Improved mini bubble blowing device

Abstract

The utility model provides an improved mini-type bubble blowing device which comprises a shell, an air guide piece and a film forming piece capable of being driven by a driving assembly to rotate are fixed on the shell, a plurality of air guide plates are distributed on the air guide piece in an outward radiation mode along the center, the air guide plates are provided with protruding plates in a protruding mode in the direction of the film forming piece, and the protruding plates are arranged on the film forming piece. The protruding plate is rotationally sleeved with the film forming piece, a plurality of film forming rings are arranged on the inner wall of the film forming piece in the circumferential direction of the center of the film forming piece in a protruding and extending mode at intervals, and the width of ring openings of the film forming rings is increased and then decreased or gradually decreased in the direction extending outwards along the center of the film forming piece. A gear ring in transmission connection with the driving assembly is arranged on the outer wall of the film forming piece. According to the bubble blowing device, bubbles can be prevented from being accumulated and wound towards the center through the rotary connection mode of the air guide piece and the film forming piece, the phenomena of bubble sticking, bubble leakage, bubble breaking and the like can be reduced through the arrangement of the ring opening shape of the film forming ring, and then the phenomenon of liquid leakage is not prone to occurring.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of mini bubble blowing device for improvement. BACKGROUND

[0002] The common bubble blowing device on market adopts motor-driven fan blade and transmission mechanism to start, bubble solution is transported to film-forming element, and film-forming bubble solution is blown out to form bubble by fan rotation. Chinese patent CN220824466U provides an improved mini bubble machine transmission structure, impeller and film-forming assembly adopt shaft transmission structure, which can solve the problem of large volume of bubble machine, and the transmission mode of film-forming assembly can be connected to transmission shaft by gear transmission, which changes into center shaft transmission, so as to realize thin film-forming assembly, further reduce space occupancy and reduce the weight of bubble machine. However, the blowing bubble effect of small volume bubble machine (and film-forming assembly) with center shaft transmission is not ideal, and multiple bubble strings are prone to accumulate and wind around the center, and bubble sticking and bubble breaking are also prone to occur, which leads to serious liquid leakage. SUMMARY

[0003] The utility model aims at at least solving one of the technical problems existing in the prior art, and therefore provides an improved mini bubble blowing device.

[0004] In order to achieve the above-mentioned purpose, the utility model provides an improved mini bubble blowing device, which comprises a shell, a film-forming element rotatable driven by a drive assembly is fixed on the shell, a plurality of wind guide plates are arranged outward along the center of the wind guide, a lug plate is protrudingly arranged towards the direction of the film-forming element, the film-forming element is rotatably sleeved on the lug plate, a plurality of film-forming rings are protrudingly arranged on the inner wall of the film-forming element, the ring opening width of the film-forming ring gradually increases and then decreases or gradually decreases in the direction extending outward along the center of the film-forming element, and the outer wall of the film-forming element is provided with a gear ring in transmission connection with the drive assembly.

[0005] As a preferred scheme, the drive assembly comprises a motor, a fan blade fixed on one of the rotating shafts of the motor, and a gear set fixed on the other rotating shaft of the motor, the fan blade is arranged opposite to the wind guide, and the gear set is engaged with the gear ring to drive the film-forming element to rotate.

[0006] As a preferred scheme, the fan blade comprises a center shaft body fixed on the rotating shaft of the motor, five blades are uniformly distributed on the center shaft body in a symmetrical manner, the width of each blade gradually increases outward from the center shaft body, and each blade is connected to the center shaft body at a certain angle in a curved and inclined manner.

[0007] As a preferred solution, the projection of the five blades in the front direction presents a circular shape, the diameter of the circular shape is equal to or slightly smaller than the inner circular diameter of the air guide, each of the blades is formed by a side away from the air guide to another side rounded transition to form a flow arc surface.

[0008] As a preferred solution, the shell is provided with a first installation cavity, a second installation cavity and a third installation cavity which are in communication with each other, the first installation cavity is shaped to be suitable for the motor for fixing the motor, the second installation cavity is shaped to be suitable for the air guide for fixing the air guide and rotatingly connecting the film forming member and the fan blade, the third installation cavity extends from one end of the first installation cavity to the second installation cavity in a figure-eight shape for fixing the gear set.

[0009] As a preferred solution, the gear set is arranged in a shape suitable for the third installation cavity, the gear set includes an output gear, a first transmission gear, a liquid conveying gear, a second transmission gear and a third transmission gear which are sequentially engaged, the output gear is fixed with the rotating shaft of the motor, the liquid conveying gear and the cavity wall of the shell are clamped with a liquid conveying pipe connected to the air guide, the third transmission gear is engaged with the gear ring.

