STRAIGHT-POLE SUN UMBRELLA HAND-CRANKING DEVICE

Abstract

A straight-pole sun umbrella hand-cranking device comprises a standing pole and a shell fixed on the standing pole, wherein the shell comprises a first outer shell and a second outer shell. The shell is fixed on one side of the standing pole, and a rope winding wheel is mounted within the first and the second outer shells. The rope winding wheel is connected to a cranking shaft, and the cranking shaft is propelled to rotate through a cranking handle connected with the cranking shaft. An anti-slip mechanism is arranged on the cranking shaft. The anti-slip mechanism comprises a torsion spring, the torsion spring is sleeved on the cranking shaft. The rope winding wheel achieves easy winding or unwinding of the ropes, and the anti-slip performance is improved by the elastic force of the spring. As the aforesaid structure is protected against abrasion, its functional life is significantly prolonged.

Claims

1. A straight-pole sun umbrella hand-cranking device, comprising: a standing pole, and a shell fixed on the standing pole, wherein the shell comprises: a first outer shell, and a second outer shell, which is in a snap-fit with the first outer shell, wherein the shell is fixed on one side of the standing pole, and a rope winding wheel is mounted within the first outer shell and the second outer shell, wherein the rope winding wheel is connected to a cranking shaft, and the cranking shaft is propelled to rotate through a cranking handle connected with the cranking shaft, wherein an anti-slip mechanism is arranged on the cranking shaft, and the anti-slip mechanism is arranged within the inner cavity of the first outer shell, wherein the anti-slip mechanism comprises: a torsion spring, the torsion spring is sleeved on the cranking shaft, and the outer surface of the torsion spring is in contact with the inner cavity of the first outer shell.

2. The straight-pole sun umbrella hand-cranking device of claim 1, wherein a second umbrella rope is wound around the rope winding wheel, and a first pulley is arranged within the standing pole, wherein the second umbrella rope penetrates through a wall surface of the standing pole and is connected with a first umbrella rope after passing along the first pulley.

3. The straight-pole sun umbrella hand-cranking device of claim 2, wherein the standing pole is provided with an upper umbrella disc and a lower umbrella disc, wherein the upper umbrella disc is provided with two second pulleys, and two ends of the first umbrella rope are fixed within the lower umbrella disc, wherein a middle portion of the first umbrella rope passes along the second pulleys to form a U-shaped structure, and a second umbrella rope is fixedly connected with the center of the U-shaped structure.

4. The straight-pole sun umbrella hand-cranking device of claim 3, wherein each of the first pulley and the second pulleys is respectively provided with a cylindrical pin.

5. The straight-pole sun umbrella hand-cranking device of claim 1, wherein the rope winding wheel interacts with and abuts against the torsion spring.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0010] FIG. 1 a conceptual diagram illustrating an example structure of the present disclosure during use.

[0011] FIG. 2 is a conceptual diagram illustrating an example structure of the present disclosure.

[0012] In the Figures: 1—Standing Pole, 2—Upper Umbrella Disc, 3—Lower Umbrella Disc, 4a—First Umbrella Rope, 4b—Second Umbrella Rope, 5a—First Outer Shell, 5b—Second Outer Shell, 6—Rope Winding Wheel, 7—Cranking Shaft, 8—Torsion Spring, 9—Cylindrical Pin, 10—First Pulley, 11—Second Pulley, 12—Cylindrical Pin, 13—Cranking Handle.

DETAILED DESCRIPTION

[0013] Figures are combined hereinafter to further elaborate the technical solution of the present disclosure.

[0014] The straight-pole sun umbrella hand-cranking device of the present disclosure comprises a standing pole 1 and a shell fixed on the standing pole 1, wherein the shell comprises a first outer shell 5a and a second outer shell 5b which is in a snap-fit with the first outer shell 5a. The shell is fixed on one side of the standing pole 1. Cavities are symmetrically formed in the first outer shell 5a and the second outer shell 5b, and a rope winding wheel 6 is mounted in the cavities symmetrically formed in the first outer shell 5a and the second outer shell 5b. The rope winding wheel 6 is connected to a cranking shaft 7, wherein one portion of the cranking shaft 7 is located within the first outer shell 5a, and the other portion of the cranking shaft 7 is propelled to rotate through a cranking handle 13 connected with the cranking shaft 7. An anti-slip mechanism is arranged on the cranking shaft 7, and the anti-slip mechanism is arranged within the inner cavity of the first outer shell 5a. The anti-slip mechanism comprises a torsion spring 8, and the torsion spring 8 is sleeved on the cranking shaft 7. Namely, the torsion spring 8 is sleeved on a portion of the cranking shaft 7 which is located within the first outer shell 5a, and the outer surface of the torsion spring 8 is in contact with the inner cavity of the first outer shell 5a. The torsion spring 8 is installed based on its own elasticity. A second umbrella rope 4b is wound around the rope winding wheel 6, and a first pulley 10 is arranged within the standing pole 1. The second umbrella rope 4b penetrates through the wall surface of the standing pole 1 and is connected with a first umbrella rope 4a after passing along the first pulley 10.

[0015] The standing pole 1 is provided with an upper umbrella disc 2 and a lower umbrella disc 3. The upper umbrella disc 2 is provided with two second pulleys 11, and the two ends of the first umbrella rope 4a are fixed within the lower umbrella disc 3. The middle portion of the first umbrella rope 4a passes along the second pulleys 11 to form a U-shaped structure, and the second umbrella rope 4b is fixedly connected with the center of the U-shaped structure. Each of the first pulley 10 and the second pulleys 11 is respectively provided with a cylindrical pin (e.g., a cylindrical pin 9 and a cylindrical pin 12). The side of the rope winding wheel 6 installed on the first outer shell 5a is configured to be a recessed structure, and the cranking shaft 7 is wrapped by the outer edge of the rope winding wheel 6. The rope winding wheel 6 interacts with and abuts against the cranking shaft 7, namely, the torsion spring 8, thereby preventing the torsion spring 8 from escaping from the inner cavity of the first outer shell 5a. In this way, high anti-slip performance and prolonged functional life are achieved.

[0016] The structure of the aforesaid embodiment is only an explanation but not a limitation of the present disclosure. After reading the specification of the present disclosure, those skilled in the art may make modifications without paying creative labor. Thus, these modifications shall fall into the scope of the present disclosure.