Table and chair folding frame and folding chair

Abstract

The utility model discloses a table and chair folding frame and a folding chair, the table and chair folding frame comprises inner cross connectors, two first rods are arranged on two sides of the inner cross connectors, and the two inner cross connectors can rotate relative to each other; the connecting ring is provided with a plug pin, and the plug pin penetrates through the two inner cross connectors and the connecting ring at the same time; hole grooves are formed in the centers of the outer cross connectors, second rods are arranged on the two sides of the outer cross connectors, the connecting ring and the inner cross connectors are rotationally arranged in the hole grooves, and the two outer cross connectors can rotate relative to each other; the inner cross connector and the outer cross connector can rotate relative to each other to enable the folding frame to enter a folded state and an unfolded state.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of folding table and chair frames, in particular to a table and chair folding frame and a folding chair. BACKGROUND

[0002] The detachable table and chair frame often has a folding function. The structure of the common table and chair frame on the market is relatively complex. The table and chair frame with a relatively simple structure needs at least 5 pipe materials for installation. However, too few structures result in the need for disassembly to unfold and store, which is troublesome and loses the convenience of folding. Although the folding chair composed of more pipe materials can be folded, the overall volume after storage is still large. Therefore, how to solve the above problems is the purpose of the present application.

[0003] The above content is only used to assist in understanding the technical solutions of the present application and does not represent the acknowledgement of the above content as the closest prior art to the present application. SUMMARY

[0004] Therefore, the present application provides a table and chair folding frame and a folding chair to solve one of the above technical problems.

[0005] The technical solution adopted by the present application to solve the technical problem is a table and chair folding frame, comprising: inner cross connectors, two first rods are arranged on both sides of the inner cross connectors, and the two inner cross connectors can rotate relative to each other; a connecting ring, a latch is arranged on the connecting ring, and the latch penetrates through the two inner cross connectors and the connecting ring at the same time; an outer cross connector, a hole slot is formed in the center of the outer cross connector, second rods are arranged on both sides of the outer cross connector, the connecting ring rotates together with the inner cross connectors and is arranged in the hole slot, and the two outer cross connectors can rotate relative to each other; and the inner cross connectors and the outer cross connector can rotate relative to each other to make the folding frame enter a folding state and an unfolded state.

[0006] In some embodiments, an inner connector is arranged in the hole slot of the outer cross connector, two first connecting holes are formed in the inner connector, a rotating pin is arranged on the first connecting hole, the connecting ring is arranged in the hole slot through the rotating pin, and the inner connector has an outer edge arranged at the top.

[0007] In some embodiments, the inner cross connector is a spherical cap, two connecting blocks are arranged on one side of the inner cross connector, the first rods are arranged on the connecting blocks, and the two first rods are parallel to each other.

[0008] In some embodiments, two first bending parts are arranged on two sides of the inner cross connector, the first rods are arranged on the first bending parts, and the two first rods are parallel to each other, and the inner cross connector has a Z-shaped profile.

[0009] In some embodiments, two second bending parts are arranged on two sides of the outer cross connector, the second rods are arranged on the second bending parts, and the two second rods are parallel to each other, and the outer cross connector has a Z-shaped profile.

[0010] In some embodiments, a second connecting hole is arranged on the connecting ring from top to bottom, a third connecting hole is arranged on the connecting ring from left to right, a fourth connecting hole is arranged in the center of the inner cross connector, the bolt passes through the second connecting hole and the fourth connecting hole at the same time, and the third connecting hole is used for cooperating with the rotating bolt to rotate.

[0011] In some embodiments, in the folded state, the first rods and the second rods are parallel to each other.

[0012] Another aspect of the present application also provides a folding chair, which comprises the folding frame described above, and the top of the first rod and the second rod is used for fixing a chair surface.

[0013] The present application has the beneficial effects that: in the unfolded state, the inner cross connector and the outer cross connector, the inner cross connector can be arranged in the middle of the outer cross connector by the connecting ring, so that the first rods and the second rods can be kept parallel in the folded state, at this time, the first rods and the second rods are nearly attached together, and the folding mechanism is concentrated on the inner cross connector, which effectively reduces the volume in the folded state, and the folding mode is simple and fast. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Figure 1 is a three-dimensional structure schematic diagram of the unfolded state of the present application.

