JPH0634853Y2 - Depressing head for liquid ejector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a push-down head used in a liquid ejector such as a small sprayer of a manual type or a foaming device.

"Prior Art" In the liquid ejector, a downward pushing head with a nozzle having an inverted L-shaped nozzle is provided at the upper end of the stem by inserting a lower part from a cylinder that is normally hung inside a container body to insert a lower part into the cylinder. By vertically moving an operating member composed of the push-down head and the stem with respect to the cylinder, the liquid in the container is sucked into the cylinder, and the liquid in the cylinder is passed from the nozzle through the stem. It's gushing. Further, in the above-mentioned push-down head, the nozzle is projected forward from the upper end portion of the fitting cylinder portion whose upper surface is closed to be fitted to the outer surface of the upper end portion of the stem, and the upper surface of the fitting cylinder portion is formed into a flat finger contact portion. There is.

"Problems that the device is trying to solve" Conventional push-down heads always have a hole at the tip of the nozzle.
Therefore, there is a drawback that dust or the like adheres to the opening portion, or the liquid remaining on the inner surface of the nozzle hole comes into contact with the outside air and is crystallized by drying, so that clogging is likely to occur. In order to eliminate such a defect, it is possible to fit a palate on the tip of the nozzle, but it is troublesome to attach and detach the palate.

In this plan, an auxiliary member with a cover plate is attached to the pressing head,
By forming the upper surface of the top wall of the auxiliary member on the finger contact surface and pushing down the finger contact surface, the lid plate that closes the front end surface of the nozzle is opened before the head body is lowered, and at the same time when the finger is released from the finger contact surface. Again, the cover plate is provided so as to automatically close the front end face of the nozzle to eliminate the above-mentioned drawback.

"Means for Solving Problems" Head main body 14 for projecting nozzle 13 forward from the upper end of fitting cylinder portion 12 with an upper surface closed for fitting to the outer surface of the upper end portion of stem 9, and said head main body Is integrally molded with the upper wall of the fitting tubular portion with a gap between it and the upper outer surface of the fitting tubular portion, and the tubular wall portion above the nozzle is provided with a notch 20 and below the notch. An outer cylinder 19 whose cylinder wall portion is continuous with the side surface of the nozzle, a coil spring 21 placed on the upper surface of the top wall of the fitting cylinder portion, and a second top wall 22 whose upper end serves as a finger contact surface. The peripheral wall 23 that abuts on the lower surface and hangs down from the second top wall peripheral edge is fitted to the upper inner surface of the outer cylinder 19, and the cutout 20 portion is formed from the front lower end edge of the peripheral wall 23 through the bending portion 25. Project the projection plate 26 forward, and hang the lid plate 27 that closes the front end face of the nozzle from the front end of the projection plate. By the auxiliary member 31 which descends, by pushing the auxiliary member 31 against the elasticity of the coil spring 21 to a part of the engagement plate 29 and a part of the nozzle 13 that hang down from the overhang plate 26. , Overhanging plate with lid plate centering on the bending section 25
26 is provided with engaging means for rotating to open the front end face of the nozzle,
In addition, protrusions 19a, 24 are provided on the inner circumference of the upper end of the outer cylinder and the outer circumference of the peripheral wall 23 so as to engage with each other and prevent the auxiliary member from being pulled out.

"Operation" From the state shown in FIG. 1, when the finger contact surface on the upper surface of the second top wall 22 of the auxiliary member 31 is pushed down, the spring 21 is compressed and descends, so that the bending portion 25 extends to the center with the cover plate 27. The plate 26 rotates to open the front end surface of the nozzle 13 as shown in FIG. When the cylinder 4 is pushed down from the state shown in FIG.
It jets from the tip of the nozzle 13 through the inside and the head body 14. When the push-down is released, the urged stem 9 rises to suck the liquid in the container body 1 into the cylinder, and the auxiliary member 31 rises due to the restoration of the spring 21, and the cover plate 27 of FIG. Thus, the front end face of the nozzle is closed.

[Embodiment] First, a liquid ejector in which the pressing head of the present invention is used will be briefly described. Reference numeral 1 is a container body in which an outward flange 5 of a cylinder 4 is placed on an upper neck surface of a mouth 2 of the container via a packing 3. ing. The cylinder 4 is suspended into the container body 1 by mounting the outward flange, and the suction pipe 6 is suspended from the lower end of the cylinder 4. The lower half of the mounting cylinder 7 is screwed onto the outer surface of the mouth / neck portion 2, and the outward flange 5 of the cylinder is sandwiched between the inward flange 8 attached to the middle of the mounting cylinder and the mouth / neck portion. .

The lower part of the stem 9 is inserted into the cylinder, and the upper part of the stem is projected upward. A push-down head with a nozzle is fitted on the upper end of the stem.

