A mobile umbrella base with a lifting mechanism

Abstract

The utility model discloses a mobile umbrella seat with lifting mechanism, including counterweight and lifting movement assembly, the lifting movement assembly includes installation frame, moving mechanism and lifting control mechanism, the lifting control mechanism is used to control the moving mechanism realizes lifting or subsidence, the lifting control mechanism includes control arm, lifting base and limiting mechanism, the control arm is used to drive lifting base to realize height position adjustment, the limiting mechanism is used to realize the locking of lifting base height position, the lifting base is used to drive moving mechanism to realize movement. The utility model optimizes lifting control mechanism to realize the locking restriction to lifting base position, finally drives the roller arm to take place the warped board movement, makes the roller to realize lifting or subsidence, and the whole base is moved or parked conveniently.

Description

Technical Field

[0001] This utility model relates to the field of outdoor umbrella holder technology, and in particular to a mobile umbrella holder with a lifting mechanism. Background Technology

[0002] Sun umbrellas, as an outdoor leisure tool, are widely used in squares, beaches, parks, and courtyards, providing people with a comfortable space to cool off. Because these large umbrellas have a large canopy area when open, they are susceptible to wind damage. To ensure stability and balance, the support tubes are usually fixed to the umbrella base. Furthermore, to prevent sun umbrellas from tipping over in the wind, current models require a sufficiently heavy umbrella base.

[0003] To maintain balance with the canopy, umbrella stands are typically large or heavy. When an umbrella stand is heavy enough and has a large contact area with the ground, moving it becomes very inconvenient. To address this technical issue, umbrella stands with wheels have been introduced to the market, making movement much easier and more convenient. When the wheels are not needed, they can be hidden at the bottom of the stand, allowing it to touch the ground. When the wheels are needed, they can be manually moved to roll freely. However, hiding and retracting the wheels requires manual operation, which is quite strenuous.

[0004] As disclosed in publication number CN215259008U, an electrically operated, liftable, movable umbrella stand is characterized by comprising, from top to bottom, a base, an air bladder, a wheel frame, and casters. The wheel frame is telescopically mounted on the bottom of the base via a connector. The casters are mounted on the wheel frame. The air bladder is installed between the wheel frame and the base. The air bladder is connected to an inflation device mounted on the base via an air tube. When the air bladder is inflated, the lower end of the caster protrudes from the base; when the air bladder is deflated, the bottom of the base is below the casters. This umbrella stand requires the user to inflate and deflate the internal air bladder, making it inflexible and inconvenient to use.

[0005] For example, CN212719002U discloses a manually adjustable movable base for outdoor umbrellas, including a base assembly, a screw rotatably coupled to the center of the base assembly, a crank lever driven by the screw and used to drive the screw to rotate, multiple pull rods rotatably coupled to the base assembly, and multiple bottom wheels disposed on the base assembly and correspondingly coupled to the pull rods. The lower end of the screw is screwed to a lifting block, which is connected to the pull rod. However, this structure requires manual cranking, and the user needs to bend over to crank it, making its operation relatively inconvenient. Utility Model Content

[0006] To address the aforementioned issues, this utility model aims to provide a mobile umbrella stand with a lifting mechanism, optimizing the lifting control mechanism to facilitate the raising or lowering of the rollers and improve operational convenience.

[0007] The technical problem solved by this utility model can be achieved by the following technical solution:

[0008] A mobile umbrella stand with a lifting mechanism includes a counterweight and a lifting and moving assembly. The lifting and moving assembly includes a mounting frame, a moving mechanism, and a lifting control mechanism. The lifting control mechanism controls the moving mechanism to raise or lower itself. The lifting control mechanism includes a control arm, a lifting base, and a limiting mechanism. The control arm drives the lifting base to adjust its height, and the limiting mechanism locks the height of the lifting base. The lifting base drives the moving mechanism to move. The limiting mechanism includes a limiting shaft, a limiting part located at the end of the limiting shaft, and a limiting seat that cooperates with the limiting part to restrict its position. The limiting part is movably engaged with the limiting shaft. One end of the limiting shaft is fitted with the lifting base. The limiting shaft can move along a limiting cavity within the limiting seat via the lifting base. The limiting part can be locked or disengaged from the limiting wall in the limiting cavity by flipping.

