Trigger-type liquid ejector

Patent metadata

Field	Value
Publication number	US-10799893-B2
Application number	US-201615754555-A
Country	US
Kind code	B2
Filing date	Aug 24, 2016
Priority date	Aug 31, 2015
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

A trigger-type liquid ejector which includes an ejector main body and a nozzle member in which an ejection hole is formed, the ejector main body including a vertical supply tubular pipe, an injection tubular portion, and a trigger mechanism, the nozzle member including a nozzle main body and a valve body, the nozzle main body including a valve seat portion having a valve seat plate, an inside of the valve seat plate communicating with the ejection hole, the nozzle main body including a tubular foam-forming portion positioned in a front of the ejection hole and configured to surround the ejection hole, and the foam-forming portion is provided with an outside air introduction hole penetrating through the foam-forming portion in a radial direction thereof.

First claim

What is claimed is:

1. A trigger-type liquid ejector comprising:
an ejector main body mounted on a container in which a liquid is contained; and
a nozzle member which is disposed in a front of the ejector main body and in which an ejection hole through which the liquid is ejected forward is formed,
wherein the ejector main body includes:
a vertical supply tubular pipe which extends in a vertical direction and through which the liquid in the container is suctioned up;
an injection tubular portion which extends forward from the vertical supply tubular pipe and whose inside communicates with an inside of the vertical supply tubular pipe, and
a trigger mechanism including a trigger extending downward from the injection tubular portion and disposed to be swingable rearward in a state of receiving a force, the trigger mechanism being configured to introduce the liquid from the inside of the vertical supply tubular pipe into the injection tubular portion and to inject the liquid from an inside of the injection tubular portion toward the ejection hole side when the trigger swings rearward, and
wherein the nozzle member includes:
a nozzle main body including a connection tubular portion connected to the injection tubular portion, and
a valve body provided inside the connection tubular portion to be movable rearward and forward in a state of receiving a force,
wherein the nozzle main body includes a valve seat portion including an annular valve seat plate which is disposed inside the connection tubular portion and on which a front end portion of the valve body is seated,
wherein an inside of the valve seat plate is configured to communicate with the ejection hole,
wherein the nozzle member includes a tubular foam-forming portion positioned in a front of the ejection hole and configured to surround the ejection hole,
wherein the foam-forming portion is provided with an outside air introduction hole penetrating through the foam-forming portion in a radial direction thereof,
wherein the foam-forming portion is separately formed from the nozzle main body and capable of being replaced with another foam-forming portion,
wherein on an outer circumferential surface of a front side portion of the injection tubular portion, a nozzle fitting tubular portion is fitted with the injection tubular portion in a water-tight manner, and
wherein the connection tubular portion is connected to the injection tubular portion via the nozzle fitting tubular portion.

2. The trigger-type liquid ejector according to claim 1 , wherein:
the nozzle member includes a lid body which is configured to selectively open and close the foam-forming portion; and
the lid body is connected to the nozzle main body to be rotatable forward.

3. The trigger-type liquid ejector according to claim 2 , wherein:
the nozzle main body further includes:
a nozzle tip disposed on a front side of the valve seat portion; and
a cap attachment cylindrical portion protruding from the valve seat portion forward and surrounding the nozzle tip on an outside in a radial direction thereof, and
the foam-forming portion is fitted to the cap attachment cylindrical portion on an outside in a radial direction thereof and is separately formed from the lid body.

4. The trigger-type liquid ejector according to claim 1 , wherein the valve body includes:
a tubular valve main body whose front end is closed and whose rear end is open,
a flange portion protruding from an intermediate portion in a longitudinal direction of an outer circumferential surface of the valve main body, and
a seal tubular portion protruding forward from a front surface of the flange portion,
wherein a plurality of through holes are formed at intervals in a circumferential direction of the valve main body in a portion of the valve main body continuous from a front side to the flange portion,
wherein the nozzle main body further includes a sliding tubular portion protruding rearward from the valve seat plate and disposed on a radial inner side of the connection tubular portion,
wherein the nozzle fitting tubular portion is fitted in a fixed state between an inner circumferential surface of the connection tubular portion and an outer circumferential surface of the sliding tubular portion,
wherein a rear end portion of the valve main body is fitted to an inner circumferential surface of the nozzle fitting tubular portion to be slidable in a forward and rearward direction in a water-tight state, and
wherein the seal tubular portion gradually expands in diameter forward and is fitted to an inner circumferential surface of the sliding tubular portion to be slidable in a forward and rearward direction in a water-tight state.

Assignees

• Fujiwara Kotaro
• Yoshino Kogyosho Co Ltd

Inventors

• Fujiwara Kotaro

Classifications

• B05B11/1011

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

• B05B11/1057

  Triggers, i.e. actuation means consisting of a single lever having one end rotating or pivoting around an axis or a hinge fixedly attached to the container, and another end directly actuated by the user · CPC title

• B05B11/1077

  characterised by a particular shape or material (B05B11/1076 takes precedence) · CPC title

• B05B11/1067

  actuated by pressure · CPC title

• B05B7/0056 Primary

  with disturbing means promoting mixing, e.g. balls, crowns · CPC title