A clutch mechanism and a push umbrella using the same

Abstract

The utility model provides a kind of clutch mechanism and application the hand-push umbrella of this clutch mechanism, belong to hand-push umbrella technical field.It solves the technical problems such as the complex installation procedure, high manufacturing cost, tedious operation of existing hand-push umbrella clutch mechanism.The upper end of handle in this clutch mechanism is shaped with positioning convex ring, snap is set in column and can partially extend positioning hole, first elastic member is set in column and will snap be pushed outwards, the hook that can be matched with snap to realize axial positioning is set on positioning convex ring, hook can rotate with handle and be separated from snap;The hand-push umbrella includes umbrella surface, upper umbrella disc, long umbrella rib, short umbrella rib and above-mentioned clutch mechanism.The utility model realizes the hidden positioning of clutch mechanism, realizes unlocking by rotating handle, simple structure, easy to install, simple operation mode.

Description

Technical Field

[0001] This utility model belongs to the field of hand-push umbrella technology, specifically referring to a clutch mechanism and a hand-push umbrella using the clutch mechanism. Background Technology

[0002] Currently, most hand-push umbrellas on the market have protruding buttons on their exteriors. You need to hold and press the button to close the umbrella. The assembly process is complicated and the labor cost is high. They are also not aesthetically pleasing. When the umbrella is open, there is a protruding plastic block that affects the appearance.

[0003] For example, utility model application number 202120851237.6 discloses a novel structure for a hand-push sunshade umbrella. The umbrella frame assembly has a pole assembly in the middle, and an upper umbrella plate assembly is provided between the pole assembly and the umbrella frame assembly. A slidable handrail shell assembly is installed at the upper end of the pole assembly. The handrail shell assembly is used to open or close the umbrella frame assembly. A spring pin that can move laterally is installed inside the handrail shell assembly. The pole assembly has several positioning holes for the spring pin to pass through, and the handrail shell assembly has a button for controlling the movement of the spring pin.

[0004] Therefore, how to simplify the installation process of the clutch mechanism, reduce manufacturing costs, and make it more convenient to operate has become an urgent technical problem to be solved. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a clutch mechanism and a hand-pushed umbrella that are simple in process, low in cost and easy to operate.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A clutch mechanism includes a column, a lower umbrella plate, and a handle, characterized in that: the lower umbrella plate includes an upper lower umbrella plate and a lower lower umbrella plate; the upper lower umbrella plate, the lower lower umbrella plate, and the handle are all sleeved on the column and can move along the column; the upper end of the handle is formed with an outwardly protruding positioning ring; the upper lower umbrella plate and the lower umbrella plate are fixedly connected and enclose a receiving cavity that can accommodate the positioning ring; the column is provided with a positioning hole; a snap button that can partially extend out of the positioning hole is provided inside the column; a first elastic element that pushes the snap button outward is provided inside the column; the upper lower umbrella plate is provided with a through hole for the snap button to pass through; the positioning ring is provided with a hook that can cooperate with the snap button to achieve axial positioning; the upper part of the hook has an inclined surface that is higher on the outside and lower on the inside; the hook can rotate with the handle and disengage from the snap button.

[0008] This clutch mechanism achieves concealed positioning by placing the snap button inside the column and having it partially protrude from the positioning hole by being pushed by the first elastic element. At the same time, a through hole is opened on the upper plate of the lower umbrella disc for the snap button to pass through, and a hook with an inclined surface is set on the positioning protrusion ring at the top of the grip. This design allows the positioning component (the mating point of the snap button and the hook) to be completely accommodated in the receiving cavity formed by the upper and lower plates of the lower umbrella disc. No protruding positioning button or structure can be observed from the outside. The appearance is simple and smooth, the overall structure is simplified, and the assembly is convenient, which helps to reduce production costs.

[0009] When the umbrella is in position, push the handle upwards, and the inclined surface of the hook can smoothly press the snap into the column, and automatically pop out and engage after it is in place, making the operation smooth.

[0010] When closing and unlocking the umbrella, simply rotate the handle to disengage the hook from the snap button and pull it down. The operation is simple and convenient, eliminating the need to search for and press exposed buttons, which significantly improves the user experience.

[0011] In the aforementioned clutch mechanism, a notch is provided on the positioning convex ring, a baffle is provided in the accommodating cavity, the baffle is located in the notch, and a second elastic element is provided between one side wall of the notch and the baffle to push the side wall away from the baffle. When the other side wall of the notch abuts against the baffle, the hook and the snap are located in the same vertical plane.

