Folding chair with slotted telescopic structure

Abstract

The folding chair comprises a chair frame and a chair cover, the chair frame comprises a front foot supporting tube, a seat tube and a backrest supporting tube, the bottom end of the backrest supporting tube is rotatably connected with the tail end of the seat tube, the backrest supporting tube is further rotatably connected with an armrest part, the front foot supporting tube is respectively rotatably connected with the seat tube and the armrest part, and the seat tube is rotatably connected with the armrest part. The rear leg telescopic assembly comprises a rear leg telescopic pipe and a rear leg supporting pipe, a limiting groove is formed in the rear leg telescopic pipe, and the backrest supporting pipe, the limiting groove and the rear leg supporting pipe are movably connected through a rotating piece, so that the rear leg telescopic pipe telescopically moves relative to the rear leg supporting pipe; a rear cross support is rotatably arranged between the two backrest supporting pipes and the rear foot supporting pipe, and a front cross telescopic support is rotatably arranged between the two seat pipes and the front foot supporting pipe. The folding chair disclosed by the utility model can be folded in front, back, left and right directions, the storage volume of the folding chair is reduced, and the stability of the folding chair when the folding chair is unfolded for use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of home furnishings, in particular to a folding chair provided with a slotted telescopic structure. Background Art

[0002] Folding chairs are light, portable, and occupy a small area after folding, so they are widely used in various daily life and public places. In order to meet people's demand for the above advantages of folding chairs, various forms of structural composition have emerged, that is, the structure that switches between the folded state and the unfolded state by linking the supporting tubes constituting the chair frame.

[0003] For example, the folding chair frame and folding chair with publication number CN218852270U, ​​the folding chair frame is provided with a pivot seat, and the connecting rod assembly connected to the front leg tube is connected to the second end of the pivot seat, so that the connection position of the connecting rod assembly and the front leg tube can be moved when the folding chair frame is in the unfolded state and the folded state, specifically, it is located below the connection point in the unfolded state relative to the front leg tube in the folded state, thereby helping to shorten the height of the chair frame in the folded state.

[0004] However, the folding chair frame needs to be unfolded through a pivot seat and multiple sets of hinged connections, which requires more structures. The multiple sets of hinged connections may also be weak and unstable, which will affect the load-bearing effect of the folding chair when in use. Utility Model Content

[0005] The purpose of the utility model is to provide a folding chair with a slotted telescopic structure to solve the problem that the folding chair in the prior art requires many accessories, especially requires the cooperation of multiple sets of hinged connection structures, which are prone to problems of connection firmness and stability, thereby affecting the use effect of the chair.

[0006] In order to solve the above technical problems, the utility model is implemented through the following technical solutions:

[0007] A folding chair with a slotted telescopic structure comprises a chair frame, a chair cover being detachably connected to the chair frame, the chair frame comprising a front leg support tube, a seat tube and a backrest support tube, and two of them are symmetrically arranged, the bottom end of the backrest support tube is rotatably connected to the tail end of the seat tube, the backrest support tube is also rotatably connected to an armrest, the front leg support tube is rotatably connected to the seat tube and the armrest respectively, and also comprises a rear leg telescopic assembly, the rear leg telescopic assembly comprises a detachably connected rear leg telescopic tube and a rear leg support tube, a limiting groove is arranged on the rear leg telescopic tube, the backrest support tube, the limiting groove and the rear leg support tube are movably connected via a rotating member, so that one end of the rear leg telescopic tube is rotatably connected to the armrest, and the other end is telescopically moved relative to the rear leg support tube, a rear cross bracket is rotatably arranged between the two backrest support tubes and the rear leg support tube, and a front cross telescopic bracket is rotatably arranged between the two seat tubes and the front leg support tube.

[0008] Preferably, a rubber inner sleeve is provided on the rear leg telescopic tube, and the rubber inner sleeve is located above the limiting groove, a clamping block is provided on the outer wall of the rubber inner sleeve, and a clamping slot is provided on the rear leg supporting tube corresponding to the clamping block, and the surface of the clamping block is an inclined surface which is wide at the top and narrow at the bottom.

