Air pump device

Abstract

An air pump device comprises a bottom shell and a driving assembly arranged in the bottom shell, the driving assembly comprises a protruding block, an annular side wall is formed on the side wall of the protruding block, an elastic bowl and a rocker arm connected with the elastic bowl are arranged in the annular side wall, and a magnetic block is arranged on the rocker arm; a shaft hole is formed in one end of the protruding block, a shaft sleeve is arranged in the shaft hole, a rotating shaft is arranged in the shaft sleeve, and the upper end and the lower end of the rotating shaft are movably connected with the rocker arm. The air pump device is simple in structure, long in service life and low in operation noise.

Description

Technical Field

[0001] This utility model relates to the field of air pump structure technology, and specifically to an air pump device. Background Technology

[0002] With the development of the times and the progress of technology, people's consumption levels and living standards have been greatly improved. In order to meet the need for fresh air, people use air fresheners indoors.

[0003] Aroma diffusers, as a common electrical appliance, primarily function by using atomization technology to transform essential oils into tiny particles, which are then evenly dispersed into the air to create a pleasant fragrance environment, enhancing the comfort and atmosphere of living or working spaces. Aroma diffusers not only improve air quality but can also regulate people's emotions through different fragrance formulas, promoting relaxation or mental alertness.

[0004] Fragrance diffusers are equipped with an air pump to generate high-pressure, high-speed gas. This gas disperses liquefied essential oils, atomizing them into microparticles. The air pump typically contains a rocker arm. When powered on, a silicon steel sheet and corresponding coil inside the air pump generate a strong magnetic field, causing a magnet to vibrate. This magnet, connected to the rocker arm, also vibrates. During this process, the rocker arm causes a diaphragm to reciprocate, drawing in external gas, compressing it, and expelling it from the outlet, ultimately creating high-pressure, high-speed gas.

[0005] In existing air pumps, the rocker arm is directly connected to the shaft hole in the base of the air pump via a rotating shaft. As the number of vibrations increases, the rotational clearance between the rocker arm and the shaft hole of the base increases, resulting in a lot of noise when the air pump is working, and wear reduces the life of the air pump.

[0006] Therefore, it is practically necessary for the industry to provide an air pump device to overcome the shortcomings of the prior art. Utility Model Content

[0007] The purpose of this invention is to solve the above-mentioned problems and provide an air pump device.

[0008] To achieve the objectives of this utility model, the following technical solution is adopted:

[0009] An air pump device includes: a base shell and a drive assembly disposed within the base shell. The drive assembly includes: a protrusion, an annular sidewall formed on the sidewall of the protrusion, an elastic cup disposed within the annular sidewall and a rocker arm connected to the elastic cup, and a magnet disposed on the rocker arm; a shaft hole is opened at one end of the protrusion, a bushing is disposed within the shaft hole, a rotating shaft is disposed within the bushing, and the upper and lower ends of the rotating shaft are movably connected to the rocker arm.

[0010] Preferably, a pivot hole is formed on the side, and the upper and lower ends of the rotating shaft are inserted into the pivot hole. The outer diameter of the top of the rotating shaft is larger than the outer diameter of the bottom, and the top of the rotating shaft is engaged with the upper end of the shaft hole. More preferably, the end of the elastic cup away from the annular sidewall forms a protruding post facing outward, and the rocker arm and the elastic cup are fixed together by means of a screw passing through the rocker arm and locking to the protruding post.

[0011] More preferably, the drive assembly includes a base, a drive unit disposed on one side of the base, and an air passage unit disposed on the other side of the base and driven by the drive unit; the air passage unit includes the protrusion disposed on the other side of the base.

[0012] Preferably, an air cavity is formed on the protrusion, and an air inlet communicating with the air cavity is opened in the annular sidewall. More preferably, an air inlet hole is opened on one side of the bottom shell, and an air inlet communicating with the air inlet hole is opened on the base, and the air inlet is also communicating with the air inlet.

[0013] Preferably, a first gas path is formed on the other side of the bottom shell; a second gas path is formed on the base at a position corresponding to the first gas path; and an outlet pipe connected to the second gas path is also provided on the base.

[0014] Preferably, the second gas path has an upstream window at one end and a downstream window at the other end; the upstream window communicates with the gas chamber and the downstream window communicates with the gas outlet pipe.

[0015] Preferably, the driving unit includes a silicon steel sheet disposed on one side of the base and coils intersectingly disposed within the silicon steel sheet.

[0016] Preferably, it also includes a top cover that seals with the bottom housing to seal the drive assembly therein.

[0017] More preferably, a filter element is provided on the bottom wall of the bottom shell away from the drive assembly; the filter element covers the air inlet to filter the air entering the drive assembly from the outside through the air inlet and / or prevent essential oil from entering the air inlet.

