JPH09238723A - Freely stretchable frame structure for umbrella - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide frame structure for umbrella in which 2nd and 1st main frames can be mutually smoothly slid at all times by bending the 1st and 2nd main frames suitably to be arched in the state of through the tensile force of umbrella cloth in the state of opening an umbrella but forcedly recovering the 1st and 2nd main frames to be linear in the state of folding the umbrella and shaping these frames so as not to get tendency to be bent. SOLUTION: Concerning the freely stretchable frame structure, a 1st main frame 4a and a 2nd main frame 4b are provided successively from a runner 2 and while being interlocked with an opening 7 folding operation, the 2nd main frame 4b is fitted into the 1st main frame 4a so as to be freely stretched and slid. Then, the 2nd main frame 4b is composed of a fiber reinforced resin frame 16, whose cross section is almost circular, and a metallic sliding frame part 17 externally fitted to a base end part 15 of the resin frame 16, a stretchable inserting part 7 to be fitted into the 1st main frame 4a so as to be freely slid is constituted by the sliding frame part 17, and an elastic core part 19 for elastically recovering the sliding frame part 17 is formed by the base end part 15 of the resin frame 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retractable frame structure for a western umbrella, in which the ribs extend when the umbrella is opened to increase the function of the western umbrella, while the ribs contract when the umbrella is closed to make the umbrella compact.

[0002]

2. Description of the Related Art A stretchable frame structure for a western umbrella has been proposed by the present applicant as Japanese Utility Model Publication No. 62-30965.

In this frame structure, a rib having a base end pivotally attached P1 to an upper roller fixed to a center rod and a tip having a tip end pivotally attached to a middle portion of the rib P2 and a base end slidable to the center rod. A first rib and a second rib which have a skeleton pivotally attached P3 to the lower wheel and are divided between the pair of pivot attachments P1 and P2 and are fitted to each other so as to extend and retract slidably. The first rib is pivotally attached P1 to the upper rocker at the base end, and the tip of the first rib is connected to the middle part of the fulcrum by the interlocking bone, and the second rib is the pivot for the fulcrum. A telescopic insertion portion extending from the wearing portion P2 toward the upper wheel is slidably fitted into the first rib.

Therefore, since the angle formed by the skeleton and the interlocking bone is widened when the umbrella is opened, the second rib can be pulled out and extended from the first rib, while the angle between the skeleton and the interlocking bone is narrowed when the umbrella is closed. The ribs are polymerized with the first ribs to shrink them.

[0005]

In the prior art, the first rib is made of a metal bone having a U-shaped cross section into which the telescopic insertion portion of the second rib is slidably fitted. The second rib is made of a metal bone having a U-shaped cross section, which has a base end extending from the tip near the tip to the pivot P3 with respect to the fulcrum. It forms an insertion part. That is, the first is U-shaped with a large cross-sectional shape
This is a configuration in which a U-shaped second rib having a small cross-sectional shape is slidably fitted in the groove of the rib.

In the open umbrella state in which the second rib is extended from the first rib, the tension of the umbrella cloth acts on the rib, so that the rib is curved in an arc shape. That is, the entire first and second ribs are curved in an arc shape from the upper wheel to the dew point of the ribs. At this time, the first rib and the second rib are each made of a metal bone having a U-shaped cross section and curved in an arc shape due to the elasticity of iron or steel, but when the tension of the umbrella cloth is released by closing the umbrella, it becomes linear. It is restored and the second rib is contracted while sliding along the first rib.

However, when the umbrella is used on a daily basis and the tension of the umbrella cloth is frequently applied by repeatedly opening and closing the umbrella, the first rib and the second rib made of metal bone are curved so as to form an arc shape. Due to the habit, even when the umbrella is closed, it is no longer possible to restore the parent bones to a straight line.

For this reason, if the opening / closing operation of the umbrella is performed in such a curving state, the second rib cannot slide smoothly with respect to the first rib, and the opening / closing operation cannot be performed smoothly. Be invited. Therefore, when the user of the western umbrella forcibly moves the lower rocker to open or close, the sliding parts of the first rib and the second rib further deform, or the interlocking bone and / or the fulcrum deforms, There is a risk that it will become unusable.

