AN EFFORTLESS UNFOLDING STRUCTURE OF SUNSHADE UMBRELLA

MECANISME ECONOMISANT DU TRAVAIL POUR DEPLIER UN ABAT-JOUR

English Abstract

Disclosed in the present invention is a laborsaving mechanism for unfolding a sunshade, which comprises a cantilever (1), a drawstring (2), an elastic member (3), and a fixing block (4). The drawstring (2) is provided with a first end (21) threading through the end surface (11) of the cantilever, and a second end (22) fastened to the fixing block (4). The second end, the elastic member, and the fixing block is located in the cantilever. The elastic member is located between, and abutted respectively on the end face of the cantilever and the fixed block. The elastic member is a spring which surrounded the drawstring. The fixing block is an end face clip. The laborsaving mechanism also comprises a drawstring support (5), a diagonal rod fixing block (6), and a locking plated (7).The drawstring support is partly encircled by the first end, and is set on the diagonal rod fixing block, to which the first end is fastened. The diagonal rod fixing block is fastened to the pillar of the sunshade by the locking platen. The laborsaving mechanism has the advantages of simple structure, laborsaving unfolding, and never affecting the overall appearance.

French Abstract

La présente invention porte sur un mécanisme économisant du travail pour déplier un abat-jour, lequel mécanisme comprend un porte-à-faux (1), un cordon de traction (2), un élément élastique (3) et un bloc de fixation (4). La tige de traction (2) comporte une première extrémité (21) enfilée à travers la surface d'extrémité (11) du porte-à-faux, et une seconde extrémité (22) fixée au bloc de fixation (4). La seconde extrémité, l'élément élastique et le bloc de fixation sont situés dans le porte-à-faux. L'élément élastique est disposé entre la face d'extrémité du porte-à-faux et le bloc fixe, et bute, respectivement, sur ceux-ci. L'élément élastique est un ressort qui entoure le cordon de traction. Le bloc de fixation est une attache de face d'extrémité. Le mécanisme d'économie de travail comprend également un support de cordon de traction (5), un bloc de fixation de tige en diagonale (6), et un plateau de verrouillage (7). Le support de cordon de traction est partiellement encerclé par la première extrémité, et est disposé sur le bloc de fixation de tige en diagonale, sur lequel est fixée la première extrémité. Le bloc de fixation de tige en diagonale est fixé au pilier de l'abat-jour par le plateau de verrouillage. Le mécanisme d'économie de travail a pour avantages une structure simple, un dépliage à économie de travail, et le fait qu'il n'affecte jamais l'aspect global.

Claims

Claims
1. An effortless unfolding structure of sunshade umbrella, comprising a
cantilever, a pulling
rope, an elastic component and a fixing block; wherein, said pulling rope
comprises a first end
part and a second end part; said second end part, said elastic component and
said fixing block all
arranged inside said cantilever; said first end part threads the end face of
said cantilever; said
second end part is fixed to said fixing block; said elastic component is
arranged between the end
face of said cantilever and said fixing block with its two ends resisting
against the end face of
said cantilever and said fixing block respectively.
2. The effortless unfolding structure of sunshade umbrella according to claim
1, wherein
said elastic component is a spring and said spring sleeves outside said
pulling rope.
3. The effortless unfolding structure of sunshade umbrellas according to claim
1, wherein
said fixing block is an end face snap-fit piece.
4. The effortless unfolding structure of sunshade umbrellas according to claim
3, wherein
said pulling rope is a steel wire rope, and said end face snap-fit piece is
applied for the steel wire
rope.
5. The effortless unfolding structure of sunshade umbrella according to claim
1, wherein the
effortless unfolding structure of sunshade umbrella also comprises a bearing
component for the
pulling rope, and said first end part winds part of said bearing component for
the pulling rope.
6. The effortless unfolding structure of sunshade umbrella according to claim
5, wherein
said bearing component for the pulling rope is a bearing block with a groove,
and said first end
part winds part of said groove.
7. The effortless unfolding structure of sunshade umbrella according to claim
5, wherein the
effortless unfolding structure of sunshade umbrella also comprises a fixing
block for the oblique
rods; said bearing component for the pulling rope is mounted on the fixing
block for the oblique
rods, and said first end part is fixed on said fixing block for the oblique
rods.
8. The effortless unfolding structure of sunshade umbrella according to claim
7, said
bearing component for the pulling rope and said fixing block for the oblique
rods are integrally
formed.
9. The effortless unfolding structure of sunshade umbrella according to claim
7, wherein the
effortless unfolding structure of sunshade umbrella also comprises a locking
plate, and said
fixing block for the oblique rods is fixed on the post of the sunshade
umbrella by means of said
locking plate.
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Description

