FOLDABLE SUPPORT, FOLDABLE CHAIR AND FOLDABLE TABLE

Abstract

Disclosed are a foldable support, a foldable chair, and a foldable table. The foldable support includes a foldable triangular frame, and the triangular frame includes a first connecting block, a second connecting block, a third connecting block, a first connecting rod, a second connecting rod, and a third connecting rod. The second connecting block and the third connecting block are symmetrically arranged on one side of the first connecting block, the third connecting rod is provided with a first end and a second end, the first end of the third connecting rod is rotatably connected to the second connecting block, the second end of the third connecting rod is provided with a limiting elastic column and an unlocking button, and the third connecting block is provided with a connecting groove and a locking hole. The unlocking button is in linked connection with the limiting elastic column.

Claims

1. A foldable support, comprising a foldable triangular frame, a lower support leg assembly that is detachably connected to the triangular frame, and an upper support rod assembly that is detachably connected to the triangular frame, wherein the triangular frame comprises a first connecting block, a second connecting block, a third connecting block, a first connecting rod, a second connecting rod, and a third connecting rod, wherein the second connecting block and the third connecting block are symmetrically arranged on one side of the first connecting block, one end of the first connecting rod and one end of the second connecting rod are rotatably connected to the first connecting block respectively, and the other ends of the first connecting rod and the second connecting rod are fixedly connected to the second connecting block and the third connecting block respectively; the third connecting rod is provided with a first end and a second end opposite to the first end, the first end of the third connecting rod is rotatably connected to the second connecting block, the second end of the third connecting rod is provided with a limiting elastic column and an unlocking button, the third connecting block is provided with a connecting groove, a locking hole is formed in a side wall of the connecting groove, and the second end of the third connecting rod enters the connecting groove and is snap-fitted into the locking hole by means of the limiting elastic column, thereby being tightly locked in the third connecting block; and the unlocking button is in linked connection with the limiting elastic column, and the unlocking button is pressed to disengage the limiting elastic column from the locking hole, such that the second end of the third connecting rod is unlocked in the third connecting block, and in this case, the second end of the third connecting rod can be detached from the connecting groove, and the triangular frame is folded.

2. The foldable support according to claim 1, wherein the unlocking button is arranged at a position of the second end of the third connecting rod that is offset from the third connecting block, such that when the second end of the third connecting rod enters the connecting groove, the unlocking button is located at a certain distance from an inner side of the third connecting block.

3. The foldable support according to claim 1, wherein a spring plate is arranged inside the second end of the third connecting rod, one end of the unlocking button and one end of the limiting elastic column respectively extend into inside of the second end of the third connecting rod and abut against the spring plate, the other ends of the unlocking button and the limiting elastic column, under the action of an elastic force from the spring plate, are exposed outside the second end of the third connecting rod, and a peripheral wall of the second end of the third connecting rod is provided with a first hole for exposing the unlocking button and a second hole for exposing the limiting elastic column.

4. The foldable support according to claim 3, wherein the spring plate is curved and comprises a first end arm and a second end arm that are arranged opposite to each other, the first end arm abuts against a side of the inside of the second end of the third connecting rod that is opposite to the first hole and the second hole, the second end arm abuts against a same side of the inside of the second end of the third connecting rod where the first hole and the second hole are located, and extending ends of the unlocking button and the limiting elastic column abut against the second end arm respectively.

5. The foldable support according to claim 4, wherein a length of the second end arm is greater than that of the first end arm.

6. The foldable support according to claim 1, wherein the unlocking button and the limiting elastic column are linearly spaced apart from each other at the second end of the third connecting rod, the unlocking button is arranged closer to an inner side of the second end of the third connecting rod, and the limiting elastic column is arranged closer to an outer side of the second end of the third connecting rod.

7. The foldable support according to claim 1, wherein the locking hole is a through hole formed in an upper side wall of the connecting groove, and correspondingly, the unlocking button and the limiting elastic column are both arranged on an upper side of the second end of the third connecting rod.

