Double-groove folding supporting device

Abstract

The double-groove folding supporting device comprises a middle supporting column, a left supporting plate, a right supporting plate and an upper table top, the left groove and the right groove in the middle supporting column are arranged in a staggered mode, the left supporting plate and the right supporting plate are connected with the middle supporting column through X-shaped hinge mechanisms respectively, the left supporting plate can be folded in the left groove, and the right supporting plate can be folded in the right groove. The right supporting plate can be folded in the right groove; the two upper table tops are arranged in a bilateral symmetry mode, the upper table tops are connected to the top of the middle supporting column through the first hinge shafts, and a three-point standing supporting structure is formed through the middle supporting column, the left supporting plate and the right supporting plate. The folding chair is large in bearing capacity, small in size after being folded and stored, basically in a plate shape, and convenient to carry; the working table top and the supporting height of the double-groove folding supporting device can be randomly increased and decreased, and the double-groove folding supporting device is suitable for being manufactured into supporting devices of different types.

Description

Double groove folding support device Technical Field

[0001] This utility model relates to a support device, and more particularly to a double-groove folding support device. Background Technology

[0002] Most folding stands and folding tables on the market are modular, using a cross-linking mechanism. When unfolded, they are placed on a tabletop with support on both sides but no support in the middle, making them inconvenient to store and carry, and with low load-bearing capacity.

[0003] Another type is folding tables and stools, which are integral structures implemented through a cross-linking method. When unfolded, they have no support in the middle, and when folded, they take up a lot of space, making them inconvenient to store and carry, and have low load-bearing capacity. Summary of the Invention

[0004] This utility model proposes a double-groove folding support device, forming a hidden structure with three legs standing upright and double grooves on the left and right sides for storage. It has a large load-bearing capacity, a small volume after folding, a large support platform, and is easy to store.

[0005] Therefore, the present invention adopts the following technical solution: a double-groove folding support device, characterized in that: it includes a middle support column, a left support plate, a right support plate, and an upper platform. The middle support column is provided with a left groove and a right groove. The left groove and the right groove are staggered on the middle support column, so that the left groove and the right groove form a symmetrical structure in the middle.

[0006] The left support plate is connected to the middle support column via an X-shaped hinge mechanism, and the left support plate can be folded into the left groove; the right support plate is connected to the middle support column via another X-shaped hinge mechanism, and the right support plate can be folded into the right groove.

[0007] There are two upper platforms, which are arranged symmetrically from left to right. A hinge seat is provided on the top support plate of the middle support column, and a hinge joint is provided at one end of the upper platform. The first hinge shaft passes through the hinge joint and the hinge seat to connect the upper platform to the top of the middle support column. The upper platform can be flipped up and down.

[0008] The top of the left support plate has a support protrusion, and the top of the right support plate has a support protrusion. After the left and right support plates are unfolded to the left and right sides through the X-shaped hinge mechanism, the support protrusions of the left support plate and the support protrusions of the right support plate rest on the lower end surfaces of the two upper platforms respectively; the structure of the right support plate is symmetrical to the structure of the left support plate.

[0009] A three-point support structure is formed by the central support column, the left support plate, and the right support plate.

[0010] Furthermore, the top support plate of the intermediate support column is provided with two hinge seats spaced back and forth, and one end of the upper platform is provided with three hinge joints. The two hinge seats fit into the cavity formed between the three hinge joints. A first hinge shaft passes through the hinge joints and hinge seats to connect the upper platform to the top of the intermediate support column, and the upper platform can be flipped up and down. This structure of three hinge joints and two hinge seats is easy to manufacture and assemble, and the connection is more reliable.

[0011] Furthermore, the cavity formed between the three hinge joints on the upper platform is reserved with space to accommodate the support protrusion. When folding, it ensures that the left and right support plates enter the left and right grooves to the maximum extent, reducing the volume after folding and facilitating the folding of the upper platform downwards to fit against the middle support column.

[0012] Furthermore, limiting edges are provided on the front and rear end faces of the upper platform. When the upper platform is folded down and fits against the middle support column, the limiting edges are stuck on the front and rear end faces of the middle support column, thus restricting the position of the upper platform.

