A rotary opening and closing sunshade

Abstract

The present application relates to sunshade technical field, specifically refers to a rotating open and close type sunshade, including stand, ribs and umbrella cloth, the upper end of the stand is equipped with unfolding device, unfolding device is rotatably connected with the stand, is equipped with a plurality of ribs on the unfolding device, a plurality of ribs are all connected with umbrella cloth, umbrella cloth is connected with two adjacent ribs and makes a plurality of ribs and a plurality of umbrella cloth be sequentially connected to form the canopy of sunshade, drive device is equipped on the stand, drive device is transmission connection with the unfolding device to make the canopy unfold or contract, the present application is reasonable in structure, unfolding device can be driven by manual rocker, a plurality of rotating arms are rotatably arranged on the mandrel, the mandrel drives one rotating arm and rib to rotate, the ribs on a plurality of rotating arms are connected by umbrella cloth to sequentially open and form the canopy, there is an included angle C between the unfolding device and the stand, when contracting, the rotating arm is attached to the stand to reduce the floor area of sunshade, and it is flexible and convenient to use.

Description

Technical Field

[0001] This invention relates to the field of sunshade technology, specifically to a rotating opening and closing sunshade. Background Technology

[0002] Sun umbrellas are everyday items used for sun protection, commonly found in courtyards, public places, and other rest areas. As people's living standards continue to improve, the use of sun umbrellas is becoming increasingly widespread, providing people with a more comfortable leisure environment.

[0003] Currently, there are many styles of parasols on the market. Common parasols can be categorized by structure into center-pole umbrellas, hanging umbrellas, and curved-arm umbrellas. Center-pole umbrellas are only suitable for use when placed in the center of a table, with the user resting around it. However, the uprights of the center-pole umbrella can obstruct the user's view, affecting the user experience, and their application environments are relatively limited. Hanging umbrellas and curved-arm umbrellas are suitable for courtyards and public places with suspended ceilings. These types of parasols not only take up a lot of space but also have a more complex structure, resulting in higher material and production costs. Therefore, existing technologies still need improvement and development. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a rotating and opening sunshade umbrella that features a reasonable structure, single-sided sunshade, flexible opening and closing, and convenient storage.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: The present invention discloses a rotating opening and closing sunshade umbrella, comprising a column, umbrella ribs, and umbrella fabric. The upper end of the column is provided with an unfolding device, which is rotatably connected to the column. The unfolding device is provided with a plurality of umbrella ribs, and each of the plurality of umbrella ribs is connected with an umbrella fabric. The umbrella fabric is connected to two adjacent umbrella ribs, so that the plurality of umbrella ribs and the plurality of umbrella fabrics are sequentially connected to form the umbrella surface of the sunshade umbrella. The column is provided with a driving device, which is connected to the unfolding device to drive the umbrella surface to unfold or close.

[0006] According to the above scheme, the upper end of the column is provided with a reversing mechanism, and the lower end of the unfolding device is connected to the reversing mechanism, thereby forming an angle C between the unfolding device and the column. The driving device is connected to the unfolding device through the reversing mechanism.

[0007] According to the above scheme, the unfolding device includes several rotating arms, which are sequentially arranged on the same central axis, and the central axis forms an angle C with the column. One end of several umbrella ribs is fixedly connected to the corresponding rotating arm. The rotating arm at the bottom of the unfolding device is rotatably connected to the reversing mechanism, and a limiting structure is provided between the rotating arm and the reversing mechanism. The rotating arm at the top of the unfolding device is drively connected to the reversing mechanism, so that the driving device can unfold or close the umbrella surface through the several rotating arms.

[0008] According to the above scheme, the reversing mechanism is provided with a spindle, the lower end of which is rotatably connected to the reversing mechanism through a bearing. The spindle passes through several rotating arms along the central axis. The spindle is provided with several bushings that correspond one-to-one with the rotating arms. The uppermost rotating arm in the unfolding device is fixedly connected to the spindle through the bushing. The bushings paired with the other rotating arms are provided with bearings, and the other rotating arms are rotatably connected to the spindle through the bushing.

