| 摘要 |
A lockable caster, more particularly a swivel caster, having a locking device for locking the running wheel to prevent it from running and/or to prevent the caster-fork from swivelling. In the cavity of the caster-fork is disposed an expanding toggle which takes the form of a foot-operated control lever, which is pivotally mounted in a socket, and is guided by a guide lug in a guide slot. On the trailing side of the caster, the expanding toggle is pivotally mounted below the fork back in a socket of a resilient or spring-loaded locking rocker. The fork back and locking rocker enclose the expanding toggle between themselves with prestressing. The guide slot may be disposed in the rear portion of the caster-fork. The guide lug takes the form of a resetting cam which in the locking position extends out of the guide slot to form a foot-operated cam to tilt the expanding toggle back into its release position.
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