CN218246415U - Armchairs - Google Patents

Abstract

The utility model provides a armchair belongs to the furniture design field, include: two groups of side frames which are oppositely arranged; the bottom frame is arranged between the two groups of side frames, and two sides of the bottom frame are respectively buckled with the inner sides of the two groups of side frames; the front frame is arranged at the front sides of the two groups of side frames, and the two sides of the front frame are respectively buckled with the front sides of the two groups of side frames; the back frame is arranged on the back sides of the two groups of side frames, two sides of the lower end of the back frame are respectively buckled with the back sides of the two groups of side frames, and the height of the back frame is greater than that of the two groups of side frames; the seat surface is arranged on the top of the front frame, and the front side and the rear side are respectively buckled with the front frame and the back frame. The utility model discloses a seat, the two groups of side frames, bottom frame, front frame, back frame and seat surface of which are movably connected, form a detachable structure which is limited by each other through mutual buckling, the whole body is firm and stable, and the detachable structure is a plane part after being detached, thereby realizing flat packaging and reducing the transportation cost; when the seat is damaged, parts are convenient to replace, and meanwhile, the seat has certain interestingness due to the detachable structure, and the interactive experience of a user can be improved.

Description

Armchairs

Technical Field

The utility model belongs to the technical field of furniture design, concretely relates to armchair.

Background

The armchair is a general name of a back-rest chair with armrests, generally comprises a seat plate, armrests, supporting legs, a back rest and other parts, and is a popular comfortable seat. Armchairs are made of a lot of materials, such as metal materials, resin materials, bamboo materials and the like, and are usually wooden chairs.

The armchair of traditional solid wood frame structure is mostly of a fixed installation type, and is large in size and inconvenient to transport and maintain. The detachable solid wood armchairs are mainly combined by metal connecting pieces, the connecting pieces are often exposed outside, the attractiveness is affected, and at present, the detachable solid wood armchairs only adopt a wood structure as a detachable armchair form rarely.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects existing in the prior art, the utility model provides an armchair.

In order to achieve the above object, the present invention provides the following technical solutions:

an armchair, comprising:

two groups of side frames which are oppositely arranged;

the bottom frame is arranged between the two groups of side frames, and two sides of the bottom frame are respectively buckled with the inner sides of the two groups of side frames;

the front frame is arranged at the front sides of the two groups of side frames, and two sides of the front frame are respectively buckled with the front sides of the two groups of side frames;

the back frame is arranged on the back sides of the two groups of side frames, two sides of the lower end of the back frame are respectively buckled with the back sides of the two groups of side frames, and the height of the back frame is greater than that of the two groups of side frames;

the seat surface is arranged on the top of the front frame, and the front side and the rear side are respectively buckled with the front frame and the back frame.

Preferably, the side frame comprises two first upright columns which are oppositely arranged, and an armrest, a first support rod and a second support rod which are horizontally arranged between the two first upright columns at intervals from top to bottom;

the handrail is positioned on the inner sides of the top ends of the two first upright posts, and the second support rod is positioned on the inner sides of the two first upright posts close to the bottom ends; two ends of the handrail are connected with the first upright posts through the hand-lifting tenons, two ends of the first support rod and two ends of the second support rod are connected with the first upright posts through the straight tenons, and opposite surfaces of the outer sides of the two first upright posts extend outwards to form vertical clamping grooves;

opposite sides of the first support rod and the second support rod of the two groups of side frames extend outwards to form an upper clamping edge and a lower clamping edge;

the front frame is connected with the two vertical clamping grooves in the outer sides of the first stand columns in a buckled mode, the bottom frame is connected with the lower clamping edges of the second support rods in a buckled mode, and the seat face is connected with the upper clamping edges of the first support rods in a buckled mode.