8. A foldable chair, comprising a flexible chair surface and a chair frame, wherein the chair frame is the foldable support according to claim 1, and the second connecting block and the third connecting block are symmetrically arranged in front of the first connecting block; the lower support leg assembly comprises two front support legs and two rear support legs, and the upper support rod assembly comprises two front support rods and two rear support rods, wherein the two front support legs are respectively inserted into lower ends of the second connecting block and the third connecting block, the two rear support legs are respectively inserted into both sides of a lower end of the first connecting block, the two front support rods are respectively inserted into upper ends of the second connecting block and the third connecting block, the two rear support rods are respectively inserted into both sides of an upper end of the first connecting block, and lengths of the two rear support rods are greater than those of the two front support rods; the flexible chair surface rises from front to back, two first plug-in sleeves are arranged on both sides of a front end of the flexible chair surface, and two second plug-in sleeves are arranged on both sides of a rear end of the flexible chair surface, wherein the two second plug-in sleeves are higher than the two first plug-in sleeves, upper ends of the two front support rods are respectively inserted into the two first plug-in sleeves, and upper ends of the two rear support rods are respectively inserted into the two second plug-in sleeves.

9. A foldable chair, comprising a flexible chair surface and a chair frame, wherein the chair frame is the foldable support according to claim 1, and the second connecting block and the third connecting block are symmetrically arranged behind the first connecting block; the lower support leg assembly comprises two front support legs and two rear support legs, and the upper support rod assembly comprises two front support rods and two rear support rods, wherein the two front support legs are respectively inserted into both sides of a lower end of the first connecting block, the two rear support legs are respectively inserted into lower ends of the second connecting block and the third connecting block, the two front support rods are respectively inserted into both sides of an upper end of the first connecting block, the two rear support rods are respectively inserted into upper ends of the second connecting block and the third connecting block, and lengths of the two rear support rods are greater than those of the two front support rods; and the flexible chair surface rises from front to back, two first plug-in sleeves are arranged on both sides of a front end of the flexible chair surface, and two second plug-in sleeves are arranged on both sides of a rear end of the flexible chair surface, wherein the two second plug-in sleeves are higher than the two first plug-in sleeves, upper ends of the two front support rods are respectively inserted into the two first plug-in sleeves, and upper ends of the two rear support rods are respectively inserted into the two second plug-in sleeves.

10. A foldable table, comprising a tabletop, two support beams, and a support frame, wherein the two support beams are arranged in parallel on both sides of a lower end of the tabletop from front to back to support the tabletop, and the support frame is the foldable support according to claim 1; the second connecting block and the third connecting block are symmetrically arranged on a left or right side of the first connecting block; the lower support leg assembly comprises two first support legs that are respectively inserted into both sides of the lower end of the first connecting block and two second support legs that are respectively inserted into the lower ends of the second connecting block and the third connecting block; the upper support rod assembly comprises two first support rods that are respectively inserted into both sides of the upper end of the first connecting block and two second support rods that are respectively inserted into the upper ends of the second connecting block and the third connecting block, wherein a snap-fit piece is arranged at an upper end of each of the two first support rods and the two second support rods, and the two first support rods and the two second support rods are snap-fitted into corresponding end portions of the two support beams through their respective snap-fit pieces.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG. 1 is a three-dimensional schematic diagram of a foldable support with a second end of a third connecting rod in a locked state according to an example of the present disclosure.

[0018] FIG. 2 is an enlarged view of a part A in FIG. 1.

[0019] FIG. 3 is a three-dimensional schematic diagram of a foldable support with a second end of a third connecting rod in an unlocked state according to an example of the present disclosure.

[0020] FIG. 4 is a structural schematic diagram of a third connecting rod according to an example of the present disclosure.

[0021] FIG. 5 is a structural exploded view of a second end of a third connecting rod according to an example of the present disclosure.

[0022] FIG. 6 is a three-dimensional schematic diagram of a foldable chair of a structure according to an example of the present disclosure.

[0023] FIG. 7 is a schematic diagram of a breakdown structure of a foldable chair of a structure according to an example of the present disclosure.

