JPH0624368Y2 - Opening / closing device for mouth of container - Google Patents

Description

TECHNICAL FIELD The present invention relates to a device for opening and closing a mouth of a container, which is used for various containers such as bottles and cans.

2. Description of the Related Art The applicant of the present invention previously applied for and disclosed a cap of the same kind of container as shown in FIG. Since the present invention relates to an improvement of the above disclosed invention, first of all, the above disclosed invention will be described. In the figure, reference numeral 1 is a mouth of a container, and a mouth of a bottle is shown as an example. Reference numeral 2 denotes a casting cylinder attached to the mouth portion 1 in pressure contact with it, which is made of synthetic resin. 3 is a top plate, and a thin portion 4 is provided on the tip of the casting cylinder 2.
It is integrally provided via. Reference numeral 5 is a knob for tearing off the top plate 3 and has a diameter larger than that of the top plate 3. An outer lid 6 is screwed into the mouth portion 1, and a cylindrical closing portion 8 is provided inside the top portion 7. Reference numeral 9 is a protrusion provided on the mouth 1. In addition, 10 is a shoulder portion, 11 is a thread,
Reference numeral 12 is a thread groove, 13 is an engaging portion, 14 is a locking portion, and 15 is a holding portion.

The user removes the outer lid 6, picks up the knob 5 and pulls it upward to tear off the thin portion 4, remove the top plate 3, and pour out the liquid or the like from the pouring tube 2 for use. Then, when closing the lid, the outer lid 6 is screwed into the mouth portion 1 and is screwed downward from the state shown in the drawing, so that the closing portion 8 is press-fitted into the tip portion 16 of the pouring tube 2 and the top wall. The inner surface of 7 is in pressure contact with the tip portion 16 so that it is hermetically sealed. The cap tears the thin portion 4 having a smaller diameter than the knob 5 by gripping the knob 5 and pulling it, so that the cap can be opened with a small force.

Problems to be Solved by the Invention However, it has been found that the above disclosed cap has the following problems. When the outer lid 6 is accidentally twisted more strongly in the closing direction at the regular position as shown in the figure,
The top plate 3 is pressed by the closing part 8 and therefore the pouring tube 2
The shoulder portion 10 of is deformed as shown by the imaginary line 17,
And if this deformation is continued for a long time, recovery will not be sufficiently performed,
Therefore, after removing the top plate 3, the closing part 8 is attached to the tip part 16 of the injection cylinder 2.
Even if an attempt is made to press-fit into, the tip end portion 16 cannot be sufficiently press-fitted because it is deformed down to the virtual line 18 of the tip end portion.
For this reason, the inner surface of the top wall 7 does not come into pressure contact with the tip portion 16 and a sufficient sealing cannot be achieved.

The present invention has been made to solve such a problem, and the purpose thereof is to provide the cap disclosed above.
It is possible to prevent the outer lid 6 from being erroneously and strongly twisted in the closing direction at the regular position as shown in the drawing so that the outer lid 6 cannot be hermetically sealed during subsequent use. An object of the present invention is to provide a mouth opening / closing device.

Means for Solving the Problems Described about this device, which achieves the above-mentioned object, described this device, which is the mouth part 1 of a container.
Synthetic resin casting cylinder 2 attached to the above; Top plate 3 integrally provided at the tip of the casting cylinder 2 via a thin portion 4;
An outer lid 6 made of synthetic resin that is screwed onto the outer lid 6; a closing portion 8 formed inside the top of the outer lid 6 for closing the tip portion 16 of the casting tube 2; provided outside the mouth portion 1 of the container. A protrusion 9 provided on an outer surface slightly above the lower end 6a of the outer lid 6; an outer periphery of a lower end of the outer lid 6 below the protruding portion 20 via a thin portion 22 and an outer lid 6 And an opening / closing device for the mouth of the container, which comprises an annular spacer 21 which is provided so as to be displaced in the radial direction and further reach the protrusion 9.

As described in the above-mentioned conventional example in the device of the present invention, when the outer lid 6 is mistakenly twisted further in the closing direction from the normal position as shown in the drawing, the space between the lower portion of the outer lid 6 and the protrusion 9 of the mouth portion 1 Since the spacer 21 is interposed between the outer lid 6 and the outer lid 6, the screwing of the outer lid 6 is stopped, so that the user notices the error and the screwing is stopped.

Even if it is strongly screwed without noticing it, the thin portion 22 is torn and the protruding portion 20 hits the spacer 22, and the screwing is stopped. Therefore, the downward bending of the shoulder portion 10 of the casting cylinder 2 as shown in the conventional example of FIG. 7 is prevented. Therefore, it is possible to prevent the situation in which the distal end portion 16 of the injection pipe 2 is not closed by the closing portion 8 of the outer lid 6 as described in the conventional example. Next, when opening the mouth portion 1, first, the outer lid 6 whose screwing is stopped by the spacer 21 is grasped, the resistance of the spacer 21 is removed, and the screwing is further advanced. Then, the thin portion 22 provided between the lower end portion of the outer lid 6 and the spacer 21 is torn and the outer lid 6 is screwed. However, it is possible to immediately confirm that the protruding portion 20 provided on the outer surface slightly above the lower end of the outer lid 6 reaches the upper surface of the spacer 21 by the slight screwing, and the thin portion 22 is cut off. it can.

