Umbrella

Abstract

The invention provides an umbrella with a small number of components and a simplified structure. An umbrella (U) is provided with: a central rod (1); the upper nest (2) is arranged at the upper end part of the middle rod (1); the lower nest (3) is arranged on the middle rod (1) in a sliding manner; the main rib (4) is arranged on the upper nest (2); the lower nest (3) is connected with the main rib (4) through the branch rib (5); and an umbrella cloth (6) attached to the main ribs (4), in which an engagement section (2a) is formed at the lower end of the upper nest (2), and an engaged section (3a) that can be attached to and detached from the engagement section (2a) is formed at the upper end of the lower nest (3).

Description

Technical Field

[0001] The invention relates to an umbrella. Background Art

[0002] In order to maintain the open state, the umbrella is constructed as follows: a roughly triangular stopper called a "spring" (also called an upper spring) made of metal is used to prevent the lower nest from descending (for example, refer to Patent Document 1).

[0003] In addition, as a device for maintaining the open state, there is also a device that moves the lower nest toward the upper nest side by the elastic force of a coil compression spring (for example, refer to Patent Document 2).

[0004] [Prior art literature]

[0005] [Patent Document]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 9-326

[0007] [Patent Document 2] Japanese Patent Application Publication No. 2012-139426

[0008] [Technical problem to be solved by the invention]

[0009] In an umbrella described in Patent Document 1, a metal spring or a spring member for applying force to the spring is used, which has the following problems: the number of parts, assembly man-hours, assembly operation time, and management man-hours are increased.

[0010] In addition, in the umbrella described in Patent Document 2, the main frame is fixed to the upper nest by metal wire, or the branch frame is connected to the lower nest by metal wire, so there are the following problems: the number of parts, assembly time, assembly operation time and management time are increased.

[0011] In addition, springs, spring members, and wires made of metal such as iron may corrode, causing their appearance or movement to deteriorate or parts to fall off. Summary of the invention

[0012] Therefore, the present invention aims to provide an umbrella with a small number of parts and a simplified structure.

[0013] [Technical solutions for solving technical problems]

[0014] In order to solve the above-mentioned problem, the umbrella of the present invention comprises: a middle rod; an upper nest installed on the upper end of the middle rod; a lower nest installed on the middle rod in a slidable manner; a main frame installed on the upper nest; a branch frame connecting the lower nest with the main frame; and an umbrella cloth installed on the main frame. In the umbrella, a locking portion is formed at the lower end of the upper nest, and a locked portion that can be detached from the locking portion is formed at the upper end of the lower nest.

[0015] [Effects of the invention]

[0016] According to the present invention, an umbrella with fewer parts and a simplified structure can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a side view which shows an example of the umbrella which concerns on embodiment of this invention.

[0018] Figure 2 It is an exploded and enlarged side view showing the upper nest, lower nest, main bone and branch bones.

[0019] Figure 3 It is an exploded enlarged cross-sectional view showing the assembled state of the umbrella top mounted on the upper nest.

[0020] Figure 4 This is an enlarged perspective view of the state when the upper nest and the lower nest are connected, viewed from an oblique upper side.

[0021] Figure 5 This is an enlarged perspective view of the state when the upper nest and the lower nest are connected, viewed from an oblique lower side.

[0022] Fig. 6A It is an exploded and enlarged cross-sectional view of the main parts showing the engaging portion of the upper nest and the engaged portion of the lower nest.

[0023] Figure 6B It is an enlarged cross-sectional view of a main part showing an engaged state of an engaging portion of an upper nest and an engaged portion of a lower nest.

[0024] Figure 7 This is an enlarged top view of the upper nest.

[0025] Figure 8 This is an enlarged bottom view of the upper nest.

[0026] Fig. 9 This is an enlarged top view of the lower nest.

[0027] Fig.10 This is an enlarged top view of the lower nest.

[0028] Fig.11 It is an enlarged side view showing the connection state of the main bone and the branch bones.

[0029] Fig.12It is an enlarged stereoscopic view of the coupling sleeve.

[0030] Fig.13 It is an exploded enlarged cross-sectional view showing a first modified example of the umbrella top of the umbrella according to the embodiment of the present invention.

[0031] Fig.14 It is an exploded enlarged cross-sectional view showing a second modified example of the umbrella top of the umbrella according to the embodiment of the present invention.

[0032] Fig.15 It is a side view showing a third modified example of the umbrella according to the embodiment of the present invention.

[0033] Fig.16 1 is a diagram showing a third modified example of the umbrella according to the embodiment of the present invention, and is an exploded enlarged side view showing an upper nest and a lower nest.

[0034] Fig.17 It is a diagram showing a third modified example of the umbrella according to the embodiment of the present invention, and is an enlarged perspective view showing an upper nest.

[0035] Fig.18 It is a figure which shows the 3rd modification of the umbrella concerning embodiment of this invention, and is an enlarged perspective view which shows the principal part of a lower nest.

[0036] [Explanation of Reference Numerals]

[0037] 1 bat

[0038] 2. 2C on the nest

[0039] 2a snap-fit ​​part

[0040] 3. 3C Nest

[0041] 3a Engaged portion

[0042] 4 Main bones

[0043] 5.5C bone

[0044] 6 umbrella cloth

[0045] 7 umbrella beads

[0046] 8 umbrella top

[0047] 21 Flange

[0048] 22 Main bone support

[0049] 23 Upper tube

[0050] 24 Insertion

[0051] 24a convex part

[0052] 26 External thread

[0053] 31 Lower barrel

[0054] 31a recess

[0055] 32 bone support parts

[0056] 43 upper nest locking hook

[0057] 81 umbrella top body

[0058] 81a Internal thread

[0059] 82 Anti-slip part

[0060] 83 Sealing part

[0061] U, U1 umbrella DETAILED DESCRIPTION

[0062] Reference Figures 1 to 12 An umbrella U according to an embodiment of the present invention will be described.

[0063] In addition, when explaining the directions, for ease of understanding, the use state of the umbrella U is used as a reference. Figure 1 The top 8 side of the umbrella shown is set as the top, and the handle 9 side is set as the bottom for description. In addition, the same reference numerals are given to the components of the same structure and their description is omitted.

[0064] <<Overall structure of the umbrella>>

[0065] like Figure 1 As shown, the umbrella U is mainly composed of: a middle rod 1, an upper nest 2, a lower nest 3, a plurality of (e.g., 8) main ribs 4, a plurality of (e.g., 8) branch ribs 5, an umbrella cloth 6, an umbrella bead 7, an umbrella top 8, and a handle 9. Figure 1 In order to show the upper nest 2 and the lower nest 3, a part of the umbrella cloth 6 is omitted. The middle rod 1, the upper nest 2, the lower nest 3, the main frame 4, the support frame 5, the umbrella cloth 6, the umbrella bead 7, the umbrella top 8 and the handle 9 are formed of resin (synthetic resin) and can be separated (detached) when the umbrella U is discarded. In this way, the components used in the umbrella U can be easily assembled and can be easily decomposed for recycling. In addition, the middle rod 1, the upper nest 2, the lower nest 3, the umbrella bead 7 and the handle 9 are formed of environmentally friendly plastics (biomass plastics (non-biodegradable), biodegradable plastics (derived from fossils), biomass plastics and biodegradable plastics, and materials from nature that are substitutes for biomass composite materials).

