JPH062765Y2 - Aerosol container nozzle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a nozzle used for an aerosol container filled with a highly viscous material such as paint or adhesive or a foamed product.

Conventional technology Conventionally, in nozzles of aerosol containers filled with high-viscosity materials such as paints and adhesives, foam products, etc., when injection is stopped, the liquefied gas contained in the contents remaining inside the nozzles vaporizes and expands. 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 Laid-Open No. 47-16009.

In this invention, by covering the outer circumference of the content ejection pipe with a covering made of a soft elastic material, the nozzle after the completion of injection is sealed,
It is intended to prevent contact between residual contents and air.

In this invention, the portion covered with the covering is short, and the discharge path for the aerosol content is formed long up to the ejection port portion covered with the covering.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-described invention, the portion covered with the coating is short, and the discharge path for the aerosol content is formed long to the ejection port portion covered with the coating. for that reason,
A large amount of the aerosol content remains at the ejection port and the discharge path, and even if the aerosol content is covered with the coating, the residual aerosol content is hardened within a long period of time.

Further, in the above invention, since the outer circumference of the content ejection pipe is simply covered with the covering body made of the soft elastic material, there is a possibility that it may be damaged or a pinhole may be caused by an external impact. . 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 from the initial use of the aerosol container and thereafter.

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, the occurrence of dripping after the injection is stopped. Of course, it prevents clogging of the nozzle due to hardening of the contents for a long period of time.

In addition, it will not be damaged or pinhole due to external impact, allowing for safe use, and the ejection volume should always be constant or close to a fixed amount regardless of the internal pressure of the aerosol container. It is intended to enable stable use.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention forms a lead-out passage for the contents communicating with the stem inside the push button, and the lead-out passage is formed on the side surface of the push button. To project the needle, and the outer peripheral surface of the needle in the axial direction is closely covered with a cylindrical covering body, and this covering body is deformed and expanded by the ejection pressure of the contents and is between the outer peripheral surface of the needle. It is formed of a soft elastic material that forms an outflow path for the aerosol content and can be restored by stopping the ejection, and the base of this coating is connected to the outflow path through the introduction recess of the aerosol content and at the same time The outer circumference is covered with an outer cylindrical body made of a hard material through an expansion interval of the covering body.

Further, the needle may be formed in a conical shape having a tapered tip.

An introduction recess for introducing the aerosol content may be formed on the inner circumference of the base of the cover that is connected to the outlet path.

Operation Since the present invention is configured as described above, if the stem is pressed to open the valve mechanism such as the tilt valve and the push-down valve inside the aerosol container, the contents inside the aerosol container will not contain the propellant. The outlet pressure is jetted by the jetting pressure, the soft elastic material covering the outer periphery of the needle is deformed and expanded, and an outflow passage for the contents is formed between the covering and the needle, and this outflow The contents are discharged from the outlet of the outer cylindrical body through the 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 closely coats the outer circumference of the needle. for that reason,
Even if the contents remaining in the outlet path, stem, etc. are paints, adhesives, or other high-viscosity materials, or foamed products, do not cause dripping, and cause clogging due to curing due to contact with air. There is no.

Further, in the present invention, the outer periphery of the needle is covered with the covering body, and there is no need to form a jet port, a long-distance lead-out path, or the like. Therefore, the close contact of the outer circumference of the needle with the cover extends over a long distance, and the airtightness can be kept extremely high. Further, the residual amount of the aerosol content that has passed through the valve mechanism can be extremely reduced, and the curing of the residual substance can be prevented more reliably.

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, the expansion of the covering when the contents are ejected falls within the expansion interval range. Limited. 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 If one example of the present invention is explained below, (1) is a stem,
It is connected to the valve mechanism inside the aerosol container (2). The valve mechanism is opened to eject the aerosol content by pressing in the axial direction or in the side surface inclination direction, and the push button (3) is fixed to the upper end.

On this push button (3), a conical needle (4) having a tapered tip projects from the substantially central part of the diameter toward the outside of the side surface. Then, the outer peripheral surface of the needle (4) is covered with a tubular body.
Closely coated with (5). This coating body (5) is easily deformed and expanded by the ejection pressure of the contents such as paint, adhesive and shaving cream, and the outflow passage (13) for the aerosol contents between the outer peripheral surface of the needle (4). And a soft elastic material such as soft rubber that can be restored by stopping the ejection pressure.

In addition, the covering (5) has an annular collar (7) protruding from the outer periphery of the base (6), and the base (6) is connected to the stem (1) with a lead-out path (8).
And an introduction recess (10) for introducing aerosol contents is formed on the inner periphery of the base (6).

In addition, the outer circumference of the cover (5), the expansion interval of the cover (5)
The outer cylindrical body (12) is positioned so as to cover it via (11). Then, the base end (14) of the outer cylinder body (12) is abutted and fixed to the annular flange (7) of the covering body (5), and the covering body is used when the aerosol content is sprayed.
Prevents the removal of (5).

