Framework structure of chair and sofa chair

Abstract

The framework structure comprises a back pipe assembly and a foldable foot pipe assembly, a connecting piece is arranged between the back pipe assembly and the foot pipe assembly, the connecting piece is provided with a supporting groove, one end, facing the foot pipe assembly, of the back pipe assembly is detachably assembled in the supporting groove, and the other end of the back pipe assembly is detachably assembled in the supporting groove. The end, facing the back pipe assembly, of the foot pipe assembly is fixed to the connecting piece, an opening extending in the axial direction of the supporting groove is formed in one side of the supporting groove so that the groove walls on the two sides of the opening of the supporting groove can elastically and tightly hold the back pipe assembly, and therefore disassembly and assembly between the back pipe assembly and the foot pipe assembly can be achieved through the connecting piece, and the foot pipe assembly can be folded. And after the whole body is disassembled and the foot tube assembly is folded, the overall occupied space can be effectively reduced, so that the portable foot tube is convenient to carry outdoors, and meanwhile, the indoor and outdoor use requirements of a user are met.

Description

Technical Field

[0001] The utility model relates to the technical field of chairs, in particular to a chair skeleton structure and a sofa chair. Background Art

[0002] A sofa chair is a leisure chair designed according to ergonomics. Currently, most sofa chairs on the market can only be used indoors. For example, the sofa chair described in utility model patent CN214207796U has a bulky structure and is difficult to carry outdoors because it cannot be disassembled as a whole. Therefore, it cannot meet the user's indoor and outdoor use needs at the same time. Utility Model Content

[0003] To this end, in order to solve the above-mentioned problems, the utility model provides a chair skeleton structure and a sofa chair, which can realize the disassembly and assembly between the back tube assembly and the leg tube assembly through a connecting piece, and the leg tube assembly can be folded. After the entire assembly is disassembled and the leg tube assembly is folded, the overall occupied space can be effectively reduced, thereby facilitating carrying outside, while meeting the user's indoor and outdoor use needs.

[0004] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0005] The utility model provides a chair skeleton structure, comprising a back tube assembly and a foldable leg tube assembly; a connecting piece is arranged between the back tube assembly and the leg tube assembly, the connecting piece has a supporting groove, one end of the back tube assembly facing the leg tube assembly is detachably assembled in the supporting groove, and one end of the leg tube assembly facing the back tube assembly is fixed to the connecting piece; one side of the supporting groove has an opening extending along its axial direction, so that the groove walls on both sides of the opening of the supporting groove can elastically embrace the back tube assembly.

[0006] Furthermore, the connecting member has a transverse support tube and a longitudinal support tube which are fixedly connected to each other, the circumferential tube wall of the transverse support tube is provided with a through notch connected to its inner cavity, and the through notch of the transverse support tube extends along its axial direction, the inner cavity of the transverse support tube is the support groove, and the through notch is the opening of the support groove; one end of the back tube assembly toward the leg tube assembly can be slidably inserted into the inner cavity of the transverse support tube, and one end of the leg tube assembly toward the back tube assembly is inserted and fixed in the longitudinal support tube.

[0007] Furthermore, a fastener is provided between the connecting member and the back tube assembly; when unfolded, the fastener applies a pre-tightening force to the groove walls on both sides of the opening of the support groove so that the groove walls on both sides of the opening of the support groove hold the back tube assembly tightly.

[0008] Furthermore, the leg tube assembly includes hinged leg tubes, and the back tube assembly includes back tubes arranged at intervals; each back tube is respectively provided with connecting parts arranged in the front and rear, and one end of the back tube facing the leg tube can be slidably inserted into a supporting groove of the corresponding connecting part, and one end of the leg tube facing the back tube is fixed to the corresponding connecting part.

[0009] Furthermore, the leg tube has two symmetrically arranged support tubes for supporting on the ground and a transverse connecting tube fixedly connected between the two support tubes, and the centers of the transverse connecting tubes of the two leg tubes are hinged to form a foldable arrangement.

[0010] Furthermore, the leg tube assembly also includes a first connecting tube and a second connecting tube arranged at the front and rear; one end of the first connecting tube and the second connecting tube is detachably sleeved on the end of the support tube facing away from the ground, and the other end of the first connecting tube and the second connecting tube is fixed to the corresponding connecting piece.