[0009] Preferably, the above-mentioned rear cross bracket includes two rear cross tubes, both ends of which are movably provided with L-shaped rotating pieces, and the upper L-shaped rotating piece is connected to the connecting piece of the backrest support tube through a gasket, and the lower L-shaped rotating piece is connected to the rear leg support tube through a gasket.

[0010] Preferably, the above-mentioned front cross telescopic bracket includes two front cross tubes and a support telescopic assembly, and both ends of the front cross tubes are movably provided with L-shaped rotating pieces, and the L-shaped rotating piece at the lower end is rotatably connected to the lower end of the support telescopic assembly and the front foot support tube in sequence through a gasket, and the L-shaped rotating piece at the upper end is connected to the seat tube through the support telescopic assembly.

[0011] Preferably, the above-mentioned supporting telescopic assembly includes a front vertical support tube, a front vertical telescopic tube, an H-shaped telescopic part and a fixing sleeve, the L-shaped rotating piece at the upper end of the front cross tube is connected to the seat tube through the H-shaped telescopic part, one end of the front vertical telescopic tube is rotatably connected to the H-shaped telescopic part, and the other end is sleeved in the front vertical support tube for telescopic movement, and the position is fixed by the fixing sleeve.

[0012] Preferably, the bottom end of the above-mentioned backrest support tube is rotatably connected to the tail end of the seat tube via a duckbill-shaped iron piece, the armrest piece includes an armrest plate and an armrest fixing seat, and the front leg support tube, rear leg telescopic tube and backrest support tube are rotatably connected to the armrest fixing seat respectively.

[0013] Preferably, the lower ends of the front foot support tube and the rear foot support tube are both provided with foot pads.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] (1) The folding chair of the utility model has a simple structure. Through the cooperation of the rear leg telescopic assembly, the rear cross bracket and the front cross telescopic bracket, the folding chair can be folded in the front, back, left and right directions, which greatly reduces the storage volume of the folding chair. At the same time, the armrest can be supported at multiple angles, thereby improving the stability of the folding chair when it is unfolded for use.

[0016] (2) The rear foot telescopic assembly and the front cross telescopic bracket are both telescopic tube structures, which are easy to assemble and the telescopic process is simple and not prone to problems such as jamming. This facilitates the folding and unfolding of the folding chair and also improves the stability of the folding chair when it is unfolded;

[0017] (3) The rear cross support directly connects the rear leg support tube and the backrest support tube, which improves the stability of the folding chair when it is unfolded, and can also directly drive the rear leg support tube and the backrest support tube to work, thereby improving the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the chair frame of the utility model when it is unfolded (1);

[0019] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0020] Figure 3 This is a schematic diagram of the structure of the chair frame of the utility model when it is folded;

[0021] Figure 4 It is a structural schematic diagram of the rear telescopic assembly of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the supporting telescopic assembly in the utility model;

[0023] Figure 6 It is a structural schematic diagram of the armrest member in the utility model;

[0024] Figure 7 It is a side view structural schematic diagram of the chair frame of the utility model when it is unfolded;

[0025] Figure 8 This is a schematic diagram of the three-dimensional structure of the chair frame of the utility model when it is unfolded (2);

[0026] Fig. 9 This is a front view structural diagram of the utility model when the chair frame is unfolded;

[0027] Fig.10 It is a schematic diagram of the structure of the utility model when the chair frame is unfolded.

