JP3372540B1 - Bone assembly for multistage folding umbrella - Google Patents

Abstract

Kind Code: A1 A bone assembly for a multi-fold umbrella that can serve both as a bone and as a closing spring for elastically or automatically closing the umbrella. SOLUTION: A bone assembly 2 for a multi-stage foldable umbrella includes:
Either the top bone 21 or the extension bone 22 is formed to be a lotus-shaped bone when the umbrella is opened. When the umbrella is opened, the bone 21 is curved in an arch to conserve elastic energy, and when the umbrella is closed, the bone 21 is restored to release elastic energy to automatically close the bone assembly. The bone assembly has the function of supporting the umbrella 4 on the bone and automatically closing the umbrella or assisting it even if the closure spring is removed from the bone assembly. It has a dual role as a function.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bone assembly for a multi-stage foldable umbrella, and more particularly to a bone assembly having the function of a closing spring to help close the umbrella.

[0002]

BACKGROUND OF THE INVENTION As a conventional bone assembly for a topless western umbrella, the one disclosed in Japanese Utility Model Publication No. 5-37116 is known. This bone assembly has a large number of spring pieces (18) held via a holding body (20a, 20b) between a bone receiving (designated by reference numeral "4" in the publication. The same applies hereinafter) and a bone (6). Has a complicated assembly,
There is a problem that the manufacturing cost increases.

As shown in FIG. 7 of the above publication, since the spring force of the spring piece (18) is limited, it is directed toward the outside of the joint (11) between the split bones (6a, 6b). All of the drawers will open the bone assembly easily, affecting the folding operation of the bone assembly when the umbrella is closed.

As a result of intensive studies aimed at improving the problems of the prior art, the inventors of the present invention have performed two roles: a function as a bone and a function as a closing spring for elastically or automatically closing the umbrella. Invented a bone assembly that fulfills

Therefore, the present invention provides a bone assembly for a multi-stage foldable umbrella which can serve both a function as a bone and a function as a closing spring for elastically or automatically closing the umbrella. The purpose is to do.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide the following bone assembly for a multi-stage collapsible umbrella, the bone assembly comprising a top bone pivotally mounted in an upper notch on the top of a central shaft and a top bone. An extension bone attached between the bone and a lower runner slidably held on the central shaft, an intermediate bone rotatably attached to the extension bone and the top bone, and rotatably connected to the intermediate bone It has a front bone (or an outer bone). Either the top bone or the stretched bone is formed to have a lotus-shaped bone when the umbrella is opened. The lotus-shaped bone is bowed to store elastic energy when the umbrella is opened and restores to release elastic energy energy to automatically close the bone assembly when the umbrella is closed. This allows the bone assembly to have the ability to support the umbrella on the bone and the "closed" closure that automatically closes or assists the umbrella even if the attachment of the closing spring on the bone assembly is removed. It plays a dual role as a "spring".

[0007]

The objects of the present invention are achieved by the following means.

(1) Rotation between a top bone rotatably attached to an upper notch formed at the top of the central shaft and a lower runner slidably held by the top bone and the central shaft. A freely connected extension bone, an intermediate bone rotatably connected to the extension bone and rotatably connected to the top bone via a connection bone, and rotatably connected to the intermediate bone And a front bone, and a bone assembly for a multi-stage foldable umbrella, the bone assembly including a lotus-shaped bone selected from the group including the top bone and the extension bone, and having a plurality of the lotus-shaped bones. Bone is placed around the central shaft and is elastically tensioned by an umbrella attached to the bone assembly and locked by a repellant elastically retained on the central shaft to provide elastic energy. The lotus-shaped bone is bent to form a lotus-shaped array to preserve the space, and when the repellant is pushed down to unlock the bone assembly when the umbrella is closed, the lotus-shaped bone is restored and elastic. A bone assembly for a multi-tiered foldable umbrella that is retracted to automatically close the umbrella by releasing energy.

