An easy-to-open outdoor umbrella

Abstract

This utility model discloses an easy-to-open outdoor umbrella, including a central column, an umbrella tray, an umbrella rib assembly, and an umbrella fabric. A hinge seat is ringed around the umbrella tray, and a limiting part protrudes from the hinge seat. The umbrella rib assembly is connected to the hinge seat via an umbrella rib connector. The umbrella rib connector includes an anti-dead-angle mechanism, which comprises a limiting block, a torsion spring, and a first pin. The limiting block abuts against the hinge seat and the limiting part. The torsion spring is embedded in the limiting block and has a first torsion arm abutting against the limiting block and a second torsion arm abutting against the umbrella rib connector. The first pin passes through the torsion spring and the limiting block and is fixed to the umbrella rib connector. This utility model, by incorporating an anti-dead-angle mechanism, utilizes the limiting block to rotate against the hinge seat and abut against the limiting part when fully closed to form a limit. The torsion spring ensures that the umbrella rib assembly is always driven by a force to open, preventing jamming or dead angles after closing and facilitating rapid opening of the umbrella rib assembly, achieving smooth and effortless umbrella opening.

Description

Technical Field

[0001] This utility model belongs to the field of outdoor umbrella technology, and specifically relates to an outdoor umbrella that is easy to open. Background Technology

[0002] Outdoor umbrellas consist of a central column, canopy, ribs, and fabric, with the ribs and canopy connected by a hinge structure. Due to the large unfolded area of ​​outdoor umbrellas and the significant weight of the ribs and fabric, when closed, the ribs and canopy can easily overlap excessively, causing the hinge structure to jam or create dead angles of interference. This results in difficulty reopening the umbrella, increased effort in operation, a reduced user experience, and accelerated wear on the hinge structure. Furthermore, existing hinge structures also suffer from the problem of hinge pins easily loosening due to frequent opening and closing, requiring frequent maintenance, increasing maintenance costs, and impacting the user experience. Utility Model Content

[0003] The purpose of this invention is to propose an outdoor umbrella that is easy to open, in order to solve the problems of existing outdoor umbrellas, such as unsmooth opening and closing, frequent maintenance, high maintenance costs, and poor user experience.

[0004] This utility model is achieved through the following technical solution:

[0005] This utility model proposes an easy-to-open outdoor umbrella, including a center column, an umbrella tray, an umbrella rib assembly, and an umbrella fabric. A traction component is provided inside the center column. A hinge seat is ringed around the umbrella tray, which includes a fixed umbrella tray and a movable umbrella tray. The umbrella rib assembly is connected to the hinge seat via an umbrella rib connector. A limiting part protrudes from the side of the hinge seat near the umbrella tray. An anti-loosening mechanism is provided at the connection between the umbrella rib connector and the hinge seat. An anti-dead-angle mechanism is provided inside the umbrella rib connector, which cooperates with the limiting part. The anti-dead-angle mechanism includes... The umbrella assembly includes a limiting block, a torsion spring, and a first pin. The limiting block includes an abutting portion and a connecting portion. The abutting portion abuts against the hinge seat and can rotate along the hinge seat. When the umbrella rib assembly is fully closed, the abutting portion abuts against the limiting portion. The torsion spring is embedded in the connecting portion. A first torsion arm abutting against the connecting portion is formed in the middle of the torsion spring, and second torsion arms abutting against the umbrella rib connector are formed on both sides of the torsion spring. The first pin passes through the torsion spring and the connecting portion and is fixed to the umbrella rib connector.

[0006] Based on the above technical solution, an anti-dead-angle mechanism is set in the umbrella rib connector to cooperate with the umbrella disc hinge seat and the limiting part. The limiting block rotates along the arc surface of the hinge seat as the umbrella rib assembly rotates. When fully closed, it completely abuts against the limiting part to form a limit and twist the torsion spring. At the same time, the first torsion arm of the torsion spring acts on the limiting block to achieve indirect fixation with the hinge seat, and the second torsion arm acts on the umbrella rib connector. The torsional force generated by the torsion spring ensures that the umbrella rib assembly is always subject to a potential driving force to push it open. When the umbrella opening action is performed, it assists in pushing the umbrella rib assembly to open quickly, effectively avoiding "dead angles" or "jamming" in the opening action, ensuring the smoothness of the opening, and making the outdoor umbrella easy to open.

