JP2018122047A - folding umbrella - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress breakage of a stick when it comes into contact with metallic springs.SOLUTION: The umbrella includes: a stick having a first tube body 2a and a second tube body 2b which is provided in a manner that can be stored in the first tube body 2a from the tip end side 2a1; a metallic spring 9 provided in the second tube body; and a reinforcement member 20 which is provided in the tip end side 2a1 of the first tube body 2a. The reinforcement member 20 may be provided in the inner peripheral face of the first tube body 2a or in the outer peripheral face thereof. Also, the reinforcement member 20 may be provided both in the inner peripheral face and in the outer peripheral face of the first tube body 2a.SELECTED DRAWING: Figure 2a

Description

  The present invention relates to a folding umbrella.

  A known umbrella typically includes an elongated middle bar, a handle provided at the lower end of the middle bar, an upper ring provided on the upper part of the middle bar, and a plurality of parent bones extending radially from the upper pole. And a lower skull provided on the middle rod so as to be slidable along the axial direction thereof, and a plurality of bones having one end accommodated in the lower skull and the other end connected to each of the plurality of master bones. And a tension cloth covering the plurality of main bones.

  The folding umbrella is configured such that the middle rod can be expanded and contracted, and the main bone and the tension umbrella can be folded. Specifically, the folding umbrella has a hollow large tube and a small tube that can be accommodated in the large tube. When the folding umbrella is closed, the small tube is accommodated in the large tube. At the same time, the folding umbrella is folded small by folding the rib, the stretcher, and the upholstery cloth. On the other hand, when the umbrella is opened, the small pipe is pulled out from the large pipe, and the ribs, stretchers, and the tension cloth are developed, so that the folding umbrella is in the opened state.

  Conventional folding umbrellas are disclosed in, for example, Japanese Patent Application Laid-Open No. 2015-109942, Japanese Patent Application Laid-Open No. 10-179223, Japanese Patent Application Laid-Open No. 05-220008, Japanese Patent Application Laid-Open No. 04-242603, and Japanese Utility Model Registration No. 3012249. Has been.

Japanese Patent Laying-Open No. 2015-109942 JP-A-10-179223 Japanese Patent Laid-Open No. 05-220008 JP 04-242603 A Registered Utility Model No. 30212249

  Conventional folding umbrellas are often made of aluminum or titanium from the viewpoint of lightness and robustness. The inventor of the present application is considering to form a folding umbrella middle rod from a prepreg material for further weight reduction.

  The inventor of the present application has found that when the center rod of the folding umbrella is made of a prepreg material, a problem that does not occur with the center rod made of aluminum or titanium occurs. The inventor has found a problem that, for example, an intermediate rod made of a prepreg material is easily damaged at a portion in contact with a metal repellent.

  The object of the present invention is to alleviate or eliminate the problems caused by making the middle bar made of prepreg material. One of the specific objects of the present invention is to suppress the breakage of the intermediate rod when it comes into contact with a metal repellant. Other objects of the present invention will become apparent by referring to the entire specification.

  The folding umbrella according to an embodiment of the present invention includes a first tubular body, and a middle rod having a second tubular body provided in the first tubular body so as to be accommodated from the distal end side thereof, A metal repellency provided on the second tubular body, and a reinforcing material provided on the distal end side of the first tubular body. The reinforcing material may be provided on the inner peripheral surface of the first tubular body, or may be provided on the outer peripheral surface of the first tubular body. Moreover, the said reinforcing material may be provided in both the internal peripheral surface and outer peripheral surface of a said 1st pipe body.

  When the second tubular body is accommodated in the first tubular body, a metallic splash provided on the second tubular body hits the tip of the first tubular body. According to the embodiment, since the reinforcing material is provided on the distal end side of the first tubular body, it is possible to reinforce the portion of the first tubular body that hits. Thereby, damage to the tip of the first tubular body can be suppressed.

  In one embodiment of the present invention, the reinforcing member extends from the tip of the first tubular body to the position of the repelling when the folding umbrella is in a closed state.

  According to the said embodiment, the whole site | part which contacts metal repellency among 1st pipes can be reinforced.

  In one embodiment of the present invention, the reinforcing material is formed of a first prepreg sheet, and the first prepreg sheet includes reinforcing fibers oriented in the circumferential direction of the center rod.

