CN204444790U - Foldable desk and foldable chair - Google Patents

Abstract

The utility model discloses a foldable desk, which comprises a desk box and table legs; the desk box includes a top surface, a bottom surface, a left side, a right side and a back side; The surfaces are connected by hinges, the lower left and bottom are connected by hinges; the right is composed of upper right and lower right connected by hinges; the upper right and top are connected by hinges, and the lower right and bottom are connected by hinges. Connected by a hinge; the back is formed by connecting the upper back and the lower back through a hinge; the upper back and the top surface are connected by a hinge, and the lower back and the bottom surface 2 are connected by a hinge. The table legs are rotatably connected with the bottom surface through rotating hinges, and the table legs are telescopic table legs. The utility model also discloses a foldable chair. The utility model has the advantages of simple and convenient operation, light and firm structure, low production cost and good economic benefits, and can be widely used in school classrooms, unit conference rooms, public lecture halls and the like.

Description

Foldable desks and foldable chairs

technical field

The utility model relates to a desk and chair, in particular to a foldable desk and a foldable chair.

technical field

The desks and chairs widely used in all kinds of large, middle and primary schools at present have the characteristics of simple structure, fixed position and poor mobility, which cannot meet the requirements of interactive teaching activities in classroom teaching; The height of the chair cannot be adjusted, and students with different statures will experience physical discomfort when using it for a long time, and even affect physical development, deepen bad habits such as myopia and hunchback, which is not conducive to the physical and mental health and development of young students.

Utility model content

The technical problem to be solved by the utility model is to provide a foldable desk for the deficiencies of the above-mentioned prior art. The adjustment of the height and the height of the chair legs can meet the free adjustment of the desks and chairs for students of different shapes, and can sit in the most comfortable posture.

For realizing above-mentioned technical purpose, the technical scheme that the utility model takes is: foldable desk, comprises desk box and table leg; Described desk box comprises top surface, bottom surface, left side, right side and back; It is characterized in that:

The left side is formed by connecting the upper left side and the lower left side through a hinge; the upper left side and the top surface are connected through a hinge, and the lower left side and the bottom surface are connected through a hinge; when the hinge is turned, the Fold the left side into or out of the table box;

The right side is formed by connecting the upper right side and the lower right side through a hinge; the upper right side and the top surface are connected through a hinge, and the lower right side and the bottom surface are connected through a hinge; when the hinge is turned, the The right side 4 is folded in or out of the table box;

The back is formed by connecting the upper back and the lower back through a hinge; the upper back and the top surface are connected through a hinge, and the lower back and the bottom surface 2 are connected through a hinge; when the hinge is turned, the Fold the back of the desk box into or out of the desk box;

The table legs are rotatably connected to the bottom surface through the rotating hinges; when the table legs are folded, the table legs rotate along the length direction of the table box around the rotating hinges until the table legs contact the bottom surface; when the table legs are fully unfolded , the angle θ between the table leg and the bottom surface is 90°-120°.

As a further improved technical solution of the utility model, the upper left side and the lower left side are connected by a hinge located on the outer surface of the table box; the upper left side and the top surface are connected by a hinge located on the inner surface of the table box, The lower left surface and the bottom surface are connected by a hinge located on the inner surface of the table box;

The upper right side and the lower right side are connected by a hinge located on the outer surface of the table box; the upper right side and the top surface are connected by a hinge located on the inner surface of the table box, and the lower right side and the bottom surface are connected by a hinge located on the inner surface Hinge connection on the inner surface of the table box;

The upper back and the lower back are connected by a hinge located on the outer surface of the table box; the upper back and the top surface are connected by a hinge located on the inner surface of the table box, and the lower back and the bottom surface are connected by a Hinge connection on the inner surface of the table box.

As a further improved technical solution of the utility model, it also includes a limit support piece that is rotatably connected to the upper back surface or the lower back surface; fully extended state.

As a further improved technical solution of the utility model, the limit support piece 7 is rotatably connected to the upper back surface 51; the limit support piece is rotated downward to make the limit support piece contact with the lower back surface, which can prevent the upper back surface and the lower back surface from folding .

