JPS5910060Y2 - Structure related to screw cap - Google Patents

Description

[Detailed description of the invention] The present invention relates to a structure for a screw cap made of alloy or resin that has a certain degree of elasticity, and prevents the natural tightening of the screw cap from loosening and completes the sealing of the main body by the screw cap. The object is to provide convenience and fun in use by making a snapping sound at the same time.

Screw caps made of composite or resin material with a certain degree of elasticity are used in a wide range of fields, but although they have many excellent effects and advantages, they have some disadvantages. Natural loosening of tightening is a common problem.

In other words, screw caps generally keep the main body sealed by the tightening force generated by screwing them together, but due to vibrations during transportation, long-term storage, etc.
The tightening force created by this screw loosened, and the sealing of the main body sometimes deteriorated.

In addition, there is generally no guideline for determining how far the screw cap should be screwed into the main body to seal the main body, and for this reason, in many cases, the screw cap is The seal on the main body was too tight.

This invention was devised in order to eliminate the dissatisfaction with the screw cap in the conventional example described above, and as the screw cap is screwed onto the main body, the height position of the screw cap relative to the main body will be adjusted. Taking advantage of the fact that the screw cap changes at a constant rate depending on the degree of engagement, once the screw cap has screwed together to the point where it seals the body, further rotation of the screw cap is disabled, and just before this screwing limit is reached, the body is closed. This prevents the tightening from loosening by elastically deforming the portions that are hollowed out on the sides and shaping the portions that can be climbed over.

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

The structure of the screw cap of the present invention can be applied directly to the screw cap structure commonly used in the past.
The main body 9 is made of a suitable material and has a spout 11 with a thread 13 formed on its outer circumferential surface standing in the center of the shoulder 10, and the spout 11 of the main body 9 has a shape. It is applied to a combination with a screw cap that is screwed onto the spout 11 in order to open and close the spout 12.

In the case of the illustrated embodiment, the screw cap has an inner cylinder 3 whose inner circumferential surface has a thread 5 that engages with the thread 13 of the cap 11, which is suspended from the lower surface of the top part 4. In order to improve the appearance of the cap 1, an outer cylinder 2 is integrally formed to surround the inner cylinder 3.

A locking piece 14 having an appropriate height is protruded from a desired location of the eyebrow portion 10 of the main body 9 having the spout 11 erected thereon, directly facing the cap 1 to be screwed together.

On the other hand, with respect to the locking piece 14 of this main body 9, this locking piece 14
A bullet piece 7 and an abutment piece 6 are integrally formed at a predetermined location of the cap 1 facing directly above the cap 1 in a predetermined mutual positional relationship.

The bullet piece 7 has a tapered shape so that it can be relatively easily deformed elastically, and when the cap 1 is assembled to the spout 11 just before the screwing limit, that is, just before the spout 12 is sealed, the lower end The abutting piece 6 provided adjacent to the bullet piece 7 hangs down at a position and height that allows the bullet piece 7 to be locked to the upper end of the locking piece 14. The cap 1 is hung down at a position and height where its lower end abuts against the upper end of the locking piece 14 when the cap 1 reaches the position where the spout 12 is sealed.

In the illustrated embodiment, the bullet piece 7 and the abutment piece 6 are integrally formed on the inner circumferential surface of the outer cylinder 2, and the bullet piece 7 is integrally formed on the outer cylinder 2 via a mounting piece 8. ing.

Since the present invention has the above-described structure, when the cap 1 is screwed onto the main body 9 and reaches the position immediately before the spout 12 is closed as shown in FIG. As the screwing of the cap 1 to the main body 9 progresses, the lower end of the bullet piece 7 that descends toward the locking piece 14 is hooked on the upper end of the locking piece 14.

Regardless of whether the lower end of the bullet piece 7 is caught on the upper end of the locking piece 14, if the screwing of the cap 1 to the main body 9 is pushed forward, the bullet piece 7 will be elastically deformed and will ride over the locking piece 14. Simultaneously with the completion of the movement of the piece 7 to get over the locking piece 14, the spout 12 is completely sealed by the cap 1, and the lower end of the abutment piece 6 abuts against the upper end of the locking piece 14, thereby preventing the spout 12 from reaching the main body 9 of the cap 1 any further. At this time, the bullet piece 7 that has overcome the locking piece 14 makes a snapping sound as the bullet piece 7 returns elastically.

