JPS641014Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention involves fitting a foamer foam generating cap to the outer surface of the nozzle of a conventionally known trigger-type sprayer, so that when the trigger is operated, the mist is foamed and the above-mentioned It is designed to be released from the mouth on the front of the cap.

``Prior Art'' As a trigger-type foamer foam ejector, for example, as shown in Utility Model Publication No. 8344/1983, there is a foamer that can foam the mist ejected from the nozzle of a conventionally known trigger-type sprayer. It is known that a foam generating cap is fitted.

``Problems to be solved by the invention'' The foamer foam generation cap used in conventional trigger-type foam ejectors has, for example, a rear half of the outer circumferential wall screwed onto the outer surface of the spray nozzle, and a front end of the outer circumferential wall. The inner circumferential wall is made to protrude rearward from the inner circumferential edge of the inward flange attached to the inward flange, and the rear end surface of the inner circumferential wall is butted against the front end surface of the spray nozzle with the spray hole located at the center. A through hole or groove is provided at the rear end of the inner peripheral wall, and a large amount of outside air is supplied from the spray hole opening into the inner peripheral wall through the through hole or groove and the space between the inner and outer peripheral walls. ,
The supply is provided so that the mist is foamed.

The foamer cap for generating bubbles is integrally molded from a synthetic resin material, but during molding, it is troublesome to form through holes or grooves for supplying outside air at the rear end of the inner circumferential wall, resulting in high costs.

This proposal eliminates this drawback.

"Means for solving the problem" By fitting the foamer foam generation cap 25 to the front outer surface of the spray nozzle 7 of the trigger-type sprayer, a hole is formed in the center of the front end surface of the nozzle 7. In the trigger-type foam ejector, the spray nozzle 7 is provided in a trigger-type foam ejector that is capable of foaming the mist ejected forward from the spray hole 10 within the foamer foam generating cap and ejecting the foamer foam from an opening in the front wall 27 of the cap. A groove 30 for forming an outside air intake hole is formed on the front end surface of the
A plurality of holes were drilled in the radial direction around the spray hole 10.

"Function" The outside air for foaming the ejected mist is supplied to the front surface of the top wall 9 of the nozzle cap of the spray nozzle through radial grooves 30 formed around the spray hole 10...
It can be supplied through the inner peripheral wall, and a groove in the rear end surface of the inner peripheral wall can be made unnecessary.

``Example'' To explain the drawings below, 1 shows the entire trigger-type foamer foam discharger, 2 is a body containing a vertical plunger-type pump mechanism, 3 is a trigger, 4 is a discharge pipe, and 5 is a The nozzle 6 is a liquid storage container body equipped with a foamer foam ejector. The overall structure of the ejector is the same as that of the already widely known trigger type sprayer, and the nozzle 5
You only need to improve it.

The illustrated example shows a foamer foam generating cap 2 attached to the nozzle of a trigger-type sprayer that the applicant has already applied for.
First, for convenience of explanation, the trigger-type sprayer will be described.A spray nozzle 7 is attached to the front end of the discharge pipe 4. The spray nozzle is
A cylindrical portion 8 having a larger inner diameter than the discharge pipe hole protrudes from the front end of the discharge pipe, and a spray nozzle cap 11 having a spray hole 10 at the center of the top wall 9 is fitted to the tip of the cylindrical portion. A discharge valve forming member 12 with a spin mechanism is attached and formed inside the section. The discharge valve forming member has an elastically deformable ring part 13 in the middle part, and connecting pieces 14, 14 are connected from both the front and back sides of the ring part 13.
protrudes, and a base plate 15 and a discharge valve plate 16 are attached to the tip thereof.
and a guide rod 1 from the center of the discharge valve plate.
7 is projected to allow the guide rod to be loosely inserted into the discharge pipe hole 4a. A packing 18 is attached to the rear surface of the discharge valve plate 16, and a discharge valve 20 is formed by pressing the packing against a valve seat 19 formed by the difference in diameter between the discharge pipe hole and the inner diameter of the cylindrical portion 8. Base plate 15
Swirl groove 21 as a spin mechanism that can give rotation to the passing liquid from the rear end of the side surface to the center of the front surface.
is provided. Since the front surface of the base plate is brought into pressure contact with the rear surface of the top wall 9 of the spray nozzle cap, the high-pressure liquid that has entered the cylinder part 8 through the discharge valve 20 passes through the spiral groove 21 and rotates while the spray hole 10 The liquid is ejected from the air and becomes atomized.

