Folding chair frame and folding chair

Abstract

The utility model discloses a folding chair frame and a folding chair, and the folding chair frame comprises a base which is provided with three or more than three open slots; each joint structure comprises a first rotating piece and a second rotating piece which are coaxially pivoted in the opening groove, and the first rotating piece is provided with a stop part for limiting the relative rotating angle of the second rotating piece and the first rotating piece; the first rotating piece is provided with a first abutting part for limiting the relative rotation angle of the first rotating piece and the base, and / or the second rotating piece is provided with a second abutting part for limiting the relative rotation of the second rotating piece and the base. According to the folding chair frame provided by the utility model, synchronous rotation of the second rotating piece and the first rotating piece is realized by arranging the stop part, the first abutting part and / or the second abutting part, so that the convenience is improved, and the use difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of folding chair frames, and more specifically to a folding chair frame and a folding chair. Background Art

[0002] In the design of folding chairs, the traditional structure usually uses a connector as the main body, which is set in the middle to plug or hinge four leg tubes and four support tubes. Although this design works well in providing basic support and stability, it has some inconveniences in actual use.

[0003] The folding chair needs to be installed or opened step by step, which increases the complexity and time-consuming process of use. The user needs to connect or open each part in turn, which is not only cumbersome, but also may cause the user to feel inconvenient when using it or be unwilling to use the folding chair frequently. Summary of the invention

[0004] The utility model aims to solve one of the technical problems in the related art to a certain extent. To this end, the utility model proposes a folding chair frame, which realizes the synchronous rotation of the second rotating member and the first rotating member by setting a stopper, a first abutting portion and / or a second abutting portion, thereby improving convenience and reducing difficulty in use.

[0005] The utility model also provides a folding chair with the chair frame.

[0006] The technical solution adopted by the utility model is to provide a folding chair frame, comprising:

[0007] A base having three or more open slots;

[0008] Three or more joint structures, including a first rotating member and a second rotating member coaxially pivoted in the open slot:

[0009] The first rotating member is provided with a stopper for limiting the relative rotation angle between the second rotating member and the first rotating member;

[0010] The first rotating member is provided with a first abutment portion which limits the relative rotation angle between the first rotating member and the base, and / or

[0011] The second rotating member is provided with a second abutting portion for limiting the relative rotation between the second rotating member and the base.

[0012] After adopting the above structure, the utility model has the following advantages:

[0013] 1. The utility model provides a stopper, a first abutment and / or a second abutment. When the folding chair frame is unfolded, the second rotating member only needs to be rotated to a certain angle, and the stopper will limit the second rotating member from continuing to rotate relative to the first rotating member. The second rotating member will continue to rotate, and the second rotating member will drive the first rotating member to rotate synchronously through the stopper. The convenience of unfolding and folding the folding chair frame is improved, and the difficulty of use is reduced.

[0014] 2. The utility model provides a first abutting portion and / or a second abutting portion. When the first rotating member and / or the second rotating member are unfolded relative to the base, the first abutting portion and / or the second abutting portion are pressed against the base. The stability of the folding chair frame when unfolded is ensured, thereby enhancing the reliability and safety of its structure. This design can effectively prevent accidental folding or instability during use, providing users with a more reliable seat experience.

[0015] According to an embodiment of the utility model, the second rotating member is provided with a limiting wall, and the process of the folding chair frame switching from the folding state to the unfolding state includes a first unfolding process and a second unfolding process;

[0016] During the first unfolding process, the second rotating member can rotate relative to the first rotating member until the limiting wall abuts against the stopper;

[0017] During the second unfolding process, the second rotating member drives the first rotating member to rotate synchronously.

[0018] According to an embodiment of the utility model, a first limiting portion is provided on a side of the first rotating member facing the base, and the first limiting portion abuts against an inner side wall of the opening groove in a folded state.

[0019] According to one embodiment of the utility model, one of the first rotating member and the second rotating member is provided with a plurality of arc grooves, and the other is provided with a limiting column that cooperates with the arc groove for sliding limiting, and the center of the arc groove is located on the pivot of the first rotating member; the arrangement of the arc groove and the limiting column is used to limit the rotational stroke of both the first rotating member and the second rotating member.

