What is the most common reason automatic opening and closing umbrellas "break"?

When getting in and out of a car on a rainy day, or when your hands are full with luggage. With just one push of a button, it opens with a "pop," and with another push, it closes with a "swish." Automatic open/close umbrellas are incredibly smart tools for today's busy lives. However, we sometimes receive inquiries about these convenient tools "suddenly stopping working."

The truth is, many of the reasons why automatic open/close umbrellas stop functioning are not due to a malfunction, but rather to the strain placed on the mechanism by "habitual operation."

The unknown role of the "close button"

You might be surprised, but some users of automatic open/close umbrellas are unaware that they should "use the button to close it as well."

"I thought you used the button to open it, but to close it, you pulled it down by hand, just like a regular manual umbrella."

We had a customer who told us that in the past. For those of us who have long been accustomed to manual folding umbrellas, the action of pulling down the "runner," where the umbrella ribs gather, may be an unconscious habit. However, with automatic open/close umbrellas, this unconscious action can lead to unexpected problems.

The role of "high-strength fiber" supporting the interior

Generally speaking, the mechanism of an automatic open/close umbrella has a complex structure. A strong spring is built into the central pole (shaft), and inside that, very strong and thin strings called "high-strength polyethylene fibers" are stretched.

When you press the button, this strong string and spring work together, transmitting force to close the umbrella. However, if you pull the "runner" directly by hand without using the button, the tension of the string, which should be taut, loosens, and the string gets tangled in the internal mechanism.

Once the string gets tangled, it is extremely difficult to disassemble and repair. This is the definitive reason why automatic open/close umbrellas may stop responding when you press the button or open and close smoothly.

Preventing "invisible malfunctions"

The difficult thing about handling automatic open/close umbrellas is that immediately after forcibly closing them by hand, there is no visible abnormality. The ribs are not broken, nor is the fabric torn. The appearance remains pristine, yet only the internal opening and closing mechanism is damaged. Therefore, when you try to use it again, it doesn't work, and it's easy to wonder "why did it break?"

The key to a long and pleasant relationship with your automatic open/close umbrella is very simple:

  1. Always use the "button" to both open and close it.

  2. Only use your hand to push the central pole all the way in with a click after the umbrella has collapsed with the button.

As long as you follow these rules, you can enjoy its convenience for a long time without damaging the internal mechanism.

[View AMVEL's Automatic Open/Close Umbrella Lineup]

Additionally, as a side note, there's something users of models with a "pop-up prevention feature (safety mechanism)" should know. This type of umbrella is designed not to open when the button is pressed again unless the central pole is pushed all the way in until it "clicks" and locks into its final position when storing it. It won't operate if it's stopped midway, so there are cases where people mistakenly assume it's broken, but it returns to normal operation once pushed all the way in.

Understanding a little bit about how your tools work and operating them accordingly – that small effort will transform your rainy-day companion into a reliable presence for even longer.


アンベル株式会社 CEO

執筆者:辻野義宏

30年以上に渡って傘の開発および研究を続けている。革新的な機能を追求し続ける日本の傘ブランド「AMVEL (アンベル) 」では、時代によって変化するベストを追求し、最先端の技術を駆使した傘をお届けしています。