JPS6031801Y2 - trigger type sprayer - Google Patents

Description

[Detailed explanation of the idea] This proposal relates to a trigger set sprayer.

As the trigger set sprayer, a cap-shaped attachment means is attached to the lower end of the upright cylinder, and an injection cylinder is connected to the upper end of the upright cylinder, and a cylinder communicating with the inside of the upright cylinder is connected to the front of the upright cylinder, respectively. The above-mentioned attachment part is attached to the mouth and neck of the container body, and a suction pipe is vertically connected to the container body through a suction valve from the lower part of the upright cylinder part, and a suction pipe is attached to the injection cylinder part. A trigger is vertically mounted by pivoting the upper end thereof, and the front end of a piston rod protruding from a piston slidably fitted into the cylinder is engaged with the trigger, and the suction valve is opened by operating the trigger. It is known that the liquid inside the container is sucked into the upright cylinder through the injection cylinder, and is sprayed from a nozzle hole at the front end of the injection cylinder through a discharge valve provided in the injection cylinder.

However, in this type of sprayer, the mechanism to prevent negative pressure inside the container due to liquid reduction is incomplete, and especially when spraying continuously, the inside of the container tends to become negative pressure, and the liquid inside the container tends to become negative. It had the disadvantage of being prone to liquid leakage.

The present invention eliminates the above-mentioned drawbacks, and will be described below with reference to the drawings. Reference numeral 1 indicates a container body, and 2 indicates a neck portion of the container body.

A sprayer main body 3 is attached to the neck of the container body.

The main body of the sprayer has a cap-shaped attachment means 5 at the lower end of the upright cylinder portion 4, and the attachment means is screwed onto the neck of the container body.

An injection cylinder 6 is projected forward from the upper end of the upright cylinder, and a cylinder 7 is projected forward from the front surface of the upright cylinder below the injection cylinder in communication with the inside of the upright cylinder.

It is preferable to fit a ROCAP 8 into the front end of the injection cylinder, and the ROCAP integrally connects the upper surface of the front end of the injection cylinder and the upper surface of the cap circumferential wall with a hinge 9 provided so as to be elastically reversible. It is a provision.

A suction valve 11 is provided on the bottom wall 10 of the upright cylinder, and a suction pipe 12 extends vertically from the suction valve into the container body.

Further, the upper end portion is pivotally attached to the injection cylinder portion 6, and the trigger 13 is vertically disposed so as to be freely swingable in the front and rear directions.

Furthermore, a piston 14 is fitted into the cylinder, and the front end of a piston rod 15 that projects forward from the piston is engaged with the rear surface of the intermediate portion of the trigger.

The trigger 13 is biased so that when it is pulled rearward and then released, it can return to the S sagging state.A spring 16 for biasing the trigger 13 may be provided inside the cylinder as shown in Fig. 1. Alternatively, it may be provided inside the outside air inflow cylinder, which will be described later, as shown in FIG.

Reference numeral 17 denotes a discharge valve, the discharge valve hole 18 of which is bored in a partition wall provided in the base end of the injection cylinder, and the discharge valve body 1
Reference numeral 9 is attached to the rear end of the spring 20, and is integrally molded from a synthetic resin material together with a tip 22 with a spin groove 21 attached to the front end of the spring. The end of the groove is fitted in communication with the nozzle hole 23 in the front end wall of the injection cylinder, and the discharge valve body is provided with its rear end closing the discharge valve hole under pressure.

In the above-mentioned trigger set sprayer, in the present invention, an outside air inflow cylinder 24 that communicates with the interior of the container is projected forward from the upright cylinder part 4, and a valve hole 26 is bored in the front end wall 25 of the cylinder. The valve rod 27 is inserted loosely, and the valve body 28 is housed in the outside air inflow cylinder in a forward biased state, and the outside air intake valve 29 is formed by the valve body and the valve hole.

The front end of the valve stem is brought into contact with the trigger so that when the trigger is pulled, the trigger contacts the valve stem and is pushed in, thereby opening the outside air intake valve.

The spring 30 for biasing the valve body may be made of synthetic resin and integrally molded with the valve body as shown in FIG. 1, or may be a metal spring as shown in FIG. 2.

In the case of FIG. 2, the spring also serves as a trigger biasing spring.

It is preferable to provide the outside air inflow tube between the injection tube part 6 and the cylinder 7 as shown in the figure, but in this case, in order to communicate the inside of the outside air inflow tube and the container body, a part of the bottom wall of the upright tube is raised. ,
Passage 31 to the outside air inflow cylinder into the lower part of the marked bottom wall 10a
will be opened.

In the above configuration, when the trigger 13 is pulled, the valve stem 27 is pushed in, so the outside air intake valve 29 opens, and when the inside of the container is under negative pressure, the outside air is transferred to the outside air inlet pipe 24, It enters the container body through the passage 31.

When the trigger is released, the valve body 28 advances and closes the valve.

This proposal has the above configuration, and when the trigger is pulled, the trigger pushes the valve stem and opens the outside air intake valve, so the opening and closing of the outside air intake valve is performed automatically at the same time as the spray operation, which is inconvenient for operation. I don't feel anything at all,
This opening/closing operation can be performed reliably.

In addition, since the inside of the container is communicated with outside air through the outside air suction valve, sufficient outside air can be instantly sucked in to prevent negative pressure inside the container, which also prevents continuous spraying. There is no.

Further, since the outside air intake valve is opened only when the trigger is pulled, and is closed when the trigger is not pulled, the liquid inside the container will not leak even if the sprayer falls over.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of the sprayer of the present invention, and FIG. 2 is a longitudinal sectional view of the sprayer showing a different embodiment. 13...Trigger 24...Outside air inlet cylinder, 29...Outside air intake valve.

Claims (1)

[Scope of utility model registration request] A mounting means 5 is attached to the lower end of the upright cylinder 4, and an injection cylinder 6 is attached to the upper end of the upright cylinder, and a cylinder 7 communicating with the inside of the upright cylinder is connected to the front from the lower part of the injection cylinder of the upright cylinder. The above-mentioned attachment part is attached to the mouth and neck part of the container body 1, and a suction pipe 12 is vertically installed inside the container body through a suction valve 11 from the bottom wall of the upright cylinder part, A trigger 13 is vertically mounted on the injection cylinder, and the front end of a piston rod 15 protruding from the piston 14 fitted into the cylinder is engaged with the middle part of the trigger. In a trigger set nebulizer designed to suck up and atomize body fluids,
An outside air inflow cylinder 24 communicating with the inside of the container body is projected forward from the upright cylinder part, and a valve hole 26 bored in the front end wall of the cylinder is inserted into the outside air inflow cylinder in a forward biased state. An outside air intake valve 29 consisting of a valve body 28 installed inside is provided,
Further, a valve hole is loosely inserted from the valve body, and a valve stem 27 is made to protrude forward, and when the trigger is pulled, the outside air intake valve can be opened by pushing the trigger into contact with the valve stem. Complete trigger sprayer.