Comfortably movable sun umbrella base

Abstract

The invention describes a movable sun umbrella base, wherein a pull rod assembly is disposed on at least one side of the outer frame, fixed tubes are cooperatively disposed at both ends of the pull rod assembly, a limiting assembly is disposed at an end of each fixed tube, which is connected to the underframe, the pull rod assembly can be overturned when being drawn outwards relative to the fixed tubes, the limiting assemblies are in a limiting fit with the pull rod assembly overturned upwards, and at the same time, the roller wheels at the bottom of the underframe are downwards exposed out of the outer frame to abut against the ground, so as to achieve the movement of the base.

Description

TECHNICAL FIELD

[0001] The invention belongs to the technical field of sun umbrella bases, and in particular, relates to a comfortably movable sun umbrella base.BACKGROUND ART

[0002] Nowadays, uses of sun umbrellas can be seen everywhere. The sun umbrellas are usually supported by umbrella bases, and most of the umbrella bases are carried manually. The weight of an umbrella base is an important factor to stably support an umbrella body, and the umbrella base must be heavy enough to support the umbrella body, so the umbrella base is usually heavy and can be moved only through the cooperation of several people during manual carrying, which is not only time-consuming and laborious, but also has a high risk factor, therefore, it is extremely inconvenient for moving the sun umbrella. From DE202006002271U1 an example of a comfortably movable sun umbrella base with wheels and a pull rod assembly is known.SUMMARY OF THE INVENTION

[0003] In order to solve the problems of difficult carrying of sun umbrella bases and inconvenient movement of sun umbrellas, the invention is designed to provide a solution of a comfortably movable sun umbrella base.

[0004] A comfortably movable sun umbrella base includes an outer frame, an underframe being disposed in the outer frame, and roller wheels being provided at the bottom of the underframe. A pull rod assembly is disposed on at least one side of the outer frame, fixed tubes are cooperatively disposed at both ends of the pull rod assembly, a limiting assembly is disposed at an end of each fixed tube, the limiting assembly is connected to the underframe, the pull rod assembly can be overturned when being drawn outwards relative to the fixed tubes to the extent that the pull rod assembly abuts against the ends of the fixed tubes, the limiting assemblies are in a limiting fit with the pull rod assembly overturned upwards, and at the same time, through a warp motion, the roller wheels at the bottom of the underframe are downwards exposed out of the outer frame to abut against the ground, so as to achieve the movement of the base.

[0005] Further, the pull rod assembly includes a pull rod, guide rods are disposed at both ends of the pull rod, and the guide rods are disposed in the fixed tubes and can be drawn to move along the fixed tubes.

[0006] Further, the guide rod includes a convex groove that is opened at the bottom, snapping members are disposed on both sides of the top of the convex groove, an inner guide rod is disposed in the convex groove, and the inner guide rod is fixed to a corner connector at one end, and provided with a top member and a pulley that drives the guide rod to move along a bottom wall of the fixed tube at the other end.

[0007] Further, the limiting assembly includes a supporting member disposed between the fixed tube and the underframe, the supporting member is provided with a limiting slot for the top member and the pulley to snap into at the top, and the fixed tube is cooperatively provided with a notch at a position corresponding to the limiting slot.

[0008] Further, the limiting assembly further includes a locking member disposed in the fixed tube and configured to cooperatively abut against the snapping member.

[0009] Further, an arc-shaped groove provided in the snapping member achieves that the locking member snaps tightly against the snapping member within a corresponding angle of the arc-shaped groove.

[0010] Further, an upper frame is provided on the top of the outer frame, the pull rod assembly is disposed on the upper frame, the upper frame is an L-shaped frame, fixed on the top of the outer frame at one end by fixing members, and provided with a panel on the top of the other end, and the pull rod assembly is disposed in an L-shaped end surface.

