CN217337806U - Multifunctional deformable combined desk and chair for noon break bed - Google Patents

Abstract

The utility model discloses a multifunctional combined desk and chair of a deformable lunch break bed, which comprises an underframe, a desk and a chair; the desk comprises a desk plate, a drawer cabinet body and a lifting frame; the chair frame is arranged on the bottom frame in a way of lifting up and down, and can slide back and forth relative to the bottom frame; the chair seat is arranged on the chair frame, and the backrest part can be hinged with the chair seat in a front-back adjustable way; the lifting frame is fixedly arranged on the bottom frame, and the lifting movable end of the lifting frame is connected with the bottom of the drawer cabinet body; the table plate is horizontally arranged on the top end surface of the drawer cabinet body, and the table plate can be turned up and down around the front end of the drawer cabinet body. The desk is lowered to support the legs of the student, so that the head of the student is prevented from being pressed when the head of the student is positioned between the desk drawer and the foot placing plate, and the phenomenon that the head of the student collides with the drawer cabinet body when the student gets up is avoided. In addition, because the chair frame can rise the seat support and lean against the portion, make and lean against the space grow between portion and the rear side table, increase the space of placing of student's shank, improve student's use and experience.

Description

Multifunctional deformable combined desk and chair for noon break bed

Technical Field

The utility model relates to a technical field of desk chair especially relates to a multi-functional deformation noon break bed combination desk chair.

Background

In order to improve the comfort of students in the noon break in a classroom, deformable desks and chairs as shown in figure 1 are available on the market. After the desk and chair are deformed, the drawer 910 of the desk is raised integrally to make the position for the front desk to be put down, the foot placing plate 920 is provided at the bottom of the desk, and the chair back 810 of the desk is turned backwards and is positioned between the drawer 910 of the rear desk and the foot placing plate 920. The deformable desk and chair can meet the requirement that students can lie in the desk and chair for noon break, but has the following problems: when the student uses, student's head is located drawer 910 and puts between the foot board 920, and the oppression for the student feels strong, still can appear the head and collide drawer 910 when getting up, and use experience is poor. In addition, the space between the front backrest 810 and the rear footrest 920 is small, which increases the discomfort of the student.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multi-functional deformation noon break bed combination desk chair to solve above-mentioned problem.

In order to solve the technical problem, the utility model discloses a: a multifunctional deformable lunch break bed combined desk and chair comprises an underframe, a desk and a chair; the desk comprises a desk plate, a drawer cabinet body and a lifting frame; the chair frame is arranged on the underframe in a way of lifting up and down, and can slide back and forth relative to the underframe; the chair seat is arranged on the chair frame, and the backrest part is hinged with the chair seat in a way of being adjustable back and forth; the lifting frame is fixedly arranged on the bottom frame, and the lifting movable end of the lifting frame is connected with the bottom of the drawer cabinet body; the table plate is horizontally arranged on the top end face of the drawer cabinet body, and the table plate can be turned up and down around the front end of the drawer cabinet body.

As an alternative embodiment, the drawer cabinet is provided with an upper cross bar, the upper cross bar is positioned at the front part of the bottom surface of the table plate, and the table plate is turned around the upper cross bar; the bottom of the table plate is provided with ratchets, the upper cross rod is provided with a locking plate, ratchet tooth grooves are formed in the edge of the locking plate, and the table plate can only turn upwards when the ratchets are inserted into the ratchet tooth grooves; in a folded state, the ratchets are separated from the ratchet tooth grooves, and the table plate can be turned downwards to be horizontally arranged; when the folding table is required to be folded, the table plate is firstly turned upwards to separate the ratchet teeth from the ratchet tooth grooves, and then the table plate is turned downwards to be folded.

As an alternative embodiment, the chair frame comprises a sliding frame, a lifting cylinder and a chair seat bracket, wherein the lifting cylinder is provided with a lifting valve switch; the sliding frame is connected with the bottom frame in a sliding manner; the lifting cylinder is vertically arranged on the sliding frame, and the seat support bracket is arranged at the top end of a piston rod of the lifting cylinder; the lift valve switch set up in the seat support bracket, the seat support bracket with seat support fixed connection.

