US 12,490,833 B2Granted

Chair seat and clamping device

AssigneeAtec International Team Co., Ltd.

InventorTe-Chun Chen

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Abstract

A chair seat is provided for combining with two armrests. Each armrest includes a crossbar. The chair seat includes a base and two clamping devices. The base includes at least one armrest slot and two mounting holes. The armrest slot is adapted for inserting the crossbar, and the mounting hole is in communication with the armrest slot. The two clamping devices are separately installed within the two mounting holes. Each clamping device includes a mounting base, a clamping element, an operating element, and a transmission element. The mounting base is affixed within the mounting hole and features an installation slot on one side. The clamping element is installed within the installation slot, facing the crossbar. The operating element is situated on the opposite side of the installation slot relative to the mounting base. The transmission element connects the clamping element and the operating element. The operating element is suitable for driving the transmission element, which in turn moves the clamping element toward the crossbar, thereby securing it.

Claims12

Dependent claims

A chair seat adapted for combining with two armrests, each of the armrests including a crossbar, the chair seat comprising:

a base, including at least one armrest slot and two mounting holes, the armrest slot adapted for inserting the crossbar, and the mounting holes being in communication with the armrest slot;
and
two clamping devices, each installed in one of the two mounting holes, each clamping device comprising:
a mounting base, installed and fixed in the mounting hole, and having a mounting slot on one side;
a clamping element, installed in the mounting slot and facing the crossbar;
an operating element, located on an opposite side of the mounting base relative to the mounting slot, the operating element being a rotating handle having a central hole;
and
a transmission element, connected between the clamping element and the operating element, the transmission element comprising a mounting shaft and a pressing member, one end of the mounting shaft being installed in the central hole of the rotating handle, and the pressing member being installed at the other end of the mounting shaft and located in the mounting slot, the pressing member having a first toothed element that presses against the clamping element;
wherein a second toothed element is provided at a bottom of the mounting slot, the second toothed element being engaged with the first toothed element;
and
wherein the operating element is adapted for driving the transmission element, causing the transmission element to move the clamping element towards the crossbar and clamp the crossbar.

8 more elements

A clamping device suitable for installation on a mounting hole of a base of a chair seat, the clamping device comprising:

a mounting base, installed and fixed in the mounting hole, and the mounting base having an installation slot on one side;
a clamping element, installed in the installation slot;
a rotating handle, set on an opposite side of the mounting base relative to the installation slot, the rotating handle having a central hole;
and
a transmission element, comprising a mounting shaft and a pressing member, one end of the mounting shaft is installed in the central hole, and the pressing member is installed at the other end of the mounting shaft and located in the installation slot, the pressing member has a first toothed element on one side close to the installation slot, and the pressing member presses against the clamping element;
wherein a second toothed element is provided at a bottom of the installation slot, the second toothed element is coupled with the first toothed element;
wherein when the rotating handle rotates in one direction, the mounting shaft drives the first toothed element and causes the first toothed element and the second toothed element to relatively move, thereby causing the pressing member to drive the clamping element to move up and down.

4 more elements

Dependencies are inferred from the claim text.