JP2002326645A - Capped container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a capped container which can certainly maintain a tight sealed condition by capping during a period from being produced until the time of use and is available for smooth opening and closing of the cap at the time of use. SOLUTION: The capped container 10 having a cap 13 screwed onto a mouth/ neck part 12 of the container main body 11 is in a structure wherein a mouth/ neck part rib 16 extending in the direction intersecting an external thread 14 provided at the mouth/neck part 12 is provided at the mouth/neck part 12 so as to be squashed in plastic deformation when an internal thread 15 provided at the cap 13 passes through. The mouth/neck part rib 16 is provided, extending from the tail end of the external thread 14, and deforms in plasticity so as to be squashed when the front end of the internal thread 15 of the cap 13 passes through. An auxiliary mouth/neck part rib 19 is provided in a height lower than the mouth/neck part rib 16 at a position opposite to the mouth/neck part rib 16 at a half circuit of the external thread 14 of the mouth/neck part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container with a cap in which a cap is screwed onto the mouth and neck of a container body.

[0002]

2. Description of the Related Art A container with a cap, in which a cap is screwed onto the mouth and neck of a container body, is used for storing various contents such as detergents, cosmetics, and foodstuffs. It is used for tightening a cap with a predetermined torque so that the contents can be taken out in a sealed state inside the container body. Such a container with a cap is commercialized by accommodating the contents in the container main body in the container production line, and then screwing the cap onto the mouth and neck of the container main body with a preset tightening torque. After that, the product is wrapped and provided for transportation, display, sale, and the like.

[0003] In such a container with a cap, the cap attached to the mouth and neck is loosened and the tightening torque is reduced before being sold after being commercialized in a factory or the like and used by consumers. In such a case, the sealed state cannot be maintained, which may lead to leakage of the stored contents, deterioration of quality, and the like. Such a decrease in the tightening torque is particularly difficult when the cap is attached with the packing interposed between the inside of the cap and the tip of the mouth and neck, and the packing loses its elasticity with time in a compressed state. This is remarkable.

[0004] On the other hand, in order to prevent the cap from loosening and preventing the sealed state of the container from being maintained after the product is put into use, a step is formed on one of the threads constituting the male screw or the female screw. A part and a plurality of ridges are provided, and the tightening torque is increased by running the other thread on these, thereby preventing the attached cap from loosening and stably maintaining the sealed state. For example, it is described in JP-A-54-135155 and JP-A-58-49747.

However, according to the containers with caps described in these publications, the loosening of the cap is effectively prevented. However, when the container is used, when the cap is opened and closed, Subsequently, a large tightening torque is required to cause the screw thread to ride on the step portion or the ridge, and the opening / closing operation becomes difficult.

SUMMARY OF THE INVENTION The present invention relates to a container with a cap which can reliably maintain a sealed state by a cap until it is used after it is commercialized, and which can be opened and closed smoothly when the container is used. For the purpose of providing.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a container with a cap in which a cap is screwed onto a mouth and neck of a container body, wherein the cap is screwed in a direction intersecting a convex thread provided on the mouth and neck. A rib piece that is extended and is plastically deformed so as to be crushed when the ridge screw provided on the cap passes is provided on the mouth and neck portion, or a direction intersecting with the ridge screw provided on the cap. The above-described object is achieved by providing a cap-equipped container provided with a rib piece that is provided on the cap, the rib piece being plastically deformed so as to be crushed when a convex thread screw provided on the mouth and neck portion passes when the cap screw is provided. It has been achieved.

In the above description, as a method of plastically deforming the rib piece of the mouth and neck or the rib piece of the cap so that the rib piece is crushed by the passage of the ridge screw of the cap or the ridge screw of the mouth and neck, for example, It is possible to adopt a method in which the rib pieces and the rib pieces of the cap are made of a soft material capable of being plastically deformed, and the convex thread of the cap and the convex thread of the mouth and neck are formed of a material harder than these. .

