| CPC F16M 11/046 (2013.01) [F16M 11/10 (2013.01); F16M 2200/047 (2013.01)] | 14 Claims |
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1. A supporting device for carrying a display on a work surface, the supporting device comprising:
a base disposed on the work surface;
an upright column disposed on the base, extending substantially along a gravity direction and including an opening;
a lifting module disposed on the upright column and including:
a sliding carrier sliding upward or downward between a lowest position and a highest position along the gravity direction, and partially extending outward along a first axis from the opening for the display to be arranged;
a constant force arm unit including:
a first rotating member self-rotatably disposed on the upright column and defining a constant first effective force arm; and
a first wire being wound on the first rotating member and having a first head end and a first tail end opposite to each other, wherein the first head end is connected to the first rotating member, and wherein a proportion of the first wire wound around the first rotating member gradually decreases when the sliding carrier is moved from the lowest position to the highest position;
a variable force arm unit including:
a second rotating member linked with the first rotating member and defining a variable second effective force arm; and
a second wire being wound on the second rotating member and having a second head end and a second tail end opposite to each other, wherein the second head end is connected to the second rotating member, and the second tail end is connected to the sliding carrier, and wherein a proportion of the second wire wound around the second rotating member gradually increases when the sliding carrier is moved from the lowest position to the highest position; and
an elastic force module including:
an elastic member having a first end and a second end opposite to each other, wherein the first end is connected to the first tail end of the first wire, and the elastic member constantly provides an elastic force, wherein when the sliding carrier is at the lowest position, the elastic force is largest, and when the sliding carrier is at the highest position, the elastic force is smallest;
wherein the sliding carrier and the display are able to be actuated between the lowest position and the highest position when an external force is applied, and wherein when the external force is removed, a first torque generated in the first wire and a second torque generated in the second wire are balanced each other, such that the sliding carrier and the display are stopped at an arbitrary position between the lowest position and the highest position,
wherein the elastic force module further includes an adjustment unit, and the second end of the elastic member is connected to the adjustment unit, and wherein a pre-stretching degree of the elastic member is able to be changed by operating the adjustment unit,
wherein the adjustment unit has an adjusting member and a fixing member, the fixing member is disposed on the upright column, and the adjusting member is screwed on the fixing member and partially protrudes outside the upright column,
wherein the adjusting member has a screw rod and a turntable fixedly connected to the screw rod, the fixing member has a body, an internal threaded portion, an external threaded portion and a straight portion, the internal threaded portion is screwed on the screw rod, the straight portion abuts against the upright column, the external threaded portion is screwed to the elastic member, and when the turntable is rotated, the body is moved relative to the screw rod by a limiting of the straight portion to adjust a stretching degree of the elastic member.
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