Folding supporting structure

Abstract

The utility model discloses a folding supporting structure which comprises two supporting rod bodies arranged in parallel in a spaced mode in the first direction, the top ends of the two supporting rod bodies are suitable for being rotationally connected to an external pipe fitting, and a folding assembly is connected between the two supporting rod bodies. The supporting rod bodies can rotate from the unfolding position to the folding position relative to the outer pipe fitting in the second direction so as to drive the folding assembly to rotate from the unfolding state to the folding state, when the folding assembly is in the unfolding state, the two supporting rod bodies are away from each other in the first direction to be unfolded, and when the folding assembly is in the folding state. The two supporting rod bodies are attached to each other and folded in the first direction, that is, the two supporting rod bodies can be attached to each other and folded in the first direction while the supporting rod bodies are rotated and folded in the second direction, so that the folding and unfolding operation of the folding supporting structure is simplified, the folding supporting structure is small in size after being folded, the occupied space for storage and transportation is reduced, and the folding supporting structure is convenient to use. The carrying is convenient.

Description

Technical Field

[0001] This application relates to the field of daily household goods, specifically to a folding support structure. Background Technology

[0002] Folding tables, as a type of furniture that combines practicality and convenience, are widely used in daily life and office settings. One of their core components is the folding support structure, the design and performance of which directly affects the user experience and stability of the folding table. Existing folding tables have relatively simple folding support structures, mostly using a single hinge connection or folding rod structure. While these structures can achieve basic folding functionality, they present numerous problems during use.

[0003] For example, some folding support structures are not smooth enough during folding and unfolding, requiring users to exert considerable force to complete the task. This is especially true for folding tables with thicker tabletops, where users must overcome both the weight of the tabletop and the frictional resistance between the folding support structures, making it difficult to unfold the table independently, especially for users with less strength. In addition, some folding support structures are unstable during use and are prone to wobbling, affecting the user experience. Summary of the Invention

[0004] One objective of this application is to provide a folding support structure that is smaller in size when folded and is very convenient and quick to fold and unfold.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a folding support structure, comprising two support rods arranged parallel to each other along a first direction, the top ends of the two support rods being rotatably connected to an external pipe, and a folding assembly connected between the two support rods. The support rods can rotate relative to the external pipe along a second direction from an unfolded position to a folded position to drive the folding assembly to rotate from an unfolded state to a folded state. When the folding assembly is in the unfolded state, the two support rods are unfolded away from each other in the first direction. When the folding assembly is in the folded state, the two support rods are folded together close to each other in the first direction. Wherein, the first direction and the second direction are two mutually perpendicular directions in the horizontal plane.

[0006] As a preferred embodiment, the folding assembly includes two folding rods, with one end of each folding rod hinged to the other. The other end of each folding rod is rotatably provided with a first connector and rotatably connected to an external tube through the first connector. A linkage rod for connecting to the support rod body is also rotatably provided on each folding rod. One end of the linkage rod is hinged to the middle of the folding rod, and the other end of the linkage rod is rotatably provided with a second connector and rotatably connected to the support rod body through the second connector.

[0007] As another preferred embodiment, the first connector includes a first vertical plate and a first horizontal plate, the first vertical plate being vertically disposed on the first horizontal plate, such that the first connector is L-shaped, the first vertical plate being adapted to be hinged to an external pipe fitting, and the first horizontal plate being hinged to the folding rod.

[0008] Further preferably, the second connecting member includes a second vertical plate and a second horizontal plate, the second vertical plate being vertically disposed on the second horizontal plate, such that the second connecting member is L-shaped, the second vertical plate being hinged to the support rod body, and the second horizontal plate being hinged to the linkage rod.

[0009] Furthermore, a limiting component is connected between the two support rods. The limiting component includes two limiting rods, with one end of the two limiting rods hinged to each other and the other end of the two limiting rods respectively hinged to the two support rods. The two limiting rods can be rotated to a locked position to abut against the two support rods in the first direction, thereby restricting the two support rods from folding or closing in the first direction.

[0010] Furthermore, a third connector is connected between the two limiting rods. The third connector includes two third hinge seats, which are respectively fixedly disposed on the opposite ends of the two limiting rods and hinged to each other. Each third hinge seat has an abutting end face, and the abutting end faces of the two third hinge seats are adapted to abut against each other when the two limiting rods are rotated to the locked position to restrict the two limiting rods to the locked position.

[0011] Furthermore, the support rod includes an upper rod and a retractable lower rod inserted into the upper rod. A locking component is provided at the connection between the upper rod and the lower rod, and the locking component is adapted to lock or unlock the upper rod and the lower rod.

