JP2001340117A - Expandable umbrella - Google Patents

Abstract

PROBLEM TO BE SOLVED: To impart a variety to design in the use state of an umbrella by making the form of the edge side portions of the umbrella in a developed state changeable and variable. SOLUTION: The upper part of a metal rod 2 is provided with ribs 5 to hold covering cloth 3. The ribs 5 have four straight parts 36 radially projecting from the upper part of the metal rod 2 and curving parts 37 for interconnecting the front ends of the straight parts 36 and 36 adjacent to each other. The curving parts 37 are formed by turnably connecting the front end connecting parts 45 and 46 of first and second curving pieces 40 and 41 to each other turnably in opposite directions and can be developed to project upward by their spring characteristics. One end 57 of a manipulating cord 56 is connected to an each other's connecting segment 55 of the front end connecting parts and the manipulating cord 56 is pulled in a manner as to move this one end 57 toward the metal rod 2 side, by which the first and second curving pieces 40 and 41 are elastically rolled in and deformed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an enlargement / reduction system in which the shape of an edge portion of an umbrella in a deployed state can be changed as required, and the design of the umbrella in use can be changed to enjoy a fashion. More particularly, the present invention relates to an expanding / contracting umbrella that is made compact and foldable into a flat plate shape and is configured to be portable.

[0002]

2. Description of the Related Art In a conventional folding umbrella, a large number of substantially straight umbrella bones are provided on an upper part of a shaft handle so as to radially protrude outward, and a proximal end portion of each umbrella bone is provided. Is provided on the upper part of the shaft handle so as to be rotatable in the vertical direction, and the radially opened umbrella bone is covered with a covering cloth. Also, in the shaft handle,
A movable wheel that can move in the up-down direction is provided, the movable wheel and an intermediate required portion of the umbrella are connected by a support bone, and the movable wheel is moved in a lower end direction of a shaft handle, thereby supporting each support bone. The umbrella bone is configured to be foldable.

However, in the case of the conventional folding umbrella, when the umbrella is opened, the tip of the umbrella bone projecting radially is in an outwardly projecting state. In particular, in the case of children, the danger is high when they play with an umbrella. For this reason, some umbrellas for children deal with the problem by attaching a spherical object to the tip of the umbrella bone, but with this configuration, when the umbrella is closed, a relatively large spherical object There was a problem that many pieces gathered in one place and became bulky.

Further, the conventional folding umbrella has a reduced shaft handle,
In addition, when the umbrella and the covering cloth were folded, the umbrella had a large round shaft shape with a diameter of about 5 to 6 cm. When such a bulky umbrella is to be further accommodated in a bag containing documents and the like in the folded state, the bag is often forcibly deformed or the documents are damaged.

In view of the design of the umbrella, the design effect has been changed by applying various patterns to the surface of the coated cloth. However, the morphological change of the umbrella itself is completely considered. As a result, it was not possible to change the design (form) of the umbrella to suit the mood of the day and enjoy fashion.

Incidentally, in order to solve the problem of danger caused by the protruding tip of the umbrella bone and the problem of bulkiness when the umbrella is folded, for example, Japanese Utility Model Application Laid-Open No. 59-79.
No. 014 and Japanese Utility Model Laid-Open Publication No. 2-36317 disclose a folding umbrella.

In each of these folding umbrellas, a bendable spring wire is bent in an annular shape to form an annular body, a covering cloth is stretched over the annular body, and a peripheral portion of the covering cloth is attached to the annular body. On the other hand, a central portion of the covering cloth is supported from below by the upper end of the shaft handle, and a required portion of the ring body and a hook portion provided on the shaft handle are connected by a tension string. . When the umbrella is folded, the ring is twisted in an eight-shape or the like, and folded in two or three.

In the case of such a folding umbrella, since the peripheral portion of the umbrella has a circular shape, unlike a conventional umbrella having an umbrella bone protruding radially, danger to the surroundings can be prevented and twisting can be performed. By doing so, there is an advantage that it can be folded into a flat plate.

However, in the case of the folding umbrella having such a structure, the central portion is supported by the upper end of the shaft handle, the peripheral portion of the covering cloth is supported by the ring, and the ring and the shaft handle are connected by the tension cord. It was just done, like a traditional umbrella,
It was not a configuration in which the covering cloth was stably supported by the radial umbrella bone. Therefore, the support of the coated cloth is unstable,
It was difficult to say that the intermediate portion of the covering cloth had the necessary strength as an umbrella, for example, it was loosened by rain, and the ring body was wobble even with a slight wind. Also, when folding the umbrella, it is necessary to form a plurality of small circles by grasping the opposite side of the ring body by hand and twisting it in an eight-shape, and further folding and overlapping the small circles. Was not always easy due to the spring properties of the ring. In addition, when twisting, not only the discomfort that the hands get wet with rainwater, but also the clothes get wet, and the folding operation of the umbrella cannot be performed lightly. Further, the umbrella in the deployed state is a simple form limited to a circle in a plan view, and there is no configuration in which the design (form) of the umbrella can be changed according to daily moods to enjoy the fashion. . In addition, even if the umbrella with a large diameter is twisted and folded, at most 1/2 to 1/3 of the diameter of the developed umbrella
It could only fold relatively large, but could not fold much smaller. In this case, there is a problem that the umbrella is too large to be stored in a bag in a folded state. In addition, when the folded umbrella is opened, the umbrella is spread at once by the spring action of the ring by releasing the hand, and thus lacks safety, and the umbrella may be damaged by the impact at that time.

[0010]

SUMMARY OF THE INVENTION The present invention has been developed in view of the above-mentioned conventional problems, and can enhance the safety in the use state of the umbrella and enjoy the fashion by changing the form of the umbrella. An object of the present invention is to provide an expandable / contractible umbrella that can be easily folded, can be easily folded in a plate shape, and is portable.

[0011]

In order to solve the above-mentioned problems, the present invention employs the following means. That is, the expandable / contractible umbrella according to the present invention is provided with an umbrella bone holding a covering cloth on an upper part of a shaft handle, and the umbrella bone has three or more radially projecting outward from an upper part of the shaft handle. It has a straight portion and a curved portion connecting the tips of the adjacent straight portions, and the curved portion is configured to protrude outward by its spring property, and is operated at a required portion of the curved portion. One end of the member is connected, and the bending portion can be elastically deformed by moving the operation member so that the one end moves to the shaft handle side, so that a predetermined deformation state can be fixed. It can be used as an umbrella in this fixed deformed state.

In a more preferred embodiment of the expanding / contracting umbrella according to the present invention, an umbrella bone for holding a covering cloth is provided on an upper part of the shaft handle, and the umbrella bone is radiated outward from the upper part of the shaft handle. It has three or more protruding linear portions and a curved portion connecting the tips of adjacent linear portions to each other, and the curved portion is configured to protrude outward by its spring property. The part is divided into two parts, a first curved piece and a second curved piece,
The distal end connecting portions of the two curved pieces are rotatably connected in opposite directions, and one end of the operating member is connected to the connecting portion of the distal end connecting portions, and the one end moves toward the shaft handle. By moving the operating member, the connecting portions are pulled toward the shaft handle while the two connecting portions are rotated in opposite directions, and the first curved piece and the second curved piece are moved. Can be elastically entangled and deformed, and a predetermined entangled deformation state can be fixed, and can be used as an umbrella in this fixed and deformed state.

In another preferred embodiment of the expandable / contractible umbrella according to the present invention, an umbrella bone for holding a covering cloth is provided on an upper part of the shaft handle, and the umbrella bone extends outward from the upper part of the shaft handle. It comprises three or more linear portions projecting radially, and a curved portion connecting the tips of the adjacent linear portions to each other, and the curved portion is configured to protrude outward by its spring property. When viewed in its unfolded state, the curved portion is substantially separated at a central portion and includes a first curved piece and a second curved piece, and the distal end connecting portions of the two curved pieces rotate in opposite directions to each other. One end of the operating member is connected to the connecting portion of the tip connecting portions,
By moving the operating member so that the one end moves to the shaft handle side, the connecting portion is drawn to the shaft handle side while the two distal end connecting portions rotate in opposite directions to each other, and The first curved piece and the second curved piece can be elastically entangled and deformed to fix a predetermined entangled deformation state, and can be used as an umbrella in this fixed and deformed state.

In each of the expandable and contractible umbrellas, the base end of the linear portion is pivotally attached to a fixed wheel provided on the upper part of the shaft so as to be rotatable in a vertical direction. A movable wheel is provided so as to be movable in the length direction, and the linear portion and the movable wheel are connected by a support bone, and the inclination angle of the linear portion can be changed by moving the movable wheel up and down. Good.

[0015] A more specific first example of the expanding / contracting umbrella according to the present invention.
In the aspect of the present invention, an umbrella bone holding a covering cloth is provided on an upper part of a shaft handle, and the umbrella bone has four or more protruding radially outward with a base end pivotally attached to the upper part of the shaft handle. An even number of straight parts,
A curved portion that connects the tips of the adjacent linear portions to each other, and the curved portion is configured to protrude outwardly by its spring property. When viewed in its deployed state, the curved portion is separated at a substantially central portion and includes a first curved piece and a second curved piece, and the distal end connecting portions of the two curved pieces form the curved portion. Are connected to each other so as to be rotatable in opposite directions about an axis substantially perpendicular to the plane to be connected, and one end of an operating member is connected to a connecting portion of the tip connecting portions, and the one end moves to the shaft handle side. By moving the operating member as described above, the connecting portion is pulled toward the shaft handle while the two end connecting portions rotate in opposite directions to each other, whereby the first curved piece and the second The curved piece is elastically entangled and deformed in a plane formed by the curved portion, and the first curved piece approaches the linear portion connected to the second curved piece, and the second curved piece is the second curved piece. 1 approaching the linear portion connected to the curved piece, and finally Expanded portion Cormorants a linear portion and said curved portion is formed is made as to form a flat body. A required portion of the linear portion;
A movable wheel that can move up and down along the shaft handle is connected by a support bone, and by moving the movable wheel up and down, the inclination angle of the linear portion can be changed, and the even number of support bones is It has a configuration in which long supporting bones having a long length and short supporting bones having a short length are alternately arranged, and the movable supporting wheel is lowered so that the short supporting bone is substantially in line with the shaft handle. When the long supporting bone is in a state of being inclined away from the shaft handle so that the upper end thereof is located more outward than the lower end, and the folded flat plate-shaped body as a whole is It is characterized in that it is configured to be able to substantially overlap.

