Foldable chair type frame

Abstract

The utility model discloses a foldable chair-type frame which comprises a foldable frame, a chair-type seat, a chair-type seat and a chair-type seat, the foldable frame can be movably unfolded or contracted, and at least three mounting holes are formed in the upper end of the foldable frame; the two ends of the back top are respectively provided with a first connecting pipe, and the two first connecting pipes are respectively inserted into the two adjacent mounting holes; the attachment pipe is arranged on the outer side of one first connecting pipe; and the two ends of the handrail are respectively provided with a second connecting pipe, one second connecting pipe is inserted into the other mounting hole, and the other second connecting pipe is inserted into the attachment pipe. Through the application of the foldable chair type frame, the back top and the armrests are detachably arranged on the foldable frame through the elastic clamping pieces, so that the size of the folded chair type frame is reduced, and the chair type frame is convenient to assemble; meanwhile, the folding frame is matched with the steel wire rope assembly, so that the using stability of the folding frame is improved, and the situation that the seat surface cloth sinks due to weight is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, in particular to a foldable chair-type frame. Background Art

[0002] Foldable chair-type furniture is a common furniture in life, such as folding chair sofa, folding sofa, etc. Foldable chair-type furniture is generally used in living rooms and bedrooms, and is provided with a foldable chair-type frame inside.

[0003] In the prior art, foldable chair frames often use a simple hinge connection to achieve the folding function of the entire frame, but the simple hinge connection will affect the stability of the entire frame; and the existing chair frames often use a screw structure to increase the support of the entire frame, but the screw structure will increase the difficulty of assembling the entire frame.

[0004] In addition, the existing chair frame often directly lays the seat cloth in the hollow part of the frame when in use. When the seat cloth is subjected to force, it is easy to cause the seat cloth to sink, causing irreversible damage to the seat cloth and a poor user experience. Utility Model Content

[0005] In view of this, in order to solve the above problems, the purpose of the present invention is to provide a foldable chair frame, comprising:

[0006] A folding frame, the folding frame being movably arranged to be expanded or retracted, and the upper end of the folding frame having at least three mounting holes;

[0007] A back top, each end of the back top has a first connecting tube, and the two first connecting tubes are respectively inserted into the two adjacent mounting holes;

[0008] an attachment tube, the attachment tube being disposed on an outer side of the first connecting tube;

[0009] The armrest has a second connecting tube at each end, wherein one of the second connecting tubes is inserted into the other mounting hole, and the other of the second connecting tubes is inserted into the attachment tube.

[0010] In another preferred embodiment, the invention further comprises: at least four elastic clips, each of the elastic clips having at least one abutting end, two of the elastic clips being respectively disposed in the two first connecting tubes, and another two of the elastic clips being respectively disposed in the two second connecting tubes;

[0011] Wherein, each of the first connecting tube and the second connecting tube is provided with a limiting hole in a radial direction, and the abutting end passes through the limiting hole and is abutted against the folding frame or the attachment tube.

[0012] In another preferred embodiment, each of the elastic clips includes: an elastic member and a limiting bead, the elastic member can be elastically deformed and arranged in the first connecting tube or the second connecting tube, the limiting bead is connected to the elastic member, and the limiting bead matches the limiting hole.

[0013] In another preferred embodiment, three first locking holes are provided on the folding frame, and a second locking hole is provided on the attachment tube. The limiting beads pass through the limiting holes and engage with the first locking hole or the second locking hole.

[0014] In another preferred embodiment, the folding frame includes: three first tubes, a second tube and a folding assembly, the three first tubes and one second tube are arranged together in a rectangular array, the three first tubes and one second tube are connected to the folding assembly, the upper end of the first tube is provided with the mounting hole along the axial direction, and the upper end of the first tube is provided with the first clamping hole along the radial direction.

[0015] In another preferred embodiment, it further includes: four support tubes, which are arranged in sequence along the circumference of the folding component, one end of each support tube is connected to the first tube, and the other end of the support tube is connected to the first tube or the second tube.

[0016] In another preferred embodiment, it further includes: two steel wire rope assemblies, wherein both ends of one of the steel wire rope assemblies are connected to two first tubes arranged diagonally, and wherein both ends of the other steel wire rope assembly are respectively connected to the other first tube and the second tube.

[0017] In another preferred embodiment, the folding component includes: four first corner pieces, four second corner pieces and four folding frames, the four first corner pieces are arranged in a rectangular array, the four second corner pieces are arranged in a rectangular array, each first corner piece is arranged above a second corner piece, the first tube can movably pass through a first corner piece and be connected to the second corner piece, the second tube can movably pass through a first corner piece and be connected to the second corner piece, the two ends of the upper part of each folding frame are respectively connected to two adjacent first corner pieces, and the two ends of the lower part of each folding frame are respectively connected to two adjacent second corner pieces.

