Rotary folding chair frame and folding chair

Abstract

The embodiment of the utility model discloses a rotary folding chair frame and a folding chair, and the rotary folding chair frame comprises a first mounting plate, a second mounting plate, a rotary supporting disc, a folding seat frame and a folding foot stool, the rotary supporting disc is arranged between the first mounting plate and the second mounting plate through rotary connection, so that the first mounting plate and the second mounting plate can relatively rotate around the center line of the rotary supporting disc; the folding seat frame is fixedly mounted on the upper portion of the first mounting plate, and the folding foot stool is fixedly mounted on the lower portion of the second mounting plate. According to the rotary folding chair frame provided by the utility model, the rotary supporting disc is arranged between the first mounting plate and the second mounting plate, so that the rotating stability and stability are improved, the chair is safer and more comfortable in the adjusting process, and the discomfort caused by instability is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to outdoor articles technical field more specifically, relate to a kind of rotary folding chair frame and folding chair. BACKGROUND

[0002] A rotary assembly for swivel chair is disclosed in CN208339266U, comprising a first unit, a second unit and at least one positioning unit. The first unit and the second unit rotate relative to each other. The first unit is provided with a first rotating surface facing the second unit. The second unit is provided with a second rotating surface facing the first unit. The first rotating surface and the second rotating surface cooperate with each other. The positioning unit is installed on the first unit and abuts against the second rotating surface. The second rotating surface is provided with a groove that matches the positioning unit.

[0003] Although the patent scheme can provide basic rotation function, in actual use process, it will lack enough steady feeling when rotating, which causes discomfort to the user when rotating or adjusting the position of the chair. The design of the rotary assembly does not fully consider the need for support and stability when the chair seat is rotating, thereby affecting the overall use experience. SUMMARY

[0004] The utility model aims at solving one of the technical problems in the related art to some extent. To this end, the utility model embodiment proposes a rotary folding chair frame. By arranging the rotating support disc between the first mounting plate and the second mounting plate, the rotation stability and stability are improved, the seat is more safe and comfortable during adjustment, and discomfort caused by instability is avoided.

[0005] The utility model embodiment further proposes a folding chair with the above-mentioned rotary folding chair frame.

[0006] The technical scheme adopted by the utility model is as follows: a rotary folding chair frame is provided, comprising a first mounting plate, a second mounting plate, a rotating support disc, a folding seat frame and a folding foot support. The rotating support disc is arranged between the first mounting plate and the second mounting plate through rotary connection, so that the first mounting plate and the second mounting plate can rotate relative to the center line of the rotating support disc. The folding seat frame is fixedly installed on the upper part of the first mounting plate, and the folding foot support is fixedly installed on the lower part of the second mounting plate.

[0007] With the above structure, by arranging the rotating support disc between the first mounting plate and the second mounting plate, the rotation connection between the two can be effectively realized, and the stability during rotation can be greatly improved. The precise design of the rotating support disc makes the rotation between the first mounting plate and the second mounting plate smoother, avoiding the instability of the seat caused by excessive rotation friction or loose connection components in the traditional scheme. In addition, the structural design of the folding seat frame and the folding foot frame enables the overall chair frame to maintain balanced support force during folding or unfolding, ensuring that users always feel safe and comfortable during seat adjustment.

[0008] Further, the folding seat frame and the folding foot frame are fixedly installed on the upper and lower parts of the first mounting plate and the second mounting plate, which not only ensures the structural firmness, but also enhances the durability of the swivel chair by reasonably distributing the load. Users can experience smoother operation during rotation or seat adjustment, reducing the discomfort caused by instability.

[0009] According to an embodiment of the present application, the rotating support disc comprises a first rotating disc and a second rotating disc, and the first rotating disc and the second rotating disc are arranged in layers.

[0010] Among the first rotating disc and the second rotating disc, at least one of the contact surfaces is provided with a plurality of arc protrusions to reduce friction during relative rotation, and the arc protrusions are used to reduce the contact area to ensure the smoothness and durability during rotation; and / or

[0011] The contact surface of at least one of the first rotating disc and the second rotating disc is provided with an annular groove.

