JPS6119084Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is concerned with a structure that prevents the cap screwed onto the container opening from loosening and prevents tampering.
In detail, when the cap is completely tightened, it stops at a predetermined position and does not shift in the circumferential direction, and the position mark can be confirmed through the cap's observation window to prevent the cap from loosening and prevent unauthorized opening. It's about structure.

"Conventional technology" Conventionally, the cap attached to the mouth of the container was
They are mass-produced by means such as injection molding using relatively soft synthetic resin materials (eg, polyethylene, polypropylene, etc.). This cap is made of synthetic resin, so it has a small coefficient of friction, and
Since it is easy to elastically deform, there is a problem in that it easily loosens due to external factors such as vibration and temperature changes.

Therefore, as a means to solve such problems, for example, Japanese Utility Model Application Publication No. 55-53762 has been proposed. This is a ridged stopper consisting of an inner stopper that tightly fits and closes the bottle opening (spout) and an outer stopper that is screwed into the inner stopper. The outer plug is provided with a locking piece that fits into the recess, and when the outer plug is screwed into the inner wall and fully tightened, the outer plug protrudes with a predetermined gap and forms at least one recess. A lock piece provided on the stopper is guided by a guide protrusion on the inner stopper and fits into a recess to prevent the outer stopper from loosening unnecessarily.

By the way, this type of container has a structure that allows the contents to be easily taken out by loosening the cap, so if the container is used for high-end cosmetics or foodstuffs, it is difficult to open the cap at retail stores. The contents were used for trial use, and there was a risk that the amount of contents might decrease, the contents might change in quality, or foreign matter might get mixed in.

As a solution to this problem, for example, the spout (take-out port) formed in the inner plug may be sealed with a lid integrated with the inner plug, or
As disclosed in Publication No. 6276, a bell-shaped stopper that is separate from the inner stopper is fitted from below the spout, and after the stopper is taken out, the stopper is Some are known that have a structure that prevents them from fitting into the exit.

``Problems that the invention seeks to solve'' However, in these conventional examples, in order to have both the function of preventing the cap from loosening and the structure to prevent tampering, an inner stopper is used to close the bottle mouth. The inner plug must be sealed by a lid body integrated with the inner plug or a separate plug body, and the inner plug and outer plug must be provided with a recess and a lock piece that fits into the recess. There were problems such as the structure becoming complicated. Moreover,
As the number of parts increases, the number of man-hours required for assembly increases, resulting in problems such as unsatisfactory costs.

Additionally, these conventional structures have problems such as the inability to check whether the cap has been opened from the outside while the cap is tightened.

The purpose of this invention is to solve the above-mentioned problems and to provide the cap with the functions of preventing both the cap from loosening and the cap from being tampered with.

"Means for solving the problem" Therefore, the present invention forms a small diameter outer circumferential surface that is slightly smaller in diameter than the other outer circumference at the upper end of the outer circumference of the mouth of the container body, and has a locking protrusion on this small diameter outer circumferential surface. and a rotation preventing protrusion is formed at a position away from this loosening preventing protrusion in the tightening direction of the male thread of the mouth, respectively,
A resistance protrusion is formed between these two protrusions, and this resistance protrusion has a vertical flat locking surface extending radially outward of the mouth portion on the locking protrusion side, and a guide slope on the rotation preventing protrusion side. Further, a position mark is formed on a part of the outer circumferential surface of the opening, and a locking protrusion is provided on the inner circumferential surface of the upper part of the cap that is screwed into the opening, depending on the rotational position of the cap. An engaging protrusion is formed to make elastic contact with the resistance protrusion and the rotation stopper protrusion, respectively, and when the engagement protrusion is engaged between the rotation stopper protrusion and the resistance protrusion of the mouth portion of the cap, A viewing window is formed through which the position mark can be viewed, and the rotational torque when the engaging protrusion of the cap overcomes the resistance protrusion is set to such a level that it cannot be easily rotated by human power such as a hand or finger. The size is set to such an extent that it can be rotated using means.

"Function" When the container is stored, the engagement projection is located between the rotation stopper projection and the resistance projection, and at this time, the position mark on the mouth part is visible through the peephole of the cap.

Next, when a user or the like rotates the cap in a direction to loosen it, the engaging protrusion rides over the guide slope of the resistance protrusion and comes into contact with the locking protrusion and receives resistance. This locking protrusion has a resistance force that prevents the cap from loosening, and when the cap is rotated with a strong force due to this resistance force, the engaging protrusion overcomes the locking protrusion, and the cap can then be loosened freely.

