Supporting frame easy to fold
By designing the rotating structure of the external and internal cross connectors, the problem of the complexity and large size of the existing folding frame structure is solved, achieving the effect of easy folding and unfolding, simplifying the operation process and improving space utilization.
Patent Information
- Application Number
- CN202520194961.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-02-08
AI Technical Summary
Existing folding frame structures are complex and have a large volume after folding, making it difficult to simplify the folding process while reducing the number of parts.
The design employs two external cross connectors and two internal cross connectors, allowing for folding and unfolding through rotation. The internal cross connectors include a ball cap and a connecting block, while the external cross connectors have a connecting hole in the center, and the internal cross connectors can be fitted with a pin in the center, simplifying the conversion process.
It enables simple folding and unfolding with only a few parts, reducing the number of parts, simplifying the operation process, and improving space utilization.
Smart Images
Figure CN223614437U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of support frame technology, and in particular to a simple folding support frame. Background Technology
[0002] In the prior art, such as the folding moon chair proposed in application number 2023214047811, the support and folding are achieved by means of a central hub, the overall structure is relatively complex, and the volume is still large after folding.
[0003] Therefore, the purpose of this application is to simplify the folding process while minimizing the number of parts.
[0004] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is the closest prior art to this application. Summary of the Invention
[0005] Based on this, this application provides a simple folding support frame to solve one of the above-mentioned technical problems.
[0006] The technical solution adopted by this application to solve its technical problem is a simple folding support frame, including: two external cross connectors that can be rotatably arranged relative to each other and two internal cross connectors that can be rotatably arranged relative to each other; the external cross connectors have a connection hole in the center and first rods on both sides of the external cross connectors; the internal cross connectors include a spherical crown and two connecting blocks, the connecting blocks are disposed on the flat surface of the spherical crown and a second rod is disposed on the connecting blocks, the two spherical crowns can be combined to form a near-spherical shape and rotated and locked in the connection hole; the external cross connectors and internal cross connectors can be rotated to expand into a folded state and an unfolded state.
[0007] In some embodiments, the external cross connector has a generally Z-shaped profile and two first bends, with the four first rods parallel to each other in the folded state.
[0008] In some embodiments, the inner cross connector has a generally Z-shaped profile and two second bends, with the four second rods parallel to each other in the folded state.
[0009] In some embodiments, the connecting block includes an abutment surface, which, in the folded state, abuts against the abutment surface of another inner cross connector.
[0010] In some embodiments, in the unfolded state, the two connecting blocks are engaged on both sides of the outer edge of the connecting hole.
[0011] In some embodiments, the center of the inner cross connector has a circular hole for installing a pin to connect two inner cross connectors.
[0012] The beneficial effects of this application are as follows: This application completes the overall folding and unfolding by using only two inner cross connectors and two outer cross connectors. The fewer parts make the conversion between the folded and unfolded states extremely simple, which can be completed by simply rotating the inner cross connectors and the outer cross connectors. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of the folded three-dimensional structure of this application.
[0015] Figure 2 This is a schematic diagram of the unfolded three-dimensional structure of this application.
[0016] Figure 3 This is a cross-sectional view of the cross connector in its folded state according to this application.
[0017] Explanation of reference numerals: 1. External cross connector; 11. First rod; 12. Connecting hole; 13. First bend; 2. Internal cross connector; 21. Second rod; 22. Ball cap; 23. Connecting block; 24. Second bend; 25. Abutment surface; 26. Round hole. Detailed Implementation
[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. In addition, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those of ordinary skill in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection of this application.
[0019] In the embodiments of this application, please refer to Figure 1-3As shown, this application provides a simple folding support frame that can be applied to various products, such as folding tables, folding chairs, display racks, and barbecue grills. The support frame mainly includes: two external cross connectors 1 that can be rotatably arranged relative to each other and two internal cross connectors 2 that can be rotatably arranged relative to each other; the external cross connectors 1 have a connection hole 12 at their center, and first rods 11 are provided on both sides of the external cross connectors 1; the internal cross connectors 2 include a spherical crown 22 and two connecting blocks 23, the connecting blocks 23 being disposed on the flat surface of the spherical crown 22 and having second rods 21 on them; the two spherical crowns 22 can be combined to form a near-spherical shape and rotated and engaged within the connection hole 12; the external cross connectors 1 and internal cross connectors 2 can be rotated to expand into a folded state and an unfolded state.
