JP7373230B1 - rubber balloon - Google Patents

Abstract

[Problem] To prevent a person from holding a mouthpiece in their mouth and blowing into it to directly inflate it, thereby eliminating hygiene problems. In the rubber balloon 2 of the present invention, a spout 6 is attached to the open end of the balloon body 5. The spout 6 is provided with a tapered cylindrical portion 9 as a protruding portion extending in a direction opposite to the balloon body. The outer diameter D9 of the outward opening 9a in the tapered cylinder portion 9 is set to be larger than the outer diameter D6 of the mouth tube 6. [Selection diagram] Figure 2

Description

The present invention relates to rubber balloons .

BACKGROUND OF THE INVENTION When watching sports, especially baseball or soccer games, it is common practice for fans to release elongated rubber balloons filled with air into the air as a way to support their favorite teams. For example, when watching a professional baseball game, rubber balloons are released all at once before the seventh inning to encourage the players, and rubber balloons are released all at once after the game to celebrate a victory.

This type of rubber balloon is made by a person who holds the tube in their mouth, fills it with air to inflate it into a long and thin shape, then closes the tube with their fingers to prevent air from leaking, and then removes their fingers from the tube at the right time. The air inside the rubber balloon is blown out from the mouthpiece, and the blown air is used as a propulsion force to be blown into the air. The mouthpiece of a rubber balloon generally has a whistle function, and when air is ejected from the mouthpiece, a "beep" sound is generated.

Patent No. 5671513 Utility model registration No. 3196239 Utility model registration No. 3227352

By the way, as mentioned above, this type of rubber balloon is generally inflated into an elongated shape by a person holding the tube in their mouth and blowing into it.

However, it is not sanitary to inflate a rubber balloon by holding the mouthpiece in your mouth and blowing into it. For example, when a large number of rubber balloons are released all at once at a baseball stadium, the breath of people blown into the balloons is emitted downward, into the stadium, and spreads into the atmosphere, adhering to the skin and food of spectators. there's a possibility that.

Considering the recent global spread of the new coronavirus, the hygiene problems caused by the act of holding a rubber balloon in your mouth and blowing into it cannot be taken lightly. For example, the current situation is that the use of rubber balloons is prohibited when watching professional baseball games, so even if you are watching the game, you cannot use the goods that would make the game more exciting and enjoyable. In order to lift the ban on the use of rubber balloons, it is necessary to take some concrete measures to eliminate the sanitary problems mentioned above.

The present invention has been made in view of the above-mentioned current situation, and provides a rubber balloon that can prevent a person from directly inflating the balloon by holding the mouthpiece in their mouth and blowing into it, thereby eliminating the occurrence of hygiene problems. This is a technical issue.

The present invention relates to a rubber balloon in which a mouthpiece is attached to an open end of a balloon body, and the mouthpiece has a diameter larger than an outer diameter of the mouthpiece and a diameter opposite to that of the balloon body. A tapered cylindrical portion is provided, and an outer diameter of an outward opening in the tapered cylindrical portion is larger than an outer diameter of the mouth tube.

According to a second aspect of the present invention, in the rubber balloon according to the first aspect, at least one groove-shaped or hole-shaped gas relief recess is formed in the peripheral wall of the tapered cylindrical portion.

According to the present invention, it becomes difficult for a person to hold the mouthpiece in their mouth due to the large outer diameter of the protrusion and tapered tube provided on the mouthpiece, and it is difficult for a person to hold the mouthpiece in their mouth and breathe directly into the mouth. This effectively prevents the balloon body from being inflated, thereby eliminating sanitary problems caused by the act of blowing directly into the balloon body.

Further, if at least one groove-shaped or hole-shaped gas relief recess is formed in the peripheral wall of the tapered cylinder part , unless the mouthpiece is forcibly held together with the tapered cylinder part, the It is not possible to blow air directly into the balloon body (because the air leaks from the gas relief recess). Therefore, it is possible to more reliably prevent a person from inflating the balloon body by holding the mouthpiece in their mouth and blowing directly into the balloon body.