[0066] In addition, the number of the main bones 4 and the branch bones 5 can also be appropriately changed. Below, the case where there are 8 main bones 4 and branch bones 5 is used as an example for explanation.

[0067] <<Mid bat>>

[0068] Figure 1 The middle rod 1 shown is a core rod arranged on the axis of the umbrella U. The middle rod 1 is a double-layer structure with an inner and outer layer, the inner layer is formed of glass fiber or carbon fiber, and the outer layer is formed of resin. An upper nest 2 is installed at the upper end of the middle rod 1, and a lower nest 3 is installed in the center of the middle rod 1 so as to slide freely. A handle 9 is installed at the lower end of the middle rod 1.

[0069] <<Shangchao>>

[0070] like Figure 1 or Figure 2 As shown, the main frame 4 and the umbrella top 8 are installed on the upper nest 2. The upper nest 2 is composed of a cylindrical member, which is embedded in the upper end of the middle rod 1 and fixed to the middle rod 1 by a pin 20 that penetrates the upper nest 2 and the middle rod 1. Figure 2 As shown, on the upper nest 2, a flange portion 21, a main bone supporting portion 22, an upper cylinder portion 23, an insertion portion 24, a cylindrical portion 25, and an external threaded portion 26 are integrally formed.

[0071] <Flange>

[0072] like Figure 3 As shown, the flange portion 21 is a portion that supports the peripheral portion of the screw insertion hole 6a formed in the central portion of the umbrella cloth 6 and the sky cloth 61 from the lower side. The flange portion 21 is formed in a circular flat plate shape when viewed from above. A main bone support portion 22 is formed on the lower side of the flange portion 21, and an external thread portion 26 is formed on the upper side of the flange portion 21.

[0073] <Main bone support>

[0074] like Figure 2 As shown, the main bone support part 22 is a part that supports the plurality of main bones 4 in a manner that the plurality of main bones 4 are detachable and rotatable. The main bone support part 22 is formed into a thick plate shape that is roughly circular when viewed from above. The main bone support part 22 includes a circular thick plate part 22a, a snap-fit ​​groove 22b, and an axis support part 22c.

[0075] like Figure 2 to Figure 5 As shown, the circular thick plate portion 22a is a thick flat plate-shaped portion that is formed on the lower side of the flange portion 21 and is circular when viewed from above. An engagement groove 22b and a shaft support portion 22c are formed on the circular thick plate portion 22a.

[0076] like Figure 2 As shown, the engagement groove 22b is a groove formed on the outer peripheral surface of the circular thick plate portion 22a, extending in the up-down direction (see Figure 5 and Figure 8 ). The upper end of the engagement groove 22b is blocked by the flange portion 21. On the other hand, the lower end of the engagement groove 22b is open. Figure 8As shown, the number of the engaging grooves 22b is the same as the number of the main bones 4 (eight), and the eight engaging grooves 22b are formed radially on the outer periphery of the upper nest 2 when viewed from above.

[0077] like Figure 2 As shown, the shaft support portion 22c is connected to one end of the main bone 4. The shaft support portion 22c is composed of a horizontal axis formed on the upper part of each engaging groove 22b.

[0078] <Upper tube>

[0079] like Figure 2 As shown, the upper cylinder 23 is formed in a cylindrical shape and is installed on the upper end of the middle rod 1. The upper cylinder 23 is formed on the lower side of the main bone support part 22. That is, the upper cylinder 23 extends from the lower surface of the main bone support part 22 to the lower nest 3.

[0080] <Insertion Portion and Engagement Portion>

[0081] like Fig. 6A and Figure 6B As shown, the insertion portion 24 is a portion inserted into the upper end of the lower nest 3, and is composed of a cylinder with a smaller diameter than the outer diameter of the upper cylinder portion 23. The insertion portion 24 is formed on the lower side of the upper cylinder portion 23. A snap-fitting portion 2a is protrudingly provided at the lower end of the insertion portion 24, and the snap-fitting portion 2a is formed to be able to snap-fit ​​or snap-fit ​​with the upper end of the lower nest 3 (the snap-fitted portion 3a described later).

[0082] The engaging portion 2a is composed of a protrusion 24a formed in an annular shape on the outer periphery of the insertion portion 24, an annular locking groove 24b provided adjacent to the upper side of the protrusion 24a, and a pair of tongue-shaped protrusions 24c protruding downward from the lower end of the cylindrical insertion portion 24 (see Figure 2 ) and constituted.

[0083] The convex portion 24a is formed when the lower nest 3 is pushed upward (in the direction of arrow a) to open the umbrella U (see Figure 1 ),like Figure 6B As shown, the projection is used to engage with the recessed portion 31a to maintain the umbrella U in the opened state.

[0084] The locking groove 24b is when the lower nest 3 is pushed upward (in the direction of arrow a) to open the umbrella U (see Figure 1 ), an annular groove for engaging with the locking protrusion 31c to maintain the umbrella U in an opened state.

[0085] The protruding piece 24c is when the lower nest 3 is pushed upward (in the direction of arrow a) to open the umbrella U (see Figure 1 ) is a guide member that is used to easily and loosely fit with the insertion portion 24 of a small diameter.

[0086] <Cylinder>

[0087] like Figure 3 As shown, the cylindrical portion 25 is a cylindrical portion protruding upward from the flange portion 21. The cylindrical portion 25 is inserted into: the threaded insertion hole 6a of the umbrella cloth 6, the threaded insertion hole 61a of the sky cloth 61, the threaded insertion hole 83a of the sealing portion 83 of the umbrella top 8, and the threaded insertion hole 81b of the umbrella top body 81. The cylindrical portion 25 has a middle rod insertion hole (omitted in the figure) into which the upper end of the middle rod 1 is inserted. A pin setting hole 25a connected to the middle rod insertion hole (omitted in the figure) is formed in the cylindrical portion 25. The pin 20 is inserted into the pin setting hole 25a, and the pin 20 is used to fix the middle rod 1 to the upper nest 2.

[0088] <Pin>

[0089] like Figure 3 As shown, the pin 20 is a fixing member that fixes the upper nest 2 to the middle rod 1 in a detachable state. The pin 20 is composed of a rod-shaped member made of resin, for example. The pin 20 set in the pin setting hole 25a can be pushed out from the upper nest 2 by pressing with a tool or the like. If the pin 20 is pushed out from the upper nest 2, the upper nest 2 can be removed from the middle rod 1 and disassembled.

[0090] <External thread>

[0091] The external thread portion 26 is formed to protrude upward from the flange portion 21 via the cylindrical portion 25. The umbrella top 8 is attached to the external thread portion 26.

[0092] <<Down the Nest>>

[0093] like Figure 1 or Figure 2 As shown, a support bone 5 is installed on the lower nest 3. The lower nest 3 is composed of a cylindrical member that is slidably embedded in the middle rod 1 between the upper nest 2 and the handle 9. Figure 2 As shown, a lower cylinder portion 31, a support bone supporting portion 32, a holding cylinder portion 33, and an intrusion prevention portion 34 are formed in the lower nest 3.

