Desk and chair convenient to assemble

Abstract

The utility model belongs to the technical field of desks and chairs, and particularly discloses a desk and chair convenient to assemble, a seat stand, a backrest and supporting legs are provided with linkage assemblies, and each linkage assembly comprises an upper connecting piece, a connecting rod and a main pull rod; a plurality of upper connecting pieces are arranged at the top of the seat stand, a plurality of connecting rods are arranged at the bottom of the backrest, and the upper connecting pieces are rotationally connected with the connecting rods; a plurality of lower connecting pieces are arranged at the bottom of the seat stand, the tops of the supporting legs are rotationally connected with the lower connecting pieces, the two ends of the main pull rod are attached to the outer sides of the two supporting legs respectively, the two ends of the main pull rod are provided with two integrally-fixed insertion rods B, and the insertion rods B are embedded into the supporting legs; the seat is folded into a plate, storage and carrying are more convenient, the seat is folded to be placed on the top of a desk when large sweeping is conducted in a classroom, the seat is in a plate shape during transportation, more space is saved, transportation cost is reduced, and pre-installation can be completed when the seat leaves a factory.

Description

Technical Field

[0001] The utility model relates to the technical field of desks and chairs, in particular to a desk and chair which is easy to assemble. Background Art

[0002] Desks and chairs, also known as desks and chairs for students in class, are a type of desk and chair. They are also called student desks and chairs, school desks and chairs. Desks and chairs can be divided according to age, material, and function.

[0003] After the desks and chairs are produced, the various parts are packed separately and assembled after being transported to the destination. The desks and chairs are assembled and fixed with bolts. The assembly of the bolts requires the help of tools and the installation speed is slow. Utility Model Content

[0004] The purpose of the utility model is to provide a desk and chair that is easy to assemble to solve the above problems.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a desk and chair that is easy to assemble, comprising;

[0006] A seat, a backrest, and legs, wherein the backrest is located at the top of the seat, and there are multiple legs, which are located at the bottom of the seat;

[0007] The seat platform, backrest and legs are provided with linkage components, which include an upper connecting piece, a connecting rod and a main pull rod;

[0008] The top of the seat platform is provided with a plurality of upper connecting pieces, the bottom of the backrest is provided with a plurality of connecting rods, and the upper connecting pieces are rotatably connected with the connecting rods;

[0009] The bottom of the base has a plurality of lower connecting parts, the top of the legs are rotatably connected to the lower connecting parts, the two ends of the main pull rod are respectively attached to the outside of the two legs, and the two ends of the main pull rod are provided with two integrally fixed plug rods B, and the plug rods B are embedded in the inside of the legs.

[0010] Preferably, the two ends of the main pull rod are provided with a plurality of symmetrical auxiliary pull rods, and the two ends of the auxiliary pull rod are respectively provided with an insertion rod A and a connecting shaft, the connecting shaft is embedded in the interior of the main pull rod and is rotatably connected thereto, and the insertion rod A is embedded in the interior of the supporting leg.

[0011] Preferably, the insertion rod B is rectangular and the insertion rod A is cylindrical.

[0012] Preferably, grooves are provided at both ends of the main pull rod, the auxiliary pull rod is embedded in the groove, the outer side of the auxiliary pull rod is flush with the outer side of the main pull rod, and the two ends of the main pull rod are arc-shaped.

[0013] Preferably, the main pull rod has an integrally fixed fixing plate near the middle position, a through hole is opened on the fixing plate, a cross bar is provided between the two main pull rods, and both ends of the cross bar have integrally fixed fixing rods, which are embedded in the through holes on the fixing plate.

[0014] Preferably, a limiting groove is provided on the connecting rod, and the top of the upper connecting member is provided with an integrally fixed limiting rod, and both ends of the limiting rod are embedded in the limiting groove and clamped therewith.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. Rotate the legs to be perpendicular to the seat platform, and then fit the two ends of the main pull rod to the two legs respectively, insert the plug rod B into the inside of the legs, and the end of the plug rod A is simultaneously inserted into the inside of the legs, so as to limit the two legs, so that the two legs remain parallel and fixed. At this time, insert the fixing rods at both ends of the cross bar into the through holes on the two fixing plates, so as to tighten the two main pull rods and make them taut, so that the seat is more stable when unfolded, and then pull the backrest to rotate it through the connecting rod and the upper connecting piece, so that the backrest and the seat platform remain perpendicular. At this time, students can sit on the seat platform and lean on the backrest. When the backrest is pushed backward by force, the limit rod is embedded in the limit groove to limit the backrest, so that the backrest is limited and fixed;

