TW200412873A - Tri-fold collapsible umbrella - Google Patents

Abstract

The present invention relates to a tri-fold collapsible umbrella, which comprises first, second, and third sections of ribs that are pivotally connected together by means of pivoting members and fitting-pivoting members, which, together with the aid of long and short driving bars, allows the ribs and stretchers to form a smoothly-operable tri-fold collapsing mechanism. In addition, the ribs and stretchers, the pivoting members, and the fitting-pivoting members are made of plastics, which allows for non-riveted joint between the ribs and stretchers of the tri-fold collapsible with no jamming caused by corrosion or breaking and forming a more compact size after collapsed.

Description

200412873 V. Description of the invention (l) [Technical field to which the invention belongs] The present invention relates to a three-folding umbrella, especially a three-stage folding umbrella with a reinforced umbrella bone, convenient assembly, and a small volume after folding. By. [Previous technology] According to the present technology in the field of umbrellas, many umbrellas have been improved for folding umbrella structures. Among them, the typical three-section folding umbrella structure, as shown in Figure 8, is aimed at the umbrella bone structure. However, if we check the improvement, the folding joints 71-77 of the main umbrella bone 70 are still pivoted by the general riveting method. Not only can it be assembled with the help of cumbersome riveting procedures and semi-manual operations in manufacturing, but also The riveting quality control of the joint 71-77 is not easy, and a folding umbrella has at least 42 to 56 pivot joints. As long as one of the pivot joints has poor quality control in manufacturing, it is enough to cause a three-fold folding umbrella. After being used for a period of time, the umbrella bone is likely to cause the articulation joint to rust and become stuck, and the riveted part is also where the stress is concentrated. A slight stress may easily cause the umbrella fracture. Although the use of FRP (Fiberglass Reinforced Plastics) makes the umbrella frame quite large, which causes difficulties in storage, packaging, and transportation. Therefore, the general FRP umbrellas are made of non-foldable large golf ball umbrellas, which are made of fiber-reinforced plastic. The manufactured umbrella can solve the shortcomings of the rivet umbrella bone, which is easy to rust. However, the structure of the umbrella bone of the FRP umbrella is generally considered to be a round rod for the support of the umbrella frame. For the round rod body to be pivotally connected with the umbrella nest and the bone, both ends and middle of the FRp round rod body need to be fitted with plastic connecting components and pivoting components, respectively.