[0013] Furthermore, the X-shaped hinge mechanism on one side of the left support plate includes a first link and a second link. The first and second links have identical structures. The middle parts of the first and second links are connected by a second hinge shaft. The upper end of the first link is connected to the middle support column by a third hinge shaft, and the lower end of the first link is connected to the left support plate by a fifth hinge shaft. The upper end of the second link is connected to the left support plate by a fourth hinge shaft, and the lower end of the second link is connected to the middle support column by a sixth hinge shaft. The fifth hinge shaft can move in the upper and lower guide grooves on the left support plate, and the sixth hinge shaft can move in the upper and lower guide grooves on the middle support column. This X-shaped hinge mechanism allows the first and second links to be folded together to the maximum extent, which is beneficial for the left and right support plates to be folded into the middle support column as much as possible, reducing the volume after folding.

[0014] Furthermore, a tension spring connects the third hinge shaft and the sixth hinge shaft, providing tension when folded, facilitating the upward movement of the lower sixth and fifth hinge shafts.

[0015] Furthermore, the X-shaped hinge mechanism on the left support plate side has the same structure as the X-shaped hinge mechanism on the right support plate side, and the X-shaped hinge mechanism on the left support plate side and the X-shaped hinge mechanism on the support plate side are symmetrically arranged relative to the middle support column.

[0016] Furthermore, the lower end of the intermediate support column is equipped with an auxiliary support plate that can be horizontally guided and pulled, which facilitates increasing the support area.

[0017] The beneficial effects of this utility model are as follows: It employs a central support column, a left support plate, and a right support plate connected by an X-shaped hinge mechanism to form a three-point support structure, which improves load-bearing capacity and increases load-bearing strength; folding and unfolding require only one action, making it convenient and quick; after folding and storage, its volume is small, essentially becoming a single plate, making it easy to carry; the work surface and support height of this utility model's double-groove folding support device can be randomly increased or decreased, making it suitable for manufacturing different types of support devices, such as pocket-sized folding stools, folding stands, folding tables, folding scaffolding, etc.; this utility model offers a wide range of material choices, with the main body material being metal, wood, plastic, fiberglass, etc. Attached Figure Description

[0018] Figure 1 is a front view of this utility model;

[0019] Figure 2 is a rear view of this utility model;

[0020] Figure 3 is a top view of this utility model;

[0021] Figure 4 is an enlarged cross-sectional view along AA in Figure 1.

[0022] Figure 5 is a structural diagram of the upper platform in this utility model;

[0023] Figure 6 is a structural diagram of the intermediate support column in this utility model;

[0024] Figure 7 is a structural diagram of the left support plate in this utility model;

[0025] Figure 8 is a structural diagram of the first connecting rod in this utility model;

[0026] Figure 9 is a structural diagram of another embodiment of the present invention;

[0027] Figure 10 is a structural diagram of the auxiliary support plate shown in Figure 9.

[0028] The figure shows: 1. Middle support column, 101. Left groove, 102. Hinge seat, 103. Third hinge shaft mounting hole, 104. Upper and lower guide grooves on the middle support column, 2. Left support plate, 201. Left groove, 202. Upper and lower guide grooves on the left support plate, 3. X-shaped hinge mechanism on one side of the left support plate, 301. Fifth hinge shaft, 302. Second connecting rod, 3021. Mounting hole for the third hinge shaft, 3022. Mounting hole for the second hinge shaft, 3023. Mounting hole for the fifth hinge shaft, 303. Fourth hinge shaft, 304. First connecting rod, 305. Second hinge shaft, 306. Third hinge shaft, 307. Sixth hinge shaft, 4. Upper platform, 401. Hinge joint, 402. Cavity, 403. Limiting stop, 5. First hinge shaft, 6. 7. Right support plate, 8. Tension spring, 9. Guide groove, 10. Through cavity, 11. Auxiliary support plate, 1101. Guide pin, 1102. Connecting arm. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings.

[0030] As shown in Figures 1-8, the double-groove folding support device includes a middle support column 1, a left support plate 2, a right support plate 7, and an upper platform 4. The middle support column is provided with a left groove 101 and a right groove 105. The left groove 101 and the right groove 105 are staggered on the middle support column, so that the left groove and the right groove form a symmetrical structure in the middle.