[0028] In the figure: 1-front leg support tube; 2-seat tube; 3-backrest support tube; 4-rear leg telescopic tube; 5-rear leg support tube; 6-rubber inner sleeve; 7-rear cross tube; 8-connecting piece; 9-front cross tube; 10-front vertical support tube; 11-front vertical telescopic tube; 12-H-type telescopic piece; 13-fixing sleeve; 14-duckbill iron piece; 15-armrest plate; 16-armrest fixing seat; 17-foot pad; 18-L-type rotating piece; gasket-19; 401-limiting groove; 501-bayonet; 601-block; 1601-installation groove; 1602-bending clamp. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figure 1-10 As shown, a folding chair with a slotted telescopic structure includes a chair frame with a chair cover detachably connected to the chair frame, the chair frame includes a front leg support tube 1, a seat tube 2 and a backrest support tube 3, and two of them are symmetrically arranged, the bottom end of the backrest support tube 3 is rotatably connected to the tail end of the seat tube 2, the backrest support tube 3 is also rotatably connected to an armrest, the front leg support tube 1 is rotatably connected to the seat tube 2 and the armrest, respectively, and also includes a rear leg telescopic assembly, the rear leg telescopic assembly includes a detachably connected rear leg telescopic tube 4 and a rear leg support tube 5, a limiting groove 401 is provided on the rear leg telescopic tube 4, the backrest support tube 3, the limiting groove 401 and the rear leg support tube 5 are movably connected by a rotating member (which can be a rivet), so that one end of the rear leg telescopic tube 4 is rotatably connected to the armrest, and the other end is telescopically moved relative to the rear leg support tube 5, a rear cross bracket is rotatably arranged between the two backrest support tubes 3 and the rear leg support tube 5, and a front cross telescopic bracket is rotatably arranged between the two seat tubes 2 and the front leg support tube 1.

[0031] The folding chair of the utility model has a simple structure. The folding chair can be folded in the front, rear, left and right directions through the cooperation of the rear leg telescopic assembly, the rear cross bracket and the front cross telescopic bracket, which greatly reduces the storage volume of the folding chair and can also provide multi-angle support for the armrests, thereby improving the stability of the folding chair when it is unfolded and used; the rear leg telescopic assembly and the front cross telescopic bracket are both telescopic tube structures, which are convenient for assembly, and the telescopic process is also simple and not prone to problems such as jamming, which is convenient for folding and unfolding of the folding chair and can also improve the use stability of the folding chair when it is unfolded; the rear cross bracket is directly connected to the rear leg support tube 5 and the backrest support tube 3, which improves the stability of the folding chair when it is unfolded, and can also directly drive the rear leg support tube 5 and the backrest support tube 3 to work, thereby improving the convenience of operation.

[0032] Specifically, a rubber inner sleeve 6 is sleeved on the rear foot telescopic tube 4, and the rubber inner sleeve 6 is located above the limiting groove 401, a clamping block 601 is arranged on the outer wall of the rubber inner sleeve 6, and a bayonet 501 is arranged on the rear foot support tube 5 corresponding to the clamping block 601, and the surface of the clamping block 601 is arranged in an inclined surface with a width at the top and a narrowness at the bottom. With the above design, when the folding chair is unfolded for use, the rear foot telescopic tube 4 and the rear foot support tube 5 are fixed by the rubber inner sleeve 6, thereby improving the use stability of the folding chair. When the folding chair needs to be folded, the clamping block 601 is squeezed hard to separate it from the bayonet 501, so that the rear foot telescopic tube 4 can be moved upward to achieve the folding operation.

[0033] Specifically, the rear cross bracket includes two rear cross tubes 7, both ends of the rear cross tubes 7 are movably provided with L-shaped rotating pieces 18, and the upper L-shaped rotating piece 18 is connected to the connecting piece 8 (the connecting piece 8 can be a U-shaped connecting piece) of the backrest support tube 3 through a gasket, and the lower L-shaped rotating piece 18 is connected to the rear leg support tube 5 through a gasket. The above design has a simple structure, is convenient for the synchronous linkage work between the rear cross bracket, the backrest support tube 3 and the rear leg support tube 5, and is convenient for the folding and unfolding of the folding chair.