[0012] The above design is a one-way rotation unlocking scheme. The notch on the positioning protrusion cooperates with the baffle in the accommodating cavity, and a second elastic element is set between one side wall of the notch and the baffle, forming a reliable rotation reset mechanism. When the handle rotates and the other side wall of the notch abuts against the baffle, the hook is exactly in the same vertical plane as the snap button, ensuring accurate and reliable positioning. The second elastic element can automatically push the handle and the hook back to the initial position aligned with the snap button, ensuring that the mechanism can automatically reset after each umbrella closing operation, preparing for the next umbrella opening positioning, improving the reliability and consistency of operation. This structure is ingeniously designed and the reset action is stable.

[0013] In the aforementioned clutch mechanism, a notch is provided on the positioning convex ring, a baffle is provided in the accommodating cavity, the baffle is located inside the notch, the baffle is located in the middle of the notch, and a second elastic element is provided between the two side walls of the notch and the baffle. The hook and the snap are located in the same vertical plane.

[0014] The above design is a two-way rotation unlocking scheme. A second elastic element is set between the two side walls of the positioning protrusion notch and the baffle. This allows the handle to automatically, stably and centrally reset to the position where the hook and snap are aligned, regardless of whether it is rotated to the left or right to unlock. This further improves the ease of unlocking. At the same time, its reset function has high reliability and centering accuracy. The positioning is completed accurately every time the umbrella is opened, which improves the durability of the product and user satisfaction.

[0015] In one of the aforementioned clutch mechanisms, the notch is fan-shaped, and the angle α of the notch is less than 170 degrees.

[0016] Designing the notch on the positioning protrusion as a fan shape with an angle of less than 170 degrees effectively limits the rotation angle range of the grip. A smaller rotation angle is sufficient to disengage the hook from the snap position, making operation quicker and easier. Limiting excessive rotation stroke prevents overstretching or compression of internal structures (such as the second elastic element) due to excessive rotation, thus avoiding damage and improving the lifespan and reliability of the mechanism. Users only need to slightly twist the grip to unlock, resulting in a better user experience. Simultaneously, this design allows for a larger contact area between the positioning protrusion and the lower umbrella plate, making the grip less prone to tilting and improving stability after the grip and lower umbrella plate are connected.

[0017] In one of the above-mentioned clutch mechanisms, the second elastic element is a compression spring, and a positioning protrusion is provided on one or both side walls of the notch, the positioning protrusion being able to be inserted into the compression spring.

[0018] A positioning protrusion is provided on the side wall of the notch, which can be inserted into the compression spring. This structure effectively prevents the compression spring from lateral slippage or dislocation during compression or extension, ensuring that the compression spring always works on the predetermined trajectory, providing a stable and reliable elastic restoring force, and improving the stability and service life of this clutch mechanism. Alternatively, this second elastic element can also be a spring wire, rubber spring, etc.

[0019] In one of the aforementioned clutch mechanisms, at least two positioning blocks are provided on the lower side of the upper plate of the lower umbrella disc, which abut against the positioning protrusion ring. The positioning blocks are located on the left and right sides of the through hole, respectively, and the minimum distance D between the positioning block and the through hole is greater than the width W of the hook.

[0020] Positioning blocks are installed on the lower side of the upper panel of the lower umbrella plate and on both sides of the through hole, and abut against the positioning protrusion ring, providing stable axial support for the positioning protrusion ring. This makes the axial connection between the lower umbrella plate and the handle more stable and firm, ensuring that the lower umbrella plate and the handle can have good axial synchronization during opening and closing of the umbrella. The minimum distance D between the positioning block and the through hole is greater than the width W of the hook, which ensures that the hook has enough rotation space when it needs to disengage from the snap.

[0021] In one of the aforementioned clutch mechanisms, the baffle is fixedly connected to the lower part of the lower umbrella disc, and a support protrusion is provided on the lower side of the upper part of the lower umbrella disc. The lower side of the support protrusion abuts against the upper edge of the baffle, and there is a gap between the lower side of the support protrusion and the upper side of the positioning protrusion ring.