[0010] As a preferred solution, the first transmission gear is composed of two gears with a gear ratio of 3:10, the second transmission gear is composed of two gears with a gear ratio of 2:5, the third transmission gear is composed of two gears fixed by a connecting rod and with a gear ratio of 2:3, the large gear of the first transmission gear is engaged with the output gear and the gear ratio of the two is 10:3, the small gear of the first transmission gear is engaged with the liquid conveying gear and the gear ratio of the two is 1:5, the small gear of the second transmission gear is engaged with the liquid conveying gear and the gear ratio of the two is 1:5, the large gear of the second transmission gear is engaged with the large gear of the third transmission gear and the gear ratio of the two is 5:4, the small gear of the third transmission gear is engaged with the gear ring and the gear ratio of the two is 4:43.

[0011] As a preferred solution, the air guide is further provided with a liquid outlet table between the two air guide plates, the liquid outlet table is provided with a liquid outlet, the liquid outlet is connected to the liquid conveying pipe through a liquid guide pipe, the liquid guide pipe is insertable on the shell and one end thereof is exposed to the shell relative to the direction of the liquid conveying gear.

[0012] As a preferred solution, the convex plate includes a first convex plate and a second convex plate which are arranged at intervals, the first convex plate is provided with a guide plate corresponding to the convex extension of the film forming ring, at least one of the guide plates is provided with a liquid receiving groove, the liquid receiving groove is arranged towards the film forming ring.

[0013] As a preferred solution, the housing comprises a first shell and a second shell which are detachably fixed, a clutch rod is arranged in the first shell relative to the position of the connecting rod of the gear set, the clutch rod comprises a first rod body which is elastically movably arranged on the first shell and a second rod body which is perpendicular to the first rod body, and the second rod body is used for abutting with part of the gear of the gear set.

[0014] Therefore, according to the technical means of the utility model, the utility model can obtain the effects briefly described as follows: the improved mini bubble blowing device provided by the utility model improves the structure of the traditional air guide member and film forming member, the plurality of air guide plates on the air guide member are provided with protruding plates in the direction of the film forming member, so that the film forming member can be rotatably arranged on the protruding plates, and the film forming member can rotate relative to the protruding plates of the air guide member when the film forming member is controlled to rotate by the driving assembly, the centrifugal trend of the bubbles can be increased, and the purpose of avoiding the bubbles from being accumulated and wound to the center can be achieved. Moreover, the inner wall of the film forming member is only provided with a plurality of film forming rings in the circumferential direction, the ring opening width of the film forming ring is first increased and then decreased or gradually reduced in the direction of extending outward from the center of the film forming member, so that in the bubble blowing process, the wind acts on each film forming ring from the center and the edge side of the film forming member to blow out the bubbles, the above-mentioned bubble blowing mode can reduce the phenomena of sticky bubbles, missing bubbles and broken bubbles, and further, the liquid leakage phenomenon is less likely to occur. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the preferred embodiment of the utility model.

[0016] Figure 2 It is a structural schematic view of the preferred embodiment of the utility model. Figure 1 It is an exploded schematic view of the bubble blowing device.

[0017] Figure 3 It is a structural schematic view of the preferred embodiment of the utility model. Figure 2 It is a structural schematic view of the first shell.

[0018] Figure 4 It is a structural schematic view of the preferred embodiment of the utility model. Figure 2 It is a structural schematic view of the fan blade.

[0019] Figure 5 It is a structural schematic view of the preferred embodiment of the utility model. Figure 2 It is an exploded schematic view of the air guide member and the film forming member.

[0020] Figure 6 It is a structural schematic view of the preferred embodiment of the utility model. Figure 1 It is a front view of the fan blade and the air guide member.

[0021] Figure 7 It is a sectional schematic view of the bubble blowing device. Figure 1

[0022] ​In the figure: 1: shell; 11: first shell; 111: clutch rod; 112: first rod body; 113: second rod body; 12: second shell; 100: first installation cavity; 200: second installation cavity; 300: third installation cavity; 2: driving assembly; 21: motor; 22: fan blade; 221: central shaft body; 222: blade; 223: guide arc surface; 23: gear set; 231: output gear; 232: first transmission gear; 233: transmission gear; 234: second transmission gear; 235: third transmission gear; 236: connecting rod; 3: air guide; 31: air guide plate; 311: first convex plate; 312: second convex plate; 313: guide plate; 314: liquid receiving groove; 32: liquid outlet table; 321: liquid outlet; 322: liquid guide pipe; 4: film forming element; 41: film forming ring; 42: gear ring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. It can be understood that the drawings are provided for reference and illustration only, and are not intended to limit the present application. The connections shown in the drawings are only for the convenience of clear description, and do not limit the connection mode.