[0031] The left support plate 2 is connected to the middle support column through an X-shaped hinge mechanism (X-shaped hinge mechanism 3 on one side of the left support plate), and the left support plate 2 can be folded into the left groove 101; the right support plate 7 is connected to the middle support column 1 through another X-shaped hinge mechanism (X-shaped hinge mechanism 6 on one side of the right support plate), and the right support plate 7 can be folded into the right groove 105.

[0032] There are two upper platforms 4, which are arranged symmetrically from left to right. A hinge seat 102 is provided on the top support plate of the middle support column. A hinge joint 401 is provided at one end of the upper platform. The first hinge shaft 5 passes through the hinge joint and the hinge seat to connect the upper platform 4 to the top of the middle support column 1. The upper platform can be flipped up and down.

[0033] The top of the left support plate is provided with a support protrusion 203, and the top of the right support plate is provided with a support protrusion. After the left and right support plates are unfolded to the left and right sides through the X-shaped hinge mechanism, the support protrusion 203 of the left support plate and the support protrusion of the right support plate rest on the lower end surface of the two upper platforms respectively; the structure of the right support plate is symmetrical to the structure of the left support plate.

[0034] A three-point support structure is formed by the central support column, the left support plate, and the right support plate.

[0035] The structure shown in Figure 3 is exactly the same as the structure shown in Figure 1, indicating that the structure on the left support plate 2 side and the structure on the right support plate 7 side are arranged in a centrally symmetrical manner.

[0036] As shown in Figures 1, 2, 5, and 6, two hinge seats 102 are spaced apart at the front and back on the top support plate of the intermediate support column. Three hinge joints 401 are correspondingly provided at one end of the upper platform. The two hinge seats fit into the cavity 402 formed between the three hinge joints. The first hinge shaft 5 passes through the hinge joints and hinge seats to connect the upper platform to the top of the intermediate support column 1, and the upper platform 4 can be flipped up and down. This structure of three hinge joints and two hinge seats is easy to manufacture and assemble, and the connection is more reliable.

[0037] As shown in Figure 5, the cavity 402 formed between the three hinge joints of the upper platform is reserved with space to accommodate the support protrusion. When folding, it ensures that the left support plate and the right support plate enter the left groove and the right groove to the maximum extent, reducing the volume after folding and facilitating the folding of the upper platform downward and fitting with the middle support column.

[0038] As shown in Figure 5, limiting edges 403 are provided on the front and rear end faces of the upper platform. When the upper platform 4 is folded down and fits against the middle support column, the limiting edges 403 are stuck on the front and rear end faces of the middle support column 1, thus restricting the position of the upper platform.

[0039] As shown in Figures 1, 2, 6, 7, and 8, the X-shaped hinge mechanism on one side of the left support plate includes a first connecting rod 304 and a second connecting rod 302. The first connecting rod 304 and the second connecting rod 302 have the same structure. The middle positions of the first connecting rod and the second connecting rod are connected by a second hinge shaft 305 (passing through the mounting hole 3022 of the second hinge shaft). The upper end of the first connecting rod is connected to the intermediate support column by a third hinge shaft 306 (passing through the mounting hole 3021 of the third hinge shaft). The lower end of the first connecting rod is connected by a fifth hinge shaft 301 (passing through the mounting hole 302 of the fifth hinge shaft). 3) Connected to the left support plate, the upper end of the second link 302 is connected to the left support plate through the fourth hinge shaft 303, and the lower end of the second link 302 is connected to the middle support column through the sixth hinge shaft 307; the fifth hinge shaft 301 can move in the upper and lower guide grooves on the left support plate, and the sixth hinge shaft 307 can move in the upper and lower guide grooves on the middle support column; this X-shaped hinge mechanism allows the first link and the second link to be folded together to the maximum extent, which is beneficial for the left support plate and the right support plate to be folded into the middle support column as much as possible, reducing the volume after folding.

[0040] As shown in Figure 9, a tension spring 8 is connected between the third hinge shaft 306 and the sixth hinge shaft 307. When folded, it provides tension, which facilitates the upward movement of the lower sixth and fifth hinge shafts.

