JP4323040B2 - Container with cap - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a container with a cap in which a container filled with contents such as a liquid detergent, cosmetics, or a cleaning / disinfecting agent is sealed with a screw cap, and in particular, when the screw cap is engaged with an opening of a container body. The content leakage due to the inclination of the cap is effectively avoided.
[0002]
[Prior art]
Generally, a container for filling and holding a liquid content has a threaded portion formed on the outer periphery of an opening communicating with the container body, and a screw cap is screwed into and engaged with the opening. The filling space of the container is hermetically sealed by pressing the tip of the opening against the installed seal packing.
[0003]
By the way, even if this kind of container is screwed into the opening of the container body and engaged with the screw cap strongly, the cap naturally loosens due to vibration or shock during the conveyance process or handling of the container. The contents in the container may leak.
[0004]
For this reason, conventionally, as a measure for preventing the cap from loosening, a local protrusion is provided between the screw threads of the opening (screw valley), and when the cap is screwed, the screw thread of the cap is attached to the protrusion. The engaging force with respect to the opening portion of the cap is increased by being ridden, and as a prior document regarding this point, for example, Japanese Utility Model Publication No. 56-12204 is referred to.
[0005]
However, in the type that raises the engagement force of the cap by climbing the threaded portion of the cap onto the protrusion, the cap does not easily loosen, but a force that constantly pushes the cap in the radial direction is always applied. Therefore, for example, the container is easily damaged when an impact is applied to the cap by, for example, dropping the container by mistake.
[0006]
For this reason, as shown in FIG. 1, a part of the protrusion 1 (the surface on which R is formed) in order to reduce the pressing force of the protrusion against the cap thread and reduce the force applied in the radial direction of the cap. The threaded portion 2a of the cap 2 comes into contact with the cap 2 to exert the effect of preventing the cap from loosening. However, in such a structure, the contact between the threaded portion 2a of the cap 2 and the protrusion 1 becomes unstable. As shown in FIG. 2, the cap 2 may be mounted at an inclination in the opening 3, and is partially between the tip of the opening 3 and the seal packing 4 disposed inside the cap 2. There is a problem that a gap t is generated, and the contents leak even though the cap is attached.
[0007]
An object of the present invention is to propose a novel container with a cap that can be expected to prevent the cap from loosening with respect to the container body and is not attached to the opening of the container body with the cap tilted.
[0008]
[Means for Solving the Problems]
The present invention includes a container main body having an opening for filling contents having a threaded portion on the outer peripheral surface, and a screw cap that engages with the threaded portion of the opening of the container main body and seals the filling space of the container main body. In a container with a cap,
The opening is provided with a locking projection at least at one location on the outer periphery thereof to firmly come into contact with the screw tip of the screw cap between the screw threads of the screw to prevent the screw cap from loosening.
Adjacent to this locking projection, provided with a tilt prevention part to avoid the tilt of the screw cap with respect to the opening of the container body,
The tilt prevention portion has a tip portion that is lower than the protruding end of the locking projection but higher than the valley bottom between the threads , and forms a step with the locking projection. It is a container with a cap.
[0009]
It is preferable that the inclination preventing portion forms a step with the locking projection.
[0010]
Further, the locking projection has an inclined surface toward the bottom of the container body at the protruding end, and the tilt prevention portion is connected to the inclined surface of the locking projection at the tip, and further toward the bottom of the container body. Those having an inclined surface are preferable.
[0011]
A screw cap provided with a trigger type dispenser can also be applied.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be specifically described with reference to the drawings.
FIG. 3 schematically shows a main part of a container with a cap according to the present invention. In the figure, reference numeral 5 denotes a container body manufactured by blow molding a material such as a thermoplastic resin. Includes an opening 5b for filling the contents having a threaded portion 5a on the outer peripheral surface. Reference numeral 6 denotes a screw cap that engages with the screw portion 5a of the opening 5b to seal the filling space in the container body.
[0013]
