Folding mechanism and folding table and chair
By improving the folding mechanism, using a lever locking mechanism and magnetic self-locking, the problems of large thickness, large shaking, high noise, and cumbersome unlocking of foldable small tables have been solved, thus improving stability and portability.
Patent Information
- Application Number
- CN202520139088.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-21
AI Technical Summary
Existing foldable tables are too thick, have a lot of wobbling and play, are noisy, are cumbersome to unlock, and lack a self-locking function, which affects portability, stability, and user comfort.
The device employs a folding mechanism, including a fixed bracket, a movable bracket, a diagonal brace, an elastic tension element, a lever locking mechanism, a magnet, and an elastic reset element. The lever locking mechanism locks the device by pushing against the slide bar in the unfolded state, and the magnet locks it by adsorbing it in the folded state, thus achieving self-locking and improved stability.
It improves stability when unfolded and reduces the thickness to less than 13mm when folded. It has a self-locking function, simplifies the unlocking operation, and facilitates storage and transportation.
Smart Images
Figure CN223830545U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hardware accessories technology, specifically to a folding mechanism and folding tables and chairs. Background Technology
[0002] In modern life, foldable tables are widely used in many scenarios such as homes, offices, and travel due to their convenience and flexibility, providing great convenience to people. However, the foldable tables commonly used in the market currently have some problems with their support structure that urgently need to be solved.
[0003] First, existing foldable tables are generally too thick, typically exceeding 16mm. This excessive thickness not only takes up considerable space when stored, hindering space conservation, but also adds unnecessary burden during transport, reducing the product's portability.
[0004] Secondly, the small tabletop wobbles considerably when set up, and generates a lot of noise and interference. This not only affects the user's stability experience during use, but the significant noise and interference can also disrupt the user's environment, reducing user comfort.
[0005] Furthermore, the existing unlocking mechanism is located inside the small table, which requires users to spend more time and effort to find and operate the unlocking position, making the process more cumbersome and reducing user efficiency.
[0006] Finally, the tabletop lacks a self-locking function when folded up. Under slight external force or vibration, the tabletop may spring back up, which could not only damage the tabletop itself but also pose a potential safety threat to surrounding items and people. Utility Model Content
[0007] In view of this, the present invention proposes a folding mechanism to improve the convenience of unlocking the folding mechanism.
[0008] To achieve the above objectives, the present invention adopts the following technical solution:
[0009] A folding mechanism includes: a fixed bracket fixed to the main body of a folding table and chair; a movable bracket fixed to the side panel of the folding table and chair, wherein a first end of the movable bracket is hinged to a first end of the fixed bracket, and the movable bracket has a sliding groove extending along its length; a diagonal support bracket, wherein a first end of the diagonal support bracket is hinged to a second end of the fixed bracket, and a sliding rod is provided on the second end of the diagonal support bracket, the sliding rod being slidably disposed in the sliding groove, the diagonal support bracket slidingly driving the movable bracket to rotate, thereby switching the position of the movable bracket in the folded state with its upper part placed inside the fixed bracket and in the unfolded state perpendicular to the fixed bracket; and an elastic tension element, wherein a first end is fixedly connected to the first end of the fixed bracket, and a second end is fixedly connected to the second end of the diagonal support bracket, the elastic tension element being stretched / reset as the diagonal support bracket rotates;
[0010] A lever locking mechanism is hinged within a movable bracket. The first end of the lever locking mechanism is used to push against the locking / unlocking slide bar, and the second end forms a pressing end. An elastic reset element is disposed within the movable bracket. The first end of the elastic reset element is connected to the inner side of the movable bracket, and the second end is connected to the first end of the lever locking mechanism. A magnet is fixed within a fixed bracket and near its second end. The movable bracket is provided with a magnetic attraction part that magnetically engages with the magnet.
[0011] To better achieve the above technical solution, optionally, the slide groove is provided with a notch section on the side opposite to the movable support.
[0012] Optionally, a lever locking plate is eccentrically hinged within a movable bracket, with a pushing part at its long arm end for pushing against the locking / unlocking slide bar. The second end of the elastic reset element is connected to the long arm side of the lever locking plate. A pressing plate is also eccentrically hinged within the movable bracket, with its short arm end pressing against the short arm end of the lever locking plate. Its long arm end is provided with a pressing part, which causes the lever locking plate to move by pressing the pressing part, thereby achieving the locking or unlocking operation of the slide bar.