When the cap is again placed over the mouth and rotated in the tightening direction, the engaging protrusion passes over the locking protrusion and comes into contact with the resistance protrusion and is locked. At this time, the engaging protrusion cannot overcome the locking surface with normal force (manual force with fingers, etc.), so once
When the cap is loosened and the cap is again screwed onto the mouth, the engagement projection is located between the locking projection and the resistance projection, making it impossible to confirm the position mark through the viewing window. That is, if the position mark is not visible before the container is sold to a user, it is clear that the cap has been loosened once.

``Example'' This invention will be described below based on an example shown in the drawings.

1 and 2 show a first embodiment of this invention, in which reference numeral 1 indicates a container body, reference numeral 2 indicates a mouth portion, and reference numeral 3 indicates a male thread. Further, a small-diameter outer circumferential surface 4 having a slightly smaller diameter than the other outer circumferences is formed at the upper end of the outer circumference of the mouth portion 2, and on this small-diameter outer circumferential surface 4, a locking protrusion 5 is formed, and a male thread 3 is inserted from the loosening protrusion 5 into the small-diameter outer circumferential surface 4. A rotation stopper projection 6 is provided at a position apart in the tightening direction, and both of these projections 5,
Resistance protrusions 7 are formed between the locking protrusions 6 and 6, and the resistance protrusions 7 have vertical flat locking surfaces 8 extending outward in the radial direction of the opening 2 on the locking protrusion 5 side.
is formed, and a guide slope 9 is formed on the rotation stopper projection 6 side. and a concave position mark at any position on the small diameter outer circumferential surface 4 (any shape can be used as long as it can indicate the position)
10 are formed.

Also, the symbol 11 in the figure is a cap.
This cap 11 is formed with a female thread 12 corresponding to the male thread 3, and the locking protrusion 5, rotation preventing protrusion 6, and resistance protrusion 7 are formed on the upper inner peripheral surface depending on the rotational position of the cap 11. An engaging protrusion 13 for elastic contact is formed, and
A peephole 14 is formed through which the position mark 10 can be viewed when the engagement protrusion 13 is engaged with the rotation stopper protrusion 6 and the resistance protrusion 7, as will be described later. Further, the rotational torque when the engaging protrusion 13 of the cap 11 overcomes the resistance protrusion 7 is set to such a magnitude that it cannot be easily rotated by human power such as fingers, and can be rotated using special means such as mechanical force. It is set to a certain size. Note that the reference numeral 15 is a gasket attached to the ceiling surface of the cap 11 to close the opening of the mouth portion 2.

The container (container main body 1 and cap 11) constructed in this way is constructed by storing the contents in the container main body 1, and then screwing the cap 11 together to form the engaging protrusion 1.
3 is stored and sold in a state in which it is engaged between the rotation stopper projection 6 and the resistance projection 7 of the container body 1. When putting the cap 11 over the mouth part 2, each protrusion 5 to 7
is formed at the upper end of the opening 2, so when the cap 11 is rotated in the tightening direction, the packing 15 comes into contact with the upper end of the opening 2 to perform a sealing action. The engaging protrusion 13 first climbs over the locking protrusion 5,
Then, it comes into contact with the locking surface 8 of the resistance projection 7 and receives resistance. The rotational torque is set to such an extent that it cannot be easily rotated with fingers or the like, but is set to such an extent that it can be rotated using special means such as mechanical force, and the resistance protrusion is created by the elasticity of the engagement protrusion 13 itself or the elastic deformation of the cap 11. 7 is forcibly climbed over, and the rotation of the engagement protrusion 13 is stopped by the rotation stopper protrusion 6. It goes without saying that the rotational resistance (torque) of the rotation stopper projection 6 is greater than the rotational resistance (torque) of the locking surface 8 of the resistance projection 7.
By stopping the engagement protrusion 13 on the rotation stopper protrusion 6, the engagement protrusion 13 is located between the rotation stopper protrusion 6 and the resistance protrusion 7 when the container is stored. The position mark 10 of the mouth part 2 is visible through the peephole 14.

Note that assembling the container is a simple task of simply screwing the cap 11 onto the opening 2.
Since there is no need to provide a separate member (such as an inner plug) in addition to the cap 11 and the container body 1, there is no step of fitting the inner plug into the mouth, and the assembly process is simple. Since it can be mass-produced using appropriate synthetic resin or glass, costs can be reduced.

Next, when the user or the like rotates the cap 11 in the loosening direction, the engagement protrusion 13 engages with the resistance protrusion 7.
It climbs over the guide slope 9 and comes into contact with the locking protrusion 5 and receives resistance. This locking protrusion 5 has a resistance force that is sufficient to prevent the cap 11 from loosening, and when the cap 11 is rotated with a force stronger than this resistance force, the engaging protrusion 13 overcomes the locking protrusion 5, and after that, the cap 11 can be freely moved. can be loosened.

