JPH0454113Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a small container that is filled with daily necessities such as food and cosmetics and is sold, and is equipped with a one-touch cap that is repeatedly attached and detached each time it is used. Regarding. In particular, a fitting with a locking mechanism satisfies the contradictory functions of making it easy to attach and detach the cap and sealing the contents, and also provides a psychological sense of stability to the user when using the cap device. Regarding containers.

[Conventional technology and its problems]

During transportation where the product is subject to strong shocks or vibrations, the cap and container are completely locked to ensure safety so that the contents do not leak, and this lock must be released when the consumer uses the contents of the container. A container with a so-called one-touch cap, which facilitates the attachment and detachment of the cap, is disclosed in, for example, Japanese Utility Model Publication No. 54-25252. According to this, a plurality of chevron-shaped cam pieces are provided protrudingly on the outer circumferential surface of the shoulder portion of the container, a hem portion of one side of the cam piece is cut out to form a locking portion, and the shoulder portion of the container is provided with a locking portion. An annular groove having a width matching the height of the locking part of the cam piece is provided, and on the side of the cap that fits into the annular groove, an annular groove is provided on the inner circumferential surface of the outer peripheral skirt part of the cap to fit into the groove of the shoulder part of the container. It has been proposed that a protrusion to be fitted is provided. Until this container reaches the consumer, the protrusion of the cap fits into the annular groove and enters the locking part of the cam piece to be securely locked. When you twist the cap in the direction to release it, the protrusion first becomes free from the locking part and the lock is released.
Next, the cam piece comes into contact with the uncut inclined surface of the adjacent cam piece and moves up along this, thereby releasing the engagement with the annular groove and allowing the cap to be removed.

However, in this structure, the height of the locking portion provided on the cam piece is set lower at the entrance than at the back to ensure that the projection is retained; When entering the room, it is first introduced in a state where it is pushed down slightly, and when it reaches the back, it is pushed back up a little. This means that
This causes the cap to lift up when the cap is locked.
There is a problem in terms of sealing the container.

Furthermore, in Japanese Utility Model Application No. 54-113842, a first locking protrusion and a second locking protrusion are provided adjacent to each other parallel to the axis below the male threaded portion of the container, and a locking groove is formed between them. In addition to the female threaded part that is screwed into the male threaded part, a protruding part of a separate member having elasticity in the radial direction is provided on the inner circumferential surface of the lid, and in the final stage of screwing the lid onto the container, the protruding part A container structure is disclosed in which the container is elastically deformed, climbs over the first locking protrusion, enters the locking groove, and is locked. According to this, after the male and female screws are fitted, the protrusion fits into the locking groove, and the rotation of the lid is prevented.

In this structure, when attaching and detaching the cover, the cover must be rotated to the same degree as normal screw fitting, and it cannot be said to be satisfactory as a one-touch cap. Furthermore, the number of parts is large, which poses a problem in terms of manufacturing cost.

Utility Model Application No. 53-33542 has a container mouth with a stopper ring that protrudes around the entire circumference, a plurality of lead strips connected to the stopper ring in the vertical direction, and an elastic body made of synthetic resin or the like. It consists of a lid with a first lid stopper and a second lid stopper formed vertically protruding from the inner peripheral surface, and in the final stage of screwing the two together, the first lid stopper gets over the stop ring. A container structure is disclosed in which the lid is moved downwardly to lock the lid.

With this structure, when attaching or removing the lid, it is necessary for the second lid stopper to climb over the rotation stopper ring, but since the structure is not designed to alleviate the climbing resistance, there are physical limitations on the height of the lid stopper. There are limits. Moreover, since the length of this lid stopper member is short,
The tip of the member is likely to wear out due to repeated opening operations, and in that case, the sense of resistance when stepping over the ring disappears, which has the drawback of giving the user a sense of psychological anxiety regarding the lock function.

[Means for solving problems]

The present invention solves these problems in the conventional technology, and combines the ease of attaching and detaching the cap with the sealing properties of the contents, and also provides the user with a psychological sense of stability when attaching the cap. The purpose of the present invention is to provide a combination of a cap and a container with a locking function that can provide a lock function.