According to the container with a cap of the present invention, the rib piece of the mouth and neck portion or the rib piece of the cap extends from the end of the convex thread screw of the mouth and neck portion or the convex thread of the cap. It is preferable that plastic deformation is performed so that the protruding thread of the cap or the tip of the protruding thread of the mouth and neck portion is crushed when passing through.

Here, the terminating portion of the ridge screw of the mouth and neck or the ridge screw of the cap is screwed into the mouth and neck of the container body and the cap when the cap is closed. From the part where the ridge screw of the cap or the ridge screw of the cap overlaps last, to about 1/2 of the outer circumference of the mouth and neck or the inner circumference of the cap (from the last overlapping part to the outer circumference of the mouth and neck or the cap) (In the range of 0 to 180 ° along the inner circumference). In addition, the terminal portion extends from the last overlapping portion along the outer circumference of the mouth and neck or the inner circumference of the cap.
Preferably, the region is in an angle range of ~ 90 °,
More preferably, the region is in the range of 0 to 45 °.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first preferred embodiment of the present invention shown in FIG.
The container 10 with a cap according to the embodiment is a bottle-shaped container that stores therein, for example, detergents, cosmetics, foodstuffs, and the like, and includes a container body 11 and a mouth and neck portion 1 of the container body 11.
2 and a cap 13 which is screwed and mounted. Further, according to the first embodiment, on the outer peripheral surface of the mouth and neck portion 12, a convex thread 14 forming a male screw is formed in a spiral shape, and on the inner peripheral surface of the cap 13, a female screw is formed. The convex ridge screw 15 is formed in a spiral shape. And the mouth and neck 12
A mouth-and-neck rib piece 16 is provided on the mouth-and-neck part 12 so as to extend in a direction intersecting with the convex ridge screw 14 of the mouth. Thread screw 1
5 is plastically deformed so as to be crushed when passing through.

According to the first embodiment, the container body 11
Is, for example, 4000 to 60 made of medium density polyethylene.
A bottle-shaped container having an inner capacity of 00 ml, which is integrally formed with the mouth and neck 12, the convex thread 14, the mouth and neck rib pieces 16 and the like by a known plastic molding method such as injection molding or blow molding. You. Here, the constituent material of the container body 11 may be a single medium-density polyethylene, or a blend of high-density polyethylene and low-density polyethylene. Further, according to the first embodiment, the container body 11
Medium-density polyethylene, which is a material of JIS K676
The tensile yield strength measured by the measurement method according to 0 has a strength of, for example, about 18 MPa.

The mouth and neck 12 of the container body 11 is shown in FIG.
As shown also in (c), it is a portion that protrudes above the container body 11 at a height of, for example, 15 to 20 mm, and has a circular spout 17 having an inner diameter of 20 to 30 mm. A single ridged screw 14 is provided spirally around the outer peripheral surface substantially twice. The convex thread screw 14 projects in a substantially trapezoidal cross section at a height of, for example, about 1.5 mm from the outer peripheral surface, a lower surface thereof is substantially perpendicular to the outer peripheral surface, and an upper surface is oblique to the outer peripheral surface. Has been rubbed.

Further, from a position about 45 ° (angle) in the helical direction from a lower end 18 of the lower part of the convex thread 14, the lower part extends vertically downward of the container body 11 in a direction intersecting the convex thread 14. The mouth and neck rib pieces 16 are formed. The mouth-and-neck rib piece 16 is formed at an angular position of 45 ° from the parting line 31 in consideration of the direction in which the mold is removed when the container body 11 is molded, and has a substantially triangular cross-sectional shape. With such a shape, the neck and neck rib pieces 16 can be provided at arbitrary positions. The mouth-and-neck rib piece 16 has a width of 2 to 3 m at the base of the substantially triangular cross section.
m, and protrudes at a height of about 1.5 mm, which is the same as that of the convex thread screw 14. The height of the mouth and neck rib pieces 16 is
The height is preferably 0.5 to 1.5 times the height of the ridged screw 14, and more preferably 0.8 to 1.5 times. From the viewpoint of the effect of preventing loosening, it is preferable to set it to 0.5 times or more, to maintain an appropriate tightening torque, or to prevent a so-called overrun in which the convex thread 15 of the cap 13 rides on the convex thread 14 of the mouth and neck. In terms of
It is preferable to set it to 5 times or less.

