JP2003095304A - Nozzle cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assure, in a nozzle cap designed so that a pull-away stopper is pulled away in order to make a nozzle hole in the top wall closing the leading end of a nozzle tube, a steadily safe molding process and a safe, satisfactory use condition by integrally molding the pull-away stopper, which is easily pulled away with fingers, in the structure that prevents burr, etc., remaining after the stopper is pulled away from adversely affecting the application of the contents. SOLUTION: A nozzle tube is erected on the upper end of a fitted tube 2 via a shoulder wall. A recess 8, which is radially open in the upward direction, is formed in the upper face of the upper end of the nozzle tube. A top wall 7, in the middle of which a nozzle hole 9 is made, is continuously formed. The pull-away stopper 10, which seals the nozzle hole 9, is formed so as to be continuous with the edge of the nozzle hole 9 via a thin wall 12. A finger hold 11, which projects from the recess 8 and has a larger diameter, is formed upright at the upper end of the pull-away stopper 10. An elastic deformable portion 13 extends between the fitted tube 2 and the top wall 7. The depth of the recess 8 is set greater than the height of a projection such as a burr remaining after the removal of the pull-away stopper 10. Thus, safe molding and a satisfactory use condition are assured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nozzle cap made of synthetic resin, which is assembled in a bottle container to form a nozzle hole at an extended position, and the nozzle hole is opened by removing a mogiri stopper integrally provided. It is about.

[0002]

2. Description of the Related Art As a technique of this type of nozzle cap, for example, there is a technique disclosed in Japanese Unexamined Patent Application Publication No. 2001-114326. In this technique, the upper end of a nozzle hole located at the upper end of a nozzle cylinder. Since the opening edge is the connection part with the mogiri stopper, the fluff etc. of the mochi removal mark will remain on the upper opening edge of the opened nozzle hole, and when the contents are poured out, the fluff etc. will be on the skin of the scalp etc. There is an inconvenience that it gives an unpleasant feel to the skin or scratches when touched.

As a conventional technique for solving this inconvenience, there is a technique disclosed in Japanese Patent No. 2696236 (JP-A-2-152652). In this conventional technique, the lower end edge of the nozzle hole is connected to a mogiri stopper. Since the moat removal marks are formed on the lower end of the nozzle hole, this prevents the fluff from contacting the skin such as the scalp when the contents are poured out and used. Can be used to pour out the contents comfortably.

In this prior art, it is not possible to form a lateral protruding piece on the mogiri stopper because of the release of the nozzle part including the mogiri stopper from the molding die. Since it is difficult to remove the mogiri stopper with a fingertip, an opening member for removing the mogiri stopper is attached to the mogiri stopper by post-processing.

[0005]

However, in the above-mentioned prior art, since the opening member is attached to the mogiri stopper by post-processing, the work man-hour is increased accordingly, requiring much manpower and time. There was a problem that it would happen.

Further, since the mogiri stopper is integrally formed with the nozzle part through the thin portion which is easily broken, the mogiri stopper is
When an external force acts due to contact with another article or the like, the external force concentrates on the thin portion, which causes the thin portion to be illegally broken.

Further, there is a problem in that when the dispensed contents are applied using the nozzle portion with the nozzle hole opened, the nozzle portion is strongly hit by the scalp or the like to cause an unpleasant feeling. It was

Therefore, the present invention was devised to solve the above-mentioned problems in the prior art. A mogiri stopper which is easy to remove with a fingertip, and a fluff or the like of the removal trace adversely affects the application of the contents. It is a technical object to enable integral molding with a non-existent structure, and it is an object of the present invention to obtain a stable and safe molding process and to obtain a safe and good use condition.

