JPH0427793Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a cap device that is assembled to the mouthpiece of a bottle, and has excellent sealing properties.
The liquid can be easily poured out and the amount of liquid poured out can be measured.

[Conventional technology]

The cap that is attached to the mouthpiece of the bottle is required to have an excellent airtight seal and be able to easily pour out liquid, but it must also be able to measure the amount of liquid poured out. For example, it is extremely convenient in terms of use.

A normal cap is a capped cylinder, so if you turn it upside down, you can store liquid, and since you can keep the amount stored constant, you can measure the amount of liquid poured out. It is possible.

However, since this type of cap is attached to the neck of the bottle, its volume is relatively small, and therefore not only is it of limited use, but it is also difficult to pour liquid from the bottle. After being measured and subjected to prescribed processing, the cap is again inverted and assembled into the mouthpiece, which has the disadvantage that the liquid remaining in the cap drips onto the outer surface of the bottle.

In this regard, for example, the prior art measuring cap disclosed in Japanese Utility Model Publication No. 54-22525 has a configuration in which a measuring cylinder that loosely fits into the mouth of the bottle is suspended from the top plate of the cap. It can provide a relatively large volume to the body, and when it is reattached to the mouthpiece, the remaining liquid inside the cap will not drip onto the outside of the bottle, so it is somewhat effective. ing.

By the way, in order to reliably seal the spout with the cap alone without using a separate packing body, it is desirable to mold the cap from soft synthetic resin, but in the case of a screw cap, Since the cap is secured to the bottle using a threaded connection, the cap cannot be made of soft synthetic resin, and for this reason, the cap of the prior art described above cannot contain liquid. However, it was not always satisfactory in terms of strongly and reliably sealing the bottle.

[Problem that the invention attempts to solve]

Generally, large synthetic resin bottles have a body diameter that is extremely large compared to the diameter of the mouthpiece, and therefore, when molded by extrusion blow molding, the sealing ability at the mouthpiece part may be poor, especially In the above-mentioned prior art, since the mouth tube must be directly sealed with a cap having a screw cap structure, there is a problem in that it is difficult to firmly and reliably achieve an effective hermetic seal.

Furthermore, in the prior art, in order to facilitate the pouring of liquid from the bottle into the measuring cylinder, when a guide piece is provided to guide the liquid to be poured out, the cap assembled to the bottle is It protrudes greatly into strips,
There was a problem that it got in the way during transportation and storage.

Therefore, the present invention was devised to solve the problems in the above-mentioned conventional technology, and has a measuring function and regulates the form of the liquid dispensed from the bottle, making it easy to achieve injection into the measuring part. The technical challenge was to store almost the entire cap in the mouth of the bottle and achieve a hermetic seal using a force completely different from the screwing force, without the cap becoming an obstacle. The purpose is to achieve and maintain a strong and stable hermetic seal while enabling good handling of the bottle.

[Means to solve the problem]

The means of the present invention to solve the above problems is to have a bottle body having a locking circumferential strip around the outer circumferential surface of the upper end of the mouthpiece and a thread provided around the outer circumferential surface of the lower part of the locking circumferential strip. An outer cylinder having a locking strip around its inner circumferential surface that locks from below to the locking strip of the bottle is connected via an outer flange to the upper end of the cylinder wall that fits tightly into the mouth of the bottle. At the lower end of the cylindrical wall, there is provided an inner plug made of soft synthetic resin in which a tapered gutter-shaped guide piece is erected at intervals within the cylindrical wall so as to protrude from the upper end of the cylindrical wall. , On the outer periphery of the circumferential wall of the capped cylindrical body, which can be inserted into the cylindrical wall of the inner stopper with the guide piece of the inner stopper inserted, there is a thread on the inner circumferential surface that is screwed into the thread of the bottle. It has a metering cap in which an assembled cylinder is connected to the cap via the flange, a sealing strip that protrudes diagonally inward and upward is provided around the inner periphery of the upper surface of the outer flange of the inner plug, and On the outer peripheral surface of the peripheral wall directly below the flange,
The present invention is characterized in that a sealing portion with which the sealing strip of the inner plug body comes into close elastic contact is provided around the bulge in a thick wall.

[Effect]

The inner plug body is made of soft synthetic resin, and its cylindrical wall fits tightly into the mouthpiece of the bottle body, and the locking strip on the outer tube locks onto the locking circumferential strip of the mouthpiece from below, making it strong. As a result, the inner stopper is firmly attached to the bottle and is maintained tightly.

When the inner stopper body is assembled to the mouthpiece of the bottle body and the measuring cap is further assembled to the mouthpiece, the sealing strip of the inner stopper body deforms into tight elastic contact with the seal part of the measuring cap, so that A strong and reliable seal is achieved between the stopper and the metering cap.

