Built-in umbrella frame structure that allows for reduced volume
The built-in umbrella rib structure with a sliding groove and pressing part addresses the issues of excessive volume and high costs by enabling volume reduction and cost-effective production without fabric damage.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2026-02-04
- Publication Date
- 2026-04-02
AI Technical Summary
Conventional umbrella rib structures suffer from excessive volume and high production costs due to the use of stopper sleeves and rivets, which can catch umbrella cloth and cause thread breakage.
A built-in umbrella rib structure with a hollow groove and a pressing part that allows the connecting bone to slide, reducing volume and eliminating the need for external structures, thus lowering production costs and preventing fabric damage.
The solution effectively reduces umbrella rib volume and production costs while ensuring smooth operation and preventing fabric damage, without using external components that could catch threads.
Smart Images
Figure 0003255357000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of umbrella rib technology, and particularly to a built-in umbrella rib structure that can reduce its volume.
Background Art
[0002] The umbrella rib body of a multi-fold umbrella includes umbrella ribs and connecting bones. In order to reduce the volume of the umbrella rib body and improve the smoothness during the opening and closing of the umbrella, in the conventional technology, the middle section of the connecting bone is made close to the umbrella rib. The umbrella rib proposed in Chinese Patent Application No. "CN202010838582.6" makes the second tension bone (connecting bone) close to the third main bone (umbrella rib) by means of a provided stopper sleeve.
[0003] However, in the above conventional structure, the middle part of the umbrella rib body becomes thick due to the stopper sleeve, resulting in an excessive volume. If the riveting method with holes is adopted, it will not only increase the production cost, but also the rivet is likely to catch the umbrella cloth and cause thread breakage.
Summary of the Invention
Problems to be Solved by the Invention
[0004] The purpose of the present invention is to propose a built-in umbrella rib structure that can reduce its volume in order to solve the disadvantages of excessive volume and high cost existing in the conventional technology.
Means for Solving the Problems
[0005] To achieve the above object, the present invention adopts the following technical solutions to design a built-in umbrella rib structure that can reduce its volume. It includes umbrella ribs and connecting bones. A hollow groove is opened on one side of the umbrella rib, and the connecting bone is slidable inside the hollow groove. A pressing part is press-formed at the opening of the hollow groove, and the pressing part can limit the middle part of the connecting bone within the hollow groove.
[0006] Preferably, the pressing part is recessed towards the inside of the hollow groove.
[0007] Preferably, a compression spring is slidably fitted onto the outer circumference of the connecting bone, and the compression spring is fixed inside the groove by pressure from the pressing part.
[0008] Preferably, the pressing portion protrudes outward from the groove, a compression spring is slidably fitted onto the outer circumference of the connecting bone, and the compression spring is fitted into the recessed groove of the pressing portion.
[0009] Preferably, the press portion protrudes outward from the groove, a sleeve is slidably fitted onto the outer circumference of the connecting bone, and the sleeve is fitted into the recessed groove of the press portion.
[0010] Preferably, the press portion is opened on one side within the groove.
[0011] Preferably, the press portion is opened on both sides inside the groove. [Effects of the Invention]
[0012] The internal umbrella rib structure, which allows for volume reduction according to this invention, has the following beneficial effects: A groove is opened on one side of the umbrella rib, allowing the connecting rib to slide locally within the groove. A pressed section is formed at the opening of the groove by pressing, which narrows the opening at that point in the groove, further restricting the connecting rib within the groove. This method does not require the use of an external structure, reduces the volume of the umbrella rib, and since the structure can be realized by pressing, it reduces production costs, and there are no sharp protrusions on the surface of the umbrella rib, preventing threads from getting caught in the umbrella fabric. [Brief explanation of the drawing]
[0013] [Figure 1] This is a schematic diagram of the three-dimensional structure of Example 2. [Figure 2] This is a schematic diagram of the cross-sectional structure of Example 2. [Figure 3] This is a schematic diagram of the three-dimensional structure of Example 3. [Figure 4]It is a schematic cross-sectional structure diagram of Example 3. [Figure 5] It is a schematic three-dimensional structure diagram of Example 4. [Figure 6] It is a schematic cross-sectional structure diagram of Example 4. [Figure 7] It is a schematic cross-sectional structure diagram having a compression spring in Example 2. [Figure 8] It is a schematic combined structure diagram of a rib and a connecting bone.
Mode for Carrying Out the Invention
[0014] Hereinafter, in combination with the drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clarified and fully described. Of course, the described embodiments are only some embodiments of the present invention, not all embodiments.
[0015] Example 1
[0016] Referring to FIGS. 1-8, it is a built-in rib structure capable of reducing volume, comprising a rib 1 and a connecting bone 3. An empty groove 2 is opened on one side of the rib 1, and the connecting bone 3 is slidable inside the empty groove 2. A pressed part 4 is formed by pressing at the opening of the empty groove 2, and the pressed part 4 can limit the middle part of the connecting bone 3 inside the empty groove 2.
[0017] Furthermore, the pressed part 4 is opened on one side inside the empty groove 2.
[0018] Furthermore, the pressed part 4 is opened on both sides inside the empty groove 2.