A launcher that grips and releases the mouthpiece attached to the open end of the balloon body of a rubber balloon, and includes a vertically cylindrical air supply nozzle and is placed on both sides of the air supply nozzle. A pair of gripping levers are provided on the proximal end side of the air supply nozzle, and a male or female engagement portion provided on the distal end side of the cylinder of an injection pump for injecting gas into the balloon body. By providing a female or male type engaging portion that can be engaged with the injection pump, the injection pump for injecting gas can be easily attached to the firing tool.

Therefore, even people who have difficulty inflating the balloon body by directly blowing into the balloon, such as children and women with small lung capacity, can use the injection pump via the ejector to You can easily inflate the balloon itself. There is no need to blow directly into the balloon body to inflate it. There is no concern that the air will escape while the rubber balloon is being held by the launcher.

Each of the gripping levers is formed with a lock claw that extends toward the air supply nozzle and is engageable with a shoulder portion of the spout, and a stopper piece that extends in a cantilever shape toward the air supply nozzle. Each of the stopper pieces is configured to support the bottom side of the mouthpiece when the mouthpiece is attached to the tip side of the air supply nozzle. When the mouthpiece is attached to the mouthpiece, the locking pawl and the stopper piece can stably hold the mouthpiece in a manner that cannot be removed.

By adopting a rubber balloon launch set consisting of the rubber balloon , the launch tool, and the injection pump, it is possible to prevent people from directly blowing into the balloon body to inflate it, thereby eliminating hygienic problems. It is to make it possible.

FIG. 2 is a front view showing a rubber balloon launch set including a rubber balloon, a launch tool, and an injection pump. It is a figure explaining 1st Embodiment of the spout in a rubber balloon, (a) is a front view, (b) is a front sectional view, and (c) is a bottom view. It is a perspective view of a launcher. It is explanatory drawing of a launcher, (a) is a front view, (b) is a top view, (c) is a bottom view, and (d) is a right view. FIG. 3 is a front sectional view showing a state in which the firing tool is attached to the mouthpiece of the first embodiment. It is a front sectional view showing another example of the taper tube part in a mouth tube. It is a bottom view which shows another example of the gas relief recess in a spout. It is a figure explaining 2nd Embodiment of a spout, (a) is a front view, (b) is a front sectional view, and (c) is a bottom view. It is a figure explaining 3rd Embodiment of a spout, (a) is a front view, (b) is a front sectional view, and (c) is a bottom view. It is a figure explaining 4th Embodiment of a spout, (a) is a front view, (b) is a front sectional view, and (c) is a bottom view. It is a figure explaining 5th Embodiment of a spout, (a) is a front view, (b) is a front sectional view, and (c) is a bottom view. It is a figure explaining 6th Embodiment of a spout, (a) is a front sectional view, (b) is a bottom view. It is a figure explaining 7th Embodiment of a spout, (a) is a front sectional view, (b) is a bottom view.

Next, embodiments of the present invention will be described in detail with reference to the drawings. In the following explanation, the direction in which the balloon body 5 is viewed from the mouthpiece 6 of the rubber balloon 2 is referred to as "up", and the opposite direction is referred to as "down", and in the case of the launcher 3, the side where the mouthpiece 6 is attached is referred to as "up". '', the side to which the injection pump 4 is attached is referred to as the ``lower'', the side to which the firing tool 3 is attached to the injection pump 4 is referred to as the ``upper'', and the side to which the handle 14 of the piston rod 13 is attached is referred to as the ``lower''. However, these terms are used for convenience of explanation and do not limit the technical scope of the present invention.

As shown in FIG. 1, a rubber balloon launcher set 1 of the present invention includes a rubber balloon 2, a launcher 3 that grips and releases the mouthpiece 6 of the rubber balloon 2, and inflates the rubber balloon 2. and an infusion pump 4.

