| 摘要 |
An adjustable chair arm assembly is provided which can be vertically adjusted in order to readily accommodate users of different sizes. The chair arm assembly provides support members having overlapping portions which cooperate to slide vertically with respect to each other. One of the support members maintains a relatively fixed position with the chair and the other support member, having an arm rest, slides vertically with respect to the first support member to adjust the height of the arm rest. A series of support projections are vertically disposed along the overlapping portion of one of the support members. A latch member, mounted for sliding movement along the support projections, has at least one latch projection for selectively engaging the support projections at any position therealong. Resilient member is coupled to the latch projection for urging the latch projection into engagement with the support projections thereby preventing the support members from sliding with respect to each other for supporting the arm rest in any selected height position. A pivotable actuator is coupled to the second support member and attached to the latch projection for supporting the load created when the user leans on the arm rest, and for selectively retracting the latch projection from the support projections, thereby permitting sliding movement between the support members in order to adjust the height of the arm rest. When the actuator is released, the resilient biasing member urges the latch projection to reenage the support projections in the selected position.
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