[0019] Operating principle: By pressing and forming the pressed part 4 in a section area at the opening of the empty groove 2, the opening of the corresponding location of the empty groove 2 is narrowed, the opening diameter of the corresponding location is smaller than the outer diameter of the connecting bone 3, the connecting bone 3 cannot penetrate, and further the connecting bone 3 is restricted inside the empty groove 2 and can slide freely, avoiding reducing the strength of the rib 1 by drilling or increasing the volume of the rib 1 by a fixing sleeve.
[0020] Example 2
[0021] It is a realization structure of the feasible press part 4. Referring to FIGS. 1 and 2, the press part 4 is recessed inside the empty groove 2.
[0022] Furthermore, a compression spring 6 is slidably externally fitted on the outer periphery of the connecting bone 3, and the compression spring 6 is fixed inside the empty groove 2 by the pressing of the press part 4.
[0023] Operating principle: In this embodiment, only the press part 4 can realize the limit of the connecting bone 3, reducing the production cost. The press part 4 should be close to the opening of the empty groove 2, so that the connecting bone 3 can ensure sufficient space to slide inside the empty groove 2.
[0024] Furthermore, the compression spring 6 may be fixed by the pressing of the press part 4 which is recessed towards the inside of the empty groove 2, and the compression spring 6 is used as the sliding passage of the connecting bone 3.
[0025] Example 3
[0026] It is a realization structure of the feasible press part 4. Referring to FIGS. 3 and 4, the press part 4 protrudes towards the outside of the empty groove 2, and a compression spring 6 is slidably externally fitted on the outer periphery of the connecting bone 3, and the compression spring 6 is fitted into the concave groove of the press part 4.
[0027] Operating principle: In this embodiment, in order to improve the smoothness of the sliding of the connecting bone 3 inside the empty groove 2, a compression spring 6 is externally fitted on the outer periphery of the connecting bone 3, and the compression spring 6 is restricted inside the empty groove 2 by the press part 4, so that the compression spring 6 is used as the sliding passage of the connecting bone 3. When the connecting bone 3 slides inside the compression spring 6, the middle part of the connecting bone 3 is restricted inside the empty groove 2, so that the connecting bone 3 undergoes elastic deformation to form warping. Both ends of the compression spring 6 contact the connecting bone 3 to cause elastic deformation. Due to the elastic deformation ability of the compression spring 6, the contact strength between both ends of the compression spring 6 and the connecting bone 3 is reduced, and furthermore, the frictional wear between the connecting bone 3 and the compression spring 6 is reduced.
[0028] Example 4
[0029] A feasible implementation structure for the press section 4, referring to Figures 5 and 6, wherein the press section 4 protrudes outward from the groove 2, a sleeve 5 is slidably fitted onto the outer circumference of the connecting bone 3, and the sleeve 5 is fitted into the recessed groove of the press section 4.
[0030] Operating principle: In this embodiment, compared to embodiment 3, the compression spring 6 is replaced with a sleeve 5 to reduce costs, but the contact strength between both ends of the sleeve 5 and the connecting bone 3 is increased.
[0031] As described above, these are preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art will know that any equivalent substitution or modification made based on the technical means and concept of the present invention within the technical scope disclosed herein falls within the scope of protection of the present invention. [Explanation of Symbols]
[0032] 1. Umbrella ribs, 2. Hollow groove, 3. Connecting ribs, 4. Pressed section, 5. Sleeve, 6. Compression spring.
Claims
1. An internal umbrella frame structure that can reduce the volume, comprising an umbrella rib (1) and a connecting rib (3), wherein a cavity (2) is made on one side of the umbrella rib (1), the connecting rib (3) is slidable inside the cavity (2), a pressed portion (4) is formed in the opening of the cavity (2) by pressing, and the pressed portion (4) can restrict the middle part of the connecting rib (3) to be inside the cavity (2).
2. The internal umbrella rib structure according to claim 1, characterized in that the press portion (4) is recessed inside the groove (2).
3. The internal umbrella rib structure according to claim 1, characterized in that a compression spring (6) is slidably fitted onto the outer circumference of the connecting rib (3), and the compression spring (6) is fixed inside the groove (2) by pressing with the press part (4).
4. The internal umbrella rib structure according to claim 1, characterized in that the press portion (4) protrudes outward toward the outside of the hollow groove (2), a compression spring (6) is slidably fitted onto the outer circumference of the connecting rib (3), and the compression spring (6) is fitted into the recessed groove of the press portion (4).
5. The internal umbrella rib structure according to claim 1, characterized in that the press portion (4) protrudes outward toward the outside of the hollow groove (2), a sleeve (5) is slidably fitted onto the outer circumference of the connecting rib (3), and the sleeve (5) is fitted into the recessed groove of the press portion (4).
6. The built-in umbrella rib structure that can reduce volume, as described in any one of claims 2 to 5, characterized in that the press portion (4) is opened on one side inside the groove (2).
7. The built-in umbrella rib structure that can reduce volume, as described in any one of claims 2 to 5, characterized in that the press portion (4) is opened on both sides inside the cavity (2).