The rubber balloon 2 includes a balloon body 5 made of a stretchable material such as natural rubber, and a spout 6 attached to a lower opening (open end) of the balloon body 5. When a gas such as air is injected into the balloon body 5, the balloon body 5 expands into an elongated, substantially cylindrical shape. However, the inflated shape of the balloon body 5 is not limited to the above-mentioned shape, and may be any shape. The substance injected into the balloon body 5 may be other than air. For example, other gases such as nitrogen may also be used. The periphery of the lower end opening of the balloon body 5 is a thick walled portion 5a.

1, FIGS. 2(a) to 2(c), and FIG. 5 show a first embodiment of a spout 6 attached to the lower end opening (open end) of the balloon body 5. As shown in detail in FIGS. 2(a) to 2(c), the mouthpiece 6 has an approximately cylindrical shape as a whole by fitting the upper cylinder body 7 and the lower cylinder body 8 together and connecting them integrally. It was formed. That is, the spout 6 of the first embodiment is a two-part type consisting of an upper cylinder body 7 and a lower cylinder body 8.

The upper cylindrical body 7 is formed into a cylindrical shape with a downward opening, and a circular upper communication hole 7c is formed in the top plate portion 7a. The lower cylindrical body 8 is formed into a cylindrical shape with an upward opening, and a circular lower communication hole 8b is formed in the bottom plate portion 8a. The communication holes 7c, 8c of both the cylindrical bodies 7, 8 are set in a positional relationship in which they face each other in a state where both the cylindrical bodies 7, 8 are fitted into each other.

An upper annular flange 7d that protrudes radially outward is formed on the upper side of the peripheral wall portion 7b of the upper cylinder 7. On the lower side of the circumferential wall portion 7b of the upper cylinder 7, a locking protrusion 7e whose protrusion height is lower than that of the upper annular flange 7d is formed to protrude outward in the radial direction. A lower annular flange 8d is formed on the upper side of the peripheral wall portion 8b of the lower cylinder 8 and projects radially outward. A locking protrusion 8e having a lower protrusion height than the lower annular flange 8d is formed on the lower side of the peripheral wall portion 8b of the lower cylinder 8 to protrude radially inward.

With the openings of both cylinders 7 and 8 facing each other, the peripheral wall 8b of the lower cylinder 8 is externally fitted into the peripheral wall 7b of the upper cylinder 7, and the upper cylinder 7 is inserted into the lower cylinder 8. When pushed in, the locking protrusion 7e of the upper cylinder body 7 passes over the locking protrusion 8e of the lower cylinder body 8, and the locking protrusions 7e and 8e are engaged with each other. As a result, the upper cylindrical body 7 and the lower cylindrical body 8 are integrally connected in a state where they are difficult to separate. That is, when the upper cylinder 7 and the lower cylinder 8 are fitted together, the peripheral wall 8b of the lower cylinder 8 covers the peripheral wall 7b of the upper cylinder 7 from the outside.

Two annular flanges 7d, 8d protrude in parallel from the circumferential walls 7b, 8b of the spout 6 (the circumferential walls 7b, 8b when the upper cylinder 7 and lower cylinder 8 are fitted together). ing. The lower end opening of the balloon body 5 is fitted over the mouth tube 6 from the upper tube body 7 side. In this case, the balloon body 5 is difficult to separate from the spout 6 because the thick wall portion 5a is fitted into the circumferential groove between the two annular flanges 7d and 8d.

Note that the spout 6 has a whistle function that emits a sound when the air inside the balloon body 5 passes through both the communication holes 7c and 8c. Further, on the inner surface of the peripheral wall portion 7b of the upper cylinder 7, a pair of rotation projections 7f are formed to protrude radially inward in a state of facing each other (only one is shown in FIG. 2(b)).

