| 摘要 |
PURPOSE:To provide a foot-warmer frame, supporting legs at four corners of which are freely stretchable, by a structure wherein adjustable supporting legs are provided respectively in fixed supporting legs and an actuating rod is detachably engaged with a rack attached to each adjustable supporting leg. CONSTITUTION:When an operating piece 20 is pivoted inwards under the condition that the long side of a stopping par6t 25 is directed in horizontal direction by pivoting the knob 23 of a safety device 22, wheels 10A and operating rods 10 are pushed up and respective actuating rods 11 are pivoted against the energizing forces of springs 13 so as to release the claws 11A of the actuating rods 11, which engage with racks 17. Next, when a foot-warmer frame is lifted gradually, adjustable legs 14 are automatically pushed out of fixed supporting legs 1 by the action of compression springs 7. When the operating piece 20 is returned to its initial state under the condition that the adjustable supporting legs 14 are stretched by the desired length, the operating rods 10 are pushed down by the springs 13 and at the same time the actuating rods 11 are pivoted, resulting in engaging the claws 11A with the racks 17 and fixing the adjustable supporting legs.
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