[0020] Specifically, when the outer cross connector 1 and the inner cross connector 2 are in the folded state, the four first rods 11 and the four second rods 21 are combined together in pairs and are parallel to each other; when the outer cross connector 1 and the inner cross connector 2 are in the unfolded state, the four first rods 11 and the four second rods 21 are separated together in pairs until the ends of the first rods 11 and the second rods 21 located below form four legs for use.
[0021] For illustration, when the inner cross connector 2 is joined, its outline is approximately spherical, and a partial space is formed between the two spherical crowns 22 for the connecting block 23 to rotate and engage. Simultaneously, the space formed between the two spherical crowns 22 allows for a snap-fit engagement with the inner wall of the connecting hole 12, making it difficult for the inner cross connector 2 to detach from the outer cross connector 1. Preferably, a groove can be formed in the connecting hole 12 to engage with the outer edge of the spherical crowns 22 to further enhance the connection strength.
[0022] The following will continue to describe some preferred / improved embodiments based on the above embodiments. Any one of the following embodiments can be selected, or multiple embodiments can be combined.
[0023] Preferably, the outer cross connector 1 has a generally Z-shaped profile and two first bends 13, with the four first rods 11 parallel to each other in the folded state. In some embodiments, the inner cross connector 2 has a generally Z-shaped profile and two second bends 24, with the four second rods 21 parallel to each other in the folded state. The first bends 13 and the second bends 24 enable the outer cross connector 1 and the inner cross connector 2 to maintain a small volume in the folded state, increasing space utilization.
[0024] Reference Figure 3As shown, in order to reduce the volume occupied in the folded state, the connecting block 23 includes an abutment surface 25. In the folded state, the abutment surface 25 is in contact with the abutment surface 25 of another inner cross connector 2.
[0025] Reference Figure 1 As shown, in the unfolded state, the two connecting blocks 23 are snapped onto both sides of the outer edge of the connecting hole 12. This arrangement allows the inner cross connector 2 and the outer cross connector 1 to distribute the pressure applied from above, increasing the connection strength.
[0026] Specifically, in order to enable the inner cross connectors 2 to rotate relative to each other, the center of the inner cross connector 2 is provided with a circular hole 26 for installing a pin to connect the two inner cross connectors 2.
[0027] The various embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.
[0028] Finally, it should be noted that the above description is only a preferred embodiment of this application. The foregoing embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A simple folding support frame, characterized in that, It includes two external cross connectors that can be rotated relative to each other and two internal cross connectors that can be rotated relative to each other; The external cross connector has a connection hole in the center and first rods on both sides of the external cross connector; The inner cross connector includes a spherical crown and two connecting blocks. The connecting blocks are disposed on the flat surface of the spherical crown and a second rod is provided on the connecting blocks. The two spherical crowns can be combined to form an almost spherical shape and rotated and snapped into place in the connecting hole. The external cross connector and the internal cross connector can be rotated to expand into a folded state and an unfolded state.
2. The simple folding support frame according to claim 1, characterized in that, The outer cross connector has a roughly Z-shaped profile and two first bends. In the folded state, the four first rods are parallel to each other.
3. The simple folding support frame according to claim 1, characterized in that, The inner cross connector has a roughly Z-shaped profile and two second bends. In the folded state, the four second rods are parallel to each other.
4. A simple folding support frame according to claim 1, characterized in that, The connecting block includes an abutting surface, which, in the folded state, is in contact with the abutting surface of another inner cross connector.
5. A simple folding support frame according to claim 1, characterized in that, In the unfolded state, the two connecting blocks are engaged with the two sides of the outer edge of the connecting hole.
6. A simple folding support frame according to claim 1, characterized in that, The center of the inner cross connector has a circular hole for installing a pin to connect two inner cross connectors.