CN112107132A

CN112107132A - Method for realizing afternoon nap function on desk and chair and dual-purpose desk and chair

Info

Publication number: CN112107132A
Application number: CN201910536887.9A
Authority: CN
Inventors: 胡星昭; 贺嘉文; 唐志; 廖韵晗; 胡越; 陈子墨; 胡光南
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2020-12-22

Abstract

The utility model provides a dual-purpose desk chair for classroom is on class and afternoon nap, includes desk and chair, and the desk includes table cabinet, stand and table base, and the chair includes chair base, seat and back, characterized by: the desk cabinet of the desk is hinged with the upright post and can rotate to a horizontal position or an inclined position around the hinge, the seat plate of the tablet chair is fixed or hinged on the chair base, and the backrest is hinged with the chair base; when the desk and chair are used for lying, the desk and chair are deformed to form a reclining chair, the desktop of the desk and cabinet is positioned at an inclined position, the backrest of the chair is positioned at an outward inclined position, and the desk and the chair are connected into an inclined long backrest close to a plane for supporting the waist and the back of a lying person. The desk can also be independently transformed into a reclining chair. The invention realizes the function of lying without increasing the floor area of the desk and chair, provides a comfortable and healthy afternoon nap facility for primary and secondary school students, solves the problem of difficult afternoon nap of the students puzzling the school for a long time, and ends the history of afternoon nap of the students lying on the desk since ancient times.

Description

Method for realizing afternoon nap function on desk and chair and dual-purpose desk and chair

Technical Field

The invention relates to a teaching apparatus, in particular to a student desk and chair for a classroom.

Background

Afternoon nap is essential for teenagers. However, due to the existing conditions, most middle and primary schools cannot provide a nap facility for students, students who are not far away from home can only go home for nap at noon break, and the time for getting on and off the road is delayed for a lot. More difficult, students far away from the family can sleep only lying down on a desk, and can have a rest a bit, but if the students are in the long run, the students are slightly sore in the waist and back, and if the students are heavy, are bent in the back, the cervical vertebra is deformed, and the health of children is seriously affected. To change this state, many alternatives have appeared, such as: the desks of two persons are combined together by a method of changing or shaking numbers for one person to lie; temporarily paving the blank in a library, a body blind center, a conference room, a corridor and the like; there is even a midday break … … that simulates a clerk sitting on the ground closed on his eyes and spending more than an hour. The specific technical solution known so far is only the invention patent application with publication number CN109363367A, which, although realizing adjustable and foldable desk and chair with noon break function superior to all the prior art, still has the following disadvantages: the student can only change the chair into the deck chair alone when the siesta, the structure is more complicated, and the desk becomes the barrier completely, must lift up, and the person who lies still need bore under the desk, and the inconvenient insecurity of action does not reach the purpose of rest. In addition, the structure of the desk and chair is complex, the adjustment is troublesome, the desk and chair is inconvenient for children to use, the manufacturing cost is high, and the desk and chair is difficult to be accepted by teachers, students and parents and is difficult to popularize and apply. The desk and chair with the noon break function, which is safer, more comfortable, more convenient and more economical, has wide popularization and application values, is still an urgent need of the whole society.

Disclosure of Invention

The invention aims to provide a comfortable and healthy afternoon nap facility for primary and secondary school students in a classroom on the premise of not increasing the floor area of desks and chairs, and solves the problem that the students who bother schools and parents for a long time do not have afternoon nap conditions.

In order to achieve the purpose, the invention provides a method for realizing a afternoon nap function on a desk, and designs a dual-purpose desk and chair, which comprises the desk and a chair, wherein the desk comprises a desk cabinet, an upright post and a desk base, and is characterized in that: the desk cabinet is connected with the upright post by a hinge, the tablet chair comprises a chair base, a seat plate and a backrest, and the backrest is connected with the chair base or the seat plate by a hinge; when the desk is used for lying, the desk cabinet rotates around the hinge, so that the desktop of the desk cabinet rotates to be in an inclined position to support the waist and the back of a lying person.

The dual-purpose desk and chair designed according to the method comprises a desk 10 and a chair 20, wherein the desk 10 comprises a desk cabinet 11, an upright post 12 and a desk base 13, the desk cabinet 11 and the upright post 12 are connected with each other through a hinge, the desk cabinet comprises a cabinet bucket and a desktop which are hinged with each other, the upright post 12 is fixedly connected with the desk base, the chair 20 comprises a chair base 21, a seat plate 22 and a backrest 23, and the seat plate 22 is fixed or hinged on the chair base, and the dual-purpose desk and chair is characterized in that: the table cabinet 11 of the desk 10 further comprises a positioning mechanism 111, and the positioning mechanism is used for keeping the tabletop of the table cabinet 11 in a horizontal position or an inclined position when in use; the backrest 23 of the tablet chair 20 is hinged with the chair base 21 or the seat plate 22, and the position of the backrest 23 rotating around the hinge is determined by a positioning device 24 and is positioned at a position close to the vertical position or an outward inclined position; when the desk 10 is used for lying, the desk cabinet 11 rotates around the hinge, the desktop of the desk cabinet 11 is rotated to be in an inclined position and used for supporting the waist and back of a lying person, the smaller the inclination angle of the desktop to the horizontal plane is, the more comfortable the lying is, but the larger the occupied area is, the inclination angle is preferably close to 45 degrees in order to ensure that the distance between the desks is not increased, when the tablet chair 20 is used for lying, the backrest 23 rotates around the hinge to be in an outward inclined position, and the backrest is connected with the desktop of the desk cabinet 11 in the inclined position to form an inclined long backrest close to the plane and used for supporting the waist and back of the lying person. The desk cabinet 11 mainly supports the back part, and the backrest 23 mainly supports the waist part, so that the desk and the tablet chair are combined to form a spacious and safe deck chair after being deformed.

