JPH05285428A - Container equipped with nozzle head lock mechanism - Google Patents

Abstract

PURPOSE:To provide an aerosol container equipped with a lock mechanism which prevents the contents from leaking even if abnormal pressure is applied to its nozzle head in a locked state. CONSTITUTION:A lock mechanism is formed by setting a mount part 11 on a nozzle head 3 and a joint part 10 on an assembly part 2. In a locked state, the mount part 11 is mounted on the joint part 10 to form a sufficient space between the surfaces facing the cylinder piece 5 of the nozzle head 3 and the injection nozzle 4 of a container's main body. In this way, even if abnormal deflections occur to the nozzle head 3 and the assembly part 2, the contents are prevented from leaking by the depression of the injection nozzle 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerosol type container having a nozzle head lock mechanism for preventing leakage of contents.

[0002]

2. Description of the Related Art So-called hair styling foam, shaving foam and the like are usually stored in an aerosol type container. This aerosol type container has a container body, a synthetic resin nozzle head, and a synthetic resin assembly for assembling the nozzle head to the container body,
In general, it is usually assembled with a cover made of a hard material so that the nozzle head is not directly pressed down when not in use, for example, when it is placed in a cardboard and stacked. is there.

When using this aerosol container, the cover is removed, and then the nozzle head assembled to the container body via the assembly is pressed, and the dispensing nozzle of the container body is pushed down by this nozzle head. The contents are poured out by utilizing the action of gas pressure in the container body.

For safety, when not in use, the nozzle head is rotationally displaced with respect to the container body, and a part of the nozzle head is locked to a part of the assembly body so that the nozzle head is locked so that it cannot be displaced downward. This prevents the nozzle head from pushing down the spouting nozzle even if the nozzle head is tampered with, and prevents the contents from leaking.

[0005]

However, in the above-mentioned prior art, the lock mechanism for locking the nozzle head against the assembling body so that the nozzle head cannot be displaced downward is provided with a molding dimensional error of the assembling body and the nozzle head. If there is some mechanical backlash due to, there is a problem that the illegal contents leakage prevention function exerted by the lock mechanism is extremely deteriorated.

Further, even if the lock mechanism has no mechanical backlash, when a relatively large pushing down force acts on the nozzle head in the locked state, it is a molding material for the assembly and the nozzle head. Due to the characteristic of the resin material that it is flexibly deformed with respect to an external force, there is a problem that the downward displacement of the nozzle head with respect to the container body occurs, and the contents leak out.

Furthermore, the cover is necessary for safely storing and transporting the container as a product until the container reaches the consumer, and the container reaches the consumer. After that, since it becomes an unnecessary material, there is a problem that a special handling process for the cover is required and an extra material required for the cover is required to form one container as a product.

Therefore, the present invention was devised to solve the above-mentioned problems in the prior art, so that a slight downward displacement of the nozzle head with respect to the container body in the locked state does not lead to leakage of the contents. Therefore, it is an object of the present invention to provide a container with a lock mechanism having a high content leakage prevention function without requiring a cover.

[0009]

Means for Solving the Problems The means of the present invention for solving the above technical problems has a container body which is an aerosol type container in which a pouring nozzle for forming an ejection port for the contents is projected at an upper end portion. , Having a synthetic resin assembly attached to the upper end of this container body immovably, attached to this assembly body so as to be able to move up and down and rotate at a fixed angle, when pouring out the contents of the container body, Having a nozzle head having a tubular piece that forms a discharge path communicating with the discharge nozzle while exerting a downward force on the discharge nozzle of the container body, providing an engaging portion on the assembly, and providing the nozzle head By providing a riding portion, the riding portion rides on the engaging portion of the assembling body as the nozzle head rotates in the locking direction with respect to the assembling body, and pushes down the nozzle head with respect to the container body. With increasing displacement distance greater than flexure length generated in the set with body and nozzle head by the action, it for the set with body, in which displaced downward as not to engage held in.

A plurality of leg pieces are hung from the peripheral end of the nozzle head, and a taper surface is formed at the lower end of the leg pieces to form a riding portion, which opposes the leg pieces of the assembly from below. It is preferable that a flat plate having an opening into which the lower end portion of the leg piece is fitted is provided at the position to form the engaging portion.

