JP6360129B2 - An umbrella made of synthetic resin film. - Google Patents

Description

  The present invention relates to an umbrella in which an umbrella cloth is formed of a synthetic resin film.

  An umbrella in which an umbrella cloth is formed of a synthetic resin film is generally called a “vinyl umbrella” and is commonly used. This kind of umbrella is made of a synthetic resin film and is not easily creased. Therefore, when the umbrella is closed, the umbrella cloth is folded in a clear and permanent position like a woven umbrella cloth. A typical fold is not formed, and the umbrella cloth is likely to be bent into an irregular hook shape. This problem is remarkable in the folding umbrella as disclosed in Patent Document 1 and Patent Document 2. For this reason, when folding an umbrella, the work of making a crease while stretching a complicated folded fold with a finger must be performed over the entire umbrella cloth, and the folding work is very complicated and troublesome. It took time and effort. In particular, when the umbrella cloth is formed of a transparent synthetic resin film, since the transparent synthetic resin film is often processed so as not to be creased, folding is further troublesome.

Therefore, conventionally, as disclosed in Patent Document 1, some devices have been devised to facilitate folding by attaching an auxiliary material made of metal, plastic, or the like along the fold of the umbrella cloth. .
However, the method of attaching the auxiliary material made of a member different from the umbrella cloth to the umbrella cloth not only complicates the processing as the umbrella cloth, but also a part of the umbrella cloth depending on the type of the auxiliary material and how to attach it. Since the thickness, hardness, etc. of the material becomes extremely large, it is difficult to fold the umbrella, or the folded umbrella cannot be rolled up and bundled.

  A similar problem exists for non-foldable umbrellas. In other words, there are 16 long umbrellas that have more than 8 normal bones. For long umbrellas with such a large number of bones, the manufacture of umbrella fabrics consisting of a plurality of triangular booth pieces is required. In order to improve efficiency, usually, the same number of booth pieces as the number of parent bones are joined together to form an umbrella cloth. By integrating two adjacent booth pieces, half the number of parent bones (16 bones) In this case, the umbrella fabric may be formed using 8 booth pieces. The umbrella fabric formed in this way is located on the odd-numbered master bones when the joints of adjacent booth pieces are counted in order, and attached to the odd-numbered master bones, and The intermediate portion is stretched on the master bone in an arrangement that is positioned on the even-numbered master bone and is not attached to the even-numbered master bone. The tip part of the middle part of each booth piece is bound to the tip (dew) of the even-numbered master bone.

  When the long umbrella is closed, the umbrella cloth is bent inward at a position along each of the main bones. However, since the joint portion of the booth piece is bound to the odd number of main bones, The middle part of each booth piece is not bound to the even-numbered master bone except for the tip part, so that it is difficult to bend correctly along the master bone. It tends to be in an irregularly bent state away from the parent bone.

JP-A-8-299042 JP 2002-262914 A

  The technical problem of the present invention is that an umbrella in which the umbrella cloth is formed of a synthetic resin film is provided with a means for assisting formation of a fold at a position where a fold is formed when the umbrella cloth is closed. The purpose is to make it easier to close the umbrella by forming eyes.

In order to solve the above-mentioned problems, according to the present invention, an umbrella bone that can be opened and closed and foldable and an umbrella cloth stretched on the umbrella bone are provided, and the umbrella bone has a hand attached to the lower end. And a plurality of bendable bones radially connected to the center rod, and the umbrella cloth is formed by joining a plurality of triangular booths made of a synthetic resin film. The joints of adjacent booth pieces are stretched on the master bone in an arrangement so as to follow the master bone, and assist the formation of the fold at the position of the fold formed when the umbrella fabric is folded. It has a fold guide, and the fold guide is formed by a fold line that is recessed in a groove shape, and is vertically oriented from the top side of the umbrella cloth toward the peripheral edge at the center position in the width direction of the booth piece. a plurality of folds extending lines, the side end portion of the booth piece from an intermediate portion of the vertical fold lines Towards which have a plurality of folds lines extending sideways, in the crease guide, said plurality of folds lines are mutually formed in parallel while maintaining a closely spaced than the width of該折th line There is provided an umbrella having an umbrella cloth formed of a synthetic resin film .

