JPH0733898Y2 - Trigger sprayer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a trigger sprayer.

"Problems to be solved by conventional techniques and devices" A trigger type sprayer configured to spray a liquid in a container by a trigger operation is known. Conventionally, this kind of atomizer can obtain the spray only when the trigger is pulled, and continuous spray cannot be obtained even if the trigger is continuously operated quickly. In consideration of such a point, the applicant of the present invention has proposed a sprayer that can obtain a spray when the trigger is pulled and when the trigger is returned (continuous application) (Japanese Patent Application No. 1-243193). This sprayer has a spray nozzle at the tip, is equipped with a discharge valve, a cylinder and a suction valve in this order from the spray nozzle to the upstream side, and is a trigger sprayer in which a piston operated by a trigger is installed in the cylinder. The cylinder is divided into two cylinders of large diameter and small diameter,
The large-diameter cylinder communicates with the upstream side, and the small-diameter cylinder communicates with the downstream side, and the pistons are installed in both cylinders and mechanically linked so as to work in reverse dynamics. It has a configuration in which it is unidirectionally communicated to the downstream side via.

However, although the above sprayer enables continuous spraying, since this sprayer sprays the content liquid by utilizing the diameter difference between the two cylinders, the spraying amount by one reciprocating motion of the trigger is small, There is room for improvement in this respect.

The present invention has been made in view of the above points, and an object thereof is to provide a trigger type sprayer capable of continuous spraying and capable of spraying a larger amount by one reciprocating motion of a trigger.

"Means for Solving the Problems" A spray nozzle is provided at the tip, and a discharge valve, a cylinder, a suction valve, and a suction port are sequentially provided upstream from the spray nozzle, and a piston operated by a trigger is provided in the cylinder. In the built-in trigger type sprayer, the cylinder is divided into two cylinders, a first cylinder and a second cylinder, and pistons are respectively installed in both cylinders so that they are mechanically linked so as to work in reverse dynamics. A switching valve for communicating the inside of the pressurized cylinder with the discharge valve is provided between the two cylinders, and two flow passages from the first and second cylinders to the suction port are provided, and a suction valve is provided in each flow passage. It becomes.

"Operation" Since it has the above configuration, it may be used in the same manner as before, but
The following operations occur with the trigger operation.

When the trigger is pulled, the pistons in both cylinders are actuated together so that the first cylinder is in the pressurizing state and the second cylinder is in the depressurizing state, and the switching valve is hydraulically actuated between the first cylinder and the discharge valve. In order to communicate with each other, the pressurized liquid in the cylinder flows out from the first cylinder through the switching valve, and is ejected from the spray head through the discharge valve. At the same time, liquid flows into the second cylinder through the second suction valve.

When the trigger is returned, the pistons in both cylinders are returned together, the switching valve connects the second cylinder and the discharge valve, the inside of the first cylinder is in the decompression state, the inside of the second cylinder is in the pressure state, and the second cylinder At the same time the pressurized liquid inside flows out of the second cylinder through the switching valve and out of the spray head through the discharge valve,
Liquid flows into the first cylinder through the first suction valve.

[Examples] The drawings show examples of the present invention.

In the figure, 1 is an inverted L-shaped sprayer main body, 2 is a screw cylinder rotatably attached to the lower end of the sprayer main body for attachment to a liquid container, and 3 is pivotally attached to the lower front surface of the sprayer main body. The trigger 4 is a spray nozzle provided at the tip of the sprayer body.
Is a discharge valve provided in the front part of the sprayer body, 6 and 7 are the first and second cylinders diagonally provided at the corners of the sprayer body, and 8 and 9 are installed in both cylinders 1st piston and 2nd piston, which are activated by gold, 10
Is a switching valve for communicating the inside of the pressurized cylinder with the discharge valve 5, 11 and 12 are first and second flow furnaces from the first and second cylinders 6 and 7 to the suction port 13, 14,15 are each flow passage 11,12
The first and second suction valves 16 respectively provided in the suction pipes 16 are vertically extending suction pipes from the lower end of the sprayer body.
A series of liquid flow passages are formed from the spray nozzle 4 to the spray nozzle 4, and the flow passages are formed between the suction port 13 and the discharge valve 5, and the suction port 13-
First suction valve 14-First cylinder 6-Switching valve 10-Discharge valve 5
And suction port 13-second suction valve 15-second cylinder 7-switching valve
10-Branches into two parallel flow paths of the discharge valve 5.