[0022] The baffle is fixed to the lower part of the lower umbrella disc, ensuring a stable structure. The support protrusion is located on the lower side of the upper part of the lower umbrella disc, with its lower side abutting against the upper edge of the baffle. This effectively distributes part of the load from the upper umbrella disc and the umbrella ribs, enhancing the overall load-bearing capacity and resistance to deformation. At the same time, a gap is maintained between the lower side of the support protrusion and the upper side of the positioning protrusion, avoiding interference with the rotation of the positioning protrusion and reserving axial space for the installation of the compression spring, ensuring smooth and unobstructed rotation unlocking operation.

[0023] In the aforementioned clutch mechanism, the inner end of the snap button is formed with an outwardly protruding limiting protrusion, and the inner side of the snap button is provided with a mounting groove. The first elastic element is a spring wire, and one end of the spring wire can be inserted into the mounting groove.

[0024] A limiting protrusion is provided at the inner end of the snap fastener to effectively prevent it from completely disengaging from the post under elastic force. A spring wire is used as the first elastic element, one end of which can be inserted into the mounting groove on the inner side of the snap fastener, making installation simple and reliable. Compared with coil springs, the spring wire has smaller radial dimension requirements, which is beneficial for arrangement in the narrow space inside the post, while providing stable elastic force to ensure that the snap fastener can reliably pop out and engage with the hook. This structure simplifies the assembly of the snap fastener assembly and improves reliability. As an alternative, the first elastic element can also be a compression spring.

[0025] A hand-push umbrella, characterized in that it includes an umbrella canopy, an upper umbrella plate, long umbrella ribs, short umbrella ribs, and the aforementioned clutch mechanism. The upper umbrella plate is fixed to the top of a column. The inner end of the long umbrella rib is hinged to the upper umbrella plate. The inner end of the short umbrella rib is hinged to the lower umbrella plate. The outer end of the short umbrella rib is hinged to the upper middle part of the long umbrella rib. There are multiple long and short umbrella ribs. The long and short umbrella ribs are arranged in a circular array with the central axis of the column as the center. The umbrella canopy is connected to the long umbrella ribs.

[0026] In the aforementioned hand-push umbrella, the long umbrella ribs and the short umbrella ribs are connected by an umbrella rib support, the umbrella rib support is fixedly connected to the long umbrella ribs, and the umbrella rib support is hinged to the short umbrella ribs.

[0027] The hand-push umbrella using the aforementioned clutch mechanism inherits all its advantages: simple and beautiful appearance (no exposed buttons), simple and convenient operation (rotation unlock), simplified assembly process, and low manufacturing cost; at the same time, the umbrella rib structure composed of the upper umbrella plate, long umbrella ribs, short umbrella ribs, and umbrella rib support, in conjunction with the clutch mechanism, can achieve smooth opening and closing of the umbrella surface; the umbrella rib support connects the long umbrella ribs and the short umbrella ribs, further enhancing the stability and strength of the umbrella rib structure. The overall hand-push umbrella has a reasonable structure, reliable performance, and significantly improved user experience.

[0028] The opening principle of this hand-push umbrella is as follows: When the umbrella is closed, push the handle upwards and use the inclined surface of the top of the hook in the handle to squeeze the snap in. When the handle is pushed to the designated position, the snap will automatically pop out, thereby fixing the handle and the lower umbrella plate axially. At this time, the umbrella canopy is fully opened. The snap plays the role of positioning and fixing the umbrella canopy to prevent it from sliding down.

[0029] Closing principle: When you need to close the umbrella, simply hold the handle and rotate it left or right to disengage the hook at the top of the handle from the snap button. Then pull the handle down to close the umbrella. The spring installed inside the lower umbrella plate will automatically return the handle to its original position.

[0030] The clutch mechanism of this application has a simple process, low cost, and an integrated appearance. The positioning is also hidden inside the lower umbrella plate, making the appearance more aesthetically pleasing.

[0031] Compared with the prior art, the technical effects of this utility model are as follows:

[0032] 1. Significantly improved appearance: The exposed positioning buttons or protrusions on traditional umbrellas have been completely eliminated. The positioning mechanism (buttons and hooks) is completely hidden inside the lower umbrella tray, making the outer surface of the umbrella smooth and seamless, with a simple and beautiful visual effect.

[0033] 2. Extremely simple operation: When opening the umbrella, simply push the handle upwards; the internal inclined surface design automatically compresses the snap button and locks it in place. When closing the umbrella, simply rotate the handle (left or right) to disengage the hook from the snap button, then pull it down to close. There is no need to search for or press any exposed buttons throughout the process; in particular, the umbrella closing and unlocking action can be completed with a single hand by rotating the handle, making operation intuitive and convenient.