[0007] Preferably, the limiting block further includes a stop portion, which is located between the abutment portion and the connecting portion, and is used to prevent the limiting block from rotating too much and disengaging from the hinge seat when the umbrella rib assembly is closed.

[0008] Preferably, the anti-loosening mechanism includes an anti-rotation threaded pin and a first screw. The anti-rotation threaded pin has a cylindrical structure in the middle for rotatably connecting with the hinge seat. The anti-rotation threaded pin has polygonal first anti-rotation bosses on both sides. The umbrella rib connector has corresponding first anti-rotation grooves that mate with the first anti-rotation bosses. The screw passes through the first anti-rotation groove and is screwed onto the anti-rotation threaded pin. This design, through the cooperation between the anti-rotation threaded pin and the first anti-rotation groove, ensures that the umbrella rib assembly maintains a relatively fixed engagement angle with the anti-rotation threaded pin in any state, effectively preventing relative rotation between the screw and the anti-rotation threaded pin, thereby achieving the anti-loosening effect.

[0009] Preferably, the anti-loosening mechanism includes a locking bolt and a second screw. The locking bolt includes a nut and a smooth rod. The end of the smooth rod away from the nut is provided with a countersunk hole with internal threads. The second screw is screwed into the countersunk hole. A second anti-rotation boss is provided at the connection between the nut and the smooth rod. The umbrella rib connector is provided with a second anti-rotation groove that mates with the second anti-rotation boss. The smooth rod passes through the second anti-rotation groove and the hinge seat and is screwed into the second screw. This design maintains a fixed engagement angle between the locking bolt and the umbrella rib connector through the cooperation of the locking bolt and the umbrella rib connector, thereby achieving the purpose of preventing loosening.

[0010] More preferably, the second anti-rotation boss is at least one strip-shaped protrusion arranged radially along the nut.

[0011] Preferably, the umbrella rib assembly includes a main umbrella rib and a supporting rib that are connected to each other. The inner end of the main umbrella rib is provided with an umbrella fabric tensioning device, and the outer end is provided with a first umbrella fabric hook. The umbrella fabric tensioning device includes a tension spring and a second umbrella fabric hook. One end of the tension spring is fixed to the main umbrella rib, and the other end is connected to the second umbrella fabric hook. The second umbrella fabric hook is ring-shaped. Both ends of the umbrella fabric are respectively hung on the first umbrella fabric hook and the second umbrella fabric hook. This design uses the tension spring to keep the umbrella fabric in a relatively taut state whether the umbrella is open or closed, avoiding damage caused by the umbrella fabric being too loose and rubbing against the umbrella rib assembly, umbrella disc, etc., or the umbrella fabric falling off the first umbrella fabric hook.

[0012] In a further preferred embodiment, the main umbrella rib is provided with a sliding groove, the umbrella fabric tensioning device is embedded in the sliding groove, the umbrella fabric forms a stitch line corresponding to the sliding groove, and a drop bead is provided at intervals on the stitch line. The drop bead is slidably disposed in the sliding groove. This design, through the cooperation of the sliding groove and the drop bead, allows the stitch line of the umbrella fabric to be contained in the umbrella rib sliding groove, while forming a windproof fixing point for the umbrella fabric, making the umbrella fabric look neater and more beautiful.

[0013] Preferably, the traction assembly includes an upper parachute rope, a lower parachute rope, a fixed pulley, a movable pulley assembly, and a rope winding device. After the upper parachute rope passes over the movable pulley assembly, both ends pass over the fixed pulleys on the fixed parachute disc and are then fixed to the movable parachute disc. The upper end of the lower parachute rope is fixed to the movable pulley assembly, and the lower end is wound around the rope winding device. This design utilizes the movable pulley to form two equal-length upper parachute ropes, improving the movement stability of the movable parachute disc, reducing opening resistance, and making opening the parachute easier.