[0009]

SUMMARY OF THE INVENTION The present invention solves the above problems and, in the open state, the tension of the umbrella cloth allows the first and second ribs to be curved in an arc shape, while the umbrella is closed. With the tension of the cloth released, the first rib and the second rib are forcibly restored to a straight line, and the second rib and the first rib are always suitable for each other without imparting a curving habit like the conventional one. It is intended to provide a stretchable frame structure of a umbrella that can slide.

Therefore, according to the present invention, a rib having a base end pivotally attached P1 to an upper roller fixed to a center rod and a tip pivotally attached P2 to a midway part of the rib and the base end slidably attached to the center rod. A first rib having a fulcrum pivotally attached to the lower rocker P3, the rib being divided between the pair of pivotally attached portions P1 and P2 and fitted to each other in a telescopically slidable manner. It consists of a second rib and a first
The proximal end of the rib is pivotally attached P1 to the upper wheel, and the distal end of the first rib and the middle part of the fulcrum are connected by an interlocking bone.
In the frame structure of the umbrella, which is formed by slidably inserting the telescopic insertion portion extending from the pivotally attached portion P2 with respect to the fulcrum toward the upper wheel to the first rib, the rib constitutes the following means. It has characteristics.

That is, according to the first aspect of the present invention, the first rib is made of a metal bone having a substantially U-shaped cross section into which the telescopic insertion portion of the second rib is slidably fitted.
A resin bone made of a fiber-reinforced resin having a substantially circular cross section, wherein the second rib has a base end portion extending from a tip near the tip of the tip beyond the pivot portion P2 to the fulcrum toward the elastic insertion portion; A resin sliding bone part externally fitted to the base end part of the resin bone, and the sliding bone part constitutes a telescopic insertion part slidably fitted inside the first rib The point is that the elastic core portion is formed by fitting the proximal end portion of the bone inward over substantially the entire length of the sliding bone portion.

According to a second aspect of the present invention, the first rib is made of a metal bone having a substantially U-shaped cross section into which the telescopic insertion portion of the second rib is slidably fitted.
A resin bone made of a fiber-reinforced resin having a substantially circular cross section, wherein the second rib has a base end portion extending from a tip near the tip of the tip beyond the pivot portion P2 to the fulcrum toward the elastic insertion portion; A resin sliding bone part externally fitted to the base end part of the resin bone, and the sliding bone part constitutes a telescopic insertion part slidably fitted inside the first rib The point is that the elastic core part is formed by fitting the proximal end part of the bone to the midway part of the sliding bone part and fitting it inside.

Further, according to the third aspect of the present invention, the first rib is made of a metal bone having a substantially U-shaped cross section into which the telescopic insertion portion of the second rib is slidably fitted.
The second rib is made of a resin bone made of a fiber-reinforced resin having a substantially circular cross-section, the resin bone having a base end extending from the tip near the tip of the tip beyond the pivotal joint P2 to the fulcrum toward the elastic insertion portion, The base end portion of the second rib supports a stretchable insertion portion slidably fitted into the first rib, and the stretchable insertion portion has elasticity of the resin bone itself made of fiber reinforced resin. The point is that it is configured as an elastic unit.

[0014]

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

(First Embodiment) In the first embodiment shown in FIGS. 1 to 3, the frame structure of a western umbrella has an upper roller 2 fixed to a center rod 1 and a lower roller 3 slidable on the center rod 1. On the other hand, the proximal end of the rib 4 is pivotally attached P1 to the upper wheel 2, and the tip of the fulcrum 5 is pivotally attached P2 to the midway portion of the ridge 4, and
It is constructed by pivotally connecting the base end of P to the lower wheel 3. The rib 4 has a first rib 4a which is divided between the pair of pivotally attached portions P1 and P2 and which is fitted to each other so as to extend and contract slidably.
And the second rib 4b. The first rib 4a has its base end pivotally attached to the upper wheel by the pivot portion P1.
The distal end of the skeleton and the middle portion of the fulcrum 5 are connected by an interlocking bone 6. The second rib 4b has a pivotal portion P with respect to the fulcrum 5.
An elastic insertion portion 7 extending from 2 to the upper wheel is provided, and the elastic insertion portion 7 is slidably fitted into the first rib 4a.