200412873 S: Description of the invention (2) Therefore, although FRP umbrellas have been developed for more than 20 years, the retractable FRP umbrellas are still delayed. It is not possible to ask the market for the reason. * [Contents of the Invention] In view of this, the inventor has continued to improve the research and development, and finally broke through the bottleneck of FRP umbrella manufacturing technology, and invented a brand new three-fold umbrella 0, from-eight-~ ^ death Goods one mile, two flats, umbrellas that make the collection smooth and not easy to jam. ^ Another object of the present invention is to provide a tri-fold umbrella with a lightweight skeleton and convenient for storage, packaging and transportation. Yet another object of the present invention is to provide a tri-fold umbrella that makes the skeleton of the umbrella bone more durable. In order to achieve the above object, the tri-folding umbrella of the present invention includes a central right side i :: the top has an upper nest seat, the main shaft is located on the right has a lower nest seat, and i and the lower nest seat have the same isometric division. Cut the grooves, and make the upper nest seat pivot a plurality of first main umbrella bones, and the lower nest seat pivot a plurality of branch umbrella bones, which is characterized by one or two groups relative to the number of cut grooves of the lower nest seat. Umbrella bones, where each of the umbrella bones ^ t is fixedly connected to the lower nest seat connecting pipe to pivotally set at the opposite a, j :: of the lower nest seat, and the other end of each umbrella bone is fixed to two pivot grooves to the edge Door; ΐ: sleeve pivot groove 'makes the first set of pivot pieces on the side surface of the sleeve, and the first set of JL and the first set of 柩 pieces are different from the main shaft and the J is convex with a U-shaped closed ring Ring; 200412873 V. Description of the invention (3) A set of one end of a main umbrella bone which is slotted with respect to the upper nest seat is fastened to the opposite slot of the first, and two sets of pivot members of the first main umbrella bone are set from the end. At the position of the pivot groove, a pivot rod is horizontally arranged on the other surface from the end edge, and a first pivot member is protruded so that the first main umbrella bone is located on the upper nest seat. Each first pivot is pivotally connected. The rods are inserted to form a pivot joint; one set is opposite to the first main umbrella bone, and the two main umbrella bones are relative to the first main umbrella bone, so that each second pivot member can be inserted for the first talent to form a locust joint, and the second one A perforated flat part, and each set of cymbals, the third set of inserts at a distance from the end of the third set of pivot pieces to the end of the set of pivot grooves to the end of a group of three main umbrella bones relative to the second main umbrella bone Pieces, so that each third pivoting member can be used to form a pivoting connection, and each r-th main connection forms a supporter; a group opposite to one end of the first main umbrella bone is relatively hooked on the first, and At the other end of the long tie rod, there are a number of first main umbrella bones, in which each of the first upper nest seat connecting pipes is pivotally arranged at the other end of the upper nest seat, and a second set of pivot members is fixedly connected, and the first shell is inserted through a set of pivot grooves. So that the second set of pivot pieces is different from the u-shaped ring that has a U-shaped closed ring on the main shaft; if the tube is connected to the second set of pivot pieces, a sleeve is provided to support the umbrella bone The second main umbrella bone of the first set of pivot members, wherein each of the first ends is fixedly connected to a pivot joint of a second set of pivot members connected to a main umbrella The direction of the umbrella bone extends from the second main umbrella bone to the other end, which is fixed to a third section and a set position through a set of pivot grooves, and a pivot rod is horizontally arranged between the edges; One end is fastened to a third pole which is pivotally connected to the main pole of the main umbrella bone and the second set of cymbals. The U-shaped ring of the sleeve is hooked to the third part of the third main umbrella bone 200412873

The flat part of the connector is perforated to link the first and third main umbrella bones; a set of short pull rods relative to the number of branch bones, of which each short pull is only 1, which is relatively hooked to the first set of branch bones The U-shaped ring of the pivot member, and the other end of ==, is oppositely hooked on the flat two perforations of the second pivot member of the second main umbrella bone, so as to link the branch and the second main umbrella bone. .邛 In order to make the above-mentioned objects, effects, and features of the present invention more specific, it is described below with reference to the preferred embodiments in conjunction with the drawings and figures. [Embodiment]

As shown in Figs. 1, 2 and 3, the present invention is provided with an equiangular distribution of a plurality of slits 120 at the top of the main shaft u of the folding umbrella body ο and an upper nest 12 and a lower end. Isometric angular distribution of most nests below 13

The upper and lower nest seats 12 and 13 are respectively provided with a plastic upper nest connector 20 and a lower nest connector 21 in each of the slits 120 and 130 of the upper and lower nest seats 12, 13 respectively. A flat portion 200, 210 is provided at the inner end of each of the upper and lower nests, so that each of the upper and lower nest seat connecting members 20, 21 can be pivoted in the cutouts 120, 130 of the upper and lower nest seats 12, 13 respectively. It is in a swinging state; and the outer ends of the upper and lower nest seat connecting members are each recessed with a socket 201, 211, which can be respectively connected with a first main umbrella bone 14 and an umbrella bone 丨 5. See Figures 1, 2, and 3 for eye matching. When plugged into each of the first main umbrella bones 4 of each upper nest connector 20, a first pivot member 30 can be set respectively. A U-shaped groove 302 is recessed in the middle of the first pivoting member 30, and the two ends of the U-shaped groove ′ protrude outwardly from the first extension 300 and the second rod-shaped respectively.