[0009] The limiting part is provided with a first contact part and a second contact part. The limiting cavity is provided with an initial cavity, a limiting cavity, and a repositioning cavity. The repositioning cavity is provided with a reversing contact part. The limiting cavity is provided with a limiting wall. The limiting part flips over by abutting against the reversing contact part. When the first contact part touches the limiting wall, the limiting part is engaged with the limiting wall in the limiting cavity. When the second contact part touches the limiting wall, the limiting part can penetrate the limiting cavity and be received in the initial cavity.

[0010] An inclined guide portion is provided on the bottom surface of the initial cavity.

[0011] The first touch portion and the second touch portion are respectively located at the four corners of the limiting portion. The surface where the second touch portion is located is the second contact surface, and the side adjacent to the second contact surface is the first contact surface. The second touch portion is convex relative to the second contact surface.

[0012] The length of the first contact surface is greater than the minimum inner diameter of the limiting cavity, the length of the second contact surface is less than the minimum inner diameter of the limiting cavity, and the length of the first contact surface is greater than the inner diameter of the initial cavity.

[0013] The limiting shaft includes a limiting shaft body, a shaft seat, and a sliding sleeve. One end of the limiting shaft body is rotatably engaged with a limiting part, and the other end is mounted with the shaft seat. The shaft seat is fixedly engaged with a lifting base. The limiting shaft body is fitted with the sliding sleeve, which is sleeved on the limiting seat and slides with the limiting seat.

[0014] The control arm is hinged to the lifting base. A hinged boom is provided between the middle of the control arm and the mounting frame. A central base is provided on the mounting frame. A movable guide column is fitted at the lower part of the central base. The lifting base is fitted onto the movable guide column. The control arm drives the lifting base to move up and down along the movable guide column.

[0015] The moving mechanism includes several moving units, each moving unit including a roller arm and a roller located at the lower part of the outer end of the roller arm. The mounting frame includes several support frames, the inner end of which is fitted with a central base. A hinge seat is provided in the middle of the support frame, and the hinge seat is hinged to the middle of the roller arm.

[0016] The inner end of the roller arm is installed in conjunction with the linkage seat in the lifting base. The lifting base is used to drive the inner end of the roller arm to rise or fall, so that the roller at the outer end of the roller arm can be raised or lowered. When the roller is in the raised state, the roller is higher than the horizontal plane of the bottom surface of the mounting frame. When the roller is in the lowered state, the roller is lower than the horizontal plane of the bottom surface of the mounting frame and is in contact with the ground.

[0017] The mounting frame also includes an outer frame, which is fitted with a frame seat at the outer end of the support frame.

[0018] The advantages of this utility model compared to the prior art are as follows: This utility model optimizes the lifting control mechanism and specially designs a limiting cavity and a flip-able limiting part. By using the lifting to drive the limiting part to resist and flip in the limiting cavity, different positions can be achieved, thereby realizing the limiting engagement or disengagement with the limiting cavity, thereby locking and restricting the position of the lifting base. Finally, it drives the roller arm to perform a rocker motion, so that the roller can be lifted or lowered, making it easy to move or park the entire base.

[0019] The features of this utility model can be clearly understood by referring to the drawings and the following detailed description of the preferred embodiments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the lifting and moving assembly structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the component structure of the lifting and moving assembly of this utility model;

[0023] Figure 4 This is a schematic diagram of the lifting and moving assembly of this utility model in a lifted cross-sectional state.

[0024] Figure 5 This is a schematic diagram of the lowered cross-sectional structure of the lifting and moving assembly of this utility model;

[0025] Figure 6 This is an exploded view of the lifting control mechanism of this utility model;

[0026] Figure 7 This is a schematic diagram of the limiting seat structure of this utility model;

[0027] Figure 8 This is a schematic diagram of the limiting part structure of this utility model;

[0028] Figure 9 This is a schematic cross-sectional view of the limiting mechanism of this utility model. Figure 1 ;

[0029] Figure 10 This is a schematic cross-sectional view of the limiting mechanism of this utility model. Figure 2 ;