Preferably, the underframe comprises two underframe fastening edges arranged oppositely and two underframe braces arranged at two ends of the underframe fastening edges, the underframe fastening edges and the underframe braces are connected through straight tenons, the outer sides of the bottoms of the underframe braces are inwardly contracted to form first horizontal clamping grooves matched with the two lower clamping edges, and the lower clamping edges of the side frames are respectively inserted into the first horizontal clamping grooves of the underframe braces.

Preferably, the front frame comprises two second upright columns which are arranged oppositely, and a first cross beam and a third support rod which are horizontally arranged between the two second upright columns;

the first cross beam is positioned on the inner sides of the top ends of the two second upright columns, and the third support rod is positioned on the inner sides of the two first upright columns close to the bottom ends;

two ends of the first cross beam and two ends of the third support rod are connected with the two second upright posts through straight tenons;

and a second horizontal clamping groove is formed in one side of the top of the first cross beam, and the outer sides of the two second upright posts extend towards one side far away from the second horizontal clamping groove to form a first vertical clamping edge matched with the vertical clamping groove in the outer side of the first upright post.

Preferably, the back frame comprises two third upright columns which are arranged oppositely, and a fourth support rod, a fifth support rod, a second cross beam and a sixth support rod which are horizontally arranged between the two third upright columns at intervals from top to bottom;

the fourth support rod is positioned on the inner sides of the top ends of the two third upright columns, and the sixth support rod is positioned on the inner sides of the two third upright columns close to the bottom ends; the fifth support rod and the second cross beam are positioned on the inner sides of the middle parts of the two third upright posts, and a gap is formed between the fifth support rod and the second cross beam; the fourth support rod is connected with the third upright post through a tenon, and the fifth support rod, the sixth support rod and the second cross beam are connected with the third upright post through straight tenons;

the distance from the second cross beam to the bottom of the third upright post is equal to the distance from the first cross beam to the bottom of the second upright post;

a third horizontal clamping groove is formed in one side of the top of the second cross beam, a notch communicated with the third horizontal clamping groove is formed in the middle of the second cross beam, and the outer sides of the two third upright posts extend towards one side far away from the third horizontal clamping groove to form a second vertical clamping edge matched with the vertical clamping groove on the rear side;

the rear side of the seat surface is buckled with the third horizontal clamping groove.

Preferably, a back board is further arranged between the fourth support rod and the fifth support rod, and two ends of the back board are respectively connected with the fourth support rod and the fifth support rod through straight tenons.

Preferably, the sitting surface comprises a middle sitting panel and side sitting panels arranged on two sides of the middle sitting panel and buckled with the middle sitting panel.

Preferably, the back board is a curved surface structure.

Preferably, the middle seat panel comprises a middle seat panel core plate, middle seat panel fastening edges arranged at two ends of the middle seat panel core plate and middle seat panel pulling edges arranged at two sides of the middle seat panel core plate;

the inner side of the stretched edge of the middle seat panel is provided with a limiting groove matched with the core of the middle seat panel, and the intersection of the buckled edge of the middle seat panel and the stretched edge of the middle seat panel is connected by a dovetail joint;

and two ends of the bottom of the middle seat panel buckling edge extend downwards to form a first horizontal clamping edge matched with the second horizontal clamping groove and the third horizontal clamping groove.

Preferably, the side seat panel comprises a side seat panel core plate, side seat panel fastening edges arranged at two ends of the side seat panel core plate and side seat panel pulling edges arranged at two sides of the side seat panel core plate;

the inner side of the drawing edge of the side seat panel is provided with a limit groove matched with the core of the side seat panel, and the intersection of the buckling edge of the side seat panel and the drawing edge of the side seat panel is connected by a dovetail joint;

the two ends of the buckling edge of the side seat panel extend downwards to form a second horizontal clamping edge matched with the second horizontal clamping groove and the third horizontal clamping groove, and the third horizontal clamping groove matched with the upper clamping edge is formed in one side of the drawing edge of the side seat panel.