[0011]

In order to pour out the contents in the container body, after rotating the nozzle head with respect to the assembled body in the unlocking direction to release the engagement between the engaging portion and the riding portion, Press the nozzle head downward. By this pressing action, the nozzle head descends, and the tubular piece pushes down the pouring nozzle 4 of the container body. As a result, the content in the container body is poured from the pouring nozzle through the pouring path of the nozzle head.

When not in use, the nozzle head is rotated in the opposite direction, that is, the locking direction, with respect to the assembly. By this rotation operation, the riding portion of the nozzle head rides on the engaging portion of the assembling body, and both are engaged with respect to the downward displacement and are in a so-called locked state.

As described above, in the locked state in which the nozzle head cannot be displaced downwardly with respect to the container body, the riding portion of the nozzle head is laid on the engaging portion of the assembly fixedly assembled to the container body. Therefore, even if there is some molding dimension error in the riding portion of the nozzle head and the engaging portion of the assembled body, this molding dimension error is due to the riding operation itself of the riding portion with respect to the engaging portion. It will not affect the lock function.

Further, since the locked state of the nozzle head is achieved by the riding portion of the nozzle head riding on the engaging portion of the assembly, the nozzle head is changed from the unlocked state to the locked state to It will be displaced upward relative to the attached body and the container body.

By the upward displacement of the nozzle head with respect to the container body, the tubular piece of the nozzle head is upwardly displaced with respect to the pouring nozzle of the container body, and a gap is formed between the opposing surfaces of the two in the vertical direction. This gap is set to a value that is larger than the bending margin that occurs in the nozzle head and the assembly when the downward pressure is applied to the nozzle head in the locked state, so that the nozzle head is improperly pressed in the locked state. Pressure, for example, put the container in a die ball and stack it,
Even if the load of the upper cardboard acts as a pressing force on the nozzle head of the container housed in the lower cardboard, and the nozzle head and the assembled body are flexibly deformed,
The tubular piece of the nozzle head does not push down the pouring nozzle of the container body, and leakage of the contents due to improper pressing force does not occur.

When the riding portion of the nozzle head is formed by forming the tapered surface on the leg piece and the engaging portion of the assembled body is formed by the flat plate having the opening, in the use state of the lock release, Since the leg piece of the riding portion opposes the opening portion of the engaging portion from above, when the downward force is applied to the nozzle head, the leg piece fits into the opening portion, so the nozzle head is attached to the assembly. With respect to this, it is displaced downward, and thereby the dispensing nozzle is pushed down to dispense the contents.

In the unused state in which the nozzle head is locked so that it cannot be displaced downward, the leg pieces slip out of the opening and ride on the flat plate due to the guide action of the tapered surface. The nozzle head is displaced upward with respect to the assembled body and the container body, and is held so as not to be displaced downward.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The nozzle head 3 hangs a thin cylindrical tube piece 5 from the center of the lower surface of the top wall of the synthetic resin topped cylinder, and at the same time, at the lower edge of the cylinder wall 18 of the topped cylindrical body, at equal intervals. The two leg pieces 12 are hung vertically with a part of the cylindrical wall 18 extended downward, and the tapered surface 13 is provided at the lower end portion of the leg pieces 12.
To form the riding portion 11.

The inside of the tubular piece 5 is formed as a vertical path portion of the pouring path 6 having an outlet opening at the upper end of the outer peripheral surface of the tubular wall 18, and the expanded diameter is provided at the lower end of the inner peripheral surface of the tubular piece 5. A stepped portion is formed, and the stepped surface is used as the pressing surface 7, and the diameter of the enlarged portion is made substantially equal to the outer diameter of the pouring nozzle 4 protruding to the upper end of the container body 1. There is.

The assembling body 2 is formed into a cylindrical body made of synthetic resin which is immovably assembled by being fitted into the upper end portion of the container body 1. The inside of the cylindrical body is partitioned into upper and lower partitions. A flat plate 14 that constitutes the engaging portion 10 is provided on the. Into the flat plate 14, the spouting nozzle 4 projects from the lower part in the center, and the nozzle head 3 is attached.
An opening is formed in which the cylindrical piece 5 of the nozzle can be fitted from above, and at the peripheral end, four openings 15 constituting the engaging portion 10 are formed so as to face the leg pieces 12 of the nozzle head 3. They are formed at equal intervals along the direction.