[0024] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like are based on the directions or positional relationships shown in the drawings to describe the present application, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating that the devices or elements referred to must have a special direction or positional relationship, and therefore cannot be understood as limiting the present application. It should be understood that the terms "first", "second" and the like are only for the convenience of describing the technical solutions of the present application, and are not intended to indicate that the devices or elements referred to must have a special order, and therefore cannot be understood as limiting the present application. It should be noted that when one piece is considered to be "connected" to another piece, it can be directly connected to the other piece or a middle piece can be present at the same time. Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as understood by those skilled in the art of the technical field to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application.

[0025] As Figures 1-7As shown, the embodiment provides an improved mini bubble blowing device, which comprises a shell 1, a driving assembly 2 and a wind guide 3 fixedly arranged in the shell 1, and a film forming member 4 rotatable driven by the driving assembly 2.

[0026] The shell 1 comprises a first shell 11 and a second shell 12 detachably fixed. The first shell 11 and the second shell 12 are provided with a first installation cavity 100, a second installation cavity 200 and a third installation cavity 300 in communication with each other. The first installation cavity 100 is shaped to match the shape of a motor of the driving assembly 2, so as to fix the motor. The second installation cavity 200 is shaped to match the wind guide 3, so as to fix the wind guide 3 and the fan blades of the film forming member 4 and the driving assembly 2. The third installation cavity 300 extends from one end of the first installation cavity 100 to the second installation cavity 200 in a figure-of-seven shape, so as to fix a gear set of the driving assembly 2. It can be understood that the shapes and positions of the first installation cavity 100, the second installation cavity 200 and the third installation cavity 300 are arranged to make the components in the shell 1 relatively compact and reasonable, so as to reduce the overall volume and length of the bubble blowing device and make it applicable to various bubble toys.

[0027] It can be understood that the first shell 11 is provided with a clutch rod 111 relative to the position of a connecting rod of the gear set in the driving assembly 2. The clutch rod 111 comprises a first rod body 112 elastically movably arranged on the first shell 11 and a second rod body 113 perpendicular to the first rod body 112. The second rod body 113 is used to abut one of the gears of the gear set and can engage the gear to another gear to limit the movement of part of the gears of the gear set, so as to ensure the normal work of the gear set. Moreover, since the first rod body 112 is elastically movably arranged on the first shell 11, the second rod body 113 can be elastically connected with the gear set, which can reduce the noise generated during the rotation of the gear set and improve the use stability.

[0028] It should be noted that the shape and structure of the clutch rod 111 can reduce the unqualified rate of the product in the injection molding production process. Compared with the clutch rod structure of the traditional bubble blowing device, the clutch rod structure provided by the embodiment is less likely to have end splitting and other unstable injection molding phenomena in the production process, has strong structural stability, can avoid the injection molding defects of the traditional structure, improve the product qualification rate, and ensure that the product still has excellent noise reduction function after long time use.

[0029] It should be noted that the shell 1 is also provided with a ventilation hole, a wick fixing seat and other conventional structures. Since the conventional structures have been disclosed in the prior art, they will not be described here.

[0030] The driving assembly 2 comprises a motor 21, a fan blade 22 and a gear set 23. In this embodiment, the motor 21 is a double-shaft motor. The fan blade 22 is fixed to one of the rotating shafts of the motor 21 and is used to rotate to generate wind when the motor 21 is started. The gear set 23 is fixed to the other rotating shaft of the motor 21 and is engaged with the film forming member 4, and is used to drive the film forming member 4 to rotate when the motor 21 is started. In other embodiments, the motor 21 can also be a single-shaft motor, and in this case, the fan blade 22 and the gear set 23 are both fixed to the same rotating shaft of the motor 21.

