Inflation nozzle

Abstract

The utility model discloses an inflation nozzle which comprises a pipe body and an air inlet valve assembly arranged on the upper portion of the pipe body. Wherein the base is provided with a bottom piece and a sleeve part, the lower end of the sleeve part is integrally connected with the bottom piece, the sleeve part is arranged outside the lower end part of the pipe body in a sleeving manner, an annular groove is formed in the lower end part of the pipe body, an inner convex ring is formed on the sleeve part, the inner convex ring is connected with the corresponding annular groove in a matched manner, an air duct is formed in the pipe body, and an air vent is formed in the lower end of the base. The lower ends of the ventilation channels communicate with ventilation holes. The inflation nozzle is beneficial to flexible production and cost reduction.

Description

Technical Field

[0001] This utility model relates to the field of air inflators, specifically to an air inflator nozzle. Background Technology

[0002] Currently, inflatable structures have an inflation chamber. When gas is injected into the inflation chamber, making the internal pressure higher than the external pressure, the inflatable structure expands into a three-dimensional shape. Inflatable structures can be items such as tires, inflatable boats, or swimming rings. Each inflatable structure has an inflation nozzle that connects to the inflation chamber. To ensure a reliable seal between the inflation nozzle and the wall of the inflatable structure, some inflatable nozzles have a base plate at the lower end of the tube. The base plate is attached to the wall of the inflatable structure and welded using ultrasonic welding. For example, the "bicycle inflator" in Chinese Utility Model Patent Publication No. CN219883629U has a TPU base plate and a TPU tube that are integrally formed. When the shape or size of the base plate needs to be changed, the injection mold used to manufacture the tube also needs to be changed, which is not conducive to flexible production and cost reduction. Moreover, when the hardness of the base plate needs to be significantly lower than that of the tube, the manufacturing difficulty is greater. Therefore, it is necessary to improve the existing inflatable nozzle technology. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an air inflator nozzle that facilitates flexible production.

[0004] The objective of this utility model is achieved through the following technical solution.

[0005] This utility model discloses an inflation nozzle, including a tube body and an air inlet valve assembly, wherein the air inlet valve assembly is disposed on the upper part of the tube body; wherein, it also includes a base, the base forming a bottom plate and a sleeve portion, the lower end of the sleeve portion being integrally connected to the bottom plate, the sleeve portion being sleeved outside the lower end of the tube body, the lower end of the tube body forming an annular groove, the sleeve portion forming an inner convex ring, the inner convex ring being adapted to connect to the corresponding annular groove, the tube body forming an air passage, the lower end of the base forming an air vent, and the lower end of the air passage communicating with the air vent.

[0006] Preferably, a support pipe is provided inside the lower end of the tube body, and the vent is connected to the vent hole through the support pipe.

[0007] Preferably, the base has a support plate portion that abuts against the lower side of the support tube, the vent is formed in the support plate portion, and the support plate portion is integrated with the base plate.

[0008] Preferably, the lower end of the ventilator is formed with an inverted step, and the upper end of the support tube is attached to the lower side of the inverted step.

[0009] Preferably, the outer wall of the tube body is flush with the outer wall of the sleeve portion.

[0010] Preferably, the base is a PE base.

[0011] Compared with the prior art, the advantages of this utility model are as follows: by setting a base to form a bottom plate and a sleeve, the lower end of the sleeve is integrally connected to the bottom plate, the sleeve is sleeved on the lower end of the tube body, the lower end of the tube body has an annular groove, and the sleeve has an inner convex ring, which is adapted to connect with the corresponding annular groove, which is conducive to the flexible production of the air nozzle. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the air nozzle of this utility model.

[0013] Figure 2 This is a cross-sectional view of the air nozzle of this utility model.

[0014] Figure 3 for Figure 2 A partial structural diagram at point A.

[0015] Figure 4 This is an exploded view of the air nozzle of this utility model.

[0016] Figure 5 This is a cross-sectional view of the lower end of the tube body of this utility model.