[0013] Optionally, the elastic reset element is a compression spring, and a guide rod is fixed inside the movable bracket and fitted inside the first end of the compression spring.
[0014] Optionally, the fixed bracket has at least two first mounting holes spaced apart, and the movable bracket has at least two second mounting holes spaced apart.
[0015] A folding table and chair includes a main body and at least one side panel, wherein the main body and the side panel are connected by a folding mechanism as described in any one of the above.
[0016] The beneficial effects of this utility model are:
[0017] The folding mechanism of this utility model has the following characteristics: when the folding mechanism is in the unfolded state, the first end of the lever locking mechanism has a pushing and locking effect on the slide rod, which can improve the stability of the folding mechanism in the unfolded state; when the folding mechanism is in the closed state, the magnet is attracted to the magnetic suction part, so that the movable bracket and the fixed bracket are locked to each other, which can improve the stability of the folding mechanism in the closed state. Since the movable bracket, the diagonal support bracket and the elastic tension element are stacked together when the folding mechanism is in the closed state, the overall thickness of the folding mechanism can be reduced to within 13mm. At the same time, since a self-locking mechanism is set in both the unfolded and closed states, external force is required to unfold and close, thereby increasing the stability of the folding mechanism in the two different states. Furthermore, the pressing part controlled by the pressing lever is located on the table leg or chair leg, which is convenient to unlock.
[0018] The folding table and chair of this utility model make full use of the characteristics of the folding mechanism, making the unlocking operation more convenient, and significantly reducing the overall volume in the folded state, making it easy to store and transport. Attached Figure Description
[0019] Figure 1 This is a front view of a folding mechanism according to Embodiment 1 of this utility model (the folding mechanism is in the unfolded state);
[0020] Figure 2 yes Figure 1 A three-dimensional schematic diagram;
[0021] Figure 3 yes Figure 2 Exploded view;
[0022] Figure 4 This is a front view of a folding mechanism according to Embodiment 1 of this utility model (the folding mechanism is in the folded state);
[0023] Figure 5 yes Figure 4 Exploded view;
[0024] Figure 6 This is a front view of a folding table and chair according to Embodiment 2 of this utility model (the folding mechanism is in the unfolded state);
[0025] Figure 7 This is a front view of a folding table and chair according to Embodiment 2 of this utility model (the folding mechanism is in the folded state);
[0026] Figure label:
[0027] Folding mechanism 100, fixed bracket 110, first connecting shaft 111, second connecting shaft 112, first mounting hole 113, movable bracket 120, slide groove 121, notch section 122, third connecting shaft 123, fourth connecting shaft 124, elastic reset element 125, guide rod 126, second mounting hole 127, diagonal brace 130, elastic tension element 140, lever locking plate 150, pushing part 151, pressing plate 160, magnet 170, slide rod 180, main body 200, side plate 300. Detailed Implementation
[0028] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. Identical components are indicated by the same reference numerals.
[0029] Example 1
[0030] Please see Figures 1 to 5 This utility model discloses a folding mechanism 100, which includes a fixed bracket 110, a movable bracket 120, a diagonal brace bracket 130, an elastic tension element 140, a lever locking mechanism, an elastic reset element 125, and a magnet 170.
[0031] like Figures 1-3 As shown, the fixing bracket 110 is fixed on the main body 200 of the folding table and chair. Specifically, when the folding table and chair is a table, the fixing bracket 110 is fixed on the bottom surface of the tabletop, and when the folding table and chair is a chair, the fixing bracket 110 is fixed on the bottom surface of the chair.
[0032] The movable support 120 is fixed to the side panel 300 of the folding table and chair. The first end of the movable support 120 is hinged to the first end of the fixed support 110. The movable support 120 has a slide groove 121 extending along its length. Specifically, when the folding table and chair is a table, the movable support 120 is fixed to the upper side of the table leg / table side panel. When the folding table and chair is a chair, the movable support 120 is fixed to the upper side of the chair leg / chair side panel. The upper end of the movable support 120 is hinged to the end of the fixed support 110 near the tabletop through a first connecting shaft 111. More specifically, the width of the movable support 120 is smaller than the width of the fixed support 110, so that the upper part of the movable support 120 can be folded into the fixed support 110.