[0024] FIG. 8 is a three-dimensional schematic diagram of a foldable chair of another structure according to an example of the present disclosure.

[0025] FIG. 9 is a schematic diagram of a breakdown structure of a foldable chair of another structure according to an example of the present disclosure.

[0026] FIG. 10 is a three-dimensional schematic diagram of a foldable table according to an example of the present disclosure.

[0027] FIG. 11 is a schematic diagram of a breakdown structure of a foldable table according to an example of the present disclosure.

DETAILED DESCRIPTIONS OF THE EMBODIMENTS

[0028] The present disclosure will be further described in detail below with reference to the examples shown in the accompanying drawings.

[0029] As illustrated in FIGS. 1-5, in an example of the present disclosure, there is provided a foldable support, and the foldable support includes a foldable triangular frame 1, a lower support leg assembly 2 that is detachably connected to the triangular frame 1, and an upper support rod assembly 3 that is detachably connected to the triangular frame 1.

[0030] The triangular frame 1 includes a first connecting block 11, a second connecting block 12, a third connecting block 13, a first connecting rod 14, a second connecting rod 15, and a third connecting rod 16. The second connecting block 12 and the third connecting block 13 are symmetrically arranged on one side of the first connecting block 11, one end of the first connecting rod 14 and one end of the second connecting rod 15 are rotatably connected to the first connecting block 11 respectively, and the other ends of the first connecting rod 14 and the second connecting rod 15 are fixedly connected to the second connecting block 12 and the third connecting block 13 respectively. The third connecting rod 16 is provided with a first end 161 and a second end 162 opposite to the first end 161, the first end 161 of the third connecting rod 16 is rotatably connected to the second connecting block 12, the second end 162 of the third connecting rod 16 is provided with a limiting elastic column 4 and an unlocking button 5, the third connecting block 13 is provided with a connecting groove 131, a locking hole 132 is formed in a side wall of the connecting groove 131, and the second end 162 of the third connecting rod 16 enters the connecting groove 131 and is snap-fitted into the locking hole 132 by means of the limiting elastic column 4, thereby being tightly locked in the third connecting block 13.

[0031] The unlocking button 5 is in linked connection with the limiting elastic column 4, and the unlocking button 5 is pressed to disengage the limiting elastic column 4 from the locking hole 132, such that the second end 162 of the third connecting rod 16 is unlocked in the third connecting block 13. In this case, the second end 162 of the third connecting rod 16 can be detached from the connecting groove 131, and the triangular frame 1 is folded. Specifically, when the second end 162 of the third connecting rod 16 is unlocked, the second end 162 of the third connecting rod 16, with the first end 161 as a fulcrum, can rotate toward the first connecting block 11 to detach from the connecting groove 131, and the first connecting rod 14 and the second connecting rod 15, with the first connecting block 11 as a fulcrum, rotate toward each other to achieve folding of the triangular frame 1.

[0032] In a preferred example of the present disclosure, in order to avoid interference by the first connecting rod 14 and the second connecting rod 15 when the third connecting rod 16 rotates, a plane of the third connecting rod 16 is lower than planes of the first connecting rod 14 and the second connecting rod 15.

[0033] In a preferred example of the present disclosure, the unlocking button 5 is arranged at a position of the second end 162 of the third connecting rod 16 that is offset from the third connecting block 13, such that when the second end 162 of the third connecting rod 16 enters the connecting groove 131, the unlocking button 5 is located at a certain distance from an inner side of the third connecting block 13. Such design can prevent the third connecting block 13 from interfering with pressing of the unlocking button 5 for unlocking.