Further, according to the first embodiment, the auxiliary mouth-and-neck rib piece 19 is provided at a position facing the mouth-and-neck rib piece 16 which has been half-turned along the protruding thread 14 of the mouth and neck. ing. The auxiliary mouth-and-neck rib piece 19 has a triangular cross-sectional shape, like the mouth-and-neck rib piece 16, and extends downward in the vertical direction of the container body 11 in a direction intersecting with the ridged screw 14. Is provided. The auxiliary mouth / neck rib piece 19 has a width of about 2 to 3 mm at the base of the substantially triangular cross section, and the mouth / neck rib piece 16
It protrudes at a height of about 1.0 mm, which is lower than that. Note that the height of the auxiliary mouth / neck rib piece 19 is
0.5 to 1.5 times, preferably 0.5 to 1.0 times the height of
Preferably, the height is doubled. From the viewpoint of preventing inclination when tightening the cap 13 and preventing rattling and improper mounting of the cap 13, it is preferably 0.5 times or more, and from the viewpoint of preventing improper fastening of the cap 13 due to an increase in the tightening torque. , 1.0 times or less.

According to the first embodiment, the cap 13
Is made of, for example, polypropylene, and is formed by injection molding or the like to have a size capable of covering the mouth and neck portion 12 as shown in FIG. A single convex threaded screw 15 screwed and engaged with the threaded screw 14 is provided in a helical shape substantially twice around the inner peripheral surface. The polypropylene which is the material of the cap 13 is made of JI
The tensile yield strength measured by the measuring method according to SK6760 has a strength of, for example, about 41 MPa. Therefore, the cap 13 is a material that is about twice as strong as the material of the container body 11.

The convex thread 15 provided on the inner peripheral surface of the cap 13 has a substantially trapezoidal cross-sectional shape similar to the convex thread 14 of the mouth and neck portion 12, and is, for example, about 1.5 mm from the inner peripheral surface. It protrudes at a height, and its lower surface is rubbed obliquely with respect to the inner peripheral surface, and its upper surface is rubbed substantially at right angles to the inner peripheral surface. The substantially right-angled upper surface of the convex thread screw 15 is the mouth and neck 1
When the cap 13 is screwed into the mouth and neck portion 12 by being in close contact with the substantially right-angled lower surface of the second convex thread screw 14, a tightening torque is generated.

According to the first embodiment, in a line for commercializing the container 10 with the cap in a factory or the like, after the contents are stored in the container body 11, the cap 13 is
The cap 13 is screwed into the mouth and neck portion 12 of the container body 11 while the packing 30 is interposed between the inside of the container and the tip of the mouth and neck portion 12, and the cap 13 is tightened with a predetermined torque. The object is sealed in the container body 11. In the step of screwing and mounting the cap 13, the ridged screw 1
When the tip of the ridged screw 15 of the cap 13 passes through the mouth-and-neck rib piece 16 provided at the end of the cap 4, the hardness of the mouth-and-neck rib piece 16 made of medium-density polyethylene is higher than that of the polypropylene. Since the hardness of the convex thread screw 15 made of is approximately twice as high as the tensile yield strength, the mouth-neck portion of the portion 32 of the mouth-neck portion adjacent to the convex thread screw 14 through which the convex thread screw 15 passes is formed. Plastic deformation so that the rib part 16 is crushed,
When the ridge screw 15 bites into the mouth and neck rib piece 16, the ridge screw 15 is firmly fixed. In addition, the hardness of the ridged thread 15 is set to be 1% smaller than the hardness of the mouth and neck rib 16 in terms of tensile yield strength so that the mouth and neck rib piece 16 can be crushed without excessive tightening torque. The strength is preferably at least 2 times, more preferably at least 1.5 times.