[0018] In another preferred embodiment, the folding frame includes: a first folding member and a second folding member, the middle part of the first folding member and the middle part of the second folding member are hinged, the two ends of the first folding member are respectively hinged to a first corner member and a second corner member, and the two ends of the second folding member are respectively hinged to another second corner member and another first corner member.

[0019] In another preferred embodiment, the first corner piece and the second corner piece each have a first hinge groove and a second hinge groove, the end of the first folding piece is connected to the first hinge groove, and the end of the second folding piece is connected to the second hinge groove.

[0020] Due to the adoption of the above technical solution, the present invention has the following positive effects compared with the prior art:

[0021] Through the application of the utility model, a foldable chair frame is provided, and the backrest and armrests are detachably arranged on the folding frame through elastic clips, which reduces the volume of the chair frame after folding and facilitates assembly; at the same time, the cooperation between the folding frame and the wire rope assembly also increases the stability of the folding frame during use and avoids the sinking of the seat cloth due to weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of a foldable chair frame of the present invention in an unfolded state;

[0023] Figure 2 This is a schematic diagram of the connection between the armrests and the backrest of a foldable chair frame of the present invention;

[0024] Figure 3 This is a folding frame structure diagram of a foldable chair-type frame of the present invention;

[0025] Figure 4 The utility model is a schematic diagram of a foldable chair frame in a collapsed state.

[0026] In the attached figure:

[0027] 100. Folding frame, 110. First tube; 111. Mounting hole; 112. First clamping hole; 120. Second tube; 130. First corner piece; 140. Second corner piece; 150. First folding piece; 160. Second folding piece; 200. Wire rope assembly; 300. Support tube; 400. Back top; 410; First connecting tube; 420. Attachment tube; 421. Second clamping hole; 500. Handrail; 510. Second connecting tube; 600. Limiting hole; 700. Fastener; 800. Elastic piece; 810. Limiting bead; 900. Extension. DETAILED DESCRIPTION

[0028] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inside", "outside", "front", "back", "horizontal", and "vertical" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0030] It should be noted that the terms “horizontal” and “vertical” in the present invention are used to describe a rough positional relationship, rather than a strict “horizontal plane” or “vertical plane”.

[0031] like Figures 1 to 4 As shown, a preferred embodiment of a foldable chair frame is shown, comprising: a folding frame 100, the folding frame 100 can be movably expanded or contracted, and the upper end of the folding frame 100 has at least three mounting holes 111; a back top 400, the two ends of the back top 400 respectively have a first connecting tube 410, and the two first connecting tubes 410 are respectively inserted into two adjacent mounting holes 111; an attachment tube 420, the attachment tube 420 is arranged on the outside of a first connecting tube 410; an armrest 500, the two ends of the armrest 500 respectively have a second connecting tube 510, wherein one second connecting tube 510 is inserted into another mounting hole 111, and wherein the other second connecting tube 510 is inserted into the attachment tube 420.

[0032] Furthermore, as a preferred embodiment, it also includes: at least four elastic clips, each elastic clip has at least one latching end, two elastic clips are respectively arranged in the two first connecting tubes 410, and the other two elastic clips are respectively arranged in the two second connecting tubes 510.

[0033] Furthermore, as a preferred embodiment, the first connecting tube 410 and the second connecting tube 510 are both provided with a limiting hole 600 in the radial direction, and the abutting end passes through the limiting hole 600 and abuts against the folding frame 100 or the attachment tube 420 .

[0034] Furthermore, as a preferred embodiment, each elastic clamp includes: an elastic member 800 and a limiting bead 810. The elastic member 800 is elastically deformably disposed within the first connecting tube 410 or the second connecting tube 510. The limiting bead 810 is connected to the elastic member 800 and matches the limiting hole 600. Furthermore, the aforementioned clamping end is preferably the limiting bead 810.

[0035] Furthermore, as a preferred embodiment, the elastic member 800 is preferably arranged in a V-shaped structure, which can at least undergo elastic deformation in the radial direction of the corresponding connecting pipe.

[0036] Furthermore, as a preferred embodiment, three first locking holes 112 are opened on the folding frame, and a second locking hole 421 is opened on the attachment tube 420. The limiting bead 810 passes through the limiting hole 600 and is locked with the first locking hole 112 or the second locking hole 421.

[0037] Furthermore, as a preferred embodiment, the folding frame includes: three first tubes 110, a second tube 120 and a folding assembly. The three first tubes 110 and the second tube 120 are arranged together in a rectangular array. The three first tubes 110 and the second tube 120 are all connected to the folding assembly. A mounting hole 111 is formed axially at the upper end of the first tube 110, and a first clamping hole 112 is opened radially at the upper end of the first tube 110.

