Office Chair Tray Structure

The structure of an office chair tray encompasses various designs, with common structural features as follows:

A common office chair tray structure primarily consists of a circular positioning plate and an installation plate. The positioning plate is rotatably mounted on top of the installation plate, with a detachable connection between them, facilitating subsequent maintenance and replacement. Below the installation plate, a connecting component and a cylinder are sequentially arranged. The telescopic end of the cylinder extends vertically upward through the connecting component, and the connection between the connecting component and the telescopic end of the cylinder is also detachable. This design enables the cylinder to provide lifting functionality for the tray, meeting the needs of different users for seat height.

There are two common forms of rotational connection between the positioning plate and the installation plate. First, a circular through-tube is fixedly attached to the bottom of the positioning plate, and a rotational groove is formed along the circumference of the top of the installation plate. The through-tube is inserted into the rotational groove and can rotate relative to it. To reduce friction during rotation, multiple ball bearings may be provided at the bottom of the through-tube, which roll within the rotational groove as the through-tube rotates, making the rotation smoother. Second, a vertical shaft is fixedly attached to the bottom of the positioning plate, and an installation hole is formed through the installation plate. The shaft is rotatably inserted into the installation hole, achieving rotational connection between the positioning plate and the installation plate.

Another type of seat tray structure includes components such as a base, a large plate, a flip cover, and a support seat. A third pin is fixed at the end of the support seat away from the large plate, and an activity hole is formed in the flip cover for the third pin to pass through, allowing the flip cover to rotate at a certain angle relative to the support seat. A regulating seat is fixed at the bottom of the support seat, with at least two gear slots formed on the side of the regulating seat close to the base. A regulating rod is rotatably connected to the base, and the regulating rod is connected to a locking plate through a connecting mechanism. By rotating the regulating rod, the locking plate can be engaged into different gear slots, enabling adjustment and locking of the seat angle, providing users with a more comfortable sitting experience.