[0094] <Lower tube>

[0095] like Figure 2 As shown, the lower cylinder 31 is used to connect the lower nest 3 to the upper nest 2 in a detachable manner, and is formed on the upper side of the support bone support part 32. That is, the lower cylinder 31 extends from the upper surface of the support bone support part 32 to the upper nest 2. Fig. 6A and Figure 6B As shown, the lower tube portion 31 is formed in a cylindrical shape, and an engaged portion 3a is formed on the inner side of the upper end portion of the lower tube portion 31, which is engaged with the engaging portion 2a of the upper nest 2 to keep the umbrella in an open state.

[0096] When the engaging portion 2a of the upper nest 2 is engaged with the engaged portion 3a of the lower nest 3, Figure 1The length L1 from the bottom of the main bone support part 22 to the top of the branch bone support part 32 is, for example, 12 cm. Figure 2 The length shown is the sum of the length L11 from the bottom of the main bone supporting part 22 to the lower end of the upper tube part 23 and the length L11 from the top of the branch bone supporting part 32 to the upper end of the lower tube part 31.

[0097] In addition, the length L2 from the center of the locking portion 52b of the support bone 5 to the center of the locking portion 53b (see Figure 1 ) is, for example, 27 cm. Figure 1 As shown, the limb opening angle θ3 from the outer peripheral surface of the lower tube portion 31 centered on the limb support portion 32 when the umbrella U is opened and spread to the limb 5 is, for example, 70 degrees.

[0098] like Fig. 6A and Figure 6B As shown, the engaged portion 3a is a portion engaged with the engaging portion 2a of the insertion portion 24 when the lower nest 3 is pushed upward toward the upper nest 2 and the umbrella U is in an open state. The engaged portion 3a is composed of a recessed portion (annular groove) 31a, a large diameter portion 31b, a locking convex portion 31c, a longitudinal groove 31d, a protruding piece engaging portion 31e, and a rotation inhibiting portion 31f.

[0099] The recessed portion 31a is a portion that is engaged with or disengaged from the protruding portion 24a of the upper nest 2. The recessed portion 31a is formed of a groove formed in an annular shape on the inner wall of the lower cylinder portion 31. A large diameter portion 31b, a locking protruding portion 31c, and a plurality of longitudinal grooves 31d are formed on the upper side of the recessed portion 31a.

[0100] The large diameter portion 31b is a portion where the insertion portion 24 of the upper nest 2 is first inserted when the lower nest 3 is pushed upward toward the upper nest 2 and the umbrella U is in an open state. The large diameter portion 31b is formed to have a larger diameter than the recessed portion 31a and the protruding piece engaging portion 31e in order to facilitate the insertion of the engaging portion 2a into the engaged portion 3a when the lower nest 3 is pushed upward toward the upper nest 2. The large diameter portion 31b is formed at the inner edge of the opening of the lower tube portion 31.

[0101] The locking projection 31 is an annular projection that engages with the locking groove 24 b with a snap sound when the lower nest 3 is pushed upward toward the upper nest 2 and the umbrella U is in an open state.

[0102] The longitudinal groove 31d is a notch groove that can adjust the pressing force when the convex part (engaging part 2a) is pressed into the large diameter part 31b to engage and the pulling force when it is disengaged, and is used to make the opening part of the lower cylinder part 31 easy to elastically deform and can be removed with a relatively weak force. The longitudinal groove 31d is formed in a plurality of (for example, 4) circumferentially at appropriate intervals from the opening end of the lower cylinder part 31 to the axial center of the large diameter part 31b along the axis of the lower nest 3.

[0103] According to such a configuration, the engaged portion 3a (recessed portion 31a) forms a longitudinal groove, thereby reducing the push-in operation force and the pull-out operation force when engaging and disengaging with the engaging portion, thereby improving durability and becoming wear-resistant.

[0104] The protruding piece engaging portion 31e is a portion where the protruding piece 24 is fitted when the lower nest 3 is pushed upward toward the upper nest 2 and the engaged portion 3a is externally fitted to the engaging portion 2a.

[0105] like Fig. 6A and Figure 6B As shown, a protruding piece 24c (see FIG. 24A ) is formed on the inner peripheral surface of the lower tube portion 31 of the lower nest 3 to inhibit the upper nest 2 from moving. Figure 2 and Fig.17 ) The rotation inhibiting portion 31f rotates (refer to Fig.18 The rotation inhibiting portion 31f is composed of a plurality of protrusions that inhibit the upper nest 2 from rotating when the upper nest 2 rotates relative to the lower nest 3 by abutting against the rotation inhibiting portion 31f by the protruding piece 24c.

[0106] If the lower nest 3 is moved upward along the middle rod 1, and the engaged portion 3a (the concave portion 31a) is engaged with the engaging portion 2a (the convex portion 24a) of the upper nest 2, Figure 1 As shown, the umbrella U can be kept in an open state.

[0107] Furthermore, the umbrella U can be closed by moving the lower nest 3 downward along the middle rod 1 from the open state and disengaging the engaged portion 3a (recess 31a) from the engaging portion 2a (convex portion 24a) of the upper nest 2.

[0108] <Bone support>

[0109] like Figure 2 As shown, the rib support part 32 is a part that supports the plurality of ribs 5 in a detachable and rotatable manner. The rib support part 32 includes: a large diameter part 32d of a substantially cylindrical shape formed on the lower side of the lower cylinder part 31, and a small diameter part 32e of a substantially cylindrical shape formed on the lower side of the large diameter part 32d. An engaging groove 32a is formed in the small diameter part 32e. In addition, a holding part 32c is formed in the large diameter part 32d. In addition, a shaft support part 32b is formed in the boundary part between the large diameter part 32d and the small diameter part 32e.

[0110] The engagement groove 32a is a groove formed on the outer peripheral surface of the small diameter portion 32e, and extends in the vertical direction. The lower end of the engagement groove 32a is blocked by the upper end of the holding tube portion 33. On the other hand, the upper end of the engagement groove 32a is connected to the holding portion 32c. Fig. 9 As shown, the number of the engaging grooves 32a is the same as the number of the support bones 5 (eight), and the eight engaging grooves 32a are formed radially on the outer periphery of the lower nest 3 when viewed from above.

[0111] like Figure 2 As shown, one end of the support bone 5 is connected to the shaft support portion 32b. The shaft support portion 32b is composed of a horizontal axis.

[0112] like Figure 2 and Fig. 9 As shown, the holding portion 32c is a groove formed in the large diameter portion 32d, extending in the vertical direction. The lower end of the holding portion 32c is connected to the engaging groove 32a. On the other hand, the upper end of the holding portion 32c is open. The holding portion 32c can hold one end of the support bone 5 (the lower nest engaging portion 53c described later). Figure 4 and Fig. 9 As shown, the side wall of the holding portion 32c is formed in an arc shape when viewed from above. The groove width of the holding portion 32c is the largest above the shaft support portion 32b. The opening width of the holding portion 32c at the outer peripheral surface of the large diameter portion 32d is formed to be smaller than the maximum groove width of the holding portion 32c and equal to the outer diameter of the lower nest engaging portion 53c of the support bone 5.

