Novel upper and lower key base

The utility model relates to a novel upper and lower key base, the upper end rim of baffle includes that the limit is gone into to the arc card and the card is fixed a position about it, the lower extreme on arc card income limit is fixed a position with the card and is connected. When the jump ring that will reset was packed into, its left and right sides card foot was gone into the limit along the arc card and is down slided, is blocked on calorie location. Like this, the jump ring that restores to the throne can firmly be installed in upper and lower key base, and the working process can not take place displacement and song tuo, the stable performance that restores to the throne, reliable, and the stability, reliability and the security that have improved the tool to lock greatly, life also can effectively lengthen, and the product acceptance rate is high, and it is also easy, efficient assemble, this key base simple structure in addition, the production and processing is easy, is favorable to batch produc