Further, by forming the needle (4) into a conical shape with a tapered tip, a long covering body for a long needle (4) can be obtained.
It becomes easy to attach the cover of (5).

In order to eject the contents such as high-viscosity materials such as paints and adhesives, or foamed products in the above-mentioned structure,
Push the stem (1) through the push button (3) to
(2) Open the valve mechanism such as the tilt valve and push-down valve inside. Then, the contents inside the aerosol container (2) are ejected to the discharge passage (8) by the ejection pressure of the propellant,
It penetrates through the introduction recess (10) between the outer periphery of the needle (4) and the cover (5) made of a soft elastic material. Then, the laminated body (5) is deformed and expanded to form an outflow passage (13) for the content between the covering body (5) and the needle (4).

Further, the introduction recess (10) is not always necessary, but by providing the introduction recess (10), the covering (5) and the needle
(4) It becomes easy to introduce the contents into the space.

Then, when the pressing force on the stem (1) is released, the valve mechanism is closed and the ejection is stopped, the covering body (5) made of a soft elastic material is restored by its own restoring force. And since the outer periphery of the needle (4) is closely covered, even if a small amount of content remains in the outlet passage (8), the stem (1), etc., even if it is a highly viscous material such as paint or adhesive, or a foamed product, etc. , Does not cause posterior drip. In addition, no clogging occurs due to curing due to contact with air.

In particular, since there is no need to form a jet port, a long-distance outflow path, etc. as in the conventional case, the coating density of the outer periphery of the needle (4) by the coating (5) should be kept extremely high over a long distance. Will be possible. In addition, the lead-out path (8) can be shortened, and the residual amount of the aerosol content that has passed through the valve mechanism can be extremely reduced, so that the curing of the residue can be prevented more reliably.

Further, since the outer periphery of the cover body (5) made of a soft elastic material is an outer cylinder body (12) made of a hard material fitted and fixed, the cover body (5) is an outer cylinder body made of a hard material ( 12) Protected by. for that reason,
The external impact does not damage the coating (5) or create pinholes, which enables safe use.

Further, the expansion interval (11) of the covering body (5) is formed at the interval between the inner surface of the outer cylinder body (12) and the outer surface of the covering body (5). Therefore, the expansion of the covering body (5) when the contents are ejected is limited to the range of the expansion interval (11). Therefore, if the coating (5) is made to be relatively easy to expand, the coating (5) and the needle can be used at both low and high ejection pressures.
The diameter of the outflow path (13) for the contents generated between (4) and (4) is the same. Therefore, there is no variation in the ejection amount due to the diameter of the outflow passage (13), and it is possible to stably eject and use the aerosol content.

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 highly viscous material such as an adhesive or a foamed product, the outer circumference of the needle is not covered with a coating, and there is no need to form a jet outlet or a long-distance outlet path. The covering density of the outer circumference of the needle by the body is formed over a long distance, and the airtightness can be kept extremely high.

In addition, the residual amount of aerosol content that has passed through the valve mechanism
By shortening the lead-out path, the number can be extremely reduced, and the hardening of the residue can be prevented more reliably.

Further, since the outer cylinder body made of a hard material is fitted and fixed to the outer periphery of the cover body made of the soft elastic material, the cover body is not damaged or the pinhole is not generated by an external impact, Allows for safe use. Further, regardless of the internal pressure of the aerosol container, it is possible to make the ejection amount constant or close to a constant amount, and to enable 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) …… Stem, (3) …… Pushbutton (4) …… Needle, (5) …… Coating (6) …… Base, (8) …… Leadway (10) …… Introduction recess, (11) …… Expansion interval (12) …… Outer cylinder

Claims (3)

[Scope of utility model registration request] 1. A lead-out passage for the contents communicating with the stem is formed inside a push button, and the lead-out passage is connected to the outer periphery of the proximal end on the side surface of the push button to project a needle, and the outer peripheral surface in the axial direction of the needle. Is intimately covered with a cylindrical covering body, and this covering body is deformed and expanded by the ejection pressure of the contents to form an outflow passage for the aerosol contents with the outer peripheral surface of the needle, and is restored by stopping the ejection. It is formed of a soft elastic material to be obtained, and the base of this coating is connected to the discharge path of the aerosol content and the outer periphery of the coating is covered with an outer cylinder made of a hard material through the expansion interval of the coating. A nozzle for an aerosol container, which is characterized in that 2. The nozzle for an aerosol container according to claim 1, wherein the needle is formed in a conical shape with a tapered tip. 3. The inner circumference of the base of the covering body connected to the lead-out path,
The nozzle of the aerosol container according to claim 1, wherein an introduction recess for introducing the aerosol content is formed.