CA 02842708 2014-01-22
An Effortless Unfolding Structure of Sunshade Umbrella
Field of Technology
The present invention relates to the technical field of umbrellas,
particularly to the technical
field of sunshade umbrellas, and more particularly to an effortless unfolding
structure of
sunshade umbrella which facilitates to unfold the umbrella in a labor-saving
way.
Description of the Prior Art
Nowadays, sunshade umbrellas can be seen everywhere. Some types of the
sunshade
umbrellas have effortless unfolding structures, while similar existing
products on the market are
all provided with external gas springs to achieve the effortless unfolding of
the umbrellas. The
drawback of these products lies in the destroyed overall appearance, the high
cost and being
subjected to the limitation of gas springs. Moreover, the Chinese patent ZL
97249802.8 has
disclosed an elastic pipe clip for umbrella rib, which could clamp onto the
umbrella rib and hinge
with branching ribs, and on which springs mounted resists against the
branching ribs. Thus while
opening the umbrella with such elastic pipe clip, the branching ribs receive
release force from
spring and stretch out for unfolding the umbrella in a quick and effortless
way. But the drawback
of harm in the whole appearance also exists in this structure.
Thus, in order to solve the abovementioned problems and drawbacks, an
effortless
unfolding structure of sunshade umbrellas needs to be provided. It is
effortless to unfold the
umbrella and the whole appearance will not be affected.
Summary of the Invention
The object of the present invention is to provide an effortless unfolding
structure of
sunshade umbrella for overcoming above drawbacks in prior art. The effortless
unfolding
structure of sunshade umbrella is ingeniously designed, concise in structure
and can facilitate to
open umbrella in a labor saving way. Also, the whole appearance will not be
affected and it is
appropriate to be promoted and applied on a large scale.
In order to achieve the abovementioned object, the present invention provides
an effortless
unfolding structure of sunshade umbrella comprising a cantilever, a pulling
rope, an elastic
component and a fixing block, wherein pulling rope comprises a first end part
and a second end
part. Said second end part, said elastic component and said fixing block are
all arranged inside
said cantilever. Said first end part passes through the end face of said
cantilever and said second

CA 02842708 2014-01-22
end part is fixed to said fixing block. Said elastic component is arranged
between the end face of
said cantilever and said fixing block with its two ends resisting against the
end face of said
cantilever and said fixing block respectively.
Preferably, said elastic component is a spring and said spring sleeves outside
said pulling
rope.
Preferably, said fixing block is an end face snap-fit piece.
More preferably, said pulling rope is a steel wire rope, and said end face
snap-fit piece is
applied for the steel wire rope.
Preferably, the effortless unfolding structure of sunshade umbrellas also
comprises a bearing
component for the pulling rope, and said first end part winds part of said
bearing component for
the pulling rope.
More preferably, said bearing component for the pulling rope is a bearing
block with a
groove, and said first end part winds part of said groove.
More preferably, the effortless unfolding structure of sunshade umbrellas also
comprises a
fixing block for the oblique rods. Said bearing component for the pulling rope
is mounted on the
fixing block for the oblique rods, and said first end part is fixed on said
fixing block for the
oblique rods.
Further, said bearing component for the pulling rope and said fixing block for
the oblique
rods are integrally formed.
Further, the effortless unfolding structure of sunshade umbrellas also
comprises a locking
plate. Said fixing block for the oblique rods is fixed on the post of the
sunshade umbrella by
means of said locking block.
The advantages of the present invention lie in: the effortless unfolding
structure of sunshade
umbrellas of the present invention comprises a cantilever, a pulling rope, an
elastic component
and a fixing block; said pulling rope comprises a first end part and a second
end part; said second
end part, said elastic component and said fixing block are all arranged inside
said cantilever; said
first end part threads through the end face of said cantilever and said second
end part is fixed to
said fixing block; said elastic component is arranged between the end face of
said cantilever and
said fixing block with its two ends resisting against the end face of said
cantilever and said fixing
block respectively; during the installation, The cantilever is mounted between
the two oblique
rods which support the umbrella frame; the first end part of the pulling rope
is mounted on the
post of the sunshade umbrella, and thus making use of the relative movement of
the oblique rods
relative to the post; the pulling rope pulls the fixing block to compress the
elastic component for
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CA 02842708 2014-01-22
storing energy to unfold the umbrella. It is ingeniously designed, concise in
structure and can
facilitate to open umbrella in a labor saving way; also the whole appearance
will not be affected
and it is appropriate to be promoted and applied on a large scale.
Brief Description of the Drawings
Fig.1 is a partial exploded perspective view showing the assembly of
connection between
the post and the oblique rod in one embodiment of the present invention.
Fig.2 is the partial cross sectional view showing connection between the post
and the
oblique rod in the embodiment illustrated in Fig. 1.
Fig.3 is another partial cross sectional view showing connection between the
post and the
oblique rod in the embodiment illustrated in Fig. 1.
Detailed Description of the Preferred Embodiment
In order to understand the technical content of the present invention more
clearly, the
following embodiments is exemplified to be described in details. It should be
understood that the
embodiment should be considered as illustrative rather than restrictive.
Please refer to Fig.1 to Fig.3, the effortless unfolding structure of sunshade
umbrella of the
present invention comprises a cantilever 1, a pulling rope 2, an elastic
component 3 and a fixing
block 4. Said pulling rope 2 comprises a first end part 21 and a second end
part 22. The said
second end part 22, the said elastic component 3 and the said fixing block 4
are all arranged
inside the said cantilever 1. The said first end part 21 threads the end face
11 of the said
cantilever 1. The second end part 22 is fixed to the said fixing block 4. Said
elastic component 3
is mounted between the end face llof the said cantilever 1 with its two ends
resisting against the
end face 11 of the cantilever 1 and the said fixing block 4 respectively.
The elastic component 3 can be any appropriate component. Please refer to
Fig.1 to Fig.3,
in the embodiment of the present invention, the elastic component 3 is a
spring and the said
spring sleeves outside said pulling rope 2.
Said fixing block 4 can be any appropriate component. Preferably, the said
fixing block 4 is
an end face snap-fit piece. Please refer to Fig.1 to Fig. 3, in the embodiment
of the present
invention, said pulling rope 2 is a steel wire rope and said end face snap-fit
piece is an end face
snap-fit piece for a steel wire rope. The steel wire rope is snapped in the
end face snap-fit piece.
In order to facilitate the pulling rope 2 to displace relative to the
cantilever 1, preferably,
said effortless unfolding structure of sunshade umbrella also comprises a
bearing component 5
3