A more specific second embodiment of the expanding / contracting umbrella according to the present invention
In the aspect, an umbrella bone holding a covering cloth is provided on an upper part of a shaft handle, and the odd number of umbrella bones whose base ends are pivotally attached to the upper part of the shaft handle and project radially outward. It has a linear portion and a curved portion connecting the tips of the adjacent linear portions to each other, and the curved portion is configured to protrude outwardly by its spring property. When viewed in the unfolded state, the bending portion includes a first bending piece and a second bending piece that are separated from each other at a substantially central portion, and one of the bending portions includes a distal end of each of the bending pieces. The connecting portions are rotatably connected in opposite directions about an axis inclined with respect to a plane formed by the curved portion, and one end of an operating member is connected to a connecting portion between the distal end connecting portions. By moving the operating member so that one end moves to the shaft handle side, the connecting portion is drawn to the shaft handle side while the both end connecting portions rotate in opposite directions to each other,
Thereby, the surface formed by each bent portion of the first curved piece and the second curved piece is inclined inward and downward with respect to the plane formed by the curved portion, so that the adjacent portions are adjacent to each other. A valley shape having a concave central portion is formed between the linear portions, and the valley-shaped portion can be elastically bent as a bending line, and the portion formed by this bending is a two-fold flat plate-like body. It is made to exhibit. On the other hand, the other curved portions are connected so that the distal end connecting portions of the two curved pieces can be rotated in opposite directions about an axis substantially perpendicular to the plane formed by the curved portions, and are connected to each other. One end of the operating member is connected to the connecting portion of, by operating the operating member to move the one end to the shaft handle side,
The connecting portion is drawn toward the shaft handle while the tip connecting portions rotate in directions opposite to each other, whereby the first curved piece and the second curved piece are resilient in a plane formed by the curved portion. Bent, the first curved piece approaches the linear portion connected to the second curved piece, and the second curved piece approaches the linear portion connected to the first curved piece, Finally, the developed portion formed by the adjacent linear portion and the curved portion forms a flat plate. In addition, a required portion of the linear portion and a movable wheel that can move up and down along the shaft handle are connected by a supporting bone, and the inclination angle of the linear portion can be changed by moving the movable wheel up and down. The odd-numbered supporting bones are configured such that the supporting bones connected to the two linear portions connected to both ends of one of the curved portions are long supporting bones having a long length, and the other supporting portions of the other curved portions are formed. When looking at all the supporting bones connected to both linear portions connected to both ends, it has a configuration in which there is a short supporting bone with a short length between the long supporting bones with a long length, When the movable wheel is lowered so that the short supporting bone is substantially along the shaft, the long supporting bone is inclined so that the upper end thereof is located outside the lower end and separates from the shaft. And the folded flat plate and the two-fold flat Shaped body is characterized in that in its entirety is configured so as overlap substantially.

In the specific first aspect, the folded flat plate-like body may have a lower end portion (a base end portion) of a required one of the supporting bones and the supporting bone so that the whole may substantially overlap each other. The base end of the linear portion connected to the shaft handle may be rotatable around the axis of the shaft handle.

In the specific first aspect, the folded flat plate and the two-folded flat plate may have a lower end (a base end) of a required one of the supporting bones so that the whole can substantially overlap each other. Part) and the base end of the linear part connected to the supporting bone are preferably rotatable around the axis of the shaft handle.

In each of the expandable and contractable umbrellas whose bending portion can be elastically deformed, the operation of moving the operating member performed to deform the bending portion as required requires that the linear portion protrude radially outwardly. It is preferable that the apparatus be configured so that it can be performed in a state where the angle of the linear portion is changed obliquely, in addition to the state where is opened.

In each of the expandable and contractible umbrellas, when the umbrella bone is deployed, the linear portion has an inclined state in which the distal end is located slightly lower than the proximal end, and the adjacent linear portion and the distal end It is preferable that an umbrella surface formed by a set of unfolded portions formed by the curved portions connecting each other forms a pyramid shape.

In the case where a movable wheel is provided on the shaft handle and the shaft handle is extendable, all of the operating members connected to all the curved portions are capable of extending and retracting the shaft handle and / or the shaft handle. It is preferable to be able to perform a moving operation in conjunction with a moving operation of a movable potter's wheel which can move up and down along.

When a movable potter's wheel is provided on the shaft handle, the shaft handle can be extended and contracted by inserting a pipe-shaped upper shaft handle into a pipe-shaped lower shaft handle. An operating member in the form of a string, which is provided with a vertically extending guide groove, and one end of which is connected to a required portion of the curved portion, is guided by a guide portion provided above the shaft handle. Is guided by a guide portion provided on a movable potter's wheel movably provided in the longitudinal direction, and thereafter, is introduced into the upper shaft handle and extended downward, and is folded upward at the lower end side of the guide groove. And the other end of the operating member is fixed to the lower shaft handle and the lower shaft handle is moved upward, whereby the operating member is By moving the one end toward the shaft handle, the curved portion can be deformed, and the lower shaft handle is moved upward. After moving to the required countercurrent, by the movable runner is lowered, while changing the inclination angle of the straight portion, it is preferable to configure the end so as closer to the shaft handle side.

[0023]

Embodiments of the present invention will be described below with reference to the drawings. [First Embodiment] In FIGS. 1 and 2, an expandable / contractible umbrella 1 according to the present invention is provided with an umbrella bone 5 for holding a covering cloth 3 on an upper part of a shaft handle 2, and the umbrella bone 5 is in an expanded state. As a result, the umbrella surface is formed in a quadrangular pyramid shape, and the umbrella body 6 having excellent strength can be formed. It is designed to be compactly foldable.

The shaft handle 2 is, as shown in FIGS.
The upper shaft handle 7 formed in a pipe shape can be closely inserted into the lower shaft handle 9 having a larger diameter than that of the lower shaft handle 9, and the upper shaft handle 7 is pulled out from the lower shaft handle 9, whereby the entire length of the shaft handle 2 is obtained. 5, the upper shaft handle 7 can be inserted into the lower shaft handle 9 and the upper end 10 of the lower shaft handle 9 can be set in the guide groove 2 to be described later, as shown in FIG.
The shaft handle 2 can be shortened by contacting the stopper piece 12 provided on the upper end side of the shaft 9. And shaft handle 2
4 and 6, the lower engagement piece 13 built in the lower end side of the upper shaft handle 7 so as to be elastically protrudable and retractable, as shown in FIGS. While engaging with the upper notch 16 of the said lower shaft handle, FIG.
As shown in FIG. 7, the lower end 20 of the engaging claw piece 19 having the upper end 17 fixed to the lower shaft handle 9 and projecting obliquely downward is formed by the engaging recess 18 provided at the lower end portion of a guide groove 29 described later. The extended state of the shaft handle 2 is fixed by engaging with the lower end 21.

As shown in FIGS. 5 and 8 to 10, the shaft handle 2 is provided with a cylindrical movable wheel 22 through which the shaft handle 2 can be inserted so as to be vertically movable. 22
Is set such that the large-diameter lower shaft handle 9 can be inserted therethrough. At the upper end of the upper shaft handle 7, FIG.
As shown in FIGS. 10 to 10, the upper engagement piece 23 which can
Are provided, and at the upper end 25 of the protruding engagement piece,
The lower end 26 of the movable wheel 22 is supported from below, whereby the position of the movable wheel 22 with respect to the upper shaft handle 7 is fixed. The lower edge of the upper engaging piece 23 is formed as an inclined edge 27 which is inclined outwardly toward the upper side, and the upper end 17 presses the inclined edge 27 as the lower shaft handle 9 is raised. As a result, the upper engagement piece 23 is moved in the immersion direction indicated by the arrow in FIG. 11, and the upper end 25 of the upper engagement piece 23 is disengaged from the lower end 26 of the movable wheel 22 by required immersion. As shown by a dashed line in FIG.
Can be moved downward.

As shown in FIGS. 2, 4 and 8 to 9, the outer peripheral surface of the upper shaft handle 7 is orthogonal to the direction in which the upper engaging piece 23 and the lower engaging piece 13 appear and disappear in plan view. A guide groove 29 is provided from the lower end of the upper shaft handle 7 to the vicinity of the portion where the upper engagement piece 23 is provided, and is continuous in a concave shape in a cross-section of an arc.

At the lower end of the lower shaft handle 9, as shown in FIG. 13, an engagement opening 31 which can engage with an engagement small projection 30 provided at the tip of the lower engagement piece 13 in the protruding direction. Are provided in, for example, upper and lower two stages, and the engagement small protrusion 30 is engaged with a required one of the engagement opening 31 so that the length of the shaft handle 2 is fixed in a required reduced state. It has been made to be. This engagement state is caused by the vertical movement of the lower shaft handle 9 as shown in FIG.
When the lower engagement piece 13 is pushed, the lower engagement piece 13 is immersed and released.

In the present embodiment, as shown in FIGS. 2 and 15 to 17, the umbrella bone 5 is rotatable in the vertical direction on a fixed wheel 33 provided on the upper part of the shaft handle 2. 35
Are linearly connected to each other and project radially outward at substantially equal angular pitches, and four linear portions 36, 36, 36, 36, and curved portions connecting the tips 34, 34 of the adjacent linear portions 36a, 36b. A part 37 is provided. The bending portion 37 is made of a wire having a strong elastic restoring force, for example, a metal wire such as a spring steel or a piano wire, a shape memory resin, glass fiber, or the like. In order to increase the height of the linear portion 36, the linear portion 36 is configured to have a rectangular shape which is long in the vertical direction as shown in FIGS.
a, 36b are connected to the tips 34, 34 in an arc shape.

