From adjustable braille pen of dynamic formula with key function cap for brush

The utility model discloses a from adjustable braille pen of dynamic formula with key function cap for brush relates to blind person's articles for use technical field. Including the cap for brush, a handheld handle, pen -holder, a needle and spring, the cap for brush and a handheld handle swing joint, a handheld handle and pen -holder are connected, the spring sets up in the pen -holder, needle passes the spring and sets up in the pen -holder. Easy and simple to handle, with the partial needle part that makes stretchable automatically into of a needle fixed in traditional braille pen, when using, the user can indicate that length and comfort level in certain extent suitably adjust pen point part branch length according to different users, has increased the comfort level the when blind person reads and writes, when not using, can contract a needle part in handhold portion, has significantly reduced to blind person's potential safety hazard. 本实用新型公开种带有钥匙功能笔帽的自动式可调节盲文笔，涉及盲人用品技术领域。包括笔帽、手持笔柄、笔杆、笔针和弹簧，所述笔帽和手持笔柄活动连