[0009]

[Means for Solving the Problems] [Means for Solving the Problems] Of the present invention for solving the above technical problems, the means for carrying out the invention according to claim 1 has an assembling cylinder which is closely assembled to a bottle mouth cylinder, At the top,
Having a nozzle cylinder erected via an inner collar-shaped shoulder wall, forming a recessed portion that is continuously expanded at the upper end of the nozzle cylinder and has an enlarged diameter on the upper surface, and opened a nozzle hole in the center It has a top wall, a hole edge of the nozzle hole, and a mogiri stopper that is continuously provided in an upright manner through a thin portion that easily breaks and seals the nozzle hole. Also has a large diameter, and has a finger hook portion that is continuously provided in an upright manner so as to project upward from the concave portion of the top wall, and is provided in a portion between the assembling cylinder and the top wall. It has an elastic deformation part that allows the displacement of the top wall side part by elastic deformation, and the depth of the recess on the top wall upper surface is set to a value larger than the protrusion height of fluff etc. That's right.

Since the finger hook portion is integrally provided on the mogiri stopper, the gripping force of the mogiri stopper on the finger hook portion allows the gripping force to be effectively applied to the mogiri stopper without difficulty. The stripping of the plug, that is, the opening of the nozzle hole, can be easily accomplished without the use of tools and with just the fingertips.

At the opening edge of the nozzle hole opened by removing the mogiri plug, since the opening edge becomes the trace of removing the mogiri plug, fluff occurs and the like, but the concave part in which the nozzle hole is opened at the bottom is formed. Since the depth of the fluff is larger than the protruding height of the generated fluff, etc., this fluff does not stick out from the inside of the recess. Therefore, while the nozzle cylinder is in contact with the skin such as the scalp, the contents are poured from the bottle The fluff does not come into contact with the skin when used out.

Since the structure is such that the finger hook is integrally provided on the mogiri stopper, the cavity mold of the molding mold is a split mold due to the mold release of the injection-molded nozzle cap.
For this reason, the top wall portion forming the concave portion is in a “peeled” state with respect to the cavity mold that opens the mold, and has a structure that is easily collapsed and deformed at the time of mold release.

However, since an elastically deformable portion for allowing the displacement of the top wall side portion by elastic deformation is provided in the portion between the top wall and the assembling cylinder, the split mold type cavity mold is provided. The mold is opened and the top wall is "stripped"
When this state is reached, this elastically deforming portion elastically deforms and displaces the top wall portion in a direction that does not result in the "pulled-out" state, so the top wall portion is smoothly released from the mold without being crushed and deformed illegally. To do.

Further, the elastically deforming portion is used to intermittently press the tip of the nozzle cylinder, that is, the top wall against the skin intermittently when applying the poured contents while massaging. On the other hand, it exerts a cushioning effect, and similarly, when an external force is improperly applied to the mogiri stopper due to a collision with another article, this elastically deformable part elastically deforms and absorbs the external force, so the thin part is illegally ruptured. Is unlikely to occur.

According to a second aspect of the present invention, the elastically deformable portion of the first aspect of the invention is such that the central portion of the shoulder wall that does not contribute to the assembling to the bottle mouth tube is thick enough to be easily elastically deformed. It is a configured one.

According to the second aspect of the present invention, since the elastically deformable portion is formed only by thinning the wall thickness of the central portion of the shoulder wall, the structure of the entire nozzle cap is simplified, and the existing mold can be used. It can be easily molded with a slight amount of processing.

According to a third aspect of the present invention, the elastically deformable portion according to the first aspect of the invention is formed by surrounding a step portion having a wall thickness that is elastically deformable in a part of the nozzle cylinder. Is.

According to the third aspect of the invention, since the elastically deformable portion can be located near the top wall, the top wall can be displaced quickly and stably.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Nozzle cap 1 is bottle bottle 1
4, an assembling cylinder 2 that is densely assembled to the No. 4, a shoulder wall 4 that is continuously connected from the upper end of the assembling cylinder 2 in the shape of an inner collar, and an upright continuous arrangement from the inner peripheral edge of the shoulder wall 4. A vertically elongated cylindrical nozzle cylinder 6, a top wall 7 that is connected to the upper end of the nozzle cylinder 6 and closes the upper end opening of the nozzle cylinder 6, and stands upright on the top wall 7. It is composed of a mogiri stopper 10.