The purpose of this is to protrude a plurality of cam pieces having a constant thickness in the radial direction on the outer peripheral surface of the neck of the container at equal intervals, while a cap fitted onto the container is fixed concentrically. In the combination structure of a container and a cap, the container and the cap are provided with an inner cylinder and an outer cylinder, and a projecting piece that can be engaged with the cam piece is provided on the inner peripheral surface of the inner cylinder,
The cam piece has a bottom on a flat part provided on the upper surface of the shoulder of the container below the neck, and a left slope that reaches the top with a relatively gentle slope upward to the right, and a slope from the top to the cam piece. The locking portion has a substantially mountain-like shape consisting of a right slope with a downward slope to the entrance of the notched locking portion, and the locking portion has a dike extending vertically across the entrance and the cam piece. It is surrounded by an upper wall cut out parallel to the flat part and a vertical wall connecting the upper wall and the flat part, and the radial thickness of the embankment is equal to the protrusion of the cam piece. The inner cylinder of the cap is divided at least in its lower part by a vertical slit into a plurality of strip-shaped members each having the protrusions at the lower end thereof, and the inner peripheral surface of the outer cylinder has: Achieved by a combination structure of a cap and a container, characterized in that a stop rib is protruded to limit outward deformation of the strip-shaped member within an elastic limit when the protruding piece crosses the embankment. be done.

[Effect]

The operation of the present invention will be explained next.

Until the container is delivered to the consumer, the protrusion on the inner cylinder of the cap is stably locked in the locking part of the cam piece provided around the neck of the container, so that the cap is not exposed. Left and right rotation and up and down movement are prevented, ensuring a tight seal of the container.

To open this cap, twist the cap slightly counterclockwise as you would with a normal screw-type cap, and the protrusion first climbs over the relatively low embankment at the entrance of the locking part and locks it in place. It escapes from the stop and is unlocked. When the cap is further rotated clockwise in this state, the projecting piece comes into contact with the left inclined surface of the cam piece located on the right side of the locking part and rises along this, so that the cap is removed from the container.

To reinstall the cap, place the cap over the neck of the container, push downward to lower the tabs to the flat part of the shoulder, and then twist the cap slightly clockwise to push the tabs up the embankment. All you have to do is climb over it, introduce it into the locking part, and lock it there. At that time,
Further clockwise rotation is prevented by the contact between the projecting piece and the vertical wall of the locking portion, giving the user a reliable sense of fitting stability.

When the cap is pressed down, even if the protruding piece and the cam piece are in the same position and the protruding piece touches either the left or right inclined surface, the protruding piece will be guided to the inclined surface by further pushing down the cap. As it moves, the cap rotates slightly to the left or right and descends until it reaches the flat part of the neck of the container, causing no problems.

The inner cylinder of the cap, on which the protruding piece is provided, is divided into a plurality of strip-shaped members by the slit, so when the protruding piece climbs over the embankment, the skirt part easily deforms elastically outward, making it easy to attach and remove the cap. becomes easier. The deformation of this skirt part is limited within the elastic limit by the stopper ribs of the outer cylinder surrounding the outside, so even after repeated use, there is little fatigue of the material, making it possible to extend the lifespan. Become.

〔Example〕

Hereinafter, the present invention will be explained in more detail based on preferred embodiments shown in the drawings.

1 to 4 show embodiments of the present invention.

The container 1 is a plastic, glass or metal bottle, can, tube, etc. filled with daily necessities such as food or cosmetics, and has a small diameter neck 3 with an opening 2 at the top and a shoulder section following this. It has 4. An annular groove 5 is provided around the outer periphery of the neck 3, and below the annular groove 5, three cam pieces 6 are provided at equal intervals. The cam piece 6 protrudes with a certain thickness in the radial direction of the container, and its front shape is substantially mountain-shaped. That is, the bottom side coincides with the flat part 4a extending along the top surface of the shoulder part 4 of the container, and the left side forms a right inclined surface 6c having an upward slope to the right up to the apex 6a. On this cam side 6,
A locking portion 7 having an entrance is provided directly below the back right inclined surface 6c. This locking portion 7 is connected to the right inclined surface 6.
An embankment 8 extending vertically across the entrance provided below c, a horizontal upper wall 9 provided by cutting out the cam piece 6, an inner wall 10 also vertical, and the flat portion 4a. It is a surrounded recess and has the function of accommodating a protrusion of a cap, which will be described later.
The details of this locking part 7 are shown in FIG.
The thickness of the embankment 8 protruding from the neck 3 is set to about half the thickness of the cam piece 6.

