JPH047079Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a container with a cap, and particularly to a container with a structure in which the cap is attached to the container by elastic fitting so that it can be attached to and detached from the container in the vertical direction.

Conventionally, as containers with caps, the cap is screwed onto the open cylinder of the container, and the cap is secured by elastic and reversible engagement between the locking protrusion of the cap and the locking protrusion of the container. Those that fit into the container are common. Of these, the latter fitting structure allows the cap to be attached and removed with a single touch, so it is easier to handle than the former screw-type structure. However, it is relatively troublesome to set the fitting strength between the cap and the container, resulting in the following problems.

By increasing the strength of the fit between the cap and the container,
Since the cap cannot be easily removed, this is preferable in terms of sealing performance, but the ease of removal is extremely poor. On the other hand, if the fitting strength is reduced, the cap will be easier to remove, but at the same time the cap will be more likely to come off by mistake, which is not preferable.

In addition, in a container with a fitting type cap, the circumferential wall of the cap is made of a soft material that is easily deformed elastically, and when this part is bent by applying pressure with your fingers, the lower end of the circumferential wall comes into contact with the tapered shoulder of the container. A structure has been proposed in which the tapered surface of the cap is in contact with the cap and a component force is applied to the cap in the direction of removing the cap (for example, Utility Model Application No. 59-3851). However, in this type of conventional cap, the circumferential wall of the cap, which has a cylindrical shape with a head, is elastically deformed, so the cap itself needs to be formed thinly from a soft synthetic resin. For this reason, even if the peripheral wall of the cap is pressed and the lower end of the peripheral wall comes into contact with the tapered surface and slides, it is difficult to generate an effective force to push up the entire cap. That is, when the outer cylinder of the cap is curved into an elliptical shape to produce a wedge action, since the outer cylinder is a headed cylinder integrally formed with the cap,
Even if it tries to deform into an elliptical shape, the top surface suppresses the deformation, so a large force is required for the deformation.

Even if the outer cylinder is deformed into an elliptical shape, the cross section of the outer cylinder becomes closer to a perfect circle as it goes upward, and the vertical cross section of the outer cylinder becomes obliquely inclined. This means that the component (direction) of the upward force generated by the wedge action generated between the lower end of the outer cylinder and the tapered surface formed on the container is diagonal, that is, a horizontal component is generated. , the vertical force required to push up the cap decreases,
The force generated by the wedge action cannot be used 100% effectively. Therefore, this structure can only be applied to cases where the strength of the fit between the cap and the container is extremely low.

This idea was devised in view of the problems of the conventional caps mentioned above, and its purpose was to create an easy-to-use cap that allows the cap to be easily removed even if the strength of the mating between the cap and the container is sufficiently increased. The goal is to provide a container with a container.

In order to achieve the above objectives, this invention:
The cap body is provided with a flexible cylindrical body that has an inner diameter sufficiently larger than the outer diameter of its peripheral wall and is easily elastically deformed in the radial direction. It is attached with play fit. Then, the surface on which the lower end of the flexible cylindrical body contacts at the shoulder of the container is an inclined surface, and when the flexible cylindrical body is pressurized and bent in the radial direction, the flexible cylindrical body The structure is such that a force is applied to push the cap body upward.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

In the embodiment of this invention, the main body portion of the container 10 has a cylindrical shape, and a pedestal portion 11 is formed at the center of its upper surface portion to be one step higher than the periphery, and an open cylindrical portion is formed at the center of the pedestal portion 11 12 is formed protrudingly. The outer periphery of the distal end of the open cylindrical portion 12 is formed into a tapered shape, and an annular locking protrusion 13 is integrally formed continuous with this tapered surface. Further, an inclined surface 14 is formed on the outer peripheral shoulder portion of the platform portion 11 .

