Abstract: A chair (1) includes an installation base (10), a leg column (11) supported by the installation base (10) in a tiltable manner, a seat body (12) supported on an upper part of the leg column (11), an elastic member (19) which urges the leg column (11) to an initial tilted posture, and a coming-off restriction member (22) which restricts coming-off of the leg column (11) from the installation base (10). On a support wall (16) of the installation base (10) having an insertion hole (20) through which part of the coming-off restriction member (22) is inserted, a slide guide (21) coming into slidable contact with a slide guide (21) at a peripheral edge portion of a lower surface side of the insertion hole (20) is provided. The coming-off restriction member (22) has an upwardly protruding spherical guide surface (23) which is slidably brought into contact with the slide guide (21) below the insertion hole (20).

Abstract: A chair (1) includes an installation base (10), a leg column (11) supported by the installation base (10) in a tillable manner, a seat body (12) supported on an upper part of the leg column (11), an elastic member (19) which urges the leg column (11) to an initial tilted posture, and a coming-off restriction member (22) which restricts coming-off of the leg column (11) from the installation base (10). On a support wall (16) of the installation base (10) having an insertion hole (20) through which part of the coming-off restriction member (22) is inserted, a slide guide (21) coming into slidable contact with a slide guide (21) at a peripheral edge portion of a lower surface side of the insertion hole (20) is provided. The coming-off restriction member (22) has an upwardly protruding spherical guide surface (23) which is slidably brought into contact with the slide guide (21) below the insertion hole (20).

Abstract: The IV stand includes: a tray having an object placing surface on which an object is capable of being placed; and a guide member that is arranged above at least a part of the object placing surface of the tray and prevents the object placed on the tray from falling down, in which the tray and the guide member are directly or indirectly coupled to the support pole unit, and a holding space that allows an operator to hold the guide member as a holding handle is secured between the guide member and the tray. With the aforementioned structure, it is possible to provide an IV stand that makes it possible to enhance the usability and operability without deteriorating appearance and increasing occupied space.

Abstract: The cart device includes a base portion capable of traveling on a floor; a support base body provided on the base portion so as to project upward; and a top board supported by the support base body from below. In addition, the support base body includes a fixed post so as to extend upward; a movable post provided in the fixed post so as to be capable of moving in an up-and-down direction relative to the fixed post, the movable post-supporting the top board from below; and a bumper member provided on an outer lateral surface of the movable post so as to be capable of absorbing impact.