As an optional implementation manner, a locking mechanism is arranged between the sliding frame and the bottom frame, and the locking mechanism comprises a pedal, a rotating shaft, a torsion spring, a limiting block, a linkage rod and a limiting rack; the pedal is provided with a sleeve; the bottom surface of the limiting block is in a sawtooth shape; the rotating shaft is arranged on the sliding frame; the sleeve is rotatably sleeved on the rotating shaft; the torsion spring is sleeved on the rotating shaft; the torsion spring is positioned between the sleeve and the rotating shaft; one end of the torsion spring is fixedly connected with the sleeve, and the other end of the torsion spring is fixedly connected with the rotating shaft; the limiting rack is arranged on the underframe along the front-back direction; the limiting block can be movably arranged above the limiting rack up and down; one end of the linkage rod is fixedly connected with the bottom of the sleeve, and the other end of the linkage rod is hinged with the top of the limiting block.

As an optional implementation manner, a pulley is arranged at the bottom of the sliding frame, the bottom frame is provided with a sliding groove, and the pulley is in sliding fit with the sliding groove.

As an optional implementation mode, the tablet chair further comprises an armrest, a liftable limiting column is arranged on the side wall of the sliding frame, a connecting rod is arranged at the top of the limiting column, one end of the armrest is hinged to the side wall of the backrest part, one end of the armrest is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the top of the limiting column.

As an optional implementation mode, the lifting frame comprises a tray, a control assembly, an upper connecting rod, a lower connecting rod, a gas spring, a fixing rod and a stand column; the top end surface of the tray is fixedly connected with the bottom end surface of the drawer cabinet; the bottom of the upright post is fixedly connected with the bottom frame, and the fixed rod is installed on the top end face of the upright post; the top end of the upper connecting rod is hinged with the tray, and the bottom end of the upper connecting rod is hinged with the fixed rod; the top end of the lower connecting rod is hinged with the tray, and the bottom end of the lower connecting rod is hinged with the fixed rod; the control assembly comprises a control handle, a control line and a pneumatic head switch which are sequentially connected, the control handle is installed at the bottom of the drawer cabinet, the pneumatic head switch is hinged with the lower connecting rod, and the control handle is in transmission connection with the pneumatic head switch through the control line; the top end of the gas spring is connected with the pneumatic head switch, and the bottom end of the gas spring is hinged with the fixed rod; the upper connecting rod and the lower connecting rod are parallel to each other, the gas spring is arranged below the lower connecting rod, the upper connecting rod is arranged above the lower connecting rod, and the plane where the table tray is located is parallel to the plane where the top end face of the upright post is located.

Compared with the prior art, the embodiment of the utility model provides a following beneficial effect has:

in the embodiment of the utility model, when the desk and chair needs to be transformed into a bed, the desk and chair moves backwards relative to the chassis, the chair seat is lifted, and the backrest part is put down backwards; the desk utilizes the lifting frame to lower the drawer cabinet body and the desk plate, and the desk plate is turned upwards to enable the desk plate to be arranged in an inclined mode. When the chair is used, the head and the back of a student lean against the backrest part, the hip part is located on the chair seat, and the shank part is located on the table plate, so that the student can have a rest while lying. In this embodiment, through the shank that falls the desk in order to support the student, avoid the student's head to be located the desk drawer and put between the foot board and have a sense of pressure, and the phenomenon that the head collided the drawer cabinet body when avoiding the student to get up, improve student's use greatly and experience. In addition, because the chair frame can rise the seat support and lean against the portion, make and lean against the space grow between portion and the rear side table, increase the place space of student's shank, further improve student's use and experience. It is worth explaining, in this embodiment, the tablet chair can slide around on the chassis, makes the distance between tablet chair and the desk adjustable, realizes that the length after the desk chair warp can adjust according to user's height, improves the utility model discloses a degree does benefit to the student of the different heights of adaptation, improves the comfort level of student noon break.

