A bidirectional opening and closing outdoor center column umbrella

Abstract

The utility model discloses a two -way open and shut's outdoor center column umbrella, including rib assembly, fixed umbrella disc, movable umbrella disc and center column, is equipped with the traction umbrella rope and winding device in the center column, and winding device includes a pair of mutually buckling mounting seat, and its inside rotation is connected with the winding shaft of hand of area, and the winding wheel is screwed in the middle part of winding shaft and is equipped with ratchet assembly and stop piece in proper order on the both sides of winding wheel, and ratchet assembly includes the ratchet wheel of opposite winding shaft free rotation, ratchet wheel buckle and reset torsional spring, wherein the ratchet tooth of both sides ratchet wheel sets up to the reverse direction. The utility model discloses utilize and screw the winding wheel of winding shaft left and right movement pressure tight corresponding side ratchet assembly realizes one spare one use, realizes the umbrella of winding wheel no matter how rotates can realize opening, has the anti -back self -locking function under arbitrary open and shut state, and the rotation direction is consistent with the ratchet tooth direction of ratchet wheel that plays the anti -back self -locking function, makes outdoor umbrella have two -way open and shut, and open and shut saves the labor, and the operation is convenient, and the umbrella surface state is stable, and the experience is good etc.

Description

Technical Field

[0001] This utility model belongs to the field of outdoor center-pole umbrella technology, and specifically relates to an outdoor center-pole umbrella that can be opened and closed in both directions. Background Technology

[0002] Most existing outdoor center-pole umbrellas open and close by winding or releasing the paracord using a crank. To allow the umbrella to be in any open or closed state during operation, a one-way anti-locking mechanism, such as a ratchet assembly, is usually installed on the winding shaft at the paracord winding end. This type of outdoor center-pole umbrella can only be opened in the unlocked direction of the one-way anti-locking mechanism. When attempting to open the umbrella in the opposite direction, it will be restricted by the locking of the one-way anti-locking mechanism and cannot be opened, or it will not be able to lock effectively after opening. Once the user releases the crank, the umbrella will automatically close under its own weight and become unusable, causing some degree of inconvenience to the user.

[0003] Furthermore, the traction rope of existing outdoor center-pole umbrellas is usually a single rope, with one end acting on the moving canopy. During the traction process, the rope is easily affected by the external environment and sways, which increases the friction between the moving canopy and the center column. This can hinder the smooth opening and closing of the canopy, affecting the user's experience. Especially when both the moving canopy and the center column are made of metal, it can also cause accelerated wear and tear on the umbrella components. Utility Model Content

[0004] The purpose of this invention is to propose a bidirectional opening and closing outdoor center-pole umbrella to solve the problems of outdoor center-pole umbrellas only being able to open in one direction and the lack of smooth opening and closing due to single parasol rope traction, which leads to a poor user experience.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model proposes a bidirectional opening and closing outdoor center-post umbrella, including an umbrella rib assembly, a fixed umbrella disc, a movable umbrella disc, and a center post that are connected to each other. The center post is equipped with an umbrella cord and a cord winding device. One end of the umbrella cord is fixed to the movable umbrella disc, and the other end is wound around the cord winding device. The cord winding device includes a pair of interlocking mounting seats. A cord winding shaft is rotatably connected to the mounting seats. A crank is connected to one end of the cord winding shaft. A cord winding wheel is threadedly connected to the middle of the cord winding shaft. The cord winding shaft is equipped with a ratchet assembly and a stop on both sides of the cord winding wheel. The stop is located outside the ratchet assembly. The ratchet assembly includes a ratchet, a ratchet buckle, and a return torsion spring. The ratchet is rotatably mounted on the cord winding shaft. The ratchet teeth on both sides of the ratchet are arranged in opposite directions. The ratchet buckle engages with the ratchet teeth on the ratchet. The ratchet buckle is connected to the mounting seat through the return torsion spring.