[0020] According to one embodiment of the utility model, a second limiting portion is provided on the side of the second rotating member facing the first rotating member, and the second limiting portion is against the first rotating member in the folded state; that is, in the folded state, the first rotating member and the second rotating member are both located on the same side of the base, thereby reducing the storage volume of the folding chair frame.

[0021] According to an embodiment of the utility model, the opening groove has a top wall, and the first abutting portion and / or the second abutting portion abuts against the top wall in the unfolded state.

[0022] According to an embodiment of the utility model, two side walls of the opening slot are provided with pin holes for connecting the pivot.

[0023] According to an embodiment of the present utility model, the outer circumferential surface of the first rotating member disc structure protrudes outward to form the stopper.

[0024] According to an embodiment of the present invention, one of the first rotating member and the second rotating member is configured as a leg, and the other is configured as an arm, and three or more arms are of equal or unequal lengths.

[0025] According to an embodiment of the utility model, the supporting legs and / or supporting arms are fixed rods, telescopic rods, spliced ​​rods or folding rods.

[0026] A folding chair comprises a seat cloth and any one of the above-mentioned folding chair frames. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A three-dimensional diagram of a folding chair in an embodiment of the utility model;

[0029] Figure 2 A three-dimensional diagram of a folding chair frame in an embodiment of the utility model;

[0030] Figure 3 This is a partial structural diagram of the folding chair frame in the folded state according to the embodiment of the utility model;

[0031] Figure 4 This is a partial structural diagram of the folding chair frame in the unfolded state according to the embodiment of the utility model;

[0032] Figure 5 It is a schematic diagram of the folding chair frame in the first unfolding process in the embodiment of the utility model;

[0033] Figure 6 It is a schematic diagram of the folding chair frame in the second unfolding process in the embodiment of the utility model;

[0034] Figure 7 A three-dimensional diagram of the joint structure in the embodiment of the utility model;

[0035] Figure 8 An exploded view of the joint structure in the embodiment of the utility model;

[0036] Fig. 9 This is a structural schematic diagram of the joint structure in the embodiment of the utility model;

[0037] Fig.10 It is a partial top view of the folding chair frame in the folded state in the embodiment of the utility model;

[0038] Fig.11 for Fig.10 Sectional view along line AA;

[0039] Fig.12 It is a cross-sectional view of the folding chair frame in the first unfolding process in the embodiment of the utility model;

[0040] Fig.13 It is a cross-sectional view of the folding chair frame during the second unfolding process in an embodiment of the present utility model.

[0041] Description of the numbers in the figure:

[0042] 1. Seat cloth; 2. Base; 3. Legs; 4. Arms;

[0043] 21. Opening slot; 22. Inner side wall; 23. Top wall; 24. Pin hole;

[0044] 31. first rotating member; 32. stopper; 33. first pivot hole; 34. first limiting portion; 35. first abutting portion; 36. limiting column;

[0045] 41. Second rotating member; 42. Limiting wall; 43. Second pivot hole; 44. Second limiting portion; 45. Second abutting portion; 46. Arc groove. DETAILED DESCRIPTION

[0046] 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. Embodiment 1

[0047] like Figure 2-13 As shown, in this embodiment, a folding chair frame is disclosed, comprising:

[0048] A base 2 having four opening slots 21;

[0049] The four joint structures include a first rotating member 31 and a second rotating member 41 coaxially pivoted in the opening slot 21:

[0050] The first rotating member 31 is provided with a stopper 32 for limiting the relative rotation angle between the second rotating member 41 and the first rotating member 31;

[0051] The first rotating member 31 is provided with a first abutting portion 35 which limits the relative rotation angle between the first rotating member 31 and the base 2, and

[0052] The second rotating member 41 is provided with a second abutting portion 45 for limiting the relative rotation between the second rotating member 41 and the base 2 .

[0053] Furthermore, combined with Figure 2-3 As shown, in this embodiment, the first rotating member 31 is configured as a leg 3, and the second rotating member 41 is configured as an arm 4. The first rotating member 31 is connected to the first telescopic rod as a connecting member, and is combined with the first telescopic rod to form the leg 3. Similarly, the second rotating member 41 is connected to the second telescopic rod as a connecting member, and is combined with the second telescopic rod to form the arm 4.