In this manner, the present invention prevents the cap 1 from further rotating relative to the main body 9 once the spout 12 is sealed, thereby preventing the cap 1 from being overtightened. Once the sealed state is reached, the bullet piece 7 must rotate in the opposite direction to get over the locking piece 14, which causes the cap 1 to rotate and displace with respect to the main body 9, which deteriorates the sealing of the main body 9. No such inconvenience will occur.

Note that in the closed position of the spout 12 where the bullet piece 7 climbs over the locking piece 14 and the locking piece 14 hits the abutment piece 6, the bullet piece 7 must ride over the locking piece 14, so the bullet piece 7 At the position where the bullet 7 crosses over the locking piece 14, a gap corresponding to the amount of elastic deformation of the bullet 7 is formed between the bullet 7 and the locking piece 14, and this gap allows the bullet 7 to It is difficult to say that the cap 1 is accurately held at the closed rotation limit position.

Of course, the rotation limit position where the locking piece 14 abuts against the abutment piece 6 can be set slightly more than the sealing rotation position of the spout 12 by utilizing the elasticity of the resin material that forms the cap 1. Although it is possible to set the cap 1 to a position where the movement has advanced, in this case, there is no problem with keeping the spout 12 sealed, but the cap 1 that is assembled to the main body 9 to the limit of rotation may cause no problem.
However, at the rotation limit position, an unpleasant wobbling occurs due to the action of a slight external force.

To solve the above-mentioned disadvantages, the lower part of the abutment piece 6 is designed so that the locking piece 14 can be perfectly positioned between the bullet piece 7 and the abutment piece 6 without wobbling when the cap 1 reaches its rotation limit. is separated from the inner peripheral surface of the outer cylinder 2 so that the lower part of the abutment piece 6 can be elastically deformed.

In this way, if the lower part of the abutment piece 6 is made elastically deformable, the locking piece 14 will abut against the abutment piece 6 before the bullet piece 7 gets over it, so that the locking piece 14 will continue to move against the abutment piece 6. When the cap 1 is pressed and elastically deformed and the rotation of the cap 1 is pushed forward, the bullet piece 7 overcomes the locking piece 14 and returns elastically with a snapping sound. When the operation of assembling the cap 1 is completed, the action of the rotating force on the cap 1 is released.

With the release of this rotational force, the abutting piece 6, which had been elastically deformed by being pressed by the locking piece 14, elastically returns to its original state while rotating the cap 1 in the opposite direction due to its internal stress.

This elastic return of the abutment piece 6 causes the cap 1 to move in the opposite direction (
Due to the slight rotation in the direction of unscrewing, the locking piece 14
comes into contact with the bullet piece 7, and as a result, the locking piece 1
4 is perfectly positioned between the abutment piece 8 and the bullet piece 7.

As is clear from the above description, the present invention makes it possible to limit the rotational assembly limit of the cap 1 to the main body 9 without waste, and prevents undue deterioration of the threaded engagement, that is, deterioration of the sealing of the main body 9. In addition, since the tightening limit of the cap 1 to the main body 9 can be known by the sound of a snap, it is possible to obtain an interesting usage condition without requiring excessive force, and furthermore, the structure is simple and easy to implement. It has beneficial effects.

[Brief explanation of the drawing]

FIG. 1 is a bottom view of a cap showing an embodiment of the present invention. FIG. 2 is a plan view of the main body relative to the cap shown in FIG. 1. Figures 3 and 4 are side views of main parts showing the positional relationships between the abutment piece, the bullet piece, and the locking piece. Figure 3 shows the state immediately before closing when the bullet piece hits the locking piece. FIG. 4 shows the sealed state in which the bullet has passed over the locking piece. Explanation of symbols 1: Cap, 2: Outer cylinder, 3: Inner cylinder, 4:
Top plate, 5: Thread, 6: Butting piece, 7: Bullet piece, 8: Mounting piece, 9: Main body, 10: Shoulder, 11: Spout, 12: Spout, 13: Thread, 14: Locking Piece.

Claims (1)

[Scope of utility model registration request] A locking piece 14 of a predetermined height is attached to the shoulder portion 10 of the main body 9, which has a spout 11 with a thread 13 formed on the outer circumferential surface erected at the center of the shoulder portion 10.
The cap 1 is screwed onto the spout 11 in order to open and close the spout 12 formed in the spout 11. A cap in which a bullet piece 7 is hung down and whose lower end is locked to the upper end of the locking piece 14 at a height position immediately before sealing the spout 12, and the bullet piece 7 climbs over the locking piece 14. 1, a structure relating to a certain screw cap in which an abutting piece 6 is provided protrudingly from the locking piece 14 at the closed position of the spout 12.