[0007] Based on the above technical solution, by turning the crank, the rope winding shaft rotates, and the rope winding wheel moves forward under the action of the screw thread, pressing the ratchet in the forward direction against the stop. This causes the rope winding wheel, ratchet, and stop to form an integrated structure through static friction. The rope winding shaft continues to rotate, causing the rope winding wheel to wind or release the parasol rope to open and close the umbrella canopy. At this time, the pressed ratchet is used as an anti-reverse self-locking component, while the unpressed ratchet is restricted by the ratchet buckle and rotates freely relative to the rope winding shaft, without constituting a restriction on the rope winding wheel. When the crank is operated in the opposite direction, the rope winding wheel moves to the other side, and the two ratchets switch states, with the pressed ratchet still serving as the anti-reverse self-locking component. The outdoor umbrella using this rope winding device achieves its operation through the threaded engagement of the rope winding wheel and the rope winding shaft, as well as two sets of ratchet assemblies arranged in opposite directions. This ensures that the ratchet teeth of the ratchet on the pressed side are always facing the same direction regardless of how the rope winding wheel rotates, eliminating the need to overcome the reverse interaction between the ratchet teeth and the ratchet buckle. It also features an anti-reverse self-locking function in any open or closed state. Furthermore, when the outdoor umbrella is in the closed state, turning the crank in any direction will open the umbrella. This gives the outdoor umbrella the characteristics of being able to open and close in both directions, being effortless to open and close, convenient to operate, having a stable umbrella surface, and providing a good user experience.

[0008] Preferably, the rope winding device further includes a rope guide assembly, which is located above the rope winding wheel. The rope guide assembly includes a set of fixed rods and a pulley rotatably mounted on the fixed rods. The pulley grooves of the pulleys are arranged opposite each other to form a channel for the paracord to pass through. This design provides limiting protection for the paracord through the pulley grooves, keeping the paracord in a suspended state and preventing it from being damaged by rubbing against surrounding components (such as the central column wall, mounting base, etc.), thus extending the service life of the paracord. At the same time, the pulley structure can rotate with the paracord without generating additional resistance.

[0009] Preferably, the stop is a bearing, which is located between the rope winding shaft and the mounting base. This design uses the bearing as both a rotating component and a ratchet stop, which simplifies the structure of the rope winding device, reduces the rotational resistance of the rope winding shaft, and makes opening and closing easier.

[0010] Preferably, there is one reset torsion spring, and the ends of the reset torsion spring are respectively connected to the ratchet buckles on both sides of the rope winding shaft, so as to simplify the internal structure of the rope winding device, make it easier to assemble, and realize the synchronous locking of the ratchets on both sides, making the opening and closing control more stable.

[0011] Preferably, the paracord has two sections, including an upper paracord and a lower paracord, which are connected by a movable pulley assembly. The movable pulley assembly includes a pulley seat and a first pulley. The first pulley is located on the upper end of the pulley seat. After the upper paracord passes over the first pulley, both ends are fixed to the movable paracord disc. The upper end of the lower paracord is connected to the lower end of the pulley seat, and the lower end is wound around the rope winding wheel. This design utilizes the characteristics of the movable pulley to always maintain the same length of paracord acting on the movable paracord disc, making the movement of the movable paracord disc more stable. It also helps to reduce local friction between the movable paracord disc and the central column, making opening and closing more effortless.

[0012] Furthermore, the lower end of the pulley seat is provided with a rotary connector, which includes an upper part and a lower part that can rotate relative to each other. The upper part is fixed on the pulley seat, and the lower part is connected to the upper end of the lower paracord. This design utilizes the rotary connector to release the torsional force generated during the use of the upper paracord (the paracord and the moving pulley assembly are suspended in the air, which inevitably causes swaying and easily leads to relative twisting of the paracord), thus preventing the upper paracord from twisting and tangling, which would affect the opening and closing operation.

[0013] Furthermore, a second pulley is provided below the first pulley, and the pulley grooves of the first pulley and the second pulley are arranged opposite each other to form a paracord groove. The upper paracord passes through the paracord groove so that the upper paracord is always confined within the paracord groove to prevent the upper paracord from detaching from the first pulley.

[0014] Preferably, a guide assembly is provided between the moving umbrella disc and the center column. The guide assembly includes a guide sleeve, a protective outer sleeve, and a guide sleeve seat. The guide sleeve is slidably fitted onto the outside of the center column. One end of the guide sleeve penetrates the inner cavity of the moving umbrella disc, and the other end is connected to the guide sleeve seat. The protective outer sleeve is provided on the outside of the guide sleeve. The guide sleeve is made of a soft, wear-resistant material. This design, by setting a soft guide sleeve, extends the axial contact area between the moving umbrella disc and the center column, achieving flexible contact, improving the moving stability of the moving umbrella disc, and preventing damage to the surface of the center column due to hard friction, which affects its service life and aesthetics. At the same time, the protective outer sleeve can be matched with the moving umbrella disc to allow for specific appearance designs or the placement of functional components, enhancing the aesthetics and functional requirements of the umbrella body.

