JP7117054B1 - Stretchable body used for blowback and blowback containing said stretchable body - Google Patents

Abstract

A stretchable body used for blowing back, which does not easily break even if the length in the longitudinal direction is increased. SOLUTION: An elastic body is used for blowing back, in which an elastic body is stretched when air is blown by a user, and the elastic body is unwound in a spiral shape when no air is blown, wherein the elastic body is: a substrate and a linear body that imparts an unwinding force to the substrate; the substrate has an opening through which a user blows air; The inner surface side of the substrate wound in a spiral shape is defined as a first surface, and the outer surface side thereof is defined as a second surface. The stretchable body, wherein the linear body is arranged in the longitudinal direction on both the first surface and the second surface when the stretching direction of the material is defined as the longitudinal direction. [Selection drawing] Fig. 3

Description

The disclosure in this application relates to a telescopic body used for blowback and a blowback including the telescopic body.

Blowbacks have long been known as blowback toys. This blowback is performed by blowing air from one end of a cylindrical elastic body (bag-shaped part) containing a linear spring material along the longitudinal direction, and the elastic body stretches. , the stretchable body is spirally wound by the elastic force of the spring material.

Such blowbacks have conventionally been used mainly as children's toys, but in recent years, blowbacks that can be used for purposes such as health promotion, treatment, and beauty have been developed. For example, Patent Literature 1 describes that the cross section of a linear body is formed by crushing a circle from above and below in order to use it properly for a longer period of time. Further, Patent Document 2 discloses blowback in which the expandable body does not stretch unless the force of blowing air from the mouthpiece is equal to or greater than a predetermined value.

Japanese Patent No. 6966820 Japanese Patent No. 5878229

As described in Patent Literature 1 and Patent Literature 2, the blowback has a structure in which the extensible body (bag-like portion) extends along the longitudinal direction when air is blown from one end of the extensible body. In the future, it is envisioned that the longitudinal direction of the expandable body will be made longer depending on the intended use of the blowback. However, when the conventional elastic body is simply lengthened, there arises a problem that the elastic body breaks. Therefore, the present inventors conducted extensive research on the structure of the stretchable body, and found that
(1) In the conventional stretchable bodies described in Patent Documents 1 and 2, etc., the linear body is arranged only on the inner surface side of the spirally wound state.
(2) When the linear body is arranged on both the inner and outer surfaces of the spirally wound state, the length of the stretchable body in the longitudinal direction becomes longer than when the linear body is arranged only on the inner surface. the stretchable body becomes difficult to break,
newly discovered.

That is, the object of the disclosure in the present application is to provide a telescopic body employing a novel structure and a blowback including the telescopic body for use in blowback.

The disclosure of the present application relates to a telescopic body used for blowback and a blowback including the telescopic body, which are described below.

(1) A stretchable body used for blowing back, in which the stretchable body expands when air is blown by the user, and the stretchable body is unwound in a spiral shape when no air is blown,
The stretchable body is
a substrate;
a linear body that imparts an unwinding force to the substrate;
including
The base material is
having an opening through which the user blows air;
It is closed except for the opening, and is formed so that it can be deformed into a substantially cylindrical shape when air is blown from the opening,
When the inner surface side of the base material wound in a spiral shape is defined as a first surface, the outer surface side is defined as a second surface, and the extending direction of the base material is defined as the longitudinal direction, the linear body An elastic body arranged longitudinally on both sides of said first side and said second side.
(2) The stretchable body according to (1) above, wherein the number of the linear bodies arranged on the first surface and the number of the linear bodies arranged on the second surface are the same.
(3) The stretchable body according to (1) above, wherein the number of linear bodies arranged on the first surface and the second surface is larger on the second surface.
(4) When the total unwinding force of the linear body arranged on the first surface is defined as P1, and the total unwinding force of the linear body arranged on the second surface is defined as P2. ,
The stretchable body according to (1) above, wherein P1=P2 or P1<P2.
(5) the substrate is
formed from a first substrate and a second substrate;
The stretchable body according to (1) above, wherein peripheral portions of the first base material and the second base material are adhered with an adhesive except for the opening.
(6) The stretchable body according to any one of (1) to (5) above, wherein a dedicated tube for connection to the mouthpiece is formed in the opening.
(7) the stretchable body according to any one of (1) to (5) above;
a mouthpiece connected to the opening of the expandable body;
Including blowback.
(8) the stretchable body according to (6) above;
a mouth-blowing body connected to the exclusive pipe;
Including blowback.

