Opening and closing structure of flat-top umbrella

Abstract

The opening and closing structure comprises a supporting rod, an umbrella cover and umbrella ribs, a driving device is arranged on the supporting rod, a supporting cross rod is connected to the supporting rod, a center disc is arranged at the outer end of the supporting cross rod, and the center disc is connected with the umbrella cover. The umbrella ribs comprise main umbrella ribs arranged at the two ends of the umbrella cover and auxiliary umbrella ribs uniformly arranged on the umbrella cover, the main umbrella ribs are in running fit with the central disc, and the driving device is connected with and drives the main umbrella ribs to enable the umbrella cover to be in an umbrella opening state or an umbrella closing state. The fan-shaped umbrella has the advantages of being simple and reasonable in structure, convenient to operate and low in manufacturing cost, the main umbrella ribs at the two ends of the umbrella cover are driven by the driving device to rotate, the umbrella cover is driven by the main umbrella ribs to do fan-shaped motion, and therefore the flat-top umbrella is opened or closed.

Description

Technical Field

[0001] This utility model relates to the field of outdoor products technology, specifically to an opening and closing structure for a flat-top umbrella. Background Technology

[0002] Outdoor sun umbrellas are widely used in various outdoor scenarios. They not only provide shade but also protection from wind and rain. An outdoor sun umbrella mainly consists of a frame and a canopy. There are two main types: one type has a structure similar to a regular umbrella, with the support pole located in the center; the other type has the support pole on one side, creating a more spacious area under the umbrella.

[0003] For example, patent application CN202420516306.1, entitled "An Opening Structure for an Outdoor Umbrella," discloses an opening structure for an outdoor umbrella. The umbrella includes a pillar, a handle shell slidably connected to the pillar, a diagonal rod hinged at one end to the handle shell, an upper umbrella plate, and a lower umbrella plate below the upper umbrella plate. The upper and lower umbrella plates are connected by a telescopic rod. A connecting seat is fixedly mounted on the middle of the diagonal rod, and a lower connecting rod is hinged to the connecting seat. One end of the lower connecting rod is hinged to the lower umbrella plate. A needle roller bearing (first type) abuts against the outer wall of the lower connecting rod is mounted on the connecting seat. A mounting seat is hinged to the upper umbrella plate, and the upper end of the diagonal rod is inserted into the mounting seat. A needle roller bearing (second type) abuts against the outer wall of the upper umbrella plate is mounted on the mounting seat. However, the umbrella's frame structure is complex, resulting in significant stress on the opening structure. To meet the requirements for strength and opening / closing force, the material requirements are high, leading to high manufacturing costs. Therefore, its structure needs further improvement. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned deficiencies and to disclose to the public a flat-top umbrella opening and closing structure that is reasonable in structure, easy to operate, and low in manufacturing cost.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A flat-top umbrella opening and closing structure includes a support rod, an umbrella canopy, and umbrella ribs. A drive device is provided on the support rod, and a support crossbar is connected to the support rod. A central disc is provided at the outer end of the support crossbar. The umbrella ribs include main umbrella ribs located at both ends of the umbrella canopy and secondary umbrella ribs evenly distributed on the umbrella canopy. The main umbrella ribs are rotatably engaged with the central disc. The drive device is connected to drive the main umbrella ribs to make the umbrella canopy open or closed.

[0007] Further optimization measures for this technical solution are as follows:

[0008] As an improvement, a transmission gear is provided on the main umbrella rib, and a drive gear is mounted on the central disk. The drive gear enables the two transmission gears to rotate synchronously in opposite directions through a transition gear, and the drive device is connected to the drive gear for transmission.

[0009] As an improvement, the driving device is a rocker arm, which is connected to a first transmission chain. The first transmission chain is connected to a second transmission chain via a conversion block, and the second transmission chain is connected to a transmission drive gear.

[0010] As an improvement, the driving device is a rocker arm, which is connected to a first transmission chain, which in turn drives a second transmission chain, and the second transmission chain is connected to a transmission drive gear via a conversion block.

[0011] As an improvement, the conversion block is equipped with a meshing first bevel gear and a second bevel gear. Using bevel gears to achieve the change in force direction results in a simple structure.