[0015] Furthermore, the guide sleeve extends upwards or downwards from the moving umbrella disc along the central column, creating different design effects.

[0016] Beneficial effects

[0017] One of the above technical solutions has the following advantages or beneficial effects:

[0018] 1) To address the limitation of existing outdoor umbrellas, which are restricted to unidirectional opening due to the anti-reverse locking requirement during opening and closing, causing operational inconvenience for users, a new design is developed. This design involves a rope winding device with a threaded connection between the rope winding wheel and the rope winding shaft, and the installation of opposing ratchet assemblies on both sides of the rope winding wheel. During rotation, the rope winding wheel moves left and right to press the corresponding ratchet assembly, achieving a standby state. This ensures that regardless of the direction of rotation, the rope winding wheel is always in the direction of the ratchet teeth on the pressed side, eliminating the need to overcome the reverse interaction between the ratchet teeth and the ratchet buckle. The anti-reverse locking function is present in any opening or closing state. Furthermore, when the outdoor umbrella is closed, turning the crank in any direction will open the umbrella. This design makes the outdoor umbrella bidirectionally openable, effortless to operate, convenient to use, with a stable canopy, and a good user experience.

[0019] 2) To address the issue that existing outdoor umbrellas use a single paracord for traction, which is easily affected by the external environment, leading to obstructed opening and closing of the umbrella canopy, affecting the user experience, and accelerating wear on umbrella components, the paracord is divided into an upper paracord and a lower paracord connected by a movable pulley assembly. The upper paracord is wound around the first pulley, and its two ends are connected to the movable umbrella disc. By utilizing the characteristics of the movable pulley, the length of the paracord acting on the movable umbrella disc is always the same, allowing the movable umbrella disc to move smoothly relative to the central column. This effectively reduces local friction between the movable umbrella disc and the central column, making the opening and closing process smoother and less strenuous, while also protecting the umbrella components.

[0020] 3) To improve the smoothness and aesthetics of outdoor umbrella opening and closing, a guide sleeve made of soft, wear-resistant material and a protective outer sleeve are installed between the moving umbrella disc and the center column. This extends the axial contact area between the moving umbrella disc and the center column and achieves flexible contact, improving the stability of the moving umbrella disc and preventing damage to the surface of the center column due to hard friction, which would affect its service life and aesthetics. The protective outer sleeve is matched with the moving umbrella disc to allow for specific appearance design or the installation of functional components, thereby enhancing the aesthetics and functionality of the umbrella. Attached Figure Description

[0021] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0024] Figure 3 Here are schematic diagrams of the rope winding device of this utility model: (a) is a schematic diagram of the overall assembly; (b) is a schematic diagram of the rope guide assembly.

[0025] Figure 4 This is an exploded structural diagram of the rope winding device of this utility model;

[0026] Figure 5 This is an exploded view of the movable pulley assembly of this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the guide component of this utility model, (a) is embodiment one, and (b) is embodiment two;

[0028] In the diagram: 1. Umbrella rib assembly; 2. Fixed umbrella disc; 3. Moving umbrella disc; 4. Center column; 5. Parachute cord; 51. Upper parachute cord; 52. Lower parachute cord; 6. Cord winding device; 61. Hand crank; 62. Mounting base; 63. Cord winding shaft; 64. Cord winding wheel; 65. Ratchet assembly; 651. Ratchet buckle; 652. Return torsion spring; 653. Stop; 66. Cord guide assembly; 67. Fixing rod; 671. Pulley; 672. Channel; 673. Moving pulley assembly; 71. Pulley seat; 72. First pulley; 73. Second pulley; 74. Parachute cord groove; 75. Rotary connector; 75. Upper part; 751. Lower part; 752. Guide assembly; 8. Guide sleeve; 81. Protective outer sleeve; 82. Guide sleeve seat; 83. Screw; 84. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the embodiments, but the implementation of the present invention is not limited thereto.