As shown in FIGS. 1, 2(a) to 2(c), and FIG. 5, the mouthpiece 6 is provided with a tapered cylindrical portion 9, which is an example of a protruding portion that extends in the opposite direction to the balloon body 5. . In the first embodiment, a tapered cylindrical portion 9 is integrally formed on the lower end side of the lower cylindrical body 8 so as to extend in the shape of a funnel that widens toward the end. The outer diameter D9 of the outward opening 9a in the tapered cylinder portion 9 is set to be larger than the outer diameter D6 of the mouth tube 6.

In the first embodiment, the outer diameter D6 of the mouth tube 6 corresponds to the outer diameter D6 of both the annular flanges 7d and 8d. The outer diameter D9 of the outward opening 9a is larger than the outer diameter D6 of both the annular flanges 7d and 8d (D9>D6).

At least one groove-shaped or hole-shaped gas escape recess 9c is formed in the tapered cylindrical portion 9, which has an inclined peripheral wall portion 9b that widens toward the end. The gas release recess 9c is basically for allowing the air that has passed through the communication holes 7c, 8c of the spout 6 from inside the balloon body 5 to smoothly discharge to the outside.

In the first embodiment, a pair (two locations) of upwardly recessed groove-shaped gas release recesses 9c are formed in the peripheral wall portion 9b of the tapered cylindrical portion 9, facing each other (Figs. 2(a) and 2(b). ) shows only one, and both are shown in Figure 2(c)). Each gas release recess 9c is formed to be longer vertically as its upper edge is located closer to the bottom plate portion 8a of the lower cylinder 8.

According to the above configuration, the mouth tube 6 is provided with the tapered tube portion 9 extending in the opposite direction to the balloon body 5, and the outer diameter D9 of the outward opening 9a in the tapered tube portion 9 is Since the diameter is larger than the outer diameter D6 of the tapered tube part 9, it is difficult for a person to hold the mouthpiece 6 in their mouth due to the large outer diameter of the tapered tube part 9. Inflating the balloon body 5 by blowing can be effectively suppressed, and hygiene problems caused by the act of blowing directly into the balloon body 5 can be eliminated.

In particular, in the first embodiment, since at least one groove-shaped or hole-shaped gas relief recess 9c is formed in the peripheral wall of the tapered cylindrical portion 9, it is difficult to force the mouthpiece 6 together with the tapered cylindrical portion 9 into the mouth. Breath cannot be directly blown into the balloon body 5 unless the balloon body 5 is opened (because the breath leaks from the gas relief recess 9c). Therefore, it is possible to more reliably prevent a person from inflating the balloon body 5 by holding the mouthpiece 6 in their mouth and blowing directly into it.

As shown in FIG. 1 and FIGS. 3 to 5, the launcher 3 that grips and releases the mouthpiece 6 of the rubber balloon 2 has a vertically cylindrical air supply nozzle 10 and an air supply nozzle 10 that is sandwiched between them. It has a pair of gripping levers 11 arranged on both sides.

The cylindrical hole 10a of the air supply nozzle 10 penetrates vertically. The upper end side (tip side) of the air supply nozzle 10 is formed into a tapered shape. A spout 6 is attached to the upper end side of the air supply nozzle 10. That is, the upper end side of the air supply nozzle 10 is inserted into at least the lower communication hole 8c of the spout 6 from below. A male threaded portion 10c serving as a male engagement portion is formed on the lower end side (base end side) of the air supply nozzle 10. The male threaded portion 10c is configured to be removable from a female threaded portion 12c which is a female engagement portion on the upper end side (front end side) of the cylinder 12 in the injection pump 4 (details will be described later).

Each gripping lever 11 is formed in a so-called 10-hand shape, and has a hook-shaped arm 11a connected to a body flange 10b formed in the middle of the length of the air supply nozzle 10. Each hook-shaped arm 11a is formed to protrude toward the air supply nozzle 10 from the longitudinal midway point of the corresponding gripping lever 11. In this case, the air supply nozzle 10 and each gripping lever 11 are constructed separately, but it goes without saying that they may be integrally formed.