The first rib 4a is made of a metal bone 8 having a substantially U-shaped cross section into which the telescopic insertion portion 7 of the second rib 4b is slidably fitted, and the telescopic insertion portion 7 can be inserted at the tip. A bracket 9 having a U-shaped or tubular shape in cross section is fixed, and one end of the interlocking bone 6 is pivotally attached P4 to the bracket 9.

In the illustrated example, each of the supporting ribs 5 and the interlocking bones 6 is made of a round bar material formed by extruding a resin (fiber reinforced resin) reinforced by fibers such as carbon fiber or glass fiber. There is. The fulcrum 5 has pivot supports 10 and 11 fixed to both ends, one pivot support 10 is pivotally attached to the second rib 4b by the pivot attachment portion P2, and the other pivot support 11 is pivotally connected to the pivot bone 11. It is pivotally attached to the lower wheel 3 by the landing portion P3. Further, a connecting tool 12 is fixed to a portion of the fulcrum 5 near the pivot portion P2. The interlocking bone 6 has pivot supports 13 and 14 fixed to both ends thereof, one pivot support 13 is pivotally attached to the bracket 9 of the first rib 4a by the pivot attachment portion P4, and the other pivot support 14 is attached. Is pivotally attached P5 to the connector 12 of the fulcrum 5. In the present invention, the supporting ribs 5 and / or the interlocking bones 6 are made of a round rod made of fiber reinforced resin as described above, and also made of a metal groove bone having a substantially U-shaped cross section or a metal wire rod. It may be composed of striated bone.

The expandable frame structure constructed as described above is not limited to the first embodiment described with reference to FIGS. 1 to 3, but the second embodiment described below with reference to FIGS. 4 and 5 and FIGS. The third embodiment, which will be described later on the basis of No. 7, has a common basic frame structure. Therefore, in the description of the second and third embodiments to be described later, the description of the basic frame structure is applied, and the duplicated description will be omitted.

In the first embodiment shown in FIGS. 1 to 3, the second rib 4b extends from a tip (not shown) near the tip of the bone beyond the pivot portion P2 to the fulcrum 5 to the expansion / contraction insertion portion 7. A resin bone 16 provided with a base end portion 15 that faces toward it, and a metal sliding bone portion 1 externally fitted to the base end portion 15 of the resin bone 16.
7

The resin bone 16 is a round bar material having a substantially circular cross section formed by extruding a resin (fiber reinforced resin) reinforced by fibers such as carbon fiber or glass fiber, and is pivotally attached to the fulcrum 5. The connector 18 for forming the portion P2 is fixed. That is, the connector 18 is
The periphery of the resin bone 16 is surrounded and fixed by caulking, and the pivot support 10 of the support bone 5 is pivotally attached to the bifurcated piece to form the pivotally attached portion P2.

The sliding skeleton 17 constitutes a telescopic insertion part 7 slidably fitted in the first rib 4a, and the base end 15 of the resin skeleton 16 is attached to the sliding skeleton 17a. The elastic core portion 19 can be provided by fitting it over substantially the entire length. In other words, the sliding bone portion 17 is made up of the resin bone 1
A fixing piece 20 surrounding the base end portion 15 of 6 and fixed by caulking
And the elastic core portion 19 fitted therein is integrated. The sliding bone portion 17 pivotally connects the slide guide 22 to the projecting piece 21 projecting beyond the base end portion 15 of the resin bone 16 so that the slide guide 22 can swing. The outer periphery is slidably mounted.