In the present invention, in the portion of the fold line, compared with a portion where該折th line is not formed, the umbrella cloth that has been thinned and high density.

In the present invention, the vertical fold line is divided into an upper line located above an intermediate portion intersecting with the horizontal fold line, and a lower line located below the intermediate portion. The lower line may be discontinuous with each other by a cut formed in the intermediate portion.
In this case, the positions of the upper and lower lines of the vertical fold line may be shifted from each other by ½ pitch.

  In the present invention, the umbrella cloth is formed with a ventilating opening that can be freely opened and closed at a part of the joint portion, and the venting opening is opened when an outward air flow is directed from the inside to the outside of the umbrella, It is desirable to be formed so as to be closed when the direction air flow is not operated.

Further, according to the present invention, the umbrella bone includes an openable and closable umbrella bone, and an umbrella cloth stretched around the umbrella bone, the umbrella bone having a hand attached to a lower end thereof, and the intermediate rod A plurality of skeletons that are radially connected, and the umbrella cloth is formed by sequentially joining a plurality of booth pieces made of a synthetic resin film, and the number of booth pieces is equal to the number of the skeleton bones. The umbrella cloth is bonded to the odd-numbered master bone with the joint part of adjacent booth pieces positioned on the odd-numbered master bone, and the intermediate part of the booth piece is positioned on the even-numbered master bone. The umbrella is closed at a position along the even-numbered bone at the middle part of the booth piece in a non-binding arrangement with respect to the even-numbered bone. fold guide is provided to assist the formation of folds along the parent bone when,該折th guide recessed groove plurality Is formed by the fold line forming said plurality of folds lines, characterized in that it is formed in parallel to each other while maintaining a closely spaced than the width of該折th line, the umbrella cloth with synthetic resin films Umbrellas are provided.

  According to the present invention, a fold guide for assisting the formation of the fold is formed at a position where the umbrella cloth becomes a fold when the umbrella is closed, and the fold guide is formed into a groove-like fold line. The umbrella cloth is easy to bend along the fold line, and the fold line is a guide for the position at which the fold is formed. Therefore, the umbrella cloth is bent along the fold line. By doing so, the umbrella can be easily closed and folded.

It is a perspective view which shows the folding umbrella which is 1st Embodiment of the umbrella which concerns on this invention in the open state. It is a top view of the folding umbrella of FIG. It is a side view which shows the state of an umbrella bone when a folding umbrella is closed. FIG. 3 is a partially enlarged view of FIG. 2. It is an expanded sectional view along the VV line of FIG. It is principal part sectional drawing which shows the method of forming a crease line in umbrella cloth. It is a perspective view explaining the process of folding a folding umbrella. It is an expanded sectional view in alignment with the VIII-VIII line of FIG. It is sectional drawing along the IX-IX line of FIG. It is sectional drawing along the XX line of FIG. It is a perspective view of the state which folded the folding umbrella. It is a principal part front view which shows the heterogeneous example of a crease line. It is a principal part enlarged view of FIG. It is a principal part top view which shows a part of long umbrella which is 2nd Embodiment of the umbrella which concerns on this invention.

  1-4 show a folding umbrella which is a first embodiment of an umbrella according to the present invention. The folding umbrella includes an umbrella bone 1 formed to be openable and foldable, and the umbrella bone 1. It is formed with the umbrella cloth 2 stretched around.

  As shown in FIG. 3, the umbrella bone 1 includes a center rod 10 having a hand 11 attached to the lower end, a fixed crosspiece 12 fixed to the upper end of the center rod 10, and a proximal end portion arranged radially. Are connected to the stationary wheel 12 so as to be openable and closable, a movable wheel 14 slidably attached to the center rod 10, and a proximal end portion of the movable wheel 14 radiating from the movable wheel 14. It has a plurality of receiving bones 15 that are connected to each other in a tiltable manner and whose tip part is connected to the parent bone 13 in a freely tiltable manner.