[0009] According to the above scheme, the reversing mechanism includes a first bending tube and a second bending tube. The lower end of the first bending tube is fixed to the upper end of the second bending tube, and the first bending tube and the second bending tube form an included angle C. A mandrel is provided on the first bending tube, and the lower end of the mandrel is rotatably inserted into the first bending tube through a bearing. The upper end of the mandrel is connected to the unfolding device. A transmission rod is provided inside the column. The lower end of the second bending tube is fixedly connected to the upper end of the column, and the upper end of the transmission rod is inserted into the second bending tube. The transmission rod is connected to the second bending tube and the column through bearings. The upper end of the transmission rod is connected to the lower end of the mandrel, and the driving device is connected to the lower end of the transmission rod.

[0010] According to the above scheme, the lower end of the spindle and the upper end of the transmission rod are connected by two bevel gears to form a transmission connection.

[0011] According to the above scheme, the lower end of the spindle and the upper end of the transmission rod are connected by a universal joint.

[0012] According to the above scheme, a limiting device is provided between the rotating arm at the lowest end of the unfolding device and the first bending tube. The limiting structure includes an extension plate and a blocking block. A blocking block is provided on the inner wall of the upper port of the first bending tube. An extension plate is provided on the lower port of the bushing near the first bending tube. The extension plate passes through the upper port of the first bending tube. When the rotating arm on the bushing rotates around the spindle, the extension plate and the blocking block are paired in the circumferential direction of the central axis.

[0013] According to the above scheme, the driving device includes a manual crank and a speed change device. The speed change device is fixedly installed in the middle of the column and is connected to the lower end of the transmission rod. The manual crank is provided on the speed change device.

[0014] The beneficial effects of this invention are as follows: The invention has a reasonable structure. The unfolding device can be driven by a manual crank. Several rotating arms are rotatably set on a spindle. The spindle drives one of the rotating arms and the umbrella ribs to rotate. The umbrella ribs on the rotating arms are connected by the umbrella cloth, so they open in sequence to form the umbrella surface. Conversely, the umbrella surface is closed. There is an angle C between the unfolding device and the column. When the umbrella is closed, the rotating arm is close to the column, thereby reducing the footprint of the sun umbrella. It is flexible and convenient to use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram showing the disassembled structure of the main body of the umbrella-less fabric of the present invention; Figure 2 This is an exploded structural diagram of the reversing mechanism in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 4 yes Figure 3 Enlarged structural diagram of section A in the middle; Figure 5 This is a schematic diagram of the overall structure of the present invention in its folded state; Figure 6 This is a schematic diagram of the overall structure of the present invention in its unfolded state; Figure 7 This is an exploded structural diagram of the reversing mechanism in Embodiment 2 of the present invention.

[0016] In the picture: 1. Column; 2. Deployment device; 3. Directional mechanism; 11. Umbrella ribs; 12. Umbrella fabric; 13. Transmission rod; 14. Manual crank; 15. Speed ​​change device; 21. Rotating arm; 22. Extension plate; 31. Spindle; 32. Bushing; 33. First bending tube; 34. Second bending tube; 35. Block; 36. Bevel gear; 37. Universal joint. Detailed Implementation

[0017] The technical solution of the present invention will be described below with reference to the accompanying drawings and embodiments.

[0018] Example 1 like Figure 1-6As shown, the present invention provides a rotating opening and closing sunshade, comprising a column 1, umbrella ribs 11, and umbrella fabric 12. The upper end of the column 1 is provided with an unfolding device 2, which is rotatably connected to the column 1. The unfolding device 2 is provided with a plurality of umbrella ribs 11, and each of the plurality of umbrella ribs 11 is connected with an umbrella fabric 12. The umbrella fabric 12 is connected to two adjacent umbrella ribs 11, thereby connecting the plurality of umbrella ribs 11 and the plurality of umbrella fabrics 12 in series to form the umbrella surface of the sunshade. The column 1 is provided with a driving device, which is connected to the unfolding device 2 to drive the umbrella surface to unfold or close. The umbrella canopy is formed by connecting several umbrella ribs 11 to several umbrella fabrics 12. Since one end of each umbrella rib 11 is connected to the unfolding device 2, when the unfolding device 2 opens the umbrella canopy, the umbrella canopy can be a non-circular structure when the unfolding angle or rotation angle of the unfolding device 2 is less than 360°. Alternatively, through multiple umbrella ribs 11 and umbrella fabrics 12, the unfolding angle or rotation angle of the unfolding device 2 can be equal to 360°, thereby forming a circular structure by having several umbrella fabrics 12 surround the upright 1. Preferably, the unfolding angle or rotation angle of the unfolding device 2 is close to 180°. Under the drive of the unfolding device 2, several umbrella ribs 11 and the umbrella fabrics 12 on them can form a semi-circular umbrella canopy, thereby avoiding the problem of existing center-post umbrellas requiring the center post to be placed in the center of the table. It is understood that the lower end of the upright 1 is provided with a fixed structure, such as a base, a base plate, and conventional connection methods, so that the upright 1 and the unfolding device 2, umbrella ribs 11, and umbrella canopy 12 on it are stably placed on the ground, thereby providing the user with a sunshade umbrella canopy.