[0014] More preferably, the rope winding device includes a housing, a rope winding shaft, a rope winding wheel, a ratchet assembly arranged in opposite directions, and a bearing. The ratchet assembly is located on the rope winding shaft and is distributed on both sides of the rope winding wheel. The rope winding wheel is threadedly connected to the rope winding shaft. This design allows for opening the umbrella in any direction and enables anti-reverse self-locking in any state, which can further improve the convenience of opening the umbrella.

[0015] Preferably, the movable umbrella disc and the center column are connected by a guide assembly. The guide assembly includes a guide sleeve, an outer sleeve, and a guide sleeve seat. The guide sleeve is made of a soft, wear-resistant material. One end of the guide sleeve penetrates the inner cavity of the movable umbrella disc, and the other end extends upward or downward along the center column and connects to the guide sleeve seat. The outer sleeve is located outside the guide sleeve. This design utilizes the guide sleeve to extend the axial contact area between the movable umbrella disc and the center column and achieves flexible contact, which helps protect the outer surface of the center column and reduce the moving resistance of the movable umbrella disc, thus reducing the difficulty of opening the umbrella.

[0016] Beneficial effects

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

[0018] 1) To address the issue of excessive overlap between the umbrella ribs and the umbrella disc during the closing of existing outdoor umbrellas, which can easily lead to jamming or structural interference dead angles at the hinges and result in unsmooth umbrella opening, an anti-dead angle mechanism including a limiting block and a torsion spring is incorporated into the umbrella rib connector. When the umbrella rib assembly rotates, the limiting block rotates against the arc-shaped surface of the hinge seat, and when fully closed, it completely abuts against the limiting part to form a limit. Simultaneously, the first torsion arm of the torsion spring acts on the limiting block to indirectly fix it to the hinge seat, while the second torsion arm acts on the umbrella rib connector, keeping the torsion spring in a torsional state. The torsional force ensures that the umbrella rib assembly is always subjected to a potential driving force to open, effectively preventing the formation of "dead angles" or "jamming" between the umbrella rib assembly and the hinge seat or umbrella disc when fully closed. During the opening action, it assists in pushing the umbrella rib assembly to open quickly, ensuring smooth and effortless umbrella opening.

[0019] 2) To address the issue of frequent rotation at the hinge joint between the umbrella tray and the rib assembly of existing outdoor umbrellas, which can easily cause the hinge pin to come loose and render the umbrella unusable, an anti-loosening mechanism is installed at the connection between the rib connector and the hinge seat. This mechanism utilizes the anti-rotation boss on the pin (i.e., the anti-rotation threaded pin or the anti-reverse bolt) and the anti-rotation groove on the rib connector to maintain a relatively fixed engagement angle with the anti-rotation threaded pin when the rib assembly is in any rotational state. This effectively prevents the relative rotation of the screw and the pin, thus achieving the effect of pin loosening.

[0020] 3) To address the issues of interference between the fabric seams and ribs in existing outdoor umbrellas, resulting in raised ridges on the canopy when the umbrella is open, affecting its appearance, and the fabric becoming loose and easily rubbing against the ribs, canopy, and other components when the umbrella is closed, or even detaching from the ribs, a fabric tensioning device, including a tension spring, is fixedly installed at the inner end of the main umbrella ribs to keep the fabric taut at all times. Furthermore, by creating grooves on the main umbrella ribs and placing beads along the fabric seams that cooperate with the grooves, a storage space for the fabric seams and built-in windproof fixing points are formed, making the umbrella more aesthetically pleasing and sturdy. 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 an exploded view of the anti-dead-angle mechanism of this utility model;

[0024] Figure 3 This is a schematic diagram of the anti-dead-angle mechanism structure of this utility model in the closed umbrella state;

[0025] Figure 4This is a schematic diagram of the anti-loosening mechanism of this utility model. Figure 1 ;

[0026] Figure 5 This is a schematic diagram of the anti-loosening mechanism of this utility model. Figure 2 ;

[0027] Figure 6 The following is a schematic diagram of the umbrella fabric tensioning device of this utility model: (a) is an assembly diagram, (b) is an exploded diagram, and (c) is a cross-sectional view of the main umbrella rib.

