Air pipe structure

Abstract

The utility model discloses an air pipe structure which comprises a draught fan, a first air opening of the draught fan is connected with an air pipe, the two ends of the air pipe are open, and a plurality of ventilation holes are evenly distributed in the peripheral wall of the air pipe. When air is exhausted, the cloth pipe of the inflatable castle is arranged on the outer side of the air pipe in a sleeved mode, and the end, away from the inflatable castle, of the cloth pipe is fixed to the end, away from the inflatable castle, of the air pipe. In the state, an exhaust space is formed between the inner wall of the cloth pipe and the outer wall of the air pipe, then under the action of the fan, during exhaust, air in the inflatable castle passes through the interior of the cloth pipe and is output to the outside from the fan, and due to the arrangement of the air pipe, the cloth pipe can be prevented from being folded and blocked due to negative pressure. The multiple vent holes formed in the surface of the air pipe can drive air in the castle to flow outwards as much as possible, so that blockage caused by attachment of the cloth pipe and the air pipe is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust technology for children's inflatable castles, in particular to an air duct structure. Background Art

[0002] Children's inflatable castles are inflatable children's entertainment facilities. They are typically inflated and formed using a blower. However, after children have played with them, the castles need to be deflated before they can be folded and packed. Existing deflation methods rely on natural exhaust or manual squeezing to accelerate the deflation process. Folding and packing are only possible after the air inside the castle is essentially evacuated and flattened. This process wastes considerable time and labor.

[0003] If a blower is directly used to connect the castle for exhaust, when the blower is started, the pipes of the inflatable castle will quickly shrink and become flat under the action of negative pressure, causing the pipes to be blocked and unable to effectively absorb and exhaust the air in the main body of the castle. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an air duct structure that improves exhaust efficiency.

[0005] An air duct structure designed for this purpose includes an air duct connected to a first air outlet, wherein both ends of the air duct are open and a plurality of ventilation holes are evenly distributed on the peripheral wall of the air duct.

[0006] Preferably, one end of the air duct is provided with a plurality of first rotary buckle slots along a circumferential array, and the other end of the air duct is provided with a plurality of first rotary buckle blocks along a circumferential array;

[0007] When two air ducts are used in combination, the first screw buckle slot of one air duct is screwed and matched with the first screw buckle block of the other air duct.

[0008] Preferably, a positioning slot is provided at one end of the air duct provided with the first rotary buckle block, and a positioning plug-in is provided at one end of the air duct provided with the first rotary buckle slot;

[0009] The positioning plug-in is arranged to move forward and backward relative to the air duct;

[0010] When two air ducts are used in combination, the positioning plug-in is movably inserted into the positioning slot to restrict the two connected air ducts from rotating relative to each other.

[0011] Preferably, the air duct is provided with a sliding groove running through inside and outside, the positioning plug-in is provided with a guide member extending through the sliding groove to the inside of the air duct, and the guide member is connected to a limiting member that fits with the inner wall of the air duct.

[0012] Preferably, the air duct is composed of two upper and lower semicircular pipes connected to each other.

[0013] Preferably, a plurality of buckles are arranged on one of the semicircular tubes, and a plurality of slots are arranged on the other semicircular tube, and the buckles are snap-connected with the slots.

[0014] Preferably, the air duct is provided with a plurality of inwardly recessed strip grooves in an array along its circumference, and the ventilation holes are evenly distributed in the strip grooves.