[0019] The upper end of the column 1 is equipped with a reversing mechanism 3, and the lower end of the unfolding device 2 is connected to the reversing mechanism 3, thereby forming an angle C between the unfolding device 2 and the column 1. The driving device is connected to the unfolding device 2 through the reversing mechanism 3. The reversing mechanism 3 is used to tilt the unfolding device 2 onto the upper end of the column 1. The angle C formed between the unfolding device 2 and the column 1 allows the umbrella ribs 11 surrounding the unfolding device 2 to hang down on the unfolding device 2 in the closed state, and the umbrella ribs 11 can be approximately parallel to the column 1, which helps to reduce the space occupied by the sun umbrella when it is stored and transported. Of course, the value of the angle C is between 45° and 75°, and there is also an angle between the umbrella ribs 11 and the rotation axis of the unfolding device 2, so that in the above-mentioned closed state, the umbrella ribs 11 hang down on the unfolding device 2.

[0020] The unfolding device 2 includes several rotating arms 21, which are sequentially arranged on the same central axis, forming an angle C with the column 1. One end of several umbrella ribs 11 is fixedly connected to the corresponding rotating arm 21. The lowermost rotating arm 21 in the unfolding device 2 is rotatably connected to the reversing mechanism 3, and a limiting structure is provided between the rotating arm 21 and the reversing mechanism 3. The uppermost rotating arm 21 in the unfolding device 2 is drively connected to the reversing mechanism 3, thereby enabling the drive device to unfold or close the umbrella canopy through the several rotating arms 21. The rotating arms 21 can rotate around the central axis of the unfolding device 2. The uppermost rotating arm 21 in the unfolding device 2 is driven by the reversing mechanism 3. The umbrella ribs 11 on the rotating arm 21 rotate around the central axis and sequentially drive the other umbrella ribs 11 and the rotating arm 21 through the umbrella fabric 12, thereby causing the several umbrella ribs 11 and the umbrella fabric 12 to unfold sequentially and form the umbrella canopy. When the umbrella is fully unfolded, the lowermost rotating arm 21 in the unfolding device 2 is connected to the reversing mechanism 3 through a limiting structure, thereby stopping its rotation. Preferably, the rotating arms 21 on the unfolding mechanism 2 are linked sequentially by the umbrella fabric 12. Conversely, by reversing the rotation of the uppermost rotating arm 21, the other rotating arms 21 can be driven, causing the umbrella ribs 11 to hang down on the unfolding device 2.

[0021] The reversing mechanism 3 is equipped with a spindle 31. The lower end of the spindle 31 is rotatably connected to the reversing mechanism 3 via a bearing. The spindle 31 passes through several rotating arms 21 along the central axis. The spindle 31 is equipped with several bushings 32 that correspond one-to-one with the rotating arms 21. The uppermost rotating arm 21 in the unfolding device 2 is fixedly connected to the spindle 31 via the bushings 32. The bushings 32 paired with the other rotating arms 21 are equipped with bearings, and the other rotating arms 21 are rotatably connected to the spindle 31 via the bushings 32. The bushings 32 are mounted on the spindle 31 via bearings, and the bushings 32 cooperate with the rotating arms 21 to limit their axial movement, allowing the rotating arms 21 to rotate relative to each other around the central axis. Furthermore, the uppermost rotating arm 21 in the unfolding device 2 is fixedly connected to the spindle 31 via the bushing 32. When the drive device drives the spindle 31 to rotate via the reversing mechanism 3, the spindle 31 drives the uppermost rotating arm 21 to rotate, thereby sequentially driving several rotating arms 21 and the umbrella ribs 11 and umbrella surface 12 on them to unfold and form the umbrella surface.