The top wall 7 has a concave portion 8 whose upper surface is depressed in the shape of a spherical arc and whose diameter is expanded upward. A nozzle hole 9 is formed in the central portion of the top wall 7 which is the bottom of the concave portion 8 and the nozzle is formed. The nozzle hole 9 is sealed with the mogiri stopper 10 by integrally installing the mogiri stopper 10 at the opening edge of the hole 9 through the thin portion 12 that is easily broken. 8
On the side surface of the portion projecting upward from, a finger hook portion 11 having a pair of left and right projecting pieces is provided upright continuously.

The assembling cylinder 2 is provided with a thread 3 threadedly engaged with the bottle mouth cylinder 14 on the inner peripheral surface thereof, and has a plurality of vertical threads on the outer peripheral surface for preventing slippage.

On the lower surface of the outer peripheral end portion of the shoulder wall 4 which is a continuous portion with the assembling cylinder 2, a sealing cylinder piece 5 in the form of a short cylinder which is closely fitted in the opening of the bottle mouth cylinder 14 is provided. is doing.

In the embodiment shown in FIGS. 1 and 3, the elastically deformable portion 13 provided between the assembled cylinder 2 and the top wall 7 is the shoulder wall 4 portion which is inside the seal cylinder piece 5. And the lower end edge portion of the nozzle cylinder 6 are made thin, and in the case of the embodiment shown in FIG. 4, the lower nozzle cylinder 6 portion expands in a substantially central height position of the nozzle cylinder 6. It is configured by forming a step and thinning the step.

An example of the releasing operation of the nozzle cap 1 according to the present invention will be described below with reference to FIGS. 5 to 8 by using the embodiment shown in FIGS. Figure 5
The mold device 15 is shown in the mold clamped state.
Is composed of a combination of a center core 16 and a screw core 17 that form a core mold, a pair of left and right split molds 18 that are cavity molds, a fixed plate 20, and an ejector plate 21. The split mold 18 is provided with a recess forming mold portion 19 for forming the recess 8 of the nozzle cap 1.

From the state in which the injection molding of the nozzle cap 1 shown in FIG. 5 is completed, as shown in FIG. The mold opening operation is performed, but at this time, only the center core 16 is displaced more largely than other mold parts,
A gap is formed between the center core 16 and the nozzle cap 1.

The center core 16 and the nozzle cap 1
The gap formed between and has a value such that the gap interval along the vertical direction is larger than the depth of the recess 8.

If a gap larger than the depth of the concave portion 8 is formed between the center core 16 and the nozzle cap 1, as shown in FIG. The split mold 18 is opened to the left and right to release the nozzle cap 1. At this time, the top wall 7 is the split mold 1.
8 is pressed downward by the recess forming mold part 19 of FIG.
Since 3 deforms elastically and displaces the nozzle cylinder 6 downwardly, the top wall 7 part is released from the mold without being stripped, and the top wall 7 part is not crushed and deformed.

As shown in FIG. 8, when the mold opening of each mold part is sufficiently achieved, the ejector plate 21,
Alternatively, the nozzle cap 1 is dropped or taken out and discharged by a robot (not shown).

[0029]

Since the present invention has the above-mentioned structure, it has the following effects. According to the first aspect of the invention, a large-diameter finger hook portion projecting upward from the recess is provided in an upright manner at the upper end of the mogiri stopper that is provided continuously at the bottom of the recess in the top wall of the nozzle cylinder. Although the structure of the top wall provided with the nozzle hole is configured so as not to have an adverse effect such as a fluff of the mogiri stopper, it is possible to easily remove the mogiri stopper. Thus, without complicating the molding operation, it is possible to easily remove the mogiri stopper, and it is possible to easily obtain a nozzle cap that does not have an adverse effect such as fluffing of the trace of the mogiri stopper.