  According to the embodiment, since the reinforcing material is formed from the prepreg sheet, the reinforcing material can be reduced in weight. In addition, since the reinforcing fibers included in the reinforcing material are oriented in the circumferential direction of the center rod, they have a strong tensile strength against the tensile force that acts when they come into contact with metallic repellent.

  According to the embodiment of the present invention, it is possible to suppress the breakage of the center rod when the center rod comes into contact with the metal repellent.

It is a front view which shows typically the folding umbrella by one Embodiment of this invention. In the folding umbrella of FIG. 1, it is a figure which shows typically the relationship between the repelling 9 at the time of accommodating the 2nd housing 2b in the 1st housing 2a, and the 1st housing 2a. In FIG. 2a, the repelling 9 is not in contact with the first tubular body 2a. In the folding umbrella of FIG. 1, it is a figure which shows typically the relationship between the repelling 9 at the time of accommodating the 2nd housing 2b in the 1st housing 2a, and the 1st housing 2a. In FIG. 2b, the second housing 2b is further inward of the first tubular body 2a than the position shown in FIG. 2a. FIG. 2 is a diagram schematically showing a relationship between a flip 9 and a first casing 2a when the second casing 2b is accommodated in the first casing 2a in one folding umbrella. In FIG. 2c, the second housing 2b is pushed in as far as the housing 2a. It is sectional drawing which shows typically the cross section which cut | disconnected the center bar of FIG. 2 by the II line. It is a schematic diagram which shows a part of manufacturing process of the tubular body of the middle stick of the folding umbrella which concerns on one Embodiment of this invention. In the folding umbrella by other embodiment of this invention, it is a figure which shows typically the relationship between the repelling 9 at the time of accommodating the 2nd housing 2b in the 1st housing 2a, and the 1st housing 2a. . In FIG. 5a, the repelling 9 is not in contact with the first tubular body 2a. In the folding umbrella by other embodiment of this invention, it is a figure which shows typically the relationship between the repelling 9 at the time of accommodating the 2nd housing 2b in the 1st housing 2a, and the 1st housing 2a. . In FIG. 5b, the second housing 2b is further inward of the first tubular body 2a than the position shown in FIG. 2a. In the folding umbrella by other embodiment of this invention, it is a figure which shows typically the relationship between the repelling 9 at the time of accommodating the 2nd housing 2b in the 1st housing 2a, and the 1st housing 2a. . In FIG. 5c, the 2nd housing 2b is pushed into the back of the housing 2a. It is sectional drawing which shows typically the cross section which cut | disconnected the center rod of FIG. 2 by the II-II line.

  Hereinafter, various embodiments of the present invention will be described with reference to the drawings as appropriate. In addition, the same referential mark is attached | subjected to the component which is common in each drawing. It should be noted that the drawings are not necessarily drawn to scale for convenience of explanation.

  FIG. 1 is a front view of a folding umbrella 1 according to an embodiment of the present invention. A folding umbrella 1 in FIG. 1 is a hook-type folding umbrella. The present invention can be applied not only to a hook-type folding umbrella but also to a topless type or any other type of folding umbrella.

  As shown in the figure, a folding umbrella 1 according to an embodiment of the present invention includes a center rod 2, an upper skull 3, a lower skull 4, a plurality of master bones 5, a plurality of receiving bones 6, a handle 7, Mainly comprises a repelling 8 and a top repelling 9.

  In one embodiment of the present invention, the intermediate rod 2 includes a first tubular body 2a and a second tubular body 2b. Both the first tube body 2a and the second tube body 2b are formed in a hollow elongated shape. The outer shape of the second tubular body 2b is smaller than the inner diameter of the first tubular body 2a. Thereby, the 2nd pipe body 2b is accommodated in the 1st housing 2a from the front end side. The middle rod 2 may include three or more tubes.

  In one embodiment of the present invention, the upper wheel 3 is provided near the tip of the center rod 2. In the illustrated embodiment, the upper handle 3 is provided in the vicinity of the distal end of the second tubular body 2 b on the distal end side of the middle rod 2.