[0017] 2. When disassembling, push the backrest in the opposite direction to make it fit on the top of the seat platform to fold it, then pull the cross bar upward to separate it from the main pull rod. The legs and the main pull rod are made of rigid materials and have a certain toughness. Then push the main pull rod and the legs in two opposite directions to separate the plug A and the plug B from the legs. At this time, you can remove the main pull rod, place the main pull rod and the cross bar in the table hole of the desk, turn the legs to fold them at the bottom of the seat platform, so that the seat is folded into a board, which is more convenient for storage and carrying. When cleaning the classroom, fold it and place it on the top of the desk. The seat is in the shape of a board during transportation, which saves more space and reduces transportation costs. It can be pre-installed when leaving the factory. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the back side of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the utility model facing upward;

[0021] Figure 4 For this utility model Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0022] Figure 5 For this utility model Figure 2Schematic diagram of the enlarged structure of part B in the middle.

[0023] In the figure: 100, seat platform; 101, upper connecting piece; 102, limit rod; 103, lower connecting piece; 200, backrest; 201, connecting rod; 202, limit groove; 300, support leg; 400, main pull rod; 401, auxiliary pull rod; 402, insertion rod A; 403, insertion rod B; 404, connecting shaft; 405, fixing plate; 500, cross bar. DETAILED DESCRIPTION

[0024] 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.

[0025] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing 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 therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See also Figure 1-5 , the utility model provides a technical solution: a desk and chair that is easy to assemble, including;

[0028] A seat 100, a backrest 200, and legs 300, wherein the backrest 200 is located at the top of the seat 100, and the number of the legs 300 is multiple, and the legs 300 are located at the bottom of the seat 100;

[0029] The seat platform 100, the backrest 200, and the legs 300 are provided with linkage components, which include an upper connecting member 101, a connecting rod 201, and a main pull rod 400;

[0030] The top of the seat 100 has a plurality of upper connecting members 101, and the bottom of the backrest 200 has a plurality of connecting rods 201, and the upper connecting members 101 are rotatably connected to the connecting rods 201;

[0031] The bottom of the base 100 has multiple lower connecting parts 103, the top of the supporting leg 300 is rotatably connected to the lower connecting parts 103, the two ends of the main pull rod 400 are respectively attached to the outside of the two supporting legs 300, and the two ends of the main pull rod 400 have two integrally fixed plug rods B403, and the plug rod B403 is embedded in the interior of the supporting leg 300.

[0032] Furthermore, the two ends of the main pull rod 400 are provided with a plurality of symmetrical auxiliary pull rods 401, and the two ends of the auxiliary pull rod 401 are respectively provided with an insertion rod A402 and a connecting shaft 404, the connecting shaft 404 is embedded in the interior of the main pull rod 400 and is rotatably connected thereto, and the insertion rod A402 is embedded in the interior of the support leg 300.

[0033] Furthermore, the insertion rod B403 is rectangular and the insertion rod A402 is cylindrical.

[0034] Furthermore, grooves are provided at both ends of the main pull rod 400, the auxiliary pull rod 401 is embedded in the grooves, the outer side of the auxiliary pull rod 401 is flush with the outer side of the main pull rod 400, and both ends of the main pull rod 400 are arc-shaped.

[0035] Furthermore, the main pull rod 400 has an integrally fixed fixing plate 405 near the middle position, and a through hole is opened on the fixing plate 405. A cross bar 500 is provided between the two main pull rods 400, and both ends of the cross bar 500 have integrally fixed fixing rods, which are embedded in the through holes on the fixing plate 405.

[0036] Furthermore, a limiting groove 202 is provided on the connecting rod 201 , and the top of the upper connecting member 101 has an integrally fixed limiting rod 102 , and both ends of the limiting rod 102 are embedded in the limiting groove 202 and clamped therewith.