[0011] Further, the fixed tube is fixed to the upper frame at the bottom and provided with channel grooves inside, the guide rods are cooperatively disposed in the channel grooves, and the guide rod is fixed to the corner connector at one end, and provided with the top member at the other end.

[0012] Further, the corner connector comprises a fan-shaped insert that is connected by inserting to the pull rod and a convex insert that fits with the convex groove of the guide rod.

[0013] Further, the guide rod is fixed to the convex insert through a fastener disposed at the top of the fixed tube.

[0014] Compared with the prior art, the invention has the following advantages: through the cooperation of the provided pull rod assemblies and limiting assemblies, not only the roller wheels can be driven and guided to be downwards exposed out of the outer frame to abut against the ground, so as to finish the movement of the base, but also the roller wheels can be made to enter the outer frame upwards to be hidden, such that the outer frame abuts against the ground, so as to achieve the fixation of the base; and after the roller wheels are downwards exposed out of the outer frame, the sun umbrella base can be comfortably moved by pushing the pull rod that is lifted up.BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG. 1 is a schematic diagram of a structure in a fixed state of a base of the invention; FIG. 2 is an upward view of the structure of FIG. 1 of the invention; FIG. 3 is a sectional view of C of FIG. 2 of the invention; FIG. 4 is a schematic diagram of the structure of the invention after an outer frame and a panel are removed; FIG. 5 is an internal diagram of a fixed tube of the invention; FIG. 6 is an enlarged view of B in FIG. 5 of the invention; FIG. 7 is an enlarged view of C in FIG. 6 of the invention; FIG. 8 is an expanded view of a pull rod of the invention; FIG. 9 is a schematic diagram of the structure in a movable state of the base of the invention; FIG. 10 is an enlarged view of D in FIG. 9 of the invention; and FIG. 11 is an enlarged view of E in FIG. 9 of the invention.

[0016] In the figures: 1-outer frame, 11-underframe, 12-cross-shaped reinforcing frame, 13-upper frame, 2-panel, 3-pull rod, 4-fixed tube, 41-guide rod, 411-convex groove, 412- pulley, 413-top member, 414-snapping member, 42-fixing member, 43-fastener, 5-tripod, 6-supporting member, 61-limiting slot, 7-corner connector, 71-fan-shaped insert, 72-convex insert, 8-blocking member, 9-locking member, 10-roller wheel.DETAILED DESCRIPTION OF EMBODIMENTS

[0017] The present invention will be further described below with reference to the drawings.

[0018] As shown in FIGS. 1-11, a comfortably movable sun umbrella base includes an outer frame 1, an underframe 11 being disposed in the outer frame 1, and roller wheels 10 being provided at the bottom of the underframe 11. An upper frame 13 is disposed on the outer frame 1, a pull rod assembly is disposed on at least one side of the upper frame 13, fixed tubes 4 are cooperatively disposed at both ends of the pull rod assembly, a limiting assembly is disposed at an end of each fixed tube 4, the limiting assembly is connected to the underframe 11, the pull rod assembly can be overturned when being drawn outwards relative to the fixed tubes 4 to the extent that the pull rod assembly abuts against the ends of the fixed tubes 4, the limiting assemblies are in a limiting fit with the pull rod assembly overturned upwards, and at the same time, through a warp motion, the roller wheels 10 at the bottom of the underframe 11 are downwards exposed out of the outer frame 1 to abut against the ground, so as to achieve the movement of the base.

