JP4781645B2 - Container with safety cap - Google Patents

Description

  The present invention relates to a container that contains various liquids, powders, and the like and seals the inside by screwing the cap to the main body, and in particular, this container prevents inadvertent loosening of the cap. This has a mechanism for preventing looseness.

  An example of a container having such a loosening prevention mechanism is a commercially available mouthwash container shown in FIG. Here, FIG. 3 (a) shows the neck portion of the container body viewed from the side, FIG. 3 (b) shows the neck portion viewed from above, and FIG. 3 (c) shows the cap on the side surface. FIG. 3 (d) shows the cap viewed from below. As shown in FIGS. 3 (a) and 3 (b), the container 20 has a pair of ratchets 22 and 23 provided symmetrically with respect to the center of the container mouth in the vicinity of the base of the container neck portion 21, and FIG. As shown in (c) and (d), the lower end of the cap 24 is provided with a pair of projecting pieces 25 and 26 provided symmetrically with respect to the center of the cap 24, respectively.

  When closing the container 20 with the cap 24, if the container 20 is rotated in a predetermined direction, the ratchets 22, 23 and the projecting pieces 25, 26 are engaged with each other, and then the cap 24 is rotated in the opposite direction to the closing. Even so, the protrusions 25 and 26 hit the ratchets 22 and 23 and the rotation of the cap 24 is prevented. This prevents the cap 24 from loosening. Further, when removing the cap 24, the cap 24 is deformed by pressing the holding portions 27 and 28 provided on the side surface of the cap 24 at 90 ° away from the projecting pieces 25 and 26 with a finger. After releasing the engagement between the ratchets 22 and 23 and the projecting pieces 25 and 26, the cap 24 is rotated in the direction opposite to that when the cap 24 is closed.

  However, in this container, when removing the cap 24 as described above, it is necessary to press the holding portions 27 and 28 with a certain amount of force with a finger and rotate the cap 24 while it is deformed. Compared to a conventional container that does not have a loosening prevention mechanism, labor is required and the operation is troublesome. At this time, if an excessive force is applied to the cap 24, the cap 24 may be damaged. Similarly, a certain amount of force is required to engage the ratchets 22 and 23 and the projecting pieces 25 and 26 when the container is closed. Furthermore, the cap 24 must be made of a relatively soft and elastic material so that it can be easily deformed when it is removed, which limits the materials that can be used.

In addition, there is one described in Patent Document 1 as an example of a container having a loosening prevention mechanism. This container is provided with a thread on the inner side of the cap that engages with a thread provided on the container neck, and a ratchet tooth that engages with each other on both the cap and the container neck so that the container is closed. It is what you hold. However, although this container can also effectively prevent the cap from loosening, like the container 20 described above, there is a problem that a certain amount of force is required for the opening and closing operation.
Japanese Patent No. 3122369

  An object of the present invention is to solve the above-described problems, to prevent the cap from loosening with a relatively simple configuration and simple operation, and to prevent the cap from loosening with an operation at the time of opening and closing. The present invention proposes a container having a cap loosening prevention mechanism that can be carried out in substantially the same manner as an ordinary container that does not have the above-mentioned means.

That is, the present invention includes a container main body having a neck portion protruding in a substantially cylindrical shape, a cap for closing the neck portion, a screw thread provided on an outer surface of the neck portion, and an inner surface of the cap. In a container that seals the inside of the container body by engaging the screw thread, a cylindrical slider is provided on the outer periphery of the cap so as to surround the cap, and the slider has an outer periphery of the cap on its inner surface. along the teeth provided on the surface, and having teeth meshing slidably in the axial direction of the neck, on the inner side lower portion of the slider, by projection engages which is provided on the inner surface lower end of the cap, the an annular ridge is provided for preventing falling off from the cap, further, the inner peripheral lower end of the slider, set the annular ridge cap provided on the slider slider down to the cap And when engaging the projection, by meshing with the outer peripheral teeth provided on the neck portion, while preventing rotation of the cap relative to the container body, when shifted upward pulling the slider relative to the cap, the outer periphery By disengaging the teeth, the inner peripheral teeth that allow the cap to rotate relative to the container body are provided .

In the container according to the present invention, in order to prevent the cap from loosening, the slider as the locking member provided on the cap is moved in the axial direction of the container neck portion, and the outer peripheral teeth as the locking portion provided on the container neck portion. Or it is supposed to engage with or release the annular ridge . Therefore, even though the cap can be prevented from being loosened, the cap can be attached and detached by the same operation as a normal container having no cap loosening prevention mechanism.

In the present invention , the locking member is a cylindrical slider that is movable in the axial direction of the neck portion along the outer peripheral surface of the cap, thereby facilitating an operation for preventing the cap from loosening. Can do.

