JP3188940U - Folding umbrella - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sturdy folding umbrella capable of more reliably preventing plastic deformation and breakage of an umbrella bone such as a middle rib even when it receives a strong wind. SOLUTION: A rib 17 has a base rib 21, a middle rib 22, and a distal rib 23, which are sequentially connected via a first joint 25 and a second joint 26 so as to be bendable and stretchable in three. The tip of the bone receiving 18 is pivotally supported in the middle part of the basal rib, and the first spring wire 27 is connected between the vicinity of the pivoting portion of the receiving bone to the basal rib and the protruding end of the first joint. , A folding umbrella in which a second spring wire 30 is connected between the vicinity of the pivotal part of the base rib to the middle rib and the protruding end of the second joint, and the middle rib is elastic together with the distal rib. It is formed in a rod shape by resin, and the first joint and the second joint are made of metal. When a strong wind is received on the lower surface of the umbrella cloth, the middle rib and the tip rib are greatly bent upward due to elastic deformation, and the strong wind can escape. [Selection diagram] Fig. 1

Description

  The present invention relates to a folding umbrella that prevents the umbrella bones such as the main bones and the ribs from breaking even under strong winds.

  Folding umbrellas whose main bones flip upside down even when subjected to strong winds so that bones such as the main bones and ribs do not break are pivoted to the upper rocker fixed to the tip of the center rod and opened and closed. A plurality of master bones, and a plurality of bones whose base ends are pivotally attached to the lower rocker slidably fitted to the center rod and the distal ends extend radially. It has a pre-parent bone and is configured to be able to bend and stretch in three by sequentially connecting these via a first joint extending and projecting from the base of the middle master bone and a second joint extending and projecting from the base of the pre-main bone. The distal end of the bone is pivotally supported at the intermediate portion of the base bone, and between the vicinity of the pivot to the base bone of the bone and the protruding end of the first joint, The first spring wire is connected so as to form a four-bar linkage between them, the vicinity of the pivot to the middle parent bone of the base bone, and the protruding end of the second joint In, those second spring wire to form a four bar linkage between the middle and the base rib rib and the leading rib are connected between.

  In this type of conventional folding umbrella, the middle bone of the main bone is formed in a U-shaped cross section by bending a long belt-shaped metal plate along the longitudinal direction in the same manner as the base bone and the receiving bone (for example, patents). Reference 1).

Utility model registration No. 3068564

In the conventional case, the middle bone of the main bone was formed in a U-shaped cross section by a metal plate, and thus lacks elasticity. Therefore, measures against strong winds are still insufficient, and folding umbrellas have a strong wind. If the middle bone is greatly inverted upward or the middle bone is greatly bent downward, the middle bone, the base bone, and the bone are likely to be plastically deformed or damaged.
The present invention has been made in view of the above problems, and an object of the present invention is to provide a sturdy folding umbrella that can more reliably prevent plastic deformation and breakage of an umbrella bone such as a middle main bone even under strong wind.

Specific means for solving the problems in the present invention are as follows.
The technical means of the present invention for solving this technical problem includes a plurality of main bones 17 whose base ends are pivotally attached to the upper rocker 4 fixed to the distal end portion of the intermediate rod 3 and opened and closed, and the intermediate rod 3 is slid. The base bone 17 is provided with a plurality of receiving bones 18 whose base ends are pivotally attached to the lower roller 5 that is externally fitted and extends radially, and the master bone 17 has a base bone 21, a middle master bone 22, and a tip master bone 23. These are sequentially connected via a first joint 25 extending and projecting from the base of the middle parent bone 22 and a second joint 26 extending and projecting from the base of the front parent bone 23 so that they can be bent and stretched in three.
The distal end portion of the receiving bone 18 is pivotally supported by the intermediate portion of the base bone 21, and the proximal bone 21 and the receiving bone are provided between the vicinity of the pivoting portion of the receiving bone 18 to the base bone 21 and the protruding end portion of the first joint 25. The first spring wire rod 27 is connected so as to form a four-joint link mechanism 28 between the intermediate bone 18 and the middle bone 22, and the vicinity of the pivot to the middle bone 22 of the base bone 21 and the protruding end of the second joint 26. A folding umbrella in which a second spring wire 30 is connected so as to form a four-joint link mechanism 31 between the base bone 21, the middle bone 22, and the tip bone 23,
The middle bone 22 is formed in a rod shape with a synthetic resin having elasticity together with the leading bone 23, and the first joint 25 and the second joint 26 are made of metal.