[0015] Compared to the prior art, the present invention includes an air duct connected to a first air outlet, with both ends of the duct open and multiple ventilation holes distributed around the duct's perimeter. In this state, an exhaust space is created between the inner wall of the duct and the outer wall of the duct. Under the action of the fan, air from the interior of the inflatable castle is discharged from the fan through the interior of the duct to the exterior. This arrangement of the duct prevents the duct from collapsing and clogging due to negative pressure. The multiple ventilation holes on the duct's surface maximize outward air flow from the castle, preventing clogging caused by the duct's contact with the duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the combined state of the fan and the air duct;

[0017] Figure 2 The figure is a schematic diagram of the decomposed structure of the air duct;

[0018] Figure 3 This is one of the schematic diagrams of the decomposed structure of two sections of air duct;

[0019] Figure 4 This is the second schematic diagram of the decomposed structure of two sections of air duct;

[0020] Figure 5 This is a schematic diagram of the exploded structure of the fan and air duct;

[0021] Figure 6 Schematic diagram of the cross-sectional structure of the air duct;

[0022] Figure 7 for Figure 6 A in the middle is an enlarged structural diagram;

[0023] Figure 8 This is a schematic diagram of the cross-sectional structure of the air duct and the inflatable castle;

[0024] Figure 9 Schematic diagram of the three-dimensional structure of the air duct. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] See also Figures 1-9A duct structure includes a fan 10, wherein the first air outlet 110 of the fan 10 is connected to the duct 20, the duct 20 is opened at both ends, and a plurality of ventilation holes 210 are evenly distributed on the peripheral wall of the duct 20.

[0027] When blowing and exhausting, the utility model sets the fabric tube 410 of the inflatable castle 40 on the outside of the air duct 20, and fixes the end of the fabric tube 410 away from the inflatable castle 40 to the end of the air duct 20 away from the inflatable castle 40. In this state, there is an exhaust space 50 between the inner wall of the fabric tube 410 and the outer wall of the air duct 20. Then, under the action of the fan, when exhausting, the air inside the inflatable castle is output from the fan to the outside through the interior of the fabric tube. The setting of the air duct can prevent the fabric tube from folding and clogging due to negative pressure. The multiple ventilation holes set on the surface of the air duct can drive the air in the castle to flow outward as much as possible to avoid clogging caused by the fabric tube and the air duct fitting together.

[0028] See also Figure 9 The air duct 20 is provided with a plurality of inwardly recessed strip grooves 280 arranged in an array along its circumference. The ventilation holes 210 are evenly distributed within these strip grooves 280. The strip grooves 280 prevent the pipe 410 from adhering to the air duct 20, thereby preventing the ventilation holes 210 from being blocked and causing airflow obstruction. The inwardly recessed strip grooves 280 allow air to circulate within the strip grooves 280, facilitating air discharge.

[0029] See also Figure 5 The first air outlet 110 of the fan 10 is detachably connected to a connecting cover 30 , and one end of the air duct 20 is detachably connected to the connecting cover 30 .

[0030] Furthermore, the connection cover 30 is provided with a connection ring 310 , and the air duct 20 and the connection ring 310 are connected to each other using a screw-on structure.

[0031] See also Figure 3 and Figure 4 One end of the air duct 20 is provided with a plurality of first rotary lock slots 250 arranged in a circumferential array, and the other end of the air duct 20 is provided with a plurality of first rotary lock blocks 260 arranged in a circumferential array. When two air ducts 20 are used in combination, the first rotary lock slots 250 of one air duct 20 are screwed together with the first rotary lock blocks 260 of the other air duct 20. Due to the screw-lock structure, multiple air ducts 20 can be connected and used according to the required use of the air ducts 20, ensuring that the air ducts 20 can pass through the fabric pipe 410 and extend into the interior of the inflatable castle 40, ensuring smooth exhaust.

[0032] In the present invention, the air duct 20 is gradually tilted downward from one end close to the fan 10 to one end of the inflatable castle 40. This tilt is set to help the air duct 20 close to the inflatable castle 4 end and support it with the ground, so that the whole exhaust device is relatively stable.

[0033] Furthermore, the inclination angle of the air duct 20 is preferably 5°.

[0034] See also Figure 5 The connecting ring 310 is provided with a plurality of second screw-on slots 320 along a circumferential array, and the air duct 20 adopts the first screw-on block 260 to screw-fit with the second screw-on slots 320 .

