| 摘要 |
<p>An armrest device comprises an armrest injection molded part (1), an armrest fixing member (2), and a rotation mechanism. The rotation mechanism comprises a slide slot (3), a chute sheet metal member (4), a rotation bolt (5), and a rotation limiting fixing member for fixing the armrest injection molded part (1) in a folded position or a use position. The rotation limiting fixing member comprises a steel ball (12) and limiting holes for limiting the steel ball (12). When the armrest injection molded part (1) rotates, the armrest injection molded part (1) rotates about the rotation bolt (5). When the armrest injection molded part (1) rotates to the use position of the armrest, an inner bolt (13) is urged against a spring (11), the spring (11) presses the steel ball (12) into the limiting hole in the use position, and the steel ball (12) is engaged with the limiting hole. During folding, the steel ball (12) slides out of the limiting hole in the use position, and compresses the spring (11). When the armrest injection molded part (1) rotates to the folded position of the armrest, the inner bolt (13) is urged against the spring (11), the spring (11) presses the steel ball (12) into the limiting hole in the folded position, and the steel ball (12) is engaged with the limiting hole in the folded position. Abnormal sound or fallback incurred injury is not incurred during use, the use is convenient, and the service life is long.</p> |
