| 摘要 |
PROBLEM TO BE SOLVED: To combine thinning of a keyboard and maintenance of key stroke size and facilitate assembly by locking the lower ends of first and second links connected to guide the vertical motion of a key top, to a sliding locking part and two turn locking parts of a lower locking part of a holder member, and locking the upper ends to a plurality of upper locking parts of the key top. SOLUTION: Lower end side locking pins 36a, 36b and 42 of movable first and second links 8, 10 of a guide support member 6 assembled into an X-shape from the side view are fitting inserted in rotation locking parts 46 and a sliding locking part 48 of a holder member 14, and upper side locking pins 26 and 30a, 30b are assembled being locked to a sliding locking part 28 and rotation locking parts 32 of a key top 4. When the key top 4 is depressed down, the first and second links 8, 10 are turned, and a pressing part 22 brings a movable contact 24 into contact with a switching part 20 via a rubber spring 12. Constitution for vertically sliding and guiding a key stem by a holder part is dispensed with, and only one sliding locking part 48 is required. |