As a further improved technical solution of the utility model, there are four table legs, and the table legs are telescopic table legs; the telescopic table legs are composed of upper table legs and lower table legs, and the upper table legs The lower end is provided with an opening, and the interior is a cavity communicated with the opening; the upper table leg is adapted to the lower table leg and the lower table leg can extend into the cavity from the opening; the upper table leg is arranged from top to bottom. There are at least two limit holes; when the lower table leg extends into the upper table leg, the lower end of the upper table leg can be blocked by the bolt matched with the limit hole, which can prevent the lower table leg from continuing to extend into the upper table leg, so as to adjust the table the length of the legs.

As a further improved technical solution of the utility model, the rotary hinge includes a hinge seat and a hinge rod; the hinge seat includes a base and a connection limit frame fixedly connected to the base; the connection limit frame and the hinge The page bar is rotationally connected; the connecting limit frame 84 is formed by sequentially connecting the left frame surface, the front frame surface and the right frame surface; an opening is formed between the left frame surface and the right frame surface.

In order to achieve the above technical purpose, another technical solution adopted by the utility model is: a foldable chair, including a chair back, a chair surface and chair legs; it is characterized in that: the chair back and the chair surface are connected by a hinge, The chair back and the chair surface can be rotated and fitted together through the rotating hinge; the chair legs are connected with the chair surface through the rotating hinge; when the chair legs are folded, the chair legs rotate toward the chair surface until the chair legs Contact with the chair surface; when the chair legs are fully unfolded, the angle θ between the chair legs and the chair surface is 90°-120°.

As a further improved technical solution of the present invention, it also includes a positioning piece that is rotatably connected with the back of the chair or the chair surface; the positioning piece is used to make the back of the chair or the chair 1 fully unfolded when the backrest 10 and the surface of the chair are fully unfolded. state.

As a further improved technical solution of the utility model, one end of the positioning sheet is rotatably mounted on the chair back, and the other end is provided with a positioning hole; the seat surface is also provided with a positioning hole; when the chair back and the seat surface are in a fully unfolded state When turning the positioning piece, the positioning hole on the positioning piece corresponds to the positioning hole on the seat surface, and the bolt passes through the positioning hole on the positioning piece and the positioning hole on the seat surface to prevent the chair back and the seat surface from folding, so that the seat back and the seat surface maintain a fully unfolded state.

As a further improved technical solution of the utility model, there are four chair legs, and the chair legs are telescopic chair legs; the telescopic chair legs are composed of an upper chair leg and a lower chair leg, and the upper chair leg The lower end is provided with an opening, and the interior is a cavity communicated with the opening; the upper leg is adapted to the lower leg and the lower leg can extend into the cavity from the opening; the upper leg is arranged from top to bottom. There are at least two limit holes; when the lower chair leg extends into the upper chair leg, the lower end of the upper chair leg is blocked by the bolt matched with the limit hole, which can prevent the lower chair leg from continuing to extend into the upper chair leg, so as to adjust the chair the length of the legs.

The utility model uses hinge parts to connect the inner surface and outer surface of each side of the table box, between the chair surface and the back of the chair, compresses by rotating the hinge, folds and compresses the three sides of the table box, and the whole table box A three-dimensional box is folded into a stacked template; by rotating the hinge, the back and seat surface can be rotated and fitted together, and folded into two wooden boards. The table legs and chair legs adopt a retractable mechanical structure, and the telescopic length has different adjustable distances. The adjustment process is simple and easy to operate; the table legs and the table box, the chair legs and the chair surface are connected by hinges, Page, the rotated table and chair legs are tightly attached to the bottom of the compressed box and the back of the chair, so as to complete the entire folding process. In the same way, the board-shaped desks and chairs can be restored to their normal shape by stretching, rotating and turning over.

The utility model uses simple mechanical parts to realize the folding of three-dimensional desks and chairs into wooden stacks, which changes the fixed position mode of traditional desks and chairs in the classroom, is convenient to move, greatly increases the activity area and area of the classroom, and is conducive to teachers' development of interaction Classroom teaching; the height of table legs and chair legs is adjustable, suitable for students of different body shapes; the folding, rotating and stretching operations of desks and chairs are simple and convenient, and the structure is light and firm; foldable desks and chairs adopt a simple and accessible structure, Parts and materials have low production cost and good economic benefits, and can be widely used in school classrooms, unit meeting rooms, public lecture halls, etc.

Description of drawings

Fig. 1 is a schematic diagram of a three-dimensional structure after fully unfolding in Embodiment 1 of the utility model.

