JPH0127889Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) This invention relates to the structure of a spray can that sprays liquid in the form of mist.

(Prior Art) This type of spray can has various spray structures. Among these injection structures, one conventional example of a structure for guiding the filler in the spray can main body to the nozzle will be described with reference to FIG.

An upper cover 43 having a hole 42 formed therethrough in the center is caulked and fixed to the upper opening of the main body 41 via a rubber gasket 44. A cylindrical nozzle 45 is inserted into the hole 42, and a valve 46 is inserted into the lower part of the nozzle 45. Also, a through hole 45c is provided on the side of the nozzle 45.
is provided, and a gasket 48 is inserted into the outer periphery.

A shielding member 50 is fitted approximately in the center of the valve 46, and a spring 51 is interposed between the shielding member 50 and the lower surface of the nozzle 45.
A through hole 52 is formed in a part of the shielding member 50, and an annular cylindrical member 53 is formed below the shielding member 50 at a position that does not fit into the through hole 52. A ball 54 made of metal is inserted inside the cylindrical member 53 and is adapted to roll within the cylindrical member 53. Further, a slit 55 communicating with the outside of the valve 46 is formed in the side wall of the cylindrical member 53, and a hole 56 is formed in the lower surface.

Therefore, when the spray can is used while being held upside down, the ball 54 rolls toward the nozzle 45, thereby opening the hole 56 and discharging the filler through the slit 55 and hole 56 into the nozzle 4.
It is designed to spray from 5 onwards.

A hollow pipe 57 is provided at the lower end of the valve 46.
is attached, and its lower end is cut off at a position close to the inner bottom surface of the main body 41.

Therefore, when the spray can is held horizontally or diagonally, the ball 54 rolls downward and is positioned above the hole 56, thereby blocking the hole 56 and discharging the filler from the lower end of the valve 46. It is designed to be sprayed.

(Problem to be solved by the invention) However, in the structure of the spray can, the inner walls of the cylindrical member are formed to have the same inner diameter, so when the spray can is held right sideways, the ball is located in the middle part of the cylindrical member. There were times when the product stopped and I was unable to spray. The present invention attempts to solve such problems.

Structure of the Invention (Means for Solving the Problems) Therefore, in order to solve the above-mentioned problems, the present invention attaches a magnet to approximately the center of a cylindrical member formed inside the valve, and A configuration is adopted in which a ball whose surface has the same polarity as the inner pole of the magnet is inserted inside the cylindrical member.

(Function) When the ball inside the cylindrical member rolls and tries to stop at the middle part, the surface of the ball has the same polarity as the inner pole of the magnet attached to the middle part of the cylindrical member, so it will not interact with the magnet. The ball will repel each other, and the ball will not be able to stop at that position, but will try to roll in either direction. Therefore, the ball will not stop in the middle of the cylindrical member and will not be able to spray.

(Example) Hereinafter, an example in which this invention was embodied in a spray can filled with a water-repellent surface treatment agent for automobiles will be described.
This will be explained according to Figure 4.

The upper edge of the main body 1 forming the side wall of the can is bent back into a circle to form a locked ring 2. An upper lid 3 is disposed on the upper surface of the main body 1, and the peripheral edge of the upper lid 3 is bent downward and then caulked and fixed to the lower side of the locking ring 2. An adhesive sealant 4 made of urethane sealant is interposed between the locked ring 2 and the upper lid 3 in a substantially filled state. This adhesive sealant 4
Unlike conventional rubber gaskets, the locking ring 2 and the upper lid 3 are adhesively fixed instead of being press-fitted.

A cylindrical nozzle 6 made of synthetic resin is inserted into a through hole 5 provided in the center of the upper lid 3. The nozzle 6 consists of a small diameter hollow part 6a and a large diameter solid part 6b, and a through hole 6c communicating with the inside is provided in the side wall of the small diameter hollow part 6a. A rubber gasket 8 is inserted into the outer periphery of the through hole 6c to prevent gas from escaping to the outside of the main body 1 from the through hole 6c when not in use.

A valve 7 is inserted into the lower outer periphery of the nozzle 6 than the upper lid 3, and its tip is fixedly attached to a recess 3a formed in the upper lid 3. Same valve 7
A shielding member 11 is fitted in approximately the center of the
A spring 12 is interposed between the shielding member 11 and the lower surface of the nozzle 6. Therefore, when the pressure on the nozzle 6 by a finger or the like is released after use, the nozzle 6 returns to its original state due to the biasing force of the spring 12.