Page 8 200412873 V. Description of the invention (5) Extension portion 301. The first and second extension portions 300 and 301 respectively penetrate one or two connected perforations 3000 and 3010 (as shown in Figs. 1 and 3). The U The font groove 302 communicates with the perforations 30 00 and 3010 of the first and second extensions 300 and 301, and the inside of the groove 3 2 faces the side wall of the second extension 3 0 1, and is obliquely cut to form a Guide slope 303 (as shown in Figure 3). Also as shown in Figs. 1 to 3, the ends of the umbrella bones 15 which are inserted into the lower nest connecting members 21 are also connected to a first set of pivot members 40, and each of the first set of pivot members 40 is flat. Block, the inner end of each first set of pivot pieces 40 is a socket 400 for the 15 ends of each umbrella bone, and a set position of the outer end portion is provided to penetrate one A rectangular sleeve pivot groove 402 that communicates with the upper and lower sides, and is located between the edges of the sleeve pole groove 402¾¾, a pivot rod 401 (as shown in FIG. 3) that can be rearwardly inserted into the first pivot member groove Mg; In addition, at the center of the top surface of each first set of pivot members 40, a through slot 403 of the pivot member and a card slot 404 that does not penetrate the first set of pivot members (as shown in Figs. 1 and 3) make each In the through grooves 403 of the first set of pivot pieces 40, a U-shaped ring 405 can be embedded in each. The open side of each u-shaped ring 405 extends horizontally to the two sides with two abutment ends 4050 (such as the first As shown in Figures i and 3), the U-ring 405 can be inserted into the through slot 4 of each first pivot joint 40; the horizontal stop end 4500 of each U-shaped% 405 rests against the first At the bottom of the sleeve _ its closed end that is u-shaped can be convex ^ 第 =

Bottom surface (as shown in Figure 3). 1400U Please refer to FIG. 43 for reference. The ends of each umbrella 14 of the present invention are respectively connected with a plastic flat block hinge ... The inner ends of each second set of pivot members 41 are available for Each first ^

Page 9 200412873 V. Description of the invention (6) 14 The end is inserted and fixed into the insertion hole 41〇, and each second set of pivot members 41 is provided at a set position from the outer end, and a rectangular sleeve pivot groove 412 is provided therethrough , And each at the outer end of the sleeve pole groove 412, there is also a pivot bar 4Π (as shown in Figure 3);

In the center of each second set of pivot members 41, a through slot 413 and a slot 414 (as shown in FIG. 3) which is located at the position of the through slot 413 but is not penetrated; Inside, each υ-ring 415 can be embedded, and the U-rings 415 on the open side of the U-rings 415 extend horizontally to the two sides of the two end 4150, so that each U-ring 415 can be embedded in each second set Inside the through groove 413 of the pivot member 41, and make the horizontal stop ends 41 50 of each υ-shaped ring 415 abut against the bottom surface of the card slot 414, and the closed end of the υ shape can just protrude from the second set of pivot members 41. Outside the other side (as shown in Figure 3).

Similarly, please refer to FIG. 1 to FIG. 3, wherein the folding umbrella body 10 ′ of the present invention is also provided with a second main umbrella bone 16 corresponding to the first main umbrella bone 14, and each of the second main umbrella bones 16 The inner end is connected with a second pivoting member 31 made of plastic. The pivoting member 31 has a recess 3 1 2 recessed in the middle for the pivoting rod 411 of the second set of pivoting members 41. The two ends respectively protrude outward from the first extension portion 310 and the second extension portion 311 in the shape of a round rod, and protrude a plate-shaped curved flat portion 31 on the free end of the first extension portion 31. 1. The free end portion of the curved flat portion 3 1 0 1 passes through a perforation 31 〇2, the second extension portion 3 丨 i; and the groove 312 of each second pivot member 31 faces the side of the second extension portion 311. On the wall, a chamfered surface 313 is formed obliquely, so that a recessed hole 3 1 00 is recessed at a position of the groove of each second pivot member 31 relative to the first extension 3 10, and then from the groove 312 The guide inclined surface 313 is provided with a penetration penetrating through the second extension 3

