| 摘要 |
A direction lock assembly of a caster for a rolling walker comprises a pin housing, a lock pin and a caster base. The pin house sets a pin chamber for inserting a lock pin and attaches on an end of walker's front leg and pivotally connects with a caster base. The pin house has a passage outside of the pin chamber with two notches located on both ends. A handle connects with the lock pin through the passage of the lock housing. Therefore, the handle of the lock pin can switch the pin between the first position, pulling the handle up to an upper notch to hold the pin in an upper location for opening the lock to free the rotation of the caster in any direction, and the second position, pulling the handle down to a lower notch to hold the pin in a lower location for fixing the caster in the forward and backward direction. The caster base comprises a pivot shaft joined with the pivot bore for the caster to rotate in any direction, a pair of wheel support with a wheel pivot hole on each to joint with an axle of a caster wheel, and a pin bore for the lock pin to insert into thereof for fixing the caster in the forward and backward direction.
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