一般防盗门锁的钥匙孔是暴露在外面的,很容易遭到灰尘、液体的侵入和人为的损毁乃至暴力破坏,既使钥匙孔被顽童塞进一根小木棍,也会给用户带来意想不到的麻烦。本防盗门锁机构的特点是:钥匙孔朝向地面,从外表看只有一个手柄,钥匙孔内无沟槽、无弹子,锁的保密性高,无对开之忧,钥匙插入和拔出都很方便,不易被破坏或损毁,手柄设有过力保护装置,更可防暴力破坏。本产品已获专利权,并在北京第五届发明展览会上获优秀发明铜牌奖。 The keyhole of a typical anti-theft door lock is exposed to the outside and is easily exposed to dust, liquid intrusion, and vandalism or even vandalism. Even if the keyhole is inserted into a small wooden stick by the infant, it will bring unexpected surprises to the user. Trouble. The anti-theft door lock mechanism is characterized by: the key hole toward the ground, only one handle from the outside, there is no groove in the key hole, no marbles, the security of the lock is high, there is no worry, the key is inserted and pulled out Convenient, it is not easy to be damaged or damaged, the handle has over-force protection device, and it can prevent violent destruction. This product has obtained the patent right and won the Excellent Invention Bronze Medal at the 5th Beijing Invention Exhibition.