| 摘要 |
Locking device for self-steering wheels that comprises at least one wheel, which in turn comprises a central hole (D.3) concentric with the axis of the wheel (D), suspension means (G), which comprise a spring (E) and a spring stop (A), and a supporting member (F), which by means of the suspension means (G) moves vertically with respect to the wheel (D). The wheel further comprises a first toothing (D.1), on the exterior of a cylinder that comprises the central hole (D.3), which turns together with said wheel (D), and a fastening device (C) formed by the locking device, by means of the vertical movement of the supporting member (F) under gravity, locks and unlocks the rotary movement of the wheel (D) by engaging with and disengaging from at least one toothed end (C.1) of the fastening member on the first toothing (D.1). The fastening member allows two positions with respect to the supporting member (F), enabling the user to activate and deactivate the locking device.
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