[0011] Furthermore, the first connecting tube and the second connecting tube extend in an upward and downward direction, and the length of the first connecting tube is smaller than the length of the second connecting tube.

[0012] Furthermore, the connecting member includes a front connecting member and a rear connecting member, the front connecting member corresponds to the first connecting tube, and the rear connecting member corresponds to the second connecting tube.

[0013] Furthermore, one end of the support tube facing the ground is equipped with a foot pad.

[0014] The utility model also provides a sofa chair, comprising a soft cushion and the above-mentioned chair frame structure, wherein the soft cushion is detachably sleeved on the chair frame structure.

[0015] The technical solution provided by the utility model has the following beneficial effects:

[0016] One side of the support groove has an opening extending along its axial direction, so that the groove walls on both sides of the opening of the support groove can elastically embrace the back tube assembly to cooperate with the back tube assembly to be detachably assembled in the support groove of the connecting piece, so that the back tube assembly and the leg tube assembly can be disassembled and assembled, and the leg tube assembly can be folded. After the overall disassembly and folding of the leg tube assembly, the overall occupied space can be effectively reduced, making it easier to carry outside, while meeting the user's indoor and outdoor usage needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure shows a schematic structural diagram of the skeleton structure of the chair in the first embodiment;

[0018] Figure 2The figure shows a connection diagram of the back tube, the connecting piece, the first connecting tube and the second connecting tube in the first embodiment;

[0019] Figure 3 Shown is a schematic diagram of the front connecting member in the first embodiment;

[0020] Figure 4 Shown is a schematic diagram of the rear connecting member in the first embodiment;

[0021] Figure 5 The figure shows the appearance of the skeleton structure of the chair in the first embodiment;

[0022] Figure 6 The figure shows the appearance of the sofa chair in the second embodiment. DETAILED DESCRIPTION

[0023] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0024] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0025] Embodiment 1

[0026] Reference Figure 1 and Figure 5 As shown, the first embodiment provides a frame structure of a chair, including a back tube assembly 1 and a foldable leg tube assembly 2, a connecting piece is arranged between the back tube assembly 1 and the leg tube assembly 2, and the connecting piece has the following features: Figure 3 and Figure 4 The support groove 6 shown in the figure has one end of the back tube assembly 1 facing the leg tube assembly 2 detachably assembled in the support groove 6, and one end of the leg tube assembly 2 facing the back tube assembly 1 is fixed to the connecting piece, and one side of the support groove 6 has an opening 61 extending along its axial direction so that the groove walls on both sides of the opening 61 of the support groove 6 can elastically embrace the back tube assembly 1.

[0027] In this embodiment, the connecting member has a transverse support tube 31 and a longitudinal support tube 32 that are fixedly connected to each other. The circumferential tube wall of the transverse support tube 31 is provided with a through notch connected to its inner cavity, and the through notch of the transverse support tube 31 extends along its axial direction. The inner cavity of the transverse support tube 31 is the support groove 6, and the through notch is the opening 61 of the support groove 6. One end of the back tube assembly 1 facing the leg tube assembly 2 can be slidably inserted into the inner cavity of the transverse support tube 31, and one end of the leg tube assembly 2 facing the back tube assembly 1 is inserted and fixed in the longitudinal support tube 32.

[0028] A fastener, such as a screw, is provided between the connector and the back tube assembly 1. Figure 5 When unfolded as shown, the tightened fastener applies a pre-tightening force to the groove walls on both sides of the opening 61 of the support groove 6, so that the groove walls on both sides of the opening 61 of the support groove 6 hold the back tube assembly 1 tightly to achieve stable support.

[0029] When the back tube assembly 1 and the leg tube assembly 2 need to be separated, the fastener is first loosened, and then the back tube of the back tube assembly 1 is pulled out from the supporting groove 6 of the connector to achieve detachability between the back tube assembly 1 and the leg tube assembly 2 .

