JP2003289925A - Rod structure of folding umbrella - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the rod structure of a folding umbrella which makes the rod parts of the folding umbrella extensible by four stages or more by making a spring piece and an engaging member to be engaged between rod parts when extending the rod parts short. <P>SOLUTION: In rod part structure of the folding umbrella where the rod structure of the folding umbrella is nested by four stages or more, a supporting part piece 53 is fitted to the inner lower side of a hollow rod part 20 of the highest stage; a long hole 52 extending in an axial direction is formed on the side surface of this hollow rod part, a narrow-width slit 54 opening at a side face position aligned with the long hole 52 is bored in an axial direction at the supporting part piece 53, a spring piece 51 the upper side of which is formed as an enlarged head part is inserted into the slit 54, this head part is made to be retractable from the opening and the long hole 52, and a means 57 for energizing the head part constantly outward is provided between the spring piece 51 and the supporting part piece 53. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft portion structure in which a shaft portion of a folding umbrella is a nesting type having four or more stages.

[0002]

2. Description of the Related Art A conventional folding umbrella has three steps even if it has many steps.
It is a stepped type, and its shaft (shaft) is composed of an uppermost stage shaft portion to which a cissing means is attached, a middle stage shaft portion, and a lowermost stage shaft portion to which a handle portion is attached. The attachment structure of the cissing means on the uppermost shaft portion will be described with reference to FIG. 5. The hollow uppermost shaft portion 1 is provided with a first slit 2 having a length of about 2 cm along the longitudinal direction. The first small hole 3 is formed at a position separated by about 3.5 cm downward from the slit. The cissing part 4 is made of a relatively thin plate material, and comprises an enlarged head 4a, an intermediate elongated part 4b and a "dogleg" bent part 4c. The cissing part 4 is located below the hollow uppermost shaft part 1. When pushed in, the cissing piece is pushed in while being elastically deformed at the V-shaped bent portion 4c, the head 4a of the cissing piece projects outward from the slit 2 and the lower end 4d of the V-shaped bent portion 4c. Engage with the small holes 3 to elastically fix the cissing piece 4.

A second small hole 5 is formed on a side surface opposite to the shaft portion at a position slightly lower than the small hole of the uppermost shaft, and a second small hole 5 is formed below the small hole and near the lower end of the shaft portion. The slit 6 is formed. The second small hole 5 and the second slit 6 have an upward V-shaped bent portion 7a and a triangular convex portion 7 at the lower end.
The engaging piece 7 having b is engaged in the same manner as the cissing piece, and the tip of the triangular convex portion projects outward from the second slit.

A third slit 9 is formed in the vicinity of the upper end of the middle shaft portion 8 into which the uppermost shaft portion 1 is slidably fitted, and in this fitted state, the second slit 6 and the third slit 9 are formed. The triangular projection 7b of the engaging piece 7 is projected outward through both slits at a position where is matched, and the uppermost stage shaft portion 1 is fixed so as not to slide with respect to the intermediate shaft portion 8.

A fourth small hole 10 is provided in the vicinity of the lower end of the middle shaft portion 8.
A narrow leaf spring 11 formed in a mountain shape is inserted into the middle shaft portion in which the small hole 10 is drilled so as to compress the hem of the mountain shape, and is planted at the lower end portion of the leaf spring. The conical projection 12 is biased so as to project outward from the fourth small hole 10.

Lower shaft portion 1 into which the middle shaft portion is slidably inserted
A fifth small hole 14 is formed in the vicinity of the upper end of 3, and when the fourth small hole 12 and the fifth small hole 14 are aligned with each other, the fifth small hole 14 penetrates both small holes and the conical projection 12 is formed. Protrudes outward to prevent the middle shaft portion 8 from sliding with respect to the lower shaft portion 13, and maintains the state in which the lower shaft portion extends with respect to the middle shaft portion 8.