[0034] 3. Simplified structure and low cost: The concealed design and rotary unlocking mechanism reduce the number of parts (such as exposed buttons and related actuators), simplify the assembly process, and significantly reduce the labor and material costs of production and assembly.

[0035] 4. Reliable positioning and accurate reset: The snap button pops out and engages under the action of the first elastic element, ensuring a firm positioning; the second elastic element (or double elastic elements) ensures that the handle can automatically and accurately reset to the positioning state after being unlocked by rotation, improving the reliability and lifespan of use.

[0036] 5. Overall performance optimization: Supporting protrusions, positioning blocks and other auxiliary structures enhance the overall rigidity and stability, ensuring that the umbrella canopy remains stable and does not slip after it is opened. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0038] Figure 2 This is a partial cross-sectional view of the lower umbrella disc of this utility model. Figure 1 .

[0039] Figure 3 This is a partial cross-sectional view of the lower umbrella disc of this utility model. Figure 2 .

[0040] Figure 4 This is a schematic diagram of the assembly structure of the column, lower umbrella plate and handle of this utility model.

[0041] Figure 5 This is a schematic diagram of the connection structure of the lower umbrella disc, handle, and upright of this utility model.

[0042] Figure 6 This is a top view of the lower umbrella disc, handle, and upright of this utility model.

[0043] Figure 7 This is a schematic diagram of the grip structure of this utility model.

[0044] Figure 8 This is a schematic diagram of the structure of the lower umbrella disc of this utility model.

[0045] Figure 9 This is a schematic diagram of the structure of the upper piece of the lower umbrella disc of this utility model.

[0046] Figure 10 This is a schematic diagram of the snap fastener structure of this utility model.

[0047] In the diagram, 1. Lower umbrella tray; 11. Upper piece of lower umbrella tray; 111. Through hole; 112. Positioning block; 113. Supporting protrusion; 12. Lower piece of lower umbrella tray; 121. Baffle; 13. Receiving cavity; 14. Second elastic element; 2. Handle; 21. Positioning protrusion ring; 211. Notch; 212. Positioning protrusion; 22. Hook; 221. Inclined surface; 3. Post; 31. Positioning hole; 32. Snap fastener; 321. Limiting protrusion; 322. Mounting groove; 33. First elastic element; 4. Upper umbrella tray; 5. Long umbrella rib; 6. Short umbrella rib; 7. Umbrella rib support. Detailed Implementation

[0048] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0049] This clutch mechanism includes a column 3, a lower umbrella plate 1, and a handle 2. The lower umbrella plate 1 includes an upper lower umbrella plate 11 and a lower lower umbrella plate 12. The upper lower umbrella plate 11, the lower lower umbrella plate 12, and the handle 2 are all sleeved on the column 3 and can move along the column 3. The upper end of the handle 2 is formed with an outwardly protruding positioning ring 21. The upper lower umbrella plate 11 and the lower umbrella plate 1 are fixedly connected and enclose to form a receiving cavity 13 that can accommodate the positioning ring 21. The column 3 is provided with positioning holes. 31. A snap 32 that can partially extend out of the positioning hole 31 is provided inside the column 3. A first elastic element 33 that pushes the snap 32 outward is provided inside the column 3. A through hole 111 for the snap 32 to pass through is provided on the upper plate 11 of the lower umbrella disc. A hook 22 that can cooperate with the snap 32 to achieve axial positioning is provided on the positioning protrusion ring 21. The upper part of the hook 22 has an inclined surface 221 that is higher on the outside and lower on the inside. The hook 22 can rotate with the handle 2 and disengage from the snap 32. This clutch mechanism achieves concealed positioning by placing the snap button 32 inside the column 3 and pushing it partially out of the positioning hole 31 by the first elastic member 33. At the same time, a through hole 111 is opened in the upper plate 11 of the lower umbrella tray for the snap button 32 to pass through, and a hook 22 with an inclined surface 221 is provided on the positioning protrusion ring 21 at the top of the handle 2. This design allows the positioning component (the mating point between the snap button 32 and the hook 22) to be completely accommodated in the receiving cavity 13 formed by the upper plate 11 and the lower plate 12 of the lower umbrella tray. No protruding positioning button or structure can be observed from the outside. The appearance is simple and smooth, the overall structure is simplified, and the assembly is convenient, which helps to reduce production costs.