Further, since the elastically deformable portion is provided between the assembly portion to the bottle container and the top wall provided with the mogiri stopper,
Due to the elastic deformation of the elastically deformable portion, it is possible to absorb an unnecessary external force acting on the mogiri stopper and an impact acting on the tip of the nozzle cylinder, thereby preventing unauthorized removal of the mogiri stopper. The applied contents can be applied in good condition.

According to the second aspect of the present invention, since it is possible to easily mold the existing mold apparatus by slightly processing it, it is possible to greatly reduce the cost required for manufacturing. Becomes

According to the third aspect of the invention, since the elastically deformable portion can be located near the nozzle hole, the top wall can be displaced promptly and reliably, which results in stable crushing. A preventive action and a cushioning action can be obtained.

[Brief description of drawings]

FIG. 1 is a semi-longitudinal front view showing an embodiment of the present invention.

FIG. 2 is an overall plan view of the embodiment shown in FIG.

FIG. 3 is an enlarged view of the right half surface of the embodiment shown in FIG.

FIG. 4 is an enlarged view of a right half surface of a longitudinal section of another embodiment of the present invention.

FIG. 5 is used for explaining a molding procedure of the cap of the present invention.
The first explanatory diagram.

FIG. 6 is used for explaining a molding procedure of the cap of the present invention.
The second explanatory diagram.

FIG. 7 is used for explaining a molding procedure of the cap of the present invention.
Third explanatory diagram.

FIG. 8 is used for explaining a molding procedure of the cap of the present invention.
FIG.

[Explanation of symbols]

1; Nozzle cap 2; Assembled cylinder 3; Thread 4; Shoulder wall 5; Seal tube piece 6; Nozzle tube 7; Top wall 8; Recess 9; Nozzle hole 10; Mogiri stopper 11; Finger rest 12; Thin part 13; Elastic deformation part 14; Bottle bottle 15; Mold equipment 16; Center Core 17; Screw core 18; Split mold 19; Recessed mold part 20; Fixed plate 21; Ejector plate

Continued front page    F-term (reference) 3E084 AA04 AA12 BA01 CA01 CB01                       CB02 CB04 CC03 DA01 DB12                       DC03 FA09 FB01 GA04 GB04                       LA04 LB02 LB07 LC01

Claims (3)

[Claims] 1. A nozzle cylinder (6) is erected on an upper end of an assembling cylinder (2) which is tightly assembled to a bottle mouth cylinder (14) via an inner collar-shaped shoulder wall (4), At the upper end of the cylinder (6), a recess (8) having an upwardly expanded diameter is formed on the upper surface, and a top wall (7) having a nozzle hole (9) in the center is continuously provided, and the nozzle hole (9) is formed. At the edge of the hole, a mogiri stopper (10), which is continuously provided through a thin portion (12) that is easy to break and seals the nozzle hole (9), is erected continuously, and at the upper end of the mogiri stopper (10). The mogiri stopper protruding upward from the recess (8)
The finger hooking part (11) having a diameter larger than (10) is continuously provided, and the above-mentioned assembled cylinder
An elastic deformation portion (13) is provided in a portion between the (2) and the top wall (7) to allow the displacement of the top wall (7) side portion with respect to the assembly cylinder (2) side portion by elastic deformation. , The depth of the recess (8),
A nozzle cap made of synthetic resin, which is set to a value larger than the protruding height of fluff or the like generated in the trace of the mogiri stopper (10). 2. The elastically deformable portion (13) is configured such that the central portion of the shoulder wall (4) which does not contribute to the assembling to the bottle cap (14) is thick enough to be easily elastically deformed. 1. The nozzle cap according to 1. 3. The nozzle cap according to claim 1, wherein the elastically deformable portion (13) is formed by surrounding a step portion having a wall thickness that is elastically deformable in a part of the nozzle cylinder (6).