Folding framework and folding chair

The folding skeleton design addresses the issue of space occupation and transportation costs by allowing the folding chair framework to maintain a compact, regular shape, facilitating efficient stacking and transportation of multiple chairs.

CN222622531UInactive Publication Date: 2025-03-18TSINGHUA UNIVERSITY +1
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Patent Information

Application Number
CN202421380861.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-17
Publication Date
2025-03-18
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Existing folding chair frameworks occupy large space when folded, making them difficult to stack and transport, which increases transportation costs.

Method used

A folding skeleton design where the first and second bone bodies interlock via a rotating connection, allowing the framework to switch between folded and expanded states, maintaining a compact and regular shape for efficient stacking and transportation.

Benefits of technology

The design allows for more efficient use of space, enabling the transportation of multiple folding chairs while reducing transportation costs by maintaining a compact and stable folded form.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a folding skeleton and a folding chair, the folding skeleton comprises: a first skeleton body and a second skeleton body, the second skeleton body is annular to define an assembly hole, the first skeleton body passes through the assembly hole, the side wall of the second skeleton body comprises a first wall section, a second wall section and a third wall section, the second wall section is connected between the first wall section and the third wall section, the first wall section and the third wall section are located on the two opposite sides of the first framework body respectively in the first direction, and the second wall section and the first framework body are connected in a pivoted mode so that the folding framework can be switched between the folding state and the unfolding state. The first wall section and the third wall section are both parallel to the first framework body. Therefore, after the folding framework is folded, the overall shape is regular, stacking of the folding framework is facilitated, the placing space can be saved, more folding chairs can be transported under the condition that the placing space is fixed, transportation of the folding chairs is facilitated, and the transportation cost is reduced.
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Description

Technical Field

[0001] The utility model relates to the field of folding devices, in particular to a folding frame and a folding chair with the folding frame. Background Art

[0002] In the related art, the folding frame of the folding chair is large in size after being folded, resulting in the folding chair occupying a large space after being folded, making it inconvenient to stack multiple folding chairs, making it inconvenient to transport the folding chair, and increasing the transportation cost. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a folding frame, which has a regular overall shape after being folded, is convenient for stacking, can save placement space, and can transport more folding chairs when the placement space is fixed, which is helpful for transporting folding chairs and helps reduce transportation costs.

[0004] The utility model further provides a folding chair.

[0005] The folding frame according to the utility model comprises:

[0006] A first skeleton body and a second skeleton body, the second skeleton body is annular to define an assembly hole, the first skeleton body is penetrated through the assembly hole, the side wall of the second skeleton body includes a first wall segment, a second wall segment and a third wall segment, the second wall segment is connected between the first wall segment and the third wall segment, along a first direction, the first wall segment and the third wall segment are respectively located on opposite sides of the first skeleton body, the second wall segment and the first skeleton body are pivotally connected to enable the folding skeleton to switch between a folded state and an unfolded state, in the folded state, the first wall segment and the third wall segment are parallel to the first skeleton body.

[0007] Therefore, the folding frame of the present application has a regular overall shape after being folded, which facilitates the stacking of the folding frame and can save placement space. Under the condition of a certain placement space, more folding chairs can be transported, which facilitates the transportation of folding chairs and helps reduce transportation costs.

[0008] In some examples of the present invention, along the first direction, the first wall segment and the third wall segment are both arranged opposite to the first skeleton body.

[0009] In some examples of the present invention, a first angle is formed between the second wall segment and the first wall segment, and a second angle is formed between the second wall segment and the third wall segment, and the angle of the first angle is equal to the angle of the second angle.

[0010] In some examples of the present invention, a first inclined section is formed at the end where the first wall section and the second wall section are connected, and the first inclined section is connected to the second wall section, and the first inclined section is inclined toward the outer side of the second skeleton body from the first wall section to the second wall section.

[0011] In some examples of the present invention, a second inclined section is formed at the end where the third wall section is connected to the second wall section, and the second inclined section is connected to the second wall section. The second inclined section is inclined toward the outer side of the second skeleton body from the third wall section to the second wall section.

[0012] In some examples of the present invention, the first wall segment and the third wall segment are parallel.