Therefore, in order to firmly and stably screw the measuring cap onto the mouthpiece of the bottle without causing any additional deformation, even if the measuring cap is made of, for example, hard synthetic resin, Sealing of the bottle by the metering cap is achieved firmly and reliably.

The guide piece provided on the inner stopper has a tapered gutter shape and protrudes from the inside of the cylinder wall, and since this guide piece is inserted and assembled into the peripheral wall of the metering cap, it can be inserted into the inside of the bottle. The liquid is dispensed while its dispensing flow form is regulated by this guide piece, thereby making it extremely easy to inject the liquid from within the bottle into the peripheral wall of the metering cap. .

Therefore, it is possible to easily measure the dispensed liquid using this measuring cap, and when the measuring cap is assembled to the mouthpiece of the bottle, the peripheral wall portion where the liquid was measured is connected to the inner stopper. Since it is located within the cylindrical wall of the bottle, any remaining liquid adhering to the metering cap will reliably return to the bottle and will not contaminate the outer surface of the bottle.

The sealing strip is in the shape of a cylindrical piece that projects diagonally upward and has a reduced diameter upward, but the inner plug body is made of soft synthetic resin and is a tapered cylindrical strip that is easily elastically deformed. Even if the inner diameter of the upper end of this sealing strip is smaller than the inner diameter of the upper end of the cylindrical wall of the same inner plug body, the elastic deformation of this sealing strip in the direction of diameter expansion prevents it from being released from the molding die. can be achieved without any problems.

The elastic deformation that occurs when the seal strip is in close contact with the seal portion is an elastic deformation of the seal strip in the radial direction, so the elastic repulsive force from the elastically deformed seal strip acts in the radial direction. As a result, the sealing force exerted by the seal strip does not deteriorate the threading of the measuring cap onto the mouthpiece, and the threading of the measuring cap onto the mouthpiece remains stable and good over a long period of time. I will do it.

Since the guide piece is installed upright from the lower end of the cylinder wall that is tightly fitted into the spout, it exerts a sufficient regulating effect on the liquid to be poured out, even when the height of its protrusion above the spout is reduced. Therefore, even though the guide piece is molded to a length that can sufficiently regulate the liquid being poured out, the cap assembled to the spout is The device does not protrude significantly above the bottle, and as a result, the cap device does not interfere with handling such as transportation and storage of the bottle to which the cap device is attached.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

The mouthpiece 2 of the bottle 1 has a locking circumferential strip 3 around its upper end outer circumferential surface, and a thread 4 provided around its lower outer circumferential surface portion of the locking circumferential strip 3.

The inner plug body 5, which is tightly fitted and assembled into the mouthpiece 2 of the bottle body 1, is integrally molded as a whole from soft synthetic resin, and the upper end of the cylinder wall 6, which is tightly fitted into the mouthpiece 2. A short cylindrical outer cylinder 8 is connected to hang down through the outer flange 7, and is engaged with the inner circumferential locking strip 3 of the outer cylinder 8, so that the inner plug body 5 is attached under the mouth tube 2. A locking strip 9 is provided around the periphery to achieve the cut connection. Cylinder wall 6
A tapered gutter-shaped guide piece 12 is attached to the lower end of the
is in an upright position within the cylindrical wall 6, with its upper end protruding from the upper end of the cylindrical wall 6.

The measuring cap 14 has a cylindrical shape with a top and constitutes a measuring section, and has a circumferential wall 15 formed to have a diameter that allows it to be inserted into the cylindrical wall 6 between the cylindrical wall 6 and the guide piece 12. An assembly cylinder 17 is suspended from the outer periphery via a flange 16, and a thread 18 which is threadedly engaged with the thread 4 is provided around the inner peripheral surface of the assembly cylinder 17.

A seal strip 10 in the form of a tapered cylindrical piece whose diameter is reduced upward is provided on the inner circumferential edge of the upper surface of the outer flange 7 of the inner plug body 5, that is, on the upper edge of the inner circumferential surface of the cylindrical wall 6. With respect to the strip 10, a seal portion 19 whose outer diameter is set to be larger than the diameter of the upper end of the seal strip 10 is attached to the upper end of the outer peripheral surface of the peripheral wall 15 of the metering cap 14. It is formed in a form in which the diameter is increased outwardly, that is, in a form in which the diameter is enlarged.