[0022] The reversing mechanism 3 includes a first bending tube 33 and a second bending tube 34. The lower end of the first bending tube 33 is fixed to the upper end of the second bending tube 34, and the first bending tube 33 and the second bending tube 34 form an included angle C. A mandrel 31 is provided on the first bending tube 33. The lower end of the mandrel 31 is rotatably inserted into the first bending tube 33 through a bearing. The upper end of the mandrel 31 is connected to the unfolding device 2. A transmission rod 13 is provided inside the column 1. The lower end of the second bending tube 34 is fixedly connected to the upper end of the column 1. The upper end of the transmission rod 13 is inserted into the second bending tube 34, and the transmission rod 13 is connected to the second bending tube 34 and the column 1 through bearings. The upper end of the transmission rod 13 is connected to the lower end of the mandrel 31, and the driving device is connected to the lower end of the transmission rod 13. Because there is an included angle C between the unfolding device 2 and the column 1, the drive device needs to achieve a transmission connection through the reversing structure 3. The first bent tube 33 and the second bent tube 34 are respectively connected to the unfolding device 2 and the column 1. The first bent tube 33 is rotatably connected to the unfolding device 2 through the mandrel 31, and the mandrel 31 is fixedly connected to the uppermost rotating arm 21 to achieve rigid transmission. It can be understood that, in order to prevent the plurality of rotating arms 21 from detaching from the upper end of the mandrel 31, the upper end of the mandrel 31 is provided with a cover plate to assemble and fix the unfolding device 2 thereon.

[0023] The lower end of the spindle 31 and the upper end of the transmission rod 13 are connected by two bevel gears 36. The main purpose of the reversing mechanism 3 is to form an angle C between the unfolding device 2 and the column 1. Similarly, there is an angle C between the spindle 31 and the transmission rod 13. The spindle 31 is rotatably mounted in the first bending tube 33 through a bearing, while the transmission rod 13 is rotatably mounted in the column 1 through a bearing. Power is transmitted between the transmission rod 13 and the spindle 31 through the meshing of two bevel gears 36. Thus, the driving device can drive the unfolding device 2 to open or close the umbrella canopy.

[0024] A limiting device is provided between the lowermost rotating arm 21 and the first bending tube 33 in the unfolding device 2. The limiting structure includes an extension plate 22 and a blocking block 35. The blocking block 35 is provided on the inner wall of the upper port of the first bending tube 33, and the extension plate 22 is provided on the lower port of the bushing 32 near the first bending tube 33. The extension plate 22 passes through the upper port of the first bending tube 33, and when the rotating arm 21 on the bushing 32 rotates around the spindle 31, the extension plate 22 and the blocking block 35 are paired in the circumferential direction of the central axis. The limiting device is used to limit the stroke angle of the lowermost rotating arm 21 on the spindle 31. When the uppermost rotating arm 21 rotates more than 180°, the umbrella cloth 12 on it is fully opened, and the other umbrella ribs 11 and umbrella cloth 12 are also driven to unfold to form the umbrella surface. At this time, the extension plate 22 and the blocking block 35 abut against each other to prevent the lowermost rotating arm 21 from continuing to rotate, so that the unfolding device 2 opens up several umbrella ribs 11 and umbrella cloth respectively and forms a stable sunshade umbrella surface on the column 1.

[0025] The driving device includes a manual crank 14 and a speed change device 15. The speed change device 15 is fixedly mounted in the middle of the column 1 and is connected to the lower end of the transmission rod 13. The manual crank 14 is mounted on the speed change device 15. Preferably, the present invention uses the manual crank 14 and the speed change device 15 to drive the transmission rod 13 and the unfolding device 2. Of course, it is understood that the driving device can also be electric, i.e., by using a motor on the speed change device 15 as a power source. In this case, the aforementioned limiting device should be equipped with a stroke control sensor to shut off the motor when the umbrella is fully unfolded.

[0026] Example 2 like Figure 7 As shown, the difference between this embodiment and embodiment 1 is only that the lower end of the spindle 31 and the upper end of the transmission rod 13 are connected by a universal joint 37. The main purpose of the reversing mechanism 3 is to form an angle C between the unfolding device 2 and the column 1. Similarly, there is an angle C between the spindle 31 and the transmission rod 13. The spindle 31 is rotatably mounted in the first bending tube 33 by bearings, and the transmission rod 13 is rotatably mounted in the column 1 by bearings. The spindle 31 and the transmission rod 13 are connected by the universal joint 37, so that power transmission is realized between the transmission rod 13 and the spindle 31. Thus, the driving device can drive the unfolding device 2 to open or close the umbrella canopy.