In the first embodiment, when the umbrella is opened as shown in FIG. 1, the fulcrum 5 between the pivotal portions P5-P2 is opened.
And the angle formed by the interlocking bone 6 between the pivot parts P5-P4 is widened, so that the telescopic insertion part 7 is pulled out while sliding from the first rib 4a, and the second rib 4b with respect to the first rib 4a. And extend it. On the other hand, when the umbrella is closed as shown in FIG. 2, since the angle formed by the fulcrum 5 and the interlocking bone 6 is narrowed, the telescopic insertion part 7 slides into the first rib 4a, and The rib 4b is contracted with respect to the first rib 4a. The expansion / contraction operation of the second rib 4b is performed by sliding the expansion / contraction insertion portion 7 in the groove of the first rib 4a and sliding the slide guide 22 on the outer peripheral surface of the first rib 4a.

As shown in FIG. 1, when the second rib 4b is extended from the first rib 4a, the tension of the umbrella cloth (not shown) acts on the rib 4, so that the rib 4 is arcuate. Bend to. That is, the entire first rib 4a and the second rib 4b are curved in an arc shape from the upper wheel 2 to the dew tip. As shown in FIG. 2, when the tension of the umbrella cloth is released by closing the umbrella, the first ribs 4a and the second ribs 4b are restored to a linear shape, and the second ribs 4b slide along the first ribs 4a. While shrinking.

As described above regarding the prior art, when the tension of the umbrella cloth is frequently applied by repeatedly using the Western umbrella and repeatedly opening and closing it, the first ribs 4a and the second ribs 4b become arcuate. As described in the related art, when both the first rib and the second rib are composed only of metal groove bones, the curl is attached.

With respect to this point, according to the first embodiment, when the tension of the umbrella cloth is released by closing the umbrella from the curved opened state of the rib 4 as shown in FIG. 1, as shown in FIG. The elastic core portion 1 in which the metallic sliding bone portion 17 that constitutes the expansion / contraction insertion portion 7 is configured by the base end portion 15 of the resin bone 16
It is forcibly restored by 9 and is restored in a straight line. Therefore, even if a curving tendency is imparted to the metallic sliding bone portion 17 itself, it is forcibly restored to a straight state by the strong elastic restoring force of the elastic core portion 19 and shaped.

By the way, the first main rib 4a made of the metal bone 8
Does not have an elastic core portion like the second ribs 4b, so that there is a possibility that a curving habit may be easily imparted in the state as it is. With respect to this point, according to the first embodiment, when the umbrella is closed, the sliding bone portion 17 shaped into a straight line enters the groove of the first rib 4a and is internally fitted and polymerized over substantially the entire length. As a result, the first rib 4a is also forcibly restored to the straight state and shaped.

As a result, in the process from the open state to the closed state, both the sliding rib portion 17 of the second rib 4b and the first rib 4a are forcibly restored and shaped into a straight line. Therefore, the smooth expansion and contraction operation of the second ribs 4b and the first ribs 4a is guaranteed during the subsequent opening and closing operations. That is, the sliding bone portion 17 slides smoothly in the groove of the first rib 4a, and the slide guide 22 slides smoothly on the outer periphery of the first rib 4a. It does not cause frictional resistance.

(Second Embodiment) A second embodiment shown in FIGS. 4 and 5.
In the embodiment, as described above, the basic skeleton structure is common to that of the first embodiment, and therefore the common part is shown in FIG.
Throughout the above description, the same reference numerals as those in FIG.

In this second embodiment, the second rib 4b
Is a resin bone 16 provided with a base end portion 15 extending from a tip near the tip (not shown) beyond the pivotal attachment portion P2 to the fulcrum 5 toward the elastic insertion portion 7, and a base end of the resin bone 16 The sliding frame 17 is made of metal and is fitted onto the portion 15.

The resin bone 16 is formed of a round bar material having a substantially circular cross section formed by extruding a resin (fiber reinforced resin) reinforced by fibers such as carbon fiber or glass fiber.