[0028] Figure 7 This is a partial structural schematic diagram of the present invention;

[0029] Figure 8 Here are schematic diagrams of the rope winding device of this utility model, (a) is an assembly diagram, and (b) is an exploded diagram;

[0030] In the diagram: 1. Center column; 2. Umbrella disc; 201. Hinge seat; 202. Limiting part; 21. Fixed umbrella disc; 22. Moving umbrella disc; 23. Guide assembly; 231. Guide sleeve; 232. Outer sleeve; 233. Guide sleeve seat; 3. Umbrella rib assembly; 31. Main umbrella rib; 311. Slide groove; 32. Support rib; 4. Umbrella fabric; 41. Sewing thread; 42. Bead; 5. Traction assembly; 51. Fixed pulley; 52. Upper umbrella cord; 53. Moving pulley assembly; 54. Lower umbrella cord; 55. Cord winding device; 551. Outer shell; 552. Cord winding shaft; 553. Cord winding wheel; 554. Ratchet assembly; 555. Bearing; 555. Umbrella rib connector. 6; Anti-dead angle mechanism; 7; Limiting block; 71; Abutting part; 711; Stopping part; 712; Connecting part; 713; Torsion spring; 72; First torsion arm; 721; Second torsion arm; 722; First pin; 73; Anti-loosening mechanism; 8; Anti-rotation threaded pin; 81; First screw; 82; First anti-rotation boss; 83; First anti-rotation groove; 84; Anti-reverse bolt; 85; Nut; 851; Smooth rod; 852; Second anti-rotation boss; 853; Second screw; 86; Second anti-rotation groove; 87; Umbrella fabric tensioning device; 9; First umbrella fabric hook; 91; Tension spring; 92; Second umbrella fabric hook; 93. Detailed Implementation

[0031] 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.

[0032] like Figure 1As shown, this utility model provides an easy-to-open outdoor umbrella, including a center column 1, an umbrella tray 2, an umbrella rib assembly 3, and an umbrella fabric 4. A traction assembly 5 is provided inside the center column 1. A hinge seat 201 is provided around the umbrella tray 2. The umbrella tray 2 includes a fixed umbrella tray 21 and a movable umbrella tray 22. The umbrella rib assembly 3 is connected to the hinge seat 201 via an umbrella rib connector 6. A limiting part 202 protrudes from the side of the hinge seat 2 near the umbrella tray 2, meaning the umbrella tray 2 is a fixed umbrella tray. At 21 o'clock, the limiting part 202 is located on the lower side of the hinge seat 201. When the umbrella disc 2 is a movable umbrella disc 22, the limiting part 202 is located on the upper side of the hinge seat 201. The umbrella rib connector 6 is provided with an anti-dead angle mechanism 7 that cooperates with the limiting part 202. The anti-dead angle mechanism 7 can be provided on the umbrella rib connector 6 that is hinged to both the fixed umbrella disc 31 and the movable umbrella disc 32, or it can be provided only on the umbrella rib connector 6 that is hinged to the movable umbrella disc 32. Figure 2 and Figure 3 The solutions are all explained using this configuration method. Specifically, for example... Figure 2 As shown, the anti-dead-angle mechanism 7 includes a limiting block 71, a torsion spring 72, and a first pin 73. The limiting block 71 includes an abutting part 711 and a connecting part 713. The abutting part 711 abuts against the hinge seat 201 and can rotate along the arc surface of the hinge seat 201. When the umbrella rib assembly 3 is fully closed, the abutting part 711 and the limiting part 202 abut against each other to form a limiting position. The torsion spring 72 is embedded in the connecting part 713, that is, the torsion spring 72 forms several interconnected spring coils on both sides of the connecting part 713. A first torsion arm 721 is formed in the middle of the torsion spring 72, which abuts against the connecting part 713. The first torsion arm 721 connects the spring coils on both sides. Second torsion arms 722 are formed on both sides of the torsion spring 72, which abut against the umbrella rib connector 6. The first pin 73 passes through the torsion spring 72 and the connecting part 713 and is fixed on the umbrella rib connector 6.