[0017] Labeling: Tube body 1; Annular groove 101; Neck 102; Vent 11; Inverted step 111; Base 2; Bottom plate 21; Sleeve part 22; Inner convex ring 221; Support plate part 23; Vent hole 231; Inlet valve assembly 3; Valve stem 31; Sleeve 32; Valve port sealing ring 33; Fastening nut 34; Support tube 4. Detailed Implementation

[0018] The present invention will now be further described with reference to the accompanying drawings.

[0019] The inflation nozzle of this utility model, such as Figures 1 to 3As shown, the device includes a pipe body 1 and an intake valve assembly 3. The intake valve assembly 3 is located at the upper part of the pipe body 1. Specifically, the intake valve assembly 3 includes a valve stem 31, a sleeve 32, a valve port sealing ring 33, and a locking nut 34. A ventilation channel 11 is formed inside the pipe body 1. The ventilation channel 11 is coaxially arranged with the outer wall of the pipe body 1. The lower part of the sleeve 32 is fixedly located in the upper end of the ventilation channel 11. The valve stem 31 is inserted into the sleeve 32. The locking nut 34 is screwed onto the upper end of the valve stem 31 and is located on the upper side of the sleeve 32. The valve port sealing ring 33 is sleeved on the lower end of the valve stem 31. The valve port sealing ring 33 is located on the lower side of the sleeve 32. The valve stem 31 can move up and down. When the valve port sealing ring 33 is pressed against the lower end face of the sleeve 32, the valve port is closed (that is, the lower end of the sleeve 32 is closed). Since the upper diameter of the valve stem 31 is smaller than the inner diameter of the sleeve 32, when the valve stem 31 and the valve port sealing ring 33 are moved down, the valve port is opened, and the gas can enter the ventilation channel 11 through the gap between the sleeve 32 and the valve stem 31. Since the structural principle of the air intake valve assembly 3 is existing technology and is not the focus of this utility model, it will not be described in detail here.

[0020] like Figures 1 to 3 As shown, the inflation nozzle of this utility model also includes a base 2, which has a bottom plate 21 and a sleeve 22. The lower end of the sleeve 22 is integrally connected to the bottom plate 21. The bottom plate 21 is used to abut against the wall of the inflatable structure. The sleeve 22 is sleeved on the lower end of the tube 1. That is to say, the base 2 and the tube 1 are separate structures. Figure 4 and Figure 5 As shown, an annular groove 101 is formed at the lower end of the tube body 1, such as... Figure 3 As shown, the sleeve portion 22 has an inner convex ring 221, which is adapted to connect with the corresponding annular groove 101. Thus, the annular groove 101 positions the sleeve portion 22 along the axial direction of the tube body 1, preventing the sleeve portion 22 from moving up and down relative to the tube body 1, thereby ensuring a secure connection between the sleeve portion 22 and the tube body 1. Figure 2 and Figure 3 As shown above, a ventilation channel 11 is formed inside the tube body 1. The ventilation channel 11 extends downward through the tube body 1 along its axis. A ventilation hole 231 is formed at the lower end of the base 2. The lower end of the ventilation channel 11 is coaxially connected to the ventilation hole 231. Thus, the gas entering the ventilation channel 11 can be discharged into the inflation chamber of the inflation structure through the ventilation hole 231.

[0021] By separating the base 2 from the tube body 1, when the shape or size of the base plate 21 needs to be changed, the injection mold used to make the tube body 1 can remain unchanged; only the mold used to make the base plate 21 needs to be changed, which facilitates flexible production and reduces costs. When the base plate 21 needs to be relatively soft and elastic, it can be made of materials such as polyethylene or polyvinyl chloride. When the tube body 1 needs to have greater rigidity, it can be made of materials such as ABS or nylon. During the connection of the sleeve 22 to the tube body 1, the sleeve 22 can be first placed over the lower end of the tube body 1, then heated to soften it, and then clamped to ensure a tight fit between the sleeve 22 and the lower end of the tube body 1, forcing the material of the sleeve 22 into the annular groove 101. After the sleeve 22 cools, a stable and sealed connection is formed between the sleeve 22 and the tube body 1. Figure 4 and Figure 5 As shown, the number of annular grooves 101 can be set to two, and the two annular grooves 101 are arranged in the vertical direction.