[0041] Furthermore, as shown in Figure 9, the lower end of the intermediate support column is provided with an auxiliary support plate 11 that can be horizontally guided and pulled, which facilitates increasing the support area; as shown in Figure 10, the rear end of the auxiliary support plate 11 extends into a connecting arm 1102, the connecting arm 1102 is equipped with a guide pin 1101, the guide pin 1101 is guided in the guide groove 9 on the intermediate support column, and the intermediate support column is provided with a passage cavity 10 to facilitate the passage of the connecting arm 1102.

[0042] In this utility model, the X-shaped hinge mechanism on the left support plate side has the same structure as the X-shaped hinge mechanism on the right support plate side, and the X-shaped hinge mechanism on the left support plate side and the X-shaped hinge mechanism on the support plate side are symmetrically arranged relative to the middle support column.

Claims

1. A double-groove folding support device, characterized in that: The system includes a central support column, a left support plate, a right support plate, and upper platforms. The central support column has left and right grooves, which are staggered to create a symmetrical structure. The left support plate is connected to the central support column via an X-shaped hinge mechanism and can be folded into the left groove. The right support plate is connected to the central support column via another X-shaped hinge mechanism and can be folded into the right groove. There are two upper platforms arranged symmetrically from left to right. The top support plate of the central support column... A hinge seat is provided, and a hinge joint is provided at one end of the upper platform. A first hinge shaft passes through the hinge joint and the hinge seat to connect the upper platform to the top of the middle support column, and the upper platform can be flipped up and down. The top of the left support plate is provided with a support protrusion, and the top of the right support plate is provided with a support protrusion. After the left and right support plates are unfolded to the left and right sides through the X-shaped hinge mechanism, the support protrusions of the left support plate and the support protrusions of the right support plate respectively abut against the lower end surfaces of the two upper platforms. A three-point support structure is formed by the middle support column, the left support plate, and the right support plate.

2. The double-groove folding support device according to claim 1, characterized in that: The top support plate of the middle support column has two hinge seats spaced back and forth. One end of the upper platform has three hinge joints. The two hinge seats fit into the cavity formed between the three hinge joints. A first hinge shaft passes through the hinge joints and hinge seats to connect the upper platform to the top of the middle support column. The upper platform can be flipped up and down.

3. The double-groove folding support device according to claim 2, characterized in that: The cavity formed between the three hinge joints on the upper surface is reserved to accommodate the support protrusion.

4. The double-groove folding support device according to claim 1, 2, or 3, characterized in that: Limiting edges are provided on the front and rear end faces of the upper platform. When the upper platform is folded down and fits against the middle support column, the limiting edges are locked onto the front and rear end faces of the middle support column.

5. The double-groove folding support device according to claim 4, characterized in that: The X-shaped hinge mechanism on one side of the left support plate includes a first link and a second link. The first and second links have identical structures. The middle parts of the first and second links are connected by a second hinge shaft. The upper end of the first link is connected to the middle support column by a third hinge shaft, and the lower end of the first link is connected to the left support plate by a fifth hinge shaft. The upper end of the second link is connected to the left support plate by a fourth hinge shaft, and the lower end of the second link is connected to the middle support column by a sixth hinge shaft. The fifth hinge shaft can move in the upper and lower guide grooves on the left support plate, and the sixth hinge shaft can move in the upper and lower guide grooves on the middle support column. This X-shaped hinge mechanism allows the first and second links to be folded together to the maximum extent, which is beneficial for the left and right support plates to be folded into the middle support column as much as possible, reducing the volume after folding.

6. The double-groove folding support device according to claim 5, characterized in that: A tension spring connects the third hinge axis and the sixth hinge axis.

7. The double-groove folding support device according to claim 5 or 6, characterized in that: The X-shaped hinge mechanism on the left support plate side has the same structure as the X-shaped hinge mechanism on the right support plate side. The X-shaped hinge mechanism on the left support plate side and the X-shaped hinge mechanism on the support plate side are symmetrically arranged relative to the middle support column.

8. The double-groove folding support device according to claim 7, characterized in that: The lower end of the central support column is equipped with an auxiliary support plate that can be horizontally guided and pulled.

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