  The master bone 13 includes a proximal bone portion 13 a and a distal tip bone portion 13 b connected to the proximal bone portion 13 a via a parent dowel 16. At the position of the parent dowel 16. As shown by a chain line, it can be bent, and the tip of the receiving bone 15 is connected to an intermediate portion of the base bone portion 13a through a small dowel 17 so as to be able to be tilted up and down.

  The umbrella cloth 2 is formed of a transparent synthetic resin film, and as shown in FIG. 2, a plurality of booth pieces 18 having a substantially triangular shape are sequentially arranged adjacent to each other in the width direction. As shown, the side ends 18a of the adjacent booth pieces 18 are joined together in a state where they are raised. The joint portion 19 formed thereby extends radially from the top portion 2 a of the umbrella cloth 2 and reaches the peripheral edge portion 2 b of the umbrella cloth 2. The member to which the code | symbol 20 was attached | subjected in the figure is an edge cloth for reinforcement attached along the peripheral part 2b of the said umbrella cloth 2. As shown in FIG.

  The umbrella cloth 2 is placed on the master bone 13 in such an arrangement that the joint portion 19 extends along the master bone 13, and the top portion 2 a is attached to the upper end of the intermediate rod 10. While being sandwiched between the stone claw 21 and the fixed wheel 12, the peripheral edge 2 b fits the cap member 22 attached to the tip (lower end) of the joint 19 to the tip (dew) of the main bone 13. The umbrella bone 1 is stretched by being locked to the parent bone 13 together. However, instead of providing the cap member 22, the tip of the joint portion 19 of the umbrella cloth 2 may be bound to the main bone 13 with a thread.

Further, the middle portion of the joint portion 19 is fixed to the parent dowel 16 of the main bone 13 with a string-like fixing member 23 so that the umbrella fabric 2 is not displaced with respect to the main bone 13 when the umbrella is folded. Has been. The joint portion 19 may be fixed to the parent bone 13 at a portion other than the parent dowel 16.
Since the umbrella cloth 2 is stretched around the umbrella bone 1 in this way, the booth piece 18 is located between the adjacent main bones 13.

  In addition, as a method of joining the booth pieces 18, it is preferable to use a method of welding the side end portions 18 a of the booth pieces 18 by high frequency dielectric heating using a high frequency welder. However, other methods, for example, heat welding in which the booth piece 18 is heated and welded from the outside by the heat of the heater, ultrasonic welding in which ultrasonic vibration and pressure are applied and the booth piece 18 is welded by frictional heat, etc. This method can also be used.

  The umbrella cloth 2 is formed with a fold guide 24 for assisting the formation of the fold at the position of the fold formed when the umbrella cloth 2 is folded. As is clear from FIGS. 4 and 5, the fold guide 24 is formed by crease lines 25 and 26 that are recessed in a groove shape, and a plurality of crease lines 25 and 26 are formed between each other. They are formed so as to be linear and parallel to each other with a distance D smaller than the width W of the eye line. In the illustrated example, the number of crease lines 25 and 26 is three.

  Of the fold lines 25 and 26, one fold line 25 is a vertical fold line that extends from the top 2a of the umbrella cloth 2 to the peripheral edge 2b at the center of the boot piece 18 in the width direction, The crease line 26 extends from the middle part of the vertical crease line 25 toward the side end of the boot piece 18 in the horizontal direction (diagonally upward). It is a crease line.