The upright post 12 comprises a left upright post 121 and a right upright post 122 which are both of telescopic sleeves or telescopic sleeve groove structures so as to adjust the height of the table top when in use;

the positioning mechanism 111 comprises a support block 1111 fixed on the upright post, a support rod 1112 hinged on the table cabinet 11 and a handle 1113 fixed on the support rod, when the support rod 1112 is pressed against the support block 1111, the table cabinet 11 is in a horizontal position, when the support rod 1112 rotates away from the support block 1111, the bottom of the table cabinet 11 is supported on the support block 1111, the table cabinet 11 is in an inclined position, and the handle 1113 is used for controlling the rotation of the support rod 1112.

The upright post 12 can also be designed into a double upright post 12a, which comprises a left double post 121a and a right double post 122a, which are both in telescopic sleeves or telescopic sleeve groove structures, so that the height of the table top can be adjusted when the table is used;

another structure form of the positioning mechanism 111 suitable for the double-column 12a is a latch type positioning mechanism 111a, which includes a positioning pin 111a1 installed on the table cabinet 11 or the double-column 12a and a positioning pin hole 111a2 correspondingly arranged on the double-column or the table cabinet, the top of the double-column 12a has a platform 12a1 and an inclined chamfer 12a2, the table cabinet 11 is internally provided with a cross beam 112, when the cross beam 112 is supported on the platform 12a1, the table top is in a horizontal position, and when the cross beam 112 is supported on the inclined chamfer 12a2, the table top is in an inclined position.

For more comfortable lying, the desk 10 further comprises a pillow 14 and a reclining mat 15, the pillow 14 comprises a bracket 141 and a pillow mat 142, the bracket is inserted into the wall of the desk cabinet 11 or is arranged at the back of the desk cabinet 11 by a separation hinge when in use, and the pillow is detached and stored when not in use;

the reclining chair cushion 15 is used as a bedding for lying, and comprises a flexible chair cushion 151, hooks 152 fixed at the upper and lower ends of the flexible chair cushion, and hanging rings 153 fixed at the edges of the table cabinet 11 and the chair base 21, wherein the flexible chair cushion is made of canvas or mesh fabric.

The simplest structure of the tablet chair 20 is a simple chair 20a, the chair base 21 is an I-shaped chair base 21a, the seat 22 is a fixed seat 22a, the backrest 23 is a simple backrest 23a, the I-shaped chair base 21a is a horizontal four-bar framework, the side view of the I-shaped chair base is I-shaped, the I-shaped chair base comprises a T-shaped upper seat 21a1 and an inverted T-shaped lower seat 21a2, the T-shaped upper seat 21a1 and the inverted T-shaped lower seat 21a2 are inserted into each other, height adjusting holes are formed in the T-shaped upper seat and the inverted T-shaped; the fixed seat plate 22a is a flat plate and is fixed on the T-shaped upper seat 21a 1; the simple backrest 23a is connected with the end part of the T-shaped upper seat by a hinge 25 and is positioned at a position close to the vertical position or an outward inclined position by a positioning device 24; the positioning device 24 is a jaw clutch 24a, which comprises a fixed jaw disc 24a1 fixed at the lower end of the simple backrest 23a, a movable jaw disc 24a2 fixed on a hinge shaft 251 of the hinge 25 and a spring 24a3, wherein the hinge shaft 251 is connected with the end of a T-shaped upper seat 21a1 by a sliding key 24a2 and is movably matched with a hinge hole on the simple backrest 23a, and the spring 24a3 is used for keeping the meshing state of the fixed jaw disc and the movable jaw disc.

The positioning device 24 for positioning the backrest at a position close to the vertical position or an outward inclined position can be further designed into a bayonet positioning component 24d, the bayonet positioning component 24d comprises a push rod 24d1, a snap key 24d2, a pressure spring 24d3 and a snap key groove plate 24d4, the push rod is inserted into the backrest 23, the snap key groove plate is fixed on the chair base 21 and is provided with two high and low snap key notches, the snap key 24d2 is clamped into the high notch to position the backrest 23 at the outward inclined position, and the snap key 24d2 is clamped into the low notch to position the backrest 23 at the position close to the vertical position;

the positioning device 24 for positioning the backrest in a position close to the vertical position or in a position inclined outward may be further designed as a latch positioning assembly 24e, the latch positioning assembly 24e includes a backrest elbow 24e1 fixed to the lower end of the backrest 23 and a positioning latch 24e2, the chair base 21 hinged to the backrest is provided with a latch hole 211 matched with the positioning latch, the seat 22 is a simply supported seat 22d, one end of which is hinged to the backrest elbow 24e1, and the other end of which is hinged to the chair base 21, when the latch 24e2 is inserted into the latch hole 211, the backrest 23 is in a position close to the vertical position, when the latch is pulled out from the latch hole 211, the backrest 23 is inclined outward, and the simply supported seat 22d hinged thereto is moved downward.

