JPS5923713Y2 - safety cap - Google Patents

Description

[Detailed description of the invention] This invention relates to a safety cap used for containers such as medical devices.

In an ordinary household, a child or other child may hold a container of medicine, etc. in their hands,
Accidents such as opening the cap and taking out or spilling the medicine inside the container may result in skin damage from the irritating medicine or accidental ingestion of the contents. was.

In order to prevent such accidents, various safety caps that are difficult for children and the like to open have been devised.

However, conventional safety caps have a large number of parts and
The problem was that the structure was complicated.

This idea was made in view of the above-mentioned conventional problems, and includes an inner cap that is screwed onto the opening of the container body, and an inner cap that is rotatable and slidable in the length direction. The outer cap to be accommodated is hollow, and the upper outer periphery of the inner cap is provided with a plurality of longitudinal engagement grooves whose peaks are approximately aligned with the outer surface of the female threaded portion, and the inner periphery of the corner of the outer cap is provided with the above-mentioned retainer. In addition to providing a plurality of engaging pieces that can be engaged with and detached from the mating groove, an outer flange is provided at the lower end of the inner cap to protrude outward from the outer surface of the female threaded portion, and an outer flange is provided at the lower inner periphery of the outer cap. is provided with an inner flange that locks the outer flange of the inner cap, and also has an inner flange that contacts the outer periphery of the inner cap at the lower part of some retaining pieces on the inner periphery of the outer cap without engaging with the retaining groove. The conventional problems can be solved by providing a friction piece that generates a light frictional force and disposing an elastic piece between the outer cap and the inner cap to release the engagement between the engagement groove and the engagement piece. It has a simple structure, easy to use, high reliability, and high strength, and the outer cap can be easily removed except when the inner cap is tightly screwed onto the container body or when the tightly screwed inner cap is removed. It is an object of the present invention to provide a safety cap in which the inner cap can be easily operated as usual without pressing the cap, and the fitting and assembly work of the outer cap to the inner cap is easy.

Hereinafter, this invention will be explained in detail based on an embodiment shown in the accompanying drawings.

In the drawings, the symbol B indicates the container body, and the symbol C indicates the cap.

The inside of the container body B is hollow, and a male screw 2 is provided on the outer periphery of the opening.

The cap C is composed of an inner cap 3 that is screwed onto the container body B, and an outer cap 4 that rotatably and slidably accommodates the inner cap 3, and The lower end of the inner cap 3 is an opening, and a female thread 6 is provided from the end of the opening to an appropriate position inside the inner cap 3.

Further, an outer flange 7 is provided on the outer periphery of the lower end of the inner cap 3.
is provided to protrude outward from the outer surface 6a of the female thread 6 portion, and on the outer periphery of the upper part, a longitudinal engagement groove 8. 6a
A plurality of them are provided in a radial manner, almost corresponding to the .

Furthermore, a backing material 10 is adhered to the inside of the closing surface 9 of the inner cap 3.

On the other hand, one end of the outer cap 4 is an opening, and the other end is a closed surface 12, and the lower end of the outer flange 7 of the inner cap 3 is locked inside the end of this opening. An inner flange 13 is provided inside the closing surface 12 to press the outside of the closing surface 9 of the inner cap 3.
Elastic piece 14.1 for engaging the outer collar 7 with the inner collar 13
4... is provided protrudingly.

Further, the upper part of the inner periphery of the outer cap 4, more specifically, the inner periphery of the corner, is provided with engagement grooves 8, 8 and 8 provided in the inner cap 3.
. . . Engaging pieces 15, 15, .

Therefore, in the cap C configured as described above, the inner cap 3 is pressed by the elastic force of the elastic pieces 14, 14, etc. provided protrudingly within the outer cap 4. At the same time that the outer flange 7 and the inner flange 13 of the outer cap 4 are engaged, the engagement grooves 8, 8 and 8 of the inner cap 3 are engaged.
... are disengaged from the engaging pieces 15, 15, etc. in the outer cap 4, so that both caps can freely rotate relative to each other.

In addition, friction pieces 16, 16, which contact the outer periphery of the inner cap 3 without substantially engaging with the engagement groove 8, are provided at the lower part of some of the engagement pieces 15, 15, and this friction Piece 16
．． 16... is configured to generate a light frictional force on the outer periphery of the inner cap 3.

Next, the operation of this invention will be explained.

The state shown in the figure shows the state in which the cap C is screwed onto the container body B to close the container body B. In this state, the inner cap 3 has its female screw 6 screwed into the male screw 2 of the container body B. The outer cap 4 has an elastic piece 14 projecting therein.
14... is pushed upward (upward in the figure) with respect to the inner cap 3.

Therefore, the inner cap 3 and the outer cap 4 are prevented from coming apart by the engagement between the outer flange 7 and the inner flange 13, and the engagement grooves 8, 8... and the engagement pieces. 15
．． The engagement with 15... is forcibly released, and mutual rotation is made free.

Here, a description will be given of an action for preventing the cap C from detaching due to an erroneous operation.

In the state shown in the figure, even if the cap C is rotated relative to the container body B, the inner cap 3 and the container body B are firmly screwed together (we will discuss later if they are weakly screwed). Moreover, since there is nothing to prevent the inner cap 3 and outer cap 4 from rotating, the inner cap 3 and outer cap 4 only rotate relative to each other.

Therefore, even if the cap C is rotated, the inner cap 3 and the container body B remain in the same state, and their screw connection will not be loosened.

Next, the operation for separating the cap C from the container body B in order to take out the contents will be explained.