The utility model provides a armchair has following beneficial effect:

the utility model discloses a seat, the connection modes of two groups of side frames, a bottom frame, a front frame, a back frame and a seat surface are movably connected, and the detachable structures which are limited by each other are formed by mutually buckling, so that the whole body is firm and stable, and the detachable structure is a planar part after being detached, thereby realizing flat packaging and reducing the transportation cost; the part is changed conveniently when damaging, through changing spare part maintenance can increase of service life, and dismantled and assembled structure makes this seat have certain interest simultaneously, can promote user's interactive experience nature.

Drawings

Fig. 1 is a schematic structural view of an armchair in embodiment 1 of the present invention;

FIG. 2 is a schematic structural view of a side frame;

FIG. 3 is a schematic structural view of the bottom frame;

FIG. 4 is a schematic structural diagram of a front frame;

FIG. 5 is a front view of the back frame;

FIG. 6 is a back structure view of the back frame;

FIG. 7 is a schematic structural view of a middle seat panel;

FIG. 8 is a schematic structural view of a side seat panel;

fig. 9 is a flow chart of the assembly of the armchair according to the embodiment.

Description of reference numerals:

the side frame comprises a side frame 1, a first upright post 11, an armrest 12, a first support rod 13, a second support rod 14, a vertical clamping groove 15, an upper clamping edge 16 and a lower clamping edge 17;

the bottom frame 2, a bottom frame buckle edge 21, a bottom frame brace 22, a bottom frame buckle edge 21 and a first horizontal clamping groove 23;

the front frame 3, the second upright column 31, the first cross beam 32, the third support rod 33, the second horizontal clamping groove 34 and the first vertical clamping edge 35;

the back frame 4, a third upright post 41, a fourth support rod 42, a fifth support rod 43, a second cross beam 44, a sixth support rod 45, a third horizontal clamping groove 46, a notch 47, a second vertical clamping edge 48 and a back board 49;

the seat surface 5, the middle seat panel core plate 51, the middle seat panel fastening edge 52, the middle seat panel pulling edge 53, the first horizontal clamping edge 54, the side seat panel core plate 55, the side seat panel fastening edge 56, the side seat panel pulling edge 57, the second horizontal clamping edge 58 and the fourth horizontal clamping groove 59.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely for the convenience of describing the technical solutions of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art. In the description of the present invention, unless otherwise specified, "a plurality" means two or more, and will not be described in detail herein.

Example 1

The utility model provides an armchair, as shown in figure 1 specifically, a front frame 3, a back frame 4, a bottom frame 2, a seat surface 5 and two sets of side frames 1. Specifically, two sets of side frames 1 are oppositely arranged; the bottom frame 2 is arranged between the two groups of side frames 1, and two sides of the bottom frame are respectively buckled with the inner sides of the two groups of side frames 1; the front frame 3 is arranged at the front sides of the two groups of side frames 1, and the two sides of the front frame are respectively buckled with the front sides of the two groups of side frames 1; the back frame 4 is arranged on the back sides of the two groups of side frames 1, two sides of the lower end of the back frame are respectively buckled with the back sides of the two groups of side frames 1, and the height of the back frame 4 is greater than that of the two groups of side frames 1; the seat surface 5 is arranged on the top of the front frame 3, and the front side and the rear side are respectively buckled with the front frame 3 and the back frame 4.

Further, as shown in fig. 2, in the present embodiment, the side frame 1 includes two first vertical columns 11 disposed oppositely, and an armrest 12, a first support rod 13, and a second support rod 14 disposed horizontally and at an interval from top to bottom between the two first vertical columns 11; the handrail 12 is positioned at the inner sides of the top ends of the two first upright posts 11, and the second support rod 14 is positioned at the inner sides of the two first upright posts 11 close to the bottom ends; two ends of the handrail 12 are connected with the first upright posts 11 through the tenon, two ends of the first support rod 13 and the second support rod 14 are connected with the first upright posts 11 through the straight tenon, and opposite surfaces of the outer sides of the two first upright posts 11 extend outwards to form vertical clamping grooves 15; opposite sides of the first support rod 13 and the second support rod 14 of the two groups of side frames 1 extend outwards to form an upper clamping edge 16 and a lower clamping edge 17; the two sides of the front frame 3 are respectively fastened with the vertical clamping grooves 15 on the outer sides of the two first upright posts 11, the two sides of the bottom frame 2 are respectively fastened with the lower clamping edges 17 of the second support rods 14, and the two sides of the seat surface 5 are respectively fastened with the upper clamping edges 16 of the first support rods 13.