Further, when the cap 11 is placed over the mouth portion 2 again and rotated in the tightening direction, the engaging protrusion 13 rides over the locking protrusion 5 and comes into contact with the resistance protrusion 7 and is locked. As mentioned above, the engagement protrusion 13 cannot overcome the locking surface 8 with normal force, so when the cap 11 is loosened and the cap 11 is screwed onto the mouth part 2 again, the locking protrusion 5 and the resistance protrusion 7 The engagement protrusion 13 is located between the viewing window 1
4, it becomes impossible to confirm the position mark 10. That is, if the position mark 10 is not visible before the container is sold to the user, the cap 11
It is clear that it has been loosened once.

On the other hand, FIGS. 3 and 4 show a second embodiment of this invention, in which a locking projection 5', a rotation prevention projection 6', a resistance projection 7' and a cap 11 are shown. The engaging protrusion 13' is configured to come into contact with the mouth portion 2 in the axial direction (vertical direction). Other parts are the same as those in FIGS. 1 and 2, so the same reference numerals are given and explanations are omitted.

``Effect of the invention'' As explained above, this invention has the engaging protrusion of the cap engaged between the anti-rotation protrusion and the resistance protrusion of the container body, and once the cap is loosened, the engagement protrusion The protrusion cannot move beyond the resistance protrusion to the rotation stopper protrusion, the locking protrusion continuous with the resistance protrusion prevents the cap from loosening, and the engaging protrusion is provided between the rotation stopper protrusion and the resistance protrusion. Since the position of the cap can be confirmed through the peephole of the cap, it is possible to prevent the cap from loosening, and also to ensure that the position of the cap when in storage is different from the position of the cap when in use. This has the effect that it is possible to reliably determine whether or not the cap has been opened, even when the cap is tightened, thereby preventing unauthorized opening.

In addition, the opening of the container body is provided with a locking projection, a resistance projection, and a rotation prevention projection, which are essential components of the present invention, and the cap that is screwed onto the opening is provided with a locking projection that is engaged with each of these projections. Since the structure is provided with protrusions, the structure can be simplified with a small number of parts, and the number of assembly steps can be reduced, thereby reducing costs. In particular, the present invention eliminates the process of fitting the inner plug into the mouth by omitting the inner plug, which has a seal structure that cannot be reinstalled, and creates a seal structure that cannot be reinstalled with just the cap. To achieve this goal, the container body and cap are formed separately, and the container can be sealed (sealed) when stored by simply screwing the cap together.
This makes it possible to improve workability during assembly.

[Brief explanation of the drawing]

Figures 1 and 2 show a first embodiment of this invention; Figure 1 is a perspective view of the main part of the container body;
Figure 2 is a partially sectional side view of the cap;
Figures 1 and 4 are perspective and side views of the second embodiment of Figures 1 and 2. DESCRIPTION OF SYMBOLS 1... Container body, 2... Mouth, 4... Small diameter outer circumferential surface, 5, 5'... Locking protrusion, 6, 6'... Rotation preventing protrusion, 7, 7'... Resistance protrusion, 8... ... Locking surface, 9 ... Guide slope, 10 ... Position mark, 11
... Cap, 13 ... Engagement protrusion, 14 ... Peephole.

Claims (1)

[Scope of utility model registration request] A small-diameter outer circumferential surface having a slightly smaller diameter than the other outer circumference is formed at the upper end of the outer circumference of the mouth of the container body, and this small-diameter outer circumferential surface has a locking protrusion and a direction from which the male thread of the mouth is tightened. Anti-rotation protrusions are formed at positions separated from each other, and a resistance protrusion is formed between these two protrusions, and the resistance protrusion has a vertical plane extending radially outward of the mouth on the anti-loosening protrusion side. A locking surface of the cap is formed, and a guide slope is formed on the side of the rotation stopper. Furthermore, a position mark is formed on a part of the outer circumferential surface of the opening, and a position mark of the cap that is screwed into the opening is formed. Engagement protrusions are formed on the upper inner circumferential surface of the cap to make elastic contact with the locking protrusion, the resistance protrusion, and the rotation stopper protrusion depending on the rotational position of the cap. A viewing window is formed through which the position mark is viewed when the cap is engaged between the rotation stop protrusion and the resistance protrusion; teeth,
A method for preventing loosening and tampering of container caps, which is characterized by being set to a size that cannot be easily rotated by human power such as hands or fingers, but is large enough to be rotated using special means such as mechanical force. structure.