[0113] <Holding tube>

[0114] like Figure 1 As shown in FIG. 1 , the gripping tube 33 is a portion used as a hand-held portion when opening and closing the umbrella U. That is, when the lower nest 3 is raised to open the umbrella U, and when the lower nest 3 is lowered to close the umbrella U, the gripping tube 33 is gripped to operate the lower nest 3. Figure 2 , Figure 3 as well as Figure 4 As shown, the gripping cylinder 33 is formed on the lower side of the support bone support 32. The gripping cylinder 33 is formed in a cylindrical shape, but is formed in a manner that gradually becomes thinner from the upper end and the lower end to the central part, so that it is easy to hold when the lower nest 3 is raised and lowered.

[0115] <Push-in prevention section>

[0116] The intrusion prevention portion 34 is a portion for eliminating the gap between the middle rod 1 and the lower nest 3 to prevent fingers from being squeezed into and caught between the middle rod 1 and the lower nest 3 when the umbrella U is opened and closed. The intrusion prevention portion 34 is formed integrally with the lower end of the grip tube 33 by resin. Alternatively, the intrusion prevention portion 34 may be formed as a component made of a rubber or soft resin annular buffer member as a separate body from the lower nest 3 and mounted on the lower end of the grip tube 33.

[0117] <<Main bone>>

[0118] like Figure 1As shown in FIG. 1 , the main frame 4 is a frame member for stretching the umbrella cloth 6. The base end of the main frame 4 is supported on the upper part of the upper nest 2. The main frame 4 is composed of a roughly rod-shaped member, which is close to the middle rod 1 when the umbrella U is closed, and extends radially from the upper end of the middle rod 1 when the umbrella U is opened. Figure 2 As shown, the main bone 4 includes a main bone body 41, a coupling sleeve 42, an upper nest locking hook 43, and an umbrella bead 7.

[0119] <Main bone>

[0120] like Figure 1 As shown in FIG. 1 , the main frame body 41 is a member that supports the umbrella cloth 6 from the bottom when the umbrella U is opened. The main frame body 41 is composed of a rod-shaped member formed of resin, glass fiber or carbon fiber. Figure 2 and Fig.11 As shown, an upper nest locking hook 43 is installed at the base end of the main bone body 41. A coupling sleeve 42 is installed at the central part of the main bone body 41, and an umbrella bead 7 is installed at the front end of the main bone body 41.

[0121] <Joint sleeve>

[0122] like Figure 2 , Fig.11 or Fig.12 As shown, the coupling sleeve 42 is a member disposed at the connection portion between the main bone 4 and the support bone 5. The coupling sleeve 42 is composed of a resin member integrally formed with a cylinder 42a, a hook shaft support portion 42b, and a support piece 42c. The coupling sleeve 42 can be disassembled from the main bone body 41 and recycled.

[0123] like Fig.11 and Fig.12 As shown, the tube portion 42a is a tubular portion that is embedded in the main bone body 41.

[0124] The hook shaft support portion 42b is a portion that rotatably and detachably supports the engagement sleeve locking hook 52 provided on the support bone 5. The hook shaft support portion 42b is composed of a horizontal shaft spanned between two support pieces 42c.

[0125] The support piece 42c protrudes from the outer peripheral surface of the cylindrical portion 42a toward the middle rod 1.

[0126] <Upper nest locking hook>

[0127] like Figure 2 or Fig.11As shown, the upper nest locking hook 43 is a member for connecting the main bone 4 to the main bone supporting portion 22 of the upper nest 2. The upper nest locking hook 43 includes: a plate-shaped portion 43a, a locking portion 43b, and a main bone main body connecting portion 43c. The plate-shaped portion 43a, the locking portion 43b, and the main bone main body connecting portion 43c are integrally formed of resin. The upper nest locking hook 43 can be disassembled from the main bone main body 41 and recycled.

[0128] like Figure 2 , Figure 5 or Figure 8 As shown, the plate-like portion 43a is a portion to be inserted into the engaging groove 22b.

[0129] The locking portion 43b is a hook that is rotatably locked to the shaft support portion 22c and is roughly C-shaped when viewed from the side. The locking portion 43b locked to the shaft support portion 22c can be rotated in the up and down direction. When the main bone 4 rotates up and down, it rotates up and down around the shaft support portion 22c as the center, and the plate-like portion 43a is guided in the engaging groove 22b as a longitudinal groove, so it is not easy to rotate to the left and right. The rotatable angle θ1 of the locking portion 43b is about 90 degrees from the position where the upper nest locking hook 43 abuts against the lower surface of the flange portion 21 to the position along the upper tube portion 23.

[0130] The main bone body connecting portion 43 c is a cylindrical portion into which the end of the main bone body 41 is inserted.

[0131] <<Branches>>

[0132] like Figure 1 As shown, the support bone 5 is a bone component used to connect the middle rod 1 to the main bone 4. The support bone 5 is configured to extend radially from the lower nest 3. The base end of the support bone 5 is connected to the support bone support part 32 of the lower nest 3, and the front end of the support bone 5 is connected to the coupling sleeve 42 of the main bone 4. The support bone 5 is composed of a roughly rod-shaped component. When the umbrella U is closed (when the lower nest 3 is moved toward the handle 9), the support bone 5 pulls the main bone 4 to the vicinity of the middle rod 1 while approaching the middle rod 1. When the umbrella U is opened (when the lower nest 3 is moved toward the umbrella top 8), the support bone 5 extends radially from the middle rod 1 to unfold the main bone 4. As shown in FIG. Figure 2 As shown, the support bone 5 comprises: a support bone body 51, an engagement sleeve locking hook 52 arranged at the front end of the support bone body 51, and a lower nest locking hook 53 arranged at the base end of the support bone body 51.

[0133] <Bone body>

[0134] like Figure 1 and Figure 2As shown, the support frame body 51 is a member that supports the main frame 4 from the bottom when the umbrella U is opened. The support frame body 51 is formed of resin, glass fiber or carbon fiber. A joint sleeve locking hook 52 is installed at the front end of the support frame body 51, and a lower nest locking hook 53 is installed at the base end of the support frame body 51.

[0135] <Joint sleeve locking hook>

[0136] The coupling sleeve locking hook 52 is a member for connecting the support bone 5 to the coupling sleeve 42 of the main bone 4. The coupling sleeve locking hook 52 includes a plate-shaped portion 52a, a locking portion 52b, and a support bone body connecting portion 52c. The plate-shaped portion 52a, the locking portion 52b, and the support bone body connecting portion 52c are integrally formed of resin. The coupling sleeve locking hook 52 can be removed from the support bone body 51 and recycled.

[0137] like Figure 2 , Fig.11 or Fig.12 As shown, the plate-like portion 52a is a portion inserted between a pair of support pieces 42c.

[0138] The locking portion 52b is a hook that is rotatably locked to the hook shaft support portion 42b and is substantially C-shaped when viewed from the side. The locking portion 52b locked to the hook shaft support portion 42b can rotate in the up-down direction. When the support bone 5 rotates up-down, it rotates up-down around the hook shaft support portion 42b, and the plate-shaped portion 53a is guided between the two support pieces 42c, so it is not easy to rotate left and right.

[0139] The bone body connecting portion 52c is a cylindrical portion into which the end of the bone body 51 is inserted.