[0019] Specifically, the pull rod assembly includes a pull rod 3, guide rods 41 are disposed at both ends of the pull rod 3, and the guide rods 41 are disposed in the fixed tubes 4 and can be drawn to move along the fixed tubes 4. The guide rod 41 includes a convex groove 411 that is opened at the bottom, snapping members 414 are disposed on both sides of the top of one end of the convex groove 411 that is away from the pull rod 3, an inner guide rod is disposed in the convex groove 411, and the inner guide rod is fixed to a corner connector 7 at one end, and provided with a top member 413 and a pulley 412 that drives the guide rod 41 to move along a bottom wall of the fixed tube 4 at the other end. The limiting assembly includes a supporting member 6 disposed between the fixed tube 4 and the underframe 11, the supporting member 6 is provided with a limiting slot 61 for the top member 413 and the pulley 412 to snap into at the top, and the fixed tube 4 is cooperatively provided with a notch at a position corresponding to the limiting slot 61. In addition, the limiting assembly further includes a locking member 9 disposed in the fixed tube 4 and configured to cooperatively abut against the snapping member 414.

[0020] Specifically, the upper frame 13 is an L-shaped frame, fixed on the top of the outer frame 1 at one end by fixing members 42, and provided with a panel 2 on the top of the other end, and the pull rod assembly is disposed in an L-shaped end surface. In addition, a cross-shaped reinforcing frame 12 is disposed between the upper frame 13 and the underframe 11, the upper surface of the cross-shaped reinforcing frame 12 is fixed to the panel 2, and four legs are connected by inserting between the upper frame 13 and the underframe 11. Tripods 5 are disposed at four corners of the underframe 11, and the side walls of the tripods 5 are snapped and connected between the upper frame 13 and the underframe 11, which is not only configured to improve a strength of connection between the supporting underframe 11 and the upper frame 13, but also can provide a lateral support force for the supporting member 6 disposed on the underframe 11.Embodiment 1

[0021] As shown in FIGS. 3-11, a set of pull rod assemblies is oppositely disposed on an outer frame 13. The pull rod assembly includes a pull rod 3, where the pull rod 3 is a fan-shaped tube, and fan-shaped insert 71 ends of corner connectors 7 are fixed by inserting into tube openings at both ends, and convex insert 72 ends of the corner connectors 7 are connected to fixed tubes 4. The fixed tube 4 is a square tube, fixed to the upper frame 13 at the bottom, and provided with two channel grooves parallelly inside, guide rods 41 are cooperatively disposed in the channel grooves, and the two guide rods 41 are disposed opposite to each other, fixed to the corner connectors 7 at one end, and provided with top members 413 at the other end. Specifically, as shown in FIG. 7, the guide rod 41 includes a convex groove 411 that is opened at the bottom, an inner guide rod is disposed in the convex groove 411, the inner guide rod is fixed to the corner connector 7 at one end, and provided with a connecting block at the other end, a bearing is disposed on the connecting block, the top member 413 and a pulley 412 that moves along a bottom wall of the fixed tube 4 are disposed on the bearing, and snapping members 414 are disposed on both sides of the top of the convex groove 411. The pulley 412 is disposed at one end of the guide rod to realize the smooth movement of the guide rod 41 in the fixed tube 4. As shown in FIG. 4, the two guide rods 41 are disposed oppositely in the fixed tube 4. The guide rod 41 in one channel groove at the junction of the fixed tube 4 and the corner connector 7 is fixed by inserting to the convex insert 72 of the connector 7. The guide rod 41 is fixed to the convex insert 72 by a fastener 43 disposed on the top of the fixed tube 4. And, at the bottom of the fixed tube 4 in this channel groove, a notch corresponding to the limiting slot 61 of the supporting member 6 is provided; and in the other channel groove, a blocking member 8 is provided. A locking member 9 is disposed on one side of the blocking member 8 that is adjacent to the guide rod 41. The locking member 9 is not only configured to fix the blocking member 8, but also can be pressed against the snapping member 414 at the end of the guide rod 41, that is, when the locking member 9 abuts against the snapping member 414, it means that an extractable part of the guide rod 41 has reached its limit. A contact surface of the snapping member 414 that is in contact with the locking member 9 is an arc-shaped groove, and through the locking member 9, the snapping member 414 that is lifted up is snapped and fixed in a corresponding angle of the arc-shaped groove.

