| 摘要 |
A lock includes a rose having two positioning plates on a side thereof, a handle rotatably extending through the rose, a spindle including a first end securely attached to the handle, and a return disc mounted to a second end of the spindle. The return disc includes an annular wall and a notch. A return spring is received in the annular wall and extends through the notch of the return disc, with two ends of the return spring being respectively attached to the positioning plates of the rose for returning the handle. Since the return spring is directly received in the annular wall of the return disc, a compact design is provided.
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