Furthermore, the outer flange 7 is provided on the upper surface of the outer flange 7 of the inner plug body 5 that faces the lower surface of the flange 16 of the metering cap 14.
In order to achieve a seal between the outer flange 7 and the flange 16, a sealing piece 11 is provided around the periphery, and also on the lower surface of the outer flange 7 facing the upper end surface of the flange 2. 2
In order to achieve a seal with the upper end surface, a seal protrusion is provided around the periphery, and furthermore, at the upper end of the outer peripheral surface of the cylindrical wall 6 of the inner plug body 5, a seal ridge is provided on the inner peripheral surface of the spout 2. A sealing strip 13 that makes elastic contact is provided around the circumference.

At the inner circumferential end portion of the lower surface of the flange portion 16, that is, at the portion connected to the seal diagram 19, there is a relief portion 2 in the shape of a circumferential groove.
0 is provided around the circumference, and when the measuring cap 14 is assembled to the bottle body 1 in a sealed state, that is, when it is assembled to the screwing limit, the seal strip 1 projects upward.
0 can be smoothly elastically deformed without hitting the flange 16.

Note that the guide piece 12 has a tapered gutter shape formed by diagonally cutting a cylindrical body, and its upper end protrudes upward from inside the cylindrical wall 6, so that the entire guide piece 12 is stored. The peripheral wall 15 has a portion that is closed by the top wall 21, which is the upper end portion thereof.
It is shaped to protrude higher than the flange 16.

[Effect of idea]

Since the present invention has the above-described configuration, it has the following effects.

Since the inner stopper is made of soft synthetic resin, it is possible to achieve a reliable and strong seal between the inner stopper and the measuring cap, and between the spout and the inner stopper, resulting in a high sealing force. can provide a large cap.

Since the liquid can be easily poured from the bottle into the metering cap, metering of the liquid can be achieved smoothly and well.

The elastic deformation of the seal strip on the inner cap side that achieves a hermetic seal between the inner cap body and the metering cap is expansion deformation to achieve the seal, so the elastic repulsive force acting from the seal strip is Since it acts in the radial direction perpendicular to the direction along the central axis, which is the direction in which the cap is threaded onto the bottle, there is no risk of degrading the threading of the metering cap onto the bottle. A strong seal on the body can be safely maintained for a long period of time.

A guide piece with a length capable of exerting a sufficient regulating force against the liquid being dispensed is configured to stand up from the lower end of the cylinder wall that fits tightly into the spout. There is no need for the cap device to protrude significantly upwards from inside the cylinder, and the cap device does not protrude significantly upwards relative to the bottle, allowing the cap device to be handled such as transporting and storing the bottle without being an obstacle. , it can be made smooth and good.

Since the inner plug body is made of soft synthetic resin, there is no risk of improper deformation due to mold release, and the intended function can be performed accurately and reliably.

[Brief explanation of the drawing]

The drawing is an overall vertical sectional view showing an embodiment of the cap device according to the present invention in a closed state. Explanation of symbols, 1... Bottle body, 2... Mouthpiece, 3...
Peripheral locking strip, 4...Thread, 5...Inner plug body, 6...Cylinder wall, 7...Outer flange, 8...Outer cylinder, 9...Locking strip, 1
0...Seal strip, 11...Seal piece, 12...Guide piece, 13...Sealing strip, 14...Measuring cap, 15...Peripheral wall, 16...Flame portion, 17...Assembled tube, 18... ...Thread, 19...Seal part, 20...
...Escape part, 21...Top wall.

Claims (1)

[Scope of utility model registration request] A locking circumferential strip 3 is provided around the outer circumferential surface of the upper end of the spout 2, and a thread 4 is provided on the outer circumferential surface of the lower portion of the locking circumferential strip 3.
A bottle body 1 having a circumferential ring around it, and an outer cylinder 8 having a locking strip 9 around its inner circumferential surface that locks the locking strip 3 from below,
An outer flange 7 is attached to the upper end of the cylinder wall 6 that fits tightly into the mouth cylinder 2.
A soft synthetic material is provided with a tapered gutter-shaped guide piece 12 erected at the lower end of the cylindrical wall 6 at intervals within the cylindrical wall 6 and protruding from the upper end of the cylindrical wall 6. A thread 18 screwed into the thread 4 is provided on the outer periphery of the peripheral wall 15 of the capped cylinder which can be inserted into the cylinder wall 6 with the inner plug body 5 made of resin and the guide piece 12 fitted. Assembled cylinder 17 with
The measuring cap 14 is connected to the cap 14 via the flange 16.
and on the inner peripheral edge of the upper surface of the outer flange 7 of the inner plug body 5,
A sealing strip 10 projecting diagonally inward and upward is provided around the circumference, and a sealing portion 19 in which the sealing strip 10 comes into close elastic contact with the outer circumferential surface portion of the peripheral wall 15 directly below the flange 16 of the metering cap 14 is provided with a thick bulging circumference. A cap device consisting of