[0050] When the umbrella is in position, push the handle 2 upwards, and the inclined surface 221 of the hook 22 can smoothly press the snap 32 into the column 3, and automatically pop out and engage after it is in place, making the operation smooth. When closing the umbrella and unlocking, simply rotate the handle 2 to disengage the hook 22 from the snap 32 position and pull it down. The operation is simple and convenient, without the need to find and press the exposed button, which significantly improves the user experience.

[0051] As one embodiment, the positioning protrusion 21 is provided with a notch 211, and a baffle 121 is provided in the accommodating cavity. The baffle 121 is located in the notch 211. A second elastic member 14 is provided between one side wall of the notch 211 and the baffle 121 to push the side wall away from the baffle 121. When the other side wall of the notch 211 abuts against the baffle 121, the hook 22 and the snap 32 are located in the same vertical plane. The above design is a one-way rotation unlocking scheme. The notch 211 on the positioning protrusion 21 cooperates with the baffle 121 in the accommodating cavity, and a second elastic element 14 is set between one side wall of the notch 211 and the baffle 121, forming a reliable rotation reset mechanism. When the handle 2 rotates so that the other side wall of the notch 211 abuts against the baffle 121, the hook 22 is exactly in the same vertical plane as the snap button 32, ensuring accurate and reliable positioning. The second elastic element 14 can automatically push the handle 2 and the hook 22 back to the initial position aligned with the snap button 32, ensuring that the mechanism can automatically reset after each umbrella closing operation, preparing for the next umbrella opening positioning, improving the reliability and consistency of operation. This structure is ingeniously designed and the reset action is stable.

[0052] As another design, the positioning ring 21 has a notch 211, and a baffle 121 is provided inside the accommodating cavity. The baffle 121 is located inside the notch 211 and in the middle of the notch 211. A second elastic element 14 is provided between the two side walls of the notch 211 and the baffle 121. The hook 22 and the snap button 32 are located in the same vertical plane. The above design is a two-way rotation unlocking scheme. The second elastic element 14 is provided between the two side walls of the notch 211 of the positioning ring 21 and the baffle 121, so that after the handle 2 is rotated to the left or right to unlock, it can automatically, stably and centrally return to the position where the hook 22 and the snap button 32 are aligned under the combined action of the elastic elements on both sides. This further improves the ease of unlocking. At the same time, its reset function also has high reliability and centering accuracy. The positioning can be completed accurately every time the umbrella is opened, improving the durability of the product and user satisfaction.

[0053] like Figure 6 As shown, the angle α of the notch 211 is less than 170 degrees. Designing the notch 211 on the positioning protrusion 21 as a fan shape with an angle less than 170 degrees effectively limits the rotation angle range of the grip 2. A smaller rotation angle is sufficient to disengage the hook 22 from the snap 32, making operation quicker and easier. It also limits excessive rotational stroke, preventing excessive stretching or compression of internal structures (such as the second elastic element 14) due to excessive rotation, thus improving the service life and reliability of the mechanism. Users only need to slightly twist the grip 2 to unlock, resulting in a better user experience. Simultaneously, this design also allows for a larger contact area between the positioning protrusion 21 and the lower umbrella plate 12, making the grip 2 less prone to tilting and improving the stability of the grip 2 after it is connected to the lower umbrella plate 1.

[0054] like Figure 6 and Figure 7 As shown, the second elastic element 14 is a compression spring. A positioning protrusion 212 is provided on one or both sidewalls of the notch 211, and the positioning protrusion 212 can be inserted into the compression spring. The positioning protrusion 212 on the sidewall of the notch 211, which can be inserted into the compression spring, effectively prevents the compression spring from lateral slippage or dislocation during compression or extension, ensuring that the compression spring always works on a predetermined trajectory, providing a stable and reliable elastic restoring force, and improving the stability and service life of this clutch mechanism. Alternatively, the second elastic element 14 can also be a spring wire, rubber spring, etc.