Further, as shown in fig. 3, in the present embodiment, the bottom frame 2 includes two bottom frame fastening edges 21 disposed oppositely and two bottom frame pull bars 22 disposed at two ends of the two bottom frame fastening edges 21, the bottom frame fastening edges 21 and the bottom frame pull bars 22 are connected by straight tenons, the bottom outer sides of the two bottom frame pull bars 22 are shrunk inwards to form first horizontal slot grooves 23 matched with the two lower clip edges 17, and the lower clip edges 17 of the two sets of side frames 1 are respectively inserted into the first horizontal slot grooves 23 of the two bottom frame pull bars 22.

Further, as shown in fig. 4, in the present embodiment, the front frame 3 includes two second upright columns 31 disposed oppositely, and a first cross beam 32 and a third stay 33 disposed horizontally between the two second upright columns 31; the first cross beam 32 is positioned at the inner sides of the top ends of the two second upright columns 31, and the third support rod 33 is positioned at the inner sides of the two first upright columns 11 close to the bottom ends; the two ends of the first cross beam 32 and the third support rod 33 are connected with the two second vertical columns 31 through straight tenons; one side of the top of the first beam 32 is provided with a second horizontal clamping groove 34, and the outer sides of the two second upright posts 31 extend towards the side far away from the second horizontal clamping groove 34 to form a first vertical clamping edge 35 matched with the vertical clamping groove 15 on the outer side of the first upright post 11.

Further, as shown in fig. 5 and 6, in the present embodiment, the back frame 4 includes two third upright columns 41 arranged oppositely, and a fourth brace 42, a fifth brace 43, a second beam 44 and a sixth brace 45 arranged horizontally and at an interval from top to bottom between the two third upright columns 41; fig. 5 is a front structural view of the back frame 4, and fig. 6 is a back structural view of the back frame 4.

The fourth support rod 42 is positioned at the inner side of the top ends of the two third upright columns 41, and the sixth support rod 45 is positioned at the inner side of the two third upright columns 41 close to the bottom ends; the fifth support rod 43 and the second cross beam 44 are positioned at the inner sides of the middle parts of the two third vertical columns 41, and a gap is formed between the fifth support rod and the second cross beam; the fourth support rod 42 is connected with the third upright post 41 through a tenon, and the fifth support rod 43, the sixth support rod 45 and the second cross beam 44 are connected with the third upright post 41 through straight tenons; the distance from the second beam 44 to the bottom of the third upright 41 is equal to the distance from the first beam 32 to the bottom of the second upright 31.

As shown in fig. 6, the second beam 44 has a third horizontal slot 46 on one side of the top, a slot 47 in the middle for communicating with the third horizontal slot 46, and two third vertical posts 41 extend outward from one side far away from the third horizontal slot 46 to form a second vertical edge 48 for engaging with the rear vertical slot 15.

The rear side of the seat surface 5 is buckled with the third horizontal clamping groove 46.

Further, as shown in fig. 5 and 6, in the present embodiment, a back board 49 is further disposed between the fourth brace 42 and the fifth brace 43, and two ends of the back board 49 are respectively connected to the fourth brace 42 and the fifth brace 43 through straight tenons. The back board 49 of this embodiment is an ergonomically curved structure, i.e., an s-shaped structure.

The chair is stable and regular as a whole, is generous and not rigid, and gives people a sense of conciseness and quickness by adopting the straight line. The sitting height and the armrest height are in accordance with the ergonomics, the backrest plate 49 adopts an s-shaped curve, the waist support can be provided when a user has a rest, and certain changes of lines are avoided.