(2) Each of the top bones includes a pair of elastic plates that are bifurcated inward from the middle portion of the extension bone toward the central shaft, and the elastic plates are formed in the upper notch. An inner end that is attached to a rotatably mounted sleeve member and an outer end that is received in the middle portion of the extension bone, the middle portion of the extension bone being the elastic portion of the top bone. The elastic plate of the top bone is rotatably connected to the outer end of the plate, and when the umbrella is opened, the elastic plate of the top bone is tensioned by the umbrella material and the bone assembly locked by the repellant to store elastic energy. To form a lotus-shaped array by bending it into a bow shape, push down the repellants to unlock the bone assembly and close the umbrella, and the elastic plate that had the lotus-shaped shape becomes flat. Source and by opening the elastic energy, multistage folding rib assembly for umbrella according to the above (1) comprising pulled to close the umbrella automatically.

(3) Each of the extension bones includes a sleeve member rotatably attached to the lower runner and a pair of elastic plates, and the elastic plates have an inner end portion attached to the sleeve member. Having two outer ends of the two elastic plates are bifurcated outward from the central shaft so that the two outer ends are attached to the intermediate portions of the respective stretched bones, and when the umbrella is opened, The elastic plate of the stretched bone is tensioned by the umbrella fabric or the bone assembly locked by the repellant, and is bent in an arc shape to store elastic energy to form a lotus-shaped array, When the umbrella is closed by pushing the repellant and unlocking the bone assembly, the lotus-shaped elastic plate is restored to a flat state and elastic energy is released to automatically open the umbrella. Multistage folding rib assembly for umbrella according to (1) retracted composed to close the.

(4) Rotation between a top bone rotatably attached to an upper notch formed on the top of the central shaft and a lower runner slidably held by the top bone and the central shaft. A freely connected extension bone, an intermediate bone rotatably connected to the top bone and rotatably connected to the extension bone via a connection bone, and rotatably connected to the intermediate bone A bone assembly for a multi-stage foldable umbrella having a tip bone rotatably connected to the top bone via a spring bone slidably connected to the intermediate bone, the top bone being A plurality of lotus-shaped bones, which are arranged around the central shaft, are provided on the central shaft when the umbrella is opened. Bullet by spring means To be energized, bent to form an array of lotus shape to store elastic energy,
When the umbrella is closed by releasing the bias of the spring means, the lotus-shaped bone is restored and elastic energy is released, so that the umbrella is retracted to automatically close the umbrella. Bone assembly.

(5) Each of the top bones includes a pair of elastic plates that are bifurcated inward from the middle portion of the top bone toward the central shaft, and the elastic plates are formed in the upper notch. An inner end portion attached to a rotatably attached sleeve member and an outer end portion inserted into the intermediate portion of the top bone, the top bone being rotatably connected to the extension bone. When the umbrella is opened, the elastic plate of the top bone is urged by the spring means to generate elastic energy. To form a lotus-shaped array by bending it in an arc shape, and when the tension of the spring means is released to close the umbrella, the lotus-shaped elastic plate is restored to a flat state and elastic. By releasing the energy, Multistage folding rib assembly for umbrella according to the item (4) retracted composed to to close.

(6) Each of the extension bones includes a sleeve member rotatably attached to the lower runner and a pair of elastic plates, each elastic plate having an inner end portion attached to the sleeve member. And two outer ends of the two elastic plates are bifurcated outward from the central shaft so as to be rotatably connected to respective intermediate portions of the top bones, When the umbrella is opened, the elastic plate of the stretched bone is urged by the spring means and bent in an arc to store elastic energy, forming a lotus-shaped array, and releasing the tension of the spring means. When the umbrella is then closed, the elastic plate, which had a lotus-shaped shape, is restored to a flat state and elastic energy is released, whereby the umbrella is retracted to automatically close the umbrella. (4) Multi-stage folding Bone assembly for umbrella.

