JPH062764Y2 - Aerosol container nozzle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a nozzle for use in an aerosol container filled with a high-viscosity product such as paint or adhesive, or a foamed product.

Conventional technology Conventionally, in the case of nozzles of aerosol containers filled with high-viscosity substances such as paints and adhesives, foam products, etc., the liquefied gas contained in the contents remaining inside the nozzle vaporizes and expands when the injection is stopped. However, even after the injection was stopped, there was a large number of accidents in which dripping occurred, the residual contents contacted air, and the contents hardened in the nozzles over time, resulting in nozzle clogging.

One of those proposed for the purpose of preventing such an accident is a device described in Japanese Utility Model Publication No. 51-21367. This invention is intended to seal the nozzle after the completion of injection by covering the outer circumference of the content ejection pipe with a cover made of a soft elastic material, and prevent contact between residual content and air.

However, in the present invention, the outer circumference of the content ejection pipe is simply covered with a cover made of a soft elastic material, so that it is damaged or pinholes are generated by an external impact. There is a possibility that Further, if the internal pressure of the aerosol container is high, the covering body expands greatly and a large amount of contents are ejected. On the contrary, if the internal pressure of the aerosol container becomes low, the expansion of the coating becomes small and the ejection amount becomes small, or ejection becomes impossible. Therefore, there is a drawback that the ejection amount is significantly different between the initial use of the aerosol container and the subsequent use.

The present invention is intended to solve the above-mentioned problems, and in a nozzle of an aerosol container filled with a highly viscous material such as paint or adhesive or a foamed product, after-dripping may occur after injection is stopped. No nozzle clogging due to hardening of contents. At the same time, it does not break or pinholes due to external shocks, enabling safe use and maintaining a constant or constant spray volume regardless of the internal pressure of the aerosol container. It intends to enable stable use.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a soft elastic elastic tubular covering that can be deformed and expanded by the ejection pressure of the contents and can be restored by stopping the ejection. Is located so as to cover the ejection port closely to the outer peripheral surface of the content ejection pipe communicating with the stem and not to cover the tip end surface of the content ejection pipe. The outer cylinder made of hard material, whose lower end is fixed to the content ejection pipe, is fitted to the
A part of the inner surface of the outer cylinder body is contacted and fixed to the outer periphery of the covering body, and the expansion of the covering body is caused between a part of the other inner surface of the outer cylinder body and the outer surface of the covering body corresponding to the ejection port. Forming a gap,
The outlet of the content communicating with the expansion interval is formed in the outer cylinder body facing the front end surface of the content ejection pipe and the outflow interval of the content.

Action Since the present invention is constructed as described above, in order to use it, the stem is pressed to open the valve mechanism such as the tilt valve and push-down valve inside the aerosol container. By this opening, the contents inside the aerosol container are jetted by the jetting pressure of the propellant, and the soft elastic material covering the outer periphery of the jet outlet is deformed and expanded. Then, an outflow passage of the content is formed between the covering body and the content ejection pipe, and the content is caused to flow out from the outlet of the outer cylindrical body through the outflow passage.

Then, when the pressing force on the stem is released, the valve mechanism is closed and the ejection is stopped, the soft elastic covering body is restored by its own restoring force. And since the outer periphery of the ejection port is closely covered, the content remaining in the ejection port, stem or the like does not cause dripping even if it is a highly viscous material such as paint or adhesive or a foamed product. Further, the jetting port is not clogged due to the curing caused by the contact with air.

Further, since the outer periphery of the cover made of a soft elastic material is one in which an outer cylinder made of a hard material is fitted and fixed, the cover is protected by the outer cylinder and is damaged by an external impact, or It does not cause pinholes and enables safe use.

In addition, since the expansion interval of the covering is formed between the inner surface of the outer cylinder and the outer surface of the covering corresponding to the ejection port, the expansion of the covering when the contents are ejected is Limited to the range of expansion intervals. Therefore, if the cover is made to be relatively easy to expand, the diameter of the outflow path of the contents generated between the cover and the contents ejection pipe will be the same regardless of the weak ejection pressure or the strong ejection pressure. There is no variation in the ejection amount due to the diameter of the passage, and stable ejection of the contents is possible.

EXAMPLE An example of the present invention will be described below. (1) is a content ejection pipe, which is fitted and fixed to the stem (3) of the aerosol container (2) to allow a valve mechanism such as a tilt valve (Fig. It communicates with the inside of the aerosol container (2) via a not shown). Further, the content ejection pipe (1) has a content ejection port (5) opened on the side surface of the communication passage (4) directed in the central axial direction.

At least the spout (5) is provided on the outer circumference of the content ejection pipe (1).
A cylindrical covering body (6) made of a soft elastic material is intimately covered so as to be covered. Further, the covering body (6) is a content ejection pipe (1).
The tip surface of is not covered. The soft elastic covering (6) is made of a material and a shape that can be easily deformed and expanded by the ejection pressure of the contents such as paint, adhesive and shaving cream, and can be restored by stopping the ejection pressure. Is arbitrarily selected and configured.