[0030] The present invention will be further described in detail below with reference to the embodiments, but the implementation of the present invention is not limited thereto.

[0031] like Figure 1 and Figure 2 As shown, this utility model provides a bidirectional opening and closing outdoor center-post umbrella, including an umbrella rib assembly 1, a fixed umbrella disc 2, a movable umbrella disc 3, and a center post 4 that are connected to each other. The center post 4 contains an umbrella cord 5 and a cord winding device 6. One end of the umbrella cord 5 is fixed to the movable umbrella disc 3, and the other end is wound around the cord winding device 6. Figure 3 (a) Figure 4As shown, the rope winding device 6 includes a pair of interlocking mounting seats 62. A rope winding shaft 63 is rotatably connected inside the mounting seats 62. A crank 61 is connected to one end of the rope winding shaft 63. A rope winding wheel 64 is threadedly connected to the middle of the rope winding shaft 63. The rope winding shaft 63 is provided with ratchet assemblies 65 and stops 66 on both sides of the rope winding wheel 64. The stops 66 are located on the outside of the ratchet assembly 65. The ratchet assembly 65 includes a ratchet 651, a ratchet buckle 652, and a return torsion spring 653. The ratchet 651 is rotatably mounted on the rope winding shaft 63. The ratchet teeth of the ratchet 651 on both sides are oriented in the same direction. The ratchet buckle 652 engages with the ratchet teeth on the ratchet 651. The ratchet buckle 652 is connected to the mounting seat 62 through the return torsion spring 653. Preferably, there is one return torsion spring 653, and the two ends of the return torsion spring 653 are respectively connected to the ratchet buckles 652 on both sides of the rope winding shaft 63.

[0032] Furthermore, such as Figure 3 As shown in (b), a rope guide assembly 67 is provided above the rope winding wheel 64. The rope guide assembly 67 includes a set of fixed rods 671 and a pulley 672 rotatably mounted on the fixed rods 671. The pulley grooves of the pulley 672 are arranged opposite to each other to form a channel 673 for the paracord 5 to pass through, thereby limiting and protecting the paracord 5 so that it is suspended in the air and avoids being scratched and damaged by surrounding components.

[0033] Furthermore, such as Figure 4 As shown, the stop 66 is a bearing, which is located between the rope winding shaft 63 and the mounting base 62. It serves as a rotating component and a ratchet stop to simplify the structure and reduce the rotational resistance of the rope winding shaft 63.

[0034] The following reference Figure 4 Taking the structure of the rope winding device 6, in which the ratchet teeth of the left ratchet 651 of the rope winding wheel 64 face counterclockwise and the ratchet teeth of the right ratchet 651 of the rope winding wheel 64 face clockwise as an example, the working state is explained as follows:

[0035] When the umbrella needs to be opened, crank 61 is turned clockwise or counterclockwise. For ease of explanation, clockwise rotation is used as an example. This causes the rope winding shaft 63 to rotate clockwise. The rope winding wheel 64, under the action of the thread, moves to the right until it completely presses the right ratchet 651 against the right bearing. The rope winding wheel 64, the right ratchet 651, and the right bearing form an integrated structure under the action of static friction. At this time, the right ratchet 651 can prevent the rope winding wheel 64 from rotating in the opposite direction, thus achieving anti-reverse self-locking. The left ratchet 651 is in the reverse rotation state, and the restricted ratchet buckle 652 will rotate freely relative to the rope winding shaft 63, not constituting the restriction of the rope winding wheel 64. The rope winding shaft 63 continues to rotate. Rotating the crank 64 winds the parachute rope 5, controlling the moving parachute disc 3 to move upwards, opening the parachute rib assembly 1, completing the opening action. When the parachute needs to be opened, turning the crank 61 counterclockwise moves the winding wheel 64 to the left, releasing the right ratchet 651 and pressing the left ratchet 651 and the left bearing. The winding wheel 64, the left ratchet 651, and the left bearing form a single structure under static friction. At this time, the left ratchet 651 prevents the winding wheel 64 from rotating in the opposite direction, achieving anti-reverse self-locking, while the right ratchet 651 is in a free state. Continuing to rotate the winding shaft 63 moves the moving parachute disc 3 downwards until the parachute rib assembly 1 is fully closed, completing the closing action. In this state, whether the crank 61 is turned counterclockwise or clockwise, a second opening action can be performed.