  As can be seen from FIG. 6, the fold lines 25 and 26 are formed by thinning and densifying a part of the umbrella cloth 2 (booth piece 18) made of a synthetic resin film. The formation can be performed by high frequency dielectric heating using a high frequency welder. That is, as shown in FIG. 7, a state in which the mold 27 is pressed onto the booth piece 18 placed on the receiving mold 28 using the mold 27 also serving as an electrode having a plurality of protrusions 27 a. Then, a high frequency electromagnetic wave is applied to the mold 27, and the boot piece 18 is pressed while being dielectrically heated, so that the crease line 25 is applied to a portion pressed by the protrusion 27a of the mold 27. , 26 are formed. Accordingly, in the portion where the fold lines 25 and 26 are formed, only one side of the umbrella cloth 2 is recessed in a concave shape. This recess may be directed to the outer surface side or the inner surface side of the umbrella cloth 2, but is directed to the inner surface side in the illustrated example.

  When such fold lines 25 and 26 are formed in the umbrella cloth 2, the fold lines 25 and 26 are thinned and densified at the portions of the fold lines 25 and 26, and have a concave groove shape. Since the properties are different from the portions where the eye lines 25, 26 are not formed, the umbrella cloth 2 is easily bent along the fold lines 25, 26 when the umbrella is folded. It does not bend into an irregular saddle like a traditional umbrella cloth. The crease lines 25 and 26 also serve as a guide for the position where the crease is formed. For this reason, the umbrella can be easily folded by folding the umbrella cloth 2 while making a crease along the crease lines 25 and 26.

  In this case, the fold is not necessarily formed on any of the plurality of fold lines 25, 26, but between the adjacent fold lines 25, 26 and the fold lines 25, 26. In some cases, the crease line is formed in a portion where the crease line is not formed, or outside the region where the crease lines 25 and 26 are formed along the region. However, it is difficult to form a fold in such a direction as to cross the fold lines 25 and 26.

  In addition, the umbrella cloth 2 of the embodiment is formed by a film having a three-layer structure in which an ethylene vinyl acetate film (EVA) is sandwiched between polyethylene films (PE), and the thickness T is 0.1 mm. It is. In this case, the fold lines 25 and 26 preferably have a depth H of about 0.01-0.04 mm and a width W of about 1-2 mm. However, the present invention is not limited to this, and the material of the umbrella cloth 2 may be other than the above, and the depth H and the width W of the fold lines 25 and 26 are also the same as those of the umbrella cloth 2. It is appropriately changed according to the material, thickness, number of crease lines, and the like.

  An air opening 30 that can be freely opened and closed is formed in a part of the joint portion 19 in the umbrella cloth 2. This ventilation port 30 is for relieving the wind pressure acting on the umbrella in a strong wind, and is opened when the outward air flow A is directed from the inner side 31a to the outer side 31b of the umbrella, so that the outward air flow A does not act. Sometimes formed to close. The specific configuration is as follows.

  That is, as shown in FIG. 5 and FIG. 8 to FIG. 10, the side end portion 18 a of the adjacent booth piece 18, 18 is part of the portion where the joint portion 19 extends along the base bone portion 13 a of the main bone 13. , 18a are not joined to each other, and a non-joining part 32 is formed, and the vent hole 30 is formed in the non-joining part 32. In the non-joining portion 32, the non-joining ends 18b and 18b of the adjacent booth pieces 18 and 18 project toward the outer side 31b of the umbrella in a state of being opposed to each other, thereby forming a check valve. When the outward air flow A acts on the ventilation opening 30 from the inner side 31a of the umbrella, the non-joining ends 18b and 18b are separated from each other and the ventilation opening 30 is opened, and the outward air flow is applied to the ventilation opening 30. When A does not act, the non-joining ends 18b, 18b come into contact with each other and the vent hole 30 is closed. When the air vent 30 is open, the inflow of rain from the air vent 30 is prevented by the action of the air flow A from the inner side 31a to the outer side 31b of the umbrella.