[0030] Figure 11 This is a schematic cross-sectional view of the limiting mechanism of this utility model. Figure 3 ;

[0031] Figure 12 This is a schematic cross-sectional view of the limiting mechanism of this utility model. Figure 4 ;

[0032] Figure 13 This is a schematic cross-sectional view of the limiting mechanism of this utility model. Figure 5 ;

[0033] Figure 14 This is a schematic cross-sectional view of the limiting mechanism of this utility model. Figure 6 ;

[0034] Figure 15 This is a schematic cross-sectional view of the limiting mechanism of this utility model. Figure 7 ;

[0035] Figure 16 This is a schematic cross-sectional view of the limiting mechanism of this utility model. Figure 8 ;

[0036] Figure 17 This is a schematic cross-sectional view of the limiting mechanism of this utility model. Figure 9 ;

[0037] Figure 18This is a schematic cross-sectional view of the limiting mechanism of this utility model. Figure 10 . Detailed Implementation

[0038] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0039] Combination Figures 1 to 18 As shown, this utility model discloses a mobile umbrella seat with a lifting mechanism, including a counterweight 100 and a lifting and moving assembly 200. The counterweight 100 is preferably a water tank, a counterweight block, etc. The counterweight usually covers the upper part of the lifting and moving assembly 200, which is used to move the counterweight 100.

[0040] In its specific structure, the lifting and moving assembly 200 includes a mounting frame 300, a moving mechanism 400, and a lifting control mechanism 500. The lifting control mechanism 500 controls the moving mechanism 400 to lift or lower. Both the moving mechanism 400 and the lifting control mechanism 500 are installed within the mounting frame. The mounting frame 300 is used to accommodate the counterweight 100, which typically has a corresponding mounting slot for easy docking with the mounting frame 300. The moving mechanism 400 can move. When the user controls the lifting control mechanism 500 to lift the moving mechanism 400, the entire umbrella stand is placed still. When the user controls the lifting control mechanism 500 to lower the moving mechanism, the counterweight 100 is lifted as a whole, separating it from the ground. Combined with the moving mechanism 400, this allows for positional movement.

[0041] The lifting control mechanism 500 includes a control arm 510, a lifting base 520, and a limiting mechanism 530. The control arm 510 is used to drive the lifting base 520 to adjust its height. Depending on the usage, the control arm 510 can be connected to a handle or a foot pedal 511. In this embodiment, the foot pedal 511 is preferred. The user uses the foot pedal to perform a reciprocating pressing operation on the outer end of the control arm 510, thereby moving the inner end of the lifting base 520 up and down.

[0042] In the specific structure, the lifting control mechanism 500 uses a limiting mechanism 530 to lock the position and height. Specifically, the limiting mechanism 530 locks the height position of the lifting base 520, which in turn drives the moving mechanism 400 to move. The limiting mechanism 530 locks the position of the lifting base 520. When the lifting base 520 is in the locked position, it is in the upper position. The lifting base 520 drives the moving mechanism 400 to raise the position of its inner end, which is combined with the movement of the roller arm 410 in the moving unit of the moving mechanism 400. The rocker structure allows the roller 420 at the other end to sink, causing the entire counterweight 100 on the mounting frame 300 to move upwards. The roller 420 then moves the entire umbrella base. When the lifting base 520 is in the lower position, it drives the moving mechanism 400 to sink the inner end. Combined with the rocker structure of the roller arm 410, this lifts the middle roller 420 at the outer end. After the roller 420 moves upwards, the mounting frame 300 and the counterweight 100 move downwards, making contact with the ground and achieving a stationary position.

[0043] In the preferred structure of this embodiment, the limiting mechanism 530 includes a limiting shaft 531, a limiting part 532 located at the end of the limiting shaft 531, and a limiting seat 533 for limiting the position of the limiting part 532. The limiting part 532 is movably engaged with the limiting shaft 531. One end of the limiting shaft 531 is installed in conjunction with the lifting base 520. The limiting shaft 531 can move along the limiting cavity 540 in the limiting seat 533 via the lifting base 520. The limiting part 532 can be flipped to achieve limiting locking or disengagement with the limiting wall 545 in the limiting cavity 540. The limiting cavity 540 and the flippable limiting part 544 are optimized in design. By lifting, the limiting part 532 can be flipped in the limiting cavity 540 to achieve different position changes, thereby achieving limiting engagement or disengagement with the limiting cavity 540, and thus locking and limiting the position of the lifting base 520.