An optimized structural form of the tablet chair 20 is a compound chair 20b, the chair base 21 is an inclined top chair base 21b, the seat plate 22 is a dual-purpose seat plate 22b, the backrest 23 is a dual-purpose backrest 23b, the side view of the inclined top chair base 21b is in an I shape with a transverse inclination, and the inclined top chair base comprises an inclined T-shaped upper seat 21b1 and an inverted T-shaped lower seat 21a2 which are inserted into each other, provided with height adjusting holes and fastened by screws 21a 3; the dual-purpose seat plate 22b is a flat plate and is hinged at the high end of the inclined T-shaped upper seat 21b1, and the hinged end is provided with a limit tail 22b 1; the dual-purpose backrest 23b is hinged at the lower end of the inclined T-shaped upper seat 21b1, when the compound chair 20b is used as a seat, the dual-purpose seat plate 22b is positioned at a position close to the vertical position and used as the backrest, the limit tail 22b1 is attached to the inclined T-shaped upper seat 21b1 to prevent the dual-purpose seat plate from tilting backwards, the dual-purpose backrest 23b covers the inclined T-shaped upper seat 21b1, and the free end of the dual-purpose backrest props against the dual-purpose seat plate 22b to prevent the dual-purpose seat plate from tilting forwards; when the compound chair 20b is used as a reclining chair, the dual-purpose seat 22b is overlaid on the inclined T-shaped upper seat 21b1 in a nearly horizontal and slightly downward inclined position, the dual-purpose backrest 23b is hinged to an outward inclined position, and the table cabinet 11 is adjusted to be in the inclined position and butted with the outward inclined dual-purpose backrest 23b to form a nearly plane inclined long backrest for supporting the waist and back of a sleeper. Since the seat plate 22b is in a slightly inclined state, the person does not tend to slide down while lying.

The tablet chair 20 can also be transformed into a swivel chair 20c, the chair base 21 is a rotary base 21c, the seat 22 is a hinged seat 22c, the backrest 23 is a swivel chair backrest 23c, the positioning device 24 for positioning the backrest at a position close to the vertical position or at a position inclined outwards is a positioning connecting rod 24c, the lower end of the swivel chair backrest 23c is hinged, the rotary base 21c comprises a cross-shaped or disc-shaped base 21c1 and a rotary lifting column 21c2 standing at the center, the hinged seat 22c is hinged with the rotary lifting column 21c2 by a horizontal shaft hinge, the swivel chair backrest 23c is hinged with the hinged seat 22c, the free end of the positioning connecting rod is provided with a near positioning opening 24c1 and a far positioning opening 24c2, the side of the rotary lifting column 21c2 is provided with a fixed positioning column 21c21, when the positioning column is clamped in the near positioning opening, the swivel chair backrest 23c is positioned at the position, and the hinged seat is at a position inclined outwards slightly inclined, is used for making a deck chair in noon break. When the positioning column is clamped into the far positioning opening 242, the swivel chair back 23c is positioned at a position close to the vertical position, and the hinged seat plate is positioned at the horizontal position, so that a user can take a chair in class.

For the classrooms with no more than half of students who have nap in the same classroom, the dual-purpose desk and chair can be further simplified, the chair can completely adopt the existing structure without any change, the desk 10 is only required to be designed into the dual-purpose desk 10a which can be used for realizing the lying function independently, the desk cabinet is a dual-purpose desk cabinet 11a, the upright posts are high and low upright posts 12a and comprise a front high upright post 12a1, a rear high upright post 12a2 and a low upright post 12a3, the desk base is a dual-purpose base 13a fixedly connected with each upright post, the dual-purpose desk cabinet comprises a cabinet hopper and a desktop, the desk hopper is mutually hinged with the front high upright post 12a1 and the rear high upright post 12a2, and the desktop of the desk cabinet is positioned at the horizontal position or the inclined position by the positioning; the positioning mechanism 111 is a supporting positioning mechanism 111a, and comprises a supporting plate 111a1 hinged with the free end of the dual-purpose desk cabinet and supporting legs 111a2 hinged with the supporting plate, when the dual-purpose desk is used for class, the supporting legs are inserted into the holes of the low upright posts 12a3, and the desktop of the dual-purpose desk cabinet is positioned at a horizontal position; when the dual-purpose desk is used for lying, the free end of the dual-purpose desk cabinet is supported at the top end of the lower upright post 12a3, the desktop of the dual-purpose desk cabinet is positioned at an inclined position, the supporting plate 111a1 rotates for more than 90 degrees around the hinge and is connected with the desktop of the dual-purpose desk cabinet to form a supporting surface of the reclining chair, and the supporting legs are drooping and supported on the ground to support the weight of the lower half of the lying person.

The desk can be independently used as a deck chair without the assistance of a chair, but because the desk occupies a channel on the side surface of the desk when lying down, the desk on one side of the channel between two rows of desks can be used as the deck chair, namely, the lying students can not exceed half, and the desk is actually used for most middle and primary schools.

Advantageous effects of the invention

The dual-purpose desk and chair provided by the invention realizes the function of the desk and chair for sleeping at noon nap on the premise of not increasing the floor area of the desk and chair and not increasing additional facilities, has simple structure, low manufacturing cost, convenient use, comfort, spaciousness, safety and reliability, can be operated by children, can complete state transformation within half a minute, provides a convenient, comfortable, safe and healthy noon nap facility for primary and secondary school students, solves the problem of difficult noon nap of students puzzling schools and parents for a long time, is beneficial to the healthy growth of the students, is beneficial to improving the teaching quality of primary and secondary schools, has good compatibility with the existing desk and chair, high universality and convenient modification and popularization, has obvious social and economic benefits, is beneficial to hundreds of millions of students and parents of the students, and ends the history of noon nap of the groveling tables since ancient times in primary and secondary schools, the technology inevitably revolutionized the education facility industry.