A through hole 13 is provided in a part of the shielding member 11 . An annular cylindrical member 14 is formed below the shielding member 11 at a position that does not overlap the through hole 13, and the lower surface of the shielding member 11 and the upper surface of the cylindrical member 14 are tightly contacted. A ball 15 made of metal is inserted inside the cylindrical member 14 and is adapted to roll within the cylindrical member 14. Further, a recess 14a is formed on the inner circumferential surface of the substantially central portion of the cylindrical member 14, into which a cylindrical permanent magnet 19 is fitted. In this embodiment, they are arranged so that the N pole is on the inside. Further, as shown in FIG. 2, the ball 15 has a plurality of recesses 15a formed on the surface side, and a cylindrical permanent magnet 20 is placed in the recess 15a with the same polarity as the permanent magnet 19, that is, in this embodiment. It is inserted so that the N pole is on the front side.

Therefore, the ball 15 rolls and the cylindrical member 14
When the ball 15 attempts to stop near the middle of the cylinder, the surface of the ball 15 has the same polarity as the inside pole of the magnet 19 attached to the cylindrical member 14, so the ball 1
The magnet 5 and the magnet 19 repel each other and cannot be stopped in that area.

A slit 17 communicating with the main body 1 is formed on the side surface of the cylindrical member 14, and a hole 18 is formed on the lower surface.
is formed. Therefore, when the ball 15 is placed on the lower surface of the cylindrical member 14, the hole 18
It is located above and shields the hole 18.

A hollow pipe 21 made of soft synthetic resin is attached to the lower part of the valve 7, and the lower part has a length that extends to a position close to the bottom cover 16 attached to the lower surface of the main body 1. is formed.
Further, a bendable bellows part 22 is integrally formed in the middle part of the pipe 21, and an annular weight 23 is fitted to the outer periphery of the lower end part. Therefore, when the spray can is placed right sideways, the weight 23 allows the tip of the pipe 21 to be pushed into the bellows portion 2 so as to be close to the lower side wall (indicates the ground side) of the main body 1.
It is bent from 2. In other words, since the tip of the pipe 21 is located below the valve 7, spraying is possible even if the liquid level of the filler is below the valve 7.

Further, as the filler, a liquid water-repellent surface treatment agent 25 (hereinafter simply referred to as surface treatment agent) mixed with fluorocarbon gas was used. In the figure, 26 indicates the fluorocarbon gas vaporized within the can.

Next, the operation of the spray can constructed as described above will be explained with reference to FIGS. 1, 3, and 4.

First, as shown in FIG. 1, when the spray can is held upright and the nozzle 6 is pressed, the through hole 6c is exposed downward from the gasket 8. Then, the fluorocarbon gas 26 inside the can tries to blow out from the through hole 6c. At this time, since the hole 18 is blocked by the ball 15, even if the gas 26 enters from the slit 17, it cannot go through the hole 18 to the through hole 6c. Therefore, the surface treatment agent 25 is applied by internal pressure from the lower open end of the pipe 21 to the inside of the valve 7, the through hole 13, and the through hole 6c.
and is ejected out of the can through the nozzle 6.

Further, as shown in FIG. 3, when the nozzle 6 is pressed with the spray can right sideways, the through hole 6c is similarly exposed downward from the gasket 8. At this time, even if the internal ball 15 rolls and tries to stop at the middle part of the cylindrical member 14, the surface of the ball 15 has the same polarity as the inner surface of the magnet 19, so they repel each other. Therefore, the ball 15 does not stop at the intermediate portion but rolls toward the hole 18 and enters the hole 18.
to shield. Therefore, the surface treatment agent 25 flows from the lower open end of the pipe 21 toward the through hole 6c, and is ejected out of the can through the nozzle 6. Furthermore, even when the remaining amount of the surface treatment agent 25 is small, the pipe 21 is bent from the bellows part 22 toward the lower side wall of the main body 1 by the weight 23 fitted to the tip thereof, so that the lower opening of the pipe 21 is bent. Since the end is placed in the surface treatment agent 25 liquid,
Can be sprayed. Note that the same effect can be achieved when the spray can is tilted.