[0033] Furthermore, such as Figure 2 As shown, the limiting block 71 also includes a stop portion 712, which is located between the abutting portion 711 and the connecting portion 713, forming a second limit between the limiting block 71 and the hinge seat 201. This is used to prevent the limiting block 71 from rotating too much and disengaging from the hinge seat 201 when the umbrella rib assembly 3 is closed.

[0034] like Figure 2 and Figure 3As shown, the working method of the anti-dead angle mechanism 7 is as follows: the first torsion arm 721 of the torsion spring 72 acts on the limiting block 71 to keep it in contact with the hinge seat 201, and the second torsion arm 722 acts on the umbrella rib connector 6; during the umbrella canopy closing process, the umbrella rib assembly 3 rotates relative to the hinge seat 201, torsion spring 72, and under the action of torsional force, the abutment part 711 of the limiting block 71 rotates along the arc surface of the hinge seat 201, and the umbrella rib assembly 3 is always subject to a potential driving force to push it open; When the canopy is fully closed, the abutting part 711 of the limiting block 71 is fully abutting the limiting part 202. At this time, the torsion spring 72 has the greatest degree of torsion and the generated torsional force is also the greatest (but it is still less than the closing force provided by the traction component 5 and does not affect the closing of the canopy). The rib assembly 3 is just in a position where it is not easy to form a "dead angle" or "jamming" with the hinge seat 201 or the canopy disc 2. When the opening action is performed, the torsional force of the torsion spring 72 assists in pushing the rib assembly 3 to open quickly, so as to achieve smooth and effortless opening of the umbrella.

[0035] Furthermore, an anti-loosening mechanism 8 is provided at the connection between the umbrella rib connector 6 and the hinge seat 201 to prevent them from separating during rotation. The anti-loosening mechanism 8 can be provided at the hinge points of the umbrella rib connector 6 with the fixed umbrella disc 31 and the movable umbrella disc 32. The following description uses the anti-loosening mechanism 8 provided at the hinge point of the umbrella rib connector 6 with the fixed umbrella disc 31 as an example.

[0036] like Figure 4 As shown, the specific structure of the anti-loosening structure can be as follows: it includes an anti-rotation threaded pin 81 and a first screw 82. The anti-rotation threaded pin 81 has a cylindrical structure in the middle for rotatably connecting with the hinge seat 201. The anti-rotation threaded pin 81 has polygonal first anti-rotation bosses 83 on both sides. The shape of the first anti-rotation bosses 83 can be triangular, quadrilateral, etc. The umbrella rib connector 6 has a corresponding first anti-rotation groove 84 that mates with the first anti-rotation bosses 83. The screw passes through the first anti-rotation groove 84 and is screwed onto the anti-rotation threaded pin 81. Through the engagement of the first anti-rotation bosses 83 and the first anti-rotation grooves 84 on the anti-rotation threaded pin 81, the umbrella rib assembly 3 maintains a relatively fixed engagement angle with the anti-rotation threaded pin 81 in any state, thereby preventing relative rotation between the screw and the anti-rotation threaded pin 81 and achieving the anti-loosening effect.