(7) Each of the extension bones is molded from plastic, reinforced plastic or composite material, and is attached to a solid inner end portion rotatably attached to the lower runner and an intermediate portion of the top bone. A solid outer end that is movably connected, an outer part that is rotatably connected to the inner end of the connecting bone, and a recess formed along the longitudinal direction to close the umbrella. Longitudinal groove for receiving the connecting bone when the bone assembly is folded and a pair of reinforcing extensions longitudinally formed on opposite sides to enhance the mechanical strength of the stretched bone. A bone assembly for a multi-stage foldable umbrella according to (4) above, which comprises:

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a view showing an umbrella provided with a bone assembly according to the present invention in an open state, FIG. 2 is a front view showing the bone assembly shown in FIG. 1, and FIG. 3 is a top bone of the bone assembly shown in FIG. FIG. 4 is a perspective view showing the expanded bone and FIG. 4 is a perspective view showing the folded bone assembly in an inverted state.

As shown in FIGS. 1 to 3, the bone assembly 2 of the present invention is provided for a topless western umbrella or an automatically opening and closing umbrella for automatically closing the umbrella. The bone assembly 2 includes a central shaft 1, a bone assembly 2, and an umbrella material 4 attached to the bone assembly 2. The umbrella can be folded in three stages or any other multiple stages.
In the present invention, the number of folding steps is not particularly limited.

The central shaft 1 has a fixed grip 1.
It includes a lower tube 11 provided with 2, an intermediate tube 13, an upper tube 14 which is telescopically fittable with each other, and a cistern 16 which is elastically retained on the central shaft 1. Repellent 1
6 is a lower runner 2 of the bone assembly 2 when the umbrella is opened.
3 for locking and keeping the bone assembly 2 open.

The bone assembly 2 has a top bone 21 rotatably attached to an upper notch 15 formed at the top of the central shaft 1, and a lower runner 23 slidably held by the top bone 21 and the central shaft 1. An extension bone 22 rotatably connected between the extension bone 22 and an intermediate bone 24 rotatably connected to the extension bone 22 and rotatably connected to the top bone 21 via a connection bone 25; It includes a front bone (tail bone or outer bone) 26 rotatably connected to the intermediate bone 24.

Each top bone 21 includes a pair of elastic plates (or rods) 212 which are bifurcated inward from the intermediate portion 224 of the extension bone 22 toward the central shaft 1. Each elastic plate 212 has a central shaft 1
An inner end portion 212i inserted or attached to a sleeve member 213 rotatably attached to the upper notch 15 on the upper side.
And an outer end portion 212t to be inserted into the socket (or groove) of the intermediate portion 224 of the stretched bone 22. The extension bone 22 has an intermediate portion 224 that is rotatably connected to the outer end portion 212t of each elastic plate 212 in the top bone 21.

As a result, when the umbrella is opened, the elastic plate 212 of the top bone 21 is elastically tensioned by the umbrella material 4 or the bone assembly 2 of the umbrella locked by the repellant 16 on the central shaft 1 and elastic. It will be bowed or curved to store energy, forming a lotus-shaped array.

When the repellant 16 is pushed down and the runner 23 is unlocked and the umbrella is closed, the lotus-shaped elastic plate 212 is restored to a flat state to release its elastic energy and the umbrella is automatically moved. Bone assembly 2 will be retracted to be closed manually.

The connecting bone 25 is the outer portion 21 of the top bone 21.
5, the inner end 251 rotatably connected to the
And an outer end portion 252 connected to the. The sleeve member 213 can be formed from a lightweight plastic material.
The length of each top bone 21 is about half the length of the extension bone 22.

As shown in FIG. 4, when the umbrella is folded upside down, the lotus-shaped top bone 21 exerts a tension toward the central shaft 1 on the lower runner 23, and the lower runner 23 descends due to gravity. Is prevented and the already folded bone assembly 2 "relaxes"
(Open) is prevented. As a result, the respective lotus-shaped ribs 21 functioning as “closing springs” for assisting the closure of the umbrella achieve a stable folded state when the umbrella is closed. The elastic energy F of the elastic plate 212 of the top bone 21 exerts a force portion F ′ that urges the extension bone 22 and the runner 23 upward (U), and the joint between the intermediate bone 24 and the front bone 26 is removed. The runner 23 is prevented from descending (D) due to gravity even if it is pulled in the direction (R).