[0044] In the specific structure, the limiting part 532 is provided with a first contact part 5321 and a second contact part 5322. The first contact part 5321 and the second contact part 5322 are respectively located at the four corners of the limiting part 532. The surface where the second contact part 5322 is located is the second contact surface 5324, and the side adjacent to the second contact surface 5324 is the first contact surface 5323. The second contact part 5322 is protruding relative to the second contact surface 5324. The length of the first contact surface 5323 is greater than the minimum inner diameter of the limiting cavity 542, and the length of the second contact surface 5324 is less than the minimum inner diameter of the limiting cavity 542. The minimum inner diameter of the cavity 542 is greater than the length of the first contact surface 5323 than the inner diameter of the initial cavity 541. The limiting cavity 540 is provided with an initial cavity 541, a limiting cavity 542 and a switching cavity 543. The initial cavity 541 is the cavity that accommodates the limiting part 532 when it is at the bottom, at which time the umbrella base is in contact with the ground. The limiting cavity 542 is the position where it engages with the limiting part 532, specifically the locking position. The limiting cavity 542 is provided with a limiting wall 545. The limiting cavity 542 uses the limiting walls 545 on both sides to engage with the flipped limiting part 532 to complete the locking.

[0045] The switching cavity 543 is provided with a reversing contact part 544. The limiting part 532 flips by abutting the reversing contact part 544, in conjunction with the attached... Figures 9 to 13As shown, the limiting part 532 is located in the initial cavity 541. The rocker arm 510 is used to lift the lifting base 520, causing it to move upwards. The lifting base 520 then moves the limiting shaft 531 upwards, which in turn moves the limiting part 532 at its end upwards along the limiting cavity 540. The limiting part 532 moves upwards into the switching cavity 543, where it contacts the reversing contact part 544. At this time, the limiting part 532 is usually in a vertical state, and the second contact surface 5324 is on the upper surface. Preferably, the limiting part 532 has a parallelogram-like structure. After the second contact surface 5324 contacts the reversing contact part 544, the limiting part 532 slides along the inclined surface of the second contact surface 5324 and continues to deflect until it restricts the second contact part 5322. At this point, the control arm 510 is restricted. After the user releases the control arm 510, the limiting part 532 moves upwards into the switching cavity 544. The positioning part 532 moves downward according to gravity and the falling of the control arm 510. At this time, the first contact part 5321 contacts the limiting wall 545 in the limiting cavity 542. Due to the bias setting of the limiting part 532, the limiting part 532 will be in a balanced state. Therefore, it gradually moves the first contact surface 5323 to the upper surface. The first contact part 5321 located at the two symmetrical circumferential corners completes the engagement with the limiting walls 545 on both sides of the limiting cavity 542. Therefore, when the first contact part 5321 contacts the limiting wall 545, the limiting part 532 is engaged with the limiting wall 545 in the limiting cavity 542. Since there is no external force, the limiting part 532 cannot change due to gravity, thus locking the position of the lifting base 520 and making it in a raised state. This causes the roller 420 in the moving mechanism 400 to be in a sunken state, realizing the movement of the umbrella seat.

[0046] Combined with appendix Figures 14 to 18As shown, when the second contact part 5322 contacts the limiting wall 545, the limiting part 532 can penetrate the limiting cavity 542 and be housed in the initial cavity 541. Specifically, when the movement needs to be released, the user repeatedly steps on or moves the control arm 510. The rocker arm of the control arm 510 lifts the lifting base 520, causing it to move upwards. The lifting base 520 then moves the limiting shaft 531 upwards, which in turn moves the limiting part 532 at its end upwards along the limiting cavity 540. The limiting part 532 then moves upwards from the limiting cavity 542 into the switching cavity 543, where it contacts the reversing contact part 544. At this point, the limiting part 5322... In section 32, the first contact surface 5323 is located on the upper surface. The first contact surface 5323 comes into contact with the reversing contact part 544. Due to the contact with the reversing contact part 544, the limiting part 532 continues to deflect. The first contact surface 5323 and the reversing contact part 544 continue to slide until the limitation is achieved. At this time, the control arm 510 is restricted. After the user releases the control arm 510, the limiting part 532 moves downward according to gravity and the falling of the control arm 510. The second contact surface 5324 comes into contact with the limiting wall, causing the limiting part 532 to change to a vertical state until the limiting part 532 can pass through the limiting cavity 542 and fall into the initial cavity 541 to complete the reset.