Another technical means of the present invention is that a spring locking body 41 is slidably fitted on a middle part of the middle bone 22, and a middle part of the second spring wire 30 is engaged with the spring locking body 41. It is in the point which is held together.
Further, according to another technical means of the present invention, an engagement protrusion 63 protruding toward the middle main bone 22 is formed in the middle of the second spring wire 30, and the spring locking body 41 slides on the middle main bone 22. A fitting tube portion 42 that is freely fitted and a locking projection 43 that protrudes from the fitting tube portion 42 toward the second spring wire 30 are provided. The locking projection 43 is engaged in the longitudinal direction of the middle bone. A stop hole 44 is provided, and the engaging projection 63 is inserted and held in the locking hole 44 of the locking projection 43.

  Further, according to another technical means of the present invention, a metallic connector 46 is fitted and fixed to the distal end portion of the middle bone 22 so as to protrude outward, and the middle bone 22 is connected to the second joint 26 via the coupling 46. Is pivotally supported about a pivot shaft 49 so as to be swingable.

  According to the present invention, since the middle main bone is formed in a rod shape with the synthetic resin having elasticity together with the front parent bone, when the strong wind is received on the lower surface of the umbrella cloth when the umbrella is opened, the base bone and the bone are slightly In the extent that it is elastically deformed upward, the middle bone and the leading bone are largely bent upward by elastic deformation and inverted, thereby allowing strong wind to escape smoothly from the lower side to the upper side of the umbrella cloth. Therefore, it is possible to more reliably prevent the middle parent bone, the base parent bone, and the receiving bone from being plastically deformed or damaged.

Then, after all the middle bone and the leading bone have warped upward, by sliding the lower rocker downward with respect to the middle rod, the middle part of the base bone is pulled down via the ribs, The middle and leading bones can be easily returned to the original state with no upward warping.
Further, when the umbrella cloth receives a strong wind from the upper side, it is possible to prevent the middle and leading bones from being elastically deformed downward and to prevent the base and bones from being elastically deformed downward. By being greatly elastically deformed downward, it is possible to prevent plastic deformation or damage.

  In addition, since the first joint and the second joint are made of metal, the connecting portion between the base bone and the middle parent bone and the connecting portion between the middle parent bone and the previous parent bone can be made sturdy. In spite of the fact that the main bone is made of elastic synthetic resin, it is possible to prevent the connecting portion from being unintentionally rattling in the vertical direction or the horizontal direction during use of the folding umbrella.

[BRIEF DESCRIPTION OF THE DRAWINGS] It is a side view of the main bone and the receiving bone which shows one Embodiment of this invention. It is a side view of the folding umbrella of the same folding state. It is a side view of the folding umbrella of the same open state. It is the sectional view on the AA line of the same FIG. It is the BB sectional view taken on the line of FIG. It is CC sectional view taken on the line of FIG. It is the DD sectional view taken on the line of FIG. It is the EE sectional view taken on the line of FIG. It is the FF sectional view taken on the line of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 9 show an embodiment of the present invention. 1 to 3, the folding umbrella 1 includes a middle rod 3, an upper rocker 4 fixed to the tip of the middle rod 3, and a lower rocker 5 externally fitted to the middle rod 3 so as to be slidable up and down.
The middle bar 3 is configured to be extendable and contractable by three cylinders. A flipper 6 is provided below the upper roll 4 of the middle bar 3 so as to be freely retractable. The flipper 6 is urged so as to project outward from the middle bar 3 by a spring (not shown). A gripping portion 7 is attached to the lower part of the middle bar 3.

