| 摘要 |
<p>Combination of a cylindrical lock (1, 1', 1'') and a flat key (2, 2', 2'') that is provided on its one wider surface with a variation groove (5) having its front portion provided in the region of the key (2, 2', 2'') tip with a lead-in enlargement (50) for guiding a side projection (41) of a side adjuster (4). The side projection (41) of the side adjuster (4), being guided in a guide shaft (31), extends into said variation groove (5). When a corresponding key (2) is inserted into a key passage (30), said side adjuster (4) resumes a position in which it is completely inserted into a rotary core (3), and when a wrong key (2) is inserted therein, the side adjuster overlaps (4) said rotary core (3) outer cylindrical surface (3) and engages with opposite locking recess (103) performed in the cylindrical lock (1, 1', 1'') housing (10).; Variation groove (5, 511) of a superior key (2) has in at least one position (P1 to P5) in one its functional place (51) controlling the position of the side adjuster (4), a vertical position that differs from the vertical position of the functional place (51) of a variation groove (5, 511', 511'') of a subordinate key (2', 2'') in the same position (P1 to P5) by at least one dimensional distance (a).</p> |