[0012] As an improvement, the main ribs at both ends of the umbrella canopy are magnetically secured together when the umbrella is open. This magnetic securing method is simple in structure and easy to manufacture.

[0013] As an improvement, the main ribs at both ends of the canopy are fixed with clips when the canopy is open.

[0014] As an improvement, a light is provided on the central disk.

[0015] As an improvement, a diagonal tie rod is provided between the support rod and the support crossbar. The diagonal tie rod can improve the connection strength between the support rod and the support crossbar.

[0016] The advantages of this utility model compared with the prior art are:

[0017] This utility model discloses an opening and closing structure for a flat-top umbrella. The structure is simple, reasonable, and easy to operate. It drives the rotation of the main ribs at both ends of the umbrella canopy through a driving device. The main ribs drive the umbrella canopy to make a fan-shaped movement, thereby realizing the opening or closing of the flat-top umbrella. The ribs are set in the same plane. The main ribs drive the movement of the umbrella canopy, while the secondary ribs support the umbrella canopy. The rib structure is simple, the manufacturing cost is low, the movement process is completed in the same plane, and the opening and closing of the umbrella occupies little space. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the umbrella in the closed state according to Embodiment 1 of this utility model;

[0019] Figure 2 yes Figure 1 3D structural diagram after removing some of the outer shell components;

[0020] Figure 3 yes Figure 2 Enlarged view of section A in the middle;

[0021] Figure 4 yes Figure 2 Enlarged view of section B;

[0022] Figure 5 yes Figure 1 A three-dimensional structural diagram from another perspective after removing some of the outer shell components;

[0023] Figure 6 yes Figure 5 Enlarged view of section C;

[0024] Figure 7 yes Figure 2 Schematic diagram of the intermediate conversion block;

[0025] Figure 8 This is a three-dimensional structural diagram of the umbrella in the open state according to Embodiment 1 of this utility model;

[0026] Figure 9 This is a three-dimensional structural diagram of the umbrella in the closed state according to Embodiment 2 of this utility model;

[0027] Figure 10 yes Figure 9 Enlarged view of section D in the middle;

[0028] Figure 11 This is a schematic diagram of the transmission structure of the second transmission chain and the drive gear in Embodiment 2 of this utility model.

[0029] The names of the reference numerals in the accompanying drawings of this utility model are:

[0030] Support rod 1, support crossbar 11, center plate 12, diagonal tie rod 13, umbrella canopy 2, main umbrella rib 31, secondary umbrella rib 32, transmission gear 41, drive gear 42, transition gear 43, crank handle 5, first transmission chain 51, second transmission chain 52, conversion block 6, first bevel gear 61, second bevel gear 62, lighting lamp 7. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings:

[0032] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0033] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0034] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0035] like Figures 1 to 8 As shown, a flat-top umbrella opening and closing structure includes a support rod 1, an umbrella canopy 2, and umbrella ribs. A driving device is provided on the support rod 1, and a support crossbar 11 is connected to the support rod 1. A central disc 12 is provided at the outer end of the support crossbar 11. The umbrella ribs include main umbrella ribs 31 located at both ends of the umbrella canopy 2 and secondary umbrella ribs 32 evenly distributed on the umbrella canopy 2. The main umbrella ribs 31 are rotatably engaged with the central disc 12. The driving device is connected to drive the main umbrella ribs 31 to make the umbrella canopy 2 open or closed.

[0036] The main umbrella rib 31 is provided with a transmission gear 41, and the center disk 12 is equipped with a drive gear 42. The drive gear 42 causes the two transmission gears 41 to rotate synchronously in opposite directions through the transition gear 43. The drive device is connected to the drive gear 42 for transmission.

[0037] In order to achieve synchronous and opposite rotation of the two transmission gears 41, a transition gear 43 is provided between the drive gear 42 and one transmission gear 41, and two transition gears 43 are provided between the drive gear 42 and the other transmission gear 41.