[0012] According to an embodiment of the present application, the first rotating disc is provided with a first annular groove, the second rotating disc is provided with a third annular groove on the same side relative to the first rotating disc, and the annular step on one side of the first annular groove facing the second rotating disc is rotatably matched with the third annular groove, effectively avoiding the offset of the first rotating disc relative to the second rotating disc, and further enhancing the positioning accuracy and stability of the rotating assembly. During rotation, the matching of the annular step and the annular groove can provide sufficient restraint force to ensure that the rotating disc always maintains the correct relative position during rotation, avoiding increased friction or imbalance caused by offset, thereby improving the overall use experience and durability; and / or

[0013] The first rotating disc or the second rotating disc is provided with a connecting column, and the first mounting plate or the second mounting plate is correspondingly provided with a hole, and the connecting column and the hole are rotatably matched; the stable connection between the rotating disc and the mounting plate is realized, the rotation function of the rotating disc is ensured, and the gap during rotation is reduced through precise matching, reducing the noise and friction caused by shaking or loosening.

[0014] According to one embodiment of the utility model, the first rotating disc is provided with a second annular groove, the second rotating disc is provided with a center groove on the same side relative to the first rotating disc, and the annular step on the side of the second annular groove facing the second rotating disc is rotatably matched with the center groove; the relative positioning of the first rotating disc and the second rotating disc in the rotating process is effectively maintained, and excessive friction or unstable phenomena caused by deviation or misalignment are prevented.

[0015] According to one embodiment of the utility model, the first rotating disc is provided with a first annular step, the second rotating disc is provided with a second annular step on the same side relative to the first rotating disc, wherein the first annular step is located between the first annular groove and the second annular groove, the second annular step is located between the third annular groove and the center groove, and the annular groove on the side of the first annular step facing the second rotating disc is rotatably matched with the second annular step.

[0016] According to one embodiment of the utility model, the folding seat frame and / or the folding foot frame comprise crossbars, connecting pieces and support rods, a plurality of the crossbars are connected by the connecting pieces to form a polygonal frame, one end of the support rod is hinged to the connecting piece, and the support rod reciprocally moves relative to the connecting piece between a folded position and an unfolded position. The folding seat frame is used for connecting chair cloth to form the upper half of the chair, and the folding foot frame is in contact with the ground to provide support force, thereby ensuring the stability and comfort of the chair during use. When the seat is folded, the support rod can be retracted to the folded position to save space; and when unfolded, the support rod is extended to the unfolded position to ensure structural stability and provide better support force and durability. This design not only improves the functionality of the seat, but also makes it more convenient and flexible during use.

[0017] According to one embodiment of the utility model, the connecting piece is provided with a slot, and the inner end of the support rod is inserted into the slot in the unfolded position to limit the relative movement of the support rod and the connecting piece, thereby preventing unnecessary sliding or displacement of the support rod due to external force during use.

[0018] According to one embodiment of the utility model, a hinge piece is arranged on the hinge shaft of the connecting piece and the support rod, and the hinge piece is located in the support rod and can reciprocally move along the length direction of the support rod relative to the support rod.

[0019] According to one embodiment of the utility model, an insert is fixedly installed in the support rod, and the insert has a guide rail that can be slidably matched with the hinge piece; and / or

[0020] A spring is arranged between the hinge piece and the support rod, and the spring has an elastic tendency to keep the support rod inserted into the slot.

[0021] A folding chair comprises a chair cloth and the rotary folding chair frame as claimed in any one of the preceding claims. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art 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.

[0023] Figure 1 It is a perspective view of the rotary folding chair frame in the embodiments of the present application.

[0024] Figure 2 It is an exploded view of the rotary folding chair frame in the embodiments of the present application.

[0025] Figure 3 It is a perspective view of the rotary folding chair frame in the folded state in the embodiments of the present application.

[0026] Figure 4 It is a top view of the rotary support disc in the embodiments of the present application.

[0027] Figure 5 It is Figure 4 a sectional view along line A-A.

[0028] Figure 6 It is an exploded view of the rotary support disc in the embodiments of the present application.

[0029] Figure 7 It is a perspective view of the first rotary disc and the second rotary disc in the embodiments of the present application.