Further, by simply screwing the outer lid 6, it is possible to separate the spacer without any other troublesome means.

Embodiment The apparatus shown in FIGS. 1 and 2 shows an embodiment of the present invention, but since many of the partial structures are almost the same as those of the conventional example shown in FIG. It is indicated by the same reference numeral. For this reason, reference numerals 1 to 16 in FIGS. 1 and 2 are the same as those in the conventional example, and the description thereof is omitted. Next, in FIG. 1 and FIG. 2, 6 a is a lower end portion of the outer lid 6.

A projecting portion 20 is provided on the outer surface slightly above the lower end portion 6a.

Reference numeral 21 denotes a spacer, which is formed in a large diameter so as to protrude outward from the outer lid 6. 22 shows a thin part. As described above, when the outer lid 6 is screwed into the mouth portion 1 of the container and screwed,
The thin portion 22 is cut, the spacer 21 contacts the protruding portion 20, and the screwing is stopped.

Thus, the problem described in the above-mentioned conventional example is solved.

Next, when opening the mouth portion, the thin portion 22 is cut off as described above, the outer lid 6 is removed, the spacer 21 is removed upward, the top plate 3 is torn off, and then the outer lid 6 is used. The tip portion 16 of the pouring tube 2 is closed by the closing portion 8. The lower end 24 of the closing portion 8 is so-called chamfered on the outer side, and is formed to have a smaller diameter toward the lower side. The outer diameter of the closing portion 8 is slightly larger than the inner diameter of the tip portion of the injection tube 2.
Then, the outer lid 6 is screwed into the mouth portion 1 to close the closing portion 8
The press-fitting into the pouring tube 2 can be performed with a small force. Further, as shown in FIG. 6, the sealing of the tip portion 16 of the pouring tube 2 can be effectively performed by contacting the tip portion 16 with the closing portion 8 and the corner portion of the inner surface of the top wall 7. A knob 5 is provided on the outer side of the top plate 3, and the knob 5 is the top plate 3.
Since it has a larger diameter, it can be easily removed when tearing the top plate 3.

Effect of the Invention This invention is configured as described above. Therefore, when the outer lid 6 is accidentally screwed, the spacer 21 is in contact with the protrusion 9 provided on the mouth portion 1 of the container and the screwing is not performed. Since the resistance is received, the error can be noticed and the screwing can be stopped. Still further, even if the screw is strongly advanced without noticing, the thin portion 22 is torn and the protrusion 20 hits the spacer 22 to stop the screw advancement. Therefore, the shoulder 10 is erroneously mistaken as in the conventional case shown in FIG. Recess it downwards,
It is possible to prevent it from being deformed. Mouth 1
In order to open normally, simply screw the outer lid 6 forward,
The thin portion 22 can be easily formed without any troublesome means.
Can be torn and the screwing can be stopped by the spacer 21, so that the above-mentioned torn can be recognized, and it is not necessary to confirm the torn again.

[Brief description of drawings]

1 and 2 show an embodiment of the present invention, in which FIG. 1 is a half sectional view of the opening / closing device of the opening of the container, FIG. 2 is a half sectional view of the device, and FIG. 3 is the same. FIG. 4 is a plan view of the portion shown in FIG. 3, FIG. 5 is a side sectional view of the portion, and FIG. 6 is a sectional view of the portion when the device is used. FIG. 8 is a half sectional view of a similar device previously disclosed and disclosed by the applicant of this invention, and FIG. 8 is a half sectional view of a similar device previously disclosed and disclosed by the applicant of this invention. 1 ...... container mouth 2 …… pouring cylinder 3 …… top plate 4 …… thin wall part 6 …… outer lid 6a …… lower end 7 …… top part 8 …… closing part 9 …… protrusion 16 …… tip part 20 …… Projection 21 …… Spacer 22 …… Thin section

Claims (1)

[Scope of utility model registration request] 1. A synthetic resin casting cylinder 2 attached to a mouth portion 1 of a container; a top plate 3 integrally provided on a tip portion of the casting cylinder 2 through a thin portion 4; Outer cover 6 made of synthetic resin to be screwed; Closed part 8 formed inside the top part of the outer cover 6 for closing the tip part 16 of the pouring tube 2; Provided outside the mouth part 1 of the container Projection 9; Projection 20 provided on the outer surface slightly above the lower end 6a of the outer lid 6; Outer periphery of the lower end of the outer lid 6 below the projecting portion 20 via a thin portion 22 and with the outer lid 6. An opening / closing device for the mouth of a container, characterized by comprising an annular spacer (21) provided so as to be displaced in the radial direction and further to reach the protrusion (9).