[0047] Preferably, an inclined guide portion 546 is provided on the bottom surface of the initial cavity 541. The inclined guide portion 546 is used to ensure that the limiting portion 532 is always in an inclined state, so that the second contact surface 5324 is always kept on the upper surface in the initial state, so that after moving up, it can collide with the reversing contact portion 544 and realize the reversing deflection.

[0048] The limiting shaft 531 includes a limiting shaft body 5311, a shaft seat 5312, and a sliding sleeve 534. One end of the limiting shaft body 5311 is rotatably engaged with the limiting part 532, and the other end is installed with the shaft seat 5312. The shaft seat 5312 is fixedly engaged with the lifting base 520. The limiting shaft body 5311 passes through the sliding sleeve 534, which is sleeved on the limiting seat 532 and slides with it. The optimized design of the sliding sleeve 534 can increase the smoothness and stability of the limiting shaft 531 driving the limiting part 532 to move along the limiting cavity 540. The sliding sleeve also provides sidewall protection for the limiting part 532, ensuring that the deflection direction of the limiting part 532 is not affected by external interference, thus improving the limiting stability.

[0049] In summary, the control arm 510 is hinged to the lifting base 520. A hinged boom 330 is provided between the middle of the control arm 510 and the mounting frame 300. The hinged boom 330 facilitates the control arm 410 to realize a rocker structure. A central base 310 is provided on the mounting frame 300, and a movable guide column 320 is fitted at the lower part of the central base 310. The lifting base 520 is fitted onto the movable guide column 320, and the control arm 510 drives the lifting base 520 to move up and down along the movable guide column 320. The structure of the movable guide column 320 is optimized, making the up and down movement of the lifting base 520 smoother and more effective.

[0050] In summary, the moving mechanism 400 includes several moving units, typically four, arranged around the four corners. Each moving unit includes a roller arm 410 and a roller 420 located at the lower part of the outer end of the roller arm 410. The roller 420 adopts an existing universal wheel structure. The mounting frame 300 includes several support frames 360. The inner end of the support frame 360 ​​is fitted with the central base 310. A hinge seat 350 is provided in the middle of the support frame 360. The hinge seat 350 is hinged to the middle of the roller arm 410, which facilitates the roller arm 410 to realize a rocker structure.

[0051] In conjunction with the above, the inner end of the roller arm 410 is installed in conjunction with the linkage seat 521 in the lifting base 520. The lifting base 520 is used to drive the inner end of the roller arm 410 to rise or fall, so that the roller 420 at the outer end of the roller arm 410 can be raised or lowered. When the roller 420 is in the raised state, the roller 420 is higher than the horizontal plane of the bottom surface of the mounting frame 300, so that the umbrella stand can move. When the roller 420 is in the lowered state, the roller 420 is lower than the horizontal plane of the bottom surface of the mounting frame 300 and contacts the ground, so that the umbrella stand is placed.

[0052] In conjunction with the above, the mounting frame 300 also includes an outer frame 340, which is installed in conjunction with the frame seat 361 at the outer end of the support frame 360; the outer frame 340 is used to improve the overall strength and facilitate the alignment and installation of the matching counterweight 100.

[0053] This utility model optimizes the lifting control mechanism, and specially designs a limiting cavity and a flip-able limiting part. By using the lifting to drive the limiting part to resist and flip in the limiting cavity, different positions can be changed, thereby achieving limiting engagement or disengagement with the limiting cavity, thus locking and restricting the position of the lifting base. Finally, it drives the roller arm to perform a rocker motion, so that the roller can be raised or lowered, making it easy to move or park the entire base.