Fig. 2 is a schematic diagram of a fully folded three-dimensional structure in Embodiment 1 of the present utility model.

Fig. 3 is a schematic diagram of a three-dimensional structure after fully unfolding in Embodiment 2 of the utility model.

Fig. 4 is a schematic diagram of a fully folded three-dimensional structure in Embodiment 2 of the present invention.

Fig. 5 is a structural schematic diagram of the hinge seat of the rotary hinge in the present invention.

Fig. 6 is a structural schematic diagram of the hinge rod of the rotary hinge in the present invention.

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described further.

Detailed ways

Example 1

Referring to Fig. 1, Fig. 2, Fig. 5 and Fig. 6, this collapsible desk comprises desk box and table leg; Described desk box comprises top surface 1, bottom surface 2, left side 3, right side 4 and back 5; Described left side 3 is formed by connecting the upper left side 31 and the lower left side 32 through a hinge; the upper left side 31 and the top surface 1 are connected through a hinge, and the lower left side 32 and the bottom surface 2 are connected through a hinge; when turning the hinge , the left side 3 is folded in or out of the table box; the right side 4 is formed by connecting the upper right side 41 and the lower right side 42 through a hinge; the upper right side 41 and the top side 1 are connected by a hinge, The lower right side 42 and the bottom surface 2 are connected by a hinge; when the hinge is turned, the right side 4 is folded in or out of the table box; the back side 5 is formed by the upper back side 51 and the lower back side 52 through the hinge Connection structure; the upper back surface 51 is connected to the top surface 1 through a hinge, and the lower back surface 52 is connected to the bottom surface 2 through a hinge; when the hinge is turned, the back surface 5 faces the inside of the table box or the table Fold outside the box; the table legs 6 are rotationally connected with the bottom surface 2 through the rotating hinges 8; when the table legs 6 are folded, the table legs 6 rotate along the length direction of the table box centered on the rotating hinges until the table legs 6 It is in contact with the bottom surface 2; when the table legs 6 are fully unfolded, the angle θ between the table legs 6 and the bottom surface 2 is 90°-120°.

As a preferred solution, the upper left side 31 and the lower left side 32 are connected by a hinge located on the outer surface of the desk box; the upper left side 31 and the top surface 1 are connected by a hinge located on the inner surface of the desk box, the The lower left side 32 and the bottom surface 2 are connected by a hinge located on the inner surface of the table box; the upper right side 41 and the lower right side 42 are connected by a hinge located on the outer surface of the table box; the upper right side 41 and the top surface 1 They are connected by a hinge located on the inner surface of the table box, and the lower right side 42 and the bottom surface 2 are connected by a hinge located on the inner surface of the table box; the upper back 51 and the lower back 52 are connected by a Hinge connection on the surface; the upper back surface 51 is connected to the top surface 1 through a hinge located on the inner surface of the table box, and the lower back surface 52 is connected to the bottom surface 2 through a hinge located on the inner surface of the table box.

It also includes a limit support piece 7 that is rotatably connected to the upper back surface 51 or the lower back surface 52; when the upper back surface 51 and the lower back surface 52 are fully expanded, the rotation limit support piece 7 can maintain the upper back surface 51 and the lower back surface 52 to fully expand state. The position-limiting support piece 7 is rotatably connected to the upper back surface 51; turning the position-limiting support piece 7 downward makes the position-limiting support piece 7 contact with the lower back surface 52, which can prevent the upper back surface and the lower back surface from being folded. There are four table legs 6, and the table legs 6 are telescopic table legs; the telescopic table legs are composed of upper table legs 61 and lower table legs 62, and the lower end of the upper table legs 61 is provided with an opening, The inside is a cavity communicated with the opening; the upper table leg 61 is adapted to the lower table leg 62 and the lower table leg 62 can extend into the cavity from the opening; the upper table leg 61 is provided with At least two limit holes; when the lower table leg 62 stretches into the upper table leg 61, the lower end of the upper table leg 61 can be blocked by the bolt matched with the limit hole, which can prevent the lower table leg 62 from continuing to extend into the upper table leg 61 , to adjust the length of table legs 6. The rotary hinge 8 includes a hinge base 81 and a hinge rod 82; the hinge base 81 includes a base 83 and a connection limit frame 84 fixedly connected to the base 83; the connection limit frame 84 and the hinge rod 82 is rotationally connected; the connecting limit frame 84 is composed of a left frame surface 85, a front frame surface 86 and a right frame surface 87; an opening 88 is formed between the left frame surface 85 and the right frame surface 86.

