作者：alpha_boy

维修起因

有扇卧室门的执手锁出现了小锁舌卡住，无法伸出锁舌，关门时不能卡住门的问题：

于是就好奇拆开来看看了。

维修过程

开始也是从内侧逆时针拧掉螺丝，拔掉把手面板的：

然后就出岔子了，耷拉一声什么东西掉下去了，还有小弹簧，小铜柱掉出来~~奇妙的是小锁舌反而弹出来了？掉下去的是一根对装连接管，下图是后来从淘宝重新买来配上去后再拍的：

当时尝试用线在透明胶条上打结，想把掉下去的连接管粘上来，没成功，太深了，空心的地方挺多的。要拧开从下往上数第二个锁芯固定螺丝：

也就是这个螺丝：

拔出锁芯（可以趁机量量螺丝孔两边的边距，我这个好像是32+32mm？以后如果钥匙丢了要换锁芯会方便些，不过我忘了量锁芯高度了）：

之后拧掉锁体上下边缘的固定螺丝，拔出锁体，才能看到里面（不过下图红圈处还是锁芯固定螺丝）：

门里面感觉好空荡：

因此只好把另一边把手上边的连接管拧下来：

再量尺寸从网上买零件配了。其长度是33毫米：

其外螺纹是4.5毫米的，听说这叫外丝M5：

同理，其内螺纹3.5毫米是内丝M4：

有游标卡尺时量尺寸还是比较方便的（签到红包没地方用的话可以考虑~~）： 

 买相似尺寸的连接管就行，一体化的省心，当时我误买成分体的了： 

为了防止松脱，我在装上前对两根连接管的M5外丝那头都抹了680高强度厌氧胶：

对了，在连接管到货前，我还尝试用膨胀螺丝胀塞剪掉一部分，做了个简易连接管应急，不过没啥大用，几天就松脱了：

言归正传，装回去，问题就暂时解决了：

几个月后问题复发~~另一扇门上的执手锁也闹同样的毛病，于是又好奇地拆出那扇门的锁体，把里面也打开了：

说实话还是没搞懂哪里卡住的，差点装不回去，除了同样掉出来一根小弹簧和几个小铜柱，也不知道哪里坏了？装回去后也能继续用？真奇怪。

再然后干脆就是只用镊子挑小锁舌的办法来暂时修复了。

总结

对于小锁舌卡死这个问题，感觉用镊子挑最省事了，拆解会掉出更多零件，也不知道会有啥其他性能损失？

在淘宝搜了搜，发现舍得花钱的话，可以找形状（主要是面板螺丝数量）、面板长度相同的锁体更换；锁舌方向不同可以按回去换个方向再弹出来的；顶多就是把手弹力太弱的话，可能要买重弹簧锁体加强弹性（买错就是把手用起来不舒适，也能凑合用） 。

另外螺丝防松厌氧胶我用错了，680是高强度的，但还有不可拆卸型的263，可能更适合（之前我是看了修电动牙刷主轴螺丝松动的帖子后瞎买的，不知道还有不可拆卸型）： 

还有室内门如果要换锁芯的话，有的店家铝合金的便宜，有的店家锌合金的便宜，也不知道哪个性价比高？寿命具体差多少？铜合金的一般价格翻1、2倍（个人想法是可以用签到红包先买个铝的试试练手~~看商家文案似乎高度，长度差1、2毫米也行）……

 （注意，本贴中的商品都是随便搜的，不见得价格最低或DSR评分最高，主要是用来参考外观、形状的。）

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