FIG. 5 is a front view showing a bone assembly according to another embodiment of the present invention, and FIG. 6 is a perspective view showing a top bone and an extended bone of the bone assembly shown in FIG.

The lotus-shaped bone is selected from the group including the top bone 21 and the stretched bone 22, and the top bone 21 was selected in the previous embodiment, but in this embodiment, the stretched bone 22 is selected.
Is selected, and the extension bone 22 is configured to be a lotus-shaped bone.

As shown in FIGS. 5 and 6, the lotus-shaped bone is changed from the top bone 21 to the extension bone 22.
The top bone 21 includes an inner end 213a rotatably attached to the upper notch 15 on the central shaft 1, and an extension bone 22.
The outermost end portion 214a is rotatably connected to the intermediate portion 224, and the outer end portion 215 is rotatably connected to the inner end portion 251 of the connecting bone 25. The extension bone 22 is
It has an outer end 222 that is rotatably connected to the intermediate bone 24.

Each stretched bone 22 has a central shaft 1
It includes a sleeve member 221a rotatably attached to a lower runner 23 slidably held by a pair of elastic plates (or rods) 220. Elastic plate 220
Has an inner end portion 221 that is inserted into or attached to the sleeve member 221a, and two outer end portions 220t of the two elastic plates 220 are inserted into the sockets (or recesses) 224a of the intermediate portions 224 of the respective extension bones 22. Or bifurcated outwards from the central shaft 1 for mounting. The intermediate portion 224 of the extension bone 22 can be formed as a recess for receiving the outermost end portion 214a of the top bone 21 and rotatably connecting the end portion 214a.

Thus, when the umbrella is opened, the elastic plate 220 of the stretched bone 22 is tensioned by the umbrella fabric 4 and the bone assembly 2 locked by the repellant 16 to preserve the elasticity of the elastic plate 220. It is curved or bent in an arc to form a lotus-shaped array.

When the repellant 16 on the central shaft 1 is pushed down to unlock the bone assembly 2 and the umbrella is closed,
The elastic plate 220, which was in the shape of a lotus flower, will return to its flat state to release its elastic energy and retract the bone assembly 2 to automatically close the umbrella.

FIG. 7 is a view showing an umbrella with a bone assembly according to another embodiment of the present invention in an open state, and FIG.
7 is a partial cross-sectional view showing the opened bone assembly shown in FIG. 7, FIG. 9 is a perspective view showing the top bone of the bone assembly shown in FIG. 8, and FIG. 10 is a bone assembly taken in the direction of arrow 10-10 in FIG. FIG. 11 is a perspective view showing the lower surface side of the expanded bone of FIG. 11, and FIG. 11 is a sectional view of FIG.

As shown in FIGS. 7 to 11, the bone assembly 2 of the present invention can be provided for an automatic opening and closing umbrella that automatically opens and closes the umbrella. This automatic opening / closing umbrella includes a central shaft 1, a bone assembly 2, an opening spring 3 (corresponding to spring means) attached to the central shaft 1 for opening the umbrella, and an umbrella material 4 attached to the bone assembly 2. , And a control device 5 for controlling opening and closing of the umbrella. The umbrella can be folded in three levels or any other multiple levels,
In the present invention, the number of folding steps is not particularly limited.

The central shaft 1 comprises a lower tube 11 with a grip 12 fixed for mounting the main part of the control device 5, an intermediate tube 13 and an upper tube 14 telescopically interfittable. I'm out. The control device 5 is a general mechanism for appropriately opening and closing the umbrella, and thus detailed description thereof will be omitted.

The bone assembly 2 includes a top bone 21 rotatably attached to an upper notch 15 formed at the top of the central shaft 1, and a lower runner 23 slidably held by the top bone 21 and the central shaft 1. An extension bone 22 that is rotatably connected to the top bone 21, and an intermediate bone 24 that is rotatably connected to the top bone 21 and rotatably connected to the extension bone 22 via a connection bone 25; It includes a front bone (tail bone or outer bone) 26 that is rotatably connected to the intermediate bone 24 via a joint 28 and is also rotatably connected to a spring bone 27. The spring bone 27 is slidably connected to the intermediate bone 24 by a coupling ring 240 and is rotatably attached to the top bone 21.