[0016] Figure 2 is a three-dimensional structure schematic diagram of the first embodiment of the folded state of the present application.

[0017] Figure 3 is a three-dimensional structure schematic diagram of the second embodiment of the folded state of the present application.

[0018] Figure 4 is an exploded view of the unfolded state of the present application.

[0019] Figure 5 is a second embodiment of the present application using state schematic diagram.

[0020] Figure legend: 1, inner cross connector; 11, connecting block; 12, first rod; 13, first bending part; 14, fourth connecting hole; 2, connecting ring; 21, bolt; 22, second connecting hole; 23, third connecting hole; 3, outer cross connector; 31, hole groove; 32, second bending part; 33, second rod; 34, inner connector; 341, first connecting hole; 342, outer edge; 343, rotating pin. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work are within the protection scope of the present application. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on that a person of ordinary skill in the art can realize, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the present application.

[0022] In the embodiments of the present application, please refer to Figures 1-5 It is shown that the present application provides a folding frame of table and chair, mainly comprising: inner cross connector 1, two first rods 12 are arranged on both sides of the inner cross connector 1, and two inner cross connectors 1 can rotate with each other; connecting ring 2, a bolt 21 is arranged on the connecting ring 2, and the bolt 21 penetrates through two inner cross connectors 1 and the connecting ring 2 at the same time; outer cross connector 3, a hole groove 31 is arranged in the center of the outer cross connector 3, and a second rod 33 is arranged on both sides of the outer cross connector 3, the connecting ring 2 rotates together with the inner cross connector 1 and is arranged in the hole groove 31, and two outer cross connectors 3 can rotate with each other; the inner cross connector 1 and the outer cross connector 3 can rotate with each other to make the folding frame enter the folded state and the unfolded state.

[0023] Specifically, in the unfolded state, two inner cross connectors 1 and two outer cross connectors 3 are unfolded by rotating with each other, and the inner cross connector 1 is rotated in the opposite direction of the folded state in the outer cross connector 3 through the connecting ring 2, until the first rod 12 and the outer cross connector 3 are mutually clamped, the stability performance in the unfolded state is maintained by using gravity, at the same time, the folding frame of the present application is not limited to a chair, and can be used on part of the supporting structure, such as a table, a billboard and the like, and the folding mechanism can be used, such as Figure 4The table's folding design allows for easy storage and wide versatility.

[0024] The following will continue to describe some preferred / improved embodiments based on the above embodiments. Any one of the following embodiments can be selected, or multiple embodiments can be combined.

[0025] Reference Figure 3 As shown, an inner connector 34 is provided in the slot 31 of the outer cross connector 3. The inner connector 34 has two first connection holes 341. A rotating pin 343 is provided in the first connection hole 341. The connecting ring 2 is rotatably disposed in the slot 31 through the rotating pin 343. The inner connector 34 has an outer edge 342 at the top. The bottom of the outer edge 342 abuts against the outer cross connector 3. The presence of the inner connector 34 makes the connection between the slot 31 and the connecting ring 2 more flexible and can effectively reduce maintenance costs.

[0026] As a first embodiment, refer to Figure 2 and Figure 4 As shown, the inner cross connector 1 is a spherical cap. Two connecting blocks 11 are provided on one side of the inner cross connector 1. The first rod 12 is disposed on the connecting block 11. The two first rods 12 are parallel to each other. The connecting blocks 11 play a role in locking each other, which can limit the rotation angle of the inner cross connector 1 and prevent the inner cross connector 1 from being damaged due to excessive angle.

[0027] As a second embodiment, refer to Figure 3 As shown, the inner cross connector 1 has two first bending portions 13 on both sides, and the first rod 12 is disposed on the first bending portion 13. The two first rods 12 are parallel to each other. The inner cross connector 1 has a Z-shaped profile. The Z-shaped profile of the inner cross connector 1 allows the first rod 12 and the second rod 33 to be closer together in the folded state, effectively reducing the usage volume.