[0013] In some examples of the present invention, along a second direction, an end of the first skeleton body and an end of the second skeleton body are flush, and the second direction is perpendicular to the first direction.

[0014] In some examples of the present invention, the folding frame further includes: a pivot structure, wherein the pivot structure is connected to the first frame body and the second wall segment.

[0015] In some examples of the present invention, the pivoting structure is configured as an electric pivoting structure.

[0016] The folding chair according to the utility model comprises a seat belt and the above-mentioned folding frame, wherein the seat belt is connected between the same end of the first frame body and the second frame body.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of a folding chair in an unfolded state according to an embodiment of the utility model;

[0020] Figure 2 is another angle schematic diagram of the folding chair in the unfolded state according to the embodiment of the utility model;

[0021] Figure 3 is a side view of a folding chair in an unfolded state according to an embodiment of the utility model;

[0022] Figure 4is a top view of a folding chair in an unfolded state according to an embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of a folding chair according to an embodiment of the utility model in a folded state;

[0024] Figure 6 is another angle schematic diagram of the folding chair in the folded state according to the embodiment of the utility model;

[0025] Figure 7 is a side view of a folding chair according to an embodiment of the utility model in a folded state;

[0026] Figure 8 It is a schematic diagram of a side wall according to an embodiment of the utility model.

[0027] Reference numerals:

[0028] Folding frame 100;

[0029] A first skeleton body 10;

[0030] Second skeleton body 20; assembly hole 21;

[0031] Side wall 22; first wall section 221; second wall section 222; third wall section 223; first angle 224; second angle 225; first inclined section 226; second inclined section 227;

[0032] Pivoting structure 30;

[0033] Folding chair 200; seat belt 201. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] Reference below Figure 1-Figure 8 The folding frame 100 according to the embodiment of the present invention is described. The folding frame 100 can be the frame of a folding chair 200, but the present invention is not limited thereto. The folding frame 100 can also be used as the frame of other devices that need to be folded, for example, the folding frame 100 can be used as the frame of a folding bed. This application takes the folding frame 100 as the frame of a folding chair 200 as an example for description.

[0036] like Figure 1-Figure 8As shown, according to an embodiment of the utility model, the folding skeleton 100 includes: a first skeleton body 10 and a second skeleton body 20, the second skeleton body 20 is annular to define an assembly hole 21, the first skeleton body 10 is passed through the assembly hole 21, and the side wall 22 of the second skeleton body 20 includes a first wall segment 221, a second wall segment 222 and a third wall segment 223, the second wall segment 222 is connected between the first wall segment 221 and the third wall segment 223, along the first direction, the first wall segment 221 and the third wall segment 223 are respectively located on opposite sides of the first skeleton body 10, the second wall segment 222 and the first skeleton body 10 are pivotally connected to enable the folding skeleton 100 to switch between a folded state and an unfolded state, and in the folded state, the first wall segment 221 and the third wall segment 223 are both parallel to the first skeleton body 10.

[0037] The first skeleton body 10 may be an annular structure, the second skeleton body 20 may be annular to define an assembly hole 21, the first skeleton body 10 is inserted into the assembly hole 21, the first wall segment 221, the second wall segment 222 and the third wall segment 223 may be integrally formed, the second wall segment 222 is connected between the first wall segment 221 and the third wall segment 223, and along the first direction, when the folded skeleton 100 is Figure 3 and Figure 7 When placed in the middle direction, the first direction is Figure 3 and Figure 7 In the X direction, the first wall segment 221 is located on one side of the first skeleton body 10, and the third wall segment 223 is located on the other side of the first skeleton body 10. The second wall segment 222 is pivotally connected to the first skeleton body 10, which can also be understood as the second wall segment 222 is rotationally connected to the first skeleton body 10. Further, the second wall segment 222 is connected to the first skeleton body 10 via a pivot axis, or the second wall segment 222 is connected to the first skeleton body 10 via a hinge, so as to realize the rotational connection between the second wall segment 222 and the first skeleton body 10. By pivotally connecting the second wall section 222 and the first frame body 10, the folding frame 100 can be switched between a folded state and an unfolded state. When the folding frame 100 is in the folded state, the first wall section 221 and the third wall section 223 are parallel to the first frame body 10. Such a configuration enables the folding frame 100 to have a regular overall shape after being folded, facilitates the stacking of the folding frames 100, and saves the placement space of the folding frames 100. Under the condition of a certain placement space, more folding frames 100 can be transported, thereby transporting more folding chairs 200, which facilitates the transportation of the folding chairs 200 and helps reduce transportation costs.

