JPH105641A - Liquid discharger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a head-down-stroke type liquid discharger to keep holding down-stroked-head state and to prevent liquid such as hot water from flowing an a vessel. SOLUTION: An intermediate portion of a stem 20 is inserted through and vertically slidably with watertightness. A stem female pipe 25 is fitted into an upper end of a cylinder 3. A male screw pipe 29 is mounted downward on the lower end of stem 20, screwed on a female screw 30 formed on an inside surface of the lower portion of cylinder 3 by pressing a moving member 18 downward against the using force.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head-down type liquid ejector.

[0002]

[Prior art]

As this type of liquid ejector, for example, the ejector disclosed in Japanese Utility Model Laid-Open Publication No. 64-25366 is known. The dispenser raises a stem from a cylindrical piston fitted in a cylinder, and urges an operating member having a head with a nozzle attached to the upper end of the stem upward, and also urges the operating member. It is provided so as to hold the head pressed down by screwing the male screw formed on the upper outer surface of the stem into the inner surface of the female screw cylinder fitted to the upper part of the cylinder by pressing it down against it. I have.

[0003] However, in the above-mentioned conventional discharger, when the upper portion of the stem is unscrewed from the female screw cylinder and the head is lifted, a gap is formed between the inner surface of the female screw of the female screw tube and the outer surface of the stem. In such a case, there is a risk that hot water flows into the container through the gap and the stored liquid is diluted.

Such a fear can be eliminated by, for example, a discharger having a structure shown in FIGS. The ejector stands up from the upper surface of the flange-like top wall 42 of the stem engaging cylinder 41 instead of the female screw cylinder, which is fitted on the upper outer surface of the cylinder 40, and raises the male screw cylinder 43, as shown in FIG. Next, the outer surface of the intermediate portion of the stem 44 is fitted to the inner surface of the male screw tube portion in a watertight manner, and the male screw tube portion 43 is attached to the female screw tube portion 46 vertically provided from the lower surface of the head 45. As shown, the head 45 is formed so as to be screwed by pushing down. However, the discharger has another problem, and in the above-described conventional example, a female screw tube portion for screwing a stem is vertically provided from the inner peripheral edge of the flange-shaped top wall 42 of the discharger to the upper part in the cylinder. On the other hand, in the discharger, since the male screw cylinder 43 is erected from the inner peripheral edge of the flange-shaped top wall 42 instead of suspending the female screw cylinder, the male screw cylinder is compared with the conventional example. As a result of the provision of the portion 43, the head 45 is positioned upward, and the container on which the discharger is mounted is slightly bulky.

[0005] The present invention is provided so that the liquid can be prevented from flowing into the container and is not bulky as compared with the discharger shown in Figs.

[0006]

Means for Solving the Problems A cylinder and an operating member which erects a stem from a cylindrical piston fitted in the cylinder, and which is urged upward by mounting a head with a nozzle on the upper end of the stem. In a liquid ejector forming a vertical pump,

The middle portion of the stem 20 is vertically slidably and watertightly inserted, and a stem engagement cylinder 25 is fitted to the upper end of the cylinder 3.

Further, a male screw cylinder 29 is inserted from the lower end of the stem 20.
The male screw cylinder was screwed into the female screw 30 formed on the inner surface of the lower part of the cylinder 3 by pushing down the operating member 18 against the bias.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the outline of the present embodiment will be described. 3 is
It is a cylinder that forms a vertical pump with an operating member 18 described later. The cylinder engages the lower surface of an outward flange 4 provided at the upper part with the upper end surface of the container body 1 mouth and neck portion 2 so that the inside of the container body 1 can be formed. A downwardly tapered valve seat 5 vertically suspended at the upper portion and attached to the bottom portion, and a first spring 6 seated on the upper surface of the valve seat and supported on the lower surface of a cylindrical body 14 to be described later, the lower end of which is supported by a first spring 6. The suction valve 8 is formed by the urged cylindrical valve body 7, a plurality of vertical plate portions 9 are provided on the inner surface of the cylinder portion immediately above the valve seat 5, and the cylinder immediately below the outward flange 4 is further provided. An intake hole 10 is formed in the portion.

Reference numeral 12 denotes a mounting cylinder, which is screwed to the outer surface of the container body neck and neck portion 2 and has an inward flange 13 below the upper end thereof and an upper end surface of the container body mouth and neck portion 2. Thus, the outward flange 4 of the cylinder 3 is sandwiched.

Reference numeral 14 denotes a cylindrical body. The cylindrical body has a lower end surface of a base cylinder portion 15 placed on an upper end surface of the vertical plate portion 9 of the cylinder 3 and an outer surface of a lower end portion of the base cylinder portion. The bottom plate is fitted on the inner surface of the cylinder portion immediately above the vertical plate portion 9, and a plurality of support columns 16 are erected from the inner surface of the base cylinder portion 15 at substantially equal intervals, and are provided at the upper ends of the support columns. The outer surface of the stopper tube 17 is fitted to the inner surface of the lower end portion of the stem 20 to be described later. The upper end of the first spring 6 is locked in the groove formed.