The sliding bone portion 17 constitutes the expansion / contraction insertion portion 7 slidably fitted in the first rib 4a, and the base end portion 15 of the resin bone 16 is connected to the sliding bone portion 17 of the sliding bone portion 17. The elastic core part 19 can be provided by fitting it in the middle part. The sliding bone portion 17 is provided with an extension portion 23 extending from the expansion and contraction insertion portion 7 to the pivotal attachment portion P2 for the fulcrum 5, and the extension portion 23 allows the base end portion 15 of the resin bone 16 to be extended.
And surrounds the edge and crimps the edge portion to the base end portion 20.
Then, the internally fitted elastic core portion 19 is integrated. Further, at the extension end of the extension portion 23, a pivotal connection portion P for the fulcrum 5 is provided.
The connecting member 18 for forming 2 is fixed. That is,
The connector 18 surrounds the resin bone 16 from the outer periphery of the extension portion 23 and is fixed by caulking, and the pivot support portion 10 of the support bone 5 is pivotally attached to the bifurcated piece to form the pivot attachment portion P2. The sliding bone portion 17 pivotally connects a slide guide 22 to a projecting piece 21 projecting from a free end, and the slide guide 22 is slidably mounted on the outer periphery of the first rib 4a. I am busy.

Therefore, according to the second embodiment, when the tension of the umbrella cloth is released by closing the umbrella from the curved open state of the rib 4 as shown in FIG. The sliding bone portion 17 is forcibly elastically restored by the elastic core portion 19 constituted by the base end portion 15 of the resin bone 16 and restored in a straight line. Therefore, the metal sliding bone 1
Even if the curving habit is imparted to 7 itself, the elastic core portion 19 is forcibly restored to a straight state and shaped by the strong elastic restoring force.

At this time, in the first embodiment described above, the elastic core portion 19 is provided over substantially the entire length of the sliding bone portion 17, whereas in the second embodiment, the elastic core portion 19 is provided in the sliding bone portion. It is provided only for a short length reaching the middle portion of 17, so that the sliding bone portion 17 has the metal component portion 24 which does not have the elastic core portion 19. The restoration shaping effect of 17 can be obtained to some extent. That is, since the elastic core portion 19 made of the resin bone 16 is fixed to the sliding bone portion 17 at two points apart from the connecting tool 18 and the caulking fixing portion 20a, the sliding bone portion 17 is located between the two points. Is suitably restored and shaped, and as a result, the sliding bone portion 17 is shaped into a substantially straight state over the entire length.

By the way, the first main rib 4a made of the metal bone 8
Does not have an elastic core portion like the second ribs 4b, so that there is a possibility that a curving habit may be easily imparted in the state as it is. With respect to this point, according to the second embodiment, when the umbrella is closed, the sliding bone portion 17 shaped into a straight line enters the groove of the first rib 4a and is internally fitted and polymerized over substantially the entire length. As a result, the first rib 4a is also forcibly restored to the straight state and shaped.

As a result, in the process from the open state to the closed state, both the sliding bone portion 17 of the second rib 4b and the first rib 4a are forcibly restored and shaped into a linear state. Therefore, the smooth expansion and contraction operation of the second ribs 4b and the first ribs 4a is guaranteed during the subsequent opening and closing operations. That is, the sliding bone portion 17 slides smoothly in the groove of the first rib 4a, and the slide guide 22 slides smoothly on the outer periphery of the first rib 4a. It does not cause frictional resistance.

(Third Embodiment) A third embodiment shown in FIGS. 6 and 7.
In the embodiment, as described above, the basic skeleton structure is common to that of the first embodiment, and therefore the common part is shown in FIG.
Throughout the above description, the same reference numerals as those in FIG.

In this third embodiment, the second rib 4b
Is composed of a resin bone 16 having a base end portion 15 extending from the tip end near the dew end (not shown) beyond the pivotal attachment portion P2 to the fulcrum 5 and extending toward the elastic insertion portion 7.

The resin bone 16 is formed of a round bar material having a substantially circular cross section formed by extruding a resin (fiber reinforced resin) reinforced by fibers such as carbon fiber or glass fiber.

Therefore, the base end portion 15 of the resin bone 16 constitutes the elastic insertion portion 7 slidably fitted in the first rib 4a, and the elastic insertion portion 7 is made of a fiber reinforced resin. It is configured as a resilient portion 19a having the resilient force of the bone 16 itself.