[0012] Furthermore, the locking assembly includes a locking seat sleeved on the upper rod and the lower rod, an unlocking button movably disposed on the locking seat, an elastic element for resetting disposed between the unlocking button and the locking seat, a locking rack disposed on the end face of the lower rod opposite to the unlocking button, the locking rack having a plurality of toothed grooves arranged along its length, the unlocking button having locking teeth that engage with the toothed grooves, the unlocking button being able to be pressed or released to disengage or engage the locking teeth in the toothed grooves to unlock or lock the upper rod and the lower rod.

[0013] Furthermore, the tooth groove includes a guide end face near the top of the lower rod and a locking end face near the bottom of the lower rod. The locking tooth is adapted to engage with the locking end face to restrict the sliding of the lower rod, so that the lower rod can only slide away from the upper rod when it is not unlocked.

[0014] Furthermore, a limiting end cap is provided at the top of the lower rod, which is adapted to abut against the locking seat when the lower rod slides to its maximum stroke, so as to restrict the lower rod from sliding away from the upper rod.

[0015] Compared with the prior art, the beneficial effects of this application are as follows:

[0016] The folding support structure provided in this application is simple and quick to fold and unfold. While the support rods rotate and fold in the second direction, the two support rods can also be folded together in the first direction, saving time and effort. The folded support structure is also small in size. When the two support rods are in contact with each other, the folding component and the limiting component are also folded between the two support rods. The entire folding support structure is long and narrow, which is convenient for users to carry and store. The unfolded folding support structure has good stability. The folding rod, the linkage rod and the support rod form a triangular stable moment, and it is not easy to change from the unfolded state to the folded state during use. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the folding table support frame of this application when unfolded.

[0018] Figure 2 This is a three-dimensional structural diagram of the folding table support frame of this application when folded.

[0019] Figure 3 This is a schematic diagram showing the interaction between the folding component, the tabletop rod, and the support rod in the folding support structure of this application.

[0020] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0021] Figure 5 This is a schematic diagram of the folding rod and the cover in the folding support structure of this application.

[0022] Figure 6 This is a schematic diagram of the support rod and locking assembly in the folding support structure of this application.

[0023] Figure 7 This is a cross-sectional schematic diagram of the support rod and locking assembly in the folding support structure of this application.

[0024] Figure 8 for Figure 7 A magnified view of a portion of point B in the middle.

[0025] Figure 9 This is a schematic diagram showing the cooperation between the limiting component and the support rod in the folding support structure of this application.

[0026] Figure 10 This is a schematic diagram of the folding support structure of this application when the two limiting rods are in the folded position.

[0027] Figure 11 This is a schematic diagram of the folding support structure of this application when the two limiting rods are in the unfolded position.

[0028] Figure 12 This is a schematic diagram of the folding support structure of this application when the two limiting rods are in the locked position.

[0029] Figure 13 This is a schematic diagram of the first hole spacing m, the second hole spacing n, the third hole spacing a, and the fourth hole spacing b.

[0030] In the diagram: 100, desktop rod; 200, support rod body; 210, abutment end cap; 220, upper rod body; 230, lower rod body; 240, locking rack; 250, tooth groove; 251, guide end face; 252, locking end face; 260, limit end cap; 300, folding assembly; 310, folding rod; 320, first connector; 321, first vertical plate; 322, first horizontal plate; 330, linkage rod. 340, Second connecting piece; 341, Second vertical plate; 342, Second horizontal plate; 350, End cap; 400, Rod connecting piece; 410, Hinge part; 420, Fixed part; 500, Locking assembly; 510, Locking seat; 520, Unlocking button; 530, Elastic element; 540, Locking tooth; 600, Limiting assembly; 610, Limiting rod; 620, Third connecting piece; 621, Third hinge seat. Detailed Implementation

[0031] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0032] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0033] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0034] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0035] This application provides a folding support structure that can be applied to folding tables or chairs to support the tabletop or chair surface. For example... Figure 1-2 As shown, the folding support structure is connected to the desktop rod 100 and assembled into a folding table frame.

[0036] like Figure 1-5 As shown, the folding table support specifically includes two parallel and spaced-apart tabletop rods 100. The folding support structure includes two parallel and spaced-apart support rods 200. The top ends of the two support rods 200 are rotatably connected to the corresponding tabletop rods 100. A folding assembly 300 is connected between the two support rods 200. The folding assembly 300 includes two folding rods 310. The opposite ends of the two folding rods 310 are hinged to each other. The other ends of the two folding rods 310 are rotatably provided with a first connector 320 and are rotatably connected to the tabletop rods 100 through the first connector 320. Each folding rod 310 is rotatably provided with a linkage rod 330 for connecting to the corresponding support rod 200. One end of the linkage rod 330 is hinged to the middle of the folding rod 310. The other end of the linkage rod 330 is rotatably provided with a second connector 340 and is rotatably connected to the corresponding support rod 200 through the second connector 340.

