Diaphragm assembly, airflow sensor and electronic cigarette

Abstract

The utility model discloses a diaphragm assembly, an airflow sensor and an electronic cigarette, which belong to the technical field of airflow sensing and comprise a vibrating ring and a vibrating diaphragm. An insulating layer flush with at least one end face of the vibration ring is arranged on the periphery of the vibration ring in the circumferential direction. The vibrating diaphragm is arranged at one end, flush with the insulating layer, of the vibrating ring; the vibrating diaphragm is fixedly connected with the vibrating ring and the insulating layer. According to the utility model, the structure of the diaphragm assembly is improved, the bonding area of the diaphragm is increased, and the acid tobacco tar erosion resistance of the diaphragm assembly is significantly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air flow sensing, in particular to a diaphragm assembly, an air flow sensor and an electronic cigarette. Background Art

[0002] The air flow sensor is a core component of an electronic cigarette. Its working principle is that the air pressure change caused by the air flow acts on the thin film through a thin film type variable capacitor, thereby generating an electrical signal to control the working state of the circuit. When a person inhales with the mouth containing the atomization device, since the distance between the back plate and the electrode film becomes smaller and the capacitance value becomes larger, the adapted electronic chip collects the signal of the increased capacitance, judges the action of the user inhaling with the mouth containing according to the signal of the increased capacitance, and then turns on the output control, heats and atomizes the e-liquid of the atomizer through the heating wire, and outputs smoke.

[0003] The Chinese invention patent with the application number 201911151351.1 discloses an air flow sensor and an electronic device provided with the air flow sensor, which can effectively detect the air flow in the electronic cigarette, and the vibration film and the vibration ring are bonded by glue. However, with the increasing use of acidic e-liquid in the market, due to the structural limitation of the existing diaphragm, the bonding area is very small, and it is easy to crack under the erosion of acidic e-liquid, resulting in the wrinkling of the vibration film of the diaphragm, and abnormal conditions such as the self-starting and non-working of the electronic cigarette.

[0004] In view of this, it is necessary to provide a new technical solution to solve the above problems. Summary of the Utility Model

[0005] To solve the above technical problems, the present application provides a diaphragm assembly, an air flow sensor and an electronic cigarette, which improve the structure of the diaphragm assembly, increase the contact area between the vibration film and the vibration ring, and significantly improve the anti-erosion ability of the diaphragm assembly to acidic e-liquid.

[0006] A diaphragm assembly includes: a vibration ring and a vibration film. An insulating layer flush with at least one end face thereof is arranged on the outer circumference of the vibration ring; the vibration film is arranged at one end of the vibration ring flush with the insulating layer; the vibration film is fixedly connected to both the vibration ring and the insulating layer.

[0007] Preferably, the insulating layer is fixed on the outer circumference of the vibration ring by dipping or extrusion or spray coating.

[0008] Preferably, the thickness of the insulating layer is not less than the wall thickness of the vibration ring.

[0009] Preferably, the thickness range of the insulating layer is 0.05 - 2.0 mm.

[0010] Preferably, the vibration film is fixedly connected to the vibration ring and the insulating layer by bonding.

[0011] Preferably, the vibration ring is a copper ring.

[0012] According to another aspect of the present application, there is also provided an airflow sensor, comprising a PCB board, a gasket, a pole plate, a housing, and the diaphragm assembly as described above;

[0013] The housing includes a cylindrical housing body and an installation cavity provided in the housing body; an air flow hole communicating with the installation cavity is provided at the end of the housing body;

[0014] An exhaust hole is provided on the PCB board;

[0015] An air inlet hole is provided on the pole plate;

[0016] The PCB board, the diaphragm assembly, the gasket, and the pole plate are fixedly connected to the installation cavity in sequence, and the pole plate is arranged close to the air flow hole;

[0017] The PCB board, the diaphragm assembly, the gasket, and the pole plate enclose a closed space, so that gas can enter the diaphragm assembly through the air inlet hole and can be discharged through the exhaust hole.

[0018] Preferably, the PCB board covers the end of the diaphragm assembly without a vibrating diaphragm; the pole plate covers the end of the diaphragm assembly with a vibrating diaphragm; the gasket is arranged between the end of the diaphragm assembly and the pole plate.