[0031] The fan blade 22 is arranged opposite to the air guide member 3. In this embodiment, the fan blade 22 comprises a central shaft body 221 fixed to the rotating shaft of the motor 21, and the central shaft body 221 is uniformly and symmetrically provided with five blades 222. The width of each blade 222 gradually increases from the central shaft body 221 outwardly (i.e., the width of the blade 222 gradually increases from the root to the outer edge, and the outer edge part is relatively wide), and each blade 222 is connected to the central shaft body 221 at an angle. It can be understood that the five blades 222 are symmetrically and uniformly distributed around the periphery of the central shaft body 221 to ensure that the fan blade 22 can remain balanced when rotating. The shape of each blade 222 is connected to the central shaft body 221 at an angle, which can ensure that each blade 222 can form a three-dimensional structure, which helps to push the gas flow when rotating, forming a wind flow with large and uniform wind force. In other embodiments, the fan blade 22 can also select other number and structure of fan blades according to the wind speed setting requirements.

[0032] In this embodiment, the projection of the five blades 222 in the front view direction presents a circular shape, and the diameter of the circular shape is equal to or slightly smaller than the inner diameter of the air guide member 3. Each blade 222 is formed with a guide arc surface 223 by a circular corner transition from one side away from the air guide member 3 to the other side. It can be understood that the guide arc surface 223 can guide the air when the fan blade 22 rotates, so that the air can more smoothly enter the air guide member 3 along the guide arc surface 223, increase the air intake, and at the same time, weaken the collision effect of the air on the blade 222, which is conducive to reducing noise and saving current loss. In other embodiments, the blade 222 can not be provided with the guide arc surface 223.

[0033] The gear set 23 is arranged in a shape that matches the third mounting cavity 300. In this embodiment, the gear set 23 includes an output gear 231, a first transmission gear 232, a liquid delivery gear 233, a second transmission gear 234, and a third transmission gear 235 that are sequentially engaged. The output gear 231 is fixed to the rotating shaft of the motor 21. It can be understood that the output gear 231 is a worm gear, and the length of the worm gear matches the width of the third mounting cavity 300. The first transmission gear 232 is engaged with the output gear 231 in a vertical manner. The liquid delivery gear 233 is sandwiched between the cavity wall of the housing 1 and a liquid delivery pipe connected to the air guide 3, and is used to squeeze the liquid delivery pipe during rotation, so that the liquid delivery pipe can deliver liquid to the air guide 3. The third transmission gear 235 is engaged with the gear ring of the film forming member 4, and is used to drive the film forming member 4 to rotate.

[0034] It can be understood that the arrangement of the gear set 23 can be adapted to the internal cavity structure of the housing 1, so that the gear set 23, the motor 21, the air guide 3, and the film forming member 4 are more compactly distributed, so as to reduce the volume and length of the housing 1. In other embodiments, the number of gears that are sequentially engaged in the gear set 23 can be changed to four or more than six according to requirements.

[0035] It can be understood that, in order to ensure that the bubble blowing device is small enough in volume and can meet the functional requirements at the same time, the gear ratio of the gear set 23 is set to be able to adapt to the small-diameter film forming member 4. Specifically, the first transmission gear 232 is composed of two gears with a gear ratio of 3:10, the second transmission gear 234 is composed of two gears with a gear ratio of 2:5, and the third transmission gear 235 is composed of two gears with a gear ratio of 2:3 and fixed by a connecting rod 236. Among them, the large gear of the first transmission gear 232 is engaged with the output gear 231, and the gear ratio of the two is 10:3, the small gear of the first transmission gear 232 is engaged with the liquid delivery gear 233, and the gear ratio of the two is 1:5, the small gear of the second transmission gear 234 is engaged with the liquid delivery gear 233, and the gear ratio of the two is 1:5, the large gear of the second transmission gear 234 is engaged with the large gear of the third transmission gear 235, and the gear ratio of the two is 5:4, the small gear of the third transmission gear 235 is engaged with the gear ring of the film forming member 4, and the gear ratio of the two is 4:43. The connecting rod 236 is rotationally connected between the first rod body 112 and the second rod body 113, so that the large gear of the third transmission gear 235 can be connected to the second rod body 113.

[0036] In this embodiment, the number of teeth of the output gear 231 is set to 6, the number of teeth of the large gear in the first transmission gear 232 is set to 20, the number of teeth of the small gear thereof is set to 6, the number of teeth of the transmission gear 233 is set to 30, the number of teeth of the large gear in the second transmission gear 234 is set to 15, the number of teeth of the small gear thereof is set to 6, the number of teeth of the large gear in the third transmission gear 235 is set to 12, the number of teeth of the small gear thereof is set to 8, and the number of teeth of the gear ring in the film forming member 4 is set to 86. The above settings make each meshing gear have a transmission ratio that is more suitable for a small-size shell structure, thereby ensuring that the gear set 23 still has excellent transmission effect when the size of the bubble blowing device is small enough. In other embodiments, the number of teeth of each gear in the gear set 23 can also be set to other values that satisfy the above tooth ratio.