[0037] like Figure 5As shown, the specific structure of the anti-loosening structure can be as follows: it includes a locking bolt 85 and a second screw 86. The locking bolt 85 includes a nut 851 and a smooth rod 852. The nut 851 forms a limiting position with the umbrella rib connector 6. The end of the smooth rod 852 away from the nut 851 is provided with a countersunk hole with internal threads (not shown in the figure). The second screw 86 passes through the umbrella rib connector 6 and is screwed and fixed in the countersunk hole. A second anti-rotation boss 853 is provided at the connection between the nut 851 and the smooth rod 852. Preferably, the second anti-rotation boss 853 is at least one strip-shaped protrusion arranged radially along the nut 851, that is, the second anti-rotation boss 853 can be a straight line (see reference). Figure 5 The structure can be cross-shaped, X-shaped, or other star-shaped, selected according to actual needs; the umbrella rib connector 6 is provided with a second anti-rotation groove 87 that cooperates with the second anti-rotation boss 853. The smooth rod 852 passes through the second anti-rotation groove 87 and the hinge seat 201 and is screwed to the second screw 86. This embodiment uses the cooperation between the first anti-rotation boss 83 on the anti-retraction bolt 85 and the second anti-rotation groove 87 on the umbrella rib connector 6 to maintain the fixed cooperation angle between the two, so as to achieve the purpose of preventing loosening.

[0038] As one of the better implementation methods, such as Figure 6 As shown in (a), the umbrella rib assembly 3 includes a main umbrella rib 31 and a supporting rib 32 that are connected to each other. The inner end of the main umbrella rib 31 near the umbrella disc 2 is provided with an umbrella fabric tensioning device 9, and the outer end is nested with a first umbrella fabric hook 91; Figure 6 As shown in (b), the umbrella fabric tensioning device 9 includes a tension spring 92 and a second umbrella fabric hook 93. One end of the tension spring 92 is fixed to the main umbrella rib 31, and the other end is connected to the second umbrella fabric hook 93. The second umbrella fabric hook 93 is ring-shaped. The umbrella fabric 4 has hanging ears (not shown in the figure) at both ends, which are respectively hung on the first umbrella fabric hook 91 and the second umbrella fabric hook 93. The maximum tension length of the tension spring 92 is greater than the retraction length required for the umbrella fabric 4 to remain taut when the umbrella is closed.

[0039] Preferred, such as Figure 6 (a) Figure 6 As shown in (c), the main umbrella rib 31 is provided with a sliding groove 311, the umbrella fabric tensioning device 9 is embedded in the sliding groove 311, and the umbrella fabric 4 forms a stitch line 41 corresponding to the sliding groove 311 (the umbrella fabric 4 of a conventional outdoor umbrella is made of fabric pieces of the same size and shape sewn together, and the stitching is generally opposite to the umbrella rib for easy fixation). The stitch line 41 is provided with beads 42 at intervals, and the beads 42 are slidably disposed in the sliding groove 311, so that the stitch line 41 of the umbrella fabric 4 is contained in the umbrella rib sliding groove 311, and at the same time forms a windproof fixing point for the umbrella fabric 4.

[0040] The umbrella fabric tensioning device 9 operates as follows: When the umbrella is opened, the umbrella fabric 4 is taut and opens outwards, the tension spring 92 is stretched, and the upper end of the umbrella fabric 4 slides outwards a certain distance. At the same time, the drop bead 42 moves along the slide groove 311, ensuring that the seam of the umbrella fabric 4 is always contained within the slide groove 311. When the umbrella is closed, the umbrella fabric 4 relaxes, the tension spring 92 retracts, and the upper hook moves closer to the umbrella plate 2, ensuring that the umbrella fabric 4 always adheres to the umbrella ribs and maintains a certain tension. This not only makes the appearance more aesthetically pleasing but also prevents the umbrella fabric 4 from rubbing against and being damaged by the umbrella ribs and the fixed umbrella plate 21, and prevents it from falling off the lower hook. Furthermore, it also prevents the umbrella fabric 4 from interfering with the opening operation. It should be understood that, according to the design of existing outdoor umbrellas, a second layer of umbrella fabric is provided above the umbrella fabric 4 to cover the fixed umbrella plate 21. The coverage area of ​​this second layer of umbrella fabric can completely cover the entire length of the umbrella rib assembly 3 exposed due to the tension spring 92.

