensing component 40 within the cavity 101.

[0093] For example, in this embodiment of the present invention, the second retaining wall 2032 is formed by at least one metal layer 203 located on the substrate 20, and the second retaining wall 2032 is connected to the metal layer 203 located above the first region 21. In other words, the second retaining wall 2032 is integrally formed with the substrate 20 and can be formed by a single layer of metal on the substrate 20 or by stacking multiple layers of metal on the substrate 20.

[0094] Furthermore, the radial spacing between the second retaining wall 2032 and the first retaining wall 2031 at all positions along its extension direction is equal, so that the first retaining wall 2031 and the second retaining wall 2032 cooperate to evenly block the intrusion of smoke oil in all directions.

[0095] For example, in this embodiment, the first retaining wall 2031 is connected to the metal layer 203 located above the first region 21, thereby forming a storage space for e-liquid. Furthermore, to prevent the e-liquid from flowing, smoking cotton sheets can be attached within and / or adjacent to this storage space to absorb and filter the e-liquid-mixed gas from the e-cigarette chamber. Furthermore, the second retaining wall 2032 is connected to the metal layer 203 located above the first region 21.

[0096] Furthermore, in order to provide sufficient space for accommodating the e-liquid and to prevent the contamination caused by the intrusion of the e-liquid, a first groove 2041 is provided between the second retaining wall 2032 and the first retaining wall 2031 .

[0097] Optionally, the bottom of the first groove 2041 is the exposed substrate layer 201 , which can increase the depth of the first groove 2041 on the one hand, and prevent smoke oil from contaminating and corroding the metal layer 203 on the surface of the substrate 20 , thereby causing corrosion of the metal layer 203 .

[0098] Furthermore, the radial cross-sectional widths of the first groove 2041 at various positions along its extending direction are equal.

[0099] Example 2

[0100] Combine Figure 4B 、 Figure 5B As shown, Figure 4A The difference is that the first retaining wall 2031 is not connected to the metal layer 203 located above the first area 21, but a second groove 2042 is provided between the first retaining wall 2031 and the metal layer 203 located above the first area 21; and the second retaining wall 2032 is connected to the metal layer 203 located above the first area 21.

[0101] In this embodiment, a first groove 2041 is provided between the second retaining wall 2032 and the first retaining wall 2031 ; the first groove 2041 is communicated with the second groove 2042 to form a third groove 2043 .

[0102] Furthermore, the bottom of the third groove 2043 is the exposed substrate layer 201 ; on the one hand, the depth of the third groove 2043 can be increased, and on the other hand, the smoke oil pollution can be prevented from corroding the metal layer 203 on the surface of the substrate 20, thereby causing corrosion of the metal layer 203.

[0103] Furthermore, in the extension direction of the first air vent 111 toward the interior of the cavity 101, the first air permeable structure 110 also includes a third retaining wall 2033 arranged on a side surface of the substrate 20 facing the shell 10, and the third retaining wall 2033 is located on the side of the second retaining wall 2032 away from the first retaining wall 2031, and is arranged around the second retaining wall 2032.

[0104] Considering the varying oleophilicity of different e-liquids for different materials, in general, when the copper foil is not exposed, the ink layer 202 has a greater oleophobic effect than the metal layer 203. In some embodiments, the ink layer 202 directly covers the substrate layer 201 to form a third retaining wall 2033. In other words, the third retaining wall 2033 is formed by the ink layer 202 located on the substrate 20. Of course, in practical applications, combinations of different retaining walls can be designed to better prevent the intrusion of e-liquid.

[0105] Furthermore, the radial distance between the third retaining wall 2033 and the second retaining wall 2032 at each position in the extension direction thereof is equal.

[0106] Furthermore, in order to provide sufficient space for accommodating the e-liquid and to prevent contamination by the intrusion of the e-liquid, a fourth groove 2044 is provided between the third retaining wall 2033 and the second retaining wall 2032 in the extension direction of the first breathable structure 110 toward the interior of the cavity 101 .