  In one embodiment of the present invention, the bottom pole 4 is formed in a hollow cylindrical shape. The bottom pole 4 is provided on the middle rod 2 so as to be slidable along the axial direction thereof. The bottom pole 4 is penetrated by the middle rod 2.

  In one embodiment of the present invention, each of the plurality of master bones 5 includes an original master bone 5a extending radially from the upper crossbone 3, a leading master bone 5b pivotally supported at the tip of the original master bone 5a, and a bone receiving bone 6 is connected to a dowel 5c, and a tip 5d provided on the tip parent bone 5b. The original master bone 5 a is pivotally supported by the upper handle 3 so as to be tiltable with respect to the axial direction of the intermediate rod 2. Although not shown in the drawing, tension cloth is attached to the plurality of main bones 5.

  In one embodiment of the present invention, each of the plurality of receiving bones 6 is housed in the lower skull 4 and the other end is connected to a corresponding one of the plurality of master bones 5.

  Two thin through holes (not shown) extending in the axial direction are formed in the second tubular body 2b. Of these two through holes, a through hole 8 is provided in the through hole on the hand side, and an upper flip 9 is provided in the through hole on the tip side. The lower repellant 8 and the upper repellant 9 are both made of a metal plate. The lower repelling 8 and the upper repelling 9 are always urged so as to protrude outward from the through hole of the second tubular body 2b. The lower repelling 8 may be omitted.

  The bottom pole 4 is provided with a slit (not shown) with which the top flip 9 is engaged. When the folding umbrella 1 is opened, when the bottom roller 4 is slid to the position of the top leaf 9, the top leaf 9 is engaged with the slit of the bottom blade 4, and the folding umbrella 1 is opened (open state). Retained.

  When the folding umbrella 1 is opened from the posture shown in FIG. 1, the first tube 2 a is pulled out from the second tube 2 b, and the lower ring 4 is slid to the position of the upper flip 9. By moving the lower wheel 4 upward, the parent bone 5 and the receiving bone 6 are deployed. In other words, the angle between the main bone 5 and the receiving bone 6 and the axial direction of the middle rod 2 is increased by moving the lower skull 4 upward (on the distal end side). When the master bone 5 is deployed, the upholstery cloth attached to the master bone 5 is also deployed. As described above, when the lower peg 4 is slid to the position of the upper peg 9, the upper peg 9 is engaged with the slit of the lower peg 4. Thereby, the folding umbrella 1 is hold | maintained in an open umbrella state.

  On the other hand, when the folding umbrella 1 is folded from the posture shown in FIG. 1, the upper peg 9 and the lower peg 4 are disengaged by sliding the lower peg 4 toward the hand side, and the main bone 5 and the receiving bone 6. Can be folded. That is, the angle between the original master bone 5a and the receiving bone 6 and the axial direction of the center rod 2 is reduced by moving the lower crossbone 4 downward (on the proximal side), and the leading parent bone 5b Can be folded. In addition, the second tubular body 2b is accommodated in the first tubular body 2a simultaneously with the sliding of the lower wheel 4 toward the proximal side or separately from the sliding of the lower wheel 4 toward the proximal side.

  Next, with reference to FIG. 2 a-FIG. 2 c and FIG. 3, the relationship between the upper repelling 9 at the time of accommodating the 2nd housing 2b in the 1st housing 2a and the 1st housing 2a is demonstrated. . 2a to 2c are schematic views each showing a joint portion between the first casing 2a and the second casing 2b by cutting the first casing 2a. As shown in these drawings, in one embodiment of the present invention, a sheet-like reinforcing material 20 is provided on the inner peripheral surface of the first tubular body 2a. In the illustrated embodiment, the reinforcing member 20 extends by a predetermined length from the distal end 2a1 of the first tubular body 2a toward the proximal side. The reinforcing member 20 may extend over the entire length of the first tubular body 2a.

  In FIG. 2a, since the second casing 2b is pulled out from the first casing 2a to some extent, the upper repelling 9 is not in contact with the first tubular body 2a. When the second housing 2b moves further from the position of FIG. 1 toward the inside of the first housing 2a, as shown in FIG. 2b, the upper repelling 9 reinforces in the vicinity of the tip 2a1 of the first housing 2a. Collide with material 20. When the second casing 2b further moves toward the inside of the first casing 2a, the upper repelling 9 is pushed inward of the second tubular body 2b by the reinforcing member 20 against the urging force. The second housing 2b can enter the inside of the first housing 2a up to the position shown in FIG. 2c. That is, in FIG. 2c, the 2nd housing 2b is accommodated in the innermost part of the 1st housing 2a. As shown in FIG. 2c, the reinforcing member 20 extends to the position of the upper flip 9 when the second casing 2b is housed in the innermost part of the first casing 2a.