[0041] As one of the better implementation methods, such as Figure 7 As shown, the traction assembly 5 includes a fixed pulley 51, an upper parachute rope 52, a movable pulley assembly 53, a lower parachute rope 54, and a rope winding device 55. The upper parachute rope 52 passes over the movable pulley assembly 53, and its two ends pass over the fixed pulleys 51 respectively on the fixed parachute disc 21 before being fixed to the movable parachute disc 22. The upper end of the lower parachute rope 54 is fixed to the movable pulley assembly 53, and its lower end is wound around the rope winding device 55. The rope winding device 55 can adopt a conventional structure with a one-way anti-reverse self-locking function; preferably, it can also be as shown in the diagram. Figure 8 As shown, the structure allows for bidirectional umbrella opening and self-locking. Specifically, the rope winding device 55 includes a housing 551, a rope winding shaft 552, a rope winding wheel 553, a ratchet assembly 554 arranged in opposite directions, and a bearing 555. The ratchet assembly 554 is located on the rope winding shaft 552 and is distributed on both sides of the rope winding wheel 553. The rope winding wheel 553 is threadedly connected to the rope winding shaft 552 and moves to the left or right as the rope winding shaft 552 rotates, pressing the ratchet assembly 554 on the corresponding side to enable it to perform the anti-reverse self-locking function.

[0042] The advantage of this implementation is that by using a movable pulley to form two sections of equal-length upper parachute rope 52, the movement stability of the movable parachute disc 22 is improved, the opening resistance is reduced, and the opening of the parachute is more effortless. At the same time, the rope winding device 55, which can open the parachute in both directions and is self-locking, can further reduce the restrictions on the opening operation and improve the convenience of opening the parachute.

[0043] As one of the preferred embodiments, the movable umbrella disc 22 and the central column 1 are connected by a guide assembly 23, as shown in the figure. Figure 7 As shown, the guide assembly 23 includes a guide sleeve 231, an outer sleeve 232, and a guide sleeve seat 233. The guide sleeve 231 is made of a soft, wear-resistant material. One end of the guide sleeve 231 penetrates the inner cavity of the moving umbrella disc 22, and the other end extends upward or downward along the central column 1 and connects to the guide sleeve seat 233. Figure 7 As shown in the downward extension (i.e., the guide component 23 is positioned below the moving umbrella disc 22), the outer sleeve 232 is located outside the guide sleeve 231. In this embodiment, the guide sleeve 231 extends the axial contact area between the moving umbrella disc 22 and the central column 1, and achieves flexible contact, which helps to protect the outer surface of the central column 1 and reduce the moving resistance of the moving umbrella disc 22, thus reducing the difficulty of opening the umbrella.

[0044] 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. An easy-to-open outdoor umbrella, comprising a center column, an umbrella disc, an umbrella rib assembly, and an umbrella fabric, wherein a traction assembly is provided inside the center column, a hinge seat is provided around the umbrella disc, the umbrella disc includes a fixed umbrella disc and a movable umbrella disc, and the umbrella rib assembly is connected to the hinge seat via an umbrella rib connector, characterized in that: The hinge seat has a protruding limiting part on the side near the umbrella disc. The connection between the umbrella rib connector and the hinge seat is provided with an anti-loosening mechanism. The umbrella rib connector has an anti-dead angle mechanism that cooperates with the limiting part. The anti-dead angle mechanism includes a limiting block, a torsion spring and a first pin. The limiting block includes an abutting part and a connecting part. The abutting part abuts against the hinge seat and can rotate along the hinge seat. When the umbrella rib assembly is fully closed, the abutting part abuts against the limiting part. The torsion spring is embedded in the connecting part. The middle of the torsion spring forms a first torsion arm that abuts against the connecting part. The two sides of the torsion spring form second torsion arms that abut against the umbrella rib connector. The first pin passes through the torsion spring and the connecting part and is fixed to the umbrella rib connector.