Each top bone 21 is a pair of elastic plates (or rods) 21 which are bifurcated inward from the middle portion 211 of the top bone 21 toward the central shaft 1.
Includes 2. Each elastic plate 212 is inserted into or attached to a sleeve member 213 that is rotatably attached to the upper notch 15 on the central shaft 1 and is attached to the inner end portion 2.
12i and the socket 21 of the middle part 211 of the top bone 21
1a and an outer end portion 212t that is inserted or attached. The top bone 21 has an intermediate portion 211 that is rotatably connected to the extension bone 22 and an outer end portion 214 that is rotatably connected to the intermediate bone 24.

As a result, when the umbrella is opened, the elastic plate 212 of the top bone 21 is biased by the opening spring 3 of the umbrella and is bent or curved in an arc shape to store elastic energy. Will form an array.

When the tension of the opening spring 3 is released and the umbrella is closed, the lotus-shaped elastic plate 212 is restored to a flat state to release its elastic energy and the umbrella is automatically closed. This will cause the bone assembly 2 to be retracted.

By the way, the "closing spring" provided in a general automatic opening / closing umbrella is eliminated in the present invention. Further, each lotus-shaped bone (the top bone 21 having the elastic plate 212) has a function of supporting the umbrella fabric 4 and a function as a “closing spring” for automatically closing the umbrella from the opened state. It plays two roles. Once the umbrella is closed, elastic energy from the lotus-shaped bone will tension the lower runner 23 towards the central shaft 1 to keep the bone in a stable fold without being easily opened.

The intermediate bone 24 has an inner end 241 rotatably attached to the top bone 21, and an outer end 243 rotatably attached to a joint 28 attached to the front bone 26. .

The spring bone 27 is adjacent to the outermost end portion 214 of the top bone 21, and the outer portion 21 of the top bone 21.
5 has an inner end portion 271 rotatably connected to the joint 5, and an outer end portion 272 rotatably connected to the joint 28 of the front bone 26.

The connecting bone 25 is the outer portion 223 of the extension bone 22.
An inner end 251 formed in a ring rotatably attached to the inner bone 251 and an outer end 252 formed in a ring rotatably connected to an innermost end 242 of the intermediate bone 24. There is. The connecting bone 25 can be formed as a spring rod.

The stretch bone 22 may be molded from plastic, reinforced plastic or composite material. Stretched bone 22
Is a solid or solid inner end portion 221 rotatably attached to the lower runner 23, and an intermediate portion 2 of the top bone 21.
11, a solid outer end portion 222 that is rotatably connected to the outer shell 223, and an outer portion 223 that is rotatably connected to the inner end portion 251 of the connecting bone 25 (FIGS. 8 and 10). A longitudinal groove 224 for receiving the connecting bones 25 when the umbrella is closed and the bone assembly 2 is folded, and the opposing of the extension bones 22 for strengthening the mechanical strength of the extension bones 22. And a pair of reinforced extension portions 225 formed along the longitudinal direction on the sides.

To reduce the material used, a recess 226 can be formed in the expanded bone 22 opposite the longitudinal groove 224, as shown in phantom in FIG.

Of course, the material for forming the bone of bone assembly 2 is not limited in the present invention. While plastic bones provide good mechanical strength, aluminum alloys are lightweight and either of them can be chosen arbitrarily in the present invention.

As shown in FIG. 7, all pairs of elastic plates 212 of the top bone 21 form lotus petals upon opening the umbrella. This petal has two adjacent elastic plates 2 branching outward from the upper notch 15 of the central shaft 1.
12 having two inner ends 212i and then converging at an intermediate portion 211 of the top bone 21 respectively 2
It has two outer ends 212t of two adjacent elastic plates 212. This will result in the formation of a lotus flower when the umbrella is opened in order to store the elastic energy of the top bone 21 adapted to be used for the next closing or folding operation.