[0018] Furthermore, a stepped hole can be formed on the bottom wall, and the stepped surface of the stepped hole is connected to the air inlet; the filter element is disposed in the stepped hole.

[0019] Optionally, a set of turbulence columns are provided on the second gas path to reduce the speed and noise of the gas entering the second gas path.

[0020] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0021] In this invention, by using a bushing made of wear-resistant material, the wear generated during rotation is greatly reduced, making it less likely for gaps to form and ultimately eliminating rotational noise. Furthermore, the rocker arm pivot hole only rotatably connects to the upper and lower ends of the shaft, while the rest of the shaft does not contact it, thus reducing the wear area and weakening wear.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0024] Figure 1 This is a three-dimensional structural diagram of the air pump device of this utility model.

[0025] Figure 2 This is an exploded three-dimensional view of the air pump device of this utility model.

[0026] Figure 3 This is a further exploded perspective view of the air pump device of this utility model.

[0027] Figure 4 This is a three-dimensional structural diagram of the base of the air pump device of this utility model.

[0028] Figure 5 This is an exploded perspective view of the air pump device of this utility model from another angle. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model and should not be construed as limiting this utility model.

[0030] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the term “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, and / or components, nor does it exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connection or wireless coupling. The term “and / or” as used herein includes all or any unit and all combinations of one or more associated listed items.

[0031] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0032] In one embodiment of this utility model, reference is made to Figure 1-5 An air pump device 100 is provided, comprising: a base 10, a drive assembly 20 disposed within the base 10, and a top cover 30 that is sealed and fastened to the base 10 to seal the drive assembly 20 therein.

[0033] The bottom shell 10 and the top cover 30 together form a receiving space, and the drive assembly 20 is located within the receiving space.

[0034] An air inlet 12 is provided on one side of the bottom shell 10, extending vertically, for example in... Figure 3 In the illustrated embodiment, multiple air inlets 12, such as three, are provided on the right side of the bottom shell 10. The more air inlets 12 there are, the more air enters the bottom shell 10 from the bottom and then into the drive assembly 20, and the faster the air intake speed. However, too many air inlets will result in an excessively large opening area on the bottom shell 10, affecting its structural stability.

[0035] On the other side of the bottom shell 10, a first gas path 1454 is formed. The first gas path 1454 can be formed by multiple interconnected flanges, and the gas flows in a certain direction along the gaps formed between these flanges.

[0036] The drive assembly 20 is disposed inside the bottom shell 10 and includes: a base 22, a drive unit 24 disposed on one side of the base 22, and an air passage unit 29 disposed on the other side of the base 22 and driven by the drive unit 24.

[0037] An air inlet is provided on the base 22, for example, in Figure 4 In the illustrated embodiment, the base 22 has three air inlets: a first air inlet 222 and two second air inlets 2222, arranged in a triangular pattern to allow for uniform gas intake from the outside. Furthermore, a second gas path 224 is formed on the base 22 at a position corresponding to the first gas path 1454. Similarly, the second gas path 224 can also be formed by multiple interconnected flanges, with gas flowing in a specific direction along the gaps between these flanges. When the bottom shell 10 and the base 22 are assembled, the flanges corresponding to the two gas paths overlap tightly, forming a sealed gas channel through the aforementioned gaps. Additionally, the base 22 is also provided with an air outlet 226 that communicates with the second gas path 224.

[0038] The drive unit 24 includes a silicon steel sheet 242 disposed on one side of the base 22 and coils 244 intersectingly disposed within the silicon steel sheet 242.

[0039] The air passage unit 29 includes a protrusion 26 disposed on the other side of the base 22. An air cavity 262 is formed on the protrusion 26, and an annular sidewall 264 is formed on the sidewall of the protrusion 26. An air inlet 2642 communicating with the air cavity 262 is opened within the annular sidewall 264, and the air inlet 2642 is simultaneously communicating with the air inlet and the air inlet hole 12. An elastic cup 28 and a rocker arm 21 connected to the elastic cup 28 are disposed within the annular sidewall 264. A magnet 23 is disposed on the rocker arm 21. A shaft hole 266 is opened at the end of the protrusion 26 away from the drive unit 24. A bushing 25 is disposed within the shaft hole 266, and a rotating shaft 2323 is disposed within the bushing 25. The upper and lower ends of the rotating shaft 2323 are rotatably connected to the rocker arm 21. In this embodiment, the shaft hole 266 is a closed or closed structure, thus the contact area between it and the bushing 25 is larger, resulting in greater wear resistance and extending the service life of the parts. The shaft holes in existing technologies are open or semi-closed structures, meaning there are notches in the shaft holes, which makes them not wear-resistant and have a short service life.

[0040] The second gas path 224 has an upstream window 2242 at one end and an upstream window 2242 at the other end.

