Cylindrical Chair & Office Chair

The cylindrical component in cylindrical office chairs typically refers to the gas lift, while in some irregularly shaped booth cylindrical sofa-style office chairs, the cylindrical structure involves the frame or filling support components. The following provides an overview of the structures, functions, and purchasing considerations for these two types of products:

Cylindrical Component in Regular Office Chairs: Gas Lift

The core cylindrical component in regular office chairs is the gas lift, also known as a gas spring or gas rod, which serves as the crucial connection between the base and the seat cushion. Its operating principle is based on high-pressure nitrogen gas sealed within a cylinder, with a piston dividing the cylinder space into upper and lower chambers. When the height adjustment lever is operated, the piston valve opens, allowing the high-pressure nitrogen gas to push the piston, generating thrust due to the difference in the受力面积 (force-bearing area) on both sides of the piston, enabling stepless adjustment of the seat height. During the lifting and lowering process, the compression and release of nitrogen gas form a cycle, ensuring smooth adjustment and repeatable use.

Cylindrical Structure in Irregularly Shaped Booth Cylindrical Sofa-Style Office Chairs

Some office chairs that incorporate sofa functions adopt an irregularly shaped booth design, and their cylindrical structures may involve two types of components:

1. Frame Support: Some products feature cylindrical frames made of solid wood or metal, serving as the foundational support for the overall seat structure to ensure stability.
2. Filling Support: High-density foam-filled cylindrical backrests or seat cushions are designed with an arc shape to conform to the body's curves, enhancing comfort. The upholstery for such products often uses microfiber leather or fabric, balancing durability and breathability, making them suitable for conference areas or rest zones. Some high-end models support customization in terms of size and material, with price ranges spanning from several hundred to several thousand yuan.

Purchasing and Usage Considerations

1. Gas Lift Quality Identification:

   • Check the stamp markings to confirm the safety rating (prioritize Grade 3 or 4, which offer stronger load-bearing capacity);
   • Lightly tap the outer tube of the gas lift; a low-pitched sound indicates high-quality steel, while a清脆 (crisp) sound suggests inferior quality;
   • Prefer products from reputable brands that have passed international certifications such as SGS and BIFMA.

2. Daily Usage Guidelines:

   • Avoid violently impacting the gas lift (e.g., sitting down forcefully or striking it with a hard object) to prevent damage to the seal ring, which could cause gas leakage;
   • Do not overload the chair (the typical load limit is 100-120 kg) to avoid deformation or explosion risks to the gas lift;
   • Regularly check if the seat height adjustment is smooth; if gas leakage, abnormal wobbling, or sinking occurs, immediately stop using the chair and replace the gas lift.

3. Maintenance of Irregularly Shaped Booth Office Chairs:

   • Regularly clean the upholstery to prevent liquid from seeping into the high-density foam, which could lead to mold growth;
   • Check for looseness at the connections of solid wood frames and apply rust prevention treatment to metal frames.