[0007]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the foldable umbrella, the repelling piece 4 is the enlarged head 4
It is formed to be elongated from a, the middle elongated portion 4b, and the V-shaped bent portion 4c. Further, an engagement piece 7 that connects the uppermost stage shaft portion 1 and the middle stage shaft portion 8 is formed elongated. Further, a narrow leaf spring 11 formed in a mountain shape is used to engage the middle shaft portion 8 and the lower shaft portion 13. These three
Since each of the three parts has a relatively long distance in the longitudinal direction of the shaft, it is necessary that the respective shaft parts 1, 8, 13 from the uppermost shaft part 1 to the lower shaft part 13 are formed relatively long. Most of the conventional folding umbrellas have a two-stage type or a three-stage type and cannot be formed into a four-stage type or a five-stage type.

The present invention has been made in view of the above problems, and an object thereof is a foldable type in which a cissing part and an engaging member are made small and the shaft part of a foldable umbrella is extendable and retractable in four or more steps. It is to provide a shaft structure of an umbrella.

[0009]

In order to achieve the above object, according to the present invention, in a shaft portion structure in which the shaft portion of a folding umbrella is a nesting type, a supporting piece is provided below the innermost hollow shaft portion. The hollow shaft portion is fitted with a long hole extending in the axial direction on the side surface of the hollow shaft portion, and a narrow slit opening at the side surface position aligned with the long hole is axially formed on the support portion piece. A means for biasing the head at all times is provided by inserting a cissing piece whose upper part is formed as an enlarged head into the slit and allowing the head to be retractable from the opening and the long hole. It is provided between the cissing piece and the support piece.

With the above construction, the length of the cissing piece along the shaft portion is greatly shortened and the length of the hollow shaft portion at the uppermost stage is shortened, so that the shaft portion of the folding umbrella has a multi-stage structure of four or more stages. It becomes possible to

Preferably, the lower end of the cissing piece is pivotally attached to the support piece, and the urging means has one end abutting the supporting member and the other end abutting between the lower end and the head. The use of contacting spring members.

Preferably, a small hole is formed in the vicinity of the lower end of the uppermost hollow shaft portion, and a through hole is formed in the radial direction of the support piece at a position corresponding to the small hole in the radial direction. , A coil spring is compression-inserted in the small hole, spherical members are arranged at both ends of the coil spring, and the spherical member is installed so as to slightly project outward from the small hole. A second small hole is formed in the vicinity of the upper end of the second-stage shaft portion into which the hollow shaft portion is inserted, the second small holes being opposed to each other in the radial direction, and the uppermost hollow shaft portion with respect to the second-stage shaft portion. The spherical member is fitted in the second small hole at a sufficiently pulled-out position to restrict the sliding of the uppermost shaft portion with respect to the second shaft portion.

As a result, since it is not necessary to use the elongated engaging piece which has been used conventionally, the length of the uppermost hollow shaft portion is further shortened and the shaft portion of the folding umbrella is divided into four.
It is possible to have a multi-stage configuration of more than one stage. Further preferably, the second-stage shaft portion is slidably fitted in the third-stage shaft portion, and a third small hole is formed near the lower end of the second-stage shaft portion, A projecting piece having a spherical or conical tip is arranged in the small hole of 3, and the projecting piece is biased outward by a coil spring radially inserted inside the shaft portion of the second stage,
A fourth small hole is formed in the vicinity of the upper end of the third-stage shaft portion into which the second-stage shaft portion is inserted, and the second-stage shaft portion is sufficiently larger than the third-stage shaft portion. The protrusion is fitted in the fourth small hole at a position where it is pulled out to regulate the sliding of the shaft portion of the second stage with respect to the shaft portion of the third stage.

With this, since it is possible to omit the use of the narrow leaf spring bent and formed in the conventional manner, the length of the shaft portion below the uppermost hollow shaft portion is shortened and the folding type spring is used. The shaft portion of the umbrella can have a multi-stage structure such as five stages.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below. FIG. 1 is a cross-sectional view showing a main part of a folding umbrella having a shaft with a seven-stage structure when the skeleton is in an intermediate position between the folded state and the extended state. FIG. 2 shows the extended state and FIG. It is a perspective view which decomposes | disassembles and shows the principal part of the cissing means used in the folding umbrella, and in FIG.1 and FIG.2, each axis | shaft which comprises a shaft part is partially fractured | shortened and shown.

