Double parasol rotating mechanism and double parasol using rotating mechanism

Abstract

A double parasol rotating mechanism of the present invention is installed to rotate a double parasol centered on a prop with the force of wind, wherein the double parasol comprises an upper awning fabric having a plurality of upper umbrella ribs that are formed radially, and a lower awning fabric having a plurality of lower umbrella ribs that are radially under the upper awning fabric with a vertically spaced space therebetween. The rotating mechanism comprises: a bucket comprising a bucket surface portion which is installed between the upper and lower awning fabrics and is formed to be concave in order to receive the pressure of wind, and an outer surface portion which is convex to deflect the wind; and at least two connection members which hang and connect the upper end portion of the bucket to each of the upper umbrella ribs to be rotatable, wherein the lower end of the outer surface portion forming a free end portion of the bucket extends to a position overlapping one side of the body of each lower umbrella rib so that, when the bucket surface portion receives the wind pressure, the free end portion at the lower end of the outer surface portion is supported by the lower umbrella ribs and generates a rotating force, and on the other hand, when the wind pressure is applied to the outer surface portion, the bucket rotates from the connection member as a start point so that the free end portion is spaced apart from the lower awning fabric, and thus, the space is opened so that the wind flows between the lower awning fabric and the free end portion.

Description

Rotating mechanism of a double parasol and a double parasol using the rotating mechanism

[0001] The present invention relates to a double parasol and a rotation mechanism for the double parasol, and more specifically, to a double parasol in which the double parasol is configured to be rotatable around a support as a central axis, and a rotation mechanism capable of rotating the double parasol by the force of wind blowing through the gap between the upper and lower awnings of the double parasol is installed in a detachable manner in the gap between the upper and lower awnings, and the rotation mechanism is rotated by the force of the wind received by the rotation mechanism.

[0002] In general, parasols are used to block the sunlight and provide a comfortable rest at beaches or business places. However, among the parasols used in this way, if the sunshade is made of a single piece of cloth, there is a problem that the heat is aggravated because the geothermal and radiant heat transmitted to the inside of the parasol rises and cannot escape to the outside, but stagnates, and there is also a problem that it easily shakes or falls over even with a slight wind.

[0003] Therefore, recently, double parasols have been developed and used to easily release geothermal and radiant heat transmitted inside the parasol to the outside while reducing the effects of wind.

[0004] Parasols, like umbrellas, are devices designed to block sunlight and are typically constructed in a similar fashion to umbrellas, with a visor made of fabric or vinyl sheeting, shaped like the sloping surface of a cone or pyramid, supported by a ribbed structure. Furthermore, when not in use, the visor and visor can be folded down to rest against a support, reducing the overall volume for storage.

[0005] Looking at the structure of a typical parasol in more detail with reference to Fig. 1, the parasol includes a support (2), a plurality of umbrella ribs (14) that are rotatably fixed at one end directly to the upper end of the support (2) or through a fixing hub (11) installed at the upper end of the support (2) and installed to extend radially from the support when opened, a support rib (16) having one end that rotatably supports the middle portion of the umbrella ribs (14) from below, a slide (18) that is rotatably fixed to the other end of the support rib (16) and installed to be able to move up and down along the outer surface of the support in the longitudinal direction of the support (2), and a sunshade (12) that is fixedly supported at a plurality of portions by the umbrella ribs (14) to block rain or sunlight. In addition, a fixing member (10) that fixes the slide (18) to maintain or release the umbrella in an opened state is typically installed on the upper portion of the support (2).

[0006] Parasols of this type have a wide awning, so when they are in use and are spread out and fixed, they are greatly affected by the wind. If the parasol is blown away or shakes violently by a strong wind, it can cause various inconveniences to the user, such as not only damage to the parasol, but also the table to which the parasol is fixed falling over, damage to the lamp fixed to the parasol, and injury to the user.

[0007] Additionally, if a parasol is placed on a table and exposed to strong sunlight or if cooking is done on the table, heat, smoke, and odors may accumulate under the concave area of ​​the parasol, causing discomfort to the user.

[0008] To solve this problem, a double parasol has been developed and is being used in which a part of the awning fabric in the central part of the parasol is removed to create a hole, or a part of the awning fabric is removed and an upper structure with a small awning fabric installed at a certain interval at the top to cover the removed part has been installed (see Patent Documents 1 to 3).