[0107] Optionally, the bottom of the fourth groove 2044 is the exposed substrate layer 201 , which can increase the depth of the fourth groove 2044 and prevent smoke oil from contaminating and corroding the metal layer 203 on the surface of the substrate 20 , thereby causing corrosion of the metal layer 203 .

[0108] Example 3

[0109] Combine Figure 4C 、 Figure 5CAs shown, in the extension direction of the first air vent 111 toward the inside of the cavity 101, the first air vent structure 110 also includes a stop block 205 arranged on the side surface of the substrate 20 facing the shell 10, and the stop block 205 is passed through the first air vent 111.

[0110] Exemplarily, the stopper 205 is formed by at least one metal layer 203 located on the substrate 20. That is, the stopper 205 is integrally formed with the substrate 20 and can be formed by a layer of metal on the substrate 20 or by stacking multiple layers of metal on the substrate 20.

[0111] In the thickness direction of the substrate 20, a predetermined height difference exists between the top of the stopper 205 on the side away from the base layer 201 and the top of the first breathable structure 110 on the side away from the base layer 201. This technical solution can further reduce the size of the air inlet port of the first breathable structure 110 compared to the structure of Example 1, thereby forming a finer capillary pore structure.

[0112] For example, in this embodiment, the shape of the stop block 205 is adapted to the shape of the first retaining wall 2031; since the shape of the first retaining wall 2031 is annular, the contour of the end of the stop block 205 toward the sensing component 40 is an arc adapted thereto.

[0113] Exemplarily, the radial distance between the first retaining wall 2031 and the stop block 205 at each position along the extension direction thereof is equal.

[0114] Furthermore, to provide sufficient space for accommodating tobacco liquid and to prevent contamination from tobacco liquid intrusion, a fifth groove 2045 is provided between the stop block 205 and the first retaining wall 2031. In this embodiment, the fifth groove 2045, in conjunction with the first retaining wall 2031, effectively isolates solder and flux, preventing them from clogging the first vent structure and avoiding reflow caused by excessive solder on the first region 21.

[0115] Optionally, the bottom of the fifth groove 2045 is the exposed substrate layer 201. This can increase the depth of the fifth groove 2045 and prevent smoke oil from contaminating and corroding the metal layer 203 on the surface of the substrate 20, thereby causing corrosion of the metal layer 203.

[0116] Example 4

[0117] like Figure 4DAs shown, the first retaining wall 2031 has a first edge portion 2031A that is flush with the edge of the first air hole 111 on one side away from the cavity 101, and a first groove 2061 and a second groove 2062 that are recessed toward the interior of the cavity 101 are provided on the first edge 2031A, and the first groove 2061 and the second groove 2062 are provided on both sides of the first air permeable structure 110.

[0118] Optionally, the bottoms of the first groove 2061 and the second groove 2062 are exposed substrate layer 201 .

[0119] By designing the first groove 2061 and the second groove 2062 , it is possible to reduce the flow of solder paste in the solder onto the first retaining wall 2031 when it melts.

[0120] The present invention further provides a three-wire microphone structure, which includes any one of the packaging structures described above.

[0121] Figure 6 This is an example diagram of a packaging structure for an electronic cigarette sensing sensor provided by an embodiment of the present invention applied to a three-wire microphone structure.

[0122] Exemplarily, the three-wire microphone structure includes a substrate 70, with the aforementioned sensing sensor packaging structure disposed on a first surface of the substrate 70. Also disposed on the first surface of the substrate 70 is at least one lead pad 701, spaced apart from the packaging structure, for electrical connection to an external electrical device.

[0123] The present invention also provides an electronic cigarette, comprising any one of the three-wire microphone structures described above.