According to the container 10 with a cap according to the first embodiment, the sealed state of the cap 13 can be reliably maintained from the time of commercialization to the time of use. 13 can be opened and closed smoothly. That is, since the convex thread 15 of the cap 13 is fixed so as to crush and bite the mouth and neck rib piece 16, the compression deformation of the packing interposed between the cap 13 and the mouth and neck part 12 takes time. In addition, even if the tightened state is easily loosened by losing its elasticity or the like, the necessary tightening torque of the cap 13 can be maintained by the biting into the mouth-and-neck rib pieces 16, thereby sealing the container body 11. The state can be easily secured. On the other hand, when the consumer removes the cap 13 to use the contents and attaches the cap 13 to reseal, the mouth and neck rib pieces 16 are crushed and remain plastically deformed. Therefore, subsequent opening and closing operations can be performed smoothly without requiring extra torque for crushing the mouth and neck rib pieces 16.

Further, according to the container 10 with a cap of the first embodiment, the mouth and neck rib piece 16 is located at a position opposed to the mouth and neck rib piece 16 which has been rotated halfway along the ridge screw 14 of the mouth and neck. 1
Since the auxiliary mouth and neck rib pieces 19 having a height lower than 6 are provided, it is possible to effectively prevent the cap 13 from tilting when the cap 13 is tightened, and to avoid rattling or improper mounting of the cap 13. Becomes possible. That is, before the end portion of the convex thread 15 of the cap rides on the neck and neck rib piece 16 and crushes it, the mouth and neck rib piece 1
6 is slightly contacted with the auxiliary mouth and neck rib piece 19, which is disposed opposite to the rib 6 so as to prevent the inclination, so that the operation of raising the convex thread screw 15 is performed in two steps, and the inclination of the cap 13 is reduced. Is suppressed. In addition, the auxiliary mouth / neck rib piece 19 supports the reaction force when the mouth / neck rib piece 16 is crushed, thereby preventing the cap 13 from rattling or mounting failure.

FIG. 3 shows a container 20 with a cap according to a second preferred embodiment of the present invention. According to the second embodiment, the container 20 with the cap is the container body 2
1 and a cap 23 which is screwed onto the mouth and neck portion 22 of the container body 21. A ridge screw 24 is spirally formed on the outer peripheral surface of the mouth and neck portion 22. A ridged screw 25 is spirally formed on the peripheral surface. The cap rib piece 26 is provided on the inner peripheral surface of the cap 23 so as to extend in the vertical direction of the container main body 11 in a direction intersecting the convex thread 25 of the cap 23.

According to the second embodiment, the container body 21
Consists of, for example, polypropylene, PET, glass,
It is a material that is twice as strong as the cap 23 made of low-density polyethylene or medium-density polyethylene in terms of tensile yield strength. The mouth and neck portion 22 of the container body 21 is provided on the outer peripheral surface thereof with a helical screw 24 having a substantially trapezoidal cross section and having a single convex ridge 24 substantially twice around the outer peripheral surface.

In addition, according to the second embodiment, the cap 23 is formed by injection molding or the like, has a size capable of covering the mouth and neck portion 22, and has an inner peripheral surface provided with:
A single ridged screw 25 having a substantially trapezoidal cross section, which is screwed and locked to the ridged screw 24 of the mouth-and-neck portion 22, is provided spirally around the inner peripheral surface substantially two times. And, the convex ridge screw 25 of the cap
A cap rib piece 26 is formed at an upper end portion of the container body 11 so as to extend in the vertical direction of the container main body 11 in a direction intersecting with the convex ridge screw 25, and a halfway along the convex ridge screw 25. At the position facing the rotated cap rib piece 26,
An auxiliary cap rib piece 27 is formed.

According to the cap-equipped container 20 of the second embodiment, when the cap 23 is screwed and the upper end portion of the ridge screw 24 of the mouth and neck passes through the cap rib piece 26, The cap rib piece 26 is plastically deformed so as to be crushed, thereby providing the same operation and effect as the container 10 with the cap according to the first embodiment.

