Patent ID: 8955724
Filing Date: 2015-02-17
Classification: B05B,B05C,B32B,H05K,Y10T

Abstract:
1. A liquid dispensing pump comprising: a pump body; a valve body comprising an inlet path to which liquid is supplied, a reservoir in which the liquid supplied via the inlet path is to be stored, and a discharge path through which the liquid stored in the reservoir is discharged, the valve body being installed at the pump body; a valve rod configured to pressurize the liquid stored in the reservoir of the valve body so that the liquid is discharged via the discharge path; an operating rod connected to the valve rod and configured to drive the valve rod to move relative to the valve body while permitting the valve rod to move relative to the operating rod within a predetermined gap distance in a lengthwise direction of the valve rod; a cam member comprising a through hole through which the operating rod passes and cam protrusions formed around the through hole, the cam member having inclined surfaces on which a cam follower travels, the cam member being installed at the pump body and rotatable about a rotation axis; the cam follower comprising rollers configured to roll on the inclined surfaces of the cam protrusions when the cam member rotates, the cam follower coupled to the operating rod and configured to drive the valve rod to move relative to the valve body; an elastic member installed between the pump body and the cam follower and configured to exert an elastic force onto the cam follower toward the cam member; and a gap member interconnecting the valve rod and the operating rod while permitting the valve rod to move relative to the operating rod within the gap distance, wherein the valve rod comprises a hanging protrusion, wherein the gap member comprises a hanging groove in which the hanging protrusion is received, wherein the hanging groove is sized to provide the gap distance for the movement of the hanging protrusion within the hanging groove relative to the gap member.