Mechanism
The procedure for unfolding and folding the umbrella depends primarily on the type of mechanism.
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Mechanical. The simplest option, which involves unfolding and folding solely due to the efforts of the user himself — in other words, you will have to manually move the slider along the central rod every time. Such a scheme of operation is not as convenient as automated options, however, it provides simplicity and reliability of the design, and it is cheaper.
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Semi -automatic. The name of this option is due to the fact that only one of the two actions is automated in it — disclosure; you have to fold the umbrella manually. Usually, to open, it is enough to press a button — and a special spring will bring the product into working position. Such umbrellas are easier and more convenient to use than mechanical ones — in particular, they open somewhat faster, which is especially important when exposed to heavy rain; at the same time, they are cheaper and more reliable than full automatic machines (although they still lose to them in terms of convenience).
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Automatic. In such models, both basic actions are automated: at the touch of a button, both the unfolding and folding of the umbrella occur. However it is worth noting that folding is most often not fully automated — usually the frame is only folded, and the telescopic rod has to be “squeezed” manual
...ly. However, this is the most user-friendly option, requiring the least amount of effort from the user. The downside of such a mechanism is its complexity, high cost, and less reliability than others.Length (folded)
The length of the umbrella when folded. For the decomposed one, this parameter is not specified, because is not critical, but when transporting a closed umbrella, it is the length that is the most important dimension.
The length of cane umbrellas (see "Type") is, by definition, the same when open or closed; most often it is 60 – 90% of the dome diameter (see above). But folding models of the same diameter can vary markedly in length, and here the choice depends on the situation: on the one hand, more compact umbrellas are more convenient to carry, on the other hand, they are less reliable and more complex in design, and also cost more.
Weight
Total weight of the umbrella.
All other things being equal,
lighter umbrellas are more convenient to carry (both in the open and closed positions). On the other hand, such products are less reliable and/or more expensive than relatively heavy models of similar design and size. We also note that in some cases, significant weight can be an advantage. For example, in a strong wind, a massive umbrella does not “tear from your hands” as much, and when released, it does not fly as far as a lighter one.