[0124] Therefore, the packaging structure, three-wire microphone structure, and electronic cigarette for an electronic cigarette sensor provided by the embodiments of the present invention are designed to provide a first ventilation structure on the packaging structure for the electronic cigarette sensor. The first ventilation holes and first retaining wall of the first ventilation structure, together with the surface of the substrate facing the cavity, form an air inlet channel. This not only regulates the intake volume per unit time of the gas mixed with tobacco oil from the electronic cigarette chamber, but also prevents tobacco oil from directly invading the cavity of the packaging structure of the electronic cigarette sensor. Therefore, tobacco oil from the gas in the electronic cigarette chamber can be effectively isolated, preventing tobacco oil from contaminating the sensing components within the packaging structure of the electronic cigarette sensor. Furthermore, problems such as false triggering and short circuits caused by tobacco oil entering the sensing components can be prevented. The technical solution provided by the present invention can significantly prevent tobacco oil from contaminating the sensing components within the packaging structure, thereby improving the reliability of the packaging structure product for the electronic cigarette sensor.

[0125] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A packaging structure for an electronic cigarette sensing sensor, characterized in that: The packaging structure (100) comprises a shell (10) having an annular opening (12), a substrate (20), and a sensing component (40); the shell (10) and the substrate (20) form a cavity (101); the sensing component (40) is fixedly connected to a surface of the substrate (20) facing the shell (10) and is located in the cavity (101); a first through hole (60) is provided on the substrate (20); the sensing component (40) covers the first through hole (60); and the first through hole (60) is connected to the external environment of the electronic cigarette. The packaging structure (100) further comprises a first air-permeable structure (110); a side surface of the sensing component (40) is in communication with the first through hole (60); and another side surface of the sensing component (40) is in communication with the smoke chamber of the electronic cigarette via the first air-permeable structure (110) to sense a pressure difference between the external environment of the electronic cigarette and the smoke chamber of the electronic cigarette; The first ventilation structure (110) comprises a first ventilation hole (111) and a first retaining wall (2031), wherein the first ventilation hole (111) is arranged at a connection between the substrate (20) and the shell (10) having the annular opening portion (12), and the first retaining wall (2031) is arranged on a side surface of the substrate (20) facing the shell (10), and in an extension direction of the first ventilation hole (111) toward the interior of the cavity (101), the first retaining wall (2031) is arranged around the first ventilation hole (111).

2. The packaging structure according to claim 1, wherein: In the thickness direction of the substrate (20), the substrate (20) comprises a base material layer (201), a metal layer (203), and an ink layer (202) stacked in sequence; Wherein, the first retaining wall (2031) is composed of at least one metal layer (203) located on the substrate (20).

3. The packaging structure according to claim 2, wherein: In the thickness direction of the substrate (20), the height of the top of the first retaining wall (2031) on the side away from the base material layer (201) is lower than the height of the top of the first air vent (111) on the side away from the base material layer (201).

4. The packaging structure according to claim 3, wherein: The first retaining wall (2031) has a cross-sectional width of a preset size, and in the thickness direction of the substrate (20), the projection shape of the first retaining wall (2031) on the substrate (20) is annular.

5. The packaging structure according to claim 4, wherein: In the thickness direction of the substrate (20), the projection shape of the first retaining wall (2031) on the substrate (20) is U-shaped.

6. The packaging structure according to claim 2, wherein: In the thickness direction of the substrate (20), the area on the substrate (20) where the connection with the housing (10) is located is divided into a first area (21) provided with a connecting agent and a second area (22) not provided with a connecting agent, wherein the first area (21) is covered by the metal layer (203); The first air vent (111) is formed based on the height difference between the thickness of the connector (50) and the surface of the second region (22) on the substrate (20), or the first air vent (111) is formed based on the height difference between the sum of the thickness of the connector (50) and the thickness of the metal layer (203) and the surface of the second region (22) on the substrate (20).

7. The packaging structure according to claim 6, wherein: The first air-permeable structure (110) further comprises a second retaining wall (2032), the second retaining wall (2032) being arranged on a side surface of the substrate (20) facing the housing (10); Wherein, in the extension direction of the first air vent (111) toward the interior of the cavity (101), the second retaining wall (2032) is arranged around the first retaining wall (2031).

8. The packaging structure according to claim 7, wherein: The second retaining wall (2032) is composed of at least one metal layer (203) located on the substrate (20).