Drawings

FIG. 1 is a schematic diagram of a prior art desk and chair;

fig. 2 is a schematic structural diagram of the modified embodiment of the present invention;

fig. 3 is a schematic structural diagram of one embodiment of the present invention before deformation;

FIG. 4 is a schematic structural diagram of a tablet chair according to an embodiment of the present invention;

fig. 5 is a schematic view of a locking state of the locking mechanism according to one embodiment of the present invention;

fig. 6 is a schematic view of an unlocked state of the locking mechanism according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of the lifting frame of one embodiment of the invention;

FIG. 8 is a schematic view illustrating the connection between the table and the drawer cabinet according to one embodiment of the present invention;

in the drawings: 100-underframe, 110-chute, 200-desk, 210-desk plate, 211-ratchet, 220-drawer cabinet, 221-upper cross bar, 222-lock plate, 223-ratchet tooth groove, 230-lifting frame, 231-tray, 232-control component, 2321-control handle, 2322-control line, 2323-pneumatic head switch, 233-upper connecting rod, 234-lower connecting rod, 235-gas spring, 236-fixed rod, 237-upright column, 300-class chair, 310-chair frame, 311-sliding frame, 3111-pulley, 3112-limit column, 3113-connecting rod, 312-lifting cylinder, 3121-lifting valve switch, 313-chair seat bracket, 320-chair seat, 330-backrest part, 340-armrest, 400-locking mechanism, 410-pedal, 411-sleeve, 420-rotating shaft, 430-torsion spring, 440-limiting block, 450-linkage rod, 460-limiting rack, 810-chair back, 910-drawer and 920-foot placing plate.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature for distinguishing between descriptive features, non-sequential, and non-trivial.

The multifunctional combined desk and chair with a deformable lunch break bed according to the embodiment of the present invention will be described with reference to fig. 1 to 8, which comprises an underframe 100, a desk 200 and a chair 300; the tablet chair 300 comprises a chair frame 310, a chair seat 320 and a backrest 330, and the desk 200 comprises a desk plate 210, a drawer cabinet 220 and a lifting frame 230;

the chair frame 310 is arranged on the underframe 100 in a way of ascending and descending, and the chair frame 310 can slide back and forth relative to the underframe 100; the seat 320 is mounted on the chair frame 310, and the backrest 330 is hinged to the seat 320 in a front-back adjustable manner;

the lifting frame 230 is fixedly arranged on the underframe 100, and the lifting movable end of the lifting frame 230 is connected with the bottom of the drawer cabinet 220; the table plate 210 is horizontally arranged on the top end surface of the drawer cabinet 220, and the table plate 210 can be turned up and down around the front end of the drawer cabinet 220.

In the embodiment of the present invention, when the desk and chair needs to be transformed into a bed, the chair 300 moves backward relative to the bottom frame 100, and raises the seat 320, and puts down the backrest 330 backward; the desk 200 lowers the drawer cabinet 220 and the desk 210 by the lifting frame 230, and turns the desk 210 upwards, so that the desk 210 is inclined. When the chair is used, the head and the back of a student lean against the back rest part 330, the hip part is located on the chair seat 320, and the shank part is located on the desk plate 210, so that the student can have a rest while lying. In this embodiment, the legs of the student are supported by lowering the desk 200, so that the head of the student is prevented from being forced when the head of the student is located between the drawer of the desk 200 and the foot placing plate, the head of the student collides with the drawer cabinet 220 when the student gets up, and the use experience of the student is greatly improved. In addition, because the chair frame can raise the chair seat 320 and the backrest part 330, the space between the backrest part 330 and the rear desk plate 210 is enlarged, the placing space for the legs of the student is enlarged, and the use experience of the student is further improved. It is worth explaining, in this embodiment, the tablet chair 300 can slide around on the chassis 100, makes the distance between the tablet chair 300 and the desk 200 adjustable, realizes that the length after the deformation of the desk and chair can be adjusted according to the height of the user, improves the utility model discloses a degree of practicality does benefit to the student of the different heights of adaptation, improves the comfort level of student in noon break.