[0009] However, in these conventional double parasols, the small awning cloth of the upper structure is supported and fixed by a rib structure similar to the rib structure for the awning cloth of the lower structure, which is the conventional part below it, and this rib structure of the upper structure operates in conjunction with the umbrella ribs or supports for the lower awning cloth. Accordingly, the awning cloth of the upper structure is installed roughly parallel to the awning cloth of the lower structure with a predetermined vertical gap, and has a downward concave cone or pyramid structure like the awning cloth of the lower structure.

[0010] In this state, the wind coming in from the bottom of the lower structure's awning mostly passes through the hole in the center of the lower structure's awning due to the concave shape of the lower structure's awning and is focused on the upper structure's awning. Since the upper structure's awning also has a concave shape, most of the wind's force acts on the upper structure's awning and then changes direction and escapes through the narrow channel between the lower structure's awning and the upper structure's awning.

[0011] In this configuration, wind force first acts on the parasol through the upper structure's awning fabric. When the wind is strong or blowing heavily, the narrow channel makes it difficult for the wind to easily escape, and a strong force is still exerted on the parasol. Therefore, it has the limitation of being unable to adequately address the problems of the parasol blowing away or fluttering significantly, as was the case with conventional structures.

[0012] In this way, when the outside wind is relatively calm and the sunlight is strong, an air current rises due to the heat from the bottom of the double parasol and is discharged outside the awning through the space (channel) between the upper and lower awnings. However, when the wind is relatively strong, the air flows inside the parasol through the space (channel) of the part that receives the headwind. As explained above, the action of this lateral wind exerts a strong force in one direction on the double parasol, which inevitably causes it to become unstable. In addition, although the double parasol itself looks romantic when installed, it is always static and does not move, so there was a regret that it lacked an element that could arouse interest along with the pursuit of romance of the existing double parasol.

[0013] Accordingly, the applicant of the present invention, through Korean Patent Application No. 10-2022-0055293, has proposed a rotating mechanism for a double parasol including a metal or plastic rotating blade that is inserted radially between the upper and lower awning fabrics and the upper and lower awning fabrics in the upper and lower space when the double parasol is unfolded and is fixed by the upper and lower elastic action of the awning fabrics, and has an inner curved surface that receives wind pressure and an outer surface that deflects the wind, so that the double parasol is rotated by the wind pressure applied to the inner surface. When the wind blows, the rotating mechanism rotates the double parasol by the wind.

[0014] However, according to the above-mentioned invention of the prior art patent application for the rotating mechanism for the double parasol, it is still a valid invention because it has the advantage of being easy to attach, detach, and store the rotating mechanism, but when the concave front of one bucket of the parasol receives the wind and generates rotating force, the wind hitting the back of the other bucket is designed to smoothly pass by, thereby minimizing the factor of reducing the rotating force, but even if the wind is strong, the resistance acting on the back of the other bucket also increases proportionally, so the size of the rotating force of the double parasol is determined depending on how much the resistance of the wind acting on the other bucket can be reduced, so the design of the rotating mechanism that can reduce the size of the rotating resistance force (braking force) is important.

[0015] {Prior art literature}

[0016] [Patent Document]

[0017] (Patent Document 1) Korean Utility Model Registration No. 20-0181838 (registered on March 2, 2000)

[0018] (Patent Document 2) Korean Utility Model Registration No. 20-0466053 (registered on March 20, 2013)

[0019] (Patent Document 3) Korean Utility Model Registration No. 20-0442131 (registered on October 2, 2008)

[0020] (Patent Document 4) Korean Patent Publication No. 10-2005-0119715 (published on December 22, 2005)

[0021] (Patent Document 5) International Publication No. WO 00 / 022951 (Published on April 27, 2000)

[0022] (Patent Document 6) Korean Utility Model Registration No. 20-0181838 (registered on March 2, 2000)

[0023] (Patent Document 7) Korean Patent Application No. 10-2022-0055293 (filed on May 4, 2022)

[0024] Accordingly, the present invention has been proposed in consideration of the above-mentioned points, and its purpose is to provide a rotation mechanism for a double parasol that is installed outdoors and rotates a double parasol using the power of the wind, thereby eliminating factors that reduce the rotational force and maximizing the efficiency of wind pressure so that the double parasol can rotate smoothly, thereby creating a dynamic aesthetic through the rotation of the double parasol, and having a very simple structure and being easy to install, remove, and store, and a double parasol employing the rotation mechanism.