[0037] Working principle: when in use, the legs 300 are rotated to be perpendicular to the seat platform 100, and then the two ends of the main pull rod 400 are respectively fitted with the two legs 300, the insertion rod B403 is embedded in the inside of the legs 300, and the end of the insertion rod A402 is simultaneously embedded in the inside of the legs 300, so as to limit the two legs 300, so that the two legs 300 remain parallel and the legs 300 are fixed. At this time, the fixing rods at both ends of the cross bar 500 are embedded in the through holes on the two fixing plates 405, so as to tighten the two main pull rods 400 to make them taut, so that the seat is more stable when unfolded, and then the backrest 200 is pulled to rotate with the upper connecting piece 101 through the connecting rod 201, so that the backrest 200 and the seat platform 100 remain perpendicular. At this time, the student can sit on the seat platform 100 and lean on the backrest 200. When the backrest 200 is pushed backward by force, the limiting rod 102 is embedded in the limiting groove 202 for limiting, so that the backrest 200 is limited and fixed;

[0038] Furthermore, when disassembling, push the backrest 200 in the opposite direction so that it fits on the top of the seat platform 100 and is folded. Then pull the cross bar 500 upward to separate it from the main pull rod 400. The legs 300 and the main pull rod 400 are made of rigid materials and have a certain toughness. Then push the main pull rod 400 and the legs 300 in two opposite directions to separate the insertion rod A402 and the insertion rod B403 from the legs 300. At this time, the main pull rod 400 can be removed, and the main pull rod 400 and the cross bar 500 are placed in the table hole of the desk. Turn the legs 300 to fold them at the bottom of the seat platform 100, so that the seat is folded into a board, which is more convenient for storage and carrying. When cleaning the classroom, fold it and place it on the top of the desk. The seat is in the shape of a board during transportation, which saves more space and reduces transportation costs.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A desk and chair that is easy to assemble, characterized in that: include; A seat (100), a backrest (200), and legs (300), wherein the backrest (200) is located at the top of the seat (100), the number of legs (300) is multiple, and the legs (300) are located at the bottom of the seat (100); The seat platform (100), the backrest (200) and the legs (300) are provided with a linkage assembly, wherein the linkage assembly comprises an upper connecting member (101), a connecting rod (201) and a main pull rod (400); The top of the seat platform (100) is provided with a plurality of upper connecting members (101), and the bottom of the backrest (200) is provided with a plurality of connecting rods (201), and the upper connecting members (101) are rotatably connected to the connecting rods (201); The base (100) has a plurality of lower connecting members (103) at the bottom, the top of the supporting leg (300) is rotatably connected to the lower connecting member (103), the two ends of the main pull rod (400) are respectively attached to the outside of the two supporting legs (300), and the two ends of the main pull rod (400) have two integrally fixed plug rods B (403), and the plug rods B (403) are embedded in the interior of the supporting leg (300).

2. The easy-to-assemble desk and chair according to claim 1, characterized in that: The two ends of the main pull rod (400) are provided with a plurality of symmetrical auxiliary pull rods (401), and the two ends of the auxiliary pull rod (401) are respectively provided with an insertion rod A (402) and a connecting shaft (404), the connecting shaft (404) is embedded in the interior of the main pull rod (400) and is rotatably connected thereto, and the insertion rod A (402) is embedded in the interior of the supporting leg (300).

3. The easy-to-assemble desk and chair according to claim 1, characterized in that: The insertion rod B (403) is rectangular in shape, and the insertion rod A (402) is cylindrical in shape.

4. The easy-to-assemble desk and chair according to claim 1, characterized in that: The two ends of the main pull rod (400) are provided with grooves, the auxiliary pull rod (401) is embedded in the grooves, the outer side of the auxiliary pull rod (401) is flush with the outer side of the main pull rod (400), and the two ends of the main pull rod (400) are arc-shaped.

5. The easy-to-assemble desk and chair according to claim 1, characterized in that: The main pull rod (400) has an integrally fixed fixing plate (405) near the middle position, and a through hole is provided on the fixing plate (405). A cross bar (500) is provided between the two main pull rods (400), and both ends of the cross bar (500) have integrally fixed fixing rods, and the fixing rods are embedded in the through holes on the fixing plate (405).

6. The easy-to-assemble desk and chair according to claim 1, characterized in that: The connecting rod (201) is provided with a limiting groove (202), the top of the upper connecting member (101) is provided with an integrally fixed limiting rod (102), and both ends of the limiting rod (102) are embedded in the limiting groove (202) and are clamped therewith.

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