Trigger-type ejector

Patent metadata

Field	Value
Publication number	US-10518281-B2
Application number	US-201716301690-A
Country	US
Kind code	B2
Filing date	Apr 10, 2017
Priority date	May 31, 2016
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

A trigger-type ejector includes: a pressure storage chamber formed in a nozzle head and communicating with a flow path through a communication hole; a pressure storage plunger including a large-diameter pressure receiving portion opposite a small-diameter pressure receiving portion and being movable between a close position where an ejection hole is closed and an open position where the ejection hole is opened; and a biasing member disposed in the pressure storage chamber and biasing the pressure storage plunger toward the close position, the trigger-type ejector being configured such that, when a pressure of a liquid in the pressure storage chamber becomes equal to or greater than a predetermined value, the pressure storage plunger moves from the close position to the open position against a biasing force of the biasing member and thus a liquid in the pressure storage chamber is ejected from the ejection hole to the outside.

First claim

The invention claimed is:

1. A trigger-type ejector comprising:
an ejector body attached to a mouth of a container in which a liquid is contained and including a flow path of a liquid;
a pump actuated by operation of a trigger and pumping the liquid in the container to the flow path; and
a nozzle head attached to the ejector body by being continuous with an outlet of the flow path and ejecting a liquid pumped to the flow path from an ejection hole to an outside,
the trigger-type ejector including:
a pressure storage chamber defined and formed in the nozzle head and communicating with the flow path through a communication hole;
a pressure storage plunger including a large-diameter pressure receiving portion and a small-diameter pressure receiving portion facing an opposite side to the large-diameter pressure receiving portion, the pressure storage plunger being disposed in the pressure storage chamber and being movable between a close position where the ejection hole is closed and an open position where the ejection hole is opened; and
a biasing member disposed in the pressure storage chamber and biasing the pressure storage plunger toward the close position, wherein,
when a pressure of a liquid in the pressure storage chamber becomes equal to or greater than a predetermined value, the pressure storage plunger moves from the close position to the open position against a biasing force of the biasing member such that the liquid in the pressure storage chamber is ejected from the ejection hole to an outside,
the nozzle head includes a first nozzle body including the ejection hole and a second nozzle body fixed to the first nozzle body, defining and forming the pressure storage chamber with the first nozzle body, and including the communication hole, and is attached to the ejector body at the second nozzle body,
the second nozzle body includes an inner cylinder wall surrounding the communication hole and including, in an inner periphery, at least one rear groove that communicates with the outlet of the flow path,
the ejector body includes a column disposed inside the inner cylinder wall rotatably and liquid-tightly relative to the inner cylinder wall and is provided with, in an outer periphery, at least one front groove that communicates with the communication hole, and
the nozzle head is rotatable relative to the ejector body between an ejection capable position where the rear groove and the front groove communicate with each other and an ejection incapable position where a communication between the rear groove and the front groove is blocked.

2. A trigger-type ejector comprising:
an ejector body attached to a mouth of a container in which a liquid is contained and including a flow path of a liquid;
a pump actuated by operation of a trigger and pumping the liquid in the container to the flow path; and
a nozzle head attached to the ejector body by being continuous with an outlet of the flow path and ejecting a liquid pumped to the flow path from an ejection hole to an outside,
the trigger-type ejector including:
a pressure storage chamber defined and formed in the nozzle head and communicating with the flow path through a communication hole;
a pressure storage plunger including a large-diameter pressure receiving portion and a small-diameter pressure receiving portion facing an opposite side to the large-diameter pressure receiving portion, the pressure storage plunger being disposed in the pressure storage chamber and being movable between a close position where the ejection hole is closed and an open position where the ejection hole is opened; and
a biasing member disposed in the pressure storage chamber and biasing the pressure storage plunger toward the close position, wherein,
when a pressure of a liquid in the pressure storage chamber becomes equal to or greater than a predetermined value, the pressure storage plunger moves from the close position to the open position against a biasing force of the biasing member such that the liquid in the pressure storage chamber is ejected from the ejection hole to an outside, and wherein
the trigger-type ejector further comprises a foaming portion provided in the ejection hole and foaming a liquid ejected from the ejection hole,
the nozzle head includes an inner cylinder wall surrounding the communication hole and including, in the inner periphery, at least one rear groove that communicates with the outlet of the flow path, and
the ejector body includes a column disposed inside the inner cylinder wall rotatably and liquid-tightly relative to the inner cylinder wall and provided with, in an outer periphery, at least one front groove that communicates with the communication hole,
thus the nozzle head is rotatable relative to the ejector body between an ejection capable position where the rear groove and the front groove communicate with each other and an ejection incapable position where communication between the rear groove and the front groove is blocked.

3. A trigger-type ejector comprising:
an ejector body attached to a mouth of a container in which a liquid is contained and including a flow path of a liquid;
a pump actuated by operation of a trigger and pumping the liquid in the container to the flow path; and
a nozzle head attached to the ejector body by being continuous with an outlet of the flow path and ejecting a liquid pumped to the flow path from an ejection hole to an outside,
the trigger-type ejector including:
a pressure storage chamber defined and formed in the nozzle head and communicating with the flow path through a communication hole;
a pressure storage plunger including a large-diameter pressure receiving portion and a small-diameter pressure receiving portion facing an opposite side to the large-diameter pressure receiving portion, the pressure storage plunger being disposed in the pressure storage chamber and being movable between a close position where the ejection hole is closed and an open position where the ejection hole is opened; and
a biasing member disposed in the pressure storage chamber and biasing the pressure storage plunger toward the close position, wherein,
when a pressure of a liquid in the pressure storage chamber becomes equal to or greater than a predetermined value, the pressure storage plunger moves from the close position to the open position against a biasing force of the biasing member such that the liquid in the pressure storage chamber is ejected from the ejection hole to an outside,
the nozzle head includes a first nozzle body including the ejection hole and a second nozzle body fixed to the first nozzle body, defining and forming the pressure storage chamber with the first nozzle body, and including the communication hole, and is attached to the ejector body at the second nozzle body,
wherein the ejector further includes a nozzle chip, wherein the nozzle chip is provided with a small hole whose opening cross-sectional area is smaller than that of the ejection hole and is attached to the ejection hole so as to atomize a liquid ejected from the ejection hole,
the second nozzle body includes an inner cylinder wall surrounding the communication hole and including, in an inner periphery, at least one rear groove that communicates with the outlet of the flow path,
the ejector body includes a column disposed inside the inner cylinder wall rotatably and liquid-tightly relative to the inner cylinder wall and is provided with, in an outer periphery, at least one front groove that communicates with the communication hole, and
the nozzle head is rotatable relative to the ejector body between an ejection capable position where the rear groove and the front groove communicate with each other and an ejection incapable position where a communication between the rear groove and the front groove is blocked.

4. The trigger-type e

Assignees

• Fujiwara Kotaro
• Yoshino Kogyosho Co Ltd

Inventors

• Fujiwara Kotaro

Classifications

• B05B11/1045

  the pump being preassembled as an independent unit before being mounted on the container (B05B11/1047, B05B11/1049 take precedence) · CPC title

• B05B11/0067 Primary

  having a valve seat located downstream the valve element · CPC title

• B05B11/104

  the outlet valve being opened by pressure after a defined accumulation stroke · CPC title

• B05B11/1011 Primary

  without substantial movement of the nozzle in the direction of the pressure stroke · CPC title

• B05B11/1067

  actuated by pressure · CPC title