[0030] Figure 8 It is a perspective view of the first rotary disc and the second rotary disc after being inverted in the embodiments of the present application.

[0031] Figure 9 It is a perspective view of the rotary folding chair frame after removing the support rods in the embodiments of the present application.

[0032] Figure 10 It is Figure 9 a local enlarged view at B.

[0033] Figure 11 It is a sectional view when the connecting piece and the support rod are locked in the embodiments of the present application.

[0034] Figure 12 It is a sectional view when the connecting piece and the support rod are unlocked in the embodiments of the present application.

[0035] Figure 13Figure 2 is a perspective view of the rotating support disc of the present application.

[0036] Figure 14 Figure 3 is a perspective view of the rotating support disc of the present application inverted.

[0037] Figure 15 Figure 4 is a cross-sectional view of the rotating support disc of the present application.

[0038] Figure 5 is a schematic diagram of the reference numerals used in the drawings.

[0039] 1, first mounting plate; 2, second mounting plate; 3, rotating support disc; 4, folding seat frame; 5, folding footrest; 6, end cap; 7, fastener;

[0040] 31, first rotating disc; 32, second rotating disc;

[0041] 31a, first annular groove; 31b, first annular step; 31c, second annular groove; 31d, connecting column; 31e, arc surface protrusion; 31f, annular groove;

[0042] 32a, third annular groove; 32b, second annular step; 32c, central groove;

[0043] 41, crossbar; 42, connecting piece; 43, support rod; 44, insert; 45, hinged piece; 46, spring; 47, hinged shaft;

[0044] 42a, insertion slot;

[0045] 44a, guide rail; 44b, waist-shaped hole;

[0046] 45a, hinged hole. DETAILED DESCRIPTION

[0047] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application. Embodiment One

[0048] As Figures 1-12As shown in the figure, in the embodiment, a rotating folding chair frame is disclosed, which comprises a first mounting plate 1, a second mounting plate 2, a rotating support disc 3, a folding seat frame 4 and a folding leg frame 5. The rotating support disc 3 is arranged between the first mounting plate 1 and the second mounting plate 2 through a rotating connection, so that the first mounting plate 1 and the second mounting plate 2 can rotate relative to the center line of the rotating support disc 3. The folding seat frame 4 is fixedly installed on the upper portion of the first mounting plate 1, and the folding leg frame 5 is fixedly installed on the lower portion of the second mounting plate 2.

[0049] Further, in the embodiment, the folding seat frame 4 is foldable by itself, and is used to connect a chair cloth to form an upper half of a seat, that is, to provide a chair surface part for receiving a human body. The folding leg frame 5 also has a folding function and constitutes a leg part of the seat.

[0050] Specifically, in combination with Figure 1 and Figure 9 As shown in the figure, in the embodiment, the folding seat frame 4 and the folding leg frame 5 each comprise a cross bar 41, a connecting piece 42 and a support rod 43. A plurality of cross bars 41 are connected through the connecting pieces 42 to form a polygonal frame structure, and one end of the support rod 43 is hingedly connected to the connecting piece 42, and the support rod 43 can reciprocate relative to the connecting piece 42 between a folded position and an unfolded position.

[0051] Further, in the embodiment, the folding leg frame 5 comprises four cross bars 41, four connecting pieces 42 and four support rods 43. The four connecting pieces 42 are arranged in a quadrilateral manner, and two ends of each cross bar 41 are connected to the connecting pieces 42, respectively, to form a horizontally arranged rectangular frame. The cross bar 41 is made of metal material, and in the embodiment, aluminum alloy is preferred. In other embodiments, the cross bar 41 can also be made of steel material. The connecting piece 42 is made of plastic, and is manufactured through an injection molding integral molding process. The four support rods 43 of the folding leg frame 5 are equal in length, and serve to support the chair legs of the folding chair. The support rod 43 is in the form of an extension rod, and in other embodiments, the support rod 43 can also be a spliced rod or an integral straight rod structure.

