JPH1159707A - Extruding container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately position the screw cylinder of a cap in a cylindrical opening and screw it therein, by protruding a guide member engaging with the thread of the screw cylinder, at the upper end periphery of the screw cylinder. SOLUTION: A double-thread screw 7 is formed in the screw cylinder 5 of a container A and a guide ring 8 processed with knurling is provided at the outer periphery. An extruding opening 9 is formed at the upper end of an extruding cylinder 6 to extrude the contents by pressing the body 3. A screw cylinder 22 is provided at the inside of the side wall 21 in a cap B and a double-thread screw 23 engaging with the double-thread screw 7 of the outer periphery of a cylindrical opening 1, is formed in the screw cylinder 22. And stopper rods 24a, 24b fixed to a positioning member 12 are provided at the outer periphery. The outer diameter of the guide ring 8 is made nearly equal to the inner diameter of the ridge of thread of the double-thread screw 23 formed in the screw cylinder 22 of the cap B. The valve body 26 is set to engage with the extruding opening 9, with a fastening allowance. The stopper rod 24 engages with the positioning member 12 at the lowermost position of the cap B and the container A and the cap B are positioned circumferentially and the cap B is vertically positioned respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an extrusion container and, more particularly, to a structure of a cap screwing portion of the extrusion container.

[0002]

2. Description of the Related Art An extruding container having a container mouth tube portion provided with an elongated extruding tube at the tip is conventionally known. As shown in FIG. 7, the conventional container is provided with a screw 31 for screwing the cap b onto the mouthpiece 30 of the container a, but the upper end of the mouthpiece 30 follows the thread root. It ends in a cylinder, and an extrusion port 3 is provided at the tip so as to extend from the upper end of the barrel section 30.
An extruding cylinder 33 in which 2 is bored is provided upright. Cap b
A screw 35 that is screwed into the screw 31 of the mouthpiece portion 30 is provided on the inner periphery of the screwing cylinder 34. A cap body 37 for closing the extrusion port 32 and an extrusion cylinder 33 are provided on the inner surface of the cap top plate 36. A sealing ring 38 is provided which engages the outer periphery.

[0003]

However, the longer the extruding cylinder 33 is, the larger the height of the cap b is. If there is looseness between the screw 31 of the mouthpiece 30 and the screw 35 of the cap b, the cap b Is tilted, and the plug 37 is
2 and the plug 37 or the surface of the extrusion port 32 is sometimes damaged or deformed to weaken the sealing. To prevent this, cap b
Is provided with a sealing ring 38 which is engaged with the outer periphery of the extrusion cylinder 33. However, if the play of the screw is large, the sealing ring 38 is deformed at the time of use, so that the above problem is completely eliminated. could not.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a guide in a mouth portion of a container so that a threaded tube of a cap can be accurately positioned with respect to the mouth portion. It is an object of the present invention to provide an extrusion container that is adapted to be screwed.

[0005]

According to the present invention, in order to achieve the above-mentioned technical object, as a pushing container, a container mouth portion comprises a screwing tube and an extruding tube continuing above the screwing tube. A push container adapted to be fitted with a cap, wherein a guide member which engages with a thread of a threaded tube of the cap is protrudingly provided on a peripheral edge of an upper end portion of the threaded tube. As an embodiment of the guide member, a guide ring in which knurls are engraved on the surface, or vertical ribs arranged at regular intervals on the circumference is used.

[0006]

Next, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, A is a container, which is molded using a soft synthetic resin as a material,
Mucus and viscous materials are filled as contents. B is a cap, which is formed of a synthetic resin.

The container A has a mouthpiece portion 1 and a shoulder portion 2 and a body portion 3 and a bottom portion 4. As shown in FIGS.
Is composed of a threaded cylinder 5 and an extrusion cylinder 6 provided above the threaded cylinder. A double thread 7 is engraved on the peripheral surface of the screwing cylinder 5, and a guide ring 8 engraved with knurls on the outer periphery protrudes from an upper peripheral edge thereof. An extrusion port 9 is formed at the upper end of the extrusion cylinder 6, and the contents are extruded by pressing the body 3.