[0022] The principle of the movement of the sun umbrella base is as follows: the movable rods 3 are drawn out to both sides, that is, the guide rods 41 connected to the corner connectors 7 on both sides of the movable rods 3 move outward along the bottom walls of the fixed tubes 4, until the snapping members 414 of the guide rods 41 in the channel grooves abut against the locking members 9 provided at the notches of the other channel grooves of the fixed tubes 4, the movable rods 3 are lifted up, the top members 413 and the pulleys 412 on the guide rods 41 are snapped downward into the limiting slots 61 of the supporting members 6 through the notches at the bottom of the fixed tubes 4, the angle is adjusted such that the locking members 9 are snapped and fastened in the arc-shaped grooves of the snapping members 414, and at the same time, a downward force drives the supporting members 6 to act downward, and through a warp motion, the underframe 11 and the roller wheels 10 at the bottom of the underframe act downwards, and then the roller wheels 10 are exposed out of the outer frame 1 to abut against the ground, so as to achieve the movement of the base; and the guide rods 41 are pushed down, such that the locking members 9 leave from insides of the arc-shaped grooves of the snapping members 414, the top members 413 at the ends of the guide rods 41 are drawn out of the limiting slots 61, and then the supporting members 6 and the underframe 11 move upwards, and through a warp motion, the roller wheels 10 are made to enter the outer frame 1 upwards to be hidden, such that the outer frame 1 abuts against the ground, so as to achieve the fixation of the base.

[0023] In order to push the base more easily and stably, a set of pull rod assemblies is preferably provided in this embodiment.Embodiment 2

[0024] A pull rod assembly is disposed on one side of the outer frame 1. The pull rod assembly includes a pull rod 3, guide rods 41 are disposed at both ends of the pull rod 3, the guide rods 41 are disposed in the fixed tubes 4 and can be drawn to move along the fixed tubes 4. The fixed tube 4 is a square tube, fixed to an upper frame 13 at the bottom, and provided with channel grooves inside, guide rods 41 are cooperatively disposed in the channel grooves, and the guide rods 41 are fixed to corner connectors 7 at one end, and provided with top members 413 at the other end. A locking member 9 disposed in the fixed tube 4 and configured to cooperatively abut against a snapping member 414. The other structures are basically the same as those in Embodiment 1, and will not be repeated here.

[0025] The principle of the movement of the sun umbrella base is as follows: the pull rods 3 are drawn out to both sides, that is, the guide rods 41 connected to the corner connectors 7 on both sides of the pull rods 3 move outward along the bottom walls of the fixed tubes 4, until the snapping members 414 of the guide rods 41 in the channel grooves abut against the locking members 9 provided at the notches of the fixed tubes 4, the movable rods 3 are lifted up, the top members 413 and the pulleys 412 on the guide rods 41 are snapped downward into the limiting slots 61 of the supporting members 6 through the notches at the bottom of the fixed tubes 4, the angle is adjusted such that the locking members 9 are snapped and fastened in the arc-shaped grooves of the snapping members 414, and at the same time, a downward force drives the supporting members 6 to act downward, and through a warp motion, the underframe 11 and the roller wheels 10 at the bottom of the underframe act downwards, and then the roller wheels 10 are exposed out of the outer frame 1 to abut against the ground, so as to achieve the movement of the base; and the guide rods 41 are pushed down, such that the locking members 9 leave from insides of the arc-shaped grooves of the snapping members 414, the top members 413 at the ends of the guide rods 41 are drawn out of the limiting slots 61, and then the supporting members 6 and the underframe 11 move upwards, and through a warp motion, the roller wheels 10 are made to enter the outer frame 1 upwards to be hidden, such that the outer frame 1 abuts against the ground, so as to achieve the fixation of the base.