[0054] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the utility model. Any simple modifications, equivalent changes, or alterations made to the above embodiments based on the technical principles of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A movable umbrella stand with a lifting mechanism, comprising a counterweight and a lifting and moving assembly, characterized in that: The lifting and moving assembly includes a mounting frame, a moving mechanism, and a lifting control mechanism. The lifting control mechanism controls the moving mechanism to lift or lower. The lifting control mechanism includes a control arm, a lifting base, and a limiting mechanism. The control arm drives the lifting base to adjust its height. The limiting mechanism locks the height of the lifting base. The lifting base drives the moving mechanism to move. The limiting mechanism includes a limiting shaft, a limiting part located at the end of the limiting shaft, and a limiting seat that cooperates with the limiting part to restrict its position. The limiting part is movably engaged with the limiting shaft. One end of the limiting shaft is installed in conjunction with the lifting base. The limiting shaft can move along the limiting cavity within the limiting seat via the lifting base. The limiting part can be locked or disengaged from the limiting wall in the limiting cavity by flipping.

2. A movable umbrella stand with a lifting mechanism according to claim 1, characterized in that: The limiting part is provided with a first contact part and a second contact part. The limiting cavity is provided with an initial cavity, a limiting cavity, and a repositioning cavity. The repositioning cavity is provided with a reversing contact part. The limiting cavity is provided with a limiting wall. The limiting part flips over by abutting against the reversing contact part. When the first contact part touches the limiting wall, the limiting part is engaged with the limiting wall in the limiting cavity. When the second contact part touches the limiting wall, the limiting part can penetrate the limiting cavity and be received in the initial cavity.

3. A movable umbrella stand with a lifting mechanism according to claim 2, characterized in that: An inclined guide portion is provided on the bottom surface of the initial cavity.

4. A movable umbrella stand with a lifting mechanism according to claim 3, characterized in that: The first contact portion and the second contact portion are located at the four corners of the limiting portion, respectively. The surface where the second contact portion is located is the second contact surface, and the side adjacent to the second contact surface is the first contact surface. The second contact portion is raised relative to the second contact surface.

5. A movable umbrella stand with a lifting mechanism according to claim 4, characterized in that: The length of the first contact surface is greater than the minimum inner diameter of the limiting cavity, the length of the second contact surface is less than the minimum inner diameter of the limiting cavity, and the length of the first contact surface is greater than the inner diameter of the initial cavity.

6. A movable umbrella stand with a lifting mechanism according to any one of claims 2 to 5, characterized in that: The limiting shaft includes a limiting shaft body, a shaft seat, and a sliding sleeve. One end of the limiting shaft body is rotatably engaged with a limiting part, and the other end is mounted with the shaft seat. The shaft seat is fixedly engaged with a lifting base. The limiting shaft body is fitted with the sliding sleeve, which is sleeved on the limiting seat and slides with the limiting seat.

7. A movable umbrella stand with a lifting mechanism according to claim 6, characterized in that: The control arm is hinged to the lifting base. A hinged boom is provided between the middle of the control arm and the mounting frame. A central base is provided on the mounting frame. A movable guide column is fitted at the lower part of the central base. The lifting base is fitted onto the movable guide column. The control arm drives the lifting base to move up and down along the movable guide column.

8. A movable umbrella stand with a lifting mechanism according to claim 7, characterized in that: The moving mechanism includes several moving units, each moving unit including a roller arm and a roller located at the lower part of the outer end of the roller arm. The mounting frame includes several support frames, the inner end of which is fitted with a central base. A hinge seat is provided in the middle of the support frame, and the hinge seat is hinged to the middle of the roller arm.

9. A movable umbrella stand with a lifting mechanism according to claim 8, characterized in that: The inner end of the roller arm is installed in conjunction with the linkage seat in the lifting base. The lifting base is used to drive the inner end of the roller arm to rise or fall, so that the roller at the outer end of the roller arm can be raised or lowered. When the roller is in the raised state, the roller is higher than the horizontal plane of the bottom surface of the mounting frame. When the roller is in the lowered state, the roller is lower than the horizontal plane of the bottom surface of the mounting frame and is in contact with the ground.

10. A movable umbrella stand with a lifting mechanism according to claim 9, characterized in that: The mounting frame also includes an outer frame, which is fitted with a frame seat at the outer end of the support frame.

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