As shown in FIG. 4, when the spray can is turned upside down and the nozzle 6 is pressed, the gasket 8 comes out through the hole 6.
c is exposed downward. At this time, the ball inside the cylindrical member 14 rolls toward the upper lid 3 side due to its own weight and releases the hole 18. Therefore, the surface treatment agent 25 passes through the slit 17 and the hole 18, flows toward the through hole 6c, and is ejected from the nozzle 6 to the outside of the can.

Therefore, according to this embodiment, the surface treatment agent 25 can be sprayed even when the spray can is turned right sideways or upside down, so the surface treatment agent 25 can be used until almost all of the surface treatment agent 25 is used up.

Further, a magnet 1 is attached to the inner wall of the intermediate portion of the cylinder member 14.
9 and the surface side of the ball 15 has the same polarity as the inside of the magnet 19, so that even if the balls 15 roll and try to stop at the middle part, they repel each other and stop at that part. can be prevented. Therefore, it is possible to prevent the problem that spraying cannot be performed because the ball 15 stops at the intermediate portion.

In addition, the pipe 21 is formed of a soft synthetic resin, and a bendable bellows part 2 is provided in the middle part of the pipe 21.
2, when the spray can is held horizontally or diagonally, even if there is only a small amount of surface treatment agent 25 remaining, the tip opening bends due to its own weight so that it is adjacent to the lower side wall of the main body 1, and the surface Processing agent 25
Since it is placed within the liquid level, the same surface treatment agent 25 can be sprayed.

Moreover, since the adhesive sealant 4 is used between the main body 1 and the top lid 3 instead of the conventional rubber gasket, the fixation is changed from pressure bonding to adhesive fixation, and the sealing performance is significantly improved.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and, for example, it is also possible to do as follows.

(1) In addition to the annular magnet of this embodiment, the magnet 19 attached to the cylindrical member 14 may include a plurality of small magnets embedded therein. Further, depending on the shape, size, magnetic force, etc. of the magnet, it may be embedded in the outer peripheral portion of the cylindrical member 14.

(2) The side wall of the cylindrical member 14 may have a shape other than this embodiment, such as a concave shape extending over the entire circumference of the inner wall on the hole 18 side, or a tapered shape such that the inner diameter increases toward the hole 18 side. It may also be formed.
In this way, the probability that the ball stops at the middle part of the cylindrical member 14 can be further reduced.

(3) The bellows portion 22 may be formed in the middle portion of the pipe 21 in the embodiment, or the entire pipe 21 may be shaped like a bellows, or a bellows portion may be provided at the top of the pipe 21. However, when partially forming a bellows portion, it is more effective to provide it above the pipe 21.

(4) As the adhesive sealant 4 between the top cover 3 and the main body 1, in addition to the urethane sealant of this embodiment, vinyl chloride, silicone sealant, acrylic sealant, butyl sealant, soft epoxy resin, etc. that are adhesive to metal may be used. You may use one.

(5) As the filler, in addition to the water-repellent surface treatment agent 25 of this embodiment, any spray agent such as an antifreeze agent, a lubricant such as mineral oil or vegetable oil, etc. can be used.

(6) If the bellows part 22 is made flexible so that it can be bent with a slight force, the pipe 2 can be easily bent even if the weight 23 is omitted.
1. It can be bent only by the weight of the lower part.

Effects of the invention As detailed above, with this invention, even if the spray can is held right sideways, the ball inside the cylindrical member does not stop at the middle part. This is a practically preferable idea because it can prevent the problem of not being able to spray.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is a partially enlarged sectional view of Fig. 1, and Fig. 3 is a sectional view of the spray can shown in Fig. 1 when it is placed sideways. , FIG. 4 is a cross-sectional view of the spray can shown in FIG. 1 when it is turned upside down, and FIG. 5 is a cross-sectional view showing the structure of a conventional spray can. Valve...7, Cylindrical member...14, Ball...1
5. Magnet...19.

Claims (1)

[Claims for Utility Model Registration] 1. A magnet 19 is attached to approximately the center of a cylindrical member 14 formed inside the valve 7, and a magnet 19 is attached inside the cylindrical member 14 with a polarity equal to the inner polarity of the magnet 19. A spray can characterized by inserting a ball 15 having a surface. 2. The spray can according to claim 1, wherein the magnet 19 is an annular permanent magnet. 3 The ball 15 has a recess 15 formed on its surface.
A spray can according to claim 1 of the utility model registration claim, characterized in that a plurality of cylindrical permanent magnets 20 are embedded in the spray can.