Further, in this embodiment, the seat surface 5 includes a middle seat panel and side seat panels disposed on two sides of the middle seat panel and fastened to the middle seat panel.

Further, as shown in fig. 7, in the present embodiment, the mid-seat panel includes a mid-seat panel core 51, mid-seat panel fastening edges 52 disposed at two ends of the mid-seat panel core 51, and mid-seat panel pulling edges 53 disposed at two sides of the mid-seat panel core 51.

The inner side of the drawing edge 53 of the middle seat panel is provided with a limit groove matched with the core of the middle seat panel, and the intersection of the buckling edge 52 of the middle seat panel and the drawing edge 53 of the middle seat panel adopts dovetail joint connection to enhance the pulling resistance of the structure;

the two ends of the bottom of the middle seat panel fastening edge 52 extend downwards to form a first horizontal clamping edge 54 which is matched with the second horizontal clamping groove 34 and the third horizontal clamping groove 46.

Further, as shown in fig. 8, in the present embodiment, the side seat panels include a side seat panel core 55, side seat panel fastening edges 56 disposed at two ends of the side seat panel core 55, and side seat panel pulling edges 57 disposed at two sides of the side seat panel core 55. The inner side of the edge 57 of the edge seat panel is provided with a limit groove matched with the core of the edge seat panel, and the intersection of the edge 56 of the edge seat panel and the edge 57 of the edge seat panel is connected by a dovetail joint; the two ends of the bottom of the side seat panel fastening edge 56 extend downwards to form a second horizontal clamping edge 58 matched with the second horizontal clamping groove 34 and the third horizontal clamping groove 46, and one side of the top of the side seat panel drawing edge 57 is provided with a fourth horizontal clamping groove 59 matched with the upper clamping edge 16.

Based on the above structure, the present embodiment specifically provides a seat of a wooden structure, the size of which is width × depth × height =590 × 530 × 950mm. Each chair leg is formed by buckling a second upright post 31 or a third upright post 41 belonging to the front frame 3 or the back frame 4 with a first upright post 11 belonging to the side frame 1. The bottom frame buckling edge 21 and the bottom frame brace 22 are buckled with corresponding support rods of the side frame 1, the front frame 3 and the back frame 4 respectively. The gap between the fifth stay 43 and the second beam 44 of the back frame 4 is the thickness of the middle seat panel fastening edge 52 and the side seat panel fastening edge 56, so that the fifth stay 43 limits the movement of the seat surface in the vertical direction after the seat surface 5 is installed, and the design requirement of the stability of the chair is met. In order to ensure the disassembly and assembly, a notch 47 is additionally arranged on the second beam 44 of the back frame 4, so that two side seat panels can be firstly respectively placed on the second beam 44, pushed to two sides and then placed in the middle seat panel, and the assembly of the armchair is realized.

In the aspect of the structure, mortise and tenon joint is adopted between each part in the part, the part does not stretch out the department in frame or the board, detains the limit and uses the dovetail joint with the brace to be connected, and the part goes out the head and uses straight tenon joint. Only dovetail tenons, straight tenons and hand-copying tenons are used in the whole design, although the parts are numerous, the processing difficulty is not high due to the uniform types of tenons and the high section of the parts.

In this embodiment, the side frames and the side seat panels are both formed by two side frames and two side seat panels, and are fastened and constrained with each other, the matching relationship and the assembly sequence of each component are as shown in a schematic partial installation diagram 9, the bottom frame 2 is received by the second stay bars 14 of the two side frames 1, the vertical slots 15 of the first upright posts 11 of the side frames 1 are fastened by the second upright posts 31 of the front frame 3 and the third upright posts 41 of the back frame 4, so that the side frames 1 are prevented from tipping outwards, and the fastening edges of the three seat panels are fastened by the first cross beams 32 of the front frame 3 and the second cross beams 44 of the back frame 4, so that the front frame and the back frame are prevented from tipping outwards.