[0036] Based on the above solution, the rope wheel 64 can move to the left or right through the threaded engagement with the rope shaft 63, so that one side ratchet assembly 65 can perform the anti-reverse self-locking function, while the other side ratchet assembly 65 is in a standby state. This allows the rope wheel 64 to open the umbrella no matter how it rotates, and it has the anti-reverse self-locking function in any open or closed state. Moreover, the direction of rotation must be consistent with the direction of the ratchet teeth of the ratchet 651 that performs the anti-reverse self-locking function. This makes the outdoor umbrella bidirectionally openable and easy to operate, with a stable canopy state and a good user experience.

[0037] As a preferred implementation method, refer to Figure 2 The paracord 5 has two sections, including an upper paracord 51 and a lower paracord 52, which are connected by a movable pulley assembly 7. Figure 5 As shown, the movable pulley assembly 7 includes a pulley seat 71 and a first pulley 72. The first pulley 72 is rotatably mounted on the upper end of the pulley seat 71 via a pin. Preferably, a second pulley 73 is provided below the first pulley 72. The first pulley 72 and the second pulley 73 form a pulley group, and their pulley grooves are arranged opposite each other to form a paracord groove 74. The upper paracord 51 passes through the paracord groove 74 and is wound around the first pulley 72. The upper paracord 51 extends upward and is fixed to the movable paracord disc 3. The end of the upper paracord 51 can pass through the central post 4 and be fixed to the movable paracord disc 3, or it can be... Figure 2As shown, the parachute cord 5 is fixed vertically downwards onto the movable parachute cord 3 after passing through the fixed parachute disc 2 to reduce friction at the bends of the cord 5 and to distribute the force more evenly. The upper end of the lower parachute cord 52 is connected to the lower end of the pulley seat 71, and the lower end is wound around the cord winding wheel 64. The length of the lower parachute cord 52 is greater than the length required for opening and closing the umbrella. Preferably, the lower end of the pulley seat 71 is connected to the lower parachute cord 52 through a rotary connector 75. The rotary connector 75 includes an upper part 751 and a lower part 752 that can rotate relative to each other. The upper part 751 is fixed to the mounting base 62 by means of a pin engagement or other means. The lower part 752 is connected to the upper end of the lower parachute cord 52. Through the mutual rotation of the upper part 751 and the lower part 752, the torsional force generated by the upper parachute cord 51 due to factors such as the suspension of the parachute cord 5 and the movable pulley assembly 7 during use is released, avoiding the twisting and tangling of the upper parachute cord 51 and increasing the opening and closing resistance.

[0038] As a preferred embodiment, a guide assembly 8 is provided between the movable parachute disc 3 and the central column 4 to extend the axial contact area between the movable parachute disc 3 and the central column 4, thereby improving the stability of the movable parachute disc 3's movement. The guide assembly 8 includes a guide sleeve 81, a protective outer sleeve 82, and a guide sleeve seat 83. The guide sleeve 81 is slidably fitted onto the outside of the central column 4 and is made of soft, wear-resistant materials such as rubber, polyurethane, and PVC to create a flexible contact between the guide sleeve 81 and the central column 4, avoiding rigid friction between the metal movable parachute disc 3 and the central column 4, and effectively protecting the outer surface of the central column 4. One of the guide sleeves 81... The guide sleeve 81 extends through the inner cavity of the moving umbrella disc 3, meaning its outer side is in contact with the moving umbrella disc 3 and its inner side is in contact with the outer surface of the central column 4. The other end of the guide sleeve 81 is connected to the guide sleeve seat 83, which is fixed to the moving umbrella disc 3 by a screw 84. The protective outer sleeve 82 is located outside the guide sleeve 81 and is confined between the moving umbrella disc 3 and the guide sleeve seat 83. The protective outer sleeve 82 can be designed to adapt to different shapes and quantities of the moving umbrella disc 3 and the umbrella body. It can be used solely for aesthetic design or designed as a functional component such as Bluetooth or a speaker to enhance the aesthetics and functional requirements of the umbrella body.