[0033] like Figure 2 As shown, the first end of the diagonal brace 130 is hinged to the second end of the fixed bracket 110. The second end of the diagonal brace 130 is provided with a slide rod 180. The slide rod 180 is slidably disposed in the slide groove 121. The diagonal brace 130 slides in the slide groove 121 along the length direction, causing the movable bracket 120 to rotate, so that the movable bracket 120 switches between the position of the upper part of the movable bracket 120 placed in the fixed bracket 110 in the folded state and the position of the movable bracket 120 perpendicular to the fixed bracket 110 in the unfolded state.
[0034] Specifically, the first end of the diagonal brace 130 is hinged to the end of the fixed bracket 110 away from the edge of the folding table and chair via the second connecting shaft 112. The slide rod 180 slides in the slide groove 121, driving the movable bracket 120 to rotate, thereby enabling the movable bracket 120 to rotate to the position of its upper part within the fixed bracket 110 or to be perpendicular to the fixed bracket 110. The length of the slide groove 121 meets the requirement of the movable bracket 120 rotating 90° relative to the fixed bracket 110. This structure is based on mature technology and has high stability.
[0035] like Figures 1 to 3 As shown, the first end of the elastic tension element 140 is fixedly connected to the first end of the fixed bracket 110, and the second end of the elastic tension element 140 is fixedly connected to the second end of the inclined support bracket 130. The elastic tension element 140 is stretched / reset as the inclined support bracket 130 rotates.
[0036] Specifically, the elastic tension element 140 is preferably a tension spring, which is used when the folding mechanism 100 is in the unfolded state (e.g., Figure 1 As shown), the movable bracket 120 is perpendicular to the fixed bracket 110, and the elastic tension element 140 is in the reset state; when the folding mechanism 100 is in the folded state (as shown), the movable bracket 120 is perpendicular to the fixed bracket 110, and the elastic tension element 140 is in the reset state; Figure 4 and Figure 5 As shown, the movable bracket 120 is parallel to the fixed bracket 110, and the elastic tension element 140 is in a stretched state.
[0037] like Figure 1 As shown, the lever locking mechanism is hinged within the movable bracket 120. The first end of the lever locking mechanism is used to push against the locking / unlocking slide bar 180, and the second end of the lever locking mechanism forms a pressing end. The movable bracket 120 is provided with an elastic reset element 125. The first end of the elastic reset element 125 is connected to the inner side of the movable bracket 120, and the second end is connected to the first end of the lever locking mechanism.
[0038] Specifically, the middle part of the lever locking mechanism is hinged to the movable bracket 120 via the third connecting shaft 123. When the folding mechanism 100 is in the unfolded state, the first end of the lever locking mechanism pushes against the locking slide bar 180, so that the slide bar 180 is located in the end of the slide groove 121 near the first connecting shaft 111. When the folding mechanism 100 is in the retracted state, the first end of the lever locking mechanism disengages from the slide bar 180, and the slide bar 180 slides to the end of the slide groove 121 away from the first connecting shaft 111. The first end of the lever locking mechanism and the slide bar 180 do not interfere with each other.
[0039] A magnet 170 is fixedly installed inside the fixed bracket 110 and near the second connecting shaft 112, and the movable bracket 120 is provided with a magnetic attraction part that magnetically engages with the magnet 170. Specifically, the movable bracket 120 is an integral sheet metal part, and the magnetic attraction part is a part of the sheet metal part.
[0040] The working principle of a folding mechanism 100 according to an embodiment of this utility model is as follows:
[0041] like Figure 1 As shown, the folding mechanism 100 is in the unfolded state, the movable bracket 120 is perpendicular to the fixed bracket 110, the elastic tension element 140 is in the reset state, the slide bar 180 is located in the end of the slide groove 121 near the first connecting shaft 111, and the first end of the lever locking mechanism pushes against and locks the slide bar 180, so that the folding mechanism 100 has better stability in the unfolded state.
