Bow spring of a folded umbrella
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The present invention relates to a bow spring of a folded umbrella, which includes an improved bow spring having a short length and a side coil spring being received in upper tube of the umbrella. The coil spring can provide elastic force to push the engaging end of the bow spring outward to position the umbrella opening. The length of the tube and the umbrella can be effectively decreased that obtains improvement for easy carry.

Ko, Chin Sung (Changhua Shien, TW)
Application Number:
Publication Date:
Filing Date:
Primary Class:
International Classes:
A45B25/08; A45B19/04; (IPC1-7): A45B25/12
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Primary Examiner:
Attorney, Agent or Firm:
1. (Canceled).

2. The bow spring for a folding umbrella as claimed in claim 3, wherein the main bow spring member and the spring member are received in a connector received in said upper tube of the folding umbrella.

3. A bow spring for a folding umbrella comprising: a main bow spring member having first and second opposing ends, and a spring recess being formed in a central shaft thereof, said first end being pivotally connected to an inner wall of an upper tube of said folding umbrella, said second end retractably projecting through a slot formed through said upper tube; and, a spring member being received within said spring recess and biasing said main bow spring member against said inner wall of said upper tube, whereby a runner of said folding umbrella is selectively locked in place when said second end of said main bow spring projects through said slot.



[0001] The present invention relates to a bow spring of a folded umbrella, which has a short total length for easy carry.


[0002] An important objective of a folded umbrella is to decrease its total length when the umbrella is closed for easy carry. For example, a conventional folded umbrella, as shown in FIG. 1, has several tubes, which can be received one by one as closing. A bow spring (1) must be provided in the upper tube (2) for positioning a runner to maintain the umbrella at opening state. This known bow spring (1) is usually made of metal and has a lower bow portion (11) for providing elastic force to push its upper engaging end (12) outward for use. Under the basic structure, the tube (2) has a certain length because the length of the bow spring (1) can not be decreased effectively. So the length of the folded umbrella can not be effectively decreased neither.

[0003] Accordingly, the primary object of the invention is to provide a folded umbrella, which has a short bow spring provided in the upper tube (2) of the shaft. The length of the upper tube as well as the folded umbrella will be then decreased effectively.


[0004] Now the features and advantages of the present invention will be described in detail with reference to the accompanying drawings.

[0005] FIG. 1 is a cross-sectional plan view of a conventional folded umbrella showing its shaft and a prior bow spring.

[0006] FIG. 2 is a cross-sectional plan view showing a shaft and a bow spring according to the present invention.

[0007] FIG. 3 is a perspective view showing parts of FIG. 2 of the present invention.

[0008] FIG. 4 is an exploded perspective view showing the bow spring apparatus according to the present invention.


[0009] Please referring to FIG. 2 to 4, the present invention relates to an improvement for a bow spring of a folded umbrella, wherein the bow spring (3) is provided in an upper tube (2) of a shaft of the umbrella. The bow spring (3) of the present invention having a short length is provided with a side coil spring (31). This coil spring provides elastic force to push upper engaging end (33) extending outward from a slot (21) of the upper tube (2) to position a runner and to keep the umbrella opening. For convenient assembly, the bow spring (3) and the coil spring (31) of the present invention can be received in a connector (32) and then assembled in the upper tube (2).

[0010] According to the description above, the present invention being special designed provides an improvement in decreasing the length of the bow spring, the upper tube, and the folded umbrella when closing. Hence, the umbrella can be carried more convenient for users.