Reference numeral 18 denotes an operating member, which comprises a cylindrical piston 19 fitted into the cylinder 3 and a stem 20.
And a head with a nozzle 21 at the upper end of the stem
The discharge valve 23 is formed by a ball valve in the upper part of the stem 20 and the upper end surface of the base part 15 of the cylindrical body 14 and the downward step part provided in the lower inner part of the stem 20 are attached. It is urged upward by a second spring 24 provided therebetween.

In the present invention, a stem engaging cylinder 25 is fitted to the cylinder above the outward flange 4. As shown in FIG. 2, the stem engaging cylinder vents the middle portion of the stem 20 from the upper end of the outer cylinder portion 27 for fitting the cylinder through the flanged top wall 26 into the inner cylindrical portion 28 which is vertically provided. And an outer surface of an intermediate cylindrical portion vertically suspended from a lower surface of the flange-shaped top wall 26 is fitted to an inner surface of an upper portion of the cylinder 3, and The stem engaging cylinder 25 is rotated with respect to the cylinder 3 by engaging the vertical groove and the vertical projection formed respectively on the upper outer surface of the cylinder and the inner surface of the cylinder above the outward flange 4. Has been blocked.

From the lower end of the stem 20, a male screw cylinder 29 having a thread provided on the lower outer surface is vertically provided, and the operating member 18 is biased from the state shown in FIG. 2 to the state shown in FIG. By pressing down, the male screw cylinder 29 is screwed into the female screw 30 formed on the inner surface of the lower part of the cylinder 3 so that the head 22 is kept pressed down.

The container of this embodiment is used by screwing the lower part of the male screw cylinder 29 from the female screw 30 from the state shown in FIG. 2, the outside air is between the outer surface of the intermediate portion of the stem 20 and the inner surface of the inner cylinder portion 28 of the stem engagement cylinder 25, and the cylindrical piston 19
The problem is solved by flowing into the container body 1 through the upper part in the upper cylinder 3 and the intake hole 10.

[0016]

According to the present invention, the male screw cylinder 29 erected from the lower end of the stem 20 is urged to the female screw 30 formed on the lower inner surface of the cylinder 3 by urging the operating member 18. Since the screw is engaged by pressing down, the head 22 can be kept pressed down, and the stem engagement tube 25 can be held down.
By inserting the middle part of the stem 20 in a watertight manner,
The liquid can be prevented from flowing into the container 1. That is,
In the conventional example described above, a female screw cylinder is vertically provided from the inner peripheral edge of the flange-shaped top wall 26 of the stem engaging cylinder 25 according to the present invention, and the upper outer surface of the stem is screwed to the female screw cylinder. Although there is a possibility that hot water or the like flows into the container body 1 due to a gap between the screw and the outer surface of the stem, in the present invention, the female screw 30 is formed on the lower inner surface of the cylinder 3 and the male screw cylinder 29 is formed. Is suspended from the lower end of the stem 20, the intermediate portion of the stem 20 can be inserted through the stem engaging cylinder 25 in a water-tight manner, and therefore, the liquid can be prevented from flowing into the container body 1 as described above. . Further, a male screw cylinder 29 is vertically provided from the lower end of the stem 20 and a female screw
Since the lower portion 30 is formed on the inner surface of the lower portion of the cylinder 3, the discharge device shown in FIGS. 3 and 4, that is, the discharge device in which the male screw cylinder portion 43 stands up from the inner peripheral edge of the flange-like top wall 42, There is no problem that the position becomes high and bulky.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the discharger of the present invention in a state where an operating member is pressed down.

FIG. 2 is a longitudinal sectional view showing the same embodiment in an ascending state of an operation member.

FIG. 3 is a longitudinal sectional view showing a reference discharger in a state where an operating member is pushed down.

FIG. 4 is a longitudinal sectional view showing the discharger in a state where an operation member is raised.

[Explanation of symbols]

 29 ... male screw cylinder 30 ... female screw

Claims (1)

[Claims] A vertical pump is constituted by a cylinder and an operating member which is erected upward from a cylindrical piston fitted in the cylinder, wherein the stem is erected from a cylindrical piston, and a head with a nozzle is mounted on the upper end of the stem. In the formed liquid ejector, a stem engaging cylinder 25 is fitted to an upper end of the cylinder 3 by vertically and slidably inserting an intermediate portion of the stem 20 in a watertight manner. A screw cylinder 29 is vertically provided, and the male screw cylinder is screwed to a female screw 30 formed on the lower inner surface of the cylinder 3 by pressing down the operating member 18 against urging. Liquid ejector.