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for the pulling rope. The said first end part 21 winds part of the said
bearing component 5. Said
bearing component 5 can be of any appropriate structure. Please refer to Fig.1
to Fig.3, in the
embodiment of the present invention, said bearing component for the pulling
rope 5 is a bearing
block with a groove, and the first end part 21 winds part of said groove.
The oblique rod 10 of the sunshade umbrella can be fixed to the post 20 by any
appropriate
ways. Preferably, the said effortless unfolding structure of sunshade umbrella
also comprises a
fixing block 6 for the oblique rods. Said bearing component 5 for the pulling
rope is mounted on
the said fixing block 6 for the oblique rod. Said first end pat 21 is fixed on
the said fixing block 6
for the oblique rods. The oblique rods 10 are pivotally connected with the
fixing block 6 and the
fixing block 6 is fixed on the post 20.
Said bearing component 5 for the pulling rope can be mounted on said fixing
block 6 for the
oblique rod; or otherwise, said bearing component 5 for the pulling rope and
said fixing block 6
for the oblique rods can be formed integrally. Please refer to Fig.1 to Fig.3,
in the embodiment of
the present model utility, the bearing block 5 with the groove and said fixing
block 6 for the
oblique rods are formed integrally. That is to say, the groove is actually a
protruded groove of the
fixing block 6 for the oblique rods and preferably has a gradual changing
diameter.
Said fixing block 6 for the oblique rods can be fixed to the post 20 of the
sunshade umbrella
in any appropriate structures. Please refer to the Fig.1 to Fig.3, in the
embodiment of the present
invention, said effortless unfolding structure of sunshade umbrellas also
comprises a locking
plate 7. Said fixing block 6 for the oblique rods is fixed to the post 20 of
the sunshade umbrella
by means of the said locking plate '7. The oblique rods 10 are pivotally
connected with the fixing
block 6 for the oblique rods by means of a connecting head 30.
Refer to Fig.1, during the installation the cantileverl is mounted between the
two oblique
rods 10 which support the umbrella fame. The first end part 21 of the pulling
rope 2 winds the
groove and is mounted on the fixing block 6 for the oblique rod. The fixing
block 6 for the
oblique rod is fixed to the post 20 of the sunshade umbrella by means of the
said locking plate 7,
for example locking screw.
Refer to Fig.2, it is an unfolding status of the umbrella. The spring inside
the cantilever 1 is
in its initial status which can be considered that there is no compressive
force. Refer to Fig.3, it is
an folding status of the umbrella. Since the length of the wire steel rope
won't change, and as the
oblique rods 10 rotate downwards and inwards relative to the post 20, the more
of the wire steel
rope will wind the groove. For example, the steel wire rope in Fig.3 wind
almost a quarter of the
groove, and thus the difference in size is produced. The steel wire rope makes
the end face
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CA 02842708 2014-01-22
snap-fit piece compress the spring to produce a reactive force against the
folding action.
However, the rebound force of the spring is less than the force that is needed
to unfold the
umbrella, so that the umbrella can be folded successfully. In reverse, when
the umbrella is
unfolded, this rebound force will facilitate to unfold the umbrella
effortlessly. The specific
process is that the spring elongates to make the end face snap-fit piece for
the steel wire rope
acting on the cantilever internally, which makes the oblique rods unfolded.
To sum up, the effortless unfolding structure of sunshade umbrella is
ingeniously designed,
concise in structure, and can facilitate to open umbrella in a labor saving
way. The overall
appearance will not be damaged. It is suitable to be promoted and applied on a
large scale.
In this specification, the present invention has been described with reference
to its specific
embodiments. However, it is obvious still that modifications and alterations
may be made
without departing from the spirit and scope of the present invention.
Accordingly, the
specification and the drawings should be considered as illustrative rather
than restrictive.
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Representative Drawing