A lock claw 11b extending toward the air supply nozzle 10 is formed on the upper end side (tip side) of each gripping lever 11. Each lock claw 11b is connected to the upper annular flange 7d (shoulder part of the mouthpiece 6) which the balloon body 5 covers of the mouthpiece 6 when the mouthpiece 6 of the rubber balloon 2 is attached to the upper end side of the air supply nozzle 10. equivalent) from above. By engaging both the locking claws 11b with the upper annular flange 7d of the mouthpiece 6 from above, the mouthpiece 6 and thus the rubber balloon 2 are held irremovably relative to the launcher 3.

A stopper piece 11c extending in a cantilever shape toward the air supply nozzle 10 is formed between the lock claw 11b and the hook-shaped arm 11a of each gripping lever 11. With the spout 6 of the rubber balloon 2 attached to the upper end of the air supply nozzle 10, each stopper piece 11c passes through the corresponding gas release recess 9c and supports the bottom plate 8a of the lower cylinder 8. (excessive insertion of the spout 6 is restricted).

Both gripping levers 11 have a locked position in which the upper end side thereof is close to the upper end side of the air supply nozzle 10, both locking claws 11b are close to the air supply nozzle 10, and a locking position in which both locking claws 11b are separated from the air supply nozzle 10. It is configured so that the posture can be changed.

When the lower end side (base end side) grip portion 11d of both gripping levers 11 is gripped so as to approach the air supply nozzle 10, both gripping levers 11 deform against the elasticity around the hook-shaped arm 11a and are locked. The claw 11b and the stopper piece 11c move in a direction away from the air supply nozzle 10, and both grip levers 11 are in the unlocked position.

Then, in the unlocked state, the mouthpiece 6 of the rubber balloon 2 is attached to the upper end of the air supply nozzle 10 (the upper end of the air supply nozzle 10 is inserted into at least the lower communication hole 8c of the mouthpiece 6). At this time, a corresponding stopper piece 11c is inserted into each gas release recess 9c of the tapered cylindrical portion 9.

When the grip portions 11d are loosened, the gripping levers 11 are deformed by elastic restoring force, and the locking claws 11b and the stopper piece 11c move in the direction toward the air supply nozzle 10, and the locking claws 11b are moved toward the air supply nozzle 10. By engaging with the upper annular flange 7d of the mouth tube 6 from above, both gripping levers 11 are in a locked position. As a result, the mouthpiece 6 and thus the rubber balloon 2 are held in a non-removable manner relative to the launcher 3 (see FIG. 5).

In this state (the state in which the rubber balloon 2 is gripped by the launcher 3), the lower communication hole 8c of the spout 6 is tightly brought into close contact with the midway portion of the air supply nozzle 10 near the upper end (see FIG. 5). Therefore, there is no fear that the air inside the rubber balloon 2 will leak out from the lower communication hole 8c of the mouthpiece 6, and the balloon body 5 can be easily inflated. Moreover, there is no fear that the rubber balloon 2 will be deflated while being held by the launcher 3.

As shown in FIGS. 1 and 5, the injection pump 4 that pumps air into the rubber balloon 2 includes a long cylinder 12 that can store air, and a piston rod 13 that is attached to the cylinder 12 so as to be able to move forward and backward. have. A portion of the piston rod 13 protrudes from the lower end (base end) of the cylinder 12, and a handle 14 is provided at the lower end (base end).

A female threaded portion 12c is provided at the upper end of the cylinder 12 and serves as a female engagement portion capable of engaging (screwing) a male threaded portion 10c formed at the lower end (base end) of the air supply nozzle 10. By pushing and pulling the piston rod 13, air inside the cylinder 12 is sent out from the upper end side (female threaded portion 12c) of the cylinder 12.

