Folding mechanism of table and chair frame
By incorporating arc grooves and locking holes into the table and chair frame, combined with sliding rods and elastic elements, the automatic locking and unlocking of the table and chair frame is achieved, solving the problem of cumbersome operation in existing technologies and improving the user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG ONETIME LEISURE PROD CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-04-28
AI Technical Summary
Existing folding table and chair frames require manual alignment of the pins and holes when unlocking and locking, which is cumbersome and results in a poor user experience.
The system employs a connection structure between the first and second tubes. By setting an arc groove and a locking hole on the second tube, combined with a sliding rod and an elastic element, the locking part of the sliding rod automatically enters or disengages from the locking hole under the drive of the elastic element, thereby achieving automatic locking and unlocking.
The process has been simplified, the folding time has been reduced, and the user experience has been improved.
Smart Images
Figure CN224165912U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of table and chair frame technology, and in particular to a folding mechanism for a table and chair frame. Background Technology
[0002] Foldable tables and chairs are widely used in homes, offices, and outdoor settings due to their ease of storage and transportation. As the core component of foldable tables and chairs, the rationality of their structural design directly affects the product's stability, ease of operation, and lifespan.
[0003] Existing folding table and chair frames typically use hinges and pins for fixing. However, these conventional folding table and chair frames require manual alignment of the pins and holes when unlocking and locking, which is cumbersome and results in a poor user experience. Therefore, the purpose of this application is to solve the above problems.
[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 folding mechanism for a table and chair frame to solve one of the aforementioned technical problems.
[0006] The technical solution adopted by this application to solve its technical problem is a folding mechanism for a table and chair frame, comprising: a first tube, on one side of which a connecting frame is provided; a second tube, rotatably mounted on the connecting frame, with arc grooves formed on both sides of the connecting frame about the rotation axis of the second tube, wherein one or both ends of one side of the arc groove are extended with locking holes; and a sliding rod, slidably mounted on the second tube, comprising a locking part, a sliding part, and an elastic element. The sliding part slides within the arc groove, and the elastic element drives the locking part to always move towards the locking hole. When the sliding part reaches the position of the locking hole, the elastic element drives the locking part into the locking hole, fixing the angle between the first tube and the second tube in the current state. The locking part is disengaged from the locking hole by pressing or pulling one end of the sliding rod to unlock the mechanism.
[0007] In some embodiments, the second tube has a rotating hole and a sliding hole on both sides, the second tube is rotatably mounted on the connecting frame with the rotating hole as the axis, and the sliding rod is slidably mounted in the sliding hole.
[0008] In some embodiments, the sliding rod further includes a limiting boss disposed on one side of the elastic element.
[0009] In some embodiments, the elastic element is a spring, with one side abutting against the limiting boss and the other side abutting against the inner wall of the second tube.
[0010] In some embodiments, the elastic element is disposed on one side of the limiting boss and the locking part, and the limiting boss and the locking part are integral, and a tapered transition surface is formed between the locking part and the sliding part.
[0011] In some embodiments, the elastic element is disposed between the limiting boss and the locking portion, the locking portion is disposed at the end of the sliding portion, and a tapered transition surface is formed between the locking portion and the sliding portion.
[0012] In some embodiments, a cap is provided at one rotatable end of the second tube.
[0013] In some embodiments, an operating element is connected to the end of the sliding rod for applying an unlocking force.
[0014] The beneficial effects of this application are as follows: when the locking part is not inserted into the locking hole, the first tube and the second tube can rotate freely until they are rotated to the position where the locking hole is located. The elastic element can drive the locking part to partially enter the locking hole, so that the first tube and the second tube cannot be disengaged from the locking hole by rotation. When unlocking is required, the locking part can be disengaged from the locking hole by pressing or pulling the operating member, thus achieving the unlocking effect. No additional steps are required, reducing the operation time of folding. Attached Figure Description
[0015] 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.
[0016] Figure 1 This is a schematic diagram illustrating the usage status of this application.
[0017] Figure 2 yes Figure 1 A magnified view of part A.
[0018] Figure 3 This is a schematic diagram of the folded state of the first and second rods in this application.
[0019] Figure 4 yes Figure 3 A schematic diagram of the explosion state.
[0020] Figure 5 This is a cross-sectional view of the sliding rod in the sliding state of this application.
[0021] Figure 6 This is a cross-sectional schematic diagram of the first embodiment of the sliding rod locking state in this application.
[0022] Figure 7 This is a cross-sectional schematic diagram of the second embodiment of the sliding rod locking state in this application.
[0023] Explanation of reference numerals in the attached drawings: 1. First tube; 11. Connecting frame; 111. Arc groove; 112. Locking hole; 2. Second tube; 21. Rotating hole; 22. Sliding hole; 23. Tube cap; 3. Sliding rod; 31. Locking part; 311. Conical transition surface; 32. Sliding part; 33. Elastic element; 34. Limiting boss; 35. Operating component. Detailed Implementation
[0024] 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.
[0025] In the embodiments of this application, please refer to Figure 1-7 As shown, this application provides a folding mechanism for a table and chair frame, mainly comprising: a first tube 1, with a connecting frame 11 on one side of the first tube 1; a second tube 2, rotatably mounted on the connecting frame 11, with arc grooves 111 formed on both sides of the connecting frame 11 about the rotation axis of the second tube 2, wherein one or both ends of one side of the arc groove 111 are extended with locking holes 112; and a sliding rod 3, slidably mounted on the second tube 2, including a locking part 31, a sliding part 32, and an elastic element 33. The sliding part 32 slides within the arc groove 111, and the elastic element 33 drives the locking part 31 to always move towards the locking hole 112. When the sliding part 32 reaches the position of the locking hole 112 during sliding, the elastic element 33 drives the locking part 31 into the locking hole 112, fixing the angle between the first tube 1 and the second tube 2 in the current state. The locking part 31 is disengaged from the locking hole 112 by pressing or pulling one end of the sliding rod 3 to unlock the mechanism.