Page 10 200412873

The perforations 3100, 3110, and 3110 are deeper. The inner end of each socket is the same, and the third one is a round rod. Please refer to the same 10, and the third one should also explain the formation of the third umbrella. Make the U-shaped groove 312 more depressed than the first (see FIG. 3). As shown in Figs. 1 to 3, each of the 筮-surely 々 々-the outer end of the first main umbrella bone 16 of the valley, a plastic second set of frame members 42, Gan Shi π π 1 ^ 1 / The third set of pivot members 42 can be used for each of the first main umbrella bone 1 β Xibdi IX, ^ ^, 0 + month "outer and inset fixed socket 420, the position of the top of the pivot member 42 is set from the end Where, it runs through an upper and rectangular sleeve pivot groove 421, and makes each child from the outer end edge of the hinged hinge groove 421, horizontally set the pivot post 422 (as shown in Figure 3). As shown in Figs. 1 to 3, wherein the folding umbrella body of the present invention is provided with a third main umbrella bone 17 with a number corresponding to the first main umbrella bone 14, and the inner end of the umbrella bone 17 is connected with a third pivot joint of plastic Piece 32, and the outer end of the main umbrella bone 17 is connected to the periphery of the umbrella cloth, so as to support it (because the structure here is the same as the two conventional umbrellas, it is not shown for simplicity); one is the same as the first As shown in Figures 2 and 2, the middle position of the third pivoting piece 32 connected to each third main umbrella bone 17 is recessed with a recess 3 for the pivoting temple 4 of the third set of pivoting pieces 4 21 2 2, the top edges of one side are respectively protruding outwardly to extend the first extension A 320 and a first extension portion 321 protrude and protrude a plate-shaped curved flat portion 320 1 'on the free end of the first extension portion mo, and the free end portion of the curved flat portion 32〇1 penetrates a perforated 3202; Each third latching member 32 is located on a side wall of the groove 322 facing the second extending portion 321, and is beveled to form a guide slope 3 2 3 and the third pivoting member 32 is recessed relative to the first extending portion 3. At the position of 20, a recessed hole 3200 is recessed, and a guide bevel 323 of the groove 32 2 is provided to penetrate the second extension portion 321 and a perforation 3210;