Drawings

The invention is further described below with reference to the accompanying drawings.

FIG. 1 is a side view of a dual-purpose desk and chair in a sitting posture according to the first embodiment.

Fig. 2 is a side view of the dual-purpose desk and chair in a lying state according to the first embodiment.

Fig. 3 is a schematic side view of a dual-purpose desk and chair in a sitting posture according to the first embodiment.

Fig. 4 is a schematic side view of a dual-purpose desk and chair in a use state according to the first embodiment.

Fig. 5 is a side schematic view of the dual-purpose desk and chair in sitting and lying states.

FIG. 6 is a side view of the dual-purpose desk and chair in a sitting posture in accordance with the third embodiment.

Fig. 7 is a side view of the dual-purpose desk and chair in the lying use state according to the third embodiment.

FIG. 8 is a side view of the dual-purpose desk and chair in a sitting posture in accordance with the fourth embodiment.

Fig. 9 is a side view of the dual-purpose desk and chair in the lying use state according to the fourth embodiment.

Fig. 10 is a side view of the fifth embodiment of the dual-purpose desk and chair in a sitting position.

Fig. 11 is a side view of the fifth embodiment of the dual-purpose desk and chair in a lying use state.

Fig. 12 is a front view of the desk according to the sixth embodiment in a sitting posture.

Fig. 13 is a front view of the desk in a lying use state of the sixth embodiment of the dual-purpose desk and chair.

Detailed Description

Example one

The embodiment is a dual-purpose desk and chair, which is used for students to sit up and lie down in the afternoon nap during class, and as shown in fig. 1-4, the desk 10 comprises a desk cabinet 11, an upright post 12 and a desk base 13, the desk cabinet 11 and the upright post 12 are connected with each other by a hinge, the desk cabinet comprises a cabinet hopper and a desktop which are hinged with each other, the upright post 12 is fixedly connected with the desk base, the desk chair 20 comprises a chair base 21, a seat 22 and a backrest 23, the seat 22 is fixed or hinged on the chair base, the desk cabinet 11 of the desk 10 further comprises a positioning mechanism 111, and the positioning mechanism is used for keeping the desktop of the desk cabinet 11 in a horizontal position or an inclined position during use; the backrest 23 of the tablet chair 20 is connected with the chair base 21 or the seat plate 22 through a hinge, and the position of the backrest 23 rotating around the hinge is determined through a positioning device 24; when the desk 10 is used for lying, the desk cabinet 11 is rotated around the hinge to enable the desktop to be in an inclined position for supporting the waist and back of a lying person, and when the chair 20 is used for lying, the backrest 23 is rotated around the hinge to be in an outward inclined position and is connected with the desktop of the desk cabinet 11 in the inclined position to form an inclined long backrest close to a plane for supporting the waist and back of the lying person. The desk cabinet 11 mainly supports the back part, and the backrest 23 mainly supports the waist part, so that the desk and the tablet chair are combined to form a spacious and safe deck chair after being deformed.

The simplest structure of the tablet chair 20 is a simple chair 20a, the chair base 21 is an I-shaped chair base 21a, the seat 22 is a fixed seat 22a, the backrest 23 is a simple backrest 23a, the I-shaped chair base 21a is a horizontal four-bar framework, the side view of the I-shaped chair base is I-shaped, the I-shaped chair base comprises a T-shaped upper seat 21a1 and an inverted T-shaped lower seat 21a2, the T-shaped upper seat 21a1 and the inverted T-shaped lower seat 21a2 are inserted into each other, height adjusting holes are formed in the T-shaped upper seat and the inverted T-shaped; the fixed seat plate 22a is a flat plate and is fixed on the T-shaped upper seat 21a 1; the simple backrest 23a is connected with the end part of the T-shaped upper seat by a hinge 25 and is positioned at a position close to the vertical position or an outward inclined position by the positioning device 24; the positioning device 24 is a jaw clutch 24a, which comprises a fixed jaw disc 24a1 fixed at the lower end of the simple backrest 23a, a movable jaw disc 24a2 fixed on a hinge shaft 251 of the hinge 25 and a spring 24a3, wherein the hinge shaft 251 is connected with the end of a T-shaped upper seat 21a1 by a sliding key 24a2 and is movably matched with a hinge hole on the simple backrest 23a, and the spring 24a3 is used for keeping the meshing state of the fixed jaw disc and the movable jaw disc. Dog clutches may be of the dog or radial dog type.

When the desk and chair of the embodiment is used for listening to a class, the desk cabinet of the desk is positioned in a horizontal position, the simple backrest of the desk chair is positioned in a position close to the vertical position, and the desk and chair are deformed and combined into a deck chair like the existing desk and chair for sleeping in the afternoon nap. Thus, the desk and the chair are combined to form the deck chair which is spacious and safe after being deformed. The noon break lies on the seat, back and table, as comfortable as lying on a dedicated reclining chair, see fig. 3 and 4.

For more comfortable afternoon nap, especially for students with high height, the desk can be additionally provided with a pillow 14, wherein the pillow 14 comprises a bracket 141 and a pillow cushion 142, the bracket is inserted into the wall of the desk cabinet 11 in use or is arranged at the back of the desk cabinet 11 by a separation hinge, and the pillow can be detached for storage when not in use.

The dual-purpose desk and chair does not increase the floor area, is completely compatible with the existing desk and chair, can be integrally used in the existing classroom, and can also be used for replacing the existing desk and chair by a single set. When in use, the chair can be freely seated and laid without interfering with the adjacent seats. For height 1. The distance between the front and the back of the dual-purpose desk and chair for students of 5 meters can not exceed 85 centimeters, and the dual-purpose desk and chair completely meets the relevant standards, as shown in figure 4.