[0042] like Figure 1 , Figure 2 and Figure 4 As shown, when transitioning from the unfolded state to the retracted state, the second end of the lever locking mechanism is pressed towards the movable bracket 120, and the first end of the lever locking mechanism rotates inward into the movable bracket 120 and disengages from the slide rod 180. Under the action of external force, the movable bracket 120 is rotated clockwise, and the slide rod 180 moves inward into the end of the slide groove 121 away from the first connecting shaft 111 under the pushing action of the inclined support bracket 130. When the slide rod 180 is located in the end of the slide groove 121 away from the first connecting shaft 111, the elastic tension element 140 is in a stretched state. At this time, the upper part of the movable bracket 120 is located in the fixed bracket 110, and the magnet 170 is attracted to the magnetic suction part, so that the movable bracket 120 and the fixed bracket 110 are locked together.
[0043] When transitioning from the folded state to the unfolded state, the movable bracket 120 is rotated counterclockwise with the aid of external force, and the magnet 170 and the magnetic attraction part separate from each other. At this time, under the reset action of the elastic tension element 140, the slide rod 180 moves into the end of the slide groove 121 near the first connecting shaft 111 and pushes the first end of the lever locking mechanism to rotate into the movable bracket 120. After the slide rod 180 passes the first end of the lever locking mechanism, the first end of the lever locking mechanism returns to its original position under the reset action of the elastic tension element 140 and abuts against the slide rod 180.
[0044] In this embodiment of the utility model, the folding mechanism 100, when in the unfolded state, has a first end of the lever locking mechanism that pushes and locks against the slide rod 180, which can improve the stability of the folding mechanism 100 in the unfolded state. When the folding mechanism 100 is in the folded state, the magnet 170 is attracted to the magnetic attraction part, locking the movable bracket 120 and the fixed bracket 110 together, which can improve the stability of the folding mechanism 100 in the folded state. Since the movable bracket 120, the inclined support bracket 130 and the elastic tension element 140 are stacked together when the folding mechanism 100 is in the folded state, the overall thickness of the folding mechanism 100 can be reduced, so that the thickness of the folding mechanism 100 in the folded state is less than 13mm. At the same time, since a self-locking mechanism is provided in both the unfolded and folded states, external force is required to unfold and fold, thereby increasing the stability of the folding mechanism 100 in the two different states. Furthermore, the pressing part controlled by the pressing lever is located on the table leg or chair leg, which is convenient to unlock.
[0045] In an embodiment of this utility model, the slide 121 includes a notch 122 on the side opposite to the movable bracket 120, and the notch 122 facilitates assembly and maintenance operations.
[0046] In an embodiment of this utility model, the lever locking mechanism includes a lever locking plate 150 and a pressing plate 160. The lever locking plate 150 is eccentrically hinged within the movable bracket 120. Specifically, the lever locking plate 150 is hinged within the movable bracket 120 via a third connecting shaft 123. The long arm end of the lever locking plate 150 is provided with a pushing part 151, which is actually the first end of the lever locking mechanism. The pushing part 151 has a hook structure and is used to push the locking / unlocking slide bar 180. When the folding structure is in the unfolded state, the hook-structured pushing part 151 pushes the slide bar 180. When the folding mechanism 100 changes from the closed state to the unfolded state, the slide bar 180 slides and presses the pushing part 151 to rotate, thereby causing the slide bar 180 to quickly slide into the end of the slide groove 121 near the first connecting shaft 111. The pressing plate 160 is eccentrically hinged inside the movable bracket 120. The short arm end of the pressing plate 160 presses against the short arm end of the lever locking plate 150. The long arm end of the lever locking plate 150 is provided with a pressing part, which is actually the second end of the lever locking mechanism.
[0047] In an embodiment of this utility model, the elastic reset element 125 is a compression spring. The second end of the elastic reset element 125 is connected to the long arm side of the lever lock plate 150. A guide rod 126 is fixed inside the movable bracket 120 and is sleeved inside the first end of the compression spring. The guide rod 126 can guide the compression direction when the compression spring is compressed, so that the elastic reset element 125 can be compressed in a preset direction.