"Petals" (pair of elastic plates 212)
Has a length generally equal to about 1/6 of the radius of the bone assembly 2 or umbrella 4 when the umbrella is open. The elastic plates 212 can even be made of steel plates, and since the length of each elastic plate 212 of the top bone 21 is only about 1/6 of the radius of the open umbrella, it is made of steel plates. However, the weight of the bone assembly 2 does not increase.

However, the present invention reduces manufacturing costs because it eliminates the need for many "closing springs" on the bone assembly that were required in conventional self-closing umbrellas.

FIG. 12 is a partial sectional view showing a bone assembly according to still another embodiment of the present invention, and FIG.
3 is a perspective view showing a top bone and an extension bone of the bone assembly of FIG.

As shown in FIGS. 12 and 13, the lotus-shaped bone of the bone assembly is composed of the top bone and the extended bone 2.
It has been changed to 2.

Each stretched bone 22 has a central shaft 1
It includes a sleeve member 221a rotatably attached to a lower runner 23 slidably held by a pair of elastic plates (or rods) 220. Elastic plate 220
Has an inner end portion 221 that is inserted into or attached to the sleeve member 221a so that the two outer end portions 222 of the two elastic plates 220 are rotatably connected to the middle portion 211 of each top bone 21. , It is divided into two forks outward from the central shaft 1. Middle part 2 of the top bone 21
11 can be formed in a socket or a recess for receiving and rotatably connecting each outer end 222 of each elastic plate 220 of each extension bone 22.

As a result, when the umbrella is opened, the elastic plate 220 of the stretched bone 22 is biased by the opening spring 3 provided on the central shaft 1 and bent or curved in an arc shape to store elastic energy. Form a lotus-shaped array.

When the tension of the opening spring 3 is released and the umbrella is closed, the lotus-shaped elastic plate 220 is restored to a flat state to release its elastic energy and the umbrella is automatically closed. This will cause the bone assembly 2 to be retracted.

Each extension bone 22 is the outermost end 2 rotatably connected to the intermediate portion 211 of the top bone 21.
22 and an outer part 223 rotatably connected to the inner end 251 of the connecting bone 25.

The sleeve member 221a can be made of a lightweight plastic material. Stretched bone 2
The length of 2 is approximately equal to 1/6 of the radius of the open bone assembly 2 or umbrella 4. The extension bones 22 each have a length approximately equal to about half the length of the top bone 21 (FIG. 12).

Each elastic plate 220 (or 21)
2) can be made of elastic material including steel or elastic plastic.

Sleeve member 221a (or 213)
Can also be removed by pivotally connecting the inner end of each stretched bone (or top bone) directly to the runner 23 (or notch 15).

[0057]

As described above, according to the present invention, a multi-stage foldable type that can perform two functions, that is, a function as a bone and a function as a closing spring for elastically or automatically closing the umbrella. A bone assembly for the umbrella could be provided.

[Brief description of drawings]

FIG. 1 shows the umbrella with the bone assembly according to the invention in the open position.

2 is a front view of the bone assembly of FIG. 1. FIG.

3 is a perspective view showing the top and extension bones of the bone assembly of FIG. 2. FIG.

FIG. 4 is a perspective view showing the folded bone assembly upside down.

FIG. 5 is a front view showing a bone assembly according to another embodiment of the present invention.

FIG. 6 is a perspective view showing a top bone and an extension bone of the bone assembly of FIG.

FIG. 7 is an open view of an umbrella with a bone assembly according to yet another embodiment of the present invention.

8 is a partial cross-sectional view of the opened bone assembly of FIG. 7.

9 is a perspective view showing a top bone of the bone assembly of FIG. 8. FIG.

FIG. 10 is a perspective view showing the lower surface side of the extension bone of the bone assembly as seen from the direction of arrow 10-10 in FIG.

11 is a cross-sectional view of FIG.