  As described above, when the second tubular body 2b is accommodated in the first tubular body 2a, the upper repel 9 hits the tip of the first tubular body 2a. According to the embodiment, since the reinforcing member 20 is provided on the distal end side of the first tubular body 2a, the portion of the first tubular body 2a that collides with the upper repelling 9 can be reinforced. Thereby, damage to the tip of the first tubular body 2a can be suppressed. Further, since the reinforcing member 20 extends to the position of the upper rebound 9 when the second casing 2b is accommodated to the innermost part of the first casing 2a, the upper portion of the first tubular body 2a It is possible to reinforce the entire portion in contact with the repellent 9.

  When the folding umbrella 1 has the lower repellency 8, when the second tubular body 2b is accommodated in the first tubular body 2a, the lower shed 8 hits the tip and the inner peripheral surface of the first tubular body 2a. The reinforcing member 20 may extend to the position of the lower repelling 8 when the second casing 2b is housed to the innermost part of the first casing 2a. For example, when the lower repellant 8 is positioned at the proximal end of the inner peripheral surface of the second casing 2b when the second casing 2b is accommodated to the innermost part of the first casing 2a, The reinforcing member 20 may be provided over the entire length of the first tubular body 2a.

  Next, with reference to FIG. 4, the production method of the 1st housing | casing 2a and the reinforcing material 20 of the folding umbrella 1 is demonstrated. First, a mandrel 100 having a diameter gradually reduced toward the tip and prepreg sheets 102a and 120 are prepared. The mandrel 100 may be configured to have the same diameter over its entire length. The prepreg sheet 102 a corresponds to the first tubular body 2 a, and the prepreg sheet 120 corresponds to the reinforcing material 20. The prepreg sheets 102a and 120 are formed from a prepreg sheet obtained by impregnating a matrix resin into reinforcing fibers oriented in a predetermined direction. As the reinforcing fiber, for example, various reinforcing fibers such as carbon fiber, glass fiber, and aramid fiber can be used. As the matrix resin, for example, thermosetting resins such as epoxy, pismaleimide, polyimide, and phenol can be used. In one embodiment of the present invention, the reinforcing fibers of the prepreg sheet 102a are oriented in a direction parallel to the mandrel axial direction. In one embodiment of the present invention, the reinforcing fibers of the prepreg sheet 120 are oriented in a direction perpendicular to the axial direction of the mandrel.

  The prepreg sheet 120 and the prepreg sheet 102a are wound around the mandrel 100 in this order. Next, the prepreg sheet 120 and the prepreg sheet 102a wound around the mandrel 100 are fired to obtain a fired body. Next, the mandrel 100 is decentered from the fired body, and a polishing process or a coating process is performed as appropriate to obtain the first tubular body 2a in which the reinforcing material 20 is formed on the inner peripheral surface on the distal end side. The fired prepreg sheet 102 a becomes the first tubular body 2 a, and the fired prepreg sheet 120 becomes the reinforcing material 20.

  The second tubular body 2b may also be formed from a prepreg sheet, like the first tubular body 2a.

  The upper skull 3, the lower skull 4, the master bone 5, the receiving bone 6, the handle 7, the lower repellant 8, and the upper repellant 9 can be formed by a known method, and a specific description thereof will be omitted.

  The reinforcing fibers contained in the first tubular body 2a thus formed are oriented in the axial direction of the first tubular body 2a. By orienting the reinforcing fibers in the axial direction of the first tubular body 2a, the bending rigidity of the first tubular body 2a can be enhanced.