[0027] The above description is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included in the scope of this patent application.

Claims

1. A rotating opening and closing sunshade, comprising a support (1), umbrella ribs (11), and umbrella fabric (12), characterized in that: The upper end of the column (1) is provided with an unfolding device (2), which is rotatably connected to the column (1). The unfolding device (2) is provided with several umbrella ribs (11), and each of the umbrella ribs (11) is connected with an umbrella cloth (12). The umbrella cloth (12) is connected to two adjacent umbrella ribs (11), so that the umbrella ribs (11) and the umbrella cloth (12) are connected in series to form the canopy of the sunshade. The column (1) is provided with a driving device, which is connected to the unfolding device (2) to enable the canopy to unfold or close. The upper end of the column (1) is provided with a reversing mechanism (3), and the lower end of the unfolding device (2) is connected to the reversing mechanism (3) so that the unfolding device (2) and the column (1) form an angle C. The driving device is connected to the unfolding device (2) through the reversing mechanism (3). The unfolding device (2) includes several rotating arms (21), which are arranged sequentially on the same central axis, and the central axis forms an angle C with the column (1). One end of several umbrella ribs (11) is fixedly connected to the corresponding rotating arm (21). The rotating arm (21) at the bottom of the unfolding device (2) is rotatably connected to the reversing mechanism (3), and a limiting structure is provided between the rotating arm (21) and the reversing mechanism (3). The rotating arm (21) at the top of the unfolding device (2) is connected to the reversing mechanism (3) through a transmission, so that the driving device can unfold or close the umbrella surface through several rotating arms (21). The reversing mechanism (3) is provided with a spindle (31). The lower end of the spindle (31) is rotatably connected to the reversing mechanism (3) through a bearing. The spindle (31) passes through a number of rotating arms (21) along the central axis. The spindle (31) is provided with a number of bushings (32) that correspond one-to-one with the rotating arms (21). The uppermost rotating arm (21) in the unfolding device (2) is fixedly connected to the spindle (31) through the bushing (32). The bushings (32) that are paired with the other rotating arms (21) are provided with bearings, and the other rotating arms (21) are rotatably connected to the spindle (31) through the bushings (32).

2. The rotating opening and closing sunshade according to claim 1, characterized in that: The reversing mechanism (3) includes a first bending tube (33) and a second bending tube (34). The lower end of the first bending tube (33) is fixed to the upper end of the second bending tube (34), and an angle C is formed between the first bending tube (33) and the second bending tube (34). A mandrel (31) is provided on the first bending tube (33). The lower end of the mandrel (31) is rotatably inserted into the first bending tube (33) through a bearing. The upper end of the mandrel (31) is connected to the unfolding device ( 2) Connecting: The column (1) is provided with a transmission rod (13), the lower end of the second bent tube (34) is fixedly connected to the upper end of the column (1), the upper end of the transmission rod (13) passes through the second bent tube (34), and the transmission rod (13) is connected to the second bent tube (34) and the column (1) respectively through bearings; the upper end of the transmission rod (13) is connected to the lower end of the spindle (31), and the driving device is connected to the lower end of the transmission rod (13).

3. The rotating opening and closing sunshade according to claim 1, characterized in that: The lower end of the spindle (31) and the upper end of the transmission rod (13) are connected by two bevel gears (36).

4. The rotating opening and closing sunshade according to claim 1, characterized in that: The lower end of the spindle (31) and the upper end of the transmission rod (13) are connected by a universal joint (37).

5. The rotating opening and closing sunshade according to claim 1, characterized in that: A limiting device is provided between the rotating arm (21) at the lowest end of the unfolding device (2) and the first bending tube (33). The limiting structure includes an extension plate (22) and a blocking block (35). The blocking block (35) is provided on the inner wall of the upper port of the first bending tube (33). The extension plate (22) is provided on the lower port of the bushing (32) near the first bending tube (33). The extension plate (22) passes through the upper port of the first bending tube (33). When the rotating arm (21) on the bushing (32) rotates around the spindle (31), the extension plate (22) and the blocking block (35) are paired in the circumferential direction of the central axis.

6. The rotating opening and closing sunshade according to claim 1, characterized in that: The drive device includes a manual crank (14) and a speed change device (15). The speed change device (15) is fixedly installed in the middle of the column (1). The speed change device (15) is connected to the lower end of the transmission rod (13). The manual crank (14) is provided on the speed change device (15).

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