Reference numeral 7 denotes a locking projection for preventing the screw cap 6 from loosening. The locking projection 7 is provided between the screw threads around the opening 5b, preferably at approximately equal intervals. Thus, the screw cap 6 is firmly in contact with the tip of the thread, thereby preventing the screw cap 6 from loosening.
[0014]
Reference numeral 8 is disposed adjacent to the locking projection 7 and has a tip portion that is lower than the protruding end of the locking projection 7 but higher than the valley bottom between the threads, and is inclined with respect to the opening 5b of the screw cap 6. It is a tilt prevention part to avoid.
[0015]
In the present invention, even if the screw portion of the screw cap 6 is detached from the locking projection 7, the screw portion of the cap 6 is received by the tilt preventing portion 8 following the locking projection 7. 6 is avoided from being largely inclined with respect to the opening 5b, so that there is a gap between the packing 6a disposed inside the cap 6 and the tip of the opening 5b as in the prior art. It does not occur.
[0016]
FIG. 4 shows the appearance of the locking projection 7 and the tilt prevention portion 8 shown in FIG. Since the inclination preventing portion 8 is basically formed with a step between the locking projection 7, a force that pushes the cap 6 in the radial direction does not act. The size and shape are not particularly limited, but a rib-shaped one can be applied as shown.
[0017]
FIGS. 5A and 5B show a configuration in which the width of the locking projection 7 is extended along the threaded portion in order to further enhance the loosening prevention effect of the cap 6. In such a configuration, as shown in FIG. 6, two or a plurality of inclination preventing portions 8 can be provided.
[0018]
7 (a) and 7 (b), instead of providing a step between the locking projection 7 and the inclination preventing portion 8, a continuous inclined surface toward the bottom of the container body 5 is provided on both of them, and the width thereof is also concerned. This is an example in which the size is gradually reduced from the stop protrusion 7 to the tilt prevention portion 8.
[0019]
In such a configuration, not only is the screw cap 6 mounted smoothly, but leakage of contents due to the inclination of the cap 6 can be avoided while maintaining a high anti-slack function.
[0020]
The container with a cap suitable for the present invention can be applied not only to a general cap that simply seals the opening of the container body, but also to a device equipped with a trigger-type dispenser, and the type of cap is particularly limited. Not done.
The locking projection 7 and the tilt preventing portion 8 can be made of the same material as that of the container body 5 and are simultaneously formed when the container body is manufactured.
[0021]
【The invention's effect】
According to the present invention, even if the screw portion of the cap is displaced from the locking protrusion that prevents the cap from being loosened, the tip of the screw portion is received by the tilt preventing portion, so that the cap is greatly increased in the opening. It is not mounted inclined, and therefore liquid leakage due to this inclination can be avoided.
[Brief description of the drawings]
FIG. 1 is a view showing a configuration of a conventional container with a cap.
FIG. 2 is a view showing a state where a cap is tilted and attached in a conventional container with a cap.
FIG. 3 is a diagram illustrating the configuration of a container with a cap according to the present invention.
4 is a diagram showing an external appearance of a main part of FIG. 3;
FIGS. 5A and 5B show another example of the configuration of a container with a cap according to the present invention, in which FIG. 5A shows its appearance and FIG. 5B shows its cross section.
FIG. 6 shows another configuration example of a container with a cap according to the present invention.
FIGS. 7A and 7B show another configuration example of a container with a cap, in which FIG. 7A shows its appearance and FIG. 7B shows its cross section.

Claims (2)

A container with a cap comprising a container body having an opening for filling contents having a threaded portion on the outer peripheral surface, and a screw cap that engages with the threaded portion of the opening of the container body to seal the filling space of the container body. In
The opening is provided with a locking projection at least at one location on the outer periphery thereof to firmly come into contact with the screw tip of the screw cap between the screw threads of the screw to prevent the screw cap from loosening.
Adjacent to this locking projection, provided with a tilt prevention part to avoid the tilt of the screw cap with respect to the opening of the container body,
The tilt prevention portion has a tip portion that is lower than the protruding end of the locking projection but higher than the valley bottom between the threads, and forms a step with the locking projection. A container with a cap.   The container with a cap according to claim 1, wherein the screw cap includes a trigger type discharger.

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