9. The packaging structure according to claim 8, wherein: The radial spacing between the second retaining wall (2032) and the first retaining wall (2031) at various positions in the extension direction thereof is equal.

10. The packaging structure according to claim 9, wherein: The first retaining wall (2031) is connected to the metal layer (203) located above the first region (21); and the second retaining wall (2032) is connected to the metal layer (203) located above the first region (21).

11. The packaging structure according to claim 10, wherein: A first groove (2041) is provided between the second retaining wall (2032) and the first retaining wall (2031).

12. The packaging structure according to claim 11, wherein: The bottom of the first groove (2041) is the exposed substrate layer (201).

13. The packaging structure according to claim 9, wherein: A second groove (2042) is provided between the first retaining wall (2031) and the metal layer (203) located above the first region (21); and the second retaining wall (2032) is connected to the metal layer (203) located above the first region (21).

14. The packaging structure according to claim 13, wherein: A first groove (2041) is provided between the second retaining wall (2032) and the first retaining wall (2031); The first groove (2041) is connected to the second groove (2042) to form a third groove (2043).

15. The packaging structure according to claim 14, wherein: The bottom of the third groove (2043) is the exposed substrate layer (201).

16. The packaging structure according to any one of claims 7 to 15, wherein: The first air-permeable structure (110) further comprises a third retaining wall (2033), wherein the third retaining wall (2033) is arranged on a side surface of the substrate (20) facing the housing (10); Wherein, in the extension direction of the first air vent (111) toward the interior of the cavity (101), the third retaining wall (2033) is arranged around the second retaining wall (2032).

17. The packaging structure according to claim 16, wherein: The third retaining wall (2033) is formed by an ink layer (202) located on the substrate (20).

18. The packaging structure according to claim 17, wherein: The radial spacing between the third retaining wall (2033) and the second retaining wall (2032) at various positions in the extension direction thereof is equal.

19. The packaging structure according to claim 18, wherein: A fourth groove is provided between the third retaining wall (2033) and the second retaining wall (2032), and the bottom of the fourth groove is an exposed substrate layer.

20. The package structure according to claim 6, wherein: The first retaining wall (2031) has a first edge portion (2031A) flush with an edge of a side of the first air vent (111) away from the cavity (101); a first groove (2061) and a second groove (2062) recessed toward the interior of the cavity (101) are provided on the first edge portion (2031A); and the first groove (2061) and the second groove (2062) are provided on both sides of the first air vent (111).

21. The package structure according to claim 6, wherein: The cross-section of the first vent hole (111) is in the shape of an elongated strip; The cross-sectional length of the first air vent (111) is 0.02 mm to 0.6 mm, and the cross-sectional width of the first air vent (111) is 0.2 mm to 1.0 mm.

22. The package structure according to claim 21, wherein: The first air permeable structure (110) further comprises a stop block (205), wherein the stop block (205) is arranged on a side surface of the substrate (20) facing the housing (10), and the stop block (205) is passed through the first air permeable hole (111).

23. The package structure according to claim 22, wherein: The stop block (205) is composed of at least one metal layer (203) located on the substrate (20).

24. The package structure according to claim 23, wherein: The radial spacing between the first retaining wall (2031) and the stop block (205) at various positions in the extension direction thereof is equal.

25. The packaging structure according to claim 24, wherein: A fifth groove (2045) is provided between the stopping block (205) and the first retaining wall (2031).

26. The package structure according to claim 25, wherein: The bottom of the fifth groove (2045) is the exposed substrate layer (201).

27. A three-wire microphone structure, characterized in that: The three-wire microphone structure comprises a substrate (70), the substrate (70) having a first surface, and the packaging structure according to any one of claims 1 to 26 is provided on the first surface; At least one lead pad (701) spaced apart from the packaging structure is also provided on the first surface for electrical connection with an external electrical device.

28. An electronic cigarette, characterized in that: The electronic cigarette includes the three-wire microphone structure as claimed in claim 27.

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