[0054] Furthermore, in other embodiments, the first rotating member 31 is combined with the fixed rod to form the leg 3, and the first rotating member 31 serves as a part of the fixed structure of the leg 3. Similarly, the second rotating member 41 is combined with the fixed rod to form the arm 4, and the second rotating member 41 serves as a part of the fixed structure of the arm 4. Furthermore, in another embodiment, the first rotating member 31 is connected end to end with another plurality of spliced ​​rods to form the leg 3, and the second rotating member 41 is connected end to end with a plurality of spliced ​​rods to form the arm 4. In yet another embodiment, the first rotating member 31 is combined with a folding rod to form the leg 3, and the second rotating member 41 is combined with another folding rod to form the arm 4, wherein the folding rod has a multi-section rod body, and the ends of two adjacent sections of the rod body are connected by a hinge structure.

[0055] Furthermore, in this embodiment, one end of the leg 3 is pivotally connected to the base 2, and the other end is a free end for contacting the ground. When the four legs 3 are spread apart, they form a supporting structure of the folding chair frame, so that the base 2 has a certain height from the ground. One end of the arm 4 is pivotally connected to the base 2, and the other end is used to connect to the fabric corner of the seat fabric 1, so that the seat fabric 1 is spread apart to form a contour structure supporting the buttocks of the human body.

[0056] Further, in this embodiment, two adjacent arms 4 of the four arms 4 are front seat rods, and the remaining two arms 4 are rear seat rods, and the length of the rear seat rods is longer than that of the front seat rods. The four cloth corners of the seat cloth 1 are respectively connected to the four arms 4. A chair structure is formed, and the seat cloth 1 at the front seat rod position forms a contour structure supporting the buttocks of a human body, and the seat cloth 1 at the rear seat rod position forms a backrest structure restricting the back of a human body.

[0057] In another embodiment, the four arms 4 are of equal length, and the four fabric corners of the seat fabric 1 are respectively connected to the four arms 4. Thus, a stool structure is formed, which only has a contour structure for supporting the buttocks of a human body, and has no backrest structure.

[0058] Combination Figure 10-13As shown, in this embodiment, the base 2 is roughly square, and has an open slot 21 on each of its four sides. The open slot 21 is composed of two parallel side walls, an inner side wall 22 connecting the two side walls, and a top wall 23. The side walls and the inner side wall 22 on the entire base 2 are combined to form a tic-tac-toe structure. Pin holes 24 are provided on both side walls in the open slot 21, and a first pivot hole 33 is correspondingly provided on the first rotating member 31, and a second pivot hole 43 is provided on the second rotating member 41. The pin passes through the first pivot hole 33 and the second pivot hole 43, which is used to coaxially pivot the joint structure in the open slot 21, wherein the pin is a pivot.

[0059] Furthermore, in the unfolded state, the first abutting portion 35 and the second abutting portion 45 abut against the top wall 23 .

[0060] Specifically, combined Figure 8-9 As shown, the second rotating member 41 is provided with a limiting wall 42, and the process of the folding chair frame switching from the folding state to the unfolding state includes a first unfolding process and a second unfolding process;

[0061] Combination Figure 5 , Figure 11-12 As shown, during the first unfolding process, the second rotating member 41 can rotate relative to the first rotating member 31 until the limiting wall 42 abuts against the stopper 32;

[0062] Combination Figure 6 and Fig.13 As shown, during the second unfolding process, the second rotating member 41 drives the first rotating member 31 to rotate synchronously through the contact between the limiting wall 42 and the stopper 32 .

[0063] Furthermore, in this embodiment, one end of the first rotating member 31 and one end of the second rotating member 41 both have disc structures with substantially equal outer diameters, and the two disc structures are combined to form a cylindrical structure, and the axial width of the cylindrical structure is equivalent to the width of the first rotating member 31 and the second rotating member 41. A stopper 32 is formed by protruding outwards on the outer circumference of the disc structure of the first rotating member 31, and a limiting wall 42 is provided on the second rotating member 41. When the first rotating member 31 and the second rotating member 41 are combined to form a joint structure, the limiting wall 42 is located on the outer side of the stopper 32.