The first cylinder 6 and the second cylinder 7 are arranged coaxially with the former as the lower side and the latter as the upper side, and a partition wall 17 is provided between the two, and a window hole 18 with a skirt is provided at the center of the partition wall. Also, the first suction valve is provided on the lower surface of the inner end portion of the first cylinder 6.
A through hole 19 communicating with 14 is formed in the lower surface of the inner end portion of the second cylinder 7 and a through hole 20 communicating with the second suction valve 15 is provided, and a vent hole 21 is provided behind the second cylinder 7.

A nose 22 is provided on the outer side of the first piston 8 so as to mechanically link the nose 22 to the middle part of the trigger 3, and a recess 23 is formed on the inner side of the nose 22 to allow a rod 24 to be inserted in the recess. The base is fitted, and the main part of the rod is projected in the first cylinder 6 in the axial direction, and the rod is fitted in the window hole 18 so as to be slidable in an airtight and watertight manner so as to project into the second cylinder 7. The second piston 9 is fitted to the tip of the piston 8 to mechanically link the pistons 8 and 9. Further, a compression spring 25 for pressing the first piston 8 downward is arranged between the first piston 8 and the partition wall 17 in the second cylinder 6.

With the above-described configuration, the trigger 3 is used by being screwed to the mouth of the container containing the liquid with the screw cylinder 2, and the trigger 3 is used as the compression spring.
When pulled against 25, the first piston 8 is actuated and at the same time the second piston 9 is driven via the rod 24. Along with this, the inside of the first cylinder 6 is in a pressurized state, and the second cylinder 7
The inside becomes a decompression state, and the switching valve 10 communicates the first cylinder 6 and the discharge valve 5 with hydraulic pressure, and the pressurized liquid in the first cylinder 6 flows into the discharge valve 5 through the switching valve 10. Further, the spray nozzle 4 is configured to eject (spray). or,
At this time, the liquid in the container is sucked into the second cylinder 7 in the depressurized state through the suction pipe 16, the second suction valve 15, and the through hole 20.

Next, when the trigger 3 is released, both pistons 8 and 9, the trigger 3 and the like move in reverse due to the elastic force of the compression spring 25, and the inside of the second cylinder 7 is in the pressurizing state and the inside of the first cylinder 6 is in the depressurizing state. At the same time, the switching valve 10 connects the second cylinder 7 and the discharge valve 5. Then, the pressurized liquid in the second cylinder 7 is changed over to the switching valve.
10. It is configured so as to eject (spray) from the spray nozzle 4 via the discharge valve 5. Further, the liquid in the container is sucked into the first cylinder 6 in the depressurized state through the suction pipe 16, the first suction valve 14, and the through hole 19.

"Effect of device" As described above, the trigger type atomizer of the present invention can continuously atomize the content liquid by the above-mentioned configuration, and, compared with the conventional atomizer of this type, it can be triggered once. It is possible to spray a larger amount by reciprocating, and it can be used extremely effectively when it is necessary to spray a large amount of the internal solution continuously.

[Brief description of drawings]

 The drawings are vertical side views showing an embodiment of the present invention. 1 ... Atomizer body, 2 ... Screw cylinder, 3 ... Trigger, 4 ... Spray nozzle, 5 ... Discharge valve, 6 ... First cylinder, 7 ... Second cylinder, 8 ... First piston, 9 ... 2nd piston, 10 ... switching valve 11 ... first flow passage, 12 ... second flow passage 13 ... suction port, 14 ... first suction valve 15 ... second suction valve

Claims (1)

[Scope of utility model registration request] 1. A trigger type in which a spray nozzle is provided at the tip, a discharge valve, a cylinder, a suction valve and a suction port are sequentially provided upstream from the spray nozzle, and a piston operated by a trigger is provided in the cylinder. In the atomizer, the cylinder is divided into two cylinders, a first cylinder and a second cylinder, and pistons are installed in both cylinders so that they are mechanically linked so as to work in reverse dynamics and pressurize between both cylinders. A switching valve for communicating the inside of the cylinder and the discharge valve is provided, two flow passages from the first and second cylinders to the suction port are provided, and a suction valve is provided in each flow passage. Characteristic trigger type sprayer.