Note that a male threaded portion (not shown), which is a male engagement portion of the air needle 15, can also be engaged with and removed from the female threaded portion 12c on the upper end side of the cylinder 12. In this case, a female type engagement part (female threaded part 12c) is formed on the upper end side (tip side) of the cylinder 12, and a male type engagement part (male threaded part 10c) is formed on the lower end side (base end side) of the air supply nozzle 10. However, the relationship between males and females may be reversed. The male-type engaging part and the female-type engaging part are not limited to screw types, and may have a structure in which they do not separate once they are fitted, or a structure in which they can be separated by deforming the engaging claw, etc. Good too. The air supply nozzle 10 (launch tool 3) and cylinder 12 (injection pump 4) may be integrally configured.

When using the rubber balloon launch set 1, hold the rubber balloon 2 with the launcher 3, and connect the female threaded section 12c of the injection pump 4 at the upper end of the cylinder 12 with the male threaded section of the lower end of the air supply nozzle 10 of the launcher 3. 10c and by pushing and pulling the piston rod 13, the air in the cylinder 12 is sent into the balloon body 5 via the air supply nozzle 10 of the launcher 3 and the spout 6, and the balloon body 5 is inflated. .

When the balloon body 5 reaches an appropriate size, when the pushing and pulling of the piston rod 13 is stopped, the balloon body 5 stops expanding. is held in the launcher 3.

Thereafter, by grasping the grip portions 11d of both gripping levers 11 so as to approach the air supply nozzle 10 at the right time, both gripping levers 11 are placed in the unlocking position, and both locking claws 11b are placed in the upper annular shape of the mouth tube 6. It separates from the flange 7d. Then, the air inside the balloon body 5 is jetted outward from the spout 6, and the spout 6 of the rubber balloon 2 is detached upward from the upper end side of the air supply nozzle 10, and the jetting force of the air is used as a propulsive force. Rubber balloon 2 flies into the air.

According to the above configuration, the launcher 3 for the rubber balloon 2 includes an air supply nozzle 10 having a vertically elongated cylindrical shape and a pair of gripping levers 11 disposed on both sides of the air supply nozzle 10. In addition, on the proximal end side of the air supply nozzle 10, there is a female type or female type that can be engaged with a male type or female type engaging part 12c provided on the distal end side of the cylinder 12 of the injection pump 4 that injects gas into the balloon body 5. Since the male engaging portion 10c is provided, the injection pump 4 for injecting gas can be easily attached to the firing tool 3. Therefore, even people who have difficulty inflating the balloon body 5 by directly blowing into the balloon, such as children and women with small lung capacity, can use the injection pump 4 via the launcher 3 to inflate the balloon. The main body 5 can be easily inflated. There is no need to directly blow into the balloon body 5 to inflate it. There is no fear that the air will escape while the rubber balloon 2 is being held by the launcher 3.

Furthermore, each gripping lever 11 has a lock claw 11b that extends toward the air supply nozzle 10 and is engageable with the shoulder portion (upper annular flange 7d) of the spout 6, and a cantilever beam that extends toward the air supply nozzle 10. A stopper piece 11c extending in the shape of a shape is formed, and each stopper piece 11c is configured to support the bottom side of the mouthpiece 6 when the mouthpiece 6 is attached to the tip side of the air supply nozzle 10. Therefore, when the spout 6 is attached to the tip side of the air supply nozzle 10, the lock claw 11b and the stopper piece 11c can stably hold the spout 6 so that it cannot be removed. When the tapered cylinder portion 9 is provided, the stopper piece 11c is inserted into the gas relief recess 9c, so that the holding stability of the mouthpiece 6 with respect to the firing tool 3 is extremely high. Even if there is no tapered cylinder portion 9, the mouthpiece 6 can be stably held against the firing tool 3 due to the synergistic action of the lock claw 11b and the stopper piece 11c.