The cap 20 includes a cap body 30 and a flexible cylindrical body 4.
0. The cap body 30 is a synthetic resin molded product with sufficient rigidity, and includes a disk-shaped ceiling surface 31 with a diameter approximately the same as the outer diameter of the container 10, and a cylindrical peripheral wall portion that hangs below the ceiling surface 31. 32. The diameter of the peripheral wall portion 32 is considerably smaller than that of the ceiling surface 31.

Further, on the lower surface side of the ceiling surface 31 of the cap body 30, a cylindrical plug 33 is first formed at the center thereof. This cylindrical stopper 33 is connected to the open cylinder portion 12 of the container 10.
It fits into the center hole and closes it. Furthermore, a fitting cylindrical portion 34 that is one size larger than the outer diameter of the open cylindrical portion 12 is formed around the cylindrical stopper 33 . This becomes the main part of the fitting structure between the container 10 and the cap 20. That is, an annular locking protrusion 35 is integrally formed on the inner circumferential surface of the fitting cylinder 34, and the elastic and reversible connection between this locking protrusion 35 and the locking protrusion 13 on the container 10 side When engaged, the cap 20 is attached to the container 10.
It is removably fitted in the vertical direction.

The flexible cylindrical body 40 has a cylindrical shape with upper and lower ends open, and its inner diameter is sufficiently larger than the outer diameter of the peripheral wall 32 of the cap body 30, and its outer diameter is approximately equal to the outer diameter of the container 10. The height of the cap body is 3
It is larger than the peripheral wall portion 32 of No. 0. Furthermore, this is made of a relatively soft and rigid resin, and is easily elastically deformed in the radial direction. That is, when the outer periphery of the flexible cylinder 40 is pressed with a finger, the flexible cylinder 40 easily bends and deforms into an elliptical shape.

Furthermore, four fixing pins 41 are provided on the inner circumferential surface of the flexible cylinder 40 in a substantially radial shape and protrude toward the center. A stopper hole 36 is formed. By loosely fitting the stop pin 41 into the stop hole 36, the flexible cylindrical body 40 is attached to the outer peripheral portion of the peripheral wall portion 32 of the cap body 30.

To be more specific, the stop hole 36 is a long hole along the circumferential direction of the peripheral wall 32, and its width is equal to that of the stop pin 4.
The diameter is slightly larger than that of 1. Further, an introduction hole 37 is formed in the middle part of the elongated stop hole 36 in the shape of a slit reaching the lower end of the peripheral wall portion 32, and the stop hole 36 and the introduction hole 37 form a T-shape. . The width of the introduction hole 37 is slightly smaller than the locking pin 41. To attach the flexible cylinder 40 to the cap body 30,
First, the stop pins 41 are aligned with the introduction holes 37, and the stop pins 41 are strongly fitted from the introduction holes 37 toward the stop holes 36 while deforming the periphery of the introduction holes 37 to some extent. When the stop pin 41 reaches the stop hole 36, the width of the stop hole 36 is large, so the stop pin 41 reaches the stop hole 36.
1 is loosely fitted into the stopper hole 36. When the flexible cylindrical body 40 is attached to the cap body 30, there is a sufficient gap between the peripheral wall 32 and the flexible cylindrical body 40, and the upper end surface of the flexible cylindrical body 40 is close to the lower surface of the ceiling surface 31. is almost in contact with

In the state shown in FIG. 2A, the cap 20 is completely fitted into the container 10. In other words, the locking protrusion 35 on the cap 20 side passes over the locking protrusion 13 on the container 10 side, and the cap 20 is positioned at the correct closed position with respect to the container 10. In this state, the lower end surface of the flexible cylindrical body 40 is in contact with the immediate outside of the inclined surface 14 at the upper surface side outer circumferential portion of the container 10.