200412873 V. Description of the invention (8) The second perforation means: 3210 is in a deep state (as shown in Figure 3). I ride = the same name as shown in Figures 1 to 4, in which the folding n of the present invention is assembled and designed to connect the first main umbrella bone 14 to the first main umbrella bone 14 in a number of long dry goods. The second set of pivot members 41 and the third umbrella bone 7 = the third sand joint 32. The long rod 50 is mainly an elongated rod body, and the two ends of the long rod 50 are formed on the same side to form a C-shaped f. The second-card = section ^ and the second hook section 52 (as shown in FIG. I) enable the first-chain hook section 51 of the long pull rod 50 to be hooked out to protrude from the second habitat 4iu The ring 5 is closed on the bad ring (as shown in Figs. 3 and 4), and the second hook 52 of the long pull rod 50 is known to be hooked on the curved flat portion of the second pivot member 32 "^ 丨: In the hole 3J02, in this way, the first main umbrella bone 14 and the third main umbrella bone 17,% are interlocked by a long tie rod 50. In addition, the present invention also uses A short tie rod 60 is used to connect the first pivot piece 40 of the support rib 15 and the second pivot piece 31 of the second main rib 16; wherein the short tie rod 60 is mainly an elongated rod body, and the short tie rod Both ends of 6_0 form the same side as c The bent first hook portion 6 丨 and the second hook portion 62 (as shown in Fig. 1) enable the first hook portion 61 of the short tie rod 60 to be hooked out of the first set of pivots. The U-shaped ring 40 of the piece 40 is closed on the ring (as shown in Figs. 3 and 4), and the second hook portion 62 of the short tie rod 60 is passed through the hook a again. Piece 3 1 in the perforation 3102 of the curved flat portion 3 1 〇1 (as shown in FIG. 3); thereby, the branch rib 15 and the second main umbrella bone 16 ′ can be finely pulled by the short tie rod 60 ′. Please refer to Figures 1 to 4 again. When the user unfolds the umbrella body 10, it will be in the state as shown in Figure 4, and when the user will collapse the umbrella 200412873 V. Description of the invention (9 ) When the body 10 is folded, it is formed as shown in Fig. 7. At this time, the lower nest seat 13 will slide down along the main shaft 11 (as shown by the arrow "Fig. 4"), and at the same time Drive the branch umbrella bone 15 to form a pulling force downward, and at the same time, make the first main umbrella bone 14 and the branch umbrella bone 15 form a downward swinging force, so that the first main umbrella bone can be pulled third by the long pull rod 50 Main umbrella bone 17 retracts inward Folding, and the supporting rib 15 can pull the second main rib 16 upward and inward by the short pull rod 60 (as shown by the arrow A2 in Figures 4 to 3) to form a three-stage folding type In this way, the tri-folding umbrella of the present invention can achieve fast and smooth unfolding or folding effect. It should be explained here that the second and first "three-fold umbrellas" of the present invention, the inner end extensions of the connecting pieces 31 and 32 are all formed with a curved flat portion 7 so that the volume after & Zoom out, as shown in Figures 5-7; and the first, second, and third sets of pivot members 40, 41, 42 and their corresponding first, second, and third pivots, one field 0, 31, 32, respectively There is a concave portion 406, 416, 426. • The field makes the folding of the umbrella bones smoother, and the folding of the umbrella bones can be equal to each other. The volume of the umbrella bones is greatly reduced, as shown in Figure 5_7. Household weight display. Heavy-In summary, the "three-fold umbrella" of the present invention is mainly for the benefit-the second and third main umbrella bones frame each other: the pivot of the relationship, and by the long and short Pull =, with the combination of without rivets = 镛 Receive folding umbrella,: Stronger: Durable to achieve the activity of folding umbrella; Bone patent; but the above description is different from the application of the invention Best Practice said 200412873

It is clearly stated that the scope of patent application for any invention that has been extended in accordance with the technical means of the present invention is hereby indicated. [Representative symbols of the main parts] They should also fall into the upper and lower nests of the umbrella body 12, 13 of this 10, 14, 16, 17, the first and second 11 spindle rods 1 2 0, 1 3 0 slotted three main umbrella bones 1 5 Umbrella bones 200, 210 Flat parts 30, 31, 32 First 20, 21 Upper and lower nest seat connecting parts 201, 211 Jack two and three pivot joints

30 00, 320 0 first perforation 3010, 3210 second perforation 302, 312, 322 U-shaped groove 300, 310, 320 first extension 301, 311, 321 second extension 303, 313, 323 guide slope 40, 41, 42 First, second, and third sets of pole pieces 3100, 3200 Insertion holes 3100, 3102, 3110, 3202, 3210 Perforations 3101, 320 1 Curved flat portion 400 Sockets 406, 416, 426 Recesses 401, 411, 422 Pivot Lever 402, 41 2, 421 Rectangular sleeve groove 403, 413 Through groove 404, 414 card slot ^ 405, 415U ring 4050, 4150 Horizontal stop end 41 0 Jack 5 0, 60 0 Long and short lever 51, 61 first hook portion 52, 62 second hook portion

Page 14 f-, Γ β 200412873

FIG. 1 is a three-dimensional exploded view of a preferred embodiment of the present invention. FIG. 2 is a three-dimensional appearance diagram of a preferred embodiment of the present invention. Fig. 3 is a plan view of the sound when folded according to the preferred embodiment of the present invention. Figure 4 is a plan view of the preferred embodiment of the present invention when it is unfolded. FIG. 5 is a plan view and plan view of the first pivot joint and the first set of pivot members of the present invention when folded. Fig. 6 is the plan π view of the first and second plug connectors and the second and third sets of tow pieces of the present invention when folded. FIG. 7 is a schematic plan view of the folded embodiment of the present invention when folded. FIG. 8 is a schematic plan view of a conventional three-fold umbrella.