Preferably, the drawer cabinet 220 is provided with an upper cross bar 221, the upper cross bar 221 is located at the front of the bottom surface of the table plate 210, and the table plate 210 is turned around the upper cross bar 221; the bottom of the table plate 210 is provided with ratchet teeth 211, the upper cross bar 221 is provided with a locking plate 222, the edge of the locking plate 222 is provided with a ratchet tooth groove 223, and the table plate 210 can only turn upwards when the ratchet teeth 211 are inserted into the ratchet tooth groove 223; in the folded state, the ratchet teeth 211 are separated from the ratchet tooth grooves 223, and the table plate 210 can be turned down to be horizontally arranged; in a use state, the table 210 is turned upwards, and when the ratchet 211 is inserted into the ratchet tooth groove 223, the table 210 is locked to prevent the table 210 from being turned downwards, and when the table 210 needs to be folded, the table 210 is turned upwards to separate the ratchet 211 from the ratchet tooth groove 223, and then the table 210 is turned downwards to be folded. As shown in fig. 8, the upper cross bar 221 is rotatably connected with the table board 210, so that the table board 210 can rotate around the upper cross bar 221 to realize horizontal arrangement and inclined arrangement, the bottom of the table board 210 is provided with the ratchet 211, the upper cross bar 221 is provided with the ratchet tooth groove 223, the ratchet 211 and the ratchet tooth groove 223 form a ratchet mechanism to limit the table board 210, the table board 210 cannot be turned down when the table board 210 is inclined, gravity can be well borne, and the structure is firm. When the folding table is needed, the table plate 210 is turned upwards, the ratchet teeth 211 and the ratchet tooth grooves 223 can be separated to realize unlocking, and the table plate 210 can be turned downwards to fold after unlocking, so that the turning plate is horizontally arranged, and the operation is very convenient.

As shown in fig. 3, the chair frame 310 includes a sliding frame 311, a lifting cylinder 312 and a chair seat bracket 313, wherein the lifting cylinder 312 has a lifting valve switch 3121; the sliding frame 311 is connected with the bottom frame 100 in a sliding manner; the lifting cylinder 312 is vertically arranged on the sliding frame 311, and the seat bracket 313 is arranged at the top end of a piston rod of the lifting cylinder 312; the lifting valve switch 3121 is disposed on the seat bracket 313, and the seat bracket 313 is fixedly connected to the seat 320. Therefore, when the lifting chair is used, the lifting cylinder 312 can be used for lifting the chair frame 310 by opening the lifting valve switch 3121, and compared with some existing lifting structures which are lifted by hand, the use convenience is greatly improved.

Preferably, a locking mechanism 400 is arranged between the sliding frame 311 and the bottom frame 100, and the locking mechanism 400 comprises a pedal plate 410, a rotating shaft 420, a torsion spring 430, a limit block 440, a linkage rod 450 and a limit rack 460; the pedal plate 410 is provided with a sleeve 411; the bottom surface of the limiting block 440 is serrated; the rotating shaft 420 is arranged on the sliding frame 311; the sleeve 411 is rotatably sleeved on the rotating shaft 420; the torsion spring 430 is sleeved on the rotating shaft 420; the torsion spring 430 is located between the sleeve 411 and the rotating shaft 420; one end of the torsion spring 430 is fixedly connected with the sleeve 411, and the other end of the torsion spring 430 is fixedly connected with the rotating shaft 420; the limit rack 460 is arranged on the bottom frame 100 along the front-back direction; the limiting block can be movably arranged above the limiting rack 460 up and down; one end of the linkage rod 450 is fixedly connected with the bottom of the sleeve 411, and the other end of the linkage rod 450 is hinged with the top of the limiting block 440. Specifically, as shown in fig. 5 and 6, when the pedal 410 is forced to rotate around the rotating shaft 420, the sleeve 411 drives the linkage rod 450 to rotate upward, so as to drive the limiting block 440 to lift upward, so that the bottom surface of the limiting block 440 is separated from the limiting rack 460, thereby unlocking the sliding frame 311 from the bottom frame 100, and further enabling the sliding frame 311 to slide back and forth. When the pressure of the foot pedal 410 is removed, the torsion spring 430 provides a restoring force to restore the foot pedal 410, so that the stopper 440 is again locked with the stopper rack 460, thereby locking the sliding frame 311 to prevent the sliding frame 311 from sliding back and forth on the bottom chassis 100.

Preferably, a pulley 3111 is disposed at the bottom of the sliding rack 311, the bottom frame 100 is provided with a sliding slot 110, and the pulley 3111 is in sliding fit with the sliding slot 110. Specifically, in this embodiment, the sliding frame 311 is in sliding fit with the bottom chassis 100 through the pulley 3111, and rolling friction is adopted instead of sliding friction, so that the sliding resistance of the sliding frame 311 is reduced, the sliding smoothness of the sliding frame 311 is improved, and the use experience of the user is improved.