[0140] <Lower nest locking hook>

[0141] The lower nest locking hook 53 is a member for rotatably connecting the support bone 5 to the support bone supporting portion 32 of the lower nest 3. Similar to the upper nest locking hook 43 and the engagement sleeve locking hook 52, the lower nest locking hook 53 includes a plate-shaped portion 53a, a locking portion 53b, and a lower nest engaging portion 53c. The plate-shaped portion 53a, the locking portion 53b, and the lower nest engaging portion 53c are integrally formed of resin. The lower nest locking hook 53 can be removed from the support bone body 51 and recycled.

[0142] like Figure 2 , Figure 5 or Figure 8 As shown, the plate-shaped portion 53a is a portion to be inserted into the engaging groove 32a.

[0143] The locking portion 53b is a hook that is rotatably locked to the shaft support portion 32b and is roughly C-shaped when viewed from the side. The locking portion 53b locked to the shaft support portion 32b can rotate in the up and down direction. When the support bone 5 rotates up and down, it rotates up and down around the shaft support portion 32b as the center, and the plate-like portion 53a is guided in the engaging groove 32a as a longitudinal groove, so it is not easy to rotate to the left and right. The rotatable angle θ2 of the locking portion 53b is an angle from the position of the lower nest locking hook 53 of the support bone 5 along the lower cylinder 31 to the position from the support bone support portion 32 toward the oblique upper direction, which is about 70 degrees.

[0144] The lower nest engaging portion 53c is a portion that is embedded in the holding portion 32c of the lower nest 3 when the umbrella U is closed. The lower nest engaging portion 53c is cylindrical. The end of the support frame body 51 is inserted into the lower nest engaging portion 53c. Figure 2 As shown, when the umbrella U is closed and the support frame 5 is along the lower tube portion 31, the lower nest engaging portion 53c is embedded in the holding portion 32c and held by the holding portion 32c, thereby maintaining the umbrella U in a closed state.

[0145] The lower nest engaging portion 53c is separated from the holding portion 32c when the umbrella U is changed from the closed state to the open state (when the lower nest 3 is moved toward the umbrella top 8). In other words, the lower nest engaging portion 53c is detachable relative to the holding portion 32c.

[0146] <<Umbrella cloth>>

[0147] like Figure 1 As shown, the umbrella cloth 6 is a sheet-like member used for rain protection, sun protection, etc. The umbrella cloth 6 is arranged on the main frame 4 and is sewn to the main frame 4 at an appropriate position. The umbrella cloth 6 of this embodiment corresponds to the eight main frames 4 and is formed into an octagonal shape when viewed from above. Umbrella beads 7 are sewn to the corners of the outer periphery of the octagonal umbrella cloth 6 (see Fig.11 The umbrella cloth 6 is made of environmentally friendly recycled polyester fabric (PET bottle recycled fabric).

[0148] <<Umbrella Beads>>

[0149] like Figure 1 , Figure 2 or Fig.11 As shown, the umbrella bead 7 is a member for holding the outer peripheral portion of the umbrella cloth 6 at the front end portion of the main frame 4. The umbrella bead 7 is composed of a bottomed cylindrical cap made of resin, and the front end portion is formed into a hemispherical shape with rounded corners.

[0150] <<Umbrella Top>>

[0151] like Figure 3As shown, the umbrella top 8 is a member mounted on the front end of the umbrella U. The umbrella top 8 includes an umbrella top body 81, an anti-slip portion 82, and a sealing portion 83. The umbrella top body 81 is made of resin, for example, and the anti-slip portion 82 and the sealing portion 83 are made of silicone resin or rubber, for example.

[0152] <Umbrella top body>

[0153] The umbrella crown body 81 is a part forming the framework of the umbrella crown 8. The umbrella crown body 81 is formed with an internal thread portion 81a, a thread insertion hole 81b, an anti-slip fitting portion 81c, and a seal fitting portion 81d.

[0154] The internal thread portion 81a is used to be screwed with the external thread portion 26 of the upper nest 2 to fix the umbrella top 8 to the thread portion of the upper nest 2 in a detachable manner.

[0155] The screw insertion hole 81 b is a portion into which the cylindrical portion 25 of the upper nest 2 is inserted.

[0156] The anti-slip fitting portion 81 c is a portion where the anti-slip portion 82 is fitted.

[0157] The seal fitting portion 81d is a portion where the seal portion 83 is fitted.

[0158] <Anti-slip section>

[0159] The anti-slip portion 82 is arranged at the upper end of the umbrella U, and is a part that functions as an anti-slip and cushioning material when the closed umbrella U is poked on the ground. The anti-slip portion 82 includes a spherical portion 82a that is arranged to bulge from the upper end of the umbrella top body 81, and an inserting portion 82b that is inserted into the anti-slip inserting portion 81c. The anti-slip portion 82 is arranged at the upper end of the umbrella top body 81. In this way, at the front end of the umbrella U, the spherical portion 82a of the anti-slip portion 82 is formed into a circular shape by a soft member such as silicone resin, so it is not dangerous, has an anti-slip function, and will not rust.

[0160] <Seal section>

[0161] The sealing portion 83 is a portion that performs the following function: preventing rainwater from leaking to the lower side of the umbrella cloth 6 through the screw insertion hole 61a of the sky cloth 61 and the screw insertion hole 6a of the umbrella cloth 6. In addition, the sealing portion 83 is made of silicone resin or rubber, and thus also functions as a member for preventing the sky cloth 61 and the umbrella cloth 6 disposed on the lower side of the sealing portion 83 from being separated. The sealing portion 83 is disposed at the lower end of the umbrella top body 81.

[0162] <<Handle>>

[0163] Figure 1The handle 9 shown is a portion that is held by the user of the umbrella U. The handle 9 is composed of a resin grip embedded in the lower end of the middle rod 1. An internal thread portion (not shown) is formed at the upper end of the handle 9 to be screwed to an external thread portion (not shown) formed at the lower end of the middle rod 1. The handle 9 is fixed to the middle rod 1 by screwing the internal thread portion to the external thread portion of the middle rod 1.

[0164] [effect]

[0165] Next, refer to Figures 1 to 12 The assembly method and effects of the umbrella U are described.

[0166] When assembling the umbrella U, Figure 1 As shown, the external threaded portion (not shown) at the lower end of the middle rod 1 is screwed into the internal threaded portion (not shown) at the upper end of the handle 9 for installation. In addition, the middle rod 1 is inserted into the lower nest 3 and the upper nest 2. The upper end of the middle rod 1 is inserted into the cylindrical portion 25 of the upper nest 2. Then, as shown in FIG. Figure 3 As shown, the pin 20 is inserted into the pin setting hole 25a of the cylindrical portion 25 to fix the upper nest 2 to the middle rod 1.

[0167] In addition, Figure 2 As shown, the cylindrical portion 42a of the coupling sleeve 42 is embedded in the middle portion of the main bone body 41, and the main bone body connecting portion 43c of the upper nest locking hook 43 is embedded in the base end (upper end) of the main bone body 41. In addition, the branch bone body connecting portion 52c of the coupling sleeve locking hook 52 is embedded in the front end (upper end) of the branch bone body 51 of the branch bone 5, and the lower nest engaging portion 53c of the lower nest locking hook 53 is embedded in the base end (lower end) of the branch bone body 51.