  When folding the folding umbrella having the above-described configuration, as shown in FIG. 3, the umbrella is closed and the main bone 13 is folded back like a chain line, and then, as shown in FIG. Fold along lines 25 and 26 and fold by making a crease. At this time, the umbrella cloth 2 is easy to bend along the crease lines 25 and 26, and the fold lines 25 and 26 serve as a guide for the crease position. Is folded along the fold lines 25 and 26, a fold can be easily and accurately formed at a predetermined position, and the umbrella can be easily folded. As shown in FIG. 11, the folded umbrella is bundled in a round shape and stopped by a band 33.

  In the illustrated embodiment, as shown in FIG. 4, the vertical crease line 25 is formed continuously over the entire length of the booth piece 18 in the vertical direction, but as shown in FIGS. The longitudinal fold line 25 may be divided into an upper line 25a and a lower line 25b by providing a cut 34 at an intermediate portion intersecting with the fold line 26. By providing such a cut 34, when the umbrella cloth 2 is folded as shown in FIG. 7, a fold along the upper line 25a and the lower line 25b, and a fold along the left and right horizontal fold lines 26, Can be formed in a sharp shape, and can be folded flatly. As a result, when the folded umbrella is bundled with the band 33 as shown in FIG. 11, the winding diameter is reduced. Can do.

  In the case of providing the cut line 34, the upper line 25a and the lower line 25b may be located on the same line as each other, but may be arranged with a ½ pitch shift left and right. In this case, in order to maintain the left-right balance, the number of lower lines 25b may be increased by one as shown in FIG. 12, or conversely, the number of upper lines 25a may be increased by one.

  In the embodiment shown in FIGS. 4 and 5, three fold lines 25 and 26 are formed. However, the number of fold lines 25 and 26 is less than three. There may be more than books. For example, even if there are one or two or four or more, the function of assisting the formation of the fold can be sufficiently exhibited.

  FIG. 14 shows a part of a long umbrella which is a second embodiment of the umbrella according to the present invention. The long umbrella includes an openable / closable umbrella bone 5 and an umbrella cloth 6 stretched around the umbrella bone 5. And is formed.

  The umbrella bone 5 differs from the umbrella bone 1 of the folding umbrella shown in FIG. 3 only in that the main bone 13 is not bendable and 16 pieces are provided. The same. For this reason, the detailed illustration is omitted.

  The umbrella cloth 6 is formed by sequentially joining a plurality of (eight) booth pieces 18 made of a synthetic resin film. The booth piece 18 has a size twice as large as that of a normal booth piece 18a used when the number of umbrella bones is 16 (two pieces), and the distal end portion of the joint portion 19 of the adjacent booth pieces 18 is used. At the intermediate position of the peripheral edge of each booth piece 18, a fastening part 18 c for fastening to the tip of the main bone 13 is formed. The fixing portion 18c may be formed of a cap member 22 as shown in FIG. 1, but may be formed so as to be directly bonded to the tip with a thread.

  The umbrella cloth 6 is positioned on the odd-numbered master bones 13-1, 13-3,... 13-15 when the joint portion 19 counts the master bones in the counterclockwise direction in order. Are attached to a plurality of places with a thread or the like, and the intermediate portion of each booth piece 18 is positioned on the even-numbered main bones 13-2 and 13-16, except for the peripheral fastening portion 18c. It is stretched on the parent bone 13 in an arrangement that is not bound to the even-numbered parent bone.

  At the position along the even-numbered main bones 13-2... 13-16 in the middle part of the booth piece 18, the booth 18 is formed along the main bones 13-2. A fold guide 24 for assisting the formation of the fold is provided. Similar to the fold guide 24 formed on the umbrella cloth 2 of the first embodiment, the fold guide 24 is formed by one or a plurality of fold lines 24a recessed in a groove shape. In the part of the eye line 24a, the umbrella cloth 6 is thinned and densified compared to the part in which the crease line 24a is not formed. The groove of the fold line 24a may be directed to the inside or the outside of the long umbrella.