[0025] In order to achieve the above object, the present invention provides a rotation mechanism for a double parasol, comprising an upper awning having a plurality of upper ribs formed radially, and a lower awning having a plurality of lower ribs formed radially with a space spaced vertically below the upper awning, wherein the rotation mechanism is installed to rotate the double parasol with the force of the wind around a support, wherein the rotation mechanism comprises a bucket having a bucket surface portion installed in a space between the upper and lower awnings and formed concavely or flatly to receive the pressure of the wind, and a convex outer surface portion or a flat outer surface portion that guides the wind to be deflected; It is formed by including at least two connecting members that rotatably connect the upper part of the bucket to each of the upper umbrella ribs, and the lower end of the outer surface part constituting the free end of the bucket is formed to extend to a position overlapping one side of the body of each of the lower umbrella ribs, so that when the bucket surface part receives wind pressure, the free end of the lower end of the outer surface part is supported by the lower umbrella rib to generate rotational force, and on the other hand, when wind pressure is applied to the outer surface part, the bucket rotates based on the connecting members so that the free end part is separated from the lower awning cloth, thereby opening a space between the bucket and the lower awning cloth to allow wind to flow.

[0026] According to a preferred embodiment of the present invention, the lower part of the connecting member is formed of an Ω-shaped elastic body having elasticity to rotatably connect the bucket, and the upper part is formed of an Ω-shaped elastic body having elasticity to receive and retain the upper umbrella rib when fitted to the upper umbrella rib through the opening.

[0027] According to the present invention, the connecting member is formed of a flexible metal wire, which wraps around the upper umbrella rib and twists and binds both ends together to rotatably hang the bucket on the upper umbrella rib, or is formed of a string member made of a synthetic resin material or a fiber material, which wraps around the upper umbrella rib and knots both ends together to rotatably hang the bucket on the upper umbrella rib.

[0028] According to the present invention, the hooks for fitting are formed integrally or separately on both the left and right sides of the upper part of the bucket and are adhesively fixed to the bucket, so that the bucket is rotatably connected to the connecting member through the hooks for fitting.

[0029] In addition, according to the present invention, the connecting member is characterized in that it has a protrusion formed at the lower portion to form a space for accommodating the upper portion of the bucket in order to prevent interference between the upper portion of the bucket and the upper umbrella rib.

[0030] According to the present invention, a bucket having a radial rotating mechanism is installed between the upper and lower awning cloths of a double parasol so as to be detachably attached to each upper umbrella rib, and the back surface (convex or flat surface) of the lower free end of the bucket is supported by the lower umbrella rib, so that when wind pressure acts on the concave or flat surface of the bucket, the bucket is supported by the lower umbrella rib and receives the wind pressure without being pushed back, thereby generating the rotational force of the parasol. On the other hand, when wind pressure acts on the outer surface (back surface), the bucket rotates backward from the connecting member due to the wind pressure, thereby opening the space between the bucket and the lower awning cloth, thereby allowing a large amount of wind to quickly flow away, thereby minimizing the braking force that reduces the rotational force, thereby having the effect of increasing the rotational efficiency of the double parasol.

[0031] According to this structure, when the double parasol is folded and stored, the connecting member that connects the bucket of the rotation mechanism to the upper umbrella rib can be easily separated from the upper umbrella rib, so that the double parasol and the rotation mechanism can be stored separately and then easily reassembled for use, making it easy to remove and attach with an extremely simple structure. In particular, the braking force, which is a factor in reducing the rotation force, can be reduced, so the rotation efficiency is excellent. In addition, by efficiently rotating the double parasol using the natural wind in this way, a dynamic aesthetic can be achieved, such as by tying a colorful ribbon to the lower umbrella rib to make it flutter while rotating, so that a more romantic look can be pursued. In addition, by dispersing the wind pressure applied in a certain direction through the rotation of the double parasol, the phenomenon of the double parasol fluttering violently due to the wind is reduced, so that a stable effect is achieved.

[0032] Figure 1 is a drawing showing the structure of a conventional general parasol.

[0033] Figure 2 is a drawing showing the appearance of a double parasol according to the present invention installed on an outdoor table.

