JPH0424841Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to a bottle cap used for bottles containing alcoholic beverages, etc.

[Prior Art] The inventor of this invention previously devised, filed and disclosed a bottle cap as shown in FIG. (Jitsugan 58-
No. 144111). Since this invention relates to an improvement of the above-mentioned disclosed invention, the above-mentioned disclosed invention will be explained first.

In order to explain this disclosed invention,
It is necessary to go back and explain the bottle cap, which was the object of improvement of this disclosed invention. The bottle lid that was the target of the improvement was a bottle stopper as shown in Figure 7. In the figure, a denotes the main body of the bottle stopper, the bottom of which is provided with metal foil b, and the upper flange c provided with a tin cover d.

The problem with this bottle stopper is that when you put your finger under the flange c and push it up to open it, your finger may be injured by the end e of the cover d. The disclosed bottle cap shown in FIG. 6 was made to improve this, and instead of the tin cover d, a synthetic resin cover f was engaged with the lid g. This made it possible to prevent the aforementioned injuries. In addition h
is a seal portion that can be torn off from the tear-off portion i.

[Problems to be solved by the invention] However, the disclosed bottle cap shown in FIG. 6 still has some drawbacks. The problem is that when the bottle cap is twisted up to open it, only the cover f turns, making it impossible to twist the entire bottle cap. Also, the cover f may come off. Another problem is that metal foil b is attached to the bottom. This is the same metal foil b.
Friction with the bottle spout (not shown) prevents the bottle cap from lifting up after being capped. However, this metal foil b requires material costs and processing costs, increasing the cost of this bottle cap. This idea was created to solve these problems, and its purpose is to
A synthetic resin cover is provided that will not cause the cover to spin idly or come off if the cover is twisted up when opening a bottle lid using a synthetic resin cover. Another object of the present invention is to provide a bottle cap in which the metal foil b can be omitted and the phenomenon of floating after capping can be prevented.

[Means for Solving the Problems] This invention which achieves the above-mentioned object is described as follows: The bottle mouth 3 has a ring-shaped recess 2 for engagement on the outer periphery 1, and the bottle mouth 3 is made of synthetic resin and is in contact with the outer periphery 1. a lid body 5 having a cylindrical wall 4; and a convex engaging portion 6 provided on the inner surface of the cylindrical wall 4 that engages with the recess 2.
and an annular and concave locking portion 7 formed on the outer surface.
and an annular connecting part 8 inside the upper part of the cylinder wall 4.
The plug body 9 and the cylindrical wall 4 are integrally provided through the
an upper end portion 10 formed at an upper end portion of the outer periphery of the cylindrical wall 4 and having a slightly larger diameter than the outer periphery of the cylindrical wall 4; a cover 12 having an outer cylinder wall 11 made of a synthetic resin having a harder hardness than the synthetic resin forming the cover; The protrusion 13 that locks on the locking portion 7 and the outer cylinder wall 1 of the cover 12
1, an upper inner surface 14 formed above the protrusion 13 and having a slightly smaller diameter than the upper end 10 of the lid 5; and an upper inner surface formed below the protrusion 13. This bottle lid is characterized by comprising a lower inner surface 15 having a diameter larger than 14 and approximately the same diameter as the outer diameter of the cylindrical wall 4 of the lid body 5 at most.

[Function] When trying to open the bottle cap attached to the bottle mouth 3 by twisting it and applying upward force as is normally done, the cover 12 will cause the upper inner surface 14 of the outer cylinder wall 1 to Since it is tightly fitted into the upper end portion 10 of the lid body 5 having a larger diameter than that, that is, it is attached under prestress,
Only the cover 12 will not rotate idly, and will not come off from the lid body 5. Further, the engaging portion 6 of the lid body 5 is provided with the cover 1 on the outside thereof.
Since the lower inner surface 15 of No. 1 is mounted in contact with the lower inner surface 15, the engaging portion 6 does not easily deform outward in the radial direction, so the metal foil for preventing lifting like the disclosed bottle cap is omitted. can do.