In order to verify the feasibility and the structural strength of the design scheme, a one-to-two physical model is manufactured, the feasibility of the model is verified through animation demonstration, and the excellent detachability and stability of the structure are also shown.

The chair provided by the utility model adopts the concave-convex structure of the wood structure to form the detachable structure which is mutually buckled and mutually limited, the whole is firm and stable, and the detachable chair is a plane part after being detached, thereby realizing the flat packaging and reducing the transportation cost; when the device is damaged, the service life can be prolonged by replacing parts for maintenance. Meanwhile, the chair has certain interestingness due to the detachable structure, and the interactive experience of a user can be improved.

The above embodiments are only preferred embodiments of the present invention, the scope of protection of the present invention is not limited thereto, and any person skilled in the art can obviously obtain simple changes or equivalent replacements of the technical solutions within the technical scope of the present invention.

Claims (10)

1. An armchair, comprising:

two groups of side frames (1) which are oppositely arranged;

the bottom frame (2) is arranged between the two groups of side frames (1), and two sides of the bottom frame are respectively buckled with the inner sides of the two groups of side frames (1);

the front frame (3) is arranged at the front sides of the two groups of side frames (1), and two sides of the front frame are respectively buckled with the front sides of the two groups of side frames (1);

the back frame (4) is arranged on the back sides of the two groups of side frames (1), two sides of the lower end of the back frame are respectively buckled with the back sides of the two groups of side frames (1), and the height of the back frame (4) is greater than that of the two groups of side frames (1);

the seat surface (5) is arranged at the top of the front frame (3), and the front side and the rear side are respectively buckled with the front frame (3) and the back frame (4).

2. The armchair of claim 1, characterized in that said side frame (1) comprises two first uprights (11) arranged opposite each other and an armrest (12), a first brace (13) and a second brace (14) horizontally spaced from top to bottom between said two first uprights (11);

the handrails (12) are positioned on the inner sides of the top ends of the two first upright columns (11), and the second support rods (14) are positioned on the inner sides, close to the bottom ends, of the two first upright columns (11); the two ends of the handrail (12) are connected with the first upright post (11) through a lifting tenon, the two ends of the first support rod (13) and the second support rod (14) are connected with the first upright post (11) through a straight tenon, and the opposite surfaces of the outer sides of the two first upright posts (11) extend outwards to form a vertical clamping groove (15);

opposite sides of a first support rod (13) and a second support rod (14) of the two groups of side frames (1) extend outwards to form an upper clamping edge (16) and a lower clamping edge (17);

the two sides of the front frame (3) are respectively buckled with two vertical clamping grooves (15) in the outer side of the first upright post (11), the two sides of the bottom frame (2) are respectively buckled with lower clamping edges (17) of the second support rods (14), and the two sides of the seat surface (5) are respectively buckled with upper clamping edges (16) of the first support rods (13).

3. The armchair according to claim 2, wherein the bottom frame (2) comprises two bottom frame buckling edges (21) arranged oppositely and two bottom frame pull bars (22) arranged at two ends of the two bottom frame buckling edges (21), the bottom frame buckling edges (21) and the bottom frame pull bars (22) are connected through straight tenons, the bottom outer sides of the two bottom frame pull bars (22) are contracted inwards to form first horizontal clamping grooves (23) matched with the two lower clamping edges (17), and the lower clamping edges (17) of the two groups of side frames (1) are respectively inserted into the first horizontal clamping grooves (23) of the two bottom frame pull bars (22).