[0168] Next, the support bone 5 is connected to the main bone 4. Specifically, the locking portion 52b of the engagement sleeve locking hook 52 is locked to the hook shaft support portion 42b of the engagement sleeve 42. The main bone 4 and the support bone 5 can be installed in a one-touch manner, so the installation operation is easy and can be installed quickly.

[0169] Next, the main bone 4 is connected to the upper nest 2. Specifically, the main bone 4 is placed in a state where it is approximately orthogonal to the upper tube 23 (the notch of the locking portion 43b of the upper nest locking hook 43 is facing upward), the locking portion 43b is located below the shaft support portion 22c of the upper nest 2, and the shaft support portion 22c is pressed into the hole of the locking portion 43b, thereby locking the locking portion 43b to the shaft support portion 22c. In the same manner, the locking portions 43b of the eight main bones 4 are locked to the shaft support portion 22c of the upper nest 2. The main bone 4 can be installed to the upper nest 2 in a one-touch manner, so the installation work is easy and can be installed quickly.

[0170] Next, the support bone 5 is connected to the lower nest 3. With the support bone 5 and the lower cylinder 31 being approximately orthogonal (the notch of the locking portion 53b of the lower nest locking hook 53 is facing downward), the locking portion 53b is positioned above the shaft support portion 32b of the upper nest 2, and the shaft support portion 32b is pressed into the hole of the locking portion 53b, thereby locking the locking portion 53b to the shaft support portion 32b. In the same manner, the locking portions 53b of the eight support bones 5 are locked to the shaft support portion 32b of the lower nest 3. The support bone 5 can be mounted to the lower nest 3 in a one-touch manner, so the mounting operation is easy and the assembly can be quick.

[0171] Next, the cylindrical portion 25 is inserted through the threaded insertion hole 6a of the umbrella cloth 6 and the threaded insertion hole 61a of the sky cloth 61. After that, the external threaded portion 26 of the upper nest 2 is screwed into the internal threaded portion 81a of the umbrella top 8, so that the umbrella cloth 6 and the sky cloth 61 are clamped by the flange portion 21 of the upper nest 2 and the sealing portion 83 of the umbrella top 8. Then, the sealing portion 83 composed of an elastic member is in close contact with the upper surface of the sky cloth 61, and the periphery of the threaded insertion hole 61a of the sky cloth 61 and the periphery of the threaded insertion hole 6a of the umbrella cloth 6 are pressed against the upper surface of the flange portion 21. Thus, it is possible to prevent rainwater from leaking from the threaded insertion hole 6a of the umbrella cloth 6 to the lower surface side of the umbrella cloth 6.

[0172] Then, if Fig.11 As shown in the figure, the umbrella cloth 6 is sewn to the main frame 4, and the umbrella beads 7 sewn to the eight corners of the outer periphery of the umbrella cloth 6 are embedded in the front end of the main frame body 41. Thus, the assembly of the umbrella U is completed. The umbrella U does not have a spring, a spring member, a wire, etc., so the number of parts and the assembly man-hours are more simplified than those of the existing umbrella. That is, according to the umbrella U, it can be easily assembled in a short time, so the cost can be reduced.

[0173] In addition, Figure 2 or Fig. 6A and Figure 6B As shown, when the umbrella U is opened, the lower nest 3 is pushed upward and the engaged portion 3a (recessed portion 31a) is engaged with the engaging portion 2a (convex portion 24a) of the upper nest 2, so that the umbrella U can be kept in the opened state. When the engaged portion 3a (recessed portion 31a) and the engaging portion 2a (convex portion 24a) are engaged, a sound is produced, so that it can be confirmed that the umbrella U is kept in the opened state.

[0174] In addition, Figure 2 or Fig. 6A and Figure 6B As shown in FIG. 1 , when the umbrella U is closed, the lower nest 3 is pulled downward to disengage the engaged portion 3a (recess 31a) from the engaging portion 2a (convex portion 24a) of the upper nest 2, thereby enabling the umbrella U to be closed. Figure 2 or Fig. 9As shown, by lowering the lower nest 3 downward and pressing the lower nest engaging portion 53c of the support bone 5 into and engaging with the holding portion 32c of the lower nest 3, the support bone 5 can be kept along the middle rod 1 (that is, the umbrella U is closed). When the lower nest engaging portion 53c is pressed into the holding portion 32c, a sound is emitted, so that it can be confirmed that the umbrella U is kept in the closed state.

[0175] In addition, when the umbrella U is discarded or repaired, the assembled umbrella U can be easily disassembled. Fig.11 The umbrella bead 7 shown is removed from the main frame body 11, and the thread connecting the main frame 4 and the umbrella cloth 6 is removed, and the Figure 3 The umbrella top 8 shown is disassembled, thereby disassembling the umbrella cloth 6 from the umbrella U.

[0176] Then, if Figure 2 As shown, the support bone 5 is removed from the main bone 4. That is, the locking portion 52b of the engagement sleeve locking hook 52 of the support bone 5 is disengaged from the hook shaft support portion 42b of the engagement sleeve 42 of the main bone 4. Next, the support bone 5 is removed from the lower nest 3. Specifically, the support bone 5 is pulled upward while the support bone 5 is at a substantially right angle to the middle rod 1, so that the locking portion 53b is disengaged from the shaft support portion 32b.

[0177] After the support bone 5 is removed from the main bone 4, the main bone 4 is removed from the upper nest 2. Specifically, the main bone 4 is pulled downward while the main bone 4 is at a substantially right angle to the middle rod 1, so that the locking portion 43b is disengaged from the shaft support portion 22c.

[0178] Next, the pin 20 is pressed in with a tool or the like to disengage the pin 20 from the pin setting hole 25 a , thereby removing the middle rod 1 from the upper nest 2 and the lower nest 3 .

[0179] Then, make Figure 1 The handle 9 shown is rotated relative to the middle rod 1 to separate the threaded portion (not shown), thereby separating the handle 9 from the middle rod 1. In this way, all parts of the umbrella U can be disassembled. Since the disassembled parts are made of resin, silicone, rubber, or recycled fabrics of PET bottles, they can all be recycled and will not corrode even if they are wetted by rainwater.

[0180] So, if Figure 1 , Figure 2 or Fig. 6A and Figure 6BAs shown, the umbrella U comprises: a middle rod 1, an upper nest 2 mounted on the upper end of the middle rod 1, a lower nest 3 mounted on the middle rod 1 in a slidable manner, a main frame 4 mounted on the upper nest 2, a support frame 5 connecting the lower nest 3 and the main frame 4, and an umbrella cloth 6 mounted on the main frame 4. A locking portion 2a is formed at the lower end of the upper nest 2, and a locked portion 3a that can be detached from the locking portion 2a is formed at the upper end of the lower nest 3.

[0181] According to the umbrella U, the umbrella U can be kept in an open state by engaging the engaging portion 2a formed at the lower end of the upper nest 2 with the engaged portion 3a formed at the upper end of the lower nest 3. In addition, the engaged portion 3a can be disengaged from the engaging portion 2a to close the umbrella U. In this way, the umbrella U can be kept in an open state by inserting the lower nest 3 into the upper nest 2 without using a spring or a spring member, so the number of parts is small, the assembly is easy, and a simplified structure can be configured.