That is, when the nozzle head 3 is unlocked, the lower end portion of the leg piece 12 of the riding portion 11 is engaged with the engaging portion 10.
Since the nozzle head 3 is fitted in the opening 15 and the nozzle head 3 is located at the lower limit, the pressing surface 7 of the tube piece 5 is in contact with the contact surface 8 that is the upper end surface of the pouring nozzle 4. When the pushing down force acts on the nozzle head 3 in this state, the contents pushed down by the pouring nozzle 4 are poured out while the pressing surface 7 is pressed against the contact surface 8 and is in a close contact state.

When the nozzle head 3 is rotated in the set direction from the unlocked state, the leg piece of the riding portion 11 is caused by the riding operation of the tapered surface 13 of the riding portion 11 with respect to the opening edge of the opening 15 of the engaging portion 10. 12 rides on the flat plate 14 of the engaging portion 10. As the riding portion 11 rides on the engaging portion 10, the nozzle head 3 is displaced upwards with respect to the assembled body 2, and between the pressing surface 7 of the tubular piece 5 and the contact surface 8 of the pouring nozzle 4. The gap 9 having a larger value than the bending margin generated in the nozzle head 3 and the assembly 2 is formed.

On the outer peripheral surface of the cylindrical wall 18 of the nozzle head 3,
A pair of locking pieces 16 (see FIG. 1 and FIG. 4) are provided so as to be positioned substantially symmetrically, and the locking pieces 16 are opposed to the upper end portion of the inner peripheral surface of the peripheral wall of the assembly body 2. The retaining piece 17 is formed on the retaining piece 16 in the form of a circumferential protrusion that is retained from above.

By locking the locking piece 16 to the retaining portion 17, the nozzle head 3 is attached to the assembly body 2 so as to be rotatable but cannot be removed. By providing an inclined surface portion on the engagement surface of the stopper portion 17 with respect to the engagement piece 16 in accordance with the position of the opening portion 15 of the engagement portion 10, the nozzle head 3 is operated by the guide action of the inclined surface portion. When the head 3 is rotated from the locked state to the unlocked state, the pressing surface 7 of the tubular piece 5
Can be automatically returned to the descending limit position in which it comes into contact with the contact surface 8 that is the upper end surface of the pouring nozzle 4.

At the peripheral portion of the upper surface of the central opening of the flat plate 14, a restriction cylinder 2 having a short cylindrical shape with a notch 21 partially formed.
0 (see FIG. 2) is erected, and the lower end of the flat plate 14 is fitted into the central opening of the flat plate 14.
At a location facing the notch 21 of the tubular piece 5 that is fitted inside, the protruding piece 1 has a protrusion height that circumferentially opposes the end edge of the regulation tube 20 formed by providing the notch 21.
9 is provided so as to project in the radial direction, and the restricting tube 20 of the projecting piece 19
The rotational displacement limit of the nozzle head 3 with respect to the assembled body 2 is set by the abutting against the edge of the assembly body 2.

That is, at the turning position where the leg piece 12 of the riding portion 11 is fitted into the opening 15 of the engaging portion 10, the protruding piece 19 is provided.
Comes into contact with one end surface of the regulation tube 20 and the nozzle head 3
Is set to the lock release position, and conversely, at the rotation position where the leg piece 12 of the riding portion 11 rides on the flat plate 14 of the engaging portion 10, the projecting piece 19 abuts the other end surface of the restricting cylinder 20. , The lock position of the nozzle head 3 is set.

Restricting cylinder 2 which is substantially opposite to the notch 21
In the outer peripheral surface portion of 0, a thin thin piece 22 (see FIGS. 1 and 2) in the form of a vertically thin flat plate extending in the radial direction is erected, and the leg piece 12 facing the thin piece 22 A vertical flat plate-like elastic contact piece 23 (see FIGS. 1 and 2) is provided upright on the side surface, with the extending end portion facing the extending end portion of the thin piece 22 from the circumferential direction.

The thin piece 22 and the elastic contact piece 23 have their extended ends abutted against each other while the nozzle head 3 is rotationally displaced between the locked position and the unlocked position, and the nozzle continues. The head 3 rotates to elastically deform each other and get over, and a light impact sound and a feeling of a snap are generated by the light impact of the elastic return operation with a strong momentum when the user overcomes the impact sound. By listening and feeling the impact, it is possible to know the locked state of the nozzle head 3 by the sound and the touch, and thus a preferable feeling of use can be obtained.

The engaging portion 10 and the riding portion 11
Is not limited to the configuration shown in the illustrated embodiment. For example, the protrusion-like locking piece 16 is used as the riding portion 11 and the retaining portion 17 is used as a groove structure with which the locking piece 16 is engaged. The engagement portion 10 can also be used.

