Hand-Push Sunshade

Abstract

A hand-push umbrella comprises a column (1), an upper nest (2) movably disposed at the top of the column (1), a lower nest (3) movably sleeved on the column (1), a plurality of long rods (10) having an upper end mounted on the upper nest (2) and a plurality of first short rods (20) having a lower end mounted on the lower nest (3) and an upper end hinged to the middle portion of the long rod (10); a first retainer ring (4) is sleeved on the column (1) above the lower nest (3) and is fixed with the column (1), a handle (8) is connected to the bottom of the lower nest (3), a handle control mechanism is disposed inside the lower nest (3). The umbrella is simple and reasonable in structure, and can be easily and fast unfolded and folded. A tray (7) and a plurality of second short stretchers (30) greatly strengthen the support to the canopy (100) and improve the stability of the structure.

Claims

1. A hand-push umbrella, comprising: a vertical column having a top; an upper nest operated by a movable ejector rod and capable of moving up and down along the column; a lower nest having a bottom and a top and being movably sleeved on the column; a plurality of long rods, each having an upper end mounted on the upper nest, an upper portion, a middle portion and a lower end; a canopy connected to the plurality of long rods; a plurality of first short rods, each having a lower end mounted on the lower nest, and an upper end hinged to the middle portion of the long rod; wherein, a first retainer ring is sleeved on the column above the lower nest, and the first retainer ring is fixed with the column and located at a position that limits upward movement of the lower nest when the canopy is in an open position; a handle is connected to the bottom of the lower nest, and a handle control mechanism, which is capable of locking and unlocking with the first retainer ring, is disposed inside the lower nest.

2. The umbrella of claim 1, wherein the handle control mechanism comprises a second retainer ring and a sleeve with a top and a bottom, the handle is a circular tube having a top and a bottom and is movable and limitedly rotatably sleeved on the column, and the top of the handle is connected to the sleeve which is capable of rotating with the handle; the lower nest has an annular gap for receiving the first retainer ring at top of the lower nest, the second retainer ring is transversely movable and is disposed inside the lower nest located above the sleeve; the first retainer ring has an annular neck on the periphery of the first retainer ring, while the second retainer ring has a limiting protrusion capable of being blocked inside the annular neck protruding on the left side of the second retainer ring, the second retainer ring also has a locking block protruding diagonally opposite to the limiting protrusion; when the lower nest upward movement is limited by the first retainer ring, the limiting protrusion is located inside the annular neck and is blocked by the first retainer ring, so as to lock the canopy in an open position; the sleeve has a pushing protrusion for pushing the second retainer ring disposed on the top of the sleeve; when the sleeve rotates with the handle, the pushing protrusion rotates to the left side of the second retainer ring and is capable of pushing the locking block to force the second retainer ring move leftward, so as to make the limiting protrusion be detached from the annular neck of the first retainer ring, accordingly, the lower nest is unlocked with the first retainer ring and the canopy can be folded.

3. The umbrella of claim 2, wherein the first retainer ring has a truncated cone bottom for fitting into the lower nest; the second retainer ring has a spring rod protruding on the periphery surface of the left side of the second retainer ring, and the lower nest has a corresponding spring hole, a spring, with two ends respectively sleeved on the spring rod and located inside the spring hole on the lower nest, keeps the limiting protrusion of the second retainer ring blocked inside the annular neck of the first retainer ring.

4. The umbrella of claim 3, wherein the sleeve has a step on the top of the sleeve, and the top of the sleeve is limited inside the lower nest, the bottom of the sleeve extends out of the lower nest, the top of the handle is inserted into the lower nest and connected to the sleeve; the pushing protrusion of the sleeve is disposed on an outer edge of a rear side of the top of the sleeve and resists against the periphery of the second retainer ring; when the sleeve rotates clockwise under the rotation of the handle, the pushing protrusion rotates to a right side of the second retainer ring and diagonally opposite to the limiting protrusion, accordingly, the second retainer ring is capable of being pushed by the pushing protrusion to move leftward against the force of the spring, so that the limiting protrusion is detached from the annular neck.

5. The umbrella of claim 4, wherein the second retainer ring has a stopper configured to stop the rotation of the pushing protrusion, the stopper is protruding on the peripheral surface of the second retainer ring.

6. The umbrella of claim 5, wherein a returning spring is disposed between the step on the top of the sleeve and the inner wall of the lower nest; when the handle is released, the returning spring forces the sleeve to return to an original position, and the spring forces the second retainer ring to return to an original position.

7. The umbrella of claim 1, wherein a fixed tray located above the retainer ring is disposed on the column, and a plurality of second short rods configured to strengthen the support to the canopy are mounted on the tray, one end of each short rod is connected to the tray, and the other end of each second short rod is hinged to the upper portion of the long rod.

8. The umbrella of claim 7, wherein both the pushing protrusion and the locking block have an inclined guide surface for pushing the locking block.

9. The umbrella base of claim 8, wherein a lock hole for receiving the locking block is disposed on the inner wall of the lower nest.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG. 1 is a perspective view of a hand-push umbrella according to an embodiment of the present invention;

[0017] FIG. 2 is a perspective view of FIG. 1 without a canopy;

[0018] FIG. 3 is a sectional view according to the embodiment of the present invention in which a lower nest is locked with a first retainer ring;

[0019] FIG. 4 is a sectional view according to the embodiment of the present invention in which a handle drives a sleeve to rotate and a pushing protrusion pushes a second retainer ring;

[0020] FIG. 5 is a sectional view according to the embodiment of the present invention in which the lower nest is detached from the first retainer ring.

DETAILED DESCRIPTION OF THE INVENTION

[0021] The present invention will be further described in detail by embodiments with reference to the accompanying drawings.

