Large umbrella based on lever principle
A lever principle and large-scale technology, which is applied in the field of sunshade and rainshade umbrellas and beach umbrellas. It can solve the problems of large energy consumption and inconvenient use, and achieve the effects of reducing force, balancing force, and convenient operation of opening the umbrella.
Active Publication Date: 2011-08-17
张容
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Problems solved by technology
[0003] To sum up, the purpose of the present invention is to solve the technical problems of large energy consumption and inconvenient use of traditional large umbrellas in the process of opening and closing.
Method used
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[0018] Below in conjunction with accompanying drawing and preferred specific embodiment, structure of the present invention is described further:
[0019] Referring to FIG. 1 , the present invention includes: an umbrella middle rod 1 , an inner middle rod 11 , an upper nest 2 , a middle nest 3 , a lower nest 4 , long bones 5 , supporting bones 6 and linkage rods 7 .
[0020] The bottom end of the inner middle rod 11 is inserted into the inner chamber of the umbrella middle rod 1 from the top of the umbrella middle rod 1 , and the inner middle rod 11 can stretch out from the umbrella middle rod 1 upwards. The upper nest 2 is fixedly connected to the top of the inner middle stick 11, the lower nest 4 is fixedly connected to the umbrella middle stick 1, the middle nest 3 is placed between the upper nest 2 and the lower nest 4, and the space between the upper nest 2 and the lower nest 4 is movable. Connected by socket, the middle nest 3 can slide up and down along the umbrella mid...
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The invention provides a large umbrella based on the lever principle, relates to the technical field of umbrellas for shading sunlight and rain, and particularly relates to the technical field of large beach umbrellas, wherein the large umbrella is used for solving the problem that the traditional large umbrella consumes more force in unfolding and folding processes, and is not convenient in use.The large umbrella comprises an umbrella middle bar, an inner middle bar, an upper hub, a middle hub, a lower hub, a long frame, a support frame and a link rod. The large umbrella is characterized inthat the lower hub is fixedly connected with the umbrella middle bar; the middle hub is movably jointed with the umbrella middle bar; a connecting seat is movably jointed on a position, below the lower hub, on the umbrella middle bar; a lower pull rod is connected between the connecting seat and the middle hub; and a locking part in match locking with the umbrella middle bar is arranged on the connecting seat. By utilizing the large umbrella, the acting force in an umbrella unfolding process is lightened, and the mode of pulling down the umbrella is more labor-saving and more convenient than the traditional mode of pushing upward the umbrella; the acting forces required by umbrella unfolding and folding processes are basically equal, so the umbrella is unfolded and folded at a uniform velocity in the unfolding or folding process, and the influence to people or objects around is avoided.
Description
technical field [0001] The invention relates to the technical field of umbrellas for sunshade and rain protection, in particular to the technical field of large-scale beach umbrellas. Background technique [0002] At present, there are mainly two types of umbrellas used for sunshade and rain protection on the market, one is portable and the other is fixed. Portable umbrellas are generally small in size and lightweight in consideration of the convenience of carrying around; while fixed umbrellas, such as: beach umbrellas, advertising umbrellas and other large umbrellas, are relatively bulky and relatively bulky, and are generally fixed outdoors for sunshade Or shelter from the rain, in order to facilitate storage, or to avoid aging due to sun exposure when not in use, or to avoid being damaged by strong winds at night, the fixed umbrella is also opened and folded, due to its large size and cumbersome, It takes a lot of effort to complete the operation. In addition, because t...
Claims
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IPC IPC(8): A45B25/14A45B25/00A45B9/00
Inventor马准胜
Owner张容