Combined air core

Abstract

This invention is a modular air core comprising an upper sleeve, a lower sleeve, a core rod, and an elastic element. The lower sleeve is detachably mounted at the bottom of the upper sleeve. The core rod passes through the inflation channel inside the upper and lower sleeves. The core rod includes an extension section, abutment section, and airtight section. The abutment section is formed at the top of the extension section, and the airtight section is formed at the bottom of the extension section. The elastic element is fitted onto the extension section of the core rod and abuts against the abutment section and the lower sleeve. This modular air core uses a detachable upper and lower sleeve structure, and the elastic element drives the core rod to automatically reset to maintain an airtight state. This effectively reduces the assembly difficulty of the modular air core and improves its ease of use. Furthermore, the upper sleeve can be connected to air nozzle connectors of different specifications to be suitable for various inflation devices, thereby improving the versatility of the modular air core.

Claims

1. A combined air core, comprising: an upper sleeve having an axially penetrating upper channel formed therein; a lower sleeve having a connecting portion and an airtight portion, wherein the connecting portion of the lower sleeve is detachably connected to the bottom of the upper sleeve, the airtight portion is formed at the bottom end of the connecting portion, the lower sleeve having an axially penetrating lower channel formed inside, the lower channel and the upper channel being interconnected to form an inflation channel, and the lower sleeve having a limiting flange inside the lower channel; A core rod is inserted into the inflation channel inside the upper and lower sleeves. The core rod includes an extension section, a stop section, and an airtight section. The stop section is formed at the top of the extension section, and the width of the stop section is greater than the width of the extension section. The airtight section is formed at the bottom of the extension section. An elastic member is sleeved on the extension section of the core rod. The two opposite ends of the elastic member can respectively abut against the limiting flange of the lower sleeve and the stop section of the core rod. The elastic member can push the core rod so that the airtight section of the core rod can abut against the airtight part of the lower sleeve to seal the inflation channel.

2. The combined air core as described in claim 1, wherein the upper sleeve includes a connecting section and a mating section, the mating section being formed at the bottom of the connecting section and capable of mating with the assembly portion of the lower sleeve.

3. The combined air core as described in claim 1, wherein the assembly portion of the lower sleeve includes a set section and an assembly section, the set section being able to be assembled with the upper sleeve, the assembly section being formed at the bottom of the set section, and the airtight portion being connected to the bottom of the assembly section.

4. The combined air core as described in claim 2, wherein the assembly portion of the lower sleeve includes a set section and an assembly section, the set section being able to be assembled with the mating section of the upper sleeve, the assembly section being formed at the bottom of the set section, and the airtight portion being connected to the bottom of the assembly section.

5. The combined air core as described in any one of claims 1 to 4, wherein the airtight portion of the lower sleeve includes an outer annular groove and an airtight outer ring, the airtight outer ring being fitted within the outer annular groove.

6. The combined air core as described in any one of claims 1 to 4, wherein the airtight section of the core rod has a positioning flange and a stop flange spaced apart, and an airtight inner ring disposed between the positioning flange and the stop flange, the airtight inner ring being able to abut against the bottom end of the airtight portion of the lower sleeve and close the inflation channel.

7. The combined air core as described in claim 5, wherein the airtight section of the core rod has a positioning flange and a stop flange spaced apart, and an airtight inner ring disposed between the positioning flange and the stop flange, the airtight inner ring being able to abut against the bottom end of the airtight portion of the lower sleeve and close the inflation channel.

8. The combined air core as described in any one of claims 1 to 4, wherein the upper sleeve protrudes inside the upper channel to form an abutting flange, and the abutting section of the core rod abuts against the abutting flange.

9. The combined air core as described in claim 5, wherein the upper sleeve protrudes inside the upper channel to form an abutting flange, and the abutting section of the core rod abuts against the abutting flange.

10. The combined air core as described in claim 6, wherein the upper sleeve protrudes inside the upper channel to form an abutting flange, and the abutting section of the core rod abuts against the abutting flange.

11. The combined air core as described in any one of claims 1 to 4, wherein the combined air core includes an air nozzle connector, the air nozzle connector having an internal air nozzle channel, the air nozzle connector being detachably disposed in the connecting section of the upper sleeve, and the air nozzle channel inside the air nozzle connector communicating with the inflation channel.

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