The stretchable body disclosed in the present application is less likely to break even if the length in the longitudinal direction is increased, compared to conventional stretchable bodies. Therefore, the application range of blowback is expanded.

FIG. 1 is a plan view of a state in which the blowback is extended. FIG. 2 is a front view of the stretchable body in a spirally unwound state. 3 is a cross-sectional view taken along line XX' of FIG. 1. FIG.

Below, a stretchable body (hereinafter sometimes simply referred to as "stretchable body") used for blowback disclosed in the present application and a blowback including the stretchable body will be described in detail. Note that the position, size, range, and the like of each configuration shown in the drawings may not represent the actual position, size, range, and the like, in order to facilitate understanding. As such, the disclosure of the present application is not necessarily limited to the locations, sizes, ranges, etc. disclosed in the drawings.

Also, in this specification,
(1) The numerical range represented by "~" means a range that includes the numerical values described before and after "~" as lower and upper limits,
(2) Regarding numerical values, numerical ranges, and qualitative expressions (e.g., expressions such as “same” and “same”), numerical values, numerical ranges, and properties that include errors generally accepted in the technical field shows,
(3) When describing "approximately 〇〇 shape", in addition to the accurate 〇〇 shape, it includes a shape that can be roughly understood as 〇〇 shape.
is interpreted as

(Embodiment of telescopic body and blowback)
Embodiments of telescoping bodies and blowback embodiments will be described with reference to FIGS. 1 to 3 . FIG. 1 is a plan view of a state in which the blowback is extended. FIG. 2 is a front view of the stretchable body in a spirally unwound state. 3 is a cross-sectional view taken along line XX' of FIG. 1. FIG.

In the example shown in FIGS. 1 and 2, the blowback 10 includes a telescopic body 1, a dedicated tube body 2, and a mouth blowing body 3. As shown in FIG. For convenience of explanation, an embodiment of the extensible body 1 and an embodiment of the blowback 10 will be collectively described, but in the embodiment of the extensible body 1, the mouthpiece 3 is not an essential component. Moreover, in the embodiment of the expandable body 1, the dedicated tube 2 is not an essential component, but may be included optionally.

The expandable body 1 expands when air is blown by the user, and is spirally unwound when no air is blown. The stretchable body 1 includes a substrate 11 and a linear body 12 that applies an unwinding force to the substrate 11 . The base material 11 has an opening 11c through which air is blown by the user, and is closed except for the opening 11c. Therefore, the base material 11 is a bag-like member that can be deformed into a substantially cylindrical shape when air is blown from the opening 11c.

In the example shown in FIG. 3, the base material 11 has a first base material 11a that becomes the inner surface side (first surface 11a) when spirally wound, and an outer surface side (second surface 11a) when spirally wound. 11b) is formed by bonding the peripheral portion with an adhesive 13 except for the opening portion 11c. Alternatively, substrate 11 may be formed by folding a generally rectangular sheet, as described in US Pat. The method of forming the base material 11 is not particularly limited as long as the base material 11 is formed into a bag shape that can be deformed into a substantially cylindrical shape when air is blown through the opening 11c.

In addition, in the method of forming the bag-shaped base material 11 by folding a substantially rectangular sheet described in Patent Documents 1 and 2, the base material 11 is formed on either the first surface 11a or the second surface 11b. It will be layered. Therefore, characteristics such as strength of the first surface 11a and the second surface 11b may change depending on the length of the laminated portion of the base material 11 and the thickness of the adhesive layer. On the other hand, in the example shown in FIG. 3, if the same material is used for the first base material 11a and the second base material 11b, the characteristics such as the strength of the first surface 11a and the second surface 11b can be substantially the same. The stretchable body disclosed in the present application is characterized in that linear bodies 12 that apply unwinding force to base material 11 are arranged on both sides of first surface 11a and second surface 11b. In order to stabilize the quality of the manufactured stretchable body 1, it is desirable that the conditions other than the unwinding force of the linear body 12 be constant. Therefore, although not limited, the base material 11 shown in FIG. 3 is preferable as the base material 11 of the stretchable body 1 disclosed in the present application.