In addition, the lower end of the sheath (6) should have
An outer cylinder body (7) made of a hard material fixed to (1) is fitted. Then, a part of the inner surface of the outer cylinder body (7) is brought into contact with the outer circumference of the covering body (6), and the covering body (6) is fixed to the outer circumference of the content ejection pipe (1). In addition, the expansion interval (8) of the covering body (6) is formed in a part of the other inner surface of the outer cylindrical body (7), and the distance between the covering body (6) corresponding to the ejection port (5) and the outer surface. To do. Then, the outlet (10) of the content communicating with the expansion interval (8) is made to face through the tip end surface of the content ejecting pipe (1) and the outflow interval of the content, the outer cylinder body (7). It is formed at the tip of.

In order to eject the contents such as high-viscosity materials such as paints and adhesives, or foamed products in the above-mentioned structure,
The stem (3) is pushed and inclined to open the valve mechanism (not shown) by the tilt valve inside the aerosol container (2). Then, the contents inside the aerosol container (2) are jetted by the jetting pressure of the propellant, and the soft elastic covering (6) covering the outer periphery of the jet outlet (5) is expanded by the expansion interval (8 ) Deforms and expands in the range. Then, since the inner surface of the outer cylinder body (7) is pressed, the outflow passage (11) for the contents is provided between the covering body (6) and the contents ejection pipe (1).
And the outlet of the outer cylinder (7) through this outflow passage (11).
Flow out the contents from (10).

Then, the pressing force on the stem (3) is released, the valve mechanism is closed, and the ejection of the contents is stopped.
(6) restores by its own restoring force and closely covers the outer circumference of the jet outlet (5). Therefore, the contents that are high-viscosity substances such as paints and adhesives or foamed products such as shaving cream that remain in the spout (5) and the stem (3) may cause vaporization of the dissolved liquefied gas. Even if it expands, it does not hang down. Further, by tightly covering the outer periphery of the jet port (5), the contact between the residual content and the air is blocked, and the jet port (5) is not clogged by the curing due to the air contact.

Further, since the outer periphery of the cover (6) made of soft elastic material is fitted and fixed to the outer cylinder (7) made of hard material, the cover (6) is the outer cylinder (7) made of hard material. ) Protected. Therefore, it is possible to use it safely without being damaged or pinholes caused by an external impact.

Further, the expansion interval (8) of the covering body (6) is formed at the interval between the inner surface of the outer cylinder body (7) and the outer surface of the covering body (6) corresponding to the ejection port (5). Therefore, the expansion of the covering body (6) when the contents are ejected is limited to the range of the expansion interval (8). Therefore, if the cover (6) is made to be relatively easy to expand, even if the jet pressure is weak or strong, the cover (6)
Flow path (11) for the contents generated between the pipe and the contents ejection pipe (1)
Since the diameters of the outlets are the same, there is no variation in the ejection amount due to the diameter of the outflow passage (11), and stable ejection of the contents is possible.

Effect of the Invention Since the present invention is configured as described above, the paint,
In a nozzle of an aerosol container filled with a high-viscosity material such as an adhesive or a foamed product, the nozzle does not clog due to hardening of the contents.

In addition, it can be used safely without being damaged or pinholes caused by external impact.

Further, regardless of the internal pressure of the aerosol container, the ejection amount is always constant or close to a fixed amount, which enables stable use.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a cross-sectional view of a non-spouted state of the contents, and FIG. 2 is a cross-sectional view of the spouted contents. (1) …… Contents ejection pipe, (3) …… Stem (5) …… Spout port, (6) …… Coating body (7) …… Outer cylinder, (8) …… Expansion interval (10) .... Outlet

Claims (1)

[Scope of utility model registration request] 1. A tubular covering made of a soft elastic material, which can be deformed and expanded by the ejection pressure of the contents and can be restored by stopping the ejection.
The outlet is provided on the side surface in the axial direction and is in close contact with the outer peripheral surface of the content ejection pipe communicating with the stem so as to cover the ejection outlet and not to cover the tip end surface of the content ejection pipe. An outer cylindrical body made of a hard material, the lower end of which is fixed to the content ejection pipe, is fitted to the outer peripheral portion, and a part of the inner surface of the outer cylindrical body is fixed in contact with the outer periphery of the covering body while the outer cylindrical body is An expansion interval of the cover is formed between a part of the inner surface of the cover and the outer surface of the cover corresponding to the ejection port, and the outlet of the content communicating with this expansion interval is defined as the tip surface of the content ejection pipe. And a nozzle of an aerosol container, which is formed on an outer cylindrical body which is exposed through an outflow interval of the contents.