JPH0447090Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Field of Industrial Application" The present invention relates to the sealing function of a screw cap.

``Prior Art'' There are various screw cap sealing functions available on the market. Among these, a typical one is to attach a virgin seal from above the attached cap, and cut a part of the seal in the form of circumferential perforations or discontinuous long holes.
In this method, the seal is separated from the cap by breaking the virgin seal at the cut by returning the cap or by pulling the cap.

``Problems to be solved by this invention'' Very thin aluminum or synthetic resin materials are used for the virgin seal, but in either case, a large-scale mounting machine is required, and in the case of aluminum, it is quite difficult to break. On the other hand, in the case of a synthetic resin material, it is easy to break, but if it falls on the surface, there is a risk of damaging the fingertips on the broken surface.

The object of the present invention is to provide a sealed cap that can be easily assembled and worn by hand, has a reliable sealing function, is easy to unseal, and is free from the risk of damaging the fingertips.

"Means for Solving the Problems" The sealing cap of the present invention has an engaging element 5 erected via a leaf spring 4 inclined upward from the upper surface of the top wall 3,
In addition, an engagement groove 7 with an appropriate angle range is cut out on one side of the upper part of the peripheral wall 6, and an engagement protrusion 8 is provided protrudingly on the outer surface of the lower part, so that the inner cap body 1 is screwed onto the outer surface of the container mouth neck 9.
A window 11 with which the engaging member 5 engages is formed in a part of the top wall 10, and a sawtooth-shaped locking piece 1 is provided on the rear surface of the rotation rear side when the window 11 is loosened, and is inclined low in the loosening direction.
2 is vertically provided, and the engagement groove 7 is provided on one side of the inner surface of the peripheral wall 13.
The outer cap body is rotatably fitted to the outer surface of the inner cap body 1 by providing a stopper 14 located at the outer surface of the inner cap body 1 and having an engagement groove 15 recessed in the lower part of the inner surface to engage with the engagement protrusion 8. It consists of 2.

"Operation" In the above, the inner cap body 1 is connected to the container opening neck 9.
In the state shown in FIG. 1, in which the engaging member 5 is screwed into the outer cap body 2 in accordance with the specifications, the engaging element 5 is engaged with the window 11 of the outer cap body 2, as shown in the same figure and FIG. 14 is the engagement groove 7 of the inner cap body 1
It is located at one end of (A in Figure 2). That is, before use, the window 11 has the engaging element 5, and this state is a sealed state.

Here, in order to take out the opened contents, it is sufficient to grasp the outer cap body 2 and rotate it in the loosening direction. In this case, since the outer cap body 2 is rotatable relative to the inner cap body 1, only the outer cap body 2 rotates at the beginning of the operation, and this rotation causes the locking piece 12 passing through the window 11 to move the engager 5 downward. Push it in and get over it as shown in Figure 3b. That is, the engaging element 5 disappears from the window 11.
At this time, the stopper 14 comes into contact with the other end of the engagement groove 7. Therefore, after this, the outer cap body 2,
The inner cap body 1 is loosened and removed from the container neck 9.

The locking piece 12 has a serrated shape that is sloped low in the loosening direction, so it can be easily removed from the unsealed state shown in FIG. 3b to the state shown in FIGS.
It is impossible to restore the state to the state shown in Figure a, and a sealing function is obtained.

"Embodiment" The leaf spring 4 of the inner cap body 1 extends obliquely from the center of the upper surface of the top wall 3 toward the periphery, and has an engaging element 5 near its free end, and the free end 5a is made thin. , the locking piece 12 is made to ride over the free end 5a. This is because the engaging element 5 may be used to overcome this, but in that case, the engaging element 5 is thick, so the outer cap body 2 must be made taller. still,
The protruding length of the engaging protrusion 8 is set to be large enough to make it difficult to detach and separate the fitted outer cap body 1.

The closing side edge 11a of the window 11 of the outer cap body 2 is inclined downward to the closing side to facilitate the engagement element 5 to come out of the window 11. Also, the locking piece 12
Since it has a serrated shape that slopes low in the loosening direction, it is impossible to return to the unsealed state after it is opened as shown in FIG. 3b, and the sealing function is reliable.
The outer cap body 2 is fitted and incorporated into the outer surface of the inner cap body 1 by manual pushing, but the engagement groove 1
5 is deeply engaged with the engagement protrusion 8, and cannot be removed after being engaged.

Each of the above parts is molded and manufactured from synthetic resin material.

"Effects of the Invention" As described above, in the present invention, the sealing function is achieved by the inner cap 1 and the outer cap 2 fitted onto the inner cap 1, but the outer cap 2 only needs to be inserted by pushing it in by hand. The sealing function can be easily obtained without the need for any machinery, and the opening operation can be done simply by rotating the outer cap body 2 in the loosening direction, which is easy and without any trouble, not to mention damage to the fingertips. There is no concern at all. Furthermore, once it is opened, it is impossible to return it to the opened state again.
The sealing function is reliable.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an embodiment of the sealing cap of the present invention, FIG. 2 is an exploded perspective view of the same embodiment, and FIGS. 3a and 3b are partial cross-sections showing the operation of the same embodiment.
Figure a is an unsealed state, and figure b is an unsealed state. 1...Inner cap body, 2...Outer cap body, 5
...Engagement element, 11...Window, 12...Locking piece.

Claims (1)

[Scope of utility model registration request] The engaging element 5 is erected from the upper surface of the top wall 3 via a leaf spring 4 inclined upward, and an engaging groove 7 with an appropriate angle range is cut out on one side of the upper part of the peripheral wall 6, and an engaging protrusion is provided on the outer surface of the lower part. The inner cap body 1 has a protruding strip 8 and is screwed onto the outer surface of the container mouth neck 9, and a window 11 in which the engaging element 5 engages is formed in a part of the top wall 10.
A sawtooth-shaped locking piece 12 that slopes low in the loosening direction is vertically provided on the rear surface of the rotation rear side when loosening, and a stopper 14 located in the engagement groove 7 is provided on one side of the inner surface of the peripheral wall 13. and an outer cap body 2 which is rotatably fitted to the outer surface of the inner cap body 1 and has an engagement groove 15 that engages with the engagement protrusion 8.