End contrary theftproof ammeter counter

The utility model relates to an ammeter subassembly, especially an end contrary theftproof ammeter counter. Including ending contrary ware, end being equipped with the contrary tooth of ending of an elastic perk on the ware, still be equipped with on the counting dish and end against the spacing tooth of tooth adaptation, end contrary tooth and constitute directional normal running fit, the reverse rotation of prevention counting dish with spacing tooth. Above -mentioned structure is through setting up the reverse that ends contrary ware and prevent the counting dish to prevent to reverse the action of power stealing, in case someone attempts various modes through the outside when reversing the counting dish, spacing tooth will be ended the contrary tooth of ending of contrary ware blocked, if in normal work, the extrusion of spacing tooth ends contrary tooth, will end contrary tooth pressure and open to check are goed ahead, formation can only one the directional normal running fit of direction pivoted, and end contrary ware through the simplest way, the elasticity clamping ring that utilizes the U type provides the state of upwarping that the power that resets guaranteed to end contrary tooth, guarantees to end contrary effect, the axle sleeve cover is established in the drive shaft simultaneously, does not just need to set up in addition the space and does not place and end contrary ware.