As shown in FIGS. 18 to 20, the bending portion 37 is separated substantially at the center when viewed in the expanded state, and is separated from the first bending piece 40 on the right side and the second bending piece 41 on the left side. Consists of The distal ends of both curved pieces 40, 41 are formed as distal end connecting portions 45, 46 in which bearing holes 42, 43 are formed by being wound inward. When connecting the two distal end connecting portions 45 and 46 to each other, an operation piece 47 as shown in FIG. 19 is interposed between the two, and the operation piece 47 has an insertion hole 49 and a mounting hole 50 at both ends thereof. Have. However, in order to connect the two distal end connecting portions 45 and 46 to each other, the distal end connecting portions 45 and 46 are vertically stacked with the operation piece 47 interposed therebetween, and the upper and lower bearing holes 4 are aligned.
The pivot 51 is inserted through the insertion holes 49, 43 and the insertion hole 49, and the upper and lower ends of the pivot are crushed to form retaining portions 52, 52. As a result, the two end connecting portions 45 and 46 are mutually connected as shown in FIG.
As shown in the figure, the rotation portions are rotatable in opposite directions about an axis L1 substantially orthogonal to the plane 53 formed by the curved portion 37. A mounting hole 50 of the operation piece 47, which forms a connection portion 55 between the two end connection portions 45 and 46, is provided.
As shown in FIG. 19, one end 57 of a string-shaped operation member (hereinafter, also referred to as an operation string) 56 made of, for example, a fishing line or the like is connected, and the operation string 56 is pulled (moved). By moving the one end 57 toward the shaft handle 2, the distal end connecting portions 45 and 46 rotate in opposite directions to each other as shown in FIGS.
5 is drawn to the shaft handle 2 side. The first curved piece 40
Since the tip connecting portions 45 and 46 of the second curved piece 41 and the second curved piece 41 are connected to each other while being positioned vertically, the two curved pieces 4
The entanglement deformations of 0 and 41 are performed without difficulty without interfering with each other.

Thus, the first curved piece 40 and the second curved piece 40
Of the curved surface 41 formed by the curved portion 37
As shown in FIG. 23, the first curved piece 40 approaches the linear portion 36b connected to the second curved piece 41 while elastically wrapping and deforming in the inside 3. The curved piece 41 approaches the linear portion 36a connected to the first curved piece 40. In the final state shown in FIG. 23 in which the connecting portion 55 is close to the shaft handle 2, the developed panel-like portion 59 formed by the adjacent linear portions 36a and 36b and the curved portion 37 is formed.
(FIG. 2), as shown in FIG. 23, to form a flat plate-shaped body 60 having a heart-shaped outer shape. This flat body 6
In the present embodiment, 0 is formed in a state where the linear portions 36a and 36b are turned downward as shown in FIG. Then, when the external force is released, the curved portion 37 bent so as to form the flat plate-shaped body 60 can be protruded outwardly by its spring property as shown in FIG. 22 to 23, the covering cloth 3 is partially shown.

The linear portion 36 and the movable wheel 2
2 and 15 are connected by a supporting bone 61, and the connecting state of the connecting part 62 to the linear portion 36 and the connecting part 63 to the movable wheel 22 of the supporting bone 61 are movable. The pivoting state is such that the inclination angle of the linear portion 36 can be changed by the vertical movement of the wheel 22.

In the present embodiment, four support bones 6 are provided corresponding to the four linear portions 36, 36, 36, 36.
1, 61, 61, 61 are provided, and the arrangement of these support bones is such that long support bones 61a having a long length and short support bones 61b having a short length are alternately located. . The distal end 65 of the long supporting bone 61a is connected to a portion on the front side of the linear portion 36, and the distal end 67 of the short supporting bone 61b is connected to a substantially central portion of the linear portion 36. .

The relationship between the length of the long support bone 61a and the length of the short support bone 61b is, as shown in FIG.
When the short support bone 61b is lowered to be in a state substantially along the shaft handle 2 (may be slightly inclined), the long support bone 61a has its upper end 70 located outward of the lower end 71. Is set so as to be separated from the shaft handle 2 at an angle (for example, at an angle of about 60 degrees).

The flat body 6 folded as described above
3, the lower end 72 of the long support bone 61a and the base end 35 of the linear portion 36A connected to the long support bone 61a so that all of them can be substantially overlapped as shown in FIG.
8, 16 and 24, are connected to the fixed wheel 33 and the movable wheel 22 so as to be rotatable around the axis of the shaft handle 2. As shown in FIG.

The specific structure of the long support bone 61a is as follows.
The lower end portion (base end portion) 72 and the base end portion 35 of the linear portion 36A are inserted into mounting recesses 73 and 74 provided in the fixed wheel 33 and the movable wheel 22, and provided in the lower end portion 72. The connecting wires 77 and 79 in the circumferential direction are respectively inserted into the elongated hole-shaped connecting holes 75 and the connecting holes 76 provided in the base end portion 35, and the lower end portion 72 and the base end portion 35 are connected to each other. It is configured such that it can be rotated by a required angle in the circumferential direction by being guided by the wires 77 and 79.

The covering cloth 3 is formed of a material generally used for conventional umbrellas and parasols, which does not generate wrinkles and has a required water repellency and light-shielding property. Good. The covering cloth 3 is formed by joining together pieces of cloth having a size to cover between adjacent linear portions while ensuring waterproofness, and is formed as a single piece so as to cover the entire umbrella bone. It may be done. The covering cloth 3 is attached to each linear portion 36 and to a peripheral portion 80 (FIG. 2) of each curved portion 37.

The four curved portions 37, 37, 37, 3
7, the four operation strings 56, 56, 56, 56 connected to the respective operation pieces 47, 47, 47, 47 in the present embodiment are shown in FIGS. 7, the vertical movement of the lower shaft handle 9 and the movable wheel 22 by operating means 81 as shown in FIGS.
It is configured to be performed in conjunction with the vertical movement operation of.

The operating means 81 is shown in FIGS.
As shown in FIG. 17, a ring-shaped upper guide portion 83 is provided below the fixed wheel 33 and at a portion facing the connecting portion 55 of the curved portion 37 via a fixture 82, and the movable wheel is provided. A ring-shaped lower guide portion 86 is provided at the upper end of the lower portion 22 via an attachment 85 at a position below the guide portion 83. 5, 8, 17, and 2
As shown in FIG. 7, a guide member 89 is fixedly mounted in a hole 87 provided slightly above the upper engagement piece 23 of the upper shaft handle 7 and directly below the upper guide portion 83. Do it. As shown in FIGS. 27 and 28, the guide member 89 has a stopper flange 92 provided around the outer edge of a cylindrical portion 91 provided with a guide hole 90 through which the operation cord 56 is inserted. Both ends of the inner peripheral surface 93 of the guide hole 90 are formed as arc-shaped surfaces 95, 95 so as not to damage the moving operation cord 56.

The lower end of the upper shaft handle 7 is provided at the lower end of FIG.
26, a groove bottom 96 at the lower end of the guide groove 29.
A guide shaft 97 having an elliptical cross section is provided in the lateral direction. The guide shaft 97 has, for example, cutout recesses 99 on both sides of the lower end of the guide groove 29, and connects both end portions 102, 102 of the guide shaft 97 having a guide surface 100 having an arc shape to the cutout recesses. It is provided by fitting into 99 and 99 and fixing. The guide surface 100 projects slightly below the lower end 103 of the groove bottom 96.

As shown in FIGS. 4 and 17, the operation cord 56 is inserted through the ring-shaped upper guide portion 83 and the ring-shaped lower guide portion 86, and then, as shown in FIG. It is introduced into the upper shaft handle 7 through the guide hole 90, and thereafter, the introduced four operation cords 56, 56, 56, 5
6, the lower end portion 106 of the string-like material 105 is extended below the groove bottom of the lower shaft handle 9 at the lowest position as shown in FIG. It is fixed to a fastening hole 107 provided below the end 103. In this state, as shown in FIG. 2, the string-like object 105 is in a state where the elastic portion of the curved portion 37 is regulated to be constant and stretched. When the lower shaft handle 9 is slightly moved upward in this state, the string-like object 105 passes through a temporarily loosened state as shown in FIG. 29, and then, as shown in FIG. 25 and 30 are bent upward.
As shown in FIG. Then, as the lower shaft handle 9 moves upward, FIG.
As shown in (4), four of the operation cords 56 are pulled so as to move the connecting portion 55 to the shaft handle 2 side.

However, in the case of the umbrella 1 having the above-mentioned structure, the upper engaging handle 13 and the engaging member 13 are shown in FIGS. The shaft handle 2 is fixed in an extended state by the engagement action of the dovetail pieces 19. As shown in FIGS. 2 and 15, the movable bone wheels 22 are supported by the upper engaging pieces 23 in the protruding state, so that the support bones 61, 61, 61, 61 are connected to the linear portions 36, 36, 36, 36 are pushed up, and since the respective operation cords 56, 56, 56, 56 are in a returned state, the bending portion 37 is in a state of being protruded outward by its spring property. obtain. In this state, as shown in FIG. 2, each operation cord 56 is in a stretched state in which the elastic deployment of the curved portion 37 is regulated to a constant value. With the umbrella body 6 thus opened, it can be used in the same manner as a conventional umbrella.

In the state where the umbrella body 6 is thus opened, as shown in FIG. 2, the curved portion 37 is connected to the distal end 34 of the linear portion 36 in an arc shape, so that the distal end of the linear umbrella bone is As in a conventional umbrella projecting outward, danger that the tip of the umbrella bone hits the eyes of surrounding people can be prevented.

In the state where the umbrella body 6 is thus opened,
When the lower shaft handle 9 is moved upward, the string-like object 105 is guided by the arc-shaped guide surface 100 and bent upward as shown in FIGS. It will be pulled upward in 29. as a result,
As shown in FIG. 22, the connecting portions 55 of the four curved portions 37, 37, 37, and 37 are simultaneously drawn toward the ring-shaped upper guide portion 83, that is, the shaft handle 2 side. Thereby, the first bending piece 40 and the second bending piece 41
It is elastically entangled and deformed in the plane 53 formed by the curved portion 37. By setting the amount of upward movement of the lower shaft handle 9 as required, the two curved pieces 40,
The entanglement deformation state of 41 can be set as required, and the design (outer form) of the edge portion 109 (FIG. 1) of the umbrella body 6 can be changed according to the degree of the entanglement deformation. FIG. 31 shows an example of such a change, and this state is fixed by the engaging action between the small engaging projection 30 and the engaging opening 31 as shown in FIG.

When the lower shaft handle 9 is moved upward to a position where the upper end 17 contacts the inclined edge 27 of the upper engagement piece 23 as shown in FIG. The bending piece 40 and the second bending piece 41 are entangled and deformed to the state shown in FIG. Thereafter, when the lower shaft handle 9 is further moved upward, as shown in FIG. 12, the inclined edge 27 of the upper engagement piece 23 is pressed by the upper end 17 of the lower shaft handle 9, and the upper engagement piece 23 is moved. It is elastically immersed in the upper shaft handle 7,
The state of engagement between the upper engagement piece 23 and the movable wheel 22 is released. In this state, as shown in FIG. 5, the upper end 10 of the lower shaft handle 9 contacts the stopper piece 12, and the shaft handle 2 is in a contracted state. In this state, the movable wheel 22 is
As shown by a dashed line in FIG. Then, when the movable wheel 22 is moved downward along the lower shaft handle 9, the operation string 56 is guided by the ring-shaped lower guide portion 86. The connecting portion 55 is drawn toward the upper guide portion 83 by the double length. At the same time, since the connecting portion 63 at the lower end of the four supporting bones 61, 61, 61, 61 moves downward, the four linear portions 36, 36, 36,.
36 will be bent downward.

FIG. 23 shows the lowering state of the movable wheel 22. At this time, the connecting portion 55 is brought into a state of being close to the upper guide portion 83 and the first curved piece 4
0 is the linear portion 36 connected to the second curved piece 41.
b and the second curved piece 41 is in a state of being close to the linear portion 36a connected to the first curved piece 40, and the adjacent linear portions 36a and 36b and the curved portion 37
The unfolded panel-like portion 59 (FIG. 2) formed by the flat plate-shaped member 60 exhibits a flat plate-like body 60 having an outer heart shape, and the covering cloth 3 existing in the panel-shaped portion 59 is folded as shown in FIG. .

The two short supporting bones 61b, 61b
Are in a state substantially along the shaft handle 2 (may be slightly oblique) and the two long supporting bones 61a, 61
a is in a state in which the upper end 70 is inclined away from the lower end 71 and is separated from the shaft handle 2, and the two flat plate members 60 formed on both sides of the long support bone 61a. 6
0, 60, and 60 are substantially in an overlapping state.
Note that FIG. 23 shows only the front plate-shaped body 60 for convenience. Thereafter, the sets 110, 110 of the substantially overlapping plate-like bodies are forcibly further substantially overlapped by the rotation of the long support bone 61a and the linear portion 36A about the axis of the shaft handle 2. Figure 3
3. As shown in FIG. 3, four flat plates 60, 60, 6
A state where 0, 60 are substantially overlapped in a flat plate shape is obtained, whereby the folding of the expandable / contractible umbrella 1 is completed. Note that FIG. 33 shows only the front plate-shaped body 60.

Conversely, when the lower shaft handle 9 at the ascending position is moved downward and the movable wheel 22 is moved upward, the tension of each operation cord 56 is applied by the spring property of the bending portion 37. The operation string returns. According to the return amount, the first and second bending pieces 40, 41 of all the bending portions 37, 37, 37, 37 are simultaneously expanded, and finally, as shown in FIGS. As a result, the shaft handle 2 extends to the maximum and the umbrella body 6 is expanded. in this way,
When the lower shaft handle 9 at the ascending position is moved downward, the spring of the bending portion 37 in the expanding direction is always acting, so that the operation cord 56 is smoothly returned.

FIGS. 34 to 35 show an expanding / contracting umbrella 1 according to the present invention.
FIG. 34 is a schematic plan view showing another aspect of the present invention. The expanding / contracting umbrella 1 shown in FIG. 34 has an expanded panel shape formed by adjacent linear portions 36, 36 and a curved portion 37 connecting the tips thereof. Six portions 59 are provided in a symmetrical configuration. The expanding / contracting umbrella 1 shown in FIG. 35 includes twelve panel-like portions 59 in a symmetrical form.

In the expanding / contracting umbrella 1 according to the present invention, the panel-like portion 59 is not always configured in a symmetrical form. Figures 36 to 3
8 is a schematic plan view showing another embodiment of the expanding / contracting umbrella 1, and the expanding / contracting umbrella 1 shown in FIG. 36 arranges large panel-shaped portions 59a, 59a having a large area in front and rear in a symmetrical form. At the same time, small panel-shaped portions 59b, 59b having a small area
Are symmetrically arranged on the left and right. The umbrella 1 shown in FIG. 37 has large panel-shaped portions 59a and 59a having a large area and small panel-shaped portions 59b having a small area.
59b are arranged on the left and right, respectively, and the shape of the umbrella body in a plan view is a form imitating a butterfly. FIG. 3
The umbrella 1 shown in FIG. 8 has four panel-shaped portions 59 having the same size and shape arranged in the circumferential direction. Each of the panel-shaped portions 59 is asymmetrical in the left-right direction. The plan view of the body has a windmill shape. Thus, according to the present invention, various umbrella designs can be configured by combining panel-shaped portions having different shapes and sizes,
Also, the design can be changed.

In the expanding / contracting umbrella 1 shown in FIGS.
The configuration of the umbrella bone 5 that holds the covering cloth 3 (such as a configuration in which the long supporting bones 61a and the short supporting bones 61b are alternately arranged), the deformation operation means of the bending portion 37, the umbrella folding means, and the like are described in the above embodiment. It is the same as

When the large and small panel-shaped portions 59a and 59b are combined as shown in FIGS. 36 and 37, the wrapping deformation of all the panel-shaped portions is performed by moving the operation cord 56 of the same length. In this case, it is preferable to use the following slack absorbing mechanism 111 so as not to cause slack in the operation cord with respect to the small panel-shaped portion 59b.

The looseness absorbing mechanism 111 will be described in detail with reference to FIGS.
The operation string 56 connected to 7 is stretched as it is in the state where the curved portion 37 is protruded outwardly in the large panel-shaped portion 59a. However, in the small panel-shaped portion 59b, since the slack occurs when the operation string 56 having the same length as that in the large panel-shaped portion 59a is used, it is necessary to absorb the slack.

Therefore, as shown in FIG. 39, an adjusting hole 112 and a mounting hole 50 are provided inside and outside the operating piece 47 interposed between the upper and lower end connecting portions 45 and 46, and the inner adjusting hole 112 is provided.
The end of the operation string 56 inserted through the adjustment ring 112 is attached to the outer attachment hole 50, and the string portion 113 between the adjustment hole 112 and the attachment hole 50 is inserted into the adjustment ring 114. 114 is configured to be pulled by an elastic string 115 such as a rubber string, and the distal end 116 of the elastic string is
1 is fixed to the required part.

However, when the umbrella body 6 is in the opened state in the expanding / contracting umbrella 1 having such a configuration, as shown in FIG. When the string 113 existing between the adjustment hole 112 and the string 113 is elastically pulled by the elastic string 115, the operation string 56 is in a stretched state. Then, until the entanglement deformation of the large panel-shaped portion 59a progresses to some extent,
The elastic string 115 is extended, and the operation string 56 related to the small panel-shaped portion 59b is drawn. During that time, the entanglement deformation of the small panel-shaped portion 59b is not performed. After the operation string 56 is further pulled and the string portion 113 between the adjustment hole 112 and the mounting hole 50 is in a stretched state as shown in FIG. 40, the operation string 56 is continuously drawn. when,
As shown in FIG. 41, the small panel-shaped portion 59b is entangled and deformed.

[Second Embodiment] FIGS. 42 to 43 show one embodiment of an expanding / contracting umbrella 1 provided with an odd number of curved portions 37. For example, three curved portions 37, 37, 37 are provided. It is a case where it comprises.

In the case where the number of the curved portions 37 is odd, assuming that a flat plate is formed in the same manner as described in the above embodiment, the three flat plates cannot be superposed. Will be. Therefore, it is necessary to adopt a configuration that allows one of the curved portions to be easily folded in two. The expandable and contractable umbrella 1 according to the present embodiment is characterized in that one of the expanded panel-shaped portions 59A formed by the adjacent linear portion and curved portion is configured to be able to be folded into two without difficulty. There is.

More specifically, as shown in FIGS. 42 to 43, a more specific structure of the expandable / contractible umbrella 1 according to the present invention is provided with an umbrella bone 5 for holding a covering cloth 3 on an upper part of a shaft handle 2. When the umbrella bone 5 is in a deployed state, the umbrella surface has a triangular pyramid shape, and an umbrella body 6 having excellent strength can be formed. The umbrella bone 5 is elastically reduced and the shaft handle 2 is shortened. As shown in 3,
The umbrella body 6 can be compactly folded into a plate shape. Since the configuration of the shaft handle 2 is the same as that in the above-described embodiment, a specific description thereof will be omitted.

As shown in FIG. 43, the umbrella bone 5 has a base end 35 pivotally attached to a fixed wheel 33 provided above the shaft handle 2 so as to be rotatable in a vertical direction, and radially outwardly. Three linear portions 36, 36, 36 protruding at substantially equal angular pitches;
It has a curved portion 37 connecting the tips 34, 34 of the adjacent linear portions 36a, 36b. Therefore, the curved portion 3
7 are provided. The material and the like of the curved portion 37 are the same as those described above. The curved portion 37 is formed so as to protrude outward by its spring property, and is connected to the tip of the linear portion 36 in an arc shape. The bending portion 37 is separated at substantially the center when viewed in its expanded state. In FIG. 43, in plan view, the first bending piece 40 on the right and the second bending piece 41 on the left
Consists of

The curved portion 37 is made of the same material as described above, and its cross-sectional shape is configured to have a rectangular cross-section as described above in order to increase the rigidity in the vertical direction. I have. One of the curved portions 37 (hereinafter, referred to as a first curved portion) 37A is viewed in an expanded state,
As shown in FIGS. 44 to 45, in a state where the first bending piece 40 and the second bending piece 41 are connected, the distal end 11
9 is twisted at an angle of about 45 degrees so that the lower end 120 is located closer to the shaft handle 2 than the upper end 121. At the distal ends of the first bending piece 40 and the second bending piece 41, connecting pieces 122 and 123 are provided in a protruding manner in the inclined direction, and distal connecting portions 45 and 46 are provided. The two connecting pieces 1
22 and 123 are superimposed on the mounting piece 125 of the operation piece 47 and connected by the pivot 126.
46 are rotatable in opposite directions about an axis L2 (FIG. 45) inclined with respect to a plane 124 formed by the curved portion 37A. In the operation piece 47, a protruding piece 127 is continuously provided to the mounting piece portion 125, and a mounting hole 129 is provided in the protruding piece 127. The mounting hole 1
29 is connected to one end 57 of the operation cord 56 in the same manner as described above, and by pulling (moving) the one end 57 toward the shaft handle 2, both end connecting portions 45 and 46 rotate in opposite directions to each other. The connecting portion 55 is drawn toward the shaft handle 2 while the surface 130 formed by the bent portions of the first curved piece 40 and the second curved piece 41 as shown in FIG. 46. , 131 are inclined inward and downward with respect to the plane 124 (FIG. 43) formed by the curved portion 37A (the inclination direction is indicated by an arrow in FIG. 46), and finally, as shown in FIG. The adjacent linear portions 36a, 36
Between 6b, a valley shape having a concave central longitudinal portion is formed, and a bent panel-like body 132 having an external heart shape is formed. Therefore, the valley-shaped portion 133 is defined as a bending line L.
48 is formed by elastically bending the bent panel-shaped body 132 formed by the adjacent linear portions 36a and 36b and the curved portion 37 into two. The curved portion 37 forming the two-fold flat plate 135 has a spring property.
When the external force is released, it can be suddenly deployed outward as shown in FIG.

On the other hand, the other curved portions (hereinafter referred to as second curved portions) 37B, 37B are configured in the same manner as in the above-described embodiment, and are separated substantially at the center when viewed in the expanded state. The first bending piece 40 on the right side and the second bending piece 41 on the left side in plan view. The tip connecting portions 45 and 46 of the curved pieces 40 and 41 are mutually connected as shown in FIG.
19 to 19, the operation pieces 47 are vertically stacked with the operation pieces 47 interposed therebetween, and connected by the pivot 51 so that the two end connection portions 45 and 46 form the curved portion 37B. Axis L substantially perpendicular to (FIG. 43)
It is possible to rotate in the opposite direction around one direction (FIG. 2
1). One end 57 of the operation cord 56 is connected to the mounting hole 50 of the operation piece 47, and the one end 57 is pulled (moved) toward the shaft handle 2, thereby connecting the front end connecting portions 45 and 4.
The connecting portion 55 is pulled toward the shaft handle 2 while the rotating members 6 are rotated in opposite directions. As shown in FIG.
The first curved piece 40 and the second curved piece 41 are elastically entangled and deformed in a plane formed by the curved portion 37, and finally, the adjacent linear portions 36, 36 and the curved portion 37 The unfolded panel-like portion 59 shown in FIG. 43 is formed by the flat heart-shaped flat body 6 shown in FIG.
0, so that the covering cloth 3 existing in the panel-like portion 59 is folded substantially in the same manner as shown in FIG. When the external force is released, the curved portion 37 bent so as to form the flat body 60 can be protruded outward by its spring property. In FIG. 49, for convenience, only the front plate-shaped body 60 is shown.

As shown in FIGS. 43 and 50, the linear portion 36 and the movable wheel 22 that can move up and down along the shaft handle 2 are pivotally connected by a support bone 61. By moving the movable wheel 22 up and down, the inclination angle of the linear portion 36 can be changed.

In the present embodiment, three support bones 61, 6 corresponding to the three linear portions 36, 36, 36 are provided.
As shown in FIG. 43, the support bones connected to the two linear portions 36, 36 connected to both ends of the first curved portion 37A are provided as shown in FIG.
The long supporting bone 61a has a long length, and the supporting bone existing between the second curved portions 37B, 37B is a short supporting bone 61b having a short length. The distal end 65 of the long supporting bone 61a is connected to a portion on the front side of the linear portion 36, and the distal end 67 of the short supporting bone 61b is connected to a substantially central portion of the linear portion 36. .

The relationship between the length of the long support bone 61a and the length of the short support bone 61b is as shown in FIG.
When the short support bone 61b is lowered to be in a state substantially along the shaft handle 2 (may be slightly inclined), the long support bone 61a is moved so that its upper end 70 is more outward than the lower end 71. It is set so as to exhibit a tilted state (eg, a tilted state of about 60 degrees) and to be separated from the shaft handle 2.

The folded plate-shaped body 60 and the elastically folded half-folded plate-shaped body 135 (FIG. 48) are arranged so that the whole thereof can be substantially overlapped with each other as shown in FIG.
As shown in the figure, the lower end 71 of the long support bone 61a and the base end 3 of the linear portion 36A connected to the long support bone 61a.
5 is rotatable around the axis of the shaft handle 2. The configuration that enables the rotation in this manner is the same as in the above-described embodiment.

Then, the three bending portions 37, 37, 3
7, the pulling operation of the three operation cords 56, 56, 56 connected to the operation pieces 47, 47, 47 is performed by operating the same operating means 81 as in the above-described embodiment. It is performed in conjunction with the moving operation and the up-and-down moving operation of the movable wheel 22. The operating means 81 has the configuration shown in FIGS. 43 and 50, and has the same configuration and operation as those in the above-described embodiment. Therefore, the same reference numerals are given to the main components and the detailed description is omitted. I do.

However, in the case of the expanding / contracting umbrella 1 having the above structure, as shown in FIGS. 42 to 43, the upper shaft handle 7 is pulled out to the maximum and the shaft handle 2 is fixed in an extended state. Further, when the movable wheel 22 is in a state of being supported by the upper engaging pieces 23 in the protruding state, as shown in FIG. 43 and FIG. When the operating cords 56, 56, 56 that have been pulled are returned while the 36, 36, 36 are pushed up, the bending portions 37, 37, 37 are deployed outwardly by their spring properties. Becomes In this state, the operation cord 56 is in a stretched state in which the elastic expansion of the bending portion 37 is regulated to a constant value. With the umbrella body 6 thus opened, it can be used in the same manner as a conventional umbrella.

When the umbrella body 6 is in the opened state, as shown in FIGS.
Since the curved portion 37 is continuous with the curved portion 37 in an arc shape, there is a danger that the tip of the straight umbrella hits the eyes of surrounding people as in a conventional umbrella in which the tip of the straight umbrella projects outward. Can be prevented.

In the state where the umbrella body 6 is thus opened,
When the lower shaft handle 9 is moved upward, as shown in FIG. 25 in the embodiment, a bundle of operation cords (string-like material) 10 is formed.
5 is pulled upward in the guide groove 29 provided in the upper shaft handle 7, and as a result, the connecting portion 55 of the curved portion 37 is, as shown in FIG. Attracted to. Thereby, the first curved piece 4
0 and the second curved piece 41 are elastically entangled and deformed.

By setting the amount of upward movement of the lower shaft handle 9 as required, the state of entanglement of the curved pieces 40 and 41 can be set as required. The design (form) of the peripheral portion 109 of the umbrella can be changed accordingly. FIG. 51 shows an example of the change, and this state is fixed by the engaging action between the small engaging projection 30 and the engaging opening 31 in the same manner as shown in FIG.

When the lower shaft handle 9 is moved upward to a position where the upper end 17 contacts the upper engagement piece 23 in the same manner as shown in FIG. The second curved pieces 40 and 41 are entangled and deformed. Thereafter, when the lower shaft handle 9 is further moved upward, the upper engagement piece 23 is
In the same manner as shown in FIG. 7, the movable wheel 22 is immersed in the upper shaft handle 7 so that the movable wheel 22 can move downward. In this state, the upper end 17 of the lower shaft handle 9 comes into contact with the stopper piece 12 provided in the same manner as described above, so that the shaft handle 2 is in a shortened state. Next, by moving the movable wheel 22 downward, the connecting portions 55, 55, 55 are drawn toward the upper guide portion 83 (FIG. 50).
At the same time, the connecting portions 63 at the lower ends of the three support bones 61, 61, 61 move downward, so that the three linear portions 36, 36, 36 are folded downward.

FIG. 49 shows the lowest state of the movable wheel 22. At this time, the connecting portion 55 is brought into a state of being close to the upper guide portion 83 and the second curved portion 3
7B will be folded in the shape of an external heart. In this state, as shown in FIG. 47, the first curved portion 37A is bent in the shape of a heart shape having a concave central longitudinal portion. Along with this, the covering cloth 3 present in the developed panel-like portion 59 (FIG. 43) is
Is folded in the same manner as shown in FIG.

As shown in FIG. 49, the short support bone 61b is substantially in line with the shaft handle 2, and the upper end 70 of the two long support bones 61a has a lower end 71.
47. The outer shape is inclined away from the shaft handle 2 so as to be positioned more outwardly (for example, inclined about 60 degrees), and as shown in FIG. Is present between the two flat plate members 60, 60. Thereafter, when the bent panel-shaped body 132 is strongly sandwiched between the two flat plates 60, 60, the bent panel-shaped body 132 is elastically folded in two with the valley-shaped portion 133 (FIG. 47) as a bending line, and FIG. Is formed, and a state is obtained in which the two-folded flat plate 135 and the substantially entire flat plates 60, 60 overlap each other, whereby the folding of the expandable / contractible umbrella 1 is completed.

Conversely, when the lower shaft handle 9 at the ascending position is moved downward, the operation strings return by tension of the operation strings 56 due to the spring property of the bending portion 37. According to the return amount, all the curved portions 37, 37, 3
The first and second curved pieces 40, 41 according to 7, 37 will be simultaneously spread, and finally, as shown in FIGS. It will be in the expanded state. As described above, when the lower shaft handle 9 at the ascending position is moved downward, the spring property of the bending portion 37 in the expanding direction is constantly acting, so that the operation cord 56 is smoothly returned. become.

FIG. 52 shows another embodiment of the expanding / contracting umbrella 1 in the case where the number of the curved portions 37 is odd.
The number of panel-shaped portions 59 formed by the umbrella body and the linear portions connected to both ends thereof is set to five, and the shape of the umbrella body formed in a plan view has a form imitating a plum flower. One of the panel-like portions 59A is configured so as to be able to form a bent panel-like body having an external heart shape in which a longitudinal center portion is concave in a valley shape.

In the case where the curved portion is set to an odd number as described above, similarly to the case of the above-described embodiment in which the curved portion is set to an even number, the panel-shaped portion is provided with a large and small size, and the large and small panel-shaped portion is disposed at a required position. Can be provided.

[Other Embodiments] (1) The umbrella bone 5 in the above embodiment has a configuration in which the tips of the adjacent linear portions 36, 36 are connected to each other by a curved portion 37. As shown in FIGS. 53 to 54, the annular members 1 are provided between the adjacent linear portions 36, 36 respectively.
36 may be provided. The annular member 13
Numeral 6 is formed by, for example, bending a single spring wire in the shape of a band plate into an annular shape, and turning the tip connecting portions 45 and 46 of the first curved piece 40 and the second curved piece 41 in opposite directions. The linear portions 3 are attached to both ends of a curved portion 37 which is movably connected.
It has a configuration in which side pieces 137, 139 arranged along 6, 6 and 36 are connected. The annular member 136 having such a configuration is arranged such that the base end portion 140 is close to the shaft handle 2 and both side pieces 137 and 139 are arranged along the adjacent linear portions 36 and 36. 137,1 on both sides
The curved portion 37 is provided by fixing the fixing member 39 to the linear portions 36, 36 with a fixing bracket 134. In the present invention, the point is that the ends of the adjacent linear portions are connected to each other by a curved portion having a spring property. When the expandable / contractible umbrella 1 having an odd number of curved portions is formed using the annular member 136 as described above, the bent panel-like body formed in the same manner as described above is elastically bent at its bending line. In order to facilitate the folding operation, for example, as shown in FIG.
The two may be pivotally connected 138 so as to be rotatable.

(2) The linear portion 36 radially protruding outward from the upper part of the shaft handle is not limited to an accurate straight line, and slightly curves upward when the umbrella is opened. It may be slightly bent, such as a bent state.

(3) The operating member is formed using a resin-coated wire or the like as long as the operating portion is capable of elastically deforming a curved portion formed by connecting the first and second curved pieces. In addition, it can also be configured using a link device or the like.

(4) In the case where the curved portion is viewed from its expanded state and is substantially separated from the center at the central portion to be composed of the first curved piece and the second curved piece, the curved portion is correctly separated at the central portion. It is not always necessary to make the first curved piece and the second curved piece separate by being slightly displaced from the central portion.

(5) As long as the bending portion can be deformed by moving the operation member to change the shape of the edge portion of the umbrella body, the tip connecting portion of the first and second bending pieces divided into two parts can be connected. It is not necessary to connect one end of the operating member to the connecting portion of the operating member, and one end of the operating member may be connected to a required portion of the integral curved portion.

(6) The shaft handle may be configured to be expandable and contractible as described in the above embodiment, and may be configured to be bendable. Or, if the length of the shaft handle is short,
It may be configured so that it does not expand or contract or bend.

(7) FIGS. 55-56, 57-58, 59
61 to 62 and FIGS. 61 to 62 show other modes of the operation means 81 for pulling the operation cord 56. The operating means 81 shown in FIGS. 55 to 56 is composed of an upper shaft handle 7 having a pipe shape and a lower shaft handle 9 having a pipe shape which can be inserted into the upper shaft handle 7. A helical shaft 143 is provided along the center line, and its upper end 1
45 is supported by a bearing 146 at the upper end of the upper shaft handle 7, and the helical shaft 143 can be rotated forward and backward around its axis. Further, the upper end of the upper shaft handle 7 is configured as an enlarged cylindrical portion 147 having a slightly larger diameter, and a reel 149 is fixed to the upper end side of the spiral shaft 143 in the enlarged cylindrical portion 147. The peripheral surface of the enlarged cylindrical portion 147 has 9
An introduction hole 150 is provided at an angle pitch of 0 degrees, and the other end of an operation member (operation string) 56 having one end connected to a connection portion between the first and second bending pieces of the bending portion is a fixed wheel. After being guided by the guide ring 148 provided in the 33, the guide ring 148 is introduced into the enlarged cylindrical portion 147 from the introduction hole 150, and the tip is fixed to the reel 149. At the upper end of the lower shaft handle 9, there is provided an operation portion 152 provided with a spiral groove capable of being screwed with the spiral shaft 143, and the spiral shaft 143 is screwed with the spiral groove of the operation portion 152. In this state, the lower shaft handle 9 is inserted into the upper shaft handle 7, and in this state, the lower shaft handle 9 is moved upward as shown in FIG.
By the forward rotation of the reel 149 accompanying the rotation of the spiral shaft 143, for example, four of the operation cords 56 are wound by an equal length. As a result, the curved portion is drawn toward the shaft handle 2, and the curved portion is elastically required to be deformed as necessary. Conversely, the lower shaft handle 9 in the rising state
Is moved downward, the reel 149 rotates in reverse with the reverse rotation of the helical shaft 143, and the respective operation cords 56 are rewound.
7 will expand elastically.

FIGS. 57 to 58 show another embodiment of the operating means 81, wherein the shaft handle 2 is a pipe-shaped upper shaft handle 7 and a pipe which is externally inserted into the upper shaft handle 7. And a lower shaft handle 9 having a shape. A guide groove 29 is provided on the peripheral surface of the upper shaft handle 7 over the entire length in the vertical direction. The upper shaft handle 7 has a 90
Introducing holes 155 are provided at an angle pitch of degrees, and a movable ring 156 is accommodated in the upper shaft handle 7, and a fixed wheel 3
An operation member (operation string) 56 guided into the upper shaft handle 7 from the introduction hole 155 after being guided by the guide ring 154 provided in the movable ring 156, is inserted into the guide hole 157 of the movable ring 156, The tip 159 is fixed to the upper end 160 of the upper shaft handle 7. The movable ring 156 is connected to the upper end 162 of the operation string 161, and
1 is inserted through a fixing ring 163 provided at the lower end of the upper shaft handle 7 and then guided to a guide groove 29 provided in the upper shaft handle 7, and the other end 165 of the operating cord 161 is connected to the lower shaft handle 9. It is fixed to the upper end. However, by moving the lower shaft handle 9 upward as shown in FIG. 58, the movable ring 156 is lowered via the operation cord 161. Accordingly, each of the operation cords 56 is pulled, the connecting portion of the curved portion is pulled toward the shaft handle 2, and the curved portion is elastically deformed. Conversely, when the lower shaft handle 9 at the ascending position is moved downward, the operation strings 5
The operation cord returns in a state where tension is applied to 6,
The curved portion expands according to the return amount.

FIGS. 59 to 60 show another embodiment of the operation means 81. An upper guide ring 167 is provided at the upper end of the shaft handle 2 and a movable wheel that can move up and down along the shaft handle 2. FIG. 22 is provided with a lower guide ring 169 at the upper end thereof. After the operation string 56 is guided by the upper guide ring 167 and the lower guide ring 169, respectively, the end 170 of the operation string 56 is placed above the upper shaft handle 7. Fixed. Therefore, as shown in FIG. 60, for example, by moving the movable wheel 22 downward with the lower shaft handle 9 raised, one end of the operation cord 56 can be pulled toward the shaft handle 2 side. The curved portion is elastically deformed according to the amount of pull. Conversely, when the movable potter's wheel at the lowered position is moved upward, the operation cord 56 is sequentially returned, and the bending portion is elastically expanded according to the return amount.

FIGS. 61 to 62 show another embodiment of the operating means 81, wherein the shaft handle 2 has a pipe-shaped upper shaft handle 7 and a lower shaft handle 7 which is inserted into the upper shaft handle 7. Shaft handle 9
It is composed of At the upper end of the peripheral surface portion of the upper shaft handle 7, introduction holes 171 are provided at an angular pitch of 90 degrees in the circumferential direction, and the guide ring 1 provided on the fixed wheel 33 is provided.
The four operation cords 56, 56, 56, 56 introduced into the upper shaft handle 7 from the introduction hole 171 after being guided by the
The intermediate guide ring 168 provided at the upper part of the upper shaft handle 7 and the lower guide ring 1 provided at the lower end of the upper shaft handle 7
After being inserted through the 72 guide holes 173, it is fixed to the lower end of the upper shaft handle 7 at a portion 175 facing the lower guide ring 172. A guide ring 176 is also provided on the upper end of the lower shaft handle 9, and the operation cords integrated into one are inserted into guide holes 177 of the guide ring 176. However, as shown in FIG.
Is moved upward, the one end of each of the operation cords 56 connected to the curved portion is pulled toward the shaft handle 2, and the curved portion is elastically deformed. Conversely, when the lower shaft handle 9 at the ascending position is moved downward, the operation strings return in a state where tension is applied to each operation string 56 due to the resiliency of the bending portion. Accordingly, the curved portion expands.

(8) By selectively moving a plurality of operating members connected to the respective bending portions, the bending portions can be individually deformed.

(9) In the present invention, when the umbrella body is foldable, the lower end of the specific long supporting bone and the base end of the linear portion connected to the long supporting bone are each moved by a movable wheel. And a fixed potter's wheel (upper part of the shaft handle) so as to be rotatable, whereby the entire plate-like body may be substantially overlapped. The pivoting in this case, and the pivotable pivoting in the case shown in the above embodiment, use various known pivoting structures, and the lower end of the long support bone or the proximal end of the linear portion. This can be done by making the part rotatable.

(10) As a means for fixing the bending portion in a predetermined deformed state, a special fixing means having a stopper function is used. May be used.

[0089]

The present invention has the following excellent effects. (1) The expanding / contracting umbrella according to the present invention employs a configuration in which the tips of the adjacent linear portions are connected to each other by a curved portion, so that the conventional folding umbrella in which the tips of the linear umbrella bones project outward. As described in (1), there is no danger that the protruding portion of the tip hits the eyes of surrounding people, and the safety in use can be ensured.

(2) The expanding / contracting umbrella according to the present invention is constructed such that one end of an operating member is connected to a required portion of a curved portion, and the operating member is moved so that the one end moves toward the shaft handle. ,
Since the bending portion is configured to be deformable and a predetermined deformation state is configured to be fixed, the design (form) of the expanded umbrella body can be changed according to the amount of movement. Moreover,
The deformation of the curved portion, in addition to being performed in a state in which the linear portion protrudes radially outward and the umbrella body is open, and can be performed in a state in which the linear portion is slightly angled obliquely downward, The shape of the umbrella body can be freely changed by a combination of the angle of the linear portion and the change in the shape of the bending portion, and further by changing the shape of the selected bending portion. Therefore, according to the present invention, the design (form) of one umbrella can be freely changed according to daily moods to enjoy the fashion.

(3) In the case where the bending portion is constituted by rotatably connecting the distal end connecting portions of the first and second bending pieces, the bending portion is formed by the elastic entanglement deformation of the two bending pieces. There is an advantage that the deformation of can be easily performed by the rotation operation. In particular, when the curved portion is separated substantially at the center to form the first and second curved pieces, there is an advantage that the curved portion can be easily deformed with good left-right balance.

(4) According to the present invention, the form of the open umbrella itself can be variously designed by a combination of the panel-shaped portions having different shapes and sizes, and the design is determined by the shape of the curved portion. Various changes can be made by deformation.

(5) The expandable / contractible umbrella according to the present invention is formed by flattening a developed panel-like portion formed by an adjacent linear portion and a curved portion connecting the tips thereof by a required moving operation of the operating member. In the case where the umbrella can be folded into a small shape and the folded portions can be substantially overlapped, the entire folded umbrella can be folded into a thin plate shape. Therefore, unlike the conventional folding umbrella, which has to be folded in a round shaft shape with a large diameter or in a folded state by laminating a disc-shaped portion with a relatively large diameter, it does not use much space. Therefore, the folding umbrella can be easily stored in a bag.

(6) Further, since the expanding / contracting umbrella according to the present invention has a configuration in which the deformation operation and the deformation return operation of all the bending portions are performed by the forward / reverse moving operation of the operating member, the bending portions are deployed. At this time, it can be deployed quietly in consideration of the spring property. Therefore, when according to the present invention, a disk-shaped portion is formed by twisting the ring having spring properties several times into an eight-shape or the like,
When the umbrella is opened, there is no danger that the umbrella spreads at once when the umbrella is opened, as in a conventional folding umbrella that folds the umbrella. In addition, since the umbrella is not spread at once, it is possible to avoid a risk that the umbrella may be damaged by an impact at that time.

(7) The expanding / contracting umbrella according to the present invention can form a polygonal umbrella surface such as a triangular pyramid, a quadrangular pyramid, or a hexagonal pyramid in its expanded state, and therefore has a high rigidity. It has the advantage of being able to compose the body.

(8) When the respective operation members can be simultaneously pulled and operated, all the expansion and folding of the expanded panel-like portion formed by the adjacent linear portion and the curved portion connecting the tips thereof are performed. , Can be easily and efficiently performed by hand operation on the shaft handle side.

(9) In the case where the shaft handle is of a telescopic type, when the operation of moving the operating member is performed in conjunction with the reduction operation of the shaft handle and the folding operation of the linear portion, the expansion and contraction type umbrella is used. There is an advantage that folding can be efficiently performed by a series of operations. For example, in FIGS. 59 to 60, since the operation cord is pulled only by moving the movable wheel downward,
Although it is possible to simultaneously fold the linear portion and change the winding of the first and second curved pieces, it is necessary to perform the reduction of the shaft pattern by a separate operation. And the efficiency of folding is poor.

(10) Regarding the required long supporting bones and the linear portions connected thereto, when these are pivotally connected to each other so as to be rotatable around the axis of a shaft handle, the formed flat plate-like body is used. Can be rotated around the axis of the shaft handle without difficulty, so that the entire flat body can be easily superposed structurally without difficulty.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an expanding / contracting umbrella according to the present invention in an expanded state.

FIG. 2 is a perspective view showing the expanding / contracting umbrella according to the present invention in an expanded state.

FIG. 3 is a perspective view showing a state in which the expanding / contracting umbrella is folded.

FIG. 4 is a partially cutaway perspective view showing a state in which an extended state of a shaft handle is fixed by engagement of a lower engagement piece and an engagement claw piece.

FIG. 5 is a cross-sectional view showing a state in which four operation cords are introduced into an upper shaft handle via a guide provided on a movable wheel.

FIG. 6 is a cross-sectional view showing a state in which an extended state of a shaft handle is fixed by engagement of a lower engagement piece.

FIG. 7 is a cross-sectional view showing a state in which the lower end of the operation cord introduced into the upper shaft handle is fixed to the lower shaft handle.

FIG. 8 is a perspective view showing a connection state of a supporting bone to a movable potter's wheel supported by an upper engagement piece.

FIG. 9 is a perspective view showing a state where the movable wheel is supported by the upper engagement pieces.

FIG. 10 is a cross-sectional view showing a state where the movable wheel is supported by the upper engagement pieces.

FIG. 11 is a cross-sectional view showing a state in which the upper end of the lower shaft handle that has moved upward is in contact with an upper engagement piece.

FIG. 12 is a cross-sectional view showing a state in which the upper engaging piece is pressed by the upper shaft handle, and the movable wheel is now movable downward.

FIG. 13 is a cross-sectional view showing a state in which the length of the shaft handle is fixed to a predetermined length by engagement between a small engagement protrusion provided on the lower engagement piece and an engagement opening provided on the lower shaft handle. .

FIG. 14 is a cross-sectional view showing a state in which the engagement between the small engagement protrusion and the engagement opening is released.

FIG. 15 is a perspective view showing a state in which a linear portion protruding radially at an upper part of a shaft handle is supported by a supporting bone in an expanded state.

FIG. 16 shows a connection state of a linear portion to a fixed wheel.
It is a perspective view shown with the state where the operation cord was guided to the upper guide part.

FIG. 17 shows how the linear portion is connected to the fixed wheel;
It is a perspective view which shows the connection state of the support bone with the movable wheel, and the guide state of the operation cord.

FIG. 18 is an exploded perspective view showing a connection structure of first and second curved pieces.

FIG. 19 is a perspective view showing a connected state of first and second curved pieces.

FIG. 20 is a cross-sectional view showing a state in which the first and second curved pieces are connected via an operation piece, together with a connection state of the operation cord to the operation piece.

FIG. 21 is a partial perspective view showing an elastic entanglement deformation state of the first and second curved pieces.

FIG. 22 is a perspective view showing a state in which the shape of the edge portion of the umbrella is changed, with a covering cloth being cut away.

FIG. 23 is a front view showing a state in which the first and second curved pieces have been completely involved in the deformation, with the covering cloth cut away.

FIG. 24 is a cross-sectional view showing a connection state of a linear portion to a fixed wheel.

FIG. 25 is a cross-sectional view showing a state in which the operation cord is pulled by being guided by a guide shaft provided at a lower end of the upper shaft handle by an upward movement of the lower shaft handle.

FIG. 26 is a perspective view showing a state in which the operation cord is pulled by being guided by a guide shaft provided at a lower end of the upper shaft handle by an upward movement of the lower shaft handle.

FIG. 27 is a perspective view showing a guide member for forming a guide hole for guiding an operation cord in a used state.

FIG. 28 is a cross-sectional view showing a guide hole formed using a guide member together with a guide state of an operation cord.

FIG. 29 is a cross-sectional view showing a state where the lower shaft handle at the lowermost position has begun to move upward;

FIG. 30 is a cross-sectional view showing a guide state of an operation cord in a guide groove of an upper shaft handle.

FIG. 31 is a perspective view showing an expanding / contracting umbrella in which the form of an edge portion is changed.

FIG. 32 is a perspective view showing a folded state of the expandable / contractible umbrella in a state where the movable wheel is at its lowest position.

FIG. 33 is a front view showing a final form in which the expandable umbrella is folded, with a covering cloth cut away.

FIG. 34 is a plan view showing an expanding / contracting umbrella having six symmetrical panel-shaped portions formed by adjacent linear portions and curved portions connecting the tips thereof.

FIG. 35 is a plan view showing an expanding / contracting umbrella having twelve panel-shaped portions.

FIG. 36 is a plan view showing an expanding / contracting umbrella configured by combining large and small panel-shaped portions.

FIG. 37 is a plan view showing another mode of the expanding / contracting umbrella configured by combining large and small panel-shaped portions.

FIG. 38 is a plan view showing another mode of the expanding / contracting umbrella configured by combining large and small panel-shaped portions.

FIG. 39 is a perspective view showing a slack absorbing mechanism attached to the small panel-shaped portion in the case of forming an expanding / contracting umbrella by combining large and small panel-shaped portions.

FIG. 40 is a plan view for explaining the operation of the slack absorbing mechanism.

FIG. 41 is a plan view showing a state in which the curved portion of the small panel-shaped portion is involved in the deformation;

FIG. 42 is a perspective view showing an expanding / contracting umbrella according to the present invention having three bending portions.

FIG. 43 is a perspective view showing an expanding / contracting umbrella according to the present invention having three bending portions.

FIG. 44 shows a retractable umbrella having an odd number of curved portions.
It is a perspective view which shows the connection structure of the 1st, 2nd bending piece which comprises a 1st bending part.

FIG. 45 is a sectional view showing the connection structure.

FIG. 46 is a perspective view showing a state where the first bending portion is slightly deformed.

FIG. 47 is a front view showing a bent panel-like body formed by bending and deforming a first bending portion.

FIG. 48 is a plan view showing a state where a bent panel-shaped body is folded in two.

FIG. 49 is a front view showing a folded state of the expandable / contractible umbrella having an odd number of bent portions, with a covering cloth cut off.

FIG. 50 shows a retractable umbrella having an odd number of curved portions.
It is a perspective view which shows the connection state of the linear part with respect to a fixed wheel, and the connection state of a support bone.

FIG. 51 is a perspective view showing a deformed state of an edge portion of an expanding / contracting umbrella having an odd number of curved portions.

FIG. 52 is a plan view showing an expanding / contracting umbrella having five bending portions in an expanded state.

FIG. 53 is a partial plan view showing an expanding / contracting umbrella in which a curved portion is constituted by an annular member, omitting a covering cloth.

FIG. 54 is an enlarged plan view showing a configuration of a base end side of an annular member.

FIG. 55 is a cross-sectional view showing another mode of the operation means for pulling the operation cord.

FIG. 56 is a cross-sectional view showing the operation.

FIG. 57 is a cross-sectional view showing another mode of the operation means.

FIG. 58 is a cross-sectional view showing the operation.

FIG. 59 is a cross-sectional view showing another mode of the operation means.

FIG. 60 is a cross-sectional view showing the operation.

FIG. 61 is a cross-sectional view showing another mode of the operation means.

FIG. 62 is a cross-sectional view showing the operation.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 expanding / contracting umbrella 2 shaft handle 3 covering cloth 5 umbrella bone 6 umbrella body 7 upper shaft handle 9 lower shaft handle 22 movable wheel 23 upper engagement piece 29 guide groove 33 fixed wheel 36 linear portion 37 curved portion 40 first bending Piece 41 second curved piece 45 tip connecting part 46 tip connecting part 47 operating piece 55 connecting part 59 panel-like part 60 plate-like body 61 supporting bone 81 operating means 83 upper guiding part 86 lower guiding part 90 guiding hole

Claims (13)

[Claims] 1. An umbrella bone holding a covering cloth is provided on an upper part of a shaft handle, and the umbrella bone has three or more linear portions projecting radially outward from the upper part of the shaft handle, and A curved portion that connects the tips of the linear portions that match each other. The curved portion is configured to protrude outward by its spring property, and one end of the operating member is connected to a required portion of the curved portion. By moving the operation member so that the one end moves toward the shaft handle, the curved portion can be elastically deformed, and a predetermined deformation state can be fixed. An expanding / contracting umbrella, which can be used as an umbrella in a state. 2. An umbrella bone for holding a covering cloth is provided on an upper part of a shaft handle, and the umbrella bone has three or more linear parts projecting radially outward from an upper part of the shaft handle, A curved portion that connects the tips of the straight portions that match each other. The curved portion is configured to protrude outwardly by its spring property, and the curved portion is divided into two portions to form the first curved piece and A distal end connecting part of the two bending pieces is rotatably connected in opposite directions to each other, and one end of an operating member is connected to a connecting part of the distal end connecting parts; By moving the operating member so as to move to the stalk side, the connecting portion is pulled toward the stalk side while the two distal end connecting portions rotate in opposite directions to each other, and the first The curved piece and the second curved piece can be elastically entangled and deformed, and a predetermined entangled deformation state is fixed. An expanding / contracting umbrella, which is made possible and can be used as an umbrella in this fixed deformed state. 3. An umbrella bone for holding a covering cloth is provided on an upper part of a shaft handle, and the umbrella bone has three or more linear portions projecting radially outward from an upper part of the shaft handle, A curved portion that connects the tips of the linear portions that match each other, and the curved portion is configured to protrude outward by its spring property, and the curved portion is substantially centered when viewed in its deployed state. A first curved piece and a second curved piece separated from each other by connecting the tip connecting portions of the two bending pieces so as to be rotatable in opposite directions. One end of the operating member is connected to the operating member, and the operating member is moved so that the one end moves toward the shaft handle. The first curved piece and the second curved piece can be elastically entangled and deformed by being pulled toward the shaft handle side. An expandable / contractible umbrella characterized in that a predetermined entangled deformation state can be fixed and can be used as an umbrella in this fixed deformation state. 4. The base portion of the linear portion is pivotally attached to a fixed wheel provided on an upper portion of the shaft handle so as to be rotatable in a vertical direction. A movable wheel is provided so as to be movable, the linear portion and the movable wheel are connected by a support bone, and the inclination angle of the linear portion can be changed by vertical movement of the movable wheel. The expandable / contractible umbrella according to claim 1, 2 or 3. 5. An umbrella bone holding a covering cloth is provided on an upper part of a shaft handle, and the umbrella bone has four proximal ends pivotally mounted on the upper part of the shaft handle and radially protruding outward. The above-mentioned even-numbered linear portions and a curved portion connecting the tips of the adjacent linear portions to each other are provided, and the curved portions are formed so as to protrude outward by their spring properties. Looks in its unfolded state,
The first curved piece and the second curved piece are separated from each other at a substantially central portion, and the tip connecting portions of the two curved pieces are opposite to each other about an axis substantially orthogonal to a plane formed by the curved portion. By connecting one end of an operating member to the connecting portion of the tip connecting portions, the operating member is moved so that the one end moves toward the shaft handle.
The connecting portion is drawn toward the shaft handle while the two front end connecting portions rotate in opposite directions to each other.
And the second curved piece are elastically entangled and deformed in a plane formed by the curved portion, and the first curved piece approaches the linear portion connected to the second curved piece, and The second curved piece approaches the linear portion connected to the first curved piece, and finally, the developed portion formed by the adjacent linear portion and the curved portion forms a flat plate. In addition, a required portion of the linear portion and a movable wheel that can move up and down along the shaft handle are connected by a support bone, and by moving the movable wheel up and down, the inclination angle of the linear portion is reduced. It is possible to change, the even number of support bones has a configuration in which long long support bones and short short support bones are alternately arranged, and the movable wheel is lowered to When the short supporting bone is in a state substantially along the shaft handle, the long supporting bone is The upper end is inclined so as to be located outside of the lower end so as to be separated from the shaft handle, and the folded flat plate is configured so that the whole thereof can be substantially overlapped. An expanding / contracting umbrella characterized by the following. 6. An umbrella bone provided on an upper part of a shaft handle for holding a covering cloth, the odd number of umbrella bones having a base end pivotally attached to the upper part of the shaft handle and projecting radially outward. And a curved portion connecting the tips of the adjacent linear portions to each other. The curved portion is adapted to protrude outward by its spring property, and the curved portion is When viewed in a state, the first bending piece and the second bending piece are separated from each other at a substantially central portion, and one of the bending parts is configured such that the distal end connecting portions of the two bending pieces are connected to each other by the bending part. Are connected to each other so as to be rotatable in opposite directions about an axis inclined with respect to the plane formed by the operation member, and one end of the operating member is connected to the connecting portion of the tip connecting portions, and the one end moves to the shaft handle side. By moving the operating member so that the connecting portions rotate forward in opposite directions, the connecting portions move forward. The surface formed by the bent portions of the first curved piece and the second curved piece is directed inward with respect to the plane formed by the curved portion. A valley having a concave central portion is formed between the adjacent linear portions inclined downward, and the valley-shaped portion can be elastically bent as a bending line, and formed by this bending. The part is formed so as to present a two-fold flat plate-like body, while the other curved parts are formed by connecting the distal end connecting parts of both curved pieces to each other.
One end of an operating member is connected to a connecting portion of the distal end connecting portions so as to be rotatable in opposite directions about axes substantially orthogonal to a plane formed by the curved portion, and the one end is connected to the shaft. By moving the operating member so as to move to the handle, the connecting portion is pulled toward the shaft handle while the tip connecting portions rotate in opposite directions to each other, whereby the first curved piece And the second curved piece elastically bend in a plane formed by the curved portion, and the first curved piece approaches the linear portion connected to the second curved piece, and the second curved piece Approaching the linear portion connected to the first curved piece, and finally, the developed portion formed by the adjacent linear portion and the curved portion forms a flat plate-like body; and Up and down movement along the required part of the linear part and the shaft handle The movable wheel that can be moved is connected by a supporting bone, and the inclination angle of the linear portion can be changed by moving the movable wheel up and down, and the odd number of supporting bones is one of the curved portions. The supporting bones connected to the two linear portions connected to both ends are long supporting bones, and all the supporting bones connected to the two linear portions connected to both ends of the other curved portion were observed. In this case, a short support bone having a short length is arranged between the long support bones having a long length, and the movable support wheel is lowered so that the short support bone is substantially along the shaft handle. The long support bone is inclined so that the upper end thereof is located outside the lower end, and is separated from the shaft handle. The folded flat plate is configured so that the whole can substantially overlap. Scaling type bevel, characterized in that there. 7. The folded plate-like body has a lower end portion of a required one of the support bones and a base end portion of a linear portion connected to the support bone so that the whole can substantially overlap each other. The umbrella according to claim 5, wherein the umbrella is rotatable about an axis of the shaft handle. 8. The lower end of a required one of the supporting bones and a straight line connected to the supporting bone so that the folded flat plate and the two-fold flat plate can be substantially overlapped with each other. The expandable and contractable umbrella according to claim 6, wherein a base end of the portion is rotatable around an axis of the shaft handle. 9. The moving operation of the operation member for deforming the curved portion as required is performed in a state where the linear portion protrudes radially outward and the umbrella is opened. Item 3. The umbrella according to item 1, 2 or 3. 10. The expansion / contraction system according to claim 9, wherein the operation of moving the operation member for deforming the curved portion as required is performed even when the angle of the linear portion is changed obliquely. umbrella. 11. When the umbrella bone is deployed, the linear portion presents an inclined state in which the distal end is located slightly lower than the proximal end, and connects the adjacent linear portion to the distal end. The expandable and contractable umbrella according to any one of claims 1 to 10, wherein an umbrella surface formed by a set of expanded portions formed by the curved portion forms a pyramid shape. 12. When the shaft handle is extendable, all of the operation members connected to each of all the curved portions can move up and down along the shaft handle in the expansion / contraction operation of the shaft handle and / or the shaft handle. 7. The expandable / contractible umbrella according to claim 4, 5 or 6, wherein the movable operation can be performed in conjunction with the moving operation of the movable wheel. 13. The shaft handle can be extended and contracted by inserting a pipe-shaped upper shaft handle into a pipe-shaped lower shaft handle, and an outer peripheral surface portion of the upper shaft handle has a vertically extending guide groove. Is provided, a string-shaped operation member having one end connected to a required portion of the curved portion is guided by a guide portion provided above the shaft handle, and then in a longitudinal direction of the shaft handle. It is guided by a guide portion provided on a movable wheel that is movably provided, then is introduced into the upper shaft handle and extends downward, and is folded upward at the lower end side of the guide groove so that the guide groove is formed. The other end of the operating member is fixed to the lower shaft handle, the upper end of the operating member of the operating member is caused by moving the lower shaft handle upward. It is configured so that the curved portion can be deformed by moving to the shaft handle side, and the lower shaft handle is After the required movement in the direction, by moving the movable wheel down, while changing the inclination angle of the linear portion, it is configured so that the one end can be closer to the shaft handle side. The expandable / contractible umbrella according to claim 4, 5, or 6.