[0037] The support rod 200 can rotate relative to the desktop rod 100 from the unfolded position to the folded position along the second direction. During the rotation of the support rod 200, the folding rod 310 can be rotated through the linkage rod 330, thereby causing the folding assembly 300 to rotate from the unfolded state to the folded state. When the folding assembly 300 is in the unfolded state, the two folding rods 310 are joined end to end, causing the two desktop rods 100 and the two support rods 200 set on the two desktop rods 100 to move away from each other. When the folding assembly 300 is in the folded state, the two folding rods 310 are arranged side by side, causing the two desktop rods 100 and the two support rods 200 set on the two desktop rods 100 to fold together. In other words, the folding and unfolding of the support rod 200 in one direction can cause the folding support structure and the folding table frame to fold and unfold in two directions, greatly simplifying the folding and unfolding operation of the folding support structure and the folding table frame, making it convenient for a single user to operate. In addition, the folded folding support structure and the folding table frame are small in size, reducing the space required for storage and transportation, making them easy for users to carry and move.

[0038] It is worth mentioning that the first direction and the second direction are two mutually perpendicular directions in the horizontal plane.

[0039] Further, the first connector 320 is used to connect the folding rod 310 and the desktop rod 100. The first connector 320 includes a first vertical plate 321 and a first horizontal plate 322 integrally formed and connected. The first vertical plate 321 and the first horizontal plate 322 are arranged perpendicularly to each other, making the first connector 320 L-shaped. The first vertical plate 321 is attached to the end face of the desktop rod 100 and hinged to the desktop rod 100, while the first horizontal plate 322 is hinged to the end of the folding rod 310. The second connector 340 is used to connect the linkage rod 330 and the support rod 200. The second connector 340 includes a second vertical plate 341 and a second horizontal plate 342 integrally formed and connected. The second vertical plate 341 and the second horizontal plate 342 are arranged perpendicularly to each other, making the second connector 340 L-shaped. The second vertical plate 341 is attached to the end face of the support rod 200 and hinged to the support rod 200, while the second horizontal plate 342 is hinged to the end of the linkage rod 330. The arrangement of the first connector 320 and the second connector 340 allows the folding rod 310 and the linkage rod 330 to rotate relative to the tabletop rod 100 and the support rod 200 in two directional dimensions, respectively, so that the displacement of the support rod 200 in the second direction can be converted into the displacement of the two tabletop rods 100 and the two support rods 200 in the first direction.

[0040] In some preferred embodiments, a cover 350 is also provided on the end of the folding rod 310 that is hinged to the first horizontal plate 322. The cover 350 has an abutting surface, which is adapted to abut against the first vertical plate 321 when the folding rod 310 is rotated to the maximum unfolded position to limit the further rotation of the folding rod 310, prevent the folding rod 310 from rotating too far, and improve the structural stability of the folding support structure.

[0041] Furthermore, such as Figure 1-3 as well as Figure 6 As shown, the support rod 200 is rotatably connected to the desktop rod 100 via the rod connector 400. Specifically, the rod connector 400 includes a hinge portion 410 hinged to the desktop rod 100 and a fixed portion 420 fixedly connected to the support rod 200. The top end of the support rod 200 is also provided with an abutment end cap 210, which is adapted to abut against the bottom end surface of the desktop rod 100 when the support rod 200 is in the unfolded position to restrict further rotation of the support rod 200. The support rod 200 in the unfolded position forms an angle with the desktop rod 100, the angle being between 90° and 150°. In the embodiment illustrated in this application, the support rod 200 in the unfolded position forms a 93° angle with the desktop rod 100, thereby making the desktop rod 100, the two support rods 200, and the placement plane form a trapezoidal structure, improving the support stability of the support rod 200.

[0042] like Figure 13 As shown, the distance between the hinge point of the first vertical plate 321 on the tabletop rod 100 and the hinge point of the hinge part 410 on the tabletop rod 100 is the first hole distance m; the distance between the hinge point of the hinge part 410 on the tabletop rod 100 and the hinge point of the second vertical plate 341 on the support rod 200 is the second hole distance n; the distance between the hinge point of the folding rod 310 on the first horizontal plate 322 and the hinge point of the linkage rod 330 on the folding rod 310 is the third hole distance a; and the distance between the hinge point of the linkage rod 330 on the folding rod 310 and the hinge point of the linkage rod 330 on the second horizontal plate 342 is the fourth hole distance b. The sum of the third hole distance a and the fourth hole distance b is not greater than the sum of the first hole distance m and the second hole distance n, that is, a+b≤m+n. Based on the relationship between the hole spacings mentioned above, when the folding support structure is unfolded, the support rod 200, the folding rod 310 and the linkage rod 330 can form a triangular stabilizing moment, which improves the stability of the folding support structure and also prevents the linkage rod 330 from pushing the folding rod 310 too far and causing damage.