On the other hand, the cap 11 that is fitted onto this is made of polyethylene, polypropylene, styrene resin, etc.
It is manufactured by a known injection molding method from thermoplastic resin such as ABS resin, and includes a top wall 12, a sealing ring 20 fixed concentrically perpendicularly to the top wall, and an innermost cylinder 1.
6. It is composed of an inner cylinder 13 and an outer cylinder 18.

The sealing ring 20 has the function of fitting into and sealing the opening 2 of the container when the cap 11 is fitted into the neck 3 of the container, and the innermost cylinder 16 has a function of sealing it by fitting into the opening 2 of the container. It has a protruding inner ring 17,
When the cap 11 is fitted onto the neck of the container, the inner ring 17 fits into the annular groove 5 to position the cap 12 in the vertical direction.

The inner cylinder 13 is divided into three by a vertical slit 15 cut downward from the middle of its height into a plurality of strip-shaped members 13a, each of which has the cam piece 6 on its lower inner peripheral surface. protruding piece 14 that can be engaged with
is formed.

The outer cylinder 18 is fixed to the outside of the inner cylinder 13 at a sufficient distance from the inner cylinder 13, and has stop ribs extending vertically on its inner peripheral surface at positions corresponding to the respective strip-shaped members 13a of the inner cylinder. It has 19. The gap between the inner cylinder 13 and the stopper rib 19 is set to be approximately equal to the protruding thickness of the embankment 8.

To fit the cap 11 into the container 1, as usual, the cap 11 is pushed down so that the inner cylinder 13 covers the neck 3 of the container, and then the cap 11 is lowered to the position of the protruding piece 14 and the cam piece 6. During the effect, when the protruding piece 14 and the cam piece 6 come into contact, the protruding piece 14 slides on either the left or right inclined surface 6b, 6c of the cam piece 6, and the cap 11 accordingly slides on the right or left inclined surface 6b, 6c. It descends while rotating to the left and smoothly reaches the flat portion 4a. At this position, the inner ring 17 of the innermost cylinder 16 fits into the annular groove 5 of the neck 3 of the container, forming an auxiliary fitting part 21 (see Figure 3), and determining the vertical position of the cap 11. . At the same time, a sealing ring 20 is inserted into the opening 2 of the container and seals it.

Next, when the cap 11 is turned to the right as when tightening a screw-type cap, the projection 14 comes into contact with the embankment 8 provided on the cam piece 6. When the cap is turned with even more force, the strip-shaped member 13a is pushed outward by the force applied to the protrusion 14 and elastically deforms.
The projecting piece 14 moves horizontally while being guided by the upper wall 9, climbs over the embankment 8, and enters the locking part 7, forming the main fitting part 22. During this operation, the auxiliary fitting 21 remains in place and the cap does not come off. Since the inside of the locking part 7 has the same outer diameter as the neck part 3, the deformed strip-shaped member 1
3a returns to its original state and becomes stable.

In this state, the cap 11 is prevented from rotating clockwise by the contact between the projection 14 and the inner wall 10 of the locking portion 7.
Upward movement is prevented by the upper wall 9 of the locking part 7. Furthermore, under the force of normal vibration during transportation,
Since the projecting piece 14 does not climb over the embankment 8 and separate from the locking part 7, the container 1 is locked in a sealed state.

To remove the cap 11 from this locked state,
First, when the cap 11 is turned slightly strongly to the left, the projecting piece 14 climbs over the embankment 8 and escapes from the locking part 7 to the flat part 4a, and then comes into contact with the left inclined surface 6b of the adjacent cam piece 6, and is guided to this. Do it gradually. In this process, the inner ring 17 of the innermost cylinder 16 comes off the annular groove 5, and the cap 11 is lifted out of the container 1.