The shoulder 2 is provided with a circular step 10 following the mouthpiece 1 and a shoulder wall 11 connected to the step 10. A cap positioning member 12 is provided on the outer periphery of the step portion 10, and the lower end of the shoulder wall 11 is a lozenge-shaped lower end edge having an arc of a corner.

The torso portion 3 has a torso wall 13 having the same shape as the lower end edge of the shoulder wall 11 following the shoulder wall 11, and the bottom portion 4 has a bottom wall having the same shape as the sectional shape of the torso portion 3. I have.

[0010] As shown in FIG.
A top wall 20 having the same outer periphery as the body 3 of the body, a side wall 21, and a screwing cylinder 22 disposed inside the side wall 21.
On the inner circumference of the screwing cylinder 22, a double-threaded screw 23 screwed to the double-threaded screw 7 on the outer periphery of the mouthpiece portion 1 is engraved, and two stopper rods 24a engaging with the positioning member 12 are formed on the outer circumference. , B
The stopper rod 24 and the side wall 21 are connected by a support plate 25. At the center of the inner surface of the top wall 20, a plug 26 for closing the extrusion port 9 is provided.

As shown in FIG. 5, the outer diameter of the guide ring 8 of the mouthpiece portion 1 is the same as that of the double threaded screw 2 engraved on the screwing cylinder 22 of the cap B.
3 is almost the same as the inside diameter of the thread crest.
Are adapted to engage with the extrusion port 9 with a certain interference.

Next, the operation and effect of the above construction will be described.
Is fitted, the crest of the double line 23 of the cap B is
, And is positioned such that the axis of the screwing cylinder 22 of the cap B coincides with the axis of the barrel 1. Then, when the cap B is rotated, the double thread 7 of the mouthpiece 1 and the double thread 23 of the screwing cylinder 22 are screwed in the same axis, and the cap B is accurately guided downward in the axial direction.

At the lowermost position of the cap B, the stopper rod 24 engages with the positioning member 12, and the container A and the cap B
Are positioned in the circumferential direction, and at the same time, the position of the cap B in the vertical direction is accurately positioned. Therefore, the plug 26 is accurately positioned in the vertical direction, and is inserted into the extrusion port 9 with its axis aligned with the axis of the extrusion port 9.

In the above embodiment, the guide ring 8 is used as a guide member for the cap. However, as shown in FIG. 6, vertical ribs 27 may be provided at regular intervals on the circumference.
In addition, although the double thread is adopted as the screw, it may be a single thread and is not limited to a specific screw. In the above embodiment, as shown in the figure, the container is a bottle in which the body and the bottom are integrally formed, but the container may be a tube container in which the lower end of the body is fused.

[0015]

Since the present invention is configured as described above, it has the following effects. A guide ring that engages with the top of the cap screw is provided above the screw engraved on the container mouthpiece, so that when the cap is screwed onto the mouthpiece, it is accurately guided downward in the axial direction. Is done. Therefore, the stopper provided on the top wall of the cap is accurately positioned and inserted into the extrusion port, and the periphery of the extrusion port is not damaged. Also, there is no need to provide a sealing ring on the top wall of the cap to engage with the outer periphery of the extrusion cylinder.

[Brief description of the drawings]

FIG. 1 is an exploded view of the present invention.

FIG. 2 is a front view of a main part of the container.

FIG. 3 is a plan view of the container.

FIGS. 4A and 4B are explanatory views of a cap, in which FIG. 4A is a partially sectional front view, and FIG. 4B is a bottom view.

FIG. 5 is an assembly view of a container and a cap.

FIG. 6 is an explanatory diagram of another embodiment.

FIG. 7 is an explanatory view of a conventional extrusion container.

[Explanation of symbols]

 A, a container B, b cap 1, 30 mouth tube part 5, 22, 34 screwing tube 6, 33 extrusion tube 7, 23, double thread 8 guide ring 9, 32 extrusion port 20 36 top wall 26, 37 stopper 27 vertical ribs

Claims (1)

[Claims] 1. An extruding container in which a container mouth tube portion comprises a screwed tube and an extruding tube continuing above the screwed tube, wherein a cap is fitted to the screwed tube, and a peripheral edge of an upper end portion of the screwed tube. And a guide member which engages with a thread of a screwed cylinder of the cap.