In FIG. 1, an upper wheel 21 is fixed to the upper end of the shaft section 20 of the first step constituting the uppermost step, and vertical groove portions with three horizontal slits are formed on the left and right of the upper wheel, respectively. The inner end of the first rib 22 is inserted into the vertical groove portion. A small hole is formed near the inner end of each first rib, and a wire that passes through the small holes of all the first ribs is arranged through the lateral slits.
Is attached to the upper wheel 21 so as to be pivotable up and down.

A cissing means 50 is provided at an intermediate portion of the first-stage shaft portion 20, and the first-stage shaft portion 20 is telescopically disposed in the second-stage hollow shaft portion 23. The hollow shaft portions 24 to 27 of the third to sixth stages after the stage are arranged in a nested manner in the shaft portion of the lower stage, and the shaft portion 27 of the sixth stage is the handle portion 2 of the lowermost stage.
Nested inside the seventh stage shaft portion 28 to which 9 is attached.

A lower roller 30 is provided on the outer periphery of the shaft portion 20 of the first stage.
Is loosely fitted, the lower wheel 30 is composed of a tubular portion 32 having a flange portion 31 in the middle thereof, and the intermediate flange portion 31 is formed with vertical groove portions with three lateral slits on the left and right sides thereof similarly to the upper roller 21. ing. Reinforcing bone 3 in each vertical groove
The inner end of 3 is inserted. Then, small holes are bored in the vicinity of the inner ends of the respective ribs 33, and the wires that pass through the small holes of all the ribs 33 are arranged through the lateral slits, whereby the ribs 33 are in contact with the lower roller 30. It is pivotally mounted up and down with respect to.

In general, regarding the folded bone structure, the outer end of the first rib 22 is pivotally attached to the middle portion of the rib 33, and the rib 33 is
Has an outer end pivotally attached to the vicinity of an inner end of the second rib 34, an inner end of the second rib is pivotally attached to an outer end of the first auxiliary bone 35, and an inner end of the first auxiliary bone is outside of the first rib. It is pivotally attached near the edge. The outer end of the second rib 34 is pivotally attached to the inner end of the third rib 36,
The outer end of the rib 36 is pivotally attached near the inner end of the fourth rib 38,
The inner end of the fourth rib is pivotally attached to the vicinity of the outer end of the second rib by the second auxiliary bone 37. The fourth rib 38 is pivotally attached to the fifth rib 40 via a dowel 39 attached to its lower end.

A dowel 41 is pivotally attached to the lower end of the second rib 34, and an outer end of a wire 42 is rotatably attached to the lower end of the dowel 41, the wire being the middle portion of the second rib. It passes through and is connected to the vicinity of the outer end of the skeleton 33.

From this state, when the lower wheel 30 is pinched and pushed up by the fingertips, the bone structure of the folding umbrella starts to open, and the upper end of the tubular portion 32 of the lower wheel 30 causes the repelling piece 51 of the repelling means 50.
When the lower end of the cylinder part 32 of the lower rocker exceeds the upper end of the repelling piece, the repelling piece 51 is urged against the first shank portion by the elastic means. The outer structure of the folding umbrella 20 is protruded to prevent the lower rocker 30 from descending, and the bone structure of the folding umbrella is extended as shown in FIG. On the contrary, when the cissing piece 51 is pushed into the shaft 20 of the first stage from the state shown in FIG. 2, the lower rocker 30 is pushed below the cissing means 50 by the elasticity of the umbrella bone.
When the state shown in FIG. 1 is reached and the lower wheel 30 is further pulled downward, the umbrella bones are folded so as to gather in the direction of the shaft portion of the first stage from the state shown in FIG.

Next, regarding the cissing means 50 of the present invention,
Description will be given with reference to the exploded view of FIG. The upper portion of FIG. 3 shows the first stage shaft portion 20 having a hollow structure. A long hole 52 is formed in an intermediate portion of the shaft portion 20 of the first stage, and the repellant piece 51 can be retracted through the long hole. A support block body 53, which is long in the axial direction, is tightly fitted and provided in the lower inside of the hollow first-stage shaft portion 20.
The support block body 53 is formed with a vertically long slot 54 having one side surface opened, and the slot 54 is aligned with the long hole 52 of the shaft portion 20 of the first stage in the radial direction. A cissing piece 51 is disposed in the slot 54 so as to be retractable and retractable, and a pin 55 is inserted into a lower end portion of the cissing piece 51, whereby the cissing piece 51 can pivot about the pin. A concave cutout 56 is formed in a part of the cissing piece slightly above the pin 55, and a small ball 58 urged by a small coil spring 57 is formed in the concave cutout 56.
Are engaged with each other, whereby the cissing piece 51 is always urged outward.

