Content discharge mechanism for pump-type container and pump-type product with content discharge mechanism
A content discharge mechanism for a container with a pump has a discharge outlet that is fixed in position. The device has an operation button and a cylindrical piston that move as one, as well as a ball valve that rests on a seat. The ball valve opens as the cylindrical piston retracts after an actuation to allow more fluid into the upstream passage chamber. A downstream passage with a valve for dispensation fluidly communicates with the upstream passage through a hole. As the cylindrical piston and its seal slide over the hole, the discharge from the downstream passage stops.
1. A content discharge mechanism of a pump type container comprising:
an operation part located on top,
a first cylindrical part having an inner surface comprising:
a piston having an annular sealing part formed on the outer surface of said piston and interlocking with said operation part;
a suction valve actuated in response to the movement of the piston;
a means for elastically energizing the operation part in the longitudinal direction with respect to the operation part;
an upstream side passage formed between said piston and said suction valve;
a second cylindrical part perpendicular to the first cylindrical part comprising:
a discharge outlet;
a downstream side passage reaching said discharge outlet from a communication hole with said upstream side passage, said communication hole formed in the perpendicular intersection of said first cylindrical part and said second cylindrical part;
a movable discharge valve provided on said downstream side passage, acting on said discharge outlet and having a means for elastically energizing in the lateral direction with respect to the operation part; and
a discharge outlet setting member integrated with an opening cap of the container for setting said discharge outlet in the state where it does not move even at the time of the actuation of said operation part,
wherein said annular sealing part of said piston advances together with said operation part from its stationary mode and the content discharge mechanism is not shifted from a discharge mode to a discharge finishing mode until the annular sealing part reaches the communication hole.
2. A content discharge mechanism of a pump type container according to claim 1 wherein said discharge valve is of a pressure storage type.
3. A content discharge mechanism of a pump type container according to claim 1 wherein
said upstream passage comprises a space region corresponding to a longitudinal direction of a container body and
said downstream passage comprises a space region corresponding to a lateral direction of the container body.
4. A content discharge mechanism according to claim 1 , wherein a first elastic member for energizing said piston to a stationary mode position and a second elastic member for energizing said discharge valve to a closed state are disposed outside said upstream passage and the downstream passage.
5. A content discharge mechanism according to claim 1 , wherein said suction valve further comprises a movable part equipped with an elastic member entirely made of a synthetic resin for energizing said suction valve to a closed state.
6. A content discharge mechanism according to claim 1 , wherein said device is secured to a container.