To open the container, the inner cap 3 must be rotated relative to the container body B, but in order to do so, the outer cap 4 must be rotated against the container body B against the elastic force of the elastic pieces 14, 14... After pressing toward the outer cap 4 and the container body B, the outer cap 4 and the container body B may be rotated while maintaining the pressing force.

By this operation, the engaging pieces 15, 15... are connected to the engaging groove 8,
8..., so the inner cap 3
The mutual rotation of the inner cap 3 and the outer cap 4 is prevented, and the inner cap 3 and the outer cap 4 rotate integrally.

Therefore, the relative rotation between the outer cap 4 and the container body B is
Since the relative rotation between the inner cap 3 and the container body B is directly transmitted to the inner cap 3, the screwing between the inner cap 3 and the container body B is loosened and the container is opened.

Moreover, the operation for closing the container body B can be performed by performing the operation opposite to the operation for opening the container described above.

When the screwing between the inner cap 3 and the container body B is sufficiently loosened and the screwing force is weakened, the friction pieces 16, 16, which are in contact with the outer periphery of the inner cap 3 without engaging the retaining groove 8・
The inner cap 3 and outer cap 4 can be rotated almost integrally by the light frictional force.

Therefore, when opening the container, after releasing the strong screw connection between the container body B and the inner cap 3, the engagement grooves 8, 8... and the engagement pieces 15, 15... The inner cap can be removed by simply rotating the outer cap 4 while it is unfastened, that is, without pressing the outer cap 4.

3 can be rotated to open the cap.

In the above, the engagement grooves 8, 8... and the engagement pieces 15, 15...
An example has been described in which the engagement with the outer cap 4 is released by the elastic pieces 14, 14, etc. integrally provided inside the closing surface 12 of the outer cap 4, but in this example, the outer cap 4 is This is a relatively effective configuration when the outer cap 4 is made of a certain material, and if the outer cap 4 is made of a less flexible material, an elastic piece such as a leaf spring may be interposed.

As described above, this invention accommodates the inner cap rotatably and slidably in the length direction within the outer cap, and allows the two to be engaged and detached by the engagement groove and the engagement piece. In addition, since an elastic piece is disposed between the two to disengage the engagement groove and the engagement piece, the inner cap and the outer cap are normally released from each other by the elastic piece.
Both rotate idly, and it is not possible to open the container simply by rotating the outer cap and the container relative to each other.

In addition, in order to open the cap, it is necessary to press the outer cap against the elastic force of the elastic piece and rotate it in the opening direction, so children may play with it. This will prevent you from accidentally opening the bottle while you are in the room.

Furthermore, when the pressure on the outer cap is released, the engagement between the engagement groove and the engagement piece is reliably released by the elastic piece, so it is possible to provide a safety cap with a simple structure and high reliability. This has great practical effects.

In addition, a friction piece is provided at the bottom of the retaining piece, which contacts the outer periphery of the inner cap without engaging the retaining groove, so that the inner cap can be tightly screwed onto the container body, or the inner cap can be tightly screwed onto the container body. Except when removing the inner cap, the inner cap can be easily operated as usual without pressing the outer cap.

In addition, this kind of cap has low screw precision, and if you push the inner cap even a little, the frictional resistance between the female thread and the male thread increases and the smooth rotation of the inner cap is likely to be impaired. Since it is sometimes not necessary to press the outer cap and apply pressure to the inner cap as described above, the inner cap can always be operated smoothly without any trouble.

Furthermore, since the engaging piece is provided on the inner periphery of the corner of the outer cap and a friction piece is provided at the bottom of this, the strength of not only the engaging piece itself but also the entire outer cap is strong, and the internal thread of the inner cap is Since the outer surface of the portion and the ridges constituting the engagement groove are formed to almost coincide with each other, and the outer flange is provided to protrude outward, fitting (assembly) of the outer cap to the inner cap is facilitated. Easy to work with.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of this invention. C...Cap, 2...Male thread, 3...Inner cap, 4...Outer cap, 6...Female thread, 6a...
Outer surface, 7...Outer flange, 8...Engagement groove, 8a...Mountain part, 13...Inner flange, 14...Elastic piece, 15...
Engagement piece, 16...friction piece.

Claims (1)

[Scope of utility model registration request] The inner cap 3 consists of an inner cap 3 that is screwed onto the opening of the container body B, and an outer cap 4 that rotatably and slidably accommodates the inner cap 3.
A plurality of longitudinal engaging grooves 8 are provided on the upper outer periphery of the outer cap 4, and a plurality of longitudinal engaging grooves 8 are provided in which the crests 8a are substantially aligned with the outer surface 6a of the female thread 6 portion, and the engaging grooves 8 are provided on the inner periphery of the corner of the outer cap 4. A plurality of removable retaining pieces 15 are provided, and an outer flange 7 is provided at the lower end of the inner cap 3 so as to protrude outward from the outer surface of the female thread 6 portion, and the lower inner periphery of the outer cap 4 is provided. is provided with an inner flange 13 that locks the outer flange 7 of the inner cap 3, and is provided with an inner flange 13 that locks the outer flange 7 of the inner cap 3, and the engagement groove 8 is not engaged with the lower part of some of the retaining pieces 15 on the inner periphery of the outer cap 4. A friction piece 16 is provided in contact with the outer periphery of the inner cap 3 to generate a light frictional force, and between the outer cap 4 and the inner cap 3, the engagement groove 8 and the engagement piece 15 are disengaged. A safety cap characterized in that an elastic piece 14 is arranged.