The bone receiving pivot 11 is provided at the center in the vertical direction of the lower rocker 5, the upper cylinder 12 is provided above the bone receiving pivot 11, and the lower cylinder 13 below the bone receiving pivot 11. Is provided. In the lower cylinder portion 13 of the lower rocker 5, the flip 6 is detachably engaged with the lower tube portion 13 so that the lower rocker 5 is locked on the upper portion of the middle rod 3 so as not to slide up and down. ing.
An operation button 15 is provided on the lower cylinder portion 13, and when the operation button 15 is pressed, the repellant 6 moves back into the middle rod 3 against the bias of the spring and disengages from the lower cylinder portion 13. Thus, the lower rocker 5 is configured to be slidable.

In addition, the folding umbrella 1 has a base end that is connected to a plurality of (eight in the illustrated example) main bones 17 that are pivotally attached to the upper rocker 4 and opened and closed and a bone receiving pivotal attachment part 11 of the lower rocker 5. A plurality of (8 in the illustrated example) receiving bones 18 that are pivotally attached and radially extend on the tip side are provided, and an umbrella cloth 19 is disposed so as to cover the plurality of main bones 17 from above. It is connected with a connecting string (not shown) at a plurality of locations.
The master bone 17 includes a base bone 21, a middle master bone 22, and a tip parent bone 23, and a first joint 25 that extends and projects from the base of the middle master bone 22 and a second joint that extends and projects from the base of the tip master bone 23. 26 and are connected in series through the H. 26 so as to be able to bend and stretch in three.

  The distal end portion of the receiving bone 18 is pivotally supported by the intermediate portion of the base bone 21. A first spring wire 27 is connected between the vicinity of the pivoting portion of the receiving bone 18 to the base bone 21 and the protruding end of the first joint 25, and the first spring wire 27 is connected to the base bone 21, the receiving bone 18, and the middle bone. A four-joint link mechanism 28 is formed between the first and second members 22. That is, the four-joint link mechanism 28 includes the base bone 21, the receiving bone 18, the middle bone 22, and the first spring wire 27, and the middle bone 22 extends or bends in conjunction with the opening / closing operation of the base bone 21. It is like that.

  A second spring wire 30 is connected between the vicinity of the pivotal support portion of the base bone 21 to the middle bone 22 and the protruding end portion of the second joint 26, and the second spring wire 30 is connected to the base bone 21, the middle bone 22, and the front parent bone. A four-bar linkage mechanism 31 is formed between the two and 23. That is, the four-joint link mechanism 31 is configured by the base bone 21, the middle bone 22, the tip bone 23, and the second spring wire 30, so that the tip parent bone 23 bends and stretches in conjunction with the bending motion of the middle bone 22. It has become.

  Thus, when the lower rocker 5 is slid upward, the repelling 6 engages with the lower cylinder portion 13 to lock the lower rocker 5 on the upper part of the middle rod 3 so that it cannot slide up and down. The receiving bone 18 presses the middle portion of the base bone 21 upward to open the base bone 21, and the action of the first spring wire 27 causes the middle main bone 22 to extend relative to the base bone 21 in conjunction with the base bone 21. At the same time, it is configured such that the leading parent bone 23 extends relative to the middle parent bone 22 by the action of the second spring wire 30.

Further, when the lower rocker 5 is slid downward, the receiving bone 18 pulls the intermediate portion of the base bone 21 downward to close the base bone 21 and interlocks with the base bone 21 by the action of the first spring wire 27. Thus, the middle parent bone 22 is bent with respect to the base parent bone 21, and the tip parent bone 23 is bent with respect to the middle parent bone 22 by the action of the second spring wire 30.
The receiving bone 18 is formed by bending a metal plate such as steel or aluminum alloy, and the base portion and the distal end portion of the receiving bone 18 have a cross section U having a pair of side walls and an upper connecting wall connecting the upper ends of the pair of side walls. It is formed in a letter shape, and a midway part between the base part and the tip part is formed in a cylindrical shape.

The base of the bone 18 is pivotally attached to the bone receiving pivot 11 of the lower rocker 5, and the distal end of the bone 18 is inserted into the side wall of the base bone 21, which will be described later, so that it can swing around the pivot shaft 33. It is pivotally supported. A spring locking shaft 34 is inserted and held between the side walls slightly proximal to the pivot shaft 33 of the receiving bone 18.
The base bone 21 is formed in a U-shaped cross section having a pair of side walls and an upper connecting wall that connects the upper ends of the pair of side walls with a metal plate such as steel or aluminum alloy. A base portion of the base bone 21 is pivotally attached to the upper rocker 4 so that the base bone 21 is opened and closed.