[0055] like Figure 3 , Figure 6 and Figure 9 As shown, at least two positioning blocks 112 are provided on the lower side of the upper part 11 of the lower umbrella tray, abutting against the positioning protrusion 21. The positioning blocks 112 are located on the left and right sides of the through hole 111, and the minimum distance D between the positioning blocks 112 and the through hole 111 is greater than the width W of the hook 22. The positioning blocks 112 are provided on the lower side of the upper part 11 of the lower umbrella tray and on the left and right sides of the through hole 111, abutting against the positioning protrusion 21, providing stable axial support for the positioning protrusion 21, making the axial connection between the lower umbrella tray 1 and the handle 2 more stable and firm, and ensuring that the lower umbrella tray 1 and the handle 2 can have good axial synchronization during the opening and closing of the umbrella. The minimum distance D between the positioning blocks 112 and the through hole 111 is greater than the width W of the hook 22, which ensures that when the hook 22 needs to be disengaged from the snap button 32, the hook 22 has sufficient rotation space.

[0056] like Figure 8 As shown, the baffle 121 is fixedly connected to the lower umbrella tray 12. A support protrusion 113 is provided on the lower side of the upper umbrella tray 11. The lower side of the support protrusion 113 abuts against the upper edge of the baffle 121, and there is a gap between the lower side of the support protrusion 113 and the upper side of the positioning protrusion ring 21. The baffle 121 is fixed to the lower umbrella tray 12, and the structure is stable. The support protrusion 113 is located on the lower side of the upper umbrella tray 11, and its lower side abuts against the upper edge of the baffle 121, effectively distributing part of the load from the upper umbrella tray 4 and the umbrella ribs, enhancing the overall load-bearing capacity and deformation resistance of the structure. At the same time, the gap between the lower side of the support protrusion 113 and the upper side of the positioning protrusion ring 21 avoids interference with the rotation of the positioning protrusion ring 21 and also reserves axial space for the installation of the compression spring, ensuring smooth and unobstructed rotation unlocking operation.

[0057] like Figure 10As shown, the inner end of the snap fastener 32 has an outwardly protruding limiting protrusion 321, and the inner side of the snap fastener 32 has a mounting groove 322. The first elastic element 33 is a spring wire, one end of which can be inserted into the mounting groove 322. The limiting protrusion 321 at the inner end of the snap fastener 32 effectively prevents the snap fastener 32 from completely disengaging from the column 3 under elastic force. Using a spring wire as the first elastic element 33, with one end inserted into the mounting groove 322 on the inner side of the snap fastener 32, makes installation simple and reliable. Compared to coil springs, the spring wire has a smaller radial dimension requirement, which is beneficial for arrangement in the narrow space inside the column 3, while providing stable elastic force to ensure that the snap fastener 32 can reliably pop out and engage with the hook 22. This structure simplifies the assembly of the snap fastener 32 assembly and improves reliability. Alternatively, the first elastic element 33 can also be a compression spring.

[0058] A hand-push umbrella includes an umbrella canopy, an upper umbrella plate 4, long umbrella ribs 5, short umbrella ribs 6, and the aforementioned clutch mechanism. The upper umbrella plate 4 is fixed to the top of the column 3. The inner end of the long umbrella rib 5 is hinged to the upper umbrella plate 4, the inner end of the short umbrella rib 6 is hinged to the lower umbrella plate 1, and the outer end of the short umbrella rib 6 is hinged to the upper middle part of the long umbrella rib 5. There are multiple long umbrella ribs 5 and short umbrella ribs 6. The long umbrella ribs 5 and short umbrella ribs 6 are arranged in a circular array with the central axis of the column 3 as the center. The umbrella canopy is connected to the long umbrella ribs 5.

[0059] Furthermore, the long umbrella rib 5 and the short umbrella rib 6 are connected by the umbrella rib support 7. The umbrella rib support 7 is fixedly connected to the long umbrella rib 5 and hinged to the short umbrella rib 6. The hand-push umbrella using the above-mentioned clutch mechanism inherits all its advantages: simple and beautiful appearance (no exposed buttons), simple and convenient operation (rotation unlocking), simplified assembly process, and low manufacturing cost. At the same time, the umbrella rib structure composed of the upper umbrella plate 4, the long umbrella rib 5, the short umbrella rib 6, and the umbrella rib support 7, in conjunction with the clutch mechanism, can achieve smooth opening and closing of the umbrella surface. The umbrella rib support 7 connects the long umbrella rib 5 and the short umbrella rib 6, further enhancing the stability and strength of the umbrella rib structure. The overall hand-push umbrella has a reasonable structure, reliable performance, and significantly improved user experience.

[0060] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection defined by the claims of the present utility model.