[0026] Finally, it should be noted that the foregoing embodiments are merely intended for describing the technical solutions of the invention rather than limiting the invention. Although the invention has been described in detail with reference to the foregoing embodiments, persons of ordinary skill in the art should understand that modifications may be made to the technical solutions described in the foregoing embodiments or equivalent substitutions are made to some or all of the technical features therein, and these modifications or substitutions do not cause the essence of corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the invention, as long as these fall within the scope of the appended claims.

Claims

1. A comfortably movable sun umbrella base, comprising an outer frame (1), an underframe (11) being disposed in the outer frame (1), and roller wheels (10) being provided at the bottom of the underframe (11), wherein a pull rod assembly is disposed on at least one side of the outer frame (1), fixed tubes (4) are cooperatively disposed at both ends of the pull rod assembly, a limiting assembly is disposed at an end of each fixed tube (4), the limiting assembly is connected to the underframe (11), the pull rod assembly can be overturned when being drawn outwards relative to the fixed tubes (4) to the extent that the pull rod assembly abuts against the ends of the fixed tubes (4), the limiting assemblies are in a limiting fit with the pull rod assembly overturned upwards, and at the same time, through a warp motion, the roller wheels (10) at the bottom of the underframe (11) are downwards exposed out of the outer frame (1) to abut against the ground, so as to achieve the movement of the base.

2. The comfortably movable sun umbrella base according to claim 1, wherein the pull rod assembly comprises a pull rod (3), guide rods (41) are disposed at both ends of the pull rod (3), and the guide rods (41) are disposed in the fixed tubes (4) and can be drawn to move along the fixed tubes (4).

3. The comfortably movable sun umbrella base according to claim 2, wherein the guide rod (41) comprises a convex groove (411) that is opened at the bottom, snapping members (414) are disposed on both sides of the top of the convex groove (411), an inner guide rod is disposed in the convex groove (411), and the inner guide rod is fixed to a corner connector (7) at one end, and provided with a top member (413) and a pulley (412) that drives the guide rod (41) to move along a bottom wall of the fixed tube ( 4) at the other end.

4. The comfortably movable sun umbrella base according to claim 3, wherein the limiting assembly comprises a supporting member (6) disposed between the fixed tube (4) and the underframe (11), the supporting member (6) is provided with a limiting slot (61) for the top member (413) and the pulley (412) to snap into at the top, and the fixed tube (4) is cooperatively provided with a notch at a position corresponding to the limiting slot (61).

5. The comfortably movable sun umbrella base according to claim 3, wherein the limiting assembly further comprises a locking member (9) disposed in the fixed tube (4) and configured to cooperatively abut against the snapping member (414).

6. The comfortably movable sun umbrella base according to claim 5, wherein an arc-shaped groove provided in the snapping member (414) achieves that the locking member (9) snaps tightly against the snapping member (414) within a corresponding angle of the arc-shaped groove.

7. The comfortably movable sun umbrella base according to any one of claims 1-6, wherein an upper frame (13) is provided on the top of the outer frame (1), the pull rod assembly is disposed on the upper frame (13), the upper frame (13) is an L-shaped frame, fixed on the top of the outer frame (1) at one end by fixing members (42), and provided with a panel (2) on the top of the other end, and the pull rod assembly is disposed in an L-shaped end surface.

8. The comfortably movable sun umbrella base according to claim 7, wherein the fixed tube (4) is fixed to the upper frame (13) at the bottom and provided with channel grooves inside, the guide rods (41) are cooperatively disposed in the channel grooves, and the guide rod is fixed to the corner connector (7) at one end, and provided with the top member (413) at the other end.

9. The comfortably movable sun umbrella base according to claim 8, wherein the corner connector (7) comprises a fan-shaped insert (71) that is connected by inserting to the pull rod (3) and a convex insert (72) that fits with the convex groove (411) of the guide rod (41).

10. The comfortably movable sun umbrella base according to claim 9, wherein the guide rod (41) is fixed to the convex insert (72) through a fastener (43) disposed at the top of the fixed tube (4).

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