Example 2

Referring to Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the foldable chair includes a chair back 10, a chair surface 11 and chair legs 9; The page can make the chair back 10 and the chair surface 11 rotate and fit together; the chair legs 9 are connected with the chair surface 11 through the rotating hinge 8; when the chair legs 9 are folded, the chair legs 9 rotate toward the chair surface 11, Until the chair legs 9 are in contact with the chair surface 11; when the chair legs 9 are fully unfolded, the angle θ between the chair legs 9 and the chair surface 11 is 90°-120°. As a preferred solution, it also includes a positioning piece 12 that is rotatably connected with the seat back 10 or the chair surface 11; expanded state. One end of the positioning piece 12 is rotatably mounted on the chair back 10, and the other end is provided with a positioning hole; the seat surface 11 is also provided with a positioning hole; Make the positioning hole on the positioning piece 12 correspond to the positioning hole on the chair surface 11, pass the positioning hole on the positioning piece 12 and the positioning hole on the chair surface 11 by bolts, to prevent the chair back 10 and the chair surface 11 from folding, Keep the seat back 10 and the seat surface 11 in a fully unfolded state.

There are four chair legs 13, and the chair legs 13 are telescopic chair legs; the telescopic chair legs 13 are composed of upper chair legs 14 and lower chair legs 15, and the lower ends of the upper chair legs 14 are provided with openings , the interior is a cavity communicated with the opening; the upper leg 14 is adapted to the lower leg 15 and the lower leg 15 can extend into the cavity from the opening; the upper leg 14 is arranged from top to bottom There are at least two limiting holes; when the lower chair leg 15 extends into the upper chair leg 14, the lower end of the upper chair leg 14 is blocked by the bolt matched with the limiting hole, so that the lower chair leg 15 can be prevented from continuing to extend into the upper chair leg 14 Inside, to regulate the length of chair leg 9. The rotary hinge 8 in the present embodiment 2 is the same as that in the embodiment 1, and will not be described in detail.

Claims (10)