By using the rubber balloon launch set 1 consisting of the rubber balloon 2, the launch tool 3, and the injection pump 4 as described above, it is possible to prevent people from directly blowing into the balloon body 5 to inflate it, which is a sanitary issue. This will prevent problems from occurring.

6 and 7 show another example of the mouthpiece of the first embodiment. In the first embodiment, the tapered cylindrical portion 9 was integrally formed on the lower end side of the lower cylindrical body 8 so as to extend in the shape of a funnel that widened toward the end. A separate tapered cylindrical portion 9 may be attached to the lower end side of the cylindrical body 8 by adhesive or the like. Further, as shown in another example of FIG. 7, the gas relief recess 9c formed in the peripheral wall portion 9b of the tapered cylindrical portion 9 may have at least one groove shape or hole shape, and there may be a plurality of gas relief recesses 9c. do not have. When the pair of stopper pieces 11c are formed on the firing tool 3, it is preferable that the two gas release recesses 9c are formed into opposing groove shapes. It goes without saying that the same effects as in the first embodiment can be achieved in the cases of FIGS. 6 and 7 as well.

From FIG. 8 onwards, other embodiments of the mouthpiece are shown. Here, in the second embodiment and subsequent embodiments, components having substantially the same configuration and operation as those of the first embodiment are given the same reference numerals as those of the first embodiment, and detailed explanation thereof will be omitted.

The mouth pipe 16 of the second embodiment shown in FIGS. 8(a) to (c) is of a two-part type similar to the first embodiment, but the lower annular flange 8d is removed from the lower cylinder body 8. . Instead, a stepped portion 17 is formed on the inner surface of the peripheral wall portion 8b of the lower cylinder 8, with the upper inner diameter being larger and the lower inner diameter being smaller. An inner peripheral corner of the stepped portion 17 serves as a locking protrusion 8e.

In the second embodiment, when the upper cylinder body 7 and the lower cylinder body 8 are fitted together, they are surrounded by the peripheral wall part 7b of the upper cylinder body 7, the upper annular flange 7d, the peripheral wall part 8b of the lower cylinder body 8, and the stepped part 17. A gap space is formed. The thick portion 5a of the balloon body 5 is fitted into the gap space. Therefore, the balloon main body 5 does not separate from the spout 6 unless the upper cylinder 7 and the lower cylinder 8 are separated. In the second embodiment, the outer diameter D6 of the mouth tube 16 corresponds to the outer diameter D6 of the peripheral wall portion 8b of the lower cylinder body 8.

The spout 26 of the third embodiment shown in FIGS. 9(a) to 9(c) is a modification of the second embodiment. A stepped portion 27 is formed on the inner surface of the peripheral wall portion 8b of the lower cylinder 8. The step portion 27 has a larger inner diameter on the upper side and a smaller inner diameter on the lower side. The upper cylinder body 7 and the lower cylinder body 8 are fitted into each other, and in the gap space surrounded by the peripheral wall part 7b of the upper cylinder body 7, the upper annular flange 7d, the peripheral wall part 8b of the lower cylinder body 8, and the stepped part 27, The thick part 5a of the balloon body 5 is fitted. An extension cylinder part 28 is formed on the bottom plate of the upper cylinder body 7 and projects downward, and the extension cylinder part 28 is inserted into the lower communication hole 8c of the lower cylinder body 8. The air supply nozzle 10 is inserted into the cylindrical hole 28a of the extended cylindrical portion 28. An annular pawl 29 is formed at the lower end edge of the extension tube portion 28 and projects radially outward. In the third embodiment, the outer diameter D6 of the mouth tube 26 corresponds to the outer diameter D6 of the peripheral wall portion 8b of the lower cylinder body 8.