In this specification, the term “substantially cylindrical” means that the base material 11 changes from a collapsed state (the state shown in FIG. 3) to an expanded state (not shown) by blowing air from the opening 11c. means Therefore, the cross section of the expanded substrate 11 is not limited to a substantially circular shape, and may be substantially elliptical or the like.

The length of the stretchable body 1 (longitudinal direction, symbol L in the example shown in FIG. 1) is determined by the purpose of use of the blowback 10 such as health promotion, treatment, beauty, etc., and the user's condition such as oral function state and physical condition. can be set accordingly. The stretchable body 1 disclosed in the present application can increase the length of the stretchable body 1 . As shown in the examples described later, the length of the stretchable body 1 is not limited, but is 600 mm or more, 650 mm or more, 700 mm or more, 800 mm or more, 900 mm or more, 1000 mm or more, 1100 mm or more, 1200 mm or more, 1300 mm or more. can be The upper limit may be set according to the number of linear bodies 12 to be arranged, as shown in Examples and Comparative Examples which will be described later.

The width of the elastic body 1 (W in the example shown in FIG. 1) may also be appropriately set according to the purpose of use. Although not limited, the width W may be, for example, 20 mm or more, 25 mm or more, or 30 mm or more. Moreover, the width W may be, for example, 50 mm or less, 45 mm or less, 40 mm or less, or 35 mm or less.

In the example shown in FIG. 1, the shape of the base material 11 in a state in which the stretchable body 1 is stretched is substantially rectangular in plan view. The shape of the base material 11 in plan view is not limited to a substantially rectangular shape as long as the function of the stretchable body 1 disclosed in the present application can be achieved. For example, the width W on the side of the opening 11c is long, and the width W becomes shorter toward the tip side (the side opposite to 11c). may be substantially trapezoidal in which the width W increases toward the opposite side).

As described above, the material used for the base material 11 is not particularly limited as long as it can be deformed into a substantially cylindrical shape when air is blown through the opening 11c. Paper, resin sheets, and the like having predetermined thickness, strength, density, and durability can be used.

The linear body 12 can spirally (coil) the base material 11 in a state where no external force is applied (a state in which air is not blown into the extensible body 1). A force acts to spirally unwind the material 11 . The unwinding force (elastic force/elastic modulus) of each linear body 12 may be appropriately set according to the number of linear bodies 12 arranged on the first surface 11a and the second surface 11b. The linear body 12 is, for example, a wire or the like made of a material such as stainless steel. The linear body 12 may have a substantially circular cross section, or may have a laterally elongated cross section as described in Patent Document 1, and may be arranged so that the lateral surfaces are along the first surface 11a and the second surface 11b. good.

The linear bodies 12 are arranged in the longitudinal direction of both the first surface 11a and the second surface 11b. In the conventional blowback described in Patent Documents 1 and 2, etc., the linear body is arranged only on the first surface 11a side. Therefore, the stretchable body 1 disclosed in the present application has a novel structure that has not been disclosed in the prior art.

As long as the linear bodies 12 are arranged in the longitudinal direction of both the first surface 11a and the second surface 11b, the number of the linear bodies 12 arranged on each surface is not particularly limited. As shown in Examples and Comparative Examples, when wires with the same unwinding force are used, the number of linear bodies 12 arranged on second surface 11b is equal to the number of linear bodies 12 arranged on first surface 11a. and more preferably larger than the number of linear bodies 12 arranged on first surface 11a.

Further, from the results of Examples and Comparative Examples, the total unwinding force of linear body 12 placed on first surface 11a is defined as P1, and the unwinding force of linear body 12 placed on second surface 11b is defined as P1. When the total force is defined as P2, it may be defined that P1=P2 is preferable, and P1<P2 is more preferable. When defined by the total unwinding force, the unwinding force of each linear body 12 may be different. For example, when the unwinding force of each linear body 12 arranged on the second surface 11b is greater than the unwinding force of each linear body 12 arranged on the first surface 11a, P1=P2, or If P1<P2, the number of linear bodies 12 arranged on second surface 11b may be less than the number of linear bodies 12 arranged on first surface 11a.