[0182] In addition, Figure 2 or Fig. 6A and Figure 6B As shown, the upper nest 2 has a main bone support portion 22 connected to the main bone 4, and an upper tube portion 23 formed on the lower side of the main bone support portion 22, and the lower nest 3 has a branch bone support portion 32 connected to the branch bone 5, and a lower tube portion 31 formed on the upper side of the branch bone support portion 32. An insertion portion 24 inserted into the lower tube portion 31 is formed in the upper tube portion 23. The engaging portion 2a is composed of a convex portion 24a formed on the outer peripheral portion of the lower end portion of the inserting portion 24, and the engaged portion 3a is composed of a concave portion 31a formed on the inner wall of the lower tube portion 31.

[0183] According to such a structure, by fitting the lower tube 31 with the insertion portion 24 of the upper nest 2, the convex portion 24a as the engaging portion 2a of the upper nest 2 is engaged with the concave portion 31a as the engaged portion 3a of the lower nest 3, so that the lower nest 3 can be connected to the upper nest 2. In this way, the lower nest 3 can be connected to the upper nest 2 without using other parts such as springs for the upper nest 2 and the lower nest 3.

[0184] In addition, the upper nest 2 has a main bone supporting portion 22 connected to the main bone 4, and an upper tube portion 23 formed on the lower side of the main bone supporting portion 22, the lower nest 3 has a branch bone supporting portion 32 connected to the branch bone 5, and a lower tube portion 31 formed on the upper side of the branch bone supporting portion 32, an insertion portion 24 inserted into the upper tube portion 23 is formed in the lower tube portion 31, the engaging portion 2a is composed of a recessed portion 31a formed on the inner wall of the upper tube portion 23, and the engaged portion 3a is composed of a convex portion 24a formed on the outer peripheral portion of the upper end portion of the insertion portion 24.

[0185] In this way, the engaging portion 2a and the engaged portion 3a may be such that the engaging portion 2a is set as the concave portion 31a and the engaged portion 3a is set as the convex portion 24a. Even if they are changed, the same effect can be obtained.

[0186] In addition, Figure 1 , Figure 2 or Figure 3 As shown, the upper nest 2 and the lower nest 3 are installed on the middle rod 1 in a detachable state, the main bone 4 is installed on the upper nest 2 in a detachable state, and the support bone 5 is installed on the lower nest 3 in a detachable state.

[0187] According to such a structure, when disassembling the umbrella U, the upper nest 2 and the lower nest 3 can be easily separated from the middle rod 1. The main frame 4 can be easily disassembled from the upper nest 2, and the support frame 5 can be easily disassembled from the lower nest 3. That is, the umbrella U can be easily repaired, and can be easily disassembled when discarded and recycled.

[0188] In addition, Figure 1 and Figure 2 At least one of the middle rod 1, the upper nest 2, the lower nest 3, the main bone 4 and the supporting bone 5 is formed of biomass plastic (biodegradable plastic).

[0189] According to such a structure, the waste can be regenerated as an organic resource and can be decomposed into carbon dioxide and water by the action of microorganisms in the soil after landfill treatment.

[0190] In addition, Figure 1 or Fig.11 As shown, the umbrella cloth 6 is formed by a fabric made of recycled polyester.

[0191] This structure can contribute to a society that reduces environmental load and does not disrupt the ecological balance.

[0192] In addition, Figure 3 As shown, an umbrella top 8 is provided which is mounted on an upper nest 2. The upper nest 2 has: a flange portion 21 formed at an upper end portion, and an external thread portion 26 protruding upward from the flange portion 21. The umbrella top 8 has: an umbrella top body 81 formed with an internal thread portion 81a which is screwed with the external thread portion 26, an anti-slip portion 82 arranged at an upper end portion of the umbrella top body 81, and a sealing portion 83 arranged at a lower end portion of the umbrella top body 81. The umbrella top body 81, the anti-slip portion 82 and the sealing portion 83 are formed integrally.

[0193] According to such a structure, the anti-slip part 82 and the sealing part 83 are not separated from the umbrella top body 81, so they are not easy to fall off. In addition, in the umbrella top 8, the anti-slip part 82 and the sealing part 83 are formed integrally, so that the anti-slip function and the function as a sealing member are exerted by one member, and the number of parts and assembly man-hours can be reduced.

[0194] In addition, Figure 3 As shown, the anti-slip portion 82 and the sealing portion 83 are formed of silicone or rubber.

[0195] According to such a structure, the anti-slip function of the umbrella top 8 and the function of the sealing member can be improved.

[0196] [First Modification]

[0197] Above, refer to Figures 1 to 12 , the flexible joint J involved in this embodiment is described in detail, but the present invention is not limited to this and can be appropriately changed within the scope of the present invention.

[0198] For example, the structure of the umbrella top 8 may be appropriately changed. Fig.13 It is an exploded enlarged cross-sectional view showing a first modified example of the umbrella top of the umbrella according to the embodiment of the present invention.

[0199] like Fig.13 As shown in the top 8A, it can also be a non-slip part 82A in the form of covering the top body 81A. The non-slip part 82A includes: a spherical outer fitting part 82Aa fitted on the hemispherical part 81Ad formed on the upper end of the top body 81A, and a cylindrical part 82Ab inserted into the non-slip fitting hole 81Ac.

[0200] In this case, the anti-slip portion 82A and the sealing portion 83 are formed of silicone resin or rubber, and are integrally formed on the resin umbrella top body 81 by injection molding or the like.

[0201] If the hemispherical spherical outer fitting portion 82Aa covering the umbrella top body 81A is provided, the surface area of ​​the anti-slip portion 82A becomes larger, so the area of ​​the part that exerts the anti-slip function can be made larger.

[0202] [Second Modification]

[0203] Fig.14 It is an exploded enlarged cross-sectional view showing a second modified example of the umbrella top of the umbrella according to the embodiment of the present invention.

[0204] Fig.14 The umbrella top 8B of the second modified example shown has a non-slip and sealing portion 82B integrally formed of silicone resin or rubber.

[0205] The umbrella top body 81B includes an internal thread portion 81a, a thread insertion hole 81b, an anti-slip fitting hole 81Bc, a hemispherical portion 81Bd, and a cylindrical portion 81Be. The outer periphery of the hemispherical portion 81Bd is formed in a substantially hemispherical shape. The cylindrical portion 81Be is formed in a cylindrical shape without a step from the outer peripheral surface of the hemispherical portion 81Bd.

[0206] The anti-skid and sealing part 82B is a silicone resin or rubber member formed in a manner to cover the entire umbrella top body 81B, and is attached to the entire outer peripheral surface of the umbrella top body 81B. The anti-skid and sealing part 82B has an anti-skid part 82Ba, a spherical part 82Bb, an embedding part 82Bc, a cylindrical part 82Bd, and a sealing part 82Be.

[0207] The anti-slip portion 82Ba is a portion that functions as an anti-slip member. The anti-slip portion 82Ba is configured to include a spherical portion 82Bb and an inserting portion 82Bc.

[0208] The spherical portion 82Bb is a portion whose outer peripheral surface is formed in a substantially hemispherical shape.