In the present invention , the engaging portion may be an outer peripheral tooth provided on the outer periphery of the container neck portion, and an inner peripheral tooth that meshes with the outer peripheral tooth may be provided on the slider inner surface. As a result, the cap loosening prevention mechanism can be realized with a simple configuration, and the cap opening / closing operation itself can be performed in the same manner as a normal container.

Further, in the present invention , the locking portion is an annular ridge having at least one notch provided on the outer periphery of the container neck, and at least one of the ridges fitted on the slider inner surface with the notch of the ridge. Two protrusions may be provided. Also by doing so, the cap loosening prevention mechanism can be realized with a simple configuration, and the cap opening / closing operation itself can be performed in the same manner as a normal container.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a cross-sectional view showing a container according to the present invention. This container 1 includes a container body 2 and a cap 3, and by rotating the cap 3, the thread 5 provided on the outer peripheral surface of the neck portion 4 of the container main body 2 and the thread provided on the inner peripheral surface of the cap 3 6 is engaged or released, and the cap is attached or detached.

  A substantially cylindrical slider 7 is provided on the outer periphery of the cap 3. The slider 7 has teeth 8 on the inner surface, and the teeth 8 mesh with the teeth 9 provided on the outer peripheral surface of the cap 3. Accordingly, the slider 7 can slide up and down on the outer peripheral surface of the cap 3 along the central axis XX of the container 1. Further, the annular ridge 10 provided at the inner lower portion of the slider 7 is engaged with the ridge 11 provided at the lower end of the inner surface of the cap 3, thereby preventing the slider 7 from being detached from the cap 3.

  Further, the slider 7 is provided with an inner peripheral tooth 12 at the lower end of the inner periphery, and an outer peripheral tooth 13 near the base of the container neck portion 4. By engaging these teeth 12 and 13, loosening of the container can be prevented.

  Next, an operation for preventing the cap 3 from loosening in the container 1 will be described with reference to FIG. First, in the state shown in FIG. 2 (a), the container 1 is closed by the cap 3. Here, the slider 7 is in a state of descending downward, and the inner peripheral teeth 12 are engaged with the outer peripheral teeth 13 provided on the neck portion 4 of the container 1, so that the cap 3 cannot rotate and the cap 3 is loosened. It is preventing.

  In order to remove the cap 3, as shown in FIG. 2 (b), first, the slider 7 is shifted upward, and the meshing between the inner peripheral teeth 12 and the outer peripheral teeth 13 is released. Thereby, the cap 3 can be rotated. Thereafter, the cap 3 may be rotated in the same manner as a normal container cap to disengage the threads 5 and 6 (see FIG. 2 (c)). In addition, what is necessary is just to perform operation contrary to the above, when closing a container.

  As described above, in the container according to the present invention, it is possible to realize a loosening prevention mechanism that can reliably prevent the cap from loosening with a relatively simple structure, and the cap attaching / detaching operation itself is the conventional loosening prevention. It can be carried out in the same manner as a container having no mechanism.

  The present invention is not limited to the above-described embodiment. For example, instead of a combination of the inner peripheral teeth of the slider and the outer peripheral teeth of the container body neck for preventing the cap from loosening as a cap loosening prevention mechanism. Further, an annular protrusion having at least one notch portion on the outer periphery of the neck portion may be provided on the slider inner surface with a protrusion that fits with the notch portion.

FIG. 3 is a cross-sectional view showing a container according to the present invention. It is a figure which shows the removal procedure of the cap in the container by this invention. It is a figure which shows a part of conventional container which has the loosening prevention mechanism of a cap.

Explanation of symbols

1,20 containers
2 Container body
3,24 cap
4,21 Neck of container body
5 Neck thread
6 Cap threads
7 Slider
8 Slider teeth
9 Cap teeth
10 Slider annular ridge
11 Cap ridge
12 Inner teeth of the cap
13 Neck circumference teeth
22, 23 Ratchet
25, 26
27, 28 Holding part

Claims (1)

A container body having a neck portion protruding in a substantially cylindrical shape;
A cap for closing the neck portion;
In the container that seals the inside of the container body by engaging the screw thread provided on the outer surface of the neck part and the screw thread provided on the inner surface of the cap,
A cylindrical slider is provided on the outer periphery of the cap so as to surround the cap.
The slider, on its inner surface, along the teeth provided on the outer peripheral surface of the cap, which has teeth which mesh slidably in the axial direction of the neck portion,
The inner side lower portion of the slider, by projection engages which is provided on the inner surface lower end of the cap, an annular ridge which prevents the falling off from the cap is provided, further,
At the lower end of the inner periphery of the slider, when the slider descends with respect to the cap and the annular protrusion provided on the slider engages with the protrusion provided on the cap, the slider engages with the outer peripheral tooth provided on the neck portion. Therefore , when the slider is lifted with respect to the cap and shifted upward, the engagement with the outer peripheral teeth is released , thereby allowing the cap to rotate with respect to the container body . A container characterized in that peripheral teeth are provided .

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