[0030] Furthermore, because the support groove 6 has an opening 61, the groove walls on both sides of the opening 61 of the support groove 6 have a certain elastic deformation ability, and under the action of a certain external force, the groove walls on both sides of the opening 61 of the support groove 6 can open outward, which is more convenient for the user to pass the back tube 11 of the back tube assembly 1 through or pull it out from the support groove 6 of the connecting piece, so as to realize the rapid disassembly and assembly of the back tube assembly 1 and the leg tube assembly 2 through the connecting piece.

[0031] One side of the support groove 6 has an opening 61 extending along its axial direction, so that the groove walls on both sides of the opening 61 of the support groove 6 can elastically embrace the back tube assembly 1, so as to cooperate with the back tube assembly 1 to be detachably assembled in the support groove 6 of the connecting piece, so that the disassembly and assembly between the back tube assembly 1 and the leg tube assembly 2 can be realized, and the leg tube assembly 2 can be folded. After the overall disassembly and folding of the leg tube assembly 2, the overall occupied space can be effectively reduced, thereby facilitating carrying outside, while meeting the user's indoor and outdoor use needs.

[0032] In another preferred embodiment, Figure 1 As shown, the leg tube assembly 2 includes hinged leg tubes 21, and the back tube assembly 1 includes back tubes 11 arranged at a distance, and the two back tubes 11 are arranged parallel to each other. Each back tube 11 is respectively sleeved with connecting parts arranged in front and rear. One end of the back tube 11 facing the leg tube 21 can be slidably penetrated into the supporting groove 6 of the corresponding connecting part, and one end of the leg tube 21 facing the back tube 11 is fixed to the corresponding connecting part.

[0033] More specifically, the leg tube 21 has two symmetrically arranged support tubes 211 for supporting on the ground and a transverse connecting tube 212 fixedly connected between the two support tubes 211. The end of the support tube 211 facing the ground is equipped with a foot pad 8, and the centers of the transverse connecting tubes 212 of the two leg tubes 21 are hinged to form a foldable arrangement. When it is necessary to carry it out, the user can conveniently fold the two leg tubes 21 into a straight line to further reduce the occupied space.

[0034] like Figure 1 and Figure 2As shown, the leg tube assembly 2 also includes a first connecting tube 22 and a second connecting tube 23 arranged at the front and rear. One end of the first connecting tube 22 and the second connecting tube 23 can be detachably sleeved on the end of the support tube 211 facing away from the ground, and the other ends of the first connecting tube 22 and the second connecting tube 23 are fixed to the corresponding connecting pieces. When disassembling, it is convenient for the user to first separate the first connecting tube 22 and the second connecting tube 23 from the corresponding leg tubes 21 one by one, and then separate the connecting pieces from the back tube 11. At this time, the first connecting tube 22 and the second connecting tube 23 are respectively connected to the corresponding connecting pieces to form two independent connecting tube assemblies containing connecting pieces, so as to further facilitate storage.

[0035] In a specific implementation, the number of the first connecting tube 22, the second connecting tube 23 and the back tube 11 is two, the number of the connecting pieces is four, and the four connecting pieces are divided into two parts. Figure 3 The front connecting member 3 shown and the two Figure 4 The rear connecting members 4 shown are respectively a first front connecting member, a second front connecting member, a first rear connecting member and a second rear connecting member.

[0036] like Figure 3 As shown, the included angle between the transverse support tube 31 and the longitudinal support tube 32 of the first front connecting member and the included angle between the transverse support tube 31 and the longitudinal support tube 32 of the second front connecting member are both 90 degrees, forming a T shape.

[0037] like Figure 4 As shown, the angle between the transverse support tube 31 and the longitudinal support tube 32 of the first rear connecting member and the angle between the transverse support tube 31 and the longitudinal support tube 32 of the second rear connecting member are both 0 to 90 degrees, that is, they are arranged in an oblique cross.

[0038] The first connecting tube 22 and the second connecting tube 23 extend in the upward and downward directions, and the tube length of the first connecting tube 22 is smaller than the tube length of the second connecting tube 23, and the two first connecting tubes 22 correspond one-to-one to the first front connecting piece and the second front connecting piece, and the two second connecting tubes 23 correspond one-to-one to the first rear connecting piece and the second rear connecting piece, so that the back tube assembly 1 has a more ergonomic backrest effect.