[0035] See also Figure 7 A positioning slot 270 is provided at one end of the air duct 20 where the first rotary buckle block 260 is provided, and a positioning plug-in 220 is provided at one end of the air duct 20 where the first rotary buckle slot 250 is provided; the positioning plug-in 220 is arranged to move forward and backward relative to the air duct 20; when two air ducts 20 are used in combination, the positioning plug-in 220 is movably inserted into the positioning slot 270 to constrain the relative rotation of the two connected air ducts 20.

[0036] Furthermore, the positioning plug 220 is provided with an inserting portion 221 , which forms a lock when inserted into the positioning slot 270 , so that the two connected air ducts 20 cannot rotate, and the twist-lock connection cannot be unlocked.

[0037] See also Figure 7 The air duct 20 is provided with a sliding groove 230 extending from inside to outside. The positioning plug 220 is provided with a guide member 222 extending through the sliding groove 230 into the interior of the air duct 20. The guide member 222 is connected to a stopper 240 that abuts against the inner wall of the air duct 20. The cooperation between the guide member 222 and the sliding groove 230 can constrain the movement direction of the positioning plug 220, preventing it from moving in other directions. At the same time, under the action of the stopper 240, it constrains the positioning plug 220 to maintain abutment with the air duct 20, preventing the positioning plug 220 from separating from the air duct 20.

[0038] See also Figure 2 The air duct 20 is composed of two upper and lower semicircular pipes 200 connected to each other.

[0039] Furthermore, a plurality of buckles 201 are arranged on one of the semicircular tubes 200 , and a plurality of slots 202 are arranged on the other semicircular tube 200 , and the buckles 201 are snap-connected with the slots 202 .

[0040] The present invention can connect multiple air ducts in sequence according to specific exhaust requirements during exhaust, so that the length of the air duct can extend into the inside of the inflatable castle, effectively increasing the exhaust area of ​​the air duct and achieving rapid exhaust.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An air duct structure, characterized in that: The invention comprises an air duct (20) connected to a first air outlet (110), wherein both ends of the air duct (20) are open, and a plurality of ventilation holes (210) are evenly distributed on the peripheral wall of the air duct (20).

2. The air duct structure according to claim 1, characterized in that: One end of the air duct (20) is provided with a plurality of first rotary buckle slots (250) along a circumferential array, and the other end of the air duct (20) is provided with a plurality of first rotary buckle blocks (260) along a circumferential array; When two air ducts (20) are used in combination, the first screw-lock groove (250) of one air duct (20) is screw-locked with the first screw-lock block (260) of the other air duct (20).

3. The air duct structure according to claim 2, characterized in that: A positioning slot (270) is provided at one end of the air duct (20) provided with the first rotary buckle block (260), and a positioning plug-in unit (220) is provided at one end of the air duct (20) provided with the first rotary buckle slot (250); The positioning plug-in unit (220) is arranged to move forward and backward relative to the air duct (20); When two air ducts (20) are used in combination, the positioning plug-in unit (220) is movably inserted into the positioning slot (270) to constrain the two connected air ducts (20) from rotating relative to each other.

4. The air duct structure according to claim 3, characterized in that: The air duct (20) is provided with a sliding groove (230) that penetrates inside and outside, and the positioning plug-in (220) is provided with a guide member (222) that passes through the sliding groove (230) and extends to the inside of the air duct (20), and the guide member (222) is connected to a limiting member (240) that is in contact with the inner wall of the air duct (20).

5. The air duct structure according to claim 1, characterized in that: The air duct (20) is composed of two upper and lower semicircular pipes (200) connected to each other.

6. The air duct structure according to claim 5, characterized in that: A plurality of buckles (201) are arranged on one of the semicircular tubes (200), and a plurality of slots (202) are arranged on the other semicircular tube (200), wherein the buckles (201) are engaged with the slots (202).

7. The air duct structure according to claim 1, characterized in that: The air duct (20) is provided with a plurality of inwardly recessed strip grooves (280) in an array along its circumference, and the ventilation holes (210) are evenly distributed in the strip grooves (280).

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