Preferably, tablet chair 300 still includes handrail 340, the lateral wall of carriage 311 is equipped with the spacing post 3112 of liftable, the top of spacing post 3112 is equipped with connecting rod 3113, the one end of handrail 340 with it is articulated to lean against the lateral wall of portion 330, handrail 340 with the one end of connecting rod 3113 is articulated, the other end of connecting rod 3113 with the top of spacing post 3112 is articulated. Specifically, in this embodiment, the sliding frame 311 is in an H shape, sliding grooves 110 are disposed at top portions of two sides of the sliding frame 311, and the limiting post 3112 is movably inserted into the sliding groove 110. The limiting posts 3112 are fixedly connected to the side walls of the seat 320, so that when the lifting cylinder 312 drives the seat 320 to rise, the limiting posts 3112 rise synchronously to drive the armrests 340 to rise. It is worth explaining that, the limit columns 3112 and the handrails 340 form a fence structure, so that students can be prevented from moving on two sides, and the students can be effectively prevented from rolling over and falling off.

Preferably, the lifting frame 230 comprises a tray 231, a control assembly 232, an upper connecting rod 233, a lower connecting rod 234, a gas spring 235, a fixing rod 236 and a vertical column 237; the top end surface of the tray 231 is fixedly connected with the bottom end surface of the drawer cabinet; the bottom of the upright column 237 is fixedly connected with the base frame 100, and the fixing rod 236 is installed on the top end surface of the upright column 237; the top end of the upper connecting rod 233 is hinged with the tray 231, and the bottom end of the upper connecting rod 233 is hinged with the fixing rod 236; the top end of the lower link 234 is hinged with the tray 231, and the bottom end of the lower link 234 is hinged with the fixing rod 236; the control assembly 232 comprises a control handle 2321, a control line 2322 and a pneumatic head switch 2323 which are connected in sequence, the control handle 2321 is installed at the bottom of the drawer cabinet, the pneumatic head switch 2323 is hinged to the lower connecting rod 234, and the control handle 2321 is in transmission connection with the pneumatic head switch 2323 through the control line 2322; the top end of the gas spring 235 is connected with a pneumatic head switch 2323, and the bottom end of the gas spring 235 is hinged with the fixing rod 236; the upper connecting rod 233 and the lower connecting rod 234 are parallel to each other, the gas spring 235 is arranged below the lower connecting rod 234, the upper connecting rod 233 is arranged above the lower connecting rod 234, and the plane where the table tray is located is parallel to the plane where the top end face of the upright column 237 is located. Specifically, as shown in the embodiment of fig. 7, the height of the drawer cabinet is adjusted by a four-bar linkage structure formed by the tray of the table, the upper bar 233, the lower bar 234 and the fixing bar 236, specifically, when the height of the drawer cabinet needs to be adjusted, the control handle 2321 is pulled, the control handle 2321 controls the gas spring 235 to be in an adjustable state through the control line 2322 and the pneumatic head switch 2323, at this time, the table 210 can be moved up and down to a proper height, the control handle 2321 is released, the gas spring 235 is restored to a locked state, and at this time, the drawer cabinet is fixed at the adjusted height, so as to complete the adjustment of the height of the drawer cabinet. Compared with the prior lifting structures with hand-cranking lifting, the lifting structure greatly improves the use convenience.

Other configurations and operations of the multifunctional modified noon break bed combined desk and chair according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (7)

1. The utility model provides a multi-functional lunch break bed combination desk chair that warp which characterized in that: comprises a bottom frame, a desk and a tablet chair; the desk comprises a desk plate, a drawer cabinet body and a lifting frame;

the chair frame is arranged on the underframe in a way of lifting up and down, and can slide back and forth relative to the underframe; the chair seat is arranged on the chair frame, and the backrest part is hinged with the chair seat in a way of being adjustable back and forth;

the lifting frame is fixedly arranged on the bottom frame, and the lifting movable end of the lifting frame is connected with the bottom of the drawer cabinet body; the table plate is horizontally arranged on the top end face of the drawer cabinet body, and the table plate can be turned up and down around the front end of the drawer cabinet body.