Linear body 12 may be fixed to first surface 11a and second surface 11b using an adhesive or the like. The stretchable body 1 may optionally include a first surface covering sheet 14a and a second surface covering sheet 14b. When the first surface covering sheet 14a and the second surface covering sheet 14b are included, the linear body 12 is held so as to be sandwiched between the first surface 11a and the first surface covering sheet 14a, and the second surface 11b and the second surface covering are held. It can be held so as to be sandwiched between sheets 14b. Therefore, the linear body 12 can be firmly fixed by the first surface 11a and the second surface 11b. In the example shown in FIG. 3, the first surface covering sheet 14a and the second surface covering sheet 14b are shown apart from the first surface 11a and the second surface 11b except for the ends for easy understanding. ing. The first surface covering sheet 14a and the second surface covering sheet 14b may be arranged so as to adhere to the first surface 11a and the second surface 11b except for the linear body 12 portion. The first surface covering sheet 14a and the second surface covering sheet 14b may be made of the same material as the base material 11, or may be made of a different material.

The telescopic body 1 may optionally include a dedicated tube 2 . The dedicated tube body 2 is a substantially cylindrical dedicated tube portion connected to the opening 11 c of the base material 11 . The exclusive tube 2 is, for example, a cylindrical body made of a predetermined material such as paper or resin, and one end thereof is inserted into the base material 11 through the opening 11c. The base material 11 and the dedicated tube 2 may be adhered with an adhesive or the like at the overlapping portion, or the boundary portion between the base material 11 and the dedicated tube 2 may be fixed with a vinyl tape or the like.

The mouthpiece 3 may have a flow rate adjusting mechanism for adjusting the amount of air flowing into the bag-shaped base material 11 . In some cases, a plurality of stretchable bodies 1 having different unwinding forces are prepared according to the purpose of use, and suitable stretchable bodies 1 and mouth blowing bodies 3 are used in combination. When the expandable body 1 includes the exclusive tube 2, the connection between the expandable body 1 and the mouthpiece 3 is facilitated. If the combination of the extensible body 1 and the mouthpiece 3 is not changed, the mouthpiece 3 may be directly connected to the extensible body 1 and fixed.

The mouthpiece 3 is a substantially cylindrical mouthpiece that a user holds in his/her mouth and blows air into. The blowback 10 can be provided by connecting the mouthpiece 3 directly to the telescopic body 1, or by connecting the mouthpiece 3 to the dedicated tube 2 when the telescopic body 1 includes the special tube 2. As the mouthpiece 3, a mouthpiece 3 known in this technical field can be used. The mouthpiece 3 may be made of, for example, resin, and may include a flow control mechanism or the like as necessary.

Examples are provided below to specifically describe the embodiments disclosed in the present application, but the examples are merely for the purpose of describing the embodiments. It is not intended to limit or limit the scope of the inventions disclosed in this application.

[Fabrication of stretchable body]
<Material>
- First base material and second base material: glassine paper (manufactured by Nippon Paper Industries Co., Ltd., thickness: 30.5 g/m ² )
・Wire: SUS304 (diameter: 0.2 mm)

<Manufacturing method>
An elastic body was produced by the following procedure.
(1) Two sheets of glassine paper (a first base material and a second base material) were pasted together with an adhesive except for openings to prepare a bag-like base material.
(2) The number of wires shown in Table 1, which will be described later, was placed on the first surface, and a first surface covering sheet made of paper was adhered to the first surface to cover and fix the wires to the first surface.
(3) Subsequently, in order to arrange the wire on the second surface, the substrate prepared in (2) above was wound once.
(4) The wound base material is stretched, the number of wires shown in Table 1 described later is placed on the second surface, and the second surface covering sheet made of the same material as the first surface covering sheet is adhered to the second surface. By doing so, the wire was covered and fixed to the second surface.
(5) The base material on which the wire was arranged was cut into various lengths shown in Table 1. In addition, the width was 33 mm.
(6) The substrate on which the cut wire was arranged was ironed with a metal rod, and an elastic body was produced by applying an unwinding force to the wire.
In the steps (2) and (4) above, when one wire was arranged, it was arranged at an intermediate position in the width W direction. When two or more wires were arranged, they were arranged at equal intervals from the end in the width W direction at intervals of W/n+1, where n is the number of wires. Comparative Examples 1 to 3 were produced in the same procedure as above, except that the wire was not arranged on the second surface.