[0048] In an embodiment of this utility model, the fixed bracket 110 is provided with at least two first mounting holes 113 spaced apart, and the movable bracket 120 is provided with at least two second mounting holes 127 spaced apart. The fixed bracket 110 can be fixed to the main body 200 of the folding table and chair by screws passing through the first mounting holes 113, and the movable bracket 120 can be fixed to the side panel 300 of the folding table and chair by screws passing through the second mounting holes 127. Specifically, there are at least three first mounting holes 113 and at least three second mounting holes 127.
[0049] Example 2
[0050] like Figure 6 and Figure 7 As shown, this utility model discloses a folding table and chair, including a main body 200 and at least one side panel 300. The main body 200 and the side panel 300 are connected by the folding mechanism 100 of Embodiment 1. Specifically, each side panel 300 is connected to the main body 200 via a folding mechanism 100 spaced apart, ensuring the stability and reliability of the folding table and chair. This folding table and chair fully utilizes the characteristics of the folding mechanism 100, making unlocking operations more convenient, and significantly reducing the overall volume in the folded state, facilitating storage and transportation.
[0051] The technical solution of this utility model has been described in detail above with reference to specific embodiments. The specific embodiments described are used to help understand the concept of this utility model. Derivations and modifications made by those skilled in the art based on the specific embodiments of this utility model also fall within the protection scope of this utility model.
Claims
1. A folding mechanism (100), characterized in that, include: A fixed bracket (110) is fixed to the main body (200) of the folding table and chair; A movable support (120) is fixed to the side panel (300) of the folding table and chair. The first end of the movable support (120) is hinged to the first end of the fixed support (110). The movable support (120) has a groove (121) extending along its length. A diagonal brace (130) is provided. The first end of the diagonal brace (130) is hinged to the second end of the fixed bracket (110). A slide rod (180) is provided on the second end of the diagonal brace (130). The slide rod (180) is slidably disposed in the slide groove (121). The diagonal brace (130) slides and drives the movable bracket (120) to rotate, so that the movable bracket (120) switches between a folded state in which the upper part is placed in the fixed bracket (110) and an unfolded state in which it is perpendicular to the fixed bracket (110). The elastic tension element (140) has its first end fixedly connected to the first end of the fixed bracket (110) and its second end fixedly connected to the second end of the diagonal brace (130). The elastic tension element (140) is stretched / reset as the diagonal brace (130) rotates. A lever locking mechanism is hinged within a movable bracket (120). The first end of the lever locking mechanism is used to push against the locking / unlocking slide bar (180), and the second end forms a pressing end. An elastic reset element (125) is disposed inside the movable bracket (120). The first end of the elastic reset element (125) is connected to the inner side of the movable bracket (120), and the second end is connected to the first end of the lever locking mechanism. And a magnet (170), fixed inside the fixed bracket (110) and close to its second end, the movable bracket (120) is provided with a magnetic attraction part that magnetically engages with the magnet (170).
2. The folding mechanism (100) according to claim 1, characterized in that, The slide (121) has a notch (122) on the side opposite to the movable bracket (120).
3. The folding mechanism (100) according to claim 1, characterized in that, The lever locking mechanism includes: The lever locking plate (150) is eccentrically hinged in the movable bracket (120), and its long arm end is provided with a pushing part (151). The pushing part (151) is used to push the locking / unlocking slide bar (180). The second end of the elastic reset element (125) is connected to the long arm side of the lever locking plate (150). And a pressing plate (160), which is eccentrically hinged in the movable bracket (120), with its short arm end pressing against the short arm end of the lever locking plate (150), and its long arm end having a pressing part. By pressing the pressing part, the lever locking plate (150) is moved to realize the locking or unlocking operation of the slide bar (180).
4. The folding mechanism (100) according to claim 1, characterized in that, The elastic reset element (125) is a compression spring, and the movable bracket (120) is fixedly provided with a guide rod (126) that is sleeved inside the first end of the compression spring.
5. A folding mechanism (100) according to claim 1, characterized in that, The fixed bracket (110) is provided with at least two first mounting holes (113) spaced apart, and the movable bracket (120) is provided with at least two second mounting holes (127) spaced apart.
6. A folding table and chairs, characterized in that, It includes a main body (200) and at least one side plate (300), the main body (200) and the side plate (300) being connected by a folding mechanism (100) as described in any one of claims 1 to 5.