[0034] In a preferred example of the present disclosure, a spring plate 6 is arranged inside the second end 162 of the third connecting rod 16, one end of the unlocking button 5 and one end of the limiting elastic column 4 respectively extend into inside of the second end 162 of the third connecting rod 16 and abut against the spring plate 6, the other ends of the unlocking button 5 and the limiting elastic column 4, under the action of an elastic force from the spring plate 6, are exposed outside the second end 162 of the third connecting rod 16, and a peripheral wall of the second end 162 of the third connecting rod 16 is provided with a first hole 1621 for exposing the unlocking button 5 and a second hole 1622 for exposing the limiting elastic column 4. That is, in this preferred example, the unlocking button 5 and the limiting elastic column 4 are in linked connection as they respectively abut against with the spring plate 6, one exposed end of the limiting elastic column 4 can be snap-fitted into the locking hole 132 in case of locking, and one exposed end of the unlocking button 5 is configured for pressing by a user for unlocking.

[0035] Further, the spring plate 6 is curved and includes a first end arm 61 and a second end arm 62 that are arranged opposite to each other, a length of the second end arm 62 is greater than that of the first end arm 61, the first end arm 61 abuts against a side of the inside of the second end 162 of the third connecting rod 16 that is opposite to the first hole 1621 and the second hole 1622, the second end arm 62 abuts against a same side of the inside of the second end 162 of the third connecting rod 16 where the first hole 1621 and the second hole 1622 are located, and extending ends of the unlocking button 5 and the limiting elastic column 4 abut against the second end arm 62 respectively.

[0036] In a preferred example of the present disclosure, the unlocking button 5 and the limiting elastic column 4 are linearly spaced apart from each other at the second end 162 of the third connecting rod 16, the unlocking button 5 is arranged closer to an inner side of the second end 162 of the third connecting rod 16, and the limiting elastic column 4 is arranged closer to an outer side of the second end 162 of the third connecting rod 16. Such arrangement facilitates the linked connection between the unlocking button 5 and the limiting elastic column 4 through the spring plate 6.

[0037] In a preferred example of the present disclosure, the locking hole 132 is a through hole formed in an upper side wall of the connecting groove 131, and correspondingly, the unlocking button 5 and the limiting elastic column 4 are both arranged on an upper side of the second end 162 of the third connecting rod 16. The locking hole 132 is arranged to be a through hole, which helps the limiting elastic column 4 to penetrate through an entire upper side wall of the connecting groove 131 during the locking, thereby enhancing reliability and stability of the locking. The unlocking button 5 is arranged on the upper side of the second end 162 of the third connecting rod 16, which facilitates the pressing of the unlocking button 5 for unlocking. The limiting elastic column 4 and the locking hole 132 are also arranged on the upper side of the second end 162 of the third connecting rod 16, which facilitates observation of fit between the limiting elastic column 4 and the locking hole 132.

[0038] As described above, to store the foldable support, in an aspect, the triangular frame 1 can be folded, and in a further aspect, the lower support leg assembly 2 and the upper support rod assembly 3 can be disassembled from the triangular frame 1 and stored together with the folded triangular frame 1, which reduces a storage volume of the foldable support and facilitates carrying and storage.

[0039] As illustrated in FIGS. 6 and 7, in an example of the present disclosure, there is provided a foldable chair of a certain structure, and the foldable chair includes a flexible chair surface 71 and a chair frame 72, where the chair frame 72 is the foldable support described above. The second connecting block 12 and the third connecting block 13 are symmetrically arranged in front of the first connecting block 11. The lower support leg assembly 2 includes two front support legs 21 and two rear support legs 22, and the upper support rod assembly 3 includes two front support rods 31 and two rear support rods 32, where the two front support legs 21 are respectively inserted into lower ends of the second connecting block 12 and the third connecting block 13, the two rear support legs 22 are respectively inserted into both sides of a lower end of the first connecting block 11, the two front support rods 31 are respectively inserted into upper ends of the second connecting block 12 and the third connecting block 13, the two rear support rods 32 are respectively inserted into both sides of an upper end of the first connecting block 11, and lengths of the two rear support rods 32 are greater than those of the two front support rods 31. The flexible chair surface 71 rises from front to back, two first plug-in sleeves 711 are arranged on both sides of a front end of the flexible chair surface 71, and two second plug-in sleeves 712 are arranged on both sides of a rear end of the flexible chair surface 71, where the two second plug-in sleeves 712 are higher than the two first plug-in sleeves 711, upper ends of the two front support rods 31 are respectively inserted into the two first plug-in sleeves 711, and upper ends of the two rear support rods 32 are respectively inserted into the two second plug-in sleeves 712. To store the foldable chair, in an aspect, the flexible chair surface 71 can be removed from the chair frame 72 for rolling up, and in a further aspect, the chair frame 72 can be folded, which reduces a storage volume of the foldable chair and facilitates carrying and storage.