10 and 11 show a case where three-part type mouthpieces 36, 46 are adopted. A mouthpiece 36 according to the fourth embodiment shown in FIG. 10 is configured such that a middle cylinder 37 is fitted between an upper cylinder 7 and a lower cylinder 8. The thick portion 5a of the balloon body 5 is sandwiched between the upper cylinder 7 and the middle cylinder 37. In the fourth embodiment, the outer diameter D6 of the mouth tube 36 corresponds to the outer diameter D6 of the peripheral wall portion 8b of the lower cylinder body 8.

In the spout 46 of the fifth embodiment shown in FIG. It is configured to fit over the body 47. The thick portion 5a of the balloon body 5 is sandwiched between the outer cylinder 47 and the upper cylinder 7. In the fourth embodiment, the outer diameter D6 of the mouth tube 36 corresponds to the outer diameter D6 of the peripheral wall portion 8b of the lower cylinder body 8. In the fifth embodiment, the outer diameter D6 of the mouth tube 46 corresponds to the outer diameter D6 of the outer cylinder body 47.

The sixth embodiment shown in FIGS. 12(a) and 12(b) is a modification of the first embodiment, and is a two-part type similar to the first embodiment. In the mouth tube 56 of the sixth embodiment, the tapered tube portion is omitted, and a portion of the lower annular flange 8d of the lower tube body 8 is configured to extend outward in the radial direction to form the protruding portion 9. This is different from the embodiment. The seventh embodiment shown in FIGS. 13(a) and 13(b) is a modification of the second embodiment, and is a two-part type similar to the first and second embodiments. The opening tube 66 of the seventh embodiment also omits the tapered tube portion, and a part of the peripheral wall portion 8b of the lower tube body 8 is configured to extend outward in the radial direction to form the protruding portion 9. It is different from the one in form.

Needless to say, when any of the mouthpieces 16 to 66 of the second embodiment and subsequent embodiments is adopted, the same effects as those of the first embodiment can be achieved. Furthermore, in any of the second to fifth embodiments and subsequent embodiments, the tapered cylinder portion 9 may be configured separately from the lower cylinder body 8, or a plurality of gas escape recesses 9c may be formed. The form of the protrusion is not limited to the embodiments described above. The combination with the firing tool 3 and the injection pump 4 can be realized in any of the second to seventh embodiments in the same manner as in the first embodiment shown in FIGS. 1 to 5. The air supply nozzle 10 and each gripping lever 11 may be configured separately or may be configured integrally.

Note that the configuration of each part in the present invention is not limited to the illustrated embodiment, and can be variously modified without departing from the spirit of the present invention.

D6 Outer diameter of the mouthpiece D9 Outer diameter of the outward opening 1 Rubber balloon launch set 2 Rubber balloon 3 Launcher 4 Injection pump 5 Balloon main body 5a Thick wall part 6 Mouthpiece 7 Upper cylinder body 7a Top plate part 7b Peripheral wall part 7c Upper communication hole 7d Upper annular flange 8 Lower cylinder 8a Bottom plate 8b Peripheral wall 8c Lower communication hole 8d Lower annular flange 9 Tapered cylinder 9a Outward opening 9b Peripheral wall 9c Gas relief recess 10 Air supply nozzle 10a Cylindrical hole 10b Body flange 10c Male threaded part 11 as a male engagement part Grip lever 11a Hook-shaped arm 11b Lock claw 11c Stopper piece 11d Grip part 12 Cylinder 12c Female threaded part 13 as a female engagement part Piston rod

Claims (2)

A rubber balloon with a mouthpiece attached to the open end of the balloon body,
The mouth tube is provided with a tapered cylindrical portion configured to have a larger diameter than the outer diameter and extend in a direction opposite to the balloon body, and the outer diameter of the outward opening of the tapered tube portion is larger than the outer diameter of the mouth tube. The diameter is larger than the outside diameter of the tube,
rubber balloon. At least one groove-shaped or hole-shaped gas relief recess is formed in the peripheral wall portion of the tapered cylindrical portion.
The rubber balloon according to claim 1.

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