[0038] In this embodiment, a manual structure is adopted. The driving device is a crank 5, which is connected to a first transmission chain 51. The first transmission chain 51 is connected to a second transmission chain 52 via a conversion block 6. The second transmission chain 52 is connected to a transmission drive gear 42. Here, the first transmission chain 51 is arranged along the direction of the support rod 1, while the second transmission chain 52 is arranged along the direction of the support crossbar 11. Therefore, a conversion block 6 is needed between the first transmission chain 51 and the second transmission chain 52 to change the direction of the force.

[0039] As an extension, a motor can be used to replace the crank handle 5 to realize the electric opening and closing of the flat-top umbrella.

[0040] The conversion block 6 is provided with a first bevel gear 61 and a second bevel gear 62 that mesh with each other. The first transmission chain 51 is connected to the first bevel gear 61, and the second bevel gear 62 is connected to the second transmission chain 52.

[0041] A sprocket is coaxially mounted on the crank handle 5, the first bevel gear 61, the second bevel gear 62, and the drive gear 42. The first transmission chain 51 and the second transmission chain 52 are engaged with the corresponding sprockets.

[0042] In this embodiment, magnets are fixed on the main umbrella ribs 31, and the main umbrella ribs 31 at both ends of the umbrella surface 2 are magnetically attracted and fixed together when the umbrella is open. When the umbrella is opened, when the main umbrella ribs 31 rotate to the close position, they are automatically magnetically attracted and fixed together under the action of magnetic force. When the umbrella is closed, the main umbrella ribs 31 can be separated by overcoming the magnetic force.

[0043] As an extension, the main umbrella ribs 31 at both ends of the umbrella canopy 2 can also be secured with clips when the umbrella is open. When the umbrella canopy 2 is fully open, the operator can use the clips to secure the main umbrella ribs 31 at both ends together. When it is time to close the umbrella, the clips should be removed first before closing the umbrella.

[0044] The design of the fixing structure of the main umbrella rib 31 in the open state can ensure the stability of the open state.

[0045] The central disk 12 is equipped with a lighting lamp 7, which can provide illumination at night.

[0046] A tie rod 13 is provided between the support rod 1 and the support crossbar 11. The tie rod 13 can improve the connection strength between the support rod and the support crossbar.

[0047] Working principle:

[0048] When the umbrella is opened, the crank handle 5 is turned, which drives the first bevel gear 61 in the conversion block 6 to rotate through the first transmission chain 51. The first bevel gear 61 drives the second bevel gear 62, which drives the drive gear 42 to rotate through the second transmission chain 52. The drive gear 42 then drives the two transmission gears 41 to rotate synchronously in opposite directions through the transition gear 43. This causes the main umbrella ribs 31 to rotate away from the support rod 1. As the main umbrella ribs 31 rotate, the umbrella surface 2 moves in a fan shape until the two main umbrella ribs 31 rotate to the end away from the main umbrella ribs 31. The main umbrella ribs 31 are then magnetically fixed together, and the umbrella surface 2 is opened.

[0049] Conversely, when closing the umbrella, the crank handle 5 is turned. The crank handle 5 drives the drive gear 42 to rotate in the opposite direction through the first transmission chain 51, the conversion block 6, and the second transmission chain 52. The drive gear 42 then drives the two transmission gears 41 to rotate through the transition gear 43, causing the main umbrella ribs 31 to overcome the magnetic force and separate, and rotate towards the support rod 1. As the main umbrella ribs 31 rotate, the umbrella canopy 2 closes until the two main umbrella ribs 31 rotate to one end close to the main umbrella ribs 31, thus completing the closing of the umbrella.

[0050] The main ribs 31 at both ends of the umbrella canopy 2 are driven to rotate by the driving device. The main ribs 31 drive the umbrella canopy 2 to make a fan-shaped movement, thereby realizing the opening or closing of the flat-top umbrella. The ribs are set in the same plane. The main ribs 31 drive the movement of the umbrella canopy 2, while the secondary ribs 32 play the role of supporting the umbrella canopy 2. The rib structure is simple, the manufacturing cost is low, the movement process is completed in the same plane, and the opening and closing of the umbrella occupies little space.