[0026] Specifically, the angle range of the arc groove 111 is the angle range in which the second tube 2 can rotate relative to the connecting frame 11. If the locking part 31 does not enter the locking hole 112 in the initial state, the second tube 2 can rotate freely. If the locking part 31 enters the locking hole 112 in the initial state, the elastic element 33 always drives the locking part 31 to move closer to the locking hole 112. Therefore, it is difficult to achieve the locking effect by rotating the second tube 2 to make the locking part 31 disengage from the locking hole 112.
[0027] 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.
[0028] Reference Figure 3 As shown, the second tube 2 has a rotating hole 21 and a sliding hole 22 on both sides. The second tube 2 is rotatably mounted on the connecting frame 11 with the rotating hole 21 as the axis. The sliding rod 3 is slidably mounted in the sliding hole 22.
[0029] Specifically, in order to provide a leverage point for the elastic element 33 to drive the locking part 31, the sliding rod 3 further includes a limiting boss 34, which is disposed on one side of the elastic element 33. The elastic element 33 is a spring, with one side abutting against the limiting boss 34 and the other side abutting against the inner wall of the second tube 2.
[0030] As a first embodiment, it can be referred to Figure 5 and 6 As shown, the elastic element 33 is disposed on one side of the limiting boss 34 and the locking part 31, and the limiting boss 34 and the locking part 31 are integral. A conical transition surface 311 is formed between the locking part 31 and the sliding part 32. In the unlocked state, the sliding part 32 slides in the arc groove 111. Under the action of the conical transition surface 311, the sliding part 32 cannot be driven into the arc groove 111 by the elastic element 33 until it enters the range of the locking hole 112. A part of the conical transition surface 311 will enter the locking hole 112 to form a lock until the sliding rod 3 is pulled away from the side of the sliding part 32.
[0031] As a second embodiment, it can be referred to Figure 5 and 7As shown, the elastic element 33 is disposed between the limiting boss 34 and the locking part 31. The locking part 31 is disposed at the end of the sliding part 32. A tapered transition surface 311 is formed between the locking part 31 and the sliding part 32. In the unlocked state, the sliding part 32 slides in the arc groove 111. Under the action of the tapered transition surface 311, the sliding part 32 cannot be driven into the arc groove 111 by the elastic element 33 until it enters the range of the locking hole 112. A part of the tapered transition surface 311 will enter the locking hole 112 to form a lock until the sliding rod 3 is pressed away from the side of the sliding part 32.
[0032] Both embodiments change the way force is applied by changing the position where the elastic element 33 is placed.
[0033] Preferably, in order to prevent the sliding structure from being exposed and reduce dust accumulation, a tube cap 23 is provided at one rotating end of the second tube 2.
[0034] Preferably, in order to provide the user with a force-applying medium and make the sliding rod 3 unlock more smoothly, the end of the sliding rod 3 is connected to an operating element 35 for applying an external force to unlock.
[0035] 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.
[0036] 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 folding mechanism for a table and chair frame, characterized in that, include: The first tube has a connecting frame on one side; The second tube is rotatably mounted on the connecting frame, and arc grooves are formed on both sides of the connecting frame with the rotation axis of the second tube as the center. One or both ends of one side of the arc groove are extended with locking holes. A sliding rod, slidably mounted on the second tube, includes a locking part, a sliding part, and an elastic element. The sliding part slides within the arc groove, and the elastic element drives the locking part to move towards the locking hole. When the sliding part reaches the locking hole position, the elastic element drives the locking part into the locking hole, fixing the angle between the first tube and the second tube in the current state. The locking part is disengaged from the locking hole by pressing or pulling one end of the sliding rod to unlock the tube.
2. The folding mechanism for a table and chair frame according to claim 1, characterized in that, The second tube has a rotating hole and a sliding hole on both sides. The second tube is rotatably mounted on the connecting frame with the rotating hole as the axis, and the sliding rod is slidably mounted in the sliding hole.
3. The folding mechanism for a table and chair frame according to claim 1, characterized in that, The sliding rod also includes a limiting boss, which is disposed on one side of the elastic element.
4. The folding mechanism for a table and chair frame according to claim 3, characterized in that, The elastic element is a spring, with one side abutting against the limiting protrusion and the other side abutting against the inner wall of the second tube.
5. The folding mechanism for a table and chair frame according to claim 4, characterized in that, The elastic element is disposed on one side of the limiting boss and the locking part, and the limiting boss and the locking part are integral, and a tapered transition surface is formed between the locking part and the sliding part.
6. The folding mechanism for a table and chair frame according to claim 4, characterized in that, The elastic element is disposed between the limiting boss and the locking part, the locking part is disposed at the end of the sliding part, and a tapered transition surface is formed between the locking part and the sliding part.
7. The folding mechanism for a table and chair frame according to claim 1, characterized in that, A cap is provided at the rotating end of the second tube.
8. The folding mechanism for a table and chair frame according to claim 1, characterized in that, An operating element is connected to the end of the sliding rod for applying an unlocking force.