[0019] Preferably, the airflow sensor further includes an oil-proof breathable net covering the outside of the air flow hole; the oil-proof breathable net is fixedly connected to the housing body.

[0020] According to another aspect of the present application, there is also provided an electronic cigarette, characterized in that it includes the airflow sensor as described above.

[0021] Compared with the prior art, the present application has at least the following beneficial effects:

[0022] 1. In the present utility model, an insulating layer is wrapped on the vibration ring, increasing the bonding area of the vibrating diaphragm, and significantly improving the bonding stability of the vibrating diaphragm and the ability of the vibrating diaphragm to resist the erosion and corrosion of acidic e-liquid.

[0023] 2. In the present utility model, an insulating layer is wrapped on the outer layer of the vibration ring in the diaphragm assembly and integrated into a structural component, avoiding the need to set a cavity and a diaphragm in the prior art, not only improving the performance of the airflow sensor itself, but also simplifying its own structure.

[0024] 3. In the utility model, an insulating layer is wrapped around the outer layer of the vibration ring in the diaphragm assembly and integrated into a structural component. After assembly, it can be directly encapsulated and used without considering the assembly dimensions, assembly clearance tolerances, and assembly sequence between the cavity and the diaphragm, significantly improving the assembly efficiency. Description of the Drawings

[0025] Some specific embodiments of the present utility model will be described in detail hereinafter with reference to the accompanying drawings in an exemplary but not restrictive manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0026] In the drawings:

[0027] Figure 1 is a three-dimensional structural schematic diagram of the diaphragm assembly of the present utility model;

[0028] Figure 2 is a cross-sectional structural schematic diagram of the diaphragm assembly of the present utility model;

[0029] Figure 3 is an exploded structural schematic diagram of the airflow sensor of the present utility model;

[0030] Figure 4 is an overall cross-sectional structural schematic diagram of the airflow sensor of the present utility model;

[0031] Figure 5 is a partial structural schematic diagram of the airflow sensor of the present utility model.

[0032] Among them, the above-mentioned drawings include the following reference numerals:

[0033] 10, PCB board; 20, diaphragm assembly; 21, vibration ring; 22, insulating layer; 23, vibrating diaphragm; 30, gasket; 40, electrode plate; 50, housing; 60, oil-proof breathable net; 70, airflow hole; 80, ventilation hole; 90, air inlet hole. Detailed Embodiments

[0034] To make the objectives, technical solutions, and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0035] Embodiment 1

[0036] As Figure 1 and Figure 2As shown in the figure, a diaphragm assembly includes: a vibration ring 21 and a diaphragm 23. Among them, an insulating layer 22 is disposed on the outer circumference of the vibration ring 21 and is flush with at least one end face thereof. The diaphragm 23 is disposed at one end of the vibration ring 21 that is flush with the insulating layer 22; the diaphragm 23 is fixedly connected to both the vibration ring 21 and the insulating layer 22.

[0037] Preferably, the insulating layer 22 is fixedly disposed on the outer circumference of the vibration ring 21 by means of dip molding, extrusion molding, or spray coating.

[0038] Preferably, the thickness of the insulating layer 22 is not less than the wall thickness of the vibration ring 21. When the thickness of the insulating layer 22 is not less than the wall thickness of the vibration ring 21, compared with the prior art, the adhesive contact area of the diaphragm 23 is increased by more than one time, and the bonding is flat, firm, and tight. During the actual operation of the electronic cigarette, the resistance to acidic e-liquid erosion is increased, and the service life of the electronic cigarette can be effectively extended.

[0039] Preferably, the thickness range of the insulating layer 22 is 0.05 - 2.0 mm.

[0040] Preferably, the diaphragm 23 is fixedly connected to the vibration ring 21 and the insulating layer 22 by bonding.

[0041] Preferably, the vibration ring 21 is a copper ring.