An arcuate locking ring 36 projects from the upper connecting wall slightly proximal to the distal end of the base bone 21.
The middle main bone 22 is formed into a long and thin square bar shape by using a synthetic resin having elasticity such as vinyl chloride (PVC). As shown in FIGS. 4 and 5, a concave groove 38 is formed in the longitudinal direction on the upper and lower surfaces of the middle main bone 22. It is formed over the entire length. The base portion of the middle bone 22 is connected to the distal end portion of the base bone 21 via the first joint 25 so as to be bendable (swingable) around the first pivot shaft 39.

A spring locking body 41 is slidably fitted in the middle part of the middle bone 22. As shown in FIG. 4, the spring locking body 41 includes a fitting tube portion 42 slidably fitted to the middle bone 22 and a locking protrusion protruding from the fitting tube portion 42 toward the second spring wire 30. The locking projection 44 is provided with a locking hole 44 in the longitudinal direction of the middle bone 22.
As shown in FIG. 8, a metal connector 46 is fitted and fixed to the distal end portion of the middle bone 22 so as to project outward. The connection tool 46 includes a fixed cylinder portion 47 that is fitted and fixed to the distal end portion of the middle bone 22, and a flat plate-shaped connection plate portion 48 that protrudes outward from the fixed cylinder portion 47.

The pre-master bone 23 is formed in a long and thin round bar shape with a synthetic resin having elasticity such as vinyl chloride (PVC), and is thinner than the middle master bone 22. A base portion of the leading parent bone 23 is connected to a connecting tool 46 at a distal end portion of the leading parent bone 21 via a second joint 26 so as to be bent (swingable) around a second pivot shaft 49.
The first joint 25 is made of a metal plate such as steel or aluminum alloy, and has a fitting cylinder part 51 that is externally fitted and fixed to the base part of the middle master bone 22, and a base bone that is located outside the fitting cylinder part 51. The base bone pivot support portion 52 that pivotally supports the distal end portion 21 and a spring connection portion 53 that is located outside the base bone pivot support portion 52 and connects the end portion of the first spring wire rod 27 are integrally provided. .

  As shown in FIG. 6, the base bone pivot support portion 52 is formed in a U-shaped cross section having a pair of side walls 52 a and a lower connection wall 52 b that connects lower portions of the side walls 52 a, and the distal end portion of the base bone 21 is the base bone. It is inserted into the pivot portion 52 (between the pair of side walls 52a) and pivotally supported around the first pivot shaft 39 so that the base portion of the middle main bone 22 can be pivoted through the first joint 25 as described above. The distal end of the main bone 21 is connected to be bent around the first pivot shaft 39.

As shown in FIG. 7, the spring connecting portion 53 is formed in a U-shaped cross section having a pair of side walls 53 a and a lower connecting wall 53 b that connects lower portions of the side walls 53 a, and a spring is interposed between the side walls 53 a of the spring connecting portion 53. The locking shaft 55 is inserted and held.
The second joint 26 is made of a metal plate such as steel or an aluminum alloy, and has a fitting cylinder portion 58 that is externally fitted and fixed to the base portion of the front parent bone 23, and a middle master bone that is located outside the fitting cylinder portion 58. The central bone support portion 59 that pivotally supports the distal end portion of 22, and the spring connection portion 60 that is located outside the center bone support portion 59 and connects the end portion of the second spring wire 30 are integrally provided. .

  As shown in FIG. 8, the middle bone support portion 59 is formed in a U-shaped cross section having a pair of side walls 59 a and an upper connection wall 59 b that connects the upper portions of the side walls 59 a, and connects the connection tool 46 of the middle bone 22. The plate portion 48 is inserted into the middle master pivot portion 59 (between the side walls 59a) and pivotally supported around the second pivot shaft 49 so that the tip bone of the middle master bone 22 is placed on the distal end portion of the middle master bone 22 as described above. The base portion of 23 is connected via a second joint 26 so as to be freely bent.