[0038] Further, as a preferred embodiment, when the first connecting tube 410 is connected to the first tube 110, the limiting hole 600 is arranged opposite to the first clamping hole 112, and the limiting bead 810 passes through the limiting hole 600 and the first clamping hole 112 in sequence and is clamped against the first clamping hole 112; when the second connecting tube 510 is connected to the attachment tube 420, the limiting hole 600 is arranged opposite to the second clamping hole 421, and the limiting bead 810 passes through the limiting hole 600 and the second clamping hole 421 in sequence and is clamped against the second clamping hole 421.

[0039] Furthermore, as a preferred embodiment, the present invention further comprises four support tubes 300, which are sequentially arranged along the circumference of the folding assembly. One end of each support tube 300 is connected to the first tube 110, and the other end of each support tube 300 is connected to the first tube 110 or the second tube 120. Furthermore, two support tubes 300 are connected at both ends to the two first tubes 110, respectively, while one end of the other two support tubes 300 is connected to the other first tube 110, and the other ends of the other two support tubes 300 are connected to the second tube 120.

[0040] Furthermore, as a preferred embodiment, a placement hole is opened at the upper end of the second tube 120, and the other ends of the other two support tubes 300 are restrained from top to bottom at the placement hole by a fastener.

[0041] Furthermore, as a preferred embodiment, the seat assembly further includes two steel cable assemblies 200, wherein the ends of one steel cable assembly 200 are connected to two diagonally arranged first tubes 110, and the ends of the other steel cable assembly 200 are respectively connected to the other first tube 110 and the second tube 120. Furthermore, the steel cable assembly 200 can prevent the seat fabric from sinking under weight after installation.

[0042] Further, as a preferred embodiment, the folding assembly includes: four first corner pieces 130, four second corner pieces 140 and four folding frames, the four first corner pieces 130 are arranged in a rectangular array, the four second corner pieces 140 are arranged in a rectangular array, each first corner piece 130 is arranged above a second corner piece 140, the first tube 110 can movably pass through a first corner piece 130 and be connected to the second corner piece 140, the second tube 120 can movably pass through a first corner piece 130 and be connected to the second corner piece 140, the two ends of the upper part of each folding frame are respectively connected to two adjacent first corner pieces 130, and the two ends of the lower part of each folding frame are respectively connected to two adjacent second corner pieces 140.

[0043] Furthermore, as a preferred embodiment, the rectangular array has an X direction and a Y direction.

[0044] Furthermore, as a preferred embodiment, the two adjacent first corner pieces 130 are two first corner pieces 130 located in the X direction or the Y direction, and the two adjacent second corner pieces 140 are two second corner pieces 140 located in the X direction or the Y direction.

[0045] Furthermore, as a preferred embodiment, a through hole is provided on the first corner piece 130, a notch is provided on the second corner piece 140, the first tube 110 passes through the through hole and is connected to the notch, and the second tube 120 passes through the through hole and is connected to the notch.

[0046] Furthermore, as a preferred embodiment, the folding frame includes: a first folding member 150 and a second folding member 160, the middle part of the first folding member 150 and the middle part of the second folding member 160 are hinged, the two ends of the first folding member 150 are respectively hinged to a first corner member 130 and a second corner member 140, and the two ends of the second folding member 160 are respectively hinged to another second corner member 140 and another first corner member 130.

[0047] Furthermore, as a preferred embodiment, the support tube 300 is used to provide additional connections to the upper end of the folding frame 100 along the X and Y directions, thereby limiting its mobility and ensuring that the folding frame 100 maintains stability when loaded. Furthermore, the upper portion of the first folding member 150, the upper portion of the second folding member 160, and the support tube 300 together form a triangular structure, which enhances the overall stability of the folding frame 100.

[0048] Furthermore, as a preferred embodiment, the first corner piece 130 and the second corner piece 140 both have a first hinge groove and a second hinge groove, the end of the first folding piece 150 is connected to the first hinge groove, and the end of the second folding piece 160 is connected to the second hinge groove.

[0049] The above description is only a preferred embodiment of the present invention and does not limit the implementation manner and protection scope of the present invention.

[0050] The present invention also has the following implementation methods based on the above:

[0051] In a further embodiment of the present invention, the fastener is preferably a large head screw.

[0052] In a further embodiment of the present invention, an extension portion 900 is provided on the outer wall of each first tube 110 and the outer wall of each second tube 120. The extension portion 900 is provided in a ring-shaped structure. The extension portion 900 is used to provide support for the bottom of the first corner piece 130 to limit its vertical movement.