FIG. 12 is a partial cross-sectional view showing a bone assembly according to still another embodiment of the present invention.

FIG. 13 is a perspective view showing a top bone and an extension bone of the bone assembly of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Central shaft 2 ... Bone assembly 3 ... Spring for opening (spring means) 4 ... Umbrella 15 ... Upper notch 16 ... Replacing 21 ... Top bone (lotus-shaped bone) 211 ... Middle part 212 of top bone ... Top bone Elastic plate 212i ... inner end 212t of elastic plate ... outer end 213 of elastic plate ... sleeve member 214 of top bone ... outer end 22 of top bone ... stretched bone (bone showing lotus flower shape) 220 ... stretched bone Elastic plate 221 ... Inner end 220t of elastic plate ... Outer end 222 of elastic plate ... Outer end 221a of elastic plate ... Sleeve member 224 of expanded bone ... Intermediate part 221, 222, 223 of expanded bone ... Inside expanded bone Inner end of solid, outer end of solid, outer part 224 ... Longitudinal groove 225 of expanded bone ... Reinforced extension part 23 of expanded bone ... Lower runner 24 ... Intermediate bone 25 ... Connecting bone 251 ... Inner end of connecting bone Part 26 ... Front bone 27 ... Spuri Grayed bone

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-53-46846 (JP, A) JP-A-61-272003 (JP, A) Actually open 2-116816 (JP, U) Actually open 58- 129810 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) A45B 19/10

Claims (7)