[0051] Figures 9 to 11 In Embodiment Two, the opening and closing structure is similar to that in Embodiment One. The difference is that in this embodiment, the force-direction changing block 6 is positioned at the umbrella surface. Specifically, the driving device is a crank 5, which is connected to a first transmission chain 51. The first transmission chain 51 drives a second transmission chain 52, which is connected to a drive gear 42 via the changing block 6. The second transmission chain 52 drives a first bevel gear 61 within the changing block 6. The first bevel gear 61 meshes with the second bevel gear 62, and the drive gear 42 is coaxially connected to the second bevel gear 62.

[0052] Similarly, the first transmission chain 51 is arranged along the direction of the support rod 1, while the second transmission chain 52 is arranged along the direction of the support crossbar 11. The first transmission chain 51 and the second transmission chain 52 are driven by a sprocket shaft (two sprockets are arranged on the same shaft).

[0053] When the umbrella is opened, the crank handle 5 is turned, and the crank handle 5 drives the second transmission chain 52 through the first transmission chain 51. The second transmission chain 52 drives the first bevel gear 61 in the conversion block 6. The first bevel gear 61 drives the second bevel gear 62. The second bevel gear 62 drives the drive gear 42. The drive gear 42 then drives the two transmission gears 41 to rotate synchronously in opposite directions through the transition gear 43 (in this embodiment, a transition gear 43 is provided between the drive gear 42 and each of the two transmission gears 41). This drives the main umbrella ribs 31 to rotate away from the support rod 1. As the main umbrella ribs 31 rotate, the umbrella surface 2 moves in a fan shape until the two main umbrella ribs 31 rotate to the end away from the main umbrella ribs 31, and the umbrella surface 2 opens.

[0054] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An opening and closing structure for a flat-top umbrella, comprising a support rod (1), an umbrella canopy (2), and umbrella ribs, wherein a driving device is provided on the support rod (1), characterized in that: The support rod (1) is connected to a support crossbar (11), and a center plate (12) is provided at the outer end of the support crossbar (11). The umbrella ribs include main umbrella ribs (31) provided at both ends of the umbrella surface (2) and secondary umbrella ribs (32) evenly provided on the umbrella surface (2). The main umbrella ribs (31) are rotatably engaged with the center plate (12). The driving device is connected to drive the main umbrella ribs (31) to make the umbrella surface (2) open or closed.

2. The opening and closing structure of a flat-top umbrella according to claim 1, characterized in that: The main umbrella rib (31) is provided with a transmission gear (41), and the center disk (12) is equipped with a drive gear (42). The drive gear (42) causes the two transmission gears (41) to rotate synchronously in opposite directions through the transition gear (43). The drive device is connected to the drive gear (42) for transmission.

3. The opening and closing structure of a flat-top umbrella according to claim 2, characterized in that: The driving device is a rocker arm (5), which is connected to a first transmission chain (51). The first transmission chain (51) is connected to a second transmission chain (52) via a conversion block (6). The second transmission chain (52) is connected to a transmission drive gear (42).

4. The opening and closing structure of a flat-top umbrella according to claim 2, characterized in that: The driving device is a rocker arm (5), which is connected to a first transmission chain (51). The first transmission chain (51) drives a second transmission chain (52), which is connected to a transmission drive gear (42) via a conversion block (6).

5. The opening and closing structure of a flat-top umbrella according to claim 3 or 4, characterized in that: The conversion block (6) is provided with a first bevel gear (61) and a second bevel gear (62) that mesh with each other.

6. The opening and closing structure of a flat-top umbrella according to claim 5, characterized in that: The main umbrella ribs (31) at both ends of the umbrella canopy (2) are magnetically fixed together when the umbrella is open.

7. The opening and closing structure of a flat-top umbrella according to claim 5, characterized in that: The main umbrella ribs (31) at both ends of the umbrella canopy (2) are fixed by fixing clips when the umbrella is open.

8. The opening and closing structure of a flat-top umbrella according to claim 3 or 4, characterized in that: The central disk (12) is equipped with a lighting lamp (7).

9. The opening and closing structure of a flat-top umbrella according to claim 8, characterized in that: A tie rod (13) is provided between the support rod (1) and the support crossbar (11).

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