[0034] Figure 3 is a cross-sectional drawing showing the skeleton of the double parasol of the present invention.

[0035] Figure 4 is a drawing showing a ventilation hole formed in the center of the double parasol of the present invention.

[0036] Fig. 5 is a perspective view showing one embodiment of a rotating mechanism for a double parasol according to the present invention.

[0037] Figure 6 is a drawing showing a side cross-sectional shape of a rotating mechanism for a double parasol according to the present invention.

[0038] Fig. 7 is a drawing showing a cross-sectional shape of a bucket constituting a rotating mechanism for a double parasol according to the present invention.

[0039] Fig. 8 is a drawing showing the shape of one embodiment of a connecting member constituting a rotating mechanism for a double parasol according to the present invention.

[0040] Fig. 9 is a drawing showing the shape of another embodiment of a connecting member constituting a rotating mechanism for a double parasol according to the present invention.

[0041] Fig. 10 is a front view showing a modified embodiment of the rotation mechanism for the double parasol of the present invention.

[0042] Fig. 11 is a drawing showing a side cross-sectional shape of the rotating mechanism of Fig. 10.

[0043] Fig. 12 is a drawing showing the shape of another embodiment of a connecting member constituting a rotating mechanism for a double parasol according to the present invention.

[0044] Fig. 13 is a drawing showing a state in which the rotating mechanism of the present invention is mounted on an upper umbrella rib, and is a drawing showing the support state of the rotating mechanism and the rotation direction of the parasol when wind pressure is applied to the front part of the rotating mechanism bucket.

[0045] Fig. 14 is a drawing showing a state in which the rotating mechanism of the present invention is mounted on an upper umbrella rib, and is a drawing showing the rotation state of the rotating mechanism bucket and the release of wind pressure when the rear surface of the rotating mechanism bucket reaches a position where wind pressure is applied.

[0046]

[0047] Before describing the present invention, the following specific structural and functional descriptions are merely illustrative for the purpose of explaining embodiments according to the concept of the present invention, and embodiments according to the concept of the present invention may be implemented in various forms and should not be construed as being limited to the embodiments described in this specification.

[0048] Furthermore, embodiments according to the concept of the present invention can be modified in various ways and take on various forms. Therefore, specific embodiments are illustrated in the drawings and described in detail in this specification. However, this is not intended to limit embodiments according to the concept of the present invention to specific disclosed forms, and it should be understood that all modifications, equivalents, and alternatives included within the spirit and technical scope of the present invention are included.

[0049] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components in between. Conversely, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between. Other expressions used to describe the relationship between components, such as "between" and "directly between" or "adjacent to" and "directly adjacent to," should be interpreted similarly.

[0050] The terminology used herein is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. It should be understood that the terms "comprises" or "has" in this specification are intended to specify the presence of implemented features, numbers, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0051] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0052] Hereinafter, the double parasol and the rotating mechanism according to the present invention will be described together with reference to the drawings. In the following description, the upper part in the drawings will be described as the upper part and the lower part as the lower part.

[0053] Fig. 2 is a drawing showing the appearance of a double parasol according to the present invention installed on an outdoor table, and Fig. 3 is a drawing showing a cross-sectional shape for showing the frame of the double parasol of the present invention. Except for the bearing structure at the bottom of the support (20), which is the central axis support of the double parasol, the remaining configurations are the same for both.

[0054] A double parasol (100) is composed of a support (20), an upper structure installed at the top of the support (20), and a lower structure installed at the second upper end (i.e., the bottom of the top end) of the support (20).

[0055] The lower structure installed on the upper part of the vehicle is responsible for the main shading function of the double parasol (100) and has a structure identical or similar to the awning cloth and umbrella rib structure of a conventional parasol. A lower hub (22) is fixedly installed on the upper part of the support (20). One end of the lower (main) umbrella rib (24) is rotatably fixed to this lower hub (22), so that when the other end of the lower umbrella rib (24) is raised and unfolded, a plurality of umbrella ribs (24) (typically composed of 8 umbrella ribs having a 45° fan angle) are installed to extend radially with the support (20) as the center. One end of a support rib (26) is rotatably fixed to the middle part of these lower umbrella ribs (24) from below. The other end of the support rib (26) is rotatably fixed to a slide (28) that is installed so as to be able to move along the outer surface of the support (20) in the longitudinal direction of the support (20).

