| 摘要 |
To simplify a fabrication and to reduce components of a door lock, in a cylinder part, a cutting part(9B) is formed along the length direction from one end of the completely opened side. When the above button(12) is inserted, a groove(9C) is introduced in the place where the projection(12A) of the button is positioned, therein a spindle housing(13) constituted of a flat part and of a cylinder part contains a hole(13A) having a nut part in the cylinder part in which a ball(15) is able to be inserted. Also a backup body(14) that is fitted to the spindle housing is constituted of a nut inside and of a groove(14A) more than one formed along the nut line.
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