Further, the cover 12 has a lower part of the protrusion 13,
By providing the lower inner surface 15, the upper end portion 10 of the lid body 5 can be press-fitted into the upper inner surface 14 by using this lower inner surface 15 and fitting a jig into the same inner surface 15 as described later, This allows for a tight fit.

[Example] In FIG. 4, numeral 3 indicates the mouth of a bottle, and an annular recess 2 is formed on the outer periphery 1 of the mouth 3 of the bottle.

Reference numeral 5 denotes a lid made of synthetic resin, and the cylindrical wall 4 of the lid is attached to the outer periphery 1. Reference numeral 6 denotes a protruding engagement portion provided on the inner surface of the cylindrical wall 4, which is engaged with the concave portion 2. 7 is a locking portion. A plug body 9 is integrally provided inside the upper part of the cylindrical wall 4 via a connecting portion 8. 10 is the cylinder wall 4
The upper end portion is formed at the upper end portion of the outer periphery, and has a slightly larger diameter than the outer periphery.

Next, reference numeral 12 denotes a cover made of a synthetic resin having a harder hardness than the synthetic resin forming the lid body 5, and is provided with an annular locking portion 7 midway in the height direction of the inner surface of the outer cylinder wall 11. A locking protrusion 13 is formed, an upper inner surface 14 having a slightly smaller diameter than the upper end portion 10 of the lid body 5 is formed at the upper part of the protrusion 13, and an upper inner surface 14 is formed at the lower part of the protrusion 13. , a diameter larger than the upper inner surface 14, and at most the cylindrical wall 4.
A lower inner surface 15 is formed having a diameter substantially the same as the outer diameter of. The cover 12 is tightly fitted onto the lid 5 as shown in FIG. 4. In this case, the protrusion 13 is locked to the locking portion 7.

Note that 17 in the figure indicates a sealing portion. Also, in Fig. 3, 18 is a weakened line for tearing, 19 is a hole, and 20 is a weakened line for tearing.
21 is a notch, and 22 is a fissure.
The outer diameter of the upper end portion 10 is, for example, 32.5.
mm, the outer diameter of the locking part 7 is 30.5 mm, and the outer diameter of the cylinder wall 4 is
32.0 mm, whereas the cover 12
The inner diameter of the upper inner surface 14 is 31.0 mm, and the protrusion 13
The inner diameter of the lower inner surface 15 was 30.0 mm, and the inner diameter of the lower inner surface 15 was 32.0 mm.

The user holds the knob 20 and tears the weakened line 18 and fissure 22, removes the seal part 17 having the engaging part 6, and removes the lid body 5 having a part of the engaging part 6 from above the cover 12. Hold it, open the lid, and use it.

Next, a method for press-fitting the lid body 5 into the cover 12 will be described. This is done as shown in FIG. 5. In the figure, reference numeral 24 denotes a jig for accommodating the cover 12, and the cover 12 is thereby fitted into the support portion 26 at the tip of the fitting jig 25 while being expanded. The support portion 26 has a taper that becomes larger in diameter toward the proximal end portion 27, so that the inside of the cover 12 is widened. Refitting jig 2
The inside 28 of 5 is tapered so that the diameter becomes larger as it reaches the base end 27.

Next, 29 is a holding member, 30 is a pressing pin, and 31 is a sliding part. A lid 5 is attached to the tip 32 of the pin 30. Now, when the lid body 5 is press-fitted into the center of the fitting jig 25 in the state shown in the figure, the lid body 5 will be compressed in the center in the radial direction by the taper inside the jig 25, and will fit into the jig 2.
5, and finally the upper end portion 10 is press-fitted into the upper inner surface 14 of the cover 12. Next, in this state, the jig 24 is removed from the cover 12, the pin 30 is slid on the holding part 29, and when it is pushed out again, the cover 12 is separated from the support part 26 of the fitting jig 25 and expanded. outer cylinder part 1
1 is closed to accommodate the lid 5 inside.