[0038] Therefore, the folding frame 100 of the present application has a regular overall shape after being folded, which is convenient for stacking the folding frame 100 and can save placement space. When the placement space is fixed, more folding chairs 200 can be transported, which facilitates the transportation of the folding chairs 200 and helps reduce transportation costs.

[0039] In some embodiments of the present invention, Figure 3 and Figure 7 As shown, along the first direction, the first wall segment 221 and the third wall segment 223 are both arranged opposite to the first skeleton body 10. Among them, at least a portion of the first wall segment 221 is arranged opposite to the first skeleton body 10, and at least a portion of the third wall segment 223 is arranged opposite to the first skeleton body 10. When the folding skeleton 100 switches from the unfolded state to the folded state, the first skeleton body 10 and the second skeleton body 20 rotate relative to each other, and when the first wall segment 221 and the third wall segment 223 abut against the first skeleton body 10, the first skeleton body 10 and the second skeleton body 20 are limitedly matched to limit the relative rotation angle of the first skeleton body 10 and the second skeleton body 20, and avoid excessive rotation of the first skeleton body 10 and the second skeleton body 20, so that the folding skeleton 100 can be limited to the folded state.

[0040] In some embodiments of the present invention, Figure 7 As shown, the first wall segment 221 and the third wall segment 223 are parallel. When the folding skeleton 100 switches from the unfolded state to the folded state, the first skeleton body 10 and the second skeleton body 20 rotate relative to each other, so that the first wall segment 221 and the third wall segment 223 can abut against the first skeleton body 10 at the same time, thereby better limiting the relative rotation angle of the first skeleton body 10 and the second skeleton body 20, and further avoiding excessive rotation of the first skeleton body 10 and the second skeleton body 20, so that the folding skeleton 100 can be better limited to the folded state.

[0041] In some embodiments of the present invention, Figure 7 and Figure 8 As shown, a first angle 224 is formed between the second wall segment 222 and the first wall segment 221, and a second angle 225 is formed between the second wall segment 222 and the third wall segment 223. The angle of the first angle 224 is equal to the angle of the second angle 225. Such an arrangement enables the first wall segment 221 and the third wall segment 223 to be parallel to each other.

[0042] Furthermore, the first angle 224 and the second angle 225 are both obtuse angles, wherein, if the first angle 224 and the second angle 225 are both acute angles, when the folding skeleton 100 switches from the unfolded state to the folded state, the first skeleton body 10 and the second skeleton body 20 rotate relative to each other, and the first wall segment 221 and the third wall segment 223 simultaneously abut against the first skeleton body 10, and the contact surface between the first skeleton body 10 and the first wall segment 221 and the third wall segment 223 is line contact, and the contact area between the first skeleton body 10 and the first wall segment 221 and the third wall segment 223 is small, and along the first direction, the connection between the first wall segment 221 and the second wall segment 222 protrudes away from the first skeleton body 10, and the connection between the third wall segment 223 and the second wall segment 222 protrudes away from the first skeleton body 10, which affects the overall shape regularity of the folding skeleton 100 after folding. Therefore, since both the first angle 224 and the second angle 225 are obtuse angles, when the folding frame 100 switches from the unfolded state to the folded state, it is beneficial to make the first frame body 10 parallel to the first wall segment 221 and the third wall segment 223, which is beneficial to improve the overall shape regularity of the folding frame 100 after folding.

[0043] In some embodiments of the present invention, Figure 4-Figure 6 As shown, the end portion where the first wall segment 221 and the second wall segment 222 are connected is formed with a first inclined segment 226, and the first inclined segment 226 is connected to the second wall segment 222, and the first inclined segment 226 is inclined toward the outer side of the second skeleton body 20 from the first wall segment 221 to the second wall segment 222. It should be noted that the outer side of the second skeleton body 20 is the side of the second skeleton body 20 away from the assembly hole 21, and the inner side of the second skeleton body 20 is the side of the second skeleton body 20 facing the assembly hole 21. By connecting the first inclined segment 226 and the second wall segment 222, the first wall segment 221 and the first skeleton body 10 can be arranged opposite to each other along the first direction, so that the first wall segment 221 and the first skeleton body 10 can abut against each other to limit position.