2. An outdoor umbrella easy to open according to claim 1, characterized in that: The limiting block also includes a stop portion, which is located between the abutment portion and the connecting portion, and is used to prevent the limiting block from rotating too much and disengaging from the hinge seat when the umbrella rib assembly is closed.

3. An outdoor umbrella easy to open according to claim 1, characterized in that: The anti-loosening mechanism includes an anti-rotation threaded pin and a first screw. The anti-rotation threaded pin has a cylindrical structure in the middle for rotatably connecting with the hinge seat. The anti-rotation threaded pin has polygonal first anti-rotation bosses on both sides. The umbrella rib connector has corresponding first anti-rotation grooves that cooperate with the first anti-rotation bosses. The screw passes through the first anti-rotation groove and is screwed onto the anti-rotation threaded pin.

4. An outdoor umbrella easy to open according to claim 1, characterized in that: The anti-loosening mechanism includes a locking bolt and a second screw. The locking bolt includes a nut and a smooth rod. The end of the smooth rod away from the nut is provided with a countersunk hole with internal threads. The second screw is screwed into the countersunk hole. A second anti-rotation boss is provided at the connection between the nut and the smooth rod. The umbrella rib connector is provided with a second anti-rotation groove that cooperates with the second anti-rotation boss. The smooth rod passes through the second anti-rotation groove and the hinge seat and is screwed into the second screw.

5. An outdoor umbrella easy to open according to claim 4, characterized in that: The second anti-rotation boss is at least one strip-shaped protrusion arranged radially along the nut.

6. An outdoor umbrella easy to open according to claim 1, characterized in that: The umbrella rib assembly includes a main umbrella rib and a supporting rib that are connected to each other. The inner end of the main umbrella rib is provided with an umbrella fabric tensioning device, and the outer end is provided with a first umbrella fabric hook. The umbrella fabric tensioning device includes a tension spring and a second umbrella fabric hook. One end of the tension spring is fixed to the main umbrella rib, and the other end is connected to the second umbrella fabric hook. The second umbrella fabric hook is ring-shaped, and both ends of the umbrella fabric are respectively hung on the first umbrella fabric hook and the second umbrella fabric hook.

7. An outdoor umbrella easy to open according to claim 6, characterized in that: The main umbrella ribs are provided with a sliding groove, the umbrella fabric tensioning device is embedded in the sliding groove, the umbrella fabric forms a stitch line corresponding to the sliding groove, and the stitch line is provided with beads at intervals, the beads being slidably disposed in the sliding groove.

8. An outdoor umbrella easy to open according to claim 1, characterized in that: The traction assembly includes an upper parachute rope, a lower parachute rope, a fixed pulley, a movable pulley assembly, and a rope winding device. After the upper parachute rope passes over the movable pulley assembly, both ends pass over the fixed pulleys on the fixed parachute disc and are then fixed to the movable parachute disc. The upper end of the lower parachute rope is fixed to the movable pulley assembly, and the lower end is wound around the rope winding device.

9. An easy-to-open outdoor umbrella according to claim 8, characterized in that: The rope winding device includes a housing, a rope winding shaft, a rope winding wheel, a ratchet assembly arranged in opposite directions, and a bearing. The ratchet assembly is located on the rope winding shaft and is distributed on both sides of the rope winding wheel. The rope winding wheel is threadedly connected to the rope winding shaft.

10. An outdoor umbrella easy to open according to claim 1, characterized in that: The movable umbrella disc and the central column are connected by a guide assembly. The guide assembly includes a guide sleeve, an outer sleeve, and a guide sleeve seat. The guide sleeve is made of a soft and wear-resistant material. One end of the guide sleeve passes through the inner cavity of the movable umbrella disc, and the other end extends upward or downward along the central column and connects to the guide sleeve seat. The outer sleeve is located outside the guide sleeve.

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