(57) [Claims] 1. A top bone (21) rotatably attached to an upper notch (15) formed at the top of the central shaft (1), and a slide on the top bone (21) and the central shaft (1). An extension bone (22) that is rotatably connected to a lower runner (23) that is movably held; and a connection bone (25) that is rotatably connected to the extension bone (22). An intermediate bone (24) that is rotatably connected to the top bone (21) via a front bone (2) that is rotatably connected to the intermediate bone (24).
6) and a bone assembly (2) for a multi-stage foldable umbrella, comprising a lotus-shaped bone selected from the group including the top bone (21) and the extension bone (22), A large number of said lotus-shaped bones are arranged around said central shaft (1) and elastically tensioned by an umbrella fabric (4) attached to said bone assembly so that said central shaft (1) Repelling elastically held (1
6) is locked by 6) and bent to form a lotus-shaped array to store elastic energy, and the repellant (16) is unlocked to unlock the bone assembly when the umbrella is closed. When pushed down, the lotus-shaped bone is restored to release elastic energy, and is retracted so as to automatically close the umbrella. 2. A pair of elastic plates (2), each top bone (21) is bifurcated inward from an intermediate portion (224) of the extension bone (22) toward the central shaft (1). 212), and the elastic plate (212) includes an inner end (212i) attached to a sleeve member (213) rotatably attached to the upper notch (15), and the stretched bone (22). An outer end (212) received in the middle section (224).
t), the intermediate portion (224) of the extension bone (22) is rotatably connected to an outer end portion (212t) of the elastic plate (212) of the top bone (21), When the umbrella is opened, the elastic plate (21) of the top bone (21) is opened.
2) is tensioned by the umbrella fabric (4) locked by the repellant (16) and the bone assembly, and is bent in an arc shape to store elastic energy to form a lotus-shaped array, When the repellant (16) is pushed down to unlock the bone assembly and the umbrella is closed, the lotus-shaped elastic plate (212) is restored to a flat state to release elastic energy. The bone assembly for a multi-fold foldable umbrella according to claim 1, wherein the bone assembly is retracted for automatic closing. 3. Each elastic bone (22) includes a sleeve member (221a) rotatably attached to the lower runner (23) and a pair of elastic plates (220). 220) is the sleeve member (221)
a) having an inner end (221) attached to it, and two outer ends (220t) of the two elastic plates (220) attached to the middle part (224) of each of the stretched bones (22). Thus, the elastic plate (22) of the stretched bone (22) is formed by bifurcating outward from the central shaft (1) and opening the umbrella.
0) is tensioned by the umbrella fabric (4) locked by the repellant (16) and the bone assembly, and is bent in an arc to store elastic energy to form a lotus-shaped array, When the repellant (16) is pushed down and the bone assembly is unlocked and the umbrella is closed, the lotus-shaped elastic plate (220) is restored to a flat state to release elastic energy. The bone assembly for a multi-fold foldable umbrella according to claim 1, wherein the bone assembly is retracted for automatic closing. 4. A top bone (21) rotatably attached to an upper notch (15) formed at the top of the central shaft (1), and sliding onto the top bone (21) and the central shaft (1). An extension bone (22) that is rotatably connected to a lower runner (23) that is movably held; and a connection bone (25) that is rotatably connected to the top bone (21). An intermediate bone (24) that is rotatably connected to the extension bone (22) via the intermediate bone (24), and is rotatably connected to the intermediate bone (24) and is slidably connected to the intermediate bone (24). Spring Bone (27)
A bone assembly (2) for a multi-stage collapsible umbrella having a tip bone (26) rotatably connected to the top bone (21) via the top bone (21) and the extension. A lotus-shaped bone selected from the group including a bone (22), wherein a plurality of the lotus-shaped bones are arranged around the central shaft (1) and the central shaft is opened when the umbrella is opened. It is elastically biased by the spring means (3) provided in (1) and is bent so as to form a lotus-shaped array for storing elastic energy, and the bias by the spring means (3) is released. When the umbrella is closed, the lotus-shaped bone is restored to release elastic energy, so that the umbrella is retracted to automatically close the umbrella. 5. A pair of elastic plates (2) bifurcated inwardly from each intermediate portion (211) of the top bone (21) toward the central shaft (1). 212), and the elastic plate (212) includes an inner end (212i) attached to a sleeve member (213) rotatably attached to the upper notch (15), and the top bone (21).
An outer end portion (212) inserted into the intermediate portion (211) of
t), the top bone (21) is rotatably connected to the intermediate bone (24) and the intermediate portion (211) that is rotatably connected to the extension bone (22). The elastic plate (21) of the top bone (21) when the umbrella is opened.
2) is biased by the spring means (3),
In order to store elastic energy, it is bent in an arc to form a lotus-shaped array, and when the tension of the spring means (3) is released to close the umbrella, the lotus-shaped elastic plate (212) is removed. The bone assembly for a multi-fold collapsible umbrella according to claim 4, wherein the umbrella is retracted to automatically close the umbrella by returning to a flat state and releasing elastic energy. 6. The elastic bones (22) each include a sleeve member (221a) rotatably attached to the lower runner (23) and a pair of elastic plates (220). 220) is the sleeve member (221)
a) having an inner end (221) attached to it, two outer ends (222) of the two elastic plates (220) pivot to the middle part (211) of each top bone (21). It is bifurcated outward from the central shaft (1) so as to be freely connected, and when the umbrella is opened, the elastic plate (22) of the stretched bone (22) is opened.
0) is biased by the spring means (3),
In order to store elastic energy, the elastic plate (220) having a lotus flower shape is formed by forming a lotus flower-shaped array by bending in an arc shape and releasing the tension of the spring means (3) to close the umbrella. Is restored to a flat state and the elastic energy is released,
The bone assembly for a multi-fold foldable umbrella according to claim 4, wherein the bone assembly is retracted to automatically close the umbrella. 7. Each solid bone (22) is molded from plastic, reinforced plastic or composite material and has a solid inner end (221) rotatably attached to the lower runner (23). A solid outer end (222) rotatably connected to the middle part (211) of the top bone (21) and a solid outer end (222) rotatably connected to the inner end (251) of the connecting bone (25). A lateral groove (223) and a recess formed along the longitudinal direction for receiving the connecting bone (25) when closing the umbrella and folding the bone assembly (2). 224) and a pair of strengthening extensions (225) longitudinally formed on opposite sides to strengthen the mechanical strength of the stretched bone (22). A bone assembly for a multi-stage foldable umbrella as described.