[0044] In some embodiments of the present invention, Figure 4-Figure 6As shown, the end portion where the third wall segment 223 is connected to the second wall segment 222 is formed with a second inclined segment 227, and the second inclined segment 227 is connected to the second wall segment 222. The second inclined segment 227 is inclined toward the outer side of the second skeleton body 20 from the third wall segment 223 to the second wall segment 222. It should be noted that the outer side of the second skeleton body 20 is the side of the second skeleton body 20 that is away from the assembly hole 21, and the inner side of the second skeleton body 20 is the side of the second skeleton body 20 that faces the assembly hole 21. By connecting the second inclined segment 227 to the second wall segment 222, the third wall segment 223 and the first skeleton body 10 can be arranged opposite to each other along the first direction, so that the third wall segment 223 and the first skeleton body 10 can abut against each other to limit position. Furthermore, the second wall section 222 is connected between the first inclined section 226 and the second inclined section 227 . The second wall section 222 , the first inclined section 226 and the second inclined section 227 together define an assembly space for assembling the first skeleton body 10 . The assembly space is located on the inner side of the second skeleton body 20 .

[0045] In some embodiments of the present invention, along the second direction, the end of the first frame body 10 is flush with the end of the second frame body 20, and the second direction is perpendicular to the first direction. Figure 3 and Figure 7 When placed in the middle direction, the second direction is Figure 3 and Figure 7 The Z direction in the folded skeleton 100 Figure 3 and Figure 7 Take the middle direction placement as an example to illustrate. Figure 3 As shown, when the folding frame 100 is in the unfolded state, the upper end of the first frame body 10 and the upper end of the second frame body 20 are at the same height, and the lower end of the first frame body 10 and the lower end of the second frame body 20 are at the same height. Figure 7 As shown, when the folding frame 100 is in the folded state, the upper end of the first frame body 10 and the upper end of the second frame body 20 are at the same height, and the lower end of the first frame body 10 and the lower end of the second frame body 20 are at the same height. By aligning the end of the first frame body 10 and the end of the second frame body 20 along the second direction, the overall shape of the folding frame 100 after folding can be made more regular, which is more convenient for stacking the folding frame 100, can further save placement space, is more conducive to the transportation of the folding chair 200, and is more conducive to reducing transportation costs. In addition, the lower end of the first frame body 10 and the lower end of the second frame body 20 are at the same height, which can enable the folding frame 100 to be stably placed on a support surface such as the ground or a table.

[0046] In some embodiments of the present invention, Figure 1 and Figure 2As shown, the folding frame 100 may further include: a pivot structure 30, the pivot structure 30 being connected to the first frame body 10 and the second wall segment 222. The pivot structure 30 may be a pivot shaft, a hinge or the like, as long as the pivot structure 30 is connected to the first frame body 10 and the second wall segment 222 to realize the pivotal connection between the first frame body 10 and the second wall segment 222. The rotation axis of the first frame body 10 and the rotation axis of the second frame body 20 coincide, and the rotation axis of the first frame body 10 and the rotation axis of the second frame body 20 both extend along the third direction, such as Figure 1 As shown, the third direction is Figure 1 By providing the pivot structure 30, the first frame body 10 and the second wall segment 222 can be pivotally connected, and the first frame body 10 and the second frame body 20 can be reliably connected.