The resin bone 16 is fixed with a connecting member 18 for forming a pivotally attached portion P2 with respect to the fulcrum 5. That is, the connector 18 surrounds the resin bone 16 and is fixed by caulking, and the pivot support 10 of the fulcrum 5 is pivotally attached to the bifurcated piece to form the pivot attachment portion P2. Then, a metallic projection piece 21 is caulked and fixed to the free end of the expansion / contraction insertion portion 7 constituted by the base end portion 15 of the resin bone 16, and the projection piece 2
A slide guide 22 is pivotably connected to the first slide guide 22, and the slide guide 22 is slidably mounted on the outer periphery of the first rib 4a.

Therefore, according to the third embodiment, when the tension of the umbrella cloth is released by closing the umbrella from the curved open state of the rib 4 as shown in FIG. 1
Since the base end portion 15 of 6 itself constitutes the elastic portion 19a, it is strongly and compulsorily elastically restored to a straight line. Therefore, even if a curving tendency is imparted to this portion, it is naturally restored to a straight state by the resilient restoring force of the resilient portion 19a and shaped.

By the way, the first main rib 4a made of the metal bone 8
May easily be given a curving habit. With respect to this point, according to the third embodiment, when the umbrella is closed, the stretchable insertion portion 7 shaped into a straight line enters the groove of the first rib 4a and is internally fitted and polymerized over substantially the entire length. The first rib 4a is also forcibly restored to a straight state and shaped.

As a result, in the process from the open state to the closed state, both the telescopic insertion portion 7 of the second rib 4b and the first rib 4a are forcibly restored and shaped into a straight line. Therefore, in the subsequent opening / closing operation, the smooth expansion / contraction operation of the second ribs 4b and the first ribs 4a is guaranteed. That is, the expansion / contraction insertion part 7 slides smoothly in the groove of the first rib 4a, and the slide guide 22 slides smoothly on the outer periphery of the first rib 4a, so that a large friction is caused at the sliding portion as in the conventional case. It does not create resistance.

[0044]

In the conventional expandable frame structure,
The first and second ribs have a curving tendency, and the second rib cannot slide smoothly with respect to the first rib when opening and closing, which causes a large frictional resistance in the opening and closing action, forcing an unreasonable opening and closing action. However, according to the present invention, the first ribs 4 are deformed due to the tension of the umbrella cloth.
While a and the second rib 4b are preferably curved in an arc shape,
In a state where the tension of the umbrella cloth is released by closing the umbrella, the elastic core portion 19 or the elastic portion 19a constituted by the base end portion 15 of the resin bone 16 made of the fiber-reinforced resin round bar is used to
Since the expansion / contraction insertion portion 7 of the rib 4b is forcibly restored to the linear shape, the expansion / contraction insertion portion 7 itself can be shaped into a linear shape, and the expansion / contraction insertion portion 7 can be inserted when the umbrella is closed. The first ribs 4a to be internally fitted can be shaped straight at the same time, and as a result, it is possible to provide a frame structure in which smooth mutual sliding of the second ribs 4b and the first ribs 4a is always ensured.

[Brief description of drawings]

FIG. 1 is a front view showing a frame structure according to a first embodiment of the present invention in an open state.

FIG. 2 is a front view showing the frame structure according to the first embodiment in a closed umbrella state.

FIG. 3 is an enlarged front view showing a partially disassembled frame structure according to the first embodiment.

FIG. 4 is a front view showing the frame structure according to the second embodiment of the present invention in an open state.

FIG. 5 is an enlarged front view showing the frame structure according to the second embodiment in a partially disassembled state.

FIG. 6 is a front view showing a frame structure according to a third embodiment of the present invention in an open state.

FIG. 7 is an enlarged front view showing the frame structure according to the third embodiment in a partially disassembled state.