Page 15

Claims (1)

200412873 6. Scope of patent application i. A tri-folding umbrella, the folding umbrella includes an umbrella cloth and an umbrella skeleton, the umbrella bone system includes a centrally supported main shaft, and the top of the main shaft has an upper nest seat. There is a lower nest seat under the wheel lever, the upper nest seat pivots a plurality of first main umbrella bones, and the lower nest seat pivots a plurality of branch umbrella bones; a set of umbrella bones, each of which has an inner end It is fastened to a connecting member pivotally arranged at the lower nest seat, and the first end of each umbrella bone is fixedly connected to a first set of pivot members, and the first set of pivot members is set at a position from the outer end thereof. Groove, a pivot rod is set transversely at the outer edge of the set of pivot grooves, and a U-shaped ring is protruded on the outer surface of the first set of pivot pieces; a set of first main umbrella bones, each first main umbrella The inner end of the bone is fixedly connected with a connecting member pivotally arranged on the upper nest seat, and the outer end of the first main umbrella bone is fixedly connected with a second set of pivot members 41 ′. The second set of pivot members is set at a set position from the outer end. A through-pivot pivot groove 412 is provided with a pivot rod 411 transversely at the outer end edge of the sleeve. A second U-shaped ring 41 5 is protruded on the outer surface of the second set of pivot member 41; The umbrella bone 14 is located between the upper nest seat connecting member 20 and the second set of pivot members 41, and a first pivot member 30 is sleeved. The first pivot member 30 can be connected with the first set of pivot members 4 of the umbrella bone. 〇 The pivot rods 401 are pivotally connected; a group of second main umbrella bones 16 is relative to the first main umbrella bone, and a second pivot piece 31 is fixed to the inner end of each second main umbrella bone 16 Each of the second pivotal members 31 can be pivotally connected to the pivotal rod of the second set of pivotal members 41 of the first main umbrella bone 丨 4, and the second pivotal members 31 extend a direction toward the umbrella bone. A flat portion with a perforation 'and a third set of pivot members 42 are fixed to the outer ends of the second main umbrella bones. Each of the third set of pivot members penetrates a set of pivot grooves 4 2 2 from a set position of the outer end. A pivot rod 421 is set across the outer edge of the sleeve groove 422; 200412873 VI. Scope of patent application 'A " A group of third main umbrella bones 17 relative to the number of the first main umbrella bones 14, the inner end of each third main umbrella bone 17 is fixed to a third pivot member 32. The third pivoting member 32 can be pivotally connected to the pivoting rod 421 of the third set of pivoting members 42 of the second main umbrella bone 16, and the outer end of each third main umbrella bone 7 can be connected with The perimeter of the umbrella cloth is connected to form the chooser; group Qiao Ke has a main wattage of 3: long pull rods 50, and the inner end of each long pull pair 50 is hooked to the second set of the first main umbrella bone 14 The v-shaped ring 4 1 5 of the pivot member 41 is on the outer side of the long tie rod 50 and the flat portion 320 1 of the third pivot member 32 of the third main umbrella bone 17 is relatively perforated. Linking the first, the main umbrella bone; " A set of short pull rods 60 relative to the number of support ribs, wherein the inner ends of each of the short pulls are hooked to the U-shape of the first set of pivot members 40 of the support rib 15 The ring 40 is dried, and the outer end of the short drawbar 60 is relatively hooked on the perforation of the flat portion 3101 of the second main umbrella bone 丨 the pivot member 31, so as to link the branch bone 14 to the two main bodies. Umbrella bone 16 people. " 罘 _ 2. According to the three-fold umbrella described in item 丨 of the scope of patent application, the + and the lower J of the first set of pivots of the support bone of the umbrella bone are respectively slotted in the through slot. A ^% of the opening is embedded with water on both sides Θ U-shaped +, sk + -shaped