Example two

This example is substantially the same as the first embodiment except that the positioning device 24 of the tablet chair 20 is designed as a key-catch positioning assembly 24d, as shown in figure 5. The snap key positioning assembly 24D comprises a baffle plate 24D1, a snap key 24D2, a pressure spring 24D3 and a button 24D4, wherein the snap key and the pressure spring are movably embedded in a lateral opening at the lower end of the backrest 23, the pressure spring applies outward pressure to the snap key, the button 24D4 is movably assembled in a through hole of the baffle plate 24D1, the baffle plate is fixed on a T-shaped upper seat 21a1 of the chair base 21, a groove 24D11 is formed in one side, facing the backrest 23, of the baffle plate, and when the snap key 24D2 is embedded in the groove 24D11, the backrest 23 is positioned at a position close to the vertical position. When button 24d4 is pressed, the catch is pushed out of the channel and the back 23 can be rotated to an outwardly inclined position.

EXAMPLE III

This embodiment is also substantially the same as the second embodiment except that the positioning device 24 of the tablet chair 20 is a bolt positioning assembly 24e, as shown in figures 6 and 7. The bolt positioning component 24e comprises a backrest elbow 24e1 fixed at the lower end of the backrest 23 and a positioning bolt 24e2, the chair base 21 hinged with the backrest is provided with a bolt hole 211 matched with the positioning bolt, the seat plate 22 in this example is a simple seat plate 22d, one end of the simple seat plate is hinged with the backrest elbow 24e1, the other end of the simple seat plate is simply supported on the chair base 21, when the tablet chair 20 is used for taking a class, the bolt 24e2 is inserted into the bolt hole 211, the backrest 23 is in a nearly vertical position, when the tablet chair 20 is used for lying, the bolt 24e2 is pulled out from the bolt hole 211, the backrest 23 inclines outwards, the simple seat plate 22d hinged with the simple seat plate is driven to incline downwards, and at the moment, the back of the simple seat plate is low and the front of the simple seat plate is high, so that the lying person does not tend to slide.

The upright column 12 is a double upright column 12a, and is hinged with the table cabinet 11 by a table hinge 123, the double upright column 12a comprises a left double column 121a and a right double column 122a, which are both of telescopic sleeves or telescopic sleeve groove structures, so that the height of the table top can be adjusted when the table is used; as a reinforcing structure, the double-upright post is firmer for users with higher weight.

The positioning mechanism 111 of this example is a latch type positioning mechanism 111a more suitable for the double-column 12a, and includes a positioning pin 111a1 installed on the cabinet 11 and two positioning pin holes 111a2 correspondingly disposed on the double-column, the top of the double-column 12a has a platform 12a1 and an inclined chamfer 12a2, the cabinet 11 is provided with a cross beam 112, when the cross beam 112 is supported on the platform 12a1, the table top is in a horizontal position, as shown in fig. 6, and when the cross beam 112 is supported on the inclined chamfer 12a2, the table top is in an inclined position, as shown in fig. 7.

The pillow 142 of this embodiment is a flexible pillow 142a made of fabric such as canvas.

Example four

This embodiment is also a dual-purpose desk and chair, and the desk 10 is identical to the first embodiment, except that a structurally optimized compound chair 20b is designed for the desk chair 20, as shown in fig. 8 and 9. The chair base 21 of the compound chair 20b is a sloping top chair base 21b, the seat plate 22 is a dual-purpose seat plate 22b, the backrest 23 is a dual-purpose backrest 23b, the side view of the sloping top chair base 21b is in an I shape with a horizontal inclination, and comprises a sloping T-shaped upper seat 21b1 and an inverted T-shaped lower seat 21a2 which are inserted into each other, provided with height adjusting holes and fastened by screws 21a3, and the compound chair is provided with a height adjusting device like the embodiment.

The dual-purpose seat plate 22b is a flat plate and is hinged at the high end of the inclined T-shaped upper seat 21b1, and the hinged end is provided with a limit tail 22b 1; the dual-purpose backrest 23b is hinged at the lower end of the inclined T-shaped upper seat 21b1, when the compound chair 20b is used as a seat, the dual-purpose seat plate 22b is positioned at a position close to the vertical position and used as a backrest, the limit tail 22b1 is attached to the inclined T-shaped upper seat 21b1 to prevent the dual-purpose seat plate from tilting backwards, the dual-purpose backrest 23b covers the inclined T-shaped upper seat 21b1, and the free end of the dual-purpose backrest props against the dual-purpose seat plate 22b to prevent the dual-purpose seat plate from tilting forwards, so that the seat plate is positioned when being used as the backrest; when the compound chair 20b is used in a reclining chair, the dual-purpose seat 22b is overlaid on the inclined T-shaped upper seat 21b1 in a nearly horizontal and slightly inclined position, the dual-purpose back 23b is hinged to an outwardly inclined position, and the table cabinet 11 is adjusted to the inclined position to be butted with the outwardly inclined dual-purpose back 23b to form a nearly planar inclined long back for supporting the back of the sleeper. Since the seat plate 22b is slightly inclined, the person does not tend to slide down when lying down, and feels more relaxed.

The pillow 14 of this embodiment is connected to the table cabinet 11 by a separate hinge 143, and the pillow 142 is an elastic pillow 142b made of common pillow materials such as cotton wool and foam grass.