[0022] As shown in FIGS. 1 to 5, a hand-push umbrella comprises a column 1, an upper nest 2, a tray 7, a lower nest 3, a plurality of long rods 10, a plurality of first short rods 20, a plurality of second short rods 30, and a handle 8. A movable ejector rod 21 is fixed in the center of the upper nest 2 and can move up and down at the top of the column 1. The lower nest 3 is movably sleeved on the column 1, an upper end of each long rod 10 is hinged on the upper nest 2, and a lower end of each first short rod 20 is hinged on the lower nest 3 and an upper end thereof is hinged to the middle portion of the long rod 10. A first retainer ring 4 is sleeved on the column 1 above the lower nest 3, and the first retainer ring 4 is fixed with the column 1 and located at a position that limits upward movement of the lower nest 3 when a canopy 100 is in an open position. The tray is fixedly sleeved on the column 1 and located between the first retainer ring 4 and the upper nest 2. The second short rods 30 configured to strengthen the support to the canopy 100 are hinged on the tray 7, one end of each short rod 30 is connected to the tray 7, and the other end of each second short rod 30 is hinged to the upper portion of the long rod 10. A handle control mechanism, which is capable of locking and unlocking with the first retainer ring 4, is disposed inside the lower nest 3, the handle 8 is a circular tube having a top and a bottom and is movable and limitedly rotatably sleeved on the column 1, and an upper end of the handle 8 is connected to the handle control mechanism.

[0023] The handle control mechanism comprises a second retainer ring 5 and a sleeve 6 with a top and a bottom, the lower nest 3 has an annular gap for receiving the first retainer ring 4 at top of the lower nest 3, the second retainer ring 5 is transversely movable and is disposed inside the lower nest 3 located above the sleeve 6; the first retainer ring 4 has an annular neck 41 on the periphery of the first retainer ring 4, while the second retainer ring 5 has a limiting protrusion 51 capable of being blocked inside the annular neck 41 protruding on the left side of the second retainer ring 5; when the lower nest 3 upward movement is limited by the first retainer ring 4, the limiting protrusion 51 is located inside the annular neck 41 and is blocked by the first retainer ring 4, so as to lock the canopy 100 in an open position. The first retainer ring 4 has a truncated cone bottom for fitting into the lower nest 3, the second retainer ring 5 has a spring rod 53 protruding on the periphery surface of the left side of the second retainer ring 5, and the lower nest 3 has a corresponding spring hole, a spring 40, with two ends respectively sleeved on the spring rod 53 and located inside the spring hole on the lower nest 3, keeps the limiting protrusion 51 of the second retainer ring 5 blocked inside the annular neck 41 of the first retainer ring 4. The sleeve 6 has a step on the top of the sleeve 6, and the top of the sleeve 6 is limited inside the lower nest 3, the bottom of the sleeve 6 extends out of the lower nest 3, the top of the handle 8 is inserted into the lower nest 3 and connected to the sleeve 6, and can drive the sleeve 6 to rotate. A pushing protrusion 61 which can push the second retainer ring 5 is convexly disposed on the upper end of the sleeve 6, and disposed on an outer edge of a rear side of the top of the sleeve 6 and resists against the periphery of the second retainer ring 5. Correspondingly, the second retainer ring 5 has a locking block 54 protruding diagonally opposite to the limiting protrusion 51, a matching lock hole is formed on an inner wall surface of the lower nest 3, and both the pushing protrusion 61 and the locking block 54 are provided with a guide bevel that facilitates pushing the locking block 54. When the sleeve 6 rotates clockwise under the rotation of the handle 8, the pushing protrusion 61 rotates to a right side of the second retainer ring 5 and diagonally opposite to the limiting protrusion 51 to push the locking block 54, the second retainer ring 5 is capable of being pushed by the pushing protrusion 61 to move leftward against the force of the spring 40, so that the limiting protrusion 51 is detached from the annular neck 41, while the locking block 54 is also detached from the matching lock hole, so that the canopy 100 is folded. The second retainer ring 5 has a stopper 52 configured to stop the rotation of the pushing protrusion 61, the stopper is protruding on the peripheral surface of the second retainer ring 5, and a returning spring 50 is disposed between the step on the top of the sleeve 6 and the inner wall of the lower nest 3, when the handle 8 is released, the returning spring 50 forces the sleeve 6 to return to an original position, and the spring 40 forces the second retainer ring 5 to return to an original position.

[0024] When in use, the handle 8 is pushed upward so that the first retainer ring 4 is inserted into the lower nest 3, the second retainer ring 5 is clamped and locked with the first retainer ring 4 under the action of the spring 40, and the locking block 54 is locked with the lock hole on the inner wall surface of the lower nest 3. As shown in FIG. 3, the unfolding state of the canopy 100 can be locked. When the sleeve 6 rotates clockwise under the rotation of the handle 8, the pushing protrusion 61 on the sleeve 6 pushes the second retainer ring 5 to move leftward against the force of the spring 40. As shown in FIG. 4, the second retainer ring 5 is detached from the first retainer ring 4, and the locking block 54 is also detached from the matching lock hole. As shown in FIG. 5, after the handle 8 is pulled down, the canopy 100 can be folded. After the canopy 100 is folded and the handle 8 is released, the returning spring 50 forces the sleeve 6 to return to an original position during which the pushing protrusion 61 is detached from the second retainer ring 5 and the spring 40 forces the second retainer ring 5 to return to an original position.

[0025] The protection scope of the present invention is not limited to each embodiments described in this description. Any changes and replacements made on the basis of the scope of the present invention patent and of the description shall be included in the scope of the present invention patent.