[0041] A downstream window 2244 at one end; the upstream window 2242 is connected to the air chamber 262, and the downstream window 2244 is connected to the air outlet pipe 226.

[0042] In the above embodiment, external air entering the space between the bottom shell 10 and the base 22 through the air inlet 12 of the bottom shell 10 first enters the upper space of the base 22 (the space formed by the upper surface of the base 22 and the top cover 30) through the first air inlet 222 opened at the bottom of the base 22. The gas then enters the internal space between the base 22 and the bottom shell 10 through the second air inlet 2222 opened at the bottom of the base 22. Then, it enters the interior of the elastic cup 28 through the sealed air passage of this internal space. When the drive component 20 is energized, a strong changing magnetic field is generated around the silicon steel sheet 242 according to the principle of magnetoelectric conversion. Through the interaction between this magnetic field and the magnetic block 23, the magnetic block 23 swings rapidly back and forth laterally. This swinging causes the rocker arm 21, which is fixed to it, to swing around the rotating shaft 2323. Since the rocker arm 21 is fixedly connected to the elastic cup 28, the elastic cup 28 undergoes reciprocating elastic deformation within the annular sidewall 264. Because a one-way inlet valve (not shown) is provided at the air inlet 2642, the elastic bowl 28 pushes the gas entering its interior into the air chamber 262. As the elastic bowl 28 continues to reciprocate, the gas volume pumped into the air chamber 262 increases. When the internal air pressure reaches a certain level, the gas pushes open the one-way inlet valve (not shown) located at the bottom of the air chamber 262 and enters the upstream window 2242. Then the gas enters the gas channel jointly defined by the first gas path 1454 and the second gas path 224, and travels along the gas channel to the downstream window 2244, and finally is discharged from the outlet pipe 226.

[0043] During the operation of the air pump device, the rocker arm 21 continuously reciprocates, thus posing a severe test to the rotating connection parts of the rocker arm 21. In other words, the rotating connection parts must possess sufficient wear resistance. In existing technology, the rocker arm is directly rotatably connected to a suitable structure on the base via a rotating shaft. With increasing operation frequency, the inner diameter of the shaft hole on the base increases, or the outer diameter of the rotating shaft decreases, resulting in a large movement gap at the rotating connection parts. Excessive movement gap leads to significant noise pollution during air pump operation, resulting in a poor user experience for the fragrance diffuser and causing significant noise pollution for the user.

[0044] In contrast, the technical solution provided by this utility model, by setting a bushing made of wear-resistant material for the intermediate component, greatly reduces the wear generated during rotation, thus making it less likely to form gaps and ultimately preventing rotational noise. Furthermore, the rocker arm pivot hole only rotatably connects to the upper and lower ends of the rotating shaft, while the other parts do not contact it, thereby reducing the wear area to some extent and weakening wear.

[0045] Preferably, pivot holes 212 are formed on the upper and lower sides of the left end of the rocker arm 21, and the upper and lower ends of the rotating shaft 2323 are inserted into the pivot holes 212, thereby realizing the reciprocating rotation of the rocker arm 21 around the rotating shaft 2323.

[0046] Preferably, the end of the elastic bowl 28 away from the annular sidewall 264 forms a protruding post 282, and the rocker arm 21 is fixed to the elastic bowl 28 by means of a screw passing through the rocker arm 21 and locking to the protruding post 282.

[0047] Preferably, the magnetic block 23 is located between the rocker arm 21 and the drive assembly 20. Since the magnetic block 23 is close to the drive unit 24, the magnetic force exerted by the drive unit 24 on the magnetic block 23 is stronger, which makes the reciprocating swing speed and frequency of the elastic bowl 28 faster, thereby improving the operating speed of the air pump device and improving its working efficiency.

[0048] Preferably, the top of the air chamber 262 is sealed by means of a sealing cover 27, thereby ensuring that the top of the entire air chamber 262 is sealed, so that gas entering from the outside can only flow along a predetermined path inside the air chamber 262.

[0049] In order to filter the external air entering the space between the bottom shell 10 and the base 22 through the air inlet 12 of the bottom shell 10, and to prevent large solid particulate impurities (or essential oil particles) from entering the interior and causing damage to the silicon steel sheet 242 of the drive unit 24 and the coils 244 intersecting within the silicon steel sheet 242 and their corresponding physical structures, thereby shortening the overall lifespan of the various components of the drive assembly 20, this utility model can filter the external air, which is specifically achieved through the following structure:

[0050] A filter element 40 may be provided on the bottom wall 14 of the drive assembly 20, so that the filter element 40 covers the air inlet 12 to filter the air entering the drive assembly 20 from the outside through the air inlet 12 and / or prevent essential oil from entering the air inlet 12.