Further, the slot 54 of the support block body 53
A through hole 59 is formed at a lower position in a direction intersecting with an extension line of the slot 54, and two small balls 61 are arranged in the through hole 59 with a small coil spring 60 interposed therebetween.
The first shaft portion 2 is positioned so as to be aligned with the through hole 59.
Small holes are bored on both sides of 0 so as to face each other, and the small balls 61 partially project outward from the small holes of the first shaft portion.

A second shaft part 20 in which the first shaft part 20 is fitted in a telescopic manner.
A small hole into which the small ball 61 fits is formed near the upper end of the shaft portion 23 of the first shaft portion 23, and when the first shaft portion 20 is sufficiently pulled out with respect to the second shaft portion 23, the first The small ball 61 provided below the shaft portion of the second shaft portion is fitted into a small hole provided near the upper end of the second shaft portion, and the first shaft portion 20 is pulled out with respect to the second shaft portion 23. Fixed in position. On the contrary, from the pulled-out position, the first shaft portion 20 is moved to the second shaft portion 23.
When pressed with a predetermined force or more against the second shaft portion 2
The small ball 61 provided in the first shaft portion is pushed against the small coil spring 60 by the edge of the small hole formed in 3, and the first shaft portion 20 is nested in the second shaft portion 23. Will be inserted into. In this way, the first shaft portion 20
It is possible to pull out from the shaft portion 23 of the first shaft portion 20 and to house the first shaft portion 20 inside the second shaft portion 23.

As in the case of the first shaft portion 20, small holes are formed in the lower portions of the second shaft portion 23, the third shaft portion 24, and the fourth shaft portion 25 so as to face each other. Small coil springs 63 to 65 are provided between the small holes facing each other, and small balls 66 to 68 arranged at both ends of the small coil springs 63 to 65 are provided with the small holes. Partly outwardly projecting elastically. Second to fourth shaft portions 23, 2
The small balls 66 to 6 are provided in the vicinity of the upper ends of the third to fifth shaft portions 24, 25 and 26, into which the four and 25 are inserted in a nesting manner.
A small hole into which 8 is fitted is formed, and the second to fourth shaft parts are connected to the third hole.
~ When pulled out to the fifth shaft portion, the small balls 66 to 68 are fitted in the small holes and are fixed to the respective pulled out positions. On the contrary, if you push the shaft part from this pulled-out position to insert it in a nested manner,
The small balls 66 to 68 are pushed by the edges of the small holes against the small coil springs 63 to 65, and the second to fourth shaft portions 23 to 25 are fitted respectively.
It is inserted in the fifth shaft portions 24 to 26 in a nesting manner and can be retracted in the same manner as described above.

In the second to fourth shaft portions 23 to 25, small balls 66 to 6 are provided on both sides of the small coil springs 63 to 64.
8 are arranged so that these shafts can telescopically expand. However, since the shaft diameters of the fifth shaft portion 26 and the sixth shaft portion 27 are relatively large, a small coil is provided inside them. Instead of springs, middle coil springs 69, 70 are provided, and only one end of this coil spring has a projection 7 having a truncated cone shape in section.
1, 72 are provided, and the projections are elastically projected outward through the small holes formed in the shaft portions 26, 27. The other constituent operations are the same as those of the second to fourth shaft portions. As a result, the fifth shaft portion 26 and the sixth shaft portion 27 are telescopically retractable with respect to the sixth shaft portion 27 and the seventh shaft portion 28, respectively.

With the above structure, when the handle 29 is forcibly pushed upward after the umbrella bone is folded, the seventh shaft 28
The sixth shaft portion 27 enters the inside of the telescopic type, then the fifth shaft portion 26 is sequentially inserted into the sixth shaft portion 27, and the fourth shaft portion 25 is inserted into the fifth shaft portion 26. Entering, the third shaft portion 24 enters the fourth shaft portion 25, the second shaft portion 23 enters the third shaft portion 24, and the first shaft portion 20 enters the second shaft portion 22. Goes in. Then, by accommodating the tip of the dowel 39 of the umbrella bone in the inner circumference of the upper side of the handle portion 29, the umbrella is folded into a very short size as shown in FIG.