[0037] The air guide member 3 is provided with a plurality of air guide plates 31 radially outward from the center, and the air guide plates 31 are provided with protruding plates protruding towards the direction of the film forming member 4. In this embodiment, the protruding plates include first protruding plates 311 and second protruding plates 312 arranged alternately, and the first protruding plates 311 are provided with guide plates 313 protruding towards the film forming ring of the film forming member 4. At least one of the guide plates 313 is provided with a liquid receiving groove 314, and the liquid receiving groove 314 is arranged towards the film forming ring of the film forming member. It can be understood that the arrangement of the guide plates 313 can achieve better air guiding effect, and the liquid receiving groove 314 can receive a small amount of leaked liquid, and at the same time, the liquid in the liquid receiving groove 314 can be applied to the film forming ring again during the continuous rotation of the film forming member 4, thereby achieving the effect of reducing the leakage of liquid. In other embodiments, the protruding plates can be provided only with the first protruding plates 311 or the second protruding plates 312.

[0038] The air guide member 3 is further provided with a liquid outlet table 32 between two of the air guide plates 31, and the liquid outlet table 32 is provided with a liquid outlet 321, and the liquid outlet 321 is connected to the liquid delivery pipe through a liquid guide pipe 322. The liquid guide pipe 322 can be inserted into the shell 1, and one end of the liquid guide pipe 322 is exposed to the shell 1 relative to the direction of the liquid delivery gear 233. It can be understood that the arrangement of the liquid guide pipe 322 can facilitate the connection of the liquid delivery pipe, and at the same time, the distance between the liquid outlet table 32 and the cavity wall of the shell 1 can be shortened, thereby achieving the effect of saving the length of the liquid delivery pipe.

[0039] The film forming member 4 is rotatably arranged on the protruding plates (i.e. the first protruding plates 311 and the second protruding plates 312), and the inner wall of the film forming member 4 is provided with a plurality of film forming rings 41 protruding towards the center in a circumferential direction, and the ring opening width of the film forming ring 41 first increases and then decreases (or gradually decreases) in the direction extending outward from the center of the film forming member, and the outer wall of the film forming member 4 is provided with a gear ring 42 meshing with the third transmission gear 235.

[0040] It can be understood that the film forming part 4 is sleeved on the protrusion, not only can realize the stable rotation between the film forming part 4 and the air guide part 3, but also can increase the centrifugal trend of the bubbles when the film forming ring 41 rotates to blow out multiple strings of bubbles, so as to avoid the accumulation and winding of the bubbles to the center, and ensure that the bubble blowing device can still have excellent bubble forming effect in the case of small enough volume. By limiting the ring opening shape of the film forming ring 41, the wind can act on each film forming ring 41 from the center and the edge side of the film forming part 4 to blow out bubbles during the blowing process. The above blowing method can reduce the phenomenon of sticky bubbles, missing bubbles, broken bubbles and the like, and further more difficult to appear the phenomenon of liquid leakage.

[0041] In summary, the bubble blowing device provided by the embodiment limits the shape and position distribution of each installation cavity in the shell 1, adjusts the gear ratio between each gear pair in the gear set 23, and can cooperate with the small-diameter film forming part 4 to effectively reduce the overall volume of the bubble blowing device while ensuring stable function, and can shorten the length of the bubble blowing device to 5 cm, so that the bubble blowing device can be applied to smaller toys. Moreover, the structure of the liquid guide pipe 322 and the connection mode thereof with the shell 1 are improved, so that the length of the liquid guide pipe can be shortened and the material can be saved. The structure of the fan blade 22 is also optimized, so that the amount of air blown by the fan blade 22 is larger, the blowing is more labor-saving, and the current loss can be reduced. At the same time, the film forming part 4 without the intermediate shaft is adopted, and by limiting the ring opening shape of the film forming ring 41, the effect of preventing the bubbles from accumulating to the center and preventing the liquid from leaking can be achieved.

[0042] In the specification and claims of the present application, the words "comprise / contain" and the words "have / including" and their variants are used to specify the presence of the stated features, numerical steps or components, but do not exclude the presence or addition of one or more other features, numerical values, steps, components or combinations thereof. For the sake of clarity, some features described in separate embodiments of the present application can be combined for use in a single embodiment. Moreover, various features of the present application described in a single embodiment can also be used separately or in any suitable form in sub-combinations.