[0043] like Figure 6-8As shown, the support rod 200 includes an upper rod 220 and a lower rod 230 inserted into the upper rod 220 and retractable. A locking component 500 is provided at the connection between the upper rod 220 and the lower rod 230. The locking component 500 is suitable for locking or unlocking the upper rod 220 and the lower rod 230. The locking assembly 500 includes a locking seat 510 sleeved on the upper rod 220 and the lower rod 230. An unlocking button 520 is movably disposed on the locking seat 510. An elastic element 530 is disposed between the unlocking button 520 and the locking seat 510. The elastic element 530 is adapted to reset the unlocking button 520 after the external force acting on the unlocking button 520 is removed. A locking rack 240 is disposed on the end face of the lower rod 230 opposite to the unlocking button 520. The locking rack 240 is provided with a plurality of tooth grooves 250 arranged along its length direction. The opening of the tooth grooves 250 faces the side opposite to the unlocking button 520. The unlocking button 520 is provided with locking teeth 540 that cooperate with the tooth grooves 250. The unlocking button 520 can be pressed or released to disengage or engage the locking teeth 540 in the tooth grooves 250 to unlock or lock the upper rod 220 and the lower rod 230. Specifically, when the unlock button 520 is pressed, the locking teeth 540 on the unlock button 520 move away from the locking rack 240 and disengage from the tooth groove 250, releasing the lock on the upper rod 220 and the lower rod 230. The lower rod 230 can slide freely relative to the upper rod 220. When the unlock button 520 is released, the elastic element 530 pushes the unlock button 520 back to its original position. The locking teeth 540 on the unlock button 520 move closer to the locking rack 240 and embed into the tooth groove 250, locking the upper rod 220 and the lower rod 230. The lower rod 230 cannot slide relative to the upper rod 220.

[0044] like Figure 7 As shown, a limiting end cap 260 is also provided at the top of the lower rod 230. The limiting end cap 260 is adapted to abut against the locking seat 510 when the lower rod 230 slides to its maximum stroke, thereby limiting the lower rod 230 from sliding further relative to the upper rod 220 after reaching its maximum stroke, and preventing the lower rod 230 from sliding away from the upper rod 220.

[0045] In some preferred embodiments, the tooth groove 250 has a guide end face 251 near the top of the lower rod 230 and a locking end face 252 near the bottom of the lower rod 230. The guide end face 251 is inclined upward, and the locking end face 252 is perpendicular to the locking rack 240. The locking tooth 540 can slide with the guide end face 251 and abut with the locking end face 252. Thus, the locking tooth 540 can only slide unidirectionally along the guide end face 251. That is, when the lower rod 230 is not unlocked, it can only extend away from the upper rod 220 relative to the upper rod 220, and cannot retract towards the upper rod 220 relative to the upper rod 220.

[0046] Furthermore, such as Figure 9-12 As shown, a limiting component 600 is also connected between the two support rods 200. The limiting component 600 includes two limiting rods 610. The opposite ends of the two limiting rods 610 are hinged to each other, and the other ends of the two limiting rods 610 are respectively hinged to the locking seats 510 of the two support rods 200. The two limiting rods 610 can be rotated to a folded position, an unfolded position, and a locked position. The two limiting rods 610 in the folded and unfolded positions are in an unlocked state, and the two limiting rods 610 in the locked position are in a locked state. The two limiting rods 610 in the locked state can abut against and limit the two support rods 200 and the two tabletop rods 100 in the first direction, so that the two support rods 200 and the two tabletop rods 100 cannot be folded or closed in the first direction. The two limiting rods 610 are connected by a third connector 620. The third connector 620 includes two third hinge seats 621. The two third hinge seats 621 are respectively fixedly disposed on the ends of the two limiting rods 610 on opposite sides and hinged to each other. The third hinge seat 621 has an abutting end face. The abutting end faces of the two third hinge seats 621 are adapted to abut against each other when the two limiting rods 610 are rotated to the locked position, so as to restrict the two limiting rods 610 to the locked position.