In order to make the lying more comfortable, the desk 10 can be additionally provided with a lying chair cushion 15 as a selected accessory, the lying chair cushion is used as a bedding for lying, the lying chair cushion 15 comprises a flexible chair cushion 151, hooks 152 fixed at the upper end and the lower end of the flexible chair cushion and hanging rings 153 fixed at the edges of the desk cabinet 11 and the chair base 21, and the flexible chair cushion is made of canvas or mesh fabric. When in use, the hook is hung on the hanging ring, and when not in use, the hook is detached for storage.

Compared with the two examples, the present example has the advantages that the direction of the tablet chair is not required to be manually turned when the tablet chair is used for switching between the chair and the deck chair, only the dual-purpose seat plate 22b and the dual-purpose backrest 23b need to be turned over, and the present example does not need to be provided with the positioning device 24, so the operation process when the working state is switched during use is further simplified.

EXAMPLE five

This embodiment is also a dual-purpose desk and chair, and the desk 10 is identical to the first embodiment, except that the desk 20 is modified into a swivel chair 20c, as shown in fig. 10 and 11. The swivel chair has the advantages that the chair base 21 is a rotary base 21c, the seat plate 22 is a hinged seat plate 22c, the backrest 23 is a swivel chair backrest 23c, the positioning device 24 is a positioning connecting rod 24c, the rotary base 21c comprises a cross-shaped or disc-shaped base 21c1 and a rotary lifting column 21c2 standing at the center thereof, the rotary lifting column 21c2 comprises a fixed cylinder and a lifting rotating cylinder movably sleeved outside the cylinder, the hinged seat plate 22c is hinged with the lifting rotating cylinder 21c2 by a horizontal shaft hinge 22c1, the swivel chair backrest 23c is hinged with the hinged seat plate 22c, the lower end of the swivel chair backrest is hinged with the positioning connecting rod 24c, the free end of the positioning connecting rod is provided with a near positioning opening 24c1 and a far positioning opening 24c2, the side surface of the lifting rotating cylinder 21c2 is provided with a fixed positioning column 21c21, when the positioning column is clamped into the far positioning opening 24c2, the swivel chair backrest 23c is positioned at a position close to the vertical position, and the hinged seat plate is positioned at the horizontal position and used for serving as a chair in class. When the positioning posts are snapped into the positioning openings, the swivel chair back 23c is positioned in an outwardly inclined position, while the hinged seat is in a slightly downwardly inclined position, constituting a reclining chair for noon break in conjunction with the table cabinet 11 adjusted to the inclined position.

EXAMPLE six

This example is also a simplest dual-purpose desk and chair, which is used in no more than half of the classrooms with noon nap in the same classroom, as shown in fig. 12 and 13. The desk can completely adopt the existing structure without any change, and the desk is only designed into a dual-purpose desk 10a which can independently realize the lying function, the dual-purpose desk 10a comprises a dual-purpose desk cabinet 11a and high and low upright posts 12a, the high and low upright posts comprise a front high upright post 12a1, a rear high upright post 12a2, a low upright post 12a3 and a dual-purpose base 13a fixedly connected with each upright post, the dual-purpose desk cabinet comprises a cabinet hopper and a desktop, the dual-purpose desk cabinet is mutually hinged with the front high upright post 12a1 and the rear high upright post 12a2, and the desktop of the desk cabinet is positioned at the horizontal position or the inclined position by a positioning mechanism 111; the positioning mechanism 111 is a supporting positioning mechanism 111a, and comprises a supporting plate 111a1 hinged with the free end of the dual-purpose desk cabinet and supporting legs 111a2 hinged with the supporting plate, the supporting plate is of a plate-shaped structure, so that the supporting plate can be designed into a curved surface according to human engineering for more comfortable lying. When the dual-purpose desk is used for class, the supporting legs are inserted into the holes of the low upright posts 12a3, and the desktop of the dual-purpose desk cabinet is positioned at a horizontal position; when the dual-purpose desk is used for lying, the free end of the dual-purpose desk cabinet is supported at the top end of the lower upright post 12a3, the desktop of the dual-purpose desk cabinet is positioned at an inclined position, the supporting plate 111a1 rotates for more than 90 degrees around the hinge and is connected with the desktop of the dual-purpose desk cabinet to form a supporting surface of the reclining chair, and the supporting legs are drooping and supported on the ground to support the weight of the lower half of the lying person.

The desk can be independently used as a deck chair without the assistance of a chair, but because the desk occupies a channel on the side surface of the desk when lying down, the desk on one side of the channel between two rows of desks can be used as the deck chair, namely, the lying students can not exceed half, and the desk is actually used for most middle and primary schools. When all the dual-purpose desks are in a lying state, the longitudinal channels are occupied, but the spaces of the chairs are connected into a transverse channel which can be used as a temporary channel in noon break.

The above embodiments are only some of the possible embodiments, and more specific structures can be evolved according to the method of the present invention and the existing mechanical knowledge, which need not be listed, but all fall within the scope of the present invention.

Claims

1. A method for realizing a afternoon nap function on a desk is provided, which designs a sitting and lying dual-purpose desk and chair, and comprises the desk and a chair, wherein the desk comprises a desk cabinet, a stand column and a desk base, and is characterized in that: the desk cabinet is connected with the upright post by a hinge, the tablet chair comprises a chair base, a seat plate and a backrest, and the backrest is connected with the chair base or the seat plate by a hinge; when the desk is used for lying, the desk cabinet rotates around the hinge, so that the desktop of the desk cabinet rotates to be in an inclined position to support the waist and the back of a lying person.