[0042] Embodiment 2

[0043] As Figures 3 to 5 shown in the figure, an airflow sensor includes the diaphragm assembly 20 in Embodiment 1, as well as a PCB board 10, a gasket 30, a pole plate 40, and a housing 50. The housing 50 includes a cylindrical housing body and an installation cavity disposed inside the housing body. An airflow hole 70 communicating with the installation cavity is provided at the end of the housing body. An air inlet hole 90 is provided on the PCB board 10. A ventilation hole 80 is provided on the pole plate 40. The PCB board 10, the diaphragm assembly 20, the gasket 30, and the pole plate 40 are sequentially fixedly connected in the installation cavity, and the pole plate 40 is disposed close to the airflow hole 70. The PCB board 10, the diaphragm assembly 20, the gasket 30, and the pole plate 40 enclose a closed space, so that gas can enter the diaphragm assembly 20 through the air inlet hole 90 and can be discharged to the airflow hole 70 through the ventilation hole 80.

[0044] Specifically, the PCB board 10 covers the end of the diaphragm assembly 20 that does not have the diaphragm 23. The pole plate 40 covers the end of the diaphragm assembly 20 that has the diaphragm 23. The gasket 30 is disposed between the end of the diaphragm assembly 20 and the pole plate 40.

[0045] Preferably, the airflow sensor further includes an oil-proof breathable net 60 covering the outside of the airflow hole 70, and the oil-proof breathable net 60 is fixedly connected to the housing body.

[0046] Embodiment 3

[0047] An electronic cigarette, comprising the airflow sensor in Embodiment 2.

[0048] For ease of description, spatial relative terms, such as "above", "over", "on the upper surface", "upper", etc., may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "beneath" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of the features, steps, operations, devices, components, and / or combinations thereof.

[0050] It should be noted that the terms "first", "second", etc. in the description, claims, and drawings of the present application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0051] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A diaphragm assembly, comprising: A vibration ring (21) and a vibration membrane (23), characterized in that an insulating layer (22) is arranged flush with at least one end surface of the vibration ring (21) on its outer circumference; the vibration membrane (23) is arranged at one end of the vibration ring (21) that is flush with the insulation layer (22); and the vibration membrane (23) is fixedly connected to the vibration ring (21) and the insulation layer (22).

2. The diaphragm assembly according to claim 1, characterized in that The insulating layer (22) is fixedly arranged on the outer circumference of the vibration ring (21) by means of dipping, extrusion or spray coating.

3. The diaphragm assembly according to claim 1, characterized in that The thickness of the insulating layer (22) is not less than the wall thickness of the vibration ring (21).

4. The diaphragm assembly according to claim 1 or 3, characterized in that: The thickness of the insulating layer (22) is in the range of 0.05-2.0 mm.

5. The diaphragm assembly according to claim 1, characterized in that: The diaphragm (23) is fixedly connected to the diaphragm ring (21) and the insulating layer (22) by bonding.

6. The diaphragm assembly according to any one of claims 1 to 5, characterized in that: The vibration ring (21) is a copper ring.

7. An airflow sensor, comprising a PCB board (10), a gasket (30), an electrode plate (40), and a housing (50), characterized in that: Also includes the diaphragm assembly (20) according to any one of claims 1 to 6; The outer shell (50) comprises a cylindrical outer shell and a mounting cavity arranged in the outer shell; an air flow hole (70) communicating with the mounting cavity is arranged at the end of the outer shell; The PCB board (10) is provided with an air inlet hole (90); The electrode plate (40) is provided with a vent hole (80); The PCB board (10), the diaphragm assembly (20), the gasket (30) and the electrode plate (40) are fixedly connected in sequence in the installation cavity, and the electrode plate (40) is arranged close to the air flow hole (70); The PCB board (10), the diaphragm assembly (20), the gasket (30) and the electrode plate (40) enclose a closed space, so that gas can enter the diaphragm assembly (20) through the vent hole (80) and can be discharged through the air inlet hole (90).

8. The airflow sensor according to claim 7, characterized in that: The PCB board (10) is covered on the end of the diaphragm assembly (20) without a diaphragm (23); the electrode plate (40) is covered on the end of the diaphragm assembly (20) with a diaphragm (23); and the gasket (30) is arranged between the end of the diaphragm assembly (20) and the electrode plate (40).

9. The airflow sensor according to claim 7, characterized in that: The airflow sensor further comprises an oil-proof and air-permeable net (60) covering the outside of the airflow hole (70); the oil-proof and air-permeable net (60) is fixedly connected to the outer shell.

10. An electronic cigarette, characterized in that: An airflow sensor comprising any one of claims 7 to 9.

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