[0052] In the embodiment, the folding seat frame 4 comprises four cross bars 41, four connecting pieces 42 and four support rods 43. The four connecting pieces 42 are also arranged in a quadrilateral manner, and two ends of each cross bar 41 are connected to the connecting pieces 42, respectively, to form a horizontally arranged rectangular frame. The cross bar 41 is also made of metal material, and in the embodiment, aluminum alloy is preferred. In other embodiments, steel material can be used. The connecting piece 42 is made of plastic, and is manufactured through an injection molding integral molding process. The front side support rod 43 of the folding seat frame 4 is shorter than the rear side support rod 43, the two rear side support rods 43 serve as back support rods 43, and the two front side support rods 43 serve as seat support rods 43. The upper end of the chair cloth is connected to the four support rods 43, and the rear side forms a cloth surface area for supporting the back of the chair. All the support rods 43 are in the form of extension rods.

[0053] The first mounting plate 1 is made of a metal plate, and in this embodiment, an aluminum alloy material is used. In order to enhance the load-bearing capacity, the surface of the first mounting plate 1 is provided with a plurality of reinforcing ribs. The first mounting plate 1 is arranged front and back, and is connected to two of the four horizontal rods 41 that are longer in the horizontal direction by screws. Similarly, the second mounting plate 2 is comparable in size to the first mounting plate 1, is also arranged front and back, and is connected to two of the four horizontal rods 41 of the folding seat frame 4 that are longer in the horizontal direction by screws. The second mounting plate 2 is made of the same aluminum alloy material as the first mounting plate 1, but in other embodiments, the second mounting plate 2 can also be made of a ferrous alloy material.

[0054] Further, in this embodiment, the rotating support disc 3 plays a dual role of bearing and support, supporting the weight of the first mounting plate 1 and its upper part, as well as other load-bearing parts. A part of the rotating support disc 3 can rotate around its own axis relative to the remaining part, i.e. by connecting the first mounting plate 1 and the second mounting plate 2 through the rotating support disc 3, so that the first mounting plate 1 can reciprocally rotate relative to the second mounting plate 2, ensuring the stability and stability of the seat during rotation.

[0055] Specifically, in combination with Figures 7-8 As shown in the drawings, in this embodiment, the rotating support disc 3 includes a first rotating disc 31 and a second rotating disc 32, wherein the first rotating disc 31 and the second rotating disc 32 are stacked, and at least one of the two has a plurality of arc protrusions 31e on the contact surface to reduce friction when the two rotate relative to each other. The first rotating disc 31 is provided with a first annular groove 31a, and the same side of the second rotating disc 32 relative to the first rotating disc 31 is provided with a third annular groove 32a, and the annular step on one side of the first annular groove 31a facing the second rotating disc 32 is rotatably matched with the third annular groove 32a. The first rotating disc 31 or the second rotating disc 32 is provided with a connecting column 31d, and the first mounting plate 1 or the second mounting plate 2 is correspondingly provided with a hole, and the connecting column 31d and the hole are rotatably matched. The first rotating disc 31 is provided with a second annular groove 31c, and the same side of the second rotating disc 32 relative to the first rotating disc 31 is provided with a central groove 32c, and the annular step on one side of the second rotating disc 32 facing the second rotating disc 32 is rotatably matched with the central groove 32c. The first rotating disc 31 is provided with a first annular step 31b, and the same side of the second rotating disc 32 relative to the first rotating disc 31 is provided with a second annular step 32b, wherein the first annular step 31b is located between the first annular groove 31a and the second annular groove 31c, the second annular step 32b is located between the third annular groove 32a and the central groove 32c, and the annular groove on one side of the first annular step 31b facing the second rotating disc 32 is rotatably matched with the second annular step 32b.

[0056] Further, in this embodiment, the first rotating disc 31 and the second rotating disc 32 are both in the form of a disc, as shown in Figure 7As shown, it is a perspective view of the first rotating disc 31 and the second rotating disc 32. Figure 8 As shown, it is a perspective view of the first rotating disc 31 and the second rotating disc 32.