two arms are extended, so that the U-shaped ring can be embedded in A from the through slot, and the robe from the mouth is inserted into The arms of the horizontal sides of the 1 clothing abut on the A h position in the card slot, so that the U-ring's seal blue # π „depends on the inside of the ql 1 The striker can protrude from the surface of the first set of pivots. A main umbrella bone: the three-fold umbrella described in item: wherein the -extending portion and the second extension = the top edge of the two: sleeve: do not protrude outward to protrude 呷 峠, the first and second extension One or two through the ministry 200412873 VI. Perforations that communicate with the scope of the patent application, and a first groove is recessed between the first frame connector and the first and second extensions, and the groove can be pivoted with the pivot rod of the first frame member Then, the U-shaped groove is communicated with the perforations of the first and second extensions, and the inside of the groove faces the side wall of the second extension, and is beveled to form a guide slope. 4. The tri-folding umbrella as described in item 1 of the scope of the patent application, in which, the middle set / through slot of the second set of pivot members of the first main umbrella bone and a card slot that does not penetrate the second set of pivot members A U-shaped ring can be embedded in the through groove, and the two sides of the υ-shaped ring are extended horizontally at the open side, so that the U-shaped ring can be embedded in the through-groove and stopped by each U-shaped ring. The abutting end is positioned against the bottom surface of the card slot, so that the closed end of the U-ring can protrude beyond the surface of the second set of pole pieces. 5. The tri-folding umbrella as described in item 1 of the scope of the patent application, wherein a middle of the second pivoting member of the second main umbrella bone is provided with a pivotable connection with the pivoting rod of the second frame member A groove, the two ends of which respectively protrude outwardly from the first extension portion and the second extension portion, and on the free end of the third extension portion, a plate-shaped flat portion is protruded from the flat portion The free end portion of the groove extends through a perforation. The groove faces the side wall of the second extension portion, and is beveled to form a guide inclined surface. A recessed hole is recessed at a position of the groove relative to the first extension portion. The position of the guide slope of the groove relative to the insertion hole of the first extension portion is provided with a perforator penetrating through the second extension portion. 6. The tri-folding umbrella as described in item 1 of the scope of the patent application, wherein the middle recess of the third pivot joint of the third main umbrella bone can be connected with the pivot of the third set of pivot joints. A groove, the top edges of the two sides of the groove respectively protruding outwardly from the first extension portion and the second extension portion, and the groove is beveled on a side wall facing the second extension portion to form a guide inclined surface, so that the groove is opposite to The position of the second extension is concave Page 18, 200412873, Patent Application Scope A recessed hole is set, and the guide slope of the groove is relative to the recessed hole position of the first extension, and a perforator penetrating the second extension is penetrated. 7 · Three fold down nests, connecting rods, first stubs, 筮 ^^ Τ 上 # > ^ ^ μ pivot joints, second joints, first Three pivots. β, the second set of pivots and the third set of pivots are made of plastic. The first 8 main: Lee Fan! !! The three-fold umbrella according to item 1, wherein the fiber-reinforced plastic material, the second main umbrella bone and the branch umbrella are made of glass with a length of 92 t. The three-fold umbrella according to item 1 of the patent scope, wherein The short drawn birch thought that the steel wire was bent. Y ^ As described in Item 丨 of the scope of the patent application, the inner ends of the third and second pivot joints extend Qiu + ^, where the bucket fine extension σ 卩 forms a curved flat portion.