2. The utility model provides a sit dual-purpose desk chair of lying, including desk (10) and desk (20), desk (10) are including table cabinet (11), stand (12) and table base (13), hinge interconnect is used with stand (12) in table cabinet (11), the table cabinet is fought and the desktop including articulated cabinet of each other, stand (12) and table base fixed connection, desk (20) are including chair base (21), seat (22) and back (23), seat (22) are fixed or articulate on chair base, its characterized in that: the desk cabinet (11) of the desk (10) further comprises a positioning mechanism (111), and the positioning mechanism is used for keeping the desktop of the desk cabinet (11) in a horizontal position or an inclined position when in use; the backrest (23) of the tablet chair (20) is connected with the chair base (21) or the seat plate (22) through a hinge, and the position of the backrest (23) rotating around the hinge is determined through a positioning device (24); when the desk (10) is used for lying, the desk cabinet (11) rotates around the hinge, so that the desktop of the desk cabinet is rotated to be in an inclined position to support the waist and the back of a lying person, when the tablet chair (20) is used for lying, the backrest (23) rotates around the hinge to be in an outward inclined position, and is connected with the desktop of the desk cabinet (11) in the inclined position to form a nearly planar inclined long backrest for supporting the waist and the back of the lying person.

3. A chair for sitting and lying in according to claim 2, wherein: the upright post (12) comprises a left upright post (121) and a right upright post (122), which are both of telescopic sleeves or telescopic sleeve groove structures, so that the height of the table top can be adjusted when the table is used;

the positioning mechanism (111) comprises a supporting block (1111) fixed on the upright column, a supporting rod (1112) hinged on the table cabinet (11) and a handle (1113) fixed on the supporting rod, when the supporting rod (1112) is propped against the supporting block (1111), the table cabinet (11) is in a horizontal position, when the supporting rod (1112) rotates away from the supporting block (1111), the bottom of the table cabinet (11) is supported on the supporting block (1111), the table cabinet (11) is in an inclined position, and the handle (1113) is used for controlling the rotation of the supporting rod (1112);

the desk (10) also comprises a pillow (14), the pillow (14) comprises a bracket (141) and a pillow pad (142), when in use, the bracket is inserted into the wall of the desk cabinet (11) or is arranged at the back of the desk cabinet (11) by a separation hinge, and when not in use, the pillow is detached for storage.

4. A chair for sitting and lying in according to claim 2, wherein: the upright column (12) is a double upright column (12 a) and comprises a left double column (121 a) and a right double column (122 a), which are both of telescopic sleeves or telescopic sleeve groove structures, so that the height of the table top can be adjusted when the table is used;

the positioning mechanism (111) is a bolt type positioning mechanism (111 a) and comprises positioning pins (111 a 1) arranged on a table cabinet (11) or a double-upright post (12 a) and positioning pin holes (111 a 2) correspondingly arranged on the double-upright post or the table cabinet, a platform (12 a 1) and an oblique chamfer (12 a 2) are arranged at the top of the double-upright post (12 a), a cross beam (112) is arranged in the table cabinet (11), when the cross beam (112) is supported on the platform (12 a 1), the table top is in a horizontal position, and when the cross beam (112) is supported on the oblique chamfer (12 a 2), the table top is in an oblique position.

5. A chair for sitting and lying in according to claim 2, wherein: the school chair (20) is a simple chair (20 a), the chair base (21) is an I-shaped chair base (21 a), the seat plate (22) is a fixed seat plate (22 a), the backrest (23) is a simple backrest (23 a), the I-shaped chair base (21 a) is a horizontal four-bar framework, the side view of the I-shaped chair base is I-shaped, the I-shaped chair base comprises a T-shaped upper seat (21 a 1) and an inverted T-shaped lower seat (21 a 2), the T-shaped upper seat and the inverted T-shaped lower seat are inserted into each other, height adjusting holes are formed in the I-shaped chair base, and the T-shaped upper seat and the inverted T-; the fixed seat plate (22 a) is a flat plate and is fixed on the T-shaped upper seat (21 a 1); the simple backrest (23 a) is connected with the end part of the T-shaped upper seat through a hinge (25) and is positioned at a position close to the vertical position or an outward inclined position through the positioning device (24); the positioning device (24) is a jaw clutch (24 a) and comprises a fixed jaw disc (24 a 1) fixed at the lower end of a simple backrest (23 a), a movable jaw disc (24 a 2) fixed on a hinge shaft (251) of a hinge (25) and a spring (24 a 3), the hinge shaft (251) is connected with the end part of a T-shaped upper seat (21 a 1) through a sliding key (24 a 2) and movably matched with a hinge hole in the simple backrest (23 a), and the spring (24 a 3) is used for keeping the meshing state of the fixed jaw disc and the movable jaw disc.