Claims

1. A clutch mechanism, comprising a column (3), a lower umbrella plate (1), and a handle (2), characterized in that: The lower umbrella tray (1) includes an upper lower umbrella tray piece (11) and a lower lower umbrella tray piece (12). The upper lower umbrella tray piece (11), the lower lower umbrella tray piece (12), and the handle (2) are all sleeved on the column (3) and can move along the column (3). The upper end of the handle (2) is formed with an outwardly protruding positioning ring (21). The upper lower umbrella tray piece (11) and the lower umbrella tray (1) are fixedly connected and enclosed to form a receiving cavity (13) that can accommodate the positioning ring (21). The column (3) is provided with a positioning hole (31). The column (3) is provided with a positioning hole (31). A snap (32) is provided that can partially extend out of the positioning hole (31). The column (3) is provided with a first elastic element (33) that pushes the snap (32) outward. The upper plate (11) of the lower umbrella disc is provided with a through hole (111) for the snap (32) to pass through. The positioning protrusion (21) is provided with a hook (22) that can cooperate with the snap (32) to achieve axial positioning. The upper part of the hook (22) has an inclined surface (221) that is higher on the outside and lower on the inside. The hook (22) can rotate with the handle (2) and disengage from the snap (32).

2. The clutch mechanism according to claim 1, characterized in that: The positioning protrusion (21) is provided with a notch (211), and a baffle (121) is provided in the receiving cavity (13). The baffle (121) is located in the notch (211). A second elastic element (14) is provided between one side wall of the notch (211) and the baffle (121) to push the side wall away from the baffle (121). When the other side wall of the notch (211) abuts against the baffle (121), the hook (22) and the snap (32) are located in the same vertical plane.

3. The clutch mechanism according to claim 1, characterized in that: The positioning protrusion (21) is provided with a notch (211), and a baffle (121) is provided in the receiving cavity (13). The baffle (121) is located in the notch (211) and in the middle of the notch (211). A second elastic element (14) is provided between the two side walls of the notch (211) and the baffle (121). The hook (22) and the snap (32) are located in the same vertical plane.

4. A clutch mechanism according to claim 2 or 3, characterized in that: The notch (211) is fan-shaped, and the angle α of the notch (211) is less than 170 degrees.

5. A clutch mechanism according to claim 2 or 3, characterized in that: The second elastic element (14) is a compression spring, and a positioning protrusion (212) is provided on one or both side walls of the notch (211), which can be inserted into the compression spring.

6. A clutch mechanism according to claim 2 or 3, characterized in that: At least two positioning blocks (112) that abut against the positioning protrusion (21) are provided on the lower side of the upper plate (11) of the lower umbrella disc. The positioning blocks (112) are located on the left and right sides of the through hole (111) respectively. The minimum distance D between the positioning block (112) and the through hole (111) is greater than the width W of the hook (22).

7. A clutch mechanism according to claim 6, characterized in that: The baffle (121) is fixedly connected to the lower part of the lower umbrella disc (12). A support protrusion (113) is provided on the lower side of the upper part of the lower umbrella disc (11). The lower side of the support protrusion (113) abuts against the upper edge of the baffle (121). There is a gap between the lower side of the support protrusion (113) and the upper side of the positioning protrusion (21).

8. A clutch mechanism according to claim 1, characterized in that: The inner end of the snap (32) is formed with an outwardly protruding limiting protrusion (321), and the inner side of the snap (32) is provided with an installation groove (322). The first elastic element (33) is a spring wire, and one end of the spring wire can be inserted into the installation groove (322).

9. A hand-push umbrella, characterized in that, The umbrella includes a canopy, an upper canopy disc (4), long umbrella ribs (5), short umbrella ribs (6), and a clutch mechanism as described in any one of claims 1-7. The upper canopy disc (4) is fixed to the top of the column (3). The inner end of the long umbrella rib (5) is hinged to the upper canopy disc (4). The inner end of the short umbrella rib (6) is hinged to the lower canopy disc (1). The outer end of the short umbrella rib (6) is hinged to the upper middle part of the long umbrella rib (5). There are multiple long umbrella ribs (5) and short umbrella ribs (6). The long umbrella ribs (5) and short umbrella ribs (6) are arranged in a circular array with the central axis of the column (3) as the center. The canopy is connected to the long umbrella ribs (5).

10. A hand-pushed umbrella according to claim 9, characterized in that: The long umbrella rib (5) and the short umbrella rib (6) are connected by an umbrella rib support (7), which is fixedly connected to the long umbrella rib (5) and hinged to the short umbrella rib (6).

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