[0209] The fitting portion 82Bc is a portion that is fitted into the anti-slip fitting hole 81Bc of the umbrella top body 81B, and is formed to protrude downward from the inner surface of the spherical portion 82Bb in a cylindrical shape.

[0210] The cylindrical portion 82Bd is a portion formed in a cylindrical shape without a step from the spherical portion 82Bb having a hemispherical outer peripheral surface.

[0211] The sealing portion 82Be is placed on the ceiling cloth 61 and is a portion that performs a sealing function.

[0212] The umbrella top 8B of the second modified example has an anti-slip and sealing portion 82B formed by integrally forming an anti-slip portion 82Ba and a sealing portion 82Be, so that the umbrella top body 81 can be attached in a manner that the entire outer periphery is covered by the anti-slip and sealing portion 82B.

[0213] [Third Modification]

[0214] Fig.15 It is a side view showing a third modified example of the umbrella according to the embodiment of the present invention. Fig.16 1 is a diagram showing a third modified example of the umbrella according to the embodiment of the present invention, and is an exploded enlarged side view showing an upper nest and a lower nest. Fig.17 It is a diagram showing a third modified example of the umbrella according to the embodiment of the present invention, and is an enlarged perspective view showing an upper nest. Fig.18 It is a figure which shows the 3rd modification of the umbrella concerning embodiment of this invention, and is an enlarged perspective view which shows the principal part of a lower nest.

[0215] like Fig.15 and Fig.16 As shown, in the umbrella U1, the length L3 from the bottom of the main bone supporting part 22 to the top of the branch bone supporting part 32 when the engaging part 2a of the upper nest 2C and the engaged part 3a of the lower nest 3C are engaged can also be set to be, for example, longer than the length L1 (see Figure 1) is 10.5 cm shorter than 1.5 cm, and the length L4 from the center of the locking portion 52 b of the support bone 5 to the center of the locking portion 53 b can also be set to be, for example, shorter than the length L2 (refer to Figure 1 ) 0.9cm shorter 26.1cm (reference Figure 2 ). The length L3 is Fig.16 The length shown is the sum of the length L31 from the bottom surface of the main bone supporting part 22 to the upper tube part 23C and the length L32 from the top surface of the pedicle bone supporting part 32 to the upper end of the lower tube part 31C.

[0216] Therefore, if Fig.15 As shown, the branch opening angle θ4 from the outer peripheral surface of the lower tube portion 31C centered on the branch support portion 32 when the umbrella U1 is opened to the branch 5C is, for example, larger than the branch opening angle θ3 (refer to Figure 1 ) Large 85 degrees.

[0217] According to this composition, Fig.15 The umbrella U1 shown is Figure 1 Compared with the umbrella U, the length L3 from the bottom of the main bone support part 22 to the top of the branch bone support part 32 is longer than the length L1 (refer to Figure 1 ) is shortened, and the length L4 from the center of the locking portion 52b of the support bone 5C to the center of the locking portion 53b is shorter than the length L2 (refer to Figure 1 ) is shortened, and the rib opening angle θ4 from the outer peripheral surface of the lower tube portion 31C centered on the rib support portion 32 to the rib 5C is set to 85 degrees, thereby preventing the ribs from bending outward due to strong winds (the opposite state to the normal umbrella open state).

[0218] In addition, if Fig.16 and Fig.17 As shown, a pin setting hole 25Ca for setting the pin 20 may also be formed at a location where the external thread portion 26 is formed.

[0219] In addition, if Fig.16 and Fig.18 The lower tube portion 31C of the lower nest 3C shown in the figure has a length L32 from the upper surface of the support bone support portion 32 to the upper end of the lower tube portion 31C. Figure 2 The length L12 from the bottom surface of the main bone supporting part 22 to the lower tube part 31C is shortened, so that the strength can be improved.

[0220] [Other Modifications]

[0221] In addition, in the above embodiment, Figure 1 The middle rod 1 shown in the figure is a double-layer structure with inner and outer layers formed of glass fiber or carbon fiber and outer layers formed of resin, but the invention is not limited thereto. The middle rod 1 may also be made of non-ferrous metal, such as aluminum alloy, or stainless steel.

[0222] Thus, even if the center rod 1 is made of non-ferrous metal such as aluminum alloy or stainless steel, it has corrosion resistance and strength. In addition, as described above, the components such as the center rod 1 used in the umbrella U can be easily assembled or easily disassembled, so even if the center rod 1 is made of non-ferrous metal or stainless steel, it can be recycled by smoothly separating waste.

Claims

1. An umbrella comprising: mid-stick; An upper nest, which is installed on the upper end of the middle rod; A lower nest slidably mounted on the middle rod; A main bone, which is installed on the upper nest; A supporting bone connecting the lower nest with the main bone; and The umbrella cloth is installed on the main frame. The umbrella is characterized in that A snap-fit ​​portion is formed at the lower end of the upper nest. An engaged portion that can be attached to and detached from the engaging portion is formed at an upper end portion of the lower nest.

2. The umbrella according to claim 1, characterized in that , The upper nest has: A main bone supporting portion connected to the main bone; and The upper tube portion is formed on the lower side of the main bone support portion. The lower nest has: A spur support portion connected to the spurs; and The lower tube portion is formed on the upper side of the support bone supporting portion. The upper tube portion is formed with an insertion portion to be inserted into the lower tube portion, The engaging portion is composed of a convex portion formed on the outer peripheral portion of the lower end portion of the insertion portion, and the engaged portion is composed of a concave portion formed on the inner wall of the lower tube portion.

3. The umbrella according to claim 1, characterized in that , The upper nest has: A main bone supporting portion connected to the main bone; and The upper tube portion is formed on the lower side of the main bone support portion. The lower nest has: A spur support portion connected to the spurs; and The lower tube portion is formed on the upper side of the support bone supporting portion. The lower tube portion is formed with an insertion portion to be inserted into the upper tube portion, The engaging portion is formed by a recess formed on the inner wall of the upper tube. The engaged portion is constituted by a convex portion formed on the outer peripheral portion of the upper end portion of the insertion portion.

4. The umbrella according to claim 1, characterized in that , The upper nest and the lower nest are installed on the middle rod in a detachable state. The main bone is installed on the upper nest in a detachable state. The support bones are installed on the lower nest in a detachable state.

5. The umbrella according to claim 4, characterized in that , At least one of the middle rod, the upper nest, the lower nest, the main bone, and the branch bone is formed of biomass plastic.

6. The umbrella according to claim 1, characterized in that , The umbrella cover is formed by fabric made of recycled polyester.

7. The umbrella according to claim 1, characterized in that , A parasol top is installed on the upper nest, The upper nest has: a flange portion formed at the upper end portion; and an external threaded portion, which protrudes upward from the flange portion, The umbrella top has: An umbrella top body, which is formed with an internal thread portion that is screwed with the external thread portion; an anti-slip portion, which is disposed at the upper end of the umbrella top body; and A sealing portion is arranged at the lower end of the umbrella top body. The umbrella top body, the anti-slip portion and the sealing portion are formed integrally.

8. The umbrella according to claim 7, characterized in that , The anti-slip portion and the sealing portion are formed of silicone resin or rubber.

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