[0056] Figure 4 is a drawing showing a lower (main) awning cloth. The lower (main) awning cloth (32) is formed by removing the central portion above the inclined surface of a cone or a pyramidal prism to create a ventilation hole (30). When in an unfolded state, the upper peripheral portion forming the boundary surrounding the ventilation hole (30) and the lower peripheral portion forming the outer periphery of the awning cloth (32) are fixed to a plurality of umbrella ribs (24).

[0057] When the double parasol (100) is unfolded and used, when the slide (28) is pushed up along the support (20), the support ribs (26) whose lower ends are fixed to the slide (28) in the lower structure also receive upward force, and the middle part of the lower umbrella rib (24) fixed to one end of the support rib (26) also moves upward, causing the plurality of umbrella ribs (24) to move upward. At this time, since one end of the umbrella rib (24) is rotatably fixed to the upper end of the support (20) through the lower hub (22), the entire lower (main) umbrella rib (24) forms a shape that extends radially outward, and the lower (main) awning cloth (32) fixed to the umbrella rib (24) is also unfolded with the central portion having an open hole (30).

[0058] The upper structure installed at the top performs a supplementary shading function for the part that is open upward due to the ventilation hole (30) of the lower awning cloth (32) of the double parasol (100) while allowing air to circulate through the ventilation hole (30) in the center of the lower awning cloth (32) (see Fig. 4 showing the lower awning cloth), and also forms the parasol into a double structure so that rain can be blocked from entering through the open part (hole 30).

[0059] The upper structure has an upper awning (34) and upper umbrella ribs (36) similar to the lower structure (the installation angle and number of the upper umbrella ribs are the same as those of the lower umbrella ribs, and the upper and lower umbrella ribs are spaced vertically and match each other). In addition, an upper hub (38) is fixedly installed at the top of the support (20). One end of the upper umbrella ribs (36) forming the upper structure is rotatably fixed to the upper hub (38), so that when the other end of the upper umbrella ribs (36) is raised and unfolded, a plurality of upper umbrella ribs (36) are installed so that they all extend radially and unfold simultaneously with the support (20) as the center. And as shown in FIGS. 2 and 3, between each upper umbrella rib (36) and each corresponding lower umbrella rib (24), standing support ribs (40) having a predetermined height (length) are connected to the members (24, 36) on both sides with a hinge structure that can rotate, so that when the double parasol (100) is unfolded, the standing support ribs (40) are in an upright state and support the upper and lower awning cloths (34, 32) to maintain an upper and lower space (S) spaced apart by a predetermined height, and when the double parasol (100) is folded, the upper and lower awning cloths (34, 32) are folded flat so that the members including the upper and lower awning cloths are rotated and folded so that they are in close contact with each other.

[0060] And the biggest difference between the double parasol (100) of the present invention and conventional parasols is that a bearing structure such as a rotary cloud bearing (42) and / or a thrust ball bearing is mounted on the outer periphery and / or bottom surface of the lower portion of the support (20), and the outer ring is fixed by a key and a key groove-like engagement on the inner surface of the groove (48) of the support support portion (46: fixed mounting portion) formed on the outdoor table (44) of FIG. 2, and only the inner ring fixed to the support is configured to rotate together with the support.

[0061] Alternatively, instead of being fixedly installed on the outer periphery of the support (20), the above-mentioned rotary cloud bearing (42) may be fixedly installed on the inner surface of the groove (48) of the support support portion (46: fixed mounting portion) formed on the outdoor table (44), and a key or keyway (not shown) may be formed on the lower portion of the support (20) to be fitted, and a keyway or key having a corresponding (complementary) structure may be formed on the inner retainer, which is an inner component of the above-mentioned rotary cloud bearing (42), so that the key and the keyway are coupled in a protruding manner when the support (20) is fitted into the support support portion (46).

[0062] Accordingly, the double parasol (100) can rotate horizontally on the table (44) through the support (20) that is rotatably supported by the bearing structure.

