| 摘要 |
A counterbalancing unit for a tripod head is assembled along a horizontal shaft. A pair of holders are slidably supported on the horizontal axis and disposed in an inside of a longitudinal member which is perpendicular to a base of a tripod head. One or more compressed elastic bodies are supported between the holders. One or more guide pines are connected with at least one of the holders to move horizontally inward in the longitudinal member together with at least one of the holders when the tripod head is tilted. A rotary member having a cam face at an edge thereof and connected with a strut is rotatably supported on the longitudinal shaft. The rotary member rotates with said strut causing the guide pin(s) to move into the longitudinal member by means of the cam face when the tripod head is tiled. The elastic bodies are compressed between the holders. As a result, the counterbalancing unit generates a restoring force in proportion to a torque created by tilting the tripod head and thereby, the counterbalancing unit allows the tripod head to be stably and smoothly tilted.
|