[0053] In a further embodiment of the present invention, the armrest 500 , the backrest 400 , the support tube 300 and the wire rope assembly 200 are all detachably connected to the folding frame 100 .

[0054] Taking unfolding the chair frame as an example, the specific operating steps of the foldable chair frame of the present invention are as follows:

[0055] First, unfold the folding frame 100. Then, connect the wire rope assembly 200 to the first tube 110 and the second tube 120, respectively. Next, connect the support tube 300 to the first tube 110 and the second tube 120, respectively, and further secure the support tube 300 to the second tube 120 using thumb screws. Finally, connect the first connecting tube 410 on the backrest 400 to the first tube 110 by interlocking the elastic clip with the first interlocking hole 112. Connect the second connecting tube 510 on one end of the armrest 500 to the first tube 110 by interlocking the elastic clip with the first interlocking hole 112. Connect the second connecting tube 510 on the other end of the armrest 500 to the attachment tube 420 by interlocking the elastic clip with the second interlocking hole 421. At this point, the unfolding of the foldable chair frame is complete.

[0056] The above description is only a preferred embodiment of the present invention and does not limit the implementation method and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A foldable chair frame, characterized in that: include: A folding frame, the folding frame being movably arranged to be expanded or retracted, and the upper end of the folding frame having at least three mounting holes; A back top, each end of the back top has a first connecting tube, and the two first connecting tubes are respectively inserted into the two adjacent mounting holes; an attachment tube, the attachment tube being disposed on an outer side of the first connecting tube; The armrest has a second connecting tube at each end, wherein one of the second connecting tubes is inserted into the other mounting hole, and the other of the second connecting tubes is inserted into the attachment tube.

2. The foldable chair frame according to claim 1, wherein Also includes: At least four elastic clips, each of which has at least one abutting end, two of the elastic clips are respectively arranged in the two first connecting tubes, and the other two elastic clips are respectively arranged in the two second connecting tubes; wherein, the first connecting tube and the second connecting tube are both provided with a limiting hole in the radial direction, and the abutting end passes through the limiting hole and is abutted against the folding frame or the attachment tube.

3. The foldable chair frame according to claim 2, wherein: Each of the elastic clamps includes an elastic member and a limiting bead. The elastic member is elastically deformably disposed in the first connecting tube or the second connecting tube. The limiting bead is connected to the elastic member and matches the limiting hole.

4. The foldable chair frame according to claim 3, wherein The folding frame is provided with three first locking holes, the attachment tube is provided with a second locking hole, the limiting beads pass through the limiting holes and engage with the first locking hole or the second locking hole.

5. The foldable chair frame according to claim 4, wherein: The folding frame includes: three first tubes, a second tube and a folding assembly. The three first tubes and one second tube are arranged in a rectangular array. The three first tubes and one second tube are connected to the folding assembly. The upper end of the first tube is provided with the mounting hole along the axial direction, and the upper end of the first tube is provided with the first clamping hole along the radial direction.

6. The foldable chair frame according to claim 5, wherein: Also includes: Four support tubes are arranged in sequence along the circumference of the folding assembly, one end of each support tube is connected to the first tube, and the other end of the support tube is connected to the first tube or the second tube.

7. The foldable chair frame according to claim 5, wherein: Also includes: Two steel wire rope assemblies, wherein the two ends of one steel wire rope assembly are connected to two first tubes arranged diagonally, and the two ends of the other steel wire rope assembly are respectively connected to the other first tube and the second tube.

8. The foldable chair frame according to claim 5, wherein: The folding assembly includes: four first corner pieces, four second corner pieces and four folding frames, the four first corner pieces are arranged in a rectangular array, the four second corner pieces are arranged in a rectangular array, each first corner piece is arranged above a second corner piece, the first tube can movably pass through a first corner piece and be connected to the second corner piece, the second tube can movably pass through a first corner piece and be connected to the second corner piece, the two ends of the upper part of each folding frame are respectively connected to two adjacent first corner pieces, and the two ends of the lower part of each folding frame are respectively connected to two adjacent second corner pieces.

9. The foldable chair frame according to claim 8, wherein The folding frame includes: a first folding member and a second folding member, the middle part of the first folding member and the middle part of the second folding member are hinged, the two ends of the first folding member are respectively hinged to a first corner member and a second corner member, and the two ends of the second folding member are respectively hinged to another second corner member and another first corner member.

10. The foldable chair frame according to claim 9, wherein The first corner piece and the second corner piece each have a first hinge groove and a second hinge groove, the end of the first folding piece is connected to the first hinge groove, and the end of the second folding piece is connected to the second hinge groove.

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