[Explanation of symbols]

 1 Middle Rod 2 Upper Rock 3 Lower Rock 4 Rib 4a 1st Rib 4b 2nd Rib 5 Spine 6 Interlocking Bone 7 Expansion Insert 8 Metal Bone 9 Bracket 12 Connector 15 Base End 16 Resin Bone 17 Sliding Bone 18 Connecting tool 19 Elastic core part 19a Repulsive part 21 Projection piece 22 Slide guide

Claims (3)

[Claims] 1. A base end is pivotally attached P1 to an upper roller fixed to a center rod.
And a skeleton pivotally attached P3 to the middle portion of the skeleton and a proximal end of the skeleton pivotally attached to the lower rod to be slidable on the center rod of the skeleton. Pivot P1,
It is composed of a first rib and a second rib which are divided between P2 and are fitted to each other so as to be able to extend and contract slidably. The first rib is pivotally attached P1 to the upper rocker at the base end, and the tip of the first rib is formed. The middle part of the skeleton is connected by an interlocking bone, and the second rib has a telescopic insertion part extending from the pivotally attached part P2 to the skeleton toward the upper wheel so as to be slidably fitted into the first rib. In the frame structure of the umbrella, the first rib is made of a metal bone having a substantially U-shaped cross section into which the elastic insertion portion of the second rib is slidably fitted, and the second rib has a tip near the tip. A resin bone made of a fiber-reinforced resin having a substantially circular cross-section and having a base end portion extending from the pivotal connection portion P2 with respect to the fulcrum toward the elastic insertion portion, and the resin bone is externally fitted to the base end portion of the resin bone. An expansion and contraction insert made of a metal sliding bone part, and slidably fitted into the first rib by the sliding bone part. Together constituting a part, telescopic frame structure of umbrella, characterized in that formed by configuring the resilient core portion by allowed to fit into substantially over the entire length of the sliding bone portion base end portion of the resin bone. 2. A base end is pivotally attached P1 to an upper roller fixed to a center rod.
And a skeleton pivotally attached P3 to the middle portion of the skeleton and a proximal end of the skeleton pivotally attached to the lower rod to be slidable on the center rod of the skeleton. Pivot P1,
It is composed of a first rib and a second rib which are divided between P2 and are fitted to each other so as to be able to extend and contract slidably. The first rib is pivotally attached P1 to the upper rocker at the base end, and the tip of the first rib is formed. The middle part of the skeleton is connected by an interlocking bone, and the second rib has a telescopic insertion part extending from the pivotally attached part P2 to the skeleton toward the upper wheel so as to be slidably fitted into the first rib. In the frame structure of the umbrella, the first rib is made of a metal bone having a substantially U-shaped cross section into which the elastic insertion portion of the second rib is slidably fitted, and the second rib has a tip near the tip. A resin bone made of a fiber-reinforced resin having a substantially circular cross-section and having a base end portion extending from the pivotal connection portion P2 with respect to the fulcrum toward the elastic insertion portion, and the resin bone is externally fitted to the base end portion of the resin bone. An expansion and contraction insert made of a metal sliding bone part, and slidably fitted into the first rib by the sliding bone part. Together constituting a part, telescopic frame structure of umbrella, characterized in that formed by configuring the resilient core portion by allowed to fit in the lead proximal end portion of the resin bone in the middle portion of the sliding bone portion. 3. A base end is pivotally attached P1 to an upper roller fixed to a center rod.
And a skeleton pivotally attached P3 to the middle portion of the skeleton and a proximal end of the skeleton pivotally attached to the lower rod to be slidable on the center rod of the skeleton. Pivot P1,
It is composed of a first rib and a second rib which are divided between P2 and are fitted to each other so as to be able to extend and contract slidably. The first rib is pivotally attached P1 to the upper rocker at the base end, and the tip of the first rib is formed. The middle part of the skeleton is connected by an interlocking bone, and the second rib has a telescopic insertion part extending from the pivotally attached part P2 to the skeleton toward the upper wheel so as to be slidably fitted into the first rib. In the frame structure of the umbrella, the first rib is made of a metal bone having a substantially U-shaped cross section into which the elastic insertion portion of the second rib is slidably fitted, and the second rib has a tip near the tip. From a fiber-reinforced resin resin bone having a substantially circular cross section with a base end extending beyond the pivotal attachment portion P2 to the fulcrum toward the elastic insertion portion, and the first rib by the base end of the second rib. A stretchable insertion part that is slidably fitted in the Telescopic frame structure of umbrella, characterized by comprising constructed as resilient section having a resilient force of the resin bone itself, which is the manufacturing.