[0028] Specifically, the external cross connector 3 has two second bends 32 on both sides, and the second rods 33 are disposed on the second bends 32. The two second rods 33 are parallel to each other. The external cross connector 3 has a Z-shaped profile. The Z-shaped profile can cooperate with both the first embodiment and the second embodiment at the same time and can ensure a small volume.

[0029] For illustration, in the first embodiment, the first rod 12 in the side view orthographic projection is a straight line, and the two second rods 33 visible from above and below in the side view orthographic projection are located on both sides of the first rod 12. In the second embodiment, the outlines of the first rod 12 and the second rod 33 are two straight lines. Therefore, the volume occupied by the first embodiment is larger than that occupied by the second embodiment. In the first embodiment, the outline of the two inner cross connectors 1 after connection is spherical. The larger volume makes the durability and structural strength of the inner cross connectors 1 in the first embodiment higher than those in the second embodiment.

[0030] Specifically, in order to enable the two inner cross connectors 1 and the two outer cross connectors 3 to rotate and connect with each other, and to concentrate the folding mechanism of the folding frame on the inner cross connectors 1 and the outer cross connectors 3, the connecting ring 2 has a second connecting hole 22 from top to bottom and a third connecting hole 23 from left to right. The center of the inner cross connector 1 has a fourth connecting hole 14. The pin 21 passes through both the second connecting hole 22 and the fourth connecting hole 14. The third connecting hole 23 is used to cooperate with the rotating pin 343 for rotation.

[0031] Reference Figure 2 As shown, in order to reduce the volume occupied by the folded frame in the folded state, the first rod 12 and the second rod 33 are parallel to each other in the folded state.

[0032] As one example, another aspect of this application provides a folding chair, including the aforementioned table and chair folding frame, wherein the top of the first rod and the second rod are used to fix the chair surface, for example, the chair surface is made of fabric, and includes four support points, which respectively support and fix the top of the first rod and the second rod.

[0033] The various embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of this application. The foregoing embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A folding frame for tables and chairs, characterized in that, include: An inner cross connector, wherein two first rods are provided on both sides of the inner cross connector, and the two inner cross connectors can rotate relative to each other; A connecting ring, wherein a pin is provided on the connecting ring, and the pin passes through both of the inner cross connectors and the connecting ring simultaneously; An external cross connector has a central slot and two second rods on its sides. The connecting ring rotates and is rotatably disposed in the slot along with the internal cross connector. The two external cross connectors can rotate relative to each other. The inner cross connector and the outer cross connector can rotate relative to each other to allow the folding frame to enter a folded state and an unfolded state.

2. The table and chair folding frame according to claim 1, characterized in that, An inner connector is provided in the slot of the external cross connector. The inner connector has two first connection holes and a rotating pin is provided in the first connection hole. The connecting ring is rotatably disposed in the slot through the rotating pin. The inner connector has an outer edge at the top, and the bottom of the outer edge abuts against the external cross connector.

3. A folding table and chair frame according to claim 1, characterized in that, The inner cross connector is a spherical cap, and two connecting blocks are provided on one side of the inner cross connector. The first rod is disposed on the connecting block, and the two first rods are parallel to each other.

4. A folding table and chair frame according to claim 1, characterized in that, The inner cross connector has two first bends on both sides, and the first rod is disposed on the first bend. The two first rods are parallel to each other, and the outline of the inner cross connector is Z-shaped.

5. A folding table and chair frame according to claim 1, characterized in that, The external cross connector has two second bends on both sides, and the second rod is disposed on the second bend. The two second rods are parallel to each other, and the outline of the external cross connector is Z-shaped.

6. A folding table and chair frame according to claim 2, characterized in that, The connecting ring has a second connecting hole from top to bottom and a third connecting hole from left to right. The inner cross connector has a fourth connecting hole in its center. The pin passes through both the second and fourth connecting holes. The third connecting hole is used to rotate in conjunction with the rotating pin.

7. A folding table and chair frame according to claim 1, characterized in that, In the folded state, the first and second rods are parallel to each other.

8. A folding chair, characterized in that, The folding frame includes any one of claims 1-7, wherein the top of the second rod of the first rod is used to fix the seat surface.

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