JP3670082B2 - Liquid dispensing pump - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid dispensing pump.
[0002]
[Prior art]
For example, in a liquid discharge container described in Japanese Utility Model Laid-Open No. 1-179760, a cylinder is formed by engaging an outward flange attached to the upper part with an inward flange lower surface at the upper end of a mounting cylinder to be fitted to the outer surface of a container body neck. The actuating member is suspended from the inside of the cylinder by urging the actuating member having a pressing head with a nozzle at its upper end upwardly, and a member with a screw tube is fitted to the upper end of the cylinder. There has been disclosed a liquid dispensing pump that is pushed down against an urging force, and a screw portion provided at a lower portion of a pushing head is screwed to a member with a screw cylinder.
[0003]
[Problems to be solved by the invention]
The liquid pouring pump has an advantage that the pressing head is pressed down and not bulky by screwing a screw part provided at the lower part of the pressing head with a screwed member. By the way, in the liquid discharge container using this liquid dispensing pump, the liquid in the container is discharged from the nozzle when the press-down head is moved up and down by releasing the screwing between the press-down head and the screwed member. In addition, the exposed part of the liquid dispensing pump and the entire container should be shrink-packed with synthetic resin film to prevent the push head from moving up and down during transportation and storage, and to indicate that it is not used. Yes. However, the above-mentioned shrink pack requires a raw material cost, requires equipment for that purpose, and removes the film with some trouble.
[0004]
SUMMARY OF THE INVENTION An object of the present invention is to provide a liquid dispensing pump that can indicate that it has not been used without special packaging such as a shrink pack and can be easily opened.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, in the present invention, the cylinder 2 is fitted by engaging the outward flange 3 attached to the upper portion with the lower surface of the inward flange 5 at the upper end of the mounting cylinder 4 fitted to the outer surface of the container body neck. From the inside of the cylinder, the operation member 33 having a pressing head 32 with a nozzle 31 at the upper end is urged upward to stand up, and the screwed member 23 is fitted to the upper end of the cylinder. In the liquid dispensing pump in which the actuating member 33 is pushed down against urging, and the screw portion provided at the lower portion of the pushing head 32 is screwed into the screwed member 23.
The screwed member 23 is a multiple cylinder that hangs a plurality of cylindrical portions from the lower surface of the flange-like top plate 24, and a plurality of breakers 40 are formed from the outer periphery of the lower end of the outer cylinder 25 portion fitted to the outer surface of the cylinder upper end. Through which the connecting plate 41 protrudes outward, and the engaging plate 43 protrudes downward and inward from the upper inner surface of the surrounding tube 42 raised from the tip of the connecting plate,
Also, an engaging ridge 45 having an outer diameter larger than the inner diameter of the lower end of the engaging plate 43 at the lower outer edge of the peripheral wall 38 suspended from the outer periphery of the top plate of the pressing head 32 between the outer cylinder 25 and the surrounding cylinder 42. And the upper surface of the engagement protrusion is brought into contact with or close to the lower end surface of the engagement plate 43 ,
When the pressing head 32 is unscrewed from the screwed member 23, the engaging protrusion 45 and the engaging plate 43 are engaged, and the surrounding tube 42 and the connecting plate 41 are pulled up, and the breaker 40 is It was formed to be breakable.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
1 to 3 show a first embodiment of a liquid dispensing pump 1 of the present invention. First, a conventionally known structure will be briefly described. Reference numeral 2 denotes a cylinder, and the cylinder is suspended in the container body by placing an outward flange 3 attached to the upper part on the upper surface of the container neck. When the mounting cylinder 4 is screwed onto the outer surface of the container body neck, the outward flange 3 is sandwiched between the inward flange 5 of the mounting cylinder and the container neck of the container body. It comes to be fixed to the container body. Further, a ridge is provided around the upper outer surface of the upper end portion 6 of the cylinder standing up from the upper surface of the inner peripheral portion of the outward flange 3, and the ridge is provided vertically on the inner surface, and the upper portion of the cylinder 2 below the outward flange 3. Is provided with an outside air introduction hole 7.
[0007]
The cylinder 2 has a pipe fitting cylinder 11 that hangs a suction pipe on the lower end of a tapered pipe 10 that has a small diameter on the inner surface as a valve seat. A known ball valve 12 is placed on the upper surface of the part, and a suction valve 13 is formed on the inner surface of the lower end part. In the illustrated example, a plurality of regulating plates 14 are formed on the inner surface of the lower part of the cylinder above the tapered cylinder 10 at substantially equal intervals.