[0047] The two limiting rods 610 in the unlocked state have a downward-opening V-shaped structure. The two limiting rods 610 can rotate to a folded or unfolded position as the support rod 200 retracts and unfolds. In the unfolded position, the two limiting rods 610 can be further rotated downwards to a locked position, thus entering a locked state. In the locked state, the two limiting rods 610 have an upward-opening V-shaped structure. At this time, because the contact surfaces of the two third hinge seats 621 abut against each other, the two limiting rods 610 in the locked state cannot rotate further downwards. Furthermore, during use, the two limiting rods 610 must be manually rotated upwards to unlock, thus restricting the two support rods 200 and the two tabletop rods 100 from folding together in the first direction, preventing the folding support structure from folding during use.

[0048] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A folding support structure, characterized in that, The device includes two support rods spaced parallel to each other along a first direction. The top ends of the two support rods are rotatably connected to an external pipe. A folding assembly is connected between the two support rods. The support rods can rotate relative to the external pipe along a second direction from an unfolded position to a folded position to drive the folding assembly to rotate from an unfolded state to a folded state. When the folding assembly is in the unfolded state, the two support rods are unfolded away from each other in the first direction. When the folding assembly is in the folded state, the two support rods are folded together close to each other in the first direction. Wherein, the first direction and the second direction are two mutually perpendicular directions in the horizontal plane.

2. The folding support structure as described in claim 1, characterized in that, The folding assembly includes two folding rods, with one end of each folding rod hinged to the other. The other end of each folding rod is rotatably provided with a first connector and rotatably connected to an external tube through the first connector. A linkage rod for connecting to the support rod body is also rotatably provided on each folding rod. One end of the linkage rod is hinged to the middle of the folding rod, and the other end of the linkage rod is rotatably provided with a second connector and rotatably connected to the support rod body through the second connector.

3. The folding support structure as described in claim 2, characterized in that, The first connector includes a first vertical plate and a first horizontal plate. The first vertical plate is vertically disposed on the first horizontal plate, making the first connector L-shaped. The first vertical plate is adapted to be hinged to an external pipe fitting, and the first horizontal plate is hinged to the folding rod.

4. The folding support structure as described in claim 2, characterized in that, The second connecting member includes a second vertical plate and a second horizontal plate. The second vertical plate is vertically disposed on the second horizontal plate, making the second connecting member L-shaped. The second vertical plate is hinged to the support rod, and the second horizontal plate is hinged to the linkage rod.

5. The folding support structure as described in any one of claims 1-4, characterized in that, A limiting component is also connected between the two support rods. The limiting component includes two limiting rods. The opposite ends of the two limiting rods are hinged to each other, and the other ends of the two limiting rods are respectively hinged to the two support rods. The two limiting rods can be rotated to a locking position to abut against the two support rods in the first direction, thereby restricting the two support rods from folding and closing in the first direction.

6. The folding support structure as described in claim 5, characterized in that, A third connector is connected between the two limiting rods. The third connector includes two third hinge seats, which are respectively fixedly disposed on the opposite ends of the two limiting rods and hinged to each other. Each third hinge seat has an abutting end face, and the abutting end faces of the two third hinge seats are adapted to abut against each other when the two limiting rods are rotated to the locked position to restrict the two limiting rods to the locked position.

7. The folding support structure as described in claim 5, characterized in that, The support rod includes an upper rod and a retractable lower rod inserted into the upper rod. A locking component is provided at the connection between the upper rod and the lower rod, and the locking component is adapted to lock or unlock the upper rod and the lower rod.

8. The folding support structure as described in claim 7, characterized in that, The locking assembly includes a locking seat sleeved on the upper rod and the lower rod. An unlocking button is movably provided on the locking seat. An elastic element for resetting is provided between the unlocking button and the locking seat. A locking rack is provided on the end face of the lower rod opposite to the unlocking button. The locking rack has multiple tooth grooves arranged along its length. The unlocking button is provided with locking teeth that cooperate with the tooth grooves. The unlocking button can be pressed or released to disengage or engage the locking teeth in the tooth grooves to unlock or lock the upper rod and the lower rod.

9. The folding support structure as described in claim 8, characterized in that, The tooth groove includes a guide end face near the top of the lower rod and a locking end face near the bottom of the lower rod. The locking tooth is adapted to engage with the locking end face to restrict the sliding of the lower rod, so that the lower rod can only slide away from the upper rod when it is not unlocked.

10. The folding support structure as described in claim 8, characterized in that, A limiting end cap is provided at the top of the lower rod body. The limiting end cap is adapted to abut against the locking seat when the lower rod body slides to its maximum stroke, so as to restrict the lower rod body from sliding away from the upper rod body.

Images