[0039] Preferably, the guide sleeve 81 extends upward or downward from the movable umbrella disc 3 along the central column 4, that is, it is disposed above or below the movable umbrella disc 3 to meet different design requirements. Specifically, for example... Figure 6 As shown in (a), the upper end of the guide sleeve 81 is embedded between the movable umbrella disc 3 and the central column 4 to form a mutual isolation between the two, and the protective outer sleeve 82 and the guide sleeve seat 83 are both located below; or as shown in (a). Figure 6 As shown in (b), the lower end of the guide sleeve 81 is embedded between the moving umbrella disk 3 and the central column 4 to form mutual isolation between the two, and the protective outer sleeve 82 and the guide sleeve seat 83 are both located on the upper part.

[0040] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A bidirectional opening and closing outdoor center-post umbrella, comprising an umbrella rib assembly, a fixed umbrella disc, a movable umbrella disc, and a center post that are connected to each other, wherein the center post is provided with an umbrella cord and a cord winding device, one end of the umbrella cord is fixed to the movable umbrella disc, and the other end is wound around the cord winding device; characterized in that: The rope winding device includes a pair of interlocking mounting seats. A rope winding shaft is rotatably connected inside the mounting seats. A crank is connected to one end of the rope winding shaft. A rope winding wheel is threadedly connected to the middle of the rope winding shaft. The rope winding shaft is provided with ratchet assemblies and stops on both sides of the rope winding wheel. The stops are located outside the ratchet assemblies. The ratchet assembly includes a ratchet, a ratchet buckle, and a return torsion spring. The ratchet is rotatably mounted on the rope winding shaft. The ratchet teeth on both sides of the ratchet are arranged in opposite directions. The ratchet buckle engages with the ratchet teeth on the ratchet. The ratchet buckle is connected to the mounting seats through the return torsion spring.

2. The outdoor center-column umbrella with bidirectional opening and closing according to claim 1, characterized in that: The rope winding device also includes a rope guide assembly, which is located above the rope winding wheel. The rope guide assembly includes a set of fixed rods and a pulley rotatably mounted on the fixed rods. The pulley grooves of the pulleys are arranged opposite each other to form a channel for the paracord to pass through.

3. The outdoor center-column umbrella with bidirectional opening and closing according to claim 1, characterized in that: The stop is a bearing, which is located between the rope winding shaft and the mounting base.

4. The outdoor center-column umbrella with bidirectional opening and closing according to claim 1, characterized in that: The reset torsion spring is a single spring, and the ends of the reset torsion spring are respectively connected to the ratchet buckles on both sides of the rope winding shaft.

5. The outdoor center-column umbrella with bidirectional opening and closing according to claim 1, characterized in that: The paracord has two sections, including an upper paracord and a lower paracord. The upper and lower paracords are connected by a movable pulley assembly. The movable pulley assembly includes a pulley seat and a first pulley. The first pulley is located on the upper end of the pulley seat. After the upper paracord passes over the first pulley, both ends are fixed to the movable paracord disc. The upper end of the lower paracord is connected to the lower end of the pulley seat, and the lower end is wound around the rope winding wheel.

6. The outdoor center-column umbrella with bidirectional opening and closing according to claim 5, characterized in that: The lower end of the pulley seat is provided with a rotary connector, which includes an upper part and a lower part that can rotate relative to each other. The upper part is fixed on the pulley seat, and the lower part is connected to the upper end of the lower paracord.

7. The outdoor center-column umbrella with bidirectional opening and closing according to claim 5, characterized in that: A second pulley is provided below the first pulley, and the pulley grooves of the first pulley and the second pulley are arranged opposite each other to form a paracord groove, through which the upper paracord passes.

8. The outdoor center-column umbrella with bidirectional opening and closing according to claim 1, characterized in that: A guide assembly is provided between the moving umbrella disc and the central column. The guide assembly includes a guide sleeve, a protective outer sleeve, and a guide sleeve seat. The guide sleeve is slidably sleeved on the outside of the central column. One end of the guide sleeve passes through the inner cavity of the moving umbrella disc, and the other end is connected to the guide sleeve seat. The protective outer sleeve is provided on the outside of the guide sleeve. The guide sleeve is made of a soft and wear-resistant material.

9. The outdoor center-column umbrella with bidirectional opening and closing according to claim 8, characterized in that: The guide sleeve extends upward or downward from the moving umbrella disc along the central column.

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