1. A foldable desk, comprising a desk box and table legs; said desk box comprises a top surface (1), a bottom surface 2, a left side (3), a right side (4) and a back side (5); it is characterized in that: The left side (3) is formed by connecting the upper left side (31) and the lower left side (32) through a hinge; the upper left side (31) and the top side (1) are connected through a hinge, and the lower left side (32) ) and the bottom surface (2) are connected by a hinge; when the hinge is turned, the left surface (3) is folded in or out of the table box; The right side (4) is formed by connecting the upper right side (41) and the lower right side (42) through a hinge; the upper right side (41) and the top side (1) are connected through a hinge, and the lower right side (42) ) and the bottom surface 2 are connected by a hinge; when the hinge is turned, the right side 4 is folded in or out of the table box; The rear face (5) is composed of an upper rear face (51) and a lower rear face (52) connected by a hinge; the upper rear face (51) and the top surface (1) are connected by a hinge, and the lower rear face (52) ) and the bottom surface (2) are connected by a hinge; when the hinge is turned, the rear surface (5) is folded in or out of the table box; The table leg (6) is rotationally connected with the bottom surface (2) through the rotating hinge (8); when the table leg 6 is folded, the table leg (6) rotates along the length direction of the table box around the rotating hinge until the The table legs (6) are in contact with the bottom surface (2); when the table legs (6) are fully unfolded, the angle θ between the table legs (6) and the bottom surface (2) is 90°-120°. 2. The foldable desk according to claim 1, characterized in that: the upper left side (31) and the lower left side (32) are connected by a hinge located on the outer surface of the desk box; the upper left side (31) ) and the top surface (1) are connected by a hinge located on the inner surface of the table box, and the lower left side (32) and the bottom surface (2) are connected by a hinge located on the inner surface of the table box; The upper right side (41) and the lower right side (42) are connected by a hinge located on the outer surface of the table box; the upper right side (41) and the top surface (1) are connected by a hinge located on the inner surface of the table box connection, the lower right side (42) and the bottom surface (2) are connected through a hinge located on the inner surface of the table box; The upper back (51) and the lower back (52) are connected by a hinge located on the outer surface of the table box; the upper back (51) and the top surface (1) are connected by a hinge located on the inner surface of the table box Connection, the connection between the lower rear surface (52) and the bottom surface (2) is through a hinge located on the inner surface of the table box. 3. The foldable desk according to claim 2, characterized in that: it also includes a limit support piece (7) that is rotatably connected to the upper back face 51 or the lower back face 52; when the upper back face (51) and the lower back face ( 52) When fully unfolded, turning the limit support piece (7) can keep the upper back surface (51) and the lower back surface (52) in a fully unfolded state. 4. The foldable desk according to claim 3, characterized in that: the limit support piece (7) is rotatably connected to the upper back surface (51); turning the limit support piece (7) downward makes the limit The support sheet (7) is in contact with the lower back face (52), and can prevent the upper back face and the lower back face from being folded. 5. The foldable desk according to claim 1 or 2 or 3 or 4, characterized in that: there are 4 said table legs (6), and said table legs (6) are telescopic table legs; The telescopic table leg is composed of an upper table leg (61) and a lower table leg (62), the lower end of the upper table leg (61) is provided with an opening, and the interior is a cavity communicating with the opening; the upper table leg (61) ) is adapted to the lower table leg (62) and the lower table leg (62) can extend into the cavity from the opening; the upper table leg (61) is provided with at least two limiting holes from top to bottom; When the table leg (62) stretches into the upper table leg (61), the lower end of the upper table leg (61) is blocked by the bolt matched with the limit hole, which can prevent the lower table leg (62) from continuing to extend into the upper table leg (61 ) to adjust the length of the table legs (6). 6. The foldable desk according to claim 5, characterized in that: the rotary hinge (8) includes a hinge seat (81) and a hinge rod (82); the hinge seat (81) includes a base (83) and the connection limit frame (84) fixedly connected on the base (83); the connection limit frame (84) is rotationally connected with the hinge rod (82); the connection limit frame (84) is composed of The left frame surface (85), the front frame surface (86) and the right frame surface (87) are sequentially connected to form; the opening (88) is formed between the left frame surface (85) and the right frame surface (86). 7. A foldable chair, comprising a chair back (10), a chair surface (11) and chair legs (9); it is characterized in that: the chair back (10) and the chair surface (11) are connected by a hinge , the chair back (10) and the chair surface (11) can be rotated and fitted together by rotating the hinge; the chair legs (9) are connected to the chair surface (11) by rotating the hinges (8); the chair legs (9 ) is folded, the chair legs (9) rotate toward the chair surface (11) until the chair legs (9) are in contact with the chair surface (11); when the chair legs (9) are fully unfolded, the chair legs The angle θ between (9) and the chair surface (11) is 90°-120°. 8. The foldable chair according to claim 7, characterized in that: it also includes a positioning piece (12) that is rotatably connected to the chair back 10 or the chair surface 11; the positioning piece (12) is used as a chair back (10) ) and the chair surface (11) are fully deployed, making the chair back (10) or the chair surface (11) be the fully expanded state. 9. The foldable chair according to claim 8, characterized in that: one end of the positioning piece (12) is rotatably mounted on the chair back (10), and the other end is provided with a positioning hole; the seat surface (11) is Positioning holes are also provided; when the back of the chair (10) and the chair surface (11) are fully unfolded, the positioning piece is rotated to make the positioning hole on the positioning piece (12) correspond to the positioning hole on the chair surface (11), Through the positioning hole on the positioning piece (12) and the positioning hole on the seat surface (11) through the bolt, to prevent the chair back (10) and the chair surface (11) from folding, the chair back (10) and the seat surface (11) ) remain fully extended. 10. The foldable chair according to claim 7 or 8 or 9, characterized in that: there are four chair legs 9, and the chair legs (9) are telescopic chair legs; (9) It consists of an upper chair leg (91) and a lower chair leg (92). The lower end of the upper chair leg (91) is provided with an opening, and the interior is a cavity communicating with the opening; the upper chair leg (91) and The lower chair leg (92) is suitable and the lower chair leg (92) can stretch into the cavity from the opening; the upper chair leg (91) is provided with at least two limiting holes from top to bottom; the lower chair leg ( 92) When stretching into the upper chair leg 91), the lower end of the upper chair leg (91) is blocked by the bolt matched with the limit hole, which can prevent the lower chair leg (92) from continuing to extend into the upper chair leg (91), so as to Adjust the length of the chair legs (9).