As shown in FIG. 9, the spring connecting portion 60 is formed in a U-shaped cross section having a pair of side walls 60 a and an upper connecting wall 60 b that connects upper portions of the side walls 60 a, and a spring is interposed between the side walls 60 a of the spring connecting portion 60. The locking shaft 61 is inserted and held.
The first spring wire 27 is made of a highly elastic stainless steel wire, hard steel wire, piano wire, or the like, and one end of the first spring wire 27 is wound around the spring locking shaft 34 of the rib 18 so as to be swingable. Yes. The other end of the first spring wire 27 is wound around a spring locking shaft 55 of the first joint 25 so as to be swingable.

The second spring wire 30 is made of a highly elastic stainless steel wire, hard steel wire, piano wire, or the like. One end of the second spring wire 30 is bent into a hook shape and engaged with the locking ring 36 of the base bone 21. The other end of the second spring wire 30 is wound around the spring locking shaft 61 of the second joint 26 so as to be swingable.
An engagement protrusion 63 projecting in an arc shape toward the intermediate bone 22 is provided in the middle of the second spring wire 30, and the engagement protrusion 63 is inserted into the engagement hole 44 of the engagement protrusion 43. Thus, the middle portion of the second spring wire 30 is engaged and held by the spring locking body 41.

According to the above embodiment, when the lower rocker 5 is slid upward from the state in which the folding umbrella 1 is closed as shown in FIG. 2, the main bone 17 is opened and the lower cylinder portion 13 is opened as shown in FIG. 3. The repellent 6 is engaged, and the folding umbrella 1 is held in the opened state.
When a strong wind is received on the lower surface of the umbrella cloth 19 when the umbrella is opened, the middle main bone 22 of the main bone 17 is formed in a rod shape with the synthetic resin having elasticity together with the front parent bone 23. As indicated by the dashed line, the middle parent bone 22 and the leading parent bone 23 are largely bent upward due to the elastic deformation and reversed to the extent that the base bone 21 and the receiving bone 18 are elastically deformed slightly upward. Can be released smoothly from the lower side to the upper side, and the strong force of pressing upward on the parent bone 17 and the receiving bone 18 does not act, and the base bone 21, the middle parent bone 22, the leading parent bone 23, and the receiving bone 18 are plastic. It is possible to reliably prevent deformation and breakage.

In addition, the spring locking body 41 is slidably fitted to the middle part of the middle bone 22, and the middle part of the second spring wire 30 is engaged and held by the spring locking body 41. And pre-parent bone 23
When the spring is bent upward due to elastic deformation, the spring locking body 41 slides on the middle main bone 22 and can absorb the deviation of the warpage due to elastic deformation between the second spring wire 30 and the middle main bone 22 well. It is possible to smoothly warp the middle parent bone 22 and the leading parent bone 23 upward without any great resistance, and also from this point, the breakage and plastic deformation of the base bone 21, the receiving bone 18 and the middle parent bone 22 are effectively prevented. It becomes possible to do.

After all of the middle bone 22 and the leading bone 23 are warped upward, the lower part 5 is slid downward with respect to the middle rod 3, so that the middle part of the base bone 21 is received via the receiving bone 18. By pulling downward, all the middle bones 22 and the leading bones 23 can be easily returned to the original state without any upward warping.
In addition, since the middle main bone 22 is formed in a long and thin rod shape with the synthetic resin having elasticity together with the front parent bone 23, when the umbrella cloth 19 receives a strong wind from the upper side, the middle main bone 22 and the front parent bone 23 are greatly elastically deformed downward. Thus, it is possible to prevent the base bone 21 and the receiving bone 18 from being elastically deformed downward, and the base bone 21 or the receiving bone 18 is greatly elastically deformed downward to be plastically deformed or damaged. Can be prevented.

  Further, since the first joint 25 is made of metal, the base bone 21 and the middle parent bone 22 can be connected with each other even though the middle bone 22 is formed of an elastic synthetic resin. Thus, the connection between the base bone 21 and the middle bone 22 can be made strong, and the connection portion between the base bone 21 and the middle bone 22 is unexpectedly moved vertically or horizontally during use of the folding umbrella 1 or the like. Prevents backlash.