[0064] Specifically, a first limiting portion 34 is provided on the side of the first rotating member 31 facing the base 2, and the first limiting portion 34 abuts against the inner side wall 22 of the opening slot 21 in the folded state. The second rotating member 41 is provided with two arcuate slots 46, and the two arcuate slots 46 are centrally symmetrically arranged with the pivot of the first rotating member 31 as the center. The first rotating member 31 is provided with two limiting posts 36, and the limiting posts 36 are respectively slidably limited with the corresponding arcuate slots 46, and the center of the arcuate slots 46 is located on the pivot of the first rotating member 31; the arrangement of the arcuate slots 46 and the limiting posts 36 is used to limit the rotational travel of the first rotating member 31 and the second rotating member 41.

[0065] Further, in another embodiment, two arc grooves 46 are provided on the side of the disc structure of the first rotating member 31 facing the second rotating member 41, and the two arc grooves 46 are centrally symmetrically arranged with the pivot of the second rotating member 41 as the center. Two limiting columns 36 are provided on the side of the disc structure of the second rotating member 41 facing the first rotating member 31, and the limiting columns 36 are respectively slidably limitedly matched with the corresponding arc grooves 46, and the center of the arc groove 46 is located on the pivot of the second rotating member 41.

[0066] Specifically, a second limiting portion 44 is provided on the side of the second rotating member 41 facing the first rotating member 31, and the second limiting portion 44 abuts against the first rotating member 31 in the folded state; that is, in the folded state, the first rotating member 31 and the second rotating member 41 are both located on the same side of the base 2, thereby reducing the storage volume of the folding chair frame.

[0067] Combination Figure 1 As shown, in another embodiment, a folding chair is disclosed, comprising a seat cloth 1 and any of the above-mentioned folding chair frames.

[0068] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0069] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0070] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0073] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A folding chair frame, comprising: A base having three or more open slots; Three or more joint structures, comprising a first rotating member and a second rotating member coaxially pivoted in the opening slot, characterized in that: The first rotating member is provided with a stopper for limiting the relative rotation angle between the second rotating member and the first rotating member; The first rotating member is provided with a first abutment portion which limits the relative rotation angle between the first rotating member and the base, and / or The second rotating member is provided with a second abutting portion for limiting the relative rotation between the second rotating member and the base.

2. The folding chair frame according to claim 1, characterized in that: The second rotating member is provided with a limiting wall, and the process of the folding chair frame switching from the folding state to the unfolding state includes a first unfolding process and a second unfolding process; During the first unfolding process, the second rotating member can rotate relative to the first rotating member until the limiting wall abuts against the stopper; During the second unfolding process, the second rotating member drives the first rotating member to rotate synchronously.

3. The folding chair frame according to claim 1, characterized in that: A first limiting portion is provided on a side of the first rotating member facing the base, and the first limiting portion abuts against an inner side wall of the opening groove in a folded state.

4. The folding chair frame according to claim 1, characterized in that: One of the first rotating member and the second rotating member is provided with a plurality of arc grooves, and the other is provided with a limiting column that cooperates with the arc groove for sliding and limiting, and the center of the arc groove is located on the pivot of the first rotating member.

5. The folding chair frame according to claim 1, characterized in that: A second limiting portion is provided on a side of the second rotating member facing the first rotating member, and the second limiting portion abuts against the first rotating member in the folded state.

6. The folding chair frame according to claim 1, characterized in that: The opening slot has a top wall, and the first abutting portion and / or the second abutting portion abut against the top wall in the unfolded state.

7. The folding chair frame according to claim 1, characterized in that: The outer circumferential surface of the first rotating member disc structure protrudes outward to form the stopper.

8. The folding chair frame according to claim 1, characterized in that: One of the first rotating member and the second rotating member is configured as a leg, and the other is configured as an arm, and three or more arms are of equal or unequal lengths.

9. The folding chair frame according to claim 8, characterized in that: The supporting legs and / or supporting arms are fixed rods, telescopic rods, spliced ​​rods or folding rods.

10. A folding chair, characterized in that: It comprises a seat cloth and a folding chair frame as described in any one of claims 1-9.

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