[Effects of the invention] This invention is constructed as described above, and the lid body 5 has the following features:
Since the cover 12 does not engage with the cover 12 much, but is tightly fitted and is given prestress, and the cover 12 is made of a synthetic resin that is harder than the lid body 5, the bottle lid is attached to the outer periphery 1. When the cover 12 is attached to the bottle spout 3 having an annular recess 2 and twisted up from the outside to open it, the cover 12
can be prevented from rotating with respect to the lid body 5. Further, it is possible to prevent the cover 12 from coming off and leaving only the lid 5 on the bottle mouth 3.

Further, in this bottle lid, the upper end 10 of the outer periphery of the cylindrical wall 4 of the lid body 5 is formed to have a slightly larger diameter than the cylindrical wall 4, and the upper inner surface 14 of the cover 12 above the protrusion 13 is formed to have a diameter slightly larger than that of the cylindrical wall 4. , formed to have a slightly smaller diameter than the upper end portion 10,
In addition, the lower inner surface 15 of the lower part of the protrusion 13 has a diameter larger than that of the upper inner surface 14, and is at most as large as the cylindrical wall 4.
By forming the lower inner surface 1 to have approximately the same diameter as
5 as a mounting part of a jig, the lid body 5 can be press-fitted into the cover 12 by using another jig, and the lid body 5 can be tightly fitted.

Further, on the outside of the cylindrical wall 4 of the lid body 5 provided with the engaging portion 6, there is a cover 12 made of resin that is harder than the lid body.
, the engaging portion 6 is not easily deformed outward, and therefore, it is possible to eliminate the phenomenon of the bottle cap lifting up after the bottle cap is plugged into the bottle mouth 3. As a result, it is possible to omit the metal foil attached to the bottom of the stopper described in the conventional example, and the material cost and processing cost can be eliminated.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of this invention; Figure 1 is a half-sectional view of the cover of the bottle lid, Figure 2 is a sectional view of the lid body of the bottle lid, and Figure 3 is the same. Front view of the lid body,
Fig. 4 is a cross-sectional view of the bottle cap, Fig. 5 is a cross-sectional view showing the manufacturing process of the bottle cap, Fig. 6 is a half-sectional view of the bottle cap that the creator of this invention previously filed and disclosed, FIG. 7 is a half-sectional view of a conventionally used bottle cap. 1...outer circumference, 2...recess, 3...bottle mouth, 4...
Cylinder wall, 5... Lid body, 6... Engaging portion, 7... Locking portion, 8... Connection portion, 9... Plug body, 10... Upper end portion, 11... Outer cylinder wall, 12... ...Cover, 13...
Projection, 14... Upper inner surface, 15... Lower inner surface.

Claims (1)

[Scope of utility model registration request] Bottle mouth 3 having an annular recess 2 for engagement on the outer periphery 1
A lid body 5 having a synthetic resin cylindrical wall 4 in contact with the outer periphery 1, a convex engaging portion 6 provided on the inner surface of the cylindrical wall 4 that engages with the recess 2, and an outer surface thereof. a ring-shaped and concave locking part 7 formed therein; a stopper 9 integrally provided inside the upper part of the cylindrical wall 4 via an annular connecting part 8; and an upper end of the outer periphery of the cylindrical wall 4. an upper end portion 10 formed at the outer circumference of the cylindrical wall 4 and having a slightly larger diameter than the outer periphery of the cylindrical wall 4;
A cover 12 having an outer cylinder wall 11 formed of a synthetic resin having a harder hardness than the synthetic resin forming the cover 12.
, a protrusion 13 formed in an annular shape midway in the height direction on the inner surface of the outer cylinder wall 11 and locking to the locking part 7; and a protrusion 13 on the inner surface of the outer cylinder wall 11 of the cover 12. , an upper inner surface 14 formed above the protrusion 13 and having a slightly smaller diameter than the upper end 10 of the lid body 5; and an upper inner surface 14 formed below the protrusion 13 and having a diameter larger than the upper inner surface 14. and a lower inner surface 15 formed to have approximately the same diameter as the outer diameter of the cylindrical wall 4 of the lid body 5 at most.