[0008]
A plug member 15 is fitted into the lower part of the cylinder. The plug cylinder member has a short cylinder 16 having an outer surface fitted to an inner surface of each regulating plate 14 with a lower end surface in contact with the upward stepped portion, and a plurality of support plates 17 are formed from the inner surface of the short cylinder. Standing up at almost equal intervals, a bottomed plug 18 is provided at the upper end of the support plate. Each of the support plates 17 hangs down from the bottom plate of the plug cylinder and is connected by a rib that intersects in a cross-shaped cross section or the like, and a first spring 19 is mounted in a concave groove provided on the lower surface of the rib, The first spring urges the ball valve 12 downward and presses against the tapered cylinder 10.
[0009]
A screwed member 23 is fitted to the cylinder upper end 6. The screwed member is a multiple cylinder that hangs a plurality of cylindrical portions from the lower surface of the flange-like top plate 24, and the outer cylinder 25 from the outer periphery of the flange-like top plate 24, and the inner cylinder 26 from the inner periphery of the flange-like top plate 24, Further, an intermediate cylinder 27 is suspended from a flange-like top plate portion between the inner cylinder and the outer cylinder 25, respectively. The outer cylinder 25 has a male thread 28 formed on the outer surface, and a groove on the inner surface. The outer surface of the cylinder upper end 6 is fitted into the groove on the outer surface of the cylinder upper end 6. The mating is impossible. Further, the middle cylinder 27 is provided with a vertical groove on the upper outer surface, and is fitted to the inner surface of the cylinder upper end portion 6 in a non-rotatable manner with the protrusion on the inner surface of the cylinder upper end portion 6 fitted in the concave groove. doing. The inner cylinder 26 hangs into the upper part of the cylinder 2 with its inner surface slidably contacting an outer surface of an operating member, which will be described later.
[0010]
From the inside of the cylinder 2, an operating member 33 in which a pressing head 32 with a nozzle 31 is fitted on the upper end of the stem 30 is urged upward by a second spring 34 placed on the upper surface of the short cylinder 16 of the plug cylinder member. Let stand up. As shown in FIG. 1, the stem 30 is provided with a discharge valve 35 on the upper inner surface, and a cylindrical piston 36 is integrally formed at the lower end. The cylindrical piston is fitted to the inner surface of the cylinder 2 so that the outer peripheral edge thereof is airtight and freely movable up and down. The pressing head 32 hangs down from the outer periphery of the top plate on a peripheral wall 38 in which a female screw as a threaded portion 37 is formed on the lower inner surface. Thus, in a state where the pressing head 32 is pressed against the urging force, the screw portion 37 of the pressing head 32 can be screwed to the screwed member 23, and at the time of the screwing, the operating member 33 is maintained in a state where it is pushed into the cylinder 2 as shown in FIG.
[0011]
In the present invention, the connecting plate 41 protrudes outward from the outer periphery of the lower end of the outer tube 25 of the member with the screw tube described above via a plurality of thinned breakers 40, and the surrounding standing up from the tip of the connecting plate. The engagement plate 43 protrudes downward and inward from the upper inner surface of the cylinder 42 at substantially equal intervals. As shown in FIG. 3, the connecting plate 41 may be a pin-shaped connecting piece or a flange-shaped plate.
[0012]
Further, as shown in FIG. 1, the lower wall of the peripheral wall 38 of the pressing head described above is suspended between the outer cylinder 25 and the surrounding cylinder 42 as shown in FIG. 1. An engaging protrusion 45 having an outer diameter larger than the inner diameter of the lower end of the engagement plate 43 is provided around the lower end outer edge of the peripheral wall, and the upper surface of the engagement protrusion 45 is the lower end surface of the engagement plate 43. It is not in contact with or located close to the lower end surface.
[0013]
Hereinafter, the operation member screwing of the liquid dispensing pump 1 will be described. In FIG. 1 showing a state in which the push-down head 32 is pushed down and the screw portion 37 of the push-down head and the male screw 28 of the screw-cylinder member are screwed together, It is in contact with the lower end of the engagement plate 43 of the surrounding cylinder. When the push-down head 32 is rotated from this state and is raised with respect to the member 23 with the screw tube, the engagement protrusion 45 pushes up the engagement plate 43, and by this push-up, the surrounding tube 42 and the connection plate 41 is pulled up, and the breakers 40 are broken. When the pressing head 32 is further rotated, the screwing of the pressing head 32 and the screwed member 23 is released, and the actuating member 33 is urged upward. Ascend to the position shown.