4. The armchair according to claim 2, characterized in that said front frame (3) comprises two second uprights (31) arranged opposite and a first cross member (32) and a third strut (33) arranged horizontally between said two second uprights (31);

the first cross beam (32) is positioned on the inner side of the top ends of the two second upright columns (31), and the third support rod (33) is positioned on the inner side of the two first upright columns (11) close to the bottom ends;

two ends of the first cross beam (32) and two ends of the third supporting rod (33) are connected with the two second vertical columns (31) through straight tenons;

one side of the top of the first cross beam (32) is provided with a second horizontal clamping groove (34), and the outer sides of the two second vertical columns (31) extend towards the side far away from the second horizontal clamping groove (34) to form first vertical clamping edges (35) matched with the vertical clamping grooves (15) on the outer sides of the first vertical columns (11).

5. The armchair of claim 4, characterized in that said back frame (4) comprises two oppositely arranged third uprights (41) and a fourth brace (42), a fifth brace (43), a second beam (44) and a sixth brace (45) horizontally spaced from top to bottom between said two third uprights (41);

the fourth support rod (42) is positioned on the inner side of the top ends of the two third upright columns (41), and the sixth support rod (45) is positioned on the inner side of the two third upright columns (41) close to the bottom ends; the fifth support rod (43) and the second cross beam (44) are positioned on the inner sides of the middles of the two third vertical columns (41), and a gap is formed between the fifth support rod and the second cross beam; the fourth support rod (42) is connected with the third upright post (41) through a tenon, and the fifth support rod (43), the sixth support rod (45) and the second cross beam (44) are connected with the third upright post (41) through straight tenons;

the distance from the second cross beam (44) to the bottom of the third upright (41) is equal to the distance from the first cross beam (32) to the bottom of the second upright (31);

a third horizontal clamping groove (46) is formed in one side of the top of the second cross beam (44), a notch (47) communicated with the third horizontal clamping groove (46) is formed in the middle of the second cross beam, and the outer sides of the two third upright columns (41) extend towards one side far away from the third horizontal clamping groove (46) to form a second vertical clamping edge (48) matched with the vertical clamping groove (15) in the rear side;

the rear side of the seat surface (5) is buckled with the third horizontal clamping groove (46).

6. The armchair according to claim 5, characterized in that a back board (49) is further arranged between the fourth support rod (42) and the fifth support rod (43), and both ends of the back board (49) are respectively connected with the fourth support rod (42) and the fifth support rod (43) through straight tenons.

7. The armchair of claim 6, characterized in that said backrest plate (49) is of curved configuration.

8. The armchair of claim 7, wherein said seating surface (5) comprises a middle seating panel and side seating panels provided at both sides of said middle seating panel and fastened with said middle seating panel.

9. The armchair of claim 8, wherein said mid-seat panel comprises a mid-seat panel core (51), mid-seat panel fastening edges (52) provided at both ends of said mid-seat panel core (51), and mid-seat panel pulling edges (53) provided at both sides of said mid-seat panel core (51);

the inner side of the drawing edge (53) of the middle seat panel is provided with a limiting groove matched with the core of the middle seat panel, and the intersection of the buckling edge (52) of the middle seat panel and the drawing edge (53) of the middle seat panel is connected by a dovetail joint;

two ends of the bottom of the middle seat panel buckling edge (52) extend downwards to form a first horizontal clamping edge (54) matched with the second horizontal clamping groove (34) and the third horizontal clamping groove (46).

10. The armchair of claim 9, wherein said side seat panels comprise a side seat panel core (55), side seat panel fastening edges (56) disposed at both ends of said side seat panel core (55), and side seat panel pulling edges (57) disposed at both sides of said side seat panel core (55);

the inner side of the edge pulling edge (57) of the edge seat panel is provided with a limiting groove matched with the edge seat panel core, and the intersection of the edge fastening edge (56) of the edge seat panel and the edge pulling edge (57) of the edge seat panel is connected by a dovetail joint;

two ends of the bottom of the side seat panel buckling edge (56) extend downwards to form a second horizontal clamping edge (58) matched with the second horizontal clamping groove (34) and the third horizontal clamping groove (46), and a fourth horizontal clamping groove (59) matched with the upper clamping edge (16) is formed in one side of the top of the side seat panel pulling edge (57).

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