| 摘要 |
A latch device for a foldable steering head on an electric motorcycle has a base, an inner wheel, and an outer ring. The inner wheel is mounted on the base and has a radius-varying actuating shaft axially penetrating the inner wheel and a latching block radially and movably mounted inside the inner wheel. The latching block has an abutting end and is operationally pushed by the actuating shaft. The outer ring rotatably surrounds the inner wheel and has an inner periphery and multiple detents defined on the inner periphery to operationally engage the abutting end of the latching block so that the latch device locks. By simply pushing the actuating shaft to a radius-narrowing area, the latching block is released from push of the actuating shaft and can move inward to allow the outer ring to rotate. Therefore, the steering head can be conveniently adjusted.
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