The deformation of the strip-shaped member 13a when the above-mentioned protruding piece 14 climbs over the embankment 8 is limited within the elastic limit by the stopper rib 19 provided on the outer cylinder 18, so that irrecoverable excessive deformation is prevented. material fatigue is reduced.

In the above example, the annular groove 5 of the container neck and the inner ring 17 of the innermost cylinder of the cap are used to form the auxiliary fitting part 21, but instead of this, an annular projection is formed on the neck. An annular projection on the cap side may also be provided. Alternatively, like the inner cylinder 13, the innermost cylinder may be separated into a plurality of strip-shaped members by a slit to facilitate deformation during fitting.

[Effect of idea]

According to the present invention, the following effects can be obtained.

1. The rotation angle of the cap can be reduced when attaching and detaching the cap.

2. There is less wear on the fitting part when attaching and detaching the cap, so the locking function will not deteriorate even after repeated use.

3 Since the inside of the cylinder is configured as a plurality of strip-shaped members, the protruding piece deforms easily when climbing over the embankment, so the protruding thickness of the embankment can be increased to increase the sense of fitting stability during operation. .

4. Since it has a double structure of an inner cylinder and an outer cylinder, the pressing force of the fingers is not transmitted to the inner cylinder when rotating the cap, making it easier to operate. Furthermore, the deformation of the strip-shaped member of the inner cylinder is suppressed within the elastic limit by the stopper rib provided on the outer cylinder, so that fatigue of the material is reduced.

5. The cap can be manufactured as a single component by integral molding of resin, which reduces manufacturing costs.

6. Since the main/auxiliary fitting portions are formed at two locations with different vertical and radial positions, a stable lock can be achieved and the cap can be attached and detached smoothly.

[Brief explanation of the drawing]

Fig. 1 shows the structure of a container according to an embodiment of the present invention, in which a shows a front view and b shows a plan view, and Fig. 2 shows the structure of the cap, in which a shows a front view and b shows a plan view. FIG. 3 is an enlarged sectional view showing the fitted state of the cap and the container, and FIG. 4 is an enlarged perspective view showing the structure of the cam piece and the locking part in the present invention. 1... Container, 2... Opening, 3... Neck, 4...
...shoulder part, 4a... flat part, 5... annular groove, 6...
Cam piece, 7... Locking part, 8... Embankment, 9... Top wall, 10... Inner wall, 11... Cap, 12...
Top wall, 13... Inner cylinder, 13a... Strip-shaped member, 1
4... protrusion, 15... slit, 16... outer cylinder,
17... Inner ring, 18... Innermost cylinder, 19...
stopper rib, 20... sealing ring, 21... auxiliary fitting part, 22... main fitting part.

Claims (1)

[Claims for Utility Model Registration] A plurality of cam pieces having a constant thickness in the radial direction are protruded at equal intervals on the outer peripheral surface of the neck of the container, while,
The cap that is fitted onto the container includes an inner cylinder and an outer cylinder that are fixed concentrically, and the inner peripheral surface of the inner cylinder has:
In the combination structure of a container and a cap, which is provided with a projecting piece that can be engaged with the cam piece, the cam piece has a base on a flat part provided on the upper surface of the shoulder of the container below the neck, It has a substantially mountain shape, consisting of a left slope with a relatively gentle upward slope to the top and a right slope with a slope downward to the right from the top to the entrance of the locking part cut out in the cam piece, and The locking part includes an embankment provided vertically across the entrance, an upper wall provided by cutting out the cam piece parallel to the flat part, and a vertical embankment connecting the upper wall and the flat part. the cap is surrounded by a wall, the radial thickness of the embankment is smaller than the protruding thickness of the cam piece, and the inner cylinder of the cap is surrounded by a vertical slit at least at the lower part of the cap, and the inner cylinder of the cap is surrounded by a vertical slit at least at the lower part of the cam piece. The outer cylinder is divided into a plurality of strip-shaped members, and a stop rib is provided on the inner circumferential surface of the outer cylinder to limit outward deformation of the strip-shaped member to within an elastic limit when the protruding piece climbs over the embankment. A combination structure of a cap and a container characterized by a protruding structure.