| 摘要 |
<p>PROBLEM TO BE SOLVED: To independently lock of or unlock a stop of front casters attached to a front shell bottom part.SOLUTION: A caster lock device includes: an operation mechanism 21 interlocked to depression of a switch button 13 of a switch part 11; and a pressing-force stop mechanism 51 that prevents rolling of wheels by stop force of pressingly contacting/stopping the lateral surfaces or medial surfaces of the wheels of front casters 8 by transmitting actuation by the operation mechanism 21 via a transmission mechanism 41 including a wire 42 for pulling, pressing or thrusting back. The operation mechanism 21 includes: a connection part 23 for guiding the depressing operation of the switch button 13; latchet mechanisms 71 operated in conjunction with both end sides of the connection part 23; a V-shaped link arm 24 swingably attached to the switch button 13; and a slider 32 for traction of the wire 42, vertically moving by lifting/lowering swinging of the V-shaped link arm 24.</p> |