[Production of blowback]
One end of the exclusive pipe made of paper was inserted into the stretchable body produced in the above [Fabrication of stretchable body], and a mouthpiece made of resin was inserted into the other end of the exclusive pipe to make a blowback. One end of the exclusive tube was inserted about 10 mm into the base material from the opening, and the vicinity of the boundary between the extensible body and the exclusive tube was fixed with vinyl tape. The vicinity of the boundary between the exclusive pipe body and the mouthpiece body was also fixed with vinyl tape.

[Evaluation of manufactured blowback]
The elastic body was evaluated by repeating the operation of blowing air into the prepared blowback to extend the unwound elastic body and stopping the blowing of air to unwind the elastic body. Evaluation criteria are as follows.
◯: It did not break even after 50 or more stretch operations.
Δ: Broken within 5 stretching operations.
x: It broke by the 1st expansion-contraction operation.
Note that the term "break" means that after blowing air to extend the stretchable body, the stretchable body breaks when the stretchable body is unwound by stopping the blowing of air.

Table 1 shows the length of the stretchable body, the number of wires arranged on the first and second surfaces, and the evaluation results. The evaluation results of Examples 1 to 12 and Comparative Examples 1 to 3 shown in Table 1 are the average values of 10 samples.

As is clear from Table 1, compared to the conventional elastic body in which wires are arranged only on the first surface, the elastic body is significantly longer by arranging wires on the second surface in addition to the first surface. Confirmed that it can be done. In addition, since there was a tendency that if the number of wires arranged on the second surface was increased, it would become difficult to break even if the stretchable body was lengthened. It has been confirmed that it is preferable to increase the number of wires arranged on the second surface than on the first surface.

The stretchable body disclosed in the present application and the blowback including the stretchable body are less likely to break than the conventional stretchable body even if the length of the stretchable body in the longitudinal direction is increased. Therefore, the range of applications in using blowbacks for health promotion, therapy, beauty, toys, etc. is expanded. It is useful for health equipment industry, medical industry, toy industry, etc.

DESCRIPTION OF SYMBOLS 1... Expandable body 11... Base material 11a... 1st base material (1st surface) 11b... 2nd base material (2nd surface) 11c... Opening part 12... Linear body 13... Adhesive, 14a... First surface covering sheet, 14b... Second surface covering sheet, 2... Exclusive pipe body, 3... Mouth blowing body, 10... Blowback

Claims (8)

When a user blows air, the stretchable body expands, and when the air is not blown, the stretchable body is unwound in a spiral shape.
The stretchable body is
a substrate;
a linear body that imparts an unwinding force to the substrate;
including
The base material is
having an opening through which the user blows air;
It is closed except for the opening, and is formed so that it can be deformed into a substantially cylindrical shape when air is blown from the opening,
When the inner surface side of the base material wound in a spiral shape is defined as a first surface, the outer surface side is defined as a second surface, and the extending direction of the base material is defined as the longitudinal direction, the linear body An elastic body arranged longitudinally on both sides of said first side and said second side. The stretchable body according to claim 1, wherein the number of linear bodies arranged on the first surface and the number of the linear bodies arranged on the second surface are the same. The stretchable body according to claim 1, wherein the number of linear bodies arranged on the first surface and the second surface is larger on the second surface. When the total unwinding force of the linear body arranged on the first surface is defined as P1, and the total unwinding force of the linear body arranged on the second surface is defined as P2,
The elastic body according to claim 1, wherein P1=P2 or P1<P2. The base material is
formed from a first substrate and a second substrate;
The stretchable body according to claim 1, wherein peripheral portions of the first base material and the second base material are adhered with an adhesive except for the opening. The stretchable body according to any one of claims 1 to 5, wherein a dedicated tube for connection to the mouthpiece is formed in the opening. The stretchable body according to any one of claims 1 to 5,
a mouthpiece connected to the opening of the expandable body;
Including blowback. An elastic body according to claim 6;
a mouth-blowing body connected to the exclusive pipe;
Including blowback.

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