  In one embodiment of the present invention, the reinforcing fibers included in the reinforcing member 20 are oriented in the circumferential direction around the axis of the first tubular body 2a. As shown in FIG. 2 b and FIG. 2 c, when the lower repellent 8 or the upper repellent 9 comes into contact with the reinforcing member 20, a tensile force acts on the reinforcing member 20 in the circumferential direction. By orienting the reinforcing fibers of the reinforcing material 20 in the circumferential direction of the first tubular body 2a, the tensile strength against the tensile force in the circumferential direction can be reinforced. The reinforcing fibers contained in the reinforcing material 20 may be oriented in the axial direction of the first tubular body 2a. Further, the reinforcing fibers included in the reinforcing material 20 may be plain weave, twill weave, or woven fabric knitted by other methods.

  According to the said embodiment, since the reinforcing material 20 is formed from the prepreg sheet, it can reduce in weight rather than the case where it forms from a metal.

  Next, a folding umbrella according to another embodiment of the present invention will be described with reference to FIGS. 5a to 5c and FIG. In the embodiment shown in FIGS. 5 a to 5 c and FIG. 6, a reinforcing material 30 is provided instead of the reinforcing material 20. This reinforcing material 30 is different from the reinforcing material 20 in that it is provided on the outer peripheral surface of the first housing 2a. Except for the arrangement position, the reinforcing member 30 is the same as the reinforcing member 20. That is, the reinforcing material 30 may also be formed from a prepreg sheet, and the reinforcing fibers of the prepreg sheet may be oriented in the circumferential direction.

  When the second housing 2b moves toward the inside of the first housing 2a, as shown in FIG. 5b, the lower repelling 8 collides with the tip 2a1 of the first housing 2a. A reinforcing material 30 is provided in the vicinity of the tip 2a1 of the first tubular body 2a, and the vicinity of the tip 2a1 of the first tubular body 2a is reinforced by the reinforcing material 30.

  When the second casing 2b moves further from the position of FIG. 5b toward the inside of the first casing 2a, the lower repelling 8 is pushed inward of the second tubular body 2b by the reinforcing member 20. The second housing 2b can enter the first housing 2a up to the position shown in FIG. 5c. In FIG. 5c, the 2nd housing 2b is accommodated to the innermost part of the 1st housing 2a. As shown in FIG. 5 c, the reinforcing member 20 extends to the position of the lower repelling 8 when the second casing 2 b is accommodated to the innermost part of the first casing 2 a. As described above, the entire portion of the first tubular body 2a that comes into contact with the lower repellant 8 can be reinforced by the reinforcing member 30.

  The dimensions, materials, and arrangement of each component described in this specification are not limited to those explicitly described in the embodiments, and each component may be included in the scope of the present invention. Can be modified to have different dimensions, materials, and arrangements. In addition, components that are not explicitly described in the present specification can be added to the described embodiments, or some of the components described in the embodiments can be omitted.

  For example, when the center rod 2 is composed of three or more tubes and the tube having the upper repelling 9 is accommodated in another tube, the upper repelling 9 collides with the other tube. In this case, a reinforcing material can be provided on the distal end side of the other tubular body.

DESCRIPTION OF SYMBOLS 1 Folding umbrella 2 Middle stick 2a 1st pipe body 2b 2nd pipe body 3 Upper skull 4 Lower skull 5 Parent bone 6 Bone 8 Lower repelling 9 Upper repelling 20,30 Reinforcement material

Claims (6)

An intermediate rod having a first tubular body, and a second tubular body provided in the first tubular body so as to be accommodated from the tip side;
Metal repelling provided on the second tubular body;
A reinforcing material provided on the distal end side of the first tubular body;
Folding umbrella with.   The reinforcing member extends from a tip end of the first tubular body to a position of the repelling when the second tubular body is housed to the innermost part of the first tubular body. Folding umbrella as described in   The folding umbrella according to claim 1 or 2, wherein the reinforcing member is provided on an inner peripheral surface of the first tubular body.   The folding umbrella according to claim 1 or 2, wherein the reinforcing member is provided on an outer peripheral surface of the first tubular body. The reinforcing material is formed from a first prepreg sheet,
The folding umbrella according to any one of claims 1 to 4, wherein the first prepreg sheet includes reinforcing fibers oriented in a circumferential direction of the center rod. The first tubular body is formed of a second prepreg sheet,
The folding umbrella according to any one of claims 1 to 5, wherein the second prepreg sheet includes reinforcing fibers oriented in an axial direction of the center rod.

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