| 摘要 |
<p>The present invention provides a door lock having an inner slide member (4) and an outer slide member (5) each associated with a respective door handle (1, 2). The door handles (1, 2) are rotatable independently of each other and rotation of either handle (1, 2) causes the respective slide member (4, 5) to be retracted against a restoring force (3). The lock also includes an intermediate slide member (11) on which is mounted the lock bolt (12). The lock includes a first engagement means (13) which provides engagement between the inner slide member (4) and the intermediate slide member (11) such that the intermediate slide member (11) is retracted together with the inner slide member (4) upon rotation of the inner door handle (1). A second engagement means (16-29) is also provided and this is operable to provide engagement between the intermediate slide member (11) and the outer slide member (5). The second engagement means (16-29) includes an electromagnet (16) and an engagement member (22).</p> |