[0063] FIGS. 5 and 6 illustrate a rotating mechanism capable of rotating a double parasol (100) of the present invention, wherein the rotating mechanism (50) comprises a bucket surface (52) (front portion) which is installed in the space between the upper and lower sunshades (34, 32) and is formed to be concave to receive wind pressure, a convex outer surface portion (52a) which is the back surface of the bucket surface (52) and guides the wind to be deflected, and a bucket (56) which includes a triangular or semicircular side member (54) which blocks both side surfaces so that the wind is not dispersed to the outside from the bucket surface (52) but is concentrated in the concave space, and two connecting members (58) which are formed at least at two locations on both sides of the bucket (56) and which rotatably connect the upper end of the bucket (56) to each of the upper umbrella ribs (36).

[0064] Fig. 7 is a bucket of a rotating mechanism capable of rotating the double parasol of the present invention. Holes (60) are formed at two locations on the left and right sides of the upper part of the bucket (56), and the connecting member (58) is connected through these holes (60).

[0065] The bucket (56) of the present invention is defined as a product having a concave bowl shape as well as a flat plate capable of receiving wind or a flat plate having side walls on both left and right ends for the purpose of increasing the concentration of wind, thereby forming a 'ㄷ' shape, and is formed of a metal material or a plastic material. Preferably, it is formed of a transparent or colored plastic material that can withstand wind pressure while minimizing weight, or a stainless steel material that is rigid and can be made very thin to reduce weight and is not corroded by moisture.

[0066] The above connecting member (58) is manufactured as an Ω-shaped elastic body that is injected using a metal wire or synthetic resin with strong elasticity, and is formed to have an internal receiving space (64) by the metal wire main body (62), and the upper umbrella rib (36) is fitted and received in this receiving space (64) and installed. At this time, the free ends on both sides of the connecting member (58) spread apart to receive the upper umbrella rib (36) in the internal receiving space (64), and then close in an Ω shape by the restoring elastic force to wrap and retain the upper umbrella rib (36), and in this coupled state, the bucket (56) can rotate around the connecting member (58). To this end, the inner diameter (d1) of the connecting member (58) is formed to be, if possible, much larger than the outer diameter of the upper umbrella rib (36) formed as a solid body or a hollow pipe body, and when the connecting member (58) is fitted to the upper umbrella rib (36) in this state, the upper end of the bucket (56) does not interfere with the upper umbrella rib (36), so that the bucket (56) can freely rotate due to wind pressure with the connecting member (58) as the starting point.

[0067] On the contrary, the diameter (d1) of the inner space (64) of the Ω-shaped connecting member (58a) can be configured to be smaller than the outer diameter of the upper umbrella rib (36). In this state, when the connecting member (58a) is fitted to the upper umbrella rib (36), the outer surface of the upper umbrella rib (38) is pressed and fixed by the restorative elastic force at both ends of the inlet of the connecting member (58a) in the opened state. At this time, if the upper end of the bucket (56) and the upper umbrella rib (36) come into direct contact and interfere, the rotational movement of the bucket (56) is hindered. Therefore, in order to prevent interference between the two members (36, 56), as shown in FIG. 8, a protrusion (66) is provided at the lower end of the connecting member (56a) so that the upper hole (60) of the bucket (56) is fitted into the protrusion (66), thereby preventing the bucket (56) located in the space (68) formed by the protrusion (66). The upper body and the upper umbrella rib (36) accommodated in the space (64) are prevented from contacting or interfering with each other, thereby allowing the bucket (56) to rotate freely. Meanwhile, the configuration of the protrusion (66) and the space (68) can also be applied to the configuration of FIG. 6, in which the diameter (d1) of the space (64) is relatively larger than that of FIG. 8.

[0068] FIG. 9 is a drawing showing a modified embodiment of a connecting member of the present invention. The connecting member (58b) of the same embodiment is formed by twisting a lower protrusion (66a) into a figure 8 shape, and is mounted by inserting a hole (60) into the lower protrusion (66a), thereby clearly distinguishing a space (70) formed by the main body receiving space (64) and the lower protrusion (66a), thereby preventing interference between the two members (36, 56) and preventing interference in the rotational movement of the bucket (56).

[0069] FIG. 10 is a drawing showing a modified embodiment of the rotary mechanism of the present invention, wherein the bucket (56a) of the rotary mechanism (50a) according to the embodiment has a structure in which a metallic wire member (74) having a fitting hook (72) for fitting into a space (70) of a lower protrusion (66a) of a connecting member (58b) is bonded to the bucket surface (52) instead of the hole (60) in the bucket (56) according to the embodiment of FIG. 5.