[0028]

As described above, in the shaft portion structure of the folding umbrella of the present invention, the length of the cissing piece along the shaft portion is significantly shortened, and the length of the hollow shaft portion at the uppermost stage is shortened, It is possible to configure the shaft portion of the foldable umbrella to have a multi-stage structure of four or more stages.

Further, in the preferred embodiment, since it is possible to omit the use of a narrow leaf spring bent in a mountain shape as in the prior art, the length of the shaft portion below the uppermost hollow shaft portion can be shortened. Thus, the shaft portion of the foldable umbrella can be configured in multiple stages such as five stages.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of essential parts showing a state in which an umbrella bone of a folding umbrella having a seven-stage shaft portion is in an intermediate position between a folded state and an extended state.

FIG. 2 is a partial cross-sectional view showing a main part when the umbrella bone and the shaft portion are extended from the state of FIG.

FIG. 3 is an exploded perspective view showing a main part of a cissing means used in the folding umbrella of the present invention.

FIG. 4 is a cross-sectional view showing a state in which the umbrella frame and the shaft portion of the folding umbrella of the present invention are folded.

FIG. 5 is a partial cross-sectional view showing a main part of a shaft portion of a conventional folding umbrella.

[Explanation of symbols]

20 First stage shaft 23-28 2nd-7th shaft 50 Repelling means 51 cissing pieces 52 long hole 53 Support block 54 Vertical slot 55 pin 57 Small coil spring 58 small balls 61 small balls 63-65 Small coil spring 66-68 small balls 69,70 Medium coil spring 71,72 A projection with a truncated cone shape in section

Claims (4)

[Claims] 1. In a shaft part structure in which the shaft part of a foldable umbrella is a nesting type having four or more stages, a support part piece is fitted inside the uppermost hollow shaft part below the hollow shaft part. Is formed with an elongated hole extending in the axial direction, and a narrow slit is formed in the axial direction in the supporting piece, the slit being opened at a side surface position aligned with the elongated hole, and the upper head is enlarged in the slit. A cissing piece formed as a part is inserted, the head is made to be retractable from the opening and the elongated hole, and means for constantly urging the head outward is provided between the cissing piece and the support part piece. The shaft structure of the folding umbrella, which is characterized by 2. A lower end portion of the repellent piece is pivotally attached to the support portion piece, and one end of the biasing means abuts on the support member and the other end abuts between the lower end portion and the head portion. The shaft portion structure of a foldable umbrella according to claim 1, wherein a spring member is used. 3. A small hole is bored in the vicinity of the lower end of the uppermost hollow shaft portion, and a through hole is bored in the radial direction of the support piece at a position that coincides with the small hole in the radial direction. The coil spring is compression-inserted in the small hole, spherical members are arranged at both ends of the coil spring, and the spherical member is installed so as to slightly project outward from the small hole. A second small hole is formed in the vicinity of the upper end of the second-stage shaft portion into which the portion is inserted, the second small holes being opposed to each other in the radial direction, and the uppermost hollow shaft portion is sufficiently larger than the second-stage shaft portion. 2. The spherical member is fitted into the second small hole at the pulled-out position to regulate the sliding of the uppermost shaft portion with respect to the two-stage shaft portion. 2. The shaft structure of the foldable umbrella according to 2. 4. The second-stage shaft portion is slidably fitted in the third-stage shaft portion, and a third small hole is formed near the lower end of the second-stage shaft portion, A projecting piece having a spherical or conical tip is provided in the third small hole, and the projecting piece is biased outward by a coil spring radially inserted inside the shaft portion of the second stage. A fourth small hole is formed in the vicinity of the upper end of the third-stage shaft portion into which the second-stage shaft portion is inserted, and the second-stage shaft portion is with respect to the third-stage shaft portion. The protruding piece is fitted in the fourth small hole at a sufficiently pulled-out position to regulate the sliding of the shaft portion of the second stage with respect to the shaft portion of the third stage. The shaft part structure of the foldable umbrella according to any one of claims 1 to 3.