Claims

1. An improved miniature bubble blowing device, comprising a housing, wherein an air guide and a film-forming component rotatable by a drive assembly are fixed on the housing, characterized in that, The air guide is provided with multiple air guide plates radiating outward from the center. Each air guide plate has a protruding plate extending towards the film-forming component. The film-forming component is rotatably sleeved on the protruding plate. Multiple film-forming rings are provided on the inner wall of the film-forming component, extending circumferentially towards its center. The width of the opening of the film-forming ring first increases and then decreases or gradually decreases in the direction extending outward from the center of the film-forming component. The outer wall of the film-forming component is provided with a toothed ring that is connected to the drive assembly for transmission.

2. The improved mini bubble blowing device as described in claim 1, characterized in that, The drive assembly includes a motor, a fan blade fixed to one of the motor shafts, and a gear set fixed to the other of the motor shafts. The fan blade is positioned opposite the air guide, and the gear set meshes with the gear ring to drive the film-forming member to rotate.

3. The improved mini bubble blowing device as described in claim 2, characterized in that, The fan blade includes a central shaft fixed to the rotating shaft of the motor. Five blades are evenly distributed symmetrically around the central shaft. The width of each blade gradually increases from the central shaft outwards, and each blade is bent and inclined to the central shaft at a certain angle.

4. The improved miniature bubble blowing device as described in claim 3, characterized in that, The projection of the five blades in the frontal view is a circle, the diameter of which is equal to or slightly smaller than the inner diameter of the air guide. Each blade forms a flow-guiding arc surface by rounding from one side away from the air guide to the other side.

5. The improved miniature bubble blowing device according to any one of claims 2-4, characterized in that, The housing is provided with a first mounting cavity, a second mounting cavity, and a third mounting cavity that are interconnected. The shape of the first mounting cavity is adapted to the motor for fixing the motor. The shape of the second mounting cavity is adapted to the air guide for fixing the air guide and rotatably connecting the film forming component and the fan blade. The third mounting cavity extends from one end of the first mounting cavity in a V-shape to the second mounting cavity for fixing the gear set.

6. The improved miniature bubble blowing device as described in claim 5, characterized in that, The arrangement of the gear set is adapted to the third mounting cavity. The gear set includes an output gear, a first transmission gear, an infusion gear, a second transmission gear, and a third transmission gear that mesh in sequence. The output gear is fixed to the rotating shaft of the motor. An infusion tube connected to the air guide is sandwiched between the infusion gear and the cavity wall of the housing. The third transmission gear meshes with the gear ring.

7. The improved miniature bubble blowing device as described in claim 6, characterized in that, The first transmission gear consists of two gears with a gear ratio of 3:10, the second transmission gear consists of two gears with a gear ratio of 2:5, and the third transmission gear consists of two gears fixed by a connecting rod with a gear ratio of 2:

3. The large gear of the first transmission gear meshes with the output gear with a gear ratio of 10:3, the small gear of the first transmission gear meshes with the infusion gear with a gear ratio of 1:5, the small gear of the second transmission gear meshes with the infusion gear with a gear ratio of 1:5, the large gear of the second transmission gear meshes with the large gear of the third transmission gear with a gear ratio of 5:4, and the small gear of the third transmission gear meshes with the gear ring with a gear ratio of 4:

43.

8. The improved miniature bubble blowing device as described in claim 6, characterized in that, The air guide component is further provided with a liquid outlet platform between the two air guide plates. The liquid outlet platform has a liquid outlet, which is connected to the infusion pipe through a liquid guide tube. The liquid guide tube can be inserted into the outer shell, and one end of it is exposed in the outer shell relative to the direction of the infusion gear.

9. The improved miniature bubble blowing device according to any one of claims 2-4, characterized in that, The convex plate includes a first convex plate and a second convex plate arranged at intervals. The first convex plate is provided with a guide plate protruding from the film-forming ring. At least one of the guide plates is provided with a liquid-receiving groove, which is oriented toward the film-forming ring.

10. The improved miniature bubble blowing device according to any one of claims 2-4, characterized in that, The housing includes a detachable and fixed first housing and a second housing. A clutch lever is provided in the first housing relative to the connecting rod of the gear set. The clutch lever includes a first rod body that is elastically and movably disposed on the first housing and a second rod body that is perpendicular to the first rod body. The second rod body is used to abut against a portion of the gears of the gear set.

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