[0040] As illustrated in FIGS. 8 and 9, in an example of the present disclosure, there is provided a foldable chair of another structure, and the foldable chair includes a flexible chair surface 81 and a chair frame 82, where the chair frame 82 is the foldable support described above. The second connecting block 12 and the third connecting block 13 are symmetrically arranged behind the first connecting block 11. The lower support leg assembly 2 includes two front support legs 23 and two rear support legs 24, and the upper support rod assembly 3 includes two front support rods 33 and two rear support rods 34, where the two front support legs 23 are respectively inserted into both sides of a lower end of the first connecting block 11, the two rear support legs 24 are respectively inserted into lower ends of the second connecting block 12 and the third connecting block 13, the two front support rods 33 are respectively inserted into both sides of an upper end of the first connecting block 11, the two rear support rods 34 are respectively inserted into upper ends of the second connecting block 12 and the third connecting block 13, and lengths of the two rear support rods 34 are greater than those of the two front support rods 33. The flexible chair surface 81 rises from front to back, two first plug-in sleeves 811 are arranged on both sides of a front end of the flexible chair surface 81, and two second plug-in sleeves 812 are arranged on both sides of a rear end of the flexible chair surface 81, where the two second plug-in sleeves 812 are higher than the two first plug-in sleeves 811, upper ends of the two front support rods 33 are respectively inserted into the two first plug-in sleeves 811, and upper ends of the two rear support rods 34 are respectively inserted into the two second plug-in sleeves 812. To store the foldable chair, in an aspect, the flexible chair surface 81 can be removed from the chair frame 82 for rolling up, and in a further aspect, the chair frame 82 can be folded, which reduces a storage volume of the foldable chair and facilitates carrying and storage.

[0041] As illustrated in FIGS. 10 and 11, in an example of the present disclosure, there is provided a foldable table, and the foldable table includes a tabletop 91, two support beams 92, and a support frame 93, where the two support beams 92 are arranged in parallel on both sides of a lower end of the tabletop 91 from front to back to support the tabletop 91. The tabletop 91 is formed by splicing together a plurality of foldable tabletop units in a length direction, either of the two support beams 92 is formed by splicing together at least two detachable rod units, and the support frame 93 is the foldable support described above. The second connecting block 12 and the third connecting block 13 are symmetrically arranged on a left or right side of the first connecting block 11. The lower support leg assembly 2 includes two first support legs 25 that are respectively inserted into both sides of the lower end of the first connecting block 11 and two second support legs 26 that are respectively inserted into the lower ends of the second connecting block 12 and the third connecting block 13. The upper support rod assembly 3 includes two first support rods 35 that are respectively inserted into both sides of the upper end of the first connecting block 11 and two second support rods 36 that are respectively inserted into the upper ends of the second connecting block 12 and the third connecting block 13, where a snap-fit piece 900 is arranged at an upper end of each of the two first support rods 35 and the two second support rods 36, and the two first support rods 35 and the two second support rods 36 are snap-fitted into corresponding end portions of the two support beams 92 through their respective snap-fit pieces 900. To store the foldable table, in an aspect, the tabletop 91 can be disassembled from the two support beams 92 for folding, in a further aspect, the two support beams 92 can be disassembled from the support frame 93 for separate storage, and in yet another aspect, the support frame 93 itself can also be folded, which reduces a storage volume of the foldable table and facilitates carrying and storage.

[0042] The above described examples are merely preferred examples of the present disclosure, and the scope of implementations of the present disclosure shall not be defined thereby, that is, all simple equivalent changes and modifications made with respect to the patent scope and the description of the present disclosure shall fall within the scope of the present disclosure.