6. A chair for sitting and lying in according to claim 2, wherein: the tablet chair (20) is a compound chair (20 b), the chair base (21) is an inclined top chair base (21 b), the seat plate (22) is a dual-purpose seat plate (22 b), the backrest (23) is a dual-purpose backrest (23 b), the side view of the inclined top chair base (21 b) is in an I shape which is transversely inclined upwards, the side view of the inclined top chair base comprises an inclined T-shaped upper seat (21 b 1) and an inverted T-shaped lower seat (21 a 2), the inclined T-shaped upper seat and the inverted T-shaped lower seat are mutually inserted, height adjusting holes are formed in the inclined top chair base and the inclined top chair base, and the inclined top chair base and the; the dual-purpose seat plate (22 b) is a flat plate and is hinged at the high end of the inclined T-shaped upper seat (21 b 1), and the hinged end is provided with a limit tail (22 b 1); the dual-purpose backrest (23 b) is hinged at the lower end of the inclined T-shaped upper seat (21 b 1), when the compound chair (20 b) is used as a chair, the dual-purpose seat plate (22 b) is positioned at a position close to the vertical position and used as the backrest, the limiting tail (22 b 1) is attached to the inclined T-shaped upper seat (21 b 1) to prevent the dual-purpose seat plate from tilting backwards, the dual-purpose backrest (23 b) covers the inclined T-shaped upper seat (21 b 1), and the free end of the dual-purpose seat plate (22 b) is propped against the dual-purpose seat plate to prevent the dual-purpose seat plate from tilting forwards; when the compound chair (20 b) is used for a reclining chair, the dual-purpose seat (22 b) is covered on the inclined T-shaped upper seat (21 b 1) and is in a nearly horizontal position, the dual-purpose backrest (23 b) rotates to an outward inclined position around the hinge, and the desk cabinet (11) is adjusted to be in the inclined position and is butted with the outward inclined dual-purpose backrest (23 b) to form a nearly plane inclined long backrest for supporting the waist and the back of a sleeper.

7. A chair for sitting and lying in according to claim 2, wherein: the tablet chair (20) is a swivel chair (20 c), the chair base (21) is a rotary base (21 c), the seat plate (22) is a hinged seat plate (22 c), the backrest (23) is a swivel chair backrest (23 c), the positioning device (24) is a positioning connecting rod (24 c), the rotary base (21 c) comprises a cross-shaped or disc-shaped base (21 c 1) and a rotary lifting column (21 c 2) standing at the center of the base, the hinged seat plate (22 c) is hinged with the rotary lifting column (21 c 2) through a horizontal shaft hinge, the swivel chair backrest (23 c) is hinged with the hinged seat plate (22 c), the lower end of the swivel chair backrest is hinged with the positioning connecting rod (24 c), the free end of the positioning connecting rod is provided with a near positioning port (24 c 1) and a far positioning port (24 c 2), the side surface of the rotary lifting column (21 c 2) is provided with a fixed positioning column (21 c 21), and the positioning column is clamped into the near positioning port, the swivel chair back (23 c) is positioned in an outward inclined position, and when the swivel chair back (23 c) is clamped into the far positioning opening (242), the swivel chair back (23 c) is positioned in a nearly vertical position.

8. A chair for sitting and lying in according to claim 2, wherein: a positioner (24) for confirming back (23) around hinge pivoted position is bayonet socket locating component (24 d), bayonet socket locating component (24 d) are including ejector pin (24 d 1), card key (24 d 2) and pressure spring (24 d 3) of cartridge in back (23) and fix card key frid (24 d 4) on chair base (21), be equipped with two high-low card key notches on the card key frid, be located back (23) in the lean-out position when card key (24 d 2) card goes into the eminence notch, be located back (23) in near vertical position when card goes into the low notch.

9. A chair for sitting and lying in according to claim 2, wherein: the positioning device (24) for determining the position of the backrest (23) rotating around the hinge is a bolt positioning assembly (24 e), the bolt positioning assembly (24 e) comprises a backrest elbow (24 e 1) and a positioning bolt (24 e 2) which are fixed at the lower end of the backrest (23), a bolt hole (211) matched with the positioning bolt is formed in the chair base (21) hinged to the backrest, the seat plate (22) is a simple support seat plate (22 d), one end of the simple support seat plate is hinged to the backrest elbow (24 e 1), the other end of the simple support seat plate is hinged to the chair base (21), when the bolt (24 e 2) is inserted into the bolt hole (211), the backrest (23) is in a nearly vertical position, and when the bolt is pulled out of the bolt hole (211), the backrest (23) inclines outwards, so that the simple support seat plate (22 d) hinged to the backrest is driven to incline downwards.

10. The utility model provides a sit dual-purpose desk chair of lying, includes desk and desk chair, and the desk includes cabinet, stand and table base, its characterized in that: the desk is a dual-purpose desk (10 a), the desk cabinet is a dual-purpose desk cabinet (11 a), the upright posts are high and low upright posts (12 a) and comprise a front high upright post (12 a 1), a rear high upright post (12 a 2) and a low upright post (12 a 3), the desk base is a dual-purpose base (13 a) fixedly connected with each upright post, the dual-purpose desk cabinet comprises a cabinet hopper and a desktop, the dual-purpose desk cabinet is hinged with the front high upright post (12 a 1) and the rear high upright post (12 a 2), and the desktop of the desk cabinet is positioned at a horizontal position or an inclined position by a positioning mechanism (111); the positioning mechanism (111) is a supporting and positioning mechanism (111 a) and comprises a supporting plate (111 a 1) hinged with the free end of the dual-purpose desk and supporting legs (111 a 2) hinged with the supporting plate, when the dual-purpose desk is used for class, the supporting legs are inserted into the holes of the low upright posts (12 a 3), and the desktop of the dual-purpose desk is positioned at a horizontal position; when the dual-purpose desk is used for lying, the free end of the dual-purpose desk cabinet is supported at the top end of the lower upright post (12 a 3), the desktop of the dual-purpose desk cabinet is positioned at an inclined position, the supporting plate (111 a 1) rotates for more than 90 degrees around the hinge and is connected with the desktop of the dual-purpose desk cabinet to form a supporting surface of the reclining chair, and the supporting legs are supported on the ground in a drooping way to support the weight of the lower half of the body of a lying person.