[0057] Further, in this embodiment, the lower surface of the first rotating disc 31 and the upper surface of the second rotating disc 32 are precisely connected by means of concave-convex matching. In terms of material selection, the first rotating disc 31 and the second rotating disc 32 are made of wear-resistant plastic, which has strong durability and wear resistance and can effectively cope with long-term use. In addition, the bottom surface of the first annular groove 31a and the second annular groove 31c is provided with an arc-shaped protrusion 31e, the top end of the arc-shaped protrusion 31e is in contact with the second rotating disc 32, and the contact area is small. The first rotating disc 31 and the second rotating disc 32 are coated with a lubricant to improve their cooperation effect when rotating, reduce friction, and ensure stable rotation performance.

[0058] As shown, Figures 13-15 In other embodiments, at least one of the first rotating disc 31 and the second rotating disc 32 is provided with an annular groove 31f on the contact surface, and the first rotating disc 31 and the second rotating disc 32 are coated with a lubricant, preferably white oil. The design of the annular groove 31f is to prevent the loss of lubricant, thereby maintaining the lubricating effect.

[0059] In terms of connection, the first rotating disc 31 is fixedly connected to the first mounting plate 1 by rivets, and the second rotating disc 32 is fixedly connected to the second mounting plate 2 by rivets, which can ensure the close combination of the components and prevent loosening. The central part of the second rotating disc 32 is provided with a through hole, and the upper surface of the first mounting plate 1 and the lower surface of the second mounting plate 2 are respectively provided with end caps 6, which play a protective and reinforcing role. By using fasteners 7, the upper end cap 6, the first mounting plate 1, the first rotating disc 31, the second rotating disc 32, the second mounting plate 2 and the lower end cap 6 are sequentially fastened and connected from top to bottom, which further ensures the firm connection between the components and avoids loosening or misalignment caused by external force.

[0060] Specifically, in combination with Figures 9-12As shown, the connecting piece 42 is provided with a slot 42a, and in the unfolded position, the inner end of the support rod 43 is inserted into the slot 42a to limit the relative movement of the support rod 43 and the connecting piece 42, preventing unnecessary sliding or displacement of the support rod 43 due to external forces during use. The connecting piece 42 and the hinge shaft 47 of the support rod 43 are provided with a hinge piece 45, which is located inside the support rod 43 and can reciprocate along the length direction of the support rod 43. The support rod 43 is fixedly installed with an insert 44, and the insert 44 has a guide rail 44a that can be slidably matched with the hinge piece 45. The hinge piece 45 and the support rod 43 are provided with a spring 46, and the spring 46 has an elastic tendency to keep the support rod 43 inserted into the slot 42a.

[0061] Further, in this embodiment, the insert 44 is embedded in the inner end of the support rod 43, and the inside is provided with a guide rail 44a to guide the sliding of the hinge piece 45. The hinge piece 45 adopts a sliding block structure and is slidably matched with the insert 44, ensuring smooth movement between the hinge piece 45 and the insert 44. In order to provide stable support force, the hinge piece 45 and the insert 44 are provided with a spring 46, which adopts a tension spring structure. This design can effectively provide the necessary elastic force, making the support rod 43 more flexible and reliable during use. In other embodiments, the tension spring can also be replaced by a coil spring 46 or a special-shaped spring 46 to meet different application requirements.

[0062] The hinge piece 45 is provided with a hinge hole 45a transversely penetrating, and the insert 44 and the support rod 43 are also provided with transverse waist-shaped holes 44b, and the hinge shaft 47 penetrates through these waist-shaped holes 44b and the hinge hole 45a, connecting the hinge piece 45 and the support rod 43. Through this hinge structure, the support rod 43 can be folded and unfolded when needed. When the support rod 43 needs to be folded, the support rod 43 is pulled, and the hinge shaft 47 and the hinge piece 45 in the support rod 43 remain in a fixed position relative to the connecting piece 42, and the support rod 43 moves axially, so that the inner end of the support rod 43 is separated from the slot 42a, so that the support rod 43 can be smoothly folded. When the support rod 43 is rotated in the opposite direction, the support rod 43 will return to the position of the slot 42a, and the angle of the support rod 43 is fixed by inserting into the slot 42a, so that it is in an unfolded state and provides the required support force.

[0063] In other embodiments, a folding chair is disclosed, which comprises a chair cloth and the rotating folding chair frame described in this embodiment.