[0034] Specifically, the front cross telescopic bracket includes two front cross tubes 9 and a support telescopic assembly. Both ends of the front cross tube 9 are movably provided with L-shaped rotating pieces 18, and the L-shaped rotating piece 18 at the lower end is rotatably connected to the lower end of the support telescopic assembly and the front foot support tube 1 in sequence through a gasket, and the L-shaped rotating piece 18 at the upper end is connected to the seat tube 2 through the support telescopic assembly. The support telescopic assembly includes a front vertical support tube 10, a front vertical telescopic tube 11, an H-shaped telescopic member 12 and a fixing sleeve 13. The L-shaped rotating piece 18 at the upper end of the front cross tube 9 is connected to the seat tube 2 through the H-shaped telescopic member 12. One end of the front vertical telescopic tube 11 is rotatably connected to the H-shaped telescopic member 12, and the other end is sleeved in the front vertical support tube 10 for telescopic movement, and the position is fixed by the fixing sleeve 13. The above design can improve the support strength between the front foot support tube and the seat tube 3 through the front cross telescopic bracket, thereby improving the use stability of the entire folding chair and facilitating the folding operation of the entire folding chair.

[0035] Specifically, the bottom end of the backrest support tube 3 is rotatably connected to the tail end of the seat tube 2 through a duckbill iron piece 14, the armrest piece includes an armrest board 15 and an armrest fixing seat 16, and the front leg support tube 1, the rear leg telescopic tube 4 and the backrest support tube 3 are rotatably connected to the armrest fixing seat 16. The above design facilitates the connection between the various accessories, improves the connection firmness and stability, and thus facilitates the folding and unfolding operation of the folding chair. The armrest fixing seat 16 can be provided with a mounting groove 1601 for connecting the front leg support tube 1 and the rear leg telescopic tube 4, one end of the mounting groove 1601 is connected to the backrest support tube 3, and a bending clamp 1602 is formed at one end of the outer bottom of the mounting groove 1601. The armrest board 15 is placed on the outer bottom of the mounting groove 1601 and is detachably fixed by the bending clamp 1602, so that the armrest board 15 is convenient to replace.

[0036] Specifically, the lower ends of the front foot support tube 1 and the rear foot support tube 5 are sleeved with foot pads 17. The above design can improve the support stability when the folding chair is unfolded and used. In order to increase the friction between the foot pad 17 and the supporting surface, anti-slip patterns can be designed on the bottom of the foot pad 17. The foot pad 17 is directly extruded and installed, and can be directly replaced in case of wear and tear, thereby ensuring the overall use effect of the folding chair.

[0037] Furthermore, in order to shorten the folding height of the folding chair, the upper end of the backrest support tube 3 can be bent downward at a certain angle; in order to improve the comfort of use, the backrest support tube 3, the seat tube 2, the rear cross tube 7 and the front leg support tube 1 can all be designed with different bending angles; at the same time, according to the use requirements, different forms of seat covers can be installed on the chair frame to form the required folding chair.

[0038] It should be noted that the L-shaped rotating pieces 18 at the above-mentioned connecting positions have the same structure, and the gaskets 19 have the same structure, so as to improve the versatility of the accessories.

[0039] When the folding chair is unfolded for use, the two backrest support tubes 3 are first pulled outward, and the two rear foot support tubes 5 are driven to unfold through the rear cross bracket, and then the two front cross tubes 9 are driven to unfold at the same time, and then the armrest board 15 is pressed downward. During the downward pressing process, the angle formed by the front foot support tube 1 and the rear foot support tube 5 gradually increases. At this time, the rear foot telescopic tube 4 also gradually extends into the rear foot support tube 5 until the bayonet 501 on the rear foot support tube 5 is snapped into the block 601 on the rubber inner sleeve 6 to fix the position. At this time, the rivet penetrated on the limiting groove 401 is just stuck at the top end of the limiting groove 401. At the same time, the front vertical telescopic tube 11 also gradually extends into the front vertical support tube 10, and the two are fixed by the fixing sleeve 13, and finally the folding chair is fully unfolded.