[0070] The above wire member (74) is formed of a metal wire, and the fitting hook (72) portion is formed to be spaced apart from the bucket surface (52), and is configured so that the lower protrusion (66a) of the connecting member (58b) can be fitted through the spaced gap. In addition, the fitting hook (72) can also be formed integrally with the connecting member (58b) by plastic injection molding.

[0071] FIG. 12 is another embodiment of the connecting member of the present invention, and its basic shape is the same as FIG. 9, except that the 8-shaped connecting member (58c) is formed of a flexible metal wire member, so that when the rotating mechanism (56a) is mounted on the upper umbrella rib (36), the outer periphery of the upper umbrella rib (36) is wrapped around its two ends (76a, 76b), and then the two ends (76a, 76b) are twisted together to complete the mounting. When the rotating mechanism (56a) is removed, the twisted state of the two ends (76a, 76b) can be untwisted. Here, the material of the connecting member (58a) is preferably a flexible metal wire, but it can also be formed of a flexible plastic wire or a fibrous string member. In this case, the connecting member (58a) can be easily separated by tying the two ends (76a, 76b) in a knot that can be untied from each other. At this time, it is recommended that the knot be tied so that there is room for the rotation mechanism (56a) to not interfere with the upper umbrella rib (36) so that the rotation mechanism (56a) can be shaken by the wind.

[0072] FIG. 13 is a drawing showing a state in which the rotating mechanism of the present invention is mounted on an upper umbrella rib, and the lower end (52a-1) of the convex outer surface (52a) constituting the free end (52a-1) is formed to extend to a position where it overlaps one side of the body of each lower umbrella rib (24), so that when the concave bucket surface (52) receives wind pressure, the free end (52a-1) is supported by the lower umbrella rib (24) to generate a rotational force, so that the parasol rotates in the rotational movement direction (see the arrow mark in FIG. 13), and on the other hand, when wind pressure is applied to the convex outer surface (52a), which is the back surface of the bucket (56a), as shown in FIG. 14, the bucket (56a) rotates clockwise around the protrusion (66a) of the connecting member (58b) (based on the illustrated state in FIG. 14) so ​​that the free end (52a-1) is lower By being separated from the awning (32), a space is opened to allow wind to flow between the lower awning (32), and the degree of rotation of the bucket (56a) gradually increases from the dashed-dotted line to the dashed-dotted line position in proportion to the wind strength.

[0073] To explain in more detail, the bucket that receives the wind pressure directly from the front in line with the wind direction is supported by the lower umbrella rib (24) at the free end (52a-1) at the lower back side, so that the wind pressure is converted into the rotational force of the parasol (state of FIG. 13), and on the other hand, the bucket that is opposite to the bucket that receives the wind pressure from the front at a position of 180 degrees is in a state where its back is turned to the wind direction, that is, the back side (52a) of the bucket receives the wind pressure, so this acts as a braking force that reduces the one-way rotational force of the parasol, but at this time, the bucket (56a) that receives the wind pressure at the back side (52a) does not have a structure that supports the free end (52a-1) from the rear in the wind direction against the wind pressure (in FIG. 14, the lower umbrella rib (24) is located on the windward side, so the bucket (56a) is in a cantilever state that cannot exert a support reaction force against the wind), and the bucket (56a) is in a state where its back side shape Not only does it induce the wind to flow to both the left and right sides and let it flow to some extent, but the bucket (56a) rotates clockwise based on the city state with the fitting hook (72) as the starting point due to the wind pressure received on the back (refer to the locations of the dashed-dotted and two-dotted lines), thereby forming a gap (space) through which the wind can pass between it and the lower awning cloth (32), so that most of the wind hitting the back is quickly discharged by flowing backwards without much resistance through the open lower space, thereby reducing the braking force that causes the rotational force of the parasol to be small, and thus increasing the rotational force of the parasol by that much.

[0074] In this way, when the entire double parasol (100) rotates, strong wind pressure is dispersed, thereby improving the stability of the installation. In addition, since the double parasol (100) can rotate even with small wind pressure, the visual aesthetic effect is greatly enhanced through the rotation of the parasol. At this time, when colorful ribbons are hung on the eaves of the lower ribs (24) of the double parasol (100), the ribbons of various beautiful colors flutter and rotate, thereby further enhancing the visual aesthetic effect and achieving the effect of relieving boredom.