[0064] In the description of the utility model, need understanding is, the term "center" "longitudinal" "lateral" "length" "width" "thickness" "upper" "lower" "front" "back" "left" "right" "vertical" "horizontal" "top" "bottom" "inner" "outer" "clockwise" "counterclockwise" "axial" "radial" "circumferential" and so on indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawing, just is for the convenience of describing the utility model and simplifying the description, and not indicate or imply the indicated device or element must have a particular orientation, with a particular orientation configuration and operation, therefore can not be understood as the restriction of the utility model.

[0065] In addition, the term "first" "second" is only for the purpose of description, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0066] In the utility model, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or just indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or just indicate that the horizontal height of the first feature is less than that of the second feature.

[0067] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as the limitation of the utility model, and the ordinary skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model.

Claims

1. A rotary folding chair frame, characterized by: The rotating folding chair frame comprises a first mounting plate, a second mounting plate, a rotating support disc, a folding seat frame and a folding foot frame; the rotating support disc is arranged between the first mounting plate and the second mounting plate through a rotary connection, so that the first mounting plate and the second mounting plate can rotate relative to the center line of the rotating support disc; the folding seat frame is fixedly installed on the upper portion of the first mounting plate, and the folding foot frame is fixedly installed on the lower portion of the second mounting plate.

2. A swivel folding chair frame according to claim 1, characterized in that: The rotating support disc comprises a first rotating disc and a second rotating disc, and the first rotating disc and the second rotating disc are arranged in a stack. At least one of the contact surfaces of the first rotating disc and the second rotating disc is provided with a plurality of arc-shaped protrusions to reduce friction when the two rotate relative to each other; and / or At least one of the contact surfaces of the first rotating disc and the second rotating disc is provided with an annular groove.

3. A swivel folding chair frame according to claim 2, wherein: The first rotating disc is provided with a first annular groove, the second rotating disc is provided with a third annular groove on the same side relative to the first rotating disc, and the annular step on one side of the first annular groove facing the second rotating disc is rotatably matched with the third annular groove; and / or The first rotating disc or the second rotating disc is provided with a connecting column, and the first mounting plate or the second mounting plate is correspondingly provided with a hole, and the connecting column and the hole are rotatably matched.

4. A swivel folding chair frame according to claim 3, wherein: The first rotating disc is provided with a second annular groove, and the second rotating disc is provided with a central groove on the same side relative to the first rotating disc, and the annular step on one side of the second annular groove facing the second rotating disc is rotatably matched with the central groove.

5. A swivel folding chair frame according to claim 4, wherein: The first rotating disc is provided with a first annular step, and the second rotating disc is provided with a second annular step on the same side relative to the first rotating disc, wherein the first annular step is located between the first annular groove and the second annular groove, the second annular step is located between the third annular groove and the central groove, and the annular groove on one side of the first annular step facing the second rotating disc is rotatably matched with the second annular step.

6. A swivel folding chair frame according to claim 1, wherein: The folding seat frame and / or the folding foot frame comprises a cross rod, a connecting piece and a support rod, a plurality of cross rods are connected by connecting pieces to form a polygonal frame, one end of the support rod is hinged to the connecting piece, and the support rod reciprocally moves relative to the connecting piece between a folded position and an unfolded position.

7. A swivel folding chair frame according to claim 6, characterized in that: The connecting piece is provided with a slot, and in the unfolded position, the inner end of the support rod is inserted into the slot to limit the relative movement of the support rod and the connecting piece.

8. A swivel folding chair frame according to claim 7, characterized in that: The hinge shaft of the connecting piece and the support rod is provided with a hinge piece, the hinge piece is located in the support rod and can reciprocally move along the length direction of the support rod relative to the support rod.

9. A swivel folding chair frame according to claim 8, characterized in that: The support rod is fixedly installed with an insert, and the insert has a guide rail which is slidably matched with the hinge piece; and / or A spring is arranged between the hinge piece and the support rod, and the spring has an elastic tendency to keep the support rod inserted into the slot.

10. A folding chair characterized by: The rotating folding chair frame comprises a chair cloth and any one of claims 1-9.

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