| 摘要 |
a) Braking device for transport vehicles and the like, particularly relating to vacuum cleaners mounted on a trolley, b) Braking device characterised in that the slit (7) is formed so that it extends on both sides of a vertical line (H) drawn from the centre (5a) of the wheel axle (5), perpendicularly to a tangent (Q) to the geometric position in the form of an arc of a circle (P) passing through the pivot point (6d) of the braking element (6); and in that the slit (7) must at the same time intersect the geometric point in the shape of an arc (P) on both sides of the vertical line (H). c) The invention relates to a braking device for transport vehicles and the like, particularly relating to vacuum cleaners mounted on a trolley. <IMAGE>
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