The present invention can be variously modified without being limited to the above embodiments. For example, the rib piece of the mouth and neck and the rib piece of the cap do not necessarily need to be provided to extend from the terminal portion of the convex thread of the mouth and neck or the convex thread of the cap, and can be provided at an intermediate portion. Further, it is not always necessary to extend the container body in the up-down direction, and the container body may be formed to extend obliquely. further,
It is not always necessary to provide the auxiliary rib pieces of the mouth and neck and the auxiliary rib pieces of the cap. Furthermore, the cap is not limited to a single-thread screw, but may be a double-thread screw, a triple-thread screw, or the like. The material of the harder one of the container body and the cap may be glass or metal other than plastic. Further, the present invention provides a convex and concave screw forming an internal thread on the inner peripheral surface of the mouth and neck of the container body, and a convex and convex screw forming an external screw on the outer peripheral surface of the cap, and the cap is attached to the mouth and neck of the container main body. The present invention can also be applied to a container with a cap of a type that is screwed and mounted on the container.

[0026]

According to the container with the cap of the present invention, the sealed state by the cap can be reliably maintained after the product is manufactured and before it is used.
The opening and closing of the cap can be performed smoothly.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a main part of a container with a cap according to a first embodiment of the present invention.

2 (a) is a plan view, FIG. 2 (b) is a side view, and FIG. 2 (c) is a partially schematic sectional view showing the mouth and neck of the container body of the container with a cap according to the first embodiment of the present invention. .

FIG. 3 is a schematic sectional view showing a main part of a container with a cap according to a second embodiment of the present invention.

[Explanation of symbols]

 10, 20 Container with cap 11, 21 Container body 12, 22 Neck and neck 13, 23 Cap 14, 24 Convex thread on mouth and neck 15, 25 Convex thread on cap 16 Neck and rib rib piece 17 Spout port 18 Termination 19 auxiliary mouth neck rib piece 26 cap rib piece 27 auxiliary cap rib piece 30 packing 31 parting line

Continued on the front page F term (reference) 3E084 AA04 AA12 AA25 AA26 AA32 AB01 AB09 BA01 CA01 CC04 CC05 DA01 DB12 DC04 DC05 FA09 FB01 FB06 FB07 GA04 GB04 HA01 HB03 HD01

Claims (4)

[Claims] 1. A container with a cap to which a cap is screwed and attached to a mouth and neck of a container body, wherein the container extends in a direction intersecting with a ridged screw provided on the mouth and neck and is attached to the cap. A rib piece that is plastically deformed so as to be crushed when the provided ridge screw passes is provided on the mouth and neck portion, or is extended in a direction intersecting with the ridge screw provided on the cap, and the rib is provided. A container with a cap, wherein a rib piece that is plastically deformed so as to be crushed when a ridge screw provided on a neck portion passes is provided on the cap. 2. The rib piece of the mouth and neck portion or the rib piece of the cap is provided so as to extend from an end portion of the convex ridge screw of the mouth and neck portion or the convex ridge screw of the cap. The container with a cap according to claim 1, wherein the container is plastically deformed so as to be crushed when the leading end portion of the ridge screw or the convex ridge screw of the mouth and neck passes. 3. The mouth-and-neck portion is located at a position opposed to the mouth-and-neck portion rib piece or the cap-side rib piece that has been turned half-turn along the convex-portion screw of the mouth-and-neck portion or the convex-portion screw of the cap. Whether the auxiliary rib piece of the mouth and neck or the auxiliary rib piece of the cap extending in the direction intersecting with the convex thread or the convex thread of the cap is equivalent to the rib piece of the mouth and neck or the rib piece of the cap, 3. The container with a cap according to claim 2, wherein the container is provided at a lower height. 4. The height of the rib piece of the mouth and neck or the rib piece of the cap is 0.5 to 1.5 times the height of the convex thread of the mouth and neck or the convex thread of the cap. The container with a cap according to any one of claims 1 to 3, which has a height of: