JP3243958U - Folding umbrella - Google Patents

Abstract

[Problem] To provide a folding umbrella whose total length in a folded state can be shortened. [Solution] A folding method in which each of a plurality of umbrella ribs 51 branching in a radial direction is opened and closed so as to be foldable in a radial direction in conjunction with the opening/closing operation of the folding umbrella in which a lower wheel 34 is slid relative to a middle rod 31. It's an umbrella. The umbrella rib 51 is divided into five pieces, connected by four rotating connecting parts (rotating shaft parts RA1, RA2, RA3, RA4), and folded into five pieces with the folding directions alternated. The umbrella rib 51 includes a strut 52 rotatably attached to the upper wheel 33 in the radial direction, and four ribs 53 (former rib 53A, first rib 53A, and It has a middle rib 53B, a second middle rib 53C, and a leading rib 53D. The folding umbrella thus constructed has a total length of, for example, about 11 to 12 cm when folded. [Selection diagram] Figure 2

Description

The present disclosure relates to a folding umbrella.

The most popular folding umbrellas are two-tier or three-tier. A two-tiered folding umbrella has two main ribs, the original rib and the tip rib, which are foldably connected and can be folded in two.

For example, as described in Patent Document 1, a three-tiered folding umbrella includes a supporter (10) provided in front of an original rib (20) and a tip rib (30), and a supporter (10) provided on a middle rod so as to be slidable. The bridge is rotatably attached to the lower wheel (see abstract of Patent Document 1, paragraph 0008, FIGS. 1-2).

The folding umbrella described in Patent Document 1 has an umbrella opening/closing operation in which the bottom wheel is slid relative to the center rod by crossing two drawing lines (first drawing line 50, second drawing line 60) at appropriate locations. He is trying to open and close a plurality of bones (straight bone 10, original rib 20, tip rib 30) in the radial direction in conjunction with this. At this time, when the lower wheel is slid away from the upper wheel and the umbrella is folded, the bridges (10) are turned outward, the original rib (20) is turned inward, and the tip rib (30) is Each rotates outward, and the whole is folded into three (see paragraph 0009 of Patent Document 1, FIG. 2).

Patent Document 2 discloses a four-stage folding umbrella that further increases the number of folding stages and is folded into four. The umbrella rib is divided into four pieces: an abutment (original rib 41), an original rib (first split middle rib 42), a middle rib (second split middle rib 43), and a leading rib (44). Folding in four is possible (see paragraphs 0025-0034 and FIGS. 1-3 of Patent Document 2). The folding umbrella described in Patent Document 2 also allows the umbrella ribs to be opened and closed in conjunction with the opening and closing operations of the umbrella by extending three draw lines (wire-like continuous rods 51, 53, and wire springs 52) at appropriate locations. I have to.

A folding umbrella that can be folded into four stages is also described in Patent Document 3 (see FIGS. 1 and 3 of Patent Document 3).

Utility model registration No. 3185575 Japanese Patent Application Publication No. 2006-158637 JP2023-010456A

For some time, there has been a desire for folding umbrellas to be as small as possible. Miniaturization in this case involves two aspects: the desire to shorten the overall length when folded, and the desire to reduce the diameter when folded. The applicant of this application attempted to develop a new folding umbrella with the aim of shortening the overall length when folded.

In order to shorten the overall length when folded, a three-tiered folding umbrella that folds into three is more advantageous than a two-tiered folding umbrella that folds into two. However, even if a three-tiered folding umbrella has a diameter of, say, 85cm when opened, it will have a total length of just over 20cm when folded.

With a total length of just over 20cm, it may be small enough to be carried around in a medium-sized bag such as a briefcase or attache case that can store B4-sized documents. However, it is difficult to store it in a relatively small bag such as a handbag or side bag.

In this respect, according to the four-stage folding umbrella as described in Patent Documents 2 and 3, it is possible to further reduce the overall length. However, even if it is a four-tiered folding umbrella, it may be difficult to store it in a relatively small bag depending on its size. Moreover, it cannot be easily carried around in a coat pocket. Further shortening is required.

An object of the present disclosure is to shorten the overall length of a folding umbrella in a folded state.

One aspect of the folding umbrella is a folding umbrella in which each of a plurality of umbrella ribs branching in a radial direction opens and closes in a radially foldable manner in conjunction with an opening/closing operation in which a lower wheel is slid relative to a center rod, Each of the umbrella ribs is divided into five pieces, connected by four rotating joints, and folded into five pieces with the folding directions alternated.

One aspect of the folding umbrella is a folding umbrella in which each of a plurality of umbrella ribs branching in the radial direction can be opened and closed in a radially foldable manner, and each of the umbrella ribs is divided into five pieces and connected to four rotationally connected pieces. They are connected at the ends and folded into five with the folding directions alternating.

The total length of the folding umbrella when folded can be shortened.

The folding umbrella of the first embodiment is shown, in which (A) is a front view of the umbrella in an open state, and (B) is a front view of only the skeletal structure with the umbrella fabric omitted. (A) is a side view showing an enlarged view of one of the five radially branched umbrella ribs, with the drawing line removed and (B) the drawing line attached. The perspective view which shows typically the connection structure of the umbrella rib with an upper wheel and a lower wheel from below. FIG. 2 is a schematic side view of the connection structure of the umbrella rib to the upper wheel and the lower wheel, seen from one direction. A schematic side view of the connection structure of the umbrella rib to the upper wheel and the lower wheel, seen from another direction. The perspective view which shows a folding umbrella when it is folded. The side view which shows the folding umbrella together with a dimension line when it is folded.

Embodiments of the folding umbrella will be described based on the drawings. The explanation will be based on the following items.

1. Overview 2. Skeletal structure (1) Middle rod (2) Umbrella rib (a) Length of piece (b) Shape and material of piece (3) Opening/closing structure (4) Folding structure (a) Piece (b) Interlocking mechanism (5) Drawing 3. Umbrella fabric 4. Storage condition 5. Effects (1) Basic effects (2) Others (a) Length of the piece (b) Shape and material of the piece (c) Diameter of the folding umbrella 6. Variant

1. Overview As shown in FIGS. 1A and 1B, the folding umbrella 11 has a skeleton structure 12 in which five sets of umbrella ribs 51 that branch in the radial direction are opened and closed in the radial direction with respect to the middle rod 31. It is equipped with An umbrella fabric 71 is attached to the umbrella rib 51 so as to cover the entirety thereof. The skeleton structure 12 opens and closes the umbrella fabric 71 in accordance with the opening and closing of the umbrella ribs 51.

Each of the five sets of umbrella ribs 51 is composed of a strut 52 and a main rib 53. The main rib 53 is divided into four parts: an original main rib 53A, a first middle main rib 53B, a second middle main rib 53C, and a leading main rib 53D, and is connected to the middle rod 31 via a support bone 52. Therefore, each of the five sets of umbrella ribs 51 composed of the struts 52 and main ribs 53 is divided into five pieces.

In the present embodiment, the term umbrella rib 51 refers to a member that is a piece that constitutes the basic skeleton of the folding umbrella 11 that forms the skeleton structure 12. The folding umbrella 11 also has an auxiliary rib 55, which will be described later, as a so-called umbrella rib, but this auxiliary rib 55 is not included in the category of the umbrella rib 51 in this embodiment. This is because the auxiliary ribs 55 are elements for configuring the opening/closing structure described later, and are not pieces configuring the basic skeleton of the folding umbrella 11 that forms the skeletal structure 12.

As shown in FIGS. 2A and 2B, the skeleton structure 12 has a folding structure, and the umbrella rib 51, which is divided into five pieces, can be folded. More specifically, the strut 52 is attached to a lower wheel 34, which will be described later, provided on the middle rod 31 so as to be folded outward. The original rib 53A is attached to the strut 52 so as to be folded inward. The first middle rib 53B is attached to the original rib 53A so as to be folded outward. The second middle rib 53C is attached to the first middle rib 53B so as to be folded inward. The leading rib 53D is attached to the second middle rib 53C so as to be folded outward. "Inward" here means the direction of the ground facing downward when the folding umbrella 11 is held up, and "facing outward" means the direction of the sky facing upward.

As shown in FIGS. 1(A), (B) and 3, the skeletal structure 12 includes a support bone 52 and a main rib 53 (an original main rib 53A, a first middle main rib 53B, a second middle main rib 53C, and a first main bone 53D). The umbrella rib 51 is made up of five branches in the radial direction. The area between the umbrella ribs 51 adjacent to each other is a booth 54. Booth 54 is also divided into five parts.

As described above, the umbrella fabric 71 is stretched over the umbrella rib 51 configured in this way. The umbrella fabric 71 will be described later.

2. Skeletal Structure (1) Middle Bar As shown in FIGS. 1A and 1B, the middle bar 31 has a handle 32 at one end that can be held by the user, and a handle 32 at the opposite end. This is a pipe-shaped member that connects the frame 52 to the strut 52.

The middle rod 31 is divided into six tubes, which are a first tube 31a, a second tube 31b, a third tube 31c, a fourth tube 31d, a fifth tube 31e, and a sixth tube. It is constituted by a tube 31f. The first tube 31a is a tube that supports the umbrella rib 51 and has the largest diameter. Next, the diameters of the second tube 31b, the third tube 31c, the fourth tube 31d, the fifth tube 31e, and the sixth tube 31f to which the handle 32 is attached are tapered in this order.

A second tube 31b is slidably housed in the first tube 31a. Similarly, the second pipe 31b has a third pipe 31c, the third pipe 31c has a fourth pipe 31d, the fourth pipe 31d has a fifth pipe 31e, and the fifth pipe 31e A sixth tube 31f is housed in the respective portions so as to be slidable therein. In this way, the first to sixth tubes 31a to 31f have a nested structure as a whole.

The middle rod 31 is made of, for example, metal.

(2) Length of Umbrella Rib (A) Piece The stretcher 52, the original rib 53A, the first middle rib 53B, the second middle rib 53C, and the tip rib 53D, which are the pieces constituting the umbrella rib 51, are each have equal length.

The "length" here refers to the length of each piece 52, 53A to D when the individual pieces 52 and 53A to D constituting the umbrella rib 51 are disassembled. The individual pieces 52, 53A to 53D are provided with first to fourth connecting portions 56A to 56D, which will be described later, for connecting adjacent pieces to each other. The lengths of the individual pieces 52, 53A to 53D include the first to fourth connecting portions 56A to 56D.

The term "equal length" is a concept that includes not only a complete match down to the millimeter level, but also a state where the lengths almost match. An example of the approximate range of coincidence is, for example, 1 cm. If the difference in length between the individual pieces 52, 53A to 53D is 1 cm or less, it falls within the category of "equal length."

The length of the individual pieces 52, 53A-D is, for example, 10-11 cm.

(B) Piece shape and material The strut 52, the original main rib 53A, and the first drawing wire 57 are formed of metal with a bent cross-sectional shape. As an example, when the cross section of the strut 52 and the first drawing line 57 is taken, the bent shape is a pipe shape, and when the original master rib 53A is taken as a cross section, the bent shape is a U-shape. Such a bent shape can be realized by pressing or bending.

The first middle rib 53B, the second middle rib 53C, and the leading rib 53D have a round rod-like cross-sectional shape. Each of these pieces 53B to 53D is made of glass fiber, for example, or metal as another example.

Auxiliary bones 55, which will be described later, are molded from resin.

(3) Opening/closing structure As shown in FIGS. 1(A), (B) to FIG. 5, the middle rod 31 has an upper wheel 33 fixed to the end of the first pipe 31a, and a A lower wheel 34 is held in position so as to be slidable relative to the outer peripheral surface of the first tube 31a. Five auxiliary bones 55 are rotatably attached to the upper wheel 33, and five support bones 52 are rotatably attached to the lower wheel 34. The direction of rotation of the strut 52 and the auxiliary bone 55 is the radial direction, that is, the direction in which they open and close in the radial direction.

As shown in FIGS. 2(A), 2(B) and 3, the auxiliary bone 55 rotatably connects the end opposite to the one end attached to the upper wheel 33 to an intermediate position of the strut 52. are doing. In this embodiment, the connecting portion of the auxiliary bone 55 to the strut 52 is indicated by CT1. Such a connection structure between the struts 52 and the auxiliary bones 55 provides the folding umbrella 11 with a motive force that promotes the opening/closing operation.

When opening the folding umbrella 11, the lower wheel 34 is slid along the first tube 31a of the middle rod 31 in a direction approaching the upper wheel 33. Then, the movement of the strut 52 is restrained by the auxiliary bone 55, so that the strut 52 rotates in the opening direction. The rotated strut 52 makes an angle of about 70 degrees with respect to the middle rod 31 when the folding umbrella 11 is opened. In this way, the opening operation of the folding umbrella 11 is promoted.

When closing the folding umbrella 11, the lower wheel 34 is slid in a direction away from the upper wheel 33. Then, the movement of the strut 52 is restrained by the auxiliary bone 55, so that the strut 52 rotates in the closing direction. The rotated strut 52 is in a state substantially parallel to the middle rod 31. In this way, the closing operation of the folding umbrella 11 is promoted.

As shown in FIGS. 4 and 5, the upper wheel 33 is divided into two in the axial direction of the middle rod 31, and a wire Wu is interposed between the two divided parts 33a and 33b. The wire Wu surrounds the upper wheel 33 and is fixed at both ends (see FIG. 5). The five auxiliary bones 55 have rotational orbits determined by grooves Gu provided radially in the upper wheel 33, are rotatably held by the wire Wu, and are opened and closed in the radial direction.

Like the upper wheel 33, the lower wheel 34 is also divided into two in the axial direction of the middle rod 31, and a wire Wl is interposed between the two divided parts 34a and 34b. The wire Wl surrounds the lower wheel 34 and is fixed at both ends (see FIG. 5). The five struts 52 have rotational orbits determined by grooves Gl provided radially in the lower raceway 34, and are rotatably held by wires Wl to open and close in the radial direction.

The lower wheel 34 is equipped with an operation button 35 and has a built-in upper flicker (not shown). The upper repellent is provided on the inner circumferential surface of the lower wheel 34 so as to be freely protrusive and retractable, and is given a spring force in the direction of protruding toward the inner circumferential side. The first tube 31a of the middle rod 31 is provided with a fitting hole (not shown) into which the upper flap fits. The fitting hole is arranged at a position where the upper flap fits when the folding umbrella 11 is opened. When the upper flap fits into the fitting hole in this manner, the sliding movement of the lower wheel 34 in the direction of closing the folding umbrella 11 is restricted, and the folding umbrella 11 is maintained in the open state.

When the operation button 35 is pushed in, it functions to release the upward projection of the lower wheel 34 toward the inner circumferential side. Therefore, in order to close the folding umbrella 11, the operation button 35 is pushed in, the upper flap falls off from the fitting hole, and the movement restriction of the lower wheel 34 is released. The lower wheel 34 whose movement restriction has been released slides toward the handle 32, allowing the folding umbrella 11 to close.

(4) Folding structure When the folding umbrella 11 is closed, the support ribs 52 and ribs 53 (original rib 53A, first middle rib 53B, second middle rib 53C, and front rib 53D) that make up the umbrella rib 51 are , are arranged substantially parallel to the middle rod 31, and the folding umbrella 11 is in a folded state.

In the process of opening the folding umbrella 11, the strut 52 rotates away from the center rod 31. Then, the leading rib 53D is moved such that the original rib 53A is separated from the middle rod 31, the first middle rib 53B is separated from the original rib 53A, the second middle rib 53C is separated from the first middle rib 53B, and so on. Each rotates away from the second middle rib 53C. As a result, the original main rib 53A and the first middle main rib 53B are positioned almost on the same straight line, and the second middle main rib 53C and the leading main rib 53D are positioned at an angle bent at an obtuse angle from the straight line, and the folding umbrella 11 is opened. .

In the process of closing the folding umbrella 11, the strut 52 rotates outward, the original rib 53A rotates inward, the first middle rib 53B rotates outward, and the second middle rib 53C rotates inward. The leading rib 53D rotates outward. As a result, the struts 52 and main ribs 53 forming the umbrella ribs 51 are arranged substantially parallel to the middle rod 31, and the folding umbrella 11 is folded.

A structure for realizing such a folding operation of the folding umbrella 11 will be described below.

(A) Piece As shown in FIGS. 2(A) and 3, each of the umbrella ribs 51, which branches into five in the radial direction, is divided into five pieces and connected by four rotational connecting parts. The five pieces are a strut 52 and four main ribs 53A to 53D. Among these pieces 52, 53A, 53B, 53C, and 53D, four rotational connecting portions connect adjacent pieces to each other. The four rotational coupling parts are the respective rotation shaft parts RA1 to RA4 provided in the first coupling part 56A, the second coupling part 56B, the third coupling part 56C, and the fourth coupling part 56D. The first to fourth connecting portions 56A to 56D span the individual pieces 52, 53A, 53B, 53C, and 53D, and may be provided integrally or separately.

The first connecting portion 56A connects the strut 52 and the original main rib 53A. The support bone 52 and the original main rib 53A are connected by eyelets so as to rotate around a rotating shaft portion RA1 serving as a first rotational connecting portion.

The second connecting portion 56B connects the original main rib 53A and the first middle main rib 53B. The original main rib 53A and the first middle main rib 53B are connected by eyelets so as to rotate around a rotating shaft portion RA2 that serves as a second rotational connecting portion.

The third connecting portion 56C connects the first middle rib 53B and the second middle rib 53C. The first central rib 53B and the second central rib 53C are connected by eyelets so as to rotate around a rotating shaft portion RA3, which serves as a third rotational connecting portion.

The fourth connecting portion 56D connects the second middle rib 53C and the leading rib 53D. The second middle rib 53C and the leading rib 53D are connected by an eyelet so as to rotate around a rotation shaft portion RA4 serving as a fourth rotational connection portion.

(B) Interlocking mechanism As shown in FIGS. 2(B) and 3, the folding umbrella 11 of this embodiment is interlocked with the opening/closing operation of sliding the lower wheel 34 with respect to the center rod 31, and moves in the radial direction. It is provided with an interlocking mechanism IM that opens and closes each of the five branching umbrella ribs 51 in the radial direction. Such an interlocking mechanism IM is constituted by four drawn lines 57, 58, 59, and 60, numbered first to fourth. Among these first to fourth drawn lines 57 to 60, the first drawn line 57 is formed by bending a steel plate, and the second to fourth drawn lines 58 to 60 are made of steel wire.

The first drawing line 57 is spanned between the auxiliary rib 55 and the original main rib 53A. The connecting portion CT2 of the first draw line 57 to the auxiliary bone 55 is located on the distal side of the connecting portion CT1 of the auxiliary bone 55 to the bridge 52. The connecting portion CT3 of the first drawing line 57 to the original main rib 53A is located closer to the tip of the umbrella rib 51 than the rotating shaft portion RA1.

Therefore, when the folding umbrella 11 is opened, the first drawing line 57 pushes the original rib 53A and rotates it in the outward direction. When the folding umbrella 11 is closed, the original rib 53A is pulled and rotated inward.

The second drawn line 58 is spanned between the first drawn line 57 and the first central rib 53B. The connection portion CT4 of the second draw line 58 to the first draw line 57 is closer to the center rod 31 than the connection portion of the first draw line 57 to the original rib 53A. The connecting portion CT5 of the second drawing line 58 to the first central rib 53B is closer to the central rod 31 than the rotating shaft portion RA2.

Therefore, the second pull line 58 pulls the first central rib 53B to rotate it inward when the folding umbrella 11 is opened. When the folding umbrella 11 is closed, the first central rib 53B is pushed and rotated outward.

As described above, the original rib 53A has a bent cross-sectional shape. Therefore, the bent inner surface forms a space S (see FIG. 3). A portion of the second drawing line 58 is accommodated within the space S.

The third extension line 59 is spanned between the original main rib 53A and the second middle main rib 53C. The connecting portion CT6 of the third draw line 59 to the original main rib 53A is closer to the center rod 31 than the rotating shaft portion RA2. The connecting portion CT7 of the third drawing line 59 to the second central rib 53C is closer to the central rod 31 than the rotating shaft portion RA3.

Therefore, the third pull line 59 pulls the second central rib 53C to rotate it in the outward direction when the folding umbrella 11 is opened. When the folding umbrella 11 is closed, the second central rib 53C is pushed and rotated inward.

The fourth drawing line 60 is spanned between the first middle rib 53B and the front rib 53D. The connecting portion CT8 of the fourth drawing line 60 to the first central rib 53B is closer to the central rod 31 than the rotating shaft portion RA3. The connecting portion CT9 of the fourth drawing line 60 to the leading rib 53D is closer to the center rod 31 than the rotating shaft portion RA4.

Therefore, when the folding umbrella 11 is opened, the fourth pulling line 60 pulls the proximal rib 53D and rotates it inward. When the folding umbrella 11 is closed, the front rib 53D is pushed and rotated outward.

(5) Drawing The shapes of the umbrella rib 51 and the auxiliary rib 55 of this embodiment are as shown in FIG. 2. 3 to 5 schematically show the shapes of the umbrella ribs 51, auxiliary ribs 55, etc., and do not necessarily depict them accurately. Please refer to FIG. 2 for the exact shapes of the umbrella rib 51 and the auxiliary rib 55.

3. Umbrella Fabric The material of the umbrella fabric 71 is, for example, nylon or polyester. More specifically, it is 100% nylon or 100% polyester.

The umbrella fabric 71 is attached to an umbrella rib 51 composed of a support rib 52 and a main rib 53, and to an auxiliary rib 55. The center part of the umbrella fabric 71 is sandwiched and fixed between the upper wheel 33 and the chrysanthemum seat 36, and the end of the umbrella fabric 71 is tied with a thread or the like to the tip 61 provided at the end of the proximal rib 53D. This is fixed. The other parts are also fixed to the umbrella rib 51 and the auxiliary bone 55 by tying them with threads or the like.

The "other parts" of the umbrella fabric 71 attached to the umbrella ribs 51 and the auxiliary ribs 55 are the positions of the central region of the struts 52 and the positions of the arrangement regions of the first to fourth rotating shaft parts RA1 to RA4. That is.

At the central region of the strut 52, the umbrella fabric 71 is tied to the auxiliary bone 55 with a thread. At the position of the arrangement area of the first rotating shaft portion RA1, the umbrella fabric 71 is tied with a thread to the end of the original rib 53A on the inner rod 31 side. At the position of the arrangement area of the second rotating shaft portion RA2, the umbrella fabric 71 is tied with a thread to the tip side end of the original rib 53A. At the position of the arrangement area of the third rotating shaft part RA3, the umbrella fabric 71 is tied with a thread to the end of the second central rib 53C on the central rod 31 side. At the position of the arrangement area of the fourth rotating shaft portion RA4, the umbrella fabric 71 is tied with a thread to the tip side end of the second central rib 53C.

In addition, the umbrella fabric 71 is also tied to the leading rib 53D with a thread.

The above-mentioned attachment position of the umbrella fabric 71 to the skeleton structure 12 is one example, and in implementation, the umbrella fabric 71 may be attached to another part other than the above. The attachment method of tying with thread is also just one example, and other attachment methods may be employed.

As a result of attaching the umbrella fabric 71 to the umbrella rib 51 as described above, the umbrella fabric 71 is folded into six folds following the opening and closing of the umbrella rib 51. At the position of the strut 52, it is folded in half at the position of its central region, and between the first rotating shaft part RA1 and the third rotating shaft part RA3, it is folded in half at the position of the second rotating shaft part RA2. , and between the third rotating shaft portion RA3 and the tip of the leading rib 53D, it is folded in half at the position of the fourth rotating shaft portion RA4, resulting in a total of six folds.

4. Storage State As shown in FIG. 1(A), a name band 72 is fixed to the umbrella fabric 71. The name band 72 has a length and width sufficient to completely surround the skeleton structure 12 of the folded umbrella 11 and the umbrella fabric 71.

The name band 72 is provided with hook-and-loop fasteners 73 on the base side and the tip side, respectively. The two hook-and-loop fasteners 73 have one side as a loop surface and the other side as a hook surface, and can be attached to or separated from each other.

As shown in FIG. 6, the folded umbrella 11 can be maintained in the stored state by wrapping the name band 72 around it and attaching the loop surface and hook surface of the hook-and-loop fastener 73.

As shown in FIG. 7, the folding umbrella 11 in the stored state has a total length L of about 11.5 cm, for example.

5. Functions and Effects (1) Basic Functions and Effects To unfold the folding umbrella 11, the lower wheel 34 is slid in a direction approaching the upper wheel 33. Then, the strut 52 rotates inward away from the center rod 31. At this time, due to the action of the interlocking mechanism IM constituted by the first drawn line 57 and the second to fourth drawn lines 58 to 60, the original main rib 53A is moved outwardly away from the middle rod 31 to the first middle main rib. 53B is turned inward away from the original main rib 53A, the second middle main rib 53C is turned outward away from the first middle main rib 53B, and the first middle main rib 53D is turned inward away from the second middle main rib 53C. Rotate in each direction. This opens the folding umbrella 11.

To close the folding umbrella 11, the lower wheel 34 is slid in a direction away from the upper wheel 33. Then, the strut 52 rotates outward so as to approach the center rod 31. At this time, due to the action of the interlocking mechanism IM constituted by the first drawing line 57 and the second to fourth drawing lines 58 to 60, the original main rib 53A is directed inward, the first middle main rib 53B is directed outward, and the first main rib 53B is directed outward. 2, the middle rib 53C rotates inwardly, and the leading rib 53D rotates outwardly. As a result, the support ribs 52 and the outer ribs 53 (the original outer rib 53A, the first middle outer rib 53B, the second inner outer rib 53C, and the first inner outer rib 53D) constituting the umbrella rib 51 are arranged substantially parallel to the middle rod 31. state, and the folding umbrella 11 is folded.

In the folding umbrella 11 of this embodiment, since the umbrella ribs 51 are folded into five, the total length L when folded is approximately 11.5 cm (see FIG. 7).

Considering that in the case of a typical three-stage folding umbrella (see Patent Document 1), the total length L when folded exceeds 20 cm, the total length L after folding is 11.5 cm, which is extremely compact. It can be seen that it is. The total length L after folding is 11.5 cm, and its compactness is outstanding even when compared to a four-tiered folding umbrella (see Patent Documents 2 and 3), which can have a shorter overall length than a three-tiered umbrella. ing.

As a result, the folding umbrella 11 of this embodiment can be easily carried in a relatively small bag such as a handbag or side bag, or in a coat pocket.

(2) Others (a) Length of pieces According to the present embodiment, the pieces forming the umbrella rib 51 include the support rib 52, the original rib 53A, the first middle rib 53B, the second middle rib 53C, The leading ribs 53D have equal lengths. Therefore, when the umbrella rib 51 is folded, both ends of the individual pieces 52, 53A, 53B, 53C, and 53D can be aligned at the same position. This makes it possible to further shorten the total length L when folded.

(B) Shape and Material of Piece According to the present embodiment, the strut 52, the main rib 53A, and the first drawing wire 57 are formed of metal having a bent cross-sectional shape. Therefore, the rigidity of the root portion of the umbrella rib 51 that requires rigidity can be increased, and the strength required for the umbrella rib 51 can be maintained.

According to the present embodiment, the first middle rib 53B, the second middle rib 53C, and the leading rib 53D have a round rod-like cross-sectional shape that is easy to bend back. Therefore, it is possible to increase the elasticity of the tip portion of the umbrella rib 51, where bending performance is required rather than rigidity.

According to this embodiment, the auxiliary bone 55 is made of resin. Therefore, the overall weight can be reduced while maintaining sufficient strength in the umbrella rib 51.

(c) Diameter of the folding umbrella According to the present embodiment, as described above, the original main rib 53A has a bent cross-sectional shape, and a part of the second drawing line 58 is connected to the original main rib 53A. It is housed in a space S on the curved inner side. Therefore, when the folding umbrella 11 is folded and tied with the name band 72 to be in the stored state, the bulk of the second draw line 58 can be suppressed, and the diameter in the stored state can be reduced accordingly.

6. Modifications Various modifications and changes can be made in implementation.

For example, in this embodiment, each of the middle rod 31, the support rib 52, the original main rib 53A, the first middle main rib 53B, the second middle main rib 53C, and the front main rib 53D, which are the pieces forming the umbrella rib 51, is Specific length relationships, specific dimensions, shapes, and materials between the pieces are mentioned. These limitations are merely examples, and implementation does not necessarily need to be bound by these limitations.

The same applies to the umbrella fabric 71 in this regard. The material of the umbrella fabric 71 does not necessarily have to be 100% polyester, and may be made of other materials.

Further, regarding the name band 72, the shape and structure shown in FIGS. 1A and 6, and the above descriptions thereof are merely one example. In implementation, name bands 72 having various shapes and structures can be employed. For example, instead of using the hook-and-loop fastener 73, a hook button (not shown) or other fixing structure may be used for the name band 72. In addition, although FIGS. 1A and 6 show the name band 72 having a width that completely covers the entire or most part of the folded umbrella fabric 71, the size of the name band 72 is also shown as an example. It's just a simple thing. A narrower name band 72 may also be used.

All other variations and changes are permitted.

11 Folding umbrella 12 Skeletal structure 31 Middle rod 31a First pipe 31b Second pipe 31c Third pipe 31d Fourth pipe 31e Fifth pipe 31f Sixth pipe 32 Handle 33 Upper wheel 33a, 33b Parts 34 Bottom Potter's wheel 34a, 34b Parts 35 Operation button 36 Chrysanthemum seat 51 Umbrella rib 52 Receptacle 53 Main rib 53A Original main rib 53B First middle main rib 53C Second middle main rib 53D First main rib 54 Booth 55 Auxiliary bone 56A First connecting part 56B 2nd connecting part 56C 3rd connecting part 56D 4th connecting part 57 1st drawn line 58 2nd drawn line 59 3rd drawn line 60 4th drawn line 61 Tip 71 Umbrella fabric 72 Name band 73 Hook-and-loop fastener CT1-9 Connecting part IM Interlocking mechanism Gl, Gu Groove L Total length RA1 First rotating shaft part (first rotating connecting part)
RA2 Second rotating shaft section (second rotating connection section)
RA3 Third rotating shaft section (third rotating connection section)
RA4 Fourth rotating shaft section (fourth rotating connection section)
S space Wl, Wu wire

Claims (17)

A folding umbrella in which each of a plurality of umbrella ribs branching in a radial direction opens and closes in a radial direction in conjunction with an opening/closing operation in which a lower wheel is slid relative to a center rod,
Each of the umbrella ribs is divided into five pieces, connected by four rotational connecting parts, and folded into five pieces with the folding directions staggered.
Folding umbrella. The umbrella bone is
a strut rotatably attached to the lower wheel in a radial direction;
an original main bone rotatably attached to the end of the support bone via the first rotational connection part;
a first middle rib rotatably attached to the end of the original main rib via the second rotational connection part;
a second middle rib rotatably attached to the end of the first middle rib via the third rotational connection part;
a leading rib forming a fourth rotational connection part rotatably attached to the end of the second middle rib via the fourth rotational connection part;
It is equipped with
The folding umbrella according to claim 1. An auxiliary bone rotatably attached to the upper wheel in the radial direction is rotatably connected to the center portion of the support bone,
A first drawing line is spanned between the distal end portion of the auxiliary bone and the distal end side of the first rotational connection portion of the original master bone.
The folding umbrella according to claim 2. A second drawn line is spanned between the distal end side of the first drawn line and a side of the middle rod that is closer to the second rotational connecting portion of the first middle rib.
The folding umbrella according to claim 3. A third drawing line is spanned between the distal end side of the original main rib and the middle rod side of the second middle main rib with respect to the third rotational connection part,
The folding umbrella according to claim 4. A fourth drawing line is spanned between the distal end side of the first middle rib and the middle rod side of the fourth rotational connecting portion of the front rib.
The folding umbrella according to claim 5. The support rib, the original rib, the first middle rib, the second middle rib, and the leading rib each have equal lengths,
The folding umbrella according to any one of claims 2 to 6. The support rib, the original master rib, and the first drawing line are formed of metal having a bent cross-sectional shape.
The folding umbrella according to any one of claims 3 to 6. The first middle rib, the second middle rib, and the first middle rib have a round rod-like cross-sectional shape,
The folding umbrella according to claim 8. The auxiliary bone is made of resin.
The folding umbrella according to claim 9. The original rib has a bent cross-sectional shape,
A part of the second drawing line is stored in a space on the bent inner surface side of the original rib,
The folding umbrella according to claim 4. The umbrella fabric is attached to the central region of the strut and the arrangement region of the first to fourth rotational connecting portions, and is folded into six folds following opening and closing of the umbrella rib.
The folding umbrella according to any one of claims 2 to 6. The total length when folded is 11-12cm.
The folding umbrella according to any one of claims 1 to 6. A folding umbrella in which each of a plurality of umbrella ribs branching in a radial direction can be folded and closed in a radial direction,
Each of the umbrella ribs is divided into five pieces, connected by four rotational connecting parts, and folded into five pieces with the folding directions staggered.
Folding umbrella. The umbrella bone is
A bridge that is rotatably attached to the lower wheel in the radial direction,
an original main bone rotatably attached to the end of the support bone via the first rotational connection part;
a first middle rib rotatably attached to the end of the original main rib via the second rotational connection part;
a second middle rib rotatably attached to the end of the first middle rib via the third rotational connection part;
a leading rib forming a fourth rotational connection part rotatably attached to the end of the second middle rib via the fourth rotational connection part;
It is equipped with
The folding umbrella according to claim 14. The umbrella fabric is attached to the central region of the strut and the arrangement region of the first to fourth rotational connecting portions, and is folded into six folds following opening and closing of the umbrella rib.
The folding umbrella according to claim 15. The total length when folded is 11-12cm.
The folding umbrella according to any one of claims 14 to 16.

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