[0030]

Since the present invention has the above-mentioned structure, it has the following effects. Since the locked state of the nozzle head with respect to the container body is achieved by riding the riding portion of the nozzle head onto the engaging portion of the assembly that is immovably assembled to the container body by using rotation, for example, the nozzle Even if there is a molding dimension error in the head and the assembly, this molding dimension error is absorbed by the riding motion of the riding portion with respect to the engaging portion, and in the locked state, the nozzle head descends with respect to the assembly body. There is no backlash, and the lock mechanism exerts a reliable and stable content leakage prevention function.

The locked state of the nozzle head with respect to the container body is obtained by the riding portion of the nozzle head riding on the engaging portion of the assembling body. Therefore, in the locked state, the nozzle head is With respect to the container body, it will be displaced upward by this riding amount, whereby a desired gap is formed between the facing surface of the tubular piece of the nozzle head and the pouring nozzle of the container body. Due to the formed gap, even if downward deformation of the synthetic resin nozzle head and the assembled body occurs, the tubular piece of the nozzle head is not pressed by the pouring nozzle of the container body, Therefore, it is possible to reliably prevent the contents from leaking in the locked state, and to exert a more reliable and safe locking function.

Even if the nozzle head and the assembly are flexed and deformed by the action of the strong and improper downward pressing force on the nozzle head, the cylinder side of the nozzle head is not pressed by the pouring nozzle of the container body. So you can get reliable and strong safety against this unauthorized depressing force,
This eliminates the need for a cover for obtaining safety against an unjustified pushing down force, and thus eliminates the handling process and cost required for the cover, thus effectively reducing the cost of the container.

Since switching of the nozzle head from the unlocked state to the locked state can be achieved by a simple pivoting operation of the nozzle head with respect to the container body, the switching operation is extremely simple and easy.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention and is a longitudinal sectional view of a main part.

FIG. 2 is a plan sectional view taken along the line AA in FIG.

3 is an overall side view of a nozzle head in the embodiment shown in FIG.

4 is an overall plan view of a nozzle head in the embodiment shown in FIG.

FIG. 5 is an overall front view of the assembly body in the embodiment shown in FIG.

6 is an overall plan view of the assembly in the embodiment shown in FIG.

[Explanation of symbols]

1; Container body 2; Assembly body 3; Nozzle head 4; Discharge nozzle 5; Tube piece 6; Discharge path 7; Pressing surface 8; Contact surface 9; Gap 10; Engagement portion 11; Riding portion 12; Leg piece 13; Tapered surface 14; Flat plate 15; Opening portion 16; Locking piece 17; Lock-out portion 18; Cylinder wall 19; Projecting piece 20; Control tube 21; Notch portion 22; Thin piece 23; Elastic contact piece

Claims (2)

[Claims] 1. A container body (1) which is an aerosol container having an ejection nozzle (4) projecting from an upper end thereof, and the container body (1).
An assembly body (2) made of synthetic resin that is fixedly attached to the upper end of
It is attached to the assembly body (2) so as to be able to move up and down and rotatable at a fixed angle, and when the contents of the container body (1) is dispensed, a downward force is applied to the dispensing nozzle (4) and A nozzle head (3) having a tubular piece (5) forming a pouring path (6) communicating with the pouring nozzle (4);
(2) is provided with an engaging portion (10), and the nozzle (3) is mounted on the engaging portion (10) along with the rotation of the nozzle head (3) in the locking direction with respect to the assembled body (2), so that the nozzle Head (3)
With respect to the container main body (1), the assembly body (2) and the nozzle head (3) are displaced upward by a distance larger than the bending margin generated by the action of the pushing down force, and the assembly body ( A container with a nozzle head locking mechanism, in which the riding portion (11) that engages with and holds the lower head in a displaceable manner with respect to (2) is provided in the nozzle head (3). 2. A riding portion in which a plurality of leg pieces (12) are vertically provided from a peripheral end portion of a nozzle head (3) and a taper surface (13) is formed at a lower end portion of the leg pieces (12). (11) Composes and assembles
(2) A flat plate having an opening (15) into which the lower end of the leg piece (12) is fitted, at a location facing the leg piece (12) from below.
The container with a nozzle head lock mechanism according to claim 1, wherein the engaging portion (10) is provided with (14).