[0051] Here, the filter element 40 can be any suitable type of structure, such as an airtight sponge, and can have a certain thickness to achieve deep air filtration and obtain better air removal effect. Furthermore, the filter element 40 can have any suitable shape, such as a cylindrical structure, to facilitate its assembly. The filter element 40 can be fixed to the bottom wall 14 in any suitable way, such as by double-sided tape, or by a tight fit at a suitable position on the bottom wall 14. For example, a stepped hole 142 can be formed in the bottom wall 14, with the stepped surface 1422 communicating with the air inlet 12; then the filter element 40 is tightly fitted into the stepped hole 142. This installation method facilitates the easy removal of the filter element 40 from the bottom wall 14 for replacement.

[0052] As described in the above embodiments, the gas volume in the pumped gas chamber 262 gradually increases. When the internal gas pressure reaches a certain level, the gas pushes open the one-way inlet valve plate located at the bottom of the gas chamber 262 and enters the upstream window 2242. Then, the gas enters the gas channel jointly defined by the first gas path 1454 and the second gas path 224, and meanders along the gas channel to the downstream window 2244, finally being discharged from the outlet pipe 226. During this process, the gas not only has high pressure but also high flow rate. Therefore, when it flows through the gas channel jointly defined by the first gas path 1454 and the second gas path 224, it will generate a harsh noise. In order to reduce this noise and provide users with a quieter user experience, this utility model sets a set of turbulence columns 22442 on the second gas path 224. These turbulence columns 22442 are distributed at a certain distance from each other on the second gas path 224. When the high-speed gas collides with these turbulence columns, it can reduce the gas flow rate, thereby achieving the effect of speed reduction and noise reduction.

[0053] Those skilled in the art will understand that the steps, measures, and solutions in the various operations, methods, and processes discussed in this application can be alternated, modified, combined, or deleted. Furthermore, other steps, measures, and solutions in the various operations, methods, and processes discussed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and solutions in the prior art that are similar to those disclosed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted.

[0054] The above description is only a partial embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An air pump device, comprising: A bottom shell and a drive assembly disposed within the bottom shell, the drive assembly comprising: a protrusion, an annular sidewall formed on the sidewall of the protrusion, an elastic cup disposed within the annular sidewall and a rocker arm connected to the elastic cup, and a magnetic block disposed on the rocker arm; characterized in that: a shaft hole is opened at one end of the protrusion, a bushing is disposed within the shaft hole, a rotating shaft is disposed within the bushing, and the upper and lower ends of the rotating shaft are movably connected to the rocker arm.

2. The air pump device according to claim 1, characterized in that: The left end of the rocker arm has pivot holes on both the upper and lower sides. The upper and lower ends of the rotating shaft are inserted into the pivot holes, and the outer diameter of the top of the rotating shaft is larger than the outer diameter of the bottom. The top of the rotating shaft is locked in the upper end of the shaft hole.

3. The air pump device according to claim 2, characterized in that: The end of the elastic cup away from the annular sidewall forms a protruding post, and the rocker arm is fixed to the elastic cup by means of a screw passing through the rocker arm and locking to the protruding post; the drive assembly includes a base, a drive unit disposed on one side of the base, and an air passage unit disposed on the other side of the base and driven by the drive unit; the air passage unit includes the protrusion disposed on the other side of the base.

4. The air pump device according to claim 3, characterized in that: An air cavity is formed on the protrusion, and an air inlet communicating with the air cavity is opened in the annular sidewall; an air inlet hole is opened on one side of the bottom shell, which runs vertically through the bottom; an air inlet hole is opened on the base, which communicates with the air inlet hole, and the air inlet hole is also communicating with the air inlet.

5. The air pump device according to claim 4, characterized in that: A first gas path is formed on the other side of the bottom shell; a second gas path is formed on the base at a position corresponding to the first gas path; the base is also provided with an outlet pipe that communicates with the second gas path; the second gas path has an upstream window at one end and a downstream window at the other end; the upstream window communicates with the gas cavity, and the downstream window communicates with the outlet pipe.

6. The air pump device according to claim 3, characterized in that: The drive unit includes a silicon steel sheet disposed on one side of the base and coils arranged crosswise within the silicon steel sheet.

7. The air pump device according to claim 1, characterized in that: It also includes a top cover that seals and engages with the bottom housing to seal the drive assembly inside.

8. The air pump device according to claim 4, characterized in that: A filter element is provided on the bottom wall of the bottom shell away from the drive assembly; the filter element covers the air inlet to filter the air entering the drive assembly from the outside through the air inlet and / or prevent essential oil from entering the air inlet.

9. The air pump device according to claim 8, characterized in that: A stepped hole is formed on the bottom wall, and the stepped surface of the stepped hole is connected to the air inlet; the filter element is disposed in the stepped hole.

10. The air pump device according to claim 5, characterized in that: A set of turbulence columns is set on the second gas path to reduce the speed and noise of the gas entering the second gas path.

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