  In addition, the second joint 26 is made of metal, and a metal connector 46 is fitted and fixed to the distal end portion of the middle bone 22 so as to protrude outward, and the middle bone 22 is connected to the second joint 26 via the connector 46. Are pivotally supported around the second pivot shaft 49, so that the middle parent bone 22 and the front parent bone 23 are formed in a rod shape with a synthetic resin having elasticity. The connection with the leading parent bone 23 can also be made of metal, the connection between the middle parent bone 22 and the leading parent bone 23 can be made robust, and the middle parent bone 22 and the leading parent bone during use of the folding umbrella 1 or the like. It can prevent that the connection part with 23 is rattled in the up-down direction or the horizontal direction unexpectedly.

In the above-described embodiment, the middle main bone 22 is formed in a square bar shape with a square section by a synthetic resin having elasticity. Instead, the middle main bone 22 has a round bar shape, a triangular square bar shape in cross section, and a cross section. It may be formed in an elliptical rod shape or other rod shape. Further, the pre-parent bone 23 may be formed in a square bar shape or other bar shapes.
Further, in the above-described embodiment, the receiving bone 18 is formed in a U-shaped cross section by a metal plate. Instead, the receiving bone 18 may be formed in a U-shaped cross section by a hard synthetic resin or the like. However, you may form the receiving bone 18 in cross-sectional shapes other than U-shaped cross section.

DESCRIPTION OF SYMBOLS 1 Folding umbrella 3 Middle stick 4 Upper roll 5 Lower roll 17 Master bone 18 Receiving bone 21 Base master bone 22 Middle master bone 23 Lead parent bone 25 First joint 26 Second joint 27 First spring wire 28 Four-node link mechanism 30 Second spring wire rod 31 Four-bar linkage mechanism 41 Spring locking body 42 Fitting cylinder portion 43 Locking protrusion 44 Locking hole 46 Connecting tool 49 Second pivot shaft 63 Engaging protrusion

Claims (4)

A plurality of main bones (17) whose base ends are pivotally attached to an upper rocker (4) fixed to the distal end of the middle rod (3), and a lower slidably fitted to the middle rod (3). A plurality of bones (18) whose proximal ends are pivotally attached to the rocker (5) and whose distal ends extend radially, the parent bone (17) includes a base parent bone (21), a middle parent bone (22), and a leading parent bone (23 The first joint (25) extending and projecting from the base of the middle master bone (22) and the second joint (26) extending and projecting from the base of the front parent bone (23) are sequentially provided. It is configured to be able to bend and stretch in three folds,
The distal end of the rib (18) is pivotally supported by the intermediate portion of the base bone (21), the vicinity of the pivot to the base bone (21) of the rib (18) and the protruding end of the first joint (25) The first spring wire (27) is connected between the base bone (21), the receiving bone (18) and the middle master bone (22) so as to form a four-joint link mechanism (28). (21) Between the vicinity of the pivot to the middle bone (22) and the protruding end of the second joint (26), between the base bone (21), the middle bone (22), and the leading bone (23). A folding umbrella to which a second spring wire (30) is connected so as to form a four-bar linkage (31),
The middle main bone (22) is formed in a rod shape with a synthetic resin having elasticity together with the front parent bone (23), and the first joint (25) and the second joint (26) are made of metal. Folding umbrella.   A spring locking body (41) is slidably fitted in the middle part of the middle bone (22), and the middle part of the second spring wire (30) is engaged and held by the spring locking body (41). The folding umbrella of Claim 1 characterized by the above-mentioned.   An engagement protrusion (63) projecting toward the middle main bone (22) is formed in the middle of the second spring wire (30), and the spring locking body (41) is slidable on the middle main bone (22). It has a fitting tube portion (42) to be externally fitted and a locking projection (43) protruding from the fitting tube portion (42) toward the second spring wire (30). ) Is provided with a locking hole (44) in the longitudinal direction of the middle bone, and the engaging protrusion (63) is inserted and held in the locking hole (44) of the locking protrusion (43). The folding umbrella of Claim 2.   A metallic connector (46) is externally fitted and fixed to the distal end portion of the middle bone (22), and the middle bone (22) is pivoted to the second joint (26) via the connector (46). The folding umbrella according to any one of claims 1 to 3, wherein the folding umbrella is pivotally supported around a support shaft (49).

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