[0039] Embodiment 2

[0040] Reference Figure 6 As shown, the second embodiment provides a sofa chair, comprising a cushion 5 and the frame structure 7 of the chair of the first embodiment, wherein the cushion 5 is detachably mounted on the frame structure 7 of the chair.

[0041] When the user needs to carry the sofa chair outdoors, first remove the cushion 5 from the chair's frame structure 7 as a whole, then separate the first connecting tube and the second connecting tube from the corresponding leg tubes one by one, then loosen the fasteners between the connector and the back tube, and then pull out the connecting tube assemblies containing the connectors from the corresponding back tubes one by one to separate the back tube assembly and the leg tube assembly, and fold the two leg tubes together, and finally store the cushion 5, the back tube, the folded leg tubes, and the connecting tube assembly containing the connectors respectively, which can effectively reduce the overall occupied space and facilitate carrying.

[0042] In addition, the structure of the entire sofa chair is simple, the weight of each component is relatively light, and the overall disassembly and assembly operation is simple and convenient, while meeting the user's indoor and outdoor use needs.

[0043] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A chair skeleton structure, characterized in that: It includes a back tube assembly and a foldable leg tube assembly; A connecting piece is provided between the back tube assembly and the leg tube assembly, the connecting piece having a supporting groove, one end of the back tube assembly facing the leg tube assembly is detachably assembled in the supporting groove, and one end of the leg tube assembly facing the back tube assembly is fixed to the connecting piece; One side of the support groove has an opening extending along the axial direction thereof, so that the groove walls on both sides of the opening of the support groove can elastically embrace the back pipe assembly.

2. The chair skeleton structure according to claim 1, characterized in that: The connecting piece comprises a transverse support tube and a longitudinal support tube which are fixedly connected to each other. The circumferential tube wall of the transverse support tube is provided with a through notch which is connected to its inner cavity, and the through notch of the transverse support tube extends along its axial direction. The inner cavity of the transverse support tube is the support groove, and the through notch is the opening of the support groove. One end of the back tube assembly facing the leg tube assembly can be slidably inserted into the inner cavity of the transverse support tube, and one end of the leg tube assembly facing the back tube assembly is inserted and fixed in the longitudinal support tube.

3. The chair skeleton structure according to claim 1, characterized in that: A fastener is provided between the connecting member and the back tube assembly; when unfolded, the fastener applies a pre-tightening force to the groove walls on both sides of the opening of the support groove, so that the groove walls on both sides of the opening of the support groove hold the back tube assembly tightly.

4. The frame structure of the chair according to any one of claims 1 to 3, characterized in that: The leg tube assembly includes hinged leg tubes, and the back tube assembly includes back tubes arranged at intervals; each back tube is respectively sleeved with connecting pieces arranged in front and rear, and one end of the back tube facing the leg tube can be slidably inserted into a supporting groove of the corresponding connecting piece, and one end of the leg tube facing the back tube is fixed to the corresponding connecting piece.

5. The chair frame structure according to claim 4, characterized in that: The leg tube has two symmetrically arranged support tubes for supporting on the ground and a transverse connecting tube fixedly connected between the two support tubes. The centers of the transverse connecting tubes of the two leg tubes are hinged to form a foldable arrangement.

6. The chair skeleton structure according to claim 5, characterized in that: The leg tube assembly also includes a first connecting tube and a second connecting tube arranged at the front and rear; one end of the first connecting tube and the second connecting tube is detachably sleeved on the end of the support tube facing away from the ground, and the other end of the first connecting tube and the second connecting tube is fixed to the corresponding connecting piece.

7. The chair frame structure according to claim 6, characterized in that: The first connecting tube and the second connecting tube extend in an upward and downward direction, and the tube length of the first connecting tube is smaller than the tube length of the second connecting tube.

8. The chair frame structure according to claim 7, characterized in that: The connecting member includes a front connecting member and a rear connecting member, the front connecting member corresponds to the first connecting tube, and the rear connecting member corresponds to the second connecting tube.

9. The chair skeleton structure according to claim 5, characterized in that: One end of the support tube facing the ground is equipped with a foot pad.

10. A sofa chair, characterized in that: The invention comprises a soft cushion and the frame structure of the chair as claimed in any one of claims 1 to 9, wherein the soft cushion is detachably mounted on the frame structure of the chair.

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