Since the umbrella cloth 6 is formed in this way, when the long umbrella is closed, even if the middle part of each booth piece 18 is not bound to the even-numbered master bones 13-2, 13-16, It is easy to bend along the crease line 24a. For this reason, the umbrella cloth 6 may be bent in an irregular saddle shape away from the main bone at the position of the main bone 13-2, 13-16. Instead, the fold line 24a is easily and accurately folded at a position along the parent bone 13-2...
On the other hand, the joint portion 19 of the booth piece is bound to the odd-numbered master bones 13-1, 13-3,. Will be forced to bend.

  In addition, it is desirable to form the ventilation opening 30 which is formed in the folding umbrella of 1st Embodiment also in the long umbrella of this 2nd Embodiment.

DESCRIPTION OF SYMBOLS 1,5 Umbrella 2,6 Umbrella cloth 10 Middle stick 11 Hand 13 Parent bone 18 Booth piece 19 Joint part 24 Fold guide 24a Fold line 25 Vertical fold line 25a Upper line 25b Lower line 26 Horizontal fold line 30 Ventilation opening 34 Cut W Width D Spacing A Outward airflow

Claims (7)

Openable and foldable umbrella bone, and umbrella cloth stretched around the umbrella bone,
The umbrella bone has a middle rod whose hand is attached to the lower end, and a plurality of foldable master bones radially connected to the middle rod,
The umbrella cloth is formed by joining a plurality of triangular booth pieces made of a synthetic resin film, and the joint portions of the adjacent booth pieces are stretched on the master bone so as to be along the master bone. And a fold guide for assisting the formation of the fold at the position of the fold formed when the umbrella cloth is folded,
The crease guide is formed by a crease line that is recessed in a groove shape, and a plurality of crease lines extending vertically from the top side of the umbrella cloth toward the peripheral edge at the center position in the width direction of the booth piece When, and have a plurality of folds lines extending laterally toward the side end portion of the booth piece from an intermediate portion of the vertical fold line,
In the fold guide, the plurality of crease lines are formed in parallel to each other with an interval narrower than the width of the crease lines.
An umbrella in which an umbrella cloth is formed of a synthetic resin film.   2. The umbrella according to claim 1, wherein the fold line is thinned and densified compared to a portion where the fold line is not formed. The vertical fold line is divided into an upper line located above an intermediate portion intersecting with the horizontal fold line, and a lower line located below the intermediate portion. These upper line and lower line are The umbrella according to claim 1 or 2 , wherein the umbrellas are discontinuous with each other by a cut formed in the intermediate portion. 4. The umbrella according to claim 3, wherein the positions of the upper line and the lower line of the vertical fold line are shifted from each other by 1/2 pitch. The umbrella cloth has a vent opening that can be freely opened and closed at a part of the joint. The vent opening is opened when an outward air flow is directed from the inside to the outside of the umbrella. The umbrella according to any one of claims 1 to 4 , wherein the umbrella is formed so as to close when not in operation. It consists of an umbrella bone that can be freely opened and closed, and an umbrella cloth stretched around the umbrella bone.
The umbrella bone has a middle rod with a hand attached to the lower end, and a plurality of master bones radially connected to the middle rod,
The umbrella cloth is formed by sequentially joining a plurality of booth pieces made of a synthetic resin film, the number of booth pieces being half the number of the parent bones, and the umbrella cloth is an adjacent booth piece Is positioned on the odd-numbered master bone and attached to the odd-numbered master bone, and the intermediate part of the booth piece is positioned on the even-numbered master bone and is not attached to the even-numbered master bone. It is stretched on the main bone in the arrangement
A fold guide for assisting formation of a fold along the main bone when the umbrella is closed is provided at a position along the even-numbered main bone in the middle part of the booth piece, Formed by a plurality of crease lines recessed in a shape,
The plurality of crease lines are formed in parallel to each other while maintaining an interval narrower than the width of the crease lines.
An umbrella in which an umbrella cloth is formed of a synthetic resin film. The umbrella according to claim 6 , wherein the fold line is thinned and densified compared to a portion where the fold line is not formed.

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