[0040] When folding is required, first squeeze the block 601 hard to disengage it from the bayonet 501, so that the fixing sleeve 13 is disengaged from the front vertical telescopic tube 11, and then rotate the armrest plate 15 upward to complete the folding of the folding chair in the front and rear directions, and then retract the backrest support tube 3 inward to complete the folding of the folding chair in the left and right directions, that is, the overall folding of the folding chair is completed.

[0041] The above are only preferred embodiments of the present invention, and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art 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 folding chair with a slotted telescopic structure, comprising a chair frame, a chair cover detachably connected to the chair frame, the chair frame comprising a front leg support tube, a seat tube and a backrest support tube, and two of each tube are symmetrically arranged, characterized in that: The bottom end of the backrest support tube is rotatably connected to the rear end of the seat tube, and the backrest support tube is also rotatably connected to an armrest member. The front foot support tube is rotatably connected to the seat tube and the armrest member respectively, and also includes a rear foot telescopic assembly, the rear foot telescopic assembly includes a detachably connected rear foot telescopic tube and a rear foot support tube, a limiting groove is provided on the rear foot telescopic tube, the backrest support tube, the limiting groove and the rear foot support tube are movably connected through a rotating member, so that one end of the rear foot telescopic tube is rotatably connected to the armrest member, and the other end is telescopically moved relative to the rear foot support tube, a rear cross bracket is rotatably arranged between the two backrest support tubes and the rear foot support tube, and a front cross telescopic bracket is rotatably arranged between the two seat tubes and the front foot support tube.

2. A folding chair with a slotted telescopic structure according to claim 1, characterized in that: The rear foot telescopic tube is sleeved with a rubber inner sleeve, and the rubber inner sleeve is located above the limiting groove. A clamping block is arranged on the outer wall of the rubber inner sleeve, and a clamping port is arranged corresponding to the clamping block on the rear foot supporting tube. The surface of the clamping block is arranged in an inclined surface which is wide at the top and narrow at the bottom.

3. The folding chair with a slotted telescopic structure according to claim 1, characterized in that: The rear cross bracket includes two rear cross tubes, both ends of which are movably provided with L-shaped rotating pieces, and the upper L-shaped rotating piece is connected to the connecting piece of the backrest support tube through a gasket, and the lower L-shaped rotating piece is connected to the rear leg support tube through a gasket.

4. The folding chair with a slotted telescopic structure according to claim 1, characterized in that: The front cross telescopic bracket includes two front cross tubes and a support telescopic assembly. Both ends of the front cross tubes are movably provided with L-shaped rotating pieces, and the L-shaped rotating piece at the lower end is rotatably connected to the lower end of the support telescopic assembly and the front foot support tube in sequence through a gasket, and the L-shaped rotating piece at the upper end is connected to the seat tube through the support telescopic assembly.

5. The folding chair with a slotted telescopic structure according to claim 4, characterized in that: The support telescopic assembly includes a front vertical support tube, a front vertical telescopic tube, an H-shaped telescopic member and a fixing sleeve. The L-shaped rotating piece at the upper end of the front cross tube is connected to the seat tube through the H-shaped telescopic member. One end of the front vertical telescopic tube is rotatably connected to the H-shaped telescopic member, and the other end is sleeved in the front vertical support tube for telescopic movement, and the position is fixed by the fixing sleeve.

6. The folding chair with a slotted telescopic structure according to claim 1, characterized in that: The bottom end of the backrest support tube is rotatably connected to the tail end of the seat tube via a duckbill iron piece; the armrest piece comprises an armrest plate and an armrest fixing seat; the front leg support tube, the rear leg telescopic tube and the backrest support tube are rotatably connected to the armrest fixing seat respectively.

7. The folding chair with a slotted telescopic structure according to claim 1, characterized in that: The lower ends of the front foot support tube and the rear foot support tube are both sleeved with foot pads.

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