[0075] Meanwhile, in cases where the double parasol is not used due to strong winds or cold weather, etc. and needs to be folded, the connecting member (58, 58a, 58b) can be simply separated from the upper umbrella rib (36) and the double parasol can be folded and stored separately. When the double parasol is unfolded and used, the rotating mechanism of the present invention can be re-attached to the upper umbrella rib (36) and used.

[0076] The present invention is not limited to the above-described embodiments, and various modifications are possible. For example, the present invention includes configurations substantially identical to those described in the embodiments (e.g., configurations having the same functions, methods, and results, or configurations having the same purposes and effects). Furthermore, the present invention includes configurations that replace non-essential parts of the configurations described in the embodiments. Furthermore, the present invention includes configurations that have the same operational effects as those described in the embodiments, or configurations that can achieve the same purposes. Furthermore, the present invention includes configurations that add publicly known techniques to the configurations described in the embodiments.

[0077] [Explanation of symbols]

[0078] 100: Double parasol 20: Support

[0079] 22: Lower hub 24: Lower umbrella rib

[0080] 26: Support 28: Slide

[0081] 30: Ventilation hole 32: Lower (main) awning

[0082] 34: Upper awning 36: Upper umbrella rib

[0083] 38: Upper hub 40: Standing support bar

[0084] 42: Cloud bearing 44: Table

[0085] 46: Supporting part (fixed mounting part) 48: Groove

[0086] 50,50a: Rotating mechanism 52: Bucket face (front)

[0087] 52a: Convex outer surface (back surface) 54: Side member

[0088] 56, 56a: Bucket 58, 58a, 58b: Connecting member

[0089] 60: Hole 62: Metal wire body

[0090] 64: Reception space 66,66a: Projection

[0091] 68: Space 70: Space

[0092] 72: Hook for fitting 74: Wire member

[0093] 76a,76b: End

Claims

1. A double parasol including an upper awning having a plurality of upper ribs formed radially, and a lower awning having a plurality of lower ribs formed radially with a space spaced vertically below the upper awning, is provided with a rotation mechanism that rotates the parasol around a support by the force of the wind, wherein the rotation mechanism comprises a bucket having a bucket surface portion that is formed concavely or flatly to receive wind pressure and a convex or flat outer surface portion that guides the wind to be deflected, installed in a space between the upper and lower awnings; A rotating mechanism for a double parasol, comprising: at least two connecting members that rotatably connect the upper end of the bucket to each of the upper umbrella ribs; wherein the lower end of the outer surface portion constituting the free end of the bucket is formed to extend to a position overlapping one side of the body of each of the lower umbrella ribs, so that when the bucket surface portion receives wind pressure, the free end of the lower end of the outer surface portion is supported by the lower umbrella rib to generate rotational force; and on the other hand, when wind pressure is applied to the outer surface portion, the bucket rotates around the connecting members so that the free end portion is separated from the lower awning cloth, thereby opening a space between the bucket and the lower awning cloth to allow wind to flow.

2. In paragraph 1, A rotating mechanism for a double parasol, characterized in that the lower part of the connecting member is formed of an elastic body having an Ω shape that has elasticity to receive and retain the upper umbrella rib when the upper umbrella rib is fitted through the opening so as to rotatably connect the bucket, and the upper part is formed of an elastic body having elasticity so as to receive and retain the upper umbrella rib when the upper umbrella rib is fitted through the opening.

3. In paragraph 1, A rotating mechanism for a double parasol characterized in that the connecting member is formed of a flexible metal wire, wrapped around the upper umbrella rib, twisted and tied at both ends to rotatably hang the bucket on the upper umbrella rib, or formed of a string member made of synthetic resin or fiber, wrapped around the upper umbrella rib, and knotted at both ends to rotatably hang the bucket on the upper umbrella rib.

4. In paragraph 1, A rotating mechanism for a double parasol characterized in that the hooks for fitting are formed integrally or separately on both the left and right sides of the upper part of the bucket and are adhesively fixed to the bucket, and the bucket is rotatably connected to the connecting member through the hooks for fitting.

5. In any one of paragraphs 2 to 4, A rotating mechanism for a double parasol, characterized in that the connecting member has a protrusion formed at the bottom to form a space for accommodating the upper end of the bucket to prevent interference between the upper end of the bucket and the upper umbrella rib.

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