[0022] Furthermore, such as Figure 2 and Figure 3 As shown, a support tube 4 is provided inside the lower end of the tube body 1. The vent 11 is connected to the vent hole 231 through the support tube 4. Specifically, the inner diameter of the support tube 4 is equal to the inner diameter of the lower end of the vent 11, and the inner diameter of the support tube 4 is also equal to the inner diameter of the vent hole 231. Since the support tube 4 is located inside the lower end of the tube body 1, the sleeve part 22 is located on the corresponding outer side of the support tube 4. As mentioned above, when the sleeve part 22 is clamped, the support tube 4 can radially support the lower end wall of the tube body 1, preventing the lower end of the tube body 1 from collapsing inward. For example, the support tube 4 can be made of metal materials such as copper or steel. Before assembling the base 2, the support tube 4 is first inserted into the lower end of the tube body 1.

[0023] Furthermore, such as Figure 2 and Figure 3 As shown, the base 2 has a support plate 23, which is attached to the lower side of the support tube 4. A vent 231 is formed in the support plate 23. The support plate 23 is integrated with the base plate 21. Thus, the support plate 23 blocks the support tube 4 from moving downward, preventing the support tube 4 from falling off the tube body 1.

[0024] Furthermore, such as Figure 5 As shown, an inverted step 111 is formed at the lower end of the ventilation duct 11, as... Figure 3 As shown, the upper end of the support tube 4 is attached to the lower side of the inverted step 111, so the inverted step 111 prevents the support tube 4 from moving upward, which helps to make the support tube 4 and the tube body 1 stably connected.

[0025] Furthermore, such as Figure 3As shown, the outer wall of the tube body 1 is flush with the outer wall of the sleeve portion 22, meaning that the outer diameter of the sleeve portion 22 is equal to the outer diameter of the tube body 1. This helps to make the outside of the inflation nozzle relatively flat. Specifically, as shown... Figure 5 As shown, a constricted neck 102 is formed between the upper and lower annular grooves 101 of the tube body 1. The outer diameter of the constricted neck 102 is smaller than the outer diameter of the tube body 1. Figure 3 As shown, the sleeve portion 22 covers the neck 102.

[0026] In some embodiments, the base 2 is a PE base, that is, the base 2 is made of polyethylene, which gives the base sheet 21 better soft elasticity. When the inflatable structure is in an inflatable state, the wall of the inflatable structure is curved (e.g., a rubber boat or swimming ring). The softer base sheet 21 can bend (and stretch) accordingly to fit the wall of the inflatable structure, which can avoid damage to the welded structure between the base sheet 21 and the wall of the inflatable structure.

Claims

1. An inflation nozzle, comprising a tube body (1) and an air inlet valve assembly (3), wherein the air inlet valve assembly (3) is disposed on the upper part of the tube body (1), characterized in that: It also includes a base (2), which has a base plate (21) and a sleeve (22). The lower end of the sleeve (22) is integrally connected to the base plate (21). The sleeve (22) is sleeved on the lower end of the tube body (1). The lower end of the tube body (1) has an annular groove (101). The sleeve (22) has an inner convex ring (221). The inner convex ring (221) is adapted to connect with the corresponding annular groove (101). A venting channel (11) is formed inside the tube body (1). A venting hole (231) is formed at the lower end of the base (2). The lower end of the venting channel (11) is connected to the venting hole (231).

2. The inflation nozzle according to claim 1, characterized in that: The lower end of the tube body (1) is provided with a support tube (4), and the air passage (11) is connected to the air hole (231) through the support tube (4).

3. The inflation nozzle according to claim 2, characterized in that: The base (2) has a support plate (23) which is attached to the lower side of the support tube (4). The ventilation hole (231) is formed in the support plate (23). The support plate (23) is integrated with the bottom plate (21).

4. The inflation nozzle according to claim 3, characterized in that: The lower end of the ventilation duct (11) is formed with an inverted step (111), and the upper end of the support tube (4) is attached to the lower side of the inverted step (111).

5. The inflation nozzle according to any one of claims 1 to 4, characterized in that: The outer wall of the tube body (1) is flush with the outer wall of the sleeve part (22).

6. The inflation nozzle according to any one of claims 1 to 4, characterized in that: The base (2) is a PE base.

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