[0047] In some embodiments of the utility model, the pivot structure 30 can be configured as an electric pivot structure 30. As an example, the electric pivot structure 30 may include a motor and a pivot shaft, the pivot shaft is connected to both the first frame body 10 and the second wall segment 222, the pivot shaft is fixedly connected to one of the first frame body 10 and the second wall segment 222, the pivot shaft is pivotally connected to the other of the first frame body 10 and the second wall segment 222, the motor is connected to the pivot shaft in a transmission manner, and the motor drives the pivot shaft to rotate so that the folding frame 100 switches between the folded state and the unfolded state. As another example, the electric pivot structure 30 may include a motor, a turbine and a worm, the turbine and the worm are meshed and driven, the worm is connected to both the first frame body 10 and the second wall segment 222, the worm is fixedly connected to one of the first frame body 10 and the second wall segment 222, the worm is pivotally connected to the other of the first frame body 10 and the second wall segment 222, the turbine is fixedly arranged on the output shaft of the motor, the motor drives the turbine to rotate, and the turbine drives the worm to rotate so that the folding frame 100 switches between the folded state and the unfolded state. Therefore, by setting the pivot structure 30 as an electric pivot structure 30, it is convenient to switch the folding frame 100 between the folded state and the unfolded state, saving the operator's physical strength.

[0048] In some embodiments of the utility model, along the second direction, the same end of the first frame body 10 and the second frame body 20 is provided with an assembly hole, for example: the upper end wall of the first frame body 10 and the upper end wall of the second frame body 20 are provided with an assembly hole, and the assembly hole is used to install the seat belt 201 of the folding chair 200.

[0049] like Figure 1-Figure 8 As shown, according to the folding chair 200 of the embodiment of the utility model, the folding chair 200 includes a seat belt 201 and the folding frame 100 in the above embodiment, and the seat belt 201 is connected between the same end of the first frame body 10 and the second frame body 20, as shown in FIG. Figure 1 As shown, when the folding chair 200 is Figure 1 When the folding frame 100 is placed in the middle placement direction, the seat belt 201 is connected between the upper end wall of the first frame body 10 and the upper end wall of the second frame body 20. When the folding frame 100 is in the unfolded state, a person can sit on the seat belt 201 of the folding chair 200, and items can also be placed on the seat belt 201 of the folding chair 200. The folding chair 200 of the present application has a regular overall shape after being folded, which is convenient for stacking the folding chairs 200 and can save placement space. In the case of a certain placement space, more folding chairs 200 can be transported, which is helpful for the transportation of the folding chairs 200 and helps reduce transportation costs.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A folding frame, characterized in that: include: A first skeleton body and a second skeleton body, the second skeleton body is annular to define an assembly hole, the first skeleton body is penetrated through the assembly hole, the side wall of the second skeleton body includes a first wall segment, a second wall segment and a third wall segment, the second wall segment is connected between the first wall segment and the third wall segment, along a first direction, the first wall segment and the third wall segment are respectively located on opposite sides of the first skeleton body, the second wall segment and the first skeleton body are pivotally connected to enable the folding skeleton to switch between a folded state and an unfolded state, in the folded state, the first wall segment and the third wall segment are parallel to the first skeleton body.

2. The folding frame according to claim 1, characterized in that: Along the first direction, the first wall segment and the third wall segment are both arranged opposite to the first frame body.

3. The folding frame according to claim 1, characterized in that: A first angle is formed between the second wall segment and the first wall segment, and a second angle is formed between the second wall segment and the third wall segment. The first angle is equal to the second angle.

4. The folding frame according to any one of claims 1 to 3, characterized in that: A first inclined section is formed at the end where the first wall section and the second wall section are connected. The first inclined section is connected to the second wall section, and the first inclined section is inclined toward the outer side of the second frame body from the first wall section to the second wall section.

5. The folding frame according to claim 4, characterized in that: A second inclined section is formed at the end where the third wall section is connected to the second wall section. The second inclined section is connected to the second wall section. The second inclined section is inclined toward the outer side of the second frame body from the third wall section to the second wall section.

6. The folding frame according to any one of claims 1 to 3, characterized in that: The first wall segment and the third wall segment are parallel.

7. The folding frame according to any one of claims 1 to 3, characterized in that: Along a second direction, an end of the first frame body and an end of the second frame body are flush, and the second direction is perpendicular to the first direction.

8. The folding frame according to claim 7, characterized in that: Also includes: A pivot structure is connected to the first frame body and the second wall segment.

9. The folding frame according to claim 8, characterized in that: The pivoting structure is configured as an electric pivoting structure.

10. A folding chair, characterized in that: It comprises a seat belt and the folding frame according to any one of claims 1 to 9, wherein the seat belt is connected between the same end of the first frame body and the second frame body.