2. The multifunctional combined desk and chair for the lunch break bed as claimed in claim 1, wherein: the drawer cabinet body is provided with an upper cross rod, the upper cross rod is positioned at the front part of the bottom surface of the table plate, and the table plate is overturned around the upper cross rod; the bottom of the table plate is provided with ratchets, the upper cross rod is provided with a locking plate, ratchet tooth grooves are formed in the edge of the locking plate, and the table plate can only turn upwards when the ratchets are inserted into the ratchet tooth grooves;

in a folded state, the ratchets are separated from the ratchet tooth grooves, and the table plate can be turned downwards to be horizontally arranged;

when the folding table is required to be folded, the table plate is firstly turned upwards to separate the ratchet teeth from the ratchet tooth grooves, and then the table plate is turned downwards to be folded.

3. The multifunctional combined desk and chair for the lunch break bed as claimed in claim 1, wherein: the chair frame comprises a sliding frame, a lifting cylinder and a chair seat bracket, wherein the lifting cylinder is provided with a lifting valve switch;

the sliding frame is connected with the bottom frame in a sliding manner; the lifting cylinder is vertically arranged on the sliding frame, and the seat support bracket is arranged at the top end of a piston rod of the lifting cylinder; the lift valve switch set up in the seat support bracket, the seat support bracket with seat support fixed connection.

4. The multifunctional combined desk and chair for the lunch break bed as claimed in claim 3, wherein: a locking mechanism is arranged between the sliding frame and the underframe, and comprises a pedal plate, a rotating shaft, a torsional spring, a limiting block, a linkage rod and a limiting rack; the pedal plate is provided with a sleeve; the bottom surface of the limiting block is in a sawtooth shape;

the rotating shaft is arranged on the sliding frame;

the sleeve is rotatably sleeved on the rotating shaft;

the torsion spring is sleeved on the rotating shaft; the torsion spring is positioned between the sleeve and the rotating shaft; one end of the torsion spring is fixedly connected with the sleeve, and the other end of the torsion spring is fixedly connected with the rotating shaft;

the limiting rack is arranged on the underframe along the front-back direction;

the limiting block can be movably arranged above the limiting rack up and down;

one end of the linkage rod is fixedly connected with the bottom of the sleeve, and the other end of the linkage rod is hinged with the top of the limiting block.

5. The multifunctional combined desk and chair for the lunch break bed as claimed in claim 3, wherein: the bottom of carriage is equipped with the pulley, the chassis is equipped with the spout, the pulley with spout sliding fit.

6. The multifunctional combined desk and chair for the lunch break bed as claimed in claim 3, wherein: the tablet chair further comprises an armrest, the side wall of the sliding frame is provided with a liftable limiting column, the top of the limiting column is provided with a connecting rod, one end of the armrest is hinged to the side wall of the backrest part, one end of the armrest is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the top of the limiting column.

7. The multifunctional combined desk and chair for the lunch break bed as claimed in claim 1, wherein: the lifting frame comprises a tray, a control assembly, an upper connecting rod, a lower connecting rod, an air spring, a fixed rod and an upright post;

the top end surface of the tray is fixedly connected with the bottom end surface of the drawer cabinet;

the bottom of the upright post is fixedly connected with the bottom frame, and the fixed rod is installed on the top end face of the upright post;

the top end of the upper connecting rod is hinged with the tray, and the bottom end of the upper connecting rod is hinged with the fixed rod;

the top end of the lower connecting rod is hinged with the tray, and the bottom end of the lower connecting rod is hinged with the fixed rod;

the control assembly comprises a control handle, a control line and a pneumatic head switch which are sequentially connected, the control handle is installed at the bottom of the drawer cabinet, the pneumatic head switch is hinged with the lower connecting rod, and the control handle is in transmission connection with the pneumatic head switch through the control line;

the top end of the gas spring is connected with the pneumatic head switch, and the bottom end of the gas spring is hinged with the fixed rod;

the upper connecting rod and the lower connecting rod are parallel to each other, the gas spring is arranged below the lower connecting rod, the upper connecting rod is arranged above the lower connecting rod, and the plane where the table tray is located is parallel to the plane where the top end face of the upright post is located.

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