The push-down head 11 according to the present invention includes a nozzle 13 from the upper end portion of a fitting cylinder portion 12 with an upper surface closed for fitting to the outer surface of the upper end portion of the stem 9.
Has a main body 14 protruding upward. In the illustrated example, a short cylinder portion 15 is erected from the top wall of the fitting cylinder portion, and a guide 17 having lateral grooves 16, 16 in the front and rear directions on the upper and lower surfaces of the nozzle 13 is formed on both left and right side surfaces as shown in FIG. Is standing up.

An outer cylinder 19 is integrally formed with the head body 14 via a connecting portion 18. The outer cylinder is surrounded by a cylinder wall with a gap between it and the upper outer surface of the fitting cylinder part 12, and the cylinder wall portion above the nozzle is cut out 20, and below the cutout portion the cylinder wall and the nozzle are formed. Continue to the side. The upper end of the outer cylinder 19 is made to project above the upper surface of the fitting cylinder part 12, and a ridge 19a is attached to the inner edge of the upper end.

A coil spring (21) is placed on the top wall of the fitting cylinder part (12).

A peripheral wall 23, which hangs from a second top wall 22 with the upper end of the spring 21 abutting against the lower surface, is fitted in the upper portion of the outer cylinder 19 so as to be vertically movable. The protrusion 19a is formed on the outer surface of the lower end of the peripheral wall.
Of the peripheral wall 23 is protruded forward from the lower end edge of the front portion of the peripheral wall 23 through the thin bending portion 25, and the front end surface of the nozzle 13 is extended from the front end of the protruding plate. A cover plate 27 that closes up is vertically provided. In the illustrated example, side plates 28, 28 covering both side surfaces of the nozzle are vertically provided from both sides of the overhanging plate so that the front end of the side plate and both sides of the cover plate are continuous. Also, a pair of left and right engaging plates 29, 29 is hung from the lower surface of the overhanging plate 26, and pins 30, 30 attached to the inner surface of the lower end rear portion of the engaging plates are slidably engaged in the lateral grooves 16, 16 described above. As shown in FIG. 2, when the auxiliary member 31 is pushed down against the elasticity of the coil spring 21, the pin 3
0,30 is an overhanging plate with the lid plate 27 by being pushed forward of the lateral groove
26 is formed so as to be rotatable around the bending portion 25. The auxiliary member 31 includes the second top wall 22, the peripheral wall 23, and the overhanging plate 26 with a cover plate.
And so on.

[Advantage of Invention] Since the present invention has the above-described configuration, the lid plate 27 does not open the nozzle front end surface unless the pressing head is pushed down, and therefore dust or the like does not adhere to the nozzle front end. The nozzle holes can be prevented from being clogged, and when the head is pushed down, the lid plate automatically opens prior to the stem lowering, so there is no problem when ejecting the liquid.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a vertical sectional view of a pressing head of the present invention shown in a state where a liquid ejector is attached, and FIG. 2 is a vertical sectional view showing an auxiliary member in a lowered state.
FIG. 3 is an exploded perspective view of the pressing head, FIG. 4 is a perspective view of the pressing head, FIG. 5 is a plan view of the head, and FIG. 6 is a perspective view showing a part of the auxiliary member cut away. 14 ... Head body, 19 ... Outer cylinder 31 ... Auxiliary member

Claims (1)

[Scope of utility model registration request] 1. A stem 9 for fitting to an outer surface of an upper end portion,
Between the upper end of the fitting cylinder part 12 with the upper surface closed, the head main body 14 projecting the nozzle 13 forward, and the head main body 14 and the connecting part 18, which are integrally formed, and between the upper outer surface of the fitting cylinder part. An outer cylinder 19 which is surrounded by a cylinder wall with a gap between the cylinder wall and a notch 20 in the cylinder wall above the nozzle, and the cylinder wall below the notch is continuous with the nozzle side surface, and the top wall of the fitting cylinder. A coil spring 21 placed on the upper surface and a peripheral wall 23, which abuts the upper end of the spring with the lower surface of the second top wall 22 having the upper surface as a finger contact surface and hangs from the peripheral edge of the second top wall, of the outer cylinder 19. While being fitted to the inner surface of the upper part, the projecting plate 26 is projected forward from the lower end edge of the front part of the peripheral wall 23 through the notch 20 part through the bending part 25, and the nozzle front end face is closed from the projecting plate front end. And an auxiliary member 31 that hangs the cover plate 27 that
To a part of the engaging plate 29 and a part of the nozzle 13 hanging from
By pushing down the auxiliary member 31 against the elasticity of the coil spring 21, an overhanging plate 26 with a lid plate is rotated around the bending portion 25 to provide an engaging means for opening the front end face of the nozzle, And on the inner circumference of the outer cylinder upper end and the outer circumference of the peripheral wall 23,
Protrusions 19a, 24 that engage with each other to prevent the auxiliary member from being pulled out
A push-down head for ejecting liquid, characterized by being equipped with.