In the above configuration, when the trigger 3 is pulled, the liquid inside the pump is raised to a high pressure due to the descent of the plunger, and the liquid in the pump is pushed against the elasticity of the ring part 13 into the discharge valve 2.
0 is opened and enters the cylindrical portion 8 of the spray nozzle, and the high-pressure liquid that has entered the cylindrical portion is further jetted out through the spiral groove and the spray hole as described above. When the trigger is fully pulled and the plunger approaches the lower limit, the discharge valve is closed by the elasticity of the ring, and when the trigger is released, the plunger is raised by the built-in spring and discharged into the cylinder via the suction valve. The internal fluid in the container is sucked in, and the trigger 3 returns to its original position to prepare for the next spraying operation.

In order to use the trigger type sprayer having the above configuration as a trigger type foamer foam discharger, the foamer foam generation cap 25 is attached to the spray nozzle 7 as described above.
mate. The cap has an outer peripheral wall 26 that can be screwed onto the outer peripheral surface of the spray nozzle 7 and projects rearward from the peripheral edge of the front wall 27, and a hole is formed in the center of the front wall, and an inner peripheral wall 28 extends from the edge of the opening. It is protruded to the rear. The inner circumferential wall hole 29, which is open at both front and rear ends, forms the front part of the nozzle hole 32 of the foamer foam ejector, as will be described later. The inner circumferential wall is shorter than the outer circumferential wall, and an appropriate gap is provided between the inner circumferential wall and the outer circumferential wall, and an appropriate number of through holes 31 are bored in the front wall portion in front of the gap. be.
A groove 3 is formed on the front surface of the top wall 9 of the spray nozzle cap with which the rear end surface of the inner circumferential wall is in contact, with the spray hole 10 at the center.
A plurality of 0... are provided in the radial direction.

Outer peripheral wall 26 of foamer foam generation cap 25
When screwed onto the spray nozzle 7 and tightened,
The rear end surface of the inner peripheral wall is the top wall 9 of the spray nozzle cap.
It is assumed that the spray hole 10 opens into the inner circumferential wall hole 29. The groove 30 in the top wall of the spray nozzle cap forms an outside air supply hole when the top wall 9 of the spray nozzle cap and the rear end surface of the inner peripheral wall come into contact with each other.

When trigger 3 is pulled in the above configuration,
As described above, the mist is sprayed from the spray hole 10, but since the mist tries to pass through the inner circumferential wall hole 29, the pressure inside the inner circumferential wall hole becomes negative at this time, and therefore, the mist is mixed with the outside air entering from the outside air intake hole. The mixture becomes foamer foam, which is discharged from the front end of the inner peripheral wall hole.

``Effect of the invention'' As mentioned above, this invention has multiple outside air supply channels for foaming the mist in the trigger-type foamer foam discharger on the front end surface of the spray nozzle in the radial direction around the spray hole. Since the groove 30 is formed by drilling the groove 30, the workability is much better than the case where a groove or a through hole is bored in the rear part of the inner peripheral wall located inside the outer peripheral wall 26 of the foamer foam generating cap. , efficiency can be improved.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of the foamer foam ejector of the present invention, and FIG. 2 is an enlarged sectional view of the nozzle thereof. 7... Nozzle for spraying, 25... Cap for foamer foam generation, 30... Groove for forming outside air suction holes.

Claims (1)

[Scope of utility model registration request] By fitting the foamer foam generation cap 25 to the front outer surface of the spray nozzle 7 of the trigger-type sprayer, mist is sprayed forward from the spray hole 10 drilled in the center of the front end surface of the nozzle 7. In the trigger-type foam ejector, the foamer foam is formed into foam in the foamer foam generating cap, and the foamer foam is spouted from the opening in the front wall 27 of the cap. groove 30,
A trigger type foamer foam discharger characterized in that a plurality of holes are formed in a radial direction around the spray hole 10.