[0014]
4 and 5 show a second embodiment of the liquid dispensing pump of the present invention. In addition, since the structure of this embodiment is substantially the same as that of the said 1st Embodiment, only a different part is demonstrated using the same code | symbol to the same member. In the present embodiment, the member 23 with a screw cylinder is a double cylinder formed of an inner cylinder 25 and an outer cylinder 25, the outer cylinder 25 cannot be pulled out to the outer surface of the cylinder upper end 6, and the inner cylinder 26 is the cylinder upper end. 6 are respectively fitted to the inner surface of the inner cylinder 26 in a non-rotatable manner, and a female screw 50 is formed on the inner surface of the inner cylinder 26 to replace the male screw 28 of the first embodiment. A male screw serving as a threaded portion 51 provided at the lower part of the pressing head to be screwed to is formed on the outer surface of the lower part of the connecting cylinder portion 52 that hangs down from the center of the pressing head top plate. The connecting tube portion 52 has a lower end tube portion that is airtightly fitted to the outer surface of the upper end portion of the stem 30 and a pressing head 32 is fitted to the upper end of the stem 30, and the upper end tube portion communicates with the nozzle 31. doing. According to this configuration, when the push-down head 32 is pushed down and rotated and the male screw 51 is screwed into the female screw 50, the push-down head 32 is screwed onto the member 23 with the screw tube as shown in FIG. .
[0015]
【The invention's effect】
The present invention has the above-described configuration. The connecting plate 41 protrudes outward from the outer periphery of the lower end of the outer tube 25 portion of the member with a screw tube through a plurality of breakers 40, and the surroundings stand up from the tip of the connecting plate. The engagement plate 43 protrudes from the upper inner surface of the cylinder 42 inward and downward, and the engagement plate is formed on the outer edge of the lower end of the peripheral wall 38 extending from the outer periphery of the top plate of the push-down head 32 to between the outer cylinder 25 and the surrounding cylinder 42. An engagement protrusion 45 having an outer diameter larger than the inner diameter of the lower end of 43 is provided around the engagement member 45 and the engagement plate 45 and the engagement plate 43 are engaged by screwing down the push-down head 32 from the member 23 with a screw tube. Since the surrounding cylinder 42 and the connecting plate 41 are pulled up and the breakers 40 are formed so as to be breakable, when the push-down head 32 is unscrewed from the screwed member 23, the breaker 40 Will be broken, so that it can be displayed as unused. Further, the breakers 40 can be easily broken by unscrewing the pressing head 32 from the screwed member 23, so that the opening can be easily performed.
[Brief description of the drawings]
FIG. 1 is a half sectional view of a liquid dispensing pump showing an unused state.
FIG. 2 is a half cross-sectional view of a liquid dispensing pump showing an opened state.
FIG. 3 is a plan view of a member with a screw cylinder.
FIG. 4 is a half sectional view of another liquid dispensing pump showing an unused state.
5 is a half cross-sectional view of the liquid dispensing pump of FIG. 4 showing an unsealed state.
[Explanation of symbols]
2 cylinders
23 Screwed member
32 Pressing head
40 Breaker
42 Enclosed cylinder

Claims (1)

The cylinder 2 is suspended by engaging the outward flange 3 provided on the upper side with the lower surface of the inward flange 5 at the upper end of the mounting cylinder 4 to be fitted to the outer surface of the container body neck, and the nozzle 31 is attached from the inside of the cylinder. The actuating member 33 having the push-down head 32 at the upper end is urged upward to stand, and the screwed member 23 is fitted to the upper end of the cylinder so that the actuating member 33 is pushed against the urging. In the liquid dispensing pump in which the screw portion provided at the lower part of the lowering head 32 is screwed to the screwed member 23,
The screwed member 23 is a multiple cylinder that hangs a plurality of cylindrical portions from the lower surface of the flange-like top plate 24. Through which the connecting plate 41 protrudes outward, and the engaging plate 43 protrudes downward and inward from the upper inner surface of the surrounding tube 42 raised from the tip of the connecting plate,
Also, an engaging ridge 45 having an outer diameter larger than the inner diameter of the lower end of the engaging plate 43 at the lower outer edge of the peripheral wall 38 suspended from the outer periphery of the top plate of the pressing head 32 to between the outer cylinder 25 and the surrounding cylinder 42. And the upper surface of the engaging ridge is brought into contact with or close to the lower end surface of the engaging plate 43 ,
When the push-down head 32 is unscrewed from the member 23 with the screw tube, the engagement protrusion 45 and the engagement plate 43 are engaged, the surrounding tube 42 and the connection plate 41 are pulled up, and the breaker 40 is A liquid dispensing pump characterized in that it is formed to be ruptureable.

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