The door latch is to prevent a member is easily opened. Modern appliances are generally latch doors and windows are metal, and ancient wooden door latch was structure. Latch is generally divided into two parts, one with a movable rod, the other part is a bolt hole, also called plug "whistle." Coat of metal latching doors. 1. fixed to the workpiece in the fixture or mold a group of metal latch pin 2. See "plug" on the doors and windows 3. 4. 5. pin plug with bolts, screws, bolt; bolt is An open door to prevent simple parts, usually metal, in two parts, part of the bar with a movable part of a "whistle." Part is usually fixed to the rod with the door, whistle fixed on the door frame, and the position to correspond. Much simpler structure than the lock, but the effect is quite, just lock the door, the latch in the door. When used, the whistle of the rod can be inserted. The basic form of the pin is cylindrical pin and tapered pins. Cylindrical pins fixed microsyringe interference pin hole. Repeated assembly and disassembly will reduce the positioning accuracy. Taper pins have a 1:50 taper, can self-locking, fixed by squeezing action taper pin holes, high precision, easy installation industry, for multiple assembly and disassembly. Hardware Factory Changzhou, Changzhou bolt, Changzhou automatic garage door www.ccclbj.com