To remove the cap 20 from the above condition,
As shown in FIG. 2B, the flexible cylindrical body 40 is pressurized from both sides so as to be pinched between fingers, thereby bending it in the radial direction and deforming it into an elliptical shape. At this time, the lower end of the portion of the flexible cylindrical body 40 whose diameter has been reduced comes into sliding contact with the inclined surface 14 of the container 10, which is an uphill slope. Therefore, the reaction force that the flexible cylindrical body 40 receives from the container 10 is perpendicular to the inclined surface 14 and includes an upward component force. The upward force acting on the flexible cylinder body 40 acts on the upper surface of the retaining hole 36 formed in the peripheral wall portion 32 of the cap body 30 into which the retaining pin 41 of the flexible cylinder body fits, and causes the cap body 30 to It acts to push upward. This force pushes the cap 20 upward, the locking protrusion 35 elastically overcomes the locking protrusion 13, and the cap 20 is removed from the container 10.

At this point, a large force pushing up the cap 20 is generated due to the wedge effect caused by the contact between the inclined surface 14 and the flexible cylinder 40, so that the opening cylinder part 12 of the container 10 and the fitting cylinder part 34 of the cap 20 fit together. Even if the combined strength is sufficiently large, the cap 20 can be easily removed by pressing the flexible cylinder 40 from the outer periphery so as to pinch it.

Furthermore, in the embodiment described above, the stopper hole 36 is a long hole, which has the great effect of not hindering the deformation of the flexible cylinder 40. In other words, when the point of action that clamps the flexible cylinder 40 moves away from the position of the stop pin 41, the deformation of the flexible cylinder 40 causes the stop pin 41 to move away from the position of the stop pin 41.
However, since the stopper hole 36 is an elongated hole, this movement of the stopper pin 40 is not hindered. Therefore, there is no problem in pinching the flexible cylinder 40 from any direction.

Further, the structure for attaching the flexible cylinder 40 to the cap body 30 is not limited to the one using the introduction hole 37, and various other means can be considered. In addition, the container with a cap of this invention is not limited to a cylindrical type, but can be applied to any type of container.
The flexible cylinder 40 may be formed into a rectangular cylinder shape.

As explained in detail above, the container with a cap according to this invention is extremely easy to use, as even if the strength of the fit between the cap and the container is sufficiently increased, the cap can be easily removed. Become.

Furthermore, in the present invention, since the flexible cylinder is open at its upper and lower ends, the only thing that impedes the inward pressing force when deforming it into an elliptical shape is the self-elastic restoring force of the flexible cylinder itself. Since there is no restraining force due to the shape, it can be pressed with a relatively small force.

Further, when the flexible cylinder is deformed into an elliptical shape, its cross section becomes substantially the same in the vertical direction, and its longitudinal section is oriented in the substantially vertical direction. As a result, the push-up force generated by the wedge action has almost only a vertical component, and this force can be used almost 100% effectively.

Therefore, the flexible cylinder can be moved inward with a small force, which means that the cap can be removed with a small force, resulting in very good operability.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing a partially cut away container with a cap according to an embodiment of the invention;
The figure shows the state A of the same container with a cap when the cap is completely closed, and the operating state B when the cap is removed.
FIG. 10... Container, 14... Inclined surface, 20... Cap, 30... Cap main body, 32... Peripheral wall portion,
36...stopping hole, 37...introduction hole, 40...flexible cylinder, 41...stopping pin.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A cap in which the cap body is attached to the container in a vertically removable manner by elastic and reversible engagement between the locking protrusion on the cap body and the locking protrusion on the container. The cap body is provided with a flexible cylindrical body having an inner diameter sufficiently larger than the outer diameter of the peripheral wall thereof, easily elastically deformed in the radial direction, and having upper and lower ends opened. The cylindrical body is attached to the outer circumferential portion of the cap body by loosely fitting a pin and a stopper hole, and the surface on which the lower end of the flexible cylindrical body abuts at the shoulder of the container is an inclined surface, and the flexible cylindrical body 2. A container with a cap, characterized in that when the container is pressurized and bent in the radial direction, a force is applied to